2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2005, 2006 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>
51 #include "configuration.h"
61 #include "trackname.h"
67 # define NONCE_SIZE 16
70 int volume_left, volume_right; /* last known volume */
72 /** @brief Accept all well-formed login attempts
90 unsigned char nonce[NONCE_SIZE];
91 ev_reader_callback *reader;
92 struct eventlog_output *lo;
93 const struct listener *l;
96 static int reader_callback(ev_source *ev,
104 static const char *noyes[] = { "no", "yes" };
106 static int writer_error(ev_source attribute((unused)) *ev,
112 D(("server writer_error %d %d", fd, errno_value));
113 if(errno_value == 0) {
117 D(("server writer_error closes %d", fd));
118 xclose(fd); /* reader is done too, close */
120 D(("server writer_error shutdown %d SHUT_WR", fd));
121 xshutdown(fd, SHUT_WR); /* reader is not done yet */
124 if(errno_value != EPIPE)
125 error(errno_value, "S%x write error on socket", c->tag);
127 ev_reader_cancel(c->r);
133 static int reader_error(ev_source attribute((unused)) *ev,
139 D(("server reader_error %d %d", fd, errno_value));
140 error(errno, "S%x read error on socket", c->tag);
141 ev_writer_cancel(c->w);
146 /* return true if we are talking to a trusted user */
147 static int trusted(struct conn *c) {
150 for(n = 0; (n < config->trust.n
151 && strcmp(config->trust.s[n], c->who)); ++n)
153 return n < config->trust.n;
156 static int c_disable(struct conn *c, char **vec, int nvec) {
158 disable_playing(c->who);
159 else if(nvec == 1 && !strcmp(vec[0], "now"))
160 disable_playing(c->who);
162 sink_writes(ev_writer_sink(c->w), "550 invalid argument\n");
163 return 1; /* completed */
165 sink_writes(ev_writer_sink(c->w), "250 OK\n");
166 return 1; /* completed */
169 static int c_enable(struct conn *c,
170 char attribute((unused)) **vec,
171 int attribute((unused)) nvec) {
172 enable_playing(c->who, c->ev);
173 /* Enable implicitly unpauses if there is nothing playing */
174 if(paused && !playing) resume_playing(c->who);
175 sink_writes(ev_writer_sink(c->w), "250 OK\n");
176 return 1; /* completed */
179 static int c_enabled(struct conn *c,
180 char attribute((unused)) **vec,
181 int attribute((unused)) nvec) {
182 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]);
183 return 1; /* completed */
186 static int c_play(struct conn *c, char **vec,
187 int attribute((unused)) nvec) {
189 struct queue_entry *q;
191 if(!trackdb_exists(vec[0])) {
192 sink_writes(ev_writer_sink(c->w), "550 track is not in database\n");
195 if(!(track = trackdb_resolve(vec[0]))) {
196 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
199 q = queue_add(track, c->who, WHERE_BEFORE_RANDOM);
201 /* If we added the first track, and something is playing, then prepare the
202 * new track. If nothing is playing then we don't bother as it wouldn't gain
204 if(q == qhead.next && playing)
206 sink_writes(ev_writer_sink(c->w), "250 queued\n");
207 /* If the queue was empty but we are for some reason paused then
209 if(!playing) resume_playing(0);
211 return 1; /* completed */
214 static int c_remove(struct conn *c, char **vec,
215 int attribute((unused)) nvec) {
216 struct queue_entry *q;
218 if(!(q = queue_find(vec[0]))) {
219 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
222 if(config->restrictions & RESTRICT_REMOVE) {
223 /* can only remove tracks that you submitted */
224 if(!q->submitter || strcmp(q->submitter, c->who)) {
225 sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n");
229 queue_remove(q, c->who);
230 /* De-prepare the track. */
232 /* If we removed the random track then add another one. */
233 if(q->state == playing_random)
235 /* Prepare whatever the next head track is. */
236 if(qhead.next != &qhead)
