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"
63 #include "trackname.h"
71 # define NONCE_SIZE 16
74 int volume_left
, volume_right
; /* last known volume */
76 /** @brief Accept all well-formed login attempts
87 /** @brief One client connection */
89 /** @brief Read commands from here */
91 /** @brief Send responses to here */
93 /** @brief Underlying file descriptor */
95 /** @brief Unique identifier for connection used in log messages */
97 /** @brief Login name or NULL */
99 /** @brief Event loop */
101 /** @brief Nonce chosen for this connection */
102 unsigned char nonce
[NONCE_SIZE
];
103 /** @brief Current reader callback
105 * We change this depending on whether we're servicing the @b log command
107 ev_reader_callback
*reader
;
108 /** @brief Event log output sending to this connection */
109 struct eventlog_output
*lo
;
110 /** @brief Parent listener */
111 const struct listener
*l
;
112 /** @brief Login cookie or NULL */
114 /** @brief Connection rights */
118 static int reader_callback(ev_source
*ev
,
125 static const char *noyes
[] = { "no", "yes" };
127 /** @brief Called when a connection's writer fails or is shut down
129 * If the connection still has a raeder that is cancelled.
131 static int writer_error(ev_source
attribute((unused
)) *ev
,
136 D(("server writer_error S%x %d", c
->tag
, errno_value
));
137 if(errno_value
== 0) {
139 D(("S%x writer completed", c
->tag
));
141 if(errno_value
!= EPIPE
)
142 error(errno_value
, "S%x write error on socket", c
->tag
);
144 D(("cancel reader"));
145 ev_reader_cancel(c
->r
);
148 D(("done cancel reader"));
155 /** @brief Called when a conncetion's reader fails or is shut down
157 * If connection still has a writer then it is closed.
159 static int reader_error(ev_source
attribute((unused
)) *ev
,
164 D(("server reader_error S%x %d", c
->tag
, errno_value
));
165 error(errno_value
, "S%x read error on socket", c
->tag
);
167 ev_writer_close(c
->w
);
174 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
176 disable_playing(c
->who
);
177 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
178 disable_playing(c
->who
);
180 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
181 return 1; /* completed */
183 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
184 return 1; /* completed */
187 static int c_enable(struct conn
*c
,
188 char attribute((unused
)) **vec
,
189 int attribute((unused
)) nvec
) {
190 enable_playing(c
->who
, c
->ev
);
191 /* Enable implicitly unpauses if there is nothing playing */
192 if(paused
&& !playing
) resume_playing(c
->who
);
193 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
194 return 1; /* completed */
197 static int c_enabled(struct conn
*c
,
198 char attribute((unused
)) **vec
,
199 int attribute((unused
)) nvec
) {
200 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
201 return 1; /* completed */
204 static int c_play(struct conn
*c
, char **vec
,
205 int attribute((unused
)) nvec
) {
207 struct queue_entry
*q
;
209 if(!trackdb_exists(vec
[0])) {
210 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
213 if(!(track
= trackdb_resolve(vec
[0]))) {
214 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
217 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
);
219 /* If we added the first track, and something is playing, then prepare the
220 * new track. If nothing is playing then we don't bother as it wouldn't gain
222 if(q
== qhead
.next
&& playing
)
224 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
225 /* If the queue was empty but we are for some reason paused then
227 if(!playing
) resume_playing(0);
229 return 1; /* completed */
232 static int c_remove(struct conn
*c
, char **vec
,
233 int attribute((unused
)) nvec
) {
234 struct queue_entry
*q
;
237 if(!(q
= queue_find(vec
[0]))) {
238 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
242 if(!strcmp(q
->submitter
, c
->who
))
243 r
= RIGHT_REMOVE_MINE
;
245 r
= RIGHT_REMOVE_ANY
;
247 r
= RIGHT_REMOVE_RANDOM
;
248 if(!(c
->rights
& r
)) {
249 sink_writes(ev_writer_sink(c
->w
),
250 "550 Not authorized to remove that track\n");
253 queue_remove(q
, c
->who
);
254 /* De-prepare the track. */
256 /* If we removed a random track then add another one. */
257 if(q
->state
== playing_random
)
259 /* Prepare whatever the next head track is. */
260 if(qhead
.next
!= &qhead
)
261 prepare(c
->ev
, qhead
.next
);
263 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
264 return 1; /* completed */
267 static int c_scratch(struct conn
