From patchwork Fri Aug 17 15:05:00 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958933 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRX03vfTz9s4Z for ; Sat, 18 Aug 2018 01:12:32 +1000 (AEST) Received: from localhost ([::1]:34643 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgQQ-0000AX-34 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:12:30 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46200) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00034C-8B for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKB-0001fY-Df for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46098 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKB-0001ef-4z for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:03 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C6D52406E81C; Fri, 17 Aug 2018 15:06:02 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 140952026D6C; Fri, 17 Aug 2018 15:06:01 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id E09281132F5C; Fri, 17 Aug 2018 17:05:59 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:00 +0200 Message-Id: <20180817150559.16243-2-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:02 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:02 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 01/60] check-qjson: Cover multiple JSON objects in same string X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" qobject_from_json() & friends misbehave when the JSON text has more than one JSON value. Add test coverage to demonstrate the bugs. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index eaf5d20663..cc952c56ea 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1418,6 +1418,25 @@ static void limits_nesting(void) g_assert(obj == NULL); } +static void multiple_values(void) +{ + Error *err = NULL; + QObject *obj; + + /* BUG this leaks the syntax tree for "false" */ + obj = qobject_from_json("false true", &err); + g_assert(qbool_get_bool(qobject_to(QBool, obj))); + g_assert(!err); + qobject_unref(obj); + + /* BUG simultaneously succeeds and fails */ + /* BUG calls json_parser_parse() with errp pointing to non-null */ + obj = qobject_from_json("} true", &err); + g_assert(qbool_get_bool(qobject_to(QBool, obj))); + error_free_or_abort(&err); + qobject_unref(obj); +} + int main(int argc, char **argv) { g_test_init(&argc, &argv, NULL); @@ -1455,6 +1474,7 @@ int main(int argc, char **argv) g_test_add_func("/errors/invalid_dict_comma", invalid_dict_comma); g_test_add_func("/errors/unterminated/literal", unterminated_literal); g_test_add_func("/errors/limits/nesting", limits_nesting); + g_test_add_func("/errors/multiple_values", multiple_values); return g_test_run(); } From patchwork Fri Aug 17 15:05:01 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958941 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRkq52l6z9sBx for ; Sat, 18 Aug 2018 01:21:55 +1000 (AEST) Received: from localhost ([::1]:34717 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgZV-0004p5-AX for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:21:53 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46196) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00034A-7Z for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKB-0001g0-Oj for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56194 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKB-0001fM-EI for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:03 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1CE4F72645; Fri, 17 Aug 2018 15:06:03 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 181112156712; Fri, 17 Aug 2018 15:06:01 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id E3D051132CB6; Fri, 17 Aug 2018 17:05:59 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:01 +0200 Message-Id: <20180817150559.16243-3-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:03 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:03 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 02/60] check-qjson: Cover blank and lexically erroneous input X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" qobject_from_json() can return null without setting an error on lexical errors. I call that a bug. Add test coverage to demonstrate it. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 40 +++++++++++++++++++++++++++++++++++++--- 1 file changed, 37 insertions(+), 3 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index cc952c56ea..4daadc272b 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1307,8 +1307,40 @@ static void simple_varargs(void) static void empty_input(void) { - const char *empty = ""; - QObject *obj = qobject_from_json(empty, &error_abort); + QObject *obj = qobject_from_json("", &error_abort); + g_assert(obj == NULL); +} + +static void blank_input(void) +{ + QObject *obj = qobject_from_json("\n ", &error_abort); + g_assert(obj == NULL); +} + +static void junk_input(void) +{ + /* Note: junk within strings is covered elsewhere */ + Error *err = NULL; + QObject *obj; + + obj = qobject_from_json("@", &err); + g_assert(!err); /* BUG */ + g_assert(obj == NULL); + + obj = qobject_from_json("[0\xFF]", &err); + error_free_or_abort(&err); + g_assert(obj == NULL); + + obj = qobject_from_json("00", &err); + g_assert(!err); /* BUG */ + g_assert(obj == NULL); + + obj = qobject_from_json("[1e", &err); + g_assert(!err); /* BUG */ + g_assert(obj == NULL); + + obj = qobject_from_json("truer", &err); + error_free_or_abort(&err); g_assert(obj == NULL); } @@ -1462,7 +1494,9 @@ int main(int argc, char **argv) g_test_add_func("/varargs/simple_varargs", simple_varargs); - g_test_add_func("/errors/empty_input", empty_input); + g_test_add_func("/errors/empty", empty_input); + g_test_add_func("/errors/blank", blank_input); + g_test_add_func("/errors/junk", junk_input); g_test_add_func("/errors/unterminated/string", unterminated_string); g_test_add_func("/errors/unterminated/escape", unterminated_escape); g_test_add_func("/errors/unterminated/sq_string", unterminated_sq_string); From patchwork Fri Aug 17 15:05:02 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958930 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRSm2yXJz9sBx for ; Sat, 18 Aug 2018 01:09:44 +1000 (AEST) Received: from localhost ([::1]:34621 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgNi-0005J9-0H for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:09:42 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46186) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-000340-55 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKB-0001fs-Kx for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46102 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKB-0001f0-Ci for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:03 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 11CF6406E81F; Fri, 17 Aug 2018 15:06:03 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 1C50910DCF6D; Fri, 17 Aug 2018 15:06:01 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id E77EC1132BD1; Fri, 17 Aug 2018 17:05:59 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:02 +0200 Message-Id: <20180817150559.16243-4-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:03 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:03 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 03/60] check-qjson: Cover whitespace more thoroughly X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 4daadc272b..188f683317 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1236,7 +1236,7 @@ static void simple_whitespace(void) })), }, { - .encoded = " [ 43 , { 'h' : 'b' }, [ ], 42 ]", + .encoded = "\t[ 43 , { 'h' : 'b' },\r\n\t[ ], 42 ]\n", .decoded = QLIT_QLIST(((QLitObject[]){ QLIT_QNUM(43), QLIT_QDICT(((QLitDictEntry[]){ From patchwork Fri Aug 17 15:05:03 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958939 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRg54NgSz9sBv for ; Sat, 18 Aug 2018 01:18:41 +1000 (AEST) Received: from localhost ([::1]:34697 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgWN-0001LR-74 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:18:39 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46181) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00033v-3t for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKB-0001gP-Tf for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56198 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKB-0001fT-Lx for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:03 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 53AC52635A; Fri, 17 Aug 2018 15:06:03 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 1CE281687A; Fri, 17 Aug 2018 15:06:01 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id EAF8F115356A; Fri, 17 Aug 2018 17:05:59 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:03 +0200 Message-Id: <20180817150559.16243-5-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:03 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:03 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 04/60] qmp-cmd-test: Split off qmp-test X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" qmp-test is for QMP protocol tests. Commit e4a426e75ef added generic, basic tests of query commands to it. Move them to their own test program qmp-cmd-test, to keep qmp-test focused on the protocol. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- MAINTAINERS | 1 + tests/Makefile.include | 3 + tests/qmp-cmd-test.c | 213 +++++++++++++++++++++++++++++++++++++++++ tests/qmp-test.c | 193 +------------------------------------ 4 files changed, 219 insertions(+), 191 deletions(-) create mode 100644 tests/qmp-cmd-test.c diff --git a/MAINTAINERS b/MAINTAINERS index 70651f7da0..606817a6c5 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1703,6 +1703,7 @@ F: monitor.c F: docs/devel/*qmp-* F: scripts/qmp/ F: tests/qmp-test.c +F: tests/qmp-cmd-test.c T: git git://repo.or.cz/qemu/armbru.git qapi-next Register API diff --git a/tests/Makefile.include b/tests/Makefile.include index 760a0f18b6..772cba6ef0 100644 --- a/tests/Makefile.include +++ b/tests/Makefile.include @@ -179,6 +179,8 @@ check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh check-qtest-generic-y = tests/qmp-test$(EXESUF) gcov-files-generic-y = monitor.c qapi/qmp-dispatch.c +check-qtest-generic-y += tests/qmp-cmd-test$(EXESUF) + check-qtest-generic-y += tests/device-introspect-test$(EXESUF) gcov-files-generic-y = qdev-monitor.c qmp.c check-qtest-generic-y += tests/cdrom-test$(EXESUF) @@ -771,6 +773,7 @@ libqos-usb-obj-y = $(libqos-spapr-obj-y) $(libqos-pc-obj-y) tests/libqos/usb.o libqos-virtio-obj-y = $(libqos-spapr-obj-y) $(libqos-pc-obj-y) tests/libqos/virtio.o tests/libqos/virtio-pci.o tests/libqos/virtio-mmio.o tests/libqos/malloc-generic.o tests/qmp-test$(EXESUF): tests/qmp-test.o +tests/qmp-cmd-test$(EXESUF): tests/qmp-cmd-test.o tests/device-introspect-test$(EXESUF): tests/device-introspect-test.o tests/rtc-test$(EXESUF): tests/rtc-test.o tests/m48t59-test$(EXESUF): tests/m48t59-test.o diff --git a/tests/qmp-cmd-test.c b/tests/qmp-cmd-test.c new file mode 100644 index 0000000000..c5b70df974 --- /dev/null +++ b/tests/qmp-cmd-test.c @@ -0,0 +1,213 @@ +/* + * QMP command test cases + * + * Copyright (c) 2017 Red Hat Inc. + * + * Authors: + * Markus Armbruster + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "libqtest.h" +#include "qapi/error.h" +#include "qapi/qapi-visit-introspect.h" +#include "qapi/qmp/qdict.h" +#include "qapi/qobject-input-visitor.h" + +const char common_args[] = "-nodefaults -machine none"; + +/* Query smoke tests */ + +static int query_error_class(const char *cmd) +{ + static struct { + const char *cmd; + int err_class; + } fails[] = { + /* Success depends on build configuration: */ +#ifndef CONFIG_SPICE + { "query-spice", ERROR_CLASS_COMMAND_NOT_FOUND }, +#endif +#ifndef CONFIG_VNC + { "query-vnc", ERROR_CLASS_GENERIC_ERROR }, + { "query-vnc-servers", ERROR_CLASS_GENERIC_ERROR }, +#endif +#ifndef CONFIG_REPLICATION + { "query-xen-replication-status", ERROR_CLASS_COMMAND_NOT_FOUND }, +#endif + /* Likewise, and require special QEMU command-line arguments: */ + { "query-acpi-ospm-status", ERROR_CLASS_GENERIC_ERROR }, + { "query-balloon", ERROR_CLASS_DEVICE_NOT_ACTIVE }, + { "query-hotpluggable-cpus", ERROR_CLASS_GENERIC_ERROR }, + { "query-vm-generation-id", ERROR_CLASS_GENERIC_ERROR }, + { NULL, -1 } + }; + int i; + + for (i = 0; fails[i].cmd; i++) { + if (!strcmp(cmd, fails[i].cmd)) { + return fails[i].err_class; + } + } + return -1; +} + +static void test_query(const void *data) +{ + const char *cmd = data; + int expected_error_class = query_error_class(cmd); + QDict *resp, *error; + const char *error_class; + + qtest_start(common_args); + + resp = qmp("{ 'execute': %s }", cmd); + error = qdict_get_qdict(resp, "error"); + error_class = error ? qdict_get_str(error, "class") : NULL; + + if (expected_error_class < 0) { + g_assert(qdict_haskey(resp, "return")); + } else { + g_assert(error); + g_assert_cmpint(qapi_enum_parse(&QapiErrorClass_lookup, error_class, + -1, &error_abort), + ==, expected_error_class); + } + qobject_unref(resp); + + qtest_end(); +} + +static bool query_is_blacklisted(const char *cmd) +{ + const char *blacklist[] = { + /* Not actually queries: */ + "add-fd", + /* Success depends on target arch: */ + "query-cpu-definitions", /* arm, i386, ppc, s390x */ + "query-gic-capabilities", /* arm */ + /* Success depends on target-specific build configuration: */ + "query-pci", /* CONFIG_PCI */ + /* Success depends on launching SEV guest */ + "query-sev-launch-measure", + /* Success depends on Host or Hypervisor SEV support */ + "query-sev", + "query-sev-capabilities", + NULL + }; + int i; + + for (i = 0; blacklist[i]; i++) { + if (!strcmp(cmd, blacklist[i])) { + return true; + } + } + return false; +} + +typedef struct { + SchemaInfoList *list; + GHashTable *hash; +} QmpSchema; + +static void qmp_schema_init(QmpSchema *schema) +{ + QDict *resp; + Visitor *qiv; + SchemaInfoList *tail; + + qtest_start(common_args); + resp = qmp("{ 'execute': 'query-qmp-schema' }"); + + qiv = qobject_input_visitor_new(qdict_get(resp, "return")); + visit_type_SchemaInfoList(qiv, NULL, &schema->list, &error_abort); + visit_free(qiv); + + qobject_unref(resp); + qtest_end(); + + schema->hash = g_hash_table_new(g_str_hash, g_str_equal); + + /* Build @schema: hash table mapping entity name to SchemaInfo */ + for (tail = schema->list; tail; tail = tail->next) { + g_hash_table_insert(schema->hash, tail->value->name, tail->value); + } +} + +static SchemaInfo *qmp_schema_lookup(QmpSchema *schema, const char *name) +{ + return g_hash_table_lookup(schema->hash, name); +} + +static void qmp_schema_cleanup(QmpSchema *schema) +{ + qapi_free_SchemaInfoList(schema->list); + g_hash_table_destroy(schema->hash); +} + +static bool object_type_has_mandatory_members(SchemaInfo *type) +{ + SchemaInfoObjectMemberList *tail; + + g_assert(type->meta_type == SCHEMA_META_TYPE_OBJECT); + + for (tail = type->u.object.members; tail; tail = tail->next) { + if (!tail->value->has_q_default) { + return true; + } + } + + return false; +} + +static void add_query_tests(QmpSchema *schema) +{ + SchemaInfoList *tail; + SchemaInfo *si, *arg_type, *ret_type; + char *test_name; + + /* Test the query-like commands */ + for (tail = schema->list; tail; tail = tail->next) { + si = tail->value; + if (si->meta_type != SCHEMA_META_TYPE_COMMAND) { + continue; + } + + if (query_is_blacklisted(si->name)) { + continue; + } + + arg_type = qmp_schema_lookup(schema, si->u.command.arg_type); + if (object_type_has_mandatory_members(arg_type)) { + continue; + } + + ret_type = qmp_schema_lookup(schema, si->u.command.ret_type); + if (ret_type->meta_type == SCHEMA_META_TYPE_OBJECT + && !ret_type->u.object.members) { + continue; + } + + test_name = g_strdup_printf("qmp/%s", si->name); + qtest_add_data_func(test_name, si->name, test_query); + g_free(test_name); + } +} + +int main(int argc, char *argv[]) +{ + QmpSchema schema; + int ret; + + g_test_init(&argc, &argv, NULL); + + qmp_schema_init(&schema); + add_query_tests(&schema); + ret = g_test_run(); + + qmp_schema_cleanup(&schema); + return ret; +} diff --git a/tests/qmp-test.c b/tests/qmp-test.c index 487ef946ed..dbc8f6c16e 100644 --- a/tests/qmp-test.c +++ b/tests/qmp-test.c @@ -4,7 +4,7 @@ * Copyright (c) 2017 Red Hat Inc. * * Authors: - * Markus Armbruster , + * Markus Armbruster * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. @@ -13,13 +13,10 @@ #include "qemu/osdep.h" #include "libqtest.h" #include "qapi/error.h" -#include "qapi/qapi-visit-introspect.h" #include "qapi/qapi-visit-misc.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qlist.h" #include "qapi/qobject-input-visitor.h" -#include "qapi/util.h" -#include "qapi/visitor.h" #include "qapi/qmp/qstring.h" const char common_args[] = "-nodefaults -machine none"; @@ -253,184 +250,6 @@ static void test_qmp_oob(void) qtest_quit(qts); } -/* Query smoke tests */ - -static int query_error_class(const char *cmd) -{ - static struct { - const char *cmd; - int err_class; - } fails[] = { - /* Success depends on build configuration: */ -#ifndef CONFIG_SPICE - { "query-spice", ERROR_CLASS_COMMAND_NOT_FOUND }, -#endif -#ifndef CONFIG_VNC - { "query-vnc", ERROR_CLASS_GENERIC_ERROR }, - { "query-vnc-servers", ERROR_CLASS_GENERIC_ERROR }, -#endif -#ifndef CONFIG_REPLICATION - { "query-xen-replication-status", ERROR_CLASS_COMMAND_NOT_FOUND }, -#endif - /* Likewise, and require special QEMU command-line arguments: */ - { "query-acpi-ospm-status", ERROR_CLASS_GENERIC_ERROR }, - { "query-balloon", ERROR_CLASS_DEVICE_NOT_ACTIVE }, - { "query-hotpluggable-cpus", ERROR_CLASS_GENERIC_ERROR }, - { "query-vm-generation-id", ERROR_CLASS_GENERIC_ERROR }, - { NULL, -1 } - }; - int i; - - for (i = 0; fails[i].cmd; i++) { - if (!strcmp(cmd, fails[i].cmd)) { - return fails[i].err_class; - } - } - return -1; -} - -static void test_query(const void *data) -{ - const char *cmd = data; - int expected_error_class = query_error_class(cmd); - QDict *resp, *error; - const char *error_class; - - qtest_start(common_args); - - resp = qmp("{ 'execute': %s }", cmd); - error = qdict_get_qdict(resp, "error"); - error_class = error ? qdict_get_str(error, "class") : NULL; - - if (expected_error_class < 0) { - g_assert(qdict_haskey(resp, "return")); - } else { - g_assert(error); - g_assert_cmpint(qapi_enum_parse(&QapiErrorClass_lookup, error_class, - -1, &error_abort), - ==, expected_error_class); - } - qobject_unref(resp); - - qtest_end(); -} - -static bool query_is_blacklisted(const char *cmd) -{ - const char *blacklist[] = { - /* Not actually queries: */ - "add-fd", - /* Success depends on target arch: */ - "query-cpu-definitions", /* arm, i386, ppc, s390x */ - "query-gic-capabilities", /* arm */ - /* Success depends on target-specific build configuration: */ - "query-pci", /* CONFIG_PCI */ - /* Success depends on launching SEV guest */ - "query-sev-launch-measure", - /* Success depends on Host or Hypervisor SEV support */ - "query-sev", - "query-sev-capabilities", - NULL - }; - int i; - - for (i = 0; blacklist[i]; i++) { - if (!strcmp(cmd, blacklist[i])) { - return true; - } - } - return false; -} - -typedef struct { - SchemaInfoList *list; - GHashTable *hash; -} QmpSchema; - -static void qmp_schema_init(QmpSchema *schema) -{ - QDict *resp; - Visitor *qiv; - SchemaInfoList *tail; - - qtest_start(common_args); - resp = qmp("{ 'execute': 'query-qmp-schema' }"); - - qiv = qobject_input_visitor_new(qdict_get(resp, "return")); - visit_type_SchemaInfoList(qiv, NULL, &schema->list, &error_abort); - visit_free(qiv); - - qobject_unref(resp); - qtest_end(); - - schema->hash = g_hash_table_new(g_str_hash, g_str_equal); - - /* Build @schema: hash table mapping entity name to SchemaInfo */ - for (tail = schema->list; tail; tail = tail->next) { - g_hash_table_insert(schema->hash, tail->value->name, tail->value); - } -} - -static SchemaInfo *qmp_schema_lookup(QmpSchema *schema, const char *name) -{ - return g_hash_table_lookup(schema->hash, name); -} - -static void qmp_schema_cleanup(QmpSchema *schema) -{ - qapi_free_SchemaInfoList(schema->list); - g_hash_table_destroy(schema->hash); -} - -static bool object_type_has_mandatory_members(SchemaInfo *type) -{ - SchemaInfoObjectMemberList *tail; - - g_assert(type->meta_type == SCHEMA_META_TYPE_OBJECT); - - for (tail = type->u.object.members; tail; tail = tail->next) { - if (!tail->value->has_q_default) { - return true; - } - } - - return false; -} - -static void add_query_tests(QmpSchema *schema) -{ - SchemaInfoList *tail; - SchemaInfo *si, *arg_type, *ret_type; - char *test_name; - - /* Test the query-like commands */ - for (tail = schema->list; tail; tail = tail->next) { - si = tail->value; - if (si->meta_type != SCHEMA_META_TYPE_COMMAND) { - continue; - } - - if (query_is_blacklisted(si->name)) { - continue; - } - - arg_type = qmp_schema_lookup(schema, si->u.command.arg_type); - if (object_type_has_mandatory_members(arg_type)) { - continue; - } - - ret_type = qmp_schema_lookup(schema, si->u.command.ret_type); - if (ret_type->meta_type == SCHEMA_META_TYPE_OBJECT - && !ret_type->u.object.members) { - continue; - } - - test_name = g_strdup_printf("qmp/%s", si->name); - qtest_add_data_func(test_name, si->name, test_query); - g_free(test_name); - } -} - /* Preconfig tests */ static void test_qmp_preconfig(void) @@ -474,19 +293,11 @@ static void test_qmp_preconfig(void) int main(int argc, char *argv[]) { - QmpSchema schema; - int ret; - g_test_init(&argc, &argv, NULL); qtest_add_func("qmp/protocol", test_qmp_protocol); qtest_add_func("qmp/oob", test_qmp_oob); - qmp_schema_init(&schema); - add_query_tests(&schema); qtest_add_func("qmp/preconfig", test_qmp_preconfig); - ret = g_test_run(); - - qmp_schema_cleanup(&schema); - return ret; + return g_test_run(); } From patchwork Fri Aug 17 15:05:04 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958931 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRTJ0cpVz9sC7 for ; Sat, 18 Aug 2018 01:10:11 +1000 (AEST) Received: from localhost ([::1]:34629 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgO8-0005dL-3o for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:10:08 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46189) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-000343-6T for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKC-0001h2-Kp for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46112 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKC-0001gW-Bl for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:04 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 0F19F40711E3; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BD0862026D74; Fri, 17 Aug 2018 15:06:03 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id EE6401153ABF; Fri, 17 Aug 2018 17:05:59 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:04 +0200 Message-Id: <20180817150559.16243-6-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 05/60] qmp-test: Cover syntax and lexical errors X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/libqtest.c | 17 +++++++++++++++++ tests/libqtest.h | 11 +++++++++++ tests/qmp-test.c | 41 ++++++++++++++++++++++++++++++++++++++++- 3 files changed, 68 insertions(+), 1 deletion(-) diff --git a/tests/libqtest.c b/tests/libqtest.c index 852ccff1ce..dc42347da3 100644 --- a/tests/libqtest.c +++ b/tests/libqtest.c @@ -604,6 +604,23 @@ void qtest_qmp_send(QTestState *s, const char *fmt, ...) va_end(ap); } +void qtest_qmp_send_raw(QTestState *s, const char *fmt, ...) +{ + bool log = getenv("QTEST_LOG") != NULL; + va_list ap; + char *str; + + va_start(ap, fmt); + str = g_strdup_vprintf(fmt, ap); + va_end(ap); + + if (log) { + fprintf(stderr, "%s", str); + } + socket_send(s->qmp_fd, str, strlen(str)); + g_free(str); +} + QDict *qtest_qmp_eventwait_ref(QTestState *s, const char *event) { QDict *response; diff --git a/tests/libqtest.h b/tests/libqtest.h index def1edaafa..1e831973ff 100644 --- a/tests/libqtest.h +++ b/tests/libqtest.h @@ -96,6 +96,17 @@ QDict *qtest_qmp(QTestState *s, const char *fmt, ...) void qtest_qmp_send(QTestState *s, const char *fmt, ...) GCC_FMT_ATTR(2, 3); +/** + * qtest_qmp_send_raw: + * @s: #QTestState instance to operate on. + * @fmt...: text to send, formatted like sprintf() + * + * Sends text to the QMP monitor verbatim. Need not be valid JSON; + * this is useful for negative tests. + */ +void qtest_qmp_send_raw(QTestState *s, const char *fmt, ...) + GCC_FMT_ATTR(2, 3); + /** * qtest_qmpv: * @s: #QTestState instance to operate on. diff --git a/tests/qmp-test.c b/tests/qmp-test.c index dbc8f6c16e..17153192fe 100644 --- a/tests/qmp-test.c +++ b/tests/qmp-test.c @@ -1,7 +1,7 @@ /* * QMP protocol test cases * - * Copyright (c) 2017 Red Hat Inc. + * Copyright (c) 2017-2018 Red Hat Inc. * * Authors: * Markus Armbruster @@ -42,10 +42,49 @@ static void test_version(QObject *version) visit_free(v); } +static bool recovered(QTestState *qts) +{ + QDict *resp; + bool ret; + + resp = qtest_qmp(qts, "{ 'execute': 'no-such-cmd' }"); + ret = !strcmp(get_error_class(resp), "CommandNotFound"); + qobject_unref(resp); + return ret; +} + static void test_malformed(QTestState *qts) { QDict *resp; + /* syntax error */ + qtest_qmp_send_raw(qts, "{]\n"); + resp = qtest_qmp_receive(qts); + g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); + qobject_unref(resp); + g_assert(recovered(qts)); + + /* lexical error: impossible byte outside string */ + qtest_qmp_send_raw(qts, "{\xFF"); + resp = qtest_qmp_receive(qts); + g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); + qobject_unref(resp); + g_assert(recovered(qts)); + + /* lexical error: impossible byte in string */ + qtest_qmp_send_raw(qts, "{'bad \xFF"); + resp = qtest_qmp_receive(qts); + g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); + qobject_unref(resp); + g_assert(recovered(qts)); + + /* lexical error: interpolation */ + qtest_qmp_send_raw(qts, "%%p\n"); + resp = qtest_qmp_receive(qts); + g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); + qobject_unref(resp); + g_assert(recovered(qts)); + /* Not even a dictionary */ resp = qtest_qmp(qts, "null"); g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); From patchwork Fri Aug 17 15:05:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958961 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS8W54Y3z9sCP for ; Sat, 18 Aug 2018 01:40:43 +1000 (AEST) Received: from localhost ([::1]:34815 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgrh-0002KT-3Q for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:40:41 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46183) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00033x-59 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKC-0001hQ-QQ for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56202 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKC-0001gY-Ck for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:04 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 117C55A755; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BD0252026D6C; Fri, 17 Aug 2018 15:06:03 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id F1D4A115606F; Fri, 17 Aug 2018 17:05:59 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:05 +0200 Message-Id: <20180817150559.16243-7-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 06/60] test-qga: Clean up how we test QGA synchronization X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" To permit recovering from arbitrary JSON parse errors, the JSON parser resets itself on lexical errors. We recommend sending a 0xff byte for that purpose, and test-qga covers this usage since commit 5229564b832. That commit had to add an ugly hack to qmp_fd_vsend() to make capable of sending this byte (it's designed to send only valid JSON). The previous commit added a way to send arbitrary text. Put that to use for this purpose, and drop the hack from qmp_fd_vsend(). Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/libqtest.c | 39 +++++++++++++++++++++------------------ tests/libqtest.h | 2 ++ tests/test-qga.c | 3 ++- 3 files changed, 25 insertions(+), 19 deletions(-) diff --git a/tests/libqtest.c b/tests/libqtest.c index dc42347da3..a7ad09fc86 100644 --- a/tests/libqtest.c +++ b/tests/libqtest.c @@ -507,16 +507,6 @@ void qmp_fd_vsend(int fd, const char *fmt, va_list ap) { QObject *qobj; - /* - * qobject_from_vjsonf_nofail() chokes on leading 0xff as invalid - * JSON, but tests/test-qga.c needs to send that to test QGA - * synchronization - */ - if (*fmt == '\377') { - socket_send(fd, fmt, 1); - fmt++; - } - /* Going through qobject ensures we escape strings properly */ qobj = qobject_from_vjsonf_nofail(fmt, ap); @@ -604,23 +594,36 @@ void qtest_qmp_send(QTestState *s, const char *fmt, ...) va_end(ap); } -void qtest_qmp_send_raw(QTestState *s, const char *fmt, ...) +void qmp_fd_vsend_raw(int fd, const char *fmt, va_list ap) { bool log = getenv("QTEST_LOG") != NULL; - va_list ap; - char *str; - - va_start(ap, fmt); - str = g_strdup_vprintf(fmt, ap); - va_end(ap); + char *str = g_strdup_vprintf(fmt, ap); if (log) { fprintf(stderr, "%s", str); } - socket_send(s->qmp_fd, str, strlen(str)); + socket_send(fd, str, strlen(str)); g_free(str); } +void qmp_fd_send_raw(int fd, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + qmp_fd_vsend_raw(fd, fmt, ap); + va_end(ap); +} + +void qtest_qmp_send_raw(QTestState *s, const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + qmp_fd_vsend_raw(s->qmp_fd, fmt, ap); + va_end(ap); +} + QDict *qtest_qmp_eventwait_ref(QTestState *s, const char *event) { QDict *response; diff --git a/tests/libqtest.h b/tests/libqtest.h index 1e831973ff..2d1eb4b282 100644 --- a/tests/libqtest.h +++ b/tests/libqtest.h @@ -959,6 +959,8 @@ static inline int64_t clock_set(int64_t val) QDict *qmp_fd_receive(int fd); void qmp_fd_vsend(int fd, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); void qmp_fd_send(int fd, const char *fmt, ...) GCC_FMT_ATTR(2, 3); +void qmp_fd_send_raw(int fd, const char *fmt, ...) GCC_FMT_ATTR(2, 3); +void qmp_fd_vsend_raw(int fd, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); QDict *qmp_fdv(int fd, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); QDict *qmp_fd(int fd, const char *fmt, ...) GCC_FMT_ATTR(2, 3); diff --git a/tests/test-qga.c b/tests/test-qga.c index c552cc0125..f69cdf6c03 100644 --- a/tests/test-qga.c +++ b/tests/test-qga.c @@ -147,8 +147,9 @@ static void test_qga_sync_delimited(gconstpointer fix) unsigned char c; QDict *ret; + qmp_fd_send_raw(fixture->fd, "\xff"); qmp_fd_send(fixture->fd, - "\xff{'execute': 'guest-sync-delimited'," + "{'execute': 'guest-sync-delimited'," " 'arguments': {'id': %u } }", r); From patchwork Fri Aug 17 15:05:06 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958957 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS535FVqz9sC7 for ; Sat, 18 Aug 2018 01:37:43 +1000 (AEST) Received: from localhost ([::1]:34799 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgon-0008NC-7N for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:37:41 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46185) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00033y-5V for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKD-0001ht-5m for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46430 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKC-0001gs-Ny for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:04 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4EF28819703D; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 06E132156712; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 011A811564C4; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:06 +0200 Message-Id: <20180817150559.16243-8-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 07/60] check-qjson: Cover escaped characters more thoroughly, part 1 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" escaped_string() first tests double quoted strings, then repeats a few tests with single quotes. Repeat all of them: store the strings to test without quotes, and wrap them in either kind of quote for testing. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 96 +++++++++++++++++++++++++++------------------ 1 file changed, 57 insertions(+), 39 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 188f683317..2f1890929d 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -22,55 +22,73 @@ #include "qapi/qmp/qstring.h" #include "qemu-common.h" +static QString *from_json_str(const char *jstr, Error **errp, bool single) +{ + char quote = single ? '\'' : '"'; + char *qjstr = g_strdup_printf("%c%s%c", quote, jstr, quote); + QString *ret = qobject_to(QString, qobject_from_json(qjstr, errp)); + + g_free(qjstr); + return ret; +} + +static char *to_json_str(QString *str) +{ + QString *json = qobject_to_json(QOBJECT(str)); + char *jstr; + + if (!json) { + return NULL; + } + /* peel off double quotes */ + jstr = g_strndup(qstring_get_str(json) + 1, + qstring_get_length(json) - 2); + qobject_unref(json); + return jstr; +} + static void escaped_string(void) { - int i; struct { - const char *encoded; - const char *decoded; + /* Content of JSON string to parse with qobject_from_json() */ + const char *json_in; + /* Expected parse output; to unparse with qobject_to_json() */ + const char *utf8_out; int skip; } test_cases[] = { - { "\"\\b\"", "\b" }, - { "\"\\f\"", "\f" }, - { "\"\\n\"", "\n" }, - { "\"\\r\"", "\r" }, - { "\"\\t\"", "\t" }, - { "\"/\"", "/" }, - { "\"\\/\"", "/", .skip = 1 }, - { "\"\\\\\"", "\\" }, - { "\"\\\"\"", "\"" }, - { "\"hello world \\\"embedded string\\\"\"", + { "\\b", "\b" }, + { "\\f", "\f" }, + { "\\n", "\n" }, + { "\\r", "\r" }, + { "\\t", "\t" }, + { "/", "/" }, + { "\\/", "/", .skip = 1 }, + { "\\\\", "\\" }, + { "\\\"", "\"" }, + { "hello world \\\"embedded string\\\"", "hello world \"embedded string\"" }, - { "\"hello world\\nwith new line\"", "hello world\nwith new line" }, - { "\"single byte utf-8 \\u0020\"", "single byte utf-8 ", .skip = 1 }, - { "\"double byte utf-8 \\u00A2\"", "double byte utf-8 \xc2\xa2" }, - { "\"triple byte utf-8 \\u20AC\"", "triple byte utf-8 \xe2\x82\xac" }, - { "'\\b'", "\b", .skip = 1 }, - { "'\\f'", "\f", .skip = 1 }, - { "'\\n'", "\n", .skip = 1 }, - { "'\\r'", "\r", .skip = 1 }, - { "'\\t'", "\t", .skip = 1 }, - { "'\\/'", "/", .skip = 1 }, - { "'\\\\'", "\\", .skip = 1 }, + { "hello world\\nwith new line", "hello world\nwith new line" }, + { "single byte utf-8 \\u0020", "single byte utf-8 ", .skip = 1 }, + { "double byte utf-8 \\u00A2", "double byte utf-8 \xc2\xa2" }, + { "triple byte utf-8 \\u20AC", "triple byte utf-8 \xe2\x82\xac" }, {} }; + int i, j; + QString *cstr; + char *jstr; - for (i = 0; test_cases[i].encoded; i++) { - QObject *obj; - QString *str; - - obj = qobject_from_json(test_cases[i].encoded, &error_abort); - str = qobject_to(QString, obj); - g_assert(str); - g_assert_cmpstr(qstring_get_str(str), ==, test_cases[i].decoded); - - if (test_cases[i].skip == 0) { - str = qobject_to_json(obj); - g_assert_cmpstr(qstring_get_str(str), ==, test_cases[i].encoded); - qobject_unref(obj); + for (i = 0; test_cases[i].json_in; i++) { + for (j = 0; j < 2; j++) { + cstr = from_json_str(test_cases[i].json_in, &error_abort, j); + g_assert_cmpstr(qstring_get_try_str(cstr), + ==, test_cases[i].utf8_out); + if (test_cases[i].skip == 0) { + jstr = to_json_str(cstr); + g_assert_cmpstr(jstr, ==, test_cases[i].json_in); + g_free(jstr); + } + qobject_unref(cstr); } - - qobject_unref(str); } } From patchwork Fri Aug 17 15:05:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958935 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRbC0Phfz9s4Z for ; Sat, 18 Aug 2018 01:15:19 +1000 (AEST) Received: from localhost ([::1]:34673 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgT5-0005Ej-Qi for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:15:15 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46193) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-000347-7X for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKC-0001hX-RV for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57078 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKC-0001gc-Hh for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:04 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2CFD8BD9C; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 06C181687A; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 0478C1156572; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:07 +0200 Message-Id: <20180817150559.16243-9-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 08/60] check-qjson: Streamline escaped_string()'s test strings X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Merge a few closely related test strings, and drop a few redundant ones. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 2f1890929d..730de46815 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -56,18 +56,8 @@ static void escaped_string(void) const char *utf8_out; int skip; } test_cases[] = { - { "\\b", "\b" }, - { "\\f", "\f" }, - { "\\n", "\n" }, - { "\\r", "\r" }, - { "\\t", "\t" }, - { "/", "/" }, + { "\\b\\f\\n\\r\\t\\\\\\\"", "\b\f\n\r\t\\\"" }, { "\\/", "/", .skip = 1 }, - { "\\\\", "\\" }, - { "\\\"", "\"" }, - { "hello world \\\"embedded string\\\"", - "hello world \"embedded string\"" }, - { "hello world\\nwith new line", "hello world\nwith new line" }, { "single byte utf-8 \\u0020", "single byte utf-8 ", .skip = 1 }, { "double byte utf-8 \\u00A2", "double byte utf-8 \xc2\xa2" }, { "triple byte utf-8 \\u20AC", "triple byte utf-8 \xe2\x82\xac" }, From patchwork Fri Aug 17 15:05:08 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958944 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRpK6mmcz9sBx for ; Sat, 18 Aug 2018 01:24:57 +1000 (AEST) Received: from localhost ([::1]:34733 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgcR-0007WE-F3 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:24:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46216) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00034T-Jm for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKD-0001id-Je for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46120 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKC-0001gu-SJ for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:05 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5A2F54075786; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0FCE72166BA5; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 07E94110E7CD; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:08 +0200 Message-Id: <20180817150559.16243-10-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 09/60] check-qjson: Cover escaped characters more thoroughly, part 2 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Cover escaped single quote, surrogates, invalid escapes, and noncharacters. This demonstrates that valid surrogate pairs are misinterpreted, and invalid surrogates and noncharacters aren't rejected. