2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell
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.
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.
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
25 #include <sys/types.h>
26 #include <sys/socket.h>
39 #include <netinet/in.h>
45 #include "server-queue.h"
52 #include "configuration.h"
62 #include "trackname.h"
68 # define NONCE_SIZE 16
71 int volume_left, volume_right; /* last known volume */
73 /** @brief Accept all well-formed login attempts
91 unsigned char nonce[NONCE_SIZE];
92 ev_reader_callback *reader;
93 struct eventlog_output *lo;
94 const struct listener *l;
97 static int reader_callback(ev_source *ev,
105 static const char *noyes[] = { "no", "yes" };
107 static int writer_error(ev_source attribute((unused)) *ev,
113 D(("server writer_error %d %d", fd, errno_value));
114 if(errno_value == 0) {
118 D(("server writer_error closes %d", fd));
119 xclose(fd); /* reader is done too, close */
121 D(("server writer_error shutdown %d SHUT_WR", fd));
122 xshutdown(fd, SHUT_WR); /* reader is not done yet */
125 if(errno_value != EPIPE)
126 error(errno_value, "S%x write error on socket", c->tag);
128 ev_reader_cancel(c->r);
134 static int reader_error(ev_source attribute((unused)) *ev,
140 D(("server reader_error %d %d", fd, errno_value));
141 error(errno, "S%x read error on socket", c->tag);
142 ev_writer_cancel(c->w);
144 info("closing fd %d", fd);
149 /* return true if we are talking to a trusted user */
150 static int trusted(struct conn *c) {
153 for(n = 0; (n < config->trust.n
154 && strcmp(config->trust.s[n], c->who)); ++n)
156 return n < config->trust.n;
159 static int c_disable(struct conn *c, char **vec, int nvec) {
161 disable_playing(c->who);
162 else if(nvec == 1 && !strcmp(vec[0], "now"))
163 disable_playing(c->who);
165 sink_writes(ev_writer_sink(c->w), "550 invalid argument\n");
166 return 1; /* completed */
168 sink_writes(ev_writer_sink(c->w), "250 OK\n");
169 return 1; /* completed */
172 static int c_enable(struct conn *c,
173 char attribute((unused)) **vec,
174 int attribute((unused)) nvec) {
175 enable_playing(c->who, c->ev);
176 /* Enable implicitly unpauses if there is nothing playing */
177 if(paused && !playing) resume_playing(c->who);
178 sink_writes(ev_writer_sink(c->w), "250 OK\n");
179 return 1; /* completed */
182 static int c_enabled(struct conn *c,
183 char attribute((unused)) **vec,
184 int attribute((unused)) nvec) {
185 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]);
186 return 1; /* completed */
189 static int c_play(struct conn *c, char **vec,
190 int attribute((unused)) nvec) {
192 struct queue_entry *q;
194 if(!trackdb_exists(vec[0])) {
195 sink_writes(ev_writer_sink(c->w), "550 track is not in database\n");
198 if(!(track = trackdb_resolve(vec[0]))) {
199 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
202 q = queue_add(track, c->who, WHERE_BEFORE_RANDOM);
204 /* If we added the first track, and something is playing, then prepare the
205 * new track. If nothing is playing then we don't bother as it wouldn't gain
207 if(q == qhead.next && playing)
209 sink_writes(ev_writer_sink(c->w), "250 queued\n");
210 /* If the queue was empty but we are for some reason paused then
212 if(!playing) resume_playing(0);
214 return 1; /* completed */
217 static int c_remove(struct conn *c, char **vec,
218 int attribute((unused)) nvec) {
219 struct queue_entry *q;
221 if(!(q = queue_find(vec[0]))) {
222 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
225 if(config->restrictions & RESTRICT_REMOVE) {
226 /* can only remove tracks that you submitted */
227 if(!q->submitter || strcmp(q->submitter, c->who)) {
228 sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n");
232 queue_remove(q, c->who);
