Java程序
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2797行
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106.35 KB
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.server;
import static android.Manifest.permission.CONNECTIVITY_INTERNAL;
import static android.Manifest.permission.DUMP;
import static android.Manifest.permission.NETWORK_SETTINGS;
import static android.Manifest.permission.NETWORK_STACK;
import static android.Manifest.permission.SHUTDOWN;
import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_DOZABLE;
import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_NAME_DOZABLE;
import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_NAME_NONE;
import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_NAME_POWERSAVE;
import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_NAME_STANDBY;
import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_NONE;
import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_POWERSAVE;
import static android.net.NetworkPolicyManager.FIREWALL_CHAIN_STANDBY;
import static android.net.NetworkPolicyManager.FIREWALL_RULE_ALLOW;
import static android.net.NetworkPolicyManager.FIREWALL_RULE_DEFAULT;
import static android.net.NetworkPolicyManager.FIREWALL_RULE_DENY;
import static android.net.NetworkPolicyManager.FIREWALL_TYPE_BLACKLIST;
import static android.net.NetworkPolicyManager.FIREWALL_TYPE_WHITELIST;
import static android.net.NetworkStats.SET_DEFAULT;
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.TrafficStats.UID_TETHERING;
import static com.android.server.NetworkManagementService.NetdResponseCode.ClatdStatusResult;
import static com.android.server.NetworkManagementService.NetdResponseCode.InterfaceGetCfgResult;
import static com.android.server.NetworkManagementService.NetdResponseCode.InterfaceListResult;
import static com.android.server.NetworkManagementService.NetdResponseCode.IpFwdStatusResult;
import static com.android.server.NetworkManagementService.NetdResponseCode.TetherDnsFwdTgtListResult;
import static com.android.server.NetworkManagementService.NetdResponseCode.TetherInterfaceListResult;
import static com.android.server.NetworkManagementService.NetdResponseCode.TetherStatusResult;
import static com.android.server.NetworkManagementService.NetdResponseCode.TetheringStatsListResult;
import static com.android.server.NetworkManagementService.NetdResponseCode.TtyListResult;
import static com.android.server.NetworkManagementSocketTagger.PROP_QTAGUID_ENABLED;
import android.annotation.NonNull;
import android.app.ActivityManager;
import android.content.ContentResolver;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.INetd;
import android.net.INetworkManagementEventObserver;
import android.net.ITetheringStatsProvider;
import android.net.InterfaceConfiguration;
import android.net.IpPrefix;
import android.net.LinkAddress;
import android.net.Network;
import android.net.NetworkPolicyManager;
import android.net.NetworkStats;
import android.net.NetworkUtils;
import android.net.RouteInfo;
import android.net.UidRange;
import android.net.util.NetdService;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiConfiguration.KeyMgmt;
import android.os.BatteryStats;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.INetworkActivityListener;
import android.os.INetworkManagementService;
import android.os.PersistableBundle;
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.ServiceSpecificException;
import android.os.StrictMode;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.Trace;
import android.provider.Settings;
import android.telephony.DataConnectionRealTimeInfo;
import android.telephony.PhoneStateListener;
import android.telephony.SubscriptionManager;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.util.Log;
import android.util.Slog;
import android.util.SparseBooleanArray;
import android.util.SparseIntArray;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.app.IBatteryStats;
import com.android.internal.net.NetworkStatsFactory;
import com.android.internal.util.DumpUtils;
import com.android.internal.util.HexDump;
import com.android.internal.util.Preconditions;
import com.android.server.NativeDaemonConnector.Command;
import com.android.server.NativeDaemonConnector.SensitiveArg;
import com.google.android.collect.Maps;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.StringTokenizer;
import java.util.concurrent.CountDownLatch;
/**
* @hide
*/
public class NetworkManagementService extends INetworkManagementService.Stub
implements Watchdog.Monitor {
/**
* Helper class that encapsulates NetworkManagementService dependencies and makes them
* easier to mock in unit tests.
*/
static class SystemServices {
public IBinder getService(String name) {
return ServiceManager.getService(name);
}
public void registerLocalService(NetworkManagementInternal nmi) {
LocalServices.addService(NetworkManagementInternal.class, nmi);
}
public INetd getNetd() {
return NetdService.get();
}
}
private static final String TAG = "NetworkManagement";
private static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG);
private static final String NETD_TAG = "NetdConnector";
static final String NETD_SERVICE_NAME = "netd";
private static final int MAX_UID_RANGES_PER_COMMAND = 10;
/**
* Name representing {@link #setGlobalAlert(long)} limit when delivered to
* {@link INetworkManagementEventObserver#limitReached(String, String)}.
*/
public static final String LIMIT_GLOBAL_ALERT = "globalAlert";
/**
* String to pass to netd to indicate that a network is only accessible
* to apps that have the CHANGE_NETWORK_STATE permission.
*/
public static final String PERMISSION_NETWORK = "NETWORK";
/**
* String to pass to netd to indicate that a network is only
* accessible to system apps and those with the CONNECTIVITY_INTERNAL
* permission.
*/
public static final String PERMISSION_SYSTEM = "SYSTEM";
static class NetdResponseCode {
/* Keep in sync with system/netd/server/ResponseCode.h */
public static final int InterfaceListResult = 110;
public static final int TetherInterfaceListResult = 111;
public static final int TetherDnsFwdTgtListResult = 112;
public static final int TtyListResult = 113;
public static final int TetheringStatsListResult = 114;
public static final int TetherStatusResult = 210;
public static final int IpFwdStatusResult = 211;
public static final int InterfaceGetCfgResult = 213;
public static final int SoftapStatusResult = 214;
public static final int InterfaceRxCounterResult = 216;
public static final int InterfaceTxCounterResult = 217;
public static final int QuotaCounterResult = 220;
public static final int TetheringStatsResult = 221;
public static final int DnsProxyQueryResult = 222;
public static final int ClatdStatusResult = 223;
public static final int InterfaceChange = 600;
public static final int BandwidthControl = 601;
public static final int InterfaceClassActivity = 613;
public static final int InterfaceAddressChange = 614;
public static final int InterfaceDnsServerInfo = 615;
public static final int RouteChange = 616;
public static final int StrictCleartext = 617;
}
/**
* String indicating a softap command.
*/
static final String SOFT_AP_COMMAND = "softap";
/**
* String passed back to netd connector indicating softap command success.
*/
static final String SOFT_AP_COMMAND_SUCCESS = "Ok";
static final int DAEMON_MSG_MOBILE_CONN_REAL_TIME_INFO = 1;
/**
* Binder context for this service
*/
private final Context mContext;
/**
* connector object for communicating with netd
*/
private final NativeDaemonConnector mConnector;
private final Handler mFgHandler;
private final Handler mDaemonHandler;
private final SystemServices mServices;
private INetd mNetdService;
private IBatteryStats mBatteryStats;
private final Thread mThread;
private CountDownLatch mConnectedSignal = new CountDownLatch(1);
private final RemoteCallbackList<INetworkManagementEventObserver> mObservers =
new RemoteCallbackList<>();
private final NetworkStatsFactory mStatsFactory = new NetworkStatsFactory();
@GuardedBy("mTetheringStatsProviders")
private final HashMap<ITetheringStatsProvider, String>
mTetheringStatsProviders = Maps.newHashMap();
/**
* If both locks need to be held, then they should be obtained in the order:
* first {@link #mQuotaLock} and then {@link #mRulesLock}.
*/
private final Object mQuotaLock = new Object();
private final Object mRulesLock = new Object();
/** Set of interfaces with active quotas. */
@GuardedBy("mQuotaLock")
private HashMap<String, Long> mActiveQuotas = Maps.newHashMap();
/** Set of interfaces with active alerts. */
@GuardedBy("mQuotaLock")
private HashMap<String, Long> mActiveAlerts = Maps.newHashMap();
/** Set of UIDs blacklisted on metered networks. */
@GuardedBy("mRulesLock")
private SparseBooleanArray mUidRejectOnMetered = new SparseBooleanArray();
/** Set of UIDs whitelisted on metered networks. */
@GuardedBy("mRulesLock")
private SparseBooleanArray mUidAllowOnMetered = new SparseBooleanArray();
/** Set of UIDs with cleartext penalties. */
@GuardedBy("mQuotaLock")
private SparseIntArray mUidCleartextPolicy = new SparseIntArray();
/** Set of UIDs that are to be blocked/allowed by firewall controller. */
@GuardedBy("mRulesLock")
private SparseIntArray mUidFirewallRules = new SparseIntArray();
/**
* Set of UIDs that are to be blocked/allowed by firewall controller. This set of Ids matches
* to application idles.
*/
@GuardedBy("mRulesLock")
private SparseIntArray mUidFirewallStandbyRules = new SparseIntArray();
/**
* Set of UIDs that are to be blocked/allowed by firewall controller. This set of Ids matches
* to device idles.
*/
@GuardedBy("mRulesLock")
private SparseIntArray mUidFirewallDozableRules = new SparseIntArray();
/**
* Set of UIDs that are to be blocked/allowed by firewall controller. This set of Ids matches
* to device on power-save mode.
