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monero/contrib/epee/include/net/net_utils_base.h
moneromooo-monero 2e82b232e8
epee: give virtual dtor to network_address_base 
It has virtual functions and is used as a base class
2017-09-18 12:30:48 +01:00

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// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#ifndef _NET_UTILS_BASE_H_
#define _NET_UTILS_BASE_H_
#include <typeinfo>
#include <boost/asio/io_service.hpp>
#include <boost/uuid/uuid.hpp>
#include "serialization/keyvalue_serialization.h"
#include "net/local_ip.h"
#include "string_tools.h"
#include "misc_log_ex.h"
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "net"
#ifndef MAKE_IP
#define MAKE_IP( a1, a2, a3, a4 ) (a1|(a2<<8)|(a3<<16)|(a4<<24))
#endif
namespace epee
{
namespace net_utils
{
struct network_address_base
{
public:
bool operator==(const network_address_base &other) const { return m_full_id == other.m_full_id; }
bool operator!=(const network_address_base &other) const { return !operator==(other); }
bool operator<(const network_address_base &other) const { return m_full_id < other.m_full_id; }
bool is_same_host(const network_address_base &other) const { return m_host_id == other.m_host_id; }
virtual std::string str() const = 0;
virtual std::string host_str() const = 0;
virtual bool is_loopback() const = 0;
virtual bool is_local() const = 0;
virtual uint8_t get_type_id() const = 0;
protected:
// A very simple non cryptographic hash function by Fowler, Noll, Vo
uint64_t fnv1a(const uint8_t *data, size_t len) const {
uint64_t h = 0xcbf29ce484222325;
while (len--)
h = (h ^ *data++) * 0x100000001b3;
return h;
}
uint64_t m_host_id;
uint64_t m_full_id;
protected:
virtual ~network_address_base() {}
};
struct ipv4_network_address: public network_address_base
{
void init_ids()
{
m_host_id = fnv1a((const uint8_t*)&m_ip, sizeof(m_ip));
m_full_id = fnv1a((const uint8_t*)&m_ip, sizeof(m_ip) + sizeof(m_port));
}
public:
ipv4_network_address(uint32_t ip, uint16_t port): network_address_base(), m_ip(ip), m_port(port) { init_ids(); }
uint32_t ip() const { return m_ip; }
uint16_t port() const { return m_port; }
virtual std::string str() const { return epee::string_tools::get_ip_string_from_int32(m_ip) + ":" + std::to_string(m_port); }
virtual std::string host_str() const { return epee::string_tools::get_ip_string_from_int32(m_ip); }
virtual bool is_loopback() const { return epee::net_utils::is_ip_loopback(m_ip); }
virtual bool is_local() const { return epee::net_utils::is_ip_local(m_ip); }
virtual uint8_t get_type_id() const { return ID; }
public: // serialization
static const uint8_t ID = 1;
#pragma pack(push)
#pragma pack(1)
uint32_t m_ip;
uint16_t m_port;
#pragma pack(pop)
BEGIN_KV_SERIALIZE_MAP()
KV_SERIALIZE(m_ip)
KV_SERIALIZE(m_port)
if (!is_store)
const_cast<ipv4_network_address&>(this_ref).init_ids();
END_KV_SERIALIZE_MAP()
};
class network_address: public boost::shared_ptr<network_address_base>
{
public:
network_address() {}
network_address(ipv4_network_address *address): boost::shared_ptr<network_address_base>(address) {}
bool operator==(const network_address &other) const { return (*this)->operator==(*other); }
bool operator!=(const network_address &other) const { return (*this)->operator!=(*other); }
bool operator<(const network_address &other) const { return (*this)->operator<(*other); }
bool is_same_host(const network_address &other) const { return (*this)->is_same_host(*other); }
std::string str() const { return (*this) ? (*this)->str() : "<none>"; }
std::string host_str() const { return (*this) ? (*this)->host_str() : "<none>"; }
bool is_loopback() const { return (*this)->is_loopback(); }
bool is_local() const { return (*this)->is_local(); }
uint8_t get_type_id() const { return (*this)->get_type_id(); }
template<typename Type> Type &as() { if (get_type_id() != Type::ID) throw std::runtime_error("Bad type"); return *(Type*)get(); }
template<typename Type> const Type &as() const { if (get_type_id() != Type::ID) throw std::runtime_error("Bad type"); return *(const Type*)get(); }
BEGIN_KV_SERIALIZE_MAP()
uint8_t type = is_store ? this_ref.get_type_id() : 0;
epee::serialization::selector<is_store>::serialize(type, stg, hparent_section, "type");
switch (type)
{
case ipv4_network_address::ID:
if (!is_store)
const_cast<network_address&>(this_ref).reset(new ipv4_network_address(0, 0));
KV_SERIALIZE(template as<ipv4_network_address>());
break;
default: MERROR("Unsupported network address type: " << type); return false;