237 prepare(c->ev, qhead.next);
239 sink_writes(ev_writer_sink(c->w), "250 removed\n");
240 return 1; /* completed */
243 static int c_scratch(struct conn *c,
247 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
248 return 1; /* completed */
250 if(config->restrictions & RESTRICT_SCRATCH) {
251 /* can only scratch tracks you submitted and randomly selected ones */
252 if(playing->submitter && strcmp(playing->submitter, c->who)) {
253 sink_writes(ev_writer_sink(c->w), "550 you didn't submit that track!\n");
257 scratch(c->who, nvec == 1 ? vec[0] : 0);
258 /* If you scratch an unpaused track then it is automatically unpaused */
260 sink_writes(ev_writer_sink(c->w), "250 scratched\n");
261 return 1; /* completed */
264 static int c_pause(struct conn *c,
265 char attribute((unused)) **vec,
266 int attribute((unused)) nvec) {
268 sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n");
269 return 1; /* completed */
272 sink_writes(ev_writer_sink(c->w), "250 already paused\n");
273 return 1; /* completed */
275 if(pause_playing(c->who) < 0)
276 sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n");
278 sink_writes(ev_writer_sink(c->w), "250 paused\n");
282 static int c_resume(struct conn *c,
283 char attribute((unused)) **vec,
284 int attribute((unused)) nvec) {
286 sink_writes(ev_writer_sink(c->w), "250 not paused\n");
287 return 1; /* completed */
289 resume_playing(c->who);
290 sink_writes(ev_writer_sink(c->w), "250 paused\n");
294 static int c_shutdown(struct conn *c,
295 char attribute((unused)) **vec,
296 int attribute((unused)) nvec) {
297 info("S%x shut down by %s", c->tag, c->who);
298 sink_writes(ev_writer_sink(c->w), "250 shutting down\n");
299 ev_writer_flush(c->w);
303 static int c_reconfigure(struct conn *c,
304 char attribute((unused)) **vec,
305 int attribute((unused)) nvec) {
306 info("S%x reconfigure by %s", c->tag, c->who);
307 if(reconfigure(c->ev, 1))
308 sink_writes(ev_writer_sink(c->w), "550 error reading new config\n");
310 sink_writes(ev_writer_sink(c->w), "250 installed new config\n");
311 return 1; /* completed */
314 static int c_rescan(struct conn *c,
315 char attribute((unused)) **vec,
316 int attribute((unused)) nvec) {
317 info("S%x rescan by %s", c->tag, c->who);
318 trackdb_rescan(c->ev);
319 sink_writes(ev_writer_sink(c->w), "250 initiated rescan\n");
320 return 1; /* completed */
323 static int c_version(struct conn *c,
324 char attribute((unused)) **vec,
325 int attribute((unused)) nvec) {
326 /* VERSION had better only use the basic character set */
327 sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_version_string);
328 return 1; /* completed */
331 static int c_playing(struct conn *c,
332 char attribute((unused)) **vec,
333 int attribute((unused)) nvec) {
335 queue_fix_sofar(playing);
336 playing->expected = 0;
337 sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing));
339 sink_printf(ev_writer_sink(c->w), "259 nothing playing\n");
340 return 1; /* completed */
343 static int c_become(struct conn *c,
345 int attribute((unused)) nvec) {
347 sink_writes(ev_writer_sink(c->w), "230 OK\n");
351 static int c_user(struct conn *c,
353 int attribute((unused)) nvec) {
358 struct sockaddr_in in;
359 struct sockaddr_in6 in6;
365 sink_writes(ev_writer_sink(c->w), "530 already authenticated\n");
368 /* get connection data */
370 if(getpeername(c->fd, &u.sa, &l) < 0) {
371 error(errno, "S%x error calling getpeername", c->tag);
372 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
375 if(c->l->pf != PF_UNIX) {
376 if((n = getnameinfo(&u.sa, l,
377 host, sizeof host, 0, 0, NI_NUMERICHOST))) {
378 error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n));
379 sink_writes(ev_writer_sink(c->w), "530 authentication failure\n");