*c
,
273 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
274 return 1; /* completed */
276 /* TODO there is a bug here: if we specify an ID but it's not the currently
277 * playing track then you will get 550 if you weren't authorized to scratch
278 * the currently playing track. */
279 if(playing
->submitter
)
280 if(!strcmp(playing
->submitter
, c
->who
))
281 r
= RIGHT_SCRATCH_MINE
;
283 r
= RIGHT_SCRATCH_ANY
;
285 r
= RIGHT_SCRATCH_RANDOM
;
286 if(!(c
->rights
& r
)) {
287 sink_writes(ev_writer_sink(c
->w
),
288 "550 Not authorized to scratch that track\n");
291 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
292 /* If you scratch an unpaused track then it is automatically unpaused */
294 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
295 return 1; /* completed */
298 static int c_pause(struct conn
*c
,
299 char attribute((unused
)) **vec
,
300 int attribute((unused
)) nvec
) {
302 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
303 return 1; /* completed */
306 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
307 return 1; /* completed */
309 if(pause_playing(c
->who
) < 0)
310 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
312 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
316 static int c_resume(struct conn
*c
,
317 char attribute((unused
)) **vec
,
318 int attribute((unused
)) nvec
) {
320 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
321 return 1; /* completed */
323 resume_playing(c
->who
);
324 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
328 static int c_shutdown(struct conn
*c
,
329 char attribute((unused
)) **vec
,
330 int attribute((unused
)) nvec
) {
331 info("S%x shut down by %s", c
->tag
, c
->who
);
332 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
333 ev_writer_flush(c
->w
);
337 static int c_reconfigure(struct conn
*c
,
338 char attribute((unused
)) **vec
,
339 int attribute((unused
)) nvec
) {
340 info("S%x reconfigure by %s", c
->tag
, c
->who
);
341 if(reconfigure(c
->ev
, 1))
342 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
344 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
345 return 1; /* completed */
348 static int c_rescan(struct conn
*c
,
349 char attribute((unused
)) **vec
,
350 int attribute((unused
)) nvec
) {
351 info("S%x rescan by %s", c
->tag
, c
->who
);
352 trackdb_rescan(c
->ev
);
353 sink_writes(ev_writer_sink(c
->w
), "250 initiated rescan\n");
354 return 1; /* completed */
357 static int c_version(struct conn
*c
,
358 char attribute((unused
)) **vec
,
359 int attribute((unused
)) nvec
) {
360 /* VERSION had better only use the basic character set */
361 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
362 return 1; /* completed */
365 static int c_playing(struct conn
*c
,
366 char attribute((unused
)) **vec
,
367 int attribute((unused
)) nvec
) {
369 queue_fix_sofar(playing
);
370 playing
->expected
= 0;
371 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
373 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
374 return 1; /* completed */
377 static const char *connection_host(struct conn
*c
) {
380 struct sockaddr_in in
;
381 struct sockaddr_in6 in6
;
387 /* get connection data */
389 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
390 error(errno
, "S%x error calling getpeername", c
->tag
);
393 if(c
->l
->pf
!= PF_UNIX
) {
394 if((n
= getnameinfo(&u
.sa
, l
,
395 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
396 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
399 return xstrdup(host
);
404 static int c_user(struct conn
*c
,
406 int attribute((unused
)) nvec
) {
408 const char *res
, *host
, *password
;
412 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
415 /* get connection data */
416 if(!(host
= connection_host(c
))) {
417 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
421 k
= trackdb_getuserinfo(vec
[0]);
422 /* reject nonexistent users */
424 error(0, "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 /* reject unconfirmed users */
429 if(kvp_get(k
, "confirmation")) {
430 error(0, "S%x unconfirmed user '%s' from %s", c
->tag
, vec
[0], host
);
431 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
434 password
= kvp_get(k
, "password");
435 if(!password
) password
= "";
436 if(parse_rights(kvp_get(k
, "rights"), &rights
)) {
437 error(0, "error parsing rights for %s", vec
[0]);
438 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
441 /* check whether the response is right */
442 res
= authhash(c
->nonce
, sizeof c
