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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>
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10 */
11
12#include <stdio.h>
13#include <stdlib.h>
14#include <unistd.h>
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15#include <fcntl.h>
16#include <sys/socket.h>
17#include <netinet/in.h>
18#include <string.h>
351efcde 19#include <errno.h>
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20
21#include "SNAPSHOT.h"
22#include "utils.h"
23#include "ip_common.h"
52700d40 24#include "namespace.h"
d7bd2db5 25#include "color.h"
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26
27int preferred_family = AF_UNSPEC;
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28int human_readable;
29int use_iec;
30int show_stats;
31int show_details;
ec7aff5c 32int oneline;
5d295bb8 33int brief;
5df60772 34int json;
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35int timestamp;
36const char *_SL_;
37int force;
64c79560 38int max_flush_loops = 10;
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39int batch_mode;
40bool do_all;
64c79560 41
3bfa73ff 42struct rtnl_handle rth = { .fd = -1 };
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43
44static void usage(void) __attribute__((noreturn));
45
46static void usage(void)
47{
48 fprintf(stderr,
49"Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
10494d27 50" ip [ -force ] -batch filename\n"
7a53aa59 51"where OBJECT := { link | address | addrlabel | route | rule | neigh | ntable |\n"
142434dc 52" tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm |\n"
1949f82c 53" netns | l2tp | fou | macsec | tcp_metrics | token | netconf | ila |\n"
93863328 54" vrf | sr }\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");
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62 exit(-1);
63}
64
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65static int do_help(int argc, char **argv)
66{
67 usage();
ec7aff5c 68 return 0;
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69}
70
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71static 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 },
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78 { "route", do_iproute },
79 { "rule", do_iprule },
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80 { "neighbor", do_ipneigh },
81 { "neighbour", do_ipneigh },
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82 { "ntable", do_ipntable },
83 { "ntbl", do_ipntable },
351efcde 84 { "link", do_iplink },
5aa08f6b 85 { "l2tp", do_ipl2tp },
6928747b 86 { "fou", do_ipfou },
ec71cae0 87 { "ila", do_ipila },
b26fc590 88 { "macsec", do_ipmacsec },
351efcde 89 { "tunnel", do_iptunnel },
ede72396 90 { "tunl", do_iptunnel },
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91 { "tuntap", do_iptuntap },
92 { "tap", do_iptuntap },
191b60bd 93 { "token", do_iptoken },
ea63a69b 94 { "tcpmetrics", do_tcp_metrics },
ec7aff5c 95 { "tcp_metrics", do_tcp_metrics },
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96 { "monitor", do_ipmonitor },
97 { "xfrm", do_xfrm },
84616f83 98 { "mroute", do_multiroute },
b6c8e808 99 { "mrule", do_multirule },
0dc34c77 100 { "netns", do_netns },
9d0efc10 101 { "netconf", do_ipnetconf },
1949f82c 102 { "vrf", do_ipvrf},
93863328 103 { "sr", do_seg6 },
fc57a9df 104 { "help", do_help },
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105 { 0 }
106};
107
108static int do_cmd(const char *argv0, int argc, char **argv)
109{
e25d6970 110 const struct cmd *c;
351efcde 111
ede72396 112 for (c = cmds; c->cmd; ++c) {
ec7aff5c 113 if (matches(argv0, c->cmd) == 0)
7397944d 114 return -(c->func(argc-1, argv+1));
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115 }
116
351efcde 117 fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0);
7397944d 118 return EXIT_FAILURE;
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119}
120
121static int batch(const char *name)
122{
123 char *line = NULL;
124 size_t len = 0;
7397944d 125 int ret = EXIT_SUCCESS;
531d5da4 126 int orig_family = preferred_family;
351efcde 127
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128 batch_mode = 1;
129
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130 if (name && strcmp(name, "-") != 0) {
131 if (freopen(name, "r", stdin) == NULL) {
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132 fprintf(stderr,
133 "Cannot open file \"%s\" for reading: %s\n",
351efcde 134 name, strerror(errno));
7397944d 135 return EXIT_FAILURE;
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136 }
137 }
138
139 if (rtnl_open(&rth, 0) < 0) {
140 fprintf(stderr, "Cannot open rtnetlink\n");
7397944d 141 return EXIT_FAILURE;
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142 }
143
3e4f6a38 144 cmdlineno = 0;
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145 while (getcmdline(&line, &len, stdin) != -1) {
146 char *largv[100];
147 int largc;
148
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149 preferred_family = orig_family;
150
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151 largc = makeargs(line, largv, 100);
152 if (largc == 0)
153 continue; /* blank line */
154
155 if (do_cmd(largv[0], largc, largv)) {
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156 fprintf(stderr, "Command failed %s:%d\n",
157 name, cmdlineno);
7397944d 158 ret = EXIT_FAILURE;
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159 if (!force)
160 break;
161 }
162 }
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163 if (line)
164 free(line);
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165
166 rtnl_close(&rth);
