Make the magic "Become" mode for development a normal LoginType

This simplifies cases in the client code, making the magic become
mode behave like other types of login routines.

Signed-off-by: Shawn O. Pearce <sop@google.com>

src/main/java/com/google/gerrit/client/Gerrit.java

@@ -351,43 +351,39 @@ public class Gerrit implements EntryPoint {
     if (signedIn) {
       whoAmI();
       addLink(menuRight, C.menuSettings(), Link.SETTINGS);
-      boolean signout = false;
       switch (Common.getGerritConfig().getLoginType()) {
         case HTTP:
           break;
 
         case OPENID:
-        default:
-          signout = true;
+        case DEVELOPMENT_BECOME_ANY_ACCOUNT:
+          menuRight.addItem(C.menuSignOut(), new Command() {
+            public void execute() {
+              doSignOut();
+            }
+          });
           break;
       }
-      if (signout || !GWT.isScript()) {
-        menuRight.addItem(C.menuSignOut(), new Command() {
-          public void execute() {
-            doSignOut();
-          }
-        });
-      }
     } else {
       switch (Common.getGerritConfig().getLoginType()) {
         case HTTP:
           break;
 
         case OPENID:
-        default:
           menuRight.addItem(C.menuSignIn(), new Command() {
             public void execute() {
               doSignIn();
             }
           });
           break;
-      }
-      if (!GWT.isScript()) {
-        menuRight.addItem("Become", new Command() {
-          public void execute() {
-            Window.Location.assign(GWT.getHostPageBaseURL() + "become");
-          }
-        });
+
+        case DEVELOPMENT_BECOME_ANY_ACCOUNT:
+          menuRight.addItem("Become", new Command() {
+            public void execute() {
+              Window.Location.assign(GWT.getHostPageBaseURL() + "become");
+            }
+          });
+          break;
       }
     }
   }

src/main/java/com/google/gerrit/client/data/GerritConfig.java

@@ -15,7 +15,7 @@
 package com.google.gerrit.client.data;
 
 import com.google.gerrit.client.reviewdb.ApprovalCategory;
-import com.google.gerrit.client.reviewdb.SystemConfig;
+import com.google.gerrit.client.reviewdb.LoginType;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -30,7 +30,7 @@ public class GerritConfig implements Cloneable {
   protected boolean useContributorAgreements;
   protected boolean useContactInfo;
   protected boolean allowRegisterNewEmail;
-  protected SystemConfig.LoginType loginType;
+  protected LoginType loginType;
   protected boolean useRepoDownload;
   protected String gitDaemonUrl;
   protected String sshdAddress;
@@ -47,11 +47,11 @@ public class GerritConfig implements Cloneable {
     canonicalUrl = u;
   }
 
-  public SystemConfig.LoginType getLoginType() {
+  public LoginType getLoginType() {
     return loginType;
   }
 
-  public void setLoginType(final SystemConfig.LoginType t) {
+  public void setLoginType(final LoginType t) {
     loginType = t;
   }
 

src/main/java/com/google/gerrit/client/reviewdb/LoginType.java

@@ -0,0 +1,32 @@
+// 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.client.reviewdb;
+
+public enum LoginType {
+  /** Login relies upon the OpenID standard: {@link "http://openid.net/"} */
+  OPENID,
+
+  /**
+   * Login relies upon the container/web server security.
+   * <p>
+   * The container or web server must populate an HTTP header with the some
+   * user token. Gerrit will implicitly trust the value of this header to
+   * supply the unique identity.
+   */
+  HTTP,
+
+  /** Development mode to enable becoming anyone you want. */
+  DEVELOPMENT_BECOME_ANY_ACCOUNT;
+}

src/main/java/com/google/gerrit/client/reviewdb/SystemConfig.java

@@ -42,20 +42,6 @@ public final class SystemConfig {
     }
   }
 
-  public static enum LoginType {
-    /** Login relies upon the OpenID standard: {@link "http://openid.net/"} */
-    OPENID,
-
-    /**
-     * Login relies upon the container/web server security.
-     * <p>
-     * The container or web server must populate an HTTP header with the some
-     * user token. Gerrit will implicitly trust the value of this header to
-     * supply the unique identity.
-     */
-    HTTP;
-  }
-
   /** Construct a new, unconfigured instance. */
   public static SystemConfig create() {
     final SystemConfig r = new SystemConfig();

src/main/java/com/google/gerrit/server/config/AuthConfig.java

@@ -14,8 +14,8 @@
 
 package com.google.gerrit.server.config;
 
+import com.google.gerrit.client.reviewdb.LoginType;
 import com.google.gerrit.client.reviewdb.SystemConfig;
-import com.google.gerrit.client.reviewdb.SystemConfig.LoginType;
 import com.google.gwtjsonrpc.server.SignedToken;
 import com.google.gwtjsonrpc.server.XsrfException;
 import com.google.inject.Inject;
@@ -64,6 +64,9 @@ public class AuthConfig {
   }
 
   private static LoginType toType(final Config cfg) {
+    if (isBecomeAnyoneEnabled()) {
+      return LoginType.DEVELOPMENT_BECOME_ANY_ACCOUNT;
+    }
     String type = cfg.getString("auth", null, "type");
     if (type == null) {
       return LoginType.OPENID;
@@ -76,6 +79,15 @@ public class AuthConfig {
     throw new IllegalStateException("Unsupported auth.type: " + type);
   }
 
