2 * This file is part of DisOrder.
3 * Copyright (C) 2004-2012 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
50 /** @brief Signature for line reader callback
53 * @return 0 if incomplete, 1 if complete
55 * @p line is 0-terminated and excludes the newline. It points into the
56 * input buffer so will become invalid shortly.
58 typedef int line_reader_type(struct conn
*c
,
61 /** @brief Signature for with-body command callbacks
63 * @param body List of body lines
64 * @param nbody Number of body lines
65 * @param u As passed to fetch_body()
66 * @return 0 to suspend input, 1 if complete
68 * The body strings are allocated (so survive indefinitely) and don't include
71 typedef int body_callback_type(struct conn
*c
,
76 /** @brief One client connection */
78 /** @brief Read commands from here */
80 /** @brief Send responses to here */
82 /** @brief Underlying file descriptor */
84 /** @brief Unique identifier for connection used in log messages */
86 /** @brief Login name or NULL */
88 /** @brief Event loop */
90 /** @brief Nonce chosen for this connection */
91 unsigned char nonce
[NONCE_SIZE
];
92 /** @brief Current reader callback
94 * We change this depending on whether we're servicing the @b log command
96 ev_reader_callback
*reader
;
97 /** @brief Event log output sending to this connection */
98 struct eventlog_output
*lo
;
99 /** @brief Parent listener */
100 const struct listener
*l
;
101 /** @brief Login cookie or NULL */
103 /** @brief Connection rights */
105 /** @brief Next connection */
107 /** @brief True if pending rescan had 'wait' set */
109 /** @brief Playlist that this connection locks */
110 const char *locked_playlist
;
111 /** @brief When that playlist was locked */
113 /** @brief Line reader function */
114 line_reader_type
*line_reader
;
115 /** @brief Called when command body has been read */
116 body_callback_type
*body_callback
;
117 /** @brief Passed to @c body_callback */
119 /** @brief Accumulating body */
120 struct vector body
[1];
123 /** @brief Linked list of connections */
124 static struct conn
*connections
;
126 static int reader_callback(ev_source
*ev
,
132 static int c_playlist_set_body(struct conn
*c
,
136 static int fetch_body(struct conn
*c
,
137 body_callback_type body_callback
,
139 static int body_line(struct conn
*c
, char *line
);
140 static int command(struct conn
*c
, char *line
);
142 static const char *noyes
[] = { "no", "yes" };
144 /** @brief Remove a connection from the connection list */
145 static void remove_connection(struct conn
*c
) {
148 for(cc
= &connections
; *cc
&& *cc
!= c
; cc
= &(*cc
)->next
)
154 /** @brief Called when a connection's writer fails or is shut down
156 * If the connection still has a raeder that is cancelled.
158 static int writer_error(ev_source
attribute((unused
)) *ev
,
163 D(("server writer_error S%x %d", c
->tag
, errno_value
));
164 if(errno_value
== 0) {
166 D(("S%x writer completed", c
->tag
));
168 if(errno_value
!= EPIPE
)
169 disorder_error(errno_value
, "S%x write error on socket", c
->tag
);
171 D(("cancel reader"));
172 ev_reader_cancel(c
->r
);
175 D(("done cancel reader"));
179 remove_connection(c
);
183 /** @brief Called when a conncetion's reader fails or is shut down
185 * If connection still has a writer then it is closed.
187 static int reader_error(ev_source
attribute((unused
)) *ev
,
192 D(("server reader_error S%x %d", c
->tag
, errno_value
));
193 disorder_error(errno_value
, "S%x read error on socket", c
->tag
);
195 ev_writer_close(c
->w
);
199 remove_connection(c
);
203 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
205 disable_playing(c
->who
, c
->ev
);
206 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
207 disable_playing(c
->who
, c
->ev
);
209 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
210 return 1; /* completed */
212 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
213 return 1; /* completed */
216 static int c_enable(struct conn
*c
,
217 char attribute((unused
)) **vec
,
218 int attribute((unused
)) nvec
) {
219 enable_playing(c
->who
, c
->ev
);
220 /* Enable implicitly unpauses if there is nothing playing */
221 if(paused
&& !playing
) resume_playing(c
->who
);
222 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
223 return 1; /* completed */
226 static int c_enabled(struct conn
*c
,
227 char attribute((unused
)) **vec
,
228 int attribute((unused
)) nvec
) {
229 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
230 return 1; /* completed */
233 static int c_play(struct conn
*c
, char **vec
,
234 int attribute((unused
)) nvec
) {
236 struct queue_entry
*q
;
238 if(!trackdb_exists(vec
[0])) {
239 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
242 if(!(track
= trackdb_resolve(vec
[0]))) {
243 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
246 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
, NULL
, origin_picked
);
248 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
249 /* We make sure the track at the head of the queue is prepared, just in case
250 * we added it. We could be more subtle but prepare() will ensure we don't
251 * prepare the same track twice so there's no point. */
252 if(qhead
.next
!= &qhead
)
253 prepare(c
->ev
, qhead
.next
);
254 /* If the queue was empty but we are for some reason paused then
256 if(!playing
) resume_playing(0);
258 return 1; /* completed */
261 static int c_playafter(struct conn
*c
, char **vec
,
262 int attribute((unused
)) nvec
) {
264 struct queue_entry
*q
;
265 const char *afterme
= vec
[0];
267 for(int n
= 1; n
< nvec
; ++n
) {
268 if(!trackdb_exists(vec
[n
])) {
269 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
272 if(!(track
= trackdb_resolve(vec
[n
]))) {
273 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
276 q
= queue_add(track
, c
->who
, WHERE_AFTER
, afterme
, origin_picked
);
278 sink_printf(ev_writer_sink(c
->w
), "550 No such ID\n");
281 disorder_info("added %s as %s after %s", track
, q
->id
, afterme
);
285 sink_printf(ev_writer_sink(c
->w
), "252 OK\n");
286 /* We make sure the track at the head of the queue is prepared, just in case
287 * we added it. We could be more subtle but prepare() will ensure we don't
288 * prepare the same track twice so there's no point. */
289 if(qhead
.next
!= &qhead
) {
290 prepare(c
->ev
, qhead
.next
);
291 disorder_info("prepared %s", qhead
.next
->id
);
293 /* If the queue was empty but we are for some reason paused then
298 return 1; /* completed */
301 static int c_remove(struct conn
*c
, char **vec
,
302 int attribute((unused
)) nvec
) {
303 struct queue_entry
*q
;
305 if(!(q
= queue_find(vec
[0]))) {
306 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
309 if(!right_removable(c
->rights
, c
->who
, q
)) {
310 disorder_error(0, "%s attempted remove but lacks required rights", c
->who
);
311 sink_writes(ev_writer_sink(c
->w
),
312 "510 Not authorized to remove that track\n");
315 queue_remove(q
, c
->who
);
316 /* De-prepare the track. */
318 /* See about adding a new random track */
319 add_random_track(c
->ev
);
320 /* Prepare whatever the next head track is. */
321 if(qhead
.next
!= &qhead
)
322 prepare(c
->ev
, qhead
.next
);
324 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
325 return 1; /* completed */
328 static int c_scratch(struct conn
*c
,
332 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
333 return 1; /* completed */
335 /* TODO there is a bug here: if we specify an ID but it's not the currently
336 * playing track then you will get 550 if you weren't authorized to scratch
337 * the currently playing track. */
338 if(!right_scratchable(c
->rights
, c
->who
, playing
)) {
339 disorder_error(0, "%s attempted scratch but lacks required rights", c
->who
);
340 sink_writes(ev_writer_sink(c
->w
),
341 "510 Not authorized to scratch that track\n");
344 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
345 /* If you scratch an unpaused track then it is automatically unpaused */
347 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
348 return 1; /* completed */
351 static int c_pause(struct conn
*c
,
