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[disorder] / server / server.c
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460b9539 1/*
2 * This file is part of DisOrder.
964e027d 3 * Copyright (C) 2004-2008 Richard Kettlewell
460b9539 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18 * USA
19 */
20
05b75f8d 21#include "disorder-server.h"
460b9539 22
23#ifndef NONCE_SIZE
24# define NONCE_SIZE 16
25#endif
26
10114017 27#ifndef CONFIRM_SIZE
28# define CONFIRM_SIZE 10
29#endif
30
460b9539 31int volume_left, volume_right; /* last known volume */
32
18e6d6e6 33/** @brief Accept all well-formed login attempts
34 *
35 * Used in debugging.
36 */
37int wideopen;
38
460b9539 39struct listener {
40 const char *name;
41 int pf;
42};
43
397ef7bb 44/** @brief One client connection */
460b9539 45struct conn {
397ef7bb 46 /** @brief Read commands from here */
460b9539 47 ev_reader *r;
397ef7bb 48 /** @brief Send responses to here */
460b9539 49 ev_writer *w;
397ef7bb 50 /** @brief Underlying file descriptor */
460b9539 51 int fd;
397ef7bb 52 /** @brief Unique identifier for connection used in log messages */
460b9539 53 unsigned tag;
397ef7bb 54 /** @brief Login name or NULL */
460b9539 55 char *who;
397ef7bb 56 /** @brief Event loop */
460b9539 57 ev_source *ev;
397ef7bb 58 /** @brief Nonce chosen for this connection */
460b9539 59 unsigned char nonce[NONCE_SIZE];
397ef7bb
RK
60 /** @brief Current reader callback
61 *
62 * We change this depending on whether we're servicing the @b log command
63 */
460b9539 64 ev_reader_callback *reader;
397ef7bb 65 /** @brief Event log output sending to this connection */
460b9539 66 struct eventlog_output *lo;
397ef7bb 67 /** @brief Parent listener */
460b9539 68 const struct listener *l;
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69 /** @brief Login cookie or NULL */
70 char *cookie;
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71 /** @brief Connection rights */
72 rights_type rights;
0126692c 73 /** @brief Next connection */
74 struct conn *next;
dd9af5cb
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75 /** @brief True if pending rescan had 'wait' set */
76 int rescan_wait;
460b9539 77};
78
0126692c 79/** @brief Linked list of connections */
80static struct conn *connections;
81
460b9539 82static int reader_callback(ev_source *ev,
83 ev_reader *reader,
460b9539 84 void *ptr,
85 size_t bytes,
86 int eof,
87 void *u);
88
89static const char *noyes[] = { "no", "yes" };
90
0126692c 91/** @brief Remove a connection from the connection list */
92static void remove_connection(struct conn *c) {
93 struct conn **cc;
94
95 for(cc = &connections; *cc && *cc != c; cc = &(*cc)->next)
96 ;
97 if(*cc)
98 *cc = c->next;
99}
100
397ef7bb
RK
101/** @brief Called when a connection's writer fails or is shut down
102 *
103 * If the connection still has a raeder that is cancelled.
104 */
460b9539 105static int writer_error(ev_source attribute((unused)) *ev,
460b9539 106 int errno_value,
107 void *u) {
108 struct conn *c = u;
109
8d8b8c1f 110 D(("server writer_error S%x %d", c->tag, errno_value));
460b9539 111 if(errno_value == 0) {
112 /* writer is done */
8d8b8c1f 113 D(("S%x writer completed", c->tag));
460b9539 114 } else {
115 if(errno_value != EPIPE)
116 error(errno_value, "S%x write error on socket", c->tag);
38b8221f 117 if(c->r) {
8d8b8c1f 118 D(("cancel reader"));
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119 ev_reader_cancel(c->r);
120 c->r = 0;
121 }
8d8b8c1f 122 D(("done cancel reader"));
460b9539 123 }
38b8221f 124 c->w = 0;
75d64210 125 ev_report(ev);
0126692c 126 remove_connection(c);
460b9539 127 return 0;
128}
129
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130/** @brief Called when a conncetion's reader fails or is shut down
131 *
132 * If connection still has a writer then it is closed.
133 */
460b9539 134static int reader_error(ev_source attribute((unused)) *ev,
460b9539 135 int errno_value,
136 void *u) {
137 struct conn *c = u;
138
8d8b8c1f 139 D(("server reader_error S%x %d", c->tag, errno_value));
1563f6f6 140 error(errno_value, "S%x read error on socket", c->tag);
38b8221f
RK
141 if(c->w)
142 ev_writer_close(c->w);
143 c->w = 0;
144 c->r = 0;
768d7355 145 ev_report(ev);
0126692c 146 remove_connection(c);
460b9539 147 return 0;
148}
149
460b9539 150static int c_disable(struct conn *c, char **vec, int nvec) {
151 if(nvec == 0)
152 disable_playing(c->who);
153 else if(nvec == 1 && !strcmp(vec[0], "now"))
154 disable_playing(c->who);
155 else {
156 sink_writes(ev_writer_sink(c->w), "550 invalid argument\n");
157 return 1; /* completed */
158 }
159 sink_writes(ev_writer_sink(c->w), "250 OK\n");
160 return 1; /* completed */
161}
162
163static int c_enable(struct conn *c,
164 char attribute((unused)) **vec,
165 int attribute((unused)) nvec) {
166 enable_playing(c->who, c->ev);
167 /* Enable implicitly unpauses if there is nothing playing */
168 if(paused && !playing) resume_playing(c->who);
169 sink_writes(ev_writer_sink(c->w), "250 OK\n");
170 return 1; /* completed */
171}
172
173static int c_enabled(struct conn *c,
174 char attribute((unused)) **vec,
175 int attribute((unused)) nvec) {
176 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]);
177 return 1; /* completed */
178}
179
180static int c_play(struct conn *c, char **vec,
181 int attribute((unused)) nvec) {
182 const char *track;
183 struct queue_entry *q;
184
185 if(!trackdb_exists(vec[0])) {
186 sink_writes(ev_writer_sink(c->w), "550 track is not in database\n");
187 return 1;
188 }
189 if(!(track = trackdb_resolve(vec[0]))) {
190 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
191 return 1;
192 }
193 q = queue_add(track, c->who, WHERE_BEFORE_RANDOM);
194 queue_write();
195 /* If we added the first track, and something is playing, then prepare the
196 * new track. If nothing is playing then we don't bother as it wouldn't gain
197 * anything. */
198 if(q == qhead.next && playing)
199 prepare(c->ev, q);
81e440ce 200 sink_printf(ev_writer_sink(c->w), "252 %s\n", q->id);
460b9539 201 /* If the queue was empty but we are for some reason paused then
202 * unpause. */
203 if(!playing) resume_playing(0);
204 play(c->ev);
205 return 1; /* completed */
206}
207
208static int c_remove(struct conn *c, char **vec,
209 int attribute((unused)) nvec) {
210 struct queue_entry *q;
211
212 if(!(q = queue_find(vec[0]))) {
213 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
214 return 1;
215 }
938d8157 216 if(!right_removable(c->rights, c->who, q)) {
834e7c4a 217 error(0, "%s attempted remove but lacks required rights", c->who);
eb5dc014 218 sink_writes(ev_writer_sink(c->w),
b4a80f69 219 "510 Not authorized to remove that track\n");
eb5dc014 220 return 1;
460b9539 221 }
222 queue_remove(q, c->who);
223 /* De-prepare the track. */
224 abandon(c->ev, q);
49a773eb
RK
225 /* See about adding a new random track */
226 add_random_track(c->ev);
460b9539 227 /* Prepare whatever the next head track is. */
228 if(qhead.next != &qhead)
229 prepare(c->ev, qhead.next);
230 queue_write();
231 sink_writes(ev_writer_sink(c->w), "250 removed\n");
232 return 1; /* completed */
233}
234
235static int c_scratch(struct conn *c,
236 char **vec,
237 int nvec) {
238 if(!playing) {
239 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
240 return 1; /* completed */
241 }
eb5dc014
RK
242 /* TODO there is a bug here: if we specify an ID but it's not the currently
