mirror of
https://github.com/OpenVPN/openvpn3.git
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00bdf8ba8b
ERR_INVALID_OPTION_DNS -- invalid value for some of DNS\Domain options ERR_INVALID_OPTION_CRYPTO -- invalid value for some of SSL\Crypto option ERR_INVALID_CONFIG -- missing option or not supported option ERR_INVALID_OPTION_PUSHED -- pushed to server option error ERR_INVALID_OPTION_VAL -- invalid value for some general option Signed-off-by: Illia Polishchuk <illia.polishchuk@openvpn.com>
125 lines
3.7 KiB
C++
125 lines
3.7 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) 2012-2022 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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// Parse the tls-version-min option.
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#pragma once
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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::TLSVersion {
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enum class Type
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{
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UNDEF,
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V1_0,
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V1_1,
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V1_2,
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V1_3
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};
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inline bool operator<(const Type &A, const Type &B)
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{
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return static_cast<int>(A) < static_cast<int>(B);
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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 Type::UNDEF:
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return "UNDEF";
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case Type::V1_0:
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return "V1_0";
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case Type::V1_1:
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return "V1_1";
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case Type::V1_2:
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return "V1_2";
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case Type::V1_3:
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return "V1_3";
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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" && Type::V1_0 <= max_version)
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return Type::V1_0;
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else if (ver == "1.1" && Type::V1_1 <= max_version)
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return Type::V1_1;
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else if (ver == "1.2" && Type::V1_2 <= max_version)
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return Type::V1_2;
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else if (ver == "1.3" && Type::V1_3 <= max_version)
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return Type::V1_3;
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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(ERR_INVALID_OPTION_CRYPTO, "tls-version-min: unrecognized TLS version");
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}
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inline Type parse_tls_version_min(const OptionList &opt,
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const std::string &relay_prefix,
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const Type max_version)
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{
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const Option *o = opt.get_ptr(relay_prefix + "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 Type::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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Type newtvm = Type::UNDEF;
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if (override.empty() || override == "default")
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newtvm = tvm;
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else if (override == "disabled")
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tvm = Type::UNDEF;
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else if (override == "tls_1_0")
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newtvm = Type::V1_0;
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else if (override == "tls_1_1")
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newtvm = Type::V1_1;
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else if (override == "tls_1_2")
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newtvm = Type::V1_2;
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else if (override == "tls_1_3")
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newtvm = Type::V1_3;
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else
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throw option_error(ERR_INVALID_OPTION_CRYPTO, "tls-version-min: unrecognized override string");
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if (newtvm > orig || newtvm == Type::UNDEF)
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tvm = newtvm;
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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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} // namespace openvpn::TLSVersion
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