/* * 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_MOBILE; import static android.net.ConnectivityManager.TYPE_MOBILE_MMS; import static android.net.ConnectivityManager.TYPE_MOBILE_SUPL; import static android.net.ConnectivityManager.TYPE_MOBILE_DUN; import static android.net.ConnectivityManager.TYPE_MOBILE_FOTA; import static android.net.ConnectivityManager.TYPE_MOBILE_IMS; import static android.net.ConnectivityManager.TYPE_MOBILE_CBS; import static android.net.ConnectivityManager.TYPE_MOBILE_IA; import static android.net.ConnectivityManager.TYPE_MOBILE_HIPRI; import static android.net.ConnectivityManager.TYPE_NONE; import static android.net.ConnectivityManager.TYPE_WIFI; import static android.net.ConnectivityManager.TYPE_WIMAX; import static android.net.ConnectivityManager.TYPE_PROXY; import static android.net.ConnectivityManager.getNetworkTypeName; import static android.net.ConnectivityManager.isNetworkTypeValid; import static android.net.NetworkPolicyManager.RULE_ALLOW_ALL; import static android.net.NetworkPolicyManager.RULE_REJECT_METERED; import android.app.AlarmManager; import android.app.Notification; import android.app.NotificationManager; import android.app.PendingIntent; import android.content.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.ConnectivityManager; 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.Network; import android.net.NetworkAgent; import android.net.NetworkCapabilities; import android.net.NetworkConfig; import android.net.NetworkInfo; import android.net.NetworkInfo.DetailedState; import android.net.NetworkFactory; import android.net.NetworkMisc; import android.net.NetworkQuotaInfo; import android.net.NetworkRequest; import android.net.NetworkState; import android.net.NetworkStateTracker; import android.net.NetworkUtils; import android.net.Proxy; import android.net.ProxyDataTracker; import android.net.ProxyInfo; import android.net.RouteInfo; import android.net.SamplingDataTracker; import android.net.UidRange; import android.net.Uri; import android.net.wimax.WimaxManagerConstants; import android.os.AsyncTask; import android.os.Binder; import android.os.Build; import android.os.Bundle; import android.os.FileUtils; import android.os.Handler; import android.os.HandlerThread; import android.os.IBinder; import android.os.INetworkManagementService; import android.os.Looper; import android.os.Message; import android.os.Messenger; import android.os.ParcelFileDescriptor; import android.os.PowerManager; import android.os.Process; import android.os.RemoteException; import android.os.ServiceManager; import android.os.SystemClock; import android.os.SystemProperties; import android.os.UserHandle; import android.os.UserManager; import android.provider.Settings; import android.security.Credentials; import android.security.KeyStore; import android.telephony.TelephonyManager; import android.text.TextUtils; import android.util.Slog; import android.util.SparseArray; import android.util.SparseIntArray; import android.util.Xml; import com.android.internal.R; import com.android.internal.annotations.GuardedBy; import com.android.internal.app.IBatteryStats; import com.android.internal.net.LegacyVpnInfo; import com.android.internal.net.NetworkStatsFactory; import com.android.internal.net.VpnConfig; import com.android.internal.net.VpnProfile; import com.android.internal.telephony.DctConstants; import com.android.internal.telephony.Phone; import com.android.internal.telephony.PhoneConstants; import com.android.internal.telephony.TelephonyIntents; import com.android.internal.util.AsyncChannel; import com.android.internal.util.IndentingPrintWriter; import com.android.internal.util.XmlUtils; import com.android.server.am.BatteryStatsService; import com.android.server.connectivity.DataConnectionStats; import com.android.server.connectivity.Nat464Xlat; import com.android.server.connectivity.NetworkAgentInfo; import com.android.server.connectivity.NetworkMonitor; import com.android.server.connectivity.PacManager; import com.android.server.connectivity.PermissionMonitor; import com.android.server.connectivity.Tethering; import com.android.server.connectivity.Vpn; import com.android.server.net.BaseNetworkObserver; import com.android.server.net.LockdownVpnTracker; import com.google.android.collect.Lists; import com.google.android.collect.Sets; import 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.Objects; import java.util.Random; import java.util.concurrent.atomic.AtomicBoolean; import java.util.concurrent.atomic.AtomicInteger; import javax.net.ssl.HostnameVerifier; import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLSession; /** * @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; // network sampling debugging private static final boolean SAMPLE_DBG = false; private static final boolean LOGD_RULES = false; // TODO: create better separation between radio types and network types // how long to wait before switching back to a radio's default network private static final int RESTORE_DEFAULT_NETWORK_DELAY = 1 * 60 * 1000; // system property that can override the above value private static final String NETWORK_RESTORE_DELAY_PROP_NAME = "android.telephony.apn-restore"; // Default value if FAIL_FAST_TIME_MS is not set private static final int DEFAULT_FAIL_FAST_TIME_MS = 1 * 60 * 1000; // system property that can override DEFAULT_FAIL_FAST_TIME_MS private static final String FAIL_FAST_TIME_MS = "persist.radio.fail_fast_time_ms"; private static final String ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED = "android.net.ConnectivityService.action.PKT_CNT_SAMPLE_INTERVAL_ELAPSED"; private static final int SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE = 0; private PendingIntent mSampleIntervalElapsedIntent; // Set network sampling interval at 12 minutes, this way, even if the timers get // aggregated, it will fire at around 15 minutes, which should allow us to // aggregate this timer with other timers (specially the socket keep alive timers) private static final int DEFAULT_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 12 * 60); // start network sampling a minute after booting ... private static final int DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS = (SAMPLE_DBG ? 30 : 60); AlarmManager mAlarmManager; private Tethering mTethering; private final PermissionMonitor mPermissionMonitor; private KeyStore mKeyStore; @GuardedBy("mVpns") private final SparseArray mVpns = new SparseArray(); 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 mMeteredIfaces = Sets.newHashSet(); /** * Sometimes we want to refer to the individual network state * trackers separately, and sometimes we just want to treat them * abstractly. */ private NetworkStateTracker mNetTrackers[]; private Context mContext; private int mNetworkPreference; private int mActiveDefaultNetwork = TYPE_NONE; // 0 is full bad, 100 is full good private int mDefaultInetConditionPublished = 0; private Object mDnsLock = new Object(); private int mNumDnsEntries; private boolean mTestMode; private static ConnectivityService sServiceInstance; private INetworkManagementService mNetd; private INetworkPolicyManager mPolicyManager; private String mCurrentTcpBufferSizes; private static final int ENABLED = 1; private static final int DISABLED = 0; /** * used internally to change our mobile data enabled flag */ private static final int EVENT_CHANGE_MOBILE_DATA_ENABLED = 2; /** * used internally to clear a wakelock when transitioning * from one net to another. Clear happens when we get a new * network - EVENT_EXPIRE_NET_TRANSITION_WAKELOCK happens * after a timeout if no network is found (typically 1 min). */ private static final int EVENT_CLEAR_NET_TRANSITION_WAKELOCK = 8; /** * used internally to reload global proxy settings */ private static final int EVENT_APPLY_GLOBAL_HTTP_PROXY = 9; /** * used internally to set external dependency met/unmet * arg1 = ENABLED (met) or DISABLED (unmet) * arg2 = NetworkType */ private static final int EVENT_SET_DEPENDENCY_MET = 10; /** * used internally to send a sticky broadcast delayed. */ private static final int EVENT_SEND_STICKY_BROADCAST_INTENT = 11; /** * Used internally to * {@link NetworkStateTracker#setPolicyDataEnable(boolean)}. */ private static final int EVENT_SET_POLICY_DATA_ENABLE = 12; /** * Used internally to disable fail fast of mobile data */ private static final int EVENT_ENABLE_FAIL_FAST_MOBILE_DATA = 14; /** * used internally to indicate that data sampling interval is up */ private static final int EVENT_SAMPLE_INTERVAL_ELAPSED = 15; /** * PAC manager has received new port. */ private static final int EVENT_PROXY_HAS_CHANGED = 16; /** * used internally when registering NetworkFactories * obj = NetworkFactoryInfo */ private static final int EVENT_REGISTER_NETWORK_FACTORY = 17; /** * used internally when registering NetworkAgents * obj = Messenger */ private static final int EVENT_REGISTER_NETWORK_AGENT = 18; /** * used to add a network request * includes a NetworkRequestInfo */ private static final int EVENT_REGISTER_NETWORK_REQUEST = 19; /** * indicates a timeout period is over - check if we had a network yet or not * and if not, call the timeout calback (but leave the request live until they * cancel it. * includes a NetworkRequestInfo */ private static final int EVENT_TIMEOUT_NETWORK_REQUEST = 20; /** * used to add a network listener - no request * includes a NetworkRequestInfo */ private static final int EVENT_REGISTER_NETWORK_LISTENER = 21; /** * used to remove a network request, either a listener or a real request * arg1 = UID of caller * obj = NetworkRequest */ private static final int EVENT_RELEASE_NETWORK_REQUEST = 22; /** * used internally when registering NetworkFactories * obj = Messenger */ private static final int EVENT_UNREGISTER_NETWORK_FACTORY = 23; /** * used internally to expire a wakelock when transitioning * from one net to another. Expire happens when we fail to find * a new network (typically after 1 minute) - * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found * a replacement network. */ private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; /** * Used internally to indicate the system is ready. */ private static final int EVENT_SYSTEM_READY = 25; /** Handler used for internal events. */ final private InternalHandler mHandler; /** Handler used for incoming {@link NetworkStateTracker} events. */ final private NetworkStateTrackerHandler mTrackerHandler; private boolean mSystemReady; private Intent mInitialBroadcast; private PowerManager.WakeLock mNetTransitionWakeLock; private String mNetTransitionWakeLockCausedBy = ""; private int mNetTransitionWakeLockSerialNumber; private int mNetTransitionWakeLockTimeout; private InetAddress mDefaultDns; // used in DBG mode to track inet condition reports private static final int INET_CONDITION_LOG_MAX_SIZE = 15; private ArrayList mInetLog; // track the current default http proxy - tell the world if we get a new one (real change) private volatile ProxyInfo mDefaultProxy = null; private Object mProxyLock = new Object(); private boolean mDefaultProxyDisabled = false; // track the global proxy. private ProxyInfo mGlobalProxy = null; private PacManager mPacManager = null; private SettingsObserver mSettingsObserver; private UserManager mUserManager; NetworkConfig[] mNetConfigs; int mNetworksDefined; // the set of network types that can only be enabled by system/sig apps List mProtectedNetworks; private DataConnectionStats mDataConnectionStats; private AtomicInteger mEnableFailFastMobileDataTag = new AtomicInteger(0); TelephonyManager mTelephonyManager; // sequence number for Networks; keep in sync with system/netd/NetworkController.cpp private final static int MIN_NET_ID = 100; // some reserved marks private final static int MAX_NET_ID = 65535; private int mNextNetId = MIN_NET_ID; // sequence number of NetworkRequests private int mNextNetworkRequestId = 1; /** * Implements support for the legacy "one network per network type" model. * * We used to have a static array of NetworkStateTrackers, one for each * network type, but that doesn't work any more now that we can have, * for example, more that one wifi network. This class stores all the * NetworkAgentInfo objects that support a given type, but the legacy * API will only see the first one. * * It serves two main purposes: * * 1. Provide information about "the network for a given type" (since this * API only supports one). * 2. Send legacy connectivity change broadcasts. Broadcasts are sent if * the first network for a given type changes, or if the default network * changes. */ private class LegacyTypeTracker { private static final boolean DBG = true; private static final boolean VDBG = false; private static final String TAG = "CSLegacyTypeTracker"; /** * Array of lists, one per legacy network type (e.g., TYPE_MOBILE_MMS). * Each list holds references to all NetworkAgentInfos that are used to * satisfy requests for that network type. * * This array is built out at startup such that an unsupported network * doesn't get an ArrayList instance, making this a tristate: * unsupported, supported but not active and active. * * The actual lists are populated when we scan the network types that * are supported on this device. */ private ArrayList mTypeLists[]; public LegacyTypeTracker() { mTypeLists = (ArrayList[]) new ArrayList[ConnectivityManager.MAX_NETWORK_TYPE + 1]; } public void addSupportedType(int type) { if (mTypeLists[type] != null) { throw new IllegalStateException( "legacy list for type " + type + "already initialized"); } mTypeLists[type] = new ArrayList(); } public boolean isTypeSupported(int type) { return isNetworkTypeValid(type) && mTypeLists[type] != null; } public NetworkAgentInfo getNetworkForType(int type) { if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { return mTypeLists[type].get(0); } else { return null; } } private void maybeLogBroadcast(NetworkAgentInfo nai, boolean connected, int type) { if (DBG) { log("Sending " + (connected ? "connected" : "disconnected") + " broadcast for type " + type + " " + nai.name() + " isDefaultNetwork=" + isDefaultNetwork(nai)); } } /** Adds the given network to the specified legacy type list. */ public void add(int type, NetworkAgentInfo nai) { if (!isTypeSupported(type)) { return; // Invalid network type. } if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); ArrayList list = mTypeLists[type]; if (list.contains(nai)) { loge("Attempting to register duplicate agent for type " + type + ": " + nai); return; } list.add(nai); // Send a broadcast if this is the first network of its type or if it's the default. if (list.size() == 1 || isDefaultNetwork(nai)) { maybeLogBroadcast(nai, true, type); sendLegacyNetworkBroadcast(nai, true, type); } } /** Removes the given network from the specified legacy type list. */ public void remove(int type, NetworkAgentInfo nai) { ArrayList list = mTypeLists[type]; if (list == null || list.isEmpty()) { return; } boolean wasFirstNetwork = list.get(0).equals(nai); if (!list.remove(nai)) { return; } if (wasFirstNetwork || isDefaultNetwork(nai)) { maybeLogBroadcast(nai, false, type); sendLegacyNetworkBroadcast(nai, false, type); } if (!list.isEmpty() && wasFirstNetwork) { if (DBG) log("Other network available for type " + type + ", sending connected broadcast"); maybeLogBroadcast(list.get(0), false, type); sendLegacyNetworkBroadcast(list.get(0), false, type); } } /** Removes the given network from all legacy type lists. */ public void remove(NetworkAgentInfo nai) { if (VDBG) log("Removing agent " + nai); for (int type = 0; type < mTypeLists.length; type++) { remove(type, nai); } } private String naiToString(NetworkAgentInfo nai) { String name = (nai != null) ? nai.name() : "null"; String state = (nai.networkInfo != null) ? nai.networkInfo.getState() + "/" + nai.networkInfo.getDetailedState() : "???