Commit | Line | Data |
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410c8acf | 1 | /* -*-c-*- |
2 | * | |
410c8acf | 3 | * Admin interface for configuration |
4 | * | |
5 | * (c) 2001 Straylight/Edgeware | |
6 | */ | |
7 | ||
e04c2d50 | 8 | /*----- Licensing notice --------------------------------------------------* |
410c8acf | 9 | * |
10 | * This file is part of Trivial IP Encryption (TrIPE). | |
11 | * | |
12 | * TrIPE is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
e04c2d50 | 16 | * |
410c8acf | 17 | * TrIPE is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
e04c2d50 | 21 | * |
410c8acf | 22 | * You should have received a copy of the GNU General Public License |
23 | * along with TrIPE; if not, write to the Free Software Foundation, | |
24 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
25 | */ | |
26 | ||
410c8acf | 27 | /*----- Header files ------------------------------------------------------*/ |
28 | ||
29 | #include "tripe.h" | |
30 | ||
31 | /*----- Global variables --------------------------------------------------*/ | |
32 | ||
33 | #ifndef NTRACE | |
34 | ||
35 | const trace_opt tr_opts[] = { | |
36 | { 't', T_TUNNEL, "tunnel events" }, | |
37 | { 'r', T_PEER, "peer events" }, | |
38 | { 'a', T_ADMIN, "admin interface" }, | |
410c8acf | 39 | { 's', T_KEYSET, "symmetric keyset management" }, |
40 | { 'x', T_KEYEXCH, "key exchange" }, | |
41 | { 'm', T_KEYMGMT, "key management" }, | |
37941236 | 42 | { 'l', T_CHAL, "challenge management" }, |
388e0319 | 43 | { 'v', T_PRIVSEP, "privilege separation" }, |
37941236 | 44 | { 'p', T_PACKET, "packet contents" }, |
45 | { 'c', T_CRYPTO, "crypto details" }, | |
410c8acf | 46 | { 'A', T_ALL, "all of the above" }, |
47 | { 0, 0, 0 } | |
48 | }; | |
49 | ||
50 | unsigned tr_flags = 0; | |
51 | #endif | |
52 | ||
3cdc3f3a | 53 | static const trace_opt w_opts[] = { |
8ed35e02 | 54 | #ifndef NTRACE |
3cdc3f3a | 55 | { 't', AF_TRACE, "trace messages" }, |
8ed35e02 | 56 | #endif |
3cdc3f3a | 57 | { 'n', AF_NOTE, "asynchronous notifications" }, |
58 | { 'w', AF_WARN, "warnings" }, | |
59 | { 'A', AF_ALLMSGS, "all of the above" }, | |
60 | { 0, 0, 0 } | |
61 | }; | |
62 | ||
410c8acf | 63 | /*----- Static variables --------------------------------------------------*/ |
64 | ||
65 | static admin *admins; | |
c511e1f9 | 66 | static admin *a_dead; |
410c8acf | 67 | static sel_file sock; |
68 | static const char *sockname; | |
be6a1b7a | 69 | static sym_table a_svcs; |
410c8acf | 70 | static unsigned flags = 0; |
71 | static admin *a_stdin = 0; | |
72 | static sig s_term, s_int, s_hup; | |
73 | ||
74 | #define F_DAEMON 1u | |
75 | #define F_INIT 2u | |
46dde080 | 76 | #define F_FOREGROUND 4u |
410c8acf | 77 | |
78 | #define T_RESOLVE SEC(30) | |
0ba8de86 | 79 | #define T_PING SEC(5) |
410c8acf | 80 | |
fd3cf232 | 81 | static void a_destroy(admin */*a*/); |
fd3cf232 | 82 | |
060ca767 | 83 | #define BOOL(x) ((x) ? "t" : "nil") |
84 | ||
fd3cf232 | 85 | /*----- Output functions --------------------------------------------------*/ |
86 | ||
87 | /* --- @trywrite@ --- * | |
88 | * | |
89 | * Arguments: @admin *a@ = pointer to an admin block | |
90 | * @const char *p@ = pointer to buffer to write | |
91 | * @size_t sz@ = size of data to write | |
92 | * | |
93 | * Returns: The number of bytes written, or less than zero on error. | |
94 | * | |
95 | * Use: Attempts to write data to a client. | |
96 | */ | |
97 | ||
98 | static ssize_t trywrite(admin *a, const char *p, size_t sz) | |
99 | { | |
100 | ssize_t n, done = 0; | |
101 | ||
102 | again: | |
103 | if (!sz) | |
104 | return (done); | |
105 | n = write(a->w.fd, p, sz); | |
106 | if (n > 0) { | |
107 | done += n; | |
108 | p += n; | |
109 | sz -= n; | |
110 | goto again; | |
111 | } | |
112 | if (n < 0) { | |
113 | if (errno == EINTR) | |
114 | goto again; | |
115 | if (errno != EAGAIN && errno != EWOULDBLOCK) { | |
116 | a_destroy(a); | |
f43df819 | 117 | a_warn("ADMIN", "client-write-error", "?ERRNO", A_END); |
fd3cf232 | 118 | return (-1); |
119 | } | |
120 | } | |
121 | return (done); | |
122 | } | |
123 | ||
de014da6 | 124 | /* --- @doqueue@ -- * |
fd3cf232 | 125 | * |
de014da6 | 126 | * Arguments: @oqueue *q@ = pointer to output queue |
fd3cf232 | 127 | * @const char *p@ = pointer to buffer to write |
de014da6 | 128 | * @size_t sz@ = size of buffer |
fd3cf232 | 129 | * |
de014da6 | 130 | * Returns: Nonzero if the queue was previously empty. |
fd3cf232 | 131 | * |
de014da6 | 132 | * Use: Queues data to be written later. |
fd3cf232 | 133 | */ |
134 | ||
de014da6 | 135 | static int doqueue(oqueue *q, const char *p, size_t sz) |
fd3cf232 | 136 | { |
fd3cf232 | 137 | obuf *o; |
de014da6 | 138 | int rc = 0; |
139 | size_t n; | |
fd3cf232 | 140 | |
de014da6 | 141 | o = q->tl; |
fd3cf232 | 142 | if (!o) |
de014da6 | 143 | rc = 1; |
fd3cf232 | 144 | else if (o->p_in < o->buf + OBUFSZ) |
145 | goto noalloc; | |
146 | ||
147 | do { | |
148 | o = xmalloc(sizeof(obuf)); | |
149 | o->next = 0; | |
150 | o->p_in = o->p_out = o->buf; | |
de014da6 | 151 | if (q->tl) |
152 | q->tl->next = o; | |
fd3cf232 | 153 | else |
de014da6 | 154 | q->hd = o; |
155 | q->tl = o; | |
fd3cf232 | 156 | |
157 | noalloc: | |
158 | n = o->buf + OBUFSZ - o->p_in; | |
159 | if (n > sz) | |
160 | n = sz; | |
161 | memcpy(o->p_in, p, n); | |
162 | o->p_in += n; | |
163 | p += n; | |
164 | sz -= n; | |
165 | } while (sz); | |
de014da6 | 166 | |
167 | return (rc); | |
168 | } | |
169 | ||
170 | /* --- @dosend@ --- * | |
171 | * | |
172 | * Arguemnts: @admin *a@ = pointer to an admin block | |
173 | * @const char *p@ = pointer to buffer to write | |
174 | * @size_t sz@ = size of data to write | |
175 | * | |
176 | * Returns: --- | |
177 | * | |
178 | * Use: Sends data to an admin client. | |
179 | */ | |
180 | ||
181 | static void dosend(admin *a, const char *p, size_t sz) | |
182 | { | |
183 | ssize_t n; | |
184 | ||
185 | if (a->f & AF_DEAD) | |
186 | return; | |
187 | if (!a->out.hd) { | |
188 | if ((n = trywrite(a, p, sz)) < 0) | |
189 | return; | |
190 | p += n; | |
191 | sz -= n; | |
192 | if (!sz) | |
193 | return; | |
194 | } | |
195 | if (doqueue(&a->out, p, sz)) | |
196 | sel_addfile(&a->w); | |
fd3cf232 | 197 | } |
198 | ||
199 | /* --- @a_flush@ --- * | |
200 | * | |
201 | * Arguments: @int fd@ = file descriptor | |
202 | * @unsigned mode@ = what's happening | |
203 | * @void *v@ = pointer to my admin block | |
204 | * | |
205 | * Returns: --- | |
206 | * | |
207 | * Use: Flushes buffers when a client is ready to read again. | |
208 | */ | |
209 | ||
210 | static void a_flush(int fd, unsigned mode, void *v) | |
211 | { | |
212 | admin *a = v; | |
213 | obuf *o, *oo; | |
214 | ssize_t n; | |
215 | ||
de014da6 | 216 | o = a->out.hd; |
fd3cf232 | 217 | while (o) { |
218 | if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0) | |
219 | return; | |
220 | o->p_out += n; | |
221 | if (o->p_in < o->p_out) | |
222 | break; | |
223 | oo = o; | |
224 | o = o->next; | |
225 | xfree(oo); | |
226 | } | |
de014da6 | 227 | a->out.hd = o; |
fd3cf232 | 228 | if (!o) { |
de014da6 | 229 | a->out.tl = 0; |
fd3cf232 | 230 | sel_rmfile(&a->w); |
231 | } | |
232 | } | |
233 | ||
410c8acf | 234 | /*----- Utility functions -------------------------------------------------*/ |
235 | ||
f43df819 MW |
236 | /* --- @a_vformat@ --- * |
237 | * | |
238 | * Arguments: @dstr *d@ = where to leave the formatted message | |
239 | * @const char *fmt@ = pointer to format string | |
b730d38c | 240 | * @va_list *ap@ = arguments in list |
f43df819 MW |
241 | * |
242 | * Returns: --- | |
243 | * | |
7f73baaf MW |
244 | * Use: Main message token formatting driver. The arguments are |
245 | * interleaved formatting tokens and their parameters, finally | |
246 | * terminated by an entry @A_END@. | |
247 | * | |
248 | * Tokens recognized: | |
249 | * | |
250 | * * "*..." ... -- pretokenized @dstr_putf@-like string | |
251 | * | |
252 | * * "?ADDR" SOCKADDR -- a socket address, to be converted | |
253 | * | |
254 | * * "?B64" BUFFER SIZE -- binary data to be base64-encoded | |
255 | * | |
256 | * * "?TOKENS" VECTOR -- null-terminated vector of tokens | |
257 | * | |
258 | * * "?PEER" PEER -- peer's name | |
259 | * | |
260 | * * "?ERRNO" ERRNO -- system error code | |
261 | * | |
262 | * * "[!]..." ... -- @dstr_putf@-like string as single token | |
f43df819 MW |
263 | */ |
264 | ||
b730d38c | 265 | void a_vformat(dstr *d, const char *fmt, va_list *ap) |
f43df819 MW |
266 | { |
267 | dstr dd = DSTR_INIT; | |
268 | ||
269 | while (fmt) { | |
270 | if (*fmt == '*') { | |
6ebbf072 | 271 | if (d->len) dstr_putc(d, ' '); |
b730d38c | 272 | dstr_vputf(d, fmt + 1, ap); |
f43df819 MW |
273 | } else if (*fmt == '?') { |
274 | if (strcmp(fmt, "?ADDR") == 0) { | |
844abf94 | 275 | const addr *a = va_arg(*ap, const addr *); |
f43df819 MW |
276 | switch (a->sa.sa_family) { |
277 | case AF_INET: | |
0ed0735f MW |
278 | u_quotify(d, "INET"); |
279 | u_quotify(d, inet_ntoa(a->sin.sin_addr)); | |
f43df819 MW |
280 | dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port)); |
281 | break; | |
282 | default: | |
283 | abort(); | |
284 | } | |
285 | } else if (strcmp(fmt, "?B64") == 0) { | |
844abf94 MW |
286 | const octet *p = va_arg(*ap, const octet *); |
287 | size_t n = va_arg(*ap, size_t); | |
f43df819 MW |
288 | base64_ctx b64; |
289 | dstr_putc(d, ' '); | |
290 | base64_init(&b64); | |
291 | b64.indent = ""; | |
292 | b64.maxline = 0; | |
293 | base64_encode(&b64, p, n, d); | |
294 | base64_encode(&b64, 0, 0, d); | |
295 | while (d->len && d->buf[d->len - 1] == '=') d->len--; | |
3331936b | 296 | } else if (strcmp(fmt, "?TOKENS") == 0) { |
844abf94 | 297 | const char *const *av = va_arg(*ap, const char *const *); |
0ed0735f | 298 | while (*av) u_quotify(d, *av++); |
f43df819 | 299 | } else if (strcmp(fmt, "?PEER") == 0) |
844abf94 | 300 | u_quotify(d, p_name(va_arg(*ap, peer *))); |
f43df819 MW |
301 | else if (strcmp(fmt, "?ERRNO") == 0) { |
302 | dstr_putf(d, " E%d", errno); | |
0ed0735f | 303 | u_quotify(d, strerror(errno)); |
f43df819 MW |
304 | } else |
305 | abort(); | |
306 | } else { | |
