1 /* $OpenBSD: slaacctl.c,v 1.28 2024/11/21 13:38:15 claudio Exp $ */
2
3 /*
4 * Copyright (c) 2005 Claudio Jeker <claudio@openbsd.org>
5 * Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
6 * Copyright (c) 2003 Henning Brauer <henning@openbsd.org>
7 *
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 */
20
21 #include <sys/types.h>
22 #include <sys/queue.h>
23 #include <sys/socket.h>
24 #include <sys/un.h>
25 #include <arpa/inet.h>
26
27 #include <net/if.h>
28 #include <net/if_media.h>
29 #include <net/if_types.h>
30
31 #include <netinet/in.h>
32 #include <netinet/if_ether.h>
33 #include <netinet6/nd6.h>
34
35 #include <err.h>
36 #include <errno.h>
37 #include <event.h>
38 #include <imsg.h>
39 #include <netdb.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <unistd.h>
44
45 #include "slaacd.h"
46 #include "frontend.h"
47 #include "parser.h"
48
49 __dead void usage(void);
50 int show_interface_msg(struct imsg *);
51
52 struct imsgbuf *ibuf;
53
54 __dead void
usage(void)55 usage(void)
56 {
57 extern char *__progname;
58
59 fprintf(stderr, "usage: %s [-s socket] command [argument ...]\n",
60 __progname);
61 exit(1);
62 }
63
64 int
main(int argc,char * argv[])65 main(int argc, char *argv[])
66 {
67 struct sockaddr_un sun;
68 struct parse_result *res;
69 struct imsg imsg;
70 int ctl_sock;
71 int done = 0;
72 int n, verbose = 0;
73 int ch;
74 char *sockname;
75
76 sockname = _PATH_SLAACD_SOCKET;
77 while ((ch = getopt(argc, argv, "s:")) != -1) {
78 switch (ch) {
79 case 's':
80 sockname = optarg;
81 break;
82 default:
83 usage();
84 }
85 }
86 argc -= optind;
87 argv += optind;
88
89 if (pledge("stdio unix", NULL) == -1)
90 err(1, "pledge");
91
92 /* Parse command line. */
93 if ((res = parse(argc, argv)) == NULL)
94 exit(1);
95
96 /* Connect to control socket. */
97 if ((ctl_sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
98 err(1, "socket");
99
100 memset(&sun, 0, sizeof(sun));
101 sun.sun_family = AF_UNIX;
102 strlcpy(sun.sun_path, sockname, sizeof(sun.sun_path));
103
104 if (connect(ctl_sock, (struct sockaddr *)&sun, sizeof(sun)) == -1)
105 err(1, "connect: %s", sockname);
106
107 if (pledge("stdio", NULL) == -1)
108 err(1, "pledge");
109
110 if ((ibuf = malloc(sizeof(struct imsgbuf))) == NULL)
111 err(1, NULL);
112 if (imsgbuf_init(ibuf, ctl_sock) == -1)
113 err(1, NULL);
114 done = 0;
115
116 /* Process user request. */
117 switch (res->action) {
118 case LOG_VERBOSE:
119 verbose = 1;
120 /* FALLTHROUGH */
121 case LOG_BRIEF:
122 imsg_compose(ibuf, IMSG_CTL_LOG_VERBOSE, 0, 0, -1,
123 &verbose, sizeof(verbose));
124 printf("logging request sent.\n");
125 done = 1;
126 break;
127 case SHOW_INTERFACE:
128 imsg_compose(ibuf, IMSG_CTL_SHOW_INTERFACE_INFO, 0, 0, -1,
129 &res->if_index, sizeof(res->if_index));
