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 void got_stats(char *stats
, void *u
) {
669 struct conn
*const c
= u
;
671 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
672 /* Now we can start processing commands again */
673 ev_reader_enable(c
->r
);
676 static int c_stats(struct conn
*c
,
677 char attribute((unused
)) **vec
,
678 int attribute((unused
)) nvec
) {
679 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
680 return 0; /* not yet complete */
683 static int c_volume(struct conn
*c
,
694 l
= r
= atoi(vec
[0]);
705 if(mixer_control(&l
, &r
, set
))
706 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
708 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
709 if(l
!= volume_left
|| r
!= volume_right
) {
712 snprintf(lb
, sizeof lb
, "%d", l
);
713 snprintf(rb
, sizeof rb
, "%d", r
);
714 eventlog("volume", lb
, rb
, (char *)0);
720 /* we are logging, and some data is available to read */
721 static int logging_reader_callback(ev_source
*ev
,
730 /* don't log to this conn any more */
731 eventlog_remove(c
->lo
);
732 /* terminate the log output */
733 sink_writes(ev_writer_sink(c
->w
), ".\n");
734 /* restore the reader callback */
735 c
->reader
= reader_callback
;
736 /* ...and exit via it */
737 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
740 static void logclient(const char *msg
, void *user
) {
741 struct conn
*c
= user
;
743 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
744 (uintmax_t)time(0), msg
);
747 static int c_log(struct conn
*c
,
748 char attribute((unused
)) **vec
,
749 int attribute((unused
)) nvec
) {
752 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
753 /* pump out initial state */
755 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
757 playing_is_enabled() ?
"enable_play" : "disable_play");
758 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
760 random_is_enabled() ?
"enable_random" : "disable_random");
761 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
763 paused ?
"pause" : "resume");
765 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
768 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
769 (uintmax_t)now
, volume_left
, volume_right
);
770 c
->lo
= xmalloc(sizeof *c
->lo
);
771 c
->lo
->fn
= logclient
;
774 c
->reader
= logging_reader_callback
;
778 static void post_move_cleanup(void) {
779 struct queue_entry
*q
;
781 /* If we have caused any random tracks to not be at the end then we make them
782 * no longer be random. */
783 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
)
784 if(q
->state
== playing_random
&& q
->next
!= &qhead
)
785 q
->state
= playing_unplayed
;
786 /* That might mean we need to add a new random track. */
791 static int c_move(struct conn
*c
,
793 int attribute((unused
)) nvec
) {
794 struct queue_entry
*q
;
797 if(config
->restrictions
& RESTRICT_MOVE
) {
799 sink_writes(ev_writer_sink(c
->w
),
800 "550 only trusted users can move tracks\n");
804 if(!(q
= queue_find(vec
[0]))) {
805 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
808 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
810 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
811 /* If we've moved to the head of the queue then prepare the track. */
817 static int c_moveafter(struct conn
*c
,
819 int attribute((unused
)) nvec
) {
820 struct queue_entry
*q
, **qs
;
823 if(config
->restrictions
& RESTRICT_MOVE
) {
825 sink_writes(ev_writer_sink(c
->w
),
826 "550 only trusted users can move tracks\n");
831 if(!(q
= queue_find(vec
[0]))) {
832 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
839 qs
= xcalloc(nvec
, sizeof *qs
);
840 for(n
= 0; n
< nvec
; ++n
)
841 if(!(qs
[n
] = queue_find(vec
[n
]))) {
842 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
845 queue_moveafter(q
, nvec
, qs
, c
->who
);
847 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
848 /* If we've moved to the head of the queue then prepare the track. */
854 static int c_part(struct conn
*c
,
856 int attribute((unused
)) nvec
) {
857 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
858 trackdb_getpart(vec
[0], vec
[1], vec
[2]));
862 static int c_resolve(struct conn
*c
,
864 int attribute((unused
)) nvec
) {
867 if(!(track
= trackdb_resolve(vec
[0]))) {
868 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
871 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", track
);
875 static int c_tags(struct conn
*c
,
876 char attribute((unused
)) **vec
,
877 int attribute((unused
)) nvec
) {
878 char **tags
= trackdb_alltags();
880 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
882 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
883 **tags
== '.' ?
