Commit | Line | Data |
---|---|---|
0fd5cf4f MK |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
b3eab9f9 | 7 | #ifndef lint |
0fd5cf4f MK |
8 | char copyright[] = |
9 | "@(#) Copyright (c) 1983 Regents of the University of California.\n\ | |
10 | All rights reserved.\n"; | |
11 | #endif not lint | |
12 | ||
13 | #ifndef lint | |
6066ec2d | 14 | static char sccsid[] = "@(#)ifconfig.c 4.16 (Berkeley) %G%"; |
0fd5cf4f MK |
15 | #endif not lint |
16 | ||
b3eab9f9 SL |
17 | #include <sys/types.h> |
18 | #include <sys/socket.h> | |
19 | #include <sys/ioctl.h> | |
20 | ||
b3eab9f9 | 21 | #include <net/if.h> |
62e9bc4a KS |
22 | #include <netinet/in.h> |
23 | ||
24 | #define NSIP | |
25 | #include <netns/ns.h> | |
26 | #include <netns/ns_if.h> | |
b3eab9f9 SL |
27 | |
28 | #include <stdio.h> | |
29 | #include <errno.h> | |
30 | #include <ctype.h> | |
31 | #include <netdb.h> | |
32 | ||
62e9bc4a | 33 | extern int errno; |
b3eab9f9 SL |
34 | struct ifreq ifr; |
35 | struct sockaddr_in sin = { AF_INET }; | |
0fd5cf4f MK |
36 | struct sockaddr_in broadaddr; |
37 | struct sockaddr_in netmask = { AF_INET }; | |
62e9bc4a | 38 | struct sockaddr_in ipdst = { AF_INET }; |
b3eab9f9 | 39 | char name[30]; |
0fd5cf4f | 40 | int flags; |
f5f09b9d | 41 | int metric; |
dea973a0 | 42 | int setaddr; |
0fd5cf4f MK |
43 | int setmask; |
44 | int setbroadaddr; | |
62e9bc4a | 45 | int setipdst; |
b3eab9f9 | 46 | int s; |
0fd5cf4f MK |
47 | extern int errno; |
48 | ||
49 | int setifflags(), setifaddr(), setifdstaddr(), setifnetmask(); | |
f5f09b9d | 50 | int setifmetric(), setifbroadaddr(), setifipdst(); |
b3eab9f9 | 51 | |
0fd5cf4f | 52 | #define NEXTARG 0xffffff |
b3eab9f9 SL |
53 | |
54 | struct cmd { | |
55 | char *c_name; | |
0fd5cf4f | 56 | int c_parameter; /* NEXTARG means next argv */ |
b3eab9f9 SL |
57 | int (*c_func)(); |
58 | } cmds[] = { | |
59 | { "up", IFF_UP, setifflags } , | |
60 | { "down", -IFF_UP, setifflags }, | |
61 | { "trailers", -IFF_NOTRAILERS,setifflags }, | |
62 | { "-trailers", IFF_NOTRAILERS, setifflags }, | |
1095926d MK |
63 | { "arp", -IFF_NOARP, setifflags }, |
64 | { "-arp", IFF_NOARP, setifflags }, | |
717eb130 CL |
65 | { "debug", IFF_DEBUG, setifflags }, |
66 | { "-debug", -IFF_DEBUG, setifflags }, | |
a390ced5 | 67 | #ifdef notdef |
0fd5cf4f | 68 | #define EN_SWABIPS 0x1000 |
a390ced5 SL |
69 | { "swabips", EN_SWABIPS, setifflags }, |
70 | { "-swabips", -EN_SWABIPS, setifflags }, | |
71 | #endif | |
0fd5cf4f | 72 | { "netmask", NEXTARG, setifnetmask }, |
f5f09b9d | 73 | { "metric", NEXTARG, setifmetric }, |
0fd5cf4f | 74 | { "broadcast", NEXTARG, setifbroadaddr }, |
62e9bc4a | 75 | { "ipdst", NEXTARG, setifipdst }, |
b3eab9f9 | 76 | { 0, 0, setifaddr }, |
40a42b7f | 77 | { 0, 0, setifdstaddr }, |
b3eab9f9 SL |
78 | }; |
79 | ||
62e9bc4a KS |
80 | /* |
81 | * XNS support liberally adapted from | |
82 | * code written at the University of Maryland | |
83 | * principally by James O'Toole and Chris Torek. | |
84 | */ | |
85 | ||
86 | int in_status(), in_getaddr(); | |
87 | int xns_status(), xns_getaddr(); | |
88 | ||
89 | /* Known address families */ | |
90 | struct afswtch { | |
91 | char *af_name; | |
92 | short af_af; | |
93 | int (*af_status)(); | |
94 | int (*af_getaddr)(); | |
95 | } afs[] = { | |
96 | { "inet", AF_INET, in_status, in_getaddr }, | |
