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"
70 # define NONCE_SIZE 16
73 int volume_left
, volume_right
; /* last known volume */
75 /** @brief Accept all well-formed login attempts
86 /** @brief One client connection */
88 /** @brief Read commands from here */
90 /** @brief Send responses to here */
92 /** @brief Underlying file descriptor */
94 /** @brief Unique identifier for connection used in log messages */
96 /** @brief Login name or NULL */
98 /** @brief Event loop */
100 /** @brief Nonce chosen for this connection */
101 unsigned char nonce
[NONCE_SIZE
];
102 /** @brief Current reader callback
104 * We change this depending on whether we're servicing the @b log command
106 ev_reader_callback
*reader
;
107 /** @brief Event log output sending to this connection */
108 struct eventlog_output
*lo
;
109 /** @brief Parent listener */
110 const struct listener
*l
;
111 /** @brief Login cookie or NULL */
115 static int reader_callback(ev_source
*ev
,
122 static const char *noyes
[] = { "no", "yes" };
124 /** @brief Called when a connection's writer fails or is shut down
126 * If the connection still has a raeder that is cancelled.
128 static int writer_error(ev_source
attribute((unused
)) *ev
,
133 D(("server writer_error S%x %d", c
->tag
, errno_value
));
134 if(errno_value
== 0) {
136 D(("S%x writer completed", c
->tag
));
138 if(errno_value
!= EPIPE
)
139 error(errno_value
, "S%x write error on socket", c
->tag
);
141 D(("cancel reader"));
142 ev_reader_cancel(c
->r
);
145 D(("done cancel reader"));
152 /** @brief Called when a conncetion's reader fails or is shut down
154 * If connection still has a writer then it is closed.
156 static int reader_error(ev_source
attribute((unused
)) *ev
,
161 D(("server reader_error S%x %d", c
->tag
, errno_value
));
162 error(errno_value
, "S%x read error on socket", c
->tag
);
164 ev_writer_close(c
->w
);
171 /** @brief Return true if we are talking to a trusted user */
172 static int trusted(struct conn
*c
) {
175 for(n
= 0; (n
< config
->trust
.n
176 && strcmp(config
->trust
.s
[n
], c
->who
)); ++n
)
178 return n
< config
->trust
.n
;
181 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
183 disable_playing(c
->who
);
184 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
185 disable_playing(c
->who
);
187 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
188 return 1; /* completed */
190 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
191 return 1; /* completed */
194 static int c_enable(struct conn
*c
,
195 char attribute((unused
)) **vec
,
196 int attribute((unused
)) nvec
) {
197 enable_playing(c
->who
, c
->ev
);
198 /* Enable implicitly unpauses if there is nothing playing */
199 if(paused
&& !playing
) resume_playing(c
->who
);
200 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
201 return 1; /* completed */
204 static int c_enabled(struct conn
*c
,
205 char attribute((unused
)) **vec
,
206 int attribute((unused
)) nvec
) {
207 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
208 return 1; /* completed */
211 static int c_play(struct conn
*c
, char **vec
,
212 int attribute((unused
)) nvec
) {
214 struct queue_entry
*q
;
216 if(!trackdb_exists(vec
[0])) {
217 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
220 if(!(track
= trackdb_resolve(vec
[0]))) {
221 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
224 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
);
226 /* If we added the first track, and something is playing, then prepare the
227 * new track. If nothing is playing then we don't bother as it wouldn't gain
229 if(q
== qhead
.next
&& playing
)
231 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
232 /* If the queue was empty but we are for some reason paused then
234 if(!playing
) resume_playing(0);
236 return 1; /* completed */
239 static int c_remove(struct conn
*c
, char **vec
,
240 int attribute((unused
)) nvec
) {
241 struct queue_entry
*q
;
243 if(!(q
= queue_find(vec
[0]))) {
244 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
247 if(config
->restrictions
& RESTRICT_REMOVE
) {
248 /* can only remove tracks that you submitted */
249 if(!q
->submitter
|| strcmp(q
->submitter
, c
->who
)) {
250 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
254 queue_remove(q
, c
->who
);
255 /* De-prepare the track. */
257 /* If we removed the random track then add another one. */
258 if(q
->state
== playing_random
)
