| /* |
| * Copyright (C) 2011 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.net; |
| |
| import static android.Manifest.permission.ACCESS_NETWORK_STATE; |
| import static android.Manifest.permission.CONNECTIVITY_INTERNAL; |
| import static android.Manifest.permission.DUMP; |
| import static android.Manifest.permission.MANAGE_NETWORK_POLICY; |
| import static android.Manifest.permission.READ_NETWORK_USAGE_HISTORY; |
| import static android.Manifest.permission.READ_PHONE_STATE; |
| import static android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE; |
| import static android.content.Intent.ACTION_PACKAGE_ADDED; |
| import static android.content.Intent.ACTION_UID_REMOVED; |
| import static android.content.Intent.ACTION_USER_ADDED; |
| import static android.content.Intent.ACTION_USER_REMOVED; |
| import static android.content.Intent.EXTRA_UID; |
| import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; |
| import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_DISABLED; |
| import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED; |
| import static android.net.ConnectivityManager.RESTRICT_BACKGROUND_STATUS_WHITELISTED; |
| import static android.net.ConnectivityManager.TYPE_MOBILE; |
| import static android.net.ConnectivityManager.TYPE_WIMAX; |
| import static android.net.ConnectivityManager.isNetworkTypeMobile; |
| import static android.net.NetworkPolicy.CYCLE_NONE; |
| import static android.net.NetworkPolicy.LIMIT_DISABLED; |
| import static android.net.NetworkPolicy.SNOOZE_NEVER; |
| import static android.net.NetworkPolicy.WARNING_DISABLED; |
| import static android.net.NetworkPolicyManager.EXTRA_NETWORK_TEMPLATE; |
| import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_DOZABLE; |
| import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_POWERSAVE; |
| import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_STANDBY; |
| import static android.net.NetworkPolicyManager.FIREWALL_RULE_ALLOW; |
| import static android.net.NetworkPolicyManager.FIREWALL_RULE_DEFAULT; |
| import static android.net.NetworkPolicyManager.FIREWALL_RULE_DENY; |
| import static android.net.NetworkPolicyManager.POLICY_NONE; |
| import static android.net.NetworkPolicyManager.POLICY_REJECT_METERED_BACKGROUND; |
| import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; |
| import static android.net.NetworkPolicyManager.RULE_ALLOW_METERED; |
| import static android.net.NetworkPolicyManager.MASK_METERED_NETWORKS; |
| import static android.net.NetworkPolicyManager.MASK_ALL_NETWORKS; |
| import static android.net.NetworkPolicyManager.RULE_NONE; |
| import static android.net.NetworkPolicyManager.RULE_REJECT_ALL; |
| import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; |
| import static android.net.NetworkPolicyManager.RULE_TEMPORARY_ALLOW_METERED; |
| import static android.net.NetworkPolicyManager.computeLastCycleBoundary; |
| import static android.net.NetworkPolicyManager.uidRulesToString; |
| import static android.net.NetworkTemplate.MATCH_MOBILE_3G_LOWER; |
| import static android.net.NetworkTemplate.MATCH_MOBILE_4G; |
| import static android.net.NetworkTemplate.MATCH_MOBILE_ALL; |
| import static android.net.NetworkTemplate.MATCH_WIFI; |
| import static android.net.NetworkTemplate.buildTemplateMobileAll; |
| import static android.net.TrafficStats.MB_IN_BYTES; |
| import static android.net.wifi.WifiManager.CHANGE_REASON_ADDED; |
| import static android.net.wifi.WifiManager.CHANGE_REASON_REMOVED; |
| import static android.net.wifi.WifiManager.CONFIGURED_NETWORKS_CHANGED_ACTION; |
| import static android.net.wifi.WifiManager.EXTRA_CHANGE_REASON; |
| import static android.net.wifi.WifiManager.EXTRA_NETWORK_INFO; |
| import static android.net.wifi.WifiManager.EXTRA_WIFI_CONFIGURATION; |
| import static android.net.wifi.WifiManager.EXTRA_WIFI_INFO; |
| import static android.text.format.DateUtils.DAY_IN_MILLIS; |
| |
| import static com.android.internal.util.ArrayUtils.appendInt; |
| import static com.android.internal.util.Preconditions.checkNotNull; |
| import static com.android.internal.util.XmlUtils.readBooleanAttribute; |
| import static com.android.internal.util.XmlUtils.readIntAttribute; |
| import static com.android.internal.util.XmlUtils.readLongAttribute; |
| import static com.android.internal.util.XmlUtils.writeBooleanAttribute; |
| import static com.android.internal.util.XmlUtils.writeIntAttribute; |
| import static com.android.internal.util.XmlUtils.writeLongAttribute; |
| import static com.android.server.NetworkManagementService.LIMIT_GLOBAL_ALERT; |
| import static com.android.server.net.NetworkStatsService.ACTION_NETWORK_STATS_UPDATED; |
| |
| import static org.xmlpull.v1.XmlPullParser.END_DOCUMENT; |
| import static org.xmlpull.v1.XmlPullParser.END_TAG; |
| import static org.xmlpull.v1.XmlPullParser.START_TAG; |
| |
| import android.Manifest; |
| import android.annotation.IntDef; |
| import android.app.ActivityManager; |
| import android.app.AppGlobals; |
| import android.app.AppOpsManager; |
| import android.app.IActivityManager; |
| import android.app.INotificationManager; |
| import android.app.IUidObserver; |
| import android.app.Notification; |
| import android.app.PendingIntent; |
| import android.app.usage.UsageStatsManagerInternal; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.IPackageManager; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.content.pm.UserInfo; |
| import android.content.res.Resources; |
| import android.net.ConnectivityManager; |
| import android.net.IConnectivityManager; |
| import android.net.INetworkManagementEventObserver; |
| import android.net.INetworkPolicyListener; |
| import android.net.INetworkPolicyManager; |
| import android.net.INetworkStatsService; |
| import android.net.LinkProperties; |
| import android.net.NetworkIdentity; |
| import android.net.NetworkInfo; |
| import android.net.NetworkPolicy; |
| import android.net.NetworkPolicyManager; |
| import android.net.NetworkQuotaInfo; |
| import android.net.NetworkState; |
| import android.net.NetworkTemplate; |
| import android.net.wifi.WifiConfiguration; |
| import android.net.wifi.WifiInfo; |
| import android.net.wifi.WifiManager; |
| import android.os.Binder; |
| import android.os.Environment; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.IDeviceIdleController; |
| import android.os.INetworkManagementService; |
| import android.os.IPowerManager; |
| import android.os.Message; |
| import android.os.MessageQueue.IdleHandler; |
| import android.os.PowerManager; |
| import android.os.PowerManagerInternal; |
| import android.os.RemoteCallbackList; |
| import android.os.RemoteException; |
| import android.os.ResultReceiver; |
| import android.os.ServiceManager; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| import android.telephony.SubscriptionManager; |
| import android.telephony.TelephonyManager; |
| import android.text.format.Formatter; |
| import android.text.format.Time; |
| import android.util.ArrayMap; |
| import android.util.ArraySet; |
| import android.util.AtomicFile; |
| import android.util.DebugUtils; |
| import android.util.Log; |
| import android.util.NtpTrustedTime; |
| import android.util.Pair; |
| import android.util.Slog; |
| import android.util.SparseBooleanArray; |
| import android.util.SparseIntArray; |
| import android.util.TrustedTime; |
| import android.util.Xml; |
| |
| import com.android.internal.R; |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.content.PackageMonitor; |
| import com.android.internal.util.ArrayUtils; |
| import com.android.internal.util.FastXmlSerializer; |
| import com.android.internal.util.IndentingPrintWriter; |
| import com.android.server.DeviceIdleController; |
| import com.android.server.EventLogTags; |
| import com.android.server.LocalServices; |
| import com.android.server.SystemConfig; |
| |
| import libcore.io.IoUtils; |
| |
| import com.google.android.collect.Lists; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| import org.xmlpull.v1.XmlSerializer; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.nio.charset.StandardCharsets; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * Service that maintains low-level network policy rules, using |
| * {@link NetworkStatsService} statistics to drive those rules. |
| * <p> |
| * Derives active rules by combining a given policy with other system status, |
| * and delivers to listeners, such as {@link ConnectivityManager}, for |
| * enforcement. |
| * |
| * <p> |
| * This class uses 2-3 locks to synchronize state: |
| * <ul> |
| * <li>{@code mUidRulesFirstLock}: used to guard state related to individual UIDs (such as firewall |
| * rules). |
| * <li>{@code mNetworkPoliciesSecondLock}: used to guard state related to network interfaces (such |
| * as network policies). |
| * <li>{@code allLocks}: not a "real" lock, but an indication (through @GuardedBy) that all locks |
| * must be held. |
| * </ul> |
| * |
| * <p> |
| * As such, methods that require synchronization have the following prefixes: |
| * <ul> |
| * <li>{@code UL()}: require the "UID" lock ({@code mUidRulesFirstLock}). |
| * <li>{@code NL()}: require the "Network" lock ({@code mNetworkPoliciesSecondLock}). |
| * <li>{@code AL()}: require all locks, which must be obtained in order ({@code mUidRulesFirstLock} |
| * first, then {@code mNetworkPoliciesSecondLock}, then {@code mYetAnotherGuardThirdLock}, etc.. |
| * </ul> |
| */ |
| public class NetworkPolicyManagerService extends INetworkPolicyManager.Stub { |
| static final String TAG = "NetworkPolicy"; |
| private static final boolean LOGD = false; |
| private static final boolean LOGV = false; |
| |
| private static final int VERSION_INIT = 1; |
| private static final int VERSION_ADDED_SNOOZE = 2; |
| private static final int VERSION_ADDED_RESTRICT_BACKGROUND = 3; |
| private static final int VERSION_ADDED_METERED = 4; |
| private static final int VERSION_SPLIT_SNOOZE = 5; |
| private static final int VERSION_ADDED_TIMEZONE = 6; |
| private static final int VERSION_ADDED_INFERRED = 7; |
| private static final int VERSION_SWITCH_APP_ID = 8; |
| private static final int VERSION_ADDED_NETWORK_ID = 9; |
| private static final int VERSION_SWITCH_UID = 10; |
| private static final int VERSION_LATEST = VERSION_SWITCH_UID; |
| |
| @VisibleForTesting |
| public static final int TYPE_WARNING = 0x1; |
| @VisibleForTesting |
| public static final int TYPE_LIMIT = 0x2; |
| @VisibleForTesting |
| public static final int TYPE_LIMIT_SNOOZED = 0x3; |
| |
| private static final String TAG_POLICY_LIST = "policy-list"; |
| private static final String TAG_NETWORK_POLICY = "network-policy"; |
| private static final String TAG_UID_POLICY = "uid-policy"; |
| private static final String TAG_APP_POLICY = "app-policy"; |
| private static final String TAG_WHITELIST = "whitelist"; |
| private static final String TAG_RESTRICT_BACKGROUND = "restrict-background"; |
| private static final String TAG_REVOKED_RESTRICT_BACKGROUND = "revoked-restrict-background"; |
| |
| private static final String ATTR_VERSION = "version"; |
| private static final String ATTR_RESTRICT_BACKGROUND = "restrictBackground"; |
| private static final String ATTR_NETWORK_TEMPLATE = "networkTemplate"; |
| private static final String ATTR_SUBSCRIBER_ID = "subscriberId"; |
| private static final String ATTR_NETWORK_ID = "networkId"; |
| private static final String ATTR_CYCLE_DAY = "cycleDay"; |
| private static final String ATTR_CYCLE_TIMEZONE = "cycleTimezone"; |
| private static final String ATTR_WARNING_BYTES = "warningBytes"; |
| private static final String ATTR_LIMIT_BYTES = "limitBytes"; |
| private static final String ATTR_LAST_SNOOZE = "lastSnooze"; |
| private static final String ATTR_LAST_WARNING_SNOOZE = "lastWarningSnooze"; |
| private static final String ATTR_LAST_LIMIT_SNOOZE = "lastLimitSnooze"; |
| private static final String ATTR_METERED = "metered"; |
| private static final String ATTR_INFERRED = "inferred"; |
| private static final String ATTR_UID = "uid"; |
| private static final String ATTR_APP_ID = "appId"; |
| private static final String ATTR_POLICY = "policy"; |
| |
| private static final String ACTION_ALLOW_BACKGROUND = |
| "com.android.server.net.action.ALLOW_BACKGROUND"; |
| private static final String ACTION_SNOOZE_WARNING = |
| "com.android.server.net.action.SNOOZE_WARNING"; |
| |
| private static final long TIME_CACHE_MAX_AGE = DAY_IN_MILLIS; |
| |
| private static final int MSG_RULES_CHANGED = 1; |
| private static final int MSG_METERED_IFACES_CHANGED = 2; |
| private static final int MSG_LIMIT_REACHED = 5; |
| private static final int MSG_RESTRICT_BACKGROUND_CHANGED = 6; |
| private static final int MSG_ADVISE_PERSIST_THRESHOLD = 7; |
| private static final int MSG_SCREEN_ON_CHANGED = 8; |
| private static final int MSG_RESTRICT_BACKGROUND_WHITELIST_CHANGED = 9; |
| private static final int MSG_UPDATE_INTERFACE_QUOTA = 10; |
| private static final int MSG_REMOVE_INTERFACE_QUOTA = 11; |
| private static final int MSG_RESTRICT_BACKGROUND_BLACKLIST_CHANGED = 12; |
| |
| private final Context mContext; |
| private final IActivityManager mActivityManager; |
| private final IPowerManager mPowerManager; |
| private final INetworkStatsService mNetworkStats; |
| private final INetworkManagementService mNetworkManager; |
| private UsageStatsManagerInternal mUsageStats; |
| private final TrustedTime mTime; |
| private final UserManager mUserManager; |
| |
| private IConnectivityManager mConnManager; |
| private INotificationManager mNotifManager; |
| private PowerManagerInternal mPowerManagerInternal; |
| private IDeviceIdleController mDeviceIdleController; |
| |
| // See main javadoc for instructions on how to use these locks. |
| final Object mUidRulesFirstLock = new Object(); |
| final Object mNetworkPoliciesSecondLock = new Object(); |
| |
| @GuardedBy("allLocks") volatile boolean mSystemReady; |
| |
| @GuardedBy("mUidRulesFirstLock") volatile boolean mScreenOn; |
| @GuardedBy("mUidRulesFirstLock") volatile boolean mRestrictBackground; |
| @GuardedBy("mUidRulesFirstLock") volatile boolean mRestrictPower; |
| @GuardedBy("mUidRulesFirstLock") volatile boolean mDeviceIdleMode; |
| |
| private final boolean mSuppressDefaultPolicy; |
| |
| /** Defined network policies. */ |
| final ArrayMap<NetworkTemplate, NetworkPolicy> mNetworkPolicy = new ArrayMap<>(); |
| /** Currently active network rules for ifaces. */ |
| final ArrayMap<NetworkPolicy, String[]> mNetworkRules = new ArrayMap<>(); |
| |
| /** Defined UID policies. */ |
| @GuardedBy("mUidRulesFirstLock") final SparseIntArray mUidPolicy = new SparseIntArray(); |
| /** Currently derived rules for each UID. */ |
| @GuardedBy("mUidRulesFirstLock") final SparseIntArray mUidRules = new SparseIntArray(); |
| |
| @GuardedBy("mUidRulesFirstLock") |
| final SparseIntArray mUidFirewallStandbyRules = new SparseIntArray(); |
| @GuardedBy("mUidRulesFirstLock") |
| final SparseIntArray mUidFirewallDozableRules = new SparseIntArray(); |
| @GuardedBy("mUidRulesFirstLock") |
| final SparseIntArray mUidFirewallPowerSaveRules = new SparseIntArray(); |
| |
| /** Set of states for the child firewall chains. True if the chain is active. */ |
| @GuardedBy("mUidRulesFirstLock") |
| final SparseBooleanArray mFirewallChainStates = new SparseBooleanArray(); |
| |
| /** |
| * UIDs that have been white-listed to always be able to have network access |
| * in power save mode, except device idle (doze) still applies. |
| * TODO: An int array might be sufficient |
| */ |
| @GuardedBy("mUidRulesFirstLock") |
| private final SparseBooleanArray mPowerSaveWhitelistExceptIdleAppIds = new SparseBooleanArray(); |
| |
| /** |
| * UIDs that have been white-listed to always be able to have network access |
| * in power save mode. |
| * TODO: An int array might be sufficient |
| */ |
| @GuardedBy("mUidRulesFirstLock") |
| private final SparseBooleanArray mPowerSaveWhitelistAppIds = new SparseBooleanArray(); |
| |
| @GuardedBy("mUidRulesFirstLock") |
| private final SparseBooleanArray mPowerSaveTempWhitelistAppIds = new SparseBooleanArray(); |
