410c8acf |
1 | /* -*-c-*- |
2 | * |
2d752320 |
3 | * $Id$ |
410c8acf |
4 | * |
5 | * Admin interface for configuration |
6 | * |
7 | * (c) 2001 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Trivial IP Encryption (TrIPE). |
13 | * |
14 | * TrIPE is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * TrIPE is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with TrIPE; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
410c8acf |
29 | /*----- Header files ------------------------------------------------------*/ |
30 | |
31 | #include "tripe.h" |
32 | |
33 | /*----- Global variables --------------------------------------------------*/ |
34 | |
35 | #ifndef NTRACE |
36 | |
37 | const trace_opt tr_opts[] = { |
38 | { 't', T_TUNNEL, "tunnel events" }, |
39 | { 'r', T_PEER, "peer events" }, |
40 | { 'a', T_ADMIN, "admin interface" }, |
41 | { 'p', T_PACKET, "packet contents" }, |
42 | { 'c', T_CRYPTO, "crypto details" }, |
43 | { 's', T_KEYSET, "symmetric keyset management" }, |
44 | { 'x', T_KEYEXCH, "key exchange" }, |
45 | { 'm', T_KEYMGMT, "key management" }, |
46 | { 'A', T_ALL, "all of the above" }, |
47 | { 0, 0, 0 } |
48 | }; |
49 | |
50 | unsigned tr_flags = 0; |
51 | #endif |
52 | |
3cdc3f3a |
53 | static const trace_opt w_opts[] = { |
54 | { 't', AF_TRACE, "trace messages" }, |
55 | { 'n', AF_NOTE, "asynchronous notifications" }, |
56 | { 'w', AF_WARN, "warnings" }, |
57 | { 'A', AF_ALLMSGS, "all of the above" }, |
58 | { 0, 0, 0 } |
59 | }; |
60 | |
410c8acf |
61 | /*----- Static variables --------------------------------------------------*/ |
62 | |
63 | static admin *admins; |
64 | static sel_file sock; |
65 | static const char *sockname; |
66 | static unsigned flags = 0; |
67 | static admin *a_stdin = 0; |
68 | static sig s_term, s_int, s_hup; |
69 | |
70 | #define F_DAEMON 1u |
71 | #define F_INIT 2u |
72 | |
73 | #define T_RESOLVE SEC(30) |
74 | |
fd3cf232 |
75 | static void a_destroy(admin */*a*/); |
76 | static void a_lock(admin */*a*/); |
77 | static void a_unlock(admin */*a*/); |
78 | |
79 | /*----- Output functions --------------------------------------------------*/ |
80 | |
81 | /* --- @trywrite@ --- * |
82 | * |
83 | * Arguments: @admin *a@ = pointer to an admin block |
84 | * @const char *p@ = pointer to buffer to write |
85 | * @size_t sz@ = size of data to write |
86 | * |
87 | * Returns: The number of bytes written, or less than zero on error. |
88 | * |
89 | * Use: Attempts to write data to a client. |
90 | */ |
91 | |
92 | static ssize_t trywrite(admin *a, const char *p, size_t sz) |
93 | { |
94 | ssize_t n, done = 0; |
95 | |
96 | again: |
97 | if (!sz) |
98 | return (done); |
99 | n = write(a->w.fd, p, sz); |
100 | if (n > 0) { |
101 | done += n; |
102 | p += n; |
103 | sz -= n; |
104 | goto again; |
105 | } |
106 | if (n < 0) { |
107 | if (errno == EINTR) |
108 | goto again; |
109 | if (errno != EAGAIN && errno != EWOULDBLOCK) { |
110 | a_destroy(a); |
3cdc3f3a |
111 | a_warn("ADMIN client-read-error -- %s", strerror(errno)); |
fd3cf232 |
112 | return (-1); |
113 | } |
114 | } |
115 | return (done); |
116 | } |
117 | |
118 | /* --- @dosend@ --- * |
119 | * |
120 | * Arguemnts: @admin *a@ = pointer to an admin block |
121 | * @const char *p@ = pointer to buffer to write |
122 | * @size_t sz@ = size of data to write |
123 | * |
124 | * Returns: --- |
125 | * |
126 | * Use: Sends data to an admin client. |
127 | */ |
128 | |
129 | static void dosend(admin *a, const char *p, size_t sz) |
130 | { |
131 | ssize_t n; |
132 | obuf *o; |
133 | |
134 | if (a->f & AF_DEAD) |
135 | return; |
136 | |
137 | /* --- Try to send the data immediately --- */ |
138 | |
139 | if (!a->o_head) { |
140 | if ((n = trywrite(a, p, sz)) < 0) |
141 | return; |
142 | p += n; |
143 | sz -= n; |
144 | if (!sz) |
145 | return; |
146 | } |
147 | |
148 | /* --- Fill buffers with the data until it's all gone --- */ |
149 | |
150 | o = a->o_tail; |
151 | if (!o) |
152 | sel_addfile(&a->w); |
153 | else if (o->p_in < o->buf + OBUFSZ) |
154 | goto noalloc; |
155 | |
156 | do { |
157 | o = xmalloc(sizeof(obuf)); |
158 | o->next = 0; |
159 | o->p_in = o->p_out = o->buf; |
160 | if (a->o_tail) |
161 | a->o_tail->next = o; |
162 | else |
163 | a->o_head = o; |
164 | a->o_tail = o; |
165 | |
166 | noalloc: |
167 | n = o->buf + OBUFSZ - o->p_in; |
168 | if (n > sz) |
169 | n = sz; |
170 | memcpy(o->p_in, p, n); |
171 | o->p_in += n; |
172 | p += n; |
173 | sz -= n; |
174 | } while (sz); |
175 | } |
176 | |
177 | /* --- @a_flush@ --- * |
178 | * |
