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android / platform / frameworks / base / e098050 / . / services / java / com / android / server / ConnectivityService.java
blob: 7c61c4400144eda2f0091c38953592a57d3982f2 [file] [log] [blame]
/*
* 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_BLUETOOTH;
import static android.net.ConnectivityManager.TYPE_DUMMY;
import static android.net.ConnectivityManager.TYPE_ETHERNET;
import static android.net.ConnectivityManager.TYPE_MOBILE;
import static android.net.ConnectivityManager.TYPE_WIFI;
import static android.net.ConnectivityManager.TYPE_WIMAX;
import static android.net.ConnectivityManager.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.bluetooth.BluetoothTetheringDataTracker;
import android.content.ActivityNotFoundException;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.ContextWrapper;
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.CaptivePortalTracker;
import android.net.ConnectivityManager;
import android.net.DummyDataStateTracker;
import android.net.EthernetDataTracker;
import android.net.IConnectivityManager;
import android.net.INetworkManagementEventObserver;
import android.net.INetworkPolicyListener;
import android.net.INetworkPolicyManager;
import android.net.INetworkStatsService;
import android.net.LinkAddress;
import android.net.LinkProperties;
import android.net.LinkProperties.CompareResult;
import android.net.LinkQualityInfo;
import android.net.MobileDataStateTracker;
import android.net.NetworkConfig;
import android.net.NetworkInfo;
import android.net.NetworkInfo.DetailedState;
import android.net.NetworkQuotaInfo;
import android.net.NetworkState;
import android.net.NetworkStateTracker;
import android.net.NetworkUtils;
import android.net.Proxy;
import android.net.ProxyProperties;
import android.net.RouteInfo;
import android.net.SamplingDataTracker;
import android.net.Uri;
import android.net.wifi.WifiStateTracker;
import android.net.wimax.WimaxManagerConstants;
import android.os.AsyncTask;
import android.os.Binder;
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.ServiceManager;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.os.UserHandle;
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.net.LegacyVpnInfo;
import com.android.internal.net.VpnConfig;
import com.android.internal.net.VpnProfile;
import com.android.internal.telephony.DctConstants;
import com.android.internal.telephony.Phone;
import com.android.internal.telephony.PhoneConstants;
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.PacManager;
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 dalvik.system.DexClassLoader;
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.lang.reflect.Constructor;
import java.net.HttpURLConnection;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.URL;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.GregorianCalendar;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Random;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
/**
* @hide
*/
public class ConnectivityService extends IConnectivityManager.Stub {
private static final String TAG = "ConnectivityService";
private static final boolean DBG = true;
private static final boolean VDBG = 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;
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 = (VDBG ? 30 : 12 * 60);
// start network sampling a minute after booting ...
private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (VDBG ? 30 : 60);
AlarmManager mAlarmManager;
// used in recursive route setting to add gateways for the host for which
// a host route was requested.
private static final int MAX_HOSTROUTE_CYCLE_COUNT = 10;
private Tethering mTethering;
private KeyStore mKeyStore;
@GuardedBy("mVpns")
private final SparseArray<Vpn> mVpns = new SparseArray<Vpn>();
private VpnCallback mVpnCallback = new VpnCallback();
private boolean mLockdownEnabled;
private LockdownVpnTracker mLockdownTracker;
private Nat464Xlat mClat;
/** 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[];
/* Handles captive portal check on a network */
private CaptivePortalTracker mCaptivePortalTracker;
/**
* The link properties that define the current links
*/
private LinkProperties mCurrentLinkProperties[];
/**
* A per Net list of the PID's that requested access to the net
* used both as a refcount and for per-PID DNS selection
*/
private List<Integer> mNetRequestersPids[];
// priority order of the nettrackers
// (excluding dynamically set mNetworkPreference)
// TODO - move mNetworkTypePreference into this
private int[] mPriorityList;
private Context mContext;
private int mNetworkPreference;
private int mActiveDefaultNetwork = -1;
// 0 is full bad, 100 is full good
private int mDefaultInetCondition = 0;
private int mDefaultInetConditionPublished = 0;
private boolean mInetConditionChangeInFlight = false;
private int mDefaultConnectionSequence = 0;
private Object mDnsLock = new Object();
private int mNumDnsEntries;
private boolean mTestMode;
private static ConnectivityService sServiceInstance;
private INetworkManagementService mNetd;
private INetworkPolicyManager mPolicyManager;
private static final int ENABLED = 1;
private static final int DISABLED = 0;
private static final boolean ADD = true;
private static final boolean REMOVE = false;
private static final boolean TO_DEFAULT_TABLE = true;
private static final boolean TO_SECONDARY_TABLE = false;
private static final boolean EXEMPT = true;
private static final boolean UNEXEMPT = false;
/**
* used internally as a delayed event to make us switch back to the
* default network
*/
private static final int EVENT_RESTORE_DEFAULT_NETWORK = 1;
/**
* used internally to change our mobile data enabled flag
*/
private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2;
/**
* used internally to change our network preference setting
* arg1 = networkType to prefer
*/
private static final int EVENT_SET_NETWORK_PREFERENCE = 3;
/**
* used internally to synchronize inet condition reports
* arg1 = networkType
* arg2 = condition (0 bad, 100 good)
*/
private static final int EVENT_INET_CONDITION_CHANGE = 4;
/**
* used internally to mark the end of inet condition hold periods
* arg1 = networkType
*/
private static final int EVENT_INET_CONDITION_HOLD_END = 5;
/**
* used internally to set enable/disable cellular data
* arg1 = ENBALED or DISABLED
*/
private static final int EVENT_SET_MOBILE_DATA = 7;
/**
* used internally to clear a wakelock when transitioning
* from one net to another
*/
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
* {@link NetworkStateTracker#setPolicyDataEnable(boolean)}.
*/
private static final int EVENT_SET_POLICY_DATA_ENABLE = 12;
private static final int EVENT_VPN_STATE_CHANGED = 13;
/**
* Used internally to disable fail fast of mobile data
*/
private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14;
/**
* user 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;
/** Handler used for internal events. */
private InternalHandler mHandler;
/** Handler used for incoming {@link NetworkStateTracker} events. */
private NetworkStateTrackerHandler mTrackerHandler;
// list of DeathRecipients used to make sure features are turned off when
// a process dies
private List<FeatureUser> mFeatureUsers;
private boolean mSystemReady;
private Intent mInitialBroadcast;
private PowerManager.WakeLock mNetTransitionWakeLock;
private String mNetTransitionWakeLockCausedBy = "";
private int mNetTransitionWakeLockSerialNumber;
private int mNetTransitionWakeLockTimeout;
private InetAddress mDefaultDns;
// Lock for protecting access to mAddedRoutes and mExemptAddresses
private final Object mRoutesLock = new Object();
// this collection is used to refcount the added routes - if there are none left
// it's time to remove the route from the route table
@GuardedBy("mRoutesLock")
private Collection<RouteInfo> mAddedRoutes = new ArrayList<RouteInfo>();
// this collection corresponds to the entries of mAddedRoutes that have routing exemptions
// used to handle cleanup of exempt rules
@GuardedBy("mRoutesLock")
private Collection<LinkAddress> mExemptAddresses = new ArrayList<LinkAddress>();
// 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 ProxyProperties mDefaultProxy = null;
private Object mProxyLock = new Object();
private boolean mDefaultProxyDisabled = false;
// track the global proxy.
private ProxyProperties mGlobalProxy = null;
private PacManager mPacManager = null;
private SettingsObserver mSettingsObserver;
NetworkConfig[] mNetConfigs;
int mNetworksDefined;
private static class RadioAttributes {
public int mSimultaneity;
public int mType;
public RadioAttributes(String init) {
String fragments[] = init.split(",");
mType = Integer.parseInt(fragments[0]);
mSimultaneity = Integer.parseInt(fragments[1]);
}
}
RadioAttributes[] mRadioAttributes;
// 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;
public ConnectivityService(Context context, INetworkManagementService netd,
INetworkStatsService statsService, INetworkPolicyManager policyManager) {
// Currently, omitting a NetworkFactory will create one internally
// TODO: create here when we have cleaner WiMAX support
this(context, netd, statsService, policyManager, null);
}
public ConnectivityService(Context context, INetworkManagementService netManager,
INetworkStatsService statsService, INetworkPolicyManager policyManager,
NetworkFactory netFactory) {
if (DBG) log("ConnectivityService starting up");
HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread");
handlerThread.start();
mHandler = new InternalHandler(handlerThread.getLooper());
mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper());
if (netFactory == null) {
netFactory = new DefaultNetworkFactory(context, mTrackerHandler);
}
// 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);
}
mContext = checkNotNull(context, "missing Context");
mNetd = checkNotNull(netManager, "missing INetworkManagementService");
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);
mNetTrackers = new NetworkStateTracker[
ConnectivityManager.MAX_NETWORK_TYPE+1];
mCurrentLinkProperties = new LinkProperties[ConnectivityManager.MAX_NETWORK_TYPE+1];
mRadioAttributes = new RadioAttributes[ConnectivityManager.MAX_RADIO_TYPE+1];
mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1];
// Load device network attributes from resources
String[] raStrings = context.getResources().getStringArray(
com.android.internal.R.array.radioAttributes);
for (String raString : raStrings) {
RadioAttributes r = new RadioAttributes(raString);
if (VDBG) log("raString=" + raString + " r=" + r);
if (r.mType > ConnectivityManager.MAX_RADIO_TYPE) {
loge("Error in radioAttributes - ignoring attempt to define type " + r.mType);
continue;
}
if (mRadioAttributes[r.mType] != null) {
loge("Error in radioAttributes - ignoring attempt to redefine type " +
r.mType);
continue;
}
mRadioAttributes[r.mType] = r;
}
// 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;
}
if (mRadioAttributes[n.radio] == null) {
loge("Error in networkAttributes - ignoring attempt to use undefined " +
"radio " + n.radio + " in network type " + n.type);
continue;
}
mNetConfigs[n.type] = n;
mNetworksDefined++;
} catch(Exception e) {
// ignore it - leave the entry null
}
}
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);
}
}
// high priority first
mPriorityList = new int[mNetworksDefined];
{
int insertionPoint = mNetworksDefined-1;
int currentLowest = 0;
int nextLowest = 0;
while (insertionPoint > -1) {
for (NetworkConfig na : mNetConfigs) {
if (na == null) continue;
if (na.priority < currentLowest) continue;
if (na.priority > currentLowest) {
if (na.priority < nextLowest || nextLowest == 0) {
nextLowest = na.priority;
}
continue;
}
mPriorityList[insertionPoint--] = na.type;
}
currentLowest = nextLowest;
nextLowest = 0;
}
}
// Update mNetworkPreference according to user mannually first then overlay config.xml
mNetworkPreference = getPersistedNetworkPreference();
if (mNetworkPreference == -1) {
for (int n : mPriorityList) {
if (mNetConfigs[n].isDefault() && ConnectivityManager.isNetworkTypeValid(n)) {
mNetworkPreference = n;
break;
}
}
if (mNetworkPreference == -1) {
throw new IllegalStateException(
"You should set at least one default Network in config.xml!");
}
}
mNetRequestersPids =
(List<Integer> [])new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE+1];
for (int i : mPriorityList) {
mNetRequestersPids[i] = new ArrayList<Integer>();
}
mFeatureUsers = new ArrayList<FeatureUser>();
mTestMode = SystemProperties.get("cm.test.mode").equals("true")
&& SystemProperties.get("ro.build.type").equals("eng");
// Create and start trackers for hard-coded networks
for (int targetNetworkType : mPriorityList) {
final NetworkConfig config = mNetConfigs[targetNetworkType];
final NetworkStateTracker tracker;
try {
tracker = netFactory.createTracker(targetNetworkType, config);
mNetTrackers[targetNetworkType] = tracker;
} catch (IllegalArgumentException e) {
Slog.e(TAG, "Problem creating " + getNetworkTypeName(targetNetworkType)
+ " tracker: " + e);
continue;
}
tracker.startMonitoring(context, mTrackerHandler);
if (config.isDefault()) {
tracker.reconnect();
}
}
mTethering = new Tethering(mContext, mNetd, statsService, this, mHandler.getLooper());
//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);
mClat = new Nat464Xlat(mContext, mNetd, this, mTrackerHandler);
try {
mNetd.registerObserver(mTethering);
mNetd.registerObserver(mDataActivityObserver);
mNetd.registerObserver(mClat);
} 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();
// start network sampling ..
Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED, null);
mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext,
SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0);
mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE);
setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent);
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);
filter = new IntentFilter();
filter.addAction(CONNECTED_TO_PROVISIONING_NETWORK_ACTION);
mContext.registerReceiver(mProvisioningReceiver, filter);
}
/**
* Factory that creates {@link NetworkStateTracker} instances using given
* {@link NetworkConfig}.
*/
public interface NetworkFactory {
public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config);
}
private static class DefaultNetworkFactory implements NetworkFactory {
private final Context mContext;
private final Handler mTrackerHandler;
public DefaultNetworkFactory(Context context, Handler trackerHandler) {
mContext = context;
mTrackerHandler = trackerHandler;
}
@Override
public NetworkStateTracker createTracker(int targetNetworkType, NetworkConfig config) {
switch (config.radio) {
case TYPE_WIFI:
return new WifiStateTracker(targetNetworkType, config.name);
case TYPE_MOBILE:
return new MobileDataStateTracker(targetNetworkType, config.name);
case TYPE_DUMMY:
return new DummyDataStateTracker(targetNetworkType, config.name);
case TYPE_BLUETOOTH:
return BluetoothTetheringDataTracker.getInstance();
case TYPE_WIMAX:
return makeWimaxStateTracker(mContext, mTrackerHandler);
case TYPE_ETHERNET:
return EthernetDataTracker.getInstance();
default:
throw new IllegalArgumentException(
"Trying to create a NetworkStateTracker for an unknown radio type: "
+ config.radio);
}
}
}
/**
* Loads external WiMAX library and registers as system service, returning a
* {@link NetworkStateTracker} for WiMAX. Caller is still responsible for
* invoking {@link NetworkStateTracker#startMonitoring(Context, Handler)}.
