[TYPO3-core] RFC #15334: Feature: Allow separate cookie domain for FE and BE

[François Suter]

This is an SVN patch request.

Type: New feature

Bugtracker references:
http://bugs.typo3.org/view.php?id=15334

Branches:
Trunk

Problem:
Some clients run the TYPO3 BE under a different domain name for security 
reasons. This causes problems with cookie domains as it is currently 
possible to set a single one only, used by both FE and BE. The current 
workaround would be to avoid defining a cookie domain, but this is not 
secure.

Solution:
The attached patch introduces a separate cookie domain for the BE. If it 
is left blank, the "main" cookie domain is used for both FE and BE (i.e. 
the current behavior is unchanged).

Notes:
How to test:
1) make sure your web site has a domain defined in 
$TYPO3_CONF_VARS['SYS']['cookieDomain'] (if it's blank, you can use any 
domain anyway)
2) define a ServerAlias with some other domain for the web site
3) use that alias to access the TYPO3 BE => it won't work, you get 
logged out every time, because the domain used to access the BE must 
match the domain in $TYPO3_CONF_VARS['SYS']['cookieDomain'].
4) apply the patch, go to the install tool and use the new domain in the 
new property $TYPO3_CONF_VARS['SYS']['cookieDomainBE']
5) log into the BE via the new domain => it should work now.

Cheers

-- 
Francois Suter
Cobweb Development Sarl - http://www.cobweb.ch

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