243 * playing track then you will get 550 if you weren't authorized to scratch
244 * the currently playing track. */
938d8157 245 if(!right_scratchable(c->rights, c->who, playing)) {
834e7c4a 246 error(0, "%s attempted scratch but lacks required rights", c->who);
eb5dc014 247 sink_writes(ev_writer_sink(c->w),
b4a80f69 248 "510 Not authorized to scratch that track\n");
eb5dc014 249 return 1;
460b9539 250 }
251 scratch(c->who, nvec == 1 ? vec[0] : 0);
252 /* If you scratch an unpaused track then it is automatically unpaused */
253 resume_playing(0);
254 sink_writes(ev_writer_sink(c->w), "250 scratched\n");
255 return 1; /* completed */
256}
257
258static int c_pause(struct conn *c,
259 char attribute((unused)) **vec,
260 int attribute((unused)) nvec) {
261 if(!playing) {
262 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
263 return 1; /* completed */
264 }
265 if(paused) {
266 sink_writes(ev_writer_sink(c->w), "250 already paused\n");
267 return 1; /* completed */
268 }
269 if(pause_playing(c->who) < 0)
270 sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n");
271 else
272 sink_writes(ev_writer_sink(c->w), "250 paused\n");
273 return 1;
274}
275
276static int c_resume(struct conn *c,
277 char attribute((unused)) **vec,
278 int attribute((unused)) nvec) {
279 if(!paused) {
280 sink_writes(ev_writer_sink(c->w), "250 not paused\n");
281 return 1; /* completed */
282 }
283 resume_playing(c->who);
284 sink_writes(ev_writer_sink(c->w), "250 paused\n");
285 return 1;
286}
287
288static int c_shutdown(struct conn *c,
289 char attribute((unused)) **vec,
290 int attribute((unused)) nvec) {
291 info("S%x shut down by %s", c->tag, c->who);
292 sink_writes(ev_writer_sink(c->w), "250 shutting down\n");
293 ev_writer_flush(c->w);
294 quit(c->ev);
295}
296
297static int c_reconfigure(struct conn *c,
298 char attribute((unused)) **vec,
299 int attribute((unused)) nvec) {
300 info("S%x reconfigure by %s", c->tag, c->who);
301 if(reconfigure(c->ev, 1))
302 sink_writes(ev_writer_sink(c->w), "550 error reading new config\n");
303 else
304 sink_writes(ev_writer_sink(c->w), "250 installed new config\n");
305 return 1; /* completed */
306}
307
dd9af5cb
RK
308static void finished_rescan(void *ru) {
309 struct conn *const c = ru;
310
311 sink_writes(ev_writer_sink(c->w), "250 rescan completed\n");
312 /* Turn this connection back on */
313 ev_reader_enable(c->r);
314}
315
316static void start_fresh_rescan(void *ru) {
317 struct conn *const c = ru;
318
319 if(trackdb_rescan_underway()) {
320 /* Some other waiter beat us to it. However in this case we're happy to
321 * piggyback; the requirement is that a new rescan be started, not that it
322 * was _our_ rescan. */
323 if(c->rescan_wait) {
324 /* We block until the rescan completes */
325 trackdb_add_rescanned(finished_rescan, c);
326 } else {
327 /* We report that the new rescan has started */
328 sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n");
329 /* Turn this connection back on */
330 ev_reader_enable(c->r);
331 }
332 } else {
333 /* We are the first connection to get a callback so we must start a
334 * rescan. */
335 if(c->rescan_wait) {
336 /* We want to block until the new rescan completes */
337 trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c);
338 } else {
339 /* We can report back immediately */
340 trackdb_rescan(c->ev, 1/*check*/, 0, 0);
341 sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n");
342 /* Turn this connection back on */
343 ev_reader_enable(c->r);
344 }
345 }
346}
347
460b9539 348static int c_rescan(struct conn *c,
dd9af5cb
RK
349 char **vec,
350 int nvec) {
d867af10 351 int flag_wait = 0, flag_fresh = 0, n;
dd9af5cb
RK
352
353 /* Parse flags */
354 for(n = 0; n < nvec; ++n) {
355 if(!strcmp(vec[n], "wait"))
d867af10 356 flag_wait = 1; /* wait for rescan to complete */
dd9af5cb
RK
357#if 0
358 /* Currently disabled because untested (and hard to test). */
359 else if(!strcmp(vec[n], "fresh"))
d867af10 360 flag_fresh = 1; /* don't piggyback underway rescan */
dd9af5cb
RK
361#endif
362 else {
363 sink_writes(ev_writer_sink(c->w), "550 unknown flag\n");
364 return 1; /* completed */
365 }
366 }
367 /* Report what was requested */
368 info("S%x rescan by %s (%s %s)", c->tag, c->who,
d867af10
RK
369 flag_wait ? "wait" : "",
370 flag_fresh ? "fresh" : "");
dd9af5cb 371 if(trackdb_rescan_underway()) {
d867af10 372 if(flag_fresh) {
dd9af5cb
RK
373 /* We want a fresh rescan but there is already one underway. Arrange a
374 * callback when it completes and then set off a new one. */
d867af10 375 c->rescan_wait = flag_wait;
dd9af5cb 376 trackdb_add_rescanned(start_fresh_rescan, c);
d867af10 377 if(flag_wait)
dd9af5cb
RK
378 return 0;
379 else {
380 sink_writes(ev_writer_sink(c->w), "250 rescan queued\n");
381 return 1;
382 }
383 } else {
384 /* There's a rescan underway, and it's acceptable to piggyback on it */
d867af10 385 if(flag_wait) {
dd9af5cb
RK
386 /* We want to block until completion. */
387 trackdb_add_rescanned(finished_rescan, c);
388 return 0;
389 } else {
390 /* We don't want to block. So we just report that things are in
391 * hand. */
392 sink_writes(ev_writer_sink(c->w), "250 rescan already underway\n");
393 return 1;
394 }
395 }
396 } else {
397 /* No rescan is underway. fresh is therefore irrelevant. */
d867af10 398 if(flag_wait) {
dd9af5cb
RK
399 /* We want to block until completion */
400 trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c);
401 return 0;
402 } else {
403 /* We don't want to block. */
404 trackdb_rescan(c->ev, 1/*check*/, 0, 0);
405 sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n");
406 return 1; /* completed */
407 }
408 }
460b9539 409}
410
411static int c_version(struct conn *c,
412 char attribute((unused)) **vec,
413 int attribute((unused)) nvec) {
414 /* VERSION had better only use the basic character set */
a05e4467 415 sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_short_version_string);
460b9539 416 return 1; /* completed */
417}
418
419static int c_playing(struct conn *c,
420 char attribute((unused)) **vec,
421 int attribute((unused)) nvec) {
422 if(playing) {
423 queue_fix_sofar(playing);
424 playing->expected = 0;
425 sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing));
426 } else
427 sink_printf(ev_writer_sink(c->w), "259 nothing playing\n");
428 return 1; /* completed */
429}
430
b12be54a 431static const char *connection_host(struct conn *c) {
460b9539 432 union {
433 struct sockaddr sa;
434 struct sockaddr_in in;
435 struct sockaddr_in6 in6;
436 } u;
437 socklen_t l;
b12be54a 438 int n;
460b9539 439 char host[1024];
440
460b9539 441 /* get connection data */
442 l = sizeof u;
443 if(getpeername(c->fd, &u.sa, &l) < 0) {
444 error(errno, "S%x error calling getpeername", c->tag);
b12be54a 445 return 0;
460b9539 446 }
447 if(c->l->pf != PF_UNIX) {
448 if((n = getnameinfo(&u.sa, l,
449 host, sizeof host, 0, 0, NI_NUMERICHOST))) {
450 error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n));
b12be54a 451 return 0;
460b9539 452 }
b12be54a 453 return xstrdup(host);
18e6d6e6 454 } else
b12be54a
RK
455 return "local";
456}
457
458static int c_user(struct conn *c,
459 char **vec,
460 int attribute((unused)) nvec) {
eb5dc014 461 struct kvp *k;
f0feb22e 462 const char *res, *host, *password;
eb5dc014 463 rights_type rights;
b12be54a
RK
464
465 if(c->who) {
466 sink_writes(ev_writer_sink(c->w), "530 already authenticated\n");
