Commit | Line | Data |
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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
53710d44 | 3 | * Copyright (C) 2004-2009 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]; | |
460b9539 | 121 | }; |
122 | ||
0126692c | 123 | /** @brief Linked list of connections */ |
124 | static struct conn *connections; | |
125 | ||
460b9539 | 126 | static int reader_callback(ev_source *ev, |
127 | ev_reader *reader, | |
460b9539 | 128 | void *ptr, |
129 | size_t bytes, | |
130 | int eof, | |
131 | void *u); | |
f65f5aff RK |
132 | static int c_playlist_set_body(struct conn *c, |
133 | char **body, | |
134 | int nbody, | |
135 | void *u); | |
136 | static int fetch_body(struct conn *c, | |
137 | body_callback_type body_callback, | |
138 | void *u); | |
139 | static int body_line(struct conn *c, char *line); | |
140 | static int command(struct conn *c, char *line); | |
460b9539 | 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) | |
2e9ba080 | 169 | disorder_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)); |
2e9ba080 | 193 | disorder_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) | |
9439cdab | 205 | disable_playing(c->who, c->ev); |
460b9539 | 206 | else if(nvec == 1 && !strcmp(vec[0], "now")) |
9439cdab | 207 | disable_playing(c->who, c->ev); |
460b9539 | 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 | } | |
7a853280 | 246 | q = queue_add(track, c->who, WHERE_BEFORE_RANDOM, NULL, origin_picked); |
460b9539 | 247 | queue_write(); |
81e440ce | 248 | sink_printf(ev_writer_sink(c->w), "252 %s\n", q->id); |
7a853280 RK |
249 | /* We make sure the track at the head of the queue is prepared, just in case |
250 | * we added it. We could be more subtle but prepare() will ensure we don't | |
251 | * prepare the same track twice so there's no point. */ | |
252 | if(qhead.next != &qhead) | |
253 | prepare(c->ev, qhead.next); | |
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 | ||
7a853280 RK |
261 | static int c_playafter(struct conn *c, char **vec, |
262 | int attribute((unused)) nvec) { | |
263 | const char *track; | |
264 | struct queue_entry *q; | |
265 | const char *afterme = vec[0]; | |
266 | ||
267 | for(int n = 1; n < nvec; ++n) { | |
268 | if(!trackdb_exists(vec[n])) { | |
269 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
270 | return 1; | |
271 | } | |
272 | if(!(track = trackdb_resolve(vec[n]))) { | |
273 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
274 | return 1; | |
275 | } | |
276 | q = queue_add(track, c->who, WHERE_AFTER, afterme, origin_picked); | |
277 | if(!q) { | |
278 | sink_printf(ev_writer_sink(c->w), "550 No such ID\n"); | |
279 | return 1; | |
280 | } | |
2e9ba080 | 281 | disorder_info("added %s as %s after %s", track, q->id, afterme); |
7a853280 RK |
282 | afterme = q->id; |
283 | } | |
284 | queue_write(); | |
285 | sink_printf(ev_writer_sink(c->w), "252 OK\n"); | |
286 | /* We make sure the track at the head of the queue is prepared, just in case | |
287 | * we added it. We could be more subtle but prepare() will ensure we don't | |
288 | * prepare the same track twice so there's no point. */ | |
289 | if(qhead.next != &qhead) { | |
290 | prepare(c->ev, qhead.next); | |
2e9ba080 | 291 | disorder_info("prepared %s", qhead.next->id); |
7a853280 RK |
292 | } |
293 | /* If the queue was empty but we are for some reason paused then | |
294 | * unpause. */ | |
295 | if(!playing) | |
296 | resume_playing(0); | |
297 | play(c->ev); | |
298 | return 1; /* completed */ | |
299 | } | |
300 | ||
460b9539 | 301 | static int c_remove(struct conn *c, char **vec, |
302 | int attribute((unused)) nvec) { | |
303 | struct queue_entry *q; | |
304 | ||
305 | if(!(q = queue_find(vec[0]))) { | |
306 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
307 | return 1; | |
308 | } | |
938d8157 | 309 | if(!right_removable(c->rights, c->who, q)) { |
2e9ba080 | 310 | disorder_error(0, "%s attempted remove but lacks required rights", c->who); |
eb5dc014 | 311 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 312 | "510 Not authorized to remove that track\n"); |
eb5dc014 | 313 | return 1; |
460b9539 | 314 | } |
315 | queue_remove(q, c->who); | |
316 | /* De-prepare the track. */ | |
317 | abandon(c->ev, q); | |
49a773eb RK |
318 | /* See about adding a new random track */ |
319 | add_random_track(c->ev); | |
460b9539 | 320 | /* Prepare whatever the next head track is. */ |
321 | if(qhead.next != &qhead) | |
322 | prepare(c->ev, qhead.next); | |
323 | queue_write(); | |
324 | sink_writes(ev_writer_sink(c->w), "250 removed\n"); | |
325 | return 1; /* completed */ | |
326 | } | |
327 | ||
328 | static int c_scratch(struct conn *c, | |
329 | char **vec, | |
330 | int nvec) { | |
331 | if(!playing) { | |
332 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
333 | return 1; /* completed */ | |
334 | } | |
eb5dc014 RK |
335 | /* TODO there is a bug here: if we specify an ID but it's not the currently |
336 | * playing track then you will get 550 if you weren't authorized to scratch | |
337 | * the currently playing track. */ | |
938d8157 | 338 | if(!right_scratchable(c->rights, c->who, playing)) { |
2e9ba080 | 339 | disorder_error(0, "%s attempted scratch but lacks required rights", c->who); |
eb5dc014 | 340 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 341 | "510 Not authorized to scratch that track\n"); |
eb5dc014 | 342 | return 1; |
460b9539 | 343 | } |
344 | scratch(c->who, nvec == 1 ? vec[0] : 0); | |
345 | /* If you scratch an unpaused track then it is automatically unpaused */ | |
346 | resume_playing(0); | |
347 | sink_writes(ev_writer_sink(c->w), "250 scratched\n"); | |
348 | return 1; /* completed */ | |
349 | } | |
350 | ||
351 | static int c_pause(struct conn *c, | |
352 | char attribute((unused)) **vec, | |
353 | int attribute((unused)) nvec) { | |
354 | if(!playing) { | |
355 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
356 | return 1; /* completed */ | |
357 | } | |
358 | if(paused) { | |
359 | sink_writes(ev_writer_sink(c->w), "250 already paused\n"); | |
360 | return 1; /* completed */ | |
361 | } | |
362 | if(pause_playing(c->who) < 0) | |
363 | sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n"); | |
364 | else | |
365 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
366 | return 1; | |
367 | } | |
368 | ||
369 | static int c_resume(struct conn *c, | |
370 | char attribute((unused)) **vec, | |
371 | int attribute((unused)) nvec) { | |
372 | if(!paused) { | |
373 | sink_writes(ev_writer_sink(c->w), "250 not paused\n"); | |
374 | return 1; /* completed */ | |
375 | } | |
376 | resume_playing(c->who); | |
377 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
378 | return 1; | |
379 | } | |
380 | ||
381 | static int c_shutdown(struct conn *c, | |
382 | char attribute((unused)) **vec, | |
383 | int attribute((unused)) nvec) { | |
2e9ba080 | 384 | disorder_info("S%x shut down by %s", c->tag, c->who); |
460b9539 | 385 | sink_writes(ev_writer_sink(c->w), "250 shutting down\n"); |
386 | ev_writer_flush(c->w); | |
387 | quit(c->ev); | |
388 | } | |
389 | ||
390 | static int c_reconfigure(struct conn *c, | |
391 | char attribute((unused)) **vec, | |
392 | int attribute((unused)) nvec) { | |
2e9ba080 | 393 | disorder_info("S%x reconfigure by %s", c->tag, c->who); |
460b9539 | 394 | if(reconfigure(c->ev, 1)) |
395 | sink_writes(ev_writer_sink(c->w), "550 error reading new config\n"); | |
396 | else | |
397 | sink_writes(ev_writer_sink(c->w), "250 installed new config\n"); | |
398 | return 1; /* completed */ | |
399 | } | |
400 | ||
dd9af5cb RK |
401 | static void finished_rescan(void *ru) { |
402 | struct conn *const c = ru; | |
403 | ||
404 | sink_writes(ev_writer_sink(c->w), "250 rescan completed\n"); | |
405 | /* Turn this connection back on */ | |
406 | ev_reader_enable(c->r); | |
407 | } | |
408 | ||
409 | static void start_fresh_rescan(void *ru) { | |
410 | struct conn *const c = ru; | |
411 | ||
412 | if(trackdb_rescan_underway()) { | |
413 | /* Some other waiter beat us to it. However in this case we're happy to | |
414 | * piggyback; the requirement is that a new rescan be started, not that it | |
415 | * was _our_ rescan. */ | |
416 | if(c->rescan_wait) { | |
417 | /* We block until the rescan completes */ | |
418 | trackdb_add_rescanned(finished_rescan, c); | |
419 | } else { | |
420 | /* We report that the new rescan has started */ | |
421 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
422 | /* Turn this connection back on */ | |
423 | ev_reader_enable(c->r); | |
424 | } | |
425 | } else { | |
426 | /* We are the first connection to get a callback so we must start a | |
427 | * rescan. */ | |
428 | if(c->rescan_wait) { | |
429 | /* We want to block until the new rescan completes */ | |
430 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
431 | } else { | |
432 | /* We can report back immediately */ | |
433 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
434 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
435 | /* Turn this connection back on */ | |
436 | ev_reader_enable(c->r); | |
437 | } | |
438 | } | |
439 | } | |
440 | ||
460b9539 | 441 | static int c_rescan(struct conn *c, |
dd9af5cb RK |
442 | char **vec, |
443 | int nvec) { | |
d867af10 | 444 | int flag_wait = 0, flag_fresh = 0, n; |
dd9af5cb RK |
445 | |
446 | /* Parse flags */ | |
447 | for(n = 0; n < nvec; ++n) { | |
448 | if(!strcmp(vec[n], "wait")) | |
d867af10 | 449 | flag_wait = 1; /* wait for rescan to complete */ |
dd9af5cb RK |
450 | #if 0 |
451 | /* Currently disabled because untested (and hard to test). */ | |
452 | else if(!strcmp(vec[n], "fresh")) | |
d867af10 | 453 | flag_fresh = 1; /* don't piggyback underway rescan */ |
