410c8acf |
1 | /* -*-c-*- |
2 | * |
2d752320 |
3 | * $Id$ |
410c8acf |
4 | * |
5 | * Admin interface for configuration |
6 | * |
7 | * (c) 2001 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Trivial IP Encryption (TrIPE). |
13 | * |
14 | * TrIPE is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * TrIPE is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with TrIPE; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
410c8acf |
29 | /*----- Header files ------------------------------------------------------*/ |
30 | |
31 | #include "tripe.h" |
32 | |
33 | /*----- Global variables --------------------------------------------------*/ |
34 | |
35 | #ifndef NTRACE |
36 | |
37 | const trace_opt tr_opts[] = { |
38 | { 't', T_TUNNEL, "tunnel events" }, |
39 | { 'r', T_PEER, "peer events" }, |
40 | { 'a', T_ADMIN, "admin interface" }, |
410c8acf |
41 | { 's', T_KEYSET, "symmetric keyset management" }, |
42 | { 'x', T_KEYEXCH, "key exchange" }, |
43 | { 'm', T_KEYMGMT, "key management" }, |
37941236 |
44 | { 'l', T_CHAL, "challenge management" }, |
45 | { 'p', T_PACKET, "packet contents" }, |
46 | { 'c', T_CRYPTO, "crypto details" }, |
410c8acf |
47 | { 'A', T_ALL, "all of the above" }, |
48 | { 0, 0, 0 } |
49 | }; |
50 | |
51 | unsigned tr_flags = 0; |
52 | #endif |
53 | |
3cdc3f3a |
54 | static const trace_opt w_opts[] = { |
55 | { 't', AF_TRACE, "trace messages" }, |
56 | { 'n', AF_NOTE, "asynchronous notifications" }, |
57 | { 'w', AF_WARN, "warnings" }, |
58 | { 'A', AF_ALLMSGS, "all of the above" }, |
59 | { 0, 0, 0 } |
60 | }; |
61 | |
410c8acf |
62 | /*----- Static variables --------------------------------------------------*/ |
63 | |
64 | static admin *admins; |
65 | static sel_file sock; |
66 | static const char *sockname; |
67 | static unsigned flags = 0; |
68 | static admin *a_stdin = 0; |
69 | static sig s_term, s_int, s_hup; |
70 | |
71 | #define F_DAEMON 1u |
72 | #define F_INIT 2u |
73 | |
74 | #define T_RESOLVE SEC(30) |
0ba8de86 |
75 | #define T_PING SEC(5) |
410c8acf |
76 | |
fd3cf232 |
77 | static void a_destroy(admin */*a*/); |
78 | static void a_lock(admin */*a*/); |
79 | static void a_unlock(admin */*a*/); |
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); |
3cdc3f3a |
115 | a_warn("ADMIN client-read-error -- %s", strerror(errno)); |
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 | |
3cdc3f3a |
234 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf |
235 | * |
236 | * Arguments: @admin *a@ = admin connection to write to |
de014da6 |
237 | * @const char *status@ = status code to report |
238 | * @const char *tag@ = tag string, or null |
410c8acf |
239 | * @const char *fmt@ = pointer to format string |
3cdc3f3a |
240 | * @va_list ap@ = arguments in list |
410c8acf |
241 | * @...@ = other arguments |
242 | * |
243 | * Returns: --- |
244 | * |
245 | * Use: Sends a message to an admin connection. |
246 | */ |
247 | |
de014da6 |
248 | static void a_vwrite(admin *a, const char *status, const char *tag, |
249 | const char *fmt, va_list ap) |
410c8acf |
250 | { |
410c8acf |
251 | dstr d = DSTR_INIT; |
de014da6 |
252 | |
253 | if (tag) dstr_puts(&d, "BG"); |
254 | dstr_puts(&d, status); |
3cdc3f3a |
255 | if (tag) { |
de014da6 |
256 | dstr_putc(&d, ' '); |
3cdc3f3a |
257 | dstr_puts(&d, tag); |
3cdc3f3a |
258 | } |
de014da6 |
259 | if (fmt) { |
260 | dstr_putc(&d, ' '); |
3cdc3f3a |
261 | dstr_vputf(&d, fmt, &ap); |
de014da6 |
262 | } |
3cdc3f3a |
263 | dstr_putc(&d, '\n'); |
264 | dosend(a, d.buf, d.len); |
265 | dstr_destroy(&d); |
266 | } |
267 | |
de014da6 |
268 | static void a_write(admin *a, const char *status, const char *tag, |
269 | const char *fmt, ...) |
3cdc3f3a |
270 | { |
271 | va_list ap; |
410c8acf |
272 | va_start(ap, fmt); |
de014da6 |
273 | a_vwrite(a, status, tag, fmt, ap); |
410c8acf |
274 | va_end(ap); |
3cdc3f3a |
275 | } |
276 | |
277 | /* --- @a_ok@, @a_info@, @a_fail@ --- * |
278 | * |
279 | * Arguments: @admin *a@ = connection |
280 | * @const char *fmt@ = format string |
281 | * @...@ = other arguments |
282 | * |
283 | * Returns: --- |
284 | * |
285 | * Use: Convenience functions for @a_write@. |
286 | */ |
287 | |
de014da6 |
288 | static void a_ok(admin *a) { a_write(a, "OK", 0, 0); } |
3cdc3f3a |
289 | |
290 | static void a_info(admin *a, const char *fmt, ...) |
291 | { |
292 | va_list ap; |
293 | va_start(ap, fmt); |
de014da6 |
294 | a_vwrite(a, "INFO", 0, fmt, ap); |
3cdc3f3a |
295 | va_end(ap); |
296 | } |
297 | |
298 | static void a_fail(admin *a, const char *fmt, ...) |
299 | { |
300 | va_list ap; |
301 | va_start(ap, fmt); |
de014da6 |
302 | a_vwrite(a, "FAIL", 0, fmt, ap); |
3cdc3f3a |
303 | va_end(ap); |
304 | } |
305 | |
306 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * |
307 | * |
308 | * Arguments: @unsigned f_and, f_eq@ = filter for connections |
de014da6 |
309 | * @const char *status@ = status string |
3cdc3f3a |
310 | * @const char *fmt@ = pointer to format string |
de014da6 |
311 | * @const char *p@ = pointer to raw string |
3cdc3f3a |
312 | * @size_t sz@ = size of raw string |
313 | * @va_list ap@ = arguments in list |
314 | * @...@ = other arguments |
315 | * |
316 | * Returns: --- |
317 | * |
318 | * Use: Write a message to all admin connections matched by the given |
319 | * filter. |
320 | */ |
321 | |
de014da6 |
322 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a |
323 | const char *p, size_t sz) |
324 | { |
325 | admin *a, *aa; |
326 | dstr d = DSTR_INIT; |
327 | |
328 | if (!(flags & F_INIT)) |
329 | return; |
de014da6 |
330 | dstr_puts(&d, status); |
331 | if (p) { |
332 | dstr_putc(&d, ' '); |
3cdc3f3a |
333 | dstr_putm(&d, p, sz); |
de014da6 |
334 | } |
3cdc3f3a |
335 | dstr_putc(&d, '\n'); |
336 | p = d.buf; |
337 | sz = d.len; |
338 | for (a = admins; a; a = aa) { |
339 | aa = a->next; |
340 | if ((a->f & f_and) == f_eq) |
341 | dosend(a, d.buf, d.len); |
342 | } |
410c8acf |
343 | dstr_destroy(&d); |
344 | } |
345 | |
3cdc3f3a |
346 | static void a_valert(unsigned f_and, unsigned f_eq, const char *tag, |
