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
49 /** @brief Signature for line reader callback
52 * @return 0 if incomplete, 1 if complete
54 * @p line is 0-terminated and excludes the newline. It points into the
55 * input buffer so will become invalid shortly.
57 typedef int line_reader_type(struct conn
*c
,
60 /** @brief Signature for with-body command callbacks
62 * @param body List of body lines
63 * @param nbody Number of body lines
64 * @param u As passed to fetch_body()
65 * @return 0 to suspend input, 1 if complete
67 * The body strings are allocated (so survive indefinitely) and don't include
70 typedef int body_callback_type(struct conn
*c
,
75 /** @brief One client connection */
77 /** @brief Read commands from here */
79 /** @brief Send responses to here */
81 /** @brief Underlying file descriptor */
83 /** @brief Unique identifier for connection used in log messages */
85 /** @brief Login name or NULL */
87 /** @brief Event loop */
89 /** @brief Nonce chosen for this connection */
90 unsigned char nonce
[NONCE_SIZE
];
91 /** @brief Current reader callback
93 * We change this depending on whether we're servicing the @b log command
95 ev_reader_callback
*reader
;
96 /** @brief Event log output sending to this connection */
97 struct eventlog_output
*lo
;
98 /** @brief Parent listener */
99 const struct listener
*l
;
100 /** @brief Login cookie or NULL */
102 /** @brief Connection rights */
104 /** @brief Next connection */
106 /** @brief True if pending rescan had 'wait' set */
108 /** @brief Playlist that this connection locks */
109 const char *locked_playlist
;
110 /** @brief When that playlist was locked */
112 /** @brief Line reader function */
113 line_reader_type
*line_reader
;
114 /** @brief Called when command body has been read */
115 body_callback_type
*body_callback
;
116 /** @brief Passed to @c body_callback */
118 /** @brief Accumulating body */
119 struct vector body
[1];
122 /** @brief Linked list of connections */
123 static struct conn
*connections
;
125 static int reader_callback(ev_source
*ev
,
131 static int c_playlist_set_body(struct conn
*c
,
135 static int fetch_body(struct conn
*c
,
136 body_callback_type body_callback
,
138 static int body_line(struct conn
*c
, char *line
);
139 static int command(struct conn
*c
, char *line
);
141 static const char *noyes
[] = { "no", "yes" };
143 /** @brief Remove a connection from the connection list */
144 static void remove_connection(struct conn
*c
) {
147 for(cc
= &connections
; *cc
&& *cc
!= c
; cc
= &(*cc
)->next
)
153 /** @brief Called when a connection's writer fails or is shut down
155 * If the connection still has a raeder that is cancelled.
157 static int writer_error(ev_source
attribute((unused
)) *ev
,
162 D(("server writer_error S%x %d", c
->tag
, errno_value
));
163 if(errno_value
== 0) {
165 D(("S%x writer completed", c
->tag
));
167 if(errno_value
!= EPIPE
)
168 error(errno_value
, "S%x write error on socket", c
->tag
);
170 D(("cancel reader"));
171 ev_reader_cancel(c
->r
);
174 D(("done cancel reader"));
178 remove_connection(c
);
182 /** @brief Called when a conncetion's reader fails or is shut down
184 * If connection still has a writer then it is closed.
186 static int reader_error(ev_source
attribute((unused
)) *ev
,
191 D(("server reader_error S%x %d", c
->tag
, errno_value
));
192 error(errno_value
, "S%x read error on socket", c
->tag
);
194 ev_writer_close(c
->w
);
198 remove_connection(c
);
202 static int c_disable(struct conn
*c
, char **vec
, int nvec
) {
204 disable_playing(c
->who
);
205 else if(nvec
== 1 && !strcmp(vec
[0], "now"))
206 disable_playing(c
->who
);
208 sink_writes(ev_writer_sink(c
->w
), "550 invalid argument\n");
209 return 1; /* completed */
211 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
212 return 1; /* completed */
215 static int c_enable(struct conn
*c
,
216 char attribute((unused
)) **vec
,
217 int attribute((unused
)) nvec
) {
218 enable_playing(c
->who
, c
->ev
);
219 /* Enable implicitly unpauses if there is nothing playing */
220 if(paused
&& !playing
) resume_playing(c
->who
);
221 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
222 return 1; /* completed */
225 static int c_enabled(struct conn
*c
,
226 char attribute((unused
)) **vec
,
227 int attribute((unused
)) nvec
) {
228 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[playing_is_enabled()]);
229 return 1; /* completed */
232 static int c_play(struct conn
*c
, char **vec
,
233 int attribute((unused
)) nvec
) {
235 struct queue_entry
*q
;
237 if(!trackdb_exists(vec
[0])) {
238 sink_writes(ev_writer_sink(c
->w
), "550 track is not in database\n");
241 if(!(track
= trackdb_resolve(vec
[0]))) {
242 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
245 q
= queue_add(track
, c
->who
, WHERE_BEFORE_RANDOM
, origin_picked
);
247 /* If we added the first track, and something is playing, then prepare the
248 * new track. If nothing is playing then we don't bother as it wouldn't gain
250 if(q
== qhead
.next
&& playing
)
252 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", q
->id
);
253 /* If the queue was empty but we are for some reason paused then
255 if(!playing
) resume_playing(0);
257 return 1; /* completed */
260 static int c_remove(struct conn
*c
, char **vec
,
261 int attribute((unused
)) nvec
) {
262 struct queue_entry
*q
;
264 if(!(q
= queue_find(vec
[0]))) {
265 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
268 if(!right_removable(c
->rights
, c
->who
, q
)) {
269 error(0, "%s attempted remove but lacks required rights", c
->who
);
270 sink_writes(ev_writer_sink(c
->w
),
271 "510 Not authorized to remove that track\n");
274 queue_remove(q
, c
->who
);
275 /* De-prepare the track. */
277 /* See about adding a new random track */
278 add_random_track(c
->ev
);
279 /* Prepare whatever the next head track is. */
280 if(qhead
.next
!= &qhead
)
281 prepare(c
->ev
, qhead
.next
);
283 sink_writes(ev_writer_sink(c
->w
), "250 removed\n");
284 return 1; /* completed */
287 static int c_scratch(struct conn
*c
,
291 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
292 return 1; /* completed */
294 /* TODO there is a bug here: if we specify an ID but it's not the currently
295 * playing track then you will get 550 if you weren't authorized to scratch
296 * the currently playing track. */
297 if(!right_scratchable(c
->rights
, c
->who
, playing
)) {
298 error(0, "%s attempted scratch but lacks required rights", c
->who
);
299 sink_writes(ev_writer_sink(c
->w
),
300 "510 Not authorized to scratch that track\n");
303 scratch(c
->who
, nvec
== 1 ? vec
[0] : 0);
304 /* If you scratch an unpaused track then it is automatically unpaused */
306 sink_writes(ev_writer_sink(c
->w
), "250 scratched\n");
307 return 1; /* completed */
310 static int c_pause(struct conn
*c
,
311 char attribute((unused
)) **vec
,
312 int attribute((unused
)) nvec
) {
314 sink_writes(ev_writer_sink(c
->w
), "250 nothing is playing\n");
315 return 1; /* completed */
318 sink_writes(ev_writer_sink(c
->w
), "250 already paused\n");
319 return 1; /* completed */
321 if(pause_playing(c
->who
) < 0)
322 sink_writes(ev_writer_sink(c
->w
), "550 cannot pause this track\n");
324 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
328 static int c_resume(struct conn
*c
,
329 char attribute((unused
)) **vec
,
330 int attribute((unused
)) nvec
) {
332 sink_writes(ev_writer_sink(c
->w
), "250 not paused\n");
333 return 1; /* completed */
335 resume_playing(c
->who
);
336 sink_writes(ev_writer_sink(c
->w
), "250 paused\n");
340 static int c_shutdown(struct conn
*c
,
341 char attribute((unused
)) **vec
,
342 int attribute((unused
)) nvec
) {
343 info("S%x shut down by %s", c
->tag
, c
->who
);
344 sink_writes(ev_writer_sink(c
->w
), "250 shutting down\n");
