2 * This file is part of DisOrder.
3 * Copyright (C) 2006 Richard Kettlewell
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.
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.
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
24 #include <sys/types.h>
25 #include <sys/socket.h>
26 #include <netinet/in.h>
40 #include "configuration.h"
47 #include "inputline.h"
54 #include "client-common.h"
56 /* TODO: more commands */
58 /* Types *********************************************************************/
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 */
70 static const char *const states[] = {
80 struct operation; /* forward decl */
82 typedef void operation_callback(disorder_eclient *c, struct operation *op);
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. */
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 */
97 struct disorder_eclient {
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;
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;
117 unsigned long statebits; /* current state */
120 /* Forward declarations ******************************************************/
122 static int start_connect(void *cc,
123 const struct sockaddr *sa,
126 static void process_line(disorder_eclient *c, char *line);
127 static int start_connect(void *cc,
128 const struct sockaddr *sa,
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,
142 operation_callback *opcallback,
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);
161 /* Tables ********************************************************************/
163 static const struct logentry_handler {
166 void (*handler)(disorder_eclient *c,
169 } logentry_handlers[] = {
170 #define LE(X, MIN, MAX) { #X, MIN, MAX, logentry_##X }
175 LE(queue, 2, INT_MAX),
176 LE(recent_added, 2, INT_MAX),
177 LE(recent_removed, 1, 1),
184 /* Setup and teardown ********************************************************/
186 disorder_eclient *disorder_eclient_new(const disorder_eclient_callbacks *cb,
188 disorder_eclient *c = xmalloc(sizeof *c);
189 D(("disorder_eclient_new"));
193 c->opstail = &c->ops;
194 vector_init(&c->vec);
195 dynstr_init(&c->input);
196 dynstr_init(&c->output);
200 void disorder_eclient_close(disorder_eclient *c) {
201 struct operation *op;
203 D(("disorder_eclient_close"));
205 D(("disorder_eclient_close closing fd %d", c->fd));
206 c->callbacks->poll(c->u, c, c->fd, 0);
209 c->state = state_disconnected;
214 c->authenticated = 0;
215 /* We'll need to resend all operations */
216 for(op = c->ops; op; op = op->next)
220 /* Error reporting ***********************************************************/
222 /* called when a connection error occurs */
223 static int comms_error(disorder_eclient *c, const char *fmt, ...) {
229 byte_xvasprintf(&s, fmt, ap);
231 disorder_eclient_close(c);
232 c->callbacks->comms_error(c->u, s);
236 /* called when the server reports an error */
237 static int protocol_error(disorder_eclient *c, struct operation *op,
238 int code, const char *fmt, ...) {
242 D(("protocol_error"));
244 byte_xvasprintf(&s, fmt, ap);
246 c->callbacks->protocol_error(c->u, op->v, code, s);
250 /* State machine *************************************************************/
252 void disorder_eclient_polled(disorder_eclient *c, unsigned mode) {
253 struct operation *op;
255 D(("disorder_eclient_polled fd=%d state=%s mode=[%s %s]",
256 c->fd, states[c->state],
257 mode & DISORDER_POLL_READ ? "READ" : "",
258 mode & DISORDER_POLL_WRITE ? "WRITE" : ""));
259 /* The pattern here is to check each possible state in turn and try to
260 * advance (though on error we might go back). If we advance we leave open
261 * the possibility of falling through to the next state, but we set the mode
262 * bits to 0, to avoid false positives (which matter more in some cases than
265 if(c->state == state_disconnected) {
266 D(("state_disconnected"));
267 with_sockaddr(c, start_connect);
268 /* might now be state_disconnected (on error), state_connecting (slow
269 * connect) or state_connected (fast connect). If state_disconnected then
270 * we just rely on a periodic callback from the event loop sometime. */
274 if(c->state == state_connecting && mode) {
275 D(("state_connecting"));
277 /* Might be state_disconnected (on error) or state_connected (on success).
