| /* |
| * 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 com.android.server; |
| |
| import com.android.common.FastXmlSerializer; |
| import com.android.common.XmlUtils; |
| import com.android.internal.content.PackageMonitor; |
| import com.android.internal.widget.LockPatternUtils; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import android.app.Activity; |
| import android.app.DeviceAdminReceiver; |
| import android.app.DeviceAdminInfo; |
| import android.app.DevicePolicyManager; |
| import android.app.IDevicePolicyManager; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.os.Binder; |
| import android.os.IBinder; |
| import android.os.IPowerManager; |
| import android.os.RecoverySystem; |
| import android.os.RemoteCallback; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.util.Log; |
| import android.util.Xml; |
| import android.view.WindowManagerPolicy; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| |
| /** |
| * Implementation of the device policy APIs. |
| */ |
| public class DevicePolicyManagerService extends IDevicePolicyManager.Stub { |
| static final String TAG = "DevicePolicyManagerService"; |
| |
| final Context mContext; |
| final MyPackageMonitor mMonitor; |
| |
| IPowerManager mIPowerManager; |
| |
| int mActivePasswordQuality = DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED; |
| int mActivePasswordLength = 0; |
| int mFailedPasswordAttempts = 0; |
| |
| final HashMap<ComponentName, ActiveAdmin> mAdminMap |
| = new HashMap<ComponentName, ActiveAdmin>(); |
| final ArrayList<ActiveAdmin> mAdminList |
| = new ArrayList<ActiveAdmin>(); |
| |
| static class ActiveAdmin { |
| final DeviceAdminInfo info; |
| |
| int passwordQuality = DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED; |
| int minimumPasswordLength = 0; |
| long maximumTimeToUnlock = 0; |
| int maximumFailedPasswordsForWipe = 0; |
| |
| ActiveAdmin(DeviceAdminInfo _info) { |
| info = _info; |
| } |
| |
| int getUid() { return info.getActivityInfo().applicationInfo.uid; } |
| |
| void writeToXml(XmlSerializer out) |
| throws IllegalArgumentException, IllegalStateException, IOException { |
| out.startTag(null, "policies"); |
| info.writePoliciesToXml(out); |
| out.endTag(null, "policies"); |
| if (passwordQuality != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) { |
| out.startTag(null, "password-quality"); |
| out.attribute(null, "value", Integer.toString(passwordQuality)); |
| out.endTag(null, "password-quality"); |
| if (minimumPasswordLength > 0) { |
| out.startTag(null, "min-password-length"); |
| out.attribute(null, "value", Integer.toString(minimumPasswordLength)); |
| out.endTag(null, "mn-password-length"); |
| } |
| } |
| if (maximumTimeToUnlock != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) { |
| out.startTag(null, "max-time-to-unlock"); |
| out.attribute(null, "value", Long.toString(maximumTimeToUnlock)); |
| out.endTag(null, "max-time-to-unlock"); |
| } |
| if (maximumFailedPasswordsForWipe != 0) { |
| out.startTag(null, "max-failed-password-wipe"); |
| out.attribute(null, "value", Integer.toString(maximumFailedPasswordsForWipe)); |
| out.endTag(null, "max-failed-password-wipe"); |
| } |
| } |
| |
| void readFromXml(XmlPullParser parser) |
| throws XmlPullParserException, IOException { |
| int outerDepth = parser.getDepth(); |
| int type; |
| while ((type=parser.next()) != XmlPullParser.END_DOCUMENT |
| && (type != XmlPullParser.END_TAG || parser.getDepth() > outerDepth)) { |
| if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) { |
| continue; |
| } |
| String tag = parser.getName(); |
| if ("policies".equals(tag)) { |
| info.readPoliciesFromXml(parser); |
| } else if ("password-quality".equals(tag)) { |
| passwordQuality = Integer.parseInt( |
| parser.getAttributeValue(null, "value")); |
| } else if ("min-password-length".equals(tag)) { |
| minimumPasswordLength = Integer.parseInt( |
| parser.getAttributeValue(null, "value")); |
| } else if ("max-time-to-unlock".equals(tag)) { |
| maximumTimeToUnlock = Long.parseLong( |
| parser.getAttributeValue(null, "value")); |
| } else if ("max-failed-password-wipe".equals(tag)) { |
| maximumFailedPasswordsForWipe = Integer.parseInt( |
| parser.getAttributeValue(null, "value")); |
| } else { |
| Log.w(TAG, "Unknown admin tag: " + tag); |
| } |
| XmlUtils.skipCurrentTag(parser); |
| } |
| } |
