532 lines
17 KiB
C++
532 lines
17 KiB
C++
/**
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@file
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@author from CrypoNote (see copyright below; Andrey N. Sabelnikov)
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@monero rfree
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@brief the connection templated-class for one peer connection
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*/
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// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef _ABSTRACT_TCP_SERVER2_H_
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#define _ABSTRACT_TCP_SERVER2_H_
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#include <string>
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#include <vector>
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#include <boost/noncopyable.hpp>
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#include <boost/shared_ptr.hpp>
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#include <atomic>
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#include <cassert>
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#include <map>
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#include <memory>
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#include <condition_variable>
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#include <boost/asio.hpp>
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#include <boost/asio/ssl.hpp>
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#include <boost/asio/strand.hpp>
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#include <boost/asio/steady_timer.hpp>
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#include <boost/array.hpp>
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#include <boost/enable_shared_from_this.hpp>
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#include <boost/thread/thread.hpp>
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#include <boost/optional.hpp>
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#include "byte_slice.h"
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#include "net_utils_base.h"
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#include "syncobj.h"
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#include "connection_basic.hpp"
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#include "network_throttle-detail.hpp"
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#undef MONERO_DEFAULT_LOG_CATEGORY
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#define MONERO_DEFAULT_LOG_CATEGORY "net"
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#define ABSTRACT_SERVER_SEND_QUE_MAX_COUNT 1000
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namespace epee
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{
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namespace net_utils
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{
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struct i_connection_filter
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{
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virtual bool is_remote_host_allowed(const epee::net_utils::network_address &address, time_t *t = NULL)=0;
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protected:
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virtual ~i_connection_filter(){}
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};
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/************************************************************************/
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/* */
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/************************************************************************/
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/// Represents a single connection from a client.
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template<class t_protocol_handler>
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class connection
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: public boost::enable_shared_from_this<connection<t_protocol_handler> >,
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private boost::noncopyable,
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public i_service_endpoint,
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public connection_basic
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{
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public:
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typedef typename t_protocol_handler::connection_context t_connection_context;
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private:
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using connection_t = connection<t_protocol_handler>;
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using connection_ptr = boost::shared_ptr<connection_t>;
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using ssl_support_t = epee::net_utils::ssl_support_t;
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using timer_t = boost::asio::steady_timer;
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using duration_t = timer_t::duration;
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using ec_t = boost::system::error_code;
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using handshake_t = boost::asio::ssl::stream_base::handshake_type;
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using io_context_t = boost::asio::io_service;
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using strand_t = boost::asio::io_service::strand;
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using socket_t = boost::asio::ip::tcp::socket;
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using network_throttle_t = epee::net_utils::network_throttle;
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using network_throttle_manager_t = epee::net_utils::network_throttle_manager;
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unsigned int host_count(int delta = 0);
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duration_t get_default_timeout();
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duration_t get_timeout_from_bytes_read(size_t bytes) const;
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void state_status_check();
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void start_timer(duration_t duration, bool add = {});
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void async_wait_timer();
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void cancel_timer();
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void start_handshake();
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void start_read();
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void start_write();
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void start_shutdown();
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void cancel_socket();
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void cancel_handler();
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void interrupt();
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void on_interrupted();
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void terminate();
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void on_terminating();
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bool send(epee::byte_slice message);
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bool start_internal(
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bool is_income,
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bool is_multithreaded,
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boost::optional<network_address> real_remote
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);
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enum status_t {
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TERMINATED,
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RUNNING,
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INTERRUPTED,
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TERMINATING,
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WASTED,
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};
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struct state_t {
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struct stat_t {
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struct {
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network_throttle_t throttle{"speed_in", "throttle_speed_in"};
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} in;
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struct {
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network_throttle_t throttle{"speed_out", "throttle_speed_out"};
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} out;
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};
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struct data_t {
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struct {
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std::array<uint8_t, 0x2000> buffer;
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} read;
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struct {
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std::deque<epee::byte_slice> queue;
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bool wait_consume;
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} write;
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};
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struct ssl_t {
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bool enabled;
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bool forced;
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bool detected;
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bool handshaked;
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};
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struct socket_status_t {
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bool connected;
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bool wait_handshake;
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bool cancel_handshake;
