/*
* Copyright (C) 2008 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.MANAGE_NETWORK_POLICY;
import static android.Manifest.permission.RECEIVE_DATA_ACTIVITY_CHANGE;
import static android.net.ConnectivityManager.CONNECTIVITY_ACTION;
import static android.net.ConnectivityManager.CONNECTIVITY_ACTION_IMMEDIATE;
import static android.net.ConnectivityManager.TYPE_NONE;
import static android.net.ConnectivityManager.TYPE_VPN;
import static android.net.ConnectivityManager.getNetworkTypeName;
import static android.net.ConnectivityManager.isNetworkTypeValid;
import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL;
import static android.net.NetworkPolicyManager.RULE_REJECT_METERED;
import android.app.AlarmManager;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.database.ContentObserver;
import android.net.ConnectivityManager;
import android.net.IConnectivityManager;
import android.net.INetworkManagementEventObserver;
import android.net.INetworkPolicyListener;
import android.net.INetworkPolicyManager;
import android.net.INetworkStatsService;
import android.net.LinkProperties;
import android.net.LinkProperties.CompareResult;
import android.net.MobileDataStateTracker;
import android.net.Network;
import android.net.NetworkAgent;
import android.net.NetworkCapabilities;
import android.net.NetworkConfig;
import android.net.NetworkInfo;
import android.net.NetworkInfo.DetailedState;
import android.net.NetworkMisc;
import android.net.NetworkQuotaInfo;
import android.net.NetworkRequest;
import android.net.NetworkState;
import android.net.NetworkStateTracker;
import android.net.NetworkUtils;
import android.net.Proxy;
import android.net.ProxyInfo;
import android.net.RouteInfo;
import android.net.SamplingDataTracker;
import android.net.UidRange;
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
import android.os.FileUtils;
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.ParcelFileDescriptor;
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteException;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.Settings;
import android.security.Credentials;
import android.security.KeyStore;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.util.Slog;
import android.util.SparseArray;
import android.util.SparseIntArray;
import android.util.Xml;
import com.android.internal.R;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.app.IBatteryStats;
import com.android.internal.net.LegacyVpnInfo;
import com.android.internal.net.NetworkStatsFactory;
import com.android.internal.net.VpnConfig;
import com.android.internal.net.VpnProfile;
import com.android.internal.telephony.DctConstants;
import com.android.internal.util.AsyncChannel;
import com.android.internal.util.IndentingPrintWriter;
import com.android.internal.util.XmlUtils;
import com.android.server.am.BatteryStatsService;
import com.android.server.connectivity.DataConnectionStats;
import com.android.server.connectivity.Nat464Xlat;
import com.android.server.connectivity.NetworkAgentInfo;
import com.android.server.connectivity.NetworkMonitor;
import com.android.server.connectivity.PacManager;
import com.android.server.connectivity.PermissionMonitor;
import com.android.server.connectivity.Tethering;
import com.android.server.connectivity.Vpn;
import com.android.server.net.BaseNetworkObserver;
import com.android.server.net.LockdownVpnTracker;
import com.google.android.collect.Lists;
import com.google.android.collect.Sets;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.concurrent.atomic.AtomicInteger;
/**
* @hide
*/
public class ConnectivityService extends IConnectivityManager.Stub
implements PendingIntent.OnFinished {
private static final String TAG = "ConnectivityService";
private static final boolean DBG = true;
private static final boolean VDBG = false;
// network sampling debugging
private static final boolean SAMPLE_DBG = false;
private static final boolean LOGD_RULES = false;
// TODO: create better separation between radio types and network types
// how long to wait before switching back to a radio's default network
private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000;
// system property that can override the above value
private static final String NETWORK_RESTORE_DELAY_PROP_NAME =
"android.telephony.apn-restore";
// Default value if FAIL_FAST_TIME_MS is not set
private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000;
// system property that can override DEFAULT_FAIL_FAST_TIME_MS
private static final String FAIL_FAST_TIME_MS =
"persist.radio.fail_fast_time_ms";
private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED =
"android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED";
private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0;
// How long to delay to removal of a pending intent based request.
// See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS
private final int mReleasePendingIntentDelayMs;
private PendingIntent mSampleIntervalElapsedIntent;
// Set network sampling interval at 12 minutes, this way, even if the timers get
// aggregated, it will fire at around 15 minutes, which should allow us to
// aggregate this timer with other timers (specially the socket keep alive timers)
private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60);
// start network sampling a minute after booting ...
private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60);
AlarmManager mAlarmManager;
private Tethering mTethering;
private final PermissionMonitor mPermissionMonitor;
private KeyStore mKeyStore;
@GuardedBy("mVpns")
private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>();
private boolean mLockdownEnabled;
private LockdownVpnTracker mLockdownTracker;
/** Lock around {@link #mUidRules} and {@link #mMeteredIfaces}. */
private Object mRulesLock = new Object();
/** Currently active network rules by UID. */
private SparseIntArray mUidRules = new SparseIntArray();
/** Set of ifaces that are costly. */
private HashSet<String> mMeteredIfaces = Sets.newHashSet();
/**
* Sometimes we want to refer to the individual network state
* trackers separately, and sometimes we just want to treat them
* abstractly.
*/
private NetworkStateTracker mNetTrackers[];
private Context mContext;
private int mNetworkPreference;
// 0 is full bad, 100 is full good
private int mDefaultInetConditionPublished = 0;
private Object mDnsLock = new Object();
private int mNumDnsEntries;
private boolean mTestMode;
private static ConnectivityService sServiceInstance;
private INetworkManagementService mNetd;
private INetworkStatsService mStatsService;
private INetworkPolicyManager mPolicyManager;
private String mCurrentTcpBufferSizes;
private static final int ENABLED = 1;
private static final int DISABLED = 0;
// Arguments to rematchNetworkAndRequests()
private enum NascentState {
// Indicates a network was just validated for the first time. If the network is found to
// be unwanted (i.e. not satisfy any NetworkRequests) it is torn down.
JUST_VALIDATED,
// Indicates a network was not validated for the first time immediately prior to this call.
NOT_JUST_VALIDATED
};
private enum ReapUnvalidatedNetworks {
// Tear down unvalidated networks that have no chance (i.e. even if validated) of becoming
// the highest scoring network satisfying a NetworkRequest. This should be passed when it's
// known that there may be unvalidated networks that could potentially be reaped, and when
// all networks have been rematched against all NetworkRequests.
REAP,
// Don't reap unvalidated networks. This should be passed when it's known that there are
// no unvalidated networks that could potentially be reaped, and when some networks have
// not yet been rematched against all NetworkRequests.
DONT_REAP
};
/**
* used internally to change our mobile data enabled flag
*/
private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2;
/**
* used internally to clear a wakelock when transitioning
* from one net to another. Clear happens when we get a new
* network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens
* after a timeout if no network is found (typically 1 min).
*/
private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8;
/**
* used internally to reload global proxy settings
*/
private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9;
/**
* used internally to set external dependency met/unmet
* arg1 = ENABLED (met) or DISABLED (unmet)
* arg2 = NetworkType
*/
private static final int EVENT_SET_DEPENDENCY_MET = 10;
/**
* used internally to send a sticky broadcast delayed.
*/
private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11;
/**
* Used internally to disable fail fast of mobile data
*/
private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14;
/**
* used internally to indicate that data sampling interval is up
*/
private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15;
/**
* PAC manager has received new port.
*/
private static final int EVENT_PROXY_HAS_CHANGED = 16;
/**
* used internally when registering NetworkFactories
* obj = NetworkFactoryInfo
*/
private static final int EVENT_REGISTER_NETWORK_FACTORY = 17;
/**
* used internally when registering NetworkAgents
* obj = Messenger
*/
private static final int EVENT_REGISTER_NETWORK_AGENT = 18;
/**
* used to add a network request
* includes a NetworkRequestInfo
*/
private static final int EVENT_REGISTER_NETWORK_REQUEST = 19;
/**
* indicates a timeout period is over - check if we had a network yet or not
* and if not, call the timeout calback (but leave the request live until they
* cancel it.
* includes a NetworkRequestInfo
*/
private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20;
/**
* used to add a network listener - no request
* includes a NetworkRequestInfo
*/
private static final int EVENT_REGISTER_NETWORK_LISTENER = 21;
/**
* used to remove a network request, either a listener or a real request
* arg1 = UID of caller
* obj = NetworkRequest
*/
private static final int EVENT_RELEASE_NETWORK_REQUEST = 22;
/**
* used internally when registering NetworkFactories
* obj = Messenger
*/
private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23;
/**
* used internally to expire a wakelock when transitioning
* from one net to another. Expire happens when we fail to find
* a new network (typically after 1 minute) -
* EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found
* a replacement network.
*/
private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24;
/**
* Used internally to indicate the system is ready.
*/
private static final int EVENT_SYSTEM_READY = 25;
/**
* used to add a network request with a pending intent
* includes a NetworkRequestInfo
*/
private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26;
/**
* used to remove a pending intent and its associated network request.
* arg1 = UID of caller
* obj = PendingIntent
*/
private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27;
/** Handler used for internal events. */
final private InternalHandler mHandler;
/** Handler used for incoming {@link NetworkStateTracker} events. */
final private NetworkStateTrackerHandler mTrackerHandler;
private boolean mSystemReady;
private Intent mInitialBroadcast;
private PowerManager.WakeLock mNetTransitionWakeLock;
private String mNetTransitionWakeLockCausedBy = "";
private int mNetTransitionWakeLockSerialNumber;
private int mNetTransitionWakeLockTimeout;
private final PowerManager.WakeLock mPendingIntentWakeLock;
private InetAddress mDefaultDns;
// used in DBG mode to track inet condition reports
private static final int INET_CONDITION_LOG_MAX_SIZE = 15;
private ArrayList mInetLog;
// track the current default http proxy - tell the world if we get a new one (real change)
private volatile ProxyInfo mDefaultProxy = null;
private Object mProxyLock = new Object();
private boolean mDefaultProxyDisabled = false;
// track the global proxy.
private ProxyInfo mGlobalProxy = null;
private PacManager mPacManager = null;
private SettingsObserver mSettingsObserver;
private UserManager mUserManager;
NetworkConfig[] mNetConfigs;
int mNetworksDefined;
// the set of network types that can only be enabled by system/sig apps
List mProtectedNetworks;
private DataConnectionStats mDataConnectionStats;
private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0);
TelephonyManager mTelephonyManager;
// sequence number for Networks; keep in sync with system/netd/NetworkController.cpp
private final static int MIN_NET_ID = 100; // some reserved marks
private final static int MAX_NET_ID = 65535;
private int mNextNetId = MIN_NET_ID;
// sequence number of NetworkRequests
private int mNextNetworkRequestId = 1;
/**
* Implements support for the legacy "one network per network type" model.
*
* We used to have a static array of NetworkStateTrackers, one for each
* network type, but that doesn't work any more now that we can have,
* for example, more that one wifi network. This class stores all the
* NetworkAgentInfo objects that support a given type, but the legacy
* API will only see the first one.
*
* It serves two main purposes:
*
* 1. Provide information about "the network for a given type" (since this
* API only supports one).
* 2. Send legacy connectivity change broadcasts. Broadcasts are sent if
* the first network for a given type changes, or if the default network
* changes.
*/
private class LegacyTypeTracker {
private static final boolean DBG = true;
private static final boolean VDBG = false;
private static final String TAG = "CSLegacyTypeTracker";
/**
* Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS).
* Each list holds references to all NetworkAgentInfos that are used to
* satisfy requests for that network type.
*
* This array is built out at startup such that an unsupported network
* doesn't get an ArrayList instance, making this a tristate:
* unsupported, supported but not active and active.
*
* The actual lists are populated when we scan the network types that
* are supported on this device.
*/
private ArrayList<NetworkAgentInfo> mTypeLists[];
public LegacyTypeTracker() {
mTypeLists = (ArrayList<NetworkAgentInfo>[])
new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1];
}
public void addSupportedType(int type) {
if (mTypeLists[type] != null) {
throw new IllegalStateException(
"legacy list for type " + type + "already initialized");
}
mTypeLists[type] = new ArrayList<NetworkAgentInfo>();
}
public boolean isTypeSupported(int type) {
return isNetworkTypeValid(type) && mTypeLists[type] != null;
}
public NetworkAgentInfo getNetworkForType(int type) {
if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) {
return mTypeLists[type].get(0);
} else {
return null;
}
}
private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) {
if (DBG) {
log("Sending " + (connected ? "connected" : "disconnected") +
" broadcast for type " + type + " " + nai.name() +
" isDefaultNetwork=" + isDefaultNetwork(nai));
}
}
/** Adds the given network to the specified legacy type list. */
public void add(int type, NetworkAgentInfo nai) {
if (!isTypeSupported(type)) {
return; // Invalid network type.
}
if (VDBG) log("Adding agent " + nai + " for legacy network type " + type);
ArrayList<NetworkAgentInfo> list = mTypeLists[type];
if (list.contains(nai)) {
loge("Attempting to register duplicate agent for type " + type + ": " + nai);
return;
}
list.add(nai);
// Send a broadcast if this is the first network of its type or if it's the default.
if (list.size() == 1 || isDefaultNetwork(nai)) {
maybeLogBroadcast(nai, true, type);
sendLegacyNetworkBroadcast(nai, true, type);
}
}
/** Removes the given network from the specified legacy type list. */
public void remove(int type, NetworkAgentInfo nai) {
ArrayList<NetworkAgentInfo> list = mTypeLists[type];
if (list == null || list.isEmpty()) {
return;
}
boolean wasFirstNetwork = list.get(0).equals(nai);
if (!list.remove(nai)) {
return;
}
if (wasFirstNetwork || isDefaultNetwork(nai)) {
maybeLogBroadcast(nai, false, type);
sendLegacyNetworkBroadcast(nai, false, type);
}
if (!list.isEmpty() && wasFirstNetwork) {
if (DBG) log("Other network available for type " + type +
", sending connected broadcast");
maybeLogBroadcast(list.get(0), false, type);
sendLegacyNetworkBroadcast(list.get(0), false, type);
}
}
/** Removes the given network from all legacy type lists. */
public void remove(NetworkAgentInfo nai) {
if (VDBG) log("Removing agent " + nai);
for (int type = 0; type < mTypeLists.length; type++) {
remove(type, nai);
}
}
private String naiToString(NetworkAgentInfo nai) {
String name = (nai != null) ? nai.name() : "null";
String state = (nai.networkInfo != null) ?
nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() :
"???/???";
return name + " " + state;
}
public void dump(IndentingPrintWriter pw) {
for (int type = 0; type < mTypeLists.length; type++) {
if (mTypeLists[type] == null) continue;
pw.print(type + " ");
pw.increaseIndent();
if (mTypeLists[type].size() == 0) pw.println("none");
for (NetworkAgentInfo nai : mTypeLists[type]) {
pw.println(naiToString(nai));
}
pw.decreaseIndent();
}
}
// This class needs its own log method because it has a different TAG.