/???"; return name + " " + state; } public void dump(IndentingPrintWriter pw) { for (int type = 0; type < mTypeLists.length; type++) { if (mTypeLists[type] == null) continue; pw.print(type + " "); pw.increaseIndent(); if (mTypeLists[type].size() == 0) pw.println("none"); for (NetworkAgentInfo nai : mTypeLists[type]) { pw.println(naiToString(nai)); } pw.decreaseIndent(); } } // This class needs its own log method because it has a different TAG. private void log(String s) { Slog.d(TAG, s); } } private LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(); public ConnectivityService(Context context, INetworkManagementService netManager, INetworkStatsService statsService, INetworkPolicyManager policyManager) { if (DBG) log("ConnectivityService starting up"); NetworkCapabilities netCap = new NetworkCapabilities(); netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); netCap.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); mDefaultRequest = new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId()); NetworkRequestInfo nri = new NetworkRequestInfo(null, mDefaultRequest, new Binder(), NetworkRequestInfo.REQUEST); mNetworkRequests.put(mDefaultRequest, nri); HandlerThread handlerThread = new HandlerThread("ConnectivityServiceThread"); handlerThread.start(); mHandler = new InternalHandler(handlerThread.getLooper()); mTrackerHandler = new NetworkStateTrackerHandler(handlerThread.getLooper()); // setup our unique device name if (TextUtils.isEmpty(SystemProperties.get("net.hostname"))) { String id = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID); if (id != null && id.length() > 0) { String name = new String("android-").concat(id); SystemProperties.set("net.hostname", name); } } // read our default dns server ip String dns = Settings.Global.getString(context.getContentResolver(), Settings.Global.DEFAULT_DNS_SERVER); if (dns == null || dns.length() == 0) { dns = context.getResources().getString( com.android.internal.R.string.config_default_dns_server); } try { mDefaultDns = NetworkUtils.numericToInetAddress(dns); } catch (IllegalArgumentException e) { loge("Error setting defaultDns using " + dns); } 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]; mNetConfigs = new NetworkConfig[ConnectivityManager.MAX_NETWORK_TYPE+1]; // TODO: What is the "correct" way to do determine if this is a wifi only device? boolean wifiOnly = SystemProperties.getBoolean("ro.radio.noril", false); log("wifiOnly=" + wifiOnly); String[] naStrings = context.getResources().getStringArray( com.android.internal.R.array.networkAttributes); for (String naString : naStrings) { try { NetworkConfig n = new NetworkConfig(naString); if (VDBG) log("naString=" + naString + " config=" + n); if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { loge("Error in networkAttributes - ignoring attempt to define type " + n.type); continue; } if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { log("networkAttributes - ignoring mobile as this dev is wifiOnly " + n.type); continue; } if (mNetConfigs[n.type] != null) { loge("Error in networkAttributes - ignoring attempt to redefine type " + n.type); continue; } mLegacyTypeTracker.addSupportedType(n.type); mNetConfigs[n.type] = n; mNetworksDefined++; } catch(Exception e) { // ignore it - leave the entry null } } if (VDBG) log("mNetworksDefined=" + mNetworksDefined); mProtectedNetworks = new ArrayList(); int[] protectedNetworks = context.getResources().getIntArray( com.android.internal.R.array.config_protectedNetworks); for (int p : protectedNetworks) { if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { mProtectedNetworks.add(p); } else { if (DBG) loge("Ignoring protectedNetwork " + p); } } mTestMode = SystemProperties.get("cm.test.mode").equals("true") && SystemProperties.get("ro.build.type").equals("eng"); mTethering = new Tethering(mContext, mNetd, statsService, mHandler.getLooper()); mPermissionMonitor = new PermissionMonitor(mContext, mNetd); //set up the listener for user state for creating user VPNs IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(Intent.ACTION_USER_STARTING); intentFilter.addAction(Intent.ACTION_USER_STOPPING); mContext.registerReceiverAsUser( mUserIntentReceiver, UserHandle.ALL, intentFilter, null, null); 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(); mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); IntentFilter filter = new IntentFilter(); filter.addAction(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); mContext.registerReceiver( new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED)) { mHandler.sendMessage(mHandler.obtainMessage (EVENT_SAMPLE_INTERVAL_ELAPSED)); } } }, new IntentFilter(filter)); mPacManager = new PacManager(mContext, mHandler, EVENT_PROXY_HAS_CHANGED); mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); } private synchronized int nextNetworkRequestId() { return mNextNetworkRequestId++; } private void assignNextNetId(NetworkAgentInfo nai) { synchronized (mNetworkForNetId) { for (int i = MIN_NET_ID; i <= MAX_NET_ID; i++) { int netId = mNextNetId; if (++mNextNetId > MAX_NET_ID) mNextNetId = MIN_NET_ID; // Make sure NetID unused. http://b/16815182 if (mNetworkForNetId.get(netId) == null) { nai.network = new Network(netId); mNetworkForNetId.put(netId, nai); return; } } } throw new IllegalStateException("No free netIds"); } private 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 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 networkType. * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. */ private boolean isNetworkBlocked(int networkType, int uid) { return isNetworkWithLinkPropertiesBlocked(getLinkPropertiesForType(networkType), uid); } /** * Check if UID should be blocked from using the network represented by the given * NetworkAgentInfo. */ private boolean isNetworkBlocked(NetworkAgentInfo nai, int uid) { return isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid); } /** * Check if UID should be blocked from using the network with the given LinkProperties. */ private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid) { final boolean networkCostly; final int uidRules; final String iface = (lp == null ? "" : lp.getInterfaceName()); synchronized (mRulesLock) { networkCostly = mMeteredIfaces.contains(iface); uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); } if (networkCostly && (uidRules & RULE_REJECT_METERED) != 0) { return true; } // no restrictive rules; network is visible return false; } /** * Return a filtered {@link NetworkInfo}, potentially marked * {@link DetailedState#BLOCKED} based on * {@link #isNetworkBlocked}. * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. */ private NetworkInfo getFilteredNetworkInfo(int networkType, int uid) { NetworkInfo info = getNetworkInfoForType(networkType); return getFilteredNetworkInfo(info, networkType, uid); } /* * @deprecated Uses mLegacyTypeTracker; cannot deal with multiple Networks of the same type. */ private NetworkInfo getFilteredNetworkInfo(NetworkInfo info, int networkType, int uid) { if (isNetworkBlocked(networkType, uid)) { // network is blocked; clone and override state info = new NetworkInfo(info); info.setDetailedState(DetailedState.BLOCKED, null, null); if (VDBG) log("returning Blocked NetworkInfo"); } if (mLockdownTracker != null) { info = mLockdownTracker.augmentNetworkInfo(info); if (VDBG) log("returning Locked NetworkInfo"); } return info; } private NetworkInfo getFilteredNetworkInfo(NetworkAgentInfo nai, int uid) { NetworkInfo info = nai.networkInfo; if (isNetworkBlocked(nai, uid)) { // network is blocked; clone and override state info = new NetworkInfo(info); info.setDetailedState(DetailedState.BLOCKED, null, null); if (DBG) log("returning Blocked NetworkInfo"); } if (mLockdownTracker != null) { info = mLockdownTracker.augmentNetworkInfo(info); if (DBG) log("returning Locked NetworkInfo"); } return info; } /** * Return NetworkInfo for the active (i.e., connected) network interface. * It is assumed that at most one network is active at a time. If more * than one is active, it is indeterminate which will be returned. * @return the info for the active network, or {@code null} if none is * active */ @Override public NetworkInfo getActiveNetworkInfo() { enforceAccessPermission(); final int uid = Binder.getCallingUid(); 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)) { return getNetworkInfoForType(mActiveDefaultNetwork); } 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)) { if (getNetworkInfoForType(networkType) != null) { info = getFilteredNetworkInfo(networkType, uid); } } return info; } @Override public NetworkInfo getNetworkInfoForNetwork(Network network) { enforceAccessPermission(); if (network == null) return null; final int uid = Binder.getCallingUid(); NetworkAgentInfo nai = null; synchronized (mNetworkForNetId) { nai = mNetworkForNetId.get(network.netId); } if (nai == null) return null; synchronized (nai) { if (nai.networkInfo == null) return null; return getFilteredNetworkInfo(nai, uid); } } @Override public NetworkInfo[] getAllNetworkInfo() { enforceAccessPermission(); final int uid = Binder.getCallingUid(); final ArrayList result = Lists.newArrayList(); for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; networkType++) { if (getNetworkInfoForType(networkType) != null) { result.add(getFilteredNetworkInfo(networkType, uid)); } } return result.toArray(new NetworkInfo[result.size()]); } @Override public Network getNetworkForType(int networkType) { enforceAccessPermission(); final int uid = Binder.getCallingUid(); if (isNetworkBlocked(networkType, uid)) { return null; } NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); return (nai == null) ? null : nai.network; } @Override public Network[] getAllNetworks() { enforceAccessPermission(); final ArrayList result = new ArrayList(); synchronized (mNetworkForNetId) { for (int i = 0; i < mNetworkForNetId.size(); i++) { result.add(new Network(mNetworkForNetId.valueAt(i).network)); } } return result.toArray(new Network[result.size()]); } @Override public boolean isNetworkSupported(int networkType) { enforceAccessPermission(); return (isNetworkTypeValid(networkType) && (getNetworkInfoForType(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 getLinkPropertiesForType(mActiveDefaultNetwork); } @Override public LinkProperties getLinkPropertiesForType(int networkType) { enforceAccessPermission(); if (isNetworkTypeValid(networkType)) { return getLinkPropertiesForTypeInternal(networkType); } return null; } // TODO - this should be ALL networks @Override public LinkProperties getLinkProperties(Network network) { enforceAccessPermission(); NetworkAgentInfo nai = null; synchronized (mNetworkForNetId) { nai = mNetworkForNetId.get(network.netId); } if (nai != null) { synchronized (nai) { return new LinkProperties(nai.linkProperties); } } return null; } @Override public NetworkCapabilities getNetworkCapabilities(Network network) { enforceAccessPermission(); NetworkAgentInfo nai = null; synchronized (mNetworkForNetId) { nai = mNetworkForNetId.get(network.netId); } if (nai != null) { synchronized (nai) { return new NetworkCapabilities(nai.networkCapabilities); } } return null; } @Override public NetworkState[] getAllNetworkState() { enforceAccessPermission(); final int uid = Binder.getCallingUid(); final ArrayList result = Lists.newArrayList(); for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; networkType++) { if (getNetworkInfoForType(networkType) != null) { final NetworkInfo info = getFilteredNetworkInfo(networkType, uid); final LinkProperties lp = getLinkPropertiesForTypeInternal(networkType); final NetworkCapabilities netcap = getNetworkCapabilitiesForType(networkType); result.add(new NetworkState(info, lp, netcap)); } } return result.toArray(new NetworkState[result.size()]); } private NetworkState getNetworkStateUnchecked(int networkType) { if (isNetworkTypeValid(networkType)) { NetworkInfo info = getNetworkInfoForType(networkType); if (info != null) { return new NetworkState(info, getLinkPropertiesForTypeInternal(networkType), getNetworkCapabilitiesForType(networkType)); } } 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; } private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { @Override public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { int deviceType = Integer.parseInt(label); sendDataActivityBroadcast(deviceType, active, tsNanos); } }; /** * Ensure that a network route exists to deliver traffic to the specified * host via the specified network interface. * @param networkType the type of the network over which traffic to the * specified host is to be routed * @param hostAddress the IP address of the host to which the route is * desired * @return {@code true} on success, {@code false} on failure */ public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { enforceChangePermission(); if (mProtectedNetworks.contains(networkType)) { enforceConnectivityInternalPermission(); } InetAddress addr; try { addr = InetAddress.getByAddress(hostAddress); } catch (UnknownHostException e) { if (DBG) log("requestRouteToHostAddress got " + e.toString()); return false; } if (!ConnectivityManager.isNetworkTypeValid(networkType)) { if (DBG) log("requestRouteToHostAddress on invalid network: " + networkType); return false; } NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); if (nai == null) { if (mLegacyTypeTracker.isTypeSupported(networkType) == false) { if (DBG) log("requestRouteToHostAddress on unsupported network: " + networkType); } else { if (DBG) log("requestRouteToHostAddress on down network: " + networkType); } return false; } DetailedState netState; synchronized (nai) { netState = nai.networkInfo.getDetailedState(); } if (netState != DetailedState.CONNECTED && netState != DetailedState.CAPTIVE_PORTAL_CHECK) { if (VDBG) { log("requestRouteToHostAddress on down network " + "(" + networkType + ") - dropped" + " netState=" + netState); } return false; } final int uid = Binder.getCallingUid(); final long token = Binder.clearCallingIdentity(); try { LinkProperties lp; int netId; synchronized (nai) { lp = nai.linkProperties; netId = nai.network.netId; } boolean ok = addLegacyRouteToHost(lp, addr, netId, uid); if (DBG) log("requestRouteToHostAddress ok=" + ok); return ok; } finally { Binder.restoreCallingIdentity(token); } } private boolean addLegacyRouteToHost(LinkProperties lp, InetAddress addr, int netId, int uid) { RouteInfo bestRoute = RouteInfo.selectBestRoute(lp.getAllRoutes(), addr); if (bestRoute == null) { bestRoute = RouteInfo.makeHostRoute(addr, lp.getInterfaceName()); } else { String iface = bestRoute.getInterface(); if (bestRoute.getGateway().equals(addr)) { // if there is no better route, add the implied hostroute for our gateway bestRoute = RouteInfo.makeHostRoute(addr, iface); } else { // if we will connect to this through another route, add a direct route // to it's gateway bestRoute = RouteInfo.makeHostRoute(addr, bestRoute.getGateway(), iface); } } if (DBG) log("Adding " + bestRoute + " for interface " + bestRoute.getInterface()); try { mNetd.addLegacyRouteForNetId(netId, bestRoute, uid); } catch (Exception e) { // never crash - catch them all if (DBG) loge("Exception trying to add a route: " + e); return false; } return true; } public void setDataDependency(int networkType, boolean met) { enforceConnectivityInternalPermission(); mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_DEPENDENCY_MET, (met ? ENABLED : DISABLED), networkType)); } private void handleSetDependencyMet(int networkType, boolean met) { if (mNetTrackers[networkType] != null) { if (DBG) { log("handleSetDependencyMet(" + networkType + ", " + met + ")"); } mNetTrackers[networkType].setDependencyMet(met); } } private INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() { @Override public void onUidRulesChanged(int uid, int uidRules) { // caller is NPMS, since we only register with them if (LOGD_RULES) { log("onUidRulesChanged(uid=" + uid + ", uidRules=" + uidRules + ")"); } synchronized (mRulesLock) { // skip update when we've already applied rules final int oldRules = mUidRules.get(uid, RULE_ALLOW_ALL); if (oldRules == uidRules) return; mUidRules.put(uid, uidRules); } // TODO: notify UID when it has requested targeted updates } @Override public void onMeteredIfacesChanged(String[] meteredIfaces) { // caller is NPMS, since we only register with them if (LOGD_RULES) { log("onMeteredIfacesChanged(ifaces=" + Arrays.toString(meteredIfaces) + ")"); } synchronized (mRulesLock) { mMeteredIfaces.clear(); for (String iface : meteredIfaces) { mMeteredIfaces.add(iface); } } } @Override public void onRestrictBackgroundChanged(boolean restrictBackground) { // caller is NPMS, since we only register with them if (LOGD_RULES) { log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); } // kick off connectivity change broadcast for active network, since // global background policy change is radical. 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); } } } } }; @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) { // TODO - handle this passing to factories // if (isNetworkTypeValid(networkType)) { // final NetworkStateTracker tracker = mNetTrackers[networkType]; // if (tracker != null) { // tracker.setPolicyDataEnable(enabled); // } // } } private void enforceInternetPermission() { mContext.enforceCallingOrSelfPermission( android.Manifest.permission.INTERNET, "ConnectivityService"); } private void enforceAccessPermission() { mContext.enforceCallingOrSelfPermission( android.Manifest.permission.ACCESS_NETWORK_STATE, "ConnectivityService"); } private void enforceChangePermission() { mContext.enforceCallingOrSelfPermission( android.Manifest.permission.CHANGE_NETWORK_STATE, "ConnectivityService"); } private void enforceTetherAccessPermission() { mContext.enforceCallingOrSelfPermission( android.Manifest.permission.ACCESS_NETWORK_STATE, "ConnectivityService"); } private void enforceConnectivityInternalPermission() { mContext.enforceCallingOrSelfPermission( android.Manifest.permission.CONNECTIVITY_INTERNAL, "ConnectivityService"); } public void sendConnectedBroadcast(NetworkInfo info) { enforceConnectivityInternalPermission(); sendGeneralBroadcast(info, CONNECTIVITY_ACTION_IMMEDIATE); sendGeneralBroadcast(info, CONNECTIVITY_ACTION); } private void 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, long tsNanos) { Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); final long ident = Binder.clearCallingIdentity(); try { mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); } finally { Binder.restoreCallingIdentity(ident); } } private void sendStickyBroadcast(Intent intent) { synchronized(this) { if (!mSystemReady) { mInitialBroadcast = new Intent(intent); } intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); if (DBG) { log("sendStickyBroadcast: action=" + intent.getAction()); } final long ident = Binder.clearCallingIdentity(); 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() { // start network sampling .. Intent intent = new Intent(ACTION_PKT_CNT_SAMPLE_INTERVAL_ELAPSED); intent.setPackage(mContext.getPackageName()); mSampleIntervalElapsedIntent = PendingIntent.getBroadcast(mContext, SAMPLE_INTERVAL_ELAPSED_REQUEST_CODE, intent, 0); setAlarm(DEFAULT_START_SAMPLING_INTERVAL_IN_SECONDS * 1000, mSampleIntervalElapsedIntent); loadGlobalProxy(); synchronized(this) { mSystemReady = true; if (mInitialBroadcast != null) { mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); mInitialBroadcast = null; } } // load the global proxy at startup mHandler.sendMessage(mHandler.obtainMessage(EVENT_APPLY_GLOBAL_HTTP_PROXY)); // Try bringing up tracker, but if KeyStore isn't ready yet, wait // for user to unlock device. if (!updateLockdownVpn()) { final IntentFilter filter = new IntentFilter(Intent.ACTION_USER_PRESENT); mContext.registerReceiver(mUserPresentReceiver, filter); } mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); mPermissionMonitor.startMonitoring(); } private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { // Try creating lockdown tracker, since user present usually means // unlocked keystore. if (updateLockdownVpn()) { mContext.unregisterReceiver(this); } } }; /** @hide */ @Override public void captivePortalCheckCompleted(NetworkInfo info, boolean isCaptivePortal) { enforceConnectivityInternalPermission(); if (DBG) log("captivePortalCheckCompleted: ni=" + info + " captive=" + isCaptivePortal); // mNetTrackers[info.getType()].captivePortalCheckCompleted(isCaptivePortal); } /** * Setup data activity tracking for the given network. * * Every {@code setupDataActivityTracking} should be paired with a * {@link #removeDataActivityTracking} for cleanup. */ private void setupDataActivityTracking(NetworkAgentInfo networkAgent) { final String iface = networkAgent.linkProperties.getInterfaceName(); final int timeout; int type = ConnectivityManager.TYPE_NONE; if (networkAgent.networkCapabilities.hasTransport( NetworkCapabilities.TRANSPORT_CELLULAR)) { timeout = Settings.Global.getInt(mContext.getContentResolver(), Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, 5); type = ConnectivityManager.TYPE_MOBILE; } else if (networkAgent.networkCapabilities.hasTransport( NetworkCapabilities.TRANSPORT_WIFI)) { timeout = Settings.Global.getInt(mContext.getContentResolver(), Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, 0); type = ConnectivityManager.TYPE_WIFI; } else { // do not track any other networks timeout = 0; } if (timeout > 0 && iface != null && type != ConnectivityManager.TYPE_NONE) { try { mNetd.addIdleTimer(iface, timeout, type); } catch (Exception e) { // You shall not crash! loge("Exception in setupDataActivityTracking " + e); } } } /** * Remove data activity tracking when network disconnects. */ private void removeDataActivityTracking(NetworkAgentInfo networkAgent) { final String iface = networkAgent.linkProperties.getInterfaceName(); final NetworkCapabilities caps = networkAgent.networkCapabilities; if (iface != null && (caps.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI))) { try { // the call fails silently if no idletimer setup for this interface mNetd.removeIdleTimer(iface); } catch (Exception e) { loge("Exception in removeDataActivityTracking " + e); } } } /** * Reads the network specific MTU size from reources. * and set it on it's iface. */ private void updateMtu(LinkProperties newLp, LinkProperties oldLp) { final String iface = newLp.getInterfaceName(); final int mtu = newLp.getMtu(); if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { if (VDBG) log("identical MTU - not setting"); return; } if (LinkProperties.isValidMtu(mtu, newLp.hasGlobalIPv6Address()) == false) { loge("Unexpected mtu value: " + mtu + ", " + iface); return; } // Cannot set MTU without interface name if (TextUtils.isEmpty(iface)) { loge("Setting MTU size with null iface."); return; } try { if (DBG) log("Setting MTU size: " + iface + ", " + mtu); mNetd.setMtu(iface, mtu); } catch (Exception e) { Slog.e(TAG, "exception in setMtu()" + e); } } private static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; private void updateTcpBufferSizes(NetworkAgentInfo nai) { if (isDefaultNetwork(nai) == false) { return; } String tcpBufferSizes = nai.linkProperties.getTcpBufferSizes(); String[] values = null; if (tcpBufferSizes != null) { values = tcpBufferSizes.split(","); } if (values == null || values.length != 6) { if (DBG) log("Invalid tcpBufferSizes string: " + tcpBufferSizes +", using defaults"); tcpBufferSizes = DEFAULT_TCP_BUFFER_SIZES; values = tcpBufferSizes.split(","); } if (tcpBufferSizes.equals(mCurrentTcpBufferSizes)) return; try { if (DBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); final String prefix = "/sys/kernel/ipv4/tcp_"; FileUtils.stringToFile(prefix + "rmem_min", values[0]); FileUtils.stringToFile(prefix + "rmem_def", values[1]); FileUtils.stringToFile(prefix + "rmem_max", values[2]); FileUtils.stringToFile(prefix + "wmem_min", values[3]); FileUtils.stringToFile(prefix + "wmem_def", values[4]); FileUtils.stringToFile(prefix + "wmem_max", values[5]); mCurrentTcpBufferSizes = tcpBufferSizes; } catch (IOException e) { loge("Can't set TCP buffer sizes:" + e); } final String defaultRwndKey = "net.tcp.default_init_rwnd"; int defaultRwndValue = SystemProperties.getInt(defaultRwndKey, 0); Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), Settings.Global.TCP_DEFAULT_INIT_RWND, defaultRwndValue); final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; if (rwndValue != 0) { SystemProperties.set(sysctlKey, rwndValue.toString()); } } private void flushVmDnsCache() { /* * Tell the VMs to toss their DNS caches */ Intent intent = new Intent(Intent.ACTION_CLEAR_DNS_CACHE); intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); /* * Connectivity events can happen before boot has completed ... */ intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); final long ident = Binder.clearCallingIdentity(); try { mContext.sendBroadcastAsUser(intent, UserHandle.ALL); } finally { Binder.restoreCallingIdentity(ident); } } @Override public int getRestoreDefaultNetworkDelay(int networkType) { String restoreDefaultNetworkDelayStr = SystemProperties.get( NETWORK_RESTORE_DELAY_PROP_NAME); if(restoreDefaultNetworkDelayStr != null && restoreDefaultNetworkDelayStr.length() != 0) { try { return Integer.valueOf(restoreDefaultNetworkDelayStr); } catch (NumberFormatException e) { } } // if the system property isn't set, use the value for the apn type int ret = RESTORE_DEFAULT_NETWORK_DELAY; if ((networkType <= ConnectivityManager.MAX_NETWORK_TYPE) && (mNetConfigs[networkType] != null)) { ret = mNetConfigs[networkType].restoreTime; } return ret; } @Override protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); if (mContext.checkCallingOrSelfPermission( android.Manifest.permission.DUMP) != PackageManager.PERMISSION_GRANTED) { pw.println("Permission Denial: can't dump ConnectivityService " + "from from pid=" + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid()); return; } pw.println("NetworkFactories for:"); pw.increaseIndent(); for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { pw.println(nfi.name); } pw.decreaseIndent(); pw.println(); NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); pw.print("Active default network: "); if (defaultNai == null) { pw.println("none"); } else { pw.println(defaultNai.network.netId); } pw.println(); pw.println("Current Networks:"); pw.increaseIndent(); for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { pw.println(nai.toString()); pw.increaseIndent(); pw.println("Requests:"); pw.increaseIndent(); for (int i = 0; i < nai.networkRequests.size(); i++) { pw.println(nai.networkRequests.valueAt(i).toString()); } pw.decreaseIndent(); pw.println("Lingered:"); pw.increaseIndent(); for (NetworkRequest nr : nai.networkLingered) pw.println(nr.toString()); pw.decreaseIndent(); pw.decreaseIndent(); } pw.decreaseIndent(); pw.println(); pw.println("Network Requests:"); pw.increaseIndent(); for (NetworkRequestInfo nri : mNetworkRequests.values()) { pw.println(nri.toString()); } pw.println(); pw.decreaseIndent(); pw.print("mActiveDefaultNetwork: " + mActiveDefaultNetwork); if (mActiveDefaultNetwork != TYPE_NONE) { NetworkInfo activeNetworkInfo = getActiveNetworkInfo(); if (activeNetworkInfo != null) { pw.print(" " + activeNetworkInfo.getState() + "/" + activeNetworkInfo.getDetailedState()); } } pw.println(); pw.println("mLegacyTypeTracker:"); pw.increaseIndent(); mLegacyTypeTracker.dump(pw); pw.decreaseIndent(); pw.println(); synchronized (this) { pw.println("NetworkTransitionWakeLock is currently " + (mNetTransitionWakeLock.isHeld() ? "" : "not ") + "held."); pw.println("It was last requested for "+mNetTransitionWakeLockCausedBy); } pw.println(); mTethering.dump(fd, pw, args); if (mInetLog != null) { pw.println(); pw.println("Inet condition reports:"); pw.increaseIndent(); for(int i = 0; i < mInetLog.size(); i++) { pw.println(mInetLog.get(i)); } pw.decreaseIndent(); } } private boolean isLiveNetworkAgent(NetworkAgentInfo nai, String msg) { if (nai.network == null) return false; final NetworkAgentInfo officialNai; synchronized (mNetworkForNetId) { officialNai = mNetworkForNetId.get(nai.network.netId); } if (officialNai != null && officialNai.equals(nai)) return true; if (officialNai != null || VDBG) { loge(msg + " - isLiveNetworkAgent found mismatched netId: " + officialNai + " - " + nai); } return false; } private boolean isRequest(NetworkRequest request) { return mNetworkRequests.get(request).isRequest; } // must be stateless - things change under us. private class NetworkStateTrackerHandler extends Handler { public NetworkStateTrackerHandler(Looper looper) { super(looper); } @Override public void handleMessage(Message msg) { NetworkInfo info; switch (msg.what) { case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { handleAsyncChannelHalfConnect(msg); break; } case AsyncChannel.CMD_CHANNEL_DISCONNECT: { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai != null) nai.asyncChannel.disconnect(); break; } case AsyncChannel.CMD_CHANNEL_DISCONNECTED: { handleAsyncChannelDisconnected(msg); break; } case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai == null) { loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent"); } else { updateCapabilities(nai, (NetworkCapabilities)msg.obj); } break; } case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai == null) { loge("NetworkAgent not found for EVENT_NETWORK_PROPERTIES_CHANGED"); } else { if (VDBG) { log("Update of LinkProperties for " + nai.name() + "; created=" + nai.created); } LinkProperties oldLp = nai.linkProperties; synchronized (nai) { nai.linkProperties = (LinkProperties)msg.obj; } if (nai.created) updateLinkProperties(nai, oldLp); } break; } case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai == null) { loge("EVENT_NETWORK_INFO_CHANGED from unknown NetworkAgent"); break; } info = (NetworkInfo) msg.obj; updateNetworkInfo(nai, info); break; } case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai == null) { loge("EVENT_NETWORK_SCORE_CHANGED from unknown NetworkAgent"); break; } Integer score = (Integer) msg.obj; if (score != null) updateNetworkScore(nai, score.intValue()); break; } case NetworkAgent.EVENT_UID_RANGES_ADDED: { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai == null) { loge("EVENT_UID_RANGES_ADDED from unknown NetworkAgent"); break; } try { mNetd.addVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); } catch (Exception e) { // Never crash! loge("Exception in addVpnUidRanges: " + e); } break; } case NetworkAgent.EVENT_UID_RANGES_REMOVED: { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai == null) { loge("EVENT_UID_RANGES_REMOVED from unknown NetworkAgent"); break; } try { mNetd.removeVpnUidRanges(nai.network.netId, (UidRange[])msg.obj); } catch (Exception e) { // Never crash! loge("Exception in removeVpnUidRanges: " + e); } break; } case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai == null) { loge("EVENT_SET_EXPLICITLY_SELECTED from unknown NetworkAgent"); break; } if (nai.created && !nai.networkMisc.explicitlySelected) { loge("ERROR: created network explicitly selected."); } nai.networkMisc.explicitlySelected = true; break; } case NetworkMonitor.EVENT_NETWORK_TESTED: { NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; if (isLiveNetworkAgent(nai, "EVENT_NETWORK_VALIDATED")) { boolean valid = (msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID); if (valid) { if (DBG) log("Validated " + nai.name()); final boolean previouslyValidated = nai.validated; final int previousScore = nai.getCurrentScore(); nai.validated = true; rematchNetworkAndRequests(nai, !previouslyValidated); // If score has changed, rebroadcast to NetworkFactories. b/17726566 if (nai.getCurrentScore() != previousScore) { sendUpdatedScoreToFactories(nai); } } updateInetCondition(nai, valid); // Let the NetworkAgent know the state of its network nai.asyncChannel.sendMessage( android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS, (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), 0, null); } break; } case NetworkMonitor.EVENT_NETWORK_LINGER_COMPLETE: { NetworkAgentInfo nai = (NetworkAgentInfo)msg.obj; if (isLiveNetworkAgent(nai, "EVENT_NETWORK_LINGER_COMPLETE")) { handleLingerComplete(nai); } break; } case NetworkMonitor.EVENT_PROVISIONING_NOTIFICATION: { if (msg.arg1 == 0) { setProvNotificationVisibleIntent(false, msg.arg2, 0, null, null); } else { NetworkAgentInfo nai = null; synchronized (mNetworkForNetId) { nai = mNetworkForNetId.get(msg.arg2); } if (nai == null) { loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); break; } setProvNotificationVisibleIntent(true, msg.arg2, nai.networkInfo.getType(), nai.networkInfo.getExtraInfo(), (PendingIntent)msg.obj); } break; } case NetworkStateTracker.EVENT_STATE_CHANGED: { info = (NetworkInfo) msg.obj; NetworkInfo.State state = info.getState(); if (VDBG || (state == NetworkInfo.State.CONNECTED) || (state == NetworkInfo.State.DISCONNECTED) || (state == NetworkInfo.State.SUSPENDED)) { log("ConnectivityChange for " + info.getTypeName() + ": " + state + "/" + info.getDetailedState()); } EventLogTags.writeConnectivityStateChanged( info.getType(), info.getSubtype(), info.getDetailedState().ordinal()); if (info.isConnectedToProvisioningNetwork()) { /** * TODO: Create ConnectivityManager.TYPE_MOBILE_PROVISIONING * for now its an in between network, its a network that * is actually a default network but we don't want it to be * announced as such to keep background applications from * trying to use it. It turns out that some still try so we * take the additional step of clearing any default routes * to the link that may have incorrectly setup by the lower * levels. */ LinkProperties lp = getLinkPropertiesForTypeInternal(info.getType()); if (DBG) { log("EVENT_STATE_CHANGED: connected to provisioning network, lp=" + lp); } // Clear any default routes setup by the radio so // any activity by applications trying to use this // connection will fail until the provisioning network // is enabled. /* for (RouteInfo r : lp.getRoutes()) { removeRoute(lp, r, TO_DEFAULT_TABLE, mNetTrackers[info.getType()].getNetwork().netId); } */ } else if (state == NetworkInfo.State.DISCONNECTED) { } else if (state == NetworkInfo.State.SUSPENDED) { } else if (state == NetworkInfo.State.CONNECTED) { // handleConnect(info); } notifyLockdownVpn(null); break; } case NetworkStateTracker.EVENT_CONFIGURATION_CHANGED: { info = (NetworkInfo) msg.obj; // TODO: Temporary allowing network configuration // change not resetting sockets. // @see bug/4455071 /* handleConnectivityChange(info.getType(), mCurrentLinkProperties[info.getType()], false); */ break; } } } } private void handleAsyncChannelHalfConnect(Message msg) { AsyncChannel ac = (AsyncChannel) msg.obj; if (mNetworkFactoryInfos.containsKey(msg.replyTo)) { if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { if (VDBG) log("NetworkFactory connected"); // A network factory has connected. Send it all current NetworkRequests. for (NetworkRequestInfo nri : mNetworkRequests.values()) { if (nri.isRequest == false) continue; NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); ac.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, (nai != null ? nai.getCurrentScore() : 0), 0, nri.request); } } else { loge("Error connecting NetworkFactory"); mNetworkFactoryInfos.remove(msg.obj); } } else if (mNetworkAgentInfos.containsKey(msg.replyTo)) { if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { if (VDBG) log("NetworkAgent connected"); // A network agent has requested a connection. Establish the connection. mNetworkAgentInfos.get(msg.replyTo).asyncChannel. sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); } else { loge("Error connecting NetworkAgent"); NetworkAgentInfo nai = mNetworkAgentInfos.remove(msg.replyTo); if (nai != null) { synchronized (mNetworkForNetId) { mNetworkForNetId.remove(nai.network.netId); } // Just in case. mLegacyTypeTracker.remove(nai); } } } } private void handleAsyncChannelDisconnected(Message msg) { NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); if (nai != null) { if (DBG) { log(nai.name() + " got DISCONNECTED, was satisfying " + nai.networkRequests.size()); } // A network agent has disconnected. if (nai.created) { // Tell netd to clean up the configuration for this network // (routing rules, DNS, etc). try { mNetd.removeNetwork(nai.network.netId); } catch (Exception e) { loge("Exception removing network: " + e); } } // TODO - if we move the logic to the network agent (have them disconnect // because they lost all their requests or because their score isn't good) // then they would disconnect organically, report their new state and then // disconnect the channel. if (nai.networkInfo.isConnected()) { nai.networkInfo.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); } if (isDefaultNetwork(nai)) { mDefaultInetConditionPublished = 0; } notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED); mNetworkAgentInfos.remove(msg.replyTo); updateClat(null, nai.linkProperties, nai); mLegacyTypeTracker.remove(nai); synchronized (mNetworkForNetId) { mNetworkForNetId.remove(nai.network.netId); } // Since we've lost the network, go through all the requests that // it was satisfying and see if any other factory can satisfy them. // TODO: This logic may be better replaced with a call to rematchAllNetworksAndRequests final ArrayList toActivate = new ArrayList(); for (int i = 0; i < nai.networkRequests.size(); i++) { NetworkRequest request = nai.networkRequests.valueAt(i); NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(request.requestId); if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { if (DBG) { log("Checking for replacement network to handle request " + request ); } mNetworkForRequestId.remove(request.requestId); sendUpdatedScoreToFactories(request, 0); NetworkAgentInfo alternative = null; for (Map.Entry entry : mNetworkAgentInfos.entrySet()) { NetworkAgentInfo existing = (NetworkAgentInfo)entry.getValue(); if (existing.networkInfo.isConnected() && request.networkCapabilities.satisfiedByNetworkCapabilities( existing.networkCapabilities) && (alternative == null || alternative.getCurrentScore() < existing.getCurrentScore())) { alternative = existing; } } if (alternative != null) { if (DBG) log(" found replacement in " + alternative.name()); if (!toActivate.contains(alternative)) { toActivate.add(alternative); } } } } if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { removeDataActivityTracking(nai); mActiveDefaultNetwork = ConnectivityManager.TYPE_NONE; notifyLockdownVpn(nai); requestNetworkTransitionWakelock(nai.name()); } for (NetworkAgentInfo networkToActivate : toActivate) { networkToActivate.networkLingered.clear(); networkToActivate.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); rematchNetworkAndRequests(networkToActivate, false); } } } private void handleRegisterNetworkRequest(Message msg) { final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); final NetworkCapabilities newCap = nri.request.networkCapabilities; int score = 0; // Check for the best currently alive network that satisfies this request NetworkAgentInfo bestNetwork = null; for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { if (DBG) log("handleRegisterNetworkRequest checking " + network.name()); if (newCap.satisfiedByNetworkCapabilities(network.networkCapabilities)) { if (DBG) log("apparently satisfied. currentScore=" + network.getCurrentScore()); if ((bestNetwork == null) || bestNetwork.getCurrentScore() < network.getCurrentScore()) { if (!nri.isRequest) { // Not setting bestNetwork here as a listening NetworkRequest may be // satisfied by multiple Networks. Instead the request is added to // each satisfying Network and notified about each. network.addRequest(nri.request); notifyNetworkCallback(network, nri); } else { bestNetwork = network; } } } } if (bestNetwork != null) { if (DBG) log("using " + bestNetwork.name()); if (bestNetwork.networkInfo.isConnected()) { // Cancel any lingering so the linger timeout doesn't teardown this network // even though we have a request for it. bestNetwork.networkLingered.clear(); bestNetwork.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); } // TODO: This logic may be better replaced with a call to rematchNetworkAndRequests bestNetwork.addRequest(nri.request); mNetworkForRequestId.put(nri.request.requestId, bestNetwork); notifyNetworkCallback(bestNetwork, nri); score = bestNetwork.getCurrentScore(); if (nri.request.legacyType != TYPE_NONE) { mLegacyTypeTracker.add(nri.request.legacyType, bestNetwork); } } mNetworkRequests.put(nri.request, nri); if (nri.isRequest) { if (DBG) log("sending new NetworkRequest to factories"); for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, nri.request); } } } private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid) { NetworkRequestInfo nri = mNetworkRequests.get(request); if (nri != null) { if (Process.SYSTEM_UID != callingUid && nri.mUid != callingUid) { if (DBG) log("Attempt to release unowned NetworkRequest " + request); return; } if (DBG) log("releasing NetworkRequest " + request); nri.unlinkDeathRecipient(); mNetworkRequests.remove(request); if (nri.isRequest) { // Find all networks that are satisfying this request and remove the request // from their request lists. for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { if (nai.networkRequests.get(nri.request.requestId) != null) { nai.networkRequests.remove(nri.request.requestId); if (DBG) { log(" Removing from current network " + nai.name() + ", leaving " + nai.networkRequests.size() + " requests."); } // check if has any requests remaining and if not, // disconnect (unless it's a VPN). boolean keep = nai.isVPN(); for (int i = 0; i < nai.networkRequests.size() && !keep; i++) { NetworkRequest r = nai.networkRequests.valueAt(i); if (isRequest(r)) keep = true; } if (!keep) { if (DBG) log("no live requests for " + nai.name() + "; disconnecting"); nai.asyncChannel.disconnect(); } } } // Maintain the illusion. When this request arrived, we might have preteneded // that a network connected to serve it, even though the network was already // connected. Now that this request has gone away, we might have to pretend // that the network disconnected. LegacyTypeTracker will generate that // phatom disconnect for this type. NetworkAgentInfo nai = mNetworkForRequestId.get(nri.request.requestId); if (nai != null) { mNetworkForRequestId.remove(nri.request.requestId); if (nri.request.legacyType != TYPE_NONE) { mLegacyTypeTracker.remove(nri.request.legacyType, nai); } } for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, nri.request); } } else { // listens don't have a singular affectedNetwork. Check all networks to see // if this listen request applies and remove it. for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { nai.networkRequests.remove(nri.request.requestId); } } callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_RELEASED); } } private class InternalHandler extends Handler { public InternalHandler(Looper looper) { super(looper); } @Override public void handleMessage(Message msg) { NetworkInfo info; switch (msg.what) { case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { String causedBy = null; synchronized (ConnectivityService.this) { if (msg.arg1 == mNetTransitionWakeLockSerialNumber && mNetTransitionWakeLock.isHeld()) { mNetTransitionWakeLock.release(); causedBy = mNetTransitionWakeLockCausedBy; } else { break; } } if (msg.what == EVENT_EXPIRE_NET_TRANSITION_WAKELOCK) { log("Failed to find a new network - expiring NetTransition Wakelock"); } else { log("NetTransition Wakelock (" + (causedBy == null ? "unknown" : causedBy) + " cleared because we found a replacement network"); } break; } case EVENT_APPLY_GLOBAL_HTTP_PROXY: { handleDeprecatedGlobalHttpProxy(); break; } case EVENT_SET_DEPENDENCY_MET: { boolean met = (msg.arg1 == ENABLED); handleSetDependencyMet(msg.arg2, met); break; } case EVENT_SEND_STICKY_BROADCAST_INTENT: { Intent intent = (Intent)msg.obj; sendStickyBroadcast(intent); break; } case