ObjFW  Artifact [f110c9fc59]

Artifact f110c9fc5992b49b5ca6cf830fbbf18cc9bb07e604dfc0dc0d0c5bd7a3ea5282:

• File src/socket.m — part of check-in [62e2de30b9] at 2015-02-16 08:39:17 on branch trunk — Explicitly pass errno to exceptions

  The old behaviour where the exception would access errno directly on
  creation of the exception was very fragile. The two main problems with
  it were that sometimes it would pick up an errno even though none had
  been set and in other cases that when the exception was created errno
  had already been overridden.

  This also greatly increases errno handling on Win32, especially in
  conjunction with sockets. It can still be improved further, though. (user: js, size: 3012) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#include <errno.h>

/* For some E* -> WSAE* defines */
#import "OFException.h"

#import "socket.h"
#ifdef OF_HAVE_THREADS
# include "threading.h"

static of_once_t onceControl = OF_ONCE_INIT;
#endif
static bool initialized = false;

static void
init(void)
{
#if defined(_WIN32)
	WSADATA wsa;

	if (WSAStartup(MAKEWORD(2, 0), &wsa))
		return;
#elif defined(__wii__)
	if (net_init() < 0)
		return;
#endif

	initialized = true;
}

bool
of_socket_init()
{
#ifdef OF_HAVE_THREADS
	of_once(&onceControl, init);
#else
	if (!initialized)
		init();
#endif

	return initialized;
}

int
of_socket_errno()
{
#ifndef _WIN32
	return errno;
#else
	switch (WSAGetLastError()) {
	case WSAEACCES:
		return EACCES;
	case WSAEADDRINUSE:
		return EADDRINUSE;
	case WSAEADDRNOTAVAIL:
		return EADDRNOTAVAIL;
	case WSAEAFNOSUPPORT:
		return EAFNOSUPPORT;
	case WSAEALREADY:
		return EALREADY;
	case WSAEBADF:
		return EBADF;
	case WSAECONNABORTED:
		return ECONNABORTED;
	case WSAECONNREFUSED:
		return ECONNREFUSED;
	case WSAECONNRESET:
		return ECONNRESET;
	case WSAEDESTADDRREQ:
		return EDESTADDRREQ;
	case WSAEDISCON:
		return EPIPE;
	case WSAEDQUOT:
		return EDQUOT;
	case WSAEFAULT:
		return EFAULT;
	case WSAEHOSTDOWN:
		return EHOSTDOWN;
	case WSAEHOSTUNREACH:
		return EHOSTUNREACH;
	case WSAEINPROGRESS:
		return EINPROGRESS;
	case WSAEINTR:
		return EINTR;
	case WSAEINVAL:
		return EINVAL;
	case WSAEISCONN:
		return EISCONN;
	case WSAELOOP:
		return ELOOP;
	case WSAEMSGSIZE:
		return EMSGSIZE;
	case WSAENAMETOOLONG:
		return ENAMETOOLONG;
	case WSAENETDOWN:
		return ENETDOWN;
	case WSAENETRESET:
		return ENETRESET;
	case WSAENETUNREACH:
		return ENETUNREACH;
	case WSAENOBUFS:
		return ENOBUFS;
	case WSAENOPROTOOPT:
		return ENOPROTOOPT;
	case WSAENOTCONN:
		return ENOTCONN;
	case WSAENOTEMPTY:
		return ENOTEMPTY;
	case WSAENOTSOCK:
		return ENOTSOCK;
	case WSAEOPNOTSUPP:
		return EOPNOTSUPP;
	case WSAEPFNOSUPPORT:
		return EPFNOSUPPORT;
	case WSAEPROCLIM:
		return EPROCLIM;
	case WSAEPROTONOSUPPORT:
		return EPROTONOSUPPORT;
	case WSAEPROTOTYPE:
		return EPROTOTYPE;
	case WSAEREMOTE:
		return EREMOTE;
	case WSAESHUTDOWN:
		return ESHUTDOWN;
	case WSAESOCKTNOSUPPORT:
		return ESOCKTNOSUPPORT;
	case WSAESTALE:
		return ESTALE;
	case WSAETIMEDOUT:
		return ETIMEDOUT;
	case WSAETOOMANYREFS:
		return ETOOMANYREFS;
	case WSAEUSERS:
		return EUSERS;
	case WSAEWOULDBLOCK:
		return EWOULDBLOCK;
	}

	return 0;
#endif
}