Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
8a886602 | 3 | * Copyright (C) 2004-2012 Richard Kettlewell |
460b9539 | 4 | * |
e7eb3a27 | 5 | * This program is free software: you can redistribute it and/or modify |
460b9539 | 6 | * it under the terms of the GNU General Public License as published by |
e7eb3a27 | 7 | * the Free Software Foundation, either version 3 of the License, or |
460b9539 | 8 | * (at your option) any later version. |
9 | * | |
e7eb3a27 RK |
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. | |
14 | * | |
460b9539 | 15 | * You should have received a copy of the GNU General Public License |
e7eb3a27 | 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
460b9539 | 17 | */ |
18 | ||
05b75f8d | 19 | #include "disorder-server.h" |
53710d44 | 20 | #include "basen.h" |
460b9539 | 21 | |
22 | #ifndef NONCE_SIZE | |
23 | # define NONCE_SIZE 16 | |
24 | #endif | |
25 | ||
10114017 | 26 | #ifndef CONFIRM_SIZE |
53710d44 RK |
27 | /** @brief Size of nonce in confirmation string in 32-bit words |
28 | * | |
29 | * 64 bits gives 11 digits (in base 62). | |
30 | */ | |
31 | # define CONFIRM_SIZE 2 | |
10114017 | 32 | #endif |
33 | ||
460b9539 | 34 | int volume_left, volume_right; /* last known volume */ |
35 | ||
18e6d6e6 | 36 | /** @brief Accept all well-formed login attempts |
37 | * | |
38 | * Used in debugging. | |
39 | */ | |
40 | int wideopen; | |
41 | ||
460b9539 | 42 | struct listener { |
43 | const char *name; | |
44 | int pf; | |
de37b640 | 45 | int privileged; |
460b9539 | 46 | }; |
47 | ||
f65f5aff RK |
48 | struct conn; |
49 | ||
50 | /** @brief Signature for line reader callback | |
51 | * @param c Connection | |
52 | * @param line Line | |
53 | * @return 0 if incomplete, 1 if complete | |
54 | * | |
55 | * @p line is 0-terminated and excludes the newline. It points into the | |
56 | * input buffer so will become invalid shortly. | |
57 | */ | |
58 | typedef int line_reader_type(struct conn *c, | |
59 | char *line); | |
60 | ||
61 | /** @brief Signature for with-body command callbacks | |
62 | * @param c Connection | |
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 | |
67 | * | |
68 | * The body strings are allocated (so survive indefinitely) and don't include | |
69 | * newlines. | |
70 | */ | |
71 | typedef int body_callback_type(struct conn *c, | |
72 | char **body, | |
73 | int nbody, | |
74 | void *u); | |
75 | ||
397ef7bb | 76 | /** @brief One client connection */ |
460b9539 | 77 | struct conn { |
397ef7bb | 78 | /** @brief Read commands from here */ |
460b9539 | 79 | ev_reader *r; |
397ef7bb | 80 | /** @brief Send responses to here */ |
460b9539 | 81 | ev_writer *w; |
397ef7bb | 82 | /** @brief Underlying file descriptor */ |
460b9539 | 83 | int fd; |
397ef7bb | 84 | /** @brief Unique identifier for connection used in log messages */ |
460b9539 | 85 | unsigned tag; |
397ef7bb | 86 | /** @brief Login name or NULL */ |
460b9539 | 87 | char *who; |
397ef7bb | 88 | /** @brief Event loop */ |
460b9539 | 89 | ev_source *ev; |
397ef7bb | 90 | /** @brief Nonce chosen for this connection */ |
460b9539 | 91 | unsigned char nonce[NONCE_SIZE]; |
397ef7bb RK |
92 | /** @brief Current reader callback |
93 | * | |
94 | * We change this depending on whether we're servicing the @b log command | |
95 | */ | |
460b9539 | 96 | ev_reader_callback *reader; |
397ef7bb | 97 | /** @brief Event log output sending to this connection */ |
460b9539 | 98 | struct eventlog_output *lo; |
397ef7bb | 99 | /** @brief Parent listener */ |
460b9539 | 100 | const struct listener *l; |
b12be54a RK |
101 | /** @brief Login cookie or NULL */ |
102 | char *cookie; | |
eb5dc014 RK |
103 | /** @brief Connection rights */ |
104 | rights_type rights; | |
0126692c | 105 | /** @brief Next connection */ |
106 | struct conn *next; | |
dd9af5cb RK |
107 | /** @brief True if pending rescan had 'wait' set */ |
108 | int rescan_wait; | |
ddbf05c8 RK |
109 | /** @brief Playlist that this connection locks */ |
110 | const char *locked_playlist; | |
111 | /** @brief When that playlist was locked */ | |
112 | time_t locked_when; | |
f65f5aff RK |
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 */ | |
118 | void *body_u; | |
119 | /** @brief Accumulating body */ | |
120 | struct vector body[1]; | |
b0116b5c RK |
121 | |
122 | /** @brief Nonzero if an active RTP request exists */ | |
123 | int rtp_requested; | |
124 | ||
125 | /** @brief RTP destination (if @ref rtp_requested is nonzero) */ | |
126 | struct sockaddr_storage rtp_destination; | |
460b9539 | 127 | }; |
128 | ||
0126692c | 129 | /** @brief Linked list of connections */ |
130 | static struct conn *connections; | |
131 | ||
460b9539 | 132 | static int reader_callback(ev_source *ev, |
133 | ev_reader *reader, | |
460b9539 | 134 | void *ptr, |
135 | size_t bytes, | |
136 | int eof, | |
137 | void *u); | |
f65f5aff RK |
138 | static int c_playlist_set_body(struct conn *c, |
139 | char **body, | |
140 | int nbody, | |
141 | void *u); | |
142 | static int fetch_body(struct conn *c, | |
143 | body_callback_type body_callback, | |
144 | void *u); | |
145 | static int body_line(struct conn *c, char *line); | |
146 | static int command(struct conn *c, char *line); | |
460b9539 | 147 | |
148 | static const char *noyes[] = { "no", "yes" }; | |
149 | ||
b0116b5c RK |
150 | /** @brief Remove a connection from the connection list |
151 | * | |
152 | * This is a good place for cleaning things up when connections are closed for | |
153 | * any reason. | |
154 | */ | |
0126692c | 155 | static void remove_connection(struct conn *c) { |
156 | struct conn **cc; | |
157 | ||
b0116b5c RK |
158 | if(c->rtp_requested) { |
159 | rtp_request_cancel(&c->rtp_destination); | |
160 | c->rtp_requested = 0; | |
161 | } | |
0126692c | 162 | for(cc = &connections; *cc && *cc != c; cc = &(*cc)->next) |
163 | ; | |
164 | if(*cc) | |
165 | *cc = c->next; | |
166 | } | |
167 | ||
397ef7bb RK |
168 | /** @brief Called when a connection's writer fails or is shut down |
169 | * | |
170 | * If the connection still has a raeder that is cancelled. | |
171 | */ | |
460b9539 | 172 | static int writer_error(ev_source attribute((unused)) *ev, |
460b9539 | 173 | int errno_value, |
174 | void *u) { | |
175 | struct conn *c = u; | |
176 | ||
8d8b8c1f | 177 | D(("server writer_error S%x %d", c->tag, errno_value)); |
460b9539 | 178 | if(errno_value == 0) { |
179 | /* writer is done */ | |
8d8b8c1f | 180 | D(("S%x writer completed", c->tag)); |
460b9539 | 181 | } else { |
182 | if(errno_value != EPIPE) | |
2e9ba080 | 183 | disorder_error(errno_value, "S%x write error on socket", c->tag); |
38b8221f | 184 | if(c->r) { |
8d8b8c1f | 185 | D(("cancel reader")); |
38b8221f RK |
186 | ev_reader_cancel(c->r); |
187 | c->r = 0; | |
188 | } | |
8d8b8c1f | 189 | D(("done cancel reader")); |
460b9539 | 190 | } |
38b8221f | 191 | c->w = 0; |
75d64210 | 192 | ev_report(ev); |
0126692c | 193 | remove_connection(c); |
460b9539 | 194 | return 0; |
195 | } | |
196 | ||
397ef7bb RK |
197 | /** @brief Called when a conncetion's reader fails or is shut down |
198 | * | |
199 | * If connection still has a writer then it is closed. | |
200 | */ | |
460b9539 | 201 | static int reader_error(ev_source attribute((unused)) *ev, |
460b9539 | 202 | int errno_value, |
203 | void *u) { | |
204 | struct conn *c = u; | |
205 | ||
8d8b8c1f | 206 | D(("server reader_error S%x %d", c->tag, errno_value)); |
2e9ba080 | 207 | disorder_error(errno_value, "S%x read error on socket", c->tag); |
38b8221f RK |
208 | if(c->w) |
209 | ev_writer_close(c->w); | |
210 | c->w = 0; | |
211 | c->r = 0; | |
768d7355 | 212 | ev_report(ev); |
0126692c | 213 | remove_connection(c); |
460b9539 | 214 | return 0; |
215 | } | |
216 | ||
460b9539 | 217 | static int c_disable(struct conn *c, char **vec, int nvec) { |
218 | if(nvec == 0) | |
9439cdab | 219 | disable_playing(c->who, c->ev); |
460b9539 | 220 | else if(nvec == 1 && !strcmp(vec[0], "now")) |
9439cdab | 221 | disable_playing(c->who, c->ev); |
460b9539 | 222 | else { |
223 | sink_writes(ev_writer_sink(c->w), "550 invalid argument\n"); | |
224 | return 1; /* completed */ | |
225 | } | |
226 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
227 | return 1; /* completed */ | |
228 | } | |
229 | ||
230 | static int c_enable(struct conn *c, | |
231 | char attribute((unused)) **vec, | |
232 | int attribute((unused)) nvec) { | |
233 | enable_playing(c->who, c->ev); | |
234 | /* Enable implicitly unpauses if there is nothing playing */ | |
235 | if(paused && !playing) resume_playing(c->who); | |
236 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
237 | return 1; /* completed */ | |
238 | } | |
239 | ||
240 | static int c_enabled(struct conn *c, | |
241 | char attribute((unused)) **vec, | |
242 | int attribute((unused)) nvec) { | |
243 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]); | |
244 | return 1; /* completed */ | |
245 | } | |
246 | ||
247 | static int c_play(struct conn *c, char **vec, | |
248 | int attribute((unused)) nvec) { | |
249 | const char *track; | |
250 | struct queue_entry *q; | |
251 | ||
252 | if(!trackdb_exists(vec[0])) { | |
253 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
254 | return 1; | |
255 | } | |
256 | if(!(track = trackdb_resolve(vec[0]))) { | |
257 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
258 | return 1; | |
259 | } | |
7a853280 | 260 | q = queue_add(track, c->who, WHERE_BEFORE_RANDOM, NULL, origin_picked); |
460b9539 | 261 | queue_write(); |
81e440ce | 262 | sink_printf(ev_writer_sink(c->w), "252 %s\n", q->id); |
7a853280 RK |
263 | /* We make sure the track at the head of the queue is prepared, just in case |
264 | * we added it. We could be more subtle but prepare() will ensure we don't | |
265 | * prepare the same track twice so there's no point. */ | |
266 | if(qhead.next != &qhead) | |
267 | prepare(c->ev, qhead.next); | |
460b9539 | 268 | /* If the queue was empty but we are for some reason paused then |
269 | * unpause. */ | |
270 | if(!playing) resume_playing(0); | |
271 | play(c->ev); | |
272 | return 1; /* completed */ | |
273 | } | |
274 | ||
7a853280 RK |
275 | static int c_playafter(struct conn *c, char **vec, |
276 | int attribute((unused)) nvec) { | |
277 | const char *track; | |
278 | struct queue_entry *q; | |
279 | const char *afterme = vec[0]; | |
280 | ||
281 | for(int n = 1; n < nvec; ++n) { | |
282 | if(!trackdb_exists(vec[n])) { | |
283 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
284 | return 1; | |
285 | } | |
286 | if(!(track = trackdb_resolve(vec[n]))) { | |
287 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
288 | return 1; | |
289 | } | |
290 | q = queue_add(track, c->who, WHERE_AFTER, afterme, origin_picked); | |
291 | if(!q) { | |
292 | sink_printf(ev_writer_sink(c->w), "550 No such ID\n"); | |
293 | return 1; | |
294 | } | |
2e9ba080 | 295 | disorder_info("added %s as %s after %s", track, q->id, afterme); |
7a853280 RK |
296 | afterme = q->id; |
297 | } | |
298 | queue_write(); | |
