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// -*- C++ -*-
// Module: Log4CPLUS
// File: socket.h
// Created: 1/2010
// Author: Vaclav Haisman
//
//
// Copyright (C) 2010-2017, Vaclav Haisman. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modifica-
// tion, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. 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.
//
// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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
// APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
// DING, 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.
/** @file
* This header contains declaration internal to log4cplus. They must never be
* visible from user accesible headers or exported in DLL/shared libray.
*/
#ifndef LOG4CPLUS_INTERNAL_SOCKET_H_
#define LOG4CPLUS_INTERNAL_SOCKET_H_
#include <log4cplus/config.hxx>
#if defined (LOG4CPLUS_HAVE_PRAGMA_ONCE)
#pragma once
#endif
#if ! defined (INSIDE_LOG4CPLUS)
# error "This header must not be be used outside log4cplus' implementation files."
#endif
#if defined(_WIN32)
#include <log4cplus/config/windowsh-inc.h>
#endif
#include <log4cplus/helpers/socket.h>
#include <cerrno>
#ifdef LOG4CPLUS_HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef LOG4CPLUS_HAVE_UNISTD_H
#include <unistd.h>
#endif
#if defined (LOG4CPLUS_HAVE_NETDB_H)
#include <netdb.h>
#endif
namespace log4cplus {
namespace helpers {
#if defined(_WIN32)
typedef SOCKET os_socket_type;
os_socket_type const INVALID_OS_SOCKET_VALUE = INVALID_SOCKET;
struct ADDRINFOT_deleter
{
void
operator () (ADDRINFOA * ptr) const
{
FreeAddrInfoA(ptr);
}
void
operator () (ADDRINFOW * ptr) const
{
FreeAddrInfoW(ptr);
}
};
struct socket_closer
{
void
operator () (SOCKET s)
{
if (s && s != INVALID_OS_SOCKET_VALUE)
{
DWORD const eno = WSAGetLastError();
::closesocket(s);
WSASetLastError(eno);
}
}
};
#else
typedef int os_socket_type;
os_socket_type const INVALID_OS_SOCKET_VALUE = -1;
struct addrinfo_deleter
{
void
operator () (struct addrinfo * ptr) const
{
freeaddrinfo(ptr);
}
};
struct socket_closer
{
void
operator () (os_socket_type s)
{
if (s >= 0)
{
int const eno = errno;
close(s);
errno = eno;
}
}
};
#endif
struct socket_holder
{
os_socket_type sock;
socket_holder()
: sock(INVALID_OS_SOCKET_VALUE)
{ }
socket_holder(os_socket_type s)
: sock(s)
{ }
~socket_holder()
{
socket_closer()(sock);
}
void
reset(os_socket_type s = INVALID_OS_SOCKET_VALUE)
{
if (sock != INVALID_OS_SOCKET_VALUE)
socket_closer()(sock);
sock = s;
}
os_socket_type
detach()
{
os_socket_type s = sock;
sock = INVALID_OS_SOCKET_VALUE;
return s;
}
socket_holder(socket_holder &&) = delete;
socket_holder(socket_holder const &) = delete;
socket_holder operator = (socket_holder &&) = delete;
socket_holder operator = (socket_holder const &) = delete;
};
static inline
os_socket_type
to_os_socket (SOCKET_TYPE const & x)
{
return static_cast<os_socket_type>(x);
}
static inline
SOCKET_TYPE
to_log4cplus_socket (os_socket_type const & x)
{
return static_cast<SOCKET_TYPE>(x);
}
static inline
void
set_last_socket_error (int err)
{
errno = err;
}
static inline
int
get_last_socket_error ()
{
return errno;
}
} // namespace helpers {
} // namespace log4cplus {
#endif // LOG4CPLUS_INTERNAL_SOCKET_H_
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