EVENT_SET_POLICY_DATA_ENABLE: { final int networkType = msg.arg1; final boolean enabled = msg.arg2 == ENABLED; handleSetPolicyDataEnable(networkType, enabled); break; } case EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: { int tag = mEnableFailFastMobileDataTag.get(); if (msg.arg1 == tag) { MobileDataStateTracker mobileDst = (MobileDataStateTracker) mNetTrackers[ConnectivityManager.TYPE_MOBILE]; if (mobileDst != null) { mobileDst.setEnableFailFastMobileData(msg.arg2); } } else { log("EVENT_ENABLE_FAIL_FAST_MOBILE_DATA: stale arg1:" + msg.arg1 + " != tag:" + tag); } break; } case EVENT_SAMPLE_INTERVAL_ELAPSED: { handleNetworkSamplingTimeout(); break; } case EVENT_PROXY_HAS_CHANGED: { handleApplyDefaultProxy((ProxyInfo)msg.obj); break; } case EVENT_REGISTER_NETWORK_FACTORY: { handleRegisterNetworkFactory((NetworkFactoryInfo)msg.obj); break; } case EVENT_UNREGISTER_NETWORK_FACTORY: { handleUnregisterNetworkFactory((Messenger)msg.obj); break; } case EVENT_REGISTER_NETWORK_AGENT: { handleRegisterNetworkAgent((NetworkAgentInfo)msg.obj); break; } case EVENT_REGISTER_NETWORK_REQUEST: case EVENT_REGISTER_NETWORK_LISTENER: { handleRegisterNetworkRequest(msg); break; } case EVENT_RELEASE_NETWORK_REQUEST: { handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1); break; } case EVENT_SYSTEM_READY: { for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { nai.networkMonitor.systemReady = true; } break; } } } } // javadoc from interface public int tether(String iface) { ConnectivityManager.enforceTetherChangePermission(mContext); if (isTetheringSupported()) { return mTethering.tether(iface); } else { return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; } } // javadoc from interface public int untether(String iface) { ConnectivityManager.enforceTetherChangePermission(mContext); if (isTetheringSupported()) { return mTethering.untether(iface); } else { return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; } } // javadoc from interface public int getLastTetherError(String iface) { enforceTetherAccessPermission(); if (isTetheringSupported()) { return mTethering.getLastTetherError(iface); } else { return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; } } // TODO - proper iface API for selection by property, inspection, etc public String[] getTetherableUsbRegexs() { enforceTetherAccessPermission(); if (isTetheringSupported()) { return mTethering.getTetherableUsbRegexs(); } else { return new String[0]; } } public String[] getTetherableWifiRegexs() { enforceTetherAccessPermission(); if (isTetheringSupported()) { return mTethering.getTetherableWifiRegexs(); } else { return new String[0]; } } public String[] getTetherableBluetoothRegexs() { enforceTetherAccessPermission(); if (isTetheringSupported()) { return mTethering.getTetherableBluetoothRegexs(); } else { return new String[0]; } } public int setUsbTethering(boolean enable) { ConnectivityManager.enforceTetherChangePermission(mContext); if (isTetheringSupported()) { return mTethering.setUsbTethering(enable); } else { return ConnectivityManager.TETHER_ERROR_UNSUPPORTED; } } // TODO - move iface listing, queries, etc to new module // javadoc from interface public String[] getTetherableIfaces() { enforceTetherAccessPermission(); return mTethering.getTetherableIfaces(); } public String[] getTetheredIfaces() { enforceTetherAccessPermission(); return mTethering.getTetheredIfaces(); } public String[] getTetheringErroredIfaces() { enforceTetherAccessPermission(); return mTethering.getErroredIfaces(); } public String[] getTetheredDhcpRanges() { enforceConnectivityInternalPermission(); return mTethering.getTetheredDhcpRanges(); } // if ro.tether.denied = true we default to no tethering // gservices could set the secure setting to 1 though to enable it on a build where it // had previously been turned off. public boolean isTetheringSupported() { enforceTetherAccessPermission(); int defaultVal = (SystemProperties.get("ro.tether.denied").equals("true") ? 0 : 1); boolean tetherEnabledInSettings = (Settings.Global.getInt(mContext.getContentResolver(), Settings.Global.TETHER_SUPPORTED, defaultVal) != 0) && !mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_TETHERING); return tetherEnabledInSettings && ((mTethering.getTetherableUsbRegexs().length != 0 || mTethering.getTetherableWifiRegexs().length != 0 || mTethering.getTetherableBluetoothRegexs().length != 0) && mTethering.getUpstreamIfaceTypes().length != 0); } // Called when we lose the default network and have no replacement yet. // This will automatically be cleared after X seconds or a new default network // becomes CONNECTED, whichever happens first. The timer is started by the // first caller and not restarted by subsequent callers. private void requestNetworkTransitionWakelock(String forWhom) { int serialNum = 0; synchronized (this) { if (mNetTransitionWakeLock.isHeld()) return; serialNum = ++mNetTransitionWakeLockSerialNumber; mNetTransitionWakeLock.acquire(); mNetTransitionWakeLockCausedBy = forWhom; } mHandler.sendMessageDelayed(mHandler.obtainMessage( EVENT_EXPIRE_NET_TRANSITION_WAKELOCK, serialNum, 0), mNetTransitionWakeLockTimeout); return; } // 100 percent is full good, 0 is full bad. public void reportInetCondition(int networkType, int percentage) { if (percentage > 50) return; // don't handle good network reports NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); if (nai != null) reportBadNetwork(nai.network); } public void reportBadNetwork(Network network) { enforceAccessPermission(); enforceInternetPermission(); if (network == null) return; final int uid = Binder.getCallingUid(); NetworkAgentInfo nai = null; synchronized (mNetworkForNetId) { nai = mNetworkForNetId.get(network.netId); } if (nai == null) return; if (DBG) log("reportBadNetwork(" + nai.name() + ") by " + uid); synchronized (nai) { // Validating an uncreated network could result in a call to rematchNetworkAndRequests() // which isn't meant to work on uncreated networks. if (!nai.created) return; if (isNetworkBlocked(nai, uid)) return; nai.networkMonitor.sendMessage(NetworkMonitor.CMD_FORCE_REEVALUATION, uid); } } public ProxyInfo 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) { ProxyInfo ret = mGlobalProxy; if ((ret == null) && !mDefaultProxyDisabled) ret = mDefaultProxy; return ret; } } public void setGlobalProxy(ProxyInfo proxyProperties) { enforceConnectivityInternalPermission(); synchronized (mProxyLock) { if (proxyProperties == mGlobalProxy) return; if (proxyProperties != null && proxyProperties.equals(mGlobalProxy)) return; if (mGlobalProxy != null && mGlobalProxy.equals(proxyProperties)) return; String host = ""; int port = 0; String exclList = ""; String pacFileUrl = ""; if (proxyProperties != null && (!TextUtils.isEmpty(proxyProperties.getHost()) || (proxyProperties.getPacFileUrl() != null))) { if (!proxyProperties.isValid()) { if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); return; } mGlobalProxy = new ProxyInfo(proxyProperties); host = mGlobalProxy.getHost(); port = mGlobalProxy.getPort(); exclList = mGlobalProxy.getExclusionListAsString(); if (proxyProperties.getPacFileUrl() != null) { pacFileUrl = proxyProperties.getPacFileUrl().toString(); } } else { mGlobalProxy = null; } ContentResolver res = mContext.getContentResolver(); final long token = Binder.clearCallingIdentity(); try { Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST, host); Settings.Global.putInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, port); Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST, exclList); Settings.Global.putString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC, pacFileUrl); } finally { Binder.restoreCallingIdentity(token); } if (mGlobalProxy == null) { proxyProperties = mDefaultProxy; } sendProxyBroadcast(proxyProperties); } } private void loadGlobalProxy() { ContentResolver res = mContext.getContentResolver(); String host = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_HOST); int port = Settings.Global.getInt(res, Settings.Global.GLOBAL_HTTP_PROXY_PORT, 0); String exclList = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_EXCLUSION_LIST); String pacFileUrl = Settings.Global.getString(res, Settings.Global.GLOBAL_HTTP_PROXY_PAC); if (!TextUtils.isEmpty(host) || !TextUtils.isEmpty(pacFileUrl)) { ProxyInfo proxyProperties; if (!TextUtils.isEmpty(pacFileUrl)) { proxyProperties = new ProxyInfo(pacFileUrl); } else { proxyProperties = new ProxyInfo(host, port, exclList); } if (!proxyProperties.isValid()) { if (DBG) log("Invalid proxy properties, ignoring: " + proxyProperties.toString()); return; } synchronized (mProxyLock) { mGlobalProxy = proxyProperties; } } } public ProxyInfo getGlobalProxy() { // this information is already available as a world read/writable jvm property // so this API change wouldn't have a benifit. It also breaks the passing // of proxy info to all the JVMs. // enforceAccessPermission(); synchronized (mProxyLock) { return mGlobalProxy; } } private void handleApplyDefaultProxy(ProxyInfo proxy) { if (proxy != null && TextUtils.isEmpty(proxy.getHost()) && (proxy.getPacFileUrl() == null)) { proxy = null; } synchronized (mProxyLock) { if (mDefaultProxy != null && mDefaultProxy.equals(proxy)) return; if (mDefaultProxy == proxy) return; // catches repeated nulls if (proxy != null && !proxy.isValid()) { if (DBG) log("Invalid proxy properties, ignoring: " + proxy.toString()); return; } // This call could be coming from the PacManager, containing the port of the local // proxy. If this new proxy matches the global proxy then copy this proxy to the // global (to get the correct local port), and send a broadcast. // TODO: Switch PacManager to have its own message to send back rather than // reusing EVENT_HAS_CHANGED_PROXY and this call to handleApplyDefaultProxy. if ((mGlobalProxy != null) && (proxy != null) && (proxy.getPacFileUrl() != null) && proxy.getPacFileUrl().equals(mGlobalProxy.getPacFileUrl())) { mGlobalProxy = proxy; sendProxyBroadcast(mGlobalProxy); return; } 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; } } ProxyInfo p = new ProxyInfo(data[0], proxyPort, ""); setGlobalProxy(p); } } private void sendProxyBroadcast(ProxyInfo proxy) { if (proxy == null) proxy = new ProxyInfo("", 0, ""); if (mPacManager.setCurrentProxyScriptUrl(proxy)) return; if (DBG) log("sending Proxy Broadcast for " + proxy); Intent intent = new Intent(Proxy.PROXY_CHANGE_ACTION); intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); intent.putExtra(Proxy.EXTRA_PROXY_INFO, proxy); final long ident = Binder.clearCallingIdentity(); try { mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); } finally { Binder.restoreCallingIdentity(ident); } } private static class SettingsObserver extends ContentObserver { private int mWhat; private Handler mHandler; SettingsObserver(Handler handler, int what) { super(handler); mHandler = handler; mWhat = what; } void observe(Context context) { ContentResolver resolver = context.getContentResolver(); resolver.registerContentObserver(Settings.Global.getUriFor( Settings.Global.HTTP_PROXY), false, this); } @Override public void onChange(boolean selfChange) { mHandler.obtainMessage(mWhat).sendToTarget(); } } private static void log(String s) { Slog.d(TAG, s); } private static void loge(String s) { Slog.e(TAG, s); } 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 if (TextUtils.equals(feature, Phone.FEATURE_ENABLE_EMERGENCY)) { usedNetworkType = ConnectivityManager.TYPE_MOBILE_EMERGENCY; } 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 checkNotNull(T value, String message) { if (value == null) { throw new NullPointerException(message); } return value; } /** * 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); } } /** * Set whether the current VPN package has the ability to launch VPNs without * user intervention. This method is used by system UIs and not available * in ConnectivityManager. Permissions are checked in Vpn class. * @hide */ @Override public void setVpnPackageAuthorization(boolean authorized) { int user = UserHandle.getUserId(Binder.getCallingUid()); synchronized(mVpns) { mVpns.get(user).setPackageAuthorization(authorized); } } /** * Configure a TUN interface and return its file descriptor. Parameters * are encoded and opaque to this class. This method is used by VpnBuilder * and not available in ConnectivityManager. Permissions are checked in * Vpn class. * @hide */ @Override public ParcelFileDescriptor establishVpn(VpnConfig config) { throwIfLockdownEnabled(); int user = UserHandle.getUserId(Binder.getCallingUid()); synchronized(mVpns) { return mVpns.get(user).establish(config); } } /** * Start legacy VPN, controlling native daemons as needed. Creates a * secondary thread to perform connection work, returning quickly. */ @Override public void startLegacyVpn(VpnProfile profile) { throwIfLockdownEnabled(); final LinkProperties egress = getActiveLinkProperties(); if (egress == null) { throw new IllegalStateException("Missing active network connection"); } int user = UserHandle.getUserId(Binder.getCallingUid()); synchronized(mVpns) { mVpns.get(user).startLegacyVpn(profile, mKeyStore, egress); } } /** * Return the information of the ongoing legacy VPN. This method is used * by VpnSettings and not available in ConnectivityManager. Permissions * are checked in Vpn class. * @hide */ @Override public LegacyVpnInfo getLegacyVpnInfo() { throwIfLockdownEnabled(); int user = UserHandle.getUserId(Binder.getCallingUid()); synchronized(mVpns) { return mVpns.get(user).getLegacyVpnInfo(); } } /** * Returns the information of the ongoing VPN. This method is used by VpnDialogs and * not available in ConnectivityManager. * Permissions are checked in Vpn class. * @hide */ @Override public VpnConfig getVpnConfig() { int user = UserHandle.getUserId(Binder.getCallingUid()); synchronized(mVpns) { return mVpns.get(user).getVpnConfig(); } } @Override public boolean updateLockdownVpn() { if (Binder.getCallingUid() != Process.SYSTEM_UID) { Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); return false; } // Tear down existing lockdown if profile was removed mLockdownEnabled = LockdownVpnTracker.isEnabled(); if (mLockdownEnabled) { if (!mKeyStore.isUnlocked()) { Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker"); return false; } final String profileName = new String(mKeyStore.get(Credentials.LOCKDOWN_VPN)); final VpnProfile profile = VpnProfile.decode( profileName, mKeyStore.get(Credentials.VPN + profileName)); int user = UserHandle.getUserId(Binder.getCallingUid()); synchronized(mVpns) { setLockdownTracker(new LockdownVpnTracker(mContext, mNetd, this, mVpns.get(user), profile)); } } else { setLockdownTracker(null); } return true; } /** * Internally set new {@link LockdownVpnTracker}, shutting down any existing * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. */ private void setLockdownTracker(LockdownVpnTracker tracker) { // Shutdown any existing tracker final LockdownVpnTracker existing = mLockdownTracker; mLockdownTracker = null; if (existing != null) { existing.shutdown(); } try { if (tracker != null) { mNetd.setFirewallEnabled(true); mNetd.setFirewallInterfaceRule("lo", true); mLockdownTracker = tracker; mLockdownTracker.init(); } else { mNetd.setFirewallEnabled(false); } } catch (RemoteException e) { // ignored; NMS lives inside system_server } } private void throwIfLockdownEnabled() { if (mLockdownEnabled) { throw new IllegalStateException("Unavailable in lockdown mode"); } } public void supplyMessenger(int networkType, Messenger messenger) { enforceConnectivityInternalPermission(); if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { mNetTrackers[networkType].supplyMessenger(messenger); } } public int findConnectionTypeForIface(String iface) { enforceConnectivityInternalPermission(); if (TextUtils.isEmpty(iface)) return ConnectivityManager.TYPE_NONE; synchronized(mNetworkForNetId) { for (int i = 0; i < mNetworkForNetId.size(); i++) { NetworkAgentInfo nai = mNetworkForNetId.valueAt(i); LinkProperties lp = nai.linkProperties; if (lp != null && iface.equals(lp.getInterfaceName()) && nai.networkInfo != null) { return nai.networkInfo.getType(); } } } return ConnectivityManager.TYPE_NONE; } /** * Have mobile data fail fast if enabled. * * @param enabled DctConstants.ENABLED/DISABLED */ private void setEnableFailFastMobileData(int enabled) { int tag; if (enabled == DctConstants.ENABLED) { tag = mEnableFailFastMobileDataTag.incrementAndGet(); } else { tag = mEnableFailFastMobileDataTag.get(); } mHandler.sendMessage(mHandler.obtainMessage(EVENT_ENABLE_FAIL_FAST_MOBILE_DATA, tag, enabled)); } @Override public int checkMobileProvisioning(int suggestedTimeOutMs) { // TODO: Remove? Any reason to trigger a provisioning check? return -1; } private static final String NOTIFICATION_ID = "CaptivePortal.Notification"; private volatile boolean mIsNotificationVisible = false; private void setProvNotificationVisible(boolean visible, int networkType, String action) { if (DBG) { log("setProvNotificationVisible: E visible=" + visible + " networkType=" + networkType + " action=" + action); } Intent intent = new Intent(action); PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); // Concatenate the range of types onto the range of NetIDs. int id = MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); setProvNotificationVisibleIntent(visible, id, networkType, null, pendingIntent); } /** * Show or hide network provisioning notificaitons. * * @param id an identifier that uniquely identifies this notification. This must match * between show and hide calls. We use the NetID value but for legacy callers * we concatenate the range of types with the range of NetIDs. */ private void setProvNotificationVisibleIntent(boolean visible, int id, int networkType, String extraInfo, PendingIntent intent) { if (DBG) { log("setProvNotificationVisibleIntent: E visible=" + visible + " networkType=" + networkType + " extraInfo=" + extraInfo); } Resources r = Resources.getSystem(); NotificationManager notificationManager = (NotificationManager) mContext .getSystemService(Context.NOTIFICATION_SERVICE); if (visible) { CharSequence title; CharSequence details; int icon; Notification notification = new Notification(); switch (networkType) { case ConnectivityManager.TYPE_WIFI: title = r.getString(R.string.wifi_available_sign_in, 0); details = r.getString(R.string.network_available_sign_in_detailed, extraInfo); icon = R.drawable.stat_notify_wifi_in_range; break; case ConnectivityManager.TYPE_MOBILE: case ConnectivityManager.TYPE_MOBILE_HIPRI: title = r.getString(R.string.network_available_sign_in, 0); // TODO: Change this to pull from NetworkInfo once a printable // name has been added to it details = mTelephonyManager.getNetworkOperatorName(); icon = R.drawable.stat_notify_rssi_in_range; break; default: title = r.getString(R.string.network_available_sign_in, 0); details = r.getString(R.string.network_available_sign_in_detailed, extraInfo); icon = R.drawable.stat_notify_rssi_in_range; break; } notification.when = 0; notification.icon = icon; notification.flags = Notification.FLAG_AUTO_CANCEL; notification.tickerText = title; notification.color = mContext.getResources().getColor( com.android.internal.R.color.system_notification_accent_color); notification.setLatestEventInfo(mContext, title, details, notification.contentIntent); notification.contentIntent = intent; try { notificationManager.notify(NOTIFICATION_ID, id, notification); } catch (NullPointerException npe) { loge("setNotificaitionVisible: visible notificationManager npe=" + npe); npe.printStackTrace(); } } else { try { notificationManager.cancel(NOTIFICATION_ID, id); } catch (NullPointerException npe) { loge("setNotificaitionVisible: cancel notificationManager npe=" + npe); npe.printStackTrace(); } } mIsNotificationVisible = visible; } /** Location to an updatable file listing carrier provisioning urls. * An example: * * * * http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s * http://www.google.com * */ private static final String PROVISIONING_URL_PATH = "/data/misc/radio/provisioning_urls.xml"; private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); /** XML tag for root element. */ private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; /** XML tag for individual url */ private static final String TAG_PROVISIONING_URL = "provisioningUrl"; /** XML tag for redirected url */ private static final String TAG_REDIRECTED_URL = "redirectedUrl"; /** XML attribute for mcc */ private static final String ATTR_MCC = "mcc"; /** XML attribute for mnc */ private static final String ATTR_MNC = "mnc"; private static final int REDIRECTED_PROVISIONING = 1; private static final int PROVISIONING = 2; private String getProvisioningUrlBaseFromFile(int type) { FileReader fileReader = null; XmlPullParser parser = null; Configuration config = mContext.getResources().getConfiguration(); String tagType; switch (type) { case PROVISIONING: tagType = TAG_PROVISIONING_URL; break; case REDIRECTED_PROVISIONING: tagType = TAG_REDIRECTED_URL; break; default: throw new RuntimeException("getProvisioningUrlBaseFromFile: Unexpected parameter " + type); } try { fileReader = new FileReader(mProvisioningUrlFile); parser = Xml.newPullParser(); parser.setInput(fileReader); XmlUtils.beginDocument(parser, TAG_PROVISIONING_URLS); while (true) { XmlUtils.nextElement(parser); String element = parser.getName(); if (element == null) break; if (element.equals(tagType)) { String mcc = parser.getAttributeValue(null, ATTR_MCC); try { if (mcc != null && Integer.parseInt(mcc) == config.mcc) { String mnc = parser.getAttributeValue(null, ATTR_MNC); if (mnc != null && Integer.parseInt(mnc) == config.mnc) { parser.next(); if (parser.getEventType() == XmlPullParser.TEXT) { return parser.getText(); } } } } catch (NumberFormatException e) { loge("NumberFormatException in getProvisioningUrlBaseFromFile: " + e); } } } return null; } catch (FileNotFoundException e) { loge("Carrier Provisioning Urls file not found"); } catch (XmlPullParserException e) { loge("Xml parser exception reading Carrier Provisioning Urls file: " + e); } catch (IOException e) { loge("I/O exception reading Carrier Provisioning Urls file: " + e); } finally { if (fileReader != null) { try { fileReader.close(); } catch (IOException e) {} } } return null; } @Override public String getMobileRedirectedProvisioningUrl() { enforceConnectivityInternalPermission(); String url = getProvisioningUrlBaseFromFile(REDIRECTED_PROVISIONING); if (TextUtils.isEmpty(url)) { url = mContext.getResources().getString(R.string.mobile_redirected_provisioning_url); } return url; } @Override public String getMobileProvisioningUrl() { enforceConnectivityInternalPermission(); String url = getProvisioningUrlBaseFromFile(PROVISIONING); if (TextUtils.isEmpty(url)) { url = mContext.getResources().getString(R.string.mobile_provisioning_url); log("getMobileProvisioningUrl: mobile_provisioining_url from resource =" + url); } else { log("getMobileProvisioningUrl: mobile_provisioning_url from File =" + url); } // populate the iccid, imei and phone number in the provisioning url. if (!TextUtils.isEmpty(url)) { String phoneNumber = mTelephonyManager.getLine1Number(); if (TextUtils.isEmpty(phoneNumber)) { phoneNumber = "0000000000"; } url = String.format(url, mTelephonyManager.getSimSerialNumber() /* ICCID */, mTelephonyManager.getDeviceId() /* IMEI */, phoneNumber /* Phone numer */); } return url; } @Override public void setProvisioningNotificationVisible(boolean visible, int networkType, String action) { enforceConnectivityInternalPermission(); final long ident = Binder.clearCallingIdentity(); try { setProvNotificationVisible(visible, networkType, action); } finally { Binder.restoreCallingIdentity(ident); } } @Override public void setAirplaneMode(boolean enable) { enforceConnectivityInternalPermission(); final long ident = Binder.clearCallingIdentity(); try { final ContentResolver cr = mContext.getContentResolver(); Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, enable ? 1 : 0); Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); intent.putExtra("state", enable); mContext.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(mHandler.getLooper(), mContext, mNetd, this, userId); mVpns.put(userId, userVpn); } } private void onUserStop(int userId) { synchronized(mVpns) { Vpn userVpn = mVpns.get(userId); if (userVpn == null) { loge("Stopping user has no VPN"); return; } mVpns.delete(userId); } } private BroadcastReceiver mUserIntentReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { final String action = intent.getAction(); final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); if (userId == UserHandle.USER_NULL) return; if (Intent.ACTION_USER_STARTING.equals(action)) { onUserStart(userId); } else if (Intent.ACTION_USER_STOPPING.equals(action)) { onUserStop(userId); } } }; @Override public LinkQualityInfo getLinkQualityInfo(int networkType) { enforceAccessPermission(); if (isNetworkTypeValid(networkType) && mNetTrackers[networkType] != null) { return mNetTrackers[networkType].getLinkQualityInfo(); } else { return null; } } @Override public LinkQualityInfo getActiveLinkQualityInfo() { enforceAccessPermission(); if (isNetworkTypeValid(mActiveDefaultNetwork) && mNetTrackers[mActiveDefaultNetwork] != null) { return mNetTrackers[mActiveDefaultNetwork].getLinkQualityInfo(); } else { return null; } } @Override public LinkQualityInfo[] getAllLinkQualityInfo() { enforceAccessPermission(); final ArrayList 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() { if (SAMPLE_DBG) log("Sampling interval elapsed, updating statistics .."); // initialize list of interfaces .. Map mapIfaceToSample = new HashMap(); for (NetworkStateTracker tracker : mNetTrackers) { if (tracker != null) { String ifaceName = tracker.getNetworkInterfaceName(); if (ifaceName != null) { mapIfaceToSample.put(ifaceName, null); } } } // Read samples for all interfaces SamplingDataTracker.getSamplingSnapshots(mapIfaceToSample); // process samples for all networks for (NetworkStateTracker tracker : mNetTrackers) { if (tracker != null) { String ifaceName = tracker.getNetworkInterfaceName(); SamplingDataTracker.SamplingSnapshot ss = mapIfaceToSample.get(ifaceName); if (ss != null) { // end the previous sampling cycle tracker.stopSampling(ss); // start a new sampling cycle .. tracker.startSampling(ss); } } } if (SAMPLE_DBG) log("Done."); int samplingIntervalInSeconds = Settings.Global.getInt(mContext.getContentResolver(), Settings.Global.CONNECTIVITY_SAMPLING_INTERVAL_IN_SECONDS, DEFAULT_SAMPLING_INTERVAL_IN_SECONDS); if (SAMPLE_DBG) { log("Setting timer for " + String.valueOf(samplingIntervalInSeconds) + "seconds"); } setAlarm(samplingIntervalInSeconds * 1000, mSampleIntervalElapsedIntent); } /** * Sets a network sampling alarm. */ void setAlarm(int timeoutInMilliseconds, PendingIntent intent) { long wakeupTime = SystemClock.elapsedRealtime() + timeoutInMilliseconds; int alarmType; if (Resources.getSystem().getBoolean( R.bool.config_networkSamplingWakesDevice)) { alarmType = AlarmManager.ELAPSED_REALTIME_WAKEUP; } else { alarmType = AlarmManager.ELAPSED_REALTIME; } mAlarmManager.set(alarmType, wakeupTime, intent); } private final HashMap mNetworkFactoryInfos = new HashMap(); private final HashMap mNetworkRequests = new HashMap(); private static class NetworkFactoryInfo { public final String name; public final Messenger messenger; public final AsyncChannel asyncChannel; public NetworkFactoryInfo(String name, Messenger messenger, AsyncChannel asyncChannel) { this.name = name; this.messenger = messenger; this.asyncChannel = asyncChannel; } } /** * Tracks info about the requester. * Also used to notice when the calling process dies so we can self-expire */ private class NetworkRequestInfo implements IBinder.DeathRecipient { static final boolean REQUEST = true; static final boolean LISTEN = false; final NetworkRequest request; IBinder mBinder; final int mPid; final int mUid; final Messenger messenger; final boolean isRequest; NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder, boolean isRequest) { super(); messenger = m; request = r; mBinder = binder; mPid = getCallingPid(); mUid = getCallingUid(); this.isRequest = isRequest; try { mBinder.linkToDeath(this, 0); } catch (RemoteException e) { binderDied(); } } void unlinkDeathRecipient() { mBinder.unlinkToDeath(this, 0); } public void binderDied() { log("ConnectivityService NetworkRequestInfo binderDied(" + request + ", " + mBinder + ")"); releaseNetworkRequest(request); } public String toString() { return (isRequest ? "Request" : "Listen") + " from uid/pid:" + mUid + "/" + mPid + " for " + request; } } @Override public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, Messenger messenger, int timeoutMs, IBinder binder, int legacyType) { if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) == false) { enforceConnectivityInternalPermission(); } else { enforceChangePermission(); } networkCapabilities = new NetworkCapabilities(networkCapabilities); // if UID is restricted, don't allow them to bring up metered APNs if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED) == false) { final int uidRules; final int uid = Binder.getCallingUid(); synchronized(mRulesLock) { uidRules = mUidRules.get(uid, RULE_ALLOW_ALL); } if ((uidRules & RULE_REJECT_METERED) != 0) { // we could silently fail or we can filter the available nets to only give // them those they have access to. Chose the more useful networkCapabilities.