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 | * | |
11ad66c2 MW |
12 | * TrIPE is free software: you can redistribute it and/or modify it under |
13 | * the terms of the GNU General Public License as published by the Free | |
14 | * Software Foundation; either version 3 of the License, or (at your | |
15 | * option) any later version. | |
e04c2d50 | 16 | * |
11ad66c2 MW |
17 | * TrIPE is distributed in the hope that it will be useful, but WITHOUT |
18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
20 | * for more details. | |
e04c2d50 | 21 | * |
410c8acf | 22 | * You should have received a copy of the GNU General Public License |
11ad66c2 | 23 | * along with TrIPE. If not, see <https://www.gnu.org/licenses/>. |
410c8acf | 24 | */ |
25 | ||
410c8acf | 26 | /*----- Header files ------------------------------------------------------*/ |
27 | ||
28 | #include "tripe.h" | |
29 | ||
30 | /*----- Global variables --------------------------------------------------*/ | |
31 | ||
32 | #ifndef NTRACE | |
33 | ||
34 | const trace_opt tr_opts[] = { | |
35 | { 't', T_TUNNEL, "tunnel events" }, | |
36 | { 'r', T_PEER, "peer events" }, | |
37 | { 'a', T_ADMIN, "admin interface" }, | |
410c8acf | 38 | { 's', T_KEYSET, "symmetric keyset management" }, |
39 | { 'x', T_KEYEXCH, "key exchange" }, | |
40 | { 'm', T_KEYMGMT, "key management" }, | |
37941236 | 41 | { 'l', T_CHAL, "challenge management" }, |
388e0319 | 42 | { 'v', T_PRIVSEP, "privilege separation" }, |
37941236 | 43 | { 'p', T_PACKET, "packet contents" }, |
44 | { 'c', T_CRYPTO, "crypto details" }, | |
410c8acf | 45 | { 'A', T_ALL, "all of the above" }, |
46 | { 0, 0, 0 } | |
47 | }; | |
48 | ||
49 | unsigned tr_flags = 0; | |
50 | #endif | |
51 | ||
3cdc3f3a | 52 | static const trace_opt w_opts[] = { |
8ed35e02 | 53 | #ifndef NTRACE |
3cdc3f3a | 54 | { 't', AF_TRACE, "trace messages" }, |
8ed35e02 | 55 | #endif |
3cdc3f3a | 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 | ||
971e5689 MW |
64 | #ifdef HAVE_LIBADNS |
65 | static adns_state ads; | |
66 | sel_hook hook; | |
67 | #endif | |
410c8acf | 68 | static admin *admins; |
c511e1f9 | 69 | static admin *a_dead; |
410c8acf | 70 | static sel_file sock; |
7737eb87 | 71 | static const char *sockname = 0; |
be6a1b7a | 72 | static sym_table a_svcs; |
410c8acf | 73 | static unsigned flags = 0; |
74 | static admin *a_stdin = 0; | |
75 | static sig s_term, s_int, s_hup; | |
76 | ||
77 | #define F_DAEMON 1u | |
78 | #define F_INIT 2u | |
46dde080 | 79 | #define F_FOREGROUND 4u |
410c8acf | 80 | |
81 | #define T_RESOLVE SEC(30) | |
0ba8de86 | 82 | #define T_PING SEC(5) |
410c8acf | 83 | |
fd3cf232 | 84 | static void a_destroy(admin */*a*/); |
fd3cf232 | 85 | |
060ca767 | 86 | #define BOOL(x) ((x) ? "t" : "nil") |
87 | ||
fd3cf232 | 88 | /*----- Output functions --------------------------------------------------*/ |
89 | ||
90 | /* --- @trywrite@ --- * | |
91 | * | |
92 | * Arguments: @admin *a@ = pointer to an admin block | |
93 | * @const char *p@ = pointer to buffer to write | |
94 | * @size_t sz@ = size of data to write | |
95 | * | |
96 | * Returns: The number of bytes written, or less than zero on error. | |
97 | * | |
98 | * Use: Attempts to write data to a client. | |
99 | */ | |
100 | ||
101 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
102 | { | |
103 | ssize_t n, done = 0; | |
104 | ||
105 | again: | |
106 | if (!sz) | |
107 | return (done); | |
108 | n = write(a->w.fd, p, sz); | |
109 | if (n > 0) { | |
110 | done += n; | |
111 | p += n; | |
112 | sz -= n; | |
113 | goto again; | |
114 | } | |
115 | if (n < 0) { | |
116 | if (errno == EINTR) | |
117 | goto again; | |
118 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
119 | a_destroy(a); | |
f43df819 | 120 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 121 | return (-1); |
122 | } | |
123 | } | |
124 | return (done); | |
125 | } | |
126 | ||
de014da6 | 127 | /* --- @doqueue@ -- * |
fd3cf232 | 128 | * |
de014da6 | 129 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 130 | * @const char *p@ = pointer to buffer to write |
de014da6 | 131 | * @size_t sz@ = size of buffer |
fd3cf232 | 132 | * |
de014da6 | 133 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 134 | * |
de014da6 | 135 | * Use: Queues data to be written later. |
fd3cf232 | 136 | */ |
137 | ||
de014da6 | 138 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 139 | { |
fd3cf232 | 140 | obuf *o; |
de014da6 | 141 | int rc = 0; |
142 | size_t n; | |
fd3cf232 | 143 | |
de014da6 | 144 | o = q->tl; |
fd3cf232 | 145 | if (!o) |
de014da6 | 146 | rc = 1; |
fd3cf232 | 147 | else if (o->p_in < o->buf + OBUFSZ) |
148 | goto noalloc; | |
149 | ||
150 | do { | |
151 | o = xmalloc(sizeof(obuf)); | |
152 | o->next = 0; | |
153 | o->p_in = o->p_out = o->buf; | |
de014da6 | 154 | if (q->tl) |
155 | q->tl->next = o; | |
fd3cf232 | 156 | else |
de014da6 | 157 | q->hd = o; |
158 | q->tl = o; | |
fd3cf232 | 159 | |
160 | noalloc: | |
161 | n = o->buf + OBUFSZ - o->p_in; | |
162 | if (n > sz) | |
163 | n = sz; | |
164 | memcpy(o->p_in, p, n); | |
165 | o->p_in += n; | |
166 | p += n; | |
167 | sz -= n; | |
168 | } while (sz); | |
de014da6 | 169 | |
170 | return (rc); | |
171 | } | |
172 | ||
173 | /* --- @dosend@ --- * | |
174 | * | |
175 | * Arguemnts: @admin *a@ = pointer to an admin block | |
176 | * @const char *p@ = pointer to buffer to write | |
177 | * @size_t sz@ = size of data to write | |
178 | * | |
179 | * Returns: --- | |
180 | * | |
181 | * Use: Sends data to an admin client. | |
182 | */ | |
183 | ||
184 | static void dosend(admin *a, const char *p, size_t sz) | |
185 | { | |
186 | ssize_t n; | |
187 | ||
188 | if (a->f & AF_DEAD) | |
189 | return; | |
190 | if (!a->out.hd) { | |
191 | if ((n = trywrite(a, p, sz)) < 0) | |
192 | return; | |
193 | p += n; | |
194 | sz -= n; | |
195 | if (!sz) | |
196 | return; | |
197 | } | |
198 | if (doqueue(&a->out, p, sz)) | |
199 | sel_addfile(&a->w); | |
fd3cf232 | 200 | } |
201 | ||
202 | /* --- @a_flush@ --- * | |
203 | * | |
204 | * Arguments: @int fd@ = file descriptor | |
205 | * @unsigned mode@ = what's happening | |
206 | * @void *v@ = pointer to my admin block | |
207 | * | |
208 | * Returns: --- | |
209 | * | |
210 | * Use: Flushes buffers when a client is ready to read again. | |
211 | */ | |
212 | ||
213 | static void a_flush(int fd, unsigned mode, void *v) | |
214 | { | |
215 | admin *a = v; | |
216 | obuf *o, *oo; | |
217 | ssize_t n; | |
218 | ||
de014da6 | 219 | o = a->out.hd; |
fd3cf232 | 220 | while (o) { |
221 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
222 | return; | |
223 | o->p_out += n; | |
224 | if (o->p_in < o->p_out) | |
225 | break; | |
226 | oo = o; | |
227 | o = o->next; | |
228 | xfree(oo); | |
229 | } | |
de014da6 | 230 | a->out.hd = o; |
fd3cf232 | 231 | if (!o) { |
de014da6 | 232 | a->out.tl = 0; |
fd3cf232 | 233 | sel_rmfile(&a->w); |
234 | } | |
235 | } | |
236 | ||
410c8acf | 237 | /*----- Utility functions -------------------------------------------------*/ |
238 | ||
f43df819 MW |
239 | /* --- @a_vformat@ --- * |
240 | * | |
241 | * Arguments: @dstr *d@ = where to leave the formatted message | |
242 | * @const char *fmt@ = pointer to format string | |
b730d38c | 243 | * @va_list *ap@ = arguments in list |
f43df819 MW |
244 | * |
245 | * Returns: --- | |
246 | * | |
7f73baaf MW |
247 | * Use: Main message token formatting driver. The arguments are |
248 | * interleaved formatting tokens and their parameters, finally | |
249 | * terminated by an entry @A_END@. | |
250 | * | |
251 | * Tokens recognized: | |
252 | * | |
253 | * * "*..." ... -- pretokenized @dstr_putf@-like string | |
254 | * | |
255 | * * "?ADDR" SOCKADDR -- a socket address, to be converted | |
256 | * | |
257 | * * "?B64" BUFFER SIZE -- binary data to be base64-encoded | |
258 | * | |
259 | * * "?TOKENS" VECTOR -- null-terminated vector of tokens | |
260 | * | |
261 | * * "?PEER" PEER -- peer's name | |
262 | * | |
e4b47618 MW |
263 | * * "?ERR" CODE -- system error code |
264 | * | |
265 | * * "?ERRNO" -- system error code from @errno@ | |
7f73baaf MW |
266 | * |
267 | * * "[!]..." ... -- @dstr_putf@-like string as single token | |
f43df819 MW |
268 | */ |
269 | ||
b730d38c | 270 | void a_vformat(dstr *d, const char *fmt, va_list *ap) |
f43df819 MW |
271 | { |
272 | dstr dd = DSTR_INIT; | |
273 | ||
274 | while (fmt) { | |
275 | if (*fmt == '*') { | |
6ebbf072 | 276 | if (d->len) dstr_putc(d, ' '); |
b730d38c | 277 | dstr_vputf(d, fmt + 1, ap); |
f43df819 MW |
278 | } else if (*fmt == '?') { |
279 | if (strcmp(fmt, "?ADDR") == 0) { | |
844abf94 | 280 | const addr *a = va_arg(*ap, const addr *); |
89640f3f MW |
281 | char name[NI_MAXHOST], serv[NI_MAXSERV]; |
282 | int ix, err; | |
283 | if ((err = getnameinfo(&a->sa, addrsz(a), | |
284 | name, sizeof(name), serv, sizeof(serv), | |
285 | (NI_NUMERICHOST | NI_NUMERICSERV | | |
286 | NI_DGRAM)))) { | |
287 | dstr_putf(d, " E%d", err); | |
288 | u_quotify(d, gai_strerror(err)); | |
289 | } else { | |
290 | ix = afix(a->sa.sa_family); assert(ix >= 0); | |
291 | u_quotify(d, aftab[ix].name); | |
292 | u_quotify(d, name); | |
293 | u_quotify(d, serv); | |
f43df819 MW |
294 | } |
295 | } else if (strcmp(fmt, "?B64") == 0) { | |
844abf94 MW |
296 | const octet *p = va_arg(*ap, const octet *); |
297 | size_t n = va_arg(*ap, size_t); | |
37d4c59e | 298 | codec *b64 = base64_class.encoder(CDCF_NOEQPAD, "", 0); |
f43df819 | 299 | dstr_putc(d, ' '); |
37d4c59e MW |
300 | b64->ops->code(b64, p, n, d); |
301 | b64->ops->code(b64, 0, 0, d); | |
302 | b64->ops->destroy(b64); | |
3331936b | 303 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
844abf94 | 304 | const char *const *av = va_arg(*ap, const char *const *); |
0ed0735f | 305 | while (*av) u_quotify(d, *av++); |
f43df819 | 306 | } else if (strcmp(fmt, "?PEER") == 0) |
844abf94 | 307 | u_quotify(d, p_name(va_arg(*ap, peer *))); |
e4b47618 MW |
308 | else if (strcmp(fmt, "?ERR") == 0) { |
309 | int e = va_arg(*ap, int); | |
310 | dstr_putf(d, " E%d", e); | |
311 | u_quotify(d, strerror(e)); | |
312 | } else if (strcmp(fmt, "?ERRNO") == 0) { | |
f43df819 | 313 | dstr_putf(d, " E%d", errno); |
0ed0735f | 314 | u_quotify(d, strerror(errno)); |
f43df819 MW |
315 | } else |
316 | abort(); | |
317 | } else { | |
318 | if (*fmt == '!') fmt++; | |
319 | DRESET(&dd); | |
b730d38c | 320 | dstr_vputf(&dd, fmt, ap); |
0ed0735f | 321 | u_quotify(d, dd.buf); |
f43df819 | 322 | } |
844abf94 | 323 | fmt = va_arg(*ap, const char *); |
f43df819 | 324 | } |
918a33b7 | 325 | dstr_putz(d); |
f43df819 MW |
326 | |
327 | dstr_destroy(&dd); | |
328 | } | |
329 | ||
f241e36c MW |
330 | /* --- @a_format@ --- * |
331 | * | |
332 | * Arguments: @dstr *d@ = where to leave the formatted message | |
333 | * @const char *fmt@ = pointer to format string | |
334 | * | |
335 | * Returns: --- | |
336 | * | |
337 | * Use: Writes a tokenized message into a string, for later | |
338 | * presentation. | |
339 | */ | |
340 | ||
341 | void a_format(dstr *d, const char *fmt, ...) | |
342 | { | |
343 | va_list ap; | |
344 | ||
345 | va_start(ap, fmt); | |
b730d38c | 346 | a_vformat(d, fmt, &ap); |
f241e36c MW |
347 | va_end(ap); |
348 | } | |
349 | ||
3cdc3f3a | 350 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 351 | * |
352 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 353 | * @const char *status@ = status code to report |
