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 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378
|
/*
* Argyll Color Correction System
* ChromCast support
*
* Author: Graeme W. Gill
* Date: 28/8/2014
*
* Copyright 2014 Graeme W. Gill
* All rights reserved.
*
* This material is licenced under the GNU AFFERO GENERAL PUBLIC LICENSE Version 3 :-
* see the License2.txt file for licencing details.
*
*/
/*
* This class provides simple access to the Google ChromeCast
* for the purposes of generating Video Test patches.
*/
/*
TTBD: Ideally we should use the system mDNS resource if it is available,
and fall back to our mDNS code if not.
ie. Linux may have nothing, be using avahi-daemon,
possibly Zeroconf (== Bonjour ?)
Avahi has Bonjour compatibility library ??
ie. OS X is using mDNSRespo (Bonjour ?)
MSWin may have Bonjour installed on it ?
Has dns-sd command - what's that using (SSDP/UPnP ?)
From <http://stackoverflow.com/questions/8659638/how-does-windows-know-how-to-resolve-mdns-queries>
Bonjour for Windows allows any software using the standard name resolution APIs
to resolve mDNS names; it does so by registering a DLL (mdnsnsp.dll) as a
namespace provider using WSCInstallNameSpace.
The corresponding code is included in the mDNSResponder source (in particular,
look at the mdnsNSP and NSPTool components).
To test on Linux:
To check what's listening: sudo netstat -anp | grep 5353
/etc/init.d/avahi-daemon stop
/etc/init.d/avahi-daemon start
To test on OS X:
To check what's listening: sudo netstat -an | grep 5353
launchctl unload -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist
*/
#include <time.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <stdarg.h>
#include <math.h>
#include <assert.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include "copyright.h"
#include "aconfig.h"
#include <sys/types.h>
#ifndef SALONEINSTLIB
#include "numlib.h"
#else
#include "numsup.h"
#endif
#include "conv.h"
#include "ccmdns.h"
#undef DEBUG /* [und] */
#if defined(NT) // Windows specific
# if _WIN32_WINNT < 0x0400
# undef _WIN32_WINNT
# define _WIN32_WINNT 0x0400 // To make it link in VS2005
# endif
# define WIN32_LEAN_AND_MEAN
# include <winsock2.h>
# include <windows.h>
# include <ws2tcpip.h>
# include <process.h>
# include <direct.h>
# include <io.h>
# define ERRNO GetLastError()
# define UDP_SOCKET_TIMEOUT WSAETIMEDOUT
#else /* !NT = Unix, OS X */
# include <errno.h>
# include <sys/types.h>
# include <sys/wait.h>
# include <sys/socket.h>
# include <sys/select.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <sys/time.h>
# include <stdint.h>
# include <inttypes.h>
# include <netdb.h>
# include <pwd.h>
# include <unistd.h>
# include <dirent.h>
typedef int SOCKET;
# define ERRNO errno
# define INVALID_SOCKET -1
# define SOCKET_ERROR -1
# define UDP_SOCKET_TIMEOUT EAGAIN
#define closesocket(xxx) close(xxx);
#endif
#ifdef DEBUG
# define DBG(xxx) a1logd xxx ;
# define DBG2(xxx) a1logd xxx ;
# define DLEV 0
# define DLEVP1 0
#else
# define DBG(xxx) ;
# define DBG2(xxx) a1logd xxx ;
# define DLEV 2
# define DLEVP1 3
#endif /* DEBUG */
/* ================================================================ */
/* mDNS details */
#define DESTINATION_MCAST "224.0.0.251"
#define DESTINATION_MCASTV6 "FF02::FB"
#define SOURCE_PORT 5353
#define DESTINATION_PORT 5353
#define BUFSIZE 2048
/* Various DNS defines */
#define DNS_CLASS_IN 0x0001
// Used by ChromeCast
#define DNS_TYPE_PTR 12 /* Domain name pointer */
#define DNS_TYPE_TXT 16 /* Text String */
#define DNS_TYPE_SRV 33 /* Server selection (SRV) record */
#define DNS_TYPE_A 1 /* Host address (A) record */
#define DNS_TYPE_AAAA 28 /* IPv6 address ??? */
#define DNS_TYPE_NSEC 47 /* DNS Next Secure Name */
char *cctype2str(cctype typ) {
switch (typ) {
case cctyp_unkn:
return "Unknown";
case cctyp_1:
return "One";
case cctyp_2:
return "Two";
case cctyp_Audio:
return "Audio";
case cctyp_Ultra:
return "Ultra";
case cctyp_Other:
return "Other";
default:
return "Unexpected";
}
}
#ifdef NEVER
/* Print out a V6 address in zero compresed form */
/* (It would be nice to add zero compression) */
static char *print_IPV6_Address(ORD8 *buf) {
static char sbuf[40], *p = sbuf;
int i;
for (i = 0; i < 8; i++) {
p += sprintf(p, "%x", buf[i * 2 + 1] * 256 + buf[i * 2 + 0]);
if (i < 7)
*p++ = ':';
}
*p++ = '\000';
return sbuf;
}
#endif
/* Write a DNS string to a buffer. */
/* return the offset of the next byte after the string */
static int write_string(ORD8 *buf, int off, char *s) {
int len = strlen(s);
if (len >= 0xc0)
len = 0xc0; // Hmm.
buf[off] = len;
off++;
memcpy(buf + off, s, len);
off += len;
return off;
}
/* Return NZ on error */
static int init_mDNS() {
#ifdef NT
WSADATA data;
if (WSAStartup(MAKEWORD(2,2), &data)) {
DBG((g_log,0,"WSAStartup failed\n"))
return 1;
}
#endif
return 0;
}
/* Setup the send and recieve socket */
/* Return nz on error */
static int init_socket_mDNS(SOCKET *psock) {
int nRet, nOptVal;
int off;
SOCKET sock;
struct sockaddr_in stSourceAddr;
struct ip_mreq stIpMreq;
DBG((g_log,0,"init_socket_mDNS() called\n"))
/* get a datagram (UDP) socket */
sock = socket(PF_INET, SOCK_DGRAM, 0);
if (sock == INVALID_SOCKET) {
DBG((g_log,0,"opening UDP socked failed with %d\n",ERRNO))
return 1;
}
/*----------------------- to send --------------------------- */
/* Theoretically, you do not need any special preparation to
* send to a multicast address. However, you may want a few
* things to overcome the limits of the default behavior
*/
// If we're doing a one-shot, we shouldn't transmit from port 5353, */
// but ChromCast won't see the packet if we don't. */
/* We can't send from port 5353 if someone else is using it, */
/* so set the SO_REUSEADDR option (which is enough for MSWin), */
/* and SO_REUSEPORT for OS X and Linux */
{
int on = 1;
if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (const char *)&on, sizeof(on))) {
DBG((g_log,0,"setsockopt(SO_REUSEADDR) failed with %d\n",ERRNO))
closesocket(sock);
return 1;
}
/* Need this to be able to open port on Unix like systems */
#ifndef NT
# ifndef SO_REUSEPORT
# ifdef __APPLE__
# define SO_REUSEPORT 0x0200
# else /* Linux */
# define SO_REUSEPORT 15
# endif
# endif
if (setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, (const char *)&on, sizeof(on))) {
DBG((g_log,0,"setsockopt(SO_REUSEPORT) failed with %d\n",ERRNO))
}
#endif
}
/* init source address structure */
stSourceAddr.sin_family = PF_INET;
stSourceAddr.sin_port = htons(SOURCE_PORT);
stSourceAddr.sin_addr.s_addr = INADDR_ANY;
/*
* Calling bind() is not required, but some implementations need it
* before you can reference any multicast socket options
* and in this case we must be on port 5353 for ChromeCast to see the packet
*/
nRet = bind(sock, (struct sockaddr *)&stSourceAddr,
sizeof(struct sockaddr));
if (nRet == SOCKET_ERROR) {
DBG((g_log,0,"bind failed with %d\n",ERRNO))
closesocket(sock);
return 1;
}
/* - - - - - - - */
/* Send setup */
/* disable loopback of multicast datagrams we send, since the
* default--according to Steve Deering--is to loopback all
* datagrams sent on any interface which is a member of the
* destination group address of that datagram.