->nonce
, password
,
443 config
->authorization_algorithm
);
444 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
447 /* currently we only bother logging remote connections */
448 if(strcmp(host
, "local")) {
449 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
450 c
->rights
|= RIGHT__LOCAL
;
452 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
455 /* oops, response was wrong */
456 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
457 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
461 static int c_recent(struct conn
*c
,
462 char attribute((unused
)) **vec
,
463 int attribute((unused
)) nvec
) {
464 const struct queue_entry
*q
;
466 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
467 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
468 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
469 sink_writes(ev_writer_sink(c
->w
), ".\n");
470 return 1; /* completed */
473 static int c_queue(struct conn
*c
,
474 char attribute((unused
)) **vec
,
475 int attribute((unused
)) nvec
) {
476 struct queue_entry
*q
;
481 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
482 if(playing_is_enabled() && !paused
) {
484 queue_fix_sofar(playing
);
485 if((l
= trackdb_get(playing
->track
, "_length"))
486 && (length
= atol(l
))) {
488 when
+= length
- playing
->sofar
+ config
->gap
;
491 /* Nothing is playing but playing is enabled, so whatever is
492 * first in the queue can be expected to start immediately. */
495 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
496 /* fill in estimated start time */
498 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
499 /* update for next track */
501 if((l
= trackdb_get(q
->track
, "_length"))
502 && (length
= atol(l
)))
503 when
+= length
+ config
->gap
;
508 sink_writes(ev_writer_sink(c
->w
), ".\n");
509 return 1; /* completed */
512 static int output_list(struct conn
*c
, char **vec
) {
514 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
515 sink_writes(ev_writer_sink(c
->w
), ".\n");
519 static int files_dirs(struct conn
*c
,
522 enum trackdb_listable what
) {
523 const char *dir
, *re
, *errstr
;
529 case 0: dir
= 0; re
= 0; break;
530 case 1: dir
= vec
[0]; re
= 0; break;
531 case 2: dir
= vec
[0]; re
= vec
[1]; break;
534 /* A bit of a bodge to make sure the args don't trample on cache keys */
535 if(dir
&& strchr(dir
, '\n')) {
536 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
539 if(re
&& strchr(re
, '\n')) {
540 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
543 /* We bother eliminating "" because the web interface is relatively
544 * likely to send it */
546 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
547 fvec
= (char **)cache_get(&cache_files_type
, key
);
549 /* Got a cache hit, don't store the answer in the cache */
552 rec
= 0; /* quieten compiler */
554 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
556 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
557 &errstr
, &erroffset
, 0))) {
558 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
562 /* It only counts as a miss if the regexp was valid. */
563 ++cache_files_misses
;
566 /* No regexp, don't bother caching the result */
572 /* No cache hit (either because a miss, or because we did not look) so do
575 fvec
= trackdb_list(dir
, 0, what
, rec
);
577 fvec
= trackdb_list(0, 0, what
, rec
);
580 /* Put the answer in the cache */
581 cache_put(&cache_files_type
, key
, fvec
);
582 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
583 return output_list(c
, fvec
);
586 static int c_files(struct conn
*c
,
589 return files_dirs(c
, vec
, nvec
, trackdb_files
);
592 static int c_dirs(struct conn
*c
,
595 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
598 static int c_allfiles(struct conn
*c
,
601 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
604 static int c_get(struct conn
*c
,
606 int attribute((unused
)) nvec
) {
609 if(vec
[1][0] != '_' && (v
= trackdb_get(vec
[0], vec
[1])))
610 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
612 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
616 static int c_length(struct conn
*c
,
618 int attribute((unused
)) nvec
) {
619 const char *track
, *v
;
621 if(!(track
= trackdb_resolve(vec
[0]))) {
622 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
625 if((v
= trackdb_get(track
, "_length")))
626 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", v
);
628 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
632 static int c_set(struct conn
*c
,