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bool wait_read;
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bool handle_read;
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bool cancel_read;
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bool wait_write;
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bool handle_write;
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bool cancel_write;
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bool wait_shutdown;
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bool cancel_shutdown;
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};
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struct timer_status_t {
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bool wait_expire;
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bool cancel_expire;
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bool reset_expire;
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};
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struct timers_status_t {
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struct throttle_t {
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timer_status_t in;
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timer_status_t out;
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};
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timer_status_t general;
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throttle_t throttle;
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};
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struct protocol_t {
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size_t reference_counter;
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bool released;
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bool initialized;
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bool wait_release;
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bool wait_init;
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size_t wait_callback;
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};
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std::mutex lock;
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std::condition_variable_any condition;
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status_t status;
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socket_status_t socket;
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ssl_t ssl;
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timers_status_t timers;
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protocol_t protocol;
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stat_t stat;
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data_t data;
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};
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struct timers_t {
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timers_t(io_context_t &io_context):
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general(io_context),
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throttle(io_context)
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{}
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struct throttle_t {
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throttle_t(io_context_t &io_context):
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in(io_context),
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out(io_context)
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{}
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timer_t in;
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timer_t out;
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};
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timer_t general;
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throttle_t throttle;
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};
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io_context_t &m_io_context;
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t_connection_type m_connection_type;
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t_connection_context m_conn_context{};
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strand_t m_strand;
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timers_t m_timers;
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connection_ptr self{};
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bool m_local{};
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std::string m_host{};
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state_t m_state{};
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t_protocol_handler m_handler;
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public:
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struct shared_state : connection_basic_shared_state, t_protocol_handler::config_type
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{
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shared_state()
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: connection_basic_shared_state(), t_protocol_handler::config_type(), pfilter(nullptr), stop_signal_sent(false)
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{}
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i_connection_filter* pfilter;
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bool stop_signal_sent;
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};
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/// Construct a connection with the given io_service.
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explicit connection( boost::asio::io_service& io_service,
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std::shared_ptr<shared_state> state,
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t_connection_type connection_type,
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epee::net_utils::ssl_support_t ssl_support);
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explicit connection( boost::asio::ip::tcp::socket&& sock,
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std::shared_ptr<shared_state> state,
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t_connection_type connection_type,
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epee::net_utils::ssl_support_t ssl_support);
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virtual ~connection() noexcept(false);
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/// Start the first asynchronous operation for the connection.
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bool start(bool is_income, bool is_multithreaded);
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// `real_remote` is the actual endpoint (if connection is to proxy, etc.)
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bool start(bool is_income, bool is_multithreaded, network_address real_remote);
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void get_context(t_connection_context& context_){context_ = m_conn_context;}
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void call_back_starter();
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void save_dbg_log();
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bool speed_limit_is_enabled() const; ///< tells us should we be sleeping here (e.g. do not sleep on RPC connections)
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bool cancel();
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private:
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//----------------- i_service_endpoint ---------------------
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virtual bool do_send(byte_slice message); ///< (see do_send from i_service_endpoint)
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virtual bool send_done();
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virtual bool close();
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virtual bool call_run_once_service_io();
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virtual bool request_callback();
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virtual boost::asio::io_service& get_io_service();
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virtual bool add_ref();
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virtual bool release();
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//------------------------------------------------------
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public:
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void setRpcStation();
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};
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/************************************************************************/
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/* */
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/************************************************************************/
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template<class t_protocol_handler>
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class boosted_tcp_server
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: private boost::noncopyable
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{
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enum try_connect_result_t
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{
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CONNECT_SUCCESS,
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CONNECT_FAILURE,
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CONNECT_NO_SSL,
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};
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public:
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typedef boost::shared_ptr<connection<t_protocol_handler> > connection_ptr;
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typedef typename t_protocol_handler::connection_context t_connection_context;
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/// Construct the server to listen on the specified TCP address and port, and
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/// serve up files from the given directory.