*/
@GuardedBy("mRulesLock")
private SparseIntArray mUidFirewallPowerSaveRules = new SparseIntArray();
/** Set of states for the child firewall chains. True if the chain is active. */
@GuardedBy("mRulesLock")
final SparseBooleanArray mFirewallChainStates = new SparseBooleanArray();
@GuardedBy("mQuotaLock")
private volatile boolean mDataSaverMode;
private final Object mIdleTimerLock = new Object();
/** Set of interfaces with active idle timers. */
private static class IdleTimerParams {
public final int timeout;
public final int type;
public int networkCount;
IdleTimerParams(int timeout, int type) {
this.timeout = timeout;
this.type = type;
this.networkCount = 1;
}
}
private HashMap<String, IdleTimerParams> mActiveIdleTimers = Maps.newHashMap();
private volatile boolean mBandwidthControlEnabled;
private volatile boolean mFirewallEnabled;
private volatile boolean mStrictEnabled;
private boolean mMobileActivityFromRadio = false;
private int mLastPowerStateFromRadio = DataConnectionRealTimeInfo.DC_POWER_STATE_LOW;
private int mLastPowerStateFromWifi = DataConnectionRealTimeInfo.DC_POWER_STATE_LOW;
private final RemoteCallbackList<INetworkActivityListener> mNetworkActivityListeners =
new RemoteCallbackList<>();
private boolean mNetworkActive;
/**
* Constructs a new NetworkManagementService instance
*
* @param context Binder context for this service
*/
private NetworkManagementService(
Context context, String socket, SystemServices services) {
mContext = context;
mServices = services;
// make sure this is on the same looper as our NativeDaemonConnector for sync purposes
mFgHandler = new Handler(FgThread.get().getLooper());
// Don't need this wake lock, since we now have a time stamp for when
// the network actually went inactive. (It might be nice to still do this,
// but I don't want to do it through the power manager because that pollutes the
// battery stats history with pointless noise.)
//PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = null; //pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, NETD_TAG);
mConnector = new NativeDaemonConnector(
new NetdCallbackReceiver(), socket, 10, NETD_TAG, 160, wl,
FgThread.get().getLooper());
mThread = new Thread(mConnector, NETD_TAG);
mDaemonHandler = new Handler(FgThread.get().getLooper());
// Add ourself to the Watchdog monitors.
Watchdog.getInstance().addMonitor(this);
mServices.registerLocalService(new LocalService());
synchronized (mTetheringStatsProviders) {
mTetheringStatsProviders.put(new NetdTetheringStatsProvider(), "netd");
}
}
@VisibleForTesting
NetworkManagementService() {
mConnector = null;
mContext = null;
mDaemonHandler = null;
mFgHandler = null;
mThread = null;
mServices = null;
}
static NetworkManagementService create(Context context, String socket, SystemServices services)
throws InterruptedException {
final NetworkManagementService service =
new NetworkManagementService(context, socket, services);
final CountDownLatch connectedSignal = service.mConnectedSignal;
if (DBG) Slog.d(TAG, "Creating NetworkManagementService");
service.mThread.start();
if (DBG) Slog.d(TAG, "Awaiting socket connection");
connectedSignal.await();
if (DBG) Slog.d(TAG, "Connected");
if (DBG) Slog.d(TAG, "Connecting native netd service");
service.connectNativeNetdService();
if (DBG) Slog.d(TAG, "Connected");
return service;
}
public static NetworkManagementService create(Context context) throws InterruptedException {
return create(context, NETD_SERVICE_NAME, new SystemServices());
}
public void systemReady() {
if (DBG) {
final long start = System.currentTimeMillis();
prepareNativeDaemon();
final long delta = System.currentTimeMillis() - start;
Slog.d(TAG, "Prepared in " + delta + "ms");
return;
} else {
prepareNativeDaemon();
}
}
private IBatteryStats getBatteryStats() {
synchronized (this) {
if (mBatteryStats != null) {
return mBatteryStats;
}
mBatteryStats =
IBatteryStats.Stub.asInterface(mServices.getService(BatteryStats.SERVICE_NAME));
return mBatteryStats;
}
}
@Override
public void registerObserver(INetworkManagementEventObserver observer) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
mObservers.register(observer);
}
@Override
public void unregisterObserver(INetworkManagementEventObserver observer) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
mObservers.unregister(observer);
}
@FunctionalInterface
private interface NetworkManagementEventCallback {
public void sendCallback(INetworkManagementEventObserver o) throws RemoteException;
}
private void invokeForAllObservers(NetworkManagementEventCallback eventCallback) {
final int length = mObservers.beginBroadcast();
try {
for (int i = 0; i < length; i++) {
try {
eventCallback.sendCallback(mObservers.getBroadcastItem(i));
} catch (RemoteException | RuntimeException e) {
}
}
} finally {
mObservers.finishBroadcast();
}
}
/**
* Notify our observers of an interface status change
*/
private void notifyInterfaceStatusChanged(String iface, boolean up) {
invokeForAllObservers(o -> o.interfaceStatusChanged(iface, up));
}
/**
* Notify our observers of an interface link state change
* (typically, an Ethernet cable has been plugged-in or unplugged).
*/
private void notifyInterfaceLinkStateChanged(String iface, boolean up) {
invokeForAllObservers(o -> o.interfaceLinkStateChanged(iface, up));
}
/**
* Notify our observers of an interface addition.
*/
private void notifyInterfaceAdded(String iface) {
invokeForAllObservers(o -> o.interfaceAdded(iface));
}
/**
* Notify our observers of an interface removal.
*/
private void notifyInterfaceRemoved(String iface) {
// netd already clears out quota and alerts for removed ifaces; update
// our sanity-checking state.
mActiveAlerts.remove(iface);
mActiveQuotas.remove(iface);
invokeForAllObservers(o -> o.interfaceRemoved(iface));
}
/**
* Notify our observers of a limit reached.
*/
private void notifyLimitReached(String limitName, String iface) {
invokeForAllObservers(o -> o.limitReached(limitName, iface));
}
/**
* Notify our observers of a change in the data activity state of the interface
*/
private void notifyInterfaceClassActivity(int type, int powerState, long tsNanos,
int uid, boolean fromRadio) {
final boolean isMobile = ConnectivityManager.isNetworkTypeMobile(type);
if (isMobile) {
if (!fromRadio) {
if (mMobileActivityFromRadio) {
// If this call is not coming from a report from the radio itself, but we
// have previously received reports from the radio, then we will take the
// power state to just be whatever the radio last reported.
powerState = mLastPowerStateFromRadio;
}
} else {
mMobileActivityFromRadio = true;
}
if (mLastPowerStateFromRadio != powerState) {
mLastPowerStateFromRadio = powerState;
try {
getBatteryStats().noteMobileRadioPowerState(powerState, tsNanos, uid);
} catch (RemoteException e) {
}
}
}
if (ConnectivityManager.isNetworkTypeWifi(type)) {
if (mLastPowerStateFromWifi != powerState) {
mLastPowerStateFromWifi = powerState;
try {
getBatteryStats().noteWifiRadioPowerState(powerState, tsNanos, uid);
} catch (RemoteException e) {
}
}
}
boolean isActive = powerState == DataConnectionRealTimeInfo.DC_POWER_STATE_MEDIUM
|| powerState == DataConnectionRealTimeInfo.DC_POWER_STATE_HIGH;
if (!isMobile || fromRadio || !mMobileActivityFromRadio) {
// Report the change in data activity. We don't do this if this is a change
// on the mobile network, that is not coming from the radio itself, and we
// have previously seen change reports from the radio. In that case only
// the radio is the authority for the current state.
final boolean active = isActive;
invokeForAllObservers(o -> o.interfaceClassDataActivityChanged(
Integer.toString(type), active, tsNanos));
}
boolean report = false;
synchronized (mIdleTimerLock) {
if (mActiveIdleTimers.isEmpty()) {
// If there are no idle timers, we are not monitoring activity, so we
// are always considered active.
isActive = true;
}
if (mNetworkActive != isActive) {
mNetworkActive = isActive;
report = isActive;
}
}
if (report) {
reportNetworkActive();
}
}
@Override
public void registerTetheringStatsProvider(ITetheringStatsProvider provider, String name) {
mContext.enforceCallingOrSelfPermission(NETWORK_STACK, TAG);
Preconditions.checkNotNull(provider);
synchronized(mTetheringStatsProviders) {
mTetheringStatsProviders.put(provider, name);
}
}
@Override
public void unregisterTetheringStatsProvider(ITetheringStatsProvider provider) {
mContext.enforceCallingOrSelfPermission(NETWORK_STACK, TAG);
synchronized(mTetheringStatsProviders) {
mTetheringStatsProviders.remove(provider);
}
}
@Override
public void tetherLimitReached(ITetheringStatsProvider provider) {
mContext.enforceCallingOrSelfPermission(NETWORK_STACK, TAG);
synchronized(mTetheringStatsProviders) {
if (!mTetheringStatsProviders.containsKey(provider)) {
return;
}
// No current code examines the interface parameter in a global alert. Just pass null.
notifyLimitReached(LIMIT_GLOBAL_ALERT, null);
}
}
// Sync the state of the given chain with the native daemon.
private void syncFirewallChainLocked(int chain, String name) {
SparseIntArray rules;
synchronized (mRulesLock) {
final SparseIntArray uidFirewallRules = getUidFirewallRulesLR(chain);
// Make a copy of the current rules, and then clear them. This is because
// setFirewallUidRuleInternal only pushes down rules to the native daemon if they
// are different from the current rules stored in the mUidFirewall*Rules array for
// the specified chain. If we don't clear the rules, setFirewallUidRuleInternal
// will do nothing.
rules = uidFirewallRules.clone();
uidFirewallRules.clear();
}
if (rules.size() > 0) {
// Now push the rules. setFirewallUidRuleInternal will push each of these down to the
// native daemon, and also add them to the mUidFirewall*Rules array for the specified
// chain.
if (DBG) Slog.d(TAG, "Pushing " + rules.size() + " active firewall "
+ name + "UID rules");
for (int i = 0; i < rules.size(); i++) {
setFirewallUidRuleLocked(chain, rules.keyAt(i), rules.valueAt(i));
}
}
}
private void connectNativeNetdService() {
mNetdService = mServices.getNetd();
}
/**
* Prepare native daemon once connected, enabling modules and pushing any
* existing in-memory rules.