| |
| /** |
| * UIDs that have been white-listed to avoid restricted background. |
| */ |
| @GuardedBy("mUidRulesFirstLock") |
| private final SparseBooleanArray mRestrictBackgroundWhitelistUids = new SparseBooleanArray(); |
| |
| /** |
| * UIDs that have been initially white-listed by system to avoid restricted background. |
| */ |
| @GuardedBy("mUidRulesFirstLock") |
| private final SparseBooleanArray mDefaultRestrictBackgroundWhitelistUids = |
| new SparseBooleanArray(); |
| |
| /** |
| * UIDs that have been initially white-listed by system to avoid restricted background, |
| * but later revoked by user. |
| */ |
| @GuardedBy("mUidRulesFirstLock") |
| private final SparseBooleanArray mRestrictBackgroundWhitelistRevokedUids = |
| new SparseBooleanArray(); |
| |
| /** Set of ifaces that are metered. */ |
| @GuardedBy("mNetworkPoliciesSecondLock") |
| private ArraySet<String> mMeteredIfaces = new ArraySet<>(); |
| /** Set of over-limit templates that have been notified. */ |
| @GuardedBy("mNetworkPoliciesSecondLock") |
| private final ArraySet<NetworkTemplate> mOverLimitNotified = new ArraySet<>(); |
| |
| /** Set of currently active {@link Notification} tags. */ |
| @GuardedBy("mNetworkPoliciesSecondLock") |
| private final ArraySet<String> mActiveNotifs = new ArraySet<String>(); |
| |
| /** Foreground at UID granularity. */ |
| @GuardedBy("mUidRulesFirstLock") |
| final SparseIntArray mUidState = new SparseIntArray(); |
| |
| /** Higher priority listener before general event dispatch */ |
| private INetworkPolicyListener mConnectivityListener; |
| |
| private final RemoteCallbackList<INetworkPolicyListener> |
| mListeners = new RemoteCallbackList<>(); |
| |
| final Handler mHandler; |
| |
| @GuardedBy("allLocks") |
| private final AtomicFile mPolicyFile; |
| |
| private final AppOpsManager mAppOps; |
| |
| private final MyPackageMonitor mPackageMonitor; |
| private final IPackageManager mIPm; |
| |
| |
| // TODO: keep whitelist of system-critical services that should never have |
| // rules enforced, such as system, phone, and radio UIDs. |
| |
| // TODO: migrate notifications to SystemUI |
| |
| public NetworkPolicyManagerService(Context context, IActivityManager activityManager, |
| IPowerManager powerManager, INetworkStatsService networkStats, |
| INetworkManagementService networkManagement) { |
| this(context, activityManager, powerManager, networkStats, networkManagement, |
| NtpTrustedTime.getInstance(context), getSystemDir(), false); |
| } |
| |
| private static File getSystemDir() { |
| return new File(Environment.getDataDirectory(), "system"); |
| } |
| |
| public NetworkPolicyManagerService(Context context, IActivityManager activityManager, |
| IPowerManager powerManager, INetworkStatsService networkStats, |
| INetworkManagementService networkManagement, TrustedTime time, File systemDir, |
| boolean suppressDefaultPolicy) { |
| mContext = checkNotNull(context, "missing context"); |
| mActivityManager = checkNotNull(activityManager, "missing activityManager"); |
| mPowerManager = checkNotNull(powerManager, "missing powerManager"); |
| mNetworkStats = checkNotNull(networkStats, "missing networkStats"); |
| mNetworkManager = checkNotNull(networkManagement, "missing networkManagement"); |
| mDeviceIdleController = IDeviceIdleController.Stub.asInterface(ServiceManager.getService( |
| Context.DEVICE_IDLE_CONTROLLER)); |
| mTime = checkNotNull(time, "missing TrustedTime"); |
| mUserManager = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| mIPm = AppGlobals.getPackageManager(); |
| |
| HandlerThread thread = new HandlerThread(TAG); |
| thread.start(); |
| mHandler = new Handler(thread.getLooper(), mHandlerCallback); |
| |
| mSuppressDefaultPolicy = suppressDefaultPolicy; |
| |
| mPolicyFile = new AtomicFile(new File(systemDir, "netpolicy.xml")); |
| |
| mAppOps = context.getSystemService(AppOpsManager.class); |
| |
| mPackageMonitor = new MyPackageMonitor(); |
| |
| // Expose private service for system components to use. |
| LocalServices.addService(NetworkPolicyManagerInternal.class, |
| new NetworkPolicyManagerInternalImpl()); |
| } |
| |
| public void bindConnectivityManager(IConnectivityManager connManager) { |
| mConnManager = checkNotNull(connManager, "missing IConnectivityManager"); |
| } |
| |
| public void bindNotificationManager(INotificationManager notifManager) { |
| mNotifManager = checkNotNull(notifManager, "missing INotificationManager"); |
| } |
| |
| void updatePowerSaveWhitelistUL() { |
| try { |
| int[] whitelist = mDeviceIdleController.getAppIdWhitelistExceptIdle(); |
| mPowerSaveWhitelistExceptIdleAppIds.clear(); |
| if (whitelist != null) { |
| for (int uid : whitelist) { |
| mPowerSaveWhitelistExceptIdleAppIds.put(uid, true); |
| } |
| } |
| whitelist = mDeviceIdleController.getAppIdWhitelist(); |
| mPowerSaveWhitelistAppIds.clear(); |
| if (whitelist != null) { |
| for (int uid : whitelist) { |
| mPowerSaveWhitelistAppIds.put(uid, true); |
| } |
| } |
| } catch (RemoteException e) { |
| } |
| } |
| |
| /** |
| * Whitelists pre-defined apps for restrict background, but only if the user didn't already |
| * revoke the whitelist. |
| * |
| * @return whether any uid has been added to {@link #mRestrictBackgroundWhitelistUids}. |
| */ |
| boolean addDefaultRestrictBackgroundWhitelistUidsUL() { |
| final List<UserInfo> users = mUserManager.getUsers(); |
| final int numberUsers = users.size(); |
| |
| boolean changed = false; |
| for (int i = 0; i < numberUsers; i++) { |
| final UserInfo user = users.get(i); |
| changed = addDefaultRestrictBackgroundWhitelistUidsUL(user.id) || changed; |
| } |
| return changed; |
| } |
| |
| private boolean addDefaultRestrictBackgroundWhitelistUidsUL(int userId) { |
| final SystemConfig sysConfig = SystemConfig.getInstance(); |
| final PackageManager pm = mContext.getPackageManager(); |
| final ArraySet<String> allowDataUsage = sysConfig.getAllowInDataUsageSave(); |
| boolean changed = false; |
| for (int i = 0; i < allowDataUsage.size(); i++) { |
| final String pkg = allowDataUsage.valueAt(i); |
| if (LOGD) |
| Slog.d(TAG, "checking restricted background whitelisting for package " + pkg |
| + " and user " + userId); |
| final ApplicationInfo app; |
| try { |
| app = pm.getApplicationInfoAsUser(pkg, PackageManager.MATCH_SYSTEM_ONLY, userId); |
| } catch (PackageManager.NameNotFoundException e) { |
| // Should not happen |
| Slog.wtf(TAG, "No ApplicationInfo for package " + pkg); |
| continue; |
| } |
| if (!app.isPrivilegedApp()) { |
| Slog.wtf(TAG, "pm.getApplicationInfoAsUser() returned non-privileged app: " + pkg); |
| continue; |
| } |
| final int uid = UserHandle.getUid(userId, app.uid); |
| mDefaultRestrictBackgroundWhitelistUids.append(uid, true); |
| if (LOGD) |
| Slog.d(TAG, "Adding uid " + uid + " (user " + userId + ") to default restricted " |
| + "background whitelist. Revoked status: " |
| + mRestrictBackgroundWhitelistRevokedUids.get(uid)); |
| if (!mRestrictBackgroundWhitelistRevokedUids.get(uid)) { |
| Slog.i(TAG, "adding default package " + pkg + " (uid " + uid + " for user " |
| + userId + ") to restrict background whitelist"); |
| mRestrictBackgroundWhitelistUids.append(uid, true); |
| changed = true; |
| } |
| } |
| return changed; |
| } |
| |
| void updatePowerSaveTempWhitelistUL() { |
| try { |
| // Clear the states of the current whitelist |
| final int N = mPowerSaveTempWhitelistAppIds.size(); |
| for (int i = 0; i < N; i++) { |
| mPowerSaveTempWhitelistAppIds.setValueAt(i, false); |
| } |
| // Update the states with the new whitelist |
| final int[] whitelist = mDeviceIdleController.getAppIdTempWhitelist(); |
| if (whitelist != null) { |
| for (int uid : whitelist) { |
| mPowerSaveTempWhitelistAppIds.put(uid, true); |
| } |
| } |
| } catch (RemoteException e) { |
| } |
| } |
| |
| /** |
| * Remove unnecessary entries in the temp whitelist |
| */ |
| void purgePowerSaveTempWhitelistUL() { |
| final int N = mPowerSaveTempWhitelistAppIds.size(); |
| for (int i = N - 1; i >= 0; i--) { |
| if (mPowerSaveTempWhitelistAppIds.valueAt(i) == false) { |
| mPowerSaveTempWhitelistAppIds.removeAt(i); |
| } |
| } |
| } |
| |
| public void systemReady() { |
| if (!isBandwidthControlEnabled()) { |
| Slog.w(TAG, "bandwidth controls disabled, unable to enforce policy"); |
| return; |
| } |
| |
| mUsageStats = LocalServices.getService(UsageStatsManagerInternal.class); |
| |
| mPackageMonitor.register(mContext, mHandler.getLooper(), UserHandle.ALL, true); |
| |
| synchronized (mUidRulesFirstLock) { |
| synchronized (mNetworkPoliciesSecondLock) { |
| updatePowerSaveWhitelistUL(); |
| mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class); |
| mPowerManagerInternal.registerLowPowerModeObserver( |
| new PowerManagerInternal.LowPowerModeListener() { |
| @Override |
| public void onLowPowerModeChanged(boolean enabled) { |
| if (LOGD) Slog.d(TAG, "onLowPowerModeChanged(" + enabled + ")"); |
| synchronized (mUidRulesFirstLock) { |
| if (mRestrictPower != enabled) { |
| mRestrictPower = enabled; |
| updateRulesForRestrictPowerUL(); |
| } |
| } |
| } |
| }); |
| mRestrictPower = mPowerManagerInternal.getLowPowerModeEnabled(); |
| |
| mSystemReady = true; |
| |
| // read policy from disk |
| readPolicyAL(); |
| |
| if (addDefaultRestrictBackgroundWhitelistUidsUL()) { |
| writePolicyAL(); |
| } |
| |
| setRestrictBackgroundUL(mRestrictBackground); |
| updateRulesForGlobalChangeAL(false); |
| updateNotificationsNL(); |
| } |
| } |
| |
| updateScreenOn(); |
| |
| try { |
| mActivityManager.registerUidObserver(mUidObserver, |
| ActivityManager.UID_OBSERVER_PROCSTATE|ActivityManager.UID_OBSERVER_GONE); |
| mNetworkManager.registerObserver(mAlertObserver); |
| } catch (RemoteException e) { |
| // ignored; both services live in system_server |
| } |
| |
| // TODO: traverse existing processes to know foreground state, or have |
| // activitymanager dispatch current state when new observer attached. |
| |
| final IntentFilter screenFilter = new IntentFilter(); |
| screenFilter.addAction(Intent.ACTION_SCREEN_ON); |
| screenFilter.addAction(Intent.ACTION_SCREEN_OFF); |
| mContext.registerReceiver(mScreenReceiver, screenFilter); |
| |
| // listen for changes to power save whitelist |
| final IntentFilter whitelistFilter = new IntentFilter( |
| PowerManager.ACTION_POWER_SAVE_WHITELIST_CHANGED); |
| mContext.registerReceiver(mPowerSaveWhitelistReceiver, whitelistFilter, null, mHandler); |
| |
| DeviceIdleController.LocalService deviceIdleService |
| = LocalServices.getService(DeviceIdleController.LocalService.class); |
| deviceIdleService.setNetworkPolicyTempWhitelistCallback(mTempPowerSaveChangedCallback); |
| |
| // watch for network interfaces to be claimed |
| final IntentFilter connFilter = new IntentFilter(CONNECTIVITY_ACTION); |
| mContext.registerReceiver(mConnReceiver, connFilter, CONNECTIVITY_INTERNAL, mHandler); |
| |
| // listen for package changes to update policy |
| final IntentFilter packageFilter = new IntentFilter(); |
| packageFilter.addAction(ACTION_PACKAGE_ADDED); |
| packageFilter.addDataScheme("package"); |
| mContext.registerReceiver(mPackageReceiver, packageFilter, null, mHandler); |
| |
| // listen for UID changes to update policy |
| mContext.registerReceiver( |
| mUidRemovedReceiver, new IntentFilter(ACTION_UID_REMOVED), null, mHandler); |
| |
| // listen for user changes to update policy |
| final IntentFilter userFilter = new IntentFilter(); |
| userFilter.addAction(ACTION_USER_ADDED); |
| userFilter.addAction(ACTION_USER_REMOVED); |
| mContext.registerReceiver(mUserReceiver, userFilter, null, mHandler); |
| |
| // listen for stats update events |
| final IntentFilter statsFilter = new IntentFilter(ACTION_NETWORK_STATS_UPDATED); |
| mContext.registerReceiver( |
| mStatsReceiver, statsFilter, READ_NETWORK_USAGE_HISTORY, mHandler); |
| |
| // listen for restrict background changes from notifications |
| final IntentFilter allowFilter = new IntentFilter(ACTION_ALLOW_BACKGROUND); |
| mContext.registerReceiver(mAllowReceiver, allowFilter, MANAGE_NETWORK_POLICY, mHandler); |
| |
| // listen for snooze warning from notifications |
| final IntentFilter snoozeWarningFilter = new IntentFilter(ACTION_SNOOZE_WARNING); |
| mContext.registerReceiver(mSnoozeWarningReceiver, snoozeWarningFilter, |
| MANAGE_NETWORK_POLICY, mHandler); |
| |
| // listen for configured wifi networks to be removed |
| final IntentFilter wifiConfigFilter = new IntentFilter(CONFIGURED_NETWORKS_CHANGED_ACTION); |
| mContext.registerReceiver(mWifiConfigReceiver, wifiConfigFilter, null, mHandler); |
| |
| // listen for wifi state changes to catch metered hint |
| final IntentFilter wifiStateFilter = new IntentFilter( |
| WifiManager.NETWORK_STATE_CHANGED_ACTION); |
| mContext.registerReceiver(mWifiStateReceiver, wifiStateFilter, null, mHandler); |
| |
| mUsageStats.addAppIdleStateChangeListener(new AppIdleStateChangeListener()); |
| |
| } |
| |
| final private IUidObserver mUidObserver = new IUidObserver.Stub() { |
| @Override public void onUidStateChanged(int uid, int procState) throws RemoteException { |
| synchronized (mUidRulesFirstLock) { |
| updateUidStateUL(uid, procState); |
| } |
| } |
| |
| @Override public void onUidGone(int uid) throws RemoteException { |
| synchronized (mUidRulesFirstLock) { |
| removeUidStateUL(uid); |
| } |
| } |
| |
| @Override public void onUidActive(int uid) throws RemoteException { |
| } |
| |
| @Override public void onUidIdle(int uid) throws RemoteException { |
| } |
| }; |
| |
| final private BroadcastReceiver mPowerSaveWhitelistReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and POWER_SAVE_WHITELIST_CHANGED is protected |
| synchronized (mUidRulesFirstLock) { |
| updatePowerSaveWhitelistUL(); |
| updateRulesForRestrictPowerUL(); |
| } |
| } |
| }; |
| |
| final private Runnable mTempPowerSaveChangedCallback = new Runnable() { |
| @Override |
| public void run() { |
| synchronized (mUidRulesFirstLock) { |
| updatePowerSaveTempWhitelistUL(); |
| updateRulesForTempWhitelistChangeUL(); |
| purgePowerSaveTempWhitelistUL(); |
| } |
| } |
| }; |
| |
| final private BroadcastReceiver mScreenReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // screen-related broadcasts are protected by system, no need |
| // for permissions check. |
| mHandler.obtainMessage(MSG_SCREEN_ON_CHANGED).sendToTarget(); |
| } |
| }; |
| |
| final private BroadcastReceiver mPackageReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and PACKAGE_ADDED is protected |
| |
| final String action = intent.getAction(); |
| final int uid = intent.getIntExtra(EXTRA_UID, -1); |
| if (uid == -1) return; |
| |
| if (ACTION_PACKAGE_ADDED.equals(action)) { |
| // update rules for UID, since it might be subject to |
| // global background data policy |
| if (LOGV) Slog.v(TAG, "ACTION_PACKAGE_ADDED for uid=" + uid); |
| synchronized (mUidRulesFirstLock) { |
| updateRestrictionRulesForUidUL(uid); |
| } |
| } |
| } |
| }; |
| |
| final private BroadcastReceiver mUidRemovedReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and UID_REMOVED is protected |
| |
| final int uid = intent.getIntExtra(EXTRA_UID, -1); |
| if (uid == -1) return; |
| |
| // remove any policy and update rules to clean up |
| if (LOGV) Slog.v(TAG, "ACTION_UID_REMOVED for uid=" + uid); |
| synchronized (mUidRulesFirstLock) { |
| mUidPolicy.delete(uid); |
| updateRestrictionRulesForUidUL(uid); |
| synchronized (mNetworkPoliciesSecondLock) { |
| writePolicyAL(); |
| } |
| } |
| } |
| }; |
| |
| final private BroadcastReceiver mUserReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and USER_ADDED and USER_REMOVED |
| // broadcasts are protected |
| |
| final String action = intent.getAction(); |
| final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1); |
| if (userId == -1) return; |
| |
| switch (action) { |
| case ACTION_USER_REMOVED: |
| case ACTION_USER_ADDED: |
| synchronized (mUidRulesFirstLock) { |
| // Remove any persistable state for the given user; both cleaning up after a |
| // USER_REMOVED, and one last sanity check during USER_ADDED |
