/
hdhomerun_device_selector.c
595 lines (494 loc) · 16.6 KB
/
hdhomerun_device_selector.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
/*
* hdhomerun_device_selector.c
*
* Copyright © 2009-2016 Silicondust USA Inc. <www.silicondust.com>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "hdhomerun.h"
struct hdhomerun_device_selector_t {
struct hdhomerun_device_t **hd_list;
size_t hd_count;
struct hdhomerun_discover_t *ds;
struct hdhomerun_debug_t *dbg;
};
struct hdhomerun_device_selector_t *hdhomerun_device_selector_create(struct hdhomerun_debug_t *dbg)
{
struct hdhomerun_device_selector_t *hds = (struct hdhomerun_device_selector_t *)calloc(1, sizeof(struct hdhomerun_device_selector_t));
if (!hds) {
hdhomerun_debug_printf(dbg, "hdhomerun_device_selector_create: failed to allocate selector object\n");
return NULL;
}
hds->dbg = dbg;
return hds;
}
void hdhomerun_device_selector_destroy(struct hdhomerun_device_selector_t *hds, bool destroy_devices)
{
if (destroy_devices) {
size_t index;
for (index = 0; index < hds->hd_count; index++) {
struct hdhomerun_device_t *entry = hds->hd_list[index];
hdhomerun_device_destroy(entry);
}
}
if (hds->hd_list) {
free(hds->hd_list);
}
if (hds->ds) {
hdhomerun_discover_destroy(hds->ds);
}
free(hds);
}
int hdhomerun_device_selector_get_device_count(struct hdhomerun_device_selector_t *hds)
{
return (int)hds->hd_count;
}
void hdhomerun_device_selector_add_device(struct hdhomerun_device_selector_t *hds, struct hdhomerun_device_t *hd)
{
size_t index;
for (index = 0; index < hds->hd_count; index++) {
struct hdhomerun_device_t *entry = hds->hd_list[index];
if (entry == hd) {
return;
}
}
struct hdhomerun_device_t **hd_list = (struct hdhomerun_device_t **)realloc(hds->hd_list, (hds->hd_count + 1) * sizeof(struct hdhomerun_device_t *));
if (!hd_list) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_add_device: failed to allocate device list\n");
return;
}
hds->hd_list = hd_list;
hds->hd_list[hds->hd_count++] = hd;
}
void hdhomerun_device_selector_remove_device(struct hdhomerun_device_selector_t *hds, struct hdhomerun_device_t *hd)
{
size_t index = 0;
while (1) {
if (index >= hds->hd_count) {
return;
}
struct hdhomerun_device_t *entry = hds->hd_list[index];
if (entry == hd) {
break;
}
index++;
}
while (index + 1 < hds->hd_count) {
hds->hd_list[index] = hds->hd_list[index + 1];
index++;
}
hds->hd_list[index] = NULL;
hds->hd_count--;
}
struct hdhomerun_device_t *hdhomerun_device_selector_find_device(struct hdhomerun_device_selector_t *hds, uint32_t device_id, unsigned int tuner_index)
{
size_t index;
for (index = 0; index < hds->hd_count; index++) {
struct hdhomerun_device_t *entry = hds->hd_list[index];
if (hdhomerun_device_get_device_id(entry) != device_id) {
continue;
}
if (hdhomerun_device_get_tuner(entry) != tuner_index) {
continue;
}
return entry;
}
return NULL;
}
static int hdhomerun_device_selector_load_from_str_discover(struct hdhomerun_device_selector_t *hds, uint32_t device_id, const struct sockaddr *device_addr)
{
if (!hds->ds) {
hds->ds = hdhomerun_discover_create(hds->dbg);
if (!hds->ds) {
return 0;
}
}
uint32_t device_types[1];
device_types[0] = HDHOMERUN_DEVICE_TYPE_TUNER;
if (device_id == 0) {
device_id = HDHOMERUN_DEVICE_ID_WILDCARD;
}
int ret;
if (hdhomerun_sock_sockaddr_is_addr(device_addr)) {
if (device_id == HDHOMERUN_DEVICE_ID_WILDCARD) {
ret = hdhomerun_discover2_find_devices_targeted(hds->ds, device_addr, device_types, 1);
} else {
ret = hdhomerun_discover2_find_device_id_targeted(hds->ds, device_addr, device_id);
}
} else {
uint32_t flags = HDHOMERUN_DISCOVER_FLAGS_IPV4_GENERAL;
if (device_id == HDHOMERUN_DEVICE_ID_WILDCARD) {
ret = hdhomerun_discover2_find_devices_broadcast(hds->ds, flags, device_types, 1);
} else {
ret = hdhomerun_discover2_find_device_id_broadcast(hds->ds, flags, device_id);
}
}