352 char attribute((unused
)) **vec
,
353 int attribute((unused
)) nvec
) {
355 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
356 return 1; /* completed */
359 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
360 return 1; /* completed */
362 if(pause_playing(c
->who
) < 0)
363 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
365 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
369 static int c_resume(struct conn
*c
,
370 char attribute((unused
)) **vec
,
371 int attribute((unused
)) nvec
) {
373 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
374 return 1; /* completed */
376 resume_playing(c
->who
);
377 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
381 static int c_shutdown(struct conn
*c
,
382 char attribute((unused
)) **vec
,
383 int attribute((unused
)) nvec
) {
384 disorder_info("S%x shut down by %s", c
->tag
, c
->who
);
385 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
386 ev_writer_flush(c
->w
);
390 static int c_reconfigure(struct conn
*c
,
391 char attribute((unused
)) **vec
,
392 int attribute((unused
)) nvec
) {
393 disorder_info("S%x reconfigure by %s", c
->tag
, c
->who
);
394 if(reconfigure(c
->ev
, 1))
395 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
397 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
398 return 1; /* completed */
401 static void finished_rescan(void *ru
) {
402 struct conn
*const c
= ru
;
404 sink_writes(ev_writer_sink(c
->w
), "250 rescan completed\n");
405 /* Turn this connection back on */
406 ev_reader_enable(c
->r
);
409 static void start_fresh_rescan(void *ru
) {
410 struct conn
*const c
= ru
;
412 if(trackdb_rescan_underway()) {
413 /* Some other waiter beat us to it. However in this case we're happy to
414 * piggyback; the requirement is that a new rescan be started, not that it
415 * was _our_ rescan. */
417 /* We block until the rescan completes */
418 trackdb_add_rescanned(finished_rescan
, c
);
420 /* We report that the new rescan has started */
421 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
422 /* Turn this connection back on */
423 ev_reader_enable(c
->r
);
426 /* We are the first connection to get a callback so we must start a
429 /* We want to block until the new rescan completes */
430 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
432 /* We can report back immediately */
433 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
434 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
435 /* Turn this connection back on */
436 ev_reader_enable(c
->r
);
441 static int c_rescan(struct conn
*c
,
444 int flag_wait
= 0, flag_fresh
= 0, n
;
447 for(n
= 0; n
< nvec
; ++n
) {
448 if(!strcmp(vec
[n
], "wait"))
449 flag_wait
= 1; /* wait for rescan to complete */
451 /* Currently disabled because untested (and hard to test). */
452 else if(!strcmp(vec
[n
], "fresh"))
453 flag_fresh
= 1; /* don't piggyback underway rescan */
456 sink_writes(ev_writer_sink(c
->w
), "550 unknown flag\n");
457 return 1; /* completed */
460 /* Report what was requested */
461 disorder_info("S%x rescan by %s (%s %s)", c
->tag
, c
->who
,
462 flag_wait ?
"wait" : "",
463 flag_fresh ?
"fresh" : "");
464 if(trackdb_rescan_underway()) {
466 /* We want a fresh rescan but there is already one underway. Arrange a
467 * callback when it completes and then set off a new one. */
468 c
->rescan_wait
= flag_wait
;
469 trackdb_add_rescanned(start_fresh_rescan
, c
);
473 sink_writes(ev_writer_sink(c
->w
), "250 rescan queued\n");
477 /* There's a rescan underway, and it's acceptable to piggyback on it */
479 /* We want to block until completion. */
480 trackdb_add_rescanned(finished_rescan
, c
);
483 /* We don't want to block. So we just report that things are in
485 sink_writes(ev_writer_sink(c
->w
), "250 rescan already underway\n");
490 /* No rescan is underway. fresh is therefore irrelevant. */
492 /* We want to block until completion */
493 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
496 /* We don't want to block. */
497 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
498 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
499 return 1; /* completed */
504 static int c_version(struct conn
*c
,
505 char attribute((unused
)) **vec
,
506 int attribute((unused
)) nvec
) {
507 /* VERSION had better only use the basic character set */
508 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
509 return 1; /* completed */
512 static int c_playing(struct conn
*c
,
513 char attribute((unused
)) **vec
,
514 int attribute((unused
)) nvec
) {
516 queue_fix_sofar(playing
);
517 playing
->expected
= 0;
518 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
520 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
521 return 1; /* completed */
524 static const char *connection_host(struct conn
*c
) {
527 struct sockaddr_in in
;
528 struct sockaddr_in6 in6
;
534 /* get connection data */
536 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
537 disorder_error(errno
, "S%x error calling getpeername", c
->tag
);
540 if(c
->l
->pf
!= PF_UNIX
) {
541 if((n
= getnameinfo(&u
.sa
, l
,
542 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
543 disorder_error(0, "S%x error calling getnameinfo: %s",
544 c
->tag
, gai_strerror(n
));
547 return xstrdup(host
);
552 static int c_user(struct conn
*c
,
554 int attribute((unused
)) nvec
) {
556 const char *res
, *host
, *password
;
560 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
563 /* get connection data */
564 if(!(host
= connection_host(c
))) {
565 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
569 k
= trackdb_getuserinfo(vec
[0]);
570 /* reject nonexistent users */
572 disorder_error(0, "S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
573 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
576 /* reject unconfirmed users */
577 if(kvp_get(k
, "confirmation")) {
578 disorder_error(0, "S%x unconfirmed user '%s' from %s",
579 c
->tag
, vec
[0], host
);
580 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
583 password
= kvp_get(k
, "password");
584 if(!password
) password
= "";
585 if(parse_rights(kvp_get(k
, "rights"), &rights
, 1)) {
586 disorder_error(0, "error parsing rights for %s", vec
[0]);
587 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
590 /* check whether the response is right */
591 res
= authhash(c
->nonce
, sizeof c
->nonce
, password
,
592 config
->authorization_algorithm
);
593 if(wideopen
|| c
->l
->privileged
|| (res
&& !strcmp(res
, vec
[1]))) {
596 /* currently we only bother logging remote connections */
597 if(strcmp(host
, "local"))
598 disorder_info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
600 c
->rights
|= RIGHT__LOCAL
;
601 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
604 /* oops, response was wrong */
605 disorder_info("S%x authentication failure for %s from %s",
606 c
->tag
, vec
[0], host
);
607 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
611 static int c_recent(struct conn
*c
,
612 char attribute((unused
)) **vec
,
613 int attribute((unused
)) nvec
) {
614 const struct queue_entry
*q
;
616 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
617 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
618 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
619 sink_writes(ev_writer_sink(c
->w
), ".\n");
620 return 1; /* completed */
623 static int c_queue(struct conn
*c
,
624 char attribute((unused
)) **vec
,
625 int attribute((unused
)) nvec
) {
626 struct queue_entry
*q
;
631 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
632 if(playing_is_enabled() && !paused
) {
634 queue_fix_sofar(playing
);
635 if((l
= trackdb_get(playing
->track
, "_length"))
636 && (length
= atol(l
))) {
638 when
+= length
- playing
->sofar
;
641 /* Nothing is playing but playing is enabled, so whatever is
642 * first in the queue can be expected to start immediately. */
645 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
646 /* fill in estimated start time */
648 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
649 /* update for next track */
651 if((l
= trackdb_get(q
->track
, "_length"))
652 && (length
= atol(l
)))
