mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 20:13:05 +02:00
105 lines
2.8 KiB
C++
105 lines
2.8 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) 2012-2015 OpenVPN Technologies, 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_CLIENT_OPTFILT_H
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#define OPENVPN_CLIENT_OPTFILT_H
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#include <openvpn/common/options.hpp>
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// Options filters
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namespace openvpn {
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class PushedOptionsFilter : public OptionList::FilterBase
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{
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public:
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PushedOptionsFilter(const bool route_nopull)
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: route_nopull_(route_nopull) {}
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virtual bool filter(const Option& opt)
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{
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const bool ret = filt(opt);
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if (!ret)
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OPENVPN_LOG("Ignored due to route-nopull: " << opt.render(Option::RENDER_TRUNC_64|Option::RENDER_BRACKET));
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return ret;
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}
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private:
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// return false if pushed option should be ignored due to route-nopull directive.
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bool filt(const Option& opt)
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{
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if (route_nopull_)
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{
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if (opt.size() >= 1)
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{
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const std::string& directive = opt.ref(0);
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if (directive.length() >= 1)
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{
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switch (directive[0])
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{
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case 'b':
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if (directive == "block-ipv6")
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return false;
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break;
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case 'c':
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if (directive == "client-nat")
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return false;
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break;
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case 'd':
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if (directive == "dhcp-option" ||
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directive == "dhcp-renew" ||
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directive == "dhcp-pre-release" ||
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directive == "dhcp-release")
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return false;
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break;
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case 'i':
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if (directive == "ip-win32")
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return false;
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break;
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case 'r':
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if (directive == "route" ||
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directive == "route-ipv6" ||
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directive == "route-metric" ||
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directive == "redirect-gateway" ||
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directive == "redirect-private" ||
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directive == "register-dns" ||
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directive == "route-delay" ||
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directive == "route-method")
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return false;
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break;
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case 't':
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if (directive == "tap-sleep")
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return false;
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break;
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}
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}
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}
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}
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return true;
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}
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bool route_nopull_;
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};
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}
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#endif
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