130 lines
3.3 KiB
C
130 lines
3.3 KiB
C
// This file Copyright © 2007-2022 Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0), GPLv3 (SPDX: GPL-3.0),
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// or any future license endorsed by Mnemosyne LLC.
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// License text can be found in the licenses/ folder.
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#pragma once
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#include "transmission.h"
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struct tr_metainfo_builder_file
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{
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char* filename;
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uint64_t size;
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bool is_portable;
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};
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enum class TrMakemetaResult
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{
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OK,
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CANCELLED,
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ERR_URL, // invalid announce URL
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ERR_IO_READ, // see builder.errfile, builder.my_errno
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ERR_IO_WRITE // see builder.errfile, builder.my_errno
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};
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struct tr_tracker_info
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{
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int tier;
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char* announce;
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};
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struct tr_metainfo_builder
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{
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/**
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*** These are set by tr_makeMetaInfoBuilderCreate()
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*** and cleaned up by tr_metaInfoBuilderFree()
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**/
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char* top;
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tr_metainfo_builder_file* files;
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uint64_t totalSize;
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uint32_t fileCount;
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uint32_t pieceSize;
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uint32_t pieceCount;
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bool isFolder;
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/**
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*** These are set inside tr_makeMetaInfo()
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*** by copying the arguments passed to it,
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*** and cleaned up by tr_metaInfoBuilderFree()
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**/
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tr_tracker_info* trackers;
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int trackerCount;
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char** webseeds;
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int webseedCount;
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char* comment;
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char* outputFile;
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bool isPrivate;
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char* source;
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/**
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*** These are set inside tr_makeMetaInfo() so the client
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*** can poll periodically to see what the status is.
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*** The client can also set abortFlag to nonzero to
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*** tell tr_makeMetaInfo() to abort and clean up after itself.
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**/
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uint32_t pieceIndex;
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bool abortFlag;
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bool isDone;
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TrMakemetaResult result;
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/* file in use when result was set to _IO_READ or _IO_WRITE,
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* or the URL in use when the result was set to _URL */
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char errfile[2048];
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/* errno encountered when result was set to _IO_READ or _IO_WRITE */
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int my_errno;
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/**
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*** This is an implementation detail.
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*** The client should never use these fields.
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**/
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struct tr_metainfo_builder* nextBuilder;
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};
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tr_metainfo_builder* tr_metaInfoBuilderCreate(char const* topFile);
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/**
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* Call this before tr_makeMetaInfo() to override the builder.pieceSize
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* and builder.pieceCount values that were set by tr_metainfoBuilderCreate()
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*
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* @return false if the piece size isn't valid; eg, isn't a power of two.
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*/
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bool tr_metaInfoBuilderSetPieceSize(tr_metainfo_builder* builder, uint32_t bytes);
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void tr_metaInfoBuilderFree(tr_metainfo_builder*);
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/**
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* @brief create a new .torrent file
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*
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* This is actually done in a worker thread, not the main thread!
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* Otherwise the client's interface would lock up while this runs.
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*
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* It is the caller's responsibility to poll builder->isDone
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* from time to time! When the worker thread sets that flag,
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* the caller must pass the builder to tr_metaInfoBuilderFree().
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*
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* @param outputFile if nullptr, builder->top + ".torrent" will be used.
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* @param trackers An array of trackers, sorted by tier from first to last.
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* NOTE: only the `tier' and `announce' fields are used.
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*
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* @param trackerCount size of the `trackers' array
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*/
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void tr_makeMetaInfo(
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tr_metainfo_builder* builder,
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char const* output_file,
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tr_tracker_info const* trackers,
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int n_trackers,
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char const** webseeds,
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int n_webseeds,
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char const* comment,
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bool is_private,
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char const* source);
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