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