private void log(String s) {
Slog.d(TAG, s);
}
}
private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker();
public ConnectivityService(Context context, INetworkManagementService netManager,
INetworkStatsService statsService, INetworkPolicyManager policyManager) {
if (DBG) log("ConnectivityService starting up");
NetworkCapabilities netCap = new NetworkCapabilities();
netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED);
mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId());
NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(),
NetworkRequestInfo.REQUEST);
mNetworkRequests.put(mDefaultRequest, nri);
HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread");
handlerThread.start();
mHandler = new InternalHandler(handlerThread.getLooper());
mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper());
// setup our unique device name
if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) {
String id = Settings.Secure.getString(context.getContentResolver(),
Settings.Secure.ANDROID_ID);
if (id != null && id.length() > 0) {
String name = new String("android-").concat(id);
SystemProperties.set("net.hostname", name);
}
}
// read our default dns server ip
String dns = Settings.Global.getString(context.getContentResolver(),
Settings.Global.DEFAULT_DNS_SERVER);
if (dns == null || dns.length() == 0) {
dns = context.getResources().getString(
com.android.internal.R.string.config_default_dns_server);
}
try {
mDefaultDns = NetworkUtils.numericToInetAddress(dns);
} catch (IllegalArgumentException e) {
loge("Error setting defaultDns using " + dns);
}
mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(),
Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000);
mContext = checkNotNull(context, "missing Context");
mNetd = checkNotNull(netManager, "missing INetworkManagementService");
mStatsService = checkNotNull(statsService, "missing INetworkStatsService");
mPolicyManager = checkNotNull(policyManager, "missing INetworkPolicyManager");
mKeyStore = KeyStore.getInstance();
mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
try {
mPolicyManager.registerListener(mPolicyListener);
} catch (RemoteException e) {
// ouch, no rules updates means some processes may never get network
loge("unable to register INetworkPolicyListener" + e.toString());
}
final PowerManager powerManager = (PowerManager) context.getSystemService(
Context.POWER_SERVICE);
mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
mNetTransitionWakeLockTimeout = mContext.getResources().getInteger(
com.android.internal.R.integer.config_networkTransitionTimeout);
mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
mNetTrackers = new NetworkStateTracker[
ConnectivityManager.MAX_NETWORK_TYPE+1];
mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1];
// TODO: What is the "correct" way to do determine if this is a wifi only device?
boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false);
log("wifiOnly=" + wifiOnly);
String[] naStrings = context.getResources().getStringArray(
com.android.internal.R.array.networkAttributes);
for (String naString : naStrings) {
try {
NetworkConfig n = new NetworkConfig(naString);
if (VDBG) log("naString=" + naString + " config=" + n);
if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) {
loge("Error in networkAttributes - ignoring attempt to define type " +
n.type);
continue;
}
if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) {
log("networkAttributes - ignoring mobile as this dev is wifiOnly " +
n.type);
continue;
}
if (mNetConfigs[n.type] != null) {
loge("Error in networkAttributes - ignoring attempt to redefine type " +
n.type);
continue;
}
mLegacyTypeTracker.addSupportedType(n.type);
mNetConfigs[n.type] = n;
mNetworksDefined++;
} catch(Exception e) {
// ignore it - leave the entry null
}
}
// Forcibly add TYPE_VPN as a supported type, if it has not already been added via config.
if (mNetConfigs[TYPE_VPN] == null) {
// mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we
// don't need to add TYPE_VPN to mNetConfigs.
mLegacyTypeTracker.addSupportedType(TYPE_VPN);
mNetworksDefined++; // used only in the log() statement below.
}
if (VDBG) log("mNetworksDefined=" + mNetworksDefined);
mProtectedNetworks = new ArrayList<Integer>();
int[] protectedNetworks = context.getResources().getIntArray(
com.android.internal.R.array.config_protectedNetworks);
for (int p : protectedNetworks) {
if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) {
mProtectedNetworks.add(p);
} else {
if (DBG) loge("Ignoring protectedNetwork " + p);
}
}
mTestMode = SystemProperties.get("cm.test.mode").equals("true")
&& SystemProperties.get("ro.build.type").equals("eng");
mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper());
mPermissionMonitor = new PermissionMonitor(mContext, mNetd);
//set up the listener for user state for creating user VPNs
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_USER_STARTING);
intentFilter.addAction(Intent.ACTION_USER_STOPPING);
mContext.registerReceiverAsUser(
mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null);
try {
mNetd.registerObserver(mTethering);
mNetd.registerObserver(mDataActivityObserver);
} catch (RemoteException e) {
loge("Error registering observer :" + e);
}
if (DBG) {
mInetLog = new ArrayList();
}
mSettingsObserver = new SettingsObserver(mHandler, EVENT_APPLY_GLOBAL_HTTP_PROXY);
mSettingsObserver.observe(mContext);
mDataConnectionStats = new DataConnectionStats(mContext);
mDataConnectionStats.startMonitoring();
mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
IntentFilter filter = new IntentFilter();
filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED);
mContext.registerReceiver(
new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) {
mHandler.sendMessage(mHandler.obtainMessage
(EVENT_SAMPLE_INTERVAL_ELAPSED));
}
}
},
new IntentFilter(filter));
mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED);
mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
}
private synchronized int nextNetworkRequestId() {
return mNextNetworkRequestId++;
}
private void assignNextNetId(NetworkAgentInfo nai) {
synchronized (mNetworkForNetId) {
for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) {
int netId = mNextNetId;
if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID;
// Make sure NetID unused. http://b/16815182
if (mNetworkForNetId.get(netId) == null) {
nai.network = new Network(netId);
mNetworkForNetId.put(netId, nai);
return;
}
}
}
throw new IllegalStateException("No free netIds");
}
private boolean teardown(NetworkStateTracker netTracker) {
if (netTracker.teardown()) {
netTracker.setTeardownRequested(true);
return true;
} else {
return false;
}
}
private NetworkState getFilteredNetworkState(int networkType, int uid) {
NetworkInfo info = null;
LinkProperties lp = null;
NetworkCapabilities nc = null;
Network network = null;
String subscriberId = null;
if (mLegacyTypeTracker.isTypeSupported(networkType)) {
NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
if (nai != null) {
synchronized (nai) {
info = new NetworkInfo(nai.networkInfo);
lp = new LinkProperties(nai.linkProperties);
nc = new NetworkCapabilities(nai.networkCapabilities);
network = new Network(nai.network);
subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null;
}
info.setType(networkType);
} else {
info = new NetworkInfo(networkType, 0, getNetworkTypeName(networkType), "");
info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null);
info.setIsAvailable(true);
lp = new LinkProperties();
nc = new NetworkCapabilities();
network = null;
}
info = getFilteredNetworkInfo(info, lp, uid);
}
return new NetworkState(info, lp, nc, network, subscriberId, null);
}
private NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) {
if (network == null) {
return null;
}
synchronized (mNetworkForNetId) {
return mNetworkForNetId.get(network.netId);
}
};
private Network[] getVpnUnderlyingNetworks(int uid) {
if (!mLockdownEnabled) {
int user = UserHandle.getUserId(uid);
synchronized (mVpns) {
Vpn vpn = mVpns.get(user);
if (vpn != null && vpn.appliesToUid(uid)) {
return vpn.getUnderlyingNetworks();
}
}
}
return null;
}
private NetworkState getUnfilteredActiveNetworkState(int uid) {
NetworkInfo info = null;
LinkProperties lp = null;
NetworkCapabilities nc = null;
Network network = null;
String subscriberId = null;
NetworkAgentInfo nai = mNetworkForRequestId.get(mDefaultRequest.requestId);
final Network[] networks = getVpnUnderlyingNetworks(uid);
if (networks != null) {
// getUnderlyingNetworks() returns:
// null => there was no VPN, or the VPN didn't specify anything, so we use the default.
// empty array => the VPN explicitly said "no default network".
// non-empty array => the VPN specified one or more default networks; we use the
// first one.
if (networks.length > 0) {
nai = getNetworkAgentInfoForNetwork(networks[0]);
} else {
nai = null;
}
}
if (nai != null) {
synchronized (nai) {
info = new NetworkInfo(nai.networkInfo);
lp = new LinkProperties(nai.linkProperties);
nc = new NetworkCapabilities(nai.networkCapabilities);
network = new Network(nai.network);
subscriberId = (nai.networkMisc != null) ? nai.networkMisc.subscriberId : null;
}
}
return new NetworkState(info, lp, nc, network, subscriberId, null);
}
/**
* Check if UID should be blocked from using the network with the given LinkProperties.
*/
private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) {
final boolean networkCostly;
final int uidRules;
final String iface = (lp == null ? "" : lp.getInterfaceName());
synchronized (mRulesLock) {
networkCostly = mMeteredIfaces.contains(iface);
uidRules = mUidRules.get(uid, RULE_ALLOW_ALL);
}
if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) {
return true;
}
// no restrictive rules; network is visible
return false;
}
/**
* Return a filtered {@link NetworkInfo}, potentially marked
* {@link DetailedState#BLOCKED} based on
* {@link #isNetworkWithLinkPropertiesBlocked}.
*/
private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, LinkProperties lp, int uid) {
if (info != null && isNetworkWithLinkPropertiesBlocked(lp, uid)) {
// network is blocked; clone and override state
info = new NetworkInfo(info);
info.setDetailedState(DetailedState.BLOCKED, null, null);
if (DBG) {
log("returning Blocked NetworkInfo for ifname=" +
lp.getInterfaceName() + ", uid=" + uid);
}
}
if (info != null && mLockdownTracker != null) {
info = mLockdownTracker.augmentNetworkInfo(info);
if (DBG) log("returning Locked NetworkInfo");
}
return info;
}
/**
* Return NetworkInfo for the active (i.e., connected) network interface.
* It is assumed that at most one network is active at a time. If more
* than one is active, it is indeterminate which will be returned.
* @return the info for the active network, or {@code null} if none is
* active
*/
@Override
public NetworkInfo getActiveNetworkInfo() {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
NetworkState state = getUnfilteredActiveNetworkState(uid);
return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid);
}
/**
* Find the first Provisioning network.
*
* @return NetworkInfo or null if none.
*/
private NetworkInfo getProvisioningNetworkInfo() {
enforceAccessPermission();
// Find the first Provisioning Network
NetworkInfo provNi = null;
for (NetworkInfo ni : getAllNetworkInfo()) {
if (ni.isConnectedToProvisioningNetwork()) {
provNi = ni;
break;
}
}
if (DBG) log("getProvisioningNetworkInfo: X provNi=" + provNi);
return provNi;
}
/**
* Find the first Provisioning network or the ActiveDefaultNetwork
* if there is no Provisioning network
*
* @return NetworkInfo or null if none.
*/
@Override
public NetworkInfo getProvisioningOrActiveNetworkInfo() {
enforceAccessPermission();
NetworkInfo provNi = getProvisioningNetworkInfo();
if (provNi == null) {
provNi = getActiveNetworkInfo();
}
if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi);
return provNi;
}
public NetworkInfo getActiveNetworkInfoUnfiltered() {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
NetworkState state = getUnfilteredActiveNetworkState(uid);
return state.networkInfo;
}
@Override
public NetworkInfo getActiveNetworkInfoForUid(int uid) {
enforceConnectivityInternalPermission();
NetworkState state = getUnfilteredActiveNetworkState(uid);
return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid);
}
@Override
public NetworkInfo getNetworkInfo(int networkType) {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
if (getVpnUnderlyingNetworks(uid) != null) {
// A VPN is active, so we may need to return one of its underlying networks. This
// information is not available in LegacyTypeTracker, so we have to get it from
// getUnfilteredActiveNetworkState.
NetworkState state = getUnfilteredActiveNetworkState(uid);
if (state.networkInfo != null && state.networkInfo.getType() == networkType) {
return getFilteredNetworkInfo(state.networkInfo, state.linkProperties, uid);
}
}
NetworkState state = getFilteredNetworkState(networkType, uid);
return state.networkInfo;
}
@Override
public NetworkInfo getNetworkInfoForNetwork(Network network) {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
NetworkInfo info = null;
NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
if (nai != null) {
synchronized (nai) {
info = new NetworkInfo(nai.networkInfo);
info = getFilteredNetworkInfo(info, nai.linkProperties, uid);
}
}
return info;
}
@Override
public NetworkInfo[] getAllNetworkInfo() {
enforceAccessPermission();
final ArrayList<NetworkInfo> result = Lists.newArrayList();
for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE;
networkType++) {
NetworkInfo info = getNetworkInfo(networkType);
if (info != null) {
result.add(info);
}
}
return result.toArray(new NetworkInfo[result.size()]);
}
@Override
public Network getNetworkForType(int networkType) {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
NetworkState state = getFilteredNetworkState(networkType, uid);
if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid)) {
return state.network;
}
return null;
}
@Override
public Network[] getAllNetworks() {
enforceAccessPermission();
final ArrayList<Network> result = new ArrayList();
synchronized (mNetworkForNetId) {
for (int i = 0; i < mNetworkForNetId.size(); i++) {
result.add(new Network(mNetworkForNetId.valueAt(i).network));
}
}
return result.toArray(new Network[result.size()]);
}
private NetworkCapabilities getNetworkCapabilitiesAndValidation(NetworkAgentInfo nai) {
if (nai != null) {
synchronized (nai) {
if (nai.created) {
NetworkCapabilities nc = new NetworkCapabilities(nai.networkCapabilities);
if (nai.lastValidated) {
nc.addCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED);
} else {
nc.removeCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED);
}
return nc;
}
}
}
return null;
}
@Override
public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) {
// The basic principle is: if an app's traffic could possibly go over a
// network, without the app doing anything multinetwork-specific,
// (hence, by "default"), then include that network's capabilities in
// the array.
//
// In the normal case, app traffic only goes over the system's default
// network connection, so that's the only network returned.
//
// With a VPN in force, some app traffic may go into the VPN, and thus
// over whatever underlying networks the VPN specifies, while other app
// traffic may go over the system default network (e.g.: a split-tunnel
// VPN, or an app disallowed by the VPN), so the set of networks
// returned includes the VPN's underlying networks and the system
// default.
enforceAccessPermission();
HashMap<Network, NetworkCapabilities> result = new HashMap<Network, NetworkCapabilities>();
NetworkAgentInfo nai = getDefaultNetwork();
NetworkCapabilities nc = getNetworkCapabilitiesAndValidation(getDefaultNetwork());
if (nc != null) {
result.put(nai.network, nc);
}
if (!mLockdownEnabled) {
synchronized (mVpns) {
Vpn vpn = mVpns.get(userId);
if (vpn != null) {
Network[] networks = vpn.getUnderlyingNetworks();
if (networks != null) {
for (Network network : networks) {
nai = getNetworkAgentInfoForNetwork(network);
nc = getNetworkCapabilitiesAndValidation(nai);
if (nc != null) {
result.put(nai.network, nc);
}
}
}
}
}
}
NetworkCapabilities[] out = new NetworkCapabilities[result.size()];
out = result.values().toArray(out);
return out;
}
@Override
public boolean isNetworkSupported(int networkType) {
enforceAccessPermission();
return mLegacyTypeTracker.isTypeSupported(networkType);
}
/**
* Return LinkProperties for the active (i.e., connected) default
* network interface. It is assumed that at most one default network
* is active at a time. If more than one is active, it is indeterminate
* which will be returned.