347 | const char *fmt, va_list ap) |
348 | { |
349 | dstr d = DSTR_INIT; |
350 | |
351 | if (!(flags & F_INIT)) |
352 | return; |
353 | if (fmt) |
354 | dstr_vputf(&d, fmt, &ap); |
355 | a_rawalert(f_and, f_eq, tag, fmt ? d.buf : 0, fmt ? d.len : 0); |
356 | dstr_destroy(&d); |
357 | } |
358 | |
359 | #if 0 /*unused*/ |
360 | static void a_alert(unsigned f_and, unsigned f_eq, const char *tag, |
361 | const char *fmt, ...) |
362 | { |
363 | va_list ap; |
364 | va_start(ap, fmt); |
365 | a_valert(f_and, f_eq, tag, fmt, ap); |
366 | va_end(ap); |
367 | } |
368 | #endif |
369 | |
410c8acf |
370 | /* --- @a_warn@ --- * |
371 | * |
372 | * Arguments: @const char *fmt@ = pointer to format string |
373 | * @...@ = other arguments |
374 | * |
375 | * Returns: --- |
376 | * |
377 | * Use: Informs all admin connections of a warning. |
378 | */ |
379 | |
380 | void a_warn(const char *fmt, ...) |
381 | { |
382 | va_list ap; |
410c8acf |
383 | |
410c8acf |
384 | va_start(ap, fmt); |
3cdc3f3a |
385 | if (flags & F_INIT) |
386 | a_valert(0, 0, "WARN", fmt, ap); |
410c8acf |
387 | else { |
3cdc3f3a |
388 | fprintf(stderr, "%s: ", QUIS); |
389 | vfprintf(stderr, fmt, ap); |
390 | fputc('\n', stderr); |
410c8acf |
391 | } |
3cdc3f3a |
392 | va_end(ap); |
410c8acf |
393 | } |
394 | |
395 | /* --- @a_trace@ --- * |
396 | * |
397 | * Arguments: @const char *p@ = pointer to a buffer |
398 | * @size_t sz@ = size of the buffer |
399 | * @void *v@ = uninteresting pointer |
400 | * |
401 | * Returns: --- |
402 | * |
3cdc3f3a |
403 | * Use: Custom trace output handler. Sends trace messages to |
404 | * interested admin connections. |
410c8acf |
405 | */ |
406 | |
407 | #ifndef NTRACE |
408 | static void a_trace(const char *p, size_t sz, void *v) |
de014da6 |
409 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf |
410 | #endif |
411 | |
3cdc3f3a |
412 | /* --- @a_notify@ --- * |
413 | * |
414 | * Arguments: @const char *fmt@ = pointer to format string |
415 | * @...@ = other arguments |
416 | * |
417 | * Returns: --- |
418 | * |
419 | * Use: Sends a notification to interested admin connections. |
420 | */ |
421 | |
422 | void a_notify(const char *fmt, ...) |
423 | { |
424 | va_list ap; |
425 | |
426 | va_start(ap, fmt); |
427 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap); |
428 | va_end(ap); |
429 | } |
430 | |
410c8acf |
431 | /* --- @a_quit@ --- * |
432 | * |
433 | * Arguments: --- |
434 | * |
435 | * Returns: --- |
436 | * |
437 | * Use: Shuts things down nicely. |
438 | */ |
439 | |
440 | void a_quit(void) |
441 | { |
42da2a58 |
442 | peer *p; |
443 | |
410c8acf |
444 | close(sock.fd); |
445 | unlink(sockname); |
de014da6 |
446 | while ((p = p_first()) != 0) |
447 | p_destroy(p); |
410c8acf |
448 | exit(0); |
449 | } |
450 | |
451 | /* --- @a_sigdie@ --- * |
452 | * |
453 | * Arguments: @int sig@ = signal number |
454 | * @void *v@ = an uninteresting argument |
455 | * |
456 | * Returns: --- |
457 | * |
458 | * Use Shuts down on receipt of a fatal signal. |
459 | */ |
460 | |
461 | static void a_sigdie(int sig, void *v) |
462 | { |
463 | char *p; |
464 | char buf[20]; |
465 | |
466 | switch (sig) { |
467 | case SIGTERM: p = "SIGTERM"; break; |
468 | case SIGINT: p = "SIGINT"; break; |
469 | default: |
3cdc3f3a |
470 | sprintf(buf, "%i", sig); |
410c8acf |
471 | p = buf; |
472 | break; |
473 | } |
3cdc3f3a |
474 | a_warn("SERVER quit signal %s", p); |
410c8acf |
475 | a_quit(); |
476 | } |
477 | |
478 | /* --- @a_sighup@ --- * |
479 | * |
480 | * Arguments: @int sig@ = signal number |
481 | * @void *v@ = an uninteresting argument |
482 | * |
483 | * Returns: --- |
484 | * |
485 | * Use Logs a message about SIGHUP not being useful. |
486 | */ |
487 | |
488 | static void a_sighup(int sig, void *v) |
489 | { |
3cdc3f3a |
490 | a_warn("SERVER ignore signal SIGHUP"); |
410c8acf |
491 | } |
492 | |
0ba8de86 |
493 | /* --- @a_parsetime@ --- * |
494 | * |
495 | * Arguments; @const char *p@ = time string to parse |
496 | * |
497 | * Returns: Time in seconds, or @< 0@ on error. |
498 | */ |
499 | |
500 | static long a_parsetime(const char *p) |
501 | { |
502 | char *q; |
503 | long t = strtol(p, &q, 0); |
504 | |
505 | switch (*q) { |
506 | case 'd': t *= 24; |
507 | case 'h': t *= 60; |
508 | case 'm': t *= 60; |
509 | case 's': if (q[1] != 0) |
510 | default: t = -1; |
511 | case 0: break; |
512 | } |
513 | return (t); |
514 | } |
515 | |
37941236 |
516 | /* --- @a_findpeer@ --- * |
517 | * |
518 | * Arguments: @admin *a@ = admin connection |
519 | * @const char *pn@ = peer name |
520 | * |
521 | * Returns: The peer, or null if not there. |
522 | * |
523 | * Use: Finds a peer, reporting an error if it failed. |
524 | */ |
525 | |
526 | static peer *a_findpeer(admin *a, const char *pn) |
527 | { |
528 | peer *p; |
529 | |
530 | if ((p = p_find(pn)) == 0) |
531 | a_fail(a, "unknown-peer %s", pn); |
532 | return (p); |
533 | } |
534 | |
de014da6 |
535 | /*----- Backgrounded operations -------------------------------------------*/ |
536 | |
060ca767 |
537 | #define BGTAG(bg) \ |
538 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") |
539 | |
de014da6 |
540 | /* --- @a_bgrelease@ --- * |
541 | * |
542 | * Arguments: @admin_bgop *bg@ = backgrounded operation |
543 | * |
544 | * Returns: --- |
545 | * |
546 | * Use: Removes a backgrounded operation from the queue, since |
547 | * (presumably) it's done. |
548 | */ |
549 | |
550 | static void a_bgrelease(admin_bgop *bg) |
551 | { |
552 | admin *a = bg->a; |
553 | |
060ca767 |
554 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
555 | if (bg->tag) xfree(bg->tag); |
556 | else selbuf_enable(&a->b); |
557 | if (bg->next) bg->next->prev = bg->prev; |
558 | if (bg->prev) bg->prev->next = bg->next; |
559 | else a->bg = bg->next; |
de014da6 |
560 | xfree(bg); |
060ca767 |
561 | if (a->f & AF_CLOSE) a_destroy(a); |
562 | a_unlock(a); |
de014da6 |
563 | } |
564 | |
565 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * |
566 | * |
567 | * Arguments: @admin_bgop *bg@ = backgrounded operation |
