From patchwork Mon Jan 22 19:17:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 1889352 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=iOUzvFPz; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TJg5V20jYz23fx for ; Tue, 23 Jan 2024 06:19:42 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rRzo6-0007mt-88; Mon, 22 Jan 2024 14:18:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rRzo5-0007mC-Ae for qemu-devel@nongnu.org; Mon, 22 Jan 2024 14:18:05 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rRzo3-0004aX-Iy for qemu-devel@nongnu.org; Mon, 22 Jan 2024 14:18:05 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1705951082; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=t9fP3udE/oO9hrVEqgrqd+KM9rljgAhtgpCS+D2GXSE=; b=iOUzvFPzSENViJXNr1MwFVws15OhQx8OFTsJhpIFlCLPxzZohaSyorbMTTObLi/7v1SJ9X 2bGLH2AXNcnHC/5cotUHtbnYqrPPJdxsCJlr2NtBzSU8wCGFYsGKRa07Z2JLQbMPYz0zFh XAZZ0ZgqQP9EeCgIBHPL8MU/e2Fdsmw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-225-3C_eGwsdOA2BkWUUox0Kbw-1; Mon, 22 Jan 2024 14:17:59 -0500 X-MC-Unique: 3C_eGwsdOA2BkWUUox0Kbw-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 07D1385A589; Mon, 22 Jan 2024 19:17:58 +0000 (UTC) Received: from thuth-p1g4.redhat.com (unknown [10.39.193.179]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3929A492BC6; Mon, 22 Jan 2024 19:17:55 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, Paolo Bonzini Cc: Stefan Weil , qemu-trivial@nongnu.org Subject: [PATCH 1/5] util/uri: Remove the unused "target" argument from uri_string_unescape() Date: Mon, 22 Jan 2024 20:17:49 +0100 Message-ID: <20240122191753.103118-2-thuth@redhat.com> In-Reply-To: <20240122191753.103118-1-thuth@redhat.com> References: <20240122191753.103118-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.289, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org All callers pass NULL as target, so we can simplify the code by dropping this parameter. Signed-off-by: Thomas Huth Reviewed-by: Philippe Mathieu-Daudé --- include/qemu/uri.h | 2 +- util/uri.c | 32 ++++++++++++++------------------ 2 files changed, 15 insertions(+), 19 deletions(-) diff --git a/include/qemu/uri.h b/include/qemu/uri.h index 1855b764f2..aa54b6f251 100644 --- a/include/qemu/uri.h +++ b/include/qemu/uri.h @@ -79,7 +79,7 @@ URI *uri_parse_raw(const char *str, int raw); int uri_parse_into(URI *uri, const char *str); char *uri_to_string(URI *uri); char *uri_string_escape(const char *str, const char *list); -char *uri_string_unescape(const char *str, int len, char *target); +char *uri_string_unescape(const char *str, int len); void uri_free(URI *uri); /* Single web service query parameter 'name=value'. */ diff --git a/util/uri.c b/util/uri.c index dcb3305236..33b6c7214e 100644 --- a/util/uri.c +++ b/util/uri.c @@ -267,7 +267,7 @@ static int rfc3986_parse_fragment(URI *uri, const char **str) if (uri->cleanup & 2) { uri->fragment = g_strndup(*str, cur - *str); } else { - uri->fragment = uri_string_unescape(*str, cur - *str, NULL); + uri->fragment = uri_string_unescape(*str, cur - *str); } } *str = cur; @@ -368,7 +368,7 @@ static int rfc3986_parse_user_info(URI *uri, const char **str) if (uri->cleanup & 2) { uri->user = g_strndup(*str, cur - *str); } else { - uri->user = uri_string_unescape(*str, cur - *str, NULL); + uri->user = uri_string_unescape(*str, cur - *str); } } *str = cur; @@ -496,7 +496,7 @@ found: if (uri->cleanup & 2) { uri->server = g_strndup(host, cur - host); } else { - uri->server = uri_string_unescape(host, cur - host, NULL); + uri->server = uri_string_unescape(host, cur - host); } } else { uri->server = NULL; @@ -614,7 +614,7 @@ static int rfc3986_parse_path_ab_empty(URI *uri, const char **str) if (uri->cleanup & 2) { uri->path = g_strndup(*str, cur - *str); } else { - uri->path = uri_string_unescape(*str, cur - *str, NULL); + uri->path = uri_string_unescape(*str, cur - *str); } } else { uri->path = NULL; @@ -663,7 +663,7 @@ static int rfc3986_parse_path_absolute(URI *uri, const char **str) if (uri->cleanup & 2) { uri->path = g_strndup(*str, cur - *str); } else { - uri->path = uri_string_unescape(*str, cur - *str, NULL); + uri->path = uri_string_unescape(*str, cur - *str); } } else { uri->path = NULL; @@ -709,7 +709,7 @@ static int rfc3986_parse_path_rootless(URI *uri, const char **str) if (uri->cleanup & 2) { uri->path = g_strndup(*str, cur - *str); } else { - uri->path = uri_string_unescape(*str, cur - *str, NULL); + uri->path = uri_string_unescape(*str, cur - *str); } } else { uri->path = NULL; @@ -755,7 +755,7 @@ static int rfc3986_parse_path_no_scheme(URI *uri, const char **str) if (uri->cleanup & 2) { uri->path = g_strndup(*str, cur - *str); } else { - uri->path = uri_string_unescape(*str, cur - *str, NULL); + uri->path = uri_string_unescape(*str, cur - *str); } } else { uri->path = NULL; @@ -1574,7 +1574,6 @@ static int is_hex(char c) * uri_string_unescape: * @str: the string to unescape * @len: the length in bytes to unescape (or <= 0 to indicate full string) - * @target: optional destination buffer * * Unescaping routine, but does not check that the string is an URI. The * output is a direct unsigned char translation of %XX values (no encoding) @@ -1584,7 +1583,7 @@ static int is_hex(char c) * Returns a copy of the string, but unescaped, will return NULL only in case * of error */ -char *uri_string_unescape(const char *str, int len, char *target) +char *uri_string_unescape(const char *str, int len) { char *ret, *out; const char *in; @@ -1599,11 +1598,8 @@ char *uri_string_unescape(const char *str, int len, char *target) return NULL; } - if (target == NULL) { - ret = g_malloc(len + 1); - } else { - ret = target; - } + ret = g_malloc(len + 1); + in = str; out = ret; while (len > 0) { @@ -2274,14 +2270,14 @@ struct QueryParams *query_params_parse(const char *query) * and consistent with CGI.pm we assume value is "". */ else if (!eq) { - name = uri_string_unescape(query, end - query, NULL); + name = uri_string_unescape(query, end - query); value = NULL; } /* Or if we have "name=" here (works around annoying * problem when calling uri_string_unescape with len = 0). */ else if (eq + 1 == end) { - name = uri_string_unescape(query, eq - query, NULL); + name = uri_string_unescape(query, eq - query); value = g_new0(char, 1); } /* If the '=' character is at the beginning then we have @@ -2293,8 +2289,8 @@ struct QueryParams *query_params_parse(const char *query) /* Otherwise it's "name=value". */ else { - name = uri_string_unescape(query, eq - query, NULL); - value = uri_string_unescape(eq + 1, end - (eq + 1), NULL); + name = uri_string_unescape(query, eq - query); + value = uri_string_unescape(eq + 1, end - (eq + 1)); } /* Append to the parameter set. */ From patchwork Mon Jan 22 19:17:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 1889351 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=EdTl4UOa; 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Mon, 22 Jan 2024 19:18:01 +0000 (UTC) Received: from thuth-p1g4.redhat.com (unknown [10.39.193.179]) by smtp.corp.redhat.com (Postfix) with ESMTP id 19D6D492BC6; Mon, 22 Jan 2024 19:17:59 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, Paolo Bonzini Cc: Stefan Weil , qemu-trivial@nongnu.org Subject: [PATCH 3/5] util/uri: Remove the uri_string_escape() function Date: Mon, 22 Jan 2024 20:17:51 +0100 Message-ID: <20240122191753.103118-4-thuth@redhat.com> In-Reply-To: <20240122191753.103118-1-thuth@redhat.com> References: <20240122191753.103118-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.133.