mirror of
https://github.com/deneraraujo/OpenVPNAdapter.git
synced 2026-02-11 00:00:08 +08:00
92 lines
2.4 KiB
C++
92 lines
2.4 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_SSL_MSSPARMS_H
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#define OPENVPN_SSL_MSSPARMS_H
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#include <openvpn/common/options.hpp>
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#include <openvpn/common/number.hpp>
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namespace openvpn {
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struct MSSParms
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{
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MSSParms() : mssfix(0),
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mtu(false)
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{
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}
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void parse(const OptionList& opt, bool nothrow=false)
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{
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const Option *o = opt.get_ptr("mssfix");
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if (o)
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{
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const std::string* val = o->get_ptr(1, 16);
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if (val == nullptr)
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{
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if (nothrow)
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{
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OPENVPN_LOG("Missing mssfix value, mssfix functionality disabled");
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return;
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}
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else
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throw option_error("mssfix must have a value");
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}
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const bool status = parse_number_validate<decltype(mssfix)>(*val,
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16,
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576,
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65535,
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&mssfix);
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if (!status)
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{
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if (nothrow)
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{
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// no need to warn if mssfix is actually 0
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if (*val != "0")
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{
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OPENVPN_LOG("Invalid mssfix value " << *val << ", mssfix functionality disabled");
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}
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}
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else
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throw option_error("mssfix: parse/range issue");
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}
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mtu = (o->get_optional(2, 16) == "mtu");
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}
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}
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unsigned int mssfix; // standard OpenVPN mssfix parm
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bool mtu; // consider transport packet overhead in MSS adjustment
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};
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struct MSSCtrlParms
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{
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MSSCtrlParms(const OptionList& opt)
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{
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mssfix_ctrl = opt.get_num<decltype(mssfix_ctrl)>("mssfix-ctrl", 1, 1250,
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256, 65535);
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}
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unsigned int mssfix_ctrl;
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};
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}
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#endif
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