* @return the ip properties for the active network, or {@code null} if
* none is active
*/
@Override
public LinkProperties getActiveLinkProperties() {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
NetworkState state = getUnfilteredActiveNetworkState(uid);
return state.linkProperties;
}
@Override
public LinkProperties getLinkPropertiesForType(int networkType) {
enforceAccessPermission();
NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
if (nai != null) {
synchronized (nai) {
return new LinkProperties(nai.linkProperties);
}
}
return null;
}
// TODO - this should be ALL networks
@Override
public LinkProperties getLinkProperties(Network network) {
enforceAccessPermission();
NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
if (nai != null) {
synchronized (nai) {
return new LinkProperties(nai.linkProperties);
}
}
return null;
}
@Override
public NetworkCapabilities getNetworkCapabilities(Network network) {
enforceAccessPermission();
NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
if (nai != null) {
synchronized (nai) {
return new NetworkCapabilities(nai.networkCapabilities);
}
}
return null;
}
@Override
public NetworkState[] getAllNetworkState() {
// Require internal since we're handing out IMSI details
enforceConnectivityInternalPermission();
final ArrayList<NetworkState> result = Lists.newArrayList();
for (Network network : getAllNetworks()) {
final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
if (nai != null) {
synchronized (nai) {
final String subscriberId = (nai.networkMisc != null)
? nai.networkMisc.subscriberId : null;
result.add(new NetworkState(nai.networkInfo, nai.linkProperties,
nai.networkCapabilities, network, subscriberId, null));
}
}
}
return result.toArray(new NetworkState[result.size()]);
}
@Override
public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
final NetworkState state = getUnfilteredActiveNetworkState(uid);
if (state.networkInfo != null) {
try {
return mPolicyManager.getNetworkQuotaInfo(state);
} catch (RemoteException e) {
}
}
return null;
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public boolean isActiveNetworkMetered() {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
return isActiveNetworkMeteredUnchecked(uid);
} finally {
Binder.restoreCallingIdentity(token);
}
}
private boolean isActiveNetworkMeteredUnchecked(int uid) {
final NetworkState state = getUnfilteredActiveNetworkState(uid);
if (state.networkInfo != null) {
try {
return mPolicyManager.isNetworkMetered(state);
} catch (RemoteException e) {
}
}
return false;
}
private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() {
@Override
public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) {
int deviceType = Integer.parseInt(label);
sendDataActivityBroadcast(deviceType, active, tsNanos);
}
};
/**
* Ensure that a network route exists to deliver traffic to the specified
* host via the specified network interface.
* @param networkType the type of the network over which traffic to the
* specified host is to be routed
* @param hostAddress the IP address of the host to which the route is
* desired
* @return {@code true} on success, {@code false} on failure
*/
public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) {
enforceChangePermission();
if (mProtectedNetworks.contains(networkType)) {
enforceConnectivityInternalPermission();
}
InetAddress addr;
try {
addr = InetAddress.getByAddress(hostAddress);
} catch (UnknownHostException e) {
if (DBG) log("requestRouteToHostAddress got " + e.toString());
return false;
}
if (!ConnectivityManager.isNetworkTypeValid(networkType)) {
if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType);
return false;
}
NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
if (nai == null) {
if (mLegacyTypeTracker.isTypeSupported(networkType) == false) {
if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType);
} else {
if (DBG) log("requestRouteToHostAddress on down network: " + networkType);
}
return false;
}
DetailedState netState;
synchronized (nai) {
netState = nai.networkInfo.getDetailedState();
}
if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) {
if (VDBG) {
log("requestRouteToHostAddress on down network "
+ "(" + networkType + ") - dropped"
+ " netState=" + netState);
}
return false;
}
final int uid = Binder.getCallingUid();
final long token = Binder.clearCallingIdentity();
try {
LinkProperties lp;
int netId;
synchronized (nai) {
lp = nai.linkProperties;
netId = nai.network.netId;
}
boolean ok = addLegacyRouteToHost(lp, addr, netId, uid);
if (DBG) log("requestRouteToHostAddress ok=" + ok);
return ok;
} finally {
Binder.restoreCallingIdentity(token);
}
}
private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) {
RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr);
if (bestRoute == null) {
bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName());
} else {
String iface = bestRoute.getInterface();
if (bestRoute.getGateway().equals(addr)) {
// if there is no better route, add the implied hostroute for our gateway
bestRoute = RouteInfo.makeHostRoute(addr, iface);
} else {
// if we will connect to this through another route, add a direct route
// to it's gateway
bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface);
}
}
if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface());
try {
mNetd.addLegacyRouteForNetId(netId, bestRoute, uid);
} catch (Exception e) {
// never crash - catch them all
if (DBG) loge("Exception trying to add a route: " + e);
return false;
}
return true;
}
public void setDataDependency(int networkType, boolean met) {
enforceConnectivityInternalPermission();
mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET,
(met ? ENABLED : DISABLED), networkType));
}
private void handleSetDependencyMet(int networkType, boolean met) {
if (mNetTrackers[networkType] != null) {
if (DBG) {
log("handleSetDependencyMet(" + networkType + ", " + met + ")");
}
mNetTrackers[networkType].setDependencyMet(met);
}
}
private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() {
@Override
public void onUidRulesChanged(int uid, int uidRules) {
// caller is NPMS, since we only register with them
if (LOGD_RULES) {
log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")");
}
synchronized (mRulesLock) {
// skip update when we've already applied rules
final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL);
if (oldRules == uidRules) return;
mUidRules.put(uid, uidRules);
}
// TODO: notify UID when it has requested targeted updates
}
@Override
public void onMeteredIfacesChanged(String[] meteredIfaces) {
// caller is NPMS, since we only register with them
if (LOGD_RULES) {
log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")");
}
synchronized (mRulesLock) {
mMeteredIfaces.clear();
for (String iface : meteredIfaces) {
mMeteredIfaces.add(iface);
}
}
}
@Override
public void onRestrictBackgroundChanged(boolean restrictBackground) {
// caller is NPMS, since we only register with them
if (LOGD_RULES) {
log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")");
}
// kick off connectivity change broadcast for active network, since
// global background policy change is radical.
// TODO: Dead code; remove.
//
// final int networkType = mActiveDefaultNetwork;
// if (isNetworkTypeValid(networkType)) {
// final NetworkStateTracker tracker = mNetTrackers[networkType];
// if (tracker != null) {
// final NetworkInfo info = tracker.getNetworkInfo();
// if (info != null && info.isConnected()) {
// sendConnectedBroadcast(info);
// }
// }
// }
}
};
private void enforceInternetPermission() {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.INTERNET,
"ConnectivityService");
}
private void enforceAccessPermission() {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.ACCESS_NETWORK_STATE,
"ConnectivityService");
}
private void enforceChangePermission() {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.CHANGE_NETWORK_STATE,
"ConnectivityService");
}
private void enforceTetherAccessPermission() {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.ACCESS_NETWORK_STATE,
"ConnectivityService");
}
private void enforceConnectivityInternalPermission() {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.CONNECTIVITY_INTERNAL,
"ConnectivityService");
}
public void sendConnectedBroadcast(NetworkInfo info) {
enforceConnectivityInternalPermission();
sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE);
sendGeneralBroadcast(info, CONNECTIVITY_ACTION);
}
private void sendInetConditionBroadcast(NetworkInfo info) {
sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION);
}
private Intent makeGeneralIntent(NetworkInfo info, String bcastType) {
if (mLockdownTracker != null) {
info = mLockdownTracker.augmentNetworkInfo(info);
}
Intent intent = new Intent(bcastType);
intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info));
intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType());
if (info.isFailover()) {
intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true);
info.setFailover(false);
}
if (info.getReason() != null) {
intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason());
}
if (info.getExtraInfo() != null) {
intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO,
info.getExtraInfo());
}
intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished);
return intent;
}
private void sendGeneralBroadcast(NetworkInfo info, String bcastType) {
sendStickyBroadcast(makeGeneralIntent(info, bcastType));
}
private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) {
Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE);
intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType);
intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active);
intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos);
final long ident = Binder.clearCallingIdentity();
try {
mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL,
RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void sendStickyBroadcast(Intent intent) {
synchronized(this) {
if (!mSystemReady) {
mInitialBroadcast = new Intent(intent);
}
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
if (DBG) {
log("sendStickyBroadcast: action=" + intent.getAction());
}
final long ident = Binder.clearCallingIdentity();
if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) {
final IBatteryStats bs = BatteryStatsService.getService();
try {
NetworkInfo ni = intent.getParcelableExtra(
ConnectivityManager.EXTRA_NETWORK_INFO);
bs.noteConnectivityChanged(intent.getIntExtra(
ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE),
ni != null ? ni.getState().toString() : "?");
} catch (RemoteException e) {
}
}
try {
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
}
void systemReady() {
// start network sampling ..
Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED);
intent.setPackage(mContext.getPackageName());
mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext,
SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0);
setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent);
loadGlobalProxy();
synchronized(this) {
mSystemReady = true;
if (mInitialBroadcast != null) {
mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL);
mInitialBroadcast = null;
}
}
// load the global proxy at startup
mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY));
// Try bringing up tracker, but if KeyStore isn't ready yet, wait
// for user to unlock device.
if (!updateLockdownVpn()) {
final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT);
mContext.registerReceiver(mUserPresentReceiver, filter);
}
mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY));
mPermissionMonitor.startMonitoring();
}
private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// Try creating lockdown tracker, since user present usually means
// unlocked keystore.
if (updateLockdownVpn()) {
mContext.unregisterReceiver(this);
}
}
};
/** @hide */
@Override
public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) {
enforceConnectivityInternalPermission();
if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal);
// mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal);
}
/**
* Setup data activity tracking for the given network.
*
* Every {@code setupDataActivityTracking} should be paired with a
* {@link #removeDataActivityTracking} for cleanup.
*/
private void setupDataActivityTracking(NetworkAgentInfo networkAgent) {
final String iface = networkAgent.linkProperties.getInterfaceName();
final int timeout;
int type = ConnectivityManager.TYPE_NONE;
if (networkAgent.networkCapabilities.hasTransport(
NetworkCapabilities.TRANSPORT_CELLULAR)) {
timeout = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE,
5);
type = ConnectivityManager.TYPE_MOBILE;
} else if (networkAgent.networkCapabilities.hasTransport(
NetworkCapabilities.TRANSPORT_WIFI)) {
timeout = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI,
0);
type = ConnectivityManager.TYPE_WIFI;
} else {
// do not track any other networks
timeout = 0;
}
if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) {
try {
mNetd.addIdleTimer(iface, timeout, type);
} catch (Exception e) {
// You shall not crash!
loge("Exception in setupDataActivityTracking " + e);
}
}
}
/**
* Remove data activity tracking when network disconnects.
*/
private void removeDataActivityTracking(NetworkAgentInfo networkAgent) {
final String iface = networkAgent.linkProperties.getInterfaceName();
final NetworkCapabilities caps = networkAgent.networkCapabilities;
if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) ||
caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) {
try {
// the call fails silently if no idletimer setup for this interface
mNetd.removeIdleTimer(iface);
} catch (Exception e) {
loge("Exception in removeDataActivityTracking " + e);
}
}
}
/**
* Reads the network specific MTU size from reources.
* and set it on it's iface.
*/
private void updateMtu(LinkProperties newLp, LinkProperties oldLp) {
final String iface = newLp.getInterfaceName();
final int mtu = newLp.getMtu();
if (oldLp != null && newLp.isIdenticalMtu(oldLp)) {
if (VDBG) log("identical MTU - not setting");
return;
}
if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) {
loge("Unexpected mtu value: " + mtu + ", " + iface);
return;
}
// Cannot set MTU without interface name
if (TextUtils.isEmpty(iface)) {
loge("Setting MTU size with null iface.");
return;
}
try {
if (DBG) log("Setting MTU size: " + iface + ", " + mtu);
mNetd.setMtu(iface, mtu);
} catch (Exception e) {
Slog.e(TAG, "exception in setMtu()" + e);
}
}
private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208";
private void updateTcpBufferSizes(NetworkAgentInfo nai) {
if (isDefaultNetwork(nai) == false) {
return;
}
String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes();
String[] values = null;
if (tcpBufferSizes != null) {
values = tcpBufferSizes.split(",");
}
if (values == null || values.length != 6) {
if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults");
tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES;
values = tcpBufferSizes.split(",");
}
if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return;
try {
if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes);
final String prefix = "/sys/kernel/ipv4/tcp_";
FileUtils.stringToFile(prefix + "rmem_min", values[0]);
FileUtils.stringToFile(prefix + "rmem_def", values[1]);
FileUtils.stringToFile(prefix + "rmem_max", values[2]);
FileUtils.stringToFile(prefix + "wmem_min", values[3]);
FileUtils.stringToFile(prefix + "wmem_def", values[4]);
FileUtils.stringToFile(prefix + "wmem_max", values[5]);
mCurrentTcpBufferSizes = tcpBufferSizes;
} catch (IOException e) {
loge("Can't set TCP buffer sizes:" + e);
}
final String defaultRwndKey = "net.tcp.default_init_rwnd";
int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0);
Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue);
final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd";
if (rwndValue != 0) {
SystemProperties.set(sysctlKey, rwndValue.toString());
}
}
private void flushVmDnsCache() {
/*
* Tell the VMs to toss their DNS caches
*/
Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE);
intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
/*
* Connectivity events can happen before boot has completed ...
*/
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
final long ident = Binder.clearCallingIdentity();
try {
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
public int getRestoreDefaultNetworkDelay(int networkType) {
String restoreDefaultNetworkDelayStr = SystemProperties.get(
NETWORK_RESTORE_DELAY_PROP_NAME);
if(restoreDefaultNetworkDelayStr != null &&
restoreDefaultNetworkDelayStr.length() != 0) {
try {
return Integer.valueOf(restoreDefaultNetworkDelayStr);
} catch (NumberFormatException e) {
}
}
// if the system property isn't set, use the value for the apn type
int ret = RESTORE_DEFAULT_NETWORK_DELAY;
if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) &&
(mNetConfigs[networkType] != null)) {
ret = mNetConfigs[networkType].restoreTime;
}
return ret;
}
@Override
protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " ");
if (mContext.checkCallingOrSelfPermission(
android.Manifest.permission.DUMP)
!= PackageManager.PERMISSION_GRANTED) {
pw.println("Permission Denial: can't dump ConnectivityService " +
"from from pid=" + Binder.getCallingPid() + ", uid=" +
Binder.getCallingUid());
return;
}
pw.println("NetworkFactories for:");
pw.increaseIndent();
for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
pw.println(nfi.name);
}
pw.decreaseIndent();
pw.println();
NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId);
pw.print("Active default network: ");
if (defaultNai == null) {
pw.println("none");
} else {
pw.println(defaultNai.network.netId);
}
pw.println();
pw.println("Current Networks:");
pw.increaseIndent();
for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
pw.println(nai.toString());
pw.increaseIndent();
pw.println("Requests:");
pw.increaseIndent();
for (int i = 0; i < nai.networkRequests.size(); i++) {
pw.println(nai.networkRequests.valueAt(i).toString());
}
pw.decreaseIndent();
pw.println("Lingered:");
pw.increaseIndent();
for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString());
pw.decreaseIndent();
pw.decreaseIndent();
}
pw.decreaseIndent();
pw.println();
pw.println("Network Requests:");
pw.increaseIndent();
for (NetworkRequestInfo nri : mNetworkRequests.values()) {
pw.println(nri.toString());
}
pw.println();
pw.decreaseIndent();
pw.println("mLegacyTypeTracker:");
pw.increaseIndent();
mLegacyTypeTracker.dump(pw);
pw.decreaseIndent();
pw.println();
synchronized (this) {
pw.println("NetworkTransitionWakeLock is currently " +
(mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held.");
pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy);
}
pw.println();
mTethering.dump(fd, pw, args);
if (mInetLog != null) {
pw.println();
pw.println("Inet condition reports:");
pw.increaseIndent();
for(int i = 0; i < mInetLog.size(); i++) {
pw.println(mInetLog.get(i));
}
pw.decreaseIndent();
}
}
private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) {
if (nai.network == null) return false;
final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network);
if (officialNai != null && officialNai.equals(nai)) return true;
if (officialNai != null || VDBG) {
loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai +
" - " + nai);
}
return false;
}
private boolean isRequest(NetworkRequest request) {
return mNetworkRequests.get(request).isRequest;
}
// must be stateless - things change under us.
