| /* |
| * 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.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_IMMEDIATE; |
| import static android.net.ConnectivityManager.TYPE_ETHERNET; |
| import static android.net.ConnectivityManager.TYPE_MOBILE; |
| import static android.net.ConnectivityManager.TYPE_WIFI; |
| 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.POLICY_ALLOW_BACKGROUND_BATTERY_SAVE; |
| 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_REJECT_METERED; |
| import static android.net.NetworkPolicyManager.computeLastCycleBoundary; |
| import static android.net.NetworkPolicyManager.dumpPolicy; |
| import static android.net.NetworkPolicyManager.dumpRules; |
| import static android.net.NetworkTemplate.MATCH_ETHERNET; |
| 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.telephony.TelephonyManager.SIM_STATE_READY; |
| 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.START_TAG; |
| |
| import android.app.ActivityManager; |
| import android.app.IActivityManager; |
| import android.app.INotificationManager; |
| import android.app.IProcessObserver; |
| import android.app.Notification; |
| import android.app.PendingIntent; |
| 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.PackageManager; |
| 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.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.INetworkManagementService; |
| import android.os.IPowerManager; |
| import android.os.Message; |
| import android.os.MessageQueue.IdleHandler; |
| import android.os.PowerManagerInternal; |
| import android.os.RemoteCallbackList; |
| import android.os.RemoteException; |
| import android.os.UserHandle; |
| import android.os.UserManager; |
| import android.provider.Settings; |
| 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.Log; |
| import android.util.NtpTrustedTime; |
| import android.util.Pair; |
| import android.util.Slog; |
| import android.util.SparseArray; |
| 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.VisibleForTesting; |
| import com.android.internal.util.FastXmlSerializer; |
| import com.android.internal.util.IndentingPrintWriter; |
| import com.android.server.LocalServices; |
| import com.android.server.SystemConfig; |
| import com.google.android.collect.Lists; |
| |
| import libcore.io.IoUtils; |
| |
| 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.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Objects; |
| |
| /** |
| * 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. |
| */ |
| public class NetworkPolicyManagerService extends INetworkPolicyManager.Stub { |
| private 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 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 TAG_ALLOW_BACKGROUND = TAG + ":allowBackground"; |
| |
| 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 final Context mContext; |
| private final IActivityManager mActivityManager; |
| private final IPowerManager mPowerManager; |
| private final INetworkStatsService mNetworkStats; |
| private final INetworkManagementService mNetworkManager; |
| private final TrustedTime mTime; |
| |
| private IConnectivityManager mConnManager; |
| private INotificationManager mNotifManager; |
| private PowerManagerInternal mPowerManagerInternal; |
| |
| final Object mRulesLock = new Object(); |
| |
| volatile boolean mScreenOn; |
| volatile boolean mRestrictBackground; |
| volatile boolean mRestrictPower; |
| |
| private final boolean mSuppressDefaultPolicy; |
| |
| /** Defined network policies. */ |
| final ArrayMap<NetworkTemplate, NetworkPolicy> mNetworkPolicy = new ArrayMap< |
| NetworkTemplate, NetworkPolicy>(); |
| /** Currently active network rules for ifaces. */ |
| private final ArrayMap<NetworkPolicy, String[]> mNetworkRules = new ArrayMap< |
| NetworkPolicy, String[]>(); |
| |
| /** Defined UID policies. */ |
| final SparseIntArray mUidPolicy = new SparseIntArray(); |
| /** Currently derived rules for each UID. */ |
| private final SparseIntArray mUidRules = new SparseIntArray(); |
| |
| /** UIDs that have been white-listed to always be able to have network access in |
| * power save mode. */ |
| private final SparseBooleanArray mPowerSaveWhitelistAppIds = new SparseBooleanArray(); |
| |
| /** Set of ifaces that are metered. */ |
| private ArraySet<String> mMeteredIfaces = new ArraySet<String>(); |
| /** Set of over-limit templates that have been notified. */ |
| private final ArraySet<NetworkTemplate> mOverLimitNotified = new ArraySet<NetworkTemplate>(); |
| |
| /** Set of currently active {@link Notification} tags. */ |
| private final ArraySet<String> mActiveNotifs = new ArraySet<String>(); |
| |
| /** Foreground at both UID and PID granularity. */ |