345 ev_writer_flush(c
->w
);
349 static int c_reconfigure(struct conn
*c
,
350 char attribute((unused
)) **vec
,
351 int attribute((unused
)) nvec
) {
352 info("S%x reconfigure by %s", c
->tag
, c
->who
);
353 if(reconfigure(c
->ev
, 1))
354 sink_writes(ev_writer_sink(c
->w
), "550 error reading new config\n");
356 sink_writes(ev_writer_sink(c
->w
), "250 installed new config\n");
357 return 1; /* completed */
360 static void finished_rescan(void *ru
) {
361 struct conn
*const c
= ru
;
363 sink_writes(ev_writer_sink(c
->w
), "250 rescan completed\n");
364 /* Turn this connection back on */
365 ev_reader_enable(c
->r
);
368 static void start_fresh_rescan(void *ru
) {
369 struct conn
*const c
= ru
;
371 if(trackdb_rescan_underway()) {
372 /* Some other waiter beat us to it. However in this case we're happy to
373 * piggyback; the requirement is that a new rescan be started, not that it
374 * was _our_ rescan. */
376 /* We block until the rescan completes */
377 trackdb_add_rescanned(finished_rescan
, c
);
379 /* We report that the new rescan has started */
380 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
381 /* Turn this connection back on */
382 ev_reader_enable(c
->r
);
385 /* We are the first connection to get a callback so we must start a
388 /* We want to block until the new rescan completes */
389 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
391 /* We can report back immediately */
392 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
393 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
394 /* Turn this connection back on */
395 ev_reader_enable(c
->r
);
400 static int c_rescan(struct conn
*c
,
403 int flag_wait
= 0, flag_fresh
= 0, n
;
406 for(n
= 0; n
< nvec
; ++n
) {
407 if(!strcmp(vec
[n
], "wait"))
408 flag_wait
= 1; /* wait for rescan to complete */
410 /* Currently disabled because untested (and hard to test). */
411 else if(!strcmp(vec
[n
], "fresh"))
412 flag_fresh
= 1; /* don't piggyback underway rescan */
415 sink_writes(ev_writer_sink(c
->w
), "550 unknown flag\n");
416 return 1; /* completed */
419 /* Report what was requested */
420 info("S%x rescan by %s (%s %s)", c
->tag
, c
->who
,
421 flag_wait ?
"wait" : "",
422 flag_fresh ?
"fresh" : "");
423 if(trackdb_rescan_underway()) {
425 /* We want a fresh rescan but there is already one underway. Arrange a
426 * callback when it completes and then set off a new one. */
427 c
->rescan_wait
= flag_wait
;
428 trackdb_add_rescanned(start_fresh_rescan
, c
);
432 sink_writes(ev_writer_sink(c
->w
), "250 rescan queued\n");
436 /* There's a rescan underway, and it's acceptable to piggyback on it */
438 /* We want to block until completion. */
439 trackdb_add_rescanned(finished_rescan
, c
);
442 /* We don't want to block. So we just report that things are in
444 sink_writes(ev_writer_sink(c
->w
), "250 rescan already underway\n");
449 /* No rescan is underway. fresh is therefore irrelevant. */
451 /* We want to block until completion */
452 trackdb_rescan(c
->ev
, 1/*check*/, finished_rescan
, c
);
455 /* We don't want to block. */
456 trackdb_rescan(c
->ev
, 1/*check*/, 0, 0);
457 sink_writes(ev_writer_sink(c
->w
), "250 rescan initiated\n");
458 return 1; /* completed */
463 static int c_version(struct conn
*c
,
464 char attribute((unused
)) **vec
,
465 int attribute((unused
)) nvec
) {
466 /* VERSION had better only use the basic character set */
467 sink_printf(ev_writer_sink(c
->w
), "251 %s\n", disorder_short_version_string
);
468 return 1; /* completed */
471 static int c_playing(struct conn
*c
,
472 char attribute((unused
)) **vec
,
473 int attribute((unused
)) nvec
) {
475 queue_fix_sofar(playing
);
476 playing
->expected
= 0;
477 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", queue_marshall(playing
));
479 sink_printf(ev_writer_sink(c
->w
), "259 nothing playing\n");
480 return 1; /* completed */
483 static const char *connection_host(struct conn
*c
) {
486 struct sockaddr_in in
;
487 struct sockaddr_in6 in6
;
493 /* get connection data */
495 if(getpeername(c
->fd
, &u
.sa
, &l
) < 0) {
496 error(errno
, "S%x error calling getpeername", c
->tag
);
499 if(c
->l
->pf
!= PF_UNIX
) {
500 if((n
= getnameinfo(&u
.sa
, l
,
501 host
, sizeof host
, 0, 0, NI_NUMERICHOST
))) {
502 error(0, "S%x error calling getnameinfo: %s", c
->tag
, gai_strerror(n
));
505 return xstrdup(host
);
510 static int c_user(struct conn
*c
,
512 int attribute((unused
)) nvec
) {
514 const char *res
, *host
, *password
;
518 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
521 /* get connection data */
522 if(!(host
= connection_host(c
))) {
523 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
527 k
= trackdb_getuserinfo(vec
[0]);
528 /* reject nonexistent users */
530 error(0, "S%x unknown user '%s' from %s", c
->tag
, vec
[0], host
);
531 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
534 /* reject unconfirmed users */
535 if(kvp_get(k
, "confirmation")) {
536 error(0, "S%x unconfirmed user '%s' from %s", c
->tag
, vec
[0], host
);
537 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
540 password
= kvp_get(k
, "password");
541 if(!password
) password
= "";
542 if(parse_rights(kvp_get(k
, "rights"), &rights
, 1)) {
543 error(0, "error parsing rights for %s", vec
[0]);
544 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
547 /* check whether the response is right */
548 res
= authhash(c
->nonce
, sizeof c
->nonce
, password
,
549 config
->authorization_algorithm
);
550 if(wideopen
|| (res
&& !strcmp(res
, vec
[1]))) {
553 /* currently we only bother logging remote connections */
554 if(strcmp(host
, "local"))
555 info("S%x %s connected from %s", c
->tag
, vec
[0], host
);
557 c
->rights
|= RIGHT__LOCAL
;
558 sink_writes(ev_writer_sink(c
->w
), "230 OK\n");
561 /* oops, response was wrong */
562 info("S%x authentication failure for %s from %s", c
->tag
, vec
[0], host
);
563 sink_writes(ev_writer_sink(c
->w
), "530 authentication failed\n");
567 static int c_recent(struct conn
*c
,
568 char attribute((unused
)) **vec
,
569 int attribute((unused
)) nvec
) {
570 const struct queue_entry
*q
;
572 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
573 for(q
= phead
.next
; q
!= &phead
; q
= q
->next
)
574 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
575 sink_writes(ev_writer_sink(c
->w
), ".\n");
576 return 1; /* completed */
579 static int c_queue(struct conn
*c
,
580 char attribute((unused
)) **vec
,
581 int attribute((unused
)) nvec
) {
582 struct queue_entry
*q
;
587 sink_writes(ev_writer_sink(c
->w
), "253 Tracks follow\n");
588 if(playing_is_enabled() && !paused
) {
590 queue_fix_sofar(playing
);
591 if((l
= trackdb_get(playing
->track
, "_length"))
592 && (length
= atol(l
))) {
594 when
+= length
- playing
->sofar
+ config
->gap
;
597 /* Nothing is playing but playing is enabled, so whatever is
598 * first in the queue can be expected to start immediately. */
601 for(q
= qhead
.next
; q
!= &qhead
; q
= q
->next
) {
602 /* fill in estimated start time */
604 sink_printf(ev_writer_sink(c
->w
), " %s\n", queue_marshall(q
));
605 /* update for next track */
607 if((l
= trackdb_get(q
->track
, "_length"))
608 && (length
= atol(l
)))
609 when
+= length
+ config
->gap
;
614 sink_writes(ev_writer_sink(c
->w
), ".\n");
615 return 1; /* completed */
618 static int output_list(struct conn
*c
, char **vec
) {
620 sink_printf(ev_writer_sink(c
->w
), "%s\n", *vec
++);
621 sink_writes(ev_writer_sink(c
->w
), ".\n");
625 static int files_dirs(struct conn
*c
,
628 enum trackdb_listable what
) {
629 const char *dir
, *re
, *errstr
;
635 case 0: dir
= 0; re
= 0; break;
636 case 1: dir
= vec
[0]; re
= 0; break;
637 case 2: dir
= vec
[0]; re
= vec
[1]; break;
640 /* A bit of a bodge to make sure the args don't trample on cache keys */
