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 | * | |
7f73baaf MW |
241 | * Use: Main message token formatting driver. The arguments are |
242 | * interleaved formatting tokens and their parameters, finally | |
243 | * terminated by an entry @A_END@. | |
244 | * | |
245 | * Tokens recognized: | |
246 | * | |
247 | * * "*..." ... -- pretokenized @dstr_putf@-like string | |
248 | * | |
249 | * * "?ADDR" SOCKADDR -- a socket address, to be converted | |
250 | * | |
251 | * * "?B64" BUFFER SIZE -- binary data to be base64-encoded | |
252 | * | |
253 | * * "?TOKENS" VECTOR -- null-terminated vector of tokens | |
254 | * | |
255 | * * "?PEER" PEER -- peer's name | |
256 | * | |
257 | * * "?ERRNO" ERRNO -- system error code | |
258 | * | |
259 | * * "[!]..." ... -- @dstr_putf@-like string as single token | |
f43df819 MW |
260 | */ |
261 | ||
7f73baaf | 262 | void a_vformat(dstr *d, const char *fmt, va_list ap) |
f43df819 MW |
263 | { |
264 | dstr dd = DSTR_INIT; | |
265 | ||
266 | while (fmt) { | |
267 | if (*fmt == '*') { | |
268 | dstr_putc(d, ' '); | |
269 | dstr_vputf(d, fmt + 1, &ap); | |
270 | } else if (*fmt == '?') { | |
271 | if (strcmp(fmt, "?ADDR") == 0) { | |
272 | const addr *a = va_arg(ap, const addr *); | |
273 | switch (a->sa.sa_family) { | |
274 | case AF_INET: | |
0ed0735f MW |
275 | u_quotify(d, "INET"); |
276 | u_quotify(d, inet_ntoa(a->sin.sin_addr)); | |
f43df819 MW |
277 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); |
278 | break; | |
279 | default: | |
280 | abort(); | |
281 | } | |
282 | } else if (strcmp(fmt, "?B64") == 0) { | |
283 | const octet *p = va_arg(ap, const octet *); | |
284 | size_t n = va_arg(ap, size_t); | |
285 | base64_ctx b64; | |
286 | dstr_putc(d, ' '); | |
287 | base64_init(&b64); | |
288 | b64.indent = ""; | |
289 | b64.maxline = 0; | |
290 | base64_encode(&b64, p, n, d); | |
291 | base64_encode(&b64, 0, 0, d); | |
292 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
3331936b MW |
293 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
294 | const char *const *av = va_arg(ap, const char *const *); | |
0ed0735f | 295 | while (*av) u_quotify(d, *av++); |
f43df819 | 296 | } else if (strcmp(fmt, "?PEER") == 0) |
0ed0735f | 297 | u_quotify(d, p_name(va_arg(ap, peer *))); |
f43df819 MW |
298 | else if (strcmp(fmt, "?ERRNO") == 0) { |
299 | dstr_putf(d, " E%d", errno); | |
0ed0735f | 300 | u_quotify(d, strerror(errno)); |
f43df819 MW |
301 | } else |
302 | abort(); | |
303 | } else { | |
304 | if (*fmt == '!') fmt++; | |
305 | DRESET(&dd); | |
306 | dstr_vputf(&dd, fmt, &ap); | |
0ed0735f | 307 | u_quotify(d, dd.buf); |
f43df819 MW |
308 | } |
309 | fmt = va_arg(ap, const char *); | |
310 | } | |
311 | ||
312 | dstr_destroy(&dd); | |
313 | } | |
314 | ||
3cdc3f3a | 315 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 316 | * |
317 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 318 | * @const char *status@ = status code to report |
319 | * @const char *tag@ = tag string, or null | |
410c8acf | 320 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 321 | * @va_list ap@ = arguments in list |
410c8acf | 322 | * @...@ = other arguments |
323 | * | |
324 | * Returns: --- | |
325 | * | |
326 | * Use: Sends a message to an admin connection. | |
327 | */ | |
328 | ||
de014da6 | 329 | static void a_vwrite(admin *a, const char *status, const char *tag, |
330 | const char *fmt, va_list ap) | |
410c8acf | 331 | { |
410c8acf | 332 | dstr d = DSTR_INIT; |
f98df549 | 333 | |
de014da6 | 334 | if (tag) dstr_puts(&d, "BG"); |
335 | dstr_puts(&d, status); | |
0ed0735f | 336 | if (tag) u_quotify(&d, tag); |
f43df819 | 337 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 338 | dstr_putc(&d, '\n'); |
339 | dosend(a, d.buf, d.len); | |
340 | dstr_destroy(&d); | |
341 | } | |
342 | ||
de014da6 | 343 | static void a_write(admin *a, const char *status, const char *tag, |
344 | const char *fmt, ...) | |
3cdc3f3a | 345 | { |
346 | va_list ap; | |
f98df549 | 347 | |
410c8acf | 348 | va_start(ap, fmt); |
de014da6 | 349 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 350 | va_end(ap); |
3cdc3f3a | 351 | } |
352 | ||
353 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
354 | * | |
355 | * Arguments: @admin *a@ = connection | |
356 | * @const char *fmt@ = format string | |
357 | * @...@ = other arguments | |
358 | * | |
359 | * Returns: --- | |
360 | * | |
361 | * Use: Convenience functions for @a_write@. | |
362 | */ | |
363 | ||
f43df819 | 364 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 365 | |
366 | static void a_info(admin *a, const char *fmt, ...) | |
367 | { | |
368 | va_list ap; | |
f98df549 | 369 | |
3cdc3f3a | 370 | va_start(ap, fmt); |
de014da6 | 371 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 372 | va_end(ap); |
373 | } | |
374 | ||
375 | static void a_fail(admin *a, const char *fmt, ...) | |
376 | { | |
377 | va_list ap; | |
f98df549 | 378 | |
3cdc3f3a | 379 | va_start(ap, fmt); |
de014da6 | 380 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 381 | va_end(ap); |
382 | } | |
383 | ||
384 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
385 | * | |
386 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 387 | * @const char *status@ = status string |
3cdc3f3a | 388 | * @const char *fmt@ = pointer to format string |
de014da6 | 389 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 390 | * @size_t sz@ = size of raw string |
391 | * @va_list ap@ = arguments in list | |
392 | * @...@ = other arguments | |
393 | * | |
394 | * Returns: --- | |
395 | * | |
396 | * Use: Write a message to all admin connections matched by the given | |
397 | * filter. | |
398 | */ | |
399 | ||
de014da6 | 400 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 401 | const char *p, size_t sz) |
402 | { | |
403 | admin *a, *aa; | |
404 | dstr d = DSTR_INIT; | |
e04c2d50 | 405 | |
3cdc3f3a | 406 | if (!(flags & F_INIT)) |
407 | return; | |
de014da6 | 408 | dstr_puts(&d, status); |
409 | if (p) { | |
410 | dstr_putc(&d, ' '); | |
3cdc3f3a | 411 | dstr_putm(&d, p, sz); |
de014da6 | 412 | } |
3cdc3f3a | 413 | dstr_putc(&d, '\n'); |
414 | p = d.buf; | |
415 | sz = d.len; | |
416 | for (a = admins; a; a = aa) { | |
417 | aa = a->next; | |
418 | if ((a->f & f_and) == f_eq) | |
419 | dosend(a, d.buf, d.len); | |
420 | } | |
410c8acf | 421 | dstr_destroy(&d); |
422 | } | |
423 | ||
b9adb829 | 424 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 425 | const char *fmt, va_list ap) |
426 | { | |
427 | dstr d = DSTR_INIT; | |
428 | ||
429 | if (!(flags & F_INIT)) | |
430 | return; | |
f43df819 | 431 | a_vformat(&d, fmt, ap); |
b9adb829 | 432 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 433 | dstr_destroy(&d); |
434 | } | |
435 | ||
b9adb829 | 436 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 437 | const char *fmt, ...) |
438 | { | |
439 | va_list ap; | |
f98df549 | 440 | |
3cdc3f3a | 441 | va_start(ap, fmt); |
b9adb829 | 442 | a_valert(f_and, f_eq, status, fmt, ap); |
3cdc3f3a | 443 | va_end(ap); |
444 | } | |
3cdc3f3a | 445 | |
410c8acf | 446 | /* --- @a_warn@ --- * |
447 | * | |
448 | * Arguments: @const char *fmt@ = pointer to format string | |
449 | * @...@ = other arguments | |
450 | * | |
451 | * Returns: --- | |
452 | * | |
453 | * Use: Informs all admin connections of a warning. | |
454 | */ | |
455 | ||
456 | void a_warn(const char *fmt, ...) | |
457 | { | |
458 | va_list ap; | |
410c8acf | 459 | |
410c8acf | 460 | va_start(ap, fmt); |
3cdc3f3a | 461 | if (flags & F_INIT) |
462 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 463 | else { |
f43df819 | 464 | dstr d = DSTR_INIT; |
3cdc3f3a | 465 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
466 | a_vformat(&d, fmt, ap); |
467 | dstr_putc(&d, '\n'); | |
468 | dstr_write(&d, stderr); | |
469 | dstr_destroy(&d); | |
410c8acf | 470 | } |
3cdc3f3a | 471 | va_end(ap); |
410c8acf | 472 | } |
473 | ||
474 | /* --- @a_trace@ --- * | |
475 | * | |
476 | * Arguments: @const char *p@ = pointer to a buffer | |
477 | * @size_t sz@ = size of the buffer | |
478 | * @void *v@ = uninteresting pointer | |
479 | * | |
480 | * Returns: --- | |
481 | * | |
3cdc3f3a | 482 | * Use: Custom trace output handler. Sends trace messages to |
483 | * interested admin connections. | |
410c8acf | 484 | */ |
485 | ||
486 | #ifndef NTRACE | |
