166 lines
3.6 KiB
C
166 lines
3.6 KiB
C
#ifndef METAFILE_H
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#define METAFILE_H
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#include <bencode.h>
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/* 128 MiB */
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#define MAX_TORRENT_SIZE 128*1024*1024
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/* This file will parse the .torrent file and make accessor functions */
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typedef struct {
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const char* str;
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int len;
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} lenstr_t;
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typedef struct {
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bencode_t path;
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long int size;
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} fileinfo_t;
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typedef struct {
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bencode_t filelist;
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} fileiter_t;
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typedef unsigned char sha1sum_t[20];
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/*
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typedef struct __attribute__((packed)) sha1sum_t {
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unsigned char hash[20];
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} sha1sum_t;
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*/
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typedef struct {
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char* bytes;
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int bytes_size;
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sha1sum_t info_hash;
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const sha1sum_t* pieces;
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int piece_count;
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long int piece_length, creation_date;
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bencode_t announce, created_by, name, source, comment;
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long int is_private;
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int is_multi_file;
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union {
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long int file_size;
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bencode_t files;
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};
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} metainfo_t;
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/*
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* Returns 0 on success, -1 on error
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*/
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int metainfo_create(metainfo_t* metai, const char* path);
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void metainfo_destroy(metainfo_t* metai);
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/*
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* Get the info_hash of the torrent as a pointer
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*/
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const sha1sum_t* metainfo_infohash(metainfo_t* metai);
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/*
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* Get the announce url
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*/
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int metainfo_announce(metainfo_t* metai, const char** str, int* len);
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/*
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* Get the created by string
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*/
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int metainfo_created_by(metainfo_t* metai, const char** str, int* len);
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/*
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* Get the creation date, as a unix timestamp
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*/
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int metainfo_creation_date(metainfo_t* metai);
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/*
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* Get the source
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*/
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int metainfo_source(metainfo_t* metai, const char** str, int* len);
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/*
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* Get the name of the torrent
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*/
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int metainfo_name(metainfo_t* metai, const char** str, int* len);
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/*
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* Get the comment of the torrent
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*/
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int metainfo_comment(metainfo_t* metai, const char** str, int* len);
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/*
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* Is this torrent private?
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*/
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int metainfo_is_private(metainfo_t* metai);
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/*
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* Get the array of pieces
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*/
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int metainfo_pieces(metainfo_t* metai, const sha1sum_t** piece_hash);
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/*
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* Get the number of pieces, this will return the number
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*/
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long int metainfo_piece_count(metainfo_t* metai);
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/*
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* Get the index'th piece hash, returns -1 if invalid
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*/
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int metainfo_piece_index(metainfo_t* metai, int index, \
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const sha1sum_t** piece_hash);
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/*
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* Get the size of 1 piece
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*/
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int metainfo_piece_size(metainfo_t* metai);
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/*
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* Return 1 if the torrent has multiple files, or 0 if has only 1
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*/
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int metainfo_is_multi_file(metainfo_t* metai);
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/*
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* Return the number of files, if it's a multi file. This is slow
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*/
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long int metainfo_file_count(metainfo_t* metai);
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/*
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* Get the index'th file information, if it's a multi file
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* This is slow and shouldn't be used
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*/
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int metainfo_file_index(metainfo_t* metai, int index, fileinfo_t* finfo);
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/*
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* Create a file iterator.
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* This interface should be used to get the file infos.
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* This doesn't need to be freed.
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*/
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int metainfo_fileiter_create(const metainfo_t* metai, fileiter_t* fileiter);
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/*
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* Get the next fileinfo in a multi file torrent
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* Return -1 if there is no more files.
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*/
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int metainfo_file_next(fileiter_t* iter, fileinfo_t* finfo);
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/*
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* Get the file information, if torrent has only 1 file
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*/
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int metainfo_fileinfo(metainfo_t* metai, fileinfo_t* finfo);
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/*
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* Copy the file path from a fileinto_t struct into the buffer at 'out_str',
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* adding separators according to the current platform.
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* if 'out_str' is NULL, return the required bytes to store the name,
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* otherwise the number of bytes copied, or -1 if error.
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* The count does NOT include the null terminator
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*/
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int metainfo_fileinfo_path(fileinfo_t* len, char* out_str);
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/*
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* Return the size of the file in bytes, ofc
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*/
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long int metainfo_fileinfo_size(fileinfo_t* finfo);
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#endif
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