Commit | Line | Data |
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410c8acf | 1 | /* -*-c-*- |
410c8acf | 2 | * |
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 | |
46dde080 | 73 | #define F_FOREGROUND 4u |
410c8acf | 74 | |
75 | #define T_RESOLVE SEC(30) | |
0ba8de86 | 76 | #define T_PING SEC(5) |
410c8acf | 77 | |
fd3cf232 | 78 | static void a_destroy(admin */*a*/); |
fd3cf232 | 79 | |
060ca767 | 80 | #define BOOL(x) ((x) ? "t" : "nil") |
81 | ||
fd3cf232 | 82 | /*----- Output functions --------------------------------------------------*/ |
83 | ||
84 | /* --- @trywrite@ --- * | |
85 | * | |
86 | * Arguments: @admin *a@ = pointer to an admin block | |
87 | * @const char *p@ = pointer to buffer to write | |
88 | * @size_t sz@ = size of data to write | |
89 | * | |
90 | * Returns: The number of bytes written, or less than zero on error. | |
91 | * | |
92 | * Use: Attempts to write data to a client. | |
93 | */ | |
94 | ||
95 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
96 | { | |
97 | ssize_t n, done = 0; | |
98 | ||
99 | again: | |
100 | if (!sz) | |
101 | return (done); | |
102 | n = write(a->w.fd, p, sz); | |
103 | if (n > 0) { | |
104 | done += n; | |
105 | p += n; | |
106 | sz -= n; | |
107 | goto again; | |
108 | } | |
109 | if (n < 0) { | |
110 | if (errno == EINTR) | |
111 | goto again; | |
112 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
113 | a_destroy(a); | |
f43df819 | 114 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 115 | return (-1); |
116 | } | |
117 | } | |
118 | return (done); | |
119 | } | |
120 | ||
de014da6 | 121 | /* --- @doqueue@ -- * |
fd3cf232 | 122 | * |
de014da6 | 123 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 124 | * @const char *p@ = pointer to buffer to write |
de014da6 | 125 | * @size_t sz@ = size of buffer |
fd3cf232 | 126 | * |
de014da6 | 127 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 128 | * |
de014da6 | 129 | * Use: Queues data to be written later. |
fd3cf232 | 130 | */ |
131 | ||
de014da6 | 132 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 133 | { |
fd3cf232 | 134 | obuf *o; |
de014da6 | 135 | int rc = 0; |
136 | size_t n; | |
fd3cf232 | 137 | |
de014da6 | 138 | o = q->tl; |
fd3cf232 | 139 | if (!o) |
de014da6 | 140 | rc = 1; |
fd3cf232 | 141 | else if (o->p_in < o->buf + OBUFSZ) |
142 | goto noalloc; | |
143 | ||
144 | do { | |
145 | o = xmalloc(sizeof(obuf)); | |
146 | o->next = 0; | |
147 | o->p_in = o->p_out = o->buf; | |
de014da6 | 148 | if (q->tl) |
149 | q->tl->next = o; | |
fd3cf232 | 150 | else |
de014da6 | 151 | q->hd = o; |
152 | q->tl = o; | |
fd3cf232 | 153 | |
154 | noalloc: | |
155 | n = o->buf + OBUFSZ - o->p_in; | |
156 | if (n > sz) | |
157 | n = sz; | |
158 | memcpy(o->p_in, p, n); | |
159 | o->p_in += n; | |
160 | p += n; | |
161 | sz -= n; | |
162 | } while (sz); | |
de014da6 | 163 | |
164 | return (rc); | |
165 | } | |
166 | ||
167 | /* --- @dosend@ --- * | |
168 | * | |
169 | * Arguemnts: @admin *a@ = pointer to an admin block | |
170 | * @const char *p@ = pointer to buffer to write | |
171 | * @size_t sz@ = size of data to write | |
172 | * | |
173 | * Returns: --- | |
174 | * | |
175 | * Use: Sends data to an admin client. | |
176 | */ | |
177 | ||
178 | static void dosend(admin *a, const char *p, size_t sz) | |
179 | { | |
180 | ssize_t n; | |
181 | ||
182 | if (a->f & AF_DEAD) | |
183 | return; | |
184 | if (!a->out.hd) { | |
185 | if ((n = trywrite(a, p, sz)) < 0) | |
186 | return; | |
187 | p += n; | |
188 | sz -= n; | |
189 | if (!sz) | |
190 | return; | |
191 | } | |
192 | if (doqueue(&a->out, p, sz)) | |
193 | sel_addfile(&a->w); | |
fd3cf232 | 194 | } |
195 | ||
196 | /* --- @a_flush@ --- * | |
197 | * | |
198 | * Arguments: @int fd@ = file descriptor | |
199 | * @unsigned mode@ = what's happening | |
200 | * @void *v@ = pointer to my admin block | |
201 | * | |
202 | * Returns: --- | |
203 | * | |
204 | * Use: Flushes buffers when a client is ready to read again. | |
205 | */ | |
206 | ||
207 | static void a_flush(int fd, unsigned mode, void *v) | |
208 | { | |
209 | admin *a = v; | |
210 | obuf *o, *oo; | |
211 | ssize_t n; | |
212 | ||
de014da6 | 213 | o = a->out.hd; |
fd3cf232 | 214 | while (o) { |
215 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
216 | return; | |
217 | o->p_out += n; | |
218 | if (o->p_in < o->p_out) | |
219 | break; | |
220 | oo = o; | |
221 | o = o->next; | |
222 | xfree(oo); | |
223 | } | |
de014da6 | 224 | a->out.hd = o; |
fd3cf232 | 225 | if (!o) { |
de014da6 | 226 | a->out.tl = 0; |
fd3cf232 | 227 | sel_rmfile(&a->w); |
228 | } | |
229 | } | |
230 | ||
410c8acf | 231 | /*----- Utility functions -------------------------------------------------*/ |
232 | ||
f43df819 MW |
233 | /* --- @a_vformat@ --- * |
234 | * | |
235 | * Arguments: @dstr *d@ = where to leave the formatted message | |
236 | * @const char *fmt@ = pointer to format string | |
237 | * @va_list ap@ = arguments in list | |
238 | * | |
239 | * Returns: --- | |
240 | * | |
241 | * Use: Main message token formatting driver. | |
242 | */ | |
243 | ||
244 | static void a_vformat(dstr *d, const char *fmt, va_list ap) | |
245 | { | |
246 | dstr dd = DSTR_INIT; | |
247 | ||
248 | while (fmt) { | |
249 | if (*fmt == '*') { | |
250 | dstr_putc(d, ' '); | |
251 | dstr_vputf(d, fmt + 1, &ap); | |
252 | } else if (*fmt == '?') { | |
253 | if (strcmp(fmt, "?ADDR") == 0) { | |
254 | const addr *a = va_arg(ap, const addr *); | |
255 | switch (a->sa.sa_family) { | |
256 | case AF_INET: | |
0ed0735f MW |
257 | u_quotify(d, "INET"); |
258 | u_quotify(d, inet_ntoa(a->sin.sin_addr)); | |
f43df819 MW |
259 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); |
260 | break; | |
261 | default: | |
262 | abort(); | |
263 | } | |
264 | } else if (strcmp(fmt, "?B64") == 0) { | |
265 | const octet *p = va_arg(ap, const octet *); | |
266 | size_t n = va_arg(ap, size_t); | |
267 | base64_ctx b64; | |
268 | dstr_putc(d, ' '); | |
269 | base64_init(&b64); | |
270 | b64.indent = ""; | |
271 | b64.maxline = 0; | |
272 | base64_encode(&b64, p, n, d); | |
273 | base64_encode(&b64, 0, 0, d); | |
274 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
3331936b MW |
275 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
276 | const char *const *av = va_arg(ap, const char *const *); | |
0ed0735f | 277 | while (*av) u_quotify(d, *av++); |
f43df819 | 278 | } else if (strcmp(fmt, "?PEER") == 0) |
0ed0735f | 279 | u_quotify(d, p_name(va_arg(ap, peer *))); |
f43df819 MW |
280 | else if (strcmp(fmt, "?ERRNO") == 0) { |
281 | dstr_putf(d, " E%d", errno); | |
0ed0735f | 282 | u_quotify(d, strerror(errno)); |
f43df819 MW |
283 | } else |
284 | abort(); | |
285 | } else { | |
286 | if (*fmt == '!') fmt++; | |
287 | DRESET(&dd); | |
288 | dstr_vputf(&dd, fmt, &ap); | |
0ed0735f | 289 | u_quotify(d, dd.buf); |
f43df819 MW |
290 | } |
291 | fmt = va_arg(ap, const char *); | |
292 | } | |
293 | ||
294 | dstr_destroy(&dd); | |
295 | } | |
296 | ||
3cdc3f3a | 297 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 298 | * |
299 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 300 | * @const char *status@ = status code to report |
301 | * @const char *tag@ = tag string, or null | |
410c8acf | 302 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 303 | * @va_list ap@ = arguments in list |
410c8acf | 304 | * @...@ = other arguments |
305 | * | |
306 | * Returns: --- | |
307 | * | |
308 | * Use: Sends a message to an admin connection. | |
309 | */ | |
310 | ||
de014da6 | 311 | static void a_vwrite(admin *a, const char *status, const char *tag, |
312 | const char *fmt, va_list ap) | |
410c8acf | 313 | { |
410c8acf | 314 | dstr d = DSTR_INIT; |
f98df549 | 315 | |
de014da6 | 316 | if (tag) dstr_puts(&d, "BG"); |
317 | dstr_puts(&d, status); | |
0ed0735f | 318 | if (tag) u_quotify(&d, tag); |
f43df819 | 319 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 320 | dstr_putc(&d, '\n'); |
321 | dosend(a, d.buf, d.len); | |
322 | dstr_destroy(&d); | |
323 | } | |
324 | ||
de014da6 | 325 | static void a_write(admin *a, const char *status, const char *tag, |
326 | const char *fmt, ...) | |
3cdc3f3a | 327 | { |
328 | va_list ap; | |
f98df549 | 329 | |
410c8acf | 330 | va_start(ap, fmt); |
de014da6 | 331 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 332 | va_end(ap); |
3cdc3f3a | 333 | } |
334 | ||
335 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
336 | * | |
337 | * Arguments: @admin *a@ = connection | |
338 | * @const char *fmt@ = format string | |
339 | * @...@ = other arguments | |
340 | * | |
341 | * Returns: --- | |
342 | * | |
343 | * Use: Convenience functions for @a_write@. | |
344 | */ | |
345 | ||
