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; | |
68 | static unsigned flags = 0; | |
69 | static admin *a_stdin = 0; | |
70 | static sig s_term, s_int, s_hup; | |
71 | ||
72 | #define F_DAEMON 1u | |
73 | #define F_INIT 2u | |
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 | /* --- @quotify@ --- * |
234 | * | |
235 | * Arguments: @dstr *d@ = where to write the answer | |
236 | * @const char *p@ = string to quotify | |
237 | * | |
238 | * Returns: --- | |
239 | * | |
240 | * Use: Quotes the given string if necessary, according to our | |
241 | * quoting rules. | |
242 | */ | |
243 | ||
244 | static void quotify(dstr *d, const char *p) | |
245 | { | |
246 | if (d->len) | |
247 | dstr_putc(d, ' '); | |
248 | if (*p && !p[strcspn(p, "\"' \t\n\v")]) | |
249 | dstr_puts(d, p); | |
250 | else { | |
251 | dstr_putc(d, '\"'); | |
252 | while (*p) { | |
253 | if (*p == '\\' || *p == '\"') | |
254 | dstr_putc(d, '\\'); | |
255 | dstr_putc(d, *p++); | |
256 | } | |
257 | dstr_putc(d, '\"'); | |
258 | } | |
259 | } | |
260 | ||
261 | /* --- @a_vformat@ --- * | |
262 | * | |
263 | * Arguments: @dstr *d@ = where to leave the formatted message | |
264 | * @const char *fmt@ = pointer to format string | |
265 | * @va_list ap@ = arguments in list | |
266 | * | |
267 | * Returns: --- | |
268 | * | |
269 | * Use: Main message token formatting driver. | |
270 | */ | |
271 | ||
272 | static void a_vformat(dstr *d, const char *fmt, va_list ap) | |
273 | { | |
274 | dstr dd = DSTR_INIT; | |
275 | ||
276 | while (fmt) { | |
277 | if (*fmt == '*') { | |
278 | dstr_putc(d, ' '); | |
279 | dstr_vputf(d, fmt + 1, &ap); | |
280 | } else if (*fmt == '?') { | |
281 | if (strcmp(fmt, "?ADDR") == 0) { | |
282 | const addr *a = va_arg(ap, const addr *); | |
283 | switch (a->sa.sa_family) { | |
284 | case AF_INET: | |
285 | quotify(d, "INET"); | |
286 | quotify(d, inet_ntoa(a->sin.sin_addr)); | |
287 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); | |
288 | break; | |
289 | default: | |
290 | abort(); | |
291 | } | |
292 | } else if (strcmp(fmt, "?B64") == 0) { | |
293 | const octet *p = va_arg(ap, const octet *); | |
294 | size_t n = va_arg(ap, size_t); | |
295 | base64_ctx b64; | |
296 | dstr_putc(d, ' '); | |
297 | base64_init(&b64); | |
298 | b64.indent = ""; | |
299 | b64.maxline = 0; | |
300 | base64_encode(&b64, p, n, d); | |
301 | base64_encode(&b64, 0, 0, d); | |
302 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
3331936b MW |
303 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
304 | const char *const *av = va_arg(ap, const char *const *); | |
305 | while (*av) quotify(d, *av++); | |
f43df819 MW |
306 | } else if (strcmp(fmt, "?PEER") == 0) |
307 | quotify(d, p_name(va_arg(ap, peer *))); | |
308 | else if (strcmp(fmt, "?ERRNO") == 0) { | |
309 | dstr_putf(d, " E%d", errno); | |
310 | quotify(d, strerror(errno)); | |
311 | } else | |
312 | abort(); | |
313 | } else { | |
314 | if (*fmt == '!') fmt++; | |
315 | DRESET(&dd); | |
316 | dstr_vputf(&dd, fmt, &ap); | |
317 | quotify(d, dd.buf); | |
318 | } | |
319 | fmt = va_arg(ap, const char *); | |
320 | } | |
321 | ||
322 | dstr_destroy(&dd); | |
323 | } | |
324 | ||
3cdc3f3a | 325 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 326 | * |
327 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 328 | * @const char *status@ = status code to report |
329 | * @const char *tag@ = tag string, or null | |
410c8acf | 330 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 331 | * @va_list ap@ = arguments in list |
410c8acf | 332 | * @...@ = other arguments |
333 | * | |
334 | * Returns: --- | |
335 | * | |
336 | * Use: Sends a message to an admin connection. | |
337 | */ | |
338 | ||
de014da6 | 339 | static void a_vwrite(admin *a, const char *status, const char *tag, |
340 | const char *fmt, va_list ap) | |
410c8acf | 341 | { |
410c8acf | 342 | dstr d = DSTR_INIT; |
de014da6 | 343 | if (tag) dstr_puts(&d, "BG"); |
344 | dstr_puts(&d, status); | |
f43df819 MW |
345 | if (tag) quotify(&d, tag); |
346 | a_vformat(&d, fmt, ap); | |
3cdc3f3a | 347 | dstr_putc(&d, '\n'); |
348 | dosend(a, d.buf, d.len); | |
349 | dstr_destroy(&d); | |
350 | } | |
351 | ||
de014da6 | 352 | static void a_write(admin *a, const char *status, const char *tag, |
353 | const char *fmt, ...) | |
3cdc3f3a | 354 | { |
355 | va_list ap; | |
410c8acf | 356 | va_start(ap, fmt); |
de014da6 | 357 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 358 | va_end(ap); |
3cdc3f3a | 359 | } |
360 | ||
361 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
362 | * | |
363 | * Arguments: @admin *a@ = connection | |
364 | * @const char *fmt@ = format string | |
365 | * @...@ = other arguments | |
366 | * | |
367 | * Returns: --- | |
368 | * | |
369 | * Use: Convenience functions for @a_write@. | |
370 | */ | |
371 | ||
f43df819 | 372 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 373 | |
374 | static void a_info(admin *a, const char *fmt, ...) | |
375 | { | |
376 | va_list ap; | |
377 | va_start(ap, fmt); | |
de014da6 | 378 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 379 | va_end(ap); |
380 | } | |
381 | ||
382 | static void a_fail(admin *a, const char *fmt, ...) | |
383 | { | |
384 | va_list ap; | |
385 | va_start(ap, fmt); | |
de014da6 | 386 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 387 | va_end(ap); |
388 | } | |
389 | ||
390 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
391 | * | |
392 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 393 | * @const char *status@ = status string |
3cdc3f3a | 394 | * @const char *fmt@ = pointer to format string |
de014da6 | 395 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 396 | * @size_t sz@ = size of raw string |
397 | * @va_list ap@ = arguments in list | |
398 | * @...@ = other arguments | |
399 | * | |
400 | * Returns: --- | |
401 | * | |
402 | * Use: Write a message to all admin connections matched by the given | |
403 | * filter. | |
404 | */ | |
405 | ||
de014da6 | 406 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 407 | const char *p, size_t sz) |
408 | { | |
409 | admin *a, *aa; | |
410 | dstr d = DSTR_INIT; | |
411 | ||
412 | if (!(flags & F_INIT)) | |
413 | return; | |
de014da6 | 414 | dstr_puts(&d, status); |
415 | if (p) { | |
416 | dstr_putc(&d, ' '); | |
3cdc3f3a | 417 | dstr_putm(&d, p, sz); |
de014da6 | 418 | } |
3cdc3f3a | 419 | dstr_putc(&d, '\n'); |
420 | p = d.buf; | |
421 | sz = d.len; | |
422 | for (a = admins; a; a = aa) { | |
423 | aa = a->next; | |