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 62 ++++++++++++++++++++++++++++++++++++++------- 1 file changed, 53 insertions(+), 9 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 730de46815..ce843283eb 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -57,10 +57,49 @@ static void escaped_string(void) int skip; } test_cases[] = { { "\\b\\f\\n\\r\\t\\\\\\\"", "\b\f\n\r\t\\\"" }, - { "\\/", "/", .skip = 1 }, + { "\\/\\'", "/'", .skip = 1 }, { "single byte utf-8 \\u0020", "single byte utf-8 ", .skip = 1 }, { "double byte utf-8 \\u00A2", "double byte utf-8 \xc2\xa2" }, { "triple byte utf-8 \\u20AC", "triple byte utf-8 \xe2\x82\xac" }, + { "quadruple byte utf-8 \\uD834\\uDD1E", /* U+1D11E */ + /* bug: want \xF0\x9D\x84\x9E */ + "quadruple byte utf-8 \xED\xA0\xB4\xED\xB4\x9E", .skip = 1 }, + { "\\", NULL }, + { "\\z", NULL }, + { "\\ux", NULL }, + { "\\u1x", NULL }, + { "\\u12x", NULL }, + { "\\u123x", NULL }, + { "\\u12345", "\341\210\2645" }, + { "\\u0000x", "x", .skip = 1}, /* bug: want \xC0\x80x */ + { "unpaired leading surrogate \\uD800", + /* bug: not rejected */ + "unpaired leading surrogate \355\240\200", .skip = 1 }, + { "unpaired leading surrogate \\uD800\\uCAFE", + /* bug: not rejected */ + "unpaired leading surrogate \355\240\200\354\253\276", .skip = 1 }, + { "unpaired leading surrogate \\uD800\\uD801\\uDC02", + /* bug: not rejected */ + "unpaired leading surrogate \355\240\200\355\240\201\355\260\202", + .skip = 1 }, + { "unpaired trailing surrogate \\uDC00", + /* bug: not rejected */ + "unpaired trailing surrogate \355\260\200", .skip = 1}, + { "backward surrogate pair \\uDC00\\uD800", + /* bug: not rejected */ + "backward surrogate pair \355\260\200\355\240\200", .skip = 1}, + { "noncharacter U+FDD0 \\uFDD0", + /* bug: not rejected */ + "noncharacter U+FDD0 \xEF\xB7\x90", .skip = 1}, + { "noncharacter U+FDEF \\uFDEF", + /* bug: not rejected */ + "noncharacter U+FDEF \xEF\xB7\xAF", .skip = 1}, + { "noncharacter U+1FFFE \\uD87F\\uDFFE", + /* bug: not rejected */ + "noncharacter U+1FFFE \xED\xA1\xBF\xED\xBF\xBE", .skip = 1}, + { "noncharacter U+10FFFF \\uDC3F\\uDFFF", + /* bug: not rejected */ + "noncharacter U+10FFFF \xED\xB0\xBF\xED\xBF\xBF", .skip = 1}, {} }; int i, j; @@ -69,15 +108,20 @@ static void escaped_string(void) for (i = 0; test_cases[i].json_in; i++) { for (j = 0; j < 2; j++) { - cstr = from_json_str(test_cases[i].json_in, &error_abort, j); - g_assert_cmpstr(qstring_get_try_str(cstr), - ==, test_cases[i].utf8_out); - if (test_cases[i].skip == 0) { - jstr = to_json_str(cstr); - g_assert_cmpstr(jstr, ==, test_cases[i].json_in); - g_free(jstr); + if (test_cases[i].utf8_out) { + cstr = from_json_str(test_cases[i].json_in, &error_abort, j); + g_assert_cmpstr(qstring_get_try_str(cstr), + ==, test_cases[i].utf8_out); + if (!test_cases[i].skip) { + jstr = to_json_str(cstr); + g_assert_cmpstr(jstr, ==, test_cases[i].json_in); + g_free(jstr); + } + qobject_unref(cstr); + } else { + cstr = from_json_str(test_cases[i].json_in, NULL, j); + g_assert(!cstr); } - qobject_unref(cstr); } } } From patchwork Fri Aug 17 15:05:09 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958938 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRg33DGmz9sBv for ; Sat, 18 Aug 2018 01:18:37 +1000 (AEST) Received: from localhost ([::1]:34696 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgWI-0001KI-Hg for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:18:34 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46190) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-000344-6k for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:13 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKC-0001hg-Tr for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56208 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKC-0001gg-Jy for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:04 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3A87C5A759; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 11D6C10D18E0; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 0B656110E7CE; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:09 +0200 Message-Id: <20180817150559.16243-11-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 10/60] check-qjson: Consolidate partly redundant string tests X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" simple_string() and single_quote_string() have become redundant with escaped_string(), except fot embedded single and double quotes. Replace them by a test that covers just that. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 64 ++++++++++----------------------------------- 1 file changed, 14 insertions(+), 50 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index ce843283eb..e35942d922 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -126,59 +126,24 @@ static void escaped_string(void) } } -static void simple_string(void) +static void string_with_quotes(void) { - int i; - struct { - const char *encoded; - const char *decoded; - } test_cases[] = { - { "\"hello world\"", "hello world" }, - { "\"the quick brown fox jumped over the fence\"", - "the quick brown fox jumped over the fence" }, - {} + const char *test_cases[] = { + "\"the bee's knees\"", + "'double quote \"'", + NULL }; - - for (i = 0; test_cases[i].encoded; i++) { - QObject *obj; - QString *str; - - obj = qobject_from_json(test_cases[i].encoded, &error_abort); - str = qobject_to(QString, obj); - g_assert(str); - g_assert(strcmp(qstring_get_str(str), test_cases[i].decoded) == 0); - - str = qobject_to_json(obj); - g_assert(strcmp(qstring_get_str(str), test_cases[i].encoded) == 0); - - qobject_unref(obj); - - qobject_unref(str); - } -} - -static void single_quote_string(void) -{ int i; - struct { - const char *encoded; - const char *decoded; - } test_cases[] = { - { "'hello world'", "hello world" }, - { "'the quick brown fox \\' jumped over the fence'", - "the quick brown fox ' jumped over the fence" }, - {} - }; + QString *str; + char *cstr; - for (i = 0; test_cases[i].encoded; i++) { - QObject *obj; - QString *str; - - obj = qobject_from_json(test_cases[i].encoded, &error_abort); - str = qobject_to(QString, obj); + for (i = 0; test_cases[i]; i++) { + str = qobject_to(QString, + qobject_from_json(test_cases[i], &error_abort)); g_assert(str); - g_assert(strcmp(qstring_get_str(str), test_cases[i].decoded) == 0); - + cstr = g_strndup(test_cases[i] + 1, strlen(test_cases[i]) - 2); + g_assert_cmpstr(qstring_get_str(str), ==, cstr); + g_free(cstr); qobject_unref(str); } } @@ -1525,10 +1490,9 @@ int main(int argc, char **argv) { g_test_init(&argc, &argv, NULL); - g_test_add_func("/literals/string/simple", simple_string); g_test_add_func("/literals/string/escaped", escaped_string); + g_test_add_func("/literals/string/quotes", string_with_quotes); g_test_add_func("/literals/string/utf8", utf8_string); - g_test_add_func("/literals/string/single_quote", single_quote_string); g_test_add_func("/literals/string/vararg", vararg_string); g_test_add_func("/literals/number/simple", simple_number); From patchwork Fri Aug 17 15:05:10 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958970 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSF34vKnz9sC2 for ; Sat, 18 Aug 2018 01:44:39 +1000 (AEST) Received: from localhost ([::1]:34837 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgvV-0005dW-7o for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:44:37 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46587) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKV-0003Hj-Ei for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKE-0001js-DX for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:15 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57086 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKD-0001hd-H7 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:05 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C02E7C12C9; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2257B2026D6C; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 105FD110E7CF; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:10 +0200 Message-Id: <20180817150559.16243-12-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 11/60] check-qjson: Cover UTF-8 in single quoted strings X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" utf8_string() tests only double quoted strings. Cover single quoted strings, too: store the strings to test without quotes, then wrap them in either kind of quote. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 427 ++++++++++++++++++++++---------------------- 1 file changed, 214 insertions(+), 213 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index e35942d922..6a2bfd0f3e 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -175,10 +175,14 @@ static void utf8_string(void) * http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt */ static const struct { + /* Content of JSON string to parse with qobject_from_json() */ const char *json_in; + /* Expected parse output */ const char *utf8_out; - const char *json_out; /* defaults to @json_in */ - const char *utf8_in; /* defaults to @utf8_out */ + /* Expected unparse output, defaults to @json_in */ + const char *json_out; + /* Expected parse output for @json_out, defaults to @utf8_out */ + const char *utf8_in; } test_cases[] = { /* * Bug markers used here: @@ -196,72 +200,72 @@ static void utf8_string(void) /* 1 Some correct UTF-8 text */ { /* a bit of German */ - "\"Falsches \xC3\x9C" "ben von Xylophonmusik qu\xC3\xA4lt" - " jeden gr\xC3\xB6\xC3\x9F" "eren Zwerg.\"", "Falsches \xC3\x9C" "ben von Xylophonmusik qu\xC3\xA4lt" " jeden gr\xC3\xB6\xC3\x9F" "eren Zwerg.", - "\"Falsches \\u00DCben von Xylophonmusik qu\\u00E4lt" - " jeden gr\\u00F6\\u00DFeren Zwerg.\"", + "Falsches \xC3\x9C" "ben von Xylophonmusik qu\xC3\xA4lt" + " jeden gr\xC3\xB6\xC3\x9F" "eren Zwerg.", + "Falsches \\u00DCben von Xylophonmusik qu\\u00E4lt" + " jeden gr\\u00F6\\u00DFeren Zwerg.", }, { /* a bit of Greek */ - "\"\xCE\xBA\xE1\xBD\xB9\xCF\x83\xCE\xBC\xCE\xB5\"", "\xCE\xBA\xE1\xBD\xB9\xCF\x83\xCE\xBC\xCE\xB5", - "\"\\u03BA\\u1F79\\u03C3\\u03BC\\u03B5\"", + "\xCE\xBA\xE1\xBD\xB9\xCF\x83\xCE\xBC\xCE\xB5", + "\\u03BA\\u1F79\\u03C3\\u03BC\\u03B5", }, /* 2 Boundary condition test cases */ /* 2.1 First possible sequence of a certain length */ /* 2.1.1 1 byte U+0000 */ { - "\"\\u0000\"", + "\\u0000", "", /* bug: want overlong "\xC0\x80" */ - "\"\\u0000\"", + "\\u0000", "\xC0\x80", }, /* 2.1.2 2 bytes U+0080 */ { - "\"\xC2\x80\"", "\xC2\x80", - "\"\\u0080\"", + "\xC2\x80", + "\\u0080", }, /* 2.1.3 3 bytes U+0800 */ { - "\"\xE0\xA0\x80\"", "\xE0\xA0\x80", - "\"\\u0800\"", + "\xE0\xA0\x80", + "\\u0800", }, /* 2.1.4 4 bytes U+10000 */ { - "\"\xF0\x90\x80\x80\"", "\xF0\x90\x80\x80", - "\"\\uD800\\uDC00\"", + "\xF0\x90\x80\x80", + "\\uD800\\uDC00", }, /* 2.1.5 5 bytes U+200000 */ { - "\"\xF8\x88\x80\x80\x80\"", + "\xF8\x88\x80\x80\x80", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xF8\x88\x80\x80\x80", }, /* 2.1.6 6 bytes U+4000000 */ { - "\"\xFC\x84\x80\x80\x80\x80\"", + "\xFC\x84\x80\x80\x80\x80", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFC\x84\x80\x80\x80\x80", }, /* 2.2 Last possible sequence of a certain length */ /* 2.2.1 1 byte U+007F */ { - "\"\x7F\"", "\x7F", - "\"\\u007F\"", + "\x7F", + "\\u007F", }, /* 2.2.2 2 bytes U+07FF */ { - "\"\xDF\xBF\"", "\xDF\xBF", - "\"\\u07FF\"", + "\xDF\xBF", + "\\u07FF", }, /* * 2.2.3 3 bytes U+FFFC @@ -273,122 +277,122 @@ static void utf8_string(void) * U+FFFC here. */ { - "\"\xEF\xBF\xBC\"", "\xEF\xBF\xBC", - "\"\\uFFFC\"", + "\xEF\xBF\xBC", + "\\uFFFC", }, /* 2.2.4 4 bytes U+1FFFFF */ { - "\"\xF7\xBF\xBF\xBF\"", + "\xF7\xBF\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xF7\xBF\xBF\xBF", }, /* 2.2.5 5 bytes U+3FFFFFF */ { - "\"\xFB\xBF\xBF\xBF\xBF\"", + "\xFB\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFB\xBF\xBF\xBF\xBF", }, /* 2.2.6 6 bytes U+7FFFFFFF */ { - "\"\xFD\xBF\xBF\xBF\xBF\xBF\"", + "\xFD\xBF\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFD\xBF\xBF\xBF\xBF\xBF", }, /* 2.3 Other boundary conditions */ { /* last one before surrogate range: U+D7FF */ - "\"\xED\x9F\xBF\"", "\xED\x9F\xBF", - "\"\\uD7FF\"", + "\xED\x9F\xBF", + "\\uD7FF", }, { /* first one after surrogate range: U+E000 */ - "\"\xEE\x80\x80\"", "\xEE\x80\x80", - "\"\\uE000\"", + "\xEE\x80\x80", + "\\uE000", }, { /* last one in BMP: U+FFFD */ - "\"\xEF\xBF\xBD\"", "\xEF\xBF\xBD", - "\"\\uFFFD\"", + "\xEF\xBF\xBD", + "\\uFFFD", }, { /* last one in last plane: U+10FFFD */ - "\"\xF4\x8F\xBF\xBD\"", "\xF4\x8F\xBF\xBD", - "\"\\uDBFF\\uDFFD\"" + "\xF4\x8F\xBF\xBD", + "\\uDBFF\\uDFFD" }, { /* first one beyond Unicode range: U+110000 */ - "\"\xF4\x90\x80\x80\"", "\xF4\x90\x80\x80", - "\"\\uFFFD\"", + "\xF4\x90\x80\x80", + "\\uFFFD", }, /* 3 Malformed sequences */ /* 3.1 Unexpected continuation bytes */ /* 3.1.1 First continuation byte */ { - "\"\x80\"", + "\x80", "\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, /* 3.1.2 Last continuation byte */ { - "\"\xBF\"", + "\xBF", "\xBF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, /* 3.1.3 2 continuation bytes */ { - "\"\x80\xBF\"", + "\x80\xBF", "\x80\xBF", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, /* 3.1.4 3 continuation bytes */ { - "\"\x80\xBF\x80\"", + "\x80\xBF\x80", "\x80\xBF\x80", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.5 4 continuation bytes */ { - "\"\x80\xBF\x80\xBF\"", + "\x80\xBF\x80\xBF", "\x80\xBF\x80\xBF", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.6 5 continuation bytes */ { - "\"\x80\xBF\x80\xBF\x80\"", + "\x80\xBF\x80\xBF\x80", "\x80\xBF\x80\xBF\x80", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.7 6 continuation bytes */ { - "\"\x80\xBF\x80\xBF\x80\xBF\"", + "\x80\xBF\x80\xBF\x80\xBF", "\x80\xBF\x80\xBF\x80\xBF", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.8 7 continuation bytes */ { - "\"\x80\xBF\x80\xBF\x80\xBF\x80\"", + "\x80\xBF\x80\xBF\x80\xBF\x80", "\x80\xBF\x80\xBF\x80\xBF\x80", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.9 Sequence of all 64 possible continuation bytes */ { - "\"\x80\x81\x82\x83\x84\x85\x86\x87" + "\x80\x81\x82\x83\x84\x85\x86\x87" "\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F" "\x90\x91\x92\x93\x94\x95\x96\x97" "\x98\x99\x9A\x9B\x9C\x9D\x9E\x9F" "\xA0\xA1\xA2\xA3\xA4\xA5\xA6\xA7" "\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF" "\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7" - "\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF\"", + "\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF", /* bug: not corrected */ "\x80\x81\x82\x83\x84\x85\x86\x87" "\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F" @@ -398,27 +402,27 @@ static void utf8_string(void) "\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF" "\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7" "\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF", - "\"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" - "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\"" + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" }, /* 3.2 Lonely start characters */ /* 3.2.1 All 32 first bytes of 2-byte sequences, followed by space */ { - "\"\xC0 \xC1 \xC2 \xC3 \xC4 \xC5 \xC6 \xC7 " + "\xC0 \xC1 \xC2 \xC3 \xC4 \xC5 \xC6 \xC7 " "\xC8 \xC9 \xCA \xCB \xCC \xCD \xCE \xCF " "\xD0 \xD1 \xD2 \xD3 \xD4 \xD5 \xD6 \xD7 " - "\xD8 \xD9 \xDA \xDB \xDC \xDD \xDE \xDF \"", + "\xD8 \xD9 \xDA \xDB \xDC \xDD \xDE \xDF ", NULL, /* bug: rejected */ - "\"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " - "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \"", + "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " + "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", "\xC0 \xC1 \xC2 \xC3 \xC4 \xC5 \xC6 \xC7 " "\xC8 \xC9 \xCA \xCB \xCC \xCD \xCE \xCF " "\xD0 \xD1 \xD2 \xD3 \xD4 \xD5 \xD6 \xD7 " @@ -426,159 +430,159 @@ static void utf8_string(void) }, /* 3.2.2 All 16 first bytes of 3-byte sequences, followed by space */ { - "\"\xE0 \xE1 \xE2 \xE3 \xE4 \xE5 \xE6 \xE7 " - "\xE8 \xE9 \xEA \xEB \xEC \xED \xEE \xEF \"", + "\xE0 \xE1 \xE2 \xE3 \xE4 \xE5 \xE6 \xE7 " + "\xE8 \xE9 \xEA \xEB \xEC \xED \xEE \xEF ", /* bug: not corrected */ "\xE0 \xE1 \xE2 \xE3 \xE4 \xE5 \xE6 \xE7 " "\xE8 \xE9 \xEA \xEB \xEC \xED \xEE \xEF ", - "\"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " - "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \"", + "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " + "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", }, /* 3.2.3 All 8 first bytes of 4-byte sequences, followed by space */ { - "\"\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 \"", + "\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ", NULL, /* bug: rejected */ - "\"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \"", + "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", "\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ", }, /* 3.2.4 All 4 first bytes of 5-byte sequences, followed by space */ { - "\"\xF8 \xF9 \xFA \xFB \"", + "\xF8 \xF9 \xFA \xFB ", NULL, /* bug: rejected */ - "\"\\uFFFD \\uFFFD \\uFFFD \\uFFFD \"", + "\\uFFFD \\uFFFD \\uFFFD \\uFFFD ", "\xF8 \xF9 \xFA \xFB ", }, /* 3.2.5 All 2 first bytes of 6-byte sequences, followed by space */ { - "\"\xFC \xFD \"", + "\xFC \xFD ", NULL, /* bug: rejected */ - "\"\\uFFFD \\uFFFD \"", + "\\uFFFD \\uFFFD ", "\xFC \xFD ", }, /* 3.3 Sequences with last continuation byte missing */ /* 3.3.1 2-byte sequence with last byte missing (U+0000) */ { - "\"\xC0\"", + "\xC0", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xC0", }, /* 3.3.2 3-byte sequence with last byte missing (U+0000) */ { - "\"\xE0\x80\"", + "\xE0\x80", "\xE0\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, /* 3.3.3 4-byte sequence with last byte missing (U+0000) */ { - "\"\xF0\x80\x80\"", + "\xF0\x80\x80", "\xF0\x80\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, /* 3.3.4 5-byte sequence with last byte missing (U+0000) */ { - "\"\xF8\x80\x80\x80\"", + "\xF8\x80\x80\x80", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xF8\x80\x80\x80", }, /* 3.3.5 6-byte sequence with last byte missing (U+0000) */ { - "\"\xFC\x80\x80\x80\x80\"", + "\xFC\x80\x80\x80\x80", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFC\x80\x80\x80\x80", }, /* 3.3.6 2-byte sequence with last byte missing (U+07FF) */ { - "\"\xDF\"", + "\xDF", "\xDF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, /* 3.3.7 3-byte sequence with last byte missing (U+FFFF) */ { - "\"\xEF\xBF\"", + "\xEF\xBF", "\xEF\xBF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, /* 3.3.8 4-byte sequence with last byte missing (U+1FFFFF) */ { - "\"\xF7\xBF\xBF\"", + "\xF7\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xF7\xBF\xBF", }, /* 3.3.9 5-byte sequence with last byte missing (U+3FFFFFF) */ { - "\"\xFB\xBF\xBF\xBF\"", + "\xFB\xBF\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFB\xBF\xBF\xBF", }, /* 3.3.10 6-byte sequence with last byte missing (U+7FFFFFFF) */ { - "\"\xFD\xBF\xBF\xBF\xBF\"", + "\xFD\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFD\xBF\xBF\xBF\xBF", }, /* 3.4 Concatenation of incomplete sequences */ { - "\"\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80" - "\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF\"", + "\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80" + "\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" - "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", "\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80" "\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF", }, /* 3.5 Impossible bytes */ { - "\"\xFE\"", + "\xFE", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFE", }, { - "\"\xFF\"", + "\xFF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFF", }, { - "\"\xFE\xFE\xFF\xFF\"", + "\xFE\xFE\xFF\xFF", NULL, /* bug: rejected */ - "\"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD", "\xFE\xFE\xFF\xFF", }, /* 4 Overlong sequences */ /* 4.1 Overlong '/' */ { - "\"\xC0\xAF\"", + "\xC0\xAF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xC0\xAF", }, { - "\"\xE0\x80\xAF\"", + "\xE0\x80\xAF", "\xE0\x80\xAF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { - "\"\xF0\x80\x80\xAF\"", + "\xF0\x80\x80\xAF", "\xF0\x80\x80\xAF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { - "\"\xF8\x80\x80\x80\xAF\"", + "\xF8\x80\x80\x80\xAF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xF8\x80\x80\x80\xAF", }, { - "\"\xFC\x80\x80\x80\x80\xAF\"", + "\xFC\x80\x80\x80\x80\xAF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFC\x80\x80\x80\x80\xAF", }, /* @@ -589,16 +593,16 @@ static void utf8_string(void) */ { /* \U+007F */ - "\"\xC1\xBF\"", + "\xC1\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xC1\xBF", }, { /* \U+07FF */ - "\"\xE0\x9F\xBF\"", + "\xE0\x9F\xBF", "\xE0\x9F\xBF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* @@ -607,181 +611,181 @@ static void utf8_string(void) * noncharacter. Testing U+FFFC seems more useful. See * also 2.2.3 */ - "\"\xF0\x8F\xBF\xBC\"", + "\xF0\x8F\xBF\xBC", "\xF0\x8F\xBF\xBC", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+1FFFFF */ - "\"\xF8\x87\xBF\xBF\xBF\"", + "\xF8\x87\xBF\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xF8\x87\xBF\xBF\xBF", }, { /* \U+3FFFFFF */ - "\"\xFC\x83\xBF\xBF\xBF\xBF\"", + "\xFC\x83\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFC\x83\xBF\xBF\xBF\xBF", }, /* 4.3 Overlong representation of the NUL character */ { /* \U+0000 */ - "\"\xC0\x80\"", + "\xC0\x80", NULL, /* bug: rejected */ - "\"\\u0000\"", + "\\u0000", "\xC0\x80", }, { /* \U+0000 */ - "\"\xE0\x80\x80\"", + "\xE0\x80\x80", "\xE0\x80\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+0000 */ - "\"\xF0\x80\x80\x80\"", + "\xF0\x80\x80\x80", "\xF0\x80\x80\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+0000 */ - "\"\xF8\x80\x80\x80\x80\"", + "\xF8\x80\x80\x80\x80", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xF8\x80\x80\x80\x80", }, { /* \U+0000 */ - "\"\xFC\x80\x80\x80\x80\x80\"", + "\xFC\x80\x80\x80\x80\x80", NULL, /* bug: rejected */ - "\"\\uFFFD\"", + "\\uFFFD", "\xFC\x80\x80\x80\x80\x80", }, /* 5 Illegal code positions */ /* 5.1 Single UTF-16 surrogates */ { /* \U+D800 */ - "\"\xED\xA0\x80\"", + "\xED\xA0\x80", "\xED\xA0\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+DB7F */ - "\"\xED\xAD\xBF\"", + "\xED\xAD\xBF", "\xED\xAD\xBF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+DB80 */ - "\"\xED\xAE\x80\"", + "\xED\xAE\x80", "\xED\xAE\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+DBFF */ - "\"\xED\xAF\xBF\"", + "\xED\xAF\xBF", "\xED\xAF\xBF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+DC00 */ - "\"\xED\xB0\x80\"", + "\xED\xB0\x80", "\xED\xB0\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+DF80 */ - "\"\xED\xBE\x80\"", + "\xED\xBE\x80", "\xED\xBE\x80", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+DFFF */ - "\"\xED\xBF\xBF\"", + "\xED\xBF\xBF", "\xED\xBF\xBF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, /* 5.2 Paired UTF-16 surrogates */ { /* \U+D800\U+DC00 */ - "\"\xED\xA0\x80\xED\xB0\x80\"", + "\xED\xA0\x80\xED\xB0\x80", "\xED\xA0\x80\xED\xB0\x80", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, { /* \U+D800\U+DFFF */ - "\"\xED\xA0\x80\xED\xBF\xBF\"", + "\xED\xA0\x80\xED\xBF\xBF", "\xED\xA0\x80\xED\xBF\xBF", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, { /* \U+DB7F\U+DC00 */ - "\"\xED\xAD\xBF\xED\xB0\x80\"", + "\xED\xAD\xBF\xED\xB0\x80", "\xED\xAD\xBF\xED\xB0\x80", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, { /* \U+DB7F\U+DFFF */ - "\"\xED\xAD\xBF\xED\xBF\xBF\"", + "\xED\xAD\xBF\xED\xBF\xBF", "\xED\xAD\xBF\xED\xBF\xBF", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, { /* \U+DB80\U+DC00 */ - "\"\xED\xAE\x80\xED\xB0\x80\"", + "\xED\xAE\x80\xED\xB0\x80", "\xED\xAE\x80\xED\xB0\x80", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, { /* \U+DB80\U+DFFF */ - "\"\xED\xAE\x80\xED\xBF\xBF\"", + "\xED\xAE\x80\xED\xBF\xBF", "\xED\xAE\x80\xED\xBF\xBF", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, { /* \U+DBFF\U+DC00 */ - "\"\xED\xAF\xBF\xED\xB0\x80\"", + "\xED\xAF\xBF\xED\xB0\x80", "\xED\xAF\xBF\xED\xB0\x80", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, { /* \U+DBFF\U+DFFF */ - "\"\xED\xAF\xBF\xED\xBF\xBF\"", + "\xED\xAF\xBF\xED\xBF\xBF", "\xED\xAF\xBF\xED\xBF\xBF", /* bug: not corrected */ - "\"\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD", }, /* 5.3 Other illegal code positions */ /* BMP noncharacters */ { /* \U+FFFE */ - "\"\xEF\xBF\xBE\"", + "\xEF\xBF\xBE", "\xEF\xBF\xBE", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* \U+FFFF */ - "\"\xEF\xBF\xBF\"", + "\xEF\xBF\xBF", "\xEF\xBF\xBF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* U+FDD0 */ - "\"\xEF\xB7\x90\"", + "\xEF\xB7\x90", "\xEF\xB7\x90", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, { /* U+FDEF */ - "\"\xEF\xB7\xAF\"", + "\xEF\xB7\xAF", "\xEF\xB7\xAF", /* bug: not corrected */ - "\"\\uFFFD\"", + "\\uFFFD", }, /* Plane 1 .. 16 noncharacters */ { /* U+1FFFE U+1FFFF U+2FFFE U+2FFFF ... U+10FFFE U+10FFFF */ - "\"\xF0\x9F\xBF\xBE\xF0\x9F\xBF\xBF" + "\xF0\x9F\xBF\xBE\xF0\x9F\xBF\xBF" "\xF0\xAF\xBF\xBE\xF0\xAF\xBF\xBF" "\xF0\xBF\xBF\xBE\xF0\xBF\xBF\xBF" "\xF1\x8F\xBF\xBE\xF1\x8F\xBF\xBF" @@ -796,7 +800,7 @@ static void utf8_string(void) "\xF3\x9F\xBF\xBE\xF3\x9F\xBF\xBF" "\xF3\xAF\xBF\xBE\xF3\xAF\xBF\xBF" "\xF3\xBF\xBF\xBE\xF3\xBF\xBF\xBF" - "\xF4\x8F\xBF\xBE\xF4\x8F\xBF\xBF\"", + "\xF4\x8F\xBF\xBE\xF4\x8F\xBF\xBF", /* bug: not corrected */ "\xF0\x9F\xBF\xBE\xF0\x9F\xBF\xBF" "\xF0\xAF\xBF\xBE\xF0\xAF\xBF\xBF" @@ -814,55 +818,52 @@ static void utf8_string(void) "\xF3\xAF\xBF\xBE\xF3\xAF\xBF\xBF" "\xF3\xBF\xBF\xBE\xF3\xBF\xBF\xBF" "\xF4\x8F\xBF\xBE\xF4\x8F\xBF\xBF", - "\"\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" - "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\"", + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, {} }; - int i; - QObject *obj; + int i, j; QString *str; const char *json_in, *utf8_out, *utf8_in, *json_out; + char *jstr; for (i = 0; test_cases[i].json_in; i++) { - json_in = test_cases[i].json_in; - utf8_out = test_cases[i].utf8_out; - utf8_in = test_cases[i].utf8_in ?: test_cases[i].utf8_out; - json_out = test_cases[i].json_out ?: test_cases[i].json_in; + for (j = 0; j < 2; j++) { + json_in = test_cases[i].json_in; + utf8_out = test_cases[i].utf8_out; + utf8_in = test_cases[i].utf8_in ?: test_cases[i].utf8_out; + json_out = test_cases[i].json_out ?: test_cases[i].json_in; - obj = qobject_from_json(json_in, utf8_out ? &error_abort : NULL); - if (utf8_out) { - str = qobject_to(QString, obj); - g_assert(str); - g_assert_cmpstr(qstring_get_str(str), ==, utf8_out); - } else { - g_assert(!obj); - } - qobject_unref(obj); + /* Parse @json_in, expect @utf8_out */ + if (utf8_out) { + str = from_json_str(json_in, &error_abort, j); + g_assert_cmpstr(qstring_get_try_str(str), ==, utf8_out); + qobject_unref(str); + } else { + str = from_json_str(json_in, NULL, j); + g_assert(!str); + } - obj = QOBJECT(qstring_from_str(utf8_in)); - str = qobject_to_json(obj); - if (json_out) { - g_assert(str); - g_assert_cmpstr(qstring_get_str(str), ==, json_out); - } else { - g_assert(!str); - } - qobject_unref(str); - qobject_unref(obj); + /* Unparse @utf8_in, expect @json_out */ + str = qstring_from_str(utf8_in); + jstr = to_json_str(str); + g_assert_cmpstr(jstr, ==, json_out); + qobject_unref(str); + g_free(jstr); - /* - * Disabled, because qobject_from_json() is buggy, and I can't - * be bothered to add the expected incorrect results. - * FIXME Enable once these bugs have been fixed. - */ - if (0 && json_out != json_in) { - obj = qobject_from_json(json_out, &error_abort); - str = qobject_to(QString, obj); - g_assert(str); - g_assert_cmpstr(qstring_get_str(str), ==, utf8_out); + /* + * Parse @json_out right back + * Disabled, because qobject_from_json() is buggy, and I can't + * be bothered to add the expected incorrect results. + * FIXME Enable once these bugs have been fixed. + */ + if (0 && json_out != json_in) { + str = from_json_str(json_out, &error_abort, j); + g_assert_cmpstr(qstring_get_try_str(str), ==, utf8_out); + } } } } From patchwork Fri Aug 17 15:05:11 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958974 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSNC564Bz9sC2 for ; Sat, 18 Aug 2018 01:50:50 +1000 (AEST) Received: from localhost ([::1]:34877 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh1U-000487-Dd for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:50:48 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46261) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKI-00035h-0C for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKD-0001iZ-KG for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:09 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57082 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKC-0001gy-Ve for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:05 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6BD44C12A7; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 24D8910D18F1; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 126FE110E7D0; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:11 +0200 Message-Id: <20180817150559.16243-13-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 12/60] check-qjson: Simplify utf8_string() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The previous commit made utf8_string()'s test_cases[].utf8_in superfluous: we can use .json_in instead. Except for the case testing U+0000. \x00 doesn't work in C strings, so it tests \\u0000 instead. But testing \\uXXXX is escaped_string()'s job. It's covered there. Test U+0001 here, and drop .utf8_in. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 53 ++++++++------------------------------------- 1 file changed, 9 insertions(+), 44 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 6a2bfd0f3e..dd87a4962f 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -181,8 +181,6 @@ static void utf8_string(void) const char *utf8_out; /* Expected unparse output, defaults to @json_in */ const char *json_out; - /* Expected parse output for @json_out, defaults to @utf8_out */ - const char *utf8_in; } test_cases[] = { /* * Bug markers used here: @@ -191,10 +189,6 @@ static void utf8_string(void) * - bug: rejected * JSON parser rejects invalid sequence(s) * We may choose to define this as feature - * - bug: want "..." - * JSON parser produces incorrect result, this is the - * correct one, assuming replacement character U+FFFF - * We may choose to reject instead of replace */ /* 1 Some correct UTF-8 text */ @@ -215,12 +209,15 @@ static void utf8_string(void) }, /* 2 Boundary condition test cases */ /* 2.1 First possible sequence of a certain length */ - /* 2.1.1 1 byte U+0000 */ + /* + * 2.1.1 1 byte U+0001 + * \x00 is impossible, test \x01 instead. Other + * representations of U+0000 are covered under 4.3. + */ { - "\\u0000", - "", /* bug: want overlong "\xC0\x80" */ - "\\u0000", - "\xC0\x80", + "\x01", + "\x01", + "\\u0001", }, /* 2.1.2 2 bytes U+0080 */ { @@ -245,14 +242,12 @@ static void utf8_string(void) "\xF8\x88\x80\x80\x80", NULL, /* bug: rejected */ "\\uFFFD", - "\xF8\x88\x80\x80\x80", }, /* 2.1.6 6 bytes U+4000000 */ { "\xFC\x84\x80\x80\x80\x80", NULL, /* bug: rejected */ "\\uFFFD", - "\xFC\x84\x80\x80\x80\x80", }, /* 2.2 Last possible sequence of a certain length */ /* 2.2.1 1 byte U+007F */ @@ -286,21 +281,18 @@ static void utf8_string(void) "\xF7\xBF\xBF\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xF7\xBF\xBF\xBF", }, /* 2.2.5 5 bytes U+3FFFFFF */ { "\xFB\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xFB\xBF\xBF\xBF\xBF", }, /* 2.2.6 6 bytes U+7FFFFFFF */ { "\xFD\xBF\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xFD\xBF\xBF\xBF\xBF\xBF", }, /* 2.3 Other boundary conditions */ { @@ -423,10 +415,6 @@ static void utf8_string(void) "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", - "\xC0 \xC1 \xC2 \xC3 \xC4 \xC5 \xC6 \xC7 " - "\xC8 \xC9 \xCA \xCB \xCC \xCD \xCE \xCF " - "\xD0 \xD1 \xD2 \xD3 \xD4 \xD5 \xD6 \xD7 " - "\xD8 \xD9 \xDA \xDB \xDC \xDD \xDE \xDF ", }, /* 3.2.2 All 16 first bytes of 3-byte sequences, followed by space */ { @@ -443,21 +431,18 @@ static void utf8_string(void) "\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ", NULL, /* bug: rejected */ "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", - "\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ", }, /* 3.2.4 All 4 first bytes of 5-byte sequences, followed by space */ { "\xF8 \xF9 \xFA \xFB ", NULL, /* bug: rejected */ "\\uFFFD \\uFFFD \\uFFFD \\uFFFD ", - "\xF8 \xF9 \xFA \xFB ", }, /* 3.2.5 All 2 first bytes of 6-byte sequences, followed by space */ { "\xFC \xFD ", NULL, /* bug: rejected */ "\\uFFFD \\uFFFD ", - "\xFC \xFD ", }, /* 3.3 Sequences with last continuation byte missing */ /* 3.3.1 2-byte sequence with last byte missing (U+0000) */ @@ -465,7 +450,6 @@ static void utf8_string(void) "\xC0", NULL, /* bug: rejected */ "\\uFFFD", - "\xC0", }, /* 3.3.2 3-byte sequence with last byte missing (U+0000) */ { @@ -484,14 +468,12 @@ static void utf8_string(void) "\xF8\x80\x80\x80", NULL, /* bug: rejected */ "\\uFFFD", - "\xF8\x80\x80\x80", }, /* 3.3.5 6-byte sequence with last byte missing (U+0000) */ { "\xFC\x80\x80\x80\x80", NULL, /* bug: rejected */ "\\uFFFD", - "\xFC\x80\x80\x80\x80", }, /* 3.3.6 2-byte sequence with last byte missing (U+07FF) */ { @@ -510,21 +492,18 @@ static void utf8_string(void) "\xF7\xBF\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xF7\xBF\xBF", }, /* 3.3.9 5-byte sequence with last byte missing (U+3FFFFFF) */ { "\xFB\xBF\xBF\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xFB\xBF\xBF\xBF", }, /* 3.3.10 6-byte sequence with last byte missing (U+7FFFFFFF) */ { "\xFD\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xFD\xBF\xBF\xBF\xBF", }, /* 3.4 Concatenation of incomplete sequences */ { @@ -533,27 +512,22 @@ static void utf8_string(void) NULL, /* bug: rejected */ "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", - "\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80" - "\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF", }, /* 3.5 Impossible bytes */ { "\xFE", NULL, /* bug: rejected */ "\\uFFFD", - "\xFE", }, { "\xFF", NULL, /* bug: rejected */ "\\uFFFD", - "\xFF", }, { "\xFE\xFE\xFF\xFF", NULL, /* bug: rejected */ "\\uFFFD\\uFFFD\\uFFFD\\uFFFD", - "\xFE\xFE\xFF\xFF", }, /* 4 Overlong sequences */ /* 4.1 Overlong '/' */ @@ -561,7 +535,6 @@ static void utf8_string(void) "\xC0\xAF", NULL, /* bug: rejected */ "\\uFFFD", - "\xC0\xAF", }, { "\xE0\x80\xAF", @@ -577,13 +550,11 @@ static void utf8_string(void) "\xF8\x80\x80\x80\xAF", NULL, /* bug: rejected */ "\\uFFFD", - "\xF8\x80\x80\x80\xAF", }, { "\xFC\x80\x80\x80\x80\xAF", NULL, /* bug: rejected */ "\\uFFFD", - "\xFC\x80\x80\x80\x80\xAF", }, /* * 4.2 Maximum overlong sequences @@ -596,7 +567,6 @@ static void utf8_string(void) "\xC1\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xC1\xBF", }, { /* \U+07FF */ @@ -620,14 +590,12 @@ static void utf8_string(void) "\xF8\x87\xBF\xBF\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xF8\x87\xBF\xBF\xBF", }, { /* \U+3FFFFFF */ "\xFC\x83\xBF\xBF\xBF\xBF", NULL, /* bug: rejected */ "\\uFFFD", - "\xFC\x83\xBF\xBF\xBF\xBF", }, /* 4.3 Overlong representation of the NUL character */ { @@ -635,7 +603,6 @@ static void utf8_string(void) "\xC0\x80", NULL, /* bug: rejected */ "\\u0000", - "\xC0\x80", }, { /* \U+0000 */ @@ -654,14 +621,12 @@ static void utf8_string(void) "\xF8\x80\x80\x80\x80", NULL, /* bug: rejected */ "\\uFFFD", - "\xF8\x80\x80\x80\x80", }, { /* \U+0000 */ "\xFC\x80\x80\x80\x80\x80", NULL, /* bug: rejected */ "\\uFFFD", - "\xFC\x80\x80\x80\x80\x80", }, /* 5 Illegal code positions */ /* 5.1 Single UTF-16 surrogates */ @@ -834,7 +799,7 @@ static void utf8_string(void) for (j = 0; j < 2; j++) { json_in = test_cases[i].json_in; utf8_out = test_cases[i].utf8_out; - utf8_in = test_cases[i].utf8_in ?: test_cases[i].utf8_out; + utf8_in = test_cases[i].utf8_out ?: test_cases[i].json_in; json_out = test_cases[i].json_out ?: test_cases[i].json_in; /* Parse @json_in, expect @utf8_out */ From patchwork Fri Aug 17 15:05:12 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958950 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRx75jCYz9sC7 for ; Sat, 18 Aug 2018 01:30:51 +1000 (AEST) Received: from localhost ([::1]:34765 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgi9-0006ru-Dd for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:30:49 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46230) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKH-00034o-0D for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKD-0001iu-OW for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46128 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKD-0001h7-26 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:05 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8DAA440776EF; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 474232026D74; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 15DB5110E7F9; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:12 +0200 Message-Id: <20180817150559.16243-14-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 13/60] check-qjson: Fix utf8_string() to test all invalid sequences X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Some of utf8_string()'s test_cases[] contain multiple invalid sequences. Testing that qobject_from_json() fails only tests we reject at least one invalid sequence. That's incomplete. Additionally test each non-space sequence in isolation. This demonstrates that the JSON parser accepts invalid sequences starting with \xC2..\xF4. Add a FIXME comment. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 33 ++++++++++++++++++++++++++++----- 1 file changed, 28 insertions(+), 5 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index dd87a4962f..e81fbb95a3 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -20,6 +20,7 @@ #include "qapi/qmp/qnull.h" #include "qapi/qmp/qnum.h" #include "qapi/qmp/qstring.h" +#include "qemu/unicode.h" #include "qemu-common.h" static QString *from_json_str(const char *jstr, Error **errp, bool single) @@ -410,7 +411,7 @@ static void utf8_string(void) "\xC8 \xC9 \xCA \xCB \xCC \xCD \xCE \xCF " "\xD0 \xD1 \xD2 \xD3 \xD4 \xD5 \xD6 \xD7 " "\xD8 \xD9 \xDA \xDB \xDC \xDD \xDE \xDF ", - NULL, /* bug: rejected */ + NULL, /* bug: rejected (partly, see FIXME below) */ "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " @@ -429,7 +430,7 @@ static void utf8_string(void) /* 3.2.3 All 8 first bytes of 4-byte sequences, followed by space */ { "\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ", - NULL, /* bug: rejected */ + NULL, /* bug: rejected (partly, see FIXME below) */ "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", }, /* 3.2.4 All 4 first bytes of 5-byte sequences, followed by space */ @@ -509,7 +510,7 @@ static void utf8_string(void) { "\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80" "\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF", - NULL, /* bug: rejected */ + NULL, /* bug: rejected (partly, see FIXME below) */ "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, @@ -792,8 +793,8 @@ static void utf8_string(void) }; int i, j; QString *str; - const char *json_in, *utf8_out, *utf8_in, *json_out; - char *jstr; + const char *json_in, *utf8_out, *utf8_in, *json_out, *tail; + char *end, *in, *jstr; for (i = 0; test_cases[i].json_in; i++) { for (j = 0; j < 2; j++) { @@ -810,6 +811,28 @@ static void utf8_string(void) } else { str = from_json_str(json_in, NULL, j); g_assert(!str); + /* + * Failure may be due to any sequence, but *all* sequences + * are expected to fail. Test each one in isolation. + */ + for (tail = json_in; *tail; tail = end) { + mod_utf8_codepoint(tail, 6, &end); + if (*end == ' ') { + end++; + } + in = strndup(tail, end - tail); + str = from_json_str(in, NULL, j); + /* + * FIXME JSON parser accepts invalid sequence + * starting with \xC2..\xF4 + */ + if (*in >= '\xC2' && *in <= '\xF4') { + g_free(str); + str = NULL; + } + g_assert(!str); + g_free(in); + } } /* Unparse @utf8_in, expect @json_out */ From patchwork Fri Aug 17 15:05:13 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958966 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSCp2C4kz9s4Z for ; Sat, 18 Aug 2018 01:43:34 +1000 (AEST) Received: from localhost ([::1]:34832 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqguR-0004nq-Ri for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:43:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46199) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00034B-7v for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKE-0001jW-2H for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56216 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKD-0001h5-3O for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:05 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8C14E5A756; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4827A16874; Fri, 17 Aug 2018 15:06:04 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 1951F110E7FA; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:13 +0200 Message-Id: <20180817150559.16243-15-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:04 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 14/60] check-qjson qmp-test: Cover control characters more thoroughly X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" RFC 7159 requires control characters in strings to be escaped. Demonstrate the JSON parser accepts U+0001 .. U+001F unescaped. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 36 ++++++++++++++++++++++++++++++------ tests/qmp-test.c | 14 ++++++++++++++ 2 files changed, 44 insertions(+), 6 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index e81fbb95a3..1581fbf170 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -192,6 +192,26 @@ static void utf8_string(void) * We may choose to define this as feature */ + /* 0 Control characters */ + { + /* + * Note: \x00 is impossible, other representations of + * U+0000 are covered under 4.3 + */ + "\x01\x02\x03\x04\x05\x06\x07" + "\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F" + "\x10\x11\x12\x13\x14\x15\x16\x17" + "\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F", + /* bug: not corrected (valid UTF-8, but invalid JSON) */ + "\x01\x02\x03\x04\x05\x06\x07" + "\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F" + "\x10\x11\x12\x13\x14\x15\x16\x17" + "\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F", + "\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007" + "\\b\\t\\n\\u000B\\f\\r\\u000E\\u000F" + "\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017" + "\\u0018\\u0019\\u001A\\u001B\\u001C\\u001D\\u001E\\u001F", + }, /* 1 Some correct UTF-8 text */ { /* a bit of German */ @@ -211,14 +231,14 @@ static void utf8_string(void) /* 2 Boundary condition test cases */ /* 2.1 First possible sequence of a certain length */ /* - * 2.1.1 1 byte U+0001 - * \x00 is impossible, test \x01 instead. Other - * representations of U+0000 are covered under 4.3. + * 2.1.1 1 byte U+0020 + * Control characters are already covered by their own test + * case under 0. Test the first 1 byte non-control character + * here. */ { - "\x01", - "\x01", - "\\u0001", + " ", + " ", }, /* 2.1.2 2 bytes U+0080 */ { @@ -1333,6 +1353,10 @@ static void junk_input(void) g_assert(!err); /* BUG */ g_assert(obj == NULL); + obj = qobject_from_json("{\x01", &err); + g_assert(!err); /* BUG */ + g_assert(obj == NULL); + obj = qobject_from_json("[0\xFF]", &err); error_free_or_abort(&err); g_assert(obj == NULL); diff --git a/tests/qmp-test.c b/tests/qmp-test.c index 17153192fe..5edc97f63f 100644 --- a/tests/qmp-test.c +++ b/tests/qmp-test.c @@ -71,6 +71,13 @@ static void test_malformed(QTestState *qts) qobject_unref(resp); g_assert(recovered(qts)); + /* lexical error: funny control character outside string */ + qtest_qmp_send_raw(qts, "{\x01"); + resp = qtest_qmp_receive(qts); + g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); + qobject_unref(resp); + g_assert(recovered(qts)); + /* lexical error: impossible byte in string */ qtest_qmp_send_raw(qts, "{'bad \xFF"); resp = qtest_qmp_receive(qts); @@ -78,6 +85,13 @@ static void test_malformed(QTestState *qts) qobject_unref(resp); g_assert(recovered(qts)); + /* lexical error: control character in string */ + qtest_qmp_send_raw(qts, "{'execute': 'nonexistent', 'id':'\n'}"); + resp = qtest_qmp_receive(qts); + g_assert_cmpstr(get_error_class(resp), ==, "CommandNotFound"); /* BUG */ + qobject_unref(resp); + g_assert(recovered(qts)); + /* lexical error: interpolation */ qtest_qmp_send_raw(qts, "%%p\n"); resp = qtest_qmp_receive(qts); From patchwork Fri Aug 17 15:05:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958949 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRtG3Dj1z9sBj for ; Sat, 18 Aug 2018 01:28:22 +1000 (AEST) Received: from localhost ([::1]:34754 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgfj-000432-Vl for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:28:20 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46313) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKJ-00036x-BB for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001lb-9d for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:10 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56228 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001iA-IL for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4B41826379; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 03A7E2156712; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 1CC0D110E7FD; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:14 +0200 Message-Id: <20180817150559.16243-16-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 15/60] check-qjson: Cover interpolation more thoroughly X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 166 +++++++++++++++++++++++++++----------------- 1 file changed, 102 insertions(+), 64 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 1581fbf170..4fb43e4d5d 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -876,30 +876,6 @@ static void utf8_string(void) } } -static void vararg_string(void) -{ - int i; - struct { - const char *decoded; - } test_cases[] = { - { "hello world" }, - { "the quick brown fox jumped over the fence" }, - {} - }; - - for (i = 0; test_cases[i].decoded; i++) { - QString *str; - - str = qobject_to(QString, - qobject_from_jsonf_nofail("%s", - test_cases[i].decoded)); - g_assert(str); - g_assert(strcmp(qstring_get_str(str), test_cases[i].decoded) == 0); - - qobject_unref(str); - } -} - static void simple_number(void) { int i; @@ -1017,29 +993,6 @@ static void float_number(void) } } -static void vararg_number(void) -{ - QNum *qnum; - int value = 0x2342; - long long value_ll = 0x2342342343LL; - double valuef = 2.323423423; - int64_t val; - - qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%d", value)); - g_assert(qnum_get_try_int(qnum, &val)); - g_assert_cmpint(val, ==, value); - qobject_unref(qnum); - - qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%lld", value_ll)); - g_assert(qnum_get_try_int(qnum, &val)); - g_assert_cmpint(val, ==, value_ll); - qobject_unref(qnum); - - qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%f", valuef)); - g_assert(qnum_get_double(qnum) == valuef); - qobject_unref(qnum); -} - static void keyword_literal(void) { QObject *obj; @@ -1069,17 +1022,6 @@ static void keyword_literal(void) qobject_unref(qbool); - qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", false)); - g_assert(qbool); - g_assert(qbool_get_bool(qbool) == false); - qobject_unref(qbool); - - /* Test that non-zero values other than 1 get collapsed to true */ - qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", 2)); - g_assert(qbool); - g_assert(qbool_get_bool(qbool) == true); - qobject_unref(qbool); - obj = qobject_from_json("null", &error_abort); g_assert(obj != NULL); g_assert(qobject_type(obj) == QTYPE_QNULL); @@ -1091,6 +1033,101 @@ static void keyword_literal(void) qobject_unref(null); } +static void interpolation_valid(void) +{ + long long value_lld = 0x123456789abcdefLL; + long value_ld = (long)value_lld; + int value_d = (int)value_lld; + unsigned long long value_llu = 0xfedcba9876543210ULL; + unsigned long value_lu = (unsigned long)value_llu; + unsigned value_u = (unsigned)value_llu; + double value_f = 2.323423423; + const char *value_s = "hello world"; + QObject *value_p = QOBJECT(qnull()); + QBool *qbool; + QNum *qnum; + QString *qstr; + QObject *qobj; + + /* bool */ + + qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", false)); + g_assert(qbool); + g_assert(qbool_get_bool(qbool) == false); + qobject_unref(qbool); + + /* Test that non-zero values other than 1 get collapsed to true */ + qbool = qobject_to(QBool, qobject_from_jsonf_nofail("%i", 2)); + g_assert(qbool); + g_assert(qbool_get_bool(qbool) == true); + qobject_unref(qbool); + + /* number */ + + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%d", value_d)); + g_assert_cmpint(qnum_get_int(qnum), ==, value_d); + qobject_unref(qnum); + + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%ld", value_ld)); + g_assert_cmpint(qnum_get_int(qnum), ==, value_ld); + qobject_unref(qnum); + + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%lld", value_lld)); + g_assert_cmpint(qnum_get_int(qnum), ==, value_lld); + qobject_unref(qnum); + + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%u", value_u)); + g_assert_cmpuint(qnum_get_uint(qnum), ==, value_u); + qobject_unref(qnum); + + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%lu", value_lu)); + g_assert_cmpuint(qnum_get_uint(qnum), ==, value_lu); + qobject_unref(qnum); + + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%llu", value_llu)); + g_assert_cmpuint(qnum_get_uint(qnum), ==, value_llu); + qobject_unref(qnum); + + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%f", value_f)); + g_assert(qnum_get_double(qnum) == value_f); + qobject_unref(qnum); + + /* string */ + + qstr = qobject_to(QString, + qobject_from_jsonf_nofail("%s", value_s)); + g_assert_cmpstr(qstring_get_try_str(qstr), ==, value_s); + qobject_unref(qstr); + + /* object */ + + qobj = qobject_from_jsonf_nofail("%p", value_p); + g_assert(qobj == value_p); +} + +static void interpolation_unknown(void) +{ + if (g_test_subprocess()) { + qobject_from_jsonf_nofail("%x", 666); + } + g_test_trap_subprocess(NULL, 0, 0); + g_test_trap_assert_failed(); +} + +static void interpolation_string(void) +{ + QLitObject decoded = QLIT_QLIST(((QLitObject[]){ + QLIT_QSTR("%s"), + QLIT_QSTR("eins"), + {}})); + QObject *qobj; + + /* Dangerous misfeature: % is silently ignored in strings */ + qobj = qobject_from_jsonf_nofail("['%s', %s]", "eins", "zwei"); + g_assert(qlit_equal_qobject(&decoded, qobj)); + qobject_unref(qobj); +} + static void simple_dict(void) { int i; @@ -1309,7 +1346,7 @@ static void simple_whitespace(void) } } -static void simple_varargs(void) +static void simple_interpolation(void) { QObject *embedded_obj; QObject *obj; @@ -1506,22 +1543,23 @@ int main(int argc, char **argv) g_test_add_func("/literals/string/escaped", escaped_string); g_test_add_func("/literals/string/quotes", string_with_quotes); g_test_add_func("/literals/string/utf8", utf8_string); - g_test_add_func("/literals/string/vararg", vararg_string); g_test_add_func("/literals/number/simple", simple_number); g_test_add_func("/literals/number/large", large_number); g_test_add_func("/literals/number/float", float_number); - g_test_add_func("/literals/number/vararg", vararg_number); g_test_add_func("/literals/keyword", keyword_literal); + g_test_add_func("/literals/interpolation/valid", interpolation_valid); + g_test_add_func("/literals/interpolation/unkown", interpolation_unknown); + g_test_add_func("/literals/interpolation/string", interpolation_string); + g_test_add_func("/dicts/simple_dict", simple_dict); g_test_add_func("/dicts/large_dict", large_dict); g_test_add_func("/lists/simple_list", simple_list); - g_test_add_func("/whitespace/simple_whitespace", simple_whitespace); - - g_test_add_func("/varargs/simple_varargs", simple_varargs); + g_test_add_func("/mixed/simple_whitespace", simple_whitespace); + g_test_add_func("/mixed/interpolation", simple_interpolation); g_test_add_func("/errors/empty", empty_input); g_test_add_func("/errors/blank", blank_input); From patchwork Fri Aug 17 15:05:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958972 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSJg2r8Vz9sC2 for ; Sat, 18 Aug 2018 01:47:47 +1000 (AEST) Received: from localhost ([::1]:34861 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgyW-0000Fk-Oh for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:47:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46221) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00034Z-NP for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKE-0001kQ-JL for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46134 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKD-0001i1-RG for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 318FA40241CB; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0736A2156714; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 2026E110E7FE; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:15 +0200 Message-Id: <20180817150559.16243-17-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 16/60] json: Fix lexer to include the bad character in JSON_ERROR token X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" json_lexer[] maps (lexer state, input character) to the new lexer state. The input character is consumed unless the new state is terminal and the input character doesn't belong to this token, i.e. the state transition uses look-ahead. When this is the case, input character '\0' would result in the same state transition. TERMINAL_NEEDED_LOOKAHEAD() exploits this. Except this is wrong for transitions to IN_ERROR. There, the offending input character is in fact consumed: case IN_ERROR returns. It isn't added to the JSON_ERROR token, though. Fix that by making TERMINAL_NEEDED_LOOKAHEAD() return false for transitions to IN_ERROR. There's a slight complication. json_lexer_flush() passes input character '\0' to flush an incomplete token. If this results in JSON_ERROR, we'd now add the '\0' to the token. Suppress that. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 980ba159d6..7c0875d225 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -76,7 +76,7 @@ QEMU_BUILD_BUG_ON((int)JSON_MIN <= (int)IN_START); from OLD_STATE required lookahead. This happens whenever the table below uses the TERMINAL macro. */ #define TERMINAL_NEEDED_LOOKAHEAD(old_state, terminal) \ - (json_lexer[(old_state)][0] == (terminal)) + (terminal != IN_ERROR && json_lexer[(old_state)][0] == (terminal)) static const uint8_t json_lexer[][256] = { /* Relies on default initialization to IN_ERROR! */ @@ -304,7 +304,7 @@ static int json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) assert(lexer->state <= ARRAY_SIZE(json_lexer)); new_state = json_lexer[lexer->state][(uint8_t)ch]; char_consumed = !TERMINAL_NEEDED_LOOKAHEAD(lexer->state, new_state); - if (char_consumed) { + if (char_consumed && !flush) { g_string_append_c(lexer->token, ch); } From patchwork Fri Aug 17 15:05:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958948 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRsl11F2z9sBj for ; Sat, 18 Aug 2018 01:27:55 +1000 (AEST) Received: from localhost ([::1]:34751 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgfI-0003h6-Nw for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:27:52 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46227) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKG-00034f-RP for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKE-0001kc-Ku for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56222 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKD-0001hz-V0 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2BC1F5A26B; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 043787C2E; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 239D2110E651; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:16 +0200 Message-Id: <20180817150559.16243-18-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 17/60] json: Reject unescaped control characters X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Fix the lexer to reject unescaped control characters in JSON strings, in accordance with RFC 7159. Bonus: we now recover more nicely from unclosed strings. E.g. {"one: 1}\n{"two": 2} now recovers cleanly after the newline, where before the lexer remained confused until the next unpaired double quote or lexical error. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 4 ++-- tests/check-qjson.c | 6 +----- tests/qmp-test.c | 4 ++-- 3 files changed, 5 insertions(+), 9 deletions(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 7c0875d225..e85e9a78ff 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -115,7 +115,7 @@ static const uint8_t json_lexer[][256] = { ['u'] = IN_DQ_UCODE0, }, [IN_DQ_STRING] = { - [1 ... 0xBF] = IN_DQ_STRING, + [0x20 ... 0xBF] = IN_DQ_STRING, [0xC2 ... 0xF4] = IN_DQ_STRING, ['\\'] = IN_DQ_STRING_ESCAPE, ['"'] = JSON_STRING, @@ -155,7 +155,7 @@ static const uint8_t json_lexer[][256] = { ['u'] = IN_SQ_UCODE0, }, [IN_SQ_STRING] = { - [1 ... 0xBF] = IN_SQ_STRING, + [0x20 ... 0xBF] = IN_SQ_STRING, [0xC2 ... 0xF4] = IN_SQ_STRING, ['\\'] = IN_SQ_STRING_ESCAPE, ['\''] = JSON_STRING, diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 4fb43e4d5d..dd6bb76ec5 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -202,11 +202,7 @@ static void utf8_string(void) "\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F" "\x10\x11\x12\x13\x14\x15\x16\x17" "\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F", - /* bug: not corrected (valid UTF-8, but invalid JSON) */ - "\x01\x02\x03\x04\x05\x06\x07" - "\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F" - "\x10\x11\x12\x13\x14\x15\x16\x17" - "\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F", + NULL, "\\u0001\\u0002\\u0003\\u0004\\u0005\\u0006\\u0007" "\\b\\t\\n\\u000B\\f\\r\\u000E\\u000F" "\\u0010\\u0011\\u0012\\u0013\\u0014\\u0015\\u0016\\u0017" diff --git a/tests/qmp-test.c b/tests/qmp-test.c index 5edc97f63f..7b3ba17c4a 100644 --- a/tests/qmp-test.c +++ b/tests/qmp-test.c @@ -86,9 +86,9 @@ static void test_malformed(QTestState *qts) g_assert(recovered(qts)); /* lexical error: control character in string */ - qtest_qmp_send_raw(qts, "{'execute': 'nonexistent', 'id':'\n'}"); + qtest_qmp_send_raw(qts, "{'execute': 'nonexistent', 'id':'\n"); resp = qtest_qmp_receive(qts); - g_assert_cmpstr(get_error_class(resp), ==, "CommandNotFound"); /* BUG */ + g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); qobject_unref(resp); g_assert(recovered(qts)); From patchwork Fri Aug 17 15:05:17 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958936 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRbk2j69z9sC7 for ; Sat, 18 Aug 2018 01:15:46 +1000 (AEST) Received: from localhost ([::1]:34675 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgTX-0006ap-TN for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:15:43 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46306) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKI-00036T-TJ for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001lG-32 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:10 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46438 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001i8-B7 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 49EE58011454; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0651510D18E0; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 270D3110E655; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:17 +0200 Message-Id: <20180817150559.16243-19-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 18/60] json: Revamp lexer documentation X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 80 +++++++++++++++++++++++++++++++++++++++----- 1 file changed, 71 insertions(+), 9 deletions(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index e85e9a78ff..109a7d8bb8 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -18,21 +18,83 @@ #define MAX_TOKEN_SIZE (64ULL << 20) /* - * Required by JSON (RFC 7159): + * From RFC 7159 "The JavaScript Object Notation (JSON) Data + * Interchange Format", with [comments in brackets]: * - * \"([^\\\"]|\\[\"'\\/bfnrt]|\\u[0-9a-fA-F]{4})*\" - * -?(0|[1-9][0-9]*)(.[0-9]+)?([eE][-+]?[0-9]+)? - * [{}\[\],:] - * [a-z]+ # covers null, true, false + * The set of tokens includes six structural characters, strings, + * numbers, and three literal names. * - * Extension of '' strings: + * These are the six structural characters: * - * '([^\\']|\\[\"'\\/bfnrt]|\\u[0-9a-fA-F]{4})*' + * begin-array = ws %x5B ws ; [ left square bracket + * begin-object = ws %x7B ws ; { left curly bracket + * end-array = ws %x5D ws ; ] right square bracket + * end-object = ws %x7D ws ; } right curly bracket + * name-separator = ws %x3A ws ; : colon + * value-separator = ws %x2C ws ; , comma * - * Extension for vararg handling in JSON construction: + * Insignificant whitespace is allowed before or after any of the six + * structural characters. + * [This lexer accepts it before or after any token, which is actually + * the same, as the grammar always has structural characters between + * other tokens.] * - * %((l|ll|I64)?d|[ipsf]) + * ws = *( + * %x20 / ; Space + * %x09 / ; Horizontal tab + * %x0A / ; Line feed or New line + * %x0D ) ; Carriage return * + * [...] three literal names: + * false null true + * [This lexer accepts [a-z]+, and leaves rejecting unknown literal + * names to the parser.] + * + * [Numbers:] + * + * number = [ minus ] int [ frac ] [ exp ] + * decimal-point = %x2E ; . + * digit1-9 = %x31-39 ; 1-9 + * e = %x65 / %x45 ; e E + * exp = e [ minus / plus ] 1*DIGIT + * frac = decimal-point 1*DIGIT + * int = zero / ( digit1-9 *DIGIT ) + * minus = %x2D ; - + * plus = %x2B ; + + * zero = %x30 ; 0 + * + * [Strings:] + * string = quotation-mark *char quotation-mark + * + * char = unescaped / + * escape ( + * %x22 / ; " quotation mark U+0022 + * %x5C / ; \ reverse solidus U+005C + * %x2F / ; / solidus U+002F + * %x62 / ; b backspace U+0008 + * %x66 / ; f form feed U+000C + * %x6E / ; n line feed U+000A + * %x72 / ; r carriage return U+000D + * %x74 / ; t tab U+0009 + * %x75 4HEXDIG ) ; uXXXX U+XXXX + * escape = %x5C ; \ + * quotation-mark = %x22 ; " + * unescaped = %x20-21 / %x23-5B / %x5D-10FFFF + * + * + * Extensions over RFC 7159: + * - Extra escape sequence in strings: + * 0x27 (apostrophe) is recognized after escape, too + * - Single-quoted strings: + * Like double-quoted strings, except they're delimited by %x27 + * (apostrophe) instead of %x22 (quotation mark), and can't contain + * unescaped apostrophe, but can contain unescaped quotation mark. + * - Interpolation: + * interpolation = %((l|ll|I64)[du]|[ipsf]) + * + * Note: + * - Input must be encoded in UTF-8. + * - Decoding and validating is left to the parser. */ enum json_lexer_state { From patchwork Fri Aug 17 15:05:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958945 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRpL0d4yz9sC7 for ; Sat, 18 Aug 2018 01:24:57 +1000 (AEST) Received: from localhost ([::1]:34732 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgcR-0007VG-DB for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:24:55 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46244) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKH-00035A-CJ for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKE-0001kr-OB for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:09 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46138 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001iB-2E for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4C452407B391; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 211152026D6C; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 2B087110E656; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:18 +0200 Message-Id: <20180817150559.16243-20-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 19/60] json: Tighten and simplify qstring_from_escaped_str()'s loop X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Simplify loop control, and assert that the string ends with the appropriate quote (the lexer ensures it does). Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 30 +++++++----------------------- 1 file changed, 7 insertions(+), 23 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index a5aa790d62..164b86769b 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -132,65 +132,49 @@ static QString *qstring_from_escaped_str(JSONParserContext *ctxt, { const char *ptr = token->str; QString *str; - int double_quote = 1; - - if (*ptr == '"') { - double_quote = 1; - } else { - double_quote = 0; - } - ptr++; + char quote; + assert(*ptr == '"' || *ptr == '\''); + quote = *ptr++; str = qstring_new(); - while (*ptr && - ((double_quote && *ptr != '"') || (!double_quote && *ptr != '\''))) { + + while (*ptr != quote) { + assert(*ptr); if (*ptr == '\\') { ptr++; - - switch (*ptr) { + switch (*ptr++) { case '"': qstring_append(str, "\""); - ptr++; break; case '\'': qstring_append(str, "'"); - ptr++; break; case '\\': qstring_append(str, "\\"); - ptr++; break; case '/': qstring_append(str, "/"); - ptr++; break; case 'b': qstring_append(str, "\b"); - ptr++; break; case 'f': qstring_append(str, "\f"); - ptr++; break; case 'n': qstring_append(str, "\n"); - ptr++; break; case 'r': qstring_append(str, "\r"); - ptr++; break; case 't': qstring_append(str, "\t"); - ptr++; break; case 'u': { uint16_t unicode_char = 0; char utf8_char[4]; int i = 0; - ptr++; - for (i = 0; i < 4; i++) { if (qemu_isxdigit(*ptr)) { unicode_char |= hex2decimal(*ptr) << ((3 - i) * 4); From patchwork Fri Aug 17 15:05:19 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958987 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sShw1C7qz9s47 for ; Sat, 18 Aug 2018 02:05:20 +1000 (AEST) Received: from localhost ([::1]:35003 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhFV-0007ci-Sf for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:05:17 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46588) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKV-0003Hk-Eh for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001lw-EP for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:15 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57098 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001im-R1 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8597C26A40; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 219E710D18F1; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 2E8CE110E662; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:19 +0200 Message-Id: <20180817150559.16243-21-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 20/60] check-qjson: Document we expect invalid UTF-8 to be rejected X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The JSON parser rejects some invalid sequences, but accepts others without correcting the problem. We should either reject all invalid sequences, or minimize overlong sequences and replace all other invalid sequences by a suitable replacement character. A common choice for replacement is U+FFFD. I'm going to implement the former. Update the comments in utf8_string() to expect this. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 151 +++++++++++++++++++++----------------------- 1 file changed, 71 insertions(+), 80 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index dd6bb76ec5..479c97c3db 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -157,13 +157,7 @@ static void utf8_string(void) * They're all marked "bug:" below, and are to be replaced by * correct ones as the bugs get fixed. * - * The JSON parser rejects some invalid sequences, but accepts - * others without correcting the problem. - * - * We should either reject all invalid sequences, or minimize - * overlong sequences and replace all other invalid sequences by a - * suitable replacement character. A common choice for - * replacement is U+FFFD. + * The JSON parser rejects some, but not all invalid sequences. * * Problem: we can't easily deal with embedded U+0000. Parsing * the JSON string "this \\u0000" is fun" yields "this \0 is fun", @@ -185,11 +179,8 @@ static void utf8_string(void) } test_cases[] = { /* * Bug markers used here: - * - bug: not corrected - * JSON parser fails to correct invalid sequence(s) - * - bug: rejected - * JSON parser rejects invalid sequence(s) - * We may choose to define this as feature + * - bug: not rejected + * JSON parser fails to reject invalid sequence(s) */ /* 0 Control characters */ @@ -257,13 +248,13 @@ static void utf8_string(void) /* 2.1.5 5 bytes U+200000 */ { "\xF8\x88\x80\x80\x80", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 2.1.6 6 bytes U+4000000 */ { "\xFC\x84\x80\x80\x80\x80", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 2.2 Last possible sequence of a certain length */ @@ -296,19 +287,19 @@ static void utf8_string(void) /* 2.2.4 4 bytes U+1FFFFF */ { "\xF7\xBF\xBF\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 2.2.5 5 bytes U+3FFFFFF */ { "\xFB\xBF\xBF\xBF\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 2.2.6 6 bytes U+7FFFFFFF */ { "\xFD\xBF\xBF\xBF\xBF\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 2.3 Other boundary conditions */ @@ -347,49 +338,49 @@ static void utf8_string(void) /* 3.1.1 First continuation byte */ { "\x80", - "\x80", /* bug: not corrected */ + "\x80", /* bug: not rejected */ "\\uFFFD", }, /* 3.1.2 Last continuation byte */ { "\xBF", - "\xBF", /* bug: not corrected */ + "\xBF", /* bug: not rejected */ "\\uFFFD", }, /* 3.1.3 2 continuation bytes */ { "\x80\xBF", - "\x80\xBF", /* bug: not corrected */ + "\x80\xBF", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, /* 3.1.4 3 continuation bytes */ { "\x80\xBF\x80", - "\x80\xBF\x80", /* bug: not corrected */ + "\x80\xBF\x80", /* bug: not rejected */ "\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.5 4 continuation bytes */ { "\x80\xBF\x80\xBF", - "\x80\xBF\x80\xBF", /* bug: not corrected */ + "\x80\xBF\x80\xBF", /* bug: not rejected */ "\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.6 5 continuation bytes */ { "\x80\xBF\x80\xBF\x80", - "\x80\xBF\x80\xBF\x80", /* bug: not corrected */ + "\x80\xBF\x80\xBF\x80", /* bug: not rejected */ "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.7 6 continuation bytes */ { "\x80\xBF\x80\xBF\x80\xBF", - "\x80\xBF\x80\xBF\x80\xBF", /* bug: not corrected */ + "\x80\xBF\x80\xBF\x80\xBF", /* bug: not rejected */ "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.8 7 continuation bytes */ { "\x80\xBF\x80\xBF\x80\xBF\x80", - "\x80\xBF\x80\xBF\x80\xBF\x80", /* bug: not corrected */ + "\x80\xBF\x80\xBF\x80\xBF\x80", /* bug: not rejected */ "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.9 Sequence of all 64 possible continuation bytes */ @@ -402,7 +393,7 @@ static void utf8_string(void) "\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF" "\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7" "\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF", - /* bug: not corrected */ + /* bug: not rejected */ "\x80\x81\x82\x83\x84\x85\x86\x87" "\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F" "\x90\x91\x92\x93\x94\x95\x96\x97" @@ -427,7 +418,7 @@ static void utf8_string(void) "\xC8 \xC9 \xCA \xCB \xCC \xCD \xCE \xCF " "\xD0 \xD1 \xD2 \xD3 \xD4 \xD5 \xD6 \xD7 " "\xD8 \xD9 \xDA \xDB \xDC \xDD \xDE \xDF ", - NULL, /* bug: rejected (partly, see FIXME below) */ + NULL, /* bug: accepted partly, see FIXME below */ "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " @@ -437,7 +428,7 @@ static void utf8_string(void) { "\xE0 \xE1 \xE2 \xE3 \xE4 \xE5 \xE6 \xE7 " "\xE8 \xE9 \xEA \xEB \xEC \xED \xEE \xEF ", - /* bug: not corrected */ + /* bug: not rejected */ "\xE0 \xE1 \xE2 \xE3 \xE4 \xE5 \xE6 \xE7 " "\xE8 \xE9 \xEA \xEB \xEC \xED \xEE \xEF ", "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " @@ -446,131 +437,131 @@ static void utf8_string(void) /* 3.2.3 All 8 first bytes of 4-byte sequences, followed by space */ { "\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ", - NULL, /* bug: rejected (partly, see FIXME below) */ + NULL, /* bug: accepted partly, see FIXME below */ "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", }, /* 3.2.4 All 4 first bytes of 5-byte sequences, followed by space */ { "\xF8 \xF9 \xFA \xFB ", - NULL, /* bug: rejected */ + NULL, "\\uFFFD \\uFFFD \\uFFFD \\uFFFD ", }, /* 3.2.5 All 2 first bytes of 6-byte sequences, followed by space */ { "\xFC \xFD ", - NULL, /* bug: rejected */ + NULL, "\\uFFFD \\uFFFD ", }, /* 3.3 Sequences with last continuation byte missing */ /* 3.3.1 2-byte sequence with last byte missing (U+0000) */ { "\xC0", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 3.3.2 3-byte sequence with last byte missing (U+0000) */ { "\xE0\x80", - "\xE0\x80", /* bug: not corrected */ + "\xE0\x80", /* bug: not rejected */ "\\uFFFD", }, /* 3.3.3 4-byte sequence with last byte missing (U+0000) */ { "\xF0\x80\x80", - "\xF0\x80\x80", /* bug: not corrected */ + "\xF0\x80\x80", /* bug: not rejected */ "\\uFFFD", }, /* 3.3.4 5-byte sequence with last byte missing (U+0000) */ { "\xF8\x80\x80\x80", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 3.3.5 6-byte sequence with last byte missing (U+0000) */ { "\xFC\x80\x80\x80\x80", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 3.3.6 2-byte sequence with last byte missing (U+07FF) */ { "\xDF", - "\xDF", /* bug: not corrected */ + "\xDF", /* bug: not rejected */ "\\uFFFD", }, /* 3.3.7 3-byte sequence with last byte missing (U+FFFF) */ { "\xEF\xBF", - "\xEF\xBF", /* bug: not corrected */ + "\xEF\xBF", /* bug: not rejected */ "\\uFFFD", }, /* 3.3.8 4-byte sequence with last byte missing (U+1FFFFF) */ { "\xF7\xBF\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 3.3.9 5-byte sequence with last byte missing (U+3FFFFFF) */ { "\xFB\xBF\xBF\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 3.3.10 6-byte sequence with last byte missing (U+7FFFFFFF) */ { "\xFD\xBF\xBF\xBF\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 3.4 Concatenation of incomplete sequences */ { "\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80" "\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF", - NULL, /* bug: rejected (partly, see FIXME below) */ + NULL, /* bug: accepted partly, see FIXME below */ "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.5 Impossible bytes */ { "\xFE", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, { "\xFF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, { "\xFE\xFE\xFF\xFF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 4 Overlong sequences */ /* 4.1 Overlong '/' */ { "\xC0\xAF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, { "\xE0\x80\xAF", - "\xE0\x80\xAF", /* bug: not corrected */ + "\xE0\x80\xAF", /* bug: not rejected */ "\\uFFFD", }, { "\xF0\x80\x80\xAF", - "\xF0\x80\x80\xAF", /* bug: not corrected */ + "\xF0\x80\x80\xAF", /* bug: not rejected */ "\\uFFFD", }, { "\xF8\x80\x80\x80\xAF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, { "\xFC\x80\x80\x80\x80\xAF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* @@ -582,13 +573,13 @@ static void utf8_string(void) { /* \U+007F */ "\xC1\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, { /* \U+07FF */ "\xE0\x9F\xBF", - "\xE0\x9F\xBF", /* bug: not corrected */ + "\xE0\x9F\xBF", /* bug: not rejected */ "\\uFFFD", }, { @@ -599,50 +590,50 @@ static void utf8_string(void) * also 2.2.3 */ "\xF0\x8F\xBF\xBC", - "\xF0\x8F\xBF\xBC", /* bug: not corrected */ + "\xF0\x8F\xBF\xBC", /* bug: not rejected */ "\\uFFFD", }, { /* \U+1FFFFF */ "\xF8\x87\xBF\xBF\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, { /* \U+3FFFFFF */ "\xFC\x83\xBF\xBF\xBF\xBF", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 4.3 Overlong representation of the NUL character */ { /* \U+0000 */ "\xC0\x80", - NULL, /* bug: rejected */ + NULL, "\\u0000", }, { /* \U+0000 */ "\xE0\x80\x80", - "\xE0\x80\x80", /* bug: not corrected */ + "\xE0\x80\x80", /* bug: not rejected */ "\\uFFFD", }, { /* \U+0000 */ "\xF0\x80\x80\x80", - "\xF0\x80\x80\x80", /* bug: not corrected */ + "\xF0\x80\x80\x80", /* bug: not rejected */ "\\uFFFD", }, { /* \U+0000 */ "\xF8\x80\x80\x80\x80", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, { /* \U+0000 */ "\xFC\x80\x80\x80\x80\x80", - NULL, /* bug: rejected */ + NULL, "\\uFFFD", }, /* 5 Illegal code positions */ @@ -650,92 +641,92 @@ static void utf8_string(void) { /* \U+D800 */ "\xED\xA0\x80", - "\xED\xA0\x80", /* bug: not corrected */ + "\xED\xA0\x80", /* bug: not rejected */ "\\uFFFD", }, { /* \U+DB7F */ "\xED\xAD\xBF", - "\xED\xAD\xBF", /* bug: not corrected */ + "\xED\xAD\xBF", /* bug: not rejected */ "\\uFFFD", }, { /* \U+DB80 */ "\xED\xAE\x80", - "\xED\xAE\x80", /* bug: not corrected */ + "\xED\xAE\x80", /* bug: not rejected */ "\\uFFFD", }, { /* \U+DBFF */ "\xED\xAF\xBF", - "\xED\xAF\xBF", /* bug: not corrected */ + "\xED\xAF\xBF", /* bug: not rejected */ "\\uFFFD", }, { /* \U+DC00 */ "\xED\xB0\x80", - "\xED\xB0\x80", /* bug: not corrected */ + "\xED\xB0\x80", /* bug: not rejected */ "\\uFFFD", }, { /* \U+DF80 */ "\xED\xBE\x80", - "\xED\xBE\x80", /* bug: not corrected */ + "\xED\xBE\x80", /* bug: not rejected */ "\\uFFFD", }, { /* \U+DFFF */ "\xED\xBF\xBF", - "\xED\xBF\xBF", /* bug: not corrected */ + "\xED\xBF\xBF", /* bug: not rejected */ "\\uFFFD", }, /* 5.2 Paired UTF-16 surrogates */ { /* \U+D800\U+DC00 */ "\xED\xA0\x80\xED\xB0\x80", - "\xED\xA0\x80\xED\xB0\x80", /* bug: not corrected */ + "\xED\xA0\x80\xED\xB0\x80", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, { /* \U+D800\U+DFFF */ "\xED\xA0\x80\xED\xBF\xBF", - "\xED\xA0\x80\xED\xBF\xBF", /* bug: not corrected */ + "\xED\xA0\x80\xED\xBF\xBF", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, { /* \U+DB7F\U+DC00 */ "\xED\xAD\xBF\xED\xB0\x80", - "\xED\xAD\xBF\xED\xB0\x80", /* bug: not corrected */ + "\xED\xAD\xBF\xED\xB0\x80", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, { /* \U+DB7F\U+DFFF */ "\xED\xAD\xBF\xED\xBF\xBF", - "\xED\xAD\xBF\xED\xBF\xBF", /* bug: not corrected */ + "\xED\xAD\xBF\xED\xBF\xBF", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, { /* \U+DB80\U+DC00 */ "\xED\xAE\x80\xED\xB0\x80", - "\xED\xAE\x80\xED\xB0\x80", /* bug: not corrected */ + "\xED\xAE\x80\xED\xB0\x80", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, { /* \U+DB80\U+DFFF */ "\xED\xAE\x80\xED\xBF\xBF", - "\xED\xAE\x80\xED\xBF\xBF", /* bug: not corrected */ + "\xED\xAE\x80\xED\xBF\xBF", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, { /* \U+DBFF\U+DC00 */ "\xED\xAF\xBF\xED\xB0\x80", - "\xED\xAF\xBF\xED\xB0\x80", /* bug: not corrected */ + "\xED\xAF\xBF\xED\xB0\x80", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, { /* \U+DBFF\U+DFFF */ "\xED\xAF\xBF\xED\xBF\xBF", - "\xED\xAF\xBF\xED\xBF\xBF", /* bug: not corrected */ + "\xED\xAF\xBF\xED\xBF\xBF", /* bug: not rejected */ "\\uFFFD\\uFFFD", }, /* 5.3 Other illegal code positions */ @@ -743,25 +734,25 @@ static void utf8_string(void) { /* \U+FFFE */ "\xEF\xBF\xBE", - "\xEF\xBF\xBE", /* bug: not corrected */ + "\xEF\xBF\xBE", /* bug: not rejected */ "\\uFFFD", }, { /* \U+FFFF */ "\xEF\xBF\xBF", - "\xEF\xBF\xBF", /* bug: not corrected */ + "\xEF\xBF\xBF", /* bug: not rejected */ "\\uFFFD", }, { /* U+FDD0 */ "\xEF\xB7\x90", - "\xEF\xB7\x90", /* bug: not corrected */ + "\xEF\xB7\x90", /* bug: not rejected */ "\\uFFFD", }, { /* U+FDEF */ "\xEF\xB7\xAF", - "\xEF\xB7\xAF", /* bug: not corrected */ + "\xEF\xB7\xAF", /* bug: not rejected */ "\\uFFFD", }, /* Plane 1 .. 