383 strcpy(host, "local");
385 for(n = 0; n < config->allow.n
386 && strcmp(config->allow.s[n].s[0], vec[0]); ++n)
388 /* if it's a real user check whether the response is right */
389 if(n >= config->allow.n) {
390 info("S%x unknown user '%s' from %s", c->tag, vec[0], host);
391 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
394 res = authhash(c->nonce, sizeof c->nonce, config->allow.s[n].s[1],
395 config->authorization_algorithm);
396 if(wideopen || (res && !strcmp(res, vec[1]))) {
398 /* currently we only bother logging remote connections */
399 if(c->l->pf != PF_UNIX)
400 info("S%x %s connected from %s", c->tag, vec[0], host);
401 sink_writes(ev_writer_sink(c->w), "230 OK\n");
404 /* oops, response was wrong */
405 info("S%x authentication failure for %s from %s", c->tag, vec[0], host);
406 sink_writes(ev_writer_sink(c->w), "530 authentication failed\n");
410 static int c_recent(struct conn *c,
411 char attribute((unused)) **vec,
412 int attribute((unused)) nvec) {
413 const struct queue_entry *q;
415 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
416 for(q = phead.next; q != &phead; q = q->next)
417 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
418 sink_writes(ev_writer_sink(c->w), ".\n");
419 return 1; /* completed */
422 static int c_queue(struct conn *c,
423 char attribute((unused)) **vec,
424 int attribute((unused)) nvec) {
425 struct queue_entry *q;
430 sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n");
431 if(playing_is_enabled() && !paused) {
433 queue_fix_sofar(playing);
434 if((l = trackdb_get(playing->track, "_length"))
435 && (length = atol(l))) {
437 when += length - playing->sofar + config->gap;
440 /* Nothing is playing but playing is enabled, so whatever is
441 * first in the queue can be expected to start immediately. */
444 for(q = qhead.next; q != &qhead; q = q->next) {
445 /* fill in estimated start time */
447 sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q));
448 /* update for next track */
450 if((l = trackdb_get(q->track, "_length"))
451 && (length = atol(l)))
452 when += length + config->gap;
457 sink_writes(ev_writer_sink(c->w), ".\n");
458 return 1; /* completed */
461 static int output_list(struct conn *c, char **vec) {
463 sink_printf(ev_writer_sink(c->w), "%s\n", *vec++);
464 sink_writes(ev_writer_sink(c->w), ".\n");
468 static int files_dirs(struct conn *c,
471 enum trackdb_listable what) {
472 const char *dir, *re, *errstr;
478 case 0: dir = 0; re = 0; break;
479 case 1: dir = vec[0]; re = 0; break;
480 case 2: dir = vec[0]; re = vec[1]; break;
483 /* A bit of a bodge to make sure the args don't trample on cache keys */
484 if(dir && strchr(dir, '\n')) {
485 sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n");
488 if(re && strchr(re, '\n')) {
489 sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n");
492 /* We bother eliminating "" because the web interface is relatively
493 * likely to send it */
495 byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re);
496 fvec = (char **)cache_get(&cache_files_type, key);
498 /* Got a cache hit, don't store the answer in the cache */
501 rec = 0; /* quieten compiler */
503 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
505 if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8,
506 &errstr, &erroffset, 0))) {
507 sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n",
511 /* It only counts as a miss if the regexp was valid. */
512 ++cache_files_misses;
515 /* No regexp, don't bother caching the result */
521 /* No cache hit (either because a miss, or because we did not look) so do
524 fvec = trackdb_list(dir, 0, what, rec);
526 fvec = trackdb_list(0, 0, what, rec);
529 /* Put the answer in the cache */
530 cache_put(&cache_files_type, key, fvec);
