Commit | Line | Data |
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410c8acf | 1 | /* -*-c-*- |
2 | * | |
410c8acf | 3 | * Admin interface for configuration |
4 | * | |
5 | * (c) 2001 Straylight/Edgeware | |
6 | */ | |
7 | ||
e04c2d50 | 8 | /*----- Licensing notice --------------------------------------------------* |
410c8acf | 9 | * |
10 | * This file is part of Trivial IP Encryption (TrIPE). | |
11 | * | |
12 | * TrIPE is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
e04c2d50 | 16 | * |
410c8acf | 17 | * TrIPE is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
e04c2d50 | 21 | * |
410c8acf | 22 | * You should have received a copy of the GNU General Public License |
23 | * along with TrIPE; if not, write to the Free Software Foundation, | |
24 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | */ | |
26 | ||
410c8acf | 27 | /*----- Header files ------------------------------------------------------*/ |
28 | ||
29 | #include "tripe.h" | |
30 | ||
31 | /*----- Global variables --------------------------------------------------*/ | |
32 | ||
33 | #ifndef NTRACE | |
34 | ||
35 | const trace_opt tr_opts[] = { | |
36 | { 't', T_TUNNEL, "tunnel events" }, | |
37 | { 'r', T_PEER, "peer events" }, | |
38 | { 'a', T_ADMIN, "admin interface" }, | |
410c8acf | 39 | { 's', T_KEYSET, "symmetric keyset management" }, |
40 | { 'x', T_KEYEXCH, "key exchange" }, | |
41 | { 'm', T_KEYMGMT, "key management" }, | |
37941236 | 42 | { 'l', T_CHAL, "challenge management" }, |
388e0319 | 43 | { 'v', T_PRIVSEP, "privilege separation" }, |
37941236 | 44 | { 'p', T_PACKET, "packet contents" }, |
45 | { 'c', T_CRYPTO, "crypto details" }, | |
410c8acf | 46 | { 'A', T_ALL, "all of the above" }, |
47 | { 0, 0, 0 } | |
48 | }; | |
49 | ||
50 | unsigned tr_flags = 0; | |
51 | #endif | |
52 | ||
3cdc3f3a | 53 | static const trace_opt w_opts[] = { |
54 | { 't', AF_TRACE, "trace messages" }, | |
55 | { 'n', AF_NOTE, "asynchronous notifications" }, | |
56 | { 'w', AF_WARN, "warnings" }, | |
57 | { 'A', AF_ALLMSGS, "all of the above" }, | |
58 | { 0, 0, 0 } | |
59 | }; | |
60 | ||
410c8acf | 61 | /*----- Static variables --------------------------------------------------*/ |
62 | ||
63 | static admin *admins; | |
c511e1f9 | 64 | static admin *a_dead; |
410c8acf | 65 | static sel_file sock; |
66 | static const char *sockname; | |
be6a1b7a | 67 | static sym_table a_svcs; |
410c8acf | 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 | |
46dde080 | 74 | #define F_FOREGROUND 4u |
410c8acf | 75 | |
76 | #define T_RESOLVE SEC(30) | |
0ba8de86 | 77 | #define T_PING SEC(5) |
410c8acf | 78 | |
fd3cf232 | 79 | static void a_destroy(admin */*a*/); |
fd3cf232 | 80 | |
060ca767 | 81 | #define BOOL(x) ((x) ? "t" : "nil") |
82 | ||
fd3cf232 | 83 | /*----- Output functions --------------------------------------------------*/ |
84 | ||
85 | /* --- @trywrite@ --- * | |
86 | * | |
87 | * Arguments: @admin *a@ = pointer to an admin block | |
88 | * @const char *p@ = pointer to buffer to write | |
89 | * @size_t sz@ = size of data to write | |
90 | * | |
91 | * Returns: The number of bytes written, or less than zero on error. | |
92 | * | |
93 | * Use: Attempts to write data to a client. | |
94 | */ | |
95 | ||
96 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
97 | { | |
98 | ssize_t n, done = 0; | |
99 | ||
100 | again: | |
101 | if (!sz) | |
102 | return (done); | |
103 | n = write(a->w.fd, p, sz); | |
104 | if (n > 0) { | |
105 | done += n; | |
106 | p += n; | |
107 | sz -= n; | |
108 | goto again; | |
109 | } | |
110 | if (n < 0) { | |
111 | if (errno == EINTR) | |
112 | goto again; | |
113 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
114 | a_destroy(a); | |
f43df819 | 115 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 116 | return (-1); |
117 | } | |
118 | } | |
119 | return (done); | |
120 | } | |
121 | ||
de014da6 | 122 | /* --- @doqueue@ -- * |
fd3cf232 | 123 | * |
de014da6 | 124 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 125 | * @const char *p@ = pointer to buffer to write |
de014da6 | 126 | * @size_t sz@ = size of buffer |
fd3cf232 | 127 | * |
de014da6 | 128 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 129 | * |
de014da6 | 130 | * Use: Queues data to be written later. |
fd3cf232 | 131 | */ |
132 | ||
de014da6 | 133 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 134 | { |
fd3cf232 | 135 | obuf *o; |
de014da6 | 136 | int rc = 0; |
137 | size_t n; | |
fd3cf232 | 138 | |
de014da6 | 139 | o = q->tl; |
fd3cf232 | 140 | if (!o) |
de014da6 | 141 | rc = 1; |
fd3cf232 | 142 | else if (o->p_in < o->buf + OBUFSZ) |
143 | goto noalloc; | |
144 | ||
145 | do { | |
146 | o = xmalloc(sizeof(obuf)); | |
147 | o->next = 0; | |
148 | o->p_in = o->p_out = o->buf; | |
de014da6 | 149 | if (q->tl) |
150 | q->tl->next = o; | |
fd3cf232 | 151 | else |
de014da6 | 152 | q->hd = o; |
153 | q->tl = o; | |
fd3cf232 | 154 | |
155 | noalloc: | |
156 | n = o->buf + OBUFSZ - o->p_in; | |
157 | if (n > sz) | |
158 | n = sz; | |
159 | memcpy(o->p_in, p, n); | |
160 | o->p_in += n; | |
161 | p += n; | |
162 | sz -= n; | |
163 | } while (sz); | |
de014da6 | 164 | |
165 | return (rc); | |
166 | } | |
167 | ||
168 | /* --- @dosend@ --- * | |
169 | * | |
170 | * Arguemnts: @admin *a@ = pointer to an admin block | |
171 | * @const char *p@ = pointer to buffer to write | |
172 | * @size_t sz@ = size of data to write | |
173 | * | |
174 | * Returns: --- | |
175 | * | |
176 | * Use: Sends data to an admin client. | |
177 | */ | |
178 | ||
179 | static void dosend(admin *a, const char *p, size_t sz) | |
180 | { | |
181 | ssize_t n; | |
182 | ||
183 | if (a->f & AF_DEAD) | |
184 | return; | |
185 | if (!a->out.hd) { | |
186 | if ((n = trywrite(a, p, sz)) < 0) | |
187 | return; | |
188 | p += n; | |
189 | sz -= n; | |
190 | if (!sz) | |
191 | return; | |
192 | } | |
193 | if (doqueue(&a->out, p, sz)) | |
194 | sel_addfile(&a->w); | |
fd3cf232 | 195 | } |
196 | ||
197 | /* --- @a_flush@ --- * | |
198 | * | |
199 | * Arguments: @int fd@ = file descriptor | |
200 | * @unsigned mode@ = what's happening | |
201 | * @void *v@ = pointer to my admin block | |
202 | * | |
203 | * Returns: --- | |
204 | * | |
205 | * Use: Flushes buffers when a client is ready to read again. | |
206 | */ | |
207 | ||
208 | static void a_flush(int fd, unsigned mode, void *v) | |
209 | { | |
210 | admin *a = v; | |
211 | obuf *o, *oo; | |
212 | ssize_t n; | |
213 | ||
de014da6 | 214 | o = a->out.hd; |
fd3cf232 | 215 | while (o) { |
216 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
217 | return; | |
218 | o->p_out += n; | |
219 | if (o->p_in < o->p_out) | |
220 | break; | |
221 | oo = o; | |
222 | o = o->next; | |
223 | xfree(oo); | |
224 | } | |
de014da6 | 225 | a->out.hd = o; |
fd3cf232 | 226 | if (!o) { |
de014da6 | 227 | a->out.tl = 0; |
fd3cf232 | 228 | sel_rmfile(&a->w); |
229 | } | |
230 | } | |
231 | ||
410c8acf | 232 | /*----- Utility functions -------------------------------------------------*/ |
233 | ||
f43df819 MW |
234 | /* --- @a_vformat@ --- * |
235 | * | |
236 | * Arguments: @dstr *d@ = where to leave the formatted message | |
237 | * @const char *fmt@ = pointer to format string | |
238 | * @va_list ap@ = arguments in list | |
239 | * | |
240 | * Returns: --- | |
241 | * | |
7f73baaf MW |
242 | * Use: Main message token formatting driver. The arguments are |
243 | * interleaved formatting tokens and their parameters, finally | |
244 | * terminated by an entry @A_END@. | |
245 | * | |
246 | * Tokens recognized: | |
247 | * | |
248 | * * "*..." ... -- pretokenized @dstr_putf@-like string | |
249 | * | |
250 | * * "?ADDR" SOCKADDR -- a socket address, to be converted | |
251 | * | |
252 | * * "?B64" BUFFER SIZE -- binary data to be base64-encoded | |
253 | * | |
254 | * * "?TOKENS" VECTOR -- null-terminated vector of tokens | |
255 | * | |
256 | * * "?PEER" PEER -- peer's name | |
257 | * | |
258 | * * "?ERRNO" ERRNO -- system error code | |
259 | * | |
260 | * * "[!]..." ... -- @dstr_putf@-like string as single token | |
f43df819 MW |
261 | */ |
262 | ||
7f73baaf | 263 | void a_vformat(dstr *d, const char *fmt, va_list ap) |
f43df819 MW |
264 | { |
265 | dstr dd = DSTR_INIT; | |
266 | ||
267 | while (fmt) { | |
268 | if (*fmt == '*') { | |
6ebbf072 | 269 | if (d->len) dstr_putc(d, ' '); |
f43df819 MW |
270 | dstr_vputf(d, fmt + 1, &ap); |
271 | } else if (*fmt == '?') { | |
272 | if (strcmp(fmt, "?ADDR") == 0) { | |
273 | const addr *a = va_arg(ap, const addr *); | |
274 | switch (a->sa.sa_family) { | |
275 | case AF_INET: | |
0ed0735f MW |
276 | u_quotify(d, "INET"); |
277 | u_quotify(d, inet_ntoa(a->sin.sin_addr)); | |
f43df819 MW |
278 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); |
279 | break; | |
280 | default: | |
281 | abort(); | |
282 | } | |
283 | } else if (strcmp(fmt, "?B64") == 0) { | |
284 | const octet *p = va_arg(ap, const octet *); | |
285 | size_t n = va_arg(ap, size_t); | |
286 | base64_ctx b64; | |
287 | dstr_putc(d, ' '); | |
288 | base64_init(&b64); | |
289 | b64.indent = ""; | |
290 | b64.maxline = 0; | |
291 | base64_encode(&b64, p, n, d); | |
292 | base64_encode(&b64, 0, 0, d); | |
293 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
3331936b MW |
294 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
295 | const char *const *av = va_arg(ap, const char *const *); | |
0ed0735f | 296 | while (*av) u_quotify(d, *av++); |
f43df819 | 297 | } else if (strcmp(fmt, "?PEER") == 0) |
0ed0735f | 298 | u_quotify(d, p_name(va_arg(ap, peer *))); |
