Commit | Line | Data |
---|---|---|
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; | |
65 | static sel_file sock; | |
66 | static const char *sockname; | |
67 | static unsigned flags = 0; | |
68 | static admin *a_stdin = 0; | |
69 | static sig s_term, s_int, s_hup; | |
70 | ||
71 | #define F_DAEMON 1u | |
72 | #define F_INIT 2u | |
73 | ||
74 | #define T_RESOLVE SEC(30) | |
0ba8de86 | 75 | #define T_PING SEC(5) |
410c8acf | 76 | |
fd3cf232 | 77 | static void a_destroy(admin */*a*/); |
78 | static void a_lock(admin */*a*/); | |
79 | static void a_unlock(admin */*a*/); | |
80 | ||
060ca767 | 81 | #define BOOL(x) ((x) ? "t" : "nil") |
82 | ||
fd3cf232 | 83 | /*----- Output functions --------------------------------------------------*/ |
84 | ||
85 | /* --- @trywrite@ --- * | |
86 | * | |
87 | * Arguments: @admin *a@ = pointer to an admin block | |
88 | * @const char *p@ = pointer to buffer to write | |
89 | * @size_t sz@ = size of data to write | |
90 | * | |
91 | * Returns: The number of bytes written, or less than zero on error. | |
92 | * | |
93 | * Use: Attempts to write data to a client. | |
94 | */ | |
95 | ||
96 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
97 | { | |
98 | ssize_t n, done = 0; | |
99 | ||
100 | again: | |
101 | if (!sz) | |
102 | return (done); | |
103 | n = write(a->w.fd, p, sz); | |
104 | if (n > 0) { | |
105 | done += n; | |
106 | p += n; | |
107 | sz -= n; | |
108 | goto again; | |
109 | } | |
110 | if (n < 0) { | |
111 | if (errno == EINTR) | |
112 | goto again; | |
113 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
114 | a_destroy(a); | |
f43df819 | 115 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 116 | return (-1); |
117 | } | |
118 | } | |
119 | return (done); | |
120 | } | |
121 | ||
de014da6 | 122 | /* --- @doqueue@ -- * |
fd3cf232 | 123 | * |
de014da6 | 124 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 125 | * @const char *p@ = pointer to buffer to write |
de014da6 | 126 | * @size_t sz@ = size of buffer |
fd3cf232 | 127 | * |
de014da6 | 128 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 129 | * |
de014da6 | 130 | * Use: Queues data to be written later. |
fd3cf232 | 131 | */ |
132 | ||
de014da6 | 133 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 134 | { |
fd3cf232 | 135 | obuf *o; |
de014da6 | 136 | int rc = 0; |
137 | size_t n; | |
fd3cf232 | 138 | |
de014da6 | 139 | o = q->tl; |
fd3cf232 | 140 | if (!o) |
de014da6 | 141 | rc = 1; |
fd3cf232 | 142 | else if (o->p_in < o->buf + OBUFSZ) |
143 | goto noalloc; | |
144 | ||
145 | do { | |
146 | o = xmalloc(sizeof(obuf)); | |
147 | o->next = 0; | |
148 | o->p_in = o->p_out = o->buf; | |
de014da6 | 149 | if (q->tl) |
150 | q->tl->next = o; | |
fd3cf232 | 151 | else |
de014da6 | 152 | q->hd = o; |
153 | q->tl = o; | |
fd3cf232 | 154 | |
155 | noalloc: | |
156 | n = o->buf + OBUFSZ - o->p_in; | |
157 | if (n > sz) | |
158 | n = sz; | |
159 | memcpy(o->p_in, p, n); | |
160 | o->p_in += n; | |
161 | p += n; | |
162 | sz -= n; | |
163 | } while (sz); | |
de014da6 | 164 | |
165 | return (rc); | |
166 | } | |
167 | ||
168 | /* --- @dosend@ --- * | |
169 | * | |
170 | * Arguemnts: @admin *a@ = pointer to an admin block | |
171 | * @const char *p@ = pointer to buffer to write | |
172 | * @size_t sz@ = size of data to write | |
173 | * | |
174 | * Returns: --- | |
175 | * | |
176 | * Use: Sends data to an admin client. | |
177 | */ | |
178 | ||
179 | static void dosend(admin *a, const char *p, size_t sz) | |
180 | { | |
181 | ssize_t n; | |
182 | ||
183 | if (a->f & AF_DEAD) | |
184 | return; | |
185 | if (!a->out.hd) { | |
186 | if ((n = trywrite(a, p, sz)) < 0) | |
187 | return; | |
188 | p += n; | |
189 | sz -= n; | |
190 | if (!sz) | |
191 | return; | |
192 | } | |
193 | if (doqueue(&a->out, p, sz)) | |
194 | sel_addfile(&a->w); | |
fd3cf232 | 195 | } |
196 | ||
197 | /* --- @a_flush@ --- * | |
198 | * | |
199 | * Arguments: @int fd@ = file descriptor | |
200 | * @unsigned mode@ = what's happening | |
201 | * @void *v@ = pointer to my admin block | |
202 | * | |
203 | * Returns: --- | |
204 | * | |
205 | * Use: Flushes buffers when a client is ready to read again. | |
206 | */ | |
207 | ||
208 | static void a_flush(int fd, unsigned mode, void *v) | |
209 | { | |
210 | admin *a = v; | |
211 | obuf *o, *oo; | |
212 | ssize_t n; | |
213 | ||
de014da6 | 214 | o = a->out.hd; |
fd3cf232 | 215 | while (o) { |
216 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
217 | return; | |
218 | o->p_out += n; | |
219 | if (o->p_in < o->p_out) | |
220 | break; | |
221 | oo = o; | |
222 | o = o->next; | |
223 | xfree(oo); | |
224 | } | |
de014da6 | 225 | a->out.hd = o; |
fd3cf232 | 226 | if (!o) { |
de014da6 | 227 | a->out.tl = 0; |
fd3cf232 | 228 | sel_rmfile(&a->w); |
229 | } | |
230 | } | |
231 | ||
410c8acf | 232 | /*----- Utility functions -------------------------------------------------*/ |
233 | ||
f43df819 MW |
234 | /* --- @quotify@ --- * |
235 | * | |
236 | * Arguments: @dstr *d@ = where to write the answer | |
237 | * @const char *p@ = string to quotify | |
238 | * | |
239 | * Returns: --- | |
240 | * | |
241 | * Use: Quotes the given string if necessary, according to our | |
242 | * quoting rules. | |
243 | */ | |
244 | ||
245 | static void quotify(dstr *d, const char *p) | |
246 | { | |
247 | if (d->len) | |
248 | dstr_putc(d, ' '); | |
249 | if (*p && !p[strcspn(p, "\"' \t\n\v")]) | |
250 | dstr_puts(d, p); | |
251 | else { | |
252 | dstr_putc(d, '\"'); | |
253 | while (*p) { | |
254 | if (*p == '\\' || *p == '\"') | |
255 | dstr_putc(d, '\\'); | |
256 | dstr_putc(d, *p++); | |
257 | } | |
258 | dstr_putc(d, '\"'); | |
259 | } | |
260 | } | |
261 | ||
262 | /* --- @a_vformat@ --- * | |
263 | * | |
264 | * Arguments: @dstr *d@ = where to leave the formatted message | |
265 | * @const char *fmt@ = pointer to format string | |
266 | * @va_list ap@ = arguments in list | |
267 | * | |
268 | * Returns: --- | |
269 | * | |
270 | * Use: Main message token formatting driver. | |
271 | */ | |
272 | ||
273 | static void a_vformat(dstr *d, const char *fmt, va_list ap) | |
274 | { | |
275 | dstr dd = DSTR_INIT; | |
276 | ||
277 | while (fmt) { | |
278 | if (*fmt == '*') { | |
279 | dstr_putc(d, ' '); | |
280 | dstr_vputf(d, fmt + 1, &ap); | |
281 | } else if (*fmt == '?') { | |
282 | if (strcmp(fmt, "?ADDR") == 0) { | |
283 | const addr *a = va_arg(ap, const addr *); | |
284 | switch (a->sa.sa_family) { | |
285 | case AF_INET: | |
286 | quotify(d, "INET"); | |
287 | quotify(d, inet_ntoa(a->sin.sin_addr)); | |
288 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); | |
289 | break; | |
290 | default: | |
291 | abort(); | |
292 | } | |
293 | } else if (strcmp(fmt, "?B64") == 0) { | |
294 | const octet *p = va_arg(ap, const octet *); | |
295 | size_t n = va_arg(ap, size_t); | |
296 | base64_ctx b64; | |
297 | dstr_putc(d, ' '); | |
298 | base64_init(&b64); | |
299 | b64.indent = ""; | |
300 | b64.maxline = 0; | |
