/*
* Copyright (C) 2014 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.server;
import android.content.Context;
import android.content.ContextWrapper;
import android.content.pm.UserInfo;
import android.database.sqlite.SQLiteDatabase;
import android.os.FileUtils;
import android.os.UserManager;
import android.test.AndroidTestCase;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CountDownLatch;
public class LockSettingsStorageTests extends AndroidTestCase {
LockSettingsStorage mStorage;
File mStorageDir;
private File mDb;
@Override
protected void setUp() throws Exception {
super.setUp();
mStorageDir = new File(getContext().getFilesDir(), "locksettings");
mDb = getContext().getDatabasePath("locksettings.db");
assertTrue(mStorageDir.exists() || mStorageDir.mkdirs());
assertTrue(FileUtils.deleteContents(mStorageDir));
assertTrue(!mDb.exists() || mDb.delete());
final Context ctx = getContext();
setContext(new ContextWrapper(ctx) {
@Override
public Object getSystemService(String name) {
if (USER_SERVICE.equals(name)) {
return new UserManager(ctx, null) {
@Override
public UserInfo getProfileParent(int userHandle) {
if (userHandle == 2) {
// User 2 is a profile of user 1.
return new UserInfo(1, "name", 0);
}
if (userHandle == 3) {
// User 3 is a profile of user 0.
return new UserInfo(0, "name", 0);
}
return null;
}
};
}
return super.getSystemService(name);
}
});
mStorage = new LockSettingsStorage(getContext(), new LockSettingsStorage.Callback() {
@Override
public void initialize(SQLiteDatabase db) {
mStorage.writeKeyValue(db, "initializedKey", "initialValue", 0);
}
}) {
@Override
String getLockPatternFilename(int userId) {
return new File(mStorageDir,
super.getLockPatternFilename(userId).replace('/', '-')).getAbsolutePath();
}
@Override
String getLockPasswordFilename(int userId) {
return new File(mStorageDir,
super.getLockPasswordFilename(userId).replace('/', '-')).getAbsolutePath();
}
};
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
mStorage.closeDatabase();
}
public void testKeyValue_InitializeWorked() {
assertEquals("initialValue", mStorage.readKeyValue("initializedKey", "default", 0));
mStorage.clearCache();
assertEquals("initialValue", mStorage.readKeyValue("initializedKey", "default", 0));
}
public void testKeyValue_WriteThenRead() {
mStorage.writeKeyValue("key", "value", 0);
assertEquals("value", mStorage.readKeyValue("key", "default", 0));
mStorage.clearCache();
assertEquals("value", mStorage.readKeyValue("key", "default", 0));
}
public void testKeyValue_DefaultValue() {
assertEquals("default", mStorage.readKeyValue("unititialized key", "default", 0));
assertEquals("default2", mStorage.readKeyValue("unititialized key", "default2", 0));
}
public void testKeyValue_Concurrency() {
final Object monitor = new Object();
List<Thread> threads = new ArrayList<>();
for (int i = 0; i < 100; i++) {
final int threadId = i;
threads.add(new Thread() {
@Override
public void run() {
synchronized (monitor) {
try {
monitor.wait();
} catch (InterruptedException e) {
return;
}
mStorage.writeKeyValue("key", "1 from thread " + threadId, 0);
mStorage.readKeyValue("key", "default", 0);
mStorage.writeKeyValue("key", "2 from thread " + threadId, 0);
mStorage.readKeyValue("key", "default", 0);
mStorage.writeKeyValue("key", "3 from thread " + threadId, 0);
mStorage.readKeyValue("key", "default", 0);
mStorage.writeKeyValue("key", "4 from thread " + threadId, 0);
mStorage.readKeyValue("key", "default", 0);
mStorage.writeKeyValue("key", "5 from thread " + threadId, 0);
mStorage.readKeyValue("key", "default", 0);
}
}
});
threads.get(i).start();
}
mStorage.writeKeyValue("key", "initalValue", 0);
synchronized (monitor) {
monitor.notifyAll();
}
for (int i = 0; i < threads.size(); i++) {
try {
threads.get(i).join();
} catch (InterruptedException e) {
}
}
assertEquals('5', mStorage.readKeyValue("key", "default", 0).charAt(0));
mStorage.clearCache();
assertEquals('5', mStorage.readKeyValue("key", "default", 0).charAt(0));
}
public void testKeyValue_CacheStarvedWriter() {
final CountDownLatch latch = new CountDownLatch(1);
List<Thread> threads = new ArrayList<>();
for (int i = 0; i < 100; i++) {
final int threadId = i;
threads.add(new Thread() {
@Override
public void run() {
try {
latch.await();
} catch (InterruptedException e) {
return;
}
if (threadId == 50) {
mStorage.writeKeyValue("starvedWriterKey", "value", 0);
} else {
mStorage.readKeyValue("starvedWriterKey", "default", 0);
}
}
});
threads.get(i).start();
}
latch.countDown();
for (int i = 0; i < threads.size(); i++) {
try {
threads.get(i).join();
} catch (InterruptedException e) {
}
}
String cached = mStorage.readKeyValue("key", "default", 0);
mStorage.clearCache();
String storage = mStorage.readKeyValue("key", "default", 0);
assertEquals("Cached value didn't match stored value", storage, cached);
}
public void testRemoveUser() {
mStorage.writeKeyValue("key", "value", 0);
mStorage.writePasswordHash(new byte[]{1}, 0);
mStorage.writePatternHash(new byte[]{2}, 0);
mStorage.writeKeyValue("key", "value", 1);