531 sink_writes(ev_writer_sink(c->w), "253 Listing follow\n");
532 return output_list(c, fvec);
535 static int c_files(struct conn *c,
538 return files_dirs(c, vec, nvec, trackdb_files);
541 static int c_dirs(struct conn *c,
544 return files_dirs(c, vec, nvec, trackdb_directories);
547 static int c_allfiles(struct conn *c,
550 return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files);
553 static int c_get(struct conn *c,
555 int attribute((unused)) nvec) {
558 if(vec[1][0] != '_' && (v = trackdb_get(vec[0], vec[1])))
559 sink_printf(ev_writer_sink(c->w), "252 %s\n", v);
561 sink_writes(ev_writer_sink(c->w), "550 not found\n");
565 static int c_length(struct conn *c,
567 int attribute((unused)) nvec) {
568 const char *track, *v;
570 if(!(track = trackdb_resolve(vec[0]))) {
571 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
574 if((v = trackdb_get(track, "_length")))
575 sink_printf(ev_writer_sink(c->w), "252 %s\n", v);
577 sink_writes(ev_writer_sink(c->w), "550 not found\n");
581 static int c_set(struct conn *c,
583 int attribute((unused)) nvec) {
584 if(vec[1][0] != '_' && !trackdb_set(vec[0], vec[1], vec[2]))
585 sink_writes(ev_writer_sink(c->w), "250 OK\n");
587 sink_writes(ev_writer_sink(c->w), "550 not found\n");
591 static int c_prefs(struct conn *c,
593 int attribute((unused)) nvec) {
596 k = trackdb_get_all(vec[0]);
597 sink_writes(ev_writer_sink(c->w), "253 prefs follow\n");
598 for(; k; k = k->next)
599 if(k->name[0] != '_') /* omit internal values */
600 sink_printf(ev_writer_sink(c->w),
601 " %s %s\n", quoteutf8(k->name), quoteutf8(k->value));
602 sink_writes(ev_writer_sink(c->w), ".\n");
606 static int c_exists(struct conn *c,
608 int attribute((unused)) nvec) {
609 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]);
613 static void search_parse_error(const char *msg, void *u) {
614 *(const char **)u = msg;
617 static int c_search(struct conn *c,
619 int attribute((unused)) nvec) {
620 char **terms, **results;
621 int nterms, nresults, n;
622 const char *e = "unknown error";
624 /* This is a bit of a bodge. Initially it's there to make the eclient
625 * interface a bit more convenient to add searching to, but it has the more
626 * compelling advantage that if everything uses it, then interpretation of
627 * user-supplied search strings will be the same everywhere. */
628 if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) {
629 sink_printf(ev_writer_sink(c->w), "550 %s\n", e);
631 results = trackdb_search(terms, nterms, &nresults);
632 sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults);
633 for(n = 0; n < nresults; ++n)
634 sink_printf(ev_writer_sink(c->w), "%s\n", results[n]);
635 sink_writes(ev_writer_sink(c->w), ".\n");
640 static int c_random_enable(struct conn *c,
641 char attribute((unused)) **vec,
642 int attribute((unused)) nvec) {
643 enable_random(c->who, c->ev);
644 /* Enable implicitly unpauses if there is nothing playing */
645 if(paused && !playing) resume_playing(c->who);
646 sink_writes(ev_writer_sink(c->w), "250 OK\n");
647 return 1; /* completed */
650 static int c_random_disable(struct conn *c,
651 char attribute((unused)) **vec,
652 int attribute((unused)) nvec) {
653 disable_random(c->who);
654 sink_writes(ev_writer_sink(c->w), "250 OK\n");
655 return 1; /* completed */
658 static int c_random_enabled(struct conn *c,
659 char attribute((unused)) **vec,
660 int attribute((unused)) nvec) {
661 sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]);
662 return 1; /* completed */
665 static int c_stats(struct conn *c,
666 char attribute((unused)) **vec,
667 int attribute((unused)) nvec) {
671 v = trackdb_stats(&nv);
672 sink_printf(ev_writer_sink(c->w), "253 stats\n");
673 for(n = 0; n < nv; ++n) {