301 | base64_encode(&b64, p, n, d); | |
302 | base64_encode(&b64, 0, 0, d); | |
303 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
304 | } else if (strcmp(fmt, "?PEER") == 0) | |
305 | quotify(d, p_name(va_arg(ap, peer *))); | |
306 | else if (strcmp(fmt, "?ERRNO") == 0) { | |
307 | dstr_putf(d, " E%d", errno); | |
308 | quotify(d, strerror(errno)); | |
309 | } else | |
310 | abort(); | |
311 | } else { | |
312 | if (*fmt == '!') fmt++; | |
313 | DRESET(&dd); | |
314 | dstr_vputf(&dd, fmt, &ap); | |
315 | quotify(d, dd.buf); | |
316 | } | |
317 | fmt = va_arg(ap, const char *); | |
318 | } | |
319 | ||
320 | dstr_destroy(&dd); | |
321 | } | |
322 | ||
3cdc3f3a | 323 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 324 | * |
325 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 326 | * @const char *status@ = status code to report |
327 | * @const char *tag@ = tag string, or null | |
410c8acf | 328 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 329 | * @va_list ap@ = arguments in list |
410c8acf | 330 | * @...@ = other arguments |
331 | * | |
332 | * Returns: --- | |
333 | * | |
334 | * Use: Sends a message to an admin connection. | |
335 | */ | |
336 | ||
de014da6 | 337 | static void a_vwrite(admin *a, const char *status, const char *tag, |
338 | const char *fmt, va_list ap) | |
410c8acf | 339 | { |
410c8acf | 340 | dstr d = DSTR_INIT; |
f98df549 | 341 | |
de014da6 | 342 | if (tag) dstr_puts(&d, "BG"); |
343 | dstr_puts(&d, status); | |
f43df819 MW |
344 | if (tag) quotify(&d, tag); |
345 | a_vformat(&d, fmt, ap); | |
3cdc3f3a | 346 | dstr_putc(&d, '\n'); |
347 | dosend(a, d.buf, d.len); | |
348 | dstr_destroy(&d); | |
349 | } | |
350 | ||
de014da6 | 351 | static void a_write(admin *a, const char *status, const char *tag, |
352 | const char *fmt, ...) | |
3cdc3f3a | 353 | { |
354 | va_list ap; | |
f98df549 | 355 | |
410c8acf | 356 | va_start(ap, fmt); |
de014da6 | 357 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 358 | va_end(ap); |
3cdc3f3a | 359 | } |
360 | ||
361 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
362 | * | |
363 | * Arguments: @admin *a@ = connection | |
364 | * @const char *fmt@ = format string | |
365 | * @...@ = other arguments | |
366 | * | |
367 | * Returns: --- | |
368 | * | |
369 | * Use: Convenience functions for @a_write@. | |
370 | */ | |
371 | ||
f43df819 | 372 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 373 | |
374 | static void a_info(admin *a, const char *fmt, ...) | |
375 | { | |
376 | va_list ap; | |
f98df549 | 377 | |
3cdc3f3a | 378 | va_start(ap, fmt); |
de014da6 | 379 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 380 | va_end(ap); |
381 | } | |
382 | ||
383 | static void a_fail(admin *a, const char *fmt, ...) | |
384 | { | |
385 | va_list ap; | |
f98df549 | 386 | |
3cdc3f3a | 387 | va_start(ap, fmt); |
de014da6 | 388 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 389 | va_end(ap); |
390 | } | |
391 | ||
392 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
393 | * | |
394 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 395 | * @const char *status@ = status string |
3cdc3f3a | 396 | * @const char *fmt@ = pointer to format string |
de014da6 | 397 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 398 | * @size_t sz@ = size of raw string |
399 | * @va_list ap@ = arguments in list | |
400 | * @...@ = other arguments | |
401 | * | |
402 | * Returns: --- | |
403 | * | |
404 | * Use: Write a message to all admin connections matched by the given | |
405 | * filter. | |
406 | */ | |
407 | ||
de014da6 | 408 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 409 | const char *p, size_t sz) |
410 | { | |
411 | admin *a, *aa; | |
412 | dstr d = DSTR_INIT; | |
413 | ||
414 | if (!(flags & F_INIT)) | |
415 | return; | |
de014da6 | 416 | dstr_puts(&d, status); |
417 | if (p) { | |
418 | dstr_putc(&d, ' '); | |
3cdc3f3a | 419 | dstr_putm(&d, p, sz); |
de014da6 | 420 | } |
3cdc3f3a | 421 | dstr_putc(&d, '\n'); |
422 | p = d.buf; | |
423 | sz = d.len; | |
424 | for (a = admins; a; a = aa) { | |
425 | aa = a->next; | |
426 | if ((a->f & f_and) == f_eq) | |
427 | dosend(a, d.buf, d.len); | |
428 | } | |
410c8acf | 429 | dstr_destroy(&d); |
430 | } | |
431 | ||
b9adb829 | 432 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 433 | const char *fmt, va_list ap) |
434 | { | |
435 | dstr d = DSTR_INIT; | |
436 | ||
437 | if (!(flags & F_INIT)) | |
438 | return; | |
f43df819 | 439 | a_vformat(&d, fmt, ap); |
b9adb829 | 440 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 441 | dstr_destroy(&d); |
442 | } | |
443 | ||
444 | #if 0 /*unused*/ | |
b9adb829 | 445 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 446 | const char *fmt, ...) |
447 | { | |
448 | va_list ap; | |
f98df549 | 449 | |
3cdc3f3a | 450 | va_start(ap, fmt); |
b9adb829 | 451 | a_valert(f_and, f_eq, status, fmt, ap); |
3cdc3f3a | 452 | va_end(ap); |
453 | } | |
454 | #endif | |
455 | ||
410c8acf | 456 | /* --- @a_warn@ --- * |
457 | * | |
458 | * Arguments: @const char *fmt@ = pointer to format string | |
459 | * @...@ = other arguments | |
460 | * | |
461 | * Returns: --- | |
462 | * | |
463 | * Use: Informs all admin connections of a warning. | |
464 | */ | |
465 | ||
466 | void a_warn(const char *fmt, ...) | |
467 | { | |
468 | va_list ap; | |
410c8acf | 469 | |
410c8acf | 470 | va_start(ap, fmt); |
3cdc3f3a | 471 | if (flags & F_INIT) |
472 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 473 | else { |
f43df819 | 474 | dstr d = DSTR_INIT; |
3cdc3f3a | 475 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
476 | a_vformat(&d, fmt, ap); |
477 | dstr_putc(&d, '\n'); | |
478 | dstr_write(&d, stderr); | |
479 | dstr_destroy(&d); | |
410c8acf | 480 | } |
3cdc3f3a | 481 | va_end(ap); |
410c8acf | 482 | } |
483 | ||
484 | /* --- @a_trace@ --- * | |
485 | * | |
486 | * Arguments: @const char *p@ = pointer to a buffer | |
487 | * @size_t sz@ = size of the buffer | |
488 | * @void *v@ = uninteresting pointer | |
489 | * | |
490 | * Returns: --- | |
491 | * | |
3cdc3f3a | 492 | * Use: Custom trace output handler. Sends trace messages to |
493 | * interested admin connections. | |
410c8acf | 494 | */ |
495 | ||
496 | #ifndef NTRACE | |
497 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 498 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 499 | #endif |
500 | ||
3cdc3f3a | 501 | /* --- @a_notify@ --- * |
502 | * | |
503 | * Arguments: @const char *fmt@ = pointer to format string | |
504 | * @...@ = other arguments | |
505 | * | |
506 | * Returns: --- | |
507 | * | |
508 | * Use: Sends a notification to interested admin connections. | |
509 | */ | |
510 | ||
511 | void a_notify(const char *fmt, ...) | |
512 | { | |
513 | va_list ap; | |
514 | ||
515 | va_start(ap, fmt); | |
516 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
517 | va_end(ap); | |
518 | } | |
519 | ||
410c8acf | 520 | /* --- @a_quit@ --- * |
521 | * | |
522 | * Arguments: --- | |