299 | sink_printf(ev_writer_sink(c->w), "252 OK\n"); | |
300 | /* We make sure the track at the head of the queue is prepared, just in case | |
301 | * we added it. We could be more subtle but prepare() will ensure we don't | |
302 | * prepare the same track twice so there's no point. */ | |
303 | if(qhead.next != &qhead) { | |
304 | prepare(c->ev, qhead.next); | |
2e9ba080 | 305 | disorder_info("prepared %s", qhead.next->id); |
7a853280 RK |
306 | } |
307 | /* If the queue was empty but we are for some reason paused then | |
308 | * unpause. */ | |
309 | if(!playing) | |
310 | resume_playing(0); | |
311 | play(c->ev); | |
312 | return 1; /* completed */ | |
313 | } | |
314 | ||
460b9539 | 315 | static int c_remove(struct conn *c, char **vec, |
316 | int attribute((unused)) nvec) { | |
317 | struct queue_entry *q; | |
318 | ||
319 | if(!(q = queue_find(vec[0]))) { | |
320 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
321 | return 1; | |
322 | } | |
938d8157 | 323 | if(!right_removable(c->rights, c->who, q)) { |
2e9ba080 | 324 | disorder_error(0, "%s attempted remove but lacks required rights", c->who); |
eb5dc014 | 325 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 326 | "510 Not authorized to remove that track\n"); |
eb5dc014 | 327 | return 1; |
460b9539 | 328 | } |
329 | queue_remove(q, c->who); | |
330 | /* De-prepare the track. */ | |
331 | abandon(c->ev, q); | |
49a773eb RK |
332 | /* See about adding a new random track */ |
333 | add_random_track(c->ev); | |
460b9539 | 334 | /* Prepare whatever the next head track is. */ |
335 | if(qhead.next != &qhead) | |
336 | prepare(c->ev, qhead.next); | |
337 | queue_write(); | |
338 | sink_writes(ev_writer_sink(c->w), "250 removed\n"); | |
339 | return 1; /* completed */ | |
340 | } | |
341 | ||
342 | static int c_scratch(struct conn *c, | |
343 | char **vec, | |
344 | int nvec) { | |
345 | if(!playing) { | |
346 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
347 | return 1; /* completed */ | |
348 | } | |
eb5dc014 RK |
349 | /* TODO there is a bug here: if we specify an ID but it's not the currently |
350 | * playing track then you will get 550 if you weren't authorized to scratch | |
351 | * the currently playing track. */ | |
938d8157 | 352 | if(!right_scratchable(c->rights, c->who, playing)) { |
2e9ba080 | 353 | disorder_error(0, "%s attempted scratch but lacks required rights", c->who); |
eb5dc014 | 354 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 355 | "510 Not authorized to scratch that track\n"); |
eb5dc014 | 356 | return 1; |
460b9539 | 357 | } |
358 | scratch(c->who, nvec == 1 ? vec[0] : 0); | |
359 | /* If you scratch an unpaused track then it is automatically unpaused */ | |
360 | resume_playing(0); | |
361 | sink_writes(ev_writer_sink(c->w), "250 scratched\n"); | |
362 | return 1; /* completed */ | |
363 | } | |
364 | ||
365 | static int c_pause(struct conn *c, | |
366 | char attribute((unused)) **vec, | |
367 | int attribute((unused)) nvec) { | |
368 | if(!playing) { | |
369 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
370 | return 1; /* completed */ | |
371 | } | |
372 | if(paused) { | |
373 | sink_writes(ev_writer_sink(c->w), "250 already paused\n"); | |
374 | return 1; /* completed */ | |
375 | } | |
376 | if(pause_playing(c->who) < 0) | |
377 | sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n"); | |
378 | else | |
379 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
380 | return 1; | |
381 | } | |
382 | ||
383 | static int c_resume(struct conn *c, | |
384 | char attribute((unused)) **vec, | |
385 | int attribute((unused)) nvec) { | |
386 | if(!paused) { | |
387 | sink_writes(ev_writer_sink(c->w), "250 not paused\n"); | |
388 | return 1; /* completed */ | |
389 | } | |
390 | resume_playing(c->who); | |
391 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
392 | return 1; | |
393 | } | |
394 | ||
395 | static int c_shutdown(struct conn *c, | |
396 | char attribute((unused)) **vec, | |
397 | int attribute((unused)) nvec) { | |
2e9ba080 | 398 | disorder_info("S%x shut down by %s", c->tag, c->who); |
460b9539 | 399 | sink_writes(ev_writer_sink(c->w), "250 shutting down\n"); |
400 | ev_writer_flush(c->w); | |
401 | quit(c->ev); | |
402 | } | |
403 | ||
404 | static int c_reconfigure(struct conn *c, | |
405 | char attribute((unused)) **vec, | |
406 | int attribute((unused)) nvec) { | |
2e9ba080 | 407 | disorder_info("S%x reconfigure by %s", c->tag, c->who); |
460b9539 | 408 | if(reconfigure(c->ev, 1)) |
409 | sink_writes(ev_writer_sink(c->w), "550 error reading new config\n"); | |
410 | else | |
411 | sink_writes(ev_writer_sink(c->w), "250 installed new config\n"); | |
412 | return 1; /* completed */ | |
413 | } | |
414 | ||
dd9af5cb RK |
415 | static void finished_rescan(void *ru) { |
416 | struct conn *const c = ru; | |
417 | ||
418 | sink_writes(ev_writer_sink(c->w), "250 rescan completed\n"); | |
419 | /* Turn this connection back on */ | |
420 | ev_reader_enable(c->r); | |
421 | } | |
422 | ||
423 | static void start_fresh_rescan(void *ru) { | |
424 | struct conn *const c = ru; | |
425 | ||
426 | if(trackdb_rescan_underway()) { | |
427 | /* Some other waiter beat us to it. However in this case we're happy to | |
428 | * piggyback; the requirement is that a new rescan be started, not that it | |
429 | * was _our_ rescan. */ | |
430 | if(c->rescan_wait) { | |
431 | /* We block until the rescan completes */ | |
432 | trackdb_add_rescanned(finished_rescan, c); | |
433 | } else { | |
434 | /* We report that the new rescan has started */ | |
435 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
436 | /* Turn this connection back on */ | |
437 | ev_reader_enable(c->r); | |
438 | } | |
439 | } else { | |
440 | /* We are the first connection to get a callback so we must start a | |
441 | * rescan. */ | |
442 | if(c->rescan_wait) { | |
443 | /* We want to block until the new rescan completes */ | |
444 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
445 | } else { | |
446 | /* We can report back immediately */ | |
447 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
448 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
449 | /* Turn this connection back on */ | |
450 | ev_reader_enable(c->r); | |
451 | } | |
452 | } | |
453 | } | |
454 | ||
460b9539 | 455 | static int c_rescan(struct conn *c, |
dd9af5cb RK |
456 | char **vec, |
457 | int nvec) { | |
d867af10 | 458 | int flag_wait = 0, flag_fresh = 0, n; |
dd9af5cb RK |
459 | |
460 | /* Parse flags */ | |
461 | for(n = 0; n < nvec; ++n) { | |
462 | if(!strcmp(vec[n], "wait")) | |
d867af10 | 463 | flag_wait = 1; /* wait for rescan to complete */ |
dd9af5cb RK |
464 | #if 0 |
465 | /* Currently disabled because untested (and hard to test). */ | |
466 | else if(!strcmp(vec[n], "fresh")) | |
d867af10 | 467 | flag_fresh = 1; /* don't piggyback underway rescan */ |
dd9af5cb RK |
468 | #endif |
469 | else { | |
470 | sink_writes(ev_writer_sink(c->w), "550 unknown flag\n"); | |
471 | return 1; /* completed */ | |
472 | } | |
473 | } | |
474 | /* Report what was requested */ | |
2e9ba080 RK |
475 | disorder_info("S%x rescan by %s (%s %s)", c->tag, c->who, |
476 | flag_wait ? "wait" : "", | |
477 | flag_fresh ? "fresh" : ""); | |
dd9af5cb | 478 | if(trackdb_rescan_underway()) { |
d867af10 | 479 | if(flag_fresh) { |
dd9af5cb RK |
480 | /* We want a fresh rescan but there is already one underway. Arrange a |
481 | * callback when it completes and then set off a new one. */ | |
d867af10 | 482 | c->rescan_wait = flag_wait; |
dd9af5cb | 483 | trackdb_add_rescanned(start_fresh_rescan, c); |
d867af10 | 484 | if(flag_wait) |
dd9af5cb RK |
485 | return 0; |
486 | else { | |
487 | sink_writes(ev_writer_sink(c->w), "250 rescan queued\n"); | |
488 | return 1; | |
489 | } | |
490 | } else { | |
491 | /* There's a rescan underway, and it's acceptable to piggyback on it */ | |
d867af10 | 492 | if(flag_wait) { |
dd9af5cb RK |
493 | /* We want to block until completion. */ |
494 | trackdb_add_rescanned(finished_rescan, c); | |
495 | return 0; | |
496 | } else { | |
497 | /* We don't want to block. So we just report that things are in | |
498 | * hand. */ | |
499 | sink_writes(ev_writer_sink(c->w), "250 rescan already underway\n"); | |
500 | return 1; | |
501 | } | |
502 | } | |
503 | } else { | |
504 | /* No rescan is underway. fresh is therefore irrelevant. */ | |
d867af10 | 505 | if(flag_wait) { |
dd9af5cb RK |
506 | /* We want to block until completion */ |
507 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
508 | return 0; | |
509 | } else { | |
510 | /* We don't want to block. */ | |
511 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
512 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
513 | return 1; /* completed */ | |
514 | } | |
515 | } | |
460b9539 | 516 | } |
517 | ||
518 | static int c_version(struct conn *c, | |
519 | char attribute((unused)) **vec, | |
520 | int attribute((unused)) nvec) { | |
521 | /* VERSION had better only use the basic character set */ | |
a05e4467 | 522 | sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_short_version_string); |
460b9539 | 523 | return 1; /* completed */ |
524 | } | |
525 | ||
526 | static int c_playing(struct conn *c, | |
527 | char attribute((unused)) **vec, | |
528 | int attribute((unused)) nvec) { | |
529 | if(playing) { | |
530 | queue_fix_sofar(playing); | |
531 | playing->expected = 0; | |
532 | sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing)); | |
533 | } else | |
534 | sink_printf(ev_writer_sink(c->w), "259 nothing playing\n"); | |
535 | return 1; /* completed */ | |
536 | } | |
537 | ||
b12be54a | 538 | static const char *connection_host(struct conn *c) { |
460b9539 | 539 | union { |
540 | struct sockaddr sa; | |
541 | struct sockaddr_in in; | |
542 | struct sockaddr_in6 in6; | |
543 | } u; | |
544 | socklen_t l; | |
b12be54a | 545 | int n; |
460b9539 | 546 | char host[1024]; |
547 | ||
460b9539 | 548 | /* get connection data */ |
549 | l = sizeof u; | |
550 | if(getpeername(c->fd, &u.sa, &l) < 0) { | |
2e9ba080 | 551 | disorder_error(errno, "S%x error calling getpeername", c->tag); |
b12be54a | 552 | return 0; |
460b9539 | 553 | } |
554 | if(c->l->pf != PF_UNIX) { | |
555 | if((n = getnameinfo(&u.sa, l, | |
556 | host, sizeof host, 0, 0, NI_NUMERICHOST))) { | |
2e9ba080 RK |
557 | disorder_error(0, "S%x error calling getnameinfo: %s", |
558 | c->tag, gai_strerror(n)); | |
b12be54a | 559 | return 0; |
460b9539 | 560 | } |
b12be54a | 561 | return xstrdup(host); |
18e6d6e6 | 562 | } else |
b12be54a RK |
563 | return "local"; |
564 | } | |
565 | ||
566 | static int c_user(struct conn *c, | |
567 | char **vec, | |
568 | int attribute((unused)) nvec) { | |
eb5dc014 | 569 | struct kvp *k; |
f0feb22e | 570 | const char *res, *host, *password; |
eb5dc014 | 571 | rights_type rights; |
b12be54a RK |
572 | |
573 | if(c->who) { | |
574 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
575 | return 1; | |
576 | } | |
577 | /* get connection data */ | |
578 | if(!(host = connection_host(c))) { | |
