Commit | Line | Data |
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410c8acf | 1 | /* -*-c-*- |
2 | * | |
410c8acf | 3 | * Admin interface for configuration |
4 | * | |
5 | * (c) 2001 Straylight/Edgeware | |
6 | */ | |
7 | ||
e04c2d50 | 8 | /*----- Licensing notice --------------------------------------------------* |
410c8acf | 9 | * |
10 | * This file is part of Trivial IP Encryption (TrIPE). | |
11 | * | |
12 | * TrIPE is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
e04c2d50 | 16 | * |
410c8acf | 17 | * TrIPE is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
e04c2d50 | 21 | * |
410c8acf | 22 | * You should have received a copy of the GNU General Public License |
23 | * along with TrIPE; if not, write to the Free Software Foundation, | |
24 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | */ | |
26 | ||
410c8acf | 27 | /*----- Header files ------------------------------------------------------*/ |
28 | ||
29 | #include "tripe.h" | |
30 | ||
31 | /*----- Global variables --------------------------------------------------*/ | |
32 | ||
33 | #ifndef NTRACE | |
34 | ||
35 | const trace_opt tr_opts[] = { | |
36 | { 't', T_TUNNEL, "tunnel events" }, | |
37 | { 'r', T_PEER, "peer events" }, | |
38 | { 'a', T_ADMIN, "admin interface" }, | |
410c8acf | 39 | { 's', T_KEYSET, "symmetric keyset management" }, |
40 | { 'x', T_KEYEXCH, "key exchange" }, | |
41 | { 'm', T_KEYMGMT, "key management" }, | |
37941236 | 42 | { 'l', T_CHAL, "challenge management" }, |
43 | { 'p', T_PACKET, "packet contents" }, | |
44 | { 'c', T_CRYPTO, "crypto details" }, | |
410c8acf | 45 | { 'A', T_ALL, "all of the above" }, |
46 | { 0, 0, 0 } | |
47 | }; | |
48 | ||
49 | unsigned tr_flags = 0; | |
50 | #endif | |
51 | ||
3cdc3f3a | 52 | static const trace_opt w_opts[] = { |
53 | { 't', AF_TRACE, "trace messages" }, | |
54 | { 'n', AF_NOTE, "asynchronous notifications" }, | |
55 | { 'w', AF_WARN, "warnings" }, | |
56 | { 'A', AF_ALLMSGS, "all of the above" }, | |
57 | { 0, 0, 0 } | |
58 | }; | |
59 | ||
410c8acf | 60 | /*----- Static variables --------------------------------------------------*/ |
61 | ||
62 | static admin *admins; | |
c511e1f9 | 63 | static admin *a_dead; |
410c8acf | 64 | static sel_file sock; |
65 | static const char *sockname; | |
be6a1b7a | 66 | static sym_table a_svcs; |
410c8acf | 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*/); |
fd3cf232 | 78 | |
060ca767 | 79 | #define BOOL(x) ((x) ? "t" : "nil") |
80 | ||
fd3cf232 | 81 | /*----- Output functions --------------------------------------------------*/ |
82 | ||
83 | /* --- @trywrite@ --- * | |
84 | * | |
85 | * Arguments: @admin *a@ = pointer to an admin block | |
86 | * @const char *p@ = pointer to buffer to write | |
87 | * @size_t sz@ = size of data to write | |
88 | * | |
89 | * Returns: The number of bytes written, or less than zero on error. | |
90 | * | |
91 | * Use: Attempts to write data to a client. | |
92 | */ | |
93 | ||
94 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
95 | { | |
96 | ssize_t n, done = 0; | |
97 | ||
98 | again: | |
99 | if (!sz) | |
100 | return (done); | |
101 | n = write(a->w.fd, p, sz); | |
102 | if (n > 0) { | |
103 | done += n; | |
104 | p += n; | |
105 | sz -= n; | |
106 | goto again; | |
107 | } | |
108 | if (n < 0) { | |
109 | if (errno == EINTR) | |
110 | goto again; | |
111 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
112 | a_destroy(a); | |
f43df819 | 113 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 114 | return (-1); |
115 | } | |
116 | } | |
117 | return (done); | |
118 | } | |
119 | ||
de014da6 | 120 | /* --- @doqueue@ -- * |
fd3cf232 | 121 | * |
de014da6 | 122 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 123 | * @const char *p@ = pointer to buffer to write |
de014da6 | 124 | * @size_t sz@ = size of buffer |
fd3cf232 | 125 | * |
de014da6 | 126 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 127 | * |
de014da6 | 128 | * Use: Queues data to be written later. |
fd3cf232 | 129 | */ |
130 | ||
de014da6 | 131 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 132 | { |
fd3cf232 | 133 | obuf *o; |
de014da6 | 134 | int rc = 0; |
135 | size_t n; | |
fd3cf232 | 136 | |
de014da6 | 137 | o = q->tl; |
fd3cf232 | 138 | if (!o) |
de014da6 | 139 | rc = 1; |
fd3cf232 | 140 | else if (o->p_in < o->buf + OBUFSZ) |
141 | goto noalloc; | |
142 | ||
143 | do { | |
144 | o = xmalloc(sizeof(obuf)); | |
145 | o->next = 0; | |
146 | o->p_in = o->p_out = o->buf; | |
de014da6 | 147 | if (q->tl) |
148 | q->tl->next = o; | |
fd3cf232 | 149 | else |
de014da6 | 150 | q->hd = o; |
151 | q->tl = o; | |
fd3cf232 | 152 | |
153 | noalloc: | |
154 | n = o->buf + OBUFSZ - o->p_in; | |
155 | if (n > sz) | |
156 | n = sz; | |
157 | memcpy(o->p_in, p, n); | |
158 | o->p_in += n; | |
159 | p += n; | |
160 | sz -= n; | |
161 | } while (sz); | |
de014da6 | 162 | |
163 | return (rc); | |
164 | } | |
165 | ||
166 | /* --- @dosend@ --- * | |
167 | * | |
168 | * Arguemnts: @admin *a@ = pointer to an admin block | |
169 | * @const char *p@ = pointer to buffer to write | |
170 | * @size_t sz@ = size of data to write | |
171 | * | |
172 | * Returns: --- | |
173 | * | |
174 | * Use: Sends data to an admin client. | |
175 | */ | |
176 | ||
177 | static void dosend(admin *a, const char *p, size_t sz) | |
178 | { | |
179 | ssize_t n; | |
180 | ||
181 | if (a->f & AF_DEAD) | |
182 | return; | |
183 | if (!a->out.hd) { | |
184 | if ((n = trywrite(a, p, sz)) < 0) | |
185 | return; | |
186 | p += n; | |
187 | sz -= n; | |
188 | if (!sz) | |
189 | return; | |
190 | } | |
191 | if (doqueue(&a->out, p, sz)) | |
192 | sel_addfile(&a->w); | |
fd3cf232 | 193 | } |
194 | ||
195 | /* --- @a_flush@ --- * | |
196 | * | |
197 | * Arguments: @int fd@ = file descriptor | |
198 | * @unsigned mode@ = what's happening | |
199 | * @void *v@ = pointer to my admin block | |
200 | * | |
201 | * Returns: --- | |
202 | * | |
203 | * Use: Flushes buffers when a client is ready to read again. | |
204 | */ | |
205 | ||
206 | static void a_flush(int fd, unsigned mode, void *v) | |
207 | { | |
208 | admin *a = v; | |
209 | obuf *o, *oo; | |
210 | ssize_t n; | |
211 | ||
de014da6 | 212 | o = a->out.hd; |
fd3cf232 | 213 | while (o) { |
214 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
215 | return; | |
216 | o->p_out += n; | |
217 | if (o->p_in < o->p_out) | |
218 | break; | |
219 | oo = o; | |
220 | o = o->next; | |
221 | xfree(oo); | |
222 | } | |
de014da6 | 223 | a->out.hd = o; |
fd3cf232 | 224 | if (!o) { |
de014da6 | 225 | a->out.tl = 0; |
fd3cf232 | 226 | sel_rmfile(&a->w); |
227 | } | |
228 | } | |
229 | ||
410c8acf | 230 | /*----- Utility functions -------------------------------------------------*/ |
231 | ||
f43df819 MW |
232 | /* --- @a_vformat@ --- * |
233 | * | |
234 | * Arguments: @dstr *d@ = where to leave the formatted message | |
235 | * @const char *fmt@ = pointer to format string | |
236 | * @va_list ap@ = arguments in list | |
237 | * | |
238 | * Returns: --- | |
239 | * | |
240 | * Use: Main message token formatting driver. | |
241 | */ | |
242 | ||
243 | static void a_vformat(dstr *d, const char *fmt, va_list ap) | |
244 | { | |
245 | dstr dd = DSTR_INIT; | |
246 | ||
247 | while (fmt) { | |
248 | if (*fmt == '*') { | |
249 | dstr_putc(d, ' '); | |
250 | dstr_vputf(d, fmt + 1, &ap); | |
251 | } else if (*fmt == '?') { | |
252 | if (strcmp(fmt, "?ADDR") == 0) { | |
253 | const addr *a = va_arg(ap, const addr *); | |
254 | switch (a->sa.sa_family) { | |
255 | case AF_INET: | |
0ed0735f MW |
256 | u_quotify(d, "INET"); |
257 | u_quotify(d, inet_ntoa(a->sin.sin_addr)); | |
f43df819 MW |
258 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); |
259 | break; | |
260 | default: | |
261 | abort(); | |
262 | } | |
263 | } else if (strcmp(fmt, "?B64") == 0) { | |
264 | const octet *p = va_arg(ap, const octet *); | |
265 | size_t n = va_arg(ap, size_t); | |
266 | base64_ctx b64; | |
267 | dstr_putc(d, ' '); | |
268 | base64_init(&b64); | |
269 | b64.indent = ""; | |
270 | b64.maxline = 0; | |
271 | base64_encode(&b64, p, n, d); | |
272 | base64_encode(&b64, 0, 0, d); | |
273 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
3331936b MW |
274 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
275 | const char *const *av = va_arg(ap, const char *const *); | |
0ed0735f | 276 | while (*av) u_quotify(d, *av++); |
f43df819 | 277 | } else if (strcmp(fmt, "?PEER") == 0) |
0ed0735f | 278 | u_quotify(d, p_name(va_arg(ap, peer *))); |
f43df819 MW |
279 | else if (strcmp(fmt, "?ERRNO") == 0) { |
280 | dstr_putf(d, " E%d", errno); | |
0ed0735f | 281 | u_quotify(d, strerror(errno)); |
f43df819 MW |
282 | } else |
283 | abort(); | |
284 | } else { | |
285 | if (*fmt == '!') fmt++; | |
286 | DRESET(&dd); | |
287 | dstr_vputf(&dd, fmt, &ap); | |
0ed0735f | 288 | u_quotify(d, dd.buf); |
f43df819 MW |
289 | } |
290 | fmt = va_arg(ap, const char *); | |
291 | } | |
292 | ||
293 | dstr_destroy(&dd); | |
294 | } | |
295 | ||