641 if(dir
&& strchr(dir
, '\n')) {
642 sink_writes(ev_writer_sink(c
->w
), "550 invalid directory name\n");
645 if(re
&& strchr(re
, '\n')) {
646 sink_writes(ev_writer_sink(c
->w
), "550 invalid regexp\n");
649 /* We bother eliminating "" because the web interface is relatively
650 * likely to send it */
652 byte_xasprintf(&key
, "%d\n%s\n%s", (int)what
, dir ? dir
: "", re
);
653 fvec
= (char **)cache_get(&cache_files_type
, key
);
655 /* Got a cache hit, don't store the answer in the cache */
658 rec
= 0; /* quieten compiler */
660 /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer
662 if(!(rec
= pcre_compile(re
, PCRE_CASELESS
|PCRE_UTF8
,
663 &errstr
, &erroffset
, 0))) {
664 sink_printf(ev_writer_sink(c
->w
), "550 Error compiling regexp: %s\n",
668 /* It only counts as a miss if the regexp was valid. */
669 ++cache_files_misses
;
672 /* No regexp, don't bother caching the result */
678 /* No cache hit (either because a miss, or because we did not look) so do
681 fvec
= trackdb_list(dir
, 0, what
, rec
);
683 fvec
= trackdb_list(0, 0, what
, rec
);
686 /* Put the answer in the cache */
687 cache_put(&cache_files_type
, key
, fvec
);
688 sink_writes(ev_writer_sink(c
->w
), "253 Listing follow\n");
689 return output_list(c
, fvec
);
692 static int c_files(struct conn
*c
,
695 return files_dirs(c
, vec
, nvec
, trackdb_files
);
698 static int c_dirs(struct conn
*c
,
701 return files_dirs(c
, vec
, nvec
, trackdb_directories
);
704 static int c_allfiles(struct conn
*c
,
707 return files_dirs(c
, vec
, nvec
, trackdb_directories
|trackdb_files
);
710 static int c_get(struct conn
*c
,
712 int attribute((unused
)) nvec
) {
713 const char *v
, *track
;
715 if(!(track
= trackdb_resolve(vec
[0]))) {
716 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
719 if(vec
[1][0] != '_' && (v
= trackdb_get(track
, vec
[1])))
720 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
722 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
726 static int c_length(struct conn
*c
,
728 int attribute((unused
)) nvec
) {
729 const char *track
, *v
;
731 if(!(track
= trackdb_resolve(vec
[0]))) {
732 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
735 if((v
= trackdb_get(track
, "_length")))
736 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(v
));
738 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
742 static int c_set(struct conn
*c
,
744 int attribute((unused
)) nvec
) {
747 if(!(track
= trackdb_resolve(vec
[0]))) {
748 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
751 if(vec
[1][0] != '_' && !trackdb_set(track
, vec
[1], vec
[2]))
752 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
754 sink_writes(ev_writer_sink(c
->w
), "550 not found\n");
758 static int c_prefs(struct conn
*c
,
760 int attribute((unused
)) nvec
) {
764 if(!(track
= trackdb_resolve(vec
[0]))) {
765 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
768 k
= trackdb_get_all(track
);
769 sink_writes(ev_writer_sink(c
->w
), "253 prefs follow\n");
770 for(; k
; k
= k
->next
)
771 if(k
->name
[0] != '_') /* omit internal values */
772 sink_printf(ev_writer_sink(c
->w
),
773 " %s %s\n", quoteutf8(k
->name
), quoteutf8(k
->value
));
774 sink_writes(ev_writer_sink(c
->w
), ".\n");
778 static int c_exists(struct conn
*c
,
780 int attribute((unused
)) nvec
) {
781 /* trackdb_exists() does its own alias checking */
782 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[trackdb_exists(vec
[0])]);
786 static void search_parse_error(const char *msg
, void *u
) {
787 *(const char **)u
= msg
;
790 static int c_search(struct conn
*c
,
792 int attribute((unused
)) nvec
) {
793 char **terms
, **results
;
794 int nterms
, nresults
, n
;
795 const char *e
= "unknown error";
797 /* This is a bit of a bodge. Initially it's there to make the eclient
798 * interface a bit more convenient to add searching to, but it has the more
799 * compelling advantage that if everything uses it, then interpretation of
800 * user-supplied search strings will be the same everywhere. */
801 if(!(terms
= split(vec
[0], &nterms
, SPLIT_QUOTES
, search_parse_error
, &e
))) {
802 sink_printf(ev_writer_sink(c
->w
), "550 %s\n", e
);
804 results
= trackdb_search(terms
, nterms
, &nresults
);
805 sink_printf(ev_writer_sink(c
->w
), "253 %d matches\n", nresults
);
806 for(n
= 0; n
< nresults
; ++n
)
807 sink_printf(ev_writer_sink(c
->w
), "%s\n", results
[n
]);
808 sink_writes(ev_writer_sink(c
->w
), ".\n");
813 static int c_random_enable(struct conn
*c
,
814 char attribute((unused
)) **vec
,
815 int attribute((unused
)) nvec
) {
816 enable_random(c
->who
, c
->ev
);
817 /* Enable implicitly unpauses if there is nothing playing */
818 if(paused
&& !playing
) resume_playing(c
->who
);
819 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
820 return 1; /* completed */
823 static int c_random_disable(struct conn
*c
,
824 char attribute((unused
)) **vec
,
825 int attribute((unused
)) nvec
) {
826 disable_random(c
->who
);
827 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
828 return 1; /* completed */
831 static int c_random_enabled(struct conn
*c
,
832 char attribute((unused
)) **vec
,
833 int attribute((unused
)) nvec
) {
834 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", noyes
[random_is_enabled()]);
835 return 1; /* completed */
838 static void got_stats(char *stats
, void *u
) {
839 struct conn
*const c
= u
;
841 sink_printf(ev_writer_sink(c
->w
), "253 stats\n%s\n.\n", stats
);
842 /* Now we can start processing commands again */
843 ev_reader_enable(c
->r
);
846 static int c_stats(struct conn
*c
,
847 char attribute((unused
)) **vec
,
848 int attribute((unused
)) nvec
) {
849 trackdb_stats_subprocess(c
->ev
, got_stats
, c
);
850 return 0; /* not yet complete */
853 static int c_volume(struct conn
*c
,
865 l
= r
= atoi(vec
[0]);
876 rights
= set ? RIGHT_VOLUME
: RIGHT_READ
;
877 if(!(c
->rights
& rights
)) {
878 error(0, "%s attempted to set volume but lacks required rights", c
->who
);
879 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
882 if(!api
|| !api
->set_volume
) {
883 sink_writes(ev_writer_sink(c
->w
), "550 error accessing mixer\n");
886 (set ? api
->set_volume
: api
->get_volume
)(&l
, &r
);
887 sink_printf(ev_writer_sink(c
->w
), "252 %d %d\n", l
, r
);
888 if(l
!= volume_left
|| r
!= volume_right
) {
891 snprintf(lb
, sizeof lb
, "%d", l
);
892 snprintf(rb
, sizeof rb
, "%d", r
);
893 eventlog("volume", lb
, rb
, (char *)0);
898 /** @brief Called when data arrives on a log connection
900 * We just discard all such data. The client may occasionally send data as a
903 static int logging_reader_callback(ev_source
attribute((unused
)) *ev
,
905 void attribute((unused
)) *ptr
,
907 int attribute((unused
)) eof
,
908 void attribute((unused
)) *u
) {
911 ev_reader_consume(reader
, bytes
);
913 /* Oops, that's all for now */
914 D(("logging reader eof"));
917 ev_writer_close(c
->w
);
921 remove_connection(c
);
926 static void logclient(const char *msg
, void *user
) {
927 struct conn
*c
= user
;
930 /* This connection has gone up in smoke for some reason */
931 eventlog_remove(c
->lo
);
935 /* user_* messages are restricted */
936 if(!strncmp(msg
, "user_", 5)) {
937 /* They are only sent to admin users */
938 if(!(c
->rights
& RIGHT_ADMIN
))
940 /* They are not sent over TCP connections unless remote user-management is
942 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
))
945 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" %s\n",
946 (uintmax_t)time(0), msg
);
949 static int c_log(struct conn
*c
,
950 char attribute((unused
)) **vec
,
951 int attribute((unused
)) nvec
) {
954 sink_writes(ev_writer_sink(c
->w
), "254 OK\n");
955 /* pump out initial state */
957 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
959 playing_is_enabled() ?