579 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
580 | return 1; | |
581 | } | |
460b9539 | 582 | /* find the user */ |
eb5dc014 | 583 | k = trackdb_getuserinfo(vec[0]); |
f0feb22e | 584 | /* reject nonexistent users */ |
eb5dc014 | 585 | if(!k) { |
2e9ba080 | 586 | disorder_error(0, "S%x unknown user '%s' from %s", c->tag, vec[0], host); |
eb5dc014 RK |
587 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
588 | return 1; | |
589 | } | |
590 | /* reject unconfirmed users */ | |
591 | if(kvp_get(k, "confirmation")) { | |
2e9ba080 RK |
592 | disorder_error(0, "S%x unconfirmed user '%s' from %s", |
593 | c->tag, vec[0], host); | |
eb5dc014 RK |
594 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
595 | return 1; | |
596 | } | |
597 | password = kvp_get(k, "password"); | |
598 | if(!password) password = ""; | |
0f55e905 | 599 | if(parse_rights(kvp_get(k, "rights"), &rights, 1)) { |
2e9ba080 | 600 | disorder_error(0, "error parsing rights for %s", vec[0]); |
18e6d6e6 | 601 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
602 | return 1; | |
603 | } | |
f0feb22e RK |
604 | /* check whether the response is right */ |
605 | res = authhash(c->nonce, sizeof c->nonce, password, | |
637fdea3 | 606 | config->authorization_algorithm); |
de37b640 | 607 | if(wideopen || c->l->privileged || (res && !strcmp(res, vec[1]))) { |
18e6d6e6 | 608 | c->who = vec[0]; |
eb5dc014 | 609 | c->rights = rights; |
18e6d6e6 | 610 | /* currently we only bother logging remote connections */ |
30365519 | 611 | if(strcmp(host, "local")) |
2e9ba080 | 612 | disorder_info("S%x %s connected from %s", c->tag, vec[0], host); |
30365519 | 613 | else |
eb5dc014 | 614 | c->rights |= RIGHT__LOCAL; |
18e6d6e6 | 615 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); |
616 | return 1; | |
460b9539 | 617 | } |
618 | /* oops, response was wrong */ | |
2e9ba080 RK |
619 | disorder_info("S%x authentication failure for %s from %s", |
620 | c->tag, vec[0], host); | |
460b9539 | 621 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
622 | return 1; | |
623 | } | |
624 | ||
625 | static int c_recent(struct conn *c, | |
626 | char attribute((unused)) **vec, | |
627 | int attribute((unused)) nvec) { | |
628 | const struct queue_entry *q; | |
629 | ||
630 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
631 | for(q = phead.next; q != &phead; q = q->next) | |
632 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
633 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
634 | return 1; /* completed */ | |
635 | } | |
636 | ||
637 | static int c_queue(struct conn *c, | |
638 | char attribute((unused)) **vec, | |
639 | int attribute((unused)) nvec) { | |
640 | struct queue_entry *q; | |
641 | time_t when = 0; | |
642 | const char *l; | |
643 | long length; | |
644 | ||
645 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
646 | if(playing_is_enabled() && !paused) { | |
647 | if(playing) { | |
648 | queue_fix_sofar(playing); | |
649 | if((l = trackdb_get(playing->track, "_length")) | |
650 | && (length = atol(l))) { | |
4265e5d3 | 651 | xtime(&when); |
657fdb79 | 652 | when += length - playing->sofar; |
460b9539 | 653 | } |
654 | } else | |
655 | /* Nothing is playing but playing is enabled, so whatever is | |
656 | * first in the queue can be expected to start immediately. */ | |
4265e5d3 | 657 | xtime(&when); |
460b9539 | 658 | } |
659 | for(q = qhead.next; q != &qhead; q = q->next) { | |
660 | /* fill in estimated start time */ | |
661 | q->expected = when; | |
662 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
663 | /* update for next track */ | |
664 | if(when) { | |
665 | if((l = trackdb_get(q->track, "_length")) | |
666 | && (length = atol(l))) | |
657fdb79 | 667 | when += length; |
460b9539 | 668 | else |
669 | when = 0; | |
670 | } | |
671 | } | |
672 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
673 | return 1; /* completed */ | |
674 | } | |
675 | ||
676 | static int output_list(struct conn *c, char **vec) { | |
677 | while(*vec) | |
678 | sink_printf(ev_writer_sink(c->w), "%s\n", *vec++); | |
679 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
680 | return 1; | |
681 | } | |
682 | ||
683 | static int files_dirs(struct conn *c, | |
684 | char **vec, | |
685 | int nvec, | |
686 | enum trackdb_listable what) { | |
a2e9d147 MW |
687 | const char *dir, *re; |
688 | char errstr[RXCERR_LEN]; | |
689 | size_t erroffset; | |
690 | regexp *rec; | |
460b9539 | 691 | char **fvec, *key; |
692 | ||
693 | switch(nvec) { | |
694 | case 0: dir = 0; re = 0; break; | |
695 | case 1: dir = vec[0]; re = 0; break; | |
696 | case 2: dir = vec[0]; re = vec[1]; break; | |
697 | default: abort(); | |
698 | } | |
699 | /* A bit of a bodge to make sure the args don't trample on cache keys */ | |
700 | if(dir && strchr(dir, '\n')) { | |
701 | sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n"); | |
702 | return 1; | |
703 | } | |
704 | if(re && strchr(re, '\n')) { | |
705 | sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n"); | |
706 | return 1; | |
707 | } | |
708 | /* We bother eliminating "" because the web interface is relatively | |
709 | * likely to send it */ | |
710 | if(re && *re) { | |
711 | byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re); | |
712 | fvec = (char **)cache_get(&cache_files_type, key); | |
713 | if(fvec) { | |
714 | /* Got a cache hit, don't store the answer in the cache */ | |
715 | key = 0; | |
716 | ++cache_files_hits; | |
717 | rec = 0; /* quieten compiler */ | |
718 | } else { | |
719 | /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer | |
720 | * in the cache. */ | |
a2e9d147 MW |
721 | if(!(rec = regexp_compile(re, RXF_CASELESS, |
722 | errstr, sizeof(errstr), &erroffset))) { | |
460b9539 | 723 | sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n", |
724 | errstr); | |
725 | return 1; | |
726 | } | |
727 | /* It only counts as a miss if the regexp was valid. */ | |
728 | ++cache_files_misses; | |
729 | } | |
730 | } else { | |
731 | /* No regexp, don't bother caching the result */ | |
732 | rec = 0; | |
733 | key = 0; | |
734 | fvec = 0; | |
735 | } | |
736 | if(!fvec) { | |
737 | /* No cache hit (either because a miss, or because we did not look) so do | |
738 | * the lookup */ | |
739 | if(dir && *dir) | |
740 | fvec = trackdb_list(dir, 0, what, rec); | |
741 | else | |
742 | fvec = trackdb_list(0, 0, what, rec); | |
743 | } | |
744 | if(key) | |
745 | /* Put the answer in the cache */ | |
746 | cache_put(&cache_files_type, key, fvec); | |
747 | sink_writes(ev_writer_sink(c->w), "253 Listing follow\n"); | |
748 | return output_list(c, fvec); | |
749 | } | |
750 | ||
751 | static int c_files(struct conn *c, | |
752 | char **vec, | |
753 | int nvec) { | |
754 | return files_dirs(c, vec, nvec, trackdb_files); | |
755 | } | |
756 | ||
757 | static int c_dirs(struct conn *c, | |
758 | char **vec, | |
759 | int nvec) { | |
760 | return files_dirs(c, vec, nvec, trackdb_directories); | |
761 | } | |
762 | ||
763 | static int c_allfiles(struct conn *c, | |
764 | char **vec, | |
765 | int nvec) { | |
766 | return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files); | |
767 | } | |
768 | ||
769 | static int c_get(struct conn *c, | |
770 | char **vec, | |
771 | int attribute((unused)) nvec) { | |
27ed5a69 | 772 | const char *v, *track; |
460b9539 | 773 | |
27ed5a69 RK |
774 | if(!(track = trackdb_resolve(vec[0]))) { |
775 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
776 | return 1; | |
777 | } | |
778 | if(vec[1][0] != '_' && (v = trackdb_get(track, vec[1]))) | |
7b32e917 | 779 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 780 | else |
fb1bc1f5 | 781 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 782 | return 1; |
783 | } | |
784 | ||
785 | static int c_length(struct conn *c, | |
786 | char **vec, | |
787 | int attribute((unused)) nvec) { | |
788 | const char *track, *v; | |
789 | ||
790 | if(!(track = trackdb_resolve(vec[0]))) { | |
791 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
792 | return 1; | |
793 | } | |
794 | if((v = trackdb_get(track, "_length"))) | |
7b32e917 | 795 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 796 | else |
797 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
798 | return 1; | |
799 | } | |
800 | ||
801 | static int c_set(struct conn *c, | |
802 | char **vec, | |
803 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
804 | const char *track; |
805 | ||
806 | if(!(track = trackdb_resolve(vec[0]))) { | |
807 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
808 | return 1; | |
809 | } | |
810 | if(vec[1][0] != '_' && !trackdb_set(track, vec[1], vec[2])) | |
460b9539 | 811 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
812 | else | |
813 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
814 | return 1; | |
815 | } | |
816 | ||
817 | static int c_prefs(struct conn *c, | |
818 | char **vec, | |
819 | int attribute((unused)) nvec) { | |
820 | struct kvp *k; | |
27ed5a69 | 821 | const char *track; |
460b9539 | 822 | |
27ed5a69 RK |
823 | if(!(track = trackdb_resolve(vec[0]))) { |
824 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
825 | return 1; | |
826 | } | |
827 | k = trackdb_get_all(track); | |
460b9539 | 828 | sink_writes(ev_writer_sink(c->w), "253 prefs follow\n"); |
829 | for(; k; k = k->next) | |
830 | if(k->name[0] != '_') /* omit internal values */ | |
831 | sink_printf(ev_writer_sink(c->w), | |
832 | " %s %s\n", quoteutf8(k->name), quoteutf8(k->value)); | |
833 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
834 | return 1; | |
835 | } | |
836 | ||
837 | static int c_exists(struct conn *c, | |
838 | char **vec, | |
839 | int attribute((unused)) nvec) { | |
27ed5a69 | 840 | /* trackdb_exists() does its own alias checking */ |
460b9539 | 841 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]); |
842 | return 1; | |
843 | } | |
844 | ||
845 | static void search_parse_error(const char *msg, void *u) { | |
846 | *(const char **)u = msg; | |
847 | } | |
848 | ||
849 | static int c_search(struct conn *c, | |
850 | char **vec, | |
851 | int attribute((unused)) nvec) { | |
852 | char **terms, **results; | |
853 | int nterms, nresults, n; | |
854 | const char *e = "unknown error"; | |
855 | ||
856 | /* This is a bit of a bodge. Initially it's there to make the eclient | |
857 | * interface a bit more convenient to add searching to, but it has the more | |
858 | * compelling advantage that if everything uses it, then interpretation of | |
859 | * user-supplied search strings will be the same everywhere. */ | |
860 | if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) { | |
861 | sink_printf(ev_writer_sink(c->w), "550 %s\n", e); | |
862 | } else { | |
863 | results = trackdb_search(terms, nterms, &nresults); | |
864 | sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults); | |
865 | for(n = 0; n < nresults; ++n) | |
866 | sink_printf(ev_writer_sink(c->w), "%s\n", results[n]); | |
867 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
868 | } | |