3cdc3f3a | 296 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 297 | * |
298 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 299 | * @const char *status@ = status code to report |
300 | * @const char *tag@ = tag string, or null | |
410c8acf | 301 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 302 | * @va_list ap@ = arguments in list |
410c8acf | 303 | * @...@ = other arguments |
304 | * | |
305 | * Returns: --- | |
306 | * | |
307 | * Use: Sends a message to an admin connection. | |
308 | */ | |
309 | ||
de014da6 | 310 | static void a_vwrite(admin *a, const char *status, const char *tag, |
311 | const char *fmt, va_list ap) | |
410c8acf | 312 | { |
410c8acf | 313 | dstr d = DSTR_INIT; |
f98df549 | 314 | |
de014da6 | 315 | if (tag) dstr_puts(&d, "BG"); |
316 | dstr_puts(&d, status); | |
0ed0735f | 317 | if (tag) u_quotify(&d, tag); |
f43df819 | 318 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 319 | dstr_putc(&d, '\n'); |
320 | dosend(a, d.buf, d.len); | |
321 | dstr_destroy(&d); | |
322 | } | |
323 | ||
de014da6 | 324 | static void a_write(admin *a, const char *status, const char *tag, |
325 | const char *fmt, ...) | |
3cdc3f3a | 326 | { |
327 | va_list ap; | |
f98df549 | 328 | |
410c8acf | 329 | va_start(ap, fmt); |
de014da6 | 330 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 331 | va_end(ap); |
3cdc3f3a | 332 | } |
333 | ||
334 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
335 | * | |
336 | * Arguments: @admin *a@ = connection | |
337 | * @const char *fmt@ = format string | |
338 | * @...@ = other arguments | |
339 | * | |
340 | * Returns: --- | |
341 | * | |
342 | * Use: Convenience functions for @a_write@. | |
343 | */ | |
344 | ||
f43df819 | 345 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 346 | |
347 | static void a_info(admin *a, const char *fmt, ...) | |
348 | { | |
349 | va_list ap; | |
f98df549 | 350 | |
3cdc3f3a | 351 | va_start(ap, fmt); |
de014da6 | 352 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 353 | va_end(ap); |
354 | } | |
355 | ||
356 | static void a_fail(admin *a, const char *fmt, ...) | |
357 | { | |
358 | va_list ap; | |
f98df549 | 359 | |
3cdc3f3a | 360 | va_start(ap, fmt); |
de014da6 | 361 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 362 | va_end(ap); |
363 | } | |
364 | ||
365 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
366 | * | |
367 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 368 | * @const char *status@ = status string |
3cdc3f3a | 369 | * @const char *fmt@ = pointer to format string |
de014da6 | 370 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 371 | * @size_t sz@ = size of raw string |
372 | * @va_list ap@ = arguments in list | |
373 | * @...@ = other arguments | |
374 | * | |
375 | * Returns: --- | |
376 | * | |
377 | * Use: Write a message to all admin connections matched by the given | |
378 | * filter. | |
379 | */ | |
380 | ||
de014da6 | 381 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 382 | const char *p, size_t sz) |
383 | { | |
384 | admin *a, *aa; | |
385 | dstr d = DSTR_INIT; | |
e04c2d50 | 386 | |
3cdc3f3a | 387 | if (!(flags & F_INIT)) |
388 | return; | |
de014da6 | 389 | dstr_puts(&d, status); |
390 | if (p) { | |
391 | dstr_putc(&d, ' '); | |
3cdc3f3a | 392 | dstr_putm(&d, p, sz); |
de014da6 | 393 | } |
3cdc3f3a | 394 | dstr_putc(&d, '\n'); |
395 | p = d.buf; | |
396 | sz = d.len; | |
397 | for (a = admins; a; a = aa) { | |
398 | aa = a->next; | |
399 | if ((a->f & f_and) == f_eq) | |
400 | dosend(a, d.buf, d.len); | |
401 | } | |
410c8acf | 402 | dstr_destroy(&d); |
403 | } | |
404 | ||
b9adb829 | 405 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 406 | const char *fmt, va_list ap) |
407 | { | |
408 | dstr d = DSTR_INIT; | |
409 | ||
410 | if (!(flags & F_INIT)) | |
411 | return; | |
f43df819 | 412 | a_vformat(&d, fmt, ap); |
b9adb829 | 413 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 414 | dstr_destroy(&d); |
415 | } | |
416 | ||
b9adb829 | 417 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 418 | const char *fmt, ...) |
419 | { | |
420 | va_list ap; | |
f98df549 | 421 | |
3cdc3f3a | 422 | va_start(ap, fmt); |
b9adb829 | 423 | a_valert(f_and, f_eq, status, fmt, ap); |
3cdc3f3a | 424 | va_end(ap); |
425 | } | |
3cdc3f3a | 426 | |
410c8acf | 427 | /* --- @a_warn@ --- * |
428 | * | |
429 | * Arguments: @const char *fmt@ = pointer to format string | |
430 | * @...@ = other arguments | |
431 | * | |
432 | * Returns: --- | |
433 | * | |
434 | * Use: Informs all admin connections of a warning. | |
435 | */ | |
436 | ||
437 | void a_warn(const char *fmt, ...) | |
438 | { | |
439 | va_list ap; | |
410c8acf | 440 | |
410c8acf | 441 | va_start(ap, fmt); |
3cdc3f3a | 442 | if (flags & F_INIT) |
443 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 444 | else { |
f43df819 | 445 | dstr d = DSTR_INIT; |
3cdc3f3a | 446 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
447 | a_vformat(&d, fmt, ap); |
448 | dstr_putc(&d, '\n'); | |
449 | dstr_write(&d, stderr); | |
450 | dstr_destroy(&d); | |
410c8acf | 451 | } |
3cdc3f3a | 452 | va_end(ap); |
410c8acf | 453 | } |
454 | ||
455 | /* --- @a_trace@ --- * | |
456 | * | |
457 | * Arguments: @const char *p@ = pointer to a buffer | |
458 | * @size_t sz@ = size of the buffer | |
459 | * @void *v@ = uninteresting pointer | |
460 | * | |
461 | * Returns: --- | |
462 | * | |
3cdc3f3a | 463 | * Use: Custom trace output handler. Sends trace messages to |
464 | * interested admin connections. | |
410c8acf | 465 | */ |
466 | ||
467 | #ifndef NTRACE | |
468 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 469 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 470 | #endif |
471 | ||
3cdc3f3a | 472 | /* --- @a_notify@ --- * |
473 | * | |
474 | * Arguments: @const char *fmt@ = pointer to format string | |
475 | * @...@ = other arguments | |
476 | * | |
477 | * Returns: --- | |
478 | * | |
479 | * Use: Sends a notification to interested admin connections. | |
480 | */ | |
481 | ||
482 | void a_notify(const char *fmt, ...) | |
483 | { | |
484 | va_list ap; | |
485 | ||
486 | va_start(ap, fmt); | |
487 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
488 | va_end(ap); | |
489 | } | |
490 | ||
410c8acf | 491 | /* --- @a_quit@ --- * |
492 | * | |
493 | * Arguments: --- | |
494 | * | |
495 | * Returns: --- | |
496 | * | |
497 | * Use: Shuts things down nicely. | |
498 | */ | |
499 | ||
500 | void a_quit(void) | |
501 | { | |
42da2a58 | 502 | peer *p; |
503 | ||
410c8acf | 504 | close(sock.fd); |
505 | unlink(sockname); | |
de014da6 | 506 | while ((p = p_first()) != 0) |
507 | p_destroy(p); | |
410c8acf | 508 | exit(0); |
509 | } | |
510 | ||
511 | /* --- @a_sigdie@ --- * | |
512 | * | |
513 | * Arguments: @int sig@ = signal number | |
514 | * @void *v@ = an uninteresting argument | |
515 | * | |
516 | * Returns: --- | |
517 | * | |
518 | * Use Shuts down on receipt of a fatal signal. | |
519 | */ | |
520 | ||
521 | static void a_sigdie(int sig, void *v) | |
522 | { | |
523 | char *p; | |
524 | char buf[20]; | |
525 | ||
526 | switch (sig) { | |
527 | case SIGTERM: p = "SIGTERM"; break; | |
528 | case SIGINT: p = "SIGINT"; break; | |
529 | default: | |
3cdc3f3a | 530 | sprintf(buf, "%i", sig); |
410c8acf | 531 | p = buf; |
532 | break; | |
533 | } | |
f43df819 | 534 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 535 | a_quit(); |
536 | } | |
537 | ||
538 | /* --- @a_sighup@ --- * | |
539 | * | |
540 | * Arguments: @int sig@ = signal number | |
541 | * @void *v@ = an uninteresting argument | |
542 | * | |
543 | * Returns: --- | |
544 | * | |
545 | * Use Logs a message about SIGHUP not being useful. | |
546 | */ | |
547 | ||
548 | static void a_sighup(int sig, void *v) | |
f98df549 | 549 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 550 | |
0ba8de86 | 551 | /* --- @a_parsetime@ --- * |
552 | * | |
553 | * Arguments; @const char *p@ = time string to parse | |
554 | * | |
555 | * Returns: Time in seconds, or @< 0@ on error. | |
556 | */ | |
557 | ||
558 | static long a_parsetime(const char *p) | |
559 | { | |
560 | char *q; | |
561 | long t = strtol(p, &q, 0); | |
562 | ||
563 | switch (*q) { | |
564 | case 'd': t *= 24; | |
565 | case 'h': t *= 60; | |
566 | case 'm': t *= 60; | |
567 | case 's': if (q[1] != 0) | |
e04c2d50 | 568 | default: t = -1; |
0ba8de86 | 569 | case 0: break; |
570 | } | |
e04c2d50 | 571 | return (t); |
0ba8de86 | 572 | } |
573 | ||
37941236 | 574 | /* --- @a_findpeer@ --- * |
575 | * | |
576 | * Arguments: @admin *a@ = admin connection | |
577 | * @const char *pn@ = peer name | |
578 | * | |
579 | * Returns: The peer, or null if not there. | |
580 | * | |
581 | * Use: Finds a peer, reporting an error if it failed. | |
582 | */ | |
583 | ||
584 | static peer *a_findpeer(admin *a, const char *pn) | |
585 | { | |
586 | peer *p; | |
587 | ||
588 | if ((p = p_find(pn)) == 0) | |
f43df819 | 589 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 590 | return (p); |
591 | } | |
592 | ||
