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; | |
45 | }; | |
46 | ||
f65f5aff RK |
47 | struct conn; |
48 | ||
49 | /** @brief Signature for line reader callback | |
50 | * @param c Connection | |
51 | * @param line Line | |
52 | * @return 0 if incomplete, 1 if complete | |
53 | * | |
54 | * @p line is 0-terminated and excludes the newline. It points into the | |
55 | * input buffer so will become invalid shortly. | |
56 | */ | |
57 | typedef int line_reader_type(struct conn *c, | |
58 | char *line); | |
59 | ||
60 | /** @brief Signature for with-body command callbacks | |
61 | * @param c Connection | |
62 | * @param body List of body lines | |
63 | * @param nbody Number of body lines | |
64 | * @param u As passed to fetch_body() | |
65 | * @return 0 to suspend input, 1 if complete | |
66 | * | |
67 | * The body strings are allocated (so survive indefinitely) and don't include | |
68 | * newlines. | |
69 | */ | |
70 | typedef int body_callback_type(struct conn *c, | |
71 | char **body, | |
72 | int nbody, | |
73 | void *u); | |
74 | ||
397ef7bb | 75 | /** @brief One client connection */ |
460b9539 | 76 | struct conn { |
397ef7bb | 77 | /** @brief Read commands from here */ |
460b9539 | 78 | ev_reader *r; |
397ef7bb | 79 | /** @brief Send responses to here */ |
460b9539 | 80 | ev_writer *w; |
397ef7bb | 81 | /** @brief Underlying file descriptor */ |
460b9539 | 82 | int fd; |
397ef7bb | 83 | /** @brief Unique identifier for connection used in log messages */ |
460b9539 | 84 | unsigned tag; |
397ef7bb | 85 | /** @brief Login name or NULL */ |
460b9539 | 86 | char *who; |
397ef7bb | 87 | /** @brief Event loop */ |
460b9539 | 88 | ev_source *ev; |
397ef7bb | 89 | /** @brief Nonce chosen for this connection */ |
460b9539 | 90 | unsigned char nonce[NONCE_SIZE]; |
397ef7bb RK |
91 | /** @brief Current reader callback |
92 | * | |
93 | * We change this depending on whether we're servicing the @b log command | |
94 | */ | |
460b9539 | 95 | ev_reader_callback *reader; |
397ef7bb | 96 | /** @brief Event log output sending to this connection */ |
460b9539 | 97 | struct eventlog_output *lo; |
397ef7bb | 98 | /** @brief Parent listener */ |
460b9539 | 99 | const struct listener *l; |
b12be54a RK |
100 | /** @brief Login cookie or NULL */ |
101 | char *cookie; | |
eb5dc014 RK |
102 | /** @brief Connection rights */ |
103 | rights_type rights; | |
0126692c | 104 | /** @brief Next connection */ |
105 | struct conn *next; | |
dd9af5cb RK |
106 | /** @brief True if pending rescan had 'wait' set */ |
107 | int rescan_wait; | |
ddbf05c8 RK |
108 | /** @brief Playlist that this connection locks */ |
109 | const char *locked_playlist; | |
110 | /** @brief When that playlist was locked */ | |
111 | time_t locked_when; | |
f65f5aff RK |
112 | /** @brief Line reader function */ |
113 | line_reader_type *line_reader; | |
114 | /** @brief Called when command body has been read */ | |
115 | body_callback_type *body_callback; | |
116 | /** @brief Passed to @c body_callback */ | |
117 | void *body_u; | |
118 | /** @brief Accumulating body */ | |
119 | struct vector body[1]; | |
460b9539 | 120 | }; |
121 | ||
0126692c | 122 | /** @brief Linked list of connections */ |
123 | static struct conn *connections; | |
124 | ||
460b9539 | 125 | static int reader_callback(ev_source *ev, |
126 | ev_reader *reader, | |
460b9539 | 127 | void *ptr, |
128 | size_t bytes, | |
129 | int eof, | |
130 | void *u); | |
f65f5aff RK |
131 | static int c_playlist_set_body(struct conn *c, |
132 | char **body, | |
133 | int nbody, | |
134 | void *u); | |
135 | static int fetch_body(struct conn *c, | |
136 | body_callback_type body_callback, | |
137 | void *u); | |
138 | static int body_line(struct conn *c, char *line); | |
139 | static int command(struct conn *c, char *line); | |
460b9539 | 140 | |
141 | static const char *noyes[] = { "no", "yes" }; | |
142 | ||
0126692c | 143 | /** @brief Remove a connection from the connection list */ |
144 | static void remove_connection(struct conn *c) { | |
145 | struct conn **cc; | |
146 | ||
147 | for(cc = &connections; *cc && *cc != c; cc = &(*cc)->next) | |
148 | ; | |
149 | if(*cc) | |
150 | *cc = c->next; | |
151 | } | |
152 | ||
397ef7bb RK |
153 | /** @brief Called when a connection's writer fails or is shut down |
154 | * | |
155 | * If the connection still has a raeder that is cancelled. | |
156 | */ | |
460b9539 | 157 | static int writer_error(ev_source attribute((unused)) *ev, |
460b9539 | 158 | int errno_value, |
159 | void *u) { | |
160 | struct conn *c = u; | |
161 | ||
8d8b8c1f | 162 | D(("server writer_error S%x %d", c->tag, errno_value)); |
460b9539 | 163 | if(errno_value == 0) { |
164 | /* writer is done */ | |
8d8b8c1f | 165 | D(("S%x writer completed", c->tag)); |
460b9539 | 166 | } else { |
167 | if(errno_value != EPIPE) | |
2e9ba080 | 168 | disorder_error(errno_value, "S%x write error on socket", c->tag); |
38b8221f | 169 | if(c->r) { |
8d8b8c1f | 170 | D(("cancel reader")); |
38b8221f RK |
171 | ev_reader_cancel(c->r); |
172 | c->r = 0; | |
173 | } | |
8d8b8c1f | 174 | D(("done cancel reader")); |
460b9539 | 175 | } |
38b8221f | 176 | c->w = 0; |
75d64210 | 177 | ev_report(ev); |
0126692c | 178 | remove_connection(c); |
460b9539 | 179 | return 0; |
180 | } | |
181 | ||
397ef7bb RK |
182 | /** @brief Called when a conncetion's reader fails or is shut down |
183 | * | |
184 | * If connection still has a writer then it is closed. | |
185 | */ | |
460b9539 | 186 | static int reader_error(ev_source attribute((unused)) *ev, |
460b9539 | 187 | int errno_value, |
188 | void *u) { | |
189 | struct conn *c = u; | |
190 | ||
8d8b8c1f | 191 | D(("server reader_error S%x %d", c->tag, errno_value)); |
2e9ba080 | 192 | disorder_error(errno_value, "S%x read error on socket", c->tag); |
38b8221f RK |
193 | if(c->w) |
194 | ev_writer_close(c->w); | |
195 | c->w = 0; | |
196 | c->r = 0; | |
768d7355 | 197 | ev_report(ev); |
0126692c | 198 | remove_connection(c); |
460b9539 | 199 | return 0; |
200 | } | |
201 | ||
460b9539 | 202 | static int c_disable(struct conn *c, char **vec, int nvec) { |
203 | if(nvec == 0) | |
204 | disable_playing(c->who); | |
205 | else if(nvec == 1 && !strcmp(vec[0], "now")) | |
206 | disable_playing(c->who); | |
207 | else { | |
208 | sink_writes(ev_writer_sink(c->w), "550 invalid argument\n"); | |
209 | return 1; /* completed */ | |
210 | } | |
211 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
212 | return 1; /* completed */ | |
213 | } | |
214 | ||
215 | static int c_enable(struct conn *c, | |
216 | char attribute((unused)) **vec, | |
217 | int attribute((unused)) nvec) { | |
218 | enable_playing(c->who, c->ev); | |
219 | /* Enable implicitly unpauses if there is nothing playing */ | |
220 | if(paused && !playing) resume_playing(c->who); | |
221 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
222 | return 1; /* completed */ | |
223 | } | |
224 | ||
225 | static int c_enabled(struct conn *c, | |
226 | char attribute((unused)) **vec, | |
227 | int attribute((unused)) nvec) { | |
228 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[playing_is_enabled()]); | |
229 | return 1; /* completed */ | |
230 | } | |
231 | ||
232 | static int c_play(struct conn *c, char **vec, | |
233 | int attribute((unused)) nvec) { | |
234 | const char *track; | |
235 | struct queue_entry *q; | |
236 | ||
237 | if(!trackdb_exists(vec[0])) { | |
238 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
239 | return 1; | |
240 | } | |
241 | if(!(track = trackdb_resolve(vec[0]))) { | |
242 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
243 | return 1; | |
244 | } | |
7a853280 | 245 | q = queue_add(track, c->who, WHERE_BEFORE_RANDOM, NULL, origin_picked); |
460b9539 | 246 | queue_write(); |
81e440ce | 247 | sink_printf(ev_writer_sink(c->w), "252 %s\n", q->id); |
7a853280 RK |
248 | /* We make sure the track at the head of the queue is prepared, just in case |
249 | * we added it. We could be more subtle but prepare() will ensure we don't | |
250 | * prepare the same track twice so there's no point. */ | |
251 | if(qhead.next != &qhead) | |
252 | prepare(c->ev, qhead.next); | |
460b9539 | 253 | /* If the queue was empty but we are for some reason paused then |
254 | * unpause. */ | |
255 | if(!playing) resume_playing(0); | |
256 | play(c->ev); | |
257 | return 1; /* completed */ | |
258 | } | |
259 | ||
7a853280 RK |
260 | static int c_playafter(struct conn *c, char **vec, |
261 | int attribute((unused)) nvec) { | |
262 | const char *track; | |
263 | struct queue_entry *q; | |
264 | const char *afterme = vec[0]; | |
265 | ||
266 | for(int n = 1; n < nvec; ++n) { | |
267 | if(!trackdb_exists(vec[n])) { | |
268 | sink_writes(ev_writer_sink(c->w), "550 track is not in database\n"); | |
269 | return 1; | |
270 | } | |
271 | if(!(track = trackdb_resolve(vec[n]))) { | |
272 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
273 | return 1; | |
274 | } | |
275 | q = queue_add(track, c->who, WHERE_AFTER, afterme, origin_picked); | |
276 | if(!q) { | |
277 | sink_printf(ev_writer_sink(c->w), "550 No such ID\n"); | |
278 | return 1; | |
279 | } | |
2e9ba080 | 280 | disorder_info("added %s as %s after %s", track, q->id, afterme); |
7a853280 RK |
281 | afterme = q->id; |
282 | } | |
283 | queue_write(); | |
284 | sink_printf(ev_writer_sink(c->w), "252 OK\n"); | |
285 | /* We make sure the track at the head of the queue is prepared, just in case | |
286 | * we added it. We could be more subtle but prepare() will ensure we don't | |
287 | * prepare the same track twice so there's no point. */ | |
288 | if(qhead.next != &qhead) { | |
289 | prepare(c->ev, qhead.next); | |
2e9ba080 | 290 | disorder_info("prepared %s", qhead.next->id); |
7a853280 RK |
291 | } |
292 | /* If the queue was empty but we are for some reason paused then | |
293 | * unpause. */ | |
294 | if(!playing) | |
295 | resume_playing(0); | |
296 | play(c->ev); | |
297 | return 1; /* completed */ | |
298 | } | |
299 | ||
460b9539 | 300 | static int c_remove(struct conn *c, char **vec, |
301 | int attribute((unused)) nvec) { | |
302 | struct queue_entry *q; | |
303 | ||
304 | if(!(q = queue_find(vec[0]))) { | |
305 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
306 | return 1; | |
307 | } | |
938d8157 | 308 | if(!right_removable(c->rights, c->who, q)) { |
2e9ba080 | 309 | disorder_error(0, "%s attempted remove but lacks required rights", c->who); |