354 | * @const char *tag@ = tag string, or null | |
410c8acf | 355 | * @const char *fmt@ = pointer to format string |
844abf94 | 356 | * @va_list *ap@ = arguments in list |
410c8acf | 357 | * @...@ = other arguments |
358 | * | |
359 | * Returns: --- | |
360 | * | |
361 | * Use: Sends a message to an admin connection. | |
362 | */ | |
363 | ||
de014da6 | 364 | static void a_vwrite(admin *a, const char *status, const char *tag, |
b730d38c | 365 | const char *fmt, va_list *ap) |
410c8acf | 366 | { |
410c8acf | 367 | dstr d = DSTR_INIT; |
f98df549 | 368 | |
de014da6 | 369 | if (tag) dstr_puts(&d, "BG"); |
370 | dstr_puts(&d, status); | |
0ed0735f | 371 | if (tag) u_quotify(&d, tag); |
f43df819 | 372 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 373 | dstr_putc(&d, '\n'); |
374 | dosend(a, d.buf, d.len); | |
375 | dstr_destroy(&d); | |
376 | } | |
377 | ||
de014da6 | 378 | static void a_write(admin *a, const char *status, const char *tag, |
379 | const char *fmt, ...) | |
3cdc3f3a | 380 | { |
381 | va_list ap; | |
f98df549 | 382 | |
410c8acf | 383 | va_start(ap, fmt); |
b730d38c | 384 | a_vwrite(a, status, tag, fmt, &ap); |
410c8acf | 385 | va_end(ap); |
3cdc3f3a | 386 | } |
387 | ||
fe182f61 | 388 | /* --- @a_ok@, @a_fail@ --- * |
3cdc3f3a | 389 | * |
390 | * Arguments: @admin *a@ = connection | |
391 | * @const char *fmt@ = format string | |
392 | * @...@ = other arguments | |
393 | * | |
394 | * Returns: --- | |
395 | * | |
396 | * Use: Convenience functions for @a_write@. | |
397 | */ | |
398 | ||
f43df819 | 399 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 400 | |
fe182f61 | 401 | static void a_fail(admin *a, const char *fmt, ...) |
3cdc3f3a | 402 | { |
403 | va_list ap; | |
f98df549 | 404 | |
3cdc3f3a | 405 | va_start(ap, fmt); |
fe182f61 | 406 | a_vwrite(a, "FAIL", 0, fmt, &ap); |
3cdc3f3a | 407 | va_end(ap); |
408 | } | |
409 | ||
fe182f61 MW |
410 | /* --- @a_info@ --- * |
411 | * | |
412 | * Arguments: @admin *a@ = connection | |
413 | * @const char *fmt@ = format string | |
414 | * @...@ = other arguments | |
415 | * | |
416 | * Returns: --- | |
417 | * | |
418 | * Use: Report information to an admin client. | |
419 | */ | |
420 | ||
421 | void a_info(admin *a, const char *fmt, ...) | |
3cdc3f3a | 422 | { |
423 | va_list ap; | |
f98df549 | 424 | |
3cdc3f3a | 425 | va_start(ap, fmt); |
fe182f61 | 426 | a_vwrite(a, "INFO", 0, fmt, &ap); |
3cdc3f3a | 427 | va_end(ap); |
428 | } | |
429 | ||
430 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
431 | * | |
432 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 433 | * @const char *status@ = status string |
3cdc3f3a | 434 | * @const char *fmt@ = pointer to format string |
de014da6 | 435 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 436 | * @size_t sz@ = size of raw string |
844abf94 | 437 | * @va_list *ap@ = arguments in list |
3cdc3f3a | 438 | * @...@ = other arguments |
439 | * | |
440 | * Returns: --- | |
441 | * | |
442 | * Use: Write a message to all admin connections matched by the given | |
443 | * filter. | |
444 | */ | |
445 | ||
de014da6 | 446 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 447 | const char *p, size_t sz) |
448 | { | |
449 | admin *a, *aa; | |
450 | dstr d = DSTR_INIT; | |
e04c2d50 | 451 | |
3cdc3f3a | 452 | if (!(flags & F_INIT)) |
453 | return; | |
de014da6 | 454 | dstr_puts(&d, status); |
455 | if (p) { | |
456 | dstr_putc(&d, ' '); | |
3cdc3f3a | 457 | dstr_putm(&d, p, sz); |
de014da6 | 458 | } |
3cdc3f3a | 459 | dstr_putc(&d, '\n'); |
460 | p = d.buf; | |
461 | sz = d.len; | |
462 | for (a = admins; a; a = aa) { | |
463 | aa = a->next; | |
464 | if ((a->f & f_and) == f_eq) | |
465 | dosend(a, d.buf, d.len); | |
466 | } | |
410c8acf | 467 | dstr_destroy(&d); |
468 | } | |
469 | ||
b9adb829 | 470 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
b730d38c | 471 | const char *fmt, va_list *ap) |
3cdc3f3a | 472 | { |
473 | dstr d = DSTR_INIT; | |
474 | ||
475 | if (!(flags & F_INIT)) | |
476 | return; | |
f43df819 | 477 | a_vformat(&d, fmt, ap); |
b9adb829 | 478 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 479 | dstr_destroy(&d); |
480 | } | |
481 | ||
b9adb829 | 482 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 483 | const char *fmt, ...) |
484 | { | |
485 | va_list ap; | |
f98df549 | 486 | |
3cdc3f3a | 487 | va_start(ap, fmt); |
b730d38c | 488 | a_valert(f_and, f_eq, status, fmt, &ap); |
3cdc3f3a | 489 | va_end(ap); |
490 | } | |
3cdc3f3a | 491 | |
410c8acf | 492 | /* --- @a_warn@ --- * |
493 | * | |
494 | * Arguments: @const char *fmt@ = pointer to format string | |
495 | * @...@ = other arguments | |
496 | * | |
497 | * Returns: --- | |
498 | * | |
499 | * Use: Informs all admin connections of a warning. | |
500 | */ | |
501 | ||
502 | void a_warn(const char *fmt, ...) | |
503 | { | |
504 | va_list ap; | |
410c8acf | 505 | |
410c8acf | 506 | va_start(ap, fmt); |
3cdc3f3a | 507 | if (flags & F_INIT) |
b730d38c | 508 | a_valert(0, 0, "WARN", fmt, &ap); |
410c8acf | 509 | else { |
f43df819 | 510 | dstr d = DSTR_INIT; |
3cdc3f3a | 511 | fprintf(stderr, "%s: ", QUIS); |
b730d38c | 512 | a_vformat(&d, fmt, &ap); |
f43df819 MW |
513 | dstr_putc(&d, '\n'); |
514 | dstr_write(&d, stderr); | |
515 | dstr_destroy(&d); | |
410c8acf | 516 | } |
3cdc3f3a | 517 | va_end(ap); |
410c8acf | 518 | } |
519 | ||
520 | /* --- @a_trace@ --- * | |
521 | * | |
522 | * Arguments: @const char *p@ = pointer to a buffer | |
523 | * @size_t sz@ = size of the buffer | |
524 | * @void *v@ = uninteresting pointer | |
525 | * | |
526 | * Returns: --- | |
527 | * | |
3cdc3f3a | 528 | * Use: Custom trace output handler. Sends trace messages to |
529 | * interested admin connections. | |
410c8acf | 530 | */ |
531 | ||
532 | #ifndef NTRACE | |
533 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 534 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 535 | #endif |
536 | ||
3cdc3f3a | 537 | /* --- @a_notify@ --- * |
538 | * | |
539 | * Arguments: @const char *fmt@ = pointer to format string | |
540 | * @...@ = other arguments | |
541 | * | |
542 | * Returns: --- | |
543 | * | |
544 | * Use: Sends a notification to interested admin connections. | |
545 | */ | |
546 | ||
547 | void a_notify(const char *fmt, ...) | |
548 | { | |
549 | va_list ap; | |
550 | ||
551 | va_start(ap, fmt); | |
b730d38c | 552 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, &ap); |
3cdc3f3a | 553 | va_end(ap); |
554 | } | |
555 | ||
410c8acf | 556 | /* --- @a_sigdie@ --- * |
557 | * | |
558 | * Arguments: @int sig@ = signal number | |
559 | * @void *v@ = an uninteresting argument | |
560 | * | |
561 | * Returns: --- | |
562 | * | |
563 | * Use Shuts down on receipt of a fatal signal. | |
564 | */ | |
565 | ||
566 | static void a_sigdie(int sig, void *v) | |
567 | { | |
568 | char *p; | |
569 | char buf[20]; | |
570 | ||
571 | switch (sig) { | |
572 | case SIGTERM: p = "SIGTERM"; break; | |
573 | case SIGINT: p = "SIGINT"; break; | |
574 | default: | |
3cdc3f3a | 575 | sprintf(buf, "%i", sig); |
410c8acf | 576 | p = buf; |
577 | break; | |
578 | } | |
f43df819 | 579 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
2173bd49 | 580 | lp_end(); |
410c8acf | 581 | } |
582 | ||
583 | /* --- @a_sighup@ --- * | |
584 | * | |
585 | * Arguments: @int sig@ = signal number | |
586 | * @void *v@ = an uninteresting argument | |
587 | * | |
588 | * Returns: --- | |
589 | * | |
590 | * Use Logs a message about SIGHUP not being useful. | |
591 | */ | |
592 | ||
593 | static void a_sighup(int sig, void *v) | |
f98df549 | 594 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 595 | |
0ba8de86 | 596 | /* --- @a_parsetime@ --- * |
597 | * | |
598 | * Arguments; @const char *p@ = time string to parse | |
599 | * | |
600 | * Returns: Time in seconds, or @< 0@ on error. | |
601 | */ | |
602 | ||
603 | static long a_parsetime(const char *p) | |
604 | { | |
605 | char *q; | |
606 | long t = strtol(p, &q, 0); | |
607 | ||
608 | switch (*q) { | |
609 | case 'd': t *= 24; | |
610 | case 'h': t *= 60; | |
611 | case 'm': t *= 60; | |
612 | case 's': if (q[1] != 0) | |
e04c2d50 | 613 | default: t = -1; |
0ba8de86 | 614 | case 0: break; |
615 | } | |
e04c2d50 | 616 | return (t); |
0ba8de86 | 617 | } |
618 | ||
37941236 | 619 | /* --- @a_findpeer@ --- * |
620 | * | |
621 | * Arguments: @admin *a@ = admin connection | |
622 | * @const char *pn@ = peer name | |
623 | * | |
624 | * Returns: The peer, or null if not there. | |
625 | * | |
626 | * Use: Finds a peer, reporting an error if it failed. | |
627 | */ | |
628 | ||
629 | static peer *a_findpeer(admin *a, const char *pn) | |
630 | { | |
631 | peer *p; | |
632 | ||
633 | if ((p = p_find(pn)) == 0) | |
f43df819 | 634 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 635 | return (p); |
636 | } | |
637 | ||
de014da6 | 638 | /*----- Backgrounded operations -------------------------------------------*/ |
639 | ||
060ca767 | 640 | #define BGTAG(bg) \ |
641 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
642 | ||
ff92ffd3 MW |
643 | /* --- @a_bgfind@ --- * |
644 | * | |
645 | * Arguments: @admin *a@ = a client block | |
646 | * @const char *tag@ = the requested tag | |
647 | * | |
648 | * Returns: The requested background job, or null. | |
649 | */ | |
650 | ||
651 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
652 | { | |
653 | admin_bgop *bg; | |
654 | ||
655 | for (bg = a->bg; bg; bg = bg->next) { | |
656 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
657 | return (bg); | |
658 | } | |
659 | return (0); | |
660 | } | |
661 | ||
de014da6 | 662 | /* --- @a_bgrelease@ --- * |
663 | * | |
664 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
665 | * | |
666 | * Returns: --- | |
667 | * | |
668 | * Use: Removes a backgrounded operation from the queue, since | |
669 | * (presumably) it's done. | |
670 | */ | |
671 | ||
672 | static void a_bgrelease(admin_bgop *bg) | |
673 | { | |
674 | admin *a = bg->a; | |
675 | ||
060ca767 | 676 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
677 | if (bg->tag) xfree(bg->tag); | |
678 | else selbuf_enable(&a->b); | |
679 | if (bg->next) bg->next->prev = bg->prev; | |
680 | if (bg->prev) bg->prev->next = bg->next; | |
681 | else a->bg = bg->next; | |
de014da6 | 682 | xfree(bg); |
547a9c13 | 683 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 684 | } |
685 | ||
686 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
687 | * | |
688 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
689 | * @const char *fmt@ = format string | |
690 | * @...@ = other arguments | |
691 | * | |
692 | * Returns: --- | |
693 | * | |
694 | * Use: Convenience functions for @a_write@. | |
695 | */ | |
696 | ||
697 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 698 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 699 | |
700 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
701 | { | |
702 | va_list ap; | |
703 | va_start(ap, fmt); | |
b730d38c | 704 | a_vwrite(bg->a, "INFO", bg->tag, fmt, &ap); |
de014da6 | 705 | va_end(ap); |
706 | } | |
707 | ||
708 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
709 | { | |
710 | va_list ap; | |
711 | va_start(ap, fmt); | |
b730d38c | 712 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, &ap); |
de014da6 | 713 | va_end(ap); |
714 | } | |
715 | ||
