Commit | Line | Data |
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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" }, | |
410c8acf | 41 | { 's', T_KEYSET, "symmetric keyset management" }, |
42 | { 'x', T_KEYEXCH, "key exchange" }, | |
43 | { 'm', T_KEYMGMT, "key management" }, | |
37941236 | 44 | { 'l', T_CHAL, "challenge management" }, |
45 | { 'p', T_PACKET, "packet contents" }, | |
46 | { 'c', T_CRYPTO, "crypto details" }, | |
410c8acf | 47 | { 'A', T_ALL, "all of the above" }, |
48 | { 0, 0, 0 } | |
49 | }; | |
50 | ||
51 | unsigned tr_flags = 0; | |
52 | #endif | |
53 | ||
3cdc3f3a | 54 | static const trace_opt w_opts[] = { |
55 | { 't', AF_TRACE, "trace messages" }, | |
56 | { 'n', AF_NOTE, "asynchronous notifications" }, | |
57 | { 'w', AF_WARN, "warnings" }, | |
58 | { 'A', AF_ALLMSGS, "all of the above" }, | |
59 | { 0, 0, 0 } | |
60 | }; | |
61 | ||
410c8acf | 62 | /*----- Static variables --------------------------------------------------*/ |
63 | ||
64 | static admin *admins; | |
c511e1f9 | 65 | static admin *a_dead; |
410c8acf | 66 | static sel_file sock; |
67 | static const char *sockname; | |
68 | static unsigned flags = 0; | |
69 | static admin *a_stdin = 0; | |
70 | static sig s_term, s_int, s_hup; | |
71 | ||
72 | #define F_DAEMON 1u | |
73 | #define F_INIT 2u | |
74 | ||
75 | #define T_RESOLVE SEC(30) | |
0ba8de86 | 76 | #define T_PING SEC(5) |
410c8acf | 77 | |
fd3cf232 | 78 | static void a_destroy(admin */*a*/); |
fd3cf232 | 79 | |
060ca767 | 80 | #define BOOL(x) ((x) ? "t" : "nil") |
81 | ||
fd3cf232 | 82 | /*----- Output functions --------------------------------------------------*/ |
83 | ||
84 | /* --- @trywrite@ --- * | |
85 | * | |
86 | * Arguments: @admin *a@ = pointer to an admin block | |
87 | * @const char *p@ = pointer to buffer to write | |
88 | * @size_t sz@ = size of data to write | |
89 | * | |
90 | * Returns: The number of bytes written, or less than zero on error. | |
91 | * | |
92 | * Use: Attempts to write data to a client. | |
93 | */ | |
94 | ||
95 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
96 | { | |
97 | ssize_t n, done = 0; | |
98 | ||
99 | again: | |
100 | if (!sz) | |
101 | return (done); | |
102 | n = write(a->w.fd, p, sz); | |
103 | if (n > 0) { | |
104 | done += n; | |
105 | p += n; | |
106 | sz -= n; | |
107 | goto again; | |
108 | } | |
109 | if (n < 0) { | |
110 | if (errno == EINTR) | |
111 | goto again; | |
112 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
113 | a_destroy(a); | |
f43df819 | 114 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 115 | return (-1); |
116 | } | |
117 | } | |
118 | return (done); | |
119 | } | |
120 | ||
de014da6 | 121 | /* --- @doqueue@ -- * |
fd3cf232 | 122 | * |
de014da6 | 123 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 124 | * @const char *p@ = pointer to buffer to write |
de014da6 | 125 | * @size_t sz@ = size of buffer |
fd3cf232 | 126 | * |
de014da6 | 127 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 128 | * |
de014da6 | 129 | * Use: Queues data to be written later. |
fd3cf232 | 130 | */ |
131 | ||
de014da6 | 132 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 133 | { |
fd3cf232 | 134 | obuf *o; |
de014da6 | 135 | int rc = 0; |
136 | size_t n; | |
fd3cf232 | 137 | |
de014da6 | 138 | o = q->tl; |
fd3cf232 | 139 | if (!o) |
de014da6 | 140 | rc = 1; |
fd3cf232 | 141 | else if (o->p_in < o->buf + OBUFSZ) |
142 | goto noalloc; | |
143 | ||
144 | do { | |
145 | o = xmalloc(sizeof(obuf)); | |
146 | o->next = 0; | |
147 | o->p_in = o->p_out = o->buf; | |
de014da6 | 148 | if (q->tl) |
149 | q->tl->next = o; | |
fd3cf232 | 150 | else |
de014da6 | 151 | q->hd = o; |
152 | q->tl = o; | |
fd3cf232 | 153 | |
154 | noalloc: | |
155 | n = o->buf + OBUFSZ - o->p_in; | |
156 | if (n > sz) | |
157 | n = sz; | |
158 | memcpy(o->p_in, p, n); | |
159 | o->p_in += n; | |
160 | p += n; | |
161 | sz -= n; | |
162 | } while (sz); | |
de014da6 | 163 | |
164 | return (rc); | |
165 | } | |
166 | ||
167 | /* --- @dosend@ --- * | |
168 | * | |
169 | * Arguemnts: @admin *a@ = pointer to an admin block | |
170 | * @const char *p@ = pointer to buffer to write | |
171 | * @size_t sz@ = size of data to write | |
172 | * | |
173 | * Returns: --- | |
174 | * | |
175 | * Use: Sends data to an admin client. | |
176 | */ | |
177 | ||
178 | static void dosend(admin *a, const char *p, size_t sz) | |
179 | { | |
180 | ssize_t n; | |
181 | ||
182 | if (a->f & AF_DEAD) | |
183 | return; | |
184 | if (!a->out.hd) { | |
185 | if ((n = trywrite(a, p, sz)) < 0) | |
186 | return; | |
187 | p += n; | |
188 | sz -= n; | |
189 | if (!sz) | |
190 | return; | |
191 | } | |
192 | if (doqueue(&a->out, p, sz)) | |
193 | sel_addfile(&a->w); | |
fd3cf232 | 194 | } |
195 | ||
196 | /* --- @a_flush@ --- * | |
197 | * | |
198 | * Arguments: @int fd@ = file descriptor | |
199 | * @unsigned mode@ = what's happening | |
200 | * @void *v@ = pointer to my admin block | |
201 | * | |
202 | * Returns: --- | |
203 | * | |
204 | * Use: Flushes buffers when a client is ready to read again. | |
205 | */ | |
206 | ||
207 | static void a_flush(int fd, unsigned mode, void *v) | |
208 | { | |
209 | admin *a = v; | |
210 | obuf *o, *oo; | |
211 | ssize_t n; | |
212 | ||
de014da6 | 213 | o = a->out.hd; |
fd3cf232 | 214 | while (o) { |
215 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
216 | return; | |
217 | o->p_out += n; | |
218 | if (o->p_in < o->p_out) | |
219 | break; | |
220 | oo = o; | |
221 | o = o->next; | |
222 | xfree(oo); | |
223 | } | |
de014da6 | 224 | a->out.hd = o; |
fd3cf232 | 225 | if (!o) { |
de014da6 | 226 | a->out.tl = 0; |
fd3cf232 | 227 | sel_rmfile(&a->w); |
228 | } | |
229 | } | |
230 | ||
410c8acf | 231 | /*----- Utility functions -------------------------------------------------*/ |
232 | ||
f43df819 MW |
233 | /* --- @quotify@ --- * |
234 | * | |
235 | * Arguments: @dstr *d@ = where to write the answer | |
236 | * @const char *p@ = string to quotify | |
237 | * | |
238 | * Returns: --- | |
239 | * | |
240 | * Use: Quotes the given string if necessary, according to our | |
241 | * quoting rules. | |
242 | */ | |
243 | ||
244 | static void quotify(dstr *d, const char *p) | |
245 | { | |
246 | if (d->len) | |
247 | dstr_putc(d, ' '); | |
248 | if (*p && !p[strcspn(p, "\"' \t\n\v")]) | |
249 | dstr_puts(d, p); | |
250 | else { | |
251 | dstr_putc(d, '\"'); | |
252 | while (*p) { | |
253 | if (*p == '\\' || *p == '\"') | |
254 | dstr_putc(d, '\\'); | |
255 | dstr_putc(d, *p++); | |
256 | } | |
257 | dstr_putc(d, '\"'); | |
258 | } | |
259 | } | |
260 | ||
261 | /* --- @a_vformat@ --- * | |
262 | * | |
263 | * Arguments: @dstr *d@ = where to leave the formatted message | |
264 | * @const char *fmt@ = pointer to format string | |
265 | * @va_list ap@ = arguments in list | |
266 | * | |
267 | * Returns: --- | |
268 | * | |
269 | * Use: Main message token formatting driver. | |
270 | */ | |
271 | ||
272 | static void a_vformat(dstr *d, const char *fmt, va_list ap) | |