*/
private static NetworkStateTracker makeWimaxStateTracker(
Context context, Handler trackerHandler) {
// Initialize Wimax
DexClassLoader wimaxClassLoader;
Class wimaxStateTrackerClass = null;
Class wimaxServiceClass = null;
Class wimaxManagerClass;
String wimaxJarLocation;
String wimaxLibLocation;
String wimaxManagerClassName;
String wimaxServiceClassName;
String wimaxStateTrackerClassName;
NetworkStateTracker wimaxStateTracker = null;
boolean isWimaxEnabled = context.getResources().getBoolean(
com.android.internal.R.bool.config_wimaxEnabled);
if (isWimaxEnabled) {
try {
wimaxJarLocation = context.getResources().getString(
com.android.internal.R.string.config_wimaxServiceJarLocation);
wimaxLibLocation = context.getResources().getString(
com.android.internal.R.string.config_wimaxNativeLibLocation);
wimaxManagerClassName = context.getResources().getString(
com.android.internal.R.string.config_wimaxManagerClassname);
wimaxServiceClassName = context.getResources().getString(
com.android.internal.R.string.config_wimaxServiceClassname);
wimaxStateTrackerClassName = context.getResources().getString(
com.android.internal.R.string.config_wimaxStateTrackerClassname);
if (DBG) log("wimaxJarLocation: " + wimaxJarLocation);
wimaxClassLoader = new DexClassLoader(wimaxJarLocation,
new ContextWrapper(context).getCacheDir().getAbsolutePath(),
wimaxLibLocation, ClassLoader.getSystemClassLoader());
try {
wimaxManagerClass = wimaxClassLoader.loadClass(wimaxManagerClassName);
wimaxStateTrackerClass = wimaxClassLoader.loadClass(wimaxStateTrackerClassName);
wimaxServiceClass = wimaxClassLoader.loadClass(wimaxServiceClassName);
} catch (ClassNotFoundException ex) {
loge("Exception finding Wimax classes: " + ex.toString());
return null;
}
} catch(Resources.NotFoundException ex) {
loge("Wimax Resources does not exist!!! ");
return null;
}
try {
if (DBG) log("Starting Wimax Service... ");
Constructor wmxStTrkrConst = wimaxStateTrackerClass.getConstructor
(new Class[] {Context.class, Handler.class});
wimaxStateTracker = (NetworkStateTracker) wmxStTrkrConst.newInstance(
context, trackerHandler);
Constructor wmxSrvConst = wimaxServiceClass.getDeclaredConstructor
(new Class[] {Context.class, wimaxStateTrackerClass});
wmxSrvConst.setAccessible(true);
IBinder svcInvoker = (IBinder)wmxSrvConst.newInstance(context, wimaxStateTracker);
wmxSrvConst.setAccessible(false);
ServiceManager.addService(WimaxManagerConstants.WIMAX_SERVICE, svcInvoker);
} catch(Exception ex) {
loge("Exception creating Wimax classes: " + ex.toString());
return null;
}
} else {
loge("Wimax is not enabled or not added to the network attributes!!! ");
return null;
}
return wimaxStateTracker;
}
/**
* Sets the preferred network.
* @param preference the new preference
*/
public void setNetworkPreference(int preference) {
enforceChangePermission();
mHandler.sendMessage(
mHandler.obtainMessage(EVENT_SET_NETWORK_PREFERENCE, preference, 0));
}
public int getNetworkPreference() {
enforceAccessPermission();
int preference;
synchronized(this) {
preference = mNetworkPreference;
}
return preference;
}
private void handleSetNetworkPreference(int preference) {
if (ConnectivityManager.isNetworkTypeValid(preference) &&
mNetConfigs[preference] != null &&
mNetConfigs[preference].isDefault()) {
if (mNetworkPreference != preference) {
final ContentResolver cr = mContext.getContentResolver();
Settings.Global.putInt(cr, Settings.Global.NETWORK_PREFERENCE, preference);
synchronized(this) {
mNetworkPreference = preference;
}
enforcePreference();
}
}
}
private int getConnectivityChangeDelay() {
final ContentResolver cr = mContext.getContentResolver();
/** Check system properties for the default value then use secure settings value, if any. */
int defaultDelay = SystemProperties.getInt(
"conn." + Settings.Global.CONNECTIVITY_CHANGE_DELAY,
ConnectivityManager.CONNECTIVITY_CHANGE_DELAY_DEFAULT);
return Settings.Global.getInt(cr, Settings.Global.CONNECTIVITY_CHANGE_DELAY,
defaultDelay);
}
private int getPersistedNetworkPreference() {
final ContentResolver cr = mContext.getContentResolver();
final int networkPrefSetting = Settings.Global
.getInt(cr, Settings.Global.NETWORK_PREFERENCE, -1);
return networkPrefSetting;
}
/**
* Make the state of network connectivity conform to the preference settings
* In this method, we only tear down a non-preferred network. Establishing
* a connection to the preferred network is taken care of when we handle
* the disconnect event from the non-preferred network
* (see {@link #handleDisconnect(NetworkInfo)}).
*/
private void enforcePreference() {
if (mNetTrackers[mNetworkPreference].getNetworkInfo().isConnected())
return;
if (!mNetTrackers[mNetworkPreference].isAvailable())
return;
for (int t=0; t <= ConnectivityManager.MAX_RADIO_TYPE; t++) {
if (t != mNetworkPreference && mNetTrackers[t] != null &&
mNetTrackers[t].getNetworkInfo().isConnected()) {
if (DBG) {
log("tearing down " + mNetTrackers[t].getNetworkInfo() +
" in enforcePreference");
}
teardown(mNetTrackers[t]);
}
}
}
private boolean teardown(NetworkStateTracker netTracker) {
if (netTracker.teardown()) {
netTracker.setTeardownRequested(true);
return true;
} else {
return false;
}
}
/**
* Check if UID should be blocked from using the network represented by the
* given {@link NetworkStateTracker}.
*/
private boolean isNetworkBlocked(NetworkStateTracker tracker, int uid) {
final String iface = tracker.getLinkProperties().getInterfaceName();
final boolean networkCostly;
final int uidRules;
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 #isNetworkBlocked(NetworkStateTracker, int)}.
*/
private NetworkInfo getFilteredNetworkInfo(NetworkStateTracker tracker, int uid) {
NetworkInfo info = tracker.getNetworkInfo();
if (isNetworkBlocked(tracker, uid)) {
// network is blocked; clone and override state
info = new NetworkInfo(info);
info.setDetailedState(DetailedState.BLOCKED, null, null);
}
if (mLockdownTracker != null) {
info = mLockdownTracker.augmentNetworkInfo(info);
}
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();
return getNetworkInfo(mActiveDefaultNetwork, 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) {
final int uid = Binder.getCallingUid();
provNi = getNetworkInfo(mActiveDefaultNetwork, uid);
}
if (DBG) log("getProvisioningOrActiveNetworkInfo: X provNi=" + provNi);
return provNi;
}
public NetworkInfo getActiveNetworkInfoUnfiltered() {
enforceAccessPermission();
if (isNetworkTypeValid(mActiveDefaultNetwork)) {
final NetworkStateTracker tracker = mNetTrackers[mActiveDefaultNetwork];
if (tracker != null) {
return tracker.getNetworkInfo();
}
}
return null;
}
@Override
public NetworkInfo getActiveNetworkInfoForUid(int uid) {
enforceConnectivityInternalPermission();
return getNetworkInfo(mActiveDefaultNetwork, uid);
}
@Override
public NetworkInfo getNetworkInfo(int networkType) {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
return getNetworkInfo(networkType, uid);
}
private NetworkInfo getNetworkInfo(int networkType, int uid) {
NetworkInfo info = null;
if (isNetworkTypeValid(networkType)) {
final NetworkStateTracker tracker = mNetTrackers[networkType];
if (tracker != null) {
info = getFilteredNetworkInfo(tracker, uid);
}
}
return info;
}
@Override
public NetworkInfo[] getAllNetworkInfo() {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
final ArrayList<NetworkInfo> result = Lists.newArrayList();
synchronized (mRulesLock) {
for (NetworkStateTracker tracker : mNetTrackers) {
if (tracker != null) {
result.add(getFilteredNetworkInfo(tracker, uid));
}
}
}
return result.toArray(new NetworkInfo[result.size()]);
}
@Override
public boolean isNetworkSupported(int networkType) {
enforceAccessPermission();
return (isNetworkTypeValid(networkType) && (mNetTrackers[networkType] != null));
}
/**
* 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() {
return getLinkProperties(mActiveDefaultNetwork);
}
@Override
public LinkProperties getLinkProperties(int networkType) {
enforceAccessPermission();
if (isNetworkTypeValid(networkType)) {
final NetworkStateTracker tracker = mNetTrackers[networkType];
if (tracker != null) {
return tracker.getLinkProperties();
}
}
return null;
}
@Override
public NetworkState[] getAllNetworkState() {
enforceAccessPermission();
final int uid = Binder.getCallingUid();
final ArrayList<NetworkState> result = Lists.newArrayList();
synchronized (mRulesLock) {
for (NetworkStateTracker tracker : mNetTrackers) {
if (tracker != null) {
final NetworkInfo info = getFilteredNetworkInfo(tracker, uid);
result.add(new NetworkState(
info, tracker.getLinkProperties(), tracker.getLinkCapabilities()));
}
}
}
return result.toArray(new NetworkState[result.size()]);
}
private NetworkState getNetworkStateUnchecked(int networkType) {
if (isNetworkTypeValid(networkType)) {
final NetworkStateTracker tracker = mNetTrackers[networkType];
if (tracker != null) {
return new NetworkState(tracker.getNetworkInfo(), tracker.getLinkProperties(),
tracker.getLinkCapabilities());
}
}
return null;
}
@Override
public NetworkQuotaInfo getActiveNetworkQuotaInfo() {
enforceAccessPermission();
final long token = Binder.clearCallingIdentity();
try {
final NetworkState state = getNetworkStateUnchecked(mActiveDefaultNetwork);
if (state != null) {
try {
return mPolicyManager.getNetworkQuotaInfo(state);
} catch (RemoteException e) {
}
}
return null;
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
public boolean isActiveNetworkMetered() {
enforceAccessPermission();
final long token = Binder.clearCallingIdentity();
try {
return isNetworkMeteredUnchecked(mActiveDefaultNetwork);
} finally {
Binder.restoreCallingIdentity(token);
}
}
private boolean isNetworkMeteredUnchecked(int networkType) {
final NetworkState state = getNetworkStateUnchecked(networkType);
if (state != null) {
try {
return mPolicyManager.isNetworkMetered(state);
} catch (RemoteException e) {
}
}
return false;
}
public boolean setRadios(boolean turnOn) {
boolean result = true;
enforceChangePermission();
for (NetworkStateTracker t : mNetTrackers) {
if (t != null) result = t.setRadio(turnOn) && result;
}
return result;
}
public boolean setRadio(int netType, boolean turnOn) {
enforceChangePermission();
if (!ConnectivityManager.isNetworkTypeValid(netType)) {
return false;
}
NetworkStateTracker tracker = mNetTrackers[netType];
return tracker != null && tracker.setRadio(turnOn);
}
private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() {
@Override
public void interfaceClassDataActivityChanged(String label, boolean active) {
int deviceType = Integer.parseInt(label);
sendDataActivityBroadcast(deviceType, active);
}
};
/**
* Used to notice when the calling process dies so we can self-expire
*
* Also used to know if the process has cleaned up after itself when
* our auto-expire timer goes off. The timer has a link to an object.
