| /* |
| * 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.RECEIVE_DATA_ACTIVITY_CHANGE; |
| import static android.content.pm.PackageManager.PERMISSION_GRANTED; |
| import static android.net.ConnectivityManager.CONNECTIVITY_ACTION; |
| import static android.net.ConnectivityManager.NETID_UNSET; |
| import static android.net.ConnectivityManager.PRIVATE_DNS_MODE_OPPORTUNISTIC; |
| import static android.net.ConnectivityManager.TYPE_ETHERNET; |
| import static android.net.ConnectivityManager.TYPE_NONE; |
| import static android.net.ConnectivityManager.TYPE_VPN; |
| import static android.net.ConnectivityManager.getNetworkTypeName; |
| import static android.net.ConnectivityManager.isNetworkTypeValid; |
| import static android.net.INetworkMonitor.NETWORK_VALIDATION_PROBE_PRIVDNS; |
| import static android.net.INetworkMonitor.NETWORK_VALIDATION_RESULT_PARTIAL; |
| import static android.net.INetworkMonitor.NETWORK_VALIDATION_RESULT_VALID; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_FOREGROUND; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_PARTIAL_CONNECTIVITY; |
| import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED; |
| import static android.net.NetworkCapabilities.TRANSPORT_CELLULAR; |
| import static android.net.NetworkCapabilities.TRANSPORT_VPN; |
| import static android.net.NetworkPolicyManager.RULE_NONE; |
| import static android.net.NetworkPolicyManager.uidRulesToString; |
| import static android.net.shared.NetworkMonitorUtils.isPrivateDnsValidationRequired; |
| import static android.os.Process.INVALID_UID; |
| import static android.system.OsConstants.IPPROTO_TCP; |
| import static android.system.OsConstants.IPPROTO_UDP; |
| |
| import static java.util.Map.Entry; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.app.AppOpsManager; |
| import android.app.BroadcastOptions; |
| import android.app.NotificationManager; |
| import android.app.PendingIntent; |
| import android.content.BroadcastReceiver; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.res.Configuration; |
| import android.database.ContentObserver; |
| import android.net.CaptivePortal; |
| import android.net.ConnectionInfo; |
| import android.net.ConnectivityDiagnosticsManager.ConnectivityReport; |
| import android.net.ConnectivityDiagnosticsManager.DataStallReport; |
| import android.net.ConnectivityManager; |
| import android.net.ICaptivePortal; |
| import android.net.IConnectivityDiagnosticsCallback; |
| import android.net.IConnectivityManager; |
| import android.net.IDnsResolver; |
| import android.net.IIpConnectivityMetrics; |
| import android.net.INetd; |
| import android.net.INetdEventCallback; |
| import android.net.INetworkManagementEventObserver; |
| import android.net.INetworkMonitor; |
| import android.net.INetworkMonitorCallbacks; |
| import android.net.INetworkPolicyListener; |
| import android.net.INetworkPolicyManager; |
| import android.net.INetworkStatsService; |
| import android.net.ISocketKeepaliveCallback; |
| import android.net.InetAddresses; |
| import android.net.IpMemoryStore; |
| import android.net.IpPrefix; |
| import android.net.LinkProperties; |
| import android.net.MatchAllNetworkSpecifier; |
| import android.net.NattSocketKeepalive; |
| import android.net.Network; |
| import android.net.NetworkAgent; |
| import android.net.NetworkAgentConfig; |
| import android.net.NetworkCapabilities; |
| import android.net.NetworkConfig; |
| import android.net.NetworkInfo; |
| import android.net.NetworkInfo.DetailedState; |
| import android.net.NetworkMonitorManager; |
| import android.net.NetworkPolicyManager; |
| import android.net.NetworkProvider; |
| import android.net.NetworkQuotaInfo; |
| import android.net.NetworkRequest; |
| import android.net.NetworkScore; |
| import android.net.NetworkSpecifier; |
| import android.net.NetworkStack; |
| import android.net.NetworkStackClient; |
| import android.net.NetworkState; |
| import android.net.NetworkUtils; |
| import android.net.NetworkWatchlistManager; |
| import android.net.PrivateDnsConfigParcel; |
| import android.net.ProxyInfo; |
| import android.net.RouteInfo; |
| import android.net.SocketKeepalive; |
| import android.net.TetheringManager; |
| import android.net.UidRange; |
| import android.net.Uri; |
| import android.net.VpnManager; |
| import android.net.VpnService; |
| import android.net.metrics.IpConnectivityLog; |
| import android.net.metrics.NetworkEvent; |
| import android.net.netlink.InetDiagMessage; |
| import android.net.shared.PrivateDnsConfig; |
| import android.net.util.LinkPropertiesUtils.CompareResult; |
| import android.net.util.MultinetworkPolicyTracker; |
| import android.net.util.NetdService; |
| import android.os.Binder; |
| import android.os.Build; |
| import android.os.Bundle; |
| 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.Parcelable; |
| import android.os.PersistableBundle; |
| import android.os.PowerManager; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.ResultReceiver; |
| import android.os.ServiceManager; |
| import android.os.ServiceSpecificException; |
| import android.os.ShellCallback; |
| import android.os.ShellCommand; |
| 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.ArraySet; |
| import android.util.LocalLog; |
| import android.util.Log; |
| import android.util.Pair; |
| 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.annotations.VisibleForTesting; |
| import com.android.internal.app.IBatteryStats; |
| import com.android.internal.logging.MetricsLogger; |
| import com.android.internal.net.LegacyVpnInfo; |
| import com.android.internal.net.VpnConfig; |
| import com.android.internal.net.VpnInfo; |
| import com.android.internal.net.VpnProfile; |
| import com.android.internal.util.ArrayUtils; |
| import com.android.internal.util.AsyncChannel; |
| import com.android.internal.util.DumpUtils; |
| import com.android.internal.util.IndentingPrintWriter; |
| import com.android.internal.util.LocationPermissionChecker; |
| import com.android.internal.util.MessageUtils; |
| import com.android.internal.util.XmlUtils; |
| import com.android.server.am.BatteryStatsService; |
| import com.android.server.connectivity.AutodestructReference; |
| import com.android.server.connectivity.DataConnectionStats; |
| import com.android.server.connectivity.DnsManager; |
| import com.android.server.connectivity.DnsManager.PrivateDnsValidationUpdate; |
| import com.android.server.connectivity.IpConnectivityMetrics; |
| import com.android.server.connectivity.KeepaliveTracker; |
| import com.android.server.connectivity.LingerMonitor; |
| import com.android.server.connectivity.MockableSystemProperties; |
| import com.android.server.connectivity.MultipathPolicyTracker; |
| import com.android.server.connectivity.NetworkAgentInfo; |
| import com.android.server.connectivity.NetworkDiagnostics; |
| import com.android.server.connectivity.NetworkNotificationManager; |
| import com.android.server.connectivity.NetworkNotificationManager.NotificationType; |
| import com.android.server.connectivity.NetworkRanker; |
| import com.android.server.connectivity.PermissionMonitor; |
| import com.android.server.connectivity.ProxyTracker; |
| import com.android.server.connectivity.Vpn; |
| import com.android.server.net.BaseNetdEventCallback; |
| import com.android.server.net.BaseNetworkObserver; |
| import com.android.server.net.LockdownVpnTracker; |
| import com.android.server.net.NetworkPolicyManagerInternal; |
| import com.android.server.utils.PriorityDump; |
| |
| import com.google.android.collect.Lists; |
| |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.FileNotFoundException; |
| import java.io.FileReader; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.net.Inet4Address; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.ConcurrentModificationException; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.SortedSet; |
| import java.util.StringJoiner; |
| import java.util.TreeSet; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * @hide |
| */ |
| public class ConnectivityService extends IConnectivityManager.Stub |
| implements PendingIntent.OnFinished { |
| private static final String TAG = ConnectivityService.class.getSimpleName(); |
| |
| private static final String DIAG_ARG = "--diag"; |
| public static final String SHORT_ARG = "--short"; |
| private static final String NETWORK_ARG = "networks"; |
| private static final String REQUEST_ARG = "requests"; |
| |
| private static final boolean DBG = true; |
| private static final boolean DDBG = Log.isLoggable(TAG, Log.DEBUG); |
| private static final boolean VDBG = Log.isLoggable(TAG, Log.VERBOSE); |
| |
| private static final boolean LOGD_BLOCKED_NETWORKINFO = true; |
| |
| /** |
| * Default URL to use for {@link #getCaptivePortalServerUrl()}. This should not be changed |
| * by OEMs for configuration purposes, as this value is overridden by |
| * Settings.Global.CAPTIVE_PORTAL_HTTP_URL. |
| * R.string.config_networkCaptivePortalServerUrl should be overridden instead for this purpose |
| * (preferably via runtime resource overlays). |
| */ |
| private static final String DEFAULT_CAPTIVE_PORTAL_HTTP_URL = |
| "http://connectivitycheck.gstatic.com/generate_204"; |
| |
| // 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"; |
| |
| // How long to wait before putting up a "This network doesn't have an Internet connection, |
| // connect anyway?" dialog after the user selects a network that doesn't validate. |
| private static final int PROMPT_UNVALIDATED_DELAY_MS = 8 * 1000; |
| |
| // How long to dismiss network notification. |
| private static final int TIMEOUT_NOTIFICATION_DELAY_MS = 20 * 1000; |
| |
| // Default to 30s linger time-out. Modifiable only for testing. |
| private static final String LINGER_DELAY_PROPERTY = "persist.netmon.linger"; |
| private static final int DEFAULT_LINGER_DELAY_MS = 30_000; |
| @VisibleForTesting |
| protected int mLingerDelayMs; // Can't be final, or test subclass constructors can't change it. |
| |
| // How long to delay to removal of a pending intent based request. |
| // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS |
| private final int mReleasePendingIntentDelayMs; |
| |
| private MockableSystemProperties mSystemProperties; |
| |
| @VisibleForTesting |
| protected final PermissionMonitor mPermissionMonitor; |
| |
| private KeyStore mKeyStore; |
| |
| @VisibleForTesting |
| @GuardedBy("mVpns") |
| protected final SparseArray<Vpn> mVpns = new SparseArray<>(); |
| |
| // TODO: investigate if mLockdownEnabled can be removed and replaced everywhere by |
| // a direct call to LockdownVpnTracker.isEnabled(). |
| @GuardedBy("mVpns") |
| private boolean mLockdownEnabled; |
| @GuardedBy("mVpns") |
| private LockdownVpnTracker mLockdownTracker; |
| |
| /** |
| * Stale copy of uid rules provided by NPMS. As long as they are accessed only in internal |
| * handler thread, they don't need a lock. |
| */ |
| private SparseIntArray mUidRules = new SparseIntArray(); |
| /** Flag indicating if background data is restricted. */ |
| private boolean mRestrictBackground; |
| |
| private final Context mContext; |
| private final Dependencies mDeps; |
| // 0 is full bad, 100 is full good |
| private int mDefaultInetConditionPublished = 0; |
| |
| private INetworkManagementService mNMS; |
| @VisibleForTesting |
| protected IDnsResolver mDnsResolver; |
| @VisibleForTesting |
| protected INetd mNetd; |
| private INetworkStatsService mStatsService; |
| private INetworkPolicyManager mPolicyManager; |
| private NetworkPolicyManagerInternal mPolicyManagerInternal; |
| |
| /** |
| * TestNetworkService (lazily) created upon first usage. Locked to prevent creation of multiple |
| * instances. |
| */ |
| @GuardedBy("mTNSLock") |
| private TestNetworkService mTNS; |
| |
| private final Object mTNSLock = new Object(); |
| |
| private String mCurrentTcpBufferSizes; |
| |
| private static final SparseArray<String> sMagicDecoderRing = MessageUtils.findMessageNames( |
| new Class[] { AsyncChannel.class, ConnectivityService.class, NetworkAgent.class, |
| NetworkAgentInfo.class }); |
| |
| private enum ReapUnvalidatedNetworks { |
| // Tear down networks that have no chance (e.g. even if validated) of becoming |
| // the highest scoring network satisfying a NetworkRequest. This should be passed when |
| // all networks have been rematched against all NetworkRequests. |
| REAP, |
| // Don't reap networks. This should be passed when some networks have not yet been |
| // rematched against all NetworkRequests. |
| DONT_REAP |
| } |
| |
| private enum UnneededFor { |
| LINGER, // Determine whether this network is unneeded and should be lingered. |
| TEARDOWN, // Determine whether this network is unneeded and should be torn down. |
| } |
| |
| /** |
| * 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; |
| |
| /** |
| * PAC manager has received new port. |
| */ |
| private static final int EVENT_PROXY_HAS_CHANGED = 16; |
| |
| /** |
| * used internally when registering NetworkProviders |
| * obj = NetworkProviderInfo |
| */ |
| private static final int EVENT_REGISTER_NETWORK_PROVIDER = 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 callback (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 NetworkProviders |
| * obj = Messenger |
| */ |
| private static final int EVENT_UNREGISTER_NETWORK_PROVIDER = 23; |
| |
| /** |
| * used internally to expire a wakelock when transitioning |
| * from one net to another. Expire happens when we fail to find |
| * a new network (typically after 1 minute) - |
| * EVENT_CLEAR_NET_TRANSITION_WAKELOCK happens if we had found |
| * a replacement network. |
| */ |
| private static final int EVENT_EXPIRE_NET_TRANSITION_WAKELOCK = 24; |
| |
| /** |
| * Used internally to indicate the system is ready. |
| */ |
| private static final int EVENT_SYSTEM_READY = 25; |
| |
| /** |
| * used to add a network request with a pending intent |
| * obj = NetworkRequestInfo |
| */ |
| private static final int EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT = 26; |
| |
| /** |
| * used to remove a pending intent and its associated network request. |
| * arg1 = UID of caller |
| * obj = PendingIntent |
| */ |
| private static final int EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT = 27; |
| |
| /** |
| * used to specify whether a network should be used even if unvalidated. |
| * arg1 = whether to accept the network if it's unvalidated (1 or 0) |
| * arg2 = whether to remember this choice in the future (1 or 0) |
| * obj = network |
| */ |
| private static final int EVENT_SET_ACCEPT_UNVALIDATED = 28; |
| |
| /** |
| * used to ask the user to confirm a connection to an unvalidated network. |
| * obj = network |
| */ |
| private static final int EVENT_PROMPT_UNVALIDATED = 29; |
| |
| /** |
| * used internally to (re)configure always-on networks. |
| */ |
| private static final int EVENT_CONFIGURE_ALWAYS_ON_NETWORKS = 30; |
| |
| /** |
| * used to add a network listener with a pending intent |
| * obj = NetworkRequestInfo |
| */ |
| private static final int EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT = 31; |
| |
| /** |
| * used to specify whether a network should not be penalized when it becomes unvalidated. |
| */ |
| private static final int EVENT_SET_AVOID_UNVALIDATED = 35; |
| |
| /** |
| * used to trigger revalidation of a network. |
| */ |
| private static final int EVENT_REVALIDATE_NETWORK = 36; |
| |
| // Handle changes in Private DNS settings. |
| private static final int EVENT_PRIVATE_DNS_SETTINGS_CHANGED = 37; |
| |
| // Handle private DNS validation status updates. |
| private static final int EVENT_PRIVATE_DNS_VALIDATION_UPDATE = 38; |
| |
| /** |
| * Used to handle onUidRulesChanged event from NetworkPolicyManagerService. |
| */ |
| private static final int EVENT_UID_RULES_CHANGED = 39; |
| |
| /** |
| * Used to handle onRestrictBackgroundChanged event from NetworkPolicyManagerService. |
| */ |
| private static final int EVENT_DATA_SAVER_CHANGED = 40; |
| |
| /** |
| * Event for NetworkMonitor/NetworkAgentInfo to inform ConnectivityService that the network has |
| * been tested. |
| * obj = {@link NetworkTestedResults} representing information sent from NetworkMonitor. |
| * data = PersistableBundle of extras passed from NetworkMonitor. If {@link |
| * NetworkMonitorCallbacks#notifyNetworkTested} is called, this will be null. |
| */ |
| private static final int EVENT_NETWORK_TESTED = 41; |
| |
| /** |
| * Event for NetworkMonitor/NetworkAgentInfo to inform ConnectivityService that the private DNS |
| * config was resolved. |
| * obj = PrivateDnsConfig |
| * arg2 = netid |
| */ |
| private static final int EVENT_PRIVATE_DNS_CONFIG_RESOLVED = 42; |
| |
| /** |
| * Request ConnectivityService display provisioning notification. |
| * arg1 = Whether to make the notification visible. |
| * arg2 = NetID. |
| * obj = Intent to be launched when notification selected by user, null if !arg1. |
| */ |
| private static final int EVENT_PROVISIONING_NOTIFICATION = 43; |
| |
| /** |
| * This event can handle dismissing notification by given network id. |
| */ |
| private static final int EVENT_TIMEOUT_NOTIFICATION = 44; |
| |
| /** |
| * Used to specify whether a network should be used even if connectivity is partial. |
| * arg1 = whether to accept the network if its connectivity is partial (1 for true or 0 for |
| * false) |
| * arg2 = whether to remember this choice in the future (1 for true or 0 for false) |
| * obj = network |
| */ |
| private static final int EVENT_SET_ACCEPT_PARTIAL_CONNECTIVITY = 45; |
| |
| /** |
| * Event for NetworkMonitor to inform ConnectivityService that the probe status has changed. |
| * Both of the arguments are bitmasks, and the value of bits come from |
| * INetworkMonitor.NETWORK_VALIDATION_PROBE_*. |
| * arg1 = A bitmask to describe which probes are completed. |
| * arg2 = A bitmask to describe which probes are successful. |
| */ |
| public static final int EVENT_PROBE_STATUS_CHANGED = 46; |
| |
| /** |
| * Argument for {@link #EVENT_PROVISIONING_NOTIFICATION} to indicate that the notification |
| * should be shown. |
| */ |
| private static final int PROVISIONING_NOTIFICATION_SHOW = 1; |
| |
| /** |
| * Argument for {@link #EVENT_PROVISIONING_NOTIFICATION} to indicate that the notification |
| * should be hidden. |
| */ |
| private static final int PROVISIONING_NOTIFICATION_HIDE = 0; |
| |
| private static String eventName(int what) { |
| return sMagicDecoderRing.get(what, Integer.toString(what)); |
| } |
| |
| private static IDnsResolver getDnsResolver() { |
| return IDnsResolver.Stub |
| .asInterface(ServiceManager.getService("dnsresolver")); |
| } |
| |
| /** Handler thread used for all of the handlers below. */ |
| @VisibleForTesting |
| protected final HandlerThread mHandlerThread; |
| /** Handler used for internal events. */ |
| final private InternalHandler mHandler; |
| /** Handler used for incoming {@link NetworkStateTracker} events. */ |
| final private NetworkStateTrackerHandler mTrackerHandler; |
| /** Handler used for processing {@link android.net.ConnectivityDiagnosticsManager} events */ |
| @VisibleForTesting |
| final ConnectivityDiagnosticsHandler mConnectivityDiagnosticsHandler; |
| |
| private final DnsManager mDnsManager; |
| private final NetworkRanker mNetworkRanker; |
| |
| private boolean mSystemReady; |
| private Intent mInitialBroadcast; |
| |
| private PowerManager.WakeLock mNetTransitionWakeLock; |
| private int mNetTransitionWakeLockTimeout; |
| private final PowerManager.WakeLock mPendingIntentWakeLock; |
| |
| // A helper object to track the current default HTTP proxy. ConnectivityService needs to tell |
| // the world when it changes. |
| @VisibleForTesting |
| protected final ProxyTracker mProxyTracker; |
| |
| final private SettingsObserver mSettingsObserver; |
| |
| private UserManager mUserManager; |
| |
| private NetworkConfig[] mNetConfigs; |
| private int mNetworksDefined; |
| |
| // the set of network types that can only be enabled by system/sig apps |
| private List mProtectedNetworks; |
| |
| private Set<String> mWolSupportedInterfaces; |
| |
| private final TelephonyManager mTelephonyManager; |
| private final AppOpsManager mAppOpsManager; |
| |
| private final LocationPermissionChecker mLocationPermissionChecker; |
| |
| private KeepaliveTracker mKeepaliveTracker; |
| private NetworkNotificationManager mNotifier; |
| private LingerMonitor mLingerMonitor; |
| |
| // sequence number of NetworkRequests |
| private int mNextNetworkRequestId = 1; |
| |
| // Sequence number for NetworkProvider IDs. |
| private final AtomicInteger mNextNetworkProviderId = new AtomicInteger( |
| NetworkProvider.FIRST_PROVIDER_ID); |
| |
| // NetworkRequest activity String log entries. |
| private static final int MAX_NETWORK_REQUEST_LOGS = 20; |
| private final LocalLog mNetworkRequestInfoLogs = new LocalLog(MAX_NETWORK_REQUEST_LOGS); |
| |
| // NetworkInfo blocked and unblocked String log entries |
| private static final int MAX_NETWORK_INFO_LOGS = 40; |
| private final LocalLog mNetworkInfoBlockingLogs = new LocalLog(MAX_NETWORK_INFO_LOGS); |
| |
| private static final int MAX_WAKELOCK_LOGS = 20; |
| private final LocalLog mWakelockLogs = new LocalLog(MAX_WAKELOCK_LOGS); |
| private int mTotalWakelockAcquisitions = 0; |
| private int mTotalWakelockReleases = 0; |
| private long mTotalWakelockDurationMs = 0; |
| private long mMaxWakelockDurationMs = 0; |
| private long mLastWakeLockAcquireTimestamp = 0; |
| |
| private final IpConnectivityLog mMetricsLog; |
| |
| @GuardedBy("mBandwidthRequests") |
| private final SparseArray<Integer> mBandwidthRequests = new SparseArray(10); |
| |
| @VisibleForTesting |
| final MultinetworkPolicyTracker mMultinetworkPolicyTracker; |
| |
| @VisibleForTesting |
| final MultipathPolicyTracker mMultipathPolicyTracker; |
| |
| @VisibleForTesting |
| final Map<IConnectivityDiagnosticsCallback, ConnectivityDiagnosticsCallbackInfo> |
| mConnectivityDiagnosticsCallbacks = new HashMap<>(); |
| |
| /** |
| * 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. |
| */ |
| @VisibleForTesting |
| static class LegacyTypeTracker { |
| |
| private static final boolean DBG = true; |
| private static final boolean VDBG = false; |
| |
| /** |
| * 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. |
| * |
| * Threading model: |
| * - addSupportedType() is only called in the constructor |
| * - add(), update(), remove() are only called from the ConnectivityService handler thread. |
| * They are therefore not thread-safe with respect to each other. |
| * - getNetworkForType() can be called at any time on binder threads. It is synchronized |
| * on mTypeLists to be thread-safe with respect to a concurrent remove call. |
| * - dump is thread-safe with respect to concurrent add and remove calls. |
| */ |
| private final ArrayList<NetworkAgentInfo> mTypeLists[]; |
| @NonNull |
| private final ConnectivityService mService; |
| |
| LegacyTypeTracker(@NonNull ConnectivityService service) { |
| mService = service; |
| mTypeLists = 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) { |
| synchronized (mTypeLists) { |
| if (isTypeSupported(type) && !mTypeLists[type].isEmpty()) { |
| return mTypeLists[type].get(0); |
| } |
| } |
| return null; |
| } |
| |
| private void maybeLogBroadcast(NetworkAgentInfo nai, DetailedState state, int type, |
| boolean isDefaultNetwork) { |
| if (DBG) { |
| log("Sending " + state |
| + " broadcast for type " + type + " " + nai.toShortString() |
| + " isDefaultNetwork=" + isDefaultNetwork); |
| } |
| } |
| |
| /** Adds the given network to the specified legacy type list. */ |
| public void add(int type, NetworkAgentInfo nai) { |
| if (!isTypeSupported(type)) { |
| return; // Invalid network type. |
| } |
| if (VDBG) log("Adding agent " + nai + " for legacy network type " + type); |
| |
| ArrayList<NetworkAgentInfo> list = mTypeLists[type]; |
| if (list.contains(nai)) { |
| return; |
| } |
| synchronized (mTypeLists) { |
| list.add(nai); |
| } |
| |
| // Send a broadcast if this is the first network of its type or if it's the default. |
| final boolean isDefaultNetwork = mService.isDefaultNetwork(nai); |
| if ((list.size() == 1) || isDefaultNetwork) { |
| maybeLogBroadcast(nai, DetailedState.CONNECTED, type, isDefaultNetwork); |
| mService.sendLegacyNetworkBroadcast(nai, DetailedState.CONNECTED, type); |
| } |
| } |
| |
| /** Removes the given network from the specified legacy type list. */ |
| public void remove(int type, NetworkAgentInfo nai, boolean wasDefault) { |
| ArrayList<NetworkAgentInfo> list = mTypeLists[type]; |
| if (list == null || list.isEmpty()) { |
| return; |
| } |
| final boolean wasFirstNetwork = list.get(0).equals(nai); |
| |
| synchronized (mTypeLists) { |
| if (!list.remove(nai)) { |
| return; |
| } |
| } |
| |
| if (wasFirstNetwork || wasDefault) { |
| maybeLogBroadcast(nai, DetailedState.DISCONNECTED, type, wasDefault); |
| mService.sendLegacyNetworkBroadcast(nai, DetailedState.DISCONNECTED, type); |
| } |
| |
| if (!list.isEmpty() && wasFirstNetwork) { |
| if (DBG) log("Other network available for type " + type + |
| ", sending connected broadcast"); |
| final NetworkAgentInfo replacement = list.get(0); |
| maybeLogBroadcast(replacement, DetailedState.CONNECTED, type, |
| mService.isDefaultNetwork(replacement)); |
| mService.sendLegacyNetworkBroadcast(replacement, DetailedState.CONNECTED, type); |
| } |
| } |
| |
| /** Removes the given network from all legacy type lists. */ |
| public void remove(NetworkAgentInfo nai, boolean wasDefault) { |
| if (VDBG) log("Removing agent " + nai + " wasDefault=" + wasDefault); |
| for (int type = 0; type < mTypeLists.length; type++) { |
| remove(type, nai, wasDefault); |
| } |
| } |
| |
| // send out another legacy broadcast - currently only used for suspend/unsuspend |
| // toggle |
| public void update(NetworkAgentInfo nai) { |
| final boolean isDefault = mService.isDefaultNetwork(nai); |
| final DetailedState state = nai.networkInfo.getDetailedState(); |
| for (int type = 0; type < mTypeLists.length; type++) { |
| final ArrayList<NetworkAgentInfo> list = mTypeLists[type]; |
| final boolean contains = (list != null && list.contains(nai)); |
