Class UnixLoginModule
- All Implemented Interfaces:
LoginModule
public class UnixLoginModule extends Object implements LoginModule
LoginModule
imports a user's Unix Principal
information (UnixPrincipal
, UnixNumericUserPrincipal
, and UnixNumericGroupPrincipal
) and associates them with the current Subject
. This LoginModule recognizes the debug option. If set to true in the login Configuration, debug messages will be output to the output stream, System.out.
Constructor Summary
Constructor | Description |
---|---|
UnixLoginModule() |
Creates a UnixLoginModule . |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
boolean |
abort() |
Abort the authentication (second phase). |
boolean |
commit() |
Commit the authentication (second phase). |
void |
initialize |
Initialize this LoginModule . |
boolean |
login() |
Authenticate the user (first phase). |
boolean |
logout() |
Logout the user |
Constructor Details
UnixLoginModule
public UnixLoginModule()
UnixLoginModule
.Method Details
initialize
public void initialize(Subject subject, CallbackHandler callbackHandler, Map<String,?> sharedState, Map<String,?> options)
LoginModule
.- Specified by:
-
initialize
in interfaceLoginModule
- Parameters:
-
subject
- theSubject
to be authenticated. -
callbackHandler
- aCallbackHandler
for communicating with the end user (prompting for usernames and passwords, for example). -
sharedState
- sharedLoginModule
state. -
options
- options specified in the loginConfiguration
for this particularLoginModule
.
login
public boolean login() throws LoginException
The implementation of this method attempts to retrieve the user's Unix Subject
information by making a native Unix system call.
- Specified by:
-
login
in interfaceLoginModule
- Returns:
- true in all cases (this
LoginModule
should not be ignored). - Throws:
-
FailedLoginException
- if attempts to retrieve the underlying system information fail. -
LoginException
- if the authentication fails
commit
public boolean commit() throws LoginException
This method is called if the LoginContext's overall authentication succeeded (the relevant REQUIRED, REQUISITE, SUFFICIENT and OPTIONAL LoginModules succeeded).
If this LoginModule's own authentication attempt succeeded (the importing of the Unix authentication information succeeded), then this method associates the Unix Principals with the Subject
currently tied to the LoginModule
. If this LoginModule's authentication attempted failed, then this method removes any state that was originally saved.
- Specified by:
-
commit
in interfaceLoginModule
- Returns:
- true if this LoginModule's own login and commit attempts succeeded, or false otherwise.
- Throws:
-
LoginException
- if the commit fails
abort
public boolean abort() throws LoginException
This method is called if the LoginContext's overall authentication failed. (the relevant REQUIRED, REQUISITE, SUFFICIENT and OPTIONAL LoginModules did not succeed).
This method cleans up any state that was originally saved as part of the authentication attempt from the login
and commit
methods.
- Specified by:
-
abort
in interfaceLoginModule
- Returns:
- false if this LoginModule's own login and/or commit attempts failed, and true otherwise.
- Throws:
-
LoginException
- if the abort fails
logout
public boolean logout() throws LoginException
This method removes the Principals associated with the Subject
.
- Specified by:
-
logout
in interfaceLoginModule
- Returns:
- true in all cases (this
LoginModule
should not be ignored). - Throws:
-
LoginException
- if the logout fails
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/17/docs/api/jdk.security.auth/com/sun/security/auth/module/UnixLoginModule.html