if (ret <= 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_load_from_str_discover: device not found\n");
return 0;
}
struct hdhomerun_discover2_device_t *device = hdhomerun_discover2_iter_device_first(hds->ds);
struct hdhomerun_discover2_device_if_t *device_if = hdhomerun_discover2_iter_device_if_first(device);
device_id = hdhomerun_discover2_device_get_device_id(device);
uint8_t tuner_count = hdhomerun_discover2_device_get_tuner_count(device);
struct sockaddr_storage actual_ip_addr;
hdhomerun_discover2_device_if_get_ip_addr(device_if, &actual_ip_addr);
int count = 0;
unsigned int tuner_index;
for (tuner_index = 0; tuner_index < tuner_count; tuner_index++) {
struct hdhomerun_device_t *hd = hdhomerun_device_create_ex(device_id, (struct sockaddr *)&actual_ip_addr, tuner_index, hds->dbg);
if (!hd) {
continue;
}
hdhomerun_device_selector_add_device(hds, hd);
count++;
}
return count;
}
static bool hdhomerun_device_selector_load_from_str_parse_device_id(const char *name, uint32_t *pdevice_id)
{
char *end;
uint32_t device_id = (uint32_t)strtoul(name, &end, 16);
if (end != name + 8) {
return false;
}
if (*end != 0) {
return false;
}
*pdevice_id = device_id;
return true;
}
static bool hdhomerun_device_selector_load_from_str_parse_dns(const char *name, struct sockaddr_storage *device_addr)
{
const char *ptr = name;
if (*ptr == 0) {
return false;
}
while (1) {
char c = *ptr++;
if (c == 0) {
break;
}
if ((c >= '0') && (c <= '9')) {
continue;
}
if ((c >= 'a') && (c <= 'z')) {
continue;
}
if ((c >= 'A') && (c <= 'Z')) {
continue;
}
if ((c == '.') || (c == '-')) {
continue;
}
return false;
}
return hdhomerun_sock_getaddrinfo_addr_ex(AF_INET, name, device_addr);
}
static int hdhomerun_device_selector_load_from_str_tail(struct hdhomerun_device_selector_t *hds, const char *tail, uint32_t device_id, struct sockaddr_storage *device_addr)
{
const char *ptr = tail;
if (*ptr == 0) {
return hdhomerun_device_selector_load_from_str_discover(hds, device_id, (struct sockaddr *)device_addr);
}
if (*ptr == ':') {
ptr++;
char *end;
unsigned long port = strtoul(ptr + 1, &end, 10);
if (*end != 0) {
return 0;
}
if ((port < 1024) || (port > 65535)) {
return 0;
}
if (device_addr->ss_family == AF_INET) {
struct sockaddr_in *device_addr_in = (struct sockaddr_in *)device_addr;
device_addr_in->sin_port = htons((uint16_t)port);
struct hdhomerun_device_t *hd = hdhomerun_device_create_multicast_ex((struct sockaddr *)device_addr, hds->dbg);
if (!hd) {
return 0;
}
hdhomerun_device_selector_add_device(hds, hd);
return 1;
}
if (device_addr->ss_family == AF_INET6) {
struct sockaddr_in6 *device_addr_in = (struct sockaddr_in6 *)device_addr;
device_addr_in->sin6_port = htons((uint16_t)port);
struct hdhomerun_device_t *hd = hdhomerun_device_create_multicast_ex((struct sockaddr *)device_addr, hds->dbg);
if (!hd) {
return 0;
}
hdhomerun_device_selector_add_device(hds, hd);
return 1;
}
return 0;
}
if (*ptr == '-') {
ptr++;
char *end;
unsigned int tuner_index = (unsigned int)strtoul(ptr, &end, 10);
if (*end != 0) {
return 0;
}
struct hdhomerun_device_t *hd = hdhomerun_device_create_ex(device_id, (struct sockaddr *)device_addr, tuner_index, hds->dbg);
if (!hd) {
return 0;
}
hdhomerun_device_selector_add_device(hds, hd);
return 1;
}
return 0;
}
int hdhomerun_device_selector_load_from_str(struct hdhomerun_device_selector_t *hds, char *device_str)
{
char str[64];
if (!hdhomerun_sprintf(str, str + sizeof(str), "%s", device_str)) {
return 0;
}
uint32_t device_id = HDHOMERUN_DEVICE_ID_WILDCARD;
struct sockaddr_storage device_addr;
device_addr.ss_family = 0;
char *ptr = str;
bool framed = (*ptr == '[');
if (framed) {
ptr++;
char *end = strchr(ptr, ']');
if (!end) {
return 0;
}
*end++ = 0;
if (hdhomerun_sock_ip_str_to_sockaddr(ptr, &device_addr)) {
return hdhomerun_device_selector_load_from_str_tail(hds, end, device_id, &device_addr);
}
return 0;
}