16 noncharacters */ @@ -783,7 +774,7 @@ static void utf8_string(void) "\xF3\xAF\xBF\xBE\xF3\xAF\xBF\xBF" "\xF3\xBF\xBF\xBE\xF3\xBF\xBF\xBF" "\xF4\x8F\xBF\xBE\xF4\x8F\xBF\xBF", - /* bug: not corrected */ + /* bug: not rejected */ "\xF0\x9F\xBF\xBE\xF0\x9F\xBF\xBF" "\xF0\xAF\xBF\xBE\xF0\xAF\xBF\xBF" "\xF0\xBF\xBF\xBE\xF0\xBF\xBF\xBF" From patchwork Fri Aug 17 15:05:20 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958985 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSdn4rGWz9sCP for ; Sat, 18 Aug 2018 02:02:37 +1000 (AEST) Received: from localhost ([::1]:34968 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhCt-0005hY-90 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:02:35 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46590) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKV-0003Hl-Er for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001li-CM for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:15 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56240 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001ip-Kx for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 93A242635A; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2BF2A2027047; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 3203B110E66B; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:20 +0200 Message-Id: <20180817150559.16243-22-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 21/60] json: Reject invalid UTF-8 sequences X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" We reject bytes that can't occur in valid UTF-8 (\xC0..\xC1, \xF5..\xFF in the lexer. That's insufficient; there's plenty of invalid UTF-8 not containing these bytes, as demonstrated by check-qjson: * Malformed sequences - Unexpected continuation bytes - Missing continuation bytes after start bytes other than \xC0..\xC1, \xF5..\xFD. * Overlong sequences with start bytes other than \xC0..\xC1, \xF5..\xFD. * Invalid code points Fixing this in the lexer would be bothersome. Fixing it in the parser is straightforward, so do that. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qemu/unicode.h | 1 + qobject/json-parser.c | 20 ++++-- tests/check-qjson.c | 137 ++++++++++++++--------------------------- util/unicode.c | 69 ++++++++++++++++++--- 4 files changed, 122 insertions(+), 105 deletions(-) diff --git a/include/qemu/unicode.h b/include/qemu/unicode.h index 71c72db461..7fa10b8e60 100644 --- a/include/qemu/unicode.h +++ b/include/qemu/unicode.h @@ -2,5 +2,6 @@ #define QEMU_UNICODE_H int mod_utf8_codepoint(const char *s, size_t n, char **end); +ssize_t mod_utf8_encode(char buf[], size_t bufsz, int codepoint); #endif diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 164b86769b..0e232ff101 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -13,6 +13,7 @@ #include "qemu/osdep.h" #include "qemu/cutils.h" +#include "qemu/unicode.h" #include "qapi/error.h" #include "qemu-common.h" #include "qapi/qmp/qbool.h" @@ -133,6 +134,10 @@ static QString *qstring_from_escaped_str(JSONParserContext *ctxt, const char *ptr = token->str; QString *str; char quote; + int cp; + char *end; + ssize_t len; + char utf8_buf[5]; assert(*ptr == '"' || *ptr == '\''); quote = *ptr++; @@ -194,12 +199,15 @@ static QString *qstring_from_escaped_str(JSONParserContext *ctxt, goto out; } } else { - char dummy[2]; - - dummy[0] = *ptr++; - dummy[1] = 0; - - qstring_append(str, dummy); + cp = mod_utf8_codepoint(ptr, 6, &end); + if (cp <= 0) { + parse_error(ctxt, token, "invalid UTF-8 sequence in string"); + goto out; + } + ptr = end; + len = mod_utf8_encode(utf8_buf, sizeof(utf8_buf), cp); + assert(len >= 0); + qstring_append(str, utf8_buf); } } diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 479c97c3db..409a03fe24 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -152,13 +152,6 @@ static void string_with_quotes(void) static void utf8_string(void) { /* - * FIXME Current behavior for invalid UTF-8 sequences is - * incorrect. This test expects current, incorrect results. - * They're all marked "bug:" below, and are to be replaced by - * correct ones as the bugs get fixed. - * - * The JSON parser rejects some, but not all invalid sequences. - * * Problem: we can't easily deal with embedded U+0000. Parsing * the JSON string "this \\u0000" is fun" yields "this \0 is fun", * which gets misinterpreted as NUL-terminated "this ". We should @@ -177,12 +170,6 @@ static void utf8_string(void) /* Expected unparse output, defaults to @json_in */ const char *json_out; } test_cases[] = { - /* - * Bug markers used here: - * - bug: not rejected - * JSON parser fails to reject invalid sequence(s) - */ - /* 0 Control characters */ { /* @@ -330,7 +317,7 @@ static void utf8_string(void) { /* first one beyond Unicode range: U+110000 */ "\xF4\x90\x80\x80", - "\xF4\x90\x80\x80", + NULL, "\\uFFFD", }, /* 3 Malformed sequences */ @@ -338,49 +325,49 @@ static void utf8_string(void) /* 3.1.1 First continuation byte */ { "\x80", - "\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, /* 3.1.2 Last continuation byte */ { "\xBF", - "\xBF", /* bug: not rejected */ + NULL, "\\uFFFD", }, /* 3.1.3 2 continuation bytes */ { "\x80\xBF", - "\x80\xBF", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, /* 3.1.4 3 continuation bytes */ { "\x80\xBF\x80", - "\x80\xBF\x80", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.5 4 continuation bytes */ { "\x80\xBF\x80\xBF", - "\x80\xBF\x80\xBF", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.6 5 continuation bytes */ { "\x80\xBF\x80\xBF\x80", - "\x80\xBF\x80\xBF\x80", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.7 6 continuation bytes */ { "\x80\xBF\x80\xBF\x80\xBF", - "\x80\xBF\x80\xBF\x80\xBF", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.8 7 continuation bytes */ { "\x80\xBF\x80\xBF\x80\xBF\x80", - "\x80\xBF\x80\xBF\x80\xBF\x80", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.1.9 Sequence of all 64 possible continuation bytes */ @@ -393,16 +380,7 @@ static void utf8_string(void) "\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF" "\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7" "\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF", - /* bug: not rejected */ - "\x80\x81\x82\x83\x84\x85\x86\x87" - "\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F" - "\x90\x91\x92\x93\x94\x95\x96\x97" - "\x98\x99\x9A\x9B\x9C\x9D\x9E\x9F" - "\xA0\xA1\xA2\xA3\xA4\xA5\xA6\xA7" - "\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF" - "\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7" - "\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF", - "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" + NULL, "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" @@ -410,6 +388,7 @@ static void utf8_string(void) "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" + "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, /* 3.2 Lonely start characters */ /* 3.2.1 All 32 first bytes of 2-byte sequences, followed by space */ @@ -418,7 +397,7 @@ static void utf8_string(void) "\xC8 \xC9 \xCA \xCB \xCC \xCD \xCE \xCF " "\xD0 \xD1 \xD2 \xD3 \xD4 \xD5 \xD6 \xD7 " "\xD8 \xD9 \xDA \xDB \xDC \xDD \xDE \xDF ", - NULL, /* bug: accepted partly, see FIXME below */ + NULL, "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " @@ -428,16 +407,14 @@ static void utf8_string(void) { "\xE0 \xE1 \xE2 \xE3 \xE4 \xE5 \xE6 \xE7 " "\xE8 \xE9 \xEA \xEB \xEC \xED \xEE \xEF ", - /* bug: not rejected */ - "\xE0 \xE1 \xE2 \xE3 \xE4 \xE5 \xE6 \xE7 " - "\xE8 \xE9 \xEA \xEB \xEC \xED \xEE \xEF ", + NULL, "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD " "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", }, /* 3.2.3 All 8 first bytes of 4-byte sequences, followed by space */ { "\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ", - NULL, /* bug: accepted partly, see FIXME below */ + NULL, "\\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD \\uFFFD ", }, /* 3.2.4 All 4 first bytes of 5-byte sequences, followed by space */ @@ -462,13 +439,13 @@ static void utf8_string(void) /* 3.3.2 3-byte sequence with last byte missing (U+0000) */ { "\xE0\x80", - "\xE0\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, /* 3.3.3 4-byte sequence with last byte missing (U+0000) */ { "\xF0\x80\x80", - "\xF0\x80\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, /* 3.3.4 5-byte sequence with last byte missing (U+0000) */ @@ -486,13 +463,13 @@ static void utf8_string(void) /* 3.3.6 2-byte sequence with last byte missing (U+07FF) */ { "\xDF", - "\xDF", /* bug: not rejected */ + NULL, "\\uFFFD", }, /* 3.3.7 3-byte sequence with last byte missing (U+FFFF) */ { "\xEF\xBF", - "\xEF\xBF", /* bug: not rejected */ + NULL, "\\uFFFD", }, /* 3.3.8 4-byte sequence with last byte missing (U+1FFFFF) */ @@ -517,7 +494,7 @@ static void utf8_string(void) { "\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80" "\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF", - NULL, /* bug: accepted partly, see FIXME below */ + NULL, "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD", }, @@ -546,12 +523,12 @@ static void utf8_string(void) }, { "\xE0\x80\xAF", - "\xE0\x80\xAF", /* bug: not rejected */ + NULL, "\\uFFFD", }, { "\xF0\x80\x80\xAF", - "\xF0\x80\x80\xAF", /* bug: not rejected */ + NULL, "\\uFFFD", }, { @@ -579,7 +556,7 @@ static void utf8_string(void) { /* \U+07FF */ "\xE0\x9F\xBF", - "\xE0\x9F\xBF", /* bug: not rejected */ + NULL, "\\uFFFD", }, { @@ -590,7 +567,7 @@ static void utf8_string(void) * also 2.2.3 */ "\xF0\x8F\xBF\xBC", - "\xF0\x8F\xBF\xBC", /* bug: not rejected */ + NULL, "\\uFFFD", }, { @@ -615,13 +592,13 @@ static void utf8_string(void) { /* \U+0000 */ "\xE0\x80\x80", - "\xE0\x80\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* \U+0000 */ "\xF0\x80\x80\x80", - "\xF0\x80\x80\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, { @@ -641,92 +618,92 @@ static void utf8_string(void) { /* \U+D800 */ "\xED\xA0\x80", - "\xED\xA0\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* \U+DB7F */ "\xED\xAD\xBF", - "\xED\xAD\xBF", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* \U+DB80 */ "\xED\xAE\x80", - "\xED\xAE\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* \U+DBFF */ "\xED\xAF\xBF", - "\xED\xAF\xBF", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* \U+DC00 */ "\xED\xB0\x80", - "\xED\xB0\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* \U+DF80 */ "\xED\xBE\x80", - "\xED\xBE\x80", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* \U+DFFF */ "\xED\xBF\xBF", - "\xED\xBF\xBF", /* bug: not rejected */ + NULL, "\\uFFFD", }, /* 5.2 Paired UTF-16 surrogates */ { /* \U+D800\U+DC00 */ "\xED\xA0\x80\xED\xB0\x80", - "\xED\xA0\x80\xED\xB0\x80", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, { /* \U+D800\U+DFFF */ "\xED\xA0\x80\xED\xBF\xBF", - "\xED\xA0\x80\xED\xBF\xBF", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, { /* \U+DB7F\U+DC00 */ "\xED\xAD\xBF\xED\xB0\x80", - "\xED\xAD\xBF\xED\xB0\x80", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, { /* \U+DB7F\U+DFFF */ "\xED\xAD\xBF\xED\xBF\xBF", - "\xED\xAD\xBF\xED\xBF\xBF", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, { /* \U+DB80\U+DC00 */ "\xED\xAE\x80\xED\xB0\x80", - "\xED\xAE\x80\xED\xB0\x80", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, { /* \U+DB80\U+DFFF */ "\xED\xAE\x80\xED\xBF\xBF", - "\xED\xAE\x80\xED\xBF\xBF", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, { /* \U+DBFF\U+DC00 */ "\xED\xAF\xBF\xED\xB0\x80", - "\xED\xAF\xBF\xED\xB0\x80", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, { /* \U+DBFF\U+DFFF */ "\xED\xAF\xBF\xED\xBF\xBF", - "\xED\xAF\xBF\xED\xBF\xBF", /* bug: not rejected */ + NULL, "\\uFFFD\\uFFFD", }, /* 5.3 Other illegal code positions */ @@ -734,25 +711,25 @@ static void utf8_string(void) { /* \U+FFFE */ "\xEF\xBF\xBE", - "\xEF\xBF\xBE", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* \U+FFFF */ "\xEF\xBF\xBF", - "\xEF\xBF\xBF", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* U+FDD0 */ "\xEF\xB7\x90", - "\xEF\xB7\x90", /* bug: not rejected */ + NULL, "\\uFFFD", }, { /* U+FDEF */ "\xEF\xB7\xAF", - "\xEF\xB7\xAF", /* bug: not rejected */ + NULL, "\\uFFFD", }, /* Plane 1 .. 16 noncharacters */ @@ -774,23 +751,7 @@ static void utf8_string(void) "\xF3\xAF\xBF\xBE\xF3\xAF\xBF\xBF" "\xF3\xBF\xBF\xBE\xF3\xBF\xBF\xBF" "\xF4\x8F\xBF\xBE\xF4\x8F\xBF\xBF", - /* bug: not rejected */ - "\xF0\x9F\xBF\xBE\xF0\x9F\xBF\xBF" - "\xF0\xAF\xBF\xBE\xF0\xAF\xBF\xBF" - "\xF0\xBF\xBF\xBE\xF0\xBF\xBF\xBF" - "\xF1\x8F\xBF\xBE\xF1\x8F\xBF\xBF" - "\xF1\x9F\xBF\xBE\xF1\x9F\xBF\xBF" - "\xF1\xAF\xBF\xBE\xF1\xAF\xBF\xBF" - "\xF1\xBF\xBF\xBE\xF1\xBF\xBF\xBF" - "\xF2\x8F\xBF\xBE\xF2\x8F\xBF\xBF" - "\xF2\x9F\xBF\xBE\xF2\x9F\xBF\xBF" - "\xF2\xAF\xBF\xBE\xF2\xAF\xBF\xBF" - "\xF2\xBF\xBF\xBE\xF2\xBF\xBF\xBF" - "\xF3\x8F\xBF\xBE\xF3\x8F\xBF\xBF" - "\xF3\x9F\xBF\xBE\xF3\x9F\xBF\xBF" - "\xF3\xAF\xBF\xBE\xF3\xAF\xBF\xBF" - "\xF3\xBF\xBF\xBE\xF3\xBF\xBF\xBF" - "\xF4\x8F\xBF\xBE\xF4\x8F\xBF\xBF", + NULL, "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" "\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD\\uFFFD" @@ -829,14 +790,6 @@ static void utf8_string(void) } in = strndup(tail, end - tail); str = from_json_str(in, NULL, j); - /* - * FIXME JSON parser accepts invalid sequence - * starting with \xC2..\xF4 - */ - if (*in >= '\xC2' && *in <= '\xF4') { - g_free(str); - str = NULL; - } g_assert(!str); g_free(in); } diff --git a/util/unicode.c b/util/unicode.c index a812a35171..8580bc598b 100644 --- a/util/unicode.c +++ b/util/unicode.c @@ -13,6 +13,21 @@ #include "qemu/osdep.h" #include "qemu/unicode.h" +static bool is_valid_codepoint(int codepoint) +{ + if (codepoint > 0x10FFFFu) { + return false; /* beyond Unicode range */ + } + if ((codepoint >= 0xFDD0 && codepoint <= 0xFDEF) + || (codepoint & 0xFFFE) == 0xFFFE) { + return false; /* noncharacter */ + } + if (codepoint >= 0xD800 && codepoint <= 0xDFFF) { + return false; /* surrogate code point */ + } + return true; +} + /** * mod_utf8_codepoint: * @s: string encoded in modified UTF-8 @@ -83,13 +98,8 @@ int mod_utf8_codepoint(const char *s, size_t n, char **end) cp <<= 6; cp |= byte & 0x3F; } - if (cp > 0x10FFFF) { - cp = -1; /* beyond Unicode range */ - } else if ((cp >= 0xFDD0 && cp <= 0xFDEF) - || (cp & 0xFFFE) == 0xFFFE) { - cp = -1; /* noncharacter */ - } else if (cp >= 0xD800 && cp <= 0xDFFF) { - cp = -1; /* surrogate code point */ + if (!is_valid_codepoint(cp)) { + cp = -1; } else if (cp < min_cp[len - 2] && !(cp == 0 && len == 2)) { cp = -1; /* overlong, not \xC0\x80 */ } @@ -99,3 +109,48 @@ out: *end = (char *)p; return cp; } + +/** + * mod_utf8_encode: + * @buf: Destination buffer + * @bufsz: size of @buf, at least 5. + * @codepoint: Unicode codepoint to encode + * + * Convert Unicode codepoint @codepoint to modified UTF-8. + * + * Returns: the length of the UTF-8 sequence on success, -1 when + * @codepoint is invalid. + */ +ssize_t mod_utf8_encode(char buf[], size_t bufsz, int codepoint) +{ + assert(bufsz >= 5); + + if (!is_valid_codepoint(codepoint)) { + return -1; + } + + if (codepoint > 0 && codepoint <= 0x7F) { + buf[0] = codepoint & 0x7F; + buf[1] = 0; + return 1; + } + if (codepoint <= 0x7FF) { + buf[0] = 0xC0 | ((codepoint >> 6) & 0x1F); + buf[1] = 0x80 | (codepoint & 0x3F); + buf[2] = 0; + return 2; + } + if (codepoint <= 0xFFFF) { + buf[0] = 0xE0 | ((codepoint >> 12) & 0x0F); + buf[1] = 0x80 | ((codepoint >> 6) & 0x3F); + buf[2] = 0x80 | (codepoint & 0x3F); + buf[3] = 0; + return 3; + } + buf[0] = 0xF0 | ((codepoint >> 18) & 0x07); + buf[1] = 0x80 | ((codepoint >> 12) & 0x3F); + buf[2] = 0x80 | ((codepoint >> 6) & 0x3F); + buf[3] = 0x80 | (codepoint & 0x3F); + buf[4] = 0; + return 4; +} From patchwork Fri Aug 17 15:05:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958942 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRkv12Kdz9sBx for ; Sat, 18 Aug 2018 01:21:59 +1000 (AEST) Received: from localhost ([::1]:34718 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgZY-0004s1-Nb for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:21:56 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46260) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKI-00035f-07 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001lO-7F for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:09 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46442 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001iG-Cp for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 53880819703B; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2E8891687A; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 35600110E677; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:21 +0200 Message-Id: <20180817150559.16243-23-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 22/60] json: Report first rather than last parse error X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Quiz time! When a parser reports multiple errors, but the user gets to see just one, which one is (on average) the least useful one? Yes, you're right, it's the last one! You're clearly familiar with compilers. Which one does QEMU report? Right again, the last one! You're clearly familiar with QEMU. Reproducer: feeding {"abc\xC2ijk": 1}\n to QMP produces {"error": {"class": "GenericError", "desc": "JSON parse error, key is not a string in object"}} Report the first error instead. The reproducer now produces {"error": {"class": "GenericError", "desc": "JSON parse error, invalid UTF-8 sequence in string"}} Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 0e232ff101..b77931614b 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -54,13 +54,13 @@ static void GCC_FMT_ATTR(3, 4) parse_error(JSONParserContext *ctxt, { va_list ap; char message[1024]; + + if (ctxt->err) { + return; + } va_start(ap, msg); vsnprintf(message, sizeof(message), msg, ap); va_end(ap); - if (ctxt->err) { - error_free(ctxt->err); - ctxt->err = NULL; - } error_setg(&ctxt->err, "JSON parse error, %s", message); } From patchwork Fri Aug 17 15:05:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958958 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS5439n2z9sCP for ; Sat, 18 Aug 2018 01:37:44 +1000 (AEST) Received: from localhost ([::1]:34800 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgoo-0008Ph-4y for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:37:42 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46304) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKI-00036Q-R7 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001ln-Cu for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:10 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46146 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001iR-NO for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6F1F9407B395; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 41BB12156714; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 38C64110E679; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:22 +0200 Message-Id: <20180817150559.16243-24-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 23/60] json: Leave rejecting invalid UTF-8 to parser X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Both the lexer and the parser (attempt to) validate UTF-8 in JSON strings. The lexer rejects bytes that can't occur in valid UTF-8: \xC0..\xC1, \xF5..\xFF. This rejects some, but not all invalid UTF-8. It also rejects ASCII control characters \x00..\x1F, in accordance with RFC 7159 (see recent commit "json: Reject unescaped control characters"). When the lexer rejects, it ends the token right after the first bad byte. Good when the bad byte is a newline. Not so good when it's something like an overlong sequence in the middle of a string. For instance, input {"abc\xC0\xAFijk": 1}\n produces the tokens JSON_LCURLY { JSON_ERROR "abc\xC0 JSON_ERROR \xAF JSON_KEYWORD ijk JSON_ERROR ": 1}\n The parser then reports four errors Invalid JSON syntax Invalid JSON syntax JSON parse error, invalid keyword 'ijk' Invalid JSON syntax before it recovers at the newline. The commit before previous made the parser reject invalid UTF-8 sequences. Since then, anything the lexer rejects, the parser would reject as well. Thus, the lexer's rejecting is unnecessary for correctness, and harmful for error reporting. However, we want to keep rejecting ASCII control characters in the lexer, because that produces the behavior we want for unclosed strings. We also need to keep rejecting \xFF in the lexer, because we documented that as a way to reset the JSON parser (docs/interop/qmp-spec.txt section 2.6 QGA Synchronization), which means we can't change how we recover from this error now. I wish we hadn't done that. I think we should treat \xFE the same as \xFF. Change the lexer to accept \xC0..\xC1 and \xF5..\xFD. It now rejects only \x00..\x1F and \xFE..\xFF. Error reporting for invalid UTF-8 in strings is much improved, except for \xFE and \xFF. For the example above, the lexer now produces JSON_LCURLY { JSON_STRING "abc\xC0\xAFijk" JSON_COLON : JSON_INTEGER 1 JSON_RCURLY and the parser reports just JSON parse error, invalid UTF-8 sequence in string Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 109a7d8bb8..ca1e0e2c03 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -177,8 +177,7 @@ static const uint8_t json_lexer[][256] = { ['u'] = IN_DQ_UCODE0, }, [IN_DQ_STRING] = { - [0x20 ... 0xBF] = IN_DQ_STRING, - [0xC2 ... 0xF4] = IN_DQ_STRING, + [0x20 ... 0xFD] = IN_DQ_STRING, ['\\'] = IN_DQ_STRING_ESCAPE, ['"'] = JSON_STRING, }, @@ -217,8 +216,7 @@ static const uint8_t json_lexer[][256] = { ['u'] = IN_SQ_UCODE0, }, [IN_SQ_STRING] = { - [0x20 ... 0xBF] = IN_SQ_STRING, - [0xC2 ... 0xF4] = IN_SQ_STRING, + [0x20 ... 0xFD] = IN_SQ_STRING, ['\\'] = IN_SQ_STRING_ESCAPE, ['\''] = JSON_STRING, }, From patchwork Fri Aug 17 15:05:23 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958977 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSRZ2ppnz9sCP for ; Sat, 18 Aug 2018 01:53:46 +1000 (AEST) Received: from localhost ([::1]:34893 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh4K-0007Ae-0i for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:53:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46262) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKI-00035j-0p for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKE-0001l2-Oq for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:09 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56234 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001iP-5p for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6BC85346FB; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4476D10D18F2; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 3C446110E67A; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:23 +0200 Message-Id: <20180817150559.16243-25-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 24/60] json: Accept overlong \xC0\x80 as U+0000 ("modified UTF-8") X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Since the JSON grammer doesn't accept U+0000 anywhere, this merely exchanges one kind of parse error for another. It's purely for consistency with qobject_to_json(), which accepts \xC0\x80 (see commit e2ec3f97680). Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 2 +- qobject/json-parser.c | 2 +- tests/check-qjson.c | 8 +------- 3 files changed, 3 insertions(+), 9 deletions(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index ca1e0e2c03..36fb665b12 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -93,7 +93,7 @@ * interpolation = %((l|ll|I64)[du]|[ipsf]) * * Note: - * - Input must be encoded in UTF-8. + * - Input must be encoded in modified UTF-8. * - Decoding and validating is left to the parser. */ diff --git a/qobject/json-parser.c b/qobject/json-parser.c index b77931614b..a9b227f56c 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -200,7 +200,7 @@ static QString *qstring_from_escaped_str(JSONParserContext *ctxt, } } else { cp = mod_utf8_codepoint(ptr, 6, &end); - if (cp <= 0) { + if (cp < 0) { parse_error(ctxt, token, "invalid UTF-8 sequence in string"); goto out; } diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 409a03fe24..61940d69c9 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -152,12 +152,6 @@ static void string_with_quotes(void) static void utf8_string(void) { /* - * Problem: we can't easily deal with embedded U+0000. Parsing - * the JSON string "this \\u0000" is fun" yields "this \0 is fun", - * which gets misinterpreted as NUL-terminated "this ". We should - * consider using overlong encoding \xC0\x80 for U+0000 ("modified - * UTF-8"). - * * Most test cases are scraped from Markus Kuhn's UTF-8 decoder * capability and stress test at * http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt @@ -586,7 +580,7 @@ static void utf8_string(void) { /* \U+0000 */ "\xC0\x80", - NULL, + "\xC0\x80", "\\u0000", }, { From patchwork Fri Aug 17 15:05:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958946 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRpr3Sbxz9sBv for ; Sat, 18 Aug 2018 01:25:24 +1000 (AEST) Received: from localhost ([::1]:34736 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgcs-0007qz-3W for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:25:22 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46320) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKJ-000374-Ek for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001mb-Ul for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:10 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56244 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001iq-5q for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 943D75A755; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4BEF7202704F; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 44CF4110E67C; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:24 +0200 Message-Id: <20180817150559.16243-26-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 25/60] json: Leave rejecting invalid escape sequences to parser X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Both lexer and parser reject invalid escape sequences in strings. The parser's check is useless. The lexer ends the token right after the first non-well-formed byte. This tends to lead to suboptimal error reporting. For instance, input {"abc\@ijk": 1} produces the tokens JSON_LCURLY { JSON_ERROR "abc\@ JSON_KEYWORD ijk JSON_ERROR ": 1}\n The parser then reports three errors Invalid JSON syntax JSON parse error, invalid keyword 'ijk' Invalid JSON syntax before it recovers at the newline. Drop the lexer's escape sequence checking, and make it accept the same characters after backslash it accepts elsewhere in strings. It now produces JSON_LCURLY { JSON_STRING "abc\@ijk" JSON_COLON : JSON_INTEGER 1 JSON_RCURLY and the parser reports just JSON parse error, invalid escape sequence in string While there, fix parse_string()'s inaccurate function comment. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 72 +++---------------------------------------- qobject/json-parser.c | 56 +++++++++++++++++++-------------- 2 files changed, 37 insertions(+), 91 deletions(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 36fb665b12..af0a7fdb8a 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -80,6 +80,8 @@ * escape = %x5C ; \ * quotation-mark = %x22 ; " * unescaped = %x20-21 / %x23-5B / %x5D-10FFFF + * [This lexer accepts any non-control character after escape, and + * leaves rejecting invalid ones to the parser.] * * * Extensions over RFC 7159: @@ -99,16 +101,8 @@ enum json_lexer_state { IN_ERROR = 0, /* must really be 0, see json_lexer[] */ - IN_DQ_UCODE3, - IN_DQ_UCODE2, - IN_DQ_UCODE1, - IN_DQ_UCODE0, IN_DQ_STRING_ESCAPE, IN_DQ_STRING, - IN_SQ_UCODE3, - IN_SQ_UCODE2, - IN_SQ_UCODE1, - IN_SQ_UCODE0, IN_SQ_STRING_ESCAPE, IN_SQ_STRING, IN_ZERO, @@ -144,37 +138,8 @@ static const uint8_t json_lexer[][256] = { /* Relies on default initialization to IN_ERROR! */ /* double quote string */ - [IN_DQ_UCODE3] = { - ['0' ... '9'] = IN_DQ_STRING, - ['a' ... 'f'] = IN_DQ_STRING, - ['A' ... 'F'] = IN_DQ_STRING, - }, - [IN_DQ_UCODE2] = { - ['0' ... '9'] = IN_DQ_UCODE3, - ['a' ... 'f'] = IN_DQ_UCODE3, - ['A' ... 'F'] = IN_DQ_UCODE3, - }, - [IN_DQ_UCODE1] = { - ['0' ... '9'] = IN_DQ_UCODE2, - ['a' ... 'f'] = IN_DQ_UCODE2, - ['A' ... 'F'] = IN_DQ_UCODE2, - }, - [IN_DQ_UCODE0] = { - ['0' ... '9'] = IN_DQ_UCODE1, - ['a' ... 'f'] = IN_DQ_UCODE1, - ['A' ... 'F'] = IN_DQ_UCODE1, - }, [IN_DQ_STRING_ESCAPE] = { - ['b'] = IN_DQ_STRING, - ['f'] = IN_DQ_STRING, - ['n'] = IN_DQ_STRING, - ['r'] = IN_DQ_STRING, - ['t'] = IN_DQ_STRING, - ['/'] = IN_DQ_STRING, - ['\\'] = IN_DQ_STRING, - ['\''] = IN_DQ_STRING, - ['\"'] = IN_DQ_STRING, - ['u'] = IN_DQ_UCODE0, + [0x20 ... 0xFD] = IN_DQ_STRING, }, [IN_DQ_STRING] = { [0x20 ... 0xFD] = IN_DQ_STRING, @@ -183,37 +148,8 @@ static const uint8_t json_lexer[][256] = { }, /* single quote string */ - [IN_SQ_UCODE3] = { - ['0' ... '9'] = IN_SQ_STRING, - ['a' ... 'f'] = IN_SQ_STRING, - ['A' ... 'F'] = IN_SQ_STRING, - }, - [IN_SQ_UCODE2] = { - ['0' ... '9'] = IN_SQ_UCODE3, - ['a' ... 'f'] = IN_SQ_UCODE3, - ['A' ... 'F'] = IN_SQ_UCODE3, - }, - [IN_SQ_UCODE1] = { - ['0' ... '9'] = IN_SQ_UCODE2, - ['a' ... 'f'] = IN_SQ_UCODE2, - ['A' ... 'F'] = IN_SQ_UCODE2, - }, - [IN_SQ_UCODE0] = { - ['0' ... '9'] = IN_SQ_UCODE1, - ['a' ... 'f'] = IN_SQ_UCODE1, - ['A' ... 'F'] = IN_SQ_UCODE1, - }, [IN_SQ_STRING_ESCAPE] = { - ['b'] = IN_SQ_STRING, - ['f'] = IN_SQ_STRING, - ['n'] = IN_SQ_STRING, - ['r'] = IN_SQ_STRING, - ['t'] = IN_SQ_STRING, - ['/'] = IN_SQ_STRING, - ['\\'] = IN_SQ_STRING, - ['\''] = IN_SQ_STRING, - ['\"'] = IN_SQ_STRING, - ['u'] = IN_SQ_UCODE0, + [0x20 ... 0xFD] = IN_SQ_STRING, }, [IN_SQ_STRING] = { [0x20 ... 0xFD] = IN_SQ_STRING, diff --git a/qobject/json-parser.c b/qobject/json-parser.c index a9b227f56c..fa8d0fe416 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -106,30 +106,40 @@ static int hex2decimal(char ch) } /** - * parse_string(): Parse a json string and return a QObject + * parse_string(): Parse a JSON string * - * string - * "" - * " chars " - * chars - * char - * char chars - * char - * any-Unicode-character- - * except-"-or-\-or- - * control-character - * \" - * \\ - * \/ - * \b - * \f - * \n - * \r - * \t - * \u four-hex-digits + * From RFC 7159 "The JavaScript Object Notation (JSON) Data + * Interchange Format": + * + * char = unescaped / + * escape ( + * %x22 / ; " quotation mark U+0022 + * %x5C / ; \ reverse solidus U+005C + * %x2F / ; / solidus U+002F + * %x62 / ; b backspace U+0008 + * %x66 / ; f form feed U+000C + * %x6E / ; n line feed U+000A + * %x72 / ; r carriage return U+000D + * %x74 / ; t tab U+0009 + * %x75 4HEXDIG ) ; uXXXX U+XXXX + * escape = %x5C ; \ + * quotation-mark = %x22 ; " + * unescaped = %x20-21 / %x23-5B / %x5D-10FFFF + * + * Extensions over RFC 7159: + * - Extra escape sequence in strings: + * 0x27 (apostrophe) is recognized after escape, too + * - Single-quoted strings: + * Like double-quoted strings, except they're delimited by %x27 + * (apostrophe) instead of %x22 (quotation mark), and can't contain + * unescaped apostrophe, but can contain unescaped quotation mark. + * + * Note: + * - Encoding is modified UTF-8. + * - Invalid Unicode characters are rejected. + * - Control characters \x00..\x1F are rejected by the lexer. */ -static QString *qstring_from_escaped_str(JSONParserContext *ctxt, - JSONToken *token) +static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) { const char *ptr = token->str; QString *str; @@ -495,7 +505,7 @@ static QObject *parse_literal(JSONParserContext *ctxt) switch (token->type) { case JSON_STRING: - return QOBJECT(qstring_from_escaped_str(ctxt, token)); + return QOBJECT(parse_string(ctxt, token)); case JSON_INTEGER: { /* * Represent JSON_INTEGER as QNUM_I64 if possible, else as From patchwork Fri Aug 17 15:05:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958971 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSHx1ZTjz9sCP for ; Sat, 18 Aug 2018 01:47:09 +1000 (AEST) Received: from localhost ([::1]:34860 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgxu-00084E-Q1 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:47:06 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46630) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKc-0003O9-7n for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001oj-KR for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56254 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001jN-Vz for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C230B6F4C7; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4DDE016878; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 4AE8B110E67D; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:25 +0200 Message-Id: <20180817150559.16243-27-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 26/60] json: Simplify parse_string() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 42 +++++++++++++++++++----------------------- 1 file changed, 19 insertions(+), 23 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index fa8d0fe416..8bb278bc7d 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -101,8 +101,7 @@ static int hex2decimal(char ch) } else if (ch >= 'A' && ch <= 'F') { return 10 + (ch - 'A'); } - - return -1; + abort(); } /** @@ -144,7 +143,7 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) const char *ptr = token->str; QString *str; char quote; - int cp; + int cp, i; char *end; ssize_t len; char utf8_buf[5]; @@ -159,51 +158,48 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) ptr++; switch (*ptr++) { case '"': - qstring_append(str, "\""); + qstring_append_chr(str, '"'); break; case '\'': - qstring_append(str, "'"); + qstring_append_chr(str, '\''); break; case '\\': - qstring_append(str, "\\"); + qstring_append_chr(str, '\\'); break; case '/': - qstring_append(str, "/"); + qstring_append_chr(str, '/'); break; case 'b': - qstring_append(str, "\b"); + qstring_append_chr(str, '\b'); break; case 'f': - qstring_append(str, "\f"); + qstring_append_chr(str, '\f'); break; case 'n': - qstring_append(str, "\n"); + qstring_append_chr(str, '\n'); break; case 'r': - qstring_append(str, "\r"); + qstring_append_chr(str, '\r'); break; case 't': - qstring_append(str, "\t"); + qstring_append_chr(str, '\t'); break; - case 'u': { - uint16_t unicode_char = 0; - char utf8_char[4]; - int i = 0; - + case 'u': + cp = 0; for (i = 0; i < 4; i++) { - if (qemu_isxdigit(*ptr)) { - unicode_char |= hex2decimal(*ptr) << ((3 - i) * 4); - } else { + if (!qemu_isxdigit(*ptr)) { parse_error(ctxt, token, "invalid hex escape sequence in string"); goto out; } + cp <<= 4; + cp |= hex2decimal(*ptr); ptr++; } - wchar_to_utf8(unicode_char, utf8_char, sizeof(utf8_char)); - qstring_append(str, utf8_char); - } break; + wchar_to_utf8(cp, utf8_buf, sizeof(utf8_buf)); + qstring_append(str, utf8_buf); + break; default: parse_error(ctxt, token, "invalid escape sequence in string"); goto out; From patchwork Fri Aug 17 15:05:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958940 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRgd5h0Tz9sBv for ; Sat, 18 Aug 2018 01:19:09 +1000 (AEST) Received: from localhost ([::1]:34699 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgWp-0001hQ-Ay for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:19:07 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46328) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKJ-00037R-QJ for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001mk-SF for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:11 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46160 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001j4-3c for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AB2C0407B399; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 602092166BA5; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 5115B110E67F; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:26 +0200 Message-Id: <20180817150559.16243-28-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 27/60] json: Reject invalid \uXXXX, fix \u0000 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The JSON parser translates invalid \uXXXX to garbage instead of rejecting it, and swallows \u0000. Fix by using mod_utf8_encode() instead of flawed wchar_to_utf8(). Valid surrogate pairs are now differently broken: they're rejected instead of translated to garbage. The next commit will fix them. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 35 ++++++----------------------------- tests/check-qjson.c | 41 +++++++++++------------------------------ 2 files changed, 17 insertions(+), 59 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 8bb278bc7d..9985d9929b 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -64,34 +64,6 @@ static void GCC_FMT_ATTR(3, 4) parse_error(JSONParserContext *ctxt, error_setg(&ctxt->err, "JSON parse error, %s", message); } -/** - * String helpers - * - * These helpers are used to unescape strings. - */ -static void wchar_to_utf8(uint16_t wchar, char *buffer, size_t buffer_length) -{ - if (wchar <= 0x007F) { - BUG_ON(buffer_length < 2); - - buffer[0] = wchar & 0x7F; - buffer[1] = 0; - } else if (wchar <= 0x07FF) { - BUG_ON(buffer_length < 3); - - buffer[0] = 0xC0 | ((wchar >> 6) & 0x1F); - buffer[1] = 0x80 | (wchar & 0x3F); - buffer[2] = 0; - } else { - BUG_ON(buffer_length < 4); - - buffer[0] = 0xE0 | ((wchar >> 12) & 0x0F); - buffer[1] = 0x80 | ((wchar >> 6) & 0x3F); - buffer[2] = 0x80 | (wchar & 0x3F); - buffer[3] = 0; - } -} - static int hex2decimal(char ch) { if (ch >= '0' && ch <= '9') { @@ -197,7 +169,12 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) ptr++; } - wchar_to_utf8(cp, utf8_buf, sizeof(utf8_buf)); + if (mod_utf8_encode(utf8_buf, sizeof(utf8_buf), cp) < 0) { + parse_error(ctxt, token, + "\\u%.4s is not a valid Unicode character", + ptr - 3); + goto out; + } qstring_append(str, utf8_buf); break; default: diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 61940d69c9..5c94c80241 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -64,7 +64,7 @@ static void escaped_string(void) { "triple byte utf-8 \\u20AC", "triple byte utf-8 \xe2\x82\xac" }, { "quadruple byte utf-8 \\uD834\\uDD1E", /* U+1D11E */ /* bug: want \xF0\x9D\x84\x9E */ - "quadruple byte utf-8 \xED\xA0\xB4\xED\xB4\x9E", .skip = 1 }, + NULL }, { "\\", NULL }, { "\\z", NULL }, { "\\ux", NULL }, @@ -72,35 +72,16 @@ static void escaped_string(void) { "\\u12x", NULL }, { "\\u123x", NULL }, { "\\u12345", "\341\210\2645" }, - { "\\u0000x", "x", .skip = 1}, /* bug: want \xC0\x80x */ - { "unpaired leading surrogate \\uD800", - /* bug: not rejected */ - "unpaired leading surrogate \355\240\200", .skip = 1 }, - { "unpaired leading surrogate \\uD800\\uCAFE", - /* bug: not rejected */ - "unpaired leading surrogate \355\240\200\354\253\276", .skip = 1 }, - { "unpaired leading surrogate \\uD800\\uD801\\uDC02", - /* bug: not rejected */ - "unpaired leading surrogate \355\240\200\355\240\201\355\260\202", - .skip = 1 }, - { "unpaired trailing surrogate \\uDC00", - /* bug: not rejected */ - "unpaired trailing surrogate \355\260\200", .skip = 1}, - { "backward surrogate pair \\uDC00\\uD800", - /* bug: not rejected */ - "backward surrogate pair \355\260\200\355\240\200", .skip = 1}, - { "noncharacter U+FDD0 \\uFDD0", - /* bug: not rejected */ - "noncharacter U+FDD0 \xEF\xB7\x90", .skip = 1}, - { "noncharacter U+FDEF \\uFDEF", - /* bug: not rejected */ - "noncharacter U+FDEF \xEF\xB7\xAF", .skip = 1}, - { "noncharacter U+1FFFE \\uD87F\\uDFFE", - /* bug: not rejected */ - "noncharacter U+1FFFE \xED\xA1\xBF\xED\xBF\xBE", .skip = 1}, - { "noncharacter U+10FFFF \\uDC3F\\uDFFF", - /* bug: not rejected */ - "noncharacter U+10FFFF \xED\xB0\xBF\xED\xBF\xBF", .skip = 1}, + { "\\u0000x", "\xC0\x80x" }, + { "unpaired leading surrogate \\uD800", NULL }, + { "unpaired leading surrogate \\uD800\\uCAFE", NULL }, + { "unpaired leading surrogate \\uD800\\uD801\\uDC02", NULL }, + { "unpaired trailing surrogate \\uDC00", NULL }, + { "backward surrogate pair \\uDC00\\uD800", NULL }, + { "noncharacter U+FDD0 \\uFDD0", NULL }, + { "noncharacter U+FDEF \\uFDEF", NULL }, + { "noncharacter U+1FFFE \\uD87F\\uDFFE", NULL }, + { "noncharacter U+10FFFF \\uDC3F\\uDFFF", NULL }, {} }; int i, j; From patchwork Fri Aug 17 15:05:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958952 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRxx2bzyz9sBx for ; Sat, 18 Aug 2018 01:31:33 +1000 (AEST) Received: from localhost ([::1]:34772 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgio-00085N-UR for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:31:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46377) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKL-00038i-4c for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001nN-7m for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:12 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57102 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001j3-CQ for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A5CBE26A95; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 61A411687A; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 57433110E360; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:27 +0200 Message-Id: <20180817150559.16243-29-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 28/60] json: Fix \uXXXX for surrogate pairs X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The JSON parser treats each half of a surrogate pair as unpaired surrogate. Fix it to recognize surrogate pairs. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Reviewed-by: Eric Blake --- qobject/json-parser.c | 60 ++++++++++++++++++++++++++++--------------- tests/check-qjson.c | 3 +-- 2 files changed, 40 insertions(+), 23 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 9985d9929b..35c201c53f 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -64,16 +64,27 @@ static void GCC_FMT_ATTR(3, 4) parse_error(JSONParserContext *ctxt, error_setg(&ctxt->err, "JSON parse error, %s", message); } -static int hex2decimal(char ch) +static int cvt4hex(const char *s) { - if (ch >= '0' && ch <= '9') { - return (ch - '0'); - } else if (ch >= 'a' && ch <= 'f') { - return 10 + (ch - 'a'); - } else if (ch >= 'A' && ch <= 'F') { - return 10 + (ch - 'A'); + int cp, i; + + cp = 0; + for (i = 0; i < 4; i++) { + if (!qemu_isxdigit(s[i])) { + return -1; + } + cp <<= 4; + if (s[i] >= '0' && s[i] <= '9') { + cp |= s[i] - '0'; + } else if (s[i] >= 'a' && s[i] <= 'f') { + cp |= 10 + s[i] - 'a'; + } else if (s[i] >= 'A' && s[i] <= 'F') { + cp |= 10 + s[i] - 'A'; + } else { + return -1; + } } - abort(); + return cp; } /** @@ -115,7 +126,8 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) const char *ptr = token->str; QString *str; char quote; - int cp, i; + const char *beg; + int cp, trailing; char *end; ssize_t len; char utf8_buf[5]; @@ -127,7 +139,7 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) while (*ptr != quote) { assert(*ptr); if (*ptr == '\\') { - ptr++; + beg = ptr++; switch (*ptr++) { case '"': qstring_append_chr(str, '"'); @@ -157,22 +169,28 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) qstring_append_chr(str, '\t'); break; case 'u': - cp = 0; - for (i = 0; i < 4; i++) { - if (!qemu_isxdigit(*ptr)) { - parse_error(ctxt, token, - "invalid hex escape sequence in string"); - goto out; + cp = cvt4hex(ptr); + ptr += 4; + + /* handle surrogate pairs */ + if (cp >= 0xD800 && cp <= 0xDBFF + && ptr[0] == '\\' && ptr[1] == 'u') { + /* leading surrogate followed by \u */ + cp = 0x10000 + ((cp & 0x3FF) << 10); + trailing = cvt4hex(ptr + 2); + if (trailing >= 0xDC00 && trailing <= 0xDFFF) { + /* followed by trailing surrogate */ + cp |= trailing & 0x3FF; + ptr += 6; + } else { + cp = -1; /* invalid */ } - cp <<= 4; - cp |= hex2decimal(*ptr); - ptr++; } if (mod_utf8_encode(utf8_buf, sizeof(utf8_buf), cp) < 0) { parse_error(ctxt, token, - "\\u%.4s is not a valid Unicode character", - ptr - 3); + "%.*s is not a valid Unicode character", + (int)(ptr - beg), beg); goto out; } qstring_append(str, utf8_buf); diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 5c94c80241..3be32f3fcb 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -63,8 +63,7 @@ static void escaped_string(void) { "double byte utf-8 \\u00A2", "double byte utf-8 \xc2\xa2" }, { "triple byte utf-8 \\u20AC", "triple byte utf-8 \xe2\x82\xac" }, { "quadruple byte utf-8 \\uD834\\uDD1E", /* U+1D11E */ - /* bug: want \xF0\x9D\x84\x9E */ - NULL }, + "quadruple byte utf-8 \xF0\x9D\x84\x9E" }, { "\\", NULL }, { "\\z", NULL }, { "\\ux", NULL }, From patchwork Fri Aug 17 15:05:28 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958960 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS5d6qNTz9sC7 for ; Sat, 18 Aug 2018 01:38:13 +1000 (AEST) Received: from localhost ([::1]:34807 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgpH-0000Ox-Gz for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:38:11 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46606) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKX-0003Jk-Jl for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001o8-AN for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:15 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56250 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001j5-Kg for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AD2875A75A; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 800AF2156712; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 5D6AB110E362; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:28 +0200 Message-Id: <20180817150559.16243-30-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 29/60] check-qjson: Fix and enable utf8_string()'s disabled part X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/check-qjson.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 3be32f3fcb..b0efddebd2 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -776,15 +776,10 @@ static void utf8_string(void) qobject_unref(str); g_free(jstr); - /* - * Parse @json_out right back - * Disabled, because qobject_from_json() is buggy, and I can't - * be bothered to add the expected incorrect results. - * FIXME Enable once these bugs have been fixed. - */ - if (0 && json_out != json_in) { + /* Parse @json_out right back, unless it has replacements */ + if (!strstr(json_out, "\\uFFFD")) { str = from_json_str(json_out, &error_abort, j); - g_assert_cmpstr(qstring_get_try_str(str), ==, utf8_out); + g_assert_cmpstr(qstring_get_try_str(str), ==, utf8_in); } } } From patchwork Fri Aug 17 15:05:29 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958980 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSVn0GpXz9sC2 for ; Sat, 18 Aug 2018 01:56:33 +1000 (AEST) Received: from localhost ([::1]:34910 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh70-0007AQ-KQ for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:56:30 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46314) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKJ-00036z-Br for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001mL-MM for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:10 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46166 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001jM-Sa for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C5A71407B39A; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8039E1049480; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 63A49110E363; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:29 +0200 Message-Id: <20180817150559.16243-31-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 30/60] json: remove useless return value from lexer/parser X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Marc-André Lureau The lexer always returns 0 when char feeding. Furthermore, none of the caller care about the return value. Signed-off-by: Marc-André Lureau Message-Id: <20180326150916.9602-10-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster Reviewed-by: Thomas Huth Signed-off-by: Markus Armbruster --- include/qapi/qmp/json-lexer.h | 4 ++-- include/qapi/qmp/json-streamer.h | 4 ++-- qobject/json-lexer.c | 23 ++++++++--------------- qobject/json-streamer.c | 8 ++++---- 4 files changed, 16 insertions(+), 23 deletions(-) diff --git a/include/qapi/qmp/json-lexer.h b/include/qapi/qmp/json-lexer.h index afee7828cd..66ccf0357c 100644 --- a/include/qapi/qmp/json-lexer.h +++ b/include/qapi/qmp/json-lexer.h @@ -47,9 +47,9 @@ struct JSONLexer void json_lexer_init(JSONLexer *lexer, JSONLexerEmitter func); -int json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size); +void json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size); -int json_lexer_flush(JSONLexer *lexer); +void json_lexer_flush(JSONLexer *lexer); void json_lexer_destroy(JSONLexer *lexer); diff --git a/include/qapi/qmp/json-streamer.h b/include/qapi/qmp/json-streamer.h index 00d8a23af8..cb808cf27d 100644 --- a/include/qapi/qmp/json-streamer.h +++ b/include/qapi/qmp/json-streamer.h @@ -36,10 +36,10 @@ typedef struct JSONMessageParser void json_message_parser_init(JSONMessageParser *parser, void (*func)(JSONMessageParser *, GQueue *)); -int json_message_parser_feed(JSONMessageParser *parser, +void json_message_parser_feed(JSONMessageParser *parser, const char *buffer, size_t size); -int json_message_parser_flush(JSONMessageParser *parser); +void json_message_parser_flush(JSONMessageParser *parser); void json_message_parser_destroy(JSONMessageParser *parser); diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index af0a7fdb8a..87cdd41f29 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -286,7 +286,7 @@ void json_lexer_init(JSONLexer *lexer, JSONLexerEmitter func) lexer->x = lexer->y = 0; } -static int json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) +static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) { int char_consumed, new_state; @@ -340,7 +340,7 @@ static int json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) g_string_truncate(lexer->token, 0); new_state = IN_START; lexer->state = new_state; - return 0; + return; default: break; } @@ -355,29 +355,22 @@ static int json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) g_string_truncate(lexer->token, 0); lexer->state = IN_START; } - - return 0; } -int json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size) +void json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size) { size_t i; for (i = 0; i < size; i++) { - int err; - - err = json_lexer_feed_char(lexer, buffer[i], false); - if (err < 0) { - return err; - } + json_lexer_feed_char(lexer, buffer[i], false); } - - return 0; } -int json_lexer_flush(JSONLexer *lexer) +void json_lexer_flush(JSONLexer *lexer) { - return lexer->state == IN_START ? 0 : json_lexer_feed_char(lexer, 0, true); + if (lexer->state != IN_START) { + json_lexer_feed_char(lexer, 0, true); + } } void json_lexer_destroy(JSONLexer *lexer) diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index c51c2021f9..78dfff2aa0 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -118,15 +118,15 @@ void json_message_parser_init(JSONMessageParser *parser, json_lexer_init(&parser->lexer, json_message_process_token); } -int json_message_parser_feed(JSONMessageParser *parser, +void json_message_parser_feed(JSONMessageParser *parser, const char *buffer, size_t size) { - return json_lexer_feed(&parser->lexer, buffer, size); + json_lexer_feed(&parser->lexer, buffer, size); } -int json_message_parser_flush(JSONMessageParser *parser) +void json_message_parser_flush(JSONMessageParser *parser) { - return json_lexer_flush(&parser->lexer); + json_lexer_flush(&parser->lexer); } void json_message_parser_destroy(JSONMessageParser *parser) From patchwork Fri Aug 17 15:05:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958947 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRsh2jmqz9sBj for ; Sat, 18 Aug 2018 01:27:52 +1000 (AEST) Received: from localhost ([::1]:34750 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgfG-0003g9-0a for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:27:50 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46324) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKJ-00037F-Ko for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001mQ-Mq for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:11 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46154 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001iz-UV for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A99E5407B390; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 806102026D6C; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 69E68110E364; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:30 +0200 Message-Id: <20180817150559.16243-32-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 31/60] json-parser: simplify and avoid JSONParserContext allocation X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Marc-André Lureau parser_context_new/free() are only used from json_parser_parse(). We can fold the code there and avoid an allocation altogether. Signed-off-by: Marc-André Lureau Message-Id: <20180719184111.5129-9-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster --- qobject/json-parser.c | 41 +++++++++-------------------------------- 1 file changed, 9 insertions(+), 32 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 35c201c53f..a25f2bfca2 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -237,33 +237,6 @@ static JSONToken *parser_context_peek_token(JSONParserContext *ctxt) return g_queue_peek_head(ctxt->buf); } -static JSONParserContext *parser_context_new(GQueue *tokens) -{ - JSONParserContext *ctxt; - - if (!tokens) { - return NULL; - } - - ctxt = g_malloc0(sizeof(JSONParserContext)); - ctxt->buf = tokens; - - return ctxt; -} - -/* to support error propagation, ctxt->err must be freed separately */ -static void parser_context_free(JSONParserContext *ctxt) -{ - if (ctxt) { - while (!g_queue_is_empty(ctxt->buf)) { - parser_context_pop_token(ctxt); - } - g_free(ctxt->current); - g_queue_free(ctxt->buf); - g_free(ctxt); - } -} - /** * Parsing rules */ @@ -575,18 +548,22 @@ QObject *json_parser_parse(GQueue *tokens, va_list *ap) QObject *json_parser_parse_err(GQueue *tokens, va_list *ap, Error **errp) { - JSONParserContext *ctxt = parser_context_new(tokens); + JSONParserContext ctxt = { .buf = tokens }; QObject *result; - if (!ctxt) { + if (!tokens) { return NULL; } - result = parse_value(ctxt, ap); + result = parse_value(&ctxt, ap); - error_propagate(errp, ctxt->err); + error_propagate(errp, ctxt.err); - parser_context_free(ctxt); + while (!g_queue_is_empty(ctxt.buf)) { + parser_context_pop_token(&ctxt); + } + g_free(ctxt.current); + g_queue_free(ctxt.buf); return result; } From patchwork Fri Aug 17 15:05:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958997 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSlk2F6Vz9s0n for ; Sat, 18 Aug 2018 02:07:46 +1000 (AEST) Received: from localhost ([::1]:35017 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhHr-0003I2-SF for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:07:43 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46623) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKc-0003O4-7V for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001p5-P7 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57106 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKG-0001jL-7D for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C925B26A5D; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 83704104948A; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 70414110E366; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:31 +0200 Message-Id: <20180817150559.16243-33-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 32/60] json: Have lexer call streamer directly X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" json_lexer_init() takes the function to process a token as an argument. It's always json_message_process_token(). Makes the code harder to understand for no actual gain. Drop the indirection. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-lexer.h | 13 +++---------- include/qapi/qmp/json-streamer.h | 3 +++ qobject/json-lexer.c | 13 ++++++++----- qobject/json-streamer.c | 6 +++--- 4 files changed, 17 insertions(+), 18 deletions(-) diff --git a/include/qapi/qmp/json-lexer.h b/include/qapi/qmp/json-lexer.h index 66ccf0357c..44bcf2ca64 100644 --- a/include/qapi/qmp/json-lexer.h +++ b/include/qapi/qmp/json-lexer.h @@ -32,20 +32,13 @@ typedef enum json_token_type { JSON_ERROR, } JSONTokenType; -typedef struct JSONLexer JSONLexer; - -typedef void (JSONLexerEmitter)(JSONLexer *, GString *, - JSONTokenType, int x, int y); - -struct JSONLexer -{ - JSONLexerEmitter *emit; +typedef struct JSONLexer { int state; GString *token; int x, y; -}; +} JSONLexer; -void json_lexer_init(JSONLexer *lexer, JSONLexerEmitter func); +void json_lexer_init(JSONLexer *lexer); void json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size); diff --git a/include/qapi/qmp/json-streamer.h b/include/qapi/qmp/json-streamer.h index cb808cf27d..7922e185a5 100644 --- a/include/qapi/qmp/json-streamer.h +++ b/include/qapi/qmp/json-streamer.h @@ -33,6 +33,9 @@ typedef struct JSONMessageParser uint64_t token_size; } JSONMessageParser; +void json_message_process_token(JSONLexer *lexer, GString *input, + JSONTokenType type, int x, int y); + void json_message_parser_init(JSONMessageParser *parser, void (*func)(JSONMessageParser *, GQueue *)); diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 87cdd41f29..0b54b1af56 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -14,6 +14,7 @@ #include "qemu/osdep.h" #include "qemu-common.h" #include "qapi/qmp/json-lexer.h" +#include "qapi/qmp/json-streamer.h" #define MAX_TOKEN_SIZE (64ULL << 20) @@ -278,9 +279,8 @@ static const uint8_t json_lexer[][256] = { }, }; -void json_lexer_init(JSONLexer *lexer, JSONLexerEmitter func) +void json_lexer_init(JSONLexer *lexer) { - lexer->emit = func; lexer->state = IN_START; lexer->token = g_string_sized_new(3); lexer->x = lexer->y = 0; @@ -316,7 +316,8 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) case JSON_FLOAT: case JSON_KEYWORD: case JSON_STRING: - lexer->emit(lexer, lexer->token, new_state, lexer->x, lexer->y); + json_message_process_token(lexer, lexer->token, new_state, + lexer->x, lexer->y); /* fall through */ case JSON_SKIP: g_string_truncate(lexer->token, 0); @@ -336,7 +337,8 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) * never a valid ASCII/UTF-8 sequence, so this should reliably * induce an error/flush state. */ - lexer->emit(lexer, lexer->token, JSON_ERROR, lexer->x, lexer->y); + json_message_process_token(lexer, lexer->token, JSON_ERROR, + lexer->x, lexer->y); g_string_truncate(lexer->token, 0); new_state = IN_START; lexer->state = new_state; @@ -351,7 +353,8 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) * this is a security consideration. */ if (lexer->token->len > MAX_TOKEN_SIZE) { - lexer->emit(lexer, lexer->token, lexer->state, lexer->x, lexer->y); + json_message_process_token(lexer, lexer->token, lexer->state, + lexer->x, lexer->y); g_string_truncate(lexer->token, 0); lexer->state = IN_START; } diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 78dfff2aa0..9f57ebf2bd 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -34,8 +34,8 @@ static void json_message_free_tokens(JSONMessageParser *parser) } } -static void json_message_process_token(JSONLexer *lexer, GString *input, - JSONTokenType type, int x, int y) +void json_message_process_token(JSONLexer *lexer, GString *input, + JSONTokenType type, int x, int y) { JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer); JSONToken *token; @@ -115,7 +115,7 @@ void json_message_parser_init(JSONMessageParser *parser, parser->tokens = g_queue_new(); parser->token_size = 0; - json_lexer_init(&parser->lexer, json_message_process_token); + json_lexer_init(&parser->lexer); } void json_message_parser_feed(JSONMessageParser *parser, From patchwork Fri Aug 17 15:05:32 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958976 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSQx74Z9z9sC2 for ; Sat, 18 Aug 2018 01:53:13 +1000 (AEST) Received: from localhost ([::1]:34891 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh3n-0006ea-Hz for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:53:11 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46626) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKc-0003O7-7l for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001oQ-H7 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46172 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001jk-Pa for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 21A03407B393; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B1E332026D6C; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 767B8110E368; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:32 +0200 Message-Id: <20180817150559.16243-34-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 33/60] json: Redesign the callback to consume JSON values X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The classical way to structure parser and lexer is to have the client call the parser to get an abstract syntax tree, the parser call the lexer to get the next token, and the lexer call some function to get input characters. Another way to structure them would be to have the client feed characters to the lexer, the lexer feed tokens to the parser, and the parser feed abstract syntax trees to some callback provided by the client. This way is more easily integrated into an event loop that dispatches input characters as they arrive. Our JSON parser is kind of between the two. The lexer feeds tokens to a "streamer" instead of a real parser. The streamer accumulates tokens until it got the sequence of tokens that comprise a single JSON value (it counts curly braces and square brackets to decide). It feeds those token sequences to a callback provided by the client. The callback passes each token sequence to the parser, and gets back an abstract syntax tree. I figure it was done that way to make a straightforward recursive descent parser possible. "Get next token" becomes "pop the first token off the token sequence". Drawback: we need to store a complete token sequence. Each token eats 13 + input characters + malloc overhead bytes. Observations: 1. This is not the only way to use recursive descent. If we replaced "get next token" by a coroutine yield, we could do without a streamer. 2. The lexer reports errors by passing a JSON_ERROR token to the streamer. This communicates the offending input characters and their location, but no more. 3. The streamer reports errors by passing a null token sequence to the callback. The (already poor) lexical error information is thrown away. 4. Having the callback receive a token sequence duplicates the code to convert token sequence to abstract syntax tree in every callback. 5. Known bug: the streamer silently drops incomplete token sequences. This commit rectifies 4. by lifting the call of the parser from the callbacks into the streamer. Later commits will address 3. and 5. The lifting removes a bug from qjson.c's parse_json(): it passed a pointer to a non-null Error * in certain cases, as demonstrated by check-qjson.c. json_parser_parse() is now unused. It's a stupid wrapper around json_parser_parse_err(). Drop it, and rename json_parser_parse_err() to json_parser_parse(). Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-parser.h | 3 +-- include/qapi/qmp/json-streamer.h | 8 ++++++-- monitor.c | 18 ++++++++---------- qapi/qmp-dispatch.c | 1 - qga/main.c | 12 +++--------- qobject/json-parser.c | 7 +------ qobject/json-streamer.c | 19 +++++++++++-------- qobject/qjson.c | 14 +++++--------- tests/check-qjson.c | 1 - tests/libqtest.c | 10 ++++------ 10 files changed, 39 insertions(+), 54 deletions(-) diff --git a/include/qapi/qmp/json-parser.h b/include/qapi/qmp/json-parser.h index 102f5c0068..a34209db7a 100644 --- a/include/qapi/qmp/json-parser.h +++ b/include/qapi/qmp/json-parser.h @@ -16,7 +16,6 @@ #include "qemu-common.h" -QObject *json_parser_parse(GQueue *tokens, va_list *ap); -QObject *json_parser_parse_err(GQueue *tokens, va_list *ap, Error **errp); +QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp); #endif diff --git a/include/qapi/qmp/json-streamer.h b/include/qapi/qmp/json-streamer.h index 7922e185a5..e162fd01da 100644 --- a/include/qapi/qmp/json-streamer.h +++ b/include/qapi/qmp/json-streamer.h @@ -25,7 +25,9 @@ typedef struct JSONToken { typedef struct JSONMessageParser { - void (*emit)(struct JSONMessageParser *parser, GQueue *tokens); + void (*emit)(void *opaque, QObject *json, Error *err); + void *opaque; + va_list *ap; JSONLexer lexer; int brace_count; int bracket_count; @@ -37,7 +39,9 @@ void json_message_process_token(JSONLexer *lexer, GString *input, JSONTokenType type, int x, int y); void json_message_parser_init(JSONMessageParser *parser, - void (*func)(JSONMessageParser *, GQueue *)); + void (*emit)(void *opaque, QObject *json, + Error *err), + void *opaque, va_list *ap); void json_message_parser_feed(JSONMessageParser *parser, const char *buffer, size_t size); diff --git a/monitor.c b/monitor.c index a1999e396c..392659324f 100644 --- a/monitor.c +++ b/monitor.c @@ -59,7 +59,6 @@ #include "qapi/qmp/qstring.h" #include "qapi/qmp/qjson.h" #include "qapi/qmp/json-streamer.h" -#include "qapi/qmp/json-parser.h" #include "qapi/qmp/qlist.h" #include "qom/object_interfaces.h" #include "trace-root.h" @@ -4245,18 +4244,15 @@ static void monitor_qmp_bh_dispatcher(void *data) #define QMP_REQ_QUEUE_LEN_MAX (8) -static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens) +static void handle_qmp_command(void *opaque, QObject *req, Error *err) { - QObject *req, *id = NULL; + Monitor *mon = opaque; + QObject *id = NULL; QDict *qdict; - MonitorQMP *mon_qmp = container_of(parser, MonitorQMP, parser); - Monitor *mon = container_of(mon_qmp, Monitor, qmp); - Error *err = NULL; QMPRequest *req_obj; - req = json_parser_parse_err(tokens, NULL, &err); if (!req && !err) { - /* json_parser_parse_err() sucks: can fail without setting @err */ + /* json_parser_parse() sucks: can fail without setting @err */ error_setg(&err, QERR_JSON_PARSING); } @@ -4454,7 +4450,8 @@ static void monitor_qmp_event(void *opaque, int event) monitor_qmp_response_flush(mon); monitor_qmp_cleanup_queues(mon); json_message_parser_destroy(&mon->qmp.parser); - json_message_parser_init(&mon->qmp.parser, handle_qmp_command); + json_message_parser_init(&mon->qmp.parser, handle_qmp_command, + mon, NULL); mon_refcount--; monitor_fdsets_cleanup(); break; @@ -4672,7 +4669,8 @@ void monitor_init(Chardev *chr, int flags) if (monitor_is_qmp(mon)) { qemu_chr_fe_set_echo(&mon->chr, true); - json_message_parser_init(&mon->qmp.parser, handle_qmp_command); + json_message_parser_init(&mon->qmp.parser, handle_qmp_command, + mon, NULL); if (mon->use_io_thread) { /* * Make sure the old iowatch is gone. It's possible when diff --git a/qapi/qmp-dispatch.c b/qapi/qmp-dispatch.c index 6f2d466596..d8da1a62de 100644 --- a/qapi/qmp-dispatch.c +++ b/qapi/qmp-dispatch.c @@ -14,7 +14,6 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "qapi/qmp/dispatch.h" -#include "qapi/qmp/json-parser.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qjson.h" #include "qapi/qmp/qbool.h" diff --git a/qga/main.c b/qga/main.c index 87372d40ef..2fc49d00d8 100644 --- a/qga/main.c +++ b/qga/main.c @@ -19,7 +19,6 @@ #include #endif #include "qapi/qmp/json-streamer.h" -#include "qapi/qmp/json-parser.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qjson.h" #include "qapi/qmp/qstring.h" @@ -597,18 +596,13 @@ static void process_command(GAState *s, QDict *req) } /* handle requests/control events coming in over the channel */ -static void process_event(JSONMessageParser *parser, GQueue *tokens) +static void process_event(void *opaque, QObject *obj, Error *err) { - GAState *s = container_of(parser, GAState, parser); - QObject *obj; + GAState *s = opaque; QDict *req, *rsp; - Error *err = NULL; int ret; - g_assert(s && parser); - g_debug("process_event: called"); - obj = json_parser_parse_err(tokens, NULL, &err); if (err) { goto err; } @@ -1320,7 +1314,7 @@ static int run_agent(GAState *s, GAConfig *config, int socket_activation) s->command_state = ga_command_state_new(); ga_command_state_init(s, s->command_state); ga_command_state_init_all(s->command_state); - json_message_parser_init(&s->parser, process_event); + json_message_parser_init(&s->parser, process_event, s, NULL); #ifndef _WIN32 if (!register_signal_handlers()) { diff --git a/qobject/json-parser.c b/qobject/json-parser.c index a25f2bfca2..f2646dce84 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -541,12 +541,7 @@ static QObject *parse_value(JSONParserContext *ctxt, va_list *ap) } } -QObject *json_parser_parse(GQueue *tokens, va_list *ap) -{ - return json_parser_parse_err(tokens, ap, NULL); -} - -QObject *json_parser_parse_err(GQueue *tokens, va_list *ap, Error **errp) +QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp) { JSONParserContext ctxt = { .buf = tokens }; QObject *result; diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 9f57ebf2bd..7fd0ff8756 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -14,6 +14,7 @@ #include "qemu/osdep.h" #include "qemu-common.h" #include "qapi/qmp/json-lexer.h" +#include "qapi/qmp/json-parser.h" #include "qapi/qmp/json-streamer.h" #define MAX_TOKEN_SIZE (64ULL << 20) @@ -38,8 +39,9 @@ void json_message_process_token(JSONLexer *lexer, GString *input, JSONTokenType type, int x, int y) { JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer); + Error *err = NULL; JSONToken *token; - GQueue *tokens; + QObject *json; switch (type) { case JSON_LCURLY: @@ -97,19 +99,20 @@ out_emit: /* send current list of tokens to parser and reset tokenizer */ parser->brace_count = 0; parser->bracket_count = 0; - /* parser->emit takes ownership of parser->tokens. Remove our own - * reference to parser->tokens before handing it out to parser->emit. - */ - tokens = parser->tokens; + json = json_parser_parse(parser->tokens, parser->ap, &err); parser->tokens = g_queue_new(); - parser->emit(parser, tokens); parser->token_size = 0; + parser->emit(parser->opaque, json, err); } void json_message_parser_init(JSONMessageParser *parser, - void (*func)(JSONMessageParser *, GQueue *)) + void (*emit)(void *opaque, QObject *json, + Error *err), + void *opaque, va_list *ap) { - parser->emit = func; + parser->emit = emit; + parser->opaque = opaque; + parser->ap = ap; parser->brace_count = 0; parser->bracket_count = 0; parser->tokens = g_queue_new(); diff --git a/qobject/qjson.c b/qobject/qjson.c index ab4040f235..7395556069 100644 --- a/qobject/qjson.c +++ b/qobject/qjson.c @@ -13,8 +13,6 @@ #include "qemu/osdep.h" #include "qapi/error.h" -#include "qapi/qmp/json-lexer.h" -#include "qapi/qmp/json-parser.h" #include "qapi/qmp/json-streamer.h" #include "qapi/qmp/qjson.h" #include "qapi/qmp/qbool.h" @@ -27,16 +25,16 @@ typedef struct JSONParsingState { JSONMessageParser parser; - va_list *ap; QObject *result; Error *err; } JSONParsingState; -static void parse_json(JSONMessageParser *parser, GQueue *tokens) +static void consume_json(void *opaque, QObject *json, Error *err) { - JSONParsingState *s = container_of(parser, JSONParsingState, parser); + JSONParsingState *s = opaque; - s->result = json_parser_parse_err(tokens, s->ap, &s->err); + s->result = json; + error_propagate(&s->err, err); } /* @@ -54,9 +52,7 @@ static QObject *qobject_from_jsonv(const char *string, va_list *ap, { JSONParsingState state = {}; - state.ap = ap; - - json_message_parser_init(&state.parser, parse_json); + json_message_parser_init(&state.parser, consume_json, &state, ap); json_message_parser_feed(&state.parser, string, strlen(string)); json_message_parser_flush(&state.parser); json_message_parser_destroy(&state.parser); diff --git a/tests/check-qjson.c b/tests/check-qjson.c index b0efddebd2..8cccac838b 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1438,7 +1438,6 @@ static void multiple_values(void) qobject_unref(obj); /* BUG simultaneously succeeds and fails */ - /* BUG calls json_parser_parse() with errp pointing to non-null */ obj = qobject_from_json("} true", &err); g_assert(qbool_get_bool(qobject_to(QBool, obj))); error_free_or_abort(&err); diff --git a/tests/libqtest.c b/tests/libqtest.c index a7ad09fc86..e17fe4fbd2 100644 --- a/tests/libqtest.c +++ b/tests/libqtest.c @@ -21,9 +21,9 @@ #include #include "libqtest.h" +#include "qemu-common.h" #include "qemu/cutils.h" #include "qapi/error.h" -#include "qapi/qmp/json-parser.h" #include "qapi/qmp/json-streamer.