523 | * | |
524 | * Returns: --- | |
525 | * | |
526 | * Use: Shuts things down nicely. | |
527 | */ | |
528 | ||
529 | void a_quit(void) | |
530 | { | |
42da2a58 | 531 | peer *p; |
532 | ||
410c8acf | 533 | close(sock.fd); |
534 | unlink(sockname); | |
de014da6 | 535 | while ((p = p_first()) != 0) |
536 | p_destroy(p); | |
410c8acf | 537 | exit(0); |
538 | } | |
539 | ||
540 | /* --- @a_sigdie@ --- * | |
541 | * | |
542 | * Arguments: @int sig@ = signal number | |
543 | * @void *v@ = an uninteresting argument | |
544 | * | |
545 | * Returns: --- | |
546 | * | |
547 | * Use Shuts down on receipt of a fatal signal. | |
548 | */ | |
549 | ||
550 | static void a_sigdie(int sig, void *v) | |
551 | { | |
552 | char *p; | |
553 | char buf[20]; | |
554 | ||
555 | switch (sig) { | |
556 | case SIGTERM: p = "SIGTERM"; break; | |
557 | case SIGINT: p = "SIGINT"; break; | |
558 | default: | |
3cdc3f3a | 559 | sprintf(buf, "%i", sig); |
410c8acf | 560 | p = buf; |
561 | break; | |
562 | } | |
f43df819 | 563 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 564 | a_quit(); |
565 | } | |
566 | ||
567 | /* --- @a_sighup@ --- * | |
568 | * | |
569 | * Arguments: @int sig@ = signal number | |
570 | * @void *v@ = an uninteresting argument | |
571 | * | |
572 | * Returns: --- | |
573 | * | |
574 | * Use Logs a message about SIGHUP not being useful. | |
575 | */ | |
576 | ||
577 | static void a_sighup(int sig, void *v) | |
f98df549 | 578 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 579 | |
0ba8de86 | 580 | /* --- @a_parsetime@ --- * |
581 | * | |
582 | * Arguments; @const char *p@ = time string to parse | |
583 | * | |
584 | * Returns: Time in seconds, or @< 0@ on error. | |
585 | */ | |
586 | ||
587 | static long a_parsetime(const char *p) | |
588 | { | |
589 | char *q; | |
590 | long t = strtol(p, &q, 0); | |
591 | ||
592 | switch (*q) { | |
593 | case 'd': t *= 24; | |
594 | case 'h': t *= 60; | |
595 | case 'm': t *= 60; | |
596 | case 's': if (q[1] != 0) | |
597 | default: t = -1; | |
598 | case 0: break; | |
599 | } | |
600 | return (t); | |
601 | } | |
602 | ||
37941236 | 603 | /* --- @a_findpeer@ --- * |
604 | * | |
605 | * Arguments: @admin *a@ = admin connection | |
606 | * @const char *pn@ = peer name | |
607 | * | |
608 | * Returns: The peer, or null if not there. | |
609 | * | |
610 | * Use: Finds a peer, reporting an error if it failed. | |
611 | */ | |
612 | ||
613 | static peer *a_findpeer(admin *a, const char *pn) | |
614 | { | |
615 | peer *p; | |
616 | ||
617 | if ((p = p_find(pn)) == 0) | |
f43df819 | 618 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 619 | return (p); |
620 | } | |
621 | ||
de014da6 | 622 | /*----- Backgrounded operations -------------------------------------------*/ |
623 | ||
060ca767 | 624 | #define BGTAG(bg) \ |
625 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
626 | ||
de014da6 | 627 | /* --- @a_bgrelease@ --- * |
628 | * | |
629 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
630 | * | |
631 | * Returns: --- | |
632 | * | |
633 | * Use: Removes a backgrounded operation from the queue, since | |
634 | * (presumably) it's done. | |
635 | */ | |
636 | ||
637 | static void a_bgrelease(admin_bgop *bg) | |
638 | { | |
639 | admin *a = bg->a; | |
640 | ||
060ca767 | 641 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
642 | if (bg->tag) xfree(bg->tag); | |
643 | else selbuf_enable(&a->b); | |
644 | if (bg->next) bg->next->prev = bg->prev; | |
645 | if (bg->prev) bg->prev->next = bg->next; | |
646 | else a->bg = bg->next; | |
de014da6 | 647 | xfree(bg); |
060ca767 | 648 | if (a->f & AF_CLOSE) a_destroy(a); |
649 | a_unlock(a); | |
de014da6 | 650 | } |
651 | ||
652 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
653 | * | |
654 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
655 | * @const char *fmt@ = format string | |
656 | * @...@ = other arguments | |
657 | * | |
658 | * Returns: --- | |
659 | * | |
660 | * Use: Convenience functions for @a_write@. | |
661 | */ | |
662 | ||
663 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 664 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 665 | |
666 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
667 | { | |
668 | va_list ap; | |
669 | va_start(ap, fmt); | |
670 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
671 | va_end(ap); | |
672 | } | |
673 | ||
674 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
675 | { | |
676 | va_list ap; | |
677 | va_start(ap, fmt); | |
678 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
679 | va_end(ap); | |
680 | } | |
681 | ||
682 | /* --- @a_bgadd@ --- * | |
683 | * | |
684 | * Arguments: @admin *a@ = administration connection | |
685 | * @admin_bgop *bg@ = pointer to background operation | |
686 | * @const char *tag@ = background tag, or null for foreground | |
687 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
688 | * | |
689 | * Returns: --- | |
690 | * | |
691 | * Use: Links a background job into the list. | |
692 | */ | |
693 | ||
694 | static void a_bgadd(admin *a, admin_bgop *bg, const char *tag, | |
695 | void (*cancel)(admin_bgop *)) | |
696 | { | |
697 | if (tag) | |
698 | bg->tag = xstrdup(tag); | |
699 | else { | |
700 | bg->tag = 0; | |
701 | selbuf_disable(&a->b); | |
702 | } | |
703 | bg->a = a; | |
704 | bg->cancel = cancel; | |
705 | bg->next = a->bg; | |
706 | bg->prev = 0; | |
060ca767 | 707 | if (a->bg) a->bg->prev = bg; |
de014da6 | 708 | a->bg = bg; |
060ca767 | 709 | a_lock(a); |
710 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) | |
f43df819 | 711 | if (tag) a_write(a, "DETACH", tag, A_END); |
de014da6 | 712 | } |
713 | ||
37941236 | 714 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 715 | |
37941236 | 716 | /* --- @a_resolved@ --- * |
de014da6 | 717 | * |
37941236 | 718 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
719 | * @void *v@ = pointer to resolver operation | |
de014da6 | 720 | * |
721 | * Returns: --- | |
722 | * | |
37941236 | 723 | * Use: Handles a completed name resolution. |
de014da6 | 724 | */ |
725 | ||
37941236 | 726 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 727 | { |
37941236 | 728 | admin_resop *r = v; |
729 | ||
730 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
731 | TIMER; | |
732 | if (!h) { | |
f43df819 | 733 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 734 | r->func(r, ARES_FAIL); |
735 | } else { | |
736 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
737 | r->func(r, ARES_OK); | |
738 | } | |
739 | sel_rmtimer(&r->t); | |
740 | xfree(r->addr); | |
741 | a_bgrelease(&r->bg); | |
742 | } | |
de014da6 | 743 | |
37941236 | 744 | /* --- @a_restimer@ --- * |
de014da6 | 745 | * |
37941236 | 746 | * Arguments: @struct timeval *tv@ = timer |
747 | * @void *v@ = pointer to resolver operation | |
de014da6 | 748 | * |
749 | * Returns: --- | |
750 | * | |
37941236 | 751 | * Use: Times out a resolver. |
de014da6 | 752 | */ |
753 | ||