"enable_play" : "disable_play");
960 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
962 random_is_enabled() ?
"enable_random" : "disable_random");
963 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state %s\n",
965 paused ?
"pause" : "resume");
967 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" state playing\n",
970 sink_printf(ev_writer_sink(c
->w
), "%"PRIxMAX
" volume %d %d\n",
971 (uintmax_t)now
, volume_left
, volume_right
);
972 c
->lo
= xmalloc(sizeof *c
->lo
);
973 c
->lo
->fn
= logclient
;
976 c
->reader
= logging_reader_callback
;
980 /** @brief Test whether a move is allowed
981 * @param c Connection
982 * @param qs List of IDs on queue
983 * @param nqs Number of IDs
984 * @return 0 if move is prohibited, non-0 if it is allowed
986 static int has_move_rights(struct conn
*c
, struct queue_entry
**qs
, int nqs
) {
987 for(; nqs
> 0; ++qs
, --nqs
) {
988 struct queue_entry
*const q
= *qs
;
990 if(!right_movable(c
->rights
, c
->who
, q
))
996 static int c_move(struct conn
*c
,
998 int attribute((unused
)) nvec
) {
999 struct queue_entry
*q
;
1002 if(!(q
= queue_find(vec
[0]))) {
1003 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1006 if(!has_move_rights(c
, &q
, 1)) {
1007 error(0, "%s attempted move but lacks required rights", c
->who
);
1008 sink_writes(ev_writer_sink(c
->w
),
1009 "510 Not authorized to move that track\n");
1012 n
= queue_move(q
, atoi(vec
[1]), c
->who
);
1013 sink_printf(ev_writer_sink(c
->w
), "252 %d\n", n
);
1014 /* If we've moved to the head of the queue then prepare the track. */
1020 static int c_moveafter(struct conn
*c
,
1022 int attribute((unused
)) nvec
) {
1023 struct queue_entry
*q
, **qs
;
1027 if(!(q
= queue_find(vec
[0]))) {
1028 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1035 qs
= xcalloc(nvec
, sizeof *qs
);
1036 for(n
= 0; n
< nvec
; ++n
)
1037 if(!(qs
[n
] = queue_find(vec
[n
]))) {
1038 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1041 if(!has_move_rights(c
, qs
, nvec
)) {
1042 error(0, "%s attempted moveafter but lacks required rights", c
->who
);
1043 sink_writes(ev_writer_sink(c
->w
),
1044 "510 Not authorized to move those tracks\n");
1047 queue_moveafter(q
, nvec
, qs
, c
->who
);
1048 sink_printf(ev_writer_sink(c
->w
), "250 Moved tracks\n");
1049 /* If we've moved to the head of the queue then prepare the track. */
1055 static int c_part(struct conn
*c
,
1057 int attribute((unused
)) nvec
) {
1060 if(!(track
= trackdb_resolve(vec
[0]))) {
1061 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1064 sink_printf(ev_writer_sink(c
->w
), "252 %s\n",
1065 quoteutf8(trackdb_getpart(track
, vec
[1], vec
[2])));
1069 static int c_resolve(struct conn
*c
,
1071 int attribute((unused
)) nvec
) {
1074 if(!(track
= trackdb_resolve(vec
[0]))) {
1075 sink_writes(ev_writer_sink(c
->w
), "550 cannot resolve track\n");
1078 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(track
));
1082 static int list_response(struct conn
*c
,
1085 sink_printf(ev_writer_sink(c
->w
), "253 %s\n", reply
);
1087 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1088 **list
== '.' ?
"." : "", *list
);
1091 sink_writes(ev_writer_sink(c
->w
), ".\n");
1092 return 1; /* completed */
1095 static int c_tags(struct conn
*c
,
1096 char attribute((unused
)) **vec
,
1097 int attribute((unused
)) nvec
) {
1098 return list_response(c
, "Tag list follows", trackdb_alltags());
1101 static int c_set_global(struct conn
*c
,
1103 int attribute((unused
)) nvec
) {
1104 if(vec
[0][0] == '_') {
1105 sink_writes(ev_writer_sink(c
->w
), "550 cannot set internal global preferences\n");
1108 trackdb_set_global(vec
[0], vec
[1], c
->who
);
1109 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1113 static int c_get_global(struct conn
*c
,
1115 int attribute((unused
)) nvec
) {
1116 const char *s
= trackdb_get_global(vec
[0]);
1119 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(s
));
1121 sink_writes(ev_writer_sink(c
->w
), "555 not found\n");
1125 static int c_nop(struct conn
*c
,
1126 char attribute((unused
)) **vec
,
1127 int attribute((unused
)) nvec
) {
1128 sink_printf(ev_writer_sink(c
->w
), "250 Quack\n");
1132 static int c_new(struct conn
*c
,
1142 if(max
<= 0 || max
> config
->new_max
)
1143 max
= config
->new_max
;
1144 tracks
= trackdb_new(0, max
);
1145 sink_printf(ev_writer_sink(c
->w
), "253 New track list follows\n");
1148 sink_printf(ev_writer_sink(c
->w
), "%s%s\n",
1149 **tracks
== '.' ?