273 | { | |
274 | dstr dd = DSTR_INIT; | |
275 | ||
276 | while (fmt) { | |
277 | if (*fmt == '*') { | |
278 | dstr_putc(d, ' '); | |
279 | dstr_vputf(d, fmt + 1, &ap); | |
280 | } else if (*fmt == '?') { | |
281 | if (strcmp(fmt, "?ADDR") == 0) { | |
282 | const addr *a = va_arg(ap, const addr *); | |
283 | switch (a->sa.sa_family) { | |
284 | case AF_INET: | |
285 | quotify(d, "INET"); | |
286 | quotify(d, inet_ntoa(a->sin.sin_addr)); | |
287 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); | |
288 | break; | |
289 | default: | |
290 | abort(); | |
291 | } | |
292 | } else if (strcmp(fmt, "?B64") == 0) { | |
293 | const octet *p = va_arg(ap, const octet *); | |
294 | size_t n = va_arg(ap, size_t); | |
295 | base64_ctx b64; | |
296 | dstr_putc(d, ' '); | |
297 | base64_init(&b64); | |
298 | b64.indent = ""; | |
299 | b64.maxline = 0; | |
300 | base64_encode(&b64, p, n, d); | |
301 | base64_encode(&b64, 0, 0, d); | |
302 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
303 | } else if (strcmp(fmt, "?PEER") == 0) | |
304 | quotify(d, p_name(va_arg(ap, peer *))); | |
305 | else if (strcmp(fmt, "?ERRNO") == 0) { | |
306 | dstr_putf(d, " E%d", errno); | |
307 | quotify(d, strerror(errno)); | |
308 | } else | |
309 | abort(); | |
310 | } else { | |
311 | if (*fmt == '!') fmt++; | |
312 | DRESET(&dd); | |
313 | dstr_vputf(&dd, fmt, &ap); | |
314 | quotify(d, dd.buf); | |
315 | } | |
316 | fmt = va_arg(ap, const char *); | |
317 | } | |
318 | ||
319 | dstr_destroy(&dd); | |
320 | } | |
321 | ||
3cdc3f3a | 322 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 323 | * |
324 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 325 | * @const char *status@ = status code to report |
326 | * @const char *tag@ = tag string, or null | |
410c8acf | 327 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 328 | * @va_list ap@ = arguments in list |
410c8acf | 329 | * @...@ = other arguments |
330 | * | |
331 | * Returns: --- | |
332 | * | |
333 | * Use: Sends a message to an admin connection. | |
334 | */ | |
335 | ||
de014da6 | 336 | static void a_vwrite(admin *a, const char *status, const char *tag, |
337 | const char *fmt, va_list ap) | |
410c8acf | 338 | { |
410c8acf | 339 | dstr d = DSTR_INIT; |
de014da6 | 340 | if (tag) dstr_puts(&d, "BG"); |
341 | dstr_puts(&d, status); | |
f43df819 MW |
342 | if (tag) quotify(&d, tag); |
343 | a_vformat(&d, fmt, ap); | |
3cdc3f3a | 344 | dstr_putc(&d, '\n'); |
345 | dosend(a, d.buf, d.len); | |
346 | dstr_destroy(&d); | |
347 | } | |
348 | ||
de014da6 | 349 | static void a_write(admin *a, const char *status, const char *tag, |
350 | const char *fmt, ...) | |
3cdc3f3a | 351 | { |
352 | va_list ap; | |
410c8acf | 353 | va_start(ap, fmt); |
de014da6 | 354 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 355 | va_end(ap); |
3cdc3f3a | 356 | } |
357 | ||
358 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
359 | * | |
360 | * Arguments: @admin *a@ = connection | |
361 | * @const char *fmt@ = format string | |
362 | * @...@ = other arguments | |
363 | * | |
364 | * Returns: --- | |
365 | * | |
366 | * Use: Convenience functions for @a_write@. | |
367 | */ | |
368 | ||
f43df819 | 369 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 370 | |
371 | static void a_info(admin *a, const char *fmt, ...) | |
372 | { | |
373 | va_list ap; | |
374 | va_start(ap, fmt); | |
de014da6 | 375 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 376 | va_end(ap); |
377 | } | |
378 | ||
379 | static void a_fail(admin *a, const char *fmt, ...) | |
380 | { | |
381 | va_list ap; | |
382 | va_start(ap, fmt); | |
de014da6 | 383 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 384 | va_end(ap); |
385 | } | |
386 | ||
387 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
388 | * | |
389 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 390 | * @const char *status@ = status string |
3cdc3f3a | 391 | * @const char *fmt@ = pointer to format string |
de014da6 | 392 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 393 | * @size_t sz@ = size of raw string |
394 | * @va_list ap@ = arguments in list | |
395 | * @...@ = other arguments | |
396 | * | |
397 | * Returns: --- | |
398 | * | |
399 | * Use: Write a message to all admin connections matched by the given | |
400 | * filter. | |
401 | */ | |
402 | ||
de014da6 | 403 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 404 | const char *p, size_t sz) |
405 | { | |
406 | admin *a, *aa; | |
407 | dstr d = DSTR_INIT; | |
408 | ||
409 | if (!(flags & F_INIT)) | |
410 | return; | |
de014da6 | 411 | dstr_puts(&d, status); |
412 | if (p) { | |
413 | dstr_putc(&d, ' '); | |
3cdc3f3a | 414 | dstr_putm(&d, p, sz); |
de014da6 | 415 | } |
3cdc3f3a | 416 | dstr_putc(&d, '\n'); |
417 | p = d.buf; | |
418 | sz = d.len; | |
419 | for (a = admins; a; a = aa) { | |
420 | aa = a->next; | |
421 | if ((a->f & f_and) == f_eq) | |
422 | dosend(a, d.buf, d.len); | |
423 | } | |
410c8acf | 424 | dstr_destroy(&d); |
425 | } | |
426 | ||
3cdc3f3a | 427 | static void a_valert(unsigned f_and, unsigned f_eq, const char *tag, |
428 | const char *fmt, va_list ap) | |
429 | { | |
430 | dstr d = DSTR_INIT; | |
431 | ||
432 | if (!(flags & F_INIT)) | |
433 | return; | |
f43df819 | 434 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 435 | a_rawalert(f_and, f_eq, tag, fmt ? d.buf : 0, fmt ? d.len : 0); |
436 | dstr_destroy(&d); | |
437 | } | |
438 | ||
439 | #if 0 /*unused*/ | |
440 | static void a_alert(unsigned f_and, unsigned f_eq, const char *tag, | |
441 | const char *fmt, ...) | |
442 | { | |
443 | va_list ap; | |
444 | va_start(ap, fmt); | |
445 | a_valert(f_and, f_eq, tag, fmt, ap); | |
446 | va_end(ap); | |
447 | } | |
448 | #endif | |
449 | ||
410c8acf | 450 | /* --- @a_warn@ --- * |
451 | * | |
452 | * Arguments: @const char *fmt@ = pointer to format string | |
453 | * @...@ = other arguments | |
454 | * | |
455 | * Returns: --- | |
456 | * | |
457 | * Use: Informs all admin connections of a warning. | |
458 | */ | |
459 | ||
460 | void a_warn(const char *fmt, ...) | |
461 | { | |
462 | va_list ap; | |
410c8acf | 463 | |
410c8acf | 464 | va_start(ap, fmt); |
3cdc3f3a | 465 | if (flags & F_INIT) |
466 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 467 | else { |
f43df819 | 468 | dstr d = DSTR_INIT; |
3cdc3f3a | 469 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
470 | a_vformat(&d, fmt, ap); |
471 | dstr_putc(&d, '\n'); | |
472 | dstr_write(&d, stderr); | |
473 | dstr_destroy(&d); | |
410c8acf | 474 | } |
3cdc3f3a | 475 | va_end(ap); |
410c8acf | 476 | } |
477 | ||
478 | /* --- @a_trace@ --- * | |
479 | * | |
480 | * Arguments: @const char *p@ = pointer to a buffer | |
481 | * @size_t sz@ = size of the buffer | |
482 | * @void *v@ = uninteresting pointer | |
483 | * | |
484 | * Returns: --- | |
485 | * | |
3cdc3f3a | 486 | * Use: Custom trace output handler. Sends trace messages to |
487 | * interested admin connections. | |
410c8acf | 488 | */ |
489 | ||
490 | #ifndef NTRACE | |