37941236 | 754 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 755 | { |
37941236 | 756 | admin_resop *r = v; |
757 | ||
758 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 759 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 760 | r->func(r, ARES_FAIL); |
761 | bres_abort(&r->r); | |
762 | xfree(r->addr); | |
763 | a_bgrelease(&r->bg); | |
de014da6 | 764 | } |
765 | ||
37941236 | 766 | /* --- @a_rescancel@ --- * |
de014da6 | 767 | * |
37941236 | 768 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 769 | * |
770 | * Returns: --- | |
771 | * | |
37941236 | 772 | * Use: Cancels an add operation. |
de014da6 | 773 | */ |
774 | ||
37941236 | 775 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 776 | { |
37941236 | 777 | admin_resop *r = (admin_resop *)bg; |
778 | ||
779 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
780 | r->func(r, ARES_FAIL); | |
781 | sel_rmtimer(&r->t); | |
782 | xfree(r->addr); | |
783 | bres_abort(&r->r); | |
de014da6 | 784 | } |
37941236 | 785 | |
786 | /* --- @a_resolve@ --- * | |
410c8acf | 787 | * |
37941236 | 788 | * Arguments: @admin *a@ = administration connection |
789 | * @admin_resop *r@ = resolver operation to run | |
790 | * @const char *tag@ = background operation tag | |
791 | * @void (*func)(struct admin_resop *, int@ = handler function | |
792 | * @unsigned ac@ = number of remaining arguments | |
793 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 794 | * |
795 | * Returns: --- | |
796 | * | |
37941236 | 797 | * Use: Cranks up a resolver job. |
410c8acf | 798 | */ |
799 | ||
37941236 | 800 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
801 | void (*func)(struct admin_resop *, int), | |
802 | unsigned ac, char *av[]) | |
410c8acf | 803 | { |
37941236 | 804 | struct timeval tv; |
805 | unsigned long pt; | |
806 | char *p; | |
807 | int i = 0; | |
fd3cf232 | 808 | |
37941236 | 809 | /* --- Fill in the easy bits of address --- */ |
810 | ||
452bf3f6 | 811 | r->bg.tag = "<starting>"; |
37941236 | 812 | r->addr = 0; |
813 | r->func = func; | |
814 | if (mystrieq(av[i], "inet")) i++; | |
815 | if (ac - i != 2) { | |
f43df819 | 816 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS PORT", A_END); |
37941236 | 817 | goto fail; |
818 | } | |
819 | r->sa.sin.sin_family = AF_INET; | |
820 | r->sasz = sizeof(r->sa.sin); | |
821 | r->addr = xstrdup(av[i]); | |
822 | pt = strtoul(av[i + 1], &p, 0); | |
823 | if (*p) { | |
824 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
825 | if (!s) { | |
f43df819 | 826 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); |
37941236 | 827 | goto fail; |
828 | } | |
829 | pt = ntohs(s->s_port); | |
410c8acf | 830 | } |
37941236 | 831 | if (pt == 0 || pt >= 65536) { |
f43df819 | 832 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 833 | goto fail; |
834 | } | |
835 | r->sa.sin.sin_port = htons(pt); | |
836 | ||
837 | /* --- Report backgrounding --- * | |
838 | * | |
839 | * Do this for consistency of interface, even if we're going to get the | |
840 | * answer straight away. | |
841 | */ | |
842 | ||
843 | a_bgadd(a, &r->bg, tag, a_rescancel); | |
844 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", | |
845 | a->seq, BGTAG(r), r->addr); ) | |
846 | ||
847 | /* --- If the name is numeric, do it the easy way --- */ | |
848 | ||
849 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { | |
850 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
851 | func(r, ARES_OK); | |
852 | xfree(r->addr); | |
853 | a_bgrelease(&r->bg); | |
854 | return; | |
855 | } | |
856 | ||
857 | /* --- Store everything for later and crank up the resolver --- */ | |
858 | ||
859 | gettimeofday(&tv, 0); | |
860 | tv.tv_sec += T_RESOLVE; | |
861 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
862 | bres_byname(&r->r, r->addr, a_resolved, r); | |
863 | return; | |
864 | ||
865 | fail: | |
866 | func(r, ARES_FAIL); | |
867 | if (r->addr) xfree(r->addr); | |
868 | xfree(r); | |
410c8acf | 869 | } |
870 | ||
37941236 | 871 | /*----- Adding peers ------------------------------------------------------*/ |
872 | ||
873 | /* --- @a_doadd@ --- * | |
410c8acf | 874 | * |
37941236 | 875 | * Arguments: @admin_resop *r@ = resolver operation |
876 | * @int rc@ = how it worked | |
410c8acf | 877 | * |
878 | * Returns: --- | |
879 | * | |
37941236 | 880 | * Use: Handles a completed resolution. |
410c8acf | 881 | */ |
882 | ||
37941236 | 883 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 884 | { |
37941236 | 885 | admin_addop *add = (admin_addop *)r; |
886 | ||
887 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
888 | ||
889 | if (rc == ARES_OK) { | |
890 | add->peer.sasz = add->r.sasz; | |
891 | add->peer.sa = add->r.sa; | |
892 | if (p_find(add->peer.name)) | |
f43df819 | 893 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 894 | else if (!p_create(&add->peer)) |
f43df819 | 895 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 896 | else |
897 | a_bgok(&add->r.bg); | |
898 | } | |
de014da6 | 899 | |
37941236 | 900 | xfree(add->peer.name); |
410c8acf | 901 | } |
902 | ||
903 | /* --- @acmd_add@ --- * | |
904 | * | |
905 | * Arguments: @admin *a@ = connection which requested the addition | |
906 | * @unsigned ac@ = argument count | |
907 | * @char *av[]@ = pointer to the argument list | |
908 | * | |
909 | * Returns: --- | |
910 | * | |
911 | * Use: Adds a new peer. | |
912 | */ | |
913 | ||
914 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
915 | { | |
42da2a58 | 916 | unsigned i, j; |
de014da6 | 917 | const char *tag = 0; |
918 | admin_addop *add = 0; | |
410c8acf | 919 | |
0ba8de86 | 920 | /* --- Set stuff up --- */ |
921 | ||
de014da6 | 922 | add = xmalloc(sizeof(*add)); |
923 | add->peer.name = xstrdup(av[0]); | |
924 | add->peer.t_ka = 0; | |
925 | add->peer.tops = tun_default; | |
37941236 | 926 | |
927 | /* --- Make sure someone's not got there already --- */ | |
928 | ||
929 | if (p_find(av[0])) { | |
f43df819 | 930 | a_fail(a, "peer-exists", "%s", av[0], A_END); |
37941236 | 931 | goto fail; |
932 | } | |
0ba8de86 | 933 | |
42da2a58 | 934 | /* --- Parse options --- */ |
935 | ||
936 | i = 1; | |
937 | for (;;) { | |
938 | if (!av[i]) | |
939 | goto bad_syntax; | |
de014da6 | 940 | if (mystrieq(av[i], "-background")) { |
941 | if (!av[++i]) goto bad_syntax; | |
942 | tag = av[i]; | |
943 | } else if (mystrieq(av[i], "-tunnel")) { | |
0ba8de86 | 944 | if (!av[++i]) goto bad_syntax; |
42da2a58 | 945 | for (j = 0;; j++) { |
946 | if (!tunnels[j]) { | |
f43df819 | 947 | a_fail(a, "unknown-tunnel", "%s", av[i], A_END); |
37941236 | 948 | goto fail; |
42da2a58 | 949 | } |
950 | if (mystrieq(av[i], tunnels[j]->name)) { | |
de014da6 | 951 | add->peer.tops = tunnels[j]; |
42da2a58 | 952 | break; |
953 | } | |
954 | } | |
0ba8de86 | 955 | } else if (mystrieq(av[i], "-keepalive")) { |
956 | long t; | |
957 | if (!av[++i]) goto bad_syntax; | |
958 | if ((t = a_parsetime(av[i])) < 0) { | |