eb5dc014 | 310 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 311 | "510 Not authorized to remove that track\n"); |
eb5dc014 | 312 | return 1; |
460b9539 | 313 | } |
314 | queue_remove(q, c->who); | |
315 | /* De-prepare the track. */ | |
316 | abandon(c->ev, q); | |
49a773eb RK |
317 | /* See about adding a new random track */ |
318 | add_random_track(c->ev); | |
460b9539 | 319 | /* Prepare whatever the next head track is. */ |
320 | if(qhead.next != &qhead) | |
321 | prepare(c->ev, qhead.next); | |
322 | queue_write(); | |
323 | sink_writes(ev_writer_sink(c->w), "250 removed\n"); | |
324 | return 1; /* completed */ | |
325 | } | |
326 | ||
327 | static int c_scratch(struct conn *c, | |
328 | char **vec, | |
329 | int nvec) { | |
330 | if(!playing) { | |
331 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
332 | return 1; /* completed */ | |
333 | } | |
eb5dc014 RK |
334 | /* TODO there is a bug here: if we specify an ID but it's not the currently |
335 | * playing track then you will get 550 if you weren't authorized to scratch | |
336 | * the currently playing track. */ | |
938d8157 | 337 | if(!right_scratchable(c->rights, c->who, playing)) { |
2e9ba080 | 338 | disorder_error(0, "%s attempted scratch but lacks required rights", c->who); |
eb5dc014 | 339 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 340 | "510 Not authorized to scratch that track\n"); |
eb5dc014 | 341 | return 1; |
460b9539 | 342 | } |
343 | scratch(c->who, nvec == 1 ? vec[0] : 0); | |
344 | /* If you scratch an unpaused track then it is automatically unpaused */ | |
345 | resume_playing(0); | |
346 | sink_writes(ev_writer_sink(c->w), "250 scratched\n"); | |
347 | return 1; /* completed */ | |
348 | } | |
349 | ||
350 | static int c_pause(struct conn *c, | |
351 | char attribute((unused)) **vec, | |
352 | int attribute((unused)) nvec) { | |
353 | if(!playing) { | |
354 | sink_writes(ev_writer_sink(c->w), "250 nothing is playing\n"); | |
355 | return 1; /* completed */ | |
356 | } | |
357 | if(paused) { | |
358 | sink_writes(ev_writer_sink(c->w), "250 already paused\n"); | |
359 | return 1; /* completed */ | |
360 | } | |
361 | if(pause_playing(c->who) < 0) | |
362 | sink_writes(ev_writer_sink(c->w), "550 cannot pause this track\n"); | |
363 | else | |
364 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
365 | return 1; | |
366 | } | |
367 | ||
368 | static int c_resume(struct conn *c, | |
369 | char attribute((unused)) **vec, | |
370 | int attribute((unused)) nvec) { | |
371 | if(!paused) { | |
372 | sink_writes(ev_writer_sink(c->w), "250 not paused\n"); | |
373 | return 1; /* completed */ | |
374 | } | |
375 | resume_playing(c->who); | |
376 | sink_writes(ev_writer_sink(c->w), "250 paused\n"); | |
377 | return 1; | |
378 | } | |
379 | ||
380 | static int c_shutdown(struct conn *c, | |
381 | char attribute((unused)) **vec, | |
382 | int attribute((unused)) nvec) { | |
2e9ba080 | 383 | disorder_info("S%x shut down by %s", c->tag, c->who); |
460b9539 | 384 | sink_writes(ev_writer_sink(c->w), "250 shutting down\n"); |
385 | ev_writer_flush(c->w); | |
386 | quit(c->ev); | |
387 | } | |
388 | ||
389 | static int c_reconfigure(struct conn *c, | |
390 | char attribute((unused)) **vec, | |
391 | int attribute((unused)) nvec) { | |
2e9ba080 | 392 | disorder_info("S%x reconfigure by %s", c->tag, c->who); |
460b9539 | 393 | if(reconfigure(c->ev, 1)) |
394 | sink_writes(ev_writer_sink(c->w), "550 error reading new config\n"); | |
395 | else | |
396 | sink_writes(ev_writer_sink(c->w), "250 installed new config\n"); | |
397 | return 1; /* completed */ | |
398 | } | |
399 | ||
dd9af5cb RK |
400 | static void finished_rescan(void *ru) { |
401 | struct conn *const c = ru; | |
402 | ||
403 | sink_writes(ev_writer_sink(c->w), "250 rescan completed\n"); | |
404 | /* Turn this connection back on */ | |
405 | ev_reader_enable(c->r); | |
406 | } | |
407 | ||
408 | static void start_fresh_rescan(void *ru) { | |
409 | struct conn *const c = ru; | |
410 | ||
411 | if(trackdb_rescan_underway()) { | |
412 | /* Some other waiter beat us to it. However in this case we're happy to | |
413 | * piggyback; the requirement is that a new rescan be started, not that it | |
414 | * was _our_ rescan. */ | |
415 | if(c->rescan_wait) { | |
416 | /* We block until the rescan completes */ | |
417 | trackdb_add_rescanned(finished_rescan, c); | |
418 | } else { | |
419 | /* We report that the new rescan has started */ | |
420 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
421 | /* Turn this connection back on */ | |
422 | ev_reader_enable(c->r); | |
423 | } | |
424 | } else { | |
425 | /* We are the first connection to get a callback so we must start a | |
426 | * rescan. */ | |
427 | if(c->rescan_wait) { | |
428 | /* We want to block until the new rescan completes */ | |
429 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
430 | } else { | |
431 | /* We can report back immediately */ | |
432 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
433 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
434 | /* Turn this connection back on */ | |
435 | ev_reader_enable(c->r); | |
436 | } | |
437 | } | |
438 | } | |
439 | ||
460b9539 | 440 | static int c_rescan(struct conn *c, |
dd9af5cb RK |
441 | char **vec, |
442 | int nvec) { | |
d867af10 | 443 | int flag_wait = 0, flag_fresh = 0, n; |
dd9af5cb RK |
444 | |
445 | /* Parse flags */ | |
446 | for(n = 0; n < nvec; ++n) { | |
447 | if(!strcmp(vec[n], "wait")) | |
d867af10 | 448 | flag_wait = 1; /* wait for rescan to complete */ |
dd9af5cb RK |
449 | #if 0 |
450 | /* Currently disabled because untested (and hard to test). */ | |
451 | else if(!strcmp(vec[n], "fresh")) | |
d867af10 | 452 | flag_fresh = 1; /* don't piggyback underway rescan */ |
dd9af5cb RK |
453 | #endif |
454 | else { | |
455 | sink_writes(ev_writer_sink(c->w), "550 unknown flag\n"); | |
456 | return 1; /* completed */ | |
457 | } | |
458 | } | |
459 | /* Report what was requested */ | |
2e9ba080 RK |
460 | disorder_info("S%x rescan by %s (%s %s)", c->tag, c->who, |
461 | flag_wait ? "wait" : "", | |
462 | flag_fresh ? "fresh" : ""); | |
dd9af5cb | 463 | if(trackdb_rescan_underway()) { |
d867af10 | 464 | if(flag_fresh) { |
dd9af5cb RK |
465 | /* We want a fresh rescan but there is already one underway. Arrange a |
466 | * callback when it completes and then set off a new one. */ | |
d867af10 | 467 | c->rescan_wait = flag_wait; |
dd9af5cb | 468 | trackdb_add_rescanned(start_fresh_rescan, c); |
d867af10 | 469 | if(flag_wait) |
dd9af5cb RK |
470 | return 0; |
471 | else { | |
472 | sink_writes(ev_writer_sink(c->w), "250 rescan queued\n"); | |
473 | return 1; | |
474 | } | |
475 | } else { | |
476 | /* There's a rescan underway, and it's acceptable to piggyback on it */ | |
d867af10 | 477 | if(flag_wait) { |
dd9af5cb RK |
478 | /* We want to block until completion. */ |
479 | trackdb_add_rescanned(finished_rescan, c); | |
480 | return 0; | |
481 | } else { | |
482 | /* We don't want to block. So we just report that things are in | |
483 | * hand. */ | |
484 | sink_writes(ev_writer_sink(c->w), "250 rescan already underway\n"); | |
485 | return 1; | |
486 | } | |
487 | } | |
488 | } else { | |
489 | /* No rescan is underway. fresh is therefore irrelevant. */ | |
d867af10 | 490 | if(flag_wait) { |
dd9af5cb RK |
491 | /* We want to block until completion */ |
492 | trackdb_rescan(c->ev, 1/*check*/, finished_rescan, c); | |
493 | return 0; | |
494 | } else { | |
495 | /* We don't want to block. */ | |
496 | trackdb_rescan(c->ev, 1/*check*/, 0, 0); | |
497 | sink_writes(ev_writer_sink(c->w), "250 rescan initiated\n"); | |
498 | return 1; /* completed */ | |
499 | } | |
500 | } | |
460b9539 | 501 | } |
502 | ||
503 | static int c_version(struct conn *c, | |
504 | char attribute((unused)) **vec, | |
505 | int attribute((unused)) nvec) { | |
506 | /* VERSION had better only use the basic character set */ | |
a05e4467 | 507 | sink_printf(ev_writer_sink(c->w), "251 %s\n", disorder_short_version_string); |
460b9539 | 508 | return 1; /* completed */ |
509 | } | |
510 | ||
511 | static int c_playing(struct conn *c, | |
512 | char attribute((unused)) **vec, | |
513 | int attribute((unused)) nvec) { | |
514 | if(playing) { | |
515 | queue_fix_sofar(playing); | |
516 | playing->expected = 0; | |
517 | sink_printf(ev_writer_sink(c->w), "252 %s\n", queue_marshall(playing)); | |
518 | } else | |
519 | sink_printf(ev_writer_sink(c->w), "259 nothing playing\n"); | |
520 | return 1; /* completed */ | |
521 | } | |
522 | ||
b12be54a | 523 | static const char *connection_host(struct conn *c) { |
460b9539 | 524 | union { |
525 | struct sockaddr sa; | |
526 | struct sockaddr_in in; | |
527 | struct sockaddr_in6 in6; | |
528 | } u; | |
529 | socklen_t l; | |
b12be54a | 530 | int n; |
460b9539 | 531 | char host[1024]; |
532 | ||
460b9539 | 533 | /* get connection data */ |
534 | l = sizeof u; | |
535 | if(getpeername(c->fd, &u.sa, &l) < 0) { | |
2e9ba080 | 536 | disorder_error(errno, "S%x error calling getpeername", c->tag); |
b12be54a | 537 | return 0; |
460b9539 | 538 | } |
539 | if(c->l->pf != PF_UNIX) { | |
540 | if((n = getnameinfo(&u.sa, l, | |
541 | host, sizeof host, 0, 0, NI_NUMERICHOST))) { | |
2e9ba080 RK |
542 | disorder_error(0, "S%x error calling getnameinfo: %s", |
543 | c->tag, gai_strerror(n)); | |
b12be54a | 544 | return 0; |
460b9539 | 545 | } |
b12be54a | 546 | return xstrdup(host); |
18e6d6e6 | 547 | } else |
b12be54a RK |
548 | return "local"; |
549 | } | |
550 | ||
551 | static int c_user(struct conn *c, | |
552 | char **vec, | |
553 | int attribute((unused)) nvec) { | |
eb5dc014 | 554 | struct kvp *k; |
f0feb22e | 555 | const char *res, *host, *password; |
eb5dc014 | 556 | rights_type rights; |
b12be54a RK |
557 | |
558 | if(c->who) { | |
559 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
560 | return 1; | |
561 | } | |
562 | /* get connection data */ | |
563 | if(!(host = connection_host(c))) { | |
564 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
565 | return 1; | |
566 | } | |
460b9539 | 567 | /* find the user */ |
eb5dc014 | 568 | k = trackdb_getuserinfo(vec[0]); |
f0feb22e | 569 | /* reject nonexistent users */ |
eb5dc014 | 570 | if(!k) { |
2e9ba080 | 571 | disorder_error(0, "S%x unknown user '%s' from %s", c->tag, vec[0], host); |
eb5dc014 RK |
572 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
573 | return 1; | |
574 | } | |
575 | /* reject unconfirmed users */ | |