568 | * @const char *fmt@ = format string |
569 | * @...@ = other arguments |
570 | * |
571 | * Returns: --- |
572 | * |
573 | * Use: Convenience functions for @a_write@. |
574 | */ |
575 | |
576 | static void a_bgok(admin_bgop *bg) |
577 | { a_write(bg->a, "OK", bg->tag, 0); } |
578 | |
579 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) |
580 | { |
581 | va_list ap; |
582 | va_start(ap, fmt); |
583 | a_vwrite(bg->a, "INFO", bg->tag, fmt, ap); |
584 | va_end(ap); |
585 | } |
586 | |
587 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) |
588 | { |
589 | va_list ap; |
590 | va_start(ap, fmt); |
591 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap); |
592 | va_end(ap); |
593 | } |
594 | |
595 | /* --- @a_bgadd@ --- * |
596 | * |
597 | * Arguments: @admin *a@ = administration connection |
598 | * @admin_bgop *bg@ = pointer to background operation |
599 | * @const char *tag@ = background tag, or null for foreground |
600 | * @void (*cancel)(admin_bgop *)@ = cancel function |
601 | * |
602 | * Returns: --- |
603 | * |
604 | * Use: Links a background job into the list. |
605 | */ |
606 | |
607 | static void a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
608 | void (*cancel)(admin_bgop *)) |
609 | { |
610 | if (tag) |
611 | bg->tag = xstrdup(tag); |
612 | else { |
613 | bg->tag = 0; |
614 | selbuf_disable(&a->b); |
615 | } |
616 | bg->a = a; |
617 | bg->cancel = cancel; |
618 | bg->next = a->bg; |
619 | bg->prev = 0; |
060ca767 |
620 | if (a->bg) a->bg->prev = bg; |
de014da6 |
621 | a->bg = bg; |
060ca767 |
622 | a_lock(a); |
623 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
de014da6 |
624 | if (tag) a_write(a, "DETACH", tag, 0); |
625 | } |
626 | |
37941236 |
627 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 |
628 | |
37941236 |
629 | /* --- @a_resolved@ --- * |
de014da6 |
630 | * |
37941236 |
631 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
632 | * @void *v@ = pointer to resolver operation |
de014da6 |
633 | * |
634 | * Returns: --- |
635 | * |
37941236 |
636 | * Use: Handles a completed name resolution. |
de014da6 |
637 | */ |
638 | |
37941236 |
639 | static void a_resolved(struct hostent *h, void *v) |
de014da6 |
640 | { |
37941236 |
641 | admin_resop *r = v; |
642 | |
643 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) |
644 | TIMER; |
645 | if (!h) { |
646 | a_bgfail(&r->bg, "resolve-error %s", r->addr); |
647 | r->func(r, ARES_FAIL); |
648 | } else { |
649 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); |
650 | r->func(r, ARES_OK); |
651 | } |
652 | sel_rmtimer(&r->t); |
653 | xfree(r->addr); |
654 | a_bgrelease(&r->bg); |
655 | } |
de014da6 |
656 | |
37941236 |
657 | /* --- @a_restimer@ --- * |
de014da6 |
658 | * |
37941236 |
659 | * Arguments: @struct timeval *tv@ = timer |
660 | * @void *v@ = pointer to resolver operation |
de014da6 |
661 | * |
662 | * Returns: --- |
663 | * |
37941236 |
664 | * Use: Times out a resolver. |
de014da6 |
665 | */ |
666 | |
37941236 |
667 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 |
668 | { |
37941236 |
669 | admin_resop *r = v; |
670 | |
671 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) |
672 | a_bgfail(&r->bg, "resolver-timeout %s\n", r->addr); |
673 | r->func(r, ARES_FAIL); |
674 | bres_abort(&r->r); |
675 | xfree(r->addr); |
676 | a_bgrelease(&r->bg); |
de014da6 |
677 | } |
678 | |
37941236 |
679 | /* --- @a_rescancel@ --- * |
de014da6 |
680 | * |
37941236 |
681 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 |
682 | * |
683 | * Returns: --- |
684 | * |
37941236 |
685 | * Use: Cancels an add operation. |
de014da6 |
686 | */ |
687 | |
37941236 |
688 | static void a_rescancel(admin_bgop *bg) |
de014da6 |
689 | { |
37941236 |
690 | admin_resop *r = (admin_resop *)bg; |
691 | |
692 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) |
693 | r->func(r, ARES_FAIL); |
694 | sel_rmtimer(&r->t); |
695 | xfree(r->addr); |
696 | bres_abort(&r->r); |
de014da6 |
697 | } |
37941236 |
698 | |
699 | /* --- @a_resolve@ --- * |
410c8acf |
700 | * |
37941236 |
701 | * Arguments: @admin *a@ = administration connection |
702 | * @admin_resop *r@ = resolver operation to run |
703 | * @const char *tag@ = background operation tag |
704 | * @void (*func)(struct admin_resop *, int@ = handler function |
705 | * @unsigned ac@ = number of remaining arguments |
706 | * @char *av[]@ = pointer to remaining arguments |
410c8acf |
707 | * |
708 | * Returns: --- |
709 | * |
37941236 |
710 | * Use: Cranks up a resolver job. |
410c8acf |
711 | */ |
712 | |
37941236 |
713 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
714 | void (*func)(struct admin_resop *, int), |
715 | unsigned ac, char *av[]) |
410c8acf |
716 | { |
37941236 |
717 | struct timeval tv; |
718 | unsigned long pt; |
719 | char *p; |
720 | int i = 0; |
fd3cf232 |
721 | |
37941236 |
722 | /* --- Fill in the easy bits of address --- */ |
723 | |
724 | r->addr = 0; |
725 | r->func = func; |
726 | if (mystrieq(av[i], "inet")) i++; |
727 | if (ac - i != 2) { |
728 | a_fail(a, "bad-addr-syntax [inet] ADDRESS PORT"); |
729 | goto fail; |
730 | } |
731 | r->sa.sin.sin_family = AF_INET; |
732 | r->sasz = sizeof(r->sa.sin); |
733 | r->addr = xstrdup(av[i]); |
734 | pt = strtoul(av[i + 1], &p, 0); |
735 | if (*p) { |
736 | struct servent *s = getservbyname(av[i + 1], "udp"); |
737 | if (!s) { |
738 | a_fail(a, "unknown-service %s", av[i + 1]); |
739 | goto fail; |
740 | } |
741 | pt = ntohs(s->s_port); |
410c8acf |
742 | } |
37941236 |
743 | if (pt == 0 || pt >= 65536) { |
744 | a_fail(a, "invalid-port %lu", pt); |
745 | goto fail; |
746 | } |
747 | r->sa.sin.sin_port = htons(pt); |
748 | |
749 | /* --- Report backgrounding --- * |
750 | * |
751 | * Do this for consistency of interface, even if we're going to get the |
752 | * answer straight away. |
753 | */ |
754 | |
755 | a_bgadd(a, &r->bg, tag, a_rescancel); |
756 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
757 | a->seq, BGTAG(r), r->addr); ) |
758 | |
