Commit | Line | Data |
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410c8acf | 1 | /* -*-c-*- |
2 | * | |
2d752320 | 3 | * $Id$ |
410c8acf | 4 | * |
5 | * Admin interface for configuration | |
6 | * | |
7 | * (c) 2001 Straylight/Edgeware | |
8 | */ | |
9 | ||
10 | /*----- Licensing notice --------------------------------------------------* | |
11 | * | |
12 | * This file is part of Trivial IP Encryption (TrIPE). | |
13 | * | |
14 | * TrIPE is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2 of the License, or | |
17 | * (at your option) any later version. | |
18 | * | |
19 | * TrIPE is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with TrIPE; if not, write to the Free Software Foundation, | |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
27 | */ | |
28 | ||
410c8acf | 29 | /*----- Header files ------------------------------------------------------*/ |
30 | ||
31 | #include "tripe.h" | |
32 | ||
33 | /*----- Global variables --------------------------------------------------*/ | |
34 | ||
35 | #ifndef NTRACE | |
36 | ||
37 | const trace_opt tr_opts[] = { | |
38 | { 't', T_TUNNEL, "tunnel events" }, | |
39 | { 'r', T_PEER, "peer events" }, | |
40 | { 'a', T_ADMIN, "admin interface" }, | |
410c8acf | 41 | { 's', T_KEYSET, "symmetric keyset management" }, |
42 | { 'x', T_KEYEXCH, "key exchange" }, | |
43 | { 'm', T_KEYMGMT, "key management" }, | |
37941236 | 44 | { 'l', T_CHAL, "challenge management" }, |
45 | { 'p', T_PACKET, "packet contents" }, | |
46 | { 'c', T_CRYPTO, "crypto details" }, | |
410c8acf | 47 | { 'A', T_ALL, "all of the above" }, |
48 | { 0, 0, 0 } | |
49 | }; | |
50 | ||
51 | unsigned tr_flags = 0; | |
52 | #endif | |
53 | ||
3cdc3f3a | 54 | static const trace_opt w_opts[] = { |
55 | { 't', AF_TRACE, "trace messages" }, | |
56 | { 'n', AF_NOTE, "asynchronous notifications" }, | |
57 | { 'w', AF_WARN, "warnings" }, | |
58 | { 'A', AF_ALLMSGS, "all of the above" }, | |
59 | { 0, 0, 0 } | |
60 | }; | |
61 | ||
410c8acf | 62 | /*----- Static variables --------------------------------------------------*/ |
63 | ||
64 | static admin *admins; | |
c511e1f9 | 65 | static admin *a_dead; |
410c8acf | 66 | static sel_file sock; |
67 | static const char *sockname; | |
be6a1b7a | 68 | static sym_table a_svcs; |
410c8acf | 69 | static unsigned flags = 0; |
70 | static admin *a_stdin = 0; | |
71 | static sig s_term, s_int, s_hup; | |
72 | ||
73 | #define F_DAEMON 1u | |
74 | #define F_INIT 2u | |
75 | ||
76 | #define T_RESOLVE SEC(30) | |
0ba8de86 | 77 | #define T_PING SEC(5) |
410c8acf | 78 | |
fd3cf232 | 79 | static void a_destroy(admin */*a*/); |
fd3cf232 | 80 | |
060ca767 | 81 | #define BOOL(x) ((x) ? "t" : "nil") |
82 | ||
fd3cf232 | 83 | /*----- Output functions --------------------------------------------------*/ |
84 | ||
85 | /* --- @trywrite@ --- * | |
86 | * | |
87 | * Arguments: @admin *a@ = pointer to an admin block | |
88 | * @const char *p@ = pointer to buffer to write | |
89 | * @size_t sz@ = size of data to write | |
90 | * | |
91 | * Returns: The number of bytes written, or less than zero on error. | |
92 | * | |
93 | * Use: Attempts to write data to a client. | |
94 | */ | |
95 | ||
96 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
97 | { | |
98 | ssize_t n, done = 0; | |
99 | ||
100 | again: | |
101 | if (!sz) | |
102 | return (done); | |
103 | n = write(a->w.fd, p, sz); | |
104 | if (n > 0) { | |
105 | done += n; | |
106 | p += n; | |
107 | sz -= n; | |
108 | goto again; | |
109 | } | |
110 | if (n < 0) { | |
111 | if (errno == EINTR) | |
112 | goto again; | |
113 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
114 | a_destroy(a); | |
f43df819 | 115 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 116 | return (-1); |
117 | } | |
118 | } | |
119 | return (done); | |
120 | } | |
121 | ||
de014da6 | 122 | /* --- @doqueue@ -- * |
fd3cf232 | 123 | * |
de014da6 | 124 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 125 | * @const char *p@ = pointer to buffer to write |
de014da6 | 126 | * @size_t sz@ = size of buffer |
fd3cf232 | 127 | * |
de014da6 | 128 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 129 | * |
de014da6 | 130 | * Use: Queues data to be written later. |
fd3cf232 | 131 | */ |
132 | ||
de014da6 | 133 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 134 | { |
fd3cf232 | 135 | obuf *o; |
de014da6 | 136 | int rc = 0; |
137 | size_t n; | |
fd3cf232 | 138 | |
de014da6 | 139 | o = q->tl; |
fd3cf232 | 140 | if (!o) |
de014da6 | 141 | rc = 1; |
fd3cf232 | 142 | else if (o->p_in < o->buf + OBUFSZ) |
143 | goto noalloc; | |
144 | ||
145 | do { | |
146 | o = xmalloc(sizeof(obuf)); | |
147 | o->next = 0; | |
148 | o->p_in = o->p_out = o->buf; | |
de014da6 | 149 | if (q->tl) |
150 | q->tl->next = o; | |
fd3cf232 | 151 | else |
de014da6 | 152 | q->hd = o; |
153 | q->tl = o; | |
fd3cf232 | 154 | |
155 | noalloc: | |
156 | n = o->buf + OBUFSZ - o->p_in; | |
157 | if (n > sz) | |
158 | n = sz; | |
159 | memcpy(o->p_in, p, n); | |
160 | o->p_in += n; | |
161 | p += n; | |
162 | sz -= n; | |
163 | } while (sz); | |
de014da6 | 164 | |
165 | return (rc); | |
166 | } | |
167 | ||
168 | /* --- @dosend@ --- * | |
169 | * | |
170 | * Arguemnts: @admin *a@ = pointer to an admin block | |
171 | * @const char *p@ = pointer to buffer to write | |
172 | * @size_t sz@ = size of data to write | |
173 | * | |
174 | * Returns: --- | |
175 | * | |
176 | * Use: Sends data to an admin client. | |
177 | */ | |
178 | ||
179 | static void dosend(admin *a, const char *p, size_t sz) | |
180 | { | |
181 | ssize_t n; | |
182 | ||
183 | if (a->f & AF_DEAD) | |
184 | return; | |
185 | if (!a->out.hd) { | |
186 | if ((n = trywrite(a, p, sz)) < 0) | |
187 | return; | |
188 | p += n; | |
189 | sz -= n; | |
190 | if (!sz) | |
191 | return; | |
192 | } | |
193 | if (doqueue(&a->out, p, sz)) | |
194 | sel_addfile(&a->w); | |
fd3cf232 | 195 | } |
196 | ||
197 | /* --- @a_flush@ --- * | |
198 | * | |
199 | * Arguments: @int fd@ = file descriptor | |
200 | * @unsigned mode@ = what's happening | |
201 | * @void *v@ = pointer to my admin block | |
202 | * | |
203 | * Returns: --- | |
204 | * | |
205 | * Use: Flushes buffers when a client is ready to read again. | |
206 | */ | |
207 | ||
208 | static void a_flush(int fd, unsigned mode, void *v) | |
209 | { | |
210 | admin *a = v; | |
211 | obuf *o, *oo; | |
212 | ssize_t n; | |
213 | ||
de014da6 | 214 | o = a->out.hd; |
fd3cf232 | 215 | while (o) { |
216 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
217 | return; | |
218 | o->p_out += n; | |
219 | if (o->p_in < o->p_out) | |
220 | break; | |
221 | oo = o; | |
222 | o = o->next; | |
223 | xfree(oo); | |
224 | } | |
de014da6 | 225 | a->out.hd = o; |
fd3cf232 | 226 | if (!o) { |
de014da6 | 227 | a->out.tl = 0; |
fd3cf232 | 228 | sel_rmfile(&a->w); |
229 | } | |
230 | } | |
231 | ||
410c8acf | 232 | /*----- Utility functions -------------------------------------------------*/ |
233 | ||
f43df819 MW |
234 | /* --- @quotify@ --- * |
235 | * | |
236 | * Arguments: @dstr *d@ = where to write the answer | |
237 | * @const char *p@ = string to quotify | |
238 | * | |
239 | * Returns: --- | |
240 | * | |
241 | * Use: Quotes the given string if necessary, according to our | |
242 | * quoting rules. | |
243 | */ | |
244 | ||
245 | static void quotify(dstr *d, const char *p) | |
246 | { | |
247 | if (d->len) | |
248 | dstr_putc(d, ' '); | |
249 | if (*p && !p[strcspn(p, "\"' \t\n\v")]) | |
250 | dstr_puts(d, p); | |
251 | else { | |
252 | dstr_putc(d, '\"'); | |
253 | while (*p) { | |
254 | if (*p == '\\' || *p == '\"') | |
255 | dstr_putc(d, '\\'); | |
256 | dstr_putc(d, *p++); | |
257 | } | |
258 | dstr_putc(d, '\"'); | |
259 | } | |
260 | } | |
261 | ||
262 | /* --- @a_vformat@ --- * | |
263 | * | |
264 | * Arguments: @dstr *d@ = where to leave the formatted message | |
265 | * @const char *fmt@ = pointer to format string | |
266 | * @va_list ap@ = arguments in list | |
267 | * | |
268 | * Returns: --- | |
269 | * | |
270 | * Use: Main message token formatting driver. | |
271 | */ | |
272 | ||
273 | static void a_vformat(dstr *d, const char *fmt, va_list ap) | |
274 | { | |
275 | dstr dd = DSTR_INIT; | |
276 | ||
277 | while (fmt) { | |
278 | if (*fmt == '*') { | |
279 | dstr_putc(d, ' '); | |
280 | dstr_vputf(d, fmt + 1, &ap); | |
281 | } else if (*fmt == '?') { | |
282 | if (strcmp(fmt, "?ADDR") == 0) { | |
283 | const addr *a = va_arg(ap, const addr *); | |
284 | switch (a->sa.sa_family) { | |
285 | case AF_INET: | |
286 | quotify(d, "INET"); | |
287 | quotify(d, inet_ntoa(a->sin.sin_addr)); | |
288 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); | |
289 | break; | |
290 | default: | |
291 | abort(); | |
292 | } | |
293 | } else if (strcmp(fmt, "?B64") == 0) { | |
294 | const octet *p = va_arg(ap, const octet *); | |
295 | size_t n = va_arg(ap, size_t); | |
296 | base64_ctx b64; | |
297 | dstr_putc(d, ' '); | |
298 | base64_init(&b64); | |
299 | b64.indent = ""; | |
300 | b64.maxline = 0; | |
301 | base64_encode(&b64, p, n, d); | |
302 | base64_encode(&b64, 0, 0, d); | |