dd9af5cb RK |
454 | #endif |
455 | else { | |
456 | sink_writes(ev_writer_sink(c->w), "550 unknown flag\n"); | |
457 | return 1; /* completed */ | |
458 | } | |
459 | } | |
460 | /* Report what was requested */ | |
2e9ba080 RK |
461 | disorder_info("S%x rescan by %s (%s %s)", c->tag, c->who, |
462 | flag_wait ? "wait" : "", | |
463 | flag_fresh ? "fresh" : ""); | |
dd9af5cb | 464 | if(trackdb_rescan_underway()) { |
d867af10 | 465 | if(flag_fresh) { |
dd9af5cb RK |
466 | /* We want a fresh rescan but there is already one underway. Arrange a |
467 | * callback when it completes and then set off a new one. */ | |
d867af10 | 468 | c->rescan_wait = flag_wait; |
dd9af5cb | 469 | trackdb_add_rescanned(start_fresh_rescan, c); |
d867af10 | 470 | if(flag_wait) |
dd9af5cb RK |
471 | return 0; |
472 | else { | |
473 | sink_writes(ev_writer_sink(c->w), "250 rescan queued\n"); | |
474 | return 1; | |
475 | } | |
476 | } else { | |
477 | /* There's a rescan underway, and it's acceptable to piggyback on it */ | |
d867af10 | 478 | if(flag_wait) { |
dd9af5cb RK |
479 | /* We want to block until completion. */ |
480 | trackdb_add_rescanned(finished_rescan, c); | |
481 | return 0; | |
482 | } else { | |
483 | /* We don't want to block. So we just report that things are in | |
484 | * hand. */ | |
485 | sink_writes(ev_writer_sink(c->w), "250 rescan already underway\n"); | |
486 | return 1; | |
487 | } | |
488 | } | |
489 | } else { | |
490 | /* No rescan is underway. fresh is therefore irrelevant. */ | |
d867af10 | 491 | if(flag_wait) { |
dd9af5cb RK |
492 | /* We want to block until completion */ |
493 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
494 | return 0; | |
495 | } else { | |
496 | /* We don't want to block. */ | |
497 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
498 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
499 | return 1; /* completed */ | |
500 | } | |
501 | } | |
460b9539 | 502 | } |
503 | ||
504 | static int c_version(struct conn *c, | |
505 | char attribute((unused)) **vec, | |
506 | int attribute((unused)) nvec) { | |
507 | /* VERSION had better only use the basic character set */ | |
a05e4467 | 508 | sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_short_version_string); |
460b9539 | 509 | return 1; /* completed */ |
510 | } | |
511 | ||
512 | static int c_playing(struct conn *c, | |
513 | char attribute((unused)) **vec, | |
514 | int attribute((unused)) nvec) { | |
515 | if(playing) { | |
516 | queue_fix_sofar(playing); | |
517 | playing->expected = 0; | |
518 | sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing)); | |
519 | } else | |
520 | sink_printf(ev_writer_sink(c->w), "259 nothing playing\n"); | |
521 | return 1; /* completed */ | |
522 | } | |
523 | ||
b12be54a | 524 | static const char *connection_host(struct conn *c) { |
460b9539 | 525 | union { |
526 | struct sockaddr sa; | |
527 | struct sockaddr_in in; | |
528 | struct sockaddr_in6 in6; | |
529 | } u; | |
530 | socklen_t l; | |
b12be54a | 531 | int n; |
460b9539 | 532 | char host[1024]; |
533 | ||
460b9539 | 534 | /* get connection data */ |
535 | l = sizeof u; | |
536 | if(getpeername(c->fd, &u.sa, &l) < 0) { | |
2e9ba080 | 537 | disorder_error(errno, "S%x error calling getpeername", c->tag); |
b12be54a | 538 | return 0; |
460b9539 | 539 | } |
540 | if(c->l->pf != PF_UNIX) { | |
541 | if((n = getnameinfo(&u.sa, l, | |
542 | host, sizeof host, 0, 0, NI_NUMERICHOST))) { | |
2e9ba080 RK |
543 | disorder_error(0, "S%x error calling getnameinfo: %s", |
544 | c->tag, gai_strerror(n)); | |
b12be54a | 545 | return 0; |
460b9539 | 546 | } |
b12be54a | 547 | return xstrdup(host); |
18e6d6e6 | 548 | } else |
b12be54a RK |
549 | return "local"; |
550 | } | |
551 | ||
552 | static int c_user(struct conn *c, | |
553 | char **vec, | |
554 | int attribute((unused)) nvec) { | |
eb5dc014 | 555 | struct kvp *k; |
f0feb22e | 556 | const char *res, *host, *password; |
eb5dc014 | 557 | rights_type rights; |
b12be54a RK |
558 | |
559 | if(c->who) { | |
560 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
561 | return 1; | |
562 | } | |
563 | /* get connection data */ | |
564 | if(!(host = connection_host(c))) { | |
565 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
566 | return 1; | |
567 | } | |
460b9539 | 568 | /* find the user */ |
eb5dc014 | 569 | k = trackdb_getuserinfo(vec[0]); |
f0feb22e | 570 | /* reject nonexistent users */ |
eb5dc014 | 571 | if(!k) { |
2e9ba080 | 572 | disorder_error(0, "S%x unknown user '%s' from %s", c->tag, vec[0], host); |
eb5dc014 RK |
573 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
574 | return 1; | |
575 | } | |
576 | /* reject unconfirmed users */ | |
577 | if(kvp_get(k, "confirmation")) { | |
2e9ba080 RK |
578 | disorder_error(0, "S%x unconfirmed user '%s' from %s", |
579 | c->tag, vec[0], host); | |
eb5dc014 RK |
580 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
581 | return 1; | |
582 | } | |
583 | password = kvp_get(k, "password"); | |
584 | if(!password) password = ""; | |
0f55e905 | 585 | if(parse_rights(kvp_get(k, "rights"), &rights, 1)) { |
2e9ba080 | 586 | disorder_error(0, "error parsing rights for %s", vec[0]); |
18e6d6e6 | 587 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
588 | return 1; | |
589 | } | |
f0feb22e RK |
590 | /* check whether the response is right */ |
591 | res = authhash(c->nonce, sizeof c->nonce, password, | |
637fdea3 | 592 | config->authorization_algorithm); |
de37b640 | 593 | if(wideopen || c->l->privileged || (res && !strcmp(res, vec[1]))) { |
18e6d6e6 | 594 | c->who = vec[0]; |
eb5dc014 | 595 | c->rights = rights; |
18e6d6e6 | 596 | /* currently we only bother logging remote connections */ |
30365519 | 597 | if(strcmp(host, "local")) |
2e9ba080 | 598 | disorder_info("S%x %s connected from %s", c->tag, vec[0], host); |
30365519 | 599 | else |
eb5dc014 | 600 | c->rights |= RIGHT__LOCAL; |
18e6d6e6 | 601 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); |
602 | return 1; | |
460b9539 | 603 | } |
604 | /* oops, response was wrong */ | |
2e9ba080 RK |
605 | disorder_info("S%x authentication failure for %s from %s", |
606 | c->tag, vec[0], host); | |
460b9539 | 607 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
608 | return 1; | |
609 | } | |
610 | ||
611 | static int c_recent(struct conn *c, | |
612 | char attribute((unused)) **vec, | |
613 | int attribute((unused)) nvec) { | |
614 | const struct queue_entry *q; | |
615 | ||
616 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
617 | for(q = phead.next; q != &phead; q = q->next) | |
618 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
619 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
620 | return 1; /* completed */ | |
621 | } | |
622 | ||
623 | static int c_queue(struct conn *c, | |
624 | char attribute((unused)) **vec, | |
625 | int attribute((unused)) nvec) { | |
626 | struct queue_entry *q; | |
627 | time_t when = 0; | |
628 | const char *l; | |
629 | long length; | |
630 | ||
631 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
632 | if(playing_is_enabled() && !paused) { | |
633 | if(playing) { | |
634 | queue_fix_sofar(playing); | |
635 | if((l = trackdb_get(playing->track, "_length")) | |
636 | && (length = atol(l))) { | |
4265e5d3 | 637 | xtime(&when); |
657fdb79 | 638 | when += length - playing->sofar; |
460b9539 | 639 | } |
640 | } else | |
641 | /* Nothing is playing but playing is enabled, so whatever is | |
642 | * first in the queue can be expected to start immediately. */ | |
4265e5d3 | 643 | xtime(&when); |
460b9539 | 644 | } |
645 | for(q = qhead.next; q != &qhead; q = q->next) { | |
646 | /* fill in estimated start time */ | |
647 | q->expected = when; | |
648 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
649 | /* update for next track */ | |
650 | if(when) { | |
651 | if((l = trackdb_get(q->track, "_length")) | |
652 | && (length = atol(l))) | |
657fdb79 | 653 | when += length; |
460b9539 | 654 | else |
655 | when = 0; | |
656 | } | |
657 | } | |
658 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
659 | return 1; /* completed */ | |
660 | } | |
661 | ||
662 | static int output_list(struct conn *c, char **vec) { | |
663 | while(*vec) | |
664 | sink_printf(ev_writer_sink(c->w), "%s\n", *vec++); | |
665 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
666 | return 1; | |
667 | } | |
668 | ||
669 | static int files_dirs(struct conn *c, | |
670 | char **vec, | |
671 | int nvec, | |
672 | enum trackdb_listable what) { | |
673 | const char *dir, *re, *errstr; | |
674 | int erroffset; | |
675 | pcre *rec; | |
676 | char **fvec, *key; | |
677 | ||
678 | switch(nvec) { | |
679 | case 0: dir = 0; re = 0; break; | |
680 | case 1: dir = vec[0]; re = 0; break; | |
681 | case 2: dir = vec[0]; re = vec[1]; break; | |
682 | default: abort(); | |
683 | } | |
684 | /* A bit of a bodge to make sure the args don't trample on cache keys */ | |
685 | if(dir && strchr(dir, '\n')) { | |
686 | sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n"); | |
687 | return 1; | |
688 | } | |
689 | if(re && strchr(re, '\n')) { | |
690 | sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n"); | |
691 | return 1; | |
692 | } | |
693 | /* We bother eliminating "" because the web interface is relatively | |
694 | * likely to send it */ | |
695 | if(re && *re) { | |
696 | byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re); | |
697 | fvec = (char **)cache_get(&cache_files_type, key); | |
698 | if(fvec) { | |
699 | /* Got a cache hit, don't store the answer in the cache */ | |
700 | key = 0; | |
701 | ++cache_files_hits; | |
702 | rec = 0; /* quieten compiler */ | |
703 | } else { | |
704 | /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer | |
705 | * in the cache. */ | |
