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@ -613,7 +613,7 @@ static void * streamsync_worker( void * args ) {
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}
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/* Maximal memory requirement: max 3 blocks, max torrents * 20 + max peers * 7 */
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mem = 3 * ( 4 + 1 + 1 + 2 ) + ( count_one + count_two ) * 19 + count_def * 20 +
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mem = 3 * ( 4 + 1 + 1 + 2 ) + ( count_one + count_two ) * 19 + count_def * ( 19 + 6 ) +
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( count_one + 2 * count_two + count_peers ) * 7;
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fprintf( stderr, "Mem: %zd\n", mem );
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@ -621,7 +621,7 @@ static void * streamsync_worker( void * args ) {
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ptr = ptr_a = ptr_b = ptr_c = malloc( mem );
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if( !ptr ) goto unlock_continue;
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if( count_one > 8 ) {
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if( count_one > 8 || !count_def ) {
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mem_a = 4 + 1 + 1 + 2 + count_one * ( 19 + 7 );
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ptr_b += mem_a; ptr_c += mem_a;
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memcpy( ptr_a, &g_tracker_id, sizeof(g_tracker_id)); /* Offset 0: the tracker ID */
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@ -630,12 +630,10 @@ static void * streamsync_worker( void * args ) {
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ptr_a[6] = count_one >> 8;
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ptr_a[7] = count_one & 255;
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ptr_a += 8;
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} else {
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} else
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count_def += count_one;
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count_peers += count_one;
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}
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if( count_two > 8 ) {
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if( count_two > 8 || !count_def ) {
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mem_b = 4 + 1 + 1 + 2 + count_two * ( 19 + 14 );
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ptr_c += mem_b;
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memcpy( ptr_b, &g_tracker_id, sizeof(g_tracker_id)); /* Offset 0: the tracker ID */
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@ -644,10 +642,8 @@ static void * streamsync_worker( void * args ) {
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ptr_b[6] = count_two >> 8;
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ptr_b[7] = count_two & 255;
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ptr_b += 8;
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} else {
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} else
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count_def += count_two;
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count_peers += 2 * count_two;
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}
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if( count_def ) {
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memcpy( ptr_c, &g_tracker_id, sizeof(g_tracker_id)); /* Offset 0: the tracker ID */
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@ -665,26 +661,36 @@ static void * streamsync_worker( void * args ) {
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ot_peerlist *peer_list = torrent->peer_list;
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ot_peer *peers = (ot_peer*)(peer_list->peers.data);
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uint8_t **dst;
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int multi = 0;
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switch( peer_list->peer_count ) {
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/* Determine destination slot */
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count_peers = peer_list->peer_count;
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switch( count_peers ) {
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case 0: continue;
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case 1: dst = mem_a ? &ptr_a : &ptr_c; break;
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case 2: dst = mem_b ? &ptr_b : &ptr_c; break;
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default: dst = &ptr_c; multi = 1; break;
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default: dst = &ptr_c; break;
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}
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do {
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size_t i, pc = peer_list->peer_count;
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if( pc > 255 ) pc = 255;
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/* Copy tail of info_hash, advance pointer */
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memcpy( *dst, torrent->hash + 1, sizeof( ot_hash ) - 1);
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*dst += sizeof( ot_hash ) - 1;
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if( multi ) *(*dst)++ = pc;
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for( i=0; i < pc; ++i ) {
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/* Encode peer count */
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if( dst == &ptr_c )
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while( count_peers ) {
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if( count_peers <= 0x7f )
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*(*dst)++ = count_peers;
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else
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*(*dst)++ = 0x80 | ( count_peers & 0x7f );
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count_peers >>= 7;
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}
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/* Copy peers */
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count_peers = peer_list->peer_count;
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while( count_peers-- ) {
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memcpy( *dst, peers++, OT_IP_SIZE + 3 );
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*dst += OT_IP_SIZE + 3;
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}
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peer_list->peer_count -= pc;
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} while( peer_list->peer_count );
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free_peerlist(peer_list);
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}
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@ -735,18 +741,30 @@ void livesync_ticker( ) {
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}
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static void livesync_proxytell( uint8_t prefix, uint8_t *info_hash, uint8_t *peer ) {
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unsigned int i;
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*g_peerbuffer_pos = prefix;
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memcpy( g_peerbuffer_pos + 1, info_hash, sizeof(ot_hash) - 1 );
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memcpy( g_peerbuffer_pos + sizeof(ot_hash), peer, sizeof(ot_peer) - 1 );
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g_peerbuffer_pos += sizeof(ot_hash) + sizeof(ot_peer);
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/* Dump info_hash */
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for( i=0; i<sizeof(ot_hash); ++i )
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printf( "%02X", g_peerbuffer_pos[i] );
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putchar( ':' );
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g_peerbuffer_pos += sizeof(ot_hash);
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printf( "%d.%d.%d.%d:%hd (%02X %02X)\n", g_peerbuffer_pos[0], g_peerbuffer_pos[1], g_peerbuffer_pos[2], g_peerbuffer_pos[3],
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g_peerbuffer_pos[4] | ( g_peerbuffer_pos[5] << 8 ), g_peerbuffer_pos[6], g_peerbuffer_pos[7] );
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g_peerbuffer_pos += sizeof(ot_peer);
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if( g_peerbuffer_pos >= g_peerbuffer_highwater )
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livesync_issue_peersync();
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}
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static void process_indata( proxy_peer * peer ) {
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int ensuremem, consumed, peers;
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int consumed, peers;
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uint8_t *data = peer->indata, *hash;
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uint8_t *dataend = data + peer->indata_length;
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@ -760,21 +778,37 @@ static void process_indata( proxy_peer * peer ) {
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peer->packet_tprefix = data[5];
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peer->packet_tcount = data[6] * 256 + data[7];
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data += 8;
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printf( "type: %d, prefix: %02X, torrentcount: %d\n", peer->packet_type, peer->packet_tprefix, peer->packet_tcount );
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}
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/* ensure size for the complete torrent block */
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if( data + 26 > dataend ) break;
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peers = peer->packet_type ? peer->packet_type : data[19];
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ensuremem = 19 + ( peer->packet_type == 0 ) + 7 * peers;
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if( data + ensuremem > dataend ) break;
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next_torrent:
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/* Ensure size for the complete torrent block */
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if( data + sizeof(ot_hash) + OT_IP_SIZE + 3 > dataend ) break;
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/* Advance pointer to peer count or peers */
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hash = data;
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data += 19 + ( peer->packet_type == 0 );
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data += sizeof(ot_hash) - 1;
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/* Type 0 has peer count encoded before each peers */
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if( peer->packet_type == 0 ) {
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int shift = 0;
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peers = 0;
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do peers |= ( 0x7f & *data ) << ( 7 * shift );
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while ( *(data++) & 0x80 && shift++ < 6 );
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} else
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peers = peer->packet_type;
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/* Ensure enough data being read to hold all peers */
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if( data + 7 * peers > dataend ) break;
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printf( "peers: %d\n", peers );
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while( peers-- ) {
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livesync_proxytell( peer->packet_tprefix, hash, data );
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data += 7;
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data += OT_IP_SIZE + 3;
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}
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if( --peer->packet_tcount )
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goto next_torrent;
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}
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consumed = data - peer->indata;
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