634 int attribute((unused
)) nvec
) {
635 if(vec
[1][0] != '_' && !trackdb_set(vec
[0], vec
[1], vec
[2]))
636 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
638 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
642 static int c_prefs(struct conn
*c
,
644 int attribute((unused
)) nvec
) {
647 k
= trackdb_get_all(vec
[0]);
648 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
649 for(; k
; k
= k
->next
)
650 if(k
->name
[0] != '_') /* omit internal values */
651 sink_printf(ev_writer_sink(c
->w
),
652 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
653 sink_writes(ev_writer_sink(c
->w
), ".\n");
657 static int c_exists(struct conn
*c
,
659 int attribute((unused
)) nvec
) {
660 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
664 static void search_parse_error(const char *msg
, void *u
) {
665 *(const char **)u
= msg
;
668 static int c_search(struct conn
*c
,
670 int attribute((unused
)) nvec
) {
671 char **terms
, **results
;
672 int nterms
, nresults
, n
;
673 const char *e
= "unknown error";
675 /* This is a bit of a bodge. Initially it's there to make the eclient
676 * interface a bit more convenient to add searching to, but it has the more
677 * compelling advantage that if everything uses it, then interpretation of
678 * user-supplied search strings will be the same everywhere. */
679 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
680 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
682 results
= trackdb_search(terms
, nterms
, &nresults
);
683 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
684 for(n
= 0; n
< nresults
; ++n
)
685 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
686 sink_writes(ev_writer_sink(c
->w
), ".\n");
691 static int c_random_enable(struct conn
*c
,
692 char attribute((unused
)) **vec
,
693 int attribute((unused
)) nvec
) {
694 enable_random(c
->who
, c
->ev
);
695 /* Enable implicitly unpauses if there is nothing playing */
696 if(paused
&& !playing
) resume_playing(c
->who
);
697 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
698 return 1; /* completed */
701 static int c_random_disable(struct conn
*c
,
702 char attribute((unused
)) **vec
,
703 int attribute((unused
)) nvec
) {
704 disable_random(c
->who
);
705 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
706 return 1; /* completed */
709 static int c_random_enabled(struct conn
*c
,
710 char attribute((unused
)) **vec
,
711 int attribute((unused
)) nvec
) {
712 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
713 return 1; /* completed */
716 static void got_stats(char *stats
, void *u
) {
717 struct conn
*const c
= u
;
719 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
720 /* Now we can start processing commands again */
721 ev_reader_enable(c
->r
);
724 static int c_stats(struct conn
*c
,
725 char attribute((unused
)) **vec
,
726 int attribute((unused
)) nvec
) {
727 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
728 return 0; /* not yet complete */
731 static int c_volume(struct conn
*c
,
743 l
= r
= atoi(vec
[0]);
754 rights
= set ? RIGHT_VOLUME
: RIGHT_READ
;
755 if(!(c
->rights
& rights
)) {
756 sink_writes(ev_writer_sink(c
->w
), "530 Prohibited\n");
759 if(mixer_control(&l
, &r
, set
))
760 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
762 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
763 if(l
!= volume_left
|| r
!= volume_right
) {
766 snprintf(lb
, sizeof lb
, "%d", l
);
767 snprintf(rb
, sizeof rb
, "%d", r
);
768 eventlog("volume", lb
, rb
, (char *)0);
774 /** @brief Called when data arrives on a log connection
776 * We just discard all such data. The client may occasionally send data as a
779 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
781 void attribute((unused
)) *ptr
,
783 int attribute((unused
)) eof
,
784 void attribute((unused
)) *u
) {
787 ev_reader_consume(reader
, bytes
);
789 /* Oops, that's all for now */
790 D(("logging reader eof"));
793 ev_writer_close(c
->w
);
801 static void logclient(const char *msg
, void *user
) {
802 struct conn
*c
= user
;
805 /* This connection has gone up in smoke for some reason */
806 eventlog_remove(c
->lo
);
809 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
810 (uintmax_t)time(0), msg
);
813 static int c_log(struct conn
*c
,
814 char attribute((unused
)) **vec
,
815 int attribute((unused
)) nvec
) {
818 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
819 /* pump out initial state */
821 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
823 playing_is_enabled() ?