303 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
3331936b MW |
304 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
305 | const char *const *av = va_arg(ap, const char *const *); | |
306 | while (*av) quotify(d, *av++); | |
f43df819 MW |
307 | } else if (strcmp(fmt, "?PEER") == 0) |
308 | quotify(d, p_name(va_arg(ap, peer *))); | |
309 | else if (strcmp(fmt, "?ERRNO") == 0) { | |
310 | dstr_putf(d, " E%d", errno); | |
311 | quotify(d, strerror(errno)); | |
312 | } else | |
313 | abort(); | |
314 | } else { | |
315 | if (*fmt == '!') fmt++; | |
316 | DRESET(&dd); | |
317 | dstr_vputf(&dd, fmt, &ap); | |
318 | quotify(d, dd.buf); | |
319 | } | |
320 | fmt = va_arg(ap, const char *); | |
321 | } | |
322 | ||
323 | dstr_destroy(&dd); | |
324 | } | |
325 | ||
3cdc3f3a | 326 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 327 | * |
328 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 329 | * @const char *status@ = status code to report |
330 | * @const char *tag@ = tag string, or null | |
410c8acf | 331 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 332 | * @va_list ap@ = arguments in list |
410c8acf | 333 | * @...@ = other arguments |
334 | * | |
335 | * Returns: --- | |
336 | * | |
337 | * Use: Sends a message to an admin connection. | |
338 | */ | |
339 | ||
de014da6 | 340 | static void a_vwrite(admin *a, const char *status, const char *tag, |
341 | const char *fmt, va_list ap) | |
410c8acf | 342 | { |
410c8acf | 343 | dstr d = DSTR_INIT; |
f98df549 | 344 | |
de014da6 | 345 | if (tag) dstr_puts(&d, "BG"); |
346 | dstr_puts(&d, status); | |
f43df819 MW |
347 | if (tag) quotify(&d, tag); |
348 | a_vformat(&d, fmt, ap); | |
3cdc3f3a | 349 | dstr_putc(&d, '\n'); |
350 | dosend(a, d.buf, d.len); | |
351 | dstr_destroy(&d); | |
352 | } | |
353 | ||
de014da6 | 354 | static void a_write(admin *a, const char *status, const char *tag, |
355 | const char *fmt, ...) | |
3cdc3f3a | 356 | { |
357 | va_list ap; | |
f98df549 | 358 | |
410c8acf | 359 | va_start(ap, fmt); |
de014da6 | 360 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 361 | va_end(ap); |
3cdc3f3a | 362 | } |
363 | ||
364 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
365 | * | |
366 | * Arguments: @admin *a@ = connection | |
367 | * @const char *fmt@ = format string | |
368 | * @...@ = other arguments | |
369 | * | |
370 | * Returns: --- | |
371 | * | |
372 | * Use: Convenience functions for @a_write@. | |
373 | */ | |
374 | ||
f43df819 | 375 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 376 | |
377 | static void a_info(admin *a, const char *fmt, ...) | |
378 | { | |
379 | va_list ap; | |
f98df549 | 380 | |
3cdc3f3a | 381 | va_start(ap, fmt); |
de014da6 | 382 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 383 | va_end(ap); |
384 | } | |
385 | ||
386 | static void a_fail(admin *a, const char *fmt, ...) | |
387 | { | |
388 | va_list ap; | |
f98df549 | 389 | |
3cdc3f3a | 390 | va_start(ap, fmt); |
de014da6 | 391 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 392 | va_end(ap); |
393 | } | |
394 | ||
395 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
396 | * | |
397 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 398 | * @const char *status@ = status string |
3cdc3f3a | 399 | * @const char *fmt@ = pointer to format string |
de014da6 | 400 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 401 | * @size_t sz@ = size of raw string |
402 | * @va_list ap@ = arguments in list | |
403 | * @...@ = other arguments | |
404 | * | |
405 | * Returns: --- | |
406 | * | |
407 | * Use: Write a message to all admin connections matched by the given | |
408 | * filter. | |
409 | */ | |
410 | ||
de014da6 | 411 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 412 | const char *p, size_t sz) |
413 | { | |
414 | admin *a, *aa; | |
415 | dstr d = DSTR_INIT; | |
416 | ||
417 | if (!(flags & F_INIT)) | |
418 | return; | |
de014da6 | 419 | dstr_puts(&d, status); |
420 | if (p) { | |
421 | dstr_putc(&d, ' '); | |
3cdc3f3a | 422 | dstr_putm(&d, p, sz); |
de014da6 | 423 | } |
3cdc3f3a | 424 | dstr_putc(&d, '\n'); |
425 | p = d.buf; | |
426 | sz = d.len; | |
427 | for (a = admins; a; a = aa) { | |
428 | aa = a->next; | |
429 | if ((a->f & f_and) == f_eq) | |
430 | dosend(a, d.buf, d.len); | |
431 | } | |
410c8acf | 432 | dstr_destroy(&d); |
433 | } | |
434 | ||
b9adb829 | 435 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 436 | const char *fmt, va_list ap) |
437 | { | |
438 | dstr d = DSTR_INIT; | |
439 | ||
440 | if (!(flags & F_INIT)) | |
441 | return; | |
f43df819 | 442 | a_vformat(&d, fmt, ap); |
b9adb829 | 443 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 444 | dstr_destroy(&d); |
445 | } | |
446 | ||
b9adb829 | 447 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 448 | const char *fmt, ...) |
449 | { | |
450 | va_list ap; | |
f98df549 | 451 | |
3cdc3f3a | 452 | va_start(ap, fmt); |
b9adb829 | 453 | a_valert(f_and, f_eq, status, fmt, ap); |
3cdc3f3a | 454 | va_end(ap); |
455 | } | |
3cdc3f3a | 456 | |
410c8acf | 457 | /* --- @a_warn@ --- * |
458 | * | |
459 | * Arguments: @const char *fmt@ = pointer to format string | |
460 | * @...@ = other arguments | |
461 | * | |
462 | * Returns: --- | |
463 | * | |
464 | * Use: Informs all admin connections of a warning. | |
465 | */ | |
466 | ||
467 | void a_warn(const char *fmt, ...) | |
468 | { | |
469 | va_list ap; | |
410c8acf | 470 | |
410c8acf | 471 | va_start(ap, fmt); |
3cdc3f3a | 472 | if (flags & F_INIT) |
473 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 474 | else { |
f43df819 | 475 | dstr d = DSTR_INIT; |
3cdc3f3a | 476 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
477 | a_vformat(&d, fmt, ap); |
478 | dstr_putc(&d, '\n'); | |
479 | dstr_write(&d, stderr); | |
480 | dstr_destroy(&d); | |
410c8acf | 481 | } |
3cdc3f3a | 482 | va_end(ap); |
410c8acf | 483 | } |
484 | ||
485 | /* --- @a_trace@ --- * | |
486 | * | |
487 | * Arguments: @const char *p@ = pointer to a buffer | |
488 | * @size_t sz@ = size of the buffer | |
489 | * @void *v@ = uninteresting pointer | |
490 | * | |
491 | * Returns: --- | |
492 | * | |
3cdc3f3a | 493 | * Use: Custom trace output handler. Sends trace messages to |
494 | * interested admin connections. | |
410c8acf | 495 | */ |
496 | ||
497 | #ifndef NTRACE | |
498 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 499 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 500 | #endif |
501 | ||
3cdc3f3a | 502 | /* --- @a_notify@ --- * |
503 | * | |
504 | * Arguments: @const char *fmt@ = pointer to format string | |
505 | * @...@ = other arguments | |
506 | * | |
507 | * Returns: --- | |
508 | * | |
509 | * Use: Sends a notification to interested admin connections. | |
510 | */ | |
511 | ||
512 | void a_notify(const char *fmt, ...) | |
513 | { | |
514 | va_list ap; | |
515 | ||
516 | va_start(ap, fmt); | |
517 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
518 | va_end(ap); | |
519 | } | |
520 | ||
410c8acf | 521 | /* --- @a_quit@ --- * |
522 | * | |
523 | * Arguments: --- | |
524 | * | |
525 | * Returns: --- | |
526 | * | |
527 | * Use: Shuts things down nicely. | |
528 | */ | |
529 | ||
530 | void a_quit(void) | |
531 | { | |
42da2a58 | 532 | peer *p; |
533 | ||
410c8acf | 534 | close(sock.fd); |
535 | unlink(sockname); | |
de014da6 | 536 | while ((p = p_first()) != 0) |
537 | p_destroy(p); | |
410c8acf | 538 | exit(0); |
539 | } | |
540 | ||
541 | /* --- @a_sigdie@ --- * | |
542 | * | |
543 | * Arguments: @int sig@ = signal number | |
544 | * @void *v@ = an uninteresting argument | |
545 | * | |
546 | * Returns: --- | |
547 | * | |
548 | * Use Shuts down on receipt of a fatal signal. | |
549 | */ | |
550 | ||
551 | static void a_sigdie(int sig, void *v) | |
552 | { | |
553 | char *p; | |
554 | char buf[20]; | |
555 | ||
556 | switch (sig) { | |
557 | case SIGTERM: p = "SIGTERM"; break; | |
558 | case SIGINT: p = "SIGINT"; break; | |
559 | default: | |
3cdc3f3a | 560 | sprintf(buf, "%i", sig); |
410c8acf | 561 | p = buf; |
562 | break; | |
563 | } | |
f43df819 | 564 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 565 | a_quit(); |
566 | } | |
567 | ||
568 | /* --- @a_sighup@ --- * | |
569 | * | |
570 | * Arguments: @int sig@ = signal number | |
571 | * @void *v@ = an uninteresting argument | |
572 | * | |
573 | * Returns: --- | |
574 | * | |
575 | * Use Logs a message about SIGHUP not being useful. | |
576 | */ | |
577 | ||
578 | static void a_sighup(int sig, void *v) | |
f98df549 | 579 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 580 | |
0ba8de86 | 581 | /* --- @a_parsetime@ --- * |
582 | * | |
583 | * Arguments; @const char *p@ = time string to parse | |
584 | * | |
585 | * Returns: Time in seconds, or @< 0@ on error. | |
586 | */ | |
587 | ||
588 | static long a_parsetime(const char *p) | |
589 | { | |
590 | char *q; | |
591 | long t = strtol(p, &q, 0); | |
592 | ||
593 | switch (*q) { | |
594 | case 'd': t *= 24; | |
595 | case 'h': t *= 60; | |
596 | case 'm': t *= 60; | |
597 | case 's': if (q[1] != 0) | |
598 | default: t = -1; | |