278 * In the former case we rely on the event loop for a periodic callback to
283 if(c->state == state_connected) {
284 D(("state_connected"));
285 /* We just connected. Initiate the authentication protocol. */
286 stash_command(c, 1/*queuejump*/, authbanner_opcallback,
287 0/*completed*/, 0/*v*/, 0/*cmd*/);
288 /* We never stay is state_connected very long. We could in principle jump
289 * straight to state_cmdresponse since there's actually no command to
290 * send, but that would arguably be cheating. */
291 c->state = state_idle;
294 if(c->state == state_idle) {
296 /* We are connected, and have finished any command we set off, look for
300 if(c->authenticated) {
301 /* Transmit all unsent operations */
302 for(op = c->ops; op; op = op->next) {
304 put(c, op->cmd, strlen(op->cmd));
309 /* Just send the head operation */
310 if(c->ops->cmd && !c->ops->sent) {
311 put(c, c->ops->cmd, strlen(c->ops->cmd));
315 /* Awaiting response for the operation at the head of the list */
316 c->state = state_cmdresponse;
319 c->callbacks->report(c->u, 0);
322 if(c->state == state_cmdresponse
323 || c->state == state_body
324 || c->state == state_log) {
325 D(("state_%s", states[c->state]));
326 /* We are awaiting a response */
327 if(mode & DISORDER_POLL_WRITE) send_output(c);
328 if(mode & DISORDER_POLL_READ) read_input(c);
329 /* There are a couple of reasons we might want to re-enter the state
330 * machine from the top. state_idle is obvious: there may be further
331 * commands to process. Re-entering on state_disconnected means that we
332 * immediately retry connection if a comms error occurs during a command.
333 * This is different to the case where a connection fails, where we await a
334 * spontaneous call to initiate the retry. */
336 case state_disconnected: /* lost connection */
337 case state_idle: /* completed a command */
339 disorder_eclient_polled(c, 0);
346 /* Figure out what to set the mode to */
348 case state_disconnected:
349 D(("state_disconnected (2)"));
350 /* Probably an error occurred. Await a retry. */
353 case state_connecting:
354 D(("state_connecting (2)"));
355 /* Waiting for connect to complete */
356 mode = DISORDER_POLL_READ|DISORDER_POLL_WRITE;
358 case state_connected:
359 D(("state_connected (2)"));
360 assert(!"should never be in state_connected here");
363 D(("state_idle (2)"));
364 /* Connected but nothing to do. */
367 case state_cmdresponse:
370 D(("state_%s (2)", states[c->state]));
371 /* Gathering a response. Wait for input. */
372 mode = DISORDER_POLL_READ;
373 /* Flush any pending output. */
374 if(c->output.nvec) mode |= DISORDER_POLL_WRITE;
377 D(("fd=%d new mode [%s %s]",
379 mode & DISORDER_POLL_READ ? "READ" : "",
380 mode & DISORDER_POLL_WRITE ? "WRITE" : ""));
381 if(c->fd != -1) c->callbacks->poll(c->u, c, c->fd, mode);
384 /* Called to start connecting */
385 static int start_connect(void *cc,
386 const struct sockaddr *sa,
389 disorder_eclient *c = cc;
391 D(("start_connect"));
392 c->ident = xstrdup(ident);
397 if((c->fd = socket(sa->sa_family, SOCK_STREAM, 0)) < 0)
398 return comms_error(c, "socket: %s", strerror(errno));
401 if(connect(c->fd, sa, len) < 0) {
405 c->state = state_connecting;
406 /* We are called from _polled so the state machine will get to do its
410 /* Signal the error to the caller. */
411 return comms_error(c, "connecting to %s: %s", ident, strerror(errno));
414 c->state = state_connected;
418 /* Called when maybe connected */
419 static void maybe_connected(disorder_eclient *c) {
420 /* We either connected, or got an error. */
422 socklen_t len = sizeof err;
424 D(("maybe_connected"));
425 /* Work around over-enthusiastic error slippage */
426 if(getsockopt(c->fd, SOL_SOCKET, SO_ERROR, &err, &len) < 0)
429 /* The connection failed */
430 comms_error(c, "connecting to %s: %s", c->ident, strerror(err));
431 /* sets state_disconnected */
433 /* The connection succeeded */
434 c->state = state_connected;
438 /* Authentication ************************************************************/
440 static void authbanner_opcallback(disorder_eclient *c,
441 struct operation *op) {
443 const unsigned char *nonce;
446 D(("authbanner_opcallback"));
447 if(c->rc / 100 != 2) {
448 /* Banner told us to go away. We cannot proceed. */