| final boolean isFirst = contains && (nai == list.get(0)); |
| if (isFirst || contains && isDefault) { |
| maybeLogBroadcast(nai, state, type, isDefault); |
| mService.sendLegacyNetworkBroadcast(nai, state, type); |
| } |
| } |
| } |
| |
| public void dump(IndentingPrintWriter pw) { |
| pw.println("mLegacyTypeTracker:"); |
| pw.increaseIndent(); |
| pw.print("Supported types:"); |
| for (int type = 0; type < mTypeLists.length; type++) { |
| if (mTypeLists[type] != null) pw.print(" " + type); |
| } |
| pw.println(); |
| pw.println("Current state:"); |
| pw.increaseIndent(); |
| synchronized (mTypeLists) { |
| for (int type = 0; type < mTypeLists.length; type++) { |
| if (mTypeLists[type] == null || mTypeLists[type].isEmpty()) continue; |
| for (NetworkAgentInfo nai : mTypeLists[type]) { |
| pw.println(type + " " + nai.toShortString()); |
| } |
| } |
| } |
| pw.decreaseIndent(); |
| pw.decreaseIndent(); |
| pw.println(); |
| } |
| } |
| private final LegacyTypeTracker mLegacyTypeTracker = new LegacyTypeTracker(this); |
| |
| /** |
| * Helper class which parses out priority arguments and dumps sections according to their |
| * priority. If priority arguments are omitted, function calls the legacy dump command. |
| */ |
| private final PriorityDump.PriorityDumper mPriorityDumper = new PriorityDump.PriorityDumper() { |
| @Override |
| public void dumpHigh(FileDescriptor fd, PrintWriter pw, String[] args, boolean asProto) { |
| doDump(fd, pw, new String[] {DIAG_ARG}, asProto); |
| doDump(fd, pw, new String[] {SHORT_ARG}, asProto); |
| } |
| |
| @Override |
| public void dumpNormal(FileDescriptor fd, PrintWriter pw, String[] args, boolean asProto) { |
| doDump(fd, pw, args, asProto); |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args, boolean asProto) { |
| doDump(fd, pw, args, asProto); |
| } |
| }; |
| |
| /** |
| * Dependencies of ConnectivityService, for injection in tests. |
| */ |
| @VisibleForTesting |
| public static class Dependencies { |
| /** |
| * Get system properties to use in ConnectivityService. |
| */ |
| public MockableSystemProperties getSystemProperties() { |
| return new MockableSystemProperties(); |
| } |
| |
| /** |
| * Create a HandlerThread to use in ConnectivityService. |
| */ |
| public HandlerThread makeHandlerThread() { |
| return new HandlerThread("ConnectivityServiceThread"); |
| } |
| |
| /** |
| * Get a reference to the NetworkStackClient. |
| */ |
| public NetworkStackClient getNetworkStack() { |
| return NetworkStackClient.getInstance(); |
| } |
| |
| /** |
| * @see ProxyTracker |
| */ |
| public ProxyTracker makeProxyTracker(@NonNull Context context, |
| @NonNull Handler connServiceHandler) { |
| return new ProxyTracker(context, connServiceHandler, EVENT_PROXY_HAS_CHANGED); |
| } |
| |
| /** |
| * @see NetIdManager |
| */ |
| public NetIdManager makeNetIdManager() { |
| return new NetIdManager(); |
| } |
| |
| /** |
| * @see NetworkUtils#queryUserAccess(int, int) |
| */ |
| public boolean queryUserAccess(int uid, int netId) { |
| return NetworkUtils.queryUserAccess(uid, netId); |
| } |
| |
| /** |
| * @see MultinetworkPolicyTracker |
| */ |
| public MultinetworkPolicyTracker makeMultinetworkPolicyTracker( |
| @NonNull Context c, @NonNull Handler h, @NonNull Runnable r) { |
| return new MultinetworkPolicyTracker(c, h, r); |
| } |
| |
| /** |
| * @see ServiceManager#checkService(String) |
| */ |
| public boolean hasService(@NonNull String name) { |
| return ServiceManager.checkService(name) != null; |
| } |
| |
| /** |
| * @see IpConnectivityMetrics.Logger |
| */ |
| public IpConnectivityMetrics.Logger getMetricsLogger() { |
| return Objects.requireNonNull(LocalServices.getService(IpConnectivityMetrics.Logger.class), |
| "no IpConnectivityMetrics service"); |
| } |
| |
| /** |
| * @see IpConnectivityMetrics |
| */ |
| public IIpConnectivityMetrics getIpConnectivityMetrics() { |
| return IIpConnectivityMetrics.Stub.asInterface( |
| ServiceManager.getService(IpConnectivityLog.SERVICE_NAME)); |
| } |
| |
| public IBatteryStats getBatteryStatsService() { |
| return BatteryStatsService.getService(); |
| } |
| } |
| |
| public ConnectivityService(Context context, INetworkManagementService netManager, |
| INetworkStatsService statsService, INetworkPolicyManager policyManager) { |
| this(context, netManager, statsService, policyManager, getDnsResolver(), |
| new IpConnectivityLog(), NetdService.getInstance(), new Dependencies()); |
| } |
| |
| @VisibleForTesting |
| protected ConnectivityService(Context context, INetworkManagementService netManager, |
| INetworkStatsService statsService, INetworkPolicyManager policyManager, |
| IDnsResolver dnsresolver, IpConnectivityLog logger, INetd netd, Dependencies deps) { |
| if (DBG) log("ConnectivityService starting up"); |
| |
| mDeps = Objects.requireNonNull(deps, "missing Dependencies"); |
| mSystemProperties = mDeps.getSystemProperties(); |
| mNetIdManager = mDeps.makeNetIdManager(); |
| mContext = Objects.requireNonNull(context, "missing Context"); |
| |
| mMetricsLog = logger; |
| mDefaultRequest = createDefaultInternetRequestForTransport(-1, NetworkRequest.Type.REQUEST); |
| mNetworkRanker = new NetworkRanker(); |
| NetworkRequestInfo defaultNRI = new NetworkRequestInfo(null, mDefaultRequest, new Binder()); |
| mNetworkRequests.put(mDefaultRequest, defaultNRI); |
| mNetworkRequestInfoLogs.log("REGISTER " + defaultNRI); |
| |
| mDefaultMobileDataRequest = createDefaultInternetRequestForTransport( |
| NetworkCapabilities.TRANSPORT_CELLULAR, NetworkRequest.Type.BACKGROUND_REQUEST); |
| |
| // The default WiFi request is a background request so that apps using WiFi are |
| // migrated to a better network (typically ethernet) when one comes up, instead |
| // of staying on WiFi forever. |
| mDefaultWifiRequest = createDefaultInternetRequestForTransport( |
| NetworkCapabilities.TRANSPORT_WIFI, NetworkRequest.Type.BACKGROUND_REQUEST); |
| |
| mHandlerThread = mDeps.makeHandlerThread(); |
| mHandlerThread.start(); |
| mHandler = new InternalHandler(mHandlerThread.getLooper()); |
| mTrackerHandler = new NetworkStateTrackerHandler(mHandlerThread.getLooper()); |
| mConnectivityDiagnosticsHandler = |
| new ConnectivityDiagnosticsHandler(mHandlerThread.getLooper()); |
| |
| mReleasePendingIntentDelayMs = Settings.Secure.getInt(context.getContentResolver(), |
| Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS, 5_000); |
| |
| mLingerDelayMs = mSystemProperties.getInt(LINGER_DELAY_PROPERTY, DEFAULT_LINGER_DELAY_MS); |
| |
| mNMS = Objects.requireNonNull(netManager, "missing INetworkManagementService"); |
| mStatsService = Objects.requireNonNull(statsService, "missing INetworkStatsService"); |
| mPolicyManager = Objects.requireNonNull(policyManager, "missing INetworkPolicyManager"); |
| mPolicyManagerInternal = Objects.requireNonNull( |
| LocalServices.getService(NetworkPolicyManagerInternal.class), |
| "missing NetworkPolicyManagerInternal"); |
| mDnsResolver = Objects.requireNonNull(dnsresolver, "missing IDnsResolver"); |
| mProxyTracker = mDeps.makeProxyTracker(mContext, mHandler); |
| |
| mNetd = netd; |
| mKeyStore = KeyStore.getInstance(); |
| mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); |
| mAppOpsManager = (AppOpsManager) mContext.getSystemService(Context.APP_OPS_SERVICE); |
| mLocationPermissionChecker = new LocationPermissionChecker(mContext); |
| |
| // To ensure uid rules are synchronized with Network Policy, register for |
| // NetworkPolicyManagerService events must happen prior to NetworkPolicyManagerService |
| // reading existing policy from disk. |
| try { |
| mPolicyManager.registerListener(mPolicyListener); |
| } catch (RemoteException e) { |
| // ouch, no rules updates means some processes may never get network |
| loge("unable to register INetworkPolicyListener" + e); |
| } |
| |
| final PowerManager powerManager = (PowerManager) context.getSystemService( |
| Context.POWER_SERVICE); |
| mNetTransitionWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); |
| mNetTransitionWakeLockTimeout = mContext.getResources().getInteger( |
| com.android.internal.R.integer.config_networkTransitionTimeout); |
| mPendingIntentWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG); |
| |
| 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 = mSystemProperties.getBoolean("ro.radio.noril", false); |
| log("wifiOnly=" + wifiOnly); |
| String[] naStrings = context.getResources().getStringArray( |
| com.android.internal.R.array.networkAttributes); |
| for (String naString : naStrings) { |
| try { |
| NetworkConfig n = new NetworkConfig(naString); |
| if (VDBG) log("naString=" + naString + " config=" + n); |
| if (n.type > ConnectivityManager.MAX_NETWORK_TYPE) { |
| loge("Error in networkAttributes - ignoring attempt to define type " + |
| n.type); |
| continue; |
| } |
| if (wifiOnly && ConnectivityManager.isNetworkTypeMobile(n.type)) { |
| log("networkAttributes - ignoring mobile as this dev is wifiOnly " + |
| n.type); |
| continue; |
| } |
| if (mNetConfigs[n.type] != null) { |
| loge("Error in networkAttributes - ignoring attempt to redefine type " + |
| n.type); |
| continue; |
| } |
| mLegacyTypeTracker.addSupportedType(n.type); |
| |
| mNetConfigs[n.type] = n; |
| mNetworksDefined++; |
| } catch(Exception e) { |
| // ignore it - leave the entry null |
| } |
| } |
| |
| // Forcibly add TYPE_VPN as a supported type, if it has not already been added via config. |
| if (mNetConfigs[TYPE_VPN] == null) { |
| // mNetConfigs is used only for "restore time", which isn't applicable to VPNs, so we |
| // don't need to add TYPE_VPN to mNetConfigs. |
| mLegacyTypeTracker.addSupportedType(TYPE_VPN); |
| mNetworksDefined++; // used only in the log() statement below. |
| } |
| |
| // Do the same for Ethernet, since it's often not specified in the configs, although many |
| // devices can use it via USB host adapters. |
| if (mNetConfigs[TYPE_ETHERNET] == null && mDeps.hasService(Context.ETHERNET_SERVICE)) { |
| mLegacyTypeTracker.addSupportedType(TYPE_ETHERNET); |
| mNetworksDefined++; |
| } |
| |
| if (VDBG) log("mNetworksDefined=" + mNetworksDefined); |
| |
| mProtectedNetworks = new ArrayList<Integer>(); |
| int[] protectedNetworks = context.getResources().getIntArray( |
| com.android.internal.R.array.config_protectedNetworks); |
| for (int p : protectedNetworks) { |
| if ((mNetConfigs[p] != null) && (mProtectedNetworks.contains(p) == false)) { |
| mProtectedNetworks.add(p); |
| } else { |
| if (DBG) loge("Ignoring protectedNetwork " + p); |
| } |
| } |
| |
| mWolSupportedInterfaces = new ArraySet( |
| mContext.getResources().getStringArray( |
| com.android.internal.R.array.config_wakeonlan_supported_interfaces)); |
| |
| mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE); |
| |
| mPermissionMonitor = new PermissionMonitor(mContext, mNetd); |
| |
| // Set up the listener for user state for creating user VPNs. |
| // Should run on mHandler to avoid any races. |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_USER_STARTED); |
| intentFilter.addAction(Intent.ACTION_USER_STOPPED); |
| intentFilter.addAction(Intent.ACTION_USER_ADDED); |
| intentFilter.addAction(Intent.ACTION_USER_REMOVED); |
| intentFilter.addAction(Intent.ACTION_USER_UNLOCKED); |
| mContext.registerReceiverAsUser( |
| mIntentReceiver, |
| UserHandle.ALL, |
| intentFilter, |
| null /* broadcastPermission */, |
| mHandler); |
| mContext.registerReceiverAsUser(mUserPresentReceiver, UserHandle.SYSTEM, |
| new IntentFilter(Intent.ACTION_USER_PRESENT), null, null); |
| |
| // Listen to package add and removal events for all users. |
| intentFilter = new IntentFilter(); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_REPLACED); |
| intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED); |
| intentFilter.addDataScheme("package"); |
| mContext.registerReceiverAsUser( |
| mIntentReceiver, |
| UserHandle.ALL, |
| intentFilter, |
| null /* broadcastPermission */, |
| mHandler); |
| |
| try { |
| mNMS.registerObserver(mDataActivityObserver); |
| } catch (RemoteException e) { |
| loge("Error registering observer :" + e); |
| } |
| |
| mSettingsObserver = new SettingsObserver(mContext, mHandler); |
| registerSettingsCallbacks(); |
| |
| final DataConnectionStats dataConnectionStats = new DataConnectionStats(mContext, mHandler); |
| dataConnectionStats.startMonitoring(); |
| |
| mKeepaliveTracker = new KeepaliveTracker(mContext, mHandler); |
| mNotifier = new NetworkNotificationManager(mContext, mTelephonyManager, |
| mContext.getSystemService(NotificationManager.class)); |
| |
| final int dailyLimit = Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.NETWORK_SWITCH_NOTIFICATION_DAILY_LIMIT, |
| LingerMonitor.DEFAULT_NOTIFICATION_DAILY_LIMIT); |
| final long rateLimit = Settings.Global.getLong(mContext.getContentResolver(), |
| Settings.Global.NETWORK_SWITCH_NOTIFICATION_RATE_LIMIT_MILLIS, |
| LingerMonitor.DEFAULT_NOTIFICATION_RATE_LIMIT_MILLIS); |
| mLingerMonitor = new LingerMonitor(mContext, mNotifier, dailyLimit, rateLimit); |
| |
| mMultinetworkPolicyTracker = mDeps.makeMultinetworkPolicyTracker( |
| mContext, mHandler, () -> rematchForAvoidBadWifiUpdate()); |
| mMultinetworkPolicyTracker.start(); |
| |
| mMultipathPolicyTracker = new MultipathPolicyTracker(mContext, mHandler); |
| |
| mDnsManager = new DnsManager(mContext, mDnsResolver, mSystemProperties); |
| registerPrivateDnsSettingsCallbacks(); |
| } |
| |
| private static NetworkCapabilities createDefaultNetworkCapabilitiesForUid(int uid) { |
| final NetworkCapabilities netCap = new NetworkCapabilities(); |
| netCap.addCapability(NET_CAPABILITY_INTERNET); |
| netCap.removeCapability(NET_CAPABILITY_NOT_VPN); |
| netCap.setSingleUid(uid); |
| return netCap; |
| } |
| |
| private NetworkRequest createDefaultInternetRequestForTransport( |
| int transportType, NetworkRequest.Type type) { |
| final NetworkCapabilities netCap = new NetworkCapabilities(); |
| netCap.addCapability(NET_CAPABILITY_INTERNET); |
| netCap.setRequestorUidAndPackageName(Process.myUid(), mContext.getPackageName()); |
| if (transportType > -1) { |
| netCap.addTransportType(transportType); |
| } |
| return new NetworkRequest(netCap, TYPE_NONE, nextNetworkRequestId(), type); |
| } |
| |
| // Used only for testing. |
| // TODO: Delete this and either: |
| // 1. Give FakeSettingsProvider the ability to send settings change notifications (requires |
| // changing ContentResolver to make registerContentObserver non-final). |
| // 2. Give FakeSettingsProvider an alternative notification mechanism and have the test use it |
| // by subclassing SettingsObserver. |
| @VisibleForTesting |
| void updateAlwaysOnNetworks() { |
| mHandler.sendEmptyMessage(EVENT_CONFIGURE_ALWAYS_ON_NETWORKS); |
| } |
| |
| // See FakeSettingsProvider comment above. |
| @VisibleForTesting |
| void updatePrivateDnsSettings() { |
| mHandler.sendEmptyMessage(EVENT_PRIVATE_DNS_SETTINGS_CHANGED); |
| } |
| |
| private void handleAlwaysOnNetworkRequest( |
| NetworkRequest networkRequest, String settingName, boolean defaultValue) { |
| final boolean enable = toBool(Settings.Global.getInt( |
| mContext.getContentResolver(), settingName, encodeBool(defaultValue))); |
| final boolean isEnabled = (mNetworkRequests.get(networkRequest) != null); |
| if (enable == isEnabled) { |
| return; // Nothing to do. |
| } |
| |
| if (enable) { |
| handleRegisterNetworkRequest(new NetworkRequestInfo( |
| null, networkRequest, new Binder())); |
| } else { |
| handleReleaseNetworkRequest(networkRequest, Process.SYSTEM_UID, |
| /* callOnUnavailable */ false); |
| } |
| } |
| |
| private void handleConfigureAlwaysOnNetworks() { |
| handleAlwaysOnNetworkRequest( |
| mDefaultMobileDataRequest,Settings.Global.MOBILE_DATA_ALWAYS_ON, true); |
| handleAlwaysOnNetworkRequest(mDefaultWifiRequest, Settings.Global.WIFI_ALWAYS_REQUESTED, |
| false); |
| } |
| |
| private void registerSettingsCallbacks() { |
| // Watch for global HTTP proxy changes. |
| mSettingsObserver.observe( |
| Settings.Global.getUriFor(Settings.Global.HTTP_PROXY), |
| EVENT_APPLY_GLOBAL_HTTP_PROXY); |
| |
| // Watch for whether or not to keep mobile data always on. |
| mSettingsObserver.observe( |
| Settings.Global.getUriFor(Settings.Global.MOBILE_DATA_ALWAYS_ON), |
| EVENT_CONFIGURE_ALWAYS_ON_NETWORKS); |
| |
| // Watch for whether or not to keep wifi always on. |
| mSettingsObserver.observe( |
| Settings.Global.getUriFor(Settings.Global.WIFI_ALWAYS_REQUESTED), |
| EVENT_CONFIGURE_ALWAYS_ON_NETWORKS); |
| } |
| |
| private void registerPrivateDnsSettingsCallbacks() { |
| for (Uri uri : DnsManager.getPrivateDnsSettingsUris()) { |
| mSettingsObserver.observe(uri, EVENT_PRIVATE_DNS_SETTINGS_CHANGED); |
| } |
| } |
| |
| private synchronized int nextNetworkRequestId() { |
| return mNextNetworkRequestId++; |
| } |
| |
| private NetworkState getFilteredNetworkState(int networkType, int uid) { |
| if (mLegacyTypeTracker.isTypeSupported(networkType)) { |
| final NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); |
| final NetworkState state; |
| if (nai != null) { |
| state = nai.getNetworkState(); |
| state.networkInfo.setType(networkType); |
| } else { |
| final NetworkInfo info = new NetworkInfo(networkType, 0, |
| getNetworkTypeName(networkType), ""); |
| info.setDetailedState(NetworkInfo.DetailedState.DISCONNECTED, null, null); |
| info.setIsAvailable(true); |
| final NetworkCapabilities capabilities = new NetworkCapabilities(); |
| capabilities.setCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING, |
| !info.isRoaming()); |
| state = new NetworkState(info, new LinkProperties(), capabilities, |
| null, null, null); |
| } |
| filterNetworkStateForUid(state, uid, false); |
| return state; |
| } else { |
| return NetworkState.EMPTY; |
| } |
| } |
| |
| @VisibleForTesting |
| protected NetworkAgentInfo getNetworkAgentInfoForNetwork(Network network) { |
| if (network == null) { |
| return null; |
| } |
| return getNetworkAgentInfoForNetId(network.netId); |
| } |
| |
| private NetworkAgentInfo getNetworkAgentInfoForNetId(int netId) { |
| synchronized (mNetworkForNetId) { |
| return mNetworkForNetId.get(netId); |
| } |
| } |
| |
| private Network[] getVpnUnderlyingNetworks(int uid) { |
| synchronized (mVpns) { |
| if (!mLockdownEnabled) { |
| int user = UserHandle.getUserId(uid); |
| Vpn vpn = mVpns.get(user); |
| if (vpn != null && vpn.appliesToUid(uid)) { |
| return vpn.getUnderlyingNetworks(); |
| } |
| } |
| } |
| return null; |
| } |
| |
| private NetworkState getUnfilteredActiveNetworkState(int uid) { |
| NetworkAgentInfo nai = getDefaultNetwork(); |
| |
| final Network[] networks = getVpnUnderlyingNetworks(uid); |
| if (networks != null) { |
| // getUnderlyingNetworks() returns: |
| // null => there was no VPN, or the VPN didn't specify anything, so we use the default. |
| // empty array => the VPN explicitly said "no default network". |
| // non-empty array => the VPN specified one or more default networks; we use the |
| // first one. |
| if (networks.length > 0) { |
| nai = getNetworkAgentInfoForNetwork(networks[0]); |
| } else { |
| nai = null; |
| } |
| } |
| |
| if (nai != null) { |
| return nai.getNetworkState(); |
| } else { |
| return NetworkState.EMPTY; |
| } |
| } |
| |
| /** |
| * Check if UID should be blocked from using the network with the given LinkProperties. |
| */ |
| private boolean isNetworkWithLinkPropertiesBlocked(LinkProperties lp, int uid, |
| boolean ignoreBlocked) { |
| // Networks aren't blocked when ignoring blocked status |
| if (ignoreBlocked) { |
| return false; |
| } |
| synchronized (mVpns) { |
| final Vpn vpn = mVpns.get(UserHandle.getUserId(uid)); |
| if (vpn != null && vpn.getLockdown() && vpn.isBlockingUid(uid)) { |
| return true; |
| } |
| } |
| final String iface = (lp == null ? "" : lp.getInterfaceName()); |
| return mPolicyManagerInternal.isUidNetworkingBlocked(uid, iface); |
| } |
| |
| private void maybeLogBlockedNetworkInfo(NetworkInfo ni, int uid) { |
| if (ni == null || !LOGD_BLOCKED_NETWORKINFO) { |
| return; |
| } |
| final boolean blocked; |
| synchronized (mBlockedAppUids) { |
| if (ni.getDetailedState() == DetailedState.BLOCKED && mBlockedAppUids.add(uid)) { |
| blocked = true; |
| } else if (ni.isConnected() && mBlockedAppUids.remove(uid)) { |
| blocked = false; |
| } else { |
| return; |
| } |
| } |
| String action = blocked ? "BLOCKED" : "UNBLOCKED"; |
| log(String.format("Returning %s NetworkInfo to uid=%d", action, uid)); |
| mNetworkInfoBlockingLogs.log(action + " " + uid); |
| } |
| |
| private void maybeLogBlockedStatusChanged(NetworkRequestInfo nri, Network net, |
| boolean blocked) { |
| if (nri == null || net == null || !LOGD_BLOCKED_NETWORKINFO) { |
| return; |
| } |
| String action = blocked ? "BLOCKED" : "UNBLOCKED"; |
| log(String.format("Blocked status changed to %s for %d(%d) on netId %d", blocked, |
| nri.mUid, nri.request.requestId, net.netId)); |
| mNetworkInfoBlockingLogs.log(action + " " + nri.mUid); |
| } |
| |
| /** |
| * Apply any relevant filters to {@link NetworkState} for the given UID. For |
| * example, this may mark the network as {@link DetailedState#BLOCKED} based |
| * on {@link #isNetworkWithLinkPropertiesBlocked}. |
| */ |
| private void filterNetworkStateForUid(NetworkState state, int uid, boolean ignoreBlocked) { |
| if (state == null || state.networkInfo == null || state.linkProperties == null) return; |
| |
| if (isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, ignoreBlocked)) { |
| state.networkInfo.setDetailedState(DetailedState.BLOCKED, null, null); |
| } |
| synchronized (mVpns) { |
| if (mLockdownTracker != null) { |
| mLockdownTracker.augmentNetworkInfo(state.networkInfo); |
| } |
| } |
| } |
| |
| /** |
| * 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(); |
| final NetworkState state = getUnfilteredActiveNetworkState(uid); |
| filterNetworkStateForUid(state, uid, false); |
| maybeLogBlockedNetworkInfo(state.networkInfo, uid); |
| return state.networkInfo; |
| } |
| |
| @Override |
| public Network getActiveNetwork() { |
| enforceAccessPermission(); |
| return getActiveNetworkForUidInternal(Binder.getCallingUid(), false); |
| } |
| |
| @Override |
| public Network getActiveNetworkForUid(int uid, boolean ignoreBlocked) { |
| NetworkStack.checkNetworkStackPermission(mContext); |
| return getActiveNetworkForUidInternal(uid, ignoreBlocked); |
| } |
| |
| private Network getActiveNetworkForUidInternal(final int uid, boolean ignoreBlocked) { |
| final int user = UserHandle.getUserId(uid); |
| int vpnNetId = NETID_UNSET; |
| synchronized (mVpns) { |
| final Vpn vpn = mVpns.get(user); |
| // TODO : now that capabilities contain the UID, the appliesToUid test should |
| // be removed as the satisfying test below should be enough. |
| if (vpn != null && vpn.appliesToUid(uid)) vpnNetId = vpn.getNetId(); |
| } |
| NetworkAgentInfo nai; |
| if (vpnNetId != NETID_UNSET) { |
| nai = getNetworkAgentInfoForNetId(vpnNetId); |
| if (nai != null) { |
| final NetworkCapabilities requiredCaps = |
| createDefaultNetworkCapabilitiesForUid(uid); |
| if (requiredCaps.satisfiedByNetworkCapabilities(nai.networkCapabilities)) { |
| return nai.network; |
| } |
| } |
| } |
| nai = getDefaultNetwork(); |
| if (nai != null |
| && isNetworkWithLinkPropertiesBlocked(nai.linkProperties, uid, ignoreBlocked)) { |
| nai = null; |
| } |
| return nai != null ? nai.network : null; |
| } |
| |
| // Public because it's used by mLockdownTracker. |
| public NetworkInfo getActiveNetworkInfoUnfiltered() { |
| enforceAccessPermission(); |
| final int uid = Binder.getCallingUid(); |
| NetworkState state = getUnfilteredActiveNetworkState(uid); |
| return state.networkInfo; |
| } |
| |
| @Override |
| public NetworkInfo getActiveNetworkInfoForUid(int uid, boolean ignoreBlocked) { |
| NetworkStack.checkNetworkStackPermission(mContext); |
| final NetworkState state = getUnfilteredActiveNetworkState(uid); |
| filterNetworkStateForUid(state, uid, ignoreBlocked); |
| return state.networkInfo; |
| } |
| |
| @Override |
| public NetworkInfo getNetworkInfo(int networkType) { |
| enforceAccessPermission(); |
| final int uid = Binder.getCallingUid(); |
| if (getVpnUnderlyingNetworks(uid) != null) { |
| // A VPN is active, so we may need to return one of its underlying networks. This |
| // information is not available in LegacyTypeTracker, so we have to get it from |
| // getUnfilteredActiveNetworkState. |
| final NetworkState state = getUnfilteredActiveNetworkState(uid); |
| if (state.networkInfo != null && state.networkInfo.getType() == networkType) { |
| filterNetworkStateForUid(state, uid, false); |
| return state.networkInfo; |
| } |
| } |
| final NetworkState state = getFilteredNetworkState(networkType, uid); |
| return state.networkInfo; |
| } |
| |
| @Override |
| public NetworkInfo getNetworkInfoForUid(Network network, int uid, boolean ignoreBlocked) { |
| enforceAccessPermission(); |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai != null) { |
| final NetworkState state = nai.getNetworkState(); |
| filterNetworkStateForUid(state, uid, ignoreBlocked); |
| return state.networkInfo; |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public NetworkInfo[] getAllNetworkInfo() { |
| enforceAccessPermission(); |
| final ArrayList<NetworkInfo> result = Lists.newArrayList(); |
| for (int networkType = 0; networkType <= ConnectivityManager.MAX_NETWORK_TYPE; |
| networkType++) { |
| NetworkInfo info = getNetworkInfo(networkType); |
| if (info != null) { |
| result.add(info); |
| } |
| } |
| return result.toArray(new NetworkInfo[result.size()]); |
| } |
| |
| @Override |
| public Network getNetworkForType(int networkType) { |
| enforceAccessPermission(); |
| final int uid = Binder.getCallingUid(); |
| NetworkState state = getFilteredNetworkState(networkType, uid); |
| if (!isNetworkWithLinkPropertiesBlocked(state.linkProperties, uid, false)) { |
| return state.network; |
| } |
| return null; |
| } |
| |
| @Override |
| public Network[] getAllNetworks() { |
| enforceAccessPermission(); |
| synchronized (mNetworkForNetId) { |
| final Network[] result = new Network[mNetworkForNetId.size()]; |
| for (int i = 0; i < mNetworkForNetId.size(); i++) { |
