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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" |
aba5acdf SH |
26 | |
27 | int preferred_family = AF_UNSPEC; | |
b68d9837 | 28 | int human_readable = 0; |
1e264abc | 29 | int use_iec = 0; |
aba5acdf | 30 | int show_stats = 0; |
1d934839 | 31 | int show_details = 0; |
aba5acdf SH |
32 | int resolve_hosts = 0; |
33 | int oneline = 0; | |
90f93024 | 34 | int timestamp = 0; |
aba5acdf | 35 | char * _SL_ = NULL; |
351efcde | 36 | int force = 0; |
64c79560 | 37 | int max_flush_loops = 10; |
a3aa47a5 | 38 | int batch_mode = 0; |
b13ba03f | 39 | bool do_all = false; |
64c79560 | 40 | |
3bfa73ff | 41 | struct rtnl_handle rth = { .fd = -1 }; |
aba5acdf SH |
42 | |
43 | static void usage(void) __attribute__((noreturn)); | |
44 | ||
45 | static void usage(void) | |
46 | { | |
47 | fprintf(stderr, | |
48 | "Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n" | |
10494d27 | 49 | " ip [ -force ] -batch filename\n" |
4759758c | 50 | "where OBJECT := { link | addr | addrlabel | route | rule | neigh | ntable |\n" |
0dc34c77 | 51 | " tunnel | tuntap | maddr | mroute | mrule | monitor | xfrm |\n" |
6928747b | 52 | " netns | l2tp | fou | tcp_metrics | token | netconf }\n" |
1d934839 | 53 | " OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n" |
1e264abc | 54 | " -h[uman-readable] | -iec |\n" |
27bca615 | 55 | " -f[amily] { inet | inet6 | ipx | dnet | bridge | link } |\n" |
f4809174 | 56 | " -4 | -6 | -I | -D | -B | -0 |\n" |
64c79560 | 57 | " -l[oops] { maximum-addr-flush-attempts } |\n" |
a925535c | 58 | " -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |\n" |
b13ba03f | 59 | " -rc[vbuf] [size] | -n[etns] name | -a[ll] }\n"); |
aba5acdf SH |
60 | exit(-1); |
61 | } | |
62 | ||
fc57a9df SH |
63 | static int do_help(int argc, char **argv) |
64 | { | |
65 | usage(); | |
ecf52428 | 66 | return 0; |
fc57a9df SH |
67 | } |
68 | ||
351efcde SH |
69 | static const struct cmd { |
70 | const char *cmd; | |
71 | int (*func)(int argc, char **argv); | |
72 | } cmds[] = { | |
4806867a | 73 | { "address", do_ipaddr }, |
4759758c | 74 | { "addrlabel", do_ipaddrlabel }, |
ede72396 | 75 | { "maddress", do_multiaddr }, |
351efcde SH |
76 | { "route", do_iproute }, |
77 | { "rule", do_iprule }, | |
ede72396 SH |
78 | { "neighbor", do_ipneigh }, |
79 | { "neighbour", do_ipneigh }, | |
09954dc6 SH |
80 | { "ntable", do_ipntable }, |
81 | { "ntbl", do_ipntable }, | |
351efcde | 82 | { "link", do_iplink }, |
5aa08f6b | 83 | { "l2tp", do_ipl2tp }, |
6928747b | 84 | { "fou", do_ipfou }, |
351efcde | 85 | { "tunnel", do_iptunnel }, |
ede72396 | 86 | { "tunl", do_iptunnel }, |
580fbd88 DW |
87 | { "tuntap", do_iptuntap }, |
88 | { "tap", do_iptuntap }, | |
191b60bd | 89 | { "token", do_iptoken }, |
ea63a69b JA |
90 | { "tcpmetrics", do_tcp_metrics }, |
91 | { "tcp_metrics",do_tcp_metrics }, | |
351efcde SH |
92 | { "monitor", do_ipmonitor }, |
93 | { "xfrm", do_xfrm }, | |
84616f83 | 94 | { "mroute", do_multiroute }, |
b6c8e808 | 95 | { "mrule", do_multirule }, |
0dc34c77 | 96 | { "netns", do_netns }, |
9d0efc10 | 97 | { "netconf", do_ipnetconf }, |
fc57a9df | 98 | { "help", do_help }, |