f43df819 | 959 | a_fail(a, "bad-time-spec", "%s", av[i], A_END); |
37941236 | 960 | goto fail; |
0ba8de86 | 961 | } |
de014da6 | 962 | add->peer.t_ka = t; |
42da2a58 | 963 | } else if (mystrieq(av[i], "--")) { |
964 | i++; | |
965 | break; | |
966 | } else | |
967 | break; | |
0ba8de86 | 968 | i++; |
42da2a58 | 969 | } |
970 | ||
37941236 | 971 | /* --- Crank up the resolver --- */ |
de014da6 | 972 | |
37941236 | 973 | a_resolve(a, &add->r, tag, a_doadd, ac - i, av + i); |
42da2a58 | 974 | return; |
975 | ||
37941236 | 976 | /* --- Clearing up --- */ |
977 | ||
42da2a58 | 978 | bad_syntax: |
f43df819 | 979 | a_fail(a, "bad-syntax", "add", "PEER [OPTIONS] ADDR ...", A_END); |
de014da6 | 980 | fail: |
37941236 | 981 | xfree(add->peer.name); |
982 | xfree(add); | |
0ba8de86 | 983 | return; |
984 | } | |
985 | ||
986 | /*----- Ping --------------------------------------------------------------*/ | |
987 | ||
de014da6 | 988 | /* --- @a_pingcancel@ --- * |
989 | * | |
990 | * Arguments: @admin_bgop *bg@ = background operation block | |
991 | * | |
992 | * Returns: --- | |
993 | * | |
994 | * Use: Cancels a running ping. | |
995 | */ | |
996 | ||
997 | static void a_pingcancel(admin_bgop *bg) | |
998 | { | |
999 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1000 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1001 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1002 | } | |
1003 | ||
0ba8de86 | 1004 | /* --- @a_pong@ --- * |
1005 | * | |
1006 | * Arguments: @int rc@ = return code | |
de014da6 | 1007 | * @void *v@ = ping operation block |
0ba8de86 | 1008 | * |
1009 | * Returns: --- | |
1010 | * | |
1011 | * Use: Collects what happened to a ping message. | |
1012 | */ | |
1013 | ||
de014da6 | 1014 | static void a_pong(int rc, void *v) |
0ba8de86 | 1015 | { |
de014da6 | 1016 | admin_pingop *pg = v; |
0ba8de86 | 1017 | struct timeval tv; |
1018 | double millis; | |
1019 | ||
0ba8de86 | 1020 | switch (rc) { |
1021 | case PING_OK: | |
1022 | gettimeofday(&tv, 0); | |
de014da6 | 1023 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1024 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1025 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1026 | a_bgok(&pg->bg); |
0ba8de86 | 1027 | break; |
1028 | case PING_TIMEOUT: | |
f43df819 | 1029 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1030 | a_bgok(&pg->bg); |
0ba8de86 | 1031 | break; |
1032 | case PING_PEERDIED: | |
f43df819 | 1033 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1034 | a_bgok(&pg->bg); |
0ba8de86 | 1035 | break; |
1036 | default: | |
1037 | abort(); | |
1038 | } | |
060ca767 | 1039 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1040 | a_bgrelease(&pg->bg); |
0ba8de86 | 1041 | } |
1042 | ||
1043 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1044 | * | |
1045 | * Arguments: @admin *a@ = connection which requested the ping | |
1046 | * @unsigned ac@ = argument count | |
1047 | * @char *av[]@ = pointer to the argument list | |
1048 | * | |
1049 | * Returns: --- | |
1050 | * | |
1051 | * Use: Pings a peer. | |
1052 | */ | |
1053 | ||
1054 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1055 | const char *cmd, unsigned msg) | |
1056 | { | |
1057 | long t = T_PING; | |
1058 | int i; | |
1059 | peer *p; | |
de014da6 | 1060 | admin_pingop *pg = 0; |
1061 | const char *tag = 0; | |
0ba8de86 | 1062 | |
1063 | i = 0; | |
1064 | for (;;) { | |
1065 | if (!av[i]) | |
1066 | goto bad_syntax; | |
de014da6 | 1067 | if (mystrieq(av[i], "-background")) { |
1068 | if (!av[++i]) goto bad_syntax; | |
1069 | tag = av[i]; | |
1070 | } else if (mystrieq(av[i], "-timeout")) { | |
0ba8de86 | 1071 | if (!av[++i]) goto bad_syntax; |
1072 | if ((t = a_parsetime(av[i])) < 0) { | |
f43df819 | 1073 | a_fail(a, "bad-time-spec", "%s", av[i], A_END); |
0ba8de86 | 1074 | return; |
1075 | } | |
1076 | } else if (mystrieq(av[i], "--")) { | |
1077 | i++; | |
1078 | break; | |
1079 | } else | |
1080 | break; | |
1081 | i++; | |
1082 | } | |
1083 | ||
1084 | if (!av[i]) goto bad_syntax; | |
37941236 | 1085 | if ((p = a_findpeer(a, av[i])) == 0) |
0ba8de86 | 1086 | return; |
de014da6 | 1087 | pg = xmalloc(sizeof(*pg)); |
1088 | gettimeofday(&pg->pingtime, 0); | |
1089 | a_bgadd(a, &pg->bg, tag, a_pingcancel); | |
060ca767 | 1090 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1091 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1092 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1093 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1094 | a_bgrelease(&pg->bg); |
1095 | } | |
0ba8de86 | 1096 | return; |
1097 | ||
1098 | bad_syntax: | |
f43df819 | 1099 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
42da2a58 | 1100 | return; |
410c8acf | 1101 | } |
1102 | ||
0ba8de86 | 1103 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1104 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1105 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1106 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1107 | |
410c8acf | 1108 | /*----- Administration commands -------------------------------------------*/ |
1109 | ||
1110 | /* --- Miscellaneous commands --- */ | |
1111 | ||
3cdc3f3a | 1112 | /* --- @traceish@ --- * |
1113 | * | |
1114 | * Arguments: @admin *a@ = connection to complain on | |
1115 | * @unsigned ac@ = number of arguments | |
1116 | * @char *av[]@ = vector of arguments | |
1117 | * @const char *what@ = what we're messing with | |
1118 | * @const trace_opt *tt@ = options table | |
1119 | * @unsigned *ff@ = where the flags are | |
1120 | * | |
1121 | * Returns: Nonzero if anything changed. | |
1122 | * | |
1123 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1124 | */ | |
410c8acf | 1125 | |
3cdc3f3a | 1126 | static int traceish(admin *a, unsigned ac, char *av[], |
1127 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1128 | { |
3cdc3f3a | 1129 | int ch = 0; |
1130 | ||
410c8acf | 1131 | if (!ac || strcmp(av[0], "?") == 0) { |
1132 | const trace_opt *t; | |
3cdc3f3a | 1133 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1134 | a_info(a, "*%c%c %s", |
1135 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1136 | } |
1137 | } else { | |
1138 | unsigned sense = 1; | |
3cdc3f3a | 1139 | unsigned f = *ff; |
1140 | const trace_opt *t; | |
410c8acf | 1141 | char *p = av[0]; |
1142 | ||
1143 | while (*p) { | |
1144 | switch (*p) { | |
1145 | case '+': sense = 1; break; | |
1146 | case '-': sense = 0; break; | |
1147 | default: | |
3cdc3f3a | 1148 | for (t = tt; t->ch; t++) { |
1149 | if (t->ch == *p) { | |
1150 | if (sense) f |= t->f; | |
1151 | else f &= ~t->f; | |
410c8acf | 1152 | goto tropt_ok; |
1153 | } | |
1154 | } | |
f43df819 | 1155 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1156 | return (0); |
410c8acf | 1157 | tropt_ok:; |
1158 | break; | |
1159 | } | |
1160 | p++; | |
1161 | } | |
3cdc3f3a | 1162 | *ff = f; |
1163 | ch = 1; | |
410c8acf | 1164 | } |
3cdc3f3a | 1165 | a_ok(a); |
1166 | return (ch); | |
1167 | } | |
1168 | ||
