mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 12:12:15 +02:00
b2cd82a5bf
Signed-off-by: James Yonan <james@openvpn.net>
216 lines
4.1 KiB
C++
216 lines
4.1 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 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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#ifndef OPENVPN_COMMON_ACTION_H
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#define OPENVPN_COMMON_ACTION_H
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#include <vector>
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#include <string>
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#include <ostream>
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#include <sstream>
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#ifdef HAVE_JSONCPP
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#include "json/json.h"
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#endif
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#include <openvpn/common/exception.hpp>
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#include <openvpn/common/rc.hpp>
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#include <openvpn/common/string.hpp>
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#include <openvpn/common/destruct.hpp>
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namespace openvpn {
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struct Action : public RC<thread_unsafe_refcount>
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{
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typedef RCPtr<Action> Ptr;
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virtual void execute(std::ostream& os) = 0;
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virtual std::string to_string() const = 0;
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#ifdef HAVE_JSONCPP
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virtual Json::Value to_json() const
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{
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throw Exception("Action::to_json() virtual method not implemented");
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}
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#endif
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virtual ~Action() {}
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};
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class ActionList : public std::vector<Action::Ptr>, public DestructorBase
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{
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public:
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typedef RCPtr<ActionList> Ptr;
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ActionList()
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{
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reserve(16);
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}
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void add(Action* action)
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{
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if (action)
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emplace_back(action);
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}
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void add(const Action::Ptr& action)
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{
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if (action)
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push_back(action);
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}
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void add(const ActionList& other)
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{
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insert(end(), other.begin(), other.end());
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}
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bool exists(const Action::Ptr& action) const
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{
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if (action)
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{
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const std::string cmp = action->to_string();
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for (auto &a : *this)
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{
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if (a->to_string() == cmp)
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return true;
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}
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}
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return false;
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}
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virtual void execute(std::ostream& os)
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{
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Iter i(size(), reverse_);
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while (i())
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{
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if (is_halt())
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return;
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try {
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(*this)[i.index()]->execute(os);
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}
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catch (const std::exception& e)
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{
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os << "action exception: " << e.what() << std::endl;
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}
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}
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}
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void execute_log()
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{
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std::ostringstream os;
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execute(os);
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OPENVPN_LOG_STRING(os.str());
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}
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std::string to_string() const
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{
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std::string ret;
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Iter i(size(), reverse_);
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while (i())
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{
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ret += (*this)[i.index()]->to_string();
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ret += '\n';
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}
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return ret;
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}
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void enable_destroy(const bool state)
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{
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enable_destroy_ = state;
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}
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void halt()
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{
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halt_ = true;
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}
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virtual void destroy(std::ostream& os) override // defined by DestructorBase
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{
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if (enable_destroy_)
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{
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execute(os);
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enable_destroy_ = false;
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}
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}
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bool is_halt() const
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{
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return halt_;
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}
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protected:
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class Iter
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{
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public:
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Iter(size_t size, const bool reverse)
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{
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if (reverse)
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{
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idx = size;
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end = -1;
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delta = -1;
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}
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else
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{
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idx = -1;
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end = size;
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delta = 1;
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}
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}
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bool operator()()
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{
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return (idx += delta) != end;
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}
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size_t index() const
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{
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return idx;
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}
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private:
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size_t idx;
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size_t end;
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size_t delta;
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};
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bool reverse_ = false;
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bool enable_destroy_ = false;
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volatile bool halt_ = false;
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};
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struct ActionListReversed : public ActionList
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{
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ActionListReversed()
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{
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reverse_ = true;
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}
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};
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struct ActionListFactory : public RC<thread_unsafe_refcount>
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{
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typedef RCPtr<ActionListFactory> Ptr;
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virtual ActionList::Ptr new_action_list() = 0;
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};
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}
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#endif
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