private class NetworkStateTrackerHandler extends Handler {
public NetworkStateTrackerHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
NetworkInfo info;
switch (msg.what) {
case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: {
handleAsyncChannelHalfConnect(msg);
break;
}
case AsyncChannel.CMD_CHANNEL_DISCONNECT: {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai != null) nai.asyncChannel.disconnect();
break;
}
case AsyncChannel.CMD_CHANNEL_DISCONNECTED: {
handleAsyncChannelDisconnected(msg);
break;
}
case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai == null) {
loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent");
} else {
updateCapabilities(nai, (NetworkCapabilities)msg.obj);
}
break;
}
case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai == null) {
loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED");
} else {
if (VDBG) {
log("Update of LinkProperties for " + nai.name() +
"; created=" + nai.created);
}
LinkProperties oldLp = nai.linkProperties;
synchronized (nai) {
nai.linkProperties = (LinkProperties)msg.obj;
}
if (nai.created) updateLinkProperties(nai, oldLp);
}
break;
}
case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai == null) {
loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent");
break;
}
info = (NetworkInfo) msg.obj;
updateNetworkInfo(nai, info);
break;
}
case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai == null) {
loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent");
break;
}
Integer score = (Integer) msg.obj;
if (score != null) updateNetworkScore(nai, score.intValue());
break;
}
case NetworkAgent.EVENT_UID_RANGES_ADDED: {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai == null) {
loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent");
break;
}
try {
mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj);
} catch (Exception e) {
// Never crash!
loge("Exception in addVpnUidRanges: " + e);
}
break;
}
case NetworkAgent.EVENT_UID_RANGES_REMOVED: {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai == null) {
loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent");
break;
}
try {
mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj);
} catch (Exception e) {
// Never crash!
loge("Exception in removeVpnUidRanges: " + e);
}
break;
}
case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai == null) {
loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent");
break;
}
if (nai.created && !nai.networkMisc.explicitlySelected) {
loge("ERROR: created network explicitly selected.");
}
nai.networkMisc.explicitlySelected = true;
break;
}
case NetworkMonitor.EVENT_NETWORK_TESTED: {
NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj;
if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) {
boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID);
nai.lastValidated = valid;
if (valid) {
if (DBG) log("Validated " + nai.name());
if (!nai.everValidated) {
nai.everValidated = true;
rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED,
ReapUnvalidatedNetworks.REAP);
// If score has changed, rebroadcast to NetworkFactories. b/17726566
sendUpdatedScoreToFactories(nai);
}
}
updateInetCondition(nai);
// Let the NetworkAgent know the state of its network
nai.asyncChannel.sendMessage(
android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS,
(valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK),
0, null);
}
break;
}
case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: {
NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj;
if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) {
handleLingerComplete(nai);
}
break;
}
case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: {
if (msg.arg1 == 0) {
setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null);
} else {
NetworkAgentInfo nai = null;
synchronized (mNetworkForNetId) {
nai = mNetworkForNetId.get(msg.arg2);
}
if (nai == null) {
loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor");
break;
}
setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(),
nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj);
}
break;
}
case NetworkStateTracker.EVENT_STATE_CHANGED: {
info = (NetworkInfo) msg.obj;
NetworkInfo.State state = info.getState();
if (VDBG || (state == NetworkInfo.State.CONNECTED) ||
(state == NetworkInfo.State.DISCONNECTED) ||
(state == NetworkInfo.State.SUSPENDED)) {
log("ConnectivityChange for " +
info.getTypeName() + ": " +
state + "/" + info.getDetailedState());
}
EventLogTags.writeConnectivityStateChanged(
info.getType(), info.getSubtype(), info.getDetailedState().ordinal());
if (info.isConnectedToProvisioningNetwork()) {
/**
* TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING
* for now its an in between network, its a network that
* is actually a default network but we don't want it to be
* announced as such to keep background applications from
* trying to use it. It turns out that some still try so we
* take the additional step of clearing any default routes
* to the link that may have incorrectly setup by the lower
* levels.
*/
LinkProperties lp = getLinkPropertiesForType(info.getType());
if (DBG) {
log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp);
}
// Clear any default routes setup by the radio so
// any activity by applications trying to use this
// connection will fail until the provisioning network
// is enabled.
/*
for (RouteInfo r : lp.getRoutes()) {
removeRoute(lp, r, TO_DEFAULT_TABLE,
mNetTrackers[info.getType()].getNetwork().netId);
}
*/
} else if (state == NetworkInfo.State.DISCONNECTED) {
} else if (state == NetworkInfo.State.SUSPENDED) {
} else if (state == NetworkInfo.State.CONNECTED) {
// handleConnect(info);
}
notifyLockdownVpn(null);
break;
}
case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: {
info = (NetworkInfo) msg.obj;
// TODO: Temporary allowing network configuration
// change not resetting sockets.
// @see bug/4455071
/*
handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()],
false);
*/
break;
}
}
}
}
// Cancel any lingering so the linger timeout doesn't teardown a network.
// This should be called when a network begins satisfying a NetworkRequest.
// Note: depending on what state the NetworkMonitor is in (e.g.,
// if it's awaiting captive portal login, or if validation failed), this
// may trigger a re-evaluation of the network.
private void unlinger(NetworkAgentInfo nai) {
if (VDBG) log("Canceling linger of " + nai.name());
// If network has never been validated, it cannot have been lingered, so don't bother
// needlessly triggering a re-evaluation.
if (!nai.everValidated) return;
nai.networkLingered.clear();
nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED);
}
private void handleAsyncChannelHalfConnect(Message msg) {
AsyncChannel ac = (AsyncChannel) msg.obj;
if (mNetworkFactoryInfos.containsKey(msg.replyTo)) {
if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
if (VDBG) log("NetworkFactory connected");
// A network factory has connected. Send it all current NetworkRequests.
for (NetworkRequestInfo nri : mNetworkRequests.values()) {
if (nri.isRequest == false) continue;
NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId);
ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK,
(nai != null ? nai.getCurrentScore() : 0), 0, nri.request);
}
} else {
loge("Error connecting NetworkFactory");
mNetworkFactoryInfos.remove(msg.obj);
}
} else if (mNetworkAgentInfos.containsKey(msg.replyTo)) {
if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
if (VDBG) log("NetworkAgent connected");
// A network agent has requested a connection. Establish the connection.
mNetworkAgentInfos.get(msg.replyTo).asyncChannel.
sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION);
} else {
loge("Error connecting NetworkAgent");
NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo);
if (nai != null) {
synchronized (mNetworkForNetId) {
mNetworkForNetId.remove(nai.network.netId);
}
// Just in case.
mLegacyTypeTracker.remove(nai);
}
}
}
}
private void handleAsyncChannelDisconnected(Message msg) {
NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo);
if (nai != null) {
if (DBG) {
log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size());
}
// A network agent has disconnected.
if (nai.created) {
// Tell netd to clean up the configuration for this network
// (routing rules, DNS, etc).
try {
mNetd.removeNetwork(nai.network.netId);
} catch (Exception e) {
loge("Exception removing network: " + e);
}
}
// TODO - if we move the logic to the network agent (have them disconnect
// because they lost all their requests or because their score isn't good)
// then they would disconnect organically, report their new state and then
// disconnect the channel.
if (nai.networkInfo.isConnected()) {
nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED,
null, null);
}
if (isDefaultNetwork(nai)) {
mDefaultInetConditionPublished = 0;
}
notifyIfacesChanged();
notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST);
nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED);
mNetworkAgentInfos.remove(msg.replyTo);
updateClat(null, nai.linkProperties, nai);
mLegacyTypeTracker.remove(nai);
synchronized (mNetworkForNetId) {
mNetworkForNetId.remove(nai.network.netId);
}
// Since we've lost the network, go through all the requests that
// it was satisfying and see if any other factory can satisfy them.
// TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests
final ArrayList<NetworkAgentInfo> toActivate = new ArrayList<NetworkAgentInfo>();
for (int i = 0; i < nai.networkRequests.size(); i++) {
NetworkRequest request = nai.networkRequests.valueAt(i);
NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId);
if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) {
if (DBG) {
log("Checking for replacement network to handle request " + request );
}
mNetworkForRequestId.remove(request.requestId);
sendUpdatedScoreToFactories(request, 0);
NetworkAgentInfo alternative = null;
for (NetworkAgentInfo existing : mNetworkAgentInfos.values()) {
if (existing.satisfies(request) &&
(alternative == null ||
alternative.getCurrentScore() < existing.getCurrentScore())) {
alternative = existing;
}
}
if (alternative != null) {
if (DBG) log(" found replacement in " + alternative.name());
if (!toActivate.contains(alternative)) {
toActivate.add(alternative);
}
}
}
}
if (nai.networkRequests.get(mDefaultRequest.requestId) != null) {
removeDataActivityTracking(nai);
notifyLockdownVpn(nai);
requestNetworkTransitionWakelock(nai.name());
}
for (NetworkAgentInfo networkToActivate : toActivate) {
unlinger(networkToActivate);
rematchNetworkAndRequests(networkToActivate, NascentState.NOT_JUST_VALIDATED,
ReapUnvalidatedNetworks.DONT_REAP);
}
}
}
// If this method proves to be too slow then we can maintain a separate
// pendingIntent => NetworkRequestInfo map.
// This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo.
private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) {
Intent intent = pendingIntent.getIntent();
for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) {
PendingIntent existingPendingIntent = entry.getValue().mPendingIntent;
if (existingPendingIntent != null &&
existingPendingIntent.getIntent().filterEquals(intent)) {
return entry.getValue();
}
}
return null;
}
private void handleRegisterNetworkRequestWithIntent(Message msg) {
final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj);
NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent);
if (existingRequest != null) { // remove the existing request.
if (DBG) log("Replacing " + existingRequest.request + " with "
+ nri.request + " because their intents matched.");
handleReleaseNetworkRequest(existingRequest.request, getCallingUid());
}
handleRegisterNetworkRequest(msg);
}
private void handleRegisterNetworkRequest(Message msg) {
final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj);
mNetworkRequests.put(nri.request, nri);
// TODO: This logic may be better replaced with a call to rematchNetworkAndRequests
// Check for the best currently alive network that satisfies this request
NetworkAgentInfo bestNetwork = null;
for (NetworkAgentInfo network : mNetworkAgentInfos.values()) {
if (DBG) log("handleRegisterNetworkRequest checking " + network.name());
if (network.satisfies(nri.request)) {
if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore());
if (!nri.isRequest) {
// Not setting bestNetwork here as a listening NetworkRequest may be
// satisfied by multiple Networks. Instead the request is added to
// each satisfying Network and notified about each.
network.addRequest(nri.request);
notifyNetworkCallback(network, nri);
} else if (bestNetwork == null ||
bestNetwork.getCurrentScore() < network.getCurrentScore()) {
bestNetwork = network;
}
}
}
if (bestNetwork != null) {
if (DBG) log("using " + bestNetwork.name());
unlinger(bestNetwork);
bestNetwork.addRequest(nri.request);
mNetworkForRequestId.put(nri.request.requestId, bestNetwork);
notifyNetworkCallback(bestNetwork, nri);
if (nri.request.legacyType != TYPE_NONE) {
mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork);
}
}
if (nri.isRequest) {
if (DBG) log("sending new NetworkRequest to factories");
final int score = bestNetwork == null ? 0 : bestNetwork.getCurrentScore();
for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score,
0, nri.request);
}
}
}
private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent,
int callingUid) {
NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent);
if (nri != null) {
handleReleaseNetworkRequest(nri.request, callingUid);
}
}
// Is nai unneeded by all NetworkRequests (and should be disconnected)?
// For validated Networks this is simply whether it is satsifying any NetworkRequests.
// For unvalidated Networks this is whether it is satsifying any NetworkRequests or
// were it to become validated, would it have a chance of satisfying any NetworkRequests.
private boolean unneeded(NetworkAgentInfo nai) {
if (!nai.created || nai.isVPN()) return false;
boolean unneeded = true;
if (nai.everValidated) {
for (int i = 0; i < nai.networkRequests.size() && unneeded; i++) {
final NetworkRequest nr = nai.networkRequests.valueAt(i);
try {
if (isRequest(nr)) unneeded = false;
} catch (Exception e) {
loge("Request " + nr + " not found in mNetworkRequests.");
loge(" it came from request list of " + nai.name());
}
}
} else {
for (NetworkRequestInfo nri : mNetworkRequests.values()) {
// If this Network is already the highest scoring Network for a request, or if
// there is hope for it to become one if it validated, then it is needed.
if (nri.isRequest && nai.satisfies(nri.request) &&
(nai.networkRequests.get(nri.request.requestId) != null ||
// Note that this catches two important cases:
// 1. Unvalidated cellular will not be reaped when unvalidated WiFi
// is currently satisfying the request. This is desirable when
// cellular ends up validating but WiFi does not.
// 2. Unvalidated WiFi will not be reaped when validated cellular
// is currently satsifying the request. This is desirable when
// WiFi ends up validating and out scoring cellular.
mNetworkForRequestId.get(nri.request.requestId).getCurrentScore() <
nai.getCurrentScoreAsValidated())) {
unneeded = false;
break;
}
}
}
return unneeded;
}
private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) {
NetworkRequestInfo nri = mNetworkRequests.get(request);
if (nri != null) {
if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) {
if (DBG) log("Attempt to release unowned NetworkRequest " + request);
return;
}
if (DBG) log("releasing NetworkRequest " + request);
nri.unlinkDeathRecipient();
mNetworkRequests.remove(request);
if (nri.isRequest) {
// Find all networks that are satisfying this request and remove the request
// from their request lists.