"enable_play" : "disable_play");
824 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
826 random_is_enabled() ?
"enable_random" : "disable_random");
827 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
829 paused ?
"pause" : "resume");
831 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
834 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
835 (uintmax_t)now
, volume_left
, volume_right
);
836 c
->lo
= xmalloc(sizeof *c
->lo
);
837 c
->lo
->fn
= logclient
;
840 c
->reader
= logging_reader_callback
;
844 /** @brief Test whether a move is allowed
845 * @param c Connection
846 * @param qs List of IDs on queue
847 * @param nqs Number of IDs
848 * @return 0 if move is prohibited, non-0 if it is allowed
850 static int has_move_rights(struct conn
*c
, struct queue_entry
**qs
, int nqs
) {
853 for(; nqs
> 0; ++qs
, --nqs
) {
854 struct queue_entry
*const q
= *qs
;
857 if(!strcmp(q
->submitter
, c
->who
))
858 r
|= RIGHT_MOVE_MINE
;
862 r
|= RIGHT_MOVE_RANDOM
;
864 return (c
->rights
& r
) == r
;
867 static int c_move(struct conn
*c
,
869 int attribute((unused
)) nvec
) {
870 struct queue_entry
*q
;
873 if(!(q
= queue_find(vec
[0]))) {
874 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
877 if(!has_move_rights(c
, &q
, 1)) {
878 sink_writes(ev_writer_sink(c
->w
),
879 "550 Not authorized to move that track\n");
882 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
883 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
884 /* If we've moved to the head of the queue then prepare the track. */
890 static int c_moveafter(struct conn
*c
,
892 int attribute((unused
)) nvec
) {
893 struct queue_entry
*q
, **qs
;
897 if(!(q
= queue_find(vec
[0]))) {
898 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
905 qs
= xcalloc(nvec
, sizeof *qs
);
906 for(n
= 0; n
< nvec
; ++n
)
907 if(!(qs
[n
] = queue_find(vec
[n
]))) {
908 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
911 if(!has_move_rights(c
, qs
, nvec
)) {
912 sink_writes(ev_writer_sink(c
->w
),
913 "550 Not authorized to move those tracks\n");
916 queue_moveafter(q
, nvec
, qs
, c
->who
);
917 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
918 /* If we've moved to the head of the queue then prepare the track. */
924 static int c_part(struct conn
*c
,
926 int attribute((unused
)) nvec
) {
927 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
928 trackdb_getpart(vec
[0], vec
[1], vec
[2]));
932 static int c_resolve(struct conn
*c
,
934 int attribute((unused
)) nvec
) {
937 if(!(track
= trackdb_resolve(vec
[0]))) {
938 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
941 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", track
);
945 static int c_tags(struct conn
*c
,
946 char attribute((unused
)) **vec
,
947 int attribute((unused
)) nvec
) {
948 char **tags
= trackdb_alltags();
950 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
952 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
953 **tags
== '.' ?
"." : "", *tags
);
956 sink_writes(ev_writer_sink(c
->w
), ".\n");
957 return 1; /* completed */
960 static int c_set_global(struct conn
*c
,
962 int attribute((unused
)) nvec
) {
963 if(vec
[0][0] == '_') {
964 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
967 trackdb_set_global(vec
[0], vec
[1], c
->who
);
968 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
972 static int c_get_global(struct conn
*c
,
974 int attribute((unused
)) nvec
) {
975 const char *s
= trackdb_get_global(vec
[0]);
978 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", s
);
980 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
984 static int c_nop(struct conn
*c
,
985 char attribute((unused
)) **vec
,
986 int attribute((unused
)) nvec
) {
987 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
991 static int c_new(struct conn
*c
,
994 char **tracks
= trackdb_new(0, nvec
> 0 ?
atoi(vec
[0]) : INT_MAX
);
996 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
998 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
999 **tracks
== '.' ?
