|Version 13 (modified by sandinak, 4 years ago) (diff)|
Active Directory Auth Plugin
The Active Directory Auth Plugin is a password store for the AccountManagerPlugin that provides authentication and groups from Active Directory.
Users are authenticated by performing an ldap_bind against the AD server using their credentials. The plugin will also pull the email address and display name from Active Directory and populate the session_attribute table. See Populating ''Assign To'' Drop Down in Trac for more information on why.
- One can specify a group which users must be a member of in order to log in.
- Additionally, one may specify an admin group. If a user is a member of the admin group, then they will automatically be granted the TRAC_ADMIN permission.
- Finally, ActiveDirectory groups are extended into the trac namespace. They can be used to extend permissions by AD group.
- AD groups are prefixed by @
- group names are lowercase and spaces are replaced with underscores.
See GroupManagement for more details.
Given the expense of traversing the network for authorizations, a two-stage cache has been implemented. This caches data in the database for all instances of python, and in memory for each instance; while maintaining expiration and flushing the cache(s) as necessary. See: CacheManagement for details.
If you have any issues, create a new ticket.
Download the zipped source from [download:activedirectoryauthplugin here]
- You must install AccountManagerPlugin in order to use this plugin.
- Python-LDAP is also required and can be downloaded here
Follow the Trac documentation on how to install Trac plugins
- starting with 0.3, a database upgrade will be required as part of the installation.
- install the plugin and it's prerequisites
- update the database
trac-admin /var/trac/instance upgrade
- restart apache
All config options go under the [account-manager] config heading. Options for this module are:
[account-manager] #--to use this module with AccountManager, ADAuthStore must be enabled inside of AccountManager password_store = ADAuthStore #--define the Active Directory host address here. A port other than default(389) is set as # hostname:port ad_server = adserver.example.com #-- the Active Directory's base DN to search from, this is likely just your domain base_dn = DC=example,DC=com #-- the user/password to search active directory from, it must be a valid bind_dn = email@example.com bind_passwd = ldapuserpassword #-- show disabled users # remember users MUST have logged in to get into the session table before they # show up. show_disabled_users = 1 #-- timeout for an ldap operation before in seconds ldap_timeout = 5 #-- the default charset for the ldap server charset = utf-9 #-- the DN (distinguishing name) for the group that contains users that can login to Trac # if this isn't specified then any valid user in active directory is accepted auth_group = CN=Alltechs,OU=Mail enabled groups,OU=Email,DC=serverplus,DC=com #-- the DN for the group that contains users that should have the TRAC_ADMIN # permission. If this option is not given, no user groups will be give the # TRAC_ADMIN permission. This this option is enabled you must specify the # UserExtensiblePermissionStore as the trac permission store, such as: # [trac] # permission_store = UserExtensiblePermissionStore admin_group = CN=Administration,DC=example,DC=com #-- cached entry timeout in seconds cache_timeout = 90 #-- memorycache size in entries memcache_size = 100 #-- memory cache prune size in percentage memcache_prune_percent = 5 [trac] permission_store = UserExtensiblePermissionStore
If you are unsure of what the DNs for your groups are, you may want to use an LDAP browser to inspect your Active Directory schema to find out a group's DN.
If you see Trac throwing an exception similar to "OPERATIONS_ERROR: In order to perform this operation a successful bind must be completed on the connection" when you know the bind user/pass is correct you will want to try connection to active directory on port 3268. This may happen when AD is running across multiple machines.