static uint32_t fTPMResponseCode()

in TAs/optee_ta/fTPM/fTPM.c [86:107]

• 18 lines of code
• 2 McCabe index (conditional complexity)

static uint32_t fTPMResponseCode(uint32_t ResponseSize, 
                                 uint8_t *ResponseBuffer)
{
    uint32_t ResponseCode;
    union {
        uint32_t Data;
        uint8_t Index[4];
    } Value;

    // In case of too-small response size, assume failure.
    if (ResponseSize < 0xA) {
        return TPM_RC_FAILURE;
    }

    Value.Index[0] = ResponseBuffer[6];
    Value.Index[1] = ResponseBuffer[7];
    Value.Index[2] = ResponseBuffer[8];
    Value.Index[3] = ResponseBuffer[9];
    ResponseCode = SwapBytes32(Value.Data);

    return ResponseCode;
}