467 return 1;
468 }
469 /* get connection data */
470 if(!(host = connection_host(c))) {
471 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
472 return 1;
473 }
460b9539 474 /* find the user */
eb5dc014 475 k = trackdb_getuserinfo(vec[0]);
f0feb22e 476 /* reject nonexistent users */
eb5dc014
RK
477 if(!k) {
478 error(0, "S%x unknown user '%s' from %s", c->tag, vec[0], host);
479 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
480 return 1;
481 }
482 /* reject unconfirmed users */
483 if(kvp_get(k, "confirmation")) {
484 error(0, "S%x unconfirmed user '%s' from %s", c->tag, vec[0], host);
485 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
486 return 1;
487 }
488 password = kvp_get(k, "password");
489 if(!password) password = "";
0f55e905 490 if(parse_rights(kvp_get(k, "rights"), &rights, 1)) {
eb5dc014 491 error(0, "error parsing rights for %s", vec[0]);
18e6d6e6 492 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
493 return 1;
494 }
f0feb22e
RK
495 /* check whether the response is right */
496 res = authhash(c->nonce, sizeof c->nonce, password,
637fdea3 497 config->authorization_algorithm);
18e6d6e6 498 if(wideopen || (res && !strcmp(res, vec[1]))) {
499 c->who = vec[0];
eb5dc014 500 c->rights = rights;
18e6d6e6 501 /* currently we only bother logging remote connections */
30365519 502 if(strcmp(host, "local"))
18e6d6e6 503 info("S%x %s connected from %s", c->tag, vec[0], host);
30365519 504 else
eb5dc014 505 c->rights |= RIGHT__LOCAL;
18e6d6e6 506 sink_writes(ev_writer_sink(c->w), "230 OK\n");
507 return 1;
460b9539 508 }
509 /* oops, response was wrong */
18e6d6e6 510 info("S%x authentication failure for %s from %s", c->tag, vec[0], host);
460b9539 511 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
512 return 1;
513}
514
515static int c_recent(struct conn *c,
516 char attribute((unused)) **vec,
517 int attribute((unused)) nvec) {
518 const struct queue_entry *q;
519
520 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
521 for(q = phead.next; q != &phead; q = q->next)
522 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
523 sink_writes(ev_writer_sink(c->w), ".\n");
524 return 1; /* completed */
525}
526
527static int c_queue(struct conn *c,
528 char attribute((unused)) **vec,
529 int attribute((unused)) nvec) {
530 struct queue_entry *q;
531 time_t when = 0;
532 const char *l;
533 long length;
534
535 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
536 if(playing_is_enabled() && !paused) {
537 if(playing) {
538 queue_fix_sofar(playing);
539 if((l = trackdb_get(playing->track, "_length"))
540 && (length = atol(l))) {
541 time(&when);
542 when += length - playing->sofar + config->gap;
543 }
544 } else
545 /* Nothing is playing but playing is enabled, so whatever is
546 * first in the queue can be expected to start immediately. */
547 time(&when);
548 }
549 for(q = qhead.next; q != &qhead; q = q->next) {
550 /* fill in estimated start time */
551 q->expected = when;
552 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
553 /* update for next track */
554 if(when) {
555 if((l = trackdb_get(q->track, "_length"))
556 && (length = atol(l)))
557 when += length + config->gap;
558 else
559 when = 0;
560 }
561 }
562 sink_writes(ev_writer_sink(c->w), ".\n");
563 return 1; /* completed */
564}
565
566static int output_list(struct conn *c, char **vec) {
567 while(*vec)
568 sink_printf(ev_writer_sink(c->w), "%s\n", *vec++);
569 sink_writes(ev_writer_sink(c->w), ".\n");
570 return 1;
571}
572
573static int files_dirs(struct conn *c,
574 char **vec,
575 int nvec,
576 enum trackdb_listable what) {
577 const char *dir, *re, *errstr;
578 int erroffset;
579 pcre *rec;
580 char **fvec, *key;
581
582 switch(nvec) {
583 case 0: dir = 0; re = 0; break;
584 case 1: dir = vec[0]; re = 0; break;
585 case 2: dir = vec[0]; re = vec[1]; break;
586 default: abort();
587 }
588 /* A bit of a bodge to make sure the args don't trample on cache keys */
589 if(dir && strchr(dir, '\n')) {
590 sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n");
591 return 1;
592 }
593 if(re && strchr(re, '\n')) {
594 sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n");
595 return 1;
596 }
597 /* We bother eliminating "" because the web interface is relatively
598 * likely to send it */
599 if(re && *re) {
600 byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re);
601 fvec = (char **)cache_get(&cache_files_type, key);
602 if(fvec) {
603 /* Got a cache hit, don't store the answer in the cache */
604 key = 0;
605 ++cache_files_hits;
606 rec = 0; /* quieten compiler */
607 } else {
608 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
609 * in the cache. */
610 if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8,
611 &errstr, &erroffset, 0))) {
612 sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n",
613 errstr);
614 return 1;
615 }
616 /* It only counts as a miss if the regexp was valid. */
617 ++cache_files_misses;
618 }
619 } else {
620 /* No regexp, don't bother caching the result */
621 rec = 0;
622 key = 0;
623 fvec = 0;
624 }
625 if(!fvec) {
626 /* No cache hit (either because a miss, or because we did not look) so do
627 * the lookup */
628 if(dir && *dir)
629 fvec = trackdb_list(dir, 0, what, rec);
630 else
631 fvec = trackdb_list(0, 0, what, rec);
632 }
633 if(key)
634 /* Put the answer in the cache */
635 cache_put(&cache_files_type, key, fvec);
636 sink_writes(ev_writer_sink(c->w), "253 Listing follow\n");
637 return output_list(c, fvec);
638}
639
640static int c_files(struct conn *c,
641 char **vec,
642 int nvec) {
643 return files_dirs(c, vec, nvec, trackdb_files);
644}
645
646static int c_dirs(struct conn *c,
647 char **vec,
648 int nvec) {
649 return files_dirs(c, vec, nvec, trackdb_directories);
650}
651
652static int c_allfiles(struct conn *c,
653 char **vec,
654 int nvec) {
655 return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files);
656}
657
658static int c_get(struct conn *c,
659 char **vec,
660 int attribute((unused)) nvec) {
27ed5a69 661 const char *v, *track;
460b9539 662
27ed5a69
RK
663 if(!(track = trackdb_resolve(vec[0]))) {
664 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
665 return 1;
666 }
667 if(vec[1][0] != '_' && (v = trackdb_get(track, vec[1])))
7b32e917 668 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v));
460b9539 669 else
fb1bc1f5 670 sink_writes(ev_writer_sink(c->w), "555 not found\n");
460b9539 671 return 1;
672}
673
674static int c_length(struct conn *c,
675 char **vec,
676 int attribute((unused)) nvec) {
677 const char *track, *v;
678
679 if(!(track = trackdb_resolve(vec[0]))) {
680 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
681 return 1;
682 }
683 if((v = trackdb_get(track, "_length")))
7b32e917 684 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v));
460b9539 685 else
686 sink_writes(ev_writer_sink(c->w), "550 not found\n");
687 return 1;
688}
689
690static int c_set(struct conn *c,
691 char **vec,
692 int attribute((unused)) nvec) {
27ed5a69
RK
693 const char *track;
694
695 if(!(track = trackdb_resolve(vec[0]))) {
696 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
697 return 1;
698 }
699 if(vec[1][0] != '_' && !trackdb_set(track, vec[1], vec[2]))
460b9539 700 sink_writes(ev_writer_sink(c->w), "250 OK\n");
701 else
702 sink_writes(ev_writer_sink(c->w), "550 not found\n");
703 return 1;
704}
705
706static int c_prefs(struct conn *c,
707 char **vec,
