static AzureIoTResult_t prvFindKeyParts()

in ports/mbedTLS/azure_iot_jws_mbedtls.c [368:425]
49 lines of code
14 McCabe index (conditional complexity)

static AzureIoTResult_t prvFindKeyParts( AzureIoTJSONReader_t * pxPayload,
                                         az_span * pxBase64EncodedNSpan,
                                         az_span * pxBase64EncodedESpan,
                                         az_span * pxAlgSpan )
{
    AzureIoTResult_t xResult = eAzureIoTSuccess;

    /*Begin object */
    azureiotresultRETURN_IF_FAILED( AzureIoTJSONReader_NextToken( pxPayload ) );
    /*Property Name */
    azureiotresultRETURN_IF_FAILED( AzureIoTJSONReader_NextToken( pxPayload ) );

    while( xResult == eAzureIoTSuccess &&
           ( az_span_size( *pxBase64EncodedNSpan ) == 0 ||
             az_span_size( *pxBase64EncodedESpan ) == 0 ||
             az_span_size( *pxAlgSpan ) == 0 ) )
    {
        if( AzureIoTJSONReader_TokenIsTextEqual( pxPayload, jws_n_json_value, sizeof( jws_n_json_value ) - 1 ) )
        {
            azureiotresultRETURN_IF_FAILED( AzureIoTJSONReader_NextToken( pxPayload ) );
            *pxBase64EncodedNSpan = pxPayload->_internal.xCoreReader.token.slice;

            xResult = AzureIoTJSONReader_NextToken( pxPayload );
        }
        else if( AzureIoTJSONReader_TokenIsTextEqual( pxPayload, jws_e_json_value, sizeof( jws_e_json_value ) - 1 ) )
        {
            azureiotresultRETURN_IF_FAILED( AzureIoTJSONReader_NextToken( pxPayload ) );
            *pxBase64EncodedESpan = pxPayload->_internal.xCoreReader.token.slice;

            xResult = AzureIoTJSONReader_NextToken( pxPayload );
        }
        else if( AzureIoTJSONReader_TokenIsTextEqual( pxPayload, jws_alg_json_value, sizeof( jws_alg_json_value ) - 1 ) )
        {
            azureiotresultRETURN_IF_FAILED( AzureIoTJSONReader_NextToken( pxPayload ) );
            *pxAlgSpan = pxPayload->_internal.xCoreReader.token.slice;

            xResult = AzureIoTJSONReader_NextToken( pxPayload );
        }
        else
        {
            azureiotresultRETURN_IF_FAILED( AzureIoTJSONReader_NextToken( pxPayload ) );
            azureiotresultRETURN_IF_FAILED( AzureIoTJSONReader_SkipChildren( pxPayload ) );
            xResult = AzureIoTJSONReader_NextToken( pxPayload );
        }
    }

    if( ( xResult != eAzureIoTSuccess ) ||
        ( az_span_size( *pxBase64EncodedNSpan ) == 0 ) ||
        ( az_span_size( *pxBase64EncodedESpan ) == 0 ) ||
        ( az_span_size( *pxAlgSpan ) == 0 ) )
    {
        AZLogError( ( "[JWS] Parse Signing Key Payload Error: %i",
                      xResult != eAzureIoTSuccess ? xResult : eAzureIoTErrorFailed ) );
        return xResult != eAzureIoTSuccess ? xResult : eAzureIoTErrorFailed;
    }

    return eAzureIoTSuccess;
}