233 /* De-prepare the track. */
235 /* If we removed the random track then add another one. */
236 if(q->state == playing_random)
238 /* Prepare whatever the next head track is. */
239 if(qhead.next != &qhead)
240 prepare(c->ev, qhead.next);
242 sink_writes(ev_writer_sink(c->w), "250 removed\n");
243 return 1; /* completed */
246 static int c_scratch(struct conn *c,
250 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
251 return 1; /* completed */
253 if(config->restrictions & RESTRICT_SCRATCH) {
254 /* can only scratch tracks you submitted and randomly selected ones */
255 if(playing->submitter && strcmp(playing->submitter, c->who)) {
256 sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n");
260 scratch(c->who, nvec == 1 ? vec[0] : 0);
261 /* If you scratch an unpaused track then it is automatically unpaused */
263 sink_writes(ev_writer_sink(c->w), "250 scratched\n");
264 return 1; /* completed */
267 static int c_pause(struct conn *c,
268 char attribute((unused)) **vec,
269 int attribute((unused)) nvec) {
271 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
272 return 1; /* completed */
275 sink_writes(ev_writer_sink(c->w), "250 already paused\n");
276 return 1; /* completed */
278 if(pause_playing(c->who) < 0)
279 sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n");
281 sink_writes(ev_writer_sink(c->w), "250 paused\n");
285 static int c_resume(struct conn *c,
286 char attribute((unused)) **vec,
287 int attribute((unused)) nvec) {
289 sink_writes(ev_writer_sink(c->w), "250 not paused\n");
290 return 1; /* completed */
292 resume_playing(c->who);
293 sink_writes(ev_writer_sink(c->w), "250 paused\n");
297 static int c_shutdown(struct conn *c,
298 char attribute((unused)) **vec,
299 int attribute((unused)) nvec) {
300 info("S%x shut down by %s", c->tag, c->who);
301 sink_writes(ev_writer_sink(c->w), "250 shutting down\n");
302 ev_writer_flush(c->w);
306 static int c_reconfigure(struct conn *c,
307 char attribute((unused)) **vec,
308 int attribute((unused)) nvec) {
309 info("S%x reconfigure by %s", c->tag, c->who);
310 if(reconfigure(c->ev, 1))
311 sink_writes(ev_writer_sink(c->w), "550 error reading new config\n");
313 sink_writes(ev_writer_sink(c->w), "250 installed new config\n");
314 return 1; /* completed */
317 static int c_rescan(struct conn *c,
318 char attribute((unused)) **vec,
319 int attribute((unused)) nvec) {
320 info("S%x rescan by %s", c->tag, c->who);
321 trackdb_rescan(c->ev);
322 sink_writes(ev_writer_sink(c->w), "250 initiated rescan\n");
323 return 1; /* completed */
326 static int c_version(struct conn *c,
327 char attribute((unused)) **vec,
328 int attribute((unused)) nvec) {
329 /* VERSION had better only use the basic character set */
330 sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_version_string);
331 return 1; /* completed */
334 static int c_playing(struct conn *c,
335 char attribute((unused)) **vec,
336 int attribute((unused)) nvec) {
338 queue_fix_sofar(playing);
339 playing->expected = 0;
340 sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing));
342 sink_printf(ev_writer_sink(c->w), "259 nothing playing\n");
343 return 1; /* completed */
346 static int c_become(struct conn *c,
348 int attribute((unused)) nvec) {
350 sink_writes(ev_writer_sink(c->w), "230 OK\n");
354 static int c_user(struct conn *c,
356 int attribute((unused)) nvec) {
361 struct sockaddr_in in;
362 struct sockaddr_in6 in6;
368 sink_writes(ev_writer_sink(c->w), "530 already authenticated\n");
371 /* get connection data */
373 if(getpeername(c->fd, &u.sa, &l) < 0) {
374 error(errno, "S%x error calling getpeername", c->tag);
375 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
378 if(c->l->pf != PF_UNIX) {
379 if((n = getnameinfo(&u.sa, l,
