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The most wanted new feature of Joomla 1.6, the new ACL system explained. Including the ACL Manager extension that is in development by Sander Potjer. Given at Joomla Days United Kingdom, 2010.
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Joomla! 1.6 ACL
Joomla! 1.6 ACLSander Potjer
Joomla!Days UK - 30th & 31st October 2010
Joomla! 1.6 ACL
Sander Potjer
• Co-founder of Dutch community: JoomlaCommunity.eu
• Organizer Joomla!Day Netherlands
• Organizer Joomla! User Groups in The Netherlands
• Company: Sander Potjer Webdesign
• Yireo team member
• Student Architecture
Joomla! 1.6 ACL
Joomla! 1.6 ACL
Joomla! 1.6 ACL
It took a while...
• http://www.slideshare.net/JohanJanssens/drupalcon-2005-joomla-drupal-and-you-presentation
DrupalCon, October 2005Johan Janssens
Joomla! 1.6 ACL
• ACL = Access Control List
• Access to parts of the website– e.g. menu / module visibility– “view” action
• User actions on objects– e.g. create / edit / delete article
ACL?!
Joomla! 1.6 ACL
ACL in Joomla! 1.5 & 1.6 (Access)
• 7 fixed Groups– Public, Registered, Author, Editor,
Publisher, Manager, Administrator and Super-Administrator
– Hierarchical structure
• User can be assigned to one group
• 3 fixed Access Levels– Public, Registered and Special
• Fixed relation between Groups and Access Levels
Joomla! 1.6 ACL
• 7 fixed Groups– Public, Registered, Author, Editor,
Publisher, Manager, Administrator and Super-Administrator
– Hierarchical structure
• User can be assigned to one group
• 3 fixed Access Levels– Public, Registered and Special
• Fixed relation between Groups and Access Levels
• Unlimited Groups– user-defined– not hierarchical
• User can be assigned to multiple groups
• Unlimited Access Levels– user-defined
• Any combination of Groups can be assigned to any Access Level
ACL in Joomla! 1.5 & 1.6 (Access)
Joomla! 1.6 ACL
ACL in Joomla! 1.5 & 1.6 (Actions)
• Fixed Actions per group– Create / edit / delete /
admin access / etc.
• Permission scope for entire site– Same permission for all objects
• Permission inheritance not applicable
• http://brian.teeman.net/joomla-gps/joomla-15-acl-explained.html
Joomla! 1.6 ACL
• Fixed Actions per group– Create / edit / delete /
admin access / etc.
• Permission scope for entire site– Same permission for all objects
• Permission inheritance not applicable
• User defined Actions per group
– Create / edit / delete / admin access / etc.
• Permission scope at multiple levels
– Site, Component, Category, Object
• Permission can be inherited
– from parent Groups and parent Categories
ACL in Joomla! 1.5 & 1.6 (Actions)
Joomla! 1.6 ACL
Joomla! 1.6 ACL Overview(r19286, 29-10-2010)
Joomla! 1.6 ACL
Joomla 1.6 ACL Overview
• http://community.joomla.org/blogs/community/1252-16-acl.html
Joomla! 1.6 ACL
Joomla 1.6 ACL: User
• Guest is also a user
• Users can be assigned to one or several groups
Joomla! 1.6 ACL
Joomla 1.6 ACL: Permissions
• Assigned to group (not user!)
• 9 Actions– Site Login– Admin Login– Configure– Access Comp.– Create– Delete– Edit– Edit State– Edit Own
Joomla! 1.6 ACL
Joomla 1.6 ACL: Action Permission Groups
• Users with same permissions
• User can be in multiple groups
• Permissions are inherited between groups
• Unlimited (sub-)groups
Joomla! 1.6 ACL
Joomla 1.6 ACL: Access Level
• Which group can view what (article, menu, module, etc.)
• Permissions are not inherited between Access Levels
• Even Super Users can not view
Joomla! 1.6 ACL
Permissions
Joomla! 1.6 ACL
How Action Permissions work
• Not set– ‘soft’ deny– can be overridden by ‘allow’
• Inherited– value from a higher permission level– value from a higher user group
• Allowed– action for this permission level and lower levels– action for this user group and child groups
• Denied & Locked– action for this permission level and lower levels– action for this user group and child groups– always win!
