forked from premiere/premiere-libtorrent
135 lines
3.7 KiB
C++
135 lines
3.7 KiB
C++
/*
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Copyright (c) 2008-2016, 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 "libtorrent/parse_url.hpp"
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#include <algorithm>
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namespace libtorrent
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{
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// returns protocol, auth, hostname, port, path
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std::tuple<std::string, std::string, std::string, int, std::string>
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parse_url_components(std::string url, error_code& ec)
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{
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std::string hostname; // hostname only
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std::string auth; // user:pass
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std::string protocol; // http or https for instance
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int port = -1;
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std::string::iterator at;
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std::string::iterator colon;
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std::string::iterator port_pos;
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// PARSE URL
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std::string::iterator start = url.begin();
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// remove white spaces in front of the url
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while (start != url.end() && is_space(*start))
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++start;
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std::string::iterator end
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= std::find(url.begin(), url.end(), ':');
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protocol.assign(start, end);
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if (end == url.end())
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{
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ec = errors::unsupported_url_protocol;
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goto exit;
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}
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++end;
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if (end == url.end() || *end != '/')
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{
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ec = errors::unsupported_url_protocol;
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goto exit;
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}
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++end;
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if (end == url.end() || *end != '/')
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{
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ec = errors::unsupported_url_protocol;
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goto exit;
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}
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++end;
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start = end;
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at = std::find(start, url.end(), '@');
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colon = std::find(start, url.end(), ':');
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end = std::find(start, url.end(), '/');
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if (at != url.end()
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&& colon != url.end()
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&& colon < at
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&& at < end)
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{
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auth.assign(start, at);
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start = at;
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++start;
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}
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// this is for IPv6 addresses
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if (start != url.end() && *start == '[')
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{
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port_pos = std::find(start, url.end(), ']');
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if (port_pos == url.end())
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{
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ec = errors::expected_close_bracket_in_address;
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goto exit;
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}
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// strip the brackets
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hostname.assign(start + 1, port_pos);
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port_pos = std::find(port_pos, url.end(), ':');
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}
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else
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{
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port_pos = std::find(start, url.end(), ':');
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if (port_pos < end) hostname.assign(start, port_pos);
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else hostname.assign(start, end);
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}
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if (port_pos < end)
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{
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++port_pos;
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for (std::string::iterator i = port_pos; i < end; ++i)
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{
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if (is_digit(*i)) continue;
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ec = errors::invalid_port;
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goto exit;
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}
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port = std::atoi(std::string(port_pos, end).c_str());
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}
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start = end;
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exit:
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return std::make_tuple(protocol, auth, hostname, port
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, std::string(start, url.end()));
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}
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}
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