de014da6 | 593 | /*----- Backgrounded operations -------------------------------------------*/ |
594 | ||
060ca767 | 595 | #define BGTAG(bg) \ |
596 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
597 | ||
ff92ffd3 MW |
598 | /* --- @a_bgfind@ --- * |
599 | * | |
600 | * Arguments: @admin *a@ = a client block | |
601 | * @const char *tag@ = the requested tag | |
602 | * | |
603 | * Returns: The requested background job, or null. | |
604 | */ | |
605 | ||
606 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
607 | { | |
608 | admin_bgop *bg; | |
609 | ||
610 | for (bg = a->bg; bg; bg = bg->next) { | |
611 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
612 | return (bg); | |
613 | } | |
614 | return (0); | |
615 | } | |
616 | ||
de014da6 | 617 | /* --- @a_bgrelease@ --- * |
618 | * | |
619 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
620 | * | |
621 | * Returns: --- | |
622 | * | |
623 | * Use: Removes a backgrounded operation from the queue, since | |
624 | * (presumably) it's done. | |
625 | */ | |
626 | ||
627 | static void a_bgrelease(admin_bgop *bg) | |
628 | { | |
629 | admin *a = bg->a; | |
630 | ||
060ca767 | 631 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
632 | if (bg->tag) xfree(bg->tag); | |
633 | else selbuf_enable(&a->b); | |
634 | if (bg->next) bg->next->prev = bg->prev; | |
635 | if (bg->prev) bg->prev->next = bg->next; | |
636 | else a->bg = bg->next; | |
de014da6 | 637 | xfree(bg); |
547a9c13 | 638 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 639 | } |
640 | ||
641 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
642 | * | |
643 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
644 | * @const char *fmt@ = format string | |
645 | * @...@ = other arguments | |
646 | * | |
647 | * Returns: --- | |
648 | * | |
649 | * Use: Convenience functions for @a_write@. | |
650 | */ | |
651 | ||
652 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 653 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 654 | |
655 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
656 | { | |
657 | va_list ap; | |
658 | va_start(ap, fmt); | |
659 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
660 | va_end(ap); | |
661 | } | |
662 | ||
663 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
664 | { | |
665 | va_list ap; | |
666 | va_start(ap, fmt); | |
667 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
668 | va_end(ap); | |
669 | } | |
670 | ||
671 | /* --- @a_bgadd@ --- * | |
672 | * | |
673 | * Arguments: @admin *a@ = administration connection | |
674 | * @admin_bgop *bg@ = pointer to background operation | |
675 | * @const char *tag@ = background tag, or null for foreground | |
676 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
677 | * | |
ff92ffd3 | 678 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 679 | * |
680 | * Use: Links a background job into the list. | |
681 | */ | |
682 | ||
ff92ffd3 MW |
683 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
684 | void (*cancel)(admin_bgop *)) | |
de014da6 | 685 | { |
ff92ffd3 MW |
686 | if (tag) { |
687 | if (a_bgfind(a, tag)) { | |
688 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
689 | return (-1); | |
690 | } | |
de014da6 | 691 | bg->tag = xstrdup(tag); |
ff92ffd3 | 692 | } |
de014da6 | 693 | else { |
694 | bg->tag = 0; | |
695 | selbuf_disable(&a->b); | |
696 | } | |
697 | bg->a = a; | |
698 | bg->cancel = cancel; | |
699 | bg->next = a->bg; | |
700 | bg->prev = 0; | |
060ca767 | 701 | if (a->bg) a->bg->prev = bg; |
de014da6 | 702 | a->bg = bg; |
060ca767 | 703 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 704 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 705 | return (0); |
de014da6 | 706 | } |
707 | ||
5d46c0f8 MW |
708 | /*----- Job table manipulation --------------------------------------------*/ |
709 | ||
710 | #define JOB_SHIFT 16 | |
711 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
712 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
713 | ||
714 | #define JOB_END 0xfffffffful | |
715 | ||
716 | static unsigned long a_joboffset; | |
717 | ||
718 | /* --- @a_jobidencode@ --- * | |
719 | * | |
720 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
721 | * | |
722 | * Returns: A jobid for this job, in an internal static buffer. | |
723 | * | |
724 | * Use: Constructs a jobid. In order to dissuade people from | |
725 | * predicting jobids, we obfuscate them. | |
726 | * | |
727 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
728 | * are an index into a big array. The high 16 bits are a | |
729 | * sequence number recording how many times that slot has been | |
730 | * reused. | |
731 | * | |
732 | * This `raw' jobid is then obfuscated by adding a randomly- | |
733 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
734 | * odd constant. | |
735 | */ | |
736 | ||
737 | static const char *a_jobidencode(admin_svcop *svc) | |
738 | { | |
739 | admin_jobtable *j = &svc->prov->j; | |
740 | static char buf[10]; | |
741 | unsigned long pre; | |
742 | unsigned seq; | |
743 | ||
744 | assert(svc->index <= JOB_INDEXMASK); | |
745 | seq = j->v[svc->index].seq; | |
746 | assert(seq <= JOB_SEQMASK); | |
747 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
748 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
749 | return (buf); | |
750 | } | |
751 | ||
752 | /* --- @a_jobiddecode@ --- * | |
753 | * | |
754 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
755 | * @const char *jid@ = pointer to a jobid string | |
756 | * | |
757 | * Returns: A pointer to the job's @svcop@ structure. | |
758 | */ | |
759 | ||
760 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
761 | { | |
762 | unsigned i; | |
763 | unsigned long pre; | |
764 | ||
765 | if (jid[0] != 'J') | |
766 | return (0); | |
767 | for (i = 1; i < 9; i++) { | |
768 | if (!isxdigit((unsigned char)jid[i])) | |
769 | return (0); | |
770 | } | |
771 | if (jid[9] != 0) | |
772 | return (0); | |
773 | pre = strtoul(jid + 1, 0, 16); | |
774 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
775 | i = pre & JOB_INDEXMASK; | |
776 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
777 | return (0); | |
778 | return (j->v[i].u.op); | |
779 | } | |
780 | ||
781 | /* --- @a_jobcreate@ --- * | |
782 | * | |
783 | * Arguments: @admin *a@ = pointer to administration client | |
784 | * | |
785 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
786 | * | |
787 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
788 | */ | |
789 | ||
790 | static admin_svcop *a_jobcreate(admin *a) | |
791 | { | |
792 | admin_svcop *svc; | |
793 | unsigned i; | |
794 | unsigned sz; | |
795 | admin_jobtable *j = &a->j; | |
796 | ||
797 | if (j->free != JOB_END) { | |
798 | i = j->free; | |
799 | j->free = j->v[i].u.next; | |
800 | } else { | |
801 | if (j->n == j->sz) { | |
802 | if (j->sz > JOB_INDEXMASK) | |
803 | return (0); | |
804 | sz = j->sz; | |
805 | if (!sz) { | |
806 | j->sz = 16; | |
807 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
808 | } else { | |
809 | j->sz = sz << 1; | |
810 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
811 | } | |
812 | } | |
813 | i = j->n++; | |
814 | j->v[i].seq = 0; | |
815 | } | |
816 | svc = xmalloc(sizeof(*svc)); | |
817 | svc->index = i; | |
818 | svc->prov = a; | |
819 | svc->next = j->active; | |
820 | svc->prev = 0; | |
821 | if (j->active) j->active->prev = svc; | |
822 | j->active = svc; | |
823 | j->v[i].u.op = svc; | |
824 | IF_TRACING(T_ADMIN, { | |
825 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
826 | }) | |
827 | return (svc); | |
828 | } | |
829 | ||
830 | /* --- @a_jobdestroy@ --- * | |
831 | * | |
832 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
833 | * | |
834 | * Returns: --- | |
835 | * | |
836 | * Use: Frees up a completed (or cancelled) job. | |
837 | */ | |
838 | ||
839 | static void a_jobdestroy(admin_svcop *svc) | |
840 | { | |
841 | admin *a = svc->prov; | |
842 | admin_jobtable *j = &a->j; | |
843 | unsigned i = svc->index; | |
844 | ||
845 | IF_TRACING(T_ADMIN, { | |
846 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
847 | }) | |
848 | assert(j->v[i].u.op = svc); | |
849 | j->v[i].u.next = j->free; | |
850 | j->v[i].seq++; | |
851 | j->free = i; | |
852 | if (svc->next) svc->next->prev = svc->prev; | |
853 | if (svc->prev) svc->prev->next = svc->next; | |
854 | else j->active = svc->next; | |
855 | } | |
856 | ||
857 | /* --- @a_jobtableinit@ --- * | |
858 | * | |
859 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
860 | * | |
861 | * Returns: --- | |
862 | * | |
863 | * Use: Initializes a job table. | |
864 | */ | |
865 | ||
866 | static void a_jobtableinit(admin_jobtable *j) | |
867 | { | |
868 | if (!a_joboffset) | |
869 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
870 | j->n = j->sz = 0; | |
871 | j->active = 0; | |
872 | j->free = JOB_END; | |
873 | j->v = 0; | |
874 | } | |
875 | ||
876 | /* --- @a_jobtablefinal@ --- * | |
877 | * | |
878 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
879 | * | |
