CK_OBJECT_HANDLE PKCS11_PAL_SaveObject()

in source/portable/os/posix/core_pkcs11_pal.c [150:209]

• 52 lines of code
• 7 McCabe index (conditional complexity)

CK_OBJECT_HANDLE PKCS11_PAL_SaveObject( CK_ATTRIBUTE_PTR pxLabel,
                                        CK_BYTE_PTR pucData,
                                        CK_ULONG ulDataSize )
{
    FILE * pxFile = NULL;
    size_t ulBytesWritten;
    const char * pcFileName = NULL;
    CK_OBJECT_HANDLE xHandle = ( CK_OBJECT_HANDLE ) eInvalidHandle;

    if( ( pxLabel != NULL ) && ( pucData != NULL ) )
    {
        /* Converts a label to its respective filename and handle. */
        PAL_UTILS_LabelToFilenameHandle( pxLabel->pValue,
                                         &pcFileName,
                                         &xHandle );
    }
    else
    {
        LogError( ( "Could not save object. Received invalid parameters." ) );
    }

    if( pcFileName != NULL )
    {
        /* Overwrite the file every time it is saved. */
        pxFile = fopen( pcFileName, "w" );

        if( NULL == pxFile )
        {
            LogError( ( "PKCS #11 PAL was unable to save object to file. "
                        "The PAL was unable to open a file with name %s in write mode.", pcFileName ) );
            xHandle = ( CK_OBJECT_HANDLE ) eInvalidHandle;
        }
        else
        {
            ulBytesWritten = fwrite( pucData, sizeof( uint8_t ), ulDataSize, pxFile );

            if( ulBytesWritten != ulDataSize )
            {
                LogError( ( "PKCS #11 PAL was unable to save object to file. "
                            "Expected to write %lu bytes, but wrote %lu bytes.", ulDataSize, ulBytesWritten ) );
                xHandle = ( CK_OBJECT_HANDLE ) eInvalidHandle;
            }
            else
            {
                LogDebug( ( "Successfully wrote %lu to %s", ulBytesWritten, pcFileName ) );
            }
        }

        if( NULL != pxFile )
        {
            ( void ) fclose( pxFile );
        }
    }
    else
    {
        LogError( ( "Could not save object. Unable to find the correct file." ) );
    }

    return xHandle;
}