380 host, sizeof host, 0, 0, NI_NUMERICHOST))) {
381 error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n));
382 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
386 strcpy(host, "local");
388 for(n = 0; n < config->allow.n
389 && strcmp(config->allow.s[n].s[0], vec[0]); ++n)
391 /* if it's a real user check whether the response is right */
392 if(n >= config->allow.n) {
393 info("S%x unknown user '%s' from %s", c->tag, vec[0], host);
394 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
397 res = authhash(c->nonce, sizeof c->nonce, config->allow.s[n].s[1],
398 config->authorization_algorithm);
399 if(wideopen || (res && !strcmp(res, vec[1]))) {
401 /* currently we only bother logging remote connections */
402 if(c->l->pf != PF_UNIX)
403 info("S%x %s connected from %s", c->tag, vec[0], host);
404 sink_writes(ev_writer_sink(c->w), "230 OK\n");
407 /* oops, response was wrong */
408 info("S%x authentication failure for %s from %s", c->tag, vec[0], host);
409 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
413 static int c_recent(struct conn *c,
414 char attribute((unused)) **vec,
415 int attribute((unused)) nvec) {
416 const struct queue_entry *q;
418 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
419 for(q = phead.next; q != &phead; q = q->next)
420 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
421 sink_writes(ev_writer_sink(c->w), ".\n");
422 return 1; /* completed */
425 static int c_queue(struct conn *c,
426 char attribute((unused)) **vec,
427 int attribute((unused)) nvec) {
428 struct queue_entry *q;
433 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
434 if(playing_is_enabled() && !paused) {
436 queue_fix_sofar(playing);
437 if((l = trackdb_get(playing->track, "_length"))
438 && (length = atol(l))) {
440 when += length - playing->sofar + config->gap;
443 /* Nothing is playing but playing is enabled, so whatever is
444 * first in the queue can be expected to start immediately. */
447 for(q = qhead.next; q != &qhead; q = q->next) {
448 /* fill in estimated start time */
450 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
451 /* update for next track */
453 if((l = trackdb_get(q->track, "_length"))
454 && (length = atol(l)))
455 when += length + config->gap;
460 sink_writes(ev_writer_sink(c->w), ".\n");
461 return 1; /* completed */
464 static int output_list(struct conn *c, char **vec) {
466 sink_printf(ev_writer_sink(c->w), "%s\n", *vec++);
467 sink_writes(ev_writer_sink(c->w), ".\n");
471 static int files_dirs(struct conn *c,
474 enum trackdb_listable what) {
475 const char *dir, *re, *errstr;
481 case 0: dir = 0; re = 0; break;
482 case 1: dir = vec[0]; re = 0; break;
483 case 2: dir = vec[0]; re = vec[1]; break;
486 /* A bit of a bodge to make sure the args don't trample on cache keys */
487 if(dir && strchr(dir, '\n')) {
488 sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n");
491 if(re && strchr(re, '\n')) {
492 sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n");
495 /* We bother eliminating "" because the web interface is relatively
496 * likely to send it */
498 byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re);
499 fvec = (char **)cache_get(&cache_files_type, key);
501 /* Got a cache hit, don't store the answer in the cache */
504 rec = 0; /* quieten compiler */
506 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
508 if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8,
509 &errstr, &erroffset, 0))) {
510 sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n",
514 /* It only counts as a miss if the regexp was valid. */
515 ++cache_files_misses;
518 /* No regexp, don't bother caching the result */
524 /* No cache hit (either because a miss, or because we did not look) so do
527 fvec = trackdb_list(dir, 0, what, rec);
