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12#include <stdio.h>
13#include <stdlib.h>
14#include <unistd.h>
15#include <fcntl.h>
16#include <sys/socket.h>
17#include <netinet/in.h>
18#include <string.h>
19#include <errno.h>
20
21#include "version.h"
22#include "utils.h"
23#include "ip_common.h"
24#include "namespace.h"
25#include "color.h"
26#include "rt_names.h"
27#include "bpf_util.h"
28
29#ifndef LIBDIR
30#define LIBDIR "/usr/lib"
31#endif
32
33int preferred_family = AF_UNSPEC;
34int human_readable;
35int use_iec;
36int show_stats;
37int show_details;
38int oneline;
39int brief;
40int json;
41int timestamp;
42int force;
43int max_flush_loops = 10;
44int batch_mode;
45bool do_all;
46
47struct rtnl_handle rth = { .fd = -1 };
48
49const char *get_ip_lib_dir(void)
50{
51 const char *lib_dir;
52
53 lib_dir = getenv("IP_LIB_DIR");
54 if (!lib_dir)
55 lib_dir = LIBDIR "/ip";
56
57 return lib_dir;
58}
59
60static void usage(void) __attribute__((noreturn));
61
62static void usage(void)
63{
64 fprintf(stderr,
65 "Usage: ip [ OPTIONS ] OBJECT { COMMAND | help }\n"
66 " ip [ -force ] -batch filename\n"
67 "where OBJECT := { link | address | addrlabel | route | rule | neigh | ntable |\n"
68 " tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm |\n"
69 " netns | l2tp | fou | macsec | tcp_metrics | token | netconf | ila |\n"
70 " vrf | sr | nexthop | mptcp }\n"
71 " OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n"
72 " -h[uman-readable] | -iec | -j[son] | -p[retty] |\n"
73 " -f[amily] { inet | inet6 | mpls | bridge | link } |\n"
74 " -4 | -6 | -I | -D | -M | -B | -0 |\n"
75 " -l[oops] { maximum-addr-flush-attempts } | -br[ief] |\n"
76 " -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |\n"
77 " -rc[vbuf] [size] | -n[etns] name | -N[umeric] | -a[ll] |\n"
78 " -c[olor]}\n");
79 exit(-1);
80}
81
82static int do_help(int argc, char **argv)
83{
84 usage();
85 return 0;
86}
87
88static const struct cmd {
89 const char *cmd;
90 int (*func)(int argc, char **argv);
91} cmds[] = {
92 { "address", do_ipaddr },
93 { "addrlabel", do_ipaddrlabel },
94 { "maddress", do_multiaddr },
95 { "route", do_iproute },
96 { "rule", do_iprule },
97 { "neighbor", do_ipneigh },
98 { "neighbour", do_ipneigh },
99 { "ntable", do_ipntable },
100 { "ntbl", do_ipntable },
101 { "link", do_iplink },
102 { "l2tp", do_ipl2tp },
103 { "fou", do_ipfou },
104 { "ila", do_ipila },
105 { "macsec", do_ipmacsec },
106 { "tunnel", do_iptunnel },
107 { "tunl", do_iptunnel },
108 { "tuntap", do_iptuntap },
109 { "tap", do_iptuntap },
110 { "token", do_iptoken },
111 { "tcpmetrics", do_tcp_metrics },
112 { "tcp_metrics", do_tcp_metrics },
113 { "monitor", do_ipmonitor },
114 { "xfrm", do_xfrm },
115 { "mroute", do_multiroute },
116 { "mrule", do_multirule },
117 { "netns", do_netns },
118 { "netconf", do_ipnetconf },
119 { "vrf", do_ipvrf},
120 { "sr", do_seg6 },
121 { "nexthop", do_ipnh },
122 { "mptcp", do_mptcp },
123 { "help", do_help },
124 { 0 }
125};
126
127static int do_cmd(const char *argv0, int argc, char **argv)
128{
129 const struct cmd *c;
130
131 for (c = cmds; c->cmd; ++c) {
132 if (matches(argv0, c->cmd) == 0)
133 return -(c->func(argc-1, argv+1));
134 }
135
136 fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0);
137 return EXIT_FAILURE;
138}
139
140static int ip_batch_cmd(int argc, char *argv[], void *data)
141{
142 const int *orig_family = data;
143
144 preferred_family = *orig_family;
145 return do_cmd(argv[0], argc, argv);
146}
147
148static int batch(const char *name)
149{
150 int orig_family = preferred_family;
151 int ret;
152
153 if (rtnl_open(&rth, 0) < 0) {
154 fprintf(stderr, "Cannot open rtnetlink\n");
155 return EXIT_FAILURE;
156 }
157
158 ret = do_batch(name, force, ip_batch_cmd, &orig_family);
159
160 rtnl_close(&rth);
161 return ret;
162}
163
164int main(int argc, char **argv)