// TODO - it's my understanding that for a request there is only a single
// network satisfying it, so this loop is wasteful
boolean wasKept = false;
for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
if (nai.networkRequests.get(nri.request.requestId) != null) {
nai.networkRequests.remove(nri.request.requestId);
if (DBG) {
log(" Removing from current network " + nai.name() +
", leaving " + nai.networkRequests.size() +
" requests.");
}
if (unneeded(nai)) {
if (DBG) log("no live requests for " + nai.name() + "; disconnecting");
teardownUnneededNetwork(nai);
} else {
// suspect there should only be one pass through here
// but if any were kept do the check below
wasKept |= true;
}
}
}
NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId);
if (nai != null) {
mNetworkForRequestId.remove(nri.request.requestId);
}
// Maintain the illusion. When this request arrived, we might have pretended
// that a network connected to serve it, even though the network was already
// connected. Now that this request has gone away, we might have to pretend
// that the network disconnected. LegacyTypeTracker will generate that
// phantom disconnect for this type.
if (nri.request.legacyType != TYPE_NONE && nai != null) {
boolean doRemove = true;
if (wasKept) {
// check if any of the remaining requests for this network are for the
// same legacy type - if so, don't remove the nai
for (int i = 0; i < nai.networkRequests.size(); i++) {
NetworkRequest otherRequest = nai.networkRequests.valueAt(i);
if (otherRequest.legacyType == nri.request.legacyType &&
isRequest(otherRequest)) {
if (DBG) log(" still have other legacy request - leaving");
doRemove = false;
}
}
}
if (doRemove) {
mLegacyTypeTracker.remove(nri.request.legacyType, nai);
}
}
for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST,
nri.request);
}
} else {
// listens don't have a singular affectedNetwork. Check all networks to see
// if this listen request applies and remove it.
for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
nai.networkRequests.remove(nri.request.requestId);
}
}
callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED);
}
}
private class InternalHandler extends Handler {
public InternalHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK:
case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: {
String causedBy = null;
synchronized (ConnectivityService.this) {
if (msg.arg1 == mNetTransitionWakeLockSerialNumber &&
mNetTransitionWakeLock.isHeld()) {
mNetTransitionWakeLock.release();
causedBy = mNetTransitionWakeLockCausedBy;
} else {
break;
}
}
if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) {
log("Failed to find a new network - expiring NetTransition Wakelock");
} else {
log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) +
" cleared because we found a replacement network");
}
break;
}
case EVENT_APPLY_GLOBAL_HTTP_PROXY: {
handleDeprecatedGlobalHttpProxy();
break;
}
case EVENT_SET_DEPENDENCY_MET: {
boolean met = (msg.arg1 == ENABLED);
handleSetDependencyMet(msg.arg2, met);
break;
}
case EVENT_SEND_STICKY_BROADCAST_INTENT: {
Intent intent = (Intent)msg.obj;
sendStickyBroadcast(intent);
break;
}
case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: {
int tag = mEnableFailFastMobileDataTag.get();
if (msg.arg1 == tag) {
MobileDataStateTracker mobileDst =
(MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE];
if (mobileDst != null) {
mobileDst.setEnableFailFastMobileData(msg.arg2);
}
} else {
log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1
+ " != tag:" + tag);
}
break;
}
case EVENT_SAMPLE_INTERVAL_ELAPSED: {
handleNetworkSamplingTimeout();
break;
}
case EVENT_PROXY_HAS_CHANGED: {
handleApplyDefaultProxy((ProxyInfo)msg.obj);
break;
}
case EVENT_REGISTER_NETWORK_FACTORY: {
handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj);
break;
}
case EVENT_UNREGISTER_NETWORK_FACTORY: {
handleUnregisterNetworkFactory((Messenger)msg.obj);
break;
}
case EVENT_REGISTER_NETWORK_AGENT: {
handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj);
break;
}
case EVENT_REGISTER_NETWORK_REQUEST:
case EVENT_REGISTER_NETWORK_LISTENER: {
handleRegisterNetworkRequest(msg);
break;
}
case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: {
handleRegisterNetworkRequestWithIntent(msg);
break;
}
case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: {
handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1);
break;
}
case EVENT_RELEASE_NETWORK_REQUEST: {
handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1);
break;
}
case EVENT_SYSTEM_READY: {
for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
nai.networkMonitor.systemReady = true;
}
break;
}
}
}
}
// javadoc from interface
public int tether(String iface) {
ConnectivityManager.enforceTetherChangePermission(mContext);
if (isTetheringSupported()) {
return mTethering.tether(iface);
} else {
return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
}
}
// javadoc from interface
public int untether(String iface) {
ConnectivityManager.enforceTetherChangePermission(mContext);
if (isTetheringSupported()) {
return mTethering.untether(iface);
} else {
return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
}
}
// javadoc from interface
public int getLastTetherError(String iface) {
enforceTetherAccessPermission();
if (isTetheringSupported()) {
return mTethering.getLastTetherError(iface);
} else {
return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
}
}
// TODO - proper iface API for selection by property, inspection, etc
public String[] getTetherableUsbRegexs() {
enforceTetherAccessPermission();
if (isTetheringSupported()) {
return mTethering.getTetherableUsbRegexs();
} else {
return new String[0];
}
}
public String[] getTetherableWifiRegexs() {
enforceTetherAccessPermission();
if (isTetheringSupported()) {
return mTethering.getTetherableWifiRegexs();
} else {
return new String[0];
}
}
public String[] getTetherableBluetoothRegexs() {
enforceTetherAccessPermission();
if (isTetheringSupported()) {
return mTethering.getTetherableBluetoothRegexs();
} else {
return new String[0];
}
}
public int setUsbTethering(boolean enable) {
ConnectivityManager.enforceTetherChangePermission(mContext);
if (isTetheringSupported()) {
return mTethering.setUsbTethering(enable);
} else {
return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
}
}
// TODO - move iface listing, queries, etc to new module
// javadoc from interface
public String[] getTetherableIfaces() {
enforceTetherAccessPermission();
return mTethering.getTetherableIfaces();
}
public String[] getTetheredIfaces() {
enforceTetherAccessPermission();
return mTethering.getTetheredIfaces();
}
public String[] getTetheringErroredIfaces() {
enforceTetherAccessPermission();
return mTethering.getErroredIfaces();
}
public String[] getTetheredDhcpRanges() {
enforceConnectivityInternalPermission();
return mTethering.getTetheredDhcpRanges();
}
// if ro.tether.denied = true we default to no tethering
// gservices could set the secure setting to 1 though to enable it on a build where it
// had previously been turned off.
public boolean isTetheringSupported() {
enforceTetherAccessPermission();
int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1);
boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.TETHER_SUPPORTED, defaultVal) != 0)
&& !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING);
return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 ||
mTethering.getTetherableWifiRegexs().length != 0 ||
mTethering.getTetherableBluetoothRegexs().length != 0) &&
mTethering.getUpstreamIfaceTypes().length != 0);
}
// Called when we lose the default network and have no replacement yet.
// This will automatically be cleared after X seconds or a new default network
// becomes CONNECTED, whichever happens first. The timer is started by the
// first caller and not restarted by subsequent callers.
private void requestNetworkTransitionWakelock(String forWhom) {
int serialNum = 0;
synchronized (this) {
if (mNetTransitionWakeLock.isHeld()) return;
serialNum = ++mNetTransitionWakeLockSerialNumber;
mNetTransitionWakeLock.acquire();
mNetTransitionWakeLockCausedBy = forWhom;
}
mHandler.sendMessageDelayed(mHandler.obtainMessage(
EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0),
mNetTransitionWakeLockTimeout);
return;
}
// 100 percent is full good, 0 is full bad.
public void reportInetCondition(int networkType, int percentage) {
NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType);
if (nai == null) return;
boolean isGood = percentage > 50;
// Revalidate if the app report does not match our current validated state.
if (isGood != nai.lastValidated) {
// Make the message logged by reportBadNetwork below less confusing.
if (DBG && isGood) log("reportInetCondition: type=" + networkType + " ok, revalidate");
reportBadNetwork(nai.network);
}
}
public void reportBadNetwork(Network network) {
enforceAccessPermission();
enforceInternetPermission();
if (network == null) return;
final int uid = Binder.getCallingUid();
NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network);
if (nai == null) return;
if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid);
synchronized (nai) {
// Validating an uncreated network could result in a call to rematchNetworkAndRequests()
// which isn't meant to work on uncreated networks.
if (!nai.created) return;
if (isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid)) return;
nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid);
}
}
public ProxyInfo getDefaultProxy() {
// this information is already available as a world read/writable jvm property
// so this API change wouldn't have a benifit. It also breaks the passing
// of proxy info to all the JVMs.
// enforceAccessPermission();
synchronized (mProxyLock) {
ProxyInfo ret = mGlobalProxy;
if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy;
return ret;
}
}
// Convert empty ProxyInfo's to null as null-checks are used to determine if proxies are present
// (e.g. if mGlobalProxy==null fall back to network-specific proxy, if network-specific
// proxy is null then there is no proxy in place).
private ProxyInfo canonicalizeProxyInfo(ProxyInfo proxy) {
if (proxy != null && TextUtils.isEmpty(proxy.getHost())
&& (proxy.getPacFileUrl() == null || Uri.EMPTY.equals(proxy.getPacFileUrl()))) {
proxy = null;
}
return proxy;
}
// ProxyInfo equality function with a couple modifications over ProxyInfo.equals() to make it
// better for determining if a new proxy broadcast is necessary:
// 1. Canonicalize empty ProxyInfos to null so an empty proxy compares equal to null so as to
// avoid unnecessary broadcasts.
// 2. Make sure all parts of the ProxyInfo's compare true, including the host when a PAC URL
// is in place. This is important so legacy PAC resolver (see com.android.proxyhandler)
// changes aren't missed. The legacy PAC resolver pretends to be a simple HTTP proxy but
// actually uses the PAC to resolve; this results in ProxyInfo's with PAC URL, host and port
// all set.
private boolean proxyInfoEqual(ProxyInfo a, ProxyInfo b) {
a = canonicalizeProxyInfo(a);
b = canonicalizeProxyInfo(b);
// ProxyInfo.equals() doesn't check hosts when PAC URLs are present, but we need to check
// hosts even when PAC URLs are present to account for the legacy PAC resolver.
return Objects.equals(a, b) && (a == null || Objects.equals(a.getHost(), b.getHost()));
}
public void setGlobalProxy(ProxyInfo proxyProperties) {
enforceConnectivityInternalPermission();
synchronized (mProxyLock) {
if (proxyProperties == mGlobalProxy) return;
if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return;
if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return;
String host = "";
int port = 0;
String exclList = "";
String pacFileUrl = "";
if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) ||
!Uri.EMPTY.equals(proxyProperties.getPacFileUrl()))) {
if (!proxyProperties.isValid()) {
if (DBG)
log("Invalid proxy properties, ignoring: " + proxyProperties.toString());
return;
}
mGlobalProxy = new ProxyInfo(proxyProperties);
host = mGlobalProxy.getHost();
port = mGlobalProxy.getPort();
exclList = mGlobalProxy.getExclusionListAsString();
if (!Uri.EMPTY.equals(proxyProperties.getPacFileUrl())) {
pacFileUrl = proxyProperties.getPacFileUrl().toString();
}
} else {
mGlobalProxy = null;
}
ContentResolver res = mContext.getContentResolver();
final long token = Binder.clearCallingIdentity();
try {
Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host);
Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port);
Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST,
exclList);
Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl);
} finally {
Binder.restoreCallingIdentity(token);
}
if (mGlobalProxy == null) {
proxyProperties = mDefaultProxy;
}
sendProxyBroadcast(proxyProperties);
}
}
private void loadGlobalProxy() {
ContentResolver res = mContext.getContentResolver();
String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST);
int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0);
String exclList = Settings.Global.getString(res,
Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST);
String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC);
if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) {
ProxyInfo proxyProperties;
if (!TextUtils.isEmpty(pacFileUrl)) {
proxyProperties = new ProxyInfo(pacFileUrl);
} else {
proxyProperties = new ProxyInfo(host, port, exclList);
}
if (!proxyProperties.isValid()) {
if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString());
return;
}
synchronized (mProxyLock) {
mGlobalProxy = proxyProperties;
}
}
}
public ProxyInfo getGlobalProxy() {
// this information is already available as a world read/writable jvm property
// so this API change wouldn't have a benifit. It also breaks the passing
// of proxy info to all the JVMs.
// enforceAccessPermission();
synchronized (mProxyLock) {
return mGlobalProxy;
}
}
private void handleApplyDefaultProxy(ProxyInfo proxy) {
if (proxy != null && TextUtils.isEmpty(proxy.getHost())
&& Uri.EMPTY.equals(proxy.getPacFileUrl())) {
proxy = null;
}
synchronized (mProxyLock) {
if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return;
if (mDefaultProxy == proxy) return; // catches repeated nulls
if (proxy != null && !proxy.isValid()) {
if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString());
return;
}
// This call could be coming from the PacManager, containing the port of the local
// proxy. If this new proxy matches the global proxy then copy this proxy to the
// global (to get the correct local port), and send a broadcast.
// TODO: Switch PacManager to have its own message to send back rather than
// reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy.
if ((mGlobalProxy != null) && (proxy != null)
&& (!Uri.EMPTY.equals(proxy.getPacFileUrl()))
&& proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) {
mGlobalProxy = proxy;
sendProxyBroadcast(mGlobalProxy);
return;
}
mDefaultProxy = proxy;
if (mGlobalProxy != null) return;
if (!mDefaultProxyDisabled) {
sendProxyBroadcast(proxy);
}
}
}
// If the proxy has changed from oldLp to newLp, resend proxy broadcast with default proxy.
// This method gets called when any network changes proxy, but the broadcast only ever contains
// the default proxy (even if it hasn't changed).
// TODO: Deprecate the broadcast extras as they aren't necessarily applicable in a multi-network
// world where an app might be bound to a non-default network.
private void updateProxy(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) {
ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy();
ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy();
if (!proxyInfoEqual(newProxyInfo, oldProxyInfo)) {
sendProxyBroadcast(getDefaultProxy());
}
}
private void handleDeprecatedGlobalHttpProxy() {
String proxy = Settings.Global.getString(mContext.getContentResolver(),
Settings.Global.HTTP_PROXY);
if (!TextUtils.isEmpty(proxy)) {
String data[] = proxy.split(":");
if (data.length == 0) {
return;
}
String proxyHost = data[0];
int proxyPort = 8080;
if (data.length > 1) {
try {
proxyPort = Integer.parseInt(data[1]);
} catch (NumberFormatException e) {
return;
}
}
ProxyInfo p = new ProxyInfo(data[0], proxyPort, "");
setGlobalProxy(p);
}
}
private void sendProxyBroadcast(ProxyInfo proxy) {
if (proxy == null) proxy = new ProxyInfo("", 0, "");
if (mPacManager.setCurrentProxyScriptUrl(proxy)) return;
if (DBG) log("sending Proxy Broadcast for " + proxy);
Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION);
intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING |
Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy);
final long ident = Binder.clearCallingIdentity();
try {
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private static class SettingsObserver extends ContentObserver {
private int mWhat;
private Handler mHandler;
SettingsObserver(Handler handler, int what) {
super(handler);
mHandler = handler;
mWhat = what;
}
void observe(Context context) {
ContentResolver resolver = context.getContentResolver();
resolver.registerContentObserver(Settings.Global.getUriFor(
Settings.Global.HTTP_PROXY), false, this);
}
@Override
public void onChange(boolean selfChange) {
mHandler.obtainMessage(mWhat).sendToTarget();
}
}
private static void log(String s) {
Slog.d(TAG, s);
}
private static void loge(String s) {
Slog.e(TAG, s);
}
private static <T> T checkNotNull(T value, String message) {
if (value == null) {
throw new NullPointerException(message);
}
return value;
}
/**
* Prepare for a VPN application.
* Permissions are checked in Vpn class.
* @hide
*/
@Override
public boolean prepareVpn(String oldPackage, String newPackage) {
throwIfLockdownEnabled();
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized(mVpns) {
return mVpns.get(user).prepare(oldPackage, newPackage);
}
}
/**
* Set whether the current VPN package has the ability to launch VPNs without
* user intervention. This method is used by system-privileged apps.
