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 | ||
f241e36c MW |
316 | /* --- @a_format@ --- * |
317 | * | |
318 | * Arguments: @dstr *d@ = where to leave the formatted message | |
319 | * @const char *fmt@ = pointer to format string | |
320 | * | |
321 | * Returns: --- | |
322 | * | |
323 | * Use: Writes a tokenized message into a string, for later | |
324 | * presentation. | |
325 | */ | |
326 | ||
327 | void a_format(dstr *d, const char *fmt, ...) | |
328 | { | |
329 | va_list ap; | |
330 | ||
331 | va_start(ap, fmt); | |
332 | a_vformat(d, fmt, ap); | |
333 | va_end(ap); | |
334 | } | |
335 | ||
3cdc3f3a | 336 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 337 | * |
338 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 339 | * @const char *status@ = status code to report |
340 | * @const char *tag@ = tag string, or null | |
410c8acf | 341 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 342 | * @va_list ap@ = arguments in list |
410c8acf | 343 | * @...@ = other arguments |
344 | * | |
345 | * Returns: --- | |
346 | * | |
347 | * Use: Sends a message to an admin connection. | |
348 | */ | |
349 | ||
de014da6 | 350 | static void a_vwrite(admin *a, const char *status, const char *tag, |
351 | const char *fmt, va_list ap) | |
410c8acf | 352 | { |
410c8acf | 353 | dstr d = DSTR_INIT; |
f98df549 | 354 | |
de014da6 | 355 | if (tag) dstr_puts(&d, "BG"); |
356 | dstr_puts(&d, status); | |
0ed0735f | 357 | if (tag) u_quotify(&d, tag); |
f43df819 | 358 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 359 | dstr_putc(&d, '\n'); |
360 | dosend(a, d.buf, d.len); | |
361 | dstr_destroy(&d); | |
362 | } | |
363 | ||
de014da6 | 364 | static void a_write(admin *a, const char *status, const char *tag, |
365 | const char *fmt, ...) | |
3cdc3f3a | 366 | { |
367 | va_list ap; | |
f98df549 | 368 | |
410c8acf | 369 | va_start(ap, fmt); |
de014da6 | 370 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 371 | va_end(ap); |
3cdc3f3a | 372 | } |
373 | ||
374 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
375 | * | |
376 | * Arguments: @admin *a@ = connection | |
377 | * @const char *fmt@ = format string | |
378 | * @...@ = other arguments | |
379 | * | |
380 | * Returns: --- | |
381 | * | |
382 | * Use: Convenience functions for @a_write@. | |
383 | */ | |
384 | ||
f43df819 | 385 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 386 | |
387 | static void a_info(admin *a, const char *fmt, ...) | |
388 | { | |
389 | va_list ap; | |
f98df549 | 390 | |
3cdc3f3a | 391 | va_start(ap, fmt); |
de014da6 | 392 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 393 | va_end(ap); |
394 | } | |
395 | ||
396 | static void a_fail(admin *a, const char *fmt, ...) | |
397 | { | |
398 | va_list ap; | |
f98df549 | 399 | |
3cdc3f3a | 400 | va_start(ap, fmt); |
de014da6 | 401 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 402 | va_end(ap); |
403 | } | |
404 | ||
405 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
406 | * | |
407 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 408 | * @const char *status@ = status string |
3cdc3f3a | 409 | * @const char *fmt@ = pointer to format string |
de014da6 | 410 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 411 | * @size_t sz@ = size of raw string |
412 | * @va_list ap@ = arguments in list | |
413 | * @...@ = other arguments | |
414 | * | |
415 | * Returns: --- | |
416 | * | |
417 | * Use: Write a message to all admin connections matched by the given | |
418 | * filter. | |
419 | */ | |
420 | ||
de014da6 | 421 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 422 | const char *p, size_t sz) |
423 | { | |
424 | admin *a, *aa; | |
425 | dstr d = DSTR_INIT; | |
e04c2d50 | 426 | |
3cdc3f3a | 427 | if (!(flags & F_INIT)) |
428 | return; | |
de014da6 | 429 | dstr_puts(&d, status); |
430 | if (p) { | |
431 | dstr_putc(&d, ' '); | |
3cdc3f3a | 432 | dstr_putm(&d, p, sz); |
de014da6 | 433 | } |
3cdc3f3a | 434 | dstr_putc(&d, '\n'); |
435 | p = d.buf; | |
436 | sz = d.len; | |
437 | for (a = admins; a; a = aa) { | |
438 | aa = a->next; | |
439 | if ((a->f & f_and) == f_eq) | |
440 | dosend(a, d.buf, d.len); | |
441 | } | |
410c8acf | 442 | dstr_destroy(&d); |
443 | } | |
444 | ||
b9adb829 | 445 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 446 | const char *fmt, va_list ap) |
447 | { | |
448 | dstr d = DSTR_INIT; | |
449 | ||
450 | if (!(flags & F_INIT)) | |
451 | return; | |
f43df819 | 452 | a_vformat(&d, fmt, ap); |
b9adb829 | 453 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 454 | dstr_destroy(&d); |
455 | } | |
456 | ||
b9adb829 | 457 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 458 | const char *fmt, ...) |
459 | { | |
460 | va_list ap; | |
f98df549 | 461 | |
3cdc3f3a | 462 | va_start(ap, fmt); |
b9adb829 | 463 | a_valert(f_and, f_eq, status, fmt, ap); |
3cdc3f3a | 464 | va_end(ap); |
465 | } | |
3cdc3f3a | 466 | |
410c8acf | 467 | /* --- @a_warn@ --- * |
468 | * | |
469 | * Arguments: @const char *fmt@ = pointer to format string | |
470 | * @...@ = other arguments | |
471 | * | |
472 | * Returns: --- | |
473 | * | |
474 | * Use: Informs all admin connections of a warning. | |
475 | */ | |
476 | ||
477 | void a_warn(const char *fmt, ...) | |
478 | { | |
479 | va_list ap; | |
410c8acf | 480 | |
410c8acf | 481 | va_start(ap, fmt); |
3cdc3f3a | 482 | if (flags & F_INIT) |
483 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 484 | else { |
f43df819 | 485 | dstr d = DSTR_INIT; |
3cdc3f3a | 486 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
487 | a_vformat(&d, fmt, ap); |
488 | dstr_putc(&d, '\n'); | |
489 | dstr_write(&d, stderr); | |
490 | dstr_destroy(&d); | |
410c8acf | 491 | } |
3cdc3f3a | 492 | va_end(ap); |
410c8acf | 493 | } |
494 | ||
495 | /* --- @a_trace@ --- * | |
496 | * | |
497 | * Arguments: @const char *p@ = pointer to a buffer | |
498 | * @size_t sz@ = size of the buffer | |
499 | * @void *v@ = uninteresting pointer | |
500 | * | |
501 | * Returns: --- | |
502 | * | |
3cdc3f3a | 503 | * Use: Custom trace output handler. Sends trace messages to |
504 | * interested admin connections. | |
410c8acf | 505 | */ |
506 | ||
507 | #ifndef NTRACE | |
508 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 509 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 510 | #endif |
511 | ||
3cdc3f3a | 512 | /* --- @a_notify@ --- * |
513 | * | |
514 | * Arguments: @const char *fmt@ = pointer to format string | |
515 | * @...@ = other arguments | |
516 | * | |
517 | * Returns: --- | |
518 | * | |
519 | * Use: Sends a notification to interested admin connections. | |
520 | */ | |
521 | ||
522 | void a_notify(const char *fmt, ...) | |
523 | { | |
524 | va_list ap; | |
525 | ||
526 | va_start(ap, fmt); | |
527 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
528 | va_end(ap); | |
529 | } | |
530 | ||
410c8acf | 531 | /* --- @a_quit@ --- * |
532 | * | |
533 | * Arguments: --- | |
534 | * | |
535 | * Returns: --- | |
536 | * | |
537 | * Use: Shuts things down nicely. | |
538 | */ | |
539 | ||
540 | void a_quit(void) | |
541 | { | |
542 | close(sock.fd); | |
543 | unlink(sockname); | |
c8e02c8a | 544 | FOREACH_PEER(p, { p_destroy(p); }); |
388e0319 | 545 | ps_quit(); |
410c8acf | 546 | exit(0); |
547 | } | |
548 | ||
549 | /* --- @a_sigdie@ --- * | |
550 | * | |
551 | * Arguments: @int sig@ = signal number | |
552 | * @void *v@ = an uninteresting argument | |
553 | * | |
554 | * Returns: --- | |
555 | * | |
556 | * Use Shuts down on receipt of a fatal signal. | |
557 | */ | |
558 | ||
559 | static void a_sigdie(int sig, void *v) | |
560 | { | |
561 | char *p; | |
562 | char buf[20]; | |
563 | ||
564 | switch (sig) { | |
565 | case SIGTERM: p = "SIGTERM"; break; | |
566 | case SIGINT: p = "SIGINT"; break; | |
567 | default: | |
3cdc3f3a | 568 | sprintf(buf, "%i", sig); |
410c8acf | 569 | p = buf; |
570 | break; | |
571 | } | |
f43df819 | 572 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 573 | a_quit(); |
574 | } | |
575 | ||
576 | /* --- @a_sighup@ --- * | |
577 | * | |
578 | * Arguments: @int sig@ = signal number | |
579 | * @void *v@ = an uninteresting argument | |
580 | * | |
581 | * Returns: --- | |
582 | * | |
583 | * Use Logs a message about SIGHUP not being useful. | |
584 | */ | |
585 | ||
586 | static void a_sighup(int sig, void *v) | |
f98df549 | 587 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 588 | |
0ba8de86 | 589 | /* --- @a_parsetime@ --- * |
590 | * | |