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.289, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org It is not used in QEMU - and if somebody needs this functionality, they can simply use g_uri_escape_string() from the glib instead. Signed-off-by: Thomas Huth --- include/qemu/uri.h | 1 - util/uri.c | 64 ---------------------------------------------- 2 files changed, 65 deletions(-) diff --git a/include/qemu/uri.h b/include/qemu/uri.h index aa54b6f251..c1734d28c3 100644 --- a/include/qemu/uri.h +++ b/include/qemu/uri.h @@ -78,7 +78,6 @@ URI *uri_parse(const char *str); URI *uri_parse_raw(const char *str, int raw); int uri_parse_into(URI *uri, const char *str); char *uri_to_string(URI *uri); -char *uri_string_escape(const char *str, const char *list); char *uri_string_unescape(const char *str, int len); void uri_free(URI *uri); diff --git a/util/uri.c b/util/uri.c index 2a75f535ba..912e406523 100644 --- a/util/uri.c +++ b/util/uri.c @@ -1589,70 +1589,6 @@ char *uri_string_unescape(const char *str, int len) return g_uri_unescape_string(lstr, NULL); } -/** - * uri_string_escape: - * @str: string to escape - * @list: exception list string of chars not to escape - * - * This routine escapes a string to hex, ignoring reserved characters (a-z) - * and the characters in the exception list. - * - * Returns a new escaped string or NULL in case of error. - */ -char *uri_string_escape(const char *str, const char *list) -{ - char *ret, ch; - char *temp; - const char *in; - int len, out; - - if (str == NULL) { - return NULL; - } - if (str[0] == 0) { - return g_strdup(str); - } - len = strlen(str); - if (!(len > 0)) { - return NULL; - } - - len += 20; - ret = g_malloc(len); - in = str; - out = 0; - while (*in != 0) { - if (len - out <= 3) { - temp = realloc2n(ret, &len); - ret = temp; - } - - ch = *in; - - if ((ch != '@') && (!IS_UNRESERVED(ch)) && (!strchr(list, ch))) { - unsigned char val; - ret[out++] = '%'; - val = ch >> 4; - if (val <= 9) { - ret[out++] = '0' + val; - } else { - ret[out++] = 'A' + val - 0xA; - } - val = ch & 0xF; - if (val <= 9) { - ret[out++] = '0' + val; - } else { - ret[out++] = 'A' + val - 0xA; - } - in++; - } else { - ret[out++] = *in++; - } - } - ret[out] = 0; - return ret; -} - /************************************************************************ * * * Public functions * From patchwork Mon Jan 22 19:17:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 1889347 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Mon, 22 Jan 2024 14:18:04 -0500 X-MC-Unique: kPu1U2QUN_-1PvS7w_QqkA-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A36401C05AF5; Mon, 22 Jan 2024 19:18:03 +0000 (UTC) Received: from thuth-p1g4.redhat.com (unknown [10.39.193.179]) by smtp.corp.redhat.com (Postfix) with ESMTP id DBDDD492BC6; Mon, 22 Jan 2024 19:18:01 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, Paolo Bonzini Cc: Stefan Weil , qemu-trivial@nongnu.org Subject: [PATCH 4/5] util/uri: Remove unused functions uri_resolve() and uri_resolve_relative() Date: Mon, 22 Jan 2024 20:17:52 +0100 Message-ID: <20240122191753.103118-5-thuth@redhat.com> In-Reply-To: <20240122191753.103118-1-thuth@redhat.com> References: <20240122191753.103118-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 Received-SPF: pass client-ip=170.10.129.