491 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 492 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 493 | #endif |
494 | ||
3cdc3f3a | 495 | /* --- @a_notify@ --- * |
496 | * | |
497 | * Arguments: @const char *fmt@ = pointer to format string | |
498 | * @...@ = other arguments | |
499 | * | |
500 | * Returns: --- | |
501 | * | |
502 | * Use: Sends a notification to interested admin connections. | |
503 | */ | |
504 | ||
505 | void a_notify(const char *fmt, ...) | |
506 | { | |
507 | va_list ap; | |
508 | ||
509 | va_start(ap, fmt); | |
510 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
511 | va_end(ap); | |
512 | } | |
513 | ||
410c8acf | 514 | /* --- @a_quit@ --- * |
515 | * | |
516 | * Arguments: --- | |
517 | * | |
518 | * Returns: --- | |
519 | * | |
520 | * Use: Shuts things down nicely. | |
521 | */ | |
522 | ||
523 | void a_quit(void) | |
524 | { | |
42da2a58 | 525 | peer *p; |
526 | ||
410c8acf | 527 | close(sock.fd); |
528 | unlink(sockname); | |
de014da6 | 529 | while ((p = p_first()) != 0) |
530 | p_destroy(p); | |
410c8acf | 531 | exit(0); |
532 | } | |
533 | ||
534 | /* --- @a_sigdie@ --- * | |
535 | * | |
536 | * Arguments: @int sig@ = signal number | |
537 | * @void *v@ = an uninteresting argument | |
538 | * | |
539 | * Returns: --- | |
540 | * | |
541 | * Use Shuts down on receipt of a fatal signal. | |
542 | */ | |
543 | ||
544 | static void a_sigdie(int sig, void *v) | |
545 | { | |
546 | char *p; | |
547 | char buf[20]; | |
548 | ||
549 | switch (sig) { | |
550 | case SIGTERM: p = "SIGTERM"; break; | |
551 | case SIGINT: p = "SIGINT"; break; | |
552 | default: | |
3cdc3f3a | 553 | sprintf(buf, "%i", sig); |
410c8acf | 554 | p = buf; |
555 | break; | |
556 | } | |
f43df819 | 557 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 558 | a_quit(); |
559 | } | |
560 | ||
561 | /* --- @a_sighup@ --- * | |
562 | * | |
563 | * Arguments: @int sig@ = signal number | |
564 | * @void *v@ = an uninteresting argument | |
565 | * | |
566 | * Returns: --- | |
567 | * | |
568 | * Use Logs a message about SIGHUP not being useful. | |
569 | */ | |
570 | ||
571 | static void a_sighup(int sig, void *v) | |
572 | { | |
f43df819 | 573 | a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); |
410c8acf | 574 | } |
575 | ||
0ba8de86 | 576 | /* --- @a_parsetime@ --- * |
577 | * | |
578 | * Arguments; @const char *p@ = time string to parse | |
579 | * | |
580 | * Returns: Time in seconds, or @< 0@ on error. | |
581 | */ | |
582 | ||
583 | static long a_parsetime(const char *p) | |
584 | { | |
585 | char *q; | |
586 | long t = strtol(p, &q, 0); | |
587 | ||
588 | switch (*q) { | |
589 | case 'd': t *= 24; | |
590 | case 'h': t *= 60; | |
591 | case 'm': t *= 60; | |
592 | case 's': if (q[1] != 0) | |
593 | default: t = -1; | |
594 | case 0: break; | |
595 | } | |
596 | return (t); | |
597 | } | |
598 | ||
37941236 | 599 | /* --- @a_findpeer@ --- * |
600 | * | |
601 | * Arguments: @admin *a@ = admin connection | |
602 | * @const char *pn@ = peer name | |
603 | * | |
604 | * Returns: The peer, or null if not there. | |
605 | * | |
606 | * Use: Finds a peer, reporting an error if it failed. | |
607 | */ | |
608 | ||
609 | static peer *a_findpeer(admin *a, const char *pn) | |
610 | { | |
611 | peer *p; | |
612 | ||
613 | if ((p = p_find(pn)) == 0) | |
f43df819 | 614 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 615 | return (p); |
616 | } | |
617 | ||
de014da6 | 618 | /*----- Backgrounded operations -------------------------------------------*/ |
619 | ||
060ca767 | 620 | #define BGTAG(bg) \ |
621 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
622 | ||
de014da6 | 623 | /* --- @a_bgrelease@ --- * |
624 | * | |
625 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
626 | * | |
627 | * Returns: --- | |
628 | * | |
629 | * Use: Removes a backgrounded operation from the queue, since | |
630 | * (presumably) it's done. | |
631 | */ | |
632 | ||
633 | static void a_bgrelease(admin_bgop *bg) | |
634 | { | |
635 | admin *a = bg->a; | |
636 | ||
060ca767 | 637 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
638 | if (bg->tag) xfree(bg->tag); | |
639 | else selbuf_enable(&a->b); | |
640 | if (bg->next) bg->next->prev = bg->prev; | |
641 | if (bg->prev) bg->prev->next = bg->next; | |
642 | else a->bg = bg->next; | |
de014da6 | 643 | xfree(bg); |
060ca767 | 644 | if (a->f & AF_CLOSE) a_destroy(a); |
de014da6 | 645 | } |
646 | ||
647 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
648 | * | |
649 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
650 | * @const char *fmt@ = format string | |
651 | * @...@ = other arguments | |
652 | * | |
653 | * Returns: --- | |
654 | * | |
655 | * Use: Convenience functions for @a_write@. | |
656 | */ | |
657 | ||
658 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 659 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 660 | |
661 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
662 | { | |
663 | va_list ap; | |
664 | va_start(ap, fmt); | |
665 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
666 | va_end(ap); | |
667 | } | |
668 | ||
669 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
670 | { | |
671 | va_list ap; | |
672 | va_start(ap, fmt); | |
673 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
674 | va_end(ap); | |
675 | } | |
676 | ||
677 | /* --- @a_bgadd@ --- * | |
678 | * | |
679 | * Arguments: @admin *a@ = administration connection | |
680 | * @admin_bgop *bg@ = pointer to background operation | |
681 | * @const char *tag@ = background tag, or null for foreground | |
682 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
683 | * | |
684 | * Returns: --- | |
685 | * | |
686 | * Use: Links a background job into the list. | |
687 | */ | |
688 | ||
689 | static void a_bgadd(admin *a, admin_bgop *bg, const char *tag, | |
690 | void (*cancel)(admin_bgop *)) | |
691 | { | |
692 | if (tag) | |
693 | bg->tag = xstrdup(tag); | |
694 | else { | |
695 | bg->tag = 0; | |
696 | selbuf_disable(&a->b); | |
697 | } | |
698 | bg->a = a; | |
699 | bg->cancel = cancel; | |
700 | bg->next = a->bg; | |
701 | bg->prev = 0; | |
060ca767 | 702 | if (a->bg) a->bg->prev = bg; |
de014da6 | 703 | a->bg = bg; |
060ca767 | 704 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 705 | if (tag) a_write(a, "DETACH", tag, A_END); |
de014da6 | 706 | } |
707 | ||
37941236 | 708 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 709 | |
37941236 | 710 | /* --- @a_resolved@ --- * |
de014da6 | 711 | * |
37941236 | 712 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
713 | * @void *v@ = pointer to resolver operation | |
de014da6 | 714 | * |
715 | * Returns: --- | |
716 | * | |
37941236 | 717 | * Use: Handles a completed name resolution. |
de014da6 | 718 | */ |
719 | ||
37941236 | 720 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 721 | { |
37941236 | 722 | admin_resop *r = v; |
723 | ||
724 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
725 | TIMER; | |
726 | if (!h) { | |