591 | * Arguments; @const char *p@ = time string to parse | |
592 | * | |
593 | * Returns: Time in seconds, or @< 0@ on error. | |
594 | */ | |
595 | ||
596 | static long a_parsetime(const char *p) | |
597 | { | |
598 | char *q; | |
599 | long t = strtol(p, &q, 0); | |
600 | ||
601 | switch (*q) { | |
602 | case 'd': t *= 24; | |
603 | case 'h': t *= 60; | |
604 | case 'm': t *= 60; | |
605 | case 's': if (q[1] != 0) | |
e04c2d50 | 606 | default: t = -1; |
0ba8de86 | 607 | case 0: break; |
608 | } | |
e04c2d50 | 609 | return (t); |
0ba8de86 | 610 | } |
611 | ||
37941236 | 612 | /* --- @a_findpeer@ --- * |
613 | * | |
614 | * Arguments: @admin *a@ = admin connection | |
615 | * @const char *pn@ = peer name | |
616 | * | |
617 | * Returns: The peer, or null if not there. | |
618 | * | |
619 | * Use: Finds a peer, reporting an error if it failed. | |
620 | */ | |
621 | ||
622 | static peer *a_findpeer(admin *a, const char *pn) | |
623 | { | |
624 | peer *p; | |
625 | ||
626 | if ((p = p_find(pn)) == 0) | |
f43df819 | 627 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 628 | return (p); |
629 | } | |
630 | ||
de014da6 | 631 | /*----- Backgrounded operations -------------------------------------------*/ |
632 | ||
060ca767 | 633 | #define BGTAG(bg) \ |
634 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
635 | ||
ff92ffd3 MW |
636 | /* --- @a_bgfind@ --- * |
637 | * | |
638 | * Arguments: @admin *a@ = a client block | |
639 | * @const char *tag@ = the requested tag | |
640 | * | |
641 | * Returns: The requested background job, or null. | |
642 | */ | |
643 | ||
644 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
645 | { | |
646 | admin_bgop *bg; | |
647 | ||
648 | for (bg = a->bg; bg; bg = bg->next) { | |
649 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
650 | return (bg); | |
651 | } | |
652 | return (0); | |
653 | } | |
654 | ||
de014da6 | 655 | /* --- @a_bgrelease@ --- * |
656 | * | |
657 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
658 | * | |
659 | * Returns: --- | |
660 | * | |
661 | * Use: Removes a backgrounded operation from the queue, since | |
662 | * (presumably) it's done. | |
663 | */ | |
664 | ||
665 | static void a_bgrelease(admin_bgop *bg) | |
666 | { | |
667 | admin *a = bg->a; | |
668 | ||
060ca767 | 669 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
670 | if (bg->tag) xfree(bg->tag); | |
671 | else selbuf_enable(&a->b); | |
672 | if (bg->next) bg->next->prev = bg->prev; | |
673 | if (bg->prev) bg->prev->next = bg->next; | |
674 | else a->bg = bg->next; | |
de014da6 | 675 | xfree(bg); |
547a9c13 | 676 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 677 | } |
678 | ||
679 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
680 | * | |
681 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
682 | * @const char *fmt@ = format string | |
683 | * @...@ = other arguments | |
684 | * | |
685 | * Returns: --- | |
686 | * | |
687 | * Use: Convenience functions for @a_write@. | |
688 | */ | |
689 | ||
690 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 691 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 692 | |
693 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
694 | { | |
695 | va_list ap; | |
696 | va_start(ap, fmt); | |
697 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
698 | va_end(ap); | |
699 | } | |
700 | ||
701 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
702 | { | |
703 | va_list ap; | |
704 | va_start(ap, fmt); | |
705 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
706 | va_end(ap); | |
707 | } | |
708 | ||
709 | /* --- @a_bgadd@ --- * | |
710 | * | |
711 | * Arguments: @admin *a@ = administration connection | |
712 | * @admin_bgop *bg@ = pointer to background operation | |
713 | * @const char *tag@ = background tag, or null for foreground | |
714 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
715 | * | |
ff92ffd3 | 716 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 717 | * |
718 | * Use: Links a background job into the list. | |
719 | */ | |
720 | ||
ff92ffd3 MW |
721 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
722 | void (*cancel)(admin_bgop *)) | |
de014da6 | 723 | { |
ff92ffd3 MW |
724 | if (tag) { |
725 | if (a_bgfind(a, tag)) { | |
726 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
727 | return (-1); | |
728 | } | |
de014da6 | 729 | bg->tag = xstrdup(tag); |
ff92ffd3 | 730 | } |
de014da6 | 731 | else { |
732 | bg->tag = 0; | |
733 | selbuf_disable(&a->b); | |
734 | } | |
735 | bg->a = a; | |
736 | bg->cancel = cancel; | |
737 | bg->next = a->bg; | |
738 | bg->prev = 0; | |
060ca767 | 739 | if (a->bg) a->bg->prev = bg; |
de014da6 | 740 | a->bg = bg; |
060ca767 | 741 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 742 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 743 | return (0); |
de014da6 | 744 | } |
745 | ||
5d46c0f8 MW |
746 | /*----- Job table manipulation --------------------------------------------*/ |
747 | ||
748 | #define JOB_SHIFT 16 | |
749 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
750 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
751 | ||
752 | #define JOB_END 0xfffffffful | |
753 | ||
754 | static unsigned long a_joboffset; | |
755 | ||
756 | /* --- @a_jobidencode@ --- * | |
757 | * | |
758 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
759 | * | |
760 | * Returns: A jobid for this job, in an internal static buffer. | |
761 | * | |
762 | * Use: Constructs a jobid. In order to dissuade people from | |
763 | * predicting jobids, we obfuscate them. | |
764 | * | |
765 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
766 | * are an index into a big array. The high 16 bits are a | |
767 | * sequence number recording how many times that slot has been | |
768 | * reused. | |
769 | * | |
770 | * This `raw' jobid is then obfuscated by adding a randomly- | |
771 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
772 | * odd constant. | |
773 | */ | |
774 | ||
775 | static const char *a_jobidencode(admin_svcop *svc) | |
776 | { | |
777 | admin_jobtable *j = &svc->prov->j; | |
778 | static char buf[10]; | |
779 | unsigned long pre; | |
780 | unsigned seq; | |
781 | ||
782 | assert(svc->index <= JOB_INDEXMASK); | |
783 | seq = j->v[svc->index].seq; | |
784 | assert(seq <= JOB_SEQMASK); | |
785 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
786 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
787 | return (buf); | |
788 | } | |
789 | ||
790 | /* --- @a_jobiddecode@ --- * | |
791 | * | |
792 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
793 | * @const char *jid@ = pointer to a jobid string | |
794 | * | |
795 | * Returns: A pointer to the job's @svcop@ structure. | |
796 | */ | |
797 | ||
798 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
799 | { | |
800 | unsigned i; | |
801 | unsigned long pre; | |
802 | ||
803 | if (jid[0] != 'J') | |
804 | return (0); | |
805 | for (i = 1; i < 9; i++) { | |
806 | if (!isxdigit((unsigned char)jid[i])) | |
807 | return (0); | |
808 | } | |
809 | if (jid[9] != 0) | |
810 | return (0); | |
811 | pre = strtoul(jid + 1, 0, 16); | |
812 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
813 | i = pre & JOB_INDEXMASK; | |
814 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
815 | return (0); | |
816 | return (j->v[i].u.op); | |
817 | } | |
818 | ||
819 | /* --- @a_jobcreate@ --- * | |
820 | * | |
821 | * Arguments: @admin *a@ = pointer to administration client | |
822 | * | |
823 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
824 | * | |
825 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
826 | */ | |
827 | ||
828 | static admin_svcop *a_jobcreate(admin *a) | |
829 | { | |
830 | admin_svcop *svc; | |
831 | unsigned i; | |
832 | unsigned sz; | |
833 | admin_jobtable *j = &a->j; | |
834 | ||
835 | if (j->free != JOB_END) { | |
836 | i = j->free; | |
837 | j->free = j->v[i].u.next; | |
838 | } else { | |
839 | if (j->n == j->sz) { | |
840 | if (j->sz > JOB_INDEXMASK) | |
841 | return (0); | |
842 | sz = j->sz; | |
843 | if (!sz) { | |
844 | j->sz = 16; | |
845 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
846 | } else { | |
847 | j->sz = sz << 1; | |
848 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
849 | } | |
850 | } | |
851 | i = j->n++; | |
852 | j->v[i].seq = 0; | |
853 | } | |
854 | svc = xmalloc(sizeof(*svc)); | |
855 | svc->index = i; | |
856 | svc->prov = a; | |
857 | svc->next = j->active; | |
858 | svc->prev = 0; | |