| } |
| |
| class MyPackageMonitor extends PackageMonitor { |
| public void onSomePackagesChanged() { |
| synchronized (DevicePolicyManagerService.this) { |
| for (int i=mAdminList.size()-1; i>=0; i--) { |
| ActiveAdmin aa = mAdminList.get(i); |
| int change = isPackageDisappearing(aa.info.getPackageName()); |
| if (change == PACKAGE_PERMANENT_CHANGE |
| || change == PACKAGE_TEMPORARY_CHANGE) { |
| Log.w(TAG, "Admin unexpectedly uninstalled: " |
| + aa.info.getComponent()); |
| mAdminList.remove(i); |
| } else if (isPackageModified(aa.info.getPackageName())) { |
| try { |
| mContext.getPackageManager().getReceiverInfo( |
| aa.info.getComponent(), 0); |
| } catch (NameNotFoundException e) { |
| Log.w(TAG, "Admin package change removed component: " |
| + aa.info.getComponent()); |
| mAdminList.remove(i); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Instantiates the service. |
| */ |
| public DevicePolicyManagerService(Context context) { |
| mContext = context; |
| mMonitor = new MyPackageMonitor(); |
| mMonitor.register(context, true); |
| } |
| |
| private IPowerManager getIPowerManager() { |
| if (mIPowerManager == null) { |
| IBinder b = ServiceManager.getService(Context.POWER_SERVICE); |
| mIPowerManager = IPowerManager.Stub.asInterface(b); |
| } |
| return mIPowerManager; |
| } |
| |
| ActiveAdmin getActiveAdminUncheckedLocked(ComponentName who) { |
| ActiveAdmin admin = mAdminMap.get(who); |
| if (admin != null |
| && who.getPackageName().equals(admin.info.getActivityInfo().packageName) |
| && who.getClassName().equals(admin.info.getActivityInfo().name)) { |
| return admin; |
| } |
| return null; |
| } |
| |
| ActiveAdmin getActiveAdminForCallerLocked(ComponentName who, int reqPolicy) |
| throws SecurityException { |
| final int callingUid = Binder.getCallingUid(); |
| if (who != null) { |
| ActiveAdmin admin = mAdminMap.get(who); |
| if (admin == null) { |
| throw new SecurityException("No active admin " + who); |
| } |
| if (admin.getUid() != callingUid) { |
| throw new SecurityException("Admin " + who + " is not owned by uid " |
| + Binder.getCallingUid()); |
| } |
| if (!admin.info.usesPolicy(reqPolicy)) { |
| throw new SecurityException("Admin " + admin.info.getComponent() |
| + " did not specify uses-policy for: " |
| + admin.info.getTagForPolicy(reqPolicy)); |
| } |
| return admin; |
| } else { |
| final int N = mAdminList.size(); |
| for (int i=0; i<N; i++) { |
| ActiveAdmin admin = mAdminList.get(i); |
| if (admin.getUid() == callingUid && admin.info.usesPolicy(reqPolicy)) { |
| return admin; |
| } |
| } |
| throw new SecurityException("No active admin owned by uid " |
| + Binder.getCallingUid() + " for policy #" + reqPolicy); |
| } |
| } |
| |
| void sendAdminCommandLocked(ActiveAdmin admin, String action) { |
| Intent intent = new Intent(action); |
| intent.setComponent(admin.info.getComponent()); |
| mContext.sendBroadcast(intent); |
| } |
| |
| void sendAdminCommandLocked(String action, int reqPolicy) { |
| final int N = mAdminList.size(); |
| if (N > 0) { |
| for (int i=0; i<N; i++) { |
| ActiveAdmin admin = mAdminList.get(i); |
| if (admin.info.usesPolicy(reqPolicy)) { |
| sendAdminCommandLocked(admin, action); |
| } |
| } |
| } |
| } |
| |
| void removeActiveAdminLocked(ComponentName adminReceiver) { |
| ActiveAdmin admin = getActiveAdminUncheckedLocked(adminReceiver); |
| if (admin != null) { |
| sendAdminCommandLocked(admin, |
| DeviceAdminReceiver.ACTION_DEVICE_ADMIN_DISABLED); |
| // XXX need to wait for it to complete. |
| mAdminList.remove(admin); |
| mAdminMap.remove(adminReceiver); |
| } |
| } |
| |
| public DeviceAdminInfo findAdmin(ComponentName adminName) { |
| Intent resolveIntent = new Intent(); |
| resolveIntent.setComponent(adminName); |
| List<ResolveInfo> infos = mContext.getPackageManager().queryBroadcastReceivers( |
| resolveIntent, PackageManager.GET_META_DATA); |
| if (infos == null || infos.size() <= 0) { |
| throw new IllegalArgumentException("Unknown admin: " + adminName); |
| } |
| |
| try { |
| return new DeviceAdminInfo(mContext, infos.get(0)); |
| } catch (XmlPullParserException e) { |
| Log.w(TAG, "Bad device admin requested: " + adminName, e); |
| return null; |
| } catch (IOException e) { |
| Log.w(TAG, "Bad device admin requested: " + adminName, e); |
| return null; |
| } |
| } |
| |
| private static JournaledFile makeJournaledFile() { |
