2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2009 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 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU 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, see <http://www.gnu.org/licenses/>.
19 #include "disorder-server.h"
23 # define NONCE_SIZE 16
27 /** @brief Size of nonce in confirmation string in 32-bit words
29 * 64 bits gives 11 digits (in base 62).
31 # define CONFIRM_SIZE 2
34 int volume_left
, volume_right
; /* last known volume */
36 /** @brief Accept all well-formed login attempts
47 /** @brief One client connection */
49 /** @brief Read commands from here */
51 /** @brief Send responses to here */
53 /** @brief Underlying file descriptor */
55 /** @brief Unique identifier for connection used in log messages */
57 /** @brief Login name or NULL */
59 /** @brief Event loop */
61 /** @brief Nonce chosen for this connection */
62 unsigned char nonce
[NONCE_SIZE
];
63 /** @brief Current reader callback
65 * We change this depending on whether we're servicing the @b log command
67 ev_reader_callback
*reader
;
68 /** @brief Event log output sending to this connection */
69 struct eventlog_output
*lo
;
70 /** @brief Parent listener */
71 const struct listener
*l
;
72 /** @brief Login cookie or NULL */
74 /** @brief Connection rights */
76 /** @brief Next connection */
78 /** @brief True if pending rescan had 'wait' set */
82 /** @brief Linked list of connections */
83 static struct conn
*connections
;
85 static int reader_callback(ev_source
*ev
,
92 static const char *noyes
[] = { "no", "yes" };
94 /** @brief Remove a connection from the connection list */
95 static void remove_connection(struct conn
*c
) {
98 for(cc
= &connections
; *cc
&& *cc
!= c
; cc
= &(*cc
)->next
)
104 /** @brief Called when a connection's writer fails or is shut down
106 * If the connection still has a raeder that is cancelled.
108 static int writer_error(ev_source
attribute((unused
)) *ev
,
113 D(("server writer_error S%x %d", c
->tag
, errno_value
));
114 if(errno_value
== 0) {
116 D(("S%x writer completed", c
->tag
));
118 if(errno_value
!= EPIPE
)
119 error(errno_value
, "S%x write error on socket", c
->tag
);
121 D(("cancel reader"));
122 ev_reader_cancel(c
->r
);
125 D(("done cancel reader"));
129 remove_connection(c
);
133 /** @brief Called when a conncetion's reader fails or is shut down
135 * If connection still has a writer then it is closed.
137 static int reader_error(ev_source
attribute((unused
)) *ev
,
142 D(("server reader_error S%x %d", c
->tag
, errno_value
));
143 error(errno_value
, "S%x read error on socket", c
->tag
);
145 ev_writer_close(c
->w
);
149 remove_connection(c
);
153 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
155 disable_playing(c
->who
);
156 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
157 disable_playing(c
->who
);
159 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
160 return 1; /* completed */
162 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
163 return 1; /* completed */
166 static int c_enable(struct conn
*c
,
167 char attribute((unused
)) **vec
,
168 int attribute((unused
)) nvec
) {
169 enable_playing(c
->who
, c
->ev
);
170 /* Enable implicitly unpauses if there is nothing playing */
171 if(paused
&& !playing
) resume_playing(c
->who
);
172 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
173 return 1; /* completed */
176 static int c_enabled(struct conn
*c
,
177 char attribute((unused
)) **vec
,
178 int attribute((unused
)) nvec
) {
179 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
180 return 1; /* completed */
183 static int c_play(struct conn
*c
, char **vec
,
184 int attribute((unused
)) nvec
) {
186 struct queue_entry
*q
;
188 if(!trackdb_exists(vec
[0])) {
189 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
192 if(!(track
= trackdb_resolve(vec
[0]))) {
193 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
196 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
, origin_picked
);
198 /* If we added the first track, and something is playing, then prepare the
199 * new track. If nothing is playing then we don't bother as it wouldn't gain
201 if(q
== qhead
.next
&& playing
)
203 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
204 /* If the queue was empty but we are for some reason paused then
206 if(!playing
) resume_playing(0);
208 return 1; /* completed */
211 static int c_remove(struct conn
*c
, char **vec
,
212 int attribute((unused
)) nvec
) {
213 struct queue_entry
*q
;
215 if(!(q
= queue_find(vec
[0]))) {
216 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
219 if(!right_removable(c
->rights
, c
->who
, q
)) {
220 error(0, "%s attempted remove but lacks required rights", c
->who
);
221 sink_writes(ev_writer_sink(c
->w
),
222 "510 Not authorized to remove that track\n");
225 queue_remove(q
, c
->who
);
226 /* De-prepare the track. */
228 /* See about adding a new random track */
229 add_random_track(c
->ev
);
230 /* Prepare whatever the next head track is. */
231 if(qhead
.next
!= &qhead
)
232 prepare(c
->ev
, qhead
.next
);
234 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
235 return 1; /* completed */
238 static int c_scratch(struct conn
*c
,
242 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
243 return 1; /* completed */
245 /* TODO there is a bug here: if we specify an ID but it's not the currently
246 * playing track then you will get 550 if you weren't authorized to scratch
247 * the currently playing track. */
248 if(!right_scratchable(c
->rights
, c
->who
, playing
)) {
249 error(0, "%s attempted scratch but lacks required rights", c
->who
);
250 sink_writes(ev_writer_sink(c
->w
),
251 "510 Not authorized to scratch that track\n");
254 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
255 /* If you scratch an unpaused track then it is automatically unpaused */
257 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
258 return 1; /* completed */
261 static int c_pause(struct conn
*c
,
262 char attribute((unused
)) **vec
,
263 int attribute((unused
)) nvec
) {
265 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
266 return 1; /* completed */
269 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
270 return 1; /* completed */
272 if(pause_playing(c
->who
) < 0)
273 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
275 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
279 static int c_resume(struct conn
*c
,
280 char attribute((unused
)) **vec
,
281 int attribute((unused
)) nvec
) {
283 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