f43df819 MW |
299 | else if (strcmp(fmt, "?ERRNO") == 0) { |
300 | dstr_putf(d, " E%d", errno); | |
0ed0735f | 301 | u_quotify(d, strerror(errno)); |
f43df819 MW |
302 | } else |
303 | abort(); | |
304 | } else { | |
305 | if (*fmt == '!') fmt++; | |
306 | DRESET(&dd); | |
307 | dstr_vputf(&dd, fmt, &ap); | |
0ed0735f | 308 | u_quotify(d, dd.buf); |
f43df819 MW |
309 | } |
310 | fmt = va_arg(ap, const char *); | |
311 | } | |
312 | ||
313 | dstr_destroy(&dd); | |
314 | } | |
315 | ||
3cdc3f3a | 316 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 317 | * |
318 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 319 | * @const char *status@ = status code to report |
320 | * @const char *tag@ = tag string, or null | |
410c8acf | 321 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 322 | * @va_list ap@ = arguments in list |
410c8acf | 323 | * @...@ = other arguments |
324 | * | |
325 | * Returns: --- | |
326 | * | |
327 | * Use: Sends a message to an admin connection. | |
328 | */ | |
329 | ||
de014da6 | 330 | static void a_vwrite(admin *a, const char *status, const char *tag, |
331 | const char *fmt, va_list ap) | |
410c8acf | 332 | { |
410c8acf | 333 | dstr d = DSTR_INIT; |
f98df549 | 334 | |
de014da6 | 335 | if (tag) dstr_puts(&d, "BG"); |
336 | dstr_puts(&d, status); | |
0ed0735f | 337 | if (tag) u_quotify(&d, tag); |
f43df819 | 338 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 339 | dstr_putc(&d, '\n'); |
340 | dosend(a, d.buf, d.len); | |
341 | dstr_destroy(&d); | |
342 | } | |
343 | ||
de014da6 | 344 | static void a_write(admin *a, const char *status, const char *tag, |
345 | const char *fmt, ...) | |
3cdc3f3a | 346 | { |
347 | va_list ap; | |
f98df549 | 348 | |
410c8acf | 349 | va_start(ap, fmt); |
de014da6 | 350 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 351 | va_end(ap); |
3cdc3f3a | 352 | } |
353 | ||
354 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
355 | * | |
356 | * Arguments: @admin *a@ = connection | |
357 | * @const char *fmt@ = format string | |
358 | * @...@ = other arguments | |
359 | * | |
360 | * Returns: --- | |
361 | * | |
362 | * Use: Convenience functions for @a_write@. | |
363 | */ | |
364 | ||
f43df819 | 365 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 366 | |
367 | static void a_info(admin *a, const char *fmt, ...) | |
368 | { | |
369 | va_list ap; | |
f98df549 | 370 | |
3cdc3f3a | 371 | va_start(ap, fmt); |
de014da6 | 372 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 373 | va_end(ap); |
374 | } | |
375 | ||
376 | static void a_fail(admin *a, const char *fmt, ...) | |
377 | { | |
378 | va_list ap; | |
f98df549 | 379 | |
3cdc3f3a | 380 | va_start(ap, fmt); |
de014da6 | 381 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 382 | va_end(ap); |
383 | } | |
384 | ||
385 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
386 | * | |
387 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 388 | * @const char *status@ = status string |
3cdc3f3a | 389 | * @const char *fmt@ = pointer to format string |
de014da6 | 390 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 391 | * @size_t sz@ = size of raw string |
392 | * @va_list ap@ = arguments in list | |
393 | * @...@ = other arguments | |
394 | * | |
395 | * Returns: --- | |
396 | * | |
397 | * Use: Write a message to all admin connections matched by the given | |
398 | * filter. | |
399 | */ | |
400 | ||
de014da6 | 401 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 402 | const char *p, size_t sz) |
403 | { | |
404 | admin *a, *aa; | |
405 | dstr d = DSTR_INIT; | |
e04c2d50 | 406 | |
3cdc3f3a | 407 | if (!(flags & F_INIT)) |
408 | return; | |
de014da6 | 409 | dstr_puts(&d, status); |
410 | if (p) { | |
411 | dstr_putc(&d, ' '); | |
3cdc3f3a | 412 | dstr_putm(&d, p, sz); |
de014da6 | 413 | } |
3cdc3f3a | 414 | dstr_putc(&d, '\n'); |
415 | p = d.buf; | |
416 | sz = d.len; | |
417 | for (a = admins; a; a = aa) { | |
418 | aa = a->next; | |
419 | if ((a->f & f_and) == f_eq) | |
420 | dosend(a, d.buf, d.len); | |
421 | } | |
410c8acf | 422 | dstr_destroy(&d); |
423 | } | |
424 | ||
b9adb829 | 425 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 426 | const char *fmt, va_list ap) |
427 | { | |
428 | dstr d = DSTR_INIT; | |
429 | ||
430 | if (!(flags & F_INIT)) | |
431 | return; | |
f43df819 | 432 | a_vformat(&d, fmt, ap); |
b9adb829 | 433 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 434 | dstr_destroy(&d); |
435 | } | |
436 | ||
b9adb829 | 437 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 438 | const char *fmt, ...) |
439 | { | |
440 | va_list ap; | |
f98df549 | 441 | |
3cdc3f3a | 442 | va_start(ap, fmt); |
b9adb829 | 443 | a_valert(f_and, f_eq, status, fmt, ap); |
3cdc3f3a | 444 | va_end(ap); |
445 | } | |
3cdc3f3a | 446 | |
410c8acf | 447 | /* --- @a_warn@ --- * |
448 | * | |
449 | * Arguments: @const char *fmt@ = pointer to format string | |
450 | * @...@ = other arguments | |
451 | * | |
452 | * Returns: --- | |
453 | * | |
454 | * Use: Informs all admin connections of a warning. | |
455 | */ | |
456 | ||
457 | void a_warn(const char *fmt, ...) | |
458 | { | |
459 | va_list ap; | |
410c8acf | 460 | |
410c8acf | 461 | va_start(ap, fmt); |
3cdc3f3a | 462 | if (flags & F_INIT) |
463 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 464 | else { |
f43df819 | 465 | dstr d = DSTR_INIT; |
3cdc3f3a | 466 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
467 | a_vformat(&d, fmt, ap); |
468 | dstr_putc(&d, '\n'); | |
469 | dstr_write(&d, stderr); | |
470 | dstr_destroy(&d); | |
410c8acf | 471 | } |
3cdc3f3a | 472 | va_end(ap); |
410c8acf | 473 | } |
474 | ||
475 | /* --- @a_trace@ --- * | |
476 | * | |
477 | * Arguments: @const char *p@ = pointer to a buffer | |
478 | * @size_t sz@ = size of the buffer | |
479 | * @void *v@ = uninteresting pointer | |
480 | * | |
481 | * Returns: --- | |
482 | * | |
3cdc3f3a | 483 | * Use: Custom trace output handler. Sends trace messages to |
484 | * interested admin connections. | |
410c8acf | 485 | */ |
486 | ||
487 | #ifndef NTRACE | |
488 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 489 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 490 | #endif |
491 | ||
3cdc3f3a | 492 | /* --- @a_notify@ --- * |
493 | * | |
494 | * Arguments: @const char *fmt@ = pointer to format string | |
495 | * @...@ = other arguments | |
496 | * | |
497 | * Returns: --- | |
498 | * | |
499 | * Use: Sends a notification to interested admin connections. | |
500 | */ | |
501 | ||
502 | void a_notify(const char *fmt, ...) | |
503 | { | |
504 | va_list ap; | |
505 | ||
506 | va_start(ap, fmt); | |
507 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
508 | va_end(ap); | |
509 | } | |
510 | ||
410c8acf | 511 | /* --- @a_quit@ --- * |
512 | * | |
513 | * Arguments: --- | |
514 | * | |
515 | * Returns: --- | |
516 | * | |
517 | * Use: Shuts things down nicely. | |
518 | */ | |
519 | ||
520 | void a_quit(void) | |
521 | { | |
522 | close(sock.fd); | |
523 | unlink(sockname); | |
c8e02c8a | 524 | FOREACH_PEER(p, { p_destroy(p); }); |
388e0319 | 525 | ps_quit(); |
410c8acf | 526 | exit(0); |
527 | } | |
528 | ||
529 | /* --- @a_sigdie@ --- * | |
530 | * | |
531 | * Arguments: @int sig@ = signal number | |
532 | * @void *v@ = an uninteresting argument | |
533 | * | |
534 | * Returns: --- | |
535 | * | |
536 | * Use Shuts down on receipt of a fatal signal. | |
537 | */ | |
538 | ||
539 | static void a_sigdie(int sig, void *v) | |
540 | { | |
541 | char *p; | |
542 | char buf[20]; | |
543 | ||
544 | switch (sig) { | |
545 | case SIGTERM: p = "SIGTERM"; break; | |
546 | case SIGINT: p = "SIGINT"; break; | |
547 | default: | |
3cdc3f3a | 548 | sprintf(buf, "%i", sig); |
410c8acf | 549 | p = buf; |
550 | break; | |
551 | } | |
f43df819 | 552 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 553 | a_quit(); |
554 | } | |
555 | ||
556 | /* --- @a_sighup@ --- * | |
557 | * | |
558 | * Arguments: @int sig@ = signal number | |
559 | * @void *v@ = an uninteresting argument | |
560 | * | |
561 | * Returns: --- | |
562 | * | |
563 | * Use Logs a message about SIGHUP not being useful. | |
564 | */ | |
565 | ||
566 | static void a_sighup(int sig, void *v) | |
f98df549 | 567 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 568 | |
0ba8de86 | 569 | /* --- @a_parsetime@ --- * |
570 | * | |
571 | * Arguments; @const char *p@ = time string to parse | |
572 | * | |
573 | * Returns: Time in seconds, or @< 0@ on error. | |
574 | */ | |
575 | ||
576 | static long a_parsetime(const char *p) | |
577 | { | |
578 | char *q; | |
579 | long t = strtol(p, &q, 0); | |
580 | ||
581 | switch (*q) { | |
582 | case 'd': t *= 24; | |
583 | case 'h': t *= 60; | |
584 | case 'm': t *= 60; | |
585 | case 's': if (q[1] != 0) | |
e04c2d50 | 586 | default: t = -1; |
0ba8de86 | 587 | case 0: break; |
588 | } | |
e04c2d50 | 589 | return (t); |
0ba8de86 | 590 | } |
591 | ||
37941236 | 592 | /* --- @a_findpeer@ --- * |
593 | * | |
594 | * Arguments: @admin *a@ = admin connection | |
595 | * @const char *pn@ = peer name | |
596 | * | |
597 | * Returns: The peer, or null if not there. | |
598 | * | |
599 | * Use: Finds a peer, reporting an error if it failed. | |
600 | */ | |
601 | ||
602 | static peer *a_findpeer(admin *a, const char *pn) | |
603 | { | |
604 | peer *p; | |
605 | ||
606 | if ((p = p_find(pn)) == 0) | |
f43df819 | 607 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 608 | return (p); |
609 | } | |
610 | ||
