forked from premiere/premiere-libtorrent
154 lines
4.7 KiB
C++
154 lines
4.7 KiB
C++
/*
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Copyright (c) 2007, 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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#ifndef TORRENT_SOCKS5_STREAM_HPP_INCLUDED
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#define TORRENT_SOCKS5_STREAM_HPP_INCLUDED
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#include "libtorrent/proxy_base.hpp"
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namespace libtorrent {
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namespace socks_error {
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enum socks_error_code
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{
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no_error = 0,
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unsupported_version,
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unsupported_authentication_method,
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unsupported_authentication_version,
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authentication_error,
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username_required,
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general_failure,
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command_not_supported,
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no_identd,
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identd_error,
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num_errors
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};
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}
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#if BOOST_VERSION < 103500
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typedef asio::error::error_category socks_error_category;
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#else
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struct TORRENT_EXPORT socks_error_category : boost::system::error_category
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{
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virtual const char* name() const;
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virtual std::string message(int ev) const;
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virtual boost::system::error_condition default_error_condition(int ev) const
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{ return boost::system::error_condition(ev, *this); }
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};
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#endif
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extern socks_error_category socks_category;
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class socks5_stream : public proxy_base
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{
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public:
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explicit socks5_stream(io_service& io_service)
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: proxy_base(io_service)
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, m_version(5)
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, m_command(1)
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, m_listen(0)
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{}
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void set_version(int v) { m_version = v; }
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void set_command(int c) { m_command = c; }
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void set_username(std::string const& user
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, std::string const& password)
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{
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m_user = user;
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m_password = password;
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}
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typedef boost::function<void(error_code const&)> handler_type;
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//#error fix error messages to use custom error_code category
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//#error add async_connect() that takes a hostname and port as well
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template <class Handler>
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void async_connect(endpoint_type const& endpoint, Handler const& handler)
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{
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m_remote_endpoint = endpoint;
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// the connect is split up in the following steps:
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// 1. resolve name of proxy server
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// 2. connect to proxy server
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// 3. if version == 5:
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// 3.1 send SOCKS5 authentication method message
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// 3.2 read SOCKS5 authentication response
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// 3.3 send username+password
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// 4 send SOCKS command message
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// to avoid unnecessary copying of the handler,
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// store it in a shaed_ptr
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boost::shared_ptr<handler_type> h(new handler_type(handler));
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tcp::resolver::query q(m_hostname, to_string(m_port).elems);
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m_resolver.async_resolve(q, boost::bind(
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&socks5_stream::name_lookup, this, _1, _2, h));
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}
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private:
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void name_lookup(error_code const& e, tcp::resolver::iterator i
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, boost::shared_ptr<handler_type> h);
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void connected(error_code const& e, boost::shared_ptr<handler_type> h);
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void handshake1(error_code const& e, boost::shared_ptr<handler_type> h);
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void handshake2(error_code const& e, boost::shared_ptr<handler_type> h);
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void handshake3(error_code const& e, boost::shared_ptr<handler_type> h);
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void handshake4(error_code const& e, boost::shared_ptr<handler_type> h);
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void socks_connect(boost::shared_ptr<handler_type> h);
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void connect1(error_code const& e, boost::shared_ptr<handler_type> h);
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void connect2(error_code const& e, boost::shared_ptr<handler_type> h);
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void connect3(error_code const& e, boost::shared_ptr<handler_type> h);
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// send and receive buffer
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std::vector<char> m_buffer;
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// proxy authentication
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std::string m_user;
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std::string m_password;
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int m_version;
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int m_command;
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// set to one when we're waiting for the
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// second message to accept an incoming connection
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int m_listen;
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};
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}
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#endif
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