716 | /* --- @a_bgadd@ --- * | |
717 | * | |
718 | * Arguments: @admin *a@ = administration connection | |
719 | * @admin_bgop *bg@ = pointer to background operation | |
720 | * @const char *tag@ = background tag, or null for foreground | |
721 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
722 | * | |
ff92ffd3 | 723 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 724 | * |
725 | * Use: Links a background job into the list. | |
726 | */ | |
727 | ||
ff92ffd3 MW |
728 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
729 | void (*cancel)(admin_bgop *)) | |
de014da6 | 730 | { |
ff92ffd3 MW |
731 | if (tag) { |
732 | if (a_bgfind(a, tag)) { | |
733 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
734 | return (-1); | |
735 | } | |
de014da6 | 736 | bg->tag = xstrdup(tag); |
ff92ffd3 | 737 | } |
de014da6 | 738 | else { |
739 | bg->tag = 0; | |
740 | selbuf_disable(&a->b); | |
741 | } | |
742 | bg->a = a; | |
743 | bg->cancel = cancel; | |
744 | bg->next = a->bg; | |
745 | bg->prev = 0; | |
060ca767 | 746 | if (a->bg) a->bg->prev = bg; |
de014da6 | 747 | a->bg = bg; |
060ca767 | 748 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 749 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 750 | return (0); |
de014da6 | 751 | } |
752 | ||
5d46c0f8 MW |
753 | /*----- Job table manipulation --------------------------------------------*/ |
754 | ||
755 | #define JOB_SHIFT 16 | |
756 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
757 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
758 | ||
759 | #define JOB_END 0xfffffffful | |
760 | ||
761 | static unsigned long a_joboffset; | |
762 | ||
763 | /* --- @a_jobidencode@ --- * | |
764 | * | |
765 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
766 | * | |
767 | * Returns: A jobid for this job, in an internal static buffer. | |
768 | * | |
769 | * Use: Constructs a jobid. In order to dissuade people from | |
770 | * predicting jobids, we obfuscate them. | |
771 | * | |
772 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
773 | * are an index into a big array. The high 16 bits are a | |
774 | * sequence number recording how many times that slot has been | |
775 | * reused. | |
776 | * | |
777 | * This `raw' jobid is then obfuscated by adding a randomly- | |
778 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
779 | * odd constant. | |
780 | */ | |
781 | ||
782 | static const char *a_jobidencode(admin_svcop *svc) | |
783 | { | |
784 | admin_jobtable *j = &svc->prov->j; | |
785 | static char buf[10]; | |
786 | unsigned long pre; | |
787 | unsigned seq; | |
788 | ||
789 | assert(svc->index <= JOB_INDEXMASK); | |
790 | seq = j->v[svc->index].seq; | |
791 | assert(seq <= JOB_SEQMASK); | |
792 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
793 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
794 | return (buf); | |
795 | } | |
796 | ||
797 | /* --- @a_jobiddecode@ --- * | |
798 | * | |
799 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
800 | * @const char *jid@ = pointer to a jobid string | |
801 | * | |
802 | * Returns: A pointer to the job's @svcop@ structure. | |
803 | */ | |
804 | ||
805 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
806 | { | |
807 | unsigned i; | |
808 | unsigned long pre; | |
809 | ||
810 | if (jid[0] != 'J') | |
811 | return (0); | |
812 | for (i = 1; i < 9; i++) { | |
813 | if (!isxdigit((unsigned char)jid[i])) | |
814 | return (0); | |
815 | } | |
816 | if (jid[9] != 0) | |
817 | return (0); | |
818 | pre = strtoul(jid + 1, 0, 16); | |
819 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
820 | i = pre & JOB_INDEXMASK; | |
821 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
822 | return (0); | |
823 | return (j->v[i].u.op); | |
824 | } | |
825 | ||
826 | /* --- @a_jobcreate@ --- * | |
827 | * | |
828 | * Arguments: @admin *a@ = pointer to administration client | |
829 | * | |
830 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
831 | * | |
832 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
833 | */ | |
834 | ||
835 | static admin_svcop *a_jobcreate(admin *a) | |
836 | { | |
837 | admin_svcop *svc; | |
838 | unsigned i; | |
839 | unsigned sz; | |
840 | admin_jobtable *j = &a->j; | |
841 | ||
842 | if (j->free != JOB_END) { | |
843 | i = j->free; | |
844 | j->free = j->v[i].u.next; | |
845 | } else { | |
846 | if (j->n == j->sz) { | |
847 | if (j->sz > JOB_INDEXMASK) | |
848 | return (0); | |
849 | sz = j->sz; | |
850 | if (!sz) { | |
851 | j->sz = 16; | |
852 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
853 | } else { | |
854 | j->sz = sz << 1; | |
855 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
856 | } | |
857 | } | |
858 | i = j->n++; | |
859 | j->v[i].seq = 0; | |
860 | } | |
861 | svc = xmalloc(sizeof(*svc)); | |
862 | svc->index = i; | |
863 | svc->prov = a; | |
864 | svc->next = j->active; | |
865 | svc->prev = 0; | |
866 | if (j->active) j->active->prev = svc; | |
867 | j->active = svc; | |
868 | j->v[i].u.op = svc; | |
869 | IF_TRACING(T_ADMIN, { | |
870 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
871 | }) | |
872 | return (svc); | |
873 | } | |
874 | ||
875 | /* --- @a_jobdestroy@ --- * | |
876 | * | |
877 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
878 | * | |
879 | * Returns: --- | |
880 | * | |
881 | * Use: Frees up a completed (or cancelled) job. | |
882 | */ | |
883 | ||
884 | static void a_jobdestroy(admin_svcop *svc) | |
885 | { | |
886 | admin *a = svc->prov; | |
887 | admin_jobtable *j = &a->j; | |
888 | unsigned i = svc->index; | |
889 | ||
890 | IF_TRACING(T_ADMIN, { | |
891 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
892 | }) | |
19bf6ea0 | 893 | assert(j->v[i].u.op == svc); |
5d46c0f8 MW |
894 | j->v[i].u.next = j->free; |
895 | j->v[i].seq++; | |
896 | j->free = i; | |
897 | if (svc->next) svc->next->prev = svc->prev; | |
898 | if (svc->prev) svc->prev->next = svc->next; | |
899 | else j->active = svc->next; | |
900 | } | |
901 | ||
902 | /* --- @a_jobtableinit@ --- * | |
903 | * | |
904 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
905 | * | |
906 | * Returns: --- | |
907 | * | |
908 | * Use: Initializes a job table. | |
909 | */ | |
910 | ||
911 | static void a_jobtableinit(admin_jobtable *j) | |
912 | { | |
913 | if (!a_joboffset) | |
914 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
915 | j->n = j->sz = 0; | |
916 | j->active = 0; | |
917 | j->free = JOB_END; | |
918 | j->v = 0; | |
919 | } | |
920 | ||
921 | /* --- @a_jobtablefinal@ --- * | |
922 | * | |
923 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
924 | * | |
925 | * Returns: --- | |
926 | * | |
927 | * Use: Closes down a job table. | |
928 | */ | |
929 | ||
930 | static void a_jobtablefinal(admin_jobtable *j) | |
931 | { | |
932 | admin_svcop *svc, *ssvc; | |
933 | ||
934 | for (svc = j->active; svc; svc = ssvc) { | |
935 | ssvc = svc->next; | |
936 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
937 | a_bgrelease(&svc->bg); | |
938 | } | |
939 | if (j->v) xfree(j->v); | |
940 | } | |
941 | ||
be6a1b7a MW |
942 | /*----- Services infrastructure -------------------------------------------*/ |
943 | ||
944 | /* --- @a_svcfind@ --- * | |
945 | * | |
946 | * Arguments: @admin *a@ = the requesting client | |
947 | * @const char *name@ = service name wanted | |
948 | * | |
949 | * Returns: The service requested, or null. | |
950 | * | |
951 | * Use: Finds a service; reports an error if the service couldn't be | |
952 | * found. | |
953 | */ | |
954 | ||
955 | static admin_service *a_svcfind(admin *a, const char *name) | |
956 | { | |
957 | admin_service *svc; | |
958 | ||
959 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
960 | a_fail(a, "unknown-service", "%s", name, A_END); | |
961 | return (0); | |
962 | } | |
963 | return (svc); | |
964 | } | |
965 | ||
966 | /* --- @a_svcunlink@ --- * | |
967 | * | |
968 | * Arguments: @admin_service *svc@ = pointer to service structure | |
969 | * | |
970 | * Returns: --- | |
971 | * | |
972 | * Use: Unlinks the service from its provider, without issuing a | |
973 | * message or freeing the structure. The version string is | |
974 | * freed, however. | |
975 | */ | |
976 | ||
977 | static void a_svcunlink(admin_service *svc) | |
978 | { | |
979 | if (svc->next) | |
980 | svc->next->prev = svc->prev; | |
981 | if (svc->prev) | |
982 | svc->prev->next = svc->next; | |
983 | else | |
984 | svc->prov->svcs = svc->next; | |
985 | xfree(svc->version); | |
986 | } | |
987 | ||
988 | /* --- @a_svcrelease@ --- * | |
989 | * | |
990 | * Arguments: @admin_service *svc@ = pointer to service structure | |
991 | * | |
992 | * Returns: --- | |
993 | * | |
994 | * Use: Releases a service and frees its structure. | |
995 | */ | |
996 | ||
997 | static void a_svcrelease(admin_service *svc) | |
998 | { | |
999 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
1000 | a_svcunlink(svc); | |
1001 | sym_remove(&a_svcs, svc); | |
de014da6 | 1002 | } |
1003 | ||
37941236 | 1004 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 1005 | |
971e5689 MW |
1006 | #ifdef HAVE_LIBADNS |
1007 | ||
1008 | /* --- @before_select@ --- * | |
1009 | * | |
1010 | * Arguments: @sel_state *s@ = the @sel@ multiplexor (unused) | |
1011 | * @sel_args *a@ = input to @select@, to be updated | |
1012 | * @void *p@ = a context pointer (unused) | |
1013 | * | |
1014 | * Returns: --- | |
1015 | * | |
1016 | * Use: An I/O multiplexor hook, called just before waiting for I/O | |
1017 | * events. | |
1018 | * | |
1019 | * Currently its main purpose is to wire ADNS into the event | |
1020 | * loop. | |
1021 | */ | |
1022 | ||
1023 | static void before_select(sel_state *s, sel_args *a, void *p) | |
1024 | { | |
1025 | struct timeval now; | |
1026 | adns_query q; | |
1027 | adns_answer *n; | |
1028 | admin_resop *r; | |
1029 | int any = 0; | |
1030 | ||
1031 | /* --- Check for name-resolution progress --- * | |
1032 | * | |
1033 | * If there is any, then clobber the timeout: one of the resolver | |
1034 | * callbacks might have renewed its interest in a file descriptor, but too | |
1035 | * late to affect this @select@ call. | |
1036 | * | |
1037 | * I think, strictly, this is an mLib bug, but it's cheap enough to hack | |
1038 | * around here. Fixing it will wait for mLib 3. | |
1039 | */ | |
1040 | ||
1041 | for (;;) { | |
1042 | q = 0; | |
1043 | if (adns_check(ads, &q, &n, &p)) break; | |
1044 | r = p; | |
1045 | any = 1; | |
1046 | if (n->status != adns_s_ok) { | |
1047 | T( trace(T_ADMIN, "admin: resop %s failed: %s", | |
1048 | BGTAG(r), adns_strerror(n->status)); ) | |
1049 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); | |
1050 | r->func(r, ARES_FAIL); | |
1051 | } else { | |
1052 | T( trace(T_ADMIN, "admin: resop %s ok", BGTAG(r)); ) | |
1053 | assert(n->type == adns_r_addr); | |
1054 | assert(n->nrrs > 0); | |
1055 | assert(n->rrs.addr[0].len <= sizeof(r->sa)); | |
1056 | memcpy(&r->sa, &n->rrs.addr[0].addr, n->rrs.addr[0].len); | |
1057 | setport(&r->sa, r->port); | |
1058 | r->func(r, ARES_OK); | |
1059 | } | |
1060 | free(n); | |
1061 | sel_rmtimer(&r->t); | |
1062 | xfree(r->addr); | |
1063 | a_bgrelease(&r->bg); | |
1064 | } | |
1065 | ||
1066 | if (any) { a->tvp = &a->tv; a->tv.tv_sec = 0; a->tv.tv_usec = 0; } | |
1067 | ||
1068 | gettimeofday(&now, 0); | |
1069 | adns_beforeselect(ads, &a->maxfd, | |