260 /* Prepare whatever the next head track is. */
261 if(qhead
.next
!= &qhead
)
262 prepare(c
->ev
, qhead
.next
);
264 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
265 return 1; /* completed */
268 static int c_scratch(struct conn
*c
,
272 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
273 return 1; /* completed */
275 if(config
->restrictions
& RESTRICT_SCRATCH
) {
276 /* can only scratch tracks you submitted and randomly selected ones */
277 if(playing
->submitter
&& strcmp(playing
->submitter
, c
->who
)) {
278 sink_writes(ev_writer_sink(c
->w
), "550 you didn't submit that track!\n");
282 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
283 /* If you scratch an unpaused track then it is automatically unpaused */
285 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
286 return 1; /* completed */
289 static int c_pause(struct conn
*c
,
290 char attribute((unused
)) **vec
,
291 int attribute((unused
)) nvec
) {
293 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
294 return 1; /* completed */
297 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
298 return 1; /* completed */
300 if(pause_playing(c
->who
) < 0)
301 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
303 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
307 static int c_resume(struct conn
*c
,
308 char attribute((unused
)) **vec
,
309 int attribute((unused
)) nvec
) {
311 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
312 return 1; /* completed */
314 resume_playing(c
->who
);
315 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
319 static int c_shutdown(struct conn
*c
,
320 char attribute((unused
)) **vec
,
321 int attribute((unused
)) nvec
) {
322 info("S%x shut down by %s", c
->tag
, c
->who
);
323 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
324 ev_writer_flush(c
->w
);
328 static int c_reconfigure(struct conn
*c
,
329 char attribute((unused
)) **vec
,
330 int attribute((unused
)) nvec
) {
331 info("S%x reconfigure by %s", c
->tag
, c
->who
);
332 if(reconfigure(c
->ev
, 1))
333 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
335 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
336 return 1; /* completed */
339 static int c_rescan(struct conn
*c
,
340 char attribute((unused
)) **vec
,
341 int attribute((unused
)) nvec
) {
342 info("S%x rescan by %s", c
->tag
, c
->who
);
343 trackdb_rescan(c
->ev
);
344 sink_writes(ev_writer_sink(c
->w
), "250 initiated rescan\n");
345 return 1; /* completed */
348 static int c_version(struct conn
*c
,
349 char attribute((unused
)) **vec
,
350 int attribute((unused
)) nvec
) {
351 /* VERSION had better only use the basic character set */
352 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
353 return 1; /* completed */
356 static int c_playing(struct conn
*c
,
357 char attribute((unused
)) **vec
,
358 int attribute((unused
)) nvec
) {
360 queue_fix_sofar(playing
);
361 playing
->expected
= 0;
362 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
364 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
365 return 1; /* completed */
368 static int c_become(struct conn
*c
,
370 int attribute((unused
)) nvec
) {
372 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
376 static const char *connection_host(struct conn
*c
) {
379 struct sockaddr_in in
;
380 struct sockaddr_in6 in6
;
386 /* get connection data */
388 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
389 error(errno
, "S%x error calling getpeername", c
->tag
);
392 if(c
->l
->pf
!= PF_UNIX
) {
393 if((n
= getnameinfo(&u
.sa
, l
,
394 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
395 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
398 return xstrdup(host
);
403 static int c_user(struct conn
*c
,
405 int attribute((unused
)) nvec
) {
407 const char *res
, *host
;
410 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
413 /* get connection data */
414 if(!(host
= connection_host(c
))) {
415 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
419 for(n
= 0; n
< config
->allow
.n
420 && strcmp(config
->allow
.s
[n
].s
[0], vec
[0]); ++n
)
422 /* if it's a real user check whether the response is right */
423 if(n
>= config
->allow
.n
) {
424 info("S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
425 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
428 res
= authhash(c
->nonce
, sizeof c
->nonce
, config
->allow
.s
[n
].s
[1],
429 config
->authorization_algorithm
);
