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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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/** @name External module functions.
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 *  This functions have to be implemented in every module.
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 */
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/*@{*/
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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 function 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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/*@}*/
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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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 */