| result[i] = mNetworkForNetId.valueAt(i).network; |
| } |
| return result; |
| } |
| } |
| |
| @Override |
| public NetworkCapabilities[] getDefaultNetworkCapabilitiesForUser(int userId) { |
| // The basic principle is: if an app's traffic could possibly go over a |
| // network, without the app doing anything multinetwork-specific, |
| // (hence, by "default"), then include that network's capabilities in |
| // the array. |
| // |
| // In the normal case, app traffic only goes over the system's default |
| // network connection, so that's the only network returned. |
| // |
| // With a VPN in force, some app traffic may go into the VPN, and thus |
| // over whatever underlying networks the VPN specifies, while other app |
| // traffic may go over the system default network (e.g.: a split-tunnel |
| // VPN, or an app disallowed by the VPN), so the set of networks |
| // returned includes the VPN's underlying networks and the system |
| // default. |
| enforceAccessPermission(); |
| |
| HashMap<Network, NetworkCapabilities> result = new HashMap<>(); |
| |
| NetworkAgentInfo nai = getDefaultNetwork(); |
| NetworkCapabilities nc = getNetworkCapabilitiesInternal(nai); |
| if (nc != null) { |
| result.put(nai.network, nc); |
| } |
| |
| synchronized (mVpns) { |
| if (!mLockdownEnabled) { |
| Vpn vpn = mVpns.get(userId); |
| if (vpn != null) { |
| Network[] networks = vpn.getUnderlyingNetworks(); |
| if (networks != null) { |
| for (Network network : networks) { |
| nai = getNetworkAgentInfoForNetwork(network); |
| nc = getNetworkCapabilitiesInternal(nai); |
| if (nc != null) { |
| result.put(network, nc); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| NetworkCapabilities[] out = new NetworkCapabilities[result.size()]; |
| out = result.values().toArray(out); |
| return out; |
| } |
| |
| @Override |
| public boolean isNetworkSupported(int networkType) { |
| enforceAccessPermission(); |
| return mLegacyTypeTracker.isTypeSupported(networkType); |
| } |
| |
| /** |
| * Return LinkProperties for the active (i.e., connected) default |
| * network interface. It is assumed that at most one default network |
| * is active at a time. If more than one is active, it is indeterminate |
| * which will be returned. |
| * @return the ip properties for the active network, or {@code null} if |
| * none is active |
| */ |
| @Override |
| public LinkProperties getActiveLinkProperties() { |
| enforceAccessPermission(); |
| final int uid = Binder.getCallingUid(); |
| NetworkState state = getUnfilteredActiveNetworkState(uid); |
| if (state.linkProperties == null) return null; |
| return linkPropertiesRestrictedForCallerPermissions(state.linkProperties, |
| Binder.getCallingPid(), uid); |
| } |
| |
| @Override |
| public LinkProperties getLinkPropertiesForType(int networkType) { |
| enforceAccessPermission(); |
| NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); |
| final LinkProperties lp = getLinkProperties(nai); |
| if (lp == null) return null; |
| return linkPropertiesRestrictedForCallerPermissions( |
| lp, Binder.getCallingPid(), Binder.getCallingUid()); |
| } |
| |
| // TODO - this should be ALL networks |
| @Override |
| public LinkProperties getLinkProperties(Network network) { |
| enforceAccessPermission(); |
| final LinkProperties lp = getLinkProperties(getNetworkAgentInfoForNetwork(network)); |
| if (lp == null) return null; |
| return linkPropertiesRestrictedForCallerPermissions( |
| lp, Binder.getCallingPid(), Binder.getCallingUid()); |
| } |
| |
| @Nullable |
| private LinkProperties getLinkProperties(@Nullable NetworkAgentInfo nai) { |
| if (nai == null) { |
| return null; |
| } |
| synchronized (nai) { |
| return nai.linkProperties; |
| } |
| } |
| |
| private NetworkCapabilities getNetworkCapabilitiesInternal(NetworkAgentInfo nai) { |
| if (nai == null) return null; |
| synchronized (nai) { |
| if (nai.networkCapabilities == null) return null; |
| return networkCapabilitiesRestrictedForCallerPermissions( |
| nai.networkCapabilities, |
| Binder.getCallingPid(), Binder.getCallingUid()); |
| } |
| } |
| |
| @Override |
| public NetworkCapabilities getNetworkCapabilities(Network network) { |
| enforceAccessPermission(); |
| return getNetworkCapabilitiesInternal(getNetworkAgentInfoForNetwork(network)); |
| } |
| |
| @VisibleForTesting |
| NetworkCapabilities networkCapabilitiesRestrictedForCallerPermissions( |
| NetworkCapabilities nc, int callerPid, int callerUid) { |
| final NetworkCapabilities newNc = new NetworkCapabilities(nc); |
| if (!checkSettingsPermission(callerPid, callerUid)) { |
| newNc.setUids(null); |
| newNc.setSSID(null); |
| } |
| if (newNc.getNetworkSpecifier() != null) { |
| newNc.setNetworkSpecifier(newNc.getNetworkSpecifier().redact()); |
| } |
| newNc.setAdministratorUids(Collections.EMPTY_LIST); |
| |
| maybeSanitizeLocationInfoForCaller(newNc, callerUid); |
| |
| return newNc; |
| } |
| |
| private void maybeSanitizeLocationInfoForCaller( |
| NetworkCapabilities nc, int callerUid) { |
| // TODO(b/142072839): Conditionally reset the owner UID if the following |
| // conditions are not met: |
| // 1. The destination app is the network owner |
| // 2. The destination app has the ACCESS_COARSE_LOCATION permission granted |
| // if target SDK<29 or otherwise has the ACCESS_FINE_LOCATION permission granted |
| // 3. The user's location toggle is on |
| nc.setOwnerUid(INVALID_UID); |
| } |
| |
| private LinkProperties linkPropertiesRestrictedForCallerPermissions( |
| LinkProperties lp, int callerPid, int callerUid) { |
| if (lp == null) return new LinkProperties(); |
| |
| // Only do a permission check if sanitization is needed, to avoid unnecessary binder calls. |
| final boolean needsSanitization = |
| (lp.getCaptivePortalApiUrl() != null || lp.getCaptivePortalData() != null); |
| if (!needsSanitization) { |
| return new LinkProperties(lp); |
| } |
| |
| if (checkSettingsPermission(callerPid, callerUid)) { |
| return lp.makeSensitiveFieldsParcelingCopy(); |
| } |
| |
| final LinkProperties newLp = new LinkProperties(lp); |
| // Sensitive fields would not be parceled anyway, but sanitize for consistency before the |
| // object gets parceled. |
| newLp.setCaptivePortalApiUrl(null); |
| newLp.setCaptivePortalData(null); |
| return newLp; |
| } |
| |
| private void restrictRequestUidsForCallerAndSetRequestorInfo(NetworkCapabilities nc, |
| int callerUid, String callerPackageName) { |
| if (!checkSettingsPermission()) { |
| nc.setSingleUid(callerUid); |
| } |
| nc.setRequestorUidAndPackageName(callerUid, callerPackageName); |
| nc.setAdministratorUids(Collections.EMPTY_LIST); |
| |
| // Clear owner UID; this can never come from an app. |
| nc.setOwnerUid(INVALID_UID); |
| } |
| |
| private void restrictBackgroundRequestForCaller(NetworkCapabilities nc) { |
| if (!mPermissionMonitor.hasUseBackgroundNetworksPermission(Binder.getCallingUid())) { |
| nc.addCapability(NET_CAPABILITY_FOREGROUND); |
| } |
| } |
| |
| @Override |
| public NetworkState[] getAllNetworkState() { |
| // This contains IMSI details, so make sure the caller is privileged. |
| NetworkStack.checkNetworkStackPermission(mContext); |
| |
| final ArrayList<NetworkState> result = Lists.newArrayList(); |
| for (Network network : getAllNetworks()) { |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai != null) { |
| // TODO (b/73321673) : NetworkState contains a copy of the |
| // NetworkCapabilities, which may contain UIDs of apps to which the |
| // network applies. Should the UIDs be cleared so as not to leak or |
| // interfere ? |
| result.add(nai.getNetworkState()); |
| } |
| } |
| return result.toArray(new NetworkState[result.size()]); |
| } |
| |
| @Override |
| @Deprecated |
| public NetworkQuotaInfo getActiveNetworkQuotaInfo() { |
| Log.w(TAG, "Shame on UID " + Binder.getCallingUid() |
| + " for calling the hidden API getNetworkQuotaInfo(). Shame!"); |
| return new NetworkQuotaInfo(); |
| } |
| |
| @Override |
| public boolean isActiveNetworkMetered() { |
| enforceAccessPermission(); |
| |
| final NetworkCapabilities caps = getNetworkCapabilities(getActiveNetwork()); |
| if (caps != null) { |
| return !caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); |
| } else { |
| // Always return the most conservative value |
| return true; |
| } |
| } |
| |
| private INetworkManagementEventObserver mDataActivityObserver = new BaseNetworkObserver() { |
| @Override |
| public void interfaceClassDataActivityChanged(String label, boolean active, long tsNanos) { |
| int deviceType = Integer.parseInt(label); |
| sendDataActivityBroadcast(deviceType, active, tsNanos); |
| } |
| }; |
| |
| /** |
| * Ensures that the system cannot call a particular method. |
| */ |
| private boolean disallowedBecauseSystemCaller() { |
| // TODO: start throwing a SecurityException when GnssLocationProvider stops calling |
| // requestRouteToHost. In Q, GnssLocationProvider is changed to not call requestRouteToHost |
| // for devices launched with Q and above. However, existing devices upgrading to Q and |
| // above must continued to be supported for few more releases. |
| if (isSystem(Binder.getCallingUid()) && SystemProperties.getInt( |
| "ro.product.first_api_level", 0) > Build.VERSION_CODES.P) { |
| log("This method exists only for app backwards compatibility" |
| + " and must not be called by system services."); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * 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 |
| */ |
| @Override |
| public boolean requestRouteToHostAddress(int networkType, byte[] hostAddress) { |
| if (disallowedBecauseSystemCaller()) { |
| return false; |
| } |
| enforceChangePermission(); |
| if (mProtectedNetworks.contains(networkType)) { |
| enforceConnectivityRestrictedNetworksPermission(); |
| } |
| |
| 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 legacy route " + bestRoute + |
| " for UID/PID " + uid + "/" + Binder.getCallingPid()); |
| try { |
| mNMS.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; |
| } |
| |
| @VisibleForTesting |
| protected final INetdEventCallback mNetdEventCallback = new BaseNetdEventCallback() { |
| @Override |
| public void onPrivateDnsValidationEvent(int netId, String ipAddress, |
| String hostname, boolean validated) { |
| try { |
| mHandler.sendMessage(mHandler.obtainMessage( |
| EVENT_PRIVATE_DNS_VALIDATION_UPDATE, |
| new PrivateDnsValidationUpdate(netId, |
| InetAddress.parseNumericAddress(ipAddress), |
| hostname, validated))); |
| } catch (IllegalArgumentException e) { |
| loge("Error parsing ip address in validation event"); |
| } |
| } |
| |
| @Override |
| public void onDnsEvent(int netId, int eventType, int returnCode, String hostname, |
| String[] ipAddresses, int ipAddressesCount, long timestamp, int uid) { |
| NetworkAgentInfo nai = getNetworkAgentInfoForNetId(netId); |
| // Netd event only allow registrants from system. Each NetworkMonitor thread is under |
| // the caller thread of registerNetworkAgent. Thus, it's not allowed to register netd |
| // event callback for certain nai. e.g. cellular. Register here to pass to |
| // NetworkMonitor instead. |
| // TODO: Move the Dns Event to NetworkMonitor. NetdEventListenerService only allow one |
| // callback from each caller type. Need to re-factor NetdEventListenerService to allow |
| // multiple NetworkMonitor registrants. |
| if (nai != null && nai.satisfies(mDefaultRequest)) { |
| nai.networkMonitor().notifyDnsResponse(returnCode); |
| } |
| } |
| |
| @Override |
| public void onNat64PrefixEvent(int netId, boolean added, |
| String prefixString, int prefixLength) { |
| mHandler.post(() -> handleNat64PrefixEvent(netId, added, prefixString, prefixLength)); |
| } |
| }; |
| |
| private void registerNetdEventCallback() { |
| final IIpConnectivityMetrics ipConnectivityMetrics = mDeps.getIpConnectivityMetrics(); |
| if (ipConnectivityMetrics == null) { |
| Slog.wtf(TAG, "Missing IIpConnectivityMetrics"); |
| return; |
| } |
| |
| try { |
| ipConnectivityMetrics.addNetdEventCallback( |
| INetdEventCallback.CALLBACK_CALLER_CONNECTIVITY_SERVICE, |
| mNetdEventCallback); |
| } catch (Exception e) { |
| loge("Error registering netd callback: " + e); |
| } |
| } |
| |
| private final INetworkPolicyListener mPolicyListener = new NetworkPolicyManager.Listener() { |
| @Override |
| public void onUidRulesChanged(int uid, int uidRules) { |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_UID_RULES_CHANGED, uid, uidRules)); |
| } |
| @Override |
| public void onRestrictBackgroundChanged(boolean restrictBackground) { |
| // caller is NPMS, since we only register with them |
| if (LOGD_BLOCKED_NETWORKINFO) { |
| log("onRestrictBackgroundChanged(restrictBackground=" + restrictBackground + ")"); |
| } |
| mHandler.sendMessage(mHandler.obtainMessage( |
| EVENT_DATA_SAVER_CHANGED, restrictBackground ? 1 : 0, 0)); |
| } |
| }; |
| |
| void handleUidRulesChanged(int uid, int newRules) { |
| // skip update when we've already applied rules |
| final int oldRules = mUidRules.get(uid, RULE_NONE); |
| if (oldRules == newRules) return; |
| |
| maybeNotifyNetworkBlockedForNewUidRules(uid, newRules); |
| |
| if (newRules == RULE_NONE) { |
| mUidRules.delete(uid); |
| } else { |
| mUidRules.put(uid, newRules); |
| } |
| } |
| |
| void handleRestrictBackgroundChanged(boolean restrictBackground) { |
| if (mRestrictBackground == restrictBackground) return; |
| |
| for (final NetworkAgentInfo nai : mNetworkAgentInfos.values()) { |
| final boolean curMetered = nai.networkCapabilities.isMetered(); |
| maybeNotifyNetworkBlocked(nai, curMetered, curMetered, mRestrictBackground, |
| restrictBackground); |
| } |
| |
| mRestrictBackground = restrictBackground; |
| } |
| |
| private boolean isUidNetworkingWithVpnBlocked(int uid, int uidRules, boolean isNetworkMetered, |
| boolean isBackgroundRestricted) { |
| synchronized (mVpns) { |
| final Vpn vpn = mVpns.get(UserHandle.getUserId(uid)); |
| // Because the return value of this function depends on the list of UIDs the |
| // always-on VPN blocks when in lockdown mode, when the always-on VPN changes that |
| // list all state depending on the return value of this function has to be recomputed. |
| // TODO: add a trigger when the always-on VPN sets its blocked UIDs to reevaluate and |
| // send the necessary onBlockedStatusChanged callbacks. |
| if (vpn != null && vpn.getLockdown() && vpn.isBlockingUid(uid)) { |
| return true; |
| } |
| } |
| |
| return NetworkPolicyManagerInternal.isUidNetworkingBlocked(uid, uidRules, |
| isNetworkMetered, isBackgroundRestricted); |
| } |
| |
| /** |
| * Require that the caller is either in the same user or has appropriate permission to interact |
| * across users. |
| * |
| * @param userId Target user for whatever operation the current IPC is supposed to perform. |
| */ |
| private void enforceCrossUserPermission(int userId) { |
| if (userId == UserHandle.getCallingUserId()) { |
| // Not a cross-user call. |
| return; |
| } |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.INTERACT_ACROSS_USERS_FULL, |
| "ConnectivityService"); |
| } |
| |
| private boolean checkAnyPermissionOf(String... permissions) { |
| for (String permission : permissions) { |
| if (mContext.checkCallingOrSelfPermission(permission) == PERMISSION_GRANTED) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private boolean checkAnyPermissionOf(int pid, int uid, String... permissions) { |
| for (String permission : permissions) { |
| if (mContext.checkPermission(permission, pid, uid) == PERMISSION_GRANTED) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private void enforceAnyPermissionOf(String... permissions) { |
| if (!checkAnyPermissionOf(permissions)) { |
| throw new SecurityException("Requires one of the following permissions: " |
| + String.join(", ", permissions) + "."); |
| } |
| } |
| |
| 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() { |
| ConnectivityManager.enforceChangePermission(mContext); |
| } |
| |
| private void enforceSettingsPermission() { |
| enforceAnyPermissionOf( |
| android.Manifest.permission.NETWORK_SETTINGS, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK); |
| } |
| |
| private void enforceNetworkFactoryPermission() { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.NETWORK_FACTORY, |
| "ConnectivityService"); |
| } |
| |
| private boolean checkSettingsPermission() { |
| return checkAnyPermissionOf( |
| android.Manifest.permission.NETWORK_SETTINGS, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK); |
| } |
| |
| private boolean checkSettingsPermission(int pid, int uid) { |
| return PERMISSION_GRANTED == mContext.checkPermission( |
| android.Manifest.permission.NETWORK_SETTINGS, pid, uid) |
| || PERMISSION_GRANTED == mContext.checkPermission( |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK, pid, uid); |
| } |
| |
| private void enforceControlAlwaysOnVpnPermission() { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CONTROL_ALWAYS_ON_VPN, |
| "ConnectivityService"); |
| } |
| |
| private void enforceNetworkStackOrSettingsPermission() { |
| enforceAnyPermissionOf( |
| android.Manifest.permission.NETWORK_SETTINGS, |
| android.Manifest.permission.NETWORK_STACK, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK); |
| } |
| |
| private void enforceNetworkStackSettingsOrSetup() { |
| enforceAnyPermissionOf( |
| android.Manifest.permission.NETWORK_SETTINGS, |
| android.Manifest.permission.NETWORK_SETUP_WIZARD, |
| android.Manifest.permission.NETWORK_STACK, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK); |
| } |
| |
| private void enforceAirplaneModePermission() { |
| enforceAnyPermissionOf( |
| android.Manifest.permission.NETWORK_AIRPLANE_MODE, |
| android.Manifest.permission.NETWORK_SETTINGS, |
| android.Manifest.permission.NETWORK_SETUP_WIZARD, |
| android.Manifest.permission.NETWORK_STACK, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK); |
| } |
| |
| private boolean checkNetworkStackPermission() { |
| return checkAnyPermissionOf( |
| android.Manifest.permission.NETWORK_STACK, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK); |
| } |
| |
| private boolean checkNetworkStackPermission(int pid, int uid) { |
| return checkAnyPermissionOf(pid, uid, |
| android.Manifest.permission.NETWORK_STACK, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK); |
| } |
| |
| private boolean checkNetworkSignalStrengthWakeupPermission(int pid, int uid) { |
| return checkAnyPermissionOf(pid, uid, |
| android.Manifest.permission.NETWORK_SIGNAL_STRENGTH_WAKEUP, |
| NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK); |
| } |
| |
| private void enforceConnectivityRestrictedNetworksPermission() { |
| try { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CONNECTIVITY_USE_RESTRICTED_NETWORKS, |
| "ConnectivityService"); |
| return; |
| } catch (SecurityException e) { /* fallback to ConnectivityInternalPermission */ } |
| // TODO: Remove this fallback check after all apps have declared |
| // CONNECTIVITY_USE_RESTRICTED_NETWORKS. |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.CONNECTIVITY_INTERNAL, |
| "ConnectivityService"); |
| } |
| |
| private void enforceKeepalivePermission() { |
| mContext.enforceCallingOrSelfPermission(KeepaliveTracker.PERMISSION, "ConnectivityService"); |
| } |
| |
| // Public because it's used by mLockdownTracker. |
| public void sendConnectedBroadcast(NetworkInfo info) { |
| NetworkStack.checkNetworkStackPermission(mContext); |
| sendGeneralBroadcast(info, CONNECTIVITY_ACTION); |
| } |
| |
| private void sendInetConditionBroadcast(NetworkInfo info) { |
| sendGeneralBroadcast(info, ConnectivityManager.INET_CONDITION_ACTION); |
| } |
| |
| private Intent makeGeneralIntent(NetworkInfo info, String bcastType) { |
| synchronized (mVpns) { |
| if (mLockdownTracker != null) { |
| info = new NetworkInfo(info); |
| mLockdownTracker.augmentNetworkInfo(info); |
| } |
| } |
| |
| Intent intent = new Intent(bcastType); |
| intent.putExtra(ConnectivityManager.EXTRA_NETWORK_INFO, new NetworkInfo(info)); |
| intent.putExtra(ConnectivityManager.EXTRA_NETWORK_TYPE, info.getType()); |
| if (info.isFailover()) { |
| intent.putExtra(ConnectivityManager.EXTRA_IS_FAILOVER, true); |
| info.setFailover(false); |
| } |
| if (info.getReason() != null) { |
| intent.putExtra(ConnectivityManager.EXTRA_REASON, info.getReason()); |
| } |
| if (info.getExtraInfo() != null) { |
| intent.putExtra(ConnectivityManager.EXTRA_EXTRA_INFO, |
| info.getExtraInfo()); |
| } |
| intent.putExtra(ConnectivityManager.EXTRA_INET_CONDITION, mDefaultInetConditionPublished); |
| return intent; |
| } |
| |
| private void sendGeneralBroadcast(NetworkInfo info, String bcastType) { |
| sendStickyBroadcast(makeGeneralIntent(info, bcastType)); |
| } |
| |
| private void sendDataActivityBroadcast(int deviceType, boolean active, long tsNanos) { |
| Intent intent = new Intent(ConnectivityManager.ACTION_DATA_ACTIVITY_CHANGE); |
| intent.putExtra(ConnectivityManager.EXTRA_DEVICE_TYPE, deviceType); |
| intent.putExtra(ConnectivityManager.EXTRA_IS_ACTIVE, active); |
| intent.putExtra(ConnectivityManager.EXTRA_REALTIME_NS, tsNanos); |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| mContext.sendOrderedBroadcastAsUser(intent, UserHandle.ALL, |
| RECEIVE_DATA_ACTIVITY_CHANGE, null, null, 0, null, null); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private void sendStickyBroadcast(Intent intent) { |
| synchronized (this) { |
| if (!mSystemReady |
| && intent.getAction().equals(ConnectivityManager.CONNECTIVITY_ACTION)) { |
| mInitialBroadcast = new Intent(intent); |
| } |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); |
| if (VDBG) { |
| log("sendStickyBroadcast: action=" + intent.getAction()); |
| } |
| |
| Bundle options = null; |
| final long ident = Binder.clearCallingIdentity(); |
| if (ConnectivityManager.CONNECTIVITY_ACTION.equals(intent.getAction())) { |
| final NetworkInfo ni = intent.getParcelableExtra( |
| ConnectivityManager.EXTRA_NETWORK_INFO); |
| if (ni.getType() == ConnectivityManager.TYPE_MOBILE_SUPL) { |
| intent.setAction(ConnectivityManager.CONNECTIVITY_ACTION_SUPL); |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); |
| } else { |
| BroadcastOptions opts = BroadcastOptions.makeBasic(); |
| opts.setMaxManifestReceiverApiLevel(Build.VERSION_CODES.M); |
| options = opts.toBundle(); |
| } |
| final IBatteryStats bs = mDeps.getBatteryStatsService(); |
| try { |
| bs.noteConnectivityChanged(intent.getIntExtra( |
| ConnectivityManager.EXTRA_NETWORK_TYPE, ConnectivityManager.TYPE_NONE), |
| ni.getState().toString()); |
| } catch (RemoteException e) { |
| } |
| intent.addFlags(Intent.FLAG_RECEIVER_VISIBLE_TO_INSTANT_APPS); |
| } |
| try { |
| mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL, options); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| } |
| |
| /** |
| * Called when the system is ready and ConnectivityService can initialize remaining components. |
| */ |
| @VisibleForTesting |
| public void systemReady() { |
| // Let PermissionMonitor#startMonitoring() running in the beginning of the systemReady |
| // before MultipathPolicyTracker.start(). Since mApps in PermissionMonitor needs to be |
| // populated first to ensure that listening network request which is sent by |
| // MultipathPolicyTracker won't be added NET_CAPABILITY_FOREGROUND capability. |
| mPermissionMonitor.startMonitoring(); |
| mProxyTracker.loadGlobalProxy(); |
| registerNetdEventCallback(); |
| |
| synchronized (this) { |
| mSystemReady = true; |
| if (mInitialBroadcast != null) { |
| mContext.sendStickyBroadcastAsUser(mInitialBroadcast, UserHandle.ALL); |
| mInitialBroadcast = null; |
| } |
| } |
| |
| // Try bringing up tracker, but KeyStore won't be ready yet for secondary users so wait |
| // for user to unlock device too. |
| updateLockdownVpn(); |
| |
| // Create network requests for always-on networks. |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_CONFIGURE_ALWAYS_ON_NETWORKS)); |
| |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_SYSTEM_READY)); |
| } |
| |
| /** |
| * 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; |
| final int type; |
| |
| if (networkAgent.networkCapabilities.hasTransport( |
| NetworkCapabilities.TRANSPORT_CELLULAR)) { |
| timeout = Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.DATA_ACTIVITY_TIMEOUT_MOBILE, |
| 10); |
| type = ConnectivityManager.TYPE_MOBILE; |
| } else if (networkAgent.networkCapabilities.hasTransport( |
| NetworkCapabilities.TRANSPORT_WIFI)) { |
| timeout = Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.DATA_ACTIVITY_TIMEOUT_WIFI, |
| 15); |
| type = ConnectivityManager.TYPE_WIFI; |
| } else { |
| return; // do not track any other networks |
| } |
| |
| if (timeout > 0 && iface != null) { |
| try { |
| mNMS.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 idle timer setup for this interface |
| mNMS.removeIdleTimer(iface); |
| } catch (Exception e) { |
| loge("Exception in removeDataActivityTracking " + e); |
| } |
| } |
| } |
| |
| /** |
| * Update data activity tracking when network state is updated. |
| */ |
| private void updateDataActivityTracking(NetworkAgentInfo newNetwork, |
| NetworkAgentInfo oldNetwork) { |
| if (newNetwork != null) { |
| setupDataActivityTracking(newNetwork); |
| } |
| if (oldNetwork != null) { |
| removeDataActivityTracking(oldNetwork); |
| } |
| } |
| /** |
| * Reads the network specific MTU size from resources. |
| * 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 && mtu == 0) { |
| // Silently ignore unset MTU value. |
| return; |
| } |
| if (oldLp != null && newLp.isIdenticalMtu(oldLp)) { |
| if (VDBG) log("identical MTU - not setting"); |
| return; |
| } |
| if (!LinkProperties.isValidMtu(mtu, newLp.hasGlobalIpv6Address())) { |
| if (mtu != 0) 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 (VDBG || DDBG) log("Setting MTU size: " + iface + ", " + mtu); |
| mNMS.setMtu(iface, mtu); |
| } catch (Exception e) { |
| Slog.e(TAG, "exception in setMtu()" + e); |
| } |
| } |
| |
| @VisibleForTesting |
| protected static final String DEFAULT_TCP_BUFFER_SIZES = "4096,87380,110208,4096,16384,110208"; |
| |
| private void updateTcpBufferSizes(String tcpBufferSizes) { |
