[Typo3-dev] Hook request: t3lib_userauthgroup

["Stig N. Færch"]

Some time ago I posted something about permissions/roles.
http://lists.netfielders.de/pipermail/typo3-dev/2004-December/007393.html

I just found that what I really want to do is actually quite simple 
through an BE_extension, though I need a hook for it.

I want to create a new field in the be_groups table called 'role', so 
that you can mark be_groups as roles.

If a user is assigned more than one role, the user can now switch among 
its roles through a selector-box.

When a role is selected, only the permissions and mounts of this 
be_group(and it's non-role child be_groups) and be_groups which are not 
roles will be activated.

This can all be controlled through the function fetchGroups in 
t3lib_userauthgroup.php.

Instead of this:
###$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', 
$this->usergroup_table, 'deleted=0 AND hidden=0 AND pid=0 AND uid IN 
('.$grList.')'.$lockToDomain_SQL);###

I could use this:
###$res = $GLOBALS['TYPO3_DB']->exec_SELECTquery('*', 
this->usergroup_table, 'deleted=0 AND hidden=0 AND pid=0 AND uid IN 
('.$grList.') AND !(role=1 AND uid NOT IN 
('.$roleIdList.'))'.$lockToDomain_SQL);###
... to deactive not activated roles.


Now, - I haven't tried to use hooks before, - but if I had a hook in 
this function, - wouldn't I be able to reach my goal?

Any ideas how to implement this the best way?


Best Regards
Stig Nørgaard Færch