*
*/
private class FeatureUser implements IBinder.DeathRecipient {
int mNetworkType;
String mFeature;
IBinder mBinder;
int mPid;
int mUid;
long mCreateTime;
FeatureUser(int type, String feature, IBinder binder) {
super();
mNetworkType = type;
mFeature = feature;
mBinder = binder;
mPid = getCallingPid();
mUid = getCallingUid();
mCreateTime = System.currentTimeMillis();
try {
mBinder.linkToDeath(this, 0);
} catch (RemoteException e) {
binderDied();
}
}
void unlinkDeathRecipient() {
mBinder.unlinkToDeath(this, 0);
}
public void binderDied() {
log("ConnectivityService FeatureUser binderDied(" +
mNetworkType + ", " + mFeature + ", " + mBinder + "), created " +
(System.currentTimeMillis() - mCreateTime) + " mSec ago");
stopUsingNetworkFeature(this, false);
}
public void expire() {
if (VDBG) {
log("ConnectivityService FeatureUser expire(" +
mNetworkType + ", " + mFeature + ", " + mBinder +"), created " +
(System.currentTimeMillis() - mCreateTime) + " mSec ago");
}
stopUsingNetworkFeature(this, false);
}
public boolean isSameUser(FeatureUser u) {
if (u == null) return false;
return isSameUser(u.mPid, u.mUid, u.mNetworkType, u.mFeature);
}
public boolean isSameUser(int pid, int uid, int networkType, String feature) {
if ((mPid == pid) && (mUid == uid) && (mNetworkType == networkType) &&
TextUtils.equals(mFeature, feature)) {
return true;
}
return false;
}
public String toString() {
return "FeatureUser("+mNetworkType+","+mFeature+","+mPid+","+mUid+"), created " +
(System.currentTimeMillis() - mCreateTime) + " mSec ago";
}
}
// javadoc from interface
public int startUsingNetworkFeature(int networkType, String feature,
IBinder binder) {
long startTime = 0;
if (DBG) {
startTime = SystemClock.elapsedRealtime();
}
if (VDBG) {
log("startUsingNetworkFeature for net " + networkType + ": " + feature + ", uid="
+ Binder.getCallingUid());
}
enforceChangePermission();
try {
if (!ConnectivityManager.isNetworkTypeValid(networkType) ||
mNetConfigs[networkType] == null) {
return PhoneConstants.APN_REQUEST_FAILED;
}
FeatureUser f = new FeatureUser(networkType, feature, binder);
// TODO - move this into individual networktrackers
int usedNetworkType = convertFeatureToNetworkType(networkType, feature);
if (mLockdownEnabled) {
// Since carrier APNs usually aren't available from VPN
// endpoint, mark them as unavailable.
return PhoneConstants.APN_TYPE_NOT_AVAILABLE;
}
if (mProtectedNetworks.contains(usedNetworkType)) {
enforceConnectivityInternalPermission();
}
// if UID is restricted, don't allow them to bring up metered APNs
final boolean networkMetered = isNetworkMeteredUnchecked(usedNetworkType);
final int uidRules;
synchronized (mRulesLock) {
uidRules = mUidRules.get(Binder.getCallingUid(), RULE_ALLOW_ALL);
}
if (networkMetered && (uidRules & RULE_REJECT_METERED) != 0) {
return PhoneConstants.APN_REQUEST_FAILED;
}
NetworkStateTracker network = mNetTrackers[usedNetworkType];
if (network != null) {
Integer currentPid = new Integer(getCallingPid());
if (usedNetworkType != networkType) {
NetworkInfo ni = network.getNetworkInfo();
if (ni.isAvailable() == false) {
if (!TextUtils.equals(feature,Phone.FEATURE_ENABLE_DUN_ALWAYS)) {
if (DBG) log("special network not available ni=" + ni.getTypeName());
return PhoneConstants.APN_TYPE_NOT_AVAILABLE;
} else {
// else make the attempt anyway - probably giving REQUEST_STARTED below
if (DBG) {
log("special network not available, but try anyway ni=" +
ni.getTypeName());
}
}
}
int restoreTimer = getRestoreDefaultNetworkDelay(usedNetworkType);
synchronized(this) {
boolean addToList = true;
if (restoreTimer < 0) {
// In case there is no timer is specified for the feature,
// make sure we don't add duplicate entry with the same request.
for (FeatureUser u : mFeatureUsers) {
if (u.isSameUser(f)) {
// Duplicate user is found. Do not add.
addToList = false;
break;
}
}
}
if (addToList) mFeatureUsers.add(f);
if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) {
// this gets used for per-pid dns when connected
mNetRequestersPids[usedNetworkType].add(currentPid);
}
}
if (restoreTimer >= 0) {
mHandler.sendMessageDelayed(mHandler.obtainMessage(
EVENT_RESTORE_DEFAULT_NETWORK, f), restoreTimer);
}
if ((ni.isConnectedOrConnecting() == true) &&
!network.isTeardownRequested()) {
if (ni.isConnected() == true) {
final long token = Binder.clearCallingIdentity();
try {
// add the pid-specific dns
handleDnsConfigurationChange(usedNetworkType);
if (VDBG) log("special network already active");
} finally {
Binder.restoreCallingIdentity(token);
}
return PhoneConstants.APN_ALREADY_ACTIVE;
}
if (VDBG) log("special network already connecting");
return PhoneConstants.APN_REQUEST_STARTED;
}
// check if the radio in play can make another contact
// assume if cannot for now
if (DBG) {
log("startUsingNetworkFeature reconnecting to " + networkType + ": " +
feature);
}
if (network.reconnect()) {
if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_STARTED");
return PhoneConstants.APN_REQUEST_STARTED;
} else {
if (DBG) log("startUsingNetworkFeature X: return APN_REQUEST_FAILED");
return PhoneConstants.APN_REQUEST_FAILED;
}
} else {
// need to remember this unsupported request so we respond appropriately on stop
synchronized(this) {
mFeatureUsers.add(f);
if (!mNetRequestersPids[usedNetworkType].contains(currentPid)) {
// this gets used for per-pid dns when connected
mNetRequestersPids[usedNetworkType].add(currentPid);
}
}
if (DBG) log("startUsingNetworkFeature X: return -1 unsupported feature.");
return -1;
}
}
if (DBG) log("startUsingNetworkFeature X: return APN_TYPE_NOT_AVAILABLE");
return PhoneConstants.APN_TYPE_NOT_AVAILABLE;
} finally {
if (DBG) {
final long execTime = SystemClock.elapsedRealtime() - startTime;
if (execTime > 250) {
loge("startUsingNetworkFeature took too long: " + execTime + "ms");
} else {
if (VDBG) log("startUsingNetworkFeature took " + execTime + "ms");
}
}
}
}
// javadoc from interface
public int stopUsingNetworkFeature(int networkType, String feature) {
enforceChangePermission();
int pid = getCallingPid();
int uid = getCallingUid();
FeatureUser u = null;
boolean found = false;
synchronized(this) {
for (FeatureUser x : mFeatureUsers) {
if (x.isSameUser(pid, uid, networkType, feature)) {
u = x;
found = true;
break;
}
}
}
if (found && u != null) {
if (VDBG) log("stopUsingNetworkFeature: X");
// stop regardless of how many other time this proc had called start
return stopUsingNetworkFeature(u, true);
} else {
// none found!
if (VDBG) log("stopUsingNetworkFeature: X not a live request, ignoring");
return 1;
}
}
private int stopUsingNetworkFeature(FeatureUser u, boolean ignoreDups) {
int networkType = u.mNetworkType;
String feature = u.mFeature;
int pid = u.mPid;
int uid = u.mUid;
NetworkStateTracker tracker = null;
boolean callTeardown = false; // used to carry our decision outside of sync block
if (VDBG) {
log("stopUsingNetworkFeature: net " + networkType + ": " + feature);
}
if (!ConnectivityManager.isNetworkTypeValid(networkType)) {
if (DBG) {
log("stopUsingNetworkFeature: net " + networkType + ": " + feature +
", net is invalid");
}
return -1;
}
// need to link the mFeatureUsers list with the mNetRequestersPids state in this
// sync block
synchronized(this) {
// check if this process still has an outstanding start request
if (!mFeatureUsers.contains(u)) {
if (VDBG) {
log("stopUsingNetworkFeature: this process has no outstanding requests" +
", ignoring");
}
return 1;
}
u.unlinkDeathRecipient();
mFeatureUsers.remove(mFeatureUsers.indexOf(u));
// If we care about duplicate requests, check for that here.
//
// This is done to support the extension of a request - the app
// can request we start the network feature again and renew the
// auto-shutoff delay. Normal "stop" calls from the app though
// do not pay attention to duplicate requests - in effect the
// API does not refcount and a single stop will counter multiple starts.
if (ignoreDups == false) {
for (FeatureUser x : mFeatureUsers) {
if (x.isSameUser(u)) {
if (VDBG) log("stopUsingNetworkFeature: dup is found, ignoring");
return 1;
}
}
}
// TODO - move to individual network trackers
int usedNetworkType = convertFeatureToNetworkType(networkType, feature);
tracker = mNetTrackers[usedNetworkType];
if (tracker == null) {
if (DBG) {
log("stopUsingNetworkFeature: net " + networkType + ": " + feature +
" no known tracker for used net type " + usedNetworkType);
}
return -1;
}
if (usedNetworkType != networkType) {
Integer currentPid = new Integer(pid);
mNetRequestersPids[usedNetworkType].remove(currentPid);
final long token = Binder.clearCallingIdentity();
try {
reassessPidDns(pid, true);
} finally {
Binder.restoreCallingIdentity(token);
}
flushVmDnsCache();
if (mNetRequestersPids[usedNetworkType].size() != 0) {
if (VDBG) {
log("stopUsingNetworkFeature: net " + networkType + ": " + feature +
" others still using it");
}
return 1;
}
callTeardown = true;
} else {
if (DBG) {
log("stopUsingNetworkFeature: net " + networkType + ": " + feature +
" not a known feature - dropping");
}
}
}
if (callTeardown) {
if (DBG) {
log("stopUsingNetworkFeature: teardown net " + networkType + ": " + feature);
}
tracker.teardown();
return 1;
} else {
return -1;
}
}
/**
* @deprecated use requestRouteToHostAddress instead
*
* 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 requestRouteToHost(int networkType, int hostAddress) {
InetAddress inetAddress = NetworkUtils.intToInetAddress(hostAddress);
if (inetAddress == null) {
return false;
}
return requestRouteToHostAddress(networkType, inetAddress.getAddress());
}
/**
* 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();
}
if (!ConnectivityManager.isNetworkTypeValid(networkType)) {
if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType);
return false;
}
NetworkStateTracker tracker = mNetTrackers[networkType];
DetailedState netState = tracker.getNetworkInfo().getDetailedState();
if (tracker == null || (netState != DetailedState.CONNECTED &&
netState != DetailedState.CAPTIVE_PORTAL_CHECK) ||
tracker.isTeardownRequested()) {
if (VDBG) {
log("requestRouteToHostAddress on down network "
+ "(" + networkType + ") - dropped"
+ " tracker=" + tracker
+ " netState=" + netState
+ " isTeardownRequested="
+ ((tracker != null) ? tracker.isTeardownRequested() : "tracker:null"));
}
return false;
}
final long token = Binder.clearCallingIdentity();
try {
InetAddress addr = InetAddress.getByAddress(hostAddress);
LinkProperties lp = tracker.getLinkProperties();
boolean ok = addRouteToAddress(lp, addr, EXEMPT);
if (DBG) log("requestRouteToHostAddress ok=" + ok);
return ok;
} catch (UnknownHostException e) {
if (DBG) log("requestRouteToHostAddress got " + e.toString());
} finally {
Binder.restoreCallingIdentity(token);
}
if (DBG) log("requestRouteToHostAddress X bottom return false");
return false;
}
private boolean addRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable,
boolean exempt) {
return modifyRoute(p, r, 0, ADD, toDefaultTable, exempt);
}
private boolean removeRoute(LinkProperties p, RouteInfo r, boolean toDefaultTable) {
return modifyRoute(p, r, 0, REMOVE, toDefaultTable, UNEXEMPT);
}
private boolean addRouteToAddress(LinkProperties lp, InetAddress addr, boolean exempt) {
return modifyRouteToAddress(lp, addr, ADD, TO_DEFAULT_TABLE, exempt);
}
private boolean removeRouteToAddress(LinkProperties lp, InetAddress addr) {
return modifyRouteToAddress(lp, addr, REMOVE, TO_DEFAULT_TABLE, UNEXEMPT);
}
private boolean modifyRouteToAddress(LinkProperties lp, InetAddress addr, boolean doAdd,
boolean toDefaultTable, boolean exempt) {
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);
}
}
return modifyRoute(lp, bestRoute, 0, doAdd, toDefaultTable, exempt);
}
private boolean modifyRoute(LinkProperties lp, RouteInfo r, int cycleCount, boolean doAdd,
boolean toDefaultTable, boolean exempt) {
if ((lp == null) || (r == null)) {
if (DBG) log("modifyRoute got unexpected null: " + lp + ", " + r);
return false;
}
if (cycleCount > MAX_HOSTROUTE_CYCLE_COUNT) {
loge("Error modifying route - too much recursion");
return false;
}
String ifaceName = r.getInterface();
if(ifaceName == null) {
loge("Error modifying route - no interface name");
return false;
}
if (r.hasGateway()) {
RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), r.getGateway());
if (bestRoute != null) {
if (bestRoute.getGateway().equals(r.getGateway())) {
// if there is no better route, add the implied hostroute for our gateway
bestRoute = RouteInfo.makeHostRoute(r.getGateway(), ifaceName);
} else {
// if we will connect to our gateway through another route, add a direct
// route to it's gateway
bestRoute = RouteInfo.makeHostRoute(r.getGateway(),
bestRoute.getGateway(),
ifaceName);
}
modifyRoute(lp, bestRoute, cycleCount+1, doAdd, toDefaultTable, exempt);
}
}
if (doAdd) {
if (VDBG) log("Adding " + r + " for interface " + ifaceName);
try {
if (toDefaultTable) {
synchronized (mRoutesLock) {
// only track default table - only one apps can effect
mAddedRoutes.add(r);
mNetd.addRoute(ifaceName, r);
if (exempt) {
LinkAddress dest = r.getDestination();
if (!mExemptAddresses.contains(dest)) {
mNetd.setHostExemption(dest);
mExemptAddresses.add(dest);
}
}
}
} else {
mNetd.addSecondaryRoute(ifaceName, r);
}
} catch (Exception e) {
// never crash - catch them all
if (DBG) loge("Exception trying to add a route: " + e);
return false;
}
} else {
// if we remove this one and there are no more like it, then refcount==0 and
// we can remove it from the table
if (toDefaultTable) {
synchronized (mRoutesLock) {
mAddedRoutes.remove(r);
if (mAddedRoutes.contains(r) == false) {
if (VDBG) log("Removing " + r + " for interface " + ifaceName);
try {
mNetd.removeRoute(ifaceName, r);
LinkAddress dest = r.getDestination();
if (mExemptAddresses.contains(dest)) {
mNetd.clearHostExemption(dest);
mExemptAddresses.remove(dest);
}
} catch (Exception e) {
// never crash - catch them all
if (VDBG) loge("Exception trying to remove a route: " + e);
return false;
}
} else {
if (VDBG) log("not removing " + r + " as it's still in use");
}
}
} else {
if (VDBG) log("Removing " + r + " for interface " + ifaceName);
try {
mNetd.removeSecondaryRoute(ifaceName, r);
} catch (Exception e) {
// never crash - catch them all
if (VDBG) loge("Exception trying to remove a route: " + e);
return false;
}
}
}
return true;
}
/**
* @see ConnectivityManager#getMobileDataEnabled()
*/
public boolean getMobileDataEnabled() {
// TODO: This detail should probably be in DataConnectionTracker's
// which is where we store the value and maybe make this
// asynchronous.
enforceAccessPermission();
boolean retVal = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.MOBILE_DATA, 1) == 1;
if (VDBG) log("getMobileDataEnabled returning " + retVal);
return retVal;
}
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.
