forked from mikebrady/shairport-sync
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathdacp.c
1113 lines (1036 loc) · 44.5 KB
/
dacp.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* DACP protocol handler. This file is part of Shairport Sync.
* Copyright (c) Mike Brady 2017
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
// Information about the four-character codes is from many sources, with thanks, including
// https://github.com/melloware/dacp-net/blob/master/Melloware.DACP/
#include "dacp.h"
#include "common.h"
#include "config.h"
#include <arpa/inet.h>
#include <errno.h>
#include <inttypes.h>
#include <math.h>
#include <memory.h>
#include <netdb.h>
#include <netinet/in.h>
#include <pthread.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include "metadata_hub.h"
#include "tinyhttp/http.h"
typedef struct {
int players_connection_thread_index; // the connection thread index when a player thread is
// associated with this, zero otherwise
int scan_enable; // set to 1 if if sacanning should be considered
char dacp_id[256]; // the DACP ID string
uint16_t port; // zero if no port discovered
short connection_family; // AF_INET6 or AF_INET
uint32_t scope_id; // if it's an ipv6 connection, this will be its scope id
char ip_string[INET6_ADDRSTRLEN]; // the ip string pointing to the client
uint32_t active_remote_id; // send this when you want to send remote control commands
void *port_monitor_private_storage;
} dacp_server_record;
pthread_t dacp_monitor_thread;
dacp_server_record dacp_server;
// HTTP Response data/funcs (See the tinyhttp example.cpp file for more on this.)
struct HttpResponse {
void *body; // this will be a malloc'ed pointer
ssize_t malloced_size; // this will be its allocated size
ssize_t size; // the current size of the content
int code;
};
void *response_realloc(__attribute__((unused)) void *opaque, void *ptr, int size) {
void *t = realloc(ptr, size);
if ((t == NULL) && (size != 0))
debug(1, "Response realloc of size %d failed!", size);
return t;
}
void response_body(void *opaque, const char *data, int size) {
struct HttpResponse *response = (struct HttpResponse *)opaque;
ssize_t space_available = response->malloced_size - response->size;
if (space_available < size) {
// debug(1,"Getting more space for the response -- need %d bytes but only %ld bytes left.\n",
// size,
// size - space_available);
ssize_t size_requested = size - space_available + response->malloced_size + 16384;
void *t = realloc(response->body, size_requested);
response->malloced_size = size_requested;
if (t)
response->body = t;
else {
debug(1, "Can't allocate any more space for parser.\n");
exit(-1);
}
}
memcpy(response->body + response->size, data, size);
response->size += size;
}
static void
response_header(__attribute__((unused)) void *opaque, __attribute__((unused)) const char *ckey,
__attribute__((unused)) int nkey, __attribute__((unused)) const char *cvalue,
__attribute__((unused)) int nvalue) { /* example doesn't care about headers */
}
static void response_code(void *opaque, int code) {
struct HttpResponse *response = (struct HttpResponse *)opaque;
response->code = code;
}
static const struct http_funcs responseFuncs = {
response_realloc, response_body, response_header, response_code,
};
static pthread_mutex_t dacp_conversation_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t dacp_server_information_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_cond_t dacp_server_information_cv = PTHREAD_COND_INITIALIZER;
int dacp_send_command(const char *command, char **body, ssize_t *bodysize) {
// will malloc space for the body or set it to NULL -- the caller should free it.