449 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
450 disorder_eclient_close(c);
453 nonce = unhex(c->line + 4, &nonce_len);
454 res = authhash(nonce, nonce_len, config->password);
455 stash_command(c, 1/*queuejump*/, authuser_opcallback, 0/*completed*/, 0/*v*/,
456 "user", quoteutf8(config->username), quoteutf8(res),
460 static void authuser_opcallback(disorder_eclient *c,
461 struct operation *op) {
462 D(("authuser_opcallback"));
463 if(c->rc / 100 != 2) {
464 /* Wrong password or something. We cannot proceed. */
465 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
466 disorder_eclient_close(c);
469 /* OK, we're authenticated now. */
470 c->authenticated = 1;
471 if(c->log_callbacks && !(c->ops && c->ops->opcallback == log_opcallback))
472 /* We are a log client, switch to logging mode */
473 stash_command(c, 0/*queuejump*/, log_opcallback, 0/*completed*/, c->log_v,
477 /* Output ********************************************************************/
479 /* Chop N bytes off the front of a dynstr */
480 static void consume(struct dynstr *d, int n) {
481 D(("consume %d", n));
482 assert(d->nvec >= n);
483 memmove(d->vec, d->vec + n, d->nvec - n);
487 /* Write some bytes */
488 static void put(disorder_eclient *c, const char *s, size_t n) {
489 D(("put %d %.*s", c->fd, (int)n, s));
490 dynstr_append_bytes(&c->output, s, n);
493 /* Called when we can write to our FD, or at any other time */
494 static void send_output(disorder_eclient *c) {
497 D(("send_output %d bytes pending", c->output.nvec));
498 if(c->state > state_connecting && c->output.nvec) {
499 n = write(c->fd, c->output.vec, c->output.nvec);
506 comms_error(c, "writing to %s: %s", c->ident, strerror(errno));
510 consume(&c->output, n);
514 /* Input *********************************************************************/
516 /* Called when c->fd might be readable, or at any other time */
517 static void read_input(disorder_eclient *c) {
522 D(("read_input in state %s", states[c->state]));
523 if(c->state <= state_connected) return; /* ignore bogus calls */
524 /* read some more input */
525 n = read(c->fd, buffer, sizeof buffer);
532 comms_error(c, "reading from %s: %s", c->ident, strerror(errno));
535 return; /* no new input to process */
537 D(("read %d bytes: [%.*s]", n, n, buffer));
538 dynstr_append_bytes(&c->input, buffer, n);
541 /* might have more than one line to process */
542 while(c->state > state_connecting
543 && (nl = memchr(c->input.vec, '\n', c->input.nvec))) {
544 process_line(c, xstrndup(c->input.vec, nl - c->input.vec));
545 /* we might have disconnected along the way, which zogs the input buffer */
546 if(c->state > state_connecting)
547 consume(&c->input, (nl - c->input.vec) + 1);
550 comms_error(c, "reading from %s: server disconnected", c->ident);
551 c->authenticated = 0;
555 /* called with a line that has just been read */
556 static void process_line(disorder_eclient *c, char *line) {
557 D(("process_line %d [%s]", c->fd, line));
559 case state_cmdresponse:
560 /* This is the first line of a response */
561 if(!(line[0] >= '0' && line[0] <= '9'
562 && line[1] >= '0' && line[1] <= '9'
563 && line[2] >= '0' && line[2] <= '9'
565 fatal(0, "invalid response from server: %s", line);
566 c->rc = (line[0] * 10 + line[1]) * 10 + line[2] - 111 * '0';
570 /* We need to collect the body. */
571 c->state = state_body;
575 assert(c->log_callbacks != 0);
576 if(c->log_callbacks->connected)
577 c->log_callbacks->connected(c->log_v);
578 c->state = state_log;
581 /* We've got the whole response. Go into the idle state so the state
582 * machine knows we're done and then call the operation callback. */
588 if(strcmp(line, ".")) {
589 /* A line from the body */
590 vector_append(&c->vec, line + (line[0] == '.'));
592 /* End of the body. */
593 vector_terminate(&c->vec);
598 if(strcmp(line, ".")) {
599 logline(c, line + (line[0] == '.'));
604 assert(!"wrong state for location");
609 /* Called when an operation completes */
610 static void complete(disorder_eclient *c) {
611 struct operation *op;
614 /* Pop the operation off the queue */
617 if(c->opstail == &op->next)
618 c->opstail = &c->ops;
619 /* If we've pipelined a command ahead then we go straight to cmdresponser.
