[TYPO3-mvc] Fill TCA field default with be_user realName

[Henk Scholten]

Hello,

I have the following TCA:

'author' => array(
	'exclude' => 0,
	'label' => 
'LLL:EXT:lala/Resources/Private/Language/locallang_db.xlf:tx_lala_domain_model_download.author',
	'config' => array(
		'type' => 'input',
		'size' => 30,
		'eval' => 'trim',
		'default' => ''
	),
),

I want to default fill the author with the name of the current logged in 
backend user. In TYPO3 4.5 i just could use $GLOBALS['BE_USER']... But 
what is the approach in TYPO3 6.2?

Kin regards,
Henk