]>
Commit | Line | Data |
---|---|---|
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> | |
aba5acdf SH |
15 | #include <fcntl.h> |
16 | #include <sys/socket.h> | |
17 | #include <netinet/in.h> | |
18 | #include <string.h> | |
351efcde | 19 | #include <errno.h> |
aba5acdf SH |
20 | |
21 | #include "SNAPSHOT.h" | |
22 | #include "utils.h" | |
23 | #include "ip_common.h" | |
52700d40 | 24 | #include "namespace.h" |
d7bd2db5 | 25 | #include "color.h" |
31f45088 | 26 | #include "rt_names.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; | |
ec7aff5c | 33 | int oneline; |
5d295bb8 | 34 | int brief; |
5df60772 | 35 | int json; |
ec7aff5c | 36 | int timestamp; |
ec7aff5c | 37 | int force; |
64c79560 | 38 | int max_flush_loops = 10; |
ec7aff5c SH |
39 | int batch_mode; |
40 | bool do_all; | |
64c79560 | 41 | |
3bfa73ff | 42 | struct rtnl_handle rth = { .fd = -1 }; |
aba5acdf SH |
43 | |
44 | static void usage(void) __attribute__((noreturn)); | |
45 | ||
46 | static void usage(void) | |
47 | { | |
48 | fprintf(stderr, | |
8589eb4e MC |
49 | "Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n" |
50 | " ip [ -force ] -batch filename\n" | |
51 | "where OBJECT := { link | address | addrlabel | route | rule | neigh | ntable |\n" | |
52 | " tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm |\n" | |
53 | " netns | l2tp | fou | macsec | tcp_metrics | token | netconf | ila |\n" | |
63df8e85 | 54 | " vrf | sr | nexthop }\n" |
8589eb4e MC |
55 | " OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n" |
56 | " -h[uman-readable] | -iec | -j[son] | -p[retty] |\n" | |
57 | " -f[amily] { inet | inet6 | mpls | bridge | link } |\n" | |
58 | " -4 | -6 | -I | -D | -M | -B | -0 |\n" | |
59 | " -l[oops] { maximum-addr-flush-attempts } | -br[ief] |\n" | |
60 | " -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |\n" | |
ca697cee HL |
61 | " -rc[vbuf] [size] | -n[etns] name | -N[umeric] | -a[ll] |\n" |
62 | " -c[olor]}\n"); | |
aba5acdf SH |
63 | exit(-1); |
64 | } | |
65 | ||
fc57a9df SH |
66 | static int do_help(int argc, char **argv) |
67 | { | |
68 | usage(); | |
ec7aff5c | 69 | return 0; |
fc57a9df SH |
70 | } |
71 | ||
351efcde SH |
72 | static const struct cmd { |
73 | const char *cmd; | |
74 | int (*func)(int argc, char **argv); | |
75 | } cmds[] = { | |
4806867a | 76 | { "address", do_ipaddr }, |
4759758c | 77 | { "addrlabel", do_ipaddrlabel }, |
ede72396 | 78 | { "maddress", do_multiaddr }, |
351efcde SH |
79 | { "route", do_iproute }, |
80 | { "rule", do_iprule }, | |
ede72396 SH |
81 | { "neighbor", do_ipneigh }, |
82 | { "neighbour", do_ipneigh }, | |
09954dc6 SH |
83 | { "ntable", do_ipntable }, |
84 | { "ntbl", do_ipntable }, | |
351efcde | 85 | { "link", do_iplink }, |
5aa08f6b | 86 | { "l2tp", do_ipl2tp }, |
6928747b | 87 | { "fou", do_ipfou }, |
ec71cae0 | 88 | { "ila", do_ipila }, |
b26fc590 | 89 | { "macsec", do_ipmacsec }, |
351efcde | 90 | { "tunnel", do_iptunnel }, |
ede72396 | 91 | { "tunl", do_iptunnel }, |
580fbd88 DW |
92 | { "tuntap", do_iptuntap }, |
93 | { "tap", do_iptuntap }, | |
191b60bd | 94 | { "token", do_iptoken }, |
ea63a69b | 95 | { "tcpmetrics", do_tcp_metrics }, |
ec7aff5c | 96 | { "tcp_metrics", do_tcp_metrics }, |
351efcde SH |
97 | { "monitor", do_ipmonitor }, |
98 | { "xfrm", do_xfrm }, | |
84616f83 | 99 | { "mroute", do_multiroute }, |
b6c8e808 | 100 | { "mrule", do_multirule }, |
0dc34c77 | 101 | { "netns", do_netns }, |
9d0efc10 | 102 | { "netconf", do_ipnetconf }, |
1949f82c | 103 | { "vrf", do_ipvrf}, |
93863328 | 104 | { "sr", do_seg6 }, |
63df8e85 | 105 | { "nexthop", do_ipnh }, |
fc57a9df | 106 | { "help", do_help }, |
351efcde SH |
107 | { 0 } |
108 | }; | |
109 | ||
110 | static int do_cmd(const char *argv0, int argc, char **argv) | |