// Using some custom HTTP-like return codes
// 498 Bad Address information for the DACP server
// 497 Can't establish a socket to the DACP server
// 496 Can't connect to the DACP server
// 495 Error receiving response
// 494 This client is already busy
// 493 Client failed to send a message
// 492 Argument out of range
struct addrinfo hints, *res;
int sockfd;
struct HttpResponse response;
response.body = NULL;
response.malloced_size = 0;
response.size = 0;
response.code = 0;
char portstring[10], server[256], message[1024];
memset(&portstring, 0, sizeof(portstring));
if (dacp_server.connection_family == AF_INET6) {
sprintf(server, "%s%%%u", dacp_server.ip_string, dacp_server.scope_id);
} else {
strcpy(server, dacp_server.ip_string);
}
sprintf(portstring, "%u", dacp_server.port);
// first, load up address structs with getaddrinfo():
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
// debug(1, "DHCP port string is \"%s:%s\".", server, portstring);
int ires = getaddrinfo(server, portstring, &hints, &res);
if (ires) {
// debug(1,"Error %d \"%s\" at getaddrinfo.",ires,gai_strerror(ires));
response.code = 498; // Bad Address information for the DACP server
} else {
// only do this one at a time -- not sure it is necessary, but better safe than sorry
int mutex_reply = sps_pthread_mutex_timedlock(&dacp_conversation_lock, 2000000, command, 1);
// int mutex_reply = pthread_mutex_lock(&dacp_conversation_lock);
if (mutex_reply == 0) {
// debug(1,"dacp_conversation_lock acquired for command \"%s\".",command);
// make a socket:
sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (sockfd == -1) {
// debug(1, "DACP socket could not be created -- error %d: \"%s\".",errno,strerror(errno));
response.code = 497; // Can't establish a socket to the DACP server
} else {
struct timeval tv;
tv.tv_sec = 2;
tv.tv_usec = 0;
if (setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, (const char *)&tv, sizeof tv) == -1)
debug(1, "Error %d setting receive timeout for DACP service.", errno);
if (setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, (const char *)&tv, sizeof tv) == -1)
debug(1, "Error %d setting send timeout for DACP service.", errno);
// connect!
// debug(1, "DACP socket created.");
if (connect(sockfd, res->ai_addr, res->ai_addrlen) < 0) {
debug(3, "DACP connect failed with errno %d.", errno);
response.code = 496; // Can't connect to the DACP server
} else {
// debug(1,"DACP connect succeeded.");
sprintf(message,
"GET /ctrl-int/1/%s HTTP/1.1\r\nHost: %s:%u\r\nActive-Remote: %u\r\n\r\n",
command, dacp_server.ip_string, dacp_server.port, dacp_server.active_remote_id);
// Send command
// debug(1,"DACP connect message: \"%s\".",message);
if (setsockopt(sockfd, SOL_SOCKET, SO_SNDTIMEO, (const char *)&tv, sizeof tv) == -1)
debug(1, "Error %d setting send timeout for DACP service.", errno);
if (send(sockfd, message, strlen(message), 0) != (ssize_t)strlen(message)) {
// debug(1, "Send failed");
response.code = 493; // Client failed to send a message
} else {
response.body = malloc(2048); // it can resize this if necessary
response.malloced_size = 2048;
struct http_roundtripper rt;
http_init(&rt, responseFuncs, &response);
int needmore = 1;
int looperror = 0;
char buffer[8192];
memset(buffer, 0, sizeof(buffer));
while (needmore && !looperror) {
const char *data = buffer;
if (setsockopt(sockfd, SOL_SOCKET, SO_RCVTIMEO, (const char *)&tv, sizeof tv) == -1)
debug(1, "Error %d setting receive timeout for DACP service.", errno);
int ndata = recv(sockfd, buffer, sizeof(buffer), 0);
// debug(1,"Received %d bytes: \"%s\".",ndata,buffer);
if (ndata <= 0) {
debug(1, "dacp_send_command -- error receiving response for command \"%s\".",
command);
free(response.body);
response.body = NULL;
response.malloced_size = 0;
response.size = 0;
response.code = 495; // Error receiving response
looperror = 1;
}
while (needmore && ndata && !looperror) {
int read;
needmore = http_data(&rt, data, ndata, &read);
ndata -= read;
data += read;
}
}
if (http_iserror(&rt)) {
debug(1, "Error parsing data.");
free(response.body);
response.body = NULL;
response.malloced_size = 0;
response.size = 0;
}
// debug(1,"Size of response body is %d",response.size);
http_free(&rt);
}
}
close(sockfd);
// debug(1,"DACP socket closed.");
}
pthread_mutex_unlock(&dacp_conversation_lock);
// debug(1,"Sent command\"%s\" with a response body of size %d.",command,response.size);
// debug(1,"dacp_conversation_lock released.");
} else {
debug(3, "Could not acquire a lock on the dacp transmit/receive section when attempting to "
"send the command \"%s\". Possible timeout?",
command);
response.code = 494; // This client is already busy
}
}
*body = response.body;
*bodysize = response.size;
return response.code;
}
int send_simple_dacp_command(const char *command) {
int reply = 0;
char *server_reply = NULL;
debug(3, "Sending command \"%s\".", command);
ssize_t reply_size = 0;
reply = dacp_send_command(command, &server_reply, &reply_size);
if (server_reply) {
free(server_reply);
server_reply = NULL;
}
return reply;
}
void relinquish_dacp_server_information(rtsp_conn_info *conn) {
// this will set the dacp_server.players_connection_thread_index to zero iff it has the same value
// as the conn's connection number
// this is to signify that the player has stopped, but only if another thread (with a different
// index) hasn't already taken over the dacp service
sps_pthread_mutex_timedlock(
&dacp_server_information_lock, 500000,
"set_dacp_server_information couldn't get DACP server information lock in 0.5 second!.", 2);
if (dacp_server.players_connection_thread_index == conn->connection_number)
dacp_server.players_connection_thread_index = 0;
pthread_mutex_unlock(&dacp_server_information_lock);
}
// this will be running on the thread of its caller, not of the conversation thread...