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qjson.h" @@ -446,12 +446,10 @@ typedef struct { QDict *response; } QMPResponseParser; -static void qmp_response(JSONMessageParser *parser, GQueue *tokens) +static void qmp_response(void *opaque, QObject *obj, Error *err) { - QMPResponseParser *qmp = container_of(parser, QMPResponseParser, parser); - QObject *obj; + QMPResponseParser *qmp = opaque; - obj = json_parser_parse(tokens, NULL); if (!obj) { fprintf(stderr, "QMP JSON response parsing failed\n"); abort(); @@ -468,7 +466,7 @@ QDict *qmp_fd_receive(int fd) bool log = getenv("QTEST_LOG") != NULL; qmp.response = NULL; - json_message_parser_init(&qmp.parser, qmp_response); + json_message_parser_init(&qmp.parser, qmp_response, &qmp, NULL); while (!qmp.response) { ssize_t len; char c; From patchwork Fri Aug 17 15:05:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958934 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRXT1TT1z9sBx for ; Sat, 18 Aug 2018 01:12:56 +1000 (AEST) Received: from localhost ([::1]:34646 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgQm-00017z-NO for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:12:52 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46302) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKI-00036J-Nj for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001lT-64 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:10 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56258 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKE-0001ja-Ff for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:06 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DB6132BDBF; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B442817305; Fri, 17 Aug 2018 15:06:05 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 7D67C110E36E; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:33 +0200 Message-Id: <20180817150559.16243-35-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:05 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 34/60] json: Don't pass null @tokens to json_parser_parse() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" json_parser_parse() normally returns the QObject on success. Except it returns null when its @tokens argument is null. Its only caller json_message_process_token() passes null @tokens when emitting a lexical error. The call is a rather opaque way to say json = NULL then. Simplify matters by lifting the assignment to json out of the emit path: initialize json to null, set it to the value of json_parser_parse() when there's no lexical error. Drop the special case from json_parser_parse(). Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 4 ---- qobject/json-streamer.c | 25 ++++++++++++------------- 2 files changed, 12 insertions(+), 17 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index f2646dce84..866f7e3f14 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -546,10 +546,6 @@ QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp) JSONParserContext ctxt = { .buf = tokens }; QObject *result; - if (!tokens) { - return NULL; - } - result = parse_value(&ctxt, ap); error_propagate(errp, ctxt.err); diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 7fd0ff8756..0c33186e8e 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -39,9 +39,9 @@ void json_message_process_token(JSONLexer *lexer, GString *input, JSONTokenType type, int x, int y) { JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer); + QObject *json = NULL; Error *err = NULL; JSONToken *token; - QObject *json; switch (type) { case JSON_LCURLY: @@ -72,34 +72,33 @@ void json_message_process_token(JSONLexer *lexer, GString *input, g_queue_push_tail(parser->tokens, token); if (type == JSON_ERROR) { - goto out_emit_bad; - } else if (parser->brace_count < 0 || + goto out_emit; + } + + if (parser->brace_count < 0 || parser->bracket_count < 0 || (parser->brace_count == 0 && parser->bracket_count == 0)) { + json = json_parser_parse(parser->tokens, parser->ap, &err); + parser->tokens = NULL; goto out_emit; - } else if (parser->token_size > MAX_TOKEN_SIZE || + } + + if (parser->token_size > MAX_TOKEN_SIZE || g_queue_get_length(parser->tokens) > MAX_TOKEN_COUNT || parser->bracket_count + parser->brace_count > MAX_NESTING) { /* Security consideration, we limit total memory allocated per object * and the maximum recursion depth that a message can force. */ - goto out_emit_bad; + goto out_emit; } return; -out_emit_bad: - /* - * Clear out token list and tell the parser to emit an error - * indication by passing it a NULL list - */ - json_message_free_tokens(parser); out_emit: - /* send current list of tokens to parser and reset tokenizer */ parser->brace_count = 0; parser->bracket_count = 0; - json = json_parser_parse(parser->tokens, parser->ap, &err); + json_message_free_tokens(parser); parser->tokens = g_queue_new(); parser->token_size = 0; parser->emit(parser->opaque, json, err); From patchwork Fri Aug 17 15:05:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958964 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS965Np1z9sC7 for ; Sat, 18 Aug 2018 01:41:14 +1000 (AEST) Received: from localhost ([::1]:34824 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgsC-0002sB-Di for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:41:12 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46631) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKc-0003OA-7n for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001ox-N4 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56274 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKG-0001kj-3M for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4DBAA5A759; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 220AA2166BA5; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 837C7110E370; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:34 +0200 Message-Id: <20180817150559.16243-36-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 35/60] json: Don't create JSON_ERROR tokens that won't be used X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-streamer.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 0c33186e8e..fa595a8761 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -56,6 +56,8 @@ void json_message_process_token(JSONLexer *lexer, GString *input, case JSON_RSQUARE: parser->bracket_count--; break; + case JSON_ERROR: + goto out_emit; default: break; } @@ -71,10 +73,6 @@ void json_message_process_token(JSONLexer *lexer, GString *input, g_queue_push_tail(parser->tokens, token); - if (type == JSON_ERROR) { - goto out_emit; - } - if (parser->brace_count < 0 || parser->bracket_count < 0 || (parser->brace_count == 0 && From patchwork Fri Aug 17 15:05:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958943 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRlN2cxNz9sBv for ; Sat, 18 Aug 2018 01:22:24 +1000 (AEST) Received: from localhost ([::1]:34721 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgZy-0005AP-0u for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:22:22 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46284) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKI-00035z-9h for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001mE-Lg for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:10 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46176 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001kC-0o for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 68B81407B396; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 24F5F1687A; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 89A9D1169072; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:35 +0200 Message-Id: <20180817150559.16243-37-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 36/60] json: Rename token JSON_ESCAPE & friends to JSON_INTERPOL X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The JSON parser optionally supports interpolation. The code calls it "escape". Awkward, because it uses the same term for escape sequences within strings. The latter usage is consistent with RFC 7159 "The JavaScript Object Notation (JSON) Data Interchange Format" and ISO C. Call the former "interpolation" instead. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-lexer.h | 2 +- qobject/json-lexer.c | 64 +++++++++++++++++------------------ qobject/json-parser.c | 8 ++--- 3 files changed, 37 insertions(+), 37 deletions(-) diff --git a/include/qapi/qmp/json-lexer.h b/include/qapi/qmp/json-lexer.h index 44bcf2ca64..ff3a6f80f0 100644 --- a/include/qapi/qmp/json-lexer.h +++ b/include/qapi/qmp/json-lexer.h @@ -27,7 +27,7 @@ typedef enum json_token_type { JSON_FLOAT, JSON_KEYWORD, JSON_STRING, - JSON_ESCAPE, + JSON_INTERPOL, JSON_SKIP, JSON_ERROR, } JSONTokenType; diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 0b54b1af56..5b1f720331 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -115,12 +115,12 @@ enum json_lexer_state { IN_NONZERO_NUMBER, IN_NEG_NONZERO_NUMBER, IN_KEYWORD, - IN_ESCAPE, - IN_ESCAPE_L, - IN_ESCAPE_LL, - IN_ESCAPE_I, - IN_ESCAPE_I6, - IN_ESCAPE_I64, + IN_INTERPOL, + IN_INTERPOL_L, + IN_INTERPOL_LL, + IN_INTERPOL_I, + IN_INTERPOL_I6, + IN_INTERPOL_I64, IN_WHITESPACE, IN_START, }; @@ -221,40 +221,40 @@ static const uint8_t json_lexer[][256] = { ['\n'] = IN_WHITESPACE, }, - /* escape */ - [IN_ESCAPE_LL] = { - ['d'] = JSON_ESCAPE, - ['u'] = JSON_ESCAPE, + /* interpolation */ + [IN_INTERPOL_LL] = { + ['d'] = JSON_INTERPOL, + ['u'] = JSON_INTERPOL, }, - [IN_ESCAPE_L] = { - ['d'] = JSON_ESCAPE, - ['l'] = IN_ESCAPE_LL, - ['u'] = JSON_ESCAPE, + [IN_INTERPOL_L] = { + ['d'] = JSON_INTERPOL, + ['l'] = IN_INTERPOL_LL, + ['u'] = JSON_INTERPOL, }, - [IN_ESCAPE_I64] = { - ['d'] = JSON_ESCAPE, - ['u'] = JSON_ESCAPE, + [IN_INTERPOL_I64] = { + ['d'] = JSON_INTERPOL, + ['u'] = JSON_INTERPOL, }, - [IN_ESCAPE_I6] = { - ['4'] = IN_ESCAPE_I64, + [IN_INTERPOL_I6] = { + ['4'] = IN_INTERPOL_I64, }, - [IN_ESCAPE_I] = { - ['6'] = IN_ESCAPE_I6, + [IN_INTERPOL_I] = { + ['6'] = IN_INTERPOL_I6, }, - [IN_ESCAPE] = { - ['d'] = JSON_ESCAPE, - ['i'] = JSON_ESCAPE, - ['p'] = JSON_ESCAPE, - ['s'] = JSON_ESCAPE, - ['u'] = JSON_ESCAPE, - ['f'] = JSON_ESCAPE, - ['l'] = IN_ESCAPE_L, - ['I'] = IN_ESCAPE_I, + [IN_INTERPOL] = { + ['d'] = JSON_INTERPOL, + ['i'] = JSON_INTERPOL, + ['p'] = JSON_INTERPOL, + ['s'] = JSON_INTERPOL, + ['u'] = JSON_INTERPOL, + ['f'] = JSON_INTERPOL, + ['l'] = IN_INTERPOL_L, + ['I'] = IN_INTERPOL_I, }, /* top level rule */ @@ -271,7 +271,7 @@ static const uint8_t json_lexer[][256] = { [','] = JSON_COMMA, [':'] = JSON_COLON, ['a' ... 'z'] = IN_KEYWORD, - ['%'] = IN_ESCAPE, + ['%'] = IN_INTERPOL, [' '] = IN_WHITESPACE, ['\t'] = IN_WHITESPACE, ['\r'] = IN_WHITESPACE, @@ -311,7 +311,7 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) case JSON_RSQUARE: case JSON_COLON: case JSON_COMMA: - case JSON_ESCAPE: + case JSON_INTERPOL: case JSON_INTEGER: case JSON_FLOAT: case JSON_KEYWORD: diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 866f7e3f14..1af1c1210c 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -423,7 +423,7 @@ static QObject *parse_keyword(JSONParserContext *ctxt) return NULL; } -static QObject *parse_escape(JSONParserContext *ctxt, va_list *ap) +static QObject *parse_interpolation(JSONParserContext *ctxt, va_list *ap) { JSONToken *token; @@ -432,7 +432,7 @@ static QObject *parse_escape(JSONParserContext *ctxt, va_list *ap) } token = parser_context_pop_token(ctxt); - assert(token && token->type == JSON_ESCAPE); + assert(token && token->type == JSON_INTERPOL); if (!strcmp(token->str, "%p")) { return va_arg(*ap, QObject *); @@ -527,8 +527,8 @@ static QObject *parse_value(JSONParserContext *ctxt, va_list *ap) return parse_object(ctxt, ap); case JSON_LSQUARE: return parse_array(ctxt, ap); - case JSON_ESCAPE: - return parse_escape(ctxt, ap); + case JSON_INTERPOL: + return parse_interpolation(ctxt, ap); case JSON_INTEGER: case JSON_FLOAT: case JSON_STRING: From patchwork Fri Aug 17 15:05:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958968 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSDN12rrz9sC2 for ; Sat, 18 Aug 2018 01:44:04 +1000 (AEST) Received: from localhost ([::1]:34836 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqguv-0005De-M0 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:44:01 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46624) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKc-0003O5-7e for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001oW-GM for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46184 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001kk-RX for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8B5BF407B398; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4051E21568A5; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 8FC2B1169081; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:36 +0200 Message-Id: <20180817150559.16243-38-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 37/60] json: Treat unwanted interpolation as lexical error X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The JSON parser optionally supports interpolation. The lexer recognizes interpolation tokens unconditionally. The parser rejects them when interpolation is disabled, in parse_interpolation(). However, it neglects to set an error then, which can make json_parser_parse() fail without setting an error. Move the check for unwanted interpolation from the parser's parse_interpolation() into the lexer's finite state machine. When interpolation is disabled, '%' is now handled like any other unexpected character. The next commit will improve how such lexical errors are handled. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-lexer.h | 4 ++-- qobject/json-lexer.c | 30 ++++++++++++++++++------------ qobject/json-parser.c | 4 ---- qobject/json-streamer.c | 2 +- tests/qmp-test.c | 4 ++++ 5 files changed, 25 insertions(+), 19 deletions(-) diff --git a/include/qapi/qmp/json-lexer.h b/include/qapi/qmp/json-lexer.h index ff3a6f80f0..5586d12f26 100644 --- a/include/qapi/qmp/json-lexer.h +++ b/include/qapi/qmp/json-lexer.h @@ -33,12 +33,12 @@ typedef enum json_token_type { } JSONTokenType; typedef struct JSONLexer { - int state; + int start_state, state; GString *token; int x, y; } JSONLexer; -void json_lexer_init(JSONLexer *lexer); +void json_lexer_init(JSONLexer *lexer, bool enable_interpolation); void json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size); diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 5b1f720331..cf15266cbe 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -92,7 +92,7 @@ * Like double-quoted strings, except they're delimited by %x27 * (apostrophe) instead of %x22 (quotation mark), and can't contain * unescaped apostrophe, but can contain unescaped quotation mark. - * - Interpolation: + * - Interpolation, if enabled: * interpolation = %((l|ll|I64)[du]|[ipsf]) * * Note: @@ -123,9 +123,11 @@ enum json_lexer_state { IN_INTERPOL_I64, IN_WHITESPACE, IN_START, + IN_START_INTERPOL, /* must be IN_START + 1 */ }; -QEMU_BUILD_BUG_ON((int)JSON_MIN <= (int)IN_START); +QEMU_BUILD_BUG_ON((int)JSON_MIN <= (int)IN_START_INTERPOL); +QEMU_BUILD_BUG_ON(IN_START_INTERPOL != IN_START + 1); #define TERMINAL(state) [0 ... 0x7F] = (state) @@ -257,8 +259,12 @@ static const uint8_t json_lexer[][256] = { ['I'] = IN_INTERPOL_I, }, - /* top level rule */ - [IN_START] = { + /* + * Two start states: + * - IN_START recognizes JSON tokens with our string extensions + * - IN_START_INTERPOL additionally recognizes interpolation. + */ + [IN_START ... IN_START_INTERPOL] = { ['"'] = IN_DQ_STRING, ['\''] = IN_SQ_STRING, ['0'] = IN_ZERO, @@ -271,17 +277,18 @@ static const uint8_t json_lexer[][256] = { [','] = JSON_COMMA, [':'] = JSON_COLON, ['a' ... 'z'] = IN_KEYWORD, - ['%'] = IN_INTERPOL, [' '] = IN_WHITESPACE, ['\t'] = IN_WHITESPACE, ['\r'] = IN_WHITESPACE, ['\n'] = IN_WHITESPACE, }, + [IN_START_INTERPOL]['%'] = IN_INTERPOL, }; -void json_lexer_init(JSONLexer *lexer) +void json_lexer_init(JSONLexer *lexer, bool enable_interpolation) { - lexer->state = IN_START; + lexer->start_state = lexer->state = enable_interpolation + ? IN_START_INTERPOL : IN_START; lexer->token = g_string_sized_new(3); lexer->x = lexer->y = 0; } @@ -321,7 +328,7 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) /* fall through */ case JSON_SKIP: g_string_truncate(lexer->token, 0); - new_state = IN_START; + new_state = lexer->start_state; break; case IN_ERROR: /* XXX: To avoid having previous bad input leaving the parser in an @@ -340,8 +347,7 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) json_message_process_token(lexer, lexer->token, JSON_ERROR, lexer->x, lexer->y); g_string_truncate(lexer->token, 0); - new_state = IN_START; - lexer->state = new_state; + lexer->state = lexer->start_state; return; default: break; @@ -356,7 +362,7 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) json_message_process_token(lexer, lexer->token, lexer->state, lexer->x, lexer->y); g_string_truncate(lexer->token, 0); - lexer->state = IN_START; + lexer->state = lexer->start_state; } } @@ -371,7 +377,7 @@ void json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size) void json_lexer_flush(JSONLexer *lexer) { - if (lexer->state != IN_START) { + if (lexer->state != lexer->start_state) { json_lexer_feed_char(lexer, 0, true); } } diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 1af1c1210c..56bbfe6810 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -427,10 +427,6 @@ static QObject *parse_interpolation(JSONParserContext *ctxt, va_list *ap) { JSONToken *token; - if (ap == NULL) { - return NULL; - } - token = parser_context_pop_token(ctxt); assert(token && token->type == JSON_INTERPOL); diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index fa595a8761..a373e0114a 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -115,7 +115,7 @@ void json_message_parser_init(JSONMessageParser *parser, parser->tokens = g_queue_new(); parser->token_size = 0; - json_lexer_init(&parser->lexer); + json_lexer_init(&parser->lexer, !!ap); } void json_message_parser_feed(JSONMessageParser *parser, diff --git a/tests/qmp-test.c b/tests/qmp-test.c index 7b3ba17c4a..4ae2245484 100644 --- a/tests/qmp-test.c +++ b/tests/qmp-test.c @@ -94,6 +94,10 @@ static void test_malformed(QTestState *qts) /* lexical error: interpolation */ qtest_qmp_send_raw(qts, "%%p\n"); + /* two errors, one for "%", one for "p" */ + resp = qtest_qmp_receive(qts); + g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); + qobject_unref(resp); resp = qtest_qmp_receive(qts); g_assert_cmpstr(get_error_class(resp), ==, "GenericError"); qobject_unref(resp); From patchwork Fri Aug 17 15:05:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958982 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSYt73szz9sCP for ; Sat, 18 Aug 2018 01:59:14 +1000 (AEST) Received: from localhost ([::1]:34922 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh9c-00010p-Ji for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:59:12 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46333) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKK-00037m-52 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001n1-2F for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:11 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56272 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001kh-8F for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8533A2BCA3; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3F15C10DCF6D; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 9697D1169083; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:37 +0200 Message-Id: <20180817150559.16243-39-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 38/60] json: Pass lexical errors and limit violations to callback X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The callback to consume JSON values takes QObject *json, Error *err. If both are null, the callback is supposed to make up an error by itself. This sucks. qjson.c's consume_json() neglects to do so, which makes qobject_from_json() null instead of failing. I consider that a bug. The culprit is json_message_process_token(): it passes two null pointers when it runs into a lexical error or a limit violation. Fix it to pass a proper Error object then. Update the callbacks: * monitor.c's handle_qmp_command(): the code to make up an error is now dead, drop it. * qga/main.c's process_event(): lumps the "both null" case together with the "not a JSON object" case. The former is now gone. The error message "Invalid JSON syntax" is misleading for the latter. Improve it to "Input must be a JSON object". * qobject/qjson.c's consume_json(): no update; check-qjson demonstrates qobject_from_json() now sets an error on lexical errors, but still doesn't on some other errors. * tests/libqtest.c's qmp_response(): the Error object is now reliable, so use it to improve the error message. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/qerror.h | 3 --- monitor.c | 5 +---- qga/main.c | 3 ++- qobject/json-streamer.c | 22 ++++++++++++++++------ tests/check-qjson.c | 15 ++++++++------- tests/libqtest.c | 7 +++++-- 6 files changed, 32 insertions(+), 23 deletions(-) diff --git a/include/qapi/qmp/qerror.h b/include/qapi/qmp/qerror.h index c82360f429..145571f618 100644 --- a/include/qapi/qmp/qerror.h +++ b/include/qapi/qmp/qerror.h @@ -61,9 +61,6 @@ #define QERR_IO_ERROR \ "An IO error has occurred" -#define QERR_JSON_PARSING \ - "Invalid JSON syntax" - #define QERR_MIGRATION_ACTIVE \ "There's a migration process in progress" diff --git a/monitor.c b/monitor.c index 392659324f..c99dc4737d 100644 --- a/monitor.c +++ b/monitor.c @@ -4251,10 +4251,7 @@ static void handle_qmp_command(void *opaque, QObject *req, Error *err) QDict *qdict; QMPRequest *req_obj; - if (!req && !err) { - /* json_parser_parse() sucks: can fail without setting @err */ - error_setg(&err, QERR_JSON_PARSING); - } + assert(!req != !err); qdict = qobject_to(QDict, req); if (qdict) { diff --git a/qga/main.c b/qga/main.c index 2fc49d00d8..b74e1241ef 100644 --- a/qga/main.c +++ b/qga/main.c @@ -603,12 +603,13 @@ static void process_event(void *opaque, QObject *obj, Error *err) int ret; g_debug("process_event: called"); + assert(!obj != !err); if (err) { goto err; } req = qobject_to(QDict, obj); if (!req) { - error_setg(&err, QERR_JSON_PARSING); + error_setg(&err, "Input must be a JSON object"); goto err; } if (!qdict_haskey(req, "execute")) { diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index a373e0114a..e372ecc895 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -13,6 +13,7 @@ #include "qemu/osdep.h" #include "qemu-common.h" +#include "qapi/error.h" #include "qapi/qmp/json-lexer.h" #include "qapi/qmp/json-parser.h" #include "qapi/qmp/json-streamer.h" @@ -57,6 +58,7 @@ void json_message_process_token(JSONLexer *lexer, GString *input, parser->bracket_count--; break; case JSON_ERROR: + error_setg(&err, "JSON parse error, stray '%s'", input->str); goto out_emit; default: break; @@ -82,12 +84,20 @@ void json_message_process_token(JSONLexer *lexer, GString *input, goto out_emit; } - if (parser->token_size > MAX_TOKEN_SIZE || - g_queue_get_length(parser->tokens) > MAX_TOKEN_COUNT || - parser->bracket_count + parser->brace_count > MAX_NESTING) { - /* Security consideration, we limit total memory allocated per object - * and the maximum recursion depth that a message can force. - */ + /* + * Security consideration, we limit total memory allocated per object + * and the maximum recursion depth that a message can force. + */ + if (parser->token_size > MAX_TOKEN_SIZE) { + error_setg(&err, "JSON token size limit exceeded"); + goto out_emit; + } + if (g_queue_get_length(parser->tokens) > MAX_TOKEN_COUNT) { + error_setg(&err, "JSON token count limit exceeded"); + goto out_emit; + } + if (parser->bracket_count + parser->brace_count > MAX_NESTING) { + error_setg(&err, "JSON nesting depth limit exceeded"); goto out_emit; } diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 8cccac838b..3bd216f357 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1021,6 +1021,7 @@ static void interpolation_unknown(void) } g_test_trap_subprocess(NULL, 0, 0); g_test_trap_assert_failed(); + g_test_trap_assert_stderr("*Unexpected error*stray '%x'*"); } static void interpolation_string(void) @@ -1296,11 +1297,11 @@ static void junk_input(void) QObject *obj; obj = qobject_from_json("@", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); obj = qobject_from_json("{\x01", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); obj = qobject_from_json("[0\xFF]", &err); @@ -1308,11 +1309,11 @@ static void junk_input(void) g_assert(obj == NULL); obj = qobject_from_json("00", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); obj = qobject_from_json("[1e", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); obj = qobject_from_json("truer", &err); @@ -1324,7 +1325,7 @@ static void unterminated_string(void) { Error *err = NULL; QObject *obj = qobject_from_json("\"abc", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); } @@ -1332,7 +1333,7 @@ static void unterminated_sq_string(void) { Error *err = NULL; QObject *obj = qobject_from_json("'abc", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); } @@ -1340,7 +1341,7 @@ static void unterminated_escape(void) { Error *err = NULL; QObject *obj = qobject_from_json("\"abc\\\"", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); } diff --git a/tests/libqtest.c b/tests/libqtest.c index e17fe4fbd2..6a9151eebd 100644 --- a/tests/libqtest.c +++ b/tests/libqtest.c @@ -450,8 +450,11 @@ static void qmp_response(void *opaque, QObject *obj, Error *err) { QMPResponseParser *qmp = opaque; - if (!obj) { - fprintf(stderr, "QMP JSON response parsing failed\n"); + assert(!obj != !err); + + if (err) { + error_prepend(&err, "QMP JSON response parsing failed: "); + error_report_err(err); abort(); } From patchwork Fri Aug 17 15:05:38 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 959016 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSst3z0zz9s0n for ; Sat, 18 Aug 2018 02:13:06 +1000 (AEST) Received: from localhost ([::1]:35054 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhN2-0007jv-6x for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:13:04 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50324) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSI-00052a-8O for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008R2-Rt for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:43586 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008Nz-Bg for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DBEF240131CA; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 925F62156712; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 9CCA2116908B; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:38 +0200 Message-Id: <20180817150559.16243-40-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 39/60] json: Leave rejecting invalid interpolation to parser X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Both lexer and parser reject invalid interpolation specifications. The parser's check is useless. The lexer ends the token right after the first bad character. This tends to lead to suboptimal error reporting. For instance, input [ %04d ] produces the tokens JSON_LSQUARE [ JSON_ERROR %0 JSON_INTEGER 4 JSON_KEYWORD d JSON_RSQUARE ] The parser then yields an error, an object and two more errors: error: Invalid JSON syntax object: 4 error: JSON parse error, invalid keyword error: JSON parse error, expecting value Dumb down the lexer to accept [A-Za-z0-9]*. The parser's check is now used. Emit a proper error there. The lexer now produces JSON_LSQUARE [ JSON_INTERPOLATION %04d JSON_RSQUARE ] and the parser reports just JSON parse error, invalid interpolation '%04d' Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 44 ++++++------------------------------------- qobject/json-parser.c | 1 + tests/check-qjson.c | 3 ++- 3 files changed, 9 insertions(+), 39 deletions(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index cf15266cbe..ab2453a1e1 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -93,7 +93,8 @@ * (apostrophe) instead of %x22 (quotation mark), and can't contain * unescaped apostrophe, but can contain unescaped quotation mark. * - Interpolation, if enabled: - * interpolation = %((l|ll|I64)[du]|[ipsf]) + * The lexer accepts %[A-Za-z0-9]*, and leaves rejecting invalid + * ones to the parser. * * Note: * - Input must be encoded in modified UTF-8. @@ -116,11 +117,6 @@ enum json_lexer_state { IN_NEG_NONZERO_NUMBER, IN_KEYWORD, IN_INTERPOL, - IN_INTERPOL_L, - IN_INTERPOL_LL, - IN_INTERPOL_I, - IN_INTERPOL_I6, - IN_INTERPOL_I64, IN_WHITESPACE, IN_START, IN_START_INTERPOL, /* must be IN_START + 1 */ @@ -224,39 +220,11 @@ static const uint8_t json_lexer[][256] = { }, /* interpolation */ - [IN_INTERPOL_LL] = { - ['d'] = JSON_INTERPOL, - ['u'] = JSON_INTERPOL, - }, - - [IN_INTERPOL_L] = { - ['d'] = JSON_INTERPOL, - ['l'] = IN_INTERPOL_LL, - ['u'] = JSON_INTERPOL, - }, - - [IN_INTERPOL_I64] = { - ['d'] = JSON_INTERPOL, - ['u'] = JSON_INTERPOL, - }, - - [IN_INTERPOL_I6] = { - ['4'] = IN_INTERPOL_I64, - }, - - [IN_INTERPOL_I] = { - ['6'] = IN_INTERPOL_I6, - }, - [IN_INTERPOL] = { - ['d'] = JSON_INTERPOL, - ['i'] = JSON_INTERPOL, - ['p'] = JSON_INTERPOL, - ['s'] = JSON_INTERPOL, - ['u'] = JSON_INTERPOL, - ['f'] = JSON_INTERPOL, - ['l'] = IN_INTERPOL_L, - ['I'] = IN_INTERPOL_I, + TERMINAL(JSON_INTERPOL), + ['A' ... 'Z'] = IN_INTERPOL, + ['a' ... 'z'] = IN_INTERPOL, + ['0' ... '9'] = IN_INTERPOL, }, /* diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 56bbfe6810..32131c08d5 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -453,6 +453,7 @@ static QObject *parse_interpolation(JSONParserContext *ctxt, va_list *ap) } else if (!strcmp(token->str, "%f")) { return QOBJECT(qnum_from_double(va_arg(*ap, double))); } + parse_error(ctxt, token, "invalid interpolation '%s'", token->str); return NULL; } diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 3bd216f357..6a1dbbae43 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1021,7 +1021,8 @@ static void interpolation_unknown(void) } g_test_trap_subprocess(NULL, 0, 0); g_test_trap_assert_failed(); - g_test_trap_assert_stderr("*Unexpected error*stray '%x'*"); + g_test_trap_assert_stderr("*Unexpected error*" + "invalid interpolation '%x'*"); } static void interpolation_string(void) From patchwork Fri Aug 17 15:05:39 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958963 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS8h4Dxwz9sC7 for ; Sat, 18 Aug 2018 01:40:52 +1000 (AEST) Received: from localhost ([::1]:34818 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgrq-0002UQ-2k for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:40:50 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50313) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSI-00052M-2w for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008Qq-R2 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46770 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008Oa-FI for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 082B381A4EA9; Fri, 17 Aug 2018 15:14:23 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B62B4112D18D; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id A30BE116B848; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:39 +0200 Message-Id: <20180817150559.16243-41-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:23 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:23 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 40/60] json: Replace %I64d, %I64u by %PRId64, %PRIu64 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Support for %I64d got added in commit 2c0d4b36e7f "json: fix PRId64 on Win32". We had to hard-code I64d because we used the lexer's finite state machine to check interpolations. No more, so clean this up. Additional conversion specifications would be easy enough to implement when needed. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 10 ++++++---- tests/check-qjson.c | 10 ++++++++++ 2 files changed, 16 insertions(+), 4 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 32131c08d5..c367dfc420 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -438,16 +438,18 @@ static QObject *parse_interpolation(JSONParserContext *ctxt, va_list *ap) return QOBJECT(qnum_from_int(va_arg(*ap, int))); } else if (!strcmp(token->str, "%ld")) { return QOBJECT(qnum_from_int(va_arg(*ap, long))); - } else if (!strcmp(token->str, "%lld") || - !strcmp(token->str, "%I64d")) { + } else if (!strcmp(token->str, "%lld")) { return QOBJECT(qnum_from_int(va_arg(*ap, long long))); + } else if (!strcmp(token->str, "%" PRId64)) { + return QOBJECT(qnum_from_int(va_arg(*ap, int64_t))); } else if (!strcmp(token->str, "%u")) { return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned int))); } else if (!strcmp(token->str, "%lu")) { return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned long))); - } else if (!strcmp(token->str, "%llu") || - !strcmp(token->str, "%I64u")) { + } else if (!strcmp(token->str, "%llu")) { return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned long long))); + } else if (!strcmp(token->str, "%" PRIu64)) { + return QOBJECT(qnum_from_uint(va_arg(*ap, uint64_t))); } else if (!strcmp(token->str, "%s")) { return QOBJECT(qstring_from_str(va_arg(*ap, const char *))); } else if (!strcmp(token->str, "%f")) { diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 6a1dbbae43..d741d29733 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -945,9 +945,11 @@ static void keyword_literal(void) static void interpolation_valid(void) { long long value_lld = 0x123456789abcdefLL; + int64_t value_d64 = value_lld; long value_ld = (long)value_lld; int value_d = (int)value_lld; unsigned long long value_llu = 0xfedcba9876543210ULL; + uint64_t value_u64 = value_llu; unsigned long value_lu = (unsigned long)value_llu; unsigned value_u = (unsigned)value_llu; double value_f = 2.323423423; @@ -985,6 +987,10 @@ static void interpolation_valid(void) g_assert_cmpint(qnum_get_int(qnum), ==, value_lld); qobject_unref(qnum); + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%" PRId64, value_d64)); + g_assert_cmpint(qnum_get_int(qnum), ==, value_lld); + qobject_unref(qnum); + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%u", value_u)); g_assert_cmpuint(qnum_get_uint(qnum), ==, value_u); qobject_unref(qnum); @@ -997,6 +1003,10 @@ static void interpolation_valid(void) g_assert_cmpuint(qnum_get_uint(qnum), ==, value_llu); qobject_unref(qnum); + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%" PRIu64, value_u64)); + g_assert_cmpuint(qnum_get_uint(qnum), ==, value_llu); + qobject_unref(qnum); + qnum = qobject_to(QNum, qobject_from_jsonf_nofail("%f", value_f)); g_assert(qnum_get_double(qnum) == value_f); qobject_unref(qnum); From patchwork Fri Aug 17 15:05:40 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 959014 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSsT1tglz9sCP for ; Sat, 18 Aug 2018 02:12:45 +1000 (AEST) Received: from localhost ([::1]:35052 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhMg-0007T1-Tn for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:12:42 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50277) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSH-00051U-AL for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008Qc-QW for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:25 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46766 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008O5-E1 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E293581A4EA8; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BAD472027EA0; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id A8BA61171DC0; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:40 +0200 Message-Id: <20180817150559.16243-42-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 41/60] json: Nicer recovery from invalid leading zero X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" For input 0123, the lexer produces the tokens JSON_ERROR 01 JSON_INTEGER 23 Reporting an error is correct; 0123 is invalid according to RFC 7159. But the error recovery isn't nice. Make the finite state machine eat digits before going into the error state. The lexer now produces JSON_ERROR 0123 Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index ab2453a1e1..4028f39f28 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -108,6 +108,7 @@ enum json_lexer_state { IN_SQ_STRING_ESCAPE, IN_SQ_STRING, IN_ZERO, + IN_BAD_ZERO, IN_DIGITS, IN_DIGIT, IN_EXP_E, @@ -159,10 +160,14 @@ static const uint8_t json_lexer[][256] = { /* Zero */ [IN_ZERO] = { TERMINAL(JSON_INTEGER), - ['0' ... '9'] = IN_ERROR, + ['0' ... '9'] = IN_BAD_ZERO, ['.'] = IN_MANTISSA, }, + [IN_BAD_ZERO] = { + ['0' ... '9'] = IN_BAD_ZERO, + }, + /* Float */ [IN_DIGITS] = { TERMINAL(JSON_FLOAT), From patchwork Fri Aug 17 15:05:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958953 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS1Q4Sb4z9sC7 for ; Sat, 18 Aug 2018 01:34:34 +1000 (AEST) Received: from localhost ([::1]:34780 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqglk-0003Wn-67 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:34:32 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46326) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKJ-00037J-MX for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKF-0001mv-Vr for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:11 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46180 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001ki-6J for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 87C80407B397; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 619397C2E; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id ADE9F1171DC1; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:41 +0200 Message-Id: <20180817150559.16243-43-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 42/60] json: Improve names of lexer states related to numbers X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-lexer.c | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 4028f39f28..6a3b89c855 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -109,13 +109,13 @@ enum json_lexer_state { IN_SQ_STRING, IN_ZERO, IN_BAD_ZERO, - IN_DIGITS, - IN_DIGIT, + IN_EXP_DIGITS, + IN_EXP_SIGN, IN_EXP_E, IN_MANTISSA, IN_MANTISSA_DIGITS, - IN_NONZERO_NUMBER, - IN_NEG_NONZERO_NUMBER, + IN_DIGITS, + IN_SIGN, IN_KEYWORD, IN_INTERPOL, IN_WHITESPACE, @@ -169,19 +169,19 @@ static const uint8_t json_lexer[][256] = { }, /* Float */ - [IN_DIGITS] = { + [IN_EXP_DIGITS] = { TERMINAL(JSON_FLOAT), - ['0' ... '9'] = IN_DIGITS, + ['0' ... '9'] = IN_EXP_DIGITS, }, - [IN_DIGIT] = { - ['0' ... '9'] = IN_DIGITS, + [IN_EXP_SIGN] = { + ['0' ... '9'] = IN_EXP_DIGITS, }, [IN_EXP_E] = { - ['-'] = IN_DIGIT, - ['+'] = IN_DIGIT, - ['0' ... '9'] = IN_DIGITS, + ['-'] = IN_EXP_SIGN, + ['+'] = IN_EXP_SIGN, + ['0' ... '9'] = IN_EXP_DIGITS, }, [IN_MANTISSA_DIGITS] = { @@ -196,17 +196,17 @@ static const uint8_t json_lexer[][256] = { }, /* Number */ - [IN_NONZERO_NUMBER] = { + [IN_DIGITS] = { TERMINAL(JSON_INTEGER), - ['0' ... '9'] = IN_NONZERO_NUMBER, + ['0' ... '9'] = IN_DIGITS, ['e'] = IN_EXP_E, ['E'] = IN_EXP_E, ['.'] = IN_MANTISSA, }, - [IN_NEG_NONZERO_NUMBER] = { + [IN_SIGN] = { ['0'] = IN_ZERO, - ['1' ... '9'] = IN_NONZERO_NUMBER, + ['1' ... '9'] = IN_DIGITS, }, /* keywords */ @@ -241,8 +241,8 @@ static const uint8_t json_lexer[][256] = { ['"'] = IN_DQ_STRING, ['\''] = IN_SQ_STRING, ['0'] = IN_ZERO, - ['1' ... '9'] = IN_NONZERO_NUMBER, - ['-'] = IN_NEG_NONZERO_NUMBER, + ['1' ... '9'] = IN_DIGITS, + ['-'] = IN_SIGN, ['{'] = JSON_LCURLY, ['}'] = JSON_RCURLY, ['['] = JSON_LSQUARE, From patchwork Fri Aug 17 15:05:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958988 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSk93LkHz9s47 for ; Sat, 18 Aug 2018 02:06:25 +1000 (AEST) Received: from localhost ([::1]:35012 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhGZ-0002Bn-2r for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:06:23 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50227) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSF-00051N-QF for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSE-0008NN-EI for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46740 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSE-0008MZ-5o for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:22 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C072881663F6; Fri, 17 Aug 2018 15:14:21 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7FBC821568A5; Fri, 17 Aug 2018 15:14:19 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id B302D1171DC2; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:42 +0200 Message-Id: <20180817150559.16243-44-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 43/60] qjson: Fix qobject_from_json() & friends for multiple values X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" qobject_from_json() & friends use the consume_json() callback to receive either a value or an error from the parser. When they are fed a string that contains more than either one JSON value or one JSON syntax error, consume_json() gets called multiple times. When the last call receives a value, qobject_from_json() returns that value. Any other values are leaked. When any call receives an error, qobject_from_json() sets the first error received. Any other errors are thrown away. When values follow errors, qobject_from_json() returns both a value and sets an error. That's bad. Impact: * block.c's parse_json_protocol() ignores and leaks the value. It's used to to parse pseudo-filenames starting with "json:". The pseudo-filenames can come from the user or from image meta-data such as a QCOW2 image's backing file name. * vl.c's parse_display_qapi() ignores and leaks the error. It's used to parse the argument of command line option -display. * vl.c's main() case QEMU_OPTION_blockdev ignores the error and leaves it in @err. main() will then pass a pointer to a non-null Error * to net_init_clients(), which is forbidden. It can lead to assertion failure or other misbehavior. * check-qjson.c's multiple_values() demonstrates the badness. * The other callers are not affected since they only pass strings with exactly one JSON value or, in the case of negative tests, one error. The impact on the _nofail() functions is relatively harmless. They abort when any call receives an error. Else they return the last value, and leak the others, if any. Fix consume_json() as follows. On the first call, save value and error as before. On subsequent calls, if any, don't save them. If the first call saved a value, the next call, if any, replaces the value by an "Expecting at most one JSON value" error. Take care not to leak values or errors that aren't saved. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/qjson.c | 15 ++++++++++++++- tests/check-qjson.c | 10 +++------- 2 files changed, 17 insertions(+), 8 deletions(-) diff --git a/qobject/qjson.c b/qobject/qjson.c index 7395556069..7f69036487 100644 --- a/qobject/qjson.c +++ b/qobject/qjson.c @@ -33,8 +33,21 @@ static void consume_json(void *opaque, QObject *json, Error *err) { JSONParsingState *s = opaque; + assert(!json != !err); + assert(!s->result || !s->err); + + if (s->result) { + qobject_unref(s->result); + s->result = NULL; + error_setg(&s->err, "Expecting at most one JSON value"); + } + if (s->err) { + qobject_unref(json); + error_free(err); + return; + } s->result = json; - error_propagate(&s->err, err); + s->err = err; } /* diff --git a/tests/check-qjson.c b/tests/check-qjson.c index d741d29733..22a3225358 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1443,17 +1443,13 @@ static void multiple_values(void) Error *err = NULL; QObject *obj; - /* BUG this leaks the syntax tree for "false" */ obj = qobject_from_json("false true", &err); - g_assert(qbool_get_bool(qobject_to(QBool, obj))); - g_assert(!err); - qobject_unref(obj); + error_free_or_abort(&err); + g_assert(obj == NULL); - /* BUG simultaneously succeeds and fails */ obj = qobject_from_json("} true", &err); - g_assert(qbool_get_bool(qobject_to(QBool, obj))); error_free_or_abort(&err); - qobject_unref(obj); + g_assert(obj == NULL); } int main(int argc, char **argv) From patchwork Fri Aug 17 15:05:43 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958962 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS8W54cBz9sCR for ; Sat, 18 Aug 2018 01:40:42 +1000 (AEST) Received: from localhost ([::1]:34814 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgre-0002JB-Uk for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:40:39 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46386) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKL-00038v-Cc for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001nw-AA for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:13 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57114 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001l1-Gp for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AAF1841C31; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8545516878; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id B82A91171DC3; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:43 +0200 Message-Id: <20180817150559.16243-45-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 44/60] json: Fix latent parser aborts at end of input X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" json-parser.c carefully reports end of input like this: token = parser_context_pop_token(ctxt); if (token == NULL) { parse_error(ctxt, NULL, "premature EOI"); goto out; } Except parser_context_pop_token() can't return null, it fails its assertion instead. Same for parser_context_peek_token(). Broken in commit 65c0f1e9558, and faithfully preserved in commit 95385fe9ace. Only a latent bug, because the streamer throws away any input that could trigger it. Drop the assertions, so we can fix the streamer in the next commit. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index c367dfc420..247946e7c7 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -226,14 +226,12 @@ out: static JSONToken *parser_context_pop_token(JSONParserContext *ctxt) { g_free(ctxt->current); - assert(!g_queue_is_empty(ctxt->buf)); ctxt->current = g_queue_pop_head(ctxt->buf); return ctxt->current; } static JSONToken *parser_context_peek_token(JSONParserContext *ctxt) { - assert(!g_queue_is_empty(ctxt->buf)); return g_queue_peek_head(ctxt->buf); } From patchwork Fri Aug 17 15:05:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 959002 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSpv5T12z9s0n for ; Sat, 18 Aug 2018 02:10:31 +1000 (AEST) Received: from localhost ([::1]:35037 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhKX-0005Ss-Bk for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:10:29 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50220) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSF-00051H-Om for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSE-0008NE-Ar for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46732 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSE-0008MS-0B for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:22 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9E1E68011454; Fri, 17 Aug 2018 15:14:21 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8272D10075F2; Fri, 17 Aug 2018 15:14:19 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id BD2981171DC4; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:44 +0200 Message-Id: <20180817150559.16243-46-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 45/60] json: Fix streamer not to ignore trailing unterminated structures X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" json_message_process_token() accumulates tokens until it got the sequence of tokens that comprise a single JSON value (it counts curly braces and square brackets to decide). It feeds those token sequences to json_parser_parse(). If a non-empty sequence of tokens remains at the end of the parse, it's silently ignored. check-qjson.c cases unterminated_array(), unterminated_array_comma(), unterminated_dict(), unterminated_dict_comma() demonstrate this bug. Fix as follows. Introduce a JSON_END_OF_INPUT token. When the streamer receives it, it feeds the accumulated tokens to json_parser_parse(). Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-lexer.h | 1 + qobject/json-lexer.c | 2 ++ qobject/json-streamer.c | 8 ++++++++ tests/check-qjson.c | 8 ++++---- 4 files changed, 15 insertions(+), 4 deletions(-) diff --git a/include/qapi/qmp/json-lexer.h b/include/qapi/qmp/json-lexer.h index 5586d12f26..8058695e40 100644 --- a/include/qapi/qmp/json-lexer.h +++ b/include/qapi/qmp/json-lexer.h @@ -30,6 +30,7 @@ typedef enum json_token_type { JSON_INTERPOL, JSON_SKIP, JSON_ERROR, + JSON_END_OF_INPUT } JSONTokenType; typedef struct JSONLexer { diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 6a3b89c855..ef29e2782d 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -353,6 +353,8 @@ void json_lexer_flush(JSONLexer *lexer) if (lexer->state != lexer->start_state) { json_lexer_feed_char(lexer, 0, true); } + json_message_process_token(lexer, lexer->token, JSON_END_OF_INPUT, + lexer->x, lexer->y); } void json_lexer_destroy(JSONLexer *lexer) diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index e372ecc895..674dfe6e85 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -60,6 +60,13 @@ void json_message_process_token(JSONLexer *lexer, GString *input, case JSON_ERROR: error_setg(&err, "JSON parse error, stray '%s'", input->str); goto out_emit; + case JSON_END_OF_INPUT: + if (g_queue_is_empty(parser->tokens)) { + return; + } + json = json_parser_parse(parser->tokens, parser->ap, &err); + parser->tokens = NULL; + goto out_emit; default: break; } @@ -137,6 +144,7 @@ void json_message_parser_feed(JSONMessageParser *parser, void json_message_parser_flush(JSONMessageParser *parser) { json_lexer_flush(&parser->lexer); + assert(g_queue_is_empty(parser->tokens)); } void json_message_parser_destroy(JSONMessageParser *parser) diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 22a3225358..a670746ca7 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1360,7 +1360,7 @@ static void unterminated_array(void) { Error *err = NULL; QObject *obj = qobject_from_json("[32", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); } @@ -1368,7 +1368,7 @@ static void unterminated_array_comma(void) { Error *err = NULL; QObject *obj = qobject_from_json("[32,", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); } @@ -1384,7 +1384,7 @@ static void unterminated_dict(void) { Error *err = NULL; QObject *obj = qobject_from_json("{'abc':32", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); } @@ -1392,7 +1392,7 @@ static void unterminated_dict_comma(void) { Error *err = NULL; QObject *obj = qobject_from_json("{'abc':32,", &err); - g_assert(!err); /* BUG */ + error_free_or_abort(&err); g_assert(obj == NULL); } From patchwork Fri Aug 17 15:05:45 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958978 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSRl66f9z9sCP for ; Sat, 18 Aug 2018 01:53:55 +1000 (AEST) Received: from localhost ([::1]:34895 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh4T-0007LN-8f for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:53:53 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50248) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSG-00051Q-GX for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008PQ-Ew for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:24 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46750 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008No-4Q for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id BD4488182D28; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 972DA7C2E; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id C24181171DC5; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:45 +0200 Message-Id: <20180817150559.16243-47-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 46/60] json: Assert json_parser_parse() consumes all tokens on success X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 1 + 1 file changed, 1 insertion(+) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 247946e7c7..8f13c8f062 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -544,6 +544,7 @@ QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp) QObject *result; result = parse_value(&ctxt, ap); + assert(ctxt.err || g_queue_is_empty(ctxt.buf)); error_propagate(errp, ctxt.err); From patchwork Fri Aug 17 15:05:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 959005 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSqL485gz9s0n for ; Sat, 18 Aug 2018 02:10:54 +1000 (AEST) Received: from localhost ([::1]:35044 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhKu-0005r2-76 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:10:52 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50290) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSH-00051w-Nj for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008QK-Om for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:25 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46762 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008Ny-AV for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D6E8C818F6F2; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9175510EE6D7; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id C803E1171DC6; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:46 +0200 Message-Id: <20180817150559.16243-48-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 47/60] qjson: Have qobject_from_json() & friends reject empty and blank X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The last case where qobject_from_json() & friends return null without setting an error is empty or blank input. Callers: * block.c's parse_json_protocol() reports "Could not parse the JSON options". It's marked as a work-around, because it also covered actual bugs, but they got fixed in the previous few commits. * qobject_input_visitor_new_str() reports "JSON parse error". Also marked as work-around. The recent fixes have made this unreachable, because it currently gets called only for input starting with '{'. * check-qjson.c's empty_input() and blank_input() demonstrate the behavior. * The other callers are not affected since they only pass input with exactly one JSON value or, in the case of negative tests, one error. Fail with "Expecting a JSON value" instead of returning null, and simplify callers. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- block.c | 5 ----- qapi/qobject-input-visitor.c | 5 ----- qobject/qjson.c | 4 ++++ tests/check-qjson.c | 12 ++++++++++-- 4 files changed, 14 insertions(+), 12 deletions(-) diff --git a/block.c b/block.c index 6161dbe3eb..0dbb1fcc7b 100644 --- a/block.c +++ b/block.c @@ -1478,11 +1478,6 @@ static QDict *parse_json_filename(const char *filename, Error **errp) options_obj = qobject_from_json(filename, errp); if (!options_obj) { - /* Work around qobject_from_json() lossage TODO fix that */ - if (errp && !*errp) { - error_setg(errp, "Could not parse the JSON options"); - return NULL; - } error_prepend(errp, "Could not parse the JSON options: "); return NULL; } diff --git a/qapi/qobject-input-visitor.c b/qapi/qobject-input-visitor.c index da57f4cc24..3e88b27f9e 100644 --- a/qapi/qobject-input-visitor.c +++ b/qapi/qobject-input-visitor.c @@ -725,11 +725,6 @@ Visitor *qobject_input_visitor_new_str(const char *str, if (is_json) { obj = qobject_from_json(str, errp); if (!obj) { - /* Work around qobject_from_json() lossage TODO fix that */ - if (errp && !*errp) { - error_setg(errp, "JSON parse error"); - return NULL; - } return NULL; } args = qobject_to(QDict, obj); diff --git a/qobject/qjson.c b/qobject/qjson.c index 7f69036487..b9ccae2c2a 100644 --- a/qobject/qjson.c +++ b/qobject/qjson.c @@ -70,6 +70,10 @@ static QObject *qobject_from_jsonv(const char *string, va_list *ap, json_message_parser_flush(&state.parser); json_message_parser_destroy(&state.parser); + if (!state.result && !state.err) { + error_setg(&state.err, "Expecting a JSON value"); + } + error_propagate(errp, state.err); return state.result; } diff --git a/tests/check-qjson.c b/tests/check-qjson.c index a670746ca7..344f9f8ed9 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1291,13 +1291,21 @@ static void simple_interpolation(void) static void empty_input(void) { - QObject *obj = qobject_from_json("", &error_abort); + Error *err = NULL; + QObject *obj; + + obj = qobject_from_json("", &err); + error_free_or_abort(&err); g_assert(obj == NULL); } static void blank_input(void) { - QObject *obj = qobject_from_json("\n ", &error_abort); + Error *err = NULL; + QObject *obj; + + obj = qobject_from_json("\n ", &err); + error_free_or_abort(&err); g_assert(obj == NULL); } From patchwork Fri Aug 17 15:05:47 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958959 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS5C2cJSz9sC7 for ; Sat, 18 Aug 2018 01:37:51 +1000 (AEST) Received: from localhost ([::1]:34805 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgou-0008W0-TV for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:37:48 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50297) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSH-000522-Qs for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008Qm-RX for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:25 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57430 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008Ns-Ak for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CAAF2C12A7; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9AB172166BA5; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id CD0A21171DC7; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:47 +0200 Message-Id: <20180817150559.16243-49-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 48/60] json: Enforce token count and size limits more tightly X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Token count and size limits exist to guard against excessive heap usage. We check them only after we created the token on the heap. That's assigning a cowboy to the barn to lasso the horse after it has bolted. Close the barn door instead: check before we create the token. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-streamer.c | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 674dfe6e85..810aae521f 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -20,7 +20,7 @@ #define MAX_TOKEN_SIZE (64ULL << 20) #define MAX_TOKEN_COUNT (2ULL << 20) -#define MAX_NESTING (1ULL << 10) +#define MAX_NESTING (1 << 10) static void json_message_free_token(void *token, void *opaque) { @@ -71,6 +71,23 @@ void json_message_process_token(JSONLexer *lexer, GString *input, break; } + /* + * Security consideration, we limit total memory allocated per object + * and the maximum recursion depth that a message can force. + */ + if (parser->token_size + input->len + 1 > MAX_TOKEN_SIZE) { + error_setg(&err, "JSON token size limit exceeded"); + goto out_emit; + } + if (g_queue_get_length(parser->tokens) + 1 > MAX_TOKEN_COUNT) { + error_setg(&err, "JSON token count limit exceeded"); + goto out_emit; + } + if (parser->bracket_count + parser->brace_count > MAX_NESTING) { + error_setg(&err, "JSON nesting depth limit exceeded"); + goto out_emit; + } + token = g_malloc(sizeof(JSONToken) + input->len + 1); token->type = type; memcpy(token->str, input->str, input->len); @@ -91,23 +108,6 @@ void json_message_process_token(JSONLexer *lexer, GString *input, goto out_emit; } - /* - * Security consideration, we limit total memory allocated per object - * and the maximum recursion depth that a message can force. - */ - if (parser->token_size > MAX_TOKEN_SIZE) { - error_setg(&err, "JSON token size limit exceeded"); - goto out_emit; - } - if (g_queue_get_length(parser->tokens) > MAX_TOKEN_COUNT) { - error_setg(&err, "JSON token count limit exceeded"); - goto out_emit; - } - if (parser->bracket_count + parser->brace_count > MAX_NESTING) { - error_setg(&err, "JSON nesting depth limit exceeded"); - goto out_emit; - } - return; out_emit: From patchwork Fri Aug 17 15:05:48 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958981 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSVy065bz9sC2 for ; Sat, 18 Aug 2018 01:56:42 +1000 (AEST) Received: from localhost ([::1]:34912 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh79-0007Hj-Kg for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:56:39 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50265) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSG-00051T-V6 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008Q8-M1 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:24 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46520 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008Nt-8z for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C77D140241CB; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9D6542026D6C; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id D224E1171DC9; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:48 +0200 Message-Id: <20180817150559.16243-50-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 49/60] json: Streamline json_message_process_token() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-streamer.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 810aae521f..954bf9d468 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -99,16 +99,13 @@ void json_message_process_token(JSONLexer *lexer, GString *input, g_queue_push_tail(parser->tokens, token); - if (parser->brace_count < 0 || - parser->bracket_count < 0 || - (parser->brace_count == 0 && - parser->bracket_count == 0)) { - json = json_parser_parse(parser->tokens, parser->ap, &err); - parser->tokens = NULL; - goto out_emit; + if ((parser->brace_count > 0 || parser->bracket_count > 0) + && parser->bracket_count >= 0 && parser->bracket_count >= 0) { + return; } - return; + json = json_parser_parse(parser->tokens, parser->ap, &err); + parser->tokens = NULL; out_emit: parser->brace_count = 0; From patchwork Fri Aug 17 15:05:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958973 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSMW4GXtz9sCP for ; Sat, 18 Aug 2018 01:50:15 +1000 (AEST) Received: from localhost ([::1]:34874 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh0v-0003BC-35 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:50:13 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46629) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKc-0003O8-7p for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001of-KW for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57118 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001lK-UM for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E2B4626A43; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9DA3F17305; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id D73B41171DCA; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:49 +0200 Message-Id: <20180817150559.16243-51-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 50/60] json: Unbox tokens queue in JSONMessageParser X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-streamer.h | 2 +- qobject/json-parser.c | 1 - qobject/json-streamer.c | 30 +++++++++++------------------- 3 files changed, 12 insertions(+), 21 deletions(-) diff --git a/include/qapi/qmp/json-streamer.h b/include/qapi/qmp/json-streamer.h index e162fd01da..d1d7fe2595 100644 --- a/include/qapi/qmp/json-streamer.h +++ b/include/qapi/qmp/json-streamer.h @@ -31,7 +31,7 @@ typedef struct JSONMessageParser JSONLexer lexer; int brace_count; int bracket_count; - GQueue *tokens; + GQueue tokens; uint64_t token_size; } JSONMessageParser; diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 8f13c8f062..8dafadb833 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -552,7 +552,6 @@ QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp) parser_context_pop_token(&ctxt); } g_free(ctxt.current); - g_queue_free(ctxt.buf); return result; } diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 954bf9d468..9210281a65 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -22,17 +22,12 @@ #define MAX_TOKEN_COUNT (2ULL << 20) #define MAX_NESTING (1 << 10) -static void json_message_free_token(void *token, void *opaque) -{ - g_free(token); -} - static void json_message_free_tokens(JSONMessageParser *parser) { - if (parser->tokens) { - g_queue_foreach(parser->tokens, json_message_free_token, NULL); - g_queue_free(parser->tokens); - parser->tokens = NULL; + JSONToken *token; + + while ((token = g_queue_pop_head(&parser->tokens))) { + g_free(token); } } @@ -61,11 +56,10 @@ void json_message_process_token(JSONLexer *lexer, GString *input, error_setg(&err, "JSON parse error, stray '%s'", input->str); goto out_emit; case JSON_END_OF_INPUT: - if (g_queue_is_empty(parser->tokens)) { + if (g_queue_is_empty(&parser->tokens)) { return; } - json = json_parser_parse(parser->tokens, parser->ap, &err); - parser->tokens = NULL; + json = json_parser_parse(&parser->tokens, parser->ap, &err); goto out_emit; default: break; @@ -79,7 +73,7 @@ void json_message_process_token(JSONLexer *lexer, GString *input, error_setg(&err, "JSON token size limit exceeded"); goto out_emit; } - if (g_queue_get_length(parser->tokens) + 1 > MAX_TOKEN_COUNT) { + if (g_queue_get_length(&parser->tokens) + 1 > MAX_TOKEN_COUNT) { error_setg(&err, "JSON token count limit exceeded"); goto out_emit; } @@ -97,21 +91,19 @@ void json_message_process_token(JSONLexer *lexer, GString *input, parser->token_size += input->len; - g_queue_push_tail(parser->tokens, token); + g_queue_push_tail(&parser->tokens, token); if ((parser->brace_count > 0 || parser->bracket_count > 0) && parser->bracket_count >= 0 && parser->bracket_count >= 0) { return; } - json = json_parser_parse(parser->tokens, parser->ap, &err); - parser->tokens = NULL; + json = json_parser_parse(&parser->tokens, parser->ap, &err); out_emit: parser->brace_count = 0; parser->bracket_count = 0; json_message_free_tokens(parser); - parser->tokens = g_queue_new(); parser->token_size = 0; parser->emit(parser->opaque, json, err); } @@ -126,7 +118,7 @@ void json_message_parser_init(JSONMessageParser *parser, parser->ap = ap; parser->brace_count = 0; parser->bracket_count = 0; - parser->tokens = g_queue_new(); + g_queue_init(&parser->tokens); parser->token_size = 0; json_lexer_init(&parser->lexer, !!ap); @@ -141,7 +133,7 @@ void json_message_parser_feed(JSONMessageParser *parser, void json_message_parser_flush(JSONMessageParser *parser) { json_lexer_flush(&parser->lexer); - assert(g_queue_is_empty(parser->tokens)); + assert(g_queue_is_empty(&parser->tokens)); } void json_message_parser_destroy(JSONMessageParser *parser) From patchwork Fri Aug 17 15:05:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958986 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSgJ722Tz9sCR for ; Sat, 18 Aug 2018 02:03:56 +1000 (AEST) Received: from localhost ([::1]:34998 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhEA-0006iE-Mr for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:03:54 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50256) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSG-00051R-Pa for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008Pw-LH for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:24 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46756 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008Nq-7C for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C7D0B818F6E3; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9FE3E1687B; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id DCF641171DCB; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:50 +0200 Message-Id: <20180817150559.16243-52-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 51/60] json: Eliminate lexer state IN_ERROR and pseudo-token JSON_MIN X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-lexer.h | 10 ++++------ qobject/json-lexer.c | 15 +++++++-------- 2 files changed, 11 insertions(+), 14 deletions(-) diff --git a/include/qapi/qmp/json-lexer.h b/include/qapi/qmp/json-lexer.h index 8058695e40..f3524de07a 100644 --- a/include/qapi/qmp/json-lexer.h +++ b/include/qapi/qmp/json-lexer.h @@ -14,10 +14,9 @@ #ifndef QEMU_JSON_LEXER_H #define QEMU_JSON_LEXER_H - -typedef enum json_token_type { - JSON_MIN = 100, - JSON_LCURLY = JSON_MIN, +typedef enum { + JSON_ERROR = 0, /* must be zero */ + JSON_LCURLY, JSON_RCURLY, JSON_LSQUARE, JSON_RSQUARE, @@ -29,8 +28,7 @@ typedef enum json_token_type { JSON_STRING, JSON_INTERPOL, JSON_SKIP, - JSON_ERROR, - JSON_END_OF_INPUT + JSON_END_OF_INPUT /* must be last */ } JSONTokenType; typedef struct JSONLexer { diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index ef29e2782d..49e075a51e 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -101,8 +101,9 @@ * - Decoding and validating is left to the parser. */ -enum json_lexer_state { - IN_ERROR = 0, /* must really be 0, see json_lexer[] */ +enum { + IN_START = JSON_END_OF_INPUT + 1, + IN_START_INTERPOL, /* must be IN_START + 1 */ IN_DQ_STRING_ESCAPE, IN_DQ_STRING, IN_SQ_STRING_ESCAPE, @@ -119,11 +120,9 @@ enum json_lexer_state { IN_KEYWORD, IN_INTERPOL, IN_WHITESPACE, - IN_START, - IN_START_INTERPOL, /* must be IN_START + 1 */ }; -QEMU_BUILD_BUG_ON((int)JSON_MIN <= (int)IN_START_INTERPOL); +QEMU_BUILD_BUG_ON(JSON_ERROR != 0); /* json_lexer[] relies on this */ QEMU_BUILD_BUG_ON(IN_START_INTERPOL != IN_START + 1); #define TERMINAL(state) [0 ... 0x7F] = (state) @@ -132,10 +131,10 @@ QEMU_BUILD_BUG_ON(IN_START_INTERPOL != IN_START + 1); from OLD_STATE required lookahead. This happens whenever the table below uses the TERMINAL macro. */ #define TERMINAL_NEEDED_LOOKAHEAD(old_state, terminal) \ - (terminal != IN_ERROR && json_lexer[(old_state)][0] == (terminal)) + (terminal != JSON_ERROR && json_lexer[(old_state)][0] == (terminal)) static const uint8_t json_lexer[][256] = { - /* Relies on default initialization to IN_ERROR! */ + /* Relies on default initialization to JSON_ERROR */ /* double quote string */ [IN_DQ_STRING_ESCAPE] = { @@ -303,7 +302,7 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) g_string_truncate(lexer->token, 0); new_state = lexer->start_state; break; - case IN_ERROR: + case JSON_ERROR: /* XXX: To avoid having previous bad input leaving the parser in an * unresponsive state where we consume unpredictable amounts of * subsequent "good" input, percolate this error state up to the From patchwork Fri Aug 17 15:05:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958955 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS255sXGz9sC7 for ; Sat, 18 Aug 2018 01:35:09 +1000 (AEST) Received: from localhost ([::1]:34784 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgmJ-0003vJ-Fl for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:35:07 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46371) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKL-00038a-2K for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:19 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001np-AA for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:12 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56280 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKF-0001l8-F8 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:07 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C7806346FB; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A09111730B; Fri, 17 Aug 2018 15:06:06 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id E21671171DCC; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:51 +0200 Message-Id: <20180817150559.16243-53-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:06 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 52/60] json: Eliminate lexer state IN_WHITESPACE, pseudo-token JSON_SKIP X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Bonus: static json_lexer[] loses its unused elements. It shrinks from 8KiB to 4.75KiB for me. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-lexer.h | 1 - qobject/json-lexer.c | 26 +++++++++----------------- 2 files changed, 9 insertions(+), 18 deletions(-) diff --git a/include/qapi/qmp/json-lexer.h b/include/qapi/qmp/json-lexer.h index f3524de07a..1a2dbbb717 100644 --- a/include/qapi/qmp/json-lexer.h +++ b/include/qapi/qmp/json-lexer.h @@ -27,7 +27,6 @@ typedef enum { JSON_KEYWORD, JSON_STRING, JSON_INTERPOL, - JSON_SKIP, JSON_END_OF_INPUT /* must be last */ } JSONTokenType; diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 49e075a51e..431a1ede61 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -119,7 +119,6 @@ enum { IN_SIGN, IN_KEYWORD, IN_INTERPOL, - IN_WHITESPACE, }; QEMU_BUILD_BUG_ON(JSON_ERROR != 0); /* json_lexer[] relies on this */ @@ -214,15 +213,6 @@ static const uint8_t json_lexer[][256] = { ['a' ... 'z'] = IN_KEYWORD, }, - /* whitespace */ - [IN_WHITESPACE] = { - TERMINAL(JSON_SKIP), - [' '] = IN_WHITESPACE, - ['\t'] = IN_WHITESPACE, - ['\r'] = IN_WHITESPACE, - ['\n'] = IN_WHITESPACE, - }, - /* interpolation */ [IN_INTERPOL] = { TERMINAL(JSON_INTERPOL), @@ -249,12 +239,16 @@ static const uint8_t json_lexer[][256] = { [','] = JSON_COMMA, [':'] = JSON_COLON, ['a' ... 