706 | if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8, | |
707 | &errstr, &erroffset, 0))) { | |
708 | sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n", | |
709 | errstr); | |
710 | return 1; | |
711 | } | |
712 | /* It only counts as a miss if the regexp was valid. */ | |
713 | ++cache_files_misses; | |
714 | } | |
715 | } else { | |
716 | /* No regexp, don't bother caching the result */ | |
717 | rec = 0; | |
718 | key = 0; | |
719 | fvec = 0; | |
720 | } | |
721 | if(!fvec) { | |
722 | /* No cache hit (either because a miss, or because we did not look) so do | |
723 | * the lookup */ | |
724 | if(dir && *dir) | |
725 | fvec = trackdb_list(dir, 0, what, rec); | |
726 | else | |
727 | fvec = trackdb_list(0, 0, what, rec); | |
728 | } | |
729 | if(key) | |
730 | /* Put the answer in the cache */ | |
731 | cache_put(&cache_files_type, key, fvec); | |
732 | sink_writes(ev_writer_sink(c->w), "253 Listing follow\n"); | |
733 | return output_list(c, fvec); | |
734 | } | |
735 | ||
736 | static int c_files(struct conn *c, | |
737 | char **vec, | |
738 | int nvec) { | |
739 | return files_dirs(c, vec, nvec, trackdb_files); | |
740 | } | |
741 | ||
742 | static int c_dirs(struct conn *c, | |
743 | char **vec, | |
744 | int nvec) { | |
745 | return files_dirs(c, vec, nvec, trackdb_directories); | |
746 | } | |
747 | ||
748 | static int c_allfiles(struct conn *c, | |
749 | char **vec, | |
750 | int nvec) { | |
751 | return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files); | |
752 | } | |
753 | ||
754 | static int c_get(struct conn *c, | |
755 | char **vec, | |
756 | int attribute((unused)) nvec) { | |
27ed5a69 | 757 | const char *v, *track; |
460b9539 | 758 | |
27ed5a69 RK |
759 | if(!(track = trackdb_resolve(vec[0]))) { |
760 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
761 | return 1; | |
762 | } | |
763 | if(vec[1][0] != '_' && (v = trackdb_get(track, vec[1]))) | |
7b32e917 | 764 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 765 | else |
fb1bc1f5 | 766 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 767 | return 1; |
768 | } | |
769 | ||
770 | static int c_length(struct conn *c, | |
771 | char **vec, | |
772 | int attribute((unused)) nvec) { | |
773 | const char *track, *v; | |
774 | ||
775 | if(!(track = trackdb_resolve(vec[0]))) { | |
776 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
777 | return 1; | |
778 | } | |
779 | if((v = trackdb_get(track, "_length"))) | |
7b32e917 | 780 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 781 | else |
782 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
783 | return 1; | |
784 | } | |
785 | ||
786 | static int c_set(struct conn *c, | |
787 | char **vec, | |
788 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
789 | const char *track; |
790 | ||
791 | if(!(track = trackdb_resolve(vec[0]))) { | |
792 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
793 | return 1; | |
794 | } | |
795 | if(vec[1][0] != '_' && !trackdb_set(track, vec[1], vec[2])) | |
460b9539 | 796 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
797 | else | |
798 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
799 | return 1; | |
800 | } | |
801 | ||
802 | static int c_prefs(struct conn *c, | |
803 | char **vec, | |
804 | int attribute((unused)) nvec) { | |
805 | struct kvp *k; | |
27ed5a69 | 806 | const char *track; |
460b9539 | 807 | |
27ed5a69 RK |
808 | if(!(track = trackdb_resolve(vec[0]))) { |
809 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
810 | return 1; | |
811 | } | |
812 | k = trackdb_get_all(track); | |
460b9539 | 813 | sink_writes(ev_writer_sink(c->w), "253 prefs follow\n"); |
814 | for(; k; k = k->next) | |
815 | if(k->name[0] != '_') /* omit internal values */ | |
816 | sink_printf(ev_writer_sink(c->w), | |
817 | " %s %s\n", quoteutf8(k->name), quoteutf8(k->value)); | |
818 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
819 | return 1; | |
820 | } | |
821 | ||
822 | static int c_exists(struct conn *c, | |
823 | char **vec, | |
824 | int attribute((unused)) nvec) { | |
27ed5a69 | 825 | /* trackdb_exists() does its own alias checking */ |
460b9539 | 826 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]); |
827 | return 1; | |
828 | } | |
829 | ||
830 | static void search_parse_error(const char *msg, void *u) { | |
831 | *(const char **)u = msg; | |
832 | } | |
833 | ||
834 | static int c_search(struct conn *c, | |
835 | char **vec, | |
836 | int attribute((unused)) nvec) { | |
837 | char **terms, **results; | |
838 | int nterms, nresults, n; | |
839 | const char *e = "unknown error"; | |
840 | ||
841 | /* This is a bit of a bodge. Initially it's there to make the eclient | |
842 | * interface a bit more convenient to add searching to, but it has the more | |
843 | * compelling advantage that if everything uses it, then interpretation of | |
844 | * user-supplied search strings will be the same everywhere. */ | |
845 | if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) { | |
846 | sink_printf(ev_writer_sink(c->w), "550 %s\n", e); | |
847 | } else { | |
848 | results = trackdb_search(terms, nterms, &nresults); | |
849 | sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults); | |
850 | for(n = 0; n < nresults; ++n) | |
851 | sink_printf(ev_writer_sink(c->w), "%s\n", results[n]); | |
852 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
853 | } | |
854 | return 1; | |
855 | } | |
856 | ||
857 | static int c_random_enable(struct conn *c, | |
858 | char attribute((unused)) **vec, | |
859 | int attribute((unused)) nvec) { | |
860 | enable_random(c->who, c->ev); | |
861 | /* Enable implicitly unpauses if there is nothing playing */ | |
862 | if(paused && !playing) resume_playing(c->who); | |
863 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
864 | return 1; /* completed */ | |
865 | } | |
866 | ||
867 | static int c_random_disable(struct conn *c, | |
868 | char attribute((unused)) **vec, | |
869 | int attribute((unused)) nvec) { | |
9439cdab | 870 | disable_random(c->who, c->ev); |
460b9539 | 871 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
872 | return 1; /* completed */ | |
873 | } | |
874 | ||
875 | static int c_random_enabled(struct conn *c, | |
876 | char attribute((unused)) **vec, | |
877 | int attribute((unused)) nvec) { | |
878 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]); | |
879 | return 1; /* completed */ | |
880 | } | |
881 | ||
d6dde5a3 RK |
882 | static void got_stats(char *stats, void *u) { |
883 | struct conn *const c = u; | |
884 | ||
885 | sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats); | |
886 | /* Now we can start processing commands again */ | |
887 | ev_reader_enable(c->r); | |
888 | } | |
889 | ||
460b9539 | 890 | static int c_stats(struct conn *c, |
891 | char attribute((unused)) **vec, | |
892 | int attribute((unused)) nvec) { | |
d6dde5a3 RK |
893 | trackdb_stats_subprocess(c->ev, got_stats, c); |
894 | return 0; /* not yet complete */ | |
460b9539 | 895 | } |
896 | ||
897 | static int c_volume(struct conn *c, | |
898 | char **vec, | |
899 | int nvec) { | |
900 | int l, r, set; | |
901 | char lb[32], rb[32]; | |
eb5dc014 | 902 | rights_type rights; |
460b9539 | 903 | |
904 | switch(nvec) { | |
905 | case 0: | |
906 | set = 0; | |
907 | break; | |
908 | case 1: | |
909 | l = r = atoi(vec[0]); | |
910 | set = 1; | |
911 | break; | |
912 | case 2: | |
913 | l = atoi(vec[0]); | |
914 | r = atoi(vec[1]); | |
915 | set = 1; | |
916 | break; | |
917 | default: | |
918 | abort(); | |
919 | } | |
eb5dc014 RK |
920 | rights = set ? RIGHT_VOLUME : RIGHT_READ; |
921 | if(!(c->rights & rights)) { | |
2e9ba080 RK |
922 | disorder_error(0, "%s attempted to set volume but lacks required rights", |
923 | c->who); | |
b4a80f69 | 924 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
eb5dc014 RK |
925 | return 1; |
926 | } | |
b50cfb8a | 927 | if(!api || !api->set_volume) { |
460b9539 | 928 | sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n"); |
b50cfb8a RK |
929 | return 1; |
930 | } | |
e4d0463f | 931 | (set ? api->set_volume : api->get_volume)(&l, &r); |
b50cfb8a RK |
932 | sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r); |
933 | if(l != volume_left || r != volume_right) { | |
934 | volume_left = l; | |
935 | volume_right = r; | |
936 | snprintf(lb, sizeof lb, "%d", l); | |
937 | snprintf(rb, sizeof rb, "%d", r); | |
938 | eventlog("volume", lb, rb, (char *)0); | |
460b9539 | 939 | } |
940 | return 1; | |
941 | } | |
942 | ||
397ef7bb RK |
943 | /** @brief Called when data arrives on a log connection |
944 | * | |
945 | * We just discard all such data. The client may occasionally send data as a | |
946 | * keepalive. | |
947 | */ | |
948 | static int logging_reader_callback(ev_source attribute((unused)) *ev, | |
460b9539 | 949 | ev_reader *reader, |
397ef7bb | 950 | void attribute((unused)) *ptr, |
460b9539 | 951 | size_t bytes, |
397ef7bb RK |
952 | int attribute((unused)) eof, |
953 | void attribute((unused)) *u) { | |
460b9539 | 954 | struct conn *c = u; |
955 | ||
397ef7bb RK |
956 | ev_reader_consume(reader, bytes); |
957 | if(eof) { | |
958 | /* Oops, that's all for now */ | |
8d8b8c1f | 959 | D(("logging reader eof")); |
397ef7bb | 960 | if(c->w) { |
8d8b8c1f | 961 | D(("close writer")); |
397ef7bb RK |
962 | ev_writer_close(c->w); |
963 | c->w = 0; | |
964 | } | |
965 | c->r = 0; | |
0126692c | 966 | remove_connection(c); |
f6033c46 | 967 | } |
397ef7bb | 968 | return 0; |
460b9539 | 969 | } |
970 | ||
971 | static void logclient(const char *msg, void *user) { | |
972 | struct conn *c = user; | |
973 | ||
f6033c46 RK |
974 | if(!c->w || !c->r) { |
975 | /* This connection has gone up in smoke for some reason */ | |