307 | if (*fmt == '!') fmt++; | |
308 | DRESET(&dd); | |
b730d38c | 309 | dstr_vputf(&dd, fmt, ap); |
0ed0735f | 310 | u_quotify(d, dd.buf); |
f43df819 | 311 | } |
844abf94 | 312 | fmt = va_arg(*ap, const char *); |
f43df819 | 313 | } |
918a33b7 | 314 | dstr_putz(d); |
f43df819 MW |
315 | |
316 | dstr_destroy(&dd); | |
317 | } | |
318 | ||
f241e36c MW |
319 | /* --- @a_format@ --- * |
320 | * | |
321 | * Arguments: @dstr *d@ = where to leave the formatted message | |
322 | * @const char *fmt@ = pointer to format string | |
323 | * | |
324 | * Returns: --- | |
325 | * | |
326 | * Use: Writes a tokenized message into a string, for later | |
327 | * presentation. | |
328 | */ | |
329 | ||
330 | void a_format(dstr *d, const char *fmt, ...) | |
331 | { | |
332 | va_list ap; | |
333 | ||
334 | va_start(ap, fmt); | |
b730d38c | 335 | a_vformat(d, fmt, &ap); |
f241e36c MW |
336 | va_end(ap); |
337 | } | |
338 | ||
3cdc3f3a | 339 | /* --- @a_write@, @a_vwrite@ --- * |
410c8acf | 340 | * |
341 | * Arguments: @admin *a@ = admin connection to write to | |
de014da6 | 342 | * @const char *status@ = status code to report |
343 | * @const char *tag@ = tag string, or null | |
410c8acf | 344 | * @const char *fmt@ = pointer to format string |
844abf94 | 345 | * @va_list *ap@ = arguments in list |
410c8acf | 346 | * @...@ = other arguments |
347 | * | |
348 | * Returns: --- | |
349 | * | |
350 | * Use: Sends a message to an admin connection. | |
351 | */ | |
352 | ||
de014da6 | 353 | static void a_vwrite(admin *a, const char *status, const char *tag, |
b730d38c | 354 | const char *fmt, va_list *ap) |
410c8acf | 355 | { |
410c8acf | 356 | dstr d = DSTR_INIT; |
f98df549 | 357 | |
de014da6 | 358 | if (tag) dstr_puts(&d, "BG"); |
359 | dstr_puts(&d, status); | |
0ed0735f | 360 | if (tag) u_quotify(&d, tag); |
f43df819 | 361 | a_vformat(&d, fmt, ap); |
3cdc3f3a | 362 | dstr_putc(&d, '\n'); |
363 | dosend(a, d.buf, d.len); | |
364 | dstr_destroy(&d); | |
365 | } | |
366 | ||
de014da6 | 367 | static void a_write(admin *a, const char *status, const char *tag, |
368 | const char *fmt, ...) | |
3cdc3f3a | 369 | { |
370 | va_list ap; | |
f98df549 | 371 | |
410c8acf | 372 | va_start(ap, fmt); |
b730d38c | 373 | a_vwrite(a, status, tag, fmt, &ap); |
410c8acf | 374 | va_end(ap); |
3cdc3f3a | 375 | } |
376 | ||
fe182f61 | 377 | /* --- @a_ok@, @a_fail@ --- * |
3cdc3f3a | 378 | * |
379 | * Arguments: @admin *a@ = connection | |
380 | * @const char *fmt@ = format string | |
381 | * @...@ = other arguments | |
382 | * | |
383 | * Returns: --- | |
384 | * | |
385 | * Use: Convenience functions for @a_write@. | |
386 | */ | |
387 | ||
f43df819 | 388 | static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); } |
3cdc3f3a | 389 | |
fe182f61 | 390 | static void a_fail(admin *a, const char *fmt, ...) |
3cdc3f3a | 391 | { |
392 | va_list ap; | |
f98df549 | 393 | |
3cdc3f3a | 394 | va_start(ap, fmt); |
fe182f61 | 395 | a_vwrite(a, "FAIL", 0, fmt, &ap); |
3cdc3f3a | 396 | va_end(ap); |
397 | } | |
398 | ||
fe182f61 MW |
399 | /* --- @a_info@ --- * |
400 | * | |
401 | * Arguments: @admin *a@ = connection | |
402 | * @const char *fmt@ = format string | |
403 | * @...@ = other arguments | |
404 | * | |
405 | * Returns: --- | |
406 | * | |
407 | * Use: Report information to an admin client. | |
408 | */ | |
409 | ||
410 | void a_info(admin *a, const char *fmt, ...) | |
3cdc3f3a | 411 | { |
412 | va_list ap; | |
f98df549 | 413 | |
3cdc3f3a | 414 | va_start(ap, fmt); |
fe182f61 | 415 | a_vwrite(a, "INFO", 0, fmt, &ap); |
3cdc3f3a | 416 | va_end(ap); |
417 | } | |
418 | ||
419 | /* --- @a_alert@, @a_valert@, @a_rawalert@ --- * | |
420 | * | |
421 | * Arguments: @unsigned f_and, f_eq@ = filter for connections | |
de014da6 | 422 | * @const char *status@ = status string |
3cdc3f3a | 423 | * @const char *fmt@ = pointer to format string |
de014da6 | 424 | * @const char *p@ = pointer to raw string |
3cdc3f3a | 425 | * @size_t sz@ = size of raw string |
844abf94 | 426 | * @va_list *ap@ = arguments in list |
3cdc3f3a | 427 | * @...@ = other arguments |
428 | * | |
429 | * Returns: --- | |
430 | * | |
431 | * Use: Write a message to all admin connections matched by the given | |
432 | * filter. | |
433 | */ | |
434 | ||
de014da6 | 435 | static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 436 | const char *p, size_t sz) |
437 | { | |
438 | admin *a, *aa; | |
439 | dstr d = DSTR_INIT; | |
e04c2d50 | 440 | |
3cdc3f3a | 441 | if (!(flags & F_INIT)) |
442 | return; | |
de014da6 | 443 | dstr_puts(&d, status); |
444 | if (p) { | |
445 | dstr_putc(&d, ' '); | |
3cdc3f3a | 446 | dstr_putm(&d, p, sz); |
de014da6 | 447 | } |
3cdc3f3a | 448 | dstr_putc(&d, '\n'); |
449 | p = d.buf; | |
450 | sz = d.len; | |
451 | for (a = admins; a; a = aa) { | |
452 | aa = a->next; | |
453 | if ((a->f & f_and) == f_eq) | |
454 | dosend(a, d.buf, d.len); | |
455 | } | |
410c8acf | 456 | dstr_destroy(&d); |
457 | } | |
458 | ||
b9adb829 | 459 | static void a_valert(unsigned f_and, unsigned f_eq, const char *status, |
b730d38c | 460 | const char *fmt, va_list *ap) |
3cdc3f3a | 461 | { |
462 | dstr d = DSTR_INIT; | |
463 | ||
464 | if (!(flags & F_INIT)) | |
465 | return; | |
f43df819 | 466 | a_vformat(&d, fmt, ap); |
b9adb829 | 467 | a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0); |
3cdc3f3a | 468 | dstr_destroy(&d); |
469 | } | |
470 | ||
b9adb829 | 471 | static void a_alert(unsigned f_and, unsigned f_eq, const char *status, |
3cdc3f3a | 472 | const char *fmt, ...) |
473 | { | |
474 | va_list ap; | |
f98df549 | 475 | |
3cdc3f3a | 476 | va_start(ap, fmt); |
b730d38c | 477 | a_valert(f_and, f_eq, status, fmt, &ap); |
3cdc3f3a | 478 | va_end(ap); |
479 | } | |
3cdc3f3a | 480 | |
410c8acf | 481 | /* --- @a_warn@ --- * |
482 | * | |
483 | * Arguments: @const char *fmt@ = pointer to format string | |
484 | * @...@ = other arguments | |
485 | * | |
486 | * Returns: --- | |
487 | * | |
488 | * Use: Informs all admin connections of a warning. | |
489 | */ | |
490 | ||
491 | void a_warn(const char *fmt, ...) | |
492 | { | |
493 | va_list ap; | |
410c8acf | 494 | |
410c8acf | 495 | va_start(ap, fmt); |
3cdc3f3a | 496 | if (flags & F_INIT) |
b730d38c | 497 | a_valert(0, 0, "WARN", fmt, &ap); |
410c8acf | 498 | else { |
f43df819 | 499 | dstr d = DSTR_INIT; |
3cdc3f3a | 500 | fprintf(stderr, "%s: ", QUIS); |
b730d38c | 501 | a_vformat(&d, fmt, &ap); |
f43df819 MW |
502 | dstr_putc(&d, '\n'); |
503 | dstr_write(&d, stderr); | |
504 | dstr_destroy(&d); | |
410c8acf | 505 | } |
3cdc3f3a | 506 | va_end(ap); |
410c8acf | 507 | } |
508 | ||
509 | /* --- @a_trace@ --- * | |
510 | * | |
511 | * Arguments: @const char *p@ = pointer to a buffer | |
512 | * @size_t sz@ = size of the buffer | |
513 | * @void *v@ = uninteresting pointer | |
514 | * | |
515 | * Returns: --- | |
516 | * | |
3cdc3f3a | 517 | * Use: Custom trace output handler. Sends trace messages to |
518 | * interested admin connections. | |
410c8acf | 519 | */ |
520 | ||
521 | #ifndef NTRACE | |
522 | static void a_trace(const char *p, size_t sz, void *v) | |
de014da6 | 523 | { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); } |
410c8acf | 524 | #endif |
525 | ||
3cdc3f3a | 526 | /* --- @a_notify@ --- * |
527 | * | |
528 | * Arguments: @const char *fmt@ = pointer to format string | |
529 | * @...@ = other arguments | |
530 | * | |
531 | * Returns: --- | |
532 | * | |
533 | * Use: Sends a notification to interested admin connections. | |
534 | */ | |
535 | ||
536 | void a_notify(const char *fmt, ...) | |
537 | { | |
538 | va_list ap; | |
539 | ||
540 | va_start(ap, fmt); | |
b730d38c | 541 | a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, &ap); |
3cdc3f3a | 542 | va_end(ap); |
543 | } | |
544 | ||
410c8acf | 545 | /* --- @a_quit@ --- * |
546 | * | |
547 | * Arguments: --- | |
548 | * | |
549 | * Returns: --- | |
550 | * | |
551 | * Use: Shuts things down nicely. | |
552 | */ | |
553 | ||
554 | void a_quit(void) | |
555 | { | |
556 | close(sock.fd); | |
557 | unlink(sockname); | |
c8e02c8a | 558 | FOREACH_PEER(p, { p_destroy(p); }); |
388e0319 | 559 | ps_quit(); |
410c8acf | 560 | exit(0); |
561 | } | |
562 | ||
563 | /* --- @a_sigdie@ --- * | |
564 | * | |
565 | * Arguments: @int sig@ = signal number | |
566 | * @void *v@ = an uninteresting argument | |
567 | * | |
568 | * Returns: --- | |
569 | * | |
570 | * Use Shuts down on receipt of a fatal signal. | |
571 | */ | |
572 | ||
573 | static void a_sigdie(int sig, void *v) | |
574 | { | |
575 | char *p; | |
576 | char buf[20]; | |
577 | ||
578 | switch (sig) { | |
579 | case SIGTERM: p = "SIGTERM"; break; | |
580 | case SIGINT: p = "SIGINT"; break; | |
581 | default: | |
3cdc3f3a | 582 | sprintf(buf, "%i", sig); |
410c8acf | 583 | p = buf; |
584 | break; | |
585 | } | |
f43df819 | 586 | a_warn("SERVER", "quit", "signal", "%s", p, A_END); |
410c8acf | 587 | a_quit(); |
588 | } | |
589 | ||
590 | /* --- @a_sighup@ --- * | |
591 | * | |
592 | * Arguments: @int sig@ = signal number | |
593 | * @void *v@ = an uninteresting argument | |
594 | * | |
595 | * Returns: --- | |
596 | * | |
597 | * Use Logs a message about SIGHUP not being useful. | |
598 | */ | |
599 | ||
600 | static void a_sighup(int sig, void *v) | |
f98df549 | 601 | { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); } |
410c8acf | 602 | |
0ba8de86 | 603 | /* --- @a_parsetime@ --- * |
604 | * | |
605 | * Arguments; @const char *p@ = time string to parse | |
606 | * | |
607 | * Returns: Time in seconds, or @< 0@ on error. | |
608 | */ | |
609 | ||
610 | static long a_parsetime(const char *p) | |
611 | { | |
612 | char *q; | |
613 | long t = strtol(p, &q, 0); | |
614 | ||
615 | switch (*q) { | |
616 | case 'd': t *= 24; | |
617 | case 'h': t *= 60; | |
618 | case 'm': t *= 60; | |
619 | case 's': if (q[1] != 0) | |
e04c2d50 | 620 | default: t = -1; |
0ba8de86 | 621 | case 0: break; |
622 | } | |
e04c2d50 | 623 | return (t); |
0ba8de86 | 624 | } |
625 | ||
37941236 | 626 | /* --- @a_findpeer@ --- * |
627 | * | |
628 | * Arguments: @admin *a@ = admin connection | |
629 | * @const char *pn@ = peer name | |
630 | * | |