620 * Otherwise we go to idle, which will arrange further sends. */
621 c->state = c->ops && c->ops->sent ? state_cmdresponse : state_idle;
622 op->opcallback(c, op);
623 /* Note that we always call the opcallback even on error, though command
624 * opcallbacks generally always do the same error handling, i.e. just call
625 * protocol_error(). It's the auth* opcallbacks that have different
629 /* Operation setup ***********************************************************/
631 static void stash_command_vector(disorder_eclient *c,
633 operation_callback *opcallback,
638 struct operation *op = xmalloc(sizeof *op);
644 for(n = 0; n < ncmd; ++n) {
646 dynstr_append(&d, ' ');
647 dynstr_append_string(&d, quoteutf8(cmd[n]));
649 dynstr_append(&d, '\n');
650 dynstr_terminate(&d);
653 op->cmd = 0; /* usually, awaiting challenge */
654 op->opcallback = opcallback;
655 op->completed = completed;
659 assert(op->sent == 0);
661 /* Authentication operations jump the queue of useful commands */
664 if(c->opstail == &c->ops)
665 c->opstail = &op->next;
666 for(op = c->ops; op; op = op->next)
670 c->opstail = &op->next;
674 static void vstash_command(disorder_eclient *c,
676 operation_callback *opcallback,
679 const char *cmd, va_list ap) {
683 D(("vstash_command %s", cmd ? cmd : "NULL"));
686 vector_append(&vec, (char *)cmd);
687 while((arg = va_arg(ap, char *)))
688 vector_append(&vec, arg);
689 stash_command_vector(c, queuejump, opcallback, completed, v,
692 stash_command_vector(c, queuejump, opcallback, completed, v, 0, 0);
695 static void stash_command(disorder_eclient *c,
697 operation_callback *opcallback,
705 vstash_command(c, queuejump, opcallback, completed, v, cmd, ap);
709 /* Command support ***********************************************************/
711 /* for commands with a simple string response */
712 static void string_response_opcallback(disorder_eclient *c,
713 struct operation *op) {
714 D(("string_response_callback"));
715 if(c->rc / 100 == 2) {
717 ((disorder_eclient_string_response *)op->completed)(op->v, c->line + 4);
719 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
722 /* for commands with a simple integer response */
723 static void integer_response_opcallback(disorder_eclient *c,
724 struct operation *op) {
725 D(("string_response_callback"));
726 if(c->rc / 100 == 2) {
728 ((disorder_eclient_integer_response *)op->completed)
729 (op->v, strtol(c->line + 4, 0, 10));
731 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
734 /* for commands with no response */
735 static void no_response_opcallback(disorder_eclient *c,
736 struct operation *op) {
737 D(("no_response_callback"));
738 if(c->rc / 100 == 2) {
740 ((disorder_eclient_no_response *)op->completed)(op->v);
742 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
745 /* error callback for queue_unmarshall */
746 static void eclient_queue_error(const char *msg,
748 struct operation *op = u;
750 protocol_error(op->client, op, -1, "error parsing queue entry: %s", msg);
753 /* for commands that expect a queue dump */
754 static void queue_response_opcallback(disorder_eclient *c,
755 struct operation *op) {
757 struct queue_entry *q, *qh = 0, **qtail = &qh, *qlast = 0;
759 D(("queue_response_callback"));
760 if(c->rc / 100 == 2) {
761 /* parse the queue */
762 for(n = 0; n < c->vec.nvec; ++n) {
763 q = xmalloc(sizeof *q);
764 D(("queue_unmarshall %s", c->vec.vec[n]));
765 if(!queue_unmarshall(q, c->vec.vec[n], eclient_queue_error, op)) {
773 ((disorder_eclient_queue_response *)op->completed)(op->v, qh);
775 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
779 static void playing_response_opcallback(disorder_eclient *c,
780 struct operation *op) {
781 struct queue_entry *q;
783 D(("playing_response_callback"));
784 if(c->rc / 100 == 2) {
787 if(queue_unmarshall(q = xmalloc(sizeof *q), c->line + 4,
788 eclient_queue_error, c))