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);
}
}
}
}
};
/**
* @see ConnectivityManager#setMobileDataEnabled(boolean)
*/
public void setMobileDataEnabled(boolean enabled) {
enforceChangePermission();
if (DBG) log("setMobileDataEnabled(" + enabled + ")");
mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_MOBILE_DATA,
(enabled ? ENABLED : DISABLED), 0));
}
private void handleSetMobileData(boolean enabled) {
if (mNetTrackers[ConnectivityManager.TYPE_MOBILE] != null) {
if (VDBG) {
log(mNetTrackers[ConnectivityManager.TYPE_MOBILE].toString() + enabled);
}
mNetTrackers[ConnectivityManager.TYPE_MOBILE].setUserDataEnable(enabled);
}
if (mNetTrackers[ConnectivityManager.TYPE_WIMAX] != null) {
if (VDBG) {
log(mNetTrackers[ConnectivityManager.TYPE_WIMAX].toString() + enabled);
}
mNetTrackers[ConnectivityManager.TYPE_WIMAX].setUserDataEnable(enabled);
}
}
@Override
public void setPolicyDataEnable(int networkType, boolean enabled) {
// only someone like NPMS should only be calling us
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
mHandler.sendMessage(mHandler.obtainMessage(
EVENT_SET_POLICY_DATA_ENABLE, networkType, (enabled ? ENABLED : DISABLED)));
}
private void handleSetPolicyDataEnable(int networkType, boolean enabled) {
if (isNetworkTypeValid(networkType)) {
final NetworkStateTracker tracker = mNetTrackers[networkType];
if (tracker != null) {
tracker.setPolicyDataEnable(enabled);
}
}
}
private void enforceAccessPermission() {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.ACCESS_NETWORK_STATE,
"ConnectivityService");
}
private void enforceChangePermission() {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.CHANGE_NETWORK_STATE,
"ConnectivityService");
}
// TODO Make this a special check when it goes public
private void enforceTetherChangePermission() {
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");
}
private void enforceMarkNetworkSocketPermission() {
//Media server special case
if (Binder.getCallingUid() == Process.MEDIA_UID) {
return;
}
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.MARK_NETWORK_SOCKET,
"ConnectivityService");
}
/**
* Handle a {@code DISCONNECTED} event. If this pertains to the non-active
* network, we ignore it. If it is for the active network, we send out a
* broadcast. But first, we check whether it might be possible to connect
* to a different network.
* @param info the {@code NetworkInfo} for the network
*/
private void handleDisconnect(NetworkInfo info) {
int prevNetType = info.getType();
mNetTrackers[prevNetType].setTeardownRequested(false);
// Remove idletimer previously setup in {@code handleConnect}
removeDataActivityTracking(prevNetType);
/*
* If the disconnected network is not the active one, then don't report
* this as a loss of connectivity. What probably happened is that we're
* getting the disconnect for a network that we explicitly disabled
* in accordance with network preference policies.
*/
if (!mNetConfigs[prevNetType].isDefault()) {
List<Integer> pids = mNetRequestersPids[prevNetType];
for (Integer pid : pids) {
// will remove them because the net's no longer connected
// need to do this now as only now do we know the pids and
// can properly null things that are no longer referenced.
reassessPidDns(pid.intValue(), false);
}
}
Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
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());
}
if (mNetConfigs[prevNetType].isDefault()) {
tryFailover(prevNetType);
if (mActiveDefaultNetwork != -1) {
NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo();
intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo);
} else {
mDefaultInetConditionPublished = 0; // we're not connected anymore
intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true);
}
}
intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished);
// Reset interface if no other connections are using the same interface
boolean doReset = true;
LinkProperties linkProperties = mNetTrackers[prevNetType].getLinkProperties();
if (linkProperties != null) {
String oldIface = linkProperties.getInterfaceName();
if (TextUtils.isEmpty(oldIface) == false) {
for (NetworkStateTracker networkStateTracker : mNetTrackers) {
if (networkStateTracker == null) continue;
NetworkInfo networkInfo = networkStateTracker.getNetworkInfo();
if (networkInfo.isConnected() && networkInfo.getType() != prevNetType) {
LinkProperties l = networkStateTracker.getLinkProperties();
if (l == null) continue;
if (oldIface.equals(l.getInterfaceName())) {
doReset = false;
break;
}
}
}
}
}
// do this before we broadcast the change
handleConnectivityChange(prevNetType, doReset);
final Intent immediateIntent = new Intent(intent);
immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE);
sendStickyBroadcast(immediateIntent);
sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay());
/*
* If the failover network is already connected, then immediately send
* out a followup broadcast indicating successful failover
*/
if (mActiveDefaultNetwork != -1) {
sendConnectedBroadcastDelayed(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo(),
getConnectivityChangeDelay());
}
}
private void tryFailover(int prevNetType) {
/*
* If this is a default network, check if other defaults are available.
* Try to reconnect on all available and let them hash it out when
* more than one connects.
*/
if (mNetConfigs[prevNetType].isDefault()) {
if (mActiveDefaultNetwork == prevNetType) {
if (DBG) {
log("tryFailover: set mActiveDefaultNetwork=-1, prevNetType=" + prevNetType);
}
mActiveDefaultNetwork = -1;
}
// don't signal a reconnect for anything lower or equal priority than our
// current connected default
// TODO - don't filter by priority now - nice optimization but risky
// int currentPriority = -1;
// if (mActiveDefaultNetwork != -1) {
// currentPriority = mNetConfigs[mActiveDefaultNetwork].mPriority;
// }
for (int checkType=0; checkType <= ConnectivityManager.MAX_NETWORK_TYPE; checkType++) {
if (checkType == prevNetType) continue;
if (mNetConfigs[checkType] == null) continue;
if (!mNetConfigs[checkType].isDefault()) continue;
if (mNetTrackers[checkType] == null) continue;
// Enabling the isAvailable() optimization caused mobile to not get
// selected if it was in the middle of error handling. Specifically
// a moble connection that took 30 seconds to complete the DEACTIVATE_DATA_CALL
// would not be available and we wouldn't get connected to anything.
// So removing the isAvailable() optimization below for now. TODO: This
// optimization should work and we need to investigate why it doesn't work.
// This could be related to how DEACTIVATE_DATA_CALL is reporting its
// complete before it is really complete.
// if (!mNetTrackers[checkType].isAvailable()) continue;
// if (currentPriority >= mNetConfigs[checkType].mPriority) continue;
NetworkStateTracker checkTracker = mNetTrackers[checkType];
NetworkInfo checkInfo = checkTracker.getNetworkInfo();
if (!checkInfo.isConnectedOrConnecting() || checkTracker.isTeardownRequested()) {
checkInfo.setFailover(true);
checkTracker.reconnect();
}
if (DBG) log("Attempting to switch to " + checkInfo.getTypeName());
}
}
}
public void sendConnectedBroadcast(NetworkInfo info) {
enforceConnectivityInternalPermission();
sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE);
sendGeneralBroadcast(info, CONNECTIVITY_ACTION);
}
private void sendConnectedBroadcastDelayed(NetworkInfo info, int delayMs) {
sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE);
sendGeneralBroadcastDelayed(info, CONNECTIVITY_ACTION, delayMs);
}
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 sendGeneralBroadcastDelayed(NetworkInfo info, String bcastType, int delayMs) {
sendStickyBroadcastDelayed(makeGeneralIntent(info, bcastType), delayMs);
}
private void sendDataActivityBroadcast(int deviceType, boolean active) {
Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE);
intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType);
intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active);
final long ident = Binder.clearCallingIdentity();
try {
mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL,
RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
/**
* Called when an attempt to fail over to another network has failed.
* @param info the {@link NetworkInfo} for the failed network
*/
private void handleConnectionFailure(NetworkInfo info) {
mNetTrackers[info.getType()].setTeardownRequested(false);
String reason = info.getReason();
String extraInfo = info.getExtraInfo();
String reasonText;
if (reason == null) {
reasonText = ".";
} else {
reasonText = " (" + reason + ").";
}
loge("Attempt to connect to " + info.getTypeName() + " failed" + reasonText);
Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info));
intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType());
if (getActiveNetworkInfo() == null) {
intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true);
}
if (reason != null) {
intent.putExtra(ConnectivityManager.EXTRA_REASON, reason);
}
if (extraInfo != null) {
intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, extraInfo);
}
if (info.isFailover()) {
intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true);
info.setFailover(false);
}
if (mNetConfigs[info.getType()].isDefault()) {
tryFailover(info.getType());
if (mActiveDefaultNetwork != -1) {
NetworkInfo switchTo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo();
intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, switchTo);
} else {
mDefaultInetConditionPublished = 0;
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 the failover network is already connected, then immediately send
* out a followup broadcast indicating successful failover
*/
if (mActiveDefaultNetwork != -1) {
sendConnectedBroadcast(mNetTrackers[mActiveDefaultNetwork].getNetworkInfo());
}
}
private void sendStickyBroadcast(Intent intent) {
synchronized(this) {
if (!mSystemReady) {
mInitialBroadcast = new Intent(intent);
}
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
if (VDBG) {
log("sendStickyBroadcast: action=" + intent.getAction());
}
final long ident = Binder.clearCallingIdentity();
try {
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
} finally {
Binder.restoreCallingIdentity(ident);
}
}
}
private void sendStickyBroadcastDelayed(Intent intent, int delayMs) {
if (delayMs <= 0) {
sendStickyBroadcast(intent);
} else {
if (VDBG) {
log("sendStickyBroadcastDelayed: delayMs=" + delayMs + ", action="
+ intent.getAction());
}
mHandler.sendMessageDelayed(mHandler.obtainMessage(
EVENT_SEND_STICKY_BROADCAST_INTENT, intent), delayMs);
}
}
void systemReady() {
mCaptivePortalTracker = CaptivePortalTracker.makeCaptivePortalTracker(mContext, this);
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);
}
}
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);
}
}
};
private boolean isNewNetTypePreferredOverCurrentNetType(int type) {
if (((type != mNetworkPreference)
&& (mNetConfigs[mActiveDefaultNetwork].priority > mNetConfigs[type].priority))
|| (mNetworkPreference == mActiveDefaultNetwork)) {
return false;
}
return true;
}
private void handleConnect(NetworkInfo info) {
final int newNetType = info.getType();
setupDataActivityTracking(newNetType);
// snapshot isFailover, because sendConnectedBroadcast() resets it
boolean isFailover = info.isFailover();
final NetworkStateTracker thisNet = mNetTrackers[newNetType];
final String thisIface = thisNet.getLinkProperties().getInterfaceName();
if (VDBG) {
log("handleConnect: E newNetType=" + newNetType + " thisIface=" + thisIface
+ " isFailover" + isFailover);
}
// if this is a default net and other default is running
// kill the one not preferred
if (mNetConfigs[newNetType].isDefault()) {
if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != newNetType) {
if (isNewNetTypePreferredOverCurrentNetType(newNetType)) {
// tear down the other
NetworkStateTracker otherNet =
mNetTrackers[mActiveDefaultNetwork];
if (DBG) {
log("Policy requires " + otherNet.getNetworkInfo().getTypeName() +
" teardown");
}
if (!teardown(otherNet)) {
loge("Network declined teardown request");
teardown(thisNet);
return;
}
} else {
// don't accept this one
if (VDBG) {
log("Not broadcasting CONNECT_ACTION " +
"to torn down network " + info.getTypeName());
}
teardown(thisNet);
return;
}
}
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);
}
}
mActiveDefaultNetwork = newNetType;
// this will cause us to come up initially as unconnected and switching
// to connected after our normal pause unless somebody reports us as reall
// disconnected
mDefaultInetConditionPublished = 0;
mDefaultConnectionSequence++;
mInetConditionChangeInFlight = false;
// Don't do this - if we never sign in stay, grey
//reportNetworkCondition(mActiveDefaultNetwork, 100);
}
thisNet.setTeardownRequested(false);
updateNetworkSettings(thisNet);
updateMtuSizeSettings(thisNet);
handleConnectivityChange(newNetType, false);
sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay());
// notify battery stats service about this network
if (thisIface != null) {
try {
BatteryStatsService.getService().noteNetworkInterfaceType(thisIface, newNetType);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
}
private void handleCaptivePortalTrackerCheck(NetworkInfo info) {
if (DBG) log("Captive portal check " + info);
int type = info.getType();
final NetworkStateTracker thisNet = mNetTrackers[type];
if (mNetConfigs[type].isDefault()) {
if (mActiveDefaultNetwork != -1 && mActiveDefaultNetwork != type) {
if (isNewNetTypePreferredOverCurrentNetType(type)) {
if (DBG) log("Captive check on " + info.getTypeName());
mCaptivePortalTracker.detectCaptivePortal(new NetworkInfo(info));
return;
} else {
if (DBG) log("Tear down low priority net " + info.getTypeName());
teardown(thisNet);
return;
}
}
}
if (DBG) log("handleCaptivePortalTrackerCheck: call captivePortalCheckComplete ni=" + info);
thisNet.captivePortalCheckComplete();
}
/** @hide */
@Override
public void captivePortalCheckComplete(NetworkInfo info) {
enforceConnectivityInternalPermission();
if (DBG) log("captivePortalCheckComplete: ni=" + info);
mNetTrackers[info.getType()].captivePortalCheckComplete();
}
/** @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 interface.
*
* Every {@code setupDataActivityTracking} should be paired with a
* {@link removeDataActivityTracking} for cleanup.