*/
nOptVal = 0;
nRet = setsockopt (sock, IPPROTO_IP, IP_MULTICAST_LOOP,
(char *)&nOptVal, sizeof(int));
if (nRet == SOCKET_ERROR) {
/* rather than notifying the user, we make note that this option
* failed. Some WinSocks don't support this option, and default
* with loopback disabled), so this failure is of no consequence.
* However, if we *do* get loop-backed data, we'll know why
*/
DBG((g_log,0,"[disabling loopback failed with %d]\n",ERRNO))
}
/* Is this desirable ? */
/* increase the IP TTL from the default of one to 64, so our
* multicast datagrams can get off of the local network
*/
nOptVal = 64;
nRet = setsockopt(sock, IPPROTO_IP, IP_MULTICAST_TTL,
(char *)&nOptVal, sizeof(int));
if (nRet == SOCKET_ERROR) {
DBG((g_log,0,"increasing TTL failed with %d\n",ERRNO))
closesocket(sock);
return 1;
}
if (psock != NULL)
*psock = sock;
/* - - - - - - - */
/* Recieve setup */
/* join the multicast group we want to receive datagrams from */
stIpMreq.imr_multiaddr.s_addr = inet_addr(DESTINATION_MCAST); /* group addr */
stIpMreq.imr_interface.s_addr = INADDR_ANY; /* use default */
nRet = setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP,
(char *)&stIpMreq, sizeof (struct ip_mreq));
if (nRet == SOCKET_ERROR) {
DBG((g_log,0,"registering for read events failed with %d\n",ERRNO))
closesocket(sock);
return 1;
}
/* Make this timeout after 100 msec second */
#ifdef NT
{
DWORD tv;
tv = 100;
if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (const char*)&tv, sizeof(tv)) < 0) {
DBG((g_log,0,"setsockopt timeout failed with %d\n",ERRNO))
closesocket(sock);
return 1;
}
}
#else
{
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 100 * 1000;
if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (const char*)&tv, sizeof(tv)) < 0) {
DBG((g_log,0,"setsockopt timeout failed with %d\n",ERRNO))
closesocket(sock);
return 1;
}
}
#endif
if (psock != NULL)
*psock = sock;
DBG((g_log,0,"init mDNS socket succeed\n",ERRNO))
return 0;
}
/* Send an mDNS query */
/* On some platforms if we try to transmit & recieve at the same time (what ?) */
/* Return nz on error */
static int send_mDNS(SOCKET sock) {
int nRet;
int off;
ORD8 achOutBuf[BUFSIZE];
struct sockaddr_in stDestAddr;
DBG((g_log,0,"send_mDNS() called\n"))
/* Initialize the Destination Address structure and send */
stDestAddr.sin_family = PF_INET;
stDestAddr.sin_addr.s_addr = inet_addr(DESTINATION_MCAST);
stDestAddr.sin_port = htons(DESTINATION_PORT);
/* Setup the FQDN data packet to send */
write_ORD16_be(achOutBuf + 0, 0); /* ID */
write_ORD16_be(achOutBuf + 2, 0); /* Flags */
write_ORD16_be(achOutBuf + 4, 1); /* QDCOUNT - one question */
write_ORD16_be(achOutBuf + 6, 0); /* ANCOUNT */
write_ORD16_be(achOutBuf + 8, 0); /* NSCOUNT */
write_ORD16_be(achOutBuf + 10, 0); /* ARCOUNT */
off = 12;
off = write_string(achOutBuf, off, "_googlecast");
off = write_string(achOutBuf, off, "_tcp");
off = write_string(achOutBuf, off, "local");
write_ORD8(achOutBuf + off, 0); /* null string */
off += 1;
write_ORD16_be(achOutBuf + off, 0x000c); /* QCOUNT */
off += 2;
/* Set top bit to get a unicast response (not for ChromeCast though) */
write_ORD16_be(achOutBuf + off, 0x0001); /* QCLASS */
off += 2;
nRet = sendto(sock, (char *)achOutBuf, off,
0,
(struct sockaddr *) &stDestAddr,
sizeof(struct sockaddr));
if (nRet == SOCKET_ERROR) {
DBG((g_log,0,"sending mDNS query failed with %d\n",ERRNO))
return 1;
}
DBG((g_log,0,"sending mDNS query succeed\n",ERRNO))
return 0;
}
static int parse_dns(char **name, char **ip, cctype *ptyp, int *pcaflags, ORD8 *buf, int size);
/* Free up what get_ccids returned */
void free_ccids(ccast_id **ids) {
if (ids != NULL) {
int i;
for (i = 0; ids[i] != NULL; i++) {
free(ids[i]->name);
free(ids[i]->ip);
free(ids[i]);
}
free(ids);
}
}
/* Spend the given time waiting for replies. */
/* (Note than on MSWin this will be a minimum of 500msec) */
/* Add any ChromeCast replies to the list. */
/* return nz on error & free *ids */
static int receive_mDNS(SOCKET sock, ccast_id ***ids, int *nids, int emsec) {
unsigned int smsec;
unsigned int nSize;
int off, size;
ORD8 achInBuf[BUFSIZE];
struct sockaddr_in stSourceAddr;
DBG((g_log,0,"receive_mDNS() called with %d ids\n",*nids))
/* While there is still wait time */
for (smsec = msec_time(), emsec += smsec;msec_time() <= emsec;) {
int i;
char *name, *ip;
cctype typ;
int caflags; /* (We're not currently saving this) */
struct sockaddr stSockAddr;
/* Recv the available data */
nSize = sizeof(struct sockaddr);
size = recvfrom(sock, (char *)achInBuf,
BUFSIZE, 0, (struct sockaddr *) &stSockAddr, &nSize);
if (size == SOCKET_ERROR) {
if (ERRNO == UDP_SOCKET_TIMEOUT)
continue; /* Timeout */
DBG2((g_log,DLEV,"recvfrom failed with %d\n",ERRNO))
free_ccids(*ids);
*ids = NULL;
return 1;
}
DBG2((g_log,DLEVP1,"Got mDNS message length %d bytes\n",size))
#ifdef DEBUG
adump_bytes(g_log, " ", achInBuf, 0, size);
#endif
if (parse_dns(&name, &ip, &typ, &caflags, achInBuf, size) != 0) {
DBG((g_log,0,"Failed to parse the reply\n"))
} else {
DBG((g_log,0,"Parsed reply OK\n"))
/* If we found an entry */
if (name != NULL && ip != NULL) {
DBG((g_log,0,"Got a name '%s', IP '%s', type %s\n",name,ip, cctype2str(typ)))