576 | if(kvp_get(k, "confirmation")) { | |
2e9ba080 RK |
577 | disorder_error(0, "S%x unconfirmed user '%s' from %s", |
578 | c->tag, vec[0], host); | |
eb5dc014 RK |
579 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
580 | return 1; | |
581 | } | |
582 | password = kvp_get(k, "password"); | |
583 | if(!password) password = ""; | |
0f55e905 | 584 | if(parse_rights(kvp_get(k, "rights"), &rights, 1)) { |
2e9ba080 | 585 | disorder_error(0, "error parsing rights for %s", vec[0]); |
18e6d6e6 | 586 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
587 | return 1; | |
588 | } | |
f0feb22e RK |
589 | /* check whether the response is right */ |
590 | res = authhash(c->nonce, sizeof c->nonce, password, | |
637fdea3 | 591 | config->authorization_algorithm); |
18e6d6e6 | 592 | if(wideopen || (res && !strcmp(res, vec[1]))) { |
593 | c->who = vec[0]; | |
eb5dc014 | 594 | c->rights = rights; |
18e6d6e6 | 595 | /* currently we only bother logging remote connections */ |
30365519 | 596 | if(strcmp(host, "local")) |
2e9ba080 | 597 | disorder_info("S%x %s connected from %s", c->tag, vec[0], host); |
30365519 | 598 | else |
eb5dc014 | 599 | c->rights |= RIGHT__LOCAL; |
18e6d6e6 | 600 | sink_writes(ev_writer_sink(c->w), "230 OK\n"); |
601 | return 1; | |
460b9539 | 602 | } |
603 | /* oops, response was wrong */ | |
2e9ba080 RK |
604 | disorder_info("S%x authentication failure for %s from %s", |
605 | c->tag, vec[0], host); | |
460b9539 | 606 | sink_writes(ev_writer_sink(c->w), "530 authentication failed\n"); |
607 | return 1; | |
608 | } | |
609 | ||
610 | static int c_recent(struct conn *c, | |
611 | char attribute((unused)) **vec, | |
612 | int attribute((unused)) nvec) { | |
613 | const struct queue_entry *q; | |
614 | ||
615 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
616 | for(q = phead.next; q != &phead; q = q->next) | |
617 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
618 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
619 | return 1; /* completed */ | |
620 | } | |
621 | ||
622 | static int c_queue(struct conn *c, | |
623 | char attribute((unused)) **vec, | |
624 | int attribute((unused)) nvec) { | |
625 | struct queue_entry *q; | |
626 | time_t when = 0; | |
627 | const char *l; | |
628 | long length; | |
629 | ||
630 | sink_writes(ev_writer_sink(c->w), "253 Tracks follow\n"); | |
631 | if(playing_is_enabled() && !paused) { | |
632 | if(playing) { | |
633 | queue_fix_sofar(playing); | |
634 | if((l = trackdb_get(playing->track, "_length")) | |
635 | && (length = atol(l))) { | |
4265e5d3 | 636 | xtime(&when); |
460b9539 | 637 | when += length - playing->sofar + config->gap; |
638 | } | |
639 | } else | |
640 | /* Nothing is playing but playing is enabled, so whatever is | |
641 | * first in the queue can be expected to start immediately. */ | |
4265e5d3 | 642 | xtime(&when); |
460b9539 | 643 | } |
644 | for(q = qhead.next; q != &qhead; q = q->next) { | |
645 | /* fill in estimated start time */ | |
646 | q->expected = when; | |
647 | sink_printf(ev_writer_sink(c->w), " %s\n", queue_marshall(q)); | |
648 | /* update for next track */ | |
649 | if(when) { | |
650 | if((l = trackdb_get(q->track, "_length")) | |
651 | && (length = atol(l))) | |
652 | when += length + config->gap; | |
653 | else | |
654 | when = 0; | |
655 | } | |
656 | } | |
657 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
658 | return 1; /* completed */ | |
659 | } | |
660 | ||
661 | static int output_list(struct conn *c, char **vec) { | |
662 | while(*vec) | |
663 | sink_printf(ev_writer_sink(c->w), "%s\n", *vec++); | |
664 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
665 | return 1; | |
666 | } | |
667 | ||
668 | static int files_dirs(struct conn *c, | |
669 | char **vec, | |
670 | int nvec, | |
671 | enum trackdb_listable what) { | |
672 | const char *dir, *re, *errstr; | |
673 | int erroffset; | |
674 | pcre *rec; | |
675 | char **fvec, *key; | |
676 | ||
677 | switch(nvec) { | |
678 | case 0: dir = 0; re = 0; break; | |
679 | case 1: dir = vec[0]; re = 0; break; | |
680 | case 2: dir = vec[0]; re = vec[1]; break; | |
681 | default: abort(); | |
682 | } | |
683 | /* A bit of a bodge to make sure the args don't trample on cache keys */ | |
684 | if(dir && strchr(dir, '\n')) { | |
685 | sink_writes(ev_writer_sink(c->w), "550 invalid directory name\n"); | |
686 | return 1; | |
687 | } | |
688 | if(re && strchr(re, '\n')) { | |
689 | sink_writes(ev_writer_sink(c->w), "550 invalid regexp\n"); | |
690 | return 1; | |
691 | } | |
692 | /* We bother eliminating "" because the web interface is relatively | |
693 | * likely to send it */ | |
694 | if(re && *re) { | |
695 | byte_xasprintf(&key, "%d\n%s\n%s", (int)what, dir ? dir : "", re); | |
696 | fvec = (char **)cache_get(&cache_files_type, key); | |
697 | if(fvec) { | |
698 | /* Got a cache hit, don't store the answer in the cache */ | |
699 | key = 0; | |
700 | ++cache_files_hits; | |
701 | rec = 0; /* quieten compiler */ | |
702 | } else { | |
703 | /* Cache miss, we'll do the lookup and key != 0 so we'll store the answer | |
704 | * in the cache. */ | |
705 | if(!(rec = pcre_compile(re, PCRE_CASELESS|PCRE_UTF8, | |
706 | &errstr, &erroffset, 0))) { | |
707 | sink_printf(ev_writer_sink(c->w), "550 Error compiling regexp: %s\n", | |
708 | errstr); | |
709 | return 1; | |
710 | } | |
711 | /* It only counts as a miss if the regexp was valid. */ | |
712 | ++cache_files_misses; | |
713 | } | |
714 | } else { | |
715 | /* No regexp, don't bother caching the result */ | |
716 | rec = 0; | |
717 | key = 0; | |
718 | fvec = 0; | |
719 | } | |
720 | if(!fvec) { | |
721 | /* No cache hit (either because a miss, or because we did not look) so do | |
722 | * the lookup */ | |
723 | if(dir && *dir) | |
724 | fvec = trackdb_list(dir, 0, what, rec); | |
725 | else | |
726 | fvec = trackdb_list(0, 0, what, rec); | |
727 | } | |
728 | if(key) | |
729 | /* Put the answer in the cache */ | |
730 | cache_put(&cache_files_type, key, fvec); | |
731 | sink_writes(ev_writer_sink(c->w), "253 Listing follow\n"); | |
732 | return output_list(c, fvec); | |
733 | } | |
734 | ||
735 | static int c_files(struct conn *c, | |
736 | char **vec, | |
737 | int nvec) { | |
738 | return files_dirs(c, vec, nvec, trackdb_files); | |
739 | } | |
740 | ||
741 | static int c_dirs(struct conn *c, | |
742 | char **vec, | |
743 | int nvec) { | |
744 | return files_dirs(c, vec, nvec, trackdb_directories); | |
745 | } | |
746 | ||
747 | static int c_allfiles(struct conn *c, | |
748 | char **vec, | |
749 | int nvec) { | |
750 | return files_dirs(c, vec, nvec, trackdb_directories|trackdb_files); | |
751 | } | |
752 | ||
753 | static int c_get(struct conn *c, | |
754 | char **vec, | |
755 | int attribute((unused)) nvec) { | |
27ed5a69 | 756 | const char *v, *track; |
460b9539 | 757 | |
27ed5a69 RK |
758 | if(!(track = trackdb_resolve(vec[0]))) { |
759 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
760 | return 1; | |
761 | } | |
762 | if(vec[1][0] != '_' && (v = trackdb_get(track, vec[1]))) | |
7b32e917 | 763 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 764 | else |
fb1bc1f5 | 765 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 766 | return 1; |
767 | } | |
768 | ||
769 | static int c_length(struct conn *c, | |
770 | char **vec, | |
771 | int attribute((unused)) nvec) { | |
772 | const char *track, *v; | |
773 | ||
774 | if(!(track = trackdb_resolve(vec[0]))) { | |
775 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
776 | return 1; | |
777 | } | |
778 | if((v = trackdb_get(track, "_length"))) | |
7b32e917 | 779 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(v)); |
460b9539 | 780 | else |
781 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
782 | return 1; | |
783 | } | |
784 | ||
785 | static int c_set(struct conn *c, | |
786 | char **vec, | |
787 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
788 | const char *track; |
789 | ||
790 | if(!(track = trackdb_resolve(vec[0]))) { | |
791 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
792 | return 1; | |
793 | } | |
794 | if(vec[1][0] != '_' && !trackdb_set(track, vec[1], vec[2])) | |
460b9539 | 795 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
796 | else | |
797 | sink_writes(ev_writer_sink(c->w), "550 not found\n"); | |
798 | return 1; | |
799 | } | |
800 | ||
801 | static int c_prefs(struct conn *c, | |
802 | char **vec, | |
803 | int attribute((unused)) nvec) { | |
804 | struct kvp *k; | |
27ed5a69 | 805 | const char *track; |
460b9539 | 806 | |
27ed5a69 RK |
807 | if(!(track = trackdb_resolve(vec[0]))) { |
808 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
809 | return 1; | |
810 | } | |
811 | k = trackdb_get_all(track); | |
460b9539 | 812 | sink_writes(ev_writer_sink(c->w), "253 prefs follow\n"); |
813 | for(; k; k = k->next) | |
814 | if(k->name[0] != '_') /* omit internal values */ | |
815 | sink_printf(ev_writer_sink(c->w), | |
816 | " %s %s\n", quoteutf8(k->name), quoteutf8(k->value)); | |
817 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
818 | return 1; | |
819 | } | |
820 | ||
821 | static int c_exists(struct conn *c, | |
822 | char **vec, | |
823 | int attribute((unused)) nvec) { | |
27ed5a69 | 824 | /* trackdb_exists() does its own alias checking */ |
460b9539 | 825 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[trackdb_exists(vec[0])]); |
826 | return 1; | |
827 | } | |
828 | ||
829 | static void search_parse_error(const char *msg, void *u) { | |
830 | *(const char **)u = msg; | |
831 | } | |
832 | ||
833 | static int c_search(struct conn *c, | |
834 | char **vec, | |
835 | int attribute((unused)) nvec) { | |
836 | char **terms, **results; | |
837 | int nterms, nresults, n; | |
838 | const char *e = "unknown error"; | |
839 | ||
840 | /* This is a bit of a bodge. Initially it's there to make the eclient | |
841 | * interface a bit more convenient to add searching to, but it has the more | |
842 | * compelling advantage that if everything uses it, then interpretation of | |
843 | * user-supplied search strings will be the same everywhere. */ | |
844 | if(!(terms = split(vec[0], &nterms, SPLIT_QUOTES, search_parse_error, &e))) { | |
845 | sink_printf(ev_writer_sink(c->w), "550 %s\n", e); | |
846 | } else { | |
847 | results = trackdb_search(terms, nterms, &nresults); | |
848 | sink_printf(ev_writer_sink(c->w), "253 %d matches\n", nresults); | |
849 | for(n = 0; n < nresults; ++n) | |