167 return ret;
168}
169
170
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171int main(int argc, char **argv)
172{
173 char *basename;
a3aa47a5 174 char *batch_file = NULL;
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175
176 basename = strrchr(argv[0], '/');
177 if (basename == NULL)
178 basename = argv[0];
179 else
180 basename++;
ae665a52 181
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182 while (argc > 1) {
183 char *opt = argv[1];
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184
185 if (strcmp(opt, "--") == 0) {
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186 argc--; argv++;
187 break;
188 }
189 if (opt[0] != '-')
190 break;
191 if (opt[1] == '-')
192 opt++;
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193 if (matches(opt, "-loops") == 0) {
194 argc--;
195 argv++;
196 if (argc <= 1)
197 usage();
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198 max_flush_loops = atoi(argv[1]);
199 } else if (matches(opt, "-family") == 0) {
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200 argc--;
201 argv++;
202 if (argc <= 1)
203 usage();
45c90d19 204 if (strcmp(argv[1], "help") == 0)
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205 usage();
206 else
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207 preferred_family = read_family(argv[1]);
208 if (preferred_family == AF_UNSPEC)
f1675d61 209 invarg("invalid protocol family", argv[1]);
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210 } else if (strcmp(opt, "-4") == 0) {
211 preferred_family = AF_INET;
212 } else if (strcmp(opt, "-6") == 0) {
213 preferred_family = AF_INET6;
214 } else if (strcmp(opt, "-0") == 0) {
215 preferred_family = AF_PACKET;
216 } else if (strcmp(opt, "-I") == 0) {
217 preferred_family = AF_IPX;
218 } else if (strcmp(opt, "-D") == 0) {
219 preferred_family = AF_DECnet;
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220 } else if (strcmp(opt, "-M") == 0) {
221 preferred_family = AF_MPLS;
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222 } else if (strcmp(opt, "-B") == 0) {
223 preferred_family = AF_BRIDGE;
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224 } else if (matches(opt, "-human") == 0 ||
225 matches(opt, "-human-readable") == 0) {
226 ++human_readable;
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227 } else if (matches(opt, "-iec") == 0) {
228 ++use_iec;
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229 } else if (matches(opt, "-stats") == 0 ||
230 matches(opt, "-statistics") == 0) {
231 ++show_stats;
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232 } else if (matches(opt, "-details") == 0) {
233 ++show_details;
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234 } else if (matches(opt, "-resolve") == 0) {
235 ++resolve_hosts;
236 } else if (matches(opt, "-oneline") == 0) {
237 ++oneline;
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238 } else if (matches(opt, "-timestamp") == 0) {
239 ++timestamp;
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240 } else if (matches(opt, "-tshort") == 0) {
241 ++timestamp;
242 ++timestamp_short;
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243#if 0
244 } else if (matches(opt, "-numeric") == 0) {
245 rtnl_names_numeric++;
246#endif
247 } else if (matches(opt, "-Version") == 0) {
248 printf("ip utility, iproute2-ss%s\n", SNAPSHOT);
249 exit(0);
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250 } else if (matches(opt, "-force") == 0) {
251 ++force;
252 } else if (matches(opt, "-batch") == 0) {
253 argc--;
254 argv++;
255 if (argc <= 1)
256 usage();
257 batch_file = argv[1];
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258 } else if (matches(opt, "-brief") == 0) {
259 ++brief;
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260 } else if (matches(opt, "-json") == 0) {
261 ++json;
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262 } else if (matches(opt, "-rcvbuf") == 0) {
263 unsigned int size;
264
265 argc--;
266 argv++;
267 if (argc <= 1)
268 usage();
269 if (get_unsigned(&size, argv[1], 0)) {
270 fprintf(stderr, "Invalid rcvbuf size '%s'\n",
271 argv[1]);
272 exit(-1);
273 }
274 rcvbuf = size;
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275 } else if (matches(opt, "-color") == 0) {
276 enable_color();
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277 } else if (matches(opt, "-help") == 0) {
278 usage();
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279 } else if (matches(opt, "-netns") == 0) {
280 NEXT_ARG();
281 if (netns_switch(argv[1]))
282 exit(-1);
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283 } else if (matches(opt, "-all") == 0) {
284 do_all = true;
aba5acdf 285 } else {
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286 fprintf(stderr,
287 "Option \"%s\" is unknown, try \"ip -help\".\n",
288 opt);
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289 exit(-1);
290 }
291 argc--; argv++;
292 }
293
ec7aff5c 294 _SL_ = oneline ? "\\" : "\n";
aba5acdf 295
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296 if (json)
297 check_if_color_enabled();
298
ae665a52 299 if (batch_file)
351efcde 300 return batch(batch_file);
ae665a52 301
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302 if (rtnl_open(&rth, 0) < 0)
303 exit(1);
304
ae665a52 305 if (strlen(basename) > 2)
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306 return do_cmd(basename+2, argc, argv);
307
ae665a52 308 if (argc > 1)
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309 return do_cmd(argv[1], argc-1, argv+1);
310
311 rtnl_close(&rth);
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312 usage();
313}