976 | eventlog_remove(c->lo); | |
ad492e00 | 977 | c->lo = 0; |
f6033c46 RK |
978 | return; |
979 | } | |
75e7b7c3 RK |
980 | /* user_* messages are restricted */ |
981 | if(!strncmp(msg, "user_", 5)) { | |
58d2aad2 RK |
982 | /* They are only sent to admin users */ |
983 | if(!(c->rights & RIGHT_ADMIN)) | |
984 | return; | |
985 | /* They are not sent over TCP connections unless remote user-management is | |
986 | * enabled */ | |
987 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) | |
988 | return; | |
989 | } | |
460b9539 | 990 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n", |
4265e5d3 | 991 | (uintmax_t)xtime(0), msg); |
460b9539 | 992 | } |
993 | ||
994 | static int c_log(struct conn *c, | |
995 | char attribute((unused)) **vec, | |
996 | int attribute((unused)) nvec) { | |
997 | time_t now; | |
998 | ||
999 | sink_writes(ev_writer_sink(c->w), "254 OK\n"); | |
1000 | /* pump out initial state */ | |
4265e5d3 | 1001 | xtime(&now); |
460b9539 | 1002 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", |
1003 | (uintmax_t)now, | |
1004 | playing_is_enabled() ? "enable_play" : "disable_play"); | |
1005 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
1006 | (uintmax_t)now, | |
1007 | random_is_enabled() ? "enable_random" : "disable_random"); | |
1008 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
1009 | (uintmax_t)now, | |
1010 | paused ? "pause" : "resume"); | |
5abe307a RK |
1011 | if(playing) |
1012 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n", | |
1013 | (uintmax_t)now); | |
df44d69b RK |
1014 | /* Initial volume */ |
1015 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n", | |
1016 | (uintmax_t)now, volume_left, volume_right); | |
460b9539 | 1017 | c->lo = xmalloc(sizeof *c->lo); |
1018 | c->lo->fn = logclient; | |
1019 | c->lo->user = c; | |
1020 | eventlog_add(c->lo); | |
1021 | c->reader = logging_reader_callback; | |
1022 | return 0; | |
1023 | } | |
1024 | ||
eb5dc014 RK |
1025 | /** @brief Test whether a move is allowed |
1026 | * @param c Connection | |
1027 | * @param qs List of IDs on queue | |
1028 | * @param nqs Number of IDs | |
1029 | * @return 0 if move is prohibited, non-0 if it is allowed | |
1030 | */ | |
1031 | static int has_move_rights(struct conn *c, struct queue_entry **qs, int nqs) { | |
eb5dc014 RK |
1032 | for(; nqs > 0; ++qs, --nqs) { |
1033 | struct queue_entry *const q = *qs; | |
1034 | ||
938d8157 | 1035 | if(!right_movable(c->rights, c->who, q)) |
1036 | return 0; | |
eb5dc014 | 1037 | } |
938d8157 | 1038 | return 1; |
eb5dc014 RK |
1039 | } |
1040 | ||
460b9539 | 1041 | static int c_move(struct conn *c, |
1042 | char **vec, | |
1043 | int attribute((unused)) nvec) { | |
1044 | struct queue_entry *q; | |
1045 | int n; | |
1046 | ||
460b9539 | 1047 | if(!(q = queue_find(vec[0]))) { |
1048 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1049 | return 1; | |
1050 | } | |
eb5dc014 | 1051 | if(!has_move_rights(c, &q, 1)) { |
2e9ba080 | 1052 | disorder_error(0, "%s attempted move but lacks required rights", c->who); |
eb5dc014 | 1053 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1054 | "510 Not authorized to move that track\n"); |
eb5dc014 RK |
1055 | return 1; |
1056 | } | |
460b9539 | 1057 | n = queue_move(q, atoi(vec[1]), c->who); |
460b9539 | 1058 | sink_printf(ev_writer_sink(c->w), "252 %d\n", n); |
1059 | /* If we've moved to the head of the queue then prepare the track. */ | |
1060 | if(q == qhead.next) | |
1061 | prepare(c->ev, q); | |
1062 | return 1; | |
1063 | } | |
1064 | ||
1065 | static int c_moveafter(struct conn *c, | |
1066 | char **vec, | |
1067 | int attribute((unused)) nvec) { | |
1068 | struct queue_entry *q, **qs; | |
1069 | int n; | |
1070 | ||
460b9539 | 1071 | if(vec[0][0]) { |
1072 | if(!(q = queue_find(vec[0]))) { | |
1073 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1074 | return 1; | |
1075 | } | |
1076 | } else | |
1077 | q = 0; | |
1078 | ++vec; | |
1079 | --nvec; | |
1080 | qs = xcalloc(nvec, sizeof *qs); | |
1081 | for(n = 0; n < nvec; ++n) | |
1082 | if(!(qs[n] = queue_find(vec[n]))) { | |
1083 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1084 | return 1; | |
1085 | } | |
eb5dc014 | 1086 | if(!has_move_rights(c, qs, nvec)) { |
2e9ba080 RK |
1087 | disorder_error(0, "%s attempted moveafter but lacks required rights", |
1088 | c->who); | |
eb5dc014 | 1089 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1090 | "510 Not authorized to move those tracks\n"); |
eb5dc014 RK |
1091 | return 1; |
1092 | } | |
460b9539 | 1093 | queue_moveafter(q, nvec, qs, c->who); |
460b9539 | 1094 | sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n"); |
1095 | /* If we've moved to the head of the queue then prepare the track. */ | |
1096 | if(q == qhead.next) | |
1097 | prepare(c->ev, q); | |
1098 | return 1; | |
1099 | } | |
1100 | ||
1101 | static int c_part(struct conn *c, | |
1102 | char **vec, | |
1103 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
1104 | const char *track; |
1105 | ||
1106 | if(!(track = trackdb_resolve(vec[0]))) { | |
1107 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1108 | return 1; | |
1109 | } | |
460b9539 | 1110 | sink_printf(ev_writer_sink(c->w), "252 %s\n", |
27ed5a69 | 1111 | quoteutf8(trackdb_getpart(track, vec[1], vec[2]))); |
460b9539 | 1112 | return 1; |
1113 | } | |
1114 | ||
1115 | static int c_resolve(struct conn *c, | |
1116 | char **vec, | |
1117 | int attribute((unused)) nvec) { | |
1118 | const char *track; | |
1119 | ||
1120 | if(!(track = trackdb_resolve(vec[0]))) { | |
1121 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1122 | return 1; | |
1123 | } | |
7b32e917 | 1124 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(track)); |
460b9539 | 1125 | return 1; |
1126 | } | |
1127 | ||
ddbf05c8 RK |
1128 | static int list_response(struct conn *c, |
1129 | const char *reply, | |
1130 | char **list) { | |
1131 | sink_printf(ev_writer_sink(c->w), "253 %s\n", reply); | |
1132 | while(*list) { | |
460b9539 | 1133 | sink_printf(ev_writer_sink(c->w), "%s%s\n", |
ddbf05c8 RK |
1134 | **list == '.' ? "." : "", *list); |
1135 | ++list; | |
460b9539 | 1136 | } |
1137 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1138 | return 1; /* completed */ | |
460b9539 | 1139 | } |
1140 | ||
ddbf05c8 RK |
1141 | static int c_tags(struct conn *c, |
1142 | char attribute((unused)) **vec, | |
1143 | int attribute((unused)) nvec) { | |
1144 | return list_response(c, "Tag list follows", trackdb_alltags()); | |
1145 | } | |
1146 | ||
460b9539 | 1147 | static int c_set_global(struct conn *c, |
1148 | char **vec, | |
1149 | int attribute((unused)) nvec) { | |
f9635e06 RK |
1150 | if(vec[0][0] == '_') { |
1151 | sink_writes(ev_writer_sink(c->w), "550 cannot set internal global preferences\n"); | |
1152 | return 1; | |
1153 | } | |
9439cdab RK |
1154 | /* We special-case the 'magic' preferences here. */ |
1155 | if(!strcmp(vec[0], "playing")) { | |
1156 | (flag_enabled(vec[1]) ? enable_playing : disable_playing)(c->who, c->ev); | |
43386708 | 1157 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
9439cdab RK |
1158 | } else if(!strcmp(vec[0], "random-play")) { |
1159 | (flag_enabled(vec[1]) ? enable_random : disable_random)(c->who, c->ev); | |
43386708 | 1160 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
9439cdab | 1161 | } else { |
2fbc0bd2 | 1162 | if(!trackdb_set_global(vec[0], vec[1], c->who)) |
9439cdab RK |
1163 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
1164 | else | |
1165 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
1166 | } | |
460b9539 | 1167 | return 1; |
1168 | } | |
1169 | ||
1170 | static int c_get_global(struct conn *c, | |
1171 | char **vec, | |
1172 | int attribute((unused)) nvec) { | |
1173 | const char *s = trackdb_get_global(vec[0]); | |
1174 | ||
1175 | if(s) | |
7b32e917 | 1176 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(s)); |
460b9539 | 1177 | else |
fb1bc1f5 | 1178 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 1179 | return 1; |
1180 | } | |
1181 | ||
7858930d | 1182 | static int c_nop(struct conn *c, |
1183 | char attribute((unused)) **vec, | |
1184 | int attribute((unused)) nvec) { | |
1185 | sink_printf(ev_writer_sink(c->w), "250 Quack\n"); | |
1186 | return 1; | |
1187 | } | |
1188 | ||
2a10b70b RK |
1189 | static int c_new(struct conn *c, |
1190 | char **vec, | |
1191 | int nvec) { | |
375d9478 | 1192 | int max; |
d742bb47 | 1193 | char **tracks; |
2a10b70b | 1194 | |
d742bb47 RK |
1195 | if(nvec > 0) |
1196 | max = atoi(vec[0]); | |
1197 | else | |
1198 | max = INT_MAX; | |
1199 | if(max <= 0 || max > config->new_max) | |
1200 | max = config->new_max; | |
1201 | tracks = trackdb_new(0, max); | |
2a10b70b RK |
1202 | sink_printf(ev_writer_sink(c->w), "253 New track list follows\n"); |
1203 | while(*tracks) { | |
1204 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
1205 | **tracks == '.' ? "." : "", *tracks); | |
1206 | ++tracks; | |
1207 | } | |
1208 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1209 | return 1; /* completed */ | |
1210 | ||
1211 | } | |
1212 | ||
ca831831 RK |
1213 | static int c_rtp_address(struct conn *c, |
1214 | char attribute((unused)) **vec, | |
1215 | int attribute((unused)) nvec) { | |
b50cfb8a | 1216 | if(api == &uaudio_rtp) { |
76e72f65 RK |
1217 | char **addr; |
1218 | ||
1219 | netaddress_format(&config->broadcast, NULL, &addr); | |
ca831831 | 1220 | sink_printf(ev_writer_sink(c->w), "252 %s %s\n", |
76e72f65 RK |
1221 | quoteutf8(addr[1]), |
1222 | quoteutf8(addr[2])); | |
ca831831 RK |
1223 | } else |
1224 | sink_writes(ev_writer_sink(c->w), "550 No RTP\n"); | |
1225 | return 1; | |
1226 | } | |
b12be54a RK |
1227 | |
1228 | static int c_cookie(struct conn *c, | |