284 return 1; /* completed */
286 resume_playing(c
->who
);
287 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
291 static int c_shutdown(struct conn
*c
,
292 char attribute((unused
)) **vec
,
293 int attribute((unused
)) nvec
) {
294 info("S%x shut down by %s", c
->tag
, c
->who
);
295 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
296 ev_writer_flush(c
->w
);
300 static int c_reconfigure(struct conn
*c
,
301 char attribute((unused
)) **vec
,
302 int attribute((unused
)) nvec
) {
303 info("S%x reconfigure by %s", c
->tag
, c
->who
);
304 if(reconfigure(c
->ev
, 1))
305 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
307 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
308 return 1; /* completed */
311 static void finished_rescan(void *ru
) {
312 struct conn
*const c
= ru
;
314 sink_writes(ev_writer_sink(c
->w
), "250 rescan completed\n");
315 /* Turn this connection back on */
316 ev_reader_enable(c
->r
);
319 static void start_fresh_rescan(void *ru
) {
320 struct conn
*const c
= ru
;
322 if(trackdb_rescan_underway()) {
323 /* Some other waiter beat us to it. However in this case we're happy to
324 * piggyback; the requirement is that a new rescan be started, not that it
325 * was _our_ rescan. */
327 /* We block until the rescan completes */
328 trackdb_add_rescanned(finished_rescan
, c
);
330 /* We report that the new rescan has started */
331 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
332 /* Turn this connection back on */
333 ev_reader_enable(c
->r
);
336 /* We are the first connection to get a callback so we must start a
339 /* We want to block until the new rescan completes */
340 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
342 /* We can report back immediately */
343 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
344 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
345 /* Turn this connection back on */
346 ev_reader_enable(c
->r
);
351 static int c_rescan(struct conn
*c
,
354 int flag_wait
= 0, flag_fresh
= 0, n
;
357 for(n
= 0; n
< nvec
; ++n
) {
358 if(!strcmp(vec
[n
], "wait"))
359 flag_wait
= 1; /* wait for rescan to complete */
361 /* Currently disabled because untested (and hard to test). */
362 else if(!strcmp(vec
[n
], "fresh"))
363 flag_fresh
= 1; /* don't piggyback underway rescan */
366 sink_writes(ev_writer_sink(c
->w
), "550 unknown flag\n");
367 return 1; /* completed */
370 /* Report what was requested */
371 info("S%x rescan by %s (%s %s)", c
->tag
, c
->who
,
372 flag_wait ?
"wait" : "",
373 flag_fresh ?
"fresh" : "");
374 if(trackdb_rescan_underway()) {
376 /* We want a fresh rescan but there is already one underway. Arrange a
377 * callback when it completes and then set off a new one. */
378 c
->rescan_wait
= flag_wait
;
379 trackdb_add_rescanned(start_fresh_rescan
, c
);
383 sink_writes(ev_writer_sink(c
->w
), "250 rescan queued\n");
387 /* There's a rescan underway, and it's acceptable to piggyback on it */
389 /* We want to block until completion. */
390 trackdb_add_rescanned(finished_rescan
, c
);
393 /* We don't want to block. So we just report that things are in
395 sink_writes(ev_writer_sink(c
->w
), "250 rescan already underway\n");
400 /* No rescan is underway. fresh is therefore irrelevant. */
402 /* We want to block until completion */
403 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
406 /* We don't want to block. */
407 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
408 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
409 return 1; /* completed */
414 static int c_version(struct conn
*c
,
415 char attribute((unused
)) **vec
,
416 int attribute((unused
)) nvec
) {
417 /* VERSION had better only use the basic character set */
418 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
419 return 1; /* completed */
422 static int c_playing(struct conn
*c
,
423 char attribute((unused
)) **vec
,
424 int attribute((unused
)) nvec
) {
426 queue_fix_sofar(playing
);
427 playing
->expected
= 0;
428 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
430 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
431 return 1; /* completed */
434 static const char *connection_host(struct conn
*c
) {
437 struct sockaddr_in in
;
438 struct sockaddr_in6 in6
;
444 /* get connection data */
446 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
447 error(errno
, "S%x error calling getpeername", c
->tag
);
450 if(c
->l
->pf
!= PF_UNIX
) {
451 if((n
= getnameinfo(&u
.sa
, l
,
452 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
453 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
456 return xstrdup(host
);
461 static int c_user(struct conn
*c
,
463 int attribute((unused
)) nvec
) {
465 const char *res
, *host
, *password
;
469 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
472 /* get connection data */
473 if(!(host
= connection_host(c
))) {
474 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
478 k
= trackdb_getuserinfo(vec
[0]);
479 /* reject nonexistent users */
481 error(0, "S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
482 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
485 /* reject unconfirmed users */
486 if(kvp_get(k
, "confirmation")) {
487 error(0, "S%x unconfirmed user '%s' from %s", c
->tag
, vec
[0], host
);
488 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
491 password
= kvp_get(k
, "password");
492 if(!password
) password
= "";
493 if(parse_rights(kvp_get(k
, "rights"), &rights
, 1)) {
494 error(0, "error parsing rights for %s", vec
[0]);
495 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
498 /* check whether the response is right */
499 res
= authhash(c
->nonce
, sizeof c
->nonce
, password
,
500 config
->authorization_algorithm
);
501 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
504 /* currently we only bother logging remote connections */
505 if(strcmp(host
, "local"))
506 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
508 c
->rights
|= RIGHT__LOCAL
;
509 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
512 /* oops, response was wrong */
513 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
514 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
518 static int c_recent(struct conn
*c
,
519 char attribute((unused
)) **vec
,
520 int attribute((unused
)) nvec
) {
521 const struct queue_entry
*q
;
523 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
524 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
525 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
526 sink_writes(ev_writer_sink(c
->w
), ".\n");
527 return 1; /* completed */
530 static int c_queue(struct conn