424 | if ((a->f & f_and) == f_eq) | |
425 | dosend(a, d.buf, d.len); | |
426 | } | |
410c8acf | 427 | dstr_destroy(&d); |
428 | } | |
429 | ||
3cdc3f3a | 430 | static void a_valert(unsigned f_and, unsigned f_eq, const char *tag, |
431 | const char *fmt, va_list ap) | |
432 | { | |
433 | dstr d = DSTR_INIT; | |
434 | ||
435 | if (!(flags & F_INIT)) | |
436 | return; | |
f43df819 | 437 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 438 | a_rawalert(f_and, f_eq, tag, fmt ? d.buf : 0, fmt ? d.len : 0); |
439 | dstr_destroy(&d); | |
440 | } | |
441 | ||
3cdc3f3a | 442 | static void a_alert(unsigned f_and, unsigned f_eq, const char *tag, |
443 | const char *fmt, ...) | |
444 | { | |
445 | va_list ap; | |
446 | va_start(ap, fmt); | |
447 | a_valert(f_and, f_eq, tag, fmt, ap); | |
448 | va_end(ap); | |
449 | } | |
3cdc3f3a | 450 | |
410c8acf | 451 | /* --- @a_warn@ --- * |
452 | * | |
453 | * Arguments: @const char *fmt@ = pointer to format string | |
454 | * @...@ = other arguments | |
455 | * | |
456 | * Returns: --- | |
457 | * | |
458 | * Use: Informs all admin connections of a warning. | |
459 | */ | |
460 | ||
461 | void a_warn(const char *fmt, ...) | |
462 | { | |
463 | va_list ap; | |
410c8acf | 464 | |
410c8acf | 465 | va_start(ap, fmt); |
3cdc3f3a | 466 | if (flags & F_INIT) |
467 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 468 | else { |
f43df819 | 469 | dstr d = DSTR_INIT; |
3cdc3f3a | 470 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
471 | a_vformat(&d, fmt, ap); |
472 | dstr_putc(&d, '\n'); | |
473 | dstr_write(&d, stderr); | |
474 | dstr_destroy(&d); | |
410c8acf | 475 | } |
3cdc3f3a | 476 | va_end(ap); |
410c8acf | 477 | } |
478 | ||
479 | /* --- @a_trace@ --- * | |
480 | * | |
481 | * Arguments: @const char *p@ = pointer to a buffer | |
482 | * @size_t sz@ = size of the buffer | |
483 | * @void *v@ = uninteresting pointer | |
484 | * | |
485 | * Returns: --- | |
486 | * | |
3cdc3f3a | 487 | * Use: Custom trace output handler. Sends trace messages to |
488 | * interested admin connections. | |
410c8acf | 489 | */ |
490 | ||
491 | #ifndef NTRACE | |
492 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 493 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 494 | #endif |
495 | ||
3cdc3f3a | 496 | /* --- @a_notify@ --- * |
497 | * | |
498 | * Arguments: @const char *fmt@ = pointer to format string | |
499 | * @...@ = other arguments | |
500 | * | |
501 | * Returns: --- | |
502 | * | |
503 | * Use: Sends a notification to interested admin connections. | |
504 | */ | |
505 | ||
506 | void a_notify(const char *fmt, ...) | |
507 | { | |
508 | va_list ap; | |
509 | ||
510 | va_start(ap, fmt); | |
511 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
512 | va_end(ap); | |
513 | } | |
514 | ||
410c8acf | 515 | /* --- @a_quit@ --- * |
516 | * | |
517 | * Arguments: --- | |
518 | * | |
519 | * Returns: --- | |
520 | * | |
521 | * Use: Shuts things down nicely. | |
522 | */ | |
523 | ||
524 | void a_quit(void) | |
525 | { | |
42da2a58 | 526 | peer *p; |
527 | ||
410c8acf | 528 | close(sock.fd); |
529 | unlink(sockname); | |
de014da6 | 530 | while ((p = p_first()) != 0) |
531 | p_destroy(p); | |
410c8acf | 532 | exit(0); |
533 | } | |
534 | ||
535 | /* --- @a_sigdie@ --- * | |
536 | * | |
537 | * Arguments: @int sig@ = signal number | |
538 | * @void *v@ = an uninteresting argument | |
539 | * | |
540 | * Returns: --- | |
541 | * | |
542 | * Use Shuts down on receipt of a fatal signal. | |
543 | */ | |
544 | ||
545 | static void a_sigdie(int sig, void *v) | |
546 | { | |
547 | char *p; | |
548 | char buf[20]; | |
549 | ||
550 | switch (sig) { | |
551 | case SIGTERM: p = "SIGTERM"; break; | |
552 | case SIGINT: p = "SIGINT"; break; | |
553 | default: | |
3cdc3f3a | 554 | sprintf(buf, "%i", sig); |
410c8acf | 555 | p = buf; |
556 | break; | |
557 | } | |
f43df819 | 558 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 559 | a_quit(); |
560 | } | |
561 | ||
562 | /* --- @a_sighup@ --- * | |
563 | * | |
564 | * Arguments: @int sig@ = signal number | |
565 | * @void *v@ = an uninteresting argument | |
566 | * | |
567 | * Returns: --- | |
568 | * | |
569 | * Use Logs a message about SIGHUP not being useful. | |
570 | */ | |
571 | ||
572 | static void a_sighup(int sig, void *v) | |
573 | { | |
f43df819 | 574 | a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); |
410c8acf | 575 | } |
576 | ||
0ba8de86 | 577 | /* --- @a_parsetime@ --- * |
578 | * | |
579 | * Arguments; @const char *p@ = time string to parse | |
580 | * | |
581 | * Returns: Time in seconds, or @< 0@ on error. | |
582 | */ | |
583 | ||
584 | static long a_parsetime(const char *p) | |
585 | { | |
586 | char *q; | |
587 | long t = strtol(p, &q, 0); | |
588 | ||
589 | switch (*q) { | |
590 | case 'd': t *= 24; | |
591 | case 'h': t *= 60; | |
592 | case 'm': t *= 60; | |
593 | case 's': if (q[1] != 0) | |
594 | default: t = -1; | |
595 | case 0: break; | |
596 | } | |
597 | return (t); | |
598 | } | |
599 | ||
37941236 | 600 | /* --- @a_findpeer@ --- * |
601 | * | |
602 | * Arguments: @admin *a@ = admin connection | |
603 | * @const char *pn@ = peer name | |
604 | * | |
605 | * Returns: The peer, or null if not there. | |
606 | * | |
607 | * Use: Finds a peer, reporting an error if it failed. | |
608 | */ | |
609 | ||
610 | static peer *a_findpeer(admin *a, const char *pn) | |
611 | { | |
612 | peer *p; | |
613 | ||
614 | if ((p = p_find(pn)) == 0) | |
f43df819 | 615 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 616 | return (p); |
617 | } | |
618 | ||
de014da6 | 619 | /*----- Backgrounded operations -------------------------------------------*/ |
620 | ||
060ca767 | 621 | #define BGTAG(bg) \ |
622 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
623 | ||
ff92ffd3 MW |
624 | /* --- @a_bgfind@ --- * |
625 | * | |
626 | * Arguments: @admin *a@ = a client block | |
627 | * @const char *tag@ = the requested tag | |
628 | * | |
629 | * Returns: The requested background job, or null. | |
630 | */ | |
631 | ||
632 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
633 | { | |
634 | admin_bgop *bg; | |
635 | ||
636 | for (bg = a->bg; bg; bg = bg->next) { | |
637 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
638 | return (bg); | |
639 | } | |
640 | return (0); | |
641 | } | |
642 | ||
de014da6 | 643 | /* --- @a_bgrelease@ --- * |
644 | * | |
645 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
646 | * | |
647 | * Returns: --- | |
648 | * | |
649 | * Use: Removes a backgrounded operation from the queue, since | |