Joomla! 1.6 ACL
Permission Hierarchy Levels
• Global configuration (Level 1)– default permissions for each action and group
• Component Options (Level 2)– can override the default permissions for a component
• Category (Level 3)– can override the default permissions and component options– applies to components with categories (Articles, Banners, etc...)
• Item (Level 4)– can override all permissions above for an object– only applies to articles in Joomla 1.6 core
• Override permissions only works if higher level is not denied & locked!
Joomla! 1.6 ACL
Permissions: Global Configuration (Level 1)
Joomla! 1.6 ACL
Permissions: Component Options (Level 2)
Joomla! 1.6 ACL
Permissions: Category (Level 3)
Joomla! 1.6 ACL
Permissions: Item (Level 4)
Joomla! 1.6 ACL
Inheriting example for action ‘Create’
• http://www.theartofjoomla.com/home/5-commentary/84-introducing-the-new-permissions-in-joomla-16.html
Level 1
Level 2
Level 3
Level 4
Joomla! 1.6 ACL
Inheriting example for action ‘Create’
• http://www.theartofjoomla.com/home/5-commentary/84-introducing-the-new-permissions-in-joomla-16.html
Level 1
Level 2
Level 3
Level 4
Joomla! 1.6 ACL
Available Joomla 1.6Permissions and Levels
for a Group
Joomla! 1.6 ACL
Action: Edit State
Joomla! 1.6 ACL
ACL Manager by Sander Potjer
Joomla! 1.6 ACL
ACL Manager for Joomla! 1.6
Joomla! 1.6 ACL
ACL Manager for Joomla! 1.6
Joomla! 1.6 ACL
ACL Manager for Joomla! 1.6
Joomla! 1.6 ACL
ACL Manager for Joomla! 1.6
www.aclmanager.net
Joomla! 1.6 ACL
Joomla! 1.6 ACL live demo
Joomla! 1.6 ACL
Some Notes
Joomla! 1.6 ACL
User in multiple groups
• USA group– Allow on edit ‘USA’ category– Deny on edit ‘Europe’ category
• Europe group– Allow on edit ‘Europe’ category– Deny on edit ‘USA’ category
• User in USA & Europe group– Deny on edit ‘Europe’ category– Deny on edit ‘USA’ category– Deny always win
Joomla! 1.6 ACL
What if I locked myself out? :-)
Joomla! 1.6 ACL
What if I locked myself out? :-)
• No need to access your database
• Open your configuration.php and add:– public $root_user = 'username';
• You can login again and perform all actions
• Great for playing around with the new ACL
• Don’t forget to remove the $root_user line!
Joomla! 1.6 ACL
Debug Permissions
• Turn on the ‘Debug System’ in the Global Configuration
• Go to ‘User Manager’ or ‘Groups’
• Click on ‘Debug Permission Report’ below User or Group name
Joomla! 1.6 ACL
Practical ACL Tips
Joomla! 1.6 ACL
ACL Tips
• Write down your ACL requirements for a website before implementing
• Joomla 1.5 User Groups are for backward compatibility in Joomla 1.6, you may remove them
• Use multi-nested Groups only if needed / know what you are doing (so inheriting value only between levels, not also groups)
Joomla! 1.6 ACL
ACL Tips
• Structure your content properly to handle the permissions (don’t set permissions per article/make a parent category with nested categories with same permissions)
• Keep flexible for lower permission levels/groups: try to avoid the ‘Denied & Locked’ as long as possible
• Idea: Make a Group for each Action so you can assign actions directly to a user
Joomla! 1.6 ACL
Resources
• http://www.yireo.com/tutorials/joomla/joomla-administration/402-joomla-16-acls-1-marketing-group
• http://community.joomla.org/blogs/community/1252-16-acl.html• http://docs.joomla.org/ACL_Tutorial_for_Joomla_1.6• http://docs.joomla.org/Access_Control_System_In_Joomla_1.6• http://www.theartofjoomla.com/home/5-commentary/84-introducing-the-new-
permissions-in-joomla-16.html• http://www.theartofjoomla.com/home/38-talks/101-the-joomla-16-video-
access-controls.html• http://www.aclmanager.net