*c
,
531 char attribute((unused
)) **vec
,
532 int attribute((unused
)) nvec
) {
533 struct queue_entry
*q
;
538 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
539 if(playing_is_enabled() && !paused
) {
541 queue_fix_sofar(playing
);
542 if((l
= trackdb_get(playing
->track
, "_length"))
543 && (length
= atol(l
))) {
545 when
+= length
- playing
->sofar
+ config
->gap
;
548 /* Nothing is playing but playing is enabled, so whatever is
549 * first in the queue can be expected to start immediately. */
552 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
553 /* fill in estimated start time */
555 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
556 /* update for next track */
558 if((l
= trackdb_get(q
->track
, "_length"))
559 && (length
= atol(l
)))
560 when
+= length
+ config
->gap
;
565 sink_writes(ev_writer_sink(c
->w
), ".\n");
566 return 1; /* completed */
569 static int output_list(struct conn
*c
, char **vec
) {
571 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
572 sink_writes(ev_writer_sink(c
->w
), ".\n");
576 static int files_dirs(struct conn
*c
,
579 enum trackdb_listable what
) {
580 const char *dir
, *re
, *errstr
;
586 case 0: dir
= 0; re
= 0; break;
587 case 1: dir
= vec
[0]; re
= 0; break;
588 case 2: dir
= vec
[0]; re
= vec
[1]; break;
591 /* A bit of a bodge to make sure the args don't trample on cache keys */
592 if(dir
&& strchr(dir
, '\n')) {
593 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
596 if(re
&& strchr(re
, '\n')) {
597 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
600 /* We bother eliminating "" because the web interface is relatively
601 * likely to send it */
603 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
604 fvec
= (char **)cache_get(&cache_files_type
, key
);
606 /* Got a cache hit, don't store the answer in the cache */
609 rec
= 0; /* quieten compiler */
611 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
613 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
614 &errstr
, &erroffset
, 0))) {
615 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
619 /* It only counts as a miss if the regexp was valid. */
620 ++cache_files_misses
;
623 /* No regexp, don't bother caching the result */
629 /* No cache hit (either because a miss, or because we did not look) so do
632 fvec
= trackdb_list(dir
, 0, what
, rec
);
634 fvec
= trackdb_list(0, 0, what
, rec
);
637 /* Put the answer in the cache */
638 cache_put(&cache_files_type
, key
, fvec
);
639 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
640 return output_list(c
, fvec
);
643 static int c_files(struct conn
*c
,
646 return files_dirs(c
, vec
, nvec
, trackdb_files
);
649 static int c_dirs(struct conn
*c
,
652 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
655 static int c_allfiles(struct conn
*c
,
658 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
661 static int c_get(struct conn
*c
,
663 int attribute((unused
)) nvec
) {
664 const char *v
, *track
;
666 if(!(track
= trackdb_resolve(vec
[0]))) {
667 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
670 if(vec
[1][0] != '_' && (v
= trackdb_get(track
, vec
[1])))
671 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
673 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
677 static int c_length(struct conn
*c
,
679 int attribute((unused
)) nvec
) {
680 const char *track
, *v
;
682 if(!(track
= trackdb_resolve(vec
[0]))) {
683 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
686 if((v
= trackdb_get(track
, "_length")))
687 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
689 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
693 static int c_set(struct conn
*c
,
695 int attribute((unused
)) nvec
) {
698 if(!(track
= trackdb_resolve(vec
[0]))) {
699 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
702 if(vec
[1][0] != '_' && !trackdb_set(track
, vec
[1], vec
[2]))
703 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
705 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
709 static int c_prefs(struct conn
*c
,
711 int attribute((unused
)) nvec
) {
715 if(!(track
= trackdb_resolve(vec
[0]))) {
716 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
719 k
= trackdb_get_all(track
);
720 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
721 for(; k
; k
= k
->next
)
722 if(k
->name
[0] != '_') /* omit internal values */
723 sink_printf(ev_writer_sink(c
->w
),
724 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
725 sink_writes(ev_writer_sink(c
->w
), ".\n");
729 static int c_exists(struct conn
*c
,
731 int attribute((unused
)) nvec
) {
732 /* trackdb_exists() does its own alias checking */
733 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
737 static void search_parse_error(const char *msg
, void *u
) {
738 *(const char **)u
= msg
;
741 static int c_search(struct conn
*c
,
743 int attribute((unused
)) nvec
) {
744 char **terms
, **results
;
745 int nterms
, nresults
, n
;
746 const char *e
= "unknown error";
748 /* This is a bit of a bodge. Initially it's there to make the eclient
749 * interface a bit more convenient to add searching to, but it has the more
750 * compelling advantage that if everything uses it, then interpretation of
751 * user-supplied search strings will be the same everywhere. */
752 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
753 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
755 results
= trackdb_search(terms
, nterms
, &nresults
);
756 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
757 for(n
= 0; n
< nresults
; ++n
)
758 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
759 sink_writes(ev_writer_sink(c
->w
), ".\n");
764 static int c_random_enable(struct conn
*c
,
765 char attribute((unused
)) **vec
,
766 int attribute((unused
)) nvec
) {
767 enable_random(c
->who
, c
->ev
);
768 /* Enable implicitly unpauses if there is nothing playing */
769 if(paused
&& !playing
) resume_playing(c
->who
);
770 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
771 return 1; /* completed */
774 static int c_random_disable(struct conn
*c
,
775 char attribute((unused
)) **vec
,
776 int attribute((unused
)) nvec
) {
777 disable_random(c
->who
);
778 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
779 return 1; /* completed */
782 static int c_random_enabled(struct conn
*c
,
783 char attribute((unused
)) **vec
,
784 int attribute((unused
)) nvec
) {
785 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
786 return 1; /* completed */
789 static void got_stats(char *stats
, void *u
) {
790 struct conn
*const c
= u
;
792 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
