89ff5abc8163f133059ee39486542b86193fca4f
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 */
84 unsigned char nonce
[NONCE_SIZE
];
85 ev_reader_callback
*reader
;
86 struct eventlog_output
*lo
;
87 const struct listener
*l
;
90 static int reader_callback(ev_source
*ev
,
98 static const char *noyes
[] = { "no", "yes" };
100 static int writer_error(ev_source
attribute((unused
)) *ev
,
106 D(("server writer_error %d %d", fd
, errno_value
));
107 if(errno_value
== 0) {
111 D(("server writer_error closes %d", fd
));
112 xclose(fd
); /* reader is done too, close */
114 D(("server writer_error shutdown %d SHUT_WR", fd
));
115 xshutdown(fd
, SHUT_WR
); /* reader is not done yet */
118 if(errno_value
!= EPIPE
)
119 error(errno_value
, "S%x write error on socket", c
->tag
);
121 ev_reader_cancel(c
->r
);
127 static int reader_error(ev_source
attribute((unused
)) *ev
,
133 D(("server reader_error %d %d", fd
, errno_value
));
134 error(errno
, "S%x read error on socket", c
->tag
);
135 ev_writer_cancel(c
->w
);
140 /* return true if we are talking to a trusted user */
141 static int trusted(struct conn
*c
) {
144 for(n
= 0; (n
< config
->trust
.n
145 && strcmp(config
->trust
.s
[n
], c
->who
)); ++n
)
147 return n
< config
->trust
.n
;
150 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
152 disable_playing(c
->who
);
153 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
154 disable_playing(c
->who
);
156 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
157 return 1; /* completed */
159 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
160 return 1; /* completed */
163 static 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 */
173 static 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 */
180 static int c_play(struct conn
*c
, char **vec
,
181 int attribute((unused
)) nvec
) {
183 struct queue_entry
*q
;
185 if(!trackdb_exists(vec
[0])) {
186 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
189 if(!(track
= trackdb_resolve(vec
[0]))) {
190 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
193 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
);
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
198 if(q
== qhead
.next
&& playing
)
200 sink_writes(ev_writer_sink(c
->w
), "250 queued\n");
201 /* If the queue was empty but we are for some reason paused then
203 if(!playing
) resume_playing(0);
205 return 1; /* completed */
208 static int c_remove(struct conn
*c
, char **vec
,
209 int attribute((unused
)) nvec
) {
210 struct queue_entry
*q
;
212 if(!(q
= queue_find(vec
[0]))) {
213 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
216 if(config
->restrictions
& RESTRICT_REMOVE
) {
217 /* can only remove tracks that you submitted */
218 if(!q
->submitter
|| strcmp(q
->submitter
, c
->who
)) {
219 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
223 queue_remove(q
, c
->who
);
224 /* De-prepare the track. */
226 /* If we removed the random track then add another one. */
227 if(q
->state
== playing_random
)
229 /* Prepare whatever the next head track is. */
230 if(qhead
.next
!= &qhead
)
231 prepare(c
->ev
, qhead
.next
);
233 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
234 return 1; /* completed */
237 static int c_scratch(struct conn
*c
,
241 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
242 return 1; /* completed */
244 if(config
->restrictions
& RESTRICT_SCRATCH
) {
245 /* can only scratch tracks you submitted and randomly selected ones */
246 if(playing
->submitter
&& strcmp(playing
->submitter
, c
->who
)) {
247 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
251 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
252 /* If you scratch an unpaused track then it is automatically unpaused */
254 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
255 return 1; /* completed */
258 static int c_pause(struct conn
*c
,
259 char attribute((unused
)) **vec
,
260 int attribute((unused
)) nvec
) {
262 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
263 return 1; /* completed */
266 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
267 return 1; /* completed */
269 if(pause_playing(c
->who
) < 0)
270 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
272 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
276 static int c_resume(struct conn
*c
,
277 char attribute((unused
)) **vec
,
278 int attribute((unused
)) nvec
) {
280 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
281 return 1; /* completed */
283 resume_playing(c
->who
);
284 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
