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460b9539 | 1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2006 Richard Kettlewell | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "types.h" | |
23 | ||
24 | #include <sys/types.h> | |
25 | #include <sys/socket.h> | |
26 | #include <netinet/in.h> | |
27 | #include <sys/un.h> | |
28 | #include <string.h> | |
29 | #include <stdio.h> | |
30 | #include <unistd.h> | |
31 | #include <errno.h> | |
32 | #include <netdb.h> | |
33 | #include <stdlib.h> | |
34 | #include <assert.h> | |
35 | #include <inttypes.h> | |
36 | #include <stddef.h> | |
37 | ||
38 | #include "log.h" | |
39 | #include "mem.h" | |
40 | #include "configuration.h" | |
41 | #include "queue.h" | |
42 | #include "eclient.h" | |
43 | #include "charset.h" | |
44 | #include "hex.h" | |
45 | #include "split.h" | |
46 | #include "vector.h" | |
47 | #include "inputline.h" | |
48 | #include "kvp.h" | |
49 | #include "syscalls.h" | |
50 | #include "printf.h" | |
51 | #include "addr.h" | |
52 | #include "authhash.h" | |
53 | #include "table.h" | |
54 | #include "client-common.h" | |
55 | ||
56 | /* TODO: more commands */ | |
57 | ||
58 | /* Types *********************************************************************/ | |
59 | ||
60 | enum client_state { | |
61 | state_disconnected, /* not connected */ | |
62 | state_connecting, /* waiting for connect() */ | |
63 | state_connected, /* connected but not authenticated */ | |
64 | state_idle, /* not doing anything */ | |
65 | state_cmdresponse, /* waiting for command resonse */ | |
66 | state_body, /* accumulating body */ | |
67 | state_log, /* monitoring log */ | |
68 | }; | |
69 | ||
70 | static const char *const states[] = { | |
71 | "disconnected", | |
72 | "connecting", | |
73 | "connected", | |
74 | "idle", | |
75 | "cmdresponse", | |
76 | "body", | |
77 | "log" | |
78 | }; | |
79 | ||
80 | struct operation; /* forward decl */ | |
81 | ||
82 | typedef void operation_callback(disorder_eclient *c, struct operation *op); | |
83 | ||
84 | /* A pending operation. This can be either a command or part of the | |
85 | * authentication protocol. In the former case new commands are appended to | |
86 | * the list, in the latter case they are inserted at the front. */ | |
87 | struct operation { | |
88 | struct operation *next; /* next operation */ | |
89 | char *cmd; /* command to send or 0 */ | |
90 | operation_callback *opcallback; /* internal completion callback */ | |
91 | void (*completed)(); /* user completion callback or 0 */ | |
92 | void *v; /* data for COMPLETED */ | |
93 | disorder_eclient *client; /* owning client */ | |
94 | int sent; /* true if sent to server */ | |
95 | }; | |
96 | ||
97 | struct disorder_eclient { | |
98 | const char *ident; | |
99 | int fd; | |
100 | enum client_state state; /* current state */ | |
101 | int authenticated; /* true when authenicated */ | |
102 | struct dynstr output; /* output buffer */ | |
103 | struct dynstr input; /* input buffer */ | |
104 | int eof; /* input buffer is at EOF */ | |
105 | /* error reporting callbacks */ | |
106 | const disorder_eclient_callbacks *callbacks; | |
107 | void *u; | |
108 | /* operation queuue */ | |
109 | struct operation *ops, **opstail; | |
110 | /* accumulated response */ | |
111 | int rc; /* response code */ | |
112 | char *line; /* complete line */ | |
113 | struct vector vec; /* body */ | |
114 | /* log client callback */ | |
115 | const disorder_eclient_log_callbacks *log_callbacks; | |
116 | void *log_v; | |
117 | unsigned long statebits; /* current state */ | |
118 | }; | |
119 | ||
120 | /* Forward declarations ******************************************************/ | |
121 | ||
122 | static int start_connect(void *cc, | |
123 | const struct sockaddr *sa, | |
124 | socklen_t len, | |
125 | const char *ident); | |
126 | static void process_line(disorder_eclient *c, char *line); | |
127 | static int start_connect(void *cc, | |
128 | const struct sockaddr *sa, | |
129 | socklen_t len, | |
130 | const char *ident); | |
131 | static void maybe_connected(disorder_eclient *c); | |
132 | static void authbanner_opcallback(disorder_eclient *c, | |
133 | struct operation *op); | |
134 | static void authuser_opcallback(disorder_eclient *c, | |
135 | struct operation *op); | |
136 | static void complete(disorder_eclient *c); | |
137 | static void send_output(disorder_eclient *c); | |
138 | static void put(disorder_eclient *c, const char *s, size_t n); | |
139 | static void read_input(disorder_eclient *c); | |
140 | static void stash_command(disorder_eclient *c, | |
141 | int queuejump, | |
142 | operation_callback *opcallback, | |
143 | void (*completed)(), | |
144 | void *v, | |
145 | const char *cmd, | |
146 | ...); | |
147 | static void log_opcallback(disorder_eclient *c, struct operation *op); | |
148 | static void logline(disorder_eclient *c, const char *line); | |
149 | static void logentry_completed(disorder_eclient *c, int nvec, char **vec); | |
150 | static void logentry_failed(disorder_eclient *c, int nvec, char **vec); | |
151 | static void logentry_moved(disorder_eclient *c, int nvec, char **vec); | |
152 | static void logentry_playing(disorder_eclient *c, int nvec, char **vec); | |
153 | static void logentry_queue(disorder_eclient *c, int nvec, char **vec); | |
154 | static void logentry_recent_added(disorder_eclient *c, int nvec, char **vec); | |
155 | static void logentry_recent_removed(disorder_eclient *c, int nvec, char **vec); | |
156 | static void logentry_removed(disorder_eclient *c, int nvec, char **vec); | |
157 | static void logentry_scratched(disorder_eclient *c, int nvec, char **vec); | |
