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@ -16,6 +16,7 @@
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#include "byte.h"
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#include "io.h"
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#include "iob.h"
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#include "ip6.h"
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#include "array.h"
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/* Opentracker */
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@ -57,25 +58,33 @@ void add_torrent_from_saved_state( ot_hash hash, ot_time base, size_t down_count
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return mutex_bucket_unlock_by_hash( hash, 0 );
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/* Create a new torrent entry, then */
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byte_zero( torrent, sizeof( ot_torrent ) );
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memcpy( torrent->hash, hash, sizeof(ot_hash) );
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if( !( torrent->peer_list = malloc( sizeof (ot_peerlist) ) ) ) {
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if( !( torrent->peer_list6 = malloc( sizeof (ot_peerlist) ) ) ||
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!( torrent->peer_list4 = malloc( sizeof (ot_peerlist) ) ) ) {
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vector_remove_torrent( torrents_list, torrent );
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return mutex_bucket_unlock_by_hash( hash, 0 );
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}
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byte_zero( torrent->peer_list, sizeof( ot_peerlist ) );
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torrent->peer_list->base = base;
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torrent->peer_list->down_count = down_count;
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byte_zero( torrent->peer_list6, sizeof( ot_peerlist ) );
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byte_zero( torrent->peer_list4, sizeof( ot_peerlist ) );
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torrent->peer_list6->base = base;
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torrent->peer_list4->base = base;
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torrent->peer_list6->down_count = down_count;
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torrent->peer_list4->down_count = down_count;
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return mutex_bucket_unlock_by_hash( hash, 1 );
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}
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size_t add_peer_to_torrent_and_return_peers( PROTO_FLAG proto, struct ot_workstruct *ws, size_t amount ) {
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int exactmatch, delta_torrentcount = 0;
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ot_torrent *torrent;
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ot_peer *peer_dest;
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ot_vector *torrents_list = mutex_bucket_lock_by_hash( *ws->hash );
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int exactmatch, delta_torrentcount = 0;
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ot_torrent *torrent;
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ot_peer *peer_dest;
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ot_vector *torrents_list = mutex_bucket_lock_by_hash( *ws->hash );
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ot_peerlist *peer_list;
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size_t peer_size; /* initialized in next line */
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ot_peer *peer_src = peer_from_peer6(&ws->peer, &peer_size);
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if( !accesslist_hashisvalid( *ws->hash ) ) {
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mutex_bucket_unlock_by_hash( *ws->hash, 0 );
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@ -95,82 +104,88 @@ size_t add_peer_to_torrent_and_return_peers( PROTO_FLAG proto, struct ot_workstr
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if( !exactmatch ) {
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/* Create a new torrent entry, then */
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byte_zero( torrent, sizeof(ot_torrent));
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memcpy( torrent->hash, *ws->hash, sizeof(ot_hash) );
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if( !( torrent->peer_list = malloc( sizeof (ot_peerlist) ) ) ) {
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if( !( torrent->peer_list6 = malloc( sizeof (ot_peerlist) ) ) ||
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!( torrent->peer_list4 = malloc( sizeof (ot_peerlist) ) ) ) {
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vector_remove_torrent( torrents_list, torrent );
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mutex_bucket_unlock_by_hash( *ws->hash, 0 );
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return 0;
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}
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byte_zero( torrent->peer_list, sizeof( ot_peerlist ) );
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byte_zero( torrent->peer_list6, sizeof( ot_peerlist ) );
