examples/dump_torrent.cpp

   1 /*
   2
   3 Copyright (c) 2003, Arvid Norberg
   4 All rights reserved.
   5
   6 Redistribution and use in source and binary forms, with or without
   7 modification, are permitted provided that the following conditions
   8 are met:
   9
  10     * Redistributions of source code must retain the above copyright
  11       notice, this list of conditions and the following disclaimer.
  12     * Redistributions in binary form must reproduce the above copyright
  13       notice, this list of conditions and the following disclaimer in
  14       the documentation and/or other materials provided with the distribution.
  15     * Neither the name of the author nor the names of its
  16       contributors may be used to endorse or promote products derived
  17       from this software without specific prior written permission.
  18
  19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  20 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29 POSSIBILITY OF SUCH DAMAGE.
  30
  31 */
  32
  33 #include <iostream>
  34 #include <fstream>
  35 #include <iterator>
  36 #include <iomanip>
  37
  38 #include "libtorrent/entry.hpp"
  39 #include "libtorrent/bencode.hpp"
  40 #include "libtorrent/torrent_info.hpp"
  41 #include "libtorrent/lazy_entry.hpp"
  42 #include <boost/filesystem/operations.hpp>
  43
  44
  45 int main(int argc, char* argv[])
  46 {
  47         using namespace libtorrent;
  48         using namespace boost::filesystem;
  49
  50         if (argc != 2)
  51         {
  52                 std::cerr << "usage: dump_torrent torrent-file\n";
  53                 return 1;
  54         }
  55 #if BOOST_VERSION < 103400
  56         boost::filesystem::path::default_name_check(boost::filesystem::no_check);
  57 #endif
  58
  59 #ifndef BOOST_NO_EXCEPTIONS
  60         try
  61         {
  62 #endif
  63
  64                 int size = file_size(argv[1]);
  65                 if (size > 10 * 1000000)
  66                 {
  67                         std::cerr << "file too big (" << size << "), aborting\n";
  68                         return 1;
  69                 }
  70                 std::vector<char> buf(size);
  71                 std::ifstream(argv[1], std::ios_base::binary).read(&buf[0], size);
  72                 lazy_entry e;
  73                 int ret = lazy_bdecode(&buf[0], &buf[0] + buf.size(), e);
  74
  75                 if (ret != 0)
  76                 {
  77                         std::cerr << "invalid bencoding: " << ret << std::endl;
  78                         return 1;
  79                 }
  80
  81                 std::cout << "\n\n----- raw info -----\n\n";
  82                 std::cout << e << std::endl;
  83
  84                 torrent_info t(e);
  85
  86                 // print info about torrent
  87                 std::cout << "\n\n----- torrent file info -----\n\n";
  88                 std::cout << "nodes:\n";
  89                 typedef std::vector<std::pair<std::string, int> > node_vec;
  90                 node_vec const& nodes = t.nodes();
  91                 for (node_vec::const_iterator i = nodes.begin(), end(nodes.end());
  92                         i != end; ++i)
  93                 {
  94                         std::cout << i->first << ":" << i->second << "\n";
  95                 }
  96                 std::cout << "trackers:\n";
  97                 for (std::vector<announce_entry>::const_iterator i = t.trackers().begin();
  98                         i != t.trackers().end(); ++i)
  99                 {
 100                         std::cout << i->tier << ": " << i->url << "\n";
 101                 }
 102
 103                 std::cout << "number of pieces: " << t.num_pieces() << "\n";
 104                 std::cout << "piece length: " << t.piece_length() << "\n";
 105                 std::cout << "info hash: " << t.info_hash() << "\n";
 106                 std::cout << "comment: " << t.comment() << "\n";
 107                 std::cout << "created by: " << t.creator() << "\n";
 108                 std::cout << "files:\n";
 109                 int index = 0;
 110                 for (torrent_info::file_iterator i = t.begin_files();
 111                         i != t.end_files(); ++i, ++index)
 112                 {
 113                         int first = t.map_file(index, 0, 1).piece;
 114                         int last = t.map_file(index, i->size - 1, 1).piece;
 115                         std::cout << "  " << std::setw(11) << i->size
 116                                 << " " << i->path.string() << "[ " << first << ", "
 117                                 << last << " ]\n";
 118                 }
 119
 120 #ifndef BOOST_NO_EXCEPTIONS
 121         }
 122         catch (std::exception& e)
 123         {
 124                 std::cout << e.what() << "\n";
 125         }
 126 #endif
 127
 128         return 0;
 129 }
 130