org.osgi.service.http.HttpContext Maven / Gradle / Ivy
/*
* Copyright (c) OSGi Alliance (2000, 2013). All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.osgi.service.http;
import java.io.IOException;
import java.net.URL;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* This interface defines methods that the Http Service may call to get
* information about a registration.
*
*
* Servlets and resources may be registered with an {@code HttpContext} object;
* if no {@code HttpContext} object is specified, a default {@code HttpContext}
* object is used. Servlets that are registered using the same
* {@code HttpContext} object will share the same {@code ServletContext} object.
*
*
* This interface is implemented by users of the {@code HttpService}.
*
* @author $Id: d8c0c4b76891e6be64354967fc984b407bc970ef $
*/
public interface HttpContext {
/**
* {@code HttpServletRequest} attribute specifying the name of the
* authenticated user. The value of the attribute can be retrieved by
* {@code HttpServletRequest.getRemoteUser}. This attribute name is
* {@code org.osgi.service.http.authentication.remote.user}.
*
* @since 1.1
*/
public static final String REMOTE_USER = "org.osgi.service.http.authentication.remote.user";
/**
* {@code HttpServletRequest} attribute specifying the scheme used in
* authentication. The value of the attribute can be retrieved by
* {@code HttpServletRequest.getAuthType}. This attribute name is
* {@code org.osgi.service.http.authentication.type}.
*
* @since 1.1
*/
public static final String AUTHENTICATION_TYPE = "org.osgi.service.http.authentication.type";
/**
* {@code HttpServletRequest} attribute specifying the {@code Authorization}
* object obtained from the {@code org.osgi.service.useradmin.UserAdmin}
* service. The value of the attribute can be retrieved by
* {@code HttpServletRequest.getAttribute(HttpContext.AUTHORIZATION)}. This
* attribute name is {@code org.osgi.service.useradmin.authorization}.
*
* @since 1.1
*/
public static final String AUTHORIZATION = "org.osgi.service.useradmin.authorization";
/**
* Handles security for the specified request.
*
*
* The Http Service calls this method prior to servicing the specified
* request. This method controls whether the request is processed in the
* normal manner or an error is returned.
*
*
* If the request requires authentication and the Authorization header in
* the request is missing or not acceptable, then this method should set the
* WWW-Authenticate header in the response object, set the status in the
* response object to Unauthorized(401) and return {@code false}. See also
* RFC 2617: HTTP Authentication: Basic and Digest Access Authentication
* (available at http://www.ietf.org/rfc/rfc2617.txt).
*
*
* If the request requires a secure connection and the {@code getScheme}
* method in the request does not return 'https' or some other acceptable
* secure protocol, then this method should set the status in the response
* object to Forbidden(403) and return {@code false}.
*
*
* When this method returns {@code false}, the Http Service will send the
* response back to the client, thereby completing the request. When this
* method returns {@code true}, the Http Service will proceed with servicing
* the request.
*
*
* If the specified request has been authenticated, this method must set the
* {@link #AUTHENTICATION_TYPE} request attribute to the type of
* authentication used, and the {@link #REMOTE_USER} request attribute to
* the remote user (request attributes are set using the
* {@code setAttribute} method on the request). If this method does not
* perform any authentication, it must not set these attributes.
*
*
* If the authenticated user is also authorized to access certain resources,
* this method must set the {@link #AUTHORIZATION} request attribute to the
* {@code Authorization} object obtained from the
* {@code org.osgi.service.useradmin.UserAdmin} service.
*
*
* The servlet responsible for servicing the specified request determines
* the authentication type and remote user by calling the
* {@code getAuthType} and {@code getRemoteUser} methods, respectively, on
* the request.
*
* @param request the HTTP request
* @param response the HTTP response
* @return {@code true} if the request should be serviced, {@code false} if
* the request should not be serviced and Http Service will send the
* response back to the client.
* @throws java.io.IOException may be thrown by this method. If this occurs,
* the Http Service will terminate the request and close the socket.
*/
public boolean handleSecurity(HttpServletRequest request, HttpServletResponse response) throws IOException;
/**
* Maps a resource name to a URL.
*
*
* Called by the Http Service to map a resource name to a URL. For servlet
* registrations, Http Service will call this method to support the
* {@code ServletContext} methods {@code getResource} and
* {@code getResourceAsStream}. For resource registrations, Http Service
* will call this method to locate the named resource. The context can
* control from where resources come. For example, the resource can be
* mapped to a file in the bundle's persistent storage area via
* {@code bundleContext.getDataFile(name).toURL()} or to a resource in the
* context's bundle via {@code getClass().getResource(name)}
*
* @param name the name of the requested resource
* @return URL that Http Service can use to read the resource or
* {@code null} if the resource does not exist.
*/
public URL getResource(String name);
/**
* Maps a name to a MIME type.
*
* Called by the Http Service to determine the MIME type for the name. For
* servlet registrations, the Http Service will call this method to support
* the {@code ServletContext} method {@code getMimeType}. For resource
* registrations, the Http Service will call this method to determine the
* MIME type for the Content-Type header in the response.
*
* @param name determine the MIME type for this name.
* @return MIME type (e.g. text/html) of the name or {@code null} to
* indicate that the Http Service should determine the MIME type
* itself.
*/
public String getMimeType(String name);
}