*/
private void prepareNativeDaemon() {
mBandwidthControlEnabled = false;
// only enable bandwidth control when support exists
final boolean hasKernelSupport = new File("/proc/net/xt_qtaguid/ctrl").exists();
// push any existing quota or UID rules
synchronized (mQuotaLock) {
if (hasKernelSupport) {
Slog.d(TAG, "enabling bandwidth control");
try {
mConnector.execute("bandwidth", "enable");
mBandwidthControlEnabled = true;
} catch (NativeDaemonConnectorException e) {
Log.wtf(TAG, "problem enabling bandwidth controls", e);
}
} else {
Slog.i(TAG, "not enabling bandwidth control");
}
SystemProperties.set(PROP_QTAGUID_ENABLED, mBandwidthControlEnabled ? "1" : "0");
try {
mConnector.execute("strict", "enable");
mStrictEnabled = true;
} catch (NativeDaemonConnectorException e) {
Log.wtf(TAG, "Failed strict enable", e);
}
setDataSaverModeEnabled(mDataSaverMode);
int size = mActiveQuotas.size();
if (size > 0) {
if (DBG) Slog.d(TAG, "Pushing " + size + " active quota rules");
final HashMap<String, Long> activeQuotas = mActiveQuotas;
mActiveQuotas = Maps.newHashMap();
for (Map.Entry<String, Long> entry : activeQuotas.entrySet()) {
setInterfaceQuota(entry.getKey(), entry.getValue());
}
}
size = mActiveAlerts.size();
if (size > 0) {
if (DBG) Slog.d(TAG, "Pushing " + size + " active alert rules");
final HashMap<String, Long> activeAlerts = mActiveAlerts;
mActiveAlerts = Maps.newHashMap();
for (Map.Entry<String, Long> entry : activeAlerts.entrySet()) {
setInterfaceAlert(entry.getKey(), entry.getValue());
}
}
SparseBooleanArray uidRejectOnQuota = null;
SparseBooleanArray uidAcceptOnQuota = null;
synchronized (mRulesLock) {
size = mUidRejectOnMetered.size();
if (size > 0) {
if (DBG) Slog.d(TAG, "Pushing " + size + " UIDs to metered blacklist rules");
uidRejectOnQuota = mUidRejectOnMetered;
mUidRejectOnMetered = new SparseBooleanArray();
}
size = mUidAllowOnMetered.size();
if (size > 0) {
if (DBG) Slog.d(TAG, "Pushing " + size + " UIDs to metered whitelist rules");
uidAcceptOnQuota = mUidAllowOnMetered;
mUidAllowOnMetered = new SparseBooleanArray();
}
}
if (uidRejectOnQuota != null) {
for (int i = 0; i < uidRejectOnQuota.size(); i++) {
setUidMeteredNetworkBlacklist(uidRejectOnQuota.keyAt(i),
uidRejectOnQuota.valueAt(i));
}
}
if (uidAcceptOnQuota != null) {
for (int i = 0; i < uidAcceptOnQuota.size(); i++) {
setUidMeteredNetworkWhitelist(uidAcceptOnQuota.keyAt(i),
uidAcceptOnQuota.valueAt(i));
}
}
size = mUidCleartextPolicy.size();
if (size > 0) {
if (DBG) Slog.d(TAG, "Pushing " + size + " active UID cleartext policies");
final SparseIntArray local = mUidCleartextPolicy;
mUidCleartextPolicy = new SparseIntArray();
for (int i = 0; i < local.size(); i++) {
setUidCleartextNetworkPolicy(local.keyAt(i), local.valueAt(i));
}
}
setFirewallEnabled(mFirewallEnabled);
syncFirewallChainLocked(FIREWALL_CHAIN_NONE, "");
syncFirewallChainLocked(FIREWALL_CHAIN_STANDBY, "standby ");
syncFirewallChainLocked(FIREWALL_CHAIN_DOZABLE, "dozable ");
syncFirewallChainLocked(FIREWALL_CHAIN_POWERSAVE, "powersave ");
final int[] chains =
{FIREWALL_CHAIN_STANDBY, FIREWALL_CHAIN_DOZABLE, FIREWALL_CHAIN_POWERSAVE};
for (int chain : chains) {
if (getFirewallChainState(chain)) {
setFirewallChainEnabled(chain, true);
}
}
}
if (mBandwidthControlEnabled) {
try {
getBatteryStats().noteNetworkStatsEnabled();
} catch (RemoteException e) {
}
}
}
/**
* Notify our observers of a new or updated interface address.
*/
private void notifyAddressUpdated(String iface, LinkAddress address) {
invokeForAllObservers(o -> o.addressUpdated(iface, address));
}
/**
* Notify our observers of a deleted interface address.
*/
private void notifyAddressRemoved(String iface, LinkAddress address) {
invokeForAllObservers(o -> o.addressRemoved(iface, address));
}
/**
* Notify our observers of DNS server information received.
*/
private void notifyInterfaceDnsServerInfo(String iface, long lifetime, String[] addresses) {
invokeForAllObservers(o -> o.interfaceDnsServerInfo(iface, lifetime, addresses));
}
/**
* Notify our observers of a route change.
*/
private void notifyRouteChange(String action, RouteInfo route) {
if (action.equals("updated")) {
invokeForAllObservers(o -> o.routeUpdated(route));
} else {
invokeForAllObservers(o -> o.routeRemoved(route));
}
}
//
// Netd Callback handling
//
private class NetdCallbackReceiver implements INativeDaemonConnectorCallbacks {
@Override
public void onDaemonConnected() {
Slog.i(TAG, "onDaemonConnected()");
// event is dispatched from internal NDC thread, so we prepare the
// daemon back on main thread.
if (mConnectedSignal != null) {
// The system is booting and we're connecting to netd for the first time.
mConnectedSignal.countDown();
mConnectedSignal = null;
} else {
// We're reconnecting to netd after the socket connection
// was interrupted (e.g., if it crashed).
mFgHandler.post(new Runnable() {
@Override
public void run() {
connectNativeNetdService();
prepareNativeDaemon();
}
});
}
}
@Override
public boolean onCheckHoldWakeLock(int code) {
return code == NetdResponseCode.InterfaceClassActivity;
}
@Override
public boolean onEvent(int code, String raw, String[] cooked) {
String errorMessage = String.format("Invalid event from daemon (%s)", raw);
switch (code) {
case NetdResponseCode.InterfaceChange:
/*
* a network interface change occured
* Format: "NNN Iface added <name>"
* "NNN Iface removed <name>"
* "NNN Iface changed <name> <up/down>"
* "NNN Iface linkstatus <name> <up/down>"
*/
if (cooked.length < 4 || !cooked[1].equals("Iface")) {
throw new IllegalStateException(errorMessage);
}
if (cooked[2].equals("added")) {
notifyInterfaceAdded(cooked[3]);
return true;
} else if (cooked[2].equals("removed")) {
notifyInterfaceRemoved(cooked[3]);
return true;
} else if (cooked[2].equals("changed") && cooked.length == 5) {
notifyInterfaceStatusChanged(cooked[3], cooked[4].equals("up"));
return true;
} else if (cooked[2].equals("linkstate") && cooked.length == 5) {
notifyInterfaceLinkStateChanged(cooked[3], cooked[4].equals("up"));
return true;
}
throw new IllegalStateException(errorMessage);
// break;
case NetdResponseCode.BandwidthControl:
/*
* Bandwidth control needs some attention
* Format: "NNN limit alert <alertName> <ifaceName>"
*/
if (cooked.length < 5 || !cooked[1].equals("limit")) {
throw new IllegalStateException(errorMessage);
}
if (cooked[2].equals("alert")) {
notifyLimitReached(cooked[3], cooked[4]);
return true;
}
throw new IllegalStateException(errorMessage);
// break;
case NetdResponseCode.InterfaceClassActivity:
/*
* An network interface class state changed (active/idle)
* Format: "NNN IfaceClass <active/idle> <label>"
*/
if (cooked.length < 4 || !cooked[1].equals("IfaceClass")) {
throw new IllegalStateException(errorMessage);
}
long timestampNanos = 0;
int processUid = -1;
if (cooked.length >= 5) {
try {
timestampNanos = Long.parseLong(cooked[4]);
if (cooked.length == 6) {
processUid = Integer.parseInt(cooked[5]);
}
} catch(NumberFormatException ne) {}
} else {
timestampNanos = SystemClock.elapsedRealtimeNanos();
}
boolean isActive = cooked[2].equals("active");
notifyInterfaceClassActivity(Integer.parseInt(cooked[3]),
isActive ? DataConnectionRealTimeInfo.DC_POWER_STATE_HIGH
: DataConnectionRealTimeInfo.DC_POWER_STATE_LOW,
timestampNanos, processUid, false);
return true;
// break;
case NetdResponseCode.InterfaceAddressChange:
/*
* A network address change occurred
* Format: "NNN Address updated <addr> <iface> <flags> <scope>"
* "NNN Address removed <addr> <iface> <flags> <scope>"
*/
if (cooked.length < 7 || !cooked[1].equals("Address")) {
throw new IllegalStateException(errorMessage);
}
String iface = cooked[4];
LinkAddress address;
try {
int flags = Integer.parseInt(cooked[5]);
int scope = Integer.parseInt(cooked[6]);
address = new LinkAddress(cooked[3], flags, scope);
} catch(NumberFormatException e) { // Non-numeric lifetime or scope.
throw new IllegalStateException(errorMessage, e);
} catch(IllegalArgumentException e) { // Malformed/invalid IP address.
throw new IllegalStateException(errorMessage, e);
}
if (cooked[2].equals("updated")) {
notifyAddressUpdated(iface, address);
} else {
notifyAddressRemoved(iface, address);
}
return true;
// break;
case NetdResponseCode.InterfaceDnsServerInfo:
/*
* Information about available DNS servers has been received.