179 | * Arguments: @int fd@ = file descriptor |
180 | * @unsigned mode@ = what's happening |
181 | * @void *v@ = pointer to my admin block |
182 | * |
183 | * Returns: --- |
184 | * |
185 | * Use: Flushes buffers when a client is ready to read again. |
186 | */ |
187 | |
188 | static void a_flush(int fd, unsigned mode, void *v) |
189 | { |
190 | admin *a = v; |
191 | obuf *o, *oo; |
192 | ssize_t n; |
193 | |
194 | o = a->o_head; |
195 | while (o) { |
196 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) |
197 | return; |
198 | o->p_out += n; |
199 | if (o->p_in < o->p_out) |
200 | break; |
201 | oo = o; |
202 | o = o->next; |
203 | xfree(oo); |
204 | } |
205 | a->o_head = o; |
206 | if (!o) { |
207 | a->o_tail = 0; |
208 | sel_rmfile(&a->w); |
209 | } |
210 | } |
211 | |
410c8acf |
212 | /*----- Utility functions -------------------------------------------------*/ |
213 | |
3cdc3f3a |
214 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf |
215 | * |
216 | * Arguments: @admin *a@ = admin connection to write to |
3cdc3f3a |
217 | * @const char *tag@ = tag prefix string, or null |
410c8acf |
218 | * @const char *fmt@ = pointer to format string |
3cdc3f3a |
219 | * @va_list ap@ = arguments in list |
410c8acf |
220 | * @...@ = other arguments |
221 | * |
222 | * Returns: --- |
223 | * |
224 | * Use: Sends a message to an admin connection. |
225 | */ |
226 | |
3cdc3f3a |
227 | static void a_vwrite(admin *a, const char *tag, const char *fmt, va_list ap) |
410c8acf |
228 | { |
410c8acf |
229 | dstr d = DSTR_INIT; |
3cdc3f3a |
230 | if (tag) { |
231 | dstr_puts(&d, tag); |
232 | if (fmt) |
233 | dstr_putc(&d, ' '); |
234 | } |
235 | if (fmt) |
236 | dstr_vputf(&d, fmt, &ap); |
237 | dstr_putc(&d, '\n'); |
238 | dosend(a, d.buf, d.len); |
239 | dstr_destroy(&d); |
240 | } |
241 | |
242 | static void a_write(admin *a, const char *tag, const char *fmt, ...) |
243 | { |
244 | va_list ap; |
410c8acf |
245 | va_start(ap, fmt); |
3cdc3f3a |
246 | a_vwrite(a, tag, fmt, ap); |
410c8acf |
247 | va_end(ap); |
3cdc3f3a |
248 | } |
249 | |
250 | /* --- @a_ok@, @a_info@, @a_fail@ --- * |
251 | * |
252 | * Arguments: @admin *a@ = connection |
253 | * @const char *fmt@ = format string |
254 | * @...@ = other arguments |
255 | * |
256 | * Returns: --- |
257 | * |
258 | * Use: Convenience functions for @a_write@. |
259 | */ |
260 | |
261 | static void a_ok(admin *a) { a_write(a, "OK", 0); } |
262 | |
263 | static void a_info(admin *a, const char *fmt, ...) |
264 | { |
265 | va_list ap; |
266 | va_start(ap, fmt); |
267 | a_vwrite(a, "INFO", fmt, ap); |
268 | va_end(ap); |
269 | } |
270 | |
271 | static void a_fail(admin *a, const char *fmt, ...) |
272 | { |
273 | va_list ap; |
274 | va_start(ap, fmt); |
275 | a_vwrite(a, "FAIL", fmt, ap); |
276 | va_end(ap); |
277 | } |
278 | |
279 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * |
280 | * |
281 | * Arguments: @unsigned f_and, f_eq@ = filter for connections |
282 | * @const char *tag@ = tag prefix string |
283 | * @const char *fmt@ = pointer to format string |
284 | @ @const char *p@ = pointer to raw string |
285 | * @size_t sz@ = size of raw string |
286 | * @va_list ap@ = arguments in list |
287 | * @...@ = other arguments |
288 | * |
289 | * Returns: --- |
290 | * |
291 | * Use: Write a message to all admin connections matched by the given |
292 | * filter. |
293 | */ |
294 | |
295 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *tag, |
296 | const char *p, size_t sz) |
297 | { |
298 | admin *a, *aa; |
299 | dstr d = DSTR_INIT; |
300 | |
301 | if (!(flags & F_INIT)) |
302 | return; |
303 | if (tag) { |
304 | dstr_puts(&d, tag); |
305 | if (p) |
306 | dstr_putc(&d, ' '); |
307 | } |
308 | if (p) |
309 | dstr_putm(&d, p, sz); |
310 | dstr_putc(&d, '\n'); |
311 | p = d.buf; |
312 | sz = d.len; |
313 | for (a = admins; a; a = aa) { |
314 | aa = a->next; |
315 | if ((a->f & f_and) == f_eq) |
316 | dosend(a, d.buf, d.len); |
317 | } |
410c8acf |
318 | dstr_destroy(&d); |
319 | } |
320 | |
3cdc3f3a |
321 | static void a_valert(unsigned f_and, unsigned f_eq, const char *tag, |
322 | const char *fmt, va_list ap) |
323 | { |
324 | dstr d = DSTR_INIT; |
325 | |
326 | if (!(flags & F_INIT)) |
327 | return; |
328 | if (fmt) |
329 | dstr_vputf(&d, fmt, &ap); |
330 | a_rawalert(f_and, f_eq, tag, fmt ? d.buf : 0, fmt ? d.len : 0); |
331 | dstr_destroy(&d); |
332 | } |
333 | |
334 | #if 0 /*unused*/ |
335 | static void a_alert(unsigned f_and, unsigned f_eq, const char *tag, |
336 | const char *fmt, ...) |
337 | { |
338 | va_list ap; |