97 | { "ns", AF_NS, xns_status, xns_getaddr }, | |
98 | { 0, 0, 0, 0 } | |
99 | }; | |
100 | ||
101 | struct afswtch *afp; /*the address family being set or asked about*/ | |
102 | ||
b3eab9f9 SL |
103 | main(argc, argv) |
104 | int argc; | |
105 | char *argv[]; | |
106 | { | |
62e9bc4a | 107 | int af = AF_INET; |
b3eab9f9 | 108 | if (argc < 2) { |
f5f09b9d MK |
109 | fprintf(stderr, "usage: ifconfig interface\n%s%s%s%s", |
110 | "\t[ af [ address [ dest_addr ] ] [ up ] [ down ]", | |
111 | "[ netmask mask ] ]\n", | |
112 | "\t[ metric n ]\n", | |
113 | "\t[ trailers | -trailers ]\n", | |
114 | "\t[ arp | -arp ]\n"); | |
b3eab9f9 SL |
115 | exit(1); |
116 | } | |
62e9bc4a | 117 | argc--, argv++; |
63f46c0f | 118 | strncpy(name, *argv, sizeof(name)); |
62e9bc4a KS |
119 | strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name)); |
120 | argc--, argv++; | |
121 | if (argc > 0) { | |
122 | struct afswtch *myafp; | |
123 | ||
124 | for (myafp = afp = afs; myafp->af_name; myafp++) | |
125 | if (strcmp(myafp->af_name, *argv) == 0) { | |
126 | afp = myafp; argc--; argv++; | |
127 | break; | |
128 | } | |
129 | af = ifr.ifr_addr.sa_family = afp->af_af; | |
130 | } | |
131 | s = socket(af, SOCK_DGRAM, 0); | |
b3eab9f9 SL |
132 | if (s < 0) { |
133 | perror("ifconfig: socket"); | |
134 | exit(1); | |
135 | } | |
b3eab9f9 SL |
136 | if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) { |
137 | Perror("ioctl (SIOCGIFFLAGS)"); | |
138 | exit(1); | |
139 | } | |
62e9bc4a | 140 | strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); |
0fd5cf4f | 141 | flags = ifr.ifr_flags; |
f5f09b9d MK |
142 | if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0) |
143 | perror("ioctl (SIOCGIFMETRIC)"); | |
144 | else | |
145 | metric = ifr.ifr_metric; | |
62e9bc4a KS |
146 | if (af == AF_INET) { |
147 | if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) { | |
148 | if (errno != EADDRNOTAVAIL) | |
149 | Perror("ioctl (SIOCGIFNETMASK)"); | |
150 | } else | |
151 | netmask.sin_addr = | |
152 | ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr; | |
153 | strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); | |
154 | } | |
b3eab9f9 SL |
155 | if (argc == 0) { |
156 | status(); | |
157 | exit(0); | |
158 | } | |
159 | while (argc > 0) { | |
160 | register struct cmd *p; | |
161 | ||
162 | for (p = cmds; p->c_name; p++) | |
163 | if (strcmp(*argv, p->c_name) == 0) | |
164 | break; | |
40a42b7f TF |
165 | if (p->c_name == 0 && setaddr) |
166 | p++; /* got src, do dst */ | |
0fd5cf4f MK |
167 | if (p->c_func) { |
168 | if (p->c_parameter == NEXTARG) { | |
169 | (*p->c_func)(argv[1]); | |
170 | argc--, argv++; | |
171 | } else | |
172 | (*p->c_func)(*argv, p->c_parameter); | |
173 | } | |
b3eab9f9 SL |
174 | argc--, argv++; |
175 | } | |
62e9bc4a | 176 | if ((setmask || setaddr) && (af == AF_INET)){ |
0fd5cf4f MK |
177 | /* |
178 | * If setting the address and not the mask, | |
179 | * clear any existing mask and the kernel will then | |
180 | * assign the default. If setting both, | |
181 | * set the mask first, so the address will be | |
182 | * interpreted correctly. | |
183 | */ | |
0fd5cf4f MK |
184 | ifr.ifr_addr = *(struct sockaddr *)&netmask; |
185 | if (ioctl(s, SIOCSIFNETMASK, (caddr_t)&ifr) < 0) | |
186 | Perror("ioctl (SIOCSIFNETMASK)"); | |
