static AzureIoTResult_t prvBase64DecodeJWK()

in ports/mbedTLS/azure_iot_jws_mbedtls.c [472:525]
41 lines of code
7 McCabe index (conditional complexity)

static AzureIoTResult_t prvBase64DecodeJWK( prvJWSValidationContext_t * pxManifestContext )
{
    az_result xCoreResult;

    xCoreResult = az_base64_url_decode( az_span_create( pxManifestContext->ucJWKHeader, azureiotjwsJWK_HEADER_SIZE ),
                                        az_span_create( pxManifestContext->pucJWKBase64EncodedHeader, pxManifestContext->ulJWKBase64EncodedHeaderLength ),
                                        &pxManifestContext->outJWKHeaderLength );

    if( az_result_failed( xCoreResult ) )
    {
        AZLogError( ( "[JWS] az_base64_url_decode failed: result 0x%08x", ( uint16_t ) xCoreResult ) );

        if( xCoreResult == AZ_ERROR_NOT_ENOUGH_SPACE )
        {
            AZLogError( ( "[JWS] Decode buffer was too small: %i bytes", azureiotjwsJWK_HEADER_SIZE ) );
        }

        return eAzureIoTErrorFailed;
    }

    xCoreResult = az_base64_url_decode( az_span_create( pxManifestContext->ucJWKPayload, azureiotjwsJWK_PAYLOAD_SIZE ),
                                        az_span_create( pxManifestContext->pucJWKBase64EncodedPayload, pxManifestContext->ulJWKBase64EncodedPayloadLength ),
                                        &pxManifestContext->outJWKPayloadLength );

    if( az_result_failed( xCoreResult ) )
    {
        AZLogError( ( "[JWS] az_base64_url_decode failed: result 0x%08x", ( uint16_t ) xCoreResult ) );

        if( xCoreResult == AZ_ERROR_NOT_ENOUGH_SPACE )
        {
            AZLogError( ( "[JWS] Decode buffer was too small: %i bytes", azureiotjwsJWK_PAYLOAD_SIZE ) );
        }

        return eAzureIoTErrorFailed;
    }

    xCoreResult = az_base64_url_decode( az_span_create( pxManifestContext->ucJWKSignature, azureiotjwsSIGNATURE_SIZE ),
                                        az_span_create( pxManifestContext->pucJWKBase64EncodedSignature, pxManifestContext->ulJWKBase64EncodedSignatureLength ),
                                        &pxManifestContext->outJWKSignatureLength );

    if( az_result_failed( xCoreResult ) )
    {
        AZLogError( ( "[JWS] az_base64_url_decode failed: result 0x%08x", ( uint16_t ) xCoreResult ) );

        if( xCoreResult == AZ_ERROR_NOT_ENOUGH_SPACE )
        {
            AZLogError( ( "[JWS] Decode buffer was too small: %i bytes", azureiotjwsSIGNATURE_SIZE ) );
        }

        return eAzureIoTErrorFailed;
    }

    return eAzureIoTSuccess;
}