339 | va_start(ap, fmt); |
340 | a_valert(f_and, f_eq, tag, fmt, ap); |
341 | va_end(ap); |
342 | } |
343 | #endif |
344 | |
410c8acf |
345 | /* --- @a_warn@ --- * |
346 | * |
347 | * Arguments: @const char *fmt@ = pointer to format string |
348 | * @...@ = other arguments |
349 | * |
350 | * Returns: --- |
351 | * |
352 | * Use: Informs all admin connections of a warning. |
353 | */ |
354 | |
355 | void a_warn(const char *fmt, ...) |
356 | { |
357 | va_list ap; |
410c8acf |
358 | |
410c8acf |
359 | va_start(ap, fmt); |
3cdc3f3a |
360 | if (flags & F_INIT) |
361 | a_valert(0, 0, "WARN", fmt, ap); |
410c8acf |
362 | else { |
3cdc3f3a |
363 | fprintf(stderr, "%s: ", QUIS); |
364 | vfprintf(stderr, fmt, ap); |
365 | fputc('\n', stderr); |
410c8acf |
366 | } |
3cdc3f3a |
367 | va_end(ap); |
410c8acf |
368 | } |
369 | |
370 | /* --- @a_trace@ --- * |
371 | * |
372 | * Arguments: @const char *p@ = pointer to a buffer |
373 | * @size_t sz@ = size of the buffer |
374 | * @void *v@ = uninteresting pointer |
375 | * |
376 | * Returns: --- |
377 | * |
3cdc3f3a |
378 | * Use: Custom trace output handler. Sends trace messages to |
379 | * interested admin connections. |
410c8acf |
380 | */ |
381 | |
382 | #ifndef NTRACE |
383 | static void a_trace(const char *p, size_t sz, void *v) |
384 | { |
3cdc3f3a |
385 | a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); |
410c8acf |
386 | } |
387 | #endif |
388 | |
3cdc3f3a |
389 | /* --- @a_notify@ --- * |
390 | * |
391 | * Arguments: @const char *fmt@ = pointer to format string |
392 | * @...@ = other arguments |
393 | * |
394 | * Returns: --- |
395 | * |
396 | * Use: Sends a notification to interested admin connections. |
397 | */ |
398 | |
399 | void a_notify(const char *fmt, ...) |
400 | { |
401 | va_list ap; |
402 | |
403 | va_start(ap, fmt); |
404 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); |
405 | va_end(ap); |
406 | } |
407 | |
410c8acf |
408 | /* --- @a_quit@ --- * |
409 | * |
410 | * Arguments: --- |
411 | * |
412 | * Returns: --- |
413 | * |
414 | * Use: Shuts things down nicely. |
415 | */ |
416 | |
417 | void a_quit(void) |
418 | { |
42da2a58 |
419 | peer *p; |
420 | |
421 | while ((p = p_first()) != 0) |
422 | p_destroy(p); |
410c8acf |
423 | close(sock.fd); |
424 | unlink(sockname); |
425 | exit(0); |
426 | } |
427 | |
428 | /* --- @a_sigdie@ --- * |
429 | * |
430 | * Arguments: @int sig@ = signal number |
431 | * @void *v@ = an uninteresting argument |
432 | * |
433 | * Returns: --- |
434 | * |
435 | * Use Shuts down on receipt of a fatal signal. |
436 | */ |
437 | |
438 | static void a_sigdie(int sig, void *v) |
439 | { |
440 | char *p; |
441 | char buf[20]; |
442 | |
443 | switch (sig) { |
444 | case SIGTERM: p = "SIGTERM"; break; |
445 | case SIGINT: p = "SIGINT"; break; |
446 | default: |
3cdc3f3a |
447 | sprintf(buf, "%i", sig); |
410c8acf |
448 | p = buf; |
449 | break; |
450 | } |
3cdc3f3a |
451 | a_warn("SERVER quit signal %s", p); |
410c8acf |
452 | a_quit(); |
453 | } |
454 | |
455 | /* --- @a_sighup@ --- * |
456 | * |
457 | * Arguments: @int sig@ = signal number |
458 | * @void *v@ = an uninteresting argument |
459 | * |
460 | * Returns: --- |
461 | * |
462 | * Use Logs a message about SIGHUP not being useful. |
463 | */ |
464 | |
465 | static void a_sighup(int sig, void *v) |
466 | { |
3cdc3f3a |
467 | a_warn("SERVER ignore signal SIGHUP"); |
410c8acf |
468 | } |
469 | |
470 | /*----- Adding peers ------------------------------------------------------*/ |
471 | |
472 | /* --- @a_resolve@ --- * |
473 | * |
474 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
475 | * @void *v@ = pointer to admin block |
476 | * |
477 | * Returns: --- |
478 | * |
479 | * Use: Handles a completed name resolution. |
480 | */ |
481 | |
482 | static void a_resolve(struct hostent *h, void *v) |
483 | { |
484 | admin *a = v; |
fd3cf232 |
485 | |
486 | a_lock(a); |
410c8acf |
487 | T( trace(T_ADMIN, "admin: %u resolved", a->seq); ) |
8d0c7a83 |
488 | TIMER; |
410c8acf |
489 | sel_rmtimer(&a->t); |
490 | if (!h) |
3cdc3f3a |
491 | a_fail(a, "resolve-error %s", a->paddr); |
410c8acf |
492 | else if (p_find(a->pname)) |
3cdc3f3a |
493 | a_fail(a, "peer-exists %s", a->pname); |
410c8acf |
494 | else { |
495 | memcpy(&a->peer.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); |
42da2a58 |
496 | if (!p_create(a->pname, a->tops, &a->peer.sa, a->sasz)) |
2ec489f7 |
497 | a_fail(a, "peer-create-fail %s", a->pname); |
410c8acf |
498 | else |
3cdc3f3a |
499 | a_ok(a); |
410c8acf |
500 | } |
501 | xfree(a->pname); |