187 | } | |
62e9bc4a KS |
188 | if (setipdst && af==AF_NS) { |
189 | struct nsip_req rq; | |
190 | int size = sizeof(rq); | |
191 | ||
192 | rq.rq_ns = *(struct sockaddr *) &sin; | |
193 | rq.rq_ip = *(struct sockaddr *) &ipdst; | |
194 | ||
195 | if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0) | |
196 | Perror("Encapsulation Routing"); | |
197 | setaddr = 0; | |
198 | } | |
dea973a0 | 199 | if (setaddr) { |
dea973a0 MK |
200 | ifr.ifr_addr = *(struct sockaddr *) &sin; |
201 | if (ioctl(s, SIOCSIFADDR, (caddr_t)&ifr) < 0) | |
202 | Perror("ioctl (SIOCSIFADDR)"); | |
203 | } | |
0fd5cf4f | 204 | if (setbroadaddr) { |
0fd5cf4f MK |
205 | ifr.ifr_addr = *(struct sockaddr *)&broadaddr; |
206 | if (ioctl(s, SIOCSIFBRDADDR, (caddr_t)&ifr) < 0) | |
207 | Perror("ioctl (SIOCSIFBRDADDR)"); | |
208 | } | |
b3eab9f9 SL |
209 | exit(0); |
210 | } | |
211 | ||
212 | /*ARGSUSED*/ | |
213 | setifaddr(addr, param) | |
214 | char *addr; | |
62e9bc4a | 215 | short param; |
b3eab9f9 | 216 | { |
dea973a0 MK |
217 | /* |
218 | * Delay the ioctl to set the interface addr until flags are all set. | |
219 | * The address interpretation may depend on the flags, | |
220 | * and the flags may change when the address is set. | |
a9575a9a | 221 | */ |
dea973a0 | 222 | setaddr++; |
62e9bc4a | 223 | (*afp->af_getaddr)(addr, &sin); |
b3eab9f9 SL |
224 | } |
225 | ||
0fd5cf4f MK |
226 | setifnetmask(addr) |
227 | char *addr; | |
228 | { | |
62e9bc4a | 229 | in_getaddr(addr, &netmask); |
0fd5cf4f MK |
230 | setmask++; |
231 | } | |
232 | ||
233 | setifbroadaddr(addr) | |
234 | char *addr; | |
235 | { | |
62e9bc4a | 236 | (*afp->af_getaddr)(addr, &broadaddr); |
0fd5cf4f MK |
237 | setbroadaddr++; |
238 | } | |
239 | ||
62e9bc4a KS |
240 | setifipdst(addr) |
241 | char *addr; | |
242 | { | |
243 | in_getaddr(addr, &ipdst); | |
244 | setipdst++; | |
245 | } | |
246 | ||
40a42b7f TF |
247 | /*ARGSUSED*/ |
248 | setifdstaddr(addr, param) | |
249 | char *addr; | |
250 | int param; | |
251 | { | |
252 | ||
62e9bc4a | 253 | (*afp->af_getaddr)(addr, &ifr.ifr_addr); |
40a42b7f TF |
254 | if (ioctl(s, SIOCSIFDSTADDR, (caddr_t)&ifr) < 0) |
255 | Perror("ioctl (SIOCSIFDSTADDR)"); | |
256 | } | |
257 | ||
2c4ef00e SL |
258 | setifflags(vname, value) |
259 | char *vname; | |
62e9bc4a | 260 | short value; |
b3eab9f9 | 261 | { |
62e9bc4a KS |
262 | if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) { |
263 | Perror("ioctl (SIOCGIFFLAGS)"); | |
264 | exit(1); | |
265 | } | |
266 | strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); | |
267 | flags = ifr.ifr_flags; | |
b3eab9f9 SL |
268 | |
269 | if (value < 0) { | |
270 | value = -value; | |
0fd5cf4f | 271 | flags &= ~value; |
b3eab9f9 | 272 | } else |
0fd5cf4f | 273 | flags |= value; |
0fd5cf4f | 274 | ifr.ifr_flags = flags; |
b3eab9f9 | 275 | if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) |
2c4ef00e | 276 | Perror(vname); |
b3eab9f9 SL |
277 | } |
278 | ||
f5f09b9d MK |
279 | setifmetric(val) |
280 | char *val; | |
281 | { | |
282 | strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); | |
283 | ifr.ifr_metric = atoi(val); | |
284 | if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0) | |
285 | perror("ioctl (set metric)"); | |
286 | } | |
287 | ||
288 | #define IFFBITS \ | |
