ObjFW  Check-in [4ca583737c]

/**
 * \brief A class which provides functions to create and use sockets.
 */
@interface OFSocket: OFStream
{
@public
#ifndef _WIN32
	int    sock;
#else
	SOCKET sock;
#endif
	BOOL   listening;
@protected
	BOOL   eos;
}

/**
 * \return A new autoreleased OFTCPSocket
 */
+ socket;

/**
 * Enables/disables non-blocking I/O.
 */
- (void)setBlocking: (BOOL)enable;
@end

 * Q Public License 1.0, which can be found in the file LICENSE included in
 * the packaging of this file.
 */

#import "OFObject.h"

@class OFSocket;
@class OFTCPSocket;
@class OFDataArray;
@class OFMutableDictionary;

/**
 * \brief A protocol that needs to be implemented by delegates for
 *	  OFSocketObserver.
 */
@protocol OFSocketObserverDelegate
/*
 * This callback is called when a listening socket got a new incoming
 * connection.
 *
 * \param sock The socket which did receive an incoming connection
 */
- (void)socketDidReceiveIncomingConnection: (OFTCPSocket*)sock;

/**
 * This callback is called when a socket did get ready for reading.
 *



 * \param sock The socket which did become ready for reading
 */
- (void)socketDidBecomeReadyForReading: (OFSocket*)sock;

/**
 * This callback is called when a socket did get ready for writing.
 *
 * \param sock The socket which did become ready for writing
 */
- (void)socketDidBecomeReadyForWriting: (OFSocket*)sock;
@end

/**
 * \brief A class that can observe multiple sockets at once.
 */
@interface OFSocketObserver: OFObject
{

/**
 * Sets the delegate for the OFSocketObserver.
 *
 * \param delegate The delegate for the OFSocketObserver
 */
- (void)setDelegate: (OFObject <OFSocketObserverDelegate>*)delegate;

/**
 * Adds a socket to observe for incoming connections.
 *
 * \param sock The socket to observe for incoming connections
 */
- (void)addSocketToObserveForIncomingConnections: (OFTCPSocket*)sock;

/**
 * Adds a socket to observe for reading.
 *
 * \param sock The socket to observe for reading
 */
- (void)addSocketToObserveForReading: (OFSocket*)sock;

/**
 * Adds a socket to observe for writing.
 *
 * \param sock The socket to observe for writing
 */
- (void)addSocketToObserveForWriting: (OFSocket*)sock;

/**
 * Removes a socket to observe for incoming connections.
 *
 * \param sock The socket to remove from observing for incoming connections
 */
- (void)removeSocketToObserveForIncomingConnections: (OFTCPSocket*)sock;

/**
 * Removes a socket to observe for reading.
 *
 * \param sock The socket to remove from observing for reading
 */
- (void)removeSocketToObserveForReading: (OFSocket*)sock;

#include <poll.h>

#import "OFSocketObserver.h"
#import "OFDataArray.h"
#import "OFDictionary.h"
#import "OFSocket.h"
#import "OFTCPSocket.h"
#import "OFNumber.h"
#import "OFAutoreleasePool.h"

@implementation OFSocketObserver
+ socketObserver
{
	return [[[self alloc] init] autorelease];

- (void)setDelegate: (OFObject <OFSocketObserverDelegate>*)delegate_
{
	[delegate_ retain];
	[delegate release];
	delegate = delegate_;
}

- (void)_addSocket: (OFSocket*)sock
	withEvents: (short)events
{
	struct pollfd *fds_c = [fds cArray];
	size_t i, count = [fds count];
	BOOL found = NO;

	for (i = 0; i < count; i++) {
		if (fds_c[i].fd == sock->sock) {
			fds_c[i].events |= events;
			found = YES;
		}
	}

	if (!found) {
		OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
		struct pollfd p = { sock->sock, events, 0 };
		[fds addItem: &p];
		[fdToSocket setObject: sock
			       forKey: [OFNumber numberWithInt: sock->sock]];
		[pool release];
	}
}

- (void)_removeSocket: (OFSocket*)sock




	   withEvents: (short)events


















{
	struct pollfd *fds_c = [fds cArray];
	size_t i, nfds = [fds count];

	for (i = 0; i < nfds; i++) {
		if (fds_c[i].fd == sock->sock) {
			OFAutoreleasePool *pool;

			fds_c[i].events &= ~events;

			if (fds_c[i].events != 0)
				return;

			pool = [[OFAutoreleasePool alloc] init];

			[fds removeItemAtIndex: i];
			[fdToSocket removeObjectForKey:
			    [OFNumber numberWithInt: sock->sock]];

			[pool release];
		}
	}
}

- (void)addSocketToObserveForIncomingConnections: (OFTCPSocket*)sock
{
	[self _addSocket: sock
	      withEvents: POLLIN];
}

- (void)addSocketToObserveForReading: (OFSocket*)sock

{
	[self _addSocket: sock
	      withEvents: POLLIN];
}

- (void)addSocketToObserveForWriting: (OFSocket*)sock
{
	[self _addSocket: sock
	      withEvents: POLLOUT];
}

- (void)removeSocketToObserveForIncomingConnections: (OFTCPSocket*)sock
{
	[self _removeSocket: sock
		 withEvents: POLLIN];
}

- (void)removeSocketToObserveForReading: (OFSocket*)sock
{
	[self _removeSocket: sock
		 withEvents: POLLIN];
}

- (void)removeSocketToObserveForWriting: (OFSocket*)sock
{
	[self _removeSocket: sock
		 withEvents: POLLOUT];
}

- (int)observe
{
	return [self observeWithTimeout: -1];
}

	for (i = 0; i < nfds; i++) {
		OFNumber *num;
		OFSocket *sock;

		if (fds_c[i].revents & POLLIN) {
			num = [OFNumber numberWithInt: fds_c[i].fd];
			sock = [fdToSocket objectForKey: num];

			if (sock->listening)
				[delegate socketDidReceiveIncomingConnection:
				    (OFTCPSocket*)sock];
			else
				[delegate socketDidBecomeReadyForReading: sock];
		}

		if (fds_c[i].revents & POLLOUT) {
			num = [OFNumber numberWithInt: fds_c[i].fd];
			sock = [fdToSocket objectForKey: num];
			[delegate socketDidBecomeReadyForReading: sock];
		}

		fds_c[i].revents = 0;
	}

	[pool release];

	return ret;
}
@end

@implementation OFObject (OFSocketObserverDelegate)
- (void)socketDidReceiveIncomingConnection: (OFTCPSocket*)sock
{
}

- (void)socketDidBecomeReadyForReading: (OFSocket*)sock
{
}

- (void)socketDidBecomeReadyForWriting: (OFSocket*)sock
{
}
@end

{
	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithClass: isa];

	if (listen(sock, backlog) == -1)
		@throw [OFListenFailedException newWithClass: isa
						     backLog: backlog];

	listening = YES;
}

- (void)listen
{
	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithClass: isa];

	if (listen(sock, 5) == -1)
		@throw [OFListenFailedException newWithClass: isa
						     backLog: 5];

	listening = YES;
}

- (OFTCPSocket*)accept
{
	OFTCPSocket *newsock;
	struct sockaddr *addr;
	socklen_t addrlen;

- (void)close
{
	if (sock == INVALID_SOCKET)
		@throw [OFNotConnectedException newWithClass: isa];

	close(sock);
	sock = INVALID_SOCKET;
	listening = NO;
	eos = NO;

	[self freeMemory: sockAddr];
	sockAddr = NULL;
	sockAddrLen = 0;
}

- (void)dealloc