599 | case 0: break; | |
600 | } | |
601 | return (t); | |
602 | } | |
603 | ||
37941236 | 604 | /* --- @a_findpeer@ --- * |
605 | * | |
606 | * Arguments: @admin *a@ = admin connection | |
607 | * @const char *pn@ = peer name | |
608 | * | |
609 | * Returns: The peer, or null if not there. | |
610 | * | |
611 | * Use: Finds a peer, reporting an error if it failed. | |
612 | */ | |
613 | ||
614 | static peer *a_findpeer(admin *a, const char *pn) | |
615 | { | |
616 | peer *p; | |
617 | ||
618 | if ((p = p_find(pn)) == 0) | |
f43df819 | 619 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 620 | return (p); |
621 | } | |
622 | ||
de014da6 | 623 | /*----- Backgrounded operations -------------------------------------------*/ |
624 | ||
060ca767 | 625 | #define BGTAG(bg) \ |
626 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
627 | ||
ff92ffd3 MW |
628 | /* --- @a_bgfind@ --- * |
629 | * | |
630 | * Arguments: @admin *a@ = a client block | |
631 | * @const char *tag@ = the requested tag | |
632 | * | |
633 | * Returns: The requested background job, or null. | |
634 | */ | |
635 | ||
636 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
637 | { | |
638 | admin_bgop *bg; | |
639 | ||
640 | for (bg = a->bg; bg; bg = bg->next) { | |
641 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
642 | return (bg); | |
643 | } | |
644 | return (0); | |
645 | } | |
646 | ||
de014da6 | 647 | /* --- @a_bgrelease@ --- * |
648 | * | |
649 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
650 | * | |
651 | * Returns: --- | |
652 | * | |
653 | * Use: Removes a backgrounded operation from the queue, since | |
654 | * (presumably) it's done. | |
655 | */ | |
656 | ||
657 | static void a_bgrelease(admin_bgop *bg) | |
658 | { | |
659 | admin *a = bg->a; | |
660 | ||
060ca767 | 661 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
662 | if (bg->tag) xfree(bg->tag); | |
663 | else selbuf_enable(&a->b); | |
664 | if (bg->next) bg->next->prev = bg->prev; | |
665 | if (bg->prev) bg->prev->next = bg->next; | |
666 | else a->bg = bg->next; | |
de014da6 | 667 | xfree(bg); |
547a9c13 | 668 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 669 | } |
670 | ||
671 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
672 | * | |
673 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
674 | * @const char *fmt@ = format string | |
675 | * @...@ = other arguments | |
676 | * | |
677 | * Returns: --- | |
678 | * | |
679 | * Use: Convenience functions for @a_write@. | |
680 | */ | |
681 | ||
682 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 683 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 684 | |
685 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
686 | { | |
687 | va_list ap; | |
688 | va_start(ap, fmt); | |
689 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
690 | va_end(ap); | |
691 | } | |
692 | ||
693 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
694 | { | |
695 | va_list ap; | |
696 | va_start(ap, fmt); | |
697 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
698 | va_end(ap); | |
699 | } | |
700 | ||
701 | /* --- @a_bgadd@ --- * | |
702 | * | |
703 | * Arguments: @admin *a@ = administration connection | |
704 | * @admin_bgop *bg@ = pointer to background operation | |
705 | * @const char *tag@ = background tag, or null for foreground | |
706 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
707 | * | |
ff92ffd3 | 708 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 709 | * |
710 | * Use: Links a background job into the list. | |
711 | */ | |
712 | ||
ff92ffd3 MW |
713 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
714 | void (*cancel)(admin_bgop *)) | |
de014da6 | 715 | { |
ff92ffd3 MW |
716 | if (tag) { |
717 | if (a_bgfind(a, tag)) { | |
718 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
719 | return (-1); | |
720 | } | |
de014da6 | 721 | bg->tag = xstrdup(tag); |
ff92ffd3 | 722 | } |
de014da6 | 723 | else { |
724 | bg->tag = 0; | |
725 | selbuf_disable(&a->b); | |
726 | } | |
727 | bg->a = a; | |
728 | bg->cancel = cancel; | |
729 | bg->next = a->bg; | |
730 | bg->prev = 0; | |
060ca767 | 731 | if (a->bg) a->bg->prev = bg; |
de014da6 | 732 | a->bg = bg; |
060ca767 | 733 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 734 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 735 | return (0); |
de014da6 | 736 | } |
737 | ||
5d46c0f8 MW |
738 | /*----- Job table manipulation --------------------------------------------*/ |
739 | ||
740 | #define JOB_SHIFT 16 | |
741 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
742 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
743 | ||
744 | #define JOB_END 0xfffffffful | |
745 | ||
746 | static unsigned long a_joboffset; | |
747 | ||
748 | /* --- @a_jobidencode@ --- * | |
749 | * | |
750 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
751 | * | |
752 | * Returns: A jobid for this job, in an internal static buffer. | |
753 | * | |
754 | * Use: Constructs a jobid. In order to dissuade people from | |
755 | * predicting jobids, we obfuscate them. | |
756 | * | |
757 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
758 | * are an index into a big array. The high 16 bits are a | |
759 | * sequence number recording how many times that slot has been | |
760 | * reused. | |
761 | * | |
762 | * This `raw' jobid is then obfuscated by adding a randomly- | |
763 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
764 | * odd constant. | |
765 | */ | |
766 | ||
767 | static const char *a_jobidencode(admin_svcop *svc) | |
768 | { | |
769 | admin_jobtable *j = &svc->prov->j; | |
770 | static char buf[10]; | |
771 | unsigned long pre; | |
772 | unsigned seq; | |
773 | ||
774 | assert(svc->index <= JOB_INDEXMASK); | |
775 | seq = j->v[svc->index].seq; | |
776 | assert(seq <= JOB_SEQMASK); | |
777 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
778 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
779 | return (buf); | |
780 | } | |
781 | ||
782 | /* --- @a_jobiddecode@ --- * | |
783 | * | |
784 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
785 | * @const char *jid@ = pointer to a jobid string | |
786 | * | |
787 | * Returns: A pointer to the job's @svcop@ structure. | |
788 | */ | |
789 | ||
790 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
791 | { | |
792 | unsigned i; | |
793 | unsigned long pre; | |
794 | ||
795 | if (jid[0] != 'J') | |
796 | return (0); | |
797 | for (i = 1; i < 9; i++) { | |
798 | if (!isxdigit((unsigned char)jid[i])) | |
799 | return (0); | |
800 | } | |
801 | if (jid[9] != 0) | |
802 | return (0); | |
803 | pre = strtoul(jid + 1, 0, 16); | |
804 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
805 | i = pre & JOB_INDEXMASK; | |
806 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
807 | return (0); | |
808 | return (j->v[i].u.op); | |
809 | } | |
810 | ||
811 | /* --- @a_jobcreate@ --- * | |
812 | * | |
813 | * Arguments: @admin *a@ = pointer to administration client | |
814 | * | |
815 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
816 | * | |
817 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
818 | */ | |
819 | ||
820 | static admin_svcop *a_jobcreate(admin *a) | |
821 | { | |
822 | admin_svcop *svc; | |
823 | unsigned i; | |
824 | unsigned sz; | |
825 | admin_jobtable *j = &a->j; | |
826 | ||
827 | if (j->free != JOB_END) { | |
828 | i = j->free; | |
829 | j->free = j->v[i].u.next; | |
830 | } else { | |
831 | if (j->n == j->sz) { | |
832 | if (j->sz > JOB_INDEXMASK) | |
833 | return (0); | |
834 | sz = j->sz; | |
835 | if (!sz) { | |
836 | j->sz = 16; | |
837 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
838 | } else { | |
839 | j->sz = sz << 1; | |
840 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
841 | } | |
842 | } | |
843 | i = j->n++; | |
844 | j->v[i].seq = 0; | |
845 | } | |
846 | svc = xmalloc(sizeof(*svc)); | |
847 | svc->index = i; | |
848 | svc->prov = a; | |
849 | svc->next = j->active; | |
850 | svc->prev = 0; | |
851 | if (j->active) j->active->prev = svc; | |
852 | j->active = svc; | |
853 | j->v[i].u.op = svc; | |
854 | IF_TRACING(T_ADMIN, { | |
855 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
856 | }) | |
857 | return (svc); | |
858 | } | |
859 | ||
860 | /* --- @a_jobdestroy@ --- * | |
861 | * | |
862 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
863 | * | |
864 | * Returns: --- | |
865 | * | |
866 | * Use: Frees up a completed (or cancelled) job. | |
867 | */ | |
868 | ||
869 | static void a_jobdestroy(admin_svcop *svc) | |
870 | { | |
871 | admin *a = svc->prov; | |
872 | admin_jobtable *j = &a->j; | |
873 | unsigned i = svc->index; | |
874 | ||
875 | IF_TRACING(T_ADMIN, { | |
876 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
877 | }) | |
878 | assert(j->v[i].u.op = svc); | |
879 | j->v[i].u.next = j->free; | |
880 | j->v[i].seq++; | |
881 | j->free = i; | |
882 | if (svc->next) svc->next->prev = svc->prev; | |
883 | if (svc->prev) svc->prev->next = svc->next; | |
884 | else j->active = svc->next; | |
885 | } | |
886 | ||
887 | /* --- @a_jobtableinit@ --- * | |
