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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
964e027d | 3 | * Copyright (C) 2004-2008 Richard Kettlewell |
460b9539 | 4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "types.h" | |
23 | ||
24 | #include <pwd.h> | |
25 | #include <sys/types.h> | |
26 | #include <sys/socket.h> | |
27 | #include <sys/time.h> | |
28 | #include <unistd.h> | |
29 | #include <stdlib.h> | |
30 | #include <string.h> | |
31 | #include <errno.h> | |
32 | #include <fcntl.h> | |
33 | #include <gcrypt.h> | |
34 | #include <stddef.h> | |
35 | #include <time.h> | |
36 | #include <limits.h> | |
37 | #include <pcre.h> | |
38 | #include <netdb.h> | |
39 | #include <netinet/in.h> | |
40 | ||
41 | #include "event.h" | |
42 | #include "server.h" | |
43 | #include "syscalls.h" | |
44 | #include "queue.h" | |
f08c0859 | 45 | #include "server-queue.h" |
460b9539 | 46 | #include "play.h" |
47 | #include "log.h" | |
48 | #include "mem.h" | |
49 | #include "state.h" | |
50 | #include "charset.h" | |
51 | #include "split.h" | |
52 | #include "configuration.h" | |
53 | #include "hex.h" | |
5df73aeb | 54 | #include "rights.h" |
460b9539 | 55 | #include "trackdb.h" |
56 | #include "table.h" | |
57 | #include "kvp.h" | |
58 | #include "mixer.h" | |
59 | #include "sink.h" | |
60 | #include "authhash.h" | |
61 | #include "plugin.h" | |
62 | #include "printf.h" | |
63 | #include "trackname.h" | |
64 | #include "eventlog.h" | |
65 | #include "defs.h" | |
66 | #include "cache.h" | |
f9635e06 | 67 | #include "unicode.h" |
b12be54a | 68 | #include "cookies.h" |
fce810c2 | 69 | #include "base64.h" |
6207d2f3 | 70 | #include "hash.h" |
71 | #include "mime.h" | |
72 | #include "sendmail.h" | |
73 | #include "wstat.h" | |
2b33c4cf | 74 | #include "schedule.h" |
460b9539 | 75 | |
76 | #ifndef NONCE_SIZE | |
77 | # define NONCE_SIZE 16 | |
78 | #endif | |
79 | ||
10114017 | 80 | #ifndef CONFIRM_SIZE |
81 | # define CONFIRM_SIZE 10 | |
82 | #endif | |
83 | ||
460b9539 | 84 | int volume_left, volume_right; /* last known volume */ |
85 | ||
18e6d6e6 | 86 | /** @brief Accept all well-formed login attempts |
87 | * | |
88 | * Used in debugging. | |
89 | */ | |
90 | int wideopen; | |
91 | ||
460b9539 | 92 | struct listener { |
93 | const char *name; | |
94 | int pf; | |
95 | }; | |
96 | ||
397ef7bb | 97 | /** @brief One client connection */ |
460b9539 | 98 | struct conn { |
397ef7bb | 99 | /** @brief Read commands from here */ |
460b9539 | 100 | ev_reader *r; |
397ef7bb | 101 | /** @brief Send responses to here */ |
460b9539 | 102 | ev_writer *w; |
397ef7bb | 103 | /** @brief Underlying file descriptor */ |
460b9539 | 104 | int fd; |
397ef7bb | 105 | /** @brief Unique identifier for connection used in log messages */ |
460b9539 | 106 | unsigned tag; |
397ef7bb | 107 | /** @brief Login name or NULL */ |
460b9539 | 108 | char *who; |
397ef7bb | 109 | /** @brief Event loop */ |
460b9539 | 110 | ev_source *ev; |
397ef7bb | 111 | /** @brief Nonce chosen for this connection */ |
460b9539 | 112 | unsigned char nonce[NONCE_SIZE]; |
397ef7bb RK |
113 | /** @brief Current reader callback |
114 | * | |
115 | * We change this depending on whether we're servicing the @b log command | |
116 | */ | |
460b9539 | 117 | ev_reader_callback *reader; |
397ef7bb | 118 | /** @brief Event log output sending to this connection */ |
460b9539 | 119 | struct eventlog_output *lo; |
397ef7bb | 120 | /** @brief Parent listener */ |
460b9539 | 121 | const struct listener *l; |
b12be54a RK |
122 | /** @brief Login cookie or NULL */ |
123 | char *cookie; | |
eb5dc014 RK |
124 | /** @brief Connection rights */ |
125 | rights_type rights; | |
0126692c | 126 | /** @brief Next connection */ |
127 | struct conn *next; | |
dd9af5cb RK |
128 | /** @brief True if pending rescan had 'wait' set */ |
129 | int rescan_wait; | |
460b9539 | 130 | }; |
131 | ||
0126692c | 132 | /** @brief Linked list of connections */ |
133 | static struct conn *connections; | |
134 | ||
460b9539 | 135 | static int reader_callback(ev_source *ev, |
136 | ev_reader *reader, | |
460b9539 | 137 | void *ptr, |
138 | size_t bytes, | |
139 | int eof, | |
140 | void *u); | |
141 | ||
142 | static const char *noyes[] = { "no", "yes" }; | |
143 | ||
0126692c | 144 | /** @brief Remove a connection from the connection list */ |
145 | static void remove_connection(struct conn *c) { | |
146 | struct conn **cc; | |
147 | ||
148 | for(cc = &connections; *cc && *cc != c; cc = &(*cc)->next) | |
149 | ; | |
150 | if(*cc) | |
151 | *cc = c->next; | |
152 | } | |
153 | ||
397ef7bb RK |
154 | /** @brief Called when a connection's writer fails or is shut down |
155 | * | |
156 | * If the connection still has a raeder that is cancelled. | |
157 | */ | |
460b9539 | 158 | static int writer_error(ev_source attribute((unused)) *ev, |
460b9539 | 159 | int errno_value, |
160 | void *u) { | |
161 | struct conn *c = u; | |
162 | ||
8d8b8c1f | 163 | D(("server writer_error S%x %d", c->tag, errno_value)); |
460b9539 | 164 | if(errno_value == 0) { |
165 | /* writer is done */ | |
8d8b8c1f | 166 | D(("S%x writer completed", c->tag)); |
460b9539 | 167 | } else { |
168 | if(errno_value != EPIPE) | |
169 | error(errno_value, "S%x write error on socket", c->tag); | |
38b8221f | 170 | if(c->r) { |
8d8b8c1f | 171 | D(("cancel reader")); |
38b8221f RK |
172 | ev_reader_cancel(c->r); |
173 | c->r = 0; | |
174 | } | |
8d8b8c1f | 175 | D(("done cancel reader")); |
460b9539 | 176 | } |
38b8221f | 177 | c->w = 0; |
75d64210 | 178 | ev_report(ev); |
0126692c | 179 | remove_connection(c); |
460b9539 | 180 | return 0; |
181 | } | |
182 | ||
397ef7bb RK |
183 | /** @brief Called when a conncetion's reader fails or is shut down |
184 | * | |
185 | * If connection still has a writer then it is closed. | |
186 | */ | |
460b9539 | 187 | static int reader_error(ev_source attribute((unused)) *ev, |
460b9539 | 188 | int errno_value, |
189 | void *u) { | |
190 | struct conn *c = u; | |
191 | ||
8d8b8c1f | 192 | D(("server reader_error S%x %d", c->tag, errno_value)); |
1563f6f6 | 193 | error(errno_value, "S%x read error on socket", c->tag); |
38b8221f RK |
194 | if(c->w) |
195 | ev_writer_close(c->w); | |
196 | c->w = 0; | |
197 | c->r = 0; | |
768d7355 | 198 | ev_report(ev); |
0126692c | 199 | remove_connection(c); |
460b9539 | 200 | return 0; |
201 | } | |
202 | ||
460b9539 | 203 | static int c_disable(struct conn *c, char **vec, int nvec) { |
204 | if(nvec == 0) | |
205 | disable_playing(c->who); | |
206 | else if(nvec == 1 && !strcmp(vec[0], "now")) | |
207 | disable_playing(c->who); | |
208 | else { | |
209 | sink_writes(ev_writer_sink(c->w), "550 invalid argument\n"); | |
210 | return 1; /* completed */ | |
211 | } | |
212 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
213 | return 1; /* completed */ | |
214 | } | |
215 | ||
216 | static int c_enable(struct conn *c, | |
217 | char attribute((unused)) **vec, | |
218 | int attribute((unused)) nvec) { | |
219 | enable_playing(c->who, c->ev); | |
220 | /* Enable implicitly unpauses if there is nothing playing */ | |
221 | if(paused && !playing) resume_playing(c->who); | |
222 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
223 | return 1; /* completed */ | |
224 | } | |
225 | ||
226 | static int c_enabled(struct conn *c, | |
227 | char attribute((unused)) **vec, | |
228 | int attribute((unused)) nvec) { | |
229 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]); | |
230 | return 1; /* completed */ | |
231 | } | |
232 | ||
233 | static int c_play(struct conn *c, char **vec, | |
234 | int attribute((unused)) nvec) { | |
235 | const char *track; | |
236 | struct queue_entry *q; | |
237 | ||
238 | if(!trackdb_exists(vec[0])) { | |
239 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
240 | return 1; | |
241 | } | |
242 | if(!(track = trackdb_resolve(vec[0]))) { | |
243 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
244 | return 1; | |
245 | } | |
246 | q = queue_add(track, c->who, WHERE_BEFORE_RANDOM); | |
247 | queue_write(); | |
248 | /* If we added the first track, and something is playing, then prepare the | |
249 | * new track. If nothing is playing then we don't bother as it wouldn't gain | |
250 | * anything. */ | |
251 | if(q == qhead.next && playing) | |
252 | prepare(c->ev, q); | |
81e440ce | 253 | sink_printf(ev_writer_sink(c->w), "252 %s\n", q->id); |
460b9539 | 254 | /* If the queue was empty but we are for some reason paused then |
255 | * unpause. */ | |
256 | if(!playing) resume_playing(0); | |
257 | play(c->ev); | |
258 | return 1; /* completed */ | |
259 | } | |
260 | ||
261 | static int c_remove(struct conn *c, char **vec, | |
262 | int attribute((unused)) nvec) { | |
263 | struct queue_entry *q; | |
264 | ||
265 | if(!(q = queue_find(vec[0]))) { | |
266 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
