FileSystemPermissionTest Eclair Backport
Bug 2749525
Change-Id: Ia4cd3d0b4e20e17789cbb0ee3f37c28c2ff4ad27
diff --git a/tests/tests/permission/src/android/permission/cts/FileSystemPermissionTest.java b/tests/tests/permission/src/android/permission/cts/FileSystemPermissionTest.java
new file mode 100644
index 0000000..3dfcad4
--- /dev/null
+++ b/tests/tests/permission/src/android/permission/cts/FileSystemPermissionTest.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2010 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 android.permission.cts;
+
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.os.Environment;
+import android.test.AndroidTestCase;
+import android.test.suitebuilder.annotation.MediumTest;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.List;
+
+/**
+ * Verify certain permissions on the filesystem
+ */
+@MediumTest
+public class FileSystemPermissionTest extends AndroidTestCase {
+
+ public void testCreateFileHasSanePermissions() throws Exception {
+ File myFile = new File(getContext().getFilesDir(), "hello");
+ FileOutputStream stream = new FileOutputStream(myFile);
+ stream.write("hello world".getBytes());
+ stream.close();
+ try {
+ FileUtils.FileStatus status = new FileUtils.FileStatus();
+ FileUtils.getFileStatus(myFile.getAbsolutePath(), status, false);
+ int expectedPerms = FileUtils.S_IFREG
+ | FileUtils.S_IWUSR
+ | FileUtils.S_IRUSR;
+ assertEquals(
+ "Newly created files should have 0600 permissions",
+ Integer.toOctalString(expectedPerms),
+ Integer.toOctalString(status.mode));
+ } finally {
+ assertTrue(myFile.delete());
+ }
+ }
+
+ public void testCreateDirectoryHasSanePermissions() throws Exception {
+ File myDir = new File(getContext().getFilesDir(), "helloDirectory");
+ assertTrue(myDir.mkdir());
+ try {
+ FileUtils.FileStatus status = new FileUtils.FileStatus();
+ FileUtils.getFileStatus(myDir.getAbsolutePath(), status, false);
+ int expectedPerms = FileUtils.S_IFDIR
+ | FileUtils.S_IWUSR
+ | FileUtils.S_IRUSR
+ | FileUtils.S_IXUSR;
+ assertEquals(
+ "Newly created directories should have 0700 permissions",
+ Integer.toOctalString(expectedPerms),
+ Integer.toOctalString(status.mode));
+
+ } finally {
+ assertTrue(myDir.delete());
+ }
+ }
+
+ public void testOtherApplicationDirectoriesAreNotWritable() throws Exception {
+ List<ApplicationInfo> apps = getContext()
+ .getPackageManager()
+ .getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);
+ String myAppDirectory = getContext().getApplicationInfo().dataDir;
+ for (ApplicationInfo app : apps) {
+ if (!myAppDirectory.equals(app.dataDir)) {
+ assertDirectoryNotWritable(new File(app.dataDir));
+ }
+ }
+ }
+
+ public void testApplicationParentDirectoryNotWritable() throws Exception {
+ String myDataDir = getContext().getApplicationInfo().dataDir;
+ File parentDir = new File(myDataDir).getParentFile();
+ assertDirectoryNotWritable(parentDir);
+ }
+
+ public void testDataDirectoryNotWritable() throws Exception {
+ assertDirectoryNotWritable(Environment.getDataDirectory());
+ }
+
+ public void testAndroidRootDirectoryNotWritable() throws Exception {
+ assertDirectoryNotWritable(Environment.getRootDirectory());
+ }
+
+ public void testDownloadCacheDirectoryNotWritable() throws Exception {
+ assertDirectoryNotWritable(Environment.getDownloadCacheDirectory());
+ }
+
+ public void testRootDirectoryNotWritable() throws Exception {
+ assertDirectoryNotWritable(new File("/"));
+ }
+
+ public void testDevDirectoryNotWritable() throws Exception {
+ assertDirectoryNotWritable(new File("/dev"));
+ }
+
+ public void testProcDirectoryNotWritable() throws Exception {
+ assertDirectoryNotWritable(new File("/proc"));
+ }
+
+ private static void assertDirectoryNotWritable(File directory) throws Exception {
+ File toCreate = new File(directory, "hello");
+ try {
+ toCreate.createNewFile();
+ fail("Expected \"java.io.IOException: Permission denied\""
+ + " when trying to create " + toCreate.getAbsolutePath());
+ } catch (IOException e) {
+ // It's expected we'll get a "Permission denied" exception.
+ } finally {
+ toCreate.delete();
+ }
+ }
+}
