org.apache.catalina.authenticator

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Java Source Code / Java Documentation » Sevlet Container » apache tomcat 6.0.14 » org.apache.catalina.authenticator 
org.apache.catalina.authenticator

This package contains Authenticator implementations for the various supported authentication methods (BASIC, DIGEST, and FORM). In addition, there is a convenience base class, AuthenticatorBase, for customized Authenticator implementations.

If you are using the standard context configuration class (org.apache.catalina.startup.ContextConfig) to configure the Authenticator associated with a particular context, you can register the Java class to be used for each possible authentication method by modifying the following Properties file:

    src/share/org/apache/catalina/startup/Authenticators.properties

Each of the standard implementations extends a common base class (AuthenticatorBase), which is configured by setting the following JavaBeans properties (with default values in square brackets):

  • cache - Should we cache authenticated Principals (thus avoiding per-request lookups in our underyling Realm) if this request is part of an HTTP session? [true]
  • debug - Debugging detail level for this component. [0]

The standard authentication methods that are currently provided include:

  • BasicAuthenticator - Implements HTTP BASIC authentication, as described in RFC 2617.
  • DigestAuthenticator - Implements HTTP DIGEST authentication, as described in RFC 2617.
  • FormAuthenticator - Implements FORM-BASED authentication, as described in the Servlet API Specification, version 2.2.
Java Source File NameTypeComment
AuthenticatorBase.javaClass Basic implementation of the Valve interface that enforces the <security-constraint> elements in the web application deployment descriptor.
BasicAuthenticator.javaClass An Authenticator and Valve implementation of HTTP BASIC Authentication, as outlined in RFC 2617: "HTTP Authentication: Basic and Digest Access Authentication."
author:
   Craig R.
Constants.javaClass
DigestAuthenticator.javaClass An Authenticator and Valve implementation of HTTP DIGEST Authentication (see RFC 2069).
author:
   Craig R.
FormAuthenticator.javaClass An Authenticator and Valve implementation of FORM BASED Authentication, as described in the Servlet API Specification, Version 2.2.
author:
   Craig R.
NonLoginAuthenticator.javaClass An Authenticator and Valve implementation that checks only security constraints not involving user authentication.
author:
   Craig R.
SavedRequest.javaClass Object that saves the critical information from a request so that form-based authentication can reproduce it once the user has been authenticated.

IMPLEMENTATION NOTE - It is assumed that this object is accessed only from the context of a single thread, so no synchronization around internal collection classes is performed.
author:
   Craig R.

SingleSignOn.javaClass A Valve that supports a "single sign on" user experience, where the security identity of a user who successfully authenticates to one web application is propogated to other web applications in the same security domain.
SingleSignOnEntry.javaClass A class that represents entries in the cache of authenticated users. This is necessary to make it available to AuthenticatorBase subclasses that need it in order to perform reauthentications when SingleSignOn is in use.
author:
   B Stansberry, based on work by Craig R.
SSLAuthenticator.javaClass An Authenticator and Valve implementation of authentication that utilizes SSL certificates to identify client users.
author:
   Craig R.
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