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113 lines
3.7 KiB
C
113 lines
3.7 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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#ifndef __TRACKERLOGIC_H__
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#define __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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/* Should be called BYTE, WORD, DWORD - but some OSs already have that and there's no #iftypedef */
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/* They mark memory used as data instead of integer or human readable string -
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they should be cast before used as integer/text */
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typedef uint8_t ot_byte;
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typedef uint16_t ot_word;
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typedef uint32_t ot_dword;
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typedef ot_byte ot_hash[20];
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typedef ot_dword ot_ip;
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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*60*OT_TORRENT_TIMEOUT_HOURS)/OT_POOLS_TIMEOUT)
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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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/* We maintain a list of 256 pointers to sorted list of ot_torrent structs
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Sort key is, of course, its hash */
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/* This list points to 9 pools of peers each grouped in five-minute-intervals
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thus achieving a timeout of 2700s or 45 minutes
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These pools are sorted by its binary content */
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#define OT_POOLS_COUNT 9
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#define OT_POOLS_TIMEOUT (60*5)
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extern time_t g_now;
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#define NOW (g_now/OT_POOLS_TIMEOUT)
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#define OT_VECTOR_MIN_MEMBERS 4
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#define OT_VECTOR_GROW_RATIO 8
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#define OT_VECTOR_SHRINK_THRESH 6
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#define OT_VECTOR_SHRINK_RATIO 4
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typedef struct {
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void *data;
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size_t size;
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size_t space;
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} ot_vector;
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typedef struct {
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ot_byte data[8];
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} ot_peer;
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static const ot_byte PEER_FLAG_SEEDING = 0x80;
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static const ot_byte PEER_FLAG_COMPLETED = 0x40;
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static const ot_byte PEER_FLAG_STOPPED = 0x20;
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#define OT_SETIP( peer, ip ) memmove((peer),(ip),4);
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#define OT_SETPORT( peer, port ) memmove(((ot_byte*)peer)+4,(port),2);
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#define OT_FLAG(peer) (((ot_byte*)(peer))[6])
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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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typedef struct {
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ot_time base;
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size_t seed_count[ OT_POOLS_COUNT ];
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size_t downloaded;
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ot_vector peers[ OT_POOLS_COUNT ];
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} 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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/*
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Exported functions
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*/
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int init_logic( const char * const serverdir );
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void deinit_logic( void );
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enum { STATS_MRTG, STATS_TOP5, STATS_DMEM, STATS_TCP, STATS_UDP, STATS_SLASH24S, STATS_SLASH24S_OLD, SYNC_IN, SYNC_OUT };
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ot_torrent *add_peer_to_torrent( ot_hash *hash, ot_peer *peer, int from_changeset );
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size_t remove_peer_from_torrent( ot_hash *hash, ot_peer *peer, char *reply, int is_tcp );
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size_t return_peers_for_torrent( ot_torrent *torrent, size_t amount, char *reply, int is_tcp );
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size_t return_fullscrape_for_tracker( char **reply );
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size_t return_tcp_scrape_for_torrent( ot_hash *hash, char *reply );
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size_t return_udp_scrape_for_torrent( ot_hash *hash, char *reply );
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size_t return_stats_for_tracker( char *reply, int mode );
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size_t return_stats_for_slash24s( char *reply, size_t amount, ot_dword thresh );
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size_t return_stats_for_slash24s_old( char *reply, size_t amount, ot_dword thresh );
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size_t return_memstat_for_tracker( char **reply );
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size_t return_changeset_for_tracker( char **reply );
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int add_changeset_to_tracker( ot_byte *data, size_t len );
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void clean_all_torrents( void );
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#if defined ( WANT_BLACKLISTING ) || defined ( WANT_CLOSED_TRACKER )
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int accesslist_addentry( ot_hash *hash );
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void accesslist_reset( void );
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#endif
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#endif
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