158 | static void logentry_state(disorder_eclient *c, int nvec, char **vec); | |
159 | static void logentry_volume(disorder_eclient *c, int nvec, char **vec); | |
160 | ||
161 | /* Tables ********************************************************************/ | |
162 | ||
163 | static const struct logentry_handler { | |
164 | const char *name; | |
165 | int min, max; | |
166 | void (*handler)(disorder_eclient *c, | |
167 | int nvec, | |
168 | char **vec); | |
169 | } logentry_handlers[] = { | |
170 | #define LE(X, MIN, MAX) { #X, MIN, MAX, logentry_##X } | |
171 | LE(completed, 1, 1), | |
172 | LE(failed, 2, 2), | |
173 | LE(moved, 1, 1), | |
174 | LE(playing, 1, 2), | |
175 | LE(queue, 2, INT_MAX), | |
176 | LE(recent_added, 2, INT_MAX), | |
177 | LE(recent_removed, 1, 1), | |
178 | LE(removed, 1, 2), | |
179 | LE(scratched, 2, 2), | |
180 | LE(state, 1, 1), | |
181 | LE(volume, 2, 2) | |
182 | }; | |
183 | ||
184 | /* Setup and teardown ********************************************************/ | |
185 | ||
186 | disorder_eclient *disorder_eclient_new(const disorder_eclient_callbacks *cb, | |
187 | void *u) { | |
188 | disorder_eclient *c = xmalloc(sizeof *c); | |
189 | D(("disorder_eclient_new")); | |
190 | c->fd = -1; | |
191 | c->callbacks = cb; | |
192 | c->u = u; | |
193 | c->opstail = &c->ops; | |
194 | vector_init(&c->vec); | |
195 | dynstr_init(&c->input); | |
196 | dynstr_init(&c->output); | |
1c0d78bd RK |
197 | if(!config->password) { |
198 | error(0, "no password set"); | |
199 | return 0; | |
200 | } | |
460b9539 | 201 | return c; |
202 | } | |
203 | ||
204 | void disorder_eclient_close(disorder_eclient *c) { | |
205 | struct operation *op; | |
206 | ||
207 | D(("disorder_eclient_close")); | |
208 | if(c->fd != -1) { | |
209 | D(("disorder_eclient_close closing fd %d", c->fd)); | |
210 | c->callbacks->poll(c->u, c, c->fd, 0); | |
211 | xclose(c->fd); | |
212 | c->fd = -1; | |
213 | c->state = state_disconnected; | |
214 | } | |
215 | c->output.nvec = 0; | |
216 | c->input.nvec = 0; | |
217 | c->eof = 0; | |
218 | c->authenticated = 0; | |
219 | /* We'll need to resend all operations */ | |
220 | for(op = c->ops; op; op = op->next) | |
221 | op->sent = 0; | |
222 | } | |
223 | ||
224 | /* Error reporting ***********************************************************/ | |
225 | ||
226 | /* called when a connection error occurs */ | |
227 | static int comms_error(disorder_eclient *c, const char *fmt, ...) { | |
228 | va_list ap; | |
229 | char *s; | |
230 | ||
231 | D(("comms_error")); | |
232 | va_start(ap, fmt); | |
233 | byte_xvasprintf(&s, fmt, ap); | |
234 | va_end(ap); | |
235 | disorder_eclient_close(c); | |
236 | c->callbacks->comms_error(c->u, s); | |
237 | return -1; | |
238 | } | |
239 | ||
240 | /* called when the server reports an error */ | |
241 | static int protocol_error(disorder_eclient *c, struct operation *op, | |
242 | int code, const char *fmt, ...) { | |
243 | va_list ap; | |
244 | char *s; | |
245 | ||
246 | D(("protocol_error")); | |
247 | va_start(ap, fmt); | |
248 | byte_xvasprintf(&s, fmt, ap); | |
249 | va_end(ap); | |
250 | c->callbacks->protocol_error(c->u, op->v, code, s); | |
251 | return -1; | |
252 | } | |
253 | ||
254 | /* State machine *************************************************************/ | |
255 | ||
256 | void disorder_eclient_polled(disorder_eclient *c, unsigned mode) { | |
257 | struct operation *op; | |
258 | ||
259 | D(("disorder_eclient_polled fd=%d state=%s mode=[%s %s]", | |
260 | c->fd, states[c->state], | |
261 | mode & DISORDER_POLL_READ ? "READ" : "", | |
262 | mode & DISORDER_POLL_WRITE ? "WRITE" : "")); | |
263 | /* The pattern here is to check each possible state in turn and try to | |
264 | * advance (though on error we might go back). If we advance we leave open | |
265 | * the possibility of falling through to the next state, but we set the mode | |
266 | * bits to 0, to avoid false positives (which matter more in some cases than | |
267 | * others). */ | |
268 | ||
269 | if(c->state == state_disconnected) { | |
270 | D(("state_disconnected")); | |
271 | with_sockaddr(c, start_connect); | |
272 | /* might now be state_disconnected (on error), state_connecting (slow | |
273 | * connect) or state_connected (fast connect). If state_disconnected then | |
274 | * we just rely on a periodic callback from the event loop sometime. */ | |
275 | mode = 0; | |
276 | } | |
277 | ||
278 | if(c->state == state_connecting && mode) { | |
279 | D(("state_connecting")); | |
280 | maybe_connected(c); | |
281 | /* Might be state_disconnected (on error) or state_connected (on success). | |
282 | * In the former case we rely on the event loop for a periodic callback to | |
283 | * retry. */ | |
284 | mode = 0; | |
285 | } | |
286 | ||
287 | if(c->state == state_connected) { | |
288 | D(("state_connected")); | |
289 | /* We just connected. Initiate the authentication protocol. */ | |
290 | stash_command(c, 1/*queuejump*/, authbanner_opcallback, | |
291 | 0/*completed*/, 0/*v*/, 0/*cmd*/); | |
292 | /* We never stay is state_connected very long. We could in principle jump | |
293 | * straight to state_cmdresponse since there's actually no command to | |
294 | * send, but that would arguably be cheating. */ | |
295 | c->state = state_idle; | |
296 | } | |
297 | ||
298 | if(c->state == state_idle) { | |
299 | D(("state_idle")); | |
300 | /* We are connected, and have finished any command we set off, look for | |
301 | * some work to do */ | |
302 | if(c->ops) { | |
303 | D(("have ops")); | |
304 | if(c->authenticated) { | |
305 | /* Transmit all unsent operations */ | |
306 | for(op = c->ops; op; op = op->next) { | |
307 | if(!op->sent) { | |
308 | put(c, op->cmd, strlen(op->cmd)); | |