"." : "", *tracks
);
1002 sink_writes(ev_writer_sink(c
->w
), ".\n");
1003 return 1; /* completed */
1007 static int c_rtp_address(struct conn
*c
,
1008 char attribute((unused
)) **vec
,
1009 int attribute((unused
)) nvec
) {
1010 if(config
->speaker_backend
== BACKEND_NETWORK
) {
1011 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
1012 quoteutf8(config
->broadcast
.s
[0]),
1013 quoteutf8(config
->broadcast
.s
[1]));
1015 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
1019 static int c_cookie(struct conn
*c
,
1021 int attribute((unused
)) nvec
) {
1026 /* Can't log in twice on the same connection */
1028 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
1031 /* Get some kind of peer identifcation */
1032 if(!(host
= connection_host(c
))) {
1033 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1036 /* Check the cookie */
1037 user
= verify_cookie(vec
[0], &rights
);
1039 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1046 if(strcmp(host
, "local")) {
1047 info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1048 c
->rights
|= RIGHT__LOCAL
;
1050 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
1054 static int c_make_cookie(struct conn
*c
,
1055 char attribute((unused
)) **vec
,
1056 int attribute((unused
)) nvec
) {
1057 const char *cookie
= make_cookie(c
->who
);
1060 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cookie
));
1062 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1066 static int c_revoke(struct conn
*c
,
1067 char attribute((unused
)) **vec
,
1068 int attribute((unused
)) nvec
) {
1070 revoke_cookie(c
->cookie
);
1071 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1073 sink_writes(ev_writer_sink(c
->w
), "550 Did not log in with cookie\n");
1077 static int c_adduser(struct conn
*c
,
1079 int attribute((unused
)) nvec
) {
1080 if(trackdb_adduser(vec
[0], vec
[1], default_rights(), 0))
1081 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1083 sink_writes(ev_writer_sink(c
->w
), "250 User created\n");
1087 static int c_deluser(struct conn
*c
,
1089 int attribute((unused
)) nvec
) {
1090 if(trackdb_deluser(vec
[0]))
1091 sink_writes(ev_writer_sink(c
->w
), "550 Cannot deleted user\n");
1093 sink_writes(ev_writer_sink(c
->w
), "250 User deleted\n");
1097 static int c_edituser(struct conn
*c
,
1099 int attribute((unused
)) nvec
) {
1100 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1101 * address and password. */
1102 if((c
->rights
& RIGHT_ADMIN
)
1103 || (!strcmp(c
->who
, vec
[0])
1104 && (!strcmp(vec
[1], "email")
1105 || !strcmp(vec
[1], "password")))) {
1106 if(trackdb_edituserinfo(vec
[0], vec
[1], vec
[2]))
1107 sink_writes(ev_writer_sink(c
->w
), "550 Failed to change setting\n");
1109 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1111 sink_writes(ev_writer_sink(c
->w
), "550 Restricted to administrators\n");
1115 static int c_userinfo(struct conn
*c
,
1116 char attribute((unused
)) **vec
,
1117 int attribute((unused
)) nvec
) {
1121 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
1122 * address and righst list. */
1123 if((c
->rights
& RIGHT_ADMIN
)
1124 || (!strcmp(c
->who
, vec
[0])
1125 && (!strcmp(vec
[1], "email")
1126 || !strcmp(vec
[1], "rights")))) {
1127 if((k
= trackdb_getuserinfo(vec
[0])))
1128 if((value
= kvp_get(k
, vec
[1])))
1129 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(value
));
1131 sink_writes(ev_writer_sink(c
->w
), "555 Not set\n");
1133 sink_writes(ev_writer_sink(c
->w
), "550 No such user\n");
1135 sink_writes(ev_writer_sink(c
->w
), "550 Restricted to administrators\n");
1139 static int c_users(struct conn
*c
,
1140 char attribute((unused
)) **vec
,
1141 int attribute((unused
)) nvec
) {
1142 /* TODO de-dupe with c_tags */
1143 char **users
= trackdb_listusers();
1145 sink_writes(ev_writer_sink(c
->w
), "253 User list follows\n");
1147 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1148 **users
== '.' ?