| private final SparseIntArray mUidState = new SparseIntArray(); |
| final SparseArray<SparseIntArray> mUidPidState = new SparseArray<SparseIntArray>(); |
| |
| /** The current maximum process state that we are considering to be foreground. */ |
| private int mCurForegroundState = ActivityManager.PROCESS_STATE_TOP; |
| |
| private final RemoteCallbackList<INetworkPolicyListener> mListeners = new RemoteCallbackList< |
| INetworkPolicyListener>(); |
| |
| final Handler mHandler; |
| |
| private final AtomicFile mPolicyFile; |
| |
| // 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"); |
| mTime = checkNotNull(time, "missing TrustedTime"); |
| |
| HandlerThread thread = new HandlerThread(TAG); |
| thread.start(); |
| mHandler = new Handler(thread.getLooper(), mHandlerCallback); |
| |
| mSuppressDefaultPolicy = suppressDefaultPolicy; |
| |
| mPolicyFile = new AtomicFile(new File(systemDir, "netpolicy.xml")); |
| } |
| |
| public void bindConnectivityManager(IConnectivityManager connManager) { |
| mConnManager = checkNotNull(connManager, "missing IConnectivityManager"); |
| } |
| |
| public void bindNotificationManager(INotificationManager notifManager) { |
| mNotifManager = checkNotNull(notifManager, "missing INotificationManager"); |
| } |
| |
| public void systemReady() { |
| if (!isBandwidthControlEnabled()) { |
| Slog.w(TAG, "bandwidth controls disabled, unable to enforce policy"); |
| return; |
| } |
| |
| final PackageManager pm = mContext.getPackageManager(); |
| |
| synchronized (mRulesLock) { |
| SystemConfig sysConfig = SystemConfig.getInstance(); |
| ArraySet<String> allowPower = sysConfig.getAllowInPowerSave(); |
| for (int i=0; i<allowPower.size(); i++) { |
| String pkg = allowPower.valueAt(i); |
| try { |
| ApplicationInfo ai = pm.getApplicationInfo(pkg, 0); |
| if ((ai.flags&ApplicationInfo.FLAG_SYSTEM) != 0) { |
| mPowerSaveWhitelistAppIds.put(UserHandle.getAppId(ai.uid), true); |
| } |
| } catch (PackageManager.NameNotFoundException e) { |
| } |
| } |
| |
| mPowerManagerInternal = LocalServices.getService(PowerManagerInternal.class); |
| mPowerManagerInternal.registerLowPowerModeObserver( |
| new PowerManagerInternal.LowPowerModeListener() { |
| @Override |
| public void onLowPowerModeChanged(boolean enabled) { |
| synchronized (mRulesLock) { |
| if (mRestrictPower != enabled) { |
| mRestrictPower = enabled; |
| updateRulesForGlobalChangeLocked(true); |
| } |
| } |
| } |
| }); |
| mRestrictPower = mPowerManagerInternal.getLowPowerModeEnabled(); |
| |
| // read policy from disk |
| readPolicyLocked(); |
| |
| if (mRestrictBackground || mRestrictPower) { |
| updateRulesForGlobalChangeLocked(true); |
| updateNotificationsLocked(); |
| } |
| } |
| |
| updateScreenOn(); |
| |
| try { |
| mActivityManager.registerProcessObserver(mProcessObserver); |
| 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); |
| |
| // watch for network interfaces to be claimed |
| final IntentFilter connFilter = new IntentFilter(CONNECTIVITY_ACTION_IMMEDIATE); |
| 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, CONNECTIVITY_INTERNAL, mHandler); |
| |
| // listen for wifi state changes to catch metered hint |
| final IntentFilter wifiStateFilter = new IntentFilter( |
| WifiManager.NETWORK_STATE_CHANGED_ACTION); |
| mContext.registerReceiver( |
| mWifiStateReceiver, wifiStateFilter, CONNECTIVITY_INTERNAL, mHandler); |
| |
| } |
| |
| private IProcessObserver mProcessObserver = new IProcessObserver.Stub() { |
| @Override |
| public void onForegroundActivitiesChanged(int pid, int uid, boolean foregroundActivities) { |
| } |
| |
| @Override |
| public void onProcessStateChanged(int pid, int uid, int procState) { |
| synchronized (mRulesLock) { |
| // because a uid can have multiple pids running inside, we need to |
| // remember all pid states and summarize foreground at uid level. |
| |
| // record foreground for this specific pid |
| SparseIntArray pidState = mUidPidState.get(uid); |
| if (pidState == null) { |
| pidState = new SparseIntArray(2); |
| mUidPidState.put(uid, pidState); |
| } |
| pidState.put(pid, procState); |
| computeUidStateLocked(uid); |
| } |
| } |
| |
| @Override |
| public void onProcessDied(int pid, int uid) { |
| synchronized (mRulesLock) { |
| // clear records and recompute, when they exist |
| final SparseIntArray pidState = mUidPidState.get(uid); |
| if (pidState != null) { |
| pidState.delete(pid); |
| if (pidState.size() <= 0) { |
| mUidPidState.remove(uid); |
| } |
| computeUidStateLocked(uid); |
| } |
| } |
| } |
| }; |
| |
| 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(); |
| } |
| }; |
| |
| 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 (mRulesLock) { |
