431 lines
11 KiB
C++
431 lines
11 KiB
C++
/*
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Copyright (c) 2003-2018, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <cctype>
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#include <algorithm>
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#include <cstdio>
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#include <cstring>
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#include "libtorrent/aux_/disable_warnings_push.hpp"
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#include <boost/optional.hpp>
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#include "libtorrent/aux_/disable_warnings_pop.hpp"
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#include "libtorrent/identify_client.hpp"
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#include "libtorrent/fingerprint.hpp"
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#include "libtorrent/string_util.hpp"
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#include "libtorrent/aux_/numeric_cast.hpp"
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namespace {
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using namespace libtorrent;
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int decode_digit(std::uint8_t c)
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{
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if (is_digit(char(c))) return c - '0';
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return c - 'A' + 10;
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}
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// takes a peer id and returns a valid boost::optional
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// object if the peer id matched the azureus style encoding
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// the returned fingerprint contains information about the
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// client's id
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boost::optional<fingerprint> parse_az_style(const peer_id& id)
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{
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fingerprint ret("..", 0, 0, 0, 0);
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if (id[0] != '-' || !is_print(char(id[1])) || (id[2] < '0')
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|| (id[3] < '0') || (id[4] < '0')
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|| (id[5] < '0') || (id[6] < '0')
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|| id[7] != '-')
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return boost::optional<fingerprint>();
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ret.name[0] = char(id[1]);
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ret.name[1] = char(id[2]);
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ret.major_version = decode_digit(id[3]);
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ret.minor_version = decode_digit(id[4]);
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ret.revision_version = decode_digit(id[5]);
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ret.tag_version = decode_digit(id[6]);
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return boost::optional<fingerprint>(ret);
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}
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// checks if a peer id can possibly contain a shadow-style
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// identification
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boost::optional<fingerprint> parse_shadow_style(const peer_id& id)
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{
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fingerprint ret("..", 0, 0, 0, 0);
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if (!is_alpha(char(id[0])) && !is_digit(char(id[0])))
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return boost::optional<fingerprint>();
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if (std::equal(id.begin() + 4, id.begin() + 6, "--"))
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{
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if ((id[1] < '0') || (id[2] < '0')
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|| (id[3] < '0'))
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return boost::optional<fingerprint>();
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ret.major_version = decode_digit(id[1]);
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ret.minor_version = decode_digit(id[2]);
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ret.revision_version = decode_digit(id[3]);
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}
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else
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{
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if (id[8] != 0 || id[1] > 127 || id[2] > 127 || id[3] > 127)
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return boost::optional<fingerprint>();
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ret.major_version = id[1];
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ret.minor_version = id[2];
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ret.revision_version = id[3];
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}
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ret.name[0] = char(id[0]);
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ret.name[1] = 0;
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ret.tag_version = 0;
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return boost::optional<fingerprint>(ret);
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}
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// checks if a peer id can possibly contain a mainline-style
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// identification
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boost::optional<fingerprint> parse_mainline_style(const peer_id& id)
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{
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char ids[21];
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std::copy(id.begin(), id.end(), ids);
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ids[20] = 0;
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fingerprint ret("..", 0, 0, 0, 0);
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ret.name[1] = 0;
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ret.tag_version = 0;
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if (sscanf(ids, "%1c%3d-%3d-%3d--", &ret.name[0], &ret.major_version, &ret.minor_version
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, &ret.revision_version) != 4
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|| !is_print(ret.name[0]))
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return boost::optional<fingerprint>();
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return boost::optional<fingerprint>(ret);
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}
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struct map_entry
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{
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char const* id;
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char const* name;
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};
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// only support BitTorrentSpecification
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// must be ordered alphabetically
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const map_entry name_map[] =
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{
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{"7T", "aTorrent for android"}
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, {"A", "ABC"}
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, {"AB", "AnyEvent BitTorrent"}
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, {"AG", "Ares"}
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, {"AR", "Arctic Torrent"}
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, {"AT", "Artemis"}
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, {"AV", "Avicora"}
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, {"AX", "BitPump"}
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, {"AZ", "Azureus"}
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, {"A~", "Ares"}
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, {"BB", "BitBuddy"}
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, {"BC", "BitComet"}
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, {"BE", "baretorrent"}
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, {"BF", "Bitflu"}
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, {"BG", "BTG"}
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, {"BL", "BitBlinder"}
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, {"BP", "BitTorrent Pro"}
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, {"BR", "BitRocket"}
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, {"BS", "BTSlave"}
