/*
* Copyright (c) 2008-2024 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* 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 Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#ifndef _XOPEN_SOURCE_EXTENDED
# define _XOPEN_SOURCE_EXTENDED
#endif
#define _HPUX_ALT_XOPEN_SOCKET_API
#include <errno.h>
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
#import "OFDatagramSocket.h"
#import "OFData.h"
#import "OFRunLoop.h"
#import "OFRunLoop+Private.h"
#import "OFSocket.h"
#import "OFSocket+Private.h"
#import "OFAlreadyOpenException.h"
#import "OFGetOptionFailedException.h"
#import "OFInitializationFailedException.h"
#import "OFNotOpenException.h"
#import "OFOutOfMemoryException.h"
#import "OFOutOfRangeException.h"
#import "OFReadFailedException.h"
#import "OFSetOptionFailedException.h"
#import "OFSetOptionFailedException.h"
#import "OFWriteFailedException.h"
#if defined(OF_AMIGAOS) && !defined(UNIQUE_ID)
# define UNIQUE_ID -1
#endif
@implementation OFDatagramSocket
@synthesize delegate = _delegate;
+ (void)initialize
{
if (self != [OFDatagramSocket class])
return;
if (!_OFSocketInit())
@throw [OFInitializationFailedException
exceptionWithClass: self];
}
+ (instancetype)socket
{
return [[[self alloc] init] autorelease];
}
- (instancetype)init
{
self = [super init];
@try {
if (self.class == [OFDatagramSocket class]) {
[self doesNotRecognizeSelector: _cmd];
abort();
}
_socket = OFInvalidSocketHandle;
#ifdef OF_HAVE_AMIGAOS
_socketID = -1;
#endif
_canBlock = true;
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
if (_socket != OFInvalidSocketHandle)
[self close];
[super dealloc];
}
- (id)copy
{
return [self retain];
}
- (bool)canBlock
{
return _canBlock;
}
- (void)setCanBlock: (bool)canBlock
{
#if defined(HAVE_FCNTL)
int flags = fcntl(_socket, F_GETFL, 0);
if (flags == -1)
@throw [OFSetOptionFailedException exceptionWithObject: self
errNo: errno];
if (canBlock)
flags &= ~O_NONBLOCK;
else
flags |= O_NONBLOCK;
if (fcntl(_socket, F_SETFL, flags) == -1)
@throw [OFSetOptionFailedException exceptionWithObject: self
errNo: errno];
_canBlock = canBlock;
#elif defined(OF_WINDOWS)
u_long v = !canBlock;
if (ioctlsocket(_socket, FIONBIO, &v) == SOCKET_ERROR)
@throw [OFSetOptionFailedException
exceptionWithObject: self
errNo: _OFSocketErrNo()];
_canBlock = canBlock;
#else
OF_UNRECOGNIZED_SELECTOR
#endif
}
- (void)setCanSendToBroadcastAddresses: (bool)canSendToBroadcastAddresses
{
int v = canSendToBroadcastAddresses;
if (setsockopt(_socket, SOL_SOCKET, SO_BROADCAST,
(char *)&v, (socklen_t)sizeof(v)) != 0)
@throw [OFSetOptionFailedException
exceptionWithObject: self
errNo: _OFSocketErrNo()];
#ifdef OF_WII
_canSendToBroadcastAddresses = canSendToBroadcastAddresses;
#endif
}
- (bool)canSendToBroadcastAddresses
{
#ifndef OF_WII
int v;
socklen_t len = sizeof(v);
if (getsockopt(_socket, SOL_SOCKET, SO_BROADCAST,
(char *)&v, &len) != 0 || len != sizeof(v))
@throw [OFGetOptionFailedException
exceptionWithObject: self
errNo: _OFSocketErrNo()];
return v;
#else
return _canSendToBroadcastAddresses;
#endif
}
- (size_t)receiveIntoBuffer: (void *)buffer
length: (size_t)length
sender: (OFSocketAddress *)sender
{
ssize_t ret;