502 | xfree(a->paddr); |
503 | a->pname = 0; |
504 | selbuf_enable(&a->b); |
fd3cf232 |
505 | a_unlock(a); |
410c8acf |
506 | } |
507 | |
508 | /* --- @a_timer@ --- * |
509 | * |
510 | * Arguments: @struct timeval *tv@ = timer |
511 | * @void *v@ = pointer to admin block |
512 | * |
513 | * Returns: --- |
514 | * |
515 | * Use: Times out a resolver. |
516 | */ |
517 | |
518 | static void a_timer(struct timeval *tv, void *v) |
519 | { |
520 | admin *a = v; |
fd3cf232 |
521 | |
522 | a_lock(a); |
410c8acf |
523 | T( trace(T_ADMIN, "admin: %u resolver timeout", a->seq); ) |
524 | bres_abort(&a->r); |
3cdc3f3a |
525 | a_fail(a, "resolver-timeout %s\n", a->paddr); |
410c8acf |
526 | xfree(a->pname); |
527 | xfree(a->paddr); |
528 | a->pname = 0; |
529 | selbuf_enable(&a->b); |
fd3cf232 |
530 | a_unlock(a); |
410c8acf |
531 | } |
532 | |
533 | /* --- @acmd_add@ --- * |
534 | * |
535 | * Arguments: @admin *a@ = connection which requested the addition |
536 | * @unsigned ac@ = argument count |
537 | * @char *av[]@ = pointer to the argument list |
538 | * |
539 | * Returns: --- |
540 | * |
541 | * Use: Adds a new peer. |
542 | */ |
543 | |
544 | static void acmd_add(admin *a, unsigned ac, char *av[]) |
545 | { |
546 | unsigned long pt; |
547 | struct timeval tv; |
42da2a58 |
548 | unsigned i, j; |
549 | const tunnel_ops *tops = tun_default; |
410c8acf |
550 | char *p; |
551 | |
552 | /* --- Make sure someone's not got there already --- */ |
553 | |
554 | if (p_find(av[0])) { |
3cdc3f3a |
555 | a_fail(a, "peer-exists %s", av[0]); |
410c8acf |
556 | return; |
557 | } |
558 | |
42da2a58 |
559 | /* --- Parse options --- */ |
560 | |
561 | i = 1; |
562 | for (;;) { |
563 | if (!av[i]) |
564 | goto bad_syntax; |
565 | if (mystrieq(av[i], "-tunnel")) { |
566 | i++; |
567 | if (!av[i]) |
568 | goto bad_syntax; |
569 | for (j = 0;; j++) { |
570 | if (!tunnels[j]) { |
571 | a_fail(a, "unknown-tunnel %s", av[i]); |
572 | return; |
573 | } |
574 | if (mystrieq(av[i], tunnels[j]->name)) { |
575 | tops = tunnels[j]; |
576 | break; |
577 | } |
578 | } |
579 | i++; |
580 | } else if (mystrieq(av[i], "--")) { |
581 | i++; |
582 | break; |
583 | } else |
584 | break; |
585 | } |
586 | |
410c8acf |
587 | /* --- Fill in the easy bits of address --- */ |
588 | |
589 | BURN(a->peer); |
3cdc3f3a |
590 | if (mystrieq(av[i], "inet")) i++; |
591 | if (ac - i != 2) { |
42da2a58 |
592 | a_fail(a, "bad-syntax -- add PEER [-tunnel TUN] [inet] ADDRESS PORT"); |
3cdc3f3a |
593 | return; |
594 | } |
410c8acf |
595 | a->peer.sin.sin_family = AF_INET; |
596 | a->sasz = sizeof(a->peer.sin); |
3cdc3f3a |
597 | pt = strtoul(av[i + 1], &p, 0); |
410c8acf |
598 | if (*p) { |
3cdc3f3a |
599 | struct servent *s = getservbyname(av[i + 1], "udp"); |
410c8acf |
600 | if (!s) { |
3cdc3f3a |
601 | a_fail(a, "unknown-service %s", av[i + 1]); |
410c8acf |
602 | return; |
603 | } |
604 | pt = ntohs(s->s_port); |
605 | } |
606 | if (pt == 0 || pt >= 65536) { |
3cdc3f3a |
607 | a_fail(a, "invalid-port %lu", pt); |
410c8acf |
608 | return; |
609 | } |
610 | a->peer.sin.sin_port = htons(pt); |
611 | |
612 | /* --- If the name is numeric, do it the easy way --- */ |
613 | |
3cdc3f3a |
614 | if (inet_aton(av[i], &a->peer.sin.sin_addr)) { |
42da2a58 |
615 | if (!p_create(av[0], tops, &a->peer.sa, a->sasz)) |
3cdc3f3a |
616 | a_fail(a, "peer-create-fail %s", a->pname); |
410c8acf |
617 | else |
3cdc3f3a |
618 | a_ok(a); |
410c8acf |
619 | return; |
620 | } |
621 | |
622 | /* --- Store everything for later and crank up the resolver --- * |
623 | * |
624 | * We disable the line buffer until the resolver completes (or times out). |
625 | * This prevents other commands on the same connection (though the rest of |
626 | * the system continues regardless), but makes life simpler for the client. |
627 | */ |
628 | |
629 | a->pname = xstrdup(av[0]); |
3cdc3f3a |
630 | a->paddr = xstrdup(av[i]); |
42da2a58 |
631 | a->tops = tops; |
410c8acf |
632 | selbuf_disable(&a->b); |
633 | gettimeofday(&tv, 0); |
634 | tv.tv_sec += T_RESOLVE; |
635 | sel_addtimer(&sel, &a->t, &tv, a_timer, a); |
636 | bres_byname(&a->r, a->paddr, a_resolve, a); |
637 | T( trace(T_ADMIN, "admin: %u resolving hostname `%s'", |
638 | a->seq, a->paddr); ) |
42da2a58 |
639 | return; |
640 | |
641 | bad_syntax: |
642 | a_fail(a, "bad-syntax -- add PEER [-tunnel TUN] ADDR ..."); |
643 | return; |
410c8acf |
644 | } |
645 | |
646 | /*----- Administration commands -------------------------------------------*/ |
647 | |
648 | /* --- Miscellaneous commands --- */ |