859 | if (j->active) j->active->prev = svc; | |
860 | j->active = svc; | |
861 | j->v[i].u.op = svc; | |
862 | IF_TRACING(T_ADMIN, { | |
863 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
864 | }) | |
865 | return (svc); | |
866 | } | |
867 | ||
868 | /* --- @a_jobdestroy@ --- * | |
869 | * | |
870 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
871 | * | |
872 | * Returns: --- | |
873 | * | |
874 | * Use: Frees up a completed (or cancelled) job. | |
875 | */ | |
876 | ||
877 | static void a_jobdestroy(admin_svcop *svc) | |
878 | { | |
879 | admin *a = svc->prov; | |
880 | admin_jobtable *j = &a->j; | |
881 | unsigned i = svc->index; | |
882 | ||
883 | IF_TRACING(T_ADMIN, { | |
884 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
885 | }) | |
886 | assert(j->v[i].u.op = svc); | |
887 | j->v[i].u.next = j->free; | |
888 | j->v[i].seq++; | |
889 | j->free = i; | |
890 | if (svc->next) svc->next->prev = svc->prev; | |
891 | if (svc->prev) svc->prev->next = svc->next; | |
892 | else j->active = svc->next; | |
893 | } | |
894 | ||
895 | /* --- @a_jobtableinit@ --- * | |
896 | * | |
897 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
898 | * | |
899 | * Returns: --- | |
900 | * | |
901 | * Use: Initializes a job table. | |
902 | */ | |
903 | ||
904 | static void a_jobtableinit(admin_jobtable *j) | |
905 | { | |
906 | if (!a_joboffset) | |
907 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
908 | j->n = j->sz = 0; | |
909 | j->active = 0; | |
910 | j->free = JOB_END; | |
911 | j->v = 0; | |
912 | } | |
913 | ||
914 | /* --- @a_jobtablefinal@ --- * | |
915 | * | |
916 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
917 | * | |
918 | * Returns: --- | |
919 | * | |
920 | * Use: Closes down a job table. | |
921 | */ | |
922 | ||
923 | static void a_jobtablefinal(admin_jobtable *j) | |
924 | { | |
925 | admin_svcop *svc, *ssvc; | |
926 | ||
927 | for (svc = j->active; svc; svc = ssvc) { | |
928 | ssvc = svc->next; | |
929 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
930 | a_bgrelease(&svc->bg); | |
931 | } | |
932 | if (j->v) xfree(j->v); | |
933 | } | |
934 | ||
be6a1b7a MW |
935 | /*----- Services infrastructure -------------------------------------------*/ |
936 | ||
937 | /* --- @a_svcfind@ --- * | |
938 | * | |
939 | * Arguments: @admin *a@ = the requesting client | |
940 | * @const char *name@ = service name wanted | |
941 | * | |
942 | * Returns: The service requested, or null. | |
943 | * | |
944 | * Use: Finds a service; reports an error if the service couldn't be | |
945 | * found. | |
946 | */ | |
947 | ||
948 | static admin_service *a_svcfind(admin *a, const char *name) | |
949 | { | |
950 | admin_service *svc; | |
951 | ||
952 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
953 | a_fail(a, "unknown-service", "%s", name, A_END); | |
954 | return (0); | |
955 | } | |
956 | return (svc); | |
957 | } | |
958 | ||
959 | /* --- @a_svcunlink@ --- * | |
960 | * | |
961 | * Arguments: @admin_service *svc@ = pointer to service structure | |
962 | * | |
963 | * Returns: --- | |
964 | * | |
965 | * Use: Unlinks the service from its provider, without issuing a | |
966 | * message or freeing the structure. The version string is | |
967 | * freed, however. | |
968 | */ | |
969 | ||
970 | static void a_svcunlink(admin_service *svc) | |
971 | { | |
972 | if (svc->next) | |
973 | svc->next->prev = svc->prev; | |
974 | if (svc->prev) | |
975 | svc->prev->next = svc->next; | |
976 | else | |
977 | svc->prov->svcs = svc->next; | |
978 | xfree(svc->version); | |
979 | } | |
980 | ||
981 | /* --- @a_svcrelease@ --- * | |
982 | * | |
983 | * Arguments: @admin_service *svc@ = pointer to service structure | |
984 | * | |
985 | * Returns: --- | |
986 | * | |
987 | * Use: Releases a service and frees its structure. | |
988 | */ | |
989 | ||
990 | static void a_svcrelease(admin_service *svc) | |
991 | { | |
992 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
993 | a_svcunlink(svc); | |
994 | sym_remove(&a_svcs, svc); | |
de014da6 | 995 | } |
996 | ||
37941236 | 997 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 998 | |
37941236 | 999 | /* --- @a_resolved@ --- * |
de014da6 | 1000 | * |
37941236 | 1001 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
1002 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1003 | * |
1004 | * Returns: --- | |
1005 | * | |
37941236 | 1006 | * Use: Handles a completed name resolution. |
de014da6 | 1007 | */ |
1008 | ||
37941236 | 1009 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 1010 | { |
37941236 | 1011 | admin_resop *r = v; |
1012 | ||
1013 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
1014 | TIMER; | |
1015 | if (!h) { | |
f43df819 | 1016 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 1017 | r->func(r, ARES_FAIL); |
1018 | } else { | |
1019 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
1020 | r->func(r, ARES_OK); | |
1021 | } | |
1022 | sel_rmtimer(&r->t); | |
1023 | xfree(r->addr); | |
1024 | a_bgrelease(&r->bg); | |
e04c2d50 | 1025 | } |
de014da6 | 1026 | |
37941236 | 1027 | /* --- @a_restimer@ --- * |
de014da6 | 1028 | * |
37941236 | 1029 | * Arguments: @struct timeval *tv@ = timer |
1030 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1031 | * |
1032 | * Returns: --- | |
1033 | * | |
37941236 | 1034 | * Use: Times out a resolver. |
de014da6 | 1035 | */ |
1036 | ||
37941236 | 1037 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 1038 | { |
37941236 | 1039 | admin_resop *r = v; |
1040 | ||
1041 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1042 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1043 | r->func(r, ARES_FAIL); |
1044 | bres_abort(&r->r); | |
1045 | xfree(r->addr); | |
1046 | a_bgrelease(&r->bg); | |
de014da6 | 1047 | } |
1048 | ||
37941236 | 1049 | /* --- @a_rescancel@ --- * |
de014da6 | 1050 | * |
37941236 | 1051 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1052 | * |
1053 | * Returns: --- | |
1054 | * | |
37941236 | 1055 | * Use: Cancels an add operation. |
de014da6 | 1056 | */ |
1057 | ||
37941236 | 1058 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1059 | { |
37941236 | 1060 | admin_resop *r = (admin_resop *)bg; |
1061 | ||
1062 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1063 | r->func(r, ARES_FAIL); | |
1064 | sel_rmtimer(&r->t); | |
1065 | xfree(r->addr); | |
1066 | bres_abort(&r->r); | |
de014da6 | 1067 | } |
37941236 | 1068 | |
1069 | /* --- @a_resolve@ --- * | |
410c8acf | 1070 | * |
37941236 | 1071 | * Arguments: @admin *a@ = administration connection |
1072 | * @admin_resop *r@ = resolver operation to run | |
1073 | * @const char *tag@ = background operation tag | |
1074 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1075 | * @unsigned ac@ = number of remaining arguments | |
1076 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1077 | * |
1078 | * Returns: --- | |
1079 | * | |
37941236 | 1080 | * Use: Cranks up a resolver job. |
410c8acf | 1081 | */ |
1082 | ||
37941236 | 1083 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1084 | void (*func)(struct admin_resop *, int), | |
1085 | unsigned ac, char *av[]) | |
410c8acf | 1086 | { |
37941236 | 1087 | struct timeval tv; |
1088 | unsigned long pt; | |
1089 | char *p; | |
1090 | int i = 0; | |
fd3cf232 | 1091 | |
37941236 | 1092 | /* --- Fill in the easy bits of address --- */ |
1093 | ||
452bf3f6 | 1094 | r->bg.tag = "<starting>"; |
37941236 | 1095 | r->addr = 0; |
1096 | r->func = func; | |
1097 | if (mystrieq(av[i], "inet")) i++; | |
165efde7 MW |
1098 | if (ac - i != 1 && ac - i != 2) { |
1099 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS [PORT]", A_END); | |
37941236 | 1100 | goto fail; |
1101 | } | |
1102 | r->sa.sin.sin_family = AF_INET; | |
1103 | r->sasz = sizeof(r->sa.sin); | |
1104 | r->addr = xstrdup(av[i]); | |
6f88042a | 1105 | if (!av[i + 1]) |
165efde7 MW |
1106 | pt = TRIPE_PORT; |
1107 | else { | |
1108 | pt = strtoul(av[i + 1], &p, 0); | |
1109 | if (*p) { | |
1110 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1111 | if (!s) { | |
1112 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); | |
1113 | goto fail; | |
1114 | } | |
1115 | pt = ntohs(s->s_port); | |
37941236 | 1116 | } |
410c8acf | 1117 | } |
37941236 | 1118 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1119 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1120 | goto fail; |
1121 | } | |
1122 | r->sa.sin.sin_port = htons(pt); | |
1123 | ||