f43df819 | 727 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 728 | r->func(r, ARES_FAIL); |
729 | } else { | |
730 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
731 | r->func(r, ARES_OK); | |
732 | } | |
733 | sel_rmtimer(&r->t); | |
734 | xfree(r->addr); | |
735 | a_bgrelease(&r->bg); | |
736 | } | |
de014da6 | 737 | |
37941236 | 738 | /* --- @a_restimer@ --- * |
de014da6 | 739 | * |
37941236 | 740 | * Arguments: @struct timeval *tv@ = timer |
741 | * @void *v@ = pointer to resolver operation | |
de014da6 | 742 | * |
743 | * Returns: --- | |
744 | * | |
37941236 | 745 | * Use: Times out a resolver. |
de014da6 | 746 | */ |
747 | ||
37941236 | 748 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 749 | { |
37941236 | 750 | admin_resop *r = v; |
751 | ||
752 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 753 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 754 | r->func(r, ARES_FAIL); |
755 | bres_abort(&r->r); | |
756 | xfree(r->addr); | |
757 | a_bgrelease(&r->bg); | |
de014da6 | 758 | } |
759 | ||
37941236 | 760 | /* --- @a_rescancel@ --- * |
de014da6 | 761 | * |
37941236 | 762 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 763 | * |
764 | * Returns: --- | |
765 | * | |
37941236 | 766 | * Use: Cancels an add operation. |
de014da6 | 767 | */ |
768 | ||
37941236 | 769 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 770 | { |
37941236 | 771 | admin_resop *r = (admin_resop *)bg; |
772 | ||
773 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
774 | r->func(r, ARES_FAIL); | |
775 | sel_rmtimer(&r->t); | |
776 | xfree(r->addr); | |
777 | bres_abort(&r->r); | |
de014da6 | 778 | } |
37941236 | 779 | |
780 | /* --- @a_resolve@ --- * | |
410c8acf | 781 | * |
37941236 | 782 | * Arguments: @admin *a@ = administration connection |
783 | * @admin_resop *r@ = resolver operation to run | |
784 | * @const char *tag@ = background operation tag | |
785 | * @void (*func)(struct admin_resop *, int@ = handler function | |
786 | * @unsigned ac@ = number of remaining arguments | |
787 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 788 | * |
789 | * Returns: --- | |
790 | * | |
37941236 | 791 | * Use: Cranks up a resolver job. |
410c8acf | 792 | */ |
793 | ||
37941236 | 794 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
795 | void (*func)(struct admin_resop *, int), | |
796 | unsigned ac, char *av[]) | |
410c8acf | 797 | { |
37941236 | 798 | struct timeval tv; |
799 | unsigned long pt; | |
800 | char *p; | |
801 | int i = 0; | |
fd3cf232 | 802 | |
37941236 | 803 | /* --- Fill in the easy bits of address --- */ |
804 | ||
452bf3f6 | 805 | r->bg.tag = "<starting>"; |
37941236 | 806 | r->addr = 0; |
807 | r->func = func; | |
808 | if (mystrieq(av[i], "inet")) i++; | |
809 | if (ac - i != 2) { | |
f43df819 | 810 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS PORT", A_END); |
37941236 | 811 | goto fail; |
812 | } | |
813 | r->sa.sin.sin_family = AF_INET; | |
814 | r->sasz = sizeof(r->sa.sin); | |
815 | r->addr = xstrdup(av[i]); | |
816 | pt = strtoul(av[i + 1], &p, 0); | |
817 | if (*p) { | |
818 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
819 | if (!s) { | |
f43df819 | 820 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); |
37941236 | 821 | goto fail; |
822 | } | |
823 | pt = ntohs(s->s_port); | |
410c8acf | 824 | } |
37941236 | 825 | if (pt == 0 || pt >= 65536) { |
f43df819 | 826 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 827 | goto fail; |
828 | } | |
829 | r->sa.sin.sin_port = htons(pt); | |
830 | ||
831 | /* --- Report backgrounding --- * | |
832 | * | |
833 | * Do this for consistency of interface, even if we're going to get the | |
834 | * answer straight away. | |
835 | */ | |
836 | ||
837 | a_bgadd(a, &r->bg, tag, a_rescancel); | |
838 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", | |
839 | a->seq, BGTAG(r), r->addr); ) | |
840 | ||
841 | /* --- If the name is numeric, do it the easy way --- */ | |
842 | ||
843 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { | |
844 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
845 | func(r, ARES_OK); | |
846 | xfree(r->addr); | |
847 | a_bgrelease(&r->bg); | |
848 | return; | |
849 | } | |
850 | ||
851 | /* --- Store everything for later and crank up the resolver --- */ | |
852 | ||
853 | gettimeofday(&tv, 0); | |
854 | tv.tv_sec += T_RESOLVE; | |
855 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
856 | bres_byname(&r->r, r->addr, a_resolved, r); | |
857 | return; | |
858 | ||
859 | fail: | |
860 | func(r, ARES_FAIL); | |
861 | if (r->addr) xfree(r->addr); | |
862 | xfree(r); | |
410c8acf | 863 | } |
864 | ||
37941236 | 865 | /*----- Adding peers ------------------------------------------------------*/ |
866 | ||
867 | /* --- @a_doadd@ --- * | |
410c8acf | 868 | * |
37941236 | 869 | * Arguments: @admin_resop *r@ = resolver operation |
870 | * @int rc@ = how it worked | |
410c8acf | 871 | * |
872 | * Returns: --- | |
873 | * | |
37941236 | 874 | * Use: Handles a completed resolution. |
410c8acf | 875 | */ |
876 | ||
37941236 | 877 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 878 | { |
37941236 | 879 | admin_addop *add = (admin_addop *)r; |
880 | ||
881 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
882 | ||
883 | if (rc == ARES_OK) { | |
884 | add->peer.sasz = add->r.sasz; | |
885 | add->peer.sa = add->r.sa; | |
886 | if (p_find(add->peer.name)) | |
f43df819 | 887 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 888 | else if (!p_create(&add->peer)) |
f43df819 | 889 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 890 | else |
891 | a_bgok(&add->r.bg); | |
892 | } | |
de014da6 | 893 | |
37941236 | 894 | xfree(add->peer.name); |
410c8acf | 895 | } |
896 | ||
897 | /* --- @acmd_add@ --- * | |
898 | * | |
899 | * Arguments: @admin *a@ = connection which requested the addition | |
900 | * @unsigned ac@ = argument count | |
901 | * @char *av[]@ = pointer to the argument list | |
902 | * | |
903 | * Returns: --- | |
904 | * | |
905 | * Use: Adds a new peer. | |
906 | */ | |
907 | ||
908 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
909 | { | |
42da2a58 | 910 | unsigned i, j; |
de014da6 | 911 | const char *tag = 0; |
912 | admin_addop *add = 0; | |
410c8acf | 913 | |
0ba8de86 | 914 | /* --- Set stuff up --- */ |
915 | ||
de014da6 | 916 | add = xmalloc(sizeof(*add)); |
917 | add->peer.name = xstrdup(av[0]); | |
918 | add->peer.t_ka = 0; | |
919 | add->peer.tops = tun_default; | |
37941236 | 920 | |
921 | /* --- Make sure someone's not got there already --- */ | |
922 | ||
923 | if (p_find(av[0])) { | |
f43df819 | 924 | a_fail(a, "peer-exists", "%s", av[0], A_END); |
37941236 | 925 | goto fail; |
926 | } | |
0ba8de86 | 927 | |
42da2a58 | 928 | /* --- Parse options --- */ |
929 | ||
930 | i = 1; | |
931 | for (;;) { | |
932 | if (!av[i]) | |
933 | goto bad_syntax; | |
de014da6 | 934 | if (mystrieq(av[i], "-background")) { |
935 | if (!av[++i]) goto bad_syntax; | |
936 | tag = av[i]; | |