658 sink_writes(ev_writer_sink(c
->w
), ".\n");
659 return 1; /* completed */
662 static int output_list(struct conn
*c
, char **vec
) {
664 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
665 sink_writes(ev_writer_sink(c
->w
), ".\n");
669 static int files_dirs(struct conn
*c
,
672 enum trackdb_listable what
) {
673 const char *dir
, *re
, *errstr
;
679 case 0: dir
= 0; re
= 0; break;
680 case 1: dir
= vec
[0]; re
= 0; break;
681 case 2: dir
= vec
[0]; re
= vec
[1]; break;
684 /* A bit of a bodge to make sure the args don't trample on cache keys */
685 if(dir
&& strchr(dir
, '\n')) {
686 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
689 if(re
&& strchr(re
, '\n')) {
690 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
693 /* We bother eliminating "" because the web interface is relatively
694 * likely to send it */
696 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
697 fvec
= (char **)cache_get(&cache_files_type
, key
);
699 /* Got a cache hit, don't store the answer in the cache */
702 rec
= 0; /* quieten compiler */
704 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
706 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
707 &errstr
, &erroffset
, 0))) {
708 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
712 /* It only counts as a miss if the regexp was valid. */
713 ++cache_files_misses
;
716 /* No regexp, don't bother caching the result */
722 /* No cache hit (either because a miss, or because we did not look) so do
725 fvec
= trackdb_list(dir
, 0, what
, rec
);
727 fvec
= trackdb_list(0, 0, what
, rec
);
730 /* Put the answer in the cache */
731 cache_put(&cache_files_type
, key
, fvec
);
732 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
733 return output_list(c
, fvec
);
736 static int c_files(struct conn
*c
,
739 return files_dirs(c
, vec
, nvec
, trackdb_files
);
742 static int c_dirs(struct conn
*c
,
745 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
748 static int c_allfiles(struct conn
*c
,
751 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
754 static int c_get(struct conn
*c
,
756 int attribute((unused
)) nvec
) {
757 const char *v
, *track
;
759 if(!(track
= trackdb_resolve(vec
[0]))) {
760 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
763 if(vec
[1][0] != '_' && (v
= trackdb_get(track
, vec
[1])))
764 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
766 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
770 static int c_length(struct conn
*c
,
772 int attribute((unused
)) nvec
) {
773 const char *track
, *v
;
775 if(!(track
= trackdb_resolve(vec
[0]))) {
776 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
779 if((v
= trackdb_get(track
, "_length")))
780 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
782 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
786 static int c_set(struct conn
*c
,
788 int attribute((unused
)) nvec
) {
791 if(!(track
= trackdb_resolve(vec
[0]))) {
792 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
795 if(vec
[1][0] != '_' && !trackdb_set(track
, vec
[1], vec
[2]))
796 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
798 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
802 static int c_prefs(struct conn
*c
,
804 int attribute((unused
)) nvec
) {
808 if(!(track
= trackdb_resolve(vec
[0]))) {
809 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
812 k
= trackdb_get_all(track
);
813 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
814 for(; k
; k
= k
->next
)
815 if(k
->name
[0] != '_') /* omit internal values */
816 sink_printf(ev_writer_sink(c
->w
),
817 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
818 sink_writes(ev_writer_sink(c
->w
), ".\n");
822 static int c_exists(struct conn
*c
,
824 int attribute((unused
)) nvec
) {
825 /* trackdb_exists() does its own alias checking */
826 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
830 static void search_parse_error(const char *msg
, void *u
) {
831 *(const char **)u
= msg
;
834 static int c_search(struct conn
*c
,
836 int attribute((unused
)) nvec
) {
837 char **terms
, **results
;
838 int nterms
, nresults
, n
;
839 const char *e
= "unknown error";
841 /* This is a bit of a bodge. Initially it's there to make the eclient
842 * interface a bit more convenient to add searching to, but it has the more
843 * compelling advantage that if everything uses it, then interpretation of
844 * user-supplied search strings will be the same everywhere. */
845 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
846 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
848 results
= trackdb_search(terms
, nterms
, &nresults
);
849 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
850 for(n
= 0; n
< nresults
; ++n
)
851 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
852 sink_writes(ev_writer_sink(c
->w
), ".\n");
857 static int c_random_enable(struct conn
*c
,
858 char attribute((unused
)) **vec
,
859 int attribute((unused
)) nvec
) {
860 enable_random(c
->who
, c
->ev
);
861 /* Enable implicitly unpauses if there is nothing playing */
862 if(paused
&& !playing
) resume_playing(c
->who
);
863 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
864 return 1; /* completed */
867 static int c_random_disable(struct conn
*c
,
868 char attribute((unused
)) **vec
,
869 int attribute((unused
)) nvec
) {
870 disable_random(c
->who
, c
->ev
);
871 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
872 return 1; /* completed */
875 static int c_random_enabled(struct conn
*c
,
876 char attribute((unused
)) **vec
,
877 int attribute((unused
)) nvec
) {
878 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
879 return 1; /* completed */
882 static void got_stats(char *stats
, void *u
) {
883 struct conn
*const c
= u
;
885 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
886 /* Now we can start processing commands again */
887 ev_reader_enable(c
->r
);
890 static int c_stats(struct conn
*c
,
891 char attribute((unused
)) **vec
,
892 int attribute((unused
)) nvec
) {
893 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
894 return 0; /* not yet complete */
897 static int c_volume(struct conn
*c
,
909 l
= r
= atoi(vec
[0]);
920 rights
= set ? RIGHT_VOLUME
: RIGHT_READ
;
921 if(!(c
->rights
& rights
)) {
922 disorder_error(0, "%s attempted to set volume but lacks required rights",
924 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
927 if(!api
|| !api
->set_volume
) {
928 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
931 (set ? api
->set_volume
: api
->get_volume
)(&l
, &r
);
932 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
933 if(l
!= volume_left
|| r
!= volume_right
) {
936 snprintf(lb
, sizeof lb
, "%d", l
);
937 snprintf(rb
, sizeof rb
, "%d", r
);
938 eventlog("volume", lb
, rb
, (char *)0);
943 /** @brief Called when data arrives on a log connection
945 * We just discard all such data. The client may occasionally send data as a
948 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
950 void attribute((unused
)) *ptr
,
952 int attribute((unused
)) eof
,
953 void attribute((unused
)) *u
) {
956 ev_reader_consume(reader
, bytes
);
958 /* Oops, that's all for now */
959 D(("logging reader eof"));
962 ev_writer_close(c
->w
);
966 remove_connection(c
);
971 static void logclient(const char *msg
, void *user
) {
972 struct conn
*c
= user
;
975 /* This connection has gone up in smoke for some reason */
976 eventlog_remove(c
->lo
);
980 /* user_* messages are restricted */
981 if(!strncmp(msg
, "user_", 5)) {
982 /* They are only sent to admin users */
983 if(!(c
->rights
& RIGHT_ADMIN
))
985 /* They are not sent over TCP connections unless remote user-management is
987 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
))
990 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
991 (uintmax_t)xtime(0), msg
);
994 static int c_log(struct conn
*c
,
995 char attribute((unused
)) **vec
,
996 int attribute((unused
)) nvec
) {
999 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
1000 /* pump out initial state */
1002 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
1004 playing_is_enabled() ?
