認証方法の記述法
DokuWiki's authentication system is highly modular and can generally speaking use everything to authenticate that is accessible from PHP.
If none of the provided 認証方法 does not do what you want you can simply create your own one. Backends are stored in the inc/auth/ folder and need to be named <backend>.class.php where <backend> is the name of your authentication backend. In this file you need to specify a class named auth_<backend>. You class should either extend one of the existing backends or the auth_basic class defined in inc/auth/basic.class.php.
In your class you need to override a few methods and set some public fields from the base class. Some descriptions follow, but for the doing the implementation you need to have a look at base class' comments!
If you write a new backend be sure to share your code with the community!
Fields to set
$success
This simple boolean needs to be set to true in your constructor if your auth module was correctly initialized. Use this to notify the frontend if anything went wrong by setting it to false.
$cando
The $cando field is an associative array of booleans. You need to set the array fields to true for all functions your backend provides. Here is a list of keys in $cando and their meaning:
| addUser | can Users be created? |
| delUser | can Users be deleted? |
| modLogin | can login names be changed? |
| modPass | can passwords be changed? |
| modName | can real names be changed? |
| modMail | can emails be changed? |
| modGroups | can groups be changed? |
| getUsers | can a (filtered) list of users be retrieved? |
| getUserCount | can the number of users be retrieved? |
| getGroups | can a list of available groups be retrieved? |
| external | does the module do external auth checking? |
| logoff | has the module some special logoff method? |
Required Methods
Only two functions need to be implemented. But the more you do the more the frontend will be able to do.
Constructor
Well your class should have a constructor of course 
Set the fields mentioned above here.
checkPass()
This function need to check if the given user exists and the given plaintext password is correct.
getUserData()
Used to return user information like email address and real name.
Optional Methods
All these methods are optional and will only be called if the appropriate cando fields are set
trustExternal()
If $cando['external'] is true, this function is will be used to authenticate a user – all other DokuWiki internals will not be used for authenticating.
The function can be used to authenticate against third party cookies or Apache auth mechanisms and replaces the auth_login() function from inc/auth.php.
Have a look at the punbb backend for an example usage of this function.
If this function is implemented you may omit all other functions from your module (even the required ones above - except for the constructor of course).
logOff()
If $cando['logoff'] is set to true this function will be called on a logoff event. Use it to clear cookies or similar actions. Probably only useful with trustExternal
createUser()
Creates a user with the provided data.
modifyUser()
Modifies a user's data.
deleteUser()
Deletes one or more users.
getUserCount()
Returns the number of users matching certain filter criteria.
retieveUsers()
Fetches userdata for multiple users matching a certain filter criteria.
addGroup()
Creates a new Group
retrieveGroups()
List all available groups