793 /* Now we can start processing commands again */
794 ev_reader_enable(c
->r
);
797 static int c_stats(struct conn
*c
,
798 char attribute((unused
)) **vec
,
799 int attribute((unused
)) nvec
) {
800 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
801 return 0; /* not yet complete */
804 static int c_volume(struct conn
*c
,
816 l
= r
= atoi(vec
[0]);
827 rights
= set ? RIGHT_VOLUME
: RIGHT_READ
;
828 if(!(c
->rights
& rights
)) {
829 error(0, "%s attempted to set volume but lacks required rights", c
->who
);
830 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
833 if(!api
|| !api
->set_volume
) {
834 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
837 (set ? api
->set_volume
: api
->get_volume
)(&l
, &r
);
838 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
839 if(l
!= volume_left
|| r
!= volume_right
) {
842 snprintf(lb
, sizeof lb
, "%d", l
);
843 snprintf(rb
, sizeof rb
, "%d", r
);
844 eventlog("volume", lb
, rb
, (char *)0);
849 /** @brief Called when data arrives on a log connection
851 * We just discard all such data. The client may occasionally send data as a
854 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
856 void attribute((unused
)) *ptr
,
858 int attribute((unused
)) eof
,
859 void attribute((unused
)) *u
) {
862 ev_reader_consume(reader
, bytes
);
864 /* Oops, that's all for now */
865 D(("logging reader eof"));
868 ev_writer_close(c
->w
);
872 remove_connection(c
);
877 static void logclient(const char *msg
, void *user
) {
878 struct conn
*c
= user
;
881 /* This connection has gone up in smoke for some reason */
882 eventlog_remove(c
->lo
);
886 /* user_* messages are restricted */
887 if(!strncmp(msg
, "user_", 5)) {
888 /* They are only sent to admin users */
889 if(!(c
->rights
& RIGHT_ADMIN
))
891 /* They are not sent over TCP connections unless remote user-management is
893 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
))
896 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
897 (uintmax_t)time(0), msg
);
900 static int c_log(struct conn
*c
,
901 char attribute((unused
)) **vec
,
902 int attribute((unused
)) nvec
) {
905 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
906 /* pump out initial state */
908 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
910 playing_is_enabled() ?
"enable_play" : "disable_play");
911 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
913 random_is_enabled() ?
"enable_random" : "disable_random");
914 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
916 paused ?
"pause" : "resume");
918 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
921 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
922 (uintmax_t)now
, volume_left
, volume_right
);
923 c
->lo
= xmalloc(sizeof *c
->lo
);
924 c
->lo
->fn
= logclient
;
927 c
->reader
= logging_reader_callback
;
931 /** @brief Test whether a move is allowed
932 * @param c Connection
933 * @param qs List of IDs on queue
934 * @param nqs Number of IDs
935 * @return 0 if move is prohibited, non-0 if it is allowed
937 static int has_move_rights(struct conn
*c
, struct queue_entry
**qs
, int nqs
) {
938 for(; nqs
> 0; ++qs
, --nqs
) {
939 struct queue_entry
*const q
= *qs
;
941 if(!right_movable(c
->rights
, c
->who
, q
))
947 static int c_move(struct conn
*c
,
949 int attribute((unused
)) nvec
) {
950 struct queue_entry
*q
;
953 if(!(q
= queue_find(vec
[0]))) {
954 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
957 if(!has_move_rights(c
, &q
, 1)) {
958 error(0, "%s attempted move but lacks required rights", c
->who
);
959 sink_writes(ev_writer_sink(c
->w
),
960 "510 Not authorized to move that track\n");
963 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
964 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
965 /* If we've moved to the head of the queue then prepare the track. */
971 static int c_moveafter(struct conn
*c
,
973 int attribute((unused
)) nvec
) {
974 struct queue_entry
*q
, **qs
;
978 if(!(q
= queue_find(vec
[0]))) {
979 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
986 qs
= xcalloc(nvec
, sizeof *qs
);
987 for(n
= 0; n
< nvec
; ++n
)
988 if(!(qs
[n
] = queue_find(vec
[n
]))) {
989 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
992 if(!has_move_rights(c
, qs
, nvec
)) {
993 error(0, "%s attempted moveafter but lacks required rights", c
->who
);
994 sink_writes(ev_writer_sink(c
->w
),
995 "510 Not authorized to move those tracks\n");
998 queue_moveafter(q
, nvec
, qs
, c
->who
);
999 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
1000 /* If we've moved to the head of the queue then prepare the track. */
1006 static int c_part(struct conn
*c
,
1008 int attribute((unused
)) nvec
) {
1011 if(!(track
= trackdb_resolve(vec
[0]))) {
1012 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1015 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
1016 quoteutf8(trackdb_getpart(track
, vec
[1], vec
[2])));
1020 static int c_resolve(struct conn
*c
,
1022 int attribute((unused
)) nvec
) {
1025 if(!(track
= trackdb_resolve(vec
[0]))) {
1026 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1029 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(track
));
1033 static int c_tags(struct conn
*c
,
1034 char attribute((unused
)) **vec
,
1035 int attribute((unused
)) nvec
) {
1036 char **tags
= trackdb_alltags();
1038 sink_printf(ev_writer_sink(c
->w
), "253 Tag list follows\n");
1040 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1041 **tags
== '.' ?
"." : "", *tags
);
1044 sink_writes(ev_writer_sink(c
->w
), ".\n");
1045 return 1; /* completed */
1048 static int c_set_global(struct conn
*c
,
1050 int attribute((unused
)) nvec
) {
1051 if(vec
[0][0] == '_') {
1052 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
1055 trackdb_set_global(vec
[0], vec
[1], c
->who
);
1056 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1060 static int c_get_global(struct conn
*c
,
1062 int attribute((unused
)) nvec
) {
1063 const char *s
= trackdb_get_global(vec
[0]);
1066 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(s
));
1068 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
1072 static int c_nop(struct conn
*c
,
1073 char attribute((unused
)) **vec
,
1074 int attribute((unused
)) nvec
) {
1075 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
1079 static int c_new(struct conn
*c
,
1089 if(max
<= 0 || max
> config
->new_max
)
1090 max
= config
->new_max
;
1091 tracks
= trackdb_new(0, max
);
1092 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
1095 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1096 **tracks
== '.' ?