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byte_zero( torrent->peer_list4, sizeof( ot_peerlist ) );
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delta_torrentcount = 1;
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} else
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clean_single_torrent( torrent );
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torrent->peer_list->base = g_now_minutes;
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torrent->peer_list6->base = g_now_minutes;
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torrent->peer_list4->base = g_now_minutes;
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peer_list = peer_size == OT_PEER_SIZE6 ? torrent->peer_list6 : torrent->peer_list4;
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/* Check for peer in torrent */
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peer_dest = vector_find_or_insert_peer( &(torrent->peer_list->peers), &ws->peer, &exactmatch );
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peer_dest = vector_find_or_insert_peer( &(peer_list->peers), peer_src, peer_size, &exactmatch );
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if( !peer_dest ) {
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mutex_bucket_unlock_by_hash( *ws->hash, delta_torrentcount );
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return 0;
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}
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/* Tell peer that it's fresh */
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OT_PEERTIME( &ws->peer ) = 0;
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OT_PEERTIME( ws->peer, OT_PEER_SIZE6 ) = 0;
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/* Sanitize flags: Whoever claims to have completed download, must be a seeder */
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if( ( OT_PEERFLAG( &ws->peer ) & ( PEER_FLAG_COMPLETED | PEER_FLAG_SEEDING ) ) == PEER_FLAG_COMPLETED )
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OT_PEERFLAG( &ws->peer ) ^= PEER_FLAG_COMPLETED;
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if( ( OT_PEERFLAG( ws->peer ) & ( PEER_FLAG_COMPLETED | PEER_FLAG_SEEDING ) ) == PEER_FLAG_COMPLETED )
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OT_PEERFLAG( ws->peer ) ^= PEER_FLAG_COMPLETED;
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/* If we hadn't had a match create peer there */
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if( !exactmatch ) {
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#ifdef WANT_SYNC_LIVE
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if( proto == FLAG_MCA )
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OT_PEERFLAG( &ws->peer ) |= PEER_FLAG_FROM_SYNC;
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OT_PEERFLAG( ws->peer ) |= PEER_FLAG_FROM_SYNC;
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else
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livesync_tell( ws );
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#endif
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torrent->peer_list->peer_count++;
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if( OT_PEERFLAG(&ws->peer) & PEER_FLAG_COMPLETED ) {
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torrent->peer_list->down_count++;
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peer_list->peer_count++;
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if( OT_PEERFLAG( ws->peer ) & PEER_FLAG_COMPLETED ) {
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peer_list->down_count++;
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stats_issue_event( EVENT_COMPLETED, 0, (uintptr_t)ws );
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}
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if( OT_PEERFLAG(&ws->peer) & PEER_FLAG_SEEDING )
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torrent->peer_list->seed_count++;
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if( OT_PEERFLAG(ws->peer) & PEER_FLAG_SEEDING )
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peer_list->seed_count++;
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} else {
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stats_issue_event( EVENT_RENEW, 0, OT_PEERTIME( peer_dest ) );
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stats_issue_event( EVENT_RENEW, 0, OT_PEERTIME( peer_dest, peer_size ) );
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#ifdef WANT_SPOT_WOODPECKER
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if( ( OT_PEERTIME(peer_dest) > 0 ) && ( OT_PEERTIME(peer_dest) < 20 ) )
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if( ( OT_PEERTIME(peer_dest, peer_size) > 0 ) && ( OT_PEERTIME(peer_dest, peer_size) < 20 ) )
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stats_issue_event( EVENT_WOODPECKER, 0, (uintptr_t)&ws->peer );
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#endif
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#ifdef WANT_SYNC_LIVE
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/* Won't live sync peers that come back too fast. Only exception:
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fresh "completed" reports */
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if( proto != FLAG_MCA ) {
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if( OT_PEERTIME( peer_dest ) > OT_CLIENT_SYNC_RENEW_BOUNDARY ||
