1027 lines
40 KiB
Java
1027 lines
40 KiB
Java
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/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server;
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import com.android.internal.content.PackageMonitor;
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import com.android.internal.os.storage.ExternalStorageFormatter;
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import com.android.internal.util.FastXmlSerializer;
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import com.android.internal.util.JournaledFile;
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import com.android.internal.util.XmlUtils;
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import com.android.internal.widget.LockPatternUtils;
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import org.xmlpull.v1.XmlPullParser;
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import org.xmlpull.v1.XmlPullParserException;
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import org.xmlpull.v1.XmlSerializer;
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import android.app.Activity;
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import android.app.admin.DeviceAdminInfo;
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import android.app.admin.DeviceAdminReceiver;
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import android.app.admin.DevicePolicyManager;
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import android.app.admin.IDevicePolicyManager;
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import android.content.BroadcastReceiver;
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import android.content.ComponentName;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.os.Binder;
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import android.os.IBinder;
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import android.os.IPowerManager;
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import android.os.PowerManager;
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import android.os.RecoverySystem;
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import android.os.RemoteCallback;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.os.SystemClock;
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import android.util.Slog;
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import android.util.PrintWriterPrinter;
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import android.util.Printer;
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import android.util.Xml;
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import android.view.WindowManagerPolicy;
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import java.io.File;
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import java.io.FileDescriptor;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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/**
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* Implementation of the device policy APIs.
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*/
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public class DevicePolicyManagerService extends IDevicePolicyManager.Stub {
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static final String TAG = "DevicePolicyManagerService";
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final Context mContext;
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final MyPackageMonitor mMonitor;
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final PowerManager.WakeLock mWakeLock;
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IPowerManager mIPowerManager;
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int mActivePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
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int mActivePasswordLength = 0;
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int mFailedPasswordAttempts = 0;
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int mPasswordOwner = -1;
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final HashMap<ComponentName, ActiveAdmin> mAdminMap
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= new HashMap<ComponentName, ActiveAdmin>();
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final ArrayList<ActiveAdmin> mAdminList
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= new ArrayList<ActiveAdmin>();
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static class ActiveAdmin {
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final DeviceAdminInfo info;
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int passwordQuality = DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
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int minimumPasswordLength = 0;
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long maximumTimeToUnlock = 0;
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int maximumFailedPasswordsForWipe = 0;
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ActiveAdmin(DeviceAdminInfo _info) {
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info = _info;
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}
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int getUid() { return info.getActivityInfo().applicationInfo.uid; }
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void writeToXml(XmlSerializer out)
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throws IllegalArgumentException, IllegalStateException, IOException {
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out.startTag(null, "policies");
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info.writePoliciesToXml(out);
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out.endTag(null, "policies");
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if (passwordQuality != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) {
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out.startTag(null, "password-quality");
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out.attribute(null, "value", Integer.toString(passwordQuality));
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out.endTag(null, "password-quality");
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if (minimumPasswordLength > 0) {
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out.startTag(null, "min-password-length");
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out.attribute(null, "value", Integer.toString(minimumPasswordLength));
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out.endTag(null, "mn-password-length");
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}
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}
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if (maximumTimeToUnlock != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) {
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out.startTag(null, "max-time-to-unlock");
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out.attribute(null, "value", Long.toString(maximumTimeToUnlock));
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out.endTag(null, "max-time-to-unlock");
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}
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if (maximumFailedPasswordsForWipe != 0) {
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out.startTag(null, "max-failed-password-wipe");
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out.attribute(null, "value", Integer.toString(maximumFailedPasswordsForWipe));
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out.endTag(null, "max-failed-password-wipe");
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}
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}
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void readFromXml(XmlPullParser parser)
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throws XmlPullParserException, IOException {
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int outerDepth = parser.getDepth();
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int type;
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while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
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&& (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
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if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
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continue;
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}
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String tag = parser.getName();
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if ("policies".equals(tag)) {
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info.readPoliciesFromXml(parser);
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} else if ("password-quality".equals(tag)) {
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passwordQuality = Integer.parseInt(
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parser.getAttributeValue(null, "value"));
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} else if ("min-password-length".equals(tag)) {
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minimumPasswordLength = Integer.parseInt(
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parser.getAttributeValue(null, "value"));
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} else if ("max-time-to-unlock".equals(tag)) {
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maximumTimeToUnlock = Long.parseLong(
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parser.getAttributeValue(null, "value"));
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} else if ("max-failed-password-wipe".equals(tag)) {
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maximumFailedPasswordsForWipe = Integer.parseInt(
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parser.getAttributeValue(null, "value"));
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} else {
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Slog.w(TAG, "Unknown admin tag: " + tag);
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}
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XmlUtils.skipCurrentTag(parser);
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}
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}
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void dump(String prefix, PrintWriter pw) {
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pw.print(prefix); pw.print("uid="); pw.println(getUid());