| 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 (VDBG || DDBG) Slog.d(TAG, "Setting tx/rx TCP buffers to " + tcpBufferSizes); |
| |
| String rmemValues = String.join(" ", values[0], values[1], values[2]); |
| String wmemValues = String.join(" ", values[3], values[4], values[5]); |
| mNetd.setTcpRWmemorySize(rmemValues, wmemValues); |
| mCurrentTcpBufferSizes = tcpBufferSizes; |
| } catch (RemoteException | ServiceSpecificException e) { |
| loge("Can't set TCP buffer sizes:" + e); |
| } |
| |
| Integer rwndValue = Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.TCP_DEFAULT_INIT_RWND, |
| mSystemProperties.getInt("net.tcp.default_init_rwnd", 0)); |
| final String sysctlKey = "sys.sysctl.tcp_def_init_rwnd"; |
| if (rwndValue != 0) { |
| mSystemProperties.set(sysctlKey, rwndValue.toString()); |
| } |
| } |
| |
| @Override |
| public int getRestoreDefaultNetworkDelay(int networkType) { |
| String restoreDefaultNetworkDelayStr = mSystemProperties.get( |
| NETWORK_RESTORE_DELAY_PROP_NAME); |
| if(restoreDefaultNetworkDelayStr != null && |
| restoreDefaultNetworkDelayStr.length() != 0) { |
| try { |
| return Integer.parseInt(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; |
| } |
| |
| private void dumpNetworkDiagnostics(IndentingPrintWriter pw) { |
| final List<NetworkDiagnostics> netDiags = new ArrayList<NetworkDiagnostics>(); |
| final long DIAG_TIME_MS = 5000; |
| for (NetworkAgentInfo nai : networksSortedById()) { |
| // Start gathering diagnostic information. |
| netDiags.add(new NetworkDiagnostics( |
| nai.network, |
| new LinkProperties(nai.linkProperties), // Must be a copy. |
| DIAG_TIME_MS)); |
| } |
| |
| for (NetworkDiagnostics netDiag : netDiags) { |
| pw.println(); |
| netDiag.waitForMeasurements(); |
| netDiag.dump(pw); |
| } |
| } |
| |
| @Override |
| protected void dump(@NonNull FileDescriptor fd, @NonNull PrintWriter writer, |
| @Nullable String[] args) { |
| PriorityDump.dump(mPriorityDumper, fd, writer, args); |
| } |
| |
| private void doDump(FileDescriptor fd, PrintWriter writer, String[] args, boolean asProto) { |
| final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); |
| if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return; |
| if (asProto) return; |
| |
| if (ArrayUtils.contains(args, DIAG_ARG)) { |
| dumpNetworkDiagnostics(pw); |
| return; |
| } else if (ArrayUtils.contains(args, NETWORK_ARG)) { |
| dumpNetworks(pw); |
| return; |
| } else if (ArrayUtils.contains(args, REQUEST_ARG)) { |
| dumpNetworkRequests(pw); |
| return; |
| } |
| |
| pw.print("NetworkProviders for:"); |
| for (NetworkProviderInfo npi : mNetworkProviderInfos.values()) { |
| pw.print(" " + npi.name); |
| } |
| pw.println(); |
| pw.println(); |
| |
| final NetworkAgentInfo defaultNai = getDefaultNetwork(); |
| 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(); |
| dumpNetworks(pw); |
| pw.decreaseIndent(); |
| pw.println(); |
| |
| pw.print("Restrict background: "); |
| pw.println(mRestrictBackground); |
| pw.println(); |
| |
| pw.println("Status for known UIDs:"); |
| pw.increaseIndent(); |
| final int size = mUidRules.size(); |
| for (int i = 0; i < size; i++) { |
| // Don't crash if the array is modified while dumping in bugreports. |
| try { |
| final int uid = mUidRules.keyAt(i); |
| final int uidRules = mUidRules.get(uid, RULE_NONE); |
| pw.println("UID=" + uid + " rules=" + uidRulesToString(uidRules)); |
| } catch (ArrayIndexOutOfBoundsException e) { |
| pw.println(" ArrayIndexOutOfBoundsException"); |
| } catch (ConcurrentModificationException e) { |
| pw.println(" ConcurrentModificationException"); |
| } |
| } |
| pw.println(); |
| pw.decreaseIndent(); |
| |
| pw.println("Network Requests:"); |
| pw.increaseIndent(); |
| dumpNetworkRequests(pw); |
| pw.decreaseIndent(); |
| pw.println(); |
| |
| mLegacyTypeTracker.dump(pw); |
| |
| pw.println(); |
| mKeepaliveTracker.dump(pw); |
| |
| pw.println(); |
| dumpAvoidBadWifiSettings(pw); |
| |
| pw.println(); |
| mMultipathPolicyTracker.dump(pw); |
| |
| if (ArrayUtils.contains(args, SHORT_ARG) == false) { |
| pw.println(); |
| pw.println("mNetworkRequestInfoLogs (most recent first):"); |
| pw.increaseIndent(); |
| mNetworkRequestInfoLogs.reverseDump(fd, pw, args); |
| pw.decreaseIndent(); |
| |
| pw.println(); |
| pw.println("mNetworkInfoBlockingLogs (most recent first):"); |
| pw.increaseIndent(); |
| mNetworkInfoBlockingLogs.reverseDump(fd, pw, args); |
| pw.decreaseIndent(); |
| |
| pw.println(); |
| pw.println("NetTransition WakeLock activity (most recent first):"); |
| pw.increaseIndent(); |
| pw.println("total acquisitions: " + mTotalWakelockAcquisitions); |
| pw.println("total releases: " + mTotalWakelockReleases); |
| pw.println("cumulative duration: " + (mTotalWakelockDurationMs / 1000) + "s"); |
| pw.println("longest duration: " + (mMaxWakelockDurationMs / 1000) + "s"); |
| if (mTotalWakelockAcquisitions > mTotalWakelockReleases) { |
| long duration = SystemClock.elapsedRealtime() - mLastWakeLockAcquireTimestamp; |
| pw.println("currently holding WakeLock for: " + (duration / 1000) + "s"); |
| } |
| mWakelockLogs.reverseDump(fd, pw, args); |
| |
| pw.println(); |
| pw.println("bandwidth update requests (by uid):"); |
| pw.increaseIndent(); |
| synchronized (mBandwidthRequests) { |
| for (int i = 0; i < mBandwidthRequests.size(); i++) { |
| pw.println("[" + mBandwidthRequests.keyAt(i) |
| + "]: " + mBandwidthRequests.valueAt(i)); |
| } |
| } |
| pw.decreaseIndent(); |
| |
| pw.decreaseIndent(); |
| } |
| |
| pw.println(); |
| pw.println("NetworkStackClient logs:"); |
| pw.increaseIndent(); |
| NetworkStackClient.getInstance().dump(pw); |
| pw.decreaseIndent(); |
| |
| pw.println(); |
| pw.println("Permission Monitor:"); |
| pw.increaseIndent(); |
| mPermissionMonitor.dump(pw); |
| pw.decreaseIndent(); |
| } |
| |
| private void dumpNetworks(IndentingPrintWriter pw) { |
| for (NetworkAgentInfo nai : networksSortedById()) { |
| pw.println(nai.toString()); |
| pw.increaseIndent(); |
| pw.println(String.format( |
| "Requests: REQUEST:%d LISTEN:%d BACKGROUND_REQUEST:%d total:%d", |
| nai.numForegroundNetworkRequests(), |
| nai.numNetworkRequests() - nai.numRequestNetworkRequests(), |
| nai.numBackgroundNetworkRequests(), |
| nai.numNetworkRequests())); |
| pw.increaseIndent(); |
| for (int i = 0; i < nai.numNetworkRequests(); i++) { |
| pw.println(nai.requestAt(i).toString()); |
| } |
| pw.decreaseIndent(); |
| pw.println("Lingered:"); |
| pw.increaseIndent(); |
| nai.dumpLingerTimers(pw); |
| pw.decreaseIndent(); |
| pw.decreaseIndent(); |
| } |
| } |
| |
| private void dumpNetworkRequests(IndentingPrintWriter pw) { |
| for (NetworkRequestInfo nri : requestsSortedById()) { |
| pw.println(nri.toString()); |
| } |
| } |
| |
| /** |
| * Return an array of all current NetworkAgentInfos sorted by network id. |
| */ |
| private NetworkAgentInfo[] networksSortedById() { |
| NetworkAgentInfo[] networks = new NetworkAgentInfo[0]; |
| networks = mNetworkAgentInfos.values().toArray(networks); |
| Arrays.sort(networks, Comparator.comparingInt(nai -> nai.network.netId)); |
| return networks; |
| } |
| |
| /** |
| * Return an array of all current NetworkRequest sorted by request id. |
| */ |
| private NetworkRequestInfo[] requestsSortedById() { |
| NetworkRequestInfo[] requests = new NetworkRequestInfo[0]; |
| requests = mNetworkRequests.values().toArray(requests); |
| Arrays.sort(requests, Comparator.comparingInt(nri -> nri.request.requestId)); |
| return requests; |
| } |
| |
| private boolean isLiveNetworkAgent(NetworkAgentInfo nai, int what) { |
| if (nai.network == null) return false; |
| final NetworkAgentInfo officialNai = getNetworkAgentInfoForNetwork(nai.network); |
| if (officialNai != null && officialNai.equals(nai)) return true; |
| if (officialNai != null || VDBG) { |
| loge(eventName(what) + " - isLiveNetworkAgent found mismatched netId: " + officialNai + |
| " - " + nai); |
| } |
| return false; |
| } |
| |
| // must be stateless - things change under us. |
| private class NetworkStateTrackerHandler extends Handler { |
| public NetworkStateTrackerHandler(Looper looper) { |
| super(looper); |
| } |
| |
| private boolean maybeHandleAsyncChannelMessage(Message msg) { |
| switch (msg.what) { |
| default: |
| return false; |
| 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; |
| } |
| } |
| return true; |
| } |
| |
| private void maybeHandleNetworkAgentMessage(Message msg) { |
| NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); |
| if (nai == null) { |
| if (VDBG) { |
| log(String.format("%s from unknown NetworkAgent", eventName(msg.what))); |
| } |
| return; |
| } |
| |
| switch (msg.what) { |
| case NetworkAgent.EVENT_NETWORK_CAPABILITIES_CHANGED: { |
| final NetworkCapabilities networkCapabilities = (NetworkCapabilities) msg.obj; |
| if (networkCapabilities.hasConnectivityManagedCapability()) { |
| Slog.wtf(TAG, "BUG: " + nai + " has CS-managed capability."); |
| } |
| updateCapabilities(nai.getCurrentScore(), nai, networkCapabilities); |
| break; |
| } |
| case NetworkAgent.EVENT_NETWORK_PROPERTIES_CHANGED: { |
| handleUpdateLinkProperties(nai, (LinkProperties) msg.obj); |
| break; |
| } |
| case NetworkAgent.EVENT_NETWORK_INFO_CHANGED: { |
| NetworkInfo info = (NetworkInfo) msg.obj; |
| updateNetworkInfo(nai, info); |
| break; |
| } |
| case NetworkAgent.EVENT_NETWORK_SCORE_CHANGED: { |
| final NetworkScore ns = (NetworkScore) msg.obj; |
| updateNetworkScore(nai, ns); |
| break; |
| } |
| case NetworkAgent.EVENT_SET_EXPLICITLY_SELECTED: { |
| if (nai.everConnected) { |
| loge("ERROR: cannot call explicitlySelected on already-connected network"); |
| } |
| nai.networkAgentConfig.explicitlySelected = toBool(msg.arg1); |
| nai.networkAgentConfig.acceptUnvalidated = toBool(msg.arg1) && toBool(msg.arg2); |
| // Mark the network as temporarily accepting partial connectivity so that it |
| // will be validated (and possibly become default) even if it only provides |
| // partial internet access. Note that if user connects to partial connectivity |
| // and choose "don't ask again", then wifi disconnected by some reasons(maybe |
| // out of wifi coverage) and if the same wifi is available again, the device |
| // will auto connect to this wifi even though the wifi has "no internet". |
| // TODO: Evaluate using a separate setting in IpMemoryStore. |
| nai.networkAgentConfig.acceptPartialConnectivity = toBool(msg.arg2); |
| break; |
| } |
| case NetworkAgent.EVENT_SOCKET_KEEPALIVE: { |
| mKeepaliveTracker.handleEventSocketKeepalive(nai, msg); |
| break; |
| } |
| } |
| } |
| |
| private boolean maybeHandleNetworkMonitorMessage(Message msg) { |
| switch (msg.what) { |
| default: |
| return false; |
| case EVENT_PROBE_STATUS_CHANGED: { |
| final Integer netId = (Integer) msg.obj; |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetId(netId); |
| if (nai == null) { |
| break; |
| } |
| final boolean probePrivateDnsCompleted = |
| ((msg.arg1 & NETWORK_VALIDATION_PROBE_PRIVDNS) != 0); |
| final boolean privateDnsBroken = |
| ((msg.arg2 & NETWORK_VALIDATION_PROBE_PRIVDNS) == 0); |
| if (probePrivateDnsCompleted) { |
| if (nai.networkCapabilities.isPrivateDnsBroken() != privateDnsBroken) { |
| nai.networkCapabilities.setPrivateDnsBroken(privateDnsBroken); |
| final int oldScore = nai.getCurrentScore(); |
| updateCapabilities(oldScore, nai, nai.networkCapabilities); |
| } |
| // Only show the notification when the private DNS is broken and the |
| // PRIVATE_DNS_BROKEN notification hasn't shown since last valid. |
| if (privateDnsBroken && !nai.networkAgentConfig.hasShownBroken) { |
| showNetworkNotification(nai, NotificationType.PRIVATE_DNS_BROKEN); |
| } |
| nai.networkAgentConfig.hasShownBroken = privateDnsBroken; |
| } else if (nai.networkCapabilities.isPrivateDnsBroken()) { |
| // If probePrivateDnsCompleted is false but nai.networkCapabilities says |
| // private DNS is broken, it means this network is being reevaluated. |
| // Either probing private DNS is not necessary any more or it hasn't been |
| // done yet. In either case, the networkCapabilities should be updated to |
| // reflect the new status. |
| nai.networkCapabilities.setPrivateDnsBroken(false); |
| final int oldScore = nai.getCurrentScore(); |
| updateCapabilities(oldScore, nai, nai.networkCapabilities); |
| nai.networkAgentConfig.hasShownBroken = false; |
| } |
| break; |
| } |
| case EVENT_NETWORK_TESTED: { |
| final NetworkTestedResults results = (NetworkTestedResults) msg.obj; |
| |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetId(results.mNetId); |
| if (nai == null) break; |
| |
| handleNetworkTested(nai, results.mTestResult, |
| (results.mRedirectUrl == null) ? "" : results.mRedirectUrl); |
| |
| // Invoke ConnectivityReport generation for this Network test event. |
| final Message m = |
| mConnectivityDiagnosticsHandler.obtainMessage( |
| ConnectivityDiagnosticsHandler.EVENT_NETWORK_TESTED, |
| new ConnectivityReportEvent(results.mTimestampMillis, nai)); |
| m.setData(msg.getData()); |
| mConnectivityDiagnosticsHandler.sendMessage(m); |
| break; |
| } |
| case EVENT_PROVISIONING_NOTIFICATION: { |
| final int netId = msg.arg2; |
| final boolean visible = toBool(msg.arg1); |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetId(netId); |
| // If captive portal status has changed, update capabilities or disconnect. |
| if (nai != null && (visible != nai.lastCaptivePortalDetected)) { |
| final int oldScore = nai.getCurrentScore(); |
| nai.lastCaptivePortalDetected = visible; |
| nai.everCaptivePortalDetected |= visible; |
| if (nai.lastCaptivePortalDetected && |
| Settings.Global.CAPTIVE_PORTAL_MODE_AVOID == getCaptivePortalMode()) { |
| if (DBG) log("Avoiding captive portal network: " + nai.toShortString()); |
| nai.asyncChannel.sendMessage( |
| NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); |
| teardownUnneededNetwork(nai); |
| break; |
| } |
| updateCapabilities(oldScore, nai, nai.networkCapabilities); |
| } |
| if (!visible) { |
| // Only clear SIGN_IN and NETWORK_SWITCH notifications here, or else other |
| // notifications belong to the same network may be cleared unexpectedly. |
| mNotifier.clearNotification(netId, NotificationType.SIGN_IN); |
| mNotifier.clearNotification(netId, NotificationType.NETWORK_SWITCH); |
| } else { |
| if (nai == null) { |
| loge("EVENT_PROVISIONING_NOTIFICATION from unknown NetworkMonitor"); |
| break; |
| } |
| if (!nai.networkAgentConfig.provisioningNotificationDisabled) { |
| mNotifier.showNotification(netId, NotificationType.SIGN_IN, nai, null, |
| (PendingIntent) msg.obj, |
| nai.networkAgentConfig.explicitlySelected); |
| } |
| } |
| break; |
| } |
| case EVENT_PRIVATE_DNS_CONFIG_RESOLVED: { |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetId(msg.arg2); |
| if (nai == null) break; |
| |
| updatePrivateDns(nai, (PrivateDnsConfig) msg.obj); |
| break; |
| } |
| } |
| return true; |
| } |
| |
| private void handleNetworkTested( |
| @NonNull NetworkAgentInfo nai, int testResult, @NonNull String redirectUrl) { |
| final boolean wasPartial = nai.partialConnectivity; |
| nai.partialConnectivity = ((testResult & NETWORK_VALIDATION_RESULT_PARTIAL) != 0); |
| final boolean partialConnectivityChanged = |
| (wasPartial != nai.partialConnectivity); |
| |
| final boolean valid = ((testResult & NETWORK_VALIDATION_RESULT_VALID) != 0); |
| final boolean wasValidated = nai.lastValidated; |
| final boolean wasDefault = isDefaultNetwork(nai); |
| // Only show a connected notification if the network is pending validation |
| // after the captive portal app was open, and it has now validated. |
| if (nai.captivePortalValidationPending && valid) { |
| // User is now logged in, network validated. |
| nai.captivePortalValidationPending = false; |
| showNetworkNotification(nai, NotificationType.LOGGED_IN); |
| } |
| |
| if (DBG) { |
| final String logMsg = !TextUtils.isEmpty(redirectUrl) |
| ? " with redirect to " + redirectUrl |
| : ""; |
| log(nai.toShortString() + " validation " + (valid ? "passed" : "failed") + logMsg); |
| } |
| if (valid != nai.lastValidated) { |
| if (wasDefault) { |
| mDeps.getMetricsLogger() |
| .defaultNetworkMetrics().logDefaultNetworkValidity( |
| SystemClock.elapsedRealtime(), valid); |
| } |
| final int oldScore = nai.getCurrentScore(); |
| nai.lastValidated = valid; |
| nai.everValidated |= valid; |
| updateCapabilities(oldScore, nai, nai.networkCapabilities); |
| // If score has changed, rebroadcast to NetworkProviders. b/17726566 |
| if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai); |
| if (valid) { |
| handleFreshlyValidatedNetwork(nai); |
| // Clear NO_INTERNET, PRIVATE_DNS_BROKEN, PARTIAL_CONNECTIVITY and |
| // LOST_INTERNET notifications if network becomes valid. |
| mNotifier.clearNotification(nai.network.netId, |
| NotificationType.NO_INTERNET); |
| mNotifier.clearNotification(nai.network.netId, |
| NotificationType.LOST_INTERNET); |
| mNotifier.clearNotification(nai.network.netId, |
| NotificationType.PARTIAL_CONNECTIVITY); |
| mNotifier.clearNotification(nai.network.netId, |
| NotificationType.PRIVATE_DNS_BROKEN); |
| // If network becomes valid, the hasShownBroken should be reset for |
| // that network so that the notification will be fired when the private |
| // DNS is broken again. |
| nai.networkAgentConfig.hasShownBroken = false; |
| } |
| } else if (partialConnectivityChanged) { |
| updateCapabilities(nai.getCurrentScore(), nai, nai.networkCapabilities); |
| } |
| updateInetCondition(nai); |
| // Let the NetworkAgent know the state of its network |
| Bundle redirectUrlBundle = new Bundle(); |
| redirectUrlBundle.putString(NetworkAgent.REDIRECT_URL_KEY, redirectUrl); |
| // TODO: Evaluate to update partial connectivity to status to NetworkAgent. |
| nai.asyncChannel.sendMessage( |
| NetworkAgent.CMD_REPORT_NETWORK_STATUS, |
| (valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK), |
| 0, redirectUrlBundle); |
| |
| // If NetworkMonitor detects partial connectivity before |
| // EVENT_PROMPT_UNVALIDATED arrives, show the partial connectivity notification |
| // immediately. Re-notify partial connectivity silently if no internet |
| // notification already there. |
| if (!wasPartial && nai.partialConnectivity) { |
| // Remove delayed message if there is a pending message. |
| mHandler.removeMessages(EVENT_PROMPT_UNVALIDATED, nai.network); |
| handlePromptUnvalidated(nai.network); |
| } |
| |
| if (wasValidated && !nai.lastValidated) { |
| handleNetworkUnvalidated(nai); |
| } |
| } |
| |
| private int getCaptivePortalMode() { |
| return Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.CAPTIVE_PORTAL_MODE, |
| Settings.Global.CAPTIVE_PORTAL_MODE_PROMPT); |
| } |
| |
| private boolean maybeHandleNetworkAgentInfoMessage(Message msg) { |
| switch (msg.what) { |
| default: |
| return false; |
| case NetworkAgentInfo.EVENT_NETWORK_LINGER_COMPLETE: { |
| NetworkAgentInfo nai = (NetworkAgentInfo) msg.obj; |
| if (nai != null && isLiveNetworkAgent(nai, msg.what)) { |
| handleLingerComplete(nai); |
| } |
| break; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| if (!maybeHandleAsyncChannelMessage(msg) |
| && !maybeHandleNetworkMonitorMessage(msg) |
| && !maybeHandleNetworkAgentInfoMessage(msg)) { |
| maybeHandleNetworkAgentMessage(msg); |
| } |
| } |
| } |
| |
| private class NetworkMonitorCallbacks extends INetworkMonitorCallbacks.Stub { |
| private final int mNetId; |
| private final AutodestructReference<NetworkAgentInfo> mNai; |
| |
| private NetworkMonitorCallbacks(NetworkAgentInfo nai) { |
| mNetId = nai.network.netId; |
| mNai = new AutodestructReference<>(nai); |
| } |
| |
| @Override |
| public void onNetworkMonitorCreated(INetworkMonitor networkMonitor) { |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_AGENT, |
| new Pair<>(mNai.getAndDestroy(), networkMonitor))); |
| } |
| |
| @Override |
| public void notifyNetworkTested(int testResult, @Nullable String redirectUrl) { |
| notifyNetworkTestedWithExtras(testResult, redirectUrl, SystemClock.elapsedRealtime(), |
| PersistableBundle.EMPTY); |
| } |
| |
| @Override |
| public void notifyNetworkTestedWithExtras( |
| int testResult, |
| @Nullable String redirectUrl, |
| long timestampMillis, |
| @NonNull PersistableBundle extras) { |
| final Message msg = |
| mTrackerHandler.obtainMessage( |
| EVENT_NETWORK_TESTED, |
| new NetworkTestedResults( |
| mNetId, testResult, timestampMillis, redirectUrl)); |
| msg.setData(new Bundle(extras)); |
| mTrackerHandler.sendMessage(msg); |
| } |
| |
| @Override |
| public void notifyPrivateDnsConfigResolved(PrivateDnsConfigParcel config) { |
| mTrackerHandler.sendMessage(mTrackerHandler.obtainMessage( |
| EVENT_PRIVATE_DNS_CONFIG_RESOLVED, |
| 0, mNetId, PrivateDnsConfig.fromParcel(config))); |
| } |
| |
| @Override |
| public void notifyProbeStatusChanged(int probesCompleted, int probesSucceeded) { |
| mTrackerHandler.sendMessage(mTrackerHandler.obtainMessage( |
| EVENT_PROBE_STATUS_CHANGED, |
| probesCompleted, probesSucceeded, new Integer(mNetId))); |
| } |
| |
| @Override |
| public void showProvisioningNotification(String action, String packageName) { |
| final Intent intent = new Intent(action); |
| intent.setPackage(packageName); |
| |
| final PendingIntent pendingIntent; |
| // Only the system server can register notifications with package "android" |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| pendingIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| mTrackerHandler.sendMessage(mTrackerHandler.obtainMessage( |
| EVENT_PROVISIONING_NOTIFICATION, PROVISIONING_NOTIFICATION_SHOW, |
| mNetId, pendingIntent)); |
| } |
| |
| @Override |
| public void hideProvisioningNotification() { |
| mTrackerHandler.sendMessage(mTrackerHandler.obtainMessage( |
| EVENT_PROVISIONING_NOTIFICATION, PROVISIONING_NOTIFICATION_HIDE, mNetId)); |
| } |
| |
| @Override |
| public void notifyDataStallSuspected( |
| long timestampMillis, int detectionMethod, PersistableBundle extras) { |
| final Message msg = |
| mConnectivityDiagnosticsHandler.obtainMessage( |
| ConnectivityDiagnosticsHandler.EVENT_DATA_STALL_SUSPECTED, |
| detectionMethod, mNetId, timestampMillis); |
| msg.setData(new Bundle(extras)); |
| |
| // NetworkStateTrackerHandler currently doesn't take any actions based on data |
| // stalls so send the message directly to ConnectivityDiagnosticsHandler and avoid |
| // the cost of going through two handlers. |
| mConnectivityDiagnosticsHandler.sendMessage(msg); |
| } |
| |
| @Override |
| public int getInterfaceVersion() { |
| return this.VERSION; |
| } |
| |
| @Override |
| public String getInterfaceHash() { |
| return this.HASH; |
| } |
| } |
| |
| private boolean networkRequiresPrivateDnsValidation(NetworkAgentInfo nai) { |
| return isPrivateDnsValidationRequired(nai.networkCapabilities); |
| } |
| |
| private void handleFreshlyValidatedNetwork(NetworkAgentInfo nai) { |
| if (nai == null) return; |
| // If the Private DNS mode is opportunistic, reprogram the DNS servers |
| // in order to restart a validation pass from within netd. |
| final PrivateDnsConfig cfg = mDnsManager.getPrivateDnsConfig(); |
| if (cfg.useTls && TextUtils.isEmpty(cfg.hostname)) { |
| updateDnses(nai.linkProperties, null, nai.network.netId); |
| } |
| } |
| |
| private void handlePrivateDnsSettingsChanged() { |
| final PrivateDnsConfig cfg = mDnsManager.getPrivateDnsConfig(); |
| |
| for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { |
| handlePerNetworkPrivateDnsConfig(nai, cfg); |
| if (networkRequiresPrivateDnsValidation(nai)) { |
| handleUpdateLinkProperties(nai, new LinkProperties(nai.linkProperties)); |
| } |
| } |
| } |
| |
| private void handlePerNetworkPrivateDnsConfig(NetworkAgentInfo nai, PrivateDnsConfig cfg) { |
| // Private DNS only ever applies to networks that might provide |
| // Internet access and therefore also require validation. |
| if (!networkRequiresPrivateDnsValidation(nai)) return; |
| |
| // Notify the NetworkAgentInfo/NetworkMonitor in case NetworkMonitor needs to cancel or |
| // schedule DNS resolutions. If a DNS resolution is required the |
| // result will be sent back to us. |
| nai.networkMonitor().notifyPrivateDnsChanged(cfg.toParcel()); |
| |
| // With Private DNS bypass support, we can proceed to update the |
| // Private DNS config immediately, even if we're in strict mode |
| // and have not yet resolved the provider name into a set of IPs. |
| updatePrivateDns(nai, cfg); |
| } |
| |
| private void updatePrivateDns(NetworkAgentInfo nai, PrivateDnsConfig newCfg) { |
| mDnsManager.updatePrivateDns(nai.network, newCfg); |
| updateDnses(nai.linkProperties, null, nai.network.netId); |
| } |
| |
| private void handlePrivateDnsValidationUpdate(PrivateDnsValidationUpdate update) { |
| NetworkAgentInfo nai = getNetworkAgentInfoForNetId(update.netId); |
| if (nai == null) { |
| return; |
| } |
| mDnsManager.updatePrivateDnsValidation(update); |
| handleUpdateLinkProperties(nai, new LinkProperties(nai.linkProperties)); |
| } |
| |
| private void handleNat64PrefixEvent(int netId, boolean added, String prefixString, |
| int prefixLength) { |
| NetworkAgentInfo nai = mNetworkForNetId.get(netId); |
| if (nai == null) return; |
| |
| log(String.format("NAT64 prefix %s on netId %d: %s/%d", |
| (added ? "added" : "removed"), netId, prefixString, prefixLength)); |
| |
| IpPrefix prefix = null; |
| if (added) { |
| try { |
| prefix = new IpPrefix(InetAddresses.parseNumericAddress(prefixString), |
| prefixLength); |
| } catch (IllegalArgumentException e) { |
| loge("Invalid NAT64 prefix " + prefixString + "/" + prefixLength); |
| return; |
| } |
| } |
| |
| nai.clatd.setNat64Prefix(prefix); |
| handleUpdateLinkProperties(nai, new LinkProperties(nai.linkProperties)); |
| } |
| |
| /** |
| * Updates the linger state from the network requests inside the NAI. |
| * @param nai the agent info to update |
| * @param now the timestamp of the event causing this update |
| * @return whether the network was lingered as a result of this update |
| */ |
| private boolean updateLingerState(@NonNull final NetworkAgentInfo nai, final long now) { |
| // 1. Update the linger timer. If it's changed, reschedule or cancel the alarm. |