487 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 488 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 489 | #endif |
490 | ||
3cdc3f3a | 491 | /* --- @a_notify@ --- * |
492 | * | |
493 | * Arguments: @const char *fmt@ = pointer to format string | |
494 | * @...@ = other arguments | |
495 | * | |
496 | * Returns: --- | |
497 | * | |
498 | * Use: Sends a notification to interested admin connections. | |
499 | */ | |
500 | ||
501 | void a_notify(const char *fmt, ...) | |
502 | { | |
503 | va_list ap; | |
504 | ||
505 | va_start(ap, fmt); | |
506 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
507 | va_end(ap); | |
508 | } | |
509 | ||
410c8acf | 510 | /* --- @a_quit@ --- * |
511 | * | |
512 | * Arguments: --- | |
513 | * | |
514 | * Returns: --- | |
515 | * | |
516 | * Use: Shuts things down nicely. | |
517 | */ | |
518 | ||
519 | void a_quit(void) | |
520 | { | |
521 | close(sock.fd); | |
522 | unlink(sockname); | |
c8e02c8a | 523 | FOREACH_PEER(p, { p_destroy(p); }); |
410c8acf | 524 | exit(0); |
525 | } | |
526 | ||
527 | /* --- @a_sigdie@ --- * | |
528 | * | |
529 | * Arguments: @int sig@ = signal number | |
530 | * @void *v@ = an uninteresting argument | |
531 | * | |
532 | * Returns: --- | |
533 | * | |
534 | * Use Shuts down on receipt of a fatal signal. | |
535 | */ | |
536 | ||
537 | static void a_sigdie(int sig, void *v) | |
538 | { | |
539 | char *p; | |
540 | char buf[20]; | |
541 | ||
542 | switch (sig) { | |
543 | case SIGTERM: p = "SIGTERM"; break; | |
544 | case SIGINT: p = "SIGINT"; break; | |
545 | default: | |
3cdc3f3a | 546 | sprintf(buf, "%i", sig); |
410c8acf | 547 | p = buf; |
548 | break; | |
549 | } | |
f43df819 | 550 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 551 | a_quit(); |
552 | } | |
553 | ||
554 | /* --- @a_sighup@ --- * | |
555 | * | |
556 | * Arguments: @int sig@ = signal number | |
557 | * @void *v@ = an uninteresting argument | |
558 | * | |
559 | * Returns: --- | |
560 | * | |
561 | * Use Logs a message about SIGHUP not being useful. | |
562 | */ | |
563 | ||
564 | static void a_sighup(int sig, void *v) | |
f98df549 | 565 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 566 | |
0ba8de86 | 567 | /* --- @a_parsetime@ --- * |
568 | * | |
569 | * Arguments; @const char *p@ = time string to parse | |
570 | * | |
571 | * Returns: Time in seconds, or @< 0@ on error. | |
572 | */ | |
573 | ||
574 | static long a_parsetime(const char *p) | |
575 | { | |
576 | char *q; | |
577 | long t = strtol(p, &q, 0); | |
578 | ||
579 | switch (*q) { | |
580 | case 'd': t *= 24; | |
581 | case 'h': t *= 60; | |
582 | case 'm': t *= 60; | |
583 | case 's': if (q[1] != 0) | |
e04c2d50 | 584 | default: t = -1; |
0ba8de86 | 585 | case 0: break; |
586 | } | |
e04c2d50 | 587 | return (t); |
0ba8de86 | 588 | } |
589 | ||
37941236 | 590 | /* --- @a_findpeer@ --- * |
591 | * | |
592 | * Arguments: @admin *a@ = admin connection | |
593 | * @const char *pn@ = peer name | |
594 | * | |
595 | * Returns: The peer, or null if not there. | |
596 | * | |
597 | * Use: Finds a peer, reporting an error if it failed. | |
598 | */ | |
599 | ||
600 | static peer *a_findpeer(admin *a, const char *pn) | |
601 | { | |
602 | peer *p; | |
603 | ||
604 | if ((p = p_find(pn)) == 0) | |
f43df819 | 605 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 606 | return (p); |
607 | } | |
608 | ||
de014da6 | 609 | /*----- Backgrounded operations -------------------------------------------*/ |
610 | ||
060ca767 | 611 | #define BGTAG(bg) \ |
612 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
613 | ||
ff92ffd3 MW |
614 | /* --- @a_bgfind@ --- * |
615 | * | |
616 | * Arguments: @admin *a@ = a client block | |
617 | * @const char *tag@ = the requested tag | |
618 | * | |
619 | * Returns: The requested background job, or null. | |
620 | */ | |
621 | ||
622 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
623 | { | |
624 | admin_bgop *bg; | |
625 | ||
626 | for (bg = a->bg; bg; bg = bg->next) { | |
627 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
628 | return (bg); | |
629 | } | |
630 | return (0); | |
631 | } | |
632 | ||
de014da6 | 633 | /* --- @a_bgrelease@ --- * |
634 | * | |
635 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
636 | * | |
637 | * Returns: --- | |
638 | * | |
639 | * Use: Removes a backgrounded operation from the queue, since | |
640 | * (presumably) it's done. | |
641 | */ | |
642 | ||
643 | static void a_bgrelease(admin_bgop *bg) | |
644 | { | |
645 | admin *a = bg->a; | |
646 | ||
060ca767 | 647 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
648 | if (bg->tag) xfree(bg->tag); | |
649 | else selbuf_enable(&a->b); | |
650 | if (bg->next) bg->next->prev = bg->prev; | |
651 | if (bg->prev) bg->prev->next = bg->next; | |
652 | else a->bg = bg->next; | |
de014da6 | 653 | xfree(bg); |
547a9c13 | 654 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 655 | } |
656 | ||
657 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
658 | * | |
659 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
660 | * @const char *fmt@ = format string | |
661 | * @...@ = other arguments | |
662 | * | |
663 | * Returns: --- | |
664 | * | |
665 | * Use: Convenience functions for @a_write@. | |
666 | */ | |
667 | ||
668 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 669 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 670 | |
671 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
672 | { | |
673 | va_list ap; | |
674 | va_start(ap, fmt); | |
675 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
676 | va_end(ap); | |
677 | } | |
678 | ||
679 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
680 | { | |
681 | va_list ap; | |
682 | va_start(ap, fmt); | |
683 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
684 | va_end(ap); | |
685 | } | |
686 | ||
687 | /* --- @a_bgadd@ --- * | |
688 | * | |
689 | * Arguments: @admin *a@ = administration connection | |
690 | * @admin_bgop *bg@ = pointer to background operation | |
691 | * @const char *tag@ = background tag, or null for foreground | |
692 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
693 | * | |
ff92ffd3 | 694 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 695 | * |
696 | * Use: Links a background job into the list. | |
697 | */ | |
698 | ||
ff92ffd3 MW |
699 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
700 | void (*cancel)(admin_bgop *)) | |
de014da6 | 701 | { |
ff92ffd3 MW |
702 | if (tag) { |
703 | if (a_bgfind(a, tag)) { | |
704 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
705 | return (-1); | |
706 | } | |
de014da6 | 707 | bg->tag = xstrdup(tag); |
ff92ffd3 | 708 | } |
de014da6 | 709 | else { |
710 | bg->tag = 0; | |
711 | selbuf_disable(&a->b); | |
712 | } | |
713 | bg->a = a; | |
714 | bg->cancel = cancel; | |
715 | bg->next = a->bg; | |
716 | bg->prev = 0; | |
060ca767 | 717 | if (a->bg) a->bg->prev = bg; |
de014da6 | 718 | a->bg = bg; |
060ca767 | 719 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 720 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 721 | return (0); |
de014da6 | 722 | } |
723 | ||
5d46c0f8 MW |
724 | /*----- Job table manipulation --------------------------------------------*/ |
725 | ||
726 | #define JOB_SHIFT 16 | |
727 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
728 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
729 | ||
730 | #define JOB_END 0xfffffffful | |
731 | ||
732 | static unsigned long a_joboffset; | |
733 | ||
734 | /* --- @a_jobidencode@ --- * | |
735 | * | |
736 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
737 | * | |
738 | * Returns: A jobid for this job, in an internal static buffer. | |
739 | * | |
740 | * Use: Constructs a jobid. In order to dissuade people from | |
741 | * predicting jobids, we obfuscate them. | |
742 | * | |
743 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
744 | * are an index into a big array. The high 16 bits are a | |
745 | * sequence number recording how many times that slot has been | |
746 | * reused. | |
747 | * | |
748 | * This `raw' jobid is then obfuscated by adding a randomly- | |
749 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
750 | * odd constant. | |
751 | */ | |
752 | ||
753 | static const char *a_jobidencode(admin_svcop *svc) | |
754 | { | |
755 | admin_jobtable *j = &svc->prov->j; | |
756 | static char buf[10]; | |
757 | unsigned long pre; | |
758 | unsigned seq; | |
759 | ||