1169 | #ifndef NTRACE | |
1170 | ||
1171 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1172 | { | |
1173 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1174 | trace_level(tr_flags); | |
410c8acf | 1175 | } |
1176 | ||
1177 | #endif | |
1178 | ||
3cdc3f3a | 1179 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1180 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1181 | |
3cdc3f3a | 1182 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
1183 | const char *tag, unsigned ac, char *av[]) | |
1184 | { | |
1185 | dstr d = DSTR_INIT; | |
1186 | unsigned i; | |
1187 | ||
1188 | dstr_puts(&d, "USER"); | |
1189 | for (i = 0; i < ac; i++) | |
1190 | quotify(&d, av[i]); | |
1191 | dstr_putz(&d); | |
1192 | a_rawalert(f_and, f_eq, tag, d.buf, d.len); | |
1193 | dstr_destroy(&d); | |
1194 | a_ok(a); | |
1195 | } | |
1196 | ||
1197 | static void acmd_notify(admin *a, unsigned ac, char *av[]) | |
1198 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", ac, av); } | |
1199 | static void acmd_warn(admin *a, unsigned ac, char *av[]) | |
1200 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", ac, av); } | |
1201 | ||
410c8acf | 1202 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1203 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1204 | |
410c8acf | 1205 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1206 | { | |
1207 | if (flags & F_DAEMON) | |
f43df819 | 1208 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1209 | else { |
f43df819 | 1210 | a_notify("DAEMON", A_END); |
93bee2c4 | 1211 | if (a_stdin) |
410c8acf | 1212 | a_destroy(a_stdin); |
410c8acf | 1213 | if (u_daemon()) |
f43df819 | 1214 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1215 | else { |
410c8acf | 1216 | flags |= F_DAEMON; |
3cdc3f3a | 1217 | a_ok(a); |
93bee2c4 | 1218 | } |
410c8acf | 1219 | } |
1220 | } | |
1221 | ||
1222 | static void acmd_list(admin *a, unsigned ac, char *av[]) | |
1223 | { | |
1224 | peer *p; | |
f98df549 | 1225 | |
410c8acf | 1226 | for (p = p_first(); p; p = p_next(p)) |
f43df819 | 1227 | a_info(a, "%s", p_name(p), A_END); |
3cdc3f3a | 1228 | a_ok(a); |
410c8acf | 1229 | } |
1230 | ||
1231 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1232 | { | |
1233 | peer *p; | |
1234 | ||
37941236 | 1235 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1236 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1237 | a_ok(a); |
1238 | } | |
410c8acf | 1239 | } |
1240 | ||
64cf2223 MW |
1241 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1242 | { | |
1243 | peer *p; | |
1244 | ||
1245 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1246 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1247 | p_setifname(p, av[1]); | |
1248 | a_ok(a); | |
1249 | } | |
1250 | } | |
1251 | ||
37941236 | 1252 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1253 | { | |
1254 | buf b; | |
1255 | ||
1256 | buf_init(&b, buf_i, PKBUFSZ); | |
1257 | c_new(&b); | |
f43df819 | 1258 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1259 | a_ok(a); |
1260 | } | |
1261 | ||
1262 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1263 | { | |
1264 | base64_ctx b64; | |
1265 | buf b; | |
1266 | dstr d = DSTR_INIT; | |
1267 | ||
1268 | base64_init(&b64); | |
1269 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1270 | base64_decode(&b64, 0, 0, &d); | |
1271 | buf_init(&b, d.buf, d.len); | |
1272 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1273 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1274 | else |
1275 | a_ok(a); | |
1276 | dstr_destroy(&d); | |
1277 | } | |
1278 | ||
1279 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1280 | { | |
1281 | peer *p; | |
1282 | base64_ctx b64; | |
1283 | dstr d = DSTR_INIT; | |
1284 | ||
1285 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1286 | base64_init(&b64); | |
1287 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1288 | base64_decode(&b64, 0, 0, &d); | |
1289 | p_greet(p, d.buf, d.len); | |
1290 | dstr_destroy(&d); | |
1291 | a_ok(a); | |
1292 | } | |
1293 | } | |
1294 | ||
410c8acf | 1295 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1296 | { | |
1297 | peer *p; | |
1298 | const addr *ad; | |
1299 | ||
37941236 | 1300 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1301 | ad = p_addr(p); |
1302 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1303 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1304 | a_ok(a); |
410c8acf | 1305 | } |
1306 | } | |
1307 | ||
060ca767 | 1308 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1309 | { | |
1310 | peer *p; | |
1311 | const peerspec *ps; | |
1312 | ||
37941236 | 1313 | if ((p = a_findpeer(a, av[0])) != 0) { |
1314 | ps = p_spec(p); | |
f43df819 MW |
1315 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
1316 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); | |
37941236 | 1317 | a_ok(a); |
060ca767 | 1318 | } |
060ca767 | 1319 | } |
1320 | ||
1321 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1322 | { | |
f43df819 MW |
1323 | a_info(a, "implementation=edgeware-tripe", A_END); |
1324 | a_info(a, "version=%s", VERSION, A_END); | |
1325 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1326 | a_ok(a); |
1327 | } | |
1328 | ||
c7053da9 | 1329 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1330 | { | |
1331 | peer *p; | |
1332 | stats *st; | |
1333 | ||
37941236 | 1334 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1335 | return; |
060ca767 | 1336 | |
1337 | st = p_stats(p); | |
f43df819 MW |
1338 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1339 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1340 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
1341 | a_info(a, "packets-in=%lu bytes-in=%lu", st->n_in, st->sz_in, A_END); | |
060ca767 | 1342 | a_info(a, "packets-out=%lu bytes-out=%lu", |
f43df819 | 1343 | st->n_out, st->sz_out, A_END); |
060ca767 | 1344 | a_info(a, "keyexch-packets-in=%lu keyexch-bytes-in=%lu", |
f43df819 | 1345 | st->n_kxin, st->sz_kxin, A_END); |
060ca767 | 1346 | a_info(a, "keyexch-packets-out=%lu keyexch-bytes-out=%lu", |
f43df819 | 1347 | st->n_kxout, st->sz_kxout, A_END); |
060ca767 | 1348 | a_info(a, "ip-packets-in=%lu ip-bytes-in=%lu", |
f43df819 | 1349 | st->n_ipin, st->sz_ipin, A_END); |
060ca767 | 1350 | a_info(a, "ip-packets-out=%lu ip-bytes-out=%lu", |
f43df819 MW |
1351 | st->n_ipout, st->sz_ipout, A_END); |
1352 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); | |
060ca767 | 1353 | a_ok(a); |
c7053da9 | 1354 | } |
1355 | ||
410c8acf | 1356 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1357 | { | |
1358 | peer *p; | |
f98df549 | 1359 | |
37941236 | 1360 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1361 | p_destroy(p); |
3cdc3f3a | 1362 | a_ok(a); |
410c8acf | 1363 | } |
1364 | } | |
1365 | ||
0ba8de86 | 1366 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1367 | { | |
1368 | peer *p; | |
f98df549 | 1369 | |
37941236 | 1370 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1371 | kx_start(&p->kx, 1); |