267 | return 1; | |
268 | } | |
938d8157 | 269 | if(!right_removable(c->rights, c->who, q)) { |
834e7c4a | 270 | error(0, "%s attempted remove but lacks required rights", c->who); |
eb5dc014 | 271 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 272 | "510 Not authorized to remove that track\n"); |
eb5dc014 | 273 | return 1; |
460b9539 | 274 | } |
275 | queue_remove(q, c->who); | |
276 | /* De-prepare the track. */ | |
277 | abandon(c->ev, q); | |
49a773eb RK |
278 | /* See about adding a new random track */ |
279 | add_random_track(c->ev); | |
460b9539 | 280 | /* Prepare whatever the next head track is. */ |
281 | if(qhead.next != &qhead) | |
282 | prepare(c->ev, qhead.next); | |
283 | queue_write(); | |
284 | sink_writes(ev_writer_sink(c->w), "250 removed\n"); | |
285 | return 1; /* completed */ | |
286 | } | |
287 | ||
288 | static int c_scratch(struct conn *c, | |
289 | char **vec, | |
290 | int nvec) { | |
291 | if(!playing) { | |
292 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
293 | return 1; /* completed */ | |
294 | } | |
eb5dc014 RK |
295 | /* TODO there is a bug here: if we specify an ID but it's not the currently |
296 | * playing track then you will get 550 if you weren't authorized to scratch | |
297 | * the currently playing track. */ | |
938d8157 | 298 | if(!right_scratchable(c->rights, c->who, playing)) { |
834e7c4a | 299 | error(0, "%s attempted scratch but lacks required rights", c->who); |
eb5dc014 | 300 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 301 | "510 Not authorized to scratch that track\n"); |
eb5dc014 | 302 | return 1; |
460b9539 | 303 | } |
304 | scratch(c->who, nvec == 1 ? vec[0] : 0); | |
305 | /* If you scratch an unpaused track then it is automatically unpaused */ | |
306 | resume_playing(0); | |
307 | sink_writes(ev_writer_sink(c->w), "250 scratched\n"); | |
308 | return 1; /* completed */ | |
309 | } | |
310 | ||
311 | static int c_pause(struct conn *c, | |
312 | char attribute((unused)) **vec, | |
313 | int attribute((unused)) nvec) { | |
314 | if(!playing) { | |
315 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
316 | return 1; /* completed */ | |
317 | } | |
318 | if(paused) { | |
319 | sink_writes(ev_writer_sink(c->w), "250 already paused\n"); | |
320 | return 1; /* completed */ | |
321 | } | |
322 | if(pause_playing(c->who) < 0) | |
323 | sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n"); | |
324 | else | |
325 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
326 | return 1; | |
327 | } | |
328 | ||
329 | static int c_resume(struct conn *c, | |
330 | char attribute((unused)) **vec, | |
331 | int attribute((unused)) nvec) { | |
332 | if(!paused) { | |
333 | sink_writes(ev_writer_sink(c->w), "250 not paused\n"); | |
334 | return 1; /* completed */ | |
335 | } | |
336 | resume_playing(c->who); | |
337 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
338 | return 1; | |
339 | } | |
340 | ||
341 | static int c_shutdown(struct conn *c, | |
342 | char attribute((unused)) **vec, | |
343 | int attribute((unused)) nvec) { | |
344 | info("S%x shut down by %s", c->tag, c->who); | |
345 | sink_writes(ev_writer_sink(c->w), "250 shutting down\n"); | |
346 | ev_writer_flush(c->w); | |
347 | quit(c->ev); | |
348 | } | |
349 | ||
350 | static int c_reconfigure(struct conn *c, | |
351 | char attribute((unused)) **vec, | |
352 | int attribute((unused)) nvec) { | |
353 | info("S%x reconfigure by %s", c->tag, c->who); | |
354 | if(reconfigure(c->ev, 1)) | |
355 | sink_writes(ev_writer_sink(c->w), "550 error reading new config\n"); | |
356 | else | |
357 | sink_writes(ev_writer_sink(c->w), "250 installed new config\n"); | |
358 | return 1; /* completed */ | |
359 | } | |
360 | ||
dd9af5cb RK |
361 | static void finished_rescan(void *ru) { |
362 | struct conn *const c = ru; | |
363 | ||
364 | sink_writes(ev_writer_sink(c->w), "250 rescan completed\n"); | |
365 | /* Turn this connection back on */ | |
366 | ev_reader_enable(c->r); | |
367 | } | |
368 | ||
369 | static void start_fresh_rescan(void *ru) { | |
370 | struct conn *const c = ru; | |
371 | ||
372 | if(trackdb_rescan_underway()) { | |
373 | /* Some other waiter beat us to it. However in this case we're happy to | |
374 | * piggyback; the requirement is that a new rescan be started, not that it | |
375 | * was _our_ rescan. */ | |
376 | if(c->rescan_wait) { | |
377 | /* We block until the rescan completes */ | |
378 | trackdb_add_rescanned(finished_rescan, c); | |
379 | } else { | |
380 | /* We report that the new rescan has started */ | |
381 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
382 | /* Turn this connection back on */ | |
383 | ev_reader_enable(c->r); | |
384 | } | |
385 | } else { | |
386 | /* We are the first connection to get a callback so we must start a | |
387 | * rescan. */ | |
388 | if(c->rescan_wait) { | |
389 | /* We want to block until the new rescan completes */ | |
390 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
391 | } else { | |
392 | /* We can report back immediately */ | |
393 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
394 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
395 | /* Turn this connection back on */ | |
396 | ev_reader_enable(c->r); | |
397 | } | |
398 | } | |
399 | } | |
400 | ||
460b9539 | 401 | static int c_rescan(struct conn *c, |
dd9af5cb RK |
402 | char **vec, |
403 | int nvec) { | |
404 | int wait = 0, fresh = 0, n; | |
405 | ||
406 | /* Parse flags */ | |
407 | for(n = 0; n < nvec; ++n) { | |
408 | if(!strcmp(vec[n], "wait")) | |
409 | wait = 1; /* wait for rescan to complete */ | |
410 | #if 0 | |
411 | /* Currently disabled because untested (and hard to test). */ | |
412 | else if(!strcmp(vec[n], "fresh")) | |
413 | fresh = 1; /* don't piggyback underway rescan */ | |
414 | #endif | |
415 | else { | |
416 | sink_writes(ev_writer_sink(c->w), "550 unknown flag\n"); | |
417 | return 1; /* completed */ | |
418 | } | |
419 | } | |
420 | /* Report what was requested */ | |
421 | info("S%x rescan by %s (%s %s)", c->tag, c->who, | |
422 | wait ? "wait" : "", | |
423 | fresh ? "fresh" : ""); | |
424 | if(trackdb_rescan_underway()) { | |
425 | if(fresh) { | |
426 | /* We want a fresh rescan but there is already one underway. Arrange a | |
427 | * callback when it completes and then set off a new one. */ | |
428 | c->rescan_wait = wait; | |
429 | trackdb_add_rescanned(start_fresh_rescan, c); | |
430 | if(wait) | |
431 | return 0; | |
432 | else { | |
433 | sink_writes(ev_writer_sink(c->w), "250 rescan queued\n"); | |
434 | return 1; | |
435 | } | |
436 | } else { | |
437 | /* There's a rescan underway, and it's acceptable to piggyback on it */ | |
438 | if(wait) { | |
439 | /* We want to block until completion. */ | |
440 | trackdb_add_rescanned(finished_rescan, c); | |
441 | return 0; | |
442 | } else { | |
443 | /* We don't want to block. So we just report that things are in | |
444 | * hand. */ | |
445 | sink_writes(ev_writer_sink(c->w), "250 rescan already underway\n"); | |
446 | return 1; | |
447 | } | |
448 | } | |
449 | } else { | |
450 | /* No rescan is underway. fresh is therefore irrelevant. */ | |
451 | if(wait) { | |
452 | /* We want to block until completion */ | |
453 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
454 | return 0; | |
455 | } else { | |
456 | /* We don't want to block. */ | |
457 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
458 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
459 | return 1; /* completed */ | |
460 | } | |
461 | } | |
460b9539 | 462 | } |
463 | ||
464 | static int c_version(struct conn *c, | |
465 | char attribute((unused)) **vec, | |
466 | int attribute((unused)) nvec) { | |
467 | /* VERSION had better only use the basic character set */ | |
a05e4467 | 468 | sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_short_version_string); |
460b9539 | 469 | return 1; /* completed */ |
470 | } | |
471 | ||
472 | static int c_playing(struct conn *c, | |
473 | char attribute((unused)) **vec, | |
474 | int attribute((unused)) nvec) { | |
475 | if(playing) { | |
476 | queue_fix_sofar(playing); | |
477 | playing->expected = 0; | |
478 | sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing)); | |
479 | } else | |
480 | sink_printf(ev_writer_sink(c->w), "259 nothing playing\n"); | |
481 | return 1; /* completed */ | |
482 | } | |
483 | ||
b12be54a | 484 | static const char *connection_host(struct conn *c) { |
460b9539 | 485 | union { |
486 | struct sockaddr sa; | |
487 | struct sockaddr_in in; | |
488 | struct sockaddr_in6 in6; | |
489 | } u; | |
490 | socklen_t l; | |
b12be54a | 491 | int n; |
460b9539 | 492 | char host[1024]; |
493 | ||
460b9539 | 494 | /* get connection data */ |
495 | l = sizeof u; | |
496 | if(getpeername(c->fd, &u.sa, &l) < 0) { | |
497 | error(errno, "S%x error calling getpeername", c->tag); | |