760 | assert(svc->index <= JOB_INDEXMASK); | |
761 | seq = j->v[svc->index].seq; | |
762 | assert(seq <= JOB_SEQMASK); | |
763 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
764 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
765 | return (buf); | |
766 | } | |
767 | ||
768 | /* --- @a_jobiddecode@ --- * | |
769 | * | |
770 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
771 | * @const char *jid@ = pointer to a jobid string | |
772 | * | |
773 | * Returns: A pointer to the job's @svcop@ structure. | |
774 | */ | |
775 | ||
776 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
777 | { | |
778 | unsigned i; | |
779 | unsigned long pre; | |
780 | ||
781 | if (jid[0] != 'J') | |
782 | return (0); | |
783 | for (i = 1; i < 9; i++) { | |
784 | if (!isxdigit((unsigned char)jid[i])) | |
785 | return (0); | |
786 | } | |
787 | if (jid[9] != 0) | |
788 | return (0); | |
789 | pre = strtoul(jid + 1, 0, 16); | |
790 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
791 | i = pre & JOB_INDEXMASK; | |
792 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
793 | return (0); | |
794 | return (j->v[i].u.op); | |
795 | } | |
796 | ||
797 | /* --- @a_jobcreate@ --- * | |
798 | * | |
799 | * Arguments: @admin *a@ = pointer to administration client | |
800 | * | |
801 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
802 | * | |
803 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
804 | */ | |
805 | ||
806 | static admin_svcop *a_jobcreate(admin *a) | |
807 | { | |
808 | admin_svcop *svc; | |
809 | unsigned i; | |
810 | unsigned sz; | |
811 | admin_jobtable *j = &a->j; | |
812 | ||
813 | if (j->free != JOB_END) { | |
814 | i = j->free; | |
815 | j->free = j->v[i].u.next; | |
816 | } else { | |
817 | if (j->n == j->sz) { | |
818 | if (j->sz > JOB_INDEXMASK) | |
819 | return (0); | |
820 | sz = j->sz; | |
821 | if (!sz) { | |
822 | j->sz = 16; | |
823 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
824 | } else { | |
825 | j->sz = sz << 1; | |
826 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
827 | } | |
828 | } | |
829 | i = j->n++; | |
830 | j->v[i].seq = 0; | |
831 | } | |
832 | svc = xmalloc(sizeof(*svc)); | |
833 | svc->index = i; | |
834 | svc->prov = a; | |
835 | svc->next = j->active; | |
836 | svc->prev = 0; | |
837 | if (j->active) j->active->prev = svc; | |
838 | j->active = svc; | |
839 | j->v[i].u.op = svc; | |
840 | IF_TRACING(T_ADMIN, { | |
841 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
842 | }) | |
843 | return (svc); | |
844 | } | |
845 | ||
846 | /* --- @a_jobdestroy@ --- * | |
847 | * | |
848 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
849 | * | |
850 | * Returns: --- | |
851 | * | |
852 | * Use: Frees up a completed (or cancelled) job. | |
853 | */ | |
854 | ||
855 | static void a_jobdestroy(admin_svcop *svc) | |
856 | { | |
857 | admin *a = svc->prov; | |
858 | admin_jobtable *j = &a->j; | |
859 | unsigned i = svc->index; | |
860 | ||
861 | IF_TRACING(T_ADMIN, { | |
862 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
863 | }) | |
864 | assert(j->v[i].u.op = svc); | |
865 | j->v[i].u.next = j->free; | |
866 | j->v[i].seq++; | |
867 | j->free = i; | |
868 | if (svc->next) svc->next->prev = svc->prev; | |
869 | if (svc->prev) svc->prev->next = svc->next; | |
870 | else j->active = svc->next; | |
871 | } | |
872 | ||
873 | /* --- @a_jobtableinit@ --- * | |
874 | * | |
875 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
876 | * | |
877 | * Returns: --- | |
878 | * | |
879 | * Use: Initializes a job table. | |
880 | */ | |
881 | ||
882 | static void a_jobtableinit(admin_jobtable *j) | |
883 | { | |
884 | if (!a_joboffset) | |
885 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
886 | j->n = j->sz = 0; | |
887 | j->active = 0; | |
888 | j->free = JOB_END; | |
889 | j->v = 0; | |
890 | } | |
891 | ||
892 | /* --- @a_jobtablefinal@ --- * | |
893 | * | |
894 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
895 | * | |
896 | * Returns: --- | |
897 | * | |
898 | * Use: Closes down a job table. | |
899 | */ | |
900 | ||
901 | static void a_jobtablefinal(admin_jobtable *j) | |
902 | { | |
903 | admin_svcop *svc, *ssvc; | |
904 | ||
905 | for (svc = j->active; svc; svc = ssvc) { | |
906 | ssvc = svc->next; | |
907 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
908 | a_bgrelease(&svc->bg); | |
909 | } | |
910 | if (j->v) xfree(j->v); | |
911 | } | |
912 | ||
be6a1b7a MW |
913 | /*----- Services infrastructure -------------------------------------------*/ |
914 | ||
915 | /* --- @a_svcfind@ --- * | |
916 | * | |
917 | * Arguments: @admin *a@ = the requesting client | |
918 | * @const char *name@ = service name wanted | |
919 | * | |
920 | * Returns: The service requested, or null. | |
921 | * | |
922 | * Use: Finds a service; reports an error if the service couldn't be | |
923 | * found. | |
924 | */ | |
925 | ||
926 | static admin_service *a_svcfind(admin *a, const char *name) | |
927 | { | |
928 | admin_service *svc; | |
929 | ||
930 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
931 | a_fail(a, "unknown-service", "%s", name, A_END); | |
932 | return (0); | |
933 | } | |
934 | return (svc); | |
935 | } | |
936 | ||
937 | /* --- @a_svcunlink@ --- * | |
938 | * | |
939 | * Arguments: @admin_service *svc@ = pointer to service structure | |
940 | * | |
941 | * Returns: --- | |
942 | * | |
943 | * Use: Unlinks the service from its provider, without issuing a | |
944 | * message or freeing the structure. The version string is | |
945 | * freed, however. | |
946 | */ | |
947 | ||
948 | static void a_svcunlink(admin_service *svc) | |
949 | { | |
950 | if (svc->next) | |
951 | svc->next->prev = svc->prev; | |
952 | if (svc->prev) | |
953 | svc->prev->next = svc->next; | |
954 | else | |
955 | svc->prov->svcs = svc->next; | |
956 | xfree(svc->version); | |
957 | } | |
958 | ||
959 | /* --- @a_svcrelease@ --- * | |
960 | * | |
961 | * Arguments: @admin_service *svc@ = pointer to service structure | |
962 | * | |
963 | * Returns: --- | |
964 | * | |
965 | * Use: Releases a service and frees its structure. | |
966 | */ | |
967 | ||
968 | static void a_svcrelease(admin_service *svc) | |
969 | { | |
970 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
971 | a_svcunlink(svc); | |
972 | sym_remove(&a_svcs, svc); | |
de014da6 | 973 | } |
974 | ||
37941236 | 975 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 976 | |
37941236 | 977 | /* --- @a_resolved@ --- * |
de014da6 | 978 | * |
37941236 | 979 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
980 | * @void *v@ = pointer to resolver operation | |
de014da6 | 981 | * |
982 | * Returns: --- | |
983 | * | |
37941236 | 984 | * Use: Handles a completed name resolution. |
de014da6 | 985 | */ |
986 | ||
37941236 | 987 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 988 | { |
37941236 | 989 | admin_resop *r = v; |
990 | ||
991 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
992 | TIMER; | |
993 | if (!h) { | |
f43df819 | 994 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 995 | r->func(r, ARES_FAIL); |
996 | } else { | |
997 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
998 | r->func(r, ARES_OK); | |
999 | } | |
1000 | sel_rmtimer(&r->t); | |
1001 | xfree(r->addr); | |
1002 | a_bgrelease(&r->bg); | |
e04c2d50 | 1003 | } |
de014da6 | 1004 | |
37941236 | 1005 | /* --- @a_restimer@ --- * |
de014da6 | 1006 | * |
37941236 | 1007 | * Arguments: @struct timeval *tv@ = timer |
1008 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1009 | * |
1010 | * Returns: --- | |
1011 | * | |
37941236 | 1012 | * Use: Times out a resolver. |
de014da6 | 1013 | */ |
1014 | ||
37941236 | 1015 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 1016 | { |
37941236 | 1017 | admin_resop *r = v; |
1018 | ||
1019 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1020 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1021 | r->func(r, ARES_FAIL); |
1022 | bres_abort(&r->r); | |
1023 | xfree(r->addr); | |
1024 | a_bgrelease(&r->bg); | |
de014da6 | 1025 | } |
1026 | ||
37941236 | 1027 | /* --- @a_rescancel@ --- * |
de014da6 | 1028 | * |
37941236 | 1029 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1030 | * |
1031 | * Returns: --- | |
1032 | * | |
37941236 | 1033 | * Use: Cancels an add operation. |
de014da6 | 1034 | */ |
1035 | ||
37941236 | 1036 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1037 | { |