309 | op->sent = 1; | |
310 | } | |
311 | } | |
312 | } else { | |
313 | /* Just send the head operation */ | |
314 | if(c->ops->cmd && !c->ops->sent) { | |
315 | put(c, c->ops->cmd, strlen(c->ops->cmd)); | |
316 | c->ops->sent = 1; | |
317 | } | |
318 | } | |
319 | /* Awaiting response for the operation at the head of the list */ | |
320 | c->state = state_cmdresponse; | |
321 | } else | |
322 | /* genuinely idle */ | |
323 | c->callbacks->report(c->u, 0); | |
324 | } | |
325 | ||
326 | if(c->state == state_cmdresponse | |
327 | || c->state == state_body | |
328 | || c->state == state_log) { | |
329 | D(("state_%s", states[c->state])); | |
330 | /* We are awaiting a response */ | |
331 | if(mode & DISORDER_POLL_WRITE) send_output(c); | |
332 | if(mode & DISORDER_POLL_READ) read_input(c); | |
333 | /* There are a couple of reasons we might want to re-enter the state | |
334 | * machine from the top. state_idle is obvious: there may be further | |
335 | * commands to process. Re-entering on state_disconnected means that we | |
336 | * immediately retry connection if a comms error occurs during a command. | |
337 | * This is different to the case where a connection fails, where we await a | |
338 | * spontaneous call to initiate the retry. */ | |
339 | switch(c->state) { | |
340 | case state_disconnected: /* lost connection */ | |
341 | case state_idle: /* completed a command */ | |
342 | D(("retrying")); | |
343 | disorder_eclient_polled(c, 0); | |
344 | return; | |
345 | default: | |
346 | break; | |
347 | } | |
348 | } | |
349 | ||
350 | /* Figure out what to set the mode to */ | |
351 | switch(c->state) { | |
352 | case state_disconnected: | |
353 | D(("state_disconnected (2)")); | |
354 | /* Probably an error occurred. Await a retry. */ | |
355 | mode = 0; | |
356 | break; | |
357 | case state_connecting: | |
358 | D(("state_connecting (2)")); | |
359 | /* Waiting for connect to complete */ | |
360 | mode = DISORDER_POLL_READ|DISORDER_POLL_WRITE; | |
361 | break; | |
362 | case state_connected: | |
363 | D(("state_connected (2)")); | |
364 | assert(!"should never be in state_connected here"); | |
365 | break; | |
366 | case state_idle: | |
367 | D(("state_idle (2)")); | |
368 | /* Connected but nothing to do. */ | |
369 | mode = 0; | |
370 | break; | |
371 | case state_cmdresponse: | |
372 | case state_body: | |
373 | case state_log: | |
374 | D(("state_%s (2)", states[c->state])); | |
375 | /* Gathering a response. Wait for input. */ | |
376 | mode = DISORDER_POLL_READ; | |
377 | /* Flush any pending output. */ | |
378 | if(c->output.nvec) mode |= DISORDER_POLL_WRITE; | |
379 | break; | |
380 | } | |
381 | D(("fd=%d new mode [%s %s]", | |
382 | c->fd, | |
383 | mode & DISORDER_POLL_READ ? "READ" : "", | |
384 | mode & DISORDER_POLL_WRITE ? "WRITE" : "")); | |
385 | if(c->fd != -1) c->callbacks->poll(c->u, c, c->fd, mode); | |
386 | } | |
387 | ||
388 | /* Called to start connecting */ | |
389 | static int start_connect(void *cc, | |
390 | const struct sockaddr *sa, | |
391 | socklen_t len, | |
392 | const char *ident) { | |
393 | disorder_eclient *c = cc; | |
394 | ||
395 | D(("start_connect")); | |
396 | c->ident = xstrdup(ident); | |
397 | if(c->fd != -1) { | |
398 | xclose(c->fd); | |
399 | c->fd = -1; | |
400 | } | |
401 | if((c->fd = socket(sa->sa_family, SOCK_STREAM, 0)) < 0) | |
402 | return comms_error(c, "socket: %s", strerror(errno)); | |
403 | c->eof = 0; | |
404 | nonblock(c->fd); | |
405 | if(connect(c->fd, sa, len) < 0) { | |
406 | switch(errno) { | |
407 | case EINTR: | |
408 | case EINPROGRESS: | |
409 | c->state = state_connecting; | |
410 | /* We are called from _polled so the state machine will get to do its | |
411 | * thing */ | |
412 | return 0; | |
413 | default: | |
414 | /* Signal the error to the caller. */ | |
415 | return comms_error(c, "connecting to %s: %s", ident, strerror(errno)); | |
416 | } | |
417 | } else | |
418 | c->state = state_connected; | |
419 | return 0; | |
420 | } | |
421 | ||
422 | /* Called when maybe connected */ | |
423 | static void maybe_connected(disorder_eclient *c) { | |
424 | /* We either connected, or got an error. */ | |
425 | int err; | |
426 | socklen_t len = sizeof err; | |
427 | ||
428 | D(("maybe_connected")); | |
429 | /* Work around over-enthusiastic error slippage */ | |
430 | if(getsockopt(c->fd, SOL_SOCKET, SO_ERROR, &err, &len) < 0) | |
431 | err = errno; | |
432 | if(err) { | |
433 | /* The connection failed */ | |
434 | comms_error(c, "connecting to %s: %s", c->ident, strerror(err)); | |
435 | /* sets state_disconnected */ | |
436 | } else { | |
437 | /* The connection succeeded */ | |
438 | c->state = state_connected; | |
439 | } | |
440 | } | |
441 | ||
442 | /* Authentication ************************************************************/ | |
443 | ||
444 | static void authbanner_opcallback(disorder_eclient *c, | |
445 | struct operation *op) { | |
446 | size_t nonce_len; | |
447 | const unsigned char *nonce; | |
448 | const char *res; | |
449 | ||
450 | D(("authbanner_opcallback")); | |
451 | if(c->rc / 100 != 2) { | |
452 | /* Banner told us to go away. We cannot proceed. */ | |
453 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
454 | disorder_eclient_close(c); | |
455 | return; | |
456 | } | |
457 | nonce = unhex(c->line + 4, &nonce_len); | |
458 | res = authhash(nonce, nonce_len, config->password); | |
459 | stash_command(c, 1/*queuejump*/, authuser_opcallback, 0/*completed*/, 0/*v*/, | |
460 | "user", quoteutf8(config->username), quoteutf8(res), | |
461 | (char *)0); | |
462 | } | |
463 | ||
464 | static void authuser_opcallback(disorder_eclient *c, | |
465 | struct operation *op) { | |