759 | /* --- If the name is numeric, do it the easy way --- */ |
760 | |
761 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { |
762 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) |
763 | func(r, ARES_OK); |
764 | xfree(r->addr); |
765 | a_bgrelease(&r->bg); |
766 | return; |
767 | } |
768 | |
769 | /* --- Store everything for later and crank up the resolver --- */ |
770 | |
771 | gettimeofday(&tv, 0); |
772 | tv.tv_sec += T_RESOLVE; |
773 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); |
774 | bres_byname(&r->r, r->addr, a_resolved, r); |
775 | return; |
776 | |
777 | fail: |
778 | func(r, ARES_FAIL); |
779 | if (r->addr) xfree(r->addr); |
780 | xfree(r); |
410c8acf |
781 | } |
782 | |
37941236 |
783 | /*----- Adding peers ------------------------------------------------------*/ |
784 | |
785 | /* --- @a_doadd@ --- * |
410c8acf |
786 | * |
37941236 |
787 | * Arguments: @admin_resop *r@ = resolver operation |
788 | * @int rc@ = how it worked |
410c8acf |
789 | * |
790 | * Returns: --- |
791 | * |
37941236 |
792 | * Use: Handles a completed resolution. |
410c8acf |
793 | */ |
794 | |
37941236 |
795 | static void a_doadd(admin_resop *r, int rc) |
410c8acf |
796 | { |
37941236 |
797 | admin_addop *add = (admin_addop *)r; |
798 | |
799 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) |
800 | |
801 | if (rc == ARES_OK) { |
802 | add->peer.sasz = add->r.sasz; |
803 | add->peer.sa = add->r.sa; |
804 | if (p_find(add->peer.name)) |
805 | a_bgfail(&add->r.bg, "peer-exists %s", add->peer.name); |
806 | else if (!p_create(&add->peer)) |
807 | a_bgfail(&add->r.bg, "peer-create-fail %s", add->peer.name); |
808 | else |
809 | a_bgok(&add->r.bg); |
810 | } |
de014da6 |
811 | |
37941236 |
812 | xfree(add->peer.name); |
410c8acf |
813 | } |
814 | |
815 | /* --- @acmd_add@ --- * |
816 | * |
817 | * Arguments: @admin *a@ = connection which requested the addition |
818 | * @unsigned ac@ = argument count |
819 | * @char *av[]@ = pointer to the argument list |
820 | * |
821 | * Returns: --- |
822 | * |
823 | * Use: Adds a new peer. |
824 | */ |
825 | |
826 | static void acmd_add(admin *a, unsigned ac, char *av[]) |
827 | { |
42da2a58 |
828 | unsigned i, j; |
de014da6 |
829 | const char *tag = 0; |
830 | admin_addop *add = 0; |
410c8acf |
831 | |
0ba8de86 |
832 | /* --- Set stuff up --- */ |
833 | |
de014da6 |
834 | add = xmalloc(sizeof(*add)); |
835 | add->peer.name = xstrdup(av[0]); |
836 | add->peer.t_ka = 0; |
837 | add->peer.tops = tun_default; |
37941236 |
838 | |
839 | /* --- Make sure someone's not got there already --- */ |
840 | |
841 | if (p_find(av[0])) { |
842 | a_fail(a, "peer-exists %s", av[0]); |
843 | goto fail; |
844 | } |
0ba8de86 |
845 | |
42da2a58 |
846 | /* --- Parse options --- */ |
847 | |
848 | i = 1; |
849 | for (;;) { |
850 | if (!av[i]) |
851 | goto bad_syntax; |
de014da6 |
852 | if (mystrieq(av[i], "-background")) { |
853 | if (!av[++i]) goto bad_syntax; |
854 | tag = av[i]; |
855 | } else if (mystrieq(av[i], "-tunnel")) { |
0ba8de86 |
856 | if (!av[++i]) goto bad_syntax; |
42da2a58 |
857 | for (j = 0;; j++) { |
858 | if (!tunnels[j]) { |
859 | a_fail(a, "unknown-tunnel %s", av[i]); |
37941236 |
860 | goto fail; |
42da2a58 |
861 | } |
862 | if (mystrieq(av[i], tunnels[j]->name)) { |
de014da6 |
863 | add->peer.tops = tunnels[j]; |
42da2a58 |
864 | break; |
865 | } |
866 | } |
0ba8de86 |
867 | } else if (mystrieq(av[i], "-keepalive")) { |
868 | long t; |
869 | if (!av[++i]) goto bad_syntax; |
870 | if ((t = a_parsetime(av[i])) < 0) { |
871 | a_fail(a, "bad-time-spec %s", av[i]); |
37941236 |
872 | goto fail; |
0ba8de86 |
873 | } |
de014da6 |
874 | add->peer.t_ka = t; |
42da2a58 |
875 | } else if (mystrieq(av[i], "--")) { |
876 | i++; |
877 | break; |
878 | } else |
879 | break; |
0ba8de86 |
880 | i++; |
42da2a58 |
881 | } |
882 | |
37941236 |
883 | /* --- Crank up the resolver --- */ |
de014da6 |
884 | |
37941236 |
885 | a_resolve(a, &add->r, tag, a_doadd, ac - i, av + i); |
42da2a58 |
886 | return; |
887 | |
37941236 |
888 | /* --- Clearing up --- */ |
889 | |
42da2a58 |
890 | bad_syntax: |
0ba8de86 |
891 | a_fail(a, "bad-syntax -- add PEER [OPTIONS] ADDR ..."); |
de014da6 |
892 | fail: |
37941236 |
893 | xfree(add->peer.name); |
894 | xfree(add); |
0ba8de86 |
895 | return; |
896 | } |
897 | |
898 | /*----- Ping --------------------------------------------------------------*/ |
899 | |
de014da6 |
900 | /* --- @a_pingcancel@ --- * |
901 | * |
902 | * Arguments: @admin_bgop *bg@ = background operation block |
903 | * |
904 | * Returns: --- |
905 | * |
906 | * Use: Cancels a running ping. |
907 | */ |
908 | |
909 | static void a_pingcancel(admin_bgop *bg) |
910 | { |
911 | admin_pingop *pg = (admin_pingop *)bg; |
060ca767 |
912 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 |
913 | p_pingdone(&pg->ping, PING_NONOTIFY); |
914 | } |
915 | |
0ba8de86 |
916 | /* --- @a_pong@ --- * |
917 | * |
918 | * Arguments: @int rc@ = return code |
de014da6 |
919 | * @void *v@ = ping operation block |
0ba8de86 |
920 | * |
921 | * Returns: --- |
922 | * |
923 | * Use: Collects what happened to a ping message. |
924 | */ |
925 | |
de014da6 |
926 | static void a_pong(int rc, void *v) |
0ba8de86 |
927 | { |
de014da6 |
928 | admin_pingop *pg = v; |
0ba8de86 |
929 | struct timeval tv; |
930 | double millis; |
931 | |
0ba8de86 |
932 | switch (rc) { |
933 | case PING_OK: |
934 | gettimeofday(&tv, 0); |
de014da6 |
935 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 |
936 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
de014da6 |
937 | a_bginfo(&pg->bg, "ping-ok %.1f", millis); |
938 | a_bgok(&pg->bg); |
0ba8de86 |
939 | break; |
940 | case PING_TIMEOUT: |
de014da6 |
941 | a_bginfo(&pg->bg, "ping-timeout"); |
942 | a_bgok(&pg->bg); |
0ba8de86 |
943 | break; |
944 | case PING_PEERDIED: |
de014da6 |
945 | a_bginfo(&pg->bg, "ping-peer-died"); |
946 | a_bgok(&pg->bg); |
0ba8de86 |
947 | break; |
948 | default: |
949 | abort(); |
950 | } |
060ca767 |
951 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 |