* Format: "NNN DnsInfo servers <interface> <lifetime> <servers>"
*/
long lifetime; // Actually a 32-bit unsigned integer.
if (cooked.length == 6 &&
cooked[1].equals("DnsInfo") &&
cooked[2].equals("servers")) {
try {
lifetime = Long.parseLong(cooked[4]);
} catch (NumberFormatException e) {
throw new IllegalStateException(errorMessage);
}
String[] servers = cooked[5].split(",");
notifyInterfaceDnsServerInfo(cooked[3], lifetime, servers);
}
return true;
// break;
case NetdResponseCode.RouteChange:
/*
* A route has been updated or removed.
* Format: "NNN Route <updated|removed> <dst> [via <gateway] [dev <iface>]"
*/
if (!cooked[1].equals("Route") || cooked.length < 6) {
throw new IllegalStateException(errorMessage);
}
String via = null;
String dev = null;
boolean valid = true;
for (int i = 4; (i + 1) < cooked.length && valid; i += 2) {
if (cooked[i].equals("dev")) {
if (dev == null) {
dev = cooked[i+1];
} else {
valid = false; // Duplicate interface.
}
} else if (cooked[i].equals("via")) {
if (via == null) {
via = cooked[i+1];
} else {
valid = false; // Duplicate gateway.
}
} else {
valid = false; // Unknown syntax.
}
}
if (valid) {
try {
// InetAddress.parseNumericAddress(null) inexplicably returns ::1.
InetAddress gateway = null;
if (via != null) gateway = InetAddress.parseNumericAddress(via);
RouteInfo route = new RouteInfo(new IpPrefix(cooked[3]), gateway, dev);
notifyRouteChange(cooked[2], route);
return true;
} catch (IllegalArgumentException e) {}
}
throw new IllegalStateException(errorMessage);
// break;
case NetdResponseCode.StrictCleartext:
final int uid = Integer.parseInt(cooked[1]);
final byte[] firstPacket = HexDump.hexStringToByteArray(cooked[2]);
try {
ActivityManager.getService().notifyCleartextNetwork(uid, firstPacket);
} catch (RemoteException ignored) {
}
break;
default: break;
}
return false;
}
}
//
// INetworkManagementService members
//
@Override
public INetd getNetdService() throws RemoteException {
final CountDownLatch connectedSignal = mConnectedSignal;
if (connectedSignal != null) {
try {
connectedSignal.await();
} catch (InterruptedException ignored) {}
}
return mNetdService;
}
@Override
public String[] listInterfaces() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
return NativeDaemonEvent.filterMessageList(
mConnector.executeForList("interface", "list"), InterfaceListResult);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public InterfaceConfiguration getInterfaceConfig(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final NativeDaemonEvent event;
try {
event = mConnector.execute("interface", "getcfg", iface);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
event.checkCode(InterfaceGetCfgResult);
// Rsp: 213 xx:xx:xx:xx:xx:xx yyy.yyy.yyy.yyy zzz flag1 flag2 flag3
final StringTokenizer st = new StringTokenizer(event.getMessage());
InterfaceConfiguration cfg;
try {
cfg = new InterfaceConfiguration();
cfg.setHardwareAddress(st.nextToken(" "));
InetAddress addr = null;
int prefixLength = 0;
try {
addr = NetworkUtils.numericToInetAddress(st.nextToken());
} catch (IllegalArgumentException iae) {
Slog.e(TAG, "Failed to parse ipaddr", iae);
}
try {
prefixLength = Integer.parseInt(st.nextToken());
} catch (NumberFormatException nfe) {
Slog.e(TAG, "Failed to parse prefixLength", nfe);
}
cfg.setLinkAddress(new LinkAddress(addr, prefixLength));
while (st.hasMoreTokens()) {
cfg.setFlag(st.nextToken());
}
} catch (NoSuchElementException nsee) {
throw new IllegalStateException("Invalid response from daemon: " + event);
}
return cfg;
}
@Override
public void setInterfaceConfig(String iface, InterfaceConfiguration cfg) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
LinkAddress linkAddr = cfg.getLinkAddress();
if (linkAddr == null || linkAddr.getAddress() == null) {
throw new IllegalStateException("Null LinkAddress given");
}
final Command cmd = new Command("interface", "setcfg", iface,
linkAddr.getAddress().getHostAddress(),
linkAddr.getPrefixLength());
for (String flag : cfg.getFlags()) {
cmd.appendArg(flag);
}
try {
mConnector.execute(cmd);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void setInterfaceDown(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final InterfaceConfiguration ifcg = getInterfaceConfig(iface);
ifcg.setInterfaceDown();
setInterfaceConfig(iface, ifcg);
}
@Override
public void setInterfaceUp(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final InterfaceConfiguration ifcg = getInterfaceConfig(iface);
ifcg.setInterfaceUp();
setInterfaceConfig(iface, ifcg);
}
@Override
public void setInterfaceIpv6PrivacyExtensions(String iface, boolean enable) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute(
"interface", "ipv6privacyextensions", iface, enable ? "enable" : "disable");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
/* TODO: This is right now a IPv4 only function. Works for wifi which loses its
IPv6 addresses on interface down, but we need to do full clean up here */
@Override
public void clearInterfaceAddresses(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("interface", "clearaddrs", iface);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void enableIpv6(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("interface", "ipv6", iface, "enable");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void setIPv6AddrGenMode(String iface, int mode) throws ServiceSpecificException {
try {
mNetdService.setIPv6AddrGenMode(iface, mode);
} catch (RemoteException e) {
throw e.rethrowAsRuntimeException();
}
}
@Override
public void disableIpv6(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("interface", "ipv6", iface, "disable");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void addRoute(int netId, RouteInfo route) {
modifyRoute("add", "" + netId, route);
}
@Override
public void removeRoute(int netId, RouteInfo route) {
modifyRoute("remove", "" + netId, route);
}
private void modifyRoute(String action, String netId, RouteInfo route) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final Command cmd = new Command("network", "route", action, netId);
// create triplet: interface dest-ip-addr/prefixlength gateway-ip-addr
cmd.appendArg(route.getInterface());
cmd.appendArg(route.getDestination().toString());
switch (route.getType()) {
case RouteInfo.RTN_UNICAST:
if (route.hasGateway()) {
cmd.appendArg(route.getGateway().getHostAddress());
}
break;
case RouteInfo.RTN_UNREACHABLE:
cmd.appendArg("unreachable");
break;
case RouteInfo.RTN_THROW:
cmd.appendArg("throw");
break;
}
try {
mConnector.execute(cmd);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
private ArrayList<String> readRouteList(String filename) {
FileInputStream fstream = null;
ArrayList<String> list = new ArrayList<>();
try {
fstream = new FileInputStream(filename);
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String s;
// throw away the title line
while (((s = br.readLine()) != null) && (s.length() != 0)) {
list.add(s);
}
} catch (IOException ex) {
// return current list, possibly empty
} finally {
if (fstream != null) {
try {
fstream.close();
} catch (IOException ex) {}
}
}
return list;
}
@Override
public void setMtu(String iface, int mtu) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final NativeDaemonEvent event;
try {
event = mConnector.execute("interface", "setmtu", iface, mtu);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void shutdown() {
// TODO: remove from aidl if nobody calls externally
mContext.enforceCallingOrSelfPermission(SHUTDOWN, TAG);
Slog.i(TAG, "Shutting down");
}
@Override
public boolean getIpForwardingEnabled() throws IllegalStateException{
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final NativeDaemonEvent event;
try {
event = mConnector.execute("ipfwd", "status");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
// 211 Forwarding enabled
event.checkCode(IpFwdStatusResult);
return event.getMessage().endsWith("enabled");
}
@Override
public void setIpForwardingEnabled(boolean enable) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("ipfwd", enable ? "enable" : "disable", "tethering");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void startTethering(String[] dhcpRange) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
// cmd is "tether start first_start first_stop second_start second_stop ..."
// an odd number of addrs will fail
final Command cmd = new Command("tether", "start");
for (String d : dhcpRange) {
cmd.appendArg(d);
}
try {
mConnector.execute(cmd);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void stopTethering() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("tether", "stop");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public boolean isTetheringStarted() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final NativeDaemonEvent event;
try {
event = mConnector.execute("tether", "status");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
// 210 Tethering services started
event.checkCode(TetherStatusResult);
return event.getMessage().endsWith("started");
}
@Override
public void tetherInterface(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("tether", "interface", "add", iface);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
List<RouteInfo> routes = new ArrayList<>();
// The RouteInfo constructor truncates the LinkAddress to a network prefix, thus making it
// suitable to use as a route destination.