1070 | &a->fd[SEL_READ], &a->fd[SEL_WRITE], &a->fd[SEL_EXC], | |
1071 | &a->tvp, &a->tv, &now); | |
1072 | } | |
1073 | ||
1074 | /* --- @after_select@ --- * | |
1075 | * | |
1076 | * Arguments: @sel_state *s@ = the @sel@ multiplexor (unused) | |
1077 | * @sel_args *a@ = input to @select@, to be updated | |
1078 | * @void *p@ = a context pointer (unused) | |
1079 | * | |
1080 | * Returns: --- | |
1081 | * | |
1082 | * Use: An I/O multiplexor hook, called just after waiting for I/O | |
1083 | * events. | |
1084 | * | |
1085 | * Currently its main purpose is to wire ADNS into the event | |
1086 | * loop. | |
1087 | */ | |
1088 | ||
1089 | static void after_select(sel_state *s, sel_args *a, void *p) | |
1090 | { | |
1091 | struct timeval now; | |
1092 | ||
1093 | gettimeofday(&now, 0); | |
1094 | adns_afterselect(ads, a->maxfd, | |
1095 | &a->fd[SEL_READ], &a->fd[SEL_WRITE], &a->fd[SEL_EXC], | |
1096 | &now); | |
1097 | } | |
1098 | ||
1099 | #else | |
1100 | ||
37941236 | 1101 | /* --- @a_resolved@ --- * |
de014da6 | 1102 | * |
37941236 | 1103 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
1104 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1105 | * |
1106 | * Returns: --- | |
1107 | * | |
37941236 | 1108 | * Use: Handles a completed name resolution. |
de014da6 | 1109 | */ |
1110 | ||
37941236 | 1111 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 1112 | { |
37941236 | 1113 | admin_resop *r = v; |
1114 | ||
f4c9c08f | 1115 | QUICKRAND; |
37941236 | 1116 | if (!h) { |
813d2de9 MW |
1117 | T( trace(T_ADMIN, "admin: resop %s failed: %s", |
1118 | BGTAG(r), hstrerror(h_errno)); ) | |
f43df819 | 1119 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 1120 | r->func(r, ARES_FAIL); |
1121 | } else { | |
813d2de9 | 1122 | T( trace(T_ADMIN, "admin: resop %s ok", BGTAG(r)); ) |
8d513103 | 1123 | r->sa.sin.sin_family = AF_INET; |
37941236 | 1124 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); |
d98625f4 | 1125 | setport(&r->sa, r->port); |
37941236 | 1126 | r->func(r, ARES_OK); |
1127 | } | |
1128 | sel_rmtimer(&r->t); | |
1129 | xfree(r->addr); | |
1130 | a_bgrelease(&r->bg); | |
e04c2d50 | 1131 | } |
de014da6 | 1132 | |
971e5689 MW |
1133 | #endif |
1134 | ||
37941236 | 1135 | /* --- @a_restimer@ --- * |
de014da6 | 1136 | * |
37941236 | 1137 | * Arguments: @struct timeval *tv@ = timer |
1138 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1139 | * |
1140 | * Returns: --- | |
1141 | * | |
37941236 | 1142 | * Use: Times out a resolver. |
de014da6 | 1143 | */ |
1144 | ||
37941236 | 1145 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 1146 | { |
37941236 | 1147 | admin_resop *r = v; |
1148 | ||
1149 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1150 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1151 | r->func(r, ARES_FAIL); |
971e5689 MW |
1152 | #ifdef HAVE_LIBADNS |
1153 | adns_cancel(r->q); | |
1154 | #else | |
37941236 | 1155 | bres_abort(&r->r); |
971e5689 | 1156 | #endif |
37941236 | 1157 | xfree(r->addr); |
1158 | a_bgrelease(&r->bg); | |
de014da6 | 1159 | } |
1160 | ||
37941236 | 1161 | /* --- @a_rescancel@ --- * |
de014da6 | 1162 | * |
37941236 | 1163 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1164 | * |
1165 | * Returns: --- | |
1166 | * | |
37941236 | 1167 | * Use: Cancels an add operation. |
de014da6 | 1168 | */ |
1169 | ||
37941236 | 1170 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1171 | { |
37941236 | 1172 | admin_resop *r = (admin_resop *)bg; |
1173 | ||
1174 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1175 | r->func(r, ARES_FAIL); | |
1176 | sel_rmtimer(&r->t); | |
1177 | xfree(r->addr); | |
971e5689 MW |
1178 | #ifdef HAVE_LIBADNS |
1179 | adns_cancel(r->q); | |
1180 | #else | |
37941236 | 1181 | bres_abort(&r->r); |
971e5689 | 1182 | #endif |
de014da6 | 1183 | } |
37941236 | 1184 | |
1185 | /* --- @a_resolve@ --- * | |
410c8acf | 1186 | * |
37941236 | 1187 | * Arguments: @admin *a@ = administration connection |
1188 | * @admin_resop *r@ = resolver operation to run | |
1189 | * @const char *tag@ = background operation tag | |
1190 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1191 | * @unsigned ac@ = number of remaining arguments | |
1192 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1193 | * |
1194 | * Returns: --- | |
1195 | * | |
37941236 | 1196 | * Use: Cranks up a resolver job. |
410c8acf | 1197 | */ |
1198 | ||
37941236 | 1199 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1200 | void (*func)(struct admin_resop *, int), | |
1201 | unsigned ac, char *av[]) | |
410c8acf | 1202 | { |
37941236 | 1203 | struct timeval tv; |
1204 | unsigned long pt; | |
870ff51a MW |
1205 | int af = AF_UNSPEC; |
1206 | const char *fam = "ANY"; | |
37941236 | 1207 | char *p; |
870ff51a | 1208 | int i = 0, j; |
89640f3f | 1209 | struct addrinfo *ai, *ailist, aihint = { 0 }; |
971e5689 MW |
1210 | #ifdef HAVE_LIBADNS |
1211 | int err; | |
1212 | adns_queryflags qf; | |
1213 | #endif | |
fd3cf232 | 1214 | |
37941236 | 1215 | /* --- Fill in the easy bits of address --- */ |
1216 | ||
452bf3f6 | 1217 | r->bg.tag = "<starting>"; |
37941236 | 1218 | r->addr = 0; |
1219 | r->func = func; | |
870ff51a MW |
1220 | if (mystrieq(av[i], "any")) |
1221 | { fam = "ANY"; af = AF_UNSPEC; i++; } | |
1222 | else for (j = 0; j < NADDRFAM; j++) { | |
1223 | if (mystrieq(av[i], aftab[j].name)) { | |
063c9648 | 1224 | if (udpsock[j].sf.fd < 0) { |
a8211197 MW |
1225 | a_fail(a, "disabled-address-family", "%s", aftab[j].name, A_END); |
1226 | goto fail; | |
1227 | } | |
870ff51a MW |
1228 | fam = aftab[j].name; |
1229 | af = aftab[j].af; | |
1230 | i++; | |
1231 | break; | |
1232 | } | |
1233 | } | |
165efde7 | 1234 | if (ac - i != 1 && ac - i != 2) { |
870ff51a | 1235 | a_fail(a, "bad-addr-syntax", "[FAMILY] ADDRESS [PORT]", A_END); |
37941236 | 1236 | goto fail; |
1237 | } | |
37941236 | 1238 | r->addr = xstrdup(av[i]); |
6f88042a | 1239 | if (!av[i + 1]) |
165efde7 MW |
1240 | pt = TRIPE_PORT; |
1241 | else { | |
1242 | pt = strtoul(av[i + 1], &p, 0); | |
1243 | if (*p) { | |
1244 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1245 | if (!s) { | |
1246 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); | |
1247 | goto fail; | |
1248 | } | |
1249 | pt = ntohs(s->s_port); | |
37941236 | 1250 | } |
410c8acf | 1251 | } |
37941236 | 1252 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1253 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1254 | goto fail; |
1255 | } | |
8d513103 | 1256 | r->port = pt; |
37941236 | 1257 | |
1258 | /* --- Report backgrounding --- * | |
1259 | * | |
1260 | * Do this for consistency of interface, even if we're going to get the | |
1261 | * answer straight away. | |
1262 | */ | |
1263 | ||
ff92ffd3 MW |
1264 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1265 | goto fail; | |
870ff51a MW |
1266 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s', family `%s'", |
1267 | a->seq, BGTAG(r), r->addr, fam); ) | |
37941236 | 1268 | |
1269 | /* --- If the name is numeric, do it the easy way --- */ | |
e04c2d50 | 1270 | |
a8211197 | 1271 | aihint.ai_family = af; |
89640f3f MW |
1272 | aihint.ai_socktype = SOCK_DGRAM; |
1273 | aihint.ai_protocol = IPPROTO_UDP; | |
1274 | aihint.ai_flags = AI_NUMERICHOST; | |
1275 | if (!getaddrinfo(av[i], 0, &aihint, &ailist)) { | |
1276 | for (ai = ailist; ai; ai = ai->ai_next) { | |
063c9648 | 1277 | if ((j = afix(ai->ai_family)) >= 0 && udpsock[j].sf.fd >= 0) |
89640f3f MW |
1278 | break; |
1279 | } | |
1280 | if (!ai) { | |
1281 | T( trace(T_ADMIN, "admin: resop %s failed: " | |
1282 | "no suitable addresses returned", BGTAG(r)); ) | |
1283 | a_bgfail(&r->bg, "resolve-error", "%s" , r->addr, A_END); | |
1284 | func(r, ARES_FAIL); | |
1285 | } else { | |
1286 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1287 | assert(ai->ai_addrlen <= sizeof(r->sa)); | |
1288 | memcpy(&r->sa, ai->ai_addr, ai->ai_addrlen); | |
1289 | setport(&r->sa, r->port); | |
1290 | func(r, ARES_OK); | |
1291 | } | |
1292 | freeaddrinfo(ailist); | |
37941236 | 1293 | xfree(r->addr); |
1294 | a_bgrelease(&r->bg); | |
1295 | return; | |
1296 | } | |
1297 | ||
1298 | /* --- Store everything for later and crank up the resolver --- */ | |
1299 | ||
1300 | gettimeofday(&tv, 0); | |
1301 | tv.tv_sec += T_RESOLVE; | |
1302 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
971e5689 | 1303 | #ifdef HAVE_LIBADNS |
a8211197 MW |
1304 | qf = adns_qf_search; |
1305 | for (j = 0; j < NADDRFAM; j++) { | |
063c9648 | 1306 | if ((af == AF_UNSPEC || af == aftab[i].af) && udpsock[j].sf.fd >= 0) |
a8211197 MW |
1307 | qf |= aftab[j].qf; |
1308 | } | |
971e5689 MW |
1309 | if ((err = adns_submit(ads, r->addr, adns_r_addr, qf, r, &r->q)) != 0) { |
1310 | T( trace(T_ADMIN, "admin: resop %s adns_submit failed: %s", | |
1311 | BGTAG(r), strerror(err)); ) | |
1312 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); | |
1313 | goto fail_release; | |
1314 | } | |
1315 | #else | |
a8211197 MW |
1316 | if (af != AF_UNSPEC && af != AF_INET) { |
1317 | T( trace(T_ADMIN, "admin: resop %s failed: unsupported address family", | |
1318 | BGTAG(r)); ) | |
1319 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); | |
1320 | goto fail_release; | |
1321 | } | |
063c9648 | 1322 | if (udpsock[AFIX_INET].sf.fd < 0) { |
a8211197 MW |
1323 | a_bgfail(&r->bg, "disabled-address-family", "INET", A_END); |
1324 | goto fail_release; | |
1325 | } | |
37941236 | 1326 | bres_byname(&r->r, r->addr, a_resolved, r); |
971e5689 | 1327 | #endif |
37941236 | 1328 | return; |
1329 | ||
1330 | fail: | |
1331 | func(r, ARES_FAIL); | |
1332 | if (r->addr) xfree(r->addr); | |
1333 | xfree(r); | |
870ff51a MW |
1334 | return; |
1335 | ||
1336 | fail_release: | |
1337 | func(r, ARES_FAIL); | |
1338 | xfree(r->addr); | |
1339 | a_bgrelease(&r->bg); | |
410c8acf | 1340 | } |
1341 | ||
e7a4d919 MW |
1342 | /*----- Option parsing ----------------------------------------------------*/ |
1343 | ||
1344 | #define OPTIONS(argc, argv, guts) do { \ | |
1345 | char **o_av = argv; \ | |
1346 | for (;; o_av++) { \ | |
1347 | if (!*o_av) \ | |
1348 | break; \ | |
1349 | if (mystrieq(*o_av, "--")) { \ | |
1350 | o_av++; \ | |
1351 | break; \ | |
1352 | } \ | |
1353 | guts \ | |
1354 | if (**o_av == '-') \ | |
1355 | goto bad_syntax; \ | |
1356 | break; \ | |
1357 | } \ | |
1358 | argc -= o_av - argv; \ | |
1359 | argv = o_av; \ | |
1360 | } while (0) | |
1361 | ||
1362 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1363 | ||
1364 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1365 | const char *arg; \ | |
1366 | arg = *++o_av; \ | |
1367 | if (!arg) goto bad_syntax; \ | |
1368 | guts \ | |
1369 | }) | |
1370 | ||
1371 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1372 | long arg; \ | |
1373 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1374 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1375 | goto fail; \ | |
1376 | } \ | |
1377 | guts \ | |
1378 | }) | |
1379 | ||
37941236 | 1380 | /*----- Adding peers ------------------------------------------------------*/ |
1381 | ||
1382 | /* --- @a_doadd@ --- * | |
410c8acf | 1383 | * |
37941236 | 1384 | * Arguments: @admin_resop *r@ = resolver operation |
1385 | * @int rc@ = how it worked | |
410c8acf | 1386 | * |
1387 | * Returns: --- | |
1388 | * | |
37941236 | 1389 | * Use: Handles a completed resolution. |