| removeUserStateUL(userId, true); |
| if (action == ACTION_USER_ADDED) { |
| // Add apps that are whitelisted by default. |
| addDefaultRestrictBackgroundWhitelistUidsUL(userId); |
| } |
| // Update global restrict for that user |
| synchronized (mNetworkPoliciesSecondLock) { |
| updateRulesForGlobalChangeAL(true); |
| } |
| } |
| break; |
| } |
| } |
| }; |
| |
| /** |
| * Receiver that watches for {@link INetworkStatsService} updates, which we |
| * use to check against {@link NetworkPolicy#warningBytes}. |
| */ |
| final private BroadcastReceiver mStatsReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and verified |
| // READ_NETWORK_USAGE_HISTORY permission above. |
| |
| maybeRefreshTrustedTime(); |
| synchronized (mNetworkPoliciesSecondLock) { |
| updateNetworkEnabledNL(); |
| updateNotificationsNL(); |
| } |
| } |
| }; |
| |
| /** |
| * Receiver that watches for {@link Notification} control of |
| * {@link #mRestrictBackground}. |
| */ |
| final private BroadcastReceiver mAllowReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and verified MANAGE_NETWORK_POLICY |
| // permission above. |
| |
| setRestrictBackground(false); |
| } |
| }; |
| |
| /** |
| * Receiver that watches for {@link Notification} control of |
| * {@link NetworkPolicy#lastWarningSnooze}. |
| */ |
| final private BroadcastReceiver mSnoozeWarningReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and verified MANAGE_NETWORK_POLICY |
| // permission above. |
| |
| final NetworkTemplate template = intent.getParcelableExtra(EXTRA_NETWORK_TEMPLATE); |
| performSnooze(template, TYPE_WARNING); |
| } |
| }; |
| |
| /** |
| * Receiver that watches for {@link WifiConfiguration} to be changed. |
| */ |
| final private BroadcastReceiver mWifiConfigReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and verified CONNECTIVITY_INTERNAL |
| // permission above. |
| |
| final int reason = intent.getIntExtra(EXTRA_CHANGE_REASON, CHANGE_REASON_ADDED); |
| if (reason == CHANGE_REASON_REMOVED) { |
| final WifiConfiguration config = intent.getParcelableExtra( |
| EXTRA_WIFI_CONFIGURATION); |
| if (config.SSID != null) { |
| final NetworkTemplate template = NetworkTemplate.buildTemplateWifi(config.SSID); |
| synchronized (mUidRulesFirstLock) { |
| synchronized (mNetworkPoliciesSecondLock) { |
| if (mNetworkPolicy.containsKey(template)) { |
| mNetworkPolicy.remove(template); |
| writePolicyAL(); |
| } |
| } |
| } |
| } |
| } |
| } |
| }; |
| |
| /** |
| * Receiver that watches {@link WifiInfo} state changes to infer metered |
| * state. Ignores hints when policy is user-defined. |
| */ |
| final private BroadcastReceiver mWifiStateReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and verified CONNECTIVITY_INTERNAL |
| // permission above. |
| |
| // ignore when not connected |
| final NetworkInfo netInfo = intent.getParcelableExtra(EXTRA_NETWORK_INFO); |
| if (!netInfo.isConnected()) return; |
| |
| final WifiInfo info = intent.getParcelableExtra(EXTRA_WIFI_INFO); |
| final boolean meteredHint = info.getMeteredHint(); |
| |
| final NetworkTemplate template = NetworkTemplate.buildTemplateWifi(info.getSSID()); |
| synchronized (mNetworkPoliciesSecondLock) { |
| NetworkPolicy policy = mNetworkPolicy.get(template); |
| if (policy == null && meteredHint) { |
| // policy doesn't exist, and AP is hinting that it's |
| // metered: create an inferred policy. |
| policy = newWifiPolicy(template, meteredHint); |
| addNetworkPolicyNL(policy); |
| |
| } else if (policy != null && policy.inferred) { |
| // policy exists, and was inferred: update its current |
| // metered state. |
| policy.metered = meteredHint; |
| |
| // since this is inferred for each wifi session, just update |
| // rules without persisting. |
| updateNetworkRulesNL(); |
| } |
| } |
| } |
| }; |
| |
| static NetworkPolicy newWifiPolicy(NetworkTemplate template, boolean metered) { |
| return new NetworkPolicy(template, CYCLE_NONE, Time.TIMEZONE_UTC, |
| WARNING_DISABLED, LIMIT_DISABLED, SNOOZE_NEVER, SNOOZE_NEVER, |
| metered, true); |
| } |
| |
| /** |
| * Observer that watches for {@link INetworkManagementService} alerts. |
| */ |
| final private INetworkManagementEventObserver mAlertObserver |
| = new BaseNetworkObserver() { |
| @Override |
| public void limitReached(String limitName, String iface) { |
| // only someone like NMS should be calling us |
| mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG); |
| |
| if (!LIMIT_GLOBAL_ALERT.equals(limitName)) { |
| mHandler.obtainMessage(MSG_LIMIT_REACHED, iface).sendToTarget(); |
| } |
| } |
| }; |
| |
| /** |
| * Check {@link NetworkPolicy} against current {@link INetworkStatsService} |
| * to show visible notifications as needed. |
| */ |
| void updateNotificationsNL() { |
| if (LOGV) Slog.v(TAG, "updateNotificationsNL()"); |
| |
| // keep track of previously active notifications |
| final ArraySet<String> beforeNotifs = new ArraySet<String>(mActiveNotifs); |
| mActiveNotifs.clear(); |
| |
| // TODO: when switching to kernel notifications, compute next future |
| // cycle boundary to recompute notifications. |
| |
| // examine stats for each active policy |
| final long currentTime = currentTimeMillis(); |
| for (int i = mNetworkPolicy.size()-1; i >= 0; i--) { |
| final NetworkPolicy policy = mNetworkPolicy.valueAt(i); |
| // ignore policies that aren't relevant to user |
| if (!isTemplateRelevant(policy.template)) continue; |
| if (!policy.hasCycle()) continue; |
| |
| final long start = computeLastCycleBoundary(currentTime, policy); |
| final long end = currentTime; |
| final long totalBytes = getTotalBytes(policy.template, start, end); |
| |
| if (policy.isOverLimit(totalBytes)) { |
| if (policy.lastLimitSnooze >= start) { |
| enqueueNotification(policy, TYPE_LIMIT_SNOOZED, totalBytes); |
| } else { |
| enqueueNotification(policy, TYPE_LIMIT, totalBytes); |
| notifyOverLimitNL(policy.template); |
| } |
| |
| } else { |
| notifyUnderLimitNL(policy.template); |
| |
| if (policy.isOverWarning(totalBytes) && policy.lastWarningSnooze < start) { |
| enqueueNotification(policy, TYPE_WARNING, totalBytes); |
| } |
| } |
| } |
| |
| // cancel stale notifications that we didn't renew above |
| for (int i = beforeNotifs.size()-1; i >= 0; i--) { |
| final String tag = beforeNotifs.valueAt(i); |
| if (!mActiveNotifs.contains(tag)) { |
| cancelNotification(tag); |
| } |
| } |
| } |
| |
| /** |
| * Test if given {@link NetworkTemplate} is relevant to user based on |
| * current device state, such as when |
| * {@link TelephonyManager#getSubscriberId()} matches. This is regardless of |
| * data connection status. |
| */ |
| private boolean isTemplateRelevant(NetworkTemplate template) { |
| if (template.isMatchRuleMobile()) { |
| final TelephonyManager tele = TelephonyManager.from(mContext); |
| final SubscriptionManager sub = SubscriptionManager.from(mContext); |
| |
| // Mobile template is relevant when any active subscriber matches |
| final int[] subIds = sub.getActiveSubscriptionIdList(); |
| for (int subId : subIds) { |
| final String subscriberId = tele.getSubscriberId(subId); |
| final NetworkIdentity probeIdent = new NetworkIdentity(TYPE_MOBILE, |
| TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false, true); |
| if (template.matches(probeIdent)) { |
| return true; |
| } |
| } |
| return false; |
| } else { |
| return true; |
| } |
| } |
| |
| /** |
| * Notify that given {@link NetworkTemplate} is over |
| * {@link NetworkPolicy#limitBytes}, potentially showing dialog to user. |
| */ |
| private void notifyOverLimitNL(NetworkTemplate template) { |
| if (!mOverLimitNotified.contains(template)) { |
| mContext.startActivity(buildNetworkOverLimitIntent(mContext.getResources(), template)); |
| mOverLimitNotified.add(template); |
| } |
| } |
| |
| private void notifyUnderLimitNL(NetworkTemplate template) { |
| mOverLimitNotified.remove(template); |
| } |
| |
| /** |
| * Build unique tag that identifies an active {@link NetworkPolicy} |
| * notification of a specific type, like {@link #TYPE_LIMIT}. |
| */ |
| private String buildNotificationTag(NetworkPolicy policy, int type) { |
| return TAG + ":" + policy.template.hashCode() + ":" + type; |
| } |
| |
| /** |
| * Show notification for combined {@link NetworkPolicy} and specific type, |
| * like {@link #TYPE_LIMIT}. Okay to call multiple times. |
| */ |
| private void enqueueNotification(NetworkPolicy policy, int type, long totalBytes) { |
| final String tag = buildNotificationTag(policy, type); |
| final Notification.Builder builder = new Notification.Builder(mContext); |
| builder.setOnlyAlertOnce(true); |
| builder.setWhen(0L); |
| builder.setColor(mContext.getColor( |
| com.android.internal.R.color.system_notification_accent_color)); |
| |
| final Resources res = mContext.getResources(); |
| switch (type) { |
| case TYPE_WARNING: { |
| final CharSequence title = res.getText(R.string.data_usage_warning_title); |
| final CharSequence body = res.getString(R.string.data_usage_warning_body); |
| |
| builder.setSmallIcon(R.drawable.stat_notify_error); |
| builder.setTicker(title); |
| builder.setContentTitle(title); |
| builder.setContentText(body); |
| builder.setDefaults(Notification.DEFAULT_ALL); |
| builder.setPriority(Notification.PRIORITY_HIGH); |
| |
| final Intent snoozeIntent = buildSnoozeWarningIntent(policy.template); |
| builder.setDeleteIntent(PendingIntent.getBroadcast( |
| mContext, 0, snoozeIntent, PendingIntent.FLAG_UPDATE_CURRENT)); |
| |
| final Intent viewIntent = buildViewDataUsageIntent(res, policy.template); |
| builder.setContentIntent(PendingIntent.getActivity( |
| mContext, 0, viewIntent, PendingIntent.FLAG_UPDATE_CURRENT)); |
| |
| break; |
| } |
| case TYPE_LIMIT: { |
| final CharSequence body = res.getText(R.string.data_usage_limit_body); |
| |
| final CharSequence title; |
| int icon = R.drawable.stat_notify_disabled_data; |
| switch (policy.template.getMatchRule()) { |
| case MATCH_MOBILE_3G_LOWER: |
| title = res.getText(R.string.data_usage_3g_limit_title); |
| break; |
| case MATCH_MOBILE_4G: |
| title = res.getText(R.string.data_usage_4g_limit_title); |
| break; |
| case MATCH_MOBILE_ALL: |
| title = res.getText(R.string.data_usage_mobile_limit_title); |
| break; |
| case MATCH_WIFI: |
| title = res.getText(R.string.data_usage_wifi_limit_title); |
| icon = R.drawable.stat_notify_error; |
| break; |
| default: |
| title = null; |
| break; |
| } |
| |
| builder.setOngoing(true); |
| builder.setSmallIcon(icon); |
| builder.setTicker(title); |
| builder.setContentTitle(title); |
| builder.setContentText(body); |
| |
| final Intent intent = buildNetworkOverLimitIntent(res, policy.template); |
| builder.setContentIntent(PendingIntent.getActivity( |
| mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)); |
| break; |
| } |
| case TYPE_LIMIT_SNOOZED: { |
| final long overBytes = totalBytes - policy.limitBytes; |
| final CharSequence body = res.getString(R.string.data_usage_limit_snoozed_body, |
| Formatter.formatFileSize(mContext, overBytes)); |
| |
| final CharSequence title; |
| switch (policy.template.getMatchRule()) { |
| case MATCH_MOBILE_3G_LOWER: |
| title = res.getText(R.string.data_usage_3g_limit_snoozed_title); |
| break; |
| case MATCH_MOBILE_4G: |
| title = res.getText(R.string.data_usage_4g_limit_snoozed_title); |
| break; |
| case MATCH_MOBILE_ALL: |
| title = res.getText(R.string.data_usage_mobile_limit_snoozed_title); |
| break; |
| case MATCH_WIFI: |
| title = res.getText(R.string.data_usage_wifi_limit_snoozed_title); |
| break; |
| default: |
| title = null; |
| break; |
| } |
| |
| builder.setOngoing(true); |
| builder.setSmallIcon(R.drawable.stat_notify_error); |
| builder.setTicker(title); |
| builder.setContentTitle(title); |
| builder.setContentText(body); |
| |
| final Intent intent = buildViewDataUsageIntent(res, policy.template); |
| builder.setContentIntent(PendingIntent.getActivity( |
| mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)); |
| break; |
| } |
| } |
| |
| // TODO: move to NotificationManager once we can mock it |
| try { |
| final String packageName = mContext.getPackageName(); |
| final int[] idReceived = new int[1]; |
| mNotifManager.enqueueNotificationWithTag( |
| packageName, packageName, tag, 0x0, builder.getNotification(), idReceived, |
| UserHandle.USER_ALL); |
| mActiveNotifs.add(tag); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| private void cancelNotification(String tag) { |
| // TODO: move to NotificationManager once we can mock it |
| try { |
| final String packageName = mContext.getPackageName(); |
| mNotifManager.cancelNotificationWithTag( |
| packageName, tag, 0x0, UserHandle.USER_ALL); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| /** |
| * Receiver that watches for {@link IConnectivityManager} to claim network |
| * interfaces. Used to apply {@link NetworkPolicy} to matching networks. |
| */ |
| private BroadcastReceiver mConnReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and verified CONNECTIVITY_INTERNAL |
| // permission above. |
| |
| maybeRefreshTrustedTime(); |
| synchronized (mNetworkPoliciesSecondLock) { |
| ensureActiveMobilePolicyNL(); |
| normalizePoliciesNL(); |
| updateNetworkEnabledNL(); |
| updateNetworkRulesNL(); |
| updateNotificationsNL(); |
| } |
| } |
| }; |
| |
| /** |
| * Proactively control network data connections when they exceed |
| * {@link NetworkPolicy#limitBytes}. |
| */ |
| void updateNetworkEnabledNL() { |
| if (LOGV) Slog.v(TAG, "updateNetworkEnabledNL()"); |
| |
| // TODO: reset any policy-disabled networks when any policy is removed |
| // completely, which is currently rare case. |
| |
| final long currentTime = currentTimeMillis(); |
| for (int i = mNetworkPolicy.size()-1; i >= 0; i--) { |
| final NetworkPolicy policy = mNetworkPolicy.valueAt(i); |
| // shortcut when policy has no limit |
| if (policy.limitBytes == LIMIT_DISABLED || !policy.hasCycle()) { |
| setNetworkTemplateEnabled(policy.template, true); |
| continue; |
| } |
| |
| final long start = computeLastCycleBoundary(currentTime, policy); |
| final long end = currentTime; |
| final long totalBytes = getTotalBytes(policy.template, start, end); |
| |
| // disable data connection when over limit and not snoozed |
| final boolean overLimitWithoutSnooze = policy.isOverLimit(totalBytes) |
| && policy.lastLimitSnooze < start; |
| final boolean networkEnabled = !overLimitWithoutSnooze; |
| |
| setNetworkTemplateEnabled(policy.template, networkEnabled); |
| } |
| } |
| |
| /** |
| * Proactively disable networks that match the given |
| * {@link NetworkTemplate}. |
| */ |
| private void setNetworkTemplateEnabled(NetworkTemplate template, boolean enabled) { |
| // TODO: reach into ConnectivityManager to proactively disable bringing |
| // up this network, since we know that traffic will be blocked. |
| |
| if (template.getMatchRule() == MATCH_MOBILE_ALL) { |
| // If mobile data usage hits the limit or if the user resumes the data, we need to |
| // notify telephony. |
| final SubscriptionManager sm = SubscriptionManager.from(mContext); |
| final TelephonyManager tm = TelephonyManager.from(mContext); |
| |
| final int[] subIds = sm.getActiveSubscriptionIdList(); |
| for (int subId : subIds) { |
| final String subscriberId = tm.getSubscriberId(subId); |
| final NetworkIdentity probeIdent = new NetworkIdentity(TYPE_MOBILE, |
| TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false, true); |
| // Template is matched when subscriber id matches. |
| if (template.matches(probeIdent)) { |
| tm.setPolicyDataEnabled(enabled, subId); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Examine all connected {@link NetworkState}, looking for |
| * {@link NetworkPolicy} that need to be enforced. When matches found, set |
| * remaining quota based on usage cycle and historical stats. |
| */ |
| void updateNetworkRulesNL() { |
| if (LOGV) Slog.v(TAG, "updateNetworkRulesNL()"); |
| |
| final NetworkState[] states; |
| try { |
| states = mConnManager.getAllNetworkState(); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| return; |