937 | } else if (mystrieq(av[i], "-tunnel")) { | |
0ba8de86 | 938 | if (!av[++i]) goto bad_syntax; |
42da2a58 | 939 | for (j = 0;; j++) { |
940 | if (!tunnels[j]) { | |
f43df819 | 941 | a_fail(a, "unknown-tunnel", "%s", av[i], A_END); |
37941236 | 942 | goto fail; |
42da2a58 | 943 | } |
944 | if (mystrieq(av[i], tunnels[j]->name)) { | |
de014da6 | 945 | add->peer.tops = tunnels[j]; |
42da2a58 | 946 | break; |
947 | } | |
948 | } | |
0ba8de86 | 949 | } else if (mystrieq(av[i], "-keepalive")) { |
950 | long t; | |
951 | if (!av[++i]) goto bad_syntax; | |
952 | if ((t = a_parsetime(av[i])) < 0) { | |
f43df819 | 953 | a_fail(a, "bad-time-spec", "%s", av[i], A_END); |
37941236 | 954 | goto fail; |
0ba8de86 | 955 | } |
de014da6 | 956 | add->peer.t_ka = t; |
42da2a58 | 957 | } else if (mystrieq(av[i], "--")) { |
958 | i++; | |
959 | break; | |
960 | } else | |
961 | break; | |
0ba8de86 | 962 | i++; |
42da2a58 | 963 | } |
964 | ||
37941236 | 965 | /* --- Crank up the resolver --- */ |
de014da6 | 966 | |
37941236 | 967 | a_resolve(a, &add->r, tag, a_doadd, ac - i, av + i); |
42da2a58 | 968 | return; |
969 | ||
37941236 | 970 | /* --- Clearing up --- */ |
971 | ||
42da2a58 | 972 | bad_syntax: |
f43df819 | 973 | a_fail(a, "bad-syntax", "add", "PEER [OPTIONS] ADDR ...", A_END); |
de014da6 | 974 | fail: |
37941236 | 975 | xfree(add->peer.name); |
976 | xfree(add); | |
0ba8de86 | 977 | return; |
978 | } | |
979 | ||
980 | /*----- Ping --------------------------------------------------------------*/ | |
981 | ||
de014da6 | 982 | /* --- @a_pingcancel@ --- * |
983 | * | |
984 | * Arguments: @admin_bgop *bg@ = background operation block | |
985 | * | |
986 | * Returns: --- | |
987 | * | |
988 | * Use: Cancels a running ping. | |
989 | */ | |
990 | ||
991 | static void a_pingcancel(admin_bgop *bg) | |
992 | { | |
993 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 994 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 995 | p_pingdone(&pg->ping, PING_NONOTIFY); |
996 | } | |
997 | ||
0ba8de86 | 998 | /* --- @a_pong@ --- * |
999 | * | |
1000 | * Arguments: @int rc@ = return code | |
de014da6 | 1001 | * @void *v@ = ping operation block |
0ba8de86 | 1002 | * |
1003 | * Returns: --- | |
1004 | * | |
1005 | * Use: Collects what happened to a ping message. | |
1006 | */ | |
1007 | ||
de014da6 | 1008 | static void a_pong(int rc, void *v) |
0ba8de86 | 1009 | { |
de014da6 | 1010 | admin_pingop *pg = v; |
0ba8de86 | 1011 | struct timeval tv; |
1012 | double millis; | |
1013 | ||
0ba8de86 | 1014 | switch (rc) { |
1015 | case PING_OK: | |
1016 | gettimeofday(&tv, 0); | |
de014da6 | 1017 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1018 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1019 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1020 | a_bgok(&pg->bg); |
0ba8de86 | 1021 | break; |
1022 | case PING_TIMEOUT: | |
f43df819 | 1023 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1024 | a_bgok(&pg->bg); |
0ba8de86 | 1025 | break; |
1026 | case PING_PEERDIED: | |
f43df819 | 1027 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1028 | a_bgok(&pg->bg); |
0ba8de86 | 1029 | break; |
1030 | default: | |
1031 | abort(); | |
1032 | } | |
060ca767 | 1033 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1034 | a_bgrelease(&pg->bg); |
0ba8de86 | 1035 | } |
1036 | ||
1037 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1038 | * | |
1039 | * Arguments: @admin *a@ = connection which requested the ping | |
1040 | * @unsigned ac@ = argument count | |
1041 | * @char *av[]@ = pointer to the argument list | |
1042 | * | |
1043 | * Returns: --- | |
1044 | * | |
1045 | * Use: Pings a peer. | |
1046 | */ | |
1047 | ||
1048 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1049 | const char *cmd, unsigned msg) | |
1050 | { | |
1051 | long t = T_PING; | |
1052 | int i; | |
1053 | peer *p; | |
de014da6 | 1054 | admin_pingop *pg = 0; |
1055 | const char *tag = 0; | |
0ba8de86 | 1056 | |
1057 | i = 0; | |
1058 | for (;;) { | |
1059 | if (!av[i]) | |
1060 | goto bad_syntax; | |
de014da6 | 1061 | if (mystrieq(av[i], "-background")) { |
1062 | if (!av[++i]) goto bad_syntax; | |
1063 | tag = av[i]; | |
1064 | } else if (mystrieq(av[i], "-timeout")) { | |
0ba8de86 | 1065 | if (!av[++i]) goto bad_syntax; |
1066 | if ((t = a_parsetime(av[i])) < 0) { | |
f43df819 | 1067 | a_fail(a, "bad-time-spec", "%s", av[i], A_END); |
0ba8de86 | 1068 | return; |
1069 | } | |
1070 | } else if (mystrieq(av[i], "--")) { | |
1071 | i++; | |
1072 | break; | |
1073 | } else | |
1074 | break; | |
1075 | i++; | |
1076 | } | |
1077 | ||
1078 | if (!av[i]) goto bad_syntax; | |
37941236 | 1079 | if ((p = a_findpeer(a, av[i])) == 0) |
0ba8de86 | 1080 | return; |
de014da6 | 1081 | pg = xmalloc(sizeof(*pg)); |
1082 | gettimeofday(&pg->pingtime, 0); | |
1083 | a_bgadd(a, &pg->bg, tag, a_pingcancel); | |
060ca767 | 1084 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1085 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1086 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1087 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1088 | a_bgrelease(&pg->bg); |
1089 | } | |
0ba8de86 | 1090 | return; |
1091 | ||
1092 | bad_syntax: | |
f43df819 | 1093 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
42da2a58 | 1094 | return; |
410c8acf | 1095 | } |
1096 | ||
0ba8de86 | 1097 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1098 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1099 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1100 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1101 | |
410c8acf | 1102 | /*----- Administration commands -------------------------------------------*/ |
1103 | ||
1104 | /* --- Miscellaneous commands --- */ | |
1105 | ||
3cdc3f3a | 1106 | /* --- @traceish@ --- * |
1107 | * | |
1108 | * Arguments: @admin *a@ = connection to complain on | |
1109 | * @unsigned ac@ = number of arguments | |
1110 | * @char *av[]@ = vector of arguments | |
1111 | * @const char *what@ = what we're messing with | |
1112 | * @const trace_opt *tt@ = options table | |
1113 | * @unsigned *ff@ = where the flags are | |
1114 | * | |
1115 | * Returns: Nonzero if anything changed. | |
1116 | * | |
1117 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1118 | */ | |
410c8acf | 1119 | |
3cdc3f3a | 1120 | static int traceish(admin *a, unsigned ac, char *av[], |
1121 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1122 | { |
3cdc3f3a | 1123 | int ch = 0; |
1124 | ||
410c8acf | 1125 | if (!ac || strcmp(av[0], "?") == 0) { |
1126 | const trace_opt *t; | |
3cdc3f3a | 1127 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1128 | a_info(a, "*%c%c %s", |
1129 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1130 | } |
1131 | } else { | |
1132 | unsigned sense = 1; | |
3cdc3f3a | 1133 | unsigned f = *ff; |
1134 | const trace_opt *t; | |
410c8acf | 1135 | char *p = av[0]; |
1136 | ||
1137 | while (*p) { | |
1138 | switch (*p) { | |
1139 | case '+': sense = 1; break; | |
1140 | case '-': sense = 0; break; | |