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.289, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org These rather complex functions have never been used since they've been introduced in 2012, so looks like they are not really useful for QEMU. And since the static normalize_uri_path() function is also only used by uri_resolve(), we can remove that function now, too. Signed-off-by: Thomas Huth --- include/qemu/uri.h | 2 - util/uri.c | 689 --------------------------------------------- 2 files changed, 691 deletions(-) diff --git a/include/qemu/uri.h b/include/qemu/uri.h index c1734d28c3..93538b7578 100644 --- a/include/qemu/uri.h +++ b/include/qemu/uri.h @@ -72,8 +72,6 @@ typedef struct URI { } URI; URI *uri_new(void); -char *uri_resolve(const char *URI, const char *base); -char *uri_resolve_relative(const char *URI, const char *base); URI *uri_parse(const char *str); URI *uri_parse_raw(const char *str, int raw); int uri_parse_into(URI *uri, const char *str); diff --git a/util/uri.c b/util/uri.c index 912e406523..5f5ca79792 100644 --- a/util/uri.c +++ b/util/uri.c @@ -1355,212 +1355,6 @@ void uri_free(URI *uri) * * ************************************************************************/ -/** - * normalize_uri_path: - * @path: pointer to the path string - * - * Applies the 5 normalization steps to a path string--that is, RFC 2396 - * Section 5.2, steps 6.c through 6.g. - * - * Normalization occurs directly on the string, no new allocation is done - * - * Returns 0 or an error code - */ -static int normalize_uri_path(char *path) -{ - char *cur, *out; - - if (path == NULL) { - return -1; - } - - /* Skip all initial "/" chars. We want to get to the beginning of the - * first non-empty segment. - */ - cur = path; - while (cur[0] == '/') { - ++cur; - } - if (cur[0] == '\0') { - return 0; - } - - /* Keep everything we've seen so far. */ - out = cur; - - /* - * Analyze each segment in sequence for cases (c) and (d). - */ - while (cur[0] != '\0') { - /* - * c) All occurrences of "./", where "." is a complete path segment, - * are removed from the buffer string. - */ - if ((cur[0] == '.') && (cur[1] == '/')) { - cur += 2; - /* '//' normalization should be done at this point too */ - while (cur[0] == '/') { - cur++; - } - continue; - } - - /* - * d) If the buffer string ends with "." as a complete path segment, - * that "." is removed. - */ - if ((cur[0] == '.') && (cur[1] == '\0')) { - break; - } - - /* Otherwise keep the segment. */ - while (cur[0] != '/') { - if (cur[0] == '\0') { - goto done_cd; - } - (out++)[0] = (cur++)[0]; - } - /* nomalize // */ - while ((cur[0] == '/') && (cur[1] == '/')) { - cur++; - } - - (out++)[0] = (cur++)[0]; - } -done_cd: - out[0] = '\0'; - - /* Reset to the beginning of the first segment for the next sequence. */ - cur = path; - while (cur[0] == '/') { - ++cur; - } - if (cur[0] == '\0') { - return 0; - } - - /* - * Analyze each segment in sequence for cases (e) and (f). - * - * e) All occurrences of "/../", where is a - * complete path segment not equal to "..", are removed from the - * buffer string. Removal of these path segments is performed - * iteratively, removing the leftmost matching pattern on each - * iteration, until no matching pattern remains. - * - * f) If the buffer string ends with "/..", where - * is a complete path segment not equal to "..", that - * "/.." is removed. - * - * To satisfy the "iterative" clause in (e), we need to collapse the - * string every time we find something that needs to be removed. Thus, - * we don't need to keep two pointers into the string: we only need a - * "current position" pointer. - */ - while (1) { - char *segp, *tmp; - - /* At the beginning of each iteration of this loop, "cur" points to - * the first character of the segment we want to examine. - */ - - /* Find the end of the current segment. */ - segp = cur; - while ((segp[0] != '/') && (segp[0] != '\0')) { - ++segp; - } - - /* If this is the last segment, we're done (we need at least two - * segments to meet the criteria for the (e) and (f) cases). - */ - if (segp[0] == '\0') { - break; - } - - /* If the first segment is "..", or if the next segment _isn't_ "..", - * keep this segment and try the next one. - */ - ++segp; - if (((cur[0] == '.') && (cur[1] == '.') && (segp == cur + 3)) || - ((segp[0] != '.') || (segp[1] != '.') || - ((segp[2] != '/') && (segp[2] != '\0')))) { - cur = segp; - continue; - } - - /* If we get here, remove this segment and the next one and back up - * to the previous segment (if there is one), to implement the - * "iteratively" clause. It's pretty much impossible to back up - * while maintaining two pointers into the buffer, so just compact - * the whole buffer now. - */ - - /* If this is the end of the buffer, we're done. */ - if (segp[2] == '\0') { - cur[0] = '\0'; - break; - } - /* Valgrind complained, strcpy(cur, segp + 3); */ - /* string will overlap, do not use strcpy */ - tmp = cur; - segp += 3; - while ((*tmp++ = *segp++) != 0) { - /* No further work */ - } - - /* If there are no previous segments, then keep going from here. */ - segp = cur; - while ((segp > path) && ((--segp)[0] == '/')) { - /* No further work */ - } - if (segp == path) { - continue; - } - - /* "segp" is pointing to the end of a previous segment; find it's - * start. We need to back up to the previous segment and start - * over with that to handle things like "foo/bar/../..". If we - * don't do this, then on the first pass we'll remove the "bar/..", - * but be pointing at the second ".." so we won't realize we can also - * remove the "foo/..". - */ - cur = segp; - while ((cur > path) && (cur[-1] != '/')) { - --cur; - } - } - out[0] = '\0'; - - /* - * g) If the resulting buffer string still begins with one or more - * complete path segments of "..", then the reference is - * considered to be in error. Implementations may handle this - * error by retaining these components in the resolved path (i.e., - * treating them as part of the final URI), by removing them from - * the resolved path (i.e., discarding relative levels above the - * root), or by avoiding traversal of the reference. - * - * We discard them from the final path. - */ - if (path[0] == '/') { - cur = path; - while ((cur[0] == '/') && (cur[1] == '.') && (cur[2] == '.') && - ((cur[3] == '/') || (cur[3] == '\0'))) { - cur += 3; - } - - if (cur != path) { - out = path; - while (cur[0] != '\0') { - (out++)[0] = (cur++)[0]; - } - out[0] = 0; - } - } - - return 0; -} - /** * uri_string_unescape: * @str: the string to unescape @@ -1595,489 +1389,6 @@ char *uri_string_unescape(const char *str, int len) * * ************************************************************************/ -/** - * uri_resolve: - * @URI: the URI instance found in the document - * @base: the base value - * - * Computes he final URI of the reference done by checking that - * the given URI is valid, and building the final URI using the - * base URI. This is processed according to section 5.2 of the - * RFC 2396 - * - * 5.2. Resolving Relative References to Absolute Form - * - * Returns a new URI string (to be freed by the caller) or NULL in case - * of error. - */ -char *uri_resolve(const char *uri, const char *base) -{ - char *val = NULL; - int ret, len, indx, cur, out; - URI *ref = NULL; - URI *bas = NULL; - URI *res = NULL; - - /* - * 1) The URI reference is parsed into the potential four components and - * fragment identifier, as described in Section 4.3. - * - * NOTE that a completely empty URI is treated by modern browsers - * as a reference to "." rather than as a synonym for the current - * URI. Should we do that here? - */ - if (uri == NULL) { - ret = -1; - } else { - if (*uri) { - ref = uri_new(); - ret = uri_parse_into(ref, uri); - } else { - ret = 0; - } - } - if (ret != 0) { - goto done; - } - if ((ref != NULL) && (ref->scheme != NULL)) { - /* - * The URI is absolute don't modify. - */ - val = g_strdup(uri); - goto done; - } - if (base == NULL) { - ret = -1; - } else { - bas = uri_new(); - ret = uri_parse_into(bas, base); - } - if (ret != 