1124 | /* --- Report backgrounding --- * | |
1125 | * | |
1126 | * Do this for consistency of interface, even if we're going to get the | |
1127 | * answer straight away. | |
1128 | */ | |
1129 | ||
ff92ffd3 MW |
1130 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1131 | goto fail; | |
37941236 | 1132 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
1133 | a->seq, BGTAG(r), r->addr); ) | |
1134 | ||
1135 | /* --- If the name is numeric, do it the easy way --- */ | |
e04c2d50 | 1136 | |
37941236 | 1137 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { |
1138 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1139 | func(r, ARES_OK); | |
1140 | xfree(r->addr); | |
1141 | a_bgrelease(&r->bg); | |
1142 | return; | |
1143 | } | |
1144 | ||
1145 | /* --- Store everything for later and crank up the resolver --- */ | |
1146 | ||
1147 | gettimeofday(&tv, 0); | |
1148 | tv.tv_sec += T_RESOLVE; | |
1149 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
1150 | bres_byname(&r->r, r->addr, a_resolved, r); | |
1151 | return; | |
1152 | ||
1153 | fail: | |
1154 | func(r, ARES_FAIL); | |
1155 | if (r->addr) xfree(r->addr); | |
1156 | xfree(r); | |
410c8acf | 1157 | } |
1158 | ||
e7a4d919 MW |
1159 | /*----- Option parsing ----------------------------------------------------*/ |
1160 | ||
1161 | #define OPTIONS(argc, argv, guts) do { \ | |
1162 | char **o_av = argv; \ | |
1163 | for (;; o_av++) { \ | |
1164 | if (!*o_av) \ | |
1165 | break; \ | |
1166 | if (mystrieq(*o_av, "--")) { \ | |
1167 | o_av++; \ | |
1168 | break; \ | |
1169 | } \ | |
1170 | guts \ | |
1171 | if (**o_av == '-') \ | |
1172 | goto bad_syntax; \ | |
1173 | break; \ | |
1174 | } \ | |
1175 | argc -= o_av - argv; \ | |
1176 | argv = o_av; \ | |
1177 | } while (0) | |
1178 | ||
1179 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1180 | ||
1181 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1182 | const char *arg; \ | |
1183 | arg = *++o_av; \ | |
1184 | if (!arg) goto bad_syntax; \ | |
1185 | guts \ | |
1186 | }) | |
1187 | ||
1188 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1189 | long arg; \ | |
1190 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1191 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1192 | goto fail; \ | |
1193 | } \ | |
1194 | guts \ | |
1195 | }) | |
1196 | ||
37941236 | 1197 | /*----- Adding peers ------------------------------------------------------*/ |
1198 | ||
1199 | /* --- @a_doadd@ --- * | |
410c8acf | 1200 | * |
37941236 | 1201 | * Arguments: @admin_resop *r@ = resolver operation |
1202 | * @int rc@ = how it worked | |
410c8acf | 1203 | * |
1204 | * Returns: --- | |
1205 | * | |
37941236 | 1206 | * Use: Handles a completed resolution. |
410c8acf | 1207 | */ |
1208 | ||
37941236 | 1209 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1210 | { |
37941236 | 1211 | admin_addop *add = (admin_addop *)r; |
1212 | ||
1213 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1214 | ||
1215 | if (rc == ARES_OK) { | |
1216 | add->peer.sasz = add->r.sasz; | |
1217 | add->peer.sa = add->r.sa; | |
c8e02c8a MW |
1218 | if (p_findbyaddr(&add->r.sa)) |
1219 | a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END); | |
1220 | else if (p_find(add->peer.name)) | |
f43df819 | 1221 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 1222 | else if (!p_create(&add->peer)) |
f43df819 | 1223 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 1224 | else |
1225 | a_bgok(&add->r.bg); | |
1226 | } | |
de014da6 | 1227 | |
48b84569 | 1228 | if (add->peer.tag) xfree(add->peer.tag); |
37941236 | 1229 | xfree(add->peer.name); |
410c8acf | 1230 | } |
1231 | ||
1232 | /* --- @acmd_add@ --- * | |
1233 | * | |
1234 | * Arguments: @admin *a@ = connection which requested the addition | |
1235 | * @unsigned ac@ = argument count | |
1236 | * @char *av[]@ = pointer to the argument list | |
1237 | * | |
1238 | * Returns: --- | |
1239 | * | |
1240 | * Use: Adds a new peer. | |
1241 | */ | |
1242 | ||
1243 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
1244 | { | |
de014da6 | 1245 | const char *tag = 0; |
9986f0b5 | 1246 | admin_addop *add; |
410c8acf | 1247 | |
0ba8de86 | 1248 | /* --- Set stuff up --- */ |
1249 | ||
de014da6 | 1250 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 1251 | add->peer.name = 0; |
48b84569 | 1252 | add->peer.tag = 0; |
fe2a5dcf | 1253 | add->peer.privtag = 0; |
de014da6 | 1254 | add->peer.t_ka = 0; |
1255 | add->peer.tops = tun_default; | |
8743c776 | 1256 | add->peer.f = 0; |
37941236 | 1257 | |
42da2a58 | 1258 | /* --- Parse options --- */ |
1259 | ||
e7a4d919 MW |
1260 | OPTIONS(ac, av, { |
1261 | OPTARG("-background", arg, { tag = arg; }) | |
1262 | OPTARG("-tunnel", arg, { | |
1263 | unsigned i; | |
1264 | for (i = 0;; i++) { | |
1265 | if (!tunnels[i]) { | |
1266 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 1267 | goto fail; |
42da2a58 | 1268 | } |
e7a4d919 MW |
1269 | if (mystrieq(arg, tunnels[i]->name)) { |
1270 | add->peer.tops = tunnels[i]; | |
42da2a58 | 1271 | break; |
1272 | } | |
1273 | } | |
e7a4d919 MW |
1274 | }) |
1275 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
8743c776 | 1276 | OPT("-cork", { add->peer.f |= KXF_CORK; }) |
48b84569 MW |
1277 | OPTARG("-key", arg, { |
1278 | if (add->peer.tag) | |
1279 | xfree(add->peer.tag); | |
1280 | add->peer.tag = xstrdup(arg); | |
1281 | }) | |
6411163d | 1282 | OPT("-mobile", { add->peer.f |= PSF_MOBILE; }) |
fe2a5dcf MW |
1283 | OPTARG("-priv", arg, { |
1284 | if (add->peer.privtag) | |
1285 | xfree(add->peer.privtag); | |
1286 | add->peer.privtag = xstrdup(arg); | |
1287 | }) | |
e7a4d919 | 1288 | }); |
42da2a58 | 1289 | |
9986f0b5 MW |
1290 | /* --- Make sure someone's not got there already --- */ |
1291 | ||
bcf3764a | 1292 | if (!av[0] || !av[1]) |
9986f0b5 | 1293 | goto bad_syntax; |
e7a4d919 MW |
1294 | if (p_find(*av)) { |
1295 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1296 | goto fail; |
42da2a58 | 1297 | } |
e7a4d919 MW |
1298 | add->peer.name = xstrdup(*av++); |
1299 | ac--; | |
42da2a58 | 1300 | |
37941236 | 1301 | /* --- Crank up the resolver --- */ |
de014da6 | 1302 | |
e7a4d919 | 1303 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1304 | return; |
1305 | ||
37941236 | 1306 | /* --- Clearing up --- */ |
1307 | ||
42da2a58 | 1308 | bad_syntax: |
9986f0b5 | 1309 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1310 | fail: |
9986f0b5 | 1311 | if (add->peer.name) xfree(add->peer.name); |
48b84569 | 1312 | if (add->peer.tag) xfree(add->peer.tag); |
fe2a5dcf | 1313 | if (add->peer.privtag) xfree(add->peer.privtag); |
37941236 | 1314 | xfree(add); |
0ba8de86 | 1315 | return; |
1316 | } | |
1317 | ||
1318 | /*----- Ping --------------------------------------------------------------*/ | |
1319 | ||
de014da6 | 1320 | /* --- @a_pingcancel@ --- * |
1321 | * | |
1322 | * Arguments: @admin_bgop *bg@ = background operation block | |
1323 | * | |
1324 | * Returns: --- | |
1325 | * | |
1326 | * Use: Cancels a running ping. | |
1327 | */ | |
1328 | ||
1329 | static void a_pingcancel(admin_bgop *bg) | |
1330 | { | |
1331 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1332 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1333 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1334 | } | |
1335 | ||
0ba8de86 | 1336 | /* --- @a_pong@ --- * |
1337 | * | |
1338 | * Arguments: @int rc@ = return code | |
de014da6 | 1339 | * @void *v@ = ping operation block |
0ba8de86 | 1340 | * |
1341 | * Returns: --- | |
1342 | * | |
1343 | * Use: Collects what happened to a ping message. | |
1344 | */ | |
1345 | ||
de014da6 | 1346 | static void a_pong(int rc, void *v) |
0ba8de86 | 1347 | { |
de014da6 | 1348 | admin_pingop *pg = v; |
0ba8de86 | 1349 | struct timeval tv; |
1350 | double millis; | |
1351 | ||
0ba8de86 | 1352 | switch (rc) { |
1353 | case PING_OK: | |
1354 | gettimeofday(&tv, 0); | |
de014da6 | 1355 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1356 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1357 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1358 | a_bgok(&pg->bg); |
0ba8de86 | 1359 | break; |
1360 | case PING_TIMEOUT: | |
f43df819 | 1361 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1362 | a_bgok(&pg->bg); |
0ba8de86 | 1363 | break; |
1364 | case PING_PEERDIED: | |
f43df819 | 1365 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1366 | a_bgok(&pg->bg); |
0ba8de86 | 1367 | break; |
1368 | default: | |
1369 | abort(); | |