631 | * Returns: The peer, or null if not there. | |
632 | * | |
633 | * Use: Finds a peer, reporting an error if it failed. | |
634 | */ | |
635 | ||
636 | static peer *a_findpeer(admin *a, const char *pn) | |
637 | { | |
638 | peer *p; | |
639 | ||
640 | if ((p = p_find(pn)) == 0) | |
f43df819 | 641 | a_fail(a, "unknown-peer", "%s", pn, A_END); |
37941236 | 642 | return (p); |
643 | } | |
644 | ||
de014da6 | 645 | /*----- Backgrounded operations -------------------------------------------*/ |
646 | ||
060ca767 | 647 | #define BGTAG(bg) \ |
648 | (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>") | |
649 | ||
ff92ffd3 MW |
650 | /* --- @a_bgfind@ --- * |
651 | * | |
652 | * Arguments: @admin *a@ = a client block | |
653 | * @const char *tag@ = the requested tag | |
654 | * | |
655 | * Returns: The requested background job, or null. | |
656 | */ | |
657 | ||
658 | static admin_bgop *a_bgfind(admin *a, const char *tag) | |
659 | { | |
660 | admin_bgop *bg; | |
661 | ||
662 | for (bg = a->bg; bg; bg = bg->next) { | |
663 | if (bg->tag && strcmp(tag, bg->tag) == 0) | |
664 | return (bg); | |
665 | } | |
666 | return (0); | |
667 | } | |
668 | ||
de014da6 | 669 | /* --- @a_bgrelease@ --- * |
670 | * | |
671 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
672 | * | |
673 | * Returns: --- | |
674 | * | |
675 | * Use: Removes a backgrounded operation from the queue, since | |
676 | * (presumably) it's done. | |
677 | */ | |
678 | ||
679 | static void a_bgrelease(admin_bgop *bg) | |
680 | { | |
681 | admin *a = bg->a; | |
682 | ||
060ca767 | 683 | T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); ) |
684 | if (bg->tag) xfree(bg->tag); | |
685 | else selbuf_enable(&a->b); | |
686 | if (bg->next) bg->next->prev = bg->prev; | |
687 | if (bg->prev) bg->prev->next = bg->next; | |
688 | else a->bg = bg->next; | |
de014da6 | 689 | xfree(bg); |
547a9c13 | 690 | if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a); |
de014da6 | 691 | } |
692 | ||
693 | /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- * | |
694 | * | |
695 | * Arguments: @admin_bgop *bg@ = backgrounded operation | |
696 | * @const char *fmt@ = format string | |
697 | * @...@ = other arguments | |
698 | * | |
699 | * Returns: --- | |
700 | * | |
701 | * Use: Convenience functions for @a_write@. | |
702 | */ | |
703 | ||
704 | static void a_bgok(admin_bgop *bg) | |
f43df819 | 705 | { a_write(bg->a, "OK", bg->tag, A_END); } |
de014da6 | 706 | |
707 | static void a_bginfo(admin_bgop *bg, const char *fmt, ...) | |
708 | { | |
709 | va_list ap; | |
710 | va_start(ap, fmt); | |
b730d38c | 711 | a_vwrite(bg->a, "INFO", bg->tag, fmt, &ap); |
de014da6 | 712 | va_end(ap); |
713 | } | |
714 | ||
715 | static void a_bgfail(admin_bgop *bg, const char *fmt, ...) | |
716 | { | |
717 | va_list ap; | |
718 | va_start(ap, fmt); | |
b730d38c | 719 | a_vwrite(bg->a, "FAIL", bg->tag, fmt, &ap); |
de014da6 | 720 | va_end(ap); |
721 | } | |
722 | ||
723 | /* --- @a_bgadd@ --- * | |
724 | * | |
725 | * Arguments: @admin *a@ = administration connection | |
726 | * @admin_bgop *bg@ = pointer to background operation | |
727 | * @const char *tag@ = background tag, or null for foreground | |
728 | * @void (*cancel)(admin_bgop *)@ = cancel function | |
729 | * | |
ff92ffd3 | 730 | * Returns: Zero for success, nonzero on failure. |
de014da6 | 731 | * |
732 | * Use: Links a background job into the list. | |
733 | */ | |
734 | ||
ff92ffd3 MW |
735 | static int a_bgadd(admin *a, admin_bgop *bg, const char *tag, |
736 | void (*cancel)(admin_bgop *)) | |
de014da6 | 737 | { |
ff92ffd3 MW |
738 | if (tag) { |
739 | if (a_bgfind(a, tag)) { | |
740 | a_fail(a, "tag-exists", "%s", tag, A_END); | |
741 | return (-1); | |
742 | } | |
de014da6 | 743 | bg->tag = xstrdup(tag); |
ff92ffd3 | 744 | } |
de014da6 | 745 | else { |
746 | bg->tag = 0; | |
747 | selbuf_disable(&a->b); | |
748 | } | |
749 | bg->a = a; | |
750 | bg->cancel = cancel; | |
751 | bg->next = a->bg; | |
752 | bg->prev = 0; | |
060ca767 | 753 | if (a->bg) a->bg->prev = bg; |
de014da6 | 754 | a->bg = bg; |
060ca767 | 755 | T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); ) |
f43df819 | 756 | if (tag) a_write(a, "DETACH", tag, A_END); |
ff92ffd3 | 757 | return (0); |
de014da6 | 758 | } |
759 | ||
5d46c0f8 MW |
760 | /*----- Job table manipulation --------------------------------------------*/ |
761 | ||
762 | #define JOB_SHIFT 16 | |
763 | #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1) | |
764 | #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1) | |
765 | ||
766 | #define JOB_END 0xfffffffful | |
767 | ||
768 | static unsigned long a_joboffset; | |
769 | ||
770 | /* --- @a_jobidencode@ --- * | |
771 | * | |
772 | * Arguments: @admin_svcop *svc@ = pointer to a service operation | |
773 | * | |
774 | * Returns: A jobid for this job, in an internal static buffer. | |
775 | * | |
776 | * Use: Constructs a jobid. In order to dissuade people from | |
777 | * predicting jobids, we obfuscate them. | |
778 | * | |
779 | * A `raw' jobid consists of two 16-bit fields. The low 16 bits | |
780 | * are an index into a big array. The high 16 bits are a | |
781 | * sequence number recording how many times that slot has been | |
782 | * reused. | |
783 | * | |
784 | * This `raw' jobid is then obfuscated by adding a randomly- | |
785 | * generated offset, and multiplying (mod %$2^{32}$%) by a fixed | |
786 | * odd constant. | |
787 | */ | |
788 | ||
789 | static const char *a_jobidencode(admin_svcop *svc) | |
790 | { | |
791 | admin_jobtable *j = &svc->prov->j; | |
792 | static char buf[10]; | |
793 | unsigned long pre; | |
794 | unsigned seq; | |
795 | ||
796 | assert(svc->index <= JOB_INDEXMASK); | |
797 | seq = j->v[svc->index].seq; | |
798 | assert(seq <= JOB_SEQMASK); | |
799 | pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT); | |
800 | sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff); | |
801 | return (buf); | |
802 | } | |
803 | ||
804 | /* --- @a_jobiddecode@ --- * | |
805 | * | |
806 | * Arguments: @admin_jobtable *j@ = pointer to a job table | |
807 | * @const char *jid@ = pointer to a jobid string | |
808 | * | |
809 | * Returns: A pointer to the job's @svcop@ structure. | |
810 | */ | |
811 | ||
812 | static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid) | |
813 | { | |
814 | unsigned i; | |
815 | unsigned long pre; | |
816 | ||
817 | if (jid[0] != 'J') | |
818 | return (0); | |
819 | for (i = 1; i < 9; i++) { | |
820 | if (!isxdigit((unsigned char)jid[i])) | |
821 | return (0); | |
822 | } | |
823 | if (jid[9] != 0) | |
824 | return (0); | |
825 | pre = strtoul(jid + 1, 0, 16); | |
826 | pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff; | |
827 | i = pre & JOB_INDEXMASK; | |
828 | if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT)) | |
829 | return (0); | |
830 | return (j->v[i].u.op); | |
831 | } | |
832 | ||
833 | /* --- @a_jobcreate@ --- * | |
834 | * | |
835 | * Arguments: @admin *a@ = pointer to administration client | |
836 | * | |
837 | * Returns: A pointer to a freshly-allocated @svcop@, or null. | |
838 | * | |
839 | * Use: Allocates a fresh @svcop@ and links it into a job table. | |
840 | */ | |
841 | ||
842 | static admin_svcop *a_jobcreate(admin *a) | |
843 | { | |
844 | admin_svcop *svc; | |
845 | unsigned i; | |
846 | unsigned sz; | |
847 | admin_jobtable *j = &a->j; | |
848 | ||
849 | if (j->free != JOB_END) { | |
850 | i = j->free; | |
851 | j->free = j->v[i].u.next; | |
852 | } else { | |
853 | if (j->n == j->sz) { | |
854 | if (j->sz > JOB_INDEXMASK) | |
855 | return (0); | |
856 | sz = j->sz; | |
857 | if (!sz) { | |
858 | j->sz = 16; | |
859 | j->v = xmalloc(j->sz * sizeof(*j->v)); | |
860 | } else { | |
861 | j->sz = sz << 1; | |
862 | j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v)); | |
863 | } | |
864 | } | |
865 | i = j->n++; | |
866 | j->v[i].seq = 0; | |
867 | } | |
868 | svc = xmalloc(sizeof(*svc)); | |
869 | svc->index = i; | |
870 | svc->prov = a; | |
871 | svc->next = j->active; | |
872 | svc->prev = 0; | |
873 | if (j->active) j->active->prev = svc; | |
874 | j->active = svc; | |
875 | j->v[i].u.op = svc; | |
876 | IF_TRACING(T_ADMIN, { | |
877 | trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i); | |
878 | }) | |
879 | return (svc); | |
880 | } | |
881 | ||
882 | /* --- @a_jobdestroy@ --- * | |
883 | * | |
884 | * Arguments: @admin_svcop *svc@ = pointer to job block | |
885 | * | |
886 | * Returns: --- | |
887 | * | |
888 | * Use: Frees up a completed (or cancelled) job. | |
889 | */ | |
890 | ||
891 | static void a_jobdestroy(admin_svcop *svc) | |
892 | { | |
893 | admin *a = svc->prov; | |
894 | admin_jobtable *j = &a->j; | |
895 | unsigned i = svc->index; | |
896 | ||
897 | IF_TRACING(T_ADMIN, { | |
898 | trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i); | |
899 | }) | |
900 | assert(j->v[i].u.op = svc); | |
901 | j->v[i].u.next = j->free; | |
902 | j->v[i].seq++; | |
903 | j->free = i; | |
904 | if (svc->next) svc->next->prev = svc->prev; | |
905 | if (svc->prev) svc->prev->next = svc->next; | |
906 | else j->active = svc->next; | |
907 | } | |
908 | ||
909 | /* --- @a_jobtableinit@ --- * | |
910 | * | |
911 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
912 | * | |
913 | * Returns: --- | |
914 | * | |
915 | * Use: Initializes a job table. | |
916 | */ | |
917 | ||
918 | static void a_jobtableinit(admin_jobtable *j) | |
919 | { | |
920 | if (!a_joboffset) | |
921 | a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1; | |
922 | j->n = j->sz = 0; | |
923 | j->active = 0; | |
924 | j->free = JOB_END; | |
925 | j->v = 0; | |
926 | } | |
927 | ||
928 | /* --- @a_jobtablefinal@ --- * | |
929 | * | |
930 | * Arguments: @admin_jobtable *j@ = pointer to job table | |
931 | * | |
932 | * Returns: --- | |
933 | * | |
934 | * Use: Closes down a job table. | |
935 | */ | |
936 | ||
937 | static void a_jobtablefinal(admin_jobtable *j) | |
938 | { | |
939 | admin_svcop *svc, *ssvc; | |
940 | ||
941 | for (svc = j->active; svc; svc = ssvc) { | |
942 | ssvc = svc->next; | |
943 | a_bgfail(&svc->bg, "provider-failed", A_END); | |