675 sink_writes(ev_writer_sink(c->w), ".");
676 sink_printf(ev_writer_sink(c->w), "%s\n", v[n]);
678 sink_writes(ev_writer_sink(c->w), ".\n");
682 static int c_volume(struct conn *c,
693 l = r = atoi(vec[0]);
704 if(mixer_control(&l, &r, set))
705 sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n");
707 sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r);
708 if(l != volume_left || r != volume_right) {
711 snprintf(lb, sizeof lb, "%d", l);
712 snprintf(rb, sizeof rb, "%d", r);
713 eventlog("volume", lb, rb, (char *)0);
719 /* we are logging, and some data is available to read */
720 static int logging_reader_callback(ev_source *ev,
729 /* don't log to this conn any more */
730 eventlog_remove(c->lo);
731 /* terminate the log output */
732 sink_writes(ev_writer_sink(c->w), ".\n");
733 /* restore the reader callback */
734 c->reader = reader_callback;
735 /* ...and exit via it */
736 return c->reader(ev, reader, fd, ptr, bytes, eof, u);
739 static void logclient(const char *msg, void *user) {
740 struct conn *c = user;
742 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n",
743 (uintmax_t)time(0), msg);
746 static int c_log(struct conn *c,
747 char attribute((unused)) **vec,
748 int attribute((unused)) nvec) {
751 sink_writes(ev_writer_sink(c->w), "254 OK\n");
752 /* pump out initial state */
754 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
756 playing_is_enabled() ? "enable_play" : "disable_play");
757 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
759 random_is_enabled() ? "enable_random" : "disable_random");
760 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n",
762 paused ? "pause" : "resume");
764 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n",
767 sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n",
768 (uintmax_t)now, volume_left, volume_right);
769 c->lo = xmalloc(sizeof *c->lo);
770 c->lo->fn = logclient;
773 c->reader = logging_reader_callback;
777 static void post_move_cleanup(void) {
778 struct queue_entry *q;
780 /* If we have caused the random track to not be at the end then we make it no
781 * longer be random. */
782 for(q = qhead.next; q != &qhead; q = q->next)
783 if(q->state == playing_random && q->next != &qhead)
784 q->state = playing_unplayed;
785 /* That might mean we need to add a new random track. */
790 static int c_move(struct conn *c,
792 int attribute((unused)) nvec) {
793 struct queue_entry *q;
796 if(config->restrictions & RESTRICT_MOVE) {
798 sink_writes(ev_writer_sink(c->w),
799 "550 only trusted users can move tracks\n");
803 if(!(q = queue_find(vec[0]))) {
804 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
807 n = queue_move(q, atoi(vec[1]), c->who);
809 sink_printf(ev_writer_sink(c->w), "252 %d\n", n);
810 /* If we've moved to the head of the queue then prepare the track. */
816 static int c_moveafter(struct conn *c,
818 int attribute((unused)) nvec) {
819 struct queue_entry *q, **qs;
822 if(config->restrictions & RESTRICT_MOVE) {
824 sink_writes(ev_writer_sink(c->w),
825 "550 only trusted users can move tracks\n");
830 if(!(q = queue_find(vec[0]))) {
831 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
838 qs = xcalloc(nvec, sizeof *qs);
839 for(n = 0; n < nvec; ++n)
840 if(!(qs[n] = queue_find(vec[n]))) {
841 sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n");
844 queue_moveafter(q, nvec, qs, c->who);
846 sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n");
847 /* If we've moved to the head of the queue then prepare the track. */
853 static int c_part(struct conn *c,
855 int attribute((unused)) nvec) {
856 sink_printf(ev_writer_sink(c->w), "252 %s\n",
857 trackdb_getpart(vec[0], vec[1], vec[2]));
861 static int c_resolve(struct conn *c,