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boosted_tcp_server(t_connection_type connection_type);
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explicit boosted_tcp_server(boost::asio::io_service& external_io_service, t_connection_type connection_type);
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~boosted_tcp_server();
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std::map<std::string, t_connection_type> server_type_map;
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void create_server_type_map();
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bool init_server(uint32_t port, const std::string& address = "0.0.0.0",
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uint32_t port_ipv6 = 0, const std::string& address_ipv6 = "::", bool use_ipv6 = false, bool require_ipv4 = true,
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ssl_options_t ssl_options = ssl_support_t::e_ssl_support_autodetect);
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bool init_server(const std::string port, const std::string& address = "0.0.0.0",
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const std::string port_ipv6 = "", const std::string address_ipv6 = "::", bool use_ipv6 = false, bool require_ipv4 = true,
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ssl_options_t ssl_options = ssl_support_t::e_ssl_support_autodetect);
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/// Run the server's io_service loop.
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bool run_server(size_t threads_count, bool wait = true, const boost::thread::attributes& attrs = boost::thread::attributes());
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/// wait for service workers stop
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bool timed_wait_server_stop(uint64_t wait_mseconds);
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/// Stop the server.
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void send_stop_signal();
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bool is_stop_signal_sent() const noexcept { return m_stop_signal_sent; };
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const std::atomic<bool>& get_stop_signal() const noexcept { return m_stop_signal_sent; }
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void set_threads_prefix(const std::string& prefix_name);
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bool deinit_server(){return true;}
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size_t get_threads_count(){return m_threads_count;}
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void set_connection_filter(i_connection_filter* pfilter);
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void set_default_remote(epee::net_utils::network_address remote)
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{
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default_remote = std::move(remote);
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}
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bool add_connection(t_connection_context& out, boost::asio::ip::tcp::socket&& sock, network_address real_remote, epee::net_utils::ssl_support_t ssl_support = epee::net_utils::ssl_support_t::e_ssl_support_autodetect);
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try_connect_result_t try_connect(connection_ptr new_connection_l, const std::string& adr, const std::string& port, boost::asio::ip::tcp::socket &sock_, const boost::asio::ip::tcp::endpoint &remote_endpoint, const std::string &bind_ip, uint32_t conn_timeout, epee::net_utils::ssl_support_t ssl_support);
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bool connect(const std::string& adr, const std::string& port, uint32_t conn_timeot, t_connection_context& cn, const std::string& bind_ip = "0.0.0.0", epee::net_utils::ssl_support_t ssl_support = epee::net_utils::ssl_support_t::e_ssl_support_autodetect);
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template<class t_callback>
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bool connect_async(const std::string& adr, const std::string& port, uint32_t conn_timeot, const t_callback &cb, const std::string& bind_ip = "0.0.0.0", epee::net_utils::ssl_support_t ssl_support = epee::net_utils::ssl_support_t::e_ssl_support_autodetect);
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boost::asio::ssl::context& get_ssl_context() noexcept
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{
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assert(m_state != nullptr);
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return m_state->ssl_context;
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}
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typename t_protocol_handler::config_type& get_config_object()
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{
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assert(m_state != nullptr); // always set in constructor
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return *m_state;
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}
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std::shared_ptr<typename t_protocol_handler::config_type> get_config_shared()
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{
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assert(m_state != nullptr); // always set in constructor
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return {m_state};
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}
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int get_binded_port(){return m_port;}
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int get_binded_port_ipv6(){return m_port_ipv6;}
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long get_connections_count() const
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{
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assert(m_state != nullptr); // always set in constructor
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auto connections_count = m_state->sock_count > 0 ? (m_state->sock_count - 1) : 0; // Socket count minus listening socket
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return connections_count;
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}
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boost::asio::io_service& get_io_service(){return io_service_;}
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struct idle_callback_conext_base
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{
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virtual ~idle_callback_conext_base(){}
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virtual bool call_handler(){return true;}
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idle_callback_conext_base(boost::asio::io_service& io_serice):
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m_timer(io_serice)
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{}
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boost::asio::deadline_timer m_timer;
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};
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template <class t_handler>
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struct idle_callback_conext: public idle_callback_conext_base
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{
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idle_callback_conext(boost::asio::io_service& io_serice, t_handler& h, uint64_t period):
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idle_callback_conext_base(io_serice),
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m_handler(h)
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{this->m_period = period;}
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t_handler m_handler;
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virtual bool call_handler()
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{
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return m_handler();
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}
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uint64_t m_period;
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};
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template<class t_handler>
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bool add_idle_handler(t_handler t_callback, uint64_t timeout_ms)
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{
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boost::shared_ptr<idle_callback_conext<t_handler>> ptr(new idle_callback_conext<t_handler>(io_service_, t_callback, timeout_ms));
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//needed call handler here ?...
