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aba5acdf SH |
1 | /* |
2 | * ip.c "ip" utility frontend. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
aba5acdf SH |
10 | */ |
11 | ||
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <unistd.h> | |
15 | #include <syslog.h> | |
16 | #include <fcntl.h> | |
17 | #include <sys/socket.h> | |
18 | #include <netinet/in.h> | |
19 | #include <string.h> | |
351efcde | 20 | #include <errno.h> |
aba5acdf SH |
21 | |
22 | #include "SNAPSHOT.h" | |
23 | #include "utils.h" | |
24 | #include "ip_common.h" | |
52700d40 | 25 | #include "namespace.h" |
d7bd2db5 | 26 | #include "color.h" |
aba5acdf SH |
27 | |
28 | int preferred_family = AF_UNSPEC; | |
ec7aff5c SH |
29 | int human_readable; |
30 | int use_iec; | |
31 | int show_stats; | |
32 | int show_details; | |
33 | int resolve_hosts; | |
34 | int oneline; | |
5d295bb8 | 35 | int brief; |
ec7aff5c SH |
36 | int timestamp; |
37 | const char *_SL_; | |
38 | int force; | |
64c79560 | 39 | int max_flush_loops = 10; |
ec7aff5c SH |
40 | int batch_mode; |
41 | bool do_all; | |
64c79560 | 42 | |
3bfa73ff | 43 | struct rtnl_handle rth = { .fd = -1 }; |
aba5acdf SH |
44 | |
45 | static void usage(void) __attribute__((noreturn)); | |
46 | ||
47 | static void usage(void) | |
48 | { | |
49 | fprintf(stderr, | |
50 | "Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n" | |
10494d27 | 51 | " ip [ -force ] -batch filename\n" |
142434dc PŠ |
52 | "where OBJECT := { link | address | addrlabel | route | rule | neighbor | ntable |\n" |
53 | " tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm |\n" | |
6928747b | 54 | " netns | l2tp | fou | tcp_metrics | token | netconf }\n" |
1d934839 | 55 | " OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n" |
1e264abc | 56 | " -h[uman-readable] | -iec |\n" |
dacc5d41 | 57 | " -f[amily] { inet | inet6 | ipx | dnet | mpls | bridge | link } |\n" |
f4809174 | 58 | " -4 | -6 | -I | -D | -B | -0 |\n" |
5d295bb8 | 59 | " -l[oops] { maximum-addr-flush-attempts } | -br[ief] |\n" |
a925535c | 60 | " -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |\n" |
d7bd2db5 | 61 | " -rc[vbuf] [size] | -n[etns] name | -a[ll] | -c[olor]}\n"); |
aba5acdf SH |
62 | exit(-1); |
63 | } | |
64 | ||
fc57a9df SH |
65 | static int do_help(int argc, char **argv) |
66 | { | |
67 | usage(); | |
ec7aff5c | 68 | return 0; |
fc57a9df SH |
69 | } |
70 | ||
351efcde SH |
71 | static const struct cmd { |
72 | const char *cmd; | |
73 | int (*func)(int argc, char **argv); | |
74 | } cmds[] = { | |
4806867a | 75 | { "address", do_ipaddr }, |
4759758c | 76 | { "addrlabel", do_ipaddrlabel }, |
ede72396 | 77 | { "maddress", do_multiaddr }, |
351efcde SH |
78 | { "route", do_iproute }, |
79 | { "rule", do_iprule }, | |
ede72396 SH |
80 | { "neighbor", do_ipneigh }, |
81 | { "neighbour", do_ipneigh }, | |
09954dc6 SH |
82 | { "ntable", do_ipntable }, |
83 | { "ntbl", do_ipntable }, | |
351efcde | 84 | { "link", do_iplink }, |
5aa08f6b | 85 | { "l2tp", do_ipl2tp }, |
6928747b | 86 | { "fou", do_ipfou }, |
351efcde | 87 | { "tunnel", do_iptunnel }, |
ede72396 | 88 | { "tunl", do_iptunnel }, |
580fbd88 DW |
89 | { "tuntap", do_iptuntap }, |
90 | { "tap", do_iptuntap }, | |
191b60bd | 91 | { "token", do_iptoken }, |
ea63a69b | 92 | { "tcpmetrics", do_tcp_metrics }, |
ec7aff5c | 93 | { "tcp_metrics", do_tcp_metrics }, |
351efcde SH |
94 | { "monitor", do_ipmonitor }, |
95 | { "xfrm", do_xfrm }, | |
84616f83 | 96 | { "mroute", do_multiroute }, |