| } |
| |
| // First, generate identities of all connected networks so we can |
| // quickly compare them against all defined policies below. |
| final ArrayList<Pair<String, NetworkIdentity>> connIdents = new ArrayList<>(states.length); |
| final ArraySet<String> connIfaces = new ArraySet<String>(states.length); |
| for (NetworkState state : states) { |
| if (state.networkInfo != null && state.networkInfo.isConnected()) { |
| final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state); |
| |
| final String baseIface = state.linkProperties.getInterfaceName(); |
| if (baseIface != null) { |
| connIdents.add(Pair.create(baseIface, ident)); |
| } |
| |
| // Stacked interfaces are considered to have same identity as |
| // their parent network. |
| final List<LinkProperties> stackedLinks = state.linkProperties.getStackedLinks(); |
| for (LinkProperties stackedLink : stackedLinks) { |
| final String stackedIface = stackedLink.getInterfaceName(); |
| if (stackedIface != null) { |
| connIdents.add(Pair.create(stackedIface, ident)); |
| } |
| } |
| } |
| } |
| |
| // Apply policies against all connected interfaces found above |
| mNetworkRules.clear(); |
| final ArrayList<String> ifaceList = Lists.newArrayList(); |
| for (int i = mNetworkPolicy.size() - 1; i >= 0; i--) { |
| final NetworkPolicy policy = mNetworkPolicy.valueAt(i); |
| |
| ifaceList.clear(); |
| for (int j = connIdents.size() - 1; j >= 0; j--) { |
| final Pair<String, NetworkIdentity> ident = connIdents.get(j); |
| if (policy.template.matches(ident.second)) { |
| ifaceList.add(ident.first); |
| } |
| } |
| |
| if (ifaceList.size() > 0) { |
| final String[] ifaces = ifaceList.toArray(new String[ifaceList.size()]); |
| mNetworkRules.put(policy, ifaces); |
| } |
| } |
| |
| long lowestRule = Long.MAX_VALUE; |
| final ArraySet<String> newMeteredIfaces = new ArraySet<String>(states.length); |
| |
| // apply each policy that we found ifaces for; compute remaining data |
| // based on current cycle and historical stats, and push to kernel. |
| final long currentTime = currentTimeMillis(); |
| for (int i = mNetworkRules.size()-1; i >= 0; i--) { |
| final NetworkPolicy policy = mNetworkRules.keyAt(i); |
| final String[] ifaces = mNetworkRules.valueAt(i); |
| |
| final long start; |
| final long totalBytes; |
| if (policy.hasCycle()) { |
| start = computeLastCycleBoundary(currentTime, policy); |
| totalBytes = getTotalBytes(policy.template, start, currentTime); |
| } else { |
| start = Long.MAX_VALUE; |
| totalBytes = 0; |
| } |
| |
| if (LOGD) { |
| Slog.d(TAG, "applying policy " + policy + " to ifaces " + Arrays.toString(ifaces)); |
| } |
| |
| final boolean hasWarning = policy.warningBytes != LIMIT_DISABLED; |
| final boolean hasLimit = policy.limitBytes != LIMIT_DISABLED; |
| if (hasLimit || policy.metered) { |
| final long quotaBytes; |
| if (!hasLimit) { |
| // metered network, but no policy limit; we still need to |
| // restrict apps, so push really high quota. |
| quotaBytes = Long.MAX_VALUE; |
| } else if (policy.lastLimitSnooze >= start) { |
| // snoozing past quota, but we still need to restrict apps, |
| // so push really high quota. |
| quotaBytes = Long.MAX_VALUE; |
| } else { |
| // remaining "quota" bytes are based on total usage in |
| // current cycle. kernel doesn't like 0-byte rules, so we |
| // set 1-byte quota and disable the radio later. |
| quotaBytes = Math.max(1, policy.limitBytes - totalBytes); |
| } |
| |
| if (ifaces.length > 1) { |
| // TODO: switch to shared quota once NMS supports |
| Slog.w(TAG, "shared quota unsupported; generating rule for each iface"); |
| } |
| |
| for (String iface : ifaces) { |
| // long quotaBytes split up into two ints to fit in message |
| mHandler.obtainMessage(MSG_UPDATE_INTERFACE_QUOTA, |
| (int) (quotaBytes >> 32), (int) (quotaBytes & 0xFFFFFFFF), iface) |
| .sendToTarget(); |
| newMeteredIfaces.add(iface); |
| } |
| } |
| |
| // keep track of lowest warning or limit of active policies |
| if (hasWarning && policy.warningBytes < lowestRule) { |
| lowestRule = policy.warningBytes; |
| } |
| if (hasLimit && policy.limitBytes < lowestRule) { |
| lowestRule = policy.limitBytes; |
| } |
| } |
| |
| for (int i = connIfaces.size()-1; i >= 0; i--) { |
| String iface = connIfaces.valueAt(i); |
| // long quotaBytes split up into two ints to fit in message |
| mHandler.obtainMessage(MSG_UPDATE_INTERFACE_QUOTA, |
| (int) (Long.MAX_VALUE >> 32), (int) (Long.MAX_VALUE & 0xFFFFFFFF), iface) |
| .sendToTarget(); |
| newMeteredIfaces.add(iface); |
| } |
| |
| mHandler.obtainMessage(MSG_ADVISE_PERSIST_THRESHOLD, lowestRule).sendToTarget(); |
| |
| // remove quota on any trailing interfaces |
| for (int i = mMeteredIfaces.size() - 1; i >= 0; i--) { |
| final String iface = mMeteredIfaces.valueAt(i); |
| if (!newMeteredIfaces.contains(iface)) { |
| mHandler.obtainMessage(MSG_REMOVE_INTERFACE_QUOTA, iface) |
| .sendToTarget(); |
| } |
| } |
| mMeteredIfaces = newMeteredIfaces; |
| |
| final String[] meteredIfaces = mMeteredIfaces.toArray(new String[mMeteredIfaces.size()]); |
| mHandler.obtainMessage(MSG_METERED_IFACES_CHANGED, meteredIfaces).sendToTarget(); |
| } |
| |
| /** |
| * Once any {@link #mNetworkPolicy} are loaded from disk, ensure that we |
| * have at least a default mobile policy defined. |
| */ |
| private void ensureActiveMobilePolicyNL() { |
| if (LOGV) Slog.v(TAG, "ensureActiveMobilePolicyNL()"); |
| if (mSuppressDefaultPolicy) return; |
| |
| final TelephonyManager tele = TelephonyManager.from(mContext); |
| final SubscriptionManager sub = SubscriptionManager.from(mContext); |
| |
| final int[] subIds = sub.getActiveSubscriptionIdList(); |
| for (int subId : subIds) { |
| final String subscriberId = tele.getSubscriberId(subId); |
| ensureActiveMobilePolicyNL(subscriberId); |
| } |
| } |
| |
| private void ensureActiveMobilePolicyNL(String subscriberId) { |
| // Poke around to see if we already have a policy |
| final NetworkIdentity probeIdent = new NetworkIdentity(TYPE_MOBILE, |
| TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false, true); |
| for (int i = mNetworkPolicy.size() - 1; i >= 0; i--) { |
| final NetworkTemplate template = mNetworkPolicy.keyAt(i); |
| if (template.matches(probeIdent)) { |
| if (LOGD) { |
| Slog.d(TAG, "Found template " + template + " which matches subscriber " |
| + NetworkIdentity.scrubSubscriberId(subscriberId)); |
| } |
| return; |
| } |
| } |
| |
| Slog.i(TAG, "No policy for subscriber " + NetworkIdentity.scrubSubscriberId(subscriberId) |
| + "; generating default policy"); |
| |
| // Build default mobile policy, and assume usage cycle starts today |
| final long warningBytes = mContext.getResources().getInteger( |
| com.android.internal.R.integer.config_networkPolicyDefaultWarning) * MB_IN_BYTES; |
| |
| final Time time = new Time(); |
| time.setToNow(); |
| |
| final int cycleDay = time.monthDay; |
| final String cycleTimezone = time.timezone; |
| |
| final NetworkTemplate template = buildTemplateMobileAll(subscriberId); |
| final NetworkPolicy policy = new NetworkPolicy(template, cycleDay, cycleTimezone, |
| warningBytes, LIMIT_DISABLED, SNOOZE_NEVER, SNOOZE_NEVER, true, true); |
| addNetworkPolicyNL(policy); |
| } |
| |
| private void readPolicyAL() { |
| if (LOGV) Slog.v(TAG, "readPolicyAL()"); |
| |
| // clear any existing policy and read from disk |
| mNetworkPolicy.clear(); |
| mUidPolicy.clear(); |
| |
| FileInputStream fis = null; |
| try { |
| fis = mPolicyFile.openRead(); |
| final XmlPullParser in = Xml.newPullParser(); |
| in.setInput(fis, StandardCharsets.UTF_8.name()); |
| |
| int type; |
| int version = VERSION_INIT; |
| boolean insideWhitelist = false; |
| while ((type = in.next()) != END_DOCUMENT) { |
| final String tag = in.getName(); |
| if (type == START_TAG) { |
| if (TAG_POLICY_LIST.equals(tag)) { |
| final boolean oldValue = mRestrictBackground; |
| version = readIntAttribute(in, ATTR_VERSION); |
| if (version >= VERSION_ADDED_RESTRICT_BACKGROUND) { |
| mRestrictBackground = readBooleanAttribute( |
| in, ATTR_RESTRICT_BACKGROUND); |
| } else { |
| mRestrictBackground = false; |
| } |
| if (mRestrictBackground != oldValue) { |
| // Some early services may have read the default value, |
| // so notify them that it's changed |
| mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_CHANGED, |
| mRestrictBackground ? 1 : 0, 0).sendToTarget(); |
| } |
| |
| } else if (TAG_NETWORK_POLICY.equals(tag)) { |
| final int networkTemplate = readIntAttribute(in, ATTR_NETWORK_TEMPLATE); |
| final String subscriberId = in.getAttributeValue(null, ATTR_SUBSCRIBER_ID); |
| final String networkId; |
| if (version >= VERSION_ADDED_NETWORK_ID) { |
| networkId = in.getAttributeValue(null, ATTR_NETWORK_ID); |
| } else { |
| networkId = null; |
| } |
| final int cycleDay = readIntAttribute(in, ATTR_CYCLE_DAY); |
| final String cycleTimezone; |
| if (version >= VERSION_ADDED_TIMEZONE) { |
| cycleTimezone = in.getAttributeValue(null, ATTR_CYCLE_TIMEZONE); |
| } else { |
| cycleTimezone = Time.TIMEZONE_UTC; |
| } |
| final long warningBytes = readLongAttribute(in, ATTR_WARNING_BYTES); |
| final long limitBytes = readLongAttribute(in, ATTR_LIMIT_BYTES); |
| final long lastLimitSnooze; |
| if (version >= VERSION_SPLIT_SNOOZE) { |
| lastLimitSnooze = readLongAttribute(in, ATTR_LAST_LIMIT_SNOOZE); |
| } else if (version >= VERSION_ADDED_SNOOZE) { |
| lastLimitSnooze = readLongAttribute(in, ATTR_LAST_SNOOZE); |
| } else { |
| lastLimitSnooze = SNOOZE_NEVER; |
| } |
| final boolean metered; |
| if (version >= VERSION_ADDED_METERED) { |
| metered = readBooleanAttribute(in, ATTR_METERED); |
| } else { |
| switch (networkTemplate) { |
| case MATCH_MOBILE_3G_LOWER: |
| case MATCH_MOBILE_4G: |
| case MATCH_MOBILE_ALL: |
| metered = true; |
| break; |
| default: |
| metered = false; |
| } |
| } |
| final long lastWarningSnooze; |
| if (version >= VERSION_SPLIT_SNOOZE) { |
| lastWarningSnooze = readLongAttribute(in, ATTR_LAST_WARNING_SNOOZE); |
| } else { |
| lastWarningSnooze = SNOOZE_NEVER; |
| } |
| final boolean inferred; |
| if (version >= VERSION_ADDED_INFERRED) { |
| inferred = readBooleanAttribute(in, ATTR_INFERRED); |
| } else { |
| inferred = false; |
| } |
| |
| final NetworkTemplate template = new NetworkTemplate(networkTemplate, |
| subscriberId, networkId); |
| if (template.isPersistable()) { |
| mNetworkPolicy.put(template, new NetworkPolicy(template, cycleDay, |
| cycleTimezone, warningBytes, limitBytes, lastWarningSnooze, |
| lastLimitSnooze, metered, inferred)); |
| } |
| |
| } else if (TAG_UID_POLICY.equals(tag)) { |
| final int uid = readIntAttribute(in, ATTR_UID); |
| final int policy = readIntAttribute(in, ATTR_POLICY); |
| |
| if (UserHandle.isApp(uid)) { |
| setUidPolicyUncheckedUL(uid, policy, false); |
| } else { |
| Slog.w(TAG, "unable to apply policy to UID " + uid + "; ignoring"); |
| } |
| } else if (TAG_APP_POLICY.equals(tag)) { |
| final int appId = readIntAttribute(in, ATTR_APP_ID); |
| final int policy = readIntAttribute(in, ATTR_POLICY); |
| |
| // TODO: set for other users during upgrade |
| // app policy is deprecated so this is only used in pre system user split. |
| final int uid = UserHandle.getUid(UserHandle.USER_SYSTEM, appId); |
| if (UserHandle.isApp(uid)) { |
| setUidPolicyUncheckedUL(uid, policy, false); |
| } else { |
| Slog.w(TAG, "unable to apply policy to UID " + uid + "; ignoring"); |
| } |
| } else if (TAG_WHITELIST.equals(tag)) { |
| insideWhitelist = true; |
| } else if (TAG_RESTRICT_BACKGROUND.equals(tag) && insideWhitelist) { |
| final int uid = readIntAttribute(in, ATTR_UID); |
| mRestrictBackgroundWhitelistUids.put(uid, true); |
| } else if (TAG_REVOKED_RESTRICT_BACKGROUND.equals(tag) && insideWhitelist) { |
| final int uid = readIntAttribute(in, ATTR_UID); |
| mRestrictBackgroundWhitelistRevokedUids.put(uid, true); |
| } |
| } else if (type == END_TAG) { |
| if (TAG_WHITELIST.equals(tag)) { |
| insideWhitelist = false; |
| } |
| |
| } |
| } |
| |
| } catch (FileNotFoundException e) { |
| // missing policy is okay, probably first boot |
| upgradeLegacyBackgroundDataUL(); |
| } catch (IOException e) { |
| Log.wtf(TAG, "problem reading network policy", e); |
| } catch (XmlPullParserException e) { |
| Log.wtf(TAG, "problem reading network policy", e); |
| } finally { |
| IoUtils.closeQuietly(fis); |
| } |
| } |
| |
| /** |
| * Upgrade legacy background data flags, notifying listeners of one last |
| * change to always-true. |
| */ |
| private void upgradeLegacyBackgroundDataUL() { |
| mRestrictBackground = Settings.Secure.getInt( |
| mContext.getContentResolver(), Settings.Secure.BACKGROUND_DATA, 1) != 1; |
| |
| // kick off one last broadcast if restricted |
| if (mRestrictBackground) { |
| final Intent broadcast = new Intent( |
| ConnectivityManager.ACTION_BACKGROUND_DATA_SETTING_CHANGED); |
| mContext.sendBroadcastAsUser(broadcast, UserHandle.ALL); |
| } |
| } |
| |
| void writePolicyAL() { |
| if (LOGV) Slog.v(TAG, "writePolicyAL()"); |
| |
| FileOutputStream fos = null; |
| try { |
| fos = mPolicyFile.startWrite(); |
| |
| XmlSerializer out = new FastXmlSerializer(); |
| out.setOutput(fos, StandardCharsets.UTF_8.name()); |
| out.startDocument(null, true); |
| |
| out.startTag(null, TAG_POLICY_LIST); |
| writeIntAttribute(out, ATTR_VERSION, VERSION_LATEST); |
| writeBooleanAttribute(out, ATTR_RESTRICT_BACKGROUND, mRestrictBackground); |
| |
| // write all known network policies |
| for (int i = 0; i < mNetworkPolicy.size(); i++) { |
| final NetworkPolicy policy = mNetworkPolicy.valueAt(i); |
| final NetworkTemplate template = policy.template; |
| if (!template.isPersistable()) continue; |
| |
| out.startTag(null, TAG_NETWORK_POLICY); |
| writeIntAttribute(out, ATTR_NETWORK_TEMPLATE, template.getMatchRule()); |
| final String subscriberId = template.getSubscriberId(); |
| if (subscriberId != null) { |
| out.attribute(null, ATTR_SUBSCRIBER_ID, subscriberId); |
| } |
| final String networkId = template.getNetworkId(); |
| if (networkId != null) { |
| out.attribute(null, ATTR_NETWORK_ID, networkId); |
| } |
| writeIntAttribute(out, ATTR_CYCLE_DAY, policy.cycleDay); |
| out.attribute(null, ATTR_CYCLE_TIMEZONE, policy.cycleTimezone); |
| writeLongAttribute(out, ATTR_WARNING_BYTES, policy.warningBytes); |
| writeLongAttribute(out, ATTR_LIMIT_BYTES, policy.limitBytes); |
| writeLongAttribute(out, ATTR_LAST_WARNING_SNOOZE, policy.lastWarningSnooze); |
| writeLongAttribute(out, ATTR_LAST_LIMIT_SNOOZE, policy.lastLimitSnooze); |
| writeBooleanAttribute(out, ATTR_METERED, policy.metered); |
| writeBooleanAttribute(out, ATTR_INFERRED, policy.inferred); |
| out.endTag(null, TAG_NETWORK_POLICY); |
| } |
| |
| // write all known uid policies |
| for (int i = 0; i < mUidPolicy.size(); i++) { |
| final int uid = mUidPolicy.keyAt(i); |
| final int policy = mUidPolicy.valueAt(i); |
| |
| // skip writing empty policies |
| if (policy == POLICY_NONE) continue; |
| |
| out.startTag(null, TAG_UID_POLICY); |
| writeIntAttribute(out, ATTR_UID, uid); |
| writeIntAttribute(out, ATTR_POLICY, policy); |
| out.endTag(null, TAG_UID_POLICY); |
| } |
| |
| out.endTag(null, TAG_POLICY_LIST); |
| |
| // write all whitelists |
| out.startTag(null, TAG_WHITELIST); |
| |
| // restrict background whitelist |
| int size = mRestrictBackgroundWhitelistUids.size(); |
| for (int i = 0; i < size; i++) { |
| final int uid = mRestrictBackgroundWhitelistUids.keyAt(i); |
| out.startTag(null, TAG_RESTRICT_BACKGROUND); |
| writeIntAttribute(out, ATTR_UID, uid); |
| out.endTag(null, TAG_RESTRICT_BACKGROUND); |
| } |
| |
| // revoked restrict background whitelist |
| size = mRestrictBackgroundWhitelistRevokedUids.size(); |
| for (int i = 0; i < size; i++) { |
| final int uid = mRestrictBackgroundWhitelistRevokedUids.keyAt(i); |
| out.startTag(null, TAG_REVOKED_RESTRICT_BACKGROUND); |
| writeIntAttribute(out, ATTR_UID, uid); |
| out.endTag(null, TAG_REVOKED_RESTRICT_BACKGROUND); |
| } |
| |
| out.endTag(null, TAG_WHITELIST); |
| |
| out.endDocument(); |
| |
| mPolicyFile.finishWrite(fos); |
| } catch (IOException e) { |