529 fvec = trackdb_list(0, 0, what, rec);
532 /* Put the answer in the cache */
533 cache_put(&cache_files_type, key, fvec);
534 sink_writes(ev_writer_sink(c->w), "253 Listing follow\n");
535 return output_list(c, fvec);
538 static int c_files(struct conn *c,
541 return files_dirs(c, vec, nvec, trackdb_files);
544 static int c_dirs(struct conn *c,
547 return files_dirs(c, vec, nvec, trackdb_directories);
550 static int c_allfiles(struct conn *c,
553 return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files);
556 static int c_get(struct conn *c,
558 int attribute((unused)) nvec) {
561 if(vec[1][0] != '_' && (v = trackdb_get(vec[0], vec[1])))
562 sink_printf(ev_writer_sink(c->w), "252 %s\n", v);
564 sink_writes(ev_writer_sink(c->w), "550 not found\n");
568 static int c_length(struct conn *c,
570 int attribute((unused)) nvec) {
571 const char *track, *v;
573 if(!(track = trackdb_resolve(vec[0]))) {
574 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
577 if((v = trackdb_get(track, "_length")))
578 sink_printf(ev_writer_sink(c->w), "252 %s\n", v);
580 sink_writes(ev_writer_sink(c->w), "550 not found\n");
584 static int c_set(struct conn *c,
586 int attribute((unused)) nvec) {
587 if(vec[1][0] != '_' && !trackdb_set(vec[0], vec[1], vec[2]))
588 sink_writes(ev_writer_sink(c->w), "250 OK\n");
590 sink_writes(ev_writer_sink(c->w), "550 not found\n");
594 static int c_prefs(struct conn *c,
596 int attribute((unused)) nvec) {
599 k = trackdb_get_all(vec[0]);
600 sink_writes(ev_writer_sink(c->w), "253 prefs follow\n");
601 for(; k; k = k->next)
602 if(k->name[0] != '_') /* omit internal values */
603 sink_printf(ev_writer_sink(c->w),
604 " %s %s\n", quoteutf8(k->name), quoteutf8(k->value));
605 sink_writes(ev_writer_sink(c->w), ".\n");
609 static int c_exists(struct conn *c,
611 int attribute((unused)) nvec) {
612 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]);
616 static void search_parse_error(const char *msg, void *u) {
617 *(const char **)u = msg;
620 static int c_search(struct conn *c,
622 int attribute((unused)) nvec) {
623 char **terms, **results;
624 int nterms, nresults, n;
625 const char *e = "unknown error";
627 /* This is a bit of a bodge. Initially it's there to make the eclient
628 * interface a bit more convenient to add searching to, but it has the more
629 * compelling advantage that if everything uses it, then interpretation of
630 * user-supplied search strings will be the same everywhere. */
631 if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) {
632 sink_printf(ev_writer_sink(c->w), "550 %s\n", e);
634 results = trackdb_search(terms, nterms, &nresults);
635 sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults);
636 for(n = 0; n < nresults; ++n)
637 sink_printf(ev_writer_sink(c->w), "%s\n", results[n]);
638 sink_writes(ev_writer_sink(c->w), ".\n");
643 static int c_random_enable(struct conn *c,
644 char attribute((unused)) **vec,
645 int attribute((unused)) nvec) {
646 enable_random(c->who, c->ev);
647 /* Enable implicitly unpauses if there is nothing playing */
648 if(paused && !playing) resume_playing(c->who);
649 sink_writes(ev_writer_sink(c->w), "250 OK\n");
650 return 1; /* completed */
653 static int c_random_disable(struct conn *c,
654 char attribute((unused)) **vec,
655 int attribute((unused)) nvec) {
656 disable_random(c->who);
657 sink_writes(ev_writer_sink(c->w), "250 OK\n");
658 return 1; /* completed */
661 static int c_random_enabled(struct conn *c,
662 char attribute((unused)) **vec,
663 int attribute((unused)) nvec) {
664 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]);
665 return 1; /* completed */
668 static int c_stats(struct conn *c,
669 char attribute((unused)) **vec,
670 int attribute((unused)) nvec) {
