| // Copyright 2012 Google Inc. 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 com.google.enterprise.adaptor.sharepoint; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.base.Strings; |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| |
| /** |
| * Helper class to handle forms authentication. |
| */ |
| class FormsAuthenticationHandler { |
| /** SharePoint's namespace. */ |
| private static final String XMLNS |
| = "http://schemas.microsoft.com/sharepoint/soap/"; |
| |
| private static final Logger log |
| = Logger.getLogger(FormsAuthenticationHandler.class.getName()); |
| // Default time out for forms authentication with .NET is 30 mins |
| private static final long DEFAULT_COOKIE_TIMEOUT_SECONDS = 30 * 60; |
| |
| private final String userName; |
| private final String password; |
| private final ScheduledExecutorService executor; |
| private final Runnable refreshRunnable = new RefreshRunnable(); |
| private final List<String> authenticationCookiesList |
| = new CopyOnWriteArrayList<String>(); |
| private final AuthenticationHandler authenticationClient; |
| private boolean isFormsAuthentication = false; |
| |
| @VisibleForTesting |
| FormsAuthenticationHandler(String userName, String password, |
| ScheduledExecutorService executor, |
| AuthenticationHandler authenticationClient) { |
| if (userName == null || password == null || executor == null || |
| authenticationClient == null) { |
| throw new NullPointerException(); |
| } |
| this.userName = userName; |
| this.password = password; |
| this.executor = executor; |
| this.authenticationClient = authenticationClient; |
| } |
| |
| public List<String> getAuthenticationCookies() { |
| return Collections.unmodifiableList(authenticationCookiesList); |
| } |
| |
| public boolean isFormsAuthentication() { |
| return isFormsAuthentication; |
| } |
| |
| private void refreshCookies() throws IOException { |
| |
| if ("".equals(userName) || "".equals(password)) { |
| log.log(Level.FINE, |
| "Empty username / password. Using authentication mode as Windows"); |
| isFormsAuthentication = false; |
| return; |
| } |
| |
| if (!isFormsAuthentication) { |
| return; |
| } |
| |
| log.log(Level.FINE, "About to refresh authentication cookie."); |
| AuthenticationResult result = authenticationClient.authenticate(); |
| log.log(Level.FINE, "Authentication Result {0}", result.getErrorCode()); |
| |
| String cookie = result.getCookie(); |
| if (Strings.isNullOrEmpty(cookie)) { |
| log.log(Level.INFO, "Authentication cookie is null or empty." |
| + " Adaptor will use Windows authentication."); |
| return; |
| } |
| if (authenticationCookiesList.isEmpty()) { |
| authenticationCookiesList.add(cookie); |
| } else { |
| authenticationCookiesList.set(0, cookie); |
| } |
| long cookieTimeOut = result.getCookieTimeOut(); |
| |
| long rerunAfter = (cookieTimeOut + 1) / 2; |
| executor.schedule(refreshRunnable, rerunAfter, TimeUnit.SECONDS); |
| log.log(Level.FINEST, |
| "Authentication Cookie is {0}", authenticationCookiesList); |
| } |
| |
| public void start() throws IOException { |
| if ("".equals(userName) || "".equals(password)) { |
| log.log(Level.FINE, "Empty username or password. Using windows" |
| + " integrated authentication."); |
| isFormsAuthentication = false; |
| return; |
| } |
| isFormsAuthentication = authenticationClient.isFormsAuthentication(); |
| refreshCookies(); |
| } |
| |
| private class RefreshRunnable implements Runnable { |
| @Override |
| public void run() { |
| try { |
| refreshCookies(); |
| } catch(IOException ex) { |
| log.log(Level.WARNING, |
| "Error refreshing forms authentication cookies", ex); |
| executor.schedule(this, 5, TimeUnit.MINUTES); |
| } |
| } |
| } |
| |
| interface AuthenticationHandler { |
| AuthenticationResult authenticate() throws IOException; |
| boolean isFormsAuthentication() throws IOException; |
| } |
| } |