1229 | char **vec, | |
1230 | int attribute((unused)) nvec) { | |
1231 | const char *host; | |
1232 | char *user; | |
eb5dc014 | 1233 | rights_type rights; |
b12be54a RK |
1234 | |
1235 | /* Can't log in twice on the same connection */ | |
1236 | if(c->who) { | |
1237 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
1238 | return 1; | |
1239 | } | |
1240 | /* Get some kind of peer identifcation */ | |
1241 | if(!(host = connection_host(c))) { | |
1242 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1243 | return 1; | |
1244 | } | |
1245 | /* Check the cookie */ | |
eb5dc014 | 1246 | user = verify_cookie(vec[0], &rights); |
b12be54a RK |
1247 | if(!user) { |
1248 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1249 | return 1; | |
1250 | } | |
1251 | /* Log in */ | |
e48c28bb | 1252 | c->who = user; |
b12be54a | 1253 | c->cookie = vec[0]; |
eb5dc014 | 1254 | c->rights = rights; |
30365519 | 1255 | if(strcmp(host, "local")) |
2e9ba080 | 1256 | disorder_info("S%x %s connected with cookie from %s", c->tag, user, host); |
30365519 | 1257 | else |
eb5dc014 | 1258 | c->rights |= RIGHT__LOCAL; |
0227f67d RK |
1259 | /* Response contains username so client knows who they are acting as */ |
1260 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
b12be54a RK |
1261 | return 1; |
1262 | } | |
1263 | ||
1264 | static int c_make_cookie(struct conn *c, | |
1265 | char attribute((unused)) **vec, | |
1266 | int attribute((unused)) nvec) { | |
1267 | const char *cookie = make_cookie(c->who); | |
1268 | ||
1269 | if(cookie) | |
eb5dc014 | 1270 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cookie)); |
b12be54a RK |
1271 | else |
1272 | sink_writes(ev_writer_sink(c->w), "550 Cannot create cookie\n"); | |
1273 | return 1; | |
1274 | } | |
1275 | ||
1276 | static int c_revoke(struct conn *c, | |
1277 | char attribute((unused)) **vec, | |
1278 | int attribute((unused)) nvec) { | |
1279 | if(c->cookie) { | |
1280 | revoke_cookie(c->cookie); | |
1281 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1282 | } else | |
b60ceb3c | 1283 | sink_writes(ev_writer_sink(c->w), "510 Did not log in with cookie\n"); |
b12be54a RK |
1284 | return 1; |
1285 | } | |
1286 | ||
f0feb22e RK |
1287 | static int c_adduser(struct conn *c, |
1288 | char **vec, | |
0f55e905 RK |
1289 | int nvec) { |
1290 | const char *rights; | |
1291 | ||
810b8083 | 1292 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1293 | disorder_error(0, "S%x: remote adduser", c->tag); |
b60ceb3c | 1294 | sink_writes(ev_writer_sink(c->w), "510 Remote user management is disabled\n"); |
810b8083 RK |
1295 | return 1; |
1296 | } | |
0f55e905 RK |
1297 | if(nvec > 2) { |
1298 | rights = vec[2]; | |
1299 | if(parse_rights(vec[2], 0, 1)) { | |
1300 | sink_writes(ev_writer_sink(c->w), "550 Invalid rights list\n"); | |
1301 | return -1; | |
1302 | } | |
1303 | } else | |
1304 | rights = config->default_rights; | |
1305 | if(trackdb_adduser(vec[0], vec[1], rights, | |
ba39faf6 | 1306 | 0/*email*/, 0/*confirmation*/)) |
f0feb22e RK |
1307 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1308 | else | |
1309 | sink_writes(ev_writer_sink(c->w), "250 User created\n"); | |
1310 | return 1; | |
1311 | } | |
1312 | ||
1313 | static int c_deluser(struct conn *c, | |
1314 | char **vec, | |
1315 | int attribute((unused)) nvec) { | |
0126692c | 1316 | struct conn *d; |
1317 | ||
810b8083 | 1318 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1319 | disorder_error(0, "S%x: remote deluser", c->tag); |
b60ceb3c | 1320 | sink_writes(ev_writer_sink(c->w), "510 Remote user management is disabled\n"); |
810b8083 RK |
1321 | return 1; |
1322 | } | |
0126692c | 1323 | if(trackdb_deluser(vec[0])) { |
ba39faf6 | 1324 | sink_writes(ev_writer_sink(c->w), "550 Cannot delete user\n"); |
0126692c | 1325 | return 1; |
1326 | } | |
1327 | /* Zap connections belonging to deleted user */ | |
1328 | for(d = connections; d; d = d->next) | |
1329 | if(!strcmp(d->who, vec[0])) | |
1330 | d->rights = 0; | |
1331 | sink_writes(ev_writer_sink(c->w), "250 User deleted\n"); | |
f0feb22e RK |
1332 | return 1; |
1333 | } | |
1334 | ||
1335 | static int c_edituser(struct conn *c, | |
5df73aeb | 1336 | char **vec, |
f0feb22e | 1337 | int attribute((unused)) nvec) { |
0126692c | 1338 | struct conn *d; |
1339 | ||
810b8083 | 1340 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1341 | disorder_error(0, "S%x: remote edituser", c->tag); |
b60ceb3c | 1342 | sink_writes(ev_writer_sink(c->w), "510 Remote user management is disabled\n"); |
810b8083 RK |
1343 | return 1; |
1344 | } | |
eb5dc014 RK |
1345 | /* RIGHT_ADMIN can do anything; otherwise you can only set your own email |
1346 | * address and password. */ | |
1347 | if((c->rights & RIGHT_ADMIN) | |
5df73aeb RK |
1348 | || (!strcmp(c->who, vec[0]) |
1349 | && (!strcmp(vec[1], "email") | |
1350 | || !strcmp(vec[1], "password")))) { | |
0126692c | 1351 | if(trackdb_edituserinfo(vec[0], vec[1], vec[2])) { |
5df73aeb | 1352 | sink_writes(ev_writer_sink(c->w), "550 Failed to change setting\n"); |
0126692c | 1353 | return 1; |
1354 | } | |
1355 | if(!strcmp(vec[1], "password")) { | |
1356 | /* Zap all connections for this user after a password change */ | |
1357 | for(d = connections; d; d = d->next) | |
1358 | if(!strcmp(d->who, vec[0])) | |
1359 | d->rights = 0; | |
1360 | } else if(!strcmp(vec[1], "rights")) { | |
1361 | /* Update rights for this user */ | |
1362 | rights_type r; | |
1363 | ||
ad492e00 RK |
1364 | if(!parse_rights(vec[2], &r, 1)) { |
1365 | const char *new_rights = rights_string(r); | |
1366 | for(d = connections; d; d = d->next) { | |
1367 | if(!strcmp(d->who, vec[0])) { | |
1368 | /* Update rights */ | |
0126692c | 1369 | d->rights = r; |
ad492e00 RK |
1370 | /* Notify any log connections */ |
1371 | if(d->lo) | |
1372 | sink_printf(ev_writer_sink(d->w), | |
75e7b7c3 | 1373 | "%"PRIxMAX" rights_changed %s\n", |
4265e5d3 | 1374 | (uintmax_t)xtime(0), |
75e7b7c3 | 1375 | quoteutf8(new_rights)); |
ad492e00 RK |
1376 | } |
1377 | } | |
1378 | } | |
0126692c | 1379 | } |
1380 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
834e7c4a | 1381 | } else { |
2e9ba080 RK |
1382 | disorder_error(0, "%s attempted edituser but lacks required rights", |
1383 | c->who); | |
b4a80f69 | 1384 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1385 | } |
f0feb22e RK |
1386 | return 1; |
1387 | } | |
1388 | ||
1389 | static int c_userinfo(struct conn *c, | |
1390 | char attribute((unused)) **vec, | |
1391 | int attribute((unused)) nvec) { | |
5df73aeb RK |
1392 | struct kvp *k; |
1393 | const char *value; | |
eb5dc014 | 1394 | |
39e7dcfb RK |
1395 | /* We allow remote querying of rights so that clients can figure out what |
1396 | * they're allowed to do */ | |
1397 | if(!config->remote_userman | |
1398 | && !(c->rights & RIGHT__LOCAL) | |
1399 | && strcmp(vec[1], "rights")) { | |
2e9ba080 | 1400 | disorder_error(0, "S%x: remote userinfo %s %s", c->tag, vec[0], vec[1]); |
b60ceb3c | 1401 | sink_writes(ev_writer_sink(c->w), "510 Remote user management is disabled\n"); |
810b8083 RK |
1402 | return 1; |
1403 | } | |
eb5dc014 | 1404 | /* RIGHT_ADMIN allows anything; otherwise you can only get your own email |
29f5fbd2 | 1405 | * address and rights list. */ |
eb5dc014 | 1406 | if((c->rights & RIGHT_ADMIN) |
5df73aeb RK |
1407 | || (!strcmp(c->who, vec[0]) |
1408 | && (!strcmp(vec[1], "email") | |
1409 | || !strcmp(vec[1], "rights")))) { | |
1410 | if((k = trackdb_getuserinfo(vec[0]))) | |
1411 | if((value = kvp_get(k, vec[1]))) | |
1412 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(value)); | |
1413 | else | |
1414 | sink_writes(ev_writer_sink(c->w), "555 Not set\n"); | |
1415 | else | |
1416 | sink_writes(ev_writer_sink(c->w), "550 No such user\n"); | |
834e7c4a | 1417 | } else { |
2e9ba080 RK |
1418 | disorder_error(0, "%s attempted userinfo but lacks required rights", |
1419 | c->who); | |
b4a80f69 | 1420 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1421 | } |
f0feb22e RK |
1422 | return 1; |
1423 | } | |
1424 | ||
c3be4f19 RK |
1425 | static int c_users(struct conn *c, |
1426 | char attribute((unused)) **vec, | |
1427 | int attribute((unused)) nvec) { | |
ddbf05c8 | 1428 | return list_response(c, "User list follows", trackdb_listusers()); |
c3be4f19 RK |
1429 | } |
1430 | ||
ba39faf6 RK |
1431 | static int c_register(struct conn *c, |
1432 | char **vec, | |
1433 | int attribute((unused)) nvec) { | |
53710d44 RK |
1434 | char *cs; |
1435 | uint32_t nonce[CONFIRM_SIZE]; | |
1436 | char nonce_str[(32 * CONFIRM_SIZE) / 5 + 1]; | |
1437 | ||
1438 | /* The confirmation string is username/base62(nonce). The confirmation | |
1439 | * process will pick the username back out to identify them but the _whole_ | |
1440 | * string is used as the confirmation string. Base 62 means we used only | |
1441 | * letters and digits, minimizing the chance of the URL being mispasted. */ | |
1442 | gcry_randomize(nonce, sizeof nonce, GCRY_STRONG_RANDOM); | |
1443 | if(basen(nonce, CONFIRM_SIZE, nonce_str, sizeof nonce_str, 62)) { | |
2e9ba080 | 1444 | disorder_error(0, "buffer too small encoding confirmation string"); |
53710d44 RK |
1445 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1446 | } | |
1447 | byte_xasprintf(&cs, "%s/%s", vec[0], nonce_str); | |
ba39faf6 RK |
1448 | if(trackdb_adduser(vec[0], vec[1], config->default_rights, vec[2], cs)) |
1449 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); | |
1450 | else | |
1451 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cs)); | |
1452 | return 1; | |
1453 | } | |
1454 | ||
1455 | static int c_confirm(struct conn *c, | |
1456 | char **vec, | |
1457 | int attribute((unused)) nvec) { | |
ba39faf6 | 1458 | char *user, *sep; |