37941236 | 1038 | admin_resop *r = (admin_resop *)bg; |
1039 | ||
1040 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1041 | r->func(r, ARES_FAIL); | |
1042 | sel_rmtimer(&r->t); | |
1043 | xfree(r->addr); | |
1044 | bres_abort(&r->r); | |
de014da6 | 1045 | } |
37941236 | 1046 | |
1047 | /* --- @a_resolve@ --- * | |
410c8acf | 1048 | * |
37941236 | 1049 | * Arguments: @admin *a@ = administration connection |
1050 | * @admin_resop *r@ = resolver operation to run | |
1051 | * @const char *tag@ = background operation tag | |
1052 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1053 | * @unsigned ac@ = number of remaining arguments | |
1054 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1055 | * |
1056 | * Returns: --- | |
1057 | * | |
37941236 | 1058 | * Use: Cranks up a resolver job. |
410c8acf | 1059 | */ |
1060 | ||
37941236 | 1061 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1062 | void (*func)(struct admin_resop *, int), | |
1063 | unsigned ac, char *av[]) | |
410c8acf | 1064 | { |
37941236 | 1065 | struct timeval tv; |
1066 | unsigned long pt; | |
1067 | char *p; | |
1068 | int i = 0; | |
fd3cf232 | 1069 | |
37941236 | 1070 | /* --- Fill in the easy bits of address --- */ |
1071 | ||
452bf3f6 | 1072 | r->bg.tag = "<starting>"; |
37941236 | 1073 | r->addr = 0; |
1074 | r->func = func; | |
1075 | if (mystrieq(av[i], "inet")) i++; | |
165efde7 MW |
1076 | if (ac - i != 1 && ac - i != 2) { |
1077 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS [PORT]", A_END); | |
37941236 | 1078 | goto fail; |
1079 | } | |
1080 | r->sa.sin.sin_family = AF_INET; | |
1081 | r->sasz = sizeof(r->sa.sin); | |
1082 | r->addr = xstrdup(av[i]); | |
6f88042a | 1083 | if (!av[i + 1]) |
165efde7 MW |
1084 | pt = TRIPE_PORT; |
1085 | else { | |
1086 | pt = strtoul(av[i + 1], &p, 0); | |
1087 | if (*p) { | |
1088 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1089 | if (!s) { | |
1090 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); | |
1091 | goto fail; | |
1092 | } | |
1093 | pt = ntohs(s->s_port); | |
37941236 | 1094 | } |
410c8acf | 1095 | } |
37941236 | 1096 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1097 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1098 | goto fail; |
1099 | } | |
1100 | r->sa.sin.sin_port = htons(pt); | |
1101 | ||
1102 | /* --- Report backgrounding --- * | |
1103 | * | |
1104 | * Do this for consistency of interface, even if we're going to get the | |
1105 | * answer straight away. | |
1106 | */ | |
1107 | ||
ff92ffd3 MW |
1108 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1109 | goto fail; | |
37941236 | 1110 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
1111 | a->seq, BGTAG(r), r->addr); ) | |
1112 | ||
1113 | /* --- If the name is numeric, do it the easy way --- */ | |
e04c2d50 | 1114 | |
37941236 | 1115 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { |
1116 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1117 | func(r, ARES_OK); | |
1118 | xfree(r->addr); | |
1119 | a_bgrelease(&r->bg); | |
1120 | return; | |
1121 | } | |
1122 | ||
1123 | /* --- Store everything for later and crank up the resolver --- */ | |
1124 | ||
1125 | gettimeofday(&tv, 0); | |
1126 | tv.tv_sec += T_RESOLVE; | |
1127 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
1128 | bres_byname(&r->r, r->addr, a_resolved, r); | |
1129 | return; | |
1130 | ||
1131 | fail: | |
1132 | func(r, ARES_FAIL); | |
1133 | if (r->addr) xfree(r->addr); | |
1134 | xfree(r); | |
410c8acf | 1135 | } |
1136 | ||
e7a4d919 MW |
1137 | /*----- Option parsing ----------------------------------------------------*/ |
1138 | ||
1139 | #define OPTIONS(argc, argv, guts) do { \ | |
1140 | char **o_av = argv; \ | |
1141 | for (;; o_av++) { \ | |
1142 | if (!*o_av) \ | |
1143 | break; \ | |
1144 | if (mystrieq(*o_av, "--")) { \ | |
1145 | o_av++; \ | |
1146 | break; \ | |
1147 | } \ | |
1148 | guts \ | |
1149 | if (**o_av == '-') \ | |
1150 | goto bad_syntax; \ | |
1151 | break; \ | |
1152 | } \ | |
1153 | argc -= o_av - argv; \ | |
1154 | argv = o_av; \ | |
1155 | } while (0) | |
1156 | ||
1157 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1158 | ||
1159 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1160 | const char *arg; \ | |
1161 | arg = *++o_av; \ | |
1162 | if (!arg) goto bad_syntax; \ | |
1163 | guts \ | |
1164 | }) | |
1165 | ||
1166 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1167 | long arg; \ | |
1168 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1169 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1170 | goto fail; \ | |
1171 | } \ | |
1172 | guts \ | |
1173 | }) | |
1174 | ||
37941236 | 1175 | /*----- Adding peers ------------------------------------------------------*/ |
1176 | ||
1177 | /* --- @a_doadd@ --- * | |
410c8acf | 1178 | * |
37941236 | 1179 | * Arguments: @admin_resop *r@ = resolver operation |
1180 | * @int rc@ = how it worked | |
410c8acf | 1181 | * |
1182 | * Returns: --- | |
1183 | * | |
37941236 | 1184 | * Use: Handles a completed resolution. |
410c8acf | 1185 | */ |
1186 | ||
37941236 | 1187 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1188 | { |
37941236 | 1189 | admin_addop *add = (admin_addop *)r; |
1190 | ||
1191 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1192 | ||
1193 | if (rc == ARES_OK) { | |
1194 | add->peer.sasz = add->r.sasz; | |
1195 | add->peer.sa = add->r.sa; | |
c8e02c8a MW |
1196 | if (p_findbyaddr(&add->r.sa)) |
1197 | a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END); | |
1198 | else if (p_find(add->peer.name)) | |
f43df819 | 1199 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 1200 | else if (!p_create(&add->peer)) |
f43df819 | 1201 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 1202 | else |
1203 | a_bgok(&add->r.bg); | |
1204 | } | |
de014da6 | 1205 | |
37941236 | 1206 | xfree(add->peer.name); |
410c8acf | 1207 | } |
1208 | ||
1209 | /* --- @acmd_add@ --- * | |
1210 | * | |
1211 | * Arguments: @admin *a@ = connection which requested the addition | |
1212 | * @unsigned ac@ = argument count | |
1213 | * @char *av[]@ = pointer to the argument list | |
1214 | * | |
1215 | * Returns: --- | |
1216 | * | |
1217 | * Use: Adds a new peer. | |
1218 | */ | |
1219 | ||
1220 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
1221 | { | |
de014da6 | 1222 | const char *tag = 0; |
9986f0b5 | 1223 | admin_addop *add; |
410c8acf | 1224 | |
0ba8de86 | 1225 | /* --- Set stuff up --- */ |
1226 | ||
de014da6 | 1227 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 1228 | add->peer.name = 0; |
de014da6 | 1229 | add->peer.t_ka = 0; |
1230 | add->peer.tops = tun_default; | |
010e6f63 | 1231 | add->peer.kxf = 0; |
37941236 | 1232 | |
42da2a58 | 1233 | /* --- Parse options --- */ |
1234 | ||
e7a4d919 MW |
1235 | OPTIONS(ac, av, { |
1236 | OPTARG("-background", arg, { tag = arg; }) | |
1237 | OPTARG("-tunnel", arg, { | |
1238 | unsigned i; | |
1239 | for (i = 0;; i++) { | |
1240 | if (!tunnels[i]) { | |
1241 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 1242 | goto fail; |
42da2a58 | 1243 | } |
e7a4d919 MW |
1244 | if (mystrieq(arg, tunnels[i]->name)) { |
1245 | add->peer.tops = tunnels[i]; | |
42da2a58 | 1246 | break; |
1247 | } | |
1248 | } | |
e7a4d919 MW |
1249 | }) |
1250 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
010e6f63 | 1251 | OPT("-cork", { add->peer.kxf |= KXF_CORK; }) |
e7a4d919 | 1252 | }); |
42da2a58 | 1253 | |
9986f0b5 MW |
1254 | /* --- Make sure someone's not got there already --- */ |
1255 | ||
bcf3764a | 1256 | if (!av[0] || !av[1]) |
9986f0b5 | 1257 | goto bad_syntax; |
e7a4d919 MW |
1258 | if (p_find(*av)) { |
1259 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1260 | goto fail; |
42da2a58 | 1261 | } |
e7a4d919 MW |
1262 | add->peer.name = xstrdup(*av++); |
1263 | ac--; | |
42da2a58 | 1264 | |
37941236 | 1265 | /* --- Crank up the resolver --- */ |
de014da6 | 1266 | |
e7a4d919 | 1267 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1268 | return; |
1269 | ||
37941236 | 1270 | /* --- Clearing up --- */ |
1271 | ||
42da2a58 | 1272 | bad_syntax: |
9986f0b5 | 1273 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1274 | fail: |
9986f0b5 | 1275 | if (add->peer.name) xfree(add->peer.name); |
37941236 | 1276 | xfree(add); |
0ba8de86 | 1277 | return; |
1278 | } | |
1279 | ||
1280 | /*----- Ping --------------------------------------------------------------*/ | |