* Permissions are checked in Vpn class.
* @hide
*/
@Override
public void setVpnPackageAuthorization(boolean authorized) {
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized(mVpns) {
mVpns.get(user).setPackageAuthorization(authorized);
}
}
/**
* Configure a TUN interface and return its file descriptor. Parameters
* are encoded and opaque to this class. This method is used by VpnBuilder
* and not available in ConnectivityManager. Permissions are checked in
* Vpn class.
* @hide
*/
@Override
public ParcelFileDescriptor establishVpn(VpnConfig config) {
throwIfLockdownEnabled();
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized(mVpns) {
return mVpns.get(user).establish(config);
}
}
/**
* Start legacy VPN, controlling native daemons as needed. Creates a
* secondary thread to perform connection work, returning quickly.
*/
@Override
public void startLegacyVpn(VpnProfile profile) {
throwIfLockdownEnabled();
final LinkProperties egress = getActiveLinkProperties();
if (egress == null) {
throw new IllegalStateException("Missing active network connection");
}
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized(mVpns) {
mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress);
}
}
/**
* Return the information of the ongoing legacy VPN. This method is used
* by VpnSettings and not available in ConnectivityManager. Permissions
* are checked in Vpn class.
* @hide
*/
@Override
public LegacyVpnInfo getLegacyVpnInfo() {
throwIfLockdownEnabled();
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized(mVpns) {
return mVpns.get(user).getLegacyVpnInfo();
}
}
/**
* Returns the information of the ongoing VPN. This method is used by VpnDialogs and
* not available in ConnectivityManager.
* Permissions are checked in Vpn class.
* @hide
*/
@Override
public VpnConfig getVpnConfig() {
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized(mVpns) {
return mVpns.get(user).getVpnConfig();
}
}
@Override
public boolean updateLockdownVpn() {
if (Binder.getCallingUid() != Process.SYSTEM_UID) {
Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM");
return false;
}
// Tear down existing lockdown if profile was removed
mLockdownEnabled = LockdownVpnTracker.isEnabled();
if (mLockdownEnabled) {
if (!mKeyStore.isUnlocked()) {
Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker");
return false;
}
final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN));
final VpnProfile profile = VpnProfile.decode(
profileName, mKeyStore.get(Credentials.VPN + profileName));
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized(mVpns) {
setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user),
profile));
}
} else {
setLockdownTracker(null);
}
return true;
}
/**
* Internally set new {@link LockdownVpnTracker}, shutting down any existing
* {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown.
*/
private void setLockdownTracker(LockdownVpnTracker tracker) {
// Shutdown any existing tracker
final LockdownVpnTracker existing = mLockdownTracker;
mLockdownTracker = null;
if (existing != null) {
existing.shutdown();
}
try {
if (tracker != null) {
mNetd.setFirewallEnabled(true);
mNetd.setFirewallInterfaceRule("lo", true);
mLockdownTracker = tracker;
mLockdownTracker.init();
} else {
mNetd.setFirewallEnabled(false);
}
} catch (RemoteException e) {
// ignored; NMS lives inside system_server
}
}
private void throwIfLockdownEnabled() {
if (mLockdownEnabled) {
throw new IllegalStateException("Unavailable in lockdown mode");
}
}
public void supplyMessenger(int networkType, Messenger messenger) {
enforceConnectivityInternalPermission();
if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) {
mNetTrackers[networkType].supplyMessenger(messenger);
}
}
public int findConnectionTypeForIface(String iface) {
enforceConnectivityInternalPermission();
if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE;
synchronized(mNetworkForNetId) {
for (int i = 0; i < mNetworkForNetId.size(); i++) {
NetworkAgentInfo nai = mNetworkForNetId.valueAt(i);
LinkProperties lp = nai.linkProperties;
if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) {
return nai.networkInfo.getType();
}
}
}
return ConnectivityManager.TYPE_NONE;
}
/**
* Have mobile data fail fast if enabled.
*
* @param enabled DctConstants.ENABLED/DISABLED
*/
private void setEnableFailFastMobileData(int enabled) {
int tag;
if (enabled == DctConstants.ENABLED) {
tag = mEnableFailFastMobileDataTag.incrementAndGet();
} else {
tag = mEnableFailFastMobileDataTag.get();
}
mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag,
enabled));
}
@Override
public int checkMobileProvisioning(int suggestedTimeOutMs) {
// TODO: Remove? Any reason to trigger a provisioning check?
return -1;
}
private static final String NOTIFICATION_ID = "CaptivePortal.Notification";
private volatile boolean mIsNotificationVisible = false;
private void setProvNotificationVisible(boolean visible, int networkType, String action) {
if (DBG) {
log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType
+ " action=" + action);
}
Intent intent = new Intent(action);
PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0);
// Concatenate the range of types onto the range of NetIDs.
int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE);
setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent);
}
/**
* Show or hide network provisioning notificaitons.
*
* @param id an identifier that uniquely identifies this notification. This must match
* between show and hide calls. We use the NetID value but for legacy callers
* we concatenate the range of types with the range of NetIDs.
*/
private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType,
String extraInfo, PendingIntent intent) {
if (DBG) {
log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" +
networkType + " extraInfo=" + extraInfo);
}
Resources r = Resources.getSystem();
NotificationManager notificationManager = (NotificationManager) mContext
.getSystemService(Context.NOTIFICATION_SERVICE);
if (visible) {
CharSequence title;
CharSequence details;
int icon;
Notification notification = new Notification();
switch (networkType) {
case ConnectivityManager.TYPE_WIFI:
title = r.getString(R.string.wifi_available_sign_in, 0);
details = r.getString(R.string.network_available_sign_in_detailed,
extraInfo);
icon = R.drawable.stat_notify_wifi_in_range;
break;
case ConnectivityManager.TYPE_MOBILE:
case ConnectivityManager.TYPE_MOBILE_HIPRI:
title = r.getString(R.string.network_available_sign_in, 0);
// TODO: Change this to pull from NetworkInfo once a printable
// name has been added to it
details = mTelephonyManager.getNetworkOperatorName();
icon = R.drawable.stat_notify_rssi_in_range;
break;
default:
title = r.getString(R.string.network_available_sign_in, 0);
details = r.getString(R.string.network_available_sign_in_detailed,
extraInfo);
icon = R.drawable.stat_notify_rssi_in_range;
break;
}
notification.when = 0;
notification.icon = icon;
notification.flags = Notification.FLAG_AUTO_CANCEL;
notification.tickerText = title;
notification.color = mContext.getResources().getColor(
com.android.internal.R.color.system_notification_accent_color);
notification.setLatestEventInfo(mContext, title, details, notification.contentIntent);
notification.contentIntent = intent;
try {
notificationManager.notify(NOTIFICATION_ID, id, notification);
} catch (NullPointerException npe) {
loge("setNotificaitionVisible: visible notificationManager npe=" + npe);
npe.printStackTrace();
}
} else {
try {
notificationManager.cancel(NOTIFICATION_ID, id);
} catch (NullPointerException npe) {
loge("setNotificaitionVisible: cancel notificationManager npe=" + npe);
npe.printStackTrace();
}
}
mIsNotificationVisible = visible;
}
/** Location to an updatable file listing carrier provisioning urls.
* An example:
*
* <?xml version="1.0" encoding="utf-8"?>
* <provisioningUrls>
* <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl>
* <redirectedUrl mcc="310" mnc="4">http://www.google.com</redirectedUrl>
* </provisioningUrls>
*/
private static final String PROVISIONING_URL_PATH =
"/data/misc/radio/provisioning_urls.xml";
private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH);
/** XML tag for root element. */
private static final String TAG_PROVISIONING_URLS = "provisioningUrls";
/** XML tag for individual url */
private static final String TAG_PROVISIONING_URL = "provisioningUrl";
/** XML tag for redirected url */
private static final String TAG_REDIRECTED_URL = "redirectedUrl";
/** XML attribute for mcc */
private static final String ATTR_MCC = "mcc";
/** XML attribute for mnc */
private static final String ATTR_MNC = "mnc";
private static final int REDIRECTED_PROVISIONING = 1;
private static final int PROVISIONING = 2;
private String getProvisioningUrlBaseFromFile(int type) {
FileReader fileReader = null;
XmlPullParser parser = null;
Configuration config = mContext.getResources().getConfiguration();
String tagType;
switch (type) {
case PROVISIONING:
tagType = TAG_PROVISIONING_URL;
break;
case REDIRECTED_PROVISIONING:
tagType = TAG_REDIRECTED_URL;
break;
default:
throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " +
type);
}
try {
fileReader = new FileReader(mProvisioningUrlFile);
parser = Xml.newPullParser();
parser.setInput(fileReader);
XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS);
while (true) {
XmlUtils.nextElement(parser);
String element = parser.getName();
if (element == null) break;
if (element.equals(tagType)) {
String mcc = parser.getAttributeValue(null, ATTR_MCC);
try {
if (mcc != null && Integer.parseInt(mcc) == config.mcc) {
String mnc = parser.getAttributeValue(null, ATTR_MNC);
if (mnc != null && Integer.parseInt(mnc) == config.mnc) {
parser.next();
if (parser.getEventType() == XmlPullParser.TEXT) {
return parser.getText();
}
}
}
} catch (NumberFormatException e) {
loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e);
}
}
}
return null;
} catch (FileNotFoundException e) {
loge("Carrier Provisioning Urls file not found");
} catch (XmlPullParserException e) {
loge("Xml parser exception reading Carrier Provisioning Urls file: " + e);
} catch (IOException e) {
loge("I/O exception reading Carrier Provisioning Urls file: " + e);
} finally {
if (fileReader != null) {
try {
fileReader.close();
} catch (IOException e) {}
}
}
return null;
}
@Override
public String getMobileRedirectedProvisioningUrl() {
enforceConnectivityInternalPermission();
String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING);
if (TextUtils.isEmpty(url)) {
url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url);
}
return url;
}
@Override
public String getMobileProvisioningUrl() {
enforceConnectivityInternalPermission();
String url = getProvisioningUrlBaseFromFile(PROVISIONING);
if (TextUtils.isEmpty(url)) {
url = mContext.getResources().getString(R.string.mobile_provisioning_url);
log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url);
} else {
log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url);
}
// populate the iccid, imei and phone number in the provisioning url.
if (!TextUtils.isEmpty(url)) {
String phoneNumber = mTelephonyManager.getLine1Number();
if (TextUtils.isEmpty(phoneNumber)) {
phoneNumber = "0000000000";
}
url = String.format(url,
mTelephonyManager.getSimSerialNumber() /* ICCID */,
mTelephonyManager.getDeviceId() /* IMEI */,
phoneNumber /* Phone numer */);
}
return url;
}
@Override
public void setProvisioningNotificationVisible(boolean visible, int networkType,
String action) {
enforceConnectivityInternalPermission();
final long ident = Binder.clearCallingIdentity();
try {
setProvNotificationVisible(visible, networkType, action);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
@Override
public void setAirplaneMode(boolean enable) {
enforceConnectivityInternalPermission();
final long ident = Binder.clearCallingIdentity();
try {
final ContentResolver cr = mContext.getContentResolver();
Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0);
Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED);
intent.putExtra("state", enable);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
private void onUserStart(int userId) {
synchronized(mVpns) {
Vpn userVpn = mVpns.get(userId);
if (userVpn != null) {
loge("Starting user already has a VPN");
return;
}
userVpn = new Vpn(mHandler.getLooper(), mContext, mNetd, this, userId);
mVpns.put(userId, userVpn);
}
}
private void onUserStop(int userId) {
synchronized(mVpns) {
Vpn userVpn = mVpns.get(userId);
if (userVpn == null) {
loge("Stopping user has no VPN");
return;
}
mVpns.delete(userId);
}
}
private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL);
if (userId == UserHandle.USER_NULL) return;
if (Intent.ACTION_USER_STARTING.equals(action)) {
onUserStart(userId);
} else if (Intent.ACTION_USER_STOPPING.equals(action)) {
onUserStop(userId);
}
}
};
/* Infrastructure for network sampling */
private void handleNetworkSamplingTimeout() {
if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics ..");
// initialize list of interfaces ..
Map<String, SamplingDataTracker.SamplingSnapshot> mapIfaceToSample =
new HashMap<String, SamplingDataTracker.SamplingSnapshot>();
for (NetworkStateTracker tracker : mNetTrackers) {
if (tracker != null) {
String ifaceName = tracker.getNetworkInterfaceName();
if (ifaceName != null) {
mapIfaceToSample.put(ifaceName, null);
}
}
}
// Read samples for all interfaces
SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample);
// process samples for all networks
for (NetworkStateTracker tracker : mNetTrackers) {
if (tracker != null) {
String ifaceName = tracker.getNetworkInterfaceName();
SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName);
if (ss != null) {
// end the previous sampling cycle
tracker.stopSampling(ss);
// start a new sampling cycle ..
tracker.startSampling(ss);
}
}
}
if (SAMPLE_DBG) log("Done.");
int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS,
DEFAULT_SAMPLING_INTERVAL_IN_SECONDS);
if (SAMPLE_DBG) {
log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds");
}
setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent);
}
/**
* Sets a network sampling alarm.
*/
void setAlarm(int timeoutInMilliseconds, PendingIntent intent) {
long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds;
int alarmType;
if (Resources.getSystem().getBoolean(
R.bool.config_networkSamplingWakesDevice)) {
alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP;
} else {
alarmType = AlarmManager.ELAPSED_REALTIME;
}
mAlarmManager.set(alarmType, wakeupTime, intent);
}
private final HashMap<Messenger, NetworkFactoryInfo> mNetworkFactoryInfos =
new HashMap<Messenger, NetworkFactoryInfo>();
private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests =
new HashMap<NetworkRequest, NetworkRequestInfo>();
private static class NetworkFactoryInfo {
public final String name;
public final Messenger messenger;
public final AsyncChannel asyncChannel;
public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) {
this.name = name;
this.messenger = messenger;
this.asyncChannel = asyncChannel;
}
}
/**
* Tracks info about the requester.