*/
private void setupDataActivityTracking(int type) {
final NetworkStateTracker thisNet = mNetTrackers[type];
final String iface = thisNet.getLinkProperties().getInterfaceName();
final int timeout;
if (ConnectivityManager.isNetworkTypeMobile(type)) {
timeout = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE,
0);
// Canonicalize mobile network type
type = ConnectivityManager.TYPE_MOBILE;
} else if (ConnectivityManager.TYPE_WIFI == type) {
timeout = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI,
0);
} else {
// do not track any other networks
timeout = 0;
}
if (timeout > 0 && iface != null) {
try {
mNetd.addIdleTimer(iface, timeout, Integer.toString(type));
} catch (RemoteException e) {
}
}
}
/**
* Remove data activity tracking when network disconnects.
*/
private void removeDataActivityTracking(int type) {
final NetworkStateTracker net = mNetTrackers[type];
final String iface = net.getLinkProperties().getInterfaceName();
if (iface != null && (ConnectivityManager.isNetworkTypeMobile(type) ||
ConnectivityManager.TYPE_WIFI == type)) {
try {
// the call fails silently if no idletimer setup for this interface
mNetd.removeIdleTimer(iface);
} catch (RemoteException e) {
}
}
}
/**
* After a change in the connectivity state of a network. We're mainly
* concerned with making sure that the list of DNS servers is set up
* according to which networks are connected, and ensuring that the
* right routing table entries exist.
*/
private void handleConnectivityChange(int netType, boolean doReset) {
int resetMask = doReset ? NetworkUtils.RESET_ALL_ADDRESSES : 0;
boolean exempt = ConnectivityManager.isNetworkTypeExempt(netType);
if (VDBG) {
log("handleConnectivityChange: netType=" + netType + " doReset=" + doReset
+ " resetMask=" + resetMask);
}
/*
* If a non-default network is enabled, add the host routes that
* will allow it's DNS servers to be accessed.
*/
handleDnsConfigurationChange(netType);
LinkProperties curLp = mCurrentLinkProperties[netType];
LinkProperties newLp = null;
if (mNetTrackers[netType].getNetworkInfo().isConnected()) {
newLp = mNetTrackers[netType].getLinkProperties();
if (VDBG) {
log("handleConnectivityChange: changed linkProperty[" + netType + "]:" +
" doReset=" + doReset + " resetMask=" + resetMask +
"\n curLp=" + curLp +
"\n newLp=" + newLp);
}
if (curLp != null) {
if (curLp.isIdenticalInterfaceName(newLp)) {
CompareResult<LinkAddress> car = curLp.compareAddresses(newLp);
if ((car.removed.size() != 0) || (car.added.size() != 0)) {
for (LinkAddress linkAddr : car.removed) {
if (linkAddr.getAddress() instanceof Inet4Address) {
resetMask |= NetworkUtils.RESET_IPV4_ADDRESSES;
}
if (linkAddr.getAddress() instanceof Inet6Address) {
resetMask |= NetworkUtils.RESET_IPV6_ADDRESSES;
}
}
if (DBG) {
log("handleConnectivityChange: addresses changed" +
" linkProperty[" + netType + "]:" + " resetMask=" + resetMask +
"\n car=" + car);
}
} else {
if (DBG) {
log("handleConnectivityChange: address are the same reset per doReset" +
" linkProperty[" + netType + "]:" +
" resetMask=" + resetMask);
}
}
} else {
resetMask = NetworkUtils.RESET_ALL_ADDRESSES;
if (DBG) {
log("handleConnectivityChange: interface not not equivalent reset both" +
" linkProperty[" + netType + "]:" +
" resetMask=" + resetMask);
}
}
}
if (mNetConfigs[netType].isDefault()) {
handleApplyDefaultProxy(newLp.getHttpProxy());
}
} else {
if (VDBG) {
log("handleConnectivityChange: changed linkProperty[" + netType + "]:" +
" doReset=" + doReset + " resetMask=" + resetMask +
"\n curLp=" + curLp +
"\n newLp= null");
}
}
mCurrentLinkProperties[netType] = newLp;
boolean resetDns = updateRoutes(newLp, curLp, mNetConfigs[netType].isDefault(), exempt);
if (resetMask != 0 || resetDns) {
if (VDBG) log("handleConnectivityChange: resetting");
if (curLp != null) {
if (VDBG) log("handleConnectivityChange: resetting curLp=" + curLp);
for (String iface : curLp.getAllInterfaceNames()) {
if (TextUtils.isEmpty(iface) == false) {
if (resetMask != 0) {
if (DBG) log("resetConnections(" + iface + ", " + resetMask + ")");
NetworkUtils.resetConnections(iface, resetMask);
// Tell VPN the interface is down. It is a temporary
// but effective fix to make VPN aware of the change.
if ((resetMask & NetworkUtils.RESET_IPV4_ADDRESSES) != 0) {
synchronized(mVpns) {
for (int i = 0; i < mVpns.size(); i++) {
mVpns.valueAt(i).interfaceStatusChanged(iface, false);
}
}
}
}
if (resetDns) {
flushVmDnsCache();
if (VDBG) log("resetting DNS cache for " + iface);
try {
mNetd.flushInterfaceDnsCache(iface);
} catch (Exception e) {
// never crash - catch them all
if (DBG) loge("Exception resetting dns cache: " + e);
}
}
} else {
loge("Can't reset connection for type "+netType);
}
}
}
}
// Update 464xlat state.
NetworkStateTracker tracker = mNetTrackers[netType];
if (mClat.requiresClat(netType, tracker)) {
// If the connection was previously using clat, but is not using it now, stop the clat
// daemon. Normally, this happens automatically when the connection disconnects, but if
// the disconnect is not reported, or if the connection's LinkProperties changed for
// some other reason (e.g., handoff changes the IP addresses on the link), it would
// still be running. If it's not running, then stopping it is a no-op.
if (Nat464Xlat.isRunningClat(curLp) && !Nat464Xlat.isRunningClat(newLp)) {
mClat.stopClat();
}
// If the link requires clat to be running, then start the daemon now.
if (mNetTrackers[netType].getNetworkInfo().isConnected()) {
mClat.startClat(tracker);
} else {
mClat.stopClat();
}
}
// TODO: Temporary notifying upstread change to Tethering.
// @see bug/4455071
/** Notify TetheringService if interface name has been changed. */
if (TextUtils.equals(mNetTrackers[netType].getNetworkInfo().getReason(),
PhoneConstants.REASON_LINK_PROPERTIES_CHANGED)) {
if (isTetheringSupported()) {
mTethering.handleTetherIfaceChange();
}
}
}
/**
* Add and remove routes using the old properties (null if not previously connected),
* new properties (null if becoming disconnected). May even be double null, which
* is a noop.
* Uses isLinkDefault to determine if default routes should be set or conversely if
* host routes should be set to the dns servers
* returns a boolean indicating the routes changed
*/
private boolean updateRoutes(LinkProperties newLp, LinkProperties curLp,
boolean isLinkDefault, boolean exempt) {
Collection<RouteInfo> routesToAdd = null;
CompareResult<InetAddress> dnsDiff = new CompareResult<InetAddress>();
CompareResult<RouteInfo> routeDiff = new CompareResult<RouteInfo>();
if (curLp != null) {
// check for the delta between the current set and the new
routeDiff = curLp.compareAllRoutes(newLp);
dnsDiff = curLp.compareDnses(newLp);
} else if (newLp != null) {
routeDiff.added = newLp.getAllRoutes();
dnsDiff.added = newLp.getDnses();
}
boolean routesChanged = (routeDiff.removed.size() != 0 || routeDiff.added.size() != 0);
for (RouteInfo r : routeDiff.removed) {
if (isLinkDefault || ! r.isDefaultRoute()) {
if (VDBG) log("updateRoutes: default remove route r=" + r);
removeRoute(curLp, r, TO_DEFAULT_TABLE);
}
if (isLinkDefault == false) {
// remove from a secondary route table
removeRoute(curLp, r, TO_SECONDARY_TABLE);
}
}
if (!isLinkDefault) {
// handle DNS routes
if (routesChanged) {
// routes changed - remove all old dns entries and add new
if (curLp != null) {
for (InetAddress oldDns : curLp.getDnses()) {
removeRouteToAddress(curLp, oldDns);
}
}
if (newLp != null) {
for (InetAddress newDns : newLp.getDnses()) {
addRouteToAddress(newLp, newDns, exempt);
}
}
} else {
// no change in routes, check for change in dns themselves
for (InetAddress oldDns : dnsDiff.removed) {
removeRouteToAddress(curLp, oldDns);
}
for (InetAddress newDns : dnsDiff.added) {
addRouteToAddress(newLp, newDns, exempt);
}
}
}
for (RouteInfo r : routeDiff.added) {
if (isLinkDefault || ! r.isDefaultRoute()) {
addRoute(newLp, r, TO_DEFAULT_TABLE, exempt);
} else {
// add to a secondary route table
addRoute(newLp, r, TO_SECONDARY_TABLE, UNEXEMPT);
// many radios add a default route even when we don't want one.
// remove the default route unless somebody else has asked for it
String ifaceName = newLp.getInterfaceName();
synchronized (mRoutesLock) {
if (!TextUtils.isEmpty(ifaceName) && !mAddedRoutes.contains(r)) {
if (VDBG) log("Removing " + r + " for interface " + ifaceName);
try {
mNetd.removeRoute(ifaceName, r);
} catch (Exception e) {
// never crash - catch them all
if (DBG) loge("Exception trying to remove a route: " + e);
}
}
}
}
}
return routesChanged;
}
/**
* Reads the network specific MTU size from reources.
* and set it on it's iface.
*/
private void updateMtuSizeSettings(NetworkStateTracker nt) {
final String iface = nt.getLinkProperties().getInterfaceName();
final int mtu = nt.getLinkProperties().getMtu();
if (mtu < 68 || mtu > 10000) {
loge("Unexpected mtu value: " + nt);
return;
}
try {
if (VDBG) log("Setting MTU size: " + iface + ", " + mtu);
mNetd.setMtu(iface, mtu);
} catch (Exception e) {
Slog.e(TAG, "exception in setMtu()" + e);
}
}
/**
* Reads the network specific TCP buffer sizes from SystemProperties
* net.tcp.buffersize.[default|wifi|umts|edge|gprs] and set them for system
* wide use
*/
private void updateNetworkSettings(NetworkStateTracker nt) {
String key = nt.getTcpBufferSizesPropName();
String bufferSizes = key == null ? null : SystemProperties.get(key);
if (TextUtils.isEmpty(bufferSizes)) {
if (VDBG) log(key + " not found in system properties. Using defaults");
// Setting to default values so we won't be stuck to previous values
key = "net.tcp.buffersize.default";
bufferSizes = SystemProperties.get(key);
}
// Set values in kernel
if (bufferSizes.length() != 0) {
if (VDBG) {
log("Setting TCP values: [" + bufferSizes
+ "] which comes from [" + key + "]");
}
setBufferSize(bufferSizes);
}
}
/**
* Writes TCP buffer sizes to /sys/kernel/ipv4/tcp_[r/w]mem_[min/def/max]
* which maps to /proc/sys/net/ipv4/tcp_rmem and tcpwmem
*
* @param bufferSizes in the format of "readMin, readInitial, readMax,
* writeMin, writeInitial, writeMax"
*/
private void setBufferSize(String bufferSizes) {
try {
String[] values = bufferSizes.split(",");
if (values.length == 6) {
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]);
} else {
loge("Invalid buffersize string: " + bufferSizes);
}
} catch (IOException e) {
loge("Can't set tcp buffer sizes:" + e);
}
}
/**
* Adjust the per-process dns entries (net.dns<x>.<pid>) based
* on the highest priority active net which this process requested.
* If there aren't any, clear it out
*/
private void reassessPidDns(int pid, boolean doBump)
{
if (VDBG) log("reassessPidDns for pid " + pid);
Integer myPid = new Integer(pid);
for(int i : mPriorityList) {
if (mNetConfigs[i].isDefault()) {
continue;
}
NetworkStateTracker nt = mNetTrackers[i];
if (nt.getNetworkInfo().isConnected() &&
!nt.isTeardownRequested()) {
LinkProperties p = nt.getLinkProperties();
if (p == null) continue;
if (mNetRequestersPids[i].contains(myPid)) {
try {
mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid);
} catch (Exception e) {
Slog.e(TAG, "exception reasseses pid dns: " + e);
}
return;
}
}
}
// nothing found - delete
try {
mNetd.clearDnsInterfaceForPid(pid);
} catch (Exception e) {
Slog.e(TAG, "exception clear interface from pid: " + e);
}
}
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);
}
}
// Caller must grab mDnsLock.
private void updateDnsLocked(String network, String iface,
Collection<InetAddress> dnses, String domains, boolean defaultDns) {
int last = 0;
if (dnses.size() == 0 && mDefaultDns != null) {
dnses = new ArrayList();
dnses.add(mDefaultDns);
if (DBG) {
loge("no dns provided for " + network + " - using " + mDefaultDns.getHostAddress());
}
}
try {
mNetd.setDnsServersForInterface(iface, NetworkUtils.makeStrings(dnses), domains);
if (defaultDns) {
mNetd.setDefaultInterfaceForDns(iface);
}
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;
} catch (Exception e) {
loge("exception setting default dns interface: " + e);
}
}
private void handleDnsConfigurationChange(int netType) {
// add default net's dns entries
NetworkStateTracker nt = mNetTrackers[netType];
if (nt != null && nt.getNetworkInfo().isConnected() && !nt.isTeardownRequested()) {
LinkProperties p = nt.getLinkProperties();
if (p == null) return;
Collection<InetAddress> dnses = p.getDnses();
if (mNetConfigs[netType].isDefault()) {
String network = nt.getNetworkInfo().getTypeName();
synchronized (mDnsLock) {
updateDnsLocked(network, p.getInterfaceName(), dnses, p.getDomains(), true);
}
} else {
try {
mNetd.setDnsServersForInterface(p.getInterfaceName(),
NetworkUtils.makeStrings(dnses), p.getDomains());
} catch (Exception e) {
if (DBG) loge("exception setting dns servers: " + e);
}
// set per-pid dns for attached secondary nets
List<Integer> pids = mNetRequestersPids[netType];
for (Integer pid : pids) {
try {
mNetd.setDnsInterfaceForPid(p.getInterfaceName(), pid);
} catch (Exception e) {
Slog.e(TAG, "exception setting interface for pid: " + e);
}
}
}
flushVmDnsCache();
}
}
private 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;
}
// TODO: add locking to get atomic snapshot
pw.println();
for (int i = 0; i < mNetTrackers.length; i++) {
final NetworkStateTracker nst = mNetTrackers[i];
if (nst != null) {
pw.println("NetworkStateTracker for " + getNetworkTypeName(i) + ":");
pw.increaseIndent();
if (nst.getNetworkInfo().isConnected()) {
pw.println("Active network: " + nst.getNetworkInfo().