0ba8de86 | 1372 | a_ok(a); |
1373 | } | |
1374 | } | |
1375 | ||
de014da6 | 1376 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1377 | { p_keyreload(); a_ok(a); } | |
1378 | ||
410c8acf | 1379 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1380 | { | |
f43df819 | 1381 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1382 | a_ok(a); |
de014da6 | 1383 | a_unlock(a); |
410c8acf | 1384 | a_quit(); |
1385 | } | |
1386 | ||
3cdc3f3a | 1387 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1388 | { | |
f43df819 | 1389 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1390 | a_ok(a); |
1391 | } | |
1392 | ||
42da2a58 | 1393 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1394 | { | |
1395 | int i; | |
f98df549 | 1396 | |
42da2a58 | 1397 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1398 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1399 | a_ok(a); |
1400 | } | |
1401 | ||
410c8acf | 1402 | /* --- The command table and help --- */ |
1403 | ||
1404 | typedef struct acmd { | |
1405 | const char *name; | |
1406 | const char *help; | |
1407 | unsigned argmin, argmax; | |
1408 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1409 | } acmd; | |
1410 | ||
1411 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1412 | ||
1413 | static const acmd acmdtab[] = { | |
f43df819 MW |
1414 | { "add", "PEER [OPTIONS] ADDR ...", 2, 0xffff, acmd_add }, |
1415 | { "addr", "PEER", 1, 1, acmd_addr }, | |
1416 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, | |
1417 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1418 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1419 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1420 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1421 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1422 | { "help", 0, 0, 0, acmd_help }, | |
1423 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
1424 | { "kill", "PEER", 1, 1, acmd_kill }, | |
1425 | { "list", 0, 0, 0, acmd_list }, | |
1426 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1427 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1428 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1429 | { "port", 0, 0, 0, acmd_port }, | |
1430 | { "quit", 0, 0, 0, acmd_quit }, | |
1431 | { "reload", 0, 0, 0, acmd_reload }, | |
1432 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1433 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
f43df819 | 1434 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1435 | #ifndef NTRACE |
f43df819 | 1436 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1437 | #endif |
f43df819 MW |
1438 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1439 | { "version", 0, 0, 0, acmd_version }, | |
1440 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
1441 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, | |
410c8acf | 1442 | { 0, 0, 0, 0, 0 } |
1443 | }; | |
1444 | ||
1445 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1446 | { | |
1447 | const acmd *c; | |
f98df549 | 1448 | |
f43df819 MW |
1449 | for (c = acmdtab; c->name; c++) { |
1450 | if (c->help) | |
1451 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
1452 | else | |
1453 | a_info(a, "%s", c->name, A_END); | |
1454 | } | |
3cdc3f3a | 1455 | a_ok(a); |
410c8acf | 1456 | } |
1457 | ||
1458 | /*----- Connection handling -----------------------------------------------*/ | |
1459 | ||
fd3cf232 | 1460 | /* --- @a_lock@ --- * |
410c8acf | 1461 | * |
1462 | * Arguments: @admin *a@ = pointer to an admin block | |
1463 | * | |
1464 | * Returns: --- | |
1465 | * | |
fd3cf232 | 1466 | * Use: Locks an admin block so that it won't be destroyed |
1467 | * immediately. | |
410c8acf | 1468 | */ |
1469 | ||
060ca767 | 1470 | static void a_lock(admin *a) { a->ref++; } |
fd3cf232 | 1471 | |
060ca767 | 1472 | /* --- @a_dodestroy@ --- * |
fd3cf232 | 1473 | * |
1474 | * Arguments: @admin *a@ = pointer to an admin block | |
1475 | * | |
1476 | * Returns: --- | |
1477 | * | |
060ca767 | 1478 | * Use: Actually does the legwork of destroying an admin block. |
fd3cf232 | 1479 | */ |
1480 | ||
060ca767 | 1481 | static void a_dodestroy(admin *a) |
410c8acf | 1482 | { |
de014da6 | 1483 | admin_bgop *bg, *bbg; |
de014da6 | 1484 | |
fd3cf232 | 1485 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
1486 | a->seq); ) | |
1487 | ||
410c8acf | 1488 | selbuf_destroy(&a->b); |
de014da6 | 1489 | for (bg = a->bg; bg; bg = bbg) { |
1490 | bbg = bg->next; | |
1491 | bg->cancel(bg); | |
1492 | if (bg->tag) xfree(bg->tag); | |
1493 | xfree(bg); | |
410c8acf | 1494 | } |
de014da6 | 1495 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); |
fd3cf232 | 1496 | close(a->w.fd); |
1497 | ||
1498 | if (a_stdin == a) | |
1499 | a_stdin = 0; | |
410c8acf | 1500 | if (a->next) |
1501 | a->next->prev = a->prev; | |
1502 | if (a->prev) | |
1503 | a->prev->next = a->next; | |
1504 | else | |
1505 | admins = a->next; | |
410c8acf | 1506 | DESTROY(a); |
1507 | } | |
1508 | ||
060ca767 | 1509 | /* --- @a_unlock@ --- * |
1510 | * | |
1511 | * Arguments: @admin *a@ = pointer to an admin block | |
1512 | * | |
1513 | * Returns: --- | |
1514 | * | |
1515 | * Use: Unlocks an admin block, allowing its destruction. This is | |
1516 | * also the second half of @a_destroy@. | |
1517 | */ | |
1518 | ||
1519 | static void a_unlock(admin *a) | |
1520 | { | |
1521 | assert(a->ref); | |
1522 | if (!--a->ref && (a->f & AF_DEAD)) | |
1523 | a_dodestroy(a); | |
1524 | } | |
1525 | ||
fd3cf232 | 1526 | /* --- @a_destroy@ --- * |
1527 | * | |
1528 | * Arguments: @admin *a@ = pointer to an admin block | |
1529 | * | |
1530 | * Returns: --- | |
1531 | * | |
1532 | * Use: Destroys an admin block. This requires a certain amount of | |
1533 | * care. | |
1534 | */ | |
1535 | ||
de014da6 | 1536 | static void freequeue(oqueue *q) |
1537 | { | |
1538 | obuf *o, *oo; | |
1539 | ||
1540 | for (o = q->hd; o; o = oo) { | |
1541 | oo = o->next; | |
1542 | xfree(o); | |
1543 | } | |
1544 | q->hd = q->tl = 0; | |
1545 | } | |
1546 | ||
fd3cf232 | 1547 | static void a_destroy(admin *a) |
1548 | { | |
1549 | /* --- Don't multiply destroy admin blocks --- */ | |
1550 | ||
1551 | if (a->f & AF_DEAD) | |
1552 | return; | |
1553 | ||
1554 | /* --- Make sure nobody expects it to work --- */ | |
1555 | ||
1556 | a->f |= AF_DEAD; | |
1557 | T( trace(T_ADMIN, "admin: destroying connection %u", a->seq); ) | |
1558 | ||
1559 | /* --- Free the output buffers --- */ | |
1560 | ||
de014da6 | 1561 | if (a->out.hd) |
fd3cf232 | 1562 | sel_rmfile(&a->w); |
de014da6 | 1563 | freequeue(&a->out); |
fd3cf232 | 1564 | |
1565 | /* --- If the block is locked, that's all we can manage --- */ | |
1566 | ||
060ca767 | 1567 | if (!a->ref) |
1568 | a_dodestroy(a); | |
1569 | T( else | |
1570 | trace(T_ADMIN, "admin: deferring destruction..."); ) | |
fd3cf232 | 1571 | } |
1572 | ||
410c8acf | 1573 | /* --- @a_line@ --- * |
1574 | * | |
