intel-linux-sgx/SampleCode/RemoteAttestation/service_provider/network_ra.cpp

/*
 * Copyright (C) 2011-2021 Intel Corporation. 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.
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 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 */



#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include "network_ra.h"
#include "service_provider.h"


// Used to send requests to the service provider sample.  It
// simulates network communication between the ISV app and the
// ISV service provider.  This would be modified in a real
// product to use the proper IP communication.
//
// @param server_url String name of the server URL
// @param p_req Pointer to the message to be sent.
// @param p_resp Pointer to a pointer of the response message.

// @return int

int ra_network_send_receive(const char *server_url,
    const ra_samp_request_header_t *p_req,
    ra_samp_response_header_t **p_resp)
{
    int ret = 0;
    ra_samp_response_header_t* p_resp_msg;

    if((NULL == server_url) ||
        (NULL == p_req) ||
        (NULL == p_resp))
    {
        return -1;
    }

    switch(p_req->type)
    {

    case TYPE_RA_MSG0:
        ret = sp_ra_proc_msg0_req((const sample_ra_msg0_t*)((size_t)p_req
            + sizeof(ra_samp_request_header_t)),
            p_req->size,
            &p_resp_msg);
        if (0 != ret)
        {
            fprintf(stderr, "\nError, call sp_ra_proc_msg1_req fail [%s].",
                __FUNCTION__);
        }
        else
        {
            *p_resp = p_resp_msg;
        }
        break;

    case TYPE_RA_MSG1:
        ret = sp_ra_proc_msg1_req((const sample_ra_msg1_t*)((size_t)p_req
            + sizeof(ra_samp_request_header_t)),
            p_req->size,
            &p_resp_msg);
        if(0 != ret)
        {
            fprintf(stderr, "\nError, call sp_ra_proc_msg1_req fail [%s].",
                __FUNCTION__);
        }
        else
        {
            *p_resp = p_resp_msg;
        }
        break;

    case TYPE_RA_MSG3:
        ret =sp_ra_proc_msg3_req((const sample_ra_msg3_t*)((size_t)p_req +
            sizeof(ra_samp_request_header_t)),
            p_req->size,
            &p_resp_msg);
        if(0 != ret)
        {
            fprintf(stderr, "\nError, call sp_ra_proc_msg3_req fail [%s].",
                __FUNCTION__);
        }
        else
        {
            *p_resp = p_resp_msg;
        }
        break;

    default:
        ret = -1;
        fprintf(stderr, "\nError, unknown ra message type. Type = %d [%s].",
            p_req->type, __FUNCTION__);
        break;
    }

    return ret;
}

// Used to free the response messages.  In the sample code, the
// response messages are allocated by the SP code.
//
//
// @param resp Pointer to the response buffer to be freed.

void ra_free_network_response_buffer(ra_samp_response_header_t *resp)
{
    if(resp!=NULL)
    {
        free(resp);
    }
}