289 | "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\ | |
290 | " | |
291 | ||
62e9bc4a KS |
292 | /* |
293 | * Print the status of the interface. If an address family was | |
294 | * specified, show it and it only; otherwise, show them all. | |
295 | */ | |
b3eab9f9 | 296 | status() |
62e9bc4a KS |
297 | { |
298 | register struct afswtch *p = afp; | |
299 | short af = ifr.ifr_addr.sa_family; | |
300 | ||
f5f09b9d MK |
301 | printf("%s: ", name); |
302 | printb("flags", flags, IFFBITS); | |
303 | if (metric) | |
304 | printf(" metric %d", metric); | |
305 | putchar('\n'); | |
62e9bc4a KS |
306 | if ((p = afp) != NULL) { |
307 | (*p->af_status)(); | |
308 | return; | |
309 | } | |
310 | for (p = afs; p->af_name; p++) { | |
311 | ifr.ifr_addr.sa_family = p->af_af; | |
312 | (*p->af_status)(); | |
313 | } | |
314 | } | |
315 | ||
62e9bc4a | 316 | in_status() |
b3eab9f9 SL |
317 | { |
318 | struct sockaddr_in *sin; | |
62e9bc4a | 319 | char *inet_ntoa(); |
b3eab9f9 | 320 | |
0fd5cf4f MK |
321 | if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) { |
322 | if (errno == EADDRNOTAVAIL) | |
323 | bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); | |
324 | else | |
325 | Perror("ioctl (SIOCGIFADDR)"); | |
326 | } | |
62e9bc4a | 327 | strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); |
b3eab9f9 | 328 | sin = (struct sockaddr_in *)&ifr.ifr_addr; |
5868d993 | 329 | printf("\tinet %s ", inet_ntoa(sin->sin_addr)); |
40a42b7f | 330 | if (flags & IFF_POINTOPOINT) { |
0fd5cf4f MK |
331 | if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { |
332 | if (errno == EADDRNOTAVAIL) | |
333 | bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); | |
334 | else | |
335 | Perror("ioctl (SIOCGIFDSTADDR)"); | |
336 | } | |
62e9bc4a | 337 | strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); |
40a42b7f TF |
338 | sin = (struct sockaddr_in *)&ifr.ifr_dstaddr; |
339 | printf("--> %s ", inet_ntoa(sin->sin_addr)); | |
340 | } | |
0fd5cf4f | 341 | printf("netmask %x ", ntohl(netmask.sin_addr.s_addr)); |
0fd5cf4f | 342 | if (flags & IFF_BROADCAST) { |
0fd5cf4f MK |
343 | if (ioctl(s, SIOCGIFBRDADDR, (caddr_t)&ifr) < 0) { |
344 | if (errno == EADDRNOTAVAIL) | |
345 | return; | |
346 | Perror("ioctl (SIOCGIFADDR)"); | |
347 | } | |
62e9bc4a | 348 | strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); |
0fd5cf4f | 349 | sin = (struct sockaddr_in *)&ifr.ifr_addr; |
f5f09b9d | 350 | printf("broadcast %s", inet_ntoa(sin->sin_addr)); |
0fd5cf4f | 351 | } |
f5f09b9d | 352 | putchar('\n'); |
b3eab9f9 SL |
353 | } |
354 | ||
62e9bc4a KS |
355 | |
356 | xns_status() | |
357 | { | |
358 | struct sockaddr_ns *sns; | |
62e9bc4a KS |
359 | |
360 | close(s); | |
361 | s = socket(AF_NS, SOCK_DGRAM, 0); | |
362 | if (s < 0) { | |
63f46c0f KS |
363 | if (errno == EAFNOSUPPORT) |
364 | return; | |
62e9bc4a KS |
365 | perror("ifconfig: socket"); |
366 | exit(1); | |
367 | } | |
368 | if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) { | |
63f46c0f | 369 | if (errno == EADDRNOTAVAIL || errno==EAFNOSUPPORT) |
62e9bc4a KS |
370 | return; |
371 | Perror("ioctl (SIOCGIFADDR)"); | |
372 | } | |
373 | strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name); | |
374 | sns = (struct sockaddr_ns *)&ifr.ifr_addr; | |
f5f09b9d | 375 | printf("\tns %s ", ns_ntoa(sns->sns_addr)); |
