1 files changed, 88 insertions, 0 deletions
diff --git a/java/com/google/gerrit/httpd/HttpLogoutServlet.java b/java/com/google/gerrit/httpd/HttpLogoutServlet.java
new file mode 100644
index 0000000000..1eaaba314d
--- /dev/null
+++ b/java/com/google/gerrit/httpd/HttpLogoutServlet.java
@@ -0,0 +1,88 @@
+// Copyright (C) 2009 The Android Open Source Project
+//
+// 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.gerrit.httpd;
+
+import com.google.common.base.Strings;
+import com.google.gerrit.common.Nullable;
+import com.google.gerrit.extensions.registration.DynamicItem;
+import com.google.gerrit.server.AuditEvent;
+import com.google.gerrit.server.CurrentUser;
+import com.google.gerrit.server.config.AuthConfig;
+import com.google.gerrit.server.config.CanonicalWebUrl;
+import com.google.gerrit.server.group.GroupAuditService;
+import com.google.gerrit.server.util.time.TimeUtil;
+import com.google.inject.Inject;
+import com.google.inject.Provider;
+import com.google.inject.Singleton;
+import java.io.IOException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+@Singleton
+public class HttpLogoutServlet extends HttpServlet {
+  private static final long serialVersionUID = 1L;
+
+  private final DynamicItem<WebSession> webSession;
+  private final Provider<String> urlProvider;
+  private final String logoutUrl;
+  private final GroupAuditService audit;
+
+  @Inject
+  protected HttpLogoutServlet(
+      AuthConfig authConfig,
+      DynamicItem<WebSession> webSession,
+      @CanonicalWebUrl @Nullable Provider<String> urlProvider,
+      GroupAuditService audit) {
+    this.webSession = webSession;
+    this.urlProvider = urlProvider;
+    this.logoutUrl = authConfig.getLogoutURL();
+    this.audit = audit;
+  }
+
+  protected void doLogout(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
+    webSession.get().logout();
+    if (logoutUrl != null) {
+      rsp.sendRedirect(logoutUrl);
+    } else {
+      String url = urlProvider.get();
+      if (Strings.isNullOrEmpty(url)) {
+        url = req.getContextPath();
+      }
+      if (Strings.isNullOrEmpty(url)) {
+        url = "/";
+      }
+      if (!url.endsWith("/")) {
+        url += "/";
+      }
+      rsp.sendRedirect(url);
+    }
+  }
+
+  @Override
+  protected void doGet(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
+
+    final String sid = webSession.get().getSessionId();
+    final CurrentUser currentUser = webSession.get().getUser();
+    final String what = "sign out";
+    final long when = TimeUtil.nowMs();
+
+    try {
+      doLogout(req, rsp);
+    } finally {
+      audit.dispatch(new AuditEvent(sid, currentUser, what, when, null, null));
+    }
+  }
+}