888 | * | |
889 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
890 | * | |
891 | * Returns: --- | |
892 | * | |
893 | * Use: Initializes a job table. | |
894 | */ | |
895 | ||
896 | static void a_jobtableinit(admin_jobtable *j) | |
897 | { | |
898 | if (!a_joboffset) | |
899 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
900 | j->n = j->sz = 0; | |
901 | j->active = 0; | |
902 | j->free = JOB_END; | |
903 | j->v = 0; | |
904 | } | |
905 | ||
906 | /* --- @a_jobtablefinal@ --- * | |
907 | * | |
908 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
909 | * | |
910 | * Returns: --- | |
911 | * | |
912 | * Use: Closes down a job table. | |
913 | */ | |
914 | ||
915 | static void a_jobtablefinal(admin_jobtable *j) | |
916 | { | |
917 | admin_svcop *svc, *ssvc; | |
918 | ||
919 | for (svc = j->active; svc; svc = ssvc) { | |
920 | ssvc = svc->next; | |
921 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
922 | a_bgrelease(&svc->bg); | |
923 | } | |
924 | if (j->v) xfree(j->v); | |
925 | } | |
926 | ||
be6a1b7a MW |
927 | /*----- Services infrastructure -------------------------------------------*/ |
928 | ||
929 | /* --- @a_svcfind@ --- * | |
930 | * | |
931 | * Arguments: @admin *a@ = the requesting client | |
932 | * @const char *name@ = service name wanted | |
933 | * | |
934 | * Returns: The service requested, or null. | |
935 | * | |
936 | * Use: Finds a service; reports an error if the service couldn't be | |
937 | * found. | |
938 | */ | |
939 | ||
940 | static admin_service *a_svcfind(admin *a, const char *name) | |
941 | { | |
942 | admin_service *svc; | |
943 | ||
944 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
945 | a_fail(a, "unknown-service", "%s", name, A_END); | |
946 | return (0); | |
947 | } | |
948 | return (svc); | |
949 | } | |
950 | ||
951 | /* --- @a_svcunlink@ --- * | |
952 | * | |
953 | * Arguments: @admin_service *svc@ = pointer to service structure | |
954 | * | |
955 | * Returns: --- | |
956 | * | |
957 | * Use: Unlinks the service from its provider, without issuing a | |
958 | * message or freeing the structure. The version string is | |
959 | * freed, however. | |
960 | */ | |
961 | ||
962 | static void a_svcunlink(admin_service *svc) | |
963 | { | |
964 | if (svc->next) | |
965 | svc->next->prev = svc->prev; | |
966 | if (svc->prev) | |
967 | svc->prev->next = svc->next; | |
968 | else | |
969 | svc->prov->svcs = svc->next; | |
970 | xfree(svc->version); | |
971 | } | |
972 | ||
973 | /* --- @a_svcrelease@ --- * | |
974 | * | |
975 | * Arguments: @admin_service *svc@ = pointer to service structure | |
976 | * | |
977 | * Returns: --- | |
978 | * | |
979 | * Use: Releases a service and frees its structure. | |
980 | */ | |
981 | ||
982 | static void a_svcrelease(admin_service *svc) | |
983 | { | |
984 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
985 | a_svcunlink(svc); | |
986 | sym_remove(&a_svcs, svc); | |
de014da6 | 987 | } |
988 | ||
37941236 | 989 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 990 | |
37941236 | 991 | /* --- @a_resolved@ --- * |
de014da6 | 992 | * |
37941236 | 993 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
994 | * @void *v@ = pointer to resolver operation | |
de014da6 | 995 | * |
996 | * Returns: --- | |
997 | * | |
37941236 | 998 | * Use: Handles a completed name resolution. |
de014da6 | 999 | */ |
1000 | ||
37941236 | 1001 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 1002 | { |
37941236 | 1003 | admin_resop *r = v; |
1004 | ||
1005 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
1006 | TIMER; | |
1007 | if (!h) { | |
f43df819 | 1008 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 1009 | r->func(r, ARES_FAIL); |
1010 | } else { | |
1011 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
1012 | r->func(r, ARES_OK); | |
1013 | } | |
1014 | sel_rmtimer(&r->t); | |
1015 | xfree(r->addr); | |
1016 | a_bgrelease(&r->bg); | |
1017 | } | |
de014da6 | 1018 | |
37941236 | 1019 | /* --- @a_restimer@ --- * |
de014da6 | 1020 | * |
37941236 | 1021 | * Arguments: @struct timeval *tv@ = timer |
1022 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1023 | * |
1024 | * Returns: --- | |
1025 | * | |
37941236 | 1026 | * Use: Times out a resolver. |
de014da6 | 1027 | */ |
1028 | ||
37941236 | 1029 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 1030 | { |
37941236 | 1031 | admin_resop *r = v; |
1032 | ||
1033 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1034 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1035 | r->func(r, ARES_FAIL); |
1036 | bres_abort(&r->r); | |
1037 | xfree(r->addr); | |
1038 | a_bgrelease(&r->bg); | |
de014da6 | 1039 | } |
1040 | ||
37941236 | 1041 | /* --- @a_rescancel@ --- * |
de014da6 | 1042 | * |
37941236 | 1043 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1044 | * |
1045 | * Returns: --- | |
1046 | * | |
37941236 | 1047 | * Use: Cancels an add operation. |
de014da6 | 1048 | */ |
1049 | ||
37941236 | 1050 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1051 | { |
37941236 | 1052 | admin_resop *r = (admin_resop *)bg; |
1053 | ||
1054 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1055 | r->func(r, ARES_FAIL); | |
1056 | sel_rmtimer(&r->t); | |
1057 | xfree(r->addr); | |
1058 | bres_abort(&r->r); | |
de014da6 | 1059 | } |
37941236 | 1060 | |
1061 | /* --- @a_resolve@ --- * | |
410c8acf | 1062 | * |
37941236 | 1063 | * Arguments: @admin *a@ = administration connection |
1064 | * @admin_resop *r@ = resolver operation to run | |
1065 | * @const char *tag@ = background operation tag | |
1066 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1067 | * @unsigned ac@ = number of remaining arguments | |
1068 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1069 | * |
1070 | * Returns: --- | |
1071 | * | |
37941236 | 1072 | * Use: Cranks up a resolver job. |
410c8acf | 1073 | */ |
1074 | ||
37941236 | 1075 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1076 | void (*func)(struct admin_resop *, int), | |
1077 | unsigned ac, char *av[]) | |
410c8acf | 1078 | { |
37941236 | 1079 | struct timeval tv; |
1080 | unsigned long pt; | |
1081 | char *p; | |
1082 | int i = 0; | |
fd3cf232 | 1083 | |
37941236 | 1084 | /* --- Fill in the easy bits of address --- */ |
1085 | ||
452bf3f6 | 1086 | r->bg.tag = "<starting>"; |
37941236 | 1087 | r->addr = 0; |
1088 | r->func = func; | |
1089 | if (mystrieq(av[i], "inet")) i++; | |
1090 | if (ac - i != 2) { | |
f43df819 | 1091 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS PORT", A_END); |
37941236 | 1092 | goto fail; |
1093 | } | |
1094 | r->sa.sin.sin_family = AF_INET; | |
1095 | r->sasz = sizeof(r->sa.sin); | |
1096 | r->addr = xstrdup(av[i]); | |
1097 | pt = strtoul(av[i + 1], &p, 0); | |
1098 | if (*p) { | |
1099 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1100 | if (!s) { | |
f43df819 | 1101 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); |
37941236 | 1102 | goto fail; |
1103 | } | |
1104 | pt = ntohs(s->s_port); | |
410c8acf | 1105 | } |
37941236 | 1106 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1107 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1108 | goto fail; |
1109 | } | |
1110 | r->sa.sin.sin_port = htons(pt); | |
1111 | ||
1112 | /* --- Report backgrounding --- * | |
1113 | * | |
1114 | * Do this for consistency of interface, even if we're going to get the | |
1115 | * answer straight away. | |
1116 | */ | |
1117 | ||
ff92ffd3 MW |
1118 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1119 | goto fail; | |
37941236 | 1120 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
1121 | a->seq, BGTAG(r), r->addr); ) | |
1122 | ||
1123 | /* --- If the name is numeric, do it the easy way --- */ | |
1124 | ||
1125 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { | |
1126 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1127 | func(r, ARES_OK); | |
1128 | xfree(r->addr); | |
1129 | a_bgrelease(&r->bg); | |
1130 | return; | |
1131 | } | |
1132 | ||
1133 | /* --- Store everything for later and crank up the resolver --- */ | |
1134 | ||
1135 | gettimeofday(&tv, 0); | |
1136 | tv.tv_sec += T_RESOLVE; | |
1137 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
1138 | bres_byname(&r->r, r->addr, a_resolved, r); | |
1139 | return; | |
1140 | ||
1141 | fail: | |
1142 | func(r, ARES_FAIL); | |
1143 | if (r->addr) xfree(r->addr); | |
1144 | xfree(r); | |
410c8acf | 1145 | } |
1146 | ||
e7a4d919 MW |
1147 | /*----- Option parsing ----------------------------------------------------*/ |
1148 | ||
1149 | #define OPTIONS(argc, argv, guts) do { \ | |
1150 | char **o_av = argv; \ | |
1151 | for (;; o_av++) { \ | |
1152 | if (!*o_av) \ | |
1153 | break; \ | |
1154 | if (mystrieq(*o_av, "--")) { \ | |
1155 | o_av++; \ | |
1156 | break; \ | |
1157 | } \ | |
1158 | guts \ | |
1159 | if (**o_av == '-') \ | |
1160 | goto bad_syntax; \ | |
1161 | break; \ | |
1162 | } \ | |
1163 | argc -= o_av - argv; \ | |
1164 | argv = o_av; \ | |
1165 | } while (0) | |
1166 | ||
1167 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1168 | ||