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pw.print(prefix); pw.println("policies:");
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ArrayList<DeviceAdminInfo.PolicyInfo> pols = info.getUsedPolicies();
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if (pols != null) {
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for (int i=0; i<pols.size(); i++) {
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pw.print(prefix); pw.print(" "); pw.println(pols.get(i).tag);
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}
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}
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pw.print(prefix); pw.print("passwordQuality=0x");
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pw.print(Integer.toHexString(passwordQuality));
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pw.print(" minimumPasswordLength=");
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pw.println(minimumPasswordLength);
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pw.print(prefix); pw.print("maximumTimeToUnlock=");
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pw.println(maximumTimeToUnlock);
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pw.print(prefix); pw.print("maximumFailedPasswordsForWipe=");
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pw.println(maximumFailedPasswordsForWipe);
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}
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}
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class MyPackageMonitor extends PackageMonitor {
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public void onSomePackagesChanged() {
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synchronized (DevicePolicyManagerService.this) {
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boolean removed = false;
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for (int i=mAdminList.size()-1; i>=0; i--) {
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ActiveAdmin aa = mAdminList.get(i);
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int change = isPackageDisappearing(aa.info.getPackageName());
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if (change == PACKAGE_PERMANENT_CHANGE
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|| change == PACKAGE_TEMPORARY_CHANGE) {
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Slog.w(TAG, "Admin unexpectedly uninstalled: "
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+ aa.info.getComponent());
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removed = true;
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mAdminList.remove(i);
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} else if (isPackageModified(aa.info.getPackageName())) {
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try {
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mContext.getPackageManager().getReceiverInfo(
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aa.info.getComponent(), 0);
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} catch (NameNotFoundException e) {
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Slog.w(TAG, "Admin package change removed component: "
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+ aa.info.getComponent());
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removed = true;
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mAdminList.remove(i);
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}
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}
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}
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if (removed) {
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validatePasswordOwnerLocked();
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}
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}
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}
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}
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/**
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* Instantiates the service.
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*/
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public DevicePolicyManagerService(Context context) {
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mContext = context;
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mMonitor = new MyPackageMonitor();
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mMonitor.register(context, true);
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mWakeLock = ((PowerManager)context.getSystemService(Context.POWER_SERVICE))
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.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "DPM");
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}
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private IPowerManager getIPowerManager() {
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if (mIPowerManager == null) {
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IBinder b = ServiceManager.getService(Context.POWER_SERVICE);
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mIPowerManager = IPowerManager.Stub.asInterface(b);
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}
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return mIPowerManager;
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}
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ActiveAdmin getActiveAdminUncheckedLocked(ComponentName who) {
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ActiveAdmin admin = mAdminMap.get(who);
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if (admin != null
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&& who.getPackageName().equals(admin.info.getActivityInfo().packageName)
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&& who.getClassName().equals(admin.info.getActivityInfo().name)) {
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return admin;
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}
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return null;
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}
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ActiveAdmin getActiveAdminForCallerLocked(ComponentName who, int reqPolicy)
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throws SecurityException {
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final int callingUid = Binder.getCallingUid();
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if (who != null) {
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ActiveAdmin admin = mAdminMap.get(who);
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if (admin == null) {
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throw new SecurityException("No active admin " + who);
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}
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if (admin.getUid() != callingUid) {
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throw new SecurityException("Admin " + who + " is not owned by uid "
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+ Binder.getCallingUid());
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}
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if (!admin.info.usesPolicy(reqPolicy)) {
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throw new SecurityException("Admin " + admin.info.getComponent()
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+ " did not specify uses-policy for: "
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+ admin.info.getTagForPolicy(reqPolicy));
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}
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return admin;
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} else {
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final int N = mAdminList.size();
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for (int i=0; i<N; i++) {
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ActiveAdmin admin = mAdminList.get(i);
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if (admin.getUid() == callingUid && admin.info.usesPolicy(reqPolicy)) {
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return admin;
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}
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}
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throw new SecurityException("No active admin owned by uid "
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+ Binder.getCallingUid() + " for policy #" + reqPolicy);
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}
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}
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void sendAdminCommandLocked(ActiveAdmin admin, String action) {
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Intent intent = new Intent(action);
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intent.setComponent(admin.info.getComponent());
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mContext.sendBroadcast(intent);
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}
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void sendAdminCommandLocked(String action, int reqPolicy) {
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final int N = mAdminList.size();
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if (N > 0) {
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for (int i=0; i<N; i++) {
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ActiveAdmin admin = mAdminList.get(i);
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if (admin.info.usesPolicy(reqPolicy)) {
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sendAdminCommandLocked(admin, action);
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}
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}
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}
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}
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void removeActiveAdminLocked(ComponentName adminReceiver) {
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ActiveAdmin admin = getActiveAdminUncheckedLocked(adminReceiver);
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if (admin != null) {
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sendAdminCommandLocked(admin,
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DeviceAdminReceiver.ACTION_DEVICE_ADMIN_DISABLED);
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// XXX need to wait for it to complete.