130 break;
131 case SEND_SOLICITATION:
132 imsg_compose(ibuf, IMSG_CTL_SEND_SOLICITATION, 0, 0, -1,
133 &res->if_index, sizeof(res->if_index));
134 done = 1;
135 break;
136 default:
137 usage();
138 }
139
140 if (imsgbuf_flush(ibuf) == -1)
141 err(1, "write error");
142
143 while (!done) {
144 if ((n = imsgbuf_read(ibuf)) == -1)
145 err(1, "read error");
146 if (n == 0)
147 errx(1, "pipe closed");
148
149 while (!done) {
150 if ((n = imsg_get(ibuf, &imsg)) == -1)
151 errx(1, "imsg_get error");
152 if (n == 0)
153 break;
154
155 switch (res->action) {
156 case SHOW_INTERFACE:
157 done = show_interface_msg(&imsg);
158 break;
159 default:
160 break;
161 }
162
163 imsg_free(&imsg);
164 }
165 }
166 close(ctl_sock);
167 free(ibuf);
168
169 return (0);
170 }
171
172 int
show_interface_msg(struct imsg * imsg)173 show_interface_msg(struct imsg *imsg)
174 {
175 static int if_count = 0;
176 struct ctl_engine_info *cei;
177 struct ctl_engine_info_ra *cei_ra;
178 struct ctl_engine_info_ra_prefix *cei_ra_prefix;
179 struct ctl_engine_info_ra_rdns *cei_ra_rdns;
180 struct ctl_engine_info_address_proposal *cei_addr_proposal;
181 struct ctl_engine_info_dfr_proposal *cei_dfr_proposal;
182 struct ctl_engine_info_rdns_proposal *cei_rdns_proposal;
183 struct tm *t;
184 struct timespec now, diff;
185 int i;
186 char buf[IF_NAMESIZE], *bufp;
187 char hbuf[NI_MAXHOST], whenbuf[255];
188 char ntopbuf[INET6_ADDRSTRLEN];
189
190 switch (imsg->hdr.type) {
191 case IMSG_CTL_SHOW_INTERFACE_INFO:
192 cei = imsg->data;
193
194 if (if_count++ > 0)
195 printf("\n");
196
197 bufp = if_indextoname(cei->if_index, buf);
198 printf("%s:\n", bufp != NULL ? bufp : "unknown");
199 printf("\t index: %3u ", cei->if_index);
200 printf("running: %3s ", cei->running ? "yes" : "no");
201 printf("temporary: %3s\n", cei->temporary ? "yes" :
202 "no");
203 printf("\tlladdr: %s\n", ether_ntoa(&cei->hw_address));
204 if (getnameinfo((struct sockaddr *)&cei->ll_address,
205 cei->ll_address.sin6_len, hbuf, sizeof(hbuf), NULL, 0,
206 NI_NUMERICHOST | NI_NUMERICSERV))
207 err(1, "cannot get link local address");
208 printf("\t inet6: %s\n", hbuf);
209 break;
210 case IMSG_CTL_SHOW_INTERFACE_INFO_RA:
211 cei_ra = imsg->data;
212
213 if (getnameinfo((struct sockaddr *)&cei_ra->from,
214 cei_ra->from.sin6_len, hbuf, sizeof(hbuf), NULL, 0,
215 NI_NUMERICHOST | NI_NUMERICSERV))
216 err(1, "cannot get router IP");
217
218 if (clock_gettime(CLOCK_MONOTONIC, &now))
219 err(1, "clock_gettime");
220
221 timespecsub(&now, &cei_ra->uptime, &diff);
222
223 t = localtime(&cei_ra->when.tv_sec);
224 strftime(whenbuf, sizeof(whenbuf), "%F %T", t);
225 printf("\tRouter Advertisement from %s\n", hbuf);
226 printf("\t\treceived: %s; %llds ago\n", whenbuf, diff.tv_sec);