288 static 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
);
297 static 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");
304 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
305 return 1; /* completed */
308 static int c_rescan(struct conn
*c
,
309 char attribute((unused
)) **vec
,
310 int attribute((unused
)) nvec
) {
311 info("S%x rescan by %s", c
->tag
, c
->who
);
312 trackdb_rescan(c
->ev
);
313 sink_writes(ev_writer_sink(c
->w
), "250 initiated rescan\n");
314 return 1; /* completed */
317 static int c_version(struct conn
*c
,
318 char attribute((unused
)) **vec
,
319 int attribute((unused
)) nvec
) {
320 /* VERSION had better only use the basic character set */
321 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_version_string
);
322 return 1; /* completed */
325 static int c_playing(struct conn
*c
,
326 char attribute((unused
)) **vec
,
327 int attribute((unused
)) nvec
) {
329 queue_fix_sofar(playing
);
330 playing
->expected
= 0;
331 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
333 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
334 return 1; /* completed */
337 static int c_become(struct conn
*c
,
339 int attribute((unused
)) nvec
) {
341 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
345 static int c_user(struct conn
*c
,
347 int attribute((unused
)) nvec
) {
352 struct sockaddr_in in
;
353 struct sockaddr_in6 in6
;
359 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
362 /* get connection data */
364 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
365 error(errno
, "S%x error calling getpeername", c
->tag
);
366 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
369 if(c
->l
->pf
!= PF_UNIX
) {
370 if((n
= getnameinfo(&u
.sa
, l
,
371 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
372 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
373 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
378 for(n
= 0; n
< config
->allow
.n
379 && strcmp(config
->allow
.s
[n
].s
[0], vec
[0]); ++n
)
381 /* if it's a real user check whether the response is right */
382 if(n
< config
->allow
.n
) {
383 res
= authhash(c
->nonce
, sizeof c
->nonce
, config
->allow
.s
[n
].s
[1]);
384 if(res
&& !strcmp(res
, vec
[1])) {
386 /* currently we only bother logging remote connections */
387 if(c
->l
->pf
!= PF_UNIX
)
388 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
389 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
393 /* oops, response was wrong */
394 if(c
->l
->pf
!= PF_UNIX
)
395 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
397 info("S%x authentication failure for %s", c
->tag
, vec
[0]);
398 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
402 static int c_recent(struct conn
*c
,
403 char attribute((unused
)) **vec
,
404 int attribute((unused
)) nvec
) {
405 const struct queue_entry
*q
;
407 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
408 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
409 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
410 sink_writes(ev_writer_sink(c
->w
), ".\n");
411 return 1; /* completed */
414 static int c_queue(struct conn
*c
,
415 char attribute((unused
)) **vec
,
416 int attribute((unused
)) nvec
) {
417 struct queue_entry
*q
;
422 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
423 if(playing_is_enabled() && !paused
) {
425 queue_fix_sofar(playing
);
426 if((l
= trackdb_get(playing
->track
, "_length"))
427 && (length
= atol(l
))) {
429 when
+= length
- playing
->sofar
+ config
->gap
;
432 /* Nothing is playing but playing is enabled, so whatever is
433 * first in the queue can be expected to start immediately. */
436 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
437 /* fill in estimated start time */
439 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
440 /* update for next track */
442 if((l
= trackdb_get(q
->track
, "_length"))
443 && (length
= atol(l
)))
444 when
+= length
+ config
->gap
;
449 sink_writes(ev_writer_sink(c
->w
), ".\n");
450 return 1; /* completed */
453 static int output_list(struct conn
*c
, char **vec
) {
455 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
456 sink_writes(ev_writer_sink(c
->w
), ".\n");
460 static int files_dirs(struct conn
*c
,
463 enum trackdb_listable what
) {
464 const char *dir
, *re
, *errstr
;
470 case 0: dir
= 0; re
= 0; break;
471 case 1: dir
= vec
[0]; re
= 0; break;
472 case 2: dir
= vec
[0]; re
= vec
[1]; break;
475 /* A bit of a bodge to make sure the args don't trample on cache keys */
476 if(dir
