| /* |
| * 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.READ_NETWORK_USAGE_HISTORY; |
| import static android.content.Intent.ACTION_SHUTDOWN; |
| import static android.content.Intent.ACTION_UID_REMOVED; |
| import static android.content.Intent.ACTION_USER_REMOVED; |
| import static android.content.Intent.EXTRA_UID; |
| import static android.net.ConnectivityManager.ACTION_TETHER_STATE_CHANGED; |
| import static android.net.ConnectivityManager.isNetworkTypeMobile; |
| import static android.net.NetworkStack.checkNetworkStackPermission; |
| import static android.net.NetworkStats.DEFAULT_NETWORK_ALL; |
| import static android.net.NetworkStats.IFACE_ALL; |
| import static android.net.NetworkStats.INTERFACES_ALL; |
| import static android.net.NetworkStats.METERED_ALL; |
| import static android.net.NetworkStats.ROAMING_ALL; |
| import static android.net.NetworkStats.SET_ALL; |
| import static android.net.NetworkStats.SET_DEFAULT; |
| import static android.net.NetworkStats.SET_FOREGROUND; |
| import static android.net.NetworkStats.STATS_PER_IFACE; |
| import static android.net.NetworkStats.STATS_PER_UID; |
| import static android.net.NetworkStats.TAG_ALL; |
| import static android.net.NetworkStats.TAG_NONE; |
| import static android.net.NetworkStats.UID_ALL; |
| import static android.net.NetworkStatsHistory.FIELD_ALL; |
| import static android.net.NetworkTemplate.buildTemplateMobileWildcard; |
| import static android.net.NetworkTemplate.buildTemplateWifiWildcard; |
| import static android.net.TrafficStats.KB_IN_BYTES; |
| import static android.net.TrafficStats.MB_IN_BYTES; |
| import static android.os.Trace.TRACE_TAG_NETWORK; |
| import static android.provider.Settings.Global.NETSTATS_AUGMENT_ENABLED; |
| import static android.provider.Settings.Global.NETSTATS_DEV_BUCKET_DURATION; |
| import static android.provider.Settings.Global.NETSTATS_DEV_DELETE_AGE; |
| import static android.provider.Settings.Global.NETSTATS_DEV_PERSIST_BYTES; |
| import static android.provider.Settings.Global.NETSTATS_DEV_ROTATE_AGE; |
| import static android.provider.Settings.Global.NETSTATS_GLOBAL_ALERT_BYTES; |
| import static android.provider.Settings.Global.NETSTATS_POLL_INTERVAL; |
| import static android.provider.Settings.Global.NETSTATS_SAMPLE_ENABLED; |
| import static android.provider.Settings.Global.NETSTATS_UID_BUCKET_DURATION; |
| import static android.provider.Settings.Global.NETSTATS_UID_DELETE_AGE; |
| import static android.provider.Settings.Global.NETSTATS_UID_PERSIST_BYTES; |
| import static android.provider.Settings.Global.NETSTATS_UID_ROTATE_AGE; |
| import static android.provider.Settings.Global.NETSTATS_UID_TAG_BUCKET_DURATION; |
| import static android.provider.Settings.Global.NETSTATS_UID_TAG_DELETE_AGE; |
| import static android.provider.Settings.Global.NETSTATS_UID_TAG_PERSIST_BYTES; |
| import static android.provider.Settings.Global.NETSTATS_UID_TAG_ROTATE_AGE; |
| import static android.text.format.DateUtils.DAY_IN_MILLIS; |
| import static android.text.format.DateUtils.HOUR_IN_MILLIS; |
| import static android.text.format.DateUtils.MINUTE_IN_MILLIS; |
| import static android.text.format.DateUtils.SECOND_IN_MILLIS; |
| |
| import static com.android.internal.util.Preconditions.checkNotNull; |
| import static com.android.server.NetworkManagementService.LIMIT_GLOBAL_ALERT; |
| import static com.android.server.NetworkManagementSocketTagger.resetKernelUidStats; |
| import static com.android.server.NetworkManagementSocketTagger.setKernelCounterSet; |
| |
| import android.annotation.NonNull; |
| import android.app.AlarmManager; |
| import android.app.PendingIntent; |
| import android.app.usage.NetworkStatsManager; |
| import android.content.BroadcastReceiver; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.net.DataUsageRequest; |
| import android.net.INetworkManagementEventObserver; |
| import android.net.INetworkStatsService; |
| import android.net.INetworkStatsSession; |
| import android.net.LinkProperties; |
| import android.net.Network; |
| import android.net.NetworkCapabilities; |
| import android.net.NetworkIdentity; |
| import android.net.NetworkInfo; |
| import android.net.NetworkState; |
| import android.net.NetworkStats; |
| import android.net.NetworkStats.NonMonotonicObserver; |
| import android.net.NetworkStatsHistory; |
| import android.net.NetworkTemplate; |
| import android.net.TrafficStats; |
| import android.os.BestClock; |
| import android.os.Binder; |
| import android.os.DropBoxManager; |
| import android.os.Environment; |
| import android.os.Handler; |
| import android.os.HandlerThread; |
| import android.os.IBinder; |
| import android.os.INetworkManagementService; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.Messenger; |
| import android.os.PowerManager; |
| import android.os.RemoteException; |
| import android.os.SystemClock; |
| import android.os.Trace; |
| import android.os.UserHandle; |
| import android.provider.Settings; |
| import android.provider.Settings.Global; |
| import android.service.NetworkInterfaceProto; |
| import android.service.NetworkStatsServiceDumpProto; |
| import android.telephony.SubscriptionPlan; |
| import android.telephony.TelephonyManager; |
| import android.text.format.DateUtils; |
| import android.util.ArrayMap; |
| import android.util.ArraySet; |
| import android.util.EventLog; |
| import android.util.Log; |
| import android.util.MathUtils; |
| import android.util.Slog; |
| import android.util.SparseIntArray; |
| import android.util.proto.ProtoOutputStream; |
| |
| import com.android.internal.annotations.GuardedBy; |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.net.VpnInfo; |
| import com.android.internal.util.ArrayUtils; |
| import com.android.internal.util.DumpUtils; |
| import com.android.internal.util.FileRotator; |
| import com.android.internal.util.IndentingPrintWriter; |
| import com.android.server.EventLogTags; |
| import com.android.server.LocalServices; |
| import com.android.server.connectivity.Tethering; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.time.Clock; |
| import java.time.ZoneOffset; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.List; |
| |
| /** |
| * Collect and persist detailed network statistics, and provide this data to |
| * other system services. |
| */ |
| public class NetworkStatsService extends INetworkStatsService.Stub { |
| static final String TAG = "NetworkStats"; |
| static final boolean LOGD = Log.isLoggable(TAG, Log.DEBUG); |
| static final boolean LOGV = Log.isLoggable(TAG, Log.VERBOSE); |
| |
| // Perform polling and persist all (FLAG_PERSIST_ALL). |
| private static final int MSG_PERFORM_POLL = 1; |
| // Perform polling, persist network, and register the global alert again. |
| private static final int MSG_PERFORM_POLL_REGISTER_ALERT = 2; |
| |
| /** Flags to control detail level of poll event. */ |
| private static final int FLAG_PERSIST_NETWORK = 0x1; |
| private static final int FLAG_PERSIST_UID = 0x2; |
| private static final int FLAG_PERSIST_ALL = FLAG_PERSIST_NETWORK | FLAG_PERSIST_UID; |
| private static final int FLAG_PERSIST_FORCE = 0x100; |
| |
| /** |
| * When global alert quota is high, wait for this delay before processing each polling, |
| * and do not schedule further polls once there is already one queued. |
| * This avoids firing the global alert too often on devices with high transfer speeds and |
| * high quota. |
| */ |
| private static final int PERFORM_POLL_DELAY_MS = 1000; |
| |
| private static final String TAG_NETSTATS_ERROR = "netstats_error"; |
| |
| private final Context mContext; |
| private final INetworkManagementService mNetworkManager; |
| private final AlarmManager mAlarmManager; |
| private final Clock mClock; |
| private final TelephonyManager mTeleManager; |
| private final NetworkStatsSettings mSettings; |
| private final NetworkStatsObservers mStatsObservers; |
| |
| private final File mSystemDir; |
| private final File mBaseDir; |
| |
| private final PowerManager.WakeLock mWakeLock; |
| |
| private final boolean mUseBpfTrafficStats; |
| |
| @VisibleForTesting |
| public static final String ACTION_NETWORK_STATS_POLL = |
| "com.android.server.action.NETWORK_STATS_POLL"; |
| public static final String ACTION_NETWORK_STATS_UPDATED = |
| "com.android.server.action.NETWORK_STATS_UPDATED"; |
| |
| private PendingIntent mPollIntent; |
| |
| private static final String PREFIX_DEV = "dev"; |