routes.add(new RouteInfo(getInterfaceConfig(iface).getLinkAddress(), null, iface));
addInterfaceToLocalNetwork(iface, routes);
}
@Override
public void untetherInterface(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("tether", "interface", "remove", iface);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
} finally {
removeInterfaceFromLocalNetwork(iface);
}
}
@Override
public String[] listTetheredInterfaces() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
return NativeDaemonEvent.filterMessageList(
mConnector.executeForList("tether", "interface", "list"),
TetherInterfaceListResult);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void setDnsForwarders(Network network, String[] dns) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
int netId = (network != null) ? network.netId : ConnectivityManager.NETID_UNSET;
final Command cmd = new Command("tether", "dns", "set", netId);
for (String s : dns) {
cmd.appendArg(NetworkUtils.numericToInetAddress(s).getHostAddress());
}
try {
mConnector.execute(cmd);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public String[] getDnsForwarders() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
return NativeDaemonEvent.filterMessageList(
mConnector.executeForList("tether", "dns", "list"), TetherDnsFwdTgtListResult);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
private List<InterfaceAddress> excludeLinkLocal(List<InterfaceAddress> addresses) {
ArrayList<InterfaceAddress> filtered = new ArrayList<>(addresses.size());
for (InterfaceAddress ia : addresses) {
if (!ia.getAddress().isLinkLocalAddress())
filtered.add(ia);
}
return filtered;
}
private void modifyInterfaceForward(boolean add, String fromIface, String toIface) {
final Command cmd = new Command("ipfwd", add ? "add" : "remove", fromIface, toIface);
try {
mConnector.execute(cmd);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void startInterfaceForwarding(String fromIface, String toIface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
modifyInterfaceForward(true, fromIface, toIface);
}
@Override
public void stopInterfaceForwarding(String fromIface, String toIface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
modifyInterfaceForward(false, fromIface, toIface);
}
private void modifyNat(String action, String internalInterface, String externalInterface)
throws SocketException {
final Command cmd = new Command("nat", action, internalInterface, externalInterface);
final NetworkInterface internalNetworkInterface = NetworkInterface.getByName(
internalInterface);
if (internalNetworkInterface == null) {
cmd.appendArg("0");
} else {
// Don't touch link-local routes, as link-local addresses aren't routable,
// kernel creates link-local routes on all interfaces automatically
List<InterfaceAddress> interfaceAddresses = excludeLinkLocal(
internalNetworkInterface.getInterfaceAddresses());
cmd.appendArg(interfaceAddresses.size());
for (InterfaceAddress ia : interfaceAddresses) {
InetAddress addr = NetworkUtils.getNetworkPart(
ia.getAddress(), ia.getNetworkPrefixLength());
cmd.appendArg(addr.getHostAddress() + "/" + ia.getNetworkPrefixLength());
}
}
try {
mConnector.execute(cmd);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void enableNat(String internalInterface, String externalInterface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
modifyNat("enable", internalInterface, externalInterface);
} catch (SocketException e) {
throw new IllegalStateException(e);
}
}
@Override
public void disableNat(String internalInterface, String externalInterface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
modifyNat("disable", internalInterface, externalInterface);
} catch (SocketException e) {
throw new IllegalStateException(e);
}
}
@Override
public String[] listTtys() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
return NativeDaemonEvent.filterMessageList(
mConnector.executeForList("list_ttys"), TtyListResult);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void attachPppd(
String tty, String localAddr, String remoteAddr, String dns1Addr, String dns2Addr) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("pppd", "attach", tty,
NetworkUtils.numericToInetAddress(localAddr).getHostAddress(),
NetworkUtils.numericToInetAddress(remoteAddr).getHostAddress(),
NetworkUtils.numericToInetAddress(dns1Addr).getHostAddress(),
NetworkUtils.numericToInetAddress(dns2Addr).getHostAddress());
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void detachPppd(String tty) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("pppd", "detach", tty);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void addIdleTimer(String iface, int timeout, final int type) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
if (DBG) Slog.d(TAG, "Adding idletimer");
synchronized (mIdleTimerLock) {
IdleTimerParams params = mActiveIdleTimers.get(iface);
if (params != null) {
// the interface already has idletimer, update network count
params.networkCount++;
return;
}
try {
mConnector.execute("idletimer", "add", iface, Integer.toString(timeout),
Integer.toString(type));
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
mActiveIdleTimers.put(iface, new IdleTimerParams(timeout, type));
// Networks start up.
if (ConnectivityManager.isNetworkTypeMobile(type)) {
mNetworkActive = false;
}
mDaemonHandler.post(new Runnable() {
@Override public void run() {
notifyInterfaceClassActivity(type,
DataConnectionRealTimeInfo.DC_POWER_STATE_HIGH,
SystemClock.elapsedRealtimeNanos(), -1, false);
}
});
}
}
@Override
public void removeIdleTimer(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
if (DBG) Slog.d(TAG, "Removing idletimer");
synchronized (mIdleTimerLock) {
final IdleTimerParams params = mActiveIdleTimers.get(iface);
if (params == null || --(params.networkCount) > 0) {
return;
}
try {
mConnector.execute("idletimer", "remove", iface,
Integer.toString(params.timeout), Integer.toString(params.type));
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
mActiveIdleTimers.remove(iface);
mDaemonHandler.post(new Runnable() {
@Override public void run() {
notifyInterfaceClassActivity(params.type,
DataConnectionRealTimeInfo.DC_POWER_STATE_LOW,
SystemClock.elapsedRealtimeNanos(), -1, false);
}
});
}
}
@Override
public NetworkStats getNetworkStatsSummaryDev() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
return mStatsFactory.readNetworkStatsSummaryDev();
} catch (IOException e) {
throw new IllegalStateException(e);
}
}
@Override
public NetworkStats getNetworkStatsSummaryXt() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
return mStatsFactory.readNetworkStatsSummaryXt();
} catch (IOException e) {
throw new IllegalStateException(e);
}
}
@Override
public NetworkStats getNetworkStatsDetail() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
return mStatsFactory.readNetworkStatsDetail(UID_ALL, null, TAG_ALL, null);
} catch (IOException e) {
throw new IllegalStateException(e);
}
}
@Override
public void setInterfaceQuota(String iface, long quotaBytes) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
// silently discard when control disabled
// TODO: eventually migrate to be always enabled
if (!mBandwidthControlEnabled) return;
synchronized (mQuotaLock) {
if (mActiveQuotas.containsKey(iface)) {
throw new IllegalStateException("iface " + iface + " already has quota");
}
try {
// TODO: support quota shared across interfaces
mConnector.execute("bandwidth", "setiquota", iface, quotaBytes);
mActiveQuotas.put(iface, quotaBytes);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
synchronized (mTetheringStatsProviders) {
for (ITetheringStatsProvider provider : mTetheringStatsProviders.keySet()) {
try {
provider.setInterfaceQuota(iface, quotaBytes);
} catch (RemoteException e) {
Log.e(TAG, "Problem setting tethering data limit on provider " +
mTetheringStatsProviders.get(provider) + ": " + e);
}
}
}
}
}
@Override
public void removeInterfaceQuota(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
// silently discard when control disabled
// TODO: eventually migrate to be always enabled
if (!mBandwidthControlEnabled) return;
synchronized (mQuotaLock) {
if (!mActiveQuotas.containsKey(iface)) {
// TODO: eventually consider throwing
return;
}
mActiveQuotas.remove(iface);
mActiveAlerts.remove(iface);
try {
// TODO: support quota shared across interfaces
mConnector.execute("bandwidth", "removeiquota", iface);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
synchronized (mTetheringStatsProviders) {
for (ITetheringStatsProvider provider : mTetheringStatsProviders.keySet()) {
try {
provider.setInterfaceQuota(iface, ITetheringStatsProvider.QUOTA_UNLIMITED);
} catch (RemoteException e) {
Log.e(TAG, "Problem removing tethering data limit on provider " +
mTetheringStatsProviders.get(provider) + ": " + e);
}
}
}
}
}
@Override
public void setInterfaceAlert(String iface, long alertBytes) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
// silently discard when control disabled
// TODO: eventually migrate to be always enabled
if (!mBandwidthControlEnabled) return;
// quick sanity check
if (!mActiveQuotas.containsKey(iface)) {
throw new IllegalStateException("setting alert requires existing quota on iface");
}
synchronized (mQuotaLock) {
if (mActiveAlerts.containsKey(iface)) {
throw new IllegalStateException("iface " + iface + " already has alert");
}
try {
// TODO: support alert shared across interfaces
mConnector.execute("bandwidth", "setinterfacealert", iface, alertBytes);
mActiveAlerts.put(iface, alertBytes);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
}
@Override
public void removeInterfaceAlert(String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
// silently discard when control disabled
// TODO: eventually migrate to be always enabled
if (!mBandwidthControlEnabled) return;
synchronized (mQuotaLock) {
if (!mActiveAlerts.containsKey(iface)) {
// TODO: eventually consider throwing
return;
}
try {
// TODO: support alert shared across interfaces
mConnector.execute("bandwidth", "removeinterfacealert", iface);
mActiveAlerts.remove(iface);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
}
@Override
public void setGlobalAlert(long alertBytes) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
// silently discard when control disabled
// TODO: eventually migrate to be always enabled
if (!mBandwidthControlEnabled) return;
try {
mConnector.execute("bandwidth", "setglobalalert", alertBytes);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
private void setUidOnMeteredNetworkList(int uid, boolean blacklist, boolean enable) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
// silently discard when control disabled
// TODO: eventually migrate to be always enabled
if (!mBandwidthControlEnabled) return;
final String chain = blacklist ? "naughtyapps" : "niceapps";
final String suffix = enable ? "add" : "remove";
synchronized (mQuotaLock) {
boolean oldEnable;
SparseBooleanArray quotaList;
synchronized (mRulesLock) {
quotaList = blacklist ? mUidRejectOnMetered : mUidAllowOnMetered;
oldEnable = quotaList.get(uid, false);
}
if (oldEnable == enable) {
// TODO: eventually consider throwing
return;
}
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "inetd bandwidth");
try {
mConnector.execute("bandwidth", suffix + chain, uid);
synchronized (mRulesLock) {
if (enable) {
quotaList.put(uid, true);
} else {
quotaList.delete(uid);
}
}
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
}
@Override
public void setUidMeteredNetworkBlacklist(int uid, boolean enable) {
setUidOnMeteredNetworkList(uid, true, enable);
}
@Override
public void setUidMeteredNetworkWhitelist(int uid, boolean enable) {
setUidOnMeteredNetworkList(uid, false, enable);
}
@Override
public boolean setDataSaverModeEnabled(boolean enable) {
mContext.enforceCallingOrSelfPermission(NETWORK_SETTINGS, TAG);
if (DBG) Log.d(TAG, "setDataSaverMode: " + enable);
synchronized (mQuotaLock) {
if (mDataSaverMode == enable) {
Log.w(TAG, "setDataSaverMode(): already " + mDataSaverMode);
return true;
}
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "bandwidthEnableDataSaver");
try {
final boolean changed = mNetdService.bandwidthEnableDataSaver(enable);
if (changed) {
mDataSaverMode = enable;
} else {
Log.w(TAG, "setDataSaverMode(" + enable + "): netd command silently failed");
}
return changed;
} catch (RemoteException e) {
Log.w(TAG, "setDataSaverMode(" + enable + "): netd command failed", e);
return false;
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
}
@Override
public void setAllowOnlyVpnForUids(boolean add, UidRange[] uidRanges)
throws ServiceSpecificException {
mContext.enforceCallingOrSelfPermission(NETWORK_STACK, TAG);
try {
mNetdService.networkRejectNonSecureVpn(add, uidRanges);
} catch (ServiceSpecificException e) {
Log.w(TAG, "setAllowOnlyVpnForUids(" + add + ", " + Arrays.toString(uidRanges) + ")"
+ ": netd command failed", e);
throw e;
} catch (RemoteException e) {
Log.w(TAG, "setAllowOnlyVpnForUids(" + add + ", " + Arrays.toString(uidRanges) + ")"
+ ": netd command failed", e);
throw e.rethrowAsRuntimeException();
}
}
private void applyUidCleartextNetworkPolicy(int uid, int policy) {
final String policyString;
switch (policy) {
case StrictMode.NETWORK_POLICY_ACCEPT:
policyString = "accept";
break;
case StrictMode.NETWORK_POLICY_LOG:
policyString = "log";
break;
case StrictMode.NETWORK_POLICY_REJECT:
policyString = "reject";
break;
default:
throw new IllegalArgumentException("Unknown policy " + policy);
}
try {
mConnector.execute("strict", "set_uid_cleartext_policy", uid, policyString);
mUidCleartextPolicy.put(uid, policy);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void setUidCleartextNetworkPolicy(int uid, int policy) {
if (Binder.getCallingUid() != uid) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
}
synchronized (mQuotaLock) {
final int oldPolicy = mUidCleartextPolicy.get(uid, StrictMode.NETWORK_POLICY_ACCEPT);
if (oldPolicy == policy) {
// This also ensures we won't needlessly apply an ACCEPT policy if we've just
// enabled strict and the underlying iptables rules are empty.
