Activity for messaging installed CA certs, and icon in Settings.

Add the MonitoringCertInfoActivity, used by Settings, QuickSettings
and notification to explain about CA certs enabling network traffic
monitoring.
Add a button on the Security item in Settings when a cert is installed.

Bug: 10633199

Change-Id: Ic753fe22b66c30d837a9ba471a0632a07bb7471f

src/com/android/settings/MonitoringCertInfoActivity.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2013 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.android.settings;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.admin.DevicePolicyManager;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.RemoteException;
+import android.view.WindowManager;
+import android.view.WindowManagerGlobal;
+
+/**
+ * Activity that shows a dialog explaining that a CA cert is allowing someone to monitor network
+ * traffic.
+ */
+public class MonitoringCertInfoActivity extends Activity implements OnClickListener {
+
+    private boolean hasDeviceOwner = false;
+
+    @Override
+    protected void onCreate(Bundle savedStates) {
+        super.onCreate(savedStates);
+
+        DevicePolicyManager dpm =
+                (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
+
+        final AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle(R.string.ssl_ca_cert_dialog_title);
+        builder.setCancelable(true);
+        hasDeviceOwner = dpm.getDeviceOwner() != null;
+        int buttonLabel;
+        if (hasDeviceOwner) {
+            // Institutional case.  Show informational message.
+            String message = this.getResources().getString(R.string.ssl_ca_cert_info_message,
+                    dpm.getDeviceOwnerName());
+            builder.setMessage(message);
+            buttonLabel = R.string.done_button;
+        } else {
+            // Consumer case.  Show scary warning.
+            builder.setIcon(android.R.drawable.stat_notify_error);
+            builder.setMessage(R.string.ssl_ca_cert_warning_message);
+            buttonLabel = R.string.ssl_ca_cert_settings_button;
+        }
+
+        builder.setPositiveButton(buttonLabel, this);
+
+        final Dialog dialog = builder.create();
+        dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
+        try {
+            WindowManagerGlobal.getWindowManagerService().dismissKeyguard();
+        } catch (RemoteException e) {
+        }
+        dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
+            @Override public void onCancel(DialogInterface dialog) {
+                finish();
+            }
+        });
+
+        dialog.show();
+    }
+
+    @Override
+    public void onClick(DialogInterface dialog, int which) {
+        if (hasDeviceOwner) {
+            finish();
+        } else {
+            Intent intent =
+                    new Intent(android.provider.Settings.ACTION_TRUSTED_CREDENTIALS_USER);
+            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
+            startActivity(intent);
+            finish();
+        }
+    }
+}