b12be54a | 498 | return 0; |
460b9539 | 499 | } |
500 | if(c->l->pf != PF_UNIX) { | |
501 | if((n = getnameinfo(&u.sa, l, | |
502 | host, sizeof host, 0, 0, NI_NUMERICHOST))) { | |
503 | error(0, "S%x error calling getnameinfo: %s", c->tag, gai_strerror(n)); | |
b12be54a | 504 | return 0; |
460b9539 | 505 | } |
b12be54a | 506 | return xstrdup(host); |
18e6d6e6 | 507 | } else |
b12be54a RK |
508 | return "local"; |
509 | } | |
510 | ||
511 | static int c_user(struct conn *c, | |
512 | char **vec, | |
513 | int attribute((unused)) nvec) { | |
eb5dc014 | 514 | struct kvp *k; |
f0feb22e | 515 | const char *res, *host, *password; |
eb5dc014 | 516 | rights_type rights; |
b12be54a RK |
517 | |
518 | if(c->who) { | |
519 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
520 | return 1; | |
521 | } | |
522 | /* get connection data */ | |
523 | if(!(host = connection_host(c))) { | |
524 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
525 | return 1; | |
526 | } | |
460b9539 | 527 | /* find the user */ |
eb5dc014 | 528 | k = trackdb_getuserinfo(vec[0]); |
f0feb22e | 529 | /* reject nonexistent users */ |
eb5dc014 RK |
530 | if(!k) { |
531 | error(0, "S%x unknown user '%s' from %s", c->tag, vec[0], host); | |
532 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); | |
533 | return 1; | |
534 | } | |
535 | /* reject unconfirmed users */ | |
536 | if(kvp_get(k, "confirmation")) { | |
537 | error(0, "S%x unconfirmed user '%s' from %s", c->tag, vec[0], host); | |
538 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); | |
539 | return 1; | |
540 | } | |
541 | password = kvp_get(k, "password"); | |
542 | if(!password) password = ""; | |
0f55e905 | 543 | if(parse_rights(kvp_get(k, "rights"), &rights, 1)) { |
eb5dc014 | 544 | error(0, "error parsing rights for %s", vec[0]); |
18e6d6e6 | 545 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
546 | return 1; | |
547 | } | |
f0feb22e RK |
548 | /* check whether the response is right */ |
549 | res = authhash(c->nonce, sizeof c->nonce, password, | |
637fdea3 | 550 | config->authorization_algorithm); |
18e6d6e6 | 551 | if(wideopen || (res && !strcmp(res, vec[1]))) { |
552 | c->who = vec[0]; | |
eb5dc014 | 553 | c->rights = rights; |
18e6d6e6 | 554 | /* currently we only bother logging remote connections */ |
30365519 | 555 | if(strcmp(host, "local")) |
18e6d6e6 | 556 | info("S%x %s connected from %s", c->tag, vec[0], host); |
30365519 | 557 | else |
eb5dc014 | 558 | c->rights |= RIGHT__LOCAL; |
18e6d6e6 | 559 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); |
560 | return 1; | |
460b9539 | 561 | } |
562 | /* oops, response was wrong */ | |
18e6d6e6 | 563 | info("S%x authentication failure for %s from %s", c->tag, vec[0], host); |
460b9539 | 564 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
565 | return 1; | |
566 | } | |
567 | ||
568 | static int c_recent(struct conn *c, | |
569 | char attribute((unused)) **vec, | |
570 | int attribute((unused)) nvec) { | |
571 | const struct queue_entry *q; | |
572 | ||
573 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
574 | for(q = phead.next; q != &phead; q = q->next) | |
575 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
576 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
577 | return 1; /* completed */ | |
578 | } | |
579 | ||
580 | static int c_queue(struct conn *c, | |
581 | char attribute((unused)) **vec, | |
582 | int attribute((unused)) nvec) { | |
583 | struct queue_entry *q; | |
584 | time_t when = 0; | |
585 | const char *l; | |
586 | long length; | |
587 | ||
588 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
589 | if(playing_is_enabled() && !paused) { | |
590 | if(playing) { | |
591 | queue_fix_sofar(playing); | |
592 | if((l = trackdb_get(playing->track, "_length")) | |
593 | && (length = atol(l))) { | |
594 | time(&when); | |
595 | when += length - playing->sofar + config->gap; | |
596 | } | |
597 | } else | |
598 | /* Nothing is playing but playing is enabled, so whatever is | |
599 | * first in the queue can be expected to start immediately. */ | |
600 | time(&when); | |
601 | } | |
602 | for(q = qhead.next; q != &qhead; q = q->next) { | |
603 | /* fill in estimated start time */ | |
604 | q->expected = when; | |
605 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
606 | /* update for next track */ | |
607 | if(when) { | |
608 | if((l = trackdb_get(q->track, "_length")) | |
609 | && (length = atol(l))) | |
610 | when += length + config->gap; | |
611 | else | |
612 | when = 0; | |
613 | } | |
614 | } | |
615 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
616 | return 1; /* completed */ | |
617 | } | |
618 | ||
619 | static int output_list(struct conn *c, char **vec) { | |
620 | while(*vec) | |
621 | sink_printf(ev_writer_sink(c->w), "%s\n", *vec++); | |
622 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
623 | return 1; | |
624 | } | |
625 | ||
626 | static int files_dirs(struct conn *c, | |
627 | char **vec, | |
628 | int nvec, | |
629 | enum trackdb_listable what) { | |
630 | const char *dir, *re, *errstr; | |
631 | int erroffset; | |
632 | pcre *rec; | |
633 | char **fvec, *key; | |
634 | ||
635 | switch(nvec) { | |
636 | case 0: dir = 0; re = 0; break; | |
637 | case 1: dir = vec[0]; re = 0; break; | |
638 | case 2: dir = vec[0]; re = vec[1]; break; | |
639 | default: abort(); | |
640 | } | |
641 | /* A bit of a bodge to make sure the args don't trample on cache keys */ | |
642 | if(dir && strchr(dir, '\n')) { | |
643 | sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n"); | |
644 | return 1; | |
645 | } | |
646 | if(re && strchr(re, '\n')) { | |
647 | sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n"); | |
648 | return 1; | |
649 | } | |
650 | /* We bother eliminating "" because the web interface is relatively | |
651 | * likely to send it */ | |
652 | if(re && *re) { | |
653 | byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re); | |
654 | fvec = (char **)cache_get(&cache_files_type, key); | |
655 | if(fvec) { | |
656 | /* Got a cache hit, don't store the answer in the cache */ | |
657 | key = 0; | |
658 | ++cache_files_hits; | |
659 | rec = 0; /* quieten compiler */ | |
660 | } else { | |
661 | /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer | |
662 | * in the cache. */ | |
663 | if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8, | |
664 | &errstr, &erroffset, 0))) { | |
665 | sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n", | |
666 | errstr); | |
667 | return 1; | |
668 | } | |
669 | /* It only counts as a miss if the regexp was valid. */ | |
670 | ++cache_files_misses; | |
671 | } | |
672 | } else { | |
673 | /* No regexp, don't bother caching the result */ | |
674 | rec = 0; | |
675 | key = 0; | |
676 | fvec = 0; | |
677 | } | |
678 | if(!fvec) { | |
679 | /* No cache hit (either because a miss, or because we did not look) so do | |
680 | * the lookup */ | |
681 | if(dir && *dir) | |
682 | fvec = trackdb_list(dir, 0, what, rec); | |
683 | else | |
684 | fvec = trackdb_list(0, 0, what, rec); | |
685 | } | |
686 | if(key) | |
687 | /* Put the answer in the cache */ | |
688 | cache_put(&cache_files_type, key, fvec); | |
689 | sink_writes(ev_writer_sink(c->w), "253 Listing follow\n"); | |
690 | return output_list(c, fvec); | |
691 | } | |
692 | ||
693 | static int c_files(struct conn *c, | |
694 | char **vec, | |
695 | int nvec) { | |
696 | return files_dirs(c, vec, nvec, trackdb_files); | |
697 | } | |
698 | ||
699 | static int c_dirs(struct conn *c, | |
700 | char **vec, | |
701 | int nvec) { | |
702 | return files_dirs(c, vec, nvec, trackdb_directories); | |
703 | } | |
704 | ||
705 | static int c_allfiles(struct conn *c, | |
706 | char **vec, | |
707 | int nvec) { | |
708 | return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files); | |
709 | } | |
710 | ||
711 | static int c_get(struct conn *c, | |
712 | char **vec, | |
713 | int attribute((unused)) nvec) { | |
27ed5a69 | 714 | const char *v, *track; |
460b9539 | 715 | |
27ed5a69 RK |
716 | if(!(track = trackdb_resolve(vec[0]))) { |
717 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
718 | return 1; | |
719 | } | |
720 | if(vec[1][0] != '_' && (v = trackdb_get(track, vec[1]))) | |
7b32e917 | 721 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 722 | else |
fb1bc1f5 | 723 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 724 | return 1; |
725 | } | |
726 | ||
727 | static int c_length(struct conn *c, | |
728 | char **vec, | |
729 | int attribute((unused)) nvec) { | |
730 | const char *track, *v; | |
731 | ||
732 | if(!(track = trackdb_resolve(vec[0]))) { | |
733 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
734 | return 1; | |
735 | } | |
736 | if((v = trackdb_get(track, "_length"))) | |
7b32e917 | 737 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 738 | else |