b6c8e808 | 97 | { "mrule", do_multirule }, |
0dc34c77 | 98 | { "netns", do_netns }, |
9d0efc10 | 99 | { "netconf", do_ipnetconf }, |
fc57a9df | 100 | { "help", do_help }, |
351efcde SH |
101 | { 0 } |
102 | }; | |
103 | ||
104 | static int do_cmd(const char *argv0, int argc, char **argv) | |
105 | { | |
e25d6970 | 106 | const struct cmd *c; |
351efcde | 107 | |
ede72396 | 108 | for (c = cmds; c->cmd; ++c) { |
ec7aff5c | 109 | if (matches(argv0, c->cmd) == 0) |
7397944d | 110 | return -(c->func(argc-1, argv+1)); |
ede72396 SH |
111 | } |
112 | ||
351efcde | 113 | fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0); |
7397944d | 114 | return EXIT_FAILURE; |
351efcde SH |
115 | } |
116 | ||
117 | static int batch(const char *name) | |
118 | { | |
119 | char *line = NULL; | |
120 | size_t len = 0; | |
7397944d | 121 | int ret = EXIT_SUCCESS; |
531d5da4 | 122 | int orig_family = preferred_family; |
351efcde | 123 | |
a3aa47a5 SH |
124 | batch_mode = 1; |
125 | ||
351efcde SH |
126 | if (name && strcmp(name, "-") != 0) { |
127 | if (freopen(name, "r", stdin) == NULL) { | |
ec7aff5c SH |
128 | fprintf(stderr, |
129 | "Cannot open file \"%s\" for reading: %s\n", | |
351efcde | 130 | name, strerror(errno)); |
7397944d | 131 | return EXIT_FAILURE; |
351efcde SH |
132 | } |
133 | } | |
134 | ||
135 | if (rtnl_open(&rth, 0) < 0) { | |
136 | fprintf(stderr, "Cannot open rtnetlink\n"); | |
7397944d | 137 | return EXIT_FAILURE; |
351efcde SH |
138 | } |
139 | ||
3e4f6a38 | 140 | cmdlineno = 0; |
351efcde SH |
141 | while (getcmdline(&line, &len, stdin) != -1) { |
142 | char *largv[100]; | |
143 | int largc; | |
144 | ||
531d5da4 AP |
145 | preferred_family = orig_family; |
146 | ||
351efcde SH |
147 | largc = makeargs(line, largv, 100); |
148 | if (largc == 0) | |
149 | continue; /* blank line */ | |
150 | ||
151 | if (do_cmd(largv[0], largc, largv)) { | |
ec7aff5c SH |
152 | fprintf(stderr, "Command failed %s:%d\n", |
153 | name, cmdlineno); | |
7397944d | 154 | ret = EXIT_FAILURE; |
351efcde SH |
155 | if (!force) |
156 | break; | |
157 | } | |
158 | } | |
8ed63ab1 SH |
159 | if (line) |
160 | free(line); | |
351efcde SH |
161 | |
162 | rtnl_close(&rth); | |
163 | return ret; | |
164 | } | |
165 | ||
166 | ||
aba5acdf SH |
167 | int main(int argc, char **argv) |
168 | { | |
169 | char *basename; | |
a3aa47a5 | 170 | char *batch_file = NULL; |
aba5acdf SH |
171 | |
172 | basename = strrchr(argv[0], '/'); | |
173 | if (basename == NULL) | |
174 | basename = argv[0]; | |
175 | else | |
176 | basename++; | |
ae665a52 | 177 | |
aba5acdf SH |
178 | while (argc > 1) { |
179 | char *opt = argv[1]; | |
ec7aff5c SH |
180 | |
181 | if (strcmp(opt, "--") == 0) { | |
aba5acdf SH |
182 | argc--; argv++; |
183 | break; | |
184 | } | |
185 | if (opt[0] != '-') | |
186 | break; | |
187 | if (opt[1] == '-') | |
188 | opt++; | |
64c79560 BG |
189 | if (matches(opt, "-loops") == 0) { |
190 | argc--; | |
191 | argv++; | |
192 | if (argc <= 1) | |
193 | usage(); | |
ec7aff5c SH |
194 | max_flush_loops = atoi(argv[1]); |
195 | } else if (matches(opt, "-family") == 0) { | |
aba5acdf SH |
196 | argc--; |
197 | argv++; | |
198 | if (argc <= 1) | |
199 | usage(); | |
45c90d19 | 200 | if (strcmp(argv[1], "help") == 0) |
aba5acdf SH |
201 | usage(); |
202 | else | |
45c90d19 EB |
203 | preferred_family = read_family(argv[1]); |
204 | if (preferred_family == AF_UNSPEC) | |
f1675d61 | 205 | invarg("invalid protocol family", argv[1]); |
aba5acdf SH |
206 | } else if (strcmp(opt, "-4") == 0) { |