1370 | } | |
060ca767 | 1371 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1372 | a_bgrelease(&pg->bg); |
0ba8de86 | 1373 | } |
1374 | ||
1375 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1376 | * | |
1377 | * Arguments: @admin *a@ = connection which requested the ping | |
1378 | * @unsigned ac@ = argument count | |
1379 | * @char *av[]@ = pointer to the argument list | |
1380 | * | |
1381 | * Returns: --- | |
1382 | * | |
1383 | * Use: Pings a peer. | |
1384 | */ | |
1385 | ||
1386 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1387 | const char *cmd, unsigned msg) | |
1388 | { | |
1389 | long t = T_PING; | |
0ba8de86 | 1390 | peer *p; |
de014da6 | 1391 | admin_pingop *pg = 0; |
1392 | const char *tag = 0; | |
0ba8de86 | 1393 | |
e7a4d919 MW |
1394 | OPTIONS(ac, av, { |
1395 | OPTARG("-background", arg, { tag = arg; }) | |
1396 | OPTTIME("-timeout", arg, { t = arg; }) | |
1397 | }); | |
1398 | if (!*av || av[1]) goto bad_syntax; | |
1399 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1400 | return; |
de014da6 | 1401 | pg = xmalloc(sizeof(*pg)); |
1402 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1403 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1404 | goto fail; | |
060ca767 | 1405 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1406 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1407 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1408 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1409 | a_bgrelease(&pg->bg); |
1410 | } | |
0ba8de86 | 1411 | return; |
e04c2d50 | 1412 | |
0ba8de86 | 1413 | bad_syntax: |
f43df819 | 1414 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1415 | fail: |
ff92ffd3 | 1416 | if (pg) xfree(pg); |
42da2a58 | 1417 | return; |
410c8acf | 1418 | } |
1419 | ||
0ba8de86 | 1420 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1421 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1422 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1423 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1424 | |
be6a1b7a MW |
1425 | /*----- Service commands --------------------------------------------------*/ |
1426 | ||
1427 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1428 | { | |
1429 | admin_service *svc; | |
1430 | unsigned f; | |
1431 | ||
1432 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1433 | if (f) { | |
1434 | if (versioncmp(av[1], svc->version) <= 0) { | |
1435 | a_fail(a, | |
1436 | "service-exists", | |
1437 | "%s", SYM_NAME(svc), | |
1438 | "%s", svc->version, | |
1439 | A_END); | |
1440 | return; | |
1441 | } | |
1442 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1443 | a_svcunlink(svc); | |
1444 | } | |
1445 | svc->prov = a; | |
1446 | svc->version = xstrdup(av[1]); | |
1447 | svc->next = a->svcs; | |
1448 | svc->prev = 0; | |
1449 | if (a->svcs) a->svcs->prev = svc; | |
1450 | a->svcs = svc; | |
1451 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1452 | a_ok(a); | |
1453 | } | |
1454 | ||
1455 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1456 | { | |
1457 | admin_service *svc; | |
1458 | ||
1459 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1460 | return; | |
1461 | if (svc->prov != a) { | |
1462 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1463 | return; | |
1464 | } | |
1465 | a_svcrelease(svc); | |
1466 | a_ok(a); | |
1467 | } | |
1468 | ||
1469 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1470 | { | |
1471 | admin_service *svc; | |
1472 | ||
1473 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1474 | return; | |
1475 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1476 | a_fail(a, "service-too-old", | |
1477 | "%s", SYM_NAME(svc), | |
1478 | "%s", svc->version, | |
1479 | A_END); | |
1480 | return; | |
1481 | } | |
1482 | a_ok(a); | |
1483 | } | |
1484 | ||
1485 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1486 | { | |
1487 | admin_service *svc; | |
1488 | ||
1489 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1490 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1491 | a_ok(a); | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1496 | { | |
1497 | admin_service *svc; | |
1498 | sym_iter i; | |
1499 | ||
1500 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1501 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1502 | a_ok(a); | |
1503 | } | |
1504 | ||
ef2f29c9 MW |
1505 | static void a_canceljob(admin_bgop *bg) |
1506 | { | |
1507 | admin_svcop *svc = (admin_svcop *)bg; | |
1508 | ||
1509 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1510 | a_jobdestroy(svc); | |
1511 | } | |
1512 | ||
1513 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1514 | { | |
1515 | const char *tag = 0; | |
1516 | admin_service *svc; | |
1517 | admin_svcop *svcop; | |
1518 | const char *ver = 0; | |
1519 | dstr d = DSTR_INIT; | |
1520 | ||
1521 | OPTIONS(ac, av, { | |
1522 | OPTARG("-background", arg, { tag = arg; }) | |
1523 | OPTARG("-version", arg, { ver = arg; }) | |
1524 | }); | |
1525 | if (!*av) goto bad_syntax; | |
1526 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1527 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1528 | a_fail(a, "service-too-old", | |
1529 | "%s", SYM_NAME(svc), | |
1530 | "%s", svc->version, | |
1531 | A_END); | |
1532 | goto fail; | |
1533 | } | |
1534 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1535 | a_fail(a, "provider-overloaded", A_END); | |
1536 | goto fail; | |
1537 | } | |
1538 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1539 | a_jobdestroy(svcop); | |
1540 | goto fail; | |
1541 | } | |
1542 | a_write(svc->prov, "SVCJOB", 0, | |
1543 | "%s", a_jobidencode(svcop), | |
1544 | "?TOKENS", av, | |
1545 | A_END); | |
1546 | goto done; | |
1547 | ||
1548 | bad_syntax: | |
1549 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1550 | fail: | |
1551 | done: | |
1552 | dstr_destroy(&d); | |
1553 | return; | |
1554 | } | |
1555 | ||
1556 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1557 | { | |
1558 | admin_svcop *svc; | |
1559 | ||
1560 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1561 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1562 | return; | |
1563 | } | |
1564 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1565 | if (donep) { | |
1566 | a_jobdestroy(svc); | |
1567 | a_bgrelease(&svc->bg); | |
1568 | } | |
1569 | a_ok(a); | |
1570 | } | |
1571 | ||
1572 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1573 | { a_replycmd(a, "OK", 1, av); } | |
1574 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1575 | { a_replycmd(a, "INFO", 0, av); } | |
1576 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1577 | { a_replycmd(a, "FAIL", 1, av); } | |
1578 | ||
410c8acf | 1579 | /*----- Administration commands -------------------------------------------*/ |
1580 | ||
1581 | /* --- Miscellaneous commands --- */ | |
1582 | ||
3cdc3f3a | 1583 | /* --- @traceish@ --- * |
1584 | * | |
1585 | * Arguments: @admin *a@ = connection to complain on | |
1586 | * @unsigned ac@ = number of arguments | |
1587 | * @char *av[]@ = vector of arguments | |
1588 | * @const char *what@ = what we're messing with | |
1589 | * @const trace_opt *tt@ = options table | |
1590 | * @unsigned *ff@ = where the flags are | |
1591 | * | |
1592 | * Returns: Nonzero if anything changed. | |
1593 | * | |
1594 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1595 | */ | |
410c8acf | 1596 | |
3cdc3f3a | 1597 | static int traceish(admin *a, unsigned ac, char *av[], |
1598 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1599 | { |
3cdc3f3a | 1600 | int ch = 0; |
1601 | ||
410c8acf | 1602 | if (!ac || strcmp(av[0], "?") == 0) { |
1603 | const trace_opt *t; | |
3cdc3f3a | 1604 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1605 | a_info(a, "*%c%c %s", |
1606 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1607 | } |
1608 | } else { | |
1609 | unsigned sense = 1; | |
3cdc3f3a | 1610 | unsigned f = *ff; |
1611 | const trace_opt *t; | |
410c8acf | 1612 | char *p = av[0]; |
1613 | ||
1614 | while (*p) { | |
1615 | switch (*p) { | |
1616 | case '+': sense = 1; break; | |
1617 | case '-': sense = 0; break; | |
1618 | default: | |
3cdc3f3a | 1619 | for (t = tt; t->ch; t++) { |
1620 | if (t->ch == *p) { | |
1621 | if (sense) f |= t->f; | |
1622 | else f &= ~t->f; | |
410c8acf | 1623 | goto tropt_ok; |
1624 | } | |
1625 | } | |
f43df819 | 1626 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1627 | return (0); |
e04c2d50 | 1628 | tropt_ok:; |