"." : "", *tracks
);
1152 sink_writes(ev_writer_sink(c
->w
), ".\n");
1153 return 1; /* completed */
1157 static int c_rtp_address(struct conn
*c
,
1158 char attribute((unused
)) **vec
,
1159 int attribute((unused
)) nvec
) {
1160 if(api
== &uaudio_rtp
) {
1163 netaddress_format(&config
->broadcast
, NULL
, &addr
);
1164 sink_printf(ev_writer_sink(c
->w
), "252 %s %s\n",
1166 quoteutf8(addr
[2]));
1168 sink_writes(ev_writer_sink(c
->w
), "550 No RTP\n");
1172 static int c_cookie(struct conn
*c
,
1174 int attribute((unused
)) nvec
) {
1179 /* Can't log in twice on the same connection */
1181 sink_writes(ev_writer_sink(c
->w
), "530 already authenticated\n");
1184 /* Get some kind of peer identifcation */
1185 if(!(host
= connection_host(c
))) {
1186 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1189 /* Check the cookie */
1190 user
= verify_cookie(vec
[0], &rights
);
1192 sink_writes(ev_writer_sink(c
->w
), "530 authentication failure\n");
1199 if(strcmp(host
, "local"))
1200 info("S%x %s connected with cookie from %s", c
->tag
, user
, host
);
1202 c
->rights
|= RIGHT__LOCAL
;
1203 /* Response contains username so client knows who they are acting as */
1204 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1208 static int c_make_cookie(struct conn
*c
,
1209 char attribute((unused
)) **vec
,
1210 int attribute((unused
)) nvec
) {
1211 const char *cookie
= make_cookie(c
->who
);
1214 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cookie
));
1216 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create cookie\n");
1220 static int c_revoke(struct conn
*c
,
1221 char attribute((unused
)) **vec
,
1222 int attribute((unused
)) nvec
) {
1224 revoke_cookie(c
->cookie
);
1225 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1227 sink_writes(ev_writer_sink(c
->w
), "550 Did not log in with cookie\n");
1231 static int c_adduser(struct conn
*c
,
1236 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1237 error(0, "S%x: remote adduser", c
->tag
);
1238 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1243 if(parse_rights(vec
[2], 0, 1)) {
1244 sink_writes(ev_writer_sink(c
->w
), "550 Invalid rights list\n");
1248 rights
= config
->default_rights
;
1249 if(trackdb_adduser(vec
[0], vec
[1], rights
,
1250 0/*email*/, 0/*confirmation*/))
1251 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1253 sink_writes(ev_writer_sink(c
->w
), "250 User created\n");
1257 static int c_deluser(struct conn
*c
,
1259 int attribute((unused
)) nvec
) {
1262 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1263 error(0, "S%x: remote deluser", c
->tag
);
1264 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1267 if(trackdb_deluser(vec
[0])) {
1268 sink_writes(ev_writer_sink(c
->w
), "550 Cannot delete user\n");
1271 /* Zap connections belonging to deleted user */
1272 for(d
= connections
; d
; d
= d
->next
)
1273 if(!strcmp(d
->who
, vec
[0]))
1275 sink_writes(ev_writer_sink(c
->w
), "250 User deleted\n");
1279 static int c_edituser(struct conn
*c
,
1281 int attribute((unused
)) nvec
) {
1284 if(!config
->remote_userman
&& !(c
->rights
& RIGHT__LOCAL
)) {
1285 error(0, "S%x: remote edituser", c
->tag
);
1286 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1289 /* RIGHT_ADMIN can do anything; otherwise you can only set your own email
1290 * address and password. */
1291 if((c
->rights
& RIGHT_ADMIN
)
1292 || (!strcmp(c
->who
, vec
[0])
1293 && (!strcmp(vec
[1], "email")
1294 || !strcmp(vec
[1], "password")))) {
1295 if(trackdb_edituserinfo(vec
[0], vec
[1], vec
[2])) {
1296 sink_writes(ev_writer_sink(c
->w
), "550 Failed to change setting\n");
1299 if(!strcmp(vec
[1], "password")) {
1300 /* Zap all connections for this user after a password change */
1301 for(d
= connections
; d
; d
= d
->next
)
1302 if(!strcmp(d
->who
, vec
[0]))
1304 } else if(!strcmp(vec
[1], "rights")) {
1305 /* Update rights for this user */
1308 if(!parse_rights(vec
[2], &r
, 1)) {
1309 const char *new_rights
= rights_string(r
);
1310 for(d
= connections
; d
; d
= d
->next
) {
1311 if(!strcmp(d
->who
, vec
[0])) {
1314 /* Notify any log connections */
1316 sink_printf(ev_writer_sink(d
->w
),
1317 "%"PRIxMAX
" rights_changed %s\n",
1319 quoteutf8(new_rights
));
1324 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1326 error(0, "%s attempted edituser but lacks required rights", c
->who
);
1327 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1332 static int c_userinfo(struct conn
*c
,
1333 char attribute((unused
)) **vec
,
1334 int attribute((unused
)) nvec
) {
1338 /* We allow remote querying of rights so that clients can figure out what
1339 * they're allowed to do */
1340 if(!config
->remote_userman
1341 && !(c
->rights
& RIGHT__LOCAL
)
1342 && strcmp(vec
[1], "rights")) {
1343 error(0, "S%x: remote userinfo %s %s", c
->tag
, vec
[0], vec
[1]);
1344 sink_writes(ev_writer_sink(c
->w
), "550 Remote user management is disabled\n");
1347 /* RIGHT_ADMIN allows anything; otherwise you can only get your own email
1348 * address and rights list. */
1349 if((c
->rights
& RIGHT_ADMIN
)
1350 || (!strcmp(c
->who
, vec
[0])
1351 && (!strcmp(vec
[1], "email")
1352 || !strcmp(vec
[1], "rights")))) {
1353 if((k
= trackdb_getuserinfo(vec
[0])))
1354 if((value
= kvp_get(k
, vec
[1])))
1355 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(value
));
1357 sink_writes(ev_writer_sink(c
->w
), "555 Not set\n");
1359 sink_writes(ev_writer_sink(c
->w
), "550 No such user\n");
1361 error(0, "%s attempted userinfo but lacks required rights", c
->who
);
1362 sink_writes(ev_writer_sink(c
->w
), "510 Restricted to administrators\n");
1367 static int c_users(struct conn
*c
,
1368 char attribute((unused
)) **vec
,
1369 int attribute((unused
)) nvec
) {
1370 return list_response(c
, "User list follows", trackdb_listusers());
1373 static int c_register(struct conn
*c
,
1375 int attribute((unused
)) nvec
) {
1377 uint32_t nonce
[CONFIRM_SIZE
];
1378 char nonce_str
[(32 * CONFIRM_SIZE
) / 5 + 1];
1380 /* The confirmation string is username/base62(nonce). The confirmation
1381 * process will pick the username back out to identify them but the _whole_
1382 * string is used as the confirmation string. Base 62 means we used only
1383 * letters and digits, minimizing the chance of the URL being mispasted. */
1384 gcry_randomize(nonce
, sizeof nonce
, GCRY_STRONG_RANDOM
);
1385 if(basen(nonce
, CONFIRM_SIZE
, nonce_str
, sizeof nonce_str
, 62)) {
1386 error(0, "buffer too small encoding confirmation string");
1387 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1389 byte_xasprintf(&cs
, "%s/%s", vec
[0], nonce_str
);
1390 if(trackdb_adduser(vec