f43df819 | 346 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 347 | |
348 | static void a_info(admin *a, const char *fmt, ...) | |
349 | { | |
350 | va_list ap; | |
f98df549 | 351 | |
3cdc3f3a | 352 | va_start(ap, fmt); |
de014da6 | 353 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 354 | va_end(ap); |
355 | } | |
356 | ||
357 | static void a_fail(admin *a, const char *fmt, ...) | |
358 | { | |
359 | va_list ap; | |
f98df549 | 360 | |
3cdc3f3a | 361 | va_start(ap, fmt); |
de014da6 | 362 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 363 | va_end(ap); |
364 | } | |
365 | ||
366 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
367 | * | |
368 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 369 | * @const char *status@ = status string |
3cdc3f3a | 370 | * @const char *fmt@ = pointer to format string |
de014da6 | 371 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 372 | * @size_t sz@ = size of raw string |
373 | * @va_list ap@ = arguments in list | |
374 | * @...@ = other arguments | |
375 | * | |
376 | * Returns: --- | |
377 | * | |
378 | * Use: Write a message to all admin connections matched by the given | |
379 | * filter. | |
380 | */ | |
381 | ||
de014da6 | 382 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 383 | const char *p, size_t sz) |
384 | { | |
385 | admin *a, *aa; | |
386 | dstr d = DSTR_INIT; | |
e04c2d50 | 387 | |
3cdc3f3a | 388 | if (!(flags & F_INIT)) |
389 | return; | |
de014da6 | 390 | dstr_puts(&d, status); |
391 | if (p) { | |
392 | dstr_putc(&d, ' '); | |
3cdc3f3a | 393 | dstr_putm(&d, p, sz); |
de014da6 | 394 | } |
3cdc3f3a | 395 | dstr_putc(&d, '\n'); |
396 | p = d.buf; | |
397 | sz = d.len; | |
398 | for (a = admins; a; a = aa) { | |
399 | aa = a->next; | |
400 | if ((a->f & f_and) == f_eq) | |
401 | dosend(a, d.buf, d.len); | |
402 | } | |
410c8acf | 403 | dstr_destroy(&d); |
404 | } | |
405 | ||
b9adb829 | 406 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 407 | const char *fmt, va_list ap) |
408 | { | |
409 | dstr d = DSTR_INIT; | |
410 | ||
411 | if (!(flags & F_INIT)) | |
412 | return; | |
f43df819 | 413 | a_vformat(&d, fmt, ap); |
b9adb829 | 414 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 415 | dstr_destroy(&d); |
416 | } | |
417 | ||
b9adb829 | 418 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 419 | const char *fmt, ...) |
420 | { | |
421 | va_list ap; | |
f98df549 | 422 | |
3cdc3f3a | 423 | va_start(ap, fmt); |
b9adb829 | 424 | a_valert(f_and, f_eq, status, fmt, ap); |
3cdc3f3a | 425 | va_end(ap); |
426 | } | |
3cdc3f3a | 427 | |
410c8acf | 428 | /* --- @a_warn@ --- * |
429 | * | |
430 | * Arguments: @const char *fmt@ = pointer to format string | |
431 | * @...@ = other arguments | |
432 | * | |
433 | * Returns: --- | |
434 | * | |
435 | * Use: Informs all admin connections of a warning. | |
436 | */ | |
437 | ||
438 | void a_warn(const char *fmt, ...) | |
439 | { | |
440 | va_list ap; | |
410c8acf | 441 | |
410c8acf | 442 | va_start(ap, fmt); |
3cdc3f3a | 443 | if (flags & F_INIT) |
444 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 445 | else { |
f43df819 | 446 | dstr d = DSTR_INIT; |
3cdc3f3a | 447 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
448 | a_vformat(&d, fmt, ap); |
449 | dstr_putc(&d, '\n'); | |
450 | dstr_write(&d, stderr); | |
451 | dstr_destroy(&d); | |
410c8acf | 452 | } |
3cdc3f3a | 453 | va_end(ap); |
410c8acf | 454 | } |
455 | ||
456 | /* --- @a_trace@ --- * | |
457 | * | |
458 | * Arguments: @const char *p@ = pointer to a buffer | |
459 | * @size_t sz@ = size of the buffer | |
460 | * @void *v@ = uninteresting pointer | |
461 | * | |
462 | * Returns: --- | |
463 | * | |
3cdc3f3a | 464 | * Use: Custom trace output handler. Sends trace messages to |
465 | * interested admin connections. | |
410c8acf | 466 | */ |
467 | ||
468 | #ifndef NTRACE | |
469 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 470 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 471 | #endif |
472 | ||
3cdc3f3a | 473 | /* --- @a_notify@ --- * |
474 | * | |
475 | * Arguments: @const char *fmt@ = pointer to format string | |
476 | * @...@ = other arguments | |
477 | * | |
478 | * Returns: --- | |
479 | * | |
480 | * Use: Sends a notification to interested admin connections. | |
481 | */ | |
482 | ||
483 | void a_notify(const char *fmt, ...) | |
484 | { | |
485 | va_list ap; | |
486 | ||
487 | va_start(ap, fmt); | |
488 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
489 | va_end(ap); | |
490 | } | |
491 | ||
410c8acf | 492 | /* --- @a_quit@ --- * |
493 | * | |
494 | * Arguments: --- | |
495 | * | |
496 | * Returns: --- | |
497 | * | |
498 | * Use: Shuts things down nicely. | |
499 | */ | |
500 | ||
501 | void a_quit(void) | |
502 | { | |
503 | close(sock.fd); | |
504 | unlink(sockname); | |
c8e02c8a | 505 | FOREACH_PEER(p, { p_destroy(p); }); |
410c8acf | 506 | exit(0); |
507 | } | |
508 | ||
509 | /* --- @a_sigdie@ --- * | |
510 | * | |
511 | * Arguments: @int sig@ = signal number | |
512 | * @void *v@ = an uninteresting argument | |
513 | * | |
514 | * Returns: --- | |
515 | * | |
516 | * Use Shuts down on receipt of a fatal signal. | |
517 | */ | |
518 | ||
519 | static void a_sigdie(int sig, void *v) | |
520 | { | |
521 | char *p; | |
522 | char buf[20]; | |
523 | ||
524 | switch (sig) { | |
525 | case SIGTERM: p = "SIGTERM"; break; | |
526 | case SIGINT: p = "SIGINT"; break; | |
527 | default: | |
3cdc3f3a | 528 | sprintf(buf, "%i", sig); |
410c8acf | 529 | p = buf; |
530 | break; | |
531 | } | |
f43df819 | 532 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 533 | a_quit(); |
534 | } | |
535 | ||
536 | /* --- @a_sighup@ --- * | |
537 | * | |
538 | * Arguments: @int sig@ = signal number | |
539 | * @void *v@ = an uninteresting argument | |
540 | * | |
541 | * Returns: --- | |
542 | * | |
543 | * Use Logs a message about SIGHUP not being useful. | |
544 | */ | |
545 | ||
546 | static void a_sighup(int sig, void *v) | |
f98df549 | 547 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 548 | |
0ba8de86 | 549 | /* --- @a_parsetime@ --- * |
550 | * | |
551 | * Arguments; @const char *p@ = time string to parse | |
552 | * | |
553 | * Returns: Time in seconds, or @< 0@ on error. | |
554 | */ | |
555 | ||
556 | static long a_parsetime(const char *p) | |
557 | { | |
558 | char *q; | |
559 | long t = strtol(p, &q, 0); | |
560 | ||
561 | switch (*q) { | |
562 | case 'd': t *= 24; | |
563 | case 'h': t *= 60; | |
564 | case 'm': t *= 60; | |
565 | case 's': if (q[1] != 0) | |
e04c2d50 | 566 | default: t = -1; |
0ba8de86 | 567 | case 0: break; |
568 | } | |
e04c2d50 | 569 | return (t); |
0ba8de86 | 570 | } |
571 | ||
37941236 | 572 | /* --- @a_findpeer@ --- * |
573 | * | |
574 | * Arguments: @admin *a@ = admin connection | |
575 | * @const char *pn@ = peer name | |
576 | * | |
577 | * Returns: The peer, or null if not there. | |
578 | * | |
579 | * Use: Finds a peer, reporting an error if it failed. | |
580 | */ | |
581 | ||
582 | static peer *a_findpeer(admin *a, const char *pn) | |
583 | { | |
584 | peer *p; | |
585 | ||
586 | if ((p = p_find(pn)) == 0) | |
f43df819 | 587 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 588 | return (p); |
589 | } | |
590 | ||
de014da6 | 591 | /*----- Backgrounded operations -------------------------------------------*/ |
592 | ||
060ca767 | 593 | #define BGTAG(bg) \ |
594 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
595 | ||
ff92ffd3 MW |
596 | /* --- @a_bgfind@ --- * |
597 | * | |
598 | * Arguments: @admin *a@ = a client block | |
599 | * @const char *tag@ = the requested tag | |
600 | * | |
601 | * Returns: The requested background job, or null. | |
602 | */ | |
603 | ||
604 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
605 | { | |
606 | admin_bgop *bg; | |
607 | ||
608 | for (bg = a->bg; bg; bg = bg->next) { | |
609 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
610 | return (bg); | |
611 | } | |
612 | return (0); | |
613 | } | |
614 | ||
de014da6 | 615 | /* --- @a_bgrelease@ --- * |
616 | * | |
617 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
618 | * | |
619 | * Returns: --- | |
620 | * | |
621 | * Use: Removes a backgrounded operation from the queue, since | |
622 | * (presumably) it's done. | |
623 | */ | |
624 | ||
625 | static void a_bgrelease(admin_bgop *bg) | |
626 | { | |
627 | admin *a = bg->a; | |
628 | ||
060ca767 | 629 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
630 | if (bg->tag) xfree(bg->tag); | |
631 | else selbuf_enable(&a->b); | |
632 | if (bg->next) bg->next->prev = bg->prev; | |
633 | if (bg->prev) bg->prev->next = bg->next; | |
634 | else a->bg = bg->next; | |
de014da6 | 635 | xfree(bg); |