869 | return 1; | |
870 | } | |
871 | ||
872 | static int c_random_enable(struct conn *c, | |
873 | char attribute((unused)) **vec, | |
874 | int attribute((unused)) nvec) { | |
875 | enable_random(c->who, c->ev); | |
876 | /* Enable implicitly unpauses if there is nothing playing */ | |
877 | if(paused && !playing) resume_playing(c->who); | |
878 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
879 | return 1; /* completed */ | |
880 | } | |
881 | ||
882 | static int c_random_disable(struct conn *c, | |
883 | char attribute((unused)) **vec, | |
884 | int attribute((unused)) nvec) { | |
9439cdab | 885 | disable_random(c->who, c->ev); |
460b9539 | 886 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
887 | return 1; /* completed */ | |
888 | } | |
889 | ||
890 | static int c_random_enabled(struct conn *c, | |
891 | char attribute((unused)) **vec, | |
892 | int attribute((unused)) nvec) { | |
893 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]); | |
894 | return 1; /* completed */ | |
895 | } | |
896 | ||
d6dde5a3 RK |
897 | static void got_stats(char *stats, void *u) { |
898 | struct conn *const c = u; | |
899 | ||
900 | sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats); | |
901 | /* Now we can start processing commands again */ | |
902 | ev_reader_enable(c->r); | |
903 | } | |
904 | ||
460b9539 | 905 | static int c_stats(struct conn *c, |
906 | char attribute((unused)) **vec, | |
907 | int attribute((unused)) nvec) { | |
d6dde5a3 RK |
908 | trackdb_stats_subprocess(c->ev, got_stats, c); |
909 | return 0; /* not yet complete */ | |
460b9539 | 910 | } |
911 | ||
912 | static int c_volume(struct conn *c, | |
913 | char **vec, | |
914 | int nvec) { | |
915 | int l, r, set; | |
916 | char lb[32], rb[32]; | |
eb5dc014 | 917 | rights_type rights; |
460b9539 | 918 | |
919 | switch(nvec) { | |
920 | case 0: | |
921 | set = 0; | |
922 | break; | |
923 | case 1: | |
924 | l = r = atoi(vec[0]); | |
925 | set = 1; | |
926 | break; | |
927 | case 2: | |
928 | l = atoi(vec[0]); | |
929 | r = atoi(vec[1]); | |
930 | set = 1; | |
931 | break; | |
932 | default: | |
933 | abort(); | |
934 | } | |
eb5dc014 RK |
935 | rights = set ? RIGHT_VOLUME : RIGHT_READ; |
936 | if(!(c->rights & rights)) { | |
2e9ba080 RK |
937 | disorder_error(0, "%s attempted to set volume but lacks required rights", |
938 | c->who); | |
b4a80f69 | 939 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
eb5dc014 RK |
940 | return 1; |
941 | } | |
b50cfb8a | 942 | if(!api || !api->set_volume) { |
460b9539 | 943 | sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n"); |
b50cfb8a RK |
944 | return 1; |
945 | } | |
e4d0463f | 946 | (set ? api->set_volume : api->get_volume)(&l, &r); |
b50cfb8a RK |
947 | sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r); |
948 | if(l != volume_left || r != volume_right) { | |
949 | volume_left = l; | |
950 | volume_right = r; | |
951 | snprintf(lb, sizeof lb, "%d", l); | |
952 | snprintf(rb, sizeof rb, "%d", r); | |
953 | eventlog("volume", lb, rb, (char *)0); | |
460b9539 | 954 | } |
955 | return 1; | |
956 | } | |
957 | ||
397ef7bb RK |
958 | /** @brief Called when data arrives on a log connection |
959 | * | |
960 | * We just discard all such data. The client may occasionally send data as a | |
961 | * keepalive. | |
962 | */ | |
963 | static int logging_reader_callback(ev_source attribute((unused)) *ev, | |
460b9539 | 964 | ev_reader *reader, |
397ef7bb | 965 | void attribute((unused)) *ptr, |
460b9539 | 966 | size_t bytes, |
397ef7bb RK |
967 | int attribute((unused)) eof, |
968 | void attribute((unused)) *u) { | |
460b9539 | 969 | struct conn *c = u; |
970 | ||
397ef7bb RK |
971 | ev_reader_consume(reader, bytes); |
972 | if(eof) { | |
973 | /* Oops, that's all for now */ | |
8d8b8c1f | 974 | D(("logging reader eof")); |
397ef7bb | 975 | if(c->w) { |
8d8b8c1f | 976 | D(("close writer")); |
397ef7bb RK |
977 | ev_writer_close(c->w); |
978 | c->w = 0; | |
979 | } | |
980 | c->r = 0; | |
0126692c | 981 | remove_connection(c); |
f6033c46 | 982 | } |
397ef7bb | 983 | return 0; |
460b9539 | 984 | } |
985 | ||
986 | static void logclient(const char *msg, void *user) { | |
987 | struct conn *c = user; | |
988 | ||
f6033c46 RK |
989 | if(!c->w || !c->r) { |
990 | /* This connection has gone up in smoke for some reason */ | |
991 | eventlog_remove(c->lo); | |
ad492e00 | 992 | c->lo = 0; |
f6033c46 RK |
993 | return; |
994 | } | |
75e7b7c3 RK |
995 | /* user_* messages are restricted */ |
996 | if(!strncmp(msg, "user_", 5)) { | |
58d2aad2 RK |
997 | /* They are only sent to admin users */ |
998 | if(!(c->rights & RIGHT_ADMIN)) | |
999 | return; | |
1000 | /* They are not sent over TCP connections unless remote user-management is | |
1001 | * enabled */ | |
1002 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) | |
1003 | return; | |
1004 | } | |
460b9539 | 1005 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n", |
4265e5d3 | 1006 | (uintmax_t)xtime(0), msg); |
460b9539 | 1007 | } |
1008 | ||
1009 | static int c_log(struct conn *c, | |
1010 | char attribute((unused)) **vec, | |
1011 | int attribute((unused)) nvec) { | |
1012 | time_t now; | |
1013 | ||
1014 | sink_writes(ev_writer_sink(c->w), "254 OK\n"); | |
1015 | /* pump out initial state */ | |
4265e5d3 | 1016 | xtime(&now); |
460b9539 | 1017 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", |
1018 | (uintmax_t)now, | |
1019 | playing_is_enabled() ? "enable_play" : "disable_play"); | |
1020 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
1021 | (uintmax_t)now, | |
1022 | random_is_enabled() ? "enable_random" : "disable_random"); | |
1023 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
1024 | (uintmax_t)now, | |
1025 | paused ? "pause" : "resume"); | |
5abe307a RK |
1026 | if(playing) |
1027 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n", | |
1028 | (uintmax_t)now); | |
df44d69b RK |
1029 | /* Initial volume */ |
1030 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n", | |
1031 | (uintmax_t)now, volume_left, volume_right); | |
460b9539 | 1032 | c->lo = xmalloc(sizeof *c->lo); |
1033 | c->lo->fn = logclient; | |
1034 | c->lo->user = c; | |
1035 | eventlog_add(c->lo); | |
1036 | c->reader = logging_reader_callback; | |
1037 | return 0; | |
1038 | } | |
1039 | ||
eb5dc014 RK |
1040 | /** @brief Test whether a move is allowed |
1041 | * @param c Connection | |
1042 | * @param qs List of IDs on queue | |
1043 | * @param nqs Number of IDs | |
1044 | * @return 0 if move is prohibited, non-0 if it is allowed | |
1045 | */ | |
1046 | static int has_move_rights(struct conn *c, struct queue_entry **qs, int nqs) { | |
eb5dc014 RK |
1047 | for(; nqs > 0; ++qs, --nqs) { |
1048 | struct queue_entry *const q = *qs; | |
1049 | ||
938d8157 | 1050 | if(!right_movable(c->rights, c->who, q)) |
1051 | return 0; | |
eb5dc014 | 1052 | } |
938d8157 | 1053 | return 1; |
eb5dc014 RK |
1054 | } |
1055 | ||
460b9539 | 1056 | static int c_move(struct conn *c, |
1057 | char **vec, | |
1058 | int attribute((unused)) nvec) { | |
1059 | struct queue_entry *q; | |
1060 | int n; | |
1061 | ||
460b9539 | 1062 | if(!(q = queue_find(vec[0]))) { |
1063 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1064 | return 1; | |
1065 | } | |
eb5dc014 | 1066 | if(!has_move_rights(c, &q, 1)) { |
2e9ba080 | 1067 | disorder_error(0, "%s attempted move but lacks required rights", c->who); |
eb5dc014 | 1068 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1069 | "510 Not authorized to move that track\n"); |
eb5dc014 RK |
1070 | return 1; |
1071 | } | |
460b9539 | 1072 | n = queue_move(q, atoi(vec[1]), c->who); |
460b9539 | 1073 | sink_printf(ev_writer_sink(c->w), "252 %d\n", n); |
1074 | /* If we've moved to the head of the queue then prepare the track. */ | |
1075 | if(q == qhead.next) | |
1076 | prepare(c->ev, q); | |
1077 | return 1; | |
1078 | } | |
1079 | ||
1080 | static int c_moveafter(struct conn *c, | |
1081 | char **vec, | |
1082 | int attribute((unused)) nvec) { | |
1083 | struct queue_entry *q, **qs; | |
1084 | int n; | |
1085 | ||
460b9539 | 1086 | if(vec[0][0]) { |
1087 | if(!(q = queue_find(vec[0]))) { | |
1088 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1089 | return 1; | |
1090 | } | |
1091 | } else | |
1092 | q = 0; | |
1093 | ++vec; | |
1094 | --nvec; | |
1095 | qs = xcalloc(nvec, sizeof *qs); | |
1096 | for(n = 0; n < nvec; ++n) | |
1097 | if(!(qs[n] = queue_find(vec[n]))) { | |
1098 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1099 | return 1; | |
1100 | } | |
eb5dc014 | 1101 | if(!has_move_rights(c, qs, nvec)) { |
2e9ba080 RK |
1102 | disorder_error(0, "%s attempted moveafter but lacks required rights", |
1103 | c->who); | |
eb5dc014 | 1104 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1105 | "510 Not authorized to move those tracks\n"); |
eb5dc014 RK |
1106 | return 1; |
1107 | } | |
460b9539 | 1108 | queue_moveafter(q, nvec, qs, c->who); |
460b9539 | 1109 | sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n"); |
1110 | /* If we've moved to the head of the queue then prepare the track. */ | |
1111 | if(q == qhead.next) | |
1112 | prepare(c->ev, q); | |
1113 | return 1; | |
1114 | } | |
1115 | ||
1116 | static int c_part(struct conn *c, | |
1117 | char **vec, | |
1118 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
1119 | const char *track; |
1120 | ||
1121 | if(!(track = trackdb_resolve(vec[0]))) { | |
1122 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1123 | return 1; | |
1124 | } | |
460b9539 | 1125 | sink_printf(ev_writer_sink(c->w), "252 %s\n", |
27ed5a69 | 1126 | quoteutf8(trackdb_getpart(track, vec[1], vec[2]))); |
460b9539 | 1127 | return 1; |
1128 | } | |
1129 | ||
1130 | static int c_resolve(struct conn *c, | |
1131 | char **vec, | |
1132 | int attribute((unused)) nvec) { | |
1133 | const char *track; | |
1134 | ||
1135 | if(!(track = trackdb_resolve(vec[0]))) { | |
1136 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1137 | return 1; | |
1138 | } | |
7b32e917 | 1139 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(track)); |
460b9539 | 1140 | return 1; |
1141 | } | |
1142 | ||
ddbf05c8 RK |
1143 | static int list_response(struct conn *c, |
1144 | const char *reply, | |
1145 | char **list) { | |
1146 | sink_printf(ev_writer_sink(c->w), "253 %s\n", reply); | |
1147 | while(*list) { | |
460b9539 | 1148 | sink_printf(ev_writer_sink(c->w), "%s%s\n", |
ddbf05c8 RK |
1149 | **list == '.' ? "." : "", *list); |
1150 | ++list; | |
460b9539 | 1151 | } |
1152 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1153 | return 1; /* completed */ | |
460b9539 | 1154 | } |
1155 | ||
ddbf05c8 RK |
1156 | static int c_tags(struct conn *c, |
1157 | char attribute((unused)) **vec, | |
1158 | int attribute((unused)) nvec) { | |
1159 | return list_response(c, "Tag list follows", trackdb_alltags()); | |
1160 | } | |
1161 | ||
460b9539 | 1162 | static int c_set_global(struct conn *c, |
1163 | char **vec, | |
1164 | int attribute((unused)) nvec) { | |
f9635e06 RK |
1165 | if(vec[0][0] == '_') { |