1141 | default: | |
3cdc3f3a | 1142 | for (t = tt; t->ch; t++) { |
1143 | if (t->ch == *p) { | |
1144 | if (sense) f |= t->f; | |
1145 | else f &= ~t->f; | |
410c8acf | 1146 | goto tropt_ok; |
1147 | } | |
1148 | } | |
f43df819 | 1149 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1150 | return (0); |
410c8acf | 1151 | tropt_ok:; |
1152 | break; | |
1153 | } | |
1154 | p++; | |
1155 | } | |
3cdc3f3a | 1156 | *ff = f; |
1157 | ch = 1; | |
410c8acf | 1158 | } |
3cdc3f3a | 1159 | a_ok(a); |
1160 | return (ch); | |
1161 | } | |
1162 | ||
1163 | #ifndef NTRACE | |
1164 | ||
1165 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1166 | { | |
1167 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1168 | trace_level(tr_flags); | |
410c8acf | 1169 | } |
1170 | ||
1171 | #endif | |
1172 | ||
3cdc3f3a | 1173 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
1174 | { | |
1175 | traceish(a, ac, av, "watch", w_opts, &a->f); | |
1176 | } | |
1177 | ||
3cdc3f3a | 1178 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
1179 | const char *tag, unsigned ac, char *av[]) | |
1180 | { | |
1181 | dstr d = DSTR_INIT; | |
1182 | unsigned i; | |
1183 | ||
1184 | dstr_puts(&d, "USER"); | |
1185 | for (i = 0; i < ac; i++) | |
1186 | quotify(&d, av[i]); | |
1187 | dstr_putz(&d); | |
1188 | a_rawalert(f_and, f_eq, tag, d.buf, d.len); | |
1189 | dstr_destroy(&d); | |
1190 | a_ok(a); | |
1191 | } | |
1192 | ||
1193 | static void acmd_notify(admin *a, unsigned ac, char *av[]) | |
1194 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", ac, av); } | |
1195 | static void acmd_warn(admin *a, unsigned ac, char *av[]) | |
1196 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", ac, av); } | |
1197 | ||
410c8acf | 1198 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
1199 | { | |
f43df819 | 1200 | a_info(a, "%u", p_port(), A_END); |
3cdc3f3a | 1201 | a_ok(a); |
410c8acf | 1202 | } |
1203 | ||
410c8acf | 1204 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1205 | { | |
1206 | if (flags & F_DAEMON) | |
f43df819 | 1207 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1208 | else { |
f43df819 | 1209 | a_notify("DAEMON", A_END); |
93bee2c4 | 1210 | if (a_stdin) |
410c8acf | 1211 | a_destroy(a_stdin); |
410c8acf | 1212 | if (u_daemon()) |
f43df819 | 1213 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1214 | else { |
410c8acf | 1215 | flags |= F_DAEMON; |
3cdc3f3a | 1216 | a_ok(a); |
93bee2c4 | 1217 | } |
410c8acf | 1218 | } |
1219 | } | |
1220 | ||
1221 | static void acmd_list(admin *a, unsigned ac, char *av[]) | |
1222 | { | |
1223 | peer *p; | |
1224 | for (p = p_first(); p; p = p_next(p)) | |
f43df819 | 1225 | a_info(a, "%s", p_name(p), A_END); |
3cdc3f3a | 1226 | a_ok(a); |
410c8acf | 1227 | } |
1228 | ||
1229 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1230 | { | |
1231 | peer *p; | |
1232 | ||
37941236 | 1233 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1234 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1235 | a_ok(a); |
1236 | } | |
410c8acf | 1237 | } |
1238 | ||
64cf2223 MW |
1239 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1240 | { | |
1241 | peer *p; | |
1242 | ||
1243 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1244 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1245 | p_setifname(p, av[1]); | |
1246 | a_ok(a); | |
1247 | } | |
1248 | } | |
1249 | ||
37941236 | 1250 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1251 | { | |
1252 | buf b; | |
1253 | ||
1254 | buf_init(&b, buf_i, PKBUFSZ); | |
1255 | c_new(&b); | |
f43df819 | 1256 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1257 | a_ok(a); |
1258 | } | |
1259 | ||
1260 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1261 | { | |
1262 | base64_ctx b64; | |
1263 | buf b; | |
1264 | dstr d = DSTR_INIT; | |
1265 | ||
1266 | base64_init(&b64); | |
1267 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1268 | base64_decode(&b64, 0, 0, &d); | |
1269 | buf_init(&b, d.buf, d.len); | |
1270 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1271 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1272 | else |
1273 | a_ok(a); | |
1274 | dstr_destroy(&d); | |
1275 | } | |
1276 | ||
1277 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1278 | { | |
1279 | peer *p; | |
1280 | base64_ctx b64; | |
1281 | dstr d = DSTR_INIT; | |
1282 | ||
1283 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1284 | base64_init(&b64); | |
1285 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1286 | base64_decode(&b64, 0, 0, &d); | |
1287 | p_greet(p, d.buf, d.len); | |
1288 | dstr_destroy(&d); | |
1289 | a_ok(a); | |
1290 | } | |
1291 | } | |
1292 | ||
410c8acf | 1293 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1294 | { | |
1295 | peer *p; | |
1296 | const addr *ad; | |
1297 | ||
37941236 | 1298 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1299 | ad = p_addr(p); |
1300 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1301 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1302 | a_ok(a); |
410c8acf | 1303 | } |
1304 | } | |
1305 | ||
060ca767 | 1306 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1307 | { | |
1308 | peer *p; | |
1309 | const peerspec *ps; | |
1310 | ||
37941236 | 1311 | if ((p = a_findpeer(a, av[0])) != 0) { |
1312 | ps = p_spec(p); | |
f43df819 MW |
1313 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
1314 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); | |
37941236 | 1315 | a_ok(a); |
060ca767 | 1316 | } |
060ca767 | 1317 | } |
1318 | ||
1319 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1320 | { | |
f43df819 MW |
1321 | a_info(a, "implementation=edgeware-tripe", A_END); |
1322 | a_info(a, "version=%s", VERSION, A_END); | |
1323 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1324 | a_ok(a); |
1325 | } | |
1326 | ||
c7053da9 | 1327 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1328 | { | |
1329 | peer *p; | |
1330 | stats *st; | |
1331 | ||
37941236 | 1332 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1333 | return; |
060ca767 | 1334 | |
1335 | st = p_stats(p); | |
f43df819 MW |
1336 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1337 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1338 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
1339 | a_info(a, "packets-in=%lu bytes-in=%lu", st->n_in, st->sz_in, A_END); | |
060ca767 | 1340 | a_info(a, "packets-out=%lu bytes-out=%lu", |
f43df819 | 1341 | st->n_out, st->sz_out, A_END); |
060ca767 | 1342 | a_info(a, "keyexch-packets-in=%lu keyexch-bytes-in=%lu", |
f43df819 | 1343 | st->n_kxin, st->sz_kxin, A_END); |
060ca767 | 1344 | a_info(a, "keyexch-packets-out=%lu keyexch-bytes-out=%lu", |
f43df819 | 1345 | st->n_kxout, st->sz_kxout, A_END); |
060ca767 | 1346 | a_info(a, "ip-packets-in=%lu ip-bytes-in=%lu", |
f43df819 | 1347 | st->n_ipin, st->sz_ipin, A_END); |
060ca767 | 1348 | a_info(a, "ip-packets-out=%lu ip-bytes-out=%lu", |
f43df819 MW |
1349 | st->n_ipout, st->sz_ipout, A_END); |