649 | |
3cdc3f3a |
650 | /* --- @traceish@ --- * |
651 | * |
652 | * Arguments: @admin *a@ = connection to complain on |
653 | * @unsigned ac@ = number of arguments |
654 | * @char *av[]@ = vector of arguments |
655 | * @const char *what@ = what we're messing with |
656 | * @const trace_opt *tt@ = options table |
657 | * @unsigned *ff@ = where the flags are |
658 | * |
659 | * Returns: Nonzero if anything changed. |
660 | * |
661 | * Use: Guts of trace-ish commands like `trace' and `watch'. |
662 | */ |
410c8acf |
663 | |
3cdc3f3a |
664 | static int traceish(admin *a, unsigned ac, char *av[], |
665 | const char *what, const trace_opt *tt, unsigned *ff) |
410c8acf |
666 | { |
3cdc3f3a |
667 | int ch = 0; |
668 | |
410c8acf |
669 | if (!ac || strcmp(av[0], "?") == 0) { |
670 | const trace_opt *t; |
3cdc3f3a |
671 | a_info(a, "Current %s status:", what); |
672 | for (t = tt; t->ch; t++) { |
673 | a_info(a, "%c %c %s", |
674 | t->ch, (*ff & t->f) == t->f ? '*' : ' ', t->help); |
410c8acf |
675 | } |
676 | } else { |
677 | unsigned sense = 1; |
3cdc3f3a |
678 | unsigned f = *ff; |
679 | const trace_opt *t; |
410c8acf |
680 | char *p = av[0]; |
681 | |
682 | while (*p) { |
683 | switch (*p) { |
684 | case '+': sense = 1; break; |
685 | case '-': sense = 0; break; |
686 | default: |
3cdc3f3a |
687 | for (t = tt; t->ch; t++) { |
688 | if (t->ch == *p) { |
689 | if (sense) f |= t->f; |
690 | else f &= ~t->f; |
410c8acf |
691 | goto tropt_ok; |
692 | } |
693 | } |
3cdc3f3a |
694 | a_fail(a, "bad-%s-option %c", what, *p); |
695 | return (0); |
410c8acf |
696 | tropt_ok:; |
697 | break; |
698 | } |
699 | p++; |
700 | } |
3cdc3f3a |
701 | *ff = f; |
702 | ch = 1; |
410c8acf |
703 | } |
3cdc3f3a |
704 | a_ok(a); |
705 | return (ch); |
706 | } |
707 | |
708 | #ifndef NTRACE |
709 | |
710 | static void acmd_trace(admin *a, unsigned ac, char *av[]) |
711 | { |
712 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) |
713 | trace_level(tr_flags); |
410c8acf |
714 | } |
715 | |
716 | #endif |
717 | |
3cdc3f3a |
718 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
719 | { |
720 | traceish(a, ac, av, "watch", w_opts, &a->f); |
721 | } |
722 | |
723 | static void quotify(dstr *d, const char *p) |
724 | { |
725 | if (d->len) |
726 | dstr_putc(d, ' '); |
727 | if (*p && !p[strcspn(p, "\"' \t\n\v")]) |
728 | dstr_puts(d, p); |
729 | else { |
730 | dstr_putc(d, '\"'); |
731 | while (*p) { |
732 | if (*p == '\\' || *p == '\"') |
733 | dstr_putc(d, '\\'); |
734 | dstr_putc(d, *p++); |
735 | } |
736 | dstr_putc(d, '\"'); |
737 | } |
738 | } |
739 | |
740 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
741 | const char *tag, unsigned ac, char *av[]) |
742 | { |
743 | dstr d = DSTR_INIT; |
744 | unsigned i; |
745 | |
746 | dstr_puts(&d, "USER"); |
747 | for (i = 0; i < ac; i++) |
748 | quotify(&d, av[i]); |
749 | dstr_putz(&d); |
750 | a_rawalert(f_and, f_eq, tag, d.buf, d.len); |
751 | dstr_destroy(&d); |
752 | a_ok(a); |
753 | } |
754 | |
755 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
756 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", ac, av); } |
757 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
758 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", ac, av); } |
759 | |
410c8acf |
760 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
761 | { |
3cdc3f3a |
762 | a_info(a, "%u", p_port()); |
763 | a_ok(a); |
410c8acf |
764 | } |
765 | |
410c8acf |
766 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
767 | { |
768 | if (flags & F_DAEMON) |
3cdc3f3a |
769 | a_fail(a, "already-daemon"); |
410c8acf |
770 | else { |
3cdc3f3a |
771 | a_notify("DAEMON"); |
93bee2c4 |
772 | if (a_stdin) |
410c8acf |
773 | a_destroy(a_stdin); |
410c8acf |
774 | if (u_daemon()) |
3cdc3f3a |
775 | a_fail(a, "daemon-error -- %s", strerror(errno)); |
93bee2c4 |
776 | else { |
410c8acf |
777 | flags |= F_DAEMON; |
3cdc3f3a |
778 | a_ok(a); |
93bee2c4 |
779 | } |
410c8acf |
780 | } |
781 | } |
782 | |
783 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
784 | { |
785 | peer *p; |
786 | for (p = p_first(); p; p = p_next(p)) |
3cdc3f3a |
787 | a_info(a, "%s", p_name(p)); |
788 | a_ok(a); |
410c8acf |
789 | } |
790 | |
791 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) |
792 | { |
793 | peer *p; |
794 | |
795 | if ((p = p_find(av[0])) == 0) |
3cdc3f3a |
796 | a_fail(a, "unknown-peer %s", av[0]); |
797 | else { |
798 | a_info(a, "%s", p_ifname(p)); |
799 | a_ok(a); |
800 | } |
410c8acf |
801 | } |
802 | |
803 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