1281 | ||
de014da6 | 1282 | /* --- @a_pingcancel@ --- * |
1283 | * | |
1284 | * Arguments: @admin_bgop *bg@ = background operation block | |
1285 | * | |
1286 | * Returns: --- | |
1287 | * | |
1288 | * Use: Cancels a running ping. | |
1289 | */ | |
1290 | ||
1291 | static void a_pingcancel(admin_bgop *bg) | |
1292 | { | |
1293 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1294 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1295 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1296 | } | |
1297 | ||
0ba8de86 | 1298 | /* --- @a_pong@ --- * |
1299 | * | |
1300 | * Arguments: @int rc@ = return code | |
de014da6 | 1301 | * @void *v@ = ping operation block |
0ba8de86 | 1302 | * |
1303 | * Returns: --- | |
1304 | * | |
1305 | * Use: Collects what happened to a ping message. | |
1306 | */ | |
1307 | ||
de014da6 | 1308 | static void a_pong(int rc, void *v) |
0ba8de86 | 1309 | { |
de014da6 | 1310 | admin_pingop *pg = v; |
0ba8de86 | 1311 | struct timeval tv; |
1312 | double millis; | |
1313 | ||
0ba8de86 | 1314 | switch (rc) { |
1315 | case PING_OK: | |
1316 | gettimeofday(&tv, 0); | |
de014da6 | 1317 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1318 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1319 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1320 | a_bgok(&pg->bg); |
0ba8de86 | 1321 | break; |
1322 | case PING_TIMEOUT: | |
f43df819 | 1323 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1324 | a_bgok(&pg->bg); |
0ba8de86 | 1325 | break; |
1326 | case PING_PEERDIED: | |
f43df819 | 1327 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1328 | a_bgok(&pg->bg); |
0ba8de86 | 1329 | break; |
1330 | default: | |
1331 | abort(); | |
1332 | } | |
060ca767 | 1333 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1334 | a_bgrelease(&pg->bg); |
0ba8de86 | 1335 | } |
1336 | ||
1337 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1338 | * | |
1339 | * Arguments: @admin *a@ = connection which requested the ping | |
1340 | * @unsigned ac@ = argument count | |
1341 | * @char *av[]@ = pointer to the argument list | |
1342 | * | |
1343 | * Returns: --- | |
1344 | * | |
1345 | * Use: Pings a peer. | |
1346 | */ | |
1347 | ||
1348 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1349 | const char *cmd, unsigned msg) | |
1350 | { | |
1351 | long t = T_PING; | |
0ba8de86 | 1352 | peer *p; |
de014da6 | 1353 | admin_pingop *pg = 0; |
1354 | const char *tag = 0; | |
0ba8de86 | 1355 | |
e7a4d919 MW |
1356 | OPTIONS(ac, av, { |
1357 | OPTARG("-background", arg, { tag = arg; }) | |
1358 | OPTTIME("-timeout", arg, { t = arg; }) | |
1359 | }); | |
1360 | if (!*av || av[1]) goto bad_syntax; | |
1361 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1362 | return; |
de014da6 | 1363 | pg = xmalloc(sizeof(*pg)); |
1364 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1365 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1366 | goto fail; | |
060ca767 | 1367 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1368 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1369 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1370 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1371 | a_bgrelease(&pg->bg); |
1372 | } | |
0ba8de86 | 1373 | return; |
e04c2d50 | 1374 | |
0ba8de86 | 1375 | bad_syntax: |
f43df819 | 1376 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1377 | fail: |
ff92ffd3 | 1378 | if (pg) xfree(pg); |
42da2a58 | 1379 | return; |
410c8acf | 1380 | } |
1381 | ||
0ba8de86 | 1382 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1383 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1384 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1385 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1386 | |
be6a1b7a MW |
1387 | /*----- Service commands --------------------------------------------------*/ |
1388 | ||
1389 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1390 | { | |
1391 | admin_service *svc; | |
1392 | unsigned f; | |
1393 | ||
1394 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1395 | if (f) { | |
1396 | if (versioncmp(av[1], svc->version) <= 0) { | |
1397 | a_fail(a, | |
1398 | "service-exists", | |
1399 | "%s", SYM_NAME(svc), | |
1400 | "%s", svc->version, | |
1401 | A_END); | |
1402 | return; | |
1403 | } | |
1404 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1405 | a_svcunlink(svc); | |
1406 | } | |
1407 | svc->prov = a; | |
1408 | svc->version = xstrdup(av[1]); | |
1409 | svc->next = a->svcs; | |
1410 | svc->prev = 0; | |
1411 | if (a->svcs) a->svcs->prev = svc; | |
1412 | a->svcs = svc; | |
1413 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1414 | a_ok(a); | |
1415 | } | |
1416 | ||
1417 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1418 | { | |
1419 | admin_service *svc; | |
1420 | ||
1421 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1422 | return; | |
1423 | if (svc->prov != a) { | |
1424 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1425 | return; | |
1426 | } | |
1427 | a_svcrelease(svc); | |
1428 | a_ok(a); | |
1429 | } | |
1430 | ||
1431 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1432 | { | |
1433 | admin_service *svc; | |
1434 | ||
1435 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1436 | return; | |
1437 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1438 | a_fail(a, "service-too-old", | |
1439 | "%s", SYM_NAME(svc), | |
1440 | "%s", svc->version, | |
1441 | A_END); | |
1442 | return; | |
1443 | } | |
1444 | a_ok(a); | |
1445 | } | |
1446 | ||
1447 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1448 | { | |
1449 | admin_service *svc; | |
1450 | ||
1451 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1452 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1453 | a_ok(a); | |
1454 | } | |
1455 | } | |
1456 | ||
1457 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1458 | { | |
1459 | admin_service *svc; | |
1460 | sym_iter i; | |
1461 | ||
1462 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1463 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1464 | a_ok(a); | |
1465 | } | |
1466 | ||
ef2f29c9 MW |
1467 | static void a_canceljob(admin_bgop *bg) |
1468 | { | |
1469 | admin_svcop *svc = (admin_svcop *)bg; | |
1470 | ||
1471 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1472 | a_jobdestroy(svc); | |
1473 | } | |
1474 | ||
1475 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1476 | { | |
1477 | const char *tag = 0; | |
1478 | admin_service *svc; | |
1479 | admin_svcop *svcop; | |
1480 | const char *ver = 0; | |
1481 | dstr d = DSTR_INIT; | |
1482 | ||
1483 | OPTIONS(ac, av, { | |
1484 | OPTARG("-background", arg, { tag = arg; }) | |
1485 | OPTARG("-version", arg, { ver = arg; }) | |
1486 | }); | |
1487 | if (!*av) goto bad_syntax; | |
1488 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1489 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1490 | a_fail(a, "service-too-old", | |
1491 | "%s", SYM_NAME(svc), | |
1492 | "%s", svc->version, | |
1493 | A_END); | |
1494 | goto fail; | |
1495 | } | |
1496 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1497 | a_fail(a, "provider-overloaded", A_END); | |
1498 | goto fail; | |
1499 | } | |
1500 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1501 | a_jobdestroy(svcop); | |
1502 | goto fail; | |
1503 | } | |
1504 | a_write(svc->prov, "SVCJOB", 0, | |
1505 | "%s", a_jobidencode(svcop), | |
1506 | "?TOKENS", av, | |
1507 | A_END); | |
1508 | goto done; | |
1509 | ||
1510 | bad_syntax: | |
1511 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1512 | fail: | |
1513 | done: | |
1514 | dstr_destroy(&d); | |
1515 | return; | |
1516 | } | |
1517 | ||
1518 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1519 | { | |
1520 | admin_svcop *svc; | |
1521 | ||
1522 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1523 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1524 | return; | |
1525 | } | |
1526 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1527 | if (donep) { | |
1528 | a_jobdestroy(svc); | |
1529 | a_bgrelease(&svc->bg); | |
1530 | } | |
1531 | a_ok(a); | |
1532 | } | |
1533 | ||
1534 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1535 | { a_replycmd(a, "OK", 1, av); } | |
1536 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1537 | { a_replycmd(a, "INFO", 0, av); } | |
