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[] = { |
8ed35e02 | 54 | #ifndef NTRACE |
3cdc3f3a | 55 | { 't', AF_TRACE, "trace messages" }, |
8ed35e02 | 56 | #endif |
3cdc3f3a | 57 | { 'n', AF_NOTE, "asynchronous notifications" }, |
58 | { 'w', AF_WARN, "warnings" }, | |
59 | { 'A', AF_ALLMSGS, "all of the above" }, | |
60 | { 0, 0, 0 } | |
61 | }; | |
62 | ||
410c8acf | 63 | /*----- Static variables --------------------------------------------------*/ |
64 | ||
65 | static admin *admins; | |
c511e1f9 | 66 | static admin *a_dead; |
410c8acf | 67 | static sel_file sock; |
68 | static const char *sockname; | |
be6a1b7a | 69 | static sym_table a_svcs; |
410c8acf | 70 | static unsigned flags = 0; |
71 | static admin *a_stdin = 0; | |
72 | static sig s_term, s_int, s_hup; | |
73 | ||
74 | #define F_DAEMON 1u | |
75 | #define F_INIT 2u | |
46dde080 | 76 | #define F_FOREGROUND 4u |
410c8acf | 77 | |
78 | #define T_RESOLVE SEC(30) | |
0ba8de86 | 79 | #define T_PING SEC(5) |
410c8acf | 80 | |
fd3cf232 | 81 | static void a_destroy(admin */*a*/); |
fd3cf232 | 82 | |
060ca767 | 83 | #define BOOL(x) ((x) ? "t" : "nil") |
84 | ||
fd3cf232 | 85 | /*----- Output functions --------------------------------------------------*/ |
86 | ||
87 | /* --- @trywrite@ --- * | |
88 | * | |
89 | * Arguments: @admin *a@ = pointer to an admin block | |
90 | * @const char *p@ = pointer to buffer to write | |
91 | * @size_t sz@ = size of data to write | |
92 | * | |
93 | * Returns: The number of bytes written, or less than zero on error. | |
94 | * | |
95 | * Use: Attempts to write data to a client. | |
96 | */ | |
97 | ||
98 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
99 | { | |
100 | ssize_t n, done = 0; | |
101 | ||
102 | again: | |
103 | if (!sz) | |
104 | return (done); | |
105 | n = write(a->w.fd, p, sz); | |
106 | if (n > 0) { | |
107 | done += n; | |
108 | p += n; | |
109 | sz -= n; | |
110 | goto again; | |
111 | } | |
112 | if (n < 0) { | |
113 | if (errno == EINTR) | |
114 | goto again; | |
115 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
116 | a_destroy(a); | |
f43df819 | 117 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 118 | return (-1); |
119 | } | |
120 | } | |
121 | return (done); | |
122 | } | |
123 | ||
de014da6 | 124 | /* --- @doqueue@ -- * |
fd3cf232 | 125 | * |
de014da6 | 126 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 127 | * @const char *p@ = pointer to buffer to write |
de014da6 | 128 | * @size_t sz@ = size of buffer |
fd3cf232 | 129 | * |
de014da6 | 130 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 131 | * |
de014da6 | 132 | * Use: Queues data to be written later. |
fd3cf232 | 133 | */ |
134 | ||
de014da6 | 135 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 136 | { |
fd3cf232 | 137 | obuf *o; |
de014da6 | 138 | int rc = 0; |
139 | size_t n; | |
fd3cf232 | 140 | |
de014da6 | 141 | o = q->tl; |
fd3cf232 | 142 | if (!o) |
de014da6 | 143 | rc = 1; |
fd3cf232 | 144 | else if (o->p_in < o->buf + OBUFSZ) |
145 | goto noalloc; | |
146 | ||
147 | do { | |
148 | o = xmalloc(sizeof(obuf)); | |
149 | o->next = 0; | |
150 | o->p_in = o->p_out = o->buf; | |
de014da6 | 151 | if (q->tl) |
152 | q->tl->next = o; | |
fd3cf232 | 153 | else |
de014da6 | 154 | q->hd = o; |
155 | q->tl = o; | |
fd3cf232 | 156 | |
157 | noalloc: | |
158 | n = o->buf + OBUFSZ - o->p_in; | |
159 | if (n > sz) | |
160 | n = sz; | |
161 | memcpy(o->p_in, p, n); | |
162 | o->p_in += n; | |
163 | p += n; | |
164 | sz -= n; | |
165 | } while (sz); | |
de014da6 | 166 | |
167 | return (rc); | |
168 | } | |
169 | ||
170 | /* --- @dosend@ --- * | |
171 | * | |
172 | * Arguemnts: @admin *a@ = pointer to an admin block | |
173 | * @const char *p@ = pointer to buffer to write | |
174 | * @size_t sz@ = size of data to write | |
175 | * | |
176 | * Returns: --- | |
177 | * | |
178 | * Use: Sends data to an admin client. | |
179 | */ | |
180 | ||
181 | static void dosend(admin *a, const char *p, size_t sz) | |
182 | { | |
183 | ssize_t n; | |
184 | ||
185 | if (a->f & AF_DEAD) | |
186 | return; | |
187 | if (!a->out.hd) { | |
188 | if ((n = trywrite(a, p, sz)) < 0) | |
189 | return; | |
190 | p += n; | |
191 | sz -= n; | |
192 | if (!sz) | |
193 | return; | |
194 | } | |
195 | if (doqueue(&a->out, p, sz)) | |
196 | sel_addfile(&a->w); | |
fd3cf232 | 197 | } |
198 | ||
199 | /* --- @a_flush@ --- * | |
200 | * | |
201 | * Arguments: @int fd@ = file descriptor | |
202 | * @unsigned mode@ = what's happening | |
203 | * @void *v@ = pointer to my admin block | |
204 | * | |
205 | * Returns: --- | |
206 | * | |
207 | * Use: Flushes buffers when a client is ready to read again. | |
208 | */ | |
209 | ||
210 | static void a_flush(int fd, unsigned mode, void *v) | |
211 | { | |
212 | admin *a = v; | |
213 | obuf *o, *oo; | |
214 | ssize_t n; | |
215 | ||
de014da6 | 216 | o = a->out.hd; |
fd3cf232 | 217 | while (o) { |
218 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
219 | return; | |
220 | o->p_out += n; | |
221 | if (o->p_in < o->p_out) | |
222 | break; | |
223 | oo = o; | |
224 | o = o->next; | |
225 | xfree(oo); | |
226 | } | |
de014da6 | 227 | a->out.hd = o; |
fd3cf232 | 228 | if (!o) { |
de014da6 | 229 | a->out.tl = 0; |
fd3cf232 | 230 | sel_rmfile(&a->w); |
231 | } | |
232 | } | |
233 | ||
410c8acf | 234 | /*----- Utility functions -------------------------------------------------*/ |
235 | ||
f43df819 MW |
236 | /* --- @a_vformat@ --- * |
237 | * | |
238 | * Arguments: @dstr *d@ = where to leave the formatted message | |
239 | * @const char *fmt@ = pointer to format string | |
240 | * @va_list ap@ = arguments in list | |
241 | * | |
242 | * Returns: --- | |
243 | * | |
7f73baaf MW |
244 | * Use: Main message token formatting driver. The arguments are |
245 | * interleaved formatting tokens and their parameters, finally | |
246 | * terminated by an entry @A_END@. | |
247 | * | |
248 | * Tokens recognized: | |
249 | * | |
250 | * * "*..." ... -- pretokenized @dstr_putf@-like string | |
251 | * | |
252 | * * "?ADDR" SOCKADDR -- a socket address, to be converted | |
253 | * | |
254 | * * "?B64" BUFFER SIZE -- binary data to be base64-encoded | |
255 | * | |
256 | * * "?TOKENS" VECTOR -- null-terminated vector of tokens | |
257 | * | |
258 | * * "?PEER" PEER -- peer's name | |
259 | * | |
260 | * * "?ERRNO" ERRNO -- system error code | |
261 | * | |
262 | * * "[!]..." ... -- @dstr_putf@-like string as single token | |
f43df819 MW |
263 | */ |
264 | ||
7f73baaf | 265 | void a_vformat(dstr *d, const char *fmt, va_list ap) |
f43df819 MW |
266 | { |
267 | dstr dd = DSTR_INIT; | |
268 | ||
269 | while (fmt) { | |
270 | if (*fmt == '*') { | |
6ebbf072 | 271 | if (d->len) dstr_putc(d, ' '); |
f43df819 MW |
272 | dstr_vputf(d, fmt + 1, &ap); |
273 | } else if (*fmt == '?') { | |
274 | if (strcmp(fmt, "?ADDR") == 0) { | |
275 | const addr *a = va_arg(ap, const addr *); | |
276 | switch (a->sa.sa_family) { | |
277 | case AF_INET: | |
0ed0735f MW |
278 | u_quotify(d, "INET"); |
279 | u_quotify(d, inet_ntoa(a->sin.sin_addr)); | |
f43df819 MW |
280 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); |
281 | break; | |
282 | default: | |
283 | abort(); | |
284 | } | |
285 | } else if (strcmp(fmt, "?B64") == 0) { | |
286 | const octet *p = va_arg(ap, const octet *); | |
287 | size_t n = va_arg(ap, size_t); | |
288 | base64_ctx b64; | |
289 | dstr_putc(d, ' '); | |
290 | base64_init(&b64); | |
291 | b64.indent = ""; | |
292 | b64.maxline = 0; | |
293 | base64_encode(&b64, p, n, d); | |
294 | base64_encode(&b64, 0, 0, d); | |
295 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
3331936b MW |
296 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
297 | const char *const *av = va_arg(ap, const char *const *); | |
0ed0735f | 298 | while (*av) u_quotify(d, *av++); |
f43df819 | 299 | } else if (strcmp(fmt, "?PEER") == 0) |
0ed0735f | 300 | u_quotify(d, p_name(va_arg(ap, peer *))); |
f43df819 MW |
301 | else if (strcmp(fmt, "?ERRNO") == 0) { |
302 | dstr_putf(d, " E%d", errno); | |
0ed0735f | 303 | u_quotify(d, strerror(errno)); |
f43df819 MW |
304 | } else |
305 | abort(); | |
306 | } else { | |
307 | if (*fmt == '!') fmt++; | |
308 | DRESET(&dd); | |
309 | dstr_vputf(&dd, fmt, &ap); | |
0ed0735f | 310 | u_quotify(d, dd.buf); |
f43df819 MW |
311 | } |
312 | fmt = va_arg(ap, const char *); | |
313 | } | |
314 | ||
315 | dstr_destroy(&dd); | |
316 | } | |
317 | ||
f241e36c MW |
318 | /* --- @a_format@ --- * |
319 | * | |
320 | * Arguments: @dstr *d@ = where to leave the formatted message | |
321 | * @const char *fmt@ = pointer to format string | |
322 | * | |
323 | * Returns: --- | |
324 | * | |
325 | * Use: Writes a tokenized message into a string, for later | |
326 | * presentation. | |
327 | */ | |
328 | ||
329 | void a_format(dstr *d, const char *fmt, ...) | |
330 | { | |
331 | va_list ap; | |
332 | ||
333 | va_start(ap, fmt); | |
334 | a_vformat(d, fmt, ap); | |
335 | va_end(ap); | |
336 | } | |
337 | ||
3cdc3f3a | 338 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 339 | * |
340 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 341 | * @const char *status@ = status code to report |
342 | * @const char *tag@ = tag string, or null | |
410c8acf | 343 | * @const char *fmt@ = pointer to format string |
3cdc3f3a | 344 | * @va_list ap@ = arguments in list |
410c8acf | 345 | * @...@ = other arguments |
346 | * | |
347 | * Returns: --- | |
348 | * | |
349 | * Use: Sends a message to an admin connection. | |
350 | */ | |
351 | ||
de014da6 | 352 | static void a_vwrite(admin *a, const char *status, const char *tag, |