804 | { |
805 | peer *p; |
806 | const addr *ad; |
807 | |
808 | if ((p = p_find(av[0])) == 0) |
3cdc3f3a |
809 | a_fail(a, "unknown-peer %s", av[0]); |
410c8acf |
810 | else { |
811 | ad = p_addr(p); |
812 | assert(ad->sa.sa_family == AF_INET); |
3cdc3f3a |
813 | a_info(a, "INET %s %u", |
410c8acf |
814 | inet_ntoa(ad->sin.sin_addr), |
815 | (unsigned)ntohs(ad->sin.sin_port)); |
3cdc3f3a |
816 | a_ok(a); |
410c8acf |
817 | } |
818 | } |
819 | |
c7053da9 |
820 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
821 | { |
822 | peer *p; |
823 | stats *st; |
824 | |
825 | if ((p = p_find(av[0])) == 0) |
3cdc3f3a |
826 | a_fail(a, "unknown-peer %s", av[0]); |
c7053da9 |
827 | else { |
828 | st = p_stats(p); |
3cdc3f3a |
829 | a_info(a, "start-time=%s", timestr(st->t_start)); |
830 | a_info(a, "last-packet-time=%s", timestr(st->t_last)); |
831 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx)); |
832 | a_info(a, "packets-in=%lu bytes-in=%lu", st->n_in, st->sz_in); |
833 | a_info(a, "packets-out=%lu bytes-out=%lu", |
c7053da9 |
834 | st->n_out, st->sz_out); |
3cdc3f3a |
835 | a_info(a, "keyexch-packets-in=%lu keyexch-bytes-in=%lu", |
c7053da9 |
836 | st->n_kxin, st->sz_kxin); |
3cdc3f3a |
837 | a_info(a, "keyexch-packets-out=%lu keyexch-bytes-out=%lu", |
c7053da9 |
838 | st->n_kxout, st->sz_kxout); |
3cdc3f3a |
839 | a_info(a, "ip-packets-in=%lu ip-bytes-in=%lu", |
c7053da9 |
840 | st->n_ipin, st->sz_ipin); |
3cdc3f3a |
841 | a_info(a, "ip-packets-out=%lu ip-bytes-out=%lu", |
c7053da9 |
842 | st->n_ipout, st->sz_ipout); |
3cdc3f3a |
843 | a_info(a, "rejected-packets=%lu", st->n_reject); |
844 | a_ok(a); |
c7053da9 |
845 | } |
846 | } |
847 | |
410c8acf |
848 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
849 | { |
850 | peer *p; |
851 | if ((p = p_find(av[0])) == 0) |
3cdc3f3a |
852 | a_fail(a, "unknown-peer %s", av[0]); |
410c8acf |
853 | else { |
854 | p_destroy(p); |
3cdc3f3a |
855 | a_ok(a); |
410c8acf |
856 | } |
857 | } |
858 | |
859 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
860 | { |
3cdc3f3a |
861 | a_warn("SERVER quit admin-request"); |
862 | a_ok(a); |
410c8acf |
863 | a_quit(); |
864 | } |
865 | |
3cdc3f3a |
866 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
867 | { |
868 | a_info(a, "%s %s", PACKAGE, VERSION); |
869 | a_ok(a); |
870 | } |
871 | |
42da2a58 |
872 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
873 | { |
874 | int i; |
875 | for (i = 0; tunnels[i]; i++) |
876 | a_info(a, "%s", tunnels[i]->name); |
877 | a_ok(a); |
878 | } |
879 | |
410c8acf |
880 | /* --- The command table and help --- */ |
881 | |
882 | typedef struct acmd { |
883 | const char *name; |
884 | const char *help; |
885 | unsigned argmin, argmax; |
886 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); |
887 | } acmd; |
888 | |
889 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); |
890 | |
891 | static const acmd acmdtab[] = { |
2d752320 |
892 | { "help", "help", 0, 0, acmd_help }, |
3cdc3f3a |
893 | { "version", "version", 0, 0, acmd_version }, |
410c8acf |
894 | #ifndef NTRACE |
2d752320 |
895 | { "trace", "trace [OPTIONS]", 0, 1, acmd_trace }, |
410c8acf |
896 | #endif |
3cdc3f3a |
897 | { "watch", "watch [OPTIONS]", 0, 1, acmd_watch }, |
898 | { "notify", "notify MESSAGE ...", 1, 0xffff, acmd_notify }, |
899 | { "warn", "warn MESSAGE ...", 1, 0xffff, acmd_warn }, |
2d752320 |
900 | { "port", "port", 0, 0, acmd_port }, |
901 | { "daemon", "daemon", 0, 0, acmd_daemon }, |
902 | { "list", "list", 0, 0, acmd_list }, |
903 | { "ifname", "ifname PEER", 1, 1, acmd_ifname }, |
904 | { "addr", "addr PEER", 1, 1, acmd_addr }, |
905 | { "stats", "stats PEER", 1, 1, acmd_stats }, |
906 | { "kill", "kill PEER", 1, 1, acmd_kill }, |
42da2a58 |
907 | { "add", "add PEER [-tunnel TUN] ADDR ...", |
908 | 2, 0xffff, acmd_add }, |
909 | { "tunnels", "tunnels", 0, 0, acmd_tunnels }, |
2d752320 |
910 | { "quit", "quit", 0, 0, acmd_quit }, |
410c8acf |
911 | { 0, 0, 0, 0, 0 } |
912 | }; |
913 | |
914 | static void acmd_help(admin *a, unsigned ac, char *av[]) |
915 | { |
916 | const acmd *c; |
917 | for (c = acmdtab; c->name; c++) |
3cdc3f3a |
918 | a_info(a, "%s", c->help); |
919 | a_ok(a); |
410c8acf |
920 | } |
921 | |
922 | /*----- Connection handling -----------------------------------------------*/ |
923 | |
fd3cf232 |
924 | /* --- @a_lock@ --- * |
410c8acf |
925 | * |
926 | * Arguments: @admin *a@ = pointer to an admin block |
927 | * |
928 | * Returns: --- |
929 | * |
fd3cf232 |
930 | * Use: Locks an admin block so that it won't be destroyed |