/* Check if it is a Chromecast-Audio or Other */
if (typ == cctyp_Audio
|| typ == cctyp_Other) {
DBG((g_log,0,"Ignoring Chromecast-Audio/Other\n"))
free(name);
free(ip);
} else {
/* Check if it is a duplcate */
for (i = 0; i < *nids; i++) {
if (strcmp((*ids)[i]->name, name) == 0
&& strcmp((*ids)[i]->ip, ip) == 0)
break; /* yes */
}
if (i < *nids) {
DBG((g_log,0,"Duplicate\n"))
free(name);
free(ip);
} else {
ccast_id **tids;
if ((tids = realloc(*ids, (*nids + 2) * sizeof(ccast_id *))) == NULL
|| (*ids = tids, (*ids)[*nids] = malloc(sizeof(ccast_id)), (*ids)[*nids]) == NULL) {
DBG((g_log,0,"realloc/malloc fail\n"))
free(name);
free(ip);
free_ccids(*ids);
*ids = NULL;
return 1;
} else {
DBG((g_log,0,"Adding entry\n"))
(*ids)[*nids]->name = name;
(*ids)[*nids]->ip = ip;
(*ids)[*nids]->typ = typ;
(*nids)++;
(*ids)[*nids] = NULL; /* End marker */
}
}
}
}
}
}
DBG2((g_log,DLEVP1,"receive_mDNS() returning %d in list\n",*nids))
return 0;
}
/* ==================================================================== */
/* Get a list of Video output capable Chromecasts. Return NULL on error */
/* Last pointer in array is NULL */
/* Takes 1.5 second to return */
ccast_id **get_ccids() {
ccast_id **ids = NULL;
int nids = 0;
int i, j, k;
unsigned int smsec;
int waittime = 200;
SOCKET sock;
DBG2((g_log,DLEV,"get_ccids: called\n"))
if (init_mDNS()) {
DBG2((g_log,0,"get_ccids: init_mDNS() failed\n"))
return NULL;
}
if (init_socket_mDNS(&sock)) {
DBG2((g_log,0,"get_ccids: init_socket_mDNS() failed\n"))
return NULL;
}
smsec = msec_time();
/* Try a few times, with increasing response wait time */
for (k = 1;
((msec_time() - smsec) < 700)
|| (nids == 0 && (msec_time() - smsec) < 1600);
k++) {
DBG2((g_log,DLEV,"get_ccids: Sending mDNS query #%d:\n",k))
if (send_mDNS(sock)) {
DBG2((g_log,0,"get_ccids: send_mDNS() #1 failed\n"))
closesocket(sock);
return NULL;
}
DBG2((g_log,DLEV,"get_ccids: Waiting for mDNS reply #%d:\n",k))
if (receive_mDNS(sock, &ids, &nids, waittime)) {
DBG2((g_log,0,"get_ccids: receive_mDNS() #%d failed\n",k))
closesocket(sock);
return NULL;
}
DBG2((g_log,DLEV,"get_ccids: have %d %s\n",nids, nids == 1 ? "reply" : "replies"))
if (waittime < 500)
waittime = 500;
}
closesocket(sock);
/* If no ChromCasts found, return an empty list */
if (ids == NULL) {
DBG2((g_log,DLEV,"get_ccids: no devices found\n"))
if ((ids = calloc(sizeof(ccast_id *), 1)) == NULL) {
DBG2((g_log,0,"get_ccids: calloc fail\n"))
return NULL;
}
}
/* Sort the results so that it is stable */
for (i = 0; ids[i] != NULL && ids[i+1] != NULL; i++) {
for (j = i+1; ids[j] != NULL; j++) {
if (strcmp(ids[i]->name, ids[j]->name) > 0) {
ccast_id *tmp;
tmp = ids[i];
ids[i] = ids[j];
ids[j] = tmp;
}
}
}
for (i = 0; ids[i] != NULL; i++) {
DBG2((g_log,DLEV," Entry %d:\n",i))
DBG2((g_log,DLEV," Name: %s\n",ids[i]->name))
DBG2((g_log,DLEV," IP: %s\n",ids[i]->ip))
DBG2((g_log,DLEV," Type: %s\n",cctype2str(ids[i]->typ)))
}
DBG2((g_log,DLEV,"get_ccids: Returning %d devices\n",i))
return ids;
}
void ccast_id_copy(ccast_id *dst, ccast_id *src) {
dst->name = strdup(src->name);
dst->ip = strdup(src->ip);
}
ccast_id *ccast_id_clone(ccast_id *src) {
ccast_id *dst;
if ((dst = calloc(sizeof(ccast_id), 1)) == NULL)
return dst;
if (src->name != NULL && (dst->name = strdup(src->name)) == NULL) {
free(dst);
return NULL;
}
if (src->ip != NULL && (dst->ip = strdup(src->ip)) == NULL) {
free(dst->name);
free(dst);
return NULL;
}
return dst;
}
void ccast_id_del(ccast_id *id) {
free(id->name);
free(id->ip);
free(id);
}
/* ==================================================================== */
/* Read a string with a trailing '.' added. */
/* Return the next offset or -1 and *rv = NULL on error */
static int read_string_imp(char **rv, int *slen, ORD8 *buf, int off, int size, int rec) {
int len;
int d1 = 0;
DBG((g_log,8,"read_string_imp called for off %d (0x%x) rec %d\n",off,off,rec));
if (rec > 10) { /* Too many recursions */
DBG((g_log,8,"read_string_imp too many recursions\n"));
return -1; /* Error */
}
if (off >= size) {
DBG((g_log,8,"read_string_imp off %d >= size %d\n",off,size));
return -1; /* Error */
}
for (;;) {
DBG((g_log,8,"top of loop at off %d\n",off));
len = buf[off];
if ((len & 0xc0) == 0xc0) { /* Is it an offset marker */
int poff;
DBG((g_log,8,"got pointer\n"));
if ((size - off) < 2) {
DBG((g_log,8,"read_string_imp size %d - off %d < 2\n",size,off));
return -1;
}
poff = read_ORD16_be(buf + off); off += 2;
poff -= 0xc000;
if (poff < 0 || poff >= size) {
return -1;
}
DBG((g_log,8,"read_string_imp recursing\n"));
read_string_imp(rv, slen, buf, poff, size, rec+1);
if (slen != NULL) {
DBG((g_log,8,"after recurse, slen = %d, off = %d (0x%x)\n",*slen,off,off));
}
break; /* we're done */
} else {
DBG((g_log,8,"got string length %d\n",len));
off++;
if ((off + len) >= size) {
DBG((g_log,8,"read_string_imp size off %d + len %d >= size %d\n",off,len,size));
return -1;
}
if (len == 0) {
DBG((g_log,8,"read_string_imp len == 0 - done\n"));
break; /* we're done */
}
if (rv != NULL) {
memcpy(*rv, buf + off, len);
#ifdef DEBUG
(*rv)[len] = '\000';
DBG((g_log,8,"Copied string %p = '%s'\n",*rv,*rv));
#endif
*rv += len;
}
off += len;
if (slen != NULL) {