944 | a_bgrelease(&svc->bg); | |
945 | } | |
946 | if (j->v) xfree(j->v); | |
947 | } | |
948 | ||
be6a1b7a MW |
949 | /*----- Services infrastructure -------------------------------------------*/ |
950 | ||
951 | /* --- @a_svcfind@ --- * | |
952 | * | |
953 | * Arguments: @admin *a@ = the requesting client | |
954 | * @const char *name@ = service name wanted | |
955 | * | |
956 | * Returns: The service requested, or null. | |
957 | * | |
958 | * Use: Finds a service; reports an error if the service couldn't be | |
959 | * found. | |
960 | */ | |
961 | ||
962 | static admin_service *a_svcfind(admin *a, const char *name) | |
963 | { | |
964 | admin_service *svc; | |
965 | ||
966 | if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) { | |
967 | a_fail(a, "unknown-service", "%s", name, A_END); | |
968 | return (0); | |
969 | } | |
970 | return (svc); | |
971 | } | |
972 | ||
973 | /* --- @a_svcunlink@ --- * | |
974 | * | |
975 | * Arguments: @admin_service *svc@ = pointer to service structure | |
976 | * | |
977 | * Returns: --- | |
978 | * | |
979 | * Use: Unlinks the service from its provider, without issuing a | |
980 | * message or freeing the structure. The version string is | |
981 | * freed, however. | |
982 | */ | |
983 | ||
984 | static void a_svcunlink(admin_service *svc) | |
985 | { | |
986 | if (svc->next) | |
987 | svc->next->prev = svc->prev; | |
988 | if (svc->prev) | |
989 | svc->prev->next = svc->next; | |
990 | else | |
991 | svc->prov->svcs = svc->next; | |
992 | xfree(svc->version); | |
993 | } | |
994 | ||
995 | /* --- @a_svcrelease@ --- * | |
996 | * | |
997 | * Arguments: @admin_service *svc@ = pointer to service structure | |
998 | * | |
999 | * Returns: --- | |
1000 | * | |
1001 | * Use: Releases a service and frees its structure. | |
1002 | */ | |
1003 | ||
1004 | static void a_svcrelease(admin_service *svc) | |
1005 | { | |
1006 | a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END); | |
1007 | a_svcunlink(svc); | |
1008 | sym_remove(&a_svcs, svc); | |
de014da6 | 1009 | } |
1010 | ||
37941236 | 1011 | /*----- Name resolution operations ----------------------------------------*/ |
de014da6 | 1012 | |
37941236 | 1013 | /* --- @a_resolved@ --- * |
de014da6 | 1014 | * |
37941236 | 1015 | * Arguments: @struct hostent *h@ = pointer to resolved hostname |
1016 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1017 | * |
1018 | * Returns: --- | |
1019 | * | |
37941236 | 1020 | * Use: Handles a completed name resolution. |
de014da6 | 1021 | */ |
1022 | ||
37941236 | 1023 | static void a_resolved(struct hostent *h, void *v) |
de014da6 | 1024 | { |
37941236 | 1025 | admin_resop *r = v; |
1026 | ||
1027 | T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); ) | |
f4c9c08f | 1028 | QUICKRAND; |
37941236 | 1029 | if (!h) { |
f43df819 | 1030 | a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END); |
37941236 | 1031 | r->func(r, ARES_FAIL); |
1032 | } else { | |
1033 | memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr)); | |
1034 | r->func(r, ARES_OK); | |
1035 | } | |
1036 | sel_rmtimer(&r->t); | |
1037 | xfree(r->addr); | |
1038 | a_bgrelease(&r->bg); | |
e04c2d50 | 1039 | } |
de014da6 | 1040 | |
37941236 | 1041 | /* --- @a_restimer@ --- * |
de014da6 | 1042 | * |
37941236 | 1043 | * Arguments: @struct timeval *tv@ = timer |
1044 | * @void *v@ = pointer to resolver operation | |
de014da6 | 1045 | * |
1046 | * Returns: --- | |
1047 | * | |
37941236 | 1048 | * Use: Times out a resolver. |
de014da6 | 1049 | */ |
1050 | ||
37941236 | 1051 | static void a_restimer(struct timeval *tv, void *v) |
de014da6 | 1052 | { |
37941236 | 1053 | admin_resop *r = v; |
1054 | ||
1055 | T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); ) | |
f43df819 | 1056 | a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END); |
37941236 | 1057 | r->func(r, ARES_FAIL); |
1058 | bres_abort(&r->r); | |
1059 | xfree(r->addr); | |
1060 | a_bgrelease(&r->bg); | |
de014da6 | 1061 | } |
1062 | ||
37941236 | 1063 | /* --- @a_rescancel@ --- * |
de014da6 | 1064 | * |
37941236 | 1065 | * Arguments: @admin_bgop *bg@ = background operation |
de014da6 | 1066 | * |
1067 | * Returns: --- | |
1068 | * | |
37941236 | 1069 | * Use: Cancels an add operation. |
de014da6 | 1070 | */ |
1071 | ||
37941236 | 1072 | static void a_rescancel(admin_bgop *bg) |
de014da6 | 1073 | { |
37941236 | 1074 | admin_resop *r = (admin_resop *)bg; |
1075 | ||
1076 | T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); ) | |
1077 | r->func(r, ARES_FAIL); | |
1078 | sel_rmtimer(&r->t); | |
1079 | xfree(r->addr); | |
1080 | bres_abort(&r->r); | |
de014da6 | 1081 | } |
37941236 | 1082 | |
1083 | /* --- @a_resolve@ --- * | |
410c8acf | 1084 | * |
37941236 | 1085 | * Arguments: @admin *a@ = administration connection |
1086 | * @admin_resop *r@ = resolver operation to run | |
1087 | * @const char *tag@ = background operation tag | |
1088 | * @void (*func)(struct admin_resop *, int@ = handler function | |
1089 | * @unsigned ac@ = number of remaining arguments | |
1090 | * @char *av[]@ = pointer to remaining arguments | |
410c8acf | 1091 | * |
1092 | * Returns: --- | |
1093 | * | |
37941236 | 1094 | * Use: Cranks up a resolver job. |
410c8acf | 1095 | */ |
1096 | ||
37941236 | 1097 | static void a_resolve(admin *a, admin_resop *r, const char *tag, |
1098 | void (*func)(struct admin_resop *, int), | |
1099 | unsigned ac, char *av[]) | |
410c8acf | 1100 | { |
37941236 | 1101 | struct timeval tv; |
1102 | unsigned long pt; | |
1103 | char *p; | |
1104 | int i = 0; | |
fd3cf232 | 1105 | |
37941236 | 1106 | /* --- Fill in the easy bits of address --- */ |
1107 | ||
452bf3f6 | 1108 | r->bg.tag = "<starting>"; |
37941236 | 1109 | r->addr = 0; |
1110 | r->func = func; | |
1111 | if (mystrieq(av[i], "inet")) i++; | |
165efde7 MW |
1112 | if (ac - i != 1 && ac - i != 2) { |
1113 | a_fail(a, "bad-addr-syntax", "[inet] ADDRESS [PORT]", A_END); | |
37941236 | 1114 | goto fail; |
1115 | } | |
1116 | r->sa.sin.sin_family = AF_INET; | |
1117 | r->sasz = sizeof(r->sa.sin); | |
1118 | r->addr = xstrdup(av[i]); | |
6f88042a | 1119 | if (!av[i + 1]) |
165efde7 MW |
1120 | pt = TRIPE_PORT; |
1121 | else { | |
1122 | pt = strtoul(av[i + 1], &p, 0); | |
1123 | if (*p) { | |
1124 | struct servent *s = getservbyname(av[i + 1], "udp"); | |
1125 | if (!s) { | |
1126 | a_fail(a, "unknown-service", "%s", av[i + 1], A_END); | |
1127 | goto fail; | |
1128 | } | |
1129 | pt = ntohs(s->s_port); | |
37941236 | 1130 | } |
410c8acf | 1131 | } |
37941236 | 1132 | if (pt == 0 || pt >= 65536) { |
f43df819 | 1133 | a_fail(a, "invalid-port", "%lu", pt, A_END); |
37941236 | 1134 | goto fail; |
1135 | } | |
1136 | r->sa.sin.sin_port = htons(pt); | |
1137 | ||
1138 | /* --- Report backgrounding --- * | |
1139 | * | |
1140 | * Do this for consistency of interface, even if we're going to get the | |
1141 | * answer straight away. | |
1142 | */ | |
1143 | ||
ff92ffd3 MW |
1144 | if (a_bgadd(a, &r->bg, tag, a_rescancel)) |
1145 | goto fail; | |
37941236 | 1146 | T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'", |
1147 | a->seq, BGTAG(r), r->addr); ) | |
1148 | ||
1149 | /* --- If the name is numeric, do it the easy way --- */ | |
e04c2d50 | 1150 | |
37941236 | 1151 | if (inet_aton(av[i], &r->sa.sin.sin_addr)) { |
1152 | T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); ) | |
1153 | func(r, ARES_OK); | |
1154 | xfree(r->addr); | |
1155 | a_bgrelease(&r->bg); | |
1156 | return; | |
1157 | } | |
1158 | ||
1159 | /* --- Store everything for later and crank up the resolver --- */ | |
1160 | ||
1161 | gettimeofday(&tv, 0); | |
1162 | tv.tv_sec += T_RESOLVE; | |
1163 | sel_addtimer(&sel, &r->t, &tv, a_restimer, r); | |
1164 | bres_byname(&r->r, r->addr, a_resolved, r); | |
1165 | return; | |
1166 | ||
1167 | fail: | |
1168 | func(r, ARES_FAIL); | |
1169 | if (r->addr) xfree(r->addr); | |
1170 | xfree(r); | |
410c8acf | 1171 | } |
1172 | ||
e7a4d919 MW |
1173 | /*----- Option parsing ----------------------------------------------------*/ |
1174 | ||
1175 | #define OPTIONS(argc, argv, guts) do { \ | |
1176 | char **o_av = argv; \ | |
1177 | for (;; o_av++) { \ | |
1178 | if (!*o_av) \ | |
1179 | break; \ | |
1180 | if (mystrieq(*o_av, "--")) { \ | |
1181 | o_av++; \ | |
1182 | break; \ | |
1183 | } \ | |
1184 | guts \ | |
1185 | if (**o_av == '-') \ | |
1186 | goto bad_syntax; \ | |
1187 | break; \ | |
1188 | } \ | |
1189 | argc -= o_av - argv; \ | |
1190 | argv = o_av; \ | |
1191 | } while (0) | |
1192 | ||
1193 | #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; } | |
1194 | ||
1195 | #define OPTARG(name, arg, guts) OPT(name, { \ | |
1196 | const char *arg; \ | |
1197 | arg = *++o_av; \ | |
1198 | if (!arg) goto bad_syntax; \ | |
1199 | guts \ | |
1200 | }) | |
1201 | ||
1202 | #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \ | |
1203 | long arg; \ | |
1204 | if ((arg = a_parsetime(o_arg)) < 0) { \ | |
1205 | a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \ | |
1206 | goto fail; \ | |
1207 | } \ | |
1208 | guts \ | |
1209 | }) | |
1210 | ||
37941236 | 1211 | /*----- Adding peers ------------------------------------------------------*/ |
1212 | ||
1213 | /* --- @a_doadd@ --- * | |
410c8acf | 1214 | * |
37941236 | 1215 | * Arguments: @admin_resop *r@ = resolver operation |
1216 | * @int rc@ = how it worked | |
410c8acf | 1217 | * |
1218 | * Returns: --- | |
1219 | * | |
37941236 | 1220 | * Use: Handles a completed resolution. |
410c8acf | 1221 | */ |
1222 | ||
37941236 | 1223 | static void a_doadd(admin_resop *r, int rc) |
410c8acf | 1224 | { |
37941236 | 1225 | admin_addop *add = (admin_addop *)r; |
1226 | ||
1227 | T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); ) | |
1228 | ||
1229 | if (rc == ARES_OK) { | |
1230 | add->peer.sasz = add->r.sasz; | |
1231 | add->peer.sa = add->r.sa; | |
c8e02c8a MW |
1232 | if (p_findbyaddr(&add->r.sa)) |
1233 | a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END); | |
1234 | else if (p_find(add->peer.name)) | |
f43df819 | 1235 | a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END); |
37941236 | 1236 | else if (!p_create(&add->peer)) |