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mAdminList.remove(admin);
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mAdminMap.remove(adminReceiver);
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validatePasswordOwnerLocked();
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}
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}
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public DeviceAdminInfo findAdmin(ComponentName adminName) {
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Intent resolveIntent = new Intent();
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resolveIntent.setComponent(adminName);
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List<ResolveInfo> infos = mContext.getPackageManager().queryBroadcastReceivers(
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resolveIntent, PackageManager.GET_META_DATA);
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if (infos == null || infos.size() <= 0) {
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throw new IllegalArgumentException("Unknown admin: " + adminName);
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}
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try {
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return new DeviceAdminInfo(mContext, infos.get(0));
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} catch (XmlPullParserException e) {
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Slog.w(TAG, "Bad device admin requested: " + adminName, e);
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return null;
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} catch (IOException e) {
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Slog.w(TAG, "Bad device admin requested: " + adminName, e);
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return null;
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}
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}
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private static JournaledFile makeJournaledFile() {
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final String base = "/data/system/device_policies.xml";
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return new JournaledFile(new File(base), new File(base + ".tmp"));
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}
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private void saveSettingsLocked() {
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JournaledFile journal = makeJournaledFile();
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FileOutputStream stream = null;
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try {
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stream = new FileOutputStream(journal.chooseForWrite(), false);
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XmlSerializer out = new FastXmlSerializer();
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out.setOutput(stream, "utf-8");
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out.startDocument(null, true);
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out.startTag(null, "policies");
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final int N = mAdminList.size();
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for (int i=0; i<N; i++) {
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ActiveAdmin ap = mAdminList.get(i);
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if (ap != null) {
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out.startTag(null, "admin");
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out.attribute(null, "name", ap.info.getComponent().flattenToString());
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ap.writeToXml(out);
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out.endTag(null, "admin");
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}
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}
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if (mPasswordOwner >= 0) {
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out.startTag(null, "password-owner");
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out.attribute(null, "value", Integer.toString(mPasswordOwner));
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out.endTag(null, "password-owner");
|
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}
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if (mFailedPasswordAttempts != 0) {
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||
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out.startTag(null, "failed-password-attempts");
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out.attribute(null, "value", Integer.toString(mFailedPasswordAttempts));
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out.endTag(null, "failed-password-attempts");
|
||
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}
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|
|
if (mActivePasswordQuality != 0 || mActivePasswordLength != 0) {
|
||
|
|
out.startTag(null, "active-password");
|
||
|
|
out.attribute(null, "quality", Integer.toString(mActivePasswordQuality));
|
||
|
|
out.attribute(null, "length", Integer.toString(mActivePasswordLength));
|
||
|
|
out.endTag(null, "active-password");
|
||
|
|
}
|
||
|
|
|
||
|
|
out.endTag(null, "policies");
|
||
|
|
|
||
|
|
out.endDocument();
|
||
|
|
stream.close();
|
||
|
|
journal.commit();
|
||
|
|
sendChangedNotification();
|
||
|
|
} catch (IOException e) {