410c8acf | 1629 | break; |
1630 | } | |
1631 | p++; | |
1632 | } | |
3cdc3f3a | 1633 | *ff = f; |
1634 | ch = 1; | |
410c8acf | 1635 | } |
3cdc3f3a | 1636 | a_ok(a); |
1637 | return (ch); | |
1638 | } | |
1639 | ||
1640 | #ifndef NTRACE | |
1641 | ||
1642 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1643 | { | |
1644 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1645 | trace_level(tr_flags); | |
410c8acf | 1646 | } |
1647 | ||
1648 | #endif | |
1649 | ||
3cdc3f3a | 1650 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1651 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1652 | |
3cdc3f3a | 1653 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1654 | const char *status, char *av[]) |
1655 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1656 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1657 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1658 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1659 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1660 | |
410c8acf | 1661 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1662 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1663 | |
410c8acf | 1664 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1665 | { | |
1666 | if (flags & F_DAEMON) | |
f43df819 | 1667 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1668 | else { |
f43df819 | 1669 | a_notify("DAEMON", A_END); |
93bee2c4 | 1670 | if (a_stdin) |
410c8acf | 1671 | a_destroy(a_stdin); |
19dd2531 | 1672 | if (daemonize()) |
f43df819 | 1673 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1674 | else { |
410c8acf | 1675 | flags |= F_DAEMON; |
3cdc3f3a | 1676 | a_ok(a); |
93bee2c4 | 1677 | } |
410c8acf | 1678 | } |
1679 | } | |
1680 | ||
ff92ffd3 MW |
1681 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1682 | { | |
1683 | admin_bgop *bg; | |
1684 | ||
1685 | for (bg = a->bg; bg; bg = bg->next) { | |
1686 | assert(bg->tag); | |
1687 | a_info(a, "%s", bg->tag, A_END); | |
1688 | } | |
1689 | a_ok(a); | |
1690 | } | |
1691 | ||
1692 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1693 | { | |
1694 | admin_bgop *bg; | |
1695 | ||
1696 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1697 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1698 | else { | |
1699 | bg->cancel(bg); | |
1700 | a_bgrelease(bg); | |
1701 | a_ok(a); | |
1702 | } | |
1703 | } | |
1704 | ||
449991a3 MW |
1705 | static void acmd_algs(admin *a, unsigned ac, char *av[]) |
1706 | { | |
35c8b547 MW |
1707 | peer *p; |
1708 | const kdata *kd; | |
1709 | const group *g; | |
1710 | const algswitch *algs; | |
1711 | ||
1712 | if (!ac) | |
1713 | kd = master; | |
1714 | else { | |
1715 | if ((p = a_findpeer(a, av[0])) == 0) return; | |
1716 | kd = p->kx.kpriv; | |
1717 | } | |
1718 | g = kd->g; | |
1719 | algs = &kd->algs; | |
1720 | ||
449991a3 | 1721 | a_info(a, |
35c8b547 MW |
1722 | "kx-group=%s", g->ops->name, |
1723 | "kx-group-order-bits=%lu", (unsigned long)mp_bits(g->r), | |
1724 | "kx-group-elt-bits=%lu", (unsigned long)g->nbits, | |
449991a3 MW |
1725 | A_END); |
1726 | a_info(a, | |
35c8b547 MW |
1727 | "hash=%s", algs->h->name, |
1728 | "mgf=%s", algs->mgf->name, | |
1729 | "hash-sz=%lu", (unsigned long)algs->h->hashsz, | |
449991a3 MW |
1730 | A_END); |
1731 | a_info(a, | |
35c8b547 MW |
1732 | "cipher=%s", algs->c->name, |
1733 | "cipher-keysz=%lu", (unsigned long)algs->cksz, | |
1734 | "cipher-blksz=%lu", (unsigned long)algs->c->blksz, | |
449991a3 MW |
1735 | A_END); |
1736 | a_info(a, | |
35c8b547 | 1737 | "cipher-data-limit=%lu", (unsigned long)algs->expsz, |
449991a3 MW |
1738 | A_END); |
1739 | a_info(a, | |
35c8b547 MW |
1740 | "mac=%s", algs->m->name, |
1741 | "mac-keysz=%lu", (unsigned long)algs->mksz, | |
1742 | "mac-tagsz=%lu", (unsigned long)algs->tagsz, | |
449991a3 MW |
1743 | A_END); |
1744 | a_ok(a); | |
1745 | } | |
1746 | ||
410c8acf | 1747 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1748 | { | |
c8e02c8a | 1749 | FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); }); |
3cdc3f3a | 1750 | a_ok(a); |
410c8acf | 1751 | } |
1752 | ||
1753 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1754 | { | |
1755 | peer *p; | |
1756 | ||
37941236 | 1757 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1758 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1759 | a_ok(a); |
1760 | } | |
410c8acf | 1761 | } |
1762 | ||
64cf2223 MW |
1763 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1764 | { | |
1765 | peer *p; | |
1766 | ||
1767 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1768 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1769 | p_setifname(p, av[1]); | |
1770 | a_ok(a); | |
e04c2d50 | 1771 | } |
64cf2223 MW |
1772 | } |
1773 | ||
37941236 | 1774 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1775 | { | |
1776 | buf b; | |
1777 | ||
1778 | buf_init(&b, buf_i, PKBUFSZ); | |
1779 | c_new(&b); | |
f43df819 | 1780 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1781 | a_ok(a); |
1782 | } | |
1783 | ||
1784 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1785 | { | |
1786 | base64_ctx b64; | |
1787 | buf b; | |
1788 | dstr d = DSTR_INIT; | |
1789 | ||
1790 | base64_init(&b64); | |
1791 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1792 | base64_decode(&b64, 0, 0, &d); | |
1793 | buf_init(&b, d.buf, d.len); | |
1794 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1795 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1796 | else |
1797 | a_ok(a); | |
1798 | dstr_destroy(&d); | |
1799 | } | |
1800 | ||
1801 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1802 | { | |
1803 | peer *p; | |
1804 | base64_ctx b64; | |
1805 | dstr d = DSTR_INIT; | |
1806 | ||
1807 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1808 | base64_init(&b64); | |
1809 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1810 | base64_decode(&b64, 0, 0, &d); | |
1811 | p_greet(p, d.buf, d.len); | |
1812 | dstr_destroy(&d); | |
1813 | a_ok(a); | |
1814 | } | |
1815 | } | |
1816 | ||
410c8acf | 1817 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1818 | { | |
1819 | peer *p; | |
1820 | const addr *ad; | |
1821 | ||
37941236 | 1822 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1823 | ad = p_addr(p); |
1824 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1825 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1826 | a_ok(a); |
410c8acf | 1827 | } |
1828 | } | |
1829 | ||
060ca767 | 1830 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1831 | { | |
1832 | peer *p; | |
1833 | const peerspec *ps; | |
1834 | ||
37941236 | 1835 | if ((p = a_findpeer(a, av[0])) != 0) { |
1836 | ps = p_spec(p); | |
f43df819 | 1837 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
fe2a5dcf MW |
1838 | a_info(a, "key=%s", p_tag(p), |
1839 | "current-key=%s", p->kx.kpub->tag, A_END); | |
1840 | a_info(a, "private-key=%s", p_privtag(p), | |
1841 | "current-private-key=%s", p->kx.kpriv->tag, A_END); | |
f43df819 | 1842 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); |
37941236 | 1843 | a_ok(a); |
060ca767 | 1844 | } |
060ca767 | 1845 | } |
1846 | ||
1847 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1848 | { | |
f43df819 MW |
1849 | a_info(a, "implementation=edgeware-tripe", A_END); |
1850 | a_info(a, "version=%s", VERSION, A_END); | |
1851 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1852 | a_ok(a); |
1853 | } | |
1854 | ||
c7053da9 | 1855 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1856 | { | |
1857 | peer *p; | |
1858 | stats *st; | |
1859 | ||
37941236 | 1860 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1861 | return; |
060ca767 | 1862 | |
1863 | st = p_stats(p); | |
f43df819 MW |
1864 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1865 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1866 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
1867 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
1868 | a_info(a, | |
1869 | "packets-out=%lu", st->n_out, | |
1870 | "bytes-out=%lu", st->sz_out, | |
1871 | A_END); | |
1872 | a_info(a, | |
1873 | "keyexch-packets-in=%lu", st->n_kxin, | |
1874 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
1875 | A_END); | |
1876 | a_info(a, | |
1877 | "keyexch-packets-out=%lu", st->n_kxout, | |
1878 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
1879 | A_END); | |
1880 | a_info(a, | |
1881 | "ip-packets-in=%lu", st->n_ipin, | |
1882 | "ip-bytes-in=%lu", st->sz_ipin, | |