&& strchr(dir
, '\n')) {
477 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
480 if(re
&& strchr(re
, '\n')) {
481 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
484 /* We bother eliminating "" because the web interface is relatively
485 * likely to send it */
487 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
488 fvec
= (char **)cache_get(&cache_files_type
, key
);
490 /* Got a cache hit, don't store the answer in the cache */
493 rec
= 0; /* quieten compiler */
495 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
497 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
498 &errstr
, &erroffset
, 0))) {
499 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
503 /* It only counts as a miss if the regexp was valid. */
504 ++cache_files_misses
;
507 /* No regexp, don't bother caching the result */
513 /* No cache hit (either because a miss, or because we did not look) so do
516 fvec
= trackdb_list(dir
, 0, what
, rec
);
518 fvec
= trackdb_list(0, 0, what
, rec
);
521 /* Put the answer in the cache */
522 cache_put(&cache_files_type
, key
, fvec
);
523 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
524 return output_list(c
, fvec
);
527 static int c_files(struct conn
*c
,
530 return files_dirs(c
, vec
, nvec
, trackdb_files
);
533 static int c_dirs(struct conn
*c
,
536 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
539 static int c_allfiles(struct conn
*c
,
542 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
545 static int c_get(struct conn
*c
,
547 int attribute((unused
)) nvec
) {
550 if(vec
[1][0] != '_' && (v
= trackdb_get(vec
[0], vec
[1])))
551 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
553 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
557 static int c_length(struct conn
*c
,
559 int attribute((unused
)) nvec
) {
560 const char *track
, *v
;
562 if(!(track
= trackdb_resolve(vec
[0]))) {
563 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
566 if((v
= trackdb_get(track
, "_length")))
567 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
569 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
573 static int c_set(struct conn
*c
,
575 int attribute((unused
)) nvec
) {
576 if(vec
[1][0] != '_' && !trackdb_set(vec
[0], vec
[1], vec
[2]))
577 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
579 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
583 static int c_prefs(struct conn
*c
,
585 int attribute((unused
)) nvec
) {
588 k
= trackdb_get_all(vec
[0]);
589 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
590 for(; k
; k
= k
->next
)
591 if(k
->name
[0] != '_') /* omit internal values */
592 sink_printf(ev_writer_sink(c
->w
),
593 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
594 sink_writes(ev_writer_sink(c
->w
), ".\n");
598 static int c_exists(struct conn
*c
,
600 int attribute((unused
)) nvec
) {
601 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
605 static void search_parse_error(const char *msg
, void *u
) {
606 *(const char **)u
= msg
;
609 static int c_search(struct conn
*c
,
611 int attribute((unused
)) nvec
) {
612 char **terms
, **results
;
613 int nterms
, nresults
, n
;
614 const char *e
= "unknown error";
616 /* This is a bit of a bodge. Initially it's there to make the eclient
617 * interface a bit more convenient to add searching to, but it has the more
618 * compelling advantage that if everything uses it, then interpretation of
619 * user-supplied search strings will be the same everywhere. */
620 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
621 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
623 results
= trackdb_search(terms
, nterms
, &nresults
);
624 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
625 for(n
= 0; n
< nresults
; ++n
)
626 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
627 sink_writes(ev_writer_sink(c
->w
), ".\n");
632 static int c_random_enable(struct conn
*c
,
633 char attribute((unused
)) **vec
,
634 int attribute((unused
)) nvec
) {
635 enable_random(c
->who
, c
->ev
);
636 /* Enable implicitly unpauses if there is nothing playing */
637 if(paused
&& !playing
) resume_playing(c
->who
);
638 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
639 return 1; /* completed */
642 static int c_random_disable(struct conn
*c
,
643 char attribute((unused
)) **vec
,
644 int attribute((unused
)) nvec
) {
645 disable_random(c
->who
);
646 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
647 return 1; /* completed */
650 static int c_random_enabled(struct conn
*c
,
651 char attribute((unused