de014da6 | 611 | /*----- Backgrounded operations -------------------------------------------*/ |
612 | ||
060ca767 | 613 | #define BGTAG(bg) \ |
614 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
615 | ||
ff92ffd3 MW |
616 | /* --- @a_bgfind@ --- * |
617 | * | |
618 | * Arguments: @admin *a@ = a client block | |
619 | * @const char *tag@ = the requested tag | |
620 | * | |
621 | * Returns: The requested background job, or null. | |
622 | */ | |
623 | ||
624 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
625 | { | |
626 | admin_bgop *bg; | |
627 | ||
628 | for (bg = a->bg; bg; bg = bg->next) { | |
629 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
630 | return (bg); | |
631 | } | |
632 | return (0); | |
633 | } | |
634 | ||
de014da6 | 635 | /* --- @a_bgrelease@ --- * |
636 | * | |
637 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
638 | * | |
639 | * Returns: --- | |
640 | * | |
641 | * Use: Removes a backgrounded operation from the queue, since | |
642 | * (presumably) it's done. | |
643 | */ | |
644 | ||
645 | static void a_bgrelease(admin_bgop *bg) | |
646 | { | |
647 | admin *a = bg->a; | |
648 | ||
060ca767 | 649 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
650 | if (bg->tag) xfree(bg->tag); | |
651 | else selbuf_enable(&a->b); | |
652 | if (bg->next) bg->next->prev = bg->prev; | |
653 | if (bg->prev) bg->prev->next = bg->next; | |
654 | else a->bg = bg->next; | |
de014da6 | 655 | xfree(bg); |
547a9c13 | 656 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 657 | } |
658 | ||
659 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
660 | * | |
661 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
662 | * @const char *fmt@ = format string | |
663 | * @...@ = other arguments | |
664 | * | |
665 | * Returns: --- | |
666 | * | |
667 | * Use: Convenience functions for @a_write@. | |
668 | */ | |
669 | ||
670 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 671 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 672 | |
673 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
674 | { | |
675 | va_list ap; | |
676 | va_start(ap, fmt); | |
677 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
678 | va_end(ap); | |
679 | } | |
680 | ||
681 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
682 | { | |
683 | va_list ap; | |
684 | va_start(ap, fmt); | |
685 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
686 | va_end(ap); | |
687 | } | |
688 | ||
689 | /* --- @a_bgadd@ --- * | |
690 | * | |
691 | * Arguments: @admin *a@ = administration connection | |
692 | * @admin_bgop *bg@ = pointer to background operation | |
693 | * @const char *tag@ = background tag, or null for foreground | |
694 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
695 | * | |
ff92ffd3 | 696 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 697 | * |
698 | * Use: Links a background job into the list. | |
699 | */ | |
700 | ||
ff92ffd3 MW |
701 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
702 | void (*cancel)(admin_bgop *)) | |
de014da6 | 703 | { |
ff92ffd3 MW |
704 | if (tag) { |
705 | if (a_bgfind(a, tag)) { | |
706 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
707 | return (-1); | |
708 | } | |
de014da6 | 709 | bg->tag = xstrdup(tag); |
ff92ffd3 | 710 | } |
de014da6 | 711 | else { |
712 | bg->tag = 0; | |
713 | selbuf_disable(&a->b); | |
714 | } | |
715 | bg->a = a; | |
716 | bg->cancel = cancel; | |
717 | bg->next = a->bg; | |
718 | bg->prev = 0; | |
060ca767 | 719 | if (a->bg) a->bg->prev = bg; |
de014da6 | 720 | a->bg = bg; |
060ca767 | 721 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 722 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 723 | return (0); |
de014da6 | 724 | } |
725 | ||
5d46c0f8 MW |
726 | /*----- Job table manipulation --------------------------------------------*/ |
727 | ||
728 | #define JOB_SHIFT 16 | |
729 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
730 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
731 | ||
732 | #define JOB_END 0xfffffffful | |
733 | ||
734 | static unsigned long a_joboffset; | |
735 | ||
736 | /* --- @a_jobidencode@ --- * | |
737 | * | |
738 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
739 | * | |
740 | * Returns: A jobid for this job, in an internal static buffer. | |
741 | * | |
742 | * Use: Constructs a jobid. In order to dissuade people from | |
743 | * predicting jobids, we obfuscate them. | |
744 | * | |
745 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
746 | * are an index into a big array. The high 16 bits are a | |
747 | * sequence number recording how many times that slot has been | |
748 | * reused. | |
749 | * | |
750 | * This `raw' jobid is then obfuscated by adding a randomly- | |
751 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
752 | * odd constant. | |
753 | */ | |
754 | ||
755 | static const char *a_jobidencode(admin_svcop *svc) | |
756 | { | |
757 | admin_jobtable *j = &svc->prov->j; | |
758 | static char buf[10]; | |
759 | unsigned long pre; | |
760 | unsigned seq; | |
761 | ||
762 | assert(svc->index <= JOB_INDEXMASK); | |
763 | seq = j->v[svc->index].seq; | |
764 | assert(seq <= JOB_SEQMASK); | |
765 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
766 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
767 | return (buf); | |
768 | } | |
769 | ||
770 | /* --- @a_jobiddecode@ --- * | |
771 | * | |
772 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
773 | * @const char *jid@ = pointer to a jobid string | |
774 | * | |
775 | * Returns: A pointer to the job's @svcop@ structure. | |
776 | */ | |
777 | ||
778 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
779 | { | |
780 | unsigned i; | |
781 | unsigned long pre; | |
782 | ||
783 | if (jid[0] != 'J') | |
784 | return (0); | |
785 | for (i = 1; i < 9; i++) { | |
786 | if (!isxdigit((unsigned char)jid[i])) | |
787 | return (0); | |
788 | } | |
789 | if (jid[9] != 0) | |
790 | return (0); | |
791 | pre = strtoul(jid + 1, 0, 16); | |
792 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
793 | i = pre & JOB_INDEXMASK; | |
794 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
795 | return (0); | |
796 | return (j->v[i].u.op); | |
797 | } | |
798 | ||
799 | /* --- @a_jobcreate@ --- * | |
800 | * | |
801 | * Arguments: @admin *a@ = pointer to administration client | |
802 | * | |
803 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
804 | * | |
805 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
806 | */ | |
807 | ||
808 | static admin_svcop *a_jobcreate(admin *a) | |
809 | { | |
810 | admin_svcop *svc; | |
811 | unsigned i; | |
812 | unsigned sz; | |
813 | admin_jobtable *j = &a->j; | |
814 | ||
815 | if (j->free != JOB_END) { | |
816 | i = j->free; | |
817 | j->free = j->v[i].u.next; | |
818 | } else { | |
819 | if (j->n == j->sz) { | |
820 | if (j->sz > JOB_INDEXMASK) | |
821 | return (0); | |
822 | sz = j->sz; | |
823 | if (!sz) { | |
824 | j->sz = 16; | |
825 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
826 | } else { | |
827 | j->sz = sz << 1; | |
828 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
829 | } | |
830 | } | |
831 | i = j->n++; | |
832 | j->v[i].seq = 0; | |
833 | } | |
834 | svc = xmalloc(sizeof(*svc)); | |
835 | svc->index = i; | |
836 | svc->prov = a; | |
837 | svc->next = j->active; | |
838 | svc->prev = 0; | |
839 | if (j->active) j->active->prev = svc; | |
840 | j->active = svc; | |
841 | j->v[i].u.op = svc; | |
842 | IF_TRACING(T_ADMIN, { | |
843 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
844 | }) | |
845 | return (svc); | |
846 | } | |
847 | ||
848 | /* --- @a_jobdestroy@ --- * | |
849 | * | |
850 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
851 | * | |
852 | * Returns: --- | |
853 | * | |
854 | * Use: Frees up a completed (or cancelled) job. | |
855 | */ | |
856 | ||
857 | static void a_jobdestroy(admin_svcop *svc) | |
858 | { | |
859 | admin *a = svc->prov; | |
860 | admin_jobtable *j = &a->j; | |
861 | unsigned i = svc->index; | |
862 | ||
863 | IF_TRACING(T_ADMIN, { | |
864 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
865 | }) | |
866 | assert(j->v[i].u.op = svc); | |
867 | j->v[i].u.next = j->free; | |
868 | j->v[i].seq++; | |
869 | j->free = i; | |
870 | if (svc->next) svc->next->prev = svc->prev; | |
871 | if (svc->prev) svc->prev->next = svc->next; | |
872 | else j->active = svc->next; | |
873 | } | |
874 | ||
875 | /* --- @a_jobtableinit@ --- * | |
876 | * | |
877 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
878 | * | |
879 | * Returns: --- | |
880 | * | |
881 | * Use: Initializes a job table. | |
882 | */ | |
883 | ||
884 | static void a_jobtableinit(admin_jobtable *j) | |
885 | { | |
886 | if (!a_joboffset) | |
887 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
888 | j->n = j->sz = 0; | |
889 | j->active = 0; | |
890 | j->free = JOB_END; | |
891 | j->v = 0; | |
892 | } | |
893 | ||
894 | /* --- @a_jobtablefinal@ --- * | |
895 | * | |
896 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
897 | * | |
898 | * Returns: --- | |
899 | * | |
900 | * Use: Closes down a job table. | |
901 | */ | |
902 | ||
903 | static void a_jobtablefinal(admin_jobtable *j) | |
904 | { | |
905 | admin_svcop *svc, *ssvc; | |
906 | ||
907 | for (svc = j->active; svc; svc = ssvc) { | |
908 | ssvc = svc->next; | |
909 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
910 | a_bgrelease(&svc->bg); | |
911 | } | |
912 | if (j->v) xfree(j->v); | |
913 | } | |
914 | ||
be6a1b7a MW |
915 | /*----- Services infrastructure -------------------------------------------*/ |