674 v = trackdb_stats(&nv);
675 sink_printf(ev_writer_sink(c->w), "253 stats\n");
676 for(n = 0; n < nv; ++n) {
678 sink_writes(ev_writer_sink(c->w), ".");
679 sink_printf(ev_writer_sink(c->w), "%s\n", v[n]);
681 sink_writes(ev_writer_sink(c->w), ".\n");
685 static int c_volume(struct conn *c,
696 l = r = atoi(vec[0]);
707 if(mixer_control(&l, &r, set))
708 sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n");
710 sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r);
711 if(l != volume_left || r != volume_right) {
714 snprintf(lb, sizeof lb, "%d", l);
715 snprintf(rb, sizeof rb, "%d", r);
716 eventlog("volume", lb, rb, (char *)0);
722 /* we are logging, and some data is available to read */
723 static int logging_reader_callback(ev_source *ev,
732 /* don't log to this conn any more */
733 eventlog_remove(c->lo);
734 /* terminate the log output */
735 sink_writes(ev_writer_sink(c->w), ".\n");
736 /* restore the reader callback */
737 c->reader = reader_callback;
738 /* ...and exit via it */
739 return c->reader(ev, reader, fd, ptr, bytes, eof, u);
742 static void logclient(const char *msg, void *user) {
743 struct conn *c = user;
745 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n",
746 (uintmax_t)time(0), msg);
749 static int c_log(struct conn *c,
750 char attribute((unused)) **vec,
751 int attribute((unused)) nvec) {
754 sink_writes(ev_writer_sink(c->w), "254 OK\n");
755 /* pump out initial state */
757 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
759 playing_is_enabled() ? "enable_play" : "disable_play");
760 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
762 random_is_enabled() ? "enable_random" : "disable_random");
763 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
765 paused ? "pause" : "resume");
767 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n",
770 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n",
771 (uintmax_t)now, volume_left, volume_right);
772 c->lo = xmalloc(sizeof *c->lo);
773 c->lo->fn = logclient;
776 c->reader = logging_reader_callback;
780 static void post_move_cleanup(void) {
781 struct queue_entry *q;
783 /* If we have caused any random tracks to not be at the end then we make them
784 * no longer be random. */
785 for(q = qhead.next; q != &qhead; q = q->next)
786 if(q->state == playing_random && q->next != &qhead)
787 q->state = playing_unplayed;
788 /* That might mean we need to add a new random track. */
793 static int c_move(struct conn *c,
795 int attribute((unused)) nvec) {
796 struct queue_entry *q;
799 if(config->restrictions & RESTRICT_MOVE) {
801 sink_writes(ev_writer_sink(c->w),
802 "550 only trusted users can move tracks\n");
806 if(!(q = queue_find(vec[0]))) {
807 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
810 n = queue_move(q, atoi(vec[1]), c->who);
812 sink_printf(ev_writer_sink(c->w), "252 %d\n", n);
813 /* If we've moved to the head of the queue then prepare the track. */
819 static int c_moveafter(struct conn *c,
821 int attribute((unused)) nvec) {
822 struct queue_entry *q, **qs;
825 if(config->restrictions & RESTRICT_MOVE) {
827 sink_writes(ev_writer_sink(c->w),
828 "550 only trusted users can move tracks\n");
833 if(!(q = queue_find(vec[0]))) {
834 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
841 qs = xcalloc(nvec, sizeof *qs);
842 for(n = 0; n < nvec; ++n)
843 if(!(qs[n] = queue_find(vec[n]))) {
844 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
847 queue_moveafter(q, nvec, qs, c->who);
849 sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n");
850 /* If we've moved to the head of the queue then prepare the track. */
856 static int c_part(struct conn *c,
858 int attribute((unused)) nvec) {
859 sink_printf(ev_writer_sink(c->w), "252 %s\n",
860 trackdb_getpart(vec[0], vec[1], vec[2]));