708 int attribute((unused)) nvec) {
709 struct kvp *k;
27ed5a69 710 const char *track;
460b9539 711
27ed5a69
RK
712 if(!(track = trackdb_resolve(vec[0]))) {
713 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
714 return 1;
715 }
716 k = trackdb_get_all(track);
460b9539 717 sink_writes(ev_writer_sink(c->w), "253 prefs follow\n");
718 for(; k; k = k->next)
719 if(k->name[0] != '_') /* omit internal values */
720 sink_printf(ev_writer_sink(c->w),
721 " %s %s\n", quoteutf8(k->name), quoteutf8(k->value));
722 sink_writes(ev_writer_sink(c->w), ".\n");
723 return 1;
724}
725
726static int c_exists(struct conn *c,
727 char **vec,
728 int attribute((unused)) nvec) {
27ed5a69 729 /* trackdb_exists() does its own alias checking */
460b9539 730 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]);
731 return 1;
732}
733
734static void search_parse_error(const char *msg, void *u) {
735 *(const char **)u = msg;
736}
737
738static int c_search(struct conn *c,
739 char **vec,
740 int attribute((unused)) nvec) {
741 char **terms, **results;
742 int nterms, nresults, n;
743 const char *e = "unknown error";
744
745 /* This is a bit of a bodge. Initially it's there to make the eclient
746 * interface a bit more convenient to add searching to, but it has the more
747 * compelling advantage that if everything uses it, then interpretation of
748 * user-supplied search strings will be the same everywhere. */
749 if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) {
750 sink_printf(ev_writer_sink(c->w), "550 %s\n", e);
751 } else {
752 results = trackdb_search(terms, nterms, &nresults);
753 sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults);
754 for(n = 0; n < nresults; ++n)
755 sink_printf(ev_writer_sink(c->w), "%s\n", results[n]);
756 sink_writes(ev_writer_sink(c->w), ".\n");
757 }
758 return 1;
759}
760
761static int c_random_enable(struct conn *c,
762 char attribute((unused)) **vec,
763 int attribute((unused)) nvec) {
764 enable_random(c->who, c->ev);
765 /* Enable implicitly unpauses if there is nothing playing */
766 if(paused && !playing) resume_playing(c->who);
767 sink_writes(ev_writer_sink(c->w), "250 OK\n");
768 return 1; /* completed */
769}
770
771static int c_random_disable(struct conn *c,
772 char attribute((unused)) **vec,
773 int attribute((unused)) nvec) {
774 disable_random(c->who);
775 sink_writes(ev_writer_sink(c->w), "250 OK\n");
776 return 1; /* completed */
777}
778
779static int c_random_enabled(struct conn *c,
780 char attribute((unused)) **vec,
781 int attribute((unused)) nvec) {
782 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]);
783 return 1; /* completed */
784}
785
d6dde5a3
RK
786static void got_stats(char *stats, void *u) {
787 struct conn *const c = u;
788
789 sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats);
790 /* Now we can start processing commands again */
791 ev_reader_enable(c->r);
792}
793
460b9539 794static int c_stats(struct conn *c,
795 char attribute((unused)) **vec,
796 int attribute((unused)) nvec) {
d6dde5a3
RK
797 trackdb_stats_subprocess(c->ev, got_stats, c);
798 return 0; /* not yet complete */
460b9539 799}
800
801static int c_volume(struct conn *c,
802 char **vec,
803 int nvec) {
804 int l, r, set;
805 char lb[32], rb[32];
eb5dc014 806 rights_type rights;
460b9539 807
808 switch(nvec) {
809 case 0:
810 set = 0;
811 break;
812 case 1:
813 l = r = atoi(vec[0]);
814 set = 1;
815 break;
816 case 2:
817 l = atoi(vec[0]);
818 r = atoi(vec[1]);
819 set = 1;
820 break;
821 default:
822 abort();
823 }
eb5dc014
RK
824 rights = set ? RIGHT_VOLUME : RIGHT_READ;
825 if(!(c->rights & rights)) {
834e7c4a 826 error(0, "%s attempted to set volume but lacks required rights", c->who);
b4a80f69 827 sink_writes(ev_writer_sink(c->w), "510 Prohibited\n");
eb5dc014
RK
828 return 1;
829 }
3c499fe7 830 if(mixer_control(-1/*as configured*/, &l, &r, set))
460b9539 831 sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n");
832 else {
833 sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r);
834 if(l != volume_left || r != volume_right) {
835 volume_left = l;
836 volume_right = r;
837 snprintf(lb, sizeof lb, "%d", l);
838 snprintf(rb, sizeof rb, "%d", r);
839 eventlog("volume", lb, rb, (char *)0);
840 }
841 }
842 return 1;
843}
844
397ef7bb
RK
845/** @brief Called when data arrives on a log connection
846 *
847 * We just discard all such data. The client may occasionally send data as a
848 * keepalive.
849 */
850static int logging_reader_callback(ev_source attribute((unused)) *ev,
460b9539 851 ev_reader *reader,
397ef7bb 852 void attribute((unused)) *ptr,
460b9539 853 size_t bytes,
397ef7bb
RK
854 int attribute((unused)) eof,
855 void attribute((unused)) *u) {
460b9539 856 struct conn *c = u;
857
397ef7bb
RK
858 ev_reader_consume(reader, bytes);
859 if(eof) {
860 /* Oops, that's all for now */
8d8b8c1f 861 D(("logging reader eof"));
397ef7bb 862 if(c->w) {
8d8b8c1f 863 D(("close writer"));
397ef7bb
RK
864 ev_writer_close(c->w);
865 c->w = 0;
866 }
867 c->r = 0;
0126692c 868 remove_connection(c);
f6033c46 869 }
397ef7bb 870 return 0;
460b9539 871}
872
873static void logclient(const char *msg, void *user) {
874 struct conn *c = user;
875
f6033c46
RK
876 if(!c->w || !c->r) {
877 /* This connection has gone up in smoke for some reason */
878 eventlog_remove(c->lo);
879 return;
880 }
460b9539 881 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n",
882 (uintmax_t)time(0), msg);
883}
884
885static int c_log(struct conn *c,
886 char attribute((unused)) **vec,
887 int attribute((unused)) nvec) {
888 time_t now;
889
890 sink_writes(ev_writer_sink(c->w), "254 OK\n");
891 /* pump out initial state */
892 time(&now);
893 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
894 (uintmax_t)now,
895 playing_is_enabled() ? "enable_play" : "disable_play");
896 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
897 (uintmax_t)now,
898 random_is_enabled() ? "enable_random" : "disable_random");
899 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
900 (uintmax_t)now,
901 paused ? "pause" : "resume");
5abe307a
RK
902 if(playing)
903 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n",
904 (uintmax_t)now);
df44d69b
RK
905 /* Initial volume */
906 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n",
907 (uintmax_t)now, volume_left, volume_right);
460b9539 908 c->lo = xmalloc(sizeof *c->lo);
909 c->lo->fn = logclient;
910 c->lo->user = c;
911 eventlog_add(c->lo);
912 c->reader = logging_reader_callback;
913 return 0;
914}
915
eb5dc014
RK
916/** @brief Test whether a move is allowed
917 * @param c Connection
918 * @param qs List of IDs on queue
919 * @param nqs Number of IDs
920 * @return 0 if move is prohibited, non-0 if it is allowed
921 */
922static int has_move_rights(struct conn *c, struct queue_entry **qs, int nqs) {
eb5dc014
RK
923 for(; nqs > 0; ++qs, --nqs) {
924 struct queue_entry *const q = *qs;
925
938d8157 926 if(!right_movable(c->rights, c->who, q))
927 return 0;
eb5dc014 928 }
938d8157 929 return 1;
eb5dc014
RK
930}
931
460b9539 932static int c_move(struct conn *c,
933 char **vec,
934 int attribute((unused)) nvec) {
935 struct queue_entry *q;
936 int n;
937
460b9539 938 if(!(q = queue_find(vec[0]))) {
939 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
940 return 1;
941 }
eb5dc014 942 if(!has_move_rights(c, &q, 1)) {
834e7c4a 943 error(0, "%s attempted move but lacks required rights", c->who);
eb5dc014 944 sink_writes(ev_writer_sink(c->w),