// tell the DACP conversation thread what DACP server we are listening to
// if the active_remote_id is the same we don't change anything apart from
// the conversation number
// Thus, we can keep the DACP port that might have previously been discovered
void set_dacp_server_information(rtsp_conn_info *conn) {
sps_pthread_mutex_timedlock(
&dacp_server_information_lock, 500000,
"set_dacp_server_information couldn't get DACP server information lock in 0.5 second!.", 2);
dacp_server.players_connection_thread_index = conn->connection_number;
if (strcmp(conn->dacp_id, dacp_server.dacp_id) != 0) {
strncpy(dacp_server.dacp_id, conn->dacp_id, sizeof(dacp_server.dacp_id));
dacp_server.port = 0;
dacp_server.scan_enable = 0;
dacp_server.connection_family = conn->connection_ip_family;
dacp_server.scope_id = conn->self_scope_id;
strncpy(dacp_server.ip_string, conn->client_ip_string, INET6_ADDRSTRLEN);
debug(1, "set_dacp_server_information set IP to \"%s\" and DACP id to \"%s\".",
dacp_server.ip_string, dacp_server.dacp_id);
if (dacp_server.port_monitor_private_storage) // if there's is a monitor already active...
mdns_dacp_dont_monitor(dacp_server.port_monitor_private_storage); // let it go.
dacp_server.port_monitor_private_storage =
mdns_dacp_monitor(dacp_server.dacp_id); // create a new one for us
metadata_hub_modify_prolog();
int ch = metadata_store.dacp_server_active != dacp_server.scan_enable;
metadata_store.dacp_server_active = dacp_server.scan_enable;
if ((metadata_store.client_ip == NULL) ||
(strncmp(metadata_store.client_ip, conn->client_ip_string, INET6_ADDRSTRLEN) != 0)) {
if (metadata_store.client_ip)
free(metadata_store.client_ip);
metadata_store.client_ip = strndup(conn->client_ip_string, INET6_ADDRSTRLEN);
debug(3, "MH Client IP set to: \"%s\"", metadata_store.client_ip);
ch = 1;
}
metadata_hub_modify_epilog(ch);
} else {
if (dacp_server.port) {
debug(1, "Enable scanning.");
dacp_server.scan_enable = 1;
// metadata_hub_modify_prolog();
// int ch = metadata_store.dacp_server_active != dacp_server.scan_enable;
// metadata_store.dacp_server_active = dacp_server.scan_enable;
// metadata_hub_modify_epilog(ch);
}
}
dacp_server.active_remote_id = conn->dacp_active_remote; // even if the dacp_id remains the same,
// the active remote will change.