916 | ||
917 | /* --- @a_svcfind@ --- * | |
918 | * | |
919 | * Arguments: @admin *a@ = the requesting client | |
920 | * @const char *name@ = service name wanted | |
921 | * | |
922 | * Returns: The service requested, or null. | |
923 | * | |
924 | * Use: Finds a service; reports an error if the service couldn't be | |
925 | * found. | |
926 | */ | |
927 | ||
928 | static admin_service *a_svcfind(admin *a, const char *name) | |
929 | { | |
930 | admin_service *svc; | |
931 | ||
932 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
933 | a_fail(a, "unknown-service", "%s", name, A_END); | |
934 | return (0); | |
935 | } | |
936 | return (svc); | |
937 | } | |
938 | ||
939 | /* --- @a_svcunlink@ --- * | |
940 | * | |
941 | * Arguments: @admin_service *svc@ = pointer to service structure | |
942 | * | |
943 | * Returns: --- | |
944 | * | |
945 | * Use: Unlinks the service from its provider, without issuing a | |
946 | * message or freeing the structure. The version string is | |
947 | * freed, however. | |
948 | */ | |
949 | ||
950 | static void a_svcunlink(admin_service *svc) | |
951 | { | |
952 | if (svc->next) | |
953 | svc->next->prev = svc->prev; | |
954 | if (svc->prev) | |
955 | svc->prev->next = svc->next; | |
956 | else | |
957 | svc->prov->svcs = svc->next; | |
958 | xfree(svc->version); | |
959 | } | |
960 | ||
961 | /* --- @a_svcrelease@ --- * | |
962 | * | |
963 | * Arguments: @admin_service *svc@ = pointer to service structure | |
964 | * | |
965 | * Returns: --- | |
966 | * | |
967 | * Use: Releases a service and frees its structure. | |
968 | */ | |
969 | ||
970 | static void a_svcrelease(admin_service *svc) | |
971 | { | |
972 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
973 | a_svcunlink(svc); | |
974 | sym_remove(&a_svcs, svc); | |
de014da6 | 975 | } |
976 | ||
37941236 | 977 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 978 | |
37941236 | 979 | /* --- @a_resolved@ --- * |
de014da6 | 980 | * |
37941236 | 981 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
982 | * @void *v@ = pointer to resolver operation | |
de014da6 | 983 | * |
984 | * Returns: --- | |
985 | * | |
37941236 | 986 | * Use: Handles a completed name resolution. |
de014da6 | 987 | */ |
988 | ||
37941236 | 989 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 990 | { |
37941236 | 991 | admin_resop *r = v; |
992 | ||
993 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
994 | TIMER; | |
995 | if (!h) { | |
f43df819 | 996 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 997 | r->func(r, ARES_FAIL); |
998 | } else { | |
999 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
1000 | r->func(r, ARES_OK); | |
1001 | } | |
1002 | sel_rmtimer(&r->t); | |
1003 | xfree(r->addr); | |
1004 | a_bgrelease(&r->bg); | |
e04c2d50 | 1005 | } |
de014da6 | 1006 | |
37941236 | 1007 | /* --- @a_restimer@ --- * |
de014da6 | 1008 | * |
37941236 | 1009 | * Arguments: @struct timeval *tv@ = timer |
1010 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1011 | * |
1012 | * Returns: --- | |
1013 | * | |
37941236 | 1014 | * Use: Times out a resolver. |
de014da6 | 1015 | */ |
1016 | ||
37941236 | 1017 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 1018 | { |
37941236 | 1019 | admin_resop *r = v; |
1020 | ||
1021 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1022 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1023 | r->func(r, ARES_FAIL); |
1024 | bres_abort(&r->r); | |
1025 | xfree(r->addr); | |
1026 | a_bgrelease(&r->bg); | |
de014da6 | 1027 | } |
1028 | ||
37941236 | 1029 | /* --- @a_rescancel@ --- * |
de014da6 | 1030 | * |
37941236 | 1031 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1032 | * |
1033 | * Returns: --- | |
1034 | * | |
37941236 | 1035 | * Use: Cancels an add operation. |
de014da6 | 1036 | */ |
1037 | ||
37941236 | 1038 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1039 | { |
37941236 | 1040 | admin_resop *r = (admin_resop *)bg; |
1041 | ||
1042 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1043 | r->func(r, ARES_FAIL); | |
1044 | sel_rmtimer(&r->t); | |
1045 | xfree(r->addr); | |
1046 | bres_abort(&r->r); | |
de014da6 | 1047 | } |
37941236 | 1048 | |
1049 | /* --- @a_resolve@ --- * | |
410c8acf | 1050 | * |
37941236 | 1051 | * Arguments: @admin *a@ = administration connection |
1052 | * @admin_resop *r@ = resolver operation to run | |
1053 | * @const char *tag@ = background operation tag | |
1054 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1055 | * @unsigned ac@ = number of remaining arguments | |
1056 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1057 | * |
1058 | * Returns: --- | |
1059 | * | |
37941236 | 1060 | * Use: Cranks up a resolver job. |
410c8acf | 1061 | */ |
1062 | ||
37941236 | 1063 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1064 | void (*func)(struct admin_resop *, int), | |
1065 | unsigned ac, char *av[]) | |
410c8acf | 1066 | { |
37941236 | 1067 | struct timeval tv; |
1068 | unsigned long pt; | |
1069 | char *p; | |
1070 | int i = 0; | |
fd3cf232 | 1071 | |
37941236 | 1072 | /* --- Fill in the easy bits of address --- */ |
1073 | ||
452bf3f6 | 1074 | r->bg.tag = "<starting>"; |
37941236 | 1075 | r->addr = 0; |
1076 | r->func = func; | |
1077 | if (mystrieq(av[i], "inet")) i++; | |
165efde7 MW |
1078 | if (ac - i != 1 && ac - i != 2) { |
1079 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS [PORT]", A_END); | |
37941236 | 1080 | goto fail; |
1081 | } | |
1082 | r->sa.sin.sin_family = AF_INET; | |
1083 | r->sasz = sizeof(r->sa.sin); | |
1084 | r->addr = xstrdup(av[i]); | |
6f88042a | 1085 | if (!av[i + 1]) |
165efde7 MW |
1086 | pt = TRIPE_PORT; |
1087 | else { | |
1088 | pt = strtoul(av[i + 1], &p, 0); | |
1089 | if (*p) { | |
1090 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1091 | if (!s) { | |
1092 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); | |
1093 | goto fail; | |
1094 | } | |
1095 | pt = ntohs(s->s_port); | |
37941236 | 1096 | } |
410c8acf | 1097 | } |
37941236 | 1098 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1099 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1100 | goto fail; |
1101 | } | |
1102 | r->sa.sin.sin_port = htons(pt); | |
1103 | ||
1104 | /* --- Report backgrounding --- * | |
1105 | * | |
1106 | * Do this for consistency of interface, even if we're going to get the | |
1107 | * answer straight away. | |
1108 | */ | |
1109 | ||
ff92ffd3 MW |
1110 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1111 | goto fail; | |
37941236 | 1112 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
1113 | a->seq, BGTAG(r), r->addr); ) | |
1114 | ||
1115 | /* --- If the name is numeric, do it the easy way --- */ | |
e04c2d50 | 1116 | |
37941236 | 1117 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { |
1118 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1119 | func(r, ARES_OK); | |
1120 | xfree(r->addr); | |
1121 | a_bgrelease(&r->bg); | |
1122 | return; | |
1123 | } | |
1124 | ||
1125 | /* --- Store everything for later and crank up the resolver --- */ | |
1126 | ||
1127 | gettimeofday(&tv, 0); | |
1128 | tv.tv_sec += T_RESOLVE; | |
1129 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
1130 | bres_byname(&r->r, r->addr, a_resolved, r); | |
1131 | return; | |
1132 | ||
1133 | fail: | |
1134 | func(r, ARES_FAIL); | |
1135 | if (r->addr) xfree(r->addr); | |
1136 | xfree(r); | |
410c8acf | 1137 | } |
1138 | ||
e7a4d919 MW |
1139 | /*----- Option parsing ----------------------------------------------------*/ |
1140 | ||
1141 | #define OPTIONS(argc, argv, guts) do { \ | |
1142 | char **o_av = argv; \ | |
1143 | for (;; o_av++) { \ | |
1144 | if (!*o_av) \ | |
1145 | break; \ | |
1146 | if (mystrieq(*o_av, "--")) { \ | |
1147 | o_av++; \ | |
1148 | break; \ | |
1149 | } \ | |
1150 | guts \ | |
1151 | if (**o_av == '-') \ | |
1152 | goto bad_syntax; \ | |
1153 | break; \ | |
1154 | } \ | |
1155 | argc -= o_av - argv; \ | |
1156 | argv = o_av; \ | |
1157 | } while (0) | |
1158 | ||
1159 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1160 | ||
1161 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1162 | const char *arg; \ | |
1163 | arg = *++o_av; \ | |
1164 | if (!arg) goto bad_syntax; \ | |
1165 | guts \ | |
1166 | }) | |
1167 | ||
1168 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1169 | long arg; \ | |
1170 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1171 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1172 | goto fail; \ | |
1173 | } \ | |
1174 | guts \ | |
1175 | }) | |
1176 | ||
37941236 | 1177 | /*----- Adding peers ------------------------------------------------------*/ |
1178 | ||
1179 | /* --- @a_doadd@ --- * | |
410c8acf | 1180 | * |
37941236 | 1181 | * Arguments: @admin_resop *r@ = resolver operation |
1182 | * @int rc@ = how it worked | |
410c8acf | 1183 | * |
1184 | * Returns: --- | |
1185 | * | |
37941236 | 1186 | * Use: Handles a completed resolution. |
410c8acf | 1187 | */ |
1188 | ||
37941236 | 1189 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1190 | { |
37941236 | 1191 | admin_addop *add = (admin_addop *)r; |
1192 | ||
1193 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1194 | ||
1195 | if (rc == ARES_OK) { | |
1196 | add->peer.sasz = add->r.sasz; | |
1197 | add->peer.sa = add->r.sa; | |
c8e02c8a MW |
1198 | if (p_findbyaddr(&add->r.sa)) |
1199 | a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END); | |
1200 | else if (p_find(add->peer.name)) | |