* Also used to notice when the calling process dies so we can self-expire
*/
private class NetworkRequestInfo implements IBinder.DeathRecipient {
static final boolean REQUEST = true;
static final boolean LISTEN = false;
final NetworkRequest request;
final PendingIntent mPendingIntent;
boolean mPendingIntentSent;
private final IBinder mBinder;
final int mPid;
final int mUid;
final Messenger messenger;
final boolean isRequest;
NetworkRequestInfo(NetworkRequest r, PendingIntent pi, boolean isRequest) {
request = r;
mPendingIntent = pi;
messenger = null;
mBinder = null;
mPid = getCallingPid();
mUid = getCallingUid();
this.isRequest = isRequest;
}
NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) {
super();
messenger = m;
request = r;
mBinder = binder;
mPid = getCallingPid();
mUid = getCallingUid();
this.isRequest = isRequest;
mPendingIntent = null;
try {
mBinder.linkToDeath(this, 0);
} catch (RemoteException e) {
binderDied();
}
}
void unlinkDeathRecipient() {
if (mBinder != null) {
mBinder.unlinkToDeath(this, 0);
}
}
public void binderDied() {
log("ConnectivityService NetworkRequestInfo binderDied(" +
request + ", " + mBinder + ")");
releaseNetworkRequest(request);
}
public String toString() {
return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" +
mPid + " for " + request +
(mPendingIntent == null ? "" : " to trigger " + mPendingIntent);
}
}
@Override
public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities,
Messenger messenger, int timeoutMs, IBinder binder, int legacyType) {
networkCapabilities = new NetworkCapabilities(networkCapabilities);
enforceNetworkRequestPermissions(networkCapabilities);
enforceMeteredApnPolicy(networkCapabilities);
if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) {
throw new IllegalArgumentException("Bad timeout specified");
}
NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType,
nextNetworkRequestId());
if (DBG) log("requestNetwork for " + networkRequest);
NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder,
NetworkRequestInfo.REQUEST);
mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri));
if (timeoutMs > 0) {
mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST,
nri), timeoutMs);
}
return networkRequest;
}
private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) {
if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
== false) {
enforceConnectivityInternalPermission();
} else {
enforceChangePermission();
}
}
private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) {
// if UID is restricted, don't allow them to bring up metered APNs
if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED)
== false) {
final int uidRules;
final int uid = Binder.getCallingUid();
synchronized(mRulesLock) {
uidRules = mUidRules.get(uid, RULE_ALLOW_ALL);
}
if ((uidRules & RULE_REJECT_METERED) != 0) {
// we could silently fail or we can filter the available nets to only give
// them those they have access to. Chose the more useful
networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
}
}
}
@Override
public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities,
PendingIntent operation) {
checkNotNull(operation, "PendingIntent cannot be null.");
networkCapabilities = new NetworkCapabilities(networkCapabilities);
enforceNetworkRequestPermissions(networkCapabilities);
enforceMeteredApnPolicy(networkCapabilities);
NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE,
nextNetworkRequestId());
if (DBG) log("pendingRequest for " + networkRequest + " to trigger " + operation);
NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation,
NetworkRequestInfo.REQUEST);
mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT,
nri));
return networkRequest;
}
private void releasePendingNetworkRequestWithDelay(PendingIntent operation) {
mHandler.sendMessageDelayed(
mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT,
getCallingUid(), 0, operation), mReleasePendingIntentDelayMs);
}
@Override
public void releasePendingNetworkRequest(PendingIntent operation) {
mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT,
getCallingUid(), 0, operation));
}
@Override
public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities,
Messenger messenger, IBinder binder) {
enforceAccessPermission();
NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities(
networkCapabilities), TYPE_NONE, nextNetworkRequestId());
if (DBG) log("listenForNetwork for " + networkRequest);
NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder,
NetworkRequestInfo.LISTEN);
mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri));
return networkRequest;
}
@Override
public void pendingListenForNetwork(NetworkCapabilities networkCapabilities,
PendingIntent operation) {
}
@Override
public void releaseNetworkRequest(NetworkRequest networkRequest) {
mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(),
0, networkRequest));
}
@Override
public void registerNetworkFactory(Messenger messenger, String name) {
enforceConnectivityInternalPermission();
NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel());
mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi));
}
private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) {
if (DBG) log("Got NetworkFactory Messenger for " + nfi.name);
mNetworkFactoryInfos.put(nfi.messenger, nfi);
nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger);
}
@Override
public void unregisterNetworkFactory(Messenger messenger) {
enforceConnectivityInternalPermission();
mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger));
}
private void handleUnregisterNetworkFactory(Messenger messenger) {
NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger);
if (nfi == null) {
loge("Failed to find Messenger in unregisterNetworkFactory");
return;
}
if (DBG) log("unregisterNetworkFactory for " + nfi.name);
}
/**
* NetworkAgentInfo supporting a request by requestId.
* These have already been vetted (their Capabilities satisfy the request)
* and the are the highest scored network available.
* the are keyed off the Requests requestId.
*/
private final SparseArray<NetworkAgentInfo> mNetworkForRequestId =
new SparseArray<NetworkAgentInfo>();
private final SparseArray<NetworkAgentInfo> mNetworkForNetId =
new SparseArray<NetworkAgentInfo>();
// NetworkAgentInfo keyed off its connecting messenger
// TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays
private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos =
new HashMap<Messenger, NetworkAgentInfo>();
// Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated.
private final NetworkRequest mDefaultRequest;
private NetworkAgentInfo getDefaultNetwork() {
return mNetworkForRequestId.get(mDefaultRequest.requestId);
}
private boolean isDefaultNetwork(NetworkAgentInfo nai) {
return nai == getDefaultNetwork();
}
public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo,
LinkProperties linkProperties, NetworkCapabilities networkCapabilities,
int currentScore, NetworkMisc networkMisc) {
enforceConnectivityInternalPermission();
// TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network
// satisfies mDefaultRequest.
NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(),
new NetworkInfo(networkInfo), new LinkProperties(linkProperties),
new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler,
new NetworkMisc(networkMisc), mDefaultRequest);
synchronized (this) {
nai.networkMonitor.systemReady = mSystemReady;
}
if (DBG) log("registerNetworkAgent " + nai);
mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai));
}
private void handleRegisterNetworkAgent(NetworkAgentInfo na) {
if (VDBG) log("Got NetworkAgent Messenger");
mNetworkAgentInfos.put(na.messenger, na);
assignNextNetId(na);
na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger);
NetworkInfo networkInfo = na.networkInfo;
na.networkInfo = null;
updateNetworkInfo(na, networkInfo);
}
private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) {
LinkProperties newLp = networkAgent.linkProperties;
int netId = networkAgent.network.netId;
// The NetworkAgentInfo does not know whether clatd is running on its network or not. Before
// we do anything else, make sure its LinkProperties are accurate.
if (networkAgent.clatd != null) {
networkAgent.clatd.fixupLinkProperties(oldLp);
}
updateInterfaces(newLp, oldLp, netId);
updateMtu(newLp, oldLp);
// TODO - figure out what to do for clat
// for (LinkProperties lp : newLp.getStackedLinks()) {
// updateMtu(lp, null);
// }
updateTcpBufferSizes(networkAgent);
// TODO: deprecate and remove mDefaultDns when we can do so safely.
// For now, use it only when the network has Internet access. http://b/18327075
final boolean useDefaultDns = networkAgent.networkCapabilities.hasCapability(
NetworkCapabilities.NET_CAPABILITY_INTERNET);
final boolean flushDns = updateRoutes(newLp, oldLp, netId);
updateDnses(newLp, oldLp, netId, flushDns, useDefaultDns);
updateClat(newLp, oldLp, networkAgent);
if (isDefaultNetwork(networkAgent)) {
handleApplyDefaultProxy(newLp.getHttpProxy());
} else {
updateProxy(newLp, oldLp, networkAgent);
}
// TODO - move this check to cover the whole function
if (!Objects.equals(newLp, oldLp)) {
notifyIfacesChanged();
notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED);
}
}
private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo nai) {
final boolean wasRunningClat = nai.clatd != null && nai.clatd.isStarted();
final boolean shouldRunClat = Nat464Xlat.requiresClat(nai);
if (!wasRunningClat && shouldRunClat) {
nai.clatd = new Nat464Xlat(mContext, mNetd, mTrackerHandler, nai);
nai.clatd.start();
} else if (wasRunningClat && !shouldRunClat) {
nai.clatd.stop();
}
}
private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) {
CompareResult<String> interfaceDiff = new CompareResult<String>();
if (oldLp != null) {
interfaceDiff = oldLp.compareAllInterfaceNames(newLp);
} else if (newLp != null) {
interfaceDiff.added = newLp.getAllInterfaceNames();
}
for (String iface : interfaceDiff.added) {
try {
if (DBG) log("Adding iface " + iface + " to network " + netId);
mNetd.addInterfaceToNetwork(iface, netId);
} catch (Exception e) {
loge("Exception adding interface: " + e);
}
}
for (String iface : interfaceDiff.removed) {
try {
if (DBG) log("Removing iface " + iface + " from network " + netId);
mNetd.removeInterfaceFromNetwork(iface, netId);
} catch (Exception e) {
loge("Exception removing interface: " + e);
}
}
}
/**
* Have netd update routes from oldLp to newLp.
* @return true if routes changed between oldLp and newLp
*/
private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) {
CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>();
if (oldLp != null) {
routeDiff = oldLp.compareAllRoutes(newLp);
} else if (newLp != null) {
routeDiff.added = newLp.getAllRoutes();
}
// add routes before removing old in case it helps with continuous connectivity
// do this twice, adding non-nexthop routes first, then routes they are dependent on
for (RouteInfo route : routeDiff.added) {
if (route.hasGateway()) continue;
if (DBG) log("Adding Route [" + route + "] to network " + netId);
try {
mNetd.addRoute(netId, route);
} catch (Exception e) {
if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) {
loge("Exception in addRoute for non-gateway: " + e);
}
}
}
for (RouteInfo route : routeDiff.added) {
if (route.hasGateway() == false) continue;
if (DBG) log("Adding Route [" + route + "] to network " + netId);
try {
mNetd.addRoute(netId, route);
} catch (Exception e) {
if ((route.getGateway() instanceof Inet4Address) || VDBG) {
loge("Exception in addRoute for gateway: " + e);
}
}
}
for (RouteInfo route : routeDiff.removed) {
if (DBG) log("Removing Route [" + route + "] from network " + netId);
try {
mNetd.removeRoute(netId, route);
} catch (Exception e) {
loge("Exception in removeRoute: " + e);
}
}
return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty();
}
private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId,
boolean flush, boolean useDefaultDns) {
if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) {
Collection<InetAddress> dnses = newLp.getDnsServers();
if (dnses.size() == 0 && mDefaultDns != null && useDefaultDns) {
dnses = new ArrayList();
dnses.add(mDefaultDns);
if (DBG) {
loge("no dns provided for netId " + netId + ", so using defaults");
}
}
if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses);
try {
mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses),
newLp.getDomains());
} catch (Exception e) {
loge("Exception in setDnsServersForNetwork: " + e);
}
NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId);
if (defaultNai != null && defaultNai.network.netId == netId) {
setDefaultDnsSystemProperties(dnses);
}
flushVmDnsCache();
} else if (flush) {
try {
mNetd.flushNetworkDnsCache(netId);
} catch (Exception e) {
loge("Exception in flushNetworkDnsCache: " + e);
}
flushVmDnsCache();
}
}
private void setDefaultDnsSystemProperties(Collection<InetAddress> dnses) {
int last = 0;
for (InetAddress dns : dnses) {
++last;
String key = "net.dns" + last;
String value = dns.getHostAddress();
SystemProperties.set(key, value);
}
for (int i = last + 1; i <= mNumDnsEntries; ++i) {
String key = "net.dns" + i;
SystemProperties.set(key, "");
}
mNumDnsEntries = last;
}
private void updateCapabilities(NetworkAgentInfo networkAgent,
NetworkCapabilities networkCapabilities) {
if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) {
synchronized (networkAgent) {
networkAgent.networkCapabilities = networkCapabilities;
}
rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore());
notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED);
}
}
private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) {
for (int i = 0; i < nai.networkRequests.size(); i++) {
NetworkRequest nr = nai.networkRequests.valueAt(i);
// Don't send listening requests to factories. b/17393458
if (!isRequest(nr)) continue;
sendUpdatedScoreToFactories(nr, nai.getCurrentScore());
}
}
private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) {
if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString());
for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) {
nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0,
networkRequest);
}
}
private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent,
int notificationType) {
if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) {
Intent intent = new Intent();
intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network);
intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request);
nri.mPendingIntentSent = true;
sendIntent(nri.mPendingIntent, intent);
}
// else not handled
}
private void sendIntent(PendingIntent pendingIntent, Intent intent) {
mPendingIntentWakeLock.acquire();
try {
if (DBG) log("Sending " + pendingIntent);
pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */);
} catch (PendingIntent.CanceledException e) {
if (DBG) log(pendingIntent + " was not sent, it had been canceled.");
mPendingIntentWakeLock.release();
releasePendingNetworkRequest(pendingIntent);
}
// ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished()
}
@Override
public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode,
String resultData, Bundle resultExtras) {
if (DBG) log("Finished sending " + pendingIntent);
mPendingIntentWakeLock.release();
// Release with a delay so the receiving client has an opportunity to put in its
// own request.
releasePendingNetworkRequestWithDelay(pendingIntent);
}
private void callCallbackForRequest(NetworkRequestInfo nri,
NetworkAgentInfo networkAgent, int notificationType) {
if (nri.messenger == null) return; // Default request has no msgr
Bundle bundle = new Bundle();
bundle.putParcelable(NetworkRequest.class.getSimpleName(),
new NetworkRequest(nri.request));
Message msg = Message.obtain();
if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL &&
notificationType != ConnectivityManager.CALLBACK_RELEASED) {
bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network);
}
switch (notificationType) {
case ConnectivityManager.CALLBACK_LOSING: {
msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor
break;
}
case ConnectivityManager.CALLBACK_CAP_CHANGED: {
bundle.putParcelable(NetworkCapabilities.class.getSimpleName(),
new NetworkCapabilities(networkAgent.networkCapabilities));
break;
}
case ConnectivityManager.CALLBACK_IP_CHANGED: {
bundle.putParcelable(LinkProperties.class.getSimpleName(),
new LinkProperties(networkAgent.linkProperties));
break;
}
}
msg.what = notificationType;
msg.setData(bundle);
try {
if (VDBG) {
log("sending notification " + notifyTypeToName(notificationType) +
" for " + nri.request);
}
nri.messenger.send(msg);
} catch (RemoteException e) {
// may occur naturally in the race of binder death.
loge("RemoteException caught trying to send a callback msg for " + nri.request);
}
}
private void teardownUnneededNetwork(NetworkAgentInfo nai) {
for (int i = 0; i < nai.networkRequests.size(); i++) {
NetworkRequest nr = nai.networkRequests.valueAt(i);
// Ignore listening requests.
if (!isRequest(nr)) continue;
loge("Dead network still had at least " + nr);
break;
}
nai.asyncChannel.disconnect();
}
private void handleLingerComplete(NetworkAgentInfo oldNetwork) {
if (oldNetwork == null) {
loge("Unknown NetworkAgentInfo in handleLingerComplete");
return;
}
if (DBG) log("handleLingerComplete for " + oldNetwork.name());
teardownUnneededNetwork(oldNetwork);
}
private void makeDefault(NetworkAgentInfo newNetwork) {
if (DBG) log("Switching to new default network: " + newNetwork);
setupDataActivityTracking(newNetwork);
try {
mNetd.setDefaultNetId(newNetwork.network.netId);
} catch (Exception e) {
loge("Exception setting default network :" + e);
}
notifyLockdownVpn(newNetwork);
handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy());
updateTcpBufferSizes(newNetwork);
setDefaultDnsSystemProperties(newNetwork.linkProperties.getDnsServers());
}
// Handles a network appearing or improving its score.
//
// - Evaluates all current NetworkRequests that can be
// satisfied by newNetwork, and reassigns to newNetwork
// any such requests for which newNetwork is the best.
//
// - Lingers any validated Networks that as a result are no longer
// needed. A network is needed if it is the best network for
// one or more NetworkRequests, or if it is a VPN.
//
// - Tears down newNetwork if it just became validated
// (i.e. nascent==JUST_VALIDATED) but turns out to be unneeded.
//
// - If reapUnvalidatedNetworks==REAP, tears down unvalidated
// networks that have no chance (i.e. even if validated)
// of becoming the highest scoring network.