739 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
740 | return 1; | |
741 | } | |
742 | ||
743 | static int c_set(struct conn *c, | |
744 | char **vec, | |
745 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
746 | const char *track; |
747 | ||
748 | if(!(track = trackdb_resolve(vec[0]))) { | |
749 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
750 | return 1; | |
751 | } | |
752 | if(vec[1][0] != '_' && !trackdb_set(track, vec[1], vec[2])) | |
460b9539 | 753 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
754 | else | |
755 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
756 | return 1; | |
757 | } | |
758 | ||
759 | static int c_prefs(struct conn *c, | |
760 | char **vec, | |
761 | int attribute((unused)) nvec) { | |
762 | struct kvp *k; | |
27ed5a69 | 763 | const char *track; |
460b9539 | 764 | |
27ed5a69 RK |
765 | if(!(track = trackdb_resolve(vec[0]))) { |
766 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
767 | return 1; | |
768 | } | |
769 | k = trackdb_get_all(track); | |
460b9539 | 770 | sink_writes(ev_writer_sink(c->w), "253 prefs follow\n"); |
771 | for(; k; k = k->next) | |
772 | if(k->name[0] != '_') /* omit internal values */ | |
773 | sink_printf(ev_writer_sink(c->w), | |
774 | " %s %s\n", quoteutf8(k->name), quoteutf8(k->value)); | |
775 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
776 | return 1; | |
777 | } | |
778 | ||
779 | static int c_exists(struct conn *c, | |
780 | char **vec, | |
781 | int attribute((unused)) nvec) { | |
27ed5a69 | 782 | /* trackdb_exists() does its own alias checking */ |
460b9539 | 783 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]); |
784 | return 1; | |
785 | } | |
786 | ||
787 | static void search_parse_error(const char *msg, void *u) { | |
788 | *(const char **)u = msg; | |
789 | } | |
790 | ||
791 | static int c_search(struct conn *c, | |
792 | char **vec, | |
793 | int attribute((unused)) nvec) { | |
794 | char **terms, **results; | |
795 | int nterms, nresults, n; | |
796 | const char *e = "unknown error"; | |
797 | ||
798 | /* This is a bit of a bodge. Initially it's there to make the eclient | |
799 | * interface a bit more convenient to add searching to, but it has the more | |
800 | * compelling advantage that if everything uses it, then interpretation of | |
801 | * user-supplied search strings will be the same everywhere. */ | |
802 | if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) { | |
803 | sink_printf(ev_writer_sink(c->w), "550 %s\n", e); | |
804 | } else { | |
805 | results = trackdb_search(terms, nterms, &nresults); | |
806 | sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults); | |
807 | for(n = 0; n < nresults; ++n) | |
808 | sink_printf(ev_writer_sink(c->w), "%s\n", results[n]); | |
809 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
810 | } | |
811 | return 1; | |
812 | } | |
813 | ||
814 | static int c_random_enable(struct conn *c, | |
815 | char attribute((unused)) **vec, | |
816 | int attribute((unused)) nvec) { | |
817 | enable_random(c->who, c->ev); | |
818 | /* Enable implicitly unpauses if there is nothing playing */ | |
819 | if(paused && !playing) resume_playing(c->who); | |
820 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
821 | return 1; /* completed */ | |
822 | } | |
823 | ||
824 | static int c_random_disable(struct conn *c, | |
825 | char attribute((unused)) **vec, | |
826 | int attribute((unused)) nvec) { | |
827 | disable_random(c->who); | |
828 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
829 | return 1; /* completed */ | |
830 | } | |
831 | ||
832 | static int c_random_enabled(struct conn *c, | |
833 | char attribute((unused)) **vec, | |
834 | int attribute((unused)) nvec) { | |
835 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]); | |
836 | return 1; /* completed */ | |
837 | } | |
838 | ||
d6dde5a3 RK |
839 | static void got_stats(char *stats, void *u) { |
840 | struct conn *const c = u; | |
841 | ||
842 | sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats); | |
843 | /* Now we can start processing commands again */ | |
844 | ev_reader_enable(c->r); | |
845 | } | |
846 | ||
460b9539 | 847 | static int c_stats(struct conn *c, |
848 | char attribute((unused)) **vec, | |
849 | int attribute((unused)) nvec) { | |
d6dde5a3 RK |
850 | trackdb_stats_subprocess(c->ev, got_stats, c); |
851 | return 0; /* not yet complete */ | |
460b9539 | 852 | } |
853 | ||
854 | static int c_volume(struct conn *c, | |
855 | char **vec, | |
856 | int nvec) { | |
857 | int l, r, set; | |
858 | char lb[32], rb[32]; | |
eb5dc014 | 859 | rights_type rights; |
460b9539 | 860 | |
861 | switch(nvec) { | |
862 | case 0: | |
863 | set = 0; | |
864 | break; | |
865 | case 1: | |
866 | l = r = atoi(vec[0]); | |
867 | set = 1; | |
868 | break; | |
869 | case 2: | |
870 | l = atoi(vec[0]); | |
871 | r = atoi(vec[1]); | |
872 | set = 1; | |
873 | break; | |
874 | default: | |
875 | abort(); | |
876 | } | |
eb5dc014 RK |
877 | rights = set ? RIGHT_VOLUME : RIGHT_READ; |
878 | if(!(c->rights & rights)) { | |
834e7c4a | 879 | error(0, "%s attempted to set volume but lacks required rights", c->who); |
b4a80f69 | 880 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
eb5dc014 RK |
881 | return 1; |
882 | } | |
3c499fe7 | 883 | if(mixer_control(-1/*as configured*/, &l, &r, set)) |
460b9539 | 884 | sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n"); |
885 | else { | |
886 | sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r); | |
887 | if(l != volume_left || r != volume_right) { | |
888 | volume_left = l; | |
889 | volume_right = r; | |
890 | snprintf(lb, sizeof lb, "%d", l); | |
891 | snprintf(rb, sizeof rb, "%d", r); | |
892 | eventlog("volume", lb, rb, (char *)0); | |
893 | } | |
894 | } | |
895 | return 1; | |
896 | } | |
897 | ||
397ef7bb RK |
898 | /** @brief Called when data arrives on a log connection |
899 | * | |
900 | * We just discard all such data. The client may occasionally send data as a | |
901 | * keepalive. | |
902 | */ | |
903 | static int logging_reader_callback(ev_source attribute((unused)) *ev, | |
460b9539 | 904 | ev_reader *reader, |
397ef7bb | 905 | void attribute((unused)) *ptr, |
460b9539 | 906 | size_t bytes, |
397ef7bb RK |
907 | int attribute((unused)) eof, |
908 | void attribute((unused)) *u) { | |
460b9539 | 909 | struct conn *c = u; |
910 | ||
397ef7bb RK |
911 | ev_reader_consume(reader, bytes); |
912 | if(eof) { | |
913 | /* Oops, that's all for now */ | |
8d8b8c1f | 914 | D(("logging reader eof")); |
397ef7bb | 915 | if(c->w) { |
8d8b8c1f | 916 | D(("close writer")); |
397ef7bb RK |
917 | ev_writer_close(c->w); |
918 | c->w = 0; | |
919 | } | |
920 | c->r = 0; | |
0126692c | 921 | remove_connection(c); |
f6033c46 | 922 | } |
397ef7bb | 923 | return 0; |
460b9539 | 924 | } |
925 | ||
926 | static void logclient(const char *msg, void *user) { | |
927 | struct conn *c = user; | |
928 | ||
f6033c46 RK |
929 | if(!c->w || !c->r) { |
930 | /* This connection has gone up in smoke for some reason */ | |
931 | eventlog_remove(c->lo); | |
932 | return; | |
933 | } | |
460b9539 | 934 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n", |
935 | (uintmax_t)time(0), msg); | |
936 | } | |
937 | ||
938 | static int c_log(struct conn *c, | |
939 | char attribute((unused)) **vec, | |
940 | int attribute((unused)) nvec) { | |
941 | time_t now; | |
942 | ||
943 | sink_writes(ev_writer_sink(c->w), "254 OK\n"); | |
944 | /* pump out initial state */ | |
945 | time(&now); | |
946 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
947 | (uintmax_t)now, | |
948 | playing_is_enabled() ? "enable_play" : "disable_play"); | |
949 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
950 | (uintmax_t)now, | |
951 | random_is_enabled() ? "enable_random" : "disable_random"); | |
952 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
953 | (uintmax_t)now, | |
954 | paused ? "pause" : "resume"); | |
5abe307a RK |
955 | if(playing) |
956 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n", | |
957 | (uintmax_t)now); | |
df44d69b RK |
958 | /* Initial volume */ |
959 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n", | |
960 | (uintmax_t)now, volume_left, volume_right); | |
460b9539 | 961 | c->lo = xmalloc(sizeof *c->lo); |
962 | c->lo->fn = logclient; | |
963 | c->lo->user = c; | |
964 | eventlog_add(c->lo); | |
965 | c->reader = logging_reader_callback; | |
966 | return 0; | |
967 | } | |
968 | ||
eb5dc014 RK |
969 | /** @brief Test whether a move is allowed |
970 | * @param c Connection | |
971 | * @param qs List of IDs on queue | |
972 | * @param nqs Number of IDs | |
973 | * @return 0 if move is prohibited, non-0 if it is allowed | |
974 | */ | |
975 | static int has_move_rights(struct conn *c, struct queue_entry **qs, int nqs) { | |
eb5dc014 RK |
976 | for(; nqs > 0; ++qs, --nqs) { |