f43df819 | 1201 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 1202 | else if (!p_create(&add->peer)) |
f43df819 | 1203 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 1204 | else |
1205 | a_bgok(&add->r.bg); | |
1206 | } | |
de014da6 | 1207 | |
48b84569 | 1208 | if (add->peer.tag) xfree(add->peer.tag); |
37941236 | 1209 | xfree(add->peer.name); |
410c8acf | 1210 | } |
1211 | ||
1212 | /* --- @acmd_add@ --- * | |
1213 | * | |
1214 | * Arguments: @admin *a@ = connection which requested the addition | |
1215 | * @unsigned ac@ = argument count | |
1216 | * @char *av[]@ = pointer to the argument list | |
1217 | * | |
1218 | * Returns: --- | |
1219 | * | |
1220 | * Use: Adds a new peer. | |
1221 | */ | |
1222 | ||
1223 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
1224 | { | |
de014da6 | 1225 | const char *tag = 0; |
9986f0b5 | 1226 | admin_addop *add; |
410c8acf | 1227 | |
0ba8de86 | 1228 | /* --- Set stuff up --- */ |
1229 | ||
de014da6 | 1230 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 1231 | add->peer.name = 0; |
48b84569 | 1232 | add->peer.tag = 0; |
de014da6 | 1233 | add->peer.t_ka = 0; |
1234 | add->peer.tops = tun_default; | |
010e6f63 | 1235 | add->peer.kxf = 0; |
37941236 | 1236 | |
42da2a58 | 1237 | /* --- Parse options --- */ |
1238 | ||
e7a4d919 MW |
1239 | OPTIONS(ac, av, { |
1240 | OPTARG("-background", arg, { tag = arg; }) | |
1241 | OPTARG("-tunnel", arg, { | |
1242 | unsigned i; | |
1243 | for (i = 0;; i++) { | |
1244 | if (!tunnels[i]) { | |
1245 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 1246 | goto fail; |
42da2a58 | 1247 | } |
e7a4d919 MW |
1248 | if (mystrieq(arg, tunnels[i]->name)) { |
1249 | add->peer.tops = tunnels[i]; | |
42da2a58 | 1250 | break; |
1251 | } | |
1252 | } | |
e7a4d919 MW |
1253 | }) |
1254 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
010e6f63 | 1255 | OPT("-cork", { add->peer.kxf |= KXF_CORK; }) |
48b84569 MW |
1256 | OPTARG("-key", arg, { |
1257 | if (add->peer.tag) | |
1258 | xfree(add->peer.tag); | |
1259 | add->peer.tag = xstrdup(arg); | |
1260 | }) | |
e7a4d919 | 1261 | }); |
42da2a58 | 1262 | |
9986f0b5 MW |
1263 | /* --- Make sure someone's not got there already --- */ |
1264 | ||
bcf3764a | 1265 | if (!av[0] || !av[1]) |
9986f0b5 | 1266 | goto bad_syntax; |
e7a4d919 MW |
1267 | if (p_find(*av)) { |
1268 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1269 | goto fail; |
42da2a58 | 1270 | } |
e7a4d919 MW |
1271 | add->peer.name = xstrdup(*av++); |
1272 | ac--; | |
42da2a58 | 1273 | |
37941236 | 1274 | /* --- Crank up the resolver --- */ |
de014da6 | 1275 | |
e7a4d919 | 1276 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1277 | return; |
1278 | ||
37941236 | 1279 | /* --- Clearing up --- */ |
1280 | ||
42da2a58 | 1281 | bad_syntax: |
9986f0b5 | 1282 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1283 | fail: |
9986f0b5 | 1284 | if (add->peer.name) xfree(add->peer.name); |
48b84569 | 1285 | if (add->peer.tag) xfree(add->peer.tag); |
37941236 | 1286 | xfree(add); |
0ba8de86 | 1287 | return; |
1288 | } | |
1289 | ||
1290 | /*----- Ping --------------------------------------------------------------*/ | |
1291 | ||
de014da6 | 1292 | /* --- @a_pingcancel@ --- * |
1293 | * | |
1294 | * Arguments: @admin_bgop *bg@ = background operation block | |
1295 | * | |
1296 | * Returns: --- | |
1297 | * | |
1298 | * Use: Cancels a running ping. | |
1299 | */ | |
1300 | ||
1301 | static void a_pingcancel(admin_bgop *bg) | |
1302 | { | |
1303 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1304 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1305 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1306 | } | |
1307 | ||
0ba8de86 | 1308 | /* --- @a_pong@ --- * |
1309 | * | |
1310 | * Arguments: @int rc@ = return code | |
de014da6 | 1311 | * @void *v@ = ping operation block |
0ba8de86 | 1312 | * |
1313 | * Returns: --- | |
1314 | * | |
1315 | * Use: Collects what happened to a ping message. | |
1316 | */ | |
1317 | ||
de014da6 | 1318 | static void a_pong(int rc, void *v) |
0ba8de86 | 1319 | { |
de014da6 | 1320 | admin_pingop *pg = v; |
0ba8de86 | 1321 | struct timeval tv; |
1322 | double millis; | |
1323 | ||
0ba8de86 | 1324 | switch (rc) { |
1325 | case PING_OK: | |
1326 | gettimeofday(&tv, 0); | |
de014da6 | 1327 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1328 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1329 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1330 | a_bgok(&pg->bg); |
0ba8de86 | 1331 | break; |
1332 | case PING_TIMEOUT: | |
f43df819 | 1333 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1334 | a_bgok(&pg->bg); |
0ba8de86 | 1335 | break; |
1336 | case PING_PEERDIED: | |
f43df819 | 1337 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1338 | a_bgok(&pg->bg); |
0ba8de86 | 1339 | break; |
1340 | default: | |
1341 | abort(); | |
1342 | } | |
060ca767 | 1343 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1344 | a_bgrelease(&pg->bg); |
0ba8de86 | 1345 | } |
1346 | ||
1347 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1348 | * | |
1349 | * Arguments: @admin *a@ = connection which requested the ping | |
1350 | * @unsigned ac@ = argument count | |
1351 | * @char *av[]@ = pointer to the argument list | |
1352 | * | |
1353 | * Returns: --- | |
1354 | * | |
1355 | * Use: Pings a peer. | |
1356 | */ | |
1357 | ||
1358 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1359 | const char *cmd, unsigned msg) | |
1360 | { | |
1361 | long t = T_PING; | |
0ba8de86 | 1362 | peer *p; |
de014da6 | 1363 | admin_pingop *pg = 0; |
1364 | const char *tag = 0; | |
0ba8de86 | 1365 | |
e7a4d919 MW |
1366 | OPTIONS(ac, av, { |
1367 | OPTARG("-background", arg, { tag = arg; }) | |
1368 | OPTTIME("-timeout", arg, { t = arg; }) | |
1369 | }); | |
1370 | if (!*av || av[1]) goto bad_syntax; | |
1371 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1372 | return; |
de014da6 | 1373 | pg = xmalloc(sizeof(*pg)); |
1374 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1375 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1376 | goto fail; | |
060ca767 | 1377 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1378 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1379 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1380 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1381 | a_bgrelease(&pg->bg); |
1382 | } | |
0ba8de86 | 1383 | return; |
e04c2d50 | 1384 | |
0ba8de86 | 1385 | bad_syntax: |
f43df819 | 1386 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1387 | fail: |
ff92ffd3 | 1388 | if (pg) xfree(pg); |
42da2a58 | 1389 | return; |
410c8acf | 1390 | } |
1391 | ||
0ba8de86 | 1392 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1393 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1394 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1395 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1396 | |
be6a1b7a MW |
1397 | /*----- Service commands --------------------------------------------------*/ |
1398 | ||
1399 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1400 | { | |
1401 | admin_service *svc; | |
1402 | unsigned f; | |
1403 | ||
1404 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1405 | if (f) { | |
1406 | if (versioncmp(av[1], svc->version) <= 0) { | |
1407 | a_fail(a, | |
1408 | "service-exists", | |
1409 | "%s", SYM_NAME(svc), | |
1410 | "%s", svc->version, | |
1411 | A_END); | |
1412 | return; | |
1413 | } | |
1414 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1415 | a_svcunlink(svc); | |
1416 | } | |
1417 | svc->prov = a; | |
1418 | svc->version = xstrdup(av[1]); | |
1419 | svc->next = a->svcs; | |
1420 | svc->prev = 0; | |
1421 | if (a->svcs) a->svcs->prev = svc; | |
1422 | a->svcs = svc; | |
1423 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1424 | a_ok(a); | |
1425 | } | |
1426 | ||
1427 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1428 | { | |
1429 | admin_service *svc; | |
1430 | ||
1431 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1432 | return; | |
1433 | if (svc->prov != a) { | |
1434 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1435 | return; | |
1436 | } | |
1437 | a_svcrelease(svc); | |
1438 | a_ok(a); | |
1439 | } | |
1440 | ||
1441 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1442 | { | |
1443 | admin_service *svc; | |
1444 | ||
1445 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1446 | return; | |
1447 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1448 | a_fail(a, "service-too-old", | |
1449 | "%s", SYM_NAME(svc), | |
1450 | "%s", svc->version, | |
1451 | A_END); | |
1452 | return; | |
1453 | } | |
1454 | a_ok(a); | |
1455 | } | |
1456 | ||
1457 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1458 | { | |
1459 | admin_service *svc; | |
1460 | ||
1461 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1462 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1463 | a_ok(a); | |
1464 | } | |
1465 | } | |
1466 | ||
1467 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1468 | { | |
1469 | admin_service *svc; | |
1470 | sym_iter i; | |
1471 | ||
1472 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1473 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1474 | a_ok(a); | |
1475 | } | |
1476 | ||
ef2f29c9 MW |
1477 | static void a_canceljob(admin_bgop *bg) |
1478 | { | |
1479 | admin_svcop *svc = (admin_svcop *)bg; | |
1480 | ||
1481 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1482 | a_jobdestroy(svc); | |
1483 | } | |
1484 | ||
1485 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1486 | { | |