547a9c13 | 636 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 637 | } |
638 | ||
639 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
640 | * | |
641 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
642 | * @const char *fmt@ = format string | |
643 | * @...@ = other arguments | |
644 | * | |
645 | * Returns: --- | |
646 | * | |
647 | * Use: Convenience functions for @a_write@. | |
648 | */ | |
649 | ||
650 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 651 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 652 | |
653 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
654 | { | |
655 | va_list ap; | |
656 | va_start(ap, fmt); | |
657 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
658 | va_end(ap); | |
659 | } | |
660 | ||
661 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
662 | { | |
663 | va_list ap; | |
664 | va_start(ap, fmt); | |
665 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
666 | va_end(ap); | |
667 | } | |
668 | ||
669 | /* --- @a_bgadd@ --- * | |
670 | * | |
671 | * Arguments: @admin *a@ = administration connection | |
672 | * @admin_bgop *bg@ = pointer to background operation | |
673 | * @const char *tag@ = background tag, or null for foreground | |
674 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
675 | * | |
ff92ffd3 | 676 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 677 | * |
678 | * Use: Links a background job into the list. | |
679 | */ | |
680 | ||
ff92ffd3 MW |
681 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
682 | void (*cancel)(admin_bgop *)) | |
de014da6 | 683 | { |
ff92ffd3 MW |
684 | if (tag) { |
685 | if (a_bgfind(a, tag)) { | |
686 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
687 | return (-1); | |
688 | } | |
de014da6 | 689 | bg->tag = xstrdup(tag); |
ff92ffd3 | 690 | } |
de014da6 | 691 | else { |
692 | bg->tag = 0; | |
693 | selbuf_disable(&a->b); | |
694 | } | |
695 | bg->a = a; | |
696 | bg->cancel = cancel; | |
697 | bg->next = a->bg; | |
698 | bg->prev = 0; | |
060ca767 | 699 | if (a->bg) a->bg->prev = bg; |
de014da6 | 700 | a->bg = bg; |
060ca767 | 701 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 702 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 703 | return (0); |
de014da6 | 704 | } |
705 | ||
5d46c0f8 MW |
706 | /*----- Job table manipulation --------------------------------------------*/ |
707 | ||
708 | #define JOB_SHIFT 16 | |
709 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
710 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
711 | ||
712 | #define JOB_END 0xfffffffful | |
713 | ||
714 | static unsigned long a_joboffset; | |
715 | ||
716 | /* --- @a_jobidencode@ --- * | |
717 | * | |
718 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
719 | * | |
720 | * Returns: A jobid for this job, in an internal static buffer. | |
721 | * | |
722 | * Use: Constructs a jobid. In order to dissuade people from | |
723 | * predicting jobids, we obfuscate them. | |
724 | * | |
725 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
726 | * are an index into a big array. The high 16 bits are a | |
727 | * sequence number recording how many times that slot has been | |
728 | * reused. | |
729 | * | |
730 | * This `raw' jobid is then obfuscated by adding a randomly- | |
731 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
732 | * odd constant. | |
733 | */ | |
734 | ||
735 | static const char *a_jobidencode(admin_svcop *svc) | |
736 | { | |
737 | admin_jobtable *j = &svc->prov->j; | |
738 | static char buf[10]; | |
739 | unsigned long pre; | |
740 | unsigned seq; | |
741 | ||
742 | assert(svc->index <= JOB_INDEXMASK); | |
743 | seq = j->v[svc->index].seq; | |
744 | assert(seq <= JOB_SEQMASK); | |
745 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
746 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
747 | return (buf); | |
748 | } | |
749 | ||
750 | /* --- @a_jobiddecode@ --- * | |
751 | * | |
752 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
753 | * @const char *jid@ = pointer to a jobid string | |
754 | * | |
755 | * Returns: A pointer to the job's @svcop@ structure. | |
756 | */ | |
757 | ||
758 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
759 | { | |
760 | unsigned i; | |
761 | unsigned long pre; | |
762 | ||
763 | if (jid[0] != 'J') | |
764 | return (0); | |
765 | for (i = 1; i < 9; i++) { | |
766 | if (!isxdigit((unsigned char)jid[i])) | |
767 | return (0); | |
768 | } | |
769 | if (jid[9] != 0) | |
770 | return (0); | |
771 | pre = strtoul(jid + 1, 0, 16); | |
772 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
773 | i = pre & JOB_INDEXMASK; | |
774 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
775 | return (0); | |
776 | return (j->v[i].u.op); | |
777 | } | |
778 | ||
779 | /* --- @a_jobcreate@ --- * | |
780 | * | |
781 | * Arguments: @admin *a@ = pointer to administration client | |
782 | * | |
783 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
784 | * | |
785 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
786 | */ | |
787 | ||
788 | static admin_svcop *a_jobcreate(admin *a) | |
789 | { | |
790 | admin_svcop *svc; | |
791 | unsigned i; | |
792 | unsigned sz; | |
793 | admin_jobtable *j = &a->j; | |
794 | ||
795 | if (j->free != JOB_END) { | |
796 | i = j->free; | |
797 | j->free = j->v[i].u.next; | |
798 | } else { | |
799 | if (j->n == j->sz) { | |
800 | if (j->sz > JOB_INDEXMASK) | |
801 | return (0); | |
802 | sz = j->sz; | |
803 | if (!sz) { | |
804 | j->sz = 16; | |
805 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
806 | } else { | |
807 | j->sz = sz << 1; | |
808 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
809 | } | |
810 | } | |
811 | i = j->n++; | |
812 | j->v[i].seq = 0; | |
813 | } | |
814 | svc = xmalloc(sizeof(*svc)); | |
815 | svc->index = i; | |
816 | svc->prov = a; | |
817 | svc->next = j->active; | |
818 | svc->prev = 0; | |
819 | if (j->active) j->active->prev = svc; | |
820 | j->active = svc; | |
821 | j->v[i].u.op = svc; | |
822 | IF_TRACING(T_ADMIN, { | |
823 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
824 | }) | |
825 | return (svc); | |
826 | } | |
827 | ||
828 | /* --- @a_jobdestroy@ --- * | |
829 | * | |
830 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
831 | * | |
832 | * Returns: --- | |
833 | * | |
834 | * Use: Frees up a completed (or cancelled) job. | |
835 | */ | |
836 | ||
837 | static void a_jobdestroy(admin_svcop *svc) | |
838 | { | |
839 | admin *a = svc->prov; | |
840 | admin_jobtable *j = &a->j; | |
841 | unsigned i = svc->index; | |
842 | ||
843 | IF_TRACING(T_ADMIN, { | |
844 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
845 | }) | |
846 | assert(j->v[i].u.op = svc); | |
847 | j->v[i].u.next = j->free; | |
848 | j->v[i].seq++; | |
849 | j->free = i; | |
850 | if (svc->next) svc->next->prev = svc->prev; | |
851 | if (svc->prev) svc->prev->next = svc->next; | |
852 | else j->active = svc->next; | |
853 | } | |
854 | ||
855 | /* --- @a_jobtableinit@ --- * | |
856 | * | |
857 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
858 | * | |
859 | * Returns: --- | |
860 | * | |
861 | * Use: Initializes a job table. | |
862 | */ | |
863 | ||
864 | static void a_jobtableinit(admin_jobtable *j) | |
865 | { | |
866 | if (!a_joboffset) | |
867 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
868 | j->n = j->sz = 0; | |
869 | j->active = 0; | |
870 | j->free = JOB_END; | |
871 | j->v = 0; | |
872 | } | |
873 | ||
874 | /* --- @a_jobtablefinal@ --- * | |
875 | * | |
876 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
877 | * | |
878 | * Returns: --- | |
879 | * | |
880 | * Use: Closes down a job table. | |
881 | */ | |
882 | ||
883 | static void a_jobtablefinal(admin_jobtable *j) | |
884 | { | |
885 | admin_svcop *svc, *ssvc; | |
886 | ||
887 | for (svc = j->active; svc; svc = ssvc) { | |
888 | ssvc = svc->next; | |
889 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
890 | a_bgrelease(&svc->bg); | |
891 | } | |
892 | if (j->v) xfree(j->v); | |
893 | } | |
894 | ||
be6a1b7a MW |
895 | /*----- Services infrastructure -------------------------------------------*/ |
896 | ||
897 | /* --- @a_svcfind@ --- * | |
898 | * | |
899 | * Arguments: @admin *a@ = the requesting client | |
900 | * @const char *name@ = service name wanted | |
901 | * | |
902 | * Returns: The service requested, or null. | |
903 | * | |
904 | * Use: Finds a service; reports an error if the service couldn't be | |
905 | * found. | |
906 | */ | |
907 | ||
908 | static admin_service *a_svcfind(admin *a, const char *name) | |
909 | { | |
910 | admin_service *svc; | |
911 | ||
912 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