952 | a_bgrelease(&pg->bg); |
0ba8de86 |
953 | } |
954 | |
955 | /* --- @acmd_ping@, @acmd_eping@ --- * |
956 | * |
957 | * Arguments: @admin *a@ = connection which requested the ping |
958 | * @unsigned ac@ = argument count |
959 | * @char *av[]@ = pointer to the argument list |
960 | * |
961 | * Returns: --- |
962 | * |
963 | * Use: Pings a peer. |
964 | */ |
965 | |
966 | static void a_ping(admin *a, unsigned ac, char *av[], |
967 | const char *cmd, unsigned msg) |
968 | { |
969 | long t = T_PING; |
970 | int i; |
971 | peer *p; |
de014da6 |
972 | admin_pingop *pg = 0; |
973 | const char *tag = 0; |
0ba8de86 |
974 | |
975 | i = 0; |
976 | for (;;) { |
977 | if (!av[i]) |
978 | goto bad_syntax; |
de014da6 |
979 | if (mystrieq(av[i], "-background")) { |
980 | if (!av[++i]) goto bad_syntax; |
981 | tag = av[i]; |
982 | } else if (mystrieq(av[i], "-timeout")) { |
0ba8de86 |
983 | if (!av[++i]) goto bad_syntax; |
984 | if ((t = a_parsetime(av[i])) < 0) { |
985 | a_fail(a, "bad-time-spec %s", av[i]); |
986 | return; |
987 | } |
988 | } else if (mystrieq(av[i], "--")) { |
989 | i++; |
990 | break; |
991 | } else |
992 | break; |
993 | i++; |
994 | } |
995 | |
996 | if (!av[i]) goto bad_syntax; |
37941236 |
997 | if ((p = a_findpeer(a, av[i])) == 0) |
0ba8de86 |
998 | return; |
de014da6 |
999 | pg = xmalloc(sizeof(*pg)); |
1000 | gettimeofday(&pg->pingtime, 0); |
1001 | a_bgadd(a, &pg->bg, tag, a_pingcancel); |
060ca767 |
1002 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1003 | BGTAG(pg), cmd, p_name(p)); ) |
de014da6 |
1004 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
1005 | a_bgfail(&pg->bg, "ping-send-failed"); |
1006 | a_bgrelease(&pg->bg); |
1007 | } |
0ba8de86 |
1008 | return; |
1009 | |
1010 | bad_syntax: |
1011 | a_fail(a, "bad-syntax -- %s [OPTIONS] PEER", cmd); |
42da2a58 |
1012 | return; |
410c8acf |
1013 | } |
1014 | |
0ba8de86 |
1015 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1016 | { a_ping(a, ac, av, "ping", MISC_PING); } |
1017 | static void acmd_eping(admin *a, unsigned ac, char *av[]) |
1018 | { a_ping(a, ac, av, "eping", MISC_EPING); } |
0ba8de86 |
1019 | |
410c8acf |
1020 | /*----- Administration commands -------------------------------------------*/ |
1021 | |
1022 | /* --- Miscellaneous commands --- */ |
1023 | |
3cdc3f3a |
1024 | /* --- @traceish@ --- * |
1025 | * |
1026 | * Arguments: @admin *a@ = connection to complain on |
1027 | * @unsigned ac@ = number of arguments |
1028 | * @char *av[]@ = vector of arguments |
1029 | * @const char *what@ = what we're messing with |
1030 | * @const trace_opt *tt@ = options table |
1031 | * @unsigned *ff@ = where the flags are |
1032 | * |
1033 | * Returns: Nonzero if anything changed. |
1034 | * |
1035 | * Use: Guts of trace-ish commands like `trace' and `watch'. |
1036 | */ |
410c8acf |
1037 | |
3cdc3f3a |
1038 | static int traceish(admin *a, unsigned ac, char *av[], |
1039 | const char *what, const trace_opt *tt, unsigned *ff) |
410c8acf |
1040 | { |
3cdc3f3a |
1041 | int ch = 0; |
1042 | |
410c8acf |
1043 | if (!ac || strcmp(av[0], "?") == 0) { |
1044 | const trace_opt *t; |
3cdc3f3a |
1045 | for (t = tt; t->ch; t++) { |
060ca767 |
1046 | a_info(a, "%c%c %s", |
1047 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help); |
410c8acf |
1048 | } |
1049 | } else { |
1050 | unsigned sense = 1; |
3cdc3f3a |
1051 | unsigned f = *ff; |
1052 | const trace_opt *t; |
410c8acf |
1053 | char *p = av[0]; |
1054 | |
1055 | while (*p) { |
1056 | switch (*p) { |
1057 | case '+': sense = 1; break; |
1058 | case '-': sense = 0; break; |
1059 | default: |
3cdc3f3a |
1060 | for (t = tt; t->ch; t++) { |
1061 | if (t->ch == *p) { |
1062 | if (sense) f |= t->f; |
1063 | else f &= ~t->f; |
410c8acf |
1064 | goto tropt_ok; |
1065 | } |
1066 | } |
3cdc3f3a |
1067 | a_fail(a, "bad-%s-option %c", what, *p); |
1068 | return (0); |
410c8acf |
1069 | tropt_ok:; |
1070 | break; |
1071 | } |
1072 | p++; |
1073 | } |
3cdc3f3a |
1074 | *ff = f; |
1075 | ch = 1; |
410c8acf |
1076 | } |
3cdc3f3a |
1077 | a_ok(a); |
1078 | return (ch); |
1079 | } |
1080 | |
1081 | #ifndef NTRACE |
1082 | |
1083 | static void acmd_trace(admin *a, unsigned ac, char *av[]) |
1084 | { |
1085 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) |
1086 | trace_level(tr_flags); |
410c8acf |
1087 | } |
1088 | |
1089 | #endif |
1090 | |
3cdc3f3a |
1091 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
1092 | { |
1093 | traceish(a, ac, av, "watch", w_opts, &a->f); |
1094 | } |
1095 | |
1096 | static void quotify(dstr *d, const char *p) |
1097 | { |
1098 | if (d->len) |
1099 | dstr_putc(d, ' '); |
1100 | if (*p && !p[strcspn(p, "\"' \t\n\v")]) |
1101 | dstr_puts(d, p); |
1102 | else { |
1103 | dstr_putc(d, '\"'); |
1104 | while (*p) { |
1105 | if (*p == '\\' || *p == '\"') |
1106 | dstr_putc(d, '\\'); |
1107 | dstr_putc(d, *p++); |
1108 | } |
1109 | dstr_putc(d, '\"'); |
1110 | } |
1111 | } |
1112 | |
1113 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
1114 | const char *tag, unsigned ac, char *av[]) |
1115 | { |
1116 | dstr d = DSTR_INIT; |
1117 | unsigned i; |
1118 | |
1119 | dstr_puts(&d, "USER"); |
1120 | for (i = 0; i < ac; i++) |
1121 | quotify(&d, av[i]); |
1122 | dstr_putz(&d); |
1123 | a_rawalert(f_and, f_eq, tag, d.buf, d.len); |
1124 | dstr_destroy(&d); |
1125 | a_ok(a); |
1126 | } |
1127 | |
1128 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
1129 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", ac, av); } |
1130 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
1131 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", ac, av); } |
1132 | |
410c8acf |
1133 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
1134 | { |
3cdc3f3a |
1135 | a_info(a, "%u", p_port()); |
1136 | a_ok(a); |
410c8acf |
1137 | } |
1138 | |
410c8acf |
1139 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1140 | { |
1141 | if (flags & F_DAEMON) |
3cdc3f3a |
1142 | a_fail(a, "already-daemon"); |
410c8acf |
1143 | else { |
3cdc3f3a |
