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/*

 * Copyright (c) 2008 Lukas Mejdrech

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/** @addtogroup net

 * @{

 */

/** @file

 */

#include <async.h>

#include <errno.h>

#include <stdio.h>

#include <ipc/ipc.h>

#include <ipc/services.h>

//#include <sys/mman.h>

#include "../err.h"

#include "../measured_strings.h"

#include "../messages.h"

#include "../modules.h"

#include "../netif/netif_device_id_type.h"

#include "ip.h"

#define DEFAULT_IPV	4

ip_globals_t	ip_globals;

DEVICE_MAP_IMPLEMENT( ip_netifs, ip_netif_t )

int parse_address( char * value, address_ref address );

/**	Initializes the module.

 */

int ip_initialize( void ){

	ip_netifs_initialize( & ip_globals.netifs );

	return EOK;

}

int ip_call( ipc_callid_t callid ){

	return EOK;

}

int parse_address( char * value, address_ref address ){

	char *	next;

	int	index;

	if( ! value ){

		( * address )[ 0 ] = ( * address )[ 1 ] = ( * address )[ 2 ] = ( * address )[ 3 ] = 0;

		return ENOENT;

	}

	next = value;

	for( index = 0; index < 4; ++ index ){

		if(( ! next ) || ( ! * next )) return EINVAL;

		if( index ) ++ next;

		( * address )[ index ] = strtoul( next, & next, 0 );

	}

	return EOK;

}

int ip_message( ipc_callid_t callid, ipcarg_t method, ipcarg_t arg1, ipcarg_t arg2, ipcarg_t arg3, ipcarg_t * result1, ipcarg_t * result2, ipcarg_t * result3 ){

	ERROR_DECLARE;

	ip_netif_ref		ip_netif;

	aid_t			message;

	ipc_call_t		answer;

	measured_string_t	configuration[ 9 ] = {{ "IPV", 3 }, { "IP_CONFIG", 9 }, { "IP_ADDR", 7 }, { "NETMASK", 7 }, { "GATEWAY", 7 }, { "BROADCAST", 9 }, { "DNS1", 4 }, { "DNS2", 4 }, { "ARP", 3 }};

	int			count = 9;

	measured_string_ref	settings;

	char *			data;

	switch( method ){

		case IPC_M_PHONE_HUNGUP:

			return EOK;

		case NET_IP_ECHO:

			if( result1 ) * result1 = arg1;

			if( result2 ) * result2 = arg2;

			if( result3 ) * result3 = arg3;

			return EOK;

		case NET_IL_DEVICE:

			ip_netif = ( ip_netif_ref ) malloc( sizeof( ip_netif_t ));

			if( ! ip_netif ) return ENOMEM;

			ip_netif->device_id = arg1;

			// get configuration

			message = async_send_2( ip_globals.networking_phone, NET_NETWORKING_GET_DEVICE_CONFIGURATION, ip_netif->device_id, count, & answer );

			// send names and get settings

			if( ERROR_OCCURED( measured_strings_send( ip_globals.networking_phone, configuration, count ))

			|| ERROR_OCCURED( measured_strings_return( ip_globals.networking_phone, & settings, & data, count ))){

				async_wait_for( message, NULL );

				return ERROR_CODE;

			}

			if( settings ){

				if( settings[ 0 ].value ){

					ip_netif->ipv = strtol( settings[ 0 ].value, NULL, 0 );

				}else{

					ip_netif->ipv = DEFAULT_IPV;

				}

				ip_netif->dhcp = ! strcmp( settings[ 1 ].value, "DHCP" );

				if( ip_netif->dhcp ){

					// TODO dhcp

					free( ip_netif );

					return ENOTSUP;

				}else if( ip_netif->ipv == 4 ){

					if( ERROR_OCCURED( parse_address( settings[ 2 ].value, & ip_netif->address ))

					|| ERROR_OCCURED( parse_address( settings[ 3 ].value, & ip_netif->netmask ))

					|| ( parse_address( settings[ 4 ].value, & ip_netif->gateway ) == EINVAL )

					|| ( parse_address( settings[ 5 ].value, & ip_netif->broadcast ) == EINVAL )

					|| ( parse_address( settings[ 6 ].value, & ip_netif->dns1 ) == EINVAL )

					|| ( parse_address( settings[ 7 ].value, & ip_netif->dns2 ) == EINVAL )){

						free( ip_netif );

						return EINVAL;

					}

				}else{

					// TODO ipv6

					free( ip_netif );

					return ENOTSUP;

				}

				// TODO ARP module

			}

			// print the settings

			printf( "\n -IPV=%d", ip_netif->ipv );

			printf( "\n -configuration=%s", ip_netif->dhcp ? "dhcp" : "static" );

			// TODO ipv6

			printf( "\n -address=%d.%d.%d.%d", ip_netif->address[ 0 ], ip_netif->address[ 1 ], ip_netif->address[ 2 ], ip_netif->address[ 3 ] );

			printf( "\n -netmask=%d.%d.%d.%d", ip_netif->netmask[ 0 ], ip_netif->netmask[ 1 ], ip_netif->netmask[ 2 ], ip_netif->netmask[ 3 ] );

			printf( "\n -gateway=%d.%d.%d.%d", ip_netif->gateway[ 0 ], ip_netif->gateway[ 1 ], ip_netif->gateway[ 2 ], ip_netif->gateway[ 3 ] );

			printf( "\n -broadcast=%d.%d.%d.%d", ip_netif->broadcast[ 0 ], ip_netif->broadcast[ 1 ], ip_netif->broadcast[ 2 ], ip_netif->broadcast[ 3 ] );

			printf( "\n -dns1=%d.%d.%d.%d", ip_netif->dns1[ 0 ], ip_netif->dns1[ 1 ], ip_netif->dns1[ 2 ], ip_netif->dns1[ 3 ] );

			printf( "\n -dns2=%d.%d.%d.%d", ip_netif->dns2[ 0 ], ip_netif->dns2[ 1 ], ip_netif->dns2[ 2 ], ip_netif->dns2[ 3 ] );

			// TODO arp module

			free( settings );

			free( data );

			// end request

			async_wait_for( message, NULL );

			ip_netif->phone = connect_to_service( arg2 );

			if( ERROR_OCCURED( async_req_2_0( ip_netif->phone, NET_LL_REGISTER, arg1, SERVICE_IP ))

			|| ERROR_OCCURED( ip_netifs_add( & ip_globals.netifs, ip_netif->device_id, ip_netif ))){

				free( ip_netif );

				return ERROR_CODE;

			}

			return EOK;

		case NET_IL_DEVICE_STATE_CHANGED:

		case NET_LL_DEVICE_STATE_CHANGED:

			// arg1 device id

			// arg2 state

			// TODO state

			printf( "\nip - device %d changed state to %d\n", arg1, arg2 );

		case NET_IP_TCP_REGISTER:

			ip_globals.tcp_phone = connect_to_service( arg1 );

			return EOK;

	}

	return ENOTSUP;

}

/** @}

 */