466 | D(("authuser_opcallback")); | |
467 | if(c->rc / 100 != 2) { | |
468 | /* Wrong password or something. We cannot proceed. */ | |
469 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
470 | disorder_eclient_close(c); | |
471 | return; | |
472 | } | |
473 | /* OK, we're authenticated now. */ | |
474 | c->authenticated = 1; | |
475 | if(c->log_callbacks && !(c->ops && c->ops->opcallback == log_opcallback)) | |
476 | /* We are a log client, switch to logging mode */ | |
477 | stash_command(c, 0/*queuejump*/, log_opcallback, 0/*completed*/, c->log_v, | |
478 | "log", (char *)0); | |
479 | } | |
480 | ||
481 | /* Output ********************************************************************/ | |
482 | ||
483 | /* Chop N bytes off the front of a dynstr */ | |
484 | static void consume(struct dynstr *d, int n) { | |
485 | D(("consume %d", n)); | |
486 | assert(d->nvec >= n); | |
487 | memmove(d->vec, d->vec + n, d->nvec - n); | |
488 | d->nvec -= n; | |
489 | } | |
490 | ||
491 | /* Write some bytes */ | |
492 | static void put(disorder_eclient *c, const char *s, size_t n) { | |
493 | D(("put %d %.*s", c->fd, (int)n, s)); | |
494 | dynstr_append_bytes(&c->output, s, n); | |
495 | } | |
496 | ||
497 | /* Called when we can write to our FD, or at any other time */ | |
498 | static void send_output(disorder_eclient *c) { | |
499 | int n; | |
500 | ||
501 | D(("send_output %d bytes pending", c->output.nvec)); | |
502 | if(c->state > state_connecting && c->output.nvec) { | |
503 | n = write(c->fd, c->output.vec, c->output.nvec); | |
504 | if(n < 0) { | |
505 | switch(errno) { | |
506 | case EINTR: | |
507 | case EAGAIN: | |
508 | break; | |
509 | default: | |
510 | comms_error(c, "writing to %s: %s", c->ident, strerror(errno)); | |
511 | break; | |
512 | } | |
513 | } else | |
514 | consume(&c->output, n); | |
515 | } | |
516 | } | |
517 | ||
518 | /* Input *********************************************************************/ | |
519 | ||
520 | /* Called when c->fd might be readable, or at any other time */ | |
521 | static void read_input(disorder_eclient *c) { | |
522 | char *nl; | |
523 | int n; | |
524 | char buffer[512]; | |
525 | ||
526 | D(("read_input in state %s", states[c->state])); | |
527 | if(c->state <= state_connected) return; /* ignore bogus calls */ | |
528 | /* read some more input */ | |
529 | n = read(c->fd, buffer, sizeof buffer); | |
530 | if(n < 0) { | |
531 | switch(errno) { | |
532 | case EINTR: | |
533 | case EAGAIN: | |
534 | break; | |
535 | default: | |
536 | comms_error(c, "reading from %s: %s", c->ident, strerror(errno)); | |
537 | break; | |
538 | } | |
539 | return; /* no new input to process */ | |
540 | } else if(n) { | |
541 | D(("read %d bytes: [%.*s]", n, n, buffer)); | |
542 | dynstr_append_bytes(&c->input, buffer, n); | |
543 | } else | |
544 | c->eof = 1; | |
545 | /* might have more than one line to process */ | |
546 | while(c->state > state_connecting | |
547 | && (nl = memchr(c->input.vec, '\n', c->input.nvec))) { | |
548 | process_line(c, xstrndup(c->input.vec, nl - c->input.vec)); | |
549 | /* we might have disconnected along the way, which zogs the input buffer */ | |
550 | if(c->state > state_connecting) | |
551 | consume(&c->input, (nl - c->input.vec) + 1); | |
552 | } | |
346ba8d5 | 553 | if(c->eof) { |
460b9539 | 554 | comms_error(c, "reading from %s: server disconnected", c->ident); |
346ba8d5 | 555 | c->authenticated = 0; |
556 | } | |
460b9539 | 557 | } |
558 | ||
559 | /* called with a line that has just been read */ | |
560 | static void process_line(disorder_eclient *c, char *line) { | |
561 | D(("process_line %d [%s]", c->fd, line)); | |
562 | switch(c->state) { | |
563 | case state_cmdresponse: | |
564 | /* This is the first line of a response */ | |
565 | if(!(line[0] >= '0' && line[0] <= '9' | |
566 | && line[1] >= '0' && line[1] <= '9' | |
567 | && line[2] >= '0' && line[2] <= '9' | |
568 | && line[3] == ' ')) | |
569 | fatal(0, "invalid response from server: %s", line); | |
570 | c->rc = (line[0] * 10 + line[1]) * 10 + line[2] - 111 * '0'; | |
571 | c->line = line; | |
572 | switch(c->rc % 10) { | |
573 | case 3: | |
574 | /* We need to collect the body. */ | |
575 | c->state = state_body; | |
576 | c->vec.nvec = 0; | |
577 | break; | |
578 | case 4: | |
579 | assert(c->log_callbacks != 0); | |
580 | if(c->log_callbacks->connected) | |
581 | c->log_callbacks->connected(c->log_v); | |
582 | c->state = state_log; | |
583 | break; | |
584 | default: | |
585 | /* We've got the whole response. Go into the idle state so the state | |
586 | * machine knows we're done and then call the operation callback. */ | |
587 | complete(c); | |
588 | break; | |
589 | } | |
590 | break; | |
591 | case state_body: | |
592 | if(strcmp(line, ".")) { | |
593 | /* A line from the body */ | |
594 | vector_append(&c->vec, line + (line[0] == '.')); | |
595 | } else { | |
596 | /* End of the body. */ | |
597 | vector_terminate(&c->vec); | |
598 | complete(c); | |
599 | } | |
600 | break; | |
601 | case state_log: | |
602 | if(strcmp(line, ".")) { | |
603 | logline(c, line + (line[0] == '.')); | |
604 | } else | |
605 | complete(c); | |
606 | break; | |
607 | default: | |
608 | assert(!"wrong state for location"); | |
609 | break; | |
610 | } | |
611 | } | |
612 | ||
613 | /* Called when an operation completes */ | |
614 | static void complete(disorder_eclient *c) { | |
615 | struct operation *op; | |
616 | ||
617 | D(("complete")); | |
618 | /* Pop the operation off the queue */ | |
619 | op = c->ops; | |
620 | c->ops = op->next; | |
621 | if(c->opstail == &op->next) | |
622 | c->opstail = &c->ops; | |