1166 | sink_writes(ev_writer_sink(c->w), "550 cannot set internal global preferences\n"); | |
1167 | return 1; | |
1168 | } | |
9439cdab RK |
1169 | /* We special-case the 'magic' preferences here. */ |
1170 | if(!strcmp(vec[0], "playing")) { | |
1171 | (flag_enabled(vec[1]) ? enable_playing : disable_playing)(c->who, c->ev); | |
43386708 | 1172 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
9439cdab RK |
1173 | } else if(!strcmp(vec[0], "random-play")) { |
1174 | (flag_enabled(vec[1]) ? enable_random : disable_random)(c->who, c->ev); | |
43386708 | 1175 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
9439cdab | 1176 | } else { |
2fbc0bd2 | 1177 | if(!trackdb_set_global(vec[0], vec[1], c->who)) |
9439cdab RK |
1178 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
1179 | else | |
1180 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
1181 | } | |
460b9539 | 1182 | return 1; |
1183 | } | |
1184 | ||
1185 | static int c_get_global(struct conn *c, | |
1186 | char **vec, | |
1187 | int attribute((unused)) nvec) { | |
1188 | const char *s = trackdb_get_global(vec[0]); | |
1189 | ||
1190 | if(s) | |
7b32e917 | 1191 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(s)); |
460b9539 | 1192 | else |
fb1bc1f5 | 1193 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 1194 | return 1; |
1195 | } | |
1196 | ||
7858930d | 1197 | static int c_nop(struct conn *c, |
1198 | char attribute((unused)) **vec, | |
1199 | int attribute((unused)) nvec) { | |
1200 | sink_printf(ev_writer_sink(c->w), "250 Quack\n"); | |
1201 | return 1; | |
1202 | } | |
1203 | ||
2a10b70b RK |
1204 | static int c_new(struct conn *c, |
1205 | char **vec, | |
1206 | int nvec) { | |
375d9478 | 1207 | int max; |
d742bb47 | 1208 | char **tracks; |
2a10b70b | 1209 | |
d742bb47 RK |
1210 | if(nvec > 0) |
1211 | max = atoi(vec[0]); | |
1212 | else | |
1213 | max = INT_MAX; | |
1214 | if(max <= 0 || max > config->new_max) | |
1215 | max = config->new_max; | |
1216 | tracks = trackdb_new(0, max); | |
2a10b70b RK |
1217 | sink_printf(ev_writer_sink(c->w), "253 New track list follows\n"); |
1218 | while(*tracks) { | |
1219 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
1220 | **tracks == '.' ? "." : "", *tracks); | |
1221 | ++tracks; | |
1222 | } | |
1223 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1224 | return 1; /* completed */ | |
1225 | ||
1226 | } | |
1227 | ||
ca831831 RK |
1228 | static int c_rtp_address(struct conn *c, |
1229 | char attribute((unused)) **vec, | |
1230 | int attribute((unused)) nvec) { | |
b50cfb8a | 1231 | if(api == &uaudio_rtp) { |
76e72f65 RK |
1232 | char **addr; |
1233 | ||
b0116b5c RK |
1234 | if(!strcmp(config->rtp_mode, "request")) |
1235 | sink_printf(ev_writer_sink(c->w), "252 - -\n"); | |
1236 | else { | |
1237 | netaddress_format(&config->broadcast, NULL, &addr); | |
1238 | sink_printf(ev_writer_sink(c->w), "252 %s %s\n", | |
1239 | quoteutf8(addr[1]), | |
1240 | quoteutf8(addr[2])); | |
1241 | } | |
ca831831 RK |
1242 | } else |
1243 | sink_writes(ev_writer_sink(c->w), "550 No RTP\n"); | |
1244 | return 1; | |
1245 | } | |
b12be54a | 1246 | |
b0116b5c RK |
1247 | static int c_rtp_cancel(struct conn *c, |
1248 | char attribute((unused)) **vec, | |
1249 | int attribute((unused)) nvec) { | |
1250 | if(!c->rtp_requested) { | |
1251 | sink_writes(ev_writer_sink(c->w), "550 No active RTP stream\n"); | |
1252 | return 1; | |
1253 | } | |
1254 | rtp_request_cancel(&c->rtp_destination); | |
1255 | c->rtp_requested = 0; | |
1256 | sink_writes(ev_writer_sink(c->w), "250 Cancelled RTP stream\n"); | |
1257 | return 1; | |
1258 | } | |
1259 | ||
1260 | static int c_rtp_request(struct conn *c, | |
1261 | char **vec, | |
1262 | int attribute((unused)) nvec) { | |
1263 | static const struct addrinfo hints = { | |
1264 | .ai_family = AF_UNSPEC, | |
1265 | .ai_socktype = SOCK_DGRAM, | |
1266 | .ai_protocol = IPPROTO_UDP, | |
1267 | .ai_flags = AI_NUMERICHOST|AI_NUMERICSERV, | |
1268 | }; | |
1269 | struct addrinfo *res; | |
1270 | int rc = getaddrinfo(vec[0], vec[1], &hints, &res); | |
1271 | if(rc) { | |
1272 | disorder_error(0, "%s port %s: %s", | |
1273 | vec[0], vec[1], gai_strerror(rc)); | |
1274 | sink_writes(ev_writer_sink(c->w), "550 Invalid address\n"); | |
1275 | return 1; | |
1276 | } | |
1277 | disorder_info("%s requested RTP stream to %s %s", c->who, vec[0], vec[1]); | |
1278 | /* TODO might be useful to tighten this up to restrict clients to targetting | |
1279 | * themselves only */ | |
1280 | if(c->rtp_requested) { | |
1281 | rtp_request_cancel(&c->rtp_destination); | |
1282 | c->rtp_requested = 0; | |
1283 | } | |
1284 | memcpy(&c->rtp_destination, res->ai_addr, res->ai_addrlen); | |
1285 | freeaddrinfo(res); | |
1286 | rtp_request(&c->rtp_destination); | |
1287 | c->rtp_requested = 1; | |
1288 | sink_writes(ev_writer_sink(c->w), "250 Initiated RTP stream\n"); | |
1289 | // TODO teardown on connection close | |
1290 | return 1; | |
1291 | } | |
1292 | ||
b12be54a RK |
1293 | static int c_cookie(struct conn *c, |
1294 | char **vec, | |
1295 | int attribute((unused)) nvec) { | |
1296 | const char *host; | |
1297 | char *user; | |
eb5dc014 | 1298 | rights_type rights; |
b12be54a RK |
1299 | |
1300 | /* Can't log in twice on the same connection */ | |
1301 | if(c->who) { | |
1302 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
1303 | return 1; | |
1304 | } | |
1305 | /* Get some kind of peer identifcation */ | |
1306 | if(!(host = connection_host(c))) { | |
1307 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1308 | return 1; | |
1309 | } | |
1310 | /* Check the cookie */ | |
eb5dc014 | 1311 | user = verify_cookie(vec[0], &rights); |
b12be54a RK |
1312 | if(!user) { |
1313 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1314 | return 1; | |
1315 | } | |
1316 | /* Log in */ | |
e48c28bb | 1317 | c->who = user; |
b12be54a | 1318 | c->cookie = vec[0]; |
eb5dc014 | 1319 | c->rights = rights; |
30365519 | 1320 | if(strcmp(host, "local")) |
2e9ba080 | 1321 | disorder_info("S%x %s connected with cookie from %s", c->tag, user, host); |
30365519 | 1322 | else |
eb5dc014 | 1323 | c->rights |= RIGHT__LOCAL; |
0227f67d RK |
1324 | /* Response contains username so client knows who they are acting as */ |
1325 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
b12be54a RK |
1326 | return 1; |
1327 | } | |
1328 | ||
1329 | static int c_make_cookie(struct conn *c, | |
1330 | char attribute((unused)) **vec, | |
1331 | int attribute((unused)) nvec) { | |
1332 | const char *cookie = make_cookie(c->who); | |
1333 | ||
1334 | if(cookie) | |
eb5dc014 | 1335 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cookie)); |
b12be54a RK |
1336 | else |
1337 | sink_writes(ev_writer_sink(c->w), "550 Cannot create cookie\n"); | |
1338 | return 1; | |
1339 | } | |
1340 | ||
1341 | static int c_revoke(struct conn *c, | |
1342 | char attribute((unused)) **vec, | |
1343 | int attribute((unused)) nvec) { | |
1344 | if(c->cookie) { | |
1345 | revoke_cookie(c->cookie); | |
1346 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1347 | } else | |
b60ceb3c | 1348 | sink_writes(ev_writer_sink(c->w), "510 Did not log in with cookie\n"); |
b12be54a RK |
1349 | return 1; |
1350 | } | |
1351 | ||
f0feb22e RK |
1352 | static int c_adduser(struct conn *c, |
1353 | char **vec, | |
0f55e905 RK |
1354 | int nvec) { |
1355 | const char *rights; | |
1356 | ||
810b8083 | 1357 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1358 | disorder_error(0, "S%x: remote adduser", c->tag); |
b60ceb3c | 1359 | sink_writes(ev_writer_sink(c->w), "510 Remote user management is disabled\n"); |
810b8083 RK |
1360 | return 1; |
1361 | } | |
0f55e905 RK |
1362 | if(nvec > 2) { |
1363 | rights = vec[2]; | |
1364 | if(parse_rights(vec[2], 0, 1)) { | |
1365 | sink_writes(ev_writer_sink(c->w), "550 Invalid rights list\n"); | |
1366 | return -1; | |
1367 | } | |
1368 | } else | |
1369 | rights = config->default_rights; | |
1370 | if(trackdb_adduser(vec[0], vec[1], rights, | |
ba39faf6 | 1371 | 0/*email*/, 0/*confirmation*/)) |
f0feb22e RK |
1372 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1373 | else | |
1374 | sink_writes(ev_writer_sink(c->w), "250 User created\n"); | |
1375 | return 1; | |
1376 | } | |
1377 | ||
1378 | static int c_deluser(struct conn *c, | |
1379 | char **vec, | |
1380 | int attribute((unused)) nvec) { | |
0126692c | 1381 | struct conn *d; |
1382 | ||
810b8083 | 1383 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1384 | disorder_error(0, "S%x: remote deluser", c->tag); |
b60ceb3c | 1385 | sink_writes(ev_writer_sink(c->w), "510 Remote user management is disabled\n"); |
810b8083 RK |
1386 | return 1; |
1387 | } | |
0126692c | 1388 | if(trackdb_deluser(vec[0])) { |
ba39faf6 | 1389 | sink_writes(ev_writer_sink(c->w), "550 Cannot delete user\n"); |
0126692c | 1390 | return 1; |
1391 | } | |
1392 | /* Zap connections belonging to deleted user */ | |
1393 | for(d = connections; d; d = d->next) | |
1394 | if(!strcmp(d->who, vec[0])) | |
1395 | d->rights = 0; | |
1396 | sink_writes(ev_writer_sink(c->w), "250 User deleted\n"); | |
f0feb22e RK |
1397 | return 1; |
1398 | } | |
1399 | ||
1400 | static int c_edituser(struct conn *c, | |
5df73aeb | 1401 | char **vec, |
f0feb22e | 1402 | int attribute((unused)) nvec) { |
0126692c | 1403 | struct conn *d; |
1404 | ||
810b8083 | 1405 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1406 | disorder_error(0, "S%x: remote edituser", c->tag); |
b60ceb3c | 1407 | sink_writes(ev_writer_sink(c->w), "510 Remote user management is disabled\n"); |
810b8083 RK |
1408 | return 1; |
1409 | } | |
eb5dc014 RK |
1410 | /* RIGHT_ADMIN can do anything; otherwise you can only set your own email |
1411 | * address and password. */ | |
1412 | if((c->rights & RIGHT_ADMIN) | |
5df73aeb RK |
1413 | || (!strcmp(c->who, vec[0]) |
1414 | && (!strcmp(vec[1], "email") | |
1415 | || !strcmp(vec[1], "password")))) { | |
0126692c | 1416 | if(trackdb_edituserinfo(vec[0], vec[1], vec[2])) { |
5df73aeb | 1417 | sink_writes(ev_writer_sink(c->w), "550 Failed to change setting\n"); |
0126692c | 1418 | return 1; |
1419 | } | |
1420 | if(!strcmp(vec[1], "password")) { | |
1421 | /* Zap all connections for this user after a password change */ | |
1422 | for(d = connections; d; d = d->next) | |
1423 | if(!strcmp(d->who, vec[0])) | |
1424 | d->rights = 0; | |
1425 | } else if(!strcmp(vec[1], "rights")) { | |
1426 | /* Update rights for this user */ | |
1427 | rights_type r; | |
1428 | ||
ad492e00 RK |
1429 | if(!parse_rights(vec[2], &r, 1)) { |
1430 | const char *new_rights = rights_string(r); | |
1431 | for(d = connections; d; d = d->next) { | |
1432 | if(!strcmp(d->who, vec[0])) { | |
1433 | /* Update rights */ | |
0126692c | 1434 | d->rights = r; |
ad492e00 RK |
1435 | /* Notify any log connections */ |
1436 | if(d->lo) | |
1437 | sink_printf(ev_writer_sink(d->w), | |
75e7b7c3 | 1438 | "%"PRIxMAX" rights_changed %s\n", |
4265e5d3 | 1439 | (uintmax_t)xtime(0), |
75e7b7c3 | 1440 | quoteutf8(new_rights)); |