f43df819 | 1237 | a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END); |
37941236 | 1238 | else |
1239 | a_bgok(&add->r.bg); | |
1240 | } | |
de014da6 | 1241 | |
48b84569 | 1242 | if (add->peer.tag) xfree(add->peer.tag); |
37941236 | 1243 | xfree(add->peer.name); |
410c8acf | 1244 | } |
1245 | ||
1246 | /* --- @acmd_add@ --- * | |
1247 | * | |
1248 | * Arguments: @admin *a@ = connection which requested the addition | |
1249 | * @unsigned ac@ = argument count | |
1250 | * @char *av[]@ = pointer to the argument list | |
1251 | * | |
1252 | * Returns: --- | |
1253 | * | |
1254 | * Use: Adds a new peer. | |
1255 | */ | |
1256 | ||
1257 | static void acmd_add(admin *a, unsigned ac, char *av[]) | |
1258 | { | |
de014da6 | 1259 | const char *tag = 0; |
9986f0b5 | 1260 | admin_addop *add; |
410c8acf | 1261 | |
0ba8de86 | 1262 | /* --- Set stuff up --- */ |
1263 | ||
de014da6 | 1264 | add = xmalloc(sizeof(*add)); |
9986f0b5 | 1265 | add->peer.name = 0; |
48b84569 | 1266 | add->peer.tag = 0; |
fe2a5dcf | 1267 | add->peer.privtag = 0; |
de014da6 | 1268 | add->peer.t_ka = 0; |
1269 | add->peer.tops = tun_default; | |
8743c776 | 1270 | add->peer.f = 0; |
37941236 | 1271 | |
42da2a58 | 1272 | /* --- Parse options --- */ |
1273 | ||
e7a4d919 MW |
1274 | OPTIONS(ac, av, { |
1275 | OPTARG("-background", arg, { tag = arg; }) | |
1276 | OPTARG("-tunnel", arg, { | |
1277 | unsigned i; | |
1278 | for (i = 0;; i++) { | |
1279 | if (!tunnels[i]) { | |
1280 | a_fail(a, "unknown-tunnel", "%s", arg, A_END); | |
37941236 | 1281 | goto fail; |
42da2a58 | 1282 | } |
e7a4d919 MW |
1283 | if (mystrieq(arg, tunnels[i]->name)) { |
1284 | add->peer.tops = tunnels[i]; | |
42da2a58 | 1285 | break; |
1286 | } | |
1287 | } | |
e7a4d919 MW |
1288 | }) |
1289 | OPTTIME("-keepalive", t, { add->peer.t_ka = t; }) | |
8743c776 | 1290 | OPT("-cork", { add->peer.f |= KXF_CORK; }) |
48b84569 MW |
1291 | OPTARG("-key", arg, { |
1292 | if (add->peer.tag) | |
1293 | xfree(add->peer.tag); | |
1294 | add->peer.tag = xstrdup(arg); | |
1295 | }) | |
6411163d | 1296 | OPT("-mobile", { add->peer.f |= PSF_MOBILE; }) |
fe2a5dcf MW |
1297 | OPTARG("-priv", arg, { |
1298 | if (add->peer.privtag) | |
1299 | xfree(add->peer.privtag); | |
1300 | add->peer.privtag = xstrdup(arg); | |
1301 | }) | |
e7a4d919 | 1302 | }); |
42da2a58 | 1303 | |
9986f0b5 MW |
1304 | /* --- Make sure someone's not got there already --- */ |
1305 | ||
bcf3764a | 1306 | if (!av[0] || !av[1]) |
9986f0b5 | 1307 | goto bad_syntax; |
e7a4d919 MW |
1308 | if (p_find(*av)) { |
1309 | a_fail(a, "peer-exists", "%s", *av, A_END); | |
9986f0b5 | 1310 | goto fail; |
42da2a58 | 1311 | } |
e7a4d919 MW |
1312 | add->peer.name = xstrdup(*av++); |
1313 | ac--; | |
42da2a58 | 1314 | |
37941236 | 1315 | /* --- Crank up the resolver --- */ |
de014da6 | 1316 | |
e7a4d919 | 1317 | a_resolve(a, &add->r, tag, a_doadd, ac, av); |
42da2a58 | 1318 | return; |
1319 | ||
37941236 | 1320 | /* --- Clearing up --- */ |
1321 | ||
42da2a58 | 1322 | bad_syntax: |
9986f0b5 | 1323 | a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END); |
de014da6 | 1324 | fail: |
9986f0b5 | 1325 | if (add->peer.name) xfree(add->peer.name); |
48b84569 | 1326 | if (add->peer.tag) xfree(add->peer.tag); |
fe2a5dcf | 1327 | if (add->peer.privtag) xfree(add->peer.privtag); |
37941236 | 1328 | xfree(add); |
0ba8de86 | 1329 | return; |
1330 | } | |
1331 | ||
1332 | /*----- Ping --------------------------------------------------------------*/ | |
1333 | ||
de014da6 | 1334 | /* --- @a_pingcancel@ --- * |
1335 | * | |
1336 | * Arguments: @admin_bgop *bg@ = background operation block | |
1337 | * | |
1338 | * Returns: --- | |
1339 | * | |
1340 | * Use: Cancels a running ping. | |
1341 | */ | |
1342 | ||
1343 | static void a_pingcancel(admin_bgop *bg) | |
1344 | { | |
1345 | admin_pingop *pg = (admin_pingop *)bg; | |
060ca767 | 1346 | T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); ) |
de014da6 | 1347 | p_pingdone(&pg->ping, PING_NONOTIFY); |
1348 | } | |
1349 | ||
0ba8de86 | 1350 | /* --- @a_pong@ --- * |
1351 | * | |
1352 | * Arguments: @int rc@ = return code | |
de014da6 | 1353 | * @void *v@ = ping operation block |
0ba8de86 | 1354 | * |
1355 | * Returns: --- | |
1356 | * | |
1357 | * Use: Collects what happened to a ping message. | |
1358 | */ | |
1359 | ||
de014da6 | 1360 | static void a_pong(int rc, void *v) |
0ba8de86 | 1361 | { |
de014da6 | 1362 | admin_pingop *pg = v; |
0ba8de86 | 1363 | struct timeval tv; |
1364 | double millis; | |
1365 | ||
0ba8de86 | 1366 | switch (rc) { |
1367 | case PING_OK: | |
1368 | gettimeofday(&tv, 0); | |
de014da6 | 1369 | tv_sub(&tv, &tv, &pg->pingtime); |
0ba8de86 | 1370 | millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000; |
f43df819 | 1371 | a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END); |
de014da6 | 1372 | a_bgok(&pg->bg); |
0ba8de86 | 1373 | break; |
1374 | case PING_TIMEOUT: | |
f43df819 | 1375 | a_bginfo(&pg->bg, "ping-timeout", A_END); |
de014da6 | 1376 | a_bgok(&pg->bg); |
0ba8de86 | 1377 | break; |
1378 | case PING_PEERDIED: | |
f43df819 | 1379 | a_bginfo(&pg->bg, "ping-peer-died", A_END); |
de014da6 | 1380 | a_bgok(&pg->bg); |
0ba8de86 | 1381 | break; |
1382 | default: | |
1383 | abort(); | |
1384 | } | |
060ca767 | 1385 | T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); ) |
de014da6 | 1386 | a_bgrelease(&pg->bg); |
0ba8de86 | 1387 | } |
1388 | ||
1389 | /* --- @acmd_ping@, @acmd_eping@ --- * | |
1390 | * | |
1391 | * Arguments: @admin *a@ = connection which requested the ping | |
1392 | * @unsigned ac@ = argument count | |
1393 | * @char *av[]@ = pointer to the argument list | |
1394 | * | |
1395 | * Returns: --- | |
1396 | * | |
1397 | * Use: Pings a peer. | |
1398 | */ | |
1399 | ||
1400 | static void a_ping(admin *a, unsigned ac, char *av[], | |
1401 | const char *cmd, unsigned msg) | |
1402 | { | |
1403 | long t = T_PING; | |
0ba8de86 | 1404 | peer *p; |
de014da6 | 1405 | admin_pingop *pg = 0; |
1406 | const char *tag = 0; | |
0ba8de86 | 1407 | |
e7a4d919 MW |
1408 | OPTIONS(ac, av, { |
1409 | OPTARG("-background", arg, { tag = arg; }) | |
1410 | OPTTIME("-timeout", arg, { t = arg; }) | |
1411 | }); | |
1412 | if (!*av || av[1]) goto bad_syntax; | |
1413 | if ((p = a_findpeer(a, *av)) == 0) | |
0ba8de86 | 1414 | return; |
de014da6 | 1415 | pg = xmalloc(sizeof(*pg)); |
1416 | gettimeofday(&pg->pingtime, 0); | |
ff92ffd3 MW |
1417 | if (a_bgadd(a, &pg->bg, tag, a_pingcancel)) |
1418 | goto fail; | |
060ca767 | 1419 | T( trace(T_ADMIN, "admin: ping op %s: %s to %s", |
1420 | BGTAG(pg), cmd, p_name(p)); ) | |
de014da6 | 1421 | if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) { |
f43df819 | 1422 | a_bgfail(&pg->bg, "ping-send-failed", A_END); |
de014da6 | 1423 | a_bgrelease(&pg->bg); |
1424 | } | |
0ba8de86 | 1425 | return; |
e04c2d50 | 1426 | |
0ba8de86 | 1427 | bad_syntax: |
f43df819 | 1428 | a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END); |
e7a4d919 | 1429 | fail: |
ff92ffd3 | 1430 | if (pg) xfree(pg); |
42da2a58 | 1431 | return; |
410c8acf | 1432 | } |
1433 | ||
0ba8de86 | 1434 | static void acmd_ping(admin *a, unsigned ac, char *av[]) |
1435 | { a_ping(a, ac, av, "ping", MISC_PING); } | |
1436 | static void acmd_eping(admin *a, unsigned ac, char *av[]) | |
1437 | { a_ping(a, ac, av, "eping", MISC_EPING); } | |
0ba8de86 | 1438 | |
be6a1b7a MW |
1439 | /*----- Service commands --------------------------------------------------*/ |
1440 | ||
1441 | static void acmd_svcclaim(admin *a, unsigned ac, char *av[]) | |
1442 | { | |
1443 | admin_service *svc; | |
1444 | unsigned f; | |
1445 | ||
1446 | svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f); | |
1447 | if (f) { | |
1448 | if (versioncmp(av[1], svc->version) <= 0) { | |
1449 | a_fail(a, | |
1450 | "service-exists", | |
1451 | "%s", SYM_NAME(svc), | |
1452 | "%s", svc->version, | |
1453 | A_END); | |
1454 | return; | |
1455 | } | |
1456 | a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END); | |
1457 | a_svcunlink(svc); | |
1458 | } | |
1459 | svc->prov = a; | |
1460 | svc->version = xstrdup(av[1]); | |
1461 | svc->next = a->svcs; | |
1462 | svc->prev = 0; | |
1463 | if (a->svcs) a->svcs->prev = svc; | |
1464 | a->svcs = svc; | |
1465 | a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1466 | a_ok(a); | |
1467 | } | |
1468 | ||
1469 | static void acmd_svcrelease(admin *a, unsigned ac, char *av[]) | |
1470 | { | |
1471 | admin_service *svc; | |
1472 | ||
1473 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1474 | return; | |
1475 | if (svc->prov != a) { | |
1476 | a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END); | |
1477 | return; | |
1478 | } | |
1479 | a_svcrelease(svc); | |
1480 | a_ok(a); | |
1481 | } | |
1482 | ||
1483 | static void acmd_svcensure(admin *a, unsigned ac, char *av[]) | |
1484 | { | |
1485 | admin_service *svc; | |
1486 | ||
1487 | if ((svc = a_svcfind(a, av[0])) == 0) | |
1488 | return; | |
1489 | if (av[1] && versioncmp(svc->version, av[1]) < 0) { | |
1490 | a_fail(a, "service-too-old", | |
1491 | "%s", SYM_NAME(svc), | |
1492 | "%s", svc->version, | |
1493 | A_END); | |
1494 | return; | |
1495 | } | |
1496 | a_ok(a); | |
1497 | } | |
1498 | ||
1499 | static void acmd_svcquery(admin *a, unsigned ac, char *av[]) | |
1500 | { | |
1501 | admin_service *svc; | |
1502 | ||
1503 | if ((svc = a_svcfind(a, av[0])) != 0) { | |
1504 | a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END); | |
1505 | a_ok(a); | |
1506 | } | |
1507 | } | |
1508 | ||
1509 | static void acmd_svclist(admin *a, unsigned ac, char *av[]) | |
1510 | { | |
1511 | admin_service *svc; | |
1512 | sym_iter i; | |
1513 | ||
1514 | for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; ) | |
1515 | a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END); | |
1516 | a_ok(a); | |
1517 | } | |
1518 | ||
ef2f29c9 MW |
1519 | static void a_canceljob(admin_bgop *bg) |
1520 | { | |
1521 | admin_svcop *svc = (admin_svcop *)bg; | |
1522 | ||
1523 | a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END); | |
1524 | a_jobdestroy(svc); | |
1525 | } | |
1526 | ||
1527 | static void acmd_svcsubmit(admin *a, unsigned ac, char *av[]) | |