char *dash = strchr(ptr, '-');
if (dash) {
*dash = 0;
if (hdhomerun_device_selector_load_from_str_parse_device_id(ptr, &device_id)) {
*dash = '-';
return hdhomerun_device_selector_load_from_str_tail(hds, dash, device_id, &device_addr);
}
if (hdhomerun_sock_ip_str_to_sockaddr(ptr, &device_addr)) {
*dash = '-';
return hdhomerun_device_selector_load_from_str_tail(hds, dash, device_id, &device_addr);
}
*dash = '-';
if (hdhomerun_device_selector_load_from_str_parse_dns(ptr, &device_addr)) {
return hdhomerun_device_selector_load_from_str_discover(hds, device_id, (struct sockaddr *)&device_addr);
}
return 0;
}
char *colon = strchr(ptr, ':');
if (colon) {
char *second_colon = strchr(colon, ':');
if (second_colon) {
if (hdhomerun_sock_ip_str_to_sockaddr(ptr, &device_addr)) {
return hdhomerun_device_selector_load_from_str_discover(hds, device_id, (struct sockaddr *)&device_addr);
}
return 0;
}
*colon = 0;
if (hdhomerun_sock_ip_str_to_sockaddr(ptr, &device_addr)) {
*colon = ':';
return hdhomerun_device_selector_load_from_str_tail(hds, colon, device_id, &device_addr);
}
return 0;
}
if (hdhomerun_device_selector_load_from_str_parse_device_id(ptr, &device_id)) {
return hdhomerun_device_selector_load_from_str_discover(hds, device_id, (struct sockaddr *)&device_addr);
}
if (hdhomerun_sock_ip_str_to_sockaddr(ptr, &device_addr)) {
return hdhomerun_device_selector_load_from_str_discover(hds, device_id, (struct sockaddr *)&device_addr);
}
if (hdhomerun_device_selector_load_from_str_parse_dns(ptr, &device_addr)) {
return hdhomerun_device_selector_load_from_str_discover(hds, device_id, (struct sockaddr *)&device_addr);
}
return 0;
}
int hdhomerun_device_selector_load_from_file(struct hdhomerun_device_selector_t *hds, char *filename)
{
FILE *fp = fopen(filename, "r");
if (!fp) {
return 0;
}
int count = 0;
while(1) {
char device_str[32];
if (!fgets(device_str, sizeof(device_str), fp)) {
break;
}
count += hdhomerun_device_selector_load_from_str(hds, device_str);
}
fclose(fp);
return count;
}
#if defined(_WIN32) && !defined(_WINRT)
int hdhomerun_device_selector_load_from_windows_registry(struct hdhomerun_device_selector_t *hds, wchar_t *wsource)
{
HKEY tuners_key;
LONG ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, L"SOFTWARE\\Silicondust\\HDHomeRun\\Tuners", 0, KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS, &tuners_key);
if (ret != ERROR_SUCCESS) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_load_from_windows_registry: failed to open tuners registry key (%ld)\n", (long)ret);
return 0;
}
int count = 0;
DWORD index = 0;
while (1) {
/* Next tuner device. */
wchar_t wdevice_str[32];
DWORD size = sizeof(wdevice_str);
ret = RegEnumKeyEx(tuners_key, index++, wdevice_str, &size, NULL, NULL, NULL, NULL);
if (ret != ERROR_SUCCESS) {
break;
}
/* Check device configuation. */
HKEY device_key;
ret = RegOpenKeyEx(tuners_key, wdevice_str, 0, KEY_QUERY_VALUE, &device_key);
if (ret != ERROR_SUCCESS) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_load_from_windows_registry: failed to open registry key for %S (%ld)\n", wdevice_str, (long)ret);
continue;
}
wchar_t wsource_test[32];
size = sizeof(wsource_test);
if (RegQueryValueEx(device_key, L"Source", NULL, NULL, (LPBYTE)&wsource_test, &size) != ERROR_SUCCESS) {
wsprintf(wsource_test, L"Unknown");
}
RegCloseKey(device_key);
if (_wcsicmp(wsource_test, wsource) != 0) {
continue;
}
/* Create and add device. */
char device_str[32];
hdhomerun_sprintf(device_str, device_str + sizeof(device_str), "%S", wdevice_str);
count += hdhomerun_device_selector_load_from_str(hds, device_str);
}
RegCloseKey(tuners_key);
return count;
}
#endif
static bool hdhomerun_device_selector_choose_test(struct hdhomerun_device_selector_t *hds, struct hdhomerun_device_t *test_hd)
{
const char *name = hdhomerun_device_get_name(test_hd);
/*
* Attempt to aquire lock.