| updateRulesForUidLocked(uid); |
| } |
| } |
| } |
| }; |
| |
| 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 (mRulesLock) { |
| mUidPolicy.delete(uid); |
| updateRulesForUidLocked(uid); |
| writePolicyLocked(); |
| } |
| } |
| }; |
| |
| 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; |
| |
| synchronized (mRulesLock) { |
| // Remove any policies for given user; both cleaning up after a |
| // USER_REMOVED, and one last sanity check during USER_ADDED |
| removePoliciesForUserLocked(userId); |
| // Update global restrict for new user |
| updateRulesForGlobalChangeLocked(true); |
| } |
| } |
| }; |
| |
| /** |
| * Receiver that watches for {@link INetworkStatsService} updates, which we |
| * use to check against {@link NetworkPolicy#warningBytes}. |
| */ |
| 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 (mRulesLock) { |
| updateNetworkEnabledLocked(); |
| updateNotificationsLocked(); |
| } |
| } |
| }; |
| |
| /** |
| * Receiver that watches for {@link Notification} control of |
| * {@link #mRestrictBackground}. |
| */ |
| 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}. |
| */ |
| 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. |
| */ |
| 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 (mRulesLock) { |
| if (mNetworkPolicy.containsKey(template)) { |
| mNetworkPolicy.remove(template); |
| writePolicyLocked(); |
| } |
| } |
| } |
| } |
| } |
| }; |
| |
| /** |
| * Receiver that watches {@link WifiInfo} state changes to infer metered |
| * state. Ignores hints when policy is user-defined. |
| */ |
| 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 (mRulesLock) { |
| 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 = new NetworkPolicy(template, CYCLE_NONE, Time.TIMEZONE_UTC, |
| WARNING_DISABLED, LIMIT_DISABLED, SNOOZE_NEVER, SNOOZE_NEVER, |
| meteredHint, true); |
| addNetworkPolicyLocked(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. |
| updateNetworkRulesLocked(); |
| } |
| } |
| } |
| }; |
| |
| /** |
| * Observer that watches for {@link INetworkManagementService} alerts. |
| */ |
| 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 updateNotificationsLocked() { |
| if (LOGV) Slog.v(TAG, "updateNotificationsLocked()"); |
| |
| // 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); |
| notifyOverLimitLocked(policy.template); |
| } |
| |
| } else { |
| notifyUnderLimitLocked(policy.template); |
| |
| if (policy.isOverWarning(totalBytes) && policy.lastWarningSnooze < start) { |
| enqueueNotification(policy, TYPE_WARNING, totalBytes); |
| } |
| } |
| } |
| |
| // ongoing notification when restricting background data |
| if (mRestrictBackground) { |
| enqueueRestrictedNotification(TAG_ALLOW_BACKGROUND); |
| } |
| |
| // 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) { |
| final TelephonyManager tele = TelephonyManager.from(mContext); |
| |
| switch (template.getMatchRule()) { |
| case MATCH_MOBILE_3G_LOWER: |
| case MATCH_MOBILE_4G: |
| case MATCH_MOBILE_ALL: |
| // mobile templates are relevant when SIM is ready and |
| // subscriberId matches. |
| if (tele.getSimState() == SIM_STATE_READY) { |
| return Objects.equals(tele.getSubscriberId(), template.getSubscriberId()); |
| } else { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Notify that given {@link NetworkTemplate} is over |
| * {@link NetworkPolicy#limitBytes}, potentially showing dialog to user. |
| */ |
| private void notifyOverLimitLocked(NetworkTemplate template) { |
| if (!mOverLimitNotified.contains(template)) { |
| mContext.startActivity(buildNetworkOverLimitIntent(template)); |
| mOverLimitNotified.add(template); |
| } |
| } |
| |
| private void notifyUnderLimitLocked(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.getResources().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); |
| |
| final Intent snoozeIntent = buildSnoozeWarningIntent(policy.template); |
| builder.setDeleteIntent(PendingIntent.getBroadcast( |
| mContext, 0, snoozeIntent, PendingIntent.FLAG_UPDATE_CURRENT)); |
| |
| final Intent viewIntent = buildViewDataUsageIntent(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(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(policy.template); |
| builder.setContentIntent(PendingIntent.getActivity( |
| mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)); |
| break; |
| } |
| } |
| |
| // TODO: move to NotificationManager once we can mock it |
| // XXX what to do about multi-user? |
| try { |
| final String packageName = mContext.getPackageName(); |
| final int[] idReceived = new int[1]; |
| mNotifManager.enqueueNotificationWithTag( |
| packageName, packageName, tag, 0x0, builder.getNotification(), idReceived, |
