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 = {
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 }
Dump object briefly on one line.
Definition: types.h:22
enum nl_dump_type dp_type
Specifies the type of dump that is requested.
Definition: types.h:38
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
void nl_cli_fatal(int err, const char *fmt,...)
Print error message and quit application.
Definition: utils.c:78
Dumping parameters.
Definition: types.h:33