650 | * (presumably) it's done. | |
651 | */ | |
652 | ||
653 | static void a_bgrelease(admin_bgop *bg) | |
654 | { | |
655 | admin *a = bg->a; | |
656 | ||
060ca767 | 657 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
658 | if (bg->tag) xfree(bg->tag); | |
659 | else selbuf_enable(&a->b); | |
660 | if (bg->next) bg->next->prev = bg->prev; | |
661 | if (bg->prev) bg->prev->next = bg->next; | |
662 | else a->bg = bg->next; | |
de014da6 | 663 | xfree(bg); |
547a9c13 | 664 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 665 | } |
666 | ||
667 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
668 | * | |
669 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
670 | * @const char *fmt@ = format string | |
671 | * @...@ = other arguments | |
672 | * | |
673 | * Returns: --- | |
674 | * | |
675 | * Use: Convenience functions for @a_write@. | |
676 | */ | |
677 | ||
678 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 679 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 680 | |
681 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
682 | { | |
683 | va_list ap; | |
684 | va_start(ap, fmt); | |
685 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
686 | va_end(ap); | |
687 | } | |
688 | ||
689 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
690 | { | |
691 | va_list ap; | |
692 | va_start(ap, fmt); | |
693 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
694 | va_end(ap); | |
695 | } | |
696 | ||
697 | /* --- @a_bgadd@ --- * | |
698 | * | |
699 | * Arguments: @admin *a@ = administration connection | |
700 | * @admin_bgop *bg@ = pointer to background operation | |
701 | * @const char *tag@ = background tag, or null for foreground | |
702 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
703 | * | |
ff92ffd3 | 704 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 705 | * |
706 | * Use: Links a background job into the list. | |
707 | */ | |
708 | ||
ff92ffd3 MW |
709 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
710 | void (*cancel)(admin_bgop *)) | |
de014da6 | 711 | { |
ff92ffd3 MW |
712 | if (tag) { |
713 | if (a_bgfind(a, tag)) { | |
714 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
715 | return (-1); | |
716 | } | |
de014da6 | 717 | bg->tag = xstrdup(tag); |
ff92ffd3 | 718 | } |
de014da6 | 719 | else { |
720 | bg->tag = 0; | |
721 | selbuf_disable(&a->b); | |
722 | } | |
723 | bg->a = a; | |
724 | bg->cancel = cancel; | |
725 | bg->next = a->bg; | |
726 | bg->prev = 0; | |
060ca767 | 727 | if (a->bg) a->bg->prev = bg; |
de014da6 | 728 | a->bg = bg; |
060ca767 | 729 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 730 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 731 | return (0); |
de014da6 | 732 | } |
733 | ||
37941236 | 734 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 735 | |
37941236 | 736 | /* --- @a_resolved@ --- * |
de014da6 | 737 | * |
37941236 | 738 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
739 | * @void *v@ = pointer to resolver operation | |
de014da6 | 740 | * |
741 | * Returns: --- | |
742 | * | |
37941236 | 743 | * Use: Handles a completed name resolution. |
de014da6 | 744 | */ |
745 | ||
37941236 | 746 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 747 | { |
37941236 | 748 | admin_resop *r = v; |
749 | ||
750 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
751 | TIMER; | |
752 | if (!h) { | |
f43df819 | 753 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 754 | r->func(r, ARES_FAIL); |
755 | } else { | |
756 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
757 | r->func(r, ARES_OK); | |
758 | } | |
759 | sel_rmtimer(&r->t); | |
760 | xfree(r->addr); | |
761 | a_bgrelease(&r->bg); | |
762 | } | |
de014da6 | 763 | |
37941236 | 764 | /* --- @a_restimer@ --- * |
de014da6 | 765 | * |
37941236 | 766 | * Arguments: @struct timeval *tv@ = timer |
767 | * @void *v@ = pointer to resolver operation | |
de014da6 | 768 | * |
769 | * Returns: --- | |
770 | * | |
37941236 | 771 | * Use: Times out a resolver. |
de014da6 | 772 | */ |
773 | ||
37941236 | 774 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 775 | { |
37941236 | 776 | admin_resop *r = v; |
777 | ||
778 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 779 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 780 | r->func(r, ARES_FAIL); |
781 | bres_abort(&r->r); | |
782 | xfree(r->addr); | |
783 | a_bgrelease(&r->bg); | |
de014da6 | 784 | } |
785 | ||
37941236 | 786 | /* --- @a_rescancel@ --- * |
de014da6 | 787 | * |
37941236 | 788 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 789 | * |
790 | * Returns: --- | |
791 | * | |
37941236 | 792 | * Use: Cancels an add operation. |
de014da6 | 793 | */ |
794 | ||
37941236 | 795 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 796 | { |
37941236 | 797 | admin_resop *r = (admin_resop *)bg; |
798 | ||
799 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
800 | r->func(r, ARES_FAIL); | |
801 | sel_rmtimer(&r->t); | |
802 | xfree(r->addr); | |
803 | bres_abort(&r->r); | |
de014da6 | 804 | } |
37941236 | 805 | |
806 | /* --- @a_resolve@ --- * | |
410c8acf | 807 | * |
37941236 | 808 | * Arguments: @admin *a@ = administration connection |
809 | * @admin_resop *r@ = resolver operation to run | |
810 | * @const char *tag@ = background operation tag | |
811 | * @void (*func)(struct admin_resop *, int@ = handler function | |
812 | * @unsigned ac@ = number of remaining arguments | |
813 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 814 | * |
815 | * Returns: --- | |
816 | * | |
37941236 | 817 | * Use: Cranks up a resolver job. |
410c8acf | 818 | */ |
819 | ||
37941236 | 820 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
821 | void (*func)(struct admin_resop *, int), | |
822 | unsigned ac, char *av[]) | |
410c8acf | 823 | { |
37941236 | 824 | struct timeval tv; |
825 | unsigned long pt; | |
826 | char *p; | |
827 | int i = 0; | |
fd3cf232 | 828 | |
37941236 | 829 | /* --- Fill in the easy bits of address --- */ |
830 | ||
452bf3f6 | 831 | r->bg.tag = "<starting>"; |
37941236 | 832 | r->addr = 0; |
833 | r->func = func; | |
834 | if (mystrieq(av[i], "inet")) i++; | |
835 | if (ac - i != 2) { | |
f43df819 | 836 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS PORT", A_END); |
37941236 | 837 | goto fail; |
838 | } | |
839 | r->sa.sin.sin_family = AF_INET; | |
840 | r->sasz = sizeof(r->sa.sin); | |
841 | r->addr = xstrdup(av[i]); | |
842 | pt = strtoul(av[i + 1], &p, 0); | |
843 | if (*p) { | |
844 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