| UserHandle.USER_OWNER); |
| mActiveNotifs.add(tag); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| /** |
| * Show ongoing notification to reflect that {@link #mRestrictBackground} |
| * has been enabled. |
| */ |
| private void enqueueRestrictedNotification(String tag) { |
| final Resources res = mContext.getResources(); |
| final Notification.Builder builder = new Notification.Builder(mContext); |
| |
| final CharSequence title = res.getText(R.string.data_usage_restricted_title); |
| final CharSequence body = res.getString(R.string.data_usage_restricted_body); |
| |
| builder.setOnlyAlertOnce(true); |
| builder.setOngoing(true); |
| builder.setSmallIcon(R.drawable.stat_notify_error); |
| builder.setTicker(title); |
| builder.setContentTitle(title); |
| builder.setContentText(body); |
| builder.setColor(mContext.getResources().getColor( |
| com.android.internal.R.color.system_notification_accent_color)); |
| |
| final Intent intent = buildAllowBackgroundDataIntent(); |
| builder.setContentIntent( |
| PendingIntent.getBroadcast(mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)); |
| |
| // TODO: move to NotificationManager once we can mock it |
| // XXX what to do about multi-user? |
| try { |
| final String packageName = mContext.getPackageName(); |
| final int[] idReceived = new int[1]; |
| mNotifManager.enqueueNotificationWithTag(packageName, packageName, tag, |
| 0x0, builder.getNotification(), idReceived, UserHandle.USER_OWNER); |
| 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 |
| // XXX what to do about multi-user? |
| try { |
| final String packageName = mContext.getPackageName(); |
| mNotifManager.cancelNotificationWithTag( |
| packageName, tag, 0x0, UserHandle.USER_OWNER); |
| } 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 (mRulesLock) { |
| ensureActiveMobilePolicyLocked(); |
| updateNetworkEnabledLocked(); |
| updateNetworkRulesLocked(); |
| updateNotificationsLocked(); |
| } |
| } |
| }; |
| |
| /** |
| * Proactively control network data connections when they exceed |
| * {@link NetworkPolicy#limitBytes}. |
| */ |
| void updateNetworkEnabledLocked() { |
| if (LOGV) Slog.v(TAG, "updateNetworkEnabledLocked()"); |
| |
| // 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); |
| } |
| } |
| |
| /** |
| * Control {@link IConnectivityManager#setPolicyDataEnable(int, boolean)} |
| * for the given {@link NetworkTemplate}. |
| */ |
| private void setNetworkTemplateEnabled(NetworkTemplate template, boolean enabled) { |
| final TelephonyManager tele = TelephonyManager.from(mContext); |
| |
| switch (template.getMatchRule()) { |
| case MATCH_MOBILE_3G_LOWER: |
| case MATCH_MOBILE_4G: |
| case MATCH_MOBILE_ALL: |
| // TODO: offer more granular control over radio states once |
| // 4965893 is available. |
| if (tele.getSimState() == SIM_STATE_READY |
| && Objects.equals(tele.getSubscriberId(), template.getSubscriberId())) { |
| setPolicyDataEnable(TYPE_MOBILE, enabled); |
| setPolicyDataEnable(TYPE_WIMAX, enabled); |
| } |
| break; |
| case MATCH_WIFI: |
| setPolicyDataEnable(TYPE_WIFI, enabled); |
| break; |
| case MATCH_ETHERNET: |
| setPolicyDataEnable(TYPE_ETHERNET, enabled); |
| break; |
| default: |
| throw new IllegalArgumentException("unexpected template"); |
| } |
| } |
| |
| /** |
| * 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 updateNetworkRulesLocked() { |
| if (LOGV) Slog.v(TAG, "updateIfacesLocked()"); |
| |
| final NetworkState[] states; |
| try { |
| states = mConnManager.getAllNetworkState(); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| return; |
| } |
| |
| // If we are in restrict power mode, we want to treat all interfaces |
| // as metered, to restrict access to the network by uid. However, we |
| // will not have a bandwidth limit. Also only do this if restrict |
| // background data use is *not* enabled, since that takes precendence |
| // use over those networks can have a cost associated with it). |
| final boolean powerSave = mRestrictPower && !mRestrictBackground; |
| |
| // 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.isConnected()) { |
| final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state); |
| |
| final String baseIface = state.linkProperties.getInterfaceName(); |
| if (baseIface != null) { |
| connIdents.add(Pair.create(baseIface, ident)); |
| if (powerSave) { |
| connIfaces.add(baseIface); |
| } |
| } |
| |
| // 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)); |
| if (powerSave) { |
| connIfaces.add(stackedIface); |
| } |
| } |
| } |
| } |
| } |
| |
| // 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.toString() + " 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) { |
