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:

  • 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
      Throws:
      SecurityException - if the caller does not have permission to refresh the Configuration