debug(1, "set_dacp_server_information set active-remote id to %" PRIu32 ".",
dacp_server.active_remote_id);
pthread_cond_signal(&dacp_server_information_cv);
pthread_mutex_unlock(&dacp_server_information_lock);
}
void dacp_monitor_port_update_callback(char *dacp_id, uint16_t port) {
debug(1, "dacp_monitor_port_update_callback with Remote ID \"%s\" and port number %d.", dacp_id,
port);
sps_pthread_mutex_timedlock(
&dacp_server_information_lock, 500000,
"dacp_monitor_port_update_callback couldn't get DACP server information lock in 0.5 second!.",
2);
if (strcmp(dacp_id, dacp_server.dacp_id) == 0) {
dacp_server.port = port;
if (port == 0)
dacp_server.scan_enable = 0;
else {
dacp_server.scan_enable = 1;
debug(1, "dacp_monitor_port_update_callback enables scan");
}
// metadata_hub_modify_prolog();
// int ch = metadata_store.dacp_server_active != dacp_server.scan_enable;
// metadata_store.dacp_server_active = dacp_server.scan_enable;
// metadata_hub_modify_epilog(ch);
} else {
debug(1, "dacp port monitor reporting on an out-of-use remote.");
}
pthread_cond_signal(&dacp_server_information_cv);
pthread_mutex_unlock(&dacp_server_information_lock);
}
void *dacp_monitor_thread_code(__attribute__((unused)) void *na) {
int scan_index = 0;
// char server_reply[10000];
// debug(1, "DACP monitor thread started.");
// wait until we get a valid port number to begin monitoring it
int32_t revision_number = 1;
int bad_result_count = 0;
int idle_scan_count = 0;
while (1) {
int result = 0;
sps_pthread_mutex_timedlock(
&dacp_server_information_lock, 500000,
"dacp_monitor_thread_code couldn't get DACP server information lock in 0.5 second!.", 2);
while (dacp_server.scan_enable == 0) {
// debug(1, "Wait for a valid DACP port");
pthread_cond_wait(&dacp_server_information_cv, &dacp_server_information_lock);
// debug(1,"Wake up with dacp_server.scan_enable == %d.",dacp_server.scan_enable);
}
scan_index++;
int32_t the_volume;
result = dacp_get_volume(&the_volume); // just want the http code
if ((result == 496) || (result == 403) || (result == 501)) {
bad_result_count++;
// debug(1,"Bad Scan : %d.",result);
} else
bad_result_count = 0;
if (metadata_store.player_thread_active == 0)
idle_scan_count++;
else
idle_scan_count = 0;
debug(3, "Scan Result: %d, Bad Scan Count: %d, Idle Scan Count: %d.", result, bad_result_count,
idle_scan_count);
if ((bad_result_count == config.scan_max_bad_response_count) ||
(idle_scan_count == config.scan_max_inactive_count)) {
debug(1, "DACP server status scanning stopped.");
dacp_server.scan_enable = 0;
bad_result_count = 0;
idle_scan_count = 0;
metadata_hub_modify_prolog();
int ch = (metadata_store.dacp_server_active != 0) ||
(metadata_store.advanced_dacp_server_active != 0);
metadata_store.dacp_server_active = 0;
metadata_store.advanced_dacp_server_active = 0;
debug(1, "setting dacp_server_active and advanced_dacp_server_active to 0 with an update "
"flag value of %d",
ch);
metadata_hub_modify_epilog(ch);
}
pthread_mutex_unlock(&dacp_server_information_lock);
// debug(1, "DACP Server ID \"%u\" at \"%s:%u\", scan %d.", dacp_server.active_remote_id,
// dacp_server.ip_string, dacp_server.port, scan_index);
if (dacp_server.scan_enable ==
1) { // if it hasn't been turned off, continue looking for information.