|
||
|
|
try {
|
||
|
|
if (stream != null) {
|
||
|
|
stream.close();
|
||
|
|
}
|
||
|
|
} catch (IOException ex) {
|
||
|
|
// Ignore
|
||
|
|
}
|
||
|
|
journal.rollback();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void sendChangedNotification() {
|
||
|
|
Intent intent = new Intent(DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
|
||
|
|
intent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
|
||
|
|
mContext.sendBroadcast(intent);
|
||
|
|
}
|
||
|
|
|
||
|
|
private void loadSettingsLocked() {
|
||
|
|
JournaledFile journal = makeJournaledFile();
|
||
|
|
FileInputStream stream = null;
|
||
|
|
File file = journal.chooseForRead();
|
||
|
|
try {
|
||
|
|
stream = new FileInputStream(file);
|
||
|
|
XmlPullParser parser = Xml.newPullParser();
|
||
|
|
parser.setInput(stream, null);
|
||
|
|
|
||
|
|
int type;
|
||
|
|
while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
|
||
|
|
&& type != XmlPullParser.START_TAG) {
|
||
|
|
}
|
||
|
|
String tag = parser.getName();
|
||
|
|
if (!"policies".equals(tag)) {
|
||
|
|
throw new XmlPullParserException(
|
||
|
|
"Settings do not start with policies tag: found " + tag);
|
||
|
|
}
|
||
|
|
type = parser.next();
|
||
|
|
int outerDepth = parser.getDepth();
|
||
|
|
while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
|
||
|
|
&& (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) {
|
||
|
|
if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
tag = parser.getName();
|
||
|
|
if ("admin".equals(tag)) {
|
||
|
|
String name = parser.getAttributeValue(null, "name");
|
||
|
|
try {
|
||
|
|
DeviceAdminInfo dai = findAdmin(
|
||
|
|
ComponentName.unflattenFromString(name));
|
||
|
|
if (dai != null) {
|
||
|
|
ActiveAdmin ap = new ActiveAdmin(dai);
|
||
|
|
ap.readFromXml(parser);
|
||
|
|
mAdminMap.put(ap.info.getComponent(), ap);
|
||
|
|
mAdminList.add(ap);
|
||
|
|
}
|
||
|
|
} catch (RuntimeException e) {
|
||
|
|
Slog.w(TAG, "Failed loading admin " + name, e);
|
||
|
|
}
|
||
|
|
} else if ("failed-password-attempts".equals(tag)) {
|
||
|
|
mFailedPasswordAttempts = Integer.parseInt(
|
||
|
|
parser.getAttributeValue(null, "value"));
|
||
|
|
XmlUtils.skipCurrentTag(parser);
|
||
|
|
} else if ("password-owner".equals(tag)) {
|
||
|
|
mPasswordOwner = Integer.parseInt(
|
||
|
|
parser.getAttributeValue(null, "value"));
|
||
|
|
XmlUtils.skipCurrentTag(parser);
|
||
|
|
} else if ("active-password".equals(tag)) {
|
||
|
|
mActivePasswordQuality = Integer.parseInt(
|
||
|
|
parser.getAttributeValue(null, "quality"));
|
||
|
|
mActivePasswordLength = Integer.parseInt(
|
||
|
|
parser.getAttributeValue(null, "length"));
|
||
|
|
XmlUtils.skipCurrentTag(parser);
|
||
|
|
} else {
|
||
|
|
Slog.w(TAG, "Unknown tag: " + tag);
|
||
|
|
XmlUtils.skipCurrentTag(parser);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} catch (NullPointerException e) {
|
||
|
|
Slog.w(TAG, "failed parsing " + file + " " + e);
|
||
|
|
} catch (NumberFormatException e) {
|
||
|
|
Slog.w(TAG, "failed parsing " + file + " " + e);
|
||
|
|
} catch (XmlPullParserException e) {
|
||
|
|
Slog.w(TAG, "failed parsing " + file + " " + e);
|
||
|
|
} catch (FileNotFoundException e) {
|
||
|
|
// Don't be noisy, this is normal if we haven't defined any policies.
|
||
|
|
} catch (IOException e) {
|
||
|
|
Slog.w(TAG, "failed parsing " + file + " " + e);
|
||
|
|
} catch (IndexOutOfBoundsException e) {
|
||
|
|
Slog.w(TAG, "failed parsing " + file + " " + e);
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
if (stream != null) {
|
||
|
|
stream.close();
|
||
|
|
}
|
||
|
|
} catch (IOException e) {
|
||
|
|
// Ignore
|
||
|
|
}
|
||
|
|
|
||
|
|
// Validate that what we stored for the password quality matches
|
||
|
|
// sufficiently what is currently set. Note that this is only
|
||
|
|
// a sanity check in case the two get out of sync; this should
|
||
|
|
// never normally happen.
|
||
|
|
LockPatternUtils utils = new LockPatternUtils(mContext);
|
||
|
|
if (utils.getActivePasswordQuality() < mActivePasswordQuality) {
|
||
|
|
Slog.w(TAG, "Active password quality 0x"
|
||
|
|
+ Integer.toHexString(mActivePasswordQuality)
|
||
|
|
+ " does not match actual quality 0x"
|
||
|
|
+ Integer.toHexString(utils.getActivePasswordQuality()));
|
||
|
|
mActivePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
|
||
|
|
mActivePasswordLength = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
validatePasswordOwnerLocked();
|
||
|
|
|
||
|
|
long timeMs = getMaximumTimeToLock(null);
|
||
|
|
if (timeMs <= 0) {
|
||
|
|
timeMs = Integer.MAX_VALUE;
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
getIPowerManager().setMaximumScreenOffTimeount((int)timeMs);
|
||
|
|
} catch (RemoteException e) {
|
||
|
|
Slog.w(TAG, "Failure talking with power manager", e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void validateQualityConstant(int quality) {
|
||
|
|
switch (quality) {
|
||
|
|
case DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED:
|
||
|
|
case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING:
|
||
|
|
case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC:
|
||
|
|
case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC:
|
||
|
|
case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC:
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
throw new IllegalArgumentException("Invalid quality constant: 0x"
|
||
|
|
+ Integer.toHexString(quality));
|
||
|
|
}
|
||
|
|
|
||
|
|
void validatePasswordOwnerLocked() {
