[TYPO3-core] RFC #11369: jumpUrl should only allow files matching fileDenyPattern

[Ingmar Schlecht]

This is an SVN patch request.

Type: Minor security improvement

Bugtracker references:
http://bugs.typo3.org/view.php?id=11369

Branches:
TYPO3_4-0, TYPO3_4-1, TYPO3_4-2 and trunk

Problem:
jumpUrl should only allow files matching fileDenyPattern, so e.g. PHP
files can not be downloaded with jumpUrl any more.

Solution:
This patch introduces that check and the accompanying error message.

cheers
Ingmar