30365519 | 1459 | rights_type rights; |
1460 | const char *host; | |
ba39faf6 | 1461 | |
30365519 | 1462 | /* Get some kind of peer identifcation */ |
1463 | if(!(host = connection_host(c))) { | |
1464 | sink_writes(ev_writer_sink(c->w), "530 Authentication failure\n"); | |
1465 | return 1; | |
1466 | } | |
53710d44 RK |
1467 | /* Picking the LAST / means we don't (here) rule out slashes in usernames. */ |
1468 | if(!(sep = strrchr(vec[0], '/'))) { | |
ba39faf6 RK |
1469 | sink_writes(ev_writer_sink(c->w), "550 Malformed confirmation string\n"); |
1470 | return 1; | |
1471 | } | |
53710d44 | 1472 | user = xstrndup(vec[0], sep - vec[0]); |
30365519 | 1473 | if(trackdb_confirm(user, vec[0], &rights)) |
b60ceb3c | 1474 | sink_writes(ev_writer_sink(c->w), "510 Incorrect confirmation string\n"); |
30365519 | 1475 | else { |
1476 | c->who = user; | |
1477 | c->cookie = 0; | |
1478 | c->rights = rights; | |
1479 | if(strcmp(host, "local")) | |
2e9ba080 | 1480 | disorder_info("S%x %s confirmed from %s", c->tag, user, host); |
30365519 | 1481 | else |
1482 | c->rights |= RIGHT__LOCAL; | |
1483 | /* Response contains username so client knows who they are acting as */ | |
1484 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
1485 | } | |
ba39faf6 RK |
1486 | return 1; |
1487 | } | |
6207d2f3 | 1488 | |
1489 | static int sent_reminder(ev_source attribute((unused)) *ev, | |
1490 | pid_t attribute((unused)) pid, | |
1491 | int status, | |
1492 | const struct rusage attribute((unused)) *rusage, | |
1493 | void *u) { | |
1494 | struct conn *const c = u; | |
1495 | ||
1496 | /* Tell the client what went down */ | |
1497 | if(!status) { | |
1498 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1499 | } else { | |
2e9ba080 | 1500 | disorder_error(0, "reminder subprocess %s", wstat(status)); |
6207d2f3 | 1501 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1502 | } | |
1503 | /* Re-enable this connection */ | |
1504 | ev_reader_enable(c->r); | |
1505 | return 0; | |
1506 | } | |
1507 | ||
1508 | static int c_reminder(struct conn *c, | |
1509 | char **vec, | |
1510 | int attribute((unused)) nvec) { | |
1511 | struct kvp *k; | |
1512 | const char *password, *email, *text, *encoding, *charset, *content_type; | |
1513 | const time_t *last; | |
1514 | time_t now; | |
1515 | pid_t pid; | |
1516 | ||
1517 | static hash *last_reminder; | |
1518 | ||
1519 | if(!config->mail_sender) { | |
2e9ba080 | 1520 | disorder_error(0, "cannot send password reminders because mail_sender not set"); |
6207d2f3 | 1521 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1522 | return 1; | |
1523 | } | |
1524 | if(!(k = trackdb_getuserinfo(vec[0]))) { | |
2e9ba080 | 1525 | disorder_error(0, "reminder for user '%s' who does not exist", vec[0]); |
6207d2f3 | 1526 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1527 | return 1; | |
1528 | } | |
1529 | if(!(email = kvp_get(k, "email")) | |
33e95f03 | 1530 | || !email_valid(email)) { |
2e9ba080 | 1531 | disorder_error(0, "user '%s' has no valid email address", vec[0]); |
6207d2f3 | 1532 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1533 | return 1; | |
1534 | } | |
1535 | if(!(password = kvp_get(k, "password")) | |
1536 | || !*password) { | |
2e9ba080 | 1537 | disorder_error(0, "user '%s' has no password", vec[0]); |
6207d2f3 | 1538 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1539 | return 1; | |
1540 | } | |
1541 | /* Rate-limit reminders. This hash is bounded in size by the number of | |
1542 | * users. If this is actually a problem for anyone then we can periodically | |
1543 | * clean it. */ | |
1544 | if(!last_reminder) | |
1545 | last_reminder = hash_new(sizeof (time_t)); | |
1546 | last = hash_find(last_reminder, vec[0]); | |
4265e5d3 | 1547 | xtime(&now); |
6207d2f3 | 1548 | if(last && now < *last + config->reminder_interval) { |
2e9ba080 | 1549 | disorder_error(0, "sent a password reminder to '%s' too recently", vec[0]); |
6207d2f3 | 1550 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1551 | return 1; | |
1552 | } | |
1553 | /* Send the reminder */ | |
1554 | /* TODO this should be templatized and to some extent merged with | |
1555 | * the code in act_register() */ | |
1556 | byte_xasprintf((char **)&text, | |
1557 | "Someone requested that you be sent a reminder of your DisOrder password.\n" | |
1558 | "Your password is:\n" | |
1559 | "\n" | |
1560 | " %s\n", password); | |
1561 | if(!(text = mime_encode_text(text, &charset, &encoding))) | |
2e9ba080 | 1562 | disorder_fatal(0, "cannot encode email"); |
6207d2f3 | 1563 | byte_xasprintf((char **)&content_type, "text/plain;charset=%s", |
1564 | quote822(charset, 0)); | |
1565 | pid = sendmail_subprocess("", config->mail_sender, email, | |
1566 | "DisOrder password reminder", | |
1567 | encoding, content_type, text); | |
1568 | if(pid < 0) { | |
1569 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1570 | return 1; | |
1571 | } | |
1572 | hash_add(last_reminder, vec[0], &now, HASH_INSERT_OR_REPLACE); | |
2e9ba080 | 1573 | disorder_info("sending a passsword reminder to user '%s'", vec[0]); |
6207d2f3 | 1574 | /* We can only continue when the subprocess finishes */ |
1575 | ev_child(c->ev, pid, 0, sent_reminder, c); | |
1576 | return 0; | |
1577 | } | |
1578 | ||
2b33c4cf RK |
1579 | static int c_schedule_list(struct conn *c, |
1580 | char attribute((unused)) **vec, | |
1581 | int attribute((unused)) nvec) { | |
1582 | char **ids = schedule_list(0); | |
1583 | sink_writes(ev_writer_sink(c->w), "253 ID list follows\n"); | |
1584 | while(*ids) | |
1585 | sink_printf(ev_writer_sink(c->w), "%s\n", *ids++); | |
1586 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1587 | return 1; /* completed */ | |
1588 | } | |
1589 | ||
1590 | static int c_schedule_get(struct conn *c, | |
1591 | char **vec, | |
1592 | int attribute((unused)) nvec) { | |
1593 | struct kvp *actiondata = schedule_get(vec[0]), *k; | |
1594 | ||
1595 | if(!actiondata) { | |
1596 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1597 | return 1; /* completed */ | |
1598 | } | |
1599 | /* Scheduled events are public information. Anyone with RIGHT_READ can see | |
1600 | * them. */ | |
1601 | sink_writes(ev_writer_sink(c->w), "253 Event information follows\n"); | |
1602 | for(k = actiondata; k; k = k->next) | |
1603 | sink_printf(ev_writer_sink(c->w), " %s %s\n", | |
1604 | quoteutf8(k->name), quoteutf8(k->value)); | |
1605 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1606 | return 1; /* completed */ | |
1607 | } | |
1608 | ||
1609 | static int c_schedule_del(struct conn *c, | |
1610 | char **vec, | |
1611 | int attribute((unused)) nvec) { | |
1612 | struct kvp *actiondata = schedule_get(vec[0]); | |
1613 | ||
1614 | if(!actiondata) { | |
1615 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1616 | return 1; /* completed */ | |
1617 | } | |
1618 | /* If you have admin rights you can delete anything. If you don't then you | |
1619 | * can only delete your own scheduled events. */ | |
1620 | if(!(c->rights & RIGHT_ADMIN)) { | |
1621 | const char *who = kvp_get(actiondata, "who"); | |
1622 | ||
1623 | if(!who || !c->who || strcmp(who, c->who)) { | |
b60ceb3c | 1624 | sink_writes(ev_writer_sink(c->w), "510 Not authorized\n"); |
2b33c4cf RK |
1625 | return 1; /* completed */ |
1626 | } | |
1627 | } | |
1628 | if(schedule_del(vec[0])) | |
1629 | sink_writes(ev_writer_sink(c->w), "550 Could not delete scheduled event\n"); | |
1630 | else | |
1631 | sink_writes(ev_writer_sink(c->w), "250 Deleted\n"); | |
1632 | return 1; /* completed */ | |
1633 | } | |
1634 | ||
1635 | static int c_schedule_add(struct conn *c, | |
1636 | char **vec, | |
1637 | int nvec) { | |
1638 | struct kvp *actiondata = 0; | |
067eeb5f | 1639 | const char *id; |
2b33c4cf RK |
1640 | |
1641 | /* Standard fields */ | |
1642 | kvp_set(&actiondata, "who", c->who); | |
1643 | kvp_set(&actiondata, "when", vec[0]); | |
1644 | kvp_set(&actiondata, "priority", vec[1]); | |
1645 | kvp_set(&actiondata, "action", vec[2]); | |
1646 | /* Action-dependent fields */ | |
1647 | if(!strcmp(vec[2], "play")) { | |
1648 | if(nvec != 4) { | |
1649 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1650 | return 1; | |
1651 | } | |
1652 | if(!trackdb_exists(vec[3])) { | |
1653 | sink_writes(ev_writer_sink(c->w), "550 Track is not in database\n"); | |
1654 | return 1; | |
1655 | } | |
1656 | kvp_set(&actiondata, "track", vec[3]); | |
1657 | } else if(!strcmp(vec[2], "set-global")) { | |
1658 | if(nvec < 4 || nvec > 5) { | |
1659 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1660 | return 1; | |
1661 | } | |
1662 | kvp_set(&actiondata, "key", vec[3]); | |
1663 | if(nvec > 4) | |
1664 | kvp_set(&actiondata, "value", vec[4]); | |
1665 | } else { | |
1666 | sink_writes(ev_writer_sink(c->w), "550 Unknown action\n"); | |
1667 | return 1; | |
1668 | } | |
1669 | /* schedule_add() checks user rights */ | |
1670 | id = schedule_add(c->ev, actiondata); | |
1671 | if(!id) | |
1672 | sink_writes(ev_writer_sink(c->w), "550 Cannot add scheduled event\n"); | |
1673 | else | |
1674 | sink_printf(ev_writer_sink(c->w), "252 %s\n", id); | |
1675 | return 1; | |
1676 | } | |
1677 | ||
d42e98ca RK |
1678 | static int c_adopt(struct conn *c, |
1679 | char **vec, | |
1680 | int attribute((unused)) nvec) { | |
1681 | struct queue_entry *q; | |
1682 | ||
1683 | if(!c->who) { | |
1684 | sink_writes(ev_writer_sink(c->w), "550 no identity\n"); | |
1685 | return 1; | |
1686 | } | |
1687 | if(!(q = queue_find(vec[0]))) { | |
1688 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1689 | return 1; | |
1690 | } | |
1691 | if(q->origin != origin_random) { | |
1692 | sink_writes(ev_writer_sink(c->w), "550 not a random track\n"); | |
1693 | return 1; | |
