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3466 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 functions implementation.
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 */
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#include <async.h>
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#include <malloc.h>
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#include <ipc/ipc.h>
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#include <ipc/services.h>
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#include "err.h"
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#include "modules.h"
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/** The time between connect requests.
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 */
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#define MODULE_WAIT_TIME    10000
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int connect_to_service( services_t need ){
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    int phone;
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    int res;
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    //TODO timeout version?
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    res = async_req_3_5( PHONE_NS, IPC_M_CONNECT_ME_TO, need, 0, 0, NULL, NULL, NULL, NULL, ( ipcarg_t * ) & phone );
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    while(( res < 0 ) || ( phone < 0 )){
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        usleep( MODULE_WAIT_TIME );
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        res = async_req_3_5( PHONE_NS, IPC_M_CONNECT_ME_TO, need, 0, 0, NULL, NULL, NULL, NULL, ( ipcarg_t * ) & phone );
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    }
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    return phone;
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}
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int bind_service( services_t need, ipcarg_t arg1, ipcarg_t arg2, ipcarg_t arg3, async_client_conn_t client_receiver ){
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    ERROR_DECLARE;
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    int         phone;
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    ipcarg_t    phonehash;
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    phone = connect_to_service( need );
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    if( phone >= 0 ){
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        if( ERROR_OCCURRED( ipc_connect_to_me( phone, arg1, arg2, arg3, & phonehash ))){
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            async_msg_0( phone, IPC_M_PHONE_HUNGUP );
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            return ERROR_CODE;
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        }
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        async_new_connection( phonehash, 0, NULL, client_receiver );
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    }
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    return phone;
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}
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void answer_call( ipc_callid_t callid, int result, ipc_call_t * answer, int answer_count ){
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    if( answer || ( ! answer_count )){
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        switch( answer_count ){
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            case 0:
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                ipc_answer_0( callid, ( ipcarg_t ) result );
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                break;
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            case 1:
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                ipc_answer_1( callid, ( ipcarg_t ) result, IPC_GET_ARG1( * answer ));
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                break;
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            case 2:
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                ipc_answer_2( callid, ( ipcarg_t ) result, IPC_GET_ARG1( * answer ), IPC_GET_ARG2( * answer ));
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                break;
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            case 3:
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                ipc_answer_3( callid, ( ipcarg_t ) result, IPC_GET_ARG1( * answer ), IPC_GET_ARG2( * answer ), IPC_GET_ARG3( * answer ));
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                break;
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            case 4:
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                ipc_answer_4( callid, ( ipcarg_t ) result, IPC_GET_ARG1( * answer ), IPC_GET_ARG2( * answer ), IPC_GET_ARG3( * answer ), IPC_GET_ARG4( * answer ));
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                break;
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            case 5:
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            default:
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                ipc_answer_5( callid, ( ipcarg_t ) result, IPC_GET_ARG1( * answer ), IPC_GET_ARG2( * answer ), IPC_GET_ARG3( * answer ), IPC_GET_ARG4( * answer ), IPC_GET_ARG5( * answer ));
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                break;
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        }
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    }
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}
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void refresh_answer( ipc_call_t * answer, int * answer_count ){
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    if( answer_count ){
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        * answer_count = 0;
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    }
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    if( answer ){
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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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    }
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}
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int data_receive( void ** data, size_t * length ){
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    ERROR_DECLARE;
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    ipc_callid_t    callid;
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    if( !( data && length )) return EBADMEM;
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    if( ! ipc_data_write_receive( & callid, length )) return EINVAL;
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    * data = malloc( * length );
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    if( !( * data )) return ENOMEM;
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    if( ERROR_OCCURRED( ipc_data_write_finalize( callid, * data, * length ))){
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        free( data );
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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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int data_reply( void * data, size_t data_length ){
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    size_t          length;
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    ipc_callid_t    callid;
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    if(( ! ipc_data_read_receive( & callid, & length ))
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    || ( length < data_length )){
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        return EINVAL;
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    }
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    return ipc_data_read_finalize( callid, data, data_length );
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}
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/** @}
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 */