(*slen) += len;
DBG((g_log,8,"slen now = %d\n",*slen));
}
}
d1 = 1;
if (slen != NULL) {
(*slen)++;
}
if (rv != NULL) {
(*rv)[0] = '.';
(*rv)++;
}
}
if (slen != NULL) {
DBG((g_log,8,"returning slen = %d\n",*slen));
}
return off;
}
/* Read a string */
/* Return the next offset or -1 and *rv = NULL on error */
static int read_string(char **rv, ORD8 *buf, int off, int size) {
int len = 0, toff = off;
char *trv;
DBG((g_log,7,"read_string called for off 0x%x\n",off));
/* See how long it will be */
if ((toff = read_string_imp(NULL, &len, buf, off, size, 0)) < 0) {
DBG((g_log,7,"read_string_imp length returned error\n"));
return toff;
}
DBG((g_log,7,"read_string_imp got length %d\n",len));
if (len == 0) {
DBG((g_log,7,"Got zero length string\n"));
len++; /* Room for null string */
}
if ((*rv = trv = malloc(len)) == NULL) {
DBG((g_log,7,"malloc for string failed\n"));
return -1;
}
DBG((g_log,7,"loced %p\n",*rv));
off = read_string_imp(&trv, NULL, buf, off, size, 0);
if (off >= 0) {
(*rv)[len-1] = '\000';
DBG((g_log,7,"read string ok: %p = '%s'\n",*rv, *rv));
} else {
DBG((g_log,7,"reading string failed\n"));
}
return off;
}
/* Parse an mDNS query */
/* Return updated off value or -1 on error */
int parse_query(ORD8 *buf, int off, int size) {
char *sv;
int qtype, qclass;
DBG((g_log,0,"Parsing query at 0x%x:\n",off))
if ((off = read_string(&sv, buf, off, size)) < 0)
return -1;
DBG((g_log,0," Got string '%s'\n",sv))
free(sv);
if ((size - off) < 2)
return -1;
qtype = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," QTYPE = 0x%04x\n",qtype))
if ((size - off) < 2)
return -1;
qclass = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," QCLASS = 0x%04x\n",qtype))
return off;
}
/* Parse an mDNS reply, and set Friendly name (if known) + formal name + IP */
/* Return updated off value or -1 on error */
int parse_reply(char **pname, char **pip, cctype *ptyp, int *pcaflags, ORD8 *buf, int off, int size) {
char *sv;
int rtype, rclass, rdlength;
unsigned int ttl;
DBG((g_log,0,"Parsing reply at 0x%x:\n",off))
if ((off = read_string(&sv, buf, off, size)) < 0)
return -1;
DBG((g_log,0," Got string '%s', now off = 0x%x\n",sv,off))
if ((size - off) < 2) {
free(sv);
return -1;
}
rtype = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," RTYPE = %d, now off = 0x%x\n",rtype,off))
if ((size - off) < 2) {
free(sv);
return -1;
}
rclass = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," RCLASS = 0x%04x, now off = 0x%x\n",rclass,off))
/* rclass top bit is cache flush bit */
if ((rclass & 0x7fff) != DNS_CLASS_IN) {
DBG((g_log,0," response has RCLASS != 0x%04x\n",DNS_CLASS_IN))
free(sv);
return -1;
}
if ((size - off) < 4)
return -1;
ttl = read_ORD32_be(buf + off); off += 4;
DBG((g_log,0," TTL = %u, now off = 0x%x\n",ttl,off))
if ((size - off) < 2)
return -1;
rdlength = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," RDLENGTH = %d, now off = 0x%x\n",rdlength,off))
if ((off + rdlength) > size) {
DBG((g_log,0," response RDLENGTH is longer than remaining buffer (%d)\n",size - off))
free(sv);
return -1;
}
/* Just decode the replies we need */
if (rtype == DNS_TYPE_TXT) { /* Check it's a ChromeCast & get its name */
char *cp, *fn = NULL;
int rdsize = off + rdlength;
int caflags = 0;
if ((cp = strchr(sv, '.')) == NULL) {
free(sv);
return -1;
}
*cp = '\000';
if (strcmp(cp+1, "_googlecast._tcp.local") != 0) {
DBG((g_log,0,"Not a chromecast (got '%s')\n",cp+1))
free(sv);
return -1;
}
#ifdef NEVER
DBG((g_log,0," TXT data:\n"))
adump_bytes(g_log, " ", buf + off, 0, rdlength);
#endif
/* Chromecast TXT DATA format:
Buffer is series of strings, each beginning with a byte length.
Each string is id=value, with the following known values:
id=c17a8e82ee7187d5013e2d12c61bbd40 uuidNoHyphens
rm=669B9448366A01CB
ve=05 SW version ????
md=Chromecast Model ?
i.e. Chromecast-Audio
i.e. Chromecast-Ultra
i.e. Group
ic=/setup/icon.png Icon file ??
fn=Chromecast6892 Friendly name
ca=4101 Capabilities bits ???
st=1 Application running ??
bs=FA8FCA566645 Application ID ??
rs=Pattern generator ready Application state ??
*/
/* Parse the Chromacast TX Data */
for (; off < rdsize; ) {
int slen;
char *ss;
/* Read the string length */
if ((rdsize - off) < 1)
goto done_tx;
slen = read_ORD8(buf + off); off += 1;
if ((rdsize - off) < slen)
goto done_tx;
if ((ss = malloc(slen + 1)) == NULL) {
DBG((g_log,0,"malloc for sub-string failed\n"));
return -1;
}
memcpy(ss, buf + off, slen);
ss[slen] = '\000';
off += slen;
DBG((g_log,0," TX Sub-string '%s'\n", ss))
/* Record info we want: */
if (strncmp(ss, "fn=", 3) == 0) { /* Friendly name */
if ((fn = malloc(slen -3 +1)) == NULL) {
DBG((g_log,0,"malloc for fn-string failed\n"));
return -1;
}
strcpy(fn, ss + 3);
}
if (strncmp(ss, "ca=", 3) == 0) { /* Capability bits ? */
caflags = atoi(ss + 3);
}
free(ss);
}
done_tx:
if (fn != NULL) {
DBG((g_log,0," Chromacast '%s', fn '%s'\n", sv, fn))
} else {
DBG((g_log,0," Chromacast '%s'\n", sv))
}
DBG2((g_log,DLEV,"ca bits 0x%x\n", caflags))
if (strncmp(sv, "Chromecast-Ultra", 16) == 0) {
*ptyp = cctyp_Ultra;
} else if (strncmp(sv, "Chromecast-Audio", 16) == 0) {
*ptyp = cctyp_Audio;
} else {
// Hmm. A CC1 or non-Google device.