[0], vec
[1], config
->default_rights
, vec
[2], cs
))
1391 sink_writes(ev_writer_sink(c
->w
), "550 Cannot create user\n");
1393 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(cs
));
1397 static int c_confirm(struct conn
*c
,
1399 int attribute((unused
)) nvec
) {
1404 /* Get some kind of peer identifcation */
1405 if(!(host
= connection_host(c
))) {
1406 sink_writes(ev_writer_sink(c
->w
), "530 Authentication failure\n");
1409 /* Picking the LAST / means we don't (here) rule out slashes in usernames. */
1410 if(!(sep
= strrchr(vec
[0], '/'))) {
1411 sink_writes(ev_writer_sink(c
->w
), "550 Malformed confirmation string\n");
1414 user
= xstrndup(vec
[0], sep
- vec
[0]);
1415 if(trackdb_confirm(user
, vec
[0], &rights
))
1416 sink_writes(ev_writer_sink(c
->w
), "550 Incorrect confirmation string\n");
1421 if(strcmp(host
, "local"))
1422 info("S%x %s confirmed from %s", c
->tag
, user
, host
);
1424 c
->rights
|= RIGHT__LOCAL
;
1425 /* Response contains username so client knows who they are acting as */
1426 sink_printf(ev_writer_sink(c
->w
), "232 %s\n", quoteutf8(user
));
1431 static int sent_reminder(ev_source
attribute((unused
)) *ev
,
1432 pid_t
attribute((unused
)) pid
,
1434 const struct rusage
attribute((unused
)) *rusage
,
1436 struct conn
*const c
= u
;
1438 /* Tell the client what went down */
1440 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1442 error(0, "reminder subprocess %s", wstat(status
));
1443 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1445 /* Re-enable this connection */
1446 ev_reader_enable(c
->r
);
1450 static int c_reminder(struct conn
*c
,
1452 int attribute((unused
)) nvec
) {
1454 const char *password
, *email
, *text
, *encoding
, *charset
, *content_type
;
1459 static hash
*last_reminder
;
1461 if(!config
->mail_sender
) {
1462 error(0, "cannot send password reminders because mail_sender not set");
1463 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1466 if(!(k
= trackdb_getuserinfo(vec
[0]))) {
1467 error(0, "reminder for user '%s' who does not exist", vec
[0]);
1468 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1471 if(!(email
= kvp_get(k
, "email"))
1472 || !email_valid(email
)) {
1473 error(0, "user '%s' has no valid email address", vec
[0]);
1474 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1477 if(!(password
= kvp_get(k
, "password"))
1479 error(0, "user '%s' has no password", vec
[0]);
1480 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1483 /* Rate-limit reminders. This hash is bounded in size by the number of
1484 * users. If this is actually a problem for anyone then we can periodically
1487 last_reminder
= hash_new(sizeof (time_t));
1488 last
= hash_find(last_reminder
, vec
[0]);
1490 if(last
&& now
< *last
+ config
->reminder_interval
) {
1491 error(0, "sent a password reminder to '%s' too recently", vec
[0]);
1492 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1495 /* Send the reminder */
1496 /* TODO this should be templatized and to some extent merged with
1497 * the code in act_register() */
1498 byte_xasprintf((char **)&text
,
1499 "Someone requested that you be sent a reminder of your DisOrder password.\n"
1500 "Your password is:\n"
1503 if(!(text
= mime_encode_text(text
, &charset
, &encoding
)))
1504 fatal(0, "cannot encode email");
1505 byte_xasprintf((char **)&content_type
, "text/plain;charset=%s",
1506 quote822(charset
, 0));
1507 pid
= sendmail_subprocess("", config
->mail_sender
, email
,
1508 "DisOrder password reminder",
1509 encoding
, content_type
, text
);
1511 sink_writes(ev_writer_sink(c
->w
), "550 Cannot send a reminder email\n");
1514 hash_add(last_reminder
, vec
[0], &now
, HASH_INSERT_OR_REPLACE
);
1515 info("sending a passsword reminder to user '%s'", vec
[0]);
1516 /* We can only continue when the subprocess finishes */
1517 ev_child(c
->ev
, pid
, 0, sent_reminder
, c
);
1521 static int c_schedule_list(struct conn
*c
,
1522 char attribute((unused
)) **vec
,
1523 int attribute((unused
)) nvec
) {
1524 char **ids
= schedule_list(0);
1525 sink_writes(ev_writer_sink(c
->w
), "253 ID list follows\n");
1527 sink_printf(ev_writer_sink(c
->w
), "%s\n", *ids
++);
1528 sink_writes(ev_writer_sink(c
->w
), ".\n");
1529 return 1; /* completed */
1532 static int c_schedule_get(struct conn
*c
,
1534 int attribute((unused
)) nvec
) {
1535 struct kvp
*actiondata
= schedule_get(vec
[0]), *k
;
1538 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1539 return 1; /* completed */
1541 /* Scheduled events are public information. Anyone with RIGHT_READ can see
1543 sink_writes(ev_writer_sink(c
->w
), "253 Event information follows\n");
1544 for(k
= actiondata
; k
; k
= k
->next
)
1545 sink_printf(ev_writer_sink(c
->w
), " %s %s\n",
1546 quoteutf8(k
->name
), quoteutf8(k
->value
));
1547 sink_writes(ev_writer_sink(c
->w
), ".\n");
1548 return 1; /* completed */
1551 static int c_schedule_del(struct conn
*c
,
1553 int attribute((unused
)) nvec
) {
1554 struct kvp
*actiondata
= schedule_get(vec
[0]);
1557 sink_writes(ev_writer_sink(c
->w
), "555 No such event\n");
1558 return 1; /* completed */
1560 /* If you have admin rights you can delete anything. If you don't then you
1561 * can only delete your own scheduled events. */
1562 if(!(c
->rights
& RIGHT_ADMIN
)) {
1563 const char *who
= kvp_get(actiondata
, "who");
1565 if(!who
|| !c
->who
|| strcmp(who
, c
->who
)) {
1566 sink_writes(ev_writer_sink(c
->w
), "551 Not authorized\n");
1567 return 1; /* completed */
1570 if(schedule_del(vec
[0]))
1571 sink_writes(ev_writer_sink(c
->w
), "550 Could not delete scheduled event\n");
1573 sink_writes(ev_writer_sink(c
->w
), "250 Deleted\n");
1574 return 1; /* completed */
1577 static int c_schedule_add(struct conn
*c
,
1580 struct kvp
*actiondata
= 0;
1583 /* Standard fields */
1584 kvp_set(&actiondata
, "who", c
->who
);
1585 kvp_set(&actiondata
, "when", vec
[0]);
1586 kvp_set(&actiondata
, "priority", vec
[1]);
1587 kvp_set(&actiondata
, "action", vec
[2]);
1588 /* Action-dependent fields */
1589 if(!strcmp(vec
[2], "play")) {
1591 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1594 if(!trackdb_exists(vec
[3])) {
1595 sink_writes(ev_writer_sink(c
->w
), "550 Track is not in database\n");
1598 kvp_set(&actiondata
, "track", vec
[3]);
1599 } else if(!strcmp(vec
[2], "set-global")) {
1600 if(nvec
< 4 || nvec
> 5) {
1601 sink_writes(ev_writer_sink(c
->w
), "550 Wrong number of arguments\n");
1604 kvp_set(&actiondata
, "key", vec
[3]);
1606 kvp_set(&actiondata
, "value", vec
[4]);
1608 sink_writes(ev_writer_sink(c
->w
), "550 Unknown action\n");
1611 /* schedule_add() checks user rights */
1612 id