850 | sink_printf(ev_writer_sink(c->w), "%s\n", results[n]); | |
851 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
852 | } | |
853 | return 1; | |
854 | } | |
855 | ||
856 | static int c_random_enable(struct conn *c, | |
857 | char attribute((unused)) **vec, | |
858 | int attribute((unused)) nvec) { | |
859 | enable_random(c->who, c->ev); | |
860 | /* Enable implicitly unpauses if there is nothing playing */ | |
861 | if(paused && !playing) resume_playing(c->who); | |
862 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
863 | return 1; /* completed */ | |
864 | } | |
865 | ||
866 | static int c_random_disable(struct conn *c, | |
867 | char attribute((unused)) **vec, | |
868 | int attribute((unused)) nvec) { | |
869 | disable_random(c->who); | |
870 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
871 | return 1; /* completed */ | |
872 | } | |
873 | ||
874 | static int c_random_enabled(struct conn *c, | |
875 | char attribute((unused)) **vec, | |
876 | int attribute((unused)) nvec) { | |
877 | sink_printf(ev_writer_sink(c->w), "252 %s\n", noyes[random_is_enabled()]); | |
878 | return 1; /* completed */ | |
879 | } | |
880 | ||
d6dde5a3 RK |
881 | static void got_stats(char *stats, void *u) { |
882 | struct conn *const c = u; | |
883 | ||
884 | sink_printf(ev_writer_sink(c->w), "253 stats\n%s\n.\n", stats); | |
885 | /* Now we can start processing commands again */ | |
886 | ev_reader_enable(c->r); | |
887 | } | |
888 | ||
460b9539 | 889 | static int c_stats(struct conn *c, |
890 | char attribute((unused)) **vec, | |
891 | int attribute((unused)) nvec) { | |
d6dde5a3 RK |
892 | trackdb_stats_subprocess(c->ev, got_stats, c); |
893 | return 0; /* not yet complete */ | |
460b9539 | 894 | } |
895 | ||
896 | static int c_volume(struct conn *c, | |
897 | char **vec, | |
898 | int nvec) { | |
899 | int l, r, set; | |
900 | char lb[32], rb[32]; | |
eb5dc014 | 901 | rights_type rights; |
460b9539 | 902 | |
903 | switch(nvec) { | |
904 | case 0: | |
905 | set = 0; | |
906 | break; | |
907 | case 1: | |
908 | l = r = atoi(vec[0]); | |
909 | set = 1; | |
910 | break; | |
911 | case 2: | |
912 | l = atoi(vec[0]); | |
913 | r = atoi(vec[1]); | |
914 | set = 1; | |
915 | break; | |
916 | default: | |
917 | abort(); | |
918 | } | |
eb5dc014 RK |
919 | rights = set ? RIGHT_VOLUME : RIGHT_READ; |
920 | if(!(c->rights & rights)) { | |
2e9ba080 RK |
921 | disorder_error(0, "%s attempted to set volume but lacks required rights", |
922 | c->who); | |
b4a80f69 | 923 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
eb5dc014 RK |
924 | return 1; |
925 | } | |
b50cfb8a | 926 | if(!api || !api->set_volume) { |
460b9539 | 927 | sink_writes(ev_writer_sink(c->w), "550 error accessing mixer\n"); |
b50cfb8a RK |
928 | return 1; |
929 | } | |
e4d0463f | 930 | (set ? api->set_volume : api->get_volume)(&l, &r); |
b50cfb8a RK |
931 | sink_printf(ev_writer_sink(c->w), "252 %d %d\n", l, r); |
932 | if(l != volume_left || r != volume_right) { | |
933 | volume_left = l; | |
934 | volume_right = r; | |
935 | snprintf(lb, sizeof lb, "%d", l); | |
936 | snprintf(rb, sizeof rb, "%d", r); | |
937 | eventlog("volume", lb, rb, (char *)0); | |
460b9539 | 938 | } |
939 | return 1; | |
940 | } | |
941 | ||
397ef7bb RK |
942 | /** @brief Called when data arrives on a log connection |
943 | * | |
944 | * We just discard all such data. The client may occasionally send data as a | |
945 | * keepalive. | |
946 | */ | |
947 | static int logging_reader_callback(ev_source attribute((unused)) *ev, | |
460b9539 | 948 | ev_reader *reader, |
397ef7bb | 949 | void attribute((unused)) *ptr, |
460b9539 | 950 | size_t bytes, |
397ef7bb RK |
951 | int attribute((unused)) eof, |
952 | void attribute((unused)) *u) { | |
460b9539 | 953 | struct conn *c = u; |
954 | ||
397ef7bb RK |
955 | ev_reader_consume(reader, bytes); |
956 | if(eof) { | |
957 | /* Oops, that's all for now */ | |
8d8b8c1f | 958 | D(("logging reader eof")); |
397ef7bb | 959 | if(c->w) { |
8d8b8c1f | 960 | D(("close writer")); |
397ef7bb RK |
961 | ev_writer_close(c->w); |
962 | c->w = 0; | |
963 | } | |
964 | c->r = 0; | |
0126692c | 965 | remove_connection(c); |
f6033c46 | 966 | } |
397ef7bb | 967 | return 0; |
460b9539 | 968 | } |
969 | ||
970 | static void logclient(const char *msg, void *user) { | |
971 | struct conn *c = user; | |
972 | ||
f6033c46 RK |
973 | if(!c->w || !c->r) { |
974 | /* This connection has gone up in smoke for some reason */ | |
975 | eventlog_remove(c->lo); | |
ad492e00 | 976 | c->lo = 0; |
f6033c46 RK |
977 | return; |
978 | } | |
75e7b7c3 RK |
979 | /* user_* messages are restricted */ |
980 | if(!strncmp(msg, "user_", 5)) { | |
58d2aad2 RK |
981 | /* They are only sent to admin users */ |
982 | if(!(c->rights & RIGHT_ADMIN)) | |
983 | return; | |
984 | /* They are not sent over TCP connections unless remote user-management is | |
985 | * enabled */ | |
986 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) | |
987 | return; | |
988 | } | |
460b9539 | 989 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" %s\n", |
4265e5d3 | 990 | (uintmax_t)xtime(0), msg); |
460b9539 | 991 | } |
992 | ||
993 | static int c_log(struct conn *c, | |
994 | char attribute((unused)) **vec, | |
995 | int attribute((unused)) nvec) { | |
996 | time_t now; | |
997 | ||
998 | sink_writes(ev_writer_sink(c->w), "254 OK\n"); | |
999 | /* pump out initial state */ | |
4265e5d3 | 1000 | xtime(&now); |
460b9539 | 1001 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", |
1002 | (uintmax_t)now, | |
1003 | playing_is_enabled() ? "enable_play" : "disable_play"); | |
1004 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
1005 | (uintmax_t)now, | |
1006 | random_is_enabled() ? "enable_random" : "disable_random"); | |
1007 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state %s\n", | |
1008 | (uintmax_t)now, | |
1009 | paused ? "pause" : "resume"); | |
5abe307a RK |
1010 | if(playing) |
1011 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" state playing\n", | |
1012 | (uintmax_t)now); | |
df44d69b RK |
1013 | /* Initial volume */ |
1014 | sink_printf(ev_writer_sink(c->w), "%"PRIxMAX" volume %d %d\n", | |
1015 | (uintmax_t)now, volume_left, volume_right); | |
460b9539 | 1016 | c->lo = xmalloc(sizeof *c->lo); |
1017 | c->lo->fn = logclient; | |
1018 | c->lo->user = c; | |
1019 | eventlog_add(c->lo); | |
1020 | c->reader = logging_reader_callback; | |
1021 | return 0; | |
1022 | } | |
1023 | ||
eb5dc014 RK |
1024 | /** @brief Test whether a move is allowed |
1025 | * @param c Connection | |
1026 | * @param qs List of IDs on queue | |
1027 | * @param nqs Number of IDs | |
1028 | * @return 0 if move is prohibited, non-0 if it is allowed | |
1029 | */ | |
1030 | static int has_move_rights(struct conn *c, struct queue_entry **qs, int nqs) { | |
eb5dc014 RK |
1031 | for(; nqs > 0; ++qs, --nqs) { |
1032 | struct queue_entry *const q = *qs; | |
1033 | ||
938d8157 | 1034 | if(!right_movable(c->rights, c->who, q)) |
1035 | return 0; | |
eb5dc014 | 1036 | } |
938d8157 | 1037 | return 1; |
eb5dc014 RK |
1038 | } |
1039 | ||
460b9539 | 1040 | static int c_move(struct conn *c, |
1041 | char **vec, | |
1042 | int attribute((unused)) nvec) { | |
1043 | struct queue_entry *q; | |
1044 | int n; | |
1045 | ||
460b9539 | 1046 | if(!(q = queue_find(vec[0]))) { |
1047 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1048 | return 1; | |
1049 | } | |
eb5dc014 | 1050 | if(!has_move_rights(c, &q, 1)) { |
2e9ba080 | 1051 | disorder_error(0, "%s attempted move but lacks required rights", c->who); |
eb5dc014 | 1052 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1053 | "510 Not authorized to move that track\n"); |
eb5dc014 RK |
1054 | return 1; |
1055 | } | |
460b9539 | 1056 | n = queue_move(q, atoi(vec[1]), c->who); |
460b9539 | 1057 | sink_printf(ev_writer_sink(c->w), "252 %d\n", n); |
1058 | /* If we've moved to the head of the queue then prepare the track. */ | |
1059 | if(q == qhead.next) | |
1060 | prepare(c->ev, q); | |
1061 | return 1; | |
1062 | } | |
1063 | ||
1064 | static int c_moveafter(struct conn *c, | |
1065 | char **vec, | |
1066 | int attribute((unused)) nvec) { | |
1067 | struct queue_entry *q, **qs; | |
1068 | int n; | |
1069 | ||
460b9539 | 1070 | if(vec[0][0]) { |
1071 | if(!(q = queue_find(vec[0]))) { | |
1072 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1073 | return 1; | |
1074 | } | |
1075 | } else | |
1076 | q = 0; | |
1077 | ++vec; | |
1078 | --nvec; | |
1079 | qs = xcalloc(nvec, sizeof *qs); | |
1080 | for(n = 0; n < nvec; ++n) | |
1081 | if(!(qs[n] = queue_find(vec[n]))) { | |
1082 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1083 | return 1; | |
1084 | } | |
eb5dc014 | 1085 | if(!has_move_rights(c, qs, nvec)) { |
2e9ba080 RK |
1086 | disorder_error(0, "%s attempted moveafter but lacks required rights", |
1087 | c->who); | |
eb5dc014 | 1088 | sink_writes(ev_writer_sink(c->w), |
b4a80f69 | 1089 | "510 Not authorized to move those tracks\n"); |
eb5dc014 RK |
1090 | return 1; |
1091 | } | |
460b9539 | 1092 | queue_moveafter(q, nvec, qs, c->who); |
460b9539 | 1093 | sink_printf(ev_writer_sink(c->w), "250 Moved tracks\n"); |
1094 | /* If we've moved to the head of the queue then prepare the track. */ | |
1095 | if(q == qhead.next) | |
1096 | prepare(c->ev, q); | |
1097 | return 1; | |
1098 | } | |
1099 | ||
1100 | static int c_part(struct conn *c, | |
1101 | char **vec, | |
1102 | int attribute((unused)) nvec) { | |
27ed5a69 RK |
1103 | const char *track; |
1104 | ||
1105 | if(!(track = trackdb_resolve(vec[0]))) { | |
1106 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1107 | return 1; | |
1108 | } | |
460b9539 | 1109 | sink_printf(ev_writer_sink(c->w), "252 %s\n", |
27ed5a69 | 1110 | quoteutf8(trackdb_getpart(track, vec[1], vec[2]))); |
460b9539 | 1111 | return 1; |
1112 | } | |
1113 | ||
1114 | static int c_resolve(struct conn *c, | |
1115 | char **vec, | |
1116 | int attribute((unused)) nvec) { | |
1117 | const char *track; | |
1118 | ||
1119 | if(!(track = trackdb_resolve(vec[0]))) { | |
1120 | sink_writes(ev_writer_sink(c->w), "550 cannot resolve track\n"); | |
1121 | return 1; | |
1122 | } | |
7b32e917 | 1123 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(track)); |
460b9539 | 1124 | return 1; |
1125 | } | |
1126 | ||
ddbf05c8 RK |
1127 | static int list_response(struct conn *c, |
1128 | const char *reply, | |
1129 | char **list) { | |
1130 | sink_printf(ev_writer_sink(c->w), "253 %s\n", reply); | |