1169 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1170 | const char *arg; \ | |
1171 | arg = *++o_av; \ | |
1172 | if (!arg) goto bad_syntax; \ | |
1173 | guts \ | |
1174 | }) | |
1175 | ||
1176 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1177 | long arg; \ | |
1178 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1179 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1180 | goto fail; \ | |
1181 | } \ | |
1182 | guts \ | |
1183 | }) | |
1184 | ||
37941236 | 1185 | /*----- Adding peers ------------------------------------------------------*/ |
1186 | ||
1187 | /* --- @a_doadd@ --- * | |
410c8acf | 1188 | * |
37941236 | 1189 | * Arguments: @admin_resop *r@ = resolver operation |
1190 | * @int rc@ = how it worked | |
410c8acf | 1191 | * |
1192 | * Returns: --- | |
1193 | * | |
37941236 | 1194 | * Use: Handles a completed resolution. |
410c8acf | 1195 | */ |
1196 | ||
37941236 | 1197 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1198 | { |
37941236 | 1199 | admin_addop *add = (admin_addop *)r; |
1200 | ||
1201 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1202 | ||
1203 | if (rc == ARES_OK) { | |
1204 | add->peer.sasz = add->r.sasz; | |
1205 | add->peer.sa = add->r.sa; | |
1206 | if (p_find(add->peer.name)) | |
f43df819 | 1207 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 1208 | else if (!p_create(&add->peer)) |
f43df819 | 1209 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 1210 | else |
1211 | a_bgok(&add->r.bg); | |
1212 | } | |
de014da6 | 1213 | |
37941236 | 1214 | xfree(add->peer.name); |
410c8acf | 1215 | } |
1216 | ||
1217 | /* --- @acmd_add@ --- * | |
1218 | * | |
1219 | * Arguments: @admin *a@ = connection which requested the addition | |
1220 | * @unsigned ac@ = argument count | |
1221 | * @char *av[]@ = pointer to the argument list | |
1222 | * | |
1223 | * Returns: --- | |
1224 | * | |
1225 | * Use: Adds a new peer. | |
1226 | */ | |
1227 | ||
1228 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
1229 | { | |
de014da6 | 1230 | const char *tag = 0; |
9986f0b5 | 1231 | admin_addop *add; |
410c8acf | 1232 | |
0ba8de86 | 1233 | /* --- Set stuff up --- */ |
1234 | ||
de014da6 | 1235 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 1236 | add->peer.name = 0; |
de014da6 | 1237 | add->peer.t_ka = 0; |
1238 | add->peer.tops = tun_default; | |
37941236 | 1239 | |
42da2a58 | 1240 | /* --- Parse options --- */ |
1241 | ||
e7a4d919 MW |
1242 | OPTIONS(ac, av, { |
1243 | OPTARG("-background", arg, { tag = arg; }) | |
1244 | OPTARG("-tunnel", arg, { | |
1245 | unsigned i; | |
1246 | for (i = 0;; i++) { | |
1247 | if (!tunnels[i]) { | |
1248 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 1249 | goto fail; |
42da2a58 | 1250 | } |
e7a4d919 MW |
1251 | if (mystrieq(arg, tunnels[i]->name)) { |
1252 | add->peer.tops = tunnels[i]; | |
42da2a58 | 1253 | break; |
1254 | } | |
1255 | } | |
e7a4d919 MW |
1256 | }) |
1257 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
1258 | }); | |
42da2a58 | 1259 | |
9986f0b5 MW |
1260 | /* --- Make sure someone's not got there already --- */ |
1261 | ||
e7a4d919 | 1262 | if (!*av) |
9986f0b5 | 1263 | goto bad_syntax; |
e7a4d919 MW |
1264 | if (p_find(*av)) { |
1265 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1266 | goto fail; |
42da2a58 | 1267 | } |
e7a4d919 MW |
1268 | add->peer.name = xstrdup(*av++); |
1269 | ac--; | |
42da2a58 | 1270 | |
37941236 | 1271 | /* --- Crank up the resolver --- */ |
de014da6 | 1272 | |
e7a4d919 | 1273 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1274 | return; |
1275 | ||
37941236 | 1276 | /* --- Clearing up --- */ |
1277 | ||
42da2a58 | 1278 | bad_syntax: |
9986f0b5 | 1279 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1280 | fail: |
9986f0b5 | 1281 | if (add->peer.name) xfree(add->peer.name); |
37941236 | 1282 | xfree(add); |
0ba8de86 | 1283 | return; |
1284 | } | |
1285 | ||
1286 | /*----- Ping --------------------------------------------------------------*/ | |
1287 | ||
de014da6 | 1288 | /* --- @a_pingcancel@ --- * |
1289 | * | |
1290 | * Arguments: @admin_bgop *bg@ = background operation block | |
1291 | * | |
1292 | * Returns: --- | |
1293 | * | |
1294 | * Use: Cancels a running ping. | |
1295 | */ | |
1296 | ||
1297 | static void a_pingcancel(admin_bgop *bg) | |
1298 | { | |
1299 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1300 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1301 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1302 | } | |
1303 | ||
0ba8de86 | 1304 | /* --- @a_pong@ --- * |
1305 | * | |
1306 | * Arguments: @int rc@ = return code | |
de014da6 | 1307 | * @void *v@ = ping operation block |
0ba8de86 | 1308 | * |
1309 | * Returns: --- | |
1310 | * | |
1311 | * Use: Collects what happened to a ping message. | |
1312 | */ | |
1313 | ||
de014da6 | 1314 | static void a_pong(int rc, void *v) |
0ba8de86 | 1315 | { |
de014da6 | 1316 | admin_pingop *pg = v; |
0ba8de86 | 1317 | struct timeval tv; |
1318 | double millis; | |
1319 | ||
0ba8de86 | 1320 | switch (rc) { |
1321 | case PING_OK: | |
1322 | gettimeofday(&tv, 0); | |
de014da6 | 1323 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1324 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1325 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1326 | a_bgok(&pg->bg); |
0ba8de86 | 1327 | break; |
1328 | case PING_TIMEOUT: | |
f43df819 | 1329 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1330 | a_bgok(&pg->bg); |
0ba8de86 | 1331 | break; |
1332 | case PING_PEERDIED: | |
f43df819 | 1333 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1334 | a_bgok(&pg->bg); |
0ba8de86 | 1335 | break; |
1336 | default: | |
1337 | abort(); | |
1338 | } | |
060ca767 | 1339 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1340 | a_bgrelease(&pg->bg); |
0ba8de86 | 1341 | } |
1342 | ||
1343 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1344 | * | |
1345 | * Arguments: @admin *a@ = connection which requested the ping | |
1346 | * @unsigned ac@ = argument count | |
1347 | * @char *av[]@ = pointer to the argument list | |
1348 | * | |
1349 | * Returns: --- | |
1350 | * | |
1351 | * Use: Pings a peer. | |
1352 | */ | |
1353 | ||
1354 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1355 | const char *cmd, unsigned msg) | |
1356 | { | |
1357 | long t = T_PING; | |
0ba8de86 | 1358 | peer *p; |
de014da6 | 1359 | admin_pingop *pg = 0; |
1360 | const char *tag = 0; | |
0ba8de86 | 1361 | |
e7a4d919 MW |
1362 | OPTIONS(ac, av, { |
1363 | OPTARG("-background", arg, { tag = arg; }) | |
1364 | OPTTIME("-timeout", arg, { t = arg; }) | |
1365 | }); | |
1366 | if (!*av || av[1]) goto bad_syntax; | |
1367 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1368 | return; |
de014da6 | 1369 | pg = xmalloc(sizeof(*pg)); |
1370 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1371 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1372 | goto fail; | |
060ca767 | 1373 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1374 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1375 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1376 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1377 | a_bgrelease(&pg->bg); |
1378 | } | |
0ba8de86 | 1379 | return; |
1380 | ||
1381 | bad_syntax: | |
f43df819 | 1382 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1383 | fail: |
ff92ffd3 | 1384 | if (pg) xfree(pg); |
42da2a58 | 1385 | return; |
410c8acf | 1386 | } |
1387 | ||
0ba8de86 | 1388 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1389 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1390 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1391 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1392 | |
be6a1b7a MW |
1393 | /*----- Service commands --------------------------------------------------*/ |
1394 | ||
1395 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1396 | { | |
1397 | admin_service *svc; | |
1398 | unsigned f; | |
1399 | ||
1400 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1401 | if (f) { | |
1402 | if (versioncmp(av[1], svc->version) <= 0) { | |
1403 | a_fail(a, | |
1404 | "service-exists", | |
1405 | "%s", SYM_NAME(svc), | |
1406 | "%s", svc->version, | |
1407 | A_END); | |
1408 | return; | |
1409 | } | |
1410 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1411 | a_svcunlink(svc); | |
1412 | } | |
1413 | svc->prov = a; | |
1414 | svc->version = xstrdup(av[1]); | |
1415 | svc->next = a->svcs; | |
1416 | svc->prev = 0; | |
1417 | if (a->svcs) a->svcs->prev = svc; | |
1418 | a->svcs = svc; | |
1419 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1420 | a_ok(a); | |
1421 | } | |
1422 | ||
1423 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1424 | { | |
1425 | admin_service *svc; | |
1426 | ||
1427 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1428 | return; | |
1429 | if (svc->prov != a) { | |
1430 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1431 | return; | |
1432 | } | |
1433 | a_svcrelease(svc); | |
1434 | a_ok(a); | |
1435 | } | |
1436 | ||
1437 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1438 | { | |
