* Add some preliminary code for the eventual possibility of TiVo support.
This commit is contained in:
Justin Maggard
293
tivo_beacon.c
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293
tivo_beacon.c
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/*
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* Linux/C based server for TiVo Home Media Option protocol
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*
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* Based on version 1.5.1 of
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* "TiVo Connect Automatic Machine; Discovery Protocol Specification"
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* Based on version 1.1.0 of
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* "TiVo Home Media Option; Music and Photos Server Protocol Specification"
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*
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* Dave Clemans, April 2003
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*
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* Copyright (C) 2003 Dave Clemans
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* See the file "COPYING" for more details.
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*/
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#ifdef ENABLE_TIVO
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/wait.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <time.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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#include <sys/poll.h>
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#include <netdb.h>
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#include "tivo_beacon.h"
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#include "upnpglobalvars.h"
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#include "log.h"
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static struct aBeacon* topBeacon = NULL;
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/* OpenAndConfHTTPSocket() :
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* setup the socket used to handle incoming HTTP connections. */
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int
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OpenAndConfTivoBeaconSocket()
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{
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int s;
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int i = 1;
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struct sockaddr_in beacon;
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if( (s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
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{
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DPRINTF(E_ERROR, L_TIVO, "socket(http): %s\n", strerror(errno));
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return -1;
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}
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if(setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i)) < 0)
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{
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DPRINTF(E_WARN, L_TIVO, "setsockopt(http, SO_REUSEADDR): %s\n", strerror(errno));
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}
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memset(&beacon, 0, sizeof(struct sockaddr_in));
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beacon.sin_family = AF_INET;
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beacon.sin_port = htons(2190);
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beacon.sin_addr.s_addr = htonl(INADDR_ANY);
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if(bind(s, (struct sockaddr *)&beacon, sizeof(struct sockaddr_in)) < 0)
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{
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DPRINTF(E_ERROR, L_TIVO, "bind(http): %s\n", strerror(errno));
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close(s);
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return -1;
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}
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i = 1;
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if(setsockopt(s, SOL_SOCKET, SO_BROADCAST, &i, sizeof(i)) < 0 )
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{
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DPRINTF(E_WARN, L_TIVO, "setsockopt(http, SO_BROADCAST): %s\n", strerror(errno));
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close(s);
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return -1;
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}
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return s;
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}
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/*
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* Returns the interface broadcast address to be used for beacons
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*/
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uint32_t getBcastAddress( void )
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{
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struct ifreq ifr;
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struct sockaddr_in *sin;
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int s, rval;
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static int ifacePrinted = 0;
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s = socket( AF_INET, SOCK_DGRAM, 0 );
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if ( s < 0 )
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{
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return INADDR_BROADCAST;
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}
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strcpy( ifr.ifr_name, "eth0" );
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rval = ioctl( s, SIOCGIFBRDADDR, &ifr );
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if ( rval < 0 )
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{
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close(s);
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return INADDR_BROADCAST;
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}
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sin = (struct sockaddr_in *)&ifr.ifr_broadaddr;
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if( !ifacePrinted )
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{
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printf( "Interface: %s broadcast addr %s \n", "eth0", inet_ntoa(sin->sin_addr) );
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ifacePrinted = 1;
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}
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close(s);
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return ntohl((uint32_t)(sin->sin_addr.s_addr));
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}
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/*
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* Send outgoing beacon to the specified address
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* This will either be a specific or broadcast address
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*/
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void
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sendBeaconMessage(int fd, struct sockaddr_in * client, int len, int broadcast)
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{
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char * mesg;
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int mesg_len;
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time_t now = time(NULL);
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mesg_len = asprintf(&mesg, "TiVoConnect=1\n"
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"swversion=%s\n"
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"method=%s\n"
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"identity=%s\n"
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"machine=%s\n"
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"platform=pc/minidlna\n"
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"services=TiVoMediaServer:%d/http\n",
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"1.0",
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broadcast ? "broadcast" : "connected",
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uuidvalue, friendly_name, runtime_vars.port);
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printf("Sending beacon at %s%s", ctime(&now), mesg);
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sendto(fd, mesg, mesg_len, 0, (struct sockaddr*)client, len);
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free(mesg);
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}
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/*
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* Parse and save a received beacon packet from another server, or from
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* a TiVo.