= schedule_add(c
->ev
, actiondata
);
1614 sink_writes(ev_writer_sink(c
->w
), "550 Cannot add scheduled event\n");
1616 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", id
);
1620 static int c_adopt(struct conn
*c
,
1622 int attribute((unused
)) nvec
) {
1623 struct queue_entry
*q
;
1626 sink_writes(ev_writer_sink(c
->w
), "550 no identity\n");
1629 if(!(q
= queue_find(vec
[0]))) {
1630 sink_writes(ev_writer_sink(c
->w
), "550 no such track on the queue\n");
1633 if(q
->origin
!= origin_random
) {
1634 sink_writes(ev_writer_sink(c
->w
), "550 not a random track\n");
1637 q
->origin
= origin_adopted
;
1638 q
->submitter
= xstrdup(c
->who
);
1639 eventlog("adopted", q
->id
, q
->submitter
, (char *)0);
1641 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1645 static int playlist_response(struct conn
*c
,
1649 assert(!"cannot cope with success");
1651 sink_writes(ev_writer_sink(c
->w
), "550 Access denied\n");
1654 sink_writes(ev_writer_sink(c
->w
), "550 Invalid playlist name\n");
1657 sink_writes(ev_writer_sink(c
->w
), "555 No such playlist\n");
1660 sink_writes(ev_writer_sink(c
->w
), "550 Error accessing playlist\n");
1666 static int c_playlist_get(struct conn
*c
,
1668 int attribute((unused
)) nvec
) {
1672 if(!(err
= trackdb_playlist_get(vec
[0], c
->who
, &tracks
, 0, 0)))
1673 return list_response(c
, "Playlist contents follows", tracks
);
1675 return playlist_response(c
, err
);
1678 static int c_playlist_set(struct conn
*c
,
1680 int attribute((unused
)) nvec
) {
1681 return fetch_body(c
, c_playlist_set_body
, vec
[0]);
1684 static int c_playlist_set_body(struct conn
*c
,
1688 const char *playlist
= u
;
1691 if(!c
->locked_playlist
1692 || strcmp(playlist
, c
->locked_playlist
)) {
1693 sink_writes(ev_writer_sink(c
->w
), "550 Playlist is not locked\n");
1696 if(!(err
= trackdb_playlist_set(playlist
, c
->who
,
1698 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1701 return playlist_response(c
, err
);
1704 static int c_playlist_get_share(struct conn
*c
,
1706 int attribute((unused
)) nvec
) {
1710 if(!(err
= trackdb_playlist_get(vec
[0], c
->who
, 0, 0, &share
))) {
1711 sink_printf(ev_writer_sink(c
->w
), "252 %s\n", quoteutf8(share
));
1714 return playlist_response(c
, err
);
1717 static int c_playlist_set_share(struct conn
*c
,
1719 int attribute((unused
)) nvec
) {
1722 if(!(err
= trackdb_playlist_set(vec
[0], c
->who
, 0, 0, vec
[1]))) {
1723 sink_printf(ev_writer_sink(c
->w
), "250 OK\n");
1726 return playlist_response(c
, err
);
1729 static int c_playlists(struct conn
*c
,
1730 char attribute((unused
)) **vec
,
1731 int attribute((unused
)) nvec
) {
1734 trackdb_playlist_list(c
->who
, &p
, 0);
1735 return list_response(c
, "List of playlists follows", p
);
1738 static int c_playlist_delete(struct conn
*c
,
1740 int attribute((unused
)) nvec
) {
1743 if(!(err
= trackdb_playlist_delete(vec
[0], c
->who
))) {
1744 sink_writes(ev_writer_sink(c
->w
), "250 OK\n");
1747 return playlist_response(c
, err
);
1750 static int c_playlist_lock(struct conn
*c
,
1752 int attribute((unused
)) nvec
) {
1756 /* Check we're allowed to modify this playlist */
1757 if((err
= trackdb_playlist_set(vec
[0], c
->who
, 0, 0, 0)))
1758 return playlist_response(c
, err
);
1759 /* If we hold a lock don't allow a new one */
1760 if(c
->locked_playlist
) {
1761 sink_writes(ev_writer_sink(c
->w
), "550 Already holding a lock\n");
1764 /* See if some other connection locks the same playlist */
1765 for(cc
= connections
; cc
; cc
= cc
->next
)
1766 if(cc
->locked_playlist
&& !strcmp(cc
->locked_playlist
, vec
[0]))
1769 /* TODO: implement config->playlist_lock_timeout */
1770 sink_writes(ev_writer_sink(c
->w
), "550 Already locked\n");
1773 c
->locked_playlist
= xstrdup(vec
[0]);
1774 time(&c
->locked_when
);
1775 sink_writes(ev_writer_sink(c
->w
), "250 Acquired lock\n");
1779 static int c_playlist_unlock(struct conn
*c
,
1780 char attribute((unused
)) **vec
,
1781 int attribute((unused
)) nvec
) {
1782 if(!c
->locked_playlist
) {
1783 sink_writes(ev_writer_sink(c
->w
), "550 Not holding a lock\n");
1786 c
->locked_playlist
= 0;
1787 sink_writes(ev_writer_sink(c
->w
), "250 Released lock\n");
1791 static const struct command
{
1792 /** @brief Command name */
1795 /** @brief Minimum number of arguments */
1798 /** @brief Maximum number of arguments */
1801 /** @brief Function to process command */
1802 int (*fn
)(struct conn
*, char **, int);
1804 /** @brief Rights required to execute command
1806 * 0 means that the command can be issued without logging in. If multiple
1807 * bits are listed here any of those rights will do.
1811 { "adduser", 2, 3, c_adduser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1812 { "adopt", 1, 1, c_adopt
, RIGHT_PLAY
},
1813 { "allfiles", 0, 2, c_allfiles
, RIGHT_READ
},
1814 { "confirm", 1, 1, c_confirm
, 0 },
1815 { "cookie", 1, 1, c_cookie
, 0 },
1816 { "deluser", 1, 1, c_deluser
, RIGHT_ADMIN
|RIGHT__LOCAL
},
1817 { "dirs", 0, 2, c_dirs
, RIGHT_READ
},
1818 { "disable", 0, 1, c_disable
, RIGHT_GLOBAL_PREFS
},
1819 { "edituser", 3, 3, c_edituser
, RIGHT_ADMIN
|RIGHT_USERINFO
},
1820 { "enable", 0, 0, c_enable
, RIGHT_GLOBAL_PREFS
},
1821 { "enabled", 0, 0, c_enabled
, RIGHT_READ
},
1822 { "exists", 1, 1, c_exists
, RIGHT_READ
},
1823 { "files", 0, 2, c_files
, RIGHT_READ
},
1824 { "get", 2, 2, c_get
, RIGHT_READ
},
1825 { "get-global", 1, 1, c_get_global
, RIGHT_READ
},
1826 { "length", 1, 1, c_length
, RIGHT_READ
},
1827 { "log", 0, 0, c_log
, RIGHT_READ
},
1828 { "make-cookie", 0, 0, c_make_cookie
, RIGHT_READ
},
1829 { "move", 2, 2, c_move
, RIGHT_MOVE__MASK
},
1830 { "moveafter", 1, INT_MAX
, c_moveafter
, RIGHT_MOVE__MASK
},
1831 { "new", 0, 1, c_new
, RIGHT_READ
},
1832 { "nop", 0, 0, c_nop
, 0 },
1833 { "part", 3, 3, c_part
, RIGHT_READ
},
1834 { "pause", 0, 0, c_pause
, RIGHT_PAUSE
},
1835 { "play", 1, 1, c_play
, RIGHT_PLAY
},
1836 { "playing", 0, 0, c_playing
, RIGHT_READ
},
1837 { "playlist-delete", 1, 1, c_playlist_delete
, RIGHT_PLAY
},
1838 { "playlist-get", 1, 1, c_playlist_get
, RIGHT_READ
},
1839 { "playlist-get-share", 1, 1, c_playlist_get_share
, RIGHT_READ
},
1840 { "playlist-lock", 1, 1, c_playlist_lock
, RIGHT_PLAY
},
1841 { "playlist-set", 1, 1, c_playlist_set
, RIGHT_PLAY
},
1842 { "playlist-set-share", 2, 2, c_playlist_set_share
, RIGHT_PLAY
},
1843 { "playlist-unlock", 0, 0, c_playlist_unlock
, RIGHT_PLAY
},
1844 { "playlists", 0, 0, c_playlists
, RIGHT_READ
},
1845 { "prefs", 1, 1, c_prefs
, RIGHT_READ
},
1846 { "queue", 0, 0, c_queue
, RIGHT_READ
},
1847 { "random-disable", 0, 0, c_random_disable
, RIGHT_GLOBAL_PREFS
},
