From 498072412c174bfb3e68f1931f5b716a9dc4bbbb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Neira=20Ayuso?= Date: Sat, 8 Mar 2014 16:22:33 +0100 Subject: examples: nft-rule-insert: fix and merge it to nft-rule-add Merged the example for inserting rules and fixed for using the correct header. Signed-off-by: Alvaro Neira Ayuso Signed-off-by: Pablo Neira Ayuso --- examples/Makefile.am | 1 - examples/nft-rule-add.c | 15 +++- examples/nft-rule-insert.c | 204 --------------------------------------------- 3 files changed, 12 insertions(+), 208 deletions(-) delete mode 100644 examples/nft-rule-insert.c diff --git a/examples/Makefile.am b/examples/Makefile.am index b433b2d..54b1dfb 100644 --- a/examples/Makefile.am +++ b/examples/Makefile.am @@ -12,7 +12,6 @@ check_PROGRAMS = nft-table-add \ nft-chain-del \ nft-chain-get \ nft-rule-add \ - nft-rule-insert \ nft-rule-xml-add \ nft-rule-json-add \ nft-rule-del \ diff --git a/examples/nft-rule-add.c b/examples/nft-rule-add.c index 21b3bf8..6961d0d 100644 --- a/examples/nft-rule-add.c +++ b/examples/nft-rule-add.c @@ -80,11 +80,12 @@ static void add_counter(struct nft_rule *r) } static struct nft_rule *setup_rule(uint8_t family, const char *table, - const char *chain) + const char *chain, const char *handle) { struct nft_rule *r = NULL; uint8_t proto; uint16_t dport; + uint64_t handle_num; r = nft_rule_alloc(); if (r == NULL) { @@ -96,6 +97,11 @@ static struct nft_rule *setup_rule(uint8_t family, const char *table, nft_rule_attr_set(r, NFT_RULE_ATTR_CHAIN, chain); nft_rule_attr_set_u32(r, NFT_RULE_ATTR_FAMILY, family); + if (handle != NULL) { + handle_num = atoll(handle); + nft_rule_attr_set_u64(r, NFT_RULE_ATTR_POSITION, handle_num); + } + proto = IPPROTO_TCP; add_payload(r, NFT_PAYLOAD_NETWORK_HEADER, NFT_REG_1, offsetof(struct iphdr, protocol), sizeof(uint8_t)); @@ -138,7 +144,7 @@ int main(int argc, char *argv[]) uint32_t seq = time(NULL); int ret; - if (argc != 4) { + if (argc < 4 || argc > 5) { fprintf(stderr, "Usage: %s \n", argv[0]); exit(EXIT_FAILURE); } @@ -152,7 +158,10 @@ int main(int argc, char *argv[]) exit(EXIT_FAILURE); } - r = setup_rule(family, argv[2], argv[3]); + if (argc != 5) + r = setup_rule(family, argv[2], argv[3], NULL); + else + r = setup_rule(family, argv[2], argv[3], argv[4]); nl = mnl_socket_open(NETLINK_NETFILTER); if (nl == NULL) { diff --git a/examples/nft-rule-insert.c b/examples/nft-rule-insert.c deleted file mode 100644 index 1b377de..0000000 --- a/examples/nft-rule-insert.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * (C) 2012 by Pablo Neira Ayuso - * (C) 2013 by Eric Leblond - * - * 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 /* for offsetof */ -#include -#include - -#include - -#include -#include -#include - -#include -#include - -#include - -static void add_target_log(struct nft_rule_expr *e) -{ - struct ipt_log_info *info; - - nft_rule_expr_set(e, NFT_EXPR_TG_NAME, "LOG", strlen("LOG")); - nft_rule_expr_set_u32(e, NFT_EXPR_TG_REV, 0); - - info = calloc(1, sizeof(struct ipt_log_info)); - if (info == NULL) - return; - - sprintf(info->prefix, "test: "); - info->prefix[sizeof(info->prefix)-1] = '\0'; - info->logflags = 0x0f; - info->level = 5; - - nft_rule_expr_set(e, NFT_EXPR_TG_INFO, info, sizeof(*info)); -} - -static void add_expr_target(struct nft_rule *r) -{ - struct nft_rule_expr *expr; - - expr = nft_rule_expr_alloc("target"); - if (expr == NULL) - return; - - add_target_log(expr); - - nft_rule_add_expr(r, expr); -} - -static void add_match_iprange(struct nft_rule_expr *e) -{ - struct xt_iprange_mtinfo *info; - - nft_rule_expr_set(e, NFT_EXPR_MT_NAME, "iprange", strlen("iprange")); - nft_rule_expr_set_u32(e, NFT_EXPR_MT_REV, 1); - - info = calloc(1, sizeof(struct xt_iprange_mtinfo)); - if (info == NULL) - return; - - info->src_min.ip = info->dst_min.ip = inet_addr("127.0.0.1"); - info->src_max.ip = info->dst_max.ip = inet_addr("127.0.0.1"); - info->flags = IPRANGE_SRC; - - nft_rule_expr_set(e, NFT_EXPR_MT_INFO, info, sizeof(*info)); -} - -static void add_expr_match(struct nft_rule *r) -{ - struct nft_rule_expr *expr; - - expr = nft_rule_expr_alloc("match"); - if (expr == NULL) - return; - - add_match_iprange(expr); - - nft_rule_add_expr(r, expr); -} - -#define field_sizeof(t, f) (sizeof(((t *)NULL)->f)) - -static void add_payload2(struct nft_rule_expr *e) -{ - nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_BASE, - NFT_PAYLOAD_NETWORK_HEADER); - nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_DREG, NFT_REG_1); - nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_OFFSET, - offsetof(struct iphdr, protocol)); - nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_LEN, 1); -} - -static void add_payload(struct nft_rule *r) -{ - struct nft_rule_expr *expr; - - expr = nft_rule_expr_alloc("payload"); - if (expr == NULL) - return; - - add_payload2(expr); - - nft_rule_add_expr(r, expr); -} - -int main(int argc, char *argv[]) -{ - struct mnl_socket *nl; - char buf[MNL_SOCKET_BUFFER_SIZE]; - struct nlmsghdr *nlh; - uint32_t portid, seq; - struct nft_rule *r = NULL; - int ret, family; - uint64_t handle; - - if (argc != 5) { - fprintf(stderr, "Usage: %s
\n", - argv[0]); - exit(EXIT_FAILURE); - } - - r = nft_rule_alloc(); - if (r == NULL) { - perror("OOM"); - exit(EXIT_FAILURE); - } - - if (strcmp(argv[1], "ip") == 0) - family = AF_INET; - else if (strcmp(argv[1], "ip6") == 0) - family = AF_INET6; - else if (strcmp(argv[1], "bridge") == 0) - family = AF_BRIDGE; - else { - fprintf(stderr, "Unknown family: ip, ip6, bridge\n"); - exit(EXIT_FAILURE); - } - - nft_rule_attr_set(r, NFT_RULE_ATTR_TABLE, argv[2]); - nft_rule_attr_set(r, NFT_RULE_ATTR_CHAIN, argv[3]); - - handle = atoi(argv[4]); - nft_rule_attr_set(r, NFT_RULE_ATTR_POSITION, &handle); - - add_expr_match(r); - add_payload(r); - add_expr_target(r); - - char tmp[1024]; - nft_rule_snprintf(tmp, sizeof(tmp), r, 0, 0); - printf("%s\n", tmp); - - seq = time(NULL); - nlh = nft_rule_nlmsg_build_hdr(buf, NFT_MSG_NEWRULE, family, - NLM_F_ACK|NLM_F_CREATE, - seq); - nft_rule_nlmsg_build_payload(nlh, r); - nft_rule_free(r); - - 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, 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; -} -- cgit v1.2.3