source: trunk/libtransmission/torrent.h @ 7663

Last change on this file since 7663 was 7663, checked in by charles, 13 years ago

(trunk libT) win32 portability patch from Alexey

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File size: 8.7 KB
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1/*
2 * This file Copyright (C) 2009 Charles Kerr <charles@transmissionbt.com>
3 *
4 * This file is licensed by the GPL version 2.  Works owned by the
5 * Transmission project are granted a special exemption to clause 2(b)
6 * so that the bulk of its code can remain under the MIT license.
7 * This exemption does not extend to derived works not owned by
8 * the Transmission project.
9 *
10 * $Id: torrent.h 7663 2009-01-11 17:02:04Z charles $
11 */
12
13#ifndef __TRANSMISSION__
14 #error only libtransmission should #include this header.
15#endif
16
17#ifndef TR_TORRENT_H
18#define TR_TORRENT_H 1
19
20#include "completion.h" /* tr_completion */
21#include "ratecontrol.h" /* tr_ratecontrol */
22#include "session.h" /* tr_globalLock(), tr_globalUnlock() */
23#include "utils.h" /* tr_bitfield */
24
25struct tr_bandwidth;
26struct tr_ratecontrol;
27
28/**
29***  Package-visible ctor API
30**/
31
32void        tr_ctorSetSave( tr_ctor * ctor,
33                            tr_bool   saveMetadataInOurTorrentsDir );
34
35int         tr_ctorGetSave( const tr_ctor * ctor );
36
37/**
38***
39**/
40
41/* just like tr_torrentSetFileDLs but doesn't trigger a fastresume save */
42void        tr_torrentInitFileDLs( tr_torrent *      tor,
43                                   tr_file_index_t * files,
44                                   tr_file_index_t   fileCount,
45                                   tr_bool           do_download );
46
47void        tr_torrentRecheckCompleteness( tr_torrent * );
48
49void        tr_torrentResetTransferStats( tr_torrent * );
50
51void        tr_torrentSetHasPiece( tr_torrent *     tor,
52                                   tr_piece_index_t pieceIndex,
53                                   tr_bool          has );
54
55void        tr_torrentChangeMyPort( tr_torrent * session );
56
57tr_torrent* tr_torrentFindFromId( tr_session * session,
58                                  int          id );
59
60tr_torrent* tr_torrentFindFromHash( tr_session *    session,
61                                    const uint8_t * hash );
62
63tr_torrent* tr_torrentFindFromHashString( tr_session * session,
64                                          const char * hashString );
65
66tr_torrent* tr_torrentFindFromObfuscatedHash( tr_session    * session,
67                                              const uint8_t * hash );
68
69tr_bool     tr_torrentIsPieceTransferAllowed( const tr_torrent * torrent,
70                                              tr_direction       direction );
71
72
73#define tr_block( a, b ) _tr_block( tor, a, b )
74tr_block_index_t _tr_block( const tr_torrent * tor,
75                            tr_piece_index_t   index,
76                            uint32_t           offset );
77
78tr_bool          tr_torrentReqIsValid( const tr_torrent * tor,
79                                       tr_piece_index_t   index,
80                                       uint32_t           offset,
81                                       uint32_t           length );
82
83uint64_t         tr_pieceOffset( const tr_torrent * tor,
84                                 tr_piece_index_t   index,
85                                 uint32_t           offset,
86                                 uint32_t           length );
87
88void             tr_torrentInitFilePriority( tr_torrent       * tor,
89                                             tr_file_index_t    fileIndex,
90                                             tr_priority_t      priority );
91
92
93int              tr_torrentCountUncheckedPieces( const tr_torrent * );
94
95tr_bool          tr_torrentIsFileChecked( const tr_torrent  * tor,
96                                          tr_file_index_t     file );
97
98void             tr_torrentSetPieceChecked( tr_torrent       * tor,
99                                            tr_piece_index_t   piece,
100                                            tr_bool            isChecked );
101
102void             tr_torrentSetFileChecked( tr_torrent       * tor,
103                                           tr_file_index_t    file,
104                                           tr_bool            isChecked );
105
106void             tr_torrentUncheck( tr_torrent * tor );
107
108int              tr_torrentPromoteTracker( tr_torrent   * tor,
109                                           int            trackerIndex );
110
111time_t*          tr_torrentGetMTimes( const tr_torrent  * tor,
112                                      size_t            * setmeCount );
113
114typedef enum
115{
116    TR_VERIFY_NONE,
117    TR_VERIFY_WAIT,
118    TR_VERIFY_NOW
119}
120tr_verify_state;
121
122struct tr_torrent
123{
124    tr_session *             session;