| if (fos != null) { |
| mPolicyFile.failWrite(fos); |
| } |
| } |
| } |
| |
| @Override |
| public void setUidPolicy(int uid, int policy) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| if (!UserHandle.isApp(uid)) { |
| throw new IllegalArgumentException("cannot apply policy to UID " + uid); |
| } |
| synchronized (mUidRulesFirstLock) { |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| if (oldPolicy != policy) { |
| setUidPolicyUncheckedUL(uid, oldPolicy, policy, true); |
| } |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| } |
| |
| @Override |
| public void addUidPolicy(int uid, int policy) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| if (!UserHandle.isApp(uid)) { |
| throw new IllegalArgumentException("cannot apply policy to UID " + uid); |
| } |
| |
| synchronized (mUidRulesFirstLock) { |
| final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| policy |= oldPolicy; |
| if (oldPolicy != policy) { |
| setUidPolicyUncheckedUL(uid, oldPolicy, policy, true); |
| } |
| } |
| } |
| |
| @Override |
| public void removeUidPolicy(int uid, int policy) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| if (!UserHandle.isApp(uid)) { |
| throw new IllegalArgumentException("cannot apply policy to UID " + uid); |
| } |
| |
| synchronized (mUidRulesFirstLock) { |
| final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| policy = oldPolicy & ~policy; |
| if (oldPolicy != policy) { |
| setUidPolicyUncheckedUL(uid, oldPolicy, policy, true); |
| } |
| } |
| } |
| |
| private void setUidPolicyUncheckedUL(int uid, int oldPolicy, int policy, boolean persist) { |
| setUidPolicyUncheckedUL(uid, policy, persist); |
| |
| final boolean isBlacklisted = policy == POLICY_REJECT_METERED_BACKGROUND; |
| mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_BLACKLIST_CHANGED, uid, |
| isBlacklisted ? 1 : 0).sendToTarget(); |
| |
| final boolean wasBlacklisted = oldPolicy == POLICY_REJECT_METERED_BACKGROUND; |
| // Checks if app was added or removed to the blacklist. |
| if ((oldPolicy == POLICY_NONE && isBlacklisted) |
| || (wasBlacklisted && policy == POLICY_NONE)) { |
| mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_WHITELIST_CHANGED, uid, 1, null) |
| .sendToTarget(); |
| } |
| } |
| |
| private void setUidPolicyUncheckedUL(int uid, int policy, boolean persist) { |
| mUidPolicy.put(uid, policy); |
| |
| // uid policy changed, recompute rules and persist policy. |
| updateRulesForDataUsageRestrictionsUL(uid); |
| if (persist) { |
| synchronized (mNetworkPoliciesSecondLock) { |
| writePolicyAL(); |
| } |
| } |
| } |
| |
| @Override |
| public int getUidPolicy(int uid) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| synchronized (mUidRulesFirstLock) { |
| return mUidPolicy.get(uid, POLICY_NONE); |
| } |
| } |
| |
| @Override |
| public int[] getUidsWithPolicy(int policy) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| int[] uids = new int[0]; |
| synchronized (mUidRulesFirstLock) { |
| for (int i = 0; i < mUidPolicy.size(); i++) { |
| final int uid = mUidPolicy.keyAt(i); |
| final int uidPolicy = mUidPolicy.valueAt(i); |
| if (uidPolicy == policy) { |
| uids = appendInt(uids, uid); |
| } |
| } |
| } |
| return uids; |
| } |
| |
| /** |
| * Removes any persistable state associated with given {@link UserHandle}, persisting |
| * if any changes that are made. |
| */ |
| boolean removeUserStateUL(int userId, boolean writePolicy) { |
| |
| if (LOGV) Slog.v(TAG, "removeUserStateUL()"); |
| boolean changed = false; |
| |
| // Remove entries from restricted background UID whitelist |
| int[] wlUids = new int[0]; |
| for (int i = 0; i < mRestrictBackgroundWhitelistUids.size(); i++) { |
| final int uid = mRestrictBackgroundWhitelistUids.keyAt(i); |
| if (UserHandle.getUserId(uid) == userId) { |
| wlUids = appendInt(wlUids, uid); |
| } |
| } |
| |
| if (wlUids.length > 0) { |
| for (int uid : wlUids) { |
| removeRestrictBackgroundWhitelistedUidUL(uid, false, false); |
| } |
| changed = true; |
| } |
| |
| // Remove entries from revoked default restricted background UID whitelist |
| for (int i = mRestrictBackgroundWhitelistRevokedUids.size() - 1; i >= 0; i--) { |
| final int uid = mRestrictBackgroundWhitelistRevokedUids.keyAt(i); |
| if (UserHandle.getUserId(uid) == userId) { |
| mRestrictBackgroundWhitelistRevokedUids.removeAt(i); |
| changed = true; |
| } |
| } |
| |
| // Remove associated UID policies |
| int[] uids = new int[0]; |
| for (int i = 0; i < mUidPolicy.size(); i++) { |
| final int uid = mUidPolicy.keyAt(i); |
| if (UserHandle.getUserId(uid) == userId) { |
| uids = appendInt(uids, uid); |
| } |
| } |
| |
| if (uids.length > 0) { |
| for (int uid : uids) { |
| mUidPolicy.delete(uid); |
| } |
| changed = true; |
| } |
| synchronized (mNetworkPoliciesSecondLock) { |
| updateRulesForGlobalChangeAL(true); |
| if (writePolicy && changed) { |
| writePolicyAL(); |
| } |
| } |
| return changed; |
| } |
| |
| @Override |
| public void setConnectivityListener(INetworkPolicyListener listener) { |
| mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG); |
| if (mConnectivityListener != null) { |
| throw new IllegalStateException("Connectivity listener already registered"); |
| } |
| mConnectivityListener = listener; |
| } |
| |
| @Override |
| public void registerListener(INetworkPolicyListener listener) { |
| // TODO: create permission for observing network policy |
| mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG); |
| mListeners.register(listener); |
| } |
| |
| @Override |
| public void unregisterListener(INetworkPolicyListener listener) { |
| // TODO: create permission for observing network policy |
| mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG); |
| mListeners.unregister(listener); |
| } |
| |
| @Override |
| public void setNetworkPolicies(NetworkPolicy[] policies) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| maybeRefreshTrustedTime(); |
| synchronized (mUidRulesFirstLock) { |
| synchronized (mNetworkPoliciesSecondLock) { |
| normalizePoliciesNL(policies); |
| updateNetworkEnabledNL(); |
| updateNetworkRulesNL(); |
| updateNotificationsNL(); |
| writePolicyAL(); |
| } |
| } |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| void addNetworkPolicyNL(NetworkPolicy policy) { |
| NetworkPolicy[] policies = getNetworkPolicies(mContext.getOpPackageName()); |
| policies = ArrayUtils.appendElement(NetworkPolicy.class, policies, policy); |
| setNetworkPolicies(policies); |
| } |
| |
| @Override |
| public NetworkPolicy[] getNetworkPolicies(String callingPackage) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| try { |
| mContext.enforceCallingOrSelfPermission(READ_PRIVILEGED_PHONE_STATE, TAG); |
| // SKIP checking run-time OP_READ_PHONE_STATE since caller or self has PRIVILEGED |
| // permission |
| } catch (SecurityException e) { |
| mContext.enforceCallingOrSelfPermission(READ_PHONE_STATE, TAG); |
| |
| if (mAppOps.noteOp(AppOpsManager.OP_READ_PHONE_STATE, Binder.getCallingUid(), |
| callingPackage) != AppOpsManager.MODE_ALLOWED) { |
| return new NetworkPolicy[0]; |
| } |
| } |
| |
| synchronized (mNetworkPoliciesSecondLock) { |
| final int size = mNetworkPolicy.size(); |
| final NetworkPolicy[] policies = new NetworkPolicy[size]; |
| for (int i = 0; i < size; i++) { |
| policies[i] = mNetworkPolicy.valueAt(i); |
| } |
| return policies; |
| } |
| } |
| |
| private void normalizePoliciesNL() { |
| normalizePoliciesNL(getNetworkPolicies(mContext.getOpPackageName())); |
| } |
| |
| private void normalizePoliciesNL(NetworkPolicy[] policies) { |
| final TelephonyManager tele = TelephonyManager.from(mContext); |
| final String[] merged = tele.getMergedSubscriberIds(); |
| |
| mNetworkPolicy.clear(); |
| for (NetworkPolicy policy : policies) { |
| // When two normalized templates conflict, prefer the most |
| // restrictive policy |
| policy.template = NetworkTemplate.normalize(policy.template, merged); |
| final NetworkPolicy existing = mNetworkPolicy.get(policy.template); |
| if (existing == null || existing.compareTo(policy) > 0) { |
| if (existing != null) { |
| Slog.d(TAG, "Normalization replaced " + existing + " with " + policy); |
| } |
| mNetworkPolicy.put(policy.template, policy); |
| } |
| } |
| } |
| |
| @Override |
| public void snoozeLimit(NetworkTemplate template) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| performSnooze(template, TYPE_LIMIT); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| void performSnooze(NetworkTemplate template, int type) { |
| maybeRefreshTrustedTime(); |
| final long currentTime = currentTimeMillis(); |
| synchronized (mUidRulesFirstLock) { |
| synchronized (mNetworkPoliciesSecondLock) { |
| // find and snooze local policy that matches |
| final NetworkPolicy policy = mNetworkPolicy.get(template); |
| if (policy == null) { |
| throw new IllegalArgumentException("unable to find policy for " + template); |
| } |
| |
| switch (type) { |
| case TYPE_WARNING: |
| policy.lastWarningSnooze = currentTime; |
| break; |
| case TYPE_LIMIT: |
| policy.lastLimitSnooze = currentTime; |
| break; |
| default: |
| throw new IllegalArgumentException("unexpected type"); |
| } |
| |
| normalizePoliciesNL(); |
| updateNetworkEnabledNL(); |
| updateNetworkRulesNL(); |
| updateNotificationsNL(); |
| writePolicyAL(); |
| } |
| } |
| } |
| |
| @Override |
| public void onTetheringChanged(String iface, boolean tethering) { |
| // No need to enforce permission because setRestrictBackground() will do it. |
| if (LOGD) Log.d(TAG, "onTetherStateChanged(" + iface + ", " + tethering + ")"); |
| synchronized (mUidRulesFirstLock) { |
| if (mRestrictBackground && tethering) { |
| Log.d(TAG, "Tethering on (" + iface +"); disable Data Saver"); |
| setRestrictBackground(false); |
| } |
| } |
| } |
| |
| @Override |
| public void setRestrictBackground(boolean restrictBackground) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| maybeRefreshTrustedTime(); |
| synchronized (mUidRulesFirstLock) { |
| if (restrictBackground == mRestrictBackground) { |
| // Ideally, UI should never allow this scenario... |
| Slog.w(TAG, "setRestrictBackground: already " + restrictBackground); |
| return; |
| } |
| setRestrictBackgroundUL(restrictBackground); |
| } |
| |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_CHANGED, restrictBackground ? 1 : 0, 0) |
| .sendToTarget(); |
| } |
| |
| private void setRestrictBackgroundUL(boolean restrictBackground) { |
| Slog.d(TAG, "setRestrictBackgroundUL(): " + restrictBackground); |
| final boolean oldRestrictBackground = mRestrictBackground; |
| mRestrictBackground = restrictBackground; |
| // Must whitelist foreground apps before turning data saver mode on. |
| // TODO: there is no need to iterate through all apps here, just those in the foreground, |
| // so it could call AM to get the UIDs of such apps, and iterate through them instead. |
| updateRulesForAllAppsUL(TYPE_RESTRICT_BACKGROUND); |
| try { |
| if (!mNetworkManager.setDataSaverModeEnabled(mRestrictBackground)) { |
| Slog.e(TAG, "Could not change Data Saver Mode on NMS to " + mRestrictBackground); |
| mRestrictBackground = oldRestrictBackground; |
| // TODO: if it knew the foreground apps (see TODO above), it could call |
| // updateRulesForRestrictBackgroundUL() again to restore state. |
| return; |
| } |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| synchronized (mNetworkPoliciesSecondLock) { |
| updateNotificationsNL(); |
| writePolicyAL(); |
| } |
| } |
| |
| @Override |
| public void addRestrictBackgroundWhitelistedUid(int uid) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| final boolean oldStatus; |
| final boolean needFirewallRules; |
| int changed; |
| synchronized (mUidRulesFirstLock) { |
| oldStatus = mRestrictBackgroundWhitelistUids.get(uid); |
| if (oldStatus) { |
| if (LOGD) Slog.d(TAG, "uid " + uid + " is already whitelisted"); |
| return; |
| } |
| needFirewallRules = isUidValidForWhitelistRules(uid); |
| Slog.i(TAG, "adding uid " + uid + " to restrict background whitelist"); |
| mRestrictBackgroundWhitelistUids.append(uid, true); |
| if (mDefaultRestrictBackgroundWhitelistUids.get(uid) |
| && mRestrictBackgroundWhitelistRevokedUids.get(uid)) { |
| if (LOGD) Slog.d(TAG, "Removing uid " + uid |
| + " from revoked restrict background whitelist"); |
| mRestrictBackgroundWhitelistRevokedUids.delete(uid); |
| } |
| if (needFirewallRules) { |
| // Only update firewall rules if necessary... |
| updateRulesForDataUsageRestrictionsUL(uid); |
| } |
| // ...but always persists the whitelist request. |
| synchronized (mNetworkPoliciesSecondLock) { |
| writePolicyAL(); |
| } |
| changed = (mRestrictBackground && !oldStatus && needFirewallRules) ? 1 : 0; |
| } |
| mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_WHITELIST_CHANGED, uid, changed, |
| Boolean.TRUE).sendToTarget(); |
| } |
| |
| @Override |
| public void removeRestrictBackgroundWhitelistedUid(int uid) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| final boolean changed; |
| synchronized (mUidRulesFirstLock) { |
| changed = removeRestrictBackgroundWhitelistedUidUL(uid, false, true); |
| } |
| mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_WHITELIST_CHANGED, uid, changed ? 1 : 0, |
| Boolean.FALSE).sendToTarget(); |
| } |
| |
| /** |
| * Removes a uid from the restricted background whitelist, returning whether its current |
| * {@link ConnectivityManager.RestrictBackgroundStatus} changed. |
| */ |
| private boolean removeRestrictBackgroundWhitelistedUidUL(int uid, boolean uidDeleted, |
| boolean updateNow) { |
| final boolean oldStatus = mRestrictBackgroundWhitelistUids.get(uid); |
| if (!oldStatus && !uidDeleted) { |
| if (LOGD) Slog.d(TAG, "uid " + uid + " was not whitelisted before"); |
| return false; |
| } |
| final boolean needFirewallRules = uidDeleted || isUidValidForWhitelistRules(uid); |
| if (oldStatus) { |
| Slog.i(TAG, "removing uid " + uid + " from restrict background whitelist"); |
| mRestrictBackgroundWhitelistUids.delete(uid); |
| } |
| if (mDefaultRestrictBackgroundWhitelistUids.get(uid) |
| && !mRestrictBackgroundWhitelistRevokedUids.get(uid)) { |
| if (LOGD) Slog.d(TAG, "Adding uid " + uid |
| + " to revoked restrict background whitelist"); |
| mRestrictBackgroundWhitelistRevokedUids.append(uid, true); |
| } |
| if (needFirewallRules) { |
| // Only update firewall rules if necessary... |
| updateRulesForDataUsageRestrictionsUL(uid, uidDeleted); |
| } |
| if (updateNow) { |
| // ...but always persists the whitelist request. |
| synchronized (mNetworkPoliciesSecondLock) { |
| writePolicyAL(); |
| } |
| } |
| // Status only changes if Data Saver is turned on (otherwise it is DISABLED, even if the |
| // app was whitelisted before). |
| return mRestrictBackground && needFirewallRules; |
| } |
| |
| @Override |
| public int[] getRestrictBackgroundWhitelistedUids() { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| synchronized (mUidRulesFirstLock) { |
| final int size = mRestrictBackgroundWhitelistUids.size(); |
| final int[] whitelist = new int[size]; |
| for (int i = 0; i < size; i++) { |
| whitelist[i] = mRestrictBackgroundWhitelistUids.keyAt(i); |
| } |
| if (LOGV) { |
| Slog.v(TAG, "getRestrictBackgroundWhitelistedUids(): " |
| + mRestrictBackgroundWhitelistUids); |
| } |
| return whitelist; |
| } |
| } |
| |
| @Override |
| public int getRestrictBackgroundByCaller() { |
| mContext.enforceCallingOrSelfPermission(ACCESS_NETWORK_STATE, TAG); |
| final int uid = Binder.getCallingUid(); |
| |
| synchronized (mUidRulesFirstLock) { |
| // Must clear identity because getUidPolicy() is restricted to system. |
| final long token = Binder.clearCallingIdentity(); |
| final int policy; |
| try { |
| policy = getUidPolicy(uid); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| if (policy == POLICY_REJECT_METERED_BACKGROUND) { |
| // App is blacklisted. |
| return RESTRICT_BACKGROUND_STATUS_ENABLED; |
| } |
| if (!mRestrictBackground) { |
| return RESTRICT_BACKGROUND_STATUS_DISABLED; |
| } |
| return mRestrictBackgroundWhitelistUids.get(uid) |
| ? RESTRICT_BACKGROUND_STATUS_WHITELISTED |