1131 | while(*list) { | |
460b9539 | 1132 | sink_printf(ev_writer_sink(c->w), "%s%s\n", |
ddbf05c8 RK |
1133 | **list == '.' ? "." : "", *list); |
1134 | ++list; | |
460b9539 | 1135 | } |
1136 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1137 | return 1; /* completed */ | |
460b9539 | 1138 | } |
1139 | ||
ddbf05c8 RK |
1140 | static int c_tags(struct conn *c, |
1141 | char attribute((unused)) **vec, | |
1142 | int attribute((unused)) nvec) { | |
1143 | return list_response(c, "Tag list follows", trackdb_alltags()); | |
1144 | } | |
1145 | ||
460b9539 | 1146 | static int c_set_global(struct conn *c, |
1147 | char **vec, | |
1148 | int attribute((unused)) nvec) { | |
f9635e06 RK |
1149 | if(vec[0][0] == '_') { |
1150 | sink_writes(ev_writer_sink(c->w), "550 cannot set internal global preferences\n"); | |
1151 | return 1; | |
1152 | } | |
460b9539 | 1153 | trackdb_set_global(vec[0], vec[1], c->who); |
1154 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
1155 | return 1; | |
1156 | } | |
1157 | ||
1158 | static int c_get_global(struct conn *c, | |
1159 | char **vec, | |
1160 | int attribute((unused)) nvec) { | |
1161 | const char *s = trackdb_get_global(vec[0]); | |
1162 | ||
1163 | if(s) | |
7b32e917 | 1164 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(s)); |
460b9539 | 1165 | else |
fb1bc1f5 | 1166 | sink_writes(ev_writer_sink(c->w), "555 not found\n"); |
460b9539 | 1167 | return 1; |
1168 | } | |
1169 | ||
7858930d | 1170 | static int c_nop(struct conn *c, |
1171 | char attribute((unused)) **vec, | |
1172 | int attribute((unused)) nvec) { | |
1173 | sink_printf(ev_writer_sink(c->w), "250 Quack\n"); | |
1174 | return 1; | |
1175 | } | |
1176 | ||
2a10b70b RK |
1177 | static int c_new(struct conn *c, |
1178 | char **vec, | |
1179 | int nvec) { | |
d742bb47 RK |
1180 | int max, n; |
1181 | char **tracks; | |
2a10b70b | 1182 | |
d742bb47 RK |
1183 | if(nvec > 0) |
1184 | max = atoi(vec[0]); | |
1185 | else | |
1186 | max = INT_MAX; | |
1187 | if(max <= 0 || max > config->new_max) | |
1188 | max = config->new_max; | |
1189 | tracks = trackdb_new(0, max); | |
2a10b70b | 1190 | sink_printf(ev_writer_sink(c->w), "253 New track list follows\n"); |
d742bb47 | 1191 | n = 0; |
2a10b70b RK |
1192 | while(*tracks) { |
1193 | sink_printf(ev_writer_sink(c->w), "%s%s\n", | |
1194 | **tracks == '.' ? "." : "", *tracks); | |
1195 | ++tracks; | |
1196 | } | |
1197 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1198 | return 1; /* completed */ | |
1199 | ||
1200 | } | |
1201 | ||
ca831831 RK |
1202 | static int c_rtp_address(struct conn *c, |
1203 | char attribute((unused)) **vec, | |
1204 | int attribute((unused)) nvec) { | |
b50cfb8a | 1205 | if(api == &uaudio_rtp) { |
76e72f65 RK |
1206 | char **addr; |
1207 | ||
1208 | netaddress_format(&config->broadcast, NULL, &addr); | |
ca831831 | 1209 | sink_printf(ev_writer_sink(c->w), "252 %s %s\n", |
76e72f65 RK |
1210 | quoteutf8(addr[1]), |
1211 | quoteutf8(addr[2])); | |
ca831831 RK |
1212 | } else |
1213 | sink_writes(ev_writer_sink(c->w), "550 No RTP\n"); | |
1214 | return 1; | |
1215 | } | |
b12be54a RK |
1216 | |
1217 | static int c_cookie(struct conn *c, | |
1218 | char **vec, | |
1219 | int attribute((unused)) nvec) { | |
1220 | const char *host; | |
1221 | char *user; | |
eb5dc014 | 1222 | rights_type rights; |
b12be54a RK |
1223 | |
1224 | /* Can't log in twice on the same connection */ | |
1225 | if(c->who) { | |
1226 | sink_writes(ev_writer_sink(c->w), "530 already authenticated\n"); | |
1227 | return 1; | |
1228 | } | |
1229 | /* Get some kind of peer identifcation */ | |
1230 | if(!(host = connection_host(c))) { | |
1231 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1232 | return 1; | |
1233 | } | |
1234 | /* Check the cookie */ | |
eb5dc014 | 1235 | user = verify_cookie(vec[0], &rights); |
b12be54a RK |
1236 | if(!user) { |
1237 | sink_writes(ev_writer_sink(c->w), "530 authentication failure\n"); | |
1238 | return 1; | |
1239 | } | |
1240 | /* Log in */ | |
e48c28bb | 1241 | c->who = user; |
b12be54a | 1242 | c->cookie = vec[0]; |
eb5dc014 | 1243 | c->rights = rights; |
30365519 | 1244 | if(strcmp(host, "local")) |
2e9ba080 | 1245 | disorder_info("S%x %s connected with cookie from %s", c->tag, user, host); |
30365519 | 1246 | else |
eb5dc014 | 1247 | c->rights |= RIGHT__LOCAL; |
0227f67d RK |
1248 | /* Response contains username so client knows who they are acting as */ |
1249 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
b12be54a RK |
1250 | return 1; |
1251 | } | |
1252 | ||
1253 | static int c_make_cookie(struct conn *c, | |
1254 | char attribute((unused)) **vec, | |
1255 | int attribute((unused)) nvec) { | |
1256 | const char *cookie = make_cookie(c->who); | |
1257 | ||
1258 | if(cookie) | |
eb5dc014 | 1259 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cookie)); |
b12be54a RK |
1260 | else |
1261 | sink_writes(ev_writer_sink(c->w), "550 Cannot create cookie\n"); | |
1262 | return 1; | |
1263 | } | |
1264 | ||
1265 | static int c_revoke(struct conn *c, | |
1266 | char attribute((unused)) **vec, | |
1267 | int attribute((unused)) nvec) { | |
1268 | if(c->cookie) { | |
1269 | revoke_cookie(c->cookie); | |
1270 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1271 | } else | |
1272 | sink_writes(ev_writer_sink(c->w), "550 Did not log in with cookie\n"); | |
1273 | return 1; | |
1274 | } | |
1275 | ||
f0feb22e RK |
1276 | static int c_adduser(struct conn *c, |
1277 | char **vec, | |
0f55e905 RK |
1278 | int nvec) { |
1279 | const char *rights; | |
1280 | ||
810b8083 | 1281 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1282 | disorder_error(0, "S%x: remote adduser", c->tag); |
810b8083 RK |
1283 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1284 | return 1; | |
1285 | } | |
0f55e905 RK |
1286 | if(nvec > 2) { |
1287 | rights = vec[2]; | |
1288 | if(parse_rights(vec[2], 0, 1)) { | |
1289 | sink_writes(ev_writer_sink(c->w), "550 Invalid rights list\n"); | |
1290 | return -1; | |
1291 | } | |
1292 | } else | |
1293 | rights = config->default_rights; | |
1294 | if(trackdb_adduser(vec[0], vec[1], rights, | |
ba39faf6 | 1295 | 0/*email*/, 0/*confirmation*/)) |
f0feb22e RK |
1296 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1297 | else | |
1298 | sink_writes(ev_writer_sink(c->w), "250 User created\n"); | |
1299 | return 1; | |
1300 | } | |
1301 | ||
1302 | static int c_deluser(struct conn *c, | |
1303 | char **vec, | |
1304 | int attribute((unused)) nvec) { | |
0126692c | 1305 | struct conn *d; |
1306 | ||
810b8083 | 1307 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1308 | disorder_error(0, "S%x: remote deluser", c->tag); |
810b8083 RK |
1309 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1310 | return 1; | |
1311 | } | |
0126692c | 1312 | if(trackdb_deluser(vec[0])) { |
ba39faf6 | 1313 | sink_writes(ev_writer_sink(c->w), "550 Cannot delete user\n"); |
0126692c | 1314 | return 1; |
1315 | } | |
1316 | /* Zap connections belonging to deleted user */ | |
1317 | for(d = connections; d; d = d->next) | |
1318 | if(!strcmp(d->who, vec[0])) | |
1319 | d->rights = 0; | |
1320 | sink_writes(ev_writer_sink(c->w), "250 User deleted\n"); | |
f0feb22e RK |
1321 | return 1; |
1322 | } | |
1323 | ||
1324 | static int c_edituser(struct conn *c, | |
5df73aeb | 1325 | char **vec, |
f0feb22e | 1326 | int attribute((unused)) nvec) { |
0126692c | 1327 | struct conn *d; |
1328 | ||
810b8083 | 1329 | if(!config->remote_userman && !(c->rights & RIGHT__LOCAL)) { |
2e9ba080 | 1330 | disorder_error(0, "S%x: remote edituser", c->tag); |
810b8083 RK |
1331 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1332 | return 1; | |
1333 | } | |
eb5dc014 RK |
1334 | /* RIGHT_ADMIN can do anything; otherwise you can only set your own email |
1335 | * address and password. */ | |
1336 | if((c->rights & RIGHT_ADMIN) | |
5df73aeb RK |
1337 | || (!strcmp(c->who, vec[0]) |
1338 | && (!strcmp(vec[1], "email") | |
1339 | || !strcmp(vec[1], "password")))) { | |
0126692c | 1340 | if(trackdb_edituserinfo(vec[0], vec[1], vec[2])) { |
5df73aeb | 1341 | sink_writes(ev_writer_sink(c->w), "550 Failed to change setting\n"); |
0126692c | 1342 | return 1; |
1343 | } | |
1344 | if(!strcmp(vec[1], "password")) { | |
1345 | /* Zap all connections for this user after a password change */ | |
1346 | for(d = connections; d; d = d->next) | |
1347 | if(!strcmp(d->who, vec[0])) | |
1348 | d->rights = 0; | |
1349 | } else if(!strcmp(vec[1], "rights")) { | |
1350 | /* Update rights for this user */ | |
1351 | rights_type r; | |
1352 | ||
ad492e00 RK |
1353 | if(!parse_rights(vec[2], &r, 1)) { |
1354 | const char *new_rights = rights_string(r); | |
1355 | for(d = connections; d; d = d->next) { | |
1356 | if(!strcmp(d->who, vec[0])) { | |
1357 | /* Update rights */ | |
0126692c | 1358 | d->rights = r; |
ad492e00 RK |
1359 | /* Notify any log connections */ |
1360 | if(d->lo) | |
1361 | sink_printf(ev_writer_sink(d->w), | |
75e7b7c3 | 1362 | "%"PRIxMAX" rights_changed %s\n", |
4265e5d3 | 1363 | (uintmax_t)xtime(0), |
75e7b7c3 | 1364 | quoteutf8(new_rights)); |
ad492e00 RK |
1365 | } |
1366 | } | |
1367 | } | |
0126692c | 1368 | } |
1369 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
834e7c4a | 1370 | } else { |
2e9ba080 RK |
1371 | disorder_error(0, "%s attempted edituser but lacks required rights", |
1372 | c->who); | |
b4a80f69 | 1373 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1374 | } |
f0feb22e RK |
1375 | return 1; |
1376 | } | |
1377 | ||
1378 | static int c_userinfo(struct conn *c, | |
1379 | char attribute((unused)) **vec, | |
1380 | int attribute((unused)) nvec) { | |
5df73aeb RK |
1381 | struct kvp *k; |
1382 | const char *value; | |
eb5dc014 | 1383 | |
39e7dcfb RK |
1384 | /* We allow remote querying of rights so that clients can figure out what |
1385 | * they're allowed to do */ | |
1386 | if(!config->remote_userman | |
1387 | && !(c->rights & RIGHT__LOCAL) | |
1388 | && strcmp(vec[1], "rights")) { | |
2e9ba080 | 1389 | disorder_error(0, "S%x: remote userinfo %s %s", c->tag, vec[0], vec[1]); |
810b8083 RK |
1390 | sink_writes(ev_writer_sink(c->w), "550 Remote user management is disabled\n"); |
1391 | return 1; | |
1392 | } | |
eb5dc014 | 1393 | /* RIGHT_ADMIN allows anything; otherwise you can only get your own email |
29f5fbd2 | 1394 | * address and rights list. */ |
eb5dc014 | 1395 | if((c->rights & RIGHT_ADMIN) |
5df73aeb RK |