|
||
|
|
if (mPasswordOwner >= 0) {
|
||
|
|
boolean haveOwner = false;
|
||
|
|
for (int i=mAdminList.size()-1; i>=0; i--) {
|
||
|
|
if (mAdminList.get(i).getUid() == mPasswordOwner) {
|
||
|
|
haveOwner = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!haveOwner) {
|
||
|
|
Slog.w(TAG, "Previous password owner " + mPasswordOwner
|
||
|
|
+ " no longer active; disabling");
|
||
|
|
mPasswordOwner = -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void systemReady() {
|
||
|
|
synchronized (this) {
|
||
|
|
loadSettingsLocked();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setActiveAdmin(ComponentName adminReceiver) {
|
||
|
|
mContext.enforceCallingOrSelfPermission(
|
||
|
|
android.Manifest.permission.BIND_DEVICE_ADMIN, null);
|
||
|
|
|
||
|
|
DeviceAdminInfo info = findAdmin(adminReceiver);
|
||
|
|
if (info == null) {
|
||
|
|
throw new IllegalArgumentException("Bad admin: " + adminReceiver);
|
||
|
|
}
|
||
|
|
synchronized (this) {
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
if (getActiveAdminUncheckedLocked(adminReceiver) != null) {
|
||
|
|
throw new IllegalArgumentException("Admin is already added");
|
||
|
|
}
|
||
|
|
ActiveAdmin admin = new ActiveAdmin(info);
|
||
|
|
mAdminMap.put(adminReceiver, admin);
|
||
|
|
mAdminList.add(admin);
|
||
|
|
saveSettingsLocked();
|
||
|
|
sendAdminCommandLocked(admin,
|
||
|
|
DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED);
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public boolean isAdminActive(ComponentName adminReceiver) {
|
||
|
|
synchronized (this) {
|
||
|
|
return getActiveAdminUncheckedLocked(adminReceiver) != null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public List<ComponentName> getActiveAdmins() {
|
||
|
|
synchronized (this) {
|
||
|
|
final int N = mAdminList.size();
|
||
|
|
if (N <= 0) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
ArrayList<ComponentName> res = new ArrayList<ComponentName>(N);
|
||
|
|
for (int i=0; i<N; i++) {
|
||
|
|
res.add(mAdminList.get(i).info.getComponent());
|
||
|
|
}
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public boolean packageHasActiveAdmins(String packageName) {
|
||
|
|
synchronized (this) {
|
||
|
|
final int N = mAdminList.size();
|
||
|
|
for (int i=0; i<N; i++) {
|
||
|
|
if (mAdminList.get(i).info.getPackageName().equals(packageName)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void removeActiveAdmin(ComponentName adminReceiver) {
|
||
|
|
synchronized (this) {
|
||
|
|
ActiveAdmin admin = getActiveAdminUncheckedLocked(adminReceiver);
|
||
|
|
if (admin == null) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (admin.getUid() != Binder.getCallingUid()) {
|
||
|
|
mContext.enforceCallingOrSelfPermission(
|
||
|
|
android.Manifest.permission.BIND_DEVICE_ADMIN, null);
|
||
|
|
}
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
removeActiveAdminLocked(adminReceiver);
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setPasswordQuality(ComponentName who, int quality) {
|
||
|
|
validateQualityConstant(quality);
|
||
|
|
|
||
|
|
synchronized (this) {
|
||
|
|
if (who == null) {
|
||
|
|
throw new NullPointerException("ComponentName is null");
|
||
|
|
}
|
||
|
|
ActiveAdmin ap = getActiveAdminForCallerLocked(who,
|
||
|
|
DeviceAdminInfo.USES_POLICY_LIMIT_PASSWORD);
|
||
|
|
if (ap.passwordQuality != quality) {
|
||
|
|
ap.passwordQuality = quality;
|
||
|
|
saveSettingsLocked();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public int getPasswordQuality(ComponentName who) {
|
||
|
|
synchronized (this) {
|
||
|
|
int mode = DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED;
|
||
|
|
|
||
|
|
if (who != null) {
|
||
|
|
ActiveAdmin admin = getActiveAdminUncheckedLocked(who);
|
||
|
|
return admin != null ? admin.passwordQuality : mode;
|
||
|
|
}
|
||
|
|
|
||
|
|
final int N = mAdminList.size();
|
||
|
|
for (int i=0; i<N; i++) {
|
||
|
|
ActiveAdmin admin = mAdminList.get(i);
|
||
|
|
if (mode < admin.passwordQuality) {
|
||
|
|
mode = admin.passwordQuality;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return mode;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setPasswordMinimumLength(ComponentName who, int length) {
|
||
|
|
synchronized (this) {
|
||
|
|
if (who == null) {
|
||
|
|
throw new NullPointerException("ComponentName is null");
|
||
|
|
}
|
||
|
|
ActiveAdmin ap = getActiveAdminForCallerLocked(who,
|
||
|
|
DeviceAdminInfo.USES_POLICY_LIMIT_PASSWORD);
|
||
|
|
if (ap.minimumPasswordLength != length) {
|
||
|
|
ap.minimumPasswordLength = length;
|
||
|
|
saveSettingsLocked();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public int getPasswordMinimumLength(ComponentName who) {
|
||
|
|
synchronized (this) {
|
||
|
|
int length = 0;
|
||
|
|
|
||
|
|
if (who != null) {
|
||
|
|
ActiveAdmin admin = getActiveAdminUncheckedLocked(who);
|
||
|
|
return admin != null ? admin.minimumPasswordLength : length;
|
||
|
|
}
|
||
|
|
|
||
|
|
final int N = mAdminList.size();
|
||
|
|
for (int i=0; i<N; i++) {
|
||
|
|
ActiveAdmin admin = mAdminList.get(i);
|
||
|
|
if (length < admin.minimumPasswordLength) {
|
||
|
|
length = admin.minimumPasswordLength;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return length;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public boolean isActivePasswordSufficient() {
|
||
|
|
synchronized (this) {
|
||
|
|
// This API can only be called by an active device admin,
|
||
|
|
// so try to retrieve it to check that the caller is one.