"enable_play" : "disable_play");
1005 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
1007 random_is_enabled() ?
"enable_random" : "disable_random");
1008 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
1010 paused ?
"pause" : "resume");
1012 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
1014 /* Initial volume */
1015 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
1016 (uintmax_t)now
, volume_left
, volume_right
);
1017 c
->lo
= xmalloc(sizeof *c
->lo
);
1018 c
->lo
->fn
= logclient
;
1020 eventlog_add(c
->lo
);
1021 c
->reader
= logging_reader_callback
;
1025 /** @brief Test whether a move is allowed
1026 * @param c Connection
1027 * @param qs List of IDs on queue
1028 * @param nqs Number of IDs
1029 * @return 0 if move is prohibited, non-0 if it is allowed
1031 static int has_move_rights(struct conn
*c
, struct queue_entry
**qs
, int nqs
) {
1032 for(; nqs
> 0; ++qs
, --nqs
) {
1033 struct queue_entry
*const q
= *qs
;
1035 if(!right_movable(c
->rights
, c
->who
, q
))
1041 static int c_move(struct conn
*c
,
1043 int attribute((unused
)) nvec
) {
1044 struct queue_entry
*q
;
1047 if(!(q
= queue_find(vec
[0]))) {
1048 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1051 if(!has_move_rights(c
, &q
, 1)) {
1052 disorder_error(0, "%s attempted move but lacks required rights", c
->who
);
1053 sink_writes(ev_writer_sink(c
->w
),
1054 "510 Not authorized to move that track\n");
1057 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
1058 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
1059 /* If we've moved to the head of the queue then prepare the track. */
1065 static int c_moveafter(struct conn
*c
,
1067 int attribute((unused
)) nvec
) {
1068 struct queue_entry
*q
, **qs
;
1072 if(!(q
= queue_find(vec
[0]))) {
1073 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1080 qs
= xcalloc(nvec
, sizeof *qs
);
1081 for(n
= 0; n
< nvec
; ++n
)
1082 if(!(qs
[n
] = queue_find(vec
[n
]))) {
1083 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1086 if(!has_move_rights(c
, qs
, nvec
)) {
1087 disorder_error(0, "%s attempted moveafter but lacks required rights",
1089 sink_writes(ev_writer_sink(c
->w
),
1090 "510 Not authorized to move those tracks\n");
1093 queue_moveafter(q
, nvec
, qs
, c
->who
);
1094 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
1095 /* If we've moved to the head of the queue then prepare the track. */
1101 static int c_part(struct conn
*c
,
1103 int attribute((unused
)) nvec
) {
1106 if(!(track
= trackdb_resolve(vec
[0]))) {
1107 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1110 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
1111 quoteutf8(trackdb_getpart(track
, vec
[1], vec
[2])));
1115 static int c_resolve(struct conn
*c
,
1117 int attribute((unused
)) nvec
) {
1120 if(!(track
= trackdb_resolve(vec
[0]))) {
1121 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1124 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(track
));
1128 static int list_response(struct conn
*c
,
1131 sink_printf(ev_writer_sink(c
->w
), "253 %s\n", reply
);
1133 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1134 **list
== '.' ?
"." : "", *list
);
1137 sink_writes(ev_writer_sink(c
->w
), ".\n");
1138 return 1; /* completed */
1141 static int c_tags(struct conn
*c
,
1142 char attribute((unused
)) **vec
,
1143 int attribute((unused
)) nvec
) {
1144 return list_response(c
, "Tag list follows", trackdb_alltags());
1147 static int c_set_global(struct conn
*c
,
1149 int attribute((unused
)) nvec
) {
1150 if(vec
[0][0] == '_') {
1151 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
1154 /* We special-case the 'magic' preferences here. */
1155 if(!strcmp(vec
[0], "playing")) {
1156 (flag_enabled(vec
[1]) ? enable_playing
: disable_playing
)(c
->who
, c
->ev
);
1157 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1158 } else if(!strcmp(vec
[0], "random-play")) {
1159 (flag_enabled(vec
[1]) ? enable_random
: disable_random
)(c
->who
, c
->ev
);
1160 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1162 if(!trackdb_set_global(vec
[0], vec
[1], c
->who
))
1163 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1165 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
1170 static int c_get_global(struct conn
*c
,
1172 int attribute((unused
)) nvec
) {
1173 const char *s
= trackdb_get_global(vec
[0]);
1176 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(s
));
1178 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
1182 static int c_nop(struct conn
*c
,
1183 char attribute((unused
)) **vec
,
1184 int attribute((unused
)) nvec
) {
1185 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
1189 static int c_new(struct conn
*c
,
1199 if(max
<= 0 || max
> config
->new_max
)
1200 max
= config
->new_max
;
1201 tracks
= trackdb_new(0, max
);
1202 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
1204 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1205 **tracks
== '.' ?