"." : "", *users
);
1151 sink_writes(ev_writer_sink(c
->w
), ".\n");
1152 return 1; /* completed */
1155 static const struct command
{
1156 /** @brief Command name */
1159 /** @brief Minimum number of arguments */
1162 /** @brief Maximum number of arguments */
1165 /** @brief Function to process command */
1166 int (*fn
)(struct conn
*, char **, int);
1168 /** @brief Rights required to execute command
1170 * 0 means that the command can be issued without logging in. If multiple
1171 * bits are listed here any of those rights will do.
1175 { "adduser", 2, 2, c_adduser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1176 { "allfiles", 0, 2, c_allfiles
, RIGHT_READ
},
1177 { "cookie", 1, 1, c_cookie
, 0 },
1178 { "deluser", 1, 1, c_deluser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1179 { "dirs", 0, 2, c_dirs
, RIGHT_READ
},
1180 { "disable", 0, 1, c_disable
, RIGHT_GLOBAL_PREFS
},
1181 { "edituser", 3, 3, c_edituser
, RIGHT_ADMIN
|RIGHT_USERINFO
},
1182 { "enable", 0, 0, c_enable
, RIGHT_GLOBAL_PREFS
},
1183 { "enabled", 0, 0, c_enabled
, RIGHT_READ
},
1184 { "exists", 1, 1, c_exists
, RIGHT_READ
},
1185 { "files", 0, 2, c_files
, RIGHT_READ
},
1186 { "get", 2, 2, c_get
, RIGHT_READ
},
1187 { "get-global", 1, 1, c_get_global
, RIGHT_READ
},
1188 { "length", 1, 1, c_length
, RIGHT_READ
},
1189 { "log", 0, 0, c_log
, RIGHT_READ
},
1190 { "make-cookie", 0, 0, c_make_cookie
, RIGHT_READ
},
1191 { "move", 2, 2, c_move
, RIGHT_MOVE__MASK
},
1192 { "moveafter", 1, INT_MAX
, c_moveafter
, RIGHT_MOVE__MASK
},
1193 { "new", 0, 1, c_new
, RIGHT_READ
},
1194 { "nop", 0, 0, c_nop
, 0 },
1195 { "part", 3, 3, c_part
, RIGHT_READ
},
1196 { "pause", 0, 0, c_pause
, RIGHT_PAUSE
},
1197 { "play", 1, 1, c_play
, RIGHT_PLAY
},
1198 { "playing", 0, 0, c_playing
, RIGHT_READ
},
1199 { "prefs", 1, 1, c_prefs
, RIGHT_READ
},
1200 { "queue", 0, 0, c_queue
, RIGHT_READ
},
1201 { "random-disable", 0, 0, c_random_disable
, RIGHT_GLOBAL_PREFS
},
1202 { "random-enable", 0, 0, c_random_enable
, RIGHT_GLOBAL_PREFS
},
1203 { "random-enabled", 0, 0, c_random_enabled
, RIGHT_READ
},
1204 { "recent", 0, 0, c_recent
, RIGHT_READ
},
1205 { "reconfigure", 0, 0, c_reconfigure
, RIGHT_ADMIN
},
1206 { "remove", 1, 1, c_remove
, RIGHT_REMOVE__MASK
},
1207 { "rescan", 0, 0, c_rescan
, RIGHT_RESCAN
},
1208 { "resolve", 1, 1, c_resolve
, RIGHT_READ
},
1209 { "resume", 0, 0, c_resume
, RIGHT_PAUSE
},
1210 { "revoke", 0, 0, c_revoke
, RIGHT_READ
},
1211 { "rtp-address", 0, 0, c_rtp_address
, 0 },
1212 { "scratch", 0, 1, c_scratch
, RIGHT_SCRATCH__MASK
},
1213 { "search", 1, 1, c_search
, RIGHT_READ
},
1214 { "set", 3, 3, c_set
, RIGHT_PREFS
, },
1215 { "set-global", 2, 2, c_set_global
, RIGHT_GLOBAL_PREFS
},
1216 { "shutdown", 0, 0, c_shutdown
, RIGHT_ADMIN
},
1217 { "stats", 0, 0, c_stats
, RIGHT_READ
},
1218 { "tags", 0, 0, c_tags
, RIGHT_READ
},
1219 { "unset", 2, 2, c_set
, RIGHT_PREFS
},
1220 { "unset-global", 1, 1, c_set_global
, RIGHT_GLOBAL_PREFS
},
1221 { "user", 2, 2, c_user
, 0 },
1222 { "userinfo", 2, 2, c_userinfo
, RIGHT_READ
},
1223 { "users", 0, 0, c_users
, RIGHT_READ
},
1224 { "version", 0, 0, c_version
, RIGHT_READ
},
1225 { "volume", 0, 2, c_volume
, RIGHT_READ
|RIGHT_VOLUME
}
1228 static void command_error(const char *msg
, void *u
) {
1231 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1234 /* process a command. Return 1 if complete, 0 if incomplete. */