845 | if (!s) { | |
fd68efa9 | 846 | a_fail(a, "unknown-port", "%s", av[i + 1], A_END); |
37941236 | 847 | goto fail; |
848 | } | |
849 | pt = ntohs(s->s_port); | |
410c8acf | 850 | } |
37941236 | 851 | if (pt == 0 || pt >= 65536) { |
f43df819 | 852 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 853 | goto fail; |
854 | } | |
855 | r->sa.sin.sin_port = htons(pt); | |
856 | ||
857 | /* --- Report backgrounding --- * | |
858 | * | |
859 | * Do this for consistency of interface, even if we're going to get the | |
860 | * answer straight away. | |
861 | */ | |
862 | ||
ff92ffd3 MW |
863 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
864 | goto fail; | |
37941236 | 865 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
866 | a->seq, BGTAG(r), r->addr); ) | |
867 | ||
868 | /* --- If the name is numeric, do it the easy way --- */ | |
869 | ||
870 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { | |
871 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
872 | func(r, ARES_OK); | |
873 | xfree(r->addr); | |
874 | a_bgrelease(&r->bg); | |
875 | return; | |
876 | } | |
877 | ||
878 | /* --- Store everything for later and crank up the resolver --- */ | |
879 | ||
880 | gettimeofday(&tv, 0); | |
881 | tv.tv_sec += T_RESOLVE; | |
882 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
883 | bres_byname(&r->r, r->addr, a_resolved, r); | |
884 | return; | |
885 | ||
886 | fail: | |
887 | func(r, ARES_FAIL); | |
888 | if (r->addr) xfree(r->addr); | |
889 | xfree(r); | |
410c8acf | 890 | } |
891 | ||
e7a4d919 MW |
892 | /*----- Option parsing ----------------------------------------------------*/ |
893 | ||
894 | #define OPTIONS(argc, argv, guts) do { \ | |
895 | char **o_av = argv; \ | |
896 | for (;; o_av++) { \ | |
897 | if (!*o_av) \ | |
898 | break; \ | |
899 | if (mystrieq(*o_av, "--")) { \ | |
900 | o_av++; \ | |
901 | break; \ | |
902 | } \ | |
903 | guts \ | |
904 | if (**o_av == '-') \ | |
905 | goto bad_syntax; \ | |
906 | break; \ | |
907 | } \ | |
908 | argc -= o_av - argv; \ | |
909 | argv = o_av; \ | |
910 | } while (0) | |
911 | ||
912 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
913 | ||
914 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
915 | const char *arg; \ | |
916 | arg = *++o_av; \ | |
917 | if (!arg) goto bad_syntax; \ | |
918 | guts \ | |
919 | }) | |
920 | ||
921 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
922 | long arg; \ | |
923 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
924 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
925 | goto fail; \ | |
926 | } \ | |
927 | guts \ | |
928 | }) | |
929 | ||
37941236 | 930 | /*----- Adding peers ------------------------------------------------------*/ |
931 | ||
932 | /* --- @a_doadd@ --- * | |
410c8acf | 933 | * |
37941236 | 934 | * Arguments: @admin_resop *r@ = resolver operation |
935 | * @int rc@ = how it worked | |
410c8acf | 936 | * |
937 | * Returns: --- | |
938 | * | |
37941236 | 939 | * Use: Handles a completed resolution. |
410c8acf | 940 | */ |
941 | ||
37941236 | 942 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 943 | { |
37941236 | 944 | admin_addop *add = (admin_addop *)r; |
945 | ||
946 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
947 | ||
948 | if (rc == ARES_OK) { | |
949 | add->peer.sasz = add->r.sasz; | |
950 | add->peer.sa = add->r.sa; | |
951 | if (p_find(add->peer.name)) | |
f43df819 | 952 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 953 | else if (!p_create(&add->peer)) |
f43df819 | 954 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 955 | else |
956 | a_bgok(&add->r.bg); | |
957 | } | |
de014da6 | 958 | |
37941236 | 959 | xfree(add->peer.name); |
410c8acf | 960 | } |
961 | ||
962 | /* --- @acmd_add@ --- * | |
963 | * | |
964 | * Arguments: @admin *a@ = connection which requested the addition | |
965 | * @unsigned ac@ = argument count | |
966 | * @char *av[]@ = pointer to the argument list | |
967 | * | |
968 | * Returns: --- | |
969 | * | |
970 | * Use: Adds a new peer. | |
971 | */ | |
972 | ||
973 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
974 | { | |
de014da6 | 975 | const char *tag = 0; |
9986f0b5 | 976 | admin_addop *add; |
410c8acf | 977 | |
0ba8de86 | 978 | /* --- Set stuff up --- */ |
979 | ||
de014da6 | 980 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 981 | add->peer.name = 0; |
de014da6 | 982 | add->peer.t_ka = 0; |
983 | add->peer.tops = tun_default; | |
37941236 | 984 | |
42da2a58 | 985 | /* --- Parse options --- */ |
986 | ||
e7a4d919 MW |
987 | OPTIONS(ac, av, { |
988 | OPTARG("-background", arg, { tag = arg; }) | |
989 | OPTARG("-tunnel", arg, { | |
990 | unsigned i; | |
991 | for (i = 0;; i++) { | |
992 | if (!tunnels[i]) { | |
993 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 994 | goto fail; |
42da2a58 | 995 | } |
e7a4d919 MW |
996 | if (mystrieq(arg, tunnels[i]->name)) { |
997 | add->peer.tops = tunnels[i]; | |
42da2a58 | 998 | break; |
999 | } | |
1000 | } | |
e7a4d919 MW |
1001 | }) |
1002 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
1003 | }); | |
42da2a58 | 1004 | |
9986f0b5 MW |
1005 | /* --- Make sure someone's not got there already --- */ |
1006 | ||
e7a4d919 | 1007 | if (!*av) |
9986f0b5 | 1008 | goto bad_syntax; |
e7a4d919 MW |
1009 | if (p_find(*av)) { |
1010 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 MW |
1011 | goto fail; |
1012 | } | |
e7a4d919 MW |
1013 | add->peer.name = xstrdup(*av++); |
1014 | ac--; | |
9986f0b5 | 1015 | |
37941236 | 1016 | /* --- Crank up the resolver --- */ |
de014da6 | 1017 | |
e7a4d919 | 1018 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1019 | return; |
1020 | ||
37941236 | 1021 | /* --- Clearing up --- */ |
1022 | ||
42da2a58 | 1023 | bad_syntax: |
9986f0b5 | 1024 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1025 | fail: |
9986f0b5 | 1026 | if (add->peer.name) xfree(add->peer.name); |
37941236 | 1027 | xfree(add); |
0ba8de86 | 1028 | return; |
1029 | } | |
1030 | ||
1031 | /*----- Ping --------------------------------------------------------------*/ | |
1032 | ||
de014da6 | 1033 | /* --- @a_pingcancel@ --- * |
1034 | * | |
1035 | * Arguments: @admin_bgop *bg@ = background operation block | |
1036 | * | |
1037 | * Returns: --- | |
1038 | * | |
1039 | * Use: Cancels a running ping. | |
1040 | */ | |
1041 | ||
1042 | static void a_pingcancel(admin_bgop *bg) | |
1043 | { | |
1044 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1045 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1046 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1047 | } | |