| : RESTRICT_BACKGROUND_STATUS_ENABLED; |
| } |
| } |
| |
| @Override |
| public boolean getRestrictBackground() { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| synchronized (mUidRulesFirstLock) { |
| return mRestrictBackground; |
| } |
| } |
| |
| @Override |
| public void setDeviceIdleMode(boolean enabled) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| synchronized (mUidRulesFirstLock) { |
| if (mDeviceIdleMode != enabled) { |
| mDeviceIdleMode = enabled; |
| if (mSystemReady) { |
| // Device idle change means we need to rebuild rules for all |
| // known apps, so do a global refresh. |
| updateRulesForRestrictPowerUL(); |
| } |
| if (enabled) { |
| EventLogTags.writeDeviceIdleOnPhase("net"); |
| } else { |
| EventLogTags.writeDeviceIdleOffPhase("net"); |
| } |
| } |
| } |
| } |
| |
| private NetworkPolicy findPolicyForNetworkNL(NetworkIdentity ident) { |
| for (int i = mNetworkPolicy.size()-1; i >= 0; i--) { |
| NetworkPolicy policy = mNetworkPolicy.valueAt(i); |
| if (policy.template.matches(ident)) { |
| return policy; |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public NetworkQuotaInfo getNetworkQuotaInfo(NetworkState state) { |
| mContext.enforceCallingOrSelfPermission(ACCESS_NETWORK_STATE, TAG); |
| |
| // only returns usage summary, so we don't require caller to have |
| // READ_NETWORK_USAGE_HISTORY. |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| return getNetworkQuotaInfoUnchecked(state); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| private NetworkQuotaInfo getNetworkQuotaInfoUnchecked(NetworkState state) { |
| final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state); |
| |
| final NetworkPolicy policy; |
| synchronized (mNetworkPoliciesSecondLock) { |
| policy = findPolicyForNetworkNL(ident); |
| } |
| |
| if (policy == null || !policy.hasCycle()) { |
| // missing policy means we can't derive useful quota info |
| return null; |
| } |
| |
| final long currentTime = currentTimeMillis(); |
| |
| // find total bytes used under policy |
| final long start = computeLastCycleBoundary(currentTime, policy); |
| final long end = currentTime; |
| final long totalBytes = getTotalBytes(policy.template, start, end); |
| |
| // report soft and hard limits under policy |
| final long softLimitBytes = policy.warningBytes != WARNING_DISABLED ? policy.warningBytes |
| : NetworkQuotaInfo.NO_LIMIT; |
| final long hardLimitBytes = policy.limitBytes != LIMIT_DISABLED ? policy.limitBytes |
| : NetworkQuotaInfo.NO_LIMIT; |
| |
| return new NetworkQuotaInfo(totalBytes, softLimitBytes, hardLimitBytes); |
| } |
| |
| @Override |
| public boolean isNetworkMetered(NetworkState state) { |
| if (state.networkInfo == null) { |
| return false; |
| } |
| |
| final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state); |
| |
| final NetworkPolicy policy; |
| synchronized (mNetworkPoliciesSecondLock) { |
| policy = findPolicyForNetworkNL(ident); |
| } |
| |
| if (policy != null) { |
| return policy.metered; |
| } else { |
| final int type = state.networkInfo.getType(); |
| if ((isNetworkTypeMobile(type) && ident.getMetered()) || type == TYPE_WIMAX) { |
| return true; |
| } |
| return false; |
| } |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { |
| mContext.enforceCallingOrSelfPermission(DUMP, TAG); |
| |
| final IndentingPrintWriter fout = new IndentingPrintWriter(writer, " "); |
| |
| final ArraySet<String> argSet = new ArraySet<String>(args.length); |
| for (String arg : args) { |
| argSet.add(arg); |
| } |
| |
| synchronized (mUidRulesFirstLock) { |
| synchronized (mNetworkPoliciesSecondLock) { |
| if (argSet.contains("--unsnooze")) { |
| for (int i = mNetworkPolicy.size()-1; i >= 0; i--) { |
| mNetworkPolicy.valueAt(i).clearSnooze(); |
| } |
| |
| normalizePoliciesNL(); |
| updateNetworkEnabledNL(); |
| updateNetworkRulesNL(); |
| updateNotificationsNL(); |
| writePolicyAL(); |
| |
| fout.println("Cleared snooze timestamps"); |
| return; |
| } |
| |
| fout.print("System ready: "); fout.println(mSystemReady); |
| fout.print("Restrict background: "); fout.println(mRestrictBackground); |
| fout.print("Restrict power: "); fout.println(mRestrictPower); |
| fout.print("Device idle: "); fout.println(mDeviceIdleMode); |
| fout.println("Network policies:"); |
| fout.increaseIndent(); |
| for (int i = 0; i < mNetworkPolicy.size(); i++) { |
| fout.println(mNetworkPolicy.valueAt(i).toString()); |
| } |
| fout.decreaseIndent(); |
| |
| fout.print("Metered ifaces: "); fout.println(String.valueOf(mMeteredIfaces)); |
| |
| fout.println("Policy for UIDs:"); |
| fout.increaseIndent(); |
| int size = mUidPolicy.size(); |
| for (int i = 0; i < size; i++) { |
| final int uid = mUidPolicy.keyAt(i); |
| final int policy = mUidPolicy.valueAt(i); |
| fout.print("UID="); |
| fout.print(uid); |
| fout.print(" policy="); |
| fout.print(DebugUtils.flagsToString(NetworkPolicyManager.class, "POLICY_", policy)); |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| |
| size = mPowerSaveWhitelistExceptIdleAppIds.size(); |
| if (size > 0) { |
| fout.println("Power save whitelist (except idle) app ids:"); |
| fout.increaseIndent(); |
| for (int i = 0; i < size; i++) { |
| fout.print("UID="); |
| fout.print(mPowerSaveWhitelistExceptIdleAppIds.keyAt(i)); |
| fout.print(": "); |
| fout.print(mPowerSaveWhitelistExceptIdleAppIds.valueAt(i)); |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| } |
| |
| size = mPowerSaveWhitelistAppIds.size(); |
| if (size > 0) { |
| fout.println("Power save whitelist app ids:"); |
| fout.increaseIndent(); |
| for (int i = 0; i < size; i++) { |
| fout.print("UID="); |
| fout.print(mPowerSaveWhitelistAppIds.keyAt(i)); |
| fout.print(": "); |
| fout.print(mPowerSaveWhitelistAppIds.valueAt(i)); |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| } |
| |
| size = mRestrictBackgroundWhitelistUids.size(); |
| if (size > 0) { |
| fout.println("Restrict background whitelist uids:"); |
| fout.increaseIndent(); |
| for (int i = 0; i < size; i++) { |
| fout.print("UID="); |
| fout.print(mRestrictBackgroundWhitelistUids.keyAt(i)); |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| } |
| |
| size = mDefaultRestrictBackgroundWhitelistUids.size(); |
| if (size > 0) { |
| fout.println("Default restrict background whitelist uids:"); |
| fout.increaseIndent(); |
| for (int i = 0; i < size; i++) { |
| fout.print("UID="); |
| fout.print(mDefaultRestrictBackgroundWhitelistUids.keyAt(i)); |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| } |
| |
| size = mRestrictBackgroundWhitelistRevokedUids.size(); |
| if (size > 0) { |
| fout.println("Default restrict background whitelist uids revoked by users:"); |
| fout.increaseIndent(); |
| for (int i = 0; i < size; i++) { |
| fout.print("UID="); |
| fout.print(mRestrictBackgroundWhitelistRevokedUids.keyAt(i)); |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| } |
| |
| final SparseBooleanArray knownUids = new SparseBooleanArray(); |
| collectKeys(mUidState, knownUids); |
| collectKeys(mUidRules, knownUids); |
| |
| fout.println("Status for all known UIDs:"); |
| fout.increaseIndent(); |
| size = knownUids.size(); |
| for (int i = 0; i < size; i++) { |
| final int uid = knownUids.keyAt(i); |
| fout.print("UID="); |
| fout.print(uid); |
| |
| final int state = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY); |
| fout.print(" state="); |
| fout.print(state); |
| if (state <= ActivityManager.PROCESS_STATE_TOP) { |
| fout.print(" (fg)"); |
| } else { |
| fout.print(state <= ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE |
| ? " (fg svc)" : " (bg)"); |
| } |
| |
| final int uidRules = mUidRules.get(uid, RULE_NONE); |
| fout.print(" rules="); |
| fout.print(uidRulesToString(uidRules)); |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| |
| fout.println("Status for just UIDs with rules:"); |
| fout.increaseIndent(); |
| size = mUidRules.size(); |
| for (int i = 0; i < size; i++) { |
| final int uid = mUidRules.keyAt(i); |
| fout.print("UID="); |
| fout.print(uid); |
| final int uidRules = mUidRules.get(uid, RULE_NONE); |
| fout.print(" rules="); |
| fout.print(uidRulesToString(uidRules)); |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| } |
| } |
| } |
| |
| @Override |
| public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err, |
| String[] args, ResultReceiver resultReceiver) throws RemoteException { |
| (new NetworkPolicyManagerShellCommand(mContext, this)).exec( |
| this, in, out, err, args, resultReceiver); |
| } |
| |
| @Override |
| public boolean isUidForeground(int uid) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| synchronized (mUidRulesFirstLock) { |
| return isUidForegroundUL(uid); |
| } |
| } |
| |
| private boolean isUidForegroundUL(int uid) { |
| return isUidStateForegroundUL( |
| mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY)); |
| } |
| |
| private boolean isUidForegroundOnRestrictBackgroundUL(int uid) { |
| final int procState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY); |
| return isProcStateAllowedWhileOnRestrictBackground(procState); |
| } |
| |
| private boolean isUidForegroundOnRestrictPowerUL(int uid) { |
| final int procState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY); |
| return isProcStateAllowedWhileIdleOrPowerSaveMode(procState); |
| } |
| |
| private boolean isUidStateForegroundUL(int state) { |
| // only really in foreground when screen is also on |
| return mScreenOn && state <= ActivityManager.PROCESS_STATE_TOP; |
| } |
| |
| /** |
| * Process state of UID changed; if needed, will trigger |
| * {@link #updateRulesForDataUsageRestrictionsUL(int)} and |
| * {@link #updateRulesForPowerRestrictionsUL(int)} |
| */ |
| private void updateUidStateUL(int uid, int uidState) { |
| final int oldUidState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY); |
| if (oldUidState != uidState) { |
| // state changed, push updated rules |
| mUidState.put(uid, uidState); |
| updateRestrictBackgroundRulesOnUidStatusChangedUL(uid, oldUidState, uidState); |
| if (isProcStateAllowedWhileIdleOrPowerSaveMode(oldUidState) |
| != isProcStateAllowedWhileIdleOrPowerSaveMode(uidState) ) { |
| if (isUidIdle(uid)) { |
| updateRuleForAppIdleUL(uid); |
| } |
| if (mDeviceIdleMode) { |
| updateRuleForDeviceIdleUL(uid); |
| } |
| if (mRestrictPower) { |
| updateRuleForRestrictPowerUL(uid); |
| } |
| updateRulesForPowerRestrictionsUL(uid); |
| } |
| updateNetworkStats(uid, isUidStateForegroundUL(uidState)); |
| } |
| } |
| |
| private void removeUidStateUL(int uid) { |
| final int index = mUidState.indexOfKey(uid); |
| if (index >= 0) { |
| final int oldUidState = mUidState.valueAt(index); |
| mUidState.removeAt(index); |
| if (oldUidState != ActivityManager.PROCESS_STATE_CACHED_EMPTY) { |
| updateRestrictBackgroundRulesOnUidStatusChangedUL(uid, oldUidState, |
| ActivityManager.PROCESS_STATE_CACHED_EMPTY); |
| if (mDeviceIdleMode) { |
| updateRuleForDeviceIdleUL(uid); |
| } |
| if (mRestrictPower) { |
| updateRuleForRestrictPowerUL(uid); |
| } |
| updateRulesForPowerRestrictionsUL(uid); |
| updateNetworkStats(uid, false); |
| } |
| } |
| } |
| |
| // adjust stats accounting based on foreground status |
| private void updateNetworkStats(int uid, boolean uidForeground) { |
| try { |
| mNetworkStats.setUidForeground(uid, uidForeground); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| private void updateRestrictBackgroundRulesOnUidStatusChangedUL(int uid, int oldUidState, |
| int newUidState) { |
| final boolean oldForeground = |
| isProcStateAllowedWhileOnRestrictBackground(oldUidState); |
| final boolean newForeground = |
| isProcStateAllowedWhileOnRestrictBackground(newUidState); |
| if (oldForeground != newForeground) { |
| updateRulesForDataUsageRestrictionsUL(uid); |
| } |
| } |
| |
| private void updateScreenOn() { |
| synchronized (mUidRulesFirstLock) { |
| try { |
| mScreenOn = mPowerManager.isInteractive(); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| updateRulesForScreenUL(); |
| } |
| } |
| |
| /** |
| * Update rules that might be changed by {@link #mScreenOn} value. |
| */ |
| private void updateRulesForScreenUL() { |
| // only update rules for anyone with foreground activities |
| final int size = mUidState.size(); |
| for (int i = 0; i < size; i++) { |
| if (mUidState.valueAt(i) <= ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE) { |
| final int uid = mUidState.keyAt(i); |
| updateRestrictionRulesForUidUL(uid); |
| } |
| } |
| } |
| |
| static boolean isProcStateAllowedWhileIdleOrPowerSaveMode(int procState) { |
| return procState <= ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE; |
| } |
| |
| static boolean isProcStateAllowedWhileOnRestrictBackground(int procState) { |
| return procState <= ActivityManager.PROCESS_STATE_FOREGROUND_SERVICE; |
| } |
| |
| void updateRulesForPowerSaveUL() { |
| updateRulesForWhitelistedPowerSaveUL(mRestrictPower, FIREWALL_CHAIN_POWERSAVE, |
| mUidFirewallPowerSaveRules); |
| } |
| |
| void updateRuleForRestrictPowerUL(int uid) { |
| updateRulesForWhitelistedPowerSaveUL(uid, mRestrictPower, FIREWALL_CHAIN_POWERSAVE); |
| } |
| |
| void updateRulesForDeviceIdleUL() { |
| updateRulesForWhitelistedPowerSaveUL(mDeviceIdleMode, FIREWALL_CHAIN_DOZABLE, |
| mUidFirewallDozableRules); |
| } |
| |
| void updateRuleForDeviceIdleUL(int uid) { |
| updateRulesForWhitelistedPowerSaveUL(uid, mDeviceIdleMode, FIREWALL_CHAIN_DOZABLE); |
| } |
| |
| // NOTE: since both fw_dozable and fw_powersave uses the same map |
| // (mPowerSaveTempWhitelistAppIds) for whitelisting, we can reuse their logic in this method. |
| private void updateRulesForWhitelistedPowerSaveUL(boolean enabled, int chain, |
| SparseIntArray rules) { |
| if (enabled) { |
| // Sync the whitelists before enabling the chain. We don't care about the rules if |
| // we are disabling the chain. |
| final SparseIntArray uidRules = rules; |
| uidRules.clear(); |
| final List<UserInfo> users = mUserManager.getUsers(); |
| for (int ui = users.size() - 1; ui >= 0; ui--) { |
| UserInfo user = users.get(ui); |
| for (int i = mPowerSaveTempWhitelistAppIds.size() - 1; i >= 0; i--) { |
| if (mPowerSaveTempWhitelistAppIds.valueAt(i)) { |
| int appId = mPowerSaveTempWhitelistAppIds.keyAt(i); |
| int uid = UserHandle.getUid(user.id, appId); |
| uidRules.put(uid, FIREWALL_RULE_ALLOW); |
| } |
| } |
| for (int i = mPowerSaveWhitelistAppIds.size() - 1; i >= 0; i--) { |
| int appId = mPowerSaveWhitelistAppIds.keyAt(i); |
| int uid = UserHandle.getUid(user.id, appId); |
| uidRules.put(uid, FIREWALL_RULE_ALLOW); |
| } |
| } |
| for (int i = mUidState.size() - 1; i >= 0; i--) { |
| if (isProcStateAllowedWhileIdleOrPowerSaveMode(mUidState.valueAt(i))) { |
| uidRules.put(mUidState.keyAt(i), FIREWALL_RULE_ALLOW); |
| } |
| } |
| setUidFirewallRules(chain, uidRules); |
| } |
| |
| enableFirewallChainUL(chain, enabled); |
| } |
| |
| private boolean isWhitelistedBatterySaverUL(int uid) { |
| final int appId = UserHandle.getAppId(uid); |
| return mPowerSaveTempWhitelistAppIds.get(appId) || mPowerSaveWhitelistAppIds.get(appId); |
| } |
| |
| // NOTE: since both fw_dozable and fw_powersave uses the same map |
| // (mPowerSaveTempWhitelistAppIds) for whitelisting, we can reuse their logic in this method. |
| private void updateRulesForWhitelistedPowerSaveUL(int uid, boolean enabled, int chain) { |
| if (enabled) { |
| if (isWhitelistedBatterySaverUL(uid) |
| || isProcStateAllowedWhileIdleOrPowerSaveMode(mUidState.get(uid))) { |
| setUidFirewallRule(chain, uid, FIREWALL_RULE_ALLOW); |
| } else { |
| setUidFirewallRule(chain, uid, FIREWALL_RULE_DEFAULT); |
| } |
| } |
| } |
| |
| void updateRulesForAppIdleUL() { |
| final SparseIntArray uidRules = mUidFirewallStandbyRules; |
| uidRules.clear(); |
| |
| // Fully update the app idle firewall chain. |
| final List<UserInfo> users = mUserManager.getUsers(); |
| for (int ui = users.size() - 1; ui >= 0; ui--) { |
| UserInfo user = users.get(ui); |
| int[] idleUids = mUsageStats.getIdleUidsForUser(user.id); |
| for (int uid : idleUids) { |
| if (!mPowerSaveTempWhitelistAppIds.get(UserHandle.getAppId(uid), false)) { |