if (_socket == OFInvalidSocketHandle)
@throw [OFNotOpenException exceptionWithObject: self];
if (sender != NULL)
sender->length = (socklen_t)sizeof(sender->sockaddr);
#ifndef OF_WINDOWS
if ((ret = recvfrom(_socket, buffer, length, 0,
(sender != NULL ? (struct sockaddr *)&sender->sockaddr : NULL),
(sender != NULL ? &sender->length : NULL))) < 0)
@throw [OFReadFailedException
exceptionWithObject: self
requestedLength: length
errNo: _OFSocketErrNo()];
#else
if (length > INT_MAX)
@throw [OFOutOfRangeException exception];
if ((ret = recvfrom(_socket, buffer, (int)length, 0,
(sender != NULL ? (struct sockaddr *)&sender->sockaddr : NULL),
(sender != NULL ? &sender->length : NULL))) < 0)
@throw [OFReadFailedException
exceptionWithObject: self
requestedLength: length
errNo: _OFSocketErrNo()];
#endif
if (sender != NULL) {
struct sockaddr *sa = (struct sockaddr *)&sender->sockaddr;
if (sender->length >= (socklen_t)sizeof(sa->sa_family)) {
switch (sa->sa_family) {
case AF_INET:
sender->family = OFSocketAddressFamilyIPv4;
break;
#ifdef OF_HAVE_IPV6
case AF_INET6:
sender->family = OFSocketAddressFamilyIPv6;
break;
#endif
#ifdef OF_HAVE_UNIX_SOCKETS
case AF_UNIX:
sender->family = OFSocketAddressFamilyUNIX;
break;
#endif
#ifdef OF_HAVE_IPX
case AF_IPX:
sender->family = OFSocketAddressFamilyIPX;
break;
#endif
#ifdef OF_HAVE_APPLETALK
case AF_APPLETALK:
sender->family = OFSocketAddressFamilyAppleTalk;
break;
#endif
default:
sender->family = OFSocketAddressFamilyUnknown;
break;
}
} else
sender->family = OFSocketAddressFamilyUnknown;
}
return ret;
}
- (void)asyncReceiveIntoBuffer: (void *)buffer length: (size_t)length
{
[self asyncReceiveIntoBuffer: buffer
length: length
runLoopMode: OFDefaultRunLoopMode];
}
- (void)asyncReceiveIntoBuffer: (void *)buffer
length: (size_t)length
runLoopMode: (OFRunLoopMode)runLoopMode
{
[OFRunLoop of_addAsyncReceiveForDatagramSocket: self
buffer: buffer
length: length
mode: runLoopMode
# ifdef OF_HAVE_BLOCKS
block: NULL
# endif
delegate: _delegate];
}
#ifdef OF_HAVE_BLOCKS
- (void)asyncReceiveIntoBuffer: (void *)buffer
length: (size_t)length
block: (OFDatagramSocketAsyncReceiveBlock)block
{
[self asyncReceiveIntoBuffer: buffer
length: length
runLoopMode: OFDefaultRunLoopMode
block: block];
}
- (void)asyncReceiveIntoBuffer: (void *)buffer
length: (size_t)length
runLoopMode: (OFRunLoopMode)runLoopMode
block: (OFDatagramSocketAsyncReceiveBlock)block
{
[OFRunLoop of_addAsyncReceiveForDatagramSocket: self
buffer: buffer
length: length
mode: runLoopMode
block: block
delegate: nil];
}
#endif
- (void)sendBuffer: (const void *)buffer
length: (size_t)length
receiver: (const OFSocketAddress *)receiver
{
if (_socket == OFInvalidSocketHandle)
@throw [OFNotOpenException exceptionWithObject: self];
#ifndef OF_WINDOWS
ssize_t bytesWritten;
if (length > SSIZE_MAX)
@throw [OFOutOfRangeException exception];
if ((bytesWritten = sendto(_socket, (void *)buffer, length, 0,
(struct sockaddr *)&receiver->sockaddr, receiver->length)) < 0)
@throw [OFWriteFailedException
exceptionWithObject: self
requestedLength: length
bytesWritten: 0
errNo: _OFSocketErrNo()];
#else
int bytesWritten;
if (length > INT_MAX)
@throw [OFOutOfRangeException exception];