410c8acf | 1390 | */ |
1391 | ||
37941236 | 1392 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1393 | { |
37941236 | 1394 | admin_addop *add = (admin_addop *)r; |
1395 | ||
1396 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1397 | ||
1398 | if (rc == ARES_OK) { | |
37941236 | 1399 | add->peer.sa = add->r.sa; |
c8e02c8a MW |
1400 | if (p_findbyaddr(&add->r.sa)) |
1401 | a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END); | |
1402 | else if (p_find(add->peer.name)) | |
f43df819 | 1403 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 1404 | else if (!p_create(&add->peer)) |
f43df819 | 1405 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 1406 | else |
1407 | a_bgok(&add->r.bg); | |
1408 | } | |
de014da6 | 1409 | |
48b84569 | 1410 | if (add->peer.tag) xfree(add->peer.tag); |
71862c07 | 1411 | if (add->peer.privtag) xfree(add->peer.privtag); |
8362ac1c | 1412 | if (add->peer.knock) xfree(add->peer.knock); |
37941236 | 1413 | xfree(add->peer.name); |
410c8acf | 1414 | } |
1415 | ||
1416 | /* --- @acmd_add@ --- * | |
1417 | * | |
1418 | * Arguments: @admin *a@ = connection which requested the addition | |
1419 | * @unsigned ac@ = argument count | |
1420 | * @char *av[]@ = pointer to the argument list | |
1421 | * | |
1422 | * Returns: --- | |
1423 | * | |
1424 | * Use: Adds a new peer. | |
1425 | */ | |
1426 | ||
1427 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
1428 | { | |
de014da6 | 1429 | const char *tag = 0; |
9986f0b5 | 1430 | admin_addop *add; |
24898e7e | 1431 | const tunnel_ops *tops; |
410c8acf | 1432 | |
0ba8de86 | 1433 | /* --- Set stuff up --- */ |
1434 | ||
de014da6 | 1435 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 1436 | add->peer.name = 0; |
48b84569 | 1437 | add->peer.tag = 0; |
fe2a5dcf | 1438 | add->peer.privtag = 0; |
8362ac1c | 1439 | add->peer.knock = 0; |
de014da6 | 1440 | add->peer.t_ka = 0; |
24898e7e | 1441 | add->peer.tops = p_dflttun(); |
8743c776 | 1442 | add->peer.f = 0; |
37941236 | 1443 | |
42da2a58 | 1444 | /* --- Parse options --- */ |
1445 | ||
e7a4d919 MW |
1446 | OPTIONS(ac, av, { |
1447 | OPTARG("-background", arg, { tag = arg; }) | |
1448 | OPTARG("-tunnel", arg, { | |
24898e7e MW |
1449 | if ((tops = p_findtun(arg)) == 0) |
1450 | { a_fail(a, "unknown-tunnel", "%s", arg, A_END); goto fail; } | |
1451 | add->peer.tops = tops; | |
e7a4d919 MW |
1452 | }) |
1453 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
8743c776 | 1454 | OPT("-cork", { add->peer.f |= KXF_CORK; }) |
067aa5f0 | 1455 | OPT("-ephemeral", { add->peer.f |= PSF_EPHEM; }) |
48b84569 | 1456 | OPTARG("-key", arg, { |
97b8d61c | 1457 | if (add->peer.tag) xfree(add->peer.tag); |
48b84569 MW |
1458 | add->peer.tag = xstrdup(arg); |
1459 | }) | |
c60b5015 | 1460 | OPT("-mobile", { add->peer.f |= PSF_MOBILE; }) |
fe2a5dcf | 1461 | OPTARG("-priv", arg, { |
97b8d61c | 1462 | if (add->peer.privtag) xfree(add->peer.privtag); |
fe2a5dcf MW |
1463 | add->peer.privtag = xstrdup(arg); |
1464 | }) | |
8362ac1c MW |
1465 | OPTARG("-knock", arg, { |
1466 | if (add->peer.knock) xfree(add->peer.knock); | |
1467 | add->peer.knock = xstrdup(arg); | |
1468 | }) | |
e7a4d919 | 1469 | }); |
42da2a58 | 1470 | |
9986f0b5 MW |
1471 | /* --- Make sure someone's not got there already --- */ |
1472 | ||
bcf3764a | 1473 | if (!av[0] || !av[1]) |
9986f0b5 | 1474 | goto bad_syntax; |
e7a4d919 MW |
1475 | if (p_find(*av)) { |
1476 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1477 | goto fail; |
42da2a58 | 1478 | } |
e7a4d919 MW |
1479 | add->peer.name = xstrdup(*av++); |
1480 | ac--; | |
42da2a58 | 1481 | |
37941236 | 1482 | /* --- Crank up the resolver --- */ |
de014da6 | 1483 | |
e7a4d919 | 1484 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1485 | return; |
1486 | ||
37941236 | 1487 | /* --- Clearing up --- */ |
1488 | ||
42da2a58 | 1489 | bad_syntax: |
9986f0b5 | 1490 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1491 | fail: |
9986f0b5 | 1492 | if (add->peer.name) xfree(add->peer.name); |
48b84569 | 1493 | if (add->peer.tag) xfree(add->peer.tag); |
fe2a5dcf | 1494 | if (add->peer.privtag) xfree(add->peer.privtag); |
8362ac1c | 1495 | if (add->peer.knock) xfree(add->peer.knock); |
37941236 | 1496 | xfree(add); |
0ba8de86 | 1497 | return; |
1498 | } | |
1499 | ||
1500 | /*----- Ping --------------------------------------------------------------*/ | |
1501 | ||
de014da6 | 1502 | /* --- @a_pingcancel@ --- * |
1503 | * | |
1504 | * Arguments: @admin_bgop *bg@ = background operation block | |
1505 | * | |
1506 | * Returns: --- | |
1507 | * | |
1508 | * Use: Cancels a running ping. | |
1509 | */ | |
1510 | ||
1511 | static void a_pingcancel(admin_bgop *bg) | |
1512 | { | |
1513 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1514 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1515 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1516 | } | |
1517 | ||
0ba8de86 | 1518 | /* --- @a_pong@ --- * |
1519 | * | |
1520 | * Arguments: @int rc@ = return code | |
de014da6 | 1521 | * @void *v@ = ping operation block |
0ba8de86 | 1522 | * |
1523 | * Returns: --- | |
1524 | * | |
1525 | * Use: Collects what happened to a ping message. | |
1526 | */ | |
1527 | ||
de014da6 | 1528 | static void a_pong(int rc, void *v) |
0ba8de86 | 1529 | { |
de014da6 | 1530 | admin_pingop *pg = v; |
0ba8de86 | 1531 | struct timeval tv; |
1532 | double millis; | |
1533 | ||
0ba8de86 | 1534 | switch (rc) { |
1535 | case PING_OK: | |
1536 | gettimeofday(&tv, 0); | |
de014da6 | 1537 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1538 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1539 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1540 | a_bgok(&pg->bg); |
0ba8de86 | 1541 | break; |
1542 | case PING_TIMEOUT: | |
f43df819 | 1543 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1544 | a_bgok(&pg->bg); |
0ba8de86 | 1545 | break; |
1546 | case PING_PEERDIED: | |
f43df819 | 1547 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1548 | a_bgok(&pg->bg); |
0ba8de86 | 1549 | break; |
1550 | default: | |
1551 | abort(); | |
1552 | } | |
060ca767 | 1553 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1554 | a_bgrelease(&pg->bg); |
0ba8de86 | 1555 | } |
1556 | ||
1557 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1558 | * | |
1559 | * Arguments: @admin *a@ = connection which requested the ping | |
1560 | * @unsigned ac@ = argument count | |
1561 | * @char *av[]@ = pointer to the argument list | |
1562 | * | |
1563 | * Returns: --- | |
1564 | * | |
1565 | * Use: Pings a peer. | |
1566 | */ | |
1567 | ||
1568 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1569 | const char *cmd, unsigned msg) | |
1570 | { | |
1571 | long t = T_PING; | |
0ba8de86 | 1572 | peer *p; |
de014da6 | 1573 | admin_pingop *pg = 0; |
1574 | const char *tag = 0; | |
0ba8de86 | 1575 | |
e7a4d919 MW |
1576 | OPTIONS(ac, av, { |
1577 | OPTARG("-background", arg, { tag = arg; }) | |
1578 | OPTTIME("-timeout", arg, { t = arg; }) | |
1579 | }); | |
1580 | if (!*av || av[1]) goto bad_syntax; | |
1581 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1582 | return; |
de014da6 | 1583 | pg = xmalloc(sizeof(*pg)); |
1584 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1585 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1586 | goto fail; | |
060ca767 | 1587 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1588 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1589 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1590 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1591 | a_bgrelease(&pg->bg); |
1592 | } | |
0ba8de86 | 1593 | return; |
e04c2d50 | 1594 | |
0ba8de86 | 1595 | bad_syntax: |
f43df819 | 1596 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1597 | fail: |
ff92ffd3 | 1598 | if (pg) xfree(pg); |
42da2a58 | 1599 | return; |
410c8acf | 1600 | } |
1601 | ||
0ba8de86 | 1602 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1603 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1604 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1605 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1606 | |
be6a1b7a MW |
1607 | /*----- Service commands --------------------------------------------------*/ |
1608 | ||
1609 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1610 | { | |
1611 | admin_service *svc; | |
1612 | unsigned f; | |
1613 | ||
1614 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1615 | if (f) { | |
1616 | if (versioncmp(av[1], svc->version) <= 0) { | |
1617 | a_fail(a, | |
1618 | "service-exists", | |
1619 | "%s", SYM_NAME(svc), | |
1620 | "%s", svc->version, | |
1621 | A_END); | |
1622 | return; | |
1623 | } | |
1624 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1625 | a_svcunlink(svc); | |
1626 | } | |
1627 | svc->prov = a; | |
1628 | svc->version = xstrdup(av[1]); | |
1629 | svc->next = a->svcs; | |
1630 | svc->prev = 0; | |
1631 | if (a->svcs) a->svcs->prev = svc; | |
1632 | a->svcs = svc; | |
1633 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1634 | a_ok(a); | |
1635 | } | |
1636 | ||
1637 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1638 | { | |
1639 | admin_service *svc; | |
1640 | ||
1641 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1642 | return; | |
1643 | if (svc->prov != a) { | |
1644 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1645 | return; | |
1646 | } | |
1647 | a_svcrelease(svc); | |
1648 | a_ok(a); | |
1649 | } | |
1650 | ||
1651 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1652 | { | |
1653 | admin_service *svc; | |
1654 | ||
1655 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1656 | return; | |
1657 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1658 | a_fail(a, "service-too-old", | |
1659 | "%s", SYM_NAME(svc), | |
1660 | "%s", svc->version, | |
1661 | A_END); | |
1662 | return; | |
1663 | } | |
1664 | a_ok(a); | |
1665 | } | |
1666 | ||
1667 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1668 | { | |
1669 | admin_service *svc; | |
1670 | ||
1671 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1672 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1673 | a_ok(a); | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1678 | { | |
1679 | admin_service *svc; | |
1680 | sym_iter i; | |
1681 | ||
1682 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1683 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1684 | a_ok(a); | |
1685 | } | |
1686 | ||
ef2f29c9 MW |
1687 | static void a_canceljob(admin_bgop *bg) |
1688 | { | |
1689 | admin_svcop *svc = (admin_svcop *)bg; | |
1690 | ||
1691 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1692 | a_jobdestroy(svc); | |
1693 | } | |
1694 | ||
1695 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1696 | { | |
1697 | const char *tag = 0; | |
1698 | admin_service *svc; | |
1699 | admin_svcop *svcop; | |
1700 | const char *ver = 0; | |
1701 | dstr d = DSTR_INIT; | |
1702 | ||
1703 | OPTIONS(ac, av, { | |
1704 | OPTARG("-background", arg, { tag = arg; }) | |
1705 | OPTARG("-version", arg, { ver = arg; }) | |
1706 | }); | |
1707 | if (!*av) goto bad_syntax; | |
1708 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1709 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1710 | a_fail(a, "service-too-old", | |
1711 | "%s", SYM_NAME(svc), | |
1712 | "%s", svc->version, | |
1713 | A_END); | |
1714 | goto fail; | |
1715 | } | |