623 | /* If we've pipelined a command ahead then we go straight to cmdresponser. | |
624 | * Otherwise we go to idle, which will arrange further sends. */ | |
625 | c->state = c->ops && c->ops->sent ? state_cmdresponse : state_idle; | |
626 | op->opcallback(c, op); | |
627 | /* Note that we always call the opcallback even on error, though command | |
628 | * opcallbacks generally always do the same error handling, i.e. just call | |
629 | * protocol_error(). It's the auth* opcallbacks that have different | |
630 | * behaviour. */ | |
631 | } | |
632 | ||
633 | /* Operation setup ***********************************************************/ | |
634 | ||
635 | static void stash_command_vector(disorder_eclient *c, | |
636 | int queuejump, | |
637 | operation_callback *opcallback, | |
638 | void (*completed)(), | |
639 | void *v, | |
640 | int ncmd, | |
641 | char **cmd) { | |
642 | struct operation *op = xmalloc(sizeof *op); | |
643 | struct dynstr d; | |
644 | int n; | |
645 | ||
646 | if(cmd) { | |
647 | dynstr_init(&d); | |
648 | for(n = 0; n < ncmd; ++n) { | |
649 | if(n) | |
650 | dynstr_append(&d, ' '); | |
651 | dynstr_append_string(&d, quoteutf8(cmd[n])); | |
652 | } | |
653 | dynstr_append(&d, '\n'); | |
654 | dynstr_terminate(&d); | |
655 | op->cmd = d.vec; | |
656 | } else | |
657 | op->cmd = 0; /* usually, awaiting challenge */ | |
658 | op->opcallback = opcallback; | |
659 | op->completed = completed; | |
660 | op->v = v; | |
661 | op->next = 0; | |
662 | op->client = c; | |
663 | assert(op->sent == 0); | |
664 | if(queuejump) { | |
665 | /* Authentication operations jump the queue of useful commands */ | |
666 | op->next = c->ops; | |
667 | c->ops = op; | |
668 | if(c->opstail == &c->ops) | |
669 | c->opstail = &op->next; | |
670 | for(op = c->ops; op; op = op->next) | |
671 | assert(!op->sent); | |
672 | } else { | |
673 | *c->opstail = op; | |
674 | c->opstail = &op->next; | |
675 | } | |
676 | } | |
677 | ||
678 | static void vstash_command(disorder_eclient *c, | |
679 | int queuejump, | |
680 | operation_callback *opcallback, | |
681 | void (*completed)(), | |
682 | void *v, | |
683 | const char *cmd, va_list ap) { | |
684 | char *arg; | |
685 | struct vector vec; | |
686 | ||
687 | D(("vstash_command %s", cmd ? cmd : "NULL")); | |
688 | if(cmd) { | |
689 | vector_init(&vec); | |
690 | vector_append(&vec, (char *)cmd); | |
691 | while((arg = va_arg(ap, char *))) | |
692 | vector_append(&vec, arg); | |
693 | stash_command_vector(c, queuejump, opcallback, completed, v, | |
694 | vec.nvec, vec.vec); | |
695 | } else | |
696 | stash_command_vector(c, queuejump, opcallback, completed, v, 0, 0); | |
697 | } | |
698 | ||
699 | static void stash_command(disorder_eclient *c, | |
700 | int queuejump, | |
701 | operation_callback *opcallback, | |
702 | void (*completed)(), | |
703 | void *v, | |
704 | const char *cmd, | |
705 | ...) { | |
706 | va_list ap; | |
707 | ||
708 | va_start(ap, cmd); | |
709 | vstash_command(c, queuejump, opcallback, completed, v, cmd, ap); | |
710 | va_end(ap); | |
711 | } | |
712 | ||
713 | /* Command support ***********************************************************/ | |
714 | ||
715 | /* for commands with a simple string response */ | |
716 | static void string_response_opcallback(disorder_eclient *c, | |
717 | struct operation *op) { | |
718 | D(("string_response_callback")); | |
719 | if(c->rc / 100 == 2) { | |
720 | if(op->completed) | |
721 | ((disorder_eclient_string_response *)op->completed)(op->v, c->line + 4); | |
722 | } else | |
723 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
724 | } | |
725 | ||
726 | /* for commands with a simple integer response */ | |
727 | static void integer_response_opcallback(disorder_eclient *c, | |
728 | struct operation *op) { | |
729 | D(("string_response_callback")); | |
730 | if(c->rc / 100 == 2) { | |
731 | if(op->completed) | |
732 | ((disorder_eclient_integer_response *)op->completed) | |
733 | (op->v, strtol(c->line + 4, 0, 10)); | |
734 | } else | |
735 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
736 | } | |
737 | ||
738 | /* for commands with no response */ | |
739 | static void no_response_opcallback(disorder_eclient *c, | |
740 | struct operation *op) { | |
741 | D(("no_response_callback")); | |
742 | if(c->rc / 100 == 2) { | |
743 | if(op->completed) | |
744 | ((disorder_eclient_no_response *)op->completed)(op->v); | |
745 | } else | |
746 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
747 | } | |
748 | ||
749 | /* error callback for queue_unmarshall */ | |
750 | static void eclient_queue_error(const char *msg, | |
751 | void *u) { | |
752 | struct operation *op = u; | |
753 | ||
754 | protocol_error(op->client, op, -1, "error parsing queue entry: %s", msg); | |
755 | } | |
756 | ||
757 | /* for commands that expect a queue dump */ | |
758 | static void queue_response_opcallback(disorder_eclient *c, | |
759 | struct operation *op) { | |
760 | int n; | |
761 | struct queue_entry *q, *qh = 0, **qtail = &qh, *qlast = 0; | |
762 | ||
763 | D(("queue_response_callback")); | |
764 | if(c->rc / 100 == 2) { | |
765 | /* parse the queue */ | |
766 | for(n = 0; n < c->vec.nvec; ++n) { | |
767 | q = xmalloc(sizeof *q); | |
768 | D(("queue_unmarshall %s", c->vec.vec[n])); | |
769 | if(!queue_unmarshall(q, c->vec.vec[n], eclient_queue_error, op)) { | |
770 | q->prev = qlast; | |
771 | *qtail = q; | |
772 | qtail = &q->next; | |
773 | qlast = q; | |
774 | } | |
775 | } | |
776 | if(op->completed) | |
777 | ((disorder_eclient_queue_response *)op->completed)(op->v, qh); | |
778 | } else | |
779 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
780 | } | |
781 | ||
782 | /* for 'playing' */ | |
