mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 20:13:05 +02:00
109 lines
3.0 KiB
C++
109 lines
3.0 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) 2012-2016 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 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 General Public License for more details.
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//
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// You should have received a copy of the GNU 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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// Parse the tls-version-min option.
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#ifndef OPENVPN_SSL_TLSVER_H
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#define OPENVPN_SSL_TLSVER_H
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#include <string>
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#include <openvpn/common/size.hpp>
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#include <openvpn/common/exception.hpp>
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#include <openvpn/common/options.hpp>
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namespace openvpn {
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namespace TLSVersion {
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enum Type {
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UNDEF=0,
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V1_0,
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V1_1,
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V1_2
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};
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inline const std::string to_string(const Type version)
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{
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switch (version)
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{
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case UNDEF:
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return "UNDEF";
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case V1_0:
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return "V1_0";
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case V1_1:
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return "V1_1";
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case V1_2:
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return "V1_2";
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default:
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return "???";
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}
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}
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inline Type parse_tls_version_min(const std::string& ver,
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const bool or_highest,
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const Type max_version)
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{
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if (ver == "1.0" && V1_0 <= max_version)
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return V1_0;
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else if (ver == "1.1" && V1_1 <= max_version)
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return V1_1;
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else if (ver == "1.2" && V1_2 <= max_version)
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return V1_2;
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else if (or_highest)
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return max_version;
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else
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throw option_error("tls-version-min: unrecognized TLS version");
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}
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inline Type parse_tls_version_min(const OptionList& opt, const Type max_version)
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{
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const Option* o = opt.get_ptr("tls-version-min");
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if (o)
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{
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const std::string ver = o->get_optional(1, 16);
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const bool or_highest = (o->get_optional(2, 16) == "or-highest");
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return parse_tls_version_min(ver, or_highest, max_version);
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}
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return UNDEF;
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}
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inline void apply_override(Type& tvm, const std::string& override)
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{
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//const Type orig = tvm;
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if (override.empty() || override == "default")
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;
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else if (override == "disabled")
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tvm = UNDEF;
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else if (override == "tls_1_0")
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tvm = V1_0;
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else if (override == "tls_1_1")
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tvm = V1_1;
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else if (override == "tls_1_2")
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tvm = V1_2;
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else
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throw option_error("tls-version-min: unrecognized override string");
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//OPENVPN_LOG("*** TLS-version-min before=" << to_string(orig) << " override=" << override << " after=" << to_string(tvm)); // fixme
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}
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}
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}
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#endif
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