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, {"BT", "BitTorrent"}
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, {"BU", "BigUp"}
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, {"BW", "BitWombat"}
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, {"BX", "BittorrentX"}
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, {"CD", "Enhanced CTorrent"}
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, {"CT", "CTorrent"}
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, {"DE", "Deluge"}
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, {"DP", "Propagate Data Client"}
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, {"EB", "EBit"}
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, {"ES", "electric sheep"}
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, {"FC", "FileCroc"}
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, {"FT", "FoxTorrent"}
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, {"FW", "FrostWire"}
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, {"FX", "Freebox BitTorrent"}
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, {"GS", "GSTorrent"}
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, {"HK", "Hekate"}
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, {"HL", "Halite"}
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, {"HN", "Hydranode"}
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, {"IL", "iLivid"}
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, {"KC", "Koinonein"}
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, {"KG", "KGet"}
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, {"KT", "KTorrent"}
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, {"LC", "LeechCraft"}
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, {"LH", "LH-ABC"}
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, {"LK", "Linkage"}
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, {"LP", "lphant"}
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, {"LT", "libtorrent"}
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, {"LW", "Limewire"}
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, {"M", "Mainline"}
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, {"ML", "MLDonkey"}
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, {"MO", "Mono Torrent"}
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, {"MP", "MooPolice"}
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, {"MR", "Miro"}
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, {"MT", "Moonlight Torrent"}
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, {"NX", "Net Transport"}
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, {"O", "Osprey Permaseed"}
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, {"OS", "OneSwarm"}
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, {"OT", "OmegaTorrent"}
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, {"PD", "Pando"}
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, {"Q", "BTQueue"}
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, {"QD", "QQDownload"}
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, {"QT", "Qt 4"}
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, {"R", "Tribler"}
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, {"RT", "Retriever"}
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, {"RZ", "RezTorrent"}
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, {"S", "Shadow"}
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, {"SB", "Swiftbit"}
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, {"SD", "Xunlei"}
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, {"SK", "spark"}
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, {"SN", "ShareNet"}
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, {"SS", "SwarmScope"}
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, {"ST", "SymTorrent"}
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, {"SZ", "Shareaza"}
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, {"S~", "Shareaza (beta)"}
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, {"T", "BitTornado"}
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, {"TB", "Torch"}
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, {"TL", "Tribler"}
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, {"TN", "Torrent.NET"}
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, {"TR", "Transmission"}
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, {"TS", "TorrentStorm"}
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, {"TT", "TuoTu"}
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, {"U", "UPnP"}
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, {"UL", "uLeecher"}
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, {"UM", "uTorrent Mac"}
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, {"UT", "uTorrent"}
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, {"VG", "Vagaa"}
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, {"WT", "BitLet"}
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, {"WY", "FireTorrent"}
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, {"XF", "Xfplay"}
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, {"XL", "Xunlei"}
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, {"XS", "XSwifter"}
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, {"XT", "XanTorrent"}
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, {"XX", "Xtorrent"}
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, {"ZT", "ZipTorrent"}
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, {"lt", "rTorrent"}
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, {"pX", "pHoeniX"}
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, {"qB", "qBittorrent"}
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, {"st", "SharkTorrent"}
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};
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struct generic_map_entry
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{
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int offset;
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char const* id;
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char const* name;
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};
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// non-standard names
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const generic_map_entry generic_mappings[] =
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{
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{0, "Deadman Walking-", "Deadman"}
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, {5, "Azureus", "Azureus 2.0.3.2"}
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, {0, "DansClient", "XanTorrent"}
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, {4, "btfans", "SimpleBT"}
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, {0, "PRC.P---", "Bittorrent Plus! II"}
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, {0, "P87.P---", "Bittorrent Plus!"}
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, {0, "S587Plus", "Bittorrent Plus!"}
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, {0, "martini", "Martini Man"}
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, {0, "Plus---", "Bittorrent Plus"}
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, {0, "turbobt", "TurboBT"}
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, {0, "a00---0", "Swarmy"}
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, {0, "a02---0", "Swarmy"}
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, {0, "T00---0", "Teeweety"}
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, {0, "BTDWV-", "Deadman Walking"}
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, {2, "BS", "BitSpirit"}
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, {0, "Pando-", "Pando"}
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, {0, "LIME", "LimeWire"}
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, {0, "btuga", "BTugaXP"}
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, {0, "oernu", "BTugaXP"}
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, {0, "Mbrst", "Burst!"}
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, {0, "PEERAPP", "PeerApp"}
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, {0, "Plus", "Plus!"}
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, {0, "-Qt-", "Qt"}
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, {0, "exbc", "BitComet"}
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, {0, "DNA", "BitTorrent DNA"}
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, {0, "-G3", "G3 Torrent"}
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, {0, "-FG", "FlashGet"}
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, {0, "-ML", "MLdonkey"}
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, {0, "-MG", "Media Get"}
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, {0, "XBT", "XBT"}
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, {0, "OP", "Opera"}
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, {2, "RS", "Rufus"}