"." : "", *tracks
);
1208 sink_writes(ev_writer_sink(c
->w
), ".\n");
1209 return 1; /* completed */
1213 static int c_rtp_address(struct conn
*c
,
1214 char attribute((unused
)) **vec
,
1215 int attribute((unused
)) nvec
) {
1216 if(api
== &uaudio_rtp
) {
1219 netaddress_format(&config
->broadcast
, NULL
, &addr
);
1220 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
1222 quoteutf8(addr
[2]));
1224 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
1228 static int c_cookie(struct conn
*c
,
1230 int attribute((unused
)) nvec
) {
1235 /* Can't log in twice on the same connection */
1237 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
1240 /* Get some kind of peer identifcation */
1241 if(!(host
= connection_host(c
))) {
1242 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1245 /* Check the cookie */
1246 user
= verify_cookie(vec
[0], &rights
);
1248 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1255 if(strcmp(host
, "local"))
1256 disorder_info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1258 c
->rights
|= RIGHT__LOCAL
;
1259 /* Response contains username so client knows who they are acting as */
1260 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1264 static int c_make_cookie(struct conn
*c
,
1265 char attribute((unused
)) **vec
,
1266 int attribute((unused
)) nvec
) {
1267 const char *cookie
= make_cookie(c
->who
);
1270 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cookie
));
1272 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1276 static int c_revoke(struct conn
*c
,
1277 char attribute((unused
)) **vec
,
1278 int attribute((unused
)) nvec
) {
1280 revoke_cookie(c
->cookie
);
1281 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1283 sink_writes(ev_writer_sink(c
->w
), "510 Did not log in with cookie\n");
1287 static int c_adduser(struct conn
*c
,
1292 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1293 disorder_error(0, "S%x: remote adduser", c
->tag
);
1294 sink_writes(ev_writer_sink(c
->w
), "510 Remote user management is disabled\n");
1299 if(parse_rights(vec
[2], 0, 1)) {
1300 sink_writes(ev_writer_sink(c
->w
), "550 Invalid rights list\n");
1304 rights
= config
->default_rights
;
1305 if(trackdb_adduser(vec
[0], vec
[1], rights
,
1306 0/*email*/, 0/*confirmation*/))
1307 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1309 sink_writes(ev_writer_sink(c
->w
), "250 User created\n");
1313 static int c_deluser(struct conn
*c
,
1315 int attribute((unused
)) nvec
) {
1318 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1319 disorder_error(0, "S%x: remote deluser", c
->tag
);
1320 sink_writes(ev_writer_sink(c
->w
), "510 Remote user management is disabled\n");
1323 if(trackdb_deluser(vec
[0])) {
1324 sink_writes(ev_writer_sink(c
->w
), "550 Cannot delete user\n");
1327 /* Zap connections belonging to deleted user */
1328 for(d
= connections
; d
; d
= d
->next
)
1329 if(!strcmp(d
->who
, vec
[0]))
1331 sink_writes(ev_writer_sink(c
->w
), "250 User deleted\n");
1335 static int c_edituser(struct conn
*c
,
1337 int attribute((unused
)) nvec
) {
1340 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1341 disorder_error(0, "S%x: remote edituser", c
->tag
);
1342 sink_writes(ev_writer_sink(c
->w
), "510 Remote user management is disabled\n");
1345 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1346 * address and password. */
1347 if((c
->rights
& RIGHT_ADMIN
)
1348 || (!strcmp(c
->who
, vec
[0])
1349 && (!strcmp(vec
[1], "email")
1350 || !strcmp(vec
[1], "password")))) {
1351 if(trackdb_edituserinfo(vec
[0], vec
[1], vec
[2])) {
1352 sink_writes(ev_writer_sink(c
->w
), "550 Failed to change setting\n");
1355 if(!strcmp(vec
[1], "password")) {
1356 /* Zap all connections for this user after a password change */
1357 for(d
= connections
; d
; d
= d
->next
)
1358 if(!strcmp(d
->who
, vec
[0]))
1360 } else if(!strcmp(vec
[1], "rights")) {
1361 /* Update rights for this user */
1364 if(!parse_rights(vec
[2], &r
, 1)) {
1365 const char *new_rights
= rights_string(r
);
1366 for(d
= connections
; d
; d
= d
->next
) {
1367 if(!strcmp(d
->who
, vec
[0])) {
1370 /* Notify any log connections */
1372 sink_printf(ev_writer_sink(d
->w
),
1373 "%"PRIxMAX
" rights_changed %s\n",
1374 (uintmax_t)xtime(0),
1375 quoteutf8(new_rights
));
1380 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1382 disorder_error(0, "%s attempted edituser but lacks required rights",
1384 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1389 static int c_userinfo(struct conn
*c
,
1390 char attribute((unused
)) **vec
,
1391 int attribute((unused
)) nvec
) {
1395 /* We allow remote querying of rights so that clients can figure out what
1396 * they're allowed to do */
1397 if(!config
->remote_userman
1398 && !(c
->rights
& RIGHT__LOCAL
)
1399 && strcmp(vec
[1], "rights")) {
1400 disorder_error(0, "S%x: remote userinfo %s %s", c
->tag
, vec
[0], vec
[1]);
1401 sink_writes(ev_writer_sink(c
->w
), "510 Remote user management is disabled\n");
1404 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
1405 * address and rights list. */
1406 if((c
->rights
& RIGHT_ADMIN
)
1407 || (!strcmp(c
->who
, vec
[0])
1408 && (!strcmp(vec
[1], "email")
1409 || !strcmp(vec
[1], "rights")))) {
1410 if((k
= trackdb_getuserinfo(vec
[0])))
1411 if((value
= kvp_get(k
, vec
[1])))
1412 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(value
));
1414 sink_writes(ev_writer_sink(c
->w
), "555 Not set\n");
1416 sink_writes(ev_writer_sink(c
->w
), "550 No such user\n");
1418 disorder_error(0, "%s attempted userinfo but lacks required rights",
1420 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1425 static int c_users(struct conn
*c
,
1426 char attribute((unused
)) **vec
,
1427 int attribute((unused
)) nvec
) {
1428 return list_response(c
, "User list follows", trackdb_listusers());
1431 static int c_register(struct conn
*c
,
1433 int attribute((unused
)) nvec
) {
1435 uint32_t nonce
[CONFIRM_SIZE
];
1436 char nonce_str
[(32 * CONFIRM_SIZE
) / 5 + 1];
1438 /* The confirmation string is username/base62(nonce). The confirmation
1439 * process will pick the username back out to identify them but the _whole_
1440 * string is used as the confirmation string. Base 62 means we used only
1441 * letters and digits, minimizing the chance of the URL being mispasted. */
1442 gcry_randomize(nonce
, sizeof nonce
, GCRY_STRONG_RANDOM
);
1443 if(basen(nonce
, CONFIRM_SIZE
, nonce_str
, sizeof nonce_str
, 62)) {
1444 disorder_error(0, "buffer too small encoding confirmation string");
1445 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1447 byte_xasprintf(&cs
, "%s/%s", vec
[0], nonce_str
);
1448 if(trackdb_adduser(vec