111 | { | |
e25d6970 | 112 | const struct cmd *c; |
351efcde | 113 | |
ede72396 | 114 | for (c = cmds; c->cmd; ++c) { |
ec7aff5c | 115 | if (matches(argv0, c->cmd) == 0) |
7397944d | 116 | return -(c->func(argc-1, argv+1)); |
ede72396 SH |
117 | } |
118 | ||
351efcde | 119 | fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0); |
7397944d | 120 | return EXIT_FAILURE; |
351efcde SH |
121 | } |
122 | ||
123 | static int batch(const char *name) | |
124 | { | |
125 | char *line = NULL; | |
126 | size_t len = 0; | |
7397944d | 127 | int ret = EXIT_SUCCESS; |
531d5da4 | 128 | int orig_family = preferred_family; |
351efcde | 129 | |
a3aa47a5 SH |
130 | batch_mode = 1; |
131 | ||
351efcde SH |
132 | if (name && strcmp(name, "-") != 0) { |
133 | if (freopen(name, "r", stdin) == NULL) { | |
ec7aff5c SH |
134 | fprintf(stderr, |
135 | "Cannot open file \"%s\" for reading: %s\n", | |
351efcde | 136 | name, strerror(errno)); |
7397944d | 137 | return EXIT_FAILURE; |
351efcde SH |
138 | } |
139 | } | |
140 | ||
141 | if (rtnl_open(&rth, 0) < 0) { | |
142 | fprintf(stderr, "Cannot open rtnetlink\n"); | |
7397944d | 143 | return EXIT_FAILURE; |
351efcde SH |
144 | } |
145 | ||
3e4f6a38 | 146 | cmdlineno = 0; |
351efcde SH |
147 | while (getcmdline(&line, &len, stdin) != -1) { |
148 | char *largv[100]; | |
149 | int largc; | |
150 | ||
531d5da4 AP |
151 | preferred_family = orig_family; |
152 | ||
351efcde SH |
153 | largc = makeargs(line, largv, 100); |
154 | if (largc == 0) | |
155 | continue; /* blank line */ | |
156 | ||
157 | if (do_cmd(largv[0], largc, largv)) { | |
ec7aff5c SH |
158 | fprintf(stderr, "Command failed %s:%d\n", |
159 | name, cmdlineno); | |
7397944d | 160 | ret = EXIT_FAILURE; |
351efcde SH |
161 | if (!force) |
162 | break; | |
163 | } | |
164 | } | |
8ed63ab1 SH |
165 | if (line) |
166 | free(line); | |
351efcde SH |
167 | |
168 | rtnl_close(&rth); | |
169 | return ret; | |
170 | } | |
171 | ||
172 | ||
aba5acdf SH |
173 | int main(int argc, char **argv) |
174 | { | |
175 | char *basename; | |
a3aa47a5 | 176 | char *batch_file = NULL; |
1ca4341d | 177 | int color = 0; |
aba5acdf | 178 | |
ba2fc55b LB |
179 | /* to run vrf exec without root, capabilities might be set, drop them |
180 | * if not needed as the first thing. | |
181 | * execv will drop them for the child command. | |
182 | * vrf exec requires: | |
183 | * - cap_dac_override to create the cgroup subdir in /sys | |
184 | * - cap_sys_admin to load the BPF program | |
185 | * - cap_net_admin to set the socket into the cgroup | |
186 | */ | |
187 | if (argc < 3 || strcmp(argv[1], "vrf") != 0 || | |
188 | strcmp(argv[2], "exec") != 0) | |
189 | drop_cap(); | |
190 | ||
aba5acdf SH |
191 | basename = strrchr(argv[0], '/'); |
192 | if (basename == NULL) | |
193 | basename = argv[0]; | |
194 | else | |
195 | basename++; | |
ae665a52 | 196 | |
aba5acdf SH |
197 | while (argc > 1) { |
198 | char *opt = argv[1]; | |
ec7aff5c SH |
199 | |
200 | if (strcmp(opt, "--") == 0) { | |
aba5acdf SH |
201 | argc--; argv++; |
202 | break; | |
203 | } | |
204 | if (opt[0] != '-') | |
205 | break; | |
206 | if (opt[1] == '-') | |
207 | opt++; | |
64c79560 BG |
208 | if (matches(opt, "-loops") == 0) { |
209 | argc--; | |
210 | argv++; | |
211 | if (argc <= 1) | |
212 | usage(); | |
ec7aff5c SH |
213 | max_flush_loops = atoi(argv[1]); |
214 | } else if (matches(opt, "-family") == 0) { | |
aba5acdf SH |
215 | argc--; |
216 | argv++; | |
217 | if (argc <= 1) | |
218 | usage(); | |
45c90d19 | 219 | if (strcmp(argv[1], "help") == 0) |
aba5acdf SH |
220 | usage(); |
221 | else | |
45c90d19 EB |
222 | preferred_family = read_family(argv[1]); |
223 | if (preferred_family == AF_UNSPEC) | |
f1675d61 | 224 | invarg("invalid protocol family", argv[1]); |