1528 | { | |
1529 | const char *tag = 0; | |
1530 | admin_service *svc; | |
1531 | admin_svcop *svcop; | |
1532 | const char *ver = 0; | |
1533 | dstr d = DSTR_INIT; | |
1534 | ||
1535 | OPTIONS(ac, av, { | |
1536 | OPTARG("-background", arg, { tag = arg; }) | |
1537 | OPTARG("-version", arg, { ver = arg; }) | |
1538 | }); | |
1539 | if (!*av) goto bad_syntax; | |
1540 | if ((svc = a_svcfind(a, *av)) == 0) goto fail; | |
1541 | if (ver && versioncmp(svc->version, ver) < 0) { | |
1542 | a_fail(a, "service-too-old", | |
1543 | "%s", SYM_NAME(svc), | |
1544 | "%s", svc->version, | |
1545 | A_END); | |
1546 | goto fail; | |
1547 | } | |
1548 | if ((svcop = a_jobcreate(svc->prov)) == 0) { | |
1549 | a_fail(a, "provider-overloaded", A_END); | |
1550 | goto fail; | |
1551 | } | |
1552 | if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) { | |
1553 | a_jobdestroy(svcop); | |
1554 | goto fail; | |
1555 | } | |
1556 | a_write(svc->prov, "SVCJOB", 0, | |
1557 | "%s", a_jobidencode(svcop), | |
1558 | "?TOKENS", av, | |
1559 | A_END); | |
1560 | goto done; | |
1561 | ||
1562 | bad_syntax: | |
1563 | a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END); | |
1564 | fail: | |
1565 | done: | |
1566 | dstr_destroy(&d); | |
1567 | return; | |
1568 | } | |
1569 | ||
1570 | static void a_replycmd(admin *a, const char *status, int donep, char *av[]) | |
1571 | { | |
1572 | admin_svcop *svc; | |
1573 | ||
1574 | if ((svc = a_jobiddecode(&a->j, av[0])) == 0) { | |
1575 | a_fail(a, "unknown-jobid", av[0], A_END); | |
1576 | return; | |
1577 | } | |
1578 | a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END); | |
1579 | if (donep) { | |
1580 | a_jobdestroy(svc); | |
1581 | a_bgrelease(&svc->bg); | |
1582 | } | |
1583 | a_ok(a); | |
1584 | } | |
1585 | ||
1586 | static void acmd_svcok(admin *a, unsigned ac, char *av[]) | |
1587 | { a_replycmd(a, "OK", 1, av); } | |
1588 | static void acmd_svcinfo(admin *a, unsigned ac, char *av[]) | |
1589 | { a_replycmd(a, "INFO", 0, av); } | |
1590 | static void acmd_svcfail(admin *a, unsigned ac, char *av[]) | |
1591 | { a_replycmd(a, "FAIL", 1, av); } | |
1592 | ||
410c8acf | 1593 | /*----- Administration commands -------------------------------------------*/ |
1594 | ||
1595 | /* --- Miscellaneous commands --- */ | |
1596 | ||
3cdc3f3a | 1597 | /* --- @traceish@ --- * |
1598 | * | |
1599 | * Arguments: @admin *a@ = connection to complain on | |
1600 | * @unsigned ac@ = number of arguments | |
1601 | * @char *av[]@ = vector of arguments | |
1602 | * @const char *what@ = what we're messing with | |
1603 | * @const trace_opt *tt@ = options table | |
1604 | * @unsigned *ff@ = where the flags are | |
1605 | * | |
1606 | * Returns: Nonzero if anything changed. | |
1607 | * | |
1608 | * Use: Guts of trace-ish commands like `trace' and `watch'. | |
1609 | */ | |
410c8acf | 1610 | |
3cdc3f3a | 1611 | static int traceish(admin *a, unsigned ac, char *av[], |
1612 | const char *what, const trace_opt *tt, unsigned *ff) | |
410c8acf | 1613 | { |
3cdc3f3a | 1614 | int ch = 0; |
1615 | ||
410c8acf | 1616 | if (!ac || strcmp(av[0], "?") == 0) { |
1617 | const trace_opt *t; | |
3cdc3f3a | 1618 | for (t = tt; t->ch; t++) { |
f43df819 MW |
1619 | a_info(a, "*%c%c %s", |
1620 | t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END); | |
410c8acf | 1621 | } |
1622 | } else { | |
1623 | unsigned sense = 1; | |
3cdc3f3a | 1624 | unsigned f = *ff; |
1625 | const trace_opt *t; | |
410c8acf | 1626 | char *p = av[0]; |
1627 | ||
1628 | while (*p) { | |
1629 | switch (*p) { | |
1630 | case '+': sense = 1; break; | |
1631 | case '-': sense = 0; break; | |
1632 | default: | |
3cdc3f3a | 1633 | for (t = tt; t->ch; t++) { |
1634 | if (t->ch == *p) { | |
1635 | if (sense) f |= t->f; | |
1636 | else f &= ~t->f; | |
410c8acf | 1637 | goto tropt_ok; |
1638 | } | |
1639 | } | |
f43df819 | 1640 | a_fail(a, "bad-%s-option", what, "%c", *p, A_END); |
3cdc3f3a | 1641 | return (0); |
e04c2d50 | 1642 | tropt_ok:; |
410c8acf | 1643 | break; |
1644 | } | |
1645 | p++; | |
1646 | } | |
3cdc3f3a | 1647 | *ff = f; |
1648 | ch = 1; | |
410c8acf | 1649 | } |
3cdc3f3a | 1650 | a_ok(a); |
1651 | return (ch); | |
1652 | } | |
1653 | ||
1654 | #ifndef NTRACE | |
1655 | ||
1656 | static void acmd_trace(admin *a, unsigned ac, char *av[]) | |
1657 | { | |
1658 | if (traceish(a, ac, av, "trace", tr_opts, &tr_flags)) | |
1659 | trace_level(tr_flags); | |
410c8acf | 1660 | } |
1661 | ||
1662 | #endif | |
1663 | ||
3cdc3f3a | 1664 | static void acmd_watch(admin *a, unsigned ac, char *av[]) |
f98df549 | 1665 | { traceish(a, ac, av, "watch", w_opts, &a->f); } |
3cdc3f3a | 1666 | |
3cdc3f3a | 1667 | static void alertcmd(admin *a, unsigned f_and, unsigned f_eq, |
3331936b MW |
1668 | const char *status, char *av[]) |
1669 | { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); } | |
3cdc3f3a | 1670 | static void acmd_notify(admin *a, unsigned ac, char *av[]) |
3331936b | 1671 | { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); } |
3cdc3f3a | 1672 | static void acmd_warn(admin *a, unsigned ac, char *av[]) |
3331936b | 1673 | { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); } |
3cdc3f3a | 1674 | |
410c8acf | 1675 | static void acmd_port(admin *a, unsigned ac, char *av[]) |
f98df549 | 1676 | { a_info(a, "%u", p_port(), A_END); a_ok(a); } |
410c8acf | 1677 | |
410c8acf | 1678 | static void acmd_daemon(admin *a, unsigned ac, char *av[]) |
1679 | { | |
1680 | if (flags & F_DAEMON) | |
f43df819 | 1681 | a_fail(a, "already-daemon", A_END); |
410c8acf | 1682 | else { |
f43df819 | 1683 | a_notify("DAEMON", A_END); |
93bee2c4 | 1684 | if (a_stdin) |
410c8acf | 1685 | a_destroy(a_stdin); |
19dd2531 | 1686 | if (daemonize()) |
f43df819 | 1687 | a_fail(a, "daemon-error", "?ERRNO", A_END); |
93bee2c4 | 1688 | else { |
410c8acf | 1689 | flags |= F_DAEMON; |
3cdc3f3a | 1690 | a_ok(a); |
93bee2c4 | 1691 | } |
410c8acf | 1692 | } |
1693 | } | |
1694 | ||
ff92ffd3 MW |
1695 | static void acmd_jobs(admin *a, unsigned ac, char *av[]) |
1696 | { | |
1697 | admin_bgop *bg; | |
1698 | ||
1699 | for (bg = a->bg; bg; bg = bg->next) { | |
1700 | assert(bg->tag); | |
1701 | a_info(a, "%s", bg->tag, A_END); | |
1702 | } | |
1703 | a_ok(a); | |
1704 | } | |
1705 | ||
1706 | static void acmd_bgcancel(admin *a, unsigned ac, char *av[]) | |
1707 | { | |
1708 | admin_bgop *bg; | |
1709 | ||
1710 | if ((bg = a_bgfind(a, av[0])) == 0) | |
1711 | a_fail(a, "unknown-tag", "%s", av[0], A_END); | |
1712 | else { | |
1713 | bg->cancel(bg); | |
1714 | a_bgrelease(bg); | |
1715 | a_ok(a); | |
1716 | } | |
1717 | } | |
1718 | ||
449991a3 MW |
1719 | static void acmd_algs(admin *a, unsigned ac, char *av[]) |
1720 | { | |
35c8b547 MW |
1721 | peer *p; |
1722 | const kdata *kd; | |
5b9f3d37 | 1723 | const dhgrp *g; |
35c8b547 MW |
1724 | const algswitch *algs; |
1725 | ||
1726 | if (!ac) | |
1727 | kd = master; | |
1728 | else { | |
1729 | if ((p = a_findpeer(a, av[0])) == 0) return; | |
1730 | kd = p->kx.kpriv; | |
1731 | } | |
5b9f3d37 | 1732 | g = kd->grp; |
35c8b547 MW |
1733 | algs = &kd->algs; |
1734 | ||
5b9f3d37 | 1735 | g->ops->grpinfo(g, a); |
449991a3 | 1736 | a_info(a, |
35c8b547 MW |
1737 | "hash=%s", algs->h->name, |
1738 | "mgf=%s", algs->mgf->name, | |
1739 | "hash-sz=%lu", (unsigned long)algs->h->hashsz, | |
449991a3 MW |
1740 | A_END); |
1741 | a_info(a, | |
c70a7c5c MW |
1742 | "bulk-transform=%s", algs->bulk->ops->name, |
1743 | "bulk-overhead=%lu", | |
1744 | (unsigned long)algs->bulk->ops->overhead(algs->bulk), | |
449991a3 | 1745 | A_END); |
c70a7c5c | 1746 | algs->bulk->ops->alginfo(algs->bulk, a); |
449991a3 | 1747 | a_info(a, |
c70a7c5c MW |
1748 | "cipher-data-limit=%lu", |
1749 | (unsigned long)algs->bulk->ops->expsz(algs->bulk), | |
449991a3 | 1750 | A_END); |
449991a3 MW |
1751 | a_ok(a); |
1752 | } | |
1753 | ||
410c8acf | 1754 | static void acmd_list(admin *a, unsigned ac, char *av[]) |
1755 | { | |
c8e02c8a | 1756 | FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); }); |
3cdc3f3a | 1757 | a_ok(a); |
410c8acf | 1758 | } |
1759 | ||
1760 | static void acmd_ifname(admin *a, unsigned ac, char *av[]) | |
1761 | { | |
1762 | peer *p; | |
1763 | ||
37941236 | 1764 | if ((p = a_findpeer(a, av[0])) != 0) { |
f43df819 | 1765 | a_info(a, "%s", p_ifname(p), A_END); |
3cdc3f3a | 1766 | a_ok(a); |
1767 | } | |
410c8acf | 1768 | } |
1769 | ||
64cf2223 MW |
1770 | static void acmd_setifname(admin *a, unsigned ac, char *av[]) |
1771 | { | |
1772 | peer *p; | |
1773 | ||
1774 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1775 | a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END); | |
1776 | p_setifname(p, av[1]); | |
1777 | a_ok(a); | |
e04c2d50 | 1778 | } |
64cf2223 MW |
1779 | } |
1780 | ||
37941236 | 1781 | static void acmd_getchal(admin *a, unsigned ac, char *av[]) |
1782 | { | |
1783 | buf b; | |
1784 | ||
1785 | buf_init(&b, buf_i, PKBUFSZ); | |
1786 | c_new(&b); | |
f43df819 | 1787 | a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END); |
37941236 | 1788 | a_ok(a); |
1789 | } | |
1790 | ||
1791 | static void acmd_checkchal(admin *a, unsigned ac, char *av[]) | |
1792 | { | |
1793 | base64_ctx b64; | |
1794 | buf b; | |
1795 | dstr d = DSTR_INIT; | |
1796 | ||
1797 | base64_init(&b64); | |
1798 | base64_decode(&b64, av[0], strlen(av[0]), &d); | |
1799 | base64_decode(&b64, 0, 0, &d); | |
1800 | buf_init(&b, d.buf, d.len); | |
1801 | if (c_check(&b) || BBAD(&b) || BLEFT(&b)) | |
f43df819 | 1802 | a_fail(a, "invalid-challenge", A_END); |
37941236 | 1803 | else |
1804 | a_ok(a); | |
1805 | dstr_destroy(&d); | |
1806 | } | |
1807 | ||
1808 | static void acmd_greet(admin *a, unsigned ac, char *av[]) | |
1809 | { | |
1810 | peer *p; | |
1811 | base64_ctx b64; | |
1812 | dstr d = DSTR_INIT; | |
1813 | ||
1814 | if ((p = a_findpeer(a, av[0])) != 0) { | |
1815 | base64_init(&b64); | |
1816 | base64_decode(&b64, av[1], strlen(av[1]), &d); | |
1817 | base64_decode(&b64, 0, 0, &d); | |
1818 | p_greet(p, d.buf, d.len); | |
1819 | dstr_destroy(&d); | |
1820 | a_ok(a); | |
1821 | } | |
1822 | } | |
1823 | ||