| private static final String PREFIX_XT = "xt"; |
| private static final String PREFIX_UID = "uid"; |
| private static final String PREFIX_UID_TAG = "uid_tag"; |
| |
| /** |
| * Virtual network interface for video telephony. This is for VT data usage counting purpose. |
| */ |
| public static final String VT_INTERFACE = "vt_data0"; |
| |
| /** |
| * Settings that can be changed externally. |
| */ |
| public interface NetworkStatsSettings { |
| public long getPollInterval(); |
| public boolean getSampleEnabled(); |
| public boolean getAugmentEnabled(); |
| |
| public static class Config { |
| public final long bucketDuration; |
| public final long rotateAgeMillis; |
| public final long deleteAgeMillis; |
| |
| public Config(long bucketDuration, long rotateAgeMillis, long deleteAgeMillis) { |
| this.bucketDuration = bucketDuration; |
| this.rotateAgeMillis = rotateAgeMillis; |
| this.deleteAgeMillis = deleteAgeMillis; |
| } |
| } |
| |
| public Config getDevConfig(); |
| public Config getXtConfig(); |
| public Config getUidConfig(); |
| public Config getUidTagConfig(); |
| |
| public long getGlobalAlertBytes(long def); |
| public long getDevPersistBytes(long def); |
| public long getXtPersistBytes(long def); |
| public long getUidPersistBytes(long def); |
| public long getUidTagPersistBytes(long def); |
| } |
| |
| private final Object mStatsLock = new Object(); |
| |
| /** Set of currently active ifaces. */ |
| @GuardedBy("mStatsLock") |
| private final ArrayMap<String, NetworkIdentitySet> mActiveIfaces = new ArrayMap<>(); |
| |
| /** Set of currently active ifaces for UID stats. */ |
| @GuardedBy("mStatsLock") |
| private final ArrayMap<String, NetworkIdentitySet> mActiveUidIfaces = new ArrayMap<>(); |
| |
| /** Current default active iface. */ |
| @GuardedBy("mStatsLock") |
| private String mActiveIface; |
| |
| /** Set of any ifaces associated with mobile networks since boot. */ |
| @GuardedBy("mStatsLock") |
| private String[] mMobileIfaces = new String[0]; |
| |
| /** Set of all ifaces currently used by traffic that does not explicitly specify a Network. */ |
| @GuardedBy("mStatsLock") |
| private Network[] mDefaultNetworks = new Network[0]; |
| |
| /** Set containing info about active VPNs and their underlying networks. */ |
| @GuardedBy("mStatsLock") |
| private VpnInfo[] mVpnInfos = new VpnInfo[0]; |
| |
| private final DropBoxNonMonotonicObserver mNonMonotonicObserver = |
| new DropBoxNonMonotonicObserver(); |
| |
| @GuardedBy("mStatsLock") |
| private NetworkStatsRecorder mDevRecorder; |
| @GuardedBy("mStatsLock") |
| private NetworkStatsRecorder mXtRecorder; |
| @GuardedBy("mStatsLock") |
| private NetworkStatsRecorder mUidRecorder; |
| @GuardedBy("mStatsLock") |
| private NetworkStatsRecorder mUidTagRecorder; |
| |
| /** Cached {@link #mXtRecorder} stats. */ |
| @GuardedBy("mStatsLock") |
| private NetworkStatsCollection mXtStatsCached; |
| |
| /** Current counter sets for each UID. */ |
| private SparseIntArray mActiveUidCounterSet = new SparseIntArray(); |
| |
| /** Data layer operation counters for splicing into other structures. */ |
| private NetworkStats mUidOperations = new NetworkStats(0L, 10); |
| |
| /** Must be set in factory by calling #setHandler. */ |
| private Handler mHandler; |
| private Handler.Callback mHandlerCallback; |
| |
| private volatile boolean mSystemReady; |
| private long mPersistThreshold = 2 * MB_IN_BYTES; |
| private long mGlobalAlertBytes; |
| |
| private static final long POLL_RATE_LIMIT_MS = 15_000; |
| |
| private long mLastStatsSessionPoll; |
| |
| /** Map from UID to number of opened sessions */ |
| @GuardedBy("mOpenSessionCallsPerUid") |
| private final SparseIntArray mOpenSessionCallsPerUid = new SparseIntArray(); |
| |
| private final static int DUMP_STATS_SESSION_COUNT = 20; |
| |
| private static @NonNull File getDefaultSystemDir() { |
| return new File(Environment.getDataDirectory(), "system"); |
| } |
| |
| private static @NonNull File getDefaultBaseDir() { |
| File baseDir = new File(getDefaultSystemDir(), "netstats"); |
| baseDir.mkdirs(); |
| return baseDir; |
| } |
| |
| private static @NonNull Clock getDefaultClock() { |
| return new BestClock(ZoneOffset.UTC, SystemClock.currentNetworkTimeClock(), |
| Clock.systemUTC()); |
| } |
| |
| private static final class NetworkStatsHandler extends Handler { |
| NetworkStatsHandler(Looper looper, Handler.Callback callback) { |
| super(looper, callback); |
| } |
| } |
| |
| public static NetworkStatsService create(Context context, |
| INetworkManagementService networkManager) { |
| AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); |
| PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); |
| PowerManager.WakeLock wakeLock = |
| powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); |
| |
| NetworkStatsService service = new NetworkStatsService(context, networkManager, alarmManager, |
| wakeLock, getDefaultClock(), TelephonyManager.getDefault(), |
| new DefaultNetworkStatsSettings(context), new NetworkStatsObservers(), |
| getDefaultSystemDir(), getDefaultBaseDir()); |
| service.registerLocalService(); |
| |
| HandlerThread handlerThread = new HandlerThread(TAG); |
| Handler.Callback callback = new HandlerCallback(service); |
| handlerThread.start(); |
| Handler handler = new NetworkStatsHandler(handlerThread.getLooper(), callback); |
| service.setHandler(handler, callback); |
| return service; |
| } |
| |
| // This must not be called outside of tests, even within the same package, as this constructor |
| // does not register the local service. Use the create() helper above. |
| @VisibleForTesting |
| NetworkStatsService(Context context, INetworkManagementService networkManager, |
| AlarmManager alarmManager, PowerManager.WakeLock wakeLock, Clock clock, |
| TelephonyManager teleManager, NetworkStatsSettings settings, |
| NetworkStatsObservers statsObservers, File systemDir, File baseDir) { |
| mContext = checkNotNull(context, "missing Context"); |
| mNetworkManager = checkNotNull(networkManager, "missing INetworkManagementService"); |
| mAlarmManager = checkNotNull(alarmManager, "missing AlarmManager"); |
| mClock = checkNotNull(clock, "missing Clock"); |
| mSettings = checkNotNull(settings, "missing NetworkStatsSettings"); |
| mTeleManager = checkNotNull(teleManager, "missing TelephonyManager"); |
| mWakeLock = checkNotNull(wakeLock, "missing WakeLock"); |
| mStatsObservers = checkNotNull(statsObservers, "missing NetworkStatsObservers"); |
| mSystemDir = checkNotNull(systemDir, "missing systemDir"); |
| mBaseDir = checkNotNull(baseDir, "missing baseDir"); |
| mUseBpfTrafficStats = new File("/sys/fs/bpf/map_netd_app_uid_stats_map").exists(); |
| } |
| |
| private void registerLocalService() { |
| LocalServices.addService(NetworkStatsManagerInternal.class, |
| new NetworkStatsManagerInternalImpl()); |
| } |
| |
| @VisibleForTesting |
| void setHandler(Handler handler, Handler.Callback callback) { |
| mHandler = handler; |
| mHandlerCallback = callback; |
| } |
| |
| public void systemReady() { |
| mSystemReady = true; |
| |
| if (!isBandwidthControlEnabled()) { |
| Slog.w(TAG, "bandwidth controls disabled, unable to track stats"); |
| return; |
| } |
| |
| synchronized (mStatsLock) { |
| // create data recorders along with historical rotators |
| mDevRecorder = buildRecorder(PREFIX_DEV, mSettings.getDevConfig(), false); |
| mXtRecorder = buildRecorder(PREFIX_XT, mSettings.getXtConfig(), false); |
| mUidRecorder = buildRecorder(PREFIX_UID, mSettings.getUidConfig(), false); |
| mUidTagRecorder = buildRecorder(PREFIX_UID_TAG, mSettings.getUidTagConfig(), true); |
| |
| updatePersistThresholdsLocked(); |
| |
| // upgrade any legacy stats, migrating them to rotated files |
| maybeUpgradeLegacyStatsLocked(); |
| |
| // read historical network stats from disk, since policy service |
| // might need them right away. |
| mXtStatsCached = mXtRecorder.getOrLoadCompleteLocked(); |
| |
| // bootstrap initial stats to prevent double-counting later |
| bootstrapStatsLocked(); |
| } |
| |
| // watch for tethering changes |
| final IntentFilter tetherFilter = new IntentFilter(ACTION_TETHER_STATE_CHANGED); |
| mContext.registerReceiver(mTetherReceiver, tetherFilter, null, mHandler); |
| |
| // listen for periodic polling events |
| final IntentFilter pollFilter = new IntentFilter(ACTION_NETWORK_STATS_POLL); |
| mContext.registerReceiver(mPollReceiver, pollFilter, READ_NETWORK_USAGE_HISTORY, mHandler); |
