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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 := { address | addrlabel | fou | help | ila | ioam | l2tp | link |\n"
68 " macsec | maddress | monitor | mptcp | mroute | mrule |\n"
69 " neighbor | neighbour | netconf | netns | nexthop | ntable |\n"
70 " ntbl | route | rule | sr | tap | tcpmetrics |\n"
71 " token | tunnel | tuntap | vrf | xfrm }\n"
72 " OPTIONS := { -V[ersion] | -s[tatistics] | -d[etails] | -r[esolve] |\n"
73 " -h[uman-readable] | -iec | -j[son] | -p[retty] |\n"
74 " -f[amily] { inet | inet6 | mpls | bridge | link } |\n"
75 " -4 | -6 | -M | -B | -0 |\n"
76 " -l[oops] { maximum-addr-flush-attempts } | -br[ief] |\n"
77 " -o[neline] | -t[imestamp] | -ts[hort] | -b[atch] [filename] |\n"
78 " -rc[vbuf] [size] | -n[etns] name | -N[umeric] | -a[ll] |\n"
79 " -c[olor]}\n");
80 exit(-1);
81}
82
83static int do_help(int argc, char **argv)
84{
85 usage();
86 return 0;
87}
88
89static const struct cmd {
90 const char *cmd;
91 int (*func)(int argc, char **argv);
92} cmds[] = {
93 { "address", do_ipaddr },
94 { "addrlabel", do_ipaddrlabel },
95 { "maddress", do_multiaddr },
96 { "route", do_iproute },
97 { "rule", do_iprule },
98 { "neighbor", do_ipneigh },
99 { "neighbour", do_ipneigh },
100 { "ntable", do_ipntable },
101 { "ntbl", do_ipntable },
102 { "link", do_iplink },
103 { "l2tp", do_ipl2tp },
104 { "fou", do_ipfou },
105 { "ila", do_ipila },
106 { "macsec", do_ipmacsec },
107 { "tunnel", do_iptunnel },
108 { "tunl", do_iptunnel },
109 { "tuntap", do_iptuntap },
110 { "tap", do_iptuntap },
111 { "token", do_iptoken },
112 { "tcpmetrics", do_tcp_metrics },
113 { "tcp_metrics", do_tcp_metrics },
114 { "monitor", do_ipmonitor },
115 { "xfrm", do_xfrm },
116 { "mroute", do_multiroute },
117 { "mrule", do_multirule },
118 { "netns", do_netns },
119 { "netconf", do_ipnetconf },
120 { "vrf", do_ipvrf},
121 { "sr", do_seg6 },
122 { "nexthop", do_ipnh },
123 { "mptcp", do_mptcp },
124 { "ioam", do_ioam6 },
125 { "help", do_help },
126 { 0 }
127};
128
129static int do_cmd(const char *argv0, int argc, char **argv, bool final)
130{
131 const struct cmd *c;
132
133 for (c = cmds; c->cmd; ++c) {
134 if (matches(argv0, c->cmd) == 0)
135 return -(c->func(argc-1, argv+1));
136 }
137
138 if (final)
139 fprintf(stderr, "Object \"%s\" is unknown, try \"ip help\".\n", argv0);
140 return EXIT_FAILURE;
141}
142
143static int ip_batch_cmd(int argc, char *argv[], void *data)
144{
145 const int *orig_family = data;
146
147 preferred_family = *orig_family;
148 return do_cmd(argv[0], argc, argv, true);
149}
150
151static int batch(const char *name)
152{
153 int orig_family = preferred_family;
154 int ret;
155
156 if (rtnl_open(&rth, 0) < 0) {
157 fprintf(stderr, "Cannot open rtnetlink\n");
158 return EXIT_FAILURE;
159 }
160
161 batch_mode = 1;
162 ret = do_batch(name, force, ip_batch_cmd, &orig_family);
163
164 rtnl_close(&rth);
165 return ret;
166}
167
168int main(int argc, char **argv)
169{
170 const char *libbpf_version;
171 char *batch_file = NULL;
172 char *basename;
173 int color = 0;
174
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178
179
180
181
182
183 if (argc < 3 || strcmp(argv[1], "vrf") != 0 ||
184 strcmp(argv[2], "exec") != 0)
185 drop_cap();
186
187 basename = strrchr(argv[0], '/');
188 if (basename == NULL)
189 basename = argv[0];
190 else
191 basename++;
192
193 while (argc > 1) {