1048 | ||
0ba8de86 | 1049 | /* --- @a_pong@ --- * |
1050 | * | |
1051 | * Arguments: @int rc@ = return code | |
de014da6 | 1052 | * @void *v@ = ping operation block |
0ba8de86 | 1053 | * |
1054 | * Returns: --- | |
1055 | * | |
1056 | * Use: Collects what happened to a ping message. | |
1057 | */ | |
1058 | ||
de014da6 | 1059 | static void a_pong(int rc, void *v) |
0ba8de86 | 1060 | { |
de014da6 | 1061 | admin_pingop *pg = v; |
0ba8de86 | 1062 | struct timeval tv; |
1063 | double millis; | |
1064 | ||
0ba8de86 | 1065 | switch (rc) { |
1066 | case PING_OK: | |
1067 | gettimeofday(&tv, 0); | |
de014da6 | 1068 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1069 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1070 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1071 | a_bgok(&pg->bg); |
0ba8de86 | 1072 | break; |
1073 | case PING_TIMEOUT: | |
f43df819 | 1074 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1075 | a_bgok(&pg->bg); |
0ba8de86 | 1076 | break; |
1077 | case PING_PEERDIED: | |
f43df819 | 1078 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1079 | a_bgok(&pg->bg); |
0ba8de86 | 1080 | break; |
1081 | default: | |
1082 | abort(); | |
1083 | } | |
060ca767 | 1084 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1085 | a_bgrelease(&pg->bg); |
0ba8de86 | 1086 | } |
1087 | ||
1088 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1089 | * | |
1090 | * Arguments: @admin *a@ = connection which requested the ping | |
1091 | * @unsigned ac@ = argument count | |
1092 | * @char *av[]@ = pointer to the argument list | |
1093 | * | |
1094 | * Returns: --- | |
1095 | * | |
1096 | * Use: Pings a peer. | |
1097 | */ | |
1098 | ||
1099 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1100 | const char *cmd, unsigned msg) | |
1101 | { | |
1102 | long t = T_PING; | |
0ba8de86 | 1103 | peer *p; |
de014da6 | 1104 | admin_pingop *pg = 0; |
1105 | const char *tag = 0; | |
0ba8de86 | 1106 | |
e7a4d919 MW |
1107 | OPTIONS(ac, av, { |
1108 | OPTARG("-background", arg, { tag = arg; }) | |
1109 | OPTTIME("-timeout", arg, { t = arg; }) | |
1110 | }); | |
1111 | if (!*av || av[1]) goto bad_syntax; | |
1112 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1113 | return; |
de014da6 | 1114 | pg = xmalloc(sizeof(*pg)); |
1115 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1116 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1117 | goto fail; | |
060ca767 | 1118 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1119 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1120 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1121 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1122 | a_bgrelease(&pg->bg); |
1123 | } | |
0ba8de86 | 1124 | return; |
1125 | ||
1126 | bad_syntax: | |
f43df819 | 1127 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1128 | fail: |
ff92ffd3 | 1129 | if (pg) xfree(pg); |
42da2a58 | 1130 | return; |
410c8acf | 1131 | } |
1132 | ||
0ba8de86 | 1133 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1134 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1135 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1136 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1137 | |
410c8acf | 1138 | /*----- Administration commands -------------------------------------------*/ |
1139 | ||
1140 | /* --- Miscellaneous commands --- */ | |
1141 | ||
3cdc3f3a | 1142 | /* --- @traceish@ --- * |
1143 | * | |
1144 | * Arguments: @admin *a@ = connection to complain on | |
1145 | * @unsigned ac@ = number of arguments | |
1146 | * @char *av[]@ = vector of arguments | |
1147 | * @const char *what@ = what we're messing with | |
1148 | * @const trace_opt *tt@ = options table | |
1149 | * @unsigned *ff@ = where the flags are | |
1150 | * | |
1151 | * Returns: Nonzero if anything changed. | |
1152 | * | |
1153 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1154 | */ | |
410c8acf | 1155 | |
3cdc3f3a | 1156 | static int traceish(admin *a, unsigned ac, char *av[], |
1157 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1158 | { |
3cdc3f3a | 1159 | int ch = 0; |
1160 | ||
410c8acf | 1161 | if (!ac || strcmp(av[0], "?") == 0) { |
1162 | const trace_opt *t; | |
3cdc3f3a | 1163 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1164 | a_info(a, "*%c%c %s", |
1165 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1166 | } |
1167 | } else { | |
1168 | unsigned sense = 1; | |
3cdc3f3a | 1169 | unsigned f = *ff; |
1170 | const trace_opt *t; | |
410c8acf | 1171 | char *p = av[0]; |
1172 | ||
1173 | while (*p) { | |
1174 | switch (*p) { | |
1175 | case '+': sense = 1; break; | |
1176 | case '-': sense = 0; break; | |
1177 | default: | |
3cdc3f3a | 1178 | for (t = tt; t->ch; t++) { |
1179 | if (t->ch == *p) { | |
1180 | if (sense) f |= t->f; | |
1181 | else f &= ~t->f; | |
410c8acf | 1182 | goto tropt_ok; |
1183 | } | |
1184 | } | |
f43df819 | 1185 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1186 | return (0); |
410c8acf | 1187 | tropt_ok:; |
1188 | break; | |
1189 | } | |
1190 | p++; | |
1191 | } | |
3cdc3f3a | 1192 | *ff = f; |
1193 | ch = 1; | |
410c8acf | 1194 | } |
3cdc3f3a | 1195 | a_ok(a); |
1196 | return (ch); | |
1197 | } | |
1198 | ||
1199 | #ifndef NTRACE | |
1200 | ||
1201 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1202 | { | |
1203 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1204 | trace_level(tr_flags); | |
410c8acf | 1205 | } |
1206 | ||
1207 | #endif | |
1208 | ||
3cdc3f3a | 1209 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
1210 | { | |
1211 | traceish(a, ac, av, "watch", w_opts, &a->f); | |
1212 | } | |
1213 | ||
3cdc3f3a | 1214 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1215 | const char *status, char *av[]) |
1216 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1217 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1218 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1219 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1220 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1221 | |
410c8acf | 1222 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
1223 | { | |
f43df819 | 1224 | a_info(a, "%u", p_port(), A_END); |
3cdc3f3a | 1225 | a_ok(a); |
410c8acf | 1226 | } |
1227 | ||
410c8acf | 1228 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1229 | { | |
1230 | if (flags & F_DAEMON) | |
f43df819 | 1231 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1232 | else { |
f43df819 | 1233 | a_notify("DAEMON", A_END); |