1439 | admin_service *svc; | |
1440 | ||
1441 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1442 | return; | |
1443 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1444 | a_fail(a, "service-too-old", | |
1445 | "%s", SYM_NAME(svc), | |
1446 | "%s", svc->version, | |
1447 | A_END); | |
1448 | return; | |
1449 | } | |
1450 | a_ok(a); | |
1451 | } | |
1452 | ||
1453 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1454 | { | |
1455 | admin_service *svc; | |
1456 | ||
1457 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1458 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1459 | a_ok(a); | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1464 | { | |
1465 | admin_service *svc; | |
1466 | sym_iter i; | |
1467 | ||
1468 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1469 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1470 | a_ok(a); | |
1471 | } | |
1472 | ||
ef2f29c9 MW |
1473 | static void a_canceljob(admin_bgop *bg) |
1474 | { | |
1475 | admin_svcop *svc = (admin_svcop *)bg; | |
1476 | ||
1477 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1478 | a_jobdestroy(svc); | |
1479 | } | |
1480 | ||
1481 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1482 | { | |
1483 | const char *tag = 0; | |
1484 | admin_service *svc; | |
1485 | admin_svcop *svcop; | |
1486 | const char *ver = 0; | |
1487 | dstr d = DSTR_INIT; | |
1488 | ||
1489 | OPTIONS(ac, av, { | |
1490 | OPTARG("-background", arg, { tag = arg; }) | |
1491 | OPTARG("-version", arg, { ver = arg; }) | |
1492 | }); | |
1493 | if (!*av) goto bad_syntax; | |
1494 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1495 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1496 | a_fail(a, "service-too-old", | |
1497 | "%s", SYM_NAME(svc), | |
1498 | "%s", svc->version, | |
1499 | A_END); | |
1500 | goto fail; | |
1501 | } | |
1502 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1503 | a_fail(a, "provider-overloaded", A_END); | |
1504 | goto fail; | |
1505 | } | |
1506 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1507 | a_jobdestroy(svcop); | |
1508 | goto fail; | |
1509 | } | |
1510 | a_write(svc->prov, "SVCJOB", 0, | |
1511 | "%s", a_jobidencode(svcop), | |
1512 | "?TOKENS", av, | |
1513 | A_END); | |
1514 | goto done; | |
1515 | ||
1516 | bad_syntax: | |
1517 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1518 | fail: | |
1519 | done: | |
1520 | dstr_destroy(&d); | |
1521 | return; | |
1522 | } | |
1523 | ||
1524 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1525 | { | |
1526 | admin_svcop *svc; | |
1527 | ||
1528 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1529 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1530 | return; | |
1531 | } | |
1532 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1533 | if (donep) { | |
1534 | a_jobdestroy(svc); | |
1535 | a_bgrelease(&svc->bg); | |
1536 | } | |
1537 | a_ok(a); | |
1538 | } | |
1539 | ||
1540 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1541 | { a_replycmd(a, "OK", 1, av); } | |
1542 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1543 | { a_replycmd(a, "INFO", 0, av); } | |
1544 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1545 | { a_replycmd(a, "FAIL", 1, av); } | |
1546 | ||
410c8acf | 1547 | /*----- Administration commands -------------------------------------------*/ |
1548 | ||
1549 | /* --- Miscellaneous commands --- */ | |
1550 | ||
3cdc3f3a | 1551 | /* --- @traceish@ --- * |
1552 | * | |
1553 | * Arguments: @admin *a@ = connection to complain on | |
1554 | * @unsigned ac@ = number of arguments | |
1555 | * @char *av[]@ = vector of arguments | |
1556 | * @const char *what@ = what we're messing with | |
1557 | * @const trace_opt *tt@ = options table | |
1558 | * @unsigned *ff@ = where the flags are | |
1559 | * | |
1560 | * Returns: Nonzero if anything changed. | |
1561 | * | |
1562 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1563 | */ | |
410c8acf | 1564 | |
3cdc3f3a | 1565 | static int traceish(admin *a, unsigned ac, char *av[], |
1566 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1567 | { |
3cdc3f3a | 1568 | int ch = 0; |
1569 | ||
410c8acf | 1570 | if (!ac || strcmp(av[0], "?") == 0) { |
1571 | const trace_opt *t; | |
3cdc3f3a | 1572 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1573 | a_info(a, "*%c%c %s", |
1574 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1575 | } |
1576 | } else { | |
1577 | unsigned sense = 1; | |
3cdc3f3a | 1578 | unsigned f = *ff; |
1579 | const trace_opt *t; | |
410c8acf | 1580 | char *p = av[0]; |
1581 | ||
1582 | while (*p) { | |
1583 | switch (*p) { | |
1584 | case '+': sense = 1; break; | |
1585 | case '-': sense = 0; break; | |
1586 | default: | |
3cdc3f3a | 1587 | for (t = tt; t->ch; t++) { |
1588 | if (t->ch == *p) { | |
1589 | if (sense) f |= t->f; | |
1590 | else f &= ~t->f; | |
410c8acf | 1591 | goto tropt_ok; |
1592 | } | |
1593 | } | |
f43df819 | 1594 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1595 | return (0); |
410c8acf | 1596 | tropt_ok:; |
1597 | break; | |
1598 | } | |
1599 | p++; | |
1600 | } | |
3cdc3f3a | 1601 | *ff = f; |
1602 | ch = 1; | |
410c8acf | 1603 | } |
3cdc3f3a | 1604 | a_ok(a); |
1605 | return (ch); | |
1606 | } | |
1607 | ||
1608 | #ifndef NTRACE | |
1609 | ||
1610 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1611 | { | |
1612 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1613 | trace_level(tr_flags); | |
410c8acf | 1614 | } |
1615 | ||
1616 | #endif | |
1617 | ||
3cdc3f3a | 1618 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1619 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1620 | |
3cdc3f3a | 1621 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1622 | const char *status, char *av[]) |
1623 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1624 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1625 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1626 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1627 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1628 | |
410c8acf | 1629 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1630 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1631 | |
410c8acf | 1632 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1633 | { | |
1634 | if (flags & F_DAEMON) | |
f43df819 | 1635 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1636 | else { |
f43df819 | 1637 | a_notify("DAEMON", A_END); |
93bee2c4 | 1638 | if (a_stdin) |
410c8acf | 1639 | a_destroy(a_stdin); |
410c8acf | 1640 | if (u_daemon()) |
f43df819 | 1641 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1642 | else { |
410c8acf | 1643 | flags |= F_DAEMON; |
3cdc3f3a | 1644 | a_ok(a); |
93bee2c4 | 1645 | } |
410c8acf | 1646 | } |
1647 | } | |
1648 | ||
ff92ffd3 MW |
1649 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1650 | { | |
1651 | admin_bgop *bg; | |
1652 | ||
1653 | for (bg = a->bg; bg; bg = bg->next) { | |
1654 | assert(bg->tag); | |
1655 | a_info(a, "%s", bg->tag, A_END); | |
1656 | } | |
1657 | a_ok(a); | |
1658 | } | |
1659 | ||
1660 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1661 | { | |
1662 | admin_bgop *bg; | |
1663 | ||
1664 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1665 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1666 | else { | |
1667 | bg->cancel(bg); | |
1668 | a_bgrelease(bg); | |
1669 | a_ok(a); | |
1670 | } | |
1671 | } | |
1672 | ||
410c8acf | 1673 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1674 | { | |
1675 | peer *p; | |
f98df549 | 1676 | |
410c8acf | 1677 | for (p = p_first(); p; p = p_next(p)) |
f43df819 | 1678 | a_info(a, "%s", p_name(p), A_END); |
3cdc3f3a | 1679 | a_ok(a); |
410c8acf | 1680 | } |
1681 | ||
1682 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1683 | { | |
1684 | peer *p; | |
1685 | ||
37941236 | 1686 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1687 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1688 | a_ok(a); |
1689 | } | |
410c8acf | 1690 | } |
1691 | ||
64cf2223 MW |
1692 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1693 | { | |
1694 | peer *p; | |
1695 | ||
1696 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1697 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1698 | p_setifname(p, av[1]); | |
1699 | a_ok(a); | |
1700 | } | |
1701 | } | |
1702 | ||
37941236 | 1703 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1704 | { | |
1705 | buf b; | |
1706 | ||
1707 | buf_init(&b, buf_i, PKBUFSZ); | |
1708 | c_new(&b); | |
f43df819 | 1709 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1710 | a_ok(a); |
1711 | } | |
1712 | ||
1713 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1714 | { | |
1715 | base64_ctx b64; | |
1716 | buf b; | |
1717 | dstr d = DSTR_INIT; | |
1718 | ||
1719 | base64_init(&b64); | |
1720 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1721 | base64_decode(&b64, 0, 0, &d); | |
1722 | buf_init(&b, d.buf, d.len); | |
1723 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1724 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1725 | else |
1726 | a_ok(a); | |
