Apache

Web Console Security Provider

WebConsoleSecurityProvider | WebConsoleSecurityProvider2 | Sample

As of Apache Felix Web Console 3.1.0 security of the Web Console can be extended by providing a WebConsoleSecurityProvicer service. An extension to this service has been introduced with the WebConsoleSecurityProvider2 service in Apache Felix Web Console 3.1.4.

WebConsoleSecurityProvider

The WebConsoleSecurityProvider service provides two methods:

/**
 * Authenticates the user with the given user name and password.
 *
 * @param username The name of the user presented by the client
 * @param password The password presented by the client
 * @return Some object representing the authenticated user indicating general
 *         access to be granted to the web console. If the user cannot be
 *         authenticated (e.g. unknown user name or wrong password) or the
 *         user must not be allowed access to the web console at all
 *         <code>null</code> must be returned from this method.
 */
public Object authenticate( String username, String password );


/**
 * Checks whether bthe authenticated user has the given role permission.
 *
 * @param user The object referring to the authenticated user. This is the
 *      object returned from the {@link #authenticate(String, String)}
 *      method and will never be <code>null</code>.
 * @param role The requested role
 * @return <code>true</code> if the user is given permission for the given
 *      role.
 */
public boolean authorize( Object user, String role );
Use of the authorize method is not currently implemented, though. Mainly this is because it is not readily clear, what exactly the role means. One possible interpretation could be that this is the label of the plugin whose access is checked. Or it might be a combination of the plugin called and the request method used.

The drawback of the WebConsoleSecurityProvider interface is that it just provides a mechanism to check for a user name and password using HTTP BASIC authentication. If other authenication mechanisms should be used the WebConsoleSecurityProvider2 interface introduced in Apache Felix Web Console 3.1.4 can be used.

WebConsoleSecurityProvider2

The WebConsoleSecurityProvider2 interface extends the WebConsoleSecurityProvider by a single method:

/**
 * The name of the request attribute providing the object representing the
 * authenticated user. This object is used to call the
 * {@link WebConsoleSecurityProvider#authorize(Object, String)} to
 * authorize access for certain roles.
 */
String USER_ATTRIBUTE = "org.apache.felix.webconsole.user";


/**
 * Authenticates the given request or asks the client for credentials.
 * <p>
 * Implementations of this method are expected to respect and implement
 * the semantics of the <code>HttpContext.handleSecurity</code> method
 * as specified in the OSGi HTTP Service specification.
 * <p>
 * If this method returns <code>true</code> it is assumed the request
 * provided valid credentials identifying the user as accepted to access
 * the web console. In addition, the {@link #USER_ATTRIBUTE} request
 * attribute must be set to a non-<code>null</code> object reference
 * identifying the authenticated user.
 * <p>
 * If this method returns <code>false</code> the request to the web console
 * is terminated without any more response sent back to the client. That is
 * the implementation is expected to have informed the client in case of
 * non-granted access.
 *
 * @param request The request object
 * @param response The response object
 * @return <code>true</code> If the request provided valid credentials.
 */
public boolean authenticate( HttpServletRequest request, HttpServletResponse response );

This method is in full control of authentication and thus has to extract the user credentials from the request and can also fail the request.

Sample

A sample of a WebConsoleSecurityProvider service is the Apache Sling implementation SlingWebConsoleSecurityProvider. This implementation uses a JCR implementation to login to the repository and thus validate the credentials.

Last modified by fmeschbe on Sun Sep 25 13:10:56 EDT 2011
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