|
||
|
|
getActiveAdminForCallerLocked(null,
|
||
|
|
DeviceAdminInfo.USES_POLICY_LIMIT_PASSWORD);
|
||
|
|
return mActivePasswordQuality >= getPasswordQuality(null)
|
||
|
|
&& mActivePasswordLength >= getPasswordMinimumLength(null);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public int getCurrentFailedPasswordAttempts() {
|
||
|
|
synchronized (this) {
|
||
|
|
// This API can only be called by an active device admin,
|
||
|
|
// so try to retrieve it to check that the caller is one.
|
||
|
|
getActiveAdminForCallerLocked(null,
|
||
|
|
DeviceAdminInfo.USES_POLICY_WATCH_LOGIN);
|
||
|
|
return mFailedPasswordAttempts;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setMaximumFailedPasswordsForWipe(ComponentName who, int num) {
|
||
|
|
synchronized (this) {
|
||
|
|
// This API can only be called by an active device admin,
|
||
|
|
// so try to retrieve it to check that the caller is one.
|
||
|
|
getActiveAdminForCallerLocked(who,
|
||
|
|
DeviceAdminInfo.USES_POLICY_WIPE_DATA);
|
||
|
|
ActiveAdmin ap = getActiveAdminForCallerLocked(who,
|
||
|
|
DeviceAdminInfo.USES_POLICY_WATCH_LOGIN);
|
||
|
|
if (ap.maximumFailedPasswordsForWipe != num) {
|
||
|
|
ap.maximumFailedPasswordsForWipe = num;
|
||
|
|
saveSettingsLocked();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public int getMaximumFailedPasswordsForWipe(ComponentName who) {
|
||
|
|
synchronized (this) {
|
||
|
|
int count = 0;
|
||
|
|
|
||
|
|
if (who != null) {
|
||
|
|
ActiveAdmin admin = getActiveAdminUncheckedLocked(who);
|
||
|
|
return admin != null ? admin.maximumFailedPasswordsForWipe : count;
|
||
|
|
}
|
||
|
|
|
||
|
|
final int N = mAdminList.size();
|
||
|
|
for (int i=0; i<N; i++) {
|
||
|
|
ActiveAdmin admin = mAdminList.get(i);
|
||
|
|
if (count == 0) {
|
||
|
|
count = admin.maximumFailedPasswordsForWipe;
|
||
|
|
} else if (admin.maximumFailedPasswordsForWipe != 0
|
||
|
|
&& count > admin.maximumFailedPasswordsForWipe) {
|
||
|
|
count = admin.maximumFailedPasswordsForWipe;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public boolean resetPassword(String password, int flags) {
|
||
|
|
int quality;
|
||
|
|
synchronized (this) {
|
||
|
|
// This API can only be called by an active device admin,
|
||
|
|
// so try to retrieve it to check that the caller is one.
|
||
|
|
getActiveAdminForCallerLocked(null,
|
||
|
|
DeviceAdminInfo.USES_POLICY_RESET_PASSWORD);
|
||
|
|
quality = getPasswordQuality(null);
|
||
|
|
if (quality != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) {
|
||
|
|
int realQuality = LockPatternUtils.computePasswordQuality(password);
|
||
|
|
if (realQuality < quality) {
|
||
|
|
Slog.w(TAG, "resetPassword: password quality 0x"
|
||
|
|
+ Integer.toHexString(quality)
|
||
|
|
+ " does not meet required quality 0x"
|
||
|
|
+ Integer.toHexString(quality));
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
quality = realQuality;
|
||
|
|
}
|
||
|
|
int length = getPasswordMinimumLength(null);
|
||
|
|
if (password.length() < length) {
|
||
|
|
Slog.w(TAG, "resetPassword: password length " + password.length()
|
||
|
|
+ " does not meet required length " + length);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int callingUid = Binder.getCallingUid();
|
||
|
|
if (mPasswordOwner >= 0 && mPasswordOwner != callingUid) {
|
||
|
|
Slog.w(TAG, "resetPassword: already set by another uid and not entered by user");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Don't do this with the lock held, because it is going to call
|
||
|
|
// back in to the service.