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ptr->m_timer.expires_from_now(boost::posix_time::milliseconds(ptr->m_period));
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ptr->m_timer.async_wait(boost::bind(&boosted_tcp_server<t_protocol_handler>::global_timer_handler<t_handler>, this, ptr));
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return true;
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}
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template<class t_handler>
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bool global_timer_handler(/*const boost::system::error_code& err, */boost::shared_ptr<idle_callback_conext<t_handler>> ptr)
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{
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//if handler return false - he don't want to be called anymore
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if(!ptr->call_handler())
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return true;
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ptr->m_timer.expires_from_now(boost::posix_time::milliseconds(ptr->m_period));
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ptr->m_timer.async_wait(boost::bind(&boosted_tcp_server<t_protocol_handler>::global_timer_handler<t_handler>, this, ptr));
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return true;
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}
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template<class t_handler>
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bool async_call(t_handler t_callback)
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{
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io_service_.post(t_callback);
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return true;
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}
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private:
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/// Run the server's io_service loop.
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bool worker_thread();
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/// Handle completion of an asynchronous accept operation.
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void handle_accept_ipv4(const boost::system::error_code& e);
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void handle_accept_ipv6(const boost::system::error_code& e);
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void handle_accept(const boost::system::error_code& e, bool ipv6 = false);
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bool is_thread_worker();
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const std::shared_ptr<typename connection<t_protocol_handler>::shared_state> m_state;
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/// The io_service used to perform asynchronous operations.
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struct worker
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{
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worker()
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: io_service(), work(io_service)
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{}
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boost::asio::io_service io_service;
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boost::asio::io_service::work work;
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};
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std::unique_ptr<worker> m_io_service_local_instance;
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boost::asio::io_service& io_service_;
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/// Acceptor used to listen for incoming connections.
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boost::asio::ip::tcp::acceptor acceptor_;
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boost::asio::ip::tcp::acceptor acceptor_ipv6;
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epee::net_utils::network_address default_remote;
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std::atomic<bool> m_stop_signal_sent;
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uint32_t m_port;
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uint32_t m_port_ipv6;
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std::string m_address;
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std::string m_address_ipv6;
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bool m_use_ipv6;
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bool m_require_ipv4;
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std::string m_thread_name_prefix; //TODO: change to enum server_type, now used
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size_t m_threads_count;
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std::vector<boost::shared_ptr<boost::thread> > m_threads;
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boost::thread::id m_main_thread_id;
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critical_section m_threads_lock;
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std::atomic<uint32_t> m_thread_index;
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t_connection_type m_connection_type;
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/// The next connection to be accepted
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connection_ptr new_connection_;
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connection_ptr new_connection_ipv6;
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boost::mutex connections_mutex;
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std::set<connection_ptr> connections_;
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}; // class <>boosted_tcp_server
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} // namespace
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} // namespace
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#include "abstract_tcp_server2.inl"
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#endif
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