ad492e00 RK |
1441 | } |
1442 | } | |
1443 | } | |
0126692c | 1444 | } |
1445 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
834e7c4a | 1446 | } else { |
2e9ba080 RK |
1447 | disorder_error(0, "%s attempted edituser but lacks required rights", |
1448 | c->who); | |
b4a80f69 | 1449 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1450 | } |
f0feb22e RK |
1451 | return 1; |
1452 | } | |
1453 | ||
1454 | static int c_userinfo(struct conn *c, | |
1455 | char attribute((unused)) **vec, | |
1456 | int attribute((unused)) nvec) { | |
5df73aeb RK |
1457 | struct kvp *k; |
1458 | const char *value; | |
eb5dc014 | 1459 | |
39e7dcfb RK |
1460 | /* We allow remote querying of rights so that clients can figure out what |
1461 | * they're allowed to do */ | |
1462 | if(!config->remote_userman | |
1463 | && !(c->rights & RIGHT__LOCAL) | |
1464 | && strcmp(vec[1], "rights")) { | |
2e9ba080 | 1465 | disorder_error(0, "S%x: remote userinfo %s %s", c->tag, vec[0], vec[1]); |
b60ceb3c | 1466 | sink_writes(ev_writer_sink(c->w), "510 Remote user management is disabled\n"); |
810b8083 RK |
1467 | return 1; |
1468 | } | |
eb5dc014 | 1469 | /* RIGHT_ADMIN allows anything; otherwise you can only get your own email |
29f5fbd2 | 1470 | * address and rights list. */ |
eb5dc014 | 1471 | if((c->rights & RIGHT_ADMIN) |
5df73aeb RK |
1472 | || (!strcmp(c->who, vec[0]) |
1473 | && (!strcmp(vec[1], "email") | |
1474 | || !strcmp(vec[1], "rights")))) { | |
1475 | if((k = trackdb_getuserinfo(vec[0]))) | |
1476 | if((value = kvp_get(k, vec[1]))) | |
1477 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(value)); | |
1478 | else | |
1479 | sink_writes(ev_writer_sink(c->w), "555 Not set\n"); | |
1480 | else | |
1481 | sink_writes(ev_writer_sink(c->w), "550 No such user\n"); | |
834e7c4a | 1482 | } else { |
2e9ba080 RK |
1483 | disorder_error(0, "%s attempted userinfo but lacks required rights", |
1484 | c->who); | |
b4a80f69 | 1485 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1486 | } |
f0feb22e RK |
1487 | return 1; |
1488 | } | |
1489 | ||
c3be4f19 RK |
1490 | static int c_users(struct conn *c, |
1491 | char attribute((unused)) **vec, | |
1492 | int attribute((unused)) nvec) { | |
ddbf05c8 | 1493 | return list_response(c, "User list follows", trackdb_listusers()); |
c3be4f19 RK |
1494 | } |
1495 | ||
ba39faf6 RK |
1496 | static int c_register(struct conn *c, |
1497 | char **vec, | |
1498 | int attribute((unused)) nvec) { | |
53710d44 RK |
1499 | char *cs; |
1500 | uint32_t nonce[CONFIRM_SIZE]; | |
1501 | char nonce_str[(32 * CONFIRM_SIZE) / 5 + 1]; | |
1502 | ||
1503 | /* The confirmation string is username/base62(nonce). The confirmation | |
1504 | * process will pick the username back out to identify them but the _whole_ | |
1505 | * string is used as the confirmation string. Base 62 means we used only | |
1506 | * letters and digits, minimizing the chance of the URL being mispasted. */ | |
1507 | gcry_randomize(nonce, sizeof nonce, GCRY_STRONG_RANDOM); | |
1508 | if(basen(nonce, CONFIRM_SIZE, nonce_str, sizeof nonce_str, 62)) { | |
2e9ba080 | 1509 | disorder_error(0, "buffer too small encoding confirmation string"); |
53710d44 RK |
1510 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1511 | } | |
1512 | byte_xasprintf(&cs, "%s/%s", vec[0], nonce_str); | |
ba39faf6 RK |
1513 | if(trackdb_adduser(vec[0], vec[1], config->default_rights, vec[2], cs)) |
1514 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); | |
1515 | else | |
1516 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cs)); | |
1517 | return 1; | |
1518 | } | |
1519 | ||
1520 | static int c_confirm(struct conn *c, | |
1521 | char **vec, | |
1522 | int attribute((unused)) nvec) { | |
ba39faf6 | 1523 | char *user, *sep; |
30365519 | 1524 | rights_type rights; |
1525 | const char *host; | |
ba39faf6 | 1526 | |
30365519 | 1527 | /* Get some kind of peer identifcation */ |
1528 | if(!(host = connection_host(c))) { | |
1529 | sink_writes(ev_writer_sink(c->w), "530 Authentication failure\n"); | |
1530 | return 1; | |
1531 | } | |
53710d44 RK |
1532 | /* Picking the LAST / means we don't (here) rule out slashes in usernames. */ |
1533 | if(!(sep = strrchr(vec[0], '/'))) { | |
ba39faf6 RK |
1534 | sink_writes(ev_writer_sink(c->w), "550 Malformed confirmation string\n"); |
1535 | return 1; | |
1536 | } | |
53710d44 | 1537 | user = xstrndup(vec[0], sep - vec[0]); |
30365519 | 1538 | if(trackdb_confirm(user, vec[0], &rights)) |
b60ceb3c | 1539 | sink_writes(ev_writer_sink(c->w), "510 Incorrect confirmation string\n"); |
30365519 | 1540 | else { |
1541 | c->who = user; | |
1542 | c->cookie = 0; | |
1543 | c->rights = rights; | |
1544 | if(strcmp(host, "local")) | |
2e9ba080 | 1545 | disorder_info("S%x %s confirmed from %s", c->tag, user, host); |
30365519 | 1546 | else |
1547 | c->rights |= RIGHT__LOCAL; | |
1548 | /* Response contains username so client knows who they are acting as */ | |
1549 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
1550 | } | |
ba39faf6 RK |
1551 | return 1; |
1552 | } | |
6207d2f3 | 1553 | |
1554 | static int sent_reminder(ev_source attribute((unused)) *ev, | |
1555 | pid_t attribute((unused)) pid, | |
1556 | int status, | |
1557 | const struct rusage attribute((unused)) *rusage, | |
1558 | void *u) { | |
1559 | struct conn *const c = u; | |
1560 | ||
1561 | /* Tell the client what went down */ | |
1562 | if(!status) { | |
1563 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1564 | } else { | |
2e9ba080 | 1565 | disorder_error(0, "reminder subprocess %s", wstat(status)); |
6207d2f3 | 1566 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1567 | } | |
1568 | /* Re-enable this connection */ | |
1569 | ev_reader_enable(c->r); | |
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | static int c_reminder(struct conn *c, | |
1574 | char **vec, | |
1575 | int attribute((unused)) nvec) { | |
1576 | struct kvp *k; | |
1577 | const char *password, *email, *text, *encoding, *charset, *content_type; | |
1578 | const time_t *last; | |
1579 | time_t now; | |
1580 | pid_t pid; | |
1581 | ||
1582 | static hash *last_reminder; | |
1583 | ||
1584 | if(!config->mail_sender) { | |
2e9ba080 | 1585 | disorder_error(0, "cannot send password reminders because mail_sender not set"); |
6207d2f3 | 1586 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1587 | return 1; | |
1588 | } | |
1589 | if(!(k = trackdb_getuserinfo(vec[0]))) { | |
2e9ba080 | 1590 | disorder_error(0, "reminder for user '%s' who does not exist", vec[0]); |
6207d2f3 | 1591 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1592 | return 1; | |
1593 | } | |
1594 | if(!(email = kvp_get(k, "email")) | |
33e95f03 | 1595 | || !email_valid(email)) { |
2e9ba080 | 1596 | disorder_error(0, "user '%s' has no valid email address", vec[0]); |
6207d2f3 | 1597 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1598 | return 1; | |
1599 | } | |
1600 | if(!(password = kvp_get(k, "password")) | |
1601 | || !*password) { | |
2e9ba080 | 1602 | disorder_error(0, "user '%s' has no password", vec[0]); |
6207d2f3 | 1603 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1604 | return 1; | |
1605 | } | |
1606 | /* Rate-limit reminders. This hash is bounded in size by the number of | |
1607 | * users. If this is actually a problem for anyone then we can periodically | |
1608 | * clean it. */ | |
1609 | if(!last_reminder) | |
1610 | last_reminder = hash_new(sizeof (time_t)); | |
1611 | last = hash_find(last_reminder, vec[0]); | |
4265e5d3 | 1612 | xtime(&now); |
6207d2f3 | 1613 | if(last && now < *last + config->reminder_interval) { |
2e9ba080 | 1614 | disorder_error(0, "sent a password reminder to '%s' too recently", vec[0]); |
6207d2f3 | 1615 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1616 | return 1; | |
1617 | } | |
1618 | /* Send the reminder */ | |
1619 | /* TODO this should be templatized and to some extent merged with | |
1620 | * the code in act_register() */ | |
1621 | byte_xasprintf((char **)&text, | |
1622 | "Someone requested that you be sent a reminder of your DisOrder password.\n" | |
1623 | "Your password is:\n" | |
1624 | "\n" | |
1625 | " %s\n", password); | |
1626 | if(!(text = mime_encode_text(text, &charset, &encoding))) | |
2e9ba080 | 1627 | disorder_fatal(0, "cannot encode email"); |
6207d2f3 | 1628 | byte_xasprintf((char **)&content_type, "text/plain;charset=%s", |
1629 | quote822(charset, 0)); | |
1630 | pid = sendmail_subprocess("", config->mail_sender, email, | |
1631 | "DisOrder password reminder", | |
1632 | encoding, content_type, text); | |
1633 | if(pid < 0) { | |
1634 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1635 | return 1; | |
1636 | } | |
1637 | hash_add(last_reminder, vec[0], &now, HASH_INSERT_OR_REPLACE); | |
2e9ba080 | 1638 | disorder_info("sending a passsword reminder to user '%s'", vec[0]); |
6207d2f3 | 1639 | /* We can only continue when the subprocess finishes */ |
1640 | ev_child(c->ev, pid, 0, sent_reminder, c); | |
1641 | return 0; | |
1642 | } | |
1643 | ||
2b33c4cf RK |
1644 | static int c_schedule_list(struct conn *c, |
1645 | char attribute((unused)) **vec, | |
1646 | int attribute((unused)) nvec) { | |
1647 | char **ids = schedule_list(0); | |
1648 | sink_writes(ev_writer_sink(c->w), "253 ID list follows\n"); | |
1649 | while(*ids) | |
1650 | sink_printf(ev_writer_sink(c->w), "%s\n", *ids++); | |
1651 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1652 | return 1; /* completed */ | |
1653 | } | |
1654 | ||
1655 | static int c_schedule_get(struct conn *c, | |
1656 | char **vec, | |
1657 | int attribute((unused)) nvec) { | |
1658 | struct kvp *actiondata = schedule_get(vec[0]), *k; | |
1659 | ||
1660 | if(!actiondata) { | |
1661 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1662 | return 1; /* completed */ | |
1663 | } | |
1664 | /* Scheduled events are public information. Anyone with RIGHT_READ can see | |
1665 | * them. */ | |
1666 | sink_writes(ev_writer_sink(c->w), "253 Event information follows\n"); | |
1667 | for(k = actiondata; k; k = k->next) | |
1668 | sink_printf(ev_writer_sink(c->w), " %s %s\n", | |
1669 | quoteutf8(k->name), quoteutf8(k->value)); | |
1670 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1671 | return 1; /* completed */ | |
1672 | } | |
1673 | ||
1674 | static int c_schedule_del(struct conn *c, | |
1675 | char **vec, | |
1676 | int attribute((unused)) nvec) { | |
1677 | struct kvp *actiondata = schedule_get(vec[0]); | |
1678 | ||
1679 | if(!actiondata) { | |
1680 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1681 | return 1; /* completed */ | |
1682 | } | |
1683 | /* If you have admin rights you can delete anything. If you don't then you | |
1684 | * can only delete your own scheduled events. */ | |
1685 | if(!(c->rights & RIGHT_ADMIN)) { | |
1686 | const char *who = kvp_get(actiondata, "who"); | |
1687 | ||
1688 | if(!who || !c->who || strcmp(who, c->who)) { | |
b60ceb3c | 1689 | sink_writes(ev_writer_sink(c->w), "510 Not authorized\n"); |
2b33c4cf RK |
1690 | return 1; /* completed */ |