*/
char *error = NULL;
int ret = hdhomerun_device_tuner_lockkey_request(test_hd, &error);
if (ret > 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s chosen\n", name);
return true;
}
if (ret < 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s communication error\n", name);
return false;
}
/*
* In use - check target.
*/
char *target;
ret = hdhomerun_device_get_tuner_target(test_hd, &target);
if (ret < 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s communication error\n", name);
return false;
}
if (ret == 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use, failed to read target\n", name);
return false;
}
if (strcmp(target, "none") == 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use, no target set\n", name);
return false;
}
if ((strncmp(target, "udp://", 6) != 0) && (strncmp(target, "rtp://", 6) != 0)) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use by %s\n", name, target);
return false;
}
unsigned int a[4];
unsigned int target_port;
if (sscanf(target + 6, "%u.%u.%u.%u:%u", &a[0], &a[1], &a[2], &a[3], &target_port) != 5) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use, unexpected target set (%s)\n", name, target);
return false;
}
uint32_t target_ip = (uint32_t)((a[0] << 24) | (a[1] << 16) | (a[2] << 8) | (a[3] << 0));
uint32_t local_ip = hdhomerun_device_get_local_machine_addr(test_hd);
if (target_ip != local_ip) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use by %s\n", name, target);
return false;
}
/*
* Test local port.
*/
struct hdhomerun_sock_t *test_sock = hdhomerun_sock_create_udp();
if (!test_sock) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use, failed to create test sock\n", name);
return false;
}
bool inuse = (hdhomerun_sock_bind(test_sock, INADDR_ANY, (uint16_t)target_port, false) == false);
hdhomerun_sock_destroy(test_sock);
if (inuse) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use by local machine\n", name);
return false;
}
/*
* Dead local target, force clear lock.
*/
ret = hdhomerun_device_tuner_lockkey_force(test_hd);
if (ret < 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s communication error\n", name);
return false;
}
if (ret == 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use by local machine, dead target, failed to force release lockkey\n", name);
return false;
}
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s in use by local machine, dead target, lockkey force successful\n", name);
/*
* Attempt to aquire lock.
*/
ret = hdhomerun_device_tuner_lockkey_request(test_hd, &error);
if (ret > 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s chosen\n", name);
return true;
}
if (ret < 0) {
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s communication error\n", name);
return false;
}
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_test: device %s still in use after lockkey force (%s)\n", name, error);
return false;
}
struct hdhomerun_device_t *hdhomerun_device_selector_choose_and_lock(struct hdhomerun_device_selector_t *hds, struct hdhomerun_device_t *prefered)
{
/* Test prefered device first. */
if (prefered) {
if (hdhomerun_device_selector_choose_test(hds, prefered)) {
return prefered;
}
}
/* Test other tuners. */
size_t index;
for (index = 0; index < hds->hd_count; index++) {
struct hdhomerun_device_t *entry = hds->hd_list[index];
if (entry == prefered) {
continue;
}
if (hdhomerun_device_selector_choose_test(hds, entry)) {
return entry;
}
}
hdhomerun_debug_printf(hds->dbg, "hdhomerun_device_selector_choose_and_lock: no devices available\n");
return NULL;
}