| // quick check: if this uid doesn't have INTERNET permission, it |
| // doesn't have network access anyway, so it is a waste to mess |
| // with it here. |
| if (hasInternetPermissions(uid)) { |
| uidRules.put(uid, FIREWALL_RULE_DENY); |
| } |
| } |
| } |
| } |
| |
| setUidFirewallRules(FIREWALL_CHAIN_STANDBY, uidRules); |
| } |
| |
| void updateRuleForAppIdleUL(int uid) { |
| if (!isUidValidForBlacklistRules(uid)) return; |
| |
| int appId = UserHandle.getAppId(uid); |
| if (!mPowerSaveTempWhitelistAppIds.get(appId) && isUidIdle(uid) |
| && !isUidForegroundOnRestrictPowerUL(uid)) { |
| setUidFirewallRule(FIREWALL_CHAIN_STANDBY, uid, FIREWALL_RULE_DENY); |
| } else { |
| setUidFirewallRule(FIREWALL_CHAIN_STANDBY, uid, FIREWALL_RULE_DEFAULT); |
| } |
| } |
| |
| void updateRulesForAppIdleParoleUL() { |
| boolean enableChain = !mUsageStats.isAppIdleParoleOn(); |
| enableFirewallChainUL(FIREWALL_CHAIN_STANDBY, enableChain); |
| } |
| |
| /** |
| * Update rules that might be changed by {@link #mRestrictBackground}, |
| * {@link #mRestrictPower}, or {@link #mDeviceIdleMode} value. |
| */ |
| private void updateRulesForGlobalChangeAL(boolean restrictedNetworksChanged) { |
| long start; |
| if (LOGD) start = System.currentTimeMillis(); |
| |
| updateRulesForRestrictPowerUL(); |
| updateRulesForRestrictBackgroundUL(); |
| |
| // If the set of restricted networks may have changed, re-evaluate those. |
| if (restrictedNetworksChanged) { |
| normalizePoliciesNL(); |
| updateNetworkRulesNL(); |
| } |
| if (LOGD) { |
| final long delta = System.currentTimeMillis() - start; |
| Slog.d(TAG, "updateRulesForGlobalChangeAL(" + restrictedNetworksChanged + ") took " |
| + delta + "ms"); |
| } |
| } |
| |
| private void updateRulesForRestrictPowerUL() { |
| updateRulesForDeviceIdleUL(); |
| updateRulesForAppIdleUL(); |
| updateRulesForPowerSaveUL(); |
| updateRulesForAllAppsUL(TYPE_RESTRICT_POWER); |
| } |
| |
| private void updateRulesForRestrictBackgroundUL() { |
| updateRulesForAllAppsUL(TYPE_RESTRICT_BACKGROUND); |
| } |
| |
| private static final int TYPE_RESTRICT_BACKGROUND = 1; |
| private static final int TYPE_RESTRICT_POWER = 2; |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef(flag = false, value = { |
| TYPE_RESTRICT_BACKGROUND, |
| TYPE_RESTRICT_POWER, |
| }) |
| public @interface RestrictType { |
| } |
| |
| // TODO: refactor / consolidate all those updateXyz methods, there are way too many of them... |
| private void updateRulesForAllAppsUL(@RestrictType int type) { |
| final PackageManager pm = mContext.getPackageManager(); |
| |
| // update rules for all installed applications |
| final List<UserInfo> users = mUserManager.getUsers(); |
| final List<ApplicationInfo> apps = pm.getInstalledApplications( |
| PackageManager.MATCH_UNINSTALLED_PACKAGES | PackageManager.MATCH_DISABLED_COMPONENTS |
| | PackageManager.MATCH_DIRECT_BOOT_AWARE |
| | PackageManager.MATCH_DIRECT_BOOT_UNAWARE); |
| |
| final int usersSize = users.size(); |
| final int appsSize = apps.size(); |
| for (int i = 0; i < usersSize; i++) { |
| final UserInfo user = users.get(i); |
| for (int j = 0; j < appsSize; j++) { |
| final ApplicationInfo app = apps.get(j); |
| final int uid = UserHandle.getUid(user.id, app.uid); |
| switch (type) { |
| case TYPE_RESTRICT_BACKGROUND: |
| updateRulesForDataUsageRestrictionsUL(uid); |
| break; |
| case TYPE_RESTRICT_POWER: |
| updateRulesForPowerRestrictionsUL(uid); |
| break; |
| default: |
| Slog.w(TAG, "Invalid type for updateRulesForAllApps: " + type); |
| } |
| } |
| } |
| } |
| |
| private void updateRulesForTempWhitelistChangeUL() { |
| final List<UserInfo> users = mUserManager.getUsers(); |
| for (int i = 0; i < users.size(); i++) { |
| final UserInfo user = users.get(i); |
| for (int j = mPowerSaveTempWhitelistAppIds.size() - 1; j >= 0; j--) { |
| int appId = mPowerSaveTempWhitelistAppIds.keyAt(j); |
| int uid = UserHandle.getUid(user.id, appId); |
| // Update external firewall rules. |
| updateRuleForAppIdleUL(uid); |
| updateRuleForDeviceIdleUL(uid); |
| updateRuleForRestrictPowerUL(uid); |
| // Update internal rules. |
| updateRulesForPowerRestrictionsUL(uid); |
| } |
| } |
| } |
| |
| // TODO: the MEDIA / DRM restriction might not be needed anymore, in which case both |
| // methods below could be merged into a isUidValidForRules() method. |
| private boolean isUidValidForBlacklistRules(int uid) { |
| // allow rules on specific system services, and any apps |
| if (uid == android.os.Process.MEDIA_UID || uid == android.os.Process.DRM_UID |
| || (UserHandle.isApp(uid) && hasInternetPermissions(uid))) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| private boolean isUidValidForWhitelistRules(int uid) { |
| return UserHandle.isApp(uid) && hasInternetPermissions(uid); |
| } |
| |
| private boolean isUidIdle(int uid) { |
| final String[] packages = mContext.getPackageManager().getPackagesForUid(uid); |
| final int userId = UserHandle.getUserId(uid); |
| |
| if (!ArrayUtils.isEmpty(packages)) { |
| for (String packageName : packages) { |
| if (!mUsageStats.isAppIdle(packageName, uid, userId)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Checks if an uid has INTERNET permissions. |
| * <p> |
| * Useful for the cases where the lack of network access can simplify the rules. |
| */ |
| private boolean hasInternetPermissions(int uid) { |
| try { |
| if (mIPm.checkUidPermission(Manifest.permission.INTERNET, uid) |
| != PackageManager.PERMISSION_GRANTED) { |
| return false; |
| } |
| } catch (RemoteException e) { |
| } |
| return true; |
| } |
| |
| /** |
| * Applies network rules to bandwidth and firewall controllers based on uid policy. |
| * |
| * <p>There are currently 4 types of restriction rules: |
| * <ul> |
| * <li>Doze mode |
| * <li>App idle mode |
| * <li>Battery Saver Mode (also referred as power save). |
| * <li>Data Saver Mode (The Feature Formerly Known As 'Restrict Background Data'). |
| * </ul> |
| * |
| * <p>This method changes both the external firewall rules and the internal state. |
| */ |
| private void updateRestrictionRulesForUidUL(int uid) { |
| // Methods below only changes the firewall rules for the power-related modes. |
| updateRuleForDeviceIdleUL(uid); |
| updateRuleForAppIdleUL(uid); |
| updateRuleForRestrictPowerUL(uid); |
| |
| // Update internal state for power-related modes. |
| updateRulesForPowerRestrictionsUL(uid); |
| |
| // Update firewall and internal rules for Data Saver Mode. |
| updateRulesForDataUsageRestrictionsUL(uid); |
| } |
| |
| /** |
| * Applies network rules to bandwidth controllers based on process state and user-defined |
| * restrictions (blacklist / whitelist). |
| * |
| * <p> |
| * {@code netd} defines 3 firewall chains that govern whether an app has access to metered |
| * networks: |
| * <ul> |
| * <li>@{code bw_penalty_box}: UIDs added to this chain do not have access (blacklist). |
| * <li>@{code bw_happy_box}: UIDs added to this chain have access (whitelist), unless they're |
| * also blacklisted. |
| * <li>@{code bw_data_saver}: when enabled (through {@link #setRestrictBackground(boolean)}), |
| * no UIDs other those whitelisted will have access. |
| * <ul> |
| * |
| * <p>The @{code bw_penalty_box} and @{code bw_happy_box} are primarily managed through the |
| * {@link #setUidPolicy(int, int)} and {@link #addRestrictBackgroundWhitelistedUid(int)} / |
| * {@link #removeRestrictBackgroundWhitelistedUid(int)} methods (for blacklist and whitelist |
| * respectively): these methods set the proper internal state (blacklist / whitelist), then call |
| * this ({@link #updateRulesForDataUsageRestrictionsUL(int)}) to propagate the rules to |
| * {@link INetworkManagementService}, but this method should also be called in events (like |
| * Data Saver Mode flips or UID state changes) that might affect the foreground app, since the |
| * following rules should also be applied: |
| * |
| * <ul> |
| * <li>When Data Saver mode is on, the foreground app should be temporarily added to |
| * {@code bw_happy_box} before the @{code bw_data_saver} chain is enabled. |
| * <li>If the foreground app is blacklisted by the user, it should be temporarily removed from |
| * {@code bw_penalty_box}. |
| * <li>When the app leaves foreground state, the temporary changes above should be reverted. |
| * </ul> |
| * |
| * <p>For optimization, the rules are only applied on user apps that have internet access |
| * permission, since there is no need to change the {@code iptables} rule if the app does not |
| * have permission to use the internet. |
| * |
| * <p>The {@link #mUidRules} map is used to define the transtion of states of an UID. |
| * |
| */ |
| private void updateRulesForDataUsageRestrictionsUL(int uid) { |
| updateRulesForDataUsageRestrictionsUL(uid, false); |
| } |
| |
| /** |
| * Overloaded version of {@link #updateRulesForDataUsageRestrictionsUL(int)} called when an |
| * app is removed - it ignores the UID validity check. |
| */ |
| private void updateRulesForDataUsageRestrictionsUL(int uid, boolean uidDeleted) { |
| if (!uidDeleted && !isUidValidForWhitelistRules(uid)) { |
| if (LOGD) Slog.d(TAG, "no need to update restrict data rules for uid " + uid); |
| return; |
| } |
| |
| final int uidPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| final int oldUidRules = mUidRules.get(uid, RULE_NONE); |
| final boolean isForeground = isUidForegroundOnRestrictBackgroundUL(uid); |
| |
| final boolean isBlacklisted = (uidPolicy & POLICY_REJECT_METERED_BACKGROUND) != 0; |
| final boolean isWhitelisted = mRestrictBackgroundWhitelistUids.get(uid); |
| final int oldRule = oldUidRules & MASK_METERED_NETWORKS; |
| int newRule = RULE_NONE; |
| |
| // First step: define the new rule based on user restrictions and foreground state. |
| if (isForeground) { |
| if (isBlacklisted || (mRestrictBackground && !isWhitelisted)) { |
| newRule = RULE_TEMPORARY_ALLOW_METERED; |
| } else if (isWhitelisted) { |
| newRule = RULE_ALLOW_METERED; |
| } |
| } else { |
| if (isBlacklisted) { |
| newRule = RULE_REJECT_METERED; |
| } else if (mRestrictBackground && isWhitelisted) { |
| newRule = RULE_ALLOW_METERED; |
| } |
| } |
| final int newUidRules = newRule | (oldUidRules & MASK_ALL_NETWORKS); |
| |
| if (LOGV) { |
| Log.v(TAG, "updateRuleForRestrictBackgroundUL(" + uid + ")" |
| + ": isForeground=" +isForeground |
| + ", isBlacklisted=" + isBlacklisted |
| + ", isWhitelisted=" + isWhitelisted |
| + ", oldRule=" + uidRulesToString(oldRule) |
| + ", newRule=" + uidRulesToString(newRule) |
| + ", newUidRules=" + uidRulesToString(newUidRules) |
| + ", oldUidRules=" + uidRulesToString(oldUidRules)); |
| } |
| |
| if (newUidRules == RULE_NONE) { |
| mUidRules.delete(uid); |
| } else { |
| mUidRules.put(uid, newUidRules); |
| } |
| |
| boolean changed = false; |
| |
| // Second step: apply bw changes based on change of state. |
| if (newRule != oldRule) { |
| changed = true; |
| |
| if ((newRule & RULE_TEMPORARY_ALLOW_METERED) != 0) { |
| // Temporarily whitelist foreground app, removing from blacklist if necessary |
| // (since bw_penalty_box prevails over bw_happy_box). |
| |
| setMeteredNetworkWhitelist(uid, true); |
| // TODO: if statement below is used to avoid an unnecessary call to netd / iptables, |
| // but ideally it should be just: |
| // setMeteredNetworkBlacklist(uid, isBlacklisted); |
| if (isBlacklisted) { |
| setMeteredNetworkBlacklist(uid, false); |
| } |
| } else if ((oldRule & RULE_TEMPORARY_ALLOW_METERED) != 0) { |
| // Remove temporary whitelist from app that is not on foreground anymore. |
| |
| // TODO: if statements below are used to avoid unnecessary calls to netd / iptables, |
| // but ideally they should be just: |
| // setMeteredNetworkWhitelist(uid, isWhitelisted); |
| // setMeteredNetworkBlacklist(uid, isBlacklisted); |
| if (!isWhitelisted) { |
| setMeteredNetworkWhitelist(uid, false); |
| } |
| if (isBlacklisted) { |
| setMeteredNetworkBlacklist(uid, true); |
| } |
| } else if ((newRule & RULE_REJECT_METERED) != 0 |
| || (oldRule & RULE_REJECT_METERED) != 0) { |
| // Flip state because app was explicitly added or removed to blacklist. |
| setMeteredNetworkBlacklist(uid, isBlacklisted); |
| if ((oldRule & RULE_REJECT_METERED) != 0 && isWhitelisted) { |
| // Since blacklist prevails over whitelist, we need to handle the special case |
| // where app is whitelisted and blacklisted at the same time (although such |
| // scenario should be blocked by the UI), then blacklist is removed. |
| setMeteredNetworkWhitelist(uid, isWhitelisted); |
| } |
| } else if ((newRule & RULE_ALLOW_METERED) != 0 |
| || (oldRule & RULE_ALLOW_METERED) != 0) { |
| // Flip state because app was explicitly added or removed to whitelist. |
| setMeteredNetworkWhitelist(uid, isWhitelisted); |
| } else { |
| // All scenarios should have been covered above. |
| Log.wtf(TAG, "Unexpected change of metered UID state for " + uid |
| + ": foreground=" + isForeground |
| + ", whitelisted=" + isWhitelisted |
| + ", blacklisted=" + isBlacklisted |
| + ", newRule=" + uidRulesToString(newUidRules) |
| + ", oldRule=" + uidRulesToString(oldUidRules)); |
| } |
| |
| // Dispatch changed rule to existing listeners. |
| mHandler.obtainMessage(MSG_RULES_CHANGED, uid, newUidRules).sendToTarget(); |
| } |
| } |
| |
| /** |
| * Updates the power-related part of the {@link #mUidRules} for a given map, and notify external |
| * listeners in case of change. |
| * <p> |
| * There are 3 power-related rules that affects whether an app has background access on |
| * non-metered networks, and when the condition applies and the UID is not whitelisted for power |
| * restriction, it's added to the equivalent firewall chain: |
| * <ul> |
| * <li>App is idle: {@code fw_standby} firewall chain. |
| * <li>Device is idle: {@code fw_dozable} firewall chain. |
| * <li>Battery Saver Mode is on: {@code fw_powersave} firewall chain. |
| * </ul> |
| * <p> |
| * This method updates the power-related part of the {@link #mUidRules} for a given uid based on |
| * these modes, the UID process state (foreground or not), and the UIDwhitelist state. |
| * <p> |
| * <strong>NOTE: </strong>This method does not update the firewall rules on {@code netd}. |
| */ |
| private void updateRulesForPowerRestrictionsUL(int uid) { |
| if (!isUidValidForBlacklistRules(uid)) { |
| if (LOGD) Slog.d(TAG, "no need to update restrict power rules for uid " + uid); |
| return; |
| } |
| |
| final boolean isIdle = isUidIdle(uid); |
| final boolean restrictMode = isIdle || mRestrictPower || mDeviceIdleMode; |
| final int uidPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| final int oldUidRules = mUidRules.get(uid, RULE_NONE); |
| final boolean isForeground = isUidForegroundOnRestrictPowerUL(uid); |
| |
| final boolean isWhitelisted = isWhitelistedBatterySaverUL(uid); |
| final int oldRule = oldUidRules & MASK_ALL_NETWORKS; |
| int newRule = RULE_NONE; |
| |
| // First step: define the new rule based on user restrictions and foreground state. |
| |
| // NOTE: if statements below could be inlined, but it's easier to understand the logic |
| // by considering the foreground and non-foreground states. |
| if (isForeground) { |
| if (restrictMode) { |
| newRule = RULE_ALLOW_ALL; |
| } |
| } else if (restrictMode) { |
| newRule = isWhitelisted ? RULE_ALLOW_ALL : RULE_REJECT_ALL; |
| } |
| |
| final int newUidRules = (oldUidRules & MASK_METERED_NETWORKS) | newRule; |
| |
| if (LOGV) { |
| Log.v(TAG, "updateRulesForNonMeteredNetworksUL(" + uid + ")" |
| + ", isIdle: " + isIdle |
| + ", mRestrictPower: " + mRestrictPower |
| + ", mDeviceIdleMode: " + mDeviceIdleMode |
| + ", isForeground=" + isForeground |
| + ", isWhitelisted=" + isWhitelisted |
| + ", oldRule=" + uidRulesToString(oldRule) |
| + ", newRule=" + uidRulesToString(newRule) |
| + ", newUidRules=" + uidRulesToString(newUidRules) |
| + ", oldUidRules=" + uidRulesToString(oldUidRules)); |
| } |
| |
| if (newUidRules == RULE_NONE) { |
| mUidRules.delete(uid); |
| } else { |
| mUidRules.put(uid, newUidRules); |
| } |
| |