125    tr_info                  info;
126
127    tr_speedlimit            speedLimitMode[2];
128
129    struct tr_ratecontrol    swarmSpeed;
130
131    int                      error;
132    char                     errorString[128];
133
134    uint8_t                  obfuscatedHash[SHA_DIGEST_LENGTH];
135
136    /* If the initiator of the connection receives a handshake in which the
137     * peer_id does not match the expected peerid, then the initiator is
138     * expected to drop the connection. Note that the initiator presumably
139     * received the peer information from the tracker, which includes the
140     * peer_id that was registered by the peer. The peer_id from the tracker
141     * and in the handshake are expected to match.
142     */
143    uint8_t * peer_id;
144
145    /* Where to download */
146    char * downloadDir;
147
148    /* How many bytes we ask for per request */
149    uint32_t                   blockSize;
150    tr_block_index_t           blockCount;
151
152    uint32_t                   lastBlockSize;
153    uint32_t                   lastPieceSize;
154
155    uint32_t                   blockCountInPiece;
156    uint32_t                   blockCountInLastPiece;
157
158    struct tr_completion       completion;
159
160    struct tr_bitfield         checkedPieces;
161    tr_completeness            completeness;
162
163    struct tr_tracker *        tracker;
164    struct tr_publisher_tag *  trackerSubscription;
165
166    uint64_t                   downloadedCur;
167    uint64_t                   downloadedPrev;
168    uint64_t                   uploadedCur;
169    uint64_t                   uploadedPrev;
170    uint64_t                   corruptCur;
171    uint64_t                   corruptPrev;
172
173    time_t                     addedDate;
174    time_t                     activityDate;
175    time_t                     doneDate;
176    time_t                     startDate;
177
178    tr_torrent_completeness_func *   completeness_func;
179    void *                     completeness_func_user_data;
180
181    tr_bool                    isRunning;
182    tr_bool                    isDeleting;
183
184    uint16_t                   maxConnectedPeers;
185
186    tr_verify_state            verifyState;
187
188    time_t                     lastStatTime;
189    tr_stat                    stats;
190
191    tr_torrent *               next;
192
193    int                        uniqueId;
194
195    struct tr_bandwidth      * bandwidth;
196};
197
198/* get the index of this piece's first block */
199static TR_INLINE tr_block_index_t
200tr_torPieceFirstBlock( const tr_torrent * tor, const tr_piece_index_t piece )
201{
202    return piece * tor->blockCountInPiece;
203}
204
205/* what piece index is this block in? */
206static TR_INLINE tr_piece_index_t
207tr_torBlockPiece( const tr_torrent * tor, const tr_block_index_t block )
208{
209    return block / tor->blockCountInPiece;
210}
211
212/* how many blocks are in this piece? */
213static TR_INLINE uint32_t
214tr_torPieceCountBlocks( const tr_torrent * tor, const tr_piece_index_t piece )
215{
216    return piece == tor->info.pieceCount - 1 ? tor->blockCountInLastPiece
217                                             : tor->blockCountInPiece;
218}
219
220/* how many bytes are in this piece? */
221static TR_INLINE uint32_t
222tr_torPieceCountBytes( const tr_torrent * tor, const tr_piece_index_t piece )
223{
224    return piece == tor->info.pieceCount - 1 ? tor->lastPieceSize
225                                             : tor->info.pieceSize;
226}
227
228/* how many bytes are in this block? */
229static TR_INLINE uint32_t
230tr_torBlockCountBytes( const tr_torrent * tor, const tr_block_index_t block )
231{
232    return block == tor->blockCount - 1 ? tor->lastBlockSize
233                                        : tor->blockSize;
234}
235
236static TR_INLINE void tr_torrentLock( const tr_torrent * tor )
237{
238    tr_globalLock( tor->session );
239}
240
241static TR_INLINE void tr_torrentUnlock( const tr_torrent * tor )
242{
243    tr_globalUnlock( tor->session );
244}
245
246static TR_INLINE tr_bool
247tr_torrentExists( const tr_session * session, const uint8_t *   torrentHash )
248{
249    return tr_torrentFindFromHash( (tr_session*)session, torrentHash ) != NULL;
250}
251
252static TR_INLINE tr_bool
253tr_torrentIsSeed( const tr_torrent * tor )
254{
255    return tor->completeness != TR_LEECH;
256}
257
258static TR_INLINE tr_bool tr_torrentIsPrivate( const tr_torrent * tor )
259{
260    return ( tor != NULL ) && tor->info.isPrivate;
261}
262
263static TR_INLINE tr_bool tr_torrentAllowsPex( const tr_torrent * tor )
264{
265    return ( tor != NULL  ) && tor->session->isPexEnabled && !tr_torrentIsPrivate( tor );
266}
267
268static TR_INLINE tr_bool tr_torrentIsPieceChecked( const tr_torrent  * tor, tr_piece_index_t i )
269{
270    return tr_bitfieldHas( &tor->checkedPieces, i );
271}
272
273#endif
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