913 | a_fail(a, "unknown-service", "%s", name, A_END); | |
914 | return (0); | |
915 | } | |
916 | return (svc); | |
917 | } | |
918 | ||
919 | /* --- @a_svcunlink@ --- * | |
920 | * | |
921 | * Arguments: @admin_service *svc@ = pointer to service structure | |
922 | * | |
923 | * Returns: --- | |
924 | * | |
925 | * Use: Unlinks the service from its provider, without issuing a | |
926 | * message or freeing the structure. The version string is | |
927 | * freed, however. | |
928 | */ | |
929 | ||
930 | static void a_svcunlink(admin_service *svc) | |
931 | { | |
932 | if (svc->next) | |
933 | svc->next->prev = svc->prev; | |
934 | if (svc->prev) | |
935 | svc->prev->next = svc->next; | |
936 | else | |
937 | svc->prov->svcs = svc->next; | |
938 | xfree(svc->version); | |
939 | } | |
940 | ||
941 | /* --- @a_svcrelease@ --- * | |
942 | * | |
943 | * Arguments: @admin_service *svc@ = pointer to service structure | |
944 | * | |
945 | * Returns: --- | |
946 | * | |
947 | * Use: Releases a service and frees its structure. | |
948 | */ | |
949 | ||
950 | static void a_svcrelease(admin_service *svc) | |
951 | { | |
952 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
953 | a_svcunlink(svc); | |
954 | sym_remove(&a_svcs, svc); | |
de014da6 | 955 | } |
956 | ||
37941236 | 957 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 958 | |
37941236 | 959 | /* --- @a_resolved@ --- * |
de014da6 | 960 | * |
37941236 | 961 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
962 | * @void *v@ = pointer to resolver operation | |
de014da6 | 963 | * |
964 | * Returns: --- | |
965 | * | |
37941236 | 966 | * Use: Handles a completed name resolution. |
de014da6 | 967 | */ |
968 | ||
37941236 | 969 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 970 | { |
37941236 | 971 | admin_resop *r = v; |
972 | ||
973 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
974 | TIMER; | |
975 | if (!h) { | |
f43df819 | 976 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 977 | r->func(r, ARES_FAIL); |
978 | } else { | |
979 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
980 | r->func(r, ARES_OK); | |
981 | } | |
982 | sel_rmtimer(&r->t); | |
983 | xfree(r->addr); | |
984 | a_bgrelease(&r->bg); | |
e04c2d50 | 985 | } |
de014da6 | 986 | |
37941236 | 987 | /* --- @a_restimer@ --- * |
de014da6 | 988 | * |
37941236 | 989 | * Arguments: @struct timeval *tv@ = timer |
990 | * @void *v@ = pointer to resolver operation | |
de014da6 | 991 | * |
992 | * Returns: --- | |
993 | * | |
37941236 | 994 | * Use: Times out a resolver. |
de014da6 | 995 | */ |
996 | ||
37941236 | 997 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 998 | { |
37941236 | 999 | admin_resop *r = v; |
1000 | ||
1001 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1002 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1003 | r->func(r, ARES_FAIL); |
1004 | bres_abort(&r->r); | |
1005 | xfree(r->addr); | |
1006 | a_bgrelease(&r->bg); | |
de014da6 | 1007 | } |
1008 | ||
37941236 | 1009 | /* --- @a_rescancel@ --- * |
de014da6 | 1010 | * |
37941236 | 1011 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1012 | * |
1013 | * Returns: --- | |
1014 | * | |
37941236 | 1015 | * Use: Cancels an add operation. |
de014da6 | 1016 | */ |
1017 | ||
37941236 | 1018 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1019 | { |
37941236 | 1020 | admin_resop *r = (admin_resop *)bg; |
1021 | ||
1022 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1023 | r->func(r, ARES_FAIL); | |
1024 | sel_rmtimer(&r->t); | |
1025 | xfree(r->addr); | |
1026 | bres_abort(&r->r); | |
de014da6 | 1027 | } |
37941236 | 1028 | |
1029 | /* --- @a_resolve@ --- * | |
410c8acf | 1030 | * |
37941236 | 1031 | * Arguments: @admin *a@ = administration connection |
1032 | * @admin_resop *r@ = resolver operation to run | |
1033 | * @const char *tag@ = background operation tag | |
1034 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1035 | * @unsigned ac@ = number of remaining arguments | |
1036 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1037 | * |
1038 | * Returns: --- | |
1039 | * | |
37941236 | 1040 | * Use: Cranks up a resolver job. |
410c8acf | 1041 | */ |
1042 | ||
37941236 | 1043 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1044 | void (*func)(struct admin_resop *, int), | |
1045 | unsigned ac, char *av[]) | |
410c8acf | 1046 | { |
37941236 | 1047 | struct timeval tv; |
1048 | unsigned long pt; | |
1049 | char *p; | |
1050 | int i = 0; | |
fd3cf232 | 1051 | |
37941236 | 1052 | /* --- Fill in the easy bits of address --- */ |
1053 | ||
452bf3f6 | 1054 | r->bg.tag = "<starting>"; |
37941236 | 1055 | r->addr = 0; |
1056 | r->func = func; | |
1057 | if (mystrieq(av[i], "inet")) i++; | |
165efde7 MW |
1058 | if (ac - i != 1 && ac - i != 2) { |
1059 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS [PORT]", A_END); | |
37941236 | 1060 | goto fail; |
1061 | } | |
1062 | r->sa.sin.sin_family = AF_INET; | |
1063 | r->sasz = sizeof(r->sa.sin); | |
1064 | r->addr = xstrdup(av[i]); | |
165efde7 MW |
1065 | if (!av[i + i]) |
1066 | pt = TRIPE_PORT; | |
1067 | else { | |
1068 | pt = strtoul(av[i + 1], &p, 0); | |
1069 | if (*p) { | |
1070 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1071 | if (!s) { | |
1072 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); | |
1073 | goto fail; | |
1074 | } | |
1075 | pt = ntohs(s->s_port); | |
37941236 | 1076 | } |
410c8acf | 1077 | } |
37941236 | 1078 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1079 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1080 | goto fail; |
1081 | } | |
1082 | r->sa.sin.sin_port = htons(pt); | |
1083 | ||
1084 | /* --- Report backgrounding --- * | |
1085 | * | |
1086 | * Do this for consistency of interface, even if we're going to get the | |
1087 | * answer straight away. | |
1088 | */ | |
1089 | ||
ff92ffd3 MW |
1090 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1091 | goto fail; | |
37941236 | 1092 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
1093 | a->seq, BGTAG(r), r->addr); ) | |
1094 | ||
1095 | /* --- If the name is numeric, do it the easy way --- */ | |
e04c2d50 | 1096 | |
37941236 | 1097 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { |
1098 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1099 | func(r, ARES_OK); | |
1100 | xfree(r->addr); | |
1101 | a_bgrelease(&r->bg); | |
1102 | return; | |
1103 | } | |
1104 | ||
1105 | /* --- Store everything for later and crank up the resolver --- */ | |
1106 | ||
1107 | gettimeofday(&tv, 0); | |
1108 | tv.tv_sec += T_RESOLVE; | |
1109 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
1110 | bres_byname(&r->r, r->addr, a_resolved, r); | |
1111 | return; | |
1112 | ||
1113 | fail: | |
1114 | func(r, ARES_FAIL); | |
1115 | if (r->addr) xfree(r->addr); | |
1116 | xfree(r); | |
410c8acf | 1117 | } |
1118 | ||
e7a4d919 MW |
1119 | /*----- Option parsing ----------------------------------------------------*/ |
1120 | ||
1121 | #define OPTIONS(argc, argv, guts) do { \ | |
1122 | char **o_av = argv; \ | |
1123 | for (;; o_av++) { \ | |
1124 | if (!*o_av) \ | |
1125 | break; \ | |
1126 | if (mystrieq(*o_av, "--")) { \ | |
1127 | o_av++; \ | |
1128 | break; \ | |
1129 | } \ | |
1130 | guts \ | |
1131 | if (**o_av == '-') \ | |
1132 | goto bad_syntax; \ | |
1133 | break; \ | |
1134 | } \ | |
1135 | argc -= o_av - argv; \ | |
1136 | argv = o_av; \ | |
1137 | } while (0) | |
1138 | ||
1139 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1140 | ||
1141 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1142 | const char *arg; \ | |
1143 | arg = *++o_av; \ | |
1144 | if (!arg) goto bad_syntax; \ | |
1145 | guts \ | |
1146 | }) | |
1147 | ||
1148 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1149 | long arg; \ | |
1150 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1151 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1152 | goto fail; \ | |
1153 | } \ | |
1154 | guts \ | |
1155 | }) | |
1156 | ||
37941236 | 1157 | /*----- Adding peers ------------------------------------------------------*/ |
1158 | ||
1159 | /* --- @a_doadd@ --- * | |
410c8acf | 1160 | * |
37941236 | 1161 | * Arguments: @admin_resop *r@ = resolver operation |
1162 | * @int rc@ = how it worked | |
410c8acf | 1163 | * |
1164 | * Returns: --- | |
1165 | * | |
37941236 | 1166 | * Use: Handles a completed resolution. |
410c8acf | 1167 | */ |
1168 | ||
37941236 | 1169 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1170 | { |
37941236 | 1171 | admin_addop *add = (admin_addop *)r; |
1172 | ||
1173 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1174 | ||
1175 | if (rc == ARES_OK) { | |
1176 | add->peer.sasz = add->r.sasz; | |
1177 | add->peer.sa = add->r.sa; | |
