mirror of
https://github.com/deneraraujo/OpenVPNAdapter.git
synced 2026-02-11 00:00:08 +08:00
106 lines
4.1 KiB
C++
106 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 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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// Abstract base classes for client transport objects that implement UDP, TCP,
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// HTTP Proxy, etc.
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#ifndef OPENVPN_TRANSPORT_CLIENT_TRANSBASE_H
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#define OPENVPN_TRANSPORT_CLIENT_TRANSBASE_H
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#include <string>
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#include <openvpn/io/io.hpp>
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#include <openvpn/common/exception.hpp>
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#include <openvpn/common/rc.hpp>
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#include <openvpn/buffer/buffer.hpp>
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#include <openvpn/addr/ip.hpp>
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#include <openvpn/error/error.hpp>
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#include <openvpn/crypto/cryptodc.hpp>
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#include <openvpn/transport/protocol.hpp>
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namespace openvpn {
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struct TransportClientParent;
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// Base class for client transport object.
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struct TransportClient : public virtual RC<thread_unsafe_refcount>
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{
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typedef RCPtr<TransportClient> Ptr;
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virtual void transport_start() = 0;
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virtual void stop() = 0;
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virtual bool transport_send_const(const Buffer& buf) = 0;
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virtual bool transport_send(BufferAllocated& buf) = 0;
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virtual bool transport_send_queue_empty() = 0;
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virtual bool transport_has_send_queue() = 0;
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virtual void transport_stop_requeueing() = 0;
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virtual unsigned int transport_send_queue_size() = 0;
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virtual void reset_align_adjust(const size_t align_adjust) = 0;
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virtual IP::Addr server_endpoint_addr() const = 0;
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virtual void server_endpoint_info(std::string& host, std::string& port, std::string& proto, std::string& ip_addr) const = 0;
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virtual Protocol transport_protocol() const = 0;
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virtual void transport_reparent(TransportClientParent* parent) = 0;
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};
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// Base class for parent of client transport object, used by client transport
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// objects to communicate received data packets, exceptions, and progress
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// notifications.
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struct TransportClientParent
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{
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virtual void transport_recv(BufferAllocated& buf) = 0;
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virtual void transport_needs_send() = 0; // notification that send queue is empty
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virtual void transport_error(const Error::Type fatal_err, const std::string& err_text) = 0;
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virtual void proxy_error(const Error::Type fatal_err, const std::string& err_text) = 0;
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// Return true if we are transporting OpenVPN protocol
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virtual bool transport_is_openvpn_protocol() = 0;
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// progress notifications
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virtual void transport_pre_resolve() = 0;
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virtual void transport_wait_proxy() = 0;
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virtual void transport_wait() = 0;
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virtual void transport_connecting() = 0;
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// Return true if keepalive parameter(s) are enabled.
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virtual bool is_keepalive_enabled() const = 0;
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// Disable keepalive for rest of session, but fetch
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// the keepalive parameters (in seconds).
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virtual void disable_keepalive(unsigned int& keepalive_ping,
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unsigned int& keepalive_timeout) = 0;
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virtual ~TransportClientParent() {}
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};
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// Factory for client transport object.
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struct TransportClientFactory : public virtual RC<thread_unsafe_refcount>
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{
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typedef RCPtr<TransportClientFactory> Ptr;
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virtual TransportClient::Ptr new_transport_client_obj(openvpn_io::io_context& io_context,
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TransportClientParent* parent) = 0;
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virtual bool is_relay() { return false; }
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};
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} // namespace openvpn
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#endif // OPENVPN_TRANSPORT_CLIENT_TRANSBASE_H
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