mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 20:13:05 +02:00
3555b12a16
Includes new unit test for both client and server-side push-continuation code. Signed-off-by: James Yonan <james@openvpn.net>
99 lines
2.5 KiB
C++
99 lines
2.5 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) 2012-2020 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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// A set of lexical analyzer classes. These classes can be combined
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// with the methods in split.hpp to create parsers.
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#pragma once
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#include <openvpn/common/string.hpp>
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namespace openvpn {
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// This class (or others that define an is_space method) is used as a
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// template parameter to methods in split.hpp.
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struct SpaceMatch
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{
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static bool is_space(char c)
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{
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return string::is_space(c);
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}
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};
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// A basic lexical analyzer that understands quoting
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class StandardLex
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{
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public:
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void put(char c)
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{
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in_backslash_ = false;
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if (backslash_)
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{
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ch = c;
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backslash_ = false;
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in_backslash_ = true;
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}
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else if (c == '\\')
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{
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backslash_ = true;
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ch = -1;
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}
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else if (c == '\"')
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{
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in_quote_ = !in_quote_;
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ch = -1;
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}
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else
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ch = c;
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}
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bool available() const { return ch != -1; }
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int get() const { return ch; }
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void reset() { ch = -1; }
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bool in_quote() const { return in_quote_; }
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bool in_backslash() const { return in_backslash_; }
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private:
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bool in_quote_ = false;
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bool backslash_ = false;
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bool in_backslash_ = false;
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int ch = -1;
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};
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// A null lexical analyzer has no special understanding
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// of any particular string character.
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class NullLex
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{
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public:
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void put(char c) { ch = c; }
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bool available() const { return ch != -1; }
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int get() const { return ch; }
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void reset() { ch = -1; }
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bool in_quote() const { return false; }
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bool in_backslash() const { return false; }
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private:
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int ch = -1;
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};
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} // namespace openvpn
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