93bee2c4 | 1234 | if (a_stdin) |
410c8acf | 1235 | a_destroy(a_stdin); |
410c8acf | 1236 | if (u_daemon()) |
f43df819 | 1237 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1238 | else { |
410c8acf | 1239 | flags |= F_DAEMON; |
3cdc3f3a | 1240 | a_ok(a); |
93bee2c4 | 1241 | } |
410c8acf | 1242 | } |
1243 | } | |
1244 | ||
ff92ffd3 MW |
1245 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1246 | { | |
1247 | admin_bgop *bg; | |
1248 | ||
1249 | for (bg = a->bg; bg; bg = bg->next) { | |
1250 | assert(bg->tag); | |
1251 | a_info(a, "%s", bg->tag, A_END); | |
1252 | } | |
1253 | a_ok(a); | |
1254 | } | |
1255 | ||
1256 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1257 | { | |
1258 | admin_bgop *bg; | |
1259 | ||
1260 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1261 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1262 | else { | |
1263 | bg->cancel(bg); | |
1264 | a_bgrelease(bg); | |
1265 | a_ok(a); | |
1266 | } | |
1267 | } | |
1268 | ||
410c8acf | 1269 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1270 | { | |
1271 | peer *p; | |
1272 | for (p = p_first(); p; p = p_next(p)) | |
f43df819 | 1273 | a_info(a, "%s", p_name(p), A_END); |
3cdc3f3a | 1274 | a_ok(a); |
410c8acf | 1275 | } |
1276 | ||
1277 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1278 | { | |
1279 | peer *p; | |
1280 | ||
37941236 | 1281 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1282 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1283 | a_ok(a); |
1284 | } | |
410c8acf | 1285 | } |
1286 | ||
64cf2223 MW |
1287 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1288 | { | |
1289 | peer *p; | |
1290 | ||
1291 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1292 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1293 | p_setifname(p, av[1]); | |
1294 | a_ok(a); | |
1295 | } | |
1296 | } | |
1297 | ||
37941236 | 1298 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1299 | { | |
1300 | buf b; | |
1301 | ||
1302 | buf_init(&b, buf_i, PKBUFSZ); | |
1303 | c_new(&b); | |
f43df819 | 1304 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1305 | a_ok(a); |
1306 | } | |
1307 | ||
1308 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1309 | { | |
1310 | base64_ctx b64; | |
1311 | buf b; | |
1312 | dstr d = DSTR_INIT; | |
1313 | ||
1314 | base64_init(&b64); | |
1315 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1316 | base64_decode(&b64, 0, 0, &d); | |
1317 | buf_init(&b, d.buf, d.len); | |
1318 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1319 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1320 | else |
1321 | a_ok(a); | |
1322 | dstr_destroy(&d); | |
1323 | } | |
1324 | ||
1325 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1326 | { | |
1327 | peer *p; | |
1328 | base64_ctx b64; | |
1329 | dstr d = DSTR_INIT; | |
1330 | ||
1331 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1332 | base64_init(&b64); | |
1333 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1334 | base64_decode(&b64, 0, 0, &d); | |
1335 | p_greet(p, d.buf, d.len); | |
1336 | dstr_destroy(&d); | |
1337 | a_ok(a); | |
1338 | } | |
1339 | } | |
1340 | ||
410c8acf | 1341 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1342 | { | |
1343 | peer *p; | |
1344 | const addr *ad; | |
1345 | ||
37941236 | 1346 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1347 | ad = p_addr(p); |
1348 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1349 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1350 | a_ok(a); |
410c8acf | 1351 | } |
1352 | } | |
1353 | ||
060ca767 | 1354 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1355 | { | |
1356 | peer *p; | |
1357 | const peerspec *ps; | |
1358 | ||
37941236 | 1359 | if ((p = a_findpeer(a, av[0])) != 0) { |
1360 | ps = p_spec(p); | |
f43df819 MW |
1361 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
1362 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); | |
37941236 | 1363 | a_ok(a); |
060ca767 | 1364 | } |
060ca767 | 1365 | } |
1366 | ||
1367 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1368 | { | |
f43df819 MW |
1369 | a_info(a, "implementation=edgeware-tripe", A_END); |
1370 | a_info(a, "version=%s", VERSION, A_END); | |
1371 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1372 | a_ok(a); |
1373 | } | |
1374 | ||
c7053da9 | 1375 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1376 | { | |
1377 | peer *p; | |
1378 | stats *st; | |
1379 | ||
37941236 | 1380 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1381 | return; |
060ca767 | 1382 | |
1383 | st = p_stats(p); | |
f43df819 MW |
1384 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1385 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1386 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
1387 | a_info(a, "packets-in=%lu bytes-in=%lu", st->n_in, st->sz_in, A_END); | |
060ca767 | 1388 | a_info(a, "packets-out=%lu bytes-out=%lu", |
f43df819 | 1389 | st->n_out, st->sz_out, A_END); |
060ca767 | 1390 | a_info(a, "keyexch-packets-in=%lu keyexch-bytes-in=%lu", |
f43df819 | 1391 | st->n_kxin, st->sz_kxin, A_END); |
060ca767 | 1392 | a_info(a, "keyexch-packets-out=%lu keyexch-bytes-out=%lu", |
f43df819 | 1393 | st->n_kxout, st->sz_kxout, A_END); |
060ca767 | 1394 | a_info(a, "ip-packets-in=%lu ip-bytes-in=%lu", |
f43df819 | 1395 | st->n_ipin, st->sz_ipin, A_END); |
060ca767 | 1396 | a_info(a, "ip-packets-out=%lu ip-bytes-out=%lu", |
f43df819 MW |
1397 | st->n_ipout, st->sz_ipout, A_END); |
1398 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); | |
060ca767 | 1399 | a_ok(a); |
c7053da9 | 1400 | } |
1401 | ||
410c8acf | 1402 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1403 | { | |
1404 | peer *p; | |
37941236 | 1405 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1406 | p_destroy(p); |
3cdc3f3a | 1407 | a_ok(a); |
410c8acf | 1408 | } |
1409 | } | |
1410 | ||
0ba8de86 | 1411 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1412 | { | |
1413 | peer *p; | |
37941236 | 1414 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1415 | kx_start(&p->kx, 1); |
0ba8de86 | 1416 | a_ok(a); |
1417 | } | |
1418 | } | |
1419 | ||
de014da6 | 1420 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1421 | { p_keyreload(); a_ok(a); } | |
1422 | ||
410c8acf | 1423 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1424 | { | |
f43df819 | 1425 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1426 | a_ok(a); |
410c8acf | 1427 | a_quit(); |
1428 | } | |
1429 | ||
3cdc3f3a | 1430 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1431 | { | |