880 | * Returns: --- | |
881 | * | |
882 | * Use: Closes down a job table. | |
883 | */ | |
884 | ||
885 | static void a_jobtablefinal(admin_jobtable *j) | |
886 | { | |
887 | admin_svcop *svc, *ssvc; | |
888 | ||
889 | for (svc = j->active; svc; svc = ssvc) { | |
890 | ssvc = svc->next; | |
891 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
892 | a_bgrelease(&svc->bg); | |
893 | } | |
894 | if (j->v) xfree(j->v); | |
895 | } | |
896 | ||
be6a1b7a MW |
897 | /*----- Services infrastructure -------------------------------------------*/ |
898 | ||
899 | /* --- @a_svcfind@ --- * | |
900 | * | |
901 | * Arguments: @admin *a@ = the requesting client | |
902 | * @const char *name@ = service name wanted | |
903 | * | |
904 | * Returns: The service requested, or null. | |
905 | * | |
906 | * Use: Finds a service; reports an error if the service couldn't be | |
907 | * found. | |
908 | */ | |
909 | ||
910 | static admin_service *a_svcfind(admin *a, const char *name) | |
911 | { | |
912 | admin_service *svc; | |
913 | ||
914 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
915 | a_fail(a, "unknown-service", "%s", name, A_END); | |
916 | return (0); | |
917 | } | |
918 | return (svc); | |
919 | } | |
920 | ||
921 | /* --- @a_svcunlink@ --- * | |
922 | * | |
923 | * Arguments: @admin_service *svc@ = pointer to service structure | |
924 | * | |
925 | * Returns: --- | |
926 | * | |
927 | * Use: Unlinks the service from its provider, without issuing a | |
928 | * message or freeing the structure. The version string is | |
929 | * freed, however. | |
930 | */ | |
931 | ||
932 | static void a_svcunlink(admin_service *svc) | |
933 | { | |
934 | if (svc->next) | |
935 | svc->next->prev = svc->prev; | |
936 | if (svc->prev) | |
937 | svc->prev->next = svc->next; | |
938 | else | |
939 | svc->prov->svcs = svc->next; | |
940 | xfree(svc->version); | |
941 | } | |
942 | ||
943 | /* --- @a_svcrelease@ --- * | |
944 | * | |
945 | * Arguments: @admin_service *svc@ = pointer to service structure | |
946 | * | |
947 | * Returns: --- | |
948 | * | |
949 | * Use: Releases a service and frees its structure. | |
950 | */ | |
951 | ||
952 | static void a_svcrelease(admin_service *svc) | |
953 | { | |
954 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
955 | a_svcunlink(svc); | |
956 | sym_remove(&a_svcs, svc); | |
de014da6 | 957 | } |
958 | ||
37941236 | 959 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 960 | |
37941236 | 961 | /* --- @a_resolved@ --- * |
de014da6 | 962 | * |
37941236 | 963 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
964 | * @void *v@ = pointer to resolver operation | |
de014da6 | 965 | * |
966 | * Returns: --- | |
967 | * | |
37941236 | 968 | * Use: Handles a completed name resolution. |
de014da6 | 969 | */ |
970 | ||
37941236 | 971 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 972 | { |
37941236 | 973 | admin_resop *r = v; |
974 | ||
975 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
976 | TIMER; | |
977 | if (!h) { | |
f43df819 | 978 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 979 | r->func(r, ARES_FAIL); |
980 | } else { | |
981 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
982 | r->func(r, ARES_OK); | |
983 | } | |
984 | sel_rmtimer(&r->t); | |
985 | xfree(r->addr); | |
986 | a_bgrelease(&r->bg); | |
e04c2d50 | 987 | } |
de014da6 | 988 | |
37941236 | 989 | /* --- @a_restimer@ --- * |
de014da6 | 990 | * |
37941236 | 991 | * Arguments: @struct timeval *tv@ = timer |
992 | * @void *v@ = pointer to resolver operation | |
de014da6 | 993 | * |
994 | * Returns: --- | |
995 | * | |
37941236 | 996 | * Use: Times out a resolver. |
de014da6 | 997 | */ |
998 | ||
37941236 | 999 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 1000 | { |
37941236 | 1001 | admin_resop *r = v; |
1002 | ||
1003 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1004 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1005 | r->func(r, ARES_FAIL); |
1006 | bres_abort(&r->r); | |
1007 | xfree(r->addr); | |
1008 | a_bgrelease(&r->bg); | |
de014da6 | 1009 | } |
1010 | ||
37941236 | 1011 | /* --- @a_rescancel@ --- * |
de014da6 | 1012 | * |
37941236 | 1013 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1014 | * |
1015 | * Returns: --- | |
1016 | * | |
37941236 | 1017 | * Use: Cancels an add operation. |
de014da6 | 1018 | */ |
1019 | ||
37941236 | 1020 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1021 | { |
37941236 | 1022 | admin_resop *r = (admin_resop *)bg; |
1023 | ||
1024 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1025 | r->func(r, ARES_FAIL); | |
1026 | sel_rmtimer(&r->t); | |
1027 | xfree(r->addr); | |
1028 | bres_abort(&r->r); | |
de014da6 | 1029 | } |
37941236 | 1030 | |
1031 | /* --- @a_resolve@ --- * | |
410c8acf | 1032 | * |
37941236 | 1033 | * Arguments: @admin *a@ = administration connection |
1034 | * @admin_resop *r@ = resolver operation to run | |
1035 | * @const char *tag@ = background operation tag | |
1036 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1037 | * @unsigned ac@ = number of remaining arguments | |
1038 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1039 | * |
1040 | * Returns: --- | |
1041 | * | |
37941236 | 1042 | * Use: Cranks up a resolver job. |
410c8acf | 1043 | */ |
1044 | ||
37941236 | 1045 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1046 | void (*func)(struct admin_resop *, int), | |
1047 | unsigned ac, char *av[]) | |
410c8acf | 1048 | { |
37941236 | 1049 | struct timeval tv; |
1050 | unsigned long pt; | |
1051 | char *p; | |
1052 | int i = 0; | |
fd3cf232 | 1053 | |
37941236 | 1054 | /* --- Fill in the easy bits of address --- */ |
1055 | ||
452bf3f6 | 1056 | r->bg.tag = "<starting>"; |
37941236 | 1057 | r->addr = 0; |
1058 | r->func = func; | |
1059 | if (mystrieq(av[i], "inet")) i++; | |
165efde7 MW |
1060 | if (ac - i != 1 && ac - i != 2) { |
1061 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS [PORT]", A_END); | |
37941236 | 1062 | goto fail; |
1063 | } | |
1064 | r->sa.sin.sin_family = AF_INET; | |
1065 | r->sasz = sizeof(r->sa.sin); | |
1066 | r->addr = xstrdup(av[i]); | |
165efde7 MW |
1067 | if (!av[i + i]) |
1068 | pt = TRIPE_PORT; | |
1069 | else { | |
1070 | pt = strtoul(av[i + 1], &p, 0); | |
1071 | if (*p) { | |
1072 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1073 | if (!s) { | |
1074 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); | |
1075 | goto fail; | |
1076 | } | |
1077 | pt = ntohs(s->s_port); | |
37941236 | 1078 | } |
410c8acf | 1079 | } |
37941236 | 1080 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1081 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1082 | goto fail; |
1083 | } | |
1084 | r->sa.sin.sin_port = htons(pt); | |
1085 | ||
1086 | /* --- Report backgrounding --- * | |
1087 | * | |
1088 | * Do this for consistency of interface, even if we're going to get the | |
1089 | * answer straight away. | |
1090 | */ | |
1091 | ||
ff92ffd3 MW |
1092 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1093 | goto fail; | |
37941236 | 1094 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
1095 | a->seq, BGTAG(r), r->addr); ) | |
1096 | ||
1097 | /* --- If the name is numeric, do it the easy way --- */ | |
e04c2d50 | 1098 | |
37941236 | 1099 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { |
1100 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1101 | func(r, ARES_OK); | |
1102 | xfree(r->addr); | |
1103 | a_bgrelease(&r->bg); | |
1104 | return; | |
1105 | } | |
1106 | ||
1107 | /* --- Store everything for later and crank up the resolver --- */ | |
1108 | ||
1109 | gettimeofday(&tv, 0); | |
1110 | tv.tv_sec += T_RESOLVE; | |
1111 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
1112 | bres_byname(&r->r, r->addr, a_resolved, r); | |
1113 | return; | |
1114 | ||
1115 | fail: | |
1116 | func(r, ARES_FAIL); | |
1117 | if (r->addr) xfree(r->addr); | |
1118 | xfree(r); | |
410c8acf | 1119 | } |
1120 | ||
e7a4d919 MW |
1121 | /*----- Option parsing ----------------------------------------------------*/ |
1122 | ||
1123 | #define OPTIONS(argc, argv, guts) do { \ | |
1124 | char **o_av = argv; \ | |
1125 | for (;; o_av++) { \ | |
1126 | if (!*o_av) \ | |
1127 | break; \ | |
1128 | if (mystrieq(*o_av, "--")) { \ | |
1129 | o_av++; \ | |
1130 | break; \ | |
1131 | } \ | |
1132 | guts \ | |
1133 | if (**o_av == '-') \ | |
1134 | goto bad_syntax; \ | |
1135 | break; \ | |
1136 | } \ | |
1137 | argc -= o_av - argv; \ | |
1138 | argv = o_av; \ | |
1139 | } while (0) | |
1140 | ||
1141 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1142 | ||
1143 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1144 | const char *arg; \ | |
1145 | arg = *++o_av; \ | |
1146 | if (!arg) goto bad_syntax; \ | |
1147 | guts \ | |
1148 | }) | |
1149 | ||
1150 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1151 | long arg; \ | |
1152 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1153 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1154 | goto fail; \ | |
1155 | } \ | |
