libnl 3.5.0

nf-ct-add.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3 * src/nf-ct-add.c Add Conntrack Entry
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation version 2.1
8 * of the License.
9 *
10 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
11 * Copyright (c) 2007 Philip Craig <philipc@snapgear.com>
12 * Copyright (c) 2007 Secure Computing Corporation
13 */
14
15 #include <netlink/cli/utils.h>
16 #include <netlink/cli/ct.h>
17
18 #include <linux/rtnetlink.h>
19
20 static int quiet = 0;
21
22 static void print_usage(void)
23 {
24 printf(
25 "Usage: nf-ct-add [OPTION]... [CONNTRACK ENTRY]\n"
26 "\n"
27 "Options\n"
28 " -q, --quiet Do not print informal notifications.\n"
29 " -h, --help Show this help\n"
30 " -v, --version Show versioning information\n"
31 "\n"
32 "Conntrack Selection\n"
33 " -p, --proto=PROTOCOL Protocol\n"
34 " --orig-src=ADDR Original source address\n"
35 " --orig-sport=PORT Original source port\n"
36 " --orig-dst=ADDR Original destination address\n"
37 " --orig-dport=PORT Original destination port\n"
38 " --reply-src=ADDR Reply source address\n"
39 " --reply-sport=PORT Reply source port\n"
40 " --reply-dst=ADDR Reply destination address\n"
41 " --reply-dport=PORT Reply destination port\n"
42 " -F, --family=FAMILY Address family\n"
43 " --mark=NUM Mark value\n"
44 " --timeout=NUM Timeout value\n"
45 " --status Bitset representing status of connection.\n"
46 " --zone=NUM Zone value\n"
47 );
48 exit(0);
49 }
50
51 int main(int argc, char *argv[])
52 {
53 struct nl_sock *sock;
54 struct nfnl_ct *ct;
55 struct nl_dump_params params = {
56 .dp_type = NL_DUMP_LINE,
57 .dp_fd = stdout,
58 };
59 int err, nlflags = NLM_F_CREATE;
60
61 ct = nl_cli_ct_alloc();
62
63 for (;;) {
64 int c, optidx = 0;
65 enum {
66 ARG_ORIG_SRC = 257,
67 ARG_ORIG_SPORT = 258,
68 ARG_ORIG_DST,
69 ARG_ORIG_DPORT,
70 ARG_REPLY_SRC,
71 ARG_REPLY_SPORT,
72 ARG_REPLY_DST,
73 ARG_REPLY_DPORT,
74 ARG_MARK,
75 ARG_TIMEOUT,
76 ARG_STATUS,
77 ARG_ZONE,
78 };
79 static struct option long_opts[] = {
80 { "quiet", 0, 0, 'q' },
81 { "help", 0, 0, 'h' },
82 { "version", 0, 0, 'v' },
83 { "proto", 1, 0, 'p' },
84 { "orig-src", 1, 0, ARG_ORIG_SRC },
85 { "orig-sport", 1, 0, ARG_ORIG_SPORT },
86 { "orig-dst", 1, 0, ARG_ORIG_DST },
87 { "orig-dport", 1, 0, ARG_ORIG_DPORT },
88 { "reply-src", 1, 0, ARG_REPLY_SRC },
89 { "reply-sport", 1, 0, ARG_REPLY_SPORT },
90 { "reply-dst", 1, 0, ARG_REPLY_DST },
91 { "reply-dport", 1, 0, ARG_REPLY_DPORT },
92 { "family", 1, 0, 'F' },
93 { "mark", 1, 0, ARG_MARK },
94 { "timeout", 1, 0, ARG_TIMEOUT },
95 { "status", 1, 0, ARG_STATUS },
96 { "zone", 1, 0, ARG_ZONE },
97 { 0, 0, 0, 0 }
98 };
99
100 c = getopt_long(argc, argv, "46q:hv:p:F:", long_opts, &optidx);
101 if (c == -1)
102 break;
103
104 switch (c) {
105 case '?': exit(NLE_INVAL);
106 case 'q': quiet = 1; break;
107 case '4': nfnl_ct_set_family(ct, AF_INET); break;
108 case '6': nfnl_ct_set_family(ct, AF_INET6); break;
109 case 'h': print_usage(); break;
110 case 'v': nl_cli_print_version(); break;
111 case 'p': nl_cli_ct_parse_protocol(ct, optarg); break;
112 case ARG_ORIG_SRC: nl_cli_ct_parse_src(ct, 0, optarg); break;
113 case ARG_ORIG_SPORT: nl_cli_ct_parse_src_port(ct, 0, optarg); break;
114 case ARG_ORIG_DST: nl_cli_ct_parse_dst(ct, 0, optarg); break;
115 case ARG_ORIG_DPORT: nl_cli_ct_parse_dst_port(ct, 0, optarg); break;
116 case ARG_REPLY_SRC: nl_cli_ct_parse_src(ct, 1, optarg); break;
117 case ARG_REPLY_SPORT: nl_cli_ct_parse_src_port(ct, 1, optarg); break;
118 case ARG_REPLY_DST: nl_cli_ct_parse_dst(ct, 1, optarg); break;
119 case ARG_REPLY_DPORT: nl_cli_ct_parse_dst_port(ct, 1, optarg); break;
120 case 'F': nl_cli_ct_parse_family(ct, optarg); break;
121 case ARG_MARK: nl_cli_ct_parse_mark(ct, optarg); break;
122 case ARG_TIMEOUT: nl_cli_ct_parse_timeout(ct, optarg); break;
123 case ARG_STATUS: nl_cli_ct_parse_status(ct, optarg); break;
124 case ARG_ZONE: nl_cli_ct_parse_zone(ct, optarg); break;
125 }
126 }
127
128 if (!quiet) {
129 printf("Adding ");
130 nl_object_dump(OBJ_CAST(ct), &params);
131 }
132
133 sock = nl_cli_alloc_socket();
134 nl_cli_connect(sock, NETLINK_NETFILTER);
135
136 if ((err = nfnl_ct_add(sock, ct, nlflags)) < 0)
137 nl_cli_fatal(err, "Unable to add conntrack: %s", nl_geterror(err));
138
139 if (!quiet) {
140 printf("Added ");
141 nl_object_dump(OBJ_CAST(ct), &params);
142 }
143
144 return 0;
145 }
NL_DUMP_LINE
Dump object briefly on one line.
Definition: types.h:22
nl_dump_params::dp_type
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
nl_object_dump
void nl_object_dump(struct nl_object *obj, struct nl_dump_params *params)
Dump this object according to the specified parameters.
Definition: object.c:289
nl_cli_fatal
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78
nl_dump_params
Dumping parameters.
Definition: types.h:33