/* We're guessing that bit 0 of the ca bits == Video capable */
/* and bit 1 of the ca bits == Audio capable */
if (caflags & 1)
*ptyp = cctyp_1;
else if (caflags & 4)
*ptyp = cctyp_Audio;
else
*ptyp = cctyp_Other;
}
if (fn != NULL) {
*pname = fn;
} else {
free(fn);
if ((*pname = strdup(sv)) == NULL) {
DBG((g_log,0,"strdup failed\n"))
free(sv);
return -1;
}
}
off = rdsize;
} else if (rtype == DNS_TYPE_A) {
/* Should we check name matches ? */
if ((*pip = malloc(3 * 4 + 3 + 1)) == NULL) {
DBG((g_log,0,"malloc failed\n"))
free(*pname);
free(sv);
}
sprintf(*pip, "%d.%d.%d.%d", buf[off], buf[off+1], buf[off+2], buf[off+3]);
DBG((g_log,0," V4 address = %s\n",*pip))
off += rdlength;
} else if (rtype == DNS_TYPE_AAAA) { /* The IPV6 address */
/* Should we check name matches ? */
if ((*pip = malloc(8 * 4 + 7 + 1)) == NULL) {
DBG((g_log,0,"malloc failed\n"))
free(*pname);
free(sv);
}
sprintf(*pip, "%x:%x:%x:%x:%x:%x:%x:%x",
buf[off+0] * 245 + buf[off+1],
buf[off+2] * 245 + buf[off+3],
buf[off+4] * 245 + buf[off+5],
buf[off+6] * 245 + buf[off+7],
buf[off+8] * 245 + buf[off+9],
buf[off+10] * 245 + buf[off+11],
buf[off+12] * 245 + buf[off+13],
buf[off+14] * 245 + buf[off+15]);
DBG((g_log,0," V6 address = %s\n",*pip))
off += rdlength;
} else {
DBG((g_log,0," Skipping reply at 0x%x\n",off))
off += rdlength;
}
free(sv);
return off;
}
/* Parse an mDNS reply into a ChromCast name & IP address */
/* Allocate and return name and IP on finding ChromeCast reply, NULL otherwise */
/* Return nz on failure */
static int parse_dns(char **pname, char **pip, cctype *ptyp, int *pcaflags, ORD8 *buf, int size) {
int i, off = 0;
int id, flags, qdcount, ancount, nscount, arcount;
DBG((g_log,0,"Parsing mDNS reply:\n"))
*pname = NULL;
*pip = NULL;
// Parse reply header
if ((size - off) < 2) return 1;
id = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," ID = %d\n",id))
if ((size - off) < 2) return 1;
flags = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," FLAGS = 0x%04x\n",flags))
if ((size - off) < 2) return 1;
qdcount = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," QDCOUNT = %d\n",qdcount))
if ((size - off) < 2) return 1;
ancount = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," ANCOUNT = %d\n",ancount))
if ((size - off) < 2) return 1;
nscount = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," NSCOUNT = %d\n",nscount))
if ((size - off) < 2) return 1;
arcount = read_ORD16_be(buf + off); off += 2;
DBG((g_log,0," ARCOUNT = %d\n",arcount))
//printf("~1 after strings, off = 0x%x\n",off);
// Parse all the queries (QDCOUNT)
for (i = 0; i < qdcount; i++) {
if ((off = parse_query(buf, off, size)) < 0) {
DBG((g_log,0," ### Parsing query failed ###\n"))
return 1;
}
}
// Parse all the answers (ANCOUNT)
for (i = 0; i < ancount; i++) {
if ((off = parse_reply(pname, pip, ptyp, pcaflags, buf, off, size)) < 0) {
DBG((g_log,0," ### Parsing answer failed ###\n"))
return 1;
}
}
// Parse all the NS records (NSCOUNT)
for (i = 0; i < nscount; i++) {
if ((off = parse_reply(pname, pip, ptyp, pcaflags, buf, off, size)) < 0) {
DBG((g_log,0," ### Parsing NS record failed ###\n"))
return 1;
}
}
// Parse all the addition RR answers (ARCOUNT)
for (i = 0; i < arcount; i++) {
if ((off = parse_reply(pname, pip, ptyp, pcaflags, buf, off, size)) < 0) {
DBG((g_log,0," ### Parsing additional records failed ###\n"))
return 1;
}
}
return 0;
}
/*
Analysis of ChromeCast reply
0000: 00 00 84 00 00 00 00 01 00 00 00 05 0b 5f 67 6f ............._go
ID 0x0000 // ID 0
Flags 0x8400 // Standard query response, No error
QDCOUNT 0x0000 // No queries
ANCOUNT 0x0001 // 1 Answer
NSCOUNT 0x0000
ARCOUNT 0x0005 // 5 Additional records
// Answer
0b 5f 67 6f _go
0010: 6f 67 6c 65 63 61 73 74 oglecast
0010: 04 5f 74 63 70 _tcp
0010: 05 6c 6f lo
0020: 63 61 6c 00 cal.
"_googlecast" "_tcp" "cal" "" //TLD
0020: 00 0c 00 01 00 00 11 94 00 11 0e 43 ...........C
RTYPE 0x000c
RCLASS 0x0001
TTL 0x00001194
RDLENGTH 0x0011
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
/*
.ca values:
Original CC 5 = 0x0005
Latest CC1 4101 = 0x1005
Latest CC2 4101 = 0x1005
Latest CC3 4101 = 0x1005
Vizio TV 2053 = 0x0805
Toshiba TV 4101 = 0x1005
Audio CC 4100 = 0x1004
Sound bar 2052 = 0x0804
Google documents the following Capability strings:
VIDEO_OUT The receiver supports video output.
VIDEO_IN The receiver supports video input (camera).
AUDIO_OUT The receiver supports audio output.
AUDIO_IN The receiver supports audio input (microphone).
MULTIZONE_GROUP The receiver represents a multi-zone group.
Which may correspond to ca bits 0, 1, 2, 3 respectively ?
*/
/*
Original CC 1 dump ?
0000: 00 00 84 00 00 00 00 01 00 00 00 05 0b 5f 67 6f ............._go
0010: 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f oglecast._tcp.lo
0020: 63 61 6c 00 00 0c 00 01 00 00 11 94 00 11 0e 43 cal............C
0030: 68 72 6f 6d 65 63 61 73 74 36 38 39 32 c0 0c c0 hromecast6892...
0040: 2e 00 10 80 01 00 00 11 94 00 67 23 69 64 3d 63 ..........g#id=c
0050: 31 37 61 65 38 38 32 65 37 65 31 38 37 35 64 30 17ae882e7e1875d0
0060: 31 33 65 64 32 31 32 63 31 36 62 62 64 34 30 05 13ed212c16bbd40.