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, {0, "AZ2500BT", "BitTyrant"}
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, {0, "btpd/", "BitTorrent Protocol Daemon"}
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, {0, "TIX", "Tixati"}
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, {0, "QVOD", "Qvod"}
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};
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bool compare_id(map_entry const& lhs, map_entry const& rhs)
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{
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return lhs.id[0] < rhs.id[0]
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|| ((lhs.id[0] == rhs.id[0]) && (lhs.id[1] < rhs.id[1]));
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}
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std::string lookup(fingerprint const& f)
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{
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char identity[200];
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const int size = sizeof(name_map)/sizeof(name_map[0]);
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const map_entry tmp = {f.name, ""};
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const map_entry* i =
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std::lower_bound(name_map, name_map + size
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, tmp, &compare_id);
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#ifndef NDEBUG
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for (int j = 1; j < size; ++j)
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{
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TORRENT_ASSERT(compare_id(name_map[j-1]
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, name_map[j]));
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}
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#endif
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char temp[3];
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char const* name = nullptr;
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if (i < name_map + size && std::equal(f.name, f.name + 2, i->id))
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{
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name = i->name;
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}
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else
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{
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// if we don't have this client in the list
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// just use the one or two letter code
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std::memcpy(temp, f.name, 2);
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temp[2] = 0;
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name = temp;
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}
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int num_chars = std::snprintf(identity, sizeof(identity), "%s %d.%d.%d", name
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, f.major_version, f.minor_version, f.revision_version);
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if (f.tag_version != 0)
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{
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std::snprintf(identity + num_chars, sizeof(identity) - aux::numeric_cast<std::size_t>(num_chars)
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, ".%d", f.tag_version);
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}
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return identity;
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}
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bool find_string(char const* id, char const* search)
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{
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return std::equal(search, search + std::strlen(search), id);
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}
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} // anonymous namespace
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namespace libtorrent {
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#if TORRENT_ABI_VERSION == 1
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boost::optional<fingerprint> client_fingerprint(peer_id const& p)
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{
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// look for azureus style id
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boost::optional<fingerprint> f;
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f = parse_az_style(p);
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if (f) return f;
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// look for shadow style id
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f = parse_shadow_style(p);
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if (f) return f;
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// look for mainline style id
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return parse_mainline_style(p);
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}
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#endif
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std::string identify_client(peer_id const& p)
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{
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return aux::identify_client_impl(p);
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}
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namespace aux {
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std::string identify_client_impl(peer_id const& p)
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{
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char const* PID = p.data();
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if (p.is_all_zeros()) return "Unknown";
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// ----------------------
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// non standard encodings
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// ----------------------
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for (auto const& e : generic_mappings)
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{
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if (find_string(PID + e.offset, e.id)) return e.name;
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}
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if (find_string(PID, "-BOW") && PID[7] == '-')
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return "Bits on Wheels " + std::string(PID + 4, PID + 7);
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if (find_string(PID, "eX"))
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{
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std::string user(PID + 2, 12);
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return std::string("eXeem ('") + user + "')";
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}
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bool const is_equ_zero = std::equal(PID, PID + 12, "\0\0\0\0\0\0\0\0\0\0\0\0");
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if (is_equ_zero && PID[12] == '\x97')
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return "Experimental 3.2.1b2";
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if (is_equ_zero && PID[12] == '\0')
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return "Experimental 3.1";
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// look for azureus style id
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boost::optional<fingerprint> f = parse_az_style(p);
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if (f) return lookup(*f);
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// look for shadow style id
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f = parse_shadow_style(p);
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if (f) return lookup(*f);
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// look for mainline style id
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f = parse_mainline_style(p);
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if (f) return lookup(*f);
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if (is_equ_zero)
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return "Generic";
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std::string unknown("Unknown [");
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for (unsigned char const c : p)
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unknown += is_print(char(c)) ? char(c) : '.';
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unknown += "]";
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return unknown;
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}
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} // aux
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} // libtorrent
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