795 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
799 ((disorder_eclient_queue_response *)op->completed)(op->v, q);
801 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
804 /* for commands that expect a list of some sort */
805 static void list_response_opcallback(disorder_eclient *c,
806 struct operation *op) {
807 D(("list_response_callback"));
808 if(c->rc / 100 == 2) {
810 ((disorder_eclient_list_response *)op->completed)(op->v,
814 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
818 static void volume_response_opcallback(disorder_eclient *c,
819 struct operation *op) {
822 D(("volume_response_callback"));
823 if(c->rc / 100 == 2) {
825 if(sscanf(c->line + 4, "%d %d", &l, &r) != 2 || l < 0 || r < 0)
826 protocol_error(c, op, -1, "%s: invalid volume response: %s",
829 ((disorder_eclient_volume_response *)op->completed)(op->v, l, r);
832 protocol_error(c, op, c->rc, "%s: %s", c->ident, c->line);
835 static int simple(disorder_eclient *c,
836 operation_callback *opcallback,
839 const char *cmd, ...) {
843 vstash_command(c, 0/*queuejump*/, opcallback, completed, v, cmd, ap);
845 /* Give the state machine a kick, since we might be in state_idle */
846 disorder_eclient_polled(c, 0);
850 /* Commands ******************************************************************/
852 int disorder_eclient_version(disorder_eclient *c,
853 disorder_eclient_string_response *completed,
855 return simple(c, string_response_opcallback, (void (*)())completed, v,
856 "version", (char *)0);
859 int disorder_eclient_namepart(disorder_eclient *c,
860 disorder_eclient_string_response *completed,
865 return simple(c, string_response_opcallback, (void (*)())completed, v,
866 "part", track, context, part, (char *)0);
869 int disorder_eclient_play(disorder_eclient *c,
871 disorder_eclient_no_response *completed,
873 return simple(c, no_response_opcallback, (void (*)())completed, v,
874 "play", track, (char *)0);
877 int disorder_eclient_pause(disorder_eclient *c,
878 disorder_eclient_no_response *completed,
880 return simple(c, no_response_opcallback, (void (*)())completed, v,
884 int disorder_eclient_resume(disorder_eclient *c,
885 disorder_eclient_no_response *completed,
887 return simple(c, no_response_opcallback, (void (*)())completed, v,
888 "resume", (char *)0);
891 int disorder_eclient_scratch(disorder_eclient *c,
893 disorder_eclient_no_response *completed,
895 return simple(c, no_response_opcallback, (void (*)())completed, v,
896 "scratch", id, (char *)0);
899 int disorder_eclient_scratch_playing(disorder_eclient *c,
900 disorder_eclient_no_response *completed,
902 return disorder_eclient_scratch(c, 0, completed, v);
905 int disorder_eclient_remove(disorder_eclient *c,
907 disorder_eclient_no_response *completed,
909 return simple(c, no_response_opcallback, (void (*)())completed, v,
910 "remove", id, (char *)0);
913 int disorder_eclient_moveafter(disorder_eclient *c,
917 disorder_eclient_no_response *completed,
923 vector_append(&vec, (char *)"moveafter");
924 vector_append(&vec, (char *)target);
925 for(n = 0; n < nids; ++n)
926 vector_append(&vec, (char *)ids[n]);
927 stash_command_vector(c, 0/*queuejump*/, no_response_opcallback, completed, v,
929 disorder_eclient_polled(c, 0);
933 int disorder_eclient_recent(disorder_eclient *c,
934 disorder_eclient_queue_response *completed,
936 return simple(c, queue_response_opcallback, (void (*)())completed, v,
937 "recent", (char *)0);
940 int disorder_eclient_queue(disorder_eclient *c,
941 disorder_eclient_queue_response *completed,
943 return simple(c, queue_response_opcallback, (void (*)())completed, v,
947 int disorder_eclient_files(disorder_eclient *c,
948 disorder_eclient_list_response *completed,
952 return simple(c, list_response_opcallback, (void (*)())completed, v,
953 "files", dir, re, (char *)0);
956 int disorder_eclient_dirs(disorder_eclient *c,
957 disorder_eclient_list_response *completed,