783 | static void playing_response_opcallback(disorder_eclient *c, | |
784 | struct operation *op) { | |
785 | struct queue_entry *q; | |
786 | ||
787 | D(("playing_response_callback")); | |
788 | if(c->rc / 100 == 2) { | |
789 | switch(c->rc % 10) { | |
790 | case 2: | |
791 | if(queue_unmarshall(q = xmalloc(sizeof *q), c->line + 4, | |
792 | eclient_queue_error, c)) | |
793 | return; | |
794 | break; | |
795 | case 9: | |
796 | q = 0; | |
797 | break; | |
798 | default: | |
799 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
800 | return; | |
801 | } | |
802 | if(op->completed) | |
803 | ((disorder_eclient_queue_response *)op->completed)(op->v, q); | |
804 | } else | |
805 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
806 | } | |
807 | ||
808 | /* for commands that expect a list of some sort */ | |
809 | static void list_response_opcallback(disorder_eclient *c, | |
810 | struct operation *op) { | |
811 | D(("list_response_callback")); | |
812 | if(c->rc / 100 == 2) { | |
813 | if(op->completed) | |
814 | ((disorder_eclient_list_response *)op->completed)(op->v, | |
815 | c->vec.nvec, | |
816 | c->vec.vec); | |
817 | } else | |
818 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
819 | } | |
820 | ||
821 | /* for volume */ | |
822 | static void volume_response_opcallback(disorder_eclient *c, | |
823 | struct operation *op) { | |
824 | int l, r; | |
825 | ||
826 | D(("volume_response_callback")); | |
827 | if(c->rc / 100 == 2) { | |
828 | if(op->completed) { | |
829 | if(sscanf(c->line + 4, "%d %d", &l, &r) != 2 || l < 0 || r < 0) | |
830 | protocol_error(c, op, -1, "%s: invalid volume response: %s", | |
831 | c->ident, c->line); | |
832 | else | |
833 | ((disorder_eclient_volume_response *)op->completed)(op->v, l, r); | |
834 | } | |
835 | } else | |
836 | protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line); | |
837 | } | |
838 | ||
839 | static int simple(disorder_eclient *c, | |
840 | operation_callback *opcallback, | |
841 | void (*completed)(), | |
842 | void *v, | |
843 | const char *cmd, ...) { | |
844 | va_list ap; | |
845 | ||
846 | va_start(ap, cmd); | |
847 | vstash_command(c, 0/*queuejump*/, opcallback, completed, v, cmd, ap); | |
848 | va_end(ap); | |
849 | /* Give the state machine a kick, since we might be in state_idle */ | |
850 | disorder_eclient_polled(c, 0); | |
851 | return 0; | |
852 | } | |
853 | ||
854 | /* Commands ******************************************************************/ | |
855 | ||
856 | int disorder_eclient_version(disorder_eclient *c, | |
857 | disorder_eclient_string_response *completed, | |
858 | void *v) { | |
859 | return simple(c, string_response_opcallback, (void (*)())completed, v, | |
860 | "version", (char *)0); | |
861 | } | |
862 | ||
863 | int disorder_eclient_namepart(disorder_eclient *c, | |
864 | disorder_eclient_string_response *completed, | |
865 | const char *track, | |
866 | const char *context, | |
867 | const char *part, | |
868 | void *v) { | |
869 | return simple(c, string_response_opcallback, (void (*)())completed, v, | |
870 | "part", track, context, part, (char *)0); | |
871 | } | |
872 | ||
873 | int disorder_eclient_play(disorder_eclient *c, | |
874 | const char *track, | |
875 | disorder_eclient_no_response *completed, | |
876 | void *v) { | |
877 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
878 | "play", track, (char *)0); | |
879 | } | |
880 | ||
881 | int disorder_eclient_pause(disorder_eclient *c, | |
882 | disorder_eclient_no_response *completed, | |
883 | void *v) { | |
884 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
885 | "pause", (char *)0); | |
886 | } | |
887 | ||
888 | int disorder_eclient_resume(disorder_eclient *c, | |
889 | disorder_eclient_no_response *completed, | |
890 | void *v) { | |
891 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
892 | "resume", (char *)0); | |
893 | } | |
894 | ||
895 | int disorder_eclient_scratch(disorder_eclient *c, | |
896 | const char *id, | |
897 | disorder_eclient_no_response *completed, | |
898 | void *v) { | |
899 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
900 | "scratch", id, (char *)0); | |
901 | } | |
902 | ||
903 | int disorder_eclient_scratch_playing(disorder_eclient *c, | |
904 | disorder_eclient_no_response *completed, | |
905 | void *v) { | |
906 | return disorder_eclient_scratch(c, 0, completed, v); | |
907 | } | |
908 | ||
909 | int disorder_eclient_remove(disorder_eclient *c, | |
910 | const char *id, | |
911 | disorder_eclient_no_response *completed, | |
912 | void *v) { | |
913 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
914 | "remove", id, (char *)0); | |
915 | } | |
916 | ||
917 | int disorder_eclient_moveafter(disorder_eclient *c, | |
918 | const char *target, | |
919 | int nids, | |
920 | const char **ids, | |
921 | disorder_eclient_no_response *completed, | |
922 | void *v) { | |
923 | struct vector vec; | |
924 | int n; | |
925 | ||
926 | vector_init(&vec); | |
927 | vector_append(&vec, (char *)"moveafter"); | |
928 | vector_append(&vec, (char *)target); | |
929 | for(n = 0; n < nids; ++n) | |
930 | vector_append(&vec, (char *)ids[n]); | |
931 | stash_command_vector(c, 0/*queuejump*/, no_response_opcallback, completed, v, | |
932 | vec.nvec, vec.vec); | |
933 | disorder_eclient_polled(c, 0); | |
934 | return 0; | |
935 | } | |
936 | ||
937 | int disorder_eclient_recent(disorder_eclient *c, | |
938 | disorder_eclient_queue_response *completed, | |
939 | void *v) { | |
940 | return simple(c, queue_response_opcallback, (void (*)())completed, v, | |
941 | "recent", (char *)0); | |
942 | } | |
943 | ||
944 | int disorder_eclient_queue(disorder_eclient *c, | |
945 | disorder_eclient_queue_response *completed, | |