410c8acf | 1824 | static void acmd_addr(admin *a, unsigned ac, char *av[]) |
1825 | { | |
1826 | peer *p; | |
1827 | const addr *ad; | |
1828 | ||
37941236 | 1829 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1830 | ad = p_addr(p); |
1831 | assert(ad->sa.sa_family == AF_INET); | |
f43df819 | 1832 | a_info(a, "?ADDR", ad, A_END); |
3cdc3f3a | 1833 | a_ok(a); |
410c8acf | 1834 | } |
1835 | } | |
1836 | ||
060ca767 | 1837 | static void acmd_peerinfo(admin *a, unsigned ac, char *av[]) |
1838 | { | |
1839 | peer *p; | |
1840 | const peerspec *ps; | |
f3c6d21c | 1841 | const char *ptag; |
060ca767 | 1842 | |
37941236 | 1843 | if ((p = a_findpeer(a, av[0])) != 0) { |
1844 | ps = p_spec(p); | |
f43df819 | 1845 | a_info(a, "tunnel=%s", ps->tops->name, A_END); |
fe2a5dcf MW |
1846 | a_info(a, "key=%s", p_tag(p), |
1847 | "current-key=%s", p->kx.kpub->tag, A_END); | |
f3c6d21c MW |
1848 | if ((ptag = p_privtag(p)) == 0) ptag = "(default)"; |
1849 | a_info(a, "private-key=%s", ptag, | |
fe2a5dcf | 1850 | "current-private-key=%s", p->kx.kpriv->tag, A_END); |
f43df819 | 1851 | a_info(a, "keepalive=%lu", ps->t_ka, A_END); |
37941236 | 1852 | a_ok(a); |
060ca767 | 1853 | } |
060ca767 | 1854 | } |
1855 | ||
1856 | static void acmd_servinfo(admin *a, unsigned ac, char *av[]) | |
1857 | { | |
f43df819 MW |
1858 | a_info(a, "implementation=edgeware-tripe", A_END); |
1859 | a_info(a, "version=%s", VERSION, A_END); | |
1860 | a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END); | |
060ca767 | 1861 | a_ok(a); |
1862 | } | |
1863 | ||
c7053da9 | 1864 | static void acmd_stats(admin *a, unsigned ac, char *av[]) |
1865 | { | |
1866 | peer *p; | |
1867 | stats *st; | |
1868 | ||
37941236 | 1869 | if ((p = a_findpeer(a, av[0])) == 0) |
060ca767 | 1870 | return; |
060ca767 | 1871 | |
1872 | st = p_stats(p); | |
f43df819 MW |
1873 | a_info(a, "start-time=%s", timestr(st->t_start), A_END); |
1874 | a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END); | |
1875 | a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END); | |
18ad8913 MW |
1876 | a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END); |
1877 | a_info(a, | |
1878 | "packets-out=%lu", st->n_out, | |
1879 | "bytes-out=%lu", st->sz_out, | |
1880 | A_END); | |
1881 | a_info(a, | |
1882 | "keyexch-packets-in=%lu", st->n_kxin, | |
1883 | "keyexch-bytes-in=%lu", st->sz_kxin, | |
1884 | A_END); | |
1885 | a_info(a, | |
1886 | "keyexch-packets-out=%lu", st->n_kxout, | |
1887 | "keyexch-bytes-out=%lu", st->sz_kxout, | |
1888 | A_END); | |
1889 | a_info(a, | |
1890 | "ip-packets-in=%lu", st->n_ipin, | |
1891 | "ip-bytes-in=%lu", st->sz_ipin, | |
1892 | A_END); | |
1893 | a_info(a, | |
e04c2d50 | 1894 | "ip-packets-out=%lu", st->n_ipout, |
18ad8913 MW |
1895 | "ip-bytes-out=%lu", st->sz_ipout, |
1896 | A_END); | |
f43df819 | 1897 | a_info(a, "rejected-packets=%lu", st->n_reject, A_END); |
060ca767 | 1898 | a_ok(a); |
c7053da9 | 1899 | } |
1900 | ||
410c8acf | 1901 | static void acmd_kill(admin *a, unsigned ac, char *av[]) |
1902 | { | |
1903 | peer *p; | |
f98df549 | 1904 | |
37941236 | 1905 | if ((p = a_findpeer(a, av[0])) != 0) { |
410c8acf | 1906 | p_destroy(p); |
3cdc3f3a | 1907 | a_ok(a); |
410c8acf | 1908 | } |
1909 | } | |
1910 | ||
0ba8de86 | 1911 | static void acmd_forcekx(admin *a, unsigned ac, char *av[]) |
1912 | { | |
1913 | peer *p; | |
f98df549 | 1914 | |
37941236 | 1915 | if ((p = a_findpeer(a, av[0])) != 0) { |
de014da6 | 1916 | kx_start(&p->kx, 1); |
0ba8de86 | 1917 | a_ok(a); |
1918 | } | |
1919 | } | |
1920 | ||
de014da6 | 1921 | static void acmd_reload(admin *a, unsigned ac, char *av[]) |
1922 | { p_keyreload(); a_ok(a); } | |
1923 | ||
410c8acf | 1924 | static void acmd_quit(admin *a, unsigned ac, char *av[]) |
1925 | { | |
f43df819 | 1926 | a_warn("SERVER", "quit", "admin-request", A_END); |
3cdc3f3a | 1927 | a_ok(a); |
410c8acf | 1928 | a_quit(); |
1929 | } | |
1930 | ||
3cdc3f3a | 1931 | static void acmd_version(admin *a, unsigned ac, char *av[]) |
1932 | { | |
f43df819 | 1933 | a_info(a, "%s", PACKAGE, "%s", VERSION, A_END); |
3cdc3f3a | 1934 | a_ok(a); |
1935 | } | |
1936 | ||
42da2a58 | 1937 | static void acmd_tunnels(admin *a, unsigned ac, char *av[]) |
1938 | { | |
1939 | int i; | |
f98df549 | 1940 | |
42da2a58 | 1941 | for (i = 0; tunnels[i]; i++) |
f43df819 | 1942 | a_info(a, "%s", tunnels[i]->name, A_END); |
42da2a58 | 1943 | a_ok(a); |
1944 | } | |
1945 | ||
410c8acf | 1946 | /* --- The command table and help --- */ |
1947 | ||
1948 | typedef struct acmd { | |
1949 | const char *name; | |
1950 | const char *help; | |
1951 | unsigned argmin, argmax; | |
1952 | void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1953 | } acmd; | |
1954 | ||
1955 | static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]); | |
1956 | ||
1957 | static const acmd acmdtab[] = { | |
9986f0b5 | 1958 | { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add }, |
f43df819 | 1959 | { "addr", "PEER", 1, 1, acmd_addr }, |
35c8b547 | 1960 | { "algs", "[PEER]", 0, 1, acmd_algs }, |
ff92ffd3 | 1961 | { "bgcancel", "TAG", 1, 1, acmd_bgcancel }, |
f43df819 MW |
1962 | { "checkchal", "CHAL", 1, 1, acmd_checkchal }, |
1963 | { "daemon", 0, 0, 0, acmd_daemon }, | |
1964 | { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping }, | |
1965 | { "forcekx", "PEER", 1, 1, acmd_forcekx }, | |
1966 | { "getchal", 0, 0, 0, acmd_getchal }, | |
1967 | { "greet", "PEER CHAL", 2, 2, acmd_greet }, | |
1968 | { "help", 0, 0, 0, acmd_help }, | |
1969 | { "ifname", "PEER", 1, 1, acmd_ifname }, | |
ff92ffd3 | 1970 | { "jobs", 0, 0, 0, acmd_jobs }, |
f43df819 MW |
1971 | { "kill", "PEER", 1, 1, acmd_kill }, |
1972 | { "list", 0, 0, 0, acmd_list }, | |
1973 | { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify }, | |
1974 | { "peerinfo", "PEER", 1, 1, acmd_peerinfo }, | |
1975 | { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping }, | |
1976 | { "port", 0, 0, 0, acmd_port }, | |
1977 | { "quit", 0, 0, 0, acmd_quit }, | |
1978 | { "reload", 0, 0, 0, acmd_reload }, | |
1979 | { "servinfo", 0, 0, 0, acmd_servinfo }, | |
64cf2223 | 1980 | { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname }, |
be6a1b7a MW |
1981 | { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim }, |
1982 | { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure }, | |
ef2f29c9 MW |
1983 | { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail }, |
1984 | { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo }, | |
be6a1b7a | 1985 | { "svclist", 0, 0, 0, acmd_svclist }, |
ef2f29c9 | 1986 | { "svcok", "JOBID", 1, 1, acmd_svcok }, |
be6a1b7a MW |
1987 | { "svcquery", "SERVICE", 1, 1, acmd_svcquery }, |
1988 | { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease }, | |
ef2f29c9 MW |
1989 | { "svcsubmit", "[OPTIONS] SERVICE TOKENS...", |
1990 | 2, 0xffff, acmd_svcsubmit }, | |
f43df819 | 1991 | { "stats", "PEER", 1, 1, acmd_stats }, |
de014da6 | 1992 | #ifndef NTRACE |
f43df819 | 1993 | { "trace", "[OPTIONS]", 0, 1, acmd_trace }, |
de014da6 | 1994 | #endif |
f43df819 MW |
1995 | { "tunnels", 0, 0, 0, acmd_tunnels }, |
1996 | { "version", 0, 0, 0, acmd_version }, | |
1997 | { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn }, | |
e04c2d50 | 1998 | { "watch", "[OPTIONS]", 0, 1, acmd_watch }, |
410c8acf | 1999 | { 0, 0, 0, 0, 0 } |
2000 | }; | |
2001 | ||
2002 | static void acmd_help(admin *a, unsigned ac, char *av[]) | |
2003 | { | |
2004 | const acmd *c; | |
f98df549 | 2005 | |
f43df819 MW |
2006 | for (c = acmdtab; c->name; c++) { |
2007 | if (c->help) | |
2008 | a_info(a, "%s", c->name, "*%s", c->help, A_END); | |
e04c2d50 | 2009 | else |
f43df819 MW |
2010 | a_info(a, "%s", c->name, A_END); |
2011 | } | |
3cdc3f3a | 2012 | a_ok(a); |
410c8acf | 2013 | } |
2014 | ||
2015 | /*----- Connection handling -----------------------------------------------*/ | |
2016 | ||
c511e1f9 | 2017 | /* --- @a_destroypending@ --- * |
410c8acf | 2018 | * |
c511e1f9 | 2019 | * Arguments: --- |
fd3cf232 | 2020 | * |
2021 | * Returns: --- | |
2022 | * | |
c511e1f9 | 2023 | * Use: Destroys pending admin connections at a safe time. |
fd3cf232 | 2024 | */ |
2025 | ||
c511e1f9 | 2026 | static void a_destroypending(void) |
410c8acf | 2027 | { |
94593d1b | 2028 | admin *a, *aa, *head; |
de014da6 | 2029 | admin_bgop *bg, *bbg; |
be6a1b7a | 2030 | admin_service *svc, *ssvc; |
de014da6 | 2031 | |
94593d1b MW |
2032 | /* --- Destroy connections marked as pending --- * |
2033 | * | |
2034 | * Slightly messy. Killing clients may cause others to finally die. Make | |
2035 | * sure that they can be put on the list without clobbering anything or | |
2036 | * getting lost. | |
2037 | */ | |
fd3cf232 | 2038 | |
94593d1b MW |
2039 | while (a_dead) { |
2040 | head = a_dead; | |
2041 | a_dead = 0; | |
2042 | for (a = head; a; a = aa) { | |
2043 | aa = a->next; | |
2044 | assert(a->f & AF_DEAD); | |
c511e1f9 | 2045 | |
94593d1b | 2046 | /* --- Report what we're doing --- */ |
c511e1f9 | 2047 | |
94593d1b MW |
2048 | T( trace(T_ADMIN, "admin: completing destruction of connection %u", |
2049 | a->seq); ) | |
c511e1f9 | 2050 | |
94593d1b | 2051 | /* --- If this is the foreground client then shut down --- */ |
46dde080 | 2052 | |
94593d1b MW |
2053 | if (a->f & AF_FOREGROUND) { |
2054 | T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); ) | |
2055 | a_warn("SERVER", "quit", "foreground-eof", A_END); | |
2056 | a_quit(); | |
2057 | } | |
46dde080 | 2058 | |
94593d1b | 2059 | /* --- Abort any background jobs in progress --- */ |
c511e1f9 | 2060 | |
94593d1b MW |
2061 | for (bg = a->bg; bg; bg = bbg) { |
2062 | bbg = bg->next; | |
2063 | bg->cancel(bg); | |
2064 | if (bg->tag) xfree(bg->tag); | |
2065 | xfree(bg); | |
2066 | } | |
c511e1f9 | 2067 | |
94593d1b | 2068 | /* --- Release services I hold, and abort pending jobs --- */ |
be6a1b7a | 2069 | |
94593d1b MW |
2070 | for (svc = a->svcs; svc; svc = ssvc) { |
2071 | ssvc = svc->next; | |
2072 | a_svcrelease(svc); | |
2073 | } | |
2074 | a_jobtablefinal(&a->j); | |
be6a1b7a | 2075 | |
94593d1b | 2076 | /* --- Close file descriptors and selectory --- */ |
c511e1f9 | 2077 | |
94593d1b MW |
2078 | selbuf_destroy(&a->b); |