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); } } if (timeoutMs < 0 || timeoutMs > ConnectivityManager.MAX_NETWORK_REQUEST_TIMEOUT_MS) { throw new IllegalArgumentException("Bad timeout specified"); } NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, nextNetworkRequestId()); if (DBG) log("requestNetwork for " + networkRequest); NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, NetworkRequestInfo.REQUEST); mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); if (timeoutMs > 0) { mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, nri), timeoutMs); } return networkRequest; } @Override public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, PendingIntent operation) { // TODO return null; } @Override public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, Messenger messenger, IBinder binder) { enforceAccessPermission(); NetworkRequest networkRequest = new NetworkRequest(new NetworkCapabilities( networkCapabilities), TYPE_NONE, nextNetworkRequestId()); if (DBG) log("listenForNetwork for " + networkRequest); NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder, NetworkRequestInfo.LISTEN); mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); return networkRequest; } @Override public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, PendingIntent operation) { } @Override public void releaseNetworkRequest(NetworkRequest networkRequest) { mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 0, networkRequest)); } @Override public void registerNetworkFactory(Messenger messenger, String name) { enforceConnectivityInternalPermission(); NetworkFactoryInfo nfi = new NetworkFactoryInfo(name, messenger, new AsyncChannel()); mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_FACTORY, nfi)); } private void handleRegisterNetworkFactory(NetworkFactoryInfo nfi) { if (DBG) log("Got NetworkFactory Messenger for " + nfi.name); mNetworkFactoryInfos.put(nfi.messenger, nfi); nfi.asyncChannel.connect(mContext, mTrackerHandler, nfi.messenger); } @Override public void unregisterNetworkFactory(Messenger messenger) { enforceConnectivityInternalPermission(); mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_FACTORY, messenger)); } private void handleUnregisterNetworkFactory(Messenger messenger) { NetworkFactoryInfo nfi = mNetworkFactoryInfos.remove(messenger); if (nfi == null) { loge("Failed to find Messenger in unregisterNetworkFactory"); return; } if (DBG) log("unregisterNetworkFactory for " + nfi.name); } /** * NetworkAgentInfo supporting a request by requestId. * These have already been vetted (their Capabilities satisfy the request) * and the are the highest scored network available. * the are keyed off the Requests requestId. */ private final SparseArray mNetworkForRequestId = new SparseArray(); private final SparseArray mNetworkForNetId = new SparseArray(); // NetworkAgentInfo keyed off its connecting messenger // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays private final HashMap mNetworkAgentInfos = new HashMap(); private final NetworkRequest mDefaultRequest; private boolean isDefaultNetwork(NetworkAgentInfo nai) { return mNetworkForRequestId.get(mDefaultRequest.requestId) == nai; } public void registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, LinkProperties linkProperties, NetworkCapabilities networkCapabilities, int currentScore, NetworkMisc networkMisc) { enforceConnectivityInternalPermission(); NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), new NetworkInfo(networkInfo), new LinkProperties(linkProperties), new NetworkCapabilities(networkCapabilities), currentScore, mContext, mTrackerHandler, new NetworkMisc(networkMisc)); synchronized (this) { nai.networkMonitor.systemReady = mSystemReady; } if (DBG) log("registerNetworkAgent " + nai); mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, nai)); } private void handleRegisterNetworkAgent(NetworkAgentInfo na) { if (VDBG) log("Got NetworkAgent Messenger"); mNetworkAgentInfos.put(na.messenger, na); assignNextNetId(na); na.asyncChannel.connect(mContext, mTrackerHandler, na.messenger); NetworkInfo networkInfo = na.networkInfo; na.networkInfo = null; updateNetworkInfo(na, networkInfo); } private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties oldLp) { LinkProperties newLp = networkAgent.linkProperties; int netId = networkAgent.network.netId; // The NetworkAgentInfo does not know whether clatd is running on its network or not. Before // we do anything else, make sure its LinkProperties are accurate. mClat.fixupLinkProperties(networkAgent, oldLp); updateInterfaces(newLp, oldLp, netId); updateMtu(newLp, oldLp); // TODO - figure out what to do for clat // for (LinkProperties lp : newLp.getStackedLinks()) { // updateMtu(lp, null); // } updateTcpBufferSizes(networkAgent); final boolean flushDns = updateRoutes(newLp, oldLp, netId); updateDnses(newLp, oldLp, netId, flushDns); updateClat(newLp, oldLp, networkAgent); if (isDefaultNetwork(networkAgent)) handleApplyDefaultProxy(newLp.getHttpProxy()); // TODO - move this check to cover the whole function if (!Objects.equals(newLp, oldLp)) { notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); } } private void updateClat(LinkProperties newLp, LinkProperties oldLp, NetworkAgentInfo na) { final boolean wasRunningClat = mClat.isRunningClat(na); final boolean shouldRunClat = Nat464Xlat.requiresClat(na); if (!wasRunningClat && shouldRunClat) { // Start clatd. If it's already been started but is not running yet, this is a no-op. mClat.startClat(na); } else if (wasRunningClat && !shouldRunClat) { mClat.stopClat(); } } private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId) { CompareResult interfaceDiff = new CompareResult(); if (oldLp != null) { interfaceDiff = oldLp.compareAllInterfaceNames(newLp); } else if (newLp != null) { interfaceDiff.added = newLp.getAllInterfaceNames(); } for (String iface : interfaceDiff.added) { try { if (DBG) log("Adding iface " + iface + " to network " + netId); mNetd.addInterfaceToNetwork(iface, netId); } catch (Exception e) { loge("Exception adding interface: " + e); } } for (String iface : interfaceDiff.removed) { try { if (DBG) log("Removing iface " + iface + " from network " + netId); mNetd.removeInterfaceFromNetwork(iface, netId); } catch (Exception e) { loge("Exception removing interface: " + e); } } } /** * Have netd update routes from oldLp to newLp. * @return true if routes changed between oldLp and newLp */ private boolean updateRoutes(LinkProperties newLp, LinkProperties oldLp, int netId) { CompareResult routeDiff = new CompareResult(); if (oldLp != null) { routeDiff = oldLp.compareAllRoutes(newLp); } else if (newLp != null) { routeDiff.added = newLp.getAllRoutes(); } // add routes before removing old in case it helps with continuous connectivity // do this twice, adding non-nexthop routes first, then routes they are dependent on for (RouteInfo route : routeDiff.added) { if (route.hasGateway()) continue; if (DBG) log("Adding Route [" + route + "] to network " + netId); try { mNetd.addRoute(netId, route); } catch (Exception e) { if ((route.getDestination().getAddress() instanceof Inet4Address) || VDBG) { loge("Exception in addRoute for non-gateway: " + e); } } } for (RouteInfo route : routeDiff.added) { if (route.hasGateway() == false) continue; if (DBG) log("Adding Route [" + route + "] to network " + netId); try { mNetd.addRoute(netId, route); } catch (Exception e) { if ((route.getGateway() instanceof Inet4Address) || VDBG) { loge("Exception in addRoute for gateway: " + e); } } } for (RouteInfo route : routeDiff.removed) { if (DBG) log("Removing Route [" + route + "] from network " + netId); try { mNetd.removeRoute(netId, route); } catch (Exception e) { loge("Exception in removeRoute: " + e); } } return !routeDiff.added.isEmpty() || !routeDiff.removed.isEmpty(); } private void updateDnses(LinkProperties newLp, LinkProperties oldLp, int netId, boolean flush) { if (oldLp == null || (newLp.isIdenticalDnses(oldLp) == false)) { Collection dnses = newLp.getDnsServers(); if (dnses.size() == 0 && mDefaultDns != null) { dnses = new ArrayList(); dnses.add(mDefaultDns); if (DBG) { loge("no dns provided for netId " + netId + ", so using defaults"); } } if (DBG) log("Setting Dns servers for network " + netId + " to " + dnses); try { mNetd.setDnsServersForNetwork(netId, NetworkUtils.makeStrings(dnses), newLp.getDomains()); } catch (Exception e) { loge("Exception in setDnsServersForNetwork: " + e); } NetworkAgentInfo defaultNai = mNetworkForRequestId.get(mDefaultRequest.requestId); if (defaultNai != null && defaultNai.network.netId == netId) { setDefaultDnsSystemProperties(dnses); } flushVmDnsCache(); } else if (flush) { try { mNetd.flushNetworkDnsCache(netId); } catch (Exception e) { loge("Exception in flushNetworkDnsCache: " + e); } flushVmDnsCache(); } } private void setDefaultDnsSystemProperties(Collection dnses) { int last = 0; for (InetAddress dns : dnses) { ++last; String key = "net.dns" + last; String value = dns.getHostAddress(); SystemProperties.set(key, value); } for (int i = last + 1; i <= mNumDnsEntries; ++i) { String key = "net.dns" + i; SystemProperties.set(key, ""); } mNumDnsEntries = last; } private void updateCapabilities(NetworkAgentInfo networkAgent, NetworkCapabilities networkCapabilities) { // TODO - turn this on in MR1 when we have more dogfooding time. // rematchAllNetworksAndRequests(); if (!Objects.equals(networkAgent.networkCapabilities, networkCapabilities)) { synchronized (networkAgent) { networkAgent.networkCapabilities = networkCapabilities; } notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED); } } private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { for (int i = 0; i < nai.networkRequests.size(); i++) { NetworkRequest nr = nai.networkRequests.valueAt(i); // Don't send listening requests to factories. b/17393458 if (!isRequest(nr)) continue; sendUpdatedScoreToFactories(nr, nai.getCurrentScore()); } } private void sendUpdatedScoreToFactories(NetworkRequest networkRequest, int score) { if (VDBG) log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); for (NetworkFactoryInfo nfi : mNetworkFactoryInfos.values()) { nfi.asyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, 0, networkRequest); } } private void callCallbackForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, int notificationType) { if (nri.messenger == null) return; // Default request has no msgr Bundle bundle = new Bundle(); bundle.putParcelable(NetworkRequest.class.getSimpleName(), new NetworkRequest(nri.request)); Message msg = Message.obtain(); if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL && notificationType != ConnectivityManager.CALLBACK_RELEASED) { bundle.putParcelable(Network.class.getSimpleName(), networkAgent.network); } switch (notificationType) { case ConnectivityManager.CALLBACK_LOSING: { msg.arg1 = 30 * 1000; // TODO - read this from NetworkMonitor break; } case ConnectivityManager.CALLBACK_CAP_CHANGED: { bundle.putParcelable(NetworkCapabilities.class.getSimpleName(), new NetworkCapabilities(networkAgent.networkCapabilities)); break; } case ConnectivityManager.CALLBACK_IP_CHANGED: { bundle.putParcelable(LinkProperties.class.getSimpleName(), new LinkProperties(networkAgent.linkProperties)); break; } } msg.what = notificationType; msg.setData(bundle); try { if (VDBG) { log("sending notification " + notifyTypeToName(notificationType) + " for " + nri.request); } nri.messenger.send(msg); } catch (RemoteException e) { // may occur naturally in the race of binder death. loge("RemoteException caught trying to send a callback msg for " + nri.request); } } private void teardownUnneededNetwork(NetworkAgentInfo nai) { for (int i = 0; i < nai.networkRequests.size(); i++) { NetworkRequest nr = nai.networkRequests.valueAt(i); // Ignore listening requests. if (!isRequest(nr)) continue; loge("Dead network still had at least " + nr); break; } nai.asyncChannel.disconnect(); } private void handleLingerComplete(NetworkAgentInfo oldNetwork) { if (oldNetwork == null) { loge("Unknown NetworkAgentInfo in handleLingerComplete"); return; } if (DBG) log("handleLingerComplete for " + oldNetwork.name()); teardownUnneededNetwork(oldNetwork); } private void makeDefault(NetworkAgentInfo newNetwork) { if (DBG) log("Switching to new default network: " + newNetwork); mActiveDefaultNetwork = newNetwork.networkInfo.getType(); setupDataActivityTracking(newNetwork); try { mNetd.setDefaultNetId(newNetwork.network.netId); } catch (Exception e) { loge("Exception setting default network :" + e); } notifyLockdownVpn(newNetwork); handleApplyDefaultProxy(newNetwork.linkProperties.getHttpProxy()); updateTcpBufferSizes(newNetwork); } // Handles a network appearing or improving its score. // // - Evaluates all current NetworkRequests that can be // satisfied by newNetwork, and reassigns to newNetwork // any such requests for which newNetwork is the best. // // - Lingers any Networks that as a result are no longer // needed. A network is needed if it is the best network for // one or more NetworkRequests, or if it is a VPN. // // - Tears down newNetwork if it just became validated // (i.e. nascent==true) but turns out to be unneeded. // Does not tear down newNetwork if it is unvalidated, // because future validation may improve newNetwork's // score enough that it is needed. // // NOTE: This function only adds NetworkRequests that "newNetwork" could satisfy, // it does not remove NetworkRequests that other Networks could better satisfy. // If you need to handle decreases in score, use {@link rematchAllNetworksAndRequests}. // This function should be used when possible instead of {@code rematchAllNetworksAndRequests} // as it performs better by a factor of the number of Networks. // // @param nascent indicates if newNetwork just became validated, in which case it should be // torn down if unneeded. If nascent is false, no action is taken if newNetwork // is found to be unneeded by this call. Presumably, in this case, either: // - newNetwork is unvalidated (and left alive), or // - the NetworkRequests keeping newNetwork alive have been transitioned to // another higher scoring network by another call to rematchNetworkAndRequests() // and this other call also lingered newNetwork. private void rematchNetworkAndRequests(NetworkAgentInfo newNetwork, boolean nascent) { if (!newNetwork.created) loge("ERROR: uncreated network being rematched."); if (nascent && !newNetwork.validated) loge("ERROR: nascent network not validated."); boolean keep = newNetwork.isVPN(); boolean isNewDefault = false; if (DBG) log("rematching " + newNetwork.name()); // Find and migrate to this Network any NetworkRequests for // which this network is now the best. ArrayList affectedNetworks = new ArrayList(); if (VDBG) log(" network has: " + newNetwork.networkCapabilities); for (NetworkRequestInfo nri : mNetworkRequests.values()) { NetworkAgentInfo currentNetwork = mNetworkForRequestId.get(nri.request.requestId); if (newNetwork == currentNetwork) { if (DBG) { log("Network " + newNetwork.name() + " was already satisfying" + " request " + nri.request.requestId + ". No change."); } keep = true; continue; } // check if it satisfies the NetworkCapabilities if (VDBG) log(" checking if request is satisfied: " + nri.request); if (nri.request.networkCapabilities.satisfiedByNetworkCapabilities( newNetwork.networkCapabilities)) { if (!nri.isRequest) { // This is not a request, it's a callback listener. // Add it to newNetwork regardless of score. newNetwork.addRequest(nri.request); continue; } // next check if it's better than any current network we're using for // this request if (VDBG) { log("currentScore = " + (currentNetwork != null ? currentNetwork.getCurrentScore() : 0) + ", newScore = " + newNetwork.getCurrentScore()); } if (currentNetwork == null || currentNetwork.getCurrentScore() < newNetwork.getCurrentScore()) { if (currentNetwork != null) { if (DBG) log(" accepting network in place of " + currentNetwork.name()); currentNetwork.networkRequests.remove(nri.request.requestId); currentNetwork.networkLingered.add(nri.request); affectedNetworks.add(currentNetwork); } else { if (DBG) log(" accepting network in place of null"); } mNetworkForRequestId.put(nri.request.requestId, newNetwork); newNetwork.addRequest(nri.request); if (nri.isRequest && nri.request.legacyType != TYPE_NONE) { mLegacyTypeTracker.add(nri.request.legacyType, newNetwork); } keep = true; // Tell NetworkFactories about the new score, so they can stop // trying to connect if they know they cannot match it. // TODO - this could get expensive if we have alot of requests for this // network. Think about if there is a way to reduce this. Push // netid->request mapping to each factory? sendUpdatedScoreToFactories(nri.request, newNetwork.getCurrentScore()); if (mDefaultRequest.requestId == nri.request.requestId) { isNewDefault = true; // TODO: Remove following line. It's redundant with makeDefault call. mActiveDefaultNetwork = newNetwork.networkInfo.getType(); if (newNetwork.linkProperties != null) { updateTcpBufferSizes(newNetwork); setDefaultDnsSystemProperties( newNetwork.linkProperties.getDnsServers()); } else { setDefaultDnsSystemProperties(new ArrayList()); } // Maintain the illusion: since the legacy API only // understands one network at a time, we must pretend // that the current default network disconnected before // the new one connected. if (currentNetwork != null) { mLegacyTypeTracker.remove(currentNetwork.networkInfo.getType(), currentNetwork); } mDefaultInetConditionPublished = newNetwork.validated ? 