1396 | || (!strcmp(c->who, vec[0]) |
1397 | && (!strcmp(vec[1], "email") | |
1398 | || !strcmp(vec[1], "rights")))) { | |
1399 | if((k = trackdb_getuserinfo(vec[0]))) | |
1400 | if((value = kvp_get(k, vec[1]))) | |
1401 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(value)); | |
1402 | else | |
1403 | sink_writes(ev_writer_sink(c->w), "555 Not set\n"); | |
1404 | else | |
1405 | sink_writes(ev_writer_sink(c->w), "550 No such user\n"); | |
834e7c4a | 1406 | } else { |
2e9ba080 RK |
1407 | disorder_error(0, "%s attempted userinfo but lacks required rights", |
1408 | c->who); | |
b4a80f69 | 1409 | sink_writes(ev_writer_sink(c->w), "510 Restricted to administrators\n"); |
834e7c4a | 1410 | } |
f0feb22e RK |
1411 | return 1; |
1412 | } | |
1413 | ||
c3be4f19 RK |
1414 | static int c_users(struct conn *c, |
1415 | char attribute((unused)) **vec, | |
1416 | int attribute((unused)) nvec) { | |
ddbf05c8 | 1417 | return list_response(c, "User list follows", trackdb_listusers()); |
c3be4f19 RK |
1418 | } |
1419 | ||
ba39faf6 RK |
1420 | static int c_register(struct conn *c, |
1421 | char **vec, | |
1422 | int attribute((unused)) nvec) { | |
53710d44 RK |
1423 | char *cs; |
1424 | uint32_t nonce[CONFIRM_SIZE]; | |
1425 | char nonce_str[(32 * CONFIRM_SIZE) / 5 + 1]; | |
1426 | ||
1427 | /* The confirmation string is username/base62(nonce). The confirmation | |
1428 | * process will pick the username back out to identify them but the _whole_ | |
1429 | * string is used as the confirmation string. Base 62 means we used only | |
1430 | * letters and digits, minimizing the chance of the URL being mispasted. */ | |
1431 | gcry_randomize(nonce, sizeof nonce, GCRY_STRONG_RANDOM); | |
1432 | if(basen(nonce, CONFIRM_SIZE, nonce_str, sizeof nonce_str, 62)) { | |
2e9ba080 | 1433 | disorder_error(0, "buffer too small encoding confirmation string"); |
53710d44 RK |
1434 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); |
1435 | } | |
1436 | byte_xasprintf(&cs, "%s/%s", vec[0], nonce_str); | |
ba39faf6 RK |
1437 | if(trackdb_adduser(vec[0], vec[1], config->default_rights, vec[2], cs)) |
1438 | sink_writes(ev_writer_sink(c->w), "550 Cannot create user\n"); | |
1439 | else | |
1440 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(cs)); | |
1441 | return 1; | |
1442 | } | |
1443 | ||
1444 | static int c_confirm(struct conn *c, | |
1445 | char **vec, | |
1446 | int attribute((unused)) nvec) { | |
ba39faf6 | 1447 | char *user, *sep; |
30365519 | 1448 | rights_type rights; |
1449 | const char *host; | |
ba39faf6 | 1450 | |
30365519 | 1451 | /* Get some kind of peer identifcation */ |
1452 | if(!(host = connection_host(c))) { | |
1453 | sink_writes(ev_writer_sink(c->w), "530 Authentication failure\n"); | |
1454 | return 1; | |
1455 | } | |
53710d44 RK |
1456 | /* Picking the LAST / means we don't (here) rule out slashes in usernames. */ |
1457 | if(!(sep = strrchr(vec[0], '/'))) { | |
ba39faf6 RK |
1458 | sink_writes(ev_writer_sink(c->w), "550 Malformed confirmation string\n"); |
1459 | return 1; | |
1460 | } | |
53710d44 | 1461 | user = xstrndup(vec[0], sep - vec[0]); |
30365519 | 1462 | if(trackdb_confirm(user, vec[0], &rights)) |
ba39faf6 | 1463 | sink_writes(ev_writer_sink(c->w), "550 Incorrect confirmation string\n"); |
30365519 | 1464 | else { |
1465 | c->who = user; | |
1466 | c->cookie = 0; | |
1467 | c->rights = rights; | |
1468 | if(strcmp(host, "local")) | |
2e9ba080 | 1469 | disorder_info("S%x %s confirmed from %s", c->tag, user, host); |
30365519 | 1470 | else |
1471 | c->rights |= RIGHT__LOCAL; | |
1472 | /* Response contains username so client knows who they are acting as */ | |
1473 | sink_printf(ev_writer_sink(c->w), "232 %s\n", quoteutf8(user)); | |
1474 | } | |
ba39faf6 RK |
1475 | return 1; |
1476 | } | |
6207d2f3 | 1477 | |
1478 | static int sent_reminder(ev_source attribute((unused)) *ev, | |
1479 | pid_t attribute((unused)) pid, | |
1480 | int status, | |
1481 | const struct rusage attribute((unused)) *rusage, | |
1482 | void *u) { | |
1483 | struct conn *const c = u; | |
1484 | ||
1485 | /* Tell the client what went down */ | |
1486 | if(!status) { | |
1487 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1488 | } else { | |
2e9ba080 | 1489 | disorder_error(0, "reminder subprocess %s", wstat(status)); |
6207d2f3 | 1490 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1491 | } | |
1492 | /* Re-enable this connection */ | |
1493 | ev_reader_enable(c->r); | |
1494 | return 0; | |
1495 | } | |
1496 | ||
1497 | static int c_reminder(struct conn *c, | |
1498 | char **vec, | |
1499 | int attribute((unused)) nvec) { | |
1500 | struct kvp *k; | |
1501 | const char *password, *email, *text, *encoding, *charset, *content_type; | |
1502 | const time_t *last; | |
1503 | time_t now; | |
1504 | pid_t pid; | |
1505 | ||
1506 | static hash *last_reminder; | |
1507 | ||
1508 | if(!config->mail_sender) { | |
2e9ba080 | 1509 | disorder_error(0, "cannot send password reminders because mail_sender not set"); |
6207d2f3 | 1510 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1511 | return 1; | |
1512 | } | |
1513 | if(!(k = trackdb_getuserinfo(vec[0]))) { | |
2e9ba080 | 1514 | disorder_error(0, "reminder for user '%s' who does not exist", vec[0]); |
6207d2f3 | 1515 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1516 | return 1; | |
1517 | } | |
1518 | if(!(email = kvp_get(k, "email")) | |
33e95f03 | 1519 | || !email_valid(email)) { |
2e9ba080 | 1520 | disorder_error(0, "user '%s' has no valid email address", vec[0]); |
6207d2f3 | 1521 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1522 | return 1; | |
1523 | } | |
1524 | if(!(password = kvp_get(k, "password")) | |
1525 | || !*password) { | |
2e9ba080 | 1526 | disorder_error(0, "user '%s' has no password", vec[0]); |
6207d2f3 | 1527 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1528 | return 1; | |
1529 | } | |
1530 | /* Rate-limit reminders. This hash is bounded in size by the number of | |
1531 | * users. If this is actually a problem for anyone then we can periodically | |
1532 | * clean it. */ | |
1533 | if(!last_reminder) | |
1534 | last_reminder = hash_new(sizeof (time_t)); | |
1535 | last = hash_find(last_reminder, vec[0]); | |
4265e5d3 | 1536 | xtime(&now); |
6207d2f3 | 1537 | if(last && now < *last + config->reminder_interval) { |
2e9ba080 | 1538 | disorder_error(0, "sent a password reminder to '%s' too recently", vec[0]); |
6207d2f3 | 1539 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); |
1540 | return 1; | |
1541 | } | |
1542 | /* Send the reminder */ | |
1543 | /* TODO this should be templatized and to some extent merged with | |
1544 | * the code in act_register() */ | |
1545 | byte_xasprintf((char **)&text, | |
1546 | "Someone requested that you be sent a reminder of your DisOrder password.\n" | |
1547 | "Your password is:\n" | |
1548 | "\n" | |
1549 | " %s\n", password); | |
1550 | if(!(text = mime_encode_text(text, &charset, &encoding))) | |
2e9ba080 | 1551 | disorder_fatal(0, "cannot encode email"); |
6207d2f3 | 1552 | byte_xasprintf((char **)&content_type, "text/plain;charset=%s", |
1553 | quote822(charset, 0)); | |
1554 | pid = sendmail_subprocess("", config->mail_sender, email, | |
1555 | "DisOrder password reminder", | |
1556 | encoding, content_type, text); | |
1557 | if(pid < 0) { | |
1558 | sink_writes(ev_writer_sink(c->w), "550 Cannot send a reminder email\n"); | |
1559 | return 1; | |
1560 | } | |
1561 | hash_add(last_reminder, vec[0], &now, HASH_INSERT_OR_REPLACE); | |
2e9ba080 | 1562 | disorder_info("sending a passsword reminder to user '%s'", vec[0]); |
6207d2f3 | 1563 | /* We can only continue when the subprocess finishes */ |
1564 | ev_child(c->ev, pid, 0, sent_reminder, c); | |
1565 | return 0; | |
1566 | } | |
1567 | ||
2b33c4cf RK |
1568 | static int c_schedule_list(struct conn *c, |
1569 | char attribute((unused)) **vec, | |
1570 | int attribute((unused)) nvec) { | |
1571 | char **ids = schedule_list(0); | |
1572 | sink_writes(ev_writer_sink(c->w), "253 ID list follows\n"); | |
1573 | while(*ids) | |
1574 | sink_printf(ev_writer_sink(c->w), "%s\n", *ids++); | |
1575 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1576 | return 1; /* completed */ | |
1577 | } | |
1578 | ||
1579 | static int c_schedule_get(struct conn *c, | |
1580 | char **vec, | |
1581 | int attribute((unused)) nvec) { | |
1582 | struct kvp *actiondata = schedule_get(vec[0]), *k; | |
1583 | ||
1584 | if(!actiondata) { | |
1585 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1586 | return 1; /* completed */ | |
1587 | } | |
1588 | /* Scheduled events are public information. Anyone with RIGHT_READ can see | |
1589 | * them. */ | |
1590 | sink_writes(ev_writer_sink(c->w), "253 Event information follows\n"); | |
1591 | for(k = actiondata; k; k = k->next) | |
1592 | sink_printf(ev_writer_sink(c->w), " %s %s\n", | |
1593 | quoteutf8(k->name), quoteutf8(k->value)); | |
1594 | sink_writes(ev_writer_sink(c->w), ".\n"); | |
1595 | return 1; /* completed */ | |
1596 | } | |
1597 | ||
1598 | static int c_schedule_del(struct conn *c, | |
1599 | char **vec, | |
1600 | int attribute((unused)) nvec) { | |
1601 | struct kvp *actiondata = schedule_get(vec[0]); | |
1602 | ||
1603 | if(!actiondata) { | |
1604 | sink_writes(ev_writer_sink(c->w), "555 No such event\n"); | |
1605 | return 1; /* completed */ | |
1606 | } | |
1607 | /* If you have admin rights you can delete anything. If you don't then you | |
1608 | * can only delete your own scheduled events. */ | |
1609 | if(!(c->rights & RIGHT_ADMIN)) { | |
1610 | const char *who = kvp_get(actiondata, "who"); | |
1611 | ||
1612 | if(!who || !c->who || strcmp(who, c->who)) { | |
1613 | sink_writes(ev_writer_sink(c->w), "551 Not authorized\n"); | |
1614 | return 1; /* completed */ | |
1615 | } | |
1616 | } | |
1617 | if(schedule_del(vec[0])) | |
1618 | sink_writes(ev_writer_sink(c->w), "550 Could not delete scheduled event\n"); | |
1619 | else | |
1620 | sink_writes(ev_writer_sink(c->w), "250 Deleted\n"); | |
1621 | return 1; /* completed */ | |
1622 | } | |
1623 | ||
1624 | static int c_schedule_add(struct conn *c, | |
1625 | char **vec, | |
1626 | int nvec) { | |
1627 | struct kvp *actiondata = 0; | |
067eeb5f | 1628 | const char *id; |
2b33c4cf RK |
1629 | |
1630 | /* Standard fields */ | |
1631 | kvp_set(&actiondata, "who", c->who); | |
1632 | kvp_set(&actiondata, "when", vec[0]); | |
1633 | kvp_set(&actiondata, "priority", vec[1]); | |