| final String base = "/data/system/device_policies.xml"; |
| return new JournaledFile(new File(base), new File(base + ".tmp")); |
| } |
| |
| private void saveSettingsLocked() { |
| JournaledFile journal = makeJournaledFile(); |
| FileOutputStream stream = null; |
| try { |
| stream = new FileOutputStream(journal.chooseForWrite(), false); |
| XmlSerializer out = new FastXmlSerializer(); |
| out.setOutput(stream, "utf-8"); |
| out.startDocument(null, true); |
| |
| out.startTag(null, "policies"); |
| |
| final int N = mAdminList.size(); |
| for (int i=0; i<N; i++) { |
| ActiveAdmin ap = mAdminList.get(i); |
| if (ap != null) { |
| out.startTag(null, "admin"); |
| out.attribute(null, "name", ap.info.getComponent().flattenToString()); |
| ap.writeToXml(out); |
| out.endTag(null, "admin"); |
| } |
| } |
| |
| out.endTag(null, "policies"); |
| |
| if (mFailedPasswordAttempts != 0) { |
| out.startTag(null, "failed-password-attempts"); |
| out.attribute(null, "value", Integer.toString(mFailedPasswordAttempts)); |
| out.endTag(null, "failed-password-attempts"); |
| } |
| |
| out.endDocument(); |
| stream.close(); |
| journal.commit(); |
| } catch (IOException e) { |
| try { |
| if (stream != null) { |
| stream.close(); |
| } |
| } catch (IOException ex) { |
| // Ignore |
| } |
| journal.rollback(); |
| } |
| } |
| |
| 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) { |
| Log.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 { |
| Log.w(TAG, "Unknown tag: " + tag); |
| XmlUtils.skipCurrentTag(parser); |
| } |
| } |
| } catch (NullPointerException e) { |
| Log.w(TAG, "failed parsing " + file + " " + e); |
| } catch (NumberFormatException e) { |
| Log.w(TAG, "failed parsing " + file + " " + e); |
| } catch (XmlPullParserException e) { |
| Log.w(TAG, "failed parsing " + file + " " + e); |
| } catch (IOException e) { |
| Log.w(TAG, "failed parsing " + file + " " + e); |
| } catch (IndexOutOfBoundsException e) { |
| Log.w(TAG, "failed parsing " + file + " " + e); |
| } |
| try { |
| if (stream != null) { |
| stream.close(); |
| } |
| } catch (IOException e) { |
| // Ignore |
| } |
| |
| long timeMs = getMaximumTimeToLock(null); |
| if (timeMs <= 0) { |
| timeMs = Integer.MAX_VALUE; |
| } |
| try { |
| getIPowerManager().setMaximumScreenOffTimeount((int)timeMs); |
| } catch (RemoteException e) { |
| Log.w(TAG, "Failure talking with power manager", e); |
| } |
| } |
| |
| 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 mode) { |
| synchronized (this) { |
| if (who == null) { |
| throw new NullPointerException("ComponentName is null"); |
| } |
| ActiveAdmin ap = getActiveAdminForCallerLocked(who, |
| DeviceAdminInfo.USES_POLICY_LIMIT_PASSWORD); |
| if (ap.passwordQuality != mode) { |
| ap.passwordQuality = mode; |
| 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 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 adjQuality = LockPatternUtils.adjustPasswordMode(password, quality); |
| if (adjQuality == DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) { |
| Log.w(TAG, "resetPassword: password does not meet quality " + quality); |
| return false; |
| } |
| quality = adjQuality; |
| } |
| int length = getPasswordMinimumLength(null); |
| if (password.length() < length) { |
| Log.w(TAG, "resetPassword: password does not meet length " + length); |
| 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); |
| } 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) { |
| Log.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) { |
| try { |
| RecoverySystem.rebootWipeUserData(mContext); |
| } catch (IOException e) { |
| Log.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); |
| |
| synchronized (this) { |
| if (mActivePasswordQuality != quality || mActivePasswordLength != length |
| || mFailedPasswordAttempts != 0) { |
| long ident = Binder.clearCallingIdentity(); |
| try { |
| mActivePasswordQuality = quality; |
| mActivePasswordLength = length; |
| if (mFailedPasswordAttempts != 0) { |
| 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) { |
| long ident = Binder.clearCallingIdentity(); |
| try { |
| mFailedPasswordAttempts = 0; |
| saveSettingsLocked(); |
| sendAdminCommandLocked(DeviceAdminReceiver.ACTION_PASSWORD_SUCCEEDED, |
| DeviceAdminInfo.USES_POLICY_WATCH_LOGIN); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| } |
| } |
| } |