| |
| // listen for uid removal to clean stats |
| final IntentFilter removedFilter = new IntentFilter(ACTION_UID_REMOVED); |
| mContext.registerReceiver(mRemovedReceiver, removedFilter, null, mHandler); |
| |
| // listen for user changes to clean stats |
| final IntentFilter userFilter = new IntentFilter(ACTION_USER_REMOVED); |
| mContext.registerReceiver(mUserReceiver, userFilter, null, mHandler); |
| |
| // persist stats during clean shutdown |
| final IntentFilter shutdownFilter = new IntentFilter(ACTION_SHUTDOWN); |
| mContext.registerReceiver(mShutdownReceiver, shutdownFilter); |
| |
| try { |
| mNetworkManager.registerObserver(mAlertObserver); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| |
| registerPollAlarmLocked(); |
| registerGlobalAlert(); |
| } |
| |
| private NetworkStatsRecorder buildRecorder( |
| String prefix, NetworkStatsSettings.Config config, boolean includeTags) { |
| final DropBoxManager dropBox = (DropBoxManager) mContext.getSystemService( |
| Context.DROPBOX_SERVICE); |
| return new NetworkStatsRecorder(new FileRotator( |
| mBaseDir, prefix, config.rotateAgeMillis, config.deleteAgeMillis), |
| mNonMonotonicObserver, dropBox, prefix, config.bucketDuration, includeTags); |
| } |
| |
| @GuardedBy("mStatsLock") |
| private void shutdownLocked() { |
| mContext.unregisterReceiver(mTetherReceiver); |
| mContext.unregisterReceiver(mPollReceiver); |
| mContext.unregisterReceiver(mRemovedReceiver); |
| mContext.unregisterReceiver(mUserReceiver); |
| mContext.unregisterReceiver(mShutdownReceiver); |
| |
| final long currentTime = mClock.millis(); |
| |
| // persist any pending stats |
| mDevRecorder.forcePersistLocked(currentTime); |
| mXtRecorder.forcePersistLocked(currentTime); |
| mUidRecorder.forcePersistLocked(currentTime); |
| mUidTagRecorder.forcePersistLocked(currentTime); |
| |
| mSystemReady = false; |
| } |
| |
| @GuardedBy("mStatsLock") |
| private void maybeUpgradeLegacyStatsLocked() { |
| File file; |
| try { |
| file = new File(mSystemDir, "netstats.bin"); |
| if (file.exists()) { |
| mDevRecorder.importLegacyNetworkLocked(file); |
| file.delete(); |
| } |
| |
| file = new File(mSystemDir, "netstats_xt.bin"); |
| if (file.exists()) { |
| file.delete(); |
| } |
| |
| file = new File(mSystemDir, "netstats_uid.bin"); |
| if (file.exists()) { |
| mUidRecorder.importLegacyUidLocked(file); |
| mUidTagRecorder.importLegacyUidLocked(file); |
| file.delete(); |
| } |
| } catch (IOException e) { |
| Log.wtf(TAG, "problem during legacy upgrade", e); |
| } catch (OutOfMemoryError e) { |
| Log.wtf(TAG, "problem during legacy upgrade", e); |
| } |
| } |
| |
| /** |
| * Clear any existing {@link #ACTION_NETWORK_STATS_POLL} alarms, and |
| * reschedule based on current {@link NetworkStatsSettings#getPollInterval()}. |
| */ |
| private void registerPollAlarmLocked() { |
| if (mPollIntent != null) { |
| mAlarmManager.cancel(mPollIntent); |
| } |
| |
| mPollIntent = PendingIntent.getBroadcast( |
| mContext, 0, new Intent(ACTION_NETWORK_STATS_POLL), 0); |
| |
| final long currentRealtime = SystemClock.elapsedRealtime(); |
| mAlarmManager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME, currentRealtime, |
| mSettings.getPollInterval(), mPollIntent); |
| } |
| |
| /** |
| * Register for a global alert that is delivered through |
| * {@link INetworkManagementEventObserver} once a threshold amount of data |
| * has been transferred. |
| */ |
| private void registerGlobalAlert() { |
| try { |
| mNetworkManager.setGlobalAlert(mGlobalAlertBytes); |
| } catch (IllegalStateException e) { |
| Slog.w(TAG, "problem registering for global alert: " + e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| @Override |
| public INetworkStatsSession openSession() { |
| // NOTE: if callers want to get non-augmented data, they should go |
| // through the public API |
| return openSessionInternal(NetworkStatsManager.FLAG_AUGMENT_WITH_SUBSCRIPTION_PLAN, null); |
| } |
| |
| @Override |
| public INetworkStatsSession openSessionForUsageStats(int flags, String callingPackage) { |
| return openSessionInternal(flags, callingPackage); |
| } |
| |
| private boolean isRateLimitedForPoll(int callingUid) { |
| if (callingUid == android.os.Process.SYSTEM_UID) { |
| return false; |
| } |
| |
| final long lastCallTime; |
| final long now = SystemClock.elapsedRealtime(); |
| synchronized (mOpenSessionCallsPerUid) { |
| int calls = mOpenSessionCallsPerUid.get(callingUid, 0); |
| mOpenSessionCallsPerUid.put(callingUid, calls + 1); |
| lastCallTime = mLastStatsSessionPoll; |
| mLastStatsSessionPoll = now; |
| } |
| |
| return now - lastCallTime < POLL_RATE_LIMIT_MS; |
| } |
| |
| private INetworkStatsSession openSessionInternal(final int flags, final String callingPackage) { |
| assertBandwidthControlEnabled(); |
| |
| final int callingUid = Binder.getCallingUid(); |
| final int usedFlags = isRateLimitedForPoll(callingUid) |
| ? flags & (~NetworkStatsManager.FLAG_POLL_ON_OPEN) |
| : flags; |
| if ((usedFlags & (NetworkStatsManager.FLAG_POLL_ON_OPEN |
| | NetworkStatsManager.FLAG_POLL_FORCE)) != 0) { |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| performPoll(FLAG_PERSIST_ALL); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| // return an IBinder which holds strong references to any loaded stats |
| // for its lifetime; when caller closes only weak references remain. |
| |
| return new INetworkStatsSession.Stub() { |
| private final int mCallingUid = callingUid; |
| private final String mCallingPackage = callingPackage; |
| private final @NetworkStatsAccess.Level int mAccessLevel = checkAccessLevel( |
| callingPackage); |
| |
| private NetworkStatsCollection mUidComplete; |
| private NetworkStatsCollection mUidTagComplete; |
| |
| private NetworkStatsCollection getUidComplete() { |
| synchronized (mStatsLock) { |
| if (mUidComplete == null) { |
| mUidComplete = mUidRecorder.getOrLoadCompleteLocked(); |
| } |
| return mUidComplete; |
| } |
| } |
| |
| private NetworkStatsCollection getUidTagComplete() { |
| synchronized (mStatsLock) { |
| if (mUidTagComplete == null) { |
| mUidTagComplete = mUidTagRecorder.getOrLoadCompleteLocked(); |
| } |
| return mUidTagComplete; |
| } |
| } |
| |
| @Override |
| public int[] getRelevantUids() { |
| return getUidComplete().getRelevantUids(mAccessLevel); |
| } |
| |
| @Override |
| public NetworkStats getDeviceSummaryForNetwork( |
| NetworkTemplate template, long start, long end) { |
| return internalGetSummaryForNetwork(template, usedFlags, start, end, mAccessLevel, |
| mCallingUid); |
| } |
| |
| @Override |
| public NetworkStats getSummaryForNetwork( |
| NetworkTemplate template, long start, long end) { |
| return internalGetSummaryForNetwork(template, usedFlags, start, end, mAccessLevel, |
| mCallingUid); |
| } |
| |
| @Override |
| public NetworkStatsHistory getHistoryForNetwork(NetworkTemplate template, int fields) { |
| return internalGetHistoryForNetwork(template, usedFlags, fields, mAccessLevel, |
| mCallingUid); |
| } |
| |
| @Override |
| public NetworkStats getSummaryForAllUid( |
| NetworkTemplate template, long start, long end, boolean includeTags) { |
| try { |
| final NetworkStats stats = getUidComplete() |
| .getSummary(template, start, end, mAccessLevel, mCallingUid); |
| if (includeTags) { |
| final NetworkStats tagStats = getUidTagComplete() |
| .getSummary(template, start, end, mAccessLevel, mCallingUid); |
| stats.combineAllValues(tagStats); |
| } |
| return stats; |
| } catch (NullPointerException e) { |
| // TODO: Track down and fix the cause of this crash and remove this catch block. |
| Slog.wtf(TAG, "NullPointerException in getSummaryForAllUid", e); |
| throw e; |
| } |
| } |
| |
| @Override |
| public NetworkStatsHistory getHistoryForUid( |
| NetworkTemplate template, int uid, int set, int tag, int fields) { |
| // NOTE: We don't augment UID-level statistics |
| if (tag == TAG_NONE) { |
| return getUidComplete().getHistory(template, null, uid, set, tag, fields, |
| Long.MIN_VALUE, Long.MAX_VALUE, mAccessLevel, mCallingUid); |
| } else { |
| return getUidTagComplete().getHistory(template, null, uid, set, tag, fields, |
| Long.MIN_VALUE, Long.MAX_VALUE, mAccessLevel, mCallingUid); |
| } |
| } |
| |
| @Override |
| public NetworkStatsHistory getHistoryIntervalForUid( |
| NetworkTemplate template, int uid, int set, int tag, int fields, |
| long start, long end) { |