1727 | dstr_destroy(&d); | |
1728 | } | |
1729 | ||
1730 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1731 | { | |
1732 | peer *p; | |
1733 | base64_ctx b64; | |
1734 | dstr d = DSTR_INIT; | |
1735 | ||
1736 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1737 | base64_init(&b64); | |
1738 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1739 | base64_decode(&b64, 0, 0, &d); | |
1740 | p_greet(p, d.buf, d.len); | |
1741 | dstr_destroy(&d); | |
1742 | a_ok(a); | |
1743 | } | |
1744 | } | |
1745 | ||
410c8acf | 1746 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1747 | { | |
1748 | peer *p; | |
1749 | const addr *ad; | |
1750 | ||
37941236 | 1751 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1752 | ad = p_addr(p); |
1753 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1754 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1755 | a_ok(a); |
410c8acf | 1756 | } |
1757 | } | |
1758 | ||
060ca767 | 1759 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1760 | { | |
1761 | peer *p; | |
1762 | const peerspec *ps; | |
1763 | ||
37941236 | 1764 | if ((p = a_findpeer(a, av[0])) != 0) { |
1765 | ps = p_spec(p); | |
f43df819 MW |
1766 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
1767 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); | |
37941236 | 1768 | a_ok(a); |
060ca767 | 1769 | } |
060ca767 | 1770 | } |
1771 | ||
1772 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1773 | { | |
f43df819 MW |
1774 | a_info(a, "implementation=edgeware-tripe", A_END); |
1775 | a_info(a, "version=%s", VERSION, A_END); | |
1776 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1777 | a_ok(a); |
1778 | } | |
1779 | ||
c7053da9 | 1780 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1781 | { | |
1782 | peer *p; | |
1783 | stats *st; | |
1784 | ||
37941236 | 1785 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1786 | return; |
060ca767 | 1787 | |
1788 | st = p_stats(p); | |
f43df819 MW |
1789 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1790 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1791 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
1792 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
1793 | a_info(a, | |
1794 | "packets-out=%lu", st->n_out, | |
1795 | "bytes-out=%lu", st->sz_out, | |
1796 | A_END); | |
1797 | a_info(a, | |
1798 | "keyexch-packets-in=%lu", st->n_kxin, | |
1799 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
1800 | A_END); | |
1801 | a_info(a, | |
1802 | "keyexch-packets-out=%lu", st->n_kxout, | |
1803 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
1804 | A_END); | |
1805 | a_info(a, | |
1806 | "ip-packets-in=%lu", st->n_ipin, | |
1807 | "ip-bytes-in=%lu", st->sz_ipin, | |
1808 | A_END); | |
1809 | a_info(a, | |
1810 | "ip-packets-out=%lu", st->n_ipout, | |
1811 | "ip-bytes-out=%lu", st->sz_ipout, | |
1812 | A_END); | |
f43df819 | 1813 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 1814 | a_ok(a); |
c7053da9 | 1815 | } |
1816 | ||
410c8acf | 1817 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1818 | { | |
1819 | peer *p; | |
f98df549 | 1820 | |
37941236 | 1821 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1822 | p_destroy(p); |
3cdc3f3a | 1823 | a_ok(a); |
410c8acf | 1824 | } |
1825 | } | |
1826 | ||
0ba8de86 | 1827 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1828 | { | |
1829 | peer *p; | |
f98df549 | 1830 | |
37941236 | 1831 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1832 | kx_start(&p->kx, 1); |
0ba8de86 | 1833 | a_ok(a); |
1834 | } | |
1835 | } | |
1836 | ||
de014da6 | 1837 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1838 | { p_keyreload(); a_ok(a); } | |
1839 | ||
410c8acf | 1840 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1841 | { | |
f43df819 | 1842 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1843 | a_ok(a); |
410c8acf | 1844 | a_quit(); |
1845 | } | |
1846 | ||
3cdc3f3a | 1847 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1848 | { | |
f43df819 | 1849 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1850 | a_ok(a); |
1851 | } | |
1852 | ||
42da2a58 | 1853 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1854 | { | |
1855 | int i; | |
f98df549 | 1856 | |
42da2a58 | 1857 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1858 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1859 | a_ok(a); |
1860 | } | |
1861 | ||
410c8acf | 1862 | /* --- The command table and help --- */ |
1863 | ||
1864 | typedef struct acmd { | |
1865 | const char *name; | |
1866 | const char *help; | |
1867 | unsigned argmin, argmax; | |
1868 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1869 | } acmd; | |
1870 | ||
1871 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1872 | ||
1873 | static const acmd acmdtab[] = { | |
9986f0b5 | 1874 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1875 | { "addr", "PEER", 1, 1, acmd_addr }, |
ff92ffd3 | 1876 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1877 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1878 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1879 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1880 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1881 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1882 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1883 | { "help", 0, 0, 0, acmd_help }, | |
1884 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1885 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1886 | { "kill", "PEER", 1, 1, acmd_kill }, |
1887 | { "list", 0, 0, 0, acmd_list }, | |
1888 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1889 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1890 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1891 | { "port", 0, 0, 0, acmd_port }, | |
1892 | { "quit", 0, 0, 0, acmd_quit }, | |
1893 | { "reload", 0, 0, 0, acmd_reload }, | |
1894 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1895 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
be6a1b7a MW |
1896 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
1897 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
1898 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
1899 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 1900 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 1901 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
1902 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
1903 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
1904 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
1905 | 2, 0xffff, acmd_svcsubmit }, | |
f43df819 | 1906 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1907 | #ifndef NTRACE |
f43df819 | 1908 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1909 | #endif |
f43df819 MW |
1910 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1911 | { "version", 0, 0, 0, acmd_version }, | |
1912 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
1913 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, | |
410c8acf | 1914 | { 0, 0, 0, 0, 0 } |
1915 | }; | |
1916 | ||
1917 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1918 | { | |
1919 | const acmd *c; | |
f98df549 | 1920 | |
f43df819 MW |
1921 | for (c = acmdtab; c->name; c++) { |
1922 | if (c->help) | |
1923 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
1924 | else | |
1925 | a_info(a, "%s", c->name, A_END); | |
1926 | } | |
3cdc3f3a | 1927 | a_ok(a); |
410c8acf | 1928 | } |
1929 | ||
1930 | /*----- Connection handling -----------------------------------------------*/ | |
1931 | ||
c511e1f9 | 1932 | /* --- @a_destroypending@ --- * |
410c8acf | 1933 | * |
c511e1f9 | 1934 | * Arguments: --- |
fd3cf232 | 1935 | * |
1936 | * Returns: --- | |
1937 | * | |
c511e1f9 | 1938 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 1939 | */ |
1940 | ||
c511e1f9 | 1941 | static void a_destroypending(void) |
410c8acf | 1942 | { |
c511e1f9 | 1943 | admin *a, *aa; |
de014da6 | 1944 | admin_bgop *bg, *bbg; |
be6a1b7a | 1945 | admin_service *svc, *ssvc; |
de014da6 | 1946 | |
c511e1f9 | 1947 | /* --- Destroy connections marked as pending --- */ |
fd3cf232 | 1948 | |
c511e1f9 MW |
1949 | for (a = a_dead; a; a = aa) { |
1950 | aa = a->next; | |
1951 | assert(a->f & AF_DEAD); | |
1952 | ||
1953 | /* --- Report what we're doing --- */ | |
1954 | ||
1955 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", | |
1956 | a->seq); ) | |
1957 | ||
1958 | /* --- Abort any background jobs in progress --- */ | |
1959 | ||
1960 | for (bg = a->bg; bg; bg = bbg) { | |
1961 | bbg = bg->next; | |
1962 | bg->cancel(bg); | |
1963 | if (bg->tag) xfree(bg->tag); | |
1964 | xfree(bg); | |
1965 | } | |
1966 | ||
5d46c0f8 | 1967 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a MW |
1968 | |
1969 | for (svc = a->svcs; svc; svc = ssvc) { | |
1970 | ssvc = svc->next; | |
1971 | a_svcrelease(svc); | |
1972 | } | |
5d46c0f8 | 1973 | a_jobtablefinal(&a->j); |
be6a1b7a | 1974 | |
c511e1f9 MW |
1975 | /* --- Close file descriptors and selectory --- */ |
1976 | ||
1977 | selbuf_destroy(&a->b); | |