1716 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1717 | a_fail(a, "provider-overloaded", A_END); | |
1718 | goto fail; | |
1719 | } | |
1720 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1721 | a_jobdestroy(svcop); | |
1722 | goto fail; | |
1723 | } | |
1724 | a_write(svc->prov, "SVCJOB", 0, | |
1725 | "%s", a_jobidencode(svcop), | |
1726 | "?TOKENS", av, | |
1727 | A_END); | |
1728 | goto done; | |
1729 | ||
1730 | bad_syntax: | |
1731 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1732 | fail: | |
1733 | done: | |
1734 | dstr_destroy(&d); | |
1735 | return; | |
1736 | } | |
1737 | ||
1738 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1739 | { | |
1740 | admin_svcop *svc; | |
1741 | ||
1742 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1743 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1744 | return; | |
1745 | } | |
1746 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1747 | if (donep) { | |
1748 | a_jobdestroy(svc); | |
1749 | a_bgrelease(&svc->bg); | |
1750 | } | |
1751 | a_ok(a); | |
1752 | } | |
1753 | ||
1754 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1755 | { a_replycmd(a, "OK", 1, av); } | |
1756 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1757 | { a_replycmd(a, "INFO", 0, av); } | |
1758 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1759 | { a_replycmd(a, "FAIL", 1, av); } | |
1760 | ||
410c8acf | 1761 | /*----- Administration commands -------------------------------------------*/ |
1762 | ||
1763 | /* --- Miscellaneous commands --- */ | |
1764 | ||
3cdc3f3a | 1765 | /* --- @traceish@ --- * |
1766 | * | |
1767 | * Arguments: @admin *a@ = connection to complain on | |
1768 | * @unsigned ac@ = number of arguments | |
1769 | * @char *av[]@ = vector of arguments | |
1770 | * @const char *what@ = what we're messing with | |
1771 | * @const trace_opt *tt@ = options table | |
1772 | * @unsigned *ff@ = where the flags are | |
1773 | * | |
1774 | * Returns: Nonzero if anything changed. | |
1775 | * | |
1776 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1777 | */ | |
410c8acf | 1778 | |
3cdc3f3a | 1779 | static int traceish(admin *a, unsigned ac, char *av[], |
1780 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1781 | { |
3cdc3f3a | 1782 | int ch = 0; |
1783 | ||
410c8acf | 1784 | if (!ac || strcmp(av[0], "?") == 0) { |
1785 | const trace_opt *t; | |
3cdc3f3a | 1786 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1787 | a_info(a, "*%c%c %s", |
1788 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1789 | } |
1790 | } else { | |
1791 | unsigned sense = 1; | |
3cdc3f3a | 1792 | unsigned f = *ff; |
1793 | const trace_opt *t; | |
410c8acf | 1794 | char *p = av[0]; |
1795 | ||
1796 | while (*p) { | |
1797 | switch (*p) { | |
1798 | case '+': sense = 1; break; | |
1799 | case '-': sense = 0; break; | |
1800 | default: | |
3cdc3f3a | 1801 | for (t = tt; t->ch; t++) { |
1802 | if (t->ch == *p) { | |
1803 | if (sense) f |= t->f; | |
1804 | else f &= ~t->f; | |
410c8acf | 1805 | goto tropt_ok; |
1806 | } | |
1807 | } | |
f43df819 | 1808 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1809 | return (0); |
e04c2d50 | 1810 | tropt_ok:; |
410c8acf | 1811 | break; |
1812 | } | |
1813 | p++; | |
1814 | } | |
3cdc3f3a | 1815 | *ff = f; |
1816 | ch = 1; | |
410c8acf | 1817 | } |
3cdc3f3a | 1818 | a_ok(a); |
1819 | return (ch); | |
1820 | } | |
1821 | ||
1822 | #ifndef NTRACE | |
1823 | ||
1824 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1825 | { | |
1826 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1827 | trace_level(tr_flags); | |
410c8acf | 1828 | } |
1829 | ||
1830 | #endif | |
1831 | ||
3cdc3f3a | 1832 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1833 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1834 | |
3cdc3f3a | 1835 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1836 | const char *status, char *av[]) |
1837 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1838 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1839 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1840 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1841 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1842 | |
410c8acf | 1843 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
5d06f63e MW |
1844 | { |
1845 | int i; | |
1846 | ||
1847 | if (ac) { | |
1848 | for (i = 0; i < NADDRFAM; i++) | |
1849 | if (mystrieq(av[0], aftab[i].name)) goto found; | |
1850 | a_fail(a, "unknown-address-family", "%s", av[0], A_END); | |
1851 | return; | |
1852 | found: | |
063c9648 | 1853 | if (udpsock[i].sf.fd < 0) { |
971e5689 MW |
1854 | a_fail(a, "disabled-address-family", "%s", aftab[i].name, A_END); |
1855 | return; | |
1856 | } | |
5d06f63e MW |
1857 | } else { |
1858 | for (i = 0; i < NADDRFAM; i++) | |
063c9648 | 1859 | if (udpsock[i].sf.fd >= 0) goto found; |
5d06f63e MW |
1860 | abort(); |
1861 | } | |
8d4c29d2 | 1862 | a_info(a, "%u", udpsock[i].port, A_END); |
5d06f63e MW |
1863 | a_ok(a); |
1864 | } | |
410c8acf | 1865 | |
410c8acf | 1866 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1867 | { | |
1868 | if (flags & F_DAEMON) | |
f43df819 | 1869 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1870 | else { |
f43df819 | 1871 | a_notify("DAEMON", A_END); |
93bee2c4 | 1872 | if (a_stdin) |
410c8acf | 1873 | a_destroy(a_stdin); |
19dd2531 | 1874 | if (daemonize()) |
f43df819 | 1875 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1876 | else { |
410c8acf | 1877 | flags |= F_DAEMON; |
3cdc3f3a | 1878 | a_ok(a); |
93bee2c4 | 1879 | } |
410c8acf | 1880 | } |
1881 | } | |
1882 | ||
ff92ffd3 MW |
1883 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1884 | { | |
1885 | admin_bgop *bg; | |
1886 | ||
1887 | for (bg = a->bg; bg; bg = bg->next) { | |
1888 | assert(bg->tag); | |
1889 | a_info(a, "%s", bg->tag, A_END); | |
1890 | } | |
1891 | a_ok(a); | |
1892 | } | |
1893 | ||
1894 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1895 | { | |
1896 | admin_bgop *bg; | |
1897 | ||
1898 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1899 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1900 | else { | |
1901 | bg->cancel(bg); | |
1902 | a_bgrelease(bg); | |
1903 | a_ok(a); | |
1904 | } | |
1905 | } | |
1906 | ||
449991a3 MW |
1907 | static void acmd_algs(admin *a, unsigned ac, char *av[]) |
1908 | { | |
35c8b547 MW |
1909 | peer *p; |
1910 | const kdata *kd; | |
5b9f3d37 | 1911 | const dhgrp *g; |
35c8b547 MW |
1912 | const algswitch *algs; |
1913 | ||
1914 | if (!ac) | |
1915 | kd = master; | |
1916 | else { | |
1917 | if ((p = a_findpeer(a, av[0])) == 0) return; | |
1918 | kd = p->kx.kpriv; | |
1919 | } | |
5b9f3d37 | 1920 | g = kd->grp; |
35c8b547 MW |
1921 | algs = &kd->algs; |
1922 | ||
5b9f3d37 | 1923 | g->ops->grpinfo(g, a); |
449991a3 | 1924 | a_info(a, |
35c8b547 MW |
1925 | "hash=%s", algs->h->name, |
1926 | "mgf=%s", algs->mgf->name, | |
1927 | "hash-sz=%lu", (unsigned long)algs->h->hashsz, | |
449991a3 MW |
1928 | A_END); |
1929 | a_info(a, | |
c70a7c5c MW |
1930 | "bulk-transform=%s", algs->bulk->ops->name, |
1931 | "bulk-overhead=%lu", | |
1932 | (unsigned long)algs->bulk->ops->overhead(algs->bulk), | |
449991a3 | 1933 | A_END); |
c70a7c5c | 1934 | algs->bulk->ops->alginfo(algs->bulk, a); |
449991a3 | 1935 | a_info(a, |
c70a7c5c MW |
1936 | "cipher-data-limit=%lu", |
1937 | (unsigned long)algs->bulk->ops->expsz(algs->bulk), | |
449991a3 | 1938 | A_END); |
449991a3 MW |
1939 | a_ok(a); |
1940 | } | |
1941 | ||
410c8acf | 1942 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1943 | { | |
c8e02c8a | 1944 | FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); }); |
3cdc3f3a | 1945 | a_ok(a); |
410c8acf | 1946 | } |
1947 | ||
1948 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1949 | { | |
1950 | peer *p; | |
1951 | ||
37941236 | 1952 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1953 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1954 | a_ok(a); |
1955 | } | |
410c8acf | 1956 | } |
1957 | ||
64cf2223 MW |
1958 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1959 | { | |
1960 | peer *p; | |
1961 | ||
1962 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1963 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1964 | p_setifname(p, av[1]); | |
1965 | a_ok(a); | |
e04c2d50 | 1966 | } |
64cf2223 MW |
1967 | } |
1968 | ||
37941236 | 1969 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1970 | { | |
1971 | buf b; | |
1972 | ||
1973 | buf_init(&b, buf_i, PKBUFSZ); | |
3deadf73 | 1974 | c_new(0, 0, &b); |
f43df819 | 1975 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1976 | a_ok(a); |
1977 | } | |
1978 | ||
1979 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1980 | { | |
37d4c59e MW |
1981 | codec *b64 = base64_class.decoder(CDCF_NOEQPAD); |
1982 | int err; | |
37941236 | 1983 | buf b; |
1984 | dstr d = DSTR_INIT; | |
1985 | ||
37d4c59e MW |
1986 | if ((err = b64->ops->code(b64, av[0], strlen(av[0]), &d)) != 0 || |
1987 | (err = b64->ops->code(b64, 0, 0, &d)) != 0) | |
1988 | a_fail(a, "bad-base64", "%s", codec_strerror(err), A_END); | |
1989 | else { | |
1990 | buf_init(&b, d.buf, d.len); | |
3deadf73 | 1991 | if (c_check(0, 0, &b) || BBAD(&b) || BLEFT(&b)) |
37d4c59e MW |
1992 | a_fail(a, "invalid-challenge", A_END); |
1993 | else | |
1994 | a_ok(a); | |
1995 | } | |
1996 | b64->ops->destroy(b64); | |
37941236 | 1997 | dstr_destroy(&d); |
1998 | } | |
1999 | ||
2000 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
2001 | { | |
2002 | peer *p; | |
37d4c59e MW |
2003 | int err; |
2004 | codec *b64; | |
37941236 | 2005 | dstr d = DSTR_INIT; |
2006 | ||
37d4c59e MW |
2007 | if ((p = a_findpeer(a, av[0])) == 0) return; |
2008 | b64 = base64_class.decoder(CDCF_NOEQPAD); | |
2009 | if ((err = b64->ops->code(b64, av[1], strlen(av[1]), &d)) != 0 || | |
2010 | (err = b64->ops->code(b64, 0, 0, &d)) != 0) | |
2011 | a_fail(a, "bad-base64", "%s", codec_strerror(err), A_END); | |
2012 | else { | |
37941236 | 2013 | p_greet(p, d.buf, d.len); |
37941236 | 2014 | a_ok(a); |
2015 | } | |
37d4c59e MW |
2016 | b64->ops->destroy(b64); |
2017 | dstr_destroy(&d); | |
37941236 | 2018 | } |
2019 | ||
410c8acf | 2020 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
2021 | { | |
2022 | peer *p; | |
2023 | const addr *ad; | |
2024 | ||
37941236 | 2025 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 2026 | ad = p_addr(p); |
f43df819 | 2027 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 2028 | a_ok(a); |
410c8acf | 2029 | } |
2030 | } | |
2031 | ||
060ca767 | 2032 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
2033 | { | |
2034 | peer *p; | |
2035 | const peerspec *ps; | |
f3c6d21c | 2036 | const char *ptag; |
060ca767 | 2037 | |
37941236 | 2038 | if ((p = a_findpeer(a, av[0])) != 0) { |
2039 | ps = p_spec(p); | |
f43df819 | 2040 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
8362ac1c | 2041 | if (ps->knock) a_info(a, "knock=%s", ps->knock, A_END); |
fe2a5dcf MW |
2042 | a_info(a, "key=%s", p_tag(p), |
2043 | "current-key=%s", p->kx.kpub->tag, A_END); | |
f3c6d21c MW |
2044 | if ((ptag = p_privtag(p)) == 0) ptag = "(default)"; |
2045 | a_info(a, "private-key=%s", ptag, | |
fe2a5dcf | 2046 | "current-private-key=%s", p->kx.kpriv->tag, A_END); |
f43df819 | 2047 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); |
bd322830 MW |