977 | struct queue_entry *const q = *qs; | |
978 | ||
938d8157 | 979 | if(!right_movable(c->rights, c->who, q)) |
980 | return 0; | |
eb5dc014 | 981 | } |
938d8157 | 982 | return 1; |
eb5dc014 RK |
983 | } |
984 | ||
460b9539 | 985 | static int c_move(struct conn *c, |
986 | char **vec, | |
987 | int attribute((unused)) nvec) { | |
988 | struct queue_entry *q; | |
989 | int n; | |
990 | ||
460b9539 | 991 | if(!(q = queue_find(vec[0]))) { |
992 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
993 | return 1; | |
994 | } | |
eb5dc014 | 995 | if(!has_move_rights(c, &q, 1)) { |
834e7c4a | 996 | error(0, "%s attempted move but lacks required rights", c->who); |
eb5dc014 | 997 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 998 | "510 Not authorized to move that track\n"); |
eb5dc014 RK |
999 | return 1; |
1000 | } | |
460b9539 | 1001 | n = queue_move(q, atoi(vec[1]), c->who); |
460b9539 | 1002 | sink_printf(ev_writer_sink(c->w), "252 %d\n", n); |
1003 | /* If we've moved to the head of the queue then prepare the track. */ | |
1004 | if(q == qhead.next) | |
1005 | prepare(c->ev, q); | |
1006 | return 1; | |
1007 | } | |
1008 | ||
1009 | static int c_moveafter(struct conn *c, | |
1010 | char **vec, | |
1011 | int attribute((unused)) nvec) { | |
1012 | struct queue_entry *q, **qs; | |
1013 | int n; | |
1014 | ||
460b9539 | 1015 | if(vec[0][0]) { |
1016 | if(!(q = queue_find(vec[0]))) { | |
1017 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1018 | return 1; | |
1019 | } | |
1020 | } else | |
1021 | q = 0; | |
1022 | ++vec; | |
1023 | --nvec; | |
1024 | qs = xcalloc(nvec, sizeof *qs); | |
1025 | for(n = 0; n < nvec; ++n) | |
1026 | if(!(qs[n] = queue_find(vec[n]))) { | |
1027 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1028 | return 1; | |
1029 | } | |
eb5dc014 | 1030 | if(!has_move_rights(c, qs, nvec)) { |
834e7c4a | 1031 | error(0, "%s attempted moveafter but lacks required rights", c->who); |
eb5dc014 | 1032 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1033 | "510 Not authorized to move those tracks\n"); |
eb5dc014 RK |
1034 | return 1; |
1035 | } | |
460b9539 | 1036 | queue_moveafter(q, nvec, qs, c->who); |
460b9539 | 1037 | sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n"); |
1038 | /* If we've moved to the head of the queue then prepare the track. */ | |
1039 | if(q == qhead.next) | |
1040 | prepare(c->ev, q); | |
1041 | return 1; | |
1042 | } | |
1043 | ||
1044 | static int c_part(struct conn *c, | |
1045 | char **vec, | |
1046 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
1047 | const char *track; |
1048 | ||
1049 | if(!(track = trackdb_resolve(vec[0]))) { | |
1050 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1051 | return 1; | |
1052 | } | |
460b9539 | 1053 | sink_printf(ev_writer_sink(c->w), "252 %s\n", |
27ed5a69 | 1054 | quoteutf8(trackdb_getpart(track, vec[1], vec[2]))); |
460b9539 | 1055 | return 1; |
1056 | } | |
1057 | ||
1058 | static int c_resolve(struct conn *c, | |
1059 | char **vec, | |
1060 | int attribute((unused)) nvec) { | |
1061 | const char *track; | |
1062 | ||
1063 | if(!(track = trackdb_resolve(vec[0]))) { | |
1064 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1065 | return 1; | |
1066 | } | |
7b32e917 | 1067 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(track)); |
460b9539 | 1068 | return 1; |
1069 | } | |
1070 | ||
1071 | static int c_tags(struct conn *c, | |
1072 | char attribute((unused)) **vec, | |
1073 | int attribute((unused)) nvec) { | |
1074 | char **tags = trackdb_alltags(); | |
1075 | ||
1076 | sink_printf(ev_writer_sink(c->w), "253 Tag list follows\n"); | |
1077 | while(*tags) { | |
1078 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
1079 | **tags == '.' ? "." : "", *tags); | |
1080 | ++tags; | |
1081 | } | |
1082 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1083 | return 1; /* completed */ | |
460b9539 | 1084 | } |
1085 | ||
1086 | static int c_set_global(struct conn *c, | |
1087 | char **vec, | |
1088 | int attribute((unused)) nvec) { | |
f9635e06 RK |
1089 | if(vec[0][0] == '_') { |
1090 | sink_writes(ev_writer_sink(c->w), "550 cannot set internal global preferences\n"); | |
1091 | return 1; | |
1092 | } | |
460b9539 | 1093 | trackdb_set_global(vec[0], vec[1], c->who); |
1094 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
1095 | return 1; | |
1096 | } | |
1097 | ||
1098 | static int c_get_global(struct conn *c, | |
1099 | char **vec, | |
1100 | int attribute((unused)) nvec) { | |
1101 | const char *s = trackdb_get_global(vec[0]); | |
1102 | ||
1103 | if(s) | |
7b32e917 | 1104 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(s)); |
460b9539 | 1105 | else |
fb1bc1f5 | 1106 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 1107 | return 1; |
1108 | } | |
1109 | ||
7858930d | 1110 | static int c_nop(struct conn *c, |
1111 | char attribute((unused)) **vec, | |
1112 | int attribute((unused)) nvec) { | |
1113 | sink_printf(ev_writer_sink(c->w), "250 Quack\n"); | |
1114 | return 1; | |
1115 | } | |
1116 | ||
2a10b70b RK |
1117 | static int c_new(struct conn *c, |
1118 | char **vec, | |
1119 | int nvec) { | |
d742bb47 RK |
1120 | int max, n; |
1121 | char **tracks; | |
2a10b70b | 1122 | |
d742bb47 RK |
1123 | if(nvec > 0) |
1124 | max = atoi(vec[0]); | |
1125 | else | |
1126 | max = INT_MAX; | |
1127 | if(max <= 0 || max > config->new_max) | |
1128 | max = config->new_max; | |
1129 | tracks = trackdb_new(0, max); | |
2a10b70b | 1130 | sink_printf(ev_writer_sink(c->w), "253 New track list follows\n"); |
d742bb47 | 1131 | n = 0; |
2a10b70b RK |
1132 | while(*tracks) { |
1133 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
1134 | **tracks == '.' ? "." : "", *tracks); | |
1135 | ++tracks; | |
1136 | } | |
1137 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1138 | return 1; /* completed */ | |
1139 | ||
1140 | } | |
1141 | ||
ca831831 RK |
1142 | static int c_rtp_address(struct conn *c, |
1143 | char attribute((unused)) **vec, | |
1144 | int attribute((unused)) nvec) { | |
bd8895a8 | 1145 | if(config->api == BACKEND_NETWORK) { |
ca831831 RK |
1146 | sink_printf(ev_writer_sink(c->w), "252 %s %s\n", |
1147 | quoteutf8(config->broadcast.s[0]), | |
1148 | quoteutf8(config->broadcast.s[1])); | |
1149 | } else | |
1150 | sink_writes(ev_writer_sink(c->w), "550 No RTP\n"); | |
1151 | return 1; | |
1152 | } | |
b12be54a RK |
1153 | |
1154 | static int c_cookie(struct conn *c, | |
1155 | char **vec, | |
1156 | int attribute((unused)) nvec) { | |
1157 | const char *host; | |
1158 | char *user; | |
eb5dc014 | 1159 | rights_type rights; |
b12be54a RK |
1160 | |
1161 | /* Can't log in twice on the same connection */ | |
1162 | if(c->who) { | |
1163 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
1164 | return 1; | |
1165 | } | |
1166 | /* Get some kind of peer identifcation */ | |
1167 | if(!(host = connection_host(c))) { | |
1168 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1169 | return 1; | |
1170 | } | |
1171 | /* Check the cookie */ | |
eb5dc014 | 1172 | user = verify_cookie(vec[0], &rights); |
b12be54a RK |
1173 | if(!user) { |
1174 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1175 | return 1; | |
1176 | } | |
1177 | /* Log in */ | |
e48c28bb | 1178 | c->who = user; |
b12be54a | 1179 | c->cookie = vec[0]; |
eb5dc014 | 1180 | c->rights = rights; |
30365519 | 1181 | if(strcmp(host, "local")) |
b12be54a | 1182 | info("S%x %s connected with cookie from %s", c->tag, user, host); |
30365519 | 1183 | else |
eb5dc014 | 1184 | c->rights |= RIGHT__LOCAL; |
0227f67d RK |
1185 | /* Response contains username so client knows who they are acting as */ |
1186 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
b12be54a RK |
1187 | return 1; |
1188 | } | |
1189 | ||
1190 | static int c_make_cookie(struct conn *c, | |
1191 | char attribute((unused)) **vec, | |
1192 | int attribute((unused)) nvec) { | |
1193 | const char *cookie = make_cookie(c->who); | |
1194 | ||
1195 | if(cookie) | |
eb5dc014 | 1196 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cookie)); |
b12be54a RK |
1197 | else |
1198 | sink_writes(ev_writer_sink(c->w), "550 Cannot create cookie\n"); | |
1199 | return 1; | |
1200 | } | |
1201 | ||
1202 | static int c_revoke(struct conn *c, | |
1203 | char attribute((unused)) **vec, | |
1204 | int attribute((unused)) nvec) { | |
1205 | if(c->cookie) { | |
1206 | revoke_cookie(c->cookie); | |
1207 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1208 | } else | |
1209 | sink_writes(ev_writer_sink(c->w), "550 Did not log in with cookie\n"); | |
1210 | return 1; | |
1211 | } | |
1212 | ||
f0feb22e RK |
1213 | static int c_adduser(struct conn *c, |
1214 | char **vec, | |
0f55e905 RK |
1215 | int nvec) { |
1216 | const char *rights; | |
1217 | ||
810b8083 | 1218 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
