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117 lines
3.5 KiB
C
117 lines
3.5 KiB
C
/* This software was written by Dirk Engling <erdgeist@erdgeist.org>
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It is considered beerware. Prost. Skol. Cheers or whatever.
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$id$ */
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#ifndef __OT_TRACKERLOGIC_H__
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#define __OT_TRACKERLOGIC_H__
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#include <sys/types.h>
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#include <sys/time.h>
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#include <time.h>
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#include <stdint.h>
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typedef uint8_t ot_hash[20];
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typedef time_t ot_time;
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/* Some tracker behaviour tunable */
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#define OT_CLIENT_TIMEOUT 30
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#define OT_CLIENT_TIMEOUT_CHECKINTERVAL 10
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#define OT_CLIENT_TIMEOUT_SEND (60*15)
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#define OT_CLIENT_REQUEST_INTERVAL (60*30)
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#define OT_CLIENT_REQUEST_VARIATION (60*6)
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#define OT_TORRENT_TIMEOUT_HOURS 24
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#define OT_TORRENT_TIMEOUT (60*OT_TORRENT_TIMEOUT_HOURS)
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#define OT_CLIENT_REQUEST_INTERVAL_RANDOM ( OT_CLIENT_REQUEST_INTERVAL - OT_CLIENT_REQUEST_VARIATION/2 + (int)( random( ) % OT_CLIENT_REQUEST_VARIATION ) )
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/* If peers come back before 10 minutes, don't live sync them */
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#define OT_CLIENT_SYNC_RENEW_BOUNDARY 10
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/* We maintain a list of 1024 pointers to sorted list of ot_torrent structs
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Sort key is, of course, its hash */
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#define OT_BUCKET_COUNT 1024
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/* Number of tracker admin ip addresses allowed */
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#define OT_ADMINIP_MAX 64
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#define OT_MAX_THREADS 16
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#define OT_PEER_TIMEOUT 45
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/* From opentracker.c */
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extern time_t g_now_seconds;
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#define g_now_minutes (g_now_seconds/60)
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extern uint32_t g_tracker_id;
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typedef enum { FLAG_TCP, FLAG_UDP, FLAG_MCA } PROTO_FLAG;
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typedef struct {
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uint8_t data[8];
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} ot_peer;
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static const uint8_t PEER_FLAG_SEEDING = 0x80;
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static const uint8_t PEER_FLAG_COMPLETED = 0x40;
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static const uint8_t PEER_FLAG_STOPPED = 0x20;
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static const uint8_t PEER_FLAG_FROM_SYNC = 0x10;
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static const uint8_t PEER_FLAG_LEECHING = 0x00;
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#define OT_SETIP( peer, ip ) memmove((peer),(ip),4);
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#define OT_SETPORT( peer, port ) memmove(((uint8_t*)peer)+4,(port),2);
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#define OT_FLAG(peer) (((uint8_t*)(peer))[6])
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#define OT_PEERTIME(peer) (((uint8_t*)(peer))[7])
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#define OT_PEER_COMPARE_SIZE ((size_t)6)
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#define OT_HASH_COMPARE_SIZE (sizeof(ot_hash))
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struct ot_peerlist;
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typedef struct ot_peerlist ot_peerlist;
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typedef struct {
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ot_hash hash;
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ot_peerlist *peer_list;
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} ot_torrent;
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#include "ot_vector.h"
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struct ot_peerlist {
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ot_time base;
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size_t seed_count;
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size_t peer_count;
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size_t down_count;
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/* normal peers vector or
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pointer to ot_vector[32] buckets if data != NULL and space == 0
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*/
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ot_vector peers;
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};
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#define OT_PEERLIST_HASBUCKETS(peer_list) ((peer_list) && ((peer_list)->peers.size > (peer_list)->peers.space))
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/*
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Exported functions
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*/
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#ifdef WANT_SYNC_LIVE
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#define WANT_SYNC
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#endif
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#ifdef WANT_SYNC
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#define WANT_SYNC_PARAM( param ) , param
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#else
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#define WANT_SYNC_PARAM( param )
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#endif
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int trackerlogic_init( const char * const serverdir );
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void trackerlogic_deinit( void );
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void exerr( char * message );
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/* add_peer_to_torrent does only release the torrent bucket if from_sync is set,
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otherwise it is released in return_peers_for_torrent */
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size_t return_peers_for_torrent( ot_torrent *torrent, size_t amount, char *reply, PROTO_FLAG proto );
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ot_torrent *add_peer_to_torrent( ot_hash *hash, ot_peer *peer WANT_SYNC_PARAM( int from_sync ) );
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size_t remove_peer_from_torrent( ot_hash *hash, ot_peer *peer, char *reply, PROTO_FLAG proto );
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size_t return_tcp_scrape_for_torrent( ot_hash *hash, int amount, char *reply );
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size_t return_udp_scrape_for_torrent( ot_hash *hash, char *reply );
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/* Helper, before it moves to its own object */
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void free_peerlist( ot_peerlist *peer_list );
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#endif
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