aboutsummaryrefslogtreecommitdiffstats
path: root/src/system/SocketError.hxx
blob: 2b8332715dafc27b5815aa211ef50312611643d2 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
/*
 * 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 "util/Error.hxx"

#ifdef WIN32
#include <winsock2.h>
typedef DWORD socket_error_t;
#else
#include <errno.h>
typedef int socket_error_t;
#endif

/**
 * A #Domain for #Error for socket I/O errors.  The code is an errno
 * value (or WSAGetLastError() on Windows).
 */
extern const class Domain socket_domain;

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());
#else
	explicit SocketErrorMessage(socket_error_t code=GetSocketError());
#endif

	operator const char *() const {
		return msg;
	}
};

static inline void
SetSocketError(Error &error, socket_error_t code)
{
	const SocketErrorMessage msg(code);
	error.Set(socket_domain, code, msg);
}

static inline void
SetSocketError(Error &error)
{
	SetSocketError(error, GetSocketError());
}

gcc_const
static inline Error
NewSocketError(socket_error_t code)
{
	Error error;
	SetSocketError(error, code);
	return error;
}

gcc_pure
static inline Error
NewSocketError()
{
	return NewSocketError(GetSocketError());
}

#endif