| // NOTE: We don't augment UID-level statistics |
| if (tag == TAG_NONE) { |
| return getUidComplete().getHistory(template, null, uid, set, tag, fields, |
| start, end, mAccessLevel, mCallingUid); |
| } else if (uid == Binder.getCallingUid()) { |
| return getUidTagComplete().getHistory(template, null, uid, set, tag, fields, |
| start, end, mAccessLevel, mCallingUid); |
| } else { |
| throw new SecurityException("Calling package " + mCallingPackage |
| + " cannot access tag information from a different uid"); |
| } |
| } |
| |
| @Override |
| public void close() { |
| mUidComplete = null; |
| mUidTagComplete = null; |
| } |
| }; |
| } |
| |
| private @NetworkStatsAccess.Level int checkAccessLevel(String callingPackage) { |
| return NetworkStatsAccess.checkAccessLevel( |
| mContext, Binder.getCallingUid(), callingPackage); |
| } |
| |
| /** |
| * Find the most relevant {@link SubscriptionPlan} for the given |
| * {@link NetworkTemplate} and flags. This is typically used to augment |
| * local measurement results to match a known anchor from the carrier. |
| */ |
| private SubscriptionPlan resolveSubscriptionPlan(NetworkTemplate template, int flags) { |
| SubscriptionPlan plan = null; |
| if ((flags & NetworkStatsManager.FLAG_AUGMENT_WITH_SUBSCRIPTION_PLAN) != 0 |
| && mSettings.getAugmentEnabled()) { |
| if (LOGD) Slog.d(TAG, "Resolving plan for " + template); |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| plan = LocalServices.getService(NetworkPolicyManagerInternal.class) |
| .getSubscriptionPlan(template); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| if (LOGD) Slog.d(TAG, "Resolved to plan " + plan); |
| } |
| return plan; |
| } |
| |
| /** |
| * Return network summary, splicing between DEV and XT stats when |
| * appropriate. |
| */ |
| private NetworkStats internalGetSummaryForNetwork(NetworkTemplate template, int flags, |
| long start, long end, @NetworkStatsAccess.Level int accessLevel, int callingUid) { |
| // We've been using pure XT stats long enough that we no longer need to |
| // splice DEV and XT together. |
| final NetworkStatsHistory history = internalGetHistoryForNetwork(template, flags, FIELD_ALL, |
| accessLevel, callingUid); |
| |
| final long now = System.currentTimeMillis(); |
| final NetworkStatsHistory.Entry entry = history.getValues(start, end, now, null); |
| |
| final NetworkStats stats = new NetworkStats(end - start, 1); |
| stats.addValues(new NetworkStats.Entry(IFACE_ALL, UID_ALL, SET_ALL, TAG_NONE, |
| METERED_ALL, ROAMING_ALL, DEFAULT_NETWORK_ALL, entry.rxBytes, entry.rxPackets, |
| entry.txBytes, entry.txPackets, entry.operations)); |
| return stats; |
| } |
| |
| /** |
| * Return network history, splicing between DEV and XT stats when |
| * appropriate. |
| */ |
| private NetworkStatsHistory internalGetHistoryForNetwork(NetworkTemplate template, |
| int flags, int fields, @NetworkStatsAccess.Level int accessLevel, int callingUid) { |
| // We've been using pure XT stats long enough that we no longer need to |
| // splice DEV and XT together. |
| final SubscriptionPlan augmentPlan = resolveSubscriptionPlan(template, flags); |
| synchronized (mStatsLock) { |
| return mXtStatsCached.getHistory(template, augmentPlan, |
| UID_ALL, SET_ALL, TAG_NONE, fields, Long.MIN_VALUE, Long.MAX_VALUE, |
| accessLevel, callingUid); |
| } |
| } |
| |
| private long getNetworkTotalBytes(NetworkTemplate template, long start, long end) { |
| assertSystemReady(); |
| assertBandwidthControlEnabled(); |
| |
| // NOTE: if callers want to get non-augmented data, they should go |
| // through the public API |
| return internalGetSummaryForNetwork(template, |
| NetworkStatsManager.FLAG_AUGMENT_WITH_SUBSCRIPTION_PLAN, start, end, |
| NetworkStatsAccess.Level.DEVICE, Binder.getCallingUid()).getTotalBytes(); |
| } |
| |
| private NetworkStats getNetworkUidBytes(NetworkTemplate template, long start, long end) { |
| assertSystemReady(); |
| assertBandwidthControlEnabled(); |
| |
| final NetworkStatsCollection uidComplete; |
| synchronized (mStatsLock) { |
| uidComplete = mUidRecorder.getOrLoadCompleteLocked(); |
| } |
| return uidComplete.getSummary(template, start, end, NetworkStatsAccess.Level.DEVICE, |
| android.os.Process.SYSTEM_UID); |
| } |
| |
| @Override |
| public NetworkStats getDataLayerSnapshotForUid(int uid) throws RemoteException { |
| if (Binder.getCallingUid() != uid) { |
| mContext.enforceCallingOrSelfPermission(ACCESS_NETWORK_STATE, TAG); |
| } |
| assertBandwidthControlEnabled(); |
| |
| // TODO: switch to data layer stats once kernel exports |
| // for now, read network layer stats and flatten across all ifaces |
| final long token = Binder.clearCallingIdentity(); |
| final NetworkStats networkLayer; |
| try { |
| networkLayer = mNetworkManager.getNetworkStatsUidDetail(uid, |
| NetworkStats.INTERFACES_ALL); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| // splice in operation counts |
| networkLayer.spliceOperationsFrom(mUidOperations); |
| |
| final NetworkStats dataLayer = new NetworkStats( |
| networkLayer.getElapsedRealtime(), networkLayer.size()); |
| |
| NetworkStats.Entry entry = null; |
| for (int i = 0; i < networkLayer.size(); i++) { |
| entry = networkLayer.getValues(i, entry); |
| entry.iface = IFACE_ALL; |
| dataLayer.combineValues(entry); |
| } |
| |
| return dataLayer; |
| } |
| |
| @Override |
| public NetworkStats getDetailedUidStats(String[] requiredIfaces) { |
| try { |
| final String[] ifacesToQuery = |
| NetworkStatsFactory.augmentWithStackedInterfaces(requiredIfaces); |
| return getNetworkStatsUidDetail(ifacesToQuery); |
| } catch (RemoteException e) { |
| Log.wtf(TAG, "Error compiling UID stats", e); |
| return new NetworkStats(0L, 0); |
| } |
| } |
| |
| @Override |
| public String[] getMobileIfaces() { |
| return mMobileIfaces; |
| } |
| |
| @Override |
| public void incrementOperationCount(int uid, int tag, int operationCount) { |
| if (Binder.getCallingUid() != uid) { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.UPDATE_DEVICE_STATS, TAG); |
| } |
| |
| if (operationCount < 0) { |
| throw new IllegalArgumentException("operation count can only be incremented"); |
| } |
| if (tag == TAG_NONE) { |
| throw new IllegalArgumentException("operation count must have specific tag"); |
| } |
| |
| synchronized (mStatsLock) { |
| final int set = mActiveUidCounterSet.get(uid, SET_DEFAULT); |
| mUidOperations.combineValues( |
| mActiveIface, uid, set, tag, 0L, 0L, 0L, 0L, operationCount); |
| mUidOperations.combineValues( |
| mActiveIface, uid, set, TAG_NONE, 0L, 0L, 0L, 0L, operationCount); |
| } |
| } |
| |
| @VisibleForTesting |
| void setUidForeground(int uid, boolean uidForeground) { |
| synchronized (mStatsLock) { |
| final int set = uidForeground ? SET_FOREGROUND : SET_DEFAULT; |
| final int oldSet = mActiveUidCounterSet.get(uid, SET_DEFAULT); |
| if (oldSet != set) { |
| mActiveUidCounterSet.put(uid, set); |
| setKernelCounterSet(uid, set); |
| } |
| } |
| } |
| |
| @Override |
| public void forceUpdateIfaces( |
| Network[] defaultNetworks, |
| VpnInfo[] vpnArray, |
| NetworkState[] networkStates, |
| String activeIface) { |
| checkNetworkStackPermission(mContext); |
| assertBandwidthControlEnabled(); |
| |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| updateIfaces(defaultNetworks, vpnArray, networkStates, activeIface); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public void forceUpdate() { |
| mContext.enforceCallingOrSelfPermission(READ_NETWORK_USAGE_HISTORY, TAG); |
| assertBandwidthControlEnabled(); |
| |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| performPoll(FLAG_PERSIST_ALL); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| private void advisePersistThreshold(long thresholdBytes) { |
| assertBandwidthControlEnabled(); |
| |
| // clamp threshold into safe range |
| mPersistThreshold = MathUtils.constrain(thresholdBytes, 128 * KB_IN_BYTES, 2 * MB_IN_BYTES); |
| if (LOGV) { |
| Slog.v(TAG, "advisePersistThreshold() given " + thresholdBytes + ", clamped to " |
| + mPersistThreshold); |
| } |
| |
| // update and persist if beyond new thresholds |
| final long currentTime = mClock.millis(); |
| synchronized (mStatsLock) { |
| if (!mSystemReady) return; |
| |
| updatePersistThresholdsLocked(); |
| |
| mDevRecorder.maybePersistLocked(currentTime); |
| mXtRecorder.maybePersistLocked(currentTime); |
| mUidRecorder.maybePersistLocked(currentTime); |
| mUidTagRecorder.maybePersistLocked(currentTime); |