| removeInterfaceQuota(iface); |
| setInterfaceQuota(iface, quotaBytes); |
| newMeteredIfaces.add(iface); |
| if (powerSave) { |
| connIfaces.remove(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); |
| removeInterfaceQuota(iface); |
| setInterfaceQuota(iface, Long.MAX_VALUE); |
| 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)) { |
| removeInterfaceQuota(iface); |
| } |
| } |
| 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 ensureActiveMobilePolicyLocked() { |
| if (LOGV) Slog.v(TAG, "ensureActiveMobilePolicyLocked()"); |
| if (mSuppressDefaultPolicy) return; |
| |
| final TelephonyManager tele = TelephonyManager.from(mContext); |
| |
| // avoid creating policy when SIM isn't ready |
| if (tele.getSimState() != SIM_STATE_READY) return; |
| |
| final String subscriberId = tele.getSubscriberId(); |
| final NetworkIdentity probeIdent = new NetworkIdentity( |
| TYPE_MOBILE, TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false); |
| |
| // examine to see if any policy is defined for active mobile |
| boolean mobileDefined = false; |
| for (int i = mNetworkPolicy.size()-1; i >= 0; i--) { |
| if (mNetworkPolicy.valueAt(i).template.matches(probeIdent)) { |
| mobileDefined = true; |
| break; |
| } |
| } |
| |
| if (!mobileDefined) { |
| Slog.i(TAG, "no policy for active mobile network; 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); |
| addNetworkPolicyLocked(policy); |
| } |
| } |
| |
| private void readPolicyLocked() { |
| if (LOGV) Slog.v(TAG, "readPolicyLocked()"); |
| |
| // 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, null); |
| |
| int type; |
| int version = VERSION_INIT; |
| while ((type = in.next()) != END_DOCUMENT) { |
| final String tag = in.getName(); |
| if (type == START_TAG) { |
| if (TAG_POLICY_LIST.equals(tag)) { |
| version = readIntAttribute(in, ATTR_VERSION); |
| if (version >= VERSION_ADDED_RESTRICT_BACKGROUND) { |
| mRestrictBackground = readBooleanAttribute( |
| in, ATTR_RESTRICT_BACKGROUND); |
| } else { |
| mRestrictBackground = false; |
| } |
| |
| } 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); |
| 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)) { |
| setUidPolicyUncheckedLocked(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 |
| final int uid = UserHandle.getUid(UserHandle.USER_OWNER, appId); |
| if (UserHandle.isApp(uid)) { |
| setUidPolicyUncheckedLocked(uid, policy, false); |
| } else { |
| Slog.w(TAG, "unable to apply policy to UID " + uid + "; ignoring"); |
| } |
| } |
| } |
| } |
| |
| } catch (FileNotFoundException e) { |
| // missing policy is okay, probably first boot |
| upgradeLegacyBackgroundData(); |
| } 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 upgradeLegacyBackgroundData() { |
| 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 writePolicyLocked() { |
| if (LOGV) Slog.v(TAG, "writePolicyLocked()"); |
| |
| FileOutputStream fos = null; |
| try { |
| fos = mPolicyFile.startWrite(); |
| |
| XmlSerializer out = new FastXmlSerializer(); |
| out.setOutput(fos, "utf-8"); |
| 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; |
| |
| 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); |
| 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 (mRulesLock) { |
| final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| if (oldPolicy != policy) { |
| setUidPolicyUncheckedLocked(uid, policy, true); |
| } |
| } |
| } |
| |
| @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 (mRulesLock) { |
| final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| policy |= oldPolicy; |
| if (oldPolicy != policy) { |
| setUidPolicyUncheckedLocked(uid, 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 (mRulesLock) { |
| final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| policy = oldPolicy & ~policy; |
| if (oldPolicy != policy) { |
| setUidPolicyUncheckedLocked(uid, policy, true); |
| } |
| } |
| } |
| |
| private void setUidPolicyUncheckedLocked(int uid, int policy, boolean persist) { |
| mUidPolicy.put(uid, policy); |
| |
| // uid policy changed, recompute rules and persist policy. |
| updateRulesForUidLocked(uid); |
| if (persist) { |
| writePolicyLocked(); |
| } |
| } |
| |
| @Override |
| public int getUidPolicy(int uid) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| synchronized (mRulesLock) { |
| return mUidPolicy.get(uid, POLICY_NONE); |
| } |
| } |
| |
| @Override |
| public int[] getUidsWithPolicy(int policy) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| int[] uids = new int[0]; |
| synchronized (mRulesLock) { |
| 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; |
| } |
| |
| @Override |
| public int[] getPowerSaveAppIdWhitelist() { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| synchronized (mRulesLock) { |