227 printf("\t\tCur Hop Limit: %3u, M: %d, O: %d, Router Lifetime:"
228 " %5us\n", cei_ra->curhoplimit, cei_ra->managed ? 1: 0,
229 cei_ra->other ? 1 : 0, cei_ra->router_lifetime);
230 printf("\t\tDefault Router Preference: %s\n", cei_ra->rpref);
231 printf("\t\tReachable Time: %9ums, Retrans Timer: %9ums\n",
232 cei_ra->reachable_time, cei_ra->retrans_time);
233 if (cei_ra->mtu)
234 printf("\t\tMTU: %u bytes\n", cei_ra->mtu);
235 break;
236 case IMSG_CTL_SHOW_INTERFACE_INFO_RA_PREFIX:
237 cei_ra_prefix = imsg->data;
238 printf("\t\tprefix: %s/%u\n", inet_ntop(AF_INET6,
239 &cei_ra_prefix->prefix, ntopbuf, INET6_ADDRSTRLEN),
240 cei_ra_prefix->prefix_len);
241 printf("\t\t\tOn-link: %d, Autonomous address-configuration: %d"
242 "\n", cei_ra_prefix->onlink ? 1 : 0,
243 cei_ra_prefix->autonomous ? 1 : 0);
244 if (cei_ra_prefix->vltime == ND6_INFINITE_LIFETIME)
245 printf("\t\t\tvltime: %10s, ", "infinity");
246 else
247 printf("\t\t\tvltime: %10u, ", cei_ra_prefix->vltime);
248 if (cei_ra_prefix->pltime == ND6_INFINITE_LIFETIME)
249 printf("pltime: %10s\n", "infinity");
250 else
251 printf("pltime: %10u\n", cei_ra_prefix->pltime);
252 break;
253 case IMSG_CTL_SHOW_INTERFACE_INFO_RA_RDNS:
254 cei_ra_rdns = imsg->data;
255 printf("\t\trdns: %s, lifetime: %u\n", inet_ntop(AF_INET6,
256 &cei_ra_rdns->rdns, ntopbuf, INET6_ADDRSTRLEN),
257 cei_ra_rdns->lifetime);
258 break;
259 case IMSG_CTL_SHOW_INTERFACE_INFO_ADDR_PROPOSALS:
260 printf("\tAddress proposals\n");
261 break;
262 case IMSG_CTL_SHOW_INTERFACE_INFO_ADDR_PROPOSAL:
263 cei_addr_proposal = imsg->data;
264
265 if (getnameinfo((struct sockaddr *)&cei_addr_proposal->addr,
266 cei_addr_proposal->addr.sin6_len, hbuf, sizeof(hbuf),
267 NULL, 0, NI_NUMERICHOST | NI_NUMERICSERV))
268 err(1, "cannot get proposal IP");
269
270 printf("\t\tid: %4lld, state: %15s, temporary: %s\n",
271 cei_addr_proposal->id, cei_addr_proposal->state,
272 cei_addr_proposal->temporary ? "y" : "n");
273
274 if (clock_gettime(CLOCK_MONOTONIC, &now))
275 err(1, "clock_gettime");
276
277 timespecsub(&now, &cei_addr_proposal->uptime, &diff);
278
279 if (cei_addr_proposal->vltime == ND6_INFINITE_LIFETIME)
280 printf("\t\tvltime: %10s, ", "infinity");
281 else
282 printf("\t\tvltime: %10u, ", cei_addr_proposal->vltime);
283 if (cei_addr_proposal->pltime == ND6_INFINITE_LIFETIME)
284 printf("pltime: %10s", "infinity");
285 else
286 printf("pltime: %10u", cei_addr_proposal->pltime);
287 if (cei_addr_proposal->next_timeout != 0)
288 printf(", timeout: %10llds\n",
289 cei_addr_proposal->next_timeout - diff.tv_sec);
290 else
291 printf("\n");
292
293 t = localtime(&cei_addr_proposal->when.tv_sec);
294 strftime(whenbuf, sizeof(whenbuf), "%F %T", t);
295 printf("\t\tupdated: %s; %llds ago\n", whenbuf, diff.tv_sec);