1691 | } | |
1692 | } | |
1693 | if(schedule_del(vec[0])) | |
1694 | sink_writes(ev_writer_sink(c->w), "550 Could not delete scheduled event\n"); | |
1695 | else | |
1696 | sink_writes(ev_writer_sink(c->w), "250 Deleted\n"); | |
1697 | return 1; /* completed */ | |
1698 | } | |
1699 | ||
1700 | static int c_schedule_add(struct conn *c, | |
1701 | char **vec, | |
1702 | int nvec) { | |
1703 | struct kvp *actiondata = 0; | |
067eeb5f | 1704 | const char *id; |
2b33c4cf RK |
1705 | |
1706 | /* Standard fields */ | |
1707 | kvp_set(&actiondata, "who", c->who); | |
1708 | kvp_set(&actiondata, "when", vec[0]); | |
1709 | kvp_set(&actiondata, "priority", vec[1]); | |
1710 | kvp_set(&actiondata, "action", vec[2]); | |
1711 | /* Action-dependent fields */ | |
1712 | if(!strcmp(vec[2], "play")) { | |
1713 | if(nvec != 4) { | |
1714 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1715 | return 1; | |
1716 | } | |
1717 | if(!trackdb_exists(vec[3])) { | |
1718 | sink_writes(ev_writer_sink(c->w), "550 Track is not in database\n"); | |
1719 | return 1; | |
1720 | } | |
1721 | kvp_set(&actiondata, "track", vec[3]); | |
1722 | } else if(!strcmp(vec[2], "set-global")) { | |
1723 | if(nvec < 4 || nvec > 5) { | |
1724 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1725 | return 1; | |
1726 | } | |
1727 | kvp_set(&actiondata, "key", vec[3]); | |
1728 | if(nvec > 4) | |
1729 | kvp_set(&actiondata, "value", vec[4]); | |
1730 | } else { | |
1731 | sink_writes(ev_writer_sink(c->w), "550 Unknown action\n"); | |
1732 | return 1; | |
1733 | } | |
1734 | /* schedule_add() checks user rights */ | |
1735 | id = schedule_add(c->ev, actiondata); | |
1736 | if(!id) | |
1737 | sink_writes(ev_writer_sink(c->w), "550 Cannot add scheduled event\n"); | |
1738 | else | |
1739 | sink_printf(ev_writer_sink(c->w), "252 %s\n", id); | |
1740 | return 1; | |
1741 | } | |
1742 | ||
d42e98ca RK |
1743 | static int c_adopt(struct conn *c, |
1744 | char **vec, | |
1745 | int attribute((unused)) nvec) { | |
1746 | struct queue_entry *q; | |
1747 | ||
1748 | if(!c->who) { | |
1749 | sink_writes(ev_writer_sink(c->w), "550 no identity\n"); | |
1750 | return 1; | |
1751 | } | |
1752 | if(!(q = queue_find(vec[0]))) { | |
1753 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1754 | return 1; | |
1755 | } | |
1756 | if(q->origin != origin_random) { | |
1757 | sink_writes(ev_writer_sink(c->w), "550 not a random track\n"); | |
1758 | return 1; | |
1759 | } | |
1760 | q->origin = origin_adopted; | |
1761 | q->submitter = xstrdup(c->who); | |
1762 | eventlog("adopted", q->id, q->submitter, (char *)0); | |
1763 | queue_write(); | |
1764 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1765 | return 1; | |
1766 | } | |
1767 | ||
ddbf05c8 RK |
1768 | static int playlist_response(struct conn *c, |
1769 | int err) { | |
1770 | switch(err) { | |
1771 | case 0: | |
1772 | assert(!"cannot cope with success"); | |
1773 | case EACCES: | |
b60ceb3c | 1774 | sink_writes(ev_writer_sink(c->w), "510 Access denied\n"); |
ddbf05c8 RK |
1775 | break; |
1776 | case EINVAL: | |
1777 | sink_writes(ev_writer_sink(c->w), "550 Invalid playlist name\n"); | |
1778 | break; | |
1779 | case ENOENT: | |
1780 | sink_writes(ev_writer_sink(c->w), "555 No such playlist\n"); | |
1781 | break; | |
1782 | default: | |
1783 | sink_writes(ev_writer_sink(c->w), "550 Error accessing playlist\n"); | |
1784 | break; | |
1785 | } | |
1786 | return 1; | |
1787 | } | |
1788 | ||
1789 | static int c_playlist_get(struct conn *c, | |
1790 | char **vec, | |
1791 | int attribute((unused)) nvec) { | |
1792 | char **tracks; | |
1793 | int err; | |
1794 | ||
1795 | if(!(err = trackdb_playlist_get(vec[0], c->who, &tracks, 0, 0))) | |
1796 | return list_response(c, "Playlist contents follows", tracks); | |
1797 | else | |
1798 | return playlist_response(c, err); | |
1799 | } | |
1800 | ||
1801 | static int c_playlist_set(struct conn *c, | |
1802 | char **vec, | |
1803 | int attribute((unused)) nvec) { | |
f65f5aff RK |
1804 | return fetch_body(c, c_playlist_set_body, vec[0]); |
1805 | } | |
1806 | ||
1807 | static int c_playlist_set_body(struct conn *c, | |
1808 | char **body, | |
1809 | int nbody, | |
1810 | void *u) { | |
1811 | const char *playlist = u; | |
1812 | int err; | |
1813 | ||
440af55d RK |
1814 | if(!c->locked_playlist |
1815 | || strcmp(playlist, c->locked_playlist)) { | |
1816 | sink_writes(ev_writer_sink(c->w), "550 Playlist is not locked\n"); | |
1817 | return 1; | |
1818 | } | |
f65f5aff RK |
1819 | if(!(err = trackdb_playlist_set(playlist, c->who, |
1820 | body, nbody, 0))) { | |
1821 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
1822 | return 1; | |
1823 | } else | |
1824 | return playlist_response(c, err); | |
ddbf05c8 RK |
1825 | } |
1826 | ||
1827 | static int c_playlist_get_share(struct conn *c, | |
1828 | char **vec, | |
1829 | int attribute((unused)) nvec) { | |
1830 | char *share; | |
1831 | int err; | |
1832 | ||
1833 | if(!(err = trackdb_playlist_get(vec[0], c->who, 0, 0, &share))) { | |
f65f5aff | 1834 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(share)); |
ddbf05c8 RK |
1835 | return 1; |
1836 | } else | |
1837 | return playlist_response(c, err); | |
1838 | } | |
1839 | ||
1840 | static int c_playlist_set_share(struct conn *c, | |
1841 | char **vec, | |
1842 | int attribute((unused)) nvec) { | |
1843 | int err; | |
1844 | ||
1845 | if(!(err = trackdb_playlist_set(vec[0], c->who, 0, 0, vec[1]))) { | |
f65f5aff | 1846 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
ddbf05c8 RK |
1847 | return 1; |
1848 | } else | |
1849 | return playlist_response(c, err); | |
1850 | } | |
1851 | ||
1852 | static int c_playlists(struct conn *c, | |
1853 | char attribute((unused)) **vec, | |
1854 | int attribute((unused)) nvec) { | |
1855 | char **p; | |
1856 | ||
1857 | trackdb_playlist_list(c->who, &p, 0); | |
1858 | return list_response(c, "List of playlists follows", p); | |
1859 | } | |
1860 | ||
1861 | static int c_playlist_delete(struct conn *c, | |
1862 | char **vec, | |
1863 | int attribute((unused)) nvec) { | |
1864 | int err; | |
1865 | ||
1866 | if(!(err = trackdb_playlist_delete(vec[0], c->who))) { | |
f65f5aff | 1867 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
ddbf05c8 RK |
1868 | return 1; |
1869 | } else | |
1870 | return playlist_response(c, err); | |
1871 | } | |
1872 | ||
1873 | static int c_playlist_lock(struct conn *c, | |
1874 | char **vec, | |
1875 | int attribute((unused)) nvec) { | |
1876 | int err; | |
1877 | struct conn *cc; | |
1878 | ||
1879 | /* Check we're allowed to modify this playlist */ | |
1880 | if((err = trackdb_playlist_set(vec[0], c->who, 0, 0, 0))) | |
1881 | return playlist_response(c, err); | |
1882 | /* If we hold a lock don't allow a new one */ | |
1883 | if(c->locked_playlist) { | |
1884 | sink_writes(ev_writer_sink(c->w), "550 Already holding a lock\n"); | |
1885 | return 1; | |
1886 | } | |
1887 | /* See if some other connection locks the same playlist */ | |
1888 | for(cc = connections; cc; cc = cc->next) | |
1889 | if(cc->locked_playlist && !strcmp(cc->locked_playlist, vec[0])) | |
1890 | break; | |
1891 | if(cc) { | |
1892 | /* TODO: implement config->playlist_lock_timeout */ | |
1893 | sink_writes(ev_writer_sink(c->w), "550 Already locked\n"); | |
1894 | return 1; | |
1895 | } | |
1896 | c->locked_playlist = xstrdup(vec[0]); | |
1897 | time(&c->locked_when); | |
1898 | sink_writes(ev_writer_sink(c->w), "250 Acquired lock\n"); | |
1899 | return 1; | |
1900 | } | |
1901 | ||
1902 | static int c_playlist_unlock(struct conn *c, | |
f65f5aff | 1903 | char attribute((unused)) **vec, |
ddbf05c8 RK |
1904 | int attribute((unused)) nvec) { |
1905 | if(!c->locked_playlist) { | |
1906 | sink_writes(ev_writer_sink(c->w), "550 Not holding a lock\n"); | |
1907 | return 1; | |
1908 | } | |
1909 | c->locked_playlist = 0; | |
1910 | sink_writes(ev_writer_sink(c->w), "250 Released lock\n"); | |
1911 | return 1; | |
1912 | } | |
1913 | ||
598b07b7 RK |
1914 | /** @brief Server's definition of a command */ |
1915 | static const struct server_command { | |
eb5dc014 | 1916 | /** @brief Command name */ |
460b9539 | 1917 | const char *name; |
eb5dc014 RK |
1918 | |
1919 | /** @brief Minimum number of arguments */ | |
1920 | int minargs; | |
1921 | ||
1922 | /** @brief Maximum number of arguments */ | |
1923 | int maxargs; | |
1924 | ||
1925 | /** @brief Function to process command */ | |
460b9539 | 1926 | int (*fn)(struct conn *, char **, int); |
eb5dc014 RK |
1927 | |
1928 | /** @brief Rights required to execute command | |
1929 | * | |
1930 | * 0 means that the command can be issued without logging in. If multiple | |
1931 | * bits are listed here any of those rights will do. | |
1932 | */ | |
1933 | rights_type rights; | |
460b9539 | 1934 | } commands[] = { |
a6e44aa2 | 1935 | { "adduser", 2, 3, c_adduser, RIGHT_ADMIN }, |
d42e98ca | 1936 | { "adopt", 1, 1, c_adopt, RIGHT_PLAY }, |
eb5dc014 | 1937 | { "allfiles", 0, 2, c_allfiles, RIGHT_READ }, |
ba39faf6 | 1938 | { "confirm", 1, 1, c_confirm, 0 }, |
b12be54a | 1939 | { "cookie", 1, 1, c_cookie, 0 }, |
a6e44aa2 | 1940 | { "deluser", 1, 1, c_deluser, RIGHT_ADMIN }, |
eb5dc014 RK |
1941 | { "dirs", 0, 2, c_dirs, RIGHT_READ }, |
1942 | { "disable", 0, 1, c_disable, RIGHT_GLOBAL_PREFS }, | |
1943 | { "edituser", 3, 3, c_edituser, RIGHT_ADMIN|RIGHT_USERINFO }, | |
1944 | { "enable", 0, 0, c_enable, RIGHT_GLOBAL_PREFS }, | |
1945 | { "enabled", 0, 0, c_enabled, RIGHT_READ }, | |
1946 | { "exists", 1, 1, c_exists, RIGHT_READ }, | |
1947 | { "files", 0, 2, c_files, RIGHT_READ }, | |
1948 | { "get", 2, 2, c_get, RIGHT_READ }, | |
1949 | { "get-global", 1, 1, c_get_global, RIGHT_READ }, | |
1950 | { "length", 1, 1, c_length, RIGHT_READ }, | |
1951 | { "log", 0, 0, c_log, RIGHT_READ }, | |
1952 | { "make-cookie", 0, 0, c_make_cookie, RIGHT_READ }, | |
1953 | { "move", 2, 2, c_move, RIGHT_MOVE__MASK }, | |
1954 | { "moveafter", 1, INT_MAX, c_moveafter, RIGHT_MOVE__MASK }, | |
1955 | { "new", 0, 1, c_new, RIGHT_READ }, | |
1956 | { "nop", 0, 0, c_nop, 0 }, | |
1957 | { "part", 3, 3, c_part, RIGHT_READ }, | |
1958 | { "pause", 0, 0, c_pause, RIGHT_PAUSE }, | |
1959 | { "play", 1, 1, c_play, RIGHT_PLAY }, | |
7a853280 | 1960 | { "playafter", 2, INT_MAX, c_playafter, RIGHT_PLAY }, |
eb5dc014 | 1961 | { "playing", 0, 0, c_playing, RIGHT_READ }, |
ddbf05c8 | 1962 | { "playlist-delete", 1, 1, c_playlist_delete, RIGHT_PLAY }, |
fc80bbcd RK |
1963 | { "playlist-get", 1, 1, c_playlist_get, RIGHT_READ }, |
1964 | { "playlist-get-share", 1, 1, c_playlist_get_share, RIGHT_READ }, | |
ddbf05c8 RK |
1965 | { "playlist-lock", 1, 1, c_playlist_lock, RIGHT_PLAY }, |
1966 | { "playlist-set", 1, 1, c_playlist_set, RIGHT_PLAY }, | |
1967 | { "playlist-set-share", 2, 2, c_playlist_set_share, RIGHT_PLAY }, | |
1968 | { "playlist-unlock", 0, 0, c_playlist_unlock, RIGHT_PLAY }, | |
fc80bbcd | 1969 | { "playlists", 0, 0, c_playlists, RIGHT_READ }, |
eb5dc014 RK |
1970 | { "prefs", 1, 1, c_prefs, RIGHT_READ }, |
