115 lines
4.1 KiB
Java
115 lines
4.1 KiB
Java
/*
|
|
* Copyright (C) 2012 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.wm;
|
|
|
|
import android.app.ActivityManagerNative;
|
|
import android.app.admin.DevicePolicyManager;
|
|
import android.content.Context;
|
|
import android.os.Handler;
|
|
import android.os.IBinder;
|
|
import android.os.Message;
|
|
import android.os.RemoteException;
|
|
import android.os.TokenWatcher;
|
|
import android.util.Log;
|
|
import android.util.Pair;
|
|
import android.view.WindowManagerPolicy;
|
|
|
|
public class KeyguardDisableHandler extends Handler {
|
|
private static final String TAG = "KeyguardDisableHandler";
|
|
|
|
private static final int ALLOW_DISABLE_YES = 1;
|
|
private static final int ALLOW_DISABLE_NO = 0;
|
|
private static final int ALLOW_DISABLE_UNKNOWN = -1; // check with DevicePolicyManager
|
|
private int mAllowDisableKeyguard = ALLOW_DISABLE_UNKNOWN; // sync'd by mKeyguardTokenWatcher
|
|
|
|
// Message.what constants
|
|
static final int KEYGUARD_DISABLE = 1;
|
|
static final int KEYGUARD_REENABLE = 2;
|
|
static final int KEYGUARD_POLICY_CHANGED = 3;
|
|
|
|
final Context mContext;
|
|
final WindowManagerPolicy mPolicy;
|
|
KeyguardTokenWatcher mKeyguardTokenWatcher;
|
|
|
|
public KeyguardDisableHandler(final Context context, final WindowManagerPolicy policy) {
|
|
mContext = context;
|
|
mPolicy = policy;
|
|
}
|
|
|
|
@SuppressWarnings("unchecked")
|
|
@Override
|
|
public void handleMessage(Message msg) {
|
|
if (mKeyguardTokenWatcher == null) {
|
|
mKeyguardTokenWatcher = new KeyguardTokenWatcher(this);
|
|
}
|
|
|
|
switch (msg.what) {
|
|
case KEYGUARD_DISABLE:
|
|
final Pair<IBinder, String> pair = (Pair<IBinder, String>)msg.obj;
|
|
mKeyguardTokenWatcher.acquire(pair.first, pair.second);
|
|
break;
|
|
|
|
case KEYGUARD_REENABLE:
|
|
mKeyguardTokenWatcher.release((IBinder)msg.obj);
|
|
break;
|
|
|
|
case KEYGUARD_POLICY_CHANGED:
|
|
mPolicy.enableKeyguard(true);
|
|
// lazily evaluate this next time we're asked to disable keyguard
|
|
mAllowDisableKeyguard = ALLOW_DISABLE_UNKNOWN;
|
|
break;
|
|
}
|
|
}
|
|
|
|
class KeyguardTokenWatcher extends TokenWatcher {
|
|
|
|
public KeyguardTokenWatcher(final Handler handler) {
|
|
super(handler, TAG);
|
|
}
|
|
|
|
@Override
|
|
public void acquired() {
|
|
// We fail safe and prevent disabling keyguard in the unlikely event this gets
|
|
// called before DevicePolicyManagerService has started.
|
|
if (mAllowDisableKeyguard == ALLOW_DISABLE_UNKNOWN) {
|
|
DevicePolicyManager dpm = (DevicePolicyManager) mContext.getSystemService(
|
|
Context.DEVICE_POLICY_SERVICE);
|
|
if (dpm != null) {
|
|
try {
|
|
mAllowDisableKeyguard = dpm.getPasswordQuality(null,
|
|
ActivityManagerNative.getDefault().getCurrentUser().id)
|
|
== DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED ?
|
|
ALLOW_DISABLE_YES : ALLOW_DISABLE_NO;
|
|
} catch (RemoteException re) {
|
|
// Nothing much we can do
|
|
}
|
|
}
|
|
}
|
|
if (mAllowDisableKeyguard == ALLOW_DISABLE_YES) {
|
|
mPolicy.enableKeyguard(false);
|
|
} else {
|
|
Log.v(TAG, "Not disabling keyguard since device policy is enforced");
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void released() {
|
|
mPolicy.enableKeyguard(true);
|
|
}
|
|
}
|
|
}
|