296 printf("\t\t%s, %s/%u\n", hbuf, inet_ntop(AF_INET6,
297 &cei_addr_proposal->prefix, ntopbuf, INET6_ADDRSTRLEN),
298 cei_addr_proposal->prefix_len);
299 break;
300 case IMSG_CTL_SHOW_INTERFACE_INFO_DFR_PROPOSALS:
301 printf("\tDefault router proposals\n");
302 break;
303 case IMSG_CTL_SHOW_INTERFACE_INFO_DFR_PROPOSAL:
304 cei_dfr_proposal = imsg->data;
305
306 if (getnameinfo((struct sockaddr *)&cei_dfr_proposal->addr,
307 cei_dfr_proposal->addr.sin6_len, hbuf, sizeof(hbuf),
308 NULL, 0, NI_NUMERICHOST | NI_NUMERICSERV))
309 err(1, "cannot get router IP");
310
311 printf("\t\tid: %4lld, state: %15s\n",
312 cei_dfr_proposal->id, cei_dfr_proposal->state);
313 printf("\t\trouter: %s\n", hbuf);
314 printf("\t\trouter lifetime: %10u\n",
315 cei_dfr_proposal->router_lifetime);
316 printf("\t\tPreference: %s\n", cei_dfr_proposal->rpref);
317 if (clock_gettime(CLOCK_MONOTONIC, &now))
318 err(1, "clock_gettime");
319
320 timespecsub(&now, &cei_dfr_proposal->uptime, &diff);
321
322 t = localtime(&cei_dfr_proposal->when.tv_sec);
323 strftime(whenbuf, sizeof(whenbuf), "%F %T", t);
324 printf("\t\tupdated: %s; %llds ago", whenbuf, diff.tv_sec);
325 if (cei_dfr_proposal->next_timeout != 0)
326 printf(", timeout: %10llds\n",
327 cei_dfr_proposal->next_timeout - diff.tv_sec);
328 else
329 printf("\n");
330
331 break;
332 case IMSG_CTL_SHOW_INTERFACE_INFO_RDNS_PROPOSALS:
333 printf("\trDNS proposals\n");
334 break;
335 case IMSG_CTL_SHOW_INTERFACE_INFO_RDNS_PROPOSAL:
336 cei_rdns_proposal = imsg->data;
337
338 if (getnameinfo((struct sockaddr *)&cei_rdns_proposal->from,
339 cei_rdns_proposal->from.sin6_len, hbuf, sizeof(hbuf),
340 NULL, 0, NI_NUMERICHOST | NI_NUMERICSERV))
341 err(1, "cannot get router IP");
342
343 printf("\t\tid: %4lld, state: %15s\n",
344 cei_rdns_proposal->id, cei_rdns_proposal->state);
345 printf("\t\trouter: %s\n", hbuf);
346 printf("\t\trdns lifetime: %10u\n",
347 cei_rdns_proposal->rdns_lifetime);
348 printf("\t\trdns:\n");
349 for (i = 0; i < cei_rdns_proposal->rdns_count; i++) {
350 printf("\t\t\t%s\n", inet_ntop(AF_INET6,
351 &cei_rdns_proposal->rdns[i], ntopbuf,
352 INET6_ADDRSTRLEN));
353 }
354
355 if (clock_gettime(CLOCK_MONOTONIC, &now))
356 err(1, "clock_gettime");
357
358 timespecsub(&now, &cei_rdns_proposal->uptime, &diff);
359
360 t = localtime(&cei_rdns_proposal->when.tv_sec);
361 strftime(whenbuf, sizeof(whenbuf), "%F %T", t);
362 printf("\t\tupdated: %s; %llds ago", whenbuf, diff.tv_sec);
363 if (cei_rdns_proposal->next_timeout != 0)
364 printf(", timeout: %10llds\n",
365 cei_rdns_proposal->next_timeout - diff.tv_sec);
366 else
367 printf("\n");
368
369 break;
370 case IMSG_CTL_END:
371 return (1);
372 default:
373 break;
374 }
375
376 return (0);
377 }
378