From patchwork Mon Mar 19 17:19:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Zheng X-Patchwork-Id: 887808 X-Patchwork-Delegate: pablo@netfilter.org Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netfilter-devel-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="elWRYIUZ"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 404jW15YZ7z9sDX for ; Tue, 20 Mar 2018 04:20:13 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966507AbeCSRUL (ORCPT ); Mon, 19 Mar 2018 13:20:11 -0400 Received: from mail-pg0-f67.google.com ([74.125.83.67]:42375 "EHLO mail-pg0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966420AbeCSRUD (ORCPT ); Mon, 19 Mar 2018 13:20:03 -0400 Received: by mail-pg0-f67.google.com with SMTP id o14so2908030pgv.9 for ; Mon, 19 Mar 2018 10:20:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id; bh=3APgYcK2GR8kXhoWG0uznAZ4dn+tBP3AfqlCZrFkdgk=; b=elWRYIUZsVZFwpw8edgB9KGCb4+Z7kisz7dVYj7zCHWEbDWdOQYm7F7Pgm733UyLye TMNFHKY1UCmcWbge/SAXI4kDkLVnvCqVhfzXGo0QTbta3R89o5+NruXYgKzX/1p+Xw/0 XlbdmgarinPkvn3FLc/4f4MDQ00ajpqWIBpUV0tQIEMBw4WMIMoN2BV82YU6q9CwH1EZ i7ZaP/MeWYtgU3GWdZcGlpAhCHegVwk2yUc5po/skHvoew8WnowQyl1PDvZLuyfPv53Q CXqkCxqz/bsPsRHr9Dre965YcXz6tG12UznjpDRmzLCdq3XuPwWPRFMQe3+wsb7XH/YK 5wOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id; bh=3APgYcK2GR8kXhoWG0uznAZ4dn+tBP3AfqlCZrFkdgk=; b=cfybjmwd0W9yJ1UHkKuVN/4rQn2HbOTwe4Yfz8R0rKRHgrCqVR2nEqeCzoXZTwNjT0 Uwc7ZIEFEn3EV8A5CXfv+Fe9VHfF8UhxqXp3pN6sPLk3Penk/joshKZ2E3qyOu20/Ovt yOIiaBbmjL6W+I6QE1CVfgjeXx4OpdQf5gY0pwhCBpLm5olj3gqoD8GXOg7XeSxX8Jny 2FVx4FOrawNqhSb58UujpBBcedmeKfwhoRIVZifJfC6ZA3vuVTeNaAjsfgHH/Zp50xcc vuK0hnY6lutOYTvuP87g5K8ANGiAgS6Z0LU8+RJ/3+3RJu/YSsLVwguxAgAPBzXJ9clW mfUw== X-Gm-Message-State: AElRT7FgKxfftyCoQSoZ1Pb/Sqv9PV5su4IBjeiahPn/+mdmPHUPI/Sw gYDgqu/Z/vduJHwtFQws7lL1/d8v X-Google-Smtp-Source: AG47ELs5YTP7KWC9JbjIEkLHO3jPliX87FP31OwYhH+Q8VWZNab0okVvQ5ompD5bds5iE2X6wg2RNg== X-Received: by 10.99.171.72 with SMTP id k8mr9888873pgp.355.1521480002178; Mon, 19 Mar 2018 10:20:02 -0700 (PDT) Received: from zhengy-pc.ipads-lab.se.sjtu.edu.cn ([112.65.223.55]) by smtp.googlemail.com with ESMTPSA id t1sm779695pgs.47.2018.03.19.10.20.00 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 19 Mar 2018 10:20:01 -0700 (PDT) From: Yang Zheng To: netfilter-devel@vger.kernel.org Subject: [PATCH libnftnl] examples: add nft-ct-helper-{add,get,del} Date: Tue, 20 Mar 2018 01:19:42 +0800 Message-Id: <20180319171942.15238-1-tomsun.0.7@gmail.com> X-Mailer: git-send-email 2.16.2 Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org nft-ct-helper-{add,get,del}: add, get, or delete ct helper objects from the specified table. Signed-off-by: Yang Zheng Acked-by: Arturo Borrero Gonzalez --- examples/Makefile.am | 14 +++- examples/nft-ct-helper-add.c | 149 ++++++++++++++++++++++++++++++++++++++++++ examples/nft-ct-helper-del.c | 124 +++++++++++++++++++++++++++++++++++ examples/nft-ct-helper-get.c | 150 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 436 insertions(+), 1 deletion(-) create mode 100644 examples/nft-ct-helper-add.c create mode 100644 examples/nft-ct-helper-del.c create mode 100644 examples/nft-ct-helper-get.c diff --git a/examples/Makefile.am b/examples/Makefile.am index c0d84eb..96112e7 100644 --- a/examples/Makefile.am +++ b/examples/Makefile.am @@ -30,7 +30,10 @@ check_PROGRAMS = nft-table-add \ nft-flowtable-get \ nft-ruleset-get \ nft-ruleset-parse-file \ - nft-compat-get + nft-compat-get \ + nft-ct-helper-add \ + nft-ct-helper-get \ + nft-ct-helper-del nft_table_add_SOURCES = nft-table-add.c nft_table_add_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS} @@ -124,3 +127,12 @@ nft_ruleset_parse_file_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS} nft_compat_get_SOURCES = nft-compat-get.c nft_compat_get_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS} + +nft_ct_helper_add_SOURCES = nft-ct-helper-add.c +nft_ct_helper_add_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS} + +nft_ct_helper_get_SOURCES = nft-ct-helper-get.c +nft_ct_helper_get_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS} + +nft_ct_helper_del_SOURCES = nft-ct-helper-del.c +nft_ct_helper_del_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS} diff --git a/examples/nft-ct-helper-add.c b/examples/nft-ct-helper-add.c new file mode 100644 index 0000000..397443b --- /dev/null +++ b/examples/nft-ct-helper-add.c @@ -0,0 +1,149 @@ +/* + * (C) 2012-2016 by Pablo Neira Ayuso + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include + +#include +#include + +#include +#include + +static uint16_t parse_family(char *str, const char *option) +{ + if (strcmp(str, "ip") == 0) + return NFPROTO_IPV4; + else if (strcmp(str, "ip6") == 0) + return NFPROTO_IPV6; + else if (strcmp(str, "inet") == 0) + return NFPROTO_INET; + else { + fprintf(stderr, "Unknown %s: ip, ip6, inet\n", option); + exit(EXIT_FAILURE); + } +} + +static uint8_t parse_l4proto(char *str) +{ + if (strcmp(str, "udp") == 0) + return IPPROTO_UDP; + else if (strcmp(str, "tcp") == 0) + return IPPROTO_TCP; + else { + fprintf(stderr, "Unknown l4proto: tcp, udp\n"); + exit(EXIT_FAILURE); + } + return IPPROTO_TCP; +} + +static struct nftnl_obj *ct_helper_add_parse(int argc, char *argv[]) +{ + struct nftnl_obj *t; + uint16_t family, l3proto; + uint8_t l4proto; + + t = nftnl_obj_alloc(); + if (t == NULL) { + perror("OOM"); + return NULL; + } + + family = parse_family(argv[1], "family"); + nftnl_obj_set_u32(t, NFTNL_OBJ_FAMILY, family); + nftnl_obj_set_u32(t, NFTNL_OBJ_TYPE, NFT_OBJECT_CT_HELPER); + nftnl_obj_set_str(t, NFTNL_OBJ_TABLE, argv[2]); + nftnl_obj_set_str(t, NFTNL_OBJ_NAME, argv[3]); + + nftnl_obj_set_str(t, NFTNL_OBJ_CT_HELPER_NAME, argv[4]); + l4proto = parse_l4proto(argv[5]); + nftnl_obj_set_u8(t, NFTNL_OBJ_CT_HELPER_L4PROTO, l4proto); + if (argc == 7) { + l3proto = parse_family(argv[6], "l3proto"); + nftnl_obj_set_u16(t, NFTNL_OBJ_CT_HELPER_L3PROTO, l3proto); + } + + return t; +} + +int main(int argc, char *argv[]) +{ + struct nftnl_obj *t; + uint32_t seq, obj_seq, family, portid; + struct mnl_nlmsg_batch *batch; + char buf[MNL_SOCKET_BUFFER_SIZE]; + struct nlmsghdr *nlh; + struct mnl_socket *nl; + int ret; + + if (argc < 6) { + fprintf(stderr, "%s [l3proto]\n", argv[0]); + exit(EXIT_FAILURE); + } + + t = ct_helper_add_parse(argc, argv); + if (t == NULL) + exit(EXIT_FAILURE); + + seq = time(NULL); + batch = mnl_nlmsg_batch_start(buf, sizeof(buf)); + + nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++); + mnl_nlmsg_batch_next(batch); + + obj_seq = seq; + family = nftnl_obj_get_u32(t, NFTNL_OBJ_FAMILY); + nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch), + NFT_MSG_NEWOBJ, family, NLM_F_CREATE | NLM_F_ACK, seq++); + + nftnl_obj_nlmsg_build_payload(nlh, t); + nftnl_obj_free(t); + mnl_nlmsg_batch_next(batch); + + nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++); + mnl_nlmsg_batch_next(batch); + + nl = mnl_socket_open(NETLINK_NETFILTER); + if (nl == NULL) { + perror("mnl_socket_open"); + exit(EXIT_FAILURE); + } + + if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) { + perror("mnl_socket_bind"); + exit(EXIT_FAILURE); + } + portid = mnl_socket_get_portid(nl); + + if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch), + mnl_nlmsg_batch_size(batch)) < 0) { + perror("mnl_socket_send"); + exit(EXIT_FAILURE); + } + + mnl_nlmsg_batch_stop(batch); + + ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); + while (ret > 0) { + ret = mnl_cb_run(buf, ret, obj_seq, portid, NULL, NULL); + if (ret <= 0) { + break; + } + ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); + } + if (ret == -1) { + perror("error"); + exit(EXIT_FAILURE); + } + mnl_socket_close(nl); + + return EXIT_SUCCESS; +} diff --git a/examples/nft-ct-helper-del.c b/examples/nft-ct-helper-del.c new file mode 100644 index 0000000..fda3026 --- /dev/null +++ b/examples/nft-ct-helper-del.c @@ -0,0 +1,124 @@ +/* + * (C) 2012 by Pablo Neira Ayuso + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This software has been sponsored by Sophos Astaro + */ + +#include +#include +#include +#include + +#include +#include + +#include +#include + +static struct nftnl_obj *ct_helper_del_parse(int argc, char *argv[]) +{ + struct nftnl_obj *t; + uint16_t family; + + if (strcmp(argv[1], "ip") == 0) + family = NFPROTO_IPV4; + else if (strcmp(argv[1], "ip6") == 0) + family = NFPROTO_IPV6; + else if (strcmp(argv[1], "inet") == 0) + family = NFPROTO_INET; + else { + fprintf(stderr, "Unknown family: ip, ip6, inet\n"); + return NULL; + } + + t = nftnl_obj_alloc(); + if (t == NULL) { + perror("OOM"); + return NULL; + } + + nftnl_obj_set_str(t, NFTNL_OBJ_TABLE, argv[2]); + nftnl_obj_set_str(t, NFTNL_OBJ_NAME, argv[3]); + nftnl_obj_set_u32(t, NFTNL_OBJ_TYPE, NFT_OBJECT_CT_HELPER); + nftnl_obj_set_u32(t, NFTNL_OBJ_FAMILY, family); + + return t; +} + +int main(int argc, char *argv[]) +{ + struct mnl_socket *nl; + char buf[MNL_SOCKET_BUFFER_SIZE]; + struct nlmsghdr *nlh; + uint32_t portid, seq, obj_seq, family; + struct nftnl_obj *t; + struct mnl_nlmsg_batch *batch; + int ret; + + if (argc != 4) { + fprintf(stderr, "%s
\n", argv[0]); + exit(EXIT_FAILURE); + } + + t = ct_helper_del_parse(argc, argv); + if (t == NULL) + exit(EXIT_FAILURE); + + seq = time(NULL); + batch = mnl_nlmsg_batch_start(buf, sizeof(buf)); + + nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++); + mnl_nlmsg_batch_next(batch); + + obj_seq = seq; + family = nftnl_obj_get_u32(t, NFTNL_OBJ_FAMILY); + nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch), + NFT_MSG_DELOBJ, family, NLM_F_ACK, + seq++); + nftnl_obj_nlmsg_build_payload(nlh, t); + mnl_nlmsg_batch_next(batch); + nftnl_obj_free(t); + + nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++); + mnl_nlmsg_batch_next(batch); + + nl = mnl_socket_open(NETLINK_NETFILTER); + if (nl == NULL) { + perror("mnl_socket_open"); + exit(EXIT_FAILURE); + } + + if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) { + perror("mnl_socket_bind"); + exit(EXIT_FAILURE); + } + portid = mnl_socket_get_portid(nl); + + if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch), + mnl_nlmsg_batch_size(batch)) < 0) { + perror("mnl_socket_send"); + exit(EXIT_FAILURE); + } + + mnl_nlmsg_batch_stop(batch); + + ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); + while (ret > 0) { + ret = mnl_cb_run(buf, ret, obj_seq, portid, NULL, NULL); + if (ret <= 0) + break; + ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); + } + if (ret == -1) { + perror("error"); + exit(EXIT_FAILURE); + } + mnl_socket_close(nl); + + return EXIT_SUCCESS; +} diff --git a/examples/nft-ct-helper-get.c b/examples/nft-ct-helper-get.c new file mode 100644 index 0000000..94bd0cd --- /dev/null +++ b/examples/nft-ct-helper-get.c @@ -0,0 +1,150 @@ +/* + * (C) 2012 by Pablo Neira Ayuso + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This software has been sponsored by Sophos Astaro + */ + + +#include +#include +#include +#include + +#include +#include + +#include +#include + +static int obj_cb(const struct nlmsghdr *nlh, void *data) +{ + struct nftnl_obj *t; + char buf[4096]; + uint32_t *type = data; + + t = nftnl_obj_alloc(); + if (t == NULL) { + perror("OOM"); + goto err; + } + + if (nftnl_obj_nlmsg_parse(nlh, t) < 0) { + perror("nftnl_obj_nlmsg_parse"); + goto err_free; + } + + nftnl_obj_snprintf(buf, sizeof(buf), t, *type, 0); + printf("%s\n", buf); + +err_free: + nftnl_obj_free(t); +err: + return MNL_CB_OK; +} + +int main(int argc, char *argv[]) +{ + struct mnl_socket *nl; + char buf[MNL_SOCKET_BUFFER_SIZE]; + struct nlmsghdr *nlh; + uint32_t portid, seq, family; + struct nftnl_obj *t = NULL; + int ret; + uint32_t type = NFTNL_OUTPUT_DEFAULT; + + if (argc < 3 || argc > 5) { + fprintf(stderr, "%s
[] []\n", + argv[0]); + return EXIT_FAILURE; + } + + if (strcmp(argv[1], "ip") == 0) + family = NFPROTO_IPV4; + else if (strcmp(argv[1], "ip6") == 0) + family = NFPROTO_IPV6; + else if (strcmp(argv[1], "inet") == 0) + family = NFPROTO_INET; + else if (strcmp(argv[1], "unspec") == 0) + family = NFPROTO_UNSPEC; + else { + fprintf(stderr, "Unknown family: ip, ip6, inet, unspec"); + exit(EXIT_FAILURE); + } + + if (strcmp(argv[argc-1], "xml") == 0) { + type = NFTNL_OUTPUT_XML; + argv[argc-1] = NULL; + argc--; + }else if (strcmp(argv[argc-1], "json") == 0) { + type = NFTNL_OUTPUT_JSON; + argv[argc-1] = NULL; + argc--; + } else if (strcmp(argv[argc - 1], "default") == 0) { + argc--; + } + + if (argc == 3 || argc == 4) { + t = nftnl_obj_alloc(); + if (t == NULL) { + perror("OOM"); + exit(EXIT_FAILURE); + } + } + + seq = time(NULL); + nftnl_obj_set_u32(t, NFTNL_OBJ_TYPE, NFT_OBJECT_CT_HELPER); + if (argc < 4) { + nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_GETOBJ, family, + NLM_F_DUMP, seq); + if (argc == 3) { + nftnl_obj_set(t, NFTNL_OBJ_TABLE, argv[2]); + nftnl_obj_nlmsg_build_payload(nlh, t); + nftnl_obj_free(t); + } + } else { + nftnl_obj_set(t, NFTNL_OBJ_TABLE, argv[2]); + nftnl_obj_set(t, NFTNL_OBJ_NAME, argv[3]); + + nlh = nftnl_nlmsg_build_hdr(buf, NFT_MSG_GETOBJ, family, + NLM_F_ACK, seq); + nftnl_obj_nlmsg_build_payload(nlh, t); + nftnl_obj_free(t); + } + + nl = mnl_socket_open(NETLINK_NETFILTER); + if (nl == NULL) { + perror("mnl_socket_open"); + exit(EXIT_FAILURE); + } + + if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) { + perror("mnl_socket_bind"); + exit(EXIT_FAILURE); + } + portid = mnl_socket_get_portid(nl); + + if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) { + perror("mnl_socket_send"); + exit(EXIT_FAILURE); + } + + ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); + while (ret > 0) { + ret = mnl_cb_run(buf, ret, seq, portid, obj_cb, &type); + if (ret <= 0) + break; + ret = mnl_socket_recvfrom(nl, buf, sizeof(buf)); + } + if (ret == -1) { + perror("error"); + exit(EXIT_FAILURE); + } + mnl_socket_close(nl); + + return EXIT_SUCCESS; +}