[0], vec
[1], config
->default_rights
, vec
[2], cs
))
1449 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1451 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cs
));
1455 static int c_confirm(struct conn
*c
,
1457 int attribute((unused
)) nvec
) {
1462 /* Get some kind of peer identifcation */
1463 if(!(host
= connection_host(c
))) {
1464 sink_writes(ev_writer_sink(c
->w
), "530 Authentication failure\n");
1467 /* Picking the LAST / means we don't (here) rule out slashes in usernames. */
1468 if(!(sep
= strrchr(vec
[0], '/'))) {
1469 sink_writes(ev_writer_sink(c
->w
), "550 Malformed confirmation string\n");
1472 user
= xstrndup(vec
[0], sep
- vec
[0]);
1473 if(trackdb_confirm(user
, vec
[0], &rights
))
1474 sink_writes(ev_writer_sink(c
->w
), "510 Incorrect confirmation string\n");
1479 if(strcmp(host
, "local"))
1480 disorder_info("S%x %s confirmed from %s", c
->tag
, user
, host
);
1482 c
->rights
|= RIGHT__LOCAL
;
1483 /* Response contains username so client knows who they are acting as */
1484 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1489 static int sent_reminder(ev_source
attribute((unused
)) *ev
,
1490 pid_t
attribute((unused
)) pid
,
1492 const struct rusage
attribute((unused
)) *rusage
,
1494 struct conn
*const c
= u
;
1496 /* Tell the client what went down */
1498 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1500 disorder_error(0, "reminder subprocess %s", wstat(status
));
1501 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1503 /* Re-enable this connection */
1504 ev_reader_enable(c
->r
);
1508 static int c_reminder(struct conn
*c
,
1510 int attribute((unused
)) nvec
) {
1512 const char *password
, *email
, *text
, *encoding
, *charset
, *content_type
;
1517 static hash
*last_reminder
;
1519 if(!config
->mail_sender
) {
1520 disorder_error(0, "cannot send password reminders because mail_sender not set");
1521 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1524 if(!(k
= trackdb_getuserinfo(vec
[0]))) {
1525 disorder_error(0, "reminder for user '%s' who does not exist", vec
[0]);
1526 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1529 if(!(email
= kvp_get(k
, "email"))
1530 || !email_valid(email
)) {
1531 disorder_error(0, "user '%s' has no valid email address", vec
[0]);
1532 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1535 if(!(password
= kvp_get(k
, "password"))
1537 disorder_error(0, "user '%s' has no password", vec
[0]);
1538 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1541 /* Rate-limit reminders. This hash is bounded in size by the number of
1542 * users. If this is actually a problem for anyone then we can periodically
1545 last_reminder
= hash_new(sizeof (time_t));
1546 last
= hash_find(last_reminder
, vec
[0]);
1548 if(last
&& now
< *last
+ config
->reminder_interval
) {
1549 disorder_error(0, "sent a password reminder to '%s' too recently", vec
[0]);
1550 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1553 /* Send the reminder */
1554 /* TODO this should be templatized and to some extent merged with
1555 * the code in act_register() */
1556 byte_xasprintf((char **)&text
,
1557 "Someone requested that you be sent a reminder of your DisOrder password.\n"
1558 "Your password is:\n"
1561 if(!(text
= mime_encode_text(text
, &charset
, &encoding
)))
1562 disorder_fatal(0, "cannot encode email");
1563 byte_xasprintf((char **)&content_type
, "text/plain;charset=%s",
1564 quote822(charset
, 0));
1565 pid
= sendmail_subprocess("", config
->mail_sender
, email
,
1566 "DisOrder password reminder",
1567 encoding
, content_type
, text
);
1569 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1572 hash_add(last_reminder
, vec
[0], &now
, HASH_INSERT_OR_REPLACE
);
1573 disorder_info("sending a passsword reminder to user '%s'", vec
[0]);
1574 /* We can only continue when the subprocess finishes */
1575 ev_child(c
->ev
, pid
, 0, sent_reminder
, c
);
1579 static int c_schedule_list(struct conn
*c
,
1580 char attribute((unused
)) **vec
,
1581 int attribute((unused
)) nvec
) {
1582 char **ids
= schedule_list(0);
1583 sink_writes(ev_writer_sink(c
->w
), "253 ID list follows\n");
1585 sink_printf(ev_writer_sink(c
->w
), "%s\n", *ids
++);
1586 sink_writes(ev_writer_sink(c
->w
), ".\n");
1587 return 1; /* completed */
1590 static int c_schedule_get(struct conn
*c
,
1592 int attribute((unused
)) nvec
) {
1593 struct kvp
*actiondata
= schedule_get(vec
[0]), *k
;
1596 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1597 return 1; /* completed */
1599 /* Scheduled events are public information. Anyone with RIGHT_READ can see
1601 sink_writes(ev_writer_sink(c
->w
), "253 Event information follows\n");
1602 for(k
= actiondata
; k
; k
= k
->next
)
1603 sink_printf(ev_writer_sink(c
->w
), " %s %s\n",
1604 quoteutf8(k
->name
), quoteutf8(k
->value
));
1605 sink_writes(ev_writer_sink(c
->w
), ".\n");
1606 return 1; /* completed */
1609 static int c_schedule_del(struct conn
*c
,
1611 int attribute((unused
)) nvec
) {
1612 struct kvp
*actiondata
= schedule_get(vec
[0]);
1615 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1616 return 1; /* completed */
1618 /* If you have admin rights you can delete anything. If you don't then you
1619 * can only delete your own scheduled events. */
1620 if(!(c
->rights
& RIGHT_ADMIN
)) {
1621 const char *who
= kvp_get(actiondata
, "who");
1623 if(!who
|| !c
->who
|| strcmp(who
, c
->who
)) {
1624 sink_writes(ev_writer_sink(c
->w
), "510 Not authorized\n");
1625 return 1; /* completed */
1628 if(schedule_del(vec
[0]))
1629 sink_writes(ev_writer_sink(c
->w
), "550 Could not delete scheduled event\n");
1631 sink_writes(ev_writer_sink(c
->w
), "250 Deleted\n");
1632 return 1; /* completed */
1635 static int c_schedule_add(struct conn
*c
,
1638 struct kvp
*actiondata
= 0;
1641 /* Standard fields */
1642 kvp_set(&actiondata
, "who", c
->who
);
1643 kvp_set(&actiondata
, "when", vec
[0]);
1644 kvp_set(&actiondata
, "priority", vec
[1]);
1645 kvp_set(&actiondata
, "action", vec
[2]);
1646 /* Action-dependent fields */
1647 if(!strcmp(vec
[2], "play")) {
1649 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1652 if(!trackdb_exists(vec
[3])) {
1653 sink_writes(ev_writer_sink(c
->w
), "550 Track is not in database\n");
1656 kvp_set(&actiondata
, "track", vec
[3]);
1657 } else if(!strcmp(vec
[2], "set-global")) {
1658 if(nvec
< 4 || nvec
> 5) {
1659 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1662 kvp_set(&actiondata
, "key", vec
[3]);
1664 kvp_set(&actiondata
, "value", vec
[4]);
1666 sink_writes(ev_writer_sink(c
->w
), "550 Unknown action\n");
1669 /* schedule_add() checks user rights */
1670 id
= schedule_add(c
->ev