| // 2. If the network was lingering and there are now requests, unlinger it. |
| // 3. If this network is unneeded (which implies it is not lingering), and there is at least |
| // one lingered request, start lingering. |
| nai.updateLingerTimer(); |
| if (nai.isLingering() && nai.numForegroundNetworkRequests() > 0) { |
| if (DBG) log("Unlingering " + nai.toShortString()); |
| nai.unlinger(); |
| logNetworkEvent(nai, NetworkEvent.NETWORK_UNLINGER); |
| } else if (unneeded(nai, UnneededFor.LINGER) && nai.getLingerExpiry() > 0) { |
| if (DBG) { |
| final int lingerTime = (int) (nai.getLingerExpiry() - now); |
| log("Lingering " + nai.toShortString() + " for " + lingerTime + "ms"); |
| } |
| nai.linger(); |
| logNetworkEvent(nai, NetworkEvent.NETWORK_LINGER); |
| return true; |
| } |
| return false; |
| } |
| |
| private void handleAsyncChannelHalfConnect(Message msg) { |
| ensureRunningOnConnectivityServiceThread(); |
| final AsyncChannel ac = (AsyncChannel) msg.obj; |
| if (mNetworkProviderInfos.containsKey(msg.replyTo)) { |
| if (msg.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { |
| if (VDBG) log("NetworkFactory connected"); |
| // Finish setting up the full connection |
| NetworkProviderInfo npi = mNetworkProviderInfos.get(msg.replyTo); |
| npi.completeConnection(); |
| sendAllRequestsToProvider(npi); |
| } else { |
| loge("Error connecting NetworkFactory"); |
| mNetworkProviderInfos.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) { |
| final boolean wasDefault = isDefaultNetwork(nai); |
| synchronized (mNetworkForNetId) { |
| mNetworkForNetId.remove(nai.network.netId); |
| } |
| mNetIdManager.releaseNetId(nai.network.netId); |
| // Just in case. |
| mLegacyTypeTracker.remove(nai, wasDefault); |
| } |
| } |
| } |
| } |
| |
| // This is a no-op if it's called with a message designating a network that has |
| // already been destroyed, because its reference will not be found in the relevant |
| // maps. |
| private void handleAsyncChannelDisconnected(Message msg) { |
| NetworkAgentInfo nai = mNetworkAgentInfos.get(msg.replyTo); |
| if (nai != null) { |
| disconnectAndDestroyNetwork(nai); |
| } else { |
| NetworkProviderInfo npi = mNetworkProviderInfos.remove(msg.replyTo); |
| if (DBG && npi != null) log("unregisterNetworkFactory for " + npi.name); |
| } |
| } |
| |
| // Destroys a network, remove references to it from the internal state managed by |
| // ConnectivityService, free its interfaces and clean up. |
| // Must be called on the Handler thread. |
| private void disconnectAndDestroyNetwork(NetworkAgentInfo nai) { |
| ensureRunningOnConnectivityServiceThread(); |
| if (DBG) { |
| log(nai.toShortString() + " disconnected, was satisfying " + nai.numNetworkRequests()); |
| } |
| // Clear all notifications of this network. |
| mNotifier.clearNotification(nai.network.netId); |
| // A network agent has disconnected. |
| // 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); |
| } |
| final boolean wasDefault = isDefaultNetwork(nai); |
| if (wasDefault) { |
| mDefaultInetConditionPublished = 0; |
| // Log default network disconnection before required book-keeping. |
| // Let rematchAllNetworksAndRequests() below record a new default network event |
| // if there is a fallback. Taken together, the two form a X -> 0, 0 -> Y sequence |
| // whose timestamps tell how long it takes to recover a default network. |
| long now = SystemClock.elapsedRealtime(); |
| mDeps.getMetricsLogger().defaultNetworkMetrics().logDefaultNetworkEvent(now, null, nai); |
| } |
| notifyIfacesChangedForNetworkStats(); |
| // TODO - we shouldn't send CALLBACK_LOST to requests that can be satisfied |
| // by other networks that are already connected. Perhaps that can be done by |
| // sending all CALLBACK_LOST messages (for requests, not listens) at the end |
| // of rematchAllNetworksAndRequests |
| notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST); |
| mKeepaliveTracker.handleStopAllKeepalives(nai, SocketKeepalive.ERROR_INVALID_NETWORK); |
| for (String iface : nai.linkProperties.getAllInterfaceNames()) { |
| // Disable wakeup packet monitoring for each interface. |
| wakeupModifyInterface(iface, nai.networkCapabilities, false); |
| } |
| nai.networkMonitor().notifyNetworkDisconnected(); |
| mNetworkAgentInfos.remove(nai.messenger); |
| nai.clatd.update(); |
| synchronized (mNetworkForNetId) { |
| // Remove the NetworkAgent, but don't mark the netId as |
| // available until we've told netd to delete it below. |
| mNetworkForNetId.remove(nai.network.netId); |
| } |
| // Remove all previously satisfied requests. |
| for (int i = 0; i < nai.numNetworkRequests(); i++) { |
| NetworkRequest request = nai.requestAt(i); |
| final NetworkRequestInfo nri = mNetworkRequests.get(request); |
| ensureRunningOnConnectivityServiceThread(); |
| final NetworkAgentInfo currentNetwork = nri.mSatisfier; |
| if (currentNetwork != null && currentNetwork.network.netId == nai.network.netId) { |
| nri.mSatisfier = null; |
| sendUpdatedScoreToFactories(request, null); |
| } |
| } |
| nai.clearLingerState(); |
| if (nai.isSatisfyingRequest(mDefaultRequest.requestId)) { |
| mDefaultNetworkNai = null; |
| updateDataActivityTracking(null /* newNetwork */, nai); |
| notifyLockdownVpn(nai); |
| ensureNetworkTransitionWakelock(nai.toShortString()); |
| } |
| mLegacyTypeTracker.remove(nai, wasDefault); |
| if (!nai.networkCapabilities.hasTransport(TRANSPORT_VPN)) { |
| updateAllVpnsCapabilities(); |
| } |
| rematchAllNetworksAndRequests(); |
| mLingerMonitor.noteDisconnect(nai); |
| if (nai.created) { |
| // Tell netd to clean up the configuration for this network |
| // (routing rules, DNS, etc). |
| // This may be slow as it requires a lot of netd shelling out to ip and |
| // ip[6]tables to flush routes and remove the incoming packet mark rule, so do it |
| // after we've rematched networks with requests which should make a potential |
| // fallback network the default or requested a new network from the |
| // NetworkProviders, so network traffic isn't interrupted for an unnecessarily |
| // long time. |
| destroyNativeNetwork(nai); |
| mDnsManager.removeNetwork(nai.network); |
| } |
| mNetIdManager.releaseNetId(nai.network.netId); |
| } |
| |
| private boolean createNativeNetwork(@NonNull NetworkAgentInfo networkAgent) { |
| try { |
| // This should never fail. Specifying an already in use NetID will cause failure. |
| if (networkAgent.isVPN()) { |
| mNetd.networkCreateVpn(networkAgent.network.netId, |
| (networkAgent.networkAgentConfig == null |
| || !networkAgent.networkAgentConfig.allowBypass)); |
| } else { |
| mNetd.networkCreatePhysical(networkAgent.network.netId, |
| getNetworkPermission(networkAgent.networkCapabilities)); |
| } |
| mDnsResolver.createNetworkCache(networkAgent.network.netId); |
| return true; |
| } catch (RemoteException | ServiceSpecificException e) { |
| loge("Error creating network " + networkAgent.network.netId + ": " |
| + e.getMessage()); |
| return false; |
| } |
| } |
| |
| private void destroyNativeNetwork(@NonNull NetworkAgentInfo networkAgent) { |
| try { |
| mNetd.networkDestroy(networkAgent.network.netId); |
| mDnsResolver.destroyNetworkCache(networkAgent.network.netId); |
| } catch (RemoteException | ServiceSpecificException e) { |
| loge("Exception destroying network: " + e); |
| } |
| } |
| |
| // If this method proves to be too slow then we can maintain a separate |
| // pendingIntent => NetworkRequestInfo map. |
| // This method assumes that every non-null PendingIntent maps to exactly 1 NetworkRequestInfo. |
| private NetworkRequestInfo findExistingNetworkRequestInfo(PendingIntent pendingIntent) { |
| Intent intent = pendingIntent.getIntent(); |
| for (Map.Entry<NetworkRequest, NetworkRequestInfo> entry : mNetworkRequests.entrySet()) { |
| PendingIntent existingPendingIntent = entry.getValue().mPendingIntent; |
| if (existingPendingIntent != null && |
| existingPendingIntent.getIntent().filterEquals(intent)) { |
| return entry.getValue(); |
| } |
| } |
| return null; |
| } |
| |
| private void handleRegisterNetworkRequestWithIntent(Message msg) { |
| final NetworkRequestInfo nri = (NetworkRequestInfo) (msg.obj); |
| |
| NetworkRequestInfo existingRequest = findExistingNetworkRequestInfo(nri.mPendingIntent); |
| if (existingRequest != null) { // remove the existing request. |
| if (DBG) log("Replacing " + existingRequest.request + " with " |
| + nri.request + " because their intents matched."); |
| handleReleaseNetworkRequest(existingRequest.request, getCallingUid(), |
| /* callOnUnavailable */ false); |
| } |
| handleRegisterNetworkRequest(nri); |
| } |
| |
| private void handleRegisterNetworkRequest(NetworkRequestInfo nri) { |
| ensureRunningOnConnectivityServiceThread(); |
| mNetworkRequests.put(nri.request, nri); |
| mNetworkRequestInfoLogs.log("REGISTER " + nri); |
| if (nri.request.isListen()) { |
| for (NetworkAgentInfo network : mNetworkAgentInfos.values()) { |
| if (nri.request.networkCapabilities.hasSignalStrength() && |
| network.satisfiesImmutableCapabilitiesOf(nri.request)) { |
| updateSignalStrengthThresholds(network, "REGISTER", nri.request); |
| } |
| } |
| } |
| rematchAllNetworksAndRequests(); |
| if (nri.request.isRequest() && nri.mSatisfier == null) { |
| sendUpdatedScoreToFactories(nri.request, null); |
| } |
| } |
| |
| private void handleReleaseNetworkRequestWithIntent(PendingIntent pendingIntent, |
| int callingUid) { |
| NetworkRequestInfo nri = findExistingNetworkRequestInfo(pendingIntent); |
| if (nri != null) { |
| handleReleaseNetworkRequest(nri.request, callingUid, /* callOnUnavailable */ false); |
| } |
| } |
| |
| // Determines whether the network is the best (or could become the best, if it validated), for |
| // none of a particular type of NetworkRequests. The type of NetworkRequests considered depends |
| // on the value of reason: |
| // |
| // - UnneededFor.TEARDOWN: non-listen NetworkRequests. If a network is unneeded for this reason, |
| // then it should be torn down. |
| // - UnneededFor.LINGER: foreground NetworkRequests. If a network is unneeded for this reason, |
| // then it should be lingered. |
| private boolean unneeded(NetworkAgentInfo nai, UnneededFor reason) { |
| ensureRunningOnConnectivityServiceThread(); |
| final int numRequests; |
| switch (reason) { |
| case TEARDOWN: |
| numRequests = nai.numRequestNetworkRequests(); |
| break; |
| case LINGER: |
| numRequests = nai.numForegroundNetworkRequests(); |
| break; |
| default: |
| Slog.wtf(TAG, "Invalid reason. Cannot happen."); |
| return true; |
| } |
| |
| if (!nai.everConnected || nai.isVPN() || nai.isLingering() || numRequests > 0) { |
| return false; |
| } |
| for (NetworkRequestInfo nri : mNetworkRequests.values()) { |
| if (reason == UnneededFor.LINGER && nri.request.isBackgroundRequest()) { |
| // Background requests don't affect lingering. |
| continue; |
| } |
| |
| // If this Network is already the highest scoring Network for a request, or if |
| // there is hope for it to become one if it validated, then it is needed. |
| ensureRunningOnConnectivityServiceThread(); |
| if (nri.request.isRequest() && nai.satisfies(nri.request) && |
| (nai.isSatisfyingRequest(nri.request.requestId) || |
| // Note that this catches two important cases: |
| // 1. Unvalidated cellular will not be reaped when unvalidated WiFi |
| // is currently satisfying the request. This is desirable when |
| // cellular ends up validating but WiFi does not. |
| // 2. Unvalidated WiFi will not be reaped when validated cellular |
| // is currently satisfying the request. This is desirable when |
| // WiFi ends up validating and out scoring cellular. |
| nri.mSatisfier.getCurrentScore() |
| < nai.getCurrentScoreAsValidated())) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private NetworkRequestInfo getNriForAppRequest( |
| NetworkRequest request, int callingUid, String requestedOperation) { |
| final NetworkRequestInfo nri = mNetworkRequests.get(request); |
| |
| if (nri != null) { |
| if (Process.SYSTEM_UID != callingUid && Process.NETWORK_STACK_UID != callingUid |
| && nri.mUid != callingUid) { |
| log(String.format("UID %d attempted to %s for unowned request %s", |
| callingUid, requestedOperation, nri)); |
| return null; |
| } |
| } |
| |
| return nri; |
| } |
| |
| private void handleTimedOutNetworkRequest(final NetworkRequestInfo nri) { |
| ensureRunningOnConnectivityServiceThread(); |
| if (mNetworkRequests.get(nri.request) == null) { |
| return; |
| } |
| ensureRunningOnConnectivityServiceThread(); |
| if (nri.mSatisfier != null) { |
| return; |
| } |
| if (VDBG || (DBG && nri.request.isRequest())) { |
| log("releasing " + nri.request + " (timeout)"); |
| } |
| handleRemoveNetworkRequest(nri); |
| callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_UNAVAIL, 0); |
| } |
| |
| private void handleReleaseNetworkRequest(NetworkRequest request, int callingUid, |
| boolean callOnUnavailable) { |
| final NetworkRequestInfo nri = |
| getNriForAppRequest(request, callingUid, "release NetworkRequest"); |
| if (nri == null) { |
| return; |
| } |
| if (VDBG || (DBG && nri.request.isRequest())) { |
| log("releasing " + nri.request + " (release request)"); |
| } |
| handleRemoveNetworkRequest(nri); |
| if (callOnUnavailable) { |
| callCallbackForRequest(nri, null, ConnectivityManager.CALLBACK_UNAVAIL, 0); |
| } |
| } |
| |
| private void handleRemoveNetworkRequest(final NetworkRequestInfo nri) { |
| ensureRunningOnConnectivityServiceThread(); |
| |
| nri.unlinkDeathRecipient(); |
| mNetworkRequests.remove(nri.request); |
| |
| decrementNetworkRequestPerUidCount(nri); |
| |
| mNetworkRequestInfoLogs.log("RELEASE " + nri); |
| if (nri.request.isRequest()) { |
| boolean wasKept = false; |
| ensureRunningOnConnectivityServiceThread(); |
| final NetworkAgentInfo nai = nri.mSatisfier; |
| if (nai != null) { |
| boolean wasBackgroundNetwork = nai.isBackgroundNetwork(); |
| nai.removeRequest(nri.request.requestId); |
| if (VDBG || DDBG) { |
| log(" Removing from current network " + nai.toShortString() |
| + ", leaving " + nai.numNetworkRequests() + " requests."); |
| } |
| // If there are still lingered requests on this network, don't tear it down, |
| // but resume lingering instead. |
| final long now = SystemClock.elapsedRealtime(); |
| if (updateLingerState(nai, now)) { |
| notifyNetworkLosing(nai, now); |
| } |
| if (unneeded(nai, UnneededFor.TEARDOWN)) { |
| if (DBG) log("no live requests for " + nai.toShortString() + "; disconnecting"); |
| teardownUnneededNetwork(nai); |
| } else { |
| wasKept = true; |
| } |
| nri.mSatisfier = null; |
| if (!wasBackgroundNetwork && nai.isBackgroundNetwork()) { |
| // Went from foreground to background. |
| updateCapabilities(nai.getCurrentScore(), nai, nai.networkCapabilities); |
| } |
| } |
| |
| // Maintain the illusion. When this request arrived, we might have pretended |
| // that a network connected to serve it, even though the network was already |
| // connected. Now that this request has gone away, we might have to pretend |
| // that the network disconnected. LegacyTypeTracker will generate that |
| // phantom disconnect for this type. |
| if (nri.request.legacyType != TYPE_NONE && nai != null) { |
| boolean doRemove = true; |
| if (wasKept) { |
| // check if any of the remaining requests for this network are for the |
| // same legacy type - if so, don't remove the nai |
| for (int i = 0; i < nai.numNetworkRequests(); i++) { |
| NetworkRequest otherRequest = nai.requestAt(i); |
| if (otherRequest.legacyType == nri.request.legacyType && |
| otherRequest.isRequest()) { |
| if (DBG) log(" still have other legacy request - leaving"); |
| doRemove = false; |
| } |
| } |
| } |
| |
| if (doRemove) { |
| mLegacyTypeTracker.remove(nri.request.legacyType, nai, false); |
| } |
| } |
| |
| for (NetworkProviderInfo npi : mNetworkProviderInfos.values()) { |
| npi.cancelRequest(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.removeRequest(nri.request.requestId); |
| if (nri.request.networkCapabilities.hasSignalStrength() && |
| nai.satisfiesImmutableCapabilitiesOf(nri.request)) { |
| updateSignalStrengthThresholds(nai, "RELEASE", nri.request); |
| } |
| } |
| } |
| } |
| |
| private void decrementNetworkRequestPerUidCount(final NetworkRequestInfo nri) { |
| synchronized (mUidToNetworkRequestCount) { |
| final int requests = mUidToNetworkRequestCount.get(nri.mUid, 0); |
| if (requests < 1) { |
| Slog.wtf(TAG, "BUG: too small request count " + requests + " for UID " + nri.mUid); |
| } else if (requests == 1) { |
| mUidToNetworkRequestCount.removeAt(mUidToNetworkRequestCount.indexOfKey(nri.mUid)); |
| } else { |
| mUidToNetworkRequestCount.put(nri.mUid, requests - 1); |
| } |
| } |
| } |
| |
| @Override |
| public void setAcceptUnvalidated(Network network, boolean accept, boolean always) { |
| enforceNetworkStackSettingsOrSetup(); |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_UNVALIDATED, |
| encodeBool(accept), encodeBool(always), network)); |
| } |
| |
| @Override |
| public void setAcceptPartialConnectivity(Network network, boolean accept, boolean always) { |
| enforceNetworkStackSettingsOrSetup(); |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_ACCEPT_PARTIAL_CONNECTIVITY, |
| encodeBool(accept), encodeBool(always), network)); |
| } |
| |
| @Override |
| public void setAvoidUnvalidated(Network network) { |
| enforceNetworkStackSettingsOrSetup(); |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_SET_AVOID_UNVALIDATED, network)); |
| } |
| |
| private void handleSetAcceptUnvalidated(Network network, boolean accept, boolean always) { |
| if (DBG) log("handleSetAcceptUnvalidated network=" + network + |
| " accept=" + accept + " always=" + always); |
| |
| NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai == null) { |
| // Nothing to do. |
| return; |
| } |
| |
| if (nai.everValidated) { |
| // The network validated while the dialog box was up. Take no action. |
| return; |
| } |
| |
| if (!nai.networkAgentConfig.explicitlySelected) { |
| Slog.wtf(TAG, "BUG: setAcceptUnvalidated non non-explicitly selected network"); |
| } |
| |
| if (accept != nai.networkAgentConfig.acceptUnvalidated) { |
| nai.networkAgentConfig.acceptUnvalidated = accept; |
| // If network becomes partial connectivity and user already accepted to use this |
| // network, we should respect the user's option and don't need to popup the |
| // PARTIAL_CONNECTIVITY notification to user again. |
| nai.networkAgentConfig.acceptPartialConnectivity = accept; |
| rematchAllNetworksAndRequests(); |
| sendUpdatedScoreToFactories(nai); |
| } |
| |
| if (always) { |
| nai.asyncChannel.sendMessage( |
| NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, encodeBool(accept)); |
| } |
| |
| if (!accept) { |
| // Tell the NetworkAgent to not automatically reconnect to the network. |
| nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); |
| // Teardown the network. |
| teardownUnneededNetwork(nai); |
| } |
| |
| } |
| |
| private void handleSetAcceptPartialConnectivity(Network network, boolean accept, |
| boolean always) { |
| if (DBG) { |
| log("handleSetAcceptPartialConnectivity network=" + network + " accept=" + accept |
| + " always=" + always); |
| } |
| |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai == null) { |
| // Nothing to do. |
| return; |
| } |
| |
| if (nai.lastValidated) { |
| // The network validated while the dialog box was up. Take no action. |
| return; |
| } |
| |
| if (accept != nai.networkAgentConfig.acceptPartialConnectivity) { |
| nai.networkAgentConfig.acceptPartialConnectivity = accept; |
| } |
| |
| // TODO: Use the current design or save the user choice into IpMemoryStore. |
| if (always) { |
| nai.asyncChannel.sendMessage( |
| NetworkAgent.CMD_SAVE_ACCEPT_UNVALIDATED, encodeBool(accept)); |
| } |
| |
| if (!accept) { |
| // Tell the NetworkAgent to not automatically reconnect to the network. |
| nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); |
| // Tear down the network. |
| teardownUnneededNetwork(nai); |
| } else { |
| // Inform NetworkMonitor that partial connectivity is acceptable. This will likely |
| // result in a partial connectivity result which will be processed by |
| // maybeHandleNetworkMonitorMessage. |
| // |
| // TODO: NetworkMonitor does not refer to the "never ask again" bit. The bit is stored |
| // per network. Therefore, NetworkMonitor may still do https probe. |
| nai.networkMonitor().setAcceptPartialConnectivity(); |
| } |
| } |
| |
| private void handleSetAvoidUnvalidated(Network network) { |
| NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai == null || nai.lastValidated) { |
| // Nothing to do. The network either disconnected or revalidated. |
| return; |
| } |
| if (!nai.avoidUnvalidated) { |
| nai.avoidUnvalidated = true; |
| rematchAllNetworksAndRequests(); |
| sendUpdatedScoreToFactories(nai); |
| } |
| } |
| |
| private void scheduleUnvalidatedPrompt(NetworkAgentInfo nai) { |
| if (VDBG) log("scheduleUnvalidatedPrompt " + nai.network); |
| mHandler.sendMessageDelayed( |
| mHandler.obtainMessage(EVENT_PROMPT_UNVALIDATED, nai.network), |
| PROMPT_UNVALIDATED_DELAY_MS); |
| } |
| |
| @Override |
| public void startCaptivePortalApp(Network network) { |
| enforceNetworkStackOrSettingsPermission(); |
| mHandler.post(() -> { |
| NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai == null) return; |
| if (!nai.networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL)) return; |
| nai.networkMonitor().launchCaptivePortalApp(); |
| }); |
| } |
| |
| /** |
| * NetworkStack endpoint to start the captive portal app. The NetworkStack needs to use this |
| * endpoint as it does not have INTERACT_ACROSS_USERS_FULL itself. |
| * @param network Network on which the captive portal was detected. |
| * @param appExtras Bundle to use as intent extras for the captive portal application. |
| * Must be treated as opaque to avoid preventing the captive portal app to |
| * update its arguments. |
| */ |
| @Override |
| public void startCaptivePortalAppInternal(Network network, Bundle appExtras) { |
| mContext.enforceCallingOrSelfPermission(NetworkStack.PERMISSION_MAINLINE_NETWORK_STACK, |
| "ConnectivityService"); |
| |
| final Intent appIntent = new Intent(ConnectivityManager.ACTION_CAPTIVE_PORTAL_SIGN_IN); |
| appIntent.putExtras(appExtras); |
| appIntent.putExtra(ConnectivityManager.EXTRA_CAPTIVE_PORTAL, |
| new CaptivePortal(new CaptivePortalImpl(network).asBinder())); |
| appIntent.setFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT | Intent.FLAG_ACTIVITY_NEW_TASK); |
| |
| // This runs on a random binder thread, but getNetworkAgentInfoForNetwork is thread-safe, |
| // and captivePortalValidationPending is volatile. |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai != null) { |
| nai.captivePortalValidationPending = true; |
| } |
| Binder.withCleanCallingIdentity(() -> |
| mContext.startActivityAsUser(appIntent, UserHandle.CURRENT)); |
| } |
| |
| private class CaptivePortalImpl extends ICaptivePortal.Stub { |
| private final Network mNetwork; |
| |
| private CaptivePortalImpl(Network network) { |
| mNetwork = network; |
| } |
| |
| @Override |
| public void appResponse(final int response) { |
| if (response == CaptivePortal.APP_RETURN_WANTED_AS_IS) { |
| enforceSettingsPermission(); |
| } |
| |
| final NetworkMonitorManager nm = getNetworkMonitorManager(mNetwork); |
| if (nm == null) return; |
| nm.notifyCaptivePortalAppFinished(response); |
| } |
| |
| @Override |
| public void appRequest(final int request) { |
| final NetworkMonitorManager nm = getNetworkMonitorManager(mNetwork); |
| if (nm == null) return; |
| |
| if (request == CaptivePortal.APP_REQUEST_REEVALUATION_REQUIRED) { |
| nm.forceReevaluation(Binder.getCallingUid()); |
| } |
| } |
| |
| @Nullable |
| private NetworkMonitorManager getNetworkMonitorManager(final Network network) { |
| // getNetworkAgentInfoForNetwork is thread-safe |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai == null) return null; |
| |
| // nai.networkMonitor() is thread-safe |
| return nai.networkMonitor(); |
| } |
| |
| @Override |
| public void logEvent(int eventId, String packageName) { |
| enforceSettingsPermission(); |
| |
| new MetricsLogger().action(eventId, packageName); |
| } |
| } |
| |
| public boolean avoidBadWifi() { |
| return mMultinetworkPolicyTracker.getAvoidBadWifi(); |
| } |
| |
| /** |
| * Return whether the device should maintain continuous, working connectivity by switching away |
| * from WiFi networks having no connectivity. |
| * @see MultinetworkPolicyTracker#getAvoidBadWifi() |
| */ |
| public boolean shouldAvoidBadWifi() { |
| if (!checkNetworkStackPermission()) { |
| throw new SecurityException("avoidBadWifi requires NETWORK_STACK permission"); |
| } |
| return avoidBadWifi(); |
| } |
| |
| |
| private void rematchForAvoidBadWifiUpdate() { |
| rematchAllNetworksAndRequests(); |
| for (NetworkAgentInfo nai: mNetworkAgentInfos.values()) { |
| if (nai.networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) { |
| sendUpdatedScoreToFactories(nai); |
| } |
| } |
| } |
| |
| // TODO: Evaluate whether this is of interest to other consumers of |
| // MultinetworkPolicyTracker and worth moving out of here. |
| private void dumpAvoidBadWifiSettings(IndentingPrintWriter pw) { |
| final boolean configRestrict = mMultinetworkPolicyTracker.configRestrictsAvoidBadWifi(); |
| if (!configRestrict) { |
| pw.println("Bad Wi-Fi avoidance: unrestricted"); |
| return; |
| } |
| |
| pw.println("Bad Wi-Fi avoidance: " + avoidBadWifi()); |
| pw.increaseIndent(); |
| pw.println("Config restrict: " + configRestrict); |
| |
| final String value = mMultinetworkPolicyTracker.getAvoidBadWifiSetting(); |
| String description; |
| // Can't use a switch statement because strings are legal case labels, but null is not. |
| if ("0".equals(value)) { |
| description = "get stuck"; |
| } else if (value == null) { |
| description = "prompt"; |
| } else if ("1".equals(value)) { |
| description = "avoid"; |
| } else { |
| description = value + " (?)"; |
| } |
| pw.println("User setting: " + description); |
| pw.println("Network overrides:"); |
| pw.increaseIndent(); |