194 char *opt = argv[1];
195
196 if (strcmp(opt, "--") == 0) {
197 argc--; argv++;
198 break;
199 }
200 if (opt[0] != '-')
201 break;
202 if (opt[1] == '-')
203 opt++;
204 if (matches(opt, "-loops") == 0) {
205 argc--;
206 argv++;
207 if (argc <= 1)
208 usage();
209 max_flush_loops = atoi(argv[1]);
210 } else if (matches(opt, "-family") == 0) {
211 argc--;
212 argv++;
213 if (argc <= 1)
214 usage();
215 if (strcmp(argv[1], "help") == 0)
216 usage();
217 else
218 preferred_family = read_family(argv[1]);
219 if (preferred_family == AF_UNSPEC)
220 invarg("invalid protocol family", argv[1]);
221 } else if (strcmp(opt, "-4") == 0) {
222 preferred_family = AF_INET;
223 } else if (strcmp(opt, "-6") == 0) {
224 preferred_family = AF_INET6;
225 } else if (strcmp(opt, "-0") == 0) {
226 preferred_family = AF_PACKET;
227 } else if (strcmp(opt, "-M") == 0) {
228 preferred_family = AF_MPLS;
229 } else if (strcmp(opt, "-B") == 0) {
230 preferred_family = AF_BRIDGE;
231 } else if (matches(opt, "-human") == 0 ||
232 matches(opt, "-human-readable") == 0) {
233 ++human_readable;
234 } else if (matches(opt, "-iec") == 0) {
235 ++use_iec;
236 } else if (matches(opt, "-stats") == 0 ||
237 matches(opt, "-statistics") == 0) {
238 ++show_stats;
239 } else if (matches(opt, "-details") == 0) {
240 ++show_details;
241 } else if (matches(opt, "-resolve") == 0) {
242 ++resolve_hosts;
243 } else if (matches(opt, "-oneline") == 0) {
244 ++oneline;
245 } else if (matches(opt, "-timestamp") == 0) {
246 ++timestamp;
247 } else if (matches(opt, "-tshort") == 0) {
248 ++timestamp;
249 ++timestamp_short;
250 } else if (matches(opt, "-Version") == 0) {
251 printf("ip utility, iproute2-%s", version);
252 libbpf_version = get_libbpf_version();
253 if (libbpf_version)
254 printf(", libbpf %s", libbpf_version);
255 printf("\n");
256 exit(0);
257 } else if (matches(opt, "-force") == 0) {
258 ++force;
259 } else if (matches(opt, "-batch") == 0) {
260 argc--;
261 argv++;
262 if (argc <= 1)
263 usage();
264 batch_file = argv[1];
265 } else if (matches(opt, "-brief") == 0) {
266 ++brief;
267 } else if (matches(opt, "-json") == 0) {
268 ++json;
269 } else if (matches(opt, "-pretty") == 0) {
270 ++pretty;
271 } else if (matches(opt, "-rcvbuf") == 0) {
272 unsigned int size;
273
274 argc--;
275 argv++;
276 if (argc <= 1)
277 usage();
278 if (get_unsigned(&size, argv[1], 0)) {
279 fprintf(stderr, "Invalid rcvbuf size '%s'\n",
280 argv[1]);
281 exit(-1);
282 }
283 rcvbuf = size;
284 } else if (matches_color(opt, &color)) {
285 } else if (matches(opt, "-help") == 0) {
286 usage();
287 } else if (matches(opt, "-netns") == 0) {
288 NEXT_ARG();
289 if (netns_switch(argv[1]))
290 exit(-1);
291 } else if (matches(opt, "-Numeric") == 0) {
292 ++numeric;
293 } else if (matches(opt, "-all") == 0) {
294 do_all = true;
295 } else {
296 fprintf(stderr,
297 "Option \"%s\" is unknown, try \"ip -help\".\n",
298 opt);
299 exit(-1);
300 }
301 argc--; argv++;
302 }
303
304 _SL_ = oneline ? "\\" : "\n";
305
306 check_enable_color(color, json);
307
308 if (batch_file)
309 return batch(batch_file);
310
311 if (rtnl_open(&rth, 0) < 0)
312 exit(1);
313
314 rtnl_set_strict_dump(&rth);
315
316 if (strlen(basename) > 2) {
317 int ret = do_cmd(basename+2, argc, argv, false);
318 if (ret != EXIT_FAILURE)
319 return ret;
320 }
321
322 if (argc > 1)
323 return do_cmd(argv[1], argc-1, argv+1, true);
324
325 rtnl_close(&rth);
326 usage();
327}
328