946 | void *v) { | |
947 | return simple(c, queue_response_opcallback, (void (*)())completed, v, | |
948 | "queue", (char *)0); | |
949 | } | |
950 | ||
951 | int disorder_eclient_files(disorder_eclient *c, | |
952 | disorder_eclient_list_response *completed, | |
953 | const char *dir, | |
954 | const char *re, | |
955 | void *v) { | |
956 | return simple(c, list_response_opcallback, (void (*)())completed, v, | |
957 | "files", dir, re, (char *)0); | |
958 | } | |
959 | ||
960 | int disorder_eclient_dirs(disorder_eclient *c, | |
961 | disorder_eclient_list_response *completed, | |
962 | const char *dir, | |
963 | const char *re, | |
964 | void *v) { | |
965 | return simple(c, list_response_opcallback, (void (*)())completed, v, | |
966 | "dirs", dir, re, (char *)0); | |
967 | } | |
968 | ||
969 | int disorder_eclient_playing(disorder_eclient *c, | |
970 | disorder_eclient_queue_response *completed, | |
971 | void *v) { | |
972 | return simple(c, playing_response_opcallback, (void (*)())completed, v, | |
973 | "playing", (char *)0); | |
974 | } | |
975 | ||
976 | int disorder_eclient_length(disorder_eclient *c, | |
977 | disorder_eclient_integer_response *completed, | |
978 | const char *track, | |
979 | void *v) { | |
980 | return simple(c, integer_response_opcallback, (void (*)())completed, v, | |
981 | "length", track, (char *)0); | |
982 | } | |
983 | ||
984 | int disorder_eclient_volume(disorder_eclient *c, | |
985 | disorder_eclient_volume_response *completed, | |
986 | int l, int r, | |
987 | void *v) { | |
988 | char sl[64], sr[64]; | |
989 | ||
990 | if(l < 0 && r < 0) { | |
991 | return simple(c, volume_response_opcallback, (void (*)())completed, v, | |
992 | "volume", (char *)0); | |
993 | } else if(l >= 0 && r >= 0) { | |
994 | assert(l <= 100); | |
995 | assert(r <= 100); | |
996 | byte_snprintf(sl, sizeof sl, "%d", l); | |
997 | byte_snprintf(sr, sizeof sr, "%d", r); | |
998 | return simple(c, volume_response_opcallback, (void (*)())completed, v, | |
999 | "volume", sl, sr, (char *)0); | |
1000 | } else { | |
1001 | assert(!"invalid arguments to disorder_eclient_volume"); | |
1002 | return -1; /* gcc is being dim */ | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | int disorder_eclient_enable(disorder_eclient *c, | |
1007 | disorder_eclient_no_response *completed, | |
1008 | void *v) { | |
1009 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
1010 | "enable", (char *)0); | |
1011 | } | |
1012 | ||
1013 | int disorder_eclient_disable(disorder_eclient *c, | |
1014 | disorder_eclient_no_response *completed, | |
1015 | void *v){ | |
1016 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
1017 | "disable", (char *)0); | |
1018 | } | |
1019 | ||
1020 | int disorder_eclient_random_enable(disorder_eclient *c, | |
1021 | disorder_eclient_no_response *completed, | |
1022 | void *v){ | |
1023 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
1024 | "random-enable", (char *)0); | |
1025 | } | |
1026 | ||
1027 | int disorder_eclient_random_disable(disorder_eclient *c, | |
1028 | disorder_eclient_no_response *completed, | |
1029 | void *v){ | |
1030 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
1031 | "random-disable", (char *)0); | |
1032 | } | |
1033 | ||
1034 | int disorder_eclient_get(disorder_eclient *c, | |
1035 | disorder_eclient_string_response *completed, | |
1036 | const char *track, const char *pref, | |
1037 | void *v) { | |
1038 | return simple(c, string_response_opcallback, (void (*)())completed, v, | |
1039 | "get", track, pref, (char *)0); | |
1040 | } | |
1041 | ||
1042 | int disorder_eclient_set(disorder_eclient *c, | |
1043 | disorder_eclient_no_response *completed, | |
1044 | const char *track, const char *pref, | |
1045 | const char *value, | |
1046 | void *v) { | |
1047 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
1048 | "set", track, pref, value, (char *)0); | |
1049 | } | |
1050 | ||
1051 | int disorder_eclient_unset(disorder_eclient *c, | |
1052 | disorder_eclient_no_response *completed, | |
1053 | const char *track, const char *pref, | |
1054 | void *v) { | |
1055 | return simple(c, no_response_opcallback, (void (*)())completed, v, | |
1056 | "unset", track, pref, (char *)0); | |
1057 | } | |
1058 | ||
1059 | int disorder_eclient_resolve(disorder_eclient *c, | |
1060 | disorder_eclient_string_response *completed, | |
1061 | const char *track, | |
1062 | void *v) { | |
1063 | return simple(c, string_response_opcallback, (void (*)())completed, v, | |
1064 | "resolve", track, (char *)0); | |
1065 | } | |
1066 | ||
1067 | int disorder_eclient_search(disorder_eclient *c, | |
1068 | disorder_eclient_list_response *completed, | |
1069 | const char *terms, | |
1070 | void *v) { | |
1071 | if(!split(terms, 0, SPLIT_QUOTES, 0, 0)) return -1; | |
1072 | return simple(c, list_response_opcallback, (void (*)())completed, v, | |
1073 | "search", terms, (char *)0); | |
1074 | } | |
1075 | ||
1076 | /* Log clients ***************************************************************/ | |
1077 | ||
1078 | int disorder_eclient_log(disorder_eclient *c, | |
1079 | const disorder_eclient_log_callbacks *callbacks, | |
1080 | void *v) { | |
1081 | if(c->log_callbacks) return -1; | |
1082 | c->log_callbacks = callbacks; | |
1083 | c->log_v = v; | |
1084 | stash_command(c, 0/*queuejump*/, log_opcallback, 0/*completed*/, v, | |
1085 | "log", (char *)0); | |
1086 | return 0; | |
1087 | } | |
1088 | ||
1089 | /* If we get here we've stopped being a log client */ | |
1090 | static void log_opcallback(disorder_eclient *c, | |
1091 | struct operation attribute((unused)) *op) { | |
1092 | D(("log_opcallback")); | |
1093 | c->log_callbacks = 0; | |