863 int attribute((unused)) nvec) {
866 if(!(track = trackdb_resolve(vec[0]))) {
867 sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n");
870 sink_printf(ev_writer_sink(c->w), "252 %s\n", track);
874 static int c_tags(struct conn *c,
875 char attribute((unused)) **vec,
876 int attribute((unused)) nvec) {
877 char **tags = trackdb_alltags();
879 sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n");
881 sink_printf(ev_writer_sink(c->w), "%s%s\n",
882 **tags == '.' ? "." : "", *tags);
885 sink_writes(ev_writer_sink(c->w), ".\n");
886 return 1; /* completed */
890 static int c_set_global(struct conn *c,
892 int attribute((unused)) nvec) {
893 trackdb_set_global(vec[0], vec[1], c->who);
894 sink_printf(ev_writer_sink(c->w), "250 OK\n");
898 static int c_get_global(struct conn *c,
900 int attribute((unused)) nvec) {
901 const char *s = trackdb_get_global(vec[0]);
904 sink_printf(ev_writer_sink(c->w), "252 %s\n", s);
906 sink_writes(ev_writer_sink(c->w), "550 not found\n");
910 static int c_nop(struct conn *c,
911 char attribute((unused)) **vec,
912 int attribute((unused)) nvec) {
913 sink_printf(ev_writer_sink(c->w), "250 Quack\n");
917 static int c_new(struct conn *c,
920 char **tracks = trackdb_new(0, nvec > 0 ? atoi(vec[0]) : INT_MAX);
922 sink_printf(ev_writer_sink(c->w), "253 New track list follows\n");
924 sink_printf(ev_writer_sink(c->w), "%s%s\n",
925 **tracks == '.' ? "." : "", *tracks);
928 sink_writes(ev_writer_sink(c->w), ".\n");
929 return 1; /* completed */
933 static int c_rtp_address(struct conn *c,
934 char attribute((unused)) **vec,
935 int attribute((unused)) nvec) {
936 if(config->speaker_backend == BACKEND_NETWORK) {
937 sink_printf(ev_writer_sink(c->w), "252 %s %s\n",
938 quoteutf8(config->broadcast.s[0]),
939 quoteutf8(config->broadcast.s[1]));
941 sink_writes(ev_writer_sink(c->w), "550 No RTP\n");
945 #define C_AUTH 0001 /* must be authenticated */
946 #define C_TRUSTED 0002 /* must be trusted user */
948 static const struct command {
950 int minargs, maxargs;
951 int (*fn)(struct conn *, char **, int);
954 { "allfiles", 0, 2, c_allfiles, C_AUTH },
955 { "become", 1, 1, c_become, C_AUTH|C_TRUSTED },
956 { "dirs", 0, 2, c_dirs, C_AUTH },
957 { "disable", 0, 1, c_disable, C_AUTH },
958 { "enable", 0, 0, c_enable, C_AUTH },
959 { "enabled", 0, 0, c_enabled, C_AUTH },
960 { "exists", 1, 1, c_exists, C_AUTH },
961 { "files", 0, 2, c_files, C_AUTH },
962 { "get", 2, 2, c_get, C_AUTH },
963 { "get-global", 1, 1, c_get_global, C_AUTH },
964 { "length", 1, 1, c_length, C_AUTH },
965 { "log", 0, 0, c_log, C_AUTH },
966 { "move", 2, 2, c_move, C_AUTH },
967 { "moveafter", 1, INT_MAX, c_moveafter, C_AUTH },
968 { "new", 0, 1, c_new, C_AUTH },
969 { "nop", 0, 0, c_nop, C_AUTH },
970 { "part", 3, 3, c_part, C_AUTH },
971 { "pause", 0, 0, c_pause, C_AUTH },
972 { "play", 1, 1, c_play, C_AUTH },
973 { "playing", 0, 0, c_playing, C_AUTH },
974 { "prefs", 1, 1, c_prefs, C_AUTH },
975 { "queue", 0, 0, c_queue, C_AUTH },
976 { "random-disable", 0, 0, c_random_disable, C_AUTH },
977 { "random-enable", 0, 0, c_random_enable, C_AUTH },
978 { "random-enabled", 0, 0, c_random_enabled, C_AUTH },
979 { "recent", 0, 0, c_recent, C_AUTH },
980 { "reconfigure", 0, 0, c_reconfigure, C_AUTH|C_TRUSTED },
981 { "remove", 1, 1, c_remove, C_AUTH },
982 { "rescan", 0, 0, c_rescan, C_AUTH|C_TRUSTED },
983 { "resolve", 1, 1, c_resolve, C_AUTH },
984 { "resume", 0, 0, c_resume, C_AUTH },
985 { "rtp-address", 0, 0, c_rtp_address, C_AUTH },
986 { "scratch", 0, 1, c_scratch, C_AUTH },
987 { "search", 1, 1, c_search, C_AUTH },
988 { "set", 3, 3, c_set, C_AUTH, },
989 { "set-global", 2, 2, c_set_global, C_AUTH },
990 { "shutdown", 0, 0, c_shutdown, C_AUTH|C_TRUSTED },
991 { "stats", 0, 0, c_stats, C_AUTH },