b4a80f69 945 "510 Not authorized to move that track\n");
eb5dc014
RK
946 return 1;
947 }
460b9539 948 n = queue_move(q, atoi(vec[1]), c->who);
460b9539 949 sink_printf(ev_writer_sink(c->w), "252 %d\n", n);
950 /* If we've moved to the head of the queue then prepare the track. */
951 if(q == qhead.next)
952 prepare(c->ev, q);
953 return 1;
954}
955
956static int c_moveafter(struct conn *c,
957 char **vec,
958 int attribute((unused)) nvec) {
959 struct queue_entry *q, **qs;
960 int n;
961
460b9539 962 if(vec[0][0]) {
963 if(!(q = queue_find(vec[0]))) {
964 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
965 return 1;
966 }
967 } else
968 q = 0;
969 ++vec;
970 --nvec;
971 qs = xcalloc(nvec, sizeof *qs);
972 for(n = 0; n < nvec; ++n)
973 if(!(qs[n] = queue_find(vec[n]))) {
974 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
975 return 1;
976 }
eb5dc014 977 if(!has_move_rights(c, qs, nvec)) {
834e7c4a 978 error(0, "%s attempted moveafter but lacks required rights", c->who);
eb5dc014 979 sink_writes(ev_writer_sink(c->w),
b4a80f69 980 "510 Not authorized to move those tracks\n");
eb5dc014
RK
981 return 1;
982 }
460b9539 983 queue_moveafter(q, nvec, qs, c->who);
460b9539 984 sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n");
985 /* If we've moved to the head of the queue then prepare the track. */
986 if(q == qhead.next)
987 prepare(c->ev, q);
988 return 1;
989}
990
991static int c_part(struct conn *c,
992 char **vec,
993 int attribute((unused)) nvec) {
27ed5a69
RK
994 const char *track;
995
996 if(!(track = trackdb_resolve(vec[0]))) {
997 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
998 return 1;
999 }
460b9539 1000 sink_printf(ev_writer_sink(c->w), "252 %s\n",
27ed5a69 1001 quoteutf8(trackdb_getpart(track, vec[1], vec[2])));
460b9539 1002 return 1;
1003}
1004
1005static int c_resolve(struct conn *c,
1006 char **vec,
1007 int attribute((unused)) nvec) {
1008 const char *track;
1009
1010 if(!(track = trackdb_resolve(vec[0]))) {
1011 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
1012 return 1;
1013 }
7b32e917 1014 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(track));
460b9539 1015 return 1;
1016}
1017
1018static int c_tags(struct conn *c,
1019 char attribute((unused)) **vec,
1020 int attribute((unused)) nvec) {
1021 char **tags = trackdb_alltags();
1022
1023 sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n");
1024 while(*tags) {
1025 sink_printf(ev_writer_sink(c->w), "%s%s\n",
1026 **tags == '.' ? "." : "", *tags);
1027 ++tags;
1028 }
1029 sink_writes(ev_writer_sink(c->w), ".\n");
1030 return 1; /* completed */
460b9539 1031}
1032
1033static int c_set_global(struct conn *c,
1034 char **vec,
1035 int attribute((unused)) nvec) {
f9635e06
RK
1036 if(vec[0][0] == '_') {
1037 sink_writes(ev_writer_sink(c->w), "550 cannot set internal global preferences\n");
1038 return 1;
1039 }
460b9539 1040 trackdb_set_global(vec[0], vec[1], c->who);
1041 sink_printf(ev_writer_sink(c->w), "250 OK\n");
1042 return 1;
1043}
1044
1045static int c_get_global(struct conn *c,
1046 char **vec,
1047 int attribute((unused)) nvec) {
1048 const char *s = trackdb_get_global(vec[0]);
1049
1050 if(s)
7b32e917 1051 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(s));
460b9539 1052 else
fb1bc1f5 1053 sink_writes(ev_writer_sink(c->w), "555 not found\n");
460b9539 1054 return 1;
1055}
1056
7858930d 1057static int c_nop(struct conn *c,
1058 char attribute((unused)) **vec,
1059 int attribute((unused)) nvec) {
1060 sink_printf(ev_writer_sink(c->w), "250 Quack\n");
1061 return 1;
1062}
1063
2a10b70b
RK
1064static int c_new(struct conn *c,
1065 char **vec,
1066 int nvec) {
d742bb47
RK
1067 int max, n;
1068 char **tracks;
2a10b70b 1069
d742bb47
RK
1070 if(nvec > 0)
1071 max = atoi(vec[0]);
1072 else
1073 max = INT_MAX;
1074 if(max <= 0 || max > config->new_max)
1075 max = config->new_max;
1076 tracks = trackdb_new(0, max);
2a10b70b 1077 sink_printf(ev_writer_sink(c->w), "253 New track list follows\n");
d742bb47 1078 n = 0;
2a10b70b
RK
1079 while(*tracks) {
1080 sink_printf(ev_writer_sink(c->w), "%s%s\n",
1081 **tracks == '.' ? "." : "", *tracks);
1082 ++tracks;
1083 }
1084 sink_writes(ev_writer_sink(c->w), ".\n");
1085 return 1; /* completed */
1086
1087}
1088
ca831831
RK
1089static int c_rtp_address(struct conn *c,
1090 char attribute((unused)) **vec,
1091 int attribute((unused)) nvec) {
bd8895a8 1092 if(config->api == BACKEND_NETWORK) {
ca831831
RK
1093 sink_printf(ev_writer_sink(c->w), "252 %s %s\n",
1094 quoteutf8(config->broadcast.s[0]),
1095 quoteutf8(config->broadcast.s[1]));
1096 } else
1097 sink_writes(ev_writer_sink(c->w), "550 No RTP\n");
1098 return 1;
1099}
b12be54a
RK
1100
1101static int c_cookie(struct conn *c,
1102 char **vec,
1103 int attribute((unused)) nvec) {
1104 const char *host;
1105 char *user;
eb5dc014 1106 rights_type rights;
b12be54a
RK
1107
1108 /* Can't log in twice on the same connection */
1109 if(c->who) {
1110 sink_writes(ev_writer_sink(c->w), "530 already authenticated\n");
1111 return 1;
1112 }
1113 /* Get some kind of peer identifcation */
1114 if(!(host = connection_host(c))) {
1115 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
1116 return 1;
1117 }
1118 /* Check the cookie */
eb5dc014 1119 user = verify_cookie(vec[0], &rights);
b12be54a
RK
1120 if(!user) {
1121 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
1122 return 1;
1123 }
1124 /* Log in */
e48c28bb 1125 c->who = user;
b12be54a 1126 c->cookie = vec[0];
eb5dc014 1127 c->rights = rights;
30365519 1128 if(strcmp(host, "local"))
b12be54a 1129 info("S%x %s connected with cookie from %s", c->tag, user, host);
30365519 1130 else
eb5dc014 1131 c->rights |= RIGHT__LOCAL;
0227f67d
RK
1132 /* Response contains username so client knows who they are acting as */
1133 sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user));
b12be54a
RK
1134 return 1;
1135}
1136
1137static int c_make_cookie(struct conn *c,
1138 char attribute((unused)) **vec,
1139 int attribute((unused)) nvec) {
1140 const char *cookie = make_cookie(c->who);
1141
1142 if(cookie)
eb5dc014 1143 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cookie));
b12be54a
RK
1144 else
1145 sink_writes(ev_writer_sink(c->w), "550 Cannot create cookie\n");
1146 return 1;
1147}
1148
1149static int c_revoke(struct conn *c,
1150 char attribute((unused)) **vec,
1151 int attribute((unused)) nvec) {
1152 if(c->cookie) {
1153 revoke_cookie(c->cookie);
1154 sink_writes(ev_writer_sink(c->w), "250 OK\n");
1155 } else
1156 sink_writes(ev_writer_sink(c->w), "550 Did not log in with cookie\n");
1157 return 1;
1158}
1159
f0feb22e
RK
1160static int c_adduser(struct conn *c,
1161 char **vec,
0f55e905
RK
1162 int nvec) {
1163 const char *rights;
1164
810b8083 1165 if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) {
39e7dcfb 1166 error(0, "S%x: remote adduser", c->tag);
810b8083
RK
1167 sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n");
1168 return 1;
1169 }
0f55e905
RK
1170 if(nvec > 2) {
1171 rights = vec[2];
1172 if(parse_rights(vec[2], 0, 1)) {
1173 sink_writes(ev_writer_sink(c->w), "550 Invalid rights list\n");
1174 return -1;
1175 }
1176 } else
1177 rights = config->default_rights;
1178 if(trackdb_adduser(vec[0], vec[1], rights,
ba39faf6 1179 0/*email*/, 0/*confirmation*/))
f0feb22e
RK
1180 sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n");
1181 else
1182 sink_writes(ev_writer_sink(c->w), "250 User created\n");