39e7dcfb | 1219 | error(0, "S%x: remote adduser", c->tag); |
810b8083 RK |
1220 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1221 | return 1; | |
1222 | } | |
0f55e905 RK |
1223 | if(nvec > 2) { |
1224 | rights = vec[2]; | |
1225 | if(parse_rights(vec[2], 0, 1)) { | |
1226 | sink_writes(ev_writer_sink(c->w), "550 Invalid rights list\n"); | |
1227 | return -1; | |
1228 | } | |
1229 | } else | |
1230 | rights = config->default_rights; | |
1231 | if(trackdb_adduser(vec[0], vec[1], rights, | |
ba39faf6 | 1232 | 0/*email*/, 0/*confirmation*/)) |
f0feb22e RK |
1233 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1234 | else | |
1235 | sink_writes(ev_writer_sink(c->w), "250 User created\n"); | |
1236 | return 1; | |
1237 | } | |
1238 | ||
1239 | static int c_deluser(struct conn *c, | |
1240 | char **vec, | |
1241 | int attribute((unused)) nvec) { | |
0126692c | 1242 | struct conn *d; |
1243 | ||
810b8083 | 1244 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
39e7dcfb | 1245 | error(0, "S%x: remote deluser", c->tag); |
810b8083 RK |
1246 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1247 | return 1; | |
1248 | } | |
0126692c | 1249 | if(trackdb_deluser(vec[0])) { |
ba39faf6 | 1250 | sink_writes(ev_writer_sink(c->w), "550 Cannot delete user\n"); |
0126692c | 1251 | return 1; |
1252 | } | |
1253 | /* Zap connections belonging to deleted user */ | |
1254 | for(d = connections; d; d = d->next) | |
1255 | if(!strcmp(d->who, vec[0])) | |
1256 | d->rights = 0; | |
1257 | sink_writes(ev_writer_sink(c->w), "250 User deleted\n"); | |
f0feb22e RK |
1258 | return 1; |
1259 | } | |
1260 | ||
1261 | static int c_edituser(struct conn *c, | |
5df73aeb | 1262 | char **vec, |
f0feb22e | 1263 | int attribute((unused)) nvec) { |
0126692c | 1264 | struct conn *d; |
1265 | ||
810b8083 | 1266 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
39e7dcfb | 1267 | error(0, "S%x: remote edituser", c->tag); |
810b8083 RK |
1268 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1269 | return 1; | |
1270 | } | |
eb5dc014 RK |
1271 | /* RIGHT_ADMIN can do anything; otherwise you can only set your own email |
1272 | * address and password. */ | |
1273 | if((c->rights & RIGHT_ADMIN) | |
5df73aeb RK |
1274 | || (!strcmp(c->who, vec[0]) |
1275 | && (!strcmp(vec[1], "email") | |
1276 | || !strcmp(vec[1], "password")))) { | |
0126692c | 1277 | if(trackdb_edituserinfo(vec[0], vec[1], vec[2])) { |
5df73aeb | 1278 | sink_writes(ev_writer_sink(c->w), "550 Failed to change setting\n"); |
0126692c | 1279 | return 1; |
1280 | } | |
1281 | if(!strcmp(vec[1], "password")) { | |
1282 | /* Zap all connections for this user after a password change */ | |
1283 | for(d = connections; d; d = d->next) | |
1284 | if(!strcmp(d->who, vec[0])) | |
1285 | d->rights = 0; | |
1286 | } else if(!strcmp(vec[1], "rights")) { | |
1287 | /* Update rights for this user */ | |
1288 | rights_type r; | |
1289 | ||
d3369bca | 1290 | if(parse_rights(vec[2], &r, 1)) |
0126692c | 1291 | for(d = connections; d; d = d->next) |
1292 | if(!strcmp(d->who, vec[0])) | |
1293 | d->rights = r; | |
1294 | } | |
1295 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
834e7c4a | 1296 | } else { |
1297 | error(0, "%s attempted edituser but lacks required rights", c->who); | |
b4a80f69 | 1298 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1299 | } |
f0feb22e RK |
1300 | return 1; |
1301 | } | |
1302 | ||
1303 | static int c_userinfo(struct conn *c, | |
1304 | char attribute((unused)) **vec, | |
1305 | int attribute((unused)) nvec) { | |
5df73aeb RK |
1306 | struct kvp *k; |
1307 | const char *value; | |
eb5dc014 | 1308 | |
39e7dcfb RK |
1309 | /* We allow remote querying of rights so that clients can figure out what |
1310 | * they're allowed to do */ | |
1311 | if(!config->remote_userman | |
1312 | && !(c->rights & RIGHT__LOCAL) | |
1313 | && strcmp(vec[1], "rights")) { | |
1314 | error(0, "S%x: remote userinfo %s %s", c->tag, vec[0], vec[1]); | |
810b8083 RK |
1315 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1316 | return 1; | |
1317 | } | |
eb5dc014 | 1318 | /* RIGHT_ADMIN allows anything; otherwise you can only get your own email |
29f5fbd2 | 1319 | * address and rights list. */ |
eb5dc014 | 1320 | if((c->rights & RIGHT_ADMIN) |
5df73aeb RK |
1321 | || (!strcmp(c->who, vec[0]) |
1322 | && (!strcmp(vec[1], "email") | |
1323 | || !strcmp(vec[1], "rights")))) { | |
1324 | if((k = trackdb_getuserinfo(vec[0]))) | |
1325 | if((value = kvp_get(k, vec[1]))) | |
1326 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(value)); | |
1327 | else | |
1328 | sink_writes(ev_writer_sink(c->w), "555 Not set\n"); | |
1329 | else | |
1330 | sink_writes(ev_writer_sink(c->w), "550 No such user\n"); | |
834e7c4a | 1331 | } else { |
1332 | error(0, "%s attempted userinfo but lacks required rights", c->who); | |
b4a80f69 | 1333 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1334 | } |
f0feb22e RK |
1335 | return 1; |
1336 | } | |
1337 | ||
c3be4f19 RK |
1338 | static int c_users(struct conn *c, |
1339 | char attribute((unused)) **vec, | |
1340 | int attribute((unused)) nvec) { | |
1341 | /* TODO de-dupe with c_tags */ | |
1342 | char **users = trackdb_listusers(); | |
1343 | ||
1344 | sink_writes(ev_writer_sink(c->w), "253 User list follows\n"); | |
1345 | while(*users) { | |
1346 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
1347 | **users == '.' ? "." : "", *users); | |
1348 | ++users; | |
1349 | } | |
1350 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1351 | return 1; /* completed */ | |
1352 | } | |
1353 | ||
86e3aea7 | 1354 | /** @brief Base64 mapping table for confirmation strings |
1355 | * | |
1356 | * This is used with generic_to_base64() and generic_base64(). We cannot use | |
1357 | * the MIME table as that contains '+' and '=' which get quoted when | |
1358 | * URL-encoding. (The CGI still does the URL encoding but it is desirable to | |
1359 | * avoid it being necessary.) | |
1360 | */ | |
1361 | static const char confirm_base64_table[] = | |
1362 | "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789/.*"; | |
1363 | ||
ba39faf6 RK |
1364 | static int c_register(struct conn *c, |
1365 | char **vec, | |
1366 | int attribute((unused)) nvec) { | |
1367 | char *buf, *cs; | |
1368 | size_t bufsize; | |
1369 | int offset; | |
1370 | ||
1371 | /* The confirmation string is base64(username;nonce) */ | |
10114017 | 1372 | bufsize = strlen(vec[0]) + CONFIRM_SIZE + 2; |
ba39faf6 RK |
1373 | buf = xmalloc_noptr(bufsize); |
1374 | offset = byte_snprintf(buf, bufsize, "%s;", vec[0]); | |
10114017 | 1375 | gcry_randomize(buf + offset, CONFIRM_SIZE, GCRY_STRONG_RANDOM); |
86e3aea7 | 1376 | cs = generic_to_base64((uint8_t *)buf, offset + CONFIRM_SIZE, |
1377 | confirm_base64_table); | |
ba39faf6 RK |
1378 | if(trackdb_adduser(vec[0], vec[1], config->default_rights, vec[2], cs)) |
1379 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); | |
1380 | else | |
1381 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cs)); | |
1382 | return 1; | |
1383 | } | |
1384 | ||
1385 | static int c_confirm(struct conn *c, | |
1386 | char **vec, | |
1387 | int attribute((unused)) nvec) { | |
1388 | size_t nuser; | |
1389 | char *user, *sep; | |
30365519 | 1390 | rights_type rights; |
1391 | const char *host; | |
ba39faf6 | 1392 | |
30365519 | 1393 | /* Get some kind of peer identifcation */ |
1394 | if(!(host = connection_host(c))) { | |
1395 | sink_writes(ev_writer_sink(c->w), "530 Authentication failure\n"); | |
1396 | return 1; | |
1397 | } | |
86e3aea7 | 1398 | if(!(user = generic_base64(vec[0], &nuser, confirm_base64_table)) |
ba39faf6 RK |
1399 | || !(sep = memchr(user, ';', nuser))) { |
1400 | sink_writes(ev_writer_sink(c->w), "550 Malformed confirmation string\n"); | |
1401 | return 1; | |
1402 | } | |
1403 | *sep = 0; | |
30365519 | 1404 | if(trackdb_confirm(user, vec[0], &rights)) |
ba39faf6 | 1405 | sink_writes(ev_writer_sink(c->w), "550 Incorrect confirmation string\n"); |
30365519 | 1406 | else { |
1407 | c->who = user; | |
1408 | c->cookie = 0; | |
1409 | c->rights = rights; | |
1410 | if(strcmp(host, "local")) | |
1411 | info("S%x %s confirmed from %s", c->tag, user, host); | |
1412 | else | |
1413 | c->rights |= RIGHT__LOCAL; | |
1414 | /* Response contains username so client knows who they are acting as */ | |
1415 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
1416 | } | |
ba39faf6 RK |
1417 | return 1; |
1418 | } | |
6207d2f3 | 1419 | |
1420 | static int sent_reminder(ev_source attribute((unused)) *ev, | |
1421 | pid_t attribute((unused)) pid, | |
1422 | int status, | |
1423 | const struct rusage attribute((unused)) *rusage, | |
1424 | void *u) { | |
1425 | struct conn *const c = u; | |
1426 | ||
1427 | /* Tell the client what went down */ | |
1428 | if(!status) { | |
1429 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1430 | } else { | |