1144 | a_notify("DAEMON"); |
93bee2c4 |
1145 | if (a_stdin) |
410c8acf |
1146 | a_destroy(a_stdin); |
410c8acf |
1147 | if (u_daemon()) |
3cdc3f3a |
1148 | a_fail(a, "daemon-error -- %s", strerror(errno)); |
93bee2c4 |
1149 | else { |
410c8acf |
1150 | flags |= F_DAEMON; |
3cdc3f3a |
1151 | a_ok(a); |
93bee2c4 |
1152 | } |
410c8acf |
1153 | } |
1154 | } |
1155 | |
1156 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1157 | { |
1158 | peer *p; |
1159 | for (p = p_first(); p; p = p_next(p)) |
3cdc3f3a |
1160 | a_info(a, "%s", p_name(p)); |
1161 | a_ok(a); |
410c8acf |
1162 | } |
1163 | |
1164 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) |
1165 | { |
1166 | peer *p; |
1167 | |
37941236 |
1168 | if ((p = a_findpeer(a, av[0])) != 0) { |
3cdc3f3a |
1169 | a_info(a, "%s", p_ifname(p)); |
1170 | a_ok(a); |
1171 | } |
410c8acf |
1172 | } |
1173 | |
37941236 |
1174 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1175 | { |
1176 | buf b; |
1177 | |
1178 | buf_init(&b, buf_i, PKBUFSZ); |
1179 | c_new(&b); |
1180 | a_info(a, "%s", b64_encode(BBASE(&b), BLEN(&b))); |
1181 | a_ok(a); |
1182 | } |
1183 | |
1184 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) |
1185 | { |
1186 | base64_ctx b64; |
1187 | buf b; |
1188 | dstr d = DSTR_INIT; |
1189 | |
1190 | base64_init(&b64); |
1191 | base64_decode(&b64, av[0], strlen(av[0]), &d); |
1192 | base64_decode(&b64, 0, 0, &d); |
1193 | buf_init(&b, d.buf, d.len); |
1194 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) |
1195 | a_fail(a, "invalid-challenge"); |
1196 | else |
1197 | a_ok(a); |
1198 | dstr_destroy(&d); |
1199 | } |
1200 | |
1201 | static void acmd_greet(admin *a, unsigned ac, char *av[]) |
1202 | { |
1203 | peer *p; |
1204 | base64_ctx b64; |
1205 | dstr d = DSTR_INIT; |
1206 | |
1207 | if ((p = a_findpeer(a, av[0])) != 0) { |
1208 | base64_init(&b64); |
1209 | base64_decode(&b64, av[1], strlen(av[1]), &d); |
1210 | base64_decode(&b64, 0, 0, &d); |
1211 | p_greet(p, d.buf, d.len); |
1212 | dstr_destroy(&d); |
1213 | a_ok(a); |
1214 | } |
1215 | } |
1216 | |
410c8acf |
1217 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1218 | { |
1219 | peer *p; |
1220 | const addr *ad; |
1221 | |
37941236 |
1222 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf |
1223 | ad = p_addr(p); |
1224 | assert(ad->sa.sa_family == AF_INET); |
3cdc3f3a |
1225 | a_info(a, "INET %s %u", |
410c8acf |
1226 | inet_ntoa(ad->sin.sin_addr), |
1227 | (unsigned)ntohs(ad->sin.sin_port)); |
3cdc3f3a |
1228 | a_ok(a); |
410c8acf |
1229 | } |
1230 | } |
1231 | |
060ca767 |
1232 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1233 | { |
1234 | peer *p; |
1235 | const peerspec *ps; |
1236 | |
37941236 |
1237 | if ((p = a_findpeer(a, av[0])) != 0) { |
1238 | ps = p_spec(p); |
1239 | a_info(a, "tunnel=%s", ps->tops->name); |
1240 | a_info(a, "keepalive=%lu", ps->t_ka); |
1241 | a_ok(a); |
060ca767 |
1242 | } |
060ca767 |
1243 | } |
1244 | |
1245 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) |
1246 | { |
1247 | a_info(a, "implementation=edgeware-tripe"); |
1248 | a_info(a, "version=%s", VERSION); |
1249 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON)); |
1250 | a_ok(a); |
1251 | } |
1252 | |
c7053da9 |
1253 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1254 | { |
1255 | peer *p; |
1256 | stats *st; |
1257 | |
37941236 |
1258 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 |
1259 | return; |
060ca767 |
1260 | |
1261 | st = p_stats(p); |
1262 | a_info(a, "start-time=%s", timestr(st->t_start)); |
1263 | a_info(a, "last-packet-time=%s", timestr(st->t_last)); |
1264 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx)); |
1265 | a_info(a, "packets-in=%lu bytes-in=%lu", st->n_in, st->sz_in); |
1266 | a_info(a, "packets-out=%lu bytes-out=%lu", |
1267 | st->n_out, st->sz_out); |
1268 | a_info(a, "keyexch-packets-in=%lu keyexch-bytes-in=%lu", |
1269 | st->n_kxin, st->sz_kxin); |
1270 | a_info(a, "keyexch-packets-out=%lu keyexch-bytes-out=%lu", |
1271 | st->n_kxout, st->sz_kxout); |
1272 | a_info(a, "ip-packets-in=%lu ip-bytes-in=%lu", |
1273 | st->n_ipin, st->sz_ipin); |
1274 | a_info(a, "ip-packets-out=%lu ip-bytes-out=%lu", |
1275 | st->n_ipout, st->sz_ipout); |
1276 | a_info(a, "rejected-packets=%lu", st->n_reject); |
1277 | a_ok(a); |
c7053da9 |
1278 | } |
1279 | |
410c8acf |
1280 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1281 | { |
1282 | peer *p; |
37941236 |
1283 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf |
1284 | p_destroy(p); |
3cdc3f3a |
1285 | a_ok(a); |
410c8acf |
1286 | } |
1287 | } |
1288 | |
0ba8de86 |
1289 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1290 | { |
1291 | peer *p; |
37941236 |
1292 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 |
1293 | kx_start(&p->kx, 1); |
0ba8de86 |
1294 | a_ok(a); |
1295 | } |
1296 | } |
1297 | |
de014da6 |
1298 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1299 | { p_keyreload(); a_ok(a); } |
1300 | |
410c8acf |
1301 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1302 | { |
3cdc3f3a |
1303 | a_warn("SERVER quit admin-request"); |
1304 | a_ok(a); |
de014da6 |
1305 | a_unlock(a); |
410c8acf |
1306 | a_quit(); |
1307 | } |
1308 | |
3cdc3f3a |
1309 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1310 | { |
1311 | a_info(a, "%s %s", PACKAGE, VERSION); |
1312 | a_ok(a); |
1313 | } |
1314 | |
42da2a58 |
1315 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1316 | { |
1317 | int i; |
1318 | for (i = 0; tunnels[i]; i++) |
1319 | a_info(a, "%s", tunnels[i]->name); |
1320 | a_ok(a); |
1321 | } |
1322 | |
410c8acf |
1323 | /* --- The command table and help --- */ |
1324 | |
1325 | typedef struct acmd { |
1326 | const char *name; |
1327 | const char *help; |
1328 | unsigned argmin, argmax; |
1329 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); |
1330 | } acmd; |
1331 | |
1332 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); |
1333 | |
1334 | static const acmd acmdtab[] = { |
de014da6 |
1335 | { "add", "add PEER [OPTIONS] ADDR ...", |