}
END_KV_SERIALIZE_MAP()
};
inline bool create_network_address(network_address &address, const std::string &string, uint16_t default_port = 0)
{
uint32_t ip;
uint16_t port;
if (epee::string_tools::parse_peer_from_string(ip, port, string))
{
if (default_port && !port)
port = default_port;
address.reset(new ipv4_network_address(ip, port));
return true;
}
return false;
}
/************************************************************************/
/* */
/************************************************************************/
struct connection_context_base
{
const boost::uuids::uuid m_connection_id;
const network_address m_remote_address;
const bool m_is_income;
const time_t m_started;
time_t m_last_recv;
time_t m_last_send;
uint64_t m_recv_cnt;
uint64_t m_send_cnt;
double m_current_speed_down;
double m_current_speed_up;
connection_context_base(boost::uuids::uuid connection_id,
const network_address &remote_address, bool is_income,
time_t last_recv = 0, time_t last_send = 0,
uint64_t recv_cnt = 0, uint64_t send_cnt = 0):
m_connection_id(connection_id),
m_remote_address(remote_address),
m_is_income(is_income),
m_started(time(NULL)),
m_last_recv(last_recv),
m_last_send(last_send),
m_recv_cnt(recv_cnt),
m_send_cnt(send_cnt),
m_current_speed_down(0),
m_current_speed_up(0)
{}
connection_context_base(): m_connection_id(),
m_remote_address(new ipv4_network_address(0,0)),
m_is_income(false),
m_started(time(NULL)),
m_last_recv(0),
m_last_send(0),
m_recv_cnt(0),
m_send_cnt(0),
m_current_speed_down(0),
m_current_speed_up(0)
{}
connection_context_base& operator=(const connection_context_base& a)
{
set_details(a.m_connection_id, a.m_remote_address, a.m_is_income);
return *this;
}
private:
template<class t_protocol_handler>
friend class connection;
void set_details(boost::uuids::uuid connection_id, const network_address &remote_address, bool is_income)
{
this->~connection_context_base();
new(this) connection_context_base(connection_id, remote_address, is_income);
}
};
/************************************************************************/
/* */
/************************************************************************/
struct i_service_endpoint
{
virtual bool do_send(const void* ptr, size_t cb)=0;
virtual bool close()=0;
virtual bool call_run_once_service_io()=0;
virtual bool request_callback()=0;
virtual boost::asio::io_service& get_io_service()=0;
//protect from deletion connection object(with protocol instance) during external call "invoke"
virtual bool add_ref()=0;
virtual bool release()=0;
protected:
virtual ~i_service_endpoint() noexcept(false) {}
};
//some helpers
inline
std::string print_connection_context(const connection_context_base& ctx)
{
std::stringstream ss;
ss << ctx.m_remote_address->str() << " " << epee::string_tools::get_str_from_guid_a(ctx.m_connection_id) << (ctx.m_is_income ? " INC":" OUT");
return ss.str();
}
inline
std::string print_connection_context_short(const connection_context_base& ctx)
{
std::stringstream ss;
ss << ctx.m_remote_address->str() << (ctx.m_is_income ? " INC":" OUT");
return ss.str();
}
inline MAKE_LOGGABLE(connection_context_base, ct, os)
{
os << "[" << epee::net_utils::print_connection_context_short(ct) << "] ";
return os;
}
#define LOG_ERROR_CC(ct, message) MERROR(ct << message)
#define LOG_WARNING_CC(ct, message) MWARNING(ct << message)
#define LOG_INFO_CC(ct, message) MINFO(ct << message)
#define LOG_DEBUG_CC(ct, message) MDEBUG(ct << message)
#define LOG_TRACE_CC(ct, message) MTRACE(ct << message)
#define LOG_CC(level, ct, message) MLOG(level, ct << message)
#define LOG_PRINT_CC_L0(ct, message) LOG_PRINT_L0(ct << message)
#define LOG_PRINT_CC_L1(ct, message) LOG_PRINT_L1(ct << message)
#define LOG_PRINT_CC_L2(ct, message) LOG_PRINT_L2(ct << message)
#define LOG_PRINT_CC_L3(ct, message) LOG_PRINT_L3(ct << message)
#define LOG_PRINT_CC_L4(ct, message) LOG_PRINT_L4(ct << message)
#define LOG_PRINT_CCONTEXT_L0(message) LOG_PRINT_CC_L0(context, message)
#define LOG_PRINT_CCONTEXT_L1(message) LOG_PRINT_CC_L1(context, message)
#define LOG_PRINT_CCONTEXT_L2(message) LOG_PRINT_CC_L2(context, message)
#define LOG_PRINT_CCONTEXT_L3(message) LOG_PRINT_CC_L3(context, message)
#define LOG_ERROR_CCONTEXT(message) LOG_ERROR_CC(context, message)
#define CHECK_AND_ASSERT_MES_CC(condition, return_val, err_message) CHECK_AND_ASSERT_MES(condition, return_val, "[" << epee::net_utils::print_connection_context_short(context) << "]" << err_message)
}
}
#endif //_NET_UTILS_BASE_H_
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