430 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
432 /* currently we only bother logging remote connections */
433 if(strcmp(host
, "local"))
434 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
435 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
438 /* oops, response was wrong */
439 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
440 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
444 static int c_recent(struct conn
*c
,
445 char attribute((unused
)) **vec
,
446 int attribute((unused
)) nvec
) {
447 const struct queue_entry
*q
;
449 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
450 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
451 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
452 sink_writes(ev_writer_sink(c
->w
), ".\n");
453 return 1; /* completed */
456 static int c_queue(struct conn
*c
,
457 char attribute((unused
)) **vec
,
458 int attribute((unused
)) nvec
) {
459 struct queue_entry
*q
;
464 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
465 if(playing_is_enabled() && !paused
) {
467 queue_fix_sofar(playing
);
468 if((l
= trackdb_get(playing
->track
, "_length"))
469 && (length
= atol(l
))) {
471 when
+= length
- playing
->sofar
+ config
->gap
;
474 /* Nothing is playing but playing is enabled, so whatever is
475 * first in the queue can be expected to start immediately. */
478 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
479 /* fill in estimated start time */
481 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
482 /* update for next track */
484 if((l
= trackdb_get(q
->track
, "_length"))
485 && (length
= atol(l
)))
486 when
+= length
+ config
->gap
;
491 sink_writes(ev_writer_sink(c
->w
), ".\n");
492 return 1; /* completed */
495 static int output_list(struct conn
*c
, char **vec
) {
497 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
498 sink_writes(ev_writer_sink(c
->w
), ".\n");
502 static int files_dirs(struct conn
*c
,
505 enum trackdb_listable what
) {
506 const char *dir
, *re
, *errstr
;
512 case 0: dir
= 0; re
= 0; break;
513 case 1: dir
= vec
[0]; re
= 0; break;
514 case 2: dir
= vec
[0]; re
= vec
[1]; break;
517 /* A bit of a bodge to make sure the args don't trample on cache keys */
518 if(dir
&& strchr(dir
, '\n')) {
519 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
522 if(re
&& strchr(re
, '\n')) {
523 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
526 /* We bother eliminating "" because the web interface is relatively
527 * likely to send it */
529 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
530 fvec
= (char **)cache_get(&cache_files_type
, key
);
532 /* Got a cache hit, don't store the answer in the cache */
535 rec
= 0; /* quieten compiler */
537 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
539 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
540 &errstr
, &erroffset
, 0))) {
541 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
545 /* It only counts as a miss if the regexp was valid. */
546 ++cache_files_misses
;
549 /* No regexp, don't bother caching the result */
555 /* No cache hit (either because a miss, or because we did not look) so do
558 fvec
= trackdb_list(dir
, 0, what
, rec
);
560 fvec
= trackdb_list(0, 0, what
, rec
);
563 /* Put the answer in the cache */
564 cache_put(&cache_files_type
, key
, fvec
);
565 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
566 return output_list(c
, fvec
);
569 static int c_files(struct conn
*c
,
572 return files_dirs(c
, vec
, nvec
, trackdb_files
);
575 static int c_dirs(struct conn
*c
,
578 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
581 static int c_allfiles(struct conn
*c
,
584 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
587 static int c_get(struct conn
*c
,
589 int attribute((unused
)) nvec
) {
592 if(vec
[1][0] != '_' && (v
= trackdb_get(vec
[0], vec
[1])))
593 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
595 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
599 static int c_length(struct conn
*c
,
601 int attribute((unused
)) nvec
) {
602 const char *track
, *v
;
604 if(!(track
= trackdb_resolve(vec
[0]))) {
605 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
608 if((v
= trackdb_get(track
, "_length")))
609 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
611 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
615 static int c_set(struct conn
*c
,
617 int attribute((unused
)) nvec
) {
618 if(vec