+  private static boolean isBecomeAnyoneEnabled() {
+    try {
+      String s = "com.google.gerrit.server.http.BecomeAnyAccountLoginServlet";
+      return Boolean.getBoolean(s);
+    } catch (SecurityException se) {
+      return false;
+    }
+  }
+
   /** Type of user authentication used by this Gerrit server. */
   public LoginType getLoginType() {
     return loginType;

src/main/java/com/google/gerrit/server/config/CacheManagerProvider.java

@@ -1,6 +1,6 @@
 package com.google.gerrit.server.config;
 
-import com.google.gerrit.client.reviewdb.SystemConfig.LoginType;
+import com.google.gerrit.client.reviewdb.LoginType;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 

src/main/java/com/google/gerrit/server/http/BecomeAnyAccountLoginServlet.java

@@ -16,6 +16,8 @@ package com.google.gerrit.server.http;
 
 import com.google.gerrit.client.reviewdb.Account;
 import com.google.gerrit.client.reviewdb.ReviewDb;
+import com.google.gerrit.server.config.CanonicalWebUrl;
+import com.google.gerrit.server.config.Nullable;
 import com.google.gwtorm.client.OrmException;
 import com.google.gwtorm.client.SchemaFactory;
 import com.google.inject.Inject;
@@ -34,24 +36,17 @@ import javax.servlet.http.HttpServletResponse;
 @SuppressWarnings("serial")
 @Singleton
 public class BecomeAnyAccountLoginServlet extends HttpServlet {
-  static boolean isAllowed() {
-    try {
-      return Boolean.getBoolean(BecomeAnyAccountLoginServlet.class.getName());
-    } catch (SecurityException se) {
-      return false;
-    }
-  }
-
-  private final boolean allowed;
   private final SchemaFactory<ReviewDb> schema;
   private final Provider<GerritCall> callFactory;
+  private final Provider<String> urlProvider;
 
   @Inject
   BecomeAnyAccountLoginServlet(final Provider<GerritCall> cf,
-      final SchemaFactory<ReviewDb> sf) {
+      final SchemaFactory<ReviewDb> sf,
+      final @CanonicalWebUrl @Nullable Provider<String> up) {
     callFactory = cf;
     schema = sf;
-    allowed = isAllowed();
+    urlProvider = up;
   }
 
   @Override
@@ -63,11 +58,6 @@ public class BecomeAnyAccountLoginServlet extends HttpServlet {
   @Override
   protected void doPost(final HttpServletRequest req,
       final HttpServletResponse rsp) throws IOException {
-    if (!allowed) {
-      rsp.sendError(HttpServletResponse.SC_NOT_FOUND);
-      return;
-    }
-
     final List<Account> accounts;
     if (req.getParameter("ssh_user_name") != null) {
       accounts = bySshUserName(rsp, req.getParameter("ssh_user_name"));
@@ -97,11 +87,10 @@ public class BecomeAnyAccountLoginServlet extends HttpServlet {
 
     if (accounts.size() == 1) {
       final Account account = accounts.get(0);
-      callFactory.get().setAccount(account.getId(), false);
-
-      final StringBuffer url = req.getRequestURL();
-      url.setLength(url.lastIndexOf("/")); // drop 'become'
-      rsp.sendRedirect(url.toString());
+      final GerritCall call = callFactory.get();
+      call.noCache();
+      call.setAccount(account.getId(), false);
+      rsp.sendRedirect(urlProvider.get());
 
     } else {
       rsp.sendError(HttpServletResponse.SC_NOT_FOUND);

src/main/java/com/google/gerrit/server/http/GerritServletConfig.java

@@ -17,7 +17,6 @@ package com.google.gerrit.server.http;
 import static com.google.inject.Stage.PRODUCTION;
 
 import com.google.gerrit.client.reviewdb.Account;
-import com.google.gerrit.client.reviewdb.SystemConfig.LoginType;
 import com.google.gerrit.client.rpc.Common;
 import com.google.gerrit.client.rpc.Common.CurrentAccountImpl;
 import com.google.gerrit.git.PushAllProjectsOp;
@@ -123,15 +122,19 @@ public class GerritServletConfig extends GuiceServletContextListener {
     final List<Module> modules = new ArrayList<Module>();
     modules.add(new WebModule(sshInfo));
 
-    if (BecomeAnyAccountLoginServlet.isAllowed()) {
-      modules.add(new ServletModule() {
-        @Override
-        protected void configureServlets() {
-          serve("/become").with(BecomeAnyAccountLoginServlet.class);
-        }
-      });
-    } else if (auth.getLoginType() == LoginType.OPENID) {
-      modules.add(new OpenIdModule());
+    switch (auth.getLoginType()) {
+      case OPENID:
+        modules.add(new OpenIdModule());
+        break;
+
+      case DEVELOPMENT_BECOME_ANY_ACCOUNT:
+        modules.add(new ServletModule() {
+          @Override
+          protected void configureServlets() {
+            serve("/become").with(BecomeAnyAccountLoginServlet.class);
+          }
+        });
+        break;
     }
 
     return sysInjector.createChildInjector(modules);