353 | const char *fmt, va_list ap) | |
410c8acf | 354 | { |
410c8acf | 355 | dstr d = DSTR_INIT; |
f98df549 | 356 | |
de014da6 | 357 | if (tag) dstr_puts(&d, "BG"); |
358 | dstr_puts(&d, status); | |
0ed0735f | 359 | if (tag) u_quotify(&d, tag); |
f43df819 | 360 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 361 | dstr_putc(&d, '\n'); |
362 | dosend(a, d.buf, d.len); | |
363 | dstr_destroy(&d); | |
364 | } | |
365 | ||
de014da6 | 366 | static void a_write(admin *a, const char *status, const char *tag, |
367 | const char *fmt, ...) | |
3cdc3f3a | 368 | { |
369 | va_list ap; | |
f98df549 | 370 | |
410c8acf | 371 | va_start(ap, fmt); |
de014da6 | 372 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf | 373 | va_end(ap); |
3cdc3f3a | 374 | } |
375 | ||
376 | /* --- @a_ok@, @a_info@, @a_fail@ --- * | |
377 | * | |
378 | * Arguments: @admin *a@ = connection | |
379 | * @const char *fmt@ = format string | |
380 | * @...@ = other arguments | |
381 | * | |
382 | * Returns: --- | |
383 | * | |
384 | * Use: Convenience functions for @a_write@. | |
385 | */ | |
386 | ||
f43df819 | 387 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 388 | |
389 | static void a_info(admin *a, const char *fmt, ...) | |
390 | { | |
391 | va_list ap; | |
f98df549 | 392 | |
3cdc3f3a | 393 | va_start(ap, fmt); |
de014da6 | 394 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a | 395 | va_end(ap); |
396 | } | |
397 | ||
398 | static void a_fail(admin *a, const char *fmt, ...) | |
399 | { | |
400 | va_list ap; | |
f98df549 | 401 | |
3cdc3f3a | 402 | va_start(ap, fmt); |
de014da6 | 403 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a | 404 | va_end(ap); |
405 | } | |
406 | ||
407 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
408 | * | |
409 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 410 | * @const char *status@ = status string |
3cdc3f3a | 411 | * @const char *fmt@ = pointer to format string |
de014da6 | 412 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 413 | * @size_t sz@ = size of raw string |
414 | * @va_list ap@ = arguments in list | |
415 | * @...@ = other arguments | |
416 | * | |
417 | * Returns: --- | |
418 | * | |
419 | * Use: Write a message to all admin connections matched by the given | |
420 | * filter. | |
421 | */ | |
422 | ||
de014da6 | 423 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 424 | const char *p, size_t sz) |
425 | { | |
426 | admin *a, *aa; | |
427 | dstr d = DSTR_INIT; | |
e04c2d50 | 428 | |
3cdc3f3a | 429 | if (!(flags & F_INIT)) |
430 | return; | |
de014da6 | 431 | dstr_puts(&d, status); |
432 | if (p) { | |
433 | dstr_putc(&d, ' '); | |
3cdc3f3a | 434 | dstr_putm(&d, p, sz); |
de014da6 | 435 | } |
3cdc3f3a | 436 | dstr_putc(&d, '\n'); |
437 | p = d.buf; | |
438 | sz = d.len; | |
439 | for (a = admins; a; a = aa) { | |
440 | aa = a->next; | |
441 | if ((a->f & f_and) == f_eq) | |
442 | dosend(a, d.buf, d.len); | |
443 | } | |
410c8acf | 444 | dstr_destroy(&d); |
445 | } | |
446 | ||
b9adb829 | 447 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 448 | const char *fmt, va_list ap) |
449 | { | |
450 | dstr d = DSTR_INIT; | |
451 | ||
452 | if (!(flags & F_INIT)) | |
453 | return; | |
f43df819 | 454 | a_vformat(&d, fmt, ap); |
b9adb829 | 455 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 456 | dstr_destroy(&d); |
457 | } | |
458 | ||
b9adb829 | 459 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 460 | const char *fmt, ...) |
461 | { | |
462 | va_list ap; | |
f98df549 | 463 | |
3cdc3f3a | 464 | va_start(ap, fmt); |
b9adb829 | 465 | a_valert(f_and, f_eq, status, fmt, ap); |
3cdc3f3a | 466 | va_end(ap); |
467 | } | |
3cdc3f3a | 468 | |
410c8acf | 469 | /* --- @a_warn@ --- * |
470 | * | |
471 | * Arguments: @const char *fmt@ = pointer to format string | |
472 | * @...@ = other arguments | |
473 | * | |
474 | * Returns: --- | |
475 | * | |
476 | * Use: Informs all admin connections of a warning. | |
477 | */ | |
478 | ||
479 | void a_warn(const char *fmt, ...) | |
480 | { | |
481 | va_list ap; | |
410c8acf | 482 | |
410c8acf | 483 | va_start(ap, fmt); |
3cdc3f3a | 484 | if (flags & F_INIT) |
485 | a_valert(0, 0, "WARN", fmt, ap); | |
410c8acf | 486 | else { |
f43df819 | 487 | dstr d = DSTR_INIT; |
3cdc3f3a | 488 | fprintf(stderr, "%s: ", QUIS); |
f43df819 MW |
489 | a_vformat(&d, fmt, ap); |
490 | dstr_putc(&d, '\n'); | |
491 | dstr_write(&d, stderr); | |
492 | dstr_destroy(&d); | |
410c8acf | 493 | } |
3cdc3f3a | 494 | va_end(ap); |
410c8acf | 495 | } |
496 | ||
497 | /* --- @a_trace@ --- * | |
498 | * | |
499 | * Arguments: @const char *p@ = pointer to a buffer | |
500 | * @size_t sz@ = size of the buffer | |
501 | * @void *v@ = uninteresting pointer | |
502 | * | |
503 | * Returns: --- | |
504 | * | |
3cdc3f3a | 505 | * Use: Custom trace output handler. Sends trace messages to |
506 | * interested admin connections. | |
410c8acf | 507 | */ |
508 | ||
509 | #ifndef NTRACE | |
510 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 511 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 512 | #endif |
513 | ||
3cdc3f3a | 514 | /* --- @a_notify@ --- * |
515 | * | |
516 | * Arguments: @const char *fmt@ = pointer to format string | |
517 | * @...@ = other arguments | |
518 | * | |
519 | * Returns: --- | |
520 | * | |
521 | * Use: Sends a notification to interested admin connections. | |
522 | */ | |
523 | ||
524 | void a_notify(const char *fmt, ...) | |
525 | { | |
526 | va_list ap; | |
527 | ||
528 | va_start(ap, fmt); | |
529 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); | |
530 | va_end(ap); | |
531 | } | |
532 | ||
410c8acf | 533 | /* --- @a_quit@ --- * |
534 | * | |
535 | * Arguments: --- | |
536 | * | |
537 | * Returns: --- | |
538 | * | |
539 | * Use: Shuts things down nicely. | |
540 | */ | |
541 | ||
542 | void a_quit(void) | |
543 | { | |
544 | close(sock.fd); | |
545 | unlink(sockname); | |
c8e02c8a | 546 | FOREACH_PEER(p, { p_destroy(p); }); |
388e0319 | 547 | ps_quit(); |
410c8acf | 548 | exit(0); |
549 | } | |
550 | ||
551 | /* --- @a_sigdie@ --- * | |
552 | * | |
553 | * Arguments: @int sig@ = signal number | |
554 | * @void *v@ = an uninteresting argument | |
555 | * | |
556 | * Returns: --- | |
557 | * | |
558 | * Use Shuts down on receipt of a fatal signal. | |
559 | */ | |
560 | ||
561 | static void a_sigdie(int sig, void *v) | |
562 | { | |
563 | char *p; | |
564 | char buf[20]; | |
565 | ||
566 | switch (sig) { | |
567 | case SIGTERM: p = "SIGTERM"; break; | |
568 | case SIGINT: p = "SIGINT"; break; | |
569 | default: | |
3cdc3f3a | 570 | sprintf(buf, "%i", sig); |
410c8acf | 571 | p = buf; |
572 | break; | |
573 | } | |
f43df819 | 574 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 575 | a_quit(); |
576 | } | |
577 | ||
578 | /* --- @a_sighup@ --- * | |
579 | * | |
580 | * Arguments: @int sig@ = signal number | |
581 | * @void *v@ = an uninteresting argument | |
582 | * | |
583 | * Returns: --- | |
584 | * | |
585 | * Use Logs a message about SIGHUP not being useful. | |
586 | */ | |
587 | ||
588 | static void a_sighup(int sig, void *v) | |
f98df549 | 589 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 590 | |
0ba8de86 | 591 | /* --- @a_parsetime@ --- * |
592 | * | |
593 | * Arguments; @const char *p@ = time string to parse | |
594 | * | |
595 | * Returns: Time in seconds, or @< 0@ on error. | |
596 | */ | |
597 | ||
598 | static long a_parsetime(const char *p) | |
599 | { | |
600 | char *q; | |
601 | long t = strtol(p, &q, 0); | |
602 | ||
603 | switch (*q) { | |
604 | case 'd': t *= 24; | |
605 | case 'h': t *= 60; | |
606 | case 'm': t *= 60; | |
607 | case 's': if (q[1] != 0) | |
e04c2d50 | 608 | default: t = -1; |
0ba8de86 | 609 | case 0: break; |
610 | } | |
e04c2d50 | 611 | return (t); |
0ba8de86 | 612 | } |
613 | ||
37941236 | 614 | /* --- @a_findpeer@ --- * |
615 | * | |
616 | * Arguments: @admin *a@ = admin connection | |
617 | * @const char *pn@ = peer name | |
618 | * | |
619 | * Returns: The peer, or null if not there. | |
620 | * | |
621 | * Use: Finds a peer, reporting an error if it failed. | |
622 | */ | |
623 | ||
624 | static peer *a_findpeer(admin *a, const char *pn) | |
625 | { | |
626 | peer *p; | |
627 | ||
628 | if ((p = p_find(pn)) == 0) | |
f43df819 | 629 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 630 | return (p); |
631 | } | |
632 | ||
de014da6 | 633 | /*----- Backgrounded operations -------------------------------------------*/ |
634 | ||
060ca767 | 635 | #define BGTAG(bg) \ |
636 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
637 | ||
ff92ffd3 MW |
638 | /* --- @a_bgfind@ --- * |
639 | * | |
640 | * Arguments: @admin *a@ = a client block | |
641 | * @const char *tag@ = the requested tag | |
642 | * | |
643 | * Returns: The requested background job, or null. | |
644 | */ | |
645 | ||
646 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
647 | { | |
648 | admin_bgop *bg; | |
649 | ||
650 | for (bg = a->bg; bg; bg = bg->next) { | |
651 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
652 | return (bg); | |
653 | } | |
654 | return (0); | |
655 | } | |
656 | ||
de014da6 | 657 | /* --- @a_bgrelease@ --- * |
658 | * | |
659 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
660 | * | |
661 | * Returns: --- | |
662 | * | |
663 | * Use: Removes a backgrounded operation from the queue, since | |
664 | * (presumably) it's done. | |
665 | */ | |
666 | ||
667 | static void a_bgrelease(admin_bgop *bg) | |
668 | { | |
669 | admin *a = bg->a; | |
670 | ||
060ca767 | 671 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
