static CK_RV prvReadData()

in source/portable/os/posix/core_pkcs11_pal.c [82:141]
52 lines of code
7 McCabe index (conditional complexity)

static CK_RV prvReadData( const char * pcFileName,
                          CK_BYTE_PTR * ppucData,
                          CK_ULONG_PTR pulDataSize )
{
    CK_RV xReturn = CKR_OK;
    FILE * pxFile = NULL;
    size_t lSize = 0;

    pxFile = fopen( pcFileName, "r" );

    if( NULL == pxFile )
    {
        LogError( ( "PKCS #11 PAL failed to get object value. "
                    "Could not open file named %s for reading.", pcFileName ) );
        xReturn = CKR_FUNCTION_FAILED;
    }
    else
    {
        ( void ) fseek( pxFile, 0, SEEK_END );
        lSize = ftell( pxFile );
        ( void ) fseek( pxFile, 0, SEEK_SET );

        if( lSize > 0UL )
        {
            *pulDataSize = lSize;
            *ppucData = malloc( *pulDataSize );

            if( NULL == *ppucData )
            {
                LogError( ( "Could not get object value. Malloc failed to allocate memory." ) );
                xReturn = CKR_HOST_MEMORY;
            }
        }
        else
        {
            LogError( ( "Could not get object value. Failed to determine object size." ) );
            xReturn = CKR_FUNCTION_FAILED;
        }
    }

    if( CKR_OK == xReturn )
    {
        lSize = 0;
        lSize = fread( *ppucData, sizeof( uint8_t ), *pulDataSize, pxFile );

        if( lSize != *pulDataSize )
        {
            LogError( ( "PKCS #11 PAL Failed to get object value. Expected to read %ld "
                        "from %s but received %ld", *pulDataSize, pcFileName, lSize ) );
            xReturn = CKR_FUNCTION_FAILED;
        }
    }

    if( NULL != pxFile )
    {
        ( void ) fclose( pxFile );
    }

    return xReturn;
}