/**

 * $Id: net_osx.m 1018 2009-03-19 12:29:06Z nkeynes $

 *

 * OS X networking support functions. Currently this is just for activity callbacks.

 *

 * Copyright (c) 2009 Nathan Keynes.

 *

 * 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.

 */

#include <CoreFoundation/CoreFoundation.h>

#include "netutil.h"

struct net_osx_cbinfo {

    net_callback_t callback;

    void * cbdata;

    void (*cbdealloc)(void *);

    CFSocketRef sockRef;

    CFRunLoopSourceRef sourceRef;

};

static void net_osx_callback( CFSocketRef s, CFSocketCallBackType type, CFDataRef address, const void *unused, void *data )

{

    struct net_osx_cbinfo *cbinfo = (struct net_osx_cbinfo *)data;

    if(!cbinfo->callback( CFSocketGetNative(s), cbinfo->cbdata) ) {

        CFRunLoopRemoveSource( CFRunLoopGetCurrent(), cbinfo->sourceRef, kCFRunLoopCommonModes );

        CFRelease(cbinfo->sourceRef);

        cbinfo->sourceRef = NULL;

        CFRelease(cbinfo->sockRef);

    }

}

static void net_osx_release( const void *data )

{

    struct net_osx_cbinfo *cbinfo = (struct net_osx_cbinfo *)data;

    if( cbinfo->cbdealloc != NULL ) {

        cbinfo->cbdealloc(cbinfo->cbdata);

    }

    free( cbinfo );

}

/**

 * Register a TCP server socket listener on an already open (and listening) 

 * socket. The socket must not have been previously registered.

 * @return TRUE on success, FALSE on failure.

 * 

 * Defined in netutil.h

 */ 

gboolean net_register_tcp_listener( int fd, net_callback_t callback, void *data, void (*dealloc)(void*) )

{

    CFSocketContext socketContext;

    struct net_osx_cbinfo *cbinfo = malloc( sizeof(struct net_osx_cbinfo) );

    assert(cbinfo != NULL);

    cbinfo->callback = callback;

    cbinfo->cbdata = data;

    cbinfo->cbdealloc = dealloc;

    socketContext.version = 0;

    socketContext.info = cbinfo;

    socketContext.retain = NULL;

    socketContext.release = net_osx_release;

    socketContext.copyDescription = NULL;

    cbinfo->sockRef = CFSocketCreateWithNative( kCFAllocatorDefault, fd, kCFSocketReadCallBack, 

            net_osx_callback, &socketContext );

    cbinfo->sourceRef = CFSocketCreateRunLoopSource( kCFAllocatorDefault, cbinfo->sockRef, 0 );

    CFRunLoopAddSource( CFRunLoopGetCurrent(), cbinfo->sourceRef, kCFRunLoopCommonModes );

}