| } |
| |
| // re-arm global alert |
| registerGlobalAlert(); |
| } |
| |
| @Override |
| public DataUsageRequest registerUsageCallback(String callingPackage, |
| DataUsageRequest request, Messenger messenger, IBinder binder) { |
| checkNotNull(callingPackage, "calling package is null"); |
| checkNotNull(request, "DataUsageRequest is null"); |
| checkNotNull(request.template, "NetworkTemplate is null"); |
| checkNotNull(messenger, "messenger is null"); |
| checkNotNull(binder, "binder is null"); |
| |
| int callingUid = Binder.getCallingUid(); |
| @NetworkStatsAccess.Level int accessLevel = checkAccessLevel(callingPackage); |
| DataUsageRequest normalizedRequest; |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| normalizedRequest = mStatsObservers.register(request, messenger, binder, |
| callingUid, accessLevel); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| |
| // Create baseline stats |
| mHandler.sendMessage(mHandler.obtainMessage(MSG_PERFORM_POLL)); |
| |
| return normalizedRequest; |
| } |
| |
| @Override |
| public void unregisterUsageRequest(DataUsageRequest request) { |
| checkNotNull(request, "DataUsageRequest is null"); |
| |
| int callingUid = Binder.getCallingUid(); |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mStatsObservers.unregister(request, callingUid); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| } |
| |
| @Override |
| public long getUidStats(int uid, int type) { |
| return nativeGetUidStat(uid, type, checkBpfStatsEnable()); |
| } |
| |
| @Override |
| public long getIfaceStats(String iface, int type) { |
| long nativeIfaceStats = nativeGetIfaceStat(iface, type, checkBpfStatsEnable()); |
| if (nativeIfaceStats == -1) { |
| return nativeIfaceStats; |
| } else { |
| // When tethering offload is in use, nativeIfaceStats does not contain usage from |
| // offload, add it back here. |
| // When tethering offload is not in use, nativeIfaceStats contains tethering usage. |
| // this does not cause double-counting of tethering traffic, because |
| // NetdTetheringStatsProvider returns zero NetworkStats |
| // when called with STATS_PER_IFACE. |
| return nativeIfaceStats + getTetherStats(iface, type); |
| } |
| } |
| |
| @Override |
| public long getTotalStats(int type) { |
| long nativeTotalStats = nativeGetTotalStat(type, checkBpfStatsEnable()); |
| if (nativeTotalStats == -1) { |
| return nativeTotalStats; |
| } else { |
| // Refer to comment in getIfaceStats |
| return nativeTotalStats + getTetherStats(IFACE_ALL, type); |
| } |
| } |
| |
| private long getTetherStats(String iface, int type) { |
| final NetworkStats tetherSnapshot; |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| tetherSnapshot = getNetworkStatsTethering(STATS_PER_IFACE); |
| } catch (RemoteException e) { |
| Slog.w(TAG, "Error get TetherStats: " + e); |
| return 0; |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| HashSet<String> limitIfaces; |
| if (iface == IFACE_ALL) { |
| limitIfaces = null; |
| } else { |
| limitIfaces = new HashSet<String>(); |
| limitIfaces.add(iface); |
| } |
| NetworkStats.Entry entry = tetherSnapshot.getTotal(null, limitIfaces); |
| if (LOGD) Slog.d(TAG, "TetherStats: iface=" + iface + " type=" + type + |
| " entry=" + entry); |
| switch (type) { |
| case 0: // TYPE_RX_BYTES |
| return entry.rxBytes; |
| case 1: // TYPE_RX_PACKETS |
| return entry.rxPackets; |
| case 2: // TYPE_TX_BYTES |
| return entry.txBytes; |
| case 3: // TYPE_TX_PACKETS |
| return entry.txPackets; |
| default: |
| return 0; |
| } |
| } |
| |
| private boolean checkBpfStatsEnable() { |
| return mUseBpfTrafficStats; |
| } |
| |
| /** |
| * Update {@link NetworkStatsRecorder} and {@link #mGlobalAlertBytes} to |
| * reflect current {@link #mPersistThreshold} value. Always defers to |
| * {@link Global} values when defined. |
| */ |
| @GuardedBy("mStatsLock") |
| private void updatePersistThresholdsLocked() { |
| mDevRecorder.setPersistThreshold(mSettings.getDevPersistBytes(mPersistThreshold)); |
| mXtRecorder.setPersistThreshold(mSettings.getXtPersistBytes(mPersistThreshold)); |
| mUidRecorder.setPersistThreshold(mSettings.getUidPersistBytes(mPersistThreshold)); |
| mUidTagRecorder.setPersistThreshold(mSettings.getUidTagPersistBytes(mPersistThreshold)); |
| mGlobalAlertBytes = mSettings.getGlobalAlertBytes(mPersistThreshold); |
| } |
| |
| /** |
| * Receiver that watches for {@link Tethering} to claim interface pairs. |
| */ |
| private BroadcastReceiver mTetherReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and verified CONNECTIVITY_INTERNAL |
| // permission above. |
| performPoll(FLAG_PERSIST_NETWORK); |
| } |
| }; |
| |
| private BroadcastReceiver mPollReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and verified UPDATE_DEVICE_STATS |
| // permission above. |
| performPoll(FLAG_PERSIST_ALL); |
| |
| // verify that we're watching global alert |
| registerGlobalAlert(); |
| } |
| }; |
| |
| private BroadcastReceiver mRemovedReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // on background handler thread, and UID_REMOVED is protected |
| // broadcast. |
| |
| final int uid = intent.getIntExtra(EXTRA_UID, -1); |
| if (uid == -1) return; |
| |
| synchronized (mStatsLock) { |
| mWakeLock.acquire(); |
| try { |
| removeUidsLocked(uid); |
| } finally { |
| mWakeLock.release(); |
| } |
| } |
| } |
| }; |
| |
| private BroadcastReceiver mUserReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // On background handler thread, and USER_REMOVED is protected |
| // broadcast. |
| |
| final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, -1); |
| if (userId == -1) return; |
| |
| synchronized (mStatsLock) { |
| mWakeLock.acquire(); |
| try { |
| removeUserLocked(userId); |
| } finally { |
| mWakeLock.release(); |
| } |
| } |
| } |
| }; |
| |
| private BroadcastReceiver mShutdownReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // SHUTDOWN is protected broadcast. |
| synchronized (mStatsLock) { |
| shutdownLocked(); |
| } |
| } |
| }; |
| |
| /** |
| * 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)) { |
| // kick off background poll to collect network stats unless there is already |
| // such a call pending; UID stats are handled during normal polling interval. |
| if (!mHandler.hasMessages(MSG_PERFORM_POLL_REGISTER_ALERT)) { |
| mHandler.sendEmptyMessageDelayed(MSG_PERFORM_POLL_REGISTER_ALERT, |
| PERFORM_POLL_DELAY_MS); |
| } |
| } |
| } |
| }; |
| |
| private void updateIfaces( |
| Network[] defaultNetworks, |
| VpnInfo[] vpnArray, |
| NetworkState[] networkStates, |
| String activeIface) { |
| synchronized (mStatsLock) { |
| mWakeLock.acquire(); |
| try { |
| mVpnInfos = vpnArray; |
| mActiveIface = activeIface; |
| updateIfacesLocked(defaultNetworks, networkStates); |
| } finally { |
| mWakeLock.release(); |
| } |
| } |
| } |
| |
| /** |
| * Inspect all current {@link NetworkState} to derive mapping from {@code |
| * iface} to {@link NetworkStatsHistory}. When multiple {@link NetworkInfo} |
| * are active on a single {@code iface}, they are combined under a single |
| * {@link NetworkIdentitySet}. |
| */ |
| @GuardedBy("mStatsLock") |
| private void updateIfacesLocked(Network[] defaultNetworks, NetworkState[] states) { |
| if (!mSystemReady) return; |
| if (LOGV) Slog.v(TAG, "updateIfacesLocked()"); |
| |
| // take one last stats snapshot before updating iface mapping. this |
| // isn't perfect, since the kernel may already be counting traffic from |
| // the updated network. |
| |
| // poll, but only persist network stats to keep codepath fast. UID stats |
| // will be persisted during next alarm poll event. |
| performPollLocked(FLAG_PERSIST_NETWORK); |
| |
| // Rebuild active interfaces based on connected networks |
| mActiveIfaces.clear(); |
| mActiveUidIfaces.clear(); |
| if (defaultNetworks != null) { |
| // Caller is ConnectivityService. Update the list of default networks. |
| mDefaultNetworks = defaultNetworks; |
| } |
| |
| final ArraySet<String> mobileIfaces = new ArraySet<>(); |
| for (NetworkState state : states) { |
| if (state.networkInfo.isConnected()) { |
| final boolean isMobile = isNetworkTypeMobile(state.networkInfo.getType()); |
| final boolean isDefault = ArrayUtils.contains(mDefaultNetworks, state.network); |
| final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state, |
| isDefault); |
| |
| // Traffic occurring on the base interface is always counted for |