2079 | if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd); | |
2080 | close(a->w.fd); | |
2081 | if (a_stdin == a) a_stdin = 0; | |
c511e1f9 | 2082 | |
94593d1b | 2083 | /* --- Done --- */ |
c511e1f9 | 2084 | |
94593d1b MW |
2085 | DESTROY(a); |
2086 | } | |
410c8acf | 2087 | } |
060ca767 | 2088 | } |
2089 | ||
fd3cf232 | 2090 | /* --- @a_destroy@ --- * |
2091 | * | |
2092 | * Arguments: @admin *a@ = pointer to an admin block | |
2093 | * | |
2094 | * Returns: --- | |
2095 | * | |
2096 | * Use: Destroys an admin block. This requires a certain amount of | |
2097 | * care. | |
2098 | */ | |
2099 | ||
de014da6 | 2100 | static void freequeue(oqueue *q) |
2101 | { | |
2102 | obuf *o, *oo; | |
2103 | ||
2104 | for (o = q->hd; o; o = oo) { | |
2105 | oo = o->next; | |
2106 | xfree(o); | |
2107 | } | |
2108 | q->hd = q->tl = 0; | |
2109 | } | |
2110 | ||
fd3cf232 | 2111 | static void a_destroy(admin *a) |
2112 | { | |
fd3cf232 | 2113 | if (a->f & AF_DEAD) |
2114 | return; | |
2115 | ||
c511e1f9 MW |
2116 | if (a->next) a->next->prev = a->prev; |
2117 | if (a->prev) a->prev->next = a->next; | |
2118 | else admins = a->next; | |
fd3cf232 | 2119 | |
c511e1f9 | 2120 | if (a->out.hd) sel_rmfile(&a->w); |
de014da6 | 2121 | freequeue(&a->out); |
fd3cf232 | 2122 | |
c511e1f9 MW |
2123 | a->f |= AF_DEAD; |
2124 | a->next = a_dead; | |
2125 | a_dead = a; | |
fd3cf232 | 2126 | |
c511e1f9 | 2127 | T( trace(T_ADMIN, "admin: killing connection %u", a->seq); ) |
fd3cf232 | 2128 | } |
2129 | ||
410c8acf | 2130 | /* --- @a_line@ --- * |
2131 | * | |
2132 | * Arguments: @char *p@ = pointer to the line read | |
3008eabf | 2133 | * @size_t len@ = length of the line |
410c8acf | 2134 | * @void *vp@ = pointer to my admin block |
2135 | * | |
2136 | * Returns: --- | |
2137 | * | |
2138 | * Use: Handles a line of input. | |
2139 | */ | |
2140 | ||
3008eabf | 2141 | static void a_line(char *p, size_t len, void *vp) |
410c8acf | 2142 | { |
2143 | admin *a = vp; | |
2144 | const acmd *c; | |
6f88042a | 2145 | char *av[16 + 1]; |
410c8acf | 2146 | size_t ac; |
2147 | ||
f4c9c08f | 2148 | QUICKRAND; |
fd3cf232 | 2149 | if (a->f & AF_DEAD) |
2150 | return; | |
410c8acf | 2151 | if (!p) { |
de014da6 | 2152 | if (!a->bg) |
2153 | a_destroy(a); | |
2154 | else { | |
2155 | a->f |= AF_CLOSE; | |
2156 | selbuf_disable(&a->b); | |
2157 | } | |
410c8acf | 2158 | return; |
2159 | } | |
6f88042a | 2160 | ac = str_qsplit(p, av, N(av) - 1, 0, STRF_QUOTE); |
410c8acf | 2161 | if (!ac) |
2162 | return; | |
6f88042a | 2163 | av[ac] = 0; |
410c8acf | 2164 | for (c = acmdtab; c->name; c++) { |
3cdc3f3a | 2165 | if (mystrieq(av[0], c->name)) { |
410c8acf | 2166 | ac--; |
f43df819 MW |
2167 | if (c->argmin > ac || ac > c->argmax) { |
2168 | if (!c->help) | |
2169 | a_fail(a, "bad-syntax", "%s", c->name, "", A_END); | |
e04c2d50 | 2170 | else |
f43df819 | 2171 | a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END); |
c511e1f9 | 2172 | } else |
410c8acf | 2173 | c->func(a, ac, av + 1); |
2174 | return; | |
2175 | } | |
2176 | } | |
f43df819 | 2177 | a_fail(a, "unknown-command", "%s", av[0], A_END); |
410c8acf | 2178 | } |
2179 | ||
2180 | /* --- @a_create@ --- * | |
2181 | * | |
2182 | * Arguments: @int fd_in, fd_out@ = file descriptors to use | |
3cdc3f3a | 2183 | * @unsigned f@ = initial flags to set |
410c8acf | 2184 | * |
2185 | * Returns: --- | |
2186 | * | |
2187 | * Use: Creates a new admin connection. | |
2188 | */ | |
2189 | ||
3cdc3f3a | 2190 | void a_create(int fd_in, int fd_out, unsigned f) |
410c8acf | 2191 | { |
2192 | admin *a = CREATE(admin); | |
3cdc3f3a | 2193 | |
93bee2c4 | 2194 | T( static unsigned seq = 0; |
2195 | a->seq = seq++; ) | |
410c8acf | 2196 | T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); ) |
de014da6 | 2197 | a->bg = 0; |
042d5c20 | 2198 | a->ref = 0; |
be6a1b7a | 2199 | a->svcs = 0; |
5d46c0f8 | 2200 | a_jobtableinit(&a->j); |
3cdc3f3a | 2201 | a->f = f; |
de014da6 | 2202 | if (fd_in == STDIN_FILENO) a_stdin = a; |
fd3cf232 | 2203 | fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2204 | if (fd_out != fd_in) |
fd3cf232 | 2205 | fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
410c8acf | 2206 | selbuf_init(&a->b, &sel, fd_in, a_line, a); |
fd3cf232 | 2207 | sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a); |
de014da6 | 2208 | a->out.hd = a->out.tl = 0; |
410c8acf | 2209 | a->next = admins; |
2210 | a->prev = 0; | |
de014da6 | 2211 | if (admins) admins->prev = a; |
410c8acf | 2212 | admins = a; |
2213 | } | |
2214 | ||
2215 | /* --- @a_accept@ --- * | |
2216 | * | |
2217 | * Arguments: @int fd@ = file descriptor to accept | |
2218 | * @unsigned mode@ = what to do | |
2219 | * @void *v@ = uninteresting pointer | |
2220 | * | |
2221 | * Returns: --- | |
2222 | * | |
2223 | * Use: Accepts a new admin connection. | |
2224 | */ | |
2225 | ||
2226 | static void a_accept(int fd, unsigned mode, void *v) | |
2227 | { | |
2228 | int nfd; | |
2229 | struct sockaddr_un sun; | |
cb160b86 | 2230 | socklen_t sz = sizeof(sun); |
410c8acf | 2231 | |
2232 | if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) { | |
1ecee057 | 2233 | if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK && |
2234 | errno != ECONNABORTED && errno != EPROTO) | |
f43df819 | 2235 | a_warn("ADMIN", "accept-error", "?ERRNO", A_END); |
410c8acf | 2236 | return; |
2237 | } | |
3cdc3f3a | 2238 | a_create(nfd, nfd, 0); |
410c8acf | 2239 | } |
2240 | ||
c511e1f9 MW |
2241 | /* --- @a_preselect@ --- * |
2242 | * | |
2243 | * Arguments: --- | |
2244 | * | |
2245 | * Returns: --- | |
2246 | * | |
2247 | * Use: Informs the admin module that we're about to select again, | |
2248 | * and that it should do cleanup things it has delayed until a | |
2249 | * `safe' time. | |
2250 | */ | |
2251 | ||
2252 | void a_preselect(void) { if (a_dead) a_destroypending(); } | |
2253 | ||
410c8acf | 2254 | /* --- @a_daemon@ --- * |
2255 | * | |
2256 | * Arguments: --- | |
2257 | * | |
2258 | * Returns: --- | |
2259 | * | |
2260 | * Use: Informs the admin module that it's a daemon. | |
2261 | */ | |
2262 | ||
f98df549 | 2263 | void a_daemon(void) { flags |= F_DAEMON; } |
410c8acf | 2264 | |
2265 | /* --- @a_init@ --- * | |
2266 | * | |
2267 | * Arguments: @const char *name@ = socket name to create | |
aa2405e8 MW |
2268 | * @uid_t u@ = user to own the socket |
2269 | * @gid_t g@ = group to own the socket | |
a9279e37 | 2270 | * @mode_t m@ = permissions to set on the socket |
410c8acf | 2271 | * |
2272 | * Returns: --- | |
2273 | * | |
2274 | * Use: Creates the admin listening socket. | |
2275 | */ | |
2276 | ||
a9279e37 | 2277 | void a_init(const char *name, uid_t u, gid_t g, mode_t m) |
410c8acf | 2278 | { |
2279 | int fd; | |
2280 | int n = 5; | |
2281 | struct sockaddr_un sun; | |
2282 | struct sigaction sa; | |
2283 | size_t sz; | |
879483d7 | 2284 | mode_t omask; |
410c8acf | 2285 | |
be6a1b7a MW |
2286 | /* --- Create services table --- */ |
2287 | ||
2288 | sym_create(&a_svcs); | |
2289 | ||
410c8acf | 2290 | /* --- Set up the socket address --- */ |
2291 | ||
2292 | sz = strlen(name) + 1; | |
2293 | if (sz > sizeof(sun.sun_path)) | |
2294 | die(EXIT_FAILURE, "socket name `%s' too long", name); | |
2295 | BURN(sun); | |
2296 | sun.sun_family = AF_UNIX; | |
2297 | memcpy(sun.sun_path, name, sz); | |
2298 | sz += offsetof(struct sockaddr_un, sun_path); | |
2299 | ||
2300 | /* --- Attempt to bind to the socket --- */ | |
2301 | ||
879483d7 | 2302 | omask = umask(0077); |
410c8acf | 2303 | again: |
2304 | if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) | |
2305 | die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno)); | |
2306 | if (bind(fd, (struct sockaddr *)&sun, sz) < 0) { | |
2307 | struct stat st; | |
2308 | int e = errno; | |
2309 | if (errno != EADDRINUSE) { | |
2310 | die(EXIT_FAILURE, "couldn't bind to address `%s': %s", | |
2311 | sun.sun_path, strerror(e)); | |
2312 | } | |
2313 | if (!n) | |
2314 | die(EXIT_FAILURE, "too many retries; giving up"); | |
2315 | n--; | |
2316 | if (!connect(fd, (struct sockaddr *)&sun, sz)) { | |
2317 | die(EXIT_FAILURE, "server already listening on admin socket `%s'", | |
2318 | sun.sun_path); | |
2319 | } | |
2320 | if (errno != ECONNREFUSED) | |
2321 | die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e)); | |
2322 | if (stat(sun.sun_path, &st)) { | |
2323 | die(EXIT_FAILURE, "couldn't stat `%s': %s", | |
2324 | sun.sun_path, strerror(errno)); | |
2325 | } | |
2326 | if (!S_ISSOCK(st.st_mode)) | |
2327 | die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path); | |
c7053da9 | 2328 | T( trace(T_ADMIN, "admin: stale socket found; removing it"); ) |
410c8acf | 2329 | unlink(sun.sun_path); |
2330 | close(fd); | |
2331 | goto again; | |
2332 | } | |
aa2405e8 | 2333 | if (chown(sun.sun_path, u, g)) { |
9e0161ce MW |
2334 | die(EXIT_FAILURE, "failed to set socket owner: %s", |
2335 | strerror(errno)); | |
aa2405e8 | 2336 | } |
a9279e37 MW |
2337 | if (chmod(sun.sun_path, m)) { |
2338 | die(EXIT_FAILURE, "failed to set socket permissions: %s", | |
2339 | strerror(errno)); | |
2340 | } | |
879483d7 | 2341 | umask(omask); |
410c8acf | 2342 | fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC); |
2343 | if (listen(fd, 5)) | |
2344 | die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno)); | |
2345 | ||
2346 | /* --- Listen to the socket --- */ | |
2347 | ||
2348 | sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0); | |
2349 | sel_addfile(&sock); | |
2350 | sockname = name; | |
2351 | bres_init(&sel); | |
2352 | T( trace_custom(a_trace, 0); | |
2353 | trace(T_ADMIN, "admin: enabled custom tracing"); ) | |
2354 | flags |= F_INIT; | |
2355 | ||
2356 | /* --- Set up signal handlers --- */ | |
2357 | ||
2358 | sig_add(&s_term, SIGTERM, a_sigdie, 0); | |
2359 | sig_add(&s_hup, SIGHUP, a_sighup, 0); | |
3cdc3f3a | 2360 | signal(SIGPIPE, SIG_IGN); |
410c8acf | 2361 | sigaction(SIGINT, 0, &sa); |
2362 | if (sa.sa_handler != SIG_IGN) | |
2363 | sig_add(&s_int, SIGINT, a_sigdie, 0); | |
2364 | } | |
2365 | ||
2366 | /*----- That's all, folks -------------------------------------------------*/ |