1487 | const char *tag = 0; | |
1488 | admin_service *svc; | |
1489 | admin_svcop *svcop; | |
1490 | const char *ver = 0; | |
1491 | dstr d = DSTR_INIT; | |
1492 | ||
1493 | OPTIONS(ac, av, { | |
1494 | OPTARG("-background", arg, { tag = arg; }) | |
1495 | OPTARG("-version", arg, { ver = arg; }) | |
1496 | }); | |
1497 | if (!*av) goto bad_syntax; | |
1498 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1499 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1500 | a_fail(a, "service-too-old", | |
1501 | "%s", SYM_NAME(svc), | |
1502 | "%s", svc->version, | |
1503 | A_END); | |
1504 | goto fail; | |
1505 | } | |
1506 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1507 | a_fail(a, "provider-overloaded", A_END); | |
1508 | goto fail; | |
1509 | } | |
1510 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1511 | a_jobdestroy(svcop); | |
1512 | goto fail; | |
1513 | } | |
1514 | a_write(svc->prov, "SVCJOB", 0, | |
1515 | "%s", a_jobidencode(svcop), | |
1516 | "?TOKENS", av, | |
1517 | A_END); | |
1518 | goto done; | |
1519 | ||
1520 | bad_syntax: | |
1521 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1522 | fail: | |
1523 | done: | |
1524 | dstr_destroy(&d); | |
1525 | return; | |
1526 | } | |
1527 | ||
1528 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1529 | { | |
1530 | admin_svcop *svc; | |
1531 | ||
1532 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1533 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1534 | return; | |
1535 | } | |
1536 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1537 | if (donep) { | |
1538 | a_jobdestroy(svc); | |
1539 | a_bgrelease(&svc->bg); | |
1540 | } | |
1541 | a_ok(a); | |
1542 | } | |
1543 | ||
1544 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1545 | { a_replycmd(a, "OK", 1, av); } | |
1546 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1547 | { a_replycmd(a, "INFO", 0, av); } | |
1548 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1549 | { a_replycmd(a, "FAIL", 1, av); } | |
1550 | ||
410c8acf | 1551 | /*----- Administration commands -------------------------------------------*/ |
1552 | ||
1553 | /* --- Miscellaneous commands --- */ | |
1554 | ||
3cdc3f3a | 1555 | /* --- @traceish@ --- * |
1556 | * | |
1557 | * Arguments: @admin *a@ = connection to complain on | |
1558 | * @unsigned ac@ = number of arguments | |
1559 | * @char *av[]@ = vector of arguments | |
1560 | * @const char *what@ = what we're messing with | |
1561 | * @const trace_opt *tt@ = options table | |
1562 | * @unsigned *ff@ = where the flags are | |
1563 | * | |
1564 | * Returns: Nonzero if anything changed. | |
1565 | * | |
1566 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1567 | */ | |
410c8acf | 1568 | |
3cdc3f3a | 1569 | static int traceish(admin *a, unsigned ac, char *av[], |
1570 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1571 | { |
3cdc3f3a | 1572 | int ch = 0; |
1573 | ||
410c8acf | 1574 | if (!ac || strcmp(av[0], "?") == 0) { |
1575 | const trace_opt *t; | |
3cdc3f3a | 1576 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1577 | a_info(a, "*%c%c %s", |
1578 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1579 | } |
1580 | } else { | |
1581 | unsigned sense = 1; | |
3cdc3f3a | 1582 | unsigned f = *ff; |
1583 | const trace_opt *t; | |
410c8acf | 1584 | char *p = av[0]; |
1585 | ||
1586 | while (*p) { | |
1587 | switch (*p) { | |
1588 | case '+': sense = 1; break; | |
1589 | case '-': sense = 0; break; | |
1590 | default: | |
3cdc3f3a | 1591 | for (t = tt; t->ch; t++) { |
1592 | if (t->ch == *p) { | |
1593 | if (sense) f |= t->f; | |
1594 | else f &= ~t->f; | |
410c8acf | 1595 | goto tropt_ok; |
1596 | } | |
1597 | } | |
f43df819 | 1598 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1599 | return (0); |
e04c2d50 | 1600 | tropt_ok:; |
410c8acf | 1601 | break; |
1602 | } | |
1603 | p++; | |
1604 | } | |
3cdc3f3a | 1605 | *ff = f; |
1606 | ch = 1; | |
410c8acf | 1607 | } |
3cdc3f3a | 1608 | a_ok(a); |
1609 | return (ch); | |
1610 | } | |
1611 | ||
1612 | #ifndef NTRACE | |
1613 | ||
1614 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1615 | { | |
1616 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1617 | trace_level(tr_flags); | |
410c8acf | 1618 | } |
1619 | ||
1620 | #endif | |
1621 | ||
3cdc3f3a | 1622 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1623 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1624 | |
3cdc3f3a | 1625 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1626 | const char *status, char *av[]) |
1627 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1628 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1629 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1630 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1631 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1632 | |
410c8acf | 1633 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1634 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1635 | |
410c8acf | 1636 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1637 | { | |
1638 | if (flags & F_DAEMON) | |
f43df819 | 1639 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1640 | else { |
f43df819 | 1641 | a_notify("DAEMON", A_END); |
93bee2c4 | 1642 | if (a_stdin) |
410c8acf | 1643 | a_destroy(a_stdin); |
19dd2531 | 1644 | if (daemonize()) |
f43df819 | 1645 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1646 | else { |
410c8acf | 1647 | flags |= F_DAEMON; |
3cdc3f3a | 1648 | a_ok(a); |
93bee2c4 | 1649 | } |
410c8acf | 1650 | } |
1651 | } | |
1652 | ||
ff92ffd3 MW |
1653 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1654 | { | |
1655 | admin_bgop *bg; | |
1656 | ||
1657 | for (bg = a->bg; bg; bg = bg->next) { | |
1658 | assert(bg->tag); | |
1659 | a_info(a, "%s", bg->tag, A_END); | |
1660 | } | |
1661 | a_ok(a); | |
1662 | } | |
1663 | ||
1664 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1665 | { | |
1666 | admin_bgop *bg; | |
1667 | ||
1668 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1669 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1670 | else { | |
1671 | bg->cancel(bg); | |
1672 | a_bgrelease(bg); | |
1673 | a_ok(a); | |
1674 | } | |
1675 | } | |
1676 | ||
449991a3 MW |
1677 | static void acmd_algs(admin *a, unsigned ac, char *av[]) |
1678 | { | |
1679 | a_info(a, | |
1680 | "kx-group=%s", gg->ops->name, | |
1681 | "kx-group-order-bits=%lu", (unsigned long)mp_bits(gg->r), | |
1682 | "kx-group-elt-bits=%lu", (unsigned long)gg->nbits, | |
1683 | A_END); | |
1684 | a_info(a, | |
1685 | "hash=%s", algs.h->name, | |
1686 | "mgf=%s", algs.mgf->name, | |
1687 | "hash-sz=%lu", (unsigned long)algs.h->hashsz, | |
1688 | A_END); | |
1689 | a_info(a, | |
1690 | "cipher=%s", algs.c->name, | |
1691 | "cipher-keysz=%lu", (unsigned long)algs.cksz, | |
1692 | "cipher-blksz=%lu", (unsigned long)algs.c->blksz, | |
1693 | A_END); | |
1694 | a_info(a, | |
1695 | "cipher-data-limit=%lu", (unsigned long)algs.expsz, | |
1696 | A_END); | |
1697 | a_info(a, | |
1698 | "mac=%s", algs.m->name, | |
1699 | "mac-keysz=%lu", (unsigned long)algs.mksz, | |
1700 | "mac-tagsz=%lu", (unsigned long)algs.tagsz, | |
1701 | A_END); | |
1702 | a_ok(a); | |
1703 | } | |
1704 | ||
410c8acf | 1705 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1706 | { | |
c8e02c8a | 1707 | FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); }); |
3cdc3f3a | 1708 | a_ok(a); |
410c8acf | 1709 | } |
1710 | ||
1711 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1712 | { | |
1713 | peer *p; | |
1714 | ||
37941236 | 1715 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1716 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1717 | a_ok(a); |
1718 | } | |
410c8acf | 1719 | } |
1720 | ||
64cf2223 MW |
1721 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1722 | { | |
1723 | peer *p; | |
1724 | ||
1725 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1726 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1727 | p_setifname(p, av[1]); | |
1728 | a_ok(a); | |
e04c2d50 | 1729 | } |
64cf2223 MW |
1730 | } |
1731 | ||
37941236 | 1732 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1733 | { | |
1734 | buf b; | |
1735 | ||
1736 | buf_init(&b, buf_i, PKBUFSZ); | |
1737 | c_new(&b); | |
f43df819 | 1738 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1739 | a_ok(a); |
1740 | } | |
1741 | ||
1742 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1743 | { | |
1744 | base64_ctx b64; | |
1745 | buf b; | |
1746 | dstr d = DSTR_INIT; | |
1747 | ||
1748 | base64_init(&b64); | |
1749 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1750 | base64_decode(&b64, 0, 0, &d); | |
1751 | buf_init(&b, d.buf, d.len); | |
1752 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1753 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1754 | else |
1755 | a_ok(a); | |
1756 | dstr_destroy(&d); | |
1757 | } | |
1758 | ||
1759 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1760 | { | |
1761 | peer *p; | |
1762 | base64_ctx b64; | |
1763 | dstr d = DSTR_INIT; | |
1764 | ||
1765 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1766 | base64_init(&b64); | |
1767 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1768 | base64_decode(&b64, 0, 0, &d); | |
1769 | p_greet(p, d.buf, d.len); | |
1770 | dstr_destroy(&d); | |
1771 | a_ok(a); | |
1772 | } | |
1773 | } | |
1774 | ||
410c8acf | 1775 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1776 | { | |
1777 | peer *p; | |
1778 | const addr *ad; | |
1779 | ||