c8e02c8a MW |
1178 | if (p_findbyaddr(&add->r.sa)) |
1179 | a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END); | |
1180 | else 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; | |
010e6f63 | 1213 | add->peer.kxf = 0; |
37941236 | 1214 | |
42da2a58 | 1215 | /* --- Parse options --- */ |
1216 | ||
e7a4d919 MW |
1217 | OPTIONS(ac, av, { |
1218 | OPTARG("-background", arg, { tag = arg; }) | |
1219 | OPTARG("-tunnel", arg, { | |
1220 | unsigned i; | |
1221 | for (i = 0;; i++) { | |
1222 | if (!tunnels[i]) { | |
1223 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 1224 | goto fail; |
42da2a58 | 1225 | } |
e7a4d919 MW |
1226 | if (mystrieq(arg, tunnels[i]->name)) { |
1227 | add->peer.tops = tunnels[i]; | |
42da2a58 | 1228 | break; |
1229 | } | |
1230 | } | |
e7a4d919 MW |
1231 | }) |
1232 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
010e6f63 | 1233 | OPT("-cork", { add->peer.kxf |= KXF_CORK; }) |
e7a4d919 | 1234 | }); |
42da2a58 | 1235 | |
9986f0b5 MW |
1236 | /* --- Make sure someone's not got there already --- */ |
1237 | ||
bcf3764a | 1238 | if (!av[0] || !av[1]) |
9986f0b5 | 1239 | goto bad_syntax; |
e7a4d919 MW |
1240 | if (p_find(*av)) { |
1241 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1242 | goto fail; |
42da2a58 | 1243 | } |
e7a4d919 MW |
1244 | add->peer.name = xstrdup(*av++); |
1245 | ac--; | |
42da2a58 | 1246 | |
37941236 | 1247 | /* --- Crank up the resolver --- */ |
de014da6 | 1248 | |
e7a4d919 | 1249 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1250 | return; |
1251 | ||
37941236 | 1252 | /* --- Clearing up --- */ |
1253 | ||
42da2a58 | 1254 | bad_syntax: |
9986f0b5 | 1255 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1256 | fail: |
9986f0b5 | 1257 | if (add->peer.name) xfree(add->peer.name); |
37941236 | 1258 | xfree(add); |
0ba8de86 | 1259 | return; |
1260 | } | |
1261 | ||
1262 | /*----- Ping --------------------------------------------------------------*/ | |
1263 | ||
de014da6 | 1264 | /* --- @a_pingcancel@ --- * |
1265 | * | |
1266 | * Arguments: @admin_bgop *bg@ = background operation block | |
1267 | * | |
1268 | * Returns: --- | |
1269 | * | |
1270 | * Use: Cancels a running ping. | |
1271 | */ | |
1272 | ||
1273 | static void a_pingcancel(admin_bgop *bg) | |
1274 | { | |
1275 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1276 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1277 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1278 | } | |
1279 | ||
0ba8de86 | 1280 | /* --- @a_pong@ --- * |
1281 | * | |
1282 | * Arguments: @int rc@ = return code | |
de014da6 | 1283 | * @void *v@ = ping operation block |
0ba8de86 | 1284 | * |
1285 | * Returns: --- | |
1286 | * | |
1287 | * Use: Collects what happened to a ping message. | |
1288 | */ | |
1289 | ||
de014da6 | 1290 | static void a_pong(int rc, void *v) |
0ba8de86 | 1291 | { |
de014da6 | 1292 | admin_pingop *pg = v; |
0ba8de86 | 1293 | struct timeval tv; |
1294 | double millis; | |
1295 | ||
0ba8de86 | 1296 | switch (rc) { |
1297 | case PING_OK: | |
1298 | gettimeofday(&tv, 0); | |
de014da6 | 1299 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1300 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1301 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1302 | a_bgok(&pg->bg); |
0ba8de86 | 1303 | break; |
1304 | case PING_TIMEOUT: | |
f43df819 | 1305 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1306 | a_bgok(&pg->bg); |
0ba8de86 | 1307 | break; |
1308 | case PING_PEERDIED: | |
f43df819 | 1309 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1310 | a_bgok(&pg->bg); |
0ba8de86 | 1311 | break; |
1312 | default: | |
1313 | abort(); | |
1314 | } | |
060ca767 | 1315 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1316 | a_bgrelease(&pg->bg); |
0ba8de86 | 1317 | } |
1318 | ||
1319 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1320 | * | |
1321 | * Arguments: @admin *a@ = connection which requested the ping | |
1322 | * @unsigned ac@ = argument count | |
1323 | * @char *av[]@ = pointer to the argument list | |
1324 | * | |
1325 | * Returns: --- | |
1326 | * | |
1327 | * Use: Pings a peer. | |
1328 | */ | |
1329 | ||
1330 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1331 | const char *cmd, unsigned msg) | |
1332 | { | |
1333 | long t = T_PING; | |
0ba8de86 | 1334 | peer *p; |
de014da6 | 1335 | admin_pingop *pg = 0; |
1336 | const char *tag = 0; | |
0ba8de86 | 1337 | |
e7a4d919 MW |
1338 | OPTIONS(ac, av, { |
1339 | OPTARG("-background", arg, { tag = arg; }) | |
1340 | OPTTIME("-timeout", arg, { t = arg; }) | |
1341 | }); | |
1342 | if (!*av || av[1]) goto bad_syntax; | |
1343 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1344 | return; |
de014da6 | 1345 | pg = xmalloc(sizeof(*pg)); |
1346 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1347 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1348 | goto fail; | |
060ca767 | 1349 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1350 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1351 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1352 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1353 | a_bgrelease(&pg->bg); |
1354 | } | |
0ba8de86 | 1355 | return; |
e04c2d50 | 1356 | |
0ba8de86 | 1357 | bad_syntax: |
f43df819 | 1358 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1359 | fail: |
ff92ffd3 | 1360 | if (pg) xfree(pg); |
42da2a58 | 1361 | return; |
410c8acf | 1362 | } |
1363 | ||
0ba8de86 | 1364 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1365 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1366 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1367 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1368 | |
be6a1b7a MW |
1369 | /*----- Service commands --------------------------------------------------*/ |
1370 | ||
1371 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1372 | { | |
1373 | admin_service *svc; | |
1374 | unsigned f; | |
1375 | ||
1376 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1377 | if (f) { | |
1378 | if (versioncmp(av[1], svc->version) <= 0) { | |
1379 | a_fail(a, | |
1380 | "service-exists", | |
1381 | "%s", SYM_NAME(svc), | |
1382 | "%s", svc->version, | |
1383 | A_END); | |
1384 | return; | |
1385 | } | |
1386 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1387 | a_svcunlink(svc); | |
1388 | } | |
1389 | svc->prov = a; | |
1390 | svc->version = xstrdup(av[1]); | |
1391 | svc->next = a->svcs; | |
1392 | svc->prev = 0; | |
1393 | if (a->svcs) a->svcs->prev = svc; | |
1394 | a->svcs = svc; | |
1395 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1396 | a_ok(a); | |
1397 | } | |
1398 | ||
1399 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1400 | { | |
1401 | admin_service *svc; | |
1402 | ||
1403 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1404 | return; | |
1405 | if (svc->prov != a) { | |
1406 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1407 | return; | |
1408 | } | |
1409 | a_svcrelease(svc); | |
1410 | a_ok(a); | |
1411 | } | |
1412 | ||
1413 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1414 | { | |
1415 | admin_service *svc; | |
1416 | ||
1417 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1418 | return; | |
1419 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1420 | a_fail(a, "service-too-old", | |
1421 | "%s", SYM_NAME(svc), | |
1422 | "%s", svc->version, | |
1423 | A_END); | |
1424 | return; | |
1425 | } | |
1426 | a_ok(a); | |
1427 | } | |
1428 | ||
1429 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1430 | { | |
1431 | admin_service *svc; | |
1432 | ||
1433 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1434 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1435 | a_ok(a); | |
1436 | } | |
1437 | } | |
1438 | ||
1439 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1440 | { | |
1441 | admin_service *svc; | |
1442 | sym_iter i; | |
1443 | ||
1444 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1445 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1446 | a_ok(a); | |
1447 | } | |
1448 | ||
ef2f29c9 MW |
1449 | static void a_canceljob(admin_bgop *bg) |
1450 | { | |
1451 | admin_svcop *svc = (admin_svcop *)bg; | |
1452 | ||
1453 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1454 | a_jobdestroy(svc); | |
1455 | } | |
1456 | ||
1457 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1458 | { | |
1459 | const char *tag = 0; | |
1460 | admin_service *svc; | |
1461 | admin_svcop *svcop; | |
1462 | const char *ver = 0; | |
1463 | dstr d = DSTR_INIT; | |
1464 | ||
1465 | OPTIONS(ac, av, { | |
1466 | OPTARG("-background", arg, { tag = arg; }) | |
1467 | OPTARG("-version", arg, { ver = arg; }) | |
1468 | }); | |