, actiondata
);
1672 sink_writes(ev_writer_sink(c
->w
), "550 Cannot add scheduled event\n");
1674 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", id
);
1678 static int c_adopt(struct conn
*c
,
1680 int attribute((unused
)) nvec
) {
1681 struct queue_entry
*q
;
1684 sink_writes(ev_writer_sink(c
->w
), "550 no identity\n");
1687 if(!(q
= queue_find(vec
[0]))) {
1688 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1691 if(q
->origin
!= origin_random
) {
1692 sink_writes(ev_writer_sink(c
->w
), "550 not a random track\n");
1695 q
->origin
= origin_adopted
;
1696 q
->submitter
= xstrdup(c
->who
);
1697 eventlog("adopted", q
->id
, q
->submitter
, (char *)0);
1699 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1703 static int playlist_response(struct conn
*c
,
1707 assert(!"cannot cope with success");
1709 sink_writes(ev_writer_sink(c
->w
), "510 Access denied\n");
1712 sink_writes(ev_writer_sink(c
->w
), "550 Invalid playlist name\n");
1715 sink_writes(ev_writer_sink(c
->w
), "555 No such playlist\n");
1718 sink_writes(ev_writer_sink(c
->w
), "550 Error accessing playlist\n");
1724 static int c_playlist_get(struct conn
*c
,
1726 int attribute((unused
)) nvec
) {
1730 if(!(err
= trackdb_playlist_get(vec
[0], c
->who
, &tracks
, 0, 0)))
1731 return list_response(c
, "Playlist contents follows", tracks
);
1733 return playlist_response(c
, err
);
1736 static int c_playlist_set(struct conn
*c
,
1738 int attribute((unused
)) nvec
) {
1739 return fetch_body(c
, c_playlist_set_body
, vec
[0]);
1742 static int c_playlist_set_body(struct conn
*c
,
1746 const char *playlist
= u
;
1749 if(!c
->locked_playlist
1750 || strcmp(playlist
, c
->locked_playlist
)) {
1751 sink_writes(ev_writer_sink(c
->w
), "550 Playlist is not locked\n");
1754 if(!(err
= trackdb_playlist_set(playlist
, c
->who
,
1756 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1759 return playlist_response(c
, err
);
1762 static int c_playlist_get_share(struct conn
*c
,
1764 int attribute((unused
)) nvec
) {
1768 if(!(err
= trackdb_playlist_get(vec
[0], c
->who
, 0, 0, &share
))) {
1769 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(share
));
1772 return playlist_response(c
, err
);
1775 static int c_playlist_set_share(struct conn
*c
,
1777 int attribute((unused
)) nvec
) {
1780 if(!(err
= trackdb_playlist_set(vec
[0], c
->who
, 0, 0, vec
[1]))) {
1781 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1784 return playlist_response(c
, err
);
1787 static int c_playlists(struct conn
*c
,
1788 char attribute((unused
)) **vec
,
1789 int attribute((unused
)) nvec
) {
1792 trackdb_playlist_list(c
->who
, &p
, 0);
1793 return list_response(c
, "List of playlists follows", p
);
1796 static int c_playlist_delete(struct conn
*c
,
1798 int attribute((unused
)) nvec
) {
1801 if(!(err
= trackdb_playlist_delete(vec
[0], c
->who
))) {
1802 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1805 return playlist_response(c
, err
);
1808 static int c_playlist_lock(struct conn
*c
,
1810 int attribute((unused
)) nvec
) {
1814 /* Check we're allowed to modify this playlist */
1815 if((err
= trackdb_playlist_set(vec
[0], c
->who
, 0, 0, 0)))
1816 return playlist_response(c
, err
);
1817 /* If we hold a lock don't allow a new one */
1818 if(c
->locked_playlist
) {
1819 sink_writes(ev_writer_sink(c
->w
), "550 Already holding a lock\n");
1822 /* See if some other connection locks the same playlist */
1823 for(cc
= connections
; cc
; cc
= cc
->next
)
1824 if(cc
->locked_playlist
&& !strcmp(cc
->locked_playlist
, vec
[0]))
1827 /* TODO: implement config->playlist_lock_timeout */
1828 sink_writes(ev_writer_sink(c
->w
), "550 Already locked\n");
1831 c
->locked_playlist
= xstrdup(vec
[0]);
1832 time(&c
->locked_when
);
1833 sink_writes(ev_writer_sink(c
->w
), "250 Acquired lock\n");
1837 static int c_playlist_unlock(struct conn
*c
,
1838 char attribute((unused
)) **vec
,
1839 int attribute((unused
)) nvec
) {
1840 if(!c
->locked_playlist
) {
1841 sink_writes(ev_writer_sink(c
->w
), "550 Not holding a lock\n");
1844 c
->locked_playlist
= 0;
1845 sink_writes(ev_writer_sink(c
->w
), "250 Released lock\n");
1849 /** @brief Server's definition of a command */
1850 static const struct server_command
{
1851 /** @brief Command name */
1854 /** @brief Minimum number of arguments */
1857 /** @brief Maximum number of arguments */
1860 /** @brief Function to process command */
1861 int (*fn
)(struct conn
*, char **, int);
1863 /** @brief Rights required to execute command
1865 * 0 means that the command can be issued without logging in. If multiple
1866 * bits are listed here any of those rights will do.
1870 { "adduser", 2, 3, c_adduser
, RIGHT_ADMIN
},
1871 { "adopt", 1, 1, c_adopt
, RIGHT_PLAY
},
1872 { "allfiles", 0, 2, c_allfiles
, RIGHT_READ
},
1873 { "confirm", 1, 1, c_confirm
, 0 },
1874 { "cookie", 1, 1, c_cookie
, 0 },
1875 { "deluser", 1, 1, c_deluser
, RIGHT_ADMIN
},
1876 { "dirs", 0, 2, c_dirs
, RIGHT_READ
},
1877 { "disable", 0, 1, c_disable
, RIGHT_GLOBAL_PREFS
},
1878 { "edituser", 3, 3, c_edituser
, RIGHT_ADMIN
|RIGHT_USERINFO
},
1879 { "enable", 0, 0, c_enable
, RIGHT_GLOBAL_PREFS
},
1880 { "enabled", 0, 0, c_enabled
, RIGHT_READ
},
1881 { "exists", 1, 1, c_exists
, RIGHT_READ
},
1882 { "files", 0, 2, c_files
, RIGHT_READ
},
1883 { "get", 2, 2, c_get
, RIGHT_READ
},
1884 { "get-global", 1, 1, c_get_global
, RIGHT_READ
},
1885 { "length", 1, 1, c_length
, RIGHT_READ
},
1886 { "log", 0, 0, c_log
, RIGHT_READ
},
1887 { "make-cookie", 0, 0, c_make_cookie
, RIGHT_READ
},
1888 { "move", 2, 2, c_move
, RIGHT_MOVE__MASK
},
1889 { "moveafter", 1, INT_MAX
, c_moveafter
, RIGHT_MOVE__MASK
},
1890 { "new", 0, 1, c_new
, RIGHT_READ
},
1891 { "nop", 0, 0, c_nop
, 0 },
1892 { "part", 3, 3, c_part
, RIGHT_READ
},
1893 { "pause", 0, 0, c_pause
, RIGHT_PAUSE
},
1894 { "play", 1, 1, c_play
, RIGHT_PLAY
},
1895 { "playafter", 2, INT_MAX
, c_playafter
, RIGHT_PLAY
},
1896 { "playing", 0, 0, c_playing
, RIGHT_READ
},
1897 { "playlist-delete", 1, 1, c_playlist_delete
, RIGHT_PLAY
},
1898 { "playlist-get", 1, 1, c_playlist_get
, RIGHT_READ
},
1899 { "playlist-get-share", 1, 1, c_playlist_get_share
, RIGHT_READ
},
1900 { "playlist-lock", 1, 1, c_playlist_lock
, RIGHT_PLAY
},
1901 { "playlist-set", 1, 1, c_playlist_set
, RIGHT_PLAY
},
1902 { "playlist-set-share", 2, 2, c_playlist_set_share
, RIGHT_PLAY
},
1903 { "playlist-unlock", 0, 0, c_playlist_unlock
, RIGHT_PLAY
},
1904 { "playlists", 0, 0, c_playlists
, RIGHT_READ
},
1905 { "prefs", 1, 1, c_prefs
, RIGHT_READ
},
1906 { "queue", 0, 0, c_queue
, RIGHT_READ
},
1907 { "random-disable", 0, 0, c_random_disable
, RIGHT_GLOBAL_PREFS
},