[1][0] != '_' && !trackdb_set(vec
[0], vec
[1], vec
[2]))
619 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
621 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
625 static int c_prefs(struct conn
*c
,
627 int attribute((unused
)) nvec
) {
630 k
= trackdb_get_all(vec
[0]);
631 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
632 for(; k
; k
= k
->next
)
633 if(k
->name
[0] != '_') /* omit internal values */
634 sink_printf(ev_writer_sink(c
->w
),
635 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
636 sink_writes(ev_writer_sink(c
->w
), ".\n");
640 static int c_exists(struct conn
*c
,
642 int attribute((unused
)) nvec
) {
643 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
647 static void search_parse_error(const char *msg
, void *u
) {
648 *(const char **)u
= msg
;
651 static int c_search(struct conn
*c
,
653 int attribute((unused
)) nvec
) {
654 char **terms
, **results
;
655 int nterms
, nresults
, n
;
656 const char *e
= "unknown error";
658 /* This is a bit of a bodge. Initially it's there to make the eclient
659 * interface a bit more convenient to add searching to, but it has the more
660 * compelling advantage that if everything uses it, then interpretation of
661 * user-supplied search strings will be the same everywhere. */
662 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
663 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
665 results
= trackdb_search(terms
, nterms
, &nresults
);
666 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
667 for(n
= 0; n
< nresults
; ++n
)
668 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
669 sink_writes(ev_writer_sink(c
->w
), ".\n");
674 static int c_random_enable(struct conn
*c
,
675 char attribute((unused
)) **vec
,
676 int attribute((unused
)) nvec
) {
677 enable_random(c
->who
, c
->ev
);
678 /* Enable implicitly unpauses if there is nothing playing */
679 if(paused
&& !playing
) resume_playing(c
->who
);
680 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
681 return 1; /* completed */
684 static int c_random_disable(struct conn
*c
,
685 char attribute((unused
)) **vec
,
686 int attribute((unused
)) nvec
) {
687 disable_random(c
->who
);
688 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
689 return 1; /* completed */
692 static int c_random_enabled(struct conn
*c
,
693 char attribute((unused
)) **vec
,
694 int attribute((unused
)) nvec
) {
695 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
696 return 1; /* completed */
699 static void got_stats(char *stats
, void *u
) {
700 struct conn
*const c
= u
;
702 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
703 /* Now we can start processing commands again */
704 ev_reader_enable(c
->r
);
707 static int c_stats(struct conn
*c
,
708 char attribute((unused
)) **vec
,
709 int attribute((unused
)) nvec
) {
710 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
711 return 0; /* not yet complete */
714 static int c_volume(struct conn
*c
,
725 l
= r
= atoi(vec
[0]);
736 if(mixer_control(&l
, &r
, set
))
737 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
739 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
740 if(l
!= volume_left
|| r
!= volume_right
) {
743 snprintf(lb
, sizeof lb
, "%d", l
);
744 snprintf(rb
, sizeof rb
, "%d", r
);
745 eventlog("volume", lb
, rb
, (char *)0);
751 /** @brief Called when data arrives on a log connection
753 * We just discard all such data. The client may occasionally send data as a
756 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
758 void attribute((unused
)) *ptr
,
760 int attribute((unused
)) eof
,
761 void attribute((unused
)) *u
) {
764 ev_reader_consume(reader
, bytes
);
766 /* Oops, that's all for now */
767 D(("logging reader eof"));
770 ev_writer_close(c
->w
);
778 static void logclient(const char *msg
, void *user
) {
779 struct conn
*c
= user
;
782 /* This connection has gone up in smoke for some reason */
783 eventlog_remove(c
->lo
);
786 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
787 (uintmax_t)time(0), msg
);
790 static int c_log(struct conn
*c
,
791 char attribute((unused
)) **vec
,
792 int attribute((unused
)) nvec
) {
795 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
796 /* pump out initial state */
798 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
800 playing_is_enabled() ?
"enable_play" : "disable_play");
801 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
803 random_is_enabled() ?