f43df819 | 1432 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1433 | a_ok(a); |
1434 | } | |
1435 | ||
42da2a58 | 1436 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1437 | { | |
1438 | int i; | |
1439 | for (i = 0; tunnels[i]; i++) | |
f43df819 | 1440 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1441 | a_ok(a); |
1442 | } | |
1443 | ||
410c8acf | 1444 | /* --- The command table and help --- */ |
1445 | ||
1446 | typedef struct acmd { | |
1447 | const char *name; | |
1448 | const char *help; | |
1449 | unsigned argmin, argmax; | |
1450 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1451 | } acmd; | |
1452 | ||
1453 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1454 | ||
1455 | static const acmd acmdtab[] = { | |
9986f0b5 | 1456 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1457 | { "addr", "PEER", 1, 1, acmd_addr }, |
ff92ffd3 | 1458 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1459 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1460 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1461 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1462 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1463 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1464 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1465 | { "help", 0, 0, 0, acmd_help }, | |
1466 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1467 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1468 | { "kill", "PEER", 1, 1, acmd_kill }, |
1469 | { "list", 0, 0, 0, acmd_list }, | |
1470 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1471 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1472 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1473 | { "port", 0, 0, 0, acmd_port }, | |
1474 | { "quit", 0, 0, 0, acmd_quit }, | |
1475 | { "reload", 0, 0, 0, acmd_reload }, | |
1476 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1477 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
f43df819 | 1478 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1479 | #ifndef NTRACE |
f43df819 | 1480 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1481 | #endif |
f43df819 MW |
1482 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1483 | { "version", 0, 0, 0, acmd_version }, | |
1484 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
1485 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, | |
410c8acf | 1486 | { 0, 0, 0, 0, 0 } |
1487 | }; | |
1488 | ||
1489 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1490 | { | |
1491 | const acmd *c; | |
f43df819 MW |
1492 | for (c = acmdtab; c->name; c++) { |
1493 | if (c->help) | |
1494 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
1495 | else | |
1496 | a_info(a, "%s", c->name, A_END); | |
1497 | } | |
3cdc3f3a | 1498 | a_ok(a); |
410c8acf | 1499 | } |
1500 | ||
1501 | /*----- Connection handling -----------------------------------------------*/ | |
1502 | ||
c511e1f9 | 1503 | /* --- @a_destroypending@ --- * |
410c8acf | 1504 | * |
c511e1f9 | 1505 | * Arguments: --- |
fd3cf232 | 1506 | * |
1507 | * Returns: --- | |
1508 | * | |
c511e1f9 | 1509 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 1510 | */ |
1511 | ||
c511e1f9 | 1512 | static void a_destroypending(void) |
410c8acf | 1513 | { |
c511e1f9 | 1514 | admin *a, *aa; |
de014da6 | 1515 | admin_bgop *bg, *bbg; |
de014da6 | 1516 | |
c511e1f9 | 1517 | /* --- Destroy connections marked as pending --- */ |
fd3cf232 | 1518 | |
c511e1f9 MW |
1519 | for (a = a_dead; a; a = aa) { |
1520 | aa = a->next; | |
1521 | assert(a->f & AF_DEAD); | |
1522 | ||
1523 | /* --- Report what we're doing --- */ | |
1524 | ||
1525 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", | |
1526 | a->seq); ) | |
1527 | ||
1528 | /* --- Abort any background jobs in progress --- */ | |
1529 | ||
1530 | for (bg = a->bg; bg; bg = bbg) { | |
1531 | bbg = bg->next; | |
1532 | bg->cancel(bg); | |
1533 | if (bg->tag) xfree(bg->tag); | |
1534 | xfree(bg); | |
1535 | } | |
1536 | ||
1537 | /* --- Close file descriptors and selectory --- */ | |
1538 | ||
1539 | selbuf_destroy(&a->b); | |
1540 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
1541 | close(a->w.fd); | |
1542 | if (a_stdin == a) a_stdin = 0; | |
1543 | ||
1544 | /* --- Done --- */ | |
1545 | ||
1546 | DESTROY(a); | |
410c8acf | 1547 | } |
410c8acf | 1548 | |
c511e1f9 | 1549 | /* --- All pending destruction completed --- */ |
060ca767 | 1550 | |
c511e1f9 | 1551 | a_dead = 0; |
060ca767 | 1552 | } |
1553 | ||
fd3cf232 | 1554 | /* --- @a_destroy@ --- * |
1555 | * | |
1556 | * Arguments: @admin *a@ = pointer to an admin block | |
1557 | * | |
1558 | * Returns: --- | |
1559 | * | |
1560 | * Use: Destroys an admin block. This requires a certain amount of | |
1561 | * care. | |
1562 | */ | |
1563 | ||
de014da6 | 1564 | static void freequeue(oqueue *q) |
1565 | { | |
1566 | obuf *o, *oo; | |
1567 | ||
1568 | for (o = q->hd; o; o = oo) { | |
1569 | oo = o->next; | |
1570 | xfree(o); | |
1571 | } | |
1572 | q->hd = q->tl = 0; | |
1573 | } | |
1574 | ||
fd3cf232 | 1575 | static void a_destroy(admin *a) |
1576 | { | |
fd3cf232 | 1577 | if (a->f & AF_DEAD) |
1578 | return; | |
1579 | ||
c511e1f9 MW |
1580 | if (a->next) a->next->prev = a->prev; |
1581 | if (a->prev) a->prev->next = a->next; | |
1582 | else admins = a->next; | |
fd3cf232 | 1583 | |
c511e1f9 | 1584 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 1585 | freequeue(&a->out); |
fd3cf232 | 1586 | |
c511e1f9 MW |
1587 | a->f |= AF_DEAD; |
1588 | a->next = a_dead; | |
1589 | a_dead = a; | |
fd3cf232 | 1590 | |
c511e1f9 | 1591 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 1592 | } |
1593 | ||
410c8acf | 1594 | /* --- @a_line@ --- * |
1595 | * | |
1596 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 1597 | * @size_t len@ = length of the line |
410c8acf | 1598 | * @void *vp@ = pointer to my admin block |
1599 | * | |
1600 | * Returns: --- | |
1601 | * | |
1602 | * Use: Handles a line of input. | |
1603 | */ | |
1604 | ||
3008eabf | 1605 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 1606 | { |
1607 | admin *a = vp; | |
1608 | const acmd *c; | |
3cdc3f3a | 1609 | char *av[16]; |
410c8acf | 1610 | size_t ac; |
1611 | ||
8d0c7a83 | 1612 | TIMER; |
fd3cf232 | 1613 | if (a->f & AF_DEAD) |
1614 | return; | |
410c8acf | 1615 | if (!p) { |
de014da6 | 1616 | if (!a->bg) |
1617 | a_destroy(a); | |
1618 | else { | |
1619 | a->f |= AF_CLOSE; | |
1620 | selbuf_disable(&a->b); | |
1621 | } | |
410c8acf | 1622 | return; |
1623 | } | |
