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java.lang.Object SK.gnome.dwarf.auth.login.GenericLoginModule SK.gnome.dwarf.auth.login.PlaintextLoginModule
The login module based on a plaintext file.
This module reads user information from a plain text file. Each user record consists of a login name followed by the "=" character, followed by at least four fields separated by colons. The first field is the user password encoded by an arbitrary algorithm. A single asterisk may be used instead to disable the login. The second field is the full name of the user. The third and fourth fields contain the number of milliseconds from the midnight, January 1, 1970 UTC, when the account and the password expires. Other than a positive integer value disables the expiration. The optional fifth field may be a comma-separated list of user's roles. Each line which starts with the "#" character, as well as empty lines will be ignored.
Examples of the user database:
# user: joe # full name: Joe Public # password: non-real, i.e. login is disabled # account expiration: no # password expiration: no # roles: no joe=*:Joe Public:0:0: # user: jim # full name: Jim Beam # password: xxxxxxx # account expiration: no # password expiration: about 10 years in the future # roles: users jim=Er456.fd/89A:Jim Beam:0:1016234197723:users # user: mail # full name: Mail Daemon # password: non-real, i.e. login is disabled # account expiration: no # password expiration: no # roles: daemon, mail mail=*:Mail Daemon:0:0:daemon,mail
Passwords may be encrypted using the PasswordEncoder
implementations, specified via the encoder option key.
The user database location is specified via the file option key. It must reference an existing file in the filesystem.
This login module returns an array of principals representing the user identities.
This array always contains one UserPrincipal
with the name of the user. Optionally,
it may contain several RolePrincipal
objects according to the user's roles.
This module supports case-insensitive logins and identification feature as described
in the GenericLoginModule
.
Sample configuration entry:
Test1 { SK.gnome.dwarf.auth.login.PlaintextLoginModule required debug="true" file="conf/users.properties"; };
Field Summary |
Fields inherited from class SK.gnome.dwarf.auth.login.GenericLoginModule |
encoder |
Constructor Summary | |
PlaintextLoginModule()
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Method Summary | |
void |
initialize(javax.security.auth.Subject subject,
javax.security.auth.callback.CallbackHandler cbHandler,
java.util.Map sharedState,
java.util.Map options)
Initializes this login module. |
protected java.security.Principal[] |
validate(java.lang.String username,
char[] password)
Validates the given user. |
Methods inherited from class SK.gnome.dwarf.auth.login.GenericLoginModule |
abort, commit, debug, getBooleanOption, getIntOption, getStringOption, checkPassword, isDebugOn, isIdentOn, isIgnoreCaseOn, login, logout |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public PlaintextLoginModule()
Method Detail |
public void initialize(javax.security.auth.Subject subject, javax.security.auth.callback.CallbackHandler cbHandler, java.util.Map sharedState, java.util.Map options)
GenericLoginModule
initialize
in interface javax.security.auth.spi.LoginModule
initialize
in class GenericLoginModule
subject
- the subject to be authenticatedcbHandler
- the callbackHandler for getting the username and passwordsharedState
- shared login module stateoptions
- options specified in the login configuration for this particular
login moduleprotected java.security.Principal[] validate(java.lang.String username, char[] password) throws javax.security.auth.login.LoginException
GenericLoginModule
This method must validate a user according to the given username and password, and should return an array of principal objects representing the various user's identities. If no principals are found, an empty array must be returned. If the user could not be validated, a LoginException is thrown to indicate the failed login. Exception is then propagated to the calling LoginContext object.
It is recommended for the implementations to use the GenericLoginModule.checkPassword(String, char[])
method to validate the password using the current PasswordEncoder
instance.
This method may be implemented in a way that if the password argument is null, it will bypass the password check and will test the user existence only. However, the subject procesed by this type of authentication must not be used to represent an authenticated user. The implementations must consult the ident option key prior to enabling this feature.
The ignorecase option key may be consulted by the implementing modules, too, for enabling the case-insensitive logins.
validate
in class GenericLoginModule
username
- the name of the userpassword
- the user password
javax.security.auth.login.LoginException
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