"enable_random" : "disable_random");
804 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
806 paused ?
"pause" : "resume");
808 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
811 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
812 (uintmax_t)now
, volume_left
, volume_right
);
813 c
->lo
= xmalloc(sizeof *c
->lo
);
814 c
->lo
->fn
= logclient
;
817 c
->reader
= logging_reader_callback
;
821 static int c_move(struct conn
*c
,
823 int attribute((unused
)) nvec
) {
824 struct queue_entry
*q
;
827 if(config
->restrictions
& RESTRICT_MOVE
) {
829 sink_writes(ev_writer_sink(c
->w
),
830 "550 only trusted users can move tracks\n");
834 if(!(q
= queue_find(vec
[0]))) {
835 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
838 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
839 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
840 /* If we've moved to the head of the queue then prepare the track. */
846 static int c_moveafter(struct conn
*c
,
848 int attribute((unused
)) nvec
) {
849 struct queue_entry
*q
, **qs
;
852 if(config
->restrictions
& RESTRICT_MOVE
) {
854 sink_writes(ev_writer_sink(c
->w
),
855 "550 only trusted users can move tracks\n");
860 if(!(q
= queue_find(vec
[0]))) {
861 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
868 qs
= xcalloc(nvec
, sizeof *qs
);
869 for(n
= 0; n
< nvec
; ++n
)
870 if(!(qs
[n
] = queue_find(vec
[n
]))) {
871 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
874 queue_moveafter(q
, nvec
, qs
, c
->who
);
875 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
876 /* If we've moved to the head of the queue then prepare the track. */
882 static int c_part(struct conn
*c
,
884 int attribute((unused
)) nvec
) {
885 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
886 trackdb_getpart(vec
[0], vec
[1], vec
[2]));
890 static int c_resolve(struct conn
*c
,
892 int attribute((unused
)) nvec
) {
895 if(!(track
= trackdb_resolve(vec
[0]))) {
896 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
899 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", track
);
903 static int c_tags(struct conn
*c
,
904 char attribute((unused
)) **vec
,
905 int attribute((unused
)) nvec
) {
906 char **tags
= trackdb_alltags();
908 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
910 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
911 **tags
== '.' ?
"." : "", *tags
);
914 sink_writes(ev_writer_sink(c
->w
), ".\n");
915 return 1; /* completed */
919 static int c_set_global(struct conn
*c
,
921 int attribute((unused
)) nvec
) {
922 if(vec
[0][0] == '_') {
923 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
926 trackdb_set_global(vec
[0], vec
[1], c
->who
);
927 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
931 static int c_get_global(struct conn
*c
,
933 int attribute((unused
)) nvec
) {
934 const char *s
= trackdb_get_global(vec
[0]);
937 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", s
);
939 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
943 static int c_nop(struct conn
*c
,
944 char attribute((unused
)) **vec
,
945 int attribute((unused
)) nvec
) {
946 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
950 static int c_new(struct conn
*c
,
953 char **tracks
= trackdb_new(0, nvec
> 0 ?
atoi(vec
[0]) : INT_MAX
);
955 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
957 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
958 **tracks
== '.' ?
