| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.felix.webconsole.internal.servlet; |
| |
| |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.net.URL; |
| |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.felix.webconsole.WebConsoleSecurityProvider; |
| import org.apache.felix.webconsole.WebConsoleSecurityProvider2; |
| import org.osgi.service.http.HttpContext; |
| import org.osgi.service.http.HttpService; |
| import org.osgi.util.tracker.ServiceTracker; |
| |
| |
| final class OsgiManagerHttpContext implements HttpContext |
| { |
| |
| private static final String HEADER_WWW_AUTHENTICATE = "WWW-Authenticate"; |
| |
| private static final String HEADER_AUTHORIZATION = "Authorization"; |
| |
| private static final String AUTHENTICATION_SCHEME_BASIC = "Basic"; |
| |
| private final HttpContext base; |
| |
| private final ServiceTracker tracker; |
| |
| private final String username; |
| |
| private final String password; |
| |
| private final String realm; |
| |
| |
| OsgiManagerHttpContext( HttpService httpService, final ServiceTracker tracker, final String username, |
| final String password, final String realm ) |
| { |
| this.tracker = tracker; |
| this.username = username; |
| this.password = password; |
| this.realm = realm; |
| this.base = httpService.createDefaultHttpContext(); |
| } |
| |
| |
| public String getMimeType( String name ) |
| { |
| return this.base.getMimeType( name ); |
| } |
| |
| |
| public URL getResource( String name ) |
| { |
| URL url = this.base.getResource( name ); |
| if ( url == null && name.endsWith( "/" ) ) |
| { |
| return this.base.getResource( name.substring( 0, name.length() - 1 ) ); |
| } |
| return url; |
| } |
| |
| |
| /** |
| * Checks the <code>Authorization</code> header of the request for Basic |
| * authentication user name and password. If contained, the credentials are |
| * compared to the user name and password set for the OSGi Console. |
| * <p> |
| * If no user name is set, the <code>Authorization</code> header is |
| * ignored and the client is assumed to be authenticated. |
| * |
| * @param request The HTTP request used to get the |
| * <code>Authorization</code> header. |
| * @param response The HTTP response used to send the authentication request |
| * if authentication is required but not satisfied. |
| * @return <code>true</code> if authentication is required and not |
| * satisfied by the request. |
| */ |
| public boolean handleSecurity( HttpServletRequest request, HttpServletResponse response ) |
| { |
| Object provider = tracker.getService(); |
| |
| // check whether the security provider can fully handle the request |
| if ( provider instanceof WebConsoleSecurityProvider2 ) |
| { |
| return ( ( WebConsoleSecurityProvider2 ) provider ).authenticate( request, response ); |
| } |
| |
| // Return immediately if the header is missing |
| String authHeader = request.getHeader( HEADER_AUTHORIZATION ); |
| if ( authHeader != null && authHeader.length() > 0 ) |
| { |
| |
| // Get the authType (Basic, Digest) and authInfo (user/password) |
| // from |
| // the header |
| authHeader = authHeader.trim(); |
| int blank = authHeader.indexOf( ' ' ); |
| if ( blank > 0 ) |
| { |
| String authType = authHeader.substring( 0, blank ); |
| String authInfo = authHeader.substring( blank ).trim(); |
| |
| // Check whether authorization type matches |
| if ( authType.equalsIgnoreCase( AUTHENTICATION_SCHEME_BASIC ) ) |
| { |
| try |
| { |
| String srcString = base64Decode( authInfo ); |
| int i = srcString.indexOf( ':' ); |
| String username = srcString.substring( 0, i ); |
| String password = srcString.substring( i + 1 ); |
| |
| // authenticate |
| if ( authenticate( provider, username, password ) ) |
| { |
| // as per the spec, set attributes |
| request.setAttribute( HttpContext.AUTHENTICATION_TYPE, HttpServletRequest.BASIC_AUTH ); |
| request.setAttribute( HttpContext.REMOTE_USER, username ); |
| |
| // set web console user attribute |
| request.setAttribute( WebConsoleSecurityProvider2.USER_ATTRIBUTE, username ); |
| |
| // succeed |
| return true; |
| } |
| } |
| catch ( Exception e ) |
| { |
| // Ignore |
| } |
| } |
| } |
| } |
| |
| // request authentication |
| try |
| { |
| response.setHeader( HEADER_WWW_AUTHENTICATE, AUTHENTICATION_SCHEME_BASIC + " realm=\"" + this.realm + "\"" ); |
| response.setStatus( HttpServletResponse.SC_UNAUTHORIZED ); |
| response.setContentLength( 0 ); |
| response.flushBuffer(); |
| } |
| catch ( IOException ioe ) |
| { |
| // failed sending the response ... cannot do anything about it |
| } |
| |
| // inform HttpService that authentication failed |
| return false; |
| } |
| |
| |
| public boolean authorize( final HttpServletRequest request, String role ) |
| { |
| Object user = request.getAttribute( WebConsoleSecurityProvider2.USER_ATTRIBUTE ); |
| if ( user != null ) |
| { |
| WebConsoleSecurityProvider provider = ( WebConsoleSecurityProvider ) tracker.getService(); |
| if ( provider != null ) |
| { |
| return provider.authorize( user, role ); |
| } |
| |
| // no provider, grant access (backwards compatibility) |
| return true; |
| } |
| |
| // missing user in the request, deny access |
| return false; |
| } |
| |
| |
| private static String base64Decode( String srcString ) |
| { |
| byte[] transformed = Base64.decodeBase64( srcString ); |
| try |
| { |
| return new String( transformed, "ISO-8859-1" ); |
| } |
| catch ( UnsupportedEncodingException uee ) |
| { |
| return new String( transformed ); |
| } |
| } |
| |
| |
| private boolean authenticate( Object provider, String username, String password ) |
| { |
| if ( provider != null ) |
| { |
| return ( ( WebConsoleSecurityProvider ) provider ).authenticate( username, password ) != null; |
| } |
| if ( this.username.equals( username ) && this.password.equals( password ) ) |
| { |
| return true; |
| } |
| return false; |
| } |
| |
| } |