207 | preferred_family = AF_INET; | |
208 | } else if (strcmp(opt, "-6") == 0) { | |
209 | preferred_family = AF_INET6; | |
210 | } else if (strcmp(opt, "-0") == 0) { | |
211 | preferred_family = AF_PACKET; | |
212 | } else if (strcmp(opt, "-I") == 0) { | |
213 | preferred_family = AF_IPX; | |
214 | } else if (strcmp(opt, "-D") == 0) { | |
215 | preferred_family = AF_DECnet; | |
dacc5d41 EB |
216 | } else if (strcmp(opt, "-M") == 0) { |
217 | preferred_family = AF_MPLS; | |
27bca615 SH |
218 | } else if (strcmp(opt, "-B") == 0) { |
219 | preferred_family = AF_BRIDGE; | |
b68d9837 CH |
220 | } else if (matches(opt, "-human") == 0 || |
221 | matches(opt, "-human-readable") == 0) { | |
222 | ++human_readable; | |
1e264abc SH |
223 | } else if (matches(opt, "-iec") == 0) { |
224 | ++use_iec; | |
aba5acdf SH |
225 | } else if (matches(opt, "-stats") == 0 || |
226 | matches(opt, "-statistics") == 0) { | |
227 | ++show_stats; | |
1d934839 PM |
228 | } else if (matches(opt, "-details") == 0) { |
229 | ++show_details; | |
aba5acdf SH |
230 | } else if (matches(opt, "-resolve") == 0) { |
231 | ++resolve_hosts; | |
232 | } else if (matches(opt, "-oneline") == 0) { | |
233 | ++oneline; | |
90f93024 SH |
234 | } else if (matches(opt, "-timestamp") == 0) { |
235 | ++timestamp; | |
79aa79d0 VK |
236 | } else if (matches(opt, "-tshort") == 0) { |
237 | ++timestamp; | |
238 | ++timestamp_short; | |
aba5acdf SH |
239 | #if 0 |
240 | } else if (matches(opt, "-numeric") == 0) { | |
241 | rtnl_names_numeric++; | |
242 | #endif | |
243 | } else if (matches(opt, "-Version") == 0) { | |
244 | printf("ip utility, iproute2-ss%s\n", SNAPSHOT); | |
245 | exit(0); | |
351efcde SH |
246 | } else if (matches(opt, "-force") == 0) { |
247 | ++force; | |
248 | } else if (matches(opt, "-batch") == 0) { | |
249 | argc--; | |
250 | argv++; | |
251 | if (argc <= 1) | |
252 | usage(); | |
253 | batch_file = argv[1]; | |
5d295bb8 AG |
254 | } else if (matches(opt, "-brief") == 0) { |
255 | ++brief; | |
7f03191f PM |
256 | } else if (matches(opt, "-rcvbuf") == 0) { |
257 | unsigned int size; | |
258 | ||
259 | argc--; | |
260 | argv++; | |
261 | if (argc <= 1) | |
262 | usage(); | |
263 | if (get_unsigned(&size, argv[1], 0)) { | |
264 | fprintf(stderr, "Invalid rcvbuf size '%s'\n", | |
265 | argv[1]); | |
266 | exit(-1); | |
267 | } | |
268 | rcvbuf = size; | |
d7bd2db5 MN |
269 | } else if (matches(opt, "-color") == 0) { |
270 | enable_color(); | |
aba5acdf SH |
271 | } else if (matches(opt, "-help") == 0) { |
272 | usage(); | |
52700d40 VK |
273 | } else if (matches(opt, "-netns") == 0) { |
274 | NEXT_ARG(); | |
275 | if (netns_switch(argv[1])) | |
276 | exit(-1); | |
b13ba03f VK |
277 | } else if (matches(opt, "-all") == 0) { |
278 | do_all = true; | |
aba5acdf | 279 | } else { |
ec7aff5c SH |
280 | fprintf(stderr, |
281 | "Option \"%s\" is unknown, try \"ip -help\".\n", | |
282 | opt); | |
aba5acdf SH |
283 | exit(-1); |
284 | } | |
285 | argc--; argv++; | |
286 | } | |
287 | ||
ec7aff5c | 288 | _SL_ = oneline ? "\\" : "\n"; |
aba5acdf | 289 | |
ae665a52 | 290 | if (batch_file) |
351efcde | 291 | return batch(batch_file); |
ae665a52 | 292 | |
351efcde SH |
293 | if (rtnl_open(&rth, 0) < 0) |
294 | exit(1); | |
295 | ||
ae665a52 | 296 | if (strlen(basename) > 2) |
351efcde SH |
297 | return do_cmd(basename+2, argc, argv); |
298 | ||
ae665a52 | 299 | if (argc > 1) |
351efcde SH |
300 | return do_cmd(argv[1], argc-1, argv+1); |
301 | ||
302 | rtnl_close(&rth); | |
aba5acdf SH |
303 | usage(); |
304 | } |