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
LockPatternUtils utils = new LockPatternUtils(mContext);
|
||
|
|
utils.saveLockPassword(password, quality);
|
||
|
|
synchronized (this) {
|
||
|
|
int newOwner = (flags&DevicePolicyManager.RESET_PASSWORD_REQUIRE_ENTRY)
|
||
|
|
!= 0 ? callingUid : -1;
|
||
|
|
if (mPasswordOwner != newOwner) {
|
||
|
|
mPasswordOwner = newOwner;
|
||
|
|
saveSettingsLocked();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setMaximumTimeToLock(ComponentName who, long timeMs) {
|
||
|
|
synchronized (this) {
|
||
|
|
if (who == null) {
|
||
|
|
throw new NullPointerException("ComponentName is null");
|
||
|
|
}
|
||
|
|
ActiveAdmin ap = getActiveAdminForCallerLocked(who,
|
||
|
|
DeviceAdminInfo.USES_POLICY_FORCE_LOCK);
|
||
|
|
if (ap.maximumTimeToUnlock != timeMs) {
|
||
|
|
ap.maximumTimeToUnlock = timeMs;
|
||
|
|
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
saveSettingsLocked();
|
||
|
|
|
||
|
|
timeMs = getMaximumTimeToLock(null);
|
||
|
|
if (timeMs <= 0) {
|
||
|
|
timeMs = Integer.MAX_VALUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
getIPowerManager().setMaximumScreenOffTimeount((int)timeMs);
|
||
|
|
} catch (RemoteException e) {
|
||
|
|
Slog.w(TAG, "Failure talking with power manager", e);
|
||
|
|
}
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public long getMaximumTimeToLock(ComponentName who) {
|
||
|
|
synchronized (this) {
|
||
|
|
long time = 0;
|
||
|
|
|
||
|
|
if (who != null) {
|
||
|
|
ActiveAdmin admin = getActiveAdminUncheckedLocked(who);
|
||
|
|
return admin != null ? admin.maximumTimeToUnlock : time;
|
||
|
|
}
|
||
|
|
|
||
|
|
final int N = mAdminList.size();
|
||
|
|
for (int i=0; i<N; i++) {
|
||
|
|
ActiveAdmin admin = mAdminList.get(i);
|
||
|
|
if (time == 0) {
|
||
|
|
time = admin.maximumTimeToUnlock;
|
||
|
|
} else if (admin.maximumTimeToUnlock != 0
|
||
|
|
&& time > admin.maximumTimeToUnlock) {
|
||
|
|
time = admin.maximumTimeToUnlock;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return time;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void lockNow() {
|
||
|
|
synchronized (this) {
|
||
|
|
// This API can only be called by an active device admin,
|
||
|
|
// so try to retrieve it to check that the caller is one.
|
||
|
|
getActiveAdminForCallerLocked(null,
|
||
|
|
DeviceAdminInfo.USES_POLICY_FORCE_LOCK);
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
mIPowerManager.goToSleepWithReason(SystemClock.uptimeMillis(),
|
||
|
|
WindowManagerPolicy.OFF_BECAUSE_OF_ADMIN);
|
||
|
|
} catch (RemoteException e) {
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void wipeDataLocked(int flags) {
|
||
|
|
if ((flags&DevicePolicyManager.WIPE_EXTERNAL_STORAGE) != 0) {
|
||
|
|
Intent intent = new Intent(ExternalStorageFormatter.FORMAT_AND_FACTORY_RESET);
|
||
|
|
intent.setComponent(ExternalStorageFormatter.COMPONENT_NAME);
|
||
|
|
mWakeLock.acquire(10000);
|
||
|
|
mContext.startService(intent);
|
||
|
|
} else {
|
||
|
|
try {
|
||
|
|
RecoverySystem.rebootWipeUserData(mContext);
|
||
|
|
} catch (IOException e) {
|
||
|
|
Slog.w(TAG, "Failed requesting data wipe", e);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void wipeData(int flags) {
|
||
|
|
synchronized (this) {
|
||
|
|
// This API can only be called by an active device admin,
|
||
|
|
// so try to retrieve it to check that the caller is one.