2048 | a_info(a, "corked=%s", BOOL(p->kx.f&KXF_CORK), |
2049 | "mobile=%s", BOOL(ps->f&PSF_MOBILE), | |
067aa5f0 | 2050 | "ephemeral=%s", BOOL(ps->f&PSF_EPHEM), |
bd322830 | 2051 | A_END); |
37941236 | 2052 | a_ok(a); |
060ca767 | 2053 | } |
060ca767 | 2054 | } |
2055 | ||
2056 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
2057 | { | |
f43df819 MW |
2058 | a_info(a, "implementation=edgeware-tripe", A_END); |
2059 | a_info(a, "version=%s", VERSION, A_END); | |
2060 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 2061 | a_ok(a); |
2062 | } | |
2063 | ||
c7053da9 | 2064 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
2065 | { | |
2066 | peer *p; | |
2067 | stats *st; | |
2068 | ||
37941236 | 2069 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 2070 | return; |
060ca767 | 2071 | |
2072 | st = p_stats(p); | |
f43df819 MW |
2073 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
2074 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
2075 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
2076 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
2077 | a_info(a, | |
2078 | "packets-out=%lu", st->n_out, | |
2079 | "bytes-out=%lu", st->sz_out, | |
2080 | A_END); | |
2081 | a_info(a, | |
2082 | "keyexch-packets-in=%lu", st->n_kxin, | |
2083 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
2084 | A_END); | |
2085 | a_info(a, | |
2086 | "keyexch-packets-out=%lu", st->n_kxout, | |
2087 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
2088 | A_END); | |
2089 | a_info(a, | |
2090 | "ip-packets-in=%lu", st->n_ipin, | |
2091 | "ip-bytes-in=%lu", st->sz_ipin, | |
2092 | A_END); | |
2093 | a_info(a, | |
e04c2d50 | 2094 | "ip-packets-out=%lu", st->n_ipout, |
18ad8913 MW |
2095 | "ip-bytes-out=%lu", st->sz_ipout, |
2096 | A_END); | |
f43df819 | 2097 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 2098 | a_ok(a); |
c7053da9 | 2099 | } |
2100 | ||
410c8acf | 2101 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
2102 | { | |
2103 | peer *p; | |
f98df549 | 2104 | |
37941236 | 2105 | if ((p = a_findpeer(a, av[0])) != 0) { |
067aa5f0 | 2106 | p_destroy(p, 1); |
3cdc3f3a | 2107 | a_ok(a); |
410c8acf | 2108 | } |
2109 | } | |
2110 | ||
0ba8de86 | 2111 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
2112 | { | |
2113 | peer *p; | |
f98df549 | 2114 | |
37941236 | 2115 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 2116 | kx_start(&p->kx, 1); |
0ba8de86 | 2117 | a_ok(a); |
2118 | } | |
2119 | } | |
2120 | ||
de014da6 | 2121 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
2122 | { p_keyreload(); a_ok(a); } | |
2123 | ||
410c8acf | 2124 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
2125 | { | |
f43df819 | 2126 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 2127 | a_ok(a); |
2173bd49 | 2128 | lp_end(); |
410c8acf | 2129 | } |
2130 | ||
3cdc3f3a | 2131 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
2132 | { | |
f43df819 | 2133 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 2134 | a_ok(a); |
2135 | } | |
2136 | ||
42da2a58 | 2137 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
2138 | { | |
24898e7e | 2139 | FOREACH_TUN(tops, { a_info(a, "%s", tops->name, A_END); }); |
42da2a58 | 2140 | a_ok(a); |
2141 | } | |
2142 | ||
410c8acf | 2143 | /* --- The command table and help --- */ |
2144 | ||
2145 | typedef struct acmd { | |
2146 | const char *name; | |
2147 | const char *help; | |
2148 | unsigned argmin, argmax; | |
2149 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
2150 | } acmd; | |
2151 | ||
2152 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
2153 | ||
2154 | static const acmd acmdtab[] = { | |
9986f0b5 | 2155 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 2156 | { "addr", "PEER", 1, 1, acmd_addr }, |
35c8b547 | 2157 | { "algs", "[PEER]", 0, 1, acmd_algs }, |
ff92ffd3 | 2158 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
2159 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
2160 | { "daemon", 0, 0, 0, acmd_daemon }, | |
2161 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
2162 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
2163 | { "getchal", 0, 0, 0, acmd_getchal }, | |
2164 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
2165 | { "help", 0, 0, 0, acmd_help }, | |
2166 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 2167 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
2168 | { "kill", "PEER", 1, 1, acmd_kill }, |
2169 | { "list", 0, 0, 0, acmd_list }, | |
2170 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
2171 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
2172 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
5d06f63e | 2173 | { "port", "[FAMILY]", 0, 1, acmd_port }, |
f43df819 MW |
2174 | { "quit", 0, 0, 0, acmd_quit }, |
2175 | { "reload", 0, 0, 0, acmd_reload }, | |
2176 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 2177 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
405fc4da | 2178 | { "stats", "PEER", 1, 1, acmd_stats }, |
be6a1b7a MW |
2179 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
2180 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
2181 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
2182 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 2183 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 2184 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
2185 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
2186 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
2187 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
2188 | 2, 0xffff, acmd_svcsubmit }, | |
de014da6 | 2189 | #ifndef NTRACE |
f43df819 | 2190 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 2191 | #endif |
f43df819 MW |
2192 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
2193 | { "version", 0, 0, 0, acmd_version }, | |
2194 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
e04c2d50 | 2195 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, |
410c8acf | 2196 | { 0, 0, 0, 0, 0 } |
2197 | }; | |
2198 | ||
2199 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
2200 | { | |
2201 | const acmd *c; | |
f98df549 | 2202 | |
f43df819 MW |
2203 | for (c = acmdtab; c->name; c++) { |
2204 | if (c->help) | |
2205 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
e04c2d50 | 2206 | else |
f43df819 MW |
2207 | a_info(a, "%s", c->name, A_END); |
2208 | } | |
3cdc3f3a | 2209 | a_ok(a); |
410c8acf | 2210 | } |
2211 | ||
2212 | /*----- Connection handling -----------------------------------------------*/ | |
2213 | ||
c511e1f9 | 2214 | /* --- @a_destroypending@ --- * |
410c8acf | 2215 | * |
c511e1f9 | 2216 | * Arguments: --- |
fd3cf232 | 2217 | * |
2218 | * Returns: --- | |
2219 | * | |
c511e1f9 | 2220 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 2221 | */ |
2222 | ||
c511e1f9 | 2223 | static void a_destroypending(void) |
410c8acf | 2224 | { |
94593d1b | 2225 | admin *a, *aa, *head; |
de014da6 | 2226 | admin_bgop *bg, *bbg; |
be6a1b7a | 2227 | admin_service *svc, *ssvc; |
de014da6 | 2228 | |
94593d1b MW |
2229 | /* --- Destroy connections marked as pending --- * |
2230 | * | |
2231 | * Slightly messy. Killing clients may cause others to finally die. Make | |
2232 | * sure that they can be put on the list without clobbering anything or | |
2233 | * getting lost. | |
2234 | */ | |
fd3cf232 | 2235 | |
94593d1b MW |
2236 | while (a_dead) { |
2237 | head = a_dead; | |
2238 | a_dead = 0; | |
2239 | for (a = head; a; a = aa) { | |
2240 | aa = a->next; | |
2241 | assert(a->f & AF_DEAD); | |
c511e1f9 | 2242 | |
94593d1b | 2243 | /* --- Report what we're doing --- */ |
c511e1f9 | 2244 | |
94593d1b MW |
2245 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
2246 | a->seq); ) | |
c511e1f9 | 2247 | |
94593d1b | 2248 | /* --- If this is the foreground client then shut down --- */ |
46dde080 | 2249 | |
94593d1b MW |
2250 | if (a->f & AF_FOREGROUND) { |
2251 | T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); ) | |
2252 | a_warn("SERVER", "quit", "foreground-eof", A_END); | |
2173bd49 | 2253 | lp_end(); |
94593d1b | 2254 | } |
46dde080 | 2255 | |
94593d1b | 2256 | /* --- Abort any background jobs in progress --- */ |
c511e1f9 | 2257 | |
94593d1b MW |
2258 | for (bg = a->bg; bg; bg = bbg) { |
2259 | bbg = bg->next; | |
2260 | bg->cancel(bg); | |
2261 | if (bg->tag) xfree(bg->tag); | |
2262 | xfree(bg); | |
2263 | } | |
c511e1f9 | 2264 | |
94593d1b | 2265 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a | 2266 | |
94593d1b MW |
2267 | for (svc = a->svcs; svc; svc = ssvc) { |
2268 | ssvc = svc->next; | |
2269 | a_svcrelease(svc); | |
2270 | } | |
2271 | a_jobtablefinal(&a->j); | |
be6a1b7a | 2272 | |
94593d1b | 2273 | /* --- Close file descriptors and selectory --- */ |
c511e1f9 | 2274 | |
94593d1b MW |
2275 | selbuf_destroy(&a->b); |
2276 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
2277 | close(a->w.fd); | |
2278 | if (a_stdin == a) a_stdin = 0; | |
c511e1f9 | 2279 | |
94593d1b | 2280 | /* --- Done --- */ |
c511e1f9 | 2281 | |
94593d1b MW |
2282 | DESTROY(a); |
2283 | } | |
410c8acf | 2284 | } |
060ca767 | 2285 | } |
2286 | ||
fd3cf232 | 2287 | /* --- @a_destroy@ --- * |
2288 | * | |
2289 | * Arguments: @admin *a@ = pointer to an admin block | |
2290 | * | |
2291 | * Returns: --- | |
2292 | * | |
2293 | * Use: Destroys an admin block. This requires a certain amount of | |
2294 | * care. | |
2295 | */ | |
2296 | ||
de014da6 | 2297 | static void freequeue(oqueue *q) |
2298 | { | |
2299 | obuf *o, *oo; | |
2300 | ||
2301 | for (o = q->hd; o; o = oo) { | |
2302 | oo = o->next; | |
2303 | xfree(o); | |
2304 | } | |
2305 | q->hd = q->tl = 0; | |
2306 | } | |
2307 | ||
fd3cf232 | 2308 | static void a_destroy(admin *a) |
2309 | { | |
fd3cf232 | 2310 | if (a->f & AF_DEAD) |
2311 | return; | |
2312 | ||
c511e1f9 MW |
2313 | if (a->next) a->next->prev = a->prev; |
2314 | if (a->prev) a->prev->next = a->next; | |
2315 | else admins = a->next; | |
fd3cf232 | 2316 | |
c511e1f9 | 2317 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 2318 | freequeue(&a->out); |
fd3cf232 | 2319 | |
c511e1f9 MW |
2320 | a->f |= AF_DEAD; |
2321 | a->next = a_dead; | |
2322 | a_dead = a; | |
fd3cf232 | 2323 | |
c511e1f9 | 2324 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2325 | } |
2326 | ||
410c8acf | 2327 | /* --- @a_line@ --- * |
2328 | * | |
2329 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2330 | * @size_t len@ = length of the line |
410c8acf | 2331 | * @void *vp@ = pointer to my admin block |
2332 | * | |
2333 | * Returns: --- | |
2334 | * | |
2335 | * Use: Handles a line of input. | |
2336 | */ | |
2337 | ||
3008eabf | 2338 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2339 | { |
2340 | admin *a = vp; | |
2341 | const acmd *c; | |
6f88042a | 2342 | char *av[16 + 1]; |
410c8acf | 2343 | size_t ac; |
2344 | ||
f4c9c08f | 2345 | QUICKRAND; |
fd3cf232 | 2346 | if (a->f & AF_DEAD) |
2347 | return; | |
410c8acf | 2348 | if (!p) { |
de014da6 | 2349 | if (!a->bg) |
2350 | a_destroy(a); | |
2351 | else { | |
2352 | a->f |= AF_CLOSE; | |
2353 | selbuf_disable(&a->b); | |
2354 | } | |
410c8acf | 2355 | return; |
2356 | } | |
6f88042a | 2357 | ac = str_qsplit(p, av, N(av) - 1, 0, STRF_QUOTE); |
410c8acf | 2358 | if (!ac) |
2359 | return; | |
6f88042a | 2360 | av[ac] = 0; |
410c8acf | 2361 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2362 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2363 | ac--; |