672 | if (bg->tag) xfree(bg->tag); | |
673 | else selbuf_enable(&a->b); | |
674 | if (bg->next) bg->next->prev = bg->prev; | |
675 | if (bg->prev) bg->prev->next = bg->next; | |
676 | else a->bg = bg->next; | |
de014da6 | 677 | xfree(bg); |
547a9c13 | 678 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 679 | } |
680 | ||
681 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
682 | * | |
683 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
684 | * @const char *fmt@ = format string | |
685 | * @...@ = other arguments | |
686 | * | |
687 | * Returns: --- | |
688 | * | |
689 | * Use: Convenience functions for @a_write@. | |
690 | */ | |
691 | ||
692 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 693 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 694 | |
695 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
696 | { | |
697 | va_list ap; | |
698 | va_start(ap, fmt); | |
699 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); | |
700 | va_end(ap); | |
701 | } | |
702 | ||
703 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
704 | { | |
705 | va_list ap; | |
706 | va_start(ap, fmt); | |
707 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); | |
708 | va_end(ap); | |
709 | } | |
710 | ||
711 | /* --- @a_bgadd@ --- * | |
712 | * | |
713 | * Arguments: @admin *a@ = administration connection | |
714 | * @admin_bgop *bg@ = pointer to background operation | |
715 | * @const char *tag@ = background tag, or null for foreground | |
716 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
717 | * | |
ff92ffd3 | 718 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 719 | * |
720 | * Use: Links a background job into the list. | |
721 | */ | |
722 | ||
ff92ffd3 MW |
723 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
724 | void (*cancel)(admin_bgop *)) | |
de014da6 | 725 | { |
ff92ffd3 MW |
726 | if (tag) { |
727 | if (a_bgfind(a, tag)) { | |
728 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
729 | return (-1); | |
730 | } | |
de014da6 | 731 | bg->tag = xstrdup(tag); |
ff92ffd3 | 732 | } |
de014da6 | 733 | else { |
734 | bg->tag = 0; | |
735 | selbuf_disable(&a->b); | |
736 | } | |
737 | bg->a = a; | |
738 | bg->cancel = cancel; | |
739 | bg->next = a->bg; | |
740 | bg->prev = 0; | |
060ca767 | 741 | if (a->bg) a->bg->prev = bg; |
de014da6 | 742 | a->bg = bg; |
060ca767 | 743 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 744 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 745 | return (0); |
de014da6 | 746 | } |
747 | ||
5d46c0f8 MW |
748 | /*----- Job table manipulation --------------------------------------------*/ |
749 | ||
750 | #define JOB_SHIFT 16 | |
751 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
752 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
753 | ||
754 | #define JOB_END 0xfffffffful | |
755 | ||
756 | static unsigned long a_joboffset; | |
757 | ||
758 | /* --- @a_jobidencode@ --- * | |
759 | * | |
760 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
761 | * | |
762 | * Returns: A jobid for this job, in an internal static buffer. | |
763 | * | |
764 | * Use: Constructs a jobid. In order to dissuade people from | |
765 | * predicting jobids, we obfuscate them. | |
766 | * | |
767 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
768 | * are an index into a big array. The high 16 bits are a | |
769 | * sequence number recording how many times that slot has been | |
770 | * reused. | |
771 | * | |
772 | * This `raw' jobid is then obfuscated by adding a randomly- | |
773 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
774 | * odd constant. | |
775 | */ | |
776 | ||
777 | static const char *a_jobidencode(admin_svcop *svc) | |
778 | { | |
779 | admin_jobtable *j = &svc->prov->j; | |
780 | static char buf[10]; | |
781 | unsigned long pre; | |
782 | unsigned seq; | |
783 | ||
784 | assert(svc->index <= JOB_INDEXMASK); | |
785 | seq = j->v[svc->index].seq; | |
786 | assert(seq <= JOB_SEQMASK); | |
787 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
788 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
789 | return (buf); | |
790 | } | |
791 | ||
792 | /* --- @a_jobiddecode@ --- * | |
793 | * | |
794 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
795 | * @const char *jid@ = pointer to a jobid string | |
796 | * | |
797 | * Returns: A pointer to the job's @svcop@ structure. | |
798 | */ | |
799 | ||
800 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
801 | { | |
802 | unsigned i; | |
803 | unsigned long pre; | |
804 | ||
805 | if (jid[0] != 'J') | |
806 | return (0); | |
807 | for (i = 1; i < 9; i++) { | |
808 | if (!isxdigit((unsigned char)jid[i])) | |
809 | return (0); | |
810 | } | |
811 | if (jid[9] != 0) | |
812 | return (0); | |
813 | pre = strtoul(jid + 1, 0, 16); | |
814 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
815 | i = pre & JOB_INDEXMASK; | |
816 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
817 | return (0); | |
818 | return (j->v[i].u.op); | |
819 | } | |
820 | ||
821 | /* --- @a_jobcreate@ --- * | |
822 | * | |
823 | * Arguments: @admin *a@ = pointer to administration client | |
824 | * | |
825 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
826 | * | |
827 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
828 | */ | |
829 | ||
830 | static admin_svcop *a_jobcreate(admin *a) | |
831 | { | |
832 | admin_svcop *svc; | |
833 | unsigned i; | |
834 | unsigned sz; | |
835 | admin_jobtable *j = &a->j; | |
836 | ||
837 | if (j->free != JOB_END) { | |
838 | i = j->free; | |
839 | j->free = j->v[i].u.next; | |
840 | } else { | |
841 | if (j->n == j->sz) { | |
842 | if (j->sz > JOB_INDEXMASK) | |
843 | return (0); | |
844 | sz = j->sz; | |
845 | if (!sz) { | |
846 | j->sz = 16; | |
847 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
848 | } else { | |
849 | j->sz = sz << 1; | |
850 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
851 | } | |
852 | } | |
853 | i = j->n++; | |
854 | j->v[i].seq = 0; | |
855 | } | |
856 | svc = xmalloc(sizeof(*svc)); | |
857 | svc->index = i; | |
858 | svc->prov = a; | |
859 | svc->next = j->active; | |
860 | svc->prev = 0; | |
861 | if (j->active) j->active->prev = svc; | |
862 | j->active = svc; | |
863 | j->v[i].u.op = svc; | |
864 | IF_TRACING(T_ADMIN, { | |
865 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
866 | }) | |
867 | return (svc); | |
868 | } | |
869 | ||
870 | /* --- @a_jobdestroy@ --- * | |
871 | * | |
872 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
873 | * | |
874 | * Returns: --- | |
875 | * | |
876 | * Use: Frees up a completed (or cancelled) job. | |
877 | */ | |
878 | ||
879 | static void a_jobdestroy(admin_svcop *svc) | |
880 | { | |
881 | admin *a = svc->prov; | |
882 | admin_jobtable *j = &a->j; | |
883 | unsigned i = svc->index; | |
884 | ||
885 | IF_TRACING(T_ADMIN, { | |
886 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
887 | }) | |
888 | assert(j->v[i].u.op = svc); | |
889 | j->v[i].u.next = j->free; | |
890 | j->v[i].seq++; | |
891 | j->free = i; | |
892 | if (svc->next) svc->next->prev = svc->prev; | |
893 | if (svc->prev) svc->prev->next = svc->next; | |
894 | else j->active = svc->next; | |
895 | } | |
896 | ||
897 | /* --- @a_jobtableinit@ --- * | |
898 | * | |
899 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
900 | * | |
901 | * Returns: --- | |
902 | * | |
903 | * Use: Initializes a job table. | |
904 | */ | |
905 | ||
906 | static void a_jobtableinit(admin_jobtable *j) | |
907 | { | |
908 | if (!a_joboffset) | |
909 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
910 | j->n = j->sz = 0; | |
911 | j->active = 0; | |
912 | j->free = JOB_END; | |
913 | j->v = 0; | |
914 | } | |
915 | ||
916 | /* --- @a_jobtablefinal@ --- * | |
917 | * | |
918 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
919 | * | |
920 | * Returns: --- | |
921 | * | |
922 | * Use: Closes down a job table. | |
923 | */ | |
924 | ||
925 | static void a_jobtablefinal(admin_jobtable *j) | |
926 | { | |
927 | admin_svcop *svc, *ssvc; | |
928 | ||
929 | for (svc = j->active; svc; svc = ssvc) { | |
930 | ssvc = svc->next; | |
931 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
932 | a_bgrelease(&svc->bg); | |
933 | } | |
934 | if (j->v) xfree(j->v); | |
935 | } | |
936 | ||
be6a1b7a MW |
937 | /*----- Services infrastructure -------------------------------------------*/ |
938 | ||
939 | /* --- @a_svcfind@ --- * | |
940 | * | |
941 | * Arguments: @admin *a@ = the requesting client | |
942 | * @const char *name@ = service name wanted | |
943 | * | |
944 | * Returns: The service requested, or null. | |
945 | * | |
946 | * Use: Finds a service; reports an error if the service couldn't be | |
947 | * found. | |
948 | */ | |
949 | ||
950 | static admin_service *a_svcfind(admin *a, const char *name) | |
951 | { | |
952 | admin_service *svc; | |
953 | ||
954 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
955 | a_fail(a, "unknown-service", "%s", name, A_END); | |
956 | return (0); | |
957 | } | |
958 | return (svc); | |
959 | } | |
960 | ||
961 | /* --- @a_svcunlink@ --- * | |
962 | * | |
963 | * Arguments: @admin_service *svc@ = pointer to service structure | |
964 | * | |
965 | * Returns: --- | |
966 | * | |
967 | * Use: Unlinks the service from its provider, without issuing a | |
968 | * message or freeing the structure. The version string is | |
969 | * freed, however. | |
970 | */ | |
971 | ||
972 | static void a_svcunlink(admin_service *svc) | |
973 | { | |
974 | if (svc->next) | |
975 | svc->next->prev = svc->prev; | |
976 | if (svc->prev) | |
977 | svc->prev->next = svc->next; | |