| int size = mPowerSaveWhitelistAppIds.size(); |
| int[] appids = new int[size]; |
| for (int i = 0; i < size; i++) { |
| appids[i] = mPowerSaveWhitelistAppIds.keyAt(i); |
| } |
| return appids; |
| } |
| } |
| |
| /** |
| * Remove any policies associated with given {@link UserHandle}, persisting |
| * if any changes are made. |
| */ |
| void removePoliciesForUserLocked(int userId) { |
| if (LOGV) Slog.v(TAG, "removePoliciesForUserLocked()"); |
| |
| 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); |
| updateRulesForUidLocked(uid); |
| } |
| writePolicyLocked(); |
| } |
| } |
| |
| @Override |
| public void registerListener(INetworkPolicyListener listener) { |
| // TODO: create permission for observing network policy |
| mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG); |
| |
| mListeners.register(listener); |
| |
| // TODO: consider dispatching existing rules to new listeners |
| } |
| |
| @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); |
| |
| maybeRefreshTrustedTime(); |
| synchronized (mRulesLock) { |
| mNetworkPolicy.clear(); |
| for (NetworkPolicy policy : policies) { |
| mNetworkPolicy.put(policy.template, policy); |
| } |
| |
| updateNetworkEnabledLocked(); |
| updateNetworkRulesLocked(); |
| updateNotificationsLocked(); |
| writePolicyLocked(); |
| } |
| } |
| |
| void addNetworkPolicyLocked(NetworkPolicy policy) { |
| mNetworkPolicy.put(policy.template, policy); |
| |
| updateNetworkEnabledLocked(); |
| updateNetworkRulesLocked(); |
| updateNotificationsLocked(); |
| writePolicyLocked(); |
| } |
| |
| @Override |
| public NetworkPolicy[] getNetworkPolicies() { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| mContext.enforceCallingOrSelfPermission(READ_PHONE_STATE, TAG); |
| |
| synchronized (mRulesLock) { |
| return mNetworkPolicy.values().toArray(new NetworkPolicy[mNetworkPolicy.size()]); |
| } |
| } |
| |
| @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 (mRulesLock) { |
| // 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"); |
| } |
| |
| updateNetworkEnabledLocked(); |
| updateNetworkRulesLocked(); |
| updateNotificationsLocked(); |
| writePolicyLocked(); |
| } |
| } |
| |
| @Override |
| public void setRestrictBackground(boolean restrictBackground) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| maybeRefreshTrustedTime(); |
| synchronized (mRulesLock) { |
| mRestrictBackground = restrictBackground; |
| updateRulesForGlobalChangeLocked(false); |
| updateNotificationsLocked(); |
| writePolicyLocked(); |
| } |
| |
| mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_CHANGED, restrictBackground ? 1 : 0, 0) |
| .sendToTarget(); |
| } |
| |
| @Override |
| public boolean getRestrictBackground() { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| synchronized (mRulesLock) { |
| return mRestrictBackground; |
| } |
| } |
| |
| private NetworkPolicy findPolicyForNetworkLocked(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 (mRulesLock) { |
| policy = findPolicyForNetworkLocked(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) { |
| final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state); |
| |
| // roaming networks are always considered metered |
| if (ident.getRoaming()) { |
| return true; |
| } |
| |
| final NetworkPolicy policy; |
| synchronized (mRulesLock) { |
| policy = findPolicyForNetworkLocked(ident); |
| } |
| |
| if (policy != null) { |
| return policy.metered; |
| } else { |
| final int type = state.networkInfo.getType(); |
| if (isNetworkTypeMobile(type) || 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 (mRulesLock) { |
| if (argSet.contains("--unsnooze")) { |
| for (int i = mNetworkPolicy.size()-1; i >= 0; i--) { |
| mNetworkPolicy.valueAt(i).clearSnooze(); |
| } |
| |
| updateNetworkEnabledLocked(); |
| updateNetworkRulesLocked(); |
| updateNotificationsLocked(); |
| writePolicyLocked(); |
| |
| fout.println("Cleared snooze timestamps"); |
| return; |
| } |
| |
| fout.print("Restrict background: "); fout.println(mRestrictBackground); |
| fout.print("Restrict power: "); fout.println(mRestrictPower); |
| fout.print("Current foreground state: "); fout.println(mCurForegroundState); |
| 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="); |
| dumpPolicy(fout, policy); |
| 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(); |
| } |
| |
| final SparseBooleanArray knownUids = new SparseBooleanArray(); |
| collectKeys(mUidState, knownUids); |
| collectKeys(mUidRules, knownUids); |
| |
| fout.println("Status for 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); |
| |
| int state = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY); |