1336 | 2, 0xffff, acmd_add }, |
1337 | { "addr", "addr PEER", 1, 1, acmd_addr }, |
37941236 |
1338 | { "checkchal", "checkchal CHAL", 1, 1, acmd_checkchal }, |
de014da6 |
1339 | { "daemon", "daemon", 0, 0, acmd_daemon }, |
1340 | { "eping", "eping [OPTIONS] PEER", 1, 0xffff, acmd_eping }, |
1341 | { "forcekx", "forcekx PEER", 1, 1, acmd_forcekx }, |
37941236 |
1342 | { "getchal", "getchal", 0, 0, acmd_getchal }, |
1343 | { "greet", "greet PEER CHAL", 2, 2, acmd_greet }, |
2d752320 |
1344 | { "help", "help", 0, 0, acmd_help }, |
de014da6 |
1345 | { "ifname", "ifname PEER", 1, 1, acmd_ifname }, |
1346 | { "kill", "kill PEER", 1, 1, acmd_kill }, |
1347 | { "list", "list", 0, 0, acmd_list }, |
3cdc3f3a |
1348 | { "notify", "notify MESSAGE ...", 1, 0xffff, acmd_notify }, |
060ca767 |
1349 | { "peerinfo", "peerinfo PEER", 1, 1, acmd_peerinfo }, |
de014da6 |
1350 | { "ping", "ping [OPTIONS] PEER", 1, 0xffff, acmd_ping }, |
2d752320 |
1351 | { "port", "port", 0, 0, acmd_port }, |
de014da6 |
1352 | { "quit", "quit", 0, 0, acmd_quit }, |
1353 | { "reload", "reload", 0, 0, acmd_reload }, |
060ca767 |
1354 | { "servinfo", "servinfo", 0, 0, acmd_servinfo }, |
2d752320 |
1355 | { "stats", "stats PEER", 1, 1, acmd_stats }, |
de014da6 |
1356 | #ifndef NTRACE |
1357 | { "trace", "trace [OPTIONS]", 0, 1, acmd_trace }, |
1358 | #endif |
42da2a58 |
1359 | { "tunnels", "tunnels", 0, 0, acmd_tunnels }, |
de014da6 |
1360 | { "version", "version", 0, 0, acmd_version }, |
1361 | { "warn", "warn MESSAGE ...", 1, 0xffff, acmd_warn }, |
1362 | { "watch", "watch [OPTIONS]", 0, 1, acmd_watch }, |
410c8acf |
1363 | { 0, 0, 0, 0, 0 } |
1364 | }; |
1365 | |
1366 | static void acmd_help(admin *a, unsigned ac, char *av[]) |
1367 | { |
1368 | const acmd *c; |
1369 | for (c = acmdtab; c->name; c++) |
3cdc3f3a |
1370 | a_info(a, "%s", c->help); |
1371 | a_ok(a); |
410c8acf |
1372 | } |
1373 | |
1374 | /*----- Connection handling -----------------------------------------------*/ |
1375 | |
fd3cf232 |
1376 | /* --- @a_lock@ --- * |
410c8acf |
1377 | * |
1378 | * Arguments: @admin *a@ = pointer to an admin block |
1379 | * |
1380 | * Returns: --- |
1381 | * |
fd3cf232 |
1382 | * Use: Locks an admin block so that it won't be destroyed |
1383 | * immediately. |
410c8acf |
1384 | */ |
1385 | |
060ca767 |
1386 | static void a_lock(admin *a) { a->ref++; } |
fd3cf232 |
1387 | |
060ca767 |
1388 | /* --- @a_dodestroy@ --- * |
fd3cf232 |
1389 | * |
1390 | * Arguments: @admin *a@ = pointer to an admin block |
1391 | * |
1392 | * Returns: --- |
1393 | * |
060ca767 |
1394 | * Use: Actually does the legwork of destroying an admin block. |
fd3cf232 |
1395 | */ |
1396 | |
060ca767 |
1397 | static void a_dodestroy(admin *a) |
410c8acf |
1398 | { |
de014da6 |
1399 | admin_bgop *bg, *bbg; |
de014da6 |
1400 | |
fd3cf232 |
1401 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
1402 | a->seq); ) |
1403 | |
410c8acf |
1404 | selbuf_destroy(&a->b); |
de014da6 |
1405 | for (bg = a->bg; bg; bg = bbg) { |
1406 | bbg = bg->next; |
1407 | bg->cancel(bg); |
1408 | if (bg->tag) xfree(bg->tag); |
1409 | xfree(bg); |
410c8acf |
1410 | } |
de014da6 |
1411 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); |
fd3cf232 |
1412 | close(a->w.fd); |
1413 | |
1414 | if (a_stdin == a) |
1415 | a_stdin = 0; |
410c8acf |
1416 | if (a->next) |
1417 | a->next->prev = a->prev; |
1418 | if (a->prev) |
1419 | a->prev->next = a->next; |
1420 | else |
1421 | admins = a->next; |
410c8acf |
1422 | DESTROY(a); |
1423 | } |
1424 | |
060ca767 |
1425 | /* --- @a_unlock@ --- * |
1426 | * |
1427 | * Arguments: @admin *a@ = pointer to an admin block |
1428 | * |
1429 | * Returns: --- |
1430 | * |
1431 | * Use: Unlocks an admin block, allowing its destruction. This is |
1432 | * also the second half of @a_destroy@. |
1433 | */ |
1434 | |
1435 | static void a_unlock(admin *a) |
1436 | { |
1437 | assert(a->ref); |
1438 | if (!--a->ref && (a->f & AF_DEAD)) |
1439 | a_dodestroy(a); |
1440 | } |
1441 | |
fd3cf232 |
1442 | /* --- @a_destroy@ --- * |
1443 | * |
1444 | * Arguments: @admin *a@ = pointer to an admin block |
1445 | * |
1446 | * Returns: --- |
1447 | * |
1448 | * Use: Destroys an admin block. This requires a certain amount of |
1449 | * care. |
1450 | */ |
1451 | |
de014da6 |
1452 | static void freequeue(oqueue *q) |
1453 | { |
1454 | obuf *o, *oo; |
1455 | |
1456 | for (o = q->hd; o; o = oo) { |
1457 | oo = o->next; |
1458 | xfree(o); |
1459 | } |
1460 | q->hd = q->tl = 0; |
1461 | } |
1462 | |
fd3cf232 |
1463 | static void a_destroy(admin *a) |
1464 | { |
1465 | /* --- Don't multiply destroy admin blocks --- */ |
1466 | |
1467 | if (a->f & AF_DEAD) |
1468 | return; |
1469 | |
1470 | /* --- Make sure nobody expects it to work --- */ |
1471 | |
1472 | a->f |= AF_DEAD; |
1473 | T( trace(T_ADMIN, "admin: destroying connection %u", a->seq); ) |
1474 | |
1475 | /* --- Free the output buffers --- */ |
1476 | |
de014da6 |
1477 | if (a->out.hd) |
fd3cf232 |
1478 | sel_rmfile(&a->w); |
de014da6 |
1479 | freequeue(&a->out); |
fd3cf232 |
1480 | |
1481 | /* --- If the block is locked, that's all we can manage --- */ |
1482 | |
060ca767 |
1483 | if (!a->ref) |
1484 | a_dodestroy(a); |
1485 | T( else |
1486 | trace(T_ADMIN, "admin: deferring destruction..."); ) |
fd3cf232 |
1487 | } |
1488 | |
410c8acf |
1489 | /* --- @a_line@ --- * |
1490 | * |
1491 | * Arguments: @char *p@ = pointer to the line read |
3008eabf |
1492 | * @size_t len@ = length of the line |
410c8acf |
1493 | * @void *vp@ = pointer to my admin block |
1494 | * |
1495 | * Returns: --- |
1496 | * |
1497 | * Use: Handles a line of input. |
1498 | */ |
1499 | |
3008eabf |
1500 | static void a_line(char *p, size_t len, void *vp) |
410c8acf |
1501 | { |
1502 | admin *a = vp; |
1503 | const acmd *c; |
3cdc3f3a |
1504 | char *av[16]; |
410c8acf |
1505 | size_t ac; |
1506 | |
8d0c7a83 |
1507 | TIMER; |
fd3cf232 |
1508 | if (a->f & AF_DEAD) |
1509 | return; |
410c8acf |
1510 | if (!p) { |
de014da6 |
1511 | if (!a->bg) |
1512 | a_destroy(a); |