978 | else | |
979 | svc->prov->svcs = svc->next; | |
980 | xfree(svc->version); | |
981 | } | |
982 | ||
983 | /* --- @a_svcrelease@ --- * | |
984 | * | |
985 | * Arguments: @admin_service *svc@ = pointer to service structure | |
986 | * | |
987 | * Returns: --- | |
988 | * | |
989 | * Use: Releases a service and frees its structure. | |
990 | */ | |
991 | ||
992 | static void a_svcrelease(admin_service *svc) | |
993 | { | |
994 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
995 | a_svcunlink(svc); | |
996 | sym_remove(&a_svcs, svc); | |
de014da6 | 997 | } |
998 | ||
37941236 | 999 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 1000 | |
37941236 | 1001 | /* --- @a_resolved@ --- * |
de014da6 | 1002 | * |
37941236 | 1003 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
1004 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1005 | * |
1006 | * Returns: --- | |
1007 | * | |
37941236 | 1008 | * Use: Handles a completed name resolution. |
de014da6 | 1009 | */ |
1010 | ||
37941236 | 1011 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 1012 | { |
37941236 | 1013 | admin_resop *r = v; |
1014 | ||
1015 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
1016 | TIMER; | |
1017 | if (!h) { | |
f43df819 | 1018 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 1019 | r->func(r, ARES_FAIL); |
1020 | } else { | |
1021 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
1022 | r->func(r, ARES_OK); | |
1023 | } | |
1024 | sel_rmtimer(&r->t); | |
1025 | xfree(r->addr); | |
1026 | a_bgrelease(&r->bg); | |
e04c2d50 | 1027 | } |
de014da6 | 1028 | |
37941236 | 1029 | /* --- @a_restimer@ --- * |
de014da6 | 1030 | * |
37941236 | 1031 | * Arguments: @struct timeval *tv@ = timer |
1032 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1033 | * |
1034 | * Returns: --- | |
1035 | * | |
37941236 | 1036 | * Use: Times out a resolver. |
de014da6 | 1037 | */ |
1038 | ||
37941236 | 1039 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 1040 | { |
37941236 | 1041 | admin_resop *r = v; |
1042 | ||
1043 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1044 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1045 | r->func(r, ARES_FAIL); |
1046 | bres_abort(&r->r); | |
1047 | xfree(r->addr); | |
1048 | a_bgrelease(&r->bg); | |
de014da6 | 1049 | } |
1050 | ||
37941236 | 1051 | /* --- @a_rescancel@ --- * |
de014da6 | 1052 | * |
37941236 | 1053 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1054 | * |
1055 | * Returns: --- | |
1056 | * | |
37941236 | 1057 | * Use: Cancels an add operation. |
de014da6 | 1058 | */ |
1059 | ||
37941236 | 1060 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1061 | { |
37941236 | 1062 | admin_resop *r = (admin_resop *)bg; |
1063 | ||
1064 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1065 | r->func(r, ARES_FAIL); | |
1066 | sel_rmtimer(&r->t); | |
1067 | xfree(r->addr); | |
1068 | bres_abort(&r->r); | |
de014da6 | 1069 | } |
37941236 | 1070 | |
1071 | /* --- @a_resolve@ --- * | |
410c8acf | 1072 | * |
37941236 | 1073 | * Arguments: @admin *a@ = administration connection |
1074 | * @admin_resop *r@ = resolver operation to run | |
1075 | * @const char *tag@ = background operation tag | |
1076 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1077 | * @unsigned ac@ = number of remaining arguments | |
1078 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1079 | * |
1080 | * Returns: --- | |
1081 | * | |
37941236 | 1082 | * Use: Cranks up a resolver job. |
410c8acf | 1083 | */ |
1084 | ||
37941236 | 1085 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1086 | void (*func)(struct admin_resop *, int), | |
1087 | unsigned ac, char *av[]) | |
410c8acf | 1088 | { |
37941236 | 1089 | struct timeval tv; |
1090 | unsigned long pt; | |
1091 | char *p; | |
1092 | int i = 0; | |
fd3cf232 | 1093 | |
37941236 | 1094 | /* --- Fill in the easy bits of address --- */ |
1095 | ||
452bf3f6 | 1096 | r->bg.tag = "<starting>"; |
37941236 | 1097 | r->addr = 0; |
1098 | r->func = func; | |
1099 | if (mystrieq(av[i], "inet")) i++; | |
165efde7 MW |
1100 | if (ac - i != 1 && ac - i != 2) { |
1101 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS [PORT]", A_END); | |
37941236 | 1102 | goto fail; |
1103 | } | |
1104 | r->sa.sin.sin_family = AF_INET; | |
1105 | r->sasz = sizeof(r->sa.sin); | |
1106 | r->addr = xstrdup(av[i]); | |
6f88042a | 1107 | if (!av[i + 1]) |
165efde7 MW |
1108 | pt = TRIPE_PORT; |
1109 | else { | |
1110 | pt = strtoul(av[i + 1], &p, 0); | |
1111 | if (*p) { | |
1112 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1113 | if (!s) { | |
1114 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); | |
1115 | goto fail; | |
1116 | } | |
1117 | pt = ntohs(s->s_port); | |
37941236 | 1118 | } |
410c8acf | 1119 | } |
37941236 | 1120 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1121 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1122 | goto fail; |
1123 | } | |
1124 | r->sa.sin.sin_port = htons(pt); | |
1125 | ||
1126 | /* --- Report backgrounding --- * | |
1127 | * | |
1128 | * Do this for consistency of interface, even if we're going to get the | |
1129 | * answer straight away. | |
1130 | */ | |
1131 | ||
ff92ffd3 MW |
1132 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1133 | goto fail; | |
37941236 | 1134 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
1135 | a->seq, BGTAG(r), r->addr); ) | |
1136 | ||
1137 | /* --- If the name is numeric, do it the easy way --- */ | |
e04c2d50 | 1138 | |
37941236 | 1139 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { |
1140 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1141 | func(r, ARES_OK); | |
1142 | xfree(r->addr); | |
1143 | a_bgrelease(&r->bg); | |
1144 | return; | |
1145 | } | |
1146 | ||
1147 | /* --- Store everything for later and crank up the resolver --- */ | |
1148 | ||
1149 | gettimeofday(&tv, 0); | |
1150 | tv.tv_sec += T_RESOLVE; | |
1151 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
1152 | bres_byname(&r->r, r->addr, a_resolved, r); | |
1153 | return; | |
1154 | ||
1155 | fail: | |
1156 | func(r, ARES_FAIL); | |
1157 | if (r->addr) xfree(r->addr); | |
1158 | xfree(r); | |
410c8acf | 1159 | } |
1160 | ||
e7a4d919 MW |
1161 | /*----- Option parsing ----------------------------------------------------*/ |
1162 | ||
1163 | #define OPTIONS(argc, argv, guts) do { \ | |
1164 | char **o_av = argv; \ | |
1165 | for (;; o_av++) { \ | |
1166 | if (!*o_av) \ | |
1167 | break; \ | |
1168 | if (mystrieq(*o_av, "--")) { \ | |
1169 | o_av++; \ | |
1170 | break; \ | |
1171 | } \ | |
1172 | guts \ | |
1173 | if (**o_av == '-') \ | |
1174 | goto bad_syntax; \ | |
1175 | break; \ | |
1176 | } \ | |
1177 | argc -= o_av - argv; \ | |
1178 | argv = o_av; \ | |
1179 | } while (0) | |
1180 | ||
1181 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1182 | ||
1183 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1184 | const char *arg; \ | |
1185 | arg = *++o_av; \ | |
1186 | if (!arg) goto bad_syntax; \ | |
1187 | guts \ | |
1188 | }) | |
1189 | ||
1190 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1191 | long arg; \ | |
1192 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1193 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1194 | goto fail; \ | |
1195 | } \ | |
1196 | guts \ | |
1197 | }) | |
1198 | ||
37941236 | 1199 | /*----- Adding peers ------------------------------------------------------*/ |
1200 | ||
1201 | /* --- @a_doadd@ --- * | |
410c8acf | 1202 | * |
37941236 | 1203 | * Arguments: @admin_resop *r@ = resolver operation |
1204 | * @int rc@ = how it worked | |
410c8acf | 1205 | * |
1206 | * Returns: --- | |
1207 | * | |
37941236 | 1208 | * Use: Handles a completed resolution. |
410c8acf | 1209 | */ |
1210 | ||
37941236 | 1211 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1212 | { |
37941236 | 1213 | admin_addop *add = (admin_addop *)r; |
1214 | ||
1215 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1216 | ||
1217 | if (rc == ARES_OK) { | |
1218 | add->peer.sasz = add->r.sasz; | |
1219 | add->peer.sa = add->r.sa; | |
c8e02c8a MW |
1220 | if (p_findbyaddr(&add->r.sa)) |
1221 | a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END); | |
1222 | else if (p_find(add->peer.name)) | |
f43df819 | 1223 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 1224 | else if (!p_create(&add->peer)) |
f43df819 | 1225 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 1226 | else |
1227 | a_bgok(&add->r.bg); | |
1228 | } | |
de014da6 | 1229 | |
48b84569 | 1230 | if (add->peer.tag) xfree(add->peer.tag); |
37941236 | 1231 | xfree(add->peer.name); |
410c8acf | 1232 | } |
1233 | ||
1234 | /* --- @acmd_add@ --- * | |
1235 | * | |
1236 | * Arguments: @admin *a@ = connection which requested the addition | |
1237 | * @unsigned ac@ = argument count | |
1238 | * @char *av[]@ = pointer to the argument list | |
1239 | * | |
1240 | * Returns: --- | |
1241 | * | |
1242 | * Use: Adds a new peer. | |
1243 | */ | |
1244 | ||
1245 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
1246 | { | |
de014da6 | 1247 | const char *tag = 0; |
9986f0b5 | 1248 | admin_addop *add; |
410c8acf | 1249 | |
0ba8de86 | 1250 | /* --- Set stuff up --- */ |
1251 | ||
de014da6 | 1252 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 1253 | add->peer.name = 0; |
48b84569 | 1254 | add->peer.tag = 0; |
fe2a5dcf | 1255 | add->peer.privtag = 0; |
de014da6 | 1256 | add->peer.t_ka = 0; |
1257 | add->peer.tops = tun_default; | |
8743c776 | 1258 | add->peer.f = 0; |
37941236 | 1259 | |
42da2a58 | 1260 | /* --- Parse options --- */ |
1261 | ||
e7a4d919 MW |
