bencoder: A parser for BitTorrent .torrent files

Installation

• Go to the latest release
• Download the RPM file for Red-Hat based Linux Systems, DEB file for Debian based systems or the DLL or LIB file for Windows

# Ubuntu/Debian
sudo dpkg -i <file>.deb

# RedHat Based Linux
sudo rpm -i <file>.rpm

For Windows, you have to link it into the Visual Studio Project using the Linker menu in the Properties of the Project. Then download the bencoder.h file and include that as a header file.

Usage

#include <bencoder.h>

char* bencodeTypes[4] = {
    "INTEGER", // data = long long* (A pointer not a constant value)
    "STRING", // data = char*
    "LIST", // data = struct BencodeStructure* (contiguous structs not to be confused with array of pointers)
    "DICTIONARY" // data = struct BencodeMap* (contiguous structs not to be confused with array of pointers)
};


int main(int argc, char **argv)
{
    if (argc != 2){
        printf("Usage: %s <torrentfile>\n", argv[0]);
        return 1;
    }
    // Load file
    FILE *f = fopen(argv[1], "r");
    if (f == NULL)
    {
        perror(argv[1]);
        return 1;
    }
    fseek(f, 0, SEEK_END);
    size_t fsize = ftell(f);
    rewind(f);
    char *data = malloc(fsize);
    fread(data, fsize, 1, f);
    fclose(f);

    // Parse bencode
    struct BencodeStructure* struc = parseBencode(data, fsize);
    free(data);
    if (!struc) // Error
    {
        printf("Error parsing file\n");
        return 1;
    }
    printf("Type: %s\n", bencodeTypes[struc->type]);
    freeBencode(struc);
}