)) **vec
,
652 int attribute((unused
)) nvec
) {
653 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
654 return 1; /* completed */
657 static int c_stats(struct conn
*c
,
658 char attribute((unused
)) **vec
,
659 int attribute((unused
)) nvec
) {
663 v
= trackdb_stats(&nv
);
664 sink_printf(ev_writer_sink(c
->w
), "253 stats\n");
665 for(n
= 0; n
< nv
; ++n
) {
667 sink_writes(ev_writer_sink(c
->w
), ".");
668 sink_printf(ev_writer_sink(c
->w
), "%s\n", v
[n
]);
670 sink_writes(ev_writer_sink(c
->w
), ".\n");
674 static int c_volume(struct conn
*c
,
685 l
= r
= atoi(vec
[0]);
696 if(mixer_control(&l
, &r
, set
))
697 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
699 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
700 if(l
!= volume_left
|| r
!= volume_right
) {
703 snprintf(lb
, sizeof lb
, "%d", l
);
704 snprintf(rb
, sizeof rb
, "%d", r
);
705 eventlog("volume", lb
, rb
, (char *)0);
711 /* we are logging, and some data is available to read */
712 static int logging_reader_callback(ev_source
*ev
,
721 /* don't log to this conn any more */
722 eventlog_remove(c
->lo
);
723 /* terminate the log output */
724 sink_writes(ev_writer_sink(c
->w
), ".\n");
725 /* restore the reader callback */
726 c
->reader
= reader_callback
;
727 /* ...and exit via it */
728 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
731 static void logclient(const char *msg
, void *user
) {
732 struct conn
*c
= user
;
734 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
735 (uintmax_t)time(0), msg
);
738 static int c_log(struct conn
*c
,
739 char attribute((unused
)) **vec
,
740 int attribute((unused
)) nvec
) {
743 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
744 /* pump out initial state */
746 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
748 playing_is_enabled() ?
"enable_play" : "disable_play");
749 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
751 random_is_enabled() ?
"enable_random" : "disable_random");
752 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
754 paused ?
"pause" : "resume");
755 c
->lo
= xmalloc(sizeof *c
->lo
);
756 c
->lo
->fn
= logclient
;
759 c
->reader
= logging_reader_callback
;
763 static void post_move_cleanup(void) {
764 struct queue_entry
*q
;
766 /* If we have caused the random track to not be at the end then we make it no
767 * longer be random. */
768 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
)
769 if(q
->state
== playing_random
&& q
->next
!= &qhead
)
770 q
->state
= playing_unplayed
;
771 /* That might mean we need to add a new random track. */
776 static int c_move(struct conn
*c
,
778 int attribute((unused
)) nvec
) {
779 struct queue_entry
*q
;
782 if(config
->restrictions
& RESTRICT_MOVE
) {
784 sink_writes(ev_writer_sink(c
->w
),
785 "550 only trusted users can move tracks\n");
789 if(!(q
= queue_find(vec
[0]))) {
790 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
793 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
795 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
796 /* If we've moved to the head of the queue then prepare the track. */
802 static int c_moveafter(struct conn
*c
,
804 int attribute((unused
)) nvec
) {
805 struct queue_entry
*q
, **qs
;
808 if(config
->restrictions
& RESTRICT_MOVE
) {
810 sink_writes(ev_writer_sink(c
->w
),
811 "550 only trusted users can move tracks\n");
816 if(!(q
= queue_find(vec
[0]))) {
817 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
824 qs
= xcalloc(nvec
, sizeof *qs
);
825 for(n
= 0; n
< nvec
; ++n
)
826 if(!(qs
[n
] = queue_find(vec
[n
]))) {
827 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
830 queue_moveafter(q
, nvec
, qs
, c
->who
);
832 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
833 /* If we've moved to the head of the queue then prepare the track. */
839 static int c_part(struct conn
*c
,
841 int attribute((unused
)) nvec
) {
842 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
843 trackdb_getpart(vec
[0], vec
[1], vec
[2]));
847 static int c_resolve(struct conn
*c
,
849 int attribute((unused
)) nvec
) {
852 if(!(track
= trackdb_resolve(vec
[0]))) {
853 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
856 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", track
);
860 static int c_tags(struct conn
*c
,
861 char attribute((unused
)) **vec
,
862 int attribute((unused
)) nvec
) {
863 char **tags
= trackdb_alltags();
865 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
867 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
868 **tags
== '.' ?