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( !(OT_PEERFLAG(peer_dest) & PEER_FLAG_COMPLETED ) && (OT_PEERFLAG(&ws->peer) & PEER_FLAG_COMPLETED ) ) )
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if( OT_PEERTIME( peer_dest, peer_size ) > OT_CLIENT_SYNC_RENEW_BOUNDARY ||
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( !(OT_PEERFLAG_D(peer_dest, peer_size) & PEER_FLAG_COMPLETED ) && (OT_PEERFLAG(ws->peer) & PEER_FLAG_COMPLETED ) ) )
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livesync_tell( ws );
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}
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#endif
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if( (OT_PEERFLAG(peer_dest) & PEER_FLAG_SEEDING ) && !(OT_PEERFLAG(&ws->peer) & PEER_FLAG_SEEDING ) )
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torrent->peer_list->seed_count--;
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if( !(OT_PEERFLAG(peer_dest) & PEER_FLAG_SEEDING ) && (OT_PEERFLAG(&ws->peer) & PEER_FLAG_SEEDING ) )
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torrent->peer_list->seed_count++;
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if( !(OT_PEERFLAG(peer_dest) & PEER_FLAG_COMPLETED ) && (OT_PEERFLAG(&ws->peer) & PEER_FLAG_COMPLETED ) ) {
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torrent->peer_list->down_count++;
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if( (OT_PEERFLAG_D(peer_dest, peer_size) & PEER_FLAG_SEEDING ) && !(OT_PEERFLAG(ws->peer) & PEER_FLAG_SEEDING ) )
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peer_list->seed_count--;
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if( !(OT_PEERFLAG_D(peer_dest, peer_size) & PEER_FLAG_SEEDING ) && (OT_PEERFLAG(ws->peer) & PEER_FLAG_SEEDING ) )
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peer_list->seed_count++;
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if( !(OT_PEERFLAG_D(peer_dest, peer_size) & PEER_FLAG_COMPLETED ) && (OT_PEERFLAG(ws->peer) & PEER_FLAG_COMPLETED ) ) {
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peer_list->down_count++;
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stats_issue_event( EVENT_COMPLETED, 0, (uintptr_t)ws );
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}
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if( OT_PEERFLAG(peer_dest) & PEER_FLAG_COMPLETED )
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OT_PEERFLAG( &ws->peer ) |= PEER_FLAG_COMPLETED;
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if( OT_PEERFLAG_D(peer_dest, peer_size) & PEER_FLAG_COMPLETED )
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OT_PEERFLAG( ws->peer ) |= PEER_FLAG_COMPLETED;
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}
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memcpy( peer_dest, &ws->peer, sizeof(ot_peer) );
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memcpy( peer_dest, peer_src, peer_size );
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#ifdef WANT_SYNC
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if( proto == FLAG_MCA ) {
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mutex_bucket_unlock_by_hash( *ws->hash, delta_torrentcount );
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@ -183,10 +198,11 @@ size_t add_peer_to_torrent_and_return_peers( PROTO_FLAG proto, struct ot_workstr
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return ws->reply_size;
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}
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static size_t return_peers_all( ot_peerlist *peer_list, char *reply ) {
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static size_t return_peers_all( ot_peerlist *peer_list, size_t peer_size, char *reply ) {
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unsigned int bucket, num_buckets = 1;
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ot_vector * bucket_list = &peer_list->peers;
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size_t result = OT_PEER_COMPARE_SIZE * peer_list->peer_count;
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size_t compare_size = OT_PEER_COMPARE_SIZE_FROM_PEER_SIZE(peer_size);
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size_t result = compare_size * peer_list->peer_count;
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char * r_end = reply + result;
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if( OT_PEERLIST_HASBUCKETS(peer_list) ) {
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@ -195,28 +211,30 @@ static size_t return_peers_all( ot_peerlist *peer_list, char *reply ) {
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}
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for( bucket = 0; bucket<num_buckets; ++bucket ) {
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ot_peer * peers = (ot_peer*)bucket_list[bucket].data;
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size_t peer_count = bucket_list[bucket].size;
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ot_peer *peers = bucket_list[bucket].data;
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size_t peer_count = bucket_list[bucket].size;
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while( peer_count-- ) {
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if( OT_PEERFLAG(peers) & PEER_FLAG_SEEDING ) {
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r_end-=OT_PEER_COMPARE_SIZE;