int transient_problem =
(result == 494) ||
(result == 495); // this just means that it couldn't send the query because something
// else
// was sending a command or something
if ((!transient_problem) && (bad_result_count == 0) && (idle_scan_count == 0) &&
(dacp_server.scan_enable == 1)) {
// Any other result means that the DACP server is active, but not providing advanced
// features
metadata_hub_modify_prolog();
int inactive = metadata_store.dacp_server_active == 0;
if (inactive) {
metadata_store.dacp_server_active = 1;
debug(1, "Setting dacp_server_active to active because of a response of %d.", result);
}
int same = metadata_store.advanced_dacp_server_active == (result == 200);
if (!same) {
metadata_store.advanced_dacp_server_active = (result == 200);
debug(1, "Setting dacp_advanced_server_active to %d because of a response of %d.",
(result == 200), result);
}
metadata_hub_modify_epilog(inactive + (!same));
}
if (result == 200) {
metadata_hub_modify_prolog();
int diff = metadata_store.speaker_volume != the_volume;
if (diff)
metadata_store.speaker_volume = the_volume;
metadata_hub_modify_epilog(diff);
ssize_t le;
char *response = NULL;
int32_t item_size;
char command[1024] = "";
snprintf(command, sizeof(command) - 1, "playstatusupdate?revision-number=%d",
revision_number);
// debug(1,"Command: \"%s\"",command);
result = dacp_send_command(command, &response, &le);
// debug(1,"Response to \"%s\" is %d.",command,result);
if (result == 200) {
// if (0) {
char *sp = response;
if (le >= 8) {
// here start looking for the contents of the status update
if (dacp_tlv_crawl(&sp, &item_size) == 'cmst') { // status
// here, we know that we are receiving playerstatusupdates, so set a flag
metadata_hub_modify_prolog();
// debug(1, "playstatusupdate release track metadata");
// metadata_hub_reset_track_metadata();
// metadata_store.playerstatusupdates_are_received = 1;
sp -= item_size; // drop down into the array -- don't skip over it
le -= 8;
// char typestring[5];
// we need to acquire the metadata data structure and possibly update it
while (le >= 8) {
uint32_t type = dacp_tlv_crawl(&sp, &item_size);
le -= item_size + 8;
char *t;
// char u;
// char *st;
int32_t r;
// uint64_t v;
// int i;
switch (type) {
case 'cmsr': // revision number
t = sp - item_size;
revision_number = ntohl(*(uint32_t *)(t));
// debug(1," Serial Number: %d", revision_number);
break;
case 'caps': // play status
t = sp - item_size;
r = *(unsigned char *)(t);
switch (r) {
case 2:
if (metadata_store.play_status != PS_STOPPED) {
metadata_store.play_status = PS_STOPPED;
debug(2, "Play status is \"stopped\".");
}
break;
case 3:
if (metadata_store.play_status != PS_PAUSED) {
metadata_store.play_status = PS_PAUSED;
debug(2, "Play status is \"paused\".");
}
break;
case 4:
if (metadata_store.play_status != PS_PLAYING) {
metadata_store.play_status = PS_PLAYING;
debug(2, "Play status changed to \"playing\".");
}
break;
default:
debug(1, "Unrecognised play status %d received.", r);
break;
}
break;
case 'cash': // shuffle status
t = sp - item_size;
r = *(unsigned char *)(t);
switch (r) {
case 0:
if (metadata_store.shuffle_status != SS_OFF) {
metadata_store.shuffle_status = SS_OFF;
debug(2, "Shuffle status is \"off\".");
}
break;
case 1:
if (metadata_store.shuffle_status != SS_ON) {
metadata_store.shuffle_status = SS_ON;
debug(2, "Shuffle status is \"on\".");
}
break;
default:
debug(1, "Unrecognised shuffle status %d received.", r);
break;
}
break;
case 'carp': // repeat status
t = sp - item_size;
r = *(unsigned char *)(t);
switch (r) {
case 0:
if (metadata_store.repeat_status != RS_OFF) {
metadata_store.repeat_status = RS_OFF;
debug(2, "Repeat status is \"none\".");
}
break;
case 1:
if (metadata_store.repeat_status != RS_ONE) {
metadata_store.repeat_status = RS_ONE;
debug(2, "Repeat status is \"one\".");
}
break;