"." : "", *tags
);
871 sink_writes(ev_writer_sink(c
->w
), ".\n");
872 return 1; /* completed */
876 static int c_set_global(struct conn
*c
,
878 int attribute((unused
)) nvec
) {
879 trackdb_set_global(vec
[0], vec
[1], c
->who
);
880 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
884 static int c_get_global(struct conn
*c
,
886 int attribute((unused
)) nvec
) {
887 const char *s
= trackdb_get_global(vec
[0]);
890 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", s
);
892 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
896 #define C_AUTH 0001 /* must be authenticated */
897 #define C_TRUSTED 0002 /* must be trusted user */
899 static const struct command
{
901 int minargs
, maxargs
;
902 int (*fn
)(struct conn
*, char **, int);
905 { "allfiles", 0, 2, c_allfiles
, C_AUTH
},
906 { "become", 1, 1, c_become
, C_AUTH
|C_TRUSTED
},
907 { "dirs", 0, 2, c_dirs
, C_AUTH
},
908 { "disable", 0, 1, c_disable
, C_AUTH
},
909 { "enable", 0, 0, c_enable
, C_AUTH
},
910 { "enabled", 0, 0, c_enabled
, C_AUTH
},
911 { "exists", 1, 1, c_exists
, C_AUTH
},
912 { "files", 0, 2, c_files
, C_AUTH
},
913 { "get", 2, 2, c_get
, C_AUTH
},
914 { "get-global", 1, 1, c_get_global
, C_AUTH
},
915 { "length", 1, 1, c_length
, C_AUTH
},
916 { "log", 0, 0, c_log
, C_AUTH
},
917 { "move", 2, 2, c_move
, C_AUTH
},
918 { "moveafter", 1, INT_MAX
, c_moveafter
, C_AUTH
},
919 { "part", 3, 3, c_part
, C_AUTH
},
920 { "pause", 0, 0, c_pause
, C_AUTH
},
921 { "play", 1, 1, c_play
, C_AUTH
},
922 { "playing", 0, 0, c_playing
, C_AUTH
},
923 { "prefs", 1, 1, c_prefs
, C_AUTH
},
924 { "queue", 0, 0, c_queue
, C_AUTH
},
925 { "random-disable", 0, 0, c_random_disable
, C_AUTH
},
926 { "random-enable", 0, 0, c_random_enable
, C_AUTH
},
927 { "random-enabled", 0, 0, c_random_enabled
, C_AUTH
},
928 { "recent", 0, 0, c_recent
, C_AUTH
},
929 { "reconfigure", 0, 0, c_reconfigure
, C_AUTH
|C_TRUSTED
},
930 { "remove", 1, 1, c_remove
, C_AUTH
},
931 { "rescan", 0, 0, c_rescan
, C_AUTH
|C_TRUSTED
},
932 { "resolve", 1, 1, c_resolve
, C_AUTH
},
933 { "resume", 0, 0, c_resume
, C_AUTH
},
934 { "scratch", 0, 1, c_scratch
, C_AUTH
},
935 { "search", 1, 1, c_search
, C_AUTH
},
936 { "set", 3, 3, c_set
, C_AUTH
, },
937 { "set-global", 2, 2, c_set_global
, C_AUTH
},
938 { "shutdown", 0, 0, c_shutdown
, C_AUTH
|C_TRUSTED
},
939 { "stats", 0, 0, c_stats
, C_AUTH
},
940 { "tags", 0, 0, c_tags
, C_AUTH
},
941 { "unset", 2, 2, c_set
, C_AUTH
},
942 { "unset-global", 1, 1, c_set_global
, C_AUTH
},
943 { "user", 2, 2, c_user
, 0 },
944 { "version", 0, 0, c_version
, C_AUTH
},
945 { "volume", 0, 2, c_volume
, C_AUTH
}
948 static void command_error(const char *msg
, void *u
) {
951 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
954 /* process a command. Return 1 if complete, 0 if incomplete. */
955 static int command(struct conn
*c
, char *line
) {
959 D(("server command %s", line
));
960 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