"." : "", *tags
);
886 sink_writes(ev_writer_sink(c
->w
), ".\n");
887 return 1; /* completed */
891 static int c_set_global(struct conn
*c
,
893 int attribute((unused
)) nvec
) {
894 trackdb_set_global(vec
[0], vec
[1], c
->who
);
895 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
899 static int c_get_global(struct conn
*c
,
901 int attribute((unused
)) nvec
) {
902 const char *s
= trackdb_get_global(vec
[0]);
905 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", s
);
907 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
911 static int c_nop(struct conn
*c
,
912 char attribute((unused
)) **vec
,
913 int attribute((unused
)) nvec
) {
914 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
918 static int c_new(struct conn
*c
,
921 char **tracks
= trackdb_new(0, nvec
> 0 ?
atoi(vec
[0]) : INT_MAX
);
923 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
925 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
926 **tracks
== '.' ?
"." : "", *tracks
);
929 sink_writes(ev_writer_sink(c
->w
), ".\n");
930 return 1; /* completed */
934 static int c_rtp_address(struct conn
*c
,
935 char attribute((unused
)) **vec
,
936 int attribute((unused
)) nvec
) {
937 if(config
->speaker_backend
== BACKEND_NETWORK
) {
938 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
939 quoteutf8(config
->broadcast
.s
[0]),
940 quoteutf8(config
->broadcast
.s
[1]));
942 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
946 #define C_AUTH 0001 /* must be authenticated */
947 #define C_TRUSTED 0002 /* must be trusted user */
949 static const struct command
{
951 int minargs
, maxargs
;
952 int (*fn
)(struct conn
*, char **, int);
955 { "allfiles", 0, 2, c_allfiles
, C_AUTH
},
956 { "become", 1, 1, c_become
, C_AUTH
|C_TRUSTED
},
957 { "dirs", 0, 2, c_dirs
, C_AUTH
},
958 { "disable", 0, 1, c_disable
, C_AUTH
},
959 { "enable", 0, 0, c_enable
, C_AUTH
},
960 { "enabled", 0, 0, c_enabled
, C_AUTH
},
961 { "exists", 1, 1, c_exists
, C_AUTH
},
962 { "files", 0, 2, c_files
, C_AUTH
},
963 { "get", 2, 2, c_get
, C_AUTH
},
964 { "get-global", 1, 1, c_get_global
, C_AUTH
},
965 { "length", 1, 1, c_length
, C_AUTH
},
966 { "log", 0, 0, c_log
, C_AUTH
},
967 { "move", 2, 2, c_move
, C_AUTH
},
968 { "moveafter", 1, INT_MAX
, c_moveafter
, C_AUTH
},
969 { "new", 0, 1, c_new
, C_AUTH
},
970 { "nop", 0, 0, c_nop
, C_AUTH
},
971 { "part", 3, 3, c_part
, C_AUTH
},
972 { "pause", 0, 0, c_pause
, C_AUTH
},
973 { "play", 1, 1, c_play
, C_AUTH
},
974 { "playing", 0, 0, c_playing
, C_AUTH
},
975 { "prefs", 1, 1, c_prefs
, C_AUTH
},
976 { "queue", 0, 0, c_queue
, C_AUTH
},
977 { "random-disable", 0, 0, c_random_disable
, C_AUTH
},
978 { "random-enable", 0, 0, c_random_enable
, C_AUTH
},
979 { "random-enabled", 0, 0, c_random_enabled
, C_AUTH
},
980 { "recent", 0, 0, c_recent
, C_AUTH
},
981 { "reconfigure", 0, 0, c_reconfigure
, C_AUTH
|C_TRUSTED
},
982 { "remove", 1, 1, c_remove
, C_AUTH
},
983 { "rescan", 0, 0, c_rescan
, C_AUTH
|C_TRUSTED
},
984 { "resolve", 1, 1, c_resolve
, C_AUTH
},
985 { "resume", 0, 0, c_resume
, C_AUTH
},
986 { "rtp-address", 0, 0, c_rtp_address
, C_AUTH
},
987 { "scratch", 0, 1, c_scratch
, C_AUTH
},
988 { "search", 1, 1, c_search
, C_AUTH
},
989 { "set", 3, 3, c_set
, C_AUTH
, },
990 { "set-global", 2, 2, c_set_global
, C_AUTH
},
991 { "shutdown", 0, 0, c_shutdown
, C_AUTH
|C_TRUSTED
},
992 { "stats", 0, 0, c_stats
, C_AUTH
},
993 { "tags", 0, 0, c_tags
, C_AUTH
},
994 { "unset", 2, 2, c_set
, C_AUTH
},
995 { "unset-global", 1, 1, c_set_global
, C_AUTH
},
996 { "user", 2, 2, c_user
, 0 },
997 { "version", 0, 0, c_version