1538 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1539 | { a_replycmd(a, "FAIL", 1, av); } | |
1540 | ||
410c8acf | 1541 | /*----- Administration commands -------------------------------------------*/ |
1542 | ||
1543 | /* --- Miscellaneous commands --- */ | |
1544 | ||
3cdc3f3a | 1545 | /* --- @traceish@ --- * |
1546 | * | |
1547 | * Arguments: @admin *a@ = connection to complain on | |
1548 | * @unsigned ac@ = number of arguments | |
1549 | * @char *av[]@ = vector of arguments | |
1550 | * @const char *what@ = what we're messing with | |
1551 | * @const trace_opt *tt@ = options table | |
1552 | * @unsigned *ff@ = where the flags are | |
1553 | * | |
1554 | * Returns: Nonzero if anything changed. | |
1555 | * | |
1556 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1557 | */ | |
410c8acf | 1558 | |
3cdc3f3a | 1559 | static int traceish(admin *a, unsigned ac, char *av[], |
1560 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1561 | { |
3cdc3f3a | 1562 | int ch = 0; |
1563 | ||
410c8acf | 1564 | if (!ac || strcmp(av[0], "?") == 0) { |
1565 | const trace_opt *t; | |
3cdc3f3a | 1566 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1567 | a_info(a, "*%c%c %s", |
1568 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1569 | } |
1570 | } else { | |
1571 | unsigned sense = 1; | |
3cdc3f3a | 1572 | unsigned f = *ff; |
1573 | const trace_opt *t; | |
410c8acf | 1574 | char *p = av[0]; |
1575 | ||
1576 | while (*p) { | |
1577 | switch (*p) { | |
1578 | case '+': sense = 1; break; | |
1579 | case '-': sense = 0; break; | |
1580 | default: | |
3cdc3f3a | 1581 | for (t = tt; t->ch; t++) { |
1582 | if (t->ch == *p) { | |
1583 | if (sense) f |= t->f; | |
1584 | else f &= ~t->f; | |
410c8acf | 1585 | goto tropt_ok; |
1586 | } | |
1587 | } | |
f43df819 | 1588 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1589 | return (0); |
e04c2d50 | 1590 | tropt_ok:; |
410c8acf | 1591 | break; |
1592 | } | |
1593 | p++; | |
1594 | } | |
3cdc3f3a | 1595 | *ff = f; |
1596 | ch = 1; | |
410c8acf | 1597 | } |
3cdc3f3a | 1598 | a_ok(a); |
1599 | return (ch); | |
1600 | } | |
1601 | ||
1602 | #ifndef NTRACE | |
1603 | ||
1604 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1605 | { | |
1606 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1607 | trace_level(tr_flags); | |
410c8acf | 1608 | } |
1609 | ||
1610 | #endif | |
1611 | ||
3cdc3f3a | 1612 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1613 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1614 | |
3cdc3f3a | 1615 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1616 | const char *status, char *av[]) |
1617 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1618 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1619 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1620 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1621 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1622 | |
410c8acf | 1623 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1624 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1625 | |
410c8acf | 1626 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1627 | { | |
1628 | if (flags & F_DAEMON) | |
f43df819 | 1629 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1630 | else { |
f43df819 | 1631 | a_notify("DAEMON", A_END); |
93bee2c4 | 1632 | if (a_stdin) |
410c8acf | 1633 | a_destroy(a_stdin); |
19dd2531 | 1634 | if (daemonize()) |
f43df819 | 1635 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1636 | else { |
410c8acf | 1637 | flags |= F_DAEMON; |
3cdc3f3a | 1638 | a_ok(a); |
93bee2c4 | 1639 | } |
410c8acf | 1640 | } |
1641 | } | |
1642 | ||
ff92ffd3 MW |
1643 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1644 | { | |
1645 | admin_bgop *bg; | |
1646 | ||
1647 | for (bg = a->bg; bg; bg = bg->next) { | |
1648 | assert(bg->tag); | |
1649 | a_info(a, "%s", bg->tag, A_END); | |
1650 | } | |
1651 | a_ok(a); | |
1652 | } | |
1653 | ||
1654 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1655 | { | |
1656 | admin_bgop *bg; | |
1657 | ||
1658 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1659 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1660 | else { | |
1661 | bg->cancel(bg); | |
1662 | a_bgrelease(bg); | |
1663 | a_ok(a); | |
1664 | } | |
1665 | } | |
1666 | ||
410c8acf | 1667 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1668 | { | |
c8e02c8a | 1669 | FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); }); |
3cdc3f3a | 1670 | a_ok(a); |
410c8acf | 1671 | } |
1672 | ||
1673 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1674 | { | |
1675 | peer *p; | |
1676 | ||
37941236 | 1677 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1678 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1679 | a_ok(a); |
1680 | } | |
410c8acf | 1681 | } |
1682 | ||
64cf2223 MW |
1683 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1684 | { | |
1685 | peer *p; | |
1686 | ||
1687 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1688 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1689 | p_setifname(p, av[1]); | |
1690 | a_ok(a); | |
e04c2d50 | 1691 | } |
64cf2223 MW |
1692 | } |
1693 | ||
37941236 | 1694 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1695 | { | |
1696 | buf b; | |
1697 | ||
1698 | buf_init(&b, buf_i, PKBUFSZ); | |
1699 | c_new(&b); | |
f43df819 | 1700 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1701 | a_ok(a); |
1702 | } | |
1703 | ||
1704 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1705 | { | |
1706 | base64_ctx b64; | |
1707 | buf b; | |
1708 | dstr d = DSTR_INIT; | |
1709 | ||
1710 | base64_init(&b64); | |
1711 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1712 | base64_decode(&b64, 0, 0, &d); | |
1713 | buf_init(&b, d.buf, d.len); | |
1714 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1715 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1716 | else |
1717 | a_ok(a); | |
1718 | dstr_destroy(&d); | |
1719 | } | |
1720 | ||
1721 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1722 | { | |
1723 | peer *p; | |
1724 | base64_ctx b64; | |
1725 | dstr d = DSTR_INIT; | |
1726 | ||
1727 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1728 | base64_init(&b64); | |
1729 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1730 | base64_decode(&b64, 0, 0, &d); | |
1731 | p_greet(p, d.buf, d.len); | |
1732 | dstr_destroy(&d); | |
1733 | a_ok(a); | |
1734 | } | |
1735 | } | |
1736 | ||
410c8acf | 1737 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1738 | { | |
1739 | peer *p; | |
1740 | const addr *ad; | |
1741 | ||
37941236 | 1742 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1743 | ad = p_addr(p); |
1744 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1745 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1746 | a_ok(a); |
410c8acf | 1747 | } |
1748 | } | |
1749 | ||
060ca767 | 1750 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1751 | { | |
1752 | peer *p; | |
1753 | const peerspec *ps; | |
1754 | ||
37941236 | 1755 | if ((p = a_findpeer(a, av[0])) != 0) { |
1756 | ps = p_spec(p); | |
f43df819 MW |
1757 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
1758 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); | |
37941236 | 1759 | a_ok(a); |
060ca767 | 1760 | } |
060ca767 | 1761 | } |
1762 | ||
1763 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1764 | { | |
f43df819 MW |
1765 | a_info(a, "implementation=edgeware-tripe", A_END); |
1766 | a_info(a, "version=%s", VERSION, A_END); | |
1767 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1768 | a_ok(a); |
1769 | } | |
1770 | ||
c7053da9 | 1771 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1772 | { | |
1773 | peer *p; | |
1774 | stats *st; | |
1775 | ||
37941236 | 1776 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1777 | return; |
060ca767 | 1778 | |
1779 | st = p_stats(p); | |
f43df819 MW |
1780 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1781 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1782 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
1783 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
1784 | a_info(a, | |
1785 | "packets-out=%lu", st->n_out, | |
1786 | "bytes-out=%lu", st->sz_out, | |
1787 | A_END); | |
1788 | a_info(a, | |
1789 | "keyexch-packets-in=%lu", st->n_kxin, | |
1790 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
1791 | A_END); | |
1792 | a_info(a, | |
1793 | "keyexch-packets-out=%lu", st->n_kxout, | |