864 static int c_resolve(struct conn *c,
866 int attribute((unused)) nvec) {
869 if(!(track = trackdb_resolve(vec[0]))) {
870 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
873 sink_printf(ev_writer_sink(c->w), "252 %s\n", track);
877 static int c_tags(struct conn *c,
878 char attribute((unused)) **vec,
879 int attribute((unused)) nvec) {
880 char **tags = trackdb_alltags();
882 sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n");
884 sink_printf(ev_writer_sink(c->w), "%s%s\n",
885 **tags == '.' ? "." : "", *tags);
888 sink_writes(ev_writer_sink(c->w), ".\n");
889 return 1; /* completed */
893 static int c_set_global(struct conn *c,
895 int attribute((unused)) nvec) {
896 trackdb_set_global(vec[0], vec[1], c->who);
897 sink_printf(ev_writer_sink(c->w), "250 OK\n");
901 static int c_get_global(struct conn *c,
903 int attribute((unused)) nvec) {
904 const char *s = trackdb_get_global(vec[0]);
907 sink_printf(ev_writer_sink(c->w), "252 %s\n", s);
909 sink_writes(ev_writer_sink(c->w), "550 not found\n");
913 static int c_nop(struct conn *c,
914 char attribute((unused)) **vec,
915 int attribute((unused)) nvec) {
916 sink_printf(ev_writer_sink(c->w), "250 Quack\n");
920 static int c_new(struct conn *c,
923 char **tracks = trackdb_new(0, nvec > 0 ? atoi(vec[0]) : INT_MAX);
925 sink_printf(ev_writer_sink(c->w), "253 New track list follows\n");
927 sink_printf(ev_writer_sink(c->w), "%s%s\n",
928 **tracks == '.' ? "." : "", *tracks);
931 sink_writes(ev_writer_sink(c->w), ".\n");
932 return 1; /* completed */
936 static int c_rtp_address(struct conn *c,
937 char attribute((unused)) **vec,
938 int attribute((unused)) nvec) {
939 if(config->speaker_backend == BACKEND_NETWORK) {
940 sink_printf(ev_writer_sink(c->w), "252 %s %s\n",
941 quoteutf8(config->broadcast.s[0]),
942 quoteutf8(config->broadcast.s[1]));
944 sink_writes(ev_writer_sink(c->w), "550 No RTP\n");
948 #define C_AUTH 0001 /* must be authenticated */
949 #define C_TRUSTED 0002 /* must be trusted user */
951 static const struct command {
953 int minargs, maxargs;
954 int (*fn)(struct conn *, char **, int);
957 { "allfiles", 0, 2, c_allfiles, C_AUTH },
958 { "become", 1, 1, c_become, C_AUTH|C_TRUSTED },
959 { "dirs", 0, 2, c_dirs, C_AUTH },
960 { "disable", 0, 1, c_disable, C_AUTH },
961 { "enable", 0, 0, c_enable, C_AUTH },
962 { "enabled", 0, 0, c_enabled, C_AUTH },
963 { "exists", 1, 1, c_exists, C_AUTH },
964 { "files", 0, 2, c_files, C_AUTH },
965 { "get", 2, 2, c_get, C_AUTH },
966 { "get-global", 1, 1, c_get_global, C_AUTH },
967 { "length", 1, 1, c_length, C_AUTH },
968 { "log", 0, 0, c_log, C_AUTH },
969 { "move", 2, 2, c_move, C_AUTH },
970 { "moveafter", 1, INT_MAX, c_moveafter, C_AUTH },
971 { "new", 0, 1, c_new, C_AUTH },
972 { "nop", 0, 0, c_nop, C_AUTH },
973 { "part", 3, 3, c_part, C_AUTH },
974 { "pause", 0, 0, c_pause, C_AUTH },
975 { "play", 1, 1, c_play, C_AUTH },
976 { "playing", 0, 0, c_playing, C_AUTH },
977 { "prefs", 1, 1, c_prefs, C_AUTH },
978 { "queue", 0, 0, c_queue, C_AUTH },
979 { "random-disable", 0, 0, c_random_disable, C_AUTH },
980 { "random-enable", 0, 0, c_random_enable, C_AUTH },
981 { "random-enabled", 0, 0, c_random_enabled, C_AUTH },
982 { "recent", 0, 0, c_recent, C_AUTH },
983 { "reconfigure", 0, 0, c_reconfigure, C_AUTH|C_TRUSTED },
984 { "remove", 1, 1, c_remove, C_AUTH },
985 { "rescan", 0, 0, c_rescan, C_AUTH|C_TRUSTED },
986 { "resolve", 1, 1, c_resolve, C_AUTH },
987 { "resume", 0, 0, c_resume, C_AUTH },
988 { "rtp-address", 0, 0, c_rtp_address, C_AUTH },
989 { "scratch", 0, 1, c_scratch, C_AUTH },
990 { "search", 1, 1, c_search, C_AUTH },
991 { "set", 3, 3, c_set, C_AUTH, },
992 { "set-global", 2, 2, c_set_global, C_AUTH },
993 { "shutdown", 0, 0, c_shutdown, C_AUTH|C_TRUSTED },