| fout.print(" state="); |
| fout.print(state); |
| fout.print(state <= mCurForegroundState ? " (fg)" : " (bg)"); |
| |
| fout.print(" pids="); |
| final int foregroundIndex = mUidPidState.indexOfKey(uid); |
| if (foregroundIndex < 0) { |
| fout.print("UNKNOWN"); |
| } else { |
| dumpSparseIntArray(fout, mUidPidState.valueAt(foregroundIndex)); |
| } |
| |
| fout.print(" rules="); |
| final int rulesIndex = mUidRules.indexOfKey(uid); |
| if (rulesIndex < 0) { |
| fout.print("UNKNOWN"); |
| } else { |
| dumpRules(fout, mUidRules.valueAt(rulesIndex)); |
| } |
| |
| fout.println(); |
| } |
| fout.decreaseIndent(); |
| } |
| } |
| |
| @Override |
| public boolean isUidForeground(int uid) { |
| mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG); |
| |
| synchronized (mRulesLock) { |
| return isUidForegroundLocked(uid); |
| } |
| } |
| |
| boolean isUidForegroundLocked(int uid) { |
| // only really in foreground when screen is also on |
| return mScreenOn && mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY) |
| <= mCurForegroundState; |
| } |
| |
| /** |
| * Process state of PID changed; recompute state at UID level. If |
| * changed, will trigger {@link #updateRulesForUidLocked(int)}. |
| */ |
| void computeUidStateLocked(int uid) { |
| final SparseIntArray pidState = mUidPidState.get(uid); |
| |
| // current pid is dropping foreground; examine other pids |
| int uidState = ActivityManager.PROCESS_STATE_CACHED_EMPTY; |
| if (pidState != null) { |
| final int size = pidState.size(); |
| for (int i = 0; i < size; i++) { |
| final int state = pidState.valueAt(i); |
| if (state < uidState) { |
| uidState = state; |
| } |
| } |
| } |
| |
| final int oldUidState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY); |
| if (oldUidState != uidState) { |
| // state changed, push updated rules |
| mUidState.put(uid, uidState); |
| final boolean oldForeground = oldUidState <= mCurForegroundState; |
| final boolean newForeground = uidState <= mCurForegroundState; |
| if (oldForeground != newForeground) { |
| updateRulesForUidLocked(uid); |
| } |
| } |
| } |
| |
| private void updateScreenOn() { |
| synchronized (mRulesLock) { |
| try { |
| mScreenOn = mPowerManager.isInteractive(); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| updateRulesForScreenLocked(); |
| } |
| } |
| |
| /** |
| * Update rules that might be changed by {@link #mScreenOn} value. |
| */ |
| private void updateRulesForScreenLocked() { |
| // only update rules for anyone with foreground activities |
| final int size = mUidState.size(); |
| for (int i = 0; i < size; i++) { |
| if (mUidState.valueAt(i) <= mCurForegroundState) { |
| final int uid = mUidState.keyAt(i); |
| updateRulesForUidLocked(uid); |
| } |
| } |
| } |
| |
| /** |
| * Update rules that might be changed by {@link #mRestrictBackground} |
| * or {@link #mRestrictPower} value. |
| */ |
| void updateRulesForGlobalChangeLocked(boolean restrictedNetworksChanged) { |
| final PackageManager pm = mContext.getPackageManager(); |
| final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE); |
| |
| // If we are in restrict power mode, we allow all important apps |
| // to have data access. Otherwise, we restrict data access to only |
| // the top apps. |
| mCurForegroundState = (!mRestrictBackground && mRestrictPower) |
| ? ActivityManager.PROCESS_STATE_IMPORTANT_FOREGROUND |
| : ActivityManager.PROCESS_STATE_TOP; |
| |
| // update rules for all installed applications |
| final List<UserInfo> users = um.getUsers(); |
| final List<ApplicationInfo> apps = pm.getInstalledApplications( |
| PackageManager.GET_UNINSTALLED_PACKAGES | PackageManager.GET_DISABLED_COMPONENTS); |
| |
| for (UserInfo user : users) { |
| for (ApplicationInfo app : apps) { |
| final int uid = UserHandle.getUid(user.id, app.uid); |
| updateRulesForUidLocked(uid); |
| } |
| } |
| |
| // limit data usage for some internal system services |
| updateRulesForUidLocked(android.os.Process.MEDIA_UID); |
| updateRulesForUidLocked(android.os.Process.DRM_UID); |
| |
| // If the set of restricted networks may have changed, re-evaluate those. |
| if (restrictedNetworksChanged) { |
| updateNetworkRulesLocked(); |
| } |
| } |
| |
| private static boolean isUidValidForRules(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)) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void updateRulesForUidLocked(int uid) { |
| if (!isUidValidForRules(uid)) return; |
| |
| final int uidPolicy = mUidPolicy.get(uid, POLICY_NONE); |
| final boolean uidForeground = isUidForegroundLocked(uid); |
| |
| // derive active rules based on policy and active state |
| int uidRules = RULE_ALLOW_ALL; |