351efcde SH |
99 | { 0 } |
100 | }; | |
101 | ||
102 | static int do_cmd(const char *argv0, int argc, char **argv) | |
103 | { | |
e25d6970 | 104 | const struct cmd *c; |
351efcde | 105 | |
ede72396 | 106 | for (c = cmds; c->cmd; ++c) { |
7397944d SH |
107 | if (matches(argv0, c->cmd) == 0) { |
108 | return -(c->func(argc-1, argv+1)); | |
109 | } | |
ede72396 SH |
110 | } |
111 | ||
351efcde | 112 | fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0); |
7397944d | 113 | return EXIT_FAILURE; |
351efcde SH |
114 | } |
115 | ||
116 | static int batch(const char *name) | |
117 | { | |
118 | char *line = NULL; | |
119 | size_t len = 0; | |
7397944d | 120 | int ret = EXIT_SUCCESS; |
351efcde | 121 | |
a3aa47a5 SH |
122 | batch_mode = 1; |
123 | ||
351efcde SH |
124 | if (name && strcmp(name, "-") != 0) { |
125 | if (freopen(name, "r", stdin) == NULL) { | |
692e0757 | 126 | fprintf(stderr, "Cannot open file \"%s\" for reading: %s\n", |
351efcde | 127 | name, strerror(errno)); |
7397944d | 128 | return EXIT_FAILURE; |
351efcde SH |
129 | } |
130 | } | |
131 | ||
132 | if (rtnl_open(&rth, 0) < 0) { | |
133 | fprintf(stderr, "Cannot open rtnetlink\n"); | |
7397944d | 134 | return EXIT_FAILURE; |
351efcde SH |
135 | } |
136 | ||
3e4f6a38 | 137 | cmdlineno = 0; |
351efcde SH |
138 | while (getcmdline(&line, &len, stdin) != -1) { |
139 | char *largv[100]; | |
140 | int largc; | |
141 | ||
142 | largc = makeargs(line, largv, 100); | |
143 | if (largc == 0) | |
144 | continue; /* blank line */ | |
145 | ||
146 | if (do_cmd(largv[0], largc, largv)) { | |
3e4f6a38 | 147 | fprintf(stderr, "Command failed %s:%d\n", name, cmdlineno); |
7397944d | 148 | ret = EXIT_FAILURE; |
351efcde SH |
149 | if (!force) |
150 | break; | |
151 | } | |
152 | } | |
8ed63ab1 SH |
153 | if (line) |
154 | free(line); | |
351efcde SH |
155 | |
156 | rtnl_close(&rth); | |
157 | return ret; | |
158 | } | |
159 | ||
160 | ||
aba5acdf SH |
161 | int main(int argc, char **argv) |
162 | { | |
163 | char *basename; | |
a3aa47a5 | 164 | char *batch_file = NULL; |
aba5acdf SH |
165 | |
166 | basename = strrchr(argv[0], '/'); | |
167 | if (basename == NULL) | |
168 | basename = argv[0]; | |
169 | else | |
170 | basename++; | |
ae665a52 | 171 | |
aba5acdf SH |
172 | while (argc > 1) { |
173 | char *opt = argv[1]; | |
174 | if (strcmp(opt,"--") == 0) { | |
175 | argc--; argv++; | |
176 | break; | |
177 | } | |
178 | if (opt[0] != '-') | |
179 | break; | |
180 | if (opt[1] == '-') | |
181 | opt++; | |
64c79560 BG |
182 | if (matches(opt, "-loops") == 0) { |
183 | argc--; | |
184 | argv++; | |
185 | if (argc <= 1) | |
186 | usage(); | |
187 | max_flush_loops = atoi(argv[1]); | |
188 | } else if (matches(opt, "-family") == 0) { | |
aba5acdf SH |
189 | argc--; |
190 | argv++; | |
191 | if (argc <= 1) | |
192 | usage(); | |
45c90d19 | 193 | if (strcmp(argv[1], "help") == 0) |
aba5acdf SH |
194 | usage(); |
195 | else | |
45c90d19 EB |
196 | preferred_family = read_family(argv[1]); |
197 | if (preferred_family == AF_UNSPEC) | |
f1675d61 | 198 | invarg("invalid protocol family", argv[1]); |
aba5acdf SH |
199 | } else if (strcmp(opt, "-4") == 0) { |
200 | preferred_family = AF_INET; | |