1794 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
1795 | A_END); | |
1796 | a_info(a, | |
1797 | "ip-packets-in=%lu", st->n_ipin, | |
1798 | "ip-bytes-in=%lu", st->sz_ipin, | |
1799 | A_END); | |
1800 | a_info(a, | |
e04c2d50 | 1801 | "ip-packets-out=%lu", st->n_ipout, |
18ad8913 MW |
1802 | "ip-bytes-out=%lu", st->sz_ipout, |
1803 | A_END); | |
f43df819 | 1804 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 1805 | a_ok(a); |
c7053da9 | 1806 | } |
1807 | ||
410c8acf | 1808 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1809 | { | |
1810 | peer *p; | |
f98df549 | 1811 | |
37941236 | 1812 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1813 | p_destroy(p); |
3cdc3f3a | 1814 | a_ok(a); |
410c8acf | 1815 | } |
1816 | } | |
1817 | ||
0ba8de86 | 1818 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1819 | { | |
1820 | peer *p; | |
f98df549 | 1821 | |
37941236 | 1822 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1823 | kx_start(&p->kx, 1); |
0ba8de86 | 1824 | a_ok(a); |
1825 | } | |
1826 | } | |
1827 | ||
de014da6 | 1828 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1829 | { p_keyreload(); a_ok(a); } | |
1830 | ||
410c8acf | 1831 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1832 | { | |
f43df819 | 1833 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1834 | a_ok(a); |
410c8acf | 1835 | a_quit(); |
1836 | } | |
1837 | ||
3cdc3f3a | 1838 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1839 | { | |
f43df819 | 1840 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1841 | a_ok(a); |
1842 | } | |
1843 | ||
42da2a58 | 1844 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1845 | { | |
1846 | int i; | |
f98df549 | 1847 | |
42da2a58 | 1848 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1849 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1850 | a_ok(a); |
1851 | } | |
1852 | ||
410c8acf | 1853 | /* --- The command table and help --- */ |
1854 | ||
1855 | typedef struct acmd { | |
1856 | const char *name; | |
1857 | const char *help; | |
1858 | unsigned argmin, argmax; | |
1859 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1860 | } acmd; | |
1861 | ||
1862 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1863 | ||
1864 | static const acmd acmdtab[] = { | |
9986f0b5 | 1865 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1866 | { "addr", "PEER", 1, 1, acmd_addr }, |
ff92ffd3 | 1867 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1868 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1869 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1870 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1871 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1872 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1873 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1874 | { "help", 0, 0, 0, acmd_help }, | |
1875 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1876 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1877 | { "kill", "PEER", 1, 1, acmd_kill }, |
1878 | { "list", 0, 0, 0, acmd_list }, | |
1879 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1880 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1881 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1882 | { "port", 0, 0, 0, acmd_port }, | |
1883 | { "quit", 0, 0, 0, acmd_quit }, | |
1884 | { "reload", 0, 0, 0, acmd_reload }, | |
1885 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1886 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
be6a1b7a MW |
1887 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
1888 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
1889 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
1890 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 1891 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 1892 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
1893 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
1894 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
1895 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
1896 | 2, 0xffff, acmd_svcsubmit }, | |
f43df819 | 1897 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1898 | #ifndef NTRACE |
f43df819 | 1899 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1900 | #endif |
f43df819 MW |
1901 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1902 | { "version", 0, 0, 0, acmd_version }, | |
1903 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
e04c2d50 | 1904 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, |
410c8acf | 1905 | { 0, 0, 0, 0, 0 } |
1906 | }; | |
1907 | ||
1908 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1909 | { | |
1910 | const acmd *c; | |
f98df549 | 1911 | |
f43df819 MW |
1912 | for (c = acmdtab; c->name; c++) { |
1913 | if (c->help) | |
1914 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
e04c2d50 | 1915 | else |
f43df819 MW |
1916 | a_info(a, "%s", c->name, A_END); |
1917 | } | |
3cdc3f3a | 1918 | a_ok(a); |
410c8acf | 1919 | } |
1920 | ||
1921 | /*----- Connection handling -----------------------------------------------*/ | |
1922 | ||
c511e1f9 | 1923 | /* --- @a_destroypending@ --- * |
410c8acf | 1924 | * |
c511e1f9 | 1925 | * Arguments: --- |
fd3cf232 | 1926 | * |
1927 | * Returns: --- | |
1928 | * | |
c511e1f9 | 1929 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 1930 | */ |
1931 | ||
c511e1f9 | 1932 | static void a_destroypending(void) |
410c8acf | 1933 | { |
94593d1b | 1934 | admin *a, *aa, *head; |
de014da6 | 1935 | admin_bgop *bg, *bbg; |
be6a1b7a | 1936 | admin_service *svc, *ssvc; |
de014da6 | 1937 | |
94593d1b MW |
1938 | /* --- Destroy connections marked as pending --- * |
1939 | * | |
1940 | * Slightly messy. Killing clients may cause others to finally die. Make | |
1941 | * sure that they can be put on the list without clobbering anything or | |
1942 | * getting lost. | |
1943 | */ | |
fd3cf232 | 1944 | |
94593d1b MW |
1945 | while (a_dead) { |
1946 | head = a_dead; | |
1947 | a_dead = 0; | |
1948 | for (a = head; a; a = aa) { | |
1949 | aa = a->next; | |
1950 | assert(a->f & AF_DEAD); | |
c511e1f9 | 1951 | |
94593d1b | 1952 | /* --- Report what we're doing --- */ |
c511e1f9 | 1953 | |
94593d1b MW |
1954 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
1955 | a->seq); ) | |
c511e1f9 | 1956 | |
94593d1b | 1957 | /* --- If this is the foreground client then shut down --- */ |
46dde080 | 1958 | |
94593d1b MW |
1959 | if (a->f & AF_FOREGROUND) { |
1960 | T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); ) | |
1961 | a_warn("SERVER", "quit", "foreground-eof", A_END); | |
1962 | a_quit(); | |
1963 | } | |
46dde080 | 1964 | |
94593d1b | 1965 | /* --- Abort any background jobs in progress --- */ |
c511e1f9 | 1966 | |
94593d1b MW |
1967 | for (bg = a->bg; bg; bg = bbg) { |
1968 | bbg = bg->next; | |
1969 | bg->cancel(bg); | |
1970 | if (bg->tag) xfree(bg->tag); | |
1971 | xfree(bg); | |
1972 | } | |
c511e1f9 | 1973 | |
94593d1b | 1974 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a | 1975 | |
94593d1b MW |
1976 | for (svc = a->svcs; svc; svc = ssvc) { |
1977 | ssvc = svc->next; | |
1978 | a_svcrelease(svc); | |
1979 | } | |
1980 | a_jobtablefinal(&a->j); | |
be6a1b7a | 1981 | |
94593d1b | 1982 | /* --- Close file descriptors and selectory --- */ |
c511e1f9 | 1983 | |
94593d1b MW |
1984 | selbuf_destroy(&a->b); |
1985 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
1986 | close(a->w.fd); | |
1987 | if (a_stdin == a) a_stdin = 0; | |
c511e1f9 | 1988 | |
94593d1b | 1989 | /* --- Done --- */ |
c511e1f9 | 1990 | |
94593d1b MW |
1991 | DESTROY(a); |
1992 | } | |
410c8acf | 1993 | } |
060ca767 | 1994 | } |
1995 | ||
fd3cf232 | 1996 | /* --- @a_destroy@ --- * |
1997 | * | |
1998 | * Arguments: @admin *a@ = pointer to an admin block | |
1999 | * | |
2000 | * Returns: --- | |
2001 | * | |
2002 | * Use: Destroys an admin block. This requires a certain amount of | |
2003 | * care. | |
2004 | */ | |
2005 | ||
de014da6 | 2006 | static void freequeue(oqueue *q) |
2007 | { | |
2008 | obuf *o, *oo; | |
2009 | ||
2010 | for (o = q->hd; o; o = oo) { | |
2011 | oo = o->next; | |
2012 | xfree(o); | |
2013 | } | |
2014 | q->hd = q->tl = 0; | |
2015 | } | |
2016 | ||
fd3cf232 | 2017 | static void a_destroy(admin *a) |
2018 | { | |
fd3cf232 | 2019 | if (a->f & AF_DEAD) |
2020 | return; | |
2021 | ||
c511e1f9 MW |
2022 | if (a->next) a->next->prev = a->prev; |