37941236 | 1780 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1781 | ad = p_addr(p); |
1782 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1783 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1784 | a_ok(a); |
410c8acf | 1785 | } |
1786 | } | |
1787 | ||
060ca767 | 1788 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1789 | { | |
1790 | peer *p; | |
1791 | const peerspec *ps; | |
1792 | ||
37941236 | 1793 | if ((p = a_findpeer(a, av[0])) != 0) { |
1794 | ps = p_spec(p); | |
f43df819 | 1795 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
e55761b1 | 1796 | a_info(a, "key=%s", p_tag(p), A_END); |
f43df819 | 1797 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); |
37941236 | 1798 | a_ok(a); |
060ca767 | 1799 | } |
060ca767 | 1800 | } |
1801 | ||
1802 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1803 | { | |
f43df819 MW |
1804 | a_info(a, "implementation=edgeware-tripe", A_END); |
1805 | a_info(a, "version=%s", VERSION, A_END); | |
1806 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1807 | a_ok(a); |
1808 | } | |
1809 | ||
c7053da9 | 1810 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1811 | { | |
1812 | peer *p; | |
1813 | stats *st; | |
1814 | ||
37941236 | 1815 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1816 | return; |
060ca767 | 1817 | |
1818 | st = p_stats(p); | |
f43df819 MW |
1819 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1820 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1821 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
1822 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
1823 | a_info(a, | |
1824 | "packets-out=%lu", st->n_out, | |
1825 | "bytes-out=%lu", st->sz_out, | |
1826 | A_END); | |
1827 | a_info(a, | |
1828 | "keyexch-packets-in=%lu", st->n_kxin, | |
1829 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
1830 | A_END); | |
1831 | a_info(a, | |
1832 | "keyexch-packets-out=%lu", st->n_kxout, | |
1833 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
1834 | A_END); | |
1835 | a_info(a, | |
1836 | "ip-packets-in=%lu", st->n_ipin, | |
1837 | "ip-bytes-in=%lu", st->sz_ipin, | |
1838 | A_END); | |
1839 | a_info(a, | |
e04c2d50 | 1840 | "ip-packets-out=%lu", st->n_ipout, |
18ad8913 MW |
1841 | "ip-bytes-out=%lu", st->sz_ipout, |
1842 | A_END); | |
f43df819 | 1843 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 1844 | a_ok(a); |
c7053da9 | 1845 | } |
1846 | ||
410c8acf | 1847 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1848 | { | |
1849 | peer *p; | |
f98df549 | 1850 | |
37941236 | 1851 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1852 | p_destroy(p); |
3cdc3f3a | 1853 | a_ok(a); |
410c8acf | 1854 | } |
1855 | } | |
1856 | ||
0ba8de86 | 1857 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1858 | { | |
1859 | peer *p; | |
f98df549 | 1860 | |
37941236 | 1861 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1862 | kx_start(&p->kx, 1); |
0ba8de86 | 1863 | a_ok(a); |
1864 | } | |
1865 | } | |
1866 | ||
de014da6 | 1867 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1868 | { p_keyreload(); a_ok(a); } | |
1869 | ||
410c8acf | 1870 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1871 | { | |
f43df819 | 1872 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1873 | a_ok(a); |
410c8acf | 1874 | a_quit(); |
1875 | } | |
1876 | ||
3cdc3f3a | 1877 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1878 | { | |
f43df819 | 1879 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1880 | a_ok(a); |
1881 | } | |
1882 | ||
42da2a58 | 1883 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1884 | { | |
1885 | int i; | |
f98df549 | 1886 | |
42da2a58 | 1887 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1888 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1889 | a_ok(a); |
1890 | } | |
1891 | ||
410c8acf | 1892 | /* --- The command table and help --- */ |
1893 | ||
1894 | typedef struct acmd { | |
1895 | const char *name; | |
1896 | const char *help; | |
1897 | unsigned argmin, argmax; | |
1898 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1899 | } acmd; | |
1900 | ||
1901 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1902 | ||
1903 | static const acmd acmdtab[] = { | |
9986f0b5 | 1904 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1905 | { "addr", "PEER", 1, 1, acmd_addr }, |
449991a3 | 1906 | { "algs", 0, 0, 0, acmd_algs }, |
ff92ffd3 | 1907 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1908 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1909 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1910 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1911 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1912 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1913 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1914 | { "help", 0, 0, 0, acmd_help }, | |
1915 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1916 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1917 | { "kill", "PEER", 1, 1, acmd_kill }, |
1918 | { "list", 0, 0, 0, acmd_list }, | |
1919 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1920 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1921 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1922 | { "port", 0, 0, 0, acmd_port }, | |
1923 | { "quit", 0, 0, 0, acmd_quit }, | |
1924 | { "reload", 0, 0, 0, acmd_reload }, | |
1925 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1926 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
be6a1b7a MW |
1927 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
1928 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
1929 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
1930 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 1931 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 1932 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
1933 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
1934 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
1935 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
1936 | 2, 0xffff, acmd_svcsubmit }, | |
f43df819 | 1937 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1938 | #ifndef NTRACE |
f43df819 | 1939 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1940 | #endif |
f43df819 MW |
1941 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1942 | { "version", 0, 0, 0, acmd_version }, | |
1943 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
e04c2d50 | 1944 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, |
410c8acf | 1945 | { 0, 0, 0, 0, 0 } |
1946 | }; | |
1947 | ||
1948 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1949 | { | |
1950 | const acmd *c; | |
f98df549 | 1951 | |
f43df819 MW |
1952 | for (c = acmdtab; c->name; c++) { |
1953 | if (c->help) | |
1954 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
e04c2d50 | 1955 | else |
f43df819 MW |
1956 | a_info(a, "%s", c->name, A_END); |
1957 | } | |
3cdc3f3a | 1958 | a_ok(a); |
410c8acf | 1959 | } |
1960 | ||
1961 | /*----- Connection handling -----------------------------------------------*/ | |
1962 | ||
c511e1f9 | 1963 | /* --- @a_destroypending@ --- * |
410c8acf | 1964 | * |
c511e1f9 | 1965 | * Arguments: --- |
fd3cf232 | 1966 | * |
1967 | * Returns: --- | |
1968 | * | |
c511e1f9 | 1969 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 1970 | */ |
1971 | ||
c511e1f9 | 1972 | static void a_destroypending(void) |
410c8acf | 1973 | { |
94593d1b | 1974 | admin *a, *aa, *head; |
de014da6 | 1975 | admin_bgop *bg, *bbg; |
be6a1b7a | 1976 | admin_service *svc, *ssvc; |
de014da6 | 1977 | |
94593d1b MW |
1978 | /* --- Destroy connections marked as pending --- * |
1979 | * | |
1980 | * Slightly messy. Killing clients may cause others to finally die. Make | |
1981 | * sure that they can be put on the list without clobbering anything or | |
1982 | * getting lost. | |
1983 | */ | |
fd3cf232 | 1984 | |
94593d1b MW |
1985 | while (a_dead) { |
1986 | head = a_dead; | |
1987 | a_dead = 0; | |
1988 | for (a = head; a; a = aa) { | |
1989 | aa = a->next; | |
1990 | assert(a->f & AF_DEAD); | |
c511e1f9 | 1991 | |
94593d1b | 1992 | /* --- Report what we're doing --- */ |
c511e1f9 | 1993 | |
94593d1b MW |
1994 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
1995 | a->seq); ) | |
c511e1f9 | 1996 | |
94593d1b | 1997 | /* --- If this is the foreground client then shut down --- */ |
46dde080 | 1998 | |
94593d1b MW |
1999 | if (a->f & AF_FOREGROUND) { |
2000 | T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); ) | |
2001 | a_warn("SERVER", "quit", "foreground-eof", A_END); | |
2002 | a_quit(); | |
2003 | } | |
46dde080 | 2004 | |
94593d1b | 2005 | /* --- Abort any background jobs in progress --- */ |
c511e1f9 | 2006 | |
94593d1b MW |
2007 | for (bg = a->bg; bg; bg = bbg) { |
2008 | bbg = bg->next; | |
2009 | bg->cancel(bg); | |
2010 | if (bg->tag) xfree(bg->tag); | |
2011 | xfree(bg); | |
2012 | } | |
c511e1f9 | 2013 | |
94593d1b | 2014 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a | 2015 | |
94593d1b MW |
2016 | for (svc = a->svcs; svc; svc = ssvc) { |
2017 | ssvc = svc->next; | |
2018 | a_svcrelease(svc); | |
2019 | } | |
2020 | a_jobtablefinal(&a->j); | |
be6a1b7a | 2021 | |
94593d1b | 2022 | /* --- Close file descriptors and selectory --- */ |
c511e1f9 | 2023 | |
94593d1b MW |
2024 | selbuf_destroy(&a->b); |
2025 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
2026 | close(a->w.fd); | |
2027 | if (a_stdin == a) a_stdin = 0; | |
c511e1f9 | 2028 | |
94593d1b | 2029 | /* --- Done --- */ |
c511e1f9 | 2030 | |
94593d1b MW |