201 | } else if (strcmp(opt, "-6") == 0) { | |
202 | preferred_family = AF_INET6; | |
203 | } else if (strcmp(opt, "-0") == 0) { | |
204 | preferred_family = AF_PACKET; | |
205 | } else if (strcmp(opt, "-I") == 0) { | |
206 | preferred_family = AF_IPX; | |
207 | } else if (strcmp(opt, "-D") == 0) { | |
208 | preferred_family = AF_DECnet; | |
27bca615 SH |
209 | } else if (strcmp(opt, "-B") == 0) { |
210 | preferred_family = AF_BRIDGE; | |
b68d9837 CH |
211 | } else if (matches(opt, "-human") == 0 || |
212 | matches(opt, "-human-readable") == 0) { | |
213 | ++human_readable; | |
1e264abc SH |
214 | } else if (matches(opt, "-iec") == 0) { |
215 | ++use_iec; | |
aba5acdf SH |
216 | } else if (matches(opt, "-stats") == 0 || |
217 | matches(opt, "-statistics") == 0) { | |
218 | ++show_stats; | |
1d934839 PM |
219 | } else if (matches(opt, "-details") == 0) { |
220 | ++show_details; | |
aba5acdf SH |
221 | } else if (matches(opt, "-resolve") == 0) { |
222 | ++resolve_hosts; | |
223 | } else if (matches(opt, "-oneline") == 0) { | |
224 | ++oneline; | |
90f93024 SH |
225 | } else if (matches(opt, "-timestamp") == 0) { |
226 | ++timestamp; | |
79aa79d0 VK |
227 | } else if (matches(opt, "-tshort") == 0) { |
228 | ++timestamp; | |
229 | ++timestamp_short; | |
aba5acdf SH |
230 | #if 0 |
231 | } else if (matches(opt, "-numeric") == 0) { | |
232 | rtnl_names_numeric++; | |
233 | #endif | |
234 | } else if (matches(opt, "-Version") == 0) { | |
235 | printf("ip utility, iproute2-ss%s\n", SNAPSHOT); | |
236 | exit(0); | |
351efcde SH |
237 | } else if (matches(opt, "-force") == 0) { |
238 | ++force; | |
239 | } else if (matches(opt, "-batch") == 0) { | |
240 | argc--; | |
241 | argv++; | |
242 | if (argc <= 1) | |
243 | usage(); | |
244 | batch_file = argv[1]; | |
7f03191f PM |
245 | } else if (matches(opt, "-rcvbuf") == 0) { |
246 | unsigned int size; | |
247 | ||
248 | argc--; | |
249 | argv++; | |
250 | if (argc <= 1) | |
251 | usage(); | |
252 | if (get_unsigned(&size, argv[1], 0)) { | |
253 | fprintf(stderr, "Invalid rcvbuf size '%s'\n", | |
254 | argv[1]); | |
255 | exit(-1); | |
256 | } | |
257 | rcvbuf = size; | |
aba5acdf SH |
258 | } else if (matches(opt, "-help") == 0) { |
259 | usage(); | |
52700d40 VK |
260 | } else if (matches(opt, "-netns") == 0) { |
261 | NEXT_ARG(); | |
262 | if (netns_switch(argv[1])) | |
263 | exit(-1); | |
b13ba03f VK |
264 | } else if (matches(opt, "-all") == 0) { |
265 | do_all = true; | |
aba5acdf SH |
266 | } else { |
267 | fprintf(stderr, "Option \"%s\" is unknown, try \"ip -help\".\n", opt); | |
268 | exit(-1); | |
269 | } | |
270 | argc--; argv++; | |
271 | } | |
272 | ||
273 | _SL_ = oneline ? "\\" : "\n" ; | |
274 | ||
ae665a52 | 275 | if (batch_file) |
351efcde | 276 | return batch(batch_file); |
ae665a52 | 277 | |
351efcde SH |
278 | if (rtnl_open(&rth, 0) < 0) |
279 | exit(1); | |
280 | ||
ae665a52 | 281 | if (strlen(basename) > 2) |
351efcde SH |
282 | return do_cmd(basename+2, argc, argv); |
283 | ||
ae665a52 | 284 | if (argc > 1) |
351efcde SH |
285 | return do_cmd(argv[1], argc-1, argv+1); |
286 | ||
287 | rtnl_close(&rth); | |
aba5acdf SH |
288 | usage(); |
289 | } |