1634 | kvp_set(&actiondata, "action", vec[2]); | |
1635 | /* Action-dependent fields */ | |
1636 | if(!strcmp(vec[2], "play")) { | |
1637 | if(nvec != 4) { | |
1638 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1639 | return 1; | |
1640 | } | |
1641 | if(!trackdb_exists(vec[3])) { | |
1642 | sink_writes(ev_writer_sink(c->w), "550 Track is not in database\n"); | |
1643 | return 1; | |
1644 | } | |
1645 | kvp_set(&actiondata, "track", vec[3]); | |
1646 | } else if(!strcmp(vec[2], "set-global")) { | |
1647 | if(nvec < 4 || nvec > 5) { | |
1648 | sink_writes(ev_writer_sink(c->w), "550 Wrong number of arguments\n"); | |
1649 | return 1; | |
1650 | } | |
1651 | kvp_set(&actiondata, "key", vec[3]); | |
1652 | if(nvec > 4) | |
1653 | kvp_set(&actiondata, "value", vec[4]); | |
1654 | } else { | |
1655 | sink_writes(ev_writer_sink(c->w), "550 Unknown action\n"); | |
1656 | return 1; | |
1657 | } | |
1658 | /* schedule_add() checks user rights */ | |
1659 | id = schedule_add(c->ev, actiondata); | |
1660 | if(!id) | |
1661 | sink_writes(ev_writer_sink(c->w), "550 Cannot add scheduled event\n"); | |
1662 | else | |
1663 | sink_printf(ev_writer_sink(c->w), "252 %s\n", id); | |
1664 | return 1; | |
1665 | } | |
1666 | ||
d42e98ca RK |
1667 | static int c_adopt(struct conn *c, |
1668 | char **vec, | |
1669 | int attribute((unused)) nvec) { | |
1670 | struct queue_entry *q; | |
1671 | ||
1672 | if(!c->who) { | |
1673 | sink_writes(ev_writer_sink(c->w), "550 no identity\n"); | |
1674 | return 1; | |
1675 | } | |
1676 | if(!(q = queue_find(vec[0]))) { | |
1677 | sink_writes(ev_writer_sink(c->w), "550 no such track on the queue\n"); | |
1678 | return 1; | |
1679 | } | |
1680 | if(q->origin != origin_random) { | |
1681 | sink_writes(ev_writer_sink(c->w), "550 not a random track\n"); | |
1682 | return 1; | |
1683 | } | |
1684 | q->origin = origin_adopted; | |
1685 | q->submitter = xstrdup(c->who); | |
1686 | eventlog("adopted", q->id, q->submitter, (char *)0); | |
1687 | queue_write(); | |
1688 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); | |
1689 | return 1; | |
1690 | } | |
1691 | ||
ddbf05c8 RK |
1692 | static int playlist_response(struct conn *c, |
1693 | int err) { | |
1694 | switch(err) { | |
1695 | case 0: | |
1696 | assert(!"cannot cope with success"); | |
1697 | case EACCES: | |
1698 | sink_writes(ev_writer_sink(c->w), "550 Access denied\n"); | |
1699 | break; | |
1700 | case EINVAL: | |
1701 | sink_writes(ev_writer_sink(c->w), "550 Invalid playlist name\n"); | |
1702 | break; | |
1703 | case ENOENT: | |
1704 | sink_writes(ev_writer_sink(c->w), "555 No such playlist\n"); | |
1705 | break; | |
1706 | default: | |
1707 | sink_writes(ev_writer_sink(c->w), "550 Error accessing playlist\n"); | |
1708 | break; | |
1709 | } | |
1710 | return 1; | |
1711 | } | |
1712 | ||
1713 | static int c_playlist_get(struct conn *c, | |
1714 | char **vec, | |
1715 | int attribute((unused)) nvec) { | |
1716 | char **tracks; | |
1717 | int err; | |
1718 | ||
1719 | if(!(err = trackdb_playlist_get(vec[0], c->who, &tracks, 0, 0))) | |
1720 | return list_response(c, "Playlist contents follows", tracks); | |
1721 | else | |
1722 | return playlist_response(c, err); | |
1723 | } | |
1724 | ||
1725 | static int c_playlist_set(struct conn *c, | |
1726 | char **vec, | |
1727 | int attribute((unused)) nvec) { | |
f65f5aff RK |
1728 | return fetch_body(c, c_playlist_set_body, vec[0]); |
1729 | } | |
1730 | ||
1731 | static int c_playlist_set_body(struct conn *c, | |
1732 | char **body, | |
1733 | int nbody, | |
1734 | void *u) { | |
1735 | const char *playlist = u; | |
1736 | int err; | |
1737 | ||
440af55d RK |
1738 | if(!c->locked_playlist |
1739 | || strcmp(playlist, c->locked_playlist)) { | |
1740 | sink_writes(ev_writer_sink(c->w), "550 Playlist is not locked\n"); | |
1741 | return 1; | |
1742 | } | |
f65f5aff RK |
1743 | if(!(err = trackdb_playlist_set(playlist, c->who, |
1744 | body, nbody, 0))) { | |
1745 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); | |
1746 | return 1; | |
1747 | } else | |
1748 | return playlist_response(c, err); | |
ddbf05c8 RK |
1749 | } |
1750 | ||
1751 | static int c_playlist_get_share(struct conn *c, | |
1752 | char **vec, | |
1753 | int attribute((unused)) nvec) { | |
1754 | char *share; | |
1755 | int err; | |
1756 | ||
1757 | if(!(err = trackdb_playlist_get(vec[0], c->who, 0, 0, &share))) { | |
f65f5aff | 1758 | sink_printf(ev_writer_sink(c->w), "252 %s\n", quoteutf8(share)); |
ddbf05c8 RK |
1759 | return 1; |
1760 | } else | |
1761 | return playlist_response(c, err); | |
1762 | } | |
1763 | ||
1764 | static int c_playlist_set_share(struct conn *c, | |
1765 | char **vec, | |
1766 | int attribute((unused)) nvec) { | |
1767 | int err; | |
1768 | ||
1769 | if(!(err = trackdb_playlist_set(vec[0], c->who, 0, 0, vec[1]))) { | |
f65f5aff | 1770 | sink_printf(ev_writer_sink(c->w), "250 OK\n"); |
ddbf05c8 RK |
1771 | return 1; |
1772 | } else | |
1773 | return playlist_response(c, err); | |
1774 | } | |
1775 | ||
1776 | static int c_playlists(struct conn *c, | |
1777 | char attribute((unused)) **vec, | |
1778 | int attribute((unused)) nvec) { | |
1779 | char **p; | |
1780 | ||
1781 | trackdb_playlist_list(c->who, &p, 0); | |
1782 | return list_response(c, "List of playlists follows", p); | |
1783 | } | |
1784 | ||
1785 | static int c_playlist_delete(struct conn *c, | |
1786 | char **vec, | |
1787 | int attribute((unused)) nvec) { | |
1788 | int err; | |
1789 | ||
1790 | if(!(err = trackdb_playlist_delete(vec[0], c->who))) { | |
f65f5aff | 1791 | sink_writes(ev_writer_sink(c->w), "250 OK\n"); |
ddbf05c8 RK |
1792 | return 1; |
1793 | } else | |
1794 | return playlist_response(c, err); | |
1795 | } | |
1796 | ||
1797 | static int c_playlist_lock(struct conn *c, | |
1798 | char **vec, | |
1799 | int attribute((unused)) nvec) { | |
1800 | int err; | |
1801 | struct conn *cc; | |
1802 | ||
1803 | /* Check we're allowed to modify this playlist */ | |
1804 | if((err = trackdb_playlist_set(vec[0], c->who, 0, 0, 0))) | |
1805 | return playlist_response(c, err); | |
1806 | /* If we hold a lock don't allow a new one */ | |
1807 | if(c->locked_playlist) { | |
1808 | sink_writes(ev_writer_sink(c->w), "550 Already holding a lock\n"); | |
1809 | return 1; | |
1810 | } | |
1811 | /* See if some other connection locks the same playlist */ | |
1812 | for(cc = connections; cc; cc = cc->next) | |
1813 | if(cc->locked_playlist && !strcmp(cc->locked_playlist, vec[0])) | |
1814 | break; | |
1815 | if(cc) { | |
1816 | /* TODO: implement config->playlist_lock_timeout */ | |
1817 | sink_writes(ev_writer_sink(c->w), "550 Already locked\n"); | |
1818 | return 1; | |
1819 | } | |
1820 | c->locked_playlist = xstrdup(vec[0]); | |
1821 | time(&c->locked_when); | |
1822 | sink_writes(ev_writer_sink(c->w), "250 Acquired lock\n"); | |
1823 | return 1; | |
1824 | } | |
1825 | ||
1826 | static int c_playlist_unlock(struct conn *c, | |
f65f5aff | 1827 | char attribute((unused)) **vec, |
ddbf05c8 RK |
1828 | int attribute((unused)) nvec) { |
1829 | if(!c->locked_playlist) { | |
1830 | sink_writes(ev_writer_sink(c->w), "550 Not holding a lock\n"); | |
1831 | return 1; | |
1832 | } | |
1833 | c->locked_playlist = 0; | |
1834 | sink_writes(ev_writer_sink(c->w), "250 Released lock\n"); | |
1835 | return 1; | |
1836 | } | |
1837 | ||
460b9539 | 1838 | static const struct command { |
eb5dc014 | 1839 | /** @brief Command name */ |
460b9539 | 1840 | const char *name; |
eb5dc014 RK |
1841 | |
1842 | /** @brief Minimum number of arguments */ | |
1843 | int minargs; | |
1844 | ||
1845 | /** @brief Maximum number of arguments */ | |
1846 | int maxargs; | |
1847 | ||
1848 | /** @brief Function to process command */ | |
460b9539 | 1849 | int (*fn)(struct conn *, char **, int); |
eb5dc014 RK |
1850 | |
1851 | /** @brief Rights required to execute command | |
1852 | * | |
1853 | * 0 means that the command can be issued without logging in. If multiple | |
1854 | * bits are listed here any of those rights will do. | |
1855 | */ | |
1856 | rights_type rights; | |
460b9539 | 1857 | } commands[] = { |
0f55e905 | 1858 | { "adduser", 2, 3, c_adduser, RIGHT_ADMIN|RIGHT__LOCAL }, |
d42e98ca | 1859 | { "adopt", 1, 1, c_adopt, RIGHT_PLAY }, |
eb5dc014 | 1860 | { "allfiles", 0, 2, c_allfiles, RIGHT_READ }, |
ba39faf6 | 1861 | { "confirm", 1, 1, c_confirm, 0 }, |
b12be54a | 1862 | { "cookie", 1, 1, c_cookie, 0 }, |
eb5dc014 RK |
1863 | { "deluser", 1, 1, c_deluser, RIGHT_ADMIN|RIGHT__LOCAL }, |
1864 | { "dirs", 0, 2, c_dirs, RIGHT_READ }, | |
1865 | { "disable", 0, 1, c_disable, RIGHT_GLOBAL_PREFS }, | |
1866 | { "edituser", 3, 3, c_edituser, RIGHT_ADMIN|RIGHT_USERINFO }, | |
1867 | { "enable", 0, 0, c_enable, RIGHT_GLOBAL_PREFS }, | |
1868 | { "enabled", 0, 0, c_enabled, RIGHT_READ }, | |
1869 | { "exists", 1, 1, c_exists, RIGHT_READ }, | |
1870 | { "files", 0, 2, c_files, RIGHT_READ }, | |
1871 | { "get", 2, 2, c_get, RIGHT_READ }, | |
1872 | { "get-global", 1, 1, c_get_global, RIGHT_READ }, | |
1873 | { "length", 1, 1, c_length, RIGHT_READ }, | |
1874 | { "log", 0, 0, c_log, RIGHT_READ }, | |
1875 | { "make-cookie", 0, 0, c_make_cookie, RIGHT_READ }, | |
1876 | { "move", 2, 2, c_move, RIGHT_MOVE__MASK }, | |
1877 | { "moveafter", 1, INT_MAX, c_moveafter, RIGHT_MOVE__MASK }, | |
1878 | { "new", 0, 1, c_new, RIGHT_READ }, | |
1879 | { "nop", 0, 0, c_nop, 0 }, | |
1880 | { "part", 3, 3, c_part, RIGHT_READ }, | |
1881 | { "pause", 0, 0, c_pause, RIGHT_PAUSE }, | |
1882 | { "play", 1, 1, c_play, RIGHT_PLAY }, | |
7a853280 | 1883 | { "playafter", 2, INT_MAX, c_playafter, RIGHT_PLAY }, |
eb5dc014 | 1884 | { "playing", 0, 0, c_playing, RIGHT_READ }, |
ddbf05c8 | 1885 | { "playlist-delete", 1, 1, c_playlist_delete, RIGHT_PLAY }, |
fc80bbcd RK |
1886 | { "playlist-get", 1, 1, c_playlist_get, RIGHT_READ }, |
1887 | { "playlist-get-share", 1, 1, c_playlist_get_share, RIGHT_READ }, | |
ddbf05c8 RK |
1888 | { "playlist-lock", 1, 1, c_playlist_lock, RIGHT_PLAY }, |
1889 | { "playlist-set", 1, 1, c_playlist_set, RIGHT_PLAY }, | |
1890 | { "playlist-set-share", 2, 2, c_playlist_set_share, RIGHT_PLAY }, | |
1891 | { "playlist-unlock", 0, 0, c_playlist_unlock, RIGHT_PLAY }, | |
fc80bbcd | 1892 | { "playlists", 0, 0, c_playlists, RIGHT_READ }, |
eb5dc014 RK |
1893 | { "prefs", 1, 1, c_prefs, RIGHT_READ }, |
1894 | { "queue", 0, 0, c_queue, RIGHT_READ }, | |
1895 | { "random-disable", 0, 0, c_random_disable, RIGHT_GLOBAL_PREFS }, | |