getTypeName());
}
pw.println(nst.getNetworkInfo());
pw.println(nst.getLinkProperties());
pw.println(nst);
pw.println();
pw.decreaseIndent();
}
}
pw.println("Network Requester Pids:");
pw.increaseIndent();
for (int net : mPriorityList) {
String pidString = net + ": ";
for (Integer pid : mNetRequestersPids[net]) {
pidString = pidString + pid.toString() + ", ";
}
pw.println(pidString);
}
pw.println();
pw.decreaseIndent();
pw.println("FeatureUsers:");
pw.increaseIndent();
for (Object requester : mFeatureUsers) {
pw.println(requester.toString());
}
pw.println();
pw.decreaseIndent();
synchronized (this) {
pw.println("NetworkTranstionWakeLock 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();
}
}
// 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 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());
}
// Since mobile has the notion of a network/apn that can be used for
// provisioning we need to check every time we're connected as
// CaptiveProtalTracker won't detected it because DCT doesn't report it
// as connected as ACTION_ANY_DATA_CONNECTION_STATE_CHANGED instead its
// reported as ACTION_DATA_CONNECTION_CONNECTED_TO_PROVISIONING_APN. Which
// is received by MDST and sent here as EVENT_STATE_CHANGED.
if (ConnectivityManager.isNetworkTypeMobile(info.getType())
&& (0 != Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.DEVICE_PROVISIONED, 0))
&& (((state == NetworkInfo.State.CONNECTED)
&& (info.getType() == ConnectivityManager.TYPE_MOBILE))
|| info.isConnectedToProvisioningNetwork())) {
log("ConnectivityChange checkMobileProvisioning for"
+ " TYPE_MOBILE or ProvisioningNetwork");
checkMobileProvisioning(CheckMp.MAX_TIMEOUT_MS);
}
EventLogTags.writeConnectivityStateChanged(
info.getType(), info.getSubtype(), info.getDetailedState().ordinal());
if (info.getDetailedState() ==
NetworkInfo.DetailedState.FAILED) {
handleConnectionFailure(info);
} else if (info.getDetailedState() ==
DetailedState.CAPTIVE_PORTAL_CHECK) {
handleCaptivePortalTrackerCheck(info);
} else 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 = getLinkProperties(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);
}
} else if (state == NetworkInfo.State.DISCONNECTED) {
handleDisconnect(info);
} else if (state == NetworkInfo.State.SUSPENDED) {
// TODO: need to think this over.
// the logic here is, handle SUSPENDED the same as
// DISCONNECTED. The only difference being we are
// broadcasting an intent with NetworkInfo that's
// suspended. This allows the applications an
// opportunity to handle DISCONNECTED and SUSPENDED
// differently, or not.
handleDisconnect(info);
} else if (state == NetworkInfo.State.CONNECTED) {
handleConnect(info);
}
if (mLockdownTracker != null) {
mLockdownTracker.onNetworkInfoChanged(info);
}
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(), false);
break;
}
case NetworkStateTracker.EVENT_NETWORK_SUBTYPE_CHANGED: {
info = (NetworkInfo) msg.obj;
int type = info.getType();
updateNetworkSettings(mNetTrackers[type]);
break;
}
}
}
}
private class InternalHandler extends Handler {
public InternalHandler(Looper looper) {
super(looper);
}
@Override
public void handleMessage(Message msg) {
NetworkInfo info;
switch (msg.what) {
case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: {
String causedBy = null;
synchronized (ConnectivityService.this) {
if (msg.arg1 == mNetTransitionWakeLockSerialNumber &&
mNetTransitionWakeLock.isHeld()) {
mNetTransitionWakeLock.release();
causedBy = mNetTransitionWakeLockCausedBy;
}
}
if (causedBy != null) {
log("NetTransition Wakelock for " + causedBy + " released by timeout");
}
break;
}
case EVENT_RESTORE_DEFAULT_NETWORK: {
FeatureUser u = (FeatureUser)msg.obj;
u.expire();
break;
}
case EVENT_INET_CONDITION_CHANGE: {
int netType = msg.arg1;
int condition = msg.arg2;
handleInetConditionChange(netType, condition);
break;
}
case EVENT_INET_CONDITION_HOLD_END: {
int netType = msg.arg1;
int sequence = msg.arg2;
handleInetConditionHoldEnd(netType, sequence);
break;
}
case EVENT_SET_NETWORK_PREFERENCE: {
int preference = msg.arg1;
handleSetNetworkPreference(preference);
break;
}
case EVENT_SET_MOBILE_DATA: {
boolean enabled = (msg.arg1 == ENABLED);
handleSetMobileData(enabled);
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_SET_POLICY_DATA_ENABLE: {
final int networkType = msg.arg1;
final boolean enabled = msg.arg2 == ENABLED;
handleSetPolicyDataEnable(networkType, enabled);
break;
}
case EVENT_VPN_STATE_CHANGED: {
if (mLockdownTracker != null) {
mLockdownTracker.onVpnStateChanged((NetworkInfo) msg.obj);
}
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((ProxyProperties)msg.obj);
break;
}
}
}
}
// javadoc from interface
public int tether(String iface) {
enforceTetherChangePermission();
if (isTetheringSupported()) {
return mTethering.tether(iface);
} else {
return ConnectivityManager.TETHER_ERROR_UNSUPPORTED;
}
}
// javadoc from interface
public int untether(String iface) {
enforceTetherChangePermission();
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) {
enforceTetherChangePermission();
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();
}
// 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);
return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 ||
mTethering.getTetherableWifiRegexs().length != 0 ||
mTethering.getTetherableBluetoothRegexs().length != 0) &&
mTethering.getUpstreamIfaceTypes().length != 0);
}
// An API NetworkStateTrackers can call when they lose their network.
// This will automatically be cleared after X seconds or a network becomes CONNECTED,
// whichever happens first. The timer is started by the first caller and not
// restarted by subsequent callers.
public void requestNetworkTransitionWakelock(String forWhom) {
enforceConnectivityInternalPermission();
synchronized (this) {
if (mNetTransitionWakeLock.isHeld()) return;
mNetTransitionWakeLockSerialNumber++;
mNetTransitionWakeLock.acquire();
mNetTransitionWakeLockCausedBy = forWhom;
}
mHandler.sendMessageDelayed(mHandler.obtainMessage(
EVENT_CLEAR_NET_TRANSITION_WAKELOCK,
mNetTransitionWakeLockSerialNumber, 0),
mNetTransitionWakeLockTimeout);
return;
}
// 100 percent is full good, 0 is full bad.
public void reportInetCondition(int networkType, int percentage) {
if (VDBG) log("reportNetworkCondition(" + networkType + ", " + percentage + ")");
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.STATUS_BAR,
"ConnectivityService");
if (DBG) {
int pid = getCallingPid();
int uid = getCallingUid();
String s = pid + "(" + uid + ") reports inet is " +
(percentage > 50 ? "connected" : "disconnected") + " (" + percentage + ") on " +
"network Type " + networkType + " at " + GregorianCalendar.getInstance().getTime();
mInetLog.add(s);
while(mInetLog.size() > INET_CONDITION_LOG_MAX_SIZE) {
mInetLog.remove(0);
}
}
mHandler.sendMessage(mHandler.obtainMessage(
EVENT_INET_CONDITION_CHANGE, networkType, percentage));
}
private void handleInetConditionChange(int netType, int condition) {
if (mActiveDefaultNetwork == -1) {
if (DBG) log("handleInetConditionChange: no active default network - ignore");
return;
}
if (mActiveDefaultNetwork != netType) {
if (DBG) log("handleInetConditionChange: net=" + netType +
" != default=" + mActiveDefaultNetwork + " - ignore");
return;
}
if (VDBG) {
log("handleInetConditionChange: net=" +
netType + ", condition=" + condition +
",mActiveDefaultNetwork=" + mActiveDefaultNetwork);
}
mDefaultInetCondition = condition;
int delay;
if (mInetConditionChangeInFlight == false) {
if (VDBG) log("handleInetConditionChange: starting a change hold");
// setup a new hold to debounce this
if (mDefaultInetCondition > 50) {
delay = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.INET_CONDITION_DEBOUNCE_UP_DELAY, 500);
} else {
delay = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.INET_CONDITION_DEBOUNCE_DOWN_DELAY, 3000);
}
mInetConditionChangeInFlight = true;
mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_INET_CONDITION_HOLD_END,
mActiveDefaultNetwork, mDefaultConnectionSequence), delay);
} else {
// we've set the new condition, when this hold ends that will get picked up
if (VDBG) log("handleInetConditionChange: currently in hold - not setting new end evt");
}
}
private void handleInetConditionHoldEnd(int netType, int sequence) {
if (DBG) {
log("handleInetConditionHoldEnd: net=" + netType +
", condition=" + mDefaultInetCondition +
", published condition=" + mDefaultInetConditionPublished);
}
mInetConditionChangeInFlight = false;
if (mActiveDefaultNetwork == -1) {
if (DBG) log("handleInetConditionHoldEnd: no active default network - ignoring");
return;
}
if (mDefaultConnectionSequence != sequence) {
if (DBG) log("handleInetConditionHoldEnd: event hold for obsolete network - ignoring");
return;
}
// TODO: Figure out why this optimization sometimes causes a
// change in mDefaultInetCondition to be missed and the
// UI to not be updated.
//if (mDefaultInetConditionPublished == mDefaultInetCondition) {
// if (DBG) log("no change in condition - aborting");
// return;
//}
NetworkInfo networkInfo = mNetTrackers[mActiveDefaultNetwork].getNetworkInfo();
if (networkInfo.isConnected() == false) {
if (DBG) log("handleInetConditionHoldEnd: default network not connected - ignoring");
return;
}
mDefaultInetConditionPublished = mDefaultInetCondition;
sendInetConditionBroadcast(networkInfo);
return;
}
public ProxyProperties getProxy() {
// 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) {
ProxyProperties ret = mGlobalProxy;
if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy;
return ret;
}
}
public void setGlobalProxy(ProxyProperties 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()) ||
!TextUtils.isEmpty(proxyProperties.getPacFileUrl()))) {
mGlobalProxy = new ProxyProperties(proxyProperties);
host = mGlobalProxy.getHost();
port = mGlobalProxy.getPort();
exclList = mGlobalProxy.getExclusionList();
if (proxyProperties.getPacFileUrl() != null) {
pacFileUrl = proxyProperties.getPacFileUrl();
}
} 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)) {
ProxyProperties proxyProperties;
if (!TextUtils.isEmpty(pacFileUrl)) {
proxyProperties = new ProxyProperties(pacFileUrl);
} else {
proxyProperties = new ProxyProperties(host, port, exclList);
}
synchronized (mProxyLock) {
mGlobalProxy = proxyProperties;
}
}
}
public ProxyProperties 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(ProxyProperties proxy) {
if (proxy != null && TextUtils.isEmpty(proxy.getHost())
&& TextUtils.isEmpty(proxy.getPacFileUrl())) {
proxy = null;
}
synchronized (mProxyLock) {
if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return;
if (mDefaultProxy == proxy) return; // catches repeated nulls
mDefaultProxy = proxy;
if (mGlobalProxy != null) return;
if (!mDefaultProxyDisabled) {
sendProxyBroadcast(proxy);
}
}
}
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;
}
}
ProxyProperties p = new ProxyProperties(data[0], proxyPort, "");
setGlobalProxy(p);
}
}
private void sendProxyBroadcast(ProxyProperties proxy) {
if (proxy == null) proxy = new ProxyProperties("", 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);
}
int convertFeatureToNetworkType(int networkType, String feature) {
int usedNetworkType = networkType;
if(networkType == ConnectivityManager.TYPE_MOBILE) {
if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_MMS)) {
usedNetworkType = ConnectivityManager.TYPE_MOBILE_MMS;
} else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_SUPL)) {
usedNetworkType = ConnectivityManager.TYPE_MOBILE_SUPL;
} else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN) ||
TextUtils.equals(feature, Phone.FEATURE_ENABLE_DUN_ALWAYS)) {
usedNetworkType = ConnectivityManager.TYPE_MOBILE_DUN;
} else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_HIPRI)) {
usedNetworkType = ConnectivityManager.TYPE_MOBILE_HIPRI;
} else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_FOTA)) {
usedNetworkType = ConnectivityManager.TYPE_MOBILE_FOTA;
} else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_IMS)) {
usedNetworkType = ConnectivityManager.TYPE_MOBILE_IMS;
} else if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_CBS)) {
usedNetworkType = ConnectivityManager.TYPE_MOBILE_CBS;
} else {
Slog.e(TAG, "Can't match any mobile netTracker!");
}
} else if (networkType == ConnectivityManager.TYPE_WIFI) {
if (TextUtils.equals(feature, "p2p")) {
usedNetworkType = ConnectivityManager.TYPE_WIFI_P2P;
} else {
Slog.e(TAG, "Can't match any wifi netTracker!");
}
} else {
Slog.e(TAG, "Unexpected network type");
}
return usedNetworkType;
}
private static <T> T checkNotNull(T value, String message) {
if (value == null) {
throw new NullPointerException(message);
}
return value;
}
/**
* Protect a socket from VPN routing rules. This method is used by
* VpnBuilder and not available in ConnectivityManager. Permissions
* are checked in Vpn class.