| // Second step: notify listeners if state changed. |
| if (newRule != oldRule) { |
| if (newRule == RULE_NONE || (newRule & RULE_ALLOW_ALL) != 0) { |
| if (LOGV) Log.v(TAG, "Allowing non-metered access for UID " + uid); |
| } else if ((newRule & RULE_REJECT_ALL) != 0) { |
| if (LOGV) Log.v(TAG, "Rejecting non-metered access for UID " + uid); |
| } else { |
| // All scenarios should have been covered above |
| Log.wtf(TAG, "Unexpected change of non-metered UID state for " + uid |
| + ": foreground=" + isForeground |
| + ", whitelisted=" + isWhitelisted |
| + ", newRule=" + uidRulesToString(newUidRules) |
| + ", oldRule=" + uidRulesToString(oldUidRules)); |
| } |
| mHandler.obtainMessage(MSG_RULES_CHANGED, uid, newUidRules).sendToTarget(); |
| } |
| } |
| |
| private class AppIdleStateChangeListener |
| extends UsageStatsManagerInternal.AppIdleStateChangeListener { |
| |
| @Override |
| public void onAppIdleStateChanged(String packageName, int userId, boolean idle) { |
| try { |
| final int uid = mContext.getPackageManager().getPackageUidAsUser(packageName, |
| PackageManager.MATCH_UNINSTALLED_PACKAGES, userId); |
| if (LOGV) Log.v(TAG, "onAppIdleStateChanged(): uid=" + uid + ", idle=" + idle); |
| synchronized (mUidRulesFirstLock) { |
| updateRuleForAppIdleUL(uid); |
| updateRulesForPowerRestrictionsUL(uid); |
| } |
| } catch (NameNotFoundException nnfe) { |
| } |
| } |
| |
| @Override |
| public void onParoleStateChanged(boolean isParoleOn) { |
| synchronized (mUidRulesFirstLock) { |
| updateRulesForAppIdleParoleUL(); |
| } |
| } |
| } |
| |
| private void dispatchUidRulesChanged(INetworkPolicyListener listener, int uid, int uidRules) { |
| if (listener != null) { |
| try { |
| listener.onUidRulesChanged(uid, uidRules); |
| } catch (RemoteException ignored) { |
| } |
| } |
| } |
| |
| private void dispatchMeteredIfacesChanged(INetworkPolicyListener listener, |
| String[] meteredIfaces) { |
| if (listener != null) { |
| try { |
| listener.onMeteredIfacesChanged(meteredIfaces); |
| } catch (RemoteException ignored) { |
| } |
| } |
| } |
| |
| private void dispatchRestrictBackgroundChanged(INetworkPolicyListener listener, |
| boolean restrictBackground) { |
| if (listener != null) { |
| try { |
| listener.onRestrictBackgroundChanged(restrictBackground); |
| } catch (RemoteException ignored) { |
| } |
| } |
| } |
| |
| private void dispatchRestrictBackgroundWhitelistChanged(INetworkPolicyListener listener, |
| int uid, boolean whitelisted) { |
| if (listener != null) { |
| try { |
| listener.onRestrictBackgroundWhitelistChanged(uid, whitelisted); |
| } catch (RemoteException ignored) { |
| } |
| } |
| } |
| |
| private void dispatchRestrictBackgroundBlacklistChanged(INetworkPolicyListener listener, |
| int uid, boolean blacklisted) { |
| if (listener != null) { |
| try { |
| listener.onRestrictBackgroundBlacklistChanged(uid, blacklisted); |
| } catch (RemoteException ignored) { |
| } |
| } |
| } |
| |
| private Handler.Callback mHandlerCallback = new Handler.Callback() { |
| @Override |
| public boolean handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_RULES_CHANGED: { |
| final int uid = msg.arg1; |
| final int uidRules = msg.arg2; |
| dispatchUidRulesChanged(mConnectivityListener, uid, uidRules); |
| final int length = mListeners.beginBroadcast(); |
| for (int i = 0; i < length; i++) { |
| final INetworkPolicyListener listener = mListeners.getBroadcastItem(i); |
| dispatchUidRulesChanged(listener, uid, uidRules); |
| } |
| mListeners.finishBroadcast(); |
| return true; |
| } |
| case MSG_METERED_IFACES_CHANGED: { |
| final String[] meteredIfaces = (String[]) msg.obj; |
| dispatchMeteredIfacesChanged(mConnectivityListener, meteredIfaces); |
| final int length = mListeners.beginBroadcast(); |
| for (int i = 0; i < length; i++) { |
| final INetworkPolicyListener listener = mListeners.getBroadcastItem(i); |
| dispatchMeteredIfacesChanged(listener, meteredIfaces); |
| } |
| mListeners.finishBroadcast(); |
| return true; |
| } |
| case MSG_LIMIT_REACHED: { |
| final String iface = (String) msg.obj; |
| |
| maybeRefreshTrustedTime(); |
| synchronized (mNetworkPoliciesSecondLock) { |
| if (mMeteredIfaces.contains(iface)) { |
| try { |
| // force stats update to make sure we have |
| // numbers that caused alert to trigger. |
| mNetworkStats.forceUpdate(); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| |
| updateNetworkEnabledNL(); |
| updateNotificationsNL(); |
| } |
| } |
| return true; |
| } |
| case MSG_RESTRICT_BACKGROUND_CHANGED: { |
| final boolean restrictBackground = msg.arg1 != 0; |
| dispatchRestrictBackgroundChanged(mConnectivityListener, restrictBackground); |
| final int length = mListeners.beginBroadcast(); |
| for (int i = 0; i < length; i++) { |
| final INetworkPolicyListener listener = mListeners.getBroadcastItem(i); |
| dispatchRestrictBackgroundChanged(listener, restrictBackground); |
| } |
| mListeners.finishBroadcast(); |
| final Intent intent = |
| new Intent(ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED); |
| intent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| mContext.sendBroadcastAsUser(intent, UserHandle.ALL); |
| return true; |
| } |
| case MSG_RESTRICT_BACKGROUND_WHITELIST_CHANGED: { |
| // MSG_RESTRICT_BACKGROUND_WHITELIST_CHANGED can be called in 2 occasions: |
| // - when an app is whitelisted |
| // - when an app is blacklisted |
| // |
| // Whether the internal listeners (INetworkPolicyListener implementations) or |
| // app broadcast receivers are notified depend on the following rules: |
| // |
| // - App receivers are only notified when the app status changed (msg.arg2 = 1) |
| // - Listeners are only notified when app was whitelisted (msg.obj is not null), |
| // since blacklist notifications are handled through MSG_RULES_CHANGED). |
| final int uid = msg.arg1; |
| final boolean changed = msg.arg2 == 1; |
| final Boolean whitelisted = (Boolean) msg.obj; |
| |
| // First notify internal listeners... |
| if (whitelisted != null) { |
| final boolean whitelistedBool = whitelisted.booleanValue(); |
| dispatchRestrictBackgroundWhitelistChanged(mConnectivityListener, uid, |
| whitelistedBool); |
| final int length = mListeners.beginBroadcast(); |
| for (int i = 0; i < length; i++) { |
| final INetworkPolicyListener listener = mListeners.getBroadcastItem(i); |
| dispatchRestrictBackgroundWhitelistChanged(listener, uid, |
| whitelistedBool); |
| } |
| mListeners.finishBroadcast(); |
| } |
| final PackageManager pm = mContext.getPackageManager(); |
| final String[] packages = pm.getPackagesForUid(uid); |
| if (changed && packages != null) { |
| // ...then notify apps listening to ACTION_RESTRICT_BACKGROUND_CHANGED |
| final int userId = UserHandle.getUserId(uid); |
| for (String packageName : packages) { |
| final Intent intent = new Intent( |
| ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED); |
| intent.setPackage(packageName); |
| intent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| mContext.sendBroadcastAsUser(intent, UserHandle.of(userId)); |
| } |
| } |
| return true; |
| } |
| case MSG_RESTRICT_BACKGROUND_BLACKLIST_CHANGED: { |
| final int uid = msg.arg1; |
| final boolean blacklisted = msg.arg2 == 1; |
| |
| dispatchRestrictBackgroundBlacklistChanged(mConnectivityListener, uid, |
| blacklisted); |
| final int length = mListeners.beginBroadcast(); |
| for (int i = 0; i < length; i++) { |
| final INetworkPolicyListener listener = mListeners.getBroadcastItem(i); |
| dispatchRestrictBackgroundBlacklistChanged(listener, uid, |
| blacklisted); |
| } |
| mListeners.finishBroadcast(); |
| return true; |
| } |
| case MSG_ADVISE_PERSIST_THRESHOLD: { |
| final long lowestRule = (Long) msg.obj; |
| try { |
| // make sure stats are recorded frequently enough; we aim |
| // for 2MB threshold for 2GB/month rules. |
| final long persistThreshold = lowestRule / 1000; |
| mNetworkStats.advisePersistThreshold(persistThreshold); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| return true; |
| } |
| case MSG_SCREEN_ON_CHANGED: { |
| updateScreenOn(); |
| return true; |
| } |
| case MSG_UPDATE_INTERFACE_QUOTA: { |
| removeInterfaceQuota((String) msg.obj); |
| // int params need to be stitched back into a long |
| setInterfaceQuota((String) msg.obj, |
| ((long) msg.arg1 << 32) | (msg.arg2 & 0xFFFFFFFFL)); |
| return true; |
| } |
| case MSG_REMOVE_INTERFACE_QUOTA: { |
| removeInterfaceQuota((String) msg.obj); |
| return true; |
| } |
| default: { |
| return false; |
| } |
| } |
| } |
| }; |
| |
| private void setInterfaceQuota(String iface, long quotaBytes) { |
| try { |
| mNetworkManager.setInterfaceQuota(iface, quotaBytes); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem setting interface quota", e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| private void removeInterfaceQuota(String iface) { |
| try { |
| mNetworkManager.removeInterfaceQuota(iface); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem removing interface quota", e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| private void setMeteredNetworkBlacklist(int uid, boolean enable) { |
| if (LOGV) Slog.v(TAG, "setMeteredNetworkBlacklist " + uid + ": " + enable); |
| try { |
| mNetworkManager.setUidMeteredNetworkBlacklist(uid, enable); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem setting blacklist (" + enable + ") rules for " + uid, e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| private void setMeteredNetworkWhitelist(int uid, boolean enable) { |
| if (LOGV) Slog.v(TAG, "setMeteredNetworkWhitelist " + uid + ": " + enable); |
| try { |
| mNetworkManager.setUidMeteredNetworkWhitelist(uid, enable); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem setting whitelist (" + enable + ") rules for " + uid, e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| /** |
| * Set uid rules on a particular firewall chain. This is going to synchronize the rules given |
| * here to netd. It will clean up dead rules and make sure the target chain only contains rules |
| * specified here. |
| */ |
| private void setUidFirewallRules(int chain, SparseIntArray uidRules) { |
| try { |
| int size = uidRules.size(); |
| int[] uids = new int[size]; |
| int[] rules = new int[size]; |
| for(int index = size - 1; index >= 0; --index) { |
| uids[index] = uidRules.keyAt(index); |
| rules[index] = uidRules.valueAt(index); |
| } |
| mNetworkManager.setFirewallUidRules(chain, uids, rules); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem setting firewall uid rules", e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| /** |
| * Add or remove a uid to the firewall blacklist for all network ifaces. |
| */ |
| private void setUidFirewallRule(int chain, int uid, int rule) { |
| if (chain == FIREWALL_CHAIN_DOZABLE) { |
| mUidFirewallDozableRules.put(uid, rule); |
| } else if (chain == FIREWALL_CHAIN_STANDBY) { |
| mUidFirewallStandbyRules.put(uid, rule); |
| } else if (chain == FIREWALL_CHAIN_POWERSAVE) { |
| mUidFirewallPowerSaveRules.put(uid, rule); |
| } |
| |
| try { |
| mNetworkManager.setFirewallUidRule(chain, uid, rule); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem setting firewall uid rules", e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| /** |
| * Add or remove a uid to the firewall blacklist for all network ifaces. |
| */ |
| private void enableFirewallChainUL(int chain, boolean enable) { |
| if (mFirewallChainStates.indexOfKey(chain) >= 0 && |
| mFirewallChainStates.get(chain) == enable) { |
| // All is the same, nothing to do. |
| return; |
| } |
| mFirewallChainStates.put(chain, enable); |
| try { |
| mNetworkManager.setFirewallChainEnabled(chain, enable); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem enable firewall chain", e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| private long getTotalBytes(NetworkTemplate template, long start, long end) { |
| try { |
| return mNetworkStats.getNetworkTotalBytes(template, start, end); |
| } catch (RuntimeException e) { |
| Slog.w(TAG, "problem reading network stats: " + e); |
| return 0; |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| return 0; |
| } |
| } |
| |
| private boolean isBandwidthControlEnabled() { |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| return mNetworkManager.isBandwidthControlEnabled(); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| return false; |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| /** |
| * Try refreshing {@link #mTime} when stale. |
| */ |
| void maybeRefreshTrustedTime() { |
| if (mTime.getCacheAge() > TIME_CACHE_MAX_AGE) { |
| mTime.forceRefresh(); |
| } |
| } |
| |
| private long currentTimeMillis() { |
| return mTime.hasCache() ? mTime.currentTimeMillis() : System.currentTimeMillis(); |
| } |
| |
| private static Intent buildAllowBackgroundDataIntent() { |
| return new Intent(ACTION_ALLOW_BACKGROUND); |
| } |
| |
| private static Intent buildSnoozeWarningIntent(NetworkTemplate template) { |
| final Intent intent = new Intent(ACTION_SNOOZE_WARNING); |
| intent.putExtra(EXTRA_NETWORK_TEMPLATE, template); |
| return intent; |
| } |
| |
| private static Intent buildNetworkOverLimitIntent(Resources res, NetworkTemplate template) { |
| final Intent intent = new Intent(); |
| intent.setComponent(ComponentName.unflattenFromString( |
| res.getString(R.string.config_networkOverLimitComponent))); |
| intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| intent.putExtra(EXTRA_NETWORK_TEMPLATE, template); |
| return intent; |
| } |
| |
| private static Intent buildViewDataUsageIntent(Resources res, NetworkTemplate template) { |
| final Intent intent = new Intent(); |
| intent.setComponent(ComponentName.unflattenFromString( |
| res.getString(R.string.config_dataUsageSummaryComponent))); |
| intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| intent.putExtra(EXTRA_NETWORK_TEMPLATE, template); |
| return intent; |
| } |
| |
| @VisibleForTesting |
| public void addIdleHandler(IdleHandler handler) { |
| mHandler.getLooper().getQueue().addIdleHandler(handler); |
| } |
| |
| private static void collectKeys(SparseIntArray source, SparseBooleanArray target) { |
| final int size = source.size(); |
| for (int i = 0; i < size; i++) { |
| target.put(source.keyAt(i), true); |
| } |
| } |
| |
| @Override |
| public void factoryReset(String subscriber) { |
| mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG); |
| |
| if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { |
| return; |
| } |
| |
| // Turn mobile data limit off |
| NetworkPolicy[] policies = getNetworkPolicies(mContext.getOpPackageName()); |
| NetworkTemplate template = NetworkTemplate.buildTemplateMobileAll(subscriber); |
| for (NetworkPolicy policy : policies) { |
| if (policy.template.equals(template)) { |
| policy.limitBytes = NetworkPolicy.LIMIT_DISABLED; |
| policy.inferred = false; |
| policy.clearSnooze(); |
| } |
| } |
| setNetworkPolicies(policies); |
| |
| // Turn restrict background data off |
| setRestrictBackground(false); |
| |
| if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_APPS_CONTROL)) { |
| // Remove app's "restrict background data" flag |
| for (int uid : getUidsWithPolicy(POLICY_REJECT_METERED_BACKGROUND)) { |
| setUidPolicy(uid, POLICY_NONE); |
| } |
| } |
| } |
| |
| private class MyPackageMonitor extends PackageMonitor { |
| |
| @Override |
| public void onPackageRemoved(String packageName, int uid) { |
| if (LOGV) Slog.v(TAG, "onPackageRemoved: " + packageName + " ->" + uid); |
| synchronized (mUidRulesFirstLock) { |
| removeRestrictBackgroundWhitelistedUidUL(uid, true, true); |
| updateRestrictionRulesForUidUL(uid); |
| } |
| } |
| } |
| |
| private class NetworkPolicyManagerInternalImpl extends NetworkPolicyManagerInternal { |
| |
| @Override |
| public void resetUserState(int userId) { |
| synchronized (mUidRulesFirstLock) { |
| boolean changed = removeUserStateUL(userId, false); |
| changed = addDefaultRestrictBackgroundWhitelistUidsUL(userId) || changed; |
| if (changed) { |
| synchronized (mNetworkPoliciesSecondLock) { |
| writePolicyAL(); |
| } |
| } |
| } |
| } |
| } |
| } |