|
||
|
|
getActiveAdminForCallerLocked(null,
|
||
|
|
DeviceAdminInfo.USES_POLICY_WIPE_DATA);
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
wipeDataLocked(flags);
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void getRemoveWarning(ComponentName comp, final RemoteCallback result) {
|
||
|
|
mContext.enforceCallingOrSelfPermission(
|
||
|
|
android.Manifest.permission.BIND_DEVICE_ADMIN, null);
|
||
|
|
|
||
|
|
synchronized (this) {
|
||
|
|
ActiveAdmin admin = getActiveAdminUncheckedLocked(comp);
|
||
|
|
if (admin == null) {
|
||
|
|
try {
|
||
|
|
result.sendResult(null);
|
||
|
|
} catch (RemoteException e) {
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
Intent intent = new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_DISABLE_REQUESTED);
|
||
|
|
intent.setComponent(admin.info.getComponent());
|
||
|
|
mContext.sendOrderedBroadcast(intent, null, new BroadcastReceiver() {
|
||
|
|
@Override
|
||
|
|
public void onReceive(Context context, Intent intent) {
|
||
|
|
try {
|
||
|
|
result.sendResult(getResultExtras(false));
|
||
|
|
} catch (RemoteException e) {
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}, null, Activity.RESULT_OK, null, null);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void setActivePasswordState(int quality, int length) {
|
||
|
|
mContext.enforceCallingOrSelfPermission(
|
||
|
|
android.Manifest.permission.BIND_DEVICE_ADMIN, null);
|
||
|
|
|
||
|
|
validateQualityConstant(quality);
|
||
|
|
|
||
|
|
synchronized (this) {
|
||
|
|
if (mActivePasswordQuality != quality || mActivePasswordLength != length
|
||
|
|
|| mFailedPasswordAttempts != 0) {
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
mActivePasswordQuality = quality;
|
||
|
|
mActivePasswordLength = length;
|
||
|
|
mFailedPasswordAttempts = 0;
|
||
|
|
saveSettingsLocked();
|
||
|
|
sendAdminCommandLocked(DeviceAdminReceiver.ACTION_PASSWORD_CHANGED,
|
||
|
|
DeviceAdminInfo.USES_POLICY_LIMIT_PASSWORD);
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void reportFailedPasswordAttempt() {
|
||
|
|
mContext.enforceCallingOrSelfPermission(
|
||
|
|
android.Manifest.permission.BIND_DEVICE_ADMIN, null);
|
||
|
|
|
||
|
|
synchronized (this) {
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
mFailedPasswordAttempts++;
|
||
|
|
saveSettingsLocked();
|
||
|
|
int max = getMaximumFailedPasswordsForWipe(null);
|
||
|
|
if (max > 0 && mFailedPasswordAttempts >= max) {
|
||
|
|
wipeDataLocked(0);
|
||
|
|
}
|
||
|
|
sendAdminCommandLocked(DeviceAdminReceiver.ACTION_PASSWORD_FAILED,
|
||
|
|
DeviceAdminInfo.USES_POLICY_WATCH_LOGIN);
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public void reportSuccessfulPasswordAttempt() {
|
||
|
|
mContext.enforceCallingOrSelfPermission(
|
||
|
|
android.Manifest.permission.BIND_DEVICE_ADMIN, null);
|
||
|
|
|
||
|
|
synchronized (this) {
|
||
|
|
if (mFailedPasswordAttempts != 0 || mPasswordOwner >= 0) {
|
||
|
|
long ident = Binder.clearCallingIdentity();
|
||
|
|
try {
|
||
|
|
mFailedPasswordAttempts = 0;
|
||
|
|
mPasswordOwner = -1;
|
||
|
|
saveSettingsLocked();
|
||
|
|
sendAdminCommandLocked(DeviceAdminReceiver.ACTION_PASSWORD_SUCCEEDED,
|
||
|
|
DeviceAdminInfo.USES_POLICY_WATCH_LOGIN);
|
||
|
|
} finally {
|
||
|
|
Binder.restoreCallingIdentity(ident);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
|
||
|
|
if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.DUMP)
|
||
|
|
!= PackageManager.PERMISSION_GRANTED) {
|
||
|
|
|
||
|
|
pw.println("Permission Denial: can't dump DevicePolicyManagerService from from pid="
|
||
|
|
+ Binder.getCallingPid()
|
||
|
|
+ ", uid=" + Binder.getCallingUid());
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
final Printer p = new PrintWriterPrinter(pw);
|
||
|
|
|
||
|
|
synchronized (this) {
|
||
|
|
p.println("Current Device Policy Manager state:");
|
||
|
|
|
||
|
|
p.println(" Enabled Device Admins:");
|
||
|
|
final int N = mAdminList.size();
|
||
|
|
for (int i=0; i<N; i++) {
|
||
|
|
ActiveAdmin ap = mAdminList.get(i);
|
||
|
|
if (ap != null) {
|
||
|
|
pw.print(" "); pw.print(ap.info.getComponent().flattenToShortString());
|
||
|
|
pw.println(":");
|
||
|
|
ap.dump(" ", pw);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pw.println(" ");
|
||
|
|
pw.print(" mActivePasswordQuality=0x");
|
||
|
|
pw.println(Integer.toHexString(mActivePasswordQuality));
|
||
|
|
pw.print(" mActivePasswordLength="); pw.println(mActivePasswordLength);
|
||
|
|
pw.print(" mFailedPasswordAttempts="); pw.println(mFailedPasswordAttempts);
|
||
|
|
pw.print(" mPasswordOwner="); pw.println(mPasswordOwner);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|