"." : "", *tracks
);
1099 sink_writes(ev_writer_sink(c
->w
), ".\n");
1100 return 1; /* completed */
1104 static int c_rtp_address(struct conn
*c
,
1105 char attribute((unused
)) **vec
,
1106 int attribute((unused
)) nvec
) {
1107 if(api
== &uaudio_rtp
) {
1110 netaddress_format(&config
->broadcast
, NULL
, &addr
);
1111 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
1113 quoteutf8(addr
[2]));
1115 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
1119 static int c_cookie(struct conn
*c
,
1121 int attribute((unused
)) nvec
) {
1126 /* Can't log in twice on the same connection */
1128 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
1131 /* Get some kind of peer identifcation */
1132 if(!(host
= connection_host(c
))) {
1133 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1136 /* Check the cookie */
1137 user
= verify_cookie(vec
[0], &rights
);
1139 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1146 if(strcmp(host
, "local"))
1147 info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1149 c
->rights
|= RIGHT__LOCAL
;
1150 /* Response contains username so client knows who they are acting as */
1151 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1155 static int c_make_cookie(struct conn
*c
,
1156 char attribute((unused
)) **vec
,
1157 int attribute((unused
)) nvec
) {
1158 const char *cookie
= make_cookie(c
->who
);
1161 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cookie
));
1163 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1167 static int c_revoke(struct conn
*c
,
1168 char attribute((unused
)) **vec
,
1169 int attribute((unused
)) nvec
) {
1171 revoke_cookie(c
->cookie
);
1172 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1174 sink_writes(ev_writer_sink(c
->w
), "550 Did not log in with cookie\n");
1178 static int c_adduser(struct conn
*c
,
1183 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1184 error(0, "S%x: remote adduser", c
->tag
);
1185 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1190 if(parse_rights(vec
[2], 0, 1)) {
1191 sink_writes(ev_writer_sink(c
->w
), "550 Invalid rights list\n");
1195 rights
= config
->default_rights
;
1196 if(trackdb_adduser(vec
[0], vec
[1], rights
,
1197 0/*email*/, 0/*confirmation*/))
1198 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1200 sink_writes(ev_writer_sink(c
->w
), "250 User created\n");
1204 static int c_deluser(struct conn
*c
,
1206 int attribute((unused
)) nvec
) {
1209 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1210 error(0, "S%x: remote deluser", c
->tag
);
1211 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1214 if(trackdb_deluser(vec
[0])) {
1215 sink_writes(ev_writer_sink(c
->w
), "550 Cannot delete user\n");
1218 /* Zap connections belonging to deleted user */
1219 for(d
= connections
; d
; d
= d
->next
)
1220 if(!strcmp(d
->who
, vec
[0]))
1222 sink_writes(ev_writer_sink(c
->w
), "250 User deleted\n");
1226 static int c_edituser(struct conn
*c
,
1228 int attribute((unused
)) nvec
) {
1231 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1232 error(0, "S%x: remote edituser", c
->tag
);
1233 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1236 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1237 * address and password. */
1238 if((c
->rights
& RIGHT_ADMIN
)
1239 || (!strcmp(c
->who
, vec
[0])
1240 && (!strcmp(vec
[1], "email")
1241 || !strcmp(vec
[1], "password")))) {
1242 if(trackdb_edituserinfo(vec
[0], vec
[1], vec
[2])) {
1243 sink_writes(ev_writer_sink(c
->w
), "550 Failed to change setting\n");
1246 if(!strcmp(vec
[1], "password")) {
1247 /* Zap all connections for this user after a password change */
1248 for(d
= connections
; d
; d
= d
->next
)
1249 if(!strcmp(d
->who
, vec
[0]))
1251 } else if(!strcmp(vec
[1], "rights")) {
1252 /* Update rights for this user */
1255 if(!parse_rights(vec
[2], &r
, 1)) {
1256 const char *new_rights
= rights_string(r
);
1257 for(d
= connections
; d
; d
= d
->next
) {
1258 if(!strcmp(d
->who
, vec
[0])) {
1261 /* Notify any log connections */
1263 sink_printf(ev_writer_sink(d
->w
),
1264 "%"PRIxMAX
" rights_changed %s\n",
1266 quoteutf8(new_rights
));
1271 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1273 error(0, "%s attempted edituser but lacks required rights", c
->who
);
1274 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1279 static int c_userinfo(struct conn
*c
,
1280 char attribute((unused
)) **vec
,
1281 int attribute((unused
)) nvec
) {
1285 /* We allow remote querying of rights so that clients can figure out what
1286 * they're allowed to do */
1287 if(!config
->remote_userman
1288 && !(c
->rights
& RIGHT__LOCAL
)
1289 && strcmp(vec
[1], "rights")) {
1290 error(0, "S%x: remote userinfo %s %s", c
->tag
, vec
[0], vec
[1]);
1291 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1294 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
1295 * address and rights list. */
1296 if((c
->rights
& RIGHT_ADMIN
)
1297 || (!strcmp(c
->who
, vec
[0])
1298 && (!strcmp(vec
[1], "email")
1299 || !strcmp(vec
[1], "rights")))) {
1300 if((k
= trackdb_getuserinfo(vec
[0])))
1301 if((value
= kvp_get(k
, vec
[1])))
1302 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(value
));
1304 sink_writes(ev_writer_sink(c
->w
), "555 Not set\n");
1306 sink_writes(ev_writer_sink(c
->w
), "550 No such user\n");
1308 error(0, "%s attempted userinfo but lacks required rights", c
->who
);
1309 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1314 static int c_users(struct conn
*c
,
1315 char attribute((unused
)) **vec
,
1316 int attribute((unused
)) nvec
) {
1317 /* TODO de-dupe with c_tags */
1318 char **users
= trackdb_listusers();
1320 sink_writes(ev_writer_sink(c
->w
), "253 User list follows\n");
1322 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1323 **users
== '.' ?