1350 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); | |
060ca767 | 1351 | a_ok(a); |
c7053da9 | 1352 | } |
1353 | ||
410c8acf | 1354 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1355 | { | |
1356 | peer *p; | |
37941236 | 1357 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1358 | p_destroy(p); |
3cdc3f3a | 1359 | a_ok(a); |
410c8acf | 1360 | } |
1361 | } | |
1362 | ||
0ba8de86 | 1363 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1364 | { | |
1365 | peer *p; | |
37941236 | 1366 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1367 | kx_start(&p->kx, 1); |
0ba8de86 | 1368 | a_ok(a); |
1369 | } | |
1370 | } | |
1371 | ||
de014da6 | 1372 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1373 | { p_keyreload(); a_ok(a); } | |
1374 | ||
410c8acf | 1375 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1376 | { | |
f43df819 | 1377 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1378 | a_ok(a); |
410c8acf | 1379 | a_quit(); |
1380 | } | |
1381 | ||
3cdc3f3a | 1382 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1383 | { | |
f43df819 | 1384 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1385 | a_ok(a); |
1386 | } | |
1387 | ||
42da2a58 | 1388 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1389 | { | |
1390 | int i; | |
1391 | for (i = 0; tunnels[i]; i++) | |
f43df819 | 1392 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1393 | a_ok(a); |
1394 | } | |
1395 | ||
410c8acf | 1396 | /* --- The command table and help --- */ |
1397 | ||
1398 | typedef struct acmd { | |
1399 | const char *name; | |
1400 | const char *help; | |
1401 | unsigned argmin, argmax; | |
1402 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1403 | } acmd; | |
1404 | ||
1405 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1406 | ||
1407 | static const acmd acmdtab[] = { | |
f43df819 MW |
1408 | { "add", "PEER [OPTIONS] ADDR ...", 2, 0xffff, acmd_add }, |
1409 | { "addr", "PEER", 1, 1, acmd_addr }, | |
1410 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, | |
1411 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1412 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1413 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1414 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1415 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1416 | { "help", 0, 0, 0, acmd_help }, | |
1417 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
1418 | { "kill", "PEER", 1, 1, acmd_kill }, | |
1419 | { "list", 0, 0, 0, acmd_list }, | |
1420 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1421 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1422 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1423 | { "port", 0, 0, 0, acmd_port }, | |
1424 | { "quit", 0, 0, 0, acmd_quit }, | |
1425 | { "reload", 0, 0, 0, acmd_reload }, | |
1426 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1427 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
f43df819 | 1428 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1429 | #ifndef NTRACE |
f43df819 | 1430 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1431 | #endif |
f43df819 MW |
1432 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1433 | { "version", 0, 0, 0, acmd_version }, | |
1434 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
1435 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, | |
410c8acf | 1436 | { 0, 0, 0, 0, 0 } |
1437 | }; | |
1438 | ||
1439 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1440 | { | |
1441 | const acmd *c; | |
f43df819 MW |
1442 | for (c = acmdtab; c->name; c++) { |
1443 | if (c->help) | |
1444 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
1445 | else | |
1446 | a_info(a, "%s", c->name, A_END); | |
1447 | } | |
3cdc3f3a | 1448 | a_ok(a); |
410c8acf | 1449 | } |
1450 | ||
1451 | /*----- Connection handling -----------------------------------------------*/ | |
1452 | ||
c511e1f9 | 1453 | /* --- @a_destroypending@ --- * |
410c8acf | 1454 | * |
c511e1f9 | 1455 | * Arguments: --- |
fd3cf232 | 1456 | * |
1457 | * Returns: --- | |
1458 | * | |
c511e1f9 | 1459 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 1460 | */ |
1461 | ||
c511e1f9 | 1462 | static void a_destroypending(void) |
410c8acf | 1463 | { |
c511e1f9 | 1464 | admin *a, *aa; |
de014da6 | 1465 | admin_bgop *bg, *bbg; |
de014da6 | 1466 | |
c511e1f9 | 1467 | /* --- Destroy connections marked as pending --- */ |
fd3cf232 | 1468 | |
c511e1f9 MW |
1469 | for (a = a_dead; a; a = aa) { |
1470 | aa = a->next; | |
1471 | assert(a->f & AF_DEAD); | |
1472 | ||
1473 | /* --- Report what we're doing --- */ | |
1474 | ||
1475 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", | |
1476 | a->seq); ) | |
1477 | ||
1478 | /* --- Abort any background jobs in progress --- */ | |
1479 | ||
1480 | for (bg = a->bg; bg; bg = bbg) { | |
1481 | bbg = bg->next; | |
1482 | bg->cancel(bg); | |
1483 | if (bg->tag) xfree(bg->tag); | |
1484 | xfree(bg); | |
1485 | } | |
1486 | ||
1487 | /* --- Close file descriptors and selectory --- */ | |
1488 | ||
1489 | selbuf_destroy(&a->b); | |
1490 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
1491 | close(a->w.fd); | |
1492 | if (a_stdin == a) a_stdin = 0; | |
1493 | ||
1494 | /* --- Done --- */ | |
1495 | ||
1496 | DESTROY(a); | |
410c8acf | 1497 | } |
410c8acf | 1498 | |
c511e1f9 | 1499 | /* --- All pending destruction completed --- */ |
060ca767 | 1500 | |
c511e1f9 | 1501 | a_dead = 0; |
060ca767 | 1502 | } |
1503 | ||
fd3cf232 | 1504 | /* --- @a_destroy@ --- * |
1505 | * | |
1506 | * Arguments: @admin *a@ = pointer to an admin block | |
1507 | * | |
1508 | * Returns: --- | |
1509 | * | |
1510 | * Use: Destroys an admin block. This requires a certain amount of | |
1511 | * care. | |
1512 | */ | |
1513 | ||
de014da6 | 1514 | static void freequeue(oqueue *q) |
1515 | { | |
1516 | obuf *o, *oo; | |
1517 | ||
1518 | for (o = q->hd; o; o = oo) { | |
1519 | oo = o->next; | |
1520 | xfree(o); | |
1521 | } | |
1522 | q->hd = q->tl = 0; | |
1523 | } | |
1524 | ||
fd3cf232 | 1525 | static void a_destroy(admin *a) |
1526 | { | |
fd3cf232 | 1527 | if (a->f & AF_DEAD) |
1528 | return; | |
1529 | ||
c511e1f9 MW |
1530 | if (a->next) a->next->prev = a->prev; |
1531 | if (a->prev) a->prev->next = a->next; | |
1532 | else admins = a->next; | |
fd3cf232 | 1533 | |
c511e1f9 | 1534 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 1535 | freequeue(&a->out); |
fd3cf232 | 1536 | |
c511e1f9 MW |
1537 | a->f |= AF_DEAD; |
1538 | a->next = a_dead; | |
1539 | a_dead = a; | |
fd3cf232 | 1540 | |
c511e1f9 | 1541 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 1542 | } |
1543 | ||
410c8acf | 1544 | /* --- @a_line@ --- * |
1545 | * | |
1546 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 1547 | * @size_t len@ = length of the line |
410c8acf | 1548 | * @void *vp@ = pointer to my admin block |
1549 | * | |
1550 | * Returns: --- | |
1551 | * | |
1552 | * Use: Handles a line of input. | |
1553 | */ | |
1554 | ||