1156 | guts \ | |
1157 | }) | |
1158 | ||
37941236 | 1159 | /*----- Adding peers ------------------------------------------------------*/ |
1160 | ||
1161 | /* --- @a_doadd@ --- * | |
410c8acf | 1162 | * |
37941236 | 1163 | * Arguments: @admin_resop *r@ = resolver operation |
1164 | * @int rc@ = how it worked | |
410c8acf | 1165 | * |
1166 | * Returns: --- | |
1167 | * | |
37941236 | 1168 | * Use: Handles a completed resolution. |
410c8acf | 1169 | */ |
1170 | ||
37941236 | 1171 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1172 | { |
37941236 | 1173 | admin_addop *add = (admin_addop *)r; |
1174 | ||
1175 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1176 | ||
1177 | if (rc == ARES_OK) { | |
1178 | add->peer.sasz = add->r.sasz; | |
1179 | add->peer.sa = add->r.sa; | |
1180 | if (p_find(add->peer.name)) | |
f43df819 | 1181 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 1182 | else if (!p_create(&add->peer)) |
f43df819 | 1183 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 1184 | else |
1185 | a_bgok(&add->r.bg); | |
1186 | } | |
de014da6 | 1187 | |
37941236 | 1188 | xfree(add->peer.name); |
410c8acf | 1189 | } |
1190 | ||
1191 | /* --- @acmd_add@ --- * | |
1192 | * | |
1193 | * Arguments: @admin *a@ = connection which requested the addition | |
1194 | * @unsigned ac@ = argument count | |
1195 | * @char *av[]@ = pointer to the argument list | |
1196 | * | |
1197 | * Returns: --- | |
1198 | * | |
1199 | * Use: Adds a new peer. | |
1200 | */ | |
1201 | ||
1202 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
1203 | { | |
de014da6 | 1204 | const char *tag = 0; |
9986f0b5 | 1205 | admin_addop *add; |
410c8acf | 1206 | |
0ba8de86 | 1207 | /* --- Set stuff up --- */ |
1208 | ||
de014da6 | 1209 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 1210 | add->peer.name = 0; |
de014da6 | 1211 | add->peer.t_ka = 0; |
1212 | add->peer.tops = tun_default; | |
37941236 | 1213 | |
42da2a58 | 1214 | /* --- Parse options --- */ |
1215 | ||
e7a4d919 MW |
1216 | OPTIONS(ac, av, { |
1217 | OPTARG("-background", arg, { tag = arg; }) | |
1218 | OPTARG("-tunnel", arg, { | |
1219 | unsigned i; | |
1220 | for (i = 0;; i++) { | |
1221 | if (!tunnels[i]) { | |
1222 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 1223 | goto fail; |
42da2a58 | 1224 | } |
e7a4d919 MW |
1225 | if (mystrieq(arg, tunnels[i]->name)) { |
1226 | add->peer.tops = tunnels[i]; | |
42da2a58 | 1227 | break; |
1228 | } | |
1229 | } | |
e7a4d919 MW |
1230 | }) |
1231 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
1232 | }); | |
42da2a58 | 1233 | |
9986f0b5 MW |
1234 | /* --- Make sure someone's not got there already --- */ |
1235 | ||
bcf3764a | 1236 | if (!av[0] || !av[1]) |
9986f0b5 | 1237 | goto bad_syntax; |
e7a4d919 MW |
1238 | if (p_find(*av)) { |
1239 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1240 | goto fail; |
42da2a58 | 1241 | } |
e7a4d919 MW |
1242 | add->peer.name = xstrdup(*av++); |
1243 | ac--; | |
42da2a58 | 1244 | |
37941236 | 1245 | /* --- Crank up the resolver --- */ |
de014da6 | 1246 | |
e7a4d919 | 1247 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1248 | return; |
1249 | ||
37941236 | 1250 | /* --- Clearing up --- */ |
1251 | ||
42da2a58 | 1252 | bad_syntax: |
9986f0b5 | 1253 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1254 | fail: |
9986f0b5 | 1255 | if (add->peer.name) xfree(add->peer.name); |
37941236 | 1256 | xfree(add); |
0ba8de86 | 1257 | return; |
1258 | } | |
1259 | ||
1260 | /*----- Ping --------------------------------------------------------------*/ | |
1261 | ||
de014da6 | 1262 | /* --- @a_pingcancel@ --- * |
1263 | * | |
1264 | * Arguments: @admin_bgop *bg@ = background operation block | |
1265 | * | |
1266 | * Returns: --- | |
1267 | * | |
1268 | * Use: Cancels a running ping. | |
1269 | */ | |
1270 | ||
1271 | static void a_pingcancel(admin_bgop *bg) | |
1272 | { | |
1273 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1274 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1275 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1276 | } | |
1277 | ||
0ba8de86 | 1278 | /* --- @a_pong@ --- * |
1279 | * | |
1280 | * Arguments: @int rc@ = return code | |
de014da6 | 1281 | * @void *v@ = ping operation block |
0ba8de86 | 1282 | * |
1283 | * Returns: --- | |
1284 | * | |
1285 | * Use: Collects what happened to a ping message. | |
1286 | */ | |
1287 | ||
de014da6 | 1288 | static void a_pong(int rc, void *v) |
0ba8de86 | 1289 | { |
de014da6 | 1290 | admin_pingop *pg = v; |
0ba8de86 | 1291 | struct timeval tv; |
1292 | double millis; | |
1293 | ||
0ba8de86 | 1294 | switch (rc) { |
1295 | case PING_OK: | |
1296 | gettimeofday(&tv, 0); | |
de014da6 | 1297 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1298 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1299 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1300 | a_bgok(&pg->bg); |
0ba8de86 | 1301 | break; |
1302 | case PING_TIMEOUT: | |
f43df819 | 1303 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1304 | a_bgok(&pg->bg); |
0ba8de86 | 1305 | break; |
1306 | case PING_PEERDIED: | |
f43df819 | 1307 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1308 | a_bgok(&pg->bg); |
0ba8de86 | 1309 | break; |
1310 | default: | |
1311 | abort(); | |
1312 | } | |
060ca767 | 1313 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1314 | a_bgrelease(&pg->bg); |
0ba8de86 | 1315 | } |
1316 | ||
1317 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1318 | * | |
1319 | * Arguments: @admin *a@ = connection which requested the ping | |
1320 | * @unsigned ac@ = argument count | |
1321 | * @char *av[]@ = pointer to the argument list | |
1322 | * | |
1323 | * Returns: --- | |
1324 | * | |
1325 | * Use: Pings a peer. | |
1326 | */ | |
1327 | ||
1328 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1329 | const char *cmd, unsigned msg) | |
1330 | { | |
1331 | long t = T_PING; | |
0ba8de86 | 1332 | peer *p; |
de014da6 | 1333 | admin_pingop *pg = 0; |
1334 | const char *tag = 0; | |
0ba8de86 | 1335 | |
e7a4d919 MW |
1336 | OPTIONS(ac, av, { |
1337 | OPTARG("-background", arg, { tag = arg; }) | |
1338 | OPTTIME("-timeout", arg, { t = arg; }) | |
1339 | }); | |
1340 | if (!*av || av[1]) goto bad_syntax; | |
1341 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1342 | return; |
de014da6 | 1343 | pg = xmalloc(sizeof(*pg)); |
1344 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1345 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1346 | goto fail; | |
060ca767 | 1347 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1348 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1349 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1350 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1351 | a_bgrelease(&pg->bg); |
1352 | } | |
0ba8de86 | 1353 | return; |
e04c2d50 | 1354 | |
0ba8de86 | 1355 | bad_syntax: |
f43df819 | 1356 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1357 | fail: |
ff92ffd3 | 1358 | if (pg) xfree(pg); |
42da2a58 | 1359 | return; |
410c8acf | 1360 | } |
1361 | ||
0ba8de86 | 1362 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1363 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1364 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1365 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1366 | |
be6a1b7a MW |
1367 | /*----- Service commands --------------------------------------------------*/ |
1368 | ||
1369 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1370 | { | |
1371 | admin_service *svc; | |
1372 | unsigned f; | |
1373 | ||
1374 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1375 | if (f) { | |
1376 | if (versioncmp(av[1], svc->version) <= 0) { | |
1377 | a_fail(a, | |
1378 | "service-exists", | |
1379 | "%s", SYM_NAME(svc), | |
1380 | "%s", svc->version, | |
1381 | A_END); | |
1382 | return; | |
1383 | } | |
1384 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1385 | a_svcunlink(svc); | |
1386 | } | |
1387 | svc->prov = a; | |
1388 | svc->version = xstrdup(av[1]); | |
1389 | svc->next = a->svcs; | |
1390 | svc->prev = 0; | |
1391 | if (a->svcs) a->svcs->prev = svc; | |
1392 | a->svcs = svc; | |
1393 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1394 | a_ok(a); | |
1395 | } | |
1396 | ||
1397 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1398 | { | |
1399 | admin_service *svc; | |
1400 | ||
1401 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1402 | return; | |
1403 | if (svc->prov != a) { | |
1404 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1405 | return; | |
1406 | } | |
1407 | a_svcrelease(svc); | |
1408 | a_ok(a); | |
1409 | } | |
1410 | ||
1411 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1412 | { | |
1413 | admin_service *svc; | |
1414 | ||
1415 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1416 | return; | |
1417 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1418 | a_fail(a, "service-too-old", | |
1419 | "%s", SYM_NAME(svc), | |
1420 | "%s", svc->version, | |
1421 | A_END); | |
1422 | return; | |
