string MessageHandler::generateMSG1()

in samplecode/remoteattestation/MessageHandler/MessageHandler.cpp [85:133]

39 lines of code
9 McCabe index (conditional complexity)


string MessageHandler::generateMSG1() {
    int retGIDStatus = 0;
    int count = 0;
    sgx_ra_msg1_t sgxMsg1Obj;

    while (1) {
        retGIDStatus = sgx_ra_get_msg1(this->enclave->getContext(),
                                       this->enclave->getID(),
                                       sgx_ra_get_ga,
                                       &sgxMsg1Obj);

        if (retGIDStatus == SGX_SUCCESS) {
            break;
        } else if (retGIDStatus == SGX_ERROR_BUSY) {
            if (count == 5) { //retried 5 times, so fail out
                Log("Error, sgx_ra_get_msg1 is busy - 5 retries failed", log::error);
                break;;
            } else {
                sleep(3);
                count++;
            }
        } else {    //error other than busy
            Log("Error, failed to generate MSG1", log::error);
            break;
        }
    }


    if (SGX_SUCCESS == retGIDStatus) {
        Log("MSG1 generated Successfully");

        Messages::MessageMSG1 msg;
        msg.set_type(RA_MSG1);

        for (auto x : sgxMsg1Obj.g_a.gx)
            msg.add_gax(x);

        for (auto x : sgxMsg1Obj.g_a.gy)
            msg.add_gay(x);

        for (auto x : sgxMsg1Obj.gid) {
            msg.add_gid(x);
        }

        return nm->serialize(msg);
    }

    return "";
}