931 | * immediately. |
410c8acf |
932 | */ |
933 | |
fd3cf232 |
934 | static void a_lock(admin *a) { assert(!(a->f & AF_LOCK)); a->f |= AF_LOCK; } |
935 | |
936 | /* --- @a_unlock@ --- * |
937 | * |
938 | * Arguments: @admin *a@ = pointer to an admin block |
939 | * |
940 | * Returns: --- |
941 | * |
942 | * Use: Unlocks an admin block, allowing its destruction. This is |
943 | * also the second half of @a_destroy@. |
944 | */ |
945 | |
946 | static void a_unlock(admin *a) |
410c8acf |
947 | { |
fd3cf232 |
948 | assert(a->f & AF_LOCK); |
949 | if (!(a->f & AF_DEAD)) { |
950 | a->f &= ~AF_LOCK; |
951 | return; |
952 | } |
953 | |
954 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
955 | a->seq); ) |
956 | |
410c8acf |
957 | selbuf_destroy(&a->b); |
410c8acf |
958 | if (a->pname) { |
959 | xfree(a->pname); |
960 | xfree(a->paddr); |
961 | bres_abort(&a->r); |
962 | sel_rmtimer(&a->t); |
963 | } |
fd3cf232 |
964 | if (a->b.reader.fd != a->w.fd) |
965 | close(a->b.reader.fd); |
966 | close(a->w.fd); |
967 | |
968 | if (a_stdin == a) |
969 | a_stdin = 0; |
410c8acf |
970 | if (a->next) |
971 | a->next->prev = a->prev; |
972 | if (a->prev) |
973 | a->prev->next = a->next; |
974 | else |
975 | admins = a->next; |
410c8acf |
976 | DESTROY(a); |
977 | } |
978 | |
fd3cf232 |
979 | /* --- @a_destroy@ --- * |
980 | * |
981 | * Arguments: @admin *a@ = pointer to an admin block |
982 | * |
983 | * Returns: --- |
984 | * |
985 | * Use: Destroys an admin block. This requires a certain amount of |
986 | * care. |
987 | */ |
988 | |
989 | static void a_destroy(admin *a) |
990 | { |
991 | /* --- Don't multiply destroy admin blocks --- */ |
992 | |
993 | if (a->f & AF_DEAD) |
994 | return; |
995 | |
996 | /* --- Make sure nobody expects it to work --- */ |
997 | |
998 | a->f |= AF_DEAD; |
999 | T( trace(T_ADMIN, "admin: destroying connection %u", a->seq); ) |
1000 | |
1001 | /* --- Free the output buffers --- */ |
1002 | |
1003 | if (a->o_head) { |
1004 | obuf *o, *oo; |
1005 | sel_rmfile(&a->w); |
1006 | for (o = a->o_head; o; o = oo) { |
1007 | oo = o->next; |
1008 | xfree(o); |
1009 | } |
1010 | a->o_head = 0; |
1011 | } |
1012 | |
1013 | /* --- If the block is locked, that's all we can manage --- */ |
1014 | |
1015 | if (a->f & AF_LOCK) { |
1016 | T( trace(T_ADMIN, "admin: deferring destruction..."); ) |
1017 | return; |
1018 | } |
1019 | a->f |= AF_LOCK; |
1020 | a_unlock(a); |
1021 | } |
1022 | |
410c8acf |
1023 | /* --- @a_line@ --- * |
1024 | * |
1025 | * Arguments: @char *p@ = pointer to the line read |
3008eabf |
1026 | * @size_t len@ = length of the line |
410c8acf |
1027 | * @void *vp@ = pointer to my admin block |
1028 | * |
1029 | * Returns: --- |
1030 | * |
1031 | * Use: Handles a line of input. |
1032 | */ |
1033 | |
3008eabf |
1034 | static void a_line(char *p, size_t len, void *vp) |
410c8acf |
1035 | { |
1036 | admin *a = vp; |
1037 | const acmd *c; |
3cdc3f3a |
1038 | char *av[16]; |
410c8acf |
1039 | size_t ac; |
1040 | |
8d0c7a83 |
1041 | TIMER; |
fd3cf232 |
1042 | if (a->f & AF_DEAD) |
1043 | return; |
410c8acf |
1044 | if (!p) { |
1045 | a_destroy(a); |
1046 | return; |
1047 | } |
3cdc3f3a |
1048 | ac = str_qsplit(p, av, 16, 0, STRF_QUOTE); |
410c8acf |
1049 | if (!ac) |
1050 | return; |
410c8acf |
1051 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a |
1052 | if (mystrieq(av[0], c->name)) { |
410c8acf |
1053 | ac--; |
1054 | if (c->argmin > ac || ac > c->argmax) |
3cdc3f3a |
1055 | a_fail(a, "bad-syntax -- %s", c->help); |
fd3cf232 |
1056 | else { |
1057 | a_lock(a); |
410c8acf |
1058 | c->func(a, ac, av + 1); |
fd3cf232 |
1059 | a_unlock(a); |
1060 | } |
410c8acf |
1061 | return; |
1062 | } |
1063 | } |
3cdc3f3a |
1064 | a_fail(a, "unknown-command %s", av[0]); |
410c8acf |
1065 | } |
1066 | |
1067 | /* --- @a_create@ --- * |
1068 | * |
1069 | * Arguments: @int fd_in, fd_out@ = file descriptors to use |
3cdc3f3a |
1070 | * @unsigned f@ = initial flags to set |
410c8acf |
1071 | * |
1072 | * Returns: --- |
1073 | * |
1074 | * Use: Creates a new admin connection. |
1075 | */ |
1076 | |
3cdc3f3a |
1077 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf |
1078 | { |
1079 | admin *a = CREATE(admin); |
3cdc3f3a |
1080 | |
93bee2c4 |
1081 | T( static unsigned seq = 0; |
1082 | a->seq = seq++; ) |
410c8acf |
1083 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
1084 | a->pname = 0; |
3cdc3f3a |
1085 | a->f = f; |
410c8acf |
1086 | if (fd_in == STDIN_FILENO) |
1087 | a_stdin = a; |
fd3cf232 |