| // both total usage and UID details. |
| final String baseIface = state.linkProperties.getInterfaceName(); |
| if (baseIface != null) { |
| findOrCreateNetworkIdentitySet(mActiveIfaces, baseIface).add(ident); |
| findOrCreateNetworkIdentitySet(mActiveUidIfaces, baseIface).add(ident); |
| |
| // Build a separate virtual interface for VT (Video Telephony) data usage. |
| // Only do this when IMS is not metered, but VT is metered. |
| // If IMS is metered, then the IMS network usage has already included VT usage. |
| // VT is considered always metered in framework's layer. If VT is not metered |
| // per carrier's policy, modem will report 0 usage for VT calls. |
| if (state.networkCapabilities.hasCapability( |
| NetworkCapabilities.NET_CAPABILITY_IMS) && !ident.getMetered()) { |
| |
| // Copy the identify from IMS one but mark it as metered. |
| NetworkIdentity vtIdent = new NetworkIdentity(ident.getType(), |
| ident.getSubType(), ident.getSubscriberId(), ident.getNetworkId(), |
| ident.getRoaming(), true /* metered */, |
| true /* onDefaultNetwork */); |
| findOrCreateNetworkIdentitySet(mActiveIfaces, VT_INTERFACE).add(vtIdent); |
| findOrCreateNetworkIdentitySet(mActiveUidIfaces, VT_INTERFACE).add(vtIdent); |
| } |
| |
| if (isMobile) { |
| mobileIfaces.add(baseIface); |
| } |
| } |
| |
| // Traffic occurring on stacked interfaces is usually clatd. |
| // UID stats are always counted on the stacked interface and never |
| // on the base interface, because the packets on the base interface |
| // do not actually match application sockets until they are translated. |
| // |
| // Interface stats are more complicated. Packets subject to BPF offload |
| // never appear on the base interface and only appear on the stacked |
| // interface, so to ensure those packets increment interface stats, interface |
| // stats from stacked interfaces must be collected. |
| final List<LinkProperties> stackedLinks = state.linkProperties.getStackedLinks(); |
| for (LinkProperties stackedLink : stackedLinks) { |
| final String stackedIface = stackedLink.getInterfaceName(); |
| if (stackedIface != null) { |
| if (mUseBpfTrafficStats) { |
| findOrCreateNetworkIdentitySet(mActiveIfaces, stackedIface).add(ident); |
| } |
| findOrCreateNetworkIdentitySet(mActiveUidIfaces, stackedIface).add(ident); |
| if (isMobile) { |
| mobileIfaces.add(stackedIface); |
| } |
| |
| NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); |
| } |
| } |
| } |
| } |
| |
| mMobileIfaces = mobileIfaces.toArray(new String[mobileIfaces.size()]); |
| } |
| |
| private static <K> NetworkIdentitySet findOrCreateNetworkIdentitySet( |
| ArrayMap<K, NetworkIdentitySet> map, K key) { |
| NetworkIdentitySet ident = map.get(key); |
| if (ident == null) { |
| ident = new NetworkIdentitySet(); |
| map.put(key, ident); |
| } |
| return ident; |
| } |
| |
| @GuardedBy("mStatsLock") |
| private void recordSnapshotLocked(long currentTime) throws RemoteException { |
| // snapshot and record current counters; read UID stats first to |
| // avoid over counting dev stats. |
| Trace.traceBegin(TRACE_TAG_NETWORK, "snapshotUid"); |
| final NetworkStats uidSnapshot = getNetworkStatsUidDetail(INTERFACES_ALL); |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| Trace.traceBegin(TRACE_TAG_NETWORK, "snapshotXt"); |
| final NetworkStats xtSnapshot = getNetworkStatsXt(); |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| Trace.traceBegin(TRACE_TAG_NETWORK, "snapshotDev"); |
| final NetworkStats devSnapshot = mNetworkManager.getNetworkStatsSummaryDev(); |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| |
| // Tethering snapshot for dev and xt stats. Counts per-interface data from tethering stats |
| // providers that isn't already counted by dev and XT stats. |
| Trace.traceBegin(TRACE_TAG_NETWORK, "snapshotTether"); |
| final NetworkStats tetherSnapshot = getNetworkStatsTethering(STATS_PER_IFACE); |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| xtSnapshot.combineAllValues(tetherSnapshot); |
| devSnapshot.combineAllValues(tetherSnapshot); |
| |
| // For xt/dev, we pass a null VPN array because usage is aggregated by UID, so VPN traffic |
| // can't be reattributed to responsible apps. |
| Trace.traceBegin(TRACE_TAG_NETWORK, "recordDev"); |
| mDevRecorder.recordSnapshotLocked( |
| devSnapshot, mActiveIfaces, null /* vpnArray */, currentTime); |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| Trace.traceBegin(TRACE_TAG_NETWORK, "recordXt"); |
| mXtRecorder.recordSnapshotLocked( |
| xtSnapshot, mActiveIfaces, null /* vpnArray */, currentTime); |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| |
| // For per-UID stats, pass the VPN info so VPN traffic is reattributed to responsible apps. |
| VpnInfo[] vpnArray = mVpnInfos; |
| Trace.traceBegin(TRACE_TAG_NETWORK, "recordUid"); |
| mUidRecorder.recordSnapshotLocked(uidSnapshot, mActiveUidIfaces, vpnArray, currentTime); |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| Trace.traceBegin(TRACE_TAG_NETWORK, "recordUidTag"); |
| mUidTagRecorder.recordSnapshotLocked(uidSnapshot, mActiveUidIfaces, vpnArray, currentTime); |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| |
| // We need to make copies of member fields that are sent to the observer to avoid |
| // a race condition between the service handler thread and the observer's |
| mStatsObservers.updateStats(xtSnapshot, uidSnapshot, new ArrayMap<>(mActiveIfaces), |
| new ArrayMap<>(mActiveUidIfaces), vpnArray, currentTime); |
| } |
| |
| /** |
| * Bootstrap initial stats snapshot, usually during {@link #systemReady()} |
| * so we have baseline values without double-counting. |
| */ |
| @GuardedBy("mStatsLock") |
| private void bootstrapStatsLocked() { |
| final long currentTime = mClock.millis(); |
| |
| try { |
| recordSnapshotLocked(currentTime); |
| } catch (IllegalStateException e) { |
| Slog.w(TAG, "problem reading network stats: " + e); |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| } |
| } |
| |
| private void performPoll(int flags) { |
| synchronized (mStatsLock) { |
| mWakeLock.acquire(); |
| |
| try { |
| performPollLocked(flags); |
| } finally { |
| mWakeLock.release(); |
| } |
| } |
| } |
| |
| /** |
| * Periodic poll operation, reading current statistics and recording into |
| * {@link NetworkStatsHistory}. |
| */ |
| @GuardedBy("mStatsLock") |
| private void performPollLocked(int flags) { |
| if (!mSystemReady) return; |
| if (LOGV) Slog.v(TAG, "performPollLocked(flags=0x" + Integer.toHexString(flags) + ")"); |
| Trace.traceBegin(TRACE_TAG_NETWORK, "performPollLocked"); |
| |
| final boolean persistNetwork = (flags & FLAG_PERSIST_NETWORK) != 0; |
| final boolean persistUid = (flags & FLAG_PERSIST_UID) != 0; |
| final boolean persistForce = (flags & FLAG_PERSIST_FORCE) != 0; |
| |
| // TODO: consider marking "untrusted" times in historical stats |
| final long currentTime = mClock.millis(); |
| |
| try { |
| recordSnapshotLocked(currentTime); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem reading network stats", e); |
| return; |
| } catch (RemoteException e) { |
| // ignored; service lives in system_server |
| return; |
| } |
| |
| // persist any pending data depending on requested flags |
| Trace.traceBegin(TRACE_TAG_NETWORK, "[persisting]"); |
| if (persistForce) { |
| mDevRecorder.forcePersistLocked(currentTime); |
| mXtRecorder.forcePersistLocked(currentTime); |
| mUidRecorder.forcePersistLocked(currentTime); |
| mUidTagRecorder.forcePersistLocked(currentTime); |
| } else { |
| if (persistNetwork) { |
| mDevRecorder.maybePersistLocked(currentTime); |
| mXtRecorder.maybePersistLocked(currentTime); |
| } |
| if (persistUid) { |
| mUidRecorder.maybePersistLocked(currentTime); |
| mUidTagRecorder.maybePersistLocked(currentTime); |
| } |
| } |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| |
| if (mSettings.getSampleEnabled()) { |
| // sample stats after each full poll |
| performSampleLocked(); |
| } |
| |
| // finally, dispatch updated event to any listeners |
| final Intent updatedIntent = new Intent(ACTION_NETWORK_STATS_UPDATED); |
| updatedIntent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| mContext.sendBroadcastAsUser(updatedIntent, UserHandle.ALL, |
| READ_NETWORK_USAGE_HISTORY); |
| |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| } |
| |
| /** |
| * Sample recent statistics summary into {@link EventLog}. |
| */ |
| @GuardedBy("mStatsLock") |