165{
166 const char *libbpf_version;
167 char *batch_file = NULL;
168 char *basename;
169 int color = 0;
170
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177
178
179 if (argc < 3 || strcmp(argv[1], "vrf") != 0 ||
180 strcmp(argv[2], "exec") != 0)
181 drop_cap();
182
183 basename = strrchr(argv[0], '/');
184 if (basename == NULL)
185 basename = argv[0];
186 else
187 basename++;
188
189 while (argc > 1) {
190 char *opt = argv[1];
191
192 if (strcmp(opt, "--") == 0) {
193 argc--; argv++;
194 break;
195 }
196 if (opt[0] != '-')
197 break;
198 if (opt[1] == '-')
199 opt++;
200 if (matches(opt, "-loops") == 0) {
201 argc--;
202 argv++;
203 if (argc <= 1)
204 usage();
205 max_flush_loops = atoi(argv[1]);
206 } else if (matches(opt, "-family") == 0) {
207 argc--;
208 argv++;
209 if (argc <= 1)
210 usage();
211 if (strcmp(argv[1], "help") == 0)
212 usage();
213 else
214 preferred_family = read_family(argv[1]);
215 if (preferred_family == AF_UNSPEC)
216 invarg("invalid protocol family", argv[1]);
217 } else if (strcmp(opt, "-4") == 0) {
218 preferred_family = AF_INET;
219 } else if (strcmp(opt, "-6") == 0) {
220 preferred_family = AF_INET6;
221 } else if (strcmp(opt, "-0") == 0) {
222 preferred_family = AF_PACKET;
223 } else if (strcmp(opt, "-D") == 0) {
224 preferred_family = AF_DECnet;
225 } else if (strcmp(opt, "-M") == 0) {
226 preferred_family = AF_MPLS;
227 } else if (strcmp(opt, "-B") == 0) {
228 preferred_family = AF_BRIDGE;
229 } else if (matches(opt, "-human") == 0 ||
230 matches(opt, "-human-readable") == 0) {
231 ++human_readable;
232 } else if (matches(opt, "-iec") == 0) {
233 ++use_iec;
234 } else if (matches(opt, "-stats") == 0 ||
235 matches(opt, "-statistics") == 0) {
236 ++show_stats;
237 } else if (matches(opt, "-details") == 0) {
238 ++show_details;
239 } else if (matches(opt, "-resolve") == 0) {
240 ++resolve_hosts;
241 } else if (matches(opt, "-oneline") == 0) {
242 ++oneline;
243 } else if (matches(opt, "-timestamp") == 0) {
244 ++timestamp;
245 } else if (matches(opt, "-tshort") == 0) {
246 ++timestamp;
247 ++timestamp_short;
248 } else if (matches(opt, "-Version") == 0) {
249 printf("ip utility, iproute2-%s", version);
250 libbpf_version = get_libbpf_version();
251 if (libbpf_version)
252 printf(", libbpf %s", libbpf_version);
253 printf("\n");
254 exit(0);
255 } else if (matches(opt, "-force") == 0) {
256 ++force;
257 } else if (matches(opt, "-batch") == 0) {
258 argc--;
259 argv++;
260 if (argc <= 1)
261 usage();
262 batch_file = argv[1];
263 } else if (matches(opt, "-brief") == 0) {
264 ++brief;
265 } else if (matches(opt, "-json") == 0) {
266 ++json;
267 } else if (matches(opt, "-pretty") == 0) {
268 ++pretty;
269 } else if (matches(opt, "-rcvbuf") == 0) {
270 unsigned int size;
271
272 argc--;
273 argv++;
274 if (argc <= 1)
275 usage();
276 if (get_unsigned(&size, argv[1], 0)) {
277 fprintf(stderr, "Invalid rcvbuf size '%s'\n",
278 argv[1]);
279 exit(-1);
280 }
281 rcvbuf = size;
282 } else if (matches_color(opt, &color)) {
283 } else if (matches(opt, "-help") == 0) {
284 usage();
285 } else if (matches(opt, "-netns") == 0) {
286 NEXT_ARG();
287 if (netns_switch(argv[1]))
288 exit(-1);
289 } else if (matches(opt, "-Numeric") == 0) {
290 ++numeric;
291 } else if (matches(opt, "-all") == 0) {
292 do_all = true;
293 } else {
294 fprintf(stderr,
295 "Option \"%s\" is unknown, try \"ip -help\".\n",
296 opt);
297 exit(-1);
298 }
299 argc--; argv++;
300 }
301
302 _SL_ = oneline ? "\\" : "\n";
303
304 check_enable_color(color, json);
305
306 if (batch_file)
307 return batch(batch_file);
308
309 if (rtnl_open(&rth, 0) < 0)
310 exit(1);
311
312 rtnl_set_strict_dump(&rth);
313
314 if (strlen(basename) > 2)
315 return do_cmd(basename+2, argc, argv);
316
317 if (argc > 1)
318 return do_cmd(argv[1], argc-1, argv+1);
319
320 rtnl_close(&rth);
321 usage();
322}
323