1431 | error(0, "reminder subprocess %s", wstat(status)); | |
1432 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1433 | } | |
1434 | /* Re-enable this connection */ | |
1435 | ev_reader_enable(c->r); | |
1436 | return 0; | |
1437 | } | |
1438 | ||
1439 | static int c_reminder(struct conn *c, | |
1440 | char **vec, | |
1441 | int attribute((unused)) nvec) { | |
1442 | struct kvp *k; | |
1443 | const char *password, *email, *text, *encoding, *charset, *content_type; | |
1444 | const time_t *last; | |
1445 | time_t now; | |
1446 | pid_t pid; | |
1447 | ||
1448 | static hash *last_reminder; | |
1449 | ||
1450 | if(!config->mail_sender) { | |
1451 | error(0, "cannot send password reminders because mail_sender not set"); | |
1452 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1453 | return 1; | |
1454 | } | |
1455 | if(!(k = trackdb_getuserinfo(vec[0]))) { | |
1456 | error(0, "reminder for user '%s' who does not exist", vec[0]); | |
1457 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1458 | return 1; | |
1459 | } | |
1460 | if(!(email = kvp_get(k, "email")) | |
1461 | || !strchr(email, '@')) { | |
1462 | error(0, "user '%s' has no valid email address", vec[0]); | |
1463 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1464 | return 1; | |
1465 | } | |
1466 | if(!(password = kvp_get(k, "password")) | |
1467 | || !*password) { | |
1468 | error(0, "user '%s' has no password", vec[0]); | |
1469 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1470 | return 1; | |
1471 | } | |
1472 | /* Rate-limit reminders. This hash is bounded in size by the number of | |
1473 | * users. If this is actually a problem for anyone then we can periodically | |
1474 | * clean it. */ | |
1475 | if(!last_reminder) | |
1476 | last_reminder = hash_new(sizeof (time_t)); | |
1477 | last = hash_find(last_reminder, vec[0]); | |
1478 | time(&now); | |
1479 | if(last && now < *last + config->reminder_interval) { | |
1480 | error(0, "sent a password reminder to '%s' too recently", vec[0]); | |
1481 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1482 | return 1; | |
1483 | } | |
1484 | /* Send the reminder */ | |
1485 | /* TODO this should be templatized and to some extent merged with | |
1486 | * the code in act_register() */ | |
1487 | byte_xasprintf((char **)&text, | |
1488 | "Someone requested that you be sent a reminder of your DisOrder password.\n" | |
1489 | "Your password is:\n" | |
1490 | "\n" | |
1491 | " %s\n", password); | |
1492 | if(!(text = mime_encode_text(text, &charset, &encoding))) | |
1493 | fatal(0, "cannot encode email"); | |
1494 | byte_xasprintf((char **)&content_type, "text/plain;charset=%s", | |
1495 | quote822(charset, 0)); | |
1496 | pid = sendmail_subprocess("", config->mail_sender, email, | |
1497 | "DisOrder password reminder", | |
1498 | encoding, content_type, text); | |
1499 | if(pid < 0) { | |
1500 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1501 | return 1; | |
1502 | } | |
1503 | hash_add(last_reminder, vec[0], &now, HASH_INSERT_OR_REPLACE); | |
1504 | info("sending a passsword reminder to user '%s'", vec[0]); | |
1505 | /* We can only continue when the subprocess finishes */ | |
1506 | ev_child(c->ev, pid, 0, sent_reminder, c); | |
1507 | return 0; | |
1508 | } | |
1509 | ||
2b33c4cf RK |
1510 | static int c_schedule_list(struct conn *c, |
1511 | char attribute((unused)) **vec, | |
1512 | int attribute((unused)) nvec) { | |
1513 | char **ids = schedule_list(0); | |
1514 | sink_writes(ev_writer_sink(c->w), "253 ID list follows\n"); | |
1515 | while(*ids) | |
1516 | sink_printf(ev_writer_sink(c->w), "%s\n", *ids++); | |
1517 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1518 | return 1; /* completed */ | |
1519 | } | |
1520 | ||
1521 | static int c_schedule_get(struct conn *c, | |
1522 | char **vec, | |
1523 | int attribute((unused)) nvec) { | |
1524 | struct kvp *actiondata = schedule_get(vec[0]), *k; | |
1525 | ||
1526 | if(!actiondata) { | |
1527 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1528 | return 1; /* completed */ | |
1529 | } | |
1530 | /* Scheduled events are public information. Anyone with RIGHT_READ can see | |
1531 | * them. */ | |
1532 | sink_writes(ev_writer_sink(c->w), "253 Event information follows\n"); | |
1533 | for(k = actiondata; k; k = k->next) | |
1534 | sink_printf(ev_writer_sink(c->w), " %s %s\n", | |
1535 | quoteutf8(k->name), quoteutf8(k->value)); | |
1536 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1537 | return 1; /* completed */ | |
1538 | } | |
1539 | ||
1540 | static int c_schedule_del(struct conn *c, | |
1541 | char **vec, | |
1542 | int attribute((unused)) nvec) { | |
1543 | struct kvp *actiondata = schedule_get(vec[0]); | |
1544 | ||
1545 | if(!actiondata) { | |
1546 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1547 | return 1; /* completed */ | |
1548 | } | |
1549 | /* If you have admin rights you can delete anything. If you don't then you | |
1550 | * can only delete your own scheduled events. */ | |
1551 | if(!(c->rights & RIGHT_ADMIN)) { | |
1552 | const char *who = kvp_get(actiondata, "who"); | |
1553 | ||
1554 | if(!who || !c->who || strcmp(who, c->who)) { | |
1555 | sink_writes(ev_writer_sink(c->w), "551 Not authorized\n"); | |
1556 | return 1; /* completed */ | |
1557 | } | |
1558 | } | |
1559 | if(schedule_del(vec[0])) | |
1560 | sink_writes(ev_writer_sink(c->w), "550 Could not delete scheduled event\n"); | |
1561 | else | |
1562 | sink_writes(ev_writer_sink(c->w), "250 Deleted\n"); | |
1563 | return 1; /* completed */ | |
1564 | } | |
1565 | ||
1566 | static int c_schedule_add(struct conn *c, | |
1567 | char **vec, | |
1568 | int nvec) { | |
1569 | struct kvp *actiondata = 0; | |
067eeb5f | 1570 | const char *id; |
2b33c4cf RK |
1571 | |
1572 | /* Standard fields */ | |
1573 | kvp_set(&actiondata, "who", c->who); | |
1574 | kvp_set(&actiondata, "when", vec[0]); | |
1575 | kvp_set(&actiondata, "priority", vec[1]); | |
1576 | kvp_set(&actiondata, "action", vec[2]); | |
1577 | /* Action-dependent fields */ | |
1578 | if(!strcmp(vec[2], "play")) { | |
1579 | if(nvec != 4) { | |
1580 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1581 | return 1; | |
1582 | } | |
1583 | if(!trackdb_exists(vec[3])) { | |
1584 | sink_writes(ev_writer_sink(c->w), "550 Track is not in database\n"); | |
1585 | return 1; | |
1586 | } | |
1587 | kvp_set(&actiondata, "track", vec[3]); | |
1588 | } else if(!strcmp(vec[2], "set-global")) { | |
1589 | if(nvec < 4 || nvec > 5) { | |
1590 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1591 | return 1; | |
1592 | } | |
1593 | kvp_set(&actiondata, "key", vec[3]); | |
1594 | if(nvec > 4) | |
1595 | kvp_set(&actiondata, "value", vec[4]); | |
1596 | } else { | |
1597 | sink_writes(ev_writer_sink(c->w), "550 Unknown action\n"); | |
1598 | return 1; | |
1599 | } | |
1600 | /* schedule_add() checks user rights */ | |
1601 | id = schedule_add(c->ev, actiondata); | |
1602 | if(!id) | |
1603 | sink_writes(ev_writer_sink(c->w), "550 Cannot add scheduled event\n"); | |
1604 | else | |
1605 | sink_printf(ev_writer_sink(c->w), "252 %s\n", id); | |
1606 | return 1; | |
1607 | } | |
1608 | ||
460b9539 | 1609 | static const struct command { |
eb5dc014 | 1610 | /** @brief Command name */ |
460b9539 | 1611 | const char *name; |
eb5dc014 RK |
1612 | |
1613 | /** @brief Minimum number of arguments */ | |
1614 | int minargs; | |
1615 | ||
1616 | /** @brief Maximum number of arguments */ | |
1617 | int maxargs; | |
1618 | ||
1619 | /** @brief Function to process command */ | |
460b9539 | 1620 | int (*fn)(struct conn *, char **, int); |
eb5dc014 RK |
1621 | |
1622 | /** @brief Rights required to execute command | |
1623 | * | |
1624 | * 0 means that the command can be issued without logging in. If multiple | |
1625 | * bits are listed here any of those rights will do. | |
1626 | */ | |
1627 | rights_type rights; | |
460b9539 | 1628 | } commands[] = { |
0f55e905 | 1629 | { "adduser", 2, 3, c_adduser, RIGHT_ADMIN|RIGHT__LOCAL }, |
eb5dc014 | 1630 | { "allfiles", 0, 2, c_allfiles, RIGHT_READ }, |
ba39faf6 | 1631 | { "confirm", 1, 1, c_confirm, 0 }, |
b12be54a | 1632 | { "cookie", 1, 1, c_cookie, 0 }, |
eb5dc014 RK |
1633 | { "deluser", 1, 1, c_deluser, RIGHT_ADMIN|RIGHT__LOCAL }, |
1634 | { "dirs", 0, 2, c_dirs, RIGHT_READ }, | |
1635 | { "disable", 0, 1, c_disable, RIGHT_GLOBAL_PREFS }, | |
1636 | { "edituser", 3, 3, c_edituser, RIGHT_ADMIN|RIGHT_USERINFO }, | |
1637 | { "enable", 0, 0, c_enable, RIGHT_GLOBAL_PREFS }, | |
1638 | { "enabled", 0, 0, c_enabled, RIGHT_READ }, | |
1639 | { "exists", 1, 1, c_exists, RIGHT_READ }, | |
1640 | { "files", 0, 2, c_files, RIGHT_READ }, | |
1641 | { "get", 2, 2, c_get, RIGHT_READ }, | |
1642 | { "get-global", 1, 1, c_get_global, RIGHT_READ }, | |
1643 | { "length", 1, 1, c_length, RIGHT_READ }, | |