961 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
965 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
968 if((n
= TABLE_FIND(commands
, struct command
, name
, vec
[0])) < 0)
969 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
971 if((commands
[n
].flags
& C_AUTH
) && !c
->who
) {
972 sink_writes(ev_writer_sink(c
->w
), "530 not authenticated\n");
975 if((commands
[n
].flags
& C_TRUSTED
) && !trusted(c
)) {
976 sink_writes(ev_writer_sink(c
->w
), "530 insufficient privilege\n");
981 if(nvec
< commands
[n
].minargs
) {
982 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
985 if(nvec
> commands
[n
].maxargs
) {
986 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
989 return commands
[n
].fn(c
, vec
, nvec
);
991 return 1; /* completed */
994 /* redirect to the right reader callback for our current state */
995 static int redirect_reader_callback(ev_source
*ev
,
1004 return c
->reader(ev
, reader
, fd
, ptr
, bytes
, eof
, u
);
1007 /* the main command reader */
1008 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1010 int attribute((unused
)) fd
,
1019 D(("server reader_callback"));
1020 while((eol
= memchr(ptr
, '\n', bytes
))) {
1022 ev_reader_consume(reader
, eol
- (char *)ptr
);
1023 complete
= command(c
, ptr
);
1024 bytes
-= (eol
- (char *)ptr
);
1027 /* the command had better have set a new reader callback */
1029 /* there are further bytes to read, or we are at eof; arrange for the
1030 * command's reader callback to handle them */
1031 return ev_reader_incomplete(reader
);
1032 /* nothing's going on right now */
1035 /* command completed, we can go around and handle the next one */
1039 error(0, "S%x unterminated line", c
->tag
);
1041 return ev_writer_close(c
->w
);
1046 static int listen_callback(ev_source
*ev
,
1048 const struct sockaddr
attribute((unused
)) *remote
,
1049 socklen_t
attribute((unused
)) rlen
,
1051 const struct listener
*l
= u
;
1052 struct conn
*c
= xmalloc(sizeof *c
);
1053 static unsigned tags
;
1055 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1060 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
);
1061 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
);
1063 c
->reader
= reader_callback
;
1065 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1066 sink_printf(ev_writer_sink(c
->w
), "231 %s\n", hex(c
->nonce
, sizeof c
->nonce
));
1070 int server_start(ev_source
*ev
, int pf
,
1071 size_t socklen
, const struct sockaddr
*sa
,
1074 struct listener
*l
= xmalloc(sizeof *l
);
1075 static const int one
= 1;
1077 D(("server_init socket %s", name
));
1078 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1079 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1080 if(bind(fd
, sa
, socklen
) < 0) {
1081 error(errno
, "error binding to %s", name
);
1089 if(ev_listen(ev
, fd
, listen_callback
, l
)) exit(EXIT_FAILURE
);
1093 int server_stop(ev_source
*ev
, int fd
) {
1095 return ev_listen_cancel(ev
, fd
);
1105 /* arch-tag:eb9b30c87008880f3f53535101356ab5 */