3008eabf | 1555 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 1556 | { |
1557 | admin *a = vp; | |
1558 | const acmd *c; | |
3cdc3f3a | 1559 | char *av[16]; |
410c8acf | 1560 | size_t ac; |
1561 | ||
8d0c7a83 | 1562 | TIMER; |
fd3cf232 | 1563 | if (a->f & AF_DEAD) |
1564 | return; | |
410c8acf | 1565 | if (!p) { |
de014da6 | 1566 | if (!a->bg) |
1567 | a_destroy(a); | |
1568 | else { | |
1569 | a->f |= AF_CLOSE; | |
1570 | selbuf_disable(&a->b); | |
1571 | } | |
410c8acf | 1572 | return; |
1573 | } | |
3cdc3f3a | 1574 | ac = str_qsplit(p, av, 16, 0, STRF_QUOTE); |
410c8acf | 1575 | if (!ac) |
1576 | return; | |
410c8acf | 1577 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 1578 | if (mystrieq(av[0], c->name)) { |
410c8acf | 1579 | ac--; |
f43df819 MW |
1580 | if (c->argmin > ac || ac > c->argmax) { |
1581 | if (!c->help) | |
1582 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
1583 | else | |
1584 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); | |
c511e1f9 | 1585 | } else |
410c8acf | 1586 | c->func(a, ac, av + 1); |
1587 | return; | |
1588 | } | |
1589 | } | |
f43df819 | 1590 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 1591 | } |
1592 | ||
1593 | /* --- @a_create@ --- * | |
1594 | * | |
1595 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 1596 | * @unsigned f@ = initial flags to set |
410c8acf | 1597 | * |
1598 | * Returns: --- | |
1599 | * | |
1600 | * Use: Creates a new admin connection. | |
1601 | */ | |
1602 | ||
3cdc3f3a | 1603 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 1604 | { |
1605 | admin *a = CREATE(admin); | |
3cdc3f3a | 1606 | |
93bee2c4 | 1607 | T( static unsigned seq = 0; |
1608 | a->seq = seq++; ) | |
410c8acf | 1609 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 1610 | a->bg = 0; |
042d5c20 | 1611 | a->ref = 0; |
3cdc3f3a | 1612 | a->f = f; |
de014da6 | 1613 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 1614 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 1615 | if (fd_out != fd_in) |
fd3cf232 | 1616 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 1617 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 1618 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 1619 | a->out.hd = a->out.tl = 0; |
410c8acf | 1620 | a->next = admins; |
1621 | a->prev = 0; | |
de014da6 | 1622 | if (admins) admins->prev = a; |
410c8acf | 1623 | admins = a; |
1624 | } | |
1625 | ||
1626 | /* --- @a_accept@ --- * | |
1627 | * | |
1628 | * Arguments: @int fd@ = file descriptor to accept | |
1629 | * @unsigned mode@ = what to do | |
1630 | * @void *v@ = uninteresting pointer | |
1631 | * | |
1632 | * Returns: --- | |
1633 | * | |
1634 | * Use: Accepts a new admin connection. | |
1635 | */ | |
1636 | ||
1637 | static void a_accept(int fd, unsigned mode, void *v) | |
1638 | { | |
1639 | int nfd; | |
1640 | struct sockaddr_un sun; | |
1641 | size_t sz = sizeof(sun); | |
1642 | ||
1643 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 1644 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
1645 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 1646 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 1647 | return; |
1648 | } | |
3cdc3f3a | 1649 | a_create(nfd, nfd, 0); |
410c8acf | 1650 | } |
1651 | ||
c511e1f9 MW |
1652 | /* --- @a_preselect@ --- * |
1653 | * | |
1654 | * Arguments: --- | |
1655 | * | |
1656 | * Returns: --- | |
1657 | * | |
1658 | * Use: Informs the admin module that we're about to select again, | |
1659 | * and that it should do cleanup things it has delayed until a | |
1660 | * `safe' time. | |
1661 | */ | |
1662 | ||
1663 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
1664 | ||
410c8acf | 1665 | /* --- @a_daemon@ --- * |
1666 | * | |
1667 | * Arguments: --- | |
1668 | * | |
1669 | * Returns: --- | |
1670 | * | |
1671 | * Use: Informs the admin module that it's a daemon. | |
1672 | */ | |
1673 | ||
1674 | void a_daemon(void) | |
1675 | { | |
1676 | flags |= F_DAEMON; | |
1677 | } | |
1678 | ||
1679 | /* --- @a_init@ --- * | |
1680 | * | |
1681 | * Arguments: @const char *name@ = socket name to create | |
1682 | * | |
1683 | * Returns: --- | |
1684 | * | |
1685 | * Use: Creates the admin listening socket. | |
1686 | */ | |
1687 | ||
1688 | void a_init(const char *name) | |
1689 | { | |
1690 | int fd; | |
1691 | int n = 5; | |
1692 | struct sockaddr_un sun; | |
1693 | struct sigaction sa; | |
1694 | size_t sz; | |
1695 | ||
1696 | /* --- Set up the socket address --- */ | |
1697 | ||
1698 | sz = strlen(name) + 1; | |
1699 | if (sz > sizeof(sun.sun_path)) | |
1700 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
1701 | BURN(sun); | |
1702 | sun.sun_family = AF_UNIX; | |
1703 | memcpy(sun.sun_path, name, sz); | |
1704 | sz += offsetof(struct sockaddr_un, sun_path); | |
1705 | ||
1706 | /* --- Attempt to bind to the socket --- */ | |
1707 | ||
1708 | umask(0077); | |
1709 | again: | |
1710 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
1711 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
1712 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
1713 | struct stat st; | |
1714 | int e = errno; | |
1715 | if (errno != EADDRINUSE) { | |
1716 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
1717 | sun.sun_path, strerror(e)); | |
1718 | } | |
1719 | if (!n) | |
1720 | die(EXIT_FAILURE, "too many retries; giving up"); | |
1721 | n--; | |
1722 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
1723 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
1724 | sun.sun_path); | |
1725 | } | |
1726 | if (errno != ECONNREFUSED) | |
1727 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
1728 | if (stat(sun.sun_path, &st)) { | |
1729 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
1730 | sun.sun_path, strerror(errno)); | |
1731 | } | |
1732 | if (!S_ISSOCK(st.st_mode)) | |
1733 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 1734 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 1735 | unlink(sun.sun_path); |
1736 | close(fd); | |
1737 | goto again; | |
1738 | } | |
1739 | chmod(sun.sun_path, 0600); | |
1740 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
1741 | if (listen(fd, 5)) | |
1742 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
1743 | ||
1744 | /* --- Listen to the socket --- */ | |
1745 | ||
1746 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
1747 | sel_addfile(&sock); | |
1748 | sockname = name; | |
1749 | bres_init(&sel); | |
1750 | T( trace_custom(a_trace, 0); | |
1751 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
1752 | flags |= F_INIT; | |
1753 | ||
1754 | /* --- Set up signal handlers --- */ | |
1755 | ||
1756 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
1757 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 1758 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 1759 | sigaction(SIGINT, 0, &sa); |
1760 | if (sa.sa_handler != SIG_IGN) | |
1761 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
1762 | } | |
1763 | ||
1764 | /*----- That's all, folks -------------------------------------------------*/ |