case 2:
if (metadata_store.repeat_status != RS_ALL) {
metadata_store.repeat_status = RS_ALL;
debug(2, "Repeat status is \"all\".");
}
break;
default:
debug(1, "Unrecognised repeat status %d received.", r);
break;
}
break;
/*
case 'cann': // track name
t = sp - item_size;
if ((metadata_store.track_name == NULL) ||
(strncmp(metadata_store.track_name, t, item_size) != 0)) {
if (metadata_store.track_name)
free(metadata_store.track_name);
metadata_store.track_name = strndup(t, item_size);
debug(1, "Track name changed to: \"%s\"", metadata_store.track_name);
metadata_store.track_name_changed = 1;
metadata_store.changed = 1;
}
break;
case 'cana': // artist name
t = sp - item_size;
if ((metadata_store.artist_name == NULL) ||
(strncmp(metadata_store.artist_name, t, item_size) != 0)) {
if (metadata_store.artist_name)
free(metadata_store.artist_name);
metadata_store.artist_name = strndup(t, item_size);
debug(1, "Artist name changed to: \"%s\"", metadata_store.artist_name);
metadata_store.artist_name_changed = 1;
metadata_store.changed = 1;
}
break;
case 'canl': // album name
t = sp - item_size;
if ((metadata_store.album_name == NULL) ||
(strncmp(metadata_store.album_name, t, item_size) != 0)) {
if (metadata_store.album_name)
free(metadata_store.album_name);
metadata_store.album_name = strndup(t, item_size);
debug(1, "Album name changed to: \"%s\"", metadata_store.album_name);
metadata_store.album_name_changed = 1;
metadata_store.changed = 1;
}
break;
case 'cang': // genre
t = sp - item_size;
if ((metadata_store.genre == NULL) ||
(strncmp(metadata_store.genre, t, item_size) != 0)) {
if (metadata_store.genre)
free(metadata_store.genre);
metadata_store.genre = strndup(t, item_size);
debug(1, "Genre changed to: \"%s\"", metadata_store.genre);
metadata_store.genre_changed = 1;
metadata_store.changed = 1;
}
break;
case 'canp': // nowplaying 4 ids: dbid, plid, playlistItem, itemid (from mellowware
--
// see reference above)
t = sp - item_size;
if (memcmp(metadata_store.item_composite_id, t,
sizeof(metadata_store.item_composite_id)) != 0) {
memcpy(metadata_store.item_composite_id, t,
sizeof(metadata_store.item_composite_id));
char st[33];
char *pt = st;
int it;
for (it = 0; it < 16; it++) {
sprintf(pt, "%02X", metadata_store.item_composite_id[it]);
pt += 2;
}
*pt = 0;
// debug(1, "Item composite ID set to 0x%s.", st);
metadata_store.item_id_changed = 1;
metadata_store.changed = 1;
}
break;
*/
case 'astm':
t = sp - item_size;
r = ntohl(*(uint32_t *)(t));
if (metadata_store.track_metadata)
metadata_store.track_metadata->songtime_in_milliseconds =
ntohl(*(uint32_t *)(t));
break;
/*
case 'mstt':
case 'cant':
case 'cast':
case 'cmmk':
case 'caas':
case 'caar':
t = sp - item_size;
r = ntohl(*(uint32_t *)(t));
printf(" %d", r);
printf(" (0x");
t = sp - item_size;
for (i = 0; i < item_size; i++) {
printf("%02x", *t & 0xff);
t++;
}
printf(")");
break;
case 'asai':
t = sp - item_size;
s = ntohl(*(uint32_t *)(t));
s = s << 32;
t += 4;
v = (ntohl(*(uint32_t *)(t))) & 0xffffffff;
s += v;
printf(" %lu", s);
printf(" (0x");
t = sp - item_size;
for (i = 0; i < item_size; i++) {
printf("%02x", *t & 0xff);
t++;
}
printf(")");
break;
*/
default:
/*
printf(" 0x");
t = sp - item_size;
for (i = 0; i < item_size; i++) {
printf("%02x", *t & 0xff);
t++;
}
*/
break;
}
// printf("\n");
}
// finished possibly writing to the metadata hub
metadata_hub_modify_epilog(1);
} else {
debug(1, "Status Update not found.\n");
}
} else {
debug(1, "Can't find any content in playerstatusupdate request");
}
} /* else {
if (result != 403)
debug(1, "Unexpected response %d to playerstatusupdate request", result);
} */
if (response) {
free(response);
response = NULL;
};
};
/*
strcpy(command,"nowplayingartwork?mw=320&mh=320");
debug(1,"Command: \"%s\", result is %d",command, dacp_send_command(command, &response, &le));