2023 | if (a->prev) a->prev->next = a->next; | |
2024 | else admins = a->next; | |
fd3cf232 | 2025 | |
c511e1f9 | 2026 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 2027 | freequeue(&a->out); |
fd3cf232 | 2028 | |
c511e1f9 MW |
2029 | a->f |= AF_DEAD; |
2030 | a->next = a_dead; | |
2031 | a_dead = a; | |
fd3cf232 | 2032 | |
c511e1f9 | 2033 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2034 | } |
2035 | ||
410c8acf | 2036 | /* --- @a_line@ --- * |
2037 | * | |
2038 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2039 | * @size_t len@ = length of the line |
410c8acf | 2040 | * @void *vp@ = pointer to my admin block |
2041 | * | |
2042 | * Returns: --- | |
2043 | * | |
2044 | * Use: Handles a line of input. | |
2045 | */ | |
2046 | ||
3008eabf | 2047 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2048 | { |
2049 | admin *a = vp; | |
2050 | const acmd *c; | |
6f88042a | 2051 | char *av[16 + 1]; |
410c8acf | 2052 | size_t ac; |
2053 | ||
8d0c7a83 | 2054 | TIMER; |
fd3cf232 | 2055 | if (a->f & AF_DEAD) |
2056 | return; | |
410c8acf | 2057 | if (!p) { |
de014da6 | 2058 | if (!a->bg) |
2059 | a_destroy(a); | |
2060 | else { | |
2061 | a->f |= AF_CLOSE; | |
2062 | selbuf_disable(&a->b); | |
2063 | } | |
410c8acf | 2064 | return; |
2065 | } | |
6f88042a | 2066 | ac = str_qsplit(p, av, N(av) - 1, 0, STRF_QUOTE); |
410c8acf | 2067 | if (!ac) |
2068 | return; | |
6f88042a | 2069 | av[ac] = 0; |
410c8acf | 2070 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2071 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2072 | ac--; |
f43df819 MW |
2073 | if (c->argmin > ac || ac > c->argmax) { |
2074 | if (!c->help) | |
2075 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
e04c2d50 | 2076 | else |
f43df819 | 2077 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); |
c511e1f9 | 2078 | } else |
410c8acf | 2079 | c->func(a, ac, av + 1); |
2080 | return; | |
2081 | } | |
2082 | } | |
f43df819 | 2083 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2084 | } |
2085 | ||
2086 | /* --- @a_create@ --- * | |
2087 | * | |
2088 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2089 | * @unsigned f@ = initial flags to set |
410c8acf | 2090 | * |
2091 | * Returns: --- | |
2092 | * | |
2093 | * Use: Creates a new admin connection. | |
2094 | */ | |
2095 | ||
3cdc3f3a | 2096 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2097 | { |
2098 | admin *a = CREATE(admin); | |
3cdc3f3a | 2099 | |
93bee2c4 | 2100 | T( static unsigned seq = 0; |
2101 | a->seq = seq++; ) | |
410c8acf | 2102 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2103 | a->bg = 0; |
042d5c20 | 2104 | a->ref = 0; |
be6a1b7a | 2105 | a->svcs = 0; |
5d46c0f8 | 2106 | a_jobtableinit(&a->j); |
3cdc3f3a | 2107 | a->f = f; |
de014da6 | 2108 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2109 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2110 | if (fd_out != fd_in) |
fd3cf232 | 2111 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2112 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2113 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2114 | a->out.hd = a->out.tl = 0; |
410c8acf | 2115 | a->next = admins; |
2116 | a->prev = 0; | |
de014da6 | 2117 | if (admins) admins->prev = a; |
410c8acf | 2118 | admins = a; |
2119 | } | |
2120 | ||
2121 | /* --- @a_accept@ --- * | |
2122 | * | |
2123 | * Arguments: @int fd@ = file descriptor to accept | |
2124 | * @unsigned mode@ = what to do | |
2125 | * @void *v@ = uninteresting pointer | |
2126 | * | |
2127 | * Returns: --- | |
2128 | * | |
2129 | * Use: Accepts a new admin connection. | |
2130 | */ | |
2131 | ||
2132 | static void a_accept(int fd, unsigned mode, void *v) | |
2133 | { | |
2134 | int nfd; | |
2135 | struct sockaddr_un sun; | |
2136 | size_t sz = sizeof(sun); | |
2137 | ||
2138 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2139 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2140 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2141 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2142 | return; |
2143 | } | |
3cdc3f3a | 2144 | a_create(nfd, nfd, 0); |
410c8acf | 2145 | } |
2146 | ||
c511e1f9 MW |
2147 | /* --- @a_preselect@ --- * |
2148 | * | |
2149 | * Arguments: --- | |
2150 | * | |
2151 | * Returns: --- | |
2152 | * | |
2153 | * Use: Informs the admin module that we're about to select again, | |
2154 | * and that it should do cleanup things it has delayed until a | |
2155 | * `safe' time. | |
2156 | */ | |
2157 | ||
2158 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2159 | ||
410c8acf | 2160 | /* --- @a_daemon@ --- * |
2161 | * | |
2162 | * Arguments: --- | |
2163 | * | |
2164 | * Returns: --- | |
2165 | * | |
2166 | * Use: Informs the admin module that it's a daemon. | |
2167 | */ | |
2168 | ||
f98df549 | 2169 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2170 | |
2171 | /* --- @a_init@ --- * | |
2172 | * | |
2173 | * Arguments: @const char *name@ = socket name to create | |
aa2405e8 MW |
2174 | * @uid_t u@ = user to own the socket |
2175 | * @gid_t g@ = group to own the socket | |
410c8acf | 2176 | * |
2177 | * Returns: --- | |
2178 | * | |
2179 | * Use: Creates the admin listening socket. | |
2180 | */ | |
2181 | ||
aa2405e8 | 2182 | void a_init(const char *name, uid_t u, gid_t g) |
410c8acf | 2183 | { |
2184 | int fd; | |
2185 | int n = 5; | |
2186 | struct sockaddr_un sun; | |
2187 | struct sigaction sa; | |
2188 | size_t sz; | |
2189 | ||
be6a1b7a MW |
2190 | /* --- Create services table --- */ |
2191 | ||
2192 | sym_create(&a_svcs); | |
2193 | ||
410c8acf | 2194 | /* --- Set up the socket address --- */ |
2195 | ||
2196 | sz = strlen(name) + 1; | |
2197 | if (sz > sizeof(sun.sun_path)) | |
2198 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
2199 | BURN(sun); | |
2200 | sun.sun_family = AF_UNIX; | |
2201 | memcpy(sun.sun_path, name, sz); | |
2202 | sz += offsetof(struct sockaddr_un, sun_path); | |
2203 | ||
2204 | /* --- Attempt to bind to the socket --- */ | |
2205 | ||
2206 | umask(0077); | |
2207 | again: | |
2208 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
2209 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
2210 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
2211 | struct stat st; | |
2212 | int e = errno; | |
2213 | if (errno != EADDRINUSE) { | |
2214 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
2215 | sun.sun_path, strerror(e)); | |
2216 | } | |
2217 | if (!n) | |
2218 | die(EXIT_FAILURE, "too many retries; giving up"); | |
2219 | n--; | |
2220 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
2221 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
2222 | sun.sun_path); | |
2223 | } | |
2224 | if (errno != ECONNREFUSED) | |
2225 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
2226 | if (stat(sun.sun_path, &st)) { | |
2227 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
2228 | sun.sun_path, strerror(errno)); | |
2229 | } | |
2230 | if (!S_ISSOCK(st.st_mode)) | |
2231 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 2232 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2233 | unlink(sun.sun_path); |
2234 | close(fd); | |
2235 | goto again; | |
2236 | } | |
2237 | chmod(sun.sun_path, 0600); | |
aa2405e8 MW |
2238 | if (chown(sun.sun_path, u, g)) { |
2239 | T( trace(T_ADMIN, | |
2240 | "admin: failed to give away socket: %s", | |
2241 | strerror(errno)); ) | |
2242 | } | |
410c8acf | 2243 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
2244 | if (listen(fd, 5)) | |
2245 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
2246 | ||
2247 | /* --- Listen to the socket --- */ | |
2248 | ||
2249 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2250 | sel_addfile(&sock); | |
2251 | sockname = name; | |
2252 | bres_init(&sel); | |
2253 | T( trace_custom(a_trace, 0); | |
2254 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2255 | flags |= F_INIT; | |
2256 | ||
2257 | /* --- Set up signal handlers --- */ | |
2258 | ||
2259 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2260 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 2261 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 2262 | sigaction(SIGINT, 0, &sa); |
2263 | if (sa.sa_handler != SIG_IGN) | |
2264 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2265 | } | |
2266 | ||
2267 | /*----- That's all, folks -------------------------------------------------*/ |