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78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
#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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/* 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 unsigned char ot_byte;
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typedef unsigned short ot_word;
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typedef unsigned long 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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#define MEMMOVE memmove
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#define BZERO bzero
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#define FORMAT_FIXED_STRING sprintf
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#define FORMAT_FORMAT_STRING sprintf
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#define BINARY_FIND binary_search
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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 300
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#define NOW (time(NULL)/OT_POOLS_TIMEOUT)
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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((peer),(port),2);
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#define OT_FLAG(peer) (((ot_byte*)(peer))[6])
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typedef struct {
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ot_time base;
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unsigned long seed_count[ OT_POOLS_COUNT ];
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unsigned long 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( char *chdir_directory );
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void deinit_logic( );
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ot_torrent *add_peer_to_torrent( ot_hash *hash, ot_peer *peer );
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size_t return_peers_for_torrent( ot_torrent *torrent, unsigned long amount, char *reply );
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size_t return_scrape_for_torrent( ot_hash *hash, char *reply );
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void remove_peer_from_torrent( ot_hash *hash, ot_peer *peer );
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void cleanup_torrents( void );
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#endif
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