1262 | OPTIONS(ac, av, { |
1263 | OPTARG("-background", arg, { tag = arg; }) | |
1264 | OPTARG("-tunnel", arg, { | |
1265 | unsigned i; | |
1266 | for (i = 0;; i++) { | |
1267 | if (!tunnels[i]) { | |
1268 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 1269 | goto fail; |
42da2a58 | 1270 | } |
e7a4d919 MW |
1271 | if (mystrieq(arg, tunnels[i]->name)) { |
1272 | add->peer.tops = tunnels[i]; | |
42da2a58 | 1273 | break; |
1274 | } | |
1275 | } | |
e7a4d919 MW |
1276 | }) |
1277 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
8743c776 | 1278 | OPT("-cork", { add->peer.f |= KXF_CORK; }) |
48b84569 MW |
1279 | OPTARG("-key", arg, { |
1280 | if (add->peer.tag) | |
1281 | xfree(add->peer.tag); | |
1282 | add->peer.tag = xstrdup(arg); | |
1283 | }) | |
6411163d | 1284 | OPT("-mobile", { add->peer.f |= PSF_MOBILE; }) |
fe2a5dcf MW |
1285 | OPTARG("-priv", arg, { |
1286 | if (add->peer.privtag) | |
1287 | xfree(add->peer.privtag); | |
1288 | add->peer.privtag = xstrdup(arg); | |
1289 | }) | |
e7a4d919 | 1290 | }); |
42da2a58 | 1291 | |
9986f0b5 MW |
1292 | /* --- Make sure someone's not got there already --- */ |
1293 | ||
bcf3764a | 1294 | if (!av[0] || !av[1]) |
9986f0b5 | 1295 | goto bad_syntax; |
e7a4d919 MW |
1296 | if (p_find(*av)) { |
1297 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1298 | goto fail; |
42da2a58 | 1299 | } |
e7a4d919 MW |
1300 | add->peer.name = xstrdup(*av++); |
1301 | ac--; | |
42da2a58 | 1302 | |
37941236 | 1303 | /* --- Crank up the resolver --- */ |
de014da6 | 1304 | |
e7a4d919 | 1305 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1306 | return; |
1307 | ||
37941236 | 1308 | /* --- Clearing up --- */ |
1309 | ||
42da2a58 | 1310 | bad_syntax: |
9986f0b5 | 1311 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1312 | fail: |
9986f0b5 | 1313 | if (add->peer.name) xfree(add->peer.name); |
48b84569 | 1314 | if (add->peer.tag) xfree(add->peer.tag); |
fe2a5dcf | 1315 | if (add->peer.privtag) xfree(add->peer.privtag); |
37941236 | 1316 | xfree(add); |
0ba8de86 | 1317 | return; |
1318 | } | |
1319 | ||
1320 | /*----- Ping --------------------------------------------------------------*/ | |
1321 | ||
de014da6 | 1322 | /* --- @a_pingcancel@ --- * |
1323 | * | |
1324 | * Arguments: @admin_bgop *bg@ = background operation block | |
1325 | * | |
1326 | * Returns: --- | |
1327 | * | |
1328 | * Use: Cancels a running ping. | |
1329 | */ | |
1330 | ||
1331 | static void a_pingcancel(admin_bgop *bg) | |
1332 | { | |
1333 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1334 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1335 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1336 | } | |
1337 | ||
0ba8de86 | 1338 | /* --- @a_pong@ --- * |
1339 | * | |
1340 | * Arguments: @int rc@ = return code | |
de014da6 | 1341 | * @void *v@ = ping operation block |
0ba8de86 | 1342 | * |
1343 | * Returns: --- | |
1344 | * | |
1345 | * Use: Collects what happened to a ping message. | |
1346 | */ | |
1347 | ||
de014da6 | 1348 | static void a_pong(int rc, void *v) |
0ba8de86 | 1349 | { |
de014da6 | 1350 | admin_pingop *pg = v; |
0ba8de86 | 1351 | struct timeval tv; |
1352 | double millis; | |
1353 | ||
0ba8de86 | 1354 | switch (rc) { |
1355 | case PING_OK: | |
1356 | gettimeofday(&tv, 0); | |
de014da6 | 1357 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1358 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1359 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1360 | a_bgok(&pg->bg); |
0ba8de86 | 1361 | break; |
1362 | case PING_TIMEOUT: | |
f43df819 | 1363 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1364 | a_bgok(&pg->bg); |
0ba8de86 | 1365 | break; |
1366 | case PING_PEERDIED: | |
f43df819 | 1367 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1368 | a_bgok(&pg->bg); |
0ba8de86 | 1369 | break; |
1370 | default: | |
1371 | abort(); | |
1372 | } | |
060ca767 | 1373 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1374 | a_bgrelease(&pg->bg); |
0ba8de86 | 1375 | } |
1376 | ||
1377 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1378 | * | |
1379 | * Arguments: @admin *a@ = connection which requested the ping | |
1380 | * @unsigned ac@ = argument count | |
1381 | * @char *av[]@ = pointer to the argument list | |
1382 | * | |
1383 | * Returns: --- | |
1384 | * | |
1385 | * Use: Pings a peer. | |
1386 | */ | |
1387 | ||
1388 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1389 | const char *cmd, unsigned msg) | |
1390 | { | |
1391 | long t = T_PING; | |
0ba8de86 | 1392 | peer *p; |
de014da6 | 1393 | admin_pingop *pg = 0; |
1394 | const char *tag = 0; | |
0ba8de86 | 1395 | |
e7a4d919 MW |
1396 | OPTIONS(ac, av, { |
1397 | OPTARG("-background", arg, { tag = arg; }) | |
1398 | OPTTIME("-timeout", arg, { t = arg; }) | |
1399 | }); | |
1400 | if (!*av || av[1]) goto bad_syntax; | |
1401 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1402 | return; |
de014da6 | 1403 | pg = xmalloc(sizeof(*pg)); |
1404 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1405 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1406 | goto fail; | |
060ca767 | 1407 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1408 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1409 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1410 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1411 | a_bgrelease(&pg->bg); |
1412 | } | |
0ba8de86 | 1413 | return; |
e04c2d50 | 1414 | |
0ba8de86 | 1415 | bad_syntax: |
f43df819 | 1416 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1417 | fail: |
ff92ffd3 | 1418 | if (pg) xfree(pg); |
42da2a58 | 1419 | return; |
410c8acf | 1420 | } |
1421 | ||
0ba8de86 | 1422 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1423 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1424 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1425 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1426 | |
be6a1b7a MW |
1427 | /*----- Service commands --------------------------------------------------*/ |
1428 | ||
1429 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1430 | { | |
1431 | admin_service *svc; | |
1432 | unsigned f; | |
1433 | ||
1434 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1435 | if (f) { | |
1436 | if (versioncmp(av[1], svc->version) <= 0) { | |
1437 | a_fail(a, | |
1438 | "service-exists", | |
1439 | "%s", SYM_NAME(svc), | |
1440 | "%s", svc->version, | |
1441 | A_END); | |
1442 | return; | |
1443 | } | |
1444 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1445 | a_svcunlink(svc); | |
1446 | } | |
1447 | svc->prov = a; | |
1448 | svc->version = xstrdup(av[1]); | |
1449 | svc->next = a->svcs; | |
1450 | svc->prev = 0; | |
1451 | if (a->svcs) a->svcs->prev = svc; | |
1452 | a->svcs = svc; | |
1453 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1454 | a_ok(a); | |
1455 | } | |
1456 | ||
1457 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1458 | { | |
1459 | admin_service *svc; | |
1460 | ||
1461 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1462 | return; | |
1463 | if (svc->prov != a) { | |
1464 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1465 | return; | |
1466 | } | |
1467 | a_svcrelease(svc); | |
1468 | a_ok(a); | |
1469 | } | |
1470 | ||
1471 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1472 | { | |
1473 | admin_service *svc; | |
1474 | ||
1475 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1476 | return; | |
1477 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1478 | a_fail(a, "service-too-old", | |
1479 | "%s", SYM_NAME(svc), | |
1480 | "%s", svc->version, | |
1481 | A_END); | |
1482 | return; | |
1483 | } | |
1484 | a_ok(a); | |
1485 | } | |
1486 | ||
1487 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1488 | { | |
1489 | admin_service *svc; | |
1490 | ||
1491 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1492 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1493 | a_ok(a); | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1498 | { | |
1499 | admin_service *svc; | |
1500 | sym_iter i; | |
1501 | ||
1502 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1503 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1504 | a_ok(a); | |
1505 | } | |
1506 | ||
ef2f29c9 MW |
1507 | static void a_canceljob(admin_bgop *bg) |
1508 | { | |
1509 | admin_svcop *svc = (admin_svcop *)bg; | |
1510 | ||
1511 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1512 | a_jobdestroy(svc); | |
1513 | } | |
1514 | ||
1515 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1516 | { | |
1517 | const char *tag = 0; | |
1518 | admin_service *svc; | |
1519 | admin_svcop *svcop; | |
1520 | const char *ver = 0; | |
1521 | dstr d = DSTR_INIT; | |
1522 | ||
1523 | OPTIONS(ac, av, { | |
1524 | OPTARG("-background", arg, { tag = arg; }) | |
1525 | OPTARG("-version", arg, { ver = arg; }) | |
1526 | }); | |
1527 | if (!*av) goto bad_syntax; | |
1528 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1529 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1530 | a_fail(a, "service-too-old", | |
1531 | "%s", SYM_NAME(svc), | |
1532 | "%s", svc->version, | |
1533 | A_END); | |
1534 | goto fail; | |
1535 | } | |
1536 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1537 | a_fail(a, "provider-overloaded", A_END); | |
1538 | goto fail; | |
1539 | } | |
1540 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1541 | a_jobdestroy(svcop); | |
1542 | goto fail; | |
1543 | } | |
1544 | a_write(svc->prov, "SVCJOB", 0, | |
1545 | "%s", a_jobidencode(svcop), | |
1546 | "?TOKENS", av, | |
1547 | A_END); | |
1548 | goto done; | |
1549 | ||
1550 | bad_syntax: | |