return;
}
if (!mStrictEnabled) {
// Module isn't enabled yet; stash the requested policy away to
// apply later once the daemon is connected.
mUidCleartextPolicy.put(uid, policy);
return;
}
// netd does not keep state on strict mode policies, and cannot replace a non-accept
// policy without deleting it first. Rather than add state to netd, just always send
// it an accept policy when switching between two non-accept policies.
// TODO: consider keeping state in netd so we can simplify this code.
if (oldPolicy != StrictMode.NETWORK_POLICY_ACCEPT &&
policy != StrictMode.NETWORK_POLICY_ACCEPT) {
applyUidCleartextNetworkPolicy(uid, StrictMode.NETWORK_POLICY_ACCEPT);
}
applyUidCleartextNetworkPolicy(uid, policy);
}
}
@Override
public boolean isBandwidthControlEnabled() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
return mBandwidthControlEnabled;
}
@Override
public NetworkStats getNetworkStatsUidDetail(int uid, String[] ifaces) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
return mStatsFactory.readNetworkStatsDetail(uid, ifaces, TAG_ALL, null);
} catch (IOException e) {
throw new IllegalStateException(e);
}
}
private class NetdTetheringStatsProvider extends ITetheringStatsProvider.Stub {
@Override
public NetworkStats getTetherStats(int how) {
// We only need to return per-UID stats. Per-device stats are already counted by
// interface counters.
if (how != STATS_PER_UID) {
return new NetworkStats(SystemClock.elapsedRealtime(), 0);
}
final PersistableBundle bundle;
try {
bundle = mNetdService.tetherGetStats();
} catch (RemoteException | ServiceSpecificException e) {
throw new IllegalStateException("problem parsing tethering stats: ", e);
}
final NetworkStats stats = new NetworkStats(SystemClock.elapsedRealtime(),
bundle.size());
final NetworkStats.Entry entry = new NetworkStats.Entry();
for (String iface : bundle.keySet()) {
long[] statsArray = bundle.getLongArray(iface);
try {
entry.iface = iface;
entry.uid = UID_TETHERING;
entry.set = SET_DEFAULT;
entry.tag = TAG_NONE;
entry.rxBytes = statsArray[INetd.TETHER_STATS_RX_BYTES];
entry.rxPackets = statsArray[INetd.TETHER_STATS_RX_PACKETS];
entry.txBytes = statsArray[INetd.TETHER_STATS_TX_BYTES];
entry.txPackets = statsArray[INetd.TETHER_STATS_TX_PACKETS];
stats.combineValues(entry);
} catch (ArrayIndexOutOfBoundsException e) {
throw new IllegalStateException("invalid tethering stats for " + iface, e);
}
}
return stats;
}
@Override
public void setInterfaceQuota(String iface, long quotaBytes) {
// Do nothing. netd is already informed of quota changes in setInterfaceQuota.
}
}
@Override
public NetworkStats getNetworkStatsTethering(int how) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final NetworkStats stats = new NetworkStats(SystemClock.elapsedRealtime(), 1);
synchronized (mTetheringStatsProviders) {
for (ITetheringStatsProvider provider: mTetheringStatsProviders.keySet()) {
try {
stats.combineAllValues(provider.getTetherStats(how));
} catch (RemoteException e) {
Log.e(TAG, "Problem reading tethering stats from " +
mTetheringStatsProviders.get(provider) + ": " + e);
}
}
}
return stats;
}
@Override
public void setDnsConfigurationForNetwork(int netId, String[] servers, String[] domains,
int[] params, String tlsHostname, String[] tlsServers) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final String[] tlsFingerprints = new String[0];
try {
mNetdService.setResolverConfiguration(
netId, servers, domains, params, tlsHostname, tlsServers, tlsFingerprints);
} catch (RemoteException e) {
throw new RuntimeException(e);
}
}
@Override
public void addVpnUidRanges(int netId, UidRange[] ranges) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
Object[] argv = new Object[3 + MAX_UID_RANGES_PER_COMMAND];
argv[0] = "users";
argv[1] = "add";
argv[2] = netId;
int argc = 3;
// Avoid overly long commands by limiting number of UID ranges per command.
for (int i = 0; i < ranges.length; i++) {
argv[argc++] = ranges[i].toString();
if (i == (ranges.length - 1) || argc == argv.length) {
try {
mConnector.execute("network", Arrays.copyOf(argv, argc));
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
argc = 3;
}
}
}
@Override
public void removeVpnUidRanges(int netId, UidRange[] ranges) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
Object[] argv = new Object[3 + MAX_UID_RANGES_PER_COMMAND];
argv[0] = "users";
argv[1] = "remove";
argv[2] = netId;
int argc = 3;
// Avoid overly long commands by limiting number of UID ranges per command.
for (int i = 0; i < ranges.length; i++) {
argv[argc++] = ranges[i].toString();
if (i == (ranges.length - 1) || argc == argv.length) {
try {
mConnector.execute("network", Arrays.copyOf(argv, argc));
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
argc = 3;
}
}
}
@Override
public void setFirewallEnabled(boolean enabled) {
enforceSystemUid();
try {
mConnector.execute("firewall", "enable", enabled ? "whitelist" : "blacklist");
mFirewallEnabled = enabled;
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public boolean isFirewallEnabled() {
enforceSystemUid();
return mFirewallEnabled;
}
@Override
public void setFirewallInterfaceRule(String iface, boolean allow) {
enforceSystemUid();
Preconditions.checkState(mFirewallEnabled);
final String rule = allow ? "allow" : "deny";
try {
mConnector.execute("firewall", "set_interface_rule", iface, rule);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
private void closeSocketsForFirewallChainLocked(int chain, String chainName) {
// UID ranges to close sockets on.
UidRange[] ranges;
// UID ranges whose sockets we won't touch.
int[] exemptUids;
int numUids = 0;
if (getFirewallType(chain) == FIREWALL_TYPE_WHITELIST) {
// Close all sockets on all non-system UIDs...
ranges = new UidRange[] {
// TODO: is there a better way of finding all existing users? If so, we could
// specify their ranges here.
new UidRange(Process.FIRST_APPLICATION_UID, Integer.MAX_VALUE),
};
// ... except for the UIDs that have allow rules.
synchronized (mRulesLock) {
final SparseIntArray rules = getUidFirewallRulesLR(chain);
exemptUids = new int[rules.size()];
for (int i = 0; i < exemptUids.length; i++) {
if (rules.valueAt(i) == NetworkPolicyManager.FIREWALL_RULE_ALLOW) {
exemptUids[numUids] = rules.keyAt(i);
numUids++;
}
}
}
// Normally, whitelist chains only contain deny rules, so numUids == exemptUids.length.
// But the code does not guarantee this in any way, and at least in one case - if we add
// a UID rule to the firewall, and then disable the firewall - the chains can contain
// the wrong type of rule. In this case, don't close connections that we shouldn't.