"." : "", *tracks
);
961 sink_writes(ev_writer_sink(c
->w
), ".\n");
962 return 1; /* completed */
966 static int c_rtp_address(struct conn
*c
,
967 char attribute((unused
)) **vec
,
968 int attribute((unused
)) nvec
) {
969 if(config
->speaker_backend
== BACKEND_NETWORK
) {
970 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
971 quoteutf8(config
->broadcast
.s
[0]),
972 quoteutf8(config
->broadcast
.s
[1]));
974 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
978 static int c_cookie(struct conn
*c
,
980 int attribute((unused
)) nvec
) {
984 /* Can't log in twice on the same connection */
986 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
989 /* Get some kind of peer identifcation */
990 if(!(host
= connection_host(c
))) {
991 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
994 /* Check the cookie */
995 user
= verify_cookie(vec
[0]);
997 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1003 if(strcmp(host
, "local"))
1004 info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1005 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
1009 static int c_make_cookie(struct conn
*c
,
1010 char attribute((unused
)) **vec
,
1011 int attribute((unused
)) nvec
) {
1012 const char *cookie
= make_cookie(c
->who
);
1015 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", cookie
);
1017 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1021 static int c_revoke(struct conn
*c
,
1022 char attribute((unused
)) **vec
,
1023 int attribute((unused
)) nvec
) {
1025 revoke_cookie(c
->cookie
);
1026 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1028 sink_writes(ev_writer_sink(c
->w
), "550 Did not log in with cookie\n");
1032 #define C_AUTH 0001 /* must be authenticated */
1033 #define C_TRUSTED 0002 /* must be trusted user */
1035 static const struct command
{
1037 int minargs
, maxargs
;
1038 int (*fn
)(struct conn
*, char **, int);
1041 { "allfiles", 0, 2, c_allfiles
, C_AUTH
},
1042 { "become", 1, 1, c_become
, C_AUTH
|C_TRUSTED
},
1043 { "cookie", 1, 1, c_cookie
, 0 },
1044 { "dirs", 0, 2, c_dirs
, C_AUTH
},
1045 { "disable", 0, 1, c_disable
, C_AUTH
},
1046 { "enable", 0, 0, c_enable
, C_AUTH
},
1047 { "enabled", 0, 0, c_enabled
, C_AUTH
},
1048 { "exists", 1, 1, c_exists
, C_AUTH
},
1049 { "files", 0, 2, c_files
, C_AUTH
},
1050 { "get", 2, 2, c_get
, C_AUTH
},
1051 { "get-global", 1, 1, c_get_global
, C_AUTH
},
1052 { "length", 1, 1, c_length
, C_AUTH
},
1053 { "log", 0, 0, c_log
, C_AUTH
},
1054 { "make-cookie", 0, 0, c_make_cookie
, C_AUTH
},
1055 { "move", 2, 2, c_move
, C_AUTH
},
1056 { "moveafter", 1, INT_MAX
, c_moveafter
, C_AUTH
},
1057 { "new", 0, 1, c_new
, C_AUTH
},
1058 { "nop", 0, 0, c_nop
, C_AUTH
},
1059 { "part", 3, 3, c_part
, C_AUTH
},
1060 { "pause", 0, 0, c_pause
, C_AUTH
},
1061 { "play", 1, 1, c_play
, C_AUTH
},
1062 { "playing", 0, 0, c_playing
, C_AUTH
},
1063 { "prefs", 1, 1, c_prefs
, C_AUTH
},
1064 { "queue", 0, 0, c_queue
, C_AUTH
},
1065 { "random-disable", 0, 0, c_random_disable
, C_AUTH
},
1066 { "random-enable", 0, 0, c_random_enable
, C_AUTH
},
1067 { "random-enabled", 0, 0, c_random_enabled
, C_AUTH
},
1068 { "recent", 0, 0, c_recent
, C_AUTH
},
1069 { "reconfigure", 0, 0, c_reconfigure
, C_AUTH
|C_TRUSTED
},
1070 { "remove", 1, 1, c_remove
, C_AUTH
},
1071 { "rescan", 0, 0, c_rescan
, C_AUTH
|C_TRUSTED
},
1072 { "resolve", 1, 1, c_resolve
, C_AUTH
},
1073 { "resume", 0, 0, c_resume
, C_AUTH
},
1074 { "revoke", 0, 0, c_revoke
, C_AUTH
},
1075 { "rtp-address", 0, 0, c_rtp_address
, C_AUTH
},
1076 { "scratch", 0, 1, c_scratch
, C_AUTH
},
1077 { "search", 1, 1, c_search
, C_AUTH
},
1078 { "set", 3, 3, c_set
, C_AUTH
, },
1079 { "set-global", 2, 2, c_set_global
, C_AUTH
},
1080 { "shutdown", 0, 0, c_shutdown
, C_AUTH
|C_TRUSTED
},
1081 { "stats", 0, 0, c_stats
, C_AUTH
},
1082 { "tags", 0, 0, c_tags
, C_AUTH
},
1083 { "unset", 2, 2, c_set
, C_AUTH
},