1423 | } | |
1424 | a_ok(a); | |
1425 | } | |
1426 | ||
1427 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1428 | { | |
1429 | admin_service *svc; | |
1430 | ||
1431 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1432 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1433 | a_ok(a); | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1438 | { | |
1439 | admin_service *svc; | |
1440 | sym_iter i; | |
1441 | ||
1442 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1443 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1444 | a_ok(a); | |
1445 | } | |
1446 | ||
ef2f29c9 MW |
1447 | static void a_canceljob(admin_bgop *bg) |
1448 | { | |
1449 | admin_svcop *svc = (admin_svcop *)bg; | |
1450 | ||
1451 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1452 | a_jobdestroy(svc); | |
1453 | } | |
1454 | ||
1455 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1456 | { | |
1457 | const char *tag = 0; | |
1458 | admin_service *svc; | |
1459 | admin_svcop *svcop; | |
1460 | const char *ver = 0; | |
1461 | dstr d = DSTR_INIT; | |
1462 | ||
1463 | OPTIONS(ac, av, { | |
1464 | OPTARG("-background", arg, { tag = arg; }) | |
1465 | OPTARG("-version", arg, { ver = arg; }) | |
1466 | }); | |
1467 | if (!*av) goto bad_syntax; | |
1468 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1469 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1470 | a_fail(a, "service-too-old", | |
1471 | "%s", SYM_NAME(svc), | |
1472 | "%s", svc->version, | |
1473 | A_END); | |
1474 | goto fail; | |
1475 | } | |
1476 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1477 | a_fail(a, "provider-overloaded", A_END); | |
1478 | goto fail; | |
1479 | } | |
1480 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1481 | a_jobdestroy(svcop); | |
1482 | goto fail; | |
1483 | } | |
1484 | a_write(svc->prov, "SVCJOB", 0, | |
1485 | "%s", a_jobidencode(svcop), | |
1486 | "?TOKENS", av, | |
1487 | A_END); | |
1488 | goto done; | |
1489 | ||
1490 | bad_syntax: | |
1491 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1492 | fail: | |
1493 | done: | |
1494 | dstr_destroy(&d); | |
1495 | return; | |
1496 | } | |
1497 | ||
1498 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1499 | { | |
1500 | admin_svcop *svc; | |
1501 | ||
1502 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1503 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1504 | return; | |
1505 | } | |
1506 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1507 | if (donep) { | |
1508 | a_jobdestroy(svc); | |
1509 | a_bgrelease(&svc->bg); | |
1510 | } | |
1511 | a_ok(a); | |
1512 | } | |
1513 | ||
1514 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1515 | { a_replycmd(a, "OK", 1, av); } | |
1516 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1517 | { a_replycmd(a, "INFO", 0, av); } | |
1518 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1519 | { a_replycmd(a, "FAIL", 1, av); } | |
1520 | ||
410c8acf | 1521 | /*----- Administration commands -------------------------------------------*/ |
1522 | ||
1523 | /* --- Miscellaneous commands --- */ | |
1524 | ||
3cdc3f3a | 1525 | /* --- @traceish@ --- * |
1526 | * | |
1527 | * Arguments: @admin *a@ = connection to complain on | |
1528 | * @unsigned ac@ = number of arguments | |
1529 | * @char *av[]@ = vector of arguments | |
1530 | * @const char *what@ = what we're messing with | |
1531 | * @const trace_opt *tt@ = options table | |
1532 | * @unsigned *ff@ = where the flags are | |
1533 | * | |
1534 | * Returns: Nonzero if anything changed. | |
1535 | * | |
1536 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1537 | */ | |
410c8acf | 1538 | |
3cdc3f3a | 1539 | static int traceish(admin *a, unsigned ac, char *av[], |
1540 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1541 | { |
3cdc3f3a | 1542 | int ch = 0; |
1543 | ||
410c8acf | 1544 | if (!ac || strcmp(av[0], "?") == 0) { |
1545 | const trace_opt *t; | |
3cdc3f3a | 1546 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1547 | a_info(a, "*%c%c %s", |
1548 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1549 | } |
1550 | } else { | |
1551 | unsigned sense = 1; | |
3cdc3f3a | 1552 | unsigned f = *ff; |
1553 | const trace_opt *t; | |
410c8acf | 1554 | char *p = av[0]; |
1555 | ||
1556 | while (*p) { | |
1557 | switch (*p) { | |
1558 | case '+': sense = 1; break; | |
1559 | case '-': sense = 0; break; | |
1560 | default: | |
3cdc3f3a | 1561 | for (t = tt; t->ch; t++) { |
1562 | if (t->ch == *p) { | |
1563 | if (sense) f |= t->f; | |
1564 | else f &= ~t->f; | |
410c8acf | 1565 | goto tropt_ok; |
1566 | } | |
1567 | } | |
f43df819 | 1568 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1569 | return (0); |
e04c2d50 | 1570 | tropt_ok:; |
410c8acf | 1571 | break; |
1572 | } | |
1573 | p++; | |
1574 | } | |
3cdc3f3a | 1575 | *ff = f; |
1576 | ch = 1; | |
410c8acf | 1577 | } |
3cdc3f3a | 1578 | a_ok(a); |
1579 | return (ch); | |
1580 | } | |
1581 | ||
1582 | #ifndef NTRACE | |
1583 | ||
1584 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1585 | { | |
1586 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1587 | trace_level(tr_flags); | |
410c8acf | 1588 | } |
1589 | ||
1590 | #endif | |
1591 | ||
3cdc3f3a | 1592 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1593 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1594 | |
3cdc3f3a | 1595 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1596 | const char *status, char *av[]) |
1597 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1598 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1599 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1600 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1601 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1602 | |
410c8acf | 1603 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1604 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1605 | |
410c8acf | 1606 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1607 | { | |
1608 | if (flags & F_DAEMON) | |
f43df819 | 1609 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1610 | else { |
f43df819 | 1611 | a_notify("DAEMON", A_END); |
93bee2c4 | 1612 | if (a_stdin) |
410c8acf | 1613 | a_destroy(a_stdin); |
19dd2531 | 1614 | if (daemonize()) |
f43df819 | 1615 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1616 | else { |
410c8acf | 1617 | flags |= F_DAEMON; |
3cdc3f3a | 1618 | a_ok(a); |
93bee2c4 | 1619 | } |
410c8acf | 1620 | } |
1621 | } | |
1622 | ||
ff92ffd3 MW |
1623 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1624 | { | |
1625 | admin_bgop *bg; | |
1626 | ||
1627 | for (bg = a->bg; bg; bg = bg->next) { | |
1628 | assert(bg->tag); | |
1629 | a_info(a, "%s", bg->tag, A_END); | |
1630 | } | |
1631 | a_ok(a); | |
1632 | } | |
1633 | ||
1634 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1635 | { | |
1636 | admin_bgop *bg; | |
1637 | ||
1638 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1639 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1640 | else { | |
1641 | bg->cancel(bg); | |
1642 | a_bgrelease(bg); | |
1643 | a_ok(a); | |
1644 | } | |
1645 | } | |
1646 | ||
410c8acf | 1647 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1648 | { | |
1649 | peer *p; | |
f98df549 | 1650 | |
410c8acf | 1651 | for (p = p_first(); p; p = p_next(p)) |
f43df819 | 1652 | a_info(a, "%s", p_name(p), A_END); |
3cdc3f3a | 1653 | a_ok(a); |
410c8acf | 1654 | } |
1655 | ||
1656 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1657 | { | |
1658 | peer *p; | |
1659 | ||
37941236 | 1660 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1661 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1662 | a_ok(a); |
1663 | } | |
410c8acf | 1664 | } |
1665 | ||
64cf2223 MW |
1666 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1667 | { | |
1668 | peer *p; | |
1669 | ||
1670 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1671 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1672 | p_setifname(p, av[1]); | |
1673 | a_ok(a); | |
e04c2d50 | 1674 | } |
64cf2223 MW |
1675 | } |
1676 | ||
37941236 | 1677 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1678 | { | |
1679 | buf b; | |
1680 | ||
1681 | buf_init(&b, buf_i, PKBUFSZ); | |
1682 | c_new(&b); | |
f43df819 | 1683 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1684 | a_ok(a); |
1685 | } | |
1686 | ||
1687 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1688 | { | |
1689 | base64_ctx b64; | |
1690 | buf b; | |
1691 | dstr d = DSTR_INIT; | |
1692 | ||
1693 | base64_init(&b64); | |
1694 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1695 | base64_decode(&b64, 0, 0, &d); | |
1696 | buf_init(&b, d.buf, d.len); | |
1697 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1698 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1699 | else |
1700 | a_ok(a); | |
1701 | dstr_destroy(&d); | |
1702 | } | |
1703 | ||
1704 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1705 | { | |
1706 | peer *p; | |
1707 | base64_ctx b64; | |
1708 | dstr d = DSTR_INIT; | |
1709 | ||