1469 | if (!*av) goto bad_syntax; | |
1470 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1471 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1472 | a_fail(a, "service-too-old", | |
1473 | "%s", SYM_NAME(svc), | |
1474 | "%s", svc->version, | |
1475 | A_END); | |
1476 | goto fail; | |
1477 | } | |
1478 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1479 | a_fail(a, "provider-overloaded", A_END); | |
1480 | goto fail; | |
1481 | } | |
1482 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1483 | a_jobdestroy(svcop); | |
1484 | goto fail; | |
1485 | } | |
1486 | a_write(svc->prov, "SVCJOB", 0, | |
1487 | "%s", a_jobidencode(svcop), | |
1488 | "?TOKENS", av, | |
1489 | A_END); | |
1490 | goto done; | |
1491 | ||
1492 | bad_syntax: | |
1493 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1494 | fail: | |
1495 | done: | |
1496 | dstr_destroy(&d); | |
1497 | return; | |
1498 | } | |
1499 | ||
1500 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1501 | { | |
1502 | admin_svcop *svc; | |
1503 | ||
1504 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1505 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1506 | return; | |
1507 | } | |
1508 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1509 | if (donep) { | |
1510 | a_jobdestroy(svc); | |
1511 | a_bgrelease(&svc->bg); | |
1512 | } | |
1513 | a_ok(a); | |
1514 | } | |
1515 | ||
1516 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1517 | { a_replycmd(a, "OK", 1, av); } | |
1518 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1519 | { a_replycmd(a, "INFO", 0, av); } | |
1520 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1521 | { a_replycmd(a, "FAIL", 1, av); } | |
1522 | ||
410c8acf | 1523 | /*----- Administration commands -------------------------------------------*/ |
1524 | ||
1525 | /* --- Miscellaneous commands --- */ | |
1526 | ||
3cdc3f3a | 1527 | /* --- @traceish@ --- * |
1528 | * | |
1529 | * Arguments: @admin *a@ = connection to complain on | |
1530 | * @unsigned ac@ = number of arguments | |
1531 | * @char *av[]@ = vector of arguments | |
1532 | * @const char *what@ = what we're messing with | |
1533 | * @const trace_opt *tt@ = options table | |
1534 | * @unsigned *ff@ = where the flags are | |
1535 | * | |
1536 | * Returns: Nonzero if anything changed. | |
1537 | * | |
1538 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1539 | */ | |
410c8acf | 1540 | |
3cdc3f3a | 1541 | static int traceish(admin *a, unsigned ac, char *av[], |
1542 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1543 | { |
3cdc3f3a | 1544 | int ch = 0; |
1545 | ||
410c8acf | 1546 | if (!ac || strcmp(av[0], "?") == 0) { |
1547 | const trace_opt *t; | |
3cdc3f3a | 1548 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1549 | a_info(a, "*%c%c %s", |
1550 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1551 | } |
1552 | } else { | |
1553 | unsigned sense = 1; | |
3cdc3f3a | 1554 | unsigned f = *ff; |
1555 | const trace_opt *t; | |
410c8acf | 1556 | char *p = av[0]; |
1557 | ||
1558 | while (*p) { | |
1559 | switch (*p) { | |
1560 | case '+': sense = 1; break; | |
1561 | case '-': sense = 0; break; | |
1562 | default: | |
3cdc3f3a | 1563 | for (t = tt; t->ch; t++) { |
1564 | if (t->ch == *p) { | |
1565 | if (sense) f |= t->f; | |
1566 | else f &= ~t->f; | |
410c8acf | 1567 | goto tropt_ok; |
1568 | } | |
1569 | } | |
f43df819 | 1570 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1571 | return (0); |
e04c2d50 | 1572 | tropt_ok:; |
410c8acf | 1573 | break; |
1574 | } | |
1575 | p++; | |
1576 | } | |
3cdc3f3a | 1577 | *ff = f; |
1578 | ch = 1; | |
410c8acf | 1579 | } |
3cdc3f3a | 1580 | a_ok(a); |
1581 | return (ch); | |
1582 | } | |
1583 | ||
1584 | #ifndef NTRACE | |
1585 | ||
1586 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1587 | { | |
1588 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1589 | trace_level(tr_flags); | |
410c8acf | 1590 | } |
1591 | ||
1592 | #endif | |
1593 | ||
3cdc3f3a | 1594 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1595 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1596 | |
3cdc3f3a | 1597 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1598 | const char *status, char *av[]) |
1599 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1600 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1601 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1602 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1603 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1604 | |
410c8acf | 1605 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1606 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1607 | |
410c8acf | 1608 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1609 | { | |
1610 | if (flags & F_DAEMON) | |
f43df819 | 1611 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1612 | else { |
f43df819 | 1613 | a_notify("DAEMON", A_END); |
93bee2c4 | 1614 | if (a_stdin) |
410c8acf | 1615 | a_destroy(a_stdin); |
19dd2531 | 1616 | if (daemonize()) |
f43df819 | 1617 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1618 | else { |
410c8acf | 1619 | flags |= F_DAEMON; |
3cdc3f3a | 1620 | a_ok(a); |
93bee2c4 | 1621 | } |
410c8acf | 1622 | } |
1623 | } | |
1624 | ||
ff92ffd3 MW |
1625 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1626 | { | |
1627 | admin_bgop *bg; | |
1628 | ||
1629 | for (bg = a->bg; bg; bg = bg->next) { | |
1630 | assert(bg->tag); | |
1631 | a_info(a, "%s", bg->tag, A_END); | |
1632 | } | |
1633 | a_ok(a); | |
1634 | } | |
1635 | ||
1636 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1637 | { | |
1638 | admin_bgop *bg; | |
1639 | ||
1640 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1641 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1642 | else { | |
1643 | bg->cancel(bg); | |
1644 | a_bgrelease(bg); | |
1645 | a_ok(a); | |
1646 | } | |
1647 | } | |
1648 | ||
410c8acf | 1649 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1650 | { | |
c8e02c8a | 1651 | FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); }); |
3cdc3f3a | 1652 | a_ok(a); |
410c8acf | 1653 | } |
1654 | ||
1655 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1656 | { | |
1657 | peer *p; | |
1658 | ||
37941236 | 1659 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1660 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1661 | a_ok(a); |
1662 | } | |
410c8acf | 1663 | } |
1664 | ||
64cf2223 MW |
1665 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1666 | { | |
1667 | peer *p; | |
1668 | ||
1669 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1670 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1671 | p_setifname(p, av[1]); | |
1672 | a_ok(a); | |
e04c2d50 | 1673 | } |
64cf2223 MW |
1674 | } |
1675 | ||
37941236 | 1676 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1677 | { | |
1678 | buf b; | |
1679 | ||
1680 | buf_init(&b, buf_i, PKBUFSZ); | |
1681 | c_new(&b); | |
f43df819 | 1682 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1683 | a_ok(a); |
1684 | } | |
1685 | ||
1686 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1687 | { | |
1688 | base64_ctx b64; | |
1689 | buf b; | |
1690 | dstr d = DSTR_INIT; | |
1691 | ||
1692 | base64_init(&b64); | |
1693 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1694 | base64_decode(&b64, 0, 0, &d); | |
1695 | buf_init(&b, d.buf, d.len); | |
1696 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1697 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1698 | else |
1699 | a_ok(a); | |
1700 | dstr_destroy(&d); | |
1701 | } | |
1702 | ||
1703 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1704 | { | |
1705 | peer *p; | |
1706 | base64_ctx b64; | |
1707 | dstr d = DSTR_INIT; | |
1708 | ||
1709 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1710 | base64_init(&b64); | |
1711 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1712 | base64_decode(&b64, 0, 0, &d); | |
1713 | p_greet(p, d.buf, d.len); | |
1714 | dstr_destroy(&d); | |
1715 | a_ok(a); | |
1716 | } | |
1717 | } | |
1718 | ||
410c8acf | 1719 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1720 | { | |
1721 | peer *p; | |
1722 | const addr *ad; | |
1723 | ||
37941236 | 1724 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1725 | ad = p_addr(p); |
1726 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1727 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1728 | a_ok(a); |
410c8acf | 1729 | } |
1730 | } | |
1731 | ||
060ca767 | 1732 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1733 | { | |
1734 | peer *p; | |
1735 | const peerspec *ps; | |
1736 | ||
37941236 | 1737 | if ((p = a_findpeer(a, av[0])) != 0) { |
1738 | ps = p_spec(p); | |
f43df819 MW |