0) { - if (ref) { - val = uri_to_string(ref); - } - goto done; - } - if (ref == NULL) { - /* - * the base fragment must be ignored - */ - g_free(bas->fragment); - bas->fragment = NULL; - val = uri_to_string(bas); - goto done; - } - - /* - * 2) If the path component is empty and the scheme, authority, and - * query components are undefined, then it is a reference to the - * current document and we are done. Otherwise, the reference URI's - * query and fragment components are defined as found (or not found) - * within the URI reference and not inherited from the base URI. - * - * NOTE that in modern browsers, the parsing differs from the above - * in the following aspect: the query component is allowed to be - * defined while still treating this as a reference to the current - * document. - */ - res = uri_new(); - if ((ref->scheme == NULL) && (ref->path == NULL) && - ((ref->authority == NULL) && (ref->server == NULL))) { - res->scheme = g_strdup(bas->scheme); - if (bas->authority != NULL) { - res->authority = g_strdup(bas->authority); - } else if (bas->server != NULL) { - res->server = g_strdup(bas->server); - res->user = g_strdup(bas->user); - res->port = bas->port; - } - res->path = g_strdup(bas->path); - if (ref->query != NULL) { - res->query = g_strdup(ref->query); - } else { - res->query = g_strdup(bas->query); - } - res->fragment = g_strdup(ref->fragment); - goto step_7; - } - - /* - * 3) If the scheme component is defined, indicating that the reference - * starts with a scheme name, then the reference is interpreted as an - * absolute URI and we are done. Otherwise, the reference URI's - * scheme is inherited from the base URI's scheme component. - */ - if (ref->scheme != NULL) { - val = uri_to_string(ref); - goto done; - } - res->scheme = g_strdup(bas->scheme); - - res->query = g_strdup(ref->query); - res->fragment = g_strdup(ref->fragment); - - /* - * 4) If the authority component is defined, then the reference is a - * network-path and we skip to step 7. Otherwise, the reference - * URI's authority is inherited from the base URI's authority - * component, which will also be undefined if the URI scheme does not - * use an authority component. - */ - if ((ref->authority != NULL) || (ref->server != NULL)) { - if (ref->authority != NULL) { - res->authority = g_strdup(ref->authority); - } else { - res->server = g_strdup(ref->server); - res->user = g_strdup(ref->user); - res->port = ref->port; - } - res->path = g_strdup(ref->path); - goto step_7; - } - if (bas->authority != NULL) { - res->authority = g_strdup(bas->authority); - } else if (bas->server != NULL) { - res->server = g_strdup(bas->server); - res->user = g_strdup(bas->user); - res->port = bas->port; - } - - /* - * 5) If the path component begins with a slash character ("/"), then - * the reference is an absolute-path and we skip to step 7. - */ - if ((ref->path != NULL) && (ref->path[0] == '/')) { - res->path = g_strdup(ref->path); - goto step_7; - } - - /* - * 6) If this step is reached, then we are resolving a relative-path - * reference. The relative path needs to be merged with the base - * URI's path. Although there are many ways to do this, we will - * describe a simple method using a separate string buffer. - * - * Allocate a buffer large enough for the result string. - */ - len = 2; /* extra / and 0 */ - if (ref->path != NULL) { - len += strlen(ref->path); - } - if (bas->path != NULL) { - len += strlen(bas->path); - } - res->path = g_malloc(len); - res->path[0] = 0; - - /* - * a) All but the last segment of the base URI's path component is - * copied to the buffer. In other words, any characters after the - * last (right-most) slash character, if any, are excluded. - */ - cur = 0; - out = 0; - if (bas->path != NULL) { - while (bas->path[cur] != 