1710 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1711 | base64_init(&b64); | |
1712 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1713 | base64_decode(&b64, 0, 0, &d); | |
1714 | p_greet(p, d.buf, d.len); | |
1715 | dstr_destroy(&d); | |
1716 | a_ok(a); | |
1717 | } | |
1718 | } | |
1719 | ||
410c8acf | 1720 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1721 | { | |
1722 | peer *p; | |
1723 | const addr *ad; | |
1724 | ||
37941236 | 1725 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1726 | ad = p_addr(p); |
1727 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1728 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1729 | a_ok(a); |
410c8acf | 1730 | } |
1731 | } | |
1732 | ||
060ca767 | 1733 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1734 | { | |
1735 | peer *p; | |
1736 | const peerspec *ps; | |
1737 | ||
37941236 | 1738 | if ((p = a_findpeer(a, av[0])) != 0) { |
1739 | ps = p_spec(p); | |
f43df819 MW |
1740 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
1741 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); | |
37941236 | 1742 | a_ok(a); |
060ca767 | 1743 | } |
060ca767 | 1744 | } |
1745 | ||
1746 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1747 | { | |
f43df819 MW |
1748 | a_info(a, "implementation=edgeware-tripe", A_END); |
1749 | a_info(a, "version=%s", VERSION, A_END); | |
1750 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1751 | a_ok(a); |
1752 | } | |
1753 | ||
c7053da9 | 1754 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1755 | { | |
1756 | peer *p; | |
1757 | stats *st; | |
1758 | ||
37941236 | 1759 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1760 | return; |
060ca767 | 1761 | |
1762 | st = p_stats(p); | |
f43df819 MW |
1763 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1764 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1765 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
1766 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
1767 | a_info(a, | |
1768 | "packets-out=%lu", st->n_out, | |
1769 | "bytes-out=%lu", st->sz_out, | |
1770 | A_END); | |
1771 | a_info(a, | |
1772 | "keyexch-packets-in=%lu", st->n_kxin, | |
1773 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
1774 | A_END); | |
1775 | a_info(a, | |
1776 | "keyexch-packets-out=%lu", st->n_kxout, | |
1777 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
1778 | A_END); | |
1779 | a_info(a, | |
1780 | "ip-packets-in=%lu", st->n_ipin, | |
1781 | "ip-bytes-in=%lu", st->sz_ipin, | |
1782 | A_END); | |
1783 | a_info(a, | |
e04c2d50 | 1784 | "ip-packets-out=%lu", st->n_ipout, |
18ad8913 MW |
1785 | "ip-bytes-out=%lu", st->sz_ipout, |
1786 | A_END); | |
f43df819 | 1787 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 1788 | a_ok(a); |
c7053da9 | 1789 | } |
1790 | ||
410c8acf | 1791 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1792 | { | |
1793 | peer *p; | |
f98df549 | 1794 | |
37941236 | 1795 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1796 | p_destroy(p); |
3cdc3f3a | 1797 | a_ok(a); |
410c8acf | 1798 | } |
1799 | } | |
1800 | ||
0ba8de86 | 1801 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1802 | { | |
1803 | peer *p; | |
f98df549 | 1804 | |
37941236 | 1805 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1806 | kx_start(&p->kx, 1); |
0ba8de86 | 1807 | a_ok(a); |
1808 | } | |
1809 | } | |
1810 | ||
de014da6 | 1811 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1812 | { p_keyreload(); a_ok(a); } | |
1813 | ||
410c8acf | 1814 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1815 | { | |
f43df819 | 1816 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1817 | a_ok(a); |
410c8acf | 1818 | a_quit(); |
1819 | } | |
1820 | ||
3cdc3f3a | 1821 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1822 | { | |
f43df819 | 1823 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1824 | a_ok(a); |
1825 | } | |
1826 | ||
42da2a58 | 1827 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1828 | { | |
1829 | int i; | |
f98df549 | 1830 | |
42da2a58 | 1831 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1832 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1833 | a_ok(a); |
1834 | } | |
1835 | ||
410c8acf | 1836 | /* --- The command table and help --- */ |
1837 | ||
1838 | typedef struct acmd { | |
1839 | const char *name; | |
1840 | const char *help; | |
1841 | unsigned argmin, argmax; | |
1842 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1843 | } acmd; | |
1844 | ||
1845 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1846 | ||
1847 | static const acmd acmdtab[] = { | |
9986f0b5 | 1848 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1849 | { "addr", "PEER", 1, 1, acmd_addr }, |
ff92ffd3 | 1850 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1851 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1852 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1853 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1854 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1855 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1856 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1857 | { "help", 0, 0, 0, acmd_help }, | |
1858 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1859 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1860 | { "kill", "PEER", 1, 1, acmd_kill }, |
1861 | { "list", 0, 0, 0, acmd_list }, | |
1862 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1863 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1864 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1865 | { "port", 0, 0, 0, acmd_port }, | |
1866 | { "quit", 0, 0, 0, acmd_quit }, | |
1867 | { "reload", 0, 0, 0, acmd_reload }, | |
1868 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1869 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
be6a1b7a MW |
1870 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
1871 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
1872 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
1873 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 1874 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 1875 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
1876 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
1877 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
1878 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
1879 | 2, 0xffff, acmd_svcsubmit }, | |
f43df819 | 1880 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1881 | #ifndef NTRACE |
f43df819 | 1882 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1883 | #endif |
f43df819 MW |
1884 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1885 | { "version", 0, 0, 0, acmd_version }, | |
1886 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
e04c2d50 | 1887 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, |
410c8acf | 1888 | { 0, 0, 0, 0, 0 } |
1889 | }; | |
1890 | ||
1891 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1892 | { | |
1893 | const acmd *c; | |
f98df549 | 1894 | |
f43df819 MW |
1895 | for (c = acmdtab; c->name; c++) { |
1896 | if (c->help) | |
1897 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
e04c2d50 | 1898 | else |
f43df819 MW |
1899 | a_info(a, "%s", c->name, A_END); |
1900 | } | |
3cdc3f3a | 1901 | a_ok(a); |
410c8acf | 1902 | } |
1903 | ||
1904 | /*----- Connection handling -----------------------------------------------*/ | |
1905 | ||
c511e1f9 | 1906 | /* --- @a_destroypending@ --- * |
410c8acf | 1907 | * |
c511e1f9 | 1908 | * Arguments: --- |
fd3cf232 | 1909 | * |
1910 | * Returns: --- | |
1911 | * | |
c511e1f9 | 1912 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 1913 | */ |
1914 | ||
c511e1f9 | 1915 | static void a_destroypending(void) |
410c8acf | 1916 | { |
c511e1f9 | 1917 | admin *a, *aa; |
de014da6 | 1918 | admin_bgop *bg, *bbg; |
be6a1b7a | 1919 | admin_service *svc, *ssvc; |
de014da6 | 1920 | |
c511e1f9 | 1921 | /* --- Destroy connections marked as pending --- */ |
fd3cf232 | 1922 | |
c511e1f9 MW |
1923 | for (a = a_dead; a; a = aa) { |
1924 | aa = a->next; | |
1925 | assert(a->f & AF_DEAD); | |
1926 | ||
1927 | /* --- Report what we're doing --- */ | |
1928 | ||
1929 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", | |
1930 | a->seq); ) | |
1931 | ||
1932 | /* --- Abort any background jobs in progress --- */ | |
1933 | ||
1934 | for (bg = a->bg; bg; bg = bbg) { | |
1935 | bbg = bg->next; | |
1936 | bg->cancel(bg); | |
1937 | if (bg->tag) xfree(bg->tag); | |
1938 | xfree(bg); | |
1939 | } | |
1940 | ||
5d46c0f8 | 1941 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a MW |
1942 | |
1943 | for (svc = a->svcs; svc; svc = ssvc) { | |
1944 | ssvc = svc->next; | |
1945 | a_svcrelease(svc); | |
1946 | } | |
5d46c0f8 | 1947 | a_jobtablefinal(&a->j); |
be6a1b7a | 1948 | |
c511e1f9 MW |
1949 | /* --- Close file descriptors and selectory --- */ |
1950 | ||
1951 | selbuf_destroy(&a->b); | |
1952 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
1953 | close(a->w.fd); | |
1954 | if (a_stdin == a) a_stdin = 0; | |