100 : 0; mLegacyTypeTracker.add(newNetwork.networkInfo.getType(), newNetwork); notifyLockdownVpn(newNetwork); } } } } // Linger any networks that are no longer needed. for (NetworkAgentInfo nai : affectedNetworks) { boolean teardown = !nai.isVPN() && nai.validated; for (int i = 0; i < nai.networkRequests.size() && teardown; i++) { NetworkRequest nr = nai.networkRequests.valueAt(i); try { if (isRequest(nr)) { teardown = false; } } catch (Exception e) { loge("Request " + nr + " not found in mNetworkRequests."); loge(" it came from request list of " + nai.name()); } } if (teardown) { nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_LINGER); notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING); } else { // not going to linger, so kill the list of linger networks.. only // notify them of linger if it happens as the result of gaining another, // but if they transition and old network stays up, don't tell them of linger // or very delayed loss nai.networkLingered.clear(); if (VDBG) log("Lingered for " + nai.name() + " cleared"); } } if (keep) { if (isNewDefault) { // Notify system services that this network is up. makeDefault(newNetwork); synchronized (ConnectivityService.this) { // have a new default network, release the transition wakelock in // a second if it's held. The second pause is to allow apps // to reconnect over the new network if (mNetTransitionWakeLock.isHeld()) { mHandler.sendMessageDelayed(mHandler.obtainMessage( EVENT_CLEAR_NET_TRANSITION_WAKELOCK, mNetTransitionWakeLockSerialNumber, 0), 1000); } } } // Notify battery stats service about this network, both the normal // interface and any stacked links. // TODO: Avoid redoing this; this must only be done once when a network comes online. try { final IBatteryStats bs = BatteryStatsService.getService(); final int type = newNetwork.networkInfo.getType(); final String baseIface = newNetwork.linkProperties.getInterfaceName(); bs.noteNetworkInterfaceType(baseIface, type); for (LinkProperties stacked : newNetwork.linkProperties.getStackedLinks()) { final String stackedIface = stacked.getInterfaceName(); bs.noteNetworkInterfaceType(stackedIface, type); NetworkStatsFactory.noteStackedIface(stackedIface, baseIface); } } catch (RemoteException ignored) { } notifyNetworkCallbacks(newNetwork, ConnectivityManager.CALLBACK_AVAILABLE); } else if (nascent) { // Only tear down newly validated networks here. Leave unvalidated to either become // validated (and get evaluated against peers, one losing here) or // NetworkMonitor reports a bad network and we tear it down then. // Networks that have been up for a while and are validated should be torn down via // the lingering process so communication on that network is given time to wrap up. // TODO: Could teardown unvalidated networks when their NetworkCapabilities // satisfy no NetworkRequests. if (DBG) log("Validated network turns out to be unwanted. Tear it down."); teardownUnneededNetwork(newNetwork); } } // Attempt to rematch all Networks with NetworkRequests. This may result in Networks // being disconnected. // If only one Network's score or capabilities have been modified since the last time // this function was called, pass this Network in via the "changed" arugment, otherwise // pass null. // If only one Network has been changed but its NetworkCapabilities have not changed, // pass in the Network's score (from getCurrentScore()) prior to the change via // "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null. private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) { // TODO: This may get slow. The "changed" parameter is provided for future optimization // to avoid the slowness. It is not simply enough to process just "changed", for // example in the case where "changed"'s score decreases and another network should begin // satifying a NetworkRequest that "changed" currently satisfies. // Optimization: Only reprocess "changed" if its score improved. This is safe because it // can only add more NetworkRequests satisfied by "changed", and this is exactly what // rematchNetworkAndRequests() handles. if (changed != null && oldScore < changed.getCurrentScore()) { rematchNetworkAndRequests(changed, false); } else { for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { rematchNetworkAndRequests(nai, false); } } } private void updateInetCondition(NetworkAgentInfo nai, boolean valid) { // Don't bother updating until we've graduated to validated at least once. if (!nai.validated) return; // For now only update icons for default connection. // TODO: Update WiFi and cellular icons separately. b/17237507 if (!isDefaultNetwork(nai)) return; int newInetCondition = valid ? 100 : 0; // Don't repeat publish. if (newInetCondition == mDefaultInetConditionPublished) return; mDefaultInetConditionPublished = newInetCondition; sendInetConditionBroadcast(nai.networkInfo); } private void notifyLockdownVpn(NetworkAgentInfo nai) { if (mLockdownTracker != null) { if (nai != null && nai.isVPN()) { mLockdownTracker.onVpnStateChanged(nai.networkInfo); } else { mLockdownTracker.onNetworkInfoChanged(); } } } private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo newInfo) { NetworkInfo.State state = newInfo.getState(); NetworkInfo oldInfo = null; synchronized (networkAgent) { oldInfo = networkAgent.networkInfo; networkAgent.networkInfo = newInfo; } notifyLockdownVpn(networkAgent); if (oldInfo != null && oldInfo.getState() == state) { if (VDBG) log("ignoring duplicate network state non-change"); return; } if (DBG) { log(networkAgent.name() + " EVENT_NETWORK_INFO_CHANGED, going from " + (oldInfo == null ? "null" : oldInfo.getState()) + " to " + state); } if (state == NetworkInfo.State.CONNECTED && !networkAgent.created) { try { // This should never fail. Specifying an already in use NetID will cause failure. if (networkAgent.isVPN()) { mNetd.createVirtualNetwork(networkAgent.network.netId, !networkAgent.linkProperties.getDnsServers().isEmpty(), (networkAgent.networkMisc == null || !networkAgent.networkMisc.allowBypass)); } else { mNetd.createPhysicalNetwork(networkAgent.network.netId); } } catch (Exception e) { loge("Error creating network " + networkAgent.network.netId + ": " + e.getMessage()); return; } networkAgent.created = true; updateLinkProperties(networkAgent, null); notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); networkAgent.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_CONNECTED); if (networkAgent.isVPN()) { // Temporarily disable the default proxy (not global). synchronized (mProxyLock) { if (!mDefaultProxyDisabled) { mDefaultProxyDisabled = true; if (mGlobalProxy == null && mDefaultProxy != null) { sendProxyBroadcast(null); } } } // TODO: support proxy per network. } // Consider network even though it is not yet validated. rematchNetworkAndRequests(networkAgent, false); } else if (state == NetworkInfo.State.DISCONNECTED || state == NetworkInfo.State.SUSPENDED) { networkAgent.asyncChannel.disconnect(); if (networkAgent.isVPN()) { synchronized (mProxyLock) { if (mDefaultProxyDisabled) { mDefaultProxyDisabled = false; if (mGlobalProxy == null && mDefaultProxy != null) { sendProxyBroadcast(mDefaultProxy); } } } } } } private void updateNetworkScore(NetworkAgentInfo nai, int score) { if (DBG) log("updateNetworkScore for " + nai.name() + " to " + score); if (score < 0) { loge("updateNetworkScore for " + nai.name() + " got a negative score (" + score + "). Bumping score to min of 0"); score = 0; } final int oldScore = nai.getCurrentScore(); nai.setCurrentScore(score); if (nai.created) rematchAllNetworksAndRequests(nai, oldScore); sendUpdatedScoreToFactories(nai); } // notify only this one new request of the current state protected void notifyNetworkCallback(NetworkAgentInfo nai, NetworkRequestInfo nri) { int notifyType = ConnectivityManager.CALLBACK_AVAILABLE; // TODO - read state from monitor to decide what to send. // if (nai.networkMonitor.isLingering()) { // notifyType = NetworkCallbacks.LOSING; // } else if (nai.networkMonitor.isEvaluating()) { // notifyType = NetworkCallbacks.callCallbackForRequest(request, nai, notifyType); // } callCallbackForRequest(nri, nai, notifyType); } private void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, boolean connected, int type) { // The NetworkInfo we actually send out has no bearing on the real // state of affairs. For example, if the default connection is mobile, // and a request for HIPRI has just gone away, we need to pretend that // HIPRI has just disconnected. So we need to set the type to HIPRI and // the state to DISCONNECTED, even though the network is of type MOBILE // and is still connected. NetworkInfo info = new NetworkInfo(nai.networkInfo); info.setType(type); if (connected) { info.setDetailedState(DetailedState.CONNECTED, null, info.getExtraInfo()); sendConnectedBroadcastDelayed(info, getConnectivityChangeDelay()); } else { info.setDetailedState(DetailedState.DISCONNECTED, null, info.getExtraInfo()); Intent intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION); intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, info); intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); if (info.isFailover()) { intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); nai.networkInfo.setFailover(false); } if (info.getReason() != null) { intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); } if (info.getExtraInfo() != null) { intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, info.getExtraInfo()); } NetworkAgentInfo newDefaultAgent = null; if (nai.networkRequests.get(mDefaultRequest.requestId) != null) { newDefaultAgent = mNetworkForRequestId.get(mDefaultRequest.requestId); if (newDefaultAgent != null) { intent.putExtra(ConnectivityManager.EXTRA_OTHER_NETWORK_INFO, newDefaultAgent.networkInfo); } else { intent.putExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, true); } } intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); final Intent immediateIntent = new Intent(intent); immediateIntent.setAction(CONNECTIVITY_ACTION_IMMEDIATE); sendStickyBroadcast(immediateIntent); sendStickyBroadcastDelayed(intent, getConnectivityChangeDelay()); if (newDefaultAgent != null) { sendConnectedBroadcastDelayed(newDefaultAgent.networkInfo, getConnectivityChangeDelay()); } } } protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { if (DBG) log("notifyType " + notifyTypeToName(notifyType) + " for " + networkAgent.name()); for (int i = 0; i < networkAgent.networkRequests.size(); i++) { NetworkRequest nr = networkAgent.networkRequests.valueAt(i); NetworkRequestInfo nri = mNetworkRequests.get(nr); if (VDBG) log(" sending notification for " + nr); callCallbackForRequest(nri, networkAgent, notifyType); } } private String notifyTypeToName(int notifyType) { switch (notifyType) { case ConnectivityManager.CALLBACK_PRECHECK: return "PRECHECK"; case ConnectivityManager.CALLBACK_AVAILABLE: return "AVAILABLE"; case ConnectivityManager.CALLBACK_LOSING: return "LOSING"; case ConnectivityManager.CALLBACK_LOST: return "LOST"; case ConnectivityManager.CALLBACK_UNAVAIL: return "UNAVAILABLE"; case ConnectivityManager.CALLBACK_CAP_CHANGED: return "CAP_CHANGED"; case ConnectivityManager.CALLBACK_IP_CHANGED: return "IP_CHANGED"; case ConnectivityManager.CALLBACK_RELEASED: return "RELEASED"; } return "UNKNOWN"; } private LinkProperties getLinkPropertiesForTypeInternal(int networkType) { NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); if (nai != null) { synchronized (nai) { return new LinkProperties(nai.linkProperties); } } return new LinkProperties(); } private NetworkInfo getNetworkInfoForType(int networkType) { if (!mLegacyTypeTracker.isTypeSupported(networkType)) return null; NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); if (nai != null) { NetworkInfo result = new NetworkInfo(nai.networkInfo); result.setType(networkType); return result; } else { NetworkInfo result = new NetworkInfo( networkType, 0, ConnectivityManager.getNetworkTypeName(networkType), ""); result.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); result.setIsAvailable(true); return result; } } private NetworkCapabilities getNetworkCapabilitiesForType(int networkType) { NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); if (nai != null) { synchronized (nai) { return new NetworkCapabilities(nai.networkCapabilities); } } return new NetworkCapabilities(); } @Override public boolean addVpnAddress(String address, int prefixLength) { throwIfLockdownEnabled(); int user = UserHandle.getUserId(Binder.getCallingUid()); synchronized (mVpns) { return mVpns.get(user).addAddress(address, prefixLength); } } @Override public boolean removeVpnAddress(String address, int prefixLength) { throwIfLockdownEnabled(); int user = UserHandle.getUserId(Binder.getCallingUid()); synchronized (mVpns) { return mVpns.get(user).removeAddress(address, prefixLength); } } }