1883 | A_END); | |
1884 | a_info(a, | |
e04c2d50 | 1885 | "ip-packets-out=%lu", st->n_ipout, |
18ad8913 MW |
1886 | "ip-bytes-out=%lu", st->sz_ipout, |
1887 | A_END); | |
f43df819 | 1888 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 1889 | a_ok(a); |
c7053da9 | 1890 | } |
1891 | ||
410c8acf | 1892 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1893 | { | |
1894 | peer *p; | |
f98df549 | 1895 | |
37941236 | 1896 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1897 | p_destroy(p); |
3cdc3f3a | 1898 | a_ok(a); |
410c8acf | 1899 | } |
1900 | } | |
1901 | ||
0ba8de86 | 1902 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1903 | { | |
1904 | peer *p; | |
f98df549 | 1905 | |
37941236 | 1906 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1907 | kx_start(&p->kx, 1); |
0ba8de86 | 1908 | a_ok(a); |
1909 | } | |
1910 | } | |
1911 | ||
de014da6 | 1912 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1913 | { p_keyreload(); a_ok(a); } | |
1914 | ||
410c8acf | 1915 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1916 | { | |
f43df819 | 1917 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1918 | a_ok(a); |
410c8acf | 1919 | a_quit(); |
1920 | } | |
1921 | ||
3cdc3f3a | 1922 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1923 | { | |
f43df819 | 1924 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1925 | a_ok(a); |
1926 | } | |
1927 | ||
42da2a58 | 1928 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1929 | { | |
1930 | int i; | |
f98df549 | 1931 | |
42da2a58 | 1932 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1933 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1934 | a_ok(a); |
1935 | } | |
1936 | ||
410c8acf | 1937 | /* --- The command table and help --- */ |
1938 | ||
1939 | typedef struct acmd { | |
1940 | const char *name; | |
1941 | const char *help; | |
1942 | unsigned argmin, argmax; | |
1943 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1944 | } acmd; | |
1945 | ||
1946 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1947 | ||
1948 | static const acmd acmdtab[] = { | |
9986f0b5 | 1949 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1950 | { "addr", "PEER", 1, 1, acmd_addr }, |
35c8b547 | 1951 | { "algs", "[PEER]", 0, 1, acmd_algs }, |
ff92ffd3 | 1952 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1953 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1954 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1955 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1956 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1957 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1958 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1959 | { "help", 0, 0, 0, acmd_help }, | |
1960 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1961 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1962 | { "kill", "PEER", 1, 1, acmd_kill }, |
1963 | { "list", 0, 0, 0, acmd_list }, | |
1964 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1965 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1966 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1967 | { "port", 0, 0, 0, acmd_port }, | |
1968 | { "quit", 0, 0, 0, acmd_quit }, | |
1969 | { "reload", 0, 0, 0, acmd_reload }, | |
1970 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1971 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
be6a1b7a MW |
1972 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
1973 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
1974 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
1975 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 1976 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 1977 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
1978 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
1979 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
1980 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
1981 | 2, 0xffff, acmd_svcsubmit }, | |
f43df819 | 1982 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1983 | #ifndef NTRACE |
f43df819 | 1984 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1985 | #endif |
f43df819 MW |
1986 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1987 | { "version", 0, 0, 0, acmd_version }, | |
1988 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
e04c2d50 | 1989 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, |
410c8acf | 1990 | { 0, 0, 0, 0, 0 } |
1991 | }; | |
1992 | ||
1993 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
1994 | { | |
1995 | const acmd *c; | |
f98df549 | 1996 | |
f43df819 MW |
1997 | for (c = acmdtab; c->name; c++) { |
1998 | if (c->help) | |
1999 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
e04c2d50 | 2000 | else |
f43df819 MW |
2001 | a_info(a, "%s", c->name, A_END); |
2002 | } | |
3cdc3f3a | 2003 | a_ok(a); |
410c8acf | 2004 | } |
2005 | ||
2006 | /*----- Connection handling -----------------------------------------------*/ | |
2007 | ||
c511e1f9 | 2008 | /* --- @a_destroypending@ --- * |
410c8acf | 2009 | * |
c511e1f9 | 2010 | * Arguments: --- |
fd3cf232 | 2011 | * |
2012 | * Returns: --- | |
2013 | * | |
c511e1f9 | 2014 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 2015 | */ |
2016 | ||
c511e1f9 | 2017 | static void a_destroypending(void) |
410c8acf | 2018 | { |
94593d1b | 2019 | admin *a, *aa, *head; |
de014da6 | 2020 | admin_bgop *bg, *bbg; |
be6a1b7a | 2021 | admin_service *svc, *ssvc; |
de014da6 | 2022 | |
94593d1b MW |
2023 | /* --- Destroy connections marked as pending --- * |
2024 | * | |
2025 | * Slightly messy. Killing clients may cause others to finally die. Make | |
2026 | * sure that they can be put on the list without clobbering anything or | |
2027 | * getting lost. | |
2028 | */ | |
fd3cf232 | 2029 | |
94593d1b MW |
2030 | while (a_dead) { |
2031 | head = a_dead; | |
2032 | a_dead = 0; | |
2033 | for (a = head; a; a = aa) { | |
2034 | aa = a->next; | |
2035 | assert(a->f & AF_DEAD); | |
c511e1f9 | 2036 | |
94593d1b | 2037 | /* --- Report what we're doing --- */ |
c511e1f9 | 2038 | |
94593d1b MW |
2039 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
2040 | a->seq); ) | |
c511e1f9 | 2041 | |
94593d1b | 2042 | /* --- If this is the foreground client then shut down --- */ |
46dde080 | 2043 | |
94593d1b MW |
2044 | if (a->f & AF_FOREGROUND) { |
2045 | T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); ) | |
2046 | a_warn("SERVER", "quit", "foreground-eof", A_END); | |
2047 | a_quit(); | |
2048 | } | |
46dde080 | 2049 | |
94593d1b | 2050 | /* --- Abort any background jobs in progress --- */ |
c511e1f9 | 2051 | |
94593d1b MW |
2052 | for (bg = a->bg; bg; bg = bbg) { |
2053 | bbg = bg->next; | |
2054 | bg->cancel(bg); | |
2055 | if (bg->tag) xfree(bg->tag); | |
2056 | xfree(bg); | |
2057 | } | |
c511e1f9 | 2058 | |
94593d1b | 2059 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a | 2060 | |
94593d1b MW |
2061 | for (svc = a->svcs; svc; svc = ssvc) { |
2062 | ssvc = svc->next; | |
2063 | a_svcrelease(svc); | |
2064 | } | |
2065 | a_jobtablefinal(&a->j); | |
be6a1b7a | 2066 | |
94593d1b | 2067 | /* --- Close file descriptors and selectory --- */ |
c511e1f9 | 2068 | |
94593d1b MW |
2069 | selbuf_destroy(&a->b); |
2070 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
2071 | close(a->w.fd); | |
2072 | if (a_stdin == a) a_stdin = 0; | |
c511e1f9 | 2073 | |
94593d1b | 2074 | /* --- Done --- */ |
c511e1f9 | 2075 | |
94593d1b MW |
2076 | DESTROY(a); |
2077 | } | |
410c8acf | 2078 | } |
060ca767 | 2079 | } |
2080 | ||
fd3cf232 | 2081 | /* --- @a_destroy@ --- * |
2082 | * | |
2083 | * Arguments: @admin *a@ = pointer to an admin block | |
2084 | * | |
2085 | * Returns: --- | |
2086 | * | |
2087 | * Use: Destroys an admin block. This requires a certain amount of | |
2088 | * care. | |
2089 | */ | |
2090 | ||
de014da6 | 2091 | static void freequeue(oqueue *q) |
2092 | { | |
2093 | obuf *o, *oo; | |
2094 | ||
2095 | for (o = q->hd; o; o = oo) { | |
2096 | oo = o->next; | |
2097 | xfree(o); | |
2098 | } | |
2099 | q->hd = q->tl = 0; | |
2100 | } | |
2101 | ||
fd3cf232 | 2102 | static void a_destroy(admin *a) |
2103 | { | |
fd3cf232 | 2104 | if (a->f & AF_DEAD) |
2105 | return; | |
2106 | ||
c511e1f9 MW |
2107 | if (a->next) a->next->prev = a->prev; |
2108 | if (a->prev) a->prev->next = a->next; | |
2109 | else admins = a->next; | |
fd3cf232 | 2110 | |
c511e1f9 | 2111 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 2112 | freequeue(&a->out); |
fd3cf232 | 2113 | |