| private void performSampleLocked() { |
| // TODO: migrate trustedtime fixes to separate binary log events |
| final long currentTime = mClock.millis(); |
| |
| NetworkTemplate template; |
| NetworkStats.Entry devTotal; |
| NetworkStats.Entry xtTotal; |
| NetworkStats.Entry uidTotal; |
| |
| // collect mobile sample |
| template = buildTemplateMobileWildcard(); |
| devTotal = mDevRecorder.getTotalSinceBootLocked(template); |
| xtTotal = mXtRecorder.getTotalSinceBootLocked(template); |
| uidTotal = mUidRecorder.getTotalSinceBootLocked(template); |
| |
| EventLogTags.writeNetstatsMobileSample( |
| devTotal.rxBytes, devTotal.rxPackets, devTotal.txBytes, devTotal.txPackets, |
| xtTotal.rxBytes, xtTotal.rxPackets, xtTotal.txBytes, xtTotal.txPackets, |
| uidTotal.rxBytes, uidTotal.rxPackets, uidTotal.txBytes, uidTotal.txPackets, |
| currentTime); |
| |
| // collect wifi sample |
| template = buildTemplateWifiWildcard(); |
| devTotal = mDevRecorder.getTotalSinceBootLocked(template); |
| xtTotal = mXtRecorder.getTotalSinceBootLocked(template); |
| uidTotal = mUidRecorder.getTotalSinceBootLocked(template); |
| |
| EventLogTags.writeNetstatsWifiSample( |
| devTotal.rxBytes, devTotal.rxPackets, devTotal.txBytes, devTotal.txPackets, |
| xtTotal.rxBytes, xtTotal.rxPackets, xtTotal.txBytes, xtTotal.txPackets, |
| uidTotal.rxBytes, uidTotal.rxPackets, uidTotal.txBytes, uidTotal.txPackets, |
| currentTime); |
| } |
| |
| /** |
| * Clean up {@link #mUidRecorder} after UID is removed. |
| */ |
| @GuardedBy("mStatsLock") |
| private void removeUidsLocked(int... uids) { |
| if (LOGV) Slog.v(TAG, "removeUidsLocked() for UIDs " + Arrays.toString(uids)); |
| |
| // Perform one last poll before removing |
| performPollLocked(FLAG_PERSIST_ALL); |
| |
| mUidRecorder.removeUidsLocked(uids); |
| mUidTagRecorder.removeUidsLocked(uids); |
| |
| // Clear kernel stats associated with UID |
| for (int uid : uids) { |
| resetKernelUidStats(uid); |
| } |
| } |
| |
| /** |
| * Clean up {@link #mUidRecorder} after user is removed. |
| */ |
| @GuardedBy("mStatsLock") |
| private void removeUserLocked(int userId) { |
| if (LOGV) Slog.v(TAG, "removeUserLocked() for userId=" + userId); |
| |
| // Build list of UIDs that we should clean up |
| int[] uids = new int[0]; |
| final List<ApplicationInfo> apps = mContext.getPackageManager().getInstalledApplications( |
| PackageManager.MATCH_ANY_USER |
| | PackageManager.MATCH_DISABLED_COMPONENTS); |
| for (ApplicationInfo app : apps) { |
| final int uid = UserHandle.getUid(userId, app.uid); |
| uids = ArrayUtils.appendInt(uids, uid); |
| } |
| |
| removeUidsLocked(uids); |
| } |
| |
| private class NetworkStatsManagerInternalImpl extends NetworkStatsManagerInternal { |
| @Override |
| public long getNetworkTotalBytes(NetworkTemplate template, long start, long end) { |
| Trace.traceBegin(TRACE_TAG_NETWORK, "getNetworkTotalBytes"); |
| try { |
| return NetworkStatsService.this.getNetworkTotalBytes(template, start, end); |
| } finally { |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| } |
| } |
| |
| @Override |
| public NetworkStats getNetworkUidBytes(NetworkTemplate template, long start, long end) { |
| Trace.traceBegin(TRACE_TAG_NETWORK, "getNetworkUidBytes"); |
| try { |
| return NetworkStatsService.this.getNetworkUidBytes(template, start, end); |
| } finally { |
| Trace.traceEnd(TRACE_TAG_NETWORK); |
| } |
| } |
| |
| @Override |
| public void setUidForeground(int uid, boolean uidForeground) { |
| NetworkStatsService.this.setUidForeground(uid, uidForeground); |
| } |
| |
| @Override |
| public void advisePersistThreshold(long thresholdBytes) { |
| NetworkStatsService.this.advisePersistThreshold(thresholdBytes); |
| } |
| |
| @Override |
| public void forceUpdate() { |
| NetworkStatsService.this.forceUpdate(); |
| } |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter rawWriter, String[] args) { |
| if (!DumpUtils.checkDumpPermission(mContext, TAG, rawWriter)) return; |
| |
| long duration = DateUtils.DAY_IN_MILLIS; |
| final HashSet<String> argSet = new HashSet<String>(); |
| for (String arg : args) { |
| argSet.add(arg); |
| |
| if (arg.startsWith("--duration=")) { |
| try { |
| duration = Long.parseLong(arg.substring(11)); |
| } catch (NumberFormatException ignored) { |
| } |
| } |
| } |
| |
| // usage: dumpsys netstats --full --uid --tag --poll --checkin |
| final boolean poll = argSet.contains("--poll") || argSet.contains("poll"); |
| final boolean checkin = argSet.contains("--checkin"); |
| final boolean fullHistory = argSet.contains("--full") || argSet.contains("full"); |
| final boolean includeUid = argSet.contains("--uid") || argSet.contains("detail"); |
| final boolean includeTag = argSet.contains("--tag") || argSet.contains("detail"); |
| |
| final IndentingPrintWriter pw = new IndentingPrintWriter(rawWriter, " "); |
| |
| synchronized (mStatsLock) { |
| if (args.length > 0 && "--proto".equals(args[0])) { |
| // In this case ignore all other arguments. |
| dumpProtoLocked(fd); |
| return; |
| } |
| |
| if (poll) { |
| performPollLocked(FLAG_PERSIST_ALL | FLAG_PERSIST_FORCE); |
| pw.println("Forced poll"); |
| return; |
| } |
| |
| if (checkin) { |
| final long end = System.currentTimeMillis(); |
| final long start = end - duration; |
| |
| pw.print("v1,"); |
| pw.print(start / SECOND_IN_MILLIS); pw.print(','); |
| pw.print(end / SECOND_IN_MILLIS); pw.println(); |
| |
| pw.println("xt"); |
| mXtRecorder.dumpCheckin(rawWriter, start, end); |
| |
| if (includeUid) { |
| pw.println("uid"); |
| mUidRecorder.dumpCheckin(rawWriter, start, end); |
| } |
| if (includeTag) { |
| pw.println("tag"); |
| mUidTagRecorder.dumpCheckin(rawWriter, start, end); |
| } |
| return; |
| } |
| |
| pw.println("Active interfaces:"); |
| pw.increaseIndent(); |
| for (int i = 0; i < mActiveIfaces.size(); i++) { |
| pw.printPair("iface", mActiveIfaces.keyAt(i)); |
| pw.printPair("ident", mActiveIfaces.valueAt(i)); |
| pw.println(); |
| } |
| pw.decreaseIndent(); |
| |
| pw.println("Active UID interfaces:"); |
| pw.increaseIndent(); |
| for (int i = 0; i < mActiveUidIfaces.size(); i++) { |
| pw.printPair("iface", mActiveUidIfaces.keyAt(i)); |
| pw.printPair("ident", mActiveUidIfaces.valueAt(i)); |
| pw.println(); |
| } |
| pw.decreaseIndent(); |
| |
| // Get the top openSession callers |
| final SparseIntArray calls; |
| synchronized (mOpenSessionCallsPerUid) { |
| calls = mOpenSessionCallsPerUid.clone(); |
| } |
| |
| final int N = calls.size(); |
| final long[] values = new long[N]; |
| for (int j = 0; j < N; j++) { |
| values[j] = ((long) calls.valueAt(j) << 32) | calls.keyAt(j); |
| } |
| Arrays.sort(values); |
| |
| pw.println("Top openSession callers (uid=count):"); |
| pw.increaseIndent(); |
| final int end = Math.max(0, N - DUMP_STATS_SESSION_COUNT); |
| for (int j = N - 1; j >= end; j--) { |
| final int uid = (int) (values[j] & 0xffffffff); |
| final int count = (int) (values[j] >> 32); |
| pw.print(uid); pw.print("="); pw.println(count); |
| } |
| pw.decreaseIndent(); |
| pw.println(); |
| |
| pw.println("Dev stats:"); |
| pw.increaseIndent(); |
| mDevRecorder.dumpLocked(pw, fullHistory); |
| pw.decreaseIndent(); |
| |
| pw.println("Xt stats:"); |
| pw.increaseIndent(); |
| mXtRecorder.dumpLocked(pw, fullHistory); |
| pw.decreaseIndent(); |
| |
| if (includeUid) { |
| pw.println("UID stats:"); |
| pw.increaseIndent(); |
| mUidRecorder.dumpLocked(pw, fullHistory); |
| pw.decreaseIndent(); |
| } |
| |
| if (includeTag) { |
| pw.println("UID tag stats:"); |
| pw.increaseIndent(); |
| mUidTagRecorder.dumpLocked(pw, fullHistory); |
| pw.decreaseIndent(); |
| } |
| } |
| } |
| |
| @GuardedBy("mStatsLock") |
| private void dumpProtoLocked(FileDescriptor fd) { |
| final ProtoOutputStream proto = new ProtoOutputStream(fd); |
| |
| // TODO Right now it writes all history. Should it limit to the "since-boot" log? |
| |
| dumpInterfaces(proto, NetworkStatsServiceDumpProto.ACTIVE_INTERFACES, mActiveIfaces); |
| dumpInterfaces(proto, NetworkStatsServiceDumpProto.ACTIVE_UID_INTERFACES, mActiveUidIfaces); |
| mDevRecorder.writeToProtoLocked(proto, NetworkStatsServiceDumpProto.DEV_STATS); |
| mXtRecorder.writeToProtoLocked(proto, NetworkStatsServiceDumpProto.XT_STATS); |
| mUidRecorder.writeToProtoLocked(proto, NetworkStatsServiceDumpProto.UID_STATS); |
| mUidTagRecorder.writeToProtoLocked(proto, NetworkStatsServiceDumpProto.UID_TAG_STATS); |
| |
| proto.flush(); |