1088 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf |
1089 | if (fd_out != fd_in) |
fd3cf232 |
1090 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf |
1091 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 |
1092 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
1093 | a->o_head = 0; |
1094 | a->o_tail = 0; |
410c8acf |
1095 | a->next = admins; |
1096 | a->prev = 0; |
1097 | if (admins) |
1098 | admins->prev = a; |
1099 | admins = a; |
1100 | } |
1101 | |
1102 | /* --- @a_accept@ --- * |
1103 | * |
1104 | * Arguments: @int fd@ = file descriptor to accept |
1105 | * @unsigned mode@ = what to do |
1106 | * @void *v@ = uninteresting pointer |
1107 | * |
1108 | * Returns: --- |
1109 | * |
1110 | * Use: Accepts a new admin connection. |
1111 | */ |
1112 | |
1113 | static void a_accept(int fd, unsigned mode, void *v) |
1114 | { |
1115 | int nfd; |
1116 | struct sockaddr_un sun; |
1117 | size_t sz = sizeof(sun); |
1118 | |
1119 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { |
1ecee057 |
1120 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
1121 | errno != ECONNABORTED && errno != EPROTO) |
3cdc3f3a |
1122 | a_warn("ADMIN accept-error -- %s", strerror(errno)); |
410c8acf |
1123 | return; |
1124 | } |
3cdc3f3a |
1125 | a_create(nfd, nfd, 0); |
410c8acf |
1126 | } |
1127 | |
1128 | /* --- @a_daemon@ --- * |
1129 | * |
1130 | * Arguments: --- |
1131 | * |
1132 | * Returns: --- |
1133 | * |
1134 | * Use: Informs the admin module that it's a daemon. |
1135 | */ |
1136 | |
1137 | void a_daemon(void) |
1138 | { |
1139 | flags |= F_DAEMON; |
1140 | } |
1141 | |
1142 | /* --- @a_init@ --- * |
1143 | * |
1144 | * Arguments: @const char *name@ = socket name to create |
1145 | * |
1146 | * Returns: --- |
1147 | * |
1148 | * Use: Creates the admin listening socket. |
1149 | */ |
1150 | |
1151 | void a_init(const char *name) |
1152 | { |
1153 | int fd; |
1154 | int n = 5; |
1155 | struct sockaddr_un sun; |
1156 | struct sigaction sa; |
1157 | size_t sz; |
1158 | |
1159 | /* --- Set up the socket address --- */ |
1160 | |
1161 | sz = strlen(name) + 1; |
1162 | if (sz > sizeof(sun.sun_path)) |
1163 | die(EXIT_FAILURE, "socket name `%s' too long", name); |
1164 | BURN(sun); |
1165 | sun.sun_family = AF_UNIX; |
1166 | memcpy(sun.sun_path, name, sz); |
1167 | sz += offsetof(struct sockaddr_un, sun_path); |
1168 | |
1169 | /* --- Attempt to bind to the socket --- */ |
1170 | |
1171 | umask(0077); |
1172 | again: |
1173 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) |
1174 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); |
1175 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { |
1176 | struct stat st; |
1177 | int e = errno; |
1178 | if (errno != EADDRINUSE) { |
1179 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", |
1180 | sun.sun_path, strerror(e)); |
1181 | } |
1182 | if (!n) |
1183 | die(EXIT_FAILURE, "too many retries; giving up"); |
1184 | n--; |
1185 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { |
1186 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", |
1187 | sun.sun_path); |
1188 | } |
1189 | if (errno != ECONNREFUSED) |
1190 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); |
1191 | if (stat(sun.sun_path, &st)) { |
1192 | die(EXIT_FAILURE, "couldn't stat `%s': %s", |
1193 | sun.sun_path, strerror(errno)); |
1194 | } |
1195 | if (!S_ISSOCK(st.st_mode)) |
1196 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); |
c7053da9 |
1197 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf |
1198 | unlink(sun.sun_path); |
1199 | close(fd); |
1200 | goto again; |
1201 | } |
1202 | chmod(sun.sun_path, 0600); |
1203 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
1204 | if (listen(fd, 5)) |
1205 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); |
1206 | |
1207 | /* --- Listen to the socket --- */ |
1208 | |
1209 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); |
1210 | sel_addfile(&sock); |
1211 | sockname = name; |
1212 | bres_init(&sel); |
1213 | T( trace_custom(a_trace, 0); |
1214 | trace(T_ADMIN, "admin: enabled custom tracing"); ) |
1215 | flags |= F_INIT; |
1216 | |
1217 | /* --- Set up signal handlers --- */ |
1218 | |
1219 | sig_add(&s_term, SIGTERM, a_sigdie, 0); |
1220 | sig_add(&s_hup, SIGHUP, a_sighup, 0); |
3cdc3f3a |
1221 | signal(SIGPIPE, SIG_IGN); |
410c8acf |
1222 | sigaction(SIGINT, 0, &sa); |
1223 | if (sa.sa_handler != SIG_IGN) |
1224 | sig_add(&s_int, SIGINT, a_sigdie, 0); |
1225 | } |
1226 | |
1227 | /*----- That's all, folks -------------------------------------------------*/ |