if (response) {
free(response);
response = NULL;
}
strcpy(command,"getproperty?properties=dmcp.volume");
debug(1,"Command: \"%s\", result is %d",command, dacp_send_command(command, &response, &le));
if (response) {
free(response);
response = NULL;
}
strcpy(command,"setproperty?dmcp.volume=100.000000");
debug(1,"Command: \"%s\", result is %d",command, dacp_send_command(command, &response, &le));
if (response) {
free(response);
response = NULL;
}
*/
if (metadata_store.player_thread_active)
sleep(config.scan_interval_when_active);
else
sleep(config.scan_interval_when_inactive);
}
}
debug(1, "DACP monitor thread exiting.");
pthread_exit(NULL);
}
void dacp_monitor_start() {
memset(&dacp_server, 0, sizeof(dacp_server_record));
pthread_create(&dacp_monitor_thread, NULL, dacp_monitor_thread_code, NULL);
}
uint32_t dacp_tlv_crawl(char **p, int32_t *length) {
char typecode[5];
memcpy(typecode, *p, 4);
typecode[4] = '\0';
uint32_t type = ntohl(*(uint32_t *)*p);
*p += 4;
*length = ntohl(*(uint32_t *)*p);
*p += 4 + *length;
// debug(1,"Type seen: '%s' of length %d",typecode,*length);
return type;
}
int dacp_get_client_volume(int32_t *result) {
// debug(1,"dacp_get_client_volume");
char *server_reply = NULL;
int32_t overall_volume = -1;
ssize_t reply_size;
int response =
dacp_send_command("getproperty?properties=dmcp.volume", &server_reply, &reply_size);
if (response == 200) { // if we get an okay
char *sp = server_reply;
int32_t item_size;
if (reply_size >= 8) {
if (dacp_tlv_crawl(&sp, &item_size) == 'cmgt') {
sp -= item_size; // drop down into the array -- don't skip over it
reply_size -= 8;
while (reply_size >= 8) {
uint32_t type = dacp_tlv_crawl(&sp, &item_size);
reply_size -= item_size + 8;
if (type == 'cmvo') { // drop down into the dictionary -- don't skip over it
char *t = sp - item_size;
overall_volume = ntohl(*(uint32_t *)(t));
}
}
} else {
debug(1, "Unexpected payload response from getproperty?properties=dmcp.volume");
}
} else {
debug(1, "Too short a response from getproperty?properties=dmcp.volume");
}
// debug(1, "Overall Volume is %d.", overall_volume);
free(server_reply);
} /* else {
debug(1, "Unexpected response %d to dacp volume control request", response);
} */
if (result) {
*result = overall_volume;
// debug(1,"dacp_get_client_volume returns: %" PRId32 ".",overall_volume);
}
return response;
}
int dacp_set_include_speaker_volume(int64_t machine_number, int32_t vo) {
debug(2, "dacp_set_include_speaker_volume to %" PRId32 ".", vo);
char message[1000];
memset(message, 0, sizeof(message));
sprintf(message, "setproperty?include-speaker-id=%" PRId64 "&dmcp.volume=%" PRId32 "",
machine_number, vo);
debug(2, "sending \"%s\"", message);
return send_simple_dacp_command(message);
// should return 204
}
int dacp_set_speaker_volume(int64_t machine_number, int32_t vo) {
char message[1000];
memset(message, 0, sizeof(message));
sprintf(message, "setproperty?speaker-id=%" PRId64 "&dmcp.volume=%" PRId32 "", machine_number,
vo);
debug(2, "sending \"%s\"", message);
return send_simple_dacp_command(message);
// should return 204
}
int dacp_get_speaker_list(dacp_spkr_stuff *speaker_info, int max_size_of_array,
int *actual_speaker_count) {
// char typestring[5];
char *server_reply = NULL;
int speaker_index = -1; // will be incremented before use
int speaker_count = -1; // will be fixed if there is no problem
ssize_t le;
int response = dacp_send_command("getspeakers", &server_reply, &le);
if (response == 200) {
char *sp = server_reply;
int32_t item_size;
if (le >= 8) {
if (dacp_tlv_crawl(&sp, &item_size) == 'casp') {
// debug(1,"Speakers:",item_size);
sp -= item_size; // drop down into the array -- don't skip over it
le -= 8;
while (le >= 8) {
uint32_t type = dacp_tlv_crawl(&sp, &item_size);
if (type == 'mdcl') { // drop down into the dictionary -- don't skip over it