//
// NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy,
// it does not remove NetworkRequests that other Networks could better satisfy.
// If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}.
// This function should be used when possible instead of {@code rematchAllNetworksAndRequests}
// as it performs better by a factor of the number of Networks.
//
// @param newNetwork is the network to be matched against NetworkRequests.
// @param nascent indicates if newNetwork just became validated, in which case it should be
// torn down if unneeded.
// @param reapUnvalidatedNetworks indicates if an additional pass over all networks should be
// performed to tear down unvalidated networks that have no chance (i.e. even if
// validated) of becoming the highest scoring network.
private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, NascentState nascent,
ReapUnvalidatedNetworks reapUnvalidatedNetworks) {
if (!newNetwork.created) return;
if (nascent == NascentState.JUST_VALIDATED && !newNetwork.everValidated) {
loge("ERROR: nascent network not validated.");
}
boolean keep = newNetwork.isVPN();
boolean isNewDefault = false;
NetworkAgentInfo oldDefaultNetwork = null;
if (DBG) log("rematching " + newNetwork.name());
// Find and migrate to this Network any NetworkRequests for
// which this network is now the best.
ArrayList<NetworkAgentInfo> affectedNetworks = new ArrayList<NetworkAgentInfo>();
if (VDBG) log(" network has: " + newNetwork.networkCapabilities);
for (NetworkRequestInfo nri : mNetworkRequests.values()) {
NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId);
if (newNetwork == currentNetwork) {
if (DBG) {
log("Network " + newNetwork.name() + " was already satisfying" +
" request " + nri.request.requestId + ". No change.");
}
keep = true;
continue;
}
// check if it satisfies the NetworkCapabilities
if (VDBG) log(" checking if request is satisfied: " + nri.request);
if (newNetwork.satisfies(nri.request)) {
if (!nri.isRequest) {
// This is not a request, it's a callback listener.
// Add it to newNetwork regardless of score.
newNetwork.addRequest(nri.request);
continue;
}
// next check if it's better than any current network we're using for
// this request
if (VDBG) {
log("currentScore = " +
(currentNetwork != null ? currentNetwork.getCurrentScore() : 0) +
", newScore = " + newNetwork.getCurrentScore());
}
if (currentNetwork == null ||
currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) {
if (currentNetwork != null) {
if (DBG) log(" accepting network in place of " + currentNetwork.name());
currentNetwork.networkRequests.remove(nri.request.requestId);
currentNetwork.networkLingered.add(nri.request);
affectedNetworks.add(currentNetwork);
} else {
if (DBG) log(" accepting network in place of null");
}
unlinger(newNetwork);
mNetworkForRequestId.put(nri.request.requestId, newNetwork);
newNetwork.addRequest(nri.request);
keep = true;
// Tell NetworkFactories about the new score, so they can stop
// trying to connect if they know they cannot match it.
// TODO - this could get expensive if we have alot of requests for this
// network. Think about if there is a way to reduce this. Push
// netid->request mapping to each factory?
sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore());
if (mDefaultRequest.requestId == nri.request.requestId) {
isNewDefault = true;
oldDefaultNetwork = currentNetwork;
}
}
}
}
// Linger any networks that are no longer needed.
for (NetworkAgentInfo nai : affectedNetworks) {
if (nai.everValidated && unneeded(nai)) {
nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER);
notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING);
} else {
unlinger(nai);
}
}
if (keep) {
if (isNewDefault) {
// Notify system services that this network is up.
makeDefault(newNetwork);
synchronized (ConnectivityService.this) {
// have a new default network, release the transition wakelock in
// a second if it's held. The second pause is to allow apps
// to reconnect over the new network
if (mNetTransitionWakeLock.isHeld()) {
mHandler.sendMessageDelayed(mHandler.obtainMessage(
EVENT_CLEAR_NET_TRANSITION_WAKELOCK,
mNetTransitionWakeLockSerialNumber, 0),
1000);
}
}
}
// do this after the default net is switched, but
// before LegacyTypeTracker sends legacy broadcasts
notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE);
if (isNewDefault) {
// Maintain the illusion: since the legacy API only
// understands one network at a time, we must pretend
// that the current default network disconnected before
// the new one connected.
if (oldDefaultNetwork != null) {
mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(),
oldDefaultNetwork);
}
mDefaultInetConditionPublished = newNetwork.everValidated ? 100 : 0;
mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork);
notifyLockdownVpn(newNetwork);
}
// Notify battery stats service about this network, both the normal
// interface and any stacked links.
// TODO: Avoid redoing this; this must only be done once when a network comes online.
try {
final IBatteryStats bs = BatteryStatsService.getService();
final int type = newNetwork.networkInfo.getType();
final String baseIface = newNetwork.linkProperties.getInterfaceName();
bs.noteNetworkInterfaceType(baseIface, type);
for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) {
final String stackedIface = stacked.getInterfaceName();
bs.noteNetworkInterfaceType(stackedIface, type);
NetworkStatsFactory.noteStackedIface(stackedIface, baseIface);
}
} catch (RemoteException ignored) {
}
// This has to happen after the notifyNetworkCallbacks as that tickles each
// ConnectivityManager instance so that legacy requests correctly bind dns
// requests to this network. The legacy users are listening for this bcast
// and will generally do a dns request so they can ensureRouteToHost and if
// they do that before the callbacks happen they'll use the default network.
//
// TODO: Is there still a race here? We send the broadcast
// after sending the callback, but if the app can receive the
// broadcast before the callback, it might still break.
//
// This *does* introduce a race where if the user uses the new api
// (notification callbacks) and then uses the old api (getNetworkInfo(type))
// they may get old info. Reverse this after the old startUsing api is removed.
// This is on top of the multiple intent sequencing referenced in the todo above.
for (int i = 0; i < newNetwork.networkRequests.size(); i++) {
NetworkRequest nr = newNetwork.networkRequests.valueAt(i);
if (nr.legacyType != TYPE_NONE && isRequest(nr)) {
// legacy type tracker filters out repeat adds
mLegacyTypeTracker.add(nr.legacyType, newNetwork);
}
}
// A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above,
// because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest
// wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the
// newNetwork to the tracker explicitly (it's a no-op if it has already been added).
if (newNetwork.isVPN()) {
mLegacyTypeTracker.add(TYPE_VPN, newNetwork);
}
} else if (nascent == NascentState.JUST_VALIDATED) {
// Only tear down newly validated networks here. Leave unvalidated to either become
// validated (and get evaluated against peers, one losing here), or get reaped (see
// reapUnvalidatedNetworks) if they have no chance of becoming the highest scoring
// network. Networks that have been up for a while and are validated should be torn
// down via the lingering process so communication on that network is given time to
// wrap up.
if (DBG) log("Validated network turns out to be unwanted. Tear it down.");
teardownUnneededNetwork(newNetwork);
}
if (reapUnvalidatedNetworks == ReapUnvalidatedNetworks.REAP) {
for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) {
if (!nai.everValidated && unneeded(nai)) {
if (DBG) log("Reaping " + nai.name());
teardownUnneededNetwork(nai);
}
}
}
}
// Attempt to rematch all Networks with NetworkRequests. This may result in Networks
// being disconnected.
// If only one Network's score or capabilities have been modified since the last time
// this function was called, pass this Network in via the "changed" arugment, otherwise
// pass null.
// If only one Network has been changed but its NetworkCapabilities have not changed,
// pass in the Network's score (from getCurrentScore()) prior to the change via
// "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null.
private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) {
// TODO: This may get slow. The "changed" parameter is provided for future optimization
// to avoid the slowness. It is not simply enough to process just "changed", for
// example in the case where "changed"'s score decreases and another network should begin
// satifying a NetworkRequest that "changed" currently satisfies.
// Optimization: Only reprocess "changed" if its score improved. This is safe because it
// can only add more NetworkRequests satisfied by "changed", and this is exactly what
// rematchNetworkAndRequests() handles.
if (changed != null && oldScore < changed.getCurrentScore()) {
rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED,
ReapUnvalidatedNetworks.REAP);
} else {
for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) {
rematchNetworkAndRequests((NetworkAgentInfo)i.next(),
NascentState.NOT_JUST_VALIDATED,
// Only reap the last time through the loop. Reaping before all rematching
// is complete could incorrectly teardown a network that hasn't yet been
// rematched.
i.hasNext() ? ReapUnvalidatedNetworks.DONT_REAP
: ReapUnvalidatedNetworks.REAP);
}
}
}
private void updateInetCondition(NetworkAgentInfo nai) {
// Don't bother updating until we've graduated to validated at least once.
if (!nai.everValidated) return;
// For now only update icons for default connection.
// TODO: Update WiFi and cellular icons separately. b/17237507
if (!isDefaultNetwork(nai)) return;
int newInetCondition = nai.lastValidated ? 100 : 0;
// Don't repeat publish.
if (newInetCondition == mDefaultInetConditionPublished) return;
mDefaultInetConditionPublished = newInetCondition;
sendInetConditionBroadcast(nai.networkInfo);
}
private void notifyLockdownVpn(NetworkAgentInfo nai) {
if (mLockdownTracker != null) {
if (nai != null && nai.isVPN()) {
mLockdownTracker.onVpnStateChanged(nai.networkInfo);
} else {
mLockdownTracker.onNetworkInfoChanged();
}
}
}
private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) {
NetworkInfo.State state = newInfo.getState();
NetworkInfo oldInfo = null;
synchronized (networkAgent) {
oldInfo = networkAgent.networkInfo;
networkAgent.networkInfo = newInfo;
}
notifyLockdownVpn(networkAgent);
if (oldInfo != null && oldInfo.getState() == state) {
if (VDBG) log("ignoring duplicate network state non-change");
return;
}
if (DBG) {
log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " +
(oldInfo == null ? "null" : oldInfo.getState()) +
" to " + state);
}
if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) {
try {
// This should never fail. Specifying an already in use NetID will cause failure.
if (networkAgent.isVPN()) {
mNetd.createVirtualNetwork(networkAgent.network.netId,
!networkAgent.linkProperties.getDnsServers().isEmpty(),
(networkAgent.networkMisc == null ||
!networkAgent.networkMisc.allowBypass));
} else {
mNetd.createPhysicalNetwork(networkAgent.network.netId);
}
} catch (Exception e) {
loge("Error creating network " + networkAgent.network.netId + ": "
+ e.getMessage());
return;
}
networkAgent.created = true;
updateLinkProperties(networkAgent, null);
notifyIfacesChanged();
notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK);
networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED);
if (networkAgent.isVPN()) {
// Temporarily disable the default proxy (not global).
synchronized (mProxyLock) {
if (!mDefaultProxyDisabled) {
mDefaultProxyDisabled = true;
if (mGlobalProxy == null && mDefaultProxy != null) {
sendProxyBroadcast(null);
}
}
}
// TODO: support proxy per network.
}
// Consider network even though it is not yet validated.
rematchNetworkAndRequests(networkAgent, NascentState.NOT_JUST_VALIDATED,
ReapUnvalidatedNetworks.REAP);
} else if (state == NetworkInfo.State.DISCONNECTED ||
state == NetworkInfo.State.SUSPENDED) {
networkAgent.asyncChannel.disconnect();
if (networkAgent.isVPN()) {
synchronized (mProxyLock) {
if (mDefaultProxyDisabled) {
mDefaultProxyDisabled = false;
if (mGlobalProxy == null && mDefaultProxy != null) {
sendProxyBroadcast(mDefaultProxy);
}
}
}
}
}
}
private void updateNetworkScore(NetworkAgentInfo nai, int score) {
if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score);
if (score < 0) {
loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score +
"). Bumping score to min of 0");
score = 0;
}
final int oldScore = nai.getCurrentScore();
nai.setCurrentScore(score);
rematchAllNetworksAndRequests(nai, oldScore);
sendUpdatedScoreToFactories(nai);
}
// notify only this one new request of the current state
protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) {
int notifyType = ConnectivityManager.CALLBACK_AVAILABLE;
// TODO - read state from monitor to decide what to send.
// if (nai.networkMonitor.isLingering()) {
// notifyType = NetworkCallbacks.LOSING;
// } else if (nai.networkMonitor.isEvaluating()) {
// notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType);
// }
if (nri.mPendingIntent == null) {
callCallbackForRequest(nri, nai, notifyType);
} else {
sendPendingIntentForRequest(nri, nai, notifyType);
}
}
private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) {
// The NetworkInfo we actually send out has no bearing on the real
// state of affairs. For example, if the default connection is mobile,
// and a request for HIPRI has just gone away, we need to pretend that
// HIPRI has just disconnected. So we need to set the type to HIPRI and
// the state to DISCONNECTED, even though the network is of type MOBILE
// and is still connected.
NetworkInfo info = new NetworkInfo(nai.networkInfo);
info.setType(type);
if (connected) {
info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo());
sendConnectedBroadcast(info);
} else {
info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo());
Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info);
intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType());
if (info.isFailover()) {
intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true);
nai.networkInfo.setFailover(false);
}
if (info.getReason() != null) {
intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason());
}
if (info.getExtraInfo() != null) {
intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo());
}
NetworkAgentInfo newDefaultAgent = null;
if (nai.networkRequests.get(mDefaultRequest.requestId) != null) {
newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId);
if (newDefaultAgent != null) {
intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO,
newDefaultAgent.networkInfo);
} else {
intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true);
}
}
intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION,
mDefaultInetConditionPublished);
final Intent immediateIntent = new Intent(intent);
immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE);
sendStickyBroadcast(immediateIntent);
sendStickyBroadcast(intent);
if (newDefaultAgent != null) {
sendConnectedBroadcast(newDefaultAgent.networkInfo);
}
}
}
protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) {
if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name());
for (int i = 0; i < networkAgent.networkRequests.size(); i++) {
NetworkRequest nr = networkAgent.networkRequests.valueAt(i);
NetworkRequestInfo nri = mNetworkRequests.get(nr);
if (VDBG) log(" sending notification for " + nr);
if (nri.mPendingIntent == null) {
callCallbackForRequest(nri, networkAgent, notifyType);
} else {
sendPendingIntentForRequest(nri, networkAgent, notifyType);
}
}
}
private String notifyTypeToName(int notifyType) {
switch (notifyType) {
case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK";
case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE";
case ConnectivityManager.CALLBACK_LOSING: return "LOSING";
case ConnectivityManager.CALLBACK_LOST: return "LOST";
case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE";
case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED";
case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED";
case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED";
}
return "UNKNOWN";
}
/**
* Notify other system services that set of active ifaces has changed.
*/
private void notifyIfacesChanged() {
try {
mStatsService.forceUpdateIfaces();
} catch (Exception ignored) {
}
}
@Override
public boolean addVpnAddress(String address, int prefixLength) {
throwIfLockdownEnabled();
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized (mVpns) {
return mVpns.get(user).addAddress(address, prefixLength);
}
}
@Override
public boolean removeVpnAddress(String address, int prefixLength) {
throwIfLockdownEnabled();
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized (mVpns) {
return mVpns.get(user).removeAddress(address, prefixLength);
}
}
@Override
public boolean setUnderlyingNetworksForVpn(Network[] networks) {
throwIfLockdownEnabled();
int user = UserHandle.getUserId(Binder.getCallingUid());
synchronized (mVpns) {
return mVpns.get(user).setUnderlyingNetworks(networks);
}
}
}
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