'z'] = IN_KEYWORD, - [' '] = IN_WHITESPACE, - ['\t'] = IN_WHITESPACE, - ['\r'] = IN_WHITESPACE, - ['\n'] = IN_WHITESPACE, + [' '] = IN_START, + ['\t'] = IN_START, + ['\r'] = IN_START, + ['\n'] = IN_START, }, [IN_START_INTERPOL]['%'] = IN_INTERPOL, + [IN_START_INTERPOL][' '] = IN_START_INTERPOL, + [IN_START_INTERPOL]['\t'] = IN_START_INTERPOL, + [IN_START_INTERPOL]['\r'] = IN_START_INTERPOL, + [IN_START_INTERPOL]['\n'] = IN_START_INTERPOL, }; void json_lexer_init(JSONLexer *lexer, bool enable_interpolation) @@ -279,7 +273,7 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) assert(lexer->state <= ARRAY_SIZE(json_lexer)); new_state = json_lexer[lexer->state][(uint8_t)ch]; char_consumed = !TERMINAL_NEEDED_LOOKAHEAD(lexer->state, new_state); - if (char_consumed && !flush) { + if (char_consumed && new_state != lexer->start_state && !flush) { g_string_append_c(lexer->token, ch); } @@ -297,8 +291,6 @@ static void json_lexer_feed_char(JSONLexer *lexer, char ch, bool flush) case JSON_STRING: json_message_process_token(lexer, lexer->token, new_state, lexer->x, lexer->y); - /* fall through */ - case JSON_SKIP: g_string_truncate(lexer->token, 0); new_state = lexer->start_state; break; From patchwork Fri Aug 17 15:05:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958975 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSNN3qlnz9sC2 for ; Sat, 18 Aug 2018 01:51:00 +1000 (AEST) Received: from localhost ([::1]:34883 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh1e-0004Oq-48 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:50:58 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50213) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSF-000517-HT for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSE-0008Mz-90 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56562 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSD-0008MU-W6 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:22 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A56692BDBF; Fri, 17 Aug 2018 15:14:21 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7AB852166BA5; Fri, 17 Aug 2018 15:14:19 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id E733F1171DCD; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:52 +0200 Message-Id: <20180817150559.16243-54-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 53/60] json: Make JSONToken opaque outside json-parser.c X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-parser.h | 4 ++++ include/qapi/qmp/json-streamer.h | 7 ------- qobject/json-parser.c | 19 +++++++++++++++++++ qobject/json-streamer.c | 8 +------- 4 files changed, 24 insertions(+), 14 deletions(-) diff --git a/include/qapi/qmp/json-parser.h b/include/qapi/qmp/json-parser.h index a34209db7a..21b23d7bec 100644 --- a/include/qapi/qmp/json-parser.h +++ b/include/qapi/qmp/json-parser.h @@ -15,7 +15,11 @@ #define QEMU_JSON_PARSER_H #include "qemu-common.h" +#include "qapi/qmp/json-lexer.h" +typedef struct JSONToken JSONToken; + +JSONToken *json_token(JSONTokenType type, int x, int y, GString *tokstr); QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp); #endif diff --git a/include/qapi/qmp/json-streamer.h b/include/qapi/qmp/json-streamer.h index d1d7fe2595..29950ac37c 100644 --- a/include/qapi/qmp/json-streamer.h +++ b/include/qapi/qmp/json-streamer.h @@ -16,13 +16,6 @@ #include "qapi/qmp/json-lexer.h" -typedef struct JSONToken { - int type; - int x; - int y; - char str[]; -} JSONToken; - typedef struct JSONMessageParser { void (*emit)(void *opaque, QObject *json, Error *err); diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 8dafadb833..7849be65e0 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -26,6 +26,13 @@ #include "qapi/qmp/json-lexer.h" #include "qapi/qmp/json-streamer.h" +struct JSONToken { + JSONTokenType type; + int x; + int y; + char str[]; +}; + typedef struct JSONParserContext { Error *err; @@ -538,6 +545,18 @@ static QObject *parse_value(JSONParserContext *ctxt, va_list *ap) } } +JSONToken *json_token(JSONTokenType type, int x, int y, GString *tokstr) +{ + JSONToken *token = g_malloc(sizeof(JSONToken) + tokstr->len + 1); + + token->type = type; + memcpy(token->str, tokstr->str, tokstr->len); + token->str[tokstr->len] = 0; + token->x = x; + token->y = y; + return token; +} + QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp) { JSONParserContext ctxt = { .buf = tokens }; diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 9210281a65..467bc29413 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -82,13 +82,7 @@ void json_message_process_token(JSONLexer *lexer, GString *input, goto out_emit; } - token = g_malloc(sizeof(JSONToken) + input->len + 1); - token->type = type; - memcpy(token->str, input->str, input->len); - token->str[input->len] = 0; - token->x = x; - token->y = y; - + token = json_token(type, x, y, input); parser->token_size += input->len; g_queue_push_tail(&parser->tokens, token); From patchwork Fri Aug 17 15:05:53 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 959022 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSwV1p1dz9s0n for ; Sat, 18 Aug 2018 02:15:22 +1000 (AEST) Received: from localhost ([::1]:35063 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhPD-0001LR-OI for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:15:19 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50221) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSF-00051I-Ot for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSE-0008N6-9r for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57420 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSE-0008MR-0X for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:22 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9E70526A40; Fri, 17 Aug 2018 15:14:21 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7BE3F7C2E; Fri, 17 Aug 2018 15:14:19 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id EC5111171DCE; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:53 +0200 Message-Id: <20180817150559.16243-55-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 54/60] qobject: Drop superfluous includes of qemu-common.h X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-parser.h | 1 - qobject/json-lexer.c | 1 - qobject/json-streamer.c | 1 - qobject/qbool.c | 1 - qobject/qlist.c | 1 - qobject/qnull.c | 1 - qobject/qnum.c | 1 - qobject/qobject.c | 1 - qobject/qstring.c | 1 - 9 files changed, 9 deletions(-) diff --git a/include/qapi/qmp/json-parser.h b/include/qapi/qmp/json-parser.h index 21b23d7bec..55f75954c3 100644 --- a/include/qapi/qmp/json-parser.h +++ b/include/qapi/qmp/json-parser.h @@ -14,7 +14,6 @@ #ifndef QEMU_JSON_PARSER_H #define QEMU_JSON_PARSER_H -#include "qemu-common.h" #include "qapi/qmp/json-lexer.h" typedef struct JSONToken JSONToken; diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index 431a1ede61..b0ff9304d7 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -12,7 +12,6 @@ */ #include "qemu/osdep.h" -#include "qemu-common.h" #include "qapi/qmp/json-lexer.h" #include "qapi/qmp/json-streamer.h" diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index 467bc29413..da53e770e9 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -12,7 +12,6 @@ */ #include "qemu/osdep.h" -#include "qemu-common.h" #include "qapi/error.h" #include "qapi/qmp/json-lexer.h" #include "qapi/qmp/json-parser.h" diff --git a/qobject/qbool.c b/qobject/qbool.c index b58249925c..06dfc43498 100644 --- a/qobject/qbool.c +++ b/qobject/qbool.c @@ -13,7 +13,6 @@ #include "qemu/osdep.h" #include "qapi/qmp/qbool.h" -#include "qemu-common.h" /** * qbool_from_bool(): Create a new QBool from a bool diff --git a/qobject/qlist.c b/qobject/qlist.c index 37c1c167f1..b3274af88b 100644 --- a/qobject/qlist.c +++ b/qobject/qlist.c @@ -17,7 +17,6 @@ #include "qapi/qmp/qnum.h" #include "qapi/qmp/qstring.h" #include "qemu/queue.h" -#include "qemu-common.h" /** * qlist_new(): Create a new QList diff --git a/qobject/qnull.c b/qobject/qnull.c index f6f55f11ea..00870a1824 100644 --- a/qobject/qnull.c +++ b/qobject/qnull.c @@ -11,7 +11,6 @@ */ #include "qemu/osdep.h" -#include "qemu-common.h" #include "qapi/qmp/qnull.h" QNull qnull_ = { diff --git a/qobject/qnum.c b/qobject/qnum.c index 1501c82832..7012fc57f2 100644 --- a/qobject/qnum.c +++ b/qobject/qnum.c @@ -14,7 +14,6 @@ #include "qemu/osdep.h" #include "qapi/qmp/qnum.h" -#include "qemu-common.h" /** * qnum_from_int(): Create a new QNum from an int64_t diff --git a/qobject/qobject.c b/qobject/qobject.c index cf4b7e229e..878dd76e79 100644 --- a/qobject/qobject.c +++ b/qobject/qobject.c @@ -8,7 +8,6 @@ */ #include "qemu/osdep.h" -#include "qemu-common.h" #include "qapi/qmp/qbool.h" #include "qapi/qmp/qnull.h" #include "qapi/qmp/qnum.h" diff --git a/qobject/qstring.c b/qobject/qstring.c index 0f1510e792..1c6897df00 100644 --- a/qobject/qstring.c +++ b/qobject/qstring.c @@ -12,7 +12,6 @@ #include "qemu/osdep.h" #include "qapi/qmp/qstring.h" -#include "qemu-common.h" /** * qstring_new(): Create a new empty QString From patchwork Fri Aug 17 15:05:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958983 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSZ43L6Lz9sCP for ; Sat, 18 Aug 2018 01:59:24 +1000 (AEST) Received: from localhost ([::1]:34924 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqh9m-00017n-39 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:59:22 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50351) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSJ-00053k-0u for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSG-0008Su-F6 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46526 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSG-0008Qr-4Y for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:24 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id B98B640241CA; Fri, 17 Aug 2018 15:14:23 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 71D632156714; Fri, 17 Aug 2018 15:14:23 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id F16451171DCF; Fri, 17 Aug 2018 17:06:00 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:54 +0200 Message-Id: <20180817150559.16243-56-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:14:23 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:14:23 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 55/60] json: Clean up headers X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The JSON parser has three public headers, json-lexer.h, json-parser.h, json-streamer.h. They all contain stuff that is of no interest outside qobject/json-*.c. Collect the public interface in include/qapi/qmp/json-parser.h, and everything else in qobject/json-parser-int.h. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- include/qapi/qmp/json-parser.h | 36 ++++++++++++--- include/qapi/qmp/json-streamer.h | 46 ------------------- monitor.c | 2 +- qga/main.c | 2 +- qobject/json-lexer.c | 3 +- .../json-lexer.h => qobject/json-parser-int.h | 26 ++++++----- qobject/json-parser.c | 4 +- qobject/json-streamer.c | 4 +- qobject/qjson.c | 2 +- tests/libqtest.c | 2 +- 10 files changed, 51 insertions(+), 76 deletions(-) delete mode 100644 include/qapi/qmp/json-streamer.h rename include/qapi/qmp/json-lexer.h => qobject/json-parser-int.h (62%) diff --git a/include/qapi/qmp/json-parser.h b/include/qapi/qmp/json-parser.h index 55f75954c3..7345a9bd5c 100644 --- a/include/qapi/qmp/json-parser.h +++ b/include/qapi/qmp/json-parser.h @@ -1,5 +1,5 @@ /* - * JSON Parser + * JSON Parser * * Copyright IBM, Corp. 2009 * @@ -11,14 +11,36 @@ * */ -#ifndef QEMU_JSON_PARSER_H -#define QEMU_JSON_PARSER_H +#ifndef QAPI_QMP_JSON_PARSER_H +#define QAPI_QMP_JSON_PARSER_H -#include "qapi/qmp/json-lexer.h" +typedef struct JSONLexer { + int start_state, state; + GString *token; + int x, y; +} JSONLexer; -typedef struct JSONToken JSONToken; +typedef struct JSONMessageParser { + void (*emit)(void *opaque, QObject *json, Error *err); + void *opaque; + va_list *ap; + JSONLexer lexer; + int brace_count; + int bracket_count; + GQueue tokens; + uint64_t token_size; +} JSONMessageParser; -JSONToken *json_token(JSONTokenType type, int x, int y, GString *tokstr); -QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp); +void json_message_parser_init(JSONMessageParser *parser, + void (*emit)(void *opaque, QObject *json, + Error *err), + void *opaque, va_list *ap); + +void json_message_parser_feed(JSONMessageParser *parser, + const char *buffer, size_t size); + +void json_message_parser_flush(JSONMessageParser *parser); + +void json_message_parser_destroy(JSONMessageParser *parser); #endif diff --git a/include/qapi/qmp/json-streamer.h b/include/qapi/qmp/json-streamer.h deleted file mode 100644 index 29950ac37c..0000000000 --- a/include/qapi/qmp/json-streamer.h +++ /dev/null @@ -1,46 +0,0 @@ -/* - * JSON streaming support - * - * Copyright IBM, Corp. 2009 - * - * Authors: - * Anthony Liguori - * - * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. - * See the COPYING.LIB file in the top-level directory. - * - */ - -#ifndef QEMU_JSON_STREAMER_H -#define QEMU_JSON_STREAMER_H - -#include "qapi/qmp/json-lexer.h" - -typedef struct JSONMessageParser -{ - void (*emit)(void *opaque, QObject *json, Error *err); - void *opaque; - va_list *ap; - JSONLexer lexer; - int brace_count; - int bracket_count; - GQueue tokens; - uint64_t token_size; -} JSONMessageParser; - -void json_message_process_token(JSONLexer *lexer, GString *input, - JSONTokenType type, int x, int y); - -void json_message_parser_init(JSONMessageParser *parser, - void (*emit)(void *opaque, QObject *json, - Error *err), - void *opaque, va_list *ap); - -void json_message_parser_feed(JSONMessageParser *parser, - const char *buffer, size_t size); - -void json_message_parser_flush(JSONMessageParser *parser); - -void json_message_parser_destroy(JSONMessageParser *parser); - -#endif diff --git a/monitor.c b/monitor.c index c99dc4737d..9423b4f5e5 100644 --- a/monitor.c +++ b/monitor.c @@ -58,7 +58,7 @@ #include "qapi/qmp/qnum.h" #include "qapi/qmp/qstring.h" #include "qapi/qmp/qjson.h" -#include "qapi/qmp/json-streamer.h" +#include "qapi/qmp/json-parser.h" #include "qapi/qmp/qlist.h" #include "qom/object_interfaces.h" #include "trace-root.h" diff --git a/qga/main.c b/qga/main.c index b74e1241ef..6d70242d05 100644 --- a/qga/main.c +++ b/qga/main.c @@ -18,7 +18,7 @@ #include #include #endif -#include "qapi/qmp/json-streamer.h" +#include "qapi/qmp/json-parser.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qjson.h" #include "qapi/qmp/qstring.h" diff --git a/qobject/json-lexer.c b/qobject/json-lexer.c index b0ff9304d7..023d389d6b 100644 --- a/qobject/json-lexer.c +++ b/qobject/json-lexer.c @@ -12,8 +12,7 @@ */ #include "qemu/osdep.h" -#include "qapi/qmp/json-lexer.h" -#include "qapi/qmp/json-streamer.h" +#include "json-parser-int.h" #define MAX_TOKEN_SIZE (64ULL << 20) diff --git a/include/qapi/qmp/json-lexer.h b/qobject/json-parser-int.h similarity index 62% rename from include/qapi/qmp/json-lexer.h rename to qobject/json-parser-int.h index 1a2dbbb717..442d17996a 100644 --- a/include/qapi/qmp/json-lexer.h +++ b/qobject/json-parser-int.h @@ -1,5 +1,5 @@ /* - * JSON lexer + * JSON Parser * * Copyright IBM, Corp. 2009 * @@ -11,8 +11,10 @@ * */ -#ifndef QEMU_JSON_LEXER_H -#define QEMU_JSON_LEXER_H +#ifndef JSON_PARSER_INT_H +#define JSON_PARSER_INT_H + +#include "qapi/qmp/json-parser.h" typedef enum { JSON_ERROR = 0, /* must be zero */ @@ -30,18 +32,20 @@ typedef enum { JSON_END_OF_INPUT /* must be last */ } JSONTokenType; -typedef struct JSONLexer { - int start_state, state; - GString *token; - int x, y; -} JSONLexer; +typedef struct JSONToken JSONToken; +/* json-lexer.c */ void json_lexer_init(JSONLexer *lexer, bool enable_interpolation); - void json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size); - void json_lexer_flush(JSONLexer *lexer); - void json_lexer_destroy(JSONLexer *lexer); +/* json-streamer.c */ +void json_message_process_token(JSONLexer *lexer, GString *input, + JSONTokenType type, int x, int y); + +/* json-parser.c */ +JSONToken *json_token(JSONTokenType type, int x, int y, GString *tokstr); +QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp); + #endif diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 7849be65e0..8370686bcb 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -22,9 +22,7 @@ #include "qapi/qmp/qnull.h" #include "qapi/qmp/qnum.h" #include "qapi/qmp/qstring.h" -#include "qapi/qmp/json-parser.h" -#include "qapi/qmp/json-lexer.h" -#include "qapi/qmp/json-streamer.h" +#include "json-parser-int.h" struct JSONToken { JSONTokenType type; diff --git a/qobject/json-streamer.c b/qobject/json-streamer.c index da53e770e9..47dd7ea576 100644 --- a/qobject/json-streamer.c +++ b/qobject/json-streamer.c @@ -13,9 +13,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" -#include "qapi/qmp/json-lexer.h" -#include "qapi/qmp/json-parser.h" -#include "qapi/qmp/json-streamer.h" +#include "json-parser-int.h" #define MAX_TOKEN_SIZE (64ULL << 20) #define MAX_TOKEN_COUNT (2ULL << 20) diff --git a/qobject/qjson.c b/qobject/qjson.c index b9ccae2c2a..db36101f3b 100644 --- a/qobject/qjson.c +++ b/qobject/qjson.c @@ -13,7 +13,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" -#include "qapi/qmp/json-streamer.h" +#include "qapi/qmp/json-parser.h" #include "qapi/qmp/qjson.h" #include "qapi/qmp/qbool.h" #include "qapi/qmp/qdict.h" diff --git a/tests/libqtest.c b/tests/libqtest.c index 6a9151eebd..8aac609dec 100644 --- a/tests/libqtest.c +++ b/tests/libqtest.c @@ -24,7 +24,7 @@ #include "qemu-common.h" #include "qemu/cutils.h" #include "qapi/error.h" -#include "qapi/qmp/json-streamer.h" +#include "qapi/qmp/json-parser.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qjson.h" #include "qapi/qmp/qlist.h" From patchwork Fri Aug 17 15:05:55 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958967 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSCx5yxTz9sC2 for ; Sat, 18 Aug 2018 01:43:41 +1000 (AEST) Received: from localhost ([::1]:34834 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqguZ-0004uz-DZ for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:43:39 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50305) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSH-00052B-Su for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008P7-B9 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:25 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:57424 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSF-0008Nb-1a for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:23 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9C43ABB43F; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 55DDE10EE6C9; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 026BA1171DD0; Fri, 17 Aug 2018 17:06:01 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:55 +0200 Message-Id: <20180817150559.16243-57-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 56/60] docs/interop/qmp-spec: How to force known good parser state X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Section "QGA Synchronization" specifies that sending "a raw 0xFF sentinel byte" makes the server "reset its state and discard all pending data prior to the sentinel." What actually happens there is a lexical error, which will produce one ore more error responses. Moreover, it's not specific to QGA. Create new section "Forcing the JSON parser into known-good state" to document the technique properly. Rewrite section "QGA Synchronization" to document just the other direction, i.e. command guest-sync-delimited. Section "Protocol Specification" mentions "synchronization bytes (documented below)". Delete that. While there, fix it not to claim '"Server" is QEMU itself', but '"Server" is either QEMU or the QEMU Guest Agent'. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- docs/interop/qmp-spec.txt | 42 ++++++++++++++++++++++++++------------- 1 file changed, 28 insertions(+), 14 deletions(-) diff --git a/docs/interop/qmp-spec.txt b/docs/interop/qmp-spec.txt index 1566b8ae5e..8f7da0245d 100644 --- a/docs/interop/qmp-spec.txt +++ b/docs/interop/qmp-spec.txt @@ -20,9 +20,9 @@ operating system. 2. Protocol Specification ========================= -This section details the protocol format. For the purpose of this document -"Client" is any application which is using QMP to communicate with QEMU and -"Server" is QEMU itself. +This section details the protocol format. For the purpose of this +document, "Server" is either QEMU or the QEMU Guest Agent, and +"Client" is any application communicating with it via QMP. JSON data structures, when mentioned in this document, are always in the following format: @@ -34,9 +34,8 @@ by the JSON standard: http://www.ietf.org/rfc/rfc7159.txt -The protocol is always encoded in UTF-8 except for synchronization -bytes (documented below); although thanks to json-string escape -sequences, the server will reply using only the strict ASCII subset. +The server expects its input to be encoded in UTF-8, and sends its +output encoded in ASCII. For convenience, json-object members mentioned in this document will be in a certain order. However, in real protocol usage they can be in @@ -215,16 +214,31 @@ Some events are rate-limited to at most one per second. If additional dropped, and the last one is delayed. "Similar" normally means same event type. See qmp-events.txt for details. -2.6 QGA Synchronization +2.6 Forcing the JSON parser into known-good state +------------------------------------------------- + +Incomplete or invalid input can leave the server's JSON parser in a +state where it can't parse additional commands. To get it back into +known-good state, the client should provoke a lexical error. + +The cleanest way to do that is sending an ASCII control character +other than '\t' (horizontal tab), '\r' (carriage return), or '\n' (new +line). + +Sadly, older versions of QEMU can fail to flag this as an error. If a +client needs to deal with them, it should send a 0xFF byte. + +2.7 QGA Synchronization ----------------------- -When using QGA, an additional synchronization feature is built into -the protocol. If the Client sends a raw 0xFF sentinel byte (not valid -JSON), then the Server will reset its state and discard all pending -data prior to the sentinel. Conversely, if the Client makes use of -the 'guest-sync-delimited' command, the Server will send a raw 0xFF -sentinel byte prior to its response, to aid the Client in discarding -any data prior to the sentinel. +When a client connects to QGA over a transport lacking proper +connection semantics such as virtio-serial, QGA may have read partial +input from a previous client. The client needs to force QGA's parser +into known-good state using the previous section's technique. +Moreover, the client may receive output a previous client didn't read. +To help with skipping that output, QGA provides the +'guest-sync-delimited' command. Refer to its documentation for +details. 3. QMP Examples From patchwork Fri Aug 17 15:05:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958998 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSmr0yPLz9s0n for ; Sat, 18 Aug 2018 02:08:43 +1000 (AEST) Received: from localhost ([::1]:35023 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhIn-000416-K6 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:08:41 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50292) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSH-00051y-Nz for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSF-0008OR-4x for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:25 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46744 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSE-0008NS-Rl for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:22 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7C766814FDCE; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 557C22026D6C; Fri, 17 Aug 2018 15:14:22 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 078411171DD1; Fri, 17 Aug 2018 17:06:01 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:56 +0200 Message-Id: <20180817150559.16243-58-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:22 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 57/60] tests/drive_del-test: Fix harmless JSON interpolation bug X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" test_after_failed_device_add() does this: response = qmp("{'execute': 'device_add'," " 'arguments': {" " 'driver': 'virtio-blk-%s'," " 'drive': 'drive0'" "}}", qvirtio_get_dev_type()); Wrong. An interpolation specification must be a JSON token, it doesn't work within JSON string tokens. The code above doesn't use the value of qvirtio_get_dev_type(), and sends arguments {"driver": "virtio-blk-%s", "drive": "drive0"}} The command fails because there is no driver named "virtio-blk-%". Harmless, since the test wants the command to fail. Screwed up in commit 2f84a92ec63. Fix the obvious way. The command now fails because the drive is empty, like it did before commit 2f84a92ec63. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/drive_del-test.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tests/drive_del-test.c b/tests/drive_del-test.c index 2d0b176b36..673c10140f 100644 --- a/tests/drive_del-test.c +++ b/tests/drive_del-test.c @@ -65,9 +65,13 @@ static void test_drive_without_dev(void) static void test_after_failed_device_add(void) { + char driver[32]; QDict *response; QDict *error; + snprintf(driver, sizeof(driver), "virtio-blk-%s", + qvirtio_get_dev_type()); + qtest_start("-drive if=none,id=drive0"); /* Make device_add fail. If this leaks the virtio-blk device then a @@ -75,9 +79,9 @@ static void test_after_failed_device_add(void) */ response = qmp("{'execute': 'device_add'," " 'arguments': {" - " 'driver': 'virtio-blk-%s'," + " 'driver': %s," " 'drive': 'drive0'" - "}}", qvirtio_get_dev_type()); + "}}", driver); g_assert(response); error = qdict_get_qdict(response, "error"); g_assert_cmpstr(qdict_get_try_str(error, "class"), ==, "GenericError"); From patchwork Fri Aug 17 15:05:57 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958951 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sRx92yBbz9sC7 for ; Sat, 18 Aug 2018 01:30:53 +1000 (AEST) Received: from localhost ([::1]:34766 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgiA-0006sb-W6 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:30:51 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46621) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKc-0003O3-7J for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001pB-Oq for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:56286 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKG-0001m1-9s for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5A6DA2635A; Fri, 17 Aug 2018 15:06:07 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 14D5216874; Fri, 17 Aug 2018 15:06:07 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 0C9F01171DD2; Fri, 17 Aug 2018 17:06:01 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:57 +0200 Message-Id: <20180817150559.16243-59-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:07 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 17 Aug 2018 15:06:07 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 58/60] json: Keep interpolation state in JSONParserContext X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The recursive descent parser passes along a pointer to JSONParserContext. It additionally passes a pointer to interpolation state (a va_alist *) as needed to reach its consumer parse_interpolation(). Stuffing the latter pointer into JSONParserContext saves us the trouble of passing it along, so do that. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 59 ++++++++++++++++++++++--------------------- 1 file changed, 30 insertions(+), 29 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 8370686bcb..ad505bdad8 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -36,6 +36,7 @@ typedef struct JSONParserContext Error *err; JSONToken *current; GQueue *buf; + va_list *ap; } JSONParserContext; #define BUG_ON(cond) assert(!(cond)) @@ -49,7 +50,7 @@ typedef struct JSONParserContext * 4) deal with premature EOI */ -static QObject *parse_value(JSONParserContext *ctxt, va_list *ap); +static QObject *parse_value(JSONParserContext *ctxt); /** * Error handler @@ -243,7 +244,7 @@ static JSONToken *parser_context_peek_token(JSONParserContext *ctxt) /** * Parsing rules */ -static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap) +static int parse_pair(JSONParserContext *ctxt, QDict *dict) { QObject *value; QString *key = NULL; @@ -255,7 +256,7 @@ static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap) goto out; } - key = qobject_to(QString, parse_value(ctxt, ap)); + key = qobject_to(QString, parse_value(ctxt)); if (!key) { parse_error(ctxt, peek, "key is not a string in object"); goto out; @@ -272,7 +273,7 @@ static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap) goto out; } - value = parse_value(ctxt, ap); + value = parse_value(ctxt); if (value == NULL) { parse_error(ctxt, token, "Missing value in dict"); goto out; @@ -290,7 +291,7 @@ out: return -1; } -static QObject *parse_object(JSONParserContext *ctxt, va_list *ap) +static QObject *parse_object(JSONParserContext *ctxt) { QDict *dict = NULL; JSONToken *token, *peek; @@ -307,7 +308,7 @@ static QObject *parse_object(JSONParserContext *ctxt, va_list *ap) } if (peek->type != JSON_RCURLY) { - if (parse_pair(ctxt, dict, ap) == -1) { + if (parse_pair(ctxt, dict) == -1) { goto out; } @@ -323,7 +324,7 @@ static QObject *parse_object(JSONParserContext *ctxt, va_list *ap) goto out; } - if (parse_pair(ctxt, dict, ap) == -1) { + if (parse_pair(ctxt, dict) == -1) { goto out; } @@ -344,7 +345,7 @@ out: return NULL; } -static QObject *parse_array(JSONParserContext *ctxt, va_list *ap) +static QObject *parse_array(JSONParserContext *ctxt) { QList *list = NULL; JSONToken *token, *peek; @@ -363,7 +364,7 @@ static QObject *parse_array(JSONParserContext *ctxt, va_list *ap) if (peek->type != JSON_RSQUARE) { QObject *obj; - obj = parse_value(ctxt, ap); + obj = parse_value(ctxt); if (obj == NULL) { parse_error(ctxt, token, "expecting value"); goto out; @@ -383,7 +384,7 @@ static QObject *parse_array(JSONParserContext *ctxt, va_list *ap) goto out; } - obj = parse_value(ctxt, ap); + obj = parse_value(ctxt); if (obj == NULL) { parse_error(ctxt, token, "expecting value"); goto out; @@ -426,7 +427,7 @@ static QObject *parse_keyword(JSONParserContext *ctxt) return NULL; } -static QObject *parse_interpolation(JSONParserContext *ctxt, va_list *ap) +static QObject *parse_interpolation(JSONParserContext *ctxt) { JSONToken *token; @@ -434,29 +435,29 @@ static QObject *parse_interpolation(JSONParserContext *ctxt, va_list *ap) assert(token && token->type == JSON_INTERPOL); if (!strcmp(token->str, "%p")) { - return va_arg(*ap, QObject *); + return va_arg(*ctxt->ap, QObject *); } else if (!strcmp(token->str, "%i")) { - return QOBJECT(qbool_from_bool(va_arg(*ap, int))); + return QOBJECT(qbool_from_bool(va_arg(*ctxt->ap, int))); } else if (!strcmp(token->str, "%d")) { - return QOBJECT(qnum_from_int(va_arg(*ap, int))); + return QOBJECT(qnum_from_int(va_arg(*ctxt->ap, int))); } else if (!strcmp(token->str, "%ld")) { - return QOBJECT(qnum_from_int(va_arg(*ap, long))); + return QOBJECT(qnum_from_int(va_arg(*ctxt->ap, long))); } else if (!strcmp(token->str, "%lld")) { - return QOBJECT(qnum_from_int(va_arg(*ap, long long))); + return QOBJECT(qnum_from_int(va_arg(*ctxt->ap, long long))); } else if (!strcmp(token->str, "%" PRId64)) { - return QOBJECT(qnum_from_int(va_arg(*ap, int64_t))); + return QOBJECT(qnum_from_int(va_arg(*ctxt->ap, int64_t))); } else if (!strcmp(token->str, "%u")) { - return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned int))); + return QOBJECT(qnum_from_uint(va_arg(*ctxt->ap, unsigned int))); } else if (!strcmp(token->str, "%lu")) { - return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned long))); + return QOBJECT(qnum_from_uint(va_arg(*ctxt->ap, unsigned long))); } else if (!strcmp(token->str, "%llu")) { - return QOBJECT(qnum_from_uint(va_arg(*ap, unsigned long long))); + return QOBJECT(qnum_from_uint(va_arg(*ctxt->ap, unsigned long long))); } else if (!strcmp(token->str, "%" PRIu64)) { - return QOBJECT(qnum_from_uint(va_arg(*ap, uint64_t))); + return QOBJECT(qnum_from_uint(va_arg(*ctxt->ap, uint64_t))); } else if (!strcmp(token->str, "%s")) { - return QOBJECT(qstring_from_str(va_arg(*ap, const char *))); + return QOBJECT(qstring_from_str(va_arg(*ctxt->ap, const char *))); } else if (!strcmp(token->str, "%f")) { - return QOBJECT(qnum_from_double(va_arg(*ap, double))); + return QOBJECT(qnum_from_double(va_arg(*ctxt->ap, double))); } parse_error(ctxt, token, "invalid interpolation '%s'", token->str); return NULL; @@ -514,7 +515,7 @@ static QObject *parse_literal(JSONParserContext *ctxt) } } -static QObject *parse_value(JSONParserContext *ctxt, va_list *ap) +static QObject *parse_value(JSONParserContext *ctxt) { JSONToken *token; @@ -526,11 +527,11 @@ static QObject *parse_value(JSONParserContext *ctxt, va_list *ap) switch (token->type) { case JSON_LCURLY: - return parse_object(ctxt, ap); + return parse_object(ctxt); case JSON_LSQUARE: - return parse_array(ctxt, ap); + return parse_array(ctxt); case JSON_INTERPOL: - return parse_interpolation(ctxt, ap); + return parse_interpolation(ctxt); case JSON_INTEGER: case JSON_FLOAT: case JSON_STRING: @@ -557,10 +558,10 @@ JSONToken *json_token(JSONTokenType type, int x, int y, GString *tokstr) QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp) { - JSONParserContext ctxt = { .buf = tokens }; + JSONParserContext ctxt = { .buf = tokens, .ap = ap }; QObject *result; - result = parse_value(&ctxt, ap); + result = parse_value(&ctxt); assert(ctxt.err || g_queue_is_empty(ctxt.buf)); error_propagate(errp, ctxt.err); From patchwork Fri Aug 17 15:05:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958984 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sSbd67vCz9s3x for ; Sat, 18 Aug 2018 02:00:45 +1000 (AEST) Received: from localhost ([::1]:34930 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqhB5-0002po-EY for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 12:00:43 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50200) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgSF-00050h-49 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgSD-0008Mk-WD for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:22 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46728 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgSD-0008M9-NJ for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:14:21 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5F92B819703B; Fri, 17 Aug 2018 15:14:21 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 828842026D6C; Fri, 17 Aug 2018 15:14:19 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 11C801171DD4; Fri, 17 Aug 2018 17:06:01 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:58 +0200 Message-Id: <20180817150559.16243-60-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Fri, 17 Aug 2018 15:14:21 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 59/60] json: Improve safety of qobject_from_jsonf_nofail() & friends X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The JSON parser optionally supports interpolation. This is used to build QObjects by parsing string templates. The templates are C literals, so parse errors (such as invalid interpolation specifications) are actually programming errors. Consequently, the functions providing parsing with interpolation (qobject_from_jsonf_nofail(), qobject_from_vjsonf_nofail(), qdict_from_jsonf_nofail(), qdict_from_vjsonf_nofail()) pass &error_abort to the parser. However, there's another, more dangerous kind of programming error: since we use va_arg() to get the value to interpolate, behavior is undefined when the variable argument isn't consistent with the interpolation specification. The same problem exists with printf()-like functions, and the solution is to have the compiler check consistency. This is what GCC_FMT_ATTR() is about. To enable this type checking for interpolation as well, we carefully chose our interpolation specifications to match printf conversion specifications, and decorate functions parsing templates with GCC_FMT_ATTR(). Note that this only protects against undefined behavior due to type errors. It can't protect against use of invalid interpolation specifications that happen to be valid printf conversion specifications. However, there's still a gaping hole in the type checking: GCC recognizes '%' as start of printf conversion specification anywhere in the template, but the parser recognizes it only outside JSON strings. For instance, if someone were to pass a "{ '%s': %d }" template, GCC would require a char * and an int argument, but the parser would va_arg() only an int argument, resulting in undefined behavior. Avoid undefined behavior by catching the programming error at run time: have the parser recognize and reject '%' in JSON strings. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 12 ++++++++++-- tests/check-qjson.c | 17 +++++++---------- 2 files changed, 17 insertions(+), 12 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index ad505bdad8..273e354ccd 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -144,7 +144,8 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) while (*ptr != quote) { assert(*ptr); - if (*ptr == '\\') { + switch (*ptr) { + case '\\': beg = ptr++; switch (*ptr++) { case '"': @@ -205,7 +206,14 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) parse_error(ctxt, token, "invalid escape sequence in string"); goto out; } - } else { + break; + case '%': + if (ctxt->ap) { + parse_error(ctxt, token, "can't interpolate into string"); + goto out; + } + /* fall through */ + default: cp = mod_utf8_codepoint(ptr, 6, &end); if (cp < 0) { parse_error(ctxt, token, "invalid UTF-8 sequence in string"); diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 344f9f8ed9..89fd6ad6f6 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1037,16 +1037,13 @@ static void interpolation_unknown(void) static void interpolation_string(void) { - QLitObject decoded = QLIT_QLIST(((QLitObject[]){ - QLIT_QSTR("%s"), - QLIT_QSTR("eins"), - {}})); - QObject *qobj; - - /* Dangerous misfeature: % is silently ignored in strings */ - qobj = qobject_from_jsonf_nofail("['%s', %s]", "eins", "zwei"); - g_assert(qlit_equal_qobject(&decoded, qobj)); - qobject_unref(qobj); + if (g_test_subprocess()) { + qobject_from_jsonf_nofail("['%s', %s]", "eins", "zwei"); + } + g_test_trap_subprocess(NULL, 0, 0); + g_test_trap_assert_failed(); + g_test_trap_assert_stderr("*Unexpected error*" + "can't interpolate into string*"); } static void simple_dict(void) From patchwork Fri Aug 17 15:05:59 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 958954 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 41sS1W2DyZz9sC7 for ; Sat, 18 Aug 2018 01:34:39 +1000 (AEST) Received: from localhost ([::1]:34782 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqglo-0003am-N7 for incoming@patchwork.ozlabs.org; Fri, 17 Aug 2018 11:34:36 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46625) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fqgKc-0003O6-7i for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fqgKG-0001pI-QK for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:23 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:46196 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fqgKG-0001mI-C3 for qemu-devel@nongnu.org; Fri, 17 Aug 2018 11:06:08 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 833F5407B390; Fri, 17 Aug 2018 15:06:07 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-116-56.ams2.redhat.com [10.36.116.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5D3451687A; Fri, 17 Aug 2018 15:06:07 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 178CA1171DD5; Fri, 17 Aug 2018 17:06:01 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Date: Fri, 17 Aug 2018 17:05:59 +0200 Message-Id: <20180817150559.16243-61-armbru@redhat.com> In-Reply-To: <20180817150559.16243-1-armbru@redhat.com> References: <20180817150559.16243-1-armbru@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:07 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Fri, 17 Aug 2018 15:06:07 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'armbru@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v2 60/60] json: Support %% in JSON strings when interpolating X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marcandre.lureau@redhat.com, mdroth@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" The previous commit makes JSON strings containing '%' awkward to express in templates: you'd have to mask the '%' with an Unicode escape \u0025. No template currently contains such JSON strings. Support the printf conversion specification %% in JSON strings as a convenience anyway, because it's trivially easy to do. Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- qobject/json-parser.c | 3 ++- tests/check-qjson.c | 4 ++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/qobject/json-parser.c b/qobject/json-parser.c index 273e354ccd..a63e2c33c8 100644 --- a/qobject/json-parser.c +++ b/qobject/json-parser.c @@ -208,10 +208,11 @@ static QString *parse_string(JSONParserContext *ctxt, JSONToken *token) } break; case '%': - if (ctxt->ap) { + if (ctxt->ap && ptr[1] != '%') { parse_error(ctxt, token, "can't interpolate into string"); goto out; } + ptr++; /* fall through */ default: cp = mod_utf8_codepoint(ptr, 6, &end); diff --git a/tests/check-qjson.c b/tests/check-qjson.c index 89fd6ad6f6..d086b146f7 100644 --- a/tests/check-qjson.c +++ b/tests/check-qjson.c @@ -1270,7 +1270,7 @@ static void simple_interpolation(void) QObject *obj; QLitObject decoded = QLIT_QLIST(((QLitObject[]){ QLIT_QNUM(1), - QLIT_QNUM(2), + QLIT_QSTR("100%"), QLIT_QLIST(((QLitObject[]){ QLIT_QNUM(32), QLIT_QNUM(42), @@ -1280,7 +1280,7 @@ static void simple_interpolation(void) embedded_obj = qobject_from_json("[32, 42]", &error_abort); g_assert(embedded_obj != NULL); - obj = qobject_from_jsonf_nofail("[%d, 2, %p]", 1, embedded_obj); + obj = qobject_from_jsonf_nofail("[%d, '100%%', %p]", 1, embedded_obj); g_assert(qlit_equal_qobject(&decoded, obj)); qobject_unref(obj);