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*
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* Returns true if this was a broadcast beacon msg
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*/
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int
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rcvBeaconMessage(char * beacon)
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{
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char * tivoConnect = NULL;
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char * swVersion = NULL;
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char * method = NULL;
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char * identity = NULL;
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char * machine = NULL;
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char * platform = NULL;
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char * services = NULL;
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char * cp;
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char * scp;
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char * tokptr;
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struct aBeacon * b;
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int len;
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time_t current;
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char buf[32];
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static time_t lastSummary = 0;
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cp = strtok_r( beacon, "=\r\n", &tokptr );
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while( cp != NULL )
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{
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scp = cp;
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cp = strtok_r( NULL, "=\r\n", &tokptr );
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if( strcasecmp( scp, "tivoconnect" ) == 0 )
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tivoConnect = cp;
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else if( strcasecmp( scp, "swversion" ) == 0 )
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swVersion = cp;
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else if( strcasecmp( scp, "method" ) == 0 )
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method = cp;
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else if( strcasecmp( scp, "identity" ) == 0 )
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identity = cp;
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else if( strcasecmp( scp, "machine" ) == 0 )
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machine = cp;
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else if( strcasecmp( scp, "platform" ) == 0 )
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platform = cp;
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else if( strcasecmp( scp, "services" ) == 0 )
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services = cp;
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cp = strtok_r( NULL, "=\r\n", &tokptr );
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}
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if( tivoConnect == NULL )
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return 0;
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current = time( NULL );
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for( b = topBeacon; b != NULL; b = b->next )
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{
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if( strcasecmp( machine, b->machine ) == 0 ||
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strcasecmp( identity, b->identity ) == 0 )
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{
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break;
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}
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}
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if( b == NULL )
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{
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b = ( struct aBeacon* ) calloc( 1, sizeof( *b ) );
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b->next = NULL;
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if ( machine )
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{
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b->machine = ( char* ) malloc( strlen( machine ) + 1 );
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strcpy( b->machine, machine );
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}
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if ( identity )
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{
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b->identity = ( char* ) malloc( strlen( identity ) + 1 );
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strcpy( b->identity, identity );
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}
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if ( swVersion )
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{
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b->swversion = ( char* ) malloc( strlen( swVersion ) + 1 );
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strcpy( b->swversion, swVersion );
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}
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if ( method )
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{
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b->method = ( char* ) malloc( strlen( method ) + 1 );
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strcpy( b->method, method );
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}
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if ( platform )
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{
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b->platform = ( char* ) malloc( strlen( platform ) + 1 );
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strcpy( b->platform, platform );
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}
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if ( services )
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{
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b->services = ( char* ) malloc( strlen( services ) + 1 );
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strcpy( b->services, services );
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}
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b->next = topBeacon;
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topBeacon = b;
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printf( "Received new beacon: machine(%s) platform(%s) services(%s)\n",
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b->machine ? b->machine : "-",
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b->platform ? b->platform : "-",
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b->services ? b->services : "-" );
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}
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b->lastSeen = current;
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if( lastSummary == 0 )
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lastSummary = current;
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if( lastSummary + 1800 < current )
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{ /* Give a summary of received server beacons every half hour or so */
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len = 0;
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for( b = topBeacon; b != NULL; b = b->next )
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{
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len += strlen( b->machine ) + 32;
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}
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scp = ( char* ) malloc( len + 128 );
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strcpy( scp, "Known servers: " );
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for( b = topBeacon; b != NULL; b = b->next )
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{
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strcat( scp, b->machine );
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sprintf( buf, "(%ld)", current - b->lastSeen );
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strcat( scp, buf );
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if( b->next != NULL )
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strcat( scp, "," );
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}
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strcat(scp, "\n");
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printf("%s\n", scp);
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free(scp);
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lastSummary = current;
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}
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if( strcasecmp( method, "broadcast" ) == 0 )
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return 1;
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return 0;
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}
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#endif // ENABLE_TIVO
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