"." : "", *users
);
1326 sink_writes(ev_writer_sink(c
->w
), ".\n");
1327 return 1; /* completed */
1330 static int c_register(struct conn
*c
,
1332 int attribute((unused
)) nvec
) {
1334 uint32_t nonce
[CONFIRM_SIZE
];
1335 char nonce_str
[(32 * CONFIRM_SIZE
) / 5 + 1];
1337 /* The confirmation string is username/base62(nonce). The confirmation
1338 * process will pick the username back out to identify them but the _whole_
1339 * string is used as the confirmation string. Base 62 means we used only
1340 * letters and digits, minimizing the chance of the URL being mispasted. */
1341 gcry_randomize(nonce
, sizeof nonce
, GCRY_STRONG_RANDOM
);
1342 if(basen(nonce
, CONFIRM_SIZE
, nonce_str
, sizeof nonce_str
, 62)) {
1343 error(0, "buffer too small encoding confirmation string");
1344 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1346 byte_xasprintf(&cs
, "%s/%s", vec
[0], nonce_str
);
1347 if(trackdb_adduser(vec
[0], vec
[1], config
->default_rights
, vec
[2], cs
))
1348 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1350 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cs
));
1354 static int c_confirm(struct conn
*c
,
1356 int attribute((unused
)) nvec
) {
1361 /* Get some kind of peer identifcation */
1362 if(!(host
= connection_host(c
))) {
1363 sink_writes(ev_writer_sink(c
->w
), "530 Authentication failure\n");
1366 /* Picking the LAST / means we don't (here) rule out slashes in usernames. */
1367 if(!(sep
= strrchr(vec
[0], '/'))) {
1368 sink_writes(ev_writer_sink(c
->w
), "550 Malformed confirmation string\n");
1371 user
= xstrndup(vec
[0], sep
- vec
[0]);
1372 if(trackdb_confirm(user
, vec
[0], &rights
))
1373 sink_writes(ev_writer_sink(c
->w
), "550 Incorrect confirmation string\n");
1378 if(strcmp(host
, "local"))
1379 info("S%x %s confirmed from %s", c
->tag
, user
, host
);
1381 c
->rights
|= RIGHT__LOCAL
;
1382 /* Response contains username so client knows who they are acting as */
1383 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1388 static int sent_reminder(ev_source
attribute((unused
)) *ev
,
1389 pid_t
attribute((unused
)) pid
,
1391 const struct rusage
attribute((unused
)) *rusage
,
1393 struct conn
*const c
= u
;
1395 /* Tell the client what went down */
1397 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1399 error(0, "reminder subprocess %s", wstat(status
));
1400 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1402 /* Re-enable this connection */
1403 ev_reader_enable(c
->r
);
1407 static int c_reminder(struct conn
*c
,
1409 int attribute((unused
)) nvec
) {
1411 const char *password
, *email
, *text
, *encoding
, *charset
, *content_type
;
1416 static hash
*last_reminder
;
1418 if(!config
->mail_sender
) {
1419 error(0, "cannot send password reminders because mail_sender not set");
1420 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1423 if(!(k
= trackdb_getuserinfo(vec
[0]))) {
1424 error(0, "reminder for user '%s' who does not exist", vec
[0]);
1425 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1428 if(!(email
= kvp_get(k
, "email"))
1429 || !email_valid(email
)) {
1430 error(0, "user '%s' has no valid email address", vec
[0]);
1431 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1434 if(!(password
= kvp_get(k
, "password"))
1436 error(0, "user '%s' has no password", vec
[0]);
1437 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1440 /* Rate-limit reminders. This hash is bounded in size by the number of
1441 * users. If this is actually a problem for anyone then we can periodically
1444 last_reminder
= hash_new(sizeof (time_t));
1445 last
= hash_find(last_reminder
, vec
[0]);
1447 if(last
&& now
< *last
+ config
->reminder_interval
) {
1448 error(0, "sent a password reminder to '%s' too recently", vec
[0]);
1449 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1452 /* Send the reminder */
1453 /* TODO this should be templatized and to some extent merged with
1454 * the code in act_register() */
1455 byte_xasprintf((char **)&text
,
1456 "Someone requested that you be sent a reminder of your DisOrder password.\n"
1457 "Your password is:\n"
1460 if(!(text
= mime_encode_text(text
, &charset
, &encoding
)))
1461 fatal(0, "cannot encode email");
1462 byte_xasprintf((char **)&content_type
, "text/plain;charset=%s",
1463 quote822(charset
, 0));
1464 pid
= sendmail_subprocess("", config
->mail_sender
, email
,
1465 "DisOrder password reminder",
1466 encoding
, content_type
, text
);
1468 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1471 hash_add(last_reminder
, vec
[0], &now
, HASH_INSERT_OR_REPLACE
);
1472 info("sending a passsword reminder to user '%s'", vec
[0]);
1473 /* We can only continue when the subprocess finishes */
1474 ev_child(c
->ev
, pid
, 0, sent_reminder
, c
);
1478 static int c_schedule_list(struct conn
*c
,
1479 char attribute((unused
)) **vec
,
1480 int attribute((unused
)) nvec
) {
1481 char **ids
= schedule_list(0);
1482 sink_writes(ev_writer_sink(c
->w
), "253 ID list follows\n");
1484 sink_printf(ev_writer_sink(c
->w
), "%s\n", *ids
++);
1485 sink_writes(ev_writer_sink(c
->w
), ".\n");
1486 return 1; /* completed */
1489 static int c_schedule_get(struct conn
*c
,
1491 int attribute((unused
)) nvec