| for (NetworkAgentInfo nai : networksSortedById()) { |
| if (nai.avoidUnvalidated) { |
| pw.println(nai.toShortString()); |
| } |
| } |
| pw.decreaseIndent(); |
| pw.decreaseIndent(); |
| } |
| |
| private void showNetworkNotification(NetworkAgentInfo nai, NotificationType type) { |
| final String action; |
| final boolean highPriority; |
| switch (type) { |
| case LOGGED_IN: |
| action = Settings.ACTION_WIFI_SETTINGS; |
| mHandler.removeMessages(EVENT_TIMEOUT_NOTIFICATION); |
| mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NOTIFICATION, |
| nai.network.netId, 0), TIMEOUT_NOTIFICATION_DELAY_MS); |
| // High priority because it is a direct result of the user logging in to a portal. |
| highPriority = true; |
| break; |
| case NO_INTERNET: |
| action = ConnectivityManager.ACTION_PROMPT_UNVALIDATED; |
| // High priority because it is only displayed for explicitly selected networks. |
| highPriority = true; |
| break; |
| case PRIVATE_DNS_BROKEN: |
| action = Settings.ACTION_WIRELESS_SETTINGS; |
| // High priority because we should let user know why there is no internet. |
| highPriority = true; |
| break; |
| case LOST_INTERNET: |
| action = ConnectivityManager.ACTION_PROMPT_LOST_VALIDATION; |
| // High priority because it could help the user avoid unexpected data usage. |
| highPriority = true; |
| break; |
| case PARTIAL_CONNECTIVITY: |
| action = ConnectivityManager.ACTION_PROMPT_PARTIAL_CONNECTIVITY; |
| // Don't bother the user with a high-priority notification if the network was not |
| // explicitly selected by the user. |
| highPriority = nai.networkAgentConfig.explicitlySelected; |
| break; |
| default: |
| Slog.wtf(TAG, "Unknown notification type " + type); |
| return; |
| } |
| |
| Intent intent = new Intent(action); |
| if (type != NotificationType.LOGGED_IN && type != NotificationType.PRIVATE_DNS_BROKEN) { |
| intent.setData(Uri.fromParts("netId", Integer.toString(nai.network.netId), null)); |
| intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); |
| intent.setClassName("com.android.settings", |
| "com.android.settings.wifi.WifiNoInternetDialog"); |
| } |
| |
| PendingIntent pendingIntent = PendingIntent.getActivityAsUser( |
| mContext, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT, null, UserHandle.CURRENT); |
| |
| mNotifier.showNotification(nai.network.netId, type, nai, null, pendingIntent, highPriority); |
| } |
| |
| private boolean shouldPromptUnvalidated(NetworkAgentInfo nai) { |
| // Don't prompt if the network is validated, and don't prompt on captive portals |
| // because we're already prompting the user to sign in. |
| if (nai.everValidated || nai.everCaptivePortalDetected) { |
| return false; |
| } |
| |
| // If a network has partial connectivity, always prompt unless the user has already accepted |
| // partial connectivity and selected don't ask again. This ensures that if the device |
| // automatically connects to a network that has partial Internet access, the user will |
| // always be able to use it, either because they've already chosen "don't ask again" or |
| // because we have prompt them. |
| if (nai.partialConnectivity && !nai.networkAgentConfig.acceptPartialConnectivity) { |
| return true; |
| } |
| |
| // If a network has no Internet access, only prompt if the network was explicitly selected |
| // and if the user has not already told us to use the network regardless of whether it |
| // validated or not. |
| if (nai.networkAgentConfig.explicitlySelected |
| && !nai.networkAgentConfig.acceptUnvalidated) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| private void handlePromptUnvalidated(Network network) { |
| if (VDBG || DDBG) log("handlePromptUnvalidated " + network); |
| NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| |
| if (nai == null || !shouldPromptUnvalidated(nai)) { |
| return; |
| } |
| |
| // Stop automatically reconnecting to this network in the future. Automatically connecting |
| // to a network that provides no or limited connectivity is not useful, because the user |
| // cannot use that network except through the notification shown by this method, and the |
| // notification is only shown if the network is explicitly selected by the user. |
| nai.asyncChannel.sendMessage(NetworkAgent.CMD_PREVENT_AUTOMATIC_RECONNECT); |
| |
| // TODO: Evaluate if it's needed to wait 8 seconds for triggering notification when |
| // NetworkMonitor detects the network is partial connectivity. Need to change the design to |
| // popup the notification immediately when the network is partial connectivity. |
| if (nai.partialConnectivity) { |
| showNetworkNotification(nai, NotificationType.PARTIAL_CONNECTIVITY); |
| } else { |
| showNetworkNotification(nai, NotificationType.NO_INTERNET); |
| } |
| } |
| |
| private void handleNetworkUnvalidated(NetworkAgentInfo nai) { |
| NetworkCapabilities nc = nai.networkCapabilities; |
| if (DBG) log("handleNetworkUnvalidated " + nai.toShortString() + " cap=" + nc); |
| |
| if (!nc.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) { |
| return; |
| } |
| |
| if (mMultinetworkPolicyTracker.shouldNotifyWifiUnvalidated()) { |
| showNetworkNotification(nai, NotificationType.LOST_INTERNET); |
| } |
| } |
| |
| @Override |
| public int getMultipathPreference(Network network) { |
| enforceAccessPermission(); |
| |
| NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai != null && nai.networkCapabilities |
| .hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED)) { |
| return ConnectivityManager.MULTIPATH_PREFERENCE_UNMETERED; |
| } |
| |
| Integer networkPreference = mMultipathPolicyTracker.getMultipathPreference(network); |
| if (networkPreference != null) { |
| return networkPreference; |
| } |
| |
| return mMultinetworkPolicyTracker.getMeteredMultipathPreference(); |
| } |
| |
| @Override |
| public NetworkRequest getDefaultRequest() { |
| return mDefaultRequest; |
| } |
| |
| private class InternalHandler extends Handler { |
| public InternalHandler(Looper looper) { |
| super(looper); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case EVENT_EXPIRE_NET_TRANSITION_WAKELOCK: |
| case EVENT_CLEAR_NET_TRANSITION_WAKELOCK: { |
| handleReleaseNetworkTransitionWakelock(msg.what); |
| break; |
| } |
| case EVENT_APPLY_GLOBAL_HTTP_PROXY: { |
| mProxyTracker.loadDeprecatedGlobalHttpProxy(); |
| break; |
| } |
| case EVENT_PROXY_HAS_CHANGED: { |
| handleApplyDefaultProxy((ProxyInfo)msg.obj); |
| break; |
| } |
| case EVENT_REGISTER_NETWORK_PROVIDER: { |
| handleRegisterNetworkProvider((NetworkProviderInfo) msg.obj); |
| break; |
| } |
| case EVENT_UNREGISTER_NETWORK_PROVIDER: { |
| handleUnregisterNetworkProvider((Messenger) msg.obj); |
| break; |
| } |
| case EVENT_REGISTER_NETWORK_AGENT: { |
| final Pair<NetworkAgentInfo, INetworkMonitor> arg = |
| (Pair<NetworkAgentInfo, INetworkMonitor>) msg.obj; |
| handleRegisterNetworkAgent(arg.first, arg.second); |
| break; |
| } |
| case EVENT_REGISTER_NETWORK_REQUEST: |
| case EVENT_REGISTER_NETWORK_LISTENER: { |
| handleRegisterNetworkRequest((NetworkRequestInfo) msg.obj); |
| break; |
| } |
| case EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT: |
| case EVENT_REGISTER_NETWORK_LISTENER_WITH_INTENT: { |
| handleRegisterNetworkRequestWithIntent(msg); |
| break; |
| } |
| case EVENT_TIMEOUT_NETWORK_REQUEST: { |
| NetworkRequestInfo nri = (NetworkRequestInfo) msg.obj; |
| handleTimedOutNetworkRequest(nri); |
| break; |
| } |
| case EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT: { |
| handleReleaseNetworkRequestWithIntent((PendingIntent) msg.obj, msg.arg1); |
| break; |
| } |
| case EVENT_RELEASE_NETWORK_REQUEST: { |
| handleReleaseNetworkRequest((NetworkRequest) msg.obj, msg.arg1, |
| /* callOnUnavailable */ false); |
| break; |
| } |
| case EVENT_SET_ACCEPT_UNVALIDATED: { |
| Network network = (Network) msg.obj; |
| handleSetAcceptUnvalidated(network, toBool(msg.arg1), toBool(msg.arg2)); |
| break; |
| } |
| case EVENT_SET_ACCEPT_PARTIAL_CONNECTIVITY: { |
| Network network = (Network) msg.obj; |
| handleSetAcceptPartialConnectivity(network, toBool(msg.arg1), |
| toBool(msg.arg2)); |
| break; |
| } |
| case EVENT_SET_AVOID_UNVALIDATED: { |
| handleSetAvoidUnvalidated((Network) msg.obj); |
| break; |
| } |
| case EVENT_PROMPT_UNVALIDATED: { |
| handlePromptUnvalidated((Network) msg.obj); |
| break; |
| } |
| case EVENT_CONFIGURE_ALWAYS_ON_NETWORKS: { |
| handleConfigureAlwaysOnNetworks(); |
| break; |
| } |
| // Sent by KeepaliveTracker to process an app request on the state machine thread. |
| case NetworkAgent.CMD_START_SOCKET_KEEPALIVE: { |
| mKeepaliveTracker.handleStartKeepalive(msg); |
| break; |
| } |
| // Sent by KeepaliveTracker to process an app request on the state machine thread. |
| case NetworkAgent.CMD_STOP_SOCKET_KEEPALIVE: { |
| NetworkAgentInfo nai = getNetworkAgentInfoForNetwork((Network) msg.obj); |
| int slot = msg.arg1; |
| int reason = msg.arg2; |
| mKeepaliveTracker.handleStopKeepalive(nai, slot, reason); |
| break; |
| } |
| case EVENT_SYSTEM_READY: { |
| mMultipathPolicyTracker.start(); |
| break; |
| } |
| case EVENT_REVALIDATE_NETWORK: { |
| handleReportNetworkConnectivity((Network) msg.obj, msg.arg1, toBool(msg.arg2)); |
| break; |
| } |
| case EVENT_PRIVATE_DNS_SETTINGS_CHANGED: |
| handlePrivateDnsSettingsChanged(); |
| break; |
| case EVENT_PRIVATE_DNS_VALIDATION_UPDATE: |
| handlePrivateDnsValidationUpdate( |
| (PrivateDnsValidationUpdate) msg.obj); |
| break; |
| case EVENT_UID_RULES_CHANGED: |
| handleUidRulesChanged(msg.arg1, msg.arg2); |
| break; |
| case EVENT_DATA_SAVER_CHANGED: |
| handleRestrictBackgroundChanged(toBool(msg.arg1)); |
| break; |
| case EVENT_TIMEOUT_NOTIFICATION: |
| mNotifier.clearNotification(msg.arg1, NotificationType.LOGGED_IN); |
| break; |
| } |
| } |
| } |
| |
| @Override |
| @Deprecated |
| public int getLastTetherError(String iface) { |
| final TetheringManager tm = (TetheringManager) mContext.getSystemService( |
| Context.TETHERING_SERVICE); |
| return tm.getLastTetherError(iface); |
| } |
| |
| @Override |
| @Deprecated |
| public String[] getTetherableIfaces() { |
| final TetheringManager tm = (TetheringManager) mContext.getSystemService( |
| Context.TETHERING_SERVICE); |
| return tm.getTetherableIfaces(); |
| } |
| |
| @Override |
| @Deprecated |
| public String[] getTetheredIfaces() { |
| final TetheringManager tm = (TetheringManager) mContext.getSystemService( |
| Context.TETHERING_SERVICE); |
| return tm.getTetheredIfaces(); |
| } |
| |
| |
| @Override |
| @Deprecated |
| public String[] getTetheringErroredIfaces() { |
| final TetheringManager tm = (TetheringManager) mContext.getSystemService( |
| Context.TETHERING_SERVICE); |
| |
| return tm.getTetheringErroredIfaces(); |
| } |
| |
| @Override |
| @Deprecated |
| public String[] getTetherableUsbRegexs() { |
| final TetheringManager tm = (TetheringManager) mContext.getSystemService( |
| Context.TETHERING_SERVICE); |
| |
| return tm.getTetherableUsbRegexs(); |
| } |
| |
| @Override |
| @Deprecated |
| public String[] getTetherableWifiRegexs() { |
| final TetheringManager tm = (TetheringManager) mContext.getSystemService( |
| Context.TETHERING_SERVICE); |
| return tm.getTetherableWifiRegexs(); |
| } |
| |
| // 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 ensureNetworkTransitionWakelock(String forWhom) { |
| synchronized (this) { |
| if (mNetTransitionWakeLock.isHeld()) { |
| return; |
| } |
| mNetTransitionWakeLock.acquire(); |
| mLastWakeLockAcquireTimestamp = SystemClock.elapsedRealtime(); |
| mTotalWakelockAcquisitions++; |
| } |
| mWakelockLogs.log("ACQUIRE for " + forWhom); |
| Message msg = mHandler.obtainMessage(EVENT_EXPIRE_NET_TRANSITION_WAKELOCK); |
| mHandler.sendMessageDelayed(msg, mNetTransitionWakeLockTimeout); |
| } |
| |
| // Called when we gain a new default network to release the network transition wakelock in a |
| // second, to allow a grace period for apps to reconnect over the new network. Pending expiry |
| // message is cancelled. |
| private void scheduleReleaseNetworkTransitionWakelock() { |
| synchronized (this) { |
| if (!mNetTransitionWakeLock.isHeld()) { |
| return; // expiry message released the lock first. |
| } |
| } |
| // Cancel self timeout on wakelock hold. |
| mHandler.removeMessages(EVENT_EXPIRE_NET_TRANSITION_WAKELOCK); |
| Message msg = mHandler.obtainMessage(EVENT_CLEAR_NET_TRANSITION_WAKELOCK); |
| mHandler.sendMessageDelayed(msg, 1000); |
| } |
| |
| // Called when either message of ensureNetworkTransitionWakelock or |
| // scheduleReleaseNetworkTransitionWakelock is processed. |
| private void handleReleaseNetworkTransitionWakelock(int eventId) { |
| String event = eventName(eventId); |
| synchronized (this) { |
| if (!mNetTransitionWakeLock.isHeld()) { |
| mWakelockLogs.log(String.format("RELEASE: already released (%s)", event)); |
| Slog.w(TAG, "expected Net Transition WakeLock to be held"); |
| return; |
| } |
| mNetTransitionWakeLock.release(); |
| long lockDuration = SystemClock.elapsedRealtime() - mLastWakeLockAcquireTimestamp; |
| mTotalWakelockDurationMs += lockDuration; |
| mMaxWakelockDurationMs = Math.max(mMaxWakelockDurationMs, lockDuration); |
| mTotalWakelockReleases++; |
| } |
| mWakelockLogs.log(String.format("RELEASE (%s)", event)); |
| } |
| |
| // 100 percent is full good, 0 is full bad. |
| @Override |
| public void reportInetCondition(int networkType, int percentage) { |
| NetworkAgentInfo nai = mLegacyTypeTracker.getNetworkForType(networkType); |
| if (nai == null) return; |
| reportNetworkConnectivity(nai.network, percentage > 50); |
| } |
| |
| @Override |
| public void reportNetworkConnectivity(Network network, boolean hasConnectivity) { |
| enforceAccessPermission(); |
| enforceInternetPermission(); |
| final int uid = Binder.getCallingUid(); |
| final int connectivityInfo = encodeBool(hasConnectivity); |
| mHandler.sendMessage( |
| mHandler.obtainMessage(EVENT_REVALIDATE_NETWORK, uid, connectivityInfo, network)); |
| |
| final NetworkAgentInfo nai; |
| if (network == null) { |
| nai = getDefaultNetwork(); |
| } else { |
| nai = getNetworkAgentInfoForNetwork(network); |
| } |
| if (nai != null) { |
| mConnectivityDiagnosticsHandler.sendMessage( |
| mConnectivityDiagnosticsHandler.obtainMessage( |
| ConnectivityDiagnosticsHandler.EVENT_NETWORK_CONNECTIVITY_REPORTED, |
| connectivityInfo, 0, nai)); |
| } |
| } |
| |
| private void handleReportNetworkConnectivity( |
| Network network, int uid, boolean hasConnectivity) { |
| final NetworkAgentInfo nai; |
| if (network == null) { |
| nai = getDefaultNetwork(); |
| } else { |
| nai = getNetworkAgentInfoForNetwork(network); |
| } |
| if (nai == null || nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTING || |
| nai.networkInfo.getState() == NetworkInfo.State.DISCONNECTED) { |
| return; |
| } |
| // Revalidate if the app report does not match our current validated state. |
| if (hasConnectivity == nai.lastValidated) { |
| return; |
| } |
| if (DBG) { |
| int netid = nai.network.netId; |
| log("reportNetworkConnectivity(" + netid + ", " + hasConnectivity + ") by " + uid); |
| } |
| // Validating a network that has not yet connected could result in a call to |
| // rematchNetworkAndRequests() which is not meant to work on such networks. |
| if (!nai.everConnected) { |
| return; |
| } |
| LinkProperties lp = getLinkProperties(nai); |
| if (isNetworkWithLinkPropertiesBlocked(lp, uid, false)) { |
| return; |
| } |
| nai.networkMonitor().forceReevaluation(uid); |
| } |
| |
| /** |
| * Returns information about the proxy a certain network is using. If given a null network, it |
| * it will return the proxy for the bound network for the caller app or the default proxy if |
| * none. |
| * |
| * @param network the network we want to get the proxy information for. |
| * @return Proxy information if a network has a proxy configured, or otherwise null. |
| */ |
| @Override |
| public ProxyInfo getProxyForNetwork(Network network) { |
| final ProxyInfo globalProxy = mProxyTracker.getGlobalProxy(); |
| if (globalProxy != null) return globalProxy; |
| if (network == null) { |
| // Get the network associated with the calling UID. |
| final Network activeNetwork = getActiveNetworkForUidInternal(Binder.getCallingUid(), |
| true); |
| if (activeNetwork == null) { |
| return null; |
| } |
| return getLinkPropertiesProxyInfo(activeNetwork); |
| } else if (mDeps.queryUserAccess(Binder.getCallingUid(), network.netId)) { |
| // Don't call getLinkProperties() as it requires ACCESS_NETWORK_STATE permission, which |
| // caller may not have. |
| return getLinkPropertiesProxyInfo(network); |
| } |
| // No proxy info available if the calling UID does not have network access. |
| return null; |
| } |
| |
| |
| private ProxyInfo getLinkPropertiesProxyInfo(Network network) { |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetwork(network); |
| if (nai == null) return null; |
| synchronized (nai) { |
| final ProxyInfo linkHttpProxy = nai.linkProperties.getHttpProxy(); |
| return linkHttpProxy == null ? null : new ProxyInfo(linkHttpProxy); |
| } |
| } |
| |
| @Override |
| public void setGlobalProxy(final ProxyInfo proxyProperties) { |
| NetworkStack.checkNetworkStackPermission(mContext); |
| mProxyTracker.setGlobalProxy(proxyProperties); |
| } |
| |
| @Override |
| @Nullable |
| public ProxyInfo getGlobalProxy() { |
| return mProxyTracker.getGlobalProxy(); |
| } |
| |
| private void handleApplyDefaultProxy(ProxyInfo proxy) { |
| if (proxy != null && TextUtils.isEmpty(proxy.getHost()) |
| && Uri.EMPTY.equals(proxy.getPacFileUrl())) { |
| proxy = null; |
| } |
| mProxyTracker.setDefaultProxy(proxy); |
| } |
| |
| // If the proxy has changed from oldLp to newLp, resend proxy broadcast. This method gets called |
| // when any network changes proxy. |
| // TODO: Remove usage of broadcast extras as they are deprecated and not applicable in a |
| // multi-network world where an app might be bound to a non-default network. |
| private void updateProxy(LinkProperties newLp, LinkProperties oldLp) { |
| ProxyInfo newProxyInfo = newLp == null ? null : newLp.getHttpProxy(); |
| ProxyInfo oldProxyInfo = oldLp == null ? null : oldLp.getHttpProxy(); |
| |
| if (!ProxyTracker.proxyInfoEqual(newProxyInfo, oldProxyInfo)) { |
| mProxyTracker.sendProxyBroadcast(); |
| } |
| } |
| |
| private static class SettingsObserver extends ContentObserver { |
| final private HashMap<Uri, Integer> mUriEventMap; |
| final private Context mContext; |
| final private Handler mHandler; |
| |
| SettingsObserver(Context context, Handler handler) { |
| super(null); |
| mUriEventMap = new HashMap<>(); |
| mContext = context; |
| mHandler = handler; |
| } |
| |
| void observe(Uri uri, int what) { |
| mUriEventMap.put(uri, what); |
| final ContentResolver resolver = mContext.getContentResolver(); |
| resolver.registerContentObserver(uri, false, this); |
| } |
| |
| @Override |
| public void onChange(boolean selfChange) { |
| Slog.wtf(TAG, "Should never be reached."); |
| } |
| |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| final Integer what = mUriEventMap.get(uri); |
| if (what != null) { |
| mHandler.obtainMessage(what).sendToTarget(); |
| } else { |
| loge("No matching event to send for URI=" + uri); |
| } |
| } |
| } |
| |
| private static void log(String s) { |
| Slog.d(TAG, s); |
| } |
| |
| private static void loge(String s) { |
| Slog.e(TAG, s); |
| } |
| |
| private static void loge(String s, Throwable t) { |
| Slog.e(TAG, s, t); |
| } |
| |
| /** |
| * Prepare for a VPN application. |
| * VPN permissions are checked in the {@link Vpn} class. If the caller is not {@code userId}, |
| * {@link android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. |
| * |
| * @param oldPackage Package name of the application which currently controls VPN, which will |
| * be replaced. If there is no such application, this should should either be |
| * {@code null} or {@link VpnConfig.LEGACY_VPN}. |
| * @param newPackage Package name of the application which should gain control of VPN, or |
| * {@code null} to disable. |
| * @param userId User for whom to prepare the new VPN. |
| * |
| * @hide |
| */ |
| @Override |
| public boolean prepareVpn(@Nullable String oldPackage, @Nullable String newPackage, |
| int userId) { |
| enforceCrossUserPermission(userId); |
| |
| synchronized (mVpns) { |
| throwIfLockdownEnabled(); |
| Vpn vpn = mVpns.get(userId); |
| if (vpn != null) { |
| return vpn.prepare(oldPackage, newPackage, VpnManager.TYPE_VPN_SERVICE); |
| } else { |
| return false; |
| } |
| } |
| } |
| |
| /** |
| * Set whether the VPN package has the ability to launch VPNs without user intervention. This |
| * method is used by system-privileged apps. VPN permissions are checked in the {@link Vpn} |
| * class. If the caller is not {@code userId}, {@link |
| * android.Manifest.permission.INTERACT_ACROSS_USERS_FULL} permission is required. |
| * |
| * @param packageName The package for which authorization state should change. |
| * @param userId User for whom {@code packageName} is installed. |
| * @param authorized {@code true} if this app should be able to start a VPN connection without |
| * explicit user approval, {@code false} if not. |
| * @param vpnType The {@link VpnManager.VpnType} constant representing what class of VPN |
| * permissions should be granted. When unauthorizing an app, {@link |
| * VpnManager.TYPE_VPN_NONE} should be used. |
| * @hide |
| */ |
| @Override |
| public void setVpnPackageAuthorization( |
| String packageName, int userId, @VpnManager.VpnType int vpnType) { |
| enforceCrossUserPermission(userId); |
| |
| synchronized (mVpns) { |
| Vpn vpn = mVpns.get(userId); |
| if (vpn != null) { |
| vpn.setPackageAuthorization(packageName, vpnType); |
| } |
| } |
| } |
| |
| /** |
| * 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) { |
| int user = UserHandle.getUserId(Binder.getCallingUid()); |
| synchronized (mVpns) { |
| throwIfLockdownEnabled(); |
| return mVpns.get(user).establish(config); |
| } |
| } |
| |
| /** |
| * Stores the given VPN profile based on the provisioning package name. |
| * |
| * <p>If there is already a VPN profile stored for the provisioning package, this call will |
| * overwrite the profile. |
| * |
| * <p>This is designed to serve the VpnManager only; settings-based VPN profiles are managed |
| * exclusively by the Settings app, and passed into the platform at startup time. |
| * |
| * @return {@code true} if user consent has already been granted, {@code false} otherwise. |
| * @hide |
| */ |
| @Override |
| public boolean provisionVpnProfile(@NonNull VpnProfile profile, @NonNull String packageName) { |
| final int user = UserHandle.getUserId(Binder.getCallingUid()); |
| synchronized (mVpns) { |
| return mVpns.get(user).provisionVpnProfile(packageName, profile, mKeyStore); |
| } |
| } |
| |
| /** |
| * Deletes the stored VPN profile for the provisioning package |
| * |
| * <p>If there are no profiles for the given package, this method will silently succeed. |
| * |
| * <p>This is designed to serve the VpnManager only; settings-based VPN profiles are managed |
| * exclusively by the Settings app, and passed into the platform at startup time. |
| * |
| * @hide |
| */ |
| @Override |
| public void deleteVpnProfile(@NonNull String packageName) { |
| final int user = UserHandle.getUserId(Binder.getCallingUid()); |
| synchronized (mVpns) { |
| mVpns.get(user).deleteVpnProfile(packageName, mKeyStore); |
| } |
| } |
| |
| /** |
| * Starts the VPN based on the stored profile for the given package |
| * |
| * <p>This is designed to serve the VpnManager only; settings-based VPN profiles are managed |
| * exclusively by the Settings app, and passed into the platform at startup time. |
| * |
| * @throws IllegalArgumentException if no profile was found for the given package name. |
| * @hide |
| */ |
| @Override |
| public void startVpnProfile(@NonNull String packageName) { |
| final int user = UserHandle.getUserId(Binder.getCallingUid()); |
| synchronized (mVpns) { |
| throwIfLockdownEnabled(); |
| mVpns.get(user).startVpnProfile(packageName, mKeyStore); |
| } |
| } |
| |
| /** |
| * Stops the Platform VPN if the provided package is running one. |
| * |
| * <p>This is designed to serve the VpnManager only; settings-based VPN profiles are managed |
| * exclusively by the Settings app, and passed into the platform at startup time. |
| * |
| * @hide |
| */ |
| @Override |
| public void stopVpnProfile(@NonNull String packageName) { |
| final int user = UserHandle.getUserId(Binder.getCallingUid()); |
| synchronized (mVpns) { |
| mVpns.get(user).stopVpnProfile(packageName); |
| } |
| } |
| |
| /** |
| * Start legacy VPN, controlling native daemons as needed. Creates a |
| * secondary thread to perform connection work, returning quickly. |
| */ |
| @Override |
| public void startLegacyVpn(VpnProfile profile) { |
| int user = UserHandle.getUserId(Binder.getCallingUid()); |
| final LinkProperties egress = getActiveLinkProperties(); |
| if (egress == null) { |
| throw new IllegalStateException("Missing active network connection"); |
| } |
| synchronized (mVpns) { |
| throwIfLockdownEnabled(); |
| 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. |
| */ |
| @Override |
| public LegacyVpnInfo getLegacyVpnInfo(int userId) { |
| enforceCrossUserPermission(userId); |
| |
| synchronized (mVpns) { |
| return mVpns.get(userId).getLegacyVpnInfo(); |
| } |
| } |
| |
| /** |
| * Return the information of all ongoing VPNs. |
| * |
| * <p>This method is used to update NetworkStatsService. |
| * |
| * <p>Must be called on the handler thread. |
| */ |
| private VpnInfo[] getAllVpnInfo() { |
| ensureRunningOnConnectivityServiceThread(); |
| synchronized (mVpns) { |
| if (mLockdownEnabled) { |
| return new VpnInfo[0]; |
| } |
| |
| List<VpnInfo> infoList = new ArrayList<>(); |
| for (int i = 0; i < mVpns.size(); i++) { |
| VpnInfo info = createVpnInfo(mVpns.valueAt(i)); |
| if (info != null) { |
| infoList.add(info); |
| } |
| } |
| return infoList.toArray(new VpnInfo[infoList.size()]); |
| } |
| } |
| |
| /** |
| * @return VPN information for accounting, or null if we can't retrieve all required |