//
// TODO: tighten up this code by ensuring we never set the wrong type of rule, and
// fix setFirewallEnabled to grab mQuotaLock and clear rules.
if (numUids != exemptUids.length) {
exemptUids = Arrays.copyOf(exemptUids, numUids);
}
} else {
// Close sockets for every UID that has a deny rule...
synchronized (mRulesLock) {
final SparseIntArray rules = getUidFirewallRulesLR(chain);
ranges = new UidRange[rules.size()];
for (int i = 0; i < ranges.length; i++) {
if (rules.valueAt(i) == NetworkPolicyManager.FIREWALL_RULE_DENY) {
int uid = rules.keyAt(i);
ranges[numUids] = new UidRange(uid, uid);
numUids++;
}
}
}
// As above; usually numUids == ranges.length, but not always.
if (numUids != ranges.length) {
ranges = Arrays.copyOf(ranges, numUids);
}
// ... with no exceptions.
exemptUids = new int[0];
}
try {
mNetdService.socketDestroy(ranges, exemptUids);
} catch(RemoteException | ServiceSpecificException e) {
Slog.e(TAG, "Error closing sockets after enabling chain " + chainName + ": " + e);
}
}
@Override
public void setFirewallChainEnabled(int chain, boolean enable) {
enforceSystemUid();
synchronized (mQuotaLock) {
synchronized (mRulesLock) {
if (getFirewallChainState(chain) == enable) {
// All is the same, nothing to do. This relies on the fact that netd has child
// chains default detached.
return;
}
setFirewallChainState(chain, enable);
}
final String operation = enable ? "enable_chain" : "disable_chain";
final String chainName;
switch(chain) {
case FIREWALL_CHAIN_STANDBY:
chainName = FIREWALL_CHAIN_NAME_STANDBY;
break;
case FIREWALL_CHAIN_DOZABLE:
chainName = FIREWALL_CHAIN_NAME_DOZABLE;
break;
case FIREWALL_CHAIN_POWERSAVE:
chainName = FIREWALL_CHAIN_NAME_POWERSAVE;
break;
default:
throw new IllegalArgumentException("Bad child chain: " + chain);
}
try {
mConnector.execute("firewall", operation, chainName);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
// Close any sockets that were opened by the affected UIDs. This has to be done after
// disabling network connectivity, in case they react to the socket close by reopening
// the connection and race with the iptables commands that enable the firewall. All
// whitelist and blacklist chains allow RSTs through.
if (enable) {
if (DBG) Slog.d(TAG, "Closing sockets after enabling chain " + chainName);
closeSocketsForFirewallChainLocked(chain, chainName);
}
}
}
private int getFirewallType(int chain) {
switch (chain) {
case FIREWALL_CHAIN_STANDBY:
return FIREWALL_TYPE_BLACKLIST;
case FIREWALL_CHAIN_DOZABLE:
return FIREWALL_TYPE_WHITELIST;
case FIREWALL_CHAIN_POWERSAVE:
return FIREWALL_TYPE_WHITELIST;
default:
return isFirewallEnabled() ? FIREWALL_TYPE_WHITELIST : FIREWALL_TYPE_BLACKLIST;
}
}
@Override
public void setFirewallUidRules(int chain, int[] uids, int[] rules) {
enforceSystemUid();
synchronized (mQuotaLock) {
synchronized (mRulesLock) {
SparseIntArray uidFirewallRules = getUidFirewallRulesLR(chain);
SparseIntArray newRules = new SparseIntArray();
// apply new set of rules
for (int index = uids.length - 1; index >= 0; --index) {
int uid = uids[index];
int rule = rules[index];
updateFirewallUidRuleLocked(chain, uid, rule);
newRules.put(uid, rule);
}
// collect the rules to remove.
SparseIntArray rulesToRemove = new SparseIntArray();
for (int index = uidFirewallRules.size() - 1; index >= 0; --index) {
int uid = uidFirewallRules.keyAt(index);
if (newRules.indexOfKey(uid) < 0) {
rulesToRemove.put(uid, FIREWALL_RULE_DEFAULT);
}
}
// remove dead rules
for (int index = rulesToRemove.size() - 1; index >= 0; --index) {
int uid = rulesToRemove.keyAt(index);
updateFirewallUidRuleLocked(chain, uid, FIREWALL_RULE_DEFAULT);
}
}
try {
switch (chain) {
case FIREWALL_CHAIN_DOZABLE:
mNetdService.firewallReplaceUidChain("fw_dozable", true, uids);
break;
case FIREWALL_CHAIN_STANDBY:
mNetdService.firewallReplaceUidChain("fw_standby", false, uids);
break;
case FIREWALL_CHAIN_POWERSAVE:
mNetdService.firewallReplaceUidChain("fw_powersave", true, uids);
break;
case FIREWALL_CHAIN_NONE:
default:
Slog.d(TAG, "setFirewallUidRules() called on invalid chain: " + chain);
}
} catch (RemoteException e) {
Slog.w(TAG, "Error flushing firewall chain " + chain, e);
}
}
}
@Override
public void setFirewallUidRule(int chain, int uid, int rule) {
enforceSystemUid();
synchronized (mQuotaLock) {
setFirewallUidRuleLocked(chain, uid, rule);
}
}
private void setFirewallUidRuleLocked(int chain, int uid, int rule) {
if (updateFirewallUidRuleLocked(chain, uid, rule)) {
try {
mConnector.execute("firewall", "set_uid_rule", getFirewallChainName(chain), uid,
getFirewallRuleName(chain, rule));
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
}
// TODO: now that netd supports batching, NMS should not keep these data structures anymore...
private boolean updateFirewallUidRuleLocked(int chain, int uid, int rule) {
synchronized (mRulesLock) {
SparseIntArray uidFirewallRules = getUidFirewallRulesLR(chain);
final int oldUidFirewallRule = uidFirewallRules.get(uid, FIREWALL_RULE_DEFAULT);
if (DBG) {
Slog.d(TAG, "oldRule = " + oldUidFirewallRule
+ ", newRule=" + rule + " for uid=" + uid + " on chain " + chain);
}
if (oldUidFirewallRule == rule) {
if (DBG) Slog.d(TAG, "!!!!! Skipping change");
// TODO: eventually consider throwing
return false;
}
String ruleName = getFirewallRuleName(chain, rule);
String oldRuleName = getFirewallRuleName(chain, oldUidFirewallRule);
if (rule == NetworkPolicyManager.FIREWALL_RULE_DEFAULT) {
uidFirewallRules.delete(uid);
} else {
uidFirewallRules.put(uid, rule);
}
return !ruleName.equals(oldRuleName);
}
}
private @NonNull String getFirewallRuleName(int chain, int rule) {
String ruleName;
if (getFirewallType(chain) == FIREWALL_TYPE_WHITELIST) {
if (rule == NetworkPolicyManager.FIREWALL_RULE_ALLOW) {
ruleName = "allow";
} else {
ruleName = "deny";
}
} else { // Blacklist mode
if (rule == NetworkPolicyManager.FIREWALL_RULE_DENY) {
ruleName = "deny";
} else {
ruleName = "allow";
}
}
return ruleName;
}
private @NonNull SparseIntArray getUidFirewallRulesLR(int chain) {
switch (chain) {
case FIREWALL_CHAIN_STANDBY:
return mUidFirewallStandbyRules;
case FIREWALL_CHAIN_DOZABLE:
return mUidFirewallDozableRules;
case FIREWALL_CHAIN_POWERSAVE:
return mUidFirewallPowerSaveRules;
case FIREWALL_CHAIN_NONE:
return mUidFirewallRules;
default:
throw new IllegalArgumentException("Unknown chain:" + chain);
}
}
public @NonNull String getFirewallChainName(int chain) {
switch (chain) {
case FIREWALL_CHAIN_STANDBY:
return FIREWALL_CHAIN_NAME_STANDBY;
case FIREWALL_CHAIN_DOZABLE:
return FIREWALL_CHAIN_NAME_DOZABLE;
case FIREWALL_CHAIN_POWERSAVE:
return FIREWALL_CHAIN_NAME_POWERSAVE;
case FIREWALL_CHAIN_NONE:
return FIREWALL_CHAIN_NAME_NONE;
default:
throw new IllegalArgumentException("Unknown chain:" + chain);
}
}
private static void enforceSystemUid() {
final int uid = Binder.getCallingUid();
if (uid != Process.SYSTEM_UID) {
throw new SecurityException("Only available to AID_SYSTEM");
}
}
@Override
public void startClatd(String interfaceName) throws IllegalStateException {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("clatd", "start", interfaceName);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void stopClatd(String interfaceName) throws IllegalStateException {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("clatd", "stop", interfaceName);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public boolean isClatdStarted(String interfaceName) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final NativeDaemonEvent event;
try {
event = mConnector.execute("clatd", "status", interfaceName);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
event.checkCode(ClatdStatusResult);
return event.getMessage().endsWith("started");
}
@Override
public void registerNetworkActivityListener(INetworkActivityListener listener) {
mNetworkActivityListeners.register(listener);
}
@Override
public void unregisterNetworkActivityListener(INetworkActivityListener listener) {
mNetworkActivityListeners.unregister(listener);
}
@Override
public boolean isNetworkActive() {
synchronized (mNetworkActivityListeners) {
return mNetworkActive || mActiveIdleTimers.isEmpty();
}
}
private void reportNetworkActive() {
final int length = mNetworkActivityListeners.beginBroadcast();
try {
for (int i = 0; i < length; i++) {
try {
mNetworkActivityListeners.getBroadcastItem(i).onNetworkActive();
} catch (RemoteException | RuntimeException e) {
}
}
} finally {
mNetworkActivityListeners.finishBroadcast();
}
}
/** {@inheritDoc} */
@Override
public void monitor() {
if (mConnector != null) {
mConnector.monitor();
}
}
@Override
protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return;
pw.println("NetworkManagementService NativeDaemonConnector Log:");
mConnector.dump(fd, pw, args);
pw.println();
pw.print("Bandwidth control enabled: "); pw.println(mBandwidthControlEnabled);
pw.print("mMobileActivityFromRadio="); pw.print(mMobileActivityFromRadio);
pw.print(" mLastPowerStateFromRadio="); pw.println(mLastPowerStateFromRadio);
pw.print("mNetworkActive="); pw.println(mNetworkActive);
synchronized (mQuotaLock) {
pw.print("Active quota ifaces: "); pw.println(mActiveQuotas.toString());
pw.print("Active alert ifaces: "); pw.println(mActiveAlerts.toString());
pw.print("Data saver mode: "); pw.println(mDataSaverMode);
synchronized (mRulesLock) {
dumpUidRuleOnQuotaLocked(pw, "blacklist", mUidRejectOnMetered);
dumpUidRuleOnQuotaLocked(pw, "whitelist", mUidAllowOnMetered);
}
}
synchronized (mRulesLock) {
