static int power_on_simulator()

in src/tpm_comm_emulator.c [96:164]

• 67 lines of code
• 8 McCabe index (conditional complexity)

static int power_on_simulator(TPM_COMM_INFO* tpm_comm_info)
{
    int result;
    TPM_SOCKET_HANDLE platform_conn;

    if ((platform_conn = tpm_socket_create(tpm_comm_info->socket_ip, TPM_SIMULATOR_PLATFORM_PORT) ) == NULL)
    {
        LogError("Failure: connecting to tpm simulator platform interface.");
        result = MU_FAILURE;
    }
    else
    {
        uint32_t power_on_cmd = htonl(REMOTE_SIGNAL_POWER_ON_CMD);
        uint32_t signal_nv_cmd = htonl(REMOTE_SIGNAL_NV_ON_CMD);

        if (tpm_socket_send(platform_conn, (const unsigned char*)&power_on_cmd, sizeof(power_on_cmd) ) != 0)
        {
            LogError("Failure sending remote handshake.");
            result = MU_FAILURE;
        }
        else
        {
            uint32_t ack_value;
            if (tpm_socket_read(platform_conn, (unsigned char*)&ack_value, sizeof(uint32_t)) != 0)
            {
                LogError("Failure sending remote handshake.");
                result = MU_FAILURE;
            }
            else
            {
                if (htonl(ack_value) != 0)
                {
                    LogError("Failure reading cmd sync.");
                    result = MU_FAILURE;
                }
                else
                {
                    if (tpm_socket_send(platform_conn, (const unsigned char*)&signal_nv_cmd, sizeof(signal_nv_cmd) ) != 0)
                    {
                        LogError("Failure sending remote handshake.");
                        result = MU_FAILURE;
                    }
                    else
                    {
                        if (tpm_socket_read(platform_conn, (unsigned char*)&ack_value, sizeof(uint32_t)) != 0)
                        {
                            LogError("Failure sending remote handshake.");
                            result = MU_FAILURE;
                        }
                        else
                        {
                            if (htonl(ack_value) != 0)
                            {
                                LogError("Failure reading cmd sync.");
                                result = MU_FAILURE;
                            }
                            else
                            {
                                result = 0;
                            }
                        }
                    }
                }
            }
        }
        tpm_socket_destroy(platform_conn);
    }
    return result;
}