0070: 76 65 3d 30 32 0d 6d 64 3d 43 68 72 6f 6d 65 63 ve=02.md=Chromec
0080: 61 73 74 12 69 63 3d 2f 73 65 74 75 70 2f 69 63 ast.ic=/setup/ic
0090: 6f 6e 2e 70 6e 67 11 66 6e 3d 43 68 72 6f 6d 65 on.png.fn=Chrome
00a0: 63 61 73 74 36 38 39 32 04 63 61 3d 35 04 73 74 cast6892.ca=5.st
00b0: 3d 30 c0 2e 00 21 80 01 00 00 00 78 00 17 00 00 =0...!.....x....
00c0: 00 00 1f 49 0e 43 68 72 6f 6d 65 63 61 73 74 36 ...I.Chromecast6
00d0: 38 39 32 c0 1d c0 c4 00 01 80 01 00 00 00 78 00 892...........x.
00e0: 04 0a 00 00 80 c0 2e 00 2f 80 01 00 00 11 94 00 ......../.......
00f0: 09 c0 2e 00 05 00 00 80 00 40 c0 c4 00 2f 80 01 .........@.../..
0100: 00 00 00 78 00 05 c0 c4 00 01 40 ...x......@
*/
/*
ChromeCast 1 dump
0000: 00 00 84 00 00 00 00 01 00 00 00 03 0b 5f 67 6f ............._go
0010: 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f oglecast._tcp.lo
0020: 63 61 6c 00 00 0c 00 01 00 00 00 78 00 44 2b 43 cal........x.D+C
0030: 68 72 6f 6d 65 63 61 73 74 2d 63 31 37 61 65 38 hromecast-c17ae8
0040: 38 32 65 37 65 31 38 37 35 64 30 31 33 65 64 32 82e7e1875d013ed2
0050: 31 32 63 31 36 62 62 64 34 30 0b 5f 67 6f 6f 67 12c16bbd40._goog
0060: 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f 63 61 lecast._tcp.loca
0070: 6c 00 2b 43 68 72 6f 6d 65 63 61 73 74 2d 63 31 l.+Chromecast-c1
0080: 37 61 65 38 38 32 65 37 65 31 38 37 35 64 30 31 7ae882e7e1875d01
0090: 33 65 64 32 31 32 63 31 36 62 62 64 34 30 0b 5f 3ed212c16bbd40._
00a0: 67 6f 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 googlecast._tcp.
00b0: 6c 6f 63 61 6c 00 00 10 80 01 00 00 11 94 00 82 local...........
00c0: 23 69 64 3d 63 31 37 61 65 38 38 32 65 37 65 31 #id=c17ae882e7e1
00d0: 38 37 35 64 30 31 33 65 64 32 31 32 63 31 36 62 875d013ed212c16b
00e0: 62 64 34 30 03 72 6d 3d 05 76 65 3d 30 35 0d 6d bd40.rm=.ve=05.m
00f0: 64 3d 43 68 72 6f 6d 65 63 61 73 74 12 69 63 3d d=Chromecast.ic=
0100: 2f 73 65 74 75 70 2f 69 63 6f 6e 2e 70 6e 67 11 /setup/icon.png.
0110: 66 6e 3d 43 68 72 6f 6d 65 63 61 73 74 36 38 39 fn=Chromecast689
0120: 32 07 63 61 3d 34 31 30 31 04 73 74 3d 30 0f 62 2.ca=4101.st=0.b
0130: 73 3d 46 41 38 46 43 41 35 36 36 36 34 35 03 72 s=FA8FCA566645.r
0140: 73 3d 2b 43 68 72 6f 6d 65 63 61 73 74 2d 63 31 s=+Chromecast-c1
0150: 37 61 65 38 38 32 65 37 65 31 38 37 35 64 30 31 7ae882e7e1875d01
0160: 33 65 64 32 31 32 63 31 36 62 62 64 34 30 0b 5f 3ed212c16bbd40._
0170: 67 6f 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 googlecast._tcp.
0180: 6c 6f 63 61 6c 00 00 21 80 01 00 00 00 78 00 32 local..!.....x.2
0190: 00 00 00 00 1f 49 24 63 31 37 61 65 38 38 32 2d .....I$c17ae882-
01a0: 65 37 65 31 2d 38 37 35 64 2d 30 31 33 65 2d 64 e7e1-875d-013e-d
01b0: 32 31 32 63 31 36 62 62 64 34 30 05 6c 6f 63 61 212c16bbd40.loca
01c0: 6c 00 24 63 31 37 61 65 38 38 32 2d 65 37 65 31 l.$c17ae882-e7e1
01d0: 2d 38 37 35 64 2d 30 31 33 65 2d 64 32 31 32 63 -875d-013e-d212c
01e0: 31 36 62 62 64 34 30 05 6c 6f 63 61 6c 00 00 01 16bbd40.local...
01f0: 80 01 00 00 00 78 00 04 c0 a8 01 68 .....x.....h
ChromeCast 2 dump:
0000: 00 00 84 00 00 00 00 01 00 00 00 03 0b 5f 67 6f ............._go
0010: 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f oglecast._tcp.lo
0020: 63 61 6c 00 00 0c 00 01 00 00 00 78 00 44 2b 43 cal........x.D+C
0030: 68 72 6f 6d 65 63 61 73 74 2d 38 32 38 30 30 66 hromecast-82800f
0040: 65 63 33 37 37 36 35 39 38 66 35 38 64 34 61 61 ec3776598f58d4aa
0050: 63 39 65 36 35 64 30 30 30 61 0b 5f 67 6f 6f 67 c9e65d000a._goog
0060: 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f 63 61 lecast._tcp.loca
0070: 6c 00 2b 43 68 72 6f 6d 65 63 61 73 74 2d 38 32 l.+Chromecast-82
0080: 38 30 30 66 65 63 33 37 37 36 35 39 38 66 35 38 800fec3776598f58
0090: 64 34 61 61 63 39 65 36 35 64 30 30 30 61 0b 5f d4aac9e65d000a._
00a0: 67 6f 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 googlecast._tcp.
00b0: 6c 6f 63 61 6c 00 00 10 80 01 00 00 11 94 00 a9 local...........
00c0: 23 69 64 3d 38 32 38 30 30 66 65 63 33 37 37 36 #id=82800fec3776
00d0: 35 39 38 66 35 38 64 34 61 61 63 39 65 36 35 64 598f58d4aac9e65d
00e0: 30 30 30 61 13 72 6d 3d 36 36 39 42 39 34 34 38 000a.rm=669B9448
00f0: 36 33 36 30 41 31 43 42 05 76 65 3d 30 35 0d 6d 6360A1CB.ve=05.m
0100: 64 3d 43 68 72 6f 6d 65 63 61 73 74 12 69 63 3d d=Chromecast.ic=
0110: 2f 73 65 74 75 70 2f 69 63 6f 6e 2e 70 6e 67 11 /setup/icon.png.
