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3666 mejdrech 1 
/*
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 * Copyright (c) 2009 Lukas Mejdrech
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup net
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 *  @{
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 */
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/** @file
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 *  Generic module skeleton implementation.
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 */
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#include <async.h>
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#include <stdio.h>
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#include <task.h>
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#include <ipc/ipc.h>
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#include "err.h"
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/** External message processing function.
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 *  Should process the messages.
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 *  The function has to be defined in each module.
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 *  @param callid The message identifier. Input parameter.
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 *  @param call The message parameters. Input parameter.
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 *  @param answer The message answer parameters. Output parameter.
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 *  @param answer_count The last parameter for the actual answer in the answer parameter. Output parameter.
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 *  @returns EOK on success.
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 *  @returns ENOTSUP if the message is not known.
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 *  @returns Other error codes as defined for each specific module message function.
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 */
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extern int	module_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count );
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/** External function to print the module name.
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 *  Should print the module name.
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 *  The function has to be defined in each module.
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 */
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extern void	module_print_name( void );
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/** External module startup function.
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 *  Should start and initialize the module and register the given client connection function.
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 *  The function has to be defined in each module.
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 *  @param client_connection The client connection functio to be registered. Input parameter.
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 */
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extern int	module_start( async_client_conn_t client_connection );
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/** Default thread for new connections.
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 *  @param iid The initial message identifier. Input parameter.
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 *  @param icall The initial message call structure. Input parameter.
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 */
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void	client_connection( ipc_callid_t iid, ipc_call_t * icall );
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/**	Starts the module.
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 *  @param argc The count of the command line arguments. Ignored parameter.
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 *  @param argv The command line parameters. Ignored parameter.
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 *  @returns EOK on success.
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 *  @returns Other error codes as defined for each specific module start function.
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 */
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int	main( int argc, char * argv[] );
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void client_connection( ipc_callid_t iid, ipc_call_t * icall ){
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	ipc_callid_t	callid;
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	ipc_call_t	call;
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	ipc_call_t	answer;
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	int		count;
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	int		res;
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	/*
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	 * Accept the connection
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	 *  - Answer the first IPC_M_CONNECT_ME_TO call.
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	 */
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	ipc_answer_0( iid, EOK );
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	while( true ){
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		// refresh data
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		count = 0;
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		IPC_SET_RETVAL( answer, 0 );
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		// just to be precize
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		IPC_SET_METHOD( answer, 0 );
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		IPC_SET_ARG1( answer, 0 );
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		IPC_SET_ARG2( answer, 0 );
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		IPC_SET_ARG3( answer, 0 );
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		IPC_SET_ARG4( answer, 0 );
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		IPC_SET_ARG5( answer, 0 );
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		callid = async_get_call( & call );
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		res = module_message( callid, & call, & answer, & count );
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		switch( count ){
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			case 0:		ipc_answer_0( callid, res );
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					continue;
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			case 1:		ipc_answer_1( callid, res, IPC_GET_ARG1( answer ));
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					continue;
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			case 2:		ipc_answer_2( callid, res, IPC_GET_ARG1( answer ), IPC_GET_ARG2( answer ));
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					continue;
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			case 3:		ipc_answer_3( callid, res, IPC_GET_ARG1( answer ), IPC_GET_ARG2( answer ), IPC_GET_ARG3( answer ));
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					continue;
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			case 4:		ipc_answer_4( callid, res, IPC_GET_ARG1( answer ), IPC_GET_ARG2( answer ), IPC_GET_ARG3( answer ), IPC_GET_ARG4( answer ));
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					continue;
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			default:	ipc_answer_5( callid, res, IPC_GET_ARG1( answer ), IPC_GET_ARG2( answer ), IPC_GET_ARG3( answer ), IPC_GET_ARG4( answer ), IPC_GET_ARG5( answer ));
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					continue;
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		}
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	}
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}
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int main( int argc, char * argv[] ){
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	ERROR_DECLARE;
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	printf("Task %d - ", task_get_id());
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	module_print_name();
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	printf( "\n" );
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	if( ERROR_OCCURRED( module_start( client_connection ))){
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		printf( " - ERROR %i\n", ERROR_CODE );
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		return ERROR_CODE;
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	}
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	return EOK;
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}
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/** @}
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 */