1694 | } | |
1695 | q->origin = origin_adopted; | |
1696 | q->submitter = xstrdup(c->who); | |
1697 | eventlog("adopted", q->id, q->submitter, (char *)0); | |
1698 | queue_write(); | |
1699 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1700 | return 1; | |
1701 | } | |
1702 | ||
ddbf05c8 RK |
1703 | static int playlist_response(struct conn *c, |
1704 | int err) { | |
1705 | switch(err) { | |
1706 | case 0: | |
1707 | assert(!"cannot cope with success"); | |
1708 | case EACCES: | |
b60ceb3c | 1709 | sink_writes(ev_writer_sink(c->w), "510 Access denied\n"); |
ddbf05c8 RK |
1710 | break; |
1711 | case EINVAL: | |
1712 | sink_writes(ev_writer_sink(c->w), "550 Invalid playlist name\n"); | |
1713 | break; | |
1714 | case ENOENT: | |
1715 | sink_writes(ev_writer_sink(c->w), "555 No such playlist\n"); | |
1716 | break; | |
1717 | default: | |
1718 | sink_writes(ev_writer_sink(c->w), "550 Error accessing playlist\n"); | |
1719 | break; | |
1720 | } | |
1721 | return 1; | |
1722 | } | |
1723 | ||
1724 | static int c_playlist_get(struct conn *c, | |
1725 | char **vec, | |
1726 | int attribute((unused)) nvec) { | |
1727 | char **tracks; | |
1728 | int err; | |
1729 | ||
1730 | if(!(err = trackdb_playlist_get(vec[0], c->who, &tracks, 0, 0))) | |
1731 | return list_response(c, "Playlist contents follows", tracks); | |
1732 | else | |
1733 | return playlist_response(c, err); | |
1734 | } | |
1735 | ||
1736 | static int c_playlist_set(struct conn *c, | |
1737 | char **vec, | |
1738 | int attribute((unused)) nvec) { | |
f65f5aff RK |
1739 | return fetch_body(c, c_playlist_set_body, vec[0]); |
1740 | } | |
1741 | ||
1742 | static int c_playlist_set_body(struct conn *c, | |
1743 | char **body, | |
1744 | int nbody, | |
1745 | void *u) { | |
1746 | const char *playlist = u; | |
1747 | int err; | |
1748 | ||
440af55d RK |
1749 | if(!c->locked_playlist |
1750 | || strcmp(playlist, c->locked_playlist)) { | |
1751 | sink_writes(ev_writer_sink(c->w), "550 Playlist is not locked\n"); | |
1752 | return 1; | |
1753 | } | |
f65f5aff RK |
1754 | if(!(err = trackdb_playlist_set(playlist, c->who, |
1755 | body, nbody, 0))) { | |
1756 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
1757 | return 1; | |
1758 | } else | |
1759 | return playlist_response(c, err); | |
ddbf05c8 RK |
1760 | } |
1761 | ||
1762 | static int c_playlist_get_share(struct conn *c, | |
1763 | char **vec, | |
1764 | int attribute((unused)) nvec) { | |
1765 | char *share; | |
1766 | int err; | |
1767 | ||
1768 | if(!(err = trackdb_playlist_get(vec[0], c->who, 0, 0, &share))) { | |
f65f5aff | 1769 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(share)); |
ddbf05c8 RK |
1770 | return 1; |
1771 | } else | |
1772 | return playlist_response(c, err); | |
1773 | } | |
1774 | ||
1775 | static int c_playlist_set_share(struct conn *c, | |
1776 | char **vec, | |
1777 | int attribute((unused)) nvec) { | |
1778 | int err; | |
1779 | ||
1780 | if(!(err = trackdb_playlist_set(vec[0], c->who, 0, 0, vec[1]))) { | |
f65f5aff | 1781 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
ddbf05c8 RK |
1782 | return 1; |
1783 | } else | |
1784 | return playlist_response(c, err); | |
1785 | } | |
1786 | ||
1787 | static int c_playlists(struct conn *c, | |
1788 | char attribute((unused)) **vec, | |
1789 | int attribute((unused)) nvec) { | |
1790 | char **p; | |
1791 | ||
1792 | trackdb_playlist_list(c->who, &p, 0); | |
1793 | return list_response(c, "List of playlists follows", p); | |
1794 | } | |
1795 | ||
1796 | static int c_playlist_delete(struct conn *c, | |
1797 | char **vec, | |
1798 | int attribute((unused)) nvec) { | |
1799 | int err; | |
1800 | ||
1801 | if(!(err = trackdb_playlist_delete(vec[0], c->who))) { | |
f65f5aff | 1802 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
ddbf05c8 RK |
1803 | return 1; |
1804 | } else | |
1805 | return playlist_response(c, err); | |
1806 | } | |
1807 | ||
1808 | static int c_playlist_lock(struct conn *c, | |
1809 | char **vec, | |
1810 | int attribute((unused)) nvec) { | |
1811 | int err; | |
1812 | struct conn *cc; | |
1813 | ||
1814 | /* Check we're allowed to modify this playlist */ | |
1815 | if((err = trackdb_playlist_set(vec[0], c->who, 0, 0, 0))) | |
1816 | return playlist_response(c, err); | |
1817 | /* If we hold a lock don't allow a new one */ | |
1818 | if(c->locked_playlist) { | |
1819 | sink_writes(ev_writer_sink(c->w), "550 Already holding a lock\n"); | |
1820 | return 1; | |
1821 | } | |
1822 | /* See if some other connection locks the same playlist */ | |
1823 | for(cc = connections; cc; cc = cc->next) | |
1824 | if(cc->locked_playlist && !strcmp(cc->locked_playlist, vec[0])) | |
1825 | break; | |
1826 | if(cc) { | |
1827 | /* TODO: implement config->playlist_lock_timeout */ | |
1828 | sink_writes(ev_writer_sink(c->w), "550 Already locked\n"); | |
1829 | return 1; | |
1830 | } | |
1831 | c->locked_playlist = xstrdup(vec[0]); | |
1832 | time(&c->locked_when); | |
1833 | sink_writes(ev_writer_sink(c->w), "250 Acquired lock\n"); | |
1834 | return 1; | |
1835 | } | |
1836 | ||
1837 | static int c_playlist_unlock(struct conn *c, | |
f65f5aff | 1838 | char attribute((unused)) **vec, |
ddbf05c8 RK |
1839 | int attribute((unused)) nvec) { |
1840 | if(!c->locked_playlist) { | |
1841 | sink_writes(ev_writer_sink(c->w), "550 Not holding a lock\n"); | |
1842 | return 1; | |
1843 | } | |
1844 | c->locked_playlist = 0; | |
1845 | sink_writes(ev_writer_sink(c->w), "250 Released lock\n"); | |
1846 | return 1; | |
1847 | } | |
1848 | ||
598b07b7 RK |
1849 | /** @brief Server's definition of a command */ |
1850 | static const struct server_command { | |
eb5dc014 | 1851 | /** @brief Command name */ |
460b9539 | 1852 | const char *name; |
eb5dc014 RK |
1853 | |
1854 | /** @brief Minimum number of arguments */ | |
1855 | int minargs; | |
1856 | ||
1857 | /** @brief Maximum number of arguments */ | |
1858 | int maxargs; | |
1859 | ||
1860 | /** @brief Function to process command */ | |
460b9539 | 1861 | int (*fn)(struct conn *, char **, int); |
eb5dc014 RK |
1862 | |
1863 | /** @brief Rights required to execute command | |
1864 | * | |
1865 | * 0 means that the command can be issued without logging in. If multiple | |
1866 | * bits are listed here any of those rights will do. | |
1867 | */ | |
1868 | rights_type rights; | |
460b9539 | 1869 | } commands[] = { |
a6e44aa2 | 1870 | { "adduser", 2, 3, c_adduser, RIGHT_ADMIN }, |
d42e98ca | 1871 | { "adopt", 1, 1, c_adopt, RIGHT_PLAY }, |
eb5dc014 | 1872 | { "allfiles", 0, 2, c_allfiles, RIGHT_READ }, |
ba39faf6 | 1873 | { "confirm", 1, 1, c_confirm, 0 }, |
b12be54a | 1874 | { "cookie", 1, 1, c_cookie, 0 }, |
a6e44aa2 | 1875 | { "deluser", 1, 1, c_deluser, RIGHT_ADMIN }, |
eb5dc014 RK |
1876 | { "dirs", 0, 2, c_dirs, RIGHT_READ }, |
1877 | { "disable", 0, 1, c_disable, RIGHT_GLOBAL_PREFS }, | |
1878 | { "edituser", 3, 3, c_edituser, RIGHT_ADMIN|RIGHT_USERINFO }, | |
1879 | { "enable", 0, 0, c_enable, RIGHT_GLOBAL_PREFS }, | |
1880 | { "enabled", 0, 0, c_enabled, RIGHT_READ }, | |
1881 | { "exists", 1, 1, c_exists, RIGHT_READ }, | |
1882 | { "files", 0, 2, c_files, RIGHT_READ }, | |
1883 | { "get", 2, 2, c_get, RIGHT_READ }, | |
1884 | { "get-global", 1, 1, c_get_global, RIGHT_READ }, | |
1885 | { "length", 1, 1, c_length, RIGHT_READ }, | |
1886 | { "log", 0, 0, c_log, RIGHT_READ }, | |
1887 | { "make-cookie", 0, 0, c_make_cookie, RIGHT_READ }, | |
1888 | { "move", 2, 2, c_move, RIGHT_MOVE__MASK }, | |
1889 | { "moveafter", 1, INT_MAX, c_moveafter, RIGHT_MOVE__MASK }, | |
1890 | { "new", 0, 1, c_new, RIGHT_READ }, | |
1891 | { "nop", 0, 0, c_nop, 0 }, | |
1892 | { "part", 3, 3, c_part, RIGHT_READ }, | |
1893 | { "pause", 0, 0, c_pause, RIGHT_PAUSE }, | |
1894 | { "play", 1, 1, c_play, RIGHT_PLAY }, | |
7a853280 | 1895 | { "playafter", 2, INT_MAX, c_playafter, RIGHT_PLAY }, |
eb5dc014 | 1896 | { "playing", 0, 0, c_playing, RIGHT_READ }, |
ddbf05c8 | 1897 | { "playlist-delete", 1, 1, c_playlist_delete, RIGHT_PLAY }, |
fc80bbcd RK |
1898 | { "playlist-get", 1, 1, c_playlist_get, RIGHT_READ }, |
1899 | { "playlist-get-share", 1, 1, c_playlist_get_share, RIGHT_READ }, | |
ddbf05c8 RK |
1900 | { "playlist-lock", 1, 1, c_playlist_lock, RIGHT_PLAY }, |
1901 | { "playlist-set", 1, 1, c_playlist_set, RIGHT_PLAY }, | |
1902 | { "playlist-set-share", 2, 2, c_playlist_set_share, RIGHT_PLAY }, | |
1903 | { "playlist-unlock", 0, 0, c_playlist_unlock, RIGHT_PLAY }, | |
fc80bbcd | 1904 | { "playlists", 0, 0, c_playlists, RIGHT_READ }, |
eb5dc014 RK |
1905 | { "prefs", 1, 1, c_prefs, RIGHT_READ }, |
1906 | { "queue", 0, 0, c_queue, RIGHT_READ }, | |
1907 | { "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS }, | |
1908 | { "random-enable", 0, 0, c_random_enable, RIGHT_GLOBAL_PREFS }, | |
1909 | { "random-enabled", 0, 0, c_random_enabled, RIGHT_READ }, | |
1910 | { "recent", 0, 0, c_recent, RIGHT_READ }, | |
1911 | { "reconfigure", 0, 0, c_reconfigure, RIGHT_ADMIN }, | |
a6e44aa2 | 1912 | { "register", 3, 3, c_register, RIGHT_REGISTER }, |
6207d2f3 | 1913 | { "reminder", 1, 1, c_reminder, RIGHT__LOCAL }, |
eb5dc014 | 1914 | { "remove", 1, 1, c_remove, RIGHT_REMOVE__MASK }, |
dd9af5cb | 1915 | { "rescan", 0, INT_MAX, c_rescan, RIGHT_RESCAN }, |
eb5dc014 RK |
1916 | { "resolve", 1, 1, c_resolve, RIGHT_READ }, |
1917 | { "resume", 0, 0, c_resume, RIGHT_PAUSE }, | |
1918 | { "revoke", 0, 0, c_revoke, RIGHT_READ }, | |
1919 | { "rtp-address", 0, 0, c_rtp_address, 0 }, | |
2b33c4cf RK |
1920 | { "schedule-add", 3, INT_MAX, c_schedule_add, RIGHT_READ }, |
1921 | { "schedule-del", 1, 1, c_schedule_del, RIGHT_READ }, | |
1922 | { "schedule-get", 1, 1, c_schedule_get, RIGHT_READ }, | |
1923 | { "schedule-list", 0, 0, c_schedule_list, RIGHT_READ }, | |
