Force loading of safe labels in PackageInstaller.

It's too easy for code to accidentally use loadLabel() when building
strings for security sensitive contexts, so add ability for a process
to always force loading of safe strings.

Test: builds, boots
Bug: 73657770
Change-Id: I0964f39dbaee4f09c2568036060b66196f1dd782

1 files changed, 28 insertions, 0 deletions

diff --git a/src/com/android/packageinstaller/PackageInstallerApplication.java b/src/com/android/packageinstaller/PackageInstallerApplication.java
new file mode 100644
index 00000000..9b7e64e8
--- /dev/null
+++ b/src/com/android/packageinstaller/PackageInstallerApplication.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2018 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.packageinstaller;
+
+import android.app.Application;
+import android.content.pm.PackageItemInfo;
+
+public class PackageInstallerApplication extends Application {
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        PackageItemInfo.setForceSafeLabels(true);
+    }
+}