1908 { "random-enable", 0, 0, c_random_enable
, RIGHT_GLOBAL_PREFS
},
1909 { "random-enabled", 0, 0, c_random_enabled
, RIGHT_READ
},
1910 { "recent", 0, 0, c_recent
, RIGHT_READ
},
1911 { "reconfigure", 0, 0, c_reconfigure
, RIGHT_ADMIN
},
1912 { "register", 3, 3, c_register
, RIGHT_REGISTER
},
1913 { "reminder", 1, 1, c_reminder
, RIGHT__LOCAL
},
1914 { "remove", 1, 1, c_remove
, RIGHT_REMOVE__MASK
},
1915 { "rescan", 0, INT_MAX
, c_rescan
, RIGHT_RESCAN
},
1916 { "resolve", 1, 1, c_resolve
, RIGHT_READ
},
1917 { "resume", 0, 0, c_resume
, RIGHT_PAUSE
},
1918 { "revoke", 0, 0, c_revoke
, RIGHT_READ
},
1919 { "rtp-address", 0, 0, c_rtp_address
, 0 },
1920 { "schedule-add", 3, INT_MAX
, c_schedule_add
, RIGHT_READ
},
1921 { "schedule-del", 1, 1, c_schedule_del
, RIGHT_READ
},
1922 { "schedule-get", 1, 1, c_schedule_get
, RIGHT_READ
},
1923 { "schedule-list", 0, 0, c_schedule_list
, RIGHT_READ
},
1924 { "scratch", 0, 1, c_scratch
, RIGHT_SCRATCH__MASK
},
1925 { "search", 1, 1, c_search
, RIGHT_READ
},
1926 { "set", 3, 3, c_set
, RIGHT_PREFS
, },
1927 { "set-global", 2, 2, c_set_global
, RIGHT_GLOBAL_PREFS
},
1928 { "shutdown", 0, 0, c_shutdown
, RIGHT_ADMIN
},
1929 { "stats", 0, 0, c_stats
, RIGHT_READ
},
1930 { "tags", 0, 0, c_tags
, RIGHT_READ
},
1931 { "unset", 2, 2, c_set
, RIGHT_PREFS
},
1932 { "unset-global", 1, 1, c_set_global
, RIGHT_GLOBAL_PREFS
},
1933 { "user", 2, 2, c_user
, 0 },
1934 { "userinfo", 2, 2, c_userinfo
, RIGHT_READ
},
1935 { "users", 0, 0, c_users
, RIGHT_READ
},
1936 { "version", 0, 0, c_version
, RIGHT_READ
},
1937 { "volume", 0, 2, c_volume
, RIGHT_READ
|RIGHT_VOLUME
}
1940 /** @brief Fetch a command body
1941 * @param c Connection
1942 * @param body_callback Called with body
1943 * @param u Passed to body_callback
1946 static int fetch_body(struct conn
*c
,
1947 body_callback_type body_callback
,
1949 assert(c
->line_reader
== command
);
1950 c
->line_reader
= body_line
;
1951 c
->body_callback
= body_callback
;
1953 vector_init(c
->body
);
1957 /** @brief @ref line_reader_type callback for command body lines
1958 * @param c Connection
1960 * @return 1 if complete, 0 if incomplete
1962 * Called from reader_callback().
1964 static int body_line(struct conn
*c
,
1969 /* That's the lot */
1970 c
->line_reader
= command
;
1971 vector_terminate(c
->body
);
1972 return c
->body_callback(c
, c
->body
->vec
, c
->body
->nvec
, c
->body_u
);
1975 vector_append(c
->body
, xstrdup(line
));
1976 return 1; /* completed */
1979 static void command_error(const char *msg
, void *u
) {
1982 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1985 /** @brief @ref line_reader_type callback for commands
1986 * @param c Connection
1988 * @return 1 if complete, 0 if incomplete
1990 * Called from reader_callback().
1992 static int command(struct conn
*c
, char *line
) {
1996 D(("server command %s", line
));
1997 /* We force everything into NFC as early as possible */
1998 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1999 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
2002 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
2003 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
2007 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
2010 if((n
= TABLE_FIND(commands
, name
, vec
[0])) < 0)
2011 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
2013 if(commands
[n
].rights
2014 && !(c
->rights
& commands
[n
].rights
)) {
2015 disorder_error(0, "%s attempted %s but lacks required rights",
2016 c
->who ? c
->who
: "NULL",
2018 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
2023 if(nvec
< commands
[n
].minargs
) {
2024 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
2027 if(nvec
> commands
[n
].maxargs
) {
2028 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
2031 return commands
[n
].fn(c
, vec
, nvec
);
2033 return 1; /* completed */
2036 /* redirect to the right reader callback for our current state */
2037 static int redirect_reader_callback(ev_source
*ev
,
2045 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
2048 /* the main command reader */
2049 static int reader_callback(ev_source
attribute((unused
)) *ev
,
2059 D(("server reader_callback"));
2060 while((eol
= memchr(ptr
, '\n', bytes
))) {
2062 ev_reader_consume(reader
, eol
- (char *)ptr
);
2063 complete
= c
->line_reader(c
, ptr
); /* usually command() */
2064 bytes
-= (eol
- (char *)ptr
);
2067 /* the command had better have set a new reader callback */
2069 /* there are further bytes to read, or we are at eof; arrange for the
2070 * command's reader callback to handle them */
2071 return ev_reader_incomplete(reader
);
2072 /* nothing's going on right now */
2075 /* command completed, we can go around and handle the next one */
2079 disorder_error(0, "S%x unterminated line", c
->tag
);
2080 D(("normal reader close"));
2083 D(("close associated writer"));
2084 ev_writer_close(c
->w
);
2087 remove_connection(c
);
2092 static int listen_callback(ev_source
*ev
,
2094 const struct sockaddr
attribute((unused
)) *remote
,
2095 socklen_t
attribute((unused
)) rlen
,
2097 const struct listener
*l
= u
;
2098 struct conn
*c
= xmalloc(sizeof *c
);
2099 static unsigned tags
;
2101 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
2104 c
->next
= connections
;
2107 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
2110 disorder_error(0, "ev_writer_new for file inbound connection (fd=%d) failed",
2115 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
2118 /* Main reason for failure is the FD is too big and that will already have
2121 "ev_reader_new for file inbound connection (fd=%d) failed",
2125 c
->reader
= reader_callback
;
2128 c
->line_reader
= command
;
2130 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
2131 sink_printf(ev_writer_sink(c
->w
), "231 %d %s %s\n",
2133 config
->authorization_algorithm
,
2134 hex(c
->nonce
, sizeof c
->nonce
));
2138 int server_start(ev_source
*ev
, int pf
,
2139 size_t socklen
, const struct sockaddr
*sa
,
2143 struct listener
*l
= xmalloc(sizeof *l
);
2144 static const int one
= 1;
2146 D(("server_init socket %s privileged=%d", name
, privileged
));
2148 if(privileged
&& pf
!= AF_UNIX
)
2149 disorder_fatal(0, "cannot create a privileged listener on a non-local port");
2150 fd
= xsocket(pf
, SOCK_STREAM
, 0);
2151 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
2152 if(bind(fd
, sa
, socklen
) < 0) {
2153 disorder_error(errno
, "error binding to %s", name
);
2161 l
->privileged
= privileged
;
2162 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
2164 disorder_info("listening on %s", name
);
2168 int server_stop(ev_source
*ev
, int fd
) {
2170 return ev_listen_cancel(ev
, fd
);