1094 | c->log_v = 0; | |
1095 | } | |
1096 | ||
1097 | /* error callback for log line parsing */ | |
1098 | static void logline_error(const char *msg, void *u) { | |
1099 | disorder_eclient *c = u; | |
1100 | protocol_error(c, c->ops, -1, "error parsing log line: %s", msg); | |
1101 | } | |
1102 | ||
1103 | /* process a single log line */ | |
1104 | static void logline(disorder_eclient *c, const char *line) { | |
1105 | int nvec, n; | |
1106 | char **vec; | |
1107 | uintmax_t when; | |
1108 | ||
1109 | D(("log_opcallback [%s]", line)); | |
1110 | vec = split(line, &nvec, SPLIT_QUOTES, logline_error, c); | |
1111 | if(nvec < 2) return; /* probably an error, already | |
1112 | * reported */ | |
1113 | if(sscanf(vec[0], "%"SCNxMAX, &when) != 1) { | |
1114 | /* probably the wrong side of a format change */ | |
1115 | protocol_error(c, c->ops, -1, "invalid log timestamp '%s'", vec[0]); | |
1116 | return; | |
1117 | } | |
1118 | /* TODO: do something with the time */ | |
1119 | n = TABLE_FIND(logentry_handlers, struct logentry_handler, name, vec[1]); | |
1120 | if(n < 0) return; /* probably a future command */ | |
1121 | vec += 2; | |
1122 | nvec -= 2; | |
1123 | if(nvec < logentry_handlers[n].min || nvec > logentry_handlers[n].max) | |
1124 | return; | |
1125 | logentry_handlers[n].handler(c, nvec, vec); | |
1126 | } | |
1127 | ||
1128 | static void logentry_completed(disorder_eclient *c, | |
1129 | int attribute((unused)) nvec, char **vec) { | |
1130 | if(!c->log_callbacks->completed) return; | |
1131 | c->log_callbacks->completed(c->log_v, vec[0]); | |
1132 | } | |
1133 | ||
1134 | static void logentry_failed(disorder_eclient *c, | |
1135 | int attribute((unused)) nvec, char **vec) { | |
1136 | if(!c->log_callbacks->failed)return; | |
1137 | c->log_callbacks->failed(c->log_v, vec[0], vec[1]); | |
1138 | } | |
1139 | ||
1140 | static void logentry_moved(disorder_eclient *c, | |
1141 | int attribute((unused)) nvec, char **vec) { | |
1142 | if(!c->log_callbacks->moved) return; | |
1143 | c->log_callbacks->moved(c->log_v, vec[0]); | |
1144 | } | |
1145 | ||
1146 | static void logentry_playing(disorder_eclient *c, | |
1147 | int attribute((unused)) nvec, char **vec) { | |
1148 | if(!c->log_callbacks->playing) return; | |
1149 | c->log_callbacks->playing(c->log_v, vec[0], vec[1]); | |
1150 | } | |
1151 | ||
1152 | static void logentry_queue(disorder_eclient *c, | |
1153 | int attribute((unused)) nvec, char **vec) { | |
1154 | struct queue_entry *q; | |
1155 | ||
1156 | if(!c->log_callbacks->completed) return; | |
1157 | q = xmalloc(sizeof *q); | |
1158 | if(queue_unmarshall_vec(q, nvec, vec, eclient_queue_error, c)) | |
1159 | return; /* bogus */ | |
1160 | c->log_callbacks->queue(c->log_v, q); | |
1161 | } | |
1162 | ||
1163 | static void logentry_recent_added(disorder_eclient *c, | |
1164 | int attribute((unused)) nvec, char **vec) { | |
1165 | struct queue_entry *q; | |
1166 | ||
1167 | if(!c->log_callbacks->recent_added) return; | |
1168 | q = xmalloc(sizeof *q); | |
1169 | if(queue_unmarshall_vec(q, nvec, vec, eclient_queue_error, c)) | |
1170 | return; /* bogus */ | |
1171 | c->log_callbacks->recent_added(c->log_v, q); | |
1172 | } | |
1173 | ||
1174 | static void logentry_recent_removed(disorder_eclient *c, | |
1175 | int attribute((unused)) nvec, char **vec) { | |
1176 | if(!c->log_callbacks->recent_removed) return; | |
1177 | c->log_callbacks->recent_removed(c->log_v, vec[0]); | |
1178 | } | |
1179 | ||
1180 | static void logentry_removed(disorder_eclient *c, | |
1181 | int attribute((unused)) nvec, char **vec) { | |
1182 | if(!c->log_callbacks->removed) return; | |
1183 | c->log_callbacks->removed(c->log_v, vec[0], vec[1]); | |
1184 | } | |
1185 | ||
1186 | static void logentry_scratched(disorder_eclient *c, | |
1187 | int attribute((unused)) nvec, char **vec) { | |
1188 | if(!c->log_callbacks->scratched) return; | |
1189 | c->log_callbacks->scratched(c->log_v, vec[0], vec[1]); | |
1190 | } | |
1191 | ||
1192 | static const struct { | |
1193 | unsigned long bit; | |
1194 | const char *enable; | |
1195 | const char *disable; | |
1196 | } statestrings[] = { | |
1197 | { DISORDER_PLAYING_ENABLED, "enable_play", "disable_play" }, | |
1198 | { DISORDER_RANDOM_ENABLED, "enable_random", "disable_random" }, | |
1199 | { DISORDER_TRACK_PAUSED, "pause", "resume" }, | |
1200 | }; | |
1201 | #define NSTATES (int)(sizeof states / sizeof *states) | |
1202 | ||
1203 | static void logentry_state(disorder_eclient *c, | |
1204 | int attribute((unused)) nvec, char **vec) { | |
1205 | int n; | |
1206 | ||
1207 | for(n = 0; n < NSTATES; ++n) | |
1208 | if(!strcmp(vec[0], statestrings[n].enable)) { | |
1209 | c->statebits |= statestrings[n].bit; | |
1210 | break; | |
1211 | } else if(!strcmp(vec[0], statestrings[n].disable)) { | |
1212 | c->statebits &= ~statestrings[n].bit; | |
1213 | break; | |
1214 | } | |
1215 | if(!c->log_callbacks->state) return; | |
1216 | c->log_callbacks->state(c->log_v, c->statebits); | |
1217 | } | |
1218 | ||
1219 | static void logentry_volume(disorder_eclient *c, | |
1220 | int attribute((unused)) nvec, char **vec) { | |
1221 | long l, r; | |
1222 | ||
1223 | if(!c->log_callbacks->volume) return; | |
1224 | if(xstrtol(&l, vec[0], 0, 10) | |
1225 | || xstrtol(&r, vec[1], 0, 10) | |
1226 | || l < 0 || l > INT_MAX | |
1227 | || r < 0 || r > INT_MAX) | |
1228 | return; /* bogus */ | |
1229 | c->log_callbacks->volume(c->log_v, (int)l, (int)r); | |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | Local Variables: | |
1234 | c-basic-offset:2 | |
1235 | comment-column:40 | |
1236 | fill-column:79 | |
1237 | indent-tabs-mode:nil | |
1238 | End: | |
1239 | */ |