mStorage.writePasswordHash(new byte[]{1}, 1);
mStorage.writePatternHash(new byte[]{2}, 1);
mStorage.removeUser(0);
assertEquals("value", mStorage.readKeyValue("key", "default", 1));
assertEquals("default", mStorage.readKeyValue("key", "default", 0));
assertNotNull(mStorage.readPasswordHash(1));
assertNull(mStorage.readPasswordHash(0));
assertNotNull(mStorage.readPatternHash(1));
assertNull(mStorage.readPatternHash(0));
}
public void testPassword_Default() {
assertNull(mStorage.readPasswordHash(0));
}
public void testPassword_Write() {
mStorage.writePasswordHash("thepassword".getBytes(), 0);
assertArrayEquals("thepassword".getBytes(), mStorage.readPasswordHash(0));
mStorage.clearCache();
assertArrayEquals("thepassword".getBytes(), mStorage.readPasswordHash(0));
}
public void testPassword_WriteProfileWritesParent() {
mStorage.writePasswordHash("parentpasswordd".getBytes(), 1);
mStorage.writePasswordHash("profilepassword".getBytes(), 2);
assertArrayEquals("profilepassword".getBytes(), mStorage.readPasswordHash(1));
assertArrayEquals("profilepassword".getBytes(), mStorage.readPasswordHash(2));
mStorage.clearCache();
assertArrayEquals("profilepassword".getBytes(), mStorage.readPasswordHash(1));
assertArrayEquals("profilepassword".getBytes(), mStorage.readPasswordHash(2));
}
public void testPassword_WriteParentWritesProfile() {
mStorage.writePasswordHash("profilepassword".getBytes(), 2);
mStorage.writePasswordHash("parentpasswordd".getBytes(), 1);
assertArrayEquals("parentpasswordd".getBytes(), mStorage.readPasswordHash(1));
assertArrayEquals("parentpasswordd".getBytes(), mStorage.readPasswordHash(2));
mStorage.clearCache();
assertArrayEquals("parentpasswordd".getBytes(), mStorage.readPasswordHash(1));
assertArrayEquals("parentpasswordd".getBytes(), mStorage.readPasswordHash(2));
}
public void testPattern_Default() {
assertNull(mStorage.readPasswordHash(0));
}
public void testPattern_Write() {
mStorage.writePatternHash("thepattern".getBytes(), 0);
assertArrayEquals("thepattern".getBytes(), mStorage.readPatternHash(0));
mStorage.clearCache();
assertArrayEquals("thepattern".getBytes(), mStorage.readPatternHash(0));
}
public void testPattern_WriteProfileWritesParent() {
mStorage.writePatternHash("parentpatternn".getBytes(), 1);
mStorage.writePatternHash("profilepattern".getBytes(), 2);
assertArrayEquals("profilepattern".getBytes(), mStorage.readPatternHash(1));
assertArrayEquals("profilepattern".getBytes(), mStorage.readPatternHash(2));
mStorage.clearCache();
assertArrayEquals("profilepattern".getBytes(), mStorage.readPatternHash(1));
assertArrayEquals("profilepattern".getBytes(), mStorage.readPatternHash(2));
}
public void testPattern_WriteParentWritesProfile() {
mStorage.writePatternHash("profilepattern".getBytes(), 2);
mStorage.writePatternHash("parentpatternn".getBytes(), 1);
assertArrayEquals("parentpatternn".getBytes(), mStorage.readPatternHash(1));
assertArrayEquals("parentpatternn".getBytes(), mStorage.readPatternHash(2));
mStorage.clearCache();
assertArrayEquals("parentpatternn".getBytes(), mStorage.readPatternHash(1));
assertArrayEquals("parentpatternn".getBytes(), mStorage.readPatternHash(2));
}
public void testPrefetch() {
mStorage.writeKeyValue("key", "toBeFetched", 0);
mStorage.writePatternHash("pattern".getBytes(), 0);
mStorage.writePasswordHash("password".getBytes(), 0);
mStorage.clearCache();
mStorage.prefetchUser(0);
assertEquals("toBeFetched", mStorage.readKeyValue("key", "default", 0));
assertArrayEquals("pattern".getBytes(), mStorage.readPatternHash(0));
assertArrayEquals("password".getBytes(), mStorage.readPasswordHash(0));
}
public void testFileLocation_Owner() {
LockSettingsStorage storage = new LockSettingsStorage(getContext(), null);
assertEquals("/data/system/gesture.key", storage.getLockPatternFilename(0));
assertEquals("/data/system/password.key", storage.getLockPasswordFilename(0));
}
public void testFileLocation_SecondaryUser() {
LockSettingsStorage storage = new LockSettingsStorage(getContext(), null);
assertEquals("/data/system/users/1/gesture.key", storage.getLockPatternFilename(1));
assertEquals("/data/system/users/1/password.key", storage.getLockPasswordFilename(1));
}
public void testFileLocation_ProfileToSecondary() {
LockSettingsStorage storage = new LockSettingsStorage(getContext(), null);
assertEquals("/data/system/users/1/gesture.key", storage.getLockPatternFilename(2));
assertEquals("/data/system/users/1/password.key", storage.getLockPasswordFilename(2));
}
public void testFileLocation_ProfileToOwner() {
LockSettingsStorage storage = new LockSettingsStorage(getContext(), null);
assertEquals("/data/system/gesture.key", storage.getLockPatternFilename(3));
assertEquals("/data/system/password.key", storage.getLockPasswordFilename(3));
}
private static void assertArrayEquals(byte[] expected, byte[] actual) {
if (!Arrays.equals(expected, actual)) {
fail("expected:<" + Arrays.toString(expected) +
"> but was:<" + Arrays.toString(actual) + ">");
}
}
}
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