| } |
| |
| private static void dumpInterfaces(ProtoOutputStream proto, long tag, |
| ArrayMap<String, NetworkIdentitySet> ifaces) { |
| for (int i = 0; i < ifaces.size(); i++) { |
| final long start = proto.start(tag); |
| |
| proto.write(NetworkInterfaceProto.INTERFACE, ifaces.keyAt(i)); |
| ifaces.valueAt(i).writeToProto(proto, NetworkInterfaceProto.IDENTITIES); |
| |
| proto.end(start); |
| } |
| } |
| |
| /** |
| * Return snapshot of current UID statistics, including any |
| * {@link TrafficStats#UID_TETHERING}, video calling data usage, and {@link #mUidOperations} |
| * values. |
| * |
| * @param ifaces A list of interfaces the stats should be restricted to, or |
| * {@link NetworkStats#INTERFACES_ALL}. |
| */ |
| private NetworkStats getNetworkStatsUidDetail(String[] ifaces) |
| throws RemoteException { |
| |
| // TODO: remove 464xlat adjustments from NetworkStatsFactory and apply all at once here. |
| final NetworkStats uidSnapshot = mNetworkManager.getNetworkStatsUidDetail(UID_ALL, |
| ifaces); |
| |
| // fold tethering stats and operations into uid snapshot |
| final NetworkStats tetherSnapshot = getNetworkStatsTethering(STATS_PER_UID); |
| tetherSnapshot.filter(UID_ALL, ifaces, TAG_ALL); |
| NetworkStatsFactory.apply464xlatAdjustments(uidSnapshot, tetherSnapshot, |
| mUseBpfTrafficStats); |
| uidSnapshot.combineAllValues(tetherSnapshot); |
| |
| final TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService( |
| Context.TELEPHONY_SERVICE); |
| |
| // fold video calling data usage stats into uid snapshot |
| final NetworkStats vtStats = telephonyManager.getVtDataUsage(STATS_PER_UID); |
| if (vtStats != null) { |
| vtStats.filter(UID_ALL, ifaces, TAG_ALL); |
| NetworkStatsFactory.apply464xlatAdjustments(uidSnapshot, vtStats, |
| mUseBpfTrafficStats); |
| uidSnapshot.combineAllValues(vtStats); |
| } |
| |
| uidSnapshot.combineAllValues(mUidOperations); |
| |
| return uidSnapshot; |
| } |
| |
| /** |
| * Return snapshot of current XT statistics with video calling data usage statistics. |
| */ |
| private NetworkStats getNetworkStatsXt() throws RemoteException { |
| final NetworkStats xtSnapshot = mNetworkManager.getNetworkStatsSummaryXt(); |
| |
| final TelephonyManager telephonyManager = (TelephonyManager) mContext.getSystemService( |
| Context.TELEPHONY_SERVICE); |
| |
| // Merge video calling data usage into XT |
| final NetworkStats vtSnapshot = telephonyManager.getVtDataUsage(STATS_PER_IFACE); |
| if (vtSnapshot != null) { |
| xtSnapshot.combineAllValues(vtSnapshot); |
| } |
| |
| return xtSnapshot; |
| } |
| |
| /** |
| * Return snapshot of current tethering statistics. Will return empty |
| * {@link NetworkStats} if any problems are encountered. |
| */ |
| private NetworkStats getNetworkStatsTethering(int how) throws RemoteException { |
| try { |
| return mNetworkManager.getNetworkStatsTethering(how); |
| } catch (IllegalStateException e) { |
| Log.wtf(TAG, "problem reading network stats", e); |
| return new NetworkStats(0L, 10); |
| } |
| } |
| |
| @VisibleForTesting |
| static class HandlerCallback implements Handler.Callback { |
| private final NetworkStatsService mService; |
| |
| HandlerCallback(NetworkStatsService service) { |
| this.mService = service; |
| } |
| |
| @Override |
| public boolean handleMessage(Message msg) { |
| switch (msg.what) { |
| case MSG_PERFORM_POLL: { |
| mService.performPoll(FLAG_PERSIST_ALL); |
| return true; |
| } |
| case MSG_PERFORM_POLL_REGISTER_ALERT: { |
| mService.performPoll(FLAG_PERSIST_NETWORK); |
| mService.registerGlobalAlert(); |
| return true; |
| } |
| default: { |
| return false; |
| } |
| } |
| } |
| } |
| |
| private void assertSystemReady() { |
| if (!mSystemReady) { |
| throw new IllegalStateException("System not ready"); |
| } |
| } |
| |
| private void assertBandwidthControlEnabled() { |
| if (!isBandwidthControlEnabled()) { |
| throw new IllegalStateException("Bandwidth module disabled"); |
| } |
| } |
| |
| 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); |
| } |
| } |
| |
| private class DropBoxNonMonotonicObserver implements NonMonotonicObserver<String> { |
| @Override |
| public void foundNonMonotonic(NetworkStats left, int leftIndex, NetworkStats right, |
| int rightIndex, String cookie) { |
| Log.w(TAG, "Found non-monotonic values; saving to dropbox"); |
| |
| // record error for debugging |
| final StringBuilder builder = new StringBuilder(); |
| builder.append("found non-monotonic " + cookie + " values at left[" + leftIndex |
| + "] - right[" + rightIndex + "]\n"); |
| builder.append("left=").append(left).append('\n'); |
| builder.append("right=").append(right).append('\n'); |
| |
| mContext.getSystemService(DropBoxManager.class).addText(TAG_NETSTATS_ERROR, |
| builder.toString()); |
| } |
| |
| @Override |
| public void foundNonMonotonic( |
| NetworkStats stats, int statsIndex, String cookie) { |
| Log.w(TAG, "Found non-monotonic values; saving to dropbox"); |
| |
| final StringBuilder builder = new StringBuilder(); |
| builder.append("Found non-monotonic " + cookie + " values at [" + statsIndex + "]\n"); |
| builder.append("stats=").append(stats).append('\n'); |
| |
| mContext.getSystemService(DropBoxManager.class).addText(TAG_NETSTATS_ERROR, |
| builder.toString()); |
| } |
| } |
| |
| /** |
| * Default external settings that read from |
| * {@link android.provider.Settings.Global}. |
| */ |
| private static class DefaultNetworkStatsSettings implements NetworkStatsSettings { |
| private final ContentResolver mResolver; |
| |
| public DefaultNetworkStatsSettings(Context context) { |
| mResolver = checkNotNull(context.getContentResolver()); |
| // TODO: adjust these timings for production builds |
| } |
| |
| private long getGlobalLong(String name, long def) { |
| return Settings.Global.getLong(mResolver, name, def); |
| } |
| private boolean getGlobalBoolean(String name, boolean def) { |
| final int defInt = def ? 1 : 0; |
| return Settings.Global.getInt(mResolver, name, defInt) != 0; |
| } |
| |
| @Override |
| public long getPollInterval() { |
| return getGlobalLong(NETSTATS_POLL_INTERVAL, 30 * MINUTE_IN_MILLIS); |
| } |
| @Override |
| public long getGlobalAlertBytes(long def) { |
| return getGlobalLong(NETSTATS_GLOBAL_ALERT_BYTES, def); |
| } |
| @Override |
| public boolean getSampleEnabled() { |
| return getGlobalBoolean(NETSTATS_SAMPLE_ENABLED, true); |
| } |
| @Override |
| public boolean getAugmentEnabled() { |
| return getGlobalBoolean(NETSTATS_AUGMENT_ENABLED, true); |
| } |
| @Override |
| public Config getDevConfig() { |
| return new Config(getGlobalLong(NETSTATS_DEV_BUCKET_DURATION, HOUR_IN_MILLIS), |
| getGlobalLong(NETSTATS_DEV_ROTATE_AGE, 15 * DAY_IN_MILLIS), |
| getGlobalLong(NETSTATS_DEV_DELETE_AGE, 90 * DAY_IN_MILLIS)); |
| } |
| @Override |
| public Config getXtConfig() { |
| return getDevConfig(); |
| } |
| @Override |
| public Config getUidConfig() { |
| return new Config(getGlobalLong(NETSTATS_UID_BUCKET_DURATION, 2 * HOUR_IN_MILLIS), |
| getGlobalLong(NETSTATS_UID_ROTATE_AGE, 15 * DAY_IN_MILLIS), |
| getGlobalLong(NETSTATS_UID_DELETE_AGE, 90 * DAY_IN_MILLIS)); |
| } |
| @Override |
| public Config getUidTagConfig() { |
| return new Config(getGlobalLong(NETSTATS_UID_TAG_BUCKET_DURATION, 2 * HOUR_IN_MILLIS), |
| getGlobalLong(NETSTATS_UID_TAG_ROTATE_AGE, 5 * DAY_IN_MILLIS), |
| getGlobalLong(NETSTATS_UID_TAG_DELETE_AGE, 15 * DAY_IN_MILLIS)); |
| } |
| @Override |
| public long getDevPersistBytes(long def) { |
| return getGlobalLong(NETSTATS_DEV_PERSIST_BYTES, def); |
| } |
| @Override |
| public long getXtPersistBytes(long def) { |
| return getDevPersistBytes(def); |
| } |
| @Override |
| public long getUidPersistBytes(long def) { |
| return getGlobalLong(NETSTATS_UID_PERSIST_BYTES, def); |
| } |
| @Override |
| public long getUidTagPersistBytes(long def) { |
| return getGlobalLong(NETSTATS_UID_TAG_PERSIST_BYTES, def); |
| } |
| } |
| |
| private static int TYPE_RX_BYTES; |
| private static int TYPE_RX_PACKETS; |
| private static int TYPE_TX_BYTES; |
| private static int TYPE_TX_PACKETS; |
| private static int TYPE_TCP_RX_PACKETS; |
| private static int TYPE_TCP_TX_PACKETS; |
| |
| private static native long nativeGetTotalStat(int type, boolean useBpfStats); |
| private static native long nativeGetIfaceStat(String iface, int type, boolean useBpfStats); |
| private static native long nativeGetUidStat(int uid, int type, boolean useBpfStats); |
| } |
