libnl  3.5.0
nf-exp-add.c
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * src/nf-exp-add.c Create an expectation
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  * Copyright (c) 2012 Rich Fought <rich.fought@watchguard.com>
14  *
15  */
16 
17 #include <netlink/cli/utils.h>
18 #include <netlink/cli/exp.h>
19 
20 #include <linux/netlink.h>
21 
22 static int quiet = 0;
23 
24 static void print_usage(void)
25 {
26  printf(
27  "Usage: nf-exp-list [OPTION]... [CONNTRACK ENTRY]\n"
28  "\n"
29  "Options\n"
30  " --replace Replace the address if it exists.\n"
31  " -q, --quiet Do not print informal notifications.\n"
32  " -h, --help Show this help\n"
33  " -v, --version Show versioning information\n"
34  "\n"
35  "Expectation Selection\n"
36  " -i, --id=NUM Identifier\n"
37  " --expect-proto=PROTOCOL Expectation protocol\n"
38  " --expect-src=ADDR Expectation source address\n"
39  " --expect-sport=PORT Expectation source port\n"
40  " --expect-dst=ADDR Expectation destination address\n"
41  " --expect-dport=PORT Expectation destination port\n"
42  " --master-proto=PROTOCOL Master conntrack protocol\n"
43  " --master-src=ADDR Master conntrack source address\n"
44  " --master-sport=PORT Master conntrack source port\n"
45  " --master-dst=ADDR Master conntrack destination address\n"
46  " --master-dport=PORT Master conntrack destination port\n"
47  " --mask-proto=PROTOCOL Mask protocol\n"
48  " --mask-src=ADDR Mask source address\n"
49  " --mask-sport=PORT Mask source port\n"
50  " --mask-dst=ADDR Mask destination address\n"
51  " --mask-dport=PORT Mask destination port\n"
52  " -F, --family=FAMILY Address family\n"
53  " --timeout=NUM Timeout value\n"
54  " --helper=STRING Helper Name\n"
55  " --flags Flags (Kernel 2.6.37)\n"
56  );
57  exit(0);
58 }
59 
60 int main(int argc, char *argv[])
61 {
62  struct nl_sock *sock;
63  struct nfnl_exp *exp;
64  struct nl_dump_params params = {
66  .dp_fd = stdout,
67  };
68  int err, nlflags = NLM_F_CREATE;
69 
70  exp = nl_cli_exp_alloc();
71 
72  for (;;) {
73  int c, optidx = 0;
74  enum {
75  ARG_MARK = 270,
76  ARG_TCP_STATE = 271,
77  ARG_EXPECT_PROTO,
78  ARG_EXPECT_SRC,
79  ARG_EXPECT_SPORT,
80  ARG_EXPECT_DST,
81  ARG_EXPECT_DPORT,
82  ARG_MASTER_PROTO,
83  ARG_MASTER_SRC,
84  ARG_MASTER_SPORT,
85  ARG_MASTER_DST,
86  ARG_MASTER_DPORT,
87  ARG_MASK_PROTO,
88  ARG_MASK_SRC,
89  ARG_MASK_SPORT,
90  ARG_MASK_DST,
91  ARG_MASK_DPORT,
92  ARG_NAT_PROTO,
93  ARG_NAT_SRC,
94  ARG_NAT_SPORT,
95  ARG_NAT_DST,
96  ARG_NAT_DPORT,
97  ARG_NAT_DIR,
98  ARG_TIMEOUT,
99  ARG_HELPER_NAME,
100  ARG_REPLACE,
101  ARG_FLAGS,
102  };
103  static struct option long_opts[] = {
104  { "replace", 1, 0, ARG_REPLACE },
105  { "quiet", 0, 0, 'q' },
106  { "help", 0, 0, 'h' },
107  { "version", 0, 0, 'v' },
108  { "id", 1, 0, 'i' },
109  { "expect-proto", 1, 0, ARG_EXPECT_PROTO },
110  { "expect-src", 1, 0, ARG_EXPECT_SRC },
111  { "expect-sport", 1, 0, ARG_EXPECT_SPORT },
112  { "expect-dst", 1, 0, ARG_EXPECT_DST },
113  { "expect-dport", 1, 0, ARG_EXPECT_DPORT },
114  { "master-proto", 1, 0, ARG_MASTER_PROTO },
115  { "master-src", 1, 0, ARG_MASTER_SRC },
116  { "master-sport", 1, 0, ARG_MASTER_SPORT },
117  { "master-dst", 1, 0, ARG_MASTER_DST },
118  { "master-dport", 1, 0, ARG_MASTER_DPORT },
119  { "mask-proto", 1, 0, ARG_MASK_PROTO },
120  { "mask-src", 1, 0, ARG_MASK_SRC },
121  { "mask-sport", 1, 0, ARG_MASK_SPORT },
122  { "mask-dst", 1, 0, ARG_MASK_DST },
123  { "mask-dport", 1, 0, ARG_MASK_DPORT },