f43df819 MW |
2364 | if (c->argmin > ac || ac > c->argmax) { |
2365 | if (!c->help) | |
2366 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
e04c2d50 | 2367 | else |
f43df819 | 2368 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); |
c511e1f9 | 2369 | } else |
410c8acf | 2370 | c->func(a, ac, av + 1); |
2371 | return; | |
2372 | } | |
2373 | } | |
f43df819 | 2374 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2375 | } |
2376 | ||
2377 | /* --- @a_create@ --- * | |
2378 | * | |
2379 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2380 | * @unsigned f@ = initial flags to set |
410c8acf | 2381 | * |
2382 | * Returns: --- | |
2383 | * | |
f88b41d6 | 2384 | * Use: Creates a new admin connection. It's safe to call this |
7737eb87 MW |
2385 | * before @a_init@ -- and, indeed, this makes sense if you also |
2386 | * call @a_switcherr@ to report initialization errors through | |
2387 | * the administration machinery. | |
410c8acf | 2388 | */ |
2389 | ||
3cdc3f3a | 2390 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2391 | { |
2392 | admin *a = CREATE(admin); | |
3cdc3f3a | 2393 | |
93bee2c4 | 2394 | T( static unsigned seq = 0; |
2395 | a->seq = seq++; ) | |
410c8acf | 2396 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2397 | a->bg = 0; |
042d5c20 | 2398 | a->ref = 0; |
be6a1b7a | 2399 | a->svcs = 0; |
5d46c0f8 | 2400 | a_jobtableinit(&a->j); |
3cdc3f3a | 2401 | a->f = f; |
de014da6 | 2402 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2403 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2404 | if (fd_out != fd_in) |
fd3cf232 | 2405 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2406 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2407 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2408 | a->out.hd = a->out.tl = 0; |
410c8acf | 2409 | a->next = admins; |
2410 | a->prev = 0; | |
de014da6 | 2411 | if (admins) admins->prev = a; |
410c8acf | 2412 | admins = a; |
2413 | } | |
2414 | ||
2415 | /* --- @a_accept@ --- * | |
2416 | * | |
2417 | * Arguments: @int fd@ = file descriptor to accept | |
2418 | * @unsigned mode@ = what to do | |
2419 | * @void *v@ = uninteresting pointer | |
2420 | * | |
2421 | * Returns: --- | |
2422 | * | |
2423 | * Use: Accepts a new admin connection. | |
2424 | */ | |
2425 | ||
2426 | static void a_accept(int fd, unsigned mode, void *v) | |
2427 | { | |
2428 | int nfd; | |
2429 | struct sockaddr_un sun; | |
cb160b86 | 2430 | socklen_t sz = sizeof(sun); |
410c8acf | 2431 | |
2432 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2433 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2434 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2435 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2436 | return; |
2437 | } | |
3cdc3f3a | 2438 | a_create(nfd, nfd, 0); |
410c8acf | 2439 | } |
2440 | ||
c511e1f9 MW |
2441 | /* --- @a_preselect@ --- * |
2442 | * | |
2443 | * Arguments: --- | |
2444 | * | |
2445 | * Returns: --- | |
2446 | * | |
2447 | * Use: Informs the admin module that we're about to select again, | |
2448 | * and that it should do cleanup things it has delayed until a | |
2449 | * `safe' time. | |
2450 | */ | |
2451 | ||
2452 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2453 | ||
410c8acf | 2454 | /* --- @a_daemon@ --- * |
2455 | * | |
2456 | * Arguments: --- | |
2457 | * | |
2458 | * Returns: --- | |
2459 | * | |
2460 | * Use: Informs the admin module that it's a daemon. | |
2461 | */ | |
2462 | ||
f98df549 | 2463 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2464 | |
7737eb87 | 2465 | /* --- @a_listen@ --- * |
410c8acf | 2466 | * |
2467 | * Arguments: @const char *name@ = socket name to create | |
aa2405e8 MW |
2468 | * @uid_t u@ = user to own the socket |
2469 | * @gid_t g@ = group to own the socket | |
a9279e37 | 2470 | * @mode_t m@ = permissions to set on the socket |
410c8acf | 2471 | * |
9d966eb7 | 2472 | * Returns: Zero on success, @-1@ on failure. |
410c8acf | 2473 | * |
2474 | * Use: Creates the admin listening socket. | |
2475 | */ | |
2476 | ||
9d966eb7 | 2477 | int a_listen(const char *name, uid_t u, gid_t g, mode_t m) |
410c8acf | 2478 | { |
2479 | int fd; | |
2480 | int n = 5; | |
2481 | struct sockaddr_un sun; | |
410c8acf | 2482 | size_t sz; |
879483d7 | 2483 | mode_t omask; |
be6a1b7a | 2484 | |
410c8acf | 2485 | /* --- Set up the socket address --- */ |
2486 | ||
2487 | sz = strlen(name) + 1; | |
5ae728a6 MW |
2488 | if (sz > sizeof(sun.sun_path)) { |
2489 | a_warn("ADMIN", "admin-socket", "%s", name, "name-too-long", A_END); | |
9d966eb7 | 2490 | goto fail_0; |
5ae728a6 | 2491 | } |
410c8acf | 2492 | BURN(sun); |
2493 | sun.sun_family = AF_UNIX; | |
2494 | memcpy(sun.sun_path, name, sz); | |
2495 | sz += offsetof(struct sockaddr_un, sun_path); | |
2496 | ||
2497 | /* --- Attempt to bind to the socket --- */ | |
2498 | ||
879483d7 | 2499 | omask = umask(0077); |
410c8acf | 2500 | again: |
5ae728a6 MW |
2501 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) { |
2502 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, | |
2503 | "create-failed", "?ERRNO", A_END); | |
9d966eb7 | 2504 | goto fail_1; |
5ae728a6 | 2505 | } |
410c8acf | 2506 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { |
2507 | struct stat st; | |
2508 | int e = errno; | |
2509 | if (errno != EADDRINUSE) { | |
5ae728a6 MW |
2510 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, |
2511 | "bind-failed", "?ERRNO", A_END); | |
9d966eb7 | 2512 | goto fail_2; |
5ae728a6 MW |
2513 | } |
2514 | if (!n) { | |
2515 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, | |
2516 | "too-many-retries", A_END); | |
9d966eb7 | 2517 | goto fail_2; |
410c8acf | 2518 | } |
410c8acf | 2519 | n--; |
2520 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
5ae728a6 MW |
2521 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, |
2522 | "already-in-use", A_END); | |
9d966eb7 | 2523 | goto fail_2; |
5ae728a6 MW |
2524 | } |
2525 | if (errno != ECONNREFUSED) { | |
2526 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, | |
2527 | "bind-failed", "?ERR", e, A_END); | |
9d966eb7 | 2528 | goto fail_2; |
410c8acf | 2529 | } |
410c8acf | 2530 | if (stat(sun.sun_path, &st)) { |
7487f347 | 2531 | if (errno == ENOENT) { close(fd); goto again; } |
5ae728a6 MW |
2532 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, |
2533 | "stat-failed", "?ERRNO", A_END); | |
9d966eb7 | 2534 | goto fail_2; |
5ae728a6 MW |
2535 | } |
2536 | if (!S_ISSOCK(st.st_mode)) { | |
2537 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, | |
2538 | "not-a-socket", A_END); | |
9d966eb7 | 2539 | goto fail_2; |
410c8acf | 2540 | } |
c7053da9 | 2541 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2542 | unlink(sun.sun_path); |
2543 | close(fd); | |
2544 | goto again; | |
2545 | } | |
aa2405e8 | 2546 | if (chown(sun.sun_path, u, g)) { |
5ae728a6 MW |
2547 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, |
2548 | "chown-failed", "?ERRNO", A_END); | |
9d966eb7 | 2549 | goto fail_3; |
aa2405e8 | 2550 | } |
a9279e37 | 2551 | if (chmod(sun.sun_path, m)) { |
5ae728a6 MW |
2552 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, |
2553 | "chmod-failed", "?ERRNO", A_END); | |
9d966eb7 | 2554 | goto fail_3; |
a9279e37 | 2555 | } |
410c8acf | 2556 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
5ae728a6 MW |
2557 | if (listen(fd, 5)) { |
2558 | a_warn("ADMIN", "admin-socket", "%s", sun.sun_path, | |
2559 | "listen-failed", "?ERRNO", A_END); | |
9d966eb7 | 2560 | goto fail_3; |
5ae728a6 | 2561 | } |
9d966eb7 | 2562 | umask(omask); |
410c8acf | 2563 | |
2564 | /* --- Listen to the socket --- */ | |
2565 | ||
2566 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2567 | sel_addfile(&sock); | |
2568 | sockname = name; | |
9d966eb7 MW |
2569 | |
2570 | return (0); | |
2571 | ||
2572 | /* --- Clean up if things go sideways --- */ | |
2573 | ||
2574 | fail_3: | |
2575 | unlink(sun.sun_path); | |
2576 | fail_2: | |
2577 | close(fd); | |
2578 | fail_1: | |
2579 | umask(omask); | |
2580 | fail_0: | |
2581 | return (-1); | |
7737eb87 MW |
2582 | } |
2583 | ||
11586be2 MW |
2584 | /* --- @a_unlisten@ --- * |
2585 | * | |
2586 | * Arguments: --- | |
2587 | * | |
2588 | * Returns: --- | |
2589 | * | |
2590 | * Use: Stops listening to the administration socket and removes it. | |
2591 | */ | |
2592 | ||
2593 | void a_unlisten(void) | |
2594 | { | |
2595 | if (!sockname) return; | |
2596 | sel_rmfile(&sock); | |
2597 | unlink(sockname); | |
2598 | close(sock.fd); | |
2599 | } | |
2600 | ||
7737eb87 MW |
2601 | /* --- @a_switcherr@ --- * |
2602 | * | |
2603 | * Arguments: --- | |
2604 | * | |
2605 | * Returns: --- | |
2606 | * | |
2607 | * Use: Arrange to report warnings, trace messages, etc. to | |
2608 | * administration clients rather than the standard-error stream. | |
2609 | * | |
2610 | * Obviously this makes no sense unless there is at least one | |
2611 | * client established. Calling @a_listen@ won't help with this, | |
2612 | * because the earliest a new client can connect is during the | |
2613 | * first select-loop iteration, which is too late: some initial | |
2614 | * client must have been added manually using @a_create@. | |
2615 | */ | |
2616 | ||
2617 | void a_switcherr(void) | |
2618 | { | |
2619 | T( trace_custom(a_trace, 0); | |
2620 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2621 | flags |= F_INIT; | |
2622 | } | |
2623 | ||
2624 | /* --- @a_signals@ --- * | |
2625 | * | |
2626 | * Arguments: --- | |
2627 | * | |
2628 | * Returns: --- | |
2629 | * | |
2630 | * Use: Establishes handlers for the obvious signals. | |
2631 | */ | |
2632 | ||
2633 | void a_signals(void) | |
2634 | { | |
2635 | struct sigaction sa; | |
2636 | ||
2637 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2638 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
2639 | sigaction(SIGINT, 0, &sa); | |
2640 | if (sa.sa_handler != SIG_IGN) | |
2641 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2642 | } | |
2643 | ||
2644 | /* --- @a_init@ --- * | |
2645 | * | |
2646 | * Arguments: --- | |
2647 | * | |
9d966eb7 | 2648 | * Returns: Zero on success, @-1@ on failure. |
7737eb87 MW |
2649 | * |
2650 | * Use: Creates the admin listening socket. | |
2651 | */ | |
2652 | ||
9d966eb7 | 2653 | int a_init(void) |
7737eb87 MW |
2654 | { |
2655 | #ifdef HAVE_LIBADNS | |
2656 | int err; | |
2657 | #endif | |
2658 | ||
7737eb87 MW |
2659 | /* --- Prepare the background name resolver --- */ |
2660 | ||
971e5689 MW |
2661 | #ifdef HAVE_LIBADNS |
2662 | if ((err = adns_init(&ads, | |
2663 | (adns_if_permit_ipv4 | adns_if_permit_ipv6 | | |
2664 | adns_if_noserverwarn | adns_if_nosigpipe | | |
2665 | adns_if_noautosys), | |
5ae728a6 MW |
2666 | 0)) != 0) { |
2667 | a_warn("ADMIN", "adns-init-failed", "?ERRNO", A_END); | |
9d966eb7 | 2668 | return (-1); |
5ae728a6 | 2669 | } |
971e5689 MW |
2670 | sel_addhook(&sel, &hook, before_select, after_select, 0); |
2671 | #else | |
410c8acf | 2672 | bres_init(&sel); |
971e5689 | 2673 | #endif |
9d966eb7 MW |
2674 | |
2675 | /* --- Create services table --- */ | |
2676 | ||
2677 | sym_create(&a_svcs); | |
2678 | ||
2679 | /* --- All done --- */ | |
2680 | ||
2681 | return (0); | |
410c8acf | 2682 | } |
2683 | ||
2684 | /*----- That's all, folks -------------------------------------------------*/ |