1896 | { "random-enable", 0, 0, c_random_enable, RIGHT_GLOBAL_PREFS }, | |
1897 | { "random-enabled", 0, 0, c_random_enabled, RIGHT_READ }, | |
1898 | { "recent", 0, 0, c_recent, RIGHT_READ }, | |
1899 | { "reconfigure", 0, 0, c_reconfigure, RIGHT_ADMIN }, | |
ba39faf6 | 1900 | { "register", 3, 3, c_register, RIGHT_REGISTER|RIGHT__LOCAL }, |
6207d2f3 | 1901 | { "reminder", 1, 1, c_reminder, RIGHT__LOCAL }, |
eb5dc014 | 1902 | { "remove", 1, 1, c_remove, RIGHT_REMOVE__MASK }, |
dd9af5cb | 1903 | { "rescan", 0, INT_MAX, c_rescan, RIGHT_RESCAN }, |
eb5dc014 RK |
1904 | { "resolve", 1, 1, c_resolve, RIGHT_READ }, |
1905 | { "resume", 0, 0, c_resume, RIGHT_PAUSE }, | |
1906 | { "revoke", 0, 0, c_revoke, RIGHT_READ }, | |
1907 | { "rtp-address", 0, 0, c_rtp_address, 0 }, | |
2b33c4cf RK |
1908 | { "schedule-add", 3, INT_MAX, c_schedule_add, RIGHT_READ }, |
1909 | { "schedule-del", 1, 1, c_schedule_del, RIGHT_READ }, | |
1910 | { "schedule-get", 1, 1, c_schedule_get, RIGHT_READ }, | |
1911 | { "schedule-list", 0, 0, c_schedule_list, RIGHT_READ }, | |
eb5dc014 RK |
1912 | { "scratch", 0, 1, c_scratch, RIGHT_SCRATCH__MASK }, |
1913 | { "search", 1, 1, c_search, RIGHT_READ }, | |
1914 | { "set", 3, 3, c_set, RIGHT_PREFS, }, | |
1915 | { "set-global", 2, 2, c_set_global, RIGHT_GLOBAL_PREFS }, | |
1916 | { "shutdown", 0, 0, c_shutdown, RIGHT_ADMIN }, | |
1917 | { "stats", 0, 0, c_stats, RIGHT_READ }, | |
1918 | { "tags", 0, 0, c_tags, RIGHT_READ }, | |
1919 | { "unset", 2, 2, c_set, RIGHT_PREFS }, | |
1920 | { "unset-global", 1, 1, c_set_global, RIGHT_GLOBAL_PREFS }, | |
460b9539 | 1921 | { "user", 2, 2, c_user, 0 }, |
eb5dc014 RK |
1922 | { "userinfo", 2, 2, c_userinfo, RIGHT_READ }, |
1923 | { "users", 0, 0, c_users, RIGHT_READ }, | |
1924 | { "version", 0, 0, c_version, RIGHT_READ }, | |
1925 | { "volume", 0, 2, c_volume, RIGHT_READ|RIGHT_VOLUME } | |
460b9539 | 1926 | }; |
1927 | ||
f65f5aff RK |
1928 | /** @brief Fetch a command body |
1929 | * @param c Connection | |
1930 | * @param body_callback Called with body | |
1931 | * @param u Passed to body_callback | |
1932 | * @return 1 | |
1933 | */ | |
1934 | static int fetch_body(struct conn *c, | |
1935 | body_callback_type body_callback, | |
1936 | void *u) { | |
1937 | assert(c->line_reader == command); | |
1938 | c->line_reader = body_line; | |
1939 | c->body_callback = body_callback; | |
1940 | c->body_u = u; | |
1941 | vector_init(c->body); | |
1942 | return 1; | |
1943 | } | |
1944 | ||
1945 | /** @brief @ref line_reader_type callback for command body lines | |
1946 | * @param c Connection | |
1947 | * @param line Line | |
1948 | * @return 1 if complete, 0 if incomplete | |
1949 | * | |
1950 | * Called from reader_callback(). | |
1951 | */ | |
1952 | static int body_line(struct conn *c, | |
1953 | char *line) { | |
1954 | if(*line == '.') { | |
1955 | ++line; | |
1956 | if(!*line) { | |
1957 | /* That's the lot */ | |
1958 | c->line_reader = command; | |
1959 | vector_terminate(c->body); | |
1960 | return c->body_callback(c, c->body->vec, c->body->nvec, c->body_u); | |
1961 | } | |
1962 | } | |
1963 | vector_append(c->body, xstrdup(line)); | |
1964 | return 1; /* completed */ | |
1965 | } | |
1966 | ||
460b9539 | 1967 | static void command_error(const char *msg, void *u) { |
1968 | struct conn *c = u; | |
1969 | ||
1970 | sink_printf(ev_writer_sink(c->w), "500 parse error: %s\n", msg); | |
1971 | } | |
1972 | ||
f65f5aff RK |
1973 | /** @brief @ref line_reader_type callback for commands |
1974 | * @param c Connection | |
1975 | * @param line Line | |
1976 | * @return 1 if complete, 0 if incomplete | |
1977 | * | |
1978 | * Called from reader_callback(). | |
1979 | */ | |
460b9539 | 1980 | static int command(struct conn *c, char *line) { |
1981 | char **vec; | |
1982 | int nvec, n; | |
1983 | ||
1984 | D(("server command %s", line)); | |
f9635e06 RK |
1985 | /* We force everything into NFC as early as possible */ |
1986 | if(!(line = utf8_compose_canon(line, strlen(line), 0))) { | |
1987 | sink_writes(ev_writer_sink(c->w), "500 cannot normalize command\n"); | |
1988 | return 1; | |
1989 | } | |
460b9539 | 1990 | if(!(vec = split(line, &nvec, SPLIT_QUOTES, command_error, c))) { |
1991 | sink_writes(ev_writer_sink(c->w), "500 cannot parse command\n"); | |
1992 | return 1; | |
1993 | } | |
1994 | if(nvec == 0) { | |
1995 | sink_writes(ev_writer_sink(c->w), "500 do what?\n"); | |
1996 | return 1; | |
1997 | } | |
ba937f01 | 1998 | if((n = TABLE_FIND(commands, name, vec[0])) < 0) |
460b9539 | 1999 | sink_writes(ev_writer_sink(c->w), "500 unknown command\n"); |
2000 | else { | |
eb5dc014 RK |
2001 | if(commands[n].rights |
2002 | && !(c->rights & commands[n].rights)) { | |
2e9ba080 RK |
2003 | disorder_error(0, "%s attempted %s but lacks required rights", |
2004 | c->who ? c->who : "NULL", | |
834e7c4a | 2005 | commands[n].name); |
b4a80f69 | 2006 | sink_writes(ev_writer_sink(c->w), "510 Prohibited\n"); |
460b9539 | 2007 | return 1; |
2008 | } | |
2009 | ++vec; | |
2010 | --nvec; | |
2011 | if(nvec < commands[n].minargs) { | |
2012 | sink_writes(ev_writer_sink(c->w), "500 missing argument(s)\n"); | |
2013 | return 1; | |
2014 | } | |
2015 | if(nvec > commands[n].maxargs) { | |
2016 | sink_writes(ev_writer_sink(c->w), "500 too many arguments\n"); | |
2017 | return 1; | |
2018 | } | |
2019 | return commands[n].fn(c, vec, nvec); | |
2020 | } | |
2021 | return 1; /* completed */ | |
2022 | } | |
2023 | ||
2024 | /* redirect to the right reader callback for our current state */ | |
2025 | static int redirect_reader_callback(ev_source *ev, | |
2026 | ev_reader *reader, | |
460b9539 | 2027 | void *ptr, |
2028 | size_t bytes, | |
2029 | int eof, | |
2030 | void *u) { | |
2031 | struct conn *c = u; | |
2032 | ||
75d64210 | 2033 | return c->reader(ev, reader, ptr, bytes, eof, u); |
460b9539 | 2034 | } |
2035 | ||
2036 | /* the main command reader */ | |
2037 | static int reader_callback(ev_source attribute((unused)) *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 | char *eol; | |
2045 | int complete; | |
2046 | ||
2047 | D(("server reader_callback")); | |
2048 | while((eol = memchr(ptr, '\n', bytes))) { | |
2049 | *eol++ = 0; | |
2050 | ev_reader_consume(reader, eol - (char *)ptr); | |
f65f5aff | 2051 | complete = c->line_reader(c, ptr); /* usually command() */ |
460b9539 | 2052 | bytes -= (eol - (char *)ptr); |
2053 | ptr = eol; | |
2054 | if(!complete) { | |
2055 | /* the command had better have set a new reader callback */ | |
2056 | if(bytes || eof) | |
2057 | /* there are further bytes to read, or we are at eof; arrange for the | |
2058 | * command's reader callback to handle them */ | |
2059 | return ev_reader_incomplete(reader); | |
2060 | /* nothing's going on right now */ | |
2061 | return 0; | |
2062 | } | |
2063 | /* command completed, we can go around and handle the next one */ | |
2064 | } | |
2065 | if(eof) { | |
2066 | if(bytes) | |
2e9ba080 | 2067 | disorder_error(0, "S%x unterminated line", c->tag); |
8d8b8c1f | 2068 | D(("normal reader close")); |
397ef7bb RK |
2069 | c->r = 0; |
2070 | if(c->w) { | |
8d8b8c1f | 2071 | D(("close associated writer")); |
397ef7bb RK |
2072 | ev_writer_close(c->w); |
2073 | c->w = 0; | |
2074 | } | |
0126692c | 2075 | remove_connection(c); |
460b9539 | 2076 | } |
2077 | return 0; | |
2078 | } | |
2079 | ||
2080 | static int listen_callback(ev_source *ev, | |
2081 | int fd, | |
2082 | const struct sockaddr attribute((unused)) *remote, | |
2083 | socklen_t attribute((unused)) rlen, | |
2084 | void *u) { | |
2085 | const struct listener *l = u; | |
2086 | struct conn *c = xmalloc(sizeof *c); | |
2087 | static unsigned tags; | |
2088 | ||
2089 | D(("server listen_callback fd %d (%s)", fd, l->name)); | |
2090 | nonblock(fd); | |
2091 | cloexec(fd); | |
ad492e00 | 2092 | c->next = connections; |
460b9539 | 2093 | c->tag = tags++; |
2094 | c->ev = ev; | |
e8c92ba7 RK |
2095 | c->w = ev_writer_new(ev, fd, writer_error, c, |
2096 | "client writer"); | |
31e2a93e | 2097 | if(!c->w) { |
2e9ba080 | 2098 | disorder_error(0, "ev_writer_new for file inbound connection (fd=%d) failed", |
31e2a93e RK |
2099 | fd); |
2100 | close(fd); | |
2101 | return 0; | |
2102 | } | |
e8c92ba7 RK |
2103 | c->r = ev_reader_new(ev, fd, redirect_reader_callback, reader_error, c, |
2104 | "client reader"); | |
31e2a93e RK |
2105 | if(!c->r) |
2106 | /* Main reason for failure is the FD is too big and that will already have | |
2107 | * been handled */ | |
2e9ba080 RK |
2108 | disorder_fatal(0, |
2109 | "ev_reader_new for file inbound connection (fd=%d) failed", | |
2110 | fd); | |
75d64210 | 2111 | ev_tie(c->r, c->w); |
460b9539 | 2112 | c->fd = fd; |
2113 | c->reader = reader_callback; | |
2114 | c->l = l; | |
eb5dc014 | 2115 | c->rights = 0; |
f65f5aff | 2116 | c->line_reader = command; |
ad492e00 | 2117 | connections = c; |
460b9539 | 2118 | gcry_randomize(c->nonce, sizeof c->nonce, GCRY_STRONG_RANDOM); |
7b32e917 RK |
2119 | sink_printf(ev_writer_sink(c->w), "231 %d %s %s\n", |
2120 | 2, | |
b3141726 RK |
2121 | config->authorization_algorithm, |
2122 | hex(c->nonce, sizeof c->nonce)); | |
460b9539 | 2123 | return 0; |
2124 | } | |
2125 | ||
2126 | int server_start(ev_source *ev, int pf, | |
2127 | size_t socklen, const struct sockaddr *sa, | |
2128 | const char *name) { | |
2129 | int fd; | |
2130 | struct listener *l = xmalloc(sizeof *l); | |
2131 | static const int one = 1; | |
2132 | ||
2133 | D(("server_init socket %s", name)); | |
2134 | fd = xsocket(pf, SOCK_STREAM, 0); | |
2135 | xsetsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof one); | |
2136 | if(bind(fd, sa, socklen) < 0) { | |
2e9ba080 | 2137 | disorder_error(errno, "error binding to %s", name); |
460b9539 | 2138 | return -1; |
2139 | } | |
2140 | xlisten(fd, 128); | |
2141 | nonblock(fd); | |
2142 | cloexec(fd); | |
2143 | l->name = name; | |
2144 | l->pf = pf; | |
e8c92ba7 RK |
2145 | if(ev_listen(ev, fd, listen_callback, l, "server listener")) |
2146 | exit(EXIT_FAILURE); | |
2e9ba080 | 2147 | disorder_info("listening on %s", name); |
460b9539 | 2148 | return fd; |
2149 | } | |
2150 | ||
2151 | int server_stop(ev_source *ev, int fd) { | |
2152 | xclose(fd); | |
2153 | return ev_listen_cancel(ev, fd); | |
2154 | } | |
2155 | ||
2156 | /* | |
2157 | Local Variables: | |
2158 | c-basic-offset:2 | |
2159 | comment-column:40 | |
2160 | fill-column:79 | |
2161 | End: | |
2162 | */ |