Class ConfigFile

java.lang.Object

javax.security.auth.login.Configuration

com.sun.security.auth.login.ConfigFile

public class ConfigFile
extends Configuration

This class represents a default implementation for javax.security.auth.login.Configuration.

This object stores the runtime login configuration representation, and is the amalgamation of multiple static login configurations that resides in files. The algorithm for locating the login configuration file(s) and reading their information into this Configuration object is:

1. Loop through the security properties, login.config.url.1, login.config.url.2, ..., login.config.url.X. Each property value specifies a URL pointing to a login configuration file to be loaded. Read in and load each configuration.
2. The system property java.security.auth.login.config may also be set to a URL pointing to another login configuration file (which is the case when a user uses the -D switch at runtime). If this property is defined, and its use is allowed by the security property file (the Security property, policy.allowSystemProperty is set to true), also load that login configuration.
3. If the java.security.auth.login.config property is defined using "==" (rather than "="), then ignore all other specified login configurations and only load this configuration.
4. If no system or security properties were set, try to read from the file, ${user.home}/.java.login.config, where ${user.home} is the value represented by the "user.home" System property.

The configuration syntax supported by this implementation is exactly that syntax specified in the javax.security.auth.login.Configuration class. In addition, the security property policy.expandProperties can be used to control whether system properties in the configuration file are expanded. If not set, the default value is true which means that properties will be expanded.

Since:

1.4

See Also:

• LoginContext
• security properties

Nested Class Summary

Nested classes/interfaces declared in class Configuration

Configuration.Parameters

Modifier and Type	Class	Description
static interface	Configuration.Parameters	This represents a marker interface for Configuration parameters.

Constructor Summary

Constructors

Constructor	Description
ConfigFile()	Create a new Configuration object.
ConfigFile(URI uri)	Create a new Configuration object from the specified URI.

Method Summary

Modifier and Type	Method	Description
AppConfigurationEntry[]	getAppConfigurationEntry(String applicationName)	Retrieve an entry from the Configuration using an application name as an index.
void	refresh()	Refresh and reload the Configuration by re-reading all of the login configurations.

Methods declared in class Configuration

getConfiguration, getInstance, getInstance, getInstance, getParameters, getProvider, getType, setConfiguration

Modifier and Type	Method	Description
static Configuration	getConfiguration()	Get the installed login Configuration.
static Configuration	getInstance(String type, Configuration.Parameters params)	Returns a Configuration object of the specified type.
static Configuration	getInstance(String type, Configuration.Parameters params, String provider)	Returns a Configuration object of the specified type.
static Configuration	getInstance(String type, Configuration.Parameters params, Provider provider)	Returns a Configuration object of the specified type.
Configuration.Parameters	getParameters()	Return Configuration parameters.
Provider	getProvider()	Return the Provider of this Configuration.
String	getType()	Return the type of this Configuration.
static void	setConfiguration(Configuration configuration)	Set the login Configuration.

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Modifier and Type	Method	Description
protected Object	clone()	Creates and returns a copy of this object.
boolean	equals(Object obj)	Indicates whether some other object is "equal to" this one.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
final Class<?>	getClass()	Returns the runtime class of this Object.
int	hashCode()	Returns a hash code value for this object.
final void	notify()	Wakes up a single thread that is waiting on this object's monitor.
final void	notifyAll()	Wakes up all threads that are waiting on this object's monitor.
String	toString()	Returns a string representation of the object.
final void	wait()	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
final void	wait(long timeoutMillis)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
final void	wait(long timeoutMillis, int nanos)	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Constructor Details

ConfigFile

public ConfigFile()

Create a new Configuration object.

Throws:

SecurityException - if the Configuration can not be initialized

ConfigFile

public ConfigFile(URI uri)

Create a new Configuration object from the specified URI.

Parameters:

uri - the URI

Throws:

SecurityException - if the Configuration can not be initialized

NullPointerException - if uri is null

Method Details

getAppConfigurationEntry

public AppConfigurationEntry[] getAppConfigurationEntry(String applicationName)

Retrieve an entry from the Configuration using an application name as an index.

Specified by:

getAppConfigurationEntry in class Configuration

Parameters:

applicationName - the name used to index the Configuration

Returns:

an array of AppConfigurationEntry which correspond to the stacked configuration of LoginModules for this application, or null if this application has no configured LoginModules.

refresh

public void refresh()

Refresh and reload the Configuration by re-reading all of the login configurations.

Overrides:

refresh in class Configuration