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https://github.com/OpenVPN/openvpn3.git
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dde1574596
This is the result after running 'clang-format -i' on all C++ files and headers, with the defined formatting rules in .clang-format. Only the openvpn/common/unicode-impl.hpp has been excluded, as that is mostly a copy of an external project. Signed-off-by: David Sommerseth <davids@openvpn.net>
130 lines
3.6 KiB
C++
130 lines
3.6 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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#ifndef OPENVPN_CLIENT_CLIHALT_H
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#define OPENVPN_CLIENT_CLIHALT_H
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#include <string>
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#include <sstream>
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#include <vector>
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#include <openvpn/common/exception.hpp>
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#include <openvpn/common/split.hpp>
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#include <openvpn/common/unicode.hpp>
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#include <openvpn/common/string.hpp>
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// Process halt/restart messages from server:
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// HALT,<client_reason> -> disconnect
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// RESTART,<client_reason> -> restart with reason, don't preserve session ID
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// RESTART,[P]:<client_reason> -> restart with reason, do preserve session ID
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namespace openvpn {
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class ClientHalt
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{
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typedef std::vector<std::string> StringList;
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public:
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OPENVPN_SIMPLE_EXCEPTION(client_halt_error);
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ClientHalt(const std::string &msg, const bool unicode_filter)
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{
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// get operator (halt or restart)
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StringList sl;
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parse_msg(sl, msg);
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if (is_halt(sl))
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;
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else if (is_restart(sl))
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restart_ = true;
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else
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throw client_halt_error();
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// get flags and reason
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if (sl.size() >= 2)
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{
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size_t reason_pos = 0;
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if (restart_ && string::starts_with(sl[1], "[P]:"))
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{
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psid_ = true;
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reason_pos = 4;
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}
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reason_ = sl[1].substr(reason_pos);
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if (unicode_filter)
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reason_ = Unicode::utf8_printable(reason_, 256);
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}
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}
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static bool match(const std::string &msg)
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{
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StringList sl;
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parse_msg(sl, msg);
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return is_halt(sl) || is_restart(sl);
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}
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// returns true for restart, false for halt
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bool restart() const
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{
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return restart_;
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}
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// returns true if session ID should be preserved
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bool psid() const
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{
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return psid_;
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}
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// returns user-visible reason string
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const std::string &reason() const
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{
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return reason_;
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}
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std::string render() const
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{
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std::ostringstream os;
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os << (restart_ ? "RESTART" : "HALT") << " psid=" << psid_ << " reason='" << reason_ << '\'';
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return os.str();
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}
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private:
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static void parse_msg(StringList &sl, const std::string &msg)
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{
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sl.reserve(2);
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Split::by_char_void<StringList, NullLex, Split::NullLimit>(sl, msg, ',', 0, 1);
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}
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static bool is_halt(const StringList &sl)
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{
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return sl.size() >= 1 && sl[0] == "HALT";
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}
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static bool is_restart(const StringList &sl)
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{
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return sl.size() >= 1 && sl[0] == "RESTART";
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}
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bool restart_ = false;
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bool psid_ = false;
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std::string reason_;
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};
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} // namespace openvpn
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#endif
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