1575 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 1576 | * @size_t len@ = length of the line |
410c8acf | 1577 | * @void *vp@ = pointer to my admin block |
1578 | * | |
1579 | * Returns: --- | |
1580 | * | |
1581 | * Use: Handles a line of input. | |
1582 | */ | |
1583 | ||
3008eabf | 1584 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 1585 | { |
1586 | admin *a = vp; | |
1587 | const acmd *c; | |
3cdc3f3a | 1588 | char *av[16]; |
410c8acf | 1589 | size_t ac; |
1590 | ||
8d0c7a83 | 1591 | TIMER; |
fd3cf232 | 1592 | if (a->f & AF_DEAD) |
1593 | return; | |
410c8acf | 1594 | if (!p) { |
de014da6 | 1595 | if (!a->bg) |
1596 | a_destroy(a); | |
1597 | else { | |
1598 | a->f |= AF_CLOSE; | |
1599 | selbuf_disable(&a->b); | |
1600 | } | |
410c8acf | 1601 | return; |
1602 | } | |
3cdc3f3a | 1603 | ac = str_qsplit(p, av, 16, 0, STRF_QUOTE); |
410c8acf | 1604 | if (!ac) |
1605 | return; | |
410c8acf | 1606 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 1607 | if (mystrieq(av[0], c->name)) { |
410c8acf | 1608 | ac--; |
f43df819 MW |
1609 | if (c->argmin > ac || ac > c->argmax) { |
1610 | if (!c->help) | |
1611 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
1612 | else | |
1613 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); | |
1614 | } else { | |
fd3cf232 | 1615 | a_lock(a); |
410c8acf | 1616 | c->func(a, ac, av + 1); |
fd3cf232 | 1617 | a_unlock(a); |
1618 | } | |
410c8acf | 1619 | return; |
1620 | } | |
1621 | } | |
f43df819 | 1622 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 1623 | } |
1624 | ||
1625 | /* --- @a_create@ --- * | |
1626 | * | |
1627 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 1628 | * @unsigned f@ = initial flags to set |
410c8acf | 1629 | * |
1630 | * Returns: --- | |
1631 | * | |
1632 | * Use: Creates a new admin connection. | |
1633 | */ | |
1634 | ||
3cdc3f3a | 1635 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 1636 | { |
1637 | admin *a = CREATE(admin); | |
3cdc3f3a | 1638 | |
93bee2c4 | 1639 | T( static unsigned seq = 0; |
1640 | a->seq = seq++; ) | |
410c8acf | 1641 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 1642 | a->bg = 0; |
042d5c20 | 1643 | a->ref = 0; |
3cdc3f3a | 1644 | a->f = f; |
de014da6 | 1645 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 1646 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 1647 | if (fd_out != fd_in) |
fd3cf232 | 1648 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 1649 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 1650 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 1651 | a->out.hd = a->out.tl = 0; |
410c8acf | 1652 | a->next = admins; |
1653 | a->prev = 0; | |
de014da6 | 1654 | if (admins) admins->prev = a; |
410c8acf | 1655 | admins = a; |
1656 | } | |
1657 | ||
1658 | /* --- @a_accept@ --- * | |
1659 | * | |
1660 | * Arguments: @int fd@ = file descriptor to accept | |
1661 | * @unsigned mode@ = what to do | |
1662 | * @void *v@ = uninteresting pointer | |
1663 | * | |
1664 | * Returns: --- | |
1665 | * | |
1666 | * Use: Accepts a new admin connection. | |
1667 | */ | |
1668 | ||
1669 | static void a_accept(int fd, unsigned mode, void *v) | |
1670 | { | |
1671 | int nfd; | |
1672 | struct sockaddr_un sun; | |
1673 | size_t sz = sizeof(sun); | |
1674 | ||
1675 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 1676 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
1677 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 1678 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 1679 | return; |
1680 | } | |
3cdc3f3a | 1681 | a_create(nfd, nfd, 0); |
410c8acf | 1682 | } |
1683 | ||
1684 | /* --- @a_daemon@ --- * | |
1685 | * | |
1686 | * Arguments: --- | |
1687 | * | |
1688 | * Returns: --- | |
1689 | * | |
1690 | * Use: Informs the admin module that it's a daemon. | |
1691 | */ | |
1692 | ||
f98df549 | 1693 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 1694 | |
1695 | /* --- @a_init@ --- * | |
1696 | * | |
1697 | * Arguments: @const char *name@ = socket name to create | |
1698 | * | |
1699 | * Returns: --- | |
1700 | * | |
1701 | * Use: Creates the admin listening socket. | |
1702 | */ | |
1703 | ||
1704 | void a_init(const char *name) | |
1705 | { | |
1706 | int fd; | |
1707 | int n = 5; | |
1708 | struct sockaddr_un sun; | |
1709 | struct sigaction sa; | |
1710 | size_t sz; | |
1711 | ||
1712 | /* --- Set up the socket address --- */ | |
1713 | ||
1714 | sz = strlen(name) + 1; | |
1715 | if (sz > sizeof(sun.sun_path)) | |
1716 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
1717 | BURN(sun); | |
1718 | sun.sun_family = AF_UNIX; | |
1719 | memcpy(sun.sun_path, name, sz); | |
1720 | sz += offsetof(struct sockaddr_un, sun_path); | |
1721 | ||
1722 | /* --- Attempt to bind to the socket --- */ | |
1723 | ||
1724 | umask(0077); | |
1725 | again: | |
1726 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
1727 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
1728 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
1729 | struct stat st; | |
1730 | int e = errno; | |
1731 | if (errno != EADDRINUSE) { | |
1732 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
1733 | sun.sun_path, strerror(e)); | |
1734 | } | |
1735 | if (!n) | |
1736 | die(EXIT_FAILURE, "too many retries; giving up"); | |
1737 | n--; | |
1738 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
1739 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
1740 | sun.sun_path); | |
1741 | } | |
1742 | if (errno != ECONNREFUSED) | |
1743 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
1744 | if (stat(sun.sun_path, &st)) { | |
1745 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
1746 | sun.sun_path, strerror(errno)); | |
1747 | } | |
1748 | if (!S_ISSOCK(st.st_mode)) | |
1749 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 1750 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 1751 | unlink(sun.sun_path); |
1752 | close(fd); | |
1753 | goto again; | |
1754 | } | |
1755 | chmod(sun.sun_path, 0600); | |
1756 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
1757 | if (listen(fd, 5)) | |
1758 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
1759 | ||
1760 | /* --- Listen to the socket --- */ | |
1761 | ||
1762 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
1763 | sel_addfile(&sock); | |
1764 | sockname = name; | |
1765 | bres_init(&sel); | |
1766 | T( trace_custom(a_trace, 0); | |
1767 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
1768 | flags |= F_INIT; | |
1769 | ||
1770 | /* --- Set up signal handlers --- */ | |
1771 | ||
1772 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
1773 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 1774 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 1775 | sigaction(SIGINT, 0, &sa); |
1776 | if (sa.sa_handler != SIG_IGN) | |
1777 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
1778 | } | |
1779 | ||
1780 | /*----- That's all, folks -------------------------------------------------*/ |