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memcpy(r_end,peers++,OT_PEER_COMPARE_SIZE);
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if( OT_PEERFLAG_D(peers, peer_size) & PEER_FLAG_SEEDING ) {
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r_end -= peer_size;
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memcpy( r_end, peers, compare_size);
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} else {
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memcpy(reply,peers++,OT_PEER_COMPARE_SIZE);
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reply+=OT_PEER_COMPARE_SIZE;
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memcpy( reply, peers, compare_size );
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reply += compare_size;
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}
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peers += peer_size;
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}
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}
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return result;
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}
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static size_t return_peers_selection( struct ot_workstruct *ws, ot_peerlist *peer_list, size_t amount, char *reply ) {
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static size_t return_peers_selection( struct ot_workstruct *ws, ot_peerlist *peer_list, size_t peer_size, size_t amount, char *reply ) {
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unsigned int bucket_offset, bucket_index = 0, num_buckets = 1;
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ot_vector * bucket_list = &peer_list->peers;
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unsigned int shifted_pc = peer_list->peer_count;
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unsigned int shifted_step = 0;
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unsigned int shift = 0;
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size_t result = OT_PEER_COMPARE_SIZE * amount;
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size_t compare_size = OT_PEER_COMPARE_SIZE_FROM_PEER_SIZE(peer_size);
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size_t result = compare_size * amount;
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char * r_end = reply + result;
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if( OT_PEERLIST_HASBUCKETS(peer_list) ) {
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@ -235,7 +253,7 @@ static size_t return_peers_selection( struct ot_workstruct *ws, ot_peerlist *pee
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bucket_offset = nrand48(ws->rand48_state) % peer_list->peer_count;
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while( amount-- ) {
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ot_peer * peer;
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ot_peer *peer;
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/* This is the aliased, non shifted range, next value may fall into */
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unsigned int diff = ( ( ( amount + 1 ) * shifted_step ) >> shift ) -
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@ -246,13 +264,13 @@ static size_t return_peers_selection( struct ot_workstruct *ws, ot_peerlist *pee
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bucket_offset -= bucket_list[bucket_index].size;
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bucket_index = ( bucket_index + 1 ) % num_buckets;
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}
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peer = ((ot_peer*)bucket_list[bucket_index].data) + bucket_offset;
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if( OT_PEERFLAG(peer) & PEER_FLAG_SEEDING ) {
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r_end-=OT_PEER_COMPARE_SIZE;
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memcpy(r_end,peer,OT_PEER_COMPARE_SIZE);
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peer = bucket_list[bucket_index].data + peer_size * bucket_offset;
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if( OT_PEERFLAG_D(peer, peer_size) & PEER_FLAG_SEEDING ) {
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r_end -= compare_size;
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memcpy(r_end, peer, compare_size);
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} else {
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memcpy(reply,peer,OT_PEER_COMPARE_SIZE);
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reply+=OT_PEER_COMPARE_SIZE;
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memcpy(reply, peer, compare_size);
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reply += compare_size;
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}
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}
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return result;
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@ -267,15 +285,17 @@ static size_t return_peers_selection( struct ot_workstruct *ws, ot_peerlist *pee
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* Does not yet check not to return self
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*/
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size_t return_peers_for_torrent( struct ot_workstruct * ws, ot_torrent *torrent, size_t amount, char *reply, PROTO_FLAG proto ) {