c511e1f9 MW |
2114 | a->f |= AF_DEAD; |
2115 | a->next = a_dead; | |
2116 | a_dead = a; | |
fd3cf232 | 2117 | |
c511e1f9 | 2118 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2119 | } |
2120 | ||
410c8acf | 2121 | /* --- @a_line@ --- * |
2122 | * | |
2123 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2124 | * @size_t len@ = length of the line |
410c8acf | 2125 | * @void *vp@ = pointer to my admin block |
2126 | * | |
2127 | * Returns: --- | |
2128 | * | |
2129 | * Use: Handles a line of input. | |
2130 | */ | |
2131 | ||
3008eabf | 2132 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2133 | { |
2134 | admin *a = vp; | |
2135 | const acmd *c; | |
6f88042a | 2136 | char *av[16 + 1]; |
410c8acf | 2137 | size_t ac; |
2138 | ||
8d0c7a83 | 2139 | TIMER; |
fd3cf232 | 2140 | if (a->f & AF_DEAD) |
2141 | return; | |
410c8acf | 2142 | if (!p) { |
de014da6 | 2143 | if (!a->bg) |
2144 | a_destroy(a); | |
2145 | else { | |
2146 | a->f |= AF_CLOSE; | |
2147 | selbuf_disable(&a->b); | |
2148 | } | |
410c8acf | 2149 | return; |
2150 | } | |
6f88042a | 2151 | ac = str_qsplit(p, av, N(av) - 1, 0, STRF_QUOTE); |
410c8acf | 2152 | if (!ac) |
2153 | return; | |
6f88042a | 2154 | av[ac] = 0; |
410c8acf | 2155 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2156 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2157 | ac--; |
f43df819 MW |
2158 | if (c->argmin > ac || ac > c->argmax) { |
2159 | if (!c->help) | |
2160 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
e04c2d50 | 2161 | else |
f43df819 | 2162 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); |
c511e1f9 | 2163 | } else |
410c8acf | 2164 | c->func(a, ac, av + 1); |
2165 | return; | |
2166 | } | |
2167 | } | |
f43df819 | 2168 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2169 | } |
2170 | ||
2171 | /* --- @a_create@ --- * | |
2172 | * | |
2173 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2174 | * @unsigned f@ = initial flags to set |
410c8acf | 2175 | * |
2176 | * Returns: --- | |
2177 | * | |
2178 | * Use: Creates a new admin connection. | |
2179 | */ | |
2180 | ||
3cdc3f3a | 2181 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2182 | { |
2183 | admin *a = CREATE(admin); | |
3cdc3f3a | 2184 | |
93bee2c4 | 2185 | T( static unsigned seq = 0; |
2186 | a->seq = seq++; ) | |
410c8acf | 2187 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2188 | a->bg = 0; |
042d5c20 | 2189 | a->ref = 0; |
be6a1b7a | 2190 | a->svcs = 0; |
5d46c0f8 | 2191 | a_jobtableinit(&a->j); |
3cdc3f3a | 2192 | a->f = f; |
de014da6 | 2193 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2194 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2195 | if (fd_out != fd_in) |
fd3cf232 | 2196 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2197 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2198 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2199 | a->out.hd = a->out.tl = 0; |
410c8acf | 2200 | a->next = admins; |
2201 | a->prev = 0; | |
de014da6 | 2202 | if (admins) admins->prev = a; |
410c8acf | 2203 | admins = a; |
2204 | } | |
2205 | ||
2206 | /* --- @a_accept@ --- * | |
2207 | * | |
2208 | * Arguments: @int fd@ = file descriptor to accept | |
2209 | * @unsigned mode@ = what to do | |
2210 | * @void *v@ = uninteresting pointer | |
2211 | * | |
2212 | * Returns: --- | |
2213 | * | |
2214 | * Use: Accepts a new admin connection. | |
2215 | */ | |
2216 | ||
2217 | static void a_accept(int fd, unsigned mode, void *v) | |
2218 | { | |
2219 | int nfd; | |
2220 | struct sockaddr_un sun; | |
2221 | size_t sz = sizeof(sun); | |
2222 | ||
2223 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2224 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2225 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2226 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2227 | return; |
2228 | } | |
3cdc3f3a | 2229 | a_create(nfd, nfd, 0); |
410c8acf | 2230 | } |
2231 | ||
c511e1f9 MW |
2232 | /* --- @a_preselect@ --- * |
2233 | * | |
2234 | * Arguments: --- | |
2235 | * | |
2236 | * Returns: --- | |
2237 | * | |
2238 | * Use: Informs the admin module that we're about to select again, | |
2239 | * and that it should do cleanup things it has delayed until a | |
2240 | * `safe' time. | |
2241 | */ | |
2242 | ||
2243 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2244 | ||
410c8acf | 2245 | /* --- @a_daemon@ --- * |
2246 | * | |
2247 | * Arguments: --- | |
2248 | * | |
2249 | * Returns: --- | |
2250 | * | |
2251 | * Use: Informs the admin module that it's a daemon. | |
2252 | */ | |
2253 | ||
f98df549 | 2254 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2255 | |
2256 | /* --- @a_init@ --- * | |
2257 | * | |
2258 | * Arguments: @const char *name@ = socket name to create | |
aa2405e8 MW |
2259 | * @uid_t u@ = user to own the socket |
2260 | * @gid_t g@ = group to own the socket | |
a9279e37 | 2261 | * @mode_t m@ = permissions to set on the socket |
410c8acf | 2262 | * |
2263 | * Returns: --- | |
2264 | * | |
2265 | * Use: Creates the admin listening socket. | |
2266 | */ | |
2267 | ||
a9279e37 | 2268 | void a_init(const char *name, uid_t u, gid_t g, mode_t m) |
410c8acf | 2269 | { |
2270 | int fd; | |
2271 | int n = 5; | |
2272 | struct sockaddr_un sun; | |
2273 | struct sigaction sa; | |
2274 | size_t sz; | |
879483d7 | 2275 | mode_t omask; |
410c8acf | 2276 | |
be6a1b7a MW |
2277 | /* --- Create services table --- */ |
2278 | ||
2279 | sym_create(&a_svcs); | |
2280 | ||
410c8acf | 2281 | /* --- Set up the socket address --- */ |
2282 | ||
2283 | sz = strlen(name) + 1; | |
2284 | if (sz > sizeof(sun.sun_path)) | |
2285 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
2286 | BURN(sun); | |
2287 | sun.sun_family = AF_UNIX; | |
2288 | memcpy(sun.sun_path, name, sz); | |
2289 | sz += offsetof(struct sockaddr_un, sun_path); | |
2290 | ||
2291 | /* --- Attempt to bind to the socket --- */ | |
2292 | ||
879483d7 | 2293 | omask = umask(0077); |
410c8acf | 2294 | again: |
2295 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
2296 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
2297 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
2298 | struct stat st; | |
2299 | int e = errno; | |
2300 | if (errno != EADDRINUSE) { | |
2301 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
2302 | sun.sun_path, strerror(e)); | |
2303 | } | |
2304 | if (!n) | |
2305 | die(EXIT_FAILURE, "too many retries; giving up"); | |
2306 | n--; | |
2307 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
2308 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
2309 | sun.sun_path); | |
2310 | } | |
2311 | if (errno != ECONNREFUSED) | |
2312 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
2313 | if (stat(sun.sun_path, &st)) { | |
2314 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
2315 | sun.sun_path, strerror(errno)); | |
2316 | } | |
2317 | if (!S_ISSOCK(st.st_mode)) | |
2318 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 2319 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2320 | unlink(sun.sun_path); |
2321 | close(fd); | |
2322 | goto again; | |
2323 | } | |
aa2405e8 | 2324 | if (chown(sun.sun_path, u, g)) { |
9e0161ce MW |
2325 | die(EXIT_FAILURE, "failed to set socket owner: %s", |
2326 | strerror(errno)); | |
aa2405e8 | 2327 | } |
a9279e37 MW |
2328 | if (chmod(sun.sun_path, m)) { |
2329 | die(EXIT_FAILURE, "failed to set socket permissions: %s", | |
2330 | strerror(errno)); | |
2331 | } | |
879483d7 | 2332 | umask(omask); |
410c8acf | 2333 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
2334 | if (listen(fd, 5)) | |
2335 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
2336 | ||
2337 | /* --- Listen to the socket --- */ | |
2338 | ||
2339 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2340 | sel_addfile(&sock); | |
2341 | sockname = name; | |
2342 | bres_init(&sel); | |
2343 | T( trace_custom(a_trace, 0); | |
2344 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2345 | flags |= F_INIT; | |
2346 | ||
2347 | /* --- Set up signal handlers --- */ | |
2348 | ||
2349 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2350 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 2351 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 2352 | sigaction(SIGINT, 0, &sa); |
2353 | if (sa.sa_handler != SIG_IGN) | |
2354 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2355 | } | |
2356 | ||
2357 | /*----- That's all, folks -------------------------------------------------*/ |