1739 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
1740 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); | |
37941236 | 1741 | a_ok(a); |
060ca767 | 1742 | } |
060ca767 | 1743 | } |
1744 | ||
1745 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1746 | { | |
f43df819 MW |
1747 | a_info(a, "implementation=edgeware-tripe", A_END); |
1748 | a_info(a, "version=%s", VERSION, A_END); | |
1749 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1750 | a_ok(a); |
1751 | } | |
1752 | ||
c7053da9 | 1753 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1754 | { | |
1755 | peer *p; | |
1756 | stats *st; | |
1757 | ||
37941236 | 1758 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1759 | return; |
060ca767 | 1760 | |
1761 | st = p_stats(p); | |
f43df819 MW |
1762 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1763 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1764 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
1765 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
1766 | a_info(a, | |
1767 | "packets-out=%lu", st->n_out, | |
1768 | "bytes-out=%lu", st->sz_out, | |
1769 | A_END); | |
1770 | a_info(a, | |
1771 | "keyexch-packets-in=%lu", st->n_kxin, | |
1772 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
1773 | A_END); | |
1774 | a_info(a, | |
1775 | "keyexch-packets-out=%lu", st->n_kxout, | |
1776 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
1777 | A_END); | |
1778 | a_info(a, | |
1779 | "ip-packets-in=%lu", st->n_ipin, | |
1780 | "ip-bytes-in=%lu", st->sz_ipin, | |
1781 | A_END); | |
1782 | a_info(a, | |
e04c2d50 | 1783 | "ip-packets-out=%lu", st->n_ipout, |
18ad8913 MW |
1784 | "ip-bytes-out=%lu", st->sz_ipout, |
1785 | A_END); | |
f43df819 | 1786 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 1787 | a_ok(a); |
c7053da9 | 1788 | } |
1789 | ||
410c8acf | 1790 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1791 | { | |
1792 | peer *p; | |
f98df549 | 1793 | |
37941236 | 1794 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1795 | p_destroy(p); |
3cdc3f3a | 1796 | a_ok(a); |
410c8acf | 1797 | } |
1798 | } | |
1799 | ||
0ba8de86 | 1800 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1801 | { | |
1802 | peer *p; | |
f98df549 | 1803 | |
37941236 | 1804 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1805 | kx_start(&p->kx, 1); |
0ba8de86 | 1806 | a_ok(a); |
1807 | } | |
1808 | } | |
1809 | ||
de014da6 | 1810 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1811 | { p_keyreload(); a_ok(a); } | |
1812 | ||
410c8acf | 1813 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1814 | { | |
f43df819 | 1815 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1816 | a_ok(a); |
410c8acf | 1817 | a_quit(); |
1818 | } | |
1819 | ||
3cdc3f3a | 1820 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1821 | { | |
f43df819 | 1822 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1823 | a_ok(a); |
1824 | } | |
1825 | ||
42da2a58 | 1826 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1827 | { | |
1828 | int i; | |
f98df549 | 1829 | |
42da2a58 | 1830 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1831 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1832 | a_ok(a); |
1833 | } | |
1834 | ||
410c8acf | 1835 | /* --- The command table and help --- */ |
1836 | ||
1837 | typedef struct acmd { | |
1838 | const char *name; | |
1839 | const char *help; | |
1840 | unsigned argmin, argmax; | |
1841 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1842 | } acmd; | |
1843 | ||
1844 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1845 | ||
1846 | static const acmd acmdtab[] = { | |
9986f0b5 | 1847 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1848 | { "addr", "PEER", 1, 1, acmd_addr }, |
ff92ffd3 | 1849 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1850 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1851 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1852 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1853 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1854 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1855 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1856 | { "help", 0, 0, 0, acmd_help }, | |
1857 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1858 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1859 | { "kill", "PEER", 1, 1, acmd_kill }, |
1860 | { "list", 0, 0, 0, acmd_list }, | |
1861 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1862 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1863 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1864 | { "port", 0, 0, 0, acmd_port }, | |
1865 | { "quit", 0, 0, 0, acmd_quit }, | |
1866 | { "reload", 0, 0, 0, acmd_reload }, | |
1867 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1868 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
be6a1b7a MW |
1869 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
1870 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
1871 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
1872 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 1873 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 1874 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
1875 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
1876 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
1877 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
1878 | 2, 0xffff, acmd_svcsubmit }, | |
f43df819 | 1879 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1880 | #ifndef NTRACE |
f43df819 | 1881 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1882 | #endif |
f43df819 MW |
1883 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1884 | { "version", 0, 0, 0, acmd_version }, | |
1885 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
e04c2d50 | 1886 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, |
410c8acf | 1887 | { 0, 0, 0, 0, 0 } |
1888 | }; | |
1889 | ||
1890 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1891 | { | |
1892 | const acmd *c; | |
f98df549 | 1893 | |
f43df819 MW |
1894 | for (c = acmdtab; c->name; c++) { |
1895 | if (c->help) | |
1896 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
e04c2d50 | 1897 | else |
f43df819 MW |
1898 | a_info(a, "%s", c->name, A_END); |
1899 | } | |
3cdc3f3a | 1900 | a_ok(a); |
410c8acf | 1901 | } |
1902 | ||
1903 | /*----- Connection handling -----------------------------------------------*/ | |
1904 | ||
c511e1f9 | 1905 | /* --- @a_destroypending@ --- * |
410c8acf | 1906 | * |
c511e1f9 | 1907 | * Arguments: --- |
fd3cf232 | 1908 | * |
1909 | * Returns: --- | |
1910 | * | |
c511e1f9 | 1911 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 1912 | */ |
1913 | ||
c511e1f9 | 1914 | static void a_destroypending(void) |
410c8acf | 1915 | { |
c511e1f9 | 1916 | admin *a, *aa; |
de014da6 | 1917 | admin_bgop *bg, *bbg; |
be6a1b7a | 1918 | admin_service *svc, *ssvc; |
de014da6 | 1919 | |
c511e1f9 | 1920 | /* --- Destroy connections marked as pending --- */ |
fd3cf232 | 1921 | |
c511e1f9 MW |
1922 | for (a = a_dead; a; a = aa) { |
1923 | aa = a->next; | |
1924 | assert(a->f & AF_DEAD); | |
1925 | ||
1926 | /* --- Report what we're doing --- */ | |
1927 | ||
1928 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", | |
1929 | a->seq); ) | |
1930 | ||
46dde080 MW |
1931 | /* --- If this is the foreground client then shut down --- */ |
1932 | ||
1933 | if (a->f & AF_FOREGROUND) { | |
1934 | T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); ) | |
1935 | a_warn("SERVER", "quit", "foreground-eof", A_END); | |
1936 | a_quit(); | |
1937 | } | |
1938 | ||
c511e1f9 MW |
1939 | /* --- Abort any background jobs in progress --- */ |
1940 | ||
1941 | for (bg = a->bg; bg; bg = bbg) { | |
1942 | bbg = bg->next; | |
1943 | bg->cancel(bg); | |
1944 | if (bg->tag) xfree(bg->tag); | |
1945 | xfree(bg); | |
1946 | } | |
1947 | ||
5d46c0f8 | 1948 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a MW |
1949 | |
1950 | for (svc = a->svcs; svc; svc = ssvc) { | |
1951 | ssvc = svc->next; | |
1952 | a_svcrelease(svc); | |
1953 | } | |
5d46c0f8 | 1954 | a_jobtablefinal(&a->j); |
be6a1b7a | 1955 | |
c511e1f9 MW |
1956 | /* --- Close file descriptors and selectory --- */ |
1957 | ||
1958 | selbuf_destroy(&a->b); | |
1959 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
1960 | close(a->w.fd); | |
1961 | if (a_stdin == a) a_stdin = 0; | |
1962 | ||
1963 | /* --- Done --- */ | |
1964 | ||
1965 | DESTROY(a); | |
410c8acf | 1966 | } |
410c8acf | 1967 | |
c511e1f9 | 1968 | /* --- All pending destruction completed --- */ |
060ca767 | 1969 | |
c511e1f9 | 1970 | a_dead = 0; |
060ca767 | 1971 | } |
1972 | ||
fd3cf232 | 1973 | /* --- @a_destroy@ --- * |