1235 static int command(struct conn
*c
, char *line
) {
1239 D(("server command %s", line
));
1240 /* We force everything into NFC as early as possible */
1241 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1242 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
1245 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1246 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1250 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1253 if((n
= TABLE_FIND(commands
, struct command
, name
, vec
[0])) < 0)
1254 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1256 if(commands
[n
].rights
1257 && !(c
->rights
& commands
[n
].rights
)) {
1258 sink_writes(ev_writer_sink(c
->w
), "530 Prohibited\n");
1263 if(nvec
< commands
[n
].minargs
) {
1264 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1267 if(nvec
> commands
[n
].maxargs
) {
1268 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1271 return commands
[n
].fn(c
, vec
, nvec
);
1273 return 1; /* completed */
1276 /* redirect to the right reader callback for our current state */
1277 static int redirect_reader_callback(ev_source
*ev
,
1285 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
1288 /* the main command reader */
1289 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1299 D(("server reader_callback"));
1300 while((eol
= memchr(ptr
, '\n', bytes
))) {
1302 ev_reader_consume(reader
, eol
- (char *)ptr
);
1303 complete
= command(c
, ptr
);
1304 bytes
-= (eol
- (char *)ptr
);
1307 /* the command had better have set a new reader callback */
1309 /* there are further bytes to read, or we are at eof; arrange for the
1310 * command's reader callback to handle them */
1311 return ev_reader_incomplete(reader
);
1312 /* nothing's going on right now */
1315 /* command completed, we can go around and handle the next one */
1319 error(0, "S%x unterminated line", c
->tag
);
1320 D(("normal reader close"));
1323 D(("close associated writer"));
1324 ev_writer_close(c
->w
);
1331 static int listen_callback(ev_source
*ev
,
1333 const struct sockaddr
attribute((unused
)) *remote
,
1334 socklen_t
attribute((unused
)) rlen
,
1336 const struct listener
*l
= u
;
1337 struct conn
*c
= xmalloc(sizeof *c
);
1338 static unsigned tags
;
1340 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1345 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
1347 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
1351 c
->reader
= reader_callback
;
1354 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1355 if(!strcmp(config
->authorization_algorithm
, "sha1")
1356 || !strcmp(config
->authorization_algorithm
, "SHA1")) {
1357 sink_printf(ev_writer_sink(c
->w
), "231 %s\n",
1358 hex(c
->nonce
, sizeof c
->nonce
));
1360 sink_printf(ev_writer_sink(c
->w
), "231 %s %s\n",
1361 config
->authorization_algorithm
,
1362 hex(c
->nonce
, sizeof c
->nonce
));
1367 int server_start(ev_source
*ev
, int pf
,
1368 size_t socklen
, const struct sockaddr
*sa
,
1371 struct listener
*l
= xmalloc(sizeof *l
);
1372 static const int one
= 1;
1374 D(("server_init socket %s", name
));
1375 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1376 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1377 if(bind(fd
, sa
, socklen
) < 0) {
1378 error(errno
, "error binding to %s", name
);
1386 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
1391 int server_stop(ev_source
*ev
, int fd
) {
1393 return ev_listen_cancel(ev
, fd
);