90a22cbc KS |
376 | if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */ |
377 | if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) { | |
378 | if (errno == EADDRNOTAVAIL) | |
379 | bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr)); | |
380 | else | |
381 | Perror("ioctl (SIOCGIFDSTADDR)"); | |
382 | } | |
383 | strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name)); | |
384 | sns = (struct sockaddr_ns *)&ifr.ifr_dstaddr; | |
385 | printf("--> %s ", ns_ntoa(sns->sns_addr)); | |
386 | } | |
62e9bc4a KS |
387 | putchar('\n'); |
388 | } | |
389 | ||
b3eab9f9 SL |
390 | Perror(cmd) |
391 | char *cmd; | |
392 | { | |
393 | extern int errno; | |
394 | ||
395 | fprintf(stderr, "ifconfig: "); | |
396 | switch (errno) { | |
397 | ||
398 | case ENXIO: | |
62e9bc4a | 399 | fprintf(stderr, "%s: no such interface\n", cmd); |
b3eab9f9 SL |
400 | break; |
401 | ||
402 | case EPERM: | |
9f1b5d96 | 403 | fprintf(stderr, "%s: permission denied\n", cmd); |
b3eab9f9 SL |
404 | break; |
405 | ||
406 | default: | |
407 | perror(cmd); | |
408 | } | |
409 | exit(1); | |
410 | } | |
411 | ||
412 | struct in_addr inet_makeaddr(); | |
413 | ||
62e9bc4a | 414 | in_getaddr(s, saddr) |
b3eab9f9 | 415 | char *s; |
62e9bc4a | 416 | struct sockaddr *saddr; |
b3eab9f9 | 417 | { |
62e9bc4a | 418 | register struct sockaddr_in *sin = (struct sockaddr_in *)saddr; |
b3eab9f9 SL |
419 | struct hostent *hp; |
420 | struct netent *np; | |
421 | int val; | |
422 | ||
0fd5cf4f MK |
423 | sin->sin_family = AF_INET; |
424 | val = inet_addr(s); | |
425 | if (val != -1) { | |
426 | sin->sin_addr.s_addr = val; | |
427 | return; | |
428 | } | |
b3eab9f9 SL |
429 | hp = gethostbyname(s); |
430 | if (hp) { | |
431 | sin->sin_family = hp->h_addrtype; | |
432 | bcopy(hp->h_addr, (char *)&sin->sin_addr, hp->h_length); | |
433 | return; | |
434 | } | |
435 | np = getnetbyname(s); | |
436 | if (np) { | |
437 | sin->sin_family = np->n_addrtype; | |
438 | sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY); | |
439 | return; | |
440 | } | |
b3eab9f9 SL |
441 | fprintf(stderr, "%s: bad value\n", s); |
442 | exit(1); | |
443 | } | |
444 | ||
445 | /* | |
446 | * Print a value a la the %b format of the kernel's printf | |
447 | */ | |
448 | printb(s, v, bits) | |
449 | char *s; | |
450 | register char *bits; | |
451 | register unsigned short v; | |
452 | { | |
453 | register int i, any = 0; | |
454 | register char c; | |
455 | ||
456 | if (bits && *bits == 8) | |
457 | printf("%s=%o", s, v); | |
458 | else | |
459 | printf("%s=%x", s, v); | |
460 | bits++; | |
461 | if (bits) { | |
462 | putchar('<'); | |
463 | while (i = *bits++) { | |
464 | if (v & (1 << (i-1))) { | |
465 | if (any) | |
466 | putchar(','); | |
467 | any = 1; | |
468 | for (; (c = *bits) > 32; bits++) | |
469 | putchar(c); | |
470 | } else | |
471 | for (; *bits > 32; bits++) | |
472 | ; | |
473 | } | |
474 | putchar('>'); | |
475 | } | |
476 | } | |
62e9bc4a | 477 | |
62e9bc4a KS |
478 | xns_getaddr(addr, saddr) |
479 | char *addr; | |
480 | struct sockaddr *saddr; | |
481 | { | |
90a22cbc KS |
482 | struct sockaddr_ns *sns = (struct sockaddr_ns *)saddr; |
483 | struct ns_addr ns_addr(); | |
62e9bc4a | 484 | sns->sns_family = AF_NS; |
90a22cbc | 485 | sns->sns_addr = ns_addr(addr); |
62e9bc4a | 486 | } |