3cdc3f3a | 1624 | ac = str_qsplit(p, av, 16, 0, STRF_QUOTE); |
410c8acf | 1625 | if (!ac) |
1626 | return; | |
410c8acf | 1627 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 1628 | if (mystrieq(av[0], c->name)) { |
410c8acf | 1629 | ac--; |
f43df819 MW |
1630 | if (c->argmin > ac || ac > c->argmax) { |
1631 | if (!c->help) | |
1632 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
1633 | else | |
1634 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); | |
c511e1f9 | 1635 | } else |
410c8acf | 1636 | c->func(a, ac, av + 1); |
1637 | return; | |
1638 | } | |
1639 | } | |
f43df819 | 1640 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 1641 | } |
1642 | ||
1643 | /* --- @a_create@ --- * | |
1644 | * | |
1645 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 1646 | * @unsigned f@ = initial flags to set |
410c8acf | 1647 | * |
1648 | * Returns: --- | |
1649 | * | |
1650 | * Use: Creates a new admin connection. | |
1651 | */ | |
1652 | ||
3cdc3f3a | 1653 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 1654 | { |
1655 | admin *a = CREATE(admin); | |
3cdc3f3a | 1656 | |
93bee2c4 | 1657 | T( static unsigned seq = 0; |
1658 | a->seq = seq++; ) | |
410c8acf | 1659 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 1660 | a->bg = 0; |
042d5c20 | 1661 | a->ref = 0; |
3cdc3f3a | 1662 | a->f = f; |
de014da6 | 1663 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 1664 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 1665 | if (fd_out != fd_in) |
fd3cf232 | 1666 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 1667 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 1668 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 1669 | a->out.hd = a->out.tl = 0; |
410c8acf | 1670 | a->next = admins; |
1671 | a->prev = 0; | |
de014da6 | 1672 | if (admins) admins->prev = a; |
410c8acf | 1673 | admins = a; |
1674 | } | |
1675 | ||
1676 | /* --- @a_accept@ --- * | |
1677 | * | |
1678 | * Arguments: @int fd@ = file descriptor to accept | |
1679 | * @unsigned mode@ = what to do | |
1680 | * @void *v@ = uninteresting pointer | |
1681 | * | |
1682 | * Returns: --- | |
1683 | * | |
1684 | * Use: Accepts a new admin connection. | |
1685 | */ | |
1686 | ||
1687 | static void a_accept(int fd, unsigned mode, void *v) | |
1688 | { | |
1689 | int nfd; | |
1690 | struct sockaddr_un sun; | |
1691 | size_t sz = sizeof(sun); | |
1692 | ||
1693 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 1694 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
1695 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 1696 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 1697 | return; |
1698 | } | |
3cdc3f3a | 1699 | a_create(nfd, nfd, 0); |
410c8acf | 1700 | } |
1701 | ||
c511e1f9 MW |
1702 | /* --- @a_preselect@ --- * |
1703 | * | |
1704 | * Arguments: --- | |
1705 | * | |
1706 | * Returns: --- | |
1707 | * | |
1708 | * Use: Informs the admin module that we're about to select again, | |
1709 | * and that it should do cleanup things it has delayed until a | |
1710 | * `safe' time. | |
1711 | */ | |
1712 | ||
1713 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
1714 | ||
410c8acf | 1715 | /* --- @a_daemon@ --- * |
1716 | * | |
1717 | * Arguments: --- | |
1718 | * | |
1719 | * Returns: --- | |
1720 | * | |
1721 | * Use: Informs the admin module that it's a daemon. | |
1722 | */ | |
1723 | ||
1724 | void a_daemon(void) | |
1725 | { | |
1726 | flags |= F_DAEMON; | |
1727 | } | |
1728 | ||
1729 | /* --- @a_init@ --- * | |
1730 | * | |
1731 | * Arguments: @const char *name@ = socket name to create | |
1732 | * | |
1733 | * Returns: --- | |
1734 | * | |
1735 | * Use: Creates the admin listening socket. | |
1736 | */ | |
1737 | ||
1738 | void a_init(const char *name) | |
1739 | { | |
1740 | int fd; | |
1741 | int n = 5; | |
1742 | struct sockaddr_un sun; | |
1743 | struct sigaction sa; | |
1744 | size_t sz; | |
1745 | ||
1746 | /* --- Set up the socket address --- */ | |
1747 | ||
1748 | sz = strlen(name) + 1; | |
1749 | if (sz > sizeof(sun.sun_path)) | |
1750 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
1751 | BURN(sun); | |
1752 | sun.sun_family = AF_UNIX; | |
1753 | memcpy(sun.sun_path, name, sz); | |
1754 | sz += offsetof(struct sockaddr_un, sun_path); | |
1755 | ||
1756 | /* --- Attempt to bind to the socket --- */ | |
1757 | ||
1758 | umask(0077); | |
1759 | again: | |
1760 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
1761 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
1762 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
1763 | struct stat st; | |
1764 | int e = errno; | |
1765 | if (errno != EADDRINUSE) { | |
1766 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
1767 | sun.sun_path, strerror(e)); | |
1768 | } | |
1769 | if (!n) | |
1770 | die(EXIT_FAILURE, "too many retries; giving up"); | |
1771 | n--; | |
1772 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
1773 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
1774 | sun.sun_path); | |
1775 | } | |
1776 | if (errno != ECONNREFUSED) | |
1777 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
1778 | if (stat(sun.sun_path, &st)) { | |
1779 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
1780 | sun.sun_path, strerror(errno)); | |
1781 | } | |
1782 | if (!S_ISSOCK(st.st_mode)) | |
1783 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 1784 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 1785 | unlink(sun.sun_path); |
1786 | close(fd); | |
1787 | goto again; | |
1788 | } | |
1789 | chmod(sun.sun_path, 0600); | |
1790 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); | |
1791 | if (listen(fd, 5)) | |
1792 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
1793 | ||
1794 | /* --- Listen to the socket --- */ | |
1795 | ||
1796 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
1797 | sel_addfile(&sock); | |
1798 | sockname = name; | |
1799 | bres_init(&sel); | |
1800 | T( trace_custom(a_trace, 0); | |
1801 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
1802 | flags |= F_INIT; | |
1803 | ||
1804 | /* --- Set up signal handlers --- */ | |
1805 | ||
1806 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
1807 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 1808 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 1809 | sigaction(SIGINT, 0, &sa); |
1810 | if (sa.sa_handler != SIG_IGN) | |
1811 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
1812 | } | |
1813 | ||
1814 | /*----- That's all, folks -------------------------------------------------*/ |