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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_SOCKET_ERROR_HXX
#define MPD_SOCKET_ERROR_HXX
#include "gcc.h"
#include <glib.h>
#ifdef WIN32
#include <winsock2.h>
typedef DWORD socket_error_t;
#else
#include <errno.h>
typedef int socket_error_t;
#endif
/**
* A GQuark for GError for socket I/O errors. The code is an errno
* value (or WSAGetLastError() on Windows).
*/
gcc_const
static inline GQuark
SocketErrorQuark(void)
{
return g_quark_from_static_string("socket");
}
gcc_pure
static inline socket_error_t
GetSocketError()
{
#ifdef WIN32
return WSAGetLastError();
#else
return errno;
#endif
}
gcc_const
static inline bool
IsSocketErrorAgain(socket_error_t code)
{
#ifdef WIN32
return code == WSAEINPROGRESS;
#else
return code == EAGAIN;
#endif
}
gcc_const
static inline bool
IsSocketErrorInterruped(socket_error_t code)
{
#ifdef WIN32
return code == WSAEINTR;
#else
return code == EINTR;
#endif
}
gcc_const
static inline bool
IsSocketErrorClosed(socket_error_t code)
{
#ifdef WIN32
return code == WSAECONNRESET;
#else
return code == EPIPE || code == ECONNRESET;
#endif
}
/**
* Helper class that formats a socket error message into a
* human-readable string. On Windows, a buffer is necessary for this,
* and this class hosts the buffer.
*/
class SocketErrorMessage {
#ifdef WIN32
char msg[256];
#else
const char *const msg;
#endif
public:
#ifdef WIN32
explicit SocketErrorMessage(socket_error_t code=GetSocketError()) {
DWORD nbytes = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS |
FORMAT_MESSAGE_MAX_WIDTH_MASK,
NULL, code, 0,
(LPSTR)msg, sizeof(msg), NULL);
if (nbytes == 0)
strcpy(msg, "Unknown error");
}
#else
explicit SocketErrorMessage(socket_error_t code=GetSocketError())
:msg(g_strerror(code)) {}
#endif
operator const char *() const {
return msg;
}
};
static inline void
SetSocketError(GError **error_r, socket_error_t code)
{
#ifdef WIN32
if (error_r == NULL)
return;
#endif
const SocketErrorMessage msg(code);
g_set_error_literal(error_r, SocketErrorQuark(), code, msg);
}
static inline void
SetSocketError(GError **error_r)
{
SetSocketError(error_r, GetSocketError());
}
gcc_malloc
static inline GError *
NewSocketError(socket_error_t code)
{
const SocketErrorMessage msg(code);
return g_error_new_literal(SocketErrorQuark(), code, msg);
}
gcc_malloc
static inline GError *
NewSocketError()
{
return NewSocketError(GetSocketError());
}
#endif
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