1183 return 1;
1184}
1185
1186static int c_deluser(struct conn *c,
1187 char **vec,
1188 int attribute((unused)) nvec) {
0126692c 1189 struct conn *d;
1190
810b8083 1191 if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) {
39e7dcfb 1192 error(0, "S%x: remote deluser", c->tag);
810b8083
RK
1193 sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n");
1194 return 1;
1195 }
0126692c 1196 if(trackdb_deluser(vec[0])) {
ba39faf6 1197 sink_writes(ev_writer_sink(c->w), "550 Cannot delete user\n");
0126692c 1198 return 1;
1199 }
1200 /* Zap connections belonging to deleted user */
1201 for(d = connections; d; d = d->next)
1202 if(!strcmp(d->who, vec[0]))
1203 d->rights = 0;
1204 sink_writes(ev_writer_sink(c->w), "250 User deleted\n");
f0feb22e
RK
1205 return 1;
1206}
1207
1208static int c_edituser(struct conn *c,
5df73aeb 1209 char **vec,
f0feb22e 1210 int attribute((unused)) nvec) {
0126692c 1211 struct conn *d;
1212
810b8083 1213 if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) {
39e7dcfb 1214 error(0, "S%x: remote edituser", c->tag);
810b8083
RK
1215 sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n");
1216 return 1;
1217 }
eb5dc014
RK
1218 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1219 * address and password. */
1220 if((c->rights & RIGHT_ADMIN)
5df73aeb
RK
1221 || (!strcmp(c->who, vec[0])
1222 && (!strcmp(vec[1], "email")
1223 || !strcmp(vec[1], "password")))) {
0126692c 1224 if(trackdb_edituserinfo(vec[0], vec[1], vec[2])) {
5df73aeb 1225 sink_writes(ev_writer_sink(c->w), "550 Failed to change setting\n");
0126692c 1226 return 1;
1227 }
1228 if(!strcmp(vec[1], "password")) {
1229 /* Zap all connections for this user after a password change */
1230 for(d = connections; d; d = d->next)
1231 if(!strcmp(d->who, vec[0]))
1232 d->rights = 0;
1233 } else if(!strcmp(vec[1], "rights")) {
1234 /* Update rights for this user */
1235 rights_type r;
1236
d3369bca 1237 if(parse_rights(vec[2], &r, 1))
0126692c 1238 for(d = connections; d; d = d->next)
1239 if(!strcmp(d->who, vec[0]))
1240 d->rights = r;
1241 }
1242 sink_writes(ev_writer_sink(c->w), "250 OK\n");
834e7c4a 1243 } else {
1244 error(0, "%s attempted edituser but lacks required rights", c->who);
b4a80f69 1245 sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n");
834e7c4a 1246 }
f0feb22e
RK
1247 return 1;
1248}
1249
1250static int c_userinfo(struct conn *c,
1251 char attribute((unused)) **vec,
1252 int attribute((unused)) nvec) {
5df73aeb
RK
1253 struct kvp *k;
1254 const char *value;
eb5dc014 1255
39e7dcfb
RK
1256 /* We allow remote querying of rights so that clients can figure out what
1257 * they're allowed to do */
1258 if(!config->remote_userman
1259 && !(c->rights & RIGHT__LOCAL)
1260 && strcmp(vec[1], "rights")) {
1261 error(0, "S%x: remote userinfo %s %s", c->tag, vec[0], vec[1]);
810b8083
RK
1262 sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n");
1263 return 1;
1264 }
eb5dc014 1265 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
29f5fbd2 1266 * address and rights list. */
eb5dc014 1267 if((c->rights & RIGHT_ADMIN)
5df73aeb
RK
1268 || (!strcmp(c->who, vec[0])
1269 && (!strcmp(vec[1], "email")
1270 || !strcmp(vec[1], "rights")))) {
1271 if((k = trackdb_getuserinfo(vec[0])))
1272 if((value = kvp_get(k, vec[1])))
1273 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(value));
1274 else
1275 sink_writes(ev_writer_sink(c->w), "555 Not set\n");
1276 else
1277 sink_writes(ev_writer_sink(c->w), "550 No such user\n");
834e7c4a 1278 } else {
1279 error(0, "%s attempted userinfo but lacks required rights", c->who);
b4a80f69 1280 sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n");
834e7c4a 1281 }
f0feb22e
RK
1282 return 1;
1283}
1284
c3be4f19
RK
1285static int c_users(struct conn *c,
1286 char attribute((unused)) **vec,
1287 int attribute((unused)) nvec) {
1288 /* TODO de-dupe with c_tags */
1289 char **users = trackdb_listusers();
1290
1291 sink_writes(ev_writer_sink(c->w), "253 User list follows\n");
1292 while(*users) {
1293 sink_printf(ev_writer_sink(c->w), "%s%s\n",
1294 **users == '.' ? "." : "", *users);
1295 ++users;
1296 }
1297 sink_writes(ev_writer_sink(c->w), ".\n");
1298 return 1; /* completed */
1299}
1300
86e3aea7 1301/** @brief Base64 mapping table for confirmation strings
1302 *
1303 * This is used with generic_to_base64() and generic_base64(). We cannot use
1304 * the MIME table as that contains '+' and '=' which get quoted when
1305 * URL-encoding. (The CGI still does the URL encoding but it is desirable to
1306 * avoid it being necessary.)
1307 */
1308static const char confirm_base64_table[] =
1309 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/.*";
1310
ba39faf6
RK
1311static int c_register(struct conn *c,
1312 char **vec,
1313 int attribute((unused)) nvec) {
1314 char *buf, *cs;
1315 size_t bufsize;
1316 int offset;
1317
1318 /* The confirmation string is base64(username;nonce) */
10114017 1319 bufsize = strlen(vec[0]) + CONFIRM_SIZE + 2;
ba39faf6
RK
1320 buf = xmalloc_noptr(bufsize);
1321 offset = byte_snprintf(buf, bufsize, "%s;", vec[0]);
10114017 1322 gcry_randomize(buf + offset, CONFIRM_SIZE, GCRY_STRONG_RANDOM);
86e3aea7 1323 cs = generic_to_base64((uint8_t *)buf, offset + CONFIRM_SIZE,
1324 confirm_base64_table);
ba39faf6
RK
1325 if(trackdb_adduser(vec[0], vec[1], config->default_rights, vec[2], cs))
1326 sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n");
1327 else
1328 sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cs));
1329 return 1;
1330}
1331
1332static int c_confirm(struct conn *c,
1333 char **vec,
1334 int attribute((unused)) nvec) {
1335 size_t nuser;
1336 char *user, *sep;
30365519 1337 rights_type rights;
1338 const char *host;
ba39faf6 1339
30365519 1340 /* Get some kind of peer identifcation */
1341 if(!(host = connection_host(c))) {
1342 sink_writes(ev_writer_sink(c->w), "530 Authentication failure\n");
1343 return 1;
1344 }
86e3aea7 1345 if(!(user = generic_base64(vec[0], &nuser, confirm_base64_table))
ba39faf6
RK
1346 || !(sep = memchr(user, ';', nuser))) {
1347 sink_writes(ev_writer_sink(c->w), "550 Malformed confirmation string\n");
1348 return 1;
1349 }
1350 *sep = 0;
30365519 1351 if(trackdb_confirm(user, vec[0], &rights))
ba39faf6 1352 sink_writes(ev_writer_sink(c->w), "550 Incorrect confirmation string\n");
30365519 1353 else {
1354 c->who = user;
1355 c->cookie = 0;
1356 c->rights = rights;
1357 if(strcmp(host, "local"))
1358 info("S%x %s confirmed from %s", c->tag, user, host);
1359 else
1360 c->rights |= RIGHT__LOCAL;
1361 /* Response contains username so client knows who they are acting as */
1362 sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user));
1363 }
ba39faf6
RK
1364 return 1;
1365}
6207d2f3 1366
1367static int sent_reminder(ev_source attribute((unused)) *ev,
1368 pid_t attribute((unused)) pid,
1369 int status,
1370 const struct rusage attribute((unused)) *rusage,
1371 void *u) {
1372 struct conn *const c = u;
1373
1374 /* Tell the client what went down */
1375 if(!status) {
1376 sink_writes(ev_writer_sink(c->w), "250 OK\n");
1377 } else {
1378 error(0, "reminder subprocess %s", wstat(status));
1379 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1380 }
1381 /* Re-enable this connection */
1382 ev_reader_enable(c->r);
1383 return 0;
1384}
1385
1386static int c_reminder(struct conn *c,
1387 char **vec,
1388 int attribute((unused)) nvec) {
1389 struct kvp *k;