, C_AUTH
},
998 { "volume", 0, 2, c_volume
, C_AUTH
}
1001 static void command_error(const char *msg
, void *u
) {
1004 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1007 /* process a command. Return 1 if complete, 0 if incomplete. */
1008 static int command(struct conn
*c
, char *line
) {
1012 D(("server command %s", line
));
1013 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1014 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1018 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1021 if((n
= TABLE_FIND(commands
, struct command
, name
, vec
[0])) < 0)
1022 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1024 if((commands
[n
].flags
& C_AUTH
) && !c
->who
) {
1025 sink_writes(ev_writer_sink(c
->w
), "530 not authenticated\n");
1028 if((commands
[n
].flags
& C_TRUSTED
) && !trusted(c
)) {
1029 sink_writes(ev_writer_sink(c
->w
), "530 insufficient privilege\n");
1034 if(nvec
< commands
[n
].minargs
) {
1035 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1038 if(nvec
> commands
[n
].maxargs
) {
1039 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1042 return commands
[n
].fn(c
, vec
, nvec
);
1044 return 1; /* completed */
1047 /* redirect to the right reader callback for our current state */
1048 static int redirect_reader_callback(ev_source
*ev
,
1057 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
1060 /* the main command reader */
1061 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1063 int attribute((unused
)) fd
,
1072 D(("server reader_callback"));
1073 while((eol
= memchr(ptr
, '\n', bytes
))) {
1075 ev_reader_consume(reader
, eol
- (char *)ptr
);
1076 complete
= command(c
, ptr
);
1077 bytes
-= (eol
- (char *)ptr
);
1080 /* the command had better have set a new reader callback */
1082 /* there are further bytes to read, or we are at eof; arrange for the
1083 * command's reader callback to handle them */
1084 return ev_reader_incomplete(reader
);
1085 /* nothing's going on right now */
1088 /* command completed, we can go around and handle the next one */
1092 error(0, "S%x unterminated line", c
->tag
);
1094 return ev_writer_close(c
->w
);
1099 static int listen_callback(ev_source
*ev
,
1101 const struct sockaddr
attribute((unused
)) *remote
,
1102 socklen_t
attribute((unused
)) rlen
,
1104 const struct listener
*l
= u
;
1105 struct conn
*c
= xmalloc(sizeof *c
);
1106 static unsigned tags
;
1108 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1113 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
1115 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
1118 c
->reader
= reader_callback
;
1120 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1121 if(!strcmp(config
->authorization_algorithm
, "sha1")
1122 || !strcmp(config
->authorization_algorithm
, "SHA1")) {
1123 sink_printf(ev_writer_sink(c
->w
), "231 %s\n",
1124 hex(c
->nonce
, sizeof c
->nonce
));
1126 sink_printf(ev_writer_sink(c
->w
), "231 %s %s\n",
1127 config
->authorization_algorithm
,
1128 hex(c
->nonce
, sizeof c
->nonce
));
1133 int server_start(ev_source
*ev
, int pf
,
1134 size_t socklen
, const struct sockaddr
*sa
,
1137 struct listener
*l
= xmalloc(sizeof *l
);
1138 static const int one
= 1;
1140 D(("server_init socket %s", name
));
1141 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1142 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1143 if(bind(fd
, sa
, socklen
) < 0) {
1144 error(errno
, "error binding to %s", name
);
1152 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
1157 int server_stop(ev_source
*ev
, int fd
) {
1159 return ev_listen_cancel(ev
, fd
);