| * information, e.g underlying ifaces. |
| */ |
| @Nullable |
| private VpnInfo createVpnInfo(Vpn vpn) { |
| VpnInfo info = vpn.getVpnInfo(); |
| if (info == null) { |
| return null; |
| } |
| Network[] underlyingNetworks = vpn.getUnderlyingNetworks(); |
| // see VpnService.setUnderlyingNetworks()'s javadoc about how to interpret |
| // the underlyingNetworks list. |
| if (underlyingNetworks == null) { |
| NetworkAgentInfo defaultNai = getDefaultNetwork(); |
| if (defaultNai != null) { |
| underlyingNetworks = new Network[] { defaultNai.network }; |
| } |
| } |
| if (underlyingNetworks != null && underlyingNetworks.length > 0) { |
| List<String> interfaces = new ArrayList<>(); |
| for (Network network : underlyingNetworks) { |
| LinkProperties lp = getLinkProperties(network); |
| if (lp != null) { |
| for (String iface : lp.getAllInterfaceNames()) { |
| if (!TextUtils.isEmpty(iface)) { |
| interfaces.add(iface); |
| } |
| } |
| } |
| } |
| if (!interfaces.isEmpty()) { |
| info.underlyingIfaces = interfaces.toArray(new String[interfaces.size()]); |
| } |
| } |
| return info.underlyingIfaces == null ? null : info; |
| } |
| |
| /** |
| * Returns the information of the ongoing VPN for {@code userId}. This method is used by |
| * VpnDialogs and not available in ConnectivityManager. |
| * Permissions are checked in Vpn class. |
| * @hide |
| */ |
| @Override |
| public VpnConfig getVpnConfig(int userId) { |
| enforceCrossUserPermission(userId); |
| synchronized (mVpns) { |
| Vpn vpn = mVpns.get(userId); |
| if (vpn != null) { |
| return vpn.getVpnConfig(); |
| } else { |
| return null; |
| } |
| } |
| } |
| |
| /** |
| * Ask all VPN objects to recompute and update their capabilities. |
| * |
| * When underlying networks change, VPNs may have to update capabilities to reflect things |
| * like the metered bit, their transports, and so on. This asks the VPN objects to update |
| * their capabilities, and as this will cause them to send messages to the ConnectivityService |
| * handler thread through their agent, this is asynchronous. When the capabilities objects |
| * are computed they will be up-to-date as they are computed synchronously from here and |
| * this is running on the ConnectivityService thread. |
| */ |
| private void updateAllVpnsCapabilities() { |
| Network defaultNetwork = getNetwork(getDefaultNetwork()); |
| synchronized (mVpns) { |
| for (int i = 0; i < mVpns.size(); i++) { |
| final Vpn vpn = mVpns.valueAt(i); |
| NetworkCapabilities nc = vpn.updateCapabilities(defaultNetwork); |
| updateVpnCapabilities(vpn, nc); |
| } |
| } |
| } |
| |
| private void updateVpnCapabilities(Vpn vpn, @Nullable NetworkCapabilities nc) { |
| ensureRunningOnConnectivityServiceThread(); |
| NetworkAgentInfo vpnNai = getNetworkAgentInfoForNetId(vpn.getNetId()); |
| if (vpnNai == null || nc == null) { |
| return; |
| } |
| updateCapabilities(vpnNai.getCurrentScore(), vpnNai, nc); |
| } |
| |
| @Override |
| public boolean updateLockdownVpn() { |
| if (Binder.getCallingUid() != Process.SYSTEM_UID) { |
| Slog.w(TAG, "Lockdown VPN only available to AID_SYSTEM"); |
| return false; |
| } |
| |
| synchronized (mVpns) { |
| // Tear down existing lockdown if profile was removed |
| mLockdownEnabled = LockdownVpnTracker.isEnabled(); |
| if (mLockdownEnabled) { |
| byte[] profileTag = mKeyStore.get(Credentials.LOCKDOWN_VPN); |
| if (profileTag == null) { |
| Slog.e(TAG, "Lockdown VPN configured but cannot be read from keystore"); |
| return false; |
| } |
| String profileName = new String(profileTag); |
| final VpnProfile profile = VpnProfile.decode( |
| profileName, mKeyStore.get(Credentials.VPN + profileName)); |
| if (profile == null) { |
| Slog.e(TAG, "Lockdown VPN configured invalid profile " + profileName); |
| setLockdownTracker(null); |
| return true; |
| } |
| int user = UserHandle.getUserId(Binder.getCallingUid()); |
| Vpn vpn = mVpns.get(user); |
| if (vpn == null) { |
| Slog.w(TAG, "VPN for user " + user + " not ready yet. Skipping lockdown"); |
| return false; |
| } |
| setLockdownTracker(new LockdownVpnTracker(mContext, this, mHandler, vpn, profile)); |
| } else { |
| setLockdownTracker(null); |
| } |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Internally set new {@link LockdownVpnTracker}, shutting down any existing |
| * {@link LockdownVpnTracker}. Can be {@code null} to disable lockdown. |
| */ |
| @GuardedBy("mVpns") |
| private void setLockdownTracker(LockdownVpnTracker tracker) { |
| // Shutdown any existing tracker |
| final LockdownVpnTracker existing = mLockdownTracker; |
| // TODO: Add a trigger when the always-on VPN enable/disable to reevaluate and send the |
| // necessary onBlockedStatusChanged callbacks. |
| mLockdownTracker = null; |
| if (existing != null) { |
| existing.shutdown(); |
| } |
| |
| if (tracker != null) { |
| mLockdownTracker = tracker; |
| mLockdownTracker.init(); |
| } |
| } |
| |
| /** |
| * Throws if there is any currently running, always-on Legacy VPN. |
| * |
| * <p>The LockdownVpnTracker and mLockdownEnabled both track whether an always-on Legacy VPN is |
| * running across the entire system. Tracking for app-based VPNs is done on a per-user, |
| * per-package basis in Vpn.java |
| */ |
| @GuardedBy("mVpns") |
| private void throwIfLockdownEnabled() { |
| if (mLockdownEnabled) { |
| throw new IllegalStateException("Unavailable in lockdown mode"); |
| } |
| } |
| |
| /** |
| * Starts the always-on VPN {@link VpnService} for user {@param userId}, which should perform |
| * some setup and then call {@code establish()} to connect. |
| * |
| * @return {@code true} if the service was started, the service was already connected, or there |
| * was no always-on VPN to start. {@code false} otherwise. |
| */ |
| private boolean startAlwaysOnVpn(int userId) { |
| synchronized (mVpns) { |
| Vpn vpn = mVpns.get(userId); |
| if (vpn == null) { |
| // Shouldn't happen as all code paths that point here should have checked the Vpn |
| // exists already. |
| Slog.wtf(TAG, "User " + userId + " has no Vpn configuration"); |
| return false; |
| } |
| |
| return vpn.startAlwaysOnVpn(); |
| } |
| } |
| |
| @Override |
| public boolean isAlwaysOnVpnPackageSupported(int userId, String packageName) { |
| enforceSettingsPermission(); |
| enforceCrossUserPermission(userId); |
| |
| synchronized (mVpns) { |
| Vpn vpn = mVpns.get(userId); |
| if (vpn == null) { |
| Slog.w(TAG, "User " + userId + " has no Vpn configuration"); |
| return false; |
| } |
| return vpn.isAlwaysOnPackageSupported(packageName); |
| } |
| } |
| |
| @Override |
| public boolean setAlwaysOnVpnPackage( |
| int userId, String packageName, boolean lockdown, List<String> lockdownWhitelist) { |
| enforceControlAlwaysOnVpnPermission(); |
| enforceCrossUserPermission(userId); |
| |
| synchronized (mVpns) { |
| // Can't set always-on VPN if legacy VPN is already in lockdown mode. |
| if (LockdownVpnTracker.isEnabled()) { |
| return false; |
| } |
| |
| Vpn vpn = mVpns.get(userId); |
| if (vpn == null) { |
| Slog.w(TAG, "User " + userId + " has no Vpn configuration"); |
| return false; |
| } |
| if (!vpn.setAlwaysOnPackage(packageName, lockdown, lockdownWhitelist)) { |
| return false; |
| } |
| if (!startAlwaysOnVpn(userId)) { |
| vpn.setAlwaysOnPackage(null, false, null); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public String getAlwaysOnVpnPackage(int userId) { |
| enforceControlAlwaysOnVpnPermission(); |
| enforceCrossUserPermission(userId); |
| |
| synchronized (mVpns) { |
| Vpn vpn = mVpns.get(userId); |
| if (vpn == null) { |
| Slog.w(TAG, "User " + userId + " has no Vpn configuration"); |
| return null; |
| } |
| return vpn.getAlwaysOnPackage(); |
| } |
| } |
| |
| @Override |
| public boolean isVpnLockdownEnabled(int userId) { |
| enforceControlAlwaysOnVpnPermission(); |
| enforceCrossUserPermission(userId); |
| |
| synchronized (mVpns) { |
| Vpn vpn = mVpns.get(userId); |
| if (vpn == null) { |
| Slog.w(TAG, "User " + userId + " has no Vpn configuration"); |
| return false; |
| } |
| return vpn.getLockdown(); |
| } |
| } |
| |
| @Override |
| public List<String> getVpnLockdownWhitelist(int userId) { |
| enforceControlAlwaysOnVpnPermission(); |
| enforceCrossUserPermission(userId); |
| |
| synchronized (mVpns) { |
| Vpn vpn = mVpns.get(userId); |
| if (vpn == null) { |
| Slog.w(TAG, "User " + userId + " has no Vpn configuration"); |
| return null; |
| } |
| return vpn.getLockdownWhitelist(); |
| } |
| } |
| |
| @Override |
| public int checkMobileProvisioning(int suggestedTimeOutMs) { |
| // TODO: Remove? Any reason to trigger a provisioning check? |
| return -1; |
| } |
| |
| /** Location to an updatable file listing carrier provisioning urls. |
| * An example: |
| * |
| * <?xml version="1.0" encoding="utf-8"?> |
| * <provisioningUrls> |
| * <provisioningUrl mcc="310" mnc="4">http://myserver.com/foo?mdn=%3$s&iccid=%1$s&imei=%2$s</provisioningUrl> |
| * </provisioningUrls> |
| */ |
| private static final String PROVISIONING_URL_PATH = |
| "/data/misc/radio/provisioning_urls.xml"; |
| private final File mProvisioningUrlFile = new File(PROVISIONING_URL_PATH); |
| |
| /** XML tag for root element. */ |
| private static final String TAG_PROVISIONING_URLS = "provisioningUrls"; |
| /** XML tag for individual url */ |
| private static final String TAG_PROVISIONING_URL = "provisioningUrl"; |
| /** XML attribute for mcc */ |
| private static final String ATTR_MCC = "mcc"; |
| /** XML attribute for mnc */ |
| private static final String ATTR_MNC = "mnc"; |
| |
| private String getProvisioningUrlBaseFromFile() { |
| XmlPullParser parser; |
| Configuration config = mContext.getResources().getConfiguration(); |
| |
| try (FileReader 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(TAG_PROVISIONING_URL)) { |
| 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); |
| } |
| return null; |
| } |
| |
| @Override |
| public String getMobileProvisioningUrl() { |
| enforceSettingsPermission(); |
| String url = getProvisioningUrlBaseFromFile(); |
| 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 number */); |
| } |
| |
| return url; |
| } |
| |
| @Override |
| public void setProvisioningNotificationVisible(boolean visible, int networkType, |
| String action) { |
| enforceSettingsPermission(); |
| if (!ConnectivityManager.isNetworkTypeValid(networkType)) { |
| return; |
| } |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| // Concatenate the range of types onto the range of NetIDs. |
| int id = NetIdManager.MAX_NET_ID + 1 + (networkType - ConnectivityManager.TYPE_NONE); |
| mNotifier.setProvNotificationVisible(visible, id, action); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| @Override |
| public void setAirplaneMode(boolean enable) { |
| enforceAirplaneModePermission(); |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| final ContentResolver cr = mContext.getContentResolver(); |
| Settings.Global.putInt(cr, Settings.Global.AIRPLANE_MODE_ON, encodeBool(enable)); |
| Intent intent = new Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED); |
| intent.putExtra("state", enable); |
| mContext.sendBroadcastAsUser(intent, UserHandle.ALL); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private void onUserStart(int userId) { |
| synchronized (mVpns) { |
| Vpn userVpn = mVpns.get(userId); |
| if (userVpn != null) { |
| loge("Starting user already has a VPN"); |
| return; |
| } |
| userVpn = new Vpn(mHandler.getLooper(), mContext, mNMS, userId); |
| mVpns.put(userId, userVpn); |
| if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { |
| updateLockdownVpn(); |
| } |
| } |
| } |
| |
| private void onUserStop(int userId) { |
| synchronized (mVpns) { |
| Vpn userVpn = mVpns.get(userId); |
| if (userVpn == null) { |
| loge("Stopped user has no VPN"); |
| return; |
| } |
| userVpn.onUserStopped(); |
| mVpns.delete(userId); |
| } |
| } |
| |
| private void onUserAdded(int userId) { |
| mPermissionMonitor.onUserAdded(userId); |
| Network defaultNetwork = getNetwork(getDefaultNetwork()); |
| synchronized (mVpns) { |
| final int vpnsSize = mVpns.size(); |
| for (int i = 0; i < vpnsSize; i++) { |
| Vpn vpn = mVpns.valueAt(i); |
| vpn.onUserAdded(userId); |
| NetworkCapabilities nc = vpn.updateCapabilities(defaultNetwork); |
| updateVpnCapabilities(vpn, nc); |
| } |
| } |
| } |
| |
| private void onUserRemoved(int userId) { |
| mPermissionMonitor.onUserRemoved(userId); |
| Network defaultNetwork = getNetwork(getDefaultNetwork()); |
| synchronized (mVpns) { |
| final int vpnsSize = mVpns.size(); |
| for (int i = 0; i < vpnsSize; i++) { |
| Vpn vpn = mVpns.valueAt(i); |
| vpn.onUserRemoved(userId); |
| NetworkCapabilities nc = vpn.updateCapabilities(defaultNetwork); |
| updateVpnCapabilities(vpn, nc); |
| } |
| } |
| } |
| |
| private void onPackageAdded(String packageName, int uid) { |
| if (TextUtils.isEmpty(packageName) || uid < 0) { |
| Slog.wtf(TAG, "Invalid package in onPackageAdded: " + packageName + " | " + uid); |
| return; |
| } |
| mPermissionMonitor.onPackageAdded(packageName, uid); |
| } |
| |
| private void onPackageReplaced(String packageName, int uid) { |
| if (TextUtils.isEmpty(packageName) || uid < 0) { |
| Slog.wtf(TAG, "Invalid package in onPackageReplaced: " + packageName + " | " + uid); |
| return; |
| } |
| final int userId = UserHandle.getUserId(uid); |
| synchronized (mVpns) { |
| final Vpn vpn = mVpns.get(userId); |
| if (vpn == null) { |
| return; |
| } |
| // Legacy always-on VPN won't be affected since the package name is not set. |
| if (TextUtils.equals(vpn.getAlwaysOnPackage(), packageName)) { |
| Slog.d(TAG, "Restarting always-on VPN package " + packageName + " for user " |
| + userId); |
| vpn.startAlwaysOnVpn(); |
| } |
| } |
| } |
| |
| private void onPackageRemoved(String packageName, int uid, boolean isReplacing) { |
| if (TextUtils.isEmpty(packageName) || uid < 0) { |
| Slog.wtf(TAG, "Invalid package in onPackageRemoved: " + packageName + " | " + uid); |
| return; |
| } |
| mPermissionMonitor.onPackageRemoved(uid); |
| |
| final int userId = UserHandle.getUserId(uid); |
| synchronized (mVpns) { |
| final Vpn vpn = mVpns.get(userId); |
| if (vpn == null) { |
| return; |
| } |
| // Legacy always-on VPN won't be affected since the package name is not set. |
| if (TextUtils.equals(vpn.getAlwaysOnPackage(), packageName) && !isReplacing) { |
| Slog.d(TAG, "Removing always-on VPN package " + packageName + " for user " |
| + userId); |
| vpn.setAlwaysOnPackage(null, false, null); |
| } |
| } |
| } |
| |
| private void onUserUnlocked(int userId) { |
| synchronized (mVpns) { |
| // User present may be sent because of an unlock, which might mean an unlocked keystore. |
| if (mUserManager.getUserInfo(userId).isPrimary() && LockdownVpnTracker.isEnabled()) { |
| updateLockdownVpn(); |
| } else { |
| startAlwaysOnVpn(userId); |
| } |
| } |
| } |
| |
| private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| ensureRunningOnConnectivityServiceThread(); |
| final String action = intent.getAction(); |
| final int userId = intent.getIntExtra(Intent.EXTRA_USER_HANDLE, UserHandle.USER_NULL); |
| final int uid = intent.getIntExtra(Intent.EXTRA_UID, -1); |
| final Uri packageData = intent.getData(); |
| final String packageName = |
| packageData != null ? packageData.getSchemeSpecificPart() : null; |
| if (userId == UserHandle.USER_NULL) return; |
| |
| if (Intent.ACTION_USER_STARTED.equals(action)) { |
| onUserStart(userId); |
| } else if (Intent.ACTION_USER_STOPPED.equals(action)) { |
| onUserStop(userId); |
| } else if (Intent.ACTION_USER_ADDED.equals(action)) { |
| onUserAdded(userId); |
| } else if (Intent.ACTION_USER_REMOVED.equals(action)) { |
| onUserRemoved(userId); |
| } else if (Intent.ACTION_USER_UNLOCKED.equals(action)) { |
| onUserUnlocked(userId); |
| } else if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { |
| onPackageAdded(packageName, uid); |
| } else if (Intent.ACTION_PACKAGE_REPLACED.equals(action)) { |
| onPackageReplaced(packageName, uid); |
| } else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) { |
| final boolean isReplacing = intent.getBooleanExtra( |
| Intent.EXTRA_REPLACING, false); |
| onPackageRemoved(packageName, uid, isReplacing); |
| } |
| } |
| }; |
| |
| private BroadcastReceiver mUserPresentReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // Try creating lockdown tracker, since user present usually means |
| // unlocked keystore. |
| updateLockdownVpn(); |
| mContext.unregisterReceiver(this); |
| } |
| }; |
| |
| private final HashMap<Messenger, NetworkProviderInfo> mNetworkProviderInfos = new HashMap<>(); |
| private final HashMap<NetworkRequest, NetworkRequestInfo> mNetworkRequests = new HashMap<>(); |
| |
| private static final int MAX_NETWORK_REQUESTS_PER_UID = 100; |
| // Map from UID to number of NetworkRequests that UID has filed. |
| @GuardedBy("mUidToNetworkRequestCount") |
| private final SparseIntArray mUidToNetworkRequestCount = new SparseIntArray(); |
| |
| private static class NetworkProviderInfo { |
| public final String name; |
| public final Messenger messenger; |
| private final AsyncChannel mAsyncChannel; |
| private final IBinder.DeathRecipient mDeathRecipient; |
| public final int providerId; |
| |
| NetworkProviderInfo(String name, Messenger messenger, AsyncChannel asyncChannel, |
| int providerId, IBinder.DeathRecipient deathRecipient) { |
| this.name = name; |
| this.messenger = messenger; |
| this.providerId = providerId; |
| mAsyncChannel = asyncChannel; |
| mDeathRecipient = deathRecipient; |
| |
| if ((mAsyncChannel == null) == (mDeathRecipient == null)) { |
| throw new AssertionError("Must pass exactly one of asyncChannel or deathRecipient"); |
| } |
| } |
| |
| boolean isLegacyNetworkFactory() { |
| return mAsyncChannel != null; |
| } |
| |
| void sendMessageToNetworkProvider(int what, int arg1, int arg2, Object obj) { |
| try { |
| messenger.send(Message.obtain(null /* handler */, what, arg1, arg2, obj)); |
| } catch (RemoteException e) { |
| // Remote process died. Ignore; the death recipient will remove this |
| // NetworkProviderInfo from mNetworkProviderInfos. |
| } |
| } |
| |
| void requestNetwork(NetworkRequest request, int score, int servingProviderId) { |
| if (isLegacyNetworkFactory()) { |
| mAsyncChannel.sendMessage(android.net.NetworkFactory.CMD_REQUEST_NETWORK, score, |
| servingProviderId, request); |
| } else { |
| sendMessageToNetworkProvider(NetworkProvider.CMD_REQUEST_NETWORK, score, |
| servingProviderId, request); |
| } |
| } |
| |
| void cancelRequest(NetworkRequest request) { |
| if (isLegacyNetworkFactory()) { |
| mAsyncChannel.sendMessage(android.net.NetworkFactory.CMD_CANCEL_REQUEST, request); |
| } else { |
| sendMessageToNetworkProvider(NetworkProvider.CMD_CANCEL_REQUEST, 0, 0, request); |
| } |
| } |
| |
| void connect(Context context, Handler handler) { |
| if (isLegacyNetworkFactory()) { |
| mAsyncChannel.connect(context, handler, messenger); |
| } else { |
| try { |
| messenger.getBinder().linkToDeath(mDeathRecipient, 0); |
| } catch (RemoteException e) { |
| mDeathRecipient.binderDied(); |
| } |
| } |
| } |
| |
| void completeConnection() { |
| if (isLegacyNetworkFactory()) { |
| mAsyncChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); |
| } |
| } |
| } |
| |
| private void ensureNetworkRequestHasType(NetworkRequest request) { |
| if (request.type == NetworkRequest.Type.NONE) { |
| throw new IllegalArgumentException( |
| "All NetworkRequests in ConnectivityService must have a type"); |
| } |
| } |
| |
| /** |
| * 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 { |
| final NetworkRequest request; |
| // The network currently satisfying this request, or null if none. Must only be touched |
| // on the handler thread. This only makes sense for network requests and not for listens, |
| // as defined by NetworkRequest#isRequest(). For listens, this is always null. |
| @Nullable |
| NetworkAgentInfo mSatisfier; |
| final PendingIntent mPendingIntent; |
| boolean mPendingIntentSent; |
| private final IBinder mBinder; |
| final int mPid; |
| final int mUid; |
| final Messenger messenger; |
| |
| NetworkRequestInfo(NetworkRequest r, PendingIntent pi) { |
| request = r; |
| ensureNetworkRequestHasType(request); |
| mPendingIntent = pi; |
| messenger = null; |
| mBinder = null; |
| mPid = getCallingPid(); |
| mUid = getCallingUid(); |
| enforceRequestCountLimit(); |
| } |
| |
| NetworkRequestInfo(Messenger m, NetworkRequest r, IBinder binder) { |
| super(); |
| messenger = m; |
| request = r; |
| ensureNetworkRequestHasType(request); |
| mBinder = binder; |
| mPid = getCallingPid(); |
| mUid = getCallingUid(); |
| mPendingIntent = null; |
| enforceRequestCountLimit(); |
| |
| try { |
| mBinder.linkToDeath(this, 0); |
| } catch (RemoteException e) { |
| binderDied(); |
| } |
| } |
| |
| NetworkRequestInfo(NetworkRequest r) { |
| this(r, null); |
| } |
| |
| private void enforceRequestCountLimit() { |
| synchronized (mUidToNetworkRequestCount) { |
| int networkRequests = mUidToNetworkRequestCount.get(mUid, 0) + 1; |
| if (networkRequests >= MAX_NETWORK_REQUESTS_PER_UID) { |
| throw new ServiceSpecificException( |
| ConnectivityManager.Errors.TOO_MANY_REQUESTS); |
| } |
| mUidToNetworkRequestCount.put(mUid, networkRequests); |
| } |
| } |
| |
| void unlinkDeathRecipient() { |
| if (mBinder != null) { |
| mBinder.unlinkToDeath(this, 0); |
| } |
| } |
| |
| public void binderDied() { |
| log("ConnectivityService NetworkRequestInfo binderDied(" + |
| request + ", " + mBinder + ")"); |
| releaseNetworkRequest(request); |
| } |
| |
| public String toString() { |
| return "uid/pid:" + mUid + "/" + mPid + " " + request + |
| (mPendingIntent == null ? "" : " to trigger " + mPendingIntent); |
| } |
| } |
| |
| private void ensureRequestableCapabilities(NetworkCapabilities networkCapabilities) { |
| final String badCapability = networkCapabilities.describeFirstNonRequestableCapability(); |
| if (badCapability != null) { |
| throw new IllegalArgumentException("Cannot request network with " + badCapability); |
| } |
| } |
| |
| // This checks that the passed capabilities either do not request a |
| // specific SSID/SignalStrength, or the calling app has permission to do so. |
| private void ensureSufficientPermissionsForRequest(NetworkCapabilities nc, |
| int callerPid, int callerUid, String callerPackageName) { |
| if (null != nc.getSSID() && !checkSettingsPermission(callerPid, callerUid)) { |
| throw new SecurityException("Insufficient permissions to request a specific SSID"); |
| } |
| |
| if (nc.hasSignalStrength() |
| && !checkNetworkSignalStrengthWakeupPermission(callerPid, callerUid)) { |
| throw new SecurityException( |
| "Insufficient permissions to request a specific signal strength"); |
| } |
| mAppOpsManager.checkPackage(callerUid, callerPackageName); |
| } |
| |
| private ArrayList<Integer> getSignalStrengthThresholds(NetworkAgentInfo nai) { |
| final SortedSet<Integer> thresholds = new TreeSet<>(); |
| synchronized (nai) { |
| for (NetworkRequestInfo nri : mNetworkRequests.values()) { |
| if (nri.request.networkCapabilities.hasSignalStrength() && |
| nai.satisfiesImmutableCapabilitiesOf(nri.request)) { |
| thresholds.add(nri.request.networkCapabilities.getSignalStrength()); |
| } |
| } |
| } |
| return new ArrayList<>(thresholds); |
| } |
| |
| private void updateSignalStrengthThresholds( |
| NetworkAgentInfo nai, String reason, NetworkRequest request) { |
| ArrayList<Integer> thresholdsArray = getSignalStrengthThresholds(nai); |
| Bundle thresholds = new Bundle(); |
| thresholds.putIntegerArrayList("thresholds", thresholdsArray); |
| |
| if (VDBG || (DBG && !"CONNECT".equals(reason))) { |
| String detail; |
| if (request != null && request.networkCapabilities.hasSignalStrength()) { |
| detail = reason + " " + request.networkCapabilities.getSignalStrength(); |
| } else { |
| detail = reason; |
| } |
| log(String.format("updateSignalStrengthThresholds: %s, sending %s to %s", |
| detail, Arrays.toString(thresholdsArray.toArray()), nai.toShortString())); |
| } |
| |
| nai.asyncChannel.sendMessage( |
| android.net.NetworkAgent.CMD_SET_SIGNAL_STRENGTH_THRESHOLDS, |
| 0, 0, thresholds); |
| } |
| |
| private void ensureValidNetworkSpecifier(NetworkCapabilities nc) { |
| if (nc == null) { |
| return; |
| } |
| NetworkSpecifier ns = nc.getNetworkSpecifier(); |
| if (ns == null) { |
| return; |
| } |
| MatchAllNetworkSpecifier.checkNotMatchAllNetworkSpecifier(ns); |
| } |
| |
| private void ensureValid(NetworkCapabilities nc) { |
| ensureValidNetworkSpecifier(nc); |
| if (nc.isPrivateDnsBroken()) { |
| throw new IllegalArgumentException("Can't request broken private DNS"); |
| } |
| } |
| |
| @Override |
| public NetworkRequest requestNetwork(NetworkCapabilities networkCapabilities, |
| Messenger messenger, int timeoutMs, IBinder binder, int legacyType, |
| @NonNull String callingPackageName) { |
| final int callingUid = Binder.getCallingUid(); |
| final NetworkRequest.Type type = (networkCapabilities == null) |
| ? NetworkRequest.Type.TRACK_DEFAULT |
| : NetworkRequest.Type.REQUEST; |
| // If the requested networkCapabilities is null, take them instead from |
| // the default network request. This allows callers to keep track of |
| // the system default network. |
| if (type == NetworkRequest.Type.TRACK_DEFAULT) { |
| networkCapabilities = createDefaultNetworkCapabilitiesForUid(callingUid); |
| enforceAccessPermission(); |
| } else { |
| networkCapabilities = new NetworkCapabilities(networkCapabilities); |
| enforceNetworkRequestPermissions(networkCapabilities); |
| // TODO: this is incorrect. We mark the request as metered or not depending on the state |
| // of the app when the request is filed, but we never change the request if the app |
| // changes network state. http://b/29964605 |
| enforceMeteredApnPolicy(networkCapabilities); |
| } |
| ensureRequestableCapabilities(networkCapabilities); |
| ensureSufficientPermissionsForRequest(networkCapabilities, |
| Binder.getCallingPid(), callingUid, callingPackageName); |
| // Set the UID range for this request to the single UID of the requester, or to an empty |
| // set of UIDs if the caller has the appropriate permission and UIDs have not been set. |