1390 const char *password, *email, *text, *encoding, *charset, *content_type;
1391 const time_t *last;
1392 time_t now;
1393 pid_t pid;
1394
1395 static hash *last_reminder;
1396
1397 if(!config->mail_sender) {
1398 error(0, "cannot send password reminders because mail_sender not set");
1399 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1400 return 1;
1401 }
1402 if(!(k = trackdb_getuserinfo(vec[0]))) {
1403 error(0, "reminder for user '%s' who does not exist", vec[0]);
1404 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1405 return 1;
1406 }
1407 if(!(email = kvp_get(k, "email"))
1408 || !strchr(email, '@')) {
1409 error(0, "user '%s' has no valid email address", vec[0]);
1410 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1411 return 1;
1412 }
1413 if(!(password = kvp_get(k, "password"))
1414 || !*password) {
1415 error(0, "user '%s' has no password", vec[0]);
1416 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1417 return 1;
1418 }
1419 /* Rate-limit reminders. This hash is bounded in size by the number of
1420 * users. If this is actually a problem for anyone then we can periodically
1421 * clean it. */
1422 if(!last_reminder)
1423 last_reminder = hash_new(sizeof (time_t));
1424 last = hash_find(last_reminder, vec[0]);
1425 time(&now);
1426 if(last && now < *last + config->reminder_interval) {
1427 error(0, "sent a password reminder to '%s' too recently", vec[0]);
1428 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1429 return 1;
1430 }
1431 /* Send the reminder */
1432 /* TODO this should be templatized and to some extent merged with
1433 * the code in act_register() */
1434 byte_xasprintf((char **)&text,
1435"Someone requested that you be sent a reminder of your DisOrder password.\n"
1436"Your password is:\n"
1437"\n"
1438" %s\n", password);
1439 if(!(text = mime_encode_text(text, &charset, &encoding)))
1440 fatal(0, "cannot encode email");
1441 byte_xasprintf((char **)&content_type, "text/plain;charset=%s",
1442 quote822(charset, 0));
1443 pid = sendmail_subprocess("", config->mail_sender, email,
1444 "DisOrder password reminder",
1445 encoding, content_type, text);
1446 if(pid < 0) {
1447 sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n");
1448 return 1;
1449 }
1450 hash_add(last_reminder, vec[0], &now, HASH_INSERT_OR_REPLACE);
1451 info("sending a passsword reminder to user '%s'", vec[0]);
1452 /* We can only continue when the subprocess finishes */
1453 ev_child(c->ev, pid, 0, sent_reminder, c);
1454 return 0;
1455}
1456
2b33c4cf
RK
1457static int c_schedule_list(struct conn *c,
1458 char attribute((unused)) **vec,
1459 int attribute((unused)) nvec) {
1460 char **ids = schedule_list(0);
1461 sink_writes(ev_writer_sink(c->w), "253 ID list follows\n");
1462 while(*ids)
1463 sink_printf(ev_writer_sink(c->w), "%s\n", *ids++);
1464 sink_writes(ev_writer_sink(c->w), ".\n");
1465 return 1; /* completed */
1466}
1467
1468static int c_schedule_get(struct conn *c,
1469 char **vec,
1470 int attribute((unused)) nvec) {
1471 struct kvp *actiondata = schedule_get(vec[0]), *k;
1472
1473 if(!actiondata) {
1474 sink_writes(ev_writer_sink(c->w), "555 No such event\n");
1475 return 1; /* completed */
1476 }
1477 /* Scheduled events are public information. Anyone with RIGHT_READ can see
1478 * them. */
1479 sink_writes(ev_writer_sink(c->w), "253 Event information follows\n");
1480 for(k = actiondata; k; k = k->next)
1481 sink_printf(ev_writer_sink(c->w), " %s %s\n",
1482 quoteutf8(k->name), quoteutf8(k->value));
1483 sink_writes(ev_writer_sink(c->w), ".\n");
1484 return 1; /* completed */
1485}
1486
1487static int c_schedule_del(struct conn *c,
1488 char **vec,
1489 int attribute((unused)) nvec) {
1490 struct kvp *actiondata = schedule_get(vec[0]);
1491
1492 if(!actiondata) {
1493 sink_writes(ev_writer_sink(c->w), "555 No such event\n");
1494 return 1; /* completed */
1495 }
1496 /* If you have admin rights you can delete anything. If you don't then you
1497 * can only delete your own scheduled events. */
1498 if(!(c->rights & RIGHT_ADMIN)) {
1499 const char *who = kvp_get(actiondata, "who");
1500
1501 if(!who || !c->who || strcmp(who, c->who)) {
1502 sink_writes(ev_writer_sink(c->w), "551 Not authorized\n");
1503 return 1; /* completed */
1504 }
1505 }
1506 if(schedule_del(vec[0]))
1507 sink_writes(ev_writer_sink(c->w), "550 Could not delete scheduled event\n");
1508 else
1509 sink_writes(ev_writer_sink(c->w), "250 Deleted\n");
1510 return 1; /* completed */
1511}
1512
1513static int c_schedule_add(struct conn *c,
1514 char **vec,
1515 int nvec) {
1516 struct kvp *actiondata = 0;
067eeb5f 1517 const char *id;
2b33c4cf
RK
1518
1519 /* Standard fields */
1520 kvp_set(&actiondata, "who", c->who);
1521 kvp_set(&actiondata, "when", vec[0]);
1522 kvp_set(&actiondata, "priority", vec[1]);
1523 kvp_set(&actiondata, "action", vec[2]);
1524 /* Action-dependent fields */
1525 if(!strcmp(vec[2], "play")) {
1526 if(nvec != 4) {
1527 sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n");
1528 return 1;
1529 }
1530 if(!trackdb_exists(vec[3])) {
1531 sink_writes(ev_writer_sink(c->w), "550 Track is not in database\n");
1532 return 1;
1533 }
1534 kvp_set(&actiondata, "track", vec[3]);
1535 } else if(!strcmp(vec[2], "set-global")) {
1536 if(nvec < 4 || nvec > 5) {
1537 sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n");
1538 return 1;
1539 }
1540 kvp_set(&actiondata, "key", vec[3]);
1541 if(nvec > 4)
1542 kvp_set(&actiondata, "value", vec[4]);
1543 } else {
1544 sink_writes(ev_writer_sink(c->w), "550 Unknown action\n");
1545 return 1;
1546 }
1547 /* schedule_add() checks user rights */
1548 id = schedule_add(c->ev, actiondata);
1549 if(!id)
1550 sink_writes(ev_writer_sink(c->w), "550 Cannot add scheduled event\n");
1551 else
1552 sink_printf(ev_writer_sink(c->w), "252 %s\n", id);
1553 return 1;
1554}
1555
460b9539 1556static const struct command {
eb5dc014 1557 /** @brief Command name */
460b9539 1558 const char *name;
eb5dc014
RK
1559
1560 /** @brief Minimum number of arguments */
1561 int minargs;
1562
1563 /** @brief Maximum number of arguments */
1564 int maxargs;
1565
1566 /** @brief Function to process command */
460b9539 1567 int (*fn)(struct conn *, char **, int);
eb5dc014
RK
1568
1569 /** @brief Rights required to execute command
1570 *
1571 * 0 means that the command can be issued without logging in. If multiple
1572 * bits are listed here any of those rights will do.
1573 */
1574 rights_type rights;
460b9539 1575} commands[] = {
0f55e905 1576 { "adduser", 2, 3, c_adduser, RIGHT_ADMIN|RIGHT__LOCAL },
eb5dc014 1577 { "allfiles", 0, 2, c_allfiles, RIGHT_READ },
ba39faf6 1578 { "confirm", 1, 1, c_confirm, 0 },
b12be54a 1579 { "cookie", 1, 1, c_cookie, 0 },
eb5dc014
RK
1580 { "deluser", 1, 1, c_deluser, RIGHT_ADMIN|RIGHT__LOCAL },
1581 { "dirs", 0, 2, c_dirs, RIGHT_READ },
1582 { "disable", 0, 1, c_disable, RIGHT_GLOBAL_PREFS },
1583 { "edituser", 3, 3, c_edituser, RIGHT_ADMIN|RIGHT_USERINFO },
1584 { "enable", 0, 0, c_enable, RIGHT_GLOBAL_PREFS },
1585 { "enabled", 0, 0, c_enabled, RIGHT_READ },
1586 { "exists", 1, 1, c_exists, RIGHT_READ },
1587 { "files", 0, 2, c_files, RIGHT_READ },
1588 { "get", 2, 2, c_get, RIGHT_READ },
1589 { "get-global", 1, 1, c_get_global, RIGHT_READ },
1590 { "length", 1, 1, c_length, RIGHT_READ },
1591 { "log", 0, 0, c_log, RIGHT_READ },
1592 { "make-cookie", 0, 0, c_make_cookie, RIGHT_READ },
