mirror of
https://github.com/OpenVPN/openvpn3.git
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16b10559f2
OpenVPN Technologies, Inc. change their name to OpenVPN Inc. during the autumn of 2017. Signed-off-by: David Sommerseth <davids@openvpn.net>
160 lines
3.3 KiB
C++
160 lines
3.3 KiB
C++
// OpenVPN -- An application to securely tunnel IP networks
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// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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// packet compression.
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//
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// Copyright (C) 2012-2017 OpenVPN Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License Version 3
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// as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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#ifndef OPENVPN_COMMON_HOSTLIST_H
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#define OPENVPN_COMMON_HOSTLIST_H
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#include <string>
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#include <sstream>
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#include <vector>
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#include <algorithm>
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#include <openvpn/common/exception.hpp>
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#include <openvpn/common/options.hpp>
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#include <openvpn/common/hostport.hpp>
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#include <openvpn/random/randapi.hpp>
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namespace openvpn {
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namespace HostList {
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struct Host
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{
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Host() {}
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Host(const std::string& host_arg, const std::string& port_arg)
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: host(host_arg),
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port(port_arg)
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{
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}
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bool defined() const
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{
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return !host.empty();
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}
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void swap(Host& rhs) noexcept
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{
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host.swap(rhs.host);
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port.swap(rhs.port);
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}
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void reset()
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{
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host.clear();
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port.clear();
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}
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std::string to_string() const
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{
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std::ostringstream os;
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if (defined())
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os << '[' << host << "]:" << port;
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else
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os << "UNDEF_HOST";
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return os.str();
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}
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std::string host;
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std::string port;
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};
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class List : public std::vector<Host>
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{
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public:
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List() {}
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List(const OptionList& opt,
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const std::string& directive,
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const std::string& default_port)
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{
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auto hl = opt.get_index_ptr(directive);
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if (hl)
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{
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for (auto &i : *hl)
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{
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const Option& o = opt[i];
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o.touch();
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add(o.get(1, 256), o.get_default(2, 16, default_port));
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}
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}
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}
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void randomize(RandomAPI& rng)
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{
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std::shuffle(begin(), end(), rng());
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}
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std::string to_string() const
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{
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std::ostringstream os;
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for (auto &h : *this)
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os << h.to_string() << '\n';
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return os.str();
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}
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private:
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void add(const std::string& host,
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const std::string& port)
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{
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const std::string title = "host list";
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HostPort::validate_host(host, title);
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HostPort::validate_port(port, title);
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emplace_back(host, port);
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}
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};
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class Iterator
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{
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public:
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Iterator()
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{
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reset();
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}
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void reset()
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{
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index = -1;
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}
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template <typename HOST>
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bool next(const List& list, HOST& host)
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{
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if (list.size() > 0)
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{
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if (++index >= list.size())
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index = 0;
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const Host& h = list[index];
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host.host = h.host;
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host.port = h.port;
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return true;
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}
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else
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return false;
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}
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private:
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int index;
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};
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}
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}
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#endif
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