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 | Description |
---|---|
UnixLoginModule() |
Creates a UnixLoginModule . |
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 |
public UnixLoginModule()
UnixLoginModule
.public void initialize(Subject subject, CallbackHandler callbackHandler, Map<String,?> sharedState, Map<String,?> options)
LoginModule
.initialize
in interface LoginModule
subject
- the Subject
to be authenticated.callbackHandler
- a CallbackHandler
for communicating with the end user (prompting for usernames and passwords, for example).sharedState
- shared LoginModule
state.options
- options specified in the login Configuration
for this particular LoginModule
.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.
login
in interface LoginModule
LoginModule
should not be ignored).FailedLoginException
- if attempts to retrieve the underlying system information fail.LoginException
- if the authentication failspublic 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.
commit
in interface LoginModule
LoginException
- if the commit failspublic 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.
abort
in interface LoginModule
LoginException
- if the abort failspublic boolean logout() throws LoginException
This method removes the Principals associated with the Subject
.
logout
in interface LoginModule
LoginModule
should not be ignored).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/21/docs/api/jdk.security.auth/com/sun/security/auth/module/UnixLoginModule.html