1644 | { "log", 0, 0, c_log, RIGHT_READ }, | |
1645 | { "make-cookie", 0, 0, c_make_cookie, RIGHT_READ }, | |
1646 | { "move", 2, 2, c_move, RIGHT_MOVE__MASK }, | |
1647 | { "moveafter", 1, INT_MAX, c_moveafter, RIGHT_MOVE__MASK }, | |
1648 | { "new", 0, 1, c_new, RIGHT_READ }, | |
1649 | { "nop", 0, 0, c_nop, 0 }, | |
1650 | { "part", 3, 3, c_part, RIGHT_READ }, | |
1651 | { "pause", 0, 0, c_pause, RIGHT_PAUSE }, | |
1652 | { "play", 1, 1, c_play, RIGHT_PLAY }, | |
1653 | { "playing", 0, 0, c_playing, RIGHT_READ }, | |
1654 | { "prefs", 1, 1, c_prefs, RIGHT_READ }, | |
1655 | { "queue", 0, 0, c_queue, RIGHT_READ }, | |
1656 | { "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS }, | |
1657 | { "random-enable", 0, 0, c_random_enable, RIGHT_GLOBAL_PREFS }, | |
1658 | { "random-enabled", 0, 0, c_random_enabled, RIGHT_READ }, | |
1659 | { "recent", 0, 0, c_recent, RIGHT_READ }, | |
1660 | { "reconfigure", 0, 0, c_reconfigure, RIGHT_ADMIN }, | |
ba39faf6 | 1661 | { "register", 3, 3, c_register, RIGHT_REGISTER|RIGHT__LOCAL }, |
6207d2f3 | 1662 | { "reminder", 1, 1, c_reminder, RIGHT__LOCAL }, |
eb5dc014 | 1663 | { "remove", 1, 1, c_remove, RIGHT_REMOVE__MASK }, |
dd9af5cb | 1664 | { "rescan", 0, INT_MAX, c_rescan, RIGHT_RESCAN }, |
eb5dc014 RK |
1665 | { "resolve", 1, 1, c_resolve, RIGHT_READ }, |
1666 | { "resume", 0, 0, c_resume, RIGHT_PAUSE }, | |
1667 | { "revoke", 0, 0, c_revoke, RIGHT_READ }, | |
1668 | { "rtp-address", 0, 0, c_rtp_address, 0 }, | |
2b33c4cf RK |
1669 | { "schedule-add", 3, INT_MAX, c_schedule_add, RIGHT_READ }, |
1670 | { "schedule-del", 1, 1, c_schedule_del, RIGHT_READ }, | |
1671 | { "schedule-get", 1, 1, c_schedule_get, RIGHT_READ }, | |
1672 | { "schedule-list", 0, 0, c_schedule_list, RIGHT_READ }, | |
eb5dc014 RK |
1673 | { "scratch", 0, 1, c_scratch, RIGHT_SCRATCH__MASK }, |
1674 | { "search", 1, 1, c_search, RIGHT_READ }, | |
1675 | { "set", 3, 3, c_set, RIGHT_PREFS, }, | |
1676 | { "set-global", 2, 2, c_set_global, RIGHT_GLOBAL_PREFS }, | |
1677 | { "shutdown", 0, 0, c_shutdown, RIGHT_ADMIN }, | |
1678 | { "stats", 0, 0, c_stats, RIGHT_READ }, | |
1679 | { "tags", 0, 0, c_tags, RIGHT_READ }, | |
1680 | { "unset", 2, 2, c_set, RIGHT_PREFS }, | |
1681 | { "unset-global", 1, 1, c_set_global, RIGHT_GLOBAL_PREFS }, | |
460b9539 | 1682 | { "user", 2, 2, c_user, 0 }, |
eb5dc014 RK |
1683 | { "userinfo", 2, 2, c_userinfo, RIGHT_READ }, |
1684 | { "users", 0, 0, c_users, RIGHT_READ }, | |
1685 | { "version", 0, 0, c_version, RIGHT_READ }, | |
1686 | { "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME } | |
460b9539 | 1687 | }; |
1688 | ||
1689 | static void command_error(const char *msg, void *u) { | |
1690 | struct conn *c = u; | |
1691 | ||
1692 | sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg); | |
1693 | } | |
1694 | ||
1695 | /* process a command. Return 1 if complete, 0 if incomplete. */ | |
1696 | static int command(struct conn *c, char *line) { | |
1697 | char **vec; | |
1698 | int nvec, n; | |
1699 | ||
1700 | D(("server command %s", line)); | |
f9635e06 RK |
1701 | /* We force everything into NFC as early as possible */ |
1702 | if(!(line = utf8_compose_canon(line, strlen(line), 0))) { | |
1703 | sink_writes(ev_writer_sink(c->w), "500 cannot normalize command\n"); | |
1704 | return 1; | |
1705 | } | |
460b9539 | 1706 | if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) { |
1707 | sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n"); | |
1708 | return 1; | |
1709 | } | |
1710 | if(nvec == 0) { | |
1711 | sink_writes(ev_writer_sink(c->w), "500 do what?\n"); | |
1712 | return 1; | |
1713 | } | |
1714 | if((n = TABLE_FIND(commands, struct command, name, vec[0])) < 0) | |
1715 | sink_writes(ev_writer_sink(c->w), "500 unknown command\n"); | |
1716 | else { | |
eb5dc014 RK |
1717 | if(commands[n].rights |
1718 | && !(c->rights & commands[n].rights)) { | |
834e7c4a | 1719 | error(0, "%s attempted %s but lacks required rights", c->who ? c->who : "NULL", |
1720 | commands[n].name); | |
b4a80f69 | 1721 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
460b9539 | 1722 | return 1; |
1723 | } | |
1724 | ++vec; | |
1725 | --nvec; | |
1726 | if(nvec < commands[n].minargs) { | |
1727 | sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n"); | |
1728 | return 1; | |
1729 | } | |
1730 | if(nvec > commands[n].maxargs) { | |
1731 | sink_writes(ev_writer_sink(c->w), "500 too many arguments\n"); | |
1732 | return 1; | |
1733 | } | |
1734 | return commands[n].fn(c, vec, nvec); | |
1735 | } | |
1736 | return 1; /* completed */ | |
1737 | } | |
1738 | ||
1739 | /* redirect to the right reader callback for our current state */ | |
1740 | static int redirect_reader_callback(ev_source *ev, | |
1741 | ev_reader *reader, | |
460b9539 | 1742 | void *ptr, |
1743 | size_t bytes, | |
1744 | int eof, | |
1745 | void *u) { | |
1746 | struct conn *c = u; | |
1747 | ||
75d64210 | 1748 | return c->reader(ev, reader, ptr, bytes, eof, u); |
460b9539 | 1749 | } |
1750 | ||
1751 | /* the main command reader */ | |
1752 | static int reader_callback(ev_source attribute((unused)) *ev, | |
1753 | ev_reader *reader, | |
460b9539 | 1754 | void *ptr, |
1755 | size_t bytes, | |
1756 | int eof, | |
1757 | void *u) { | |
1758 | struct conn *c = u; | |
1759 | char *eol; | |
1760 | int complete; | |
1761 | ||
1762 | D(("server reader_callback")); | |
1763 | while((eol = memchr(ptr, '\n', bytes))) { | |
1764 | *eol++ = 0; | |
1765 | ev_reader_consume(reader, eol - (char *)ptr); | |
1766 | complete = command(c, ptr); | |
1767 | bytes -= (eol - (char *)ptr); | |
1768 | ptr = eol; | |
1769 | if(!complete) { | |
1770 | /* the command had better have set a new reader callback */ | |
1771 | if(bytes || eof) | |
1772 | /* there are further bytes to read, or we are at eof; arrange for the | |
1773 | * command's reader callback to handle them */ | |
1774 | return ev_reader_incomplete(reader); | |
1775 | /* nothing's going on right now */ | |
1776 | return 0; | |
1777 | } | |
1778 | /* command completed, we can go around and handle the next one */ | |
1779 | } | |
1780 | if(eof) { | |
1781 | if(bytes) | |
1782 | error(0, "S%x unterminated line", c->tag); | |
8d8b8c1f | 1783 | D(("normal reader close")); |
397ef7bb RK |
1784 | c->r = 0; |
1785 | if(c->w) { | |
8d8b8c1f | 1786 | D(("close associated writer")); |
397ef7bb RK |
1787 | ev_writer_close(c->w); |
1788 | c->w = 0; | |
1789 | } | |
0126692c | 1790 | remove_connection(c); |
460b9539 | 1791 | } |
1792 | return 0; | |
1793 | } | |
1794 | ||
1795 | static int listen_callback(ev_source *ev, | |
1796 | int fd, | |
1797 | const struct sockaddr attribute((unused)) *remote, | |
1798 | socklen_t attribute((unused)) rlen, | |
1799 | void *u) { | |
1800 | const struct listener *l = u; | |
1801 | struct conn *c = xmalloc(sizeof *c); | |
1802 | static unsigned tags; | |
1803 | ||
1804 | D(("server listen_callback fd %d (%s)", fd, l->name)); | |
1805 | nonblock(fd); | |
1806 | cloexec(fd); | |
1807 | c->tag = tags++; | |
1808 | c->ev = ev; | |
e8c92ba7 RK |
1809 | c->w = ev_writer_new(ev, fd, writer_error, c, |
1810 | "client writer"); | |
1811 | c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c, | |
1812 | "client reader"); | |
75d64210 | 1813 | ev_tie(c->r, c->w); |
460b9539 | 1814 | c->fd = fd; |
1815 | c->reader = reader_callback; | |
1816 | c->l = l; | |
eb5dc014 | 1817 | c->rights = 0; |
460b9539 | 1818 | gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM); |
7b32e917 RK |
1819 | sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n", |
1820 | 2, | |
b3141726 RK |
1821 | config->authorization_algorithm, |
1822 | hex(c->nonce, sizeof c->nonce)); | |
460b9539 | 1823 | return 0; |
1824 | } | |
1825 | ||
1826 | int server_start(ev_source *ev, int pf, | |
1827 | size_t socklen, const struct sockaddr *sa, | |
1828 | const char *name) { | |
1829 | int fd; | |
1830 | struct listener *l = xmalloc(sizeof *l); | |
1831 | static const int one = 1; | |
1832 | ||
1833 | D(("server_init socket %s", name)); | |
1834 | fd = xsocket(pf, SOCK_STREAM, 0); | |
1835 | xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); | |
1836 | if(bind(fd, sa, socklen) < 0) { | |
1837 | error(errno, "error binding to %s", name); | |
1838 | return -1; | |
1839 | } | |
1840 | xlisten(fd, 128); | |
1841 | nonblock(fd); | |
1842 | cloexec(fd); | |
1843 | l->name = name; | |
1844 | l->pf = pf; | |
e8c92ba7 RK |
1845 | if(ev_listen(ev, fd, listen_callback, l, "server listener")) |
1846 | exit(EXIT_FAILURE); | |
460b9539 | 1847 | return fd; |
1848 | } | |
1849 | ||
1850 | int server_stop(ev_source *ev, int fd) { | |
1851 | xclose(fd); | |
1852 | return ev_listen_cancel(ev, fd); | |
1853 | } | |
1854 | ||
1855 | /* | |
1856 | Local Variables: | |
1857 | c-basic-offset:2 | |
1858 | comment-column:40 | |
1859 | fill-column:79 | |
1860 | End: | |
1861 | */ |