aba5acdf SH |
225 | } else if (strcmp(opt, "-4") == 0) { |
226 | preferred_family = AF_INET; | |
227 | } else if (strcmp(opt, "-6") == 0) { | |
228 | preferred_family = AF_INET6; | |
229 | } else if (strcmp(opt, "-0") == 0) { | |
230 | preferred_family = AF_PACKET; | |
aba5acdf SH |
231 | } else if (strcmp(opt, "-D") == 0) { |
232 | preferred_family = AF_DECnet; | |
dacc5d41 EB |
233 | } else if (strcmp(opt, "-M") == 0) { |
234 | preferred_family = AF_MPLS; | |
27bca615 SH |
235 | } else if (strcmp(opt, "-B") == 0) { |
236 | preferred_family = AF_BRIDGE; | |
b68d9837 CH |
237 | } else if (matches(opt, "-human") == 0 || |
238 | matches(opt, "-human-readable") == 0) { | |
239 | ++human_readable; | |
1e264abc SH |
240 | } else if (matches(opt, "-iec") == 0) { |
241 | ++use_iec; | |
aba5acdf SH |
242 | } else if (matches(opt, "-stats") == 0 || |
243 | matches(opt, "-statistics") == 0) { | |
244 | ++show_stats; | |
1d934839 PM |
245 | } else if (matches(opt, "-details") == 0) { |
246 | ++show_details; | |
aba5acdf SH |
247 | } else if (matches(opt, "-resolve") == 0) { |
248 | ++resolve_hosts; | |
249 | } else if (matches(opt, "-oneline") == 0) { | |
250 | ++oneline; | |
90f93024 SH |
251 | } else if (matches(opt, "-timestamp") == 0) { |
252 | ++timestamp; | |
79aa79d0 VK |
253 | } else if (matches(opt, "-tshort") == 0) { |
254 | ++timestamp; | |
255 | ++timestamp_short; | |
aba5acdf SH |
256 | } else if (matches(opt, "-Version") == 0) { |
257 | printf("ip utility, iproute2-ss%s\n", SNAPSHOT); | |
258 | exit(0); | |
351efcde SH |
259 | } else if (matches(opt, "-force") == 0) { |
260 | ++force; | |
261 | } else if (matches(opt, "-batch") == 0) { | |
262 | argc--; | |
263 | argv++; | |
264 | if (argc <= 1) | |
265 | usage(); | |
266 | batch_file = argv[1]; | |
5d295bb8 AG |
267 | } else if (matches(opt, "-brief") == 0) { |
268 | ++brief; | |
5df60772 JF |
269 | } else if (matches(opt, "-json") == 0) { |
270 | ++json; | |
a233caa0 | 271 | } else if (matches(opt, "-pretty") == 0) { |
54336567 | 272 | ++pretty; |
7f03191f PM |
273 | } else if (matches(opt, "-rcvbuf") == 0) { |
274 | unsigned int size; | |
275 | ||
276 | argc--; | |
277 | argv++; | |
278 | if (argc <= 1) | |
279 | usage(); | |
280 | if (get_unsigned(&size, argv[1], 0)) { | |
281 | fprintf(stderr, "Invalid rcvbuf size '%s'\n", | |
282 | argv[1]); | |
283 | exit(-1); | |
284 | } | |
285 | rcvbuf = size; | |
ff1ab8ed | 286 | } else if (matches_color(opt, &color)) { |
aba5acdf SH |
287 | } else if (matches(opt, "-help") == 0) { |
288 | usage(); | |
52700d40 VK |
289 | } else if (matches(opt, "-netns") == 0) { |
290 | NEXT_ARG(); | |
291 | if (netns_switch(argv[1])) | |
292 | exit(-1); | |
ca697cee HL |
293 | } else if (matches(opt, "-Numeric") == 0) { |
294 | ++numeric; | |
b13ba03f VK |
295 | } else if (matches(opt, "-all") == 0) { |
296 | do_all = true; | |
aba5acdf | 297 | } else { |
ec7aff5c SH |
298 | fprintf(stderr, |
299 | "Option \"%s\" is unknown, try \"ip -help\".\n", | |
300 | opt); | |
aba5acdf SH |
301 | exit(-1); |
302 | } | |
303 | argc--; argv++; | |
304 | } | |
305 | ||
ec7aff5c | 306 | _SL_ = oneline ? "\\" : "\n"; |
aba5acdf | 307 | |
4d82962c | 308 | check_enable_color(color, json); |
5df60772 | 309 | |
ae665a52 | 310 | if (batch_file) |
351efcde | 311 | return batch(batch_file); |
ae665a52 | 312 | |
351efcde SH |
313 | if (rtnl_open(&rth, 0) < 0) |
314 | exit(1); | |
315 | ||
aea41afc DA |
316 | rtnl_set_strict_dump(&rth); |
317 | ||
ae665a52 | 318 | if (strlen(basename) > 2) |
351efcde SH |
319 | return do_cmd(basename+2, argc, argv); |
320 | ||
ae665a52 | 321 | if (argc > 1) |
351efcde SH |
322 | return do_cmd(argv[1], argc-1, argv+1); |
323 | ||
324 | rtnl_close(&rth); | |
aba5acdf SH |
325 | usage(); |
326 | } |