1974 | * | |
1975 | * Arguments: @admin *a@ = pointer to an admin block | |
1976 | * | |
1977 | * Returns: --- | |
1978 | * | |
1979 | * Use: Destroys an admin block. This requires a certain amount of | |
1980 | * care. | |
1981 | */ | |
1982 | ||
de014da6 | 1983 | static void freequeue(oqueue *q) |
1984 | { | |
1985 | obuf *o, *oo; | |
1986 | ||
1987 | for (o = q->hd; o; o = oo) { | |
1988 | oo = o->next; | |
1989 | xfree(o); | |
1990 | } | |
1991 | q->hd = q->tl = 0; | |
1992 | } | |
1993 | ||
fd3cf232 | 1994 | static void a_destroy(admin *a) |
1995 | { | |
fd3cf232 | 1996 | if (a->f & AF_DEAD) |
1997 | return; | |
1998 | ||
c511e1f9 MW |
1999 | if (a->next) a->next->prev = a->prev; |
2000 | if (a->prev) a->prev->next = a->next; | |
2001 | else admins = a->next; | |
fd3cf232 | 2002 | |
c511e1f9 | 2003 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 2004 | freequeue(&a->out); |
fd3cf232 | 2005 | |
c511e1f9 MW |
2006 | a->f |= AF_DEAD; |
2007 | a->next = a_dead; | |
2008 | a_dead = a; | |
fd3cf232 | 2009 | |
c511e1f9 | 2010 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2011 | } |
2012 | ||
410c8acf | 2013 | /* --- @a_line@ --- * |
2014 | * | |
2015 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2016 | * @size_t len@ = length of the line |
410c8acf | 2017 | * @void *vp@ = pointer to my admin block |
2018 | * | |
2019 | * Returns: --- | |
2020 | * | |
2021 | * Use: Handles a line of input. | |
2022 | */ | |
2023 | ||
3008eabf | 2024 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2025 | { |
2026 | admin *a = vp; | |
2027 | const acmd *c; | |
3cdc3f3a | 2028 | char *av[16]; |
410c8acf | 2029 | size_t ac; |
2030 | ||
8d0c7a83 | 2031 | TIMER; |
fd3cf232 | 2032 | if (a->f & AF_DEAD) |
2033 | return; | |
410c8acf | 2034 | if (!p) { |
de014da6 | 2035 | if (!a->bg) |
2036 | a_destroy(a); | |
2037 | else { | |
2038 | a->f |= AF_CLOSE; | |
2039 | selbuf_disable(&a->b); | |
2040 | } | |
410c8acf | 2041 | return; |
2042 | } | |
3cdc3f3a | 2043 | ac = str_qsplit(p, av, 16, 0, STRF_QUOTE); |
410c8acf | 2044 | if (!ac) |
2045 | return; | |
410c8acf | 2046 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2047 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2048 | ac--; |
f43df819 MW |
2049 | if (c->argmin > ac || ac > c->argmax) { |
2050 | if (!c->help) | |
2051 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
e04c2d50 | 2052 | else |
f43df819 | 2053 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); |
c511e1f9 | 2054 | } else |
410c8acf | 2055 | c->func(a, ac, av + 1); |
2056 | return; | |
2057 | } | |
2058 | } | |
f43df819 | 2059 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2060 | } |
2061 | ||
2062 | /* --- @a_create@ --- * | |
2063 | * | |
2064 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2065 | * @unsigned f@ = initial flags to set |
410c8acf | 2066 | * |
2067 | * Returns: --- | |
2068 | * | |
2069 | * Use: Creates a new admin connection. | |
2070 | */ | |
2071 | ||
3cdc3f3a | 2072 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2073 | { |
2074 | admin *a = CREATE(admin); | |
3cdc3f3a | 2075 | |
93bee2c4 | 2076 | T( static unsigned seq = 0; |
2077 | a->seq = seq++; ) | |
410c8acf | 2078 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2079 | a->bg = 0; |
042d5c20 | 2080 | a->ref = 0; |
be6a1b7a | 2081 | a->svcs = 0; |
5d46c0f8 | 2082 | a_jobtableinit(&a->j); |
3cdc3f3a | 2083 | a->f = f; |
de014da6 | 2084 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2085 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2086 | if (fd_out != fd_in) |
fd3cf232 | 2087 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2088 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2089 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2090 | a->out.hd = a->out.tl = 0; |
410c8acf | 2091 | a->next = admins; |
2092 | a->prev = 0; | |
de014da6 | 2093 | if (admins) admins->prev = a; |
410c8acf | 2094 | admins = a; |
2095 | } | |
2096 | ||
2097 | /* --- @a_accept@ --- * | |
2098 | * | |
2099 | * Arguments: @int fd@ = file descriptor to accept | |
2100 | * @unsigned mode@ = what to do | |
2101 | * @void *v@ = uninteresting pointer | |
2102 | * | |
2103 | * Returns: --- | |
2104 | * | |
2105 | * Use: Accepts a new admin connection. | |
2106 | */ | |
2107 | ||
2108 | static void a_accept(int fd, unsigned mode, void *v) | |
2109 | { | |
2110 | int nfd; | |
2111 | struct sockaddr_un sun; | |
2112 | size_t sz = sizeof(sun); | |
2113 | ||
2114 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2115 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2116 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2117 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2118 | return; |
2119 | } | |
3cdc3f3a | 2120 | a_create(nfd, nfd, 0); |
410c8acf | 2121 | } |
2122 | ||
c511e1f9 MW |
2123 | /* --- @a_preselect@ --- * |
2124 | * | |
2125 | * Arguments: --- | |
2126 | * | |
2127 | * Returns: --- | |
2128 | * | |
2129 | * Use: Informs the admin module that we're about to select again, | |
2130 | * and that it should do cleanup things it has delayed until a | |
2131 | * `safe' time. | |
2132 | */ | |
2133 | ||
2134 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2135 | ||
410c8acf | 2136 | /* --- @a_daemon@ --- * |
2137 | * | |
2138 | * Arguments: --- | |
2139 | * | |
2140 | * Returns: --- | |
2141 | * | |
2142 | * Use: Informs the admin module that it's a daemon. | |
2143 | */ | |
2144 | ||
f98df549 | 2145 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2146 | |
2147 | /* --- @a_init@ --- * | |
2148 | * | |
2149 | * Arguments: @const char *name@ = socket name to create | |
2150 | * | |
2151 | * Returns: --- | |
2152 | * | |
2153 | * Use: Creates the admin listening socket. | |
2154 | */ | |
2155 | ||
2156 | void a_init(const char *name) | |
2157 | { | |
2158 | int fd; | |
2159 | int n = 5; | |
2160 | struct sockaddr_un sun; | |
2161 | struct sigaction sa; | |
2162 | size_t sz; | |
2163 | ||
be6a1b7a MW |
2164 | /* --- Create services table --- */ |
2165 | ||
2166 | sym_create(&a_svcs); | |
2167 | ||
410c8acf | 2168 | /* --- Set up the socket address --- */ |
2169 | ||
2170 | sz = strlen(name) + 1; | |
2171 | if (sz > sizeof(sun.sun_path)) | |
2172 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
2173 | BURN(sun); | |
2174 | sun.sun_family = AF_UNIX; | |
2175 | memcpy(sun.sun_path, name, sz); | |
2176 | sz += offsetof(struct sockaddr_un, sun_path); | |
2177 | ||
2178 | /* --- Attempt to bind to the socket --- */ | |
2179 | ||
2180 | umask(0077); | |
2181 | again: | |
2182 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
2183 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
2184 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
2185 | struct stat st; | |
2186 | int e = errno; | |
2187 | if (errno != EADDRINUSE) { | |
2188 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
2189 | sun.sun_path, strerror(e)); | |
2190 | } | |
2191 | if (!n) | |
2192 | die(EXIT_FAILURE, "too many retries; giving up"); | |
2193 | n--; | |
2194 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
2195 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
2196 | sun.sun_path); | |
2197 | } | |
2198 | if (errno != ECONNREFUSED) | |
2199 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
2200 | if (stat(sun.sun_path, &st)) { | |
2201 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
2202 | sun.sun_path, strerror(errno)); | |
2203 | } | |
2204 | if (!S_ISSOCK(st.st_mode)) | |
2205 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 2206 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2207 | unlink(sun.sun_path); |
2208 | close(fd); | |
2209 | goto again; | |
2210 | } | |
2211 | chmod(sun.sun_path, 0600); | |
2212 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
2213 | if (listen(fd, 5)) | |
2214 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
2215 | ||
2216 | /* --- Listen to the socket --- */ | |
2217 | ||
2218 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2219 | sel_addfile(&sock); | |
2220 | sockname = name; | |
2221 | bres_init(&sel); | |
2222 | T( trace_custom(a_trace, 0); | |
2223 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2224 | flags |= F_INIT; | |
2225 | ||
2226 | /* --- Set up signal handlers --- */ | |
2227 | ||
2228 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2229 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 2230 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 2231 | sigaction(SIGINT, 0, &sa); |
2232 | if (sa.sa_handler != SIG_IGN) | |
2233 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2234 | } | |
2235 | ||
2236 | /*----- That's all, folks -------------------------------------------------*/ |