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ot_peerlist *peer_list = torrent->peer_list;
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size_t peer_size = peer_size_from_peer6(&ws->peer);
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ot_peerlist *peer_list = peer_size == OT_PEER_SIZE6 ? torrent->peer_list6 : torrent->peer_list4;
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char *r = reply;
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size_t compare_size = OT_PEER_COMPARE_SIZE_FROM_PEER_SIZE(peer_size);
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if( amount > peer_list->peer_count )
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amount = peer_list->peer_count;
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if( proto == FLAG_TCP ) {
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int erval = OT_CLIENT_REQUEST_INTERVAL_RANDOM;
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r += sprintf( r, "d8:completei%zde10:downloadedi%zde10:incompletei%zde8:intervali%ie12:min intervali%ie" PEERS_BENCODED "%zd:", peer_list->seed_count, peer_list->down_count, peer_list->peer_count-peer_list->seed_count, erval, erval/2, OT_PEER_COMPARE_SIZE*amount );
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r += sprintf( r, "d8:completei%zde10:downloadedi%zde10:incompletei%zde8:intervali%ie12:min intervali%ie%s%zd:", peer_list->seed_count, peer_list->down_count, peer_list->peer_count-peer_list->seed_count, erval, erval/2, peer_size == OT_PEER_SIZE6 ? PEERS_BENCODED6 : PEERS_BENCODED4, compare_size * amount );
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} else {
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*(uint32_t*)(r+0) = htonl( OT_CLIENT_REQUEST_INTERVAL_RANDOM );
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*(uint32_t*)(r+4) = htonl( peer_list->peer_count - peer_list->seed_count );
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@ -285,9 +305,9 @@ size_t return_peers_for_torrent( struct ot_workstruct * ws, ot_torrent *torrent,
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if( amount ) {
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if( amount == peer_list->peer_count )
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r += return_peers_all( peer_list, r );
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r += return_peers_all( peer_list, peer_size, r );
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else
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r += return_peers_selection( ws, peer_list, amount, r );
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r += return_peers_selection( ws, peer_list, peer_size, amount, r );
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}
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if( proto == FLAG_TCP )
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@ -312,9 +332,10 @@ size_t return_udp_scrape_for_torrent( ot_hash hash, char *reply ) {
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memset( reply, 0, 12);
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delta_torrentcount = -1;
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} else {
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r[0] = htonl( torrent->peer_list->seed_count );
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r[1] = htonl( torrent->peer_list->down_count );
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r[2] = htonl( torrent->peer_list->peer_count-torrent->peer_list->seed_count );
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r[0] = htonl( torrent->peer_list6->seed_count + torrent->peer_list4->seed_count );
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r[1] = htonl( torrent->peer_list6->down_count + torrent->peer_list4->down_count );
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r[2] = htonl( torrent->peer_list6->peer_count + torrent->peer_list4->peer_count -
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torrent->peer_list6->seed_count - torrent->peer_list4->seed_count);
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}
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}
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mutex_bucket_unlock_by_hash( hash, delta_torrentcount );
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@ -342,7 +363,10 @@ size_t return_tcp_scrape_for_torrent( ot_hash *hash_list, int amount, char *repl
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*r++='2';*r++='0';*r++=':';
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memcpy( r, hash, sizeof(ot_hash) ); r+=sizeof(ot_hash);
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r += sprintf( r, "d8:completei%zde10:downloadedi%zde10:incompletei%zdee",
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torrent->peer_list->seed_count, torrent->peer_list->down_count, torrent->peer_list->peer_count-torrent->peer_list->seed_count );
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torrent->peer_list6->seed_count + torrent->peer_list4->seed_count,
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torrent->peer_list6->down_count + torrent->peer_list4->down_count,
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torrent->peer_list6->peer_count + torrent->peer_list4->peer_count -
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torrent->peer_list6->seed_count - torrent->peer_list4->seed_count);