dumpUidFirewallRule(pw, "", mUidFirewallRules);
pw.print("UID firewall standby chain enabled: "); pw.println(
getFirewallChainState(FIREWALL_CHAIN_STANDBY));
dumpUidFirewallRule(pw, FIREWALL_CHAIN_NAME_STANDBY, mUidFirewallStandbyRules);
pw.print("UID firewall dozable chain enabled: "); pw.println(
getFirewallChainState(FIREWALL_CHAIN_DOZABLE));
dumpUidFirewallRule(pw, FIREWALL_CHAIN_NAME_DOZABLE, mUidFirewallDozableRules);
pw.println("UID firewall powersave chain enabled: " +
getFirewallChainState(FIREWALL_CHAIN_POWERSAVE));
dumpUidFirewallRule(pw, FIREWALL_CHAIN_NAME_POWERSAVE, mUidFirewallPowerSaveRules);
}
synchronized (mIdleTimerLock) {
pw.println("Idle timers:");
for (HashMap.Entry<String, IdleTimerParams> ent : mActiveIdleTimers.entrySet()) {
pw.print(" "); pw.print(ent.getKey()); pw.println(":");
IdleTimerParams params = ent.getValue();
pw.print(" timeout="); pw.print(params.timeout);
pw.print(" type="); pw.print(params.type);
pw.print(" networkCount="); pw.println(params.networkCount);
}
}
pw.print("Firewall enabled: "); pw.println(mFirewallEnabled);
pw.print("Netd service status: " );
if (mNetdService == null) {
pw.println("disconnected");
} else {
try {
final boolean alive = mNetdService.isAlive();
pw.println(alive ? "alive": "dead");
} catch (RemoteException e) {
pw.println("unreachable");
}
}
}
private void dumpUidRuleOnQuotaLocked(PrintWriter pw, String name, SparseBooleanArray list) {
pw.print("UID bandwith control ");
pw.print(name);
pw.print(" rule: [");
final int size = list.size();
for (int i = 0; i < size; i++) {
pw.print(list.keyAt(i));
if (i < size - 1) pw.print(",");
}
pw.println("]");
}
private void dumpUidFirewallRule(PrintWriter pw, String name, SparseIntArray rules) {
pw.print("UID firewall ");
pw.print(name);
pw.print(" rule: [");
final int size = rules.size();
for (int i = 0; i < size; i++) {
pw.print(rules.keyAt(i));
pw.print(":");
pw.print(rules.valueAt(i));
if (i < size - 1) pw.print(",");
}
pw.println("]");
}
@Override
public void createPhysicalNetwork(int netId, String permission) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
if (permission != null) {
mConnector.execute("network", "create", netId, permission);
} else {
mConnector.execute("network", "create", netId);
}
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void createVirtualNetwork(int netId, boolean hasDNS, boolean secure) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("network", "create", netId, "vpn", hasDNS ? "1" : "0",
secure ? "1" : "0");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void removeNetwork(int netId) {
mContext.enforceCallingOrSelfPermission(NETWORK_STACK, TAG);
try {
mNetdService.networkDestroy(netId);
} catch (ServiceSpecificException e) {
Log.w(TAG, "removeNetwork(" + netId + "): ", e);
throw e;
} catch (RemoteException e) {
Log.w(TAG, "removeNetwork(" + netId + "): ", e);
throw e.rethrowAsRuntimeException();
}
}
@Override
public void addInterfaceToNetwork(String iface, int netId) {
modifyInterfaceInNetwork("add", "" + netId, iface);
}
@Override
public void removeInterfaceFromNetwork(String iface, int netId) {
modifyInterfaceInNetwork("remove", "" + netId, iface);
}
private void modifyInterfaceInNetwork(String action, String netId, String iface) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("network", "interface", action, netId, iface);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void addLegacyRouteForNetId(int netId, RouteInfo routeInfo, int uid) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
final Command cmd = new Command("network", "route", "legacy", uid, "add", netId);
// create triplet: interface dest-ip-addr/prefixlength gateway-ip-addr
final LinkAddress la = routeInfo.getDestinationLinkAddress();
cmd.appendArg(routeInfo.getInterface());
cmd.appendArg(la.getAddress().getHostAddress() + "/" + la.getPrefixLength());
if (routeInfo.hasGateway()) {
cmd.appendArg(routeInfo.getGateway().getHostAddress());
}
try {
mConnector.execute(cmd);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void setDefaultNetId(int netId) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("network", "default", "set", netId);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void clearDefaultNetId() {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("network", "default", "clear");
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void setNetworkPermission(int netId, String permission) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
if (permission != null) {
mConnector.execute("network", "permission", "network", "set", permission, netId);
} else {
mConnector.execute("network", "permission", "network", "clear", netId);
}
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void setPermission(String permission, int[] uids) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
Object[] argv = new Object[4 + MAX_UID_RANGES_PER_COMMAND];
argv[0] = "permission";
argv[1] = "user";
argv[2] = "set";
argv[3] = permission;
int argc = 4;
// Avoid overly long commands by limiting number of UIDs per command.
for (int i = 0; i < uids.length; ++i) {
argv[argc++] = uids[i];
if (i == uids.length - 1 || argc == argv.length) {
try {
mConnector.execute("network", Arrays.copyOf(argv, argc));
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
argc = 4;
}
}
}
@Override
public void clearPermission(int[] uids) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
Object[] argv = new Object[3 + MAX_UID_RANGES_PER_COMMAND];
argv[0] = "permission";
argv[1] = "user";
argv[2] = "clear";
int argc = 3;
// Avoid overly long commands by limiting number of UIDs per command.
for (int i = 0; i < uids.length; ++i) {
argv[argc++] = uids[i];
if (i == uids.length - 1 || argc == argv.length) {
try {
mConnector.execute("network", Arrays.copyOf(argv, argc));
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
argc = 3;
}
}
}
@Override
public void allowProtect(int uid) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("network", "protect", "allow", uid);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void denyProtect(int uid) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
try {
mConnector.execute("network", "protect", "deny", uid);
} catch (NativeDaemonConnectorException e) {
throw e.rethrowAsParcelableException();
}
}
@Override
public void addInterfaceToLocalNetwork(String iface, List<RouteInfo> routes) {
modifyInterfaceInNetwork("add", "local", iface);
for (RouteInfo route : routes) {
if (!route.isDefaultRoute()) {
modifyRoute("add", "local", route);
}
}
}
@Override
public void removeInterfaceFromLocalNetwork(String iface) {
modifyInterfaceInNetwork("remove", "local", iface);
}
@Override
public int removeRoutesFromLocalNetwork(List<RouteInfo> routes) {
int failures = 0;
for (RouteInfo route : routes) {
try {
modifyRoute("remove", "local", route);
} catch (IllegalStateException e) {
failures++;
}
}
return failures;
}
@Override
public boolean isNetworkRestricted(int uid) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
return isNetworkRestrictedInternal(uid);
}
private boolean isNetworkRestrictedInternal(int uid) {
synchronized (mRulesLock) {
if (getFirewallChainState(FIREWALL_CHAIN_STANDBY)
&& mUidFirewallStandbyRules.get(uid) == FIREWALL_RULE_DENY) {
if (DBG) Slog.d(TAG, "Uid " + uid + " restricted because of app standby mode");
return true;
}
if (getFirewallChainState(FIREWALL_CHAIN_DOZABLE)
&& mUidFirewallDozableRules.get(uid) != FIREWALL_RULE_ALLOW) {
if (DBG) Slog.d(TAG, "Uid " + uid + " restricted because of device idle mode");
return true;
}
if (getFirewallChainState(FIREWALL_CHAIN_POWERSAVE)
&& mUidFirewallPowerSaveRules.get(uid) != FIREWALL_RULE_ALLOW) {
if (DBG) Slog.d(TAG, "Uid " + uid + " restricted because of power saver mode");
return true;
}
if (mUidRejectOnMetered.get(uid)) {
if (DBG) Slog.d(TAG, "Uid " + uid + " restricted because of no metered data"
+ " in the background");
return true;
}
if (mDataSaverMode && !mUidAllowOnMetered.get(uid)) {
if (DBG) Slog.d(TAG, "Uid " + uid + " restricted because of data saver mode");
return true;
}
return false;
}
}
private void setFirewallChainState(int chain, boolean state) {
synchronized (mRulesLock) {
mFirewallChainStates.put(chain, state);
}
}
private boolean getFirewallChainState(int chain) {
synchronized (mRulesLock) {
return mFirewallChainStates.get(chain);
}
}
@VisibleForTesting
class LocalService extends NetworkManagementInternal {
@Override
public boolean isNetworkRestrictedForUid(int uid) {
return isNetworkRestrictedInternal(uid);
}
}
@VisibleForTesting
Injector getInjector() {
return new Injector();
}
@VisibleForTesting
class Injector {
void setDataSaverMode(boolean dataSaverMode) {
mDataSaverMode = dataSaverMode;
}
void setFirewallChainState(int chain, boolean state) {
NetworkManagementService.this.setFirewallChainState(chain, state);
}
void setFirewallRule(int chain, int uid, int rule) {
synchronized (mRulesLock) {
getUidFirewallRulesLR(chain).put(uid, rule);
}
}
void setUidOnMeteredNetworkList(boolean blacklist, int uid, boolean enable) {
synchronized (mRulesLock) {
if (blacklist) {
mUidRejectOnMetered.put(uid, enable);
} else {
mUidAllowOnMetered.put(uid, enable);
}
}
}
void reset() {
synchronized (mRulesLock) {
setDataSaverMode(false);
final int[] chains = {
FIREWALL_CHAIN_DOZABLE,
FIREWALL_CHAIN_STANDBY,
FIREWALL_CHAIN_POWERSAVE
};
for (int chain : chains) {
setFirewallChainState(chain, false);
getUidFirewallRulesLR(chain).clear();
}
mUidAllowOnMetered.clear();
mUidRejectOnMetered.clear();
}
}
}
}