2031 | DESTROY(a); |
2032 | } | |
410c8acf | 2033 | } |
060ca767 | 2034 | } |
2035 | ||
fd3cf232 | 2036 | /* --- @a_destroy@ --- * |
2037 | * | |
2038 | * Arguments: @admin *a@ = pointer to an admin block | |
2039 | * | |
2040 | * Returns: --- | |
2041 | * | |
2042 | * Use: Destroys an admin block. This requires a certain amount of | |
2043 | * care. | |
2044 | */ | |
2045 | ||
de014da6 | 2046 | static void freequeue(oqueue *q) |
2047 | { | |
2048 | obuf *o, *oo; | |
2049 | ||
2050 | for (o = q->hd; o; o = oo) { | |
2051 | oo = o->next; | |
2052 | xfree(o); | |
2053 | } | |
2054 | q->hd = q->tl = 0; | |
2055 | } | |
2056 | ||
fd3cf232 | 2057 | static void a_destroy(admin *a) |
2058 | { | |
fd3cf232 | 2059 | if (a->f & AF_DEAD) |
2060 | return; | |
2061 | ||
c511e1f9 MW |
2062 | if (a->next) a->next->prev = a->prev; |
2063 | if (a->prev) a->prev->next = a->next; | |
2064 | else admins = a->next; | |
fd3cf232 | 2065 | |
c511e1f9 | 2066 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 2067 | freequeue(&a->out); |
fd3cf232 | 2068 | |
c511e1f9 MW |
2069 | a->f |= AF_DEAD; |
2070 | a->next = a_dead; | |
2071 | a_dead = a; | |
fd3cf232 | 2072 | |
c511e1f9 | 2073 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2074 | } |
2075 | ||
410c8acf | 2076 | /* --- @a_line@ --- * |
2077 | * | |
2078 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2079 | * @size_t len@ = length of the line |
410c8acf | 2080 | * @void *vp@ = pointer to my admin block |
2081 | * | |
2082 | * Returns: --- | |
2083 | * | |
2084 | * Use: Handles a line of input. | |
2085 | */ | |
2086 | ||
3008eabf | 2087 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2088 | { |
2089 | admin *a = vp; | |
2090 | const acmd *c; | |
6f88042a | 2091 | char *av[16 + 1]; |
410c8acf | 2092 | size_t ac; |
2093 | ||
8d0c7a83 | 2094 | TIMER; |
fd3cf232 | 2095 | if (a->f & AF_DEAD) |
2096 | return; | |
410c8acf | 2097 | if (!p) { |
de014da6 | 2098 | if (!a->bg) |
2099 | a_destroy(a); | |
2100 | else { | |
2101 | a->f |= AF_CLOSE; | |
2102 | selbuf_disable(&a->b); | |
2103 | } | |
410c8acf | 2104 | return; |
2105 | } | |
6f88042a | 2106 | ac = str_qsplit(p, av, N(av) - 1, 0, STRF_QUOTE); |
410c8acf | 2107 | if (!ac) |
2108 | return; | |
6f88042a | 2109 | av[ac] = 0; |
410c8acf | 2110 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2111 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2112 | ac--; |
f43df819 MW |
2113 | if (c->argmin > ac || ac > c->argmax) { |
2114 | if (!c->help) | |
2115 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
e04c2d50 | 2116 | else |
f43df819 | 2117 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); |
c511e1f9 | 2118 | } else |
410c8acf | 2119 | c->func(a, ac, av + 1); |
2120 | return; | |
2121 | } | |
2122 | } | |
f43df819 | 2123 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2124 | } |
2125 | ||
2126 | /* --- @a_create@ --- * | |
2127 | * | |
2128 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2129 | * @unsigned f@ = initial flags to set |
410c8acf | 2130 | * |
2131 | * Returns: --- | |
2132 | * | |
2133 | * Use: Creates a new admin connection. | |
2134 | */ | |
2135 | ||
3cdc3f3a | 2136 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2137 | { |
2138 | admin *a = CREATE(admin); | |
3cdc3f3a | 2139 | |
93bee2c4 | 2140 | T( static unsigned seq = 0; |
2141 | a->seq = seq++; ) | |
410c8acf | 2142 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2143 | a->bg = 0; |
042d5c20 | 2144 | a->ref = 0; |
be6a1b7a | 2145 | a->svcs = 0; |
5d46c0f8 | 2146 | a_jobtableinit(&a->j); |
3cdc3f3a | 2147 | a->f = f; |
de014da6 | 2148 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2149 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2150 | if (fd_out != fd_in) |
fd3cf232 | 2151 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2152 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2153 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2154 | a->out.hd = a->out.tl = 0; |
410c8acf | 2155 | a->next = admins; |
2156 | a->prev = 0; | |
de014da6 | 2157 | if (admins) admins->prev = a; |
410c8acf | 2158 | admins = a; |
2159 | } | |
2160 | ||
2161 | /* --- @a_accept@ --- * | |
2162 | * | |
2163 | * Arguments: @int fd@ = file descriptor to accept | |
2164 | * @unsigned mode@ = what to do | |
2165 | * @void *v@ = uninteresting pointer | |
2166 | * | |
2167 | * Returns: --- | |
2168 | * | |
2169 | * Use: Accepts a new admin connection. | |
2170 | */ | |
2171 | ||
2172 | static void a_accept(int fd, unsigned mode, void *v) | |
2173 | { | |
2174 | int nfd; | |
2175 | struct sockaddr_un sun; | |
2176 | size_t sz = sizeof(sun); | |
2177 | ||
2178 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2179 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2180 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2181 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2182 | return; |
2183 | } | |
3cdc3f3a | 2184 | a_create(nfd, nfd, 0); |
410c8acf | 2185 | } |
2186 | ||
c511e1f9 MW |
2187 | /* --- @a_preselect@ --- * |
2188 | * | |
2189 | * Arguments: --- | |
2190 | * | |
2191 | * Returns: --- | |
2192 | * | |
2193 | * Use: Informs the admin module that we're about to select again, | |
2194 | * and that it should do cleanup things it has delayed until a | |
2195 | * `safe' time. | |
2196 | */ | |
2197 | ||
2198 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2199 | ||
410c8acf | 2200 | /* --- @a_daemon@ --- * |
2201 | * | |
2202 | * Arguments: --- | |
2203 | * | |
2204 | * Returns: --- | |
2205 | * | |
2206 | * Use: Informs the admin module that it's a daemon. | |
2207 | */ | |
2208 | ||
f98df549 | 2209 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2210 | |
2211 | /* --- @a_init@ --- * | |
2212 | * | |
2213 | * Arguments: @const char *name@ = socket name to create | |
aa2405e8 MW |
2214 | * @uid_t u@ = user to own the socket |
2215 | * @gid_t g@ = group to own the socket | |
a9279e37 | 2216 | * @mode_t m@ = permissions to set on the socket |
410c8acf | 2217 | * |
2218 | * Returns: --- | |
2219 | * | |
2220 | * Use: Creates the admin listening socket. | |
2221 | */ | |
2222 | ||
a9279e37 | 2223 | void a_init(const char *name, uid_t u, gid_t g, mode_t m) |
410c8acf | 2224 | { |
2225 | int fd; | |
2226 | int n = 5; | |
2227 | struct sockaddr_un sun; | |
2228 | struct sigaction sa; | |
2229 | size_t sz; | |
879483d7 | 2230 | mode_t omask; |
410c8acf | 2231 | |
be6a1b7a MW |
2232 | /* --- Create services table --- */ |
2233 | ||
2234 | sym_create(&a_svcs); | |
2235 | ||
410c8acf | 2236 | /* --- Set up the socket address --- */ |
2237 | ||
2238 | sz = strlen(name) + 1; | |
2239 | if (sz > sizeof(sun.sun_path)) | |
2240 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
2241 | BURN(sun); | |
2242 | sun.sun_family = AF_UNIX; | |
2243 | memcpy(sun.sun_path, name, sz); | |
2244 | sz += offsetof(struct sockaddr_un, sun_path); | |
2245 | ||
2246 | /* --- Attempt to bind to the socket --- */ | |
2247 | ||
879483d7 | 2248 | omask = umask(0077); |
410c8acf | 2249 | again: |
2250 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
2251 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
2252 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
2253 | struct stat st; | |
2254 | int e = errno; | |
2255 | if (errno != EADDRINUSE) { | |
2256 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
2257 | sun.sun_path, strerror(e)); | |
2258 | } | |
2259 | if (!n) | |
2260 | die(EXIT_FAILURE, "too many retries; giving up"); | |
2261 | n--; | |
2262 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
2263 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
2264 | sun.sun_path); | |
2265 | } | |
2266 | if (errno != ECONNREFUSED) | |
2267 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
2268 | if (stat(sun.sun_path, &st)) { | |
2269 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
2270 | sun.sun_path, strerror(errno)); | |
2271 | } | |
2272 | if (!S_ISSOCK(st.st_mode)) | |
2273 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 2274 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2275 | unlink(sun.sun_path); |
2276 | close(fd); | |
2277 | goto again; | |
2278 | } | |
aa2405e8 | 2279 | if (chown(sun.sun_path, u, g)) { |
9e0161ce MW |
2280 | die(EXIT_FAILURE, "failed to set socket owner: %s", |
2281 | strerror(errno)); | |
aa2405e8 | 2282 | } |
a9279e37 MW |
2283 | if (chmod(sun.sun_path, m)) { |
2284 | die(EXIT_FAILURE, "failed to set socket permissions: %s", | |
2285 | strerror(errno)); | |
2286 | } | |
879483d7 | 2287 | umask(omask); |
410c8acf | 2288 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
2289 | if (listen(fd, 5)) | |
2290 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
2291 | ||
2292 | /* --- Listen to the socket --- */ | |
2293 | ||
2294 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2295 | sel_addfile(&sock); | |
2296 | sockname = name; | |
2297 | bres_init(&sel); | |
2298 | T( trace_custom(a_trace, 0); | |
2299 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2300 | flags |= F_INIT; | |
2301 | ||
2302 | /* --- Set up signal handlers --- */ | |
2303 | ||
2304 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2305 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 2306 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 2307 | sigaction(SIGINT, 0, &sa); |
2308 | if (sa.sa_handler != SIG_IGN) | |
2309 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2310 | } | |
2311 | ||
2312 | /*----- That's all, folks -------------------------------------------------*/ |