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}
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}
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mutex_bucket_unlock_by_hash( *hash, delta_torrentcount );
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@ -358,17 +382,19 @@ size_t remove_peer_from_torrent( PROTO_FLAG proto, struct ot_workstruct *ws ) {
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ot_vector *torrents_list = mutex_bucket_lock_by_hash( *ws->hash );
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ot_torrent *torrent = binary_search( ws->hash, torrents_list->data, torrents_list->size, sizeof( ot_torrent ), OT_HASH_COMPARE_SIZE, &exactmatch );
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ot_peerlist *peer_list = &dummy_list;
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size_t peer_size; /* initialized in next line */
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ot_peer *peer_src = peer_from_peer6(&ws->peer, &peer_size);
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#ifdef WANT_SYNC_LIVE
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if( proto != FLAG_MCA ) {
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OT_PEERFLAG( &ws->peer ) |= PEER_FLAG_STOPPED;
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OT_PEERFLAG( ws->peer ) |= PEER_FLAG_STOPPED;
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livesync_tell( ws );
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}
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#endif
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if( exactmatch ) {
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peer_list = torrent->peer_list;
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switch( vector_remove_peer( &peer_list->peers, &ws->peer ) ) {
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peer_list = peer_size == OT_PEER_SIZE6 ? torrent->peer_list6 : torrent->peer_list4;
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switch( vector_remove_peer( &peer_list->peers, peer_src, peer_size ) ) {
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case 2: peer_list->seed_count--; /* Intentional fallthrough */
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case 1: peer_list->peer_count--; /* Intentional fallthrough */
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default: break;
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@ -377,7 +403,7 @@ size_t remove_peer_from_torrent( PROTO_FLAG proto, struct ot_workstruct *ws ) {
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if( proto == FLAG_TCP ) {
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int erval = OT_CLIENT_REQUEST_INTERVAL_RANDOM;
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ws->reply_size = sprintf( ws->reply, "d8:completei%zde10:incompletei%zde8:intervali%ie12:min intervali%ie" PEERS_BENCODED "0:e", peer_list->seed_count, peer_list->peer_count - peer_list->seed_count, erval, erval / 2 );
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ws->reply_size = sprintf( ws->reply, "d8:completei%zde10:incompletei%zde8:intervali%ie12:min intervali%ie%s0:e", peer_list->seed_count, peer_list->peer_count - peer_list->seed_count, erval, erval / 2, peer_size == OT_PEER_SIZE6 ? PEERS_BENCODED6 : PEERS_BENCODED4 );
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}
|
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/* Handle UDP reply */
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|
@ -409,6 +435,23 @@ void iterate_all_torrents( int (*for_each)( ot_torrent* torrent, uintptr_t data
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}
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}
|
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ot_peer *peer_from_peer6( ot_peer6 *peer, size_t *peer_size ) {
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|
ot_ip6 *ip = (ot_ip6*)peer;
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|
if( !ip6_isv4mapped(ip) ) {
|
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|
|
*peer_size = OT_PEER_SIZE6;
|
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|
|
return (ot_peer*)peer;
|
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|
|
}
|
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|
|
*peer_size = OT_PEER_SIZE4;
|
|
|
|
|
return (ot_peer*)(((uint8_t*)peer) + 12);
|
|
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|
|
}
|
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|
|
size_t peer_size_from_peer6(ot_peer6 *peer) {
|
|
|
|
|
ot_ip6 *ip = (ot_ip6*)peer;
|
|
|
|
|
if( !ip6_isv4mapped(ip))
|
|
|
|
|
return OT_PEER_SIZE6;
|
|
|
|
|
return OT_PEER_SIZE4;
|
|
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|
|
}
|
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|
|
void exerr( char * message ) {
|
|
|
|
|
fprintf( stderr, "%s\n", message );
|
|
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|
|
exit( 111 );
|
|
|
|
|
@ -440,7 +483,8 @@ void trackerlogic_deinit( void ) {
|
|
|
|
|
if( torrents_list->size ) {
|
|
|
|
|
for( j=0; j<torrents_list->size; ++j ) {
|
|
|
|
|
ot_torrent *torrent = ((ot_torrent*)(torrents_list->data)) + j;
|
|
|
|
|
free_peerlist( torrent->peer_list );
|
|
|
|
|
free_peerlist( torrent->peer_list6 );
|
|
|
|
|
free_peerlist( torrent->peer_list4 );
|
|
|
|
|
delta_torrentcount -= 1;
|
|
|
|
|
}
|
|
|
|
|
free( torrents_list->data );
|
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|
Dirk Engling
9 months ago