0120: 66 6e 3d 43 68 72 6f 6d 65 63 61 73 74 36 35 30 fn=Chromecast650
0130: 32 07 63 61 3d 34 31 30 31 04 73 74 3d 31 0f 62 2.ca=4101.st=1.b
0140: 73 3d 46 41 38 46 43 41 39 45 33 45 30 31 1a 72 s=FA8FCA9E3E01.r
0150: 73 3d 50 61 74 74 65 72 6e 20 67 65 6e 65 72 61 s=Pattern genera
0160: 74 6f 72 20 72 65 61 64 79 2b 43 68 72 6f 6d 65 tor ready+Chrome
0170: 63 61 73 74 2d 38 32 38 30 30 66 65 63 33 37 37 cast-82800fec377
0180: 36 35 39 38 66 35 38 64 34 61 61 63 39 65 36 35 6598f58d4aac9e65
0190: 64 30 30 30 61 0b 5f 67 6f 6f 67 6c 65 63 61 73 d000a._googlecas
01a0: 74 04 5f 74 63 70 05 6c 6f 63 61 6c 00 00 21 80 t._tcp.local..!.
01b0: 01 00 00 00 78 00 32 00 00 00 00 1f 49 24 38 32 ....x.2.....I$82
01c0: 38 30 30 66 65 63 2d 33 37 37 36 2d 35 39 38 66 800fec-3776-598f
01d0: 2d 35 38 64 34 2d 61 61 63 39 65 36 35 64 30 30 -58d4-aac9e65d00
01e0: 30 61 05 6c 6f 63 61 6c 00 24 38 32 38 30 30 66 0a.local.$82800f
01f0: 65 63 2d 33 37 37 36 2d 35 39 38 66 2d 35 38 64 ec-3776-598f-58d
0200: 34 2d 61 61 63 39 65 36 35 64 30 30 30 61 05 6c 4-aac9e65d000a.l
0210: 6f 63 61 6c 00 00 01 80 01 00 00 00 78 00 04 0a ocal........x...
0220: 00 00 80 ...
ChromeCast 3 (Ultra)
0000: 00 00 84 00 00 00 00 01 00 00 00 03 0b 5f 67 6f ............._go
0010: 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f oglecast._tcp.lo
0020: 63 61 6c 00 00 0c 00 01 00 00 00 78 00 34 31 43 cal........x.41C
0030: 68 72 6f 6d 65 63 61 73 74 2d 55 6c 74 72 61 2d hromecast-Ultra-
0040: 32 38 36 65 36 63 63 65 38 34 65 32 38 65 61 33 286e6cce84e28ea3
0050: 36 63 37 63 33 31 39 32 66 33 35 62 65 30 33 65 6c7c3192f35be03e
0060: c0 0c c0 2e 00 10 80 01 00 00 11 94 00 8d 23 69 ..............#i
0070: 64 3d 32 38 36 65 36 63 63 65 38 34 65 32 38 65 d=286e6cce84e28e
0080: 61 33 36 63 37 63 33 31 39 32 66 33 35 62 65 30 a36c7c3192f35be0
0090: 33 65 03 72 6d 3d 05 76 65 3d 30 35 13 6d 64 3d 3e.rm=.ve=05.md=
00a0: 43 68 72 6f 6d 65 63 61 73 74 20 55 6c 74 72 61 Chromecast Ultra
00b0: 12 69 63 3d 2f 73 65 74 75 70 2f 69 63 6f 6e 2e .ic=/setup/icon.
00c0: 70 6e 67 16 66 6e 3d 43 68 72 6f 6d 65 63 61 73 png.fn=Chromecas
00d0: 74 55 6c 74 72 61 36 32 35 30 07 63 61 3d 34 31 tUltra6250.ca=41
00e0: 30 31 04 73 74 3d 30 0f 62 73 3d 46 41 38 46 43 01.st=0.bs=FA8FC
00f0: 41 37 30 38 35 42 35 03 72 73 3d c0 2e 00 21 80 A7085B5.rs=...!.
0100: 01 00 00 00 78 00 2d 00 00 00 00 1f 49 24 32 38 ....x.-.....I$28
0110: 36 65 36 63 63 65 2d 38 34 65 32 2d 38 65 61 33 6e6cce-84e2-8ea3
0120: 2d 36 63 37 63 2d 33 31 39 32 66 33 35 62 65 30 -6c7c-3192f35be0
0130: 33 65 c0 1d c1 0d 00 01 80 01 00 00 00 78 00 04 3e...........x..
0140: 0a 00 01 1d ....
*/
/* Other non-Google devices:
Vizio M60-D1 :- Smart TV
00000000 00 00 84 00 00 00 00 01 00 00 00 03 0b 5f 67 6f |............._go|
00000010 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f |oglecast._tcp.lo|
00000020 63 61 6c 00 00 0c 00 01 00 00 00 78 00 40 27 4d |cal........x.@'M|
00000030 36 30 2d 44 31 2d 37 63 35 35 36 37 39 31 35 38 |60-D1-7c55679158|
00000040 38 64 63 64 33 37 63 37 37 32 33 31 61 30 64 64 |8dcd37c77231a0dd|
00000050 31 35 61 35 30 36 0b 5f 67 6f 6f 67 6c 65 63 61 |15a506._googleca|
00000060 73 74 04 5f 74 63 70 05 6c 6f 63 61 6c 00 27 4d |st._tcp.local.'M|
00000070 36 30 2d 44 31 2d 37 63 35 35 36 37 39 31 35 38 |60-D1-7c55679158|
00000080 38 64 63 64 33 37 63 37 37 32 33 31 61 30 64 64 |8dcd37c77231a0dd|
00000090 31 35 61 35 30 36 0b 5f 67 6f 6f 67 6c 65 63 61 |15a506._googleca|
000000a0 73 74 04 5f 74 63 70 05 6c 6f 63 61 6c 00 00 10 |st._tcp.local...|
000000b0 80 01 00 00 11 94 00 80 23 69 64 3d 37 63 35 35 |........#id=7c55|
000000c0 36 37 39 31 35 38 38 64 63 64 33 37 63 37 37 32 |6791588dcd37c772|
000000d0 33 31 61 30 64 64 31 35 61 35 30 36 13 72 6d 3d |31a0dd15a506.rm=|
000000e0 31 33 39 46 33 32 34 34 38 34 44 46 41 39 32 34 |139F324484DFA924|
000000f0 05 76 65 3d 30 35 09 6d 64 3d 4d 36 30 2d 44 31 |.ve=05.md=M60-D1|
00000100 12 69 63 3d 2f 73 65 74 75 70 2f 69 63 6f 6e 2e |.ic=/setup/icon.|
00000110 70 6e 67 0f 66 6e 3d 56 69 7a 69 6f 20 4d 36 30 |png.fn=Vizio M60|
00000120 2d 44 31 07 63 61 3d 32 30 35 33 04 73 74 3d 30 |-D1.ca=2053.st=0|
00000130 03 62 73 3d 03 72 73 3d 27 4d 36 30 2d 44 31 2d |.bs=.rs='M60-D1-|
00000140 37 63 35 35 36 37 39 31 35 38 38 64 63 64 33 37 |7c556791588dcd37|