961 return simple(c, list_response_opcallback, (void (*)())completed, v,
962 "dirs", dir, re, (char *)0);
965 int disorder_eclient_playing(disorder_eclient *c,
966 disorder_eclient_queue_response *completed,
968 return simple(c, playing_response_opcallback, (void (*)())completed, v,
969 "playing", (char *)0);
972 int disorder_eclient_length(disorder_eclient *c,
973 disorder_eclient_integer_response *completed,
976 return simple(c, integer_response_opcallback, (void (*)())completed, v,
977 "length", track, (char *)0);
980 int disorder_eclient_volume(disorder_eclient *c,
981 disorder_eclient_volume_response *completed,
987 return simple(c, volume_response_opcallback, (void (*)())completed, v,
988 "volume", (char *)0);
989 } else if(l >= 0 && r >= 0) {
992 byte_snprintf(sl, sizeof sl, "%d", l);
993 byte_snprintf(sr, sizeof sr, "%d", r);
994 return simple(c, volume_response_opcallback, (void (*)())completed, v,
995 "volume", sl, sr, (char *)0);
997 assert(!"invalid arguments to disorder_eclient_volume");
998 return -1; /* gcc is being dim */
1002 int disorder_eclient_enable(disorder_eclient *c,
1003 disorder_eclient_no_response *completed,
1005 return simple(c, no_response_opcallback, (void (*)())completed, v,
1006 "enable", (char *)0);
1009 int disorder_eclient_disable(disorder_eclient *c,
1010 disorder_eclient_no_response *completed,
1012 return simple(c, no_response_opcallback, (void (*)())completed, v,
1013 "disable", (char *)0);
1016 int disorder_eclient_random_enable(disorder_eclient *c,
1017 disorder_eclient_no_response *completed,
1019 return simple(c, no_response_opcallback, (void (*)())completed, v,
1020 "random-enable", (char *)0);
1023 int disorder_eclient_random_disable(disorder_eclient *c,
1024 disorder_eclient_no_response *completed,
1026 return simple(c, no_response_opcallback, (void (*)())completed, v,
1027 "random-disable", (char *)0);
1030 int disorder_eclient_get(disorder_eclient *c,
1031 disorder_eclient_string_response *completed,
1032 const char *track, const char *pref,
1034 return simple(c, string_response_opcallback, (void (*)())completed, v,
1035 "get", track, pref, (char *)0);
1038 int disorder_eclient_set(disorder_eclient *c,
1039 disorder_eclient_no_response *completed,
1040 const char *track, const char *pref,
1043 return simple(c, no_response_opcallback, (void (*)())completed, v,
1044 "set", track, pref, value, (char *)0);
1047 int disorder_eclient_unset(disorder_eclient *c,
1048 disorder_eclient_no_response *completed,
1049 const char *track, const char *pref,
1051 return simple(c, no_response_opcallback, (void (*)())completed, v,
1052 "unset", track, pref, (char *)0);
1055 int disorder_eclient_resolve(disorder_eclient *c,
1056 disorder_eclient_string_response *completed,
1059 return simple(c, string_response_opcallback, (void (*)())completed, v,
1060 "resolve", track, (char *)0);
1063 int disorder_eclient_search(disorder_eclient *c,
1064 disorder_eclient_list_response *completed,
1067 if(!split(terms, 0, SPLIT_QUOTES, 0, 0)) return -1;
1068 return simple(c, list_response_opcallback, (void (*)())completed, v,
1069 "search", terms, (char *)0);
1072 /* Log clients ***************************************************************/
1074 int disorder_eclient_log(disorder_eclient *c,
1075 const disorder_eclient_log_callbacks *callbacks,
1077 if(c->log_callbacks) return -1;
1078 c->log_callbacks = callbacks;
1080 stash_command(c, 0/*queuejump*/, log_opcallback, 0/*completed*/, v,
1085 /* If we get here we've stopped being a log client */
1086 static void log_opcallback(disorder_eclient *c,
1087 struct operation attribute((unused)) *op) {
1088 D(("log_opcallback"));
1089 c->log_callbacks = 0;
1093 /* error callback for log line parsing */
1094 static void logline_error(const char *msg, void *u) {
1095 disorder_eclient *c = u;
1096 protocol_error(c, c->ops, -1, "error parsing log line: %s", msg);
1099 /* process a single log line */