if ((bytesWritten = sendto(_socket, buffer, (int)length, 0,
(struct sockaddr *)&receiver->sockaddr, receiver->length)) < 0)
@throw [OFWriteFailedException
exceptionWithObject: self
requestedLength: length
bytesWritten: 0
errNo: _OFSocketErrNo()];
#endif
if ((size_t)bytesWritten != length)
@throw [OFWriteFailedException exceptionWithObject: self
requestedLength: length
bytesWritten: bytesWritten
errNo: 0];
}
- (void)asyncSendData: (OFData *)data
receiver: (const OFSocketAddress *)receiver
{
[self asyncSendData: data
receiver: receiver
runLoopMode: OFDefaultRunLoopMode];
}
- (void)asyncSendData: (OFData *)data
receiver: (const OFSocketAddress *)receiver
runLoopMode: (OFRunLoopMode)runLoopMode
{
[OFRunLoop of_addAsyncSendForDatagramSocket: self
data: data
receiver: receiver
mode: runLoopMode
# ifdef OF_HAVE_BLOCKS
block: NULL
# endif
delegate: _delegate];
}
#ifdef OF_HAVE_BLOCKS
- (void)asyncSendData: (OFData *)data
receiver: (const OFSocketAddress *)receiver
block: (OFDatagramSocketAsyncSendDataBlock)block
{
[self asyncSendData: data
receiver: receiver
runLoopMode: OFDefaultRunLoopMode
block: block];
}
- (void)asyncSendData: (OFData *)data
receiver: (const OFSocketAddress *)receiver
runLoopMode: (OFRunLoopMode)runLoopMode
block: (OFDatagramSocketAsyncSendDataBlock)block
{
[OFRunLoop of_addAsyncSendForDatagramSocket: self
data: data
receiver: receiver
mode: runLoopMode
block: block
delegate: nil];
}
#endif
- (void)cancelAsyncRequests
{
[OFRunLoop of_cancelAsyncRequestsForObject: self
mode: OFDefaultRunLoopMode];
}
- (int)fileDescriptorForReading
{
#ifndef OF_WINDOWS
return _socket;
#else
if (_socket == OFInvalidSocketHandle)
return -1;
if (_socket > INT_MAX)
@throw [OFOutOfRangeException exception];
return (int)_socket;
#endif
}
- (int)fileDescriptorForWriting
{
#ifndef OF_WINDOWS
return _socket;
#else
if (_socket == OFInvalidSocketHandle)
return -1;
if (_socket > INT_MAX)
@throw [OFOutOfRangeException exception];
return (int)_socket;
#endif
}
- (void)releaseSocketFromCurrentThread
{
#ifdef OF_AMIGAOS
if (_socket == OFInvalidSocketHandle)
@throw [OFNotOpenException exceptionWithObject: self];
if ((_socketID = ReleaseSocket(_socket, UNIQUE_ID)) == -1) {
switch (Errno()) {
case ENOMEM:
@throw [OFOutOfMemoryException
exceptionWithRequestedSize: 0];
case EBADF:
@throw [OFNotOpenException exceptionWithObject: self];
default:
OFEnsure(0);
}
}
_socket = OFInvalidSocketHandle;
#endif
}
- (void)obtainSocketForCurrentThread
{
#ifdef OF_AMIGAOS
if (_socket != OFInvalidSocketHandle)
@throw [OFAlreadyOpenException exceptionWithObject: self];
if (_socketID == -1)
@throw [OFNotOpenException exceptionWithObject: self];
/*
* FIXME: We should store these, but that requires changing all
* subclasses. This only becomes a problem if IPv6 support ever
* gets added.
*/
_socket = ObtainSocket(_socketID, AF_INET, SOCK_DGRAM, 0);
if (_socket == OFInvalidSocketHandle)
@throw [OFInitializationFailedException
exceptionWithClass: self.class];
_socketID = -1;
#endif
}
- (void)close
{
if (_socket == OFInvalidSocketHandle)
@throw [OFNotOpenException exceptionWithObject: self];
closesocket(_socket);
_socket = OFInvalidSocketHandle;
}
@end