1593 { "move", 2, 2, c_move, RIGHT_MOVE__MASK },
1594 { "moveafter", 1, INT_MAX, c_moveafter, RIGHT_MOVE__MASK },
1595 { "new", 0, 1, c_new, RIGHT_READ },
1596 { "nop", 0, 0, c_nop, 0 },
1597 { "part", 3, 3, c_part, RIGHT_READ },
1598 { "pause", 0, 0, c_pause, RIGHT_PAUSE },
1599 { "play", 1, 1, c_play, RIGHT_PLAY },
1600 { "playing", 0, 0, c_playing, RIGHT_READ },
1601 { "prefs", 1, 1, c_prefs, RIGHT_READ },
1602 { "queue", 0, 0, c_queue, RIGHT_READ },
1603 { "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS },
1604 { "random-enable", 0, 0, c_random_enable, RIGHT_GLOBAL_PREFS },
1605 { "random-enabled", 0, 0, c_random_enabled, RIGHT_READ },
1606 { "recent", 0, 0, c_recent, RIGHT_READ },
1607 { "reconfigure", 0, 0, c_reconfigure, RIGHT_ADMIN },
ba39faf6 1608 { "register", 3, 3, c_register, RIGHT_REGISTER|RIGHT__LOCAL },
6207d2f3 1609 { "reminder", 1, 1, c_reminder, RIGHT__LOCAL },
eb5dc014 1610 { "remove", 1, 1, c_remove, RIGHT_REMOVE__MASK },
dd9af5cb 1611 { "rescan", 0, INT_MAX, c_rescan, RIGHT_RESCAN },
eb5dc014
RK
1612 { "resolve", 1, 1, c_resolve, RIGHT_READ },
1613 { "resume", 0, 0, c_resume, RIGHT_PAUSE },
1614 { "revoke", 0, 0, c_revoke, RIGHT_READ },
1615 { "rtp-address", 0, 0, c_rtp_address, 0 },
2b33c4cf
RK
1616 { "schedule-add", 3, INT_MAX, c_schedule_add, RIGHT_READ },
1617 { "schedule-del", 1, 1, c_schedule_del, RIGHT_READ },
1618 { "schedule-get", 1, 1, c_schedule_get, RIGHT_READ },
1619 { "schedule-list", 0, 0, c_schedule_list, RIGHT_READ },
eb5dc014
RK
1620 { "scratch", 0, 1, c_scratch, RIGHT_SCRATCH__MASK },
1621 { "search", 1, 1, c_search, RIGHT_READ },
1622 { "set", 3, 3, c_set, RIGHT_PREFS, },
1623 { "set-global", 2, 2, c_set_global, RIGHT_GLOBAL_PREFS },
1624 { "shutdown", 0, 0, c_shutdown, RIGHT_ADMIN },
1625 { "stats", 0, 0, c_stats, RIGHT_READ },
1626 { "tags", 0, 0, c_tags, RIGHT_READ },
1627 { "unset", 2, 2, c_set, RIGHT_PREFS },
1628 { "unset-global", 1, 1, c_set_global, RIGHT_GLOBAL_PREFS },
460b9539 1629 { "user", 2, 2, c_user, 0 },
eb5dc014
RK
1630 { "userinfo", 2, 2, c_userinfo, RIGHT_READ },
1631 { "users", 0, 0, c_users, RIGHT_READ },
1632 { "version", 0, 0, c_version, RIGHT_READ },
1633 { "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME }
460b9539 1634};
1635
1636static void command_error(const char *msg, void *u) {
1637 struct conn *c = u;
1638
1639 sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg);
1640}
1641
1642/* process a command. Return 1 if complete, 0 if incomplete. */
1643static int command(struct conn *c, char *line) {
1644 char **vec;
1645 int nvec, n;
1646
1647 D(("server command %s", line));
f9635e06
RK
1648 /* We force everything into NFC as early as possible */
1649 if(!(line = utf8_compose_canon(line, strlen(line), 0))) {
1650 sink_writes(ev_writer_sink(c->w), "500 cannot normalize command\n");
1651 return 1;
1652 }
460b9539 1653 if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) {
1654 sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n");
1655 return 1;
1656 }
1657 if(nvec == 0) {
1658 sink_writes(ev_writer_sink(c->w), "500 do what?\n");
1659 return 1;
1660 }
ba937f01 1661 if((n = TABLE_FIND(commands, name, vec[0])) < 0)
460b9539 1662 sink_writes(ev_writer_sink(c->w), "500 unknown command\n");
1663 else {
eb5dc014
RK
1664 if(commands[n].rights
1665 && !(c->rights & commands[n].rights)) {
834e7c4a 1666 error(0, "%s attempted %s but lacks required rights", c->who ? c->who : "NULL",
1667 commands[n].name);
b4a80f69 1668 sink_writes(ev_writer_sink(c->w), "510 Prohibited\n");
460b9539 1669 return 1;
1670 }
1671 ++vec;
1672 --nvec;
1673 if(nvec < commands[n].minargs) {
1674 sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n");
1675 return 1;
1676 }
1677 if(nvec > commands[n].maxargs) {
1678 sink_writes(ev_writer_sink(c->w), "500 too many arguments\n");
1679 return 1;
1680 }
1681 return commands[n].fn(c, vec, nvec);
1682 }
1683 return 1; /* completed */
1684}
1685
1686/* redirect to the right reader callback for our current state */
1687static int redirect_reader_callback(ev_source *ev,
1688 ev_reader *reader,
460b9539 1689 void *ptr,
1690 size_t bytes,
1691 int eof,
1692 void *u) {
1693 struct conn *c = u;
1694
75d64210 1695 return c->reader(ev, reader, ptr, bytes, eof, u);
460b9539 1696}
1697
1698/* the main command reader */
1699static int reader_callback(ev_source attribute((unused)) *ev,
1700 ev_reader *reader,
460b9539 1701 void *ptr,
1702 size_t bytes,
1703 int eof,
1704 void *u) {
1705 struct conn *c = u;
1706 char *eol;
1707 int complete;
1708
1709 D(("server reader_callback"));
1710 while((eol = memchr(ptr, '\n', bytes))) {
1711 *eol++ = 0;
1712 ev_reader_consume(reader, eol - (char *)ptr);
1713 complete = command(c, ptr);
1714 bytes -= (eol - (char *)ptr);
1715 ptr = eol;
1716 if(!complete) {
1717 /* the command had better have set a new reader callback */
1718 if(bytes || eof)
1719 /* there are further bytes to read, or we are at eof; arrange for the
1720 * command's reader callback to handle them */
1721 return ev_reader_incomplete(reader);
1722 /* nothing's going on right now */
1723 return 0;
1724 }
1725 /* command completed, we can go around and handle the next one */
1726 }
1727 if(eof) {
1728 if(bytes)
1729 error(0, "S%x unterminated line", c->tag);
8d8b8c1f 1730 D(("normal reader close"));
397ef7bb
RK
1731 c->r = 0;
1732 if(c->w) {
8d8b8c1f 1733 D(("close associated writer"));
397ef7bb
RK
1734 ev_writer_close(c->w);
1735 c->w = 0;
1736 }
0126692c 1737 remove_connection(c);
460b9539 1738 }
1739 return 0;
1740}
1741
1742static int listen_callback(ev_source *ev,
1743 int fd,
1744 const struct sockaddr attribute((unused)) *remote,
1745 socklen_t attribute((unused)) rlen,
1746 void *u) {
1747 const struct listener *l = u;
1748 struct conn *c = xmalloc(sizeof *c);
1749 static unsigned tags;
1750
1751 D(("server listen_callback fd %d (%s)", fd, l->name));
1752 nonblock(fd);
1753 cloexec(fd);
1754 c->tag = tags++;
1755 c->ev = ev;
e8c92ba7
RK
1756 c->w = ev_writer_new(ev, fd, writer_error, c,
1757 "client writer");
1758 c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c,
1759 "client reader");
75d64210 1760 ev_tie(c->r, c->w);
460b9539 1761 c->fd = fd;
1762 c->reader = reader_callback;
1763 c->l = l;
eb5dc014 1764 c->rights = 0;
460b9539 1765 gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM);
7b32e917
RK
1766 sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n",
1767 2,
b3141726
RK
1768 config->authorization_algorithm,
1769 hex(c->nonce, sizeof c->nonce));
460b9539 1770 return 0;
1771}
1772
1773int server_start(ev_source *ev, int pf,
1774 size_t socklen, const struct sockaddr *sa,
1775 const char *name) {
1776 int fd;
1777 struct listener *l = xmalloc(sizeof *l);
1778 static const int one = 1;
1779
1780 D(("server_init socket %s", name));
1781 fd = xsocket(pf, SOCK_STREAM, 0);
1782 xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
1783 if(bind(fd, sa, socklen) < 0) {
1784 error(errno, "error binding to %s", name);
1785 return -1;
1786 }
1787 xlisten(fd, 128);
1788 nonblock(fd);
1789 cloexec(fd);
1790 l->name = name;
1791 l->pf = pf;
e8c92ba7
RK
1792 if(ev_listen(ev, fd, listen_callback, l, "server listener"))
1793 exit(EXIT_FAILURE);
460b9539 1794 return fd;
1795}
1796
1797int server_stop(ev_source *ev, int fd) {
1798 xclose(fd);
1799 return ev_listen_cancel(ev, fd);
1800}
1801
1802/*
1803Local Variables:
1804c-basic-offset:2
1805comment-column:40
1806fill-column:79
1807End:
1808*/