1848 { "random-enable", 0, 0, c_random_enable
, RIGHT_GLOBAL_PREFS
},
1849 { "random-enabled", 0, 0, c_random_enabled
, RIGHT_READ
},
1850 { "recent", 0, 0, c_recent
, RIGHT_READ
},
1851 { "reconfigure", 0, 0, c_reconfigure
, RIGHT_ADMIN
},
1852 { "register", 3, 3, c_register
, RIGHT_REGISTER
|RIGHT__LOCAL
},
1853 { "reminder", 1, 1, c_reminder
, RIGHT__LOCAL
},
1854 { "remove", 1, 1, c_remove
, RIGHT_REMOVE__MASK
},
1855 { "rescan", 0, INT_MAX
, c_rescan
, RIGHT_RESCAN
},
1856 { "resolve", 1, 1, c_resolve
, RIGHT_READ
},
1857 { "resume", 0, 0, c_resume
, RIGHT_PAUSE
},
1858 { "revoke", 0, 0, c_revoke
, RIGHT_READ
},
1859 { "rtp-address", 0, 0, c_rtp_address
, 0 },
1860 { "schedule-add", 3, INT_MAX
, c_schedule_add
, RIGHT_READ
},
1861 { "schedule-del", 1, 1, c_schedule_del
, RIGHT_READ
},
1862 { "schedule-get", 1, 1, c_schedule_get
, RIGHT_READ
},
1863 { "schedule-list", 0, 0, c_schedule_list
, RIGHT_READ
},
1864 { "scratch", 0, 1, c_scratch
, RIGHT_SCRATCH__MASK
},
1865 { "search", 1, 1, c_search
, RIGHT_READ
},
1866 { "set", 3, 3, c_set
, RIGHT_PREFS
, },
1867 { "set-global", 2, 2, c_set_global
, RIGHT_GLOBAL_PREFS
},
1868 { "shutdown", 0, 0, c_shutdown
, RIGHT_ADMIN
},
1869 { "stats", 0, 0, c_stats
, RIGHT_READ
},
1870 { "tags", 0, 0, c_tags
, RIGHT_READ
},
1871 { "unset", 2, 2, c_set
, RIGHT_PREFS
},
1872 { "unset-global", 1, 1, c_set_global
, RIGHT_GLOBAL_PREFS
},
1873 { "user", 2, 2, c_user
, 0 },
1874 { "userinfo", 2, 2, c_userinfo
, RIGHT_READ
},
1875 { "users", 0, 0, c_users
, RIGHT_READ
},
1876 { "version", 0, 0, c_version
, RIGHT_READ
},
1877 { "volume", 0, 2, c_volume
, RIGHT_READ
|RIGHT_VOLUME
}
1880 /** @brief Fetch a command body
1881 * @param c Connection
1882 * @param body_callback Called with body
1883 * @param u Passed to body_callback
1886 static int fetch_body(struct conn
*c
,
1887 body_callback_type body_callback
,
1889 assert(c
->line_reader
== command
);
1890 c
->line_reader
= body_line
;
1891 c
->body_callback
= body_callback
;
1893 vector_init(c
->body
);
1897 /** @brief @ref line_reader_type callback for command body lines
1898 * @param c Connection
1900 * @return 1 if complete, 0 if incomplete
1902 * Called from reader_callback().
1904 static int body_line(struct conn
*c
,
1909 /* That's the lot */
1910 c
->line_reader
= command
;
1911 vector_terminate(c
->body
);
1912 return c
->body_callback(c
, c
->body
->vec
, c
->body
->nvec
, c
->body_u
);
1915 vector_append(c
->body
, xstrdup(line
));
1916 return 1; /* completed */
1919 static void command_error(const char *msg
, void *u
) {
1922 sink_printf(ev_writer_sink(c
->w
), "500 parse error: %s\n", msg
);
1925 /** @brief @ref line_reader_type callback for commands
1926 * @param c Connection
1928 * @return 1 if complete, 0 if incomplete
1930 * Called from reader_callback().
1932 static int command(struct conn
*c
, char *line
) {
1936 D(("server command %s", line
));
1937 /* We force everything into NFC as early as possible */
1938 if(!(line
= utf8_compose_canon(line
, strlen(line
), 0))) {
1939 sink_writes(ev_writer_sink(c
->w
), "500 cannot normalize command\n");
1942 if(!(vec
= split(line
, &nvec
, SPLIT_QUOTES
, command_error
, c
))) {
1943 sink_writes(ev_writer_sink(c
->w
), "500 cannot parse command\n");
1947 sink_writes(ev_writer_sink(c
->w
), "500 do what?\n");
1950 if((n
= TABLE_FIND(commands
, name
, vec
[0])) < 0)
1951 sink_writes(ev_writer_sink(c
->w
), "500 unknown command\n");
1953 if(commands
[n
].rights
1954 && !(c
->rights
& commands
[n
].rights
)) {
1955 error(0, "%s attempted %s but lacks required rights", c
->who ? c
->who
: "NULL",
1957 sink_writes(ev_writer_sink(c
->w
), "510 Prohibited\n");
1962 if(nvec
< commands
[n
].minargs
) {
1963 sink_writes(ev_writer_sink(c
->w
), "500 missing argument(s)\n");
1966 if(nvec
> commands
[n
].maxargs
) {
1967 sink_writes(ev_writer_sink(c
->w
), "500 too many arguments\n");
1970 return commands
[n
].fn(c
, vec
, nvec
);
1972 return 1; /* completed */
1975 /* redirect to the right reader callback for our current state */
1976 static int redirect_reader_callback(ev_source
*ev
,
1984 return c
->reader(ev
, reader
, ptr
, bytes
, eof
, u
);
1987 /* the main command reader */
1988 static int reader_callback(ev_source
attribute((unused
)) *ev
,
1998 D(("server reader_callback"));
1999 while((eol
= memchr(ptr
, '\n', bytes
))) {
2001 ev_reader_consume(reader
, eol
- (char *)ptr
);
2002 complete
= c
->line_reader(c
, ptr
); /* usually command() */
2003 bytes
-= (eol
- (char *)ptr
);
2006 /* the command had better have set a new reader callback */
2008 /* there are further bytes to read, or we are at eof; arrange for the
2009 * command's reader callback to handle them */
2010 return ev_reader_incomplete(reader
);
2011 /* nothing's going on right now */
2014 /* command completed, we can go around and handle the next one */
2018 error(0, "S%x unterminated line", c
->tag
);
2019 D(("normal reader close"));
2022 D(("close associated writer"));
2023 ev_writer_close(c
->w
);
2026 remove_connection(c
);
2031 static int listen_callback(ev_source
*ev
,
2033 const struct sockaddr
attribute((unused
)) *remote
,
2034 socklen_t
attribute((unused
)) rlen
,
2036 const struct listener
*l
= u
;
2037 struct conn
*c
= xmalloc(sizeof *c
);
2038 static unsigned tags
;
2040 D(("server listen_callback fd %d (%s)", fd
, l
->name
));
2043 c
->next
= connections
;
2046 c
->w
= ev_writer_new(ev
, fd
, writer_error
, c
,
2049 error(0, "ev_writer_new for file inbound connection (fd=%d) failed",
2054 c
->r
= ev_reader_new(ev
, fd
, redirect_reader_callback
, reader_error
, c
,
2057 /* Main reason for failure is the FD is too big and that will already have
2059 fatal(0, "ev_reader_new for file inbound connection (fd=%d) failed", fd
);
2062 c
->reader
= reader_callback
;
2065 c
->line_reader
= command
;
2067 gcry_randomize(c
->nonce
, sizeof c
->nonce
, GCRY_STRONG_RANDOM
);
2068 sink_printf(ev_writer_sink(c
->w
), "231 %d %s %s\n",
2070 config
->authorization_algorithm
,
2071 hex(c
->nonce
, sizeof c
->nonce
));
2075 int server_start(ev_source
*ev
, int pf
,
2076 size_t socklen
, const struct sockaddr
*sa
,
2079 struct listener
*l
= xmalloc(sizeof *l
);
2080 static const int one
= 1;
2082 D(("server_init socket %s", name
));
2083 fd
= xsocket(pf
, SOCK_STREAM
, 0);
2084 xsetsockopt(fd
, SOL_SOCKET
, SO_REUSEADDR
, &one
, sizeof one
);
2085 if(bind(fd
, sa
, socklen
) < 0) {
2086 error(errno
, "error binding to %s", name
);
2094 if(ev_listen(ev
, fd
, listen_callback
, l
, "server listener"))
2096 info("listening on %s", name
);
2100 int server_stop(ev_source
*ev
, int fd
) {
2102 return ev_listen_cancel(ev
, fd
);