* @hide
*/
@Override
public boolean protectVpn(ParcelFileDescriptor socket) {
throwIfLockdownEnabled();
try {
int type = mActiveDefaultNetwork;
int user = UserHandle.getUserId(Binder.getCallingUid());
if (ConnectivityManager.isNetworkTypeValid(type) && mNetTrackers[type] != null) {
synchronized(mVpns) {
mVpns.get(user).protect(socket,
mNetTrackers[type].getLinkProperties().getInterfaceName());
}
return true;
}
} catch (Exception e) {
// ignore
} finally {
try {
socket.close();
} catch (Exception e) {
// ignore
}
}
return false;
}
/**
* Prepare for a VPN application. This method is used by VpnDialogs
* and not available in ConnectivityManager. 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);
}
}
@Override
public void markSocketAsUser(ParcelFileDescriptor socket, int uid) {
enforceMarkNetworkSocketPermission();
final long token = Binder.clearCallingIdentity();
try {
int mark = mNetd.getMarkForUid(uid);
// Clear the mark on the socket if no mark is needed to prevent socket reuse issues
if (mark == -1) {
mark = 0;
}
NetworkUtils.markSocket(socket.getFd(), mark);
} catch (RemoteException e) {
} finally {
Binder.restoreCallingIdentity(token);
}
}
/**
* 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();
}
}
/**
* Callback for VPN subsystem. Currently VPN is not adapted to the service
* through NetworkStateTracker since it works differently. For example, it
* needs to override DNS servers but never takes the default routes. It
* relies on another data network, and it could keep existing connections
* alive after reconnecting, switching between networks, or even resuming
* from deep sleep. Calls from applications should be done synchronously
* to avoid race conditions. As these are all hidden APIs, refactoring can
* be done whenever a better abstraction is developed.
*/
public class VpnCallback {
private VpnCallback() {
}
public void onStateChanged(NetworkInfo info) {
mHandler.obtainMessage(EVENT_VPN_STATE_CHANGED, info).sendToTarget();
}
public void override(String iface, List<String> dnsServers, List<String> searchDomains) {
if (dnsServers == null) {
restore();
return;
}
// Convert DNS servers into addresses.
List<InetAddress> addresses = new ArrayList<InetAddress>();
for (String address : dnsServers) {
// Double check the addresses and remove invalid ones.
try {
addresses.add(InetAddress.parseNumericAddress(address));
} catch (Exception e) {
// ignore
}
}
if (addresses.isEmpty()) {
restore();
return;
}
// Concatenate search domains into a string.
StringBuilder buffer = new StringBuilder();
if (searchDomains != null) {
for (String domain : searchDomains) {
buffer.append(domain).append(' ');
}
}
String domains = buffer.toString().trim();
// Apply DNS changes.
synchronized (mDnsLock) {
updateDnsLocked("VPN", iface, addresses, domains, false);
}
// Temporarily disable the default proxy (not global).
synchronized (mProxyLock) {
mDefaultProxyDisabled = true;
if (mGlobalProxy == null && mDefaultProxy != null) {
sendProxyBroadcast(null);
}
}
// TODO: support proxy per network.
}
public void restore() {
synchronized (mProxyLock) {
mDefaultProxyDisabled = false;
if (mGlobalProxy == null && mDefaultProxy != null) {
sendProxyBroadcast(mDefaultProxy);
}
}
}
public void protect(ParcelFileDescriptor socket) {
try {
final int mark = mNetd.getMarkForProtect();
NetworkUtils.markSocket(socket.getFd(), mark);
} catch (RemoteException e) {
}
}
public void setRoutes(String interfaze, List<RouteInfo> routes) {
for (RouteInfo route : routes) {
try {
mNetd.setMarkedForwardingRoute(interfaze, route);
} catch (RemoteException e) {
}
}
}
public void setMarkedForwarding(String interfaze) {
try {
mNetd.setMarkedForwarding(interfaze);
} catch (RemoteException e) {
}
}
public void clearMarkedForwarding(String interfaze) {
try {
mNetd.clearMarkedForwarding(interfaze);
} catch (RemoteException e) {
}
}
public void addUserForwarding(String interfaze, int uid, boolean forwardDns) {
int uidStart = uid * UserHandle.PER_USER_RANGE;
int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1;
addUidForwarding(interfaze, uidStart, uidEnd, forwardDns);
}
public void clearUserForwarding(String interfaze, int uid, boolean forwardDns) {
int uidStart = uid * UserHandle.PER_USER_RANGE;
int uidEnd = uidStart + UserHandle.PER_USER_RANGE - 1;
clearUidForwarding(interfaze, uidStart, uidEnd, forwardDns);
}
public void addUidForwarding(String interfaze, int uidStart, int uidEnd,
boolean forwardDns) {
try {
mNetd.setUidRangeRoute(interfaze,uidStart, uidEnd);
if (forwardDns) mNetd.setDnsInterfaceForUidRange(interfaze, uidStart, uidEnd);
} catch (RemoteException e) {
}
}
public void clearUidForwarding(String interfaze, int uidStart, int uidEnd,
boolean forwardDns) {
try {
mNetd.clearUidRangeRoute(interfaze, uidStart, uidEnd);
if (forwardDns) mNetd.clearDnsInterfaceForUidRange(uidStart, uidEnd);
} catch (RemoteException e) {
}
}
}
@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;
for (NetworkStateTracker tracker : mNetTrackers) {
if (tracker != null) {
LinkProperties lp = tracker.getLinkProperties();
if (lp != null && iface.equals(lp.getInterfaceName())) {
return tracker.getNetworkInfo().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));
}
private boolean isMobileDataStateTrackerReady() {
MobileDataStateTracker mdst =
(MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI];
return (mdst != null) && (mdst.isReady());
}
/**
* The ResultReceiver resultCode for checkMobileProvisioning (CMP_RESULT_CODE)
*/
/**
* No connection was possible to the network.
* This is NOT a warm sim.
*/
private static final int CMP_RESULT_CODE_NO_CONNECTION = 0;
/**
* A connection was made to the internet, all is well.
* This is NOT a warm sim.
*/
private static final int CMP_RESULT_CODE_CONNECTABLE = 1;
/**
* A connection was made but no dns server was available to resolve a name to address.
* This is NOT a warm sim since provisioning network is supported.
*/
private static final int CMP_RESULT_CODE_NO_DNS = 2;
/**
* A connection was made but could not open a TCP connection.
* This is NOT a warm sim since provisioning network is supported.
*/
private static final int CMP_RESULT_CODE_NO_TCP_CONNECTION = 3;
/**
* A connection was made but there was a redirection, we appear to be in walled garden.
* This is an indication of a warm sim on a mobile network such as T-Mobile.
*/
private static final int CMP_RESULT_CODE_REDIRECTED = 4;
/**
* The mobile network is a provisioning network.
* This is an indication of a warm sim on a mobile network such as AT&T.
*/
private static final int CMP_RESULT_CODE_PROVISIONING_NETWORK = 5;
private AtomicBoolean mIsCheckingMobileProvisioning = new AtomicBoolean(false);
@Override
public int checkMobileProvisioning(int suggestedTimeOutMs) {
int timeOutMs = -1;
if (DBG) log("checkMobileProvisioning: E suggestedTimeOutMs=" + suggestedTimeOutMs);
enforceConnectivityInternalPermission();
final long token = Binder.clearCallingIdentity();
try {
timeOutMs = suggestedTimeOutMs;
if (suggestedTimeOutMs > CheckMp.MAX_TIMEOUT_MS) {
timeOutMs = CheckMp.MAX_TIMEOUT_MS;
}
// Check that mobile networks are supported
if (!isNetworkSupported(ConnectivityManager.TYPE_MOBILE)
|| !isNetworkSupported(ConnectivityManager.TYPE_MOBILE_HIPRI)) {
if (DBG) log("checkMobileProvisioning: X no mobile network");
return timeOutMs;
}
// If we're already checking don't do it again
// TODO: Add a queue of results...
if (mIsCheckingMobileProvisioning.getAndSet(true)) {
if (DBG) log("checkMobileProvisioning: X already checking ignore for the moment");
return timeOutMs;
}
// Start off with mobile notification off
setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null);
CheckMp checkMp = new CheckMp(mContext, this);
CheckMp.CallBack cb = new CheckMp.CallBack() {
@Override
void onComplete(Integer result) {
if (DBG) log("CheckMp.onComplete: result=" + result);
NetworkInfo ni =
mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI].getNetworkInfo();
switch(result) {
case CMP_RESULT_CODE_CONNECTABLE:
case CMP_RESULT_CODE_NO_CONNECTION:
case CMP_RESULT_CODE_NO_DNS:
case CMP_RESULT_CODE_NO_TCP_CONNECTION: {
if (DBG) log("CheckMp.onComplete: ignore, connected or no connection");
break;
}
case CMP_RESULT_CODE_REDIRECTED: {
if (DBG) log("CheckMp.onComplete: warm sim");
String url = getMobileProvisioningUrl();
if (TextUtils.isEmpty(url)) {
url = getMobileRedirectedProvisioningUrl();
}
if (TextUtils.isEmpty(url) == false) {
if (DBG) log("CheckMp.onComplete: warm (redirected), url=" + url);
setProvNotificationVisible(true,
ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(),
url);
} else {
if (DBG) log("CheckMp.onComplete: warm (redirected), no url");
}
break;
}
case CMP_RESULT_CODE_PROVISIONING_NETWORK: {
String url = getMobileProvisioningUrl();
if (TextUtils.isEmpty(url) == false) {
if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), url=" + url);
setProvNotificationVisible(true,
ConnectivityManager.TYPE_MOBILE_HIPRI, ni.getExtraInfo(),
url);
} else {
if (DBG) log("CheckMp.onComplete: warm (no dns/tcp), no url");
}
break;
}
default: {
loge("CheckMp.onComplete: ignore unexpected result=" + result);
break;
}
}
mIsCheckingMobileProvisioning.set(false);
}
};
CheckMp.Params params =
new CheckMp.Params(checkMp.getDefaultUrl(), timeOutMs, cb);
if (DBG) log("checkMobileProvisioning: params=" + params);
checkMp.execute(params);
} finally {
Binder.restoreCallingIdentity(token);
if (DBG) log("checkMobileProvisioning: X");
}
return timeOutMs;
}
static class CheckMp extends
AsyncTask<CheckMp.Params, Void, Integer> {
private static final String CHECKMP_TAG = "CheckMp";
public static final int MAX_TIMEOUT_MS = 60000;
private static final int SOCKET_TIMEOUT_MS = 5000;
private Context mContext;
private ConnectivityService mCs;
private TelephonyManager mTm;
private Params mParams;
/**
* Parameters for AsyncTask.execute
*/
static class Params {
private String mUrl;
private long mTimeOutMs;
private CallBack mCb;
Params(String url, long timeOutMs, CallBack cb) {
mUrl = url;
mTimeOutMs = timeOutMs;
mCb = cb;
}
@Override
public String toString() {
return "{" + " url=" + mUrl + " mTimeOutMs=" + mTimeOutMs + " mCb=" + mCb + "}";
}
}
/**
* The call back object passed in Params. onComplete will be called
* on the main thread.
*/
abstract static class CallBack {
// Called on the main thread.
abstract void onComplete(Integer result);
}
public CheckMp(Context context, ConnectivityService cs) {
mContext = context;
mCs = cs;
// Setup access to TelephonyService we'll be using.
mTm = (TelephonyManager) mContext.getSystemService(
Context.TELEPHONY_SERVICE);
}
/**
* Get the default url to use for the test.
*/
public String getDefaultUrl() {
// See http://go/clientsdns for usage approval
String server = Settings.Global.getString(mContext.getContentResolver(),
Settings.Global.CAPTIVE_PORTAL_SERVER);
if (server == null) {
server = "clients3.google.com";
}
return "http://" + server + "/generate_204";
}
/**
* Detect if its possible to connect to the http url. DNS based detection techniques
* do not work at all hotspots. The best way to check is to perform a request to
* a known address that fetches the data we expect.
*/
private synchronized Integer isMobileOk(Params params) {
Integer result = CMP_RESULT_CODE_NO_CONNECTION;
Uri orgUri = Uri.parse(params.mUrl);
Random rand = new Random();
mParams = params;
if (mCs.isNetworkSupported(ConnectivityManager.TYPE_MOBILE) == false) {
result = CMP_RESULT_CODE_NO_CONNECTION;
log("isMobileOk: X not mobile capable result=" + result);
return result;
}
// See if we've already determined we've got a provisioning connection,
// if so we don't need to do anything active.