| if (!uidForeground && (uidPolicy & POLICY_REJECT_METERED_BACKGROUND) != 0) { |
| // uid in background, and policy says to block metered data |
| uidRules = RULE_REJECT_METERED; |
| } else if (mRestrictBackground) { |
| if (!uidForeground) { |
| // uid in background, and global background disabled |
| uidRules = RULE_REJECT_METERED; |
| } |
| } else if (mRestrictPower) { |
| final boolean whitelisted = mPowerSaveWhitelistAppIds.get(UserHandle.getAppId(uid)); |
| if (!whitelisted && !uidForeground |
| && (uidPolicy & POLICY_ALLOW_BACKGROUND_BATTERY_SAVE) == 0) { |
| // uid is in background, restrict power use mode is on (so we want to |
| // restrict all background network access), and this uid is not on the |
| // white list of those allowed background access. |
| uidRules = RULE_REJECT_METERED; |
| } |
| } |
| |
| // TODO: only dispatch when rules actually change |
| |
| if (uidRules == RULE_ALLOW_ALL) { |
| mUidRules.delete(uid); |
| } else { |
| mUidRules.put(uid, uidRules); |
| } |
| |
| final boolean rejectMetered = (uidRules & RULE_REJECT_METERED) != 0; |
| setUidNetworkRules(uid, rejectMetered); |
| |
| // dispatch changed rule to existing listeners |
| mHandler.obtainMessage(MSG_RULES_CHANGED, uid, uidRules).sendToTarget(); |
| |
| try { |
| // adjust stats accounting based on foreground status |
| mNetworkStats.setUidForeground(uid, uidForeground); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| 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; |
| final int length = mListeners.beginBroadcast(); |
| for (int i = 0; i < length; i++) { |
| final INetworkPolicyListener listener = mListeners.getBroadcastItem(i); |
| if (listener != null) { |
| try { |
| listener.onUidRulesChanged(uid, uidRules); |
| } catch (RemoteException e) { |
| } |
| } |
| } |
| mListeners.finishBroadcast(); |
| return true; |
| } |
| case MSG_METERED_IFACES_CHANGED: { |
| final String[] meteredIfaces = (String[]) msg.obj; |
| final int length = mListeners.beginBroadcast(); |
| for (int i = 0; i < length; i++) { |
| final INetworkPolicyListener listener = mListeners.getBroadcastItem(i); |
| if (listener != null) { |
| try { |
| listener.onMeteredIfacesChanged(meteredIfaces); |
| } catch (RemoteException e) { |
| } |
| } |
| } |
| mListeners.finishBroadcast(); |
| return true; |
| } |
| case MSG_LIMIT_REACHED: { |
| final String iface = (String) msg.obj; |
| |
| maybeRefreshTrustedTime(); |
| synchronized (mRulesLock) { |
| 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 |
| } |
| |
| updateNetworkEnabledLocked(); |
| updateNotificationsLocked(); |
| } |
| } |
| return true; |
| } |
| case MSG_RESTRICT_BACKGROUND_CHANGED: { |
| final boolean restrictBackground = msg.arg1 != 0; |
| final int length = mListeners.beginBroadcast(); |
| for (int i = 0; i < length; i++) { |
| final INetworkPolicyListener listener = mListeners.getBroadcastItem(i); |
| if (listener != null) { |
| try { |
| listener.onRestrictBackgroundChanged(restrictBackground); |
| } catch (RemoteException e) { |
| } |
| } |
| } |
| 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; |
| } |
| 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 setUidNetworkRules(int uid, boolean rejectOnQuotaInterfaces) { |
| try { |
| mNetworkManager.setUidNetworkRules(uid, rejectOnQuotaInterfaces); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem setting uid rules", e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| /** |
| * Control {@link IConnectivityManager#setPolicyDataEnable(int, boolean)}. |
| */ |
| private void setPolicyDataEnable(int networkType, boolean enabled) { |
| try { |
| mConnManager.setPolicyDataEnable(networkType, enabled); |
| } 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(NetworkTemplate template) { |
| final Intent intent = new Intent(); |
| intent.setComponent(new ComponentName( |
| "com.android.systemui", "com.android.systemui.net.NetworkOverLimitActivity")); |
| intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| intent.putExtra(EXTRA_NETWORK_TEMPLATE, template); |
| return intent; |
| } |
| |
| private static Intent buildViewDataUsageIntent(NetworkTemplate template) { |
| final Intent intent = new Intent(); |
| intent.setComponent(new ComponentName( |
| "com.android.settings", "com.android.settings.Settings$DataUsageSummaryActivity")); |
| 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); |
| } |
| } |
| |
| private static void dumpSparseIntArray(PrintWriter fout, SparseIntArray value) { |
| fout.print("["); |
| final int size = value.size(); |
| for (int i = 0; i < size; i++) { |
| fout.print(value.keyAt(i) + "=" + value.valueAt(i)); |
| if (i < size - 1) fout.print(","); |
| } |
| fout.print("]"); |
| } |
| } |