00000150 63 37 37 32 33 31 61 30 64 64 31 35 61 35 30 36 |c77231a0dd15a506|
00000160 0b 5f 67 6f 6f 67 6c 65 63 61 73 74 04 5f 74 63 |._googlecast._tc|
00000170 70 05 6c 6f 63 61 6c 00 00 21 80 01 00 00 00 78 |p.local..!.....x|
00000180 00 32 00 00 00 00 1f 49 24 37 63 35 35 36 37 39 |.2.....I$7c55679|
00000190 31 2d 35 38 38 64 2d 63 64 33 37 2d 63 37 37 32 |1-588d-cd37-c772|
000001a0 2d 33 31 61 30 64 64 31 35 61 35 30 36 05 6c 6f |-31a0dd15a506.lo|
000001b0 63 61 6c 00 24 37 63 35 35 36 37 39 31 2d 35 38 |cal.$7c556791-58|
000001c0 38 64 2d 63 64 33 37 2d 63 37 37 32 2d 33 31 61 |8d-cd37-c772-31a|
000001d0 30 64 64 31 35 61 35 30 36 05 6c 6f 63 61 6c 00 |0dd15a506.local.|
000001e0 00 01 80 01 00 00 00 78 00 04 c0 a8 00 3e |.......x.....>|
000001ee
SmartCast Sound Bar 3851-D0 :- Sound bar
00000000 00 00 84 00 00 00 00 01 00 00 00 03 0b 5f 67 6f |............._go|
00000010 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f |oglecast._tcp.lo|
00000020 63 61 6c 00 00 0c 00 01 00 00 00 78 00 22 09 53 |cal........x.".S|
00000030 42 33 38 35 31 2d 44 30 0b 5f 67 6f 6f 67 6c 65 |B3851-D0._google|
00000040 63 61 73 74 04 5f 74 63 70 05 6c 6f 63 61 6c 00 |cast._tcp.local.|
00000050 09 53 42 33 38 35 31 2d 44 30 0b 5f 67 6f 6f 67 |.SB3851-D0._goog|
00000060 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f 63 61 |lecast._tcp.loca|
00000070 6c 00 00 10 80 01 00 00 11 94 00 8a 23 69 64 3d |l...........#id=|
00000080 64 35 36 63 33 66 30 39 36 66 30 31 30 31 36 66 |d56c3f096f01016f|
00000090 33 64 37 30 65 62 62 63 36 32 36 34 65 66 33 31 |3d70ebbc6264ef31|
000000a0 05 76 65 3d 30 34 1e 6d 64 3d 53 6d 61 72 74 43 |.ve=04.md=SmartC|
000000b0 61 73 74 20 53 6f 75 6e 64 20 42 61 72 20 33 38 |ast Sound Bar 38|
000000c0 35 31 2d 44 30 12 69 63 3d 2f 73 65 74 75 70 2f |51-D0.ic=/setup/|
000000d0 69 63 6f 6e 2e 70 6e 67 0c 66 6e 3d 53 42 33 38 |icon.png.fn=SB38|
000000e0 35 31 2d 44 30 07 63 61 3d 32 30 35 32 04 73 74 |51-D0.ca=2052.st|
000000f0 3d 30 0f 62 73 3d 46 46 46 46 46 46 46 46 46 46 |=0.bs=FFFFFFFFFF|
00000100 46 46 03 72 73 3d 09 53 42 33 38 35 31 2d 44 30 |FF.rs=.SB3851-D0|
00000110 0b 5f 67 6f 6f 67 6c 65 63 61 73 74 04 5f 74 63 |._googlecast._tc|
00000120 70 05 6c 6f 63 61 6c 00 00 21 80 01 00 00 00 78 |p.local..!.....x|
00000130 00 17 00 00 00 00 1f 49 09 53 42 33 38 35 31 2d |.......I.SB3851-|
00000140 44 30 05 6c 6f 63 61 6c 00 09 53 42 33 38 35 31 |D0.local..SB3851|
00000150 2d 44 30 05 6c 6f 63 61 6c 00 00 01 80 01 00 00 |-D0.local.......|
00000160 00 78 00 04 c0 a8 00 26 |.x.....&|
00000168
ZChromecast Toshiba :- TV ?
00000000 00 00 84 00 00 00 00 01 00 00 00 03 0b 5f 67 6f |............._go|
00000010 6f 67 6c 65 63 61 73 74 04 5f 74 63 70 05 6c 6f |oglecast._tcp.lo|
00000020 63 61 6c 00 00 0c 00 01 00 00 00 78 00 2e 2b 43 |cal........x..+C|
00000030 68 72 6f 6d 65 63 61 73 74 2d 64 61 30 33 34 62 |hromecast-da034b|
00000040 31 39 30 30 34 34 62 63 38 65 35 33 30 31 34 37 |190044bc8e530147|
00000050 63 37 61 65 33 32 63 35 61 33 c0 0c c0 2e 00 10 |c7ae32c5a3......|
00000060 80 01 00 00 11 94 00 87 23 69 64 3d 64 61 30 33 |........#id=da03|
00000070 34 62 31 39 30 30 34 34 62 63 38 65 35 33 30 31 |4b190044bc8e5301|
00000080 34 37 63 37 61 65 33 32 63 35 61 33 03 72 6d 3d |47c7ae32c5a3.rm=|
00000090 05 76 65 3d 30 35 0d 6d 64 3d 43 68 72 6f 6d 65 |.ve=05.md=Chrome|
000000a0 63 61 73 74 12 69 63 3d 2f 73 65 74 75 70 2f 69 |cast.ic=/setup/i|
000000b0 63 6f 6e 2e 70 6e 67 16 66 6e 3d 5a 43 68 72 6f |con.png.fn=ZChro|
000000c0 6d 65 63 61 73 74 20 54 6f 73 68 69 62 61 07 63 |mecast Toshiba.c|
000000d0 61 3d 34 31 30 31 04 73 74 3d 30 0f 62 73 3d 46 |a=4101.st=0.bs=F|
000000e0 41 38 46 43 41 37 30 32 30 36 32 03 72 73 3d c0 |A8FCA702062.rs=.|
000000f0 2e 00 21 80 01 00 00 00 78 00 2d 00 00 00 00 1f |..!.....x.-.....|
00000100 49 24 64 61 30 33 34 62 31 39 2d 30 30 34 34 2d |I$da034b19-0044-|
00000110 62 63 38 65 2d 35 33 30 31 2d 34 37 63 37 61 65 |bc8e-5301-47c7ae|
00000120 33 32 63 35 61 33 c0 1d c1 01 00 01 80 01 00 00 |32c5a3..........|
00000130 00 78 00 04 c0 a8 00 1b |.x......|
00000138
*/
/*
Can get info from Chromecast http server at http://XX.XX.XX.XX:8008/ssdp/device-desc.xml
Get info about the app running: http://XX.XX.XX.XX:8008/apps/ChromeCast
*/
|