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  /********************************************************************\
  * BitlBee -- An IRC to other IM-networks gateway                     *
  *                                                                    *
  * Copyright 2002-2006 Wilmer van der Gaast and others                *
  \********************************************************************/

/*
 * Event handling (using GLib)
 */

/*
  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 with
  the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL;
  if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  Suite 330, Boston, MA  02111-1307  USA
*/

#define BITLBEE_CORE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#ifndef _WIN32
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#else
#include "sock.h"
#define ETIMEDOUT WSAETIMEDOUT
#define EINPROGRESS WSAEINPROGRESS
#endif
#include <fcntl.h>
#include <errno.h>
#include "proxy.h"

typedef struct _GaimIOClosure {
	b_event_handler function;
	gpointer data;
	guint flags;
} GaimIOClosure;

static GMainLoop *loop = NULL;

void b_main_init()
{
	if( loop == NULL )
		loop = g_main_new( FALSE );
}

void b_main_run()
{
	g_main_run( loop );
}

void b_main_quit()
{
	g_main_quit( loop );
}

static gboolean gaim_io_invoke(GIOChannel *source, GIOCondition condition, gpointer data)
{
	GaimIOClosure *closure = data;
	b_input_condition gaim_cond = 0;
	gboolean st;

	if (condition & GAIM_READ_COND)
		gaim_cond |= B_EV_IO_READ;
	if (condition & GAIM_WRITE_COND)
		gaim_cond |= B_EV_IO_WRITE;
	
	event_debug( "gaim_io_invoke( %d, %d, 0x%x )\n", g_io_channel_unix_get_fd(source), condition, data );

	st = closure->function(closure->data, g_io_channel_unix_get_fd(source), gaim_cond);
	
	if( !st )
		event_debug( "Returned FALSE, cancelling.\n" );
	
	if (closure->flags & B_EV_FLAG_FORCE_ONCE)
		return FALSE;
	else if (closure->flags & B_EV_FLAG_FORCE_REPEAT)
		return TRUE;
	else
		return st;
}

static void gaim_io_destroy(gpointer data)
{
	event_debug( "gaim_io_destroy( 0x%x )\n", data );
	g_free(data);
}

gint b_input_add(gint source, b_input_condition condition, b_event_handler function, gpointer data)
{
	GaimIOClosure *closure = g_new0(GaimIOClosure, 1);
	GIOChannel *channel;
	GIOCondition cond = 0;
	int st;
	
	closure->function = function;
	closure->data = data;
	closure->flags = condition;
	
	if (condition & B_EV_IO_READ)
		cond |= GAIM_READ_COND;
	if (condition & B_EV_IO_WRITE)
		cond |= GAIM_WRITE_COND;
	
	channel = g_io_channel_unix_new(source);
	st = g_io_add_watch_full(channel, G_PRIORITY_DEFAULT, cond,
	                         gaim_io_invoke, closure, gaim_io_destroy);
	
	event_debug( "b_input_add( %d, %d, 0x%x, 0x%x ) = %d (%p)\n", source, condition, function, data, st, closure );
	
	g_io_channel_unref(channel);
	return st;
}

gint b_timeout_add(gint timeout, b_event_handler func, gpointer data)
{
	/* GSourceFunc and the BitlBee event handler function aren't
	   really the same, but they're "compatible". ;-) It will do
	   for now, BitlBee only looks at the "data" argument. */
	gint st = g_timeout_add(timeout, (GSourceFunc) func, data);
	
	event_debug( "b_timeout_add( %d, %d, %d ) = %d\n", timeout, func, data, st );
	
	return st;
}

void b_event_remove(gint tag)
{
	event_debug( "b_event_remove( %d )\n", tag );
	
	if (tag > 0)
		g_source_remove(tag);
}

void closesocket( int fd )
{
	close( fd );
}