MobileDataStateTracker mdstDefault = (MobileDataStateTracker)
mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE];
boolean isDefaultProvisioning = mdstDefault.isProvisioningNetwork();
log("isMobileOk: isDefaultProvisioning=" + isDefaultProvisioning);
MobileDataStateTracker mdstHipri = (MobileDataStateTracker)
mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI];
boolean isHipriProvisioning = mdstHipri.isProvisioningNetwork();
log("isMobileOk: isHipriProvisioning=" + isHipriProvisioning);
if (isDefaultProvisioning || isHipriProvisioning) {
result = CMP_RESULT_CODE_PROVISIONING_NETWORK;
log("isMobileOk: X default || hipri is provisioning result=" + result);
return result;
}
try {
// Continue trying to connect until time has run out
long endTime = SystemClock.elapsedRealtime() + params.mTimeOutMs;
if (!mCs.isMobileDataStateTrackerReady()) {
// Wait for MobileDataStateTracker to be ready.
if (DBG) log("isMobileOk: mdst is not ready");
while(SystemClock.elapsedRealtime() < endTime) {
if (mCs.isMobileDataStateTrackerReady()) {
// Enable fail fast as we'll do retries here and use a
// hipri connection so the default connection stays active.
if (DBG) log("isMobileOk: mdst ready, enable fail fast of mobile data");
mCs.setEnableFailFastMobileData(DctConstants.ENABLED);
break;
}
sleep(1);
}
}
log("isMobileOk: start hipri url=" + params.mUrl);
// First wait until we can start using hipri
Binder binder = new Binder();
while(SystemClock.elapsedRealtime() < endTime) {
int ret = mCs.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
Phone.FEATURE_ENABLE_HIPRI, binder);
if ((ret == PhoneConstants.APN_ALREADY_ACTIVE)
|| (ret == PhoneConstants.APN_REQUEST_STARTED)) {
log("isMobileOk: hipri started");
break;
}
if (VDBG) log("isMobileOk: hipri not started yet");
result = CMP_RESULT_CODE_NO_CONNECTION;
sleep(1);
}
// Continue trying to connect until time has run out
while(SystemClock.elapsedRealtime() < endTime) {
try {
// Wait for hipri to connect.
// TODO: Don't poll and handle situation where hipri fails
// because default is retrying. See b/9569540
NetworkInfo.State state = mCs
.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState();
if (state != NetworkInfo.State.CONNECTED) {
if (true/*VDBG*/) {
log("isMobileOk: not connected ni=" +
mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI));
}
sleep(1);
result = CMP_RESULT_CODE_NO_CONNECTION;
continue;
}
// Hipri has started check if this is a provisioning url
MobileDataStateTracker mdst = (MobileDataStateTracker)
mCs.mNetTrackers[ConnectivityManager.TYPE_MOBILE_HIPRI];
if (mdst.isProvisioningNetwork()) {
result = CMP_RESULT_CODE_PROVISIONING_NETWORK;
if (DBG) log("isMobileOk: X isProvisioningNetwork result=" + result);
return result;
} else {
if (DBG) log("isMobileOk: isProvisioningNetwork is false, continue");
}
// Get of the addresses associated with the url host. We need to use the
// address otherwise HttpURLConnection object will use the name to get
// the addresses and is will try every address but that will bypass the
// route to host we setup and the connection could succeed as the default
// interface might be connected to the internet via wifi or other interface.
InetAddress[] addresses;
try {
addresses = InetAddress.getAllByName(orgUri.getHost());
} catch (UnknownHostException e) {
result = CMP_RESULT_CODE_NO_DNS;
log("isMobileOk: X UnknownHostException result=" + result);
return result;
}
log("isMobileOk: addresses=" + inetAddressesToString(addresses));
// Get the type of addresses supported by this link
LinkProperties lp = mCs.getLinkProperties(
ConnectivityManager.TYPE_MOBILE_HIPRI);
boolean linkHasIpv4 = lp.hasIPv4Address();
boolean linkHasIpv6 = lp.hasIPv6Address();
log("isMobileOk: linkHasIpv4=" + linkHasIpv4
+ " linkHasIpv6=" + linkHasIpv6);
final ArrayList<InetAddress> validAddresses =
new ArrayList<InetAddress>(addresses.length);
for (InetAddress addr : addresses) {
if (((addr instanceof Inet4Address) && linkHasIpv4) ||
((addr instanceof Inet6Address) && linkHasIpv6)) {
validAddresses.add(addr);
}
}
if (validAddresses.size() == 0) {
return CMP_RESULT_CODE_NO_CONNECTION;
}
int addrTried = 0;
while (true) {
// Loop through at most 3 valid addresses or until
// we run out of time
if (addrTried++ >= 3) {
log("too many loops tried - giving up");
break;
}
if (SystemClock.elapsedRealtime() >= endTime) {
log("spend too much time - giving up");
break;
}
InetAddress hostAddr = validAddresses.get(rand.nextInt(
validAddresses.size()));
// Make a route to host so we check the specific interface.
if (mCs.requestRouteToHostAddress(ConnectivityManager.TYPE_MOBILE_HIPRI,
hostAddr.getAddress())) {
// Wait a short time to be sure the route is established ??
log("isMobileOk:"
+ " wait to establish route to hostAddr=" + hostAddr);
sleep(3);
} else {
log("isMobileOk:"
+ " could not establish route to hostAddr=" + hostAddr);
continue;
}
// Rewrite the url to have numeric address to use the specific route.
// Add a pointless random query param to fool proxies into not caching.
URL newUrl = new URL(orgUri.getScheme(),
hostAddr.getHostAddress(),
orgUri.getPath() + "?q=" + rand.nextInt(Integer.MAX_VALUE));
log("isMobileOk: newUrl=" + newUrl);
HttpURLConnection urlConn = null;
try {
// Open the connection set the request header and get the response
urlConn = (HttpURLConnection) newUrl.openConnection(
java.net.Proxy.NO_PROXY);
urlConn.setInstanceFollowRedirects(false);
urlConn.setConnectTimeout(SOCKET_TIMEOUT_MS);
urlConn.setReadTimeout(SOCKET_TIMEOUT_MS);
urlConn.setUseCaches(false);
urlConn.setAllowUserInteraction(false);
// Set the "Connection" to "Close" as by default "Keep-Alive"
// is used which is useless in this case.
urlConn.setRequestProperty("Connection", "close");
int responseCode = urlConn.getResponseCode();
// For debug display the headers
Map<String, List<String>> headers = urlConn.getHeaderFields();
log("isMobileOk: headers=" + headers);
// Close the connection
urlConn.disconnect();
urlConn = null;
if (responseCode == 204) {
// Return
result = CMP_RESULT_CODE_CONNECTABLE;
log("isMobileOk: X expected responseCode=" + responseCode
+ " result=" + result);
return result;
} else {
// Retry to be sure this was redirected, we've gotten
// occasions where a server returned 200 even though
// the device didn't have a "warm" sim.
log("isMobileOk: not expected responseCode=" + responseCode);
// TODO - it would be nice in the single-address case to do
// another DNS resolve here, but flushing the cache is a bit
// heavy-handed.
result = CMP_RESULT_CODE_REDIRECTED;
}
} catch (Exception e) {
log("isMobileOk: HttpURLConnection Exception e=" + e);
result = CMP_RESULT_CODE_NO_TCP_CONNECTION;
if (urlConn != null) {
urlConn.disconnect();
urlConn = null;
}
}
}
log("isMobileOk: X loops|timed out result=" + result);
return result;
} catch (Exception e) {
log("isMobileOk: Exception e=" + e);
continue;
}
}
log("isMobileOk: timed out");
} finally {
log("isMobileOk: F stop hipri");
mCs.setEnableFailFastMobileData(DctConstants.DISABLED);
mCs.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
Phone.FEATURE_ENABLE_HIPRI);
// Wait for hipri to disconnect.
long endTime = SystemClock.elapsedRealtime() + 5000;
while(SystemClock.elapsedRealtime() < endTime) {
NetworkInfo.State state = mCs
.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI).getState();
if (state != NetworkInfo.State.DISCONNECTED) {
if (VDBG) {
log("isMobileOk: connected ni=" +
mCs.getNetworkInfo(ConnectivityManager.TYPE_MOBILE_HIPRI));
}
sleep(1);
continue;
}
}
log("isMobileOk: X result=" + result);
}
return result;
}
@Override
protected Integer doInBackground(Params... params) {
return isMobileOk(params[0]);
}
@Override
protected void onPostExecute(Integer result) {
log("onPostExecute: result=" + result);
if ((mParams != null) && (mParams.mCb != null)) {
mParams.mCb.onComplete(result);
}
}
private String inetAddressesToString(InetAddress[] addresses) {
StringBuffer sb = new StringBuffer();
boolean firstTime = true;
for(InetAddress addr : addresses) {
if (firstTime) {
firstTime = false;
} else {
sb.append(",");
}
sb.append(addr);
}
return sb.toString();
}
private void printNetworkInfo() {
boolean hasIccCard = mTm.hasIccCard();
int simState = mTm.getSimState();
log("hasIccCard=" + hasIccCard
+ " simState=" + simState);
NetworkInfo[] ni = mCs.getAllNetworkInfo();
if (ni != null) {
log("ni.length=" + ni.length);
for (NetworkInfo netInfo: ni) {
log("netInfo=" + netInfo.toString());
}
} else {
log("no network info ni=null");
}
}
/**
* Sleep for a few seconds then return.
* @param seconds
*/
private static void sleep(int seconds) {
try {
Thread.sleep(seconds * 1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private void log(String s) {
Slog.d(ConnectivityService.TAG, "[" + CHECKMP_TAG + "] " + s);
}
}
// TODO: Move to ConnectivityManager and make public?
private static final String CONNECTED_TO_PROVISIONING_NETWORK_ACTION =
"com.android.server.connectivityservice.CONNECTED_TO_PROVISIONING_NETWORK_ACTION";
private BroadcastReceiver mProvisioningReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(CONNECTED_TO_PROVISIONING_NETWORK_ACTION)) {
handleMobileProvisioningAction(intent.getStringExtra("EXTRA_URL"));
}
}
};
private void handleMobileProvisioningAction(String url) {
// Notication mark notification as not visible
setProvNotificationVisible(false, ConnectivityManager.TYPE_MOBILE_HIPRI, null, null);
// If provisioning network handle as a special case,
// otherwise launch browser with the intent directly.
NetworkInfo ni = getProvisioningNetworkInfo();
if ((ni != null) && ni.isConnectedToProvisioningNetwork()) {
if (DBG) log("handleMobileProvisioningAction: on provisioning network");
MobileDataStateTracker mdst = (MobileDataStateTracker)
mNetTrackers[ConnectivityManager.TYPE_MOBILE];
mdst.enableMobileProvisioning(url);
} else {
if (DBG) log("handleMobileProvisioningAction: on default network");
Intent newIntent = Intent.makeMainSelectorActivity(Intent.ACTION_MAIN,
Intent.CATEGORY_APP_BROWSER);
newIntent.setData(Uri.parse(url));
newIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
Intent.FLAG_ACTIVITY_NEW_TASK);
try {
mContext.startActivity(newIntent);
} catch (ActivityNotFoundException e) {
loge("handleMobileProvisioningAction: startActivity failed" + e);
}
}
}
private static final String NOTIFICATION_ID = "CaptivePortal.Notification";
private volatile boolean mIsNotificationVisible = false;
private void setProvNotificationVisible(boolean visible, int networkType, String extraInfo,
String url) {
if (DBG) {
log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType
+ " extraInfo=" + extraInfo + " url=" + url);
}
Resources r = Resources.getSystem();
NotificationManager notificationManager = (NotificationManager) mContext
.getSystemService(Context.NOTIFICATION_SERVICE);
if (visible) {
CharSequence title;
CharSequence details;
int icon;
Intent intent;
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;
intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
Intent.FLAG_ACTIVITY_NEW_TASK);
notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0);
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;
intent = new Intent(CONNECTED_TO_PROVISIONING_NETWORK_ACTION);
intent.putExtra("EXTRA_URL", url);
intent.setFlags(0);
notification.contentIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0);
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;
intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
intent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT |
Intent.FLAG_ACTIVITY_NEW_TASK);
notification.contentIntent = PendingIntent.getActivity(mContext, 0, intent, 0);
break;
}
notification.when = 0;
notification.icon = icon;
notification.flags = Notification.FLAG_AUTO_CANCEL;
notification.tickerText = title;
notification.setLatestEventInfo(mContext, title, details, notification.contentIntent);
try {
notificationManager.notify(NOTIFICATION_ID, networkType, notification);
} catch (NullPointerException npe) {
loge("setNotificaitionVisible: visible notificationManager npe=" + npe);
npe.printStackTrace();
}
} else {
try {
notificationManager.cancel(NOTIFICATION_ID, networkType);
} 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$s&amp;iccid=%1$s&amp;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 extraInfo, String url) {
enforceConnectivityInternalPermission();
setProvNotificationVisible(visible, networkType, extraInfo, url);
}
@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.sendBroadcast(intent);
} 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(mContext, mVpnCallback, mNetd, this, userId);
mVpns.put(userId, userVpn);
userVpn.startMonitoring(mContext, mTrackerHandler);
}
}
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);
}
}
};
@Override
public LinkQualityInfo getLinkQualityInfo(int networkType) {
enforceAccessPermission();
if (isNetworkTypeValid(networkType)) {
return mNetTrackers[networkType].getLinkQualityInfo();
} else {
return null;
}
}
@Override
public LinkQualityInfo getActiveLinkQualityInfo() {
enforceAccessPermission();
if (isNetworkTypeValid(mActiveDefaultNetwork)) {
return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo();
} else {
return null;
}
}
@Override
public LinkQualityInfo[] getAllLinkQualityInfo() {
enforceAccessPermission();
final ArrayList<LinkQualityInfo> result = Lists.newArrayList();
for (NetworkStateTracker tracker : mNetTrackers) {
if (tracker != null) {
LinkQualityInfo li = tracker.getLinkQualityInfo();
if (li != null) {
result.add(li);
}
}
}
return result.toArray(new LinkQualityInfo[result.size()]);
}
/* Infrastructure for network sampling */
private void handleNetworkSamplingTimeout() {
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);
}
}
}
log("Done.");
int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(),
Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS,
DEFAULT_SAMPLING_INTERVAL_IN_SECONDS);
if (DBG) log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds");
setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent);
}
void setAlarm(int timeoutInMilliseconds, PendingIntent intent) {
long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds;
mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, wakeupTime, intent);
}
}