992 { "tags", 0, 0, c_tags, C_AUTH },
993 { "unset", 2, 2, c_set, C_AUTH },
994 { "unset-global", 1, 1, c_set_global, C_AUTH },
995 { "user", 2, 2, c_user, 0 },
996 { "version", 0, 0, c_version, C_AUTH },
997 { "volume", 0, 2, c_volume, C_AUTH }
1000 static void command_error(const char *msg, void *u) {
1003 sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg);
1006 /* process a command. Return 1 if complete, 0 if incomplete. */
1007 static int command(struct conn *c, char *line) {
1011 D(("server command %s", line));
1012 if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) {
1013 sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n");
1017 sink_writes(ev_writer_sink(c->w), "500 do what?\n");
1020 if((n = TABLE_FIND(commands, struct command, name, vec[0])) < 0)
1021 sink_writes(ev_writer_sink(c->w), "500 unknown command\n");
1023 if((commands[n].flags & C_AUTH) && !c->who) {
1024 sink_writes(ev_writer_sink(c->w), "530 not authenticated\n");
1027 if((commands[n].flags & C_TRUSTED) && !trusted(c)) {
1028 sink_writes(ev_writer_sink(c->w), "530 insufficient privilege\n");
1033 if(nvec < commands[n].minargs) {
1034 sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n");
1037 if(nvec > commands[n].maxargs) {
1038 sink_writes(ev_writer_sink(c->w), "500 too many arguments\n");
1041 return commands[n].fn(c, vec, nvec);
1043 return 1; /* completed */
1046 /* redirect to the right reader callback for our current state */
1047 static int redirect_reader_callback(ev_source *ev,
1056 return c->reader(ev, reader, fd, ptr, bytes, eof, u);
1059 /* the main command reader */
1060 static int reader_callback(ev_source attribute((unused)) *ev,
1062 int attribute((unused)) fd,
1071 D(("server reader_callback"));
1072 while((eol = memchr(ptr, '\n', bytes))) {
1074 ev_reader_consume(reader, eol - (char *)ptr);
1075 complete = command(c, ptr);
1076 bytes -= (eol - (char *)ptr);
1079 /* the command had better have set a new reader callback */
1081 /* there are further bytes to read, or we are at eof; arrange for the
1082 * command's reader callback to handle them */
1083 return ev_reader_incomplete(reader);
1084 /* nothing's going on right now */
1087 /* command completed, we can go around and handle the next one */
1091 error(0, "S%x unterminated line", c->tag);
1093 return ev_writer_close(c->w);
1098 static int listen_callback(ev_source *ev,
1100 const struct sockaddr attribute((unused)) *remote,
1101 socklen_t attribute((unused)) rlen,
1103 const struct listener *l = u;
1104 struct conn *c = xmalloc(sizeof *c);
1105 static unsigned tags;
1107 D(("server listen_callback fd %d (%s)", fd, l->name));
1112 c->w = ev_writer_new(ev, fd, writer_error, c);
1113 c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c);
1115 c->reader = reader_callback;
1117 gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM);
1118 if(!strcmp(config->authorization_algorithm, "sha1")
1119 || !strcmp(config->authorization_algorithm, "SHA1")) {
1120 sink_printf(ev_writer_sink(c->w), "231 %s\n",
1121 hex(c->nonce, sizeof c->nonce));
1123 sink_printf(ev_writer_sink(c->w), "231 %s %s\n",
1124 config->authorization_algorithm,
1125 hex(c->nonce, sizeof c->nonce));
1130 int server_start(ev_source *ev, int pf,
1131 size_t socklen, const struct sockaddr *sa,
1134 struct listener *l = xmalloc(sizeof *l);
1135 static const int one = 1;
1137 D(("server_init socket %s", name));
1138 fd = xsocket(pf, SOCK_STREAM, 0);
1139 xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one);
1140 if(bind(fd, sa, socklen) < 0) {
1141 error(errno, "error binding to %s", name);
1149 if(ev_listen(ev, fd, listen_callback, l)) exit(EXIT_FAILURE);
1153 int server_stop(ev_source *ev, int fd) {
1155 return ev_listen_cancel(ev, fd);