1513 | else { |
1514 | a->f |= AF_CLOSE; |
1515 | selbuf_disable(&a->b); |
1516 | } |
410c8acf |
1517 | return; |
1518 | } |
3cdc3f3a |
1519 | ac = str_qsplit(p, av, 16, 0, STRF_QUOTE); |
410c8acf |
1520 | if (!ac) |
1521 | return; |
410c8acf |
1522 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a |
1523 | if (mystrieq(av[0], c->name)) { |
410c8acf |
1524 | ac--; |
1525 | if (c->argmin > ac || ac > c->argmax) |
3cdc3f3a |
1526 | a_fail(a, "bad-syntax -- %s", c->help); |
fd3cf232 |
1527 | else { |
1528 | a_lock(a); |
410c8acf |
1529 | c->func(a, ac, av + 1); |
fd3cf232 |
1530 | a_unlock(a); |
1531 | } |
410c8acf |
1532 | return; |
1533 | } |
1534 | } |
3cdc3f3a |
1535 | a_fail(a, "unknown-command %s", av[0]); |
410c8acf |
1536 | } |
1537 | |
1538 | /* --- @a_create@ --- * |
1539 | * |
1540 | * Arguments: @int fd_in, fd_out@ = file descriptors to use |
3cdc3f3a |
1541 | * @unsigned f@ = initial flags to set |
410c8acf |
1542 | * |
1543 | * Returns: --- |
1544 | * |
1545 | * Use: Creates a new admin connection. |
1546 | */ |
1547 | |
3cdc3f3a |
1548 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf |
1549 | { |
1550 | admin *a = CREATE(admin); |
3cdc3f3a |
1551 | |
93bee2c4 |
1552 | T( static unsigned seq = 0; |
1553 | a->seq = seq++; ) |
410c8acf |
1554 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 |
1555 | a->bg = 0; |
3cdc3f3a |
1556 | a->f = f; |
de014da6 |
1557 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 |
1558 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf |
1559 | if (fd_out != fd_in) |
fd3cf232 |
1560 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf |
1561 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 |
1562 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 |
1563 | a->out.hd = a->out.tl = 0; |
410c8acf |
1564 | a->next = admins; |
1565 | a->prev = 0; |
de014da6 |
1566 | if (admins) admins->prev = a; |
410c8acf |
1567 | admins = a; |
1568 | } |
1569 | |
1570 | /* --- @a_accept@ --- * |
1571 | * |
1572 | * Arguments: @int fd@ = file descriptor to accept |
1573 | * @unsigned mode@ = what to do |
1574 | * @void *v@ = uninteresting pointer |
1575 | * |
1576 | * Returns: --- |
1577 | * |
1578 | * Use: Accepts a new admin connection. |
1579 | */ |
1580 | |
1581 | static void a_accept(int fd, unsigned mode, void *v) |
1582 | { |
1583 | int nfd; |
1584 | struct sockaddr_un sun; |
1585 | size_t sz = sizeof(sun); |
1586 | |
1587 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { |
1ecee057 |
1588 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
1589 | errno != ECONNABORTED && errno != EPROTO) |
3cdc3f3a |
1590 | a_warn("ADMIN accept-error -- %s", strerror(errno)); |
410c8acf |
1591 | return; |
1592 | } |
3cdc3f3a |
1593 | a_create(nfd, nfd, 0); |
410c8acf |
1594 | } |
1595 | |
1596 | /* --- @a_daemon@ --- * |
1597 | * |
1598 | * Arguments: --- |
1599 | * |
1600 | * Returns: --- |
1601 | * |
1602 | * Use: Informs the admin module that it's a daemon. |
1603 | */ |
1604 | |
1605 | void a_daemon(void) |
1606 | { |
1607 | flags |= F_DAEMON; |
1608 | } |
1609 | |
1610 | /* --- @a_init@ --- * |
1611 | * |
1612 | * Arguments: @const char *name@ = socket name to create |
1613 | * |
1614 | * Returns: --- |
1615 | * |
1616 | * Use: Creates the admin listening socket. |
1617 | */ |
1618 | |
1619 | void a_init(const char *name) |
1620 | { |
1621 | int fd; |
1622 | int n = 5; |
1623 | struct sockaddr_un sun; |
1624 | struct sigaction sa; |
1625 | size_t sz; |
1626 | |
1627 | /* --- Set up the socket address --- */ |
1628 | |
1629 | sz = strlen(name) + 1; |
1630 | if (sz > sizeof(sun.sun_path)) |
1631 | die(EXIT_FAILURE, "socket name `%s' too long", name); |
1632 | BURN(sun); |
1633 | sun.sun_family = AF_UNIX; |
1634 | memcpy(sun.sun_path, name, sz); |
1635 | sz += offsetof(struct sockaddr_un, sun_path); |
1636 | |
1637 | /* --- Attempt to bind to the socket --- */ |
1638 | |
1639 | umask(0077); |
1640 | again: |
1641 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) |
1642 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); |
1643 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { |
1644 | struct stat st; |
1645 | int e = errno; |
1646 | if (errno != EADDRINUSE) { |
1647 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", |
1648 | sun.sun_path, strerror(e)); |
1649 | } |
1650 | if (!n) |
1651 | die(EXIT_FAILURE, "too many retries; giving up"); |
1652 | n--; |
1653 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { |
1654 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", |
1655 | sun.sun_path); |
1656 | } |
1657 | if (errno != ECONNREFUSED) |
1658 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); |
1659 | if (stat(sun.sun_path, &st)) { |
1660 | die(EXIT_FAILURE, "couldn't stat `%s': %s", |
1661 | sun.sun_path, strerror(errno)); |
1662 | } |
1663 | if (!S_ISSOCK(st.st_mode)) |
1664 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); |
c7053da9 |
1665 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf |
1666 | unlink(sun.sun_path); |
1667 | close(fd); |
1668 | goto again; |
1669 | } |
1670 | chmod(sun.sun_path, 0600); |
1671 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
1672 | if (listen(fd, 5)) |
1673 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); |
1674 | |
1675 | /* --- Listen to the socket --- */ |
1676 | |
1677 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); |
1678 | sel_addfile(&sock); |
1679 | sockname = name; |
1680 | bres_init(&sel); |
1681 | T( trace_custom(a_trace, 0); |
1682 | trace(T_ADMIN, "admin: enabled custom tracing"); ) |
1683 | flags |= F_INIT; |
1684 | |
1685 | /* --- Set up signal handlers --- */ |
1686 | |
1687 | sig_add(&s_term, SIGTERM, a_sigdie, 0); |
1688 | sig_add(&s_hup, SIGHUP, a_sighup, 0); |
3cdc3f3a |
1689 | signal(SIGPIPE, SIG_IGN); |
410c8acf |
1690 | sigaction(SIGINT, 0, &sa); |
1691 | if (sa.sa_handler != SIG_IGN) |
1692 | sig_add(&s_int, SIGINT, a_sigdie, 0); |
1693 | } |
1694 | |
1695 | /*----- That's all, folks -------------------------------------------------*/ |