// debug(1,">>>> Dictionary:");
sp -= item_size;
le -= 8;
speaker_index++;
if (speaker_index == max_size_of_array)
return 413; // Payload Too Large -- too many speakers
speaker_info[speaker_index].active = 0;
speaker_info[speaker_index].speaker_number = 0;
speaker_info[speaker_index].volume = 0;
speaker_info[speaker_index].name = NULL;
} else {
le -= item_size + 8;
char *t;
// char u;
int32_t r;
int64_t s, v;
switch (type) {
case 'minm':
t = sp - item_size;
speaker_info[speaker_index].name = strndup(t, item_size);
// debug(1," \"%s\"",speaker_info[speaker_index].name);
break;
case 'cmvo':
t = sp - item_size;
r = ntohl(*(uint32_t *)(t));
speaker_info[speaker_index].volume = r;
// debug(1,"The individual volume of speaker \"%s\" is
// \"%d\".",speaker_info[speaker_index].name,r);
break;
case 'msma':
t = sp - item_size;
s = ntohl(*(uint32_t *)(t));
s = s << 32;
t += 4;
v = (ntohl(*(uint32_t *)(t))) & 0xffffffff;
s += v;
speaker_info[speaker_index].speaker_number = s;
// debug(1,"Speaker machine number: %ld",s);
break;
case 'caia':
speaker_info[speaker_index].active = 1;
break;
/*
case 'caip':
case 'cavd':
case 'caiv':
case 'cads':
*(uint32_t *)typestring = htonl(type);
typestring[4] = 0;
t = sp-item_size;
u = *t;
debug(1,"Type: '%s' Value: \"%d\".",typestring,u);
break;
*/
default:
break;
}
}
}
// debug(1,"Total of %d speakers found. Here are the active ones:",speaker_index+1);
speaker_count = speaker_index + 1; // number of speaker entries in the array
} else {
debug(1, "Speaker array not found.");
}
/*
int i;
for (i=0;i<le;i++) {
if (*sp < ' ')
debug(1,"%d %02x", i, *sp);
else
debug(1,"%d %02x '%c'", i, *sp,*sp);
sp++;
}
*/
} else {
debug(1, "Can't find any content in dacp speakers request");
}
free(server_reply);
server_reply = NULL;
} else {
debug(1, "Unexpected response %d to dacp speakers request", response);
}
if (actual_speaker_count)
*actual_speaker_count = speaker_count;
return response;
}
int dacp_get_volume(int32_t *the_actual_volume) {
// get the speaker volume information from the DACP source and store it in the metadata_hub
// A volume command has been sent from the client
// let's get the master volume from the DACP remote control
struct dacp_speaker_stuff speaker_info[50];
// we need the overall volume and the speakers information to get this device's relative volume to
// calculate the real volume
int32_t overall_volume = 0;
int32_t actual_volume = 0;
int http_response = dacp_get_client_volume(&overall_volume);
if (http_response == 200) {
// debug(1,"Overall volume is: %u.",overall_volume);
int speaker_count = 0;
http_response = dacp_get_speaker_list((dacp_spkr_stuff *)&speaker_info, 50, &speaker_count);
if (http_response == 200) {
// get our machine number
uint16_t *hn = (uint16_t *)config.hw_addr;
uint32_t *ln = (uint32_t *)(config.hw_addr + 2);
uint64_t t1 = ntohs(*hn);
uint64_t t2 = ntohl(*ln);
int64_t machine_number = (t1 << 32) + t2; // this form is useful
// Let's find our own speaker in the array and pick up its relative volume
int i;
int32_t relative_volume = 0;
for (i = 0; i < speaker_count; i++) {
if (speaker_info[i].speaker_number == machine_number) {
relative_volume = speaker_info[i].volume;
/*
debug(1,"Our speaker was found with a relative volume of: %u.",relative_volume);
if (speaker_info[i].active)
debug(1,"Our speaker is active.");
else
debug(1,"Our speaker is inactive.");
*/
}
}
actual_volume = (overall_volume * relative_volume + 50) / 100;
// debug(1,"Overall volume: %d, relative volume: %d%, actual volume:
// %d.",overall_volume,relative_volume,actual_volume);
// debug(1,"Our actual speaker volume is %d.",actual_volume);
// metadata_hub_modify_prolog();
// metadata_store.speaker_volume = actual_volume;
// metadata_hub_modify_epilog(1);
} else {
debug(1, "Unexpected return code %d from dacp_get_speaker_list.", http_response);
}
} else {