0) { - while ((bas->path[cur] != 0) && (bas->path[cur] != '/')) { - cur++; - } - if (bas->path[cur] == 0) { - break; - } - - cur++; - while (out < cur) { - res->path[out] = bas->path[out]; - out++; - } - } - } - res->path[out] = 0; - - /* - * b) The reference's path component is appended to the buffer - * string. - */ - if (ref->path != NULL && ref->path[0] != 0) { - indx = 0; - /* - * Ensure the path includes a '/' - */ - if ((out == 0) && (bas->server != NULL)) { - res->path[out++] = '/'; - } - while (ref->path[indx] != 0) { - res->path[out++] = ref->path[indx++]; - } - } - res->path[out] = 0; - - /* - * Steps c) to h) are really path normalization steps - */ - normalize_uri_path(res->path); - -step_7: - - /* - * 7) The resulting URI components, including any inherited from the - * base URI, are recombined to give the absolute form of the URI - * reference. - */ - val = uri_to_string(res); - -done: - uri_free(ref); - uri_free(bas); - uri_free(res); - return val; -} - -/** - * uri_resolve_relative: - * @URI: the URI reference under consideration - * @base: the base value - * - * Expresses the URI of the reference in terms relative to the - * base. Some examples of this operation include: - * base = "http://site1.com/docs/book1.html" - * URI input URI returned - * docs/pic1.gif pic1.gif - * docs/img/pic1.gif img/pic1.gif - * img/pic1.gif ../img/pic1.gif - * http://site1.com/docs/pic1.gif pic1.gif - * http://site2.com/docs/pic1.gif http://site2.com/docs/pic1.gif - * - * base = "docs/book1.html" - * URI input URI returned - * docs/pic1.gif pic1.gif - * docs/img/pic1.gif img/pic1.gif - * img/pic1.gif ../img/pic1.gif - * http://site1.com/docs/pic1.gif http://site1.com/docs/pic1.gif - * - * - * Note: if the URI reference is really weird or complicated, it may be - * worthwhile to first convert it into a "nice" one by calling - * uri_resolve (using 'base') before calling this routine, - * since this routine (for reasonable efficiency) assumes URI has - * already been through some validation. - * - * Returns a new URI string (to be freed by the caller) or NULL in case - * error. - */ -char *uri_resolve_relative(const char *uri, const char *base) -{ - char *val = NULL; - int ret; - int ix; - int pos = 0; - int nbslash = 0; - int len; - URI *ref = NULL; - URI *bas = NULL; - char *bptr, *uptr, *vptr; - int remove_path = 0; - - if ((uri == NULL) || (*uri == 0)) { - return NULL; - } - - /* - * First parse URI into a standard form - */ - ref = uri_new(); - /* If URI not already in "relative" form */ - if (uri[0] != '.') { - ret = uri_parse_into(ref, uri); - if (ret != 0) { - goto done; /* Error in URI, return NULL */ - } - } else { - ref->path = g_strdup(uri); - } - - /* - * Next parse base into the same standard form - */ - if ((base == NULL) || (*base == 0)) { - val = g_strdup(uri); - goto done; - } - bas = uri_new(); - if (base[0] != '.') { - ret = uri_parse_into(bas, base); - if (ret != 0) { - goto done; /* Error in base, return NULL */ - } - } else { - bas->path = g_strdup(base); - } - - /* - * If the scheme / server on the URI differs from the base, - * just return the URI - */ - if ((ref->scheme != NULL) && - ((bas->scheme == NULL) || (strcmp(bas->scheme, ref->scheme)) || - (strcmp(bas->server, ref->server)))) { - val = g_strdup(uri); - goto done; - } - if (bas->path == ref->path || - (bas->path && ref->path && !strcmp(bas->path, ref->path))) { - val = g_strdup(""); - goto done; - } - if (bas->path == NULL) { - val = g_strdup(ref->path); - goto done; - } - if (ref->path == NULL) { - ref->path = (char *)"/"; - remove_path = 1; - } - - /* - * At this point (at last!) we can compare the two paths - * - * First we take care of the special case where either of the - * two path components may be missing (bug 316224) - */ - if (bas->path == NULL) { - if (ref->path != NULL) { - uptr = ref->path; - if (*uptr == '/') { - uptr++; - } - /* exception characters from uri_to_string */ - val = uri_string_escape(uptr, "/;&=+$,"); - } - goto done; - } - bptr = bas->path; - if (ref->path == NULL) { - for (ix = 0; bptr[ix] != 0; ix++) { - if (bptr[ix] == '/') { - nbslash++; - } - } - uptr = NULL; - len = 1; /* this is for a string terminator only */ - } else { - /* - * Next we compare the two strings and find where they first differ - */ - if ((ref->path[pos] == '.') && (ref->path[pos + 1] == '/')) { - pos += 2; - } - if ((*bptr == '.') && (bptr[1] == '/')) { - bptr += 2; - } else if ((*bptr == '/') && (ref->path[pos] != '/')) { - bptr++; - } - while ((bptr[pos] == ref->path[pos]) && (bptr[pos] != 0)) { - pos++; - } - - if (bptr[pos] == ref->path[pos]) { - val = g_strdup(""); - goto done; /* (I can't imagine why anyone would do this) */ - } - - /* - * In URI, "back up" to the last '/' encountered. This will be the - * beginning of the "unique" suffix of URI - */ - ix = pos; - if ((ref->path[ix] == '/') && (ix > 0)) { - ix--; - } else if ((ref->path[ix] == 0) && (ix > 1) - && (ref->path[ix - 1] == '/')) { - ix -= 2; - } - for (; ix > 0; ix--) { - if (ref->path[ix] == '/') { - break; - } - } - if (ix == 0) { - uptr = ref->path; - } else { - ix++; - uptr = &ref->path[ix]; - } - - /* - * In base, count the number of '/' from the differing point - */ - if (bptr[pos] != ref->path[pos]) { /* check for trivial URI == base */ - for (; bptr[ix] != 0; ix++) { - if (bptr[ix] == '/') { - nbslash++; - } - } - } - len = strlen(uptr) + 1; - } - - if (nbslash == 0) { - if (uptr != NULL) { - /* exception characters from uri_to_string */ - val = uri_string_escape(uptr, "/;&=+$,"); - } - goto done; - } - - /* - * Allocate just enough space for the returned string - - * length of the remainder of the URI, plus enough space - * for the "../" groups, plus one for the terminator - */ - val = g_malloc(len + 3 * nbslash); - vptr = val; - /* - * Put in as many "../" as needed - */ - for (; nbslash > 0; nbslash--) { - *vptr++ = '.'; - *vptr++ = '.'; - *vptr++ = '/'; - } - /* - * Finish up with the end of the URI - */ - if (uptr != NULL) { - if ((vptr > val) && (len > 0) && (uptr[0] == '/') && - (vptr[-1] == '/')) { - memcpy(vptr, uptr + 1, len - 1); - vptr[len - 2] = 0; - } else { - memcpy(vptr, uptr, len); - vptr[len - 1] = 0; - } - } else { - vptr[len - 1] = 0; - } - - /* escape the freshly-built path */ - vptr = val; - /* exception characters from uri_to_string */ - val = uri_string_escape(vptr, "/;&=+$,"); - g_free(vptr); - -done: - /* - * Free the working variables - */ - if (remove_path != 0) { - ref->path = NULL; - } - uri_free(ref); - uri_free(bas); - - return val; -} - /* * Utility functions to help parse and assemble query strings. */ From patchwork Mon Jan 22 19:17:53 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 1889349 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Signed-off-by: Thomas Huth Reviewed-by: Philippe Mathieu-Daudé --- util/uri.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/util/uri.c b/util/uri.c index 5f5ca79792..2deab91da3 100644 --- a/util/uri.c +++ b/util/uri.c @@ -163,19 +163,6 @@ static void uri_clean(URI *uri); ((*(p) == '+')) || ((*(p) == ',')) || ((*(p) == ';')) || \ ((*(p) == '=')) || ((*(p) == '\''))) -/* - * gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@" - */ -#define ISA_GEN_DELIM(p) \ - (((*(p) == ':')) || ((*(p) == '/')) || ((*(p) == '?')) || \ - ((*(p) == '#')) || ((*(p) == '[')) || ((*(p) == ']')) || \ - ((*(p) == '@'))) - -/* - * reserved = gen-delims / sub-delims - */ -#define ISA_RESERVED(p) (ISA_GEN_DELIM(p) || (ISA_SUB_DELIM(p))) - /* * unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" */