eb5dc014 RK |
1924 | { "scratch", 0, 1, c_scratch, RIGHT_SCRATCH__MASK }, |
1925 | { "search", 1, 1, c_search, RIGHT_READ }, | |
1926 | { "set", 3, 3, c_set, RIGHT_PREFS, }, | |
1927 | { "set-global", 2, 2, c_set_global, RIGHT_GLOBAL_PREFS }, | |
1928 | { "shutdown", 0, 0, c_shutdown, RIGHT_ADMIN }, | |
1929 | { "stats", 0, 0, c_stats, RIGHT_READ }, | |
1930 | { "tags", 0, 0, c_tags, RIGHT_READ }, | |
1931 | { "unset", 2, 2, c_set, RIGHT_PREFS }, | |
1932 | { "unset-global", 1, 1, c_set_global, RIGHT_GLOBAL_PREFS }, | |
460b9539 | 1933 | { "user", 2, 2, c_user, 0 }, |
eb5dc014 RK |
1934 | { "userinfo", 2, 2, c_userinfo, RIGHT_READ }, |
1935 | { "users", 0, 0, c_users, RIGHT_READ }, | |
1936 | { "version", 0, 0, c_version, RIGHT_READ }, | |
1937 | { "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME } | |
460b9539 | 1938 | }; |
1939 | ||
f65f5aff RK |
1940 | /** @brief Fetch a command body |
1941 | * @param c Connection | |
1942 | * @param body_callback Called with body | |
1943 | * @param u Passed to body_callback | |
1944 | * @return 1 | |
1945 | */ | |
1946 | static int fetch_body(struct conn *c, | |
1947 | body_callback_type body_callback, | |
1948 | void *u) { | |
1949 | assert(c->line_reader == command); | |
1950 | c->line_reader = body_line; | |
1951 | c->body_callback = body_callback; | |
1952 | c->body_u = u; | |
1953 | vector_init(c->body); | |
1954 | return 1; | |
1955 | } | |
1956 | ||
1957 | /** @brief @ref line_reader_type callback for command body lines | |
1958 | * @param c Connection | |
1959 | * @param line Line | |
1960 | * @return 1 if complete, 0 if incomplete | |
1961 | * | |
1962 | * Called from reader_callback(). | |
1963 | */ | |
1964 | static int body_line(struct conn *c, | |
1965 | char *line) { | |
1966 | if(*line == '.') { | |
1967 | ++line; | |
1968 | if(!*line) { | |
1969 | /* That's the lot */ | |
1970 | c->line_reader = command; | |
1971 | vector_terminate(c->body); | |
1972 | return c->body_callback(c, c->body->vec, c->body->nvec, c->body_u); | |
1973 | } | |
1974 | } | |
1975 | vector_append(c->body, xstrdup(line)); | |
1976 | return 1; /* completed */ | |
1977 | } | |
1978 | ||
460b9539 | 1979 | static void command_error(const char *msg, void *u) { |
1980 | struct conn *c = u; | |
1981 | ||
1982 | sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg); | |
1983 | } | |
1984 | ||
f65f5aff RK |
1985 | /** @brief @ref line_reader_type callback for commands |
1986 | * @param c Connection | |
1987 | * @param line Line | |
1988 | * @return 1 if complete, 0 if incomplete | |
1989 | * | |
1990 | * Called from reader_callback(). | |
1991 | */ | |
460b9539 | 1992 | static int command(struct conn *c, char *line) { |
1993 | char **vec; | |
1994 | int nvec, n; | |
1995 | ||
1996 | D(("server command %s", line)); | |
f9635e06 RK |
1997 | /* We force everything into NFC as early as possible */ |
1998 | if(!(line = utf8_compose_canon(line, strlen(line), 0))) { | |
1999 | sink_writes(ev_writer_sink(c->w), "500 cannot normalize command\n"); | |
2000 | return 1; | |
2001 | } | |
460b9539 | 2002 | if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) { |
2003 | sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n"); | |
2004 | return 1; | |
2005 | } | |
2006 | if(nvec == 0) { | |
2007 | sink_writes(ev_writer_sink(c->w), "500 do what?\n"); | |
2008 | return 1; | |
2009 | } | |
ba937f01 | 2010 | if((n = TABLE_FIND(commands, name, vec[0])) < 0) |
460b9539 | 2011 | sink_writes(ev_writer_sink(c->w), "500 unknown command\n"); |
2012 | else { | |
eb5dc014 RK |
2013 | if(commands[n].rights |
2014 | && !(c->rights & commands[n].rights)) { | |
2e9ba080 RK |
2015 | disorder_error(0, "%s attempted %s but lacks required rights", |
2016 | c->who ? c->who : "NULL", | |
834e7c4a | 2017 | commands[n].name); |
b4a80f69 | 2018 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
460b9539 | 2019 | return 1; |
2020 | } | |
2021 | ++vec; | |
2022 | --nvec; | |
2023 | if(nvec < commands[n].minargs) { | |
2024 | sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n"); | |
2025 | return 1; | |
2026 | } | |
2027 | if(nvec > commands[n].maxargs) { | |
2028 | sink_writes(ev_writer_sink(c->w), "500 too many arguments\n"); | |
2029 | return 1; | |
2030 | } | |
2031 | return commands[n].fn(c, vec, nvec); | |
2032 | } | |
2033 | return 1; /* completed */ | |
2034 | } | |
2035 | ||
2036 | /* redirect to the right reader callback for our current state */ | |
2037 | static int redirect_reader_callback(ev_source *ev, | |
2038 | ev_reader *reader, | |
460b9539 | 2039 | void *ptr, |
2040 | size_t bytes, | |
2041 | int eof, | |
2042 | void *u) { | |
2043 | struct conn *c = u; | |
2044 | ||
75d64210 | 2045 | return c->reader(ev, reader, ptr, bytes, eof, u); |
460b9539 | 2046 | } |
2047 | ||
2048 | /* the main command reader */ | |
2049 | static int reader_callback(ev_source attribute((unused)) *ev, | |
2050 | ev_reader *reader, | |
460b9539 | 2051 | void *ptr, |
2052 | size_t bytes, | |
2053 | int eof, | |
2054 | void *u) { | |
2055 | struct conn *c = u; | |
2056 | char *eol; | |
2057 | int complete; | |
2058 | ||
2059 | D(("server reader_callback")); | |
2060 | while((eol = memchr(ptr, '\n', bytes))) { | |
2061 | *eol++ = 0; | |
2062 | ev_reader_consume(reader, eol - (char *)ptr); | |
f65f5aff | 2063 | complete = c->line_reader(c, ptr); /* usually command() */ |
460b9539 | 2064 | bytes -= (eol - (char *)ptr); |
2065 | ptr = eol; | |
2066 | if(!complete) { | |
2067 | /* the command had better have set a new reader callback */ | |
2068 | if(bytes || eof) | |
2069 | /* there are further bytes to read, or we are at eof; arrange for the | |
2070 | * command's reader callback to handle them */ | |
2071 | return ev_reader_incomplete(reader); | |
2072 | /* nothing's going on right now */ | |
2073 | return 0; | |
2074 | } | |
2075 | /* command completed, we can go around and handle the next one */ | |
2076 | } | |
2077 | if(eof) { | |
2078 | if(bytes) | |
2e9ba080 | 2079 | disorder_error(0, "S%x unterminated line", c->tag); |
8d8b8c1f | 2080 | D(("normal reader close")); |
397ef7bb RK |
2081 | c->r = 0; |
2082 | if(c->w) { | |
8d8b8c1f | 2083 | D(("close associated writer")); |
397ef7bb RK |
2084 | ev_writer_close(c->w); |
2085 | c->w = 0; | |
2086 | } | |
0126692c | 2087 | remove_connection(c); |
460b9539 | 2088 | } |
2089 | return 0; | |
2090 | } | |
2091 | ||
2092 | static int listen_callback(ev_source *ev, | |
2093 | int fd, | |
2094 | const struct sockaddr attribute((unused)) *remote, | |
2095 | socklen_t attribute((unused)) rlen, | |
2096 | void *u) { | |
2097 | const struct listener *l = u; | |
2098 | struct conn *c = xmalloc(sizeof *c); | |
2099 | static unsigned tags; | |
2100 | ||
2101 | D(("server listen_callback fd %d (%s)", fd, l->name)); | |
2102 | nonblock(fd); | |
2103 | cloexec(fd); | |
ad492e00 | 2104 | c->next = connections; |
460b9539 | 2105 | c->tag = tags++; |
2106 | c->ev = ev; | |
e8c92ba7 RK |
2107 | c->w = ev_writer_new(ev, fd, writer_error, c, |
2108 | "client writer"); | |
31e2a93e | 2109 | if(!c->w) { |
2e9ba080 | 2110 | disorder_error(0, "ev_writer_new for file inbound connection (fd=%d) failed", |
31e2a93e RK |
2111 | fd); |
2112 | close(fd); | |
2113 | return 0; | |
2114 | } | |
e8c92ba7 RK |
2115 | c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c, |
2116 | "client reader"); | |
31e2a93e RK |
2117 | if(!c->r) |
2118 | /* Main reason for failure is the FD is too big and that will already have | |
2119 | * been handled */ | |
2e9ba080 RK |
2120 | disorder_fatal(0, |
2121 | "ev_reader_new for file inbound connection (fd=%d) failed", | |
2122 | fd); | |
75d64210 | 2123 | ev_tie(c->r, c->w); |
460b9539 | 2124 | c->fd = fd; |
2125 | c->reader = reader_callback; | |
2126 | c->l = l; | |
eb5dc014 | 2127 | c->rights = 0; |
f65f5aff | 2128 | c->line_reader = command; |
ad492e00 | 2129 | connections = c; |
460b9539 | 2130 | gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM); |
7b32e917 RK |
2131 | sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n", |
2132 | 2, | |
b3141726 RK |
2133 | config->authorization_algorithm, |
2134 | hex(c->nonce, sizeof c->nonce)); | |
460b9539 | 2135 | return 0; |
2136 | } | |
2137 | ||
2138 | int server_start(ev_source *ev, int pf, | |
2139 | size_t socklen, const struct sockaddr *sa, | |
de37b640 RK |
2140 | const char *name, |
2141 | int privileged) { | |
460b9539 | 2142 | int fd; |
2143 | struct listener *l = xmalloc(sizeof *l); | |
2144 | static const int one = 1; | |
2145 | ||
de37b640 RK |
2146 | D(("server_init socket %s privileged=%d", name, privileged)); |
2147 | /* Sanity check */ | |
2148 | if(privileged && pf != AF_UNIX) | |
2149 | disorder_fatal(0, "cannot create a privileged listener on a non-local port"); | |
460b9539 | 2150 | fd = xsocket(pf, SOCK_STREAM, 0); |
2151 | xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); | |
2152 | if(bind(fd, sa, socklen) < 0) { | |
2e9ba080 | 2153 | disorder_error(errno, "error binding to %s", name); |
460b9539 | 2154 | return -1; |
2155 | } | |
2156 | xlisten(fd, 128); | |
2157 | nonblock(fd); | |
2158 | cloexec(fd); | |
2159 | l->name = name; | |
2160 | l->pf = pf; | |
de37b640 | 2161 | l->privileged = privileged; |
e8c92ba7 RK |
2162 | if(ev_listen(ev, fd, listen_callback, l, "server listener")) |
2163 | exit(EXIT_FAILURE); | |
2e9ba080 | 2164 | disorder_info("listening on %s", name); |
460b9539 | 2165 | return fd; |
2166 | } | |
2167 | ||
2168 | int server_stop(ev_source *ev, int fd) { | |
2169 | xclose(fd); | |
2170 | return ev_listen_cancel(ev, fd); | |
2171 | } | |
2172 | ||
2173 | /* | |
2174 | Local Variables: | |
2175 | c-basic-offset:2 | |
2176 | comment-column:40 | |
2177 | fill-column:79 | |
2178 | End: | |
2179 | */ |