1100 static void logline(disorder_eclient *c, const char *line) {
1105 D(("log_opcallback [%s]", line));
1106 vec = split(line, &nvec, SPLIT_QUOTES, logline_error, c);
1107 if(nvec < 2) return; /* probably an error, already
1109 if(sscanf(vec[0], "%"SCNxMAX, &when) != 1) {
1110 /* probably the wrong side of a format change */
1111 protocol_error(c, c->ops, -1, "invalid log timestamp '%s'", vec[0]);
1114 /* TODO: do something with the time */
1115 n = TABLE_FIND(logentry_handlers, struct logentry_handler, name, vec[1]);
1116 if(n < 0) return; /* probably a future command */
1119 if(nvec < logentry_handlers[n].min || nvec > logentry_handlers[n].max)
1121 logentry_handlers[n].handler(c, nvec, vec);
1124 static void logentry_completed(disorder_eclient *c,
1125 int attribute((unused)) nvec, char **vec) {
1126 if(!c->log_callbacks->completed) return;
1127 c->log_callbacks->completed(c->log_v, vec[0]);
1130 static void logentry_failed(disorder_eclient *c,
1131 int attribute((unused)) nvec, char **vec) {
1132 if(!c->log_callbacks->failed)return;
1133 c->log_callbacks->failed(c->log_v, vec[0], vec[1]);
1136 static void logentry_moved(disorder_eclient *c,
1137 int attribute((unused)) nvec, char **vec) {
1138 if(!c->log_callbacks->moved) return;
1139 c->log_callbacks->moved(c->log_v, vec[0]);
1142 static void logentry_playing(disorder_eclient *c,
1143 int attribute((unused)) nvec, char **vec) {
1144 if(!c->log_callbacks->playing) return;
1145 c->log_callbacks->playing(c->log_v, vec[0], vec[1]);
1148 static void logentry_queue(disorder_eclient *c,
1149 int attribute((unused)) nvec, char **vec) {
1150 struct queue_entry *q;
1152 if(!c->log_callbacks->completed) return;
1153 q = xmalloc(sizeof *q);
1154 if(queue_unmarshall_vec(q, nvec, vec, eclient_queue_error, c))
1156 c->log_callbacks->queue(c->log_v, q);
1159 static void logentry_recent_added(disorder_eclient *c,
1160 int attribute((unused)) nvec, char **vec) {
1161 struct queue_entry *q;
1163 if(!c->log_callbacks->recent_added) return;
1164 q = xmalloc(sizeof *q);
1165 if(queue_unmarshall_vec(q, nvec, vec, eclient_queue_error, c))
1167 c->log_callbacks->recent_added(c->log_v, q);
1170 static void logentry_recent_removed(disorder_eclient *c,
1171 int attribute((unused)) nvec, char **vec) {
1172 if(!c->log_callbacks->recent_removed) return;
1173 c->log_callbacks->recent_removed(c->log_v, vec[0]);
1176 static void logentry_removed(disorder_eclient *c,
1177 int attribute((unused)) nvec, char **vec) {
1178 if(!c->log_callbacks->removed) return;
1179 c->log_callbacks->removed(c->log_v, vec[0], vec[1]);
1182 static void logentry_scratched(disorder_eclient *c,
1183 int attribute((unused)) nvec, char **vec) {
1184 if(!c->log_callbacks->scratched) return;
1185 c->log_callbacks->scratched(c->log_v, vec[0], vec[1]);
1188 static const struct {
1191 const char *disable;
1192 } statestrings[] = {
1193 { DISORDER_PLAYING_ENABLED, "enable_play", "disable_play" },
1194 { DISORDER_RANDOM_ENABLED, "enable_random", "disable_random" },
1195 { DISORDER_TRACK_PAUSED, "pause", "resume" },
1197 #define NSTATES (int)(sizeof states / sizeof *states)
1199 static void logentry_state(disorder_eclient *c,
1200 int attribute((unused)) nvec, char **vec) {
1203 for(n = 0; n < NSTATES; ++n)
1204 if(!strcmp(vec[0], statestrings[n].enable)) {
1205 c->statebits |= statestrings[n].bit;
1207 } else if(!strcmp(vec[0], statestrings[n].disable)) {
1208 c->statebits &= ~statestrings[n].bit;
1211 if(!c->log_callbacks->state) return;
1212 c->log_callbacks->state(c->log_v, c->statebits);
1215 static void logentry_volume(disorder_eclient *c,
1216 int attribute((unused)) nvec, char **vec) {
1219 if(!c->log_callbacks->volume) return;
1220 if(xstrtol(&l, vec[0], 0, 10)
1221 || xstrtol(&r, vec[1], 0, 10)
1222 || l < 0 || l > INT_MAX
1223 || r < 0 || r > INT_MAX)
1225 c->log_callbacks->volume(c->log_v, (int)l, (int)r);
1233 indent-tabs-mode:nil