1551 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1552 | fail: | |
1553 | done: | |
1554 | dstr_destroy(&d); | |
1555 | return; | |
1556 | } | |
1557 | ||
1558 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1559 | { | |
1560 | admin_svcop *svc; | |
1561 | ||
1562 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1563 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1564 | return; | |
1565 | } | |
1566 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1567 | if (donep) { | |
1568 | a_jobdestroy(svc); | |
1569 | a_bgrelease(&svc->bg); | |
1570 | } | |
1571 | a_ok(a); | |
1572 | } | |
1573 | ||
1574 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1575 | { a_replycmd(a, "OK", 1, av); } | |
1576 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1577 | { a_replycmd(a, "INFO", 0, av); } | |
1578 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1579 | { a_replycmd(a, "FAIL", 1, av); } | |
1580 | ||
410c8acf | 1581 | /*----- Administration commands -------------------------------------------*/ |
1582 | ||
1583 | /* --- Miscellaneous commands --- */ | |
1584 | ||
3cdc3f3a | 1585 | /* --- @traceish@ --- * |
1586 | * | |
1587 | * Arguments: @admin *a@ = connection to complain on | |
1588 | * @unsigned ac@ = number of arguments | |
1589 | * @char *av[]@ = vector of arguments | |
1590 | * @const char *what@ = what we're messing with | |
1591 | * @const trace_opt *tt@ = options table | |
1592 | * @unsigned *ff@ = where the flags are | |
1593 | * | |
1594 | * Returns: Nonzero if anything changed. | |
1595 | * | |
1596 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1597 | */ | |
410c8acf | 1598 | |
3cdc3f3a | 1599 | static int traceish(admin *a, unsigned ac, char *av[], |
1600 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1601 | { |
3cdc3f3a | 1602 | int ch = 0; |
1603 | ||
410c8acf | 1604 | if (!ac || strcmp(av[0], "?") == 0) { |
1605 | const trace_opt *t; | |
3cdc3f3a | 1606 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1607 | a_info(a, "*%c%c %s", |
1608 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1609 | } |
1610 | } else { | |
1611 | unsigned sense = 1; | |
3cdc3f3a | 1612 | unsigned f = *ff; |
1613 | const trace_opt *t; | |
410c8acf | 1614 | char *p = av[0]; |
1615 | ||
1616 | while (*p) { | |
1617 | switch (*p) { | |
1618 | case '+': sense = 1; break; | |
1619 | case '-': sense = 0; break; | |
1620 | default: | |
3cdc3f3a | 1621 | for (t = tt; t->ch; t++) { |
1622 | if (t->ch == *p) { | |
1623 | if (sense) f |= t->f; | |
1624 | else f &= ~t->f; | |
410c8acf | 1625 | goto tropt_ok; |
1626 | } | |
1627 | } | |
f43df819 | 1628 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1629 | return (0); |
e04c2d50 | 1630 | tropt_ok:; |
410c8acf | 1631 | break; |
1632 | } | |
1633 | p++; | |
1634 | } | |
3cdc3f3a | 1635 | *ff = f; |
1636 | ch = 1; | |
410c8acf | 1637 | } |
3cdc3f3a | 1638 | a_ok(a); |
1639 | return (ch); | |
1640 | } | |
1641 | ||
1642 | #ifndef NTRACE | |
1643 | ||
1644 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1645 | { | |
1646 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1647 | trace_level(tr_flags); | |
410c8acf | 1648 | } |
1649 | ||
1650 | #endif | |
1651 | ||
3cdc3f3a | 1652 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1653 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1654 | |
3cdc3f3a | 1655 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1656 | const char *status, char *av[]) |
1657 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1658 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1659 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1660 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1661 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1662 | |
410c8acf | 1663 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1664 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1665 | |
410c8acf | 1666 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1667 | { | |
1668 | if (flags & F_DAEMON) | |
f43df819 | 1669 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1670 | else { |
f43df819 | 1671 | a_notify("DAEMON", A_END); |
93bee2c4 | 1672 | if (a_stdin) |
410c8acf | 1673 | a_destroy(a_stdin); |
19dd2531 | 1674 | if (daemonize()) |
f43df819 | 1675 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1676 | else { |
410c8acf | 1677 | flags |= F_DAEMON; |
3cdc3f3a | 1678 | a_ok(a); |
93bee2c4 | 1679 | } |
410c8acf | 1680 | } |
1681 | } | |
1682 | ||
ff92ffd3 MW |
1683 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1684 | { | |
1685 | admin_bgop *bg; | |
1686 | ||
1687 | for (bg = a->bg; bg; bg = bg->next) { | |
1688 | assert(bg->tag); | |
1689 | a_info(a, "%s", bg->tag, A_END); | |
1690 | } | |
1691 | a_ok(a); | |
1692 | } | |
1693 | ||
1694 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1695 | { | |
1696 | admin_bgop *bg; | |
1697 | ||
1698 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1699 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1700 | else { | |
1701 | bg->cancel(bg); | |
1702 | a_bgrelease(bg); | |
1703 | a_ok(a); | |
1704 | } | |
1705 | } | |
1706 | ||
449991a3 MW |
1707 | static void acmd_algs(admin *a, unsigned ac, char *av[]) |
1708 | { | |
35c8b547 MW |
1709 | peer *p; |
1710 | const kdata *kd; | |
1711 | const group *g; | |
1712 | const algswitch *algs; | |
1713 | ||
1714 | if (!ac) | |
1715 | kd = master; | |
1716 | else { | |
1717 | if ((p = a_findpeer(a, av[0])) == 0) return; | |
1718 | kd = p->kx.kpriv; | |
1719 | } | |
1720 | g = kd->g; | |
1721 | algs = &kd->algs; | |
1722 | ||
449991a3 | 1723 | a_info(a, |
35c8b547 MW |
1724 | "kx-group=%s", g->ops->name, |
1725 | "kx-group-order-bits=%lu", (unsigned long)mp_bits(g->r), | |
1726 | "kx-group-elt-bits=%lu", (unsigned long)g->nbits, | |
449991a3 MW |
1727 | A_END); |
1728 | a_info(a, | |
35c8b547 MW |
1729 | "hash=%s", algs->h->name, |
1730 | "mgf=%s", algs->mgf->name, | |
1731 | "hash-sz=%lu", (unsigned long)algs->h->hashsz, | |
449991a3 MW |
1732 | A_END); |
1733 | a_info(a, | |
a93aacce MW |
1734 | "bulk-transform=%s", algs->bulk->name, |
1735 | "bulk-overhead=%lu", (unsigned long)algs->bulk->overhead(algs), | |
449991a3 | 1736 | A_END); |
a93aacce MW |
1737 | if (algs->c) { |
1738 | a_info(a, | |
1739 | "cipher=%s", algs->c->name, | |
1740 | "cipher-keysz=%lu", (unsigned long)algs->cksz, | |
1741 | "cipher-blksz=%lu", (unsigned long)algs->c->blksz, | |
1742 | A_END); | |
1743 | } | |
449991a3 | 1744 | a_info(a, |
35c8b547 | 1745 | "cipher-data-limit=%lu", (unsigned long)algs->expsz, |
449991a3 | 1746 | A_END); |
a93aacce MW |
1747 | if (algs->m) { |
1748 | a_info(a, | |
1749 | "mac=%s", algs->m->name, | |
1750 | "mac-keysz=%lu", (unsigned long)algs->mksz, | |
1751 | "mac-tagsz=%lu", (unsigned long)algs->tagsz, | |
1752 | A_END); | |
1753 | } | |
b87bffcb MW |
1754 | if (algs->b) { |
1755 | a_info(a, | |
1756 | "blkc=%.*s", strlen(algs->b->name) - 4, algs->b->name, | |
1757 | "blkc-keysz=%lu", (unsigned long)algs->bksz, | |
1758 | "blkc-blksz=%lu", (unsigned long)algs->b->blksz, | |
1759 | A_END); | |
1760 | } | |
449991a3 MW |
1761 | a_ok(a); |
1762 | } | |
1763 | ||
410c8acf | 1764 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1765 | { | |
c8e02c8a | 1766 | FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); }); |
3cdc3f3a | 1767 | a_ok(a); |
410c8acf | 1768 | } |
1769 | ||
1770 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1771 | { | |
1772 | peer *p; | |
1773 | ||
37941236 | 1774 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1775 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1776 | a_ok(a); |
1777 | } | |
410c8acf | 1778 | } |
1779 | ||
64cf2223 MW |
1780 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1781 | { | |
1782 | peer *p; | |
1783 | ||
1784 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1785 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1786 | p_setifname(p, av[1]); | |
1787 | a_ok(a); | |
e04c2d50 | 1788 | } |
64cf2223 MW |
1789 | } |
1790 | ||
37941236 | 1791 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1792 | { | |
1793 | buf b; | |
1794 | ||
1795 | buf_init(&b, buf_i, PKBUFSZ); | |
1796 | c_new(&b); | |
f43df819 | 1797 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1798 | a_ok(a); |
1799 | } | |
1800 | ||
1801 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1802 | { | |
1803 | base64_ctx b64; | |
1804 | buf b; | |
1805 | dstr d = DSTR_INIT; | |
1806 | ||
1807 | base64_init(&b64); | |
1808 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1809 | base64_decode(&b64, 0, 0, &d); | |
1810 | buf_init(&b, d.buf, d.len); | |
1811 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1812 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1813 | else |
1814 | a_ok(a); | |
1815 | dstr_destroy(&d); | |
1816 | } | |
1817 | ||
1818 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1819 | { | |
1820 | peer *p; | |
1821 | base64_ctx b64; | |
1822 | dstr d = DSTR_INIT; | |
1823 | ||
1824 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1825 | base64_init(&b64); | |
1826 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1827 | base64_decode(&b64, 0, 0, &d); | |
1828 | p_greet(p, d.buf, d.len); | |
1829 | dstr_destroy(&d); | |
1830 | a_ok(a); | |
1831 | } | |
1832 | } | |
1833 | ||
410c8acf | 1834 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1835 | { | |
1836 | peer *p; | |
1837 | const addr *ad; | |
1838 | ||
37941236 | 1839 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1840 | ad = p_addr(p); |
1841 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1842 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1843 | a_ok(a); |