1084 { "unset-global", 1, 1, c_set_global
, C_AUTH
},
1085 { "user", 2, 2, c_user
, 0 },
1086 { "version", 0, 0, c_version
, C_AUTH
},
1087 { "volume", 0, 2, c_volume
, C_AUTH
}
1090 static void command_error(const char *msg
, void *u
) {
1093 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1096 /* process a command. Return 1 if complete, 0 if incomplete. */
1097 static int command(struct conn
*c
, char *line
) {
1101 D(("server command %s", line
));
1102 /* We force everything into NFC as early as possible */
1103 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1104 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
1107 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1108 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1112 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1115 if((n
= TABLE_FIND(commands
, struct command
, name
, vec
[0])) < 0)
1116 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1118 if((commands
[n
].flags
& C_AUTH
) && !c
->who
) {
1119 sink_writes(ev_writer_sink(c
->w
), "530 not authenticated\n");
1122 if((commands
[n
].flags
& C_TRUSTED
) && !trusted(c
)) {
1123 sink_writes(ev_writer_sink(c
->w
), "530 insufficient privilege\n");
1128 if(nvec
< commands
[n
].minargs
) {
1129 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1132 if(nvec
> commands
[n
].maxargs
) {
1133 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1136 return commands
[n
].fn(c
, vec
, nvec
);
1138 return 1; /* completed */
1141 /* redirect to the right reader callback for our current state */
1142 static int redirect_reader_callback(ev_source
*ev
,
1150 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
1153 /* the main command reader */
1154 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1164 D(("server reader_callback"));
1165 while((eol
= memchr(ptr
, '\n', bytes
))) {
1167 ev_reader_consume(reader
, eol
- (char *)ptr
);
1168 complete
= command(c
, ptr
);
1169 bytes
-= (eol
- (char *)ptr
);
1172 /* the command had better have set a new reader callback */
1174 /* there are further bytes to read, or we are at eof; arrange for the
1175 * command's reader callback to handle them */
1176 return ev_reader_incomplete(reader
);
1177 /* nothing's going on right now */
1180 /* command completed, we can go around and handle the next one */
1184 error(0, "S%x unterminated line", c
->tag
);
1185 D(("normal reader close"));
1188 D(("close associated writer"));
1189 ev_writer_close(c
->w
);
1196 static int listen_callback(ev_source
*ev
,
1198 const struct sockaddr
attribute((unused
)) *remote
,
1199 socklen_t
attribute((unused
)) rlen
,
1201 const struct listener
*l
= u
;
1202 struct conn
*c
= xmalloc(sizeof *c
);
1203 static unsigned tags
;
1205 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1210 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
1212 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
1216 c
->reader
= reader_callback
;
1218 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1219 if(!strcmp(config
->authorization_algorithm
, "sha1")
1220 || !strcmp(config
->authorization_algorithm
, "SHA1")) {
1221 sink_printf(ev_writer_sink(c
->w
), "231 %s\n",
1222 hex(c
->nonce
, sizeof c
->nonce
));
1224 sink_printf(ev_writer_sink(c
->w
), "231 %s %s\n",
1225 config
->authorization_algorithm
,
1226 hex(c
->nonce
, sizeof c
->nonce
));
1231 int server_start(ev_source
*ev
, int pf
,
1232 size_t socklen
, const struct sockaddr
*sa
,
1235 struct listener
*l
= xmalloc(sizeof *l
);
1236 static const int one
= 1;
1238 D(("server_init socket %s", name
));
1239 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1240 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1241 if(bind(fd
, sa
, socklen
) < 0) {
1242 error(errno
, "error binding to %s", name
);
1250 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
1255 int server_stop(ev_source
*ev
, int fd
) {
1257 return ev_listen_cancel(ev
, fd
);