1955 | ||
1956 | /* --- Done --- */ | |
1957 | ||
1958 | DESTROY(a); | |
410c8acf | 1959 | } |
410c8acf | 1960 | |
c511e1f9 | 1961 | /* --- All pending destruction completed --- */ |
060ca767 | 1962 | |
c511e1f9 | 1963 | a_dead = 0; |
060ca767 | 1964 | } |
1965 | ||
fd3cf232 | 1966 | /* --- @a_destroy@ --- * |
1967 | * | |
1968 | * Arguments: @admin *a@ = pointer to an admin block | |
1969 | * | |
1970 | * Returns: --- | |
1971 | * | |
1972 | * Use: Destroys an admin block. This requires a certain amount of | |
1973 | * care. | |
1974 | */ | |
1975 | ||
de014da6 | 1976 | static void freequeue(oqueue *q) |
1977 | { | |
1978 | obuf *o, *oo; | |
1979 | ||
1980 | for (o = q->hd; o; o = oo) { | |
1981 | oo = o->next; | |
1982 | xfree(o); | |
1983 | } | |
1984 | q->hd = q->tl = 0; | |
1985 | } | |
1986 | ||
fd3cf232 | 1987 | static void a_destroy(admin *a) |
1988 | { | |
fd3cf232 | 1989 | if (a->f & AF_DEAD) |
1990 | return; | |
1991 | ||
c511e1f9 MW |
1992 | if (a->next) a->next->prev = a->prev; |
1993 | if (a->prev) a->prev->next = a->next; | |
1994 | else admins = a->next; | |
fd3cf232 | 1995 | |
c511e1f9 | 1996 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 1997 | freequeue(&a->out); |
fd3cf232 | 1998 | |
c511e1f9 MW |
1999 | a->f |= AF_DEAD; |
2000 | a->next = a_dead; | |
2001 | a_dead = a; | |
fd3cf232 | 2002 | |
c511e1f9 | 2003 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2004 | } |
2005 | ||
410c8acf | 2006 | /* --- @a_line@ --- * |
2007 | * | |
2008 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2009 | * @size_t len@ = length of the line |
410c8acf | 2010 | * @void *vp@ = pointer to my admin block |
2011 | * | |
2012 | * Returns: --- | |
2013 | * | |
2014 | * Use: Handles a line of input. | |
2015 | */ | |
2016 | ||
3008eabf | 2017 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2018 | { |
2019 | admin *a = vp; | |
2020 | const acmd *c; | |
3cdc3f3a | 2021 | char *av[16]; |
410c8acf | 2022 | size_t ac; |
2023 | ||
8d0c7a83 | 2024 | TIMER; |
fd3cf232 | 2025 | if (a->f & AF_DEAD) |
2026 | return; | |
410c8acf | 2027 | if (!p) { |
de014da6 | 2028 | if (!a->bg) |
2029 | a_destroy(a); | |
2030 | else { | |
2031 | a->f |= AF_CLOSE; | |
2032 | selbuf_disable(&a->b); | |
2033 | } | |
410c8acf | 2034 | return; |
2035 | } | |
3cdc3f3a | 2036 | ac = str_qsplit(p, av, 16, 0, STRF_QUOTE); |
410c8acf | 2037 | if (!ac) |
2038 | return; | |
410c8acf | 2039 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2040 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2041 | ac--; |
f43df819 MW |
2042 | if (c->argmin > ac || ac > c->argmax) { |
2043 | if (!c->help) | |
2044 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
e04c2d50 | 2045 | else |
f43df819 | 2046 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); |
c511e1f9 | 2047 | } else |
410c8acf | 2048 | c->func(a, ac, av + 1); |
2049 | return; | |
2050 | } | |
2051 | } | |
f43df819 | 2052 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2053 | } |
2054 | ||
2055 | /* --- @a_create@ --- * | |
2056 | * | |
2057 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2058 | * @unsigned f@ = initial flags to set |
410c8acf | 2059 | * |
2060 | * Returns: --- | |
2061 | * | |
2062 | * Use: Creates a new admin connection. | |
2063 | */ | |
2064 | ||
3cdc3f3a | 2065 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2066 | { |
2067 | admin *a = CREATE(admin); | |
3cdc3f3a | 2068 | |
93bee2c4 | 2069 | T( static unsigned seq = 0; |
2070 | a->seq = seq++; ) | |
410c8acf | 2071 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2072 | a->bg = 0; |
042d5c20 | 2073 | a->ref = 0; |
be6a1b7a | 2074 | a->svcs = 0; |
5d46c0f8 | 2075 | a_jobtableinit(&a->j); |
3cdc3f3a | 2076 | a->f = f; |
de014da6 | 2077 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2078 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2079 | if (fd_out != fd_in) |
fd3cf232 | 2080 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2081 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2082 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2083 | a->out.hd = a->out.tl = 0; |
410c8acf | 2084 | a->next = admins; |
2085 | a->prev = 0; | |
de014da6 | 2086 | if (admins) admins->prev = a; |
410c8acf | 2087 | admins = a; |
2088 | } | |
2089 | ||
2090 | /* --- @a_accept@ --- * | |
2091 | * | |
2092 | * Arguments: @int fd@ = file descriptor to accept | |
2093 | * @unsigned mode@ = what to do | |
2094 | * @void *v@ = uninteresting pointer | |
2095 | * | |
2096 | * Returns: --- | |
2097 | * | |
2098 | * Use: Accepts a new admin connection. | |
2099 | */ | |
2100 | ||
2101 | static void a_accept(int fd, unsigned mode, void *v) | |
2102 | { | |
2103 | int nfd; | |
2104 | struct sockaddr_un sun; | |
2105 | size_t sz = sizeof(sun); | |
2106 | ||
2107 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2108 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2109 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2110 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2111 | return; |
2112 | } | |
3cdc3f3a | 2113 | a_create(nfd, nfd, 0); |
410c8acf | 2114 | } |
2115 | ||
c511e1f9 MW |
2116 | /* --- @a_preselect@ --- * |
2117 | * | |
2118 | * Arguments: --- | |
2119 | * | |
2120 | * Returns: --- | |
2121 | * | |
2122 | * Use: Informs the admin module that we're about to select again, | |
2123 | * and that it should do cleanup things it has delayed until a | |
2124 | * `safe' time. | |
2125 | */ | |
2126 | ||
2127 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2128 | ||
410c8acf | 2129 | /* --- @a_daemon@ --- * |
2130 | * | |
2131 | * Arguments: --- | |
2132 | * | |
2133 | * Returns: --- | |
2134 | * | |
2135 | * Use: Informs the admin module that it's a daemon. | |
2136 | */ | |
2137 | ||
f98df549 | 2138 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2139 | |
2140 | /* --- @a_init@ --- * | |
2141 | * | |
2142 | * Arguments: @const char *name@ = socket name to create | |
2143 | * | |
2144 | * Returns: --- | |
2145 | * | |
2146 | * Use: Creates the admin listening socket. | |
2147 | */ | |
2148 | ||
2149 | void a_init(const char *name) | |
2150 | { | |
2151 | int fd; | |
2152 | int n = 5; | |
2153 | struct sockaddr_un sun; | |
2154 | struct sigaction sa; | |
2155 | size_t sz; | |
2156 | ||
be6a1b7a MW |
2157 | /* --- Create services table --- */ |
2158 | ||
2159 | sym_create(&a_svcs); | |
2160 | ||
410c8acf | 2161 | /* --- Set up the socket address --- */ |
2162 | ||
2163 | sz = strlen(name) + 1; | |
2164 | if (sz > sizeof(sun.sun_path)) | |
2165 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
2166 | BURN(sun); | |
2167 | sun.sun_family = AF_UNIX; | |
2168 | memcpy(sun.sun_path, name, sz); | |
2169 | sz += offsetof(struct sockaddr_un, sun_path); | |
2170 | ||
2171 | /* --- Attempt to bind to the socket --- */ | |
2172 | ||
2173 | umask(0077); | |
2174 | again: | |
2175 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
2176 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
2177 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
2178 | struct stat st; | |
2179 | int e = errno; | |
2180 | if (errno != EADDRINUSE) { | |
2181 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
2182 | sun.sun_path, strerror(e)); | |
2183 | } | |
2184 | if (!n) | |
2185 | die(EXIT_FAILURE, "too many retries; giving up"); | |
2186 | n--; | |
2187 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
2188 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
2189 | sun.sun_path); | |
2190 | } | |
2191 | if (errno != ECONNREFUSED) | |
2192 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
2193 | if (stat(sun.sun_path, &st)) { | |
2194 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
2195 | sun.sun_path, strerror(errno)); | |
2196 | } | |
2197 | if (!S_ISSOCK(st.st_mode)) | |
2198 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 2199 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2200 | unlink(sun.sun_path); |
2201 | close(fd); | |
2202 | goto again; | |
2203 | } | |
2204 | chmod(sun.sun_path, 0600); | |
2205 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
2206 | if (listen(fd, 5)) | |
2207 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
2208 | ||
2209 | /* --- Listen to the socket --- */ | |
2210 | ||
2211 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2212 | sel_addfile(&sock); | |
2213 | sockname = name; | |
2214 | bres_init(&sel); | |
2215 | T( trace_custom(a_trace, 0); | |
2216 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2217 | flags |= F_INIT; | |
2218 | ||
2219 | /* --- Set up signal handlers --- */ | |
2220 | ||
2221 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2222 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 2223 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 2224 | sigaction(SIGINT, 0, &sa); |
2225 | if (sa.sa_handler != SIG_IGN) | |
2226 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2227 | } | |
2228 | ||
2229 | /*----- That's all, folks -------------------------------------------------*/ |