410c8acf | 1844 | } |
1845 | } | |
1846 | ||
060ca767 | 1847 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1848 | { | |
1849 | peer *p; | |
1850 | const peerspec *ps; | |
f3c6d21c | 1851 | const char *ptag; |
060ca767 | 1852 | |
37941236 | 1853 | if ((p = a_findpeer(a, av[0])) != 0) { |
1854 | ps = p_spec(p); | |
f43df819 | 1855 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
fe2a5dcf MW |
1856 | a_info(a, "key=%s", p_tag(p), |
1857 | "current-key=%s", p->kx.kpub->tag, A_END); | |
f3c6d21c MW |
1858 | if ((ptag = p_privtag(p)) == 0) ptag = "(default)"; |
1859 | a_info(a, "private-key=%s", ptag, | |
fe2a5dcf | 1860 | "current-private-key=%s", p->kx.kpriv->tag, A_END); |
f43df819 | 1861 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); |
37941236 | 1862 | a_ok(a); |
060ca767 | 1863 | } |
060ca767 | 1864 | } |
1865 | ||
1866 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1867 | { | |
f43df819 MW |
1868 | a_info(a, "implementation=edgeware-tripe", A_END); |
1869 | a_info(a, "version=%s", VERSION, A_END); | |
1870 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1871 | a_ok(a); |
1872 | } | |
1873 | ||
c7053da9 | 1874 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1875 | { | |
1876 | peer *p; | |
1877 | stats *st; | |
1878 | ||
37941236 | 1879 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1880 | return; |
060ca767 | 1881 | |
1882 | st = p_stats(p); | |
f43df819 MW |
1883 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1884 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1885 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
1886 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
1887 | a_info(a, | |
1888 | "packets-out=%lu", st->n_out, | |
1889 | "bytes-out=%lu", st->sz_out, | |
1890 | A_END); | |
1891 | a_info(a, | |
1892 | "keyexch-packets-in=%lu", st->n_kxin, | |
1893 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
1894 | A_END); | |
1895 | a_info(a, | |
1896 | "keyexch-packets-out=%lu", st->n_kxout, | |
1897 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
1898 | A_END); | |
1899 | a_info(a, | |
1900 | "ip-packets-in=%lu", st->n_ipin, | |
1901 | "ip-bytes-in=%lu", st->sz_ipin, | |
1902 | A_END); | |
1903 | a_info(a, | |
e04c2d50 | 1904 | "ip-packets-out=%lu", st->n_ipout, |
18ad8913 MW |
1905 | "ip-bytes-out=%lu", st->sz_ipout, |
1906 | A_END); | |
f43df819 | 1907 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 1908 | a_ok(a); |
c7053da9 | 1909 | } |
1910 | ||
410c8acf | 1911 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1912 | { | |
1913 | peer *p; | |
f98df549 | 1914 | |
37941236 | 1915 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1916 | p_destroy(p); |
3cdc3f3a | 1917 | a_ok(a); |
410c8acf | 1918 | } |
1919 | } | |
1920 | ||
0ba8de86 | 1921 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1922 | { | |
1923 | peer *p; | |
f98df549 | 1924 | |
37941236 | 1925 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1926 | kx_start(&p->kx, 1); |
0ba8de86 | 1927 | a_ok(a); |
1928 | } | |
1929 | } | |
1930 | ||
de014da6 | 1931 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1932 | { p_keyreload(); a_ok(a); } | |
1933 | ||
410c8acf | 1934 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1935 | { | |
f43df819 | 1936 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1937 | a_ok(a); |
410c8acf | 1938 | a_quit(); |
1939 | } | |
1940 | ||
3cdc3f3a | 1941 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1942 | { | |
f43df819 | 1943 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1944 | a_ok(a); |
1945 | } | |
1946 | ||
42da2a58 | 1947 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1948 | { | |
1949 | int i; | |
f98df549 | 1950 | |
42da2a58 | 1951 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1952 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1953 | a_ok(a); |
1954 | } | |
1955 | ||
410c8acf | 1956 | /* --- The command table and help --- */ |
1957 | ||
1958 | typedef struct acmd { | |
1959 | const char *name; | |
1960 | const char *help; | |
1961 | unsigned argmin, argmax; | |
1962 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1963 | } acmd; | |
1964 | ||
1965 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1966 | ||
1967 | static const acmd acmdtab[] = { | |
9986f0b5 | 1968 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1969 | { "addr", "PEER", 1, 1, acmd_addr }, |
35c8b547 | 1970 | { "algs", "[PEER]", 0, 1, acmd_algs }, |
ff92ffd3 | 1971 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1972 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1973 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1974 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1975 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1976 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1977 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1978 | { "help", 0, 0, 0, acmd_help }, | |
1979 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1980 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1981 | { "kill", "PEER", 1, 1, acmd_kill }, |
1982 | { "list", 0, 0, 0, acmd_list }, | |
1983 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1984 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1985 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1986 | { "port", 0, 0, 0, acmd_port }, | |
1987 | { "quit", 0, 0, 0, acmd_quit }, | |
1988 | { "reload", 0, 0, 0, acmd_reload }, | |
1989 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1990 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
be6a1b7a MW |
1991 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
1992 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
1993 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
1994 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 1995 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 1996 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
1997 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
1998 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
1999 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
2000 | 2, 0xffff, acmd_svcsubmit }, | |
f43df819 | 2001 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 2002 | #ifndef NTRACE |
f43df819 | 2003 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 2004 | #endif |
f43df819 MW |
2005 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
2006 | { "version", 0, 0, 0, acmd_version }, | |
2007 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
e04c2d50 | 2008 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, |
410c8acf | 2009 | { 0, 0, 0, 0, 0 } |
2010 | }; | |
2011 | ||
2012 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
2013 | { | |
2014 | const acmd *c; | |
f98df549 | 2015 | |
f43df819 MW |
2016 | for (c = acmdtab; c->name; c++) { |
2017 | if (c->help) | |
2018 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
e04c2d50 | 2019 | else |
f43df819 MW |
2020 | a_info(a, "%s", c->name, A_END); |
2021 | } | |
3cdc3f3a | 2022 | a_ok(a); |
410c8acf | 2023 | } |
2024 | ||
2025 | /*----- Connection handling -----------------------------------------------*/ | |
2026 | ||
c511e1f9 | 2027 | /* --- @a_destroypending@ --- * |
410c8acf | 2028 | * |
c511e1f9 | 2029 | * Arguments: --- |
fd3cf232 | 2030 | * |
2031 | * Returns: --- | |
2032 | * | |
c511e1f9 | 2033 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 2034 | */ |
2035 | ||
c511e1f9 | 2036 | static void a_destroypending(void) |
410c8acf | 2037 | { |
94593d1b | 2038 | admin *a, *aa, *head; |
de014da6 | 2039 | admin_bgop *bg, *bbg; |
be6a1b7a | 2040 | admin_service *svc, *ssvc; |
de014da6 | 2041 | |
94593d1b MW |
2042 | /* --- Destroy connections marked as pending --- * |
2043 | * | |
2044 | * Slightly messy. Killing clients may cause others to finally die. Make | |
2045 | * sure that they can be put on the list without clobbering anything or | |
2046 | * getting lost. | |
2047 | */ | |
fd3cf232 | 2048 | |
94593d1b MW |
2049 | while (a_dead) { |
2050 | head = a_dead; | |
2051 | a_dead = 0; | |
2052 | for (a = head; a; a = aa) { | |
2053 | aa = a->next; | |
2054 | assert(a->f & AF_DEAD); | |
c511e1f9 | 2055 | |
94593d1b | 2056 | /* --- Report what we're doing --- */ |
c511e1f9 | 2057 | |
94593d1b MW |
2058 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
2059 | a->seq); ) | |
c511e1f9 | 2060 | |
94593d1b | 2061 | /* --- If this is the foreground client then shut down --- */ |
46dde080 | 2062 | |
94593d1b MW |
2063 | if (a->f & AF_FOREGROUND) { |
2064 | T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); ) | |
2065 | a_warn("SERVER", "quit", "foreground-eof", A_END); | |
2066 | a_quit(); | |
2067 | } | |
46dde080 | 2068 | |
94593d1b | 2069 | /* --- Abort any background jobs in progress --- */ |
c511e1f9 | 2070 | |
94593d1b MW |
2071 | for (bg = a->bg; bg; bg = bbg) { |
2072 | bbg = bg->next; | |
2073 | bg->cancel(bg); | |
2074 | if (bg->tag) xfree(bg->tag); | |
2075 | xfree(bg); | |
2076 | } | |
c511e1f9 | 2077 | |
94593d1b | 2078 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a | 2079 | |
94593d1b MW |
2080 | for (svc = a->svcs; svc; svc = ssvc) { |
2081 | ssvc = svc->next; | |
2082 | a_svcrelease(svc); | |
2083 | } | |
2084 | a_jobtablefinal(&a->j); | |
be6a1b7a | 2085 | |
94593d1b | 2086 | /* --- Close file descriptors and selectory --- */ |
c511e1f9 | 2087 | |
94593d1b MW |
2088 | selbuf_destroy(&a->b); |
2089 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
2090 | close(a->w.fd); | |
2091 | if (a_stdin == a) a_stdin = 0; | |
c511e1f9 | 2092 | |