| // This will overwrite any allowed UIDs in the requested capabilities. Though there |
| // are no visible methods to set the UIDs, an app could use reflection to try and get |
| // networks for other apps so it's essential that the UIDs are overwritten. |
| restrictRequestUidsForCallerAndSetRequestorInfo(networkCapabilities, |
| callingUid, callingPackageName); |
| |
| if (timeoutMs < 0) { |
| throw new IllegalArgumentException("Bad timeout specified"); |
| } |
| ensureValid(networkCapabilities); |
| |
| NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, legacyType, |
| nextNetworkRequestId(), type); |
| NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder); |
| if (DBG) log("requestNetwork for " + nri); |
| |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST, nri)); |
| if (timeoutMs > 0) { |
| mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_TIMEOUT_NETWORK_REQUEST, |
| nri), timeoutMs); |
| } |
| return networkRequest; |
| } |
| |
| private void enforceNetworkRequestPermissions(NetworkCapabilities networkCapabilities) { |
| if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_RESTRICTED) == false) { |
| enforceConnectivityRestrictedNetworksPermission(); |
| } else { |
| enforceChangePermission(); |
| } |
| } |
| |
| @Override |
| public boolean requestBandwidthUpdate(Network network) { |
| enforceAccessPermission(); |
| NetworkAgentInfo nai = null; |
| if (network == null) { |
| return false; |
| } |
| synchronized (mNetworkForNetId) { |
| nai = mNetworkForNetId.get(network.netId); |
| } |
| if (nai != null) { |
| nai.asyncChannel.sendMessage(android.net.NetworkAgent.CMD_REQUEST_BANDWIDTH_UPDATE); |
| synchronized (mBandwidthRequests) { |
| final int uid = Binder.getCallingUid(); |
| Integer uidReqs = mBandwidthRequests.get(uid); |
| if (uidReqs == null) { |
| uidReqs = 0; |
| } |
| mBandwidthRequests.put(uid, ++uidReqs); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| private boolean isSystem(int uid) { |
| return uid < Process.FIRST_APPLICATION_UID; |
| } |
| |
| private void enforceMeteredApnPolicy(NetworkCapabilities networkCapabilities) { |
| final int uid = Binder.getCallingUid(); |
| if (isSystem(uid)) { |
| // Exemption for system uid. |
| return; |
| } |
| if (networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED)) { |
| // Policy already enforced. |
| return; |
| } |
| if (mPolicyManagerInternal.isUidRestrictedOnMeteredNetworks(uid)) { |
| // If UID is restricted, don't allow them to bring up metered APNs. |
| networkCapabilities.addCapability(NET_CAPABILITY_NOT_METERED); |
| } |
| } |
| |
| @Override |
| public NetworkRequest pendingRequestForNetwork(NetworkCapabilities networkCapabilities, |
| PendingIntent operation, @NonNull String callingPackageName) { |
| Objects.requireNonNull(operation, "PendingIntent cannot be null."); |
| final int callingUid = Binder.getCallingUid(); |
| networkCapabilities = new NetworkCapabilities(networkCapabilities); |
| enforceNetworkRequestPermissions(networkCapabilities); |
| enforceMeteredApnPolicy(networkCapabilities); |
| ensureRequestableCapabilities(networkCapabilities); |
| ensureSufficientPermissionsForRequest(networkCapabilities, |
| Binder.getCallingPid(), callingUid, callingPackageName); |
| ensureValidNetworkSpecifier(networkCapabilities); |
| restrictRequestUidsForCallerAndSetRequestorInfo(networkCapabilities, |
| callingUid, callingPackageName); |
| |
| NetworkRequest networkRequest = new NetworkRequest(networkCapabilities, TYPE_NONE, |
| nextNetworkRequestId(), NetworkRequest.Type.REQUEST); |
| NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation); |
| if (DBG) log("pendingRequest for " + nri); |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_REQUEST_WITH_INTENT, |
| nri)); |
| return networkRequest; |
| } |
| |
| private void releasePendingNetworkRequestWithDelay(PendingIntent operation) { |
| mHandler.sendMessageDelayed( |
| mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, |
| getCallingUid(), 0, operation), mReleasePendingIntentDelayMs); |
| } |
| |
| @Override |
| public void releasePendingNetworkRequest(PendingIntent operation) { |
| Objects.requireNonNull(operation, "PendingIntent cannot be null."); |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_RELEASE_NETWORK_REQUEST_WITH_INTENT, |
| getCallingUid(), 0, operation)); |
| } |
| |
| // In order to implement the compatibility measure for pre-M apps that call |
| // WifiManager.enableNetwork(..., true) without also binding to that network explicitly, |
| // WifiManager registers a network listen for the purpose of calling setProcessDefaultNetwork. |
| // This ensures it has permission to do so. |
| private boolean hasWifiNetworkListenPermission(NetworkCapabilities nc) { |
| if (nc == null) { |
| return false; |
| } |
| int[] transportTypes = nc.getTransportTypes(); |
| if (transportTypes.length != 1 || transportTypes[0] != NetworkCapabilities.TRANSPORT_WIFI) { |
| return false; |
| } |
| try { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.ACCESS_WIFI_STATE, |
| "ConnectivityService"); |
| } catch (SecurityException e) { |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public NetworkRequest listenForNetwork(NetworkCapabilities networkCapabilities, |
| Messenger messenger, IBinder binder, @NonNull String callingPackageName) { |
| final int callingUid = Binder.getCallingUid(); |
| if (!hasWifiNetworkListenPermission(networkCapabilities)) { |
| enforceAccessPermission(); |
| } |
| |
| NetworkCapabilities nc = new NetworkCapabilities(networkCapabilities); |
| ensureSufficientPermissionsForRequest(networkCapabilities, |
| Binder.getCallingPid(), callingUid, callingPackageName); |
| restrictRequestUidsForCallerAndSetRequestorInfo(nc, callingUid, callingPackageName); |
| // Apps without the CHANGE_NETWORK_STATE permission can't use background networks, so |
| // make all their listens include NET_CAPABILITY_FOREGROUND. That way, they will get |
| // onLost and onAvailable callbacks when networks move in and out of the background. |
| // There is no need to do this for requests because an app without CHANGE_NETWORK_STATE |
| // can't request networks. |
| restrictBackgroundRequestForCaller(nc); |
| ensureValid(nc); |
| |
| NetworkRequest networkRequest = new NetworkRequest(nc, TYPE_NONE, nextNetworkRequestId(), |
| NetworkRequest.Type.LISTEN); |
| NetworkRequestInfo nri = new NetworkRequestInfo(messenger, networkRequest, binder); |
| if (VDBG) log("listenForNetwork for " + nri); |
| |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); |
| return networkRequest; |
| } |
| |
| @Override |
| public void pendingListenForNetwork(NetworkCapabilities networkCapabilities, |
| PendingIntent operation, @NonNull String callingPackageName) { |
| Objects.requireNonNull(operation, "PendingIntent cannot be null."); |
| final int callingUid = Binder.getCallingUid(); |
| if (!hasWifiNetworkListenPermission(networkCapabilities)) { |
| enforceAccessPermission(); |
| } |
| ensureValid(networkCapabilities); |
| ensureSufficientPermissionsForRequest(networkCapabilities, |
| Binder.getCallingPid(), callingUid, callingPackageName); |
| final NetworkCapabilities nc = new NetworkCapabilities(networkCapabilities); |
| restrictRequestUidsForCallerAndSetRequestorInfo(nc, callingUid, callingPackageName); |
| |
| NetworkRequest networkRequest = new NetworkRequest(nc, TYPE_NONE, nextNetworkRequestId(), |
| NetworkRequest.Type.LISTEN); |
| NetworkRequestInfo nri = new NetworkRequestInfo(networkRequest, operation); |
| if (VDBG) log("pendingListenForNetwork for " + nri); |
| |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_LISTENER, nri)); |
| } |
| |
| /** Returns the next Network provider ID. */ |
| public final int nextNetworkProviderId() { |
| return mNextNetworkProviderId.getAndIncrement(); |
| } |
| |
| @Override |
| public void releaseNetworkRequest(NetworkRequest networkRequest) { |
| ensureNetworkRequestHasType(networkRequest); |
| mHandler.sendMessage(mHandler.obtainMessage( |
| EVENT_RELEASE_NETWORK_REQUEST, getCallingUid(), 0, networkRequest)); |
| } |
| |
| @Override |
| public int registerNetworkFactory(Messenger messenger, String name) { |
| enforceNetworkFactoryPermission(); |
| NetworkProviderInfo npi = new NetworkProviderInfo(name, messenger, new AsyncChannel(), |
| nextNetworkProviderId(), null /* deathRecipient */); |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_PROVIDER, npi)); |
| return npi.providerId; |
| } |
| |
| private void handleRegisterNetworkProvider(NetworkProviderInfo npi) { |
| if (mNetworkProviderInfos.containsKey(npi.messenger)) { |
| // Avoid creating duplicates. even if an app makes a direct AIDL call. |
| // This will never happen if an app calls ConnectivityManager#registerNetworkProvider, |
| // as that will throw if a duplicate provider is registered. |
| Slog.e(TAG, "Attempt to register existing NetworkProviderInfo " |
| + mNetworkProviderInfos.get(npi.messenger).name); |
| return; |
| } |
| |
| if (DBG) log("Got NetworkProvider Messenger for " + npi.name); |
| mNetworkProviderInfos.put(npi.messenger, npi); |
| npi.connect(mContext, mTrackerHandler); |
| if (!npi.isLegacyNetworkFactory()) { |
| // Legacy NetworkFactories get their requests when their AsyncChannel connects. |
| sendAllRequestsToProvider(npi); |
| } |
| } |
| |
| @Override |
| public int registerNetworkProvider(Messenger messenger, String name) { |
| enforceNetworkFactoryPermission(); |
| NetworkProviderInfo npi = new NetworkProviderInfo(name, messenger, |
| null /* asyncChannel */, nextNetworkProviderId(), |
| () -> unregisterNetworkProvider(messenger)); |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_REGISTER_NETWORK_PROVIDER, npi)); |
| return npi.providerId; |
| } |
| |
| @Override |
| public void unregisterNetworkProvider(Messenger messenger) { |
| enforceNetworkFactoryPermission(); |
| mHandler.sendMessage(mHandler.obtainMessage(EVENT_UNREGISTER_NETWORK_PROVIDER, messenger)); |
| } |
| |
| @Override |
| public void unregisterNetworkFactory(Messenger messenger) { |
| unregisterNetworkProvider(messenger); |
| } |
| |
| private void handleUnregisterNetworkProvider(Messenger messenger) { |
| NetworkProviderInfo npi = mNetworkProviderInfos.remove(messenger); |
| if (npi == null) { |
| loge("Failed to find Messenger in unregisterNetworkProvider"); |
| return; |
| } |
| if (DBG) log("unregisterNetworkProvider for " + npi.name); |
| } |
| |
| @Override |
| public void declareNetworkRequestUnfulfillable(NetworkRequest request) { |
| enforceNetworkFactoryPermission(); |
| mHandler.post(() -> handleReleaseNetworkRequest(request, Binder.getCallingUid(), true)); |
| } |
| |
| // NOTE: Accessed on multiple threads, must be synchronized on itself. |
| @GuardedBy("mNetworkForNetId") |
| private final SparseArray<NetworkAgentInfo> mNetworkForNetId = new SparseArray<>(); |
| // NOTE: Accessed on multiple threads, synchronized with mNetworkForNetId. |
| // An entry is first reserved with NetIdManager, prior to being added to mNetworkForNetId, so |
| // there may not be a strict 1:1 correlation between the two. |
| private final NetIdManager mNetIdManager; |
| |
| // NetworkAgentInfo keyed off its connecting messenger |
| // TODO - eval if we can reduce the number of lists/hashmaps/sparsearrays |
| // NOTE: Only should be accessed on ConnectivityServiceThread, except dump(). |
| private final HashMap<Messenger, NetworkAgentInfo> mNetworkAgentInfos = new HashMap<>(); |
| |
| @GuardedBy("mBlockedAppUids") |
| private final HashSet<Integer> mBlockedAppUids = new HashSet<>(); |
| |
| // Note: if mDefaultRequest is changed, NetworkMonitor needs to be updated. |
| @NonNull |
| private final NetworkRequest mDefaultRequest; |
| // The NetworkAgentInfo currently satisfying the default request, if any. |
| @Nullable |
| private volatile NetworkAgentInfo mDefaultNetworkNai = null; |
| |
| // Request used to optionally keep mobile data active even when higher |
| // priority networks like Wi-Fi are active. |
| private final NetworkRequest mDefaultMobileDataRequest; |
| |
| // Request used to optionally keep wifi data active even when higher |
| // priority networks like ethernet are active. |
| private final NetworkRequest mDefaultWifiRequest; |
| |
| private NetworkAgentInfo getDefaultNetwork() { |
| return mDefaultNetworkNai; |
| } |
| |
| @Nullable |
| private Network getNetwork(@Nullable NetworkAgentInfo nai) { |
| return nai != null ? nai.network : null; |
| } |
| |
| private void ensureRunningOnConnectivityServiceThread() { |
| if (mHandler.getLooper().getThread() != Thread.currentThread()) { |
| throw new IllegalStateException( |
| "Not running on ConnectivityService thread: " |
| + Thread.currentThread().getName()); |
| } |
| } |
| |
| @VisibleForTesting |
| protected boolean isDefaultNetwork(NetworkAgentInfo nai) { |
| return nai == getDefaultNetwork(); |
| } |
| |
| private boolean isDefaultRequest(NetworkRequestInfo nri) { |
| return nri.request.requestId == mDefaultRequest.requestId; |
| } |
| |
| /** |
| * Register a new agent with ConnectivityService to handle a network. |
| * |
| * @param messenger a messenger for ConnectivityService to contact the agent asynchronously. |
| * @param networkInfo the initial info associated with this network. It can be updated later : |
| * see {@link #updateNetworkInfo}. |
| * @param linkProperties the initial link properties of this network. They can be updated |
| * later : see {@link #updateLinkProperties}. |
| * @param networkCapabilities the initial capabilites of this network. They can be updated |
| * later : see {@link #updateCapabilities}. |
| * @param currentScore the initial score of the network. See |
| * {@link NetworkAgentInfo#getCurrentScore}. |
| * @param networkAgentConfig metadata about the network. This is never updated. |
| * @param providerId the ID of the provider owning this NetworkAgent. |
| * @return the network created for this agent. |
| */ |
| public Network registerNetworkAgent(Messenger messenger, NetworkInfo networkInfo, |
| LinkProperties linkProperties, NetworkCapabilities networkCapabilities, |
| NetworkScore currentScore, NetworkAgentConfig networkAgentConfig, int providerId) { |
| enforceNetworkFactoryPermission(); |
| |
| LinkProperties lp = new LinkProperties(linkProperties); |
| lp.ensureDirectlyConnectedRoutes(); |
| // TODO: Instead of passing mDefaultRequest, provide an API to determine whether a Network |
| // satisfies mDefaultRequest. |
| final NetworkCapabilities nc = new NetworkCapabilities(networkCapabilities); |
| final NetworkAgentInfo nai = new NetworkAgentInfo(messenger, new AsyncChannel(), |
| new Network(mNetIdManager.reserveNetId()), new NetworkInfo(networkInfo), lp, nc, |
| currentScore, mContext, mTrackerHandler, new NetworkAgentConfig(networkAgentConfig), |
| this, mNetd, mDnsResolver, mNMS, providerId); |
| // Make sure the network capabilities reflect what the agent info says. |
| nai.getAndSetNetworkCapabilities(mixInCapabilities(nai, nc)); |
| final String extraInfo = networkInfo.getExtraInfo(); |
| final String name = TextUtils.isEmpty(extraInfo) |
| ? nai.networkCapabilities.getSSID() : extraInfo; |
| if (DBG) log("registerNetworkAgent " + nai); |
| final long token = Binder.clearCallingIdentity(); |
| try { |
| mDeps.getNetworkStack().makeNetworkMonitor( |
| nai.network, name, new NetworkMonitorCallbacks(nai)); |
| } finally { |
| Binder.restoreCallingIdentity(token); |
| } |
| // NetworkAgentInfo registration will finish when the NetworkMonitor is created. |
| // If the network disconnects or sends any other event before that, messages are deferred by |
| // NetworkAgent until nai.asyncChannel.connect(), which will be called when finalizing the |
| // registration. |
| return nai.network; |
| } |
| |
| private void handleRegisterNetworkAgent(NetworkAgentInfo nai, INetworkMonitor networkMonitor) { |
| nai.onNetworkMonitorCreated(networkMonitor); |
| if (VDBG) log("Got NetworkAgent Messenger"); |
| mNetworkAgentInfos.put(nai.messenger, nai); |
| synchronized (mNetworkForNetId) { |
| mNetworkForNetId.put(nai.network.netId, nai); |
| } |
| |
| try { |
| networkMonitor.start(); |
| } catch (RemoteException e) { |
| e.rethrowAsRuntimeException(); |
| } |
| nai.asyncChannel.connect(mContext, mTrackerHandler, nai.messenger); |
| NetworkInfo networkInfo = nai.networkInfo; |
| updateNetworkInfo(nai, networkInfo); |
| updateUids(nai, null, nai.networkCapabilities); |
| } |
| |
| private void updateLinkProperties(NetworkAgentInfo networkAgent, LinkProperties newLp, |
| @NonNull LinkProperties oldLp) { |
| int netId = networkAgent.network.netId; |
| |
| // The NetworkAgentInfo does not know whether clatd is running on its network or not, or |
| // whether there is a NAT64 prefix. Before we do anything else, make sure its LinkProperties |
| // are accurate. |
| networkAgent.clatd.fixupLinkProperties(oldLp, newLp); |
| |
| updateInterfaces(newLp, oldLp, netId, networkAgent.networkCapabilities, |
| networkAgent.networkInfo.getType()); |
| |
| // update filtering rules, need to happen after the interface update so netd knows about the |
| // new interface (the interface name -> index map becomes initialized) |
| updateVpnFiltering(newLp, oldLp, networkAgent); |
| |
| updateMtu(newLp, oldLp); |
| // TODO - figure out what to do for clat |
| // for (LinkProperties lp : newLp.getStackedLinks()) { |
| // updateMtu(lp, null); |
| // } |
| if (isDefaultNetwork(networkAgent)) { |
| updateTcpBufferSizes(newLp.getTcpBufferSizes()); |
| } |
| |
| updateRoutes(newLp, oldLp, netId); |
| updateDnses(newLp, oldLp, netId); |
| // Make sure LinkProperties represents the latest private DNS status. |
| // This does not need to be done before updateDnses because the |
| // LinkProperties are not the source of the private DNS configuration. |
| // updateDnses will fetch the private DNS configuration from DnsManager. |
| mDnsManager.updatePrivateDnsStatus(netId, newLp); |
| |
| if (isDefaultNetwork(networkAgent)) { |
| handleApplyDefaultProxy(newLp.getHttpProxy()); |
| } else { |
| updateProxy(newLp, oldLp); |
| } |
| |
| updateWakeOnLan(newLp); |
| |
| // TODO - move this check to cover the whole function |
| if (!Objects.equals(newLp, oldLp)) { |
| synchronized (networkAgent) { |
| networkAgent.linkProperties = newLp; |
| } |
| // Start or stop DNS64 detection and 464xlat according to network state. |
| networkAgent.clatd.update(); |
| notifyIfacesChangedForNetworkStats(); |
| networkAgent.networkMonitor().notifyLinkPropertiesChanged(newLp); |
| if (networkAgent.everConnected) { |
| notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_IP_CHANGED); |
| } |
| } |
| |
| mKeepaliveTracker.handleCheckKeepalivesStillValid(networkAgent); |
| } |
| |
| private void wakeupModifyInterface(String iface, NetworkCapabilities caps, boolean add) { |
| // Marks are only available on WiFi interfaces. Checking for |
| // marks on unsupported interfaces is harmless. |
| if (!caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) { |
| return; |
| } |
| |
| int mark = mContext.getResources().getInteger( |
| com.android.internal.R.integer.config_networkWakeupPacketMark); |
| int mask = mContext.getResources().getInteger( |
| com.android.internal.R.integer.config_networkWakeupPacketMask); |
| |
| // Mask/mark of zero will not detect anything interesting. |
| // Don't install rules unless both values are nonzero. |
| if (mark == 0 || mask == 0) { |
| return; |
| } |
| |
| final String prefix = "iface:" + iface; |
| try { |
| if (add) { |
| mNetd.wakeupAddInterface(iface, prefix, mark, mask); |
| } else { |
| mNetd.wakeupDelInterface(iface, prefix, mark, mask); |
| } |
| } catch (Exception e) { |
| loge("Exception modifying wakeup packet monitoring: " + e); |
| } |
| |
| } |
| |
| private void updateInterfaces(final @Nullable LinkProperties newLp, |
| final @Nullable LinkProperties oldLp, final int netId, |
| final @Nullable NetworkCapabilities caps, final int legacyType) { |
| final CompareResult<String> interfaceDiff = new CompareResult<>( |
| oldLp != null ? oldLp.getAllInterfaceNames() : null, |
| newLp != null ? newLp.getAllInterfaceNames() : null); |
| if (!interfaceDiff.added.isEmpty()) { |
| final IBatteryStats bs = mDeps.getBatteryStatsService(); |
| for (final String iface : interfaceDiff.added) { |
| try { |
| if (DBG) log("Adding iface " + iface + " to network " + netId); |
| mNMS.addInterfaceToNetwork(iface, netId); |
| wakeupModifyInterface(iface, caps, true); |
| bs.noteNetworkInterfaceType(iface, legacyType); |
| } catch (Exception e) { |
| loge("Exception adding interface: " + e); |
| } |
| } |
| } |
| for (final String iface : interfaceDiff.removed) { |
| try { |
| if (DBG) log("Removing iface " + iface + " from network " + netId); |
| wakeupModifyInterface(iface, caps, false); |
| mNMS.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) { |
| // Compare the route diff to determine which routes should be added and removed. |
| CompareResult<RouteInfo> routeDiff = new CompareResult<>( |
| oldLp != null ? oldLp.getAllRoutes() : null, |
| newLp != null ? newLp.getAllRoutes() : null); |
| |
| // add routes before removing old in case it helps with continuous connectivity |
| |
| // do this twice, adding non-next-hop routes first, then routes they are dependent on |
| for (RouteInfo route : routeDiff.added) { |
| if (route.hasGateway()) continue; |
| if (VDBG || DDBG) log("Adding Route [" + route + "] to network " + netId); |
| try { |
| mNMS.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()) continue; |
| if (VDBG || DDBG) log("Adding Route [" + route + "] to network " + netId); |
| try { |
| mNMS.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 (VDBG || DDBG) log("Removing Route [" + route + "] from network " + netId); |
| try { |
| mNMS.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) { |
| if (oldLp != null && newLp.isIdenticalDnses(oldLp)) { |
| return; // no updating necessary |
| } |
| |
| final NetworkAgentInfo defaultNai = getDefaultNetwork(); |
| final boolean isDefaultNetwork = (defaultNai != null && defaultNai.network.netId == netId); |
| |
| if (DBG) { |
| final Collection<InetAddress> dnses = newLp.getDnsServers(); |
| log("Setting DNS servers for network " + netId + " to " + dnses); |
| } |
| try { |
| mDnsManager.setDnsConfigurationForNetwork(netId, newLp, isDefaultNetwork); |
| } catch (Exception e) { |
| loge("Exception in setDnsConfigurationForNetwork: " + e); |
| } |
| } |
| |
| private void updateVpnFiltering(LinkProperties newLp, LinkProperties oldLp, |
| NetworkAgentInfo nai) { |
| final String oldIface = oldLp != null ? oldLp.getInterfaceName() : null; |
| final String newIface = newLp != null ? newLp.getInterfaceName() : null; |
| final boolean wasFiltering = requiresVpnIsolation(nai, nai.networkCapabilities, oldLp); |
| final boolean needsFiltering = requiresVpnIsolation(nai, nai.networkCapabilities, newLp); |
| |
| if (!wasFiltering && !needsFiltering) { |
| // Nothing to do. |
| return; |
| } |
| |
| if (Objects.equals(oldIface, newIface) && (wasFiltering == needsFiltering)) { |
| // Nothing changed. |
| return; |
| } |
| |
| final Set<UidRange> ranges = nai.networkCapabilities.getUids(); |
| final int vpnAppUid = nai.networkCapabilities.getOwnerUid(); |
| // TODO: this create a window of opportunity for apps to receive traffic between the time |
| // when the old rules are removed and the time when new rules are added. To fix this, |
| // make eBPF support two whitelisted interfaces so here new rules can be added before the |
| // old rules are being removed. |
| if (wasFiltering) { |
| mPermissionMonitor.onVpnUidRangesRemoved(oldIface, ranges, vpnAppUid); |
| } |
| if (needsFiltering) { |
| mPermissionMonitor.onVpnUidRangesAdded(newIface, ranges, vpnAppUid); |
| } |
| } |
| |
| private void updateWakeOnLan(@NonNull LinkProperties lp) { |
| lp.setWakeOnLanSupported(mWolSupportedInterfaces.contains(lp.getInterfaceName())); |
| } |
| |
| private int getNetworkPermission(NetworkCapabilities nc) { |
| if (!nc.hasCapability(NET_CAPABILITY_NOT_RESTRICTED)) { |
| return INetd.PERMISSION_SYSTEM; |
| } |
| if (!nc.hasCapability(NET_CAPABILITY_FOREGROUND)) { |
| return INetd.PERMISSION_NETWORK; |
| } |
| return INetd.PERMISSION_NONE; |
| } |
| |
| private void updateNetworkPermissions(@NonNull final NetworkAgentInfo nai, |
| @NonNull final NetworkCapabilities newNc) { |
| final int oldPermission = getNetworkPermission(nai.networkCapabilities); |
| final int newPermission = getNetworkPermission(newNc); |
| if (oldPermission != newPermission && nai.created && !nai.isVPN()) { |
| try { |
| mNMS.setNetworkPermission(nai.network.netId, newPermission); |
| } catch (RemoteException e) { |
| loge("Exception in setNetworkPermission: " + e); |
| } |
| } |
| } |
| |
| /** |
| * Augments the NetworkCapabilities passed in by a NetworkAgent with capabilities that are |
| * maintained here that the NetworkAgent is not aware of (e.g., validated, captive portal, |
| * and foreground status). |
| */ |
| private NetworkCapabilities mixInCapabilities(NetworkAgentInfo nai, NetworkCapabilities nc) { |
| // Once a NetworkAgent is connected, complain if some immutable capabilities are removed. |
| // Don't complain for VPNs since they're not driven by requests and there is no risk of |
| // causing a connect/teardown loop. |
| // TODO: remove this altogether and make it the responsibility of the NetworkProviders to |
| // avoid connect/teardown loops. |
| if (nai.everConnected && |
| !nai.isVPN() && |
| !nai.networkCapabilities.satisfiedByImmutableNetworkCapabilities(nc)) { |
| // TODO: consider not complaining when a network agent degrades its capabilities if this |
| // does not cause any request (that is not a listen) currently matching that agent to |
| // stop being matched by the updated agent. |
| String diff = nai.networkCapabilities.describeImmutableDifferences(nc); |
| if (!TextUtils.isEmpty(diff)) { |
| Slog.wtf(TAG, "BUG: " + nai + " lost immutable capabilities:" + diff); |
| } |
| } |
| |
| // Don't modify caller's NetworkCapabilities. |
| NetworkCapabilities newNc = new NetworkCapabilities(nc); |
| if (nai.