994 { "stats", 0, 0, c_stats, C_AUTH },
995 { "tags", 0, 0, c_tags, C_AUTH },
996 { "unset", 2, 2, c_set, C_AUTH },
997 { "unset-global", 1, 1, c_set_global, C_AUTH },
998 { "user", 2, 2, c_user, 0 },
999 { "version", 0, 0, c_version, C_AUTH },
1000 { "volume", 0, 2, c_volume, C_AUTH }
1003 static void command_error(const char *msg, void *u) {
1006 sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg);
1009 /* process a command. Return 1 if complete, 0 if incomplete. */
1010 static int command(struct conn *c, char *line) {
1014 D(("server command %s", line));
1015 if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) {
1016 sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n");
1020 sink_writes(ev_writer_sink(c->w), "500 do what?\n");
1023 if((n = TABLE_FIND(commands, struct command, name, vec[0])) < 0)
1024 sink_writes(ev_writer_sink(c->w), "500 unknown command\n");
1026 if((commands[n].flags & C_AUTH) && !c->who) {
1027 sink_writes(ev_writer_sink(c->w), "530 not authenticated\n");
1030 if((commands[n].flags & C_TRUSTED) && !trusted(c)) {
1031 sink_writes(ev_writer_sink(c->w), "530 insufficient privilege\n");
1036 if(nvec < commands[n].minargs) {
1037 sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n");
1040 if(nvec > commands[n].maxargs) {
1041 sink_writes(ev_writer_sink(c->w), "500 too many arguments\n");
1044 return commands[n].fn(c, vec, nvec);
1046 return 1; /* completed */
1049 /* redirect to the right reader callback for our current state */
1050 static int redirect_reader_callback(ev_source *ev,
1059 return c->reader(ev, reader, fd, ptr, bytes, eof, u);
1062 /* the main command reader */
1063 static int reader_callback(ev_source attribute((unused)) *ev,
1065 int attribute((unused)) fd,
1074 D(("server reader_callback"));
1075 while((eol = memchr(ptr, '\n', bytes))) {
1077 ev_reader_consume(reader, eol - (char *)ptr);
1078 complete = command(c, ptr);
1079 bytes -= (eol - (char *)ptr);
1082 /* the command had better have set a new reader callback */
1084 /* there are further bytes to read, or we are at eof; arrange for the
1085 * command's reader callback to handle them */
1086 return ev_reader_incomplete(reader);
1087 /* nothing's going on right now */
1090 /* command completed, we can go around and handle the next one */
1094 error(0, "S%x unterminated line", c->tag);
1096 return ev_writer_close(c->w);
1101 static int listen_callback(ev_source *ev,
1103 const struct sockaddr attribute((unused)) *remote,
1104 socklen_t attribute((unused)) rlen,
1106 const struct listener *l = u;
1107 struct conn *c = xmalloc(sizeof *c);
1108 static unsigned tags;
1110 D(("server listen_callback fd %d (%s)", fd, l->name));
1115 c->w = ev_writer_new(ev, fd, writer_error, c,
1117 c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c,
1120 c->reader = reader_callback;
1122 gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM);
1123 if(!strcmp(config->authorization_algorithm, "sha1")
1124 || !strcmp(config->authorization_algorithm, "SHA1")) {
1125 sink_printf(ev_writer_sink(c->w), "231 %s\n",
1126 hex(c->nonce, sizeof c->nonce));
1128 sink_printf(ev_writer_sink(c->w), "231 %s %s\n",
1129 config->authorization_algorithm,
1130 hex(c->nonce, sizeof c->nonce));
1135 int server_start(ev_source *ev, int pf,
1136 size_t socklen, const struct sockaddr *sa,
1139 struct listener *l = xmalloc(sizeof *l);
1140 static const int one = 1;
1142 D(("server_init socket %s", name));
1143 fd = xsocket(pf, SOCK_STREAM, 0);
1144 xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
1145 if(bind(fd, sa, socklen) < 0) {
1146 error(errno, "error binding to %s", name);
1154 if(ev_listen(ev, fd, listen_callback, l, "server listener"))
1159 int server_stop(ev_source *ev, int fd) {
1161 return ev_listen_cancel(ev, fd);