94593d1b | 2093 | /* --- Done --- */ |
c511e1f9 | 2094 | |
94593d1b MW |
2095 | DESTROY(a); |
2096 | } | |
410c8acf | 2097 | } |
060ca767 | 2098 | } |
2099 | ||
fd3cf232 | 2100 | /* --- @a_destroy@ --- * |
2101 | * | |
2102 | * Arguments: @admin *a@ = pointer to an admin block | |
2103 | * | |
2104 | * Returns: --- | |
2105 | * | |
2106 | * Use: Destroys an admin block. This requires a certain amount of | |
2107 | * care. | |
2108 | */ | |
2109 | ||
de014da6 | 2110 | static void freequeue(oqueue *q) |
2111 | { | |
2112 | obuf *o, *oo; | |
2113 | ||
2114 | for (o = q->hd; o; o = oo) { | |
2115 | oo = o->next; | |
2116 | xfree(o); | |
2117 | } | |
2118 | q->hd = q->tl = 0; | |
2119 | } | |
2120 | ||
fd3cf232 | 2121 | static void a_destroy(admin *a) |
2122 | { | |
fd3cf232 | 2123 | if (a->f & AF_DEAD) |
2124 | return; | |
2125 | ||
c511e1f9 MW |
2126 | if (a->next) a->next->prev = a->prev; |
2127 | if (a->prev) a->prev->next = a->next; | |
2128 | else admins = a->next; | |
fd3cf232 | 2129 | |
c511e1f9 | 2130 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 2131 | freequeue(&a->out); |
fd3cf232 | 2132 | |
c511e1f9 MW |
2133 | a->f |= AF_DEAD; |
2134 | a->next = a_dead; | |
2135 | a_dead = a; | |
fd3cf232 | 2136 | |
c511e1f9 | 2137 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2138 | } |
2139 | ||
410c8acf | 2140 | /* --- @a_line@ --- * |
2141 | * | |
2142 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2143 | * @size_t len@ = length of the line |
410c8acf | 2144 | * @void *vp@ = pointer to my admin block |
2145 | * | |
2146 | * Returns: --- | |
2147 | * | |
2148 | * Use: Handles a line of input. | |
2149 | */ | |
2150 | ||
3008eabf | 2151 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2152 | { |
2153 | admin *a = vp; | |
2154 | const acmd *c; | |
6f88042a | 2155 | char *av[16 + 1]; |
410c8acf | 2156 | size_t ac; |
2157 | ||
8d0c7a83 | 2158 | TIMER; |
fd3cf232 | 2159 | if (a->f & AF_DEAD) |
2160 | return; | |
410c8acf | 2161 | if (!p) { |
de014da6 | 2162 | if (!a->bg) |
2163 | a_destroy(a); | |
2164 | else { | |
2165 | a->f |= AF_CLOSE; | |
2166 | selbuf_disable(&a->b); | |
2167 | } | |
410c8acf | 2168 | return; |
2169 | } | |
6f88042a | 2170 | ac = str_qsplit(p, av, N(av) - 1, 0, STRF_QUOTE); |
410c8acf | 2171 | if (!ac) |
2172 | return; | |
6f88042a | 2173 | av[ac] = 0; |
410c8acf | 2174 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2175 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2176 | ac--; |
f43df819 MW |
2177 | if (c->argmin > ac || ac > c->argmax) { |
2178 | if (!c->help) | |
2179 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
e04c2d50 | 2180 | else |
f43df819 | 2181 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); |
c511e1f9 | 2182 | } else |
410c8acf | 2183 | c->func(a, ac, av + 1); |
2184 | return; | |
2185 | } | |
2186 | } | |
f43df819 | 2187 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2188 | } |
2189 | ||
2190 | /* --- @a_create@ --- * | |
2191 | * | |
2192 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2193 | * @unsigned f@ = initial flags to set |
410c8acf | 2194 | * |
2195 | * Returns: --- | |
2196 | * | |
2197 | * Use: Creates a new admin connection. | |
2198 | */ | |
2199 | ||
3cdc3f3a | 2200 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2201 | { |
2202 | admin *a = CREATE(admin); | |
3cdc3f3a | 2203 | |
93bee2c4 | 2204 | T( static unsigned seq = 0; |
2205 | a->seq = seq++; ) | |
410c8acf | 2206 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2207 | a->bg = 0; |
042d5c20 | 2208 | a->ref = 0; |
be6a1b7a | 2209 | a->svcs = 0; |
5d46c0f8 | 2210 | a_jobtableinit(&a->j); |
3cdc3f3a | 2211 | a->f = f; |
de014da6 | 2212 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2213 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2214 | if (fd_out != fd_in) |
fd3cf232 | 2215 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2216 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2217 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2218 | a->out.hd = a->out.tl = 0; |
410c8acf | 2219 | a->next = admins; |
2220 | a->prev = 0; | |
de014da6 | 2221 | if (admins) admins->prev = a; |
410c8acf | 2222 | admins = a; |
2223 | } | |
2224 | ||
2225 | /* --- @a_accept@ --- * | |
2226 | * | |
2227 | * Arguments: @int fd@ = file descriptor to accept | |
2228 | * @unsigned mode@ = what to do | |
2229 | * @void *v@ = uninteresting pointer | |
2230 | * | |
2231 | * Returns: --- | |
2232 | * | |
2233 | * Use: Accepts a new admin connection. | |
2234 | */ | |
2235 | ||
2236 | static void a_accept(int fd, unsigned mode, void *v) | |
2237 | { | |
2238 | int nfd; | |
2239 | struct sockaddr_un sun; | |
2240 | size_t sz = sizeof(sun); | |
2241 | ||
2242 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2243 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2244 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2245 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2246 | return; |
2247 | } | |
3cdc3f3a | 2248 | a_create(nfd, nfd, 0); |
410c8acf | 2249 | } |
2250 | ||
c511e1f9 MW |
2251 | /* --- @a_preselect@ --- * |
2252 | * | |
2253 | * Arguments: --- | |
2254 | * | |
2255 | * Returns: --- | |
2256 | * | |
2257 | * Use: Informs the admin module that we're about to select again, | |
2258 | * and that it should do cleanup things it has delayed until a | |
2259 | * `safe' time. | |
2260 | */ | |
2261 | ||
2262 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2263 | ||
410c8acf | 2264 | /* --- @a_daemon@ --- * |
2265 | * | |
2266 | * Arguments: --- | |
2267 | * | |
2268 | * Returns: --- | |
2269 | * | |
2270 | * Use: Informs the admin module that it's a daemon. | |
2271 | */ | |
2272 | ||
f98df549 | 2273 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2274 | |
2275 | /* --- @a_init@ --- * | |
2276 | * | |
2277 | * Arguments: @const char *name@ = socket name to create | |
aa2405e8 MW |
2278 | * @uid_t u@ = user to own the socket |
2279 | * @gid_t g@ = group to own the socket | |
a9279e37 | 2280 | * @mode_t m@ = permissions to set on the socket |
410c8acf | 2281 | * |
2282 | * Returns: --- | |
2283 | * | |
2284 | * Use: Creates the admin listening socket. | |
2285 | */ | |
2286 | ||
a9279e37 | 2287 | void a_init(const char *name, uid_t u, gid_t g, mode_t m) |
410c8acf | 2288 | { |
2289 | int fd; | |
2290 | int n = 5; | |
2291 | struct sockaddr_un sun; | |
2292 | struct sigaction sa; | |
2293 | size_t sz; | |
879483d7 | 2294 | mode_t omask; |
410c8acf | 2295 | |
be6a1b7a MW |
2296 | /* --- Create services table --- */ |
2297 | ||
2298 | sym_create(&a_svcs); | |
2299 | ||
410c8acf | 2300 | /* --- Set up the socket address --- */ |
2301 | ||
2302 | sz = strlen(name) + 1; | |
2303 | if (sz > sizeof(sun.sun_path)) | |
2304 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
2305 | BURN(sun); | |
2306 | sun.sun_family = AF_UNIX; | |
2307 | memcpy(sun.sun_path, name, sz); | |
2308 | sz += offsetof(struct sockaddr_un, sun_path); | |
2309 | ||
2310 | /* --- Attempt to bind to the socket --- */ | |
2311 | ||
879483d7 | 2312 | omask = umask(0077); |
410c8acf | 2313 | again: |
2314 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
2315 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
2316 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
2317 | struct stat st; | |
2318 | int e = errno; | |
2319 | if (errno != EADDRINUSE) { | |
2320 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
2321 | sun.sun_path, strerror(e)); | |
2322 | } | |
2323 | if (!n) | |
2324 | die(EXIT_FAILURE, "too many retries; giving up"); | |
2325 | n--; | |
2326 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
2327 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
2328 | sun.sun_path); | |
2329 | } | |
2330 | if (errno != ECONNREFUSED) | |
2331 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
2332 | if (stat(sun.sun_path, &st)) { | |
2333 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
2334 | sun.sun_path, strerror(errno)); | |
2335 | } | |
2336 | if (!S_ISSOCK(st.st_mode)) | |
2337 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 2338 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2339 | unlink(sun.sun_path); |
2340 | close(fd); | |
2341 | goto again; | |
2342 | } | |
aa2405e8 | 2343 | if (chown(sun.sun_path, u, g)) { |
9e0161ce MW |
2344 | die(EXIT_FAILURE, "failed to set socket owner: %s", |
2345 | strerror(errno)); | |
aa2405e8 | 2346 | } |
a9279e37 MW |
2347 | if (chmod(sun.sun_path, m)) { |
2348 | die(EXIT_FAILURE, "failed to set socket permissions: %s", | |
2349 | strerror(errno)); | |
2350 | } | |
879483d7 | 2351 | umask(omask); |
410c8acf | 2352 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
2353 | if (listen(fd, 5)) | |
2354 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
2355 | ||
2356 | /* --- Listen to the socket --- */ | |
2357 | ||
2358 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2359 | sel_addfile(&sock); | |
2360 | sockname = name; | |
2361 | bres_init(&sel); | |
2362 | T( trace_custom(a_trace, 0); | |
2363 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2364 | flags |= F_INIT; | |
2365 | ||
2366 | /* --- Set up signal handlers --- */ | |
2367 | ||
2368 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2369 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 2370 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 2371 | sigaction(SIGINT, 0, &sa); |
2372 | if (sa.sa_handler != SIG_IGN) | |
2373 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2374 | } | |
2375 | ||
2376 | /*----- That's all, folks -------------------------------------------------*/ |