1971 | { "queue", 0, 0, c_queue, RIGHT_READ }, | |
1972 | { "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS }, | |
1973 | { "random-enable", 0, 0, c_random_enable, RIGHT_GLOBAL_PREFS }, | |
1974 | { "random-enabled", 0, 0, c_random_enabled, RIGHT_READ }, | |
1975 | { "recent", 0, 0, c_recent, RIGHT_READ }, | |
1976 | { "reconfigure", 0, 0, c_reconfigure, RIGHT_ADMIN }, | |
a6e44aa2 | 1977 | { "register", 3, 3, c_register, RIGHT_REGISTER }, |
6207d2f3 | 1978 | { "reminder", 1, 1, c_reminder, RIGHT__LOCAL }, |
eb5dc014 | 1979 | { "remove", 1, 1, c_remove, RIGHT_REMOVE__MASK }, |
dd9af5cb | 1980 | { "rescan", 0, INT_MAX, c_rescan, RIGHT_RESCAN }, |
eb5dc014 RK |
1981 | { "resolve", 1, 1, c_resolve, RIGHT_READ }, |
1982 | { "resume", 0, 0, c_resume, RIGHT_PAUSE }, | |
1983 | { "revoke", 0, 0, c_revoke, RIGHT_READ }, | |
1984 | { "rtp-address", 0, 0, c_rtp_address, 0 }, | |
b0116b5c RK |
1985 | { "rtp-cancel", 0, 0, c_rtp_cancel, 0 }, |
1986 | { "rtp-request", 2, 2, c_rtp_request, RIGHT_READ }, | |
2b33c4cf RK |
1987 | { "schedule-add", 3, INT_MAX, c_schedule_add, RIGHT_READ }, |
1988 | { "schedule-del", 1, 1, c_schedule_del, RIGHT_READ }, | |
1989 | { "schedule-get", 1, 1, c_schedule_get, RIGHT_READ }, | |
1990 | { "schedule-list", 0, 0, c_schedule_list, RIGHT_READ }, | |
eb5dc014 RK |
1991 | { "scratch", 0, 1, c_scratch, RIGHT_SCRATCH__MASK }, |
1992 | { "search", 1, 1, c_search, RIGHT_READ }, | |
1993 | { "set", 3, 3, c_set, RIGHT_PREFS, }, | |
1994 | { "set-global", 2, 2, c_set_global, RIGHT_GLOBAL_PREFS }, | |
1995 | { "shutdown", 0, 0, c_shutdown, RIGHT_ADMIN }, | |
1996 | { "stats", 0, 0, c_stats, RIGHT_READ }, | |
1997 | { "tags", 0, 0, c_tags, RIGHT_READ }, | |
1998 | { "unset", 2, 2, c_set, RIGHT_PREFS }, | |
1999 | { "unset-global", 1, 1, c_set_global, RIGHT_GLOBAL_PREFS }, | |
460b9539 | 2000 | { "user", 2, 2, c_user, 0 }, |
eb5dc014 RK |
2001 | { "userinfo", 2, 2, c_userinfo, RIGHT_READ }, |
2002 | { "users", 0, 0, c_users, RIGHT_READ }, | |
2003 | { "version", 0, 0, c_version, RIGHT_READ }, | |
2004 | { "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME } | |
460b9539 | 2005 | }; |
2006 | ||
f65f5aff RK |
2007 | /** @brief Fetch a command body |
2008 | * @param c Connection | |
2009 | * @param body_callback Called with body | |
2010 | * @param u Passed to body_callback | |
2011 | * @return 1 | |
2012 | */ | |
2013 | static int fetch_body(struct conn *c, | |
2014 | body_callback_type body_callback, | |
2015 | void *u) { | |
2016 | assert(c->line_reader == command); | |
2017 | c->line_reader = body_line; | |
2018 | c->body_callback = body_callback; | |
2019 | c->body_u = u; | |
2020 | vector_init(c->body); | |
2021 | return 1; | |
2022 | } | |
2023 | ||
2024 | /** @brief @ref line_reader_type callback for command body lines | |
2025 | * @param c Connection | |
2026 | * @param line Line | |
2027 | * @return 1 if complete, 0 if incomplete | |
2028 | * | |
2029 | * Called from reader_callback(). | |
2030 | */ | |
2031 | static int body_line(struct conn *c, | |
2032 | char *line) { | |
2033 | if(*line == '.') { | |
2034 | ++line; | |
2035 | if(!*line) { | |
2036 | /* That's the lot */ | |
2037 | c->line_reader = command; | |
2038 | vector_terminate(c->body); | |
2039 | return c->body_callback(c, c->body->vec, c->body->nvec, c->body_u); | |
2040 | } | |
2041 | } | |
2042 | vector_append(c->body, xstrdup(line)); | |
2043 | return 1; /* completed */ | |
2044 | } | |
2045 | ||
460b9539 | 2046 | static void command_error(const char *msg, void *u) { |
2047 | struct conn *c = u; | |
2048 | ||
2049 | sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg); | |
2050 | } | |
2051 | ||
f65f5aff RK |
2052 | /** @brief @ref line_reader_type callback for commands |
2053 | * @param c Connection | |
2054 | * @param line Line | |
2055 | * @return 1 if complete, 0 if incomplete | |
2056 | * | |
2057 | * Called from reader_callback(). | |
2058 | */ | |
460b9539 | 2059 | static int command(struct conn *c, char *line) { |
2060 | char **vec; | |
2061 | int nvec, n; | |
2062 | ||
2063 | D(("server command %s", line)); | |
f9635e06 RK |
2064 | /* We force everything into NFC as early as possible */ |
2065 | if(!(line = utf8_compose_canon(line, strlen(line), 0))) { | |
2066 | sink_writes(ev_writer_sink(c->w), "500 cannot normalize command\n"); | |
2067 | return 1; | |
2068 | } | |
460b9539 | 2069 | if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) { |
2070 | sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n"); | |
2071 | return 1; | |
2072 | } | |
2073 | if(nvec == 0) { | |
2074 | sink_writes(ev_writer_sink(c->w), "500 do what?\n"); | |
2075 | return 1; | |
2076 | } | |
ba937f01 | 2077 | if((n = TABLE_FIND(commands, name, vec[0])) < 0) |
460b9539 | 2078 | sink_writes(ev_writer_sink(c->w), "500 unknown command\n"); |
2079 | else { | |
eb5dc014 RK |
2080 | if(commands[n].rights |
2081 | && !(c->rights & commands[n].rights)) { | |
2e9ba080 RK |
2082 | disorder_error(0, "%s attempted %s but lacks required rights", |
2083 | c->who ? c->who : "NULL", | |
834e7c4a | 2084 | commands[n].name); |
b4a80f69 | 2085 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
460b9539 | 2086 | return 1; |
2087 | } | |
2088 | ++vec; | |
2089 | --nvec; | |
2090 | if(nvec < commands[n].minargs) { | |
2091 | sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n"); | |
2092 | return 1; | |
2093 | } | |
2094 | if(nvec > commands[n].maxargs) { | |
2095 | sink_writes(ev_writer_sink(c->w), "500 too many arguments\n"); | |
2096 | return 1; | |
2097 | } | |
2098 | return commands[n].fn(c, vec, nvec); | |
2099 | } | |
2100 | return 1; /* completed */ | |
2101 | } | |
2102 | ||
2103 | /* redirect to the right reader callback for our current state */ | |
2104 | static int redirect_reader_callback(ev_source *ev, | |
2105 | ev_reader *reader, | |
460b9539 | 2106 | void *ptr, |
2107 | size_t bytes, | |
2108 | int eof, | |
2109 | void *u) { | |
2110 | struct conn *c = u; | |
2111 | ||
75d64210 | 2112 | return c->reader(ev, reader, ptr, bytes, eof, u); |
460b9539 | 2113 | } |
2114 | ||
2115 | /* the main command reader */ | |
2116 | static int reader_callback(ev_source attribute((unused)) *ev, | |
2117 | ev_reader *reader, | |
460b9539 | 2118 | void *ptr, |
2119 | size_t bytes, | |
2120 | int eof, | |
2121 | void *u) { | |
2122 | struct conn *c = u; | |
2123 | char *eol; | |
2124 | int complete; | |
2125 | ||
2126 | D(("server reader_callback")); | |
2127 | while((eol = memchr(ptr, '\n', bytes))) { | |
2128 | *eol++ = 0; | |
2129 | ev_reader_consume(reader, eol - (char *)ptr); | |
f65f5aff | 2130 | complete = c->line_reader(c, ptr); /* usually command() */ |
460b9539 | 2131 | bytes -= (eol - (char *)ptr); |
2132 | ptr = eol; | |
2133 | if(!complete) { | |
2134 | /* the command had better have set a new reader callback */ | |
2135 | if(bytes || eof) | |
2136 | /* there are further bytes to read, or we are at eof; arrange for the | |
2137 | * command's reader callback to handle them */ | |
2138 | return ev_reader_incomplete(reader); | |
2139 | /* nothing's going on right now */ | |
2140 | return 0; | |
2141 | } | |
2142 | /* command completed, we can go around and handle the next one */ | |
2143 | } | |
2144 | if(eof) { | |
2145 | if(bytes) | |
2e9ba080 | 2146 | disorder_error(0, "S%x unterminated line", c->tag); |
8d8b8c1f | 2147 | D(("normal reader close")); |
397ef7bb RK |
2148 | c->r = 0; |
2149 | if(c->w) { | |
8d8b8c1f | 2150 | D(("close associated writer")); |
397ef7bb RK |
2151 | ev_writer_close(c->w); |
2152 | c->w = 0; | |
2153 | } | |
0126692c | 2154 | remove_connection(c); |
460b9539 | 2155 | } |
2156 | return 0; | |
2157 | } | |
2158 | ||
2159 | static int listen_callback(ev_source *ev, | |
2160 | int fd, | |
2161 | const struct sockaddr attribute((unused)) *remote, | |
2162 | socklen_t attribute((unused)) rlen, | |
2163 | void *u) { | |
2164 | const struct listener *l = u; | |
2165 | struct conn *c = xmalloc(sizeof *c); | |
2166 | static unsigned tags; | |
2167 | ||
2168 | D(("server listen_callback fd %d (%s)", fd, l->name)); | |
2169 | nonblock(fd); | |
2170 | cloexec(fd); | |
ad492e00 | 2171 | c->next = connections; |
460b9539 | 2172 | c->tag = tags++; |
2173 | c->ev = ev; | |
e8c92ba7 RK |
2174 | c->w = ev_writer_new(ev, fd, writer_error, c, |
2175 | "client writer"); | |
31e2a93e | 2176 | if(!c->w) { |
2e9ba080 | 2177 | disorder_error(0, "ev_writer_new for file inbound connection (fd=%d) failed", |
31e2a93e RK |
2178 | fd); |
2179 | close(fd); | |
2180 | return 0; | |
2181 | } | |
e8c92ba7 RK |
2182 | c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c, |
2183 | "client reader"); | |
31e2a93e RK |
2184 | if(!c->r) |
2185 | /* Main reason for failure is the FD is too big and that will already have | |
2186 | * been handled */ | |
2e9ba080 RK |
2187 | disorder_fatal(0, |
2188 | "ev_reader_new for file inbound connection (fd=%d) failed", | |
2189 | fd); | |
75d64210 | 2190 | ev_tie(c->r, c->w); |
460b9539 | 2191 | c->fd = fd; |
2192 | c->reader = reader_callback; | |
2193 | c->l = l; | |
eb5dc014 | 2194 | c->rights = 0; |
f65f5aff | 2195 | c->line_reader = command; |
ad492e00 | 2196 | connections = c; |
460b9539 | 2197 | gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM); |
7b32e917 RK |
2198 | sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n", |
2199 | 2, | |
b3141726 RK |
2200 | config->authorization_algorithm, |
2201 | hex(c->nonce, sizeof c->nonce)); | |
460b9539 | 2202 | return 0; |
2203 | } | |
2204 | ||
2205 | int server_start(ev_source *ev, int pf, | |
2206 | size_t socklen, const struct sockaddr *sa, | |
de37b640 RK |
2207 | const char *name, |
2208 | int privileged) { | |
460b9539 | 2209 | int fd; |
2210 | struct listener *l = xmalloc(sizeof *l); | |
2211 | static const int one = 1; | |
2212 | ||
de37b640 RK |
2213 | D(("server_init socket %s privileged=%d", name, privileged)); |
2214 | /* Sanity check */ | |
2215 | if(privileged && pf != AF_UNIX) | |
2216 | disorder_fatal(0, "cannot create a privileged listener on a non-local port"); | |
460b9539 | 2217 | fd = xsocket(pf, SOCK_STREAM, 0); |
2218 | xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); | |
2219 | if(bind(fd, sa, socklen) < 0) { | |
2e9ba080 | 2220 | disorder_error(errno, "error binding to %s", name); |
460b9539 | 2221 | return -1; |
2222 | } | |
2223 | xlisten(fd, 128); | |
2224 | nonblock(fd); | |
2225 | cloexec(fd); | |
2226 | l->name = name; | |
2227 | l->pf = pf; | |
de37b640 | 2228 | l->privileged = privileged; |
e8c92ba7 RK |
2229 | if(ev_listen(ev, fd, listen_callback, l, "server listener")) |
2230 | exit(EXIT_FAILURE); | |
2e9ba080 | 2231 | disorder_info("listening on %s", name); |
460b9539 | 2232 | return fd; |
2233 | } | |
2234 | ||
2235 | int server_stop(ev_source *ev, int fd) { | |
2236 | xclose(fd); | |
2237 | return ev_listen_cancel(ev, fd); | |
2238 | } | |
2239 | ||
2240 | /* | |
2241 | Local Variables: | |
2242 | c-basic-offset:2 | |
2243 | comment-column:40 | |
2244 | fill-column:79 | |
2245 | End: | |
2246 | */ |