1978 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
1979 | close(a->w.fd); | |
1980 | if (a_stdin == a) a_stdin = 0; | |
1981 | ||
1982 | /* --- Done --- */ | |
1983 | ||
1984 | DESTROY(a); | |
410c8acf | 1985 | } |
410c8acf | 1986 | |
c511e1f9 | 1987 | /* --- All pending destruction completed --- */ |
060ca767 | 1988 | |
c511e1f9 | 1989 | a_dead = 0; |
060ca767 | 1990 | } |
1991 | ||
fd3cf232 | 1992 | /* --- @a_destroy@ --- * |
1993 | * | |
1994 | * Arguments: @admin *a@ = pointer to an admin block | |
1995 | * | |
1996 | * Returns: --- | |
1997 | * | |
1998 | * Use: Destroys an admin block. This requires a certain amount of | |
1999 | * care. | |
2000 | */ | |
2001 | ||
de014da6 | 2002 | static void freequeue(oqueue *q) |
2003 | { | |
2004 | obuf *o, *oo; | |
2005 | ||
2006 | for (o = q->hd; o; o = oo) { | |
2007 | oo = o->next; | |
2008 | xfree(o); | |
2009 | } | |
2010 | q->hd = q->tl = 0; | |
2011 | } | |
2012 | ||
fd3cf232 | 2013 | static void a_destroy(admin *a) |
2014 | { | |
fd3cf232 | 2015 | if (a->f & AF_DEAD) |
2016 | return; | |
2017 | ||
c511e1f9 MW |
2018 | if (a->next) a->next->prev = a->prev; |
2019 | if (a->prev) a->prev->next = a->next; | |
2020 | else admins = a->next; | |
fd3cf232 | 2021 | |
c511e1f9 | 2022 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 2023 | freequeue(&a->out); |
fd3cf232 | 2024 | |
c511e1f9 MW |
2025 | a->f |= AF_DEAD; |
2026 | a->next = a_dead; | |
2027 | a_dead = a; | |
fd3cf232 | 2028 | |
c511e1f9 | 2029 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2030 | } |
2031 | ||
410c8acf | 2032 | /* --- @a_line@ --- * |
2033 | * | |
2034 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2035 | * @size_t len@ = length of the line |
410c8acf | 2036 | * @void *vp@ = pointer to my admin block |
2037 | * | |
2038 | * Returns: --- | |
2039 | * | |
2040 | * Use: Handles a line of input. | |
2041 | */ | |
2042 | ||
3008eabf | 2043 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2044 | { |
2045 | admin *a = vp; | |
2046 | const acmd *c; | |
3cdc3f3a | 2047 | char *av[16]; |
410c8acf | 2048 | size_t ac; |
2049 | ||
8d0c7a83 | 2050 | TIMER; |
fd3cf232 | 2051 | if (a->f & AF_DEAD) |
2052 | return; | |
410c8acf | 2053 | if (!p) { |
de014da6 | 2054 | if (!a->bg) |
2055 | a_destroy(a); | |
2056 | else { | |
2057 | a->f |= AF_CLOSE; | |
2058 | selbuf_disable(&a->b); | |
2059 | } | |
410c8acf | 2060 | return; |
2061 | } | |
3cdc3f3a | 2062 | ac = str_qsplit(p, av, 16, 0, STRF_QUOTE); |
410c8acf | 2063 | if (!ac) |
2064 | return; | |
410c8acf | 2065 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2066 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2067 | ac--; |
f43df819 MW |
2068 | if (c->argmin > ac || ac > c->argmax) { |
2069 | if (!c->help) | |
2070 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
2071 | else | |
2072 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); | |
c511e1f9 | 2073 | } else |
410c8acf | 2074 | c->func(a, ac, av + 1); |
2075 | return; | |
2076 | } | |
2077 | } | |
f43df819 | 2078 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2079 | } |
2080 | ||
2081 | /* --- @a_create@ --- * | |
2082 | * | |
2083 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2084 | * @unsigned f@ = initial flags to set |
410c8acf | 2085 | * |
2086 | * Returns: --- | |
2087 | * | |
2088 | * Use: Creates a new admin connection. | |
2089 | */ | |
2090 | ||
3cdc3f3a | 2091 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2092 | { |
2093 | admin *a = CREATE(admin); | |
3cdc3f3a | 2094 | |
93bee2c4 | 2095 | T( static unsigned seq = 0; |
2096 | a->seq = seq++; ) | |
410c8acf | 2097 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2098 | a->bg = 0; |
042d5c20 | 2099 | a->ref = 0; |
be6a1b7a | 2100 | a->svcs = 0; |
5d46c0f8 | 2101 | a_jobtableinit(&a->j); |
3cdc3f3a | 2102 | a->f = f; |
de014da6 | 2103 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2104 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2105 | if (fd_out != fd_in) |
fd3cf232 | 2106 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2107 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2108 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2109 | a->out.hd = a->out.tl = 0; |
410c8acf | 2110 | a->next = admins; |
2111 | a->prev = 0; | |
de014da6 | 2112 | if (admins) admins->prev = a; |
410c8acf | 2113 | admins = a; |
2114 | } | |
2115 | ||
2116 | /* --- @a_accept@ --- * | |
2117 | * | |
2118 | * Arguments: @int fd@ = file descriptor to accept | |
2119 | * @unsigned mode@ = what to do | |
2120 | * @void *v@ = uninteresting pointer | |
2121 | * | |
2122 | * Returns: --- | |
2123 | * | |
2124 | * Use: Accepts a new admin connection. | |
2125 | */ | |
2126 | ||
2127 | static void a_accept(int fd, unsigned mode, void *v) | |
2128 | { | |
2129 | int nfd; | |
2130 | struct sockaddr_un sun; | |
2131 | size_t sz = sizeof(sun); | |
2132 | ||
2133 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2134 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2135 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2136 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2137 | return; |
2138 | } | |
3cdc3f3a | 2139 | a_create(nfd, nfd, 0); |
410c8acf | 2140 | } |
2141 | ||
c511e1f9 MW |
2142 | /* --- @a_preselect@ --- * |
2143 | * | |
2144 | * Arguments: --- | |
2145 | * | |
2146 | * Returns: --- | |
2147 | * | |
2148 | * Use: Informs the admin module that we're about to select again, | |
2149 | * and that it should do cleanup things it has delayed until a | |
2150 | * `safe' time. | |
2151 | */ | |
2152 | ||
2153 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2154 | ||
410c8acf | 2155 | /* --- @a_daemon@ --- * |
2156 | * | |
2157 | * Arguments: --- | |
2158 | * | |
2159 | * Returns: --- | |
2160 | * | |
2161 | * Use: Informs the admin module that it's a daemon. | |
2162 | */ | |
2163 | ||
f98df549 | 2164 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2165 | |
2166 | /* --- @a_init@ --- * | |
2167 | * | |
2168 | * Arguments: @const char *name@ = socket name to create | |
2169 | * | |
2170 | * Returns: --- | |
2171 | * | |
2172 | * Use: Creates the admin listening socket. | |
2173 | */ | |
2174 | ||
2175 | void a_init(const char *name) | |
2176 | { | |
2177 | int fd; | |
2178 | int n = 5; | |
2179 | struct sockaddr_un sun; | |
2180 | struct sigaction sa; | |
2181 | size_t sz; | |
2182 | ||
be6a1b7a MW |
2183 | /* --- Create services table --- */ |
2184 | ||
2185 | sym_create(&a_svcs); | |
2186 | ||
410c8acf | 2187 | /* --- Set up the socket address --- */ |
2188 | ||
2189 | sz = strlen(name) + 1; | |
2190 | if (sz > sizeof(sun.sun_path)) | |
2191 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
2192 | BURN(sun); | |
2193 | sun.sun_family = AF_UNIX; | |
2194 | memcpy(sun.sun_path, name, sz); | |
2195 | sz += offsetof(struct sockaddr_un, sun_path); | |
2196 | ||
2197 | /* --- Attempt to bind to the socket --- */ | |
2198 | ||
2199 | umask(0077); | |
2200 | again: | |
2201 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
2202 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
2203 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
2204 | struct stat st; | |
2205 | int e = errno; | |
2206 | if (errno != EADDRINUSE) { | |
2207 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
2208 | sun.sun_path, strerror(e)); | |
2209 | } | |
2210 | if (!n) | |
2211 | die(EXIT_FAILURE, "too many retries; giving up"); | |
2212 | n--; | |
2213 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
2214 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
2215 | sun.sun_path); | |
2216 | } | |
2217 | if (errno != ECONNREFUSED) | |
2218 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
2219 | if (stat(sun.sun_path, &st)) { | |
2220 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
2221 | sun.sun_path, strerror(errno)); | |
2222 | } | |
2223 | if (!S_ISSOCK(st.st_mode)) | |
2224 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 2225 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2226 | unlink(sun.sun_path); |
2227 | close(fd); | |
2228 | goto again; | |
2229 | } | |
2230 | chmod(sun.sun_path, 0600); | |
2231 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
2232 | if (listen(fd, 5)) | |
2233 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
2234 | ||
2235 | /* --- Listen to the socket --- */ | |
2236 | ||
2237 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2238 | sel_addfile(&sock); | |
2239 | sockname = name; | |
2240 | bres_init(&sel); | |
2241 | T( trace_custom(a_trace, 0); | |
2242 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2243 | flags |= F_INIT; | |
2244 | ||
2245 | /* --- Set up signal handlers --- */ | |
2246 | ||
2247 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2248 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 2249 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 2250 | sigaction(SIGINT, 0, &sa); |
2251 | if (sa.sa_handler != SIG_IGN) | |
2252 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2253 | } | |
2254 | ||
2255 | /*----- That's all, folks -------------------------------------------------*/ |