124  { "nat-proto", 1, 0, ARG_NAT_PROTO },
125  { "nat-src", 1, 0, ARG_NAT_SRC },
126  { "nat-sport", 1, 0, ARG_NAT_SPORT },
127  { "nat-dst", 1, 0, ARG_NAT_DST },
128  { "nat-dport", 1, 0, ARG_NAT_DPORT },
129  { "nat-dir", 1, 0, ARG_NAT_DIR },
130  { "family", 1, 0, 'F' },
131  { "timeout", 1, 0, ARG_TIMEOUT },
132  { "helper", 1, 0, ARG_HELPER_NAME },
133  { "flags", 1, 0, ARG_FLAGS},
134  { 0, 0, 0, 0 }
135  };
136 
137  c = getopt_long(argc, argv, "46f:hvi:p:F:", long_opts, &optidx);
138  if (c == -1)
139  break;
140 
141  switch (c) {
142  case '?': exit(NLE_INVAL);
143  case ARG_REPLACE: nlflags |= NLM_F_REPLACE; break;
144  case 'q': quiet = 1; break;
145  case '4': nfnl_exp_set_family(exp, AF_INET); break;
146  case '6': nfnl_exp_set_family(exp, AF_INET6); break;
147  case 'h': print_usage(); break;
148  case 'v': nl_cli_print_version(); break;
149  case 'i': nl_cli_exp_parse_id(exp, optarg); break;
150  case ARG_EXPECT_PROTO: nl_cli_exp_parse_l4protonum(exp, NFNL_EXP_TUPLE_EXPECT, optarg); break;
151  case ARG_EXPECT_SRC: nl_cli_exp_parse_src(exp, NFNL_EXP_TUPLE_EXPECT, optarg); break;
152  case ARG_EXPECT_SPORT: nl_cli_exp_parse_src_port(exp, NFNL_EXP_TUPLE_EXPECT, optarg); break;
153  case ARG_EXPECT_DST: nl_cli_exp_parse_dst(exp, NFNL_EXP_TUPLE_EXPECT, optarg); break;
154  case ARG_EXPECT_DPORT: nl_cli_exp_parse_dst_port(exp, NFNL_EXP_TUPLE_EXPECT, optarg); break;
155  case ARG_MASTER_PROTO: nl_cli_exp_parse_l4protonum(exp, NFNL_EXP_TUPLE_MASTER, optarg); break;
156  case ARG_MASTER_SRC: nl_cli_exp_parse_src(exp, NFNL_EXP_TUPLE_MASTER, optarg); break;
157  case ARG_MASTER_SPORT: nl_cli_exp_parse_src_port(exp, NFNL_EXP_TUPLE_MASTER, optarg); break;
158  case ARG_MASTER_DST: nl_cli_exp_parse_dst(exp, NFNL_EXP_TUPLE_MASTER, optarg); break;
159  case ARG_MASTER_DPORT: nl_cli_exp_parse_dst_port(exp, NFNL_EXP_TUPLE_MASTER, optarg); break;
160  case ARG_MASK_PROTO: nl_cli_exp_parse_l4protonum(exp, NFNL_EXP_TUPLE_MASK, optarg); break;
161  case ARG_MASK_SRC: nl_cli_exp_parse_src(exp, NFNL_EXP_TUPLE_MASK, optarg); break;
162  case ARG_MASK_SPORT: nl_cli_exp_parse_src_port(exp, NFNL_EXP_TUPLE_MASK, optarg); break;
163  case ARG_MASK_DST: nl_cli_exp_parse_dst(exp, NFNL_EXP_TUPLE_MASK, optarg); break;
164  case ARG_MASK_DPORT: nl_cli_exp_parse_dst_port(exp, NFNL_EXP_TUPLE_MASK, optarg); break;
165  case ARG_NAT_PROTO: nl_cli_exp_parse_l4protonum(exp, NFNL_EXP_TUPLE_NAT, optarg); break;
166  case ARG_NAT_SRC: nl_cli_exp_parse_src(exp, NFNL_EXP_TUPLE_NAT, optarg); break;
167  case ARG_NAT_SPORT: nl_cli_exp_parse_src_port(exp, NFNL_EXP_TUPLE_NAT, optarg); break;
168  case ARG_NAT_DST: nl_cli_exp_parse_dst(exp, NFNL_EXP_TUPLE_NAT, optarg); break;
169  case ARG_NAT_DPORT: nl_cli_exp_parse_dst_port(exp, NFNL_EXP_TUPLE_NAT, optarg); break;
170  case ARG_NAT_DIR: nl_cli_exp_parse_nat_dir(exp, optarg); break;
171  case 'F': nl_cli_exp_parse_family(exp, optarg); break;
172  case ARG_TIMEOUT: nl_cli_exp_parse_timeout(exp, optarg); break;
173  case ARG_HELPER_NAME: nl_cli_exp_parse_helper_name(exp, optarg); break;
174  case ARG_FLAGS: nl_cli_exp_parse_flags(exp, optarg); break;
175  }
176  }
177 
178  sock = nl_cli_alloc_socket();
179  nl_cli_connect(sock, NETLINK_NETFILTER);
180 
181  if ((err = nfnl_exp_add(sock, exp, nlflags)) < 0)
182  nl_cli_fatal(err, "Unable to add expectation: %s", nl_geterror(err));
183 
184  if (!quiet) {
185  printf("Added ");
186  nl_object_dump(OBJ_CAST(exp), &params);
187  }
188 
189  return 0;
190 }
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