) {
1492 struct kvp
*actiondata
= schedule_get(vec
[0]), *k
;
1495 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1496 return 1; /* completed */
1498 /* Scheduled events are public information. Anyone with RIGHT_READ can see
1500 sink_writes(ev_writer_sink(c
->w
), "253 Event information follows\n");
1501 for(k
= actiondata
; k
; k
= k
->next
)
1502 sink_printf(ev_writer_sink(c
->w
), " %s %s\n",
1503 quoteutf8(k
->name
), quoteutf8(k
->value
));
1504 sink_writes(ev_writer_sink(c
->w
), ".\n");
1505 return 1; /* completed */
1508 static int c_schedule_del(struct conn
*c
,
1510 int attribute((unused
)) nvec
) {
1511 struct kvp
*actiondata
= schedule_get(vec
[0]);
1514 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1515 return 1; /* completed */
1517 /* If you have admin rights you can delete anything. If you don't then you
1518 * can only delete your own scheduled events. */
1519 if(!(c
->rights
& RIGHT_ADMIN
)) {
1520 const char *who
= kvp_get(actiondata
, "who");
1522 if(!who
|| !c
->who
|| strcmp(who
, c
->who
)) {
1523 sink_writes(ev_writer_sink(c
->w
), "551 Not authorized\n");
1524 return 1; /* completed */
1527 if(schedule_del(vec
[0]))
1528 sink_writes(ev_writer_sink(c
->w
), "550 Could not delete scheduled event\n");
1530 sink_writes(ev_writer_sink(c
->w
), "250 Deleted\n");
1531 return 1; /* completed */
1534 static int c_schedule_add(struct conn
*c
,
1537 struct kvp
*actiondata
= 0;
1540 /* Standard fields */
1541 kvp_set(&actiondata
, "who", c
->who
);
1542 kvp_set(&actiondata
, "when", vec
[0]);
1543 kvp_set(&actiondata
, "priority", vec
[1]);
1544 kvp_set(&actiondata
, "action", vec
[2]);
1545 /* Action-dependent fields */
1546 if(!strcmp(vec
[2], "play")) {
1548 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1551 if(!trackdb_exists(vec
[3])) {
1552 sink_writes(ev_writer_sink(c
->w
), "550 Track is not in database\n");
1555 kvp_set(&actiondata
, "track", vec
[3]);
1556 } else if(!strcmp(vec
[2], "set-global")) {
1557 if(nvec
< 4 || nvec
> 5) {
1558 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1561 kvp_set(&actiondata
, "key", vec
[3]);
1563 kvp_set(&actiondata
, "value", vec
[4]);
1565 sink_writes(ev_writer_sink(c
->w
), "550 Unknown action\n");
1568 /* schedule_add() checks user rights */
1569 id
= schedule_add(c
->ev
, actiondata
);
1571 sink_writes(ev_writer_sink(c
->w
), "550 Cannot add scheduled event\n");
1573 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", id
);
1577 static int c_adopt(struct conn
*c
,
1579 int attribute((unused
)) nvec
) {
1580 struct queue_entry
*q
;
1583 sink_writes(ev_writer_sink(c
->w
), "550 no identity\n");
1586 if(!(q
= queue_find(vec
[0]))) {
1587 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1590 if(q
->origin
!= origin_random
) {
1591 sink_writes(ev_writer_sink(c
->w
), "550 not a random track\n");
1594 q
->origin
= origin_adopted
;
1595 q
->submitter
= xstrdup(c
->who
);
1596 eventlog("adopted", q
->id
, q
->submitter
, (char *)0);
1598 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1602 static const struct command
{
1603 /** @brief Command name */
1606 /** @brief Minimum number of arguments */
1609 /** @brief Maximum number of arguments */
1612 /** @brief Function to process command */
1613 int (*fn
)(struct conn
*, char **, int);
1615 /** @brief Rights required to execute command
1617 * 0 means that the command can be issued without logging in. If multiple
1618 * bits are listed here any of those rights will do.
1622 { "adduser", 2, 3, c_adduser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1623 { "adopt", 1, 1, c_adopt
, RIGHT_PLAY
},
1624 { "allfiles", 0, 2, c_allfiles
, RIGHT_READ
},
1625 { "confirm", 1, 1, c_confirm
, 0 },
1626 { "cookie", 1, 1, c_cookie
, 0 },
1627 { "deluser", 1, 1, c_deluser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1628 { "dirs", 0, 2, c_dirs
, RIGHT_READ
},
1629 { "disable", 0, 1, c_disable
, RIGHT_GLOBAL_PREFS
},
1630 { "edituser", 3, 3, c_edituser
, RIGHT_ADMIN
|RIGHT_USERINFO
},
1631 { "enable", 0, 0, c_enable
, RIGHT_GLOBAL_PREFS
},
1632 { "enabled", 0, 0, c_enabled
, RIGHT_READ
},
1633 { "exists", 1, 1, c_exists
, RIGHT_READ
},
1634 { "files", 0, 2, c_files
, RIGHT_READ
},
1635 { "get", 2, 2, c_get
, RIGHT_READ
},
1636 { "get-global", 1, 1, c_get_global
, RIGHT_READ
},
1637 { "length", 1, 1, c_length
, RIGHT_READ
},
1638 { "log", 0, 0, c_log
, RIGHT_READ
},
1639 { "make-cookie", 0, 0, c_make_cookie
, RIGHT_READ
},
1640 { "move", 2, 2, c_move
, RIGHT_MOVE__MASK
},
1641 { "moveafter", 1, INT_MAX
, c_moveafter
, RIGHT_MOVE__MASK
},
1642 { "new", 0, 1, c_new
, RIGHT_READ
},
1643 { "nop", 0, 0, c_nop
, 0 },
1644 { "part", 3, 3, c_part
, RIGHT_READ
},
1645 { "pause", 0, 0, c_pause
, RIGHT_PAUSE
},
1646 { "play", 1, 1, c_play
, RIGHT_PLAY
},
1647 { "playing", 0, 0, c_playing
, RIGHT_READ
},
1648 { "prefs", 1, 1, c_prefs
, RIGHT_READ
},
1649 { "queue", 0, 0, c_queue
, RIGHT_READ
},
1650 { "random-disable", 0, 0, c_random_disable
, RIGHT_GLOBAL_PREFS
},
1651 { "random-enable", 0, 0, c_random_enable
, RIGHT_GLOBAL_PREFS
},
1652 { "random-enabled", 0, 0, c_random_enabled
, RIGHT_READ
},
1653 { "recent", 0, 0, c_recent
, RIGHT_READ
},
1654 { "reconfigure", 0, 0, c_reconfigure
, RIGHT_ADMIN
},
1655 { "register", 3, 3, c_register
, RIGHT_REGISTER
|RIGHT__LOCAL
},
1656 { "reminder", 1, 1, c_reminder
, RIGHT__LOCAL
},
1657 { "remove", 1, 1, c_remove
, RIGHT_REMOVE__MASK
},
1658 { "rescan", 0, INT_MAX
, c_rescan
, RIGHT_RESCAN
},
1659 { "resolve", 1, 1, c_resolve
, RIGHT_READ
},
1660 { "resume", 0, 0, c_resume
, RIGHT_PAUSE
},
1661 { "revoke", 0, 0, c_revoke
, RIGHT_READ
},
1662 { "rtp-address", 0, 0, c_rtp_address
, 0 },
1663 { "schedule-add", 3, INT_MAX
, c_schedule_add
, RIGHT_READ
},
1664 { "schedule-del", 1, 1, c_schedule_del
, RIGHT_READ
},
1665 { "schedule-get", 1, 1, c_schedule_get
, RIGHT_READ
},
1666 { "schedule-list", 0, 0, c_schedule_list
, RIGHT_READ
},
1667 { "scratch", 0, 1, c_scratch
, RIGHT_SCRATCH__MASK
},
1668 { "search", 1, 1, c_search
, RIGHT_READ
},
1669 { "set", 3, 3, c_set
, RIGHT_PREFS
, },
1670 { "set-global", 2, 2, c_set_global
, RIGHT_GLOBAL_PREFS
},
1671 { "shutdown", 0, 0, c_shutdown
, RIGHT_ADMIN
},
1672 { "stats", 0, 0, c_stats
, RIGHT_READ
},
1673 { "tags", 0, 0, c_tags
, RIGHT_READ
},
1674 { "unset", 2, 2, c_set
, RIGHT_PREFS
},
1675 { "unset-global", 1, 1, c_set_global
, RIGHT_GLOBAL_PREFS
},
1676 { "user", 2, 2, c_user
, 0 },
1677 { "userinfo", 2, 2, c_userinfo
, RIGHT_READ
},
1678 { "users", 0, 0, c_users
, RIGHT_READ
},
1679 { "version", 0, 0, c_version
, RIGHT_READ
},
1680 { "volume", 0, 2, c_volume
, RIGHT_READ
|RIGHT_VOLUME
}
1683 static void command_error(const char *msg
, void *u
) {
1686 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1689 /* process a command. Return 1 if complete, 0 if incomplete. */
1690 static int command(struct conn
*c
, char *line
) {
1694 D(("server command %s", line
));
1695 /* We force everything into NFC as early as possible */
1696 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1697 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
1700 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1701 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1705 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1708 if((n
= TABLE_FIND(commands
, name
, vec
[0])) < 0)
1709 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1711 if(commands
[n
].rights
1712 && !(c
->rights
& commands
[n
].rights
)) {
1713 error(0, "%s attempted %s but lacks required rights", c
->who ? c
->who
: "NULL",
1715 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
1720 if(nvec
< commands
[n
].minargs
) {
1721 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1724 if(nvec
> commands
[n
].maxargs
) {
1725 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1728 return commands
[n
].fn(c
, vec
, nvec
);
1730 return 1; /* completed */
1733 /* redirect to the right reader callback for our current state */
1734 static int redirect_reader_callback(ev_source
*ev
,
1742 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
1745 /* the main command reader */
1746 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1756 D(("server reader_callback"));
1757 while((eol
= memchr(ptr
, '\n', bytes
))) {
1759 ev_reader_consume(reader
, eol
- (char *)ptr
);
1760 complete
= command(c
, ptr
);
1761 bytes
-= (eol
- (char *)ptr
);
1764 /* the command had better have set a new reader callback */
1766 /* there are further bytes to read, or we are at eof; arrange for the
1767 * command's reader callback to handle them */
1768 return ev_reader_incomplete(reader
);
1769 /* nothing's going on right now */
1772 /* command completed, we can go around and handle the next one */
1776 error(0, "S%x unterminated line", c
->tag
);
1777 D(("normal reader close"));
1780 D(("close associated writer"));
1781 ev_writer_close(c
->w
);
1784 remove_connection(c
);
1789 static int listen_callback(ev_source
*ev
,
1791 const struct sockaddr
attribute((unused
)) *remote
,
1792 socklen_t
attribute((unused
)) rlen
,
1794 const struct listener
*l
= u
;
1795 struct conn
*c
= xmalloc(sizeof *c
);
1796 static unsigned tags
;
1798 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
1801 c
->next
= connections
;
1804 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
1807 error(0, "ev_writer_new for file inbound connection (fd=%d) failed",
1812 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
1815 /* Main reason for failure is the FD is too big and that will already have
1817 fatal(0, "ev_reader_new for file inbound connection (fd=%d) failed", fd
);
1820 c
->reader
= reader_callback
;
1824 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
1825 sink_printf(ev_writer_sink(c
->w
), "231 %d %s %s\n",
1827 config
->authorization_algorithm
,
1828 hex(c
->nonce
, sizeof c
->nonce
));
1832 int server_start(ev_source
*ev
, int pf
,
1833 size_t socklen
, const struct sockaddr
*sa
,
1836 struct listener
*l
= xmalloc(sizeof *l
);
1837 static const int one
= 1;
1839 D(("server_init socket %s", name
));
1840 fd
= xsocket(pf
, SOCK_STREAM
, 0);
1841 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
1842 if(bind(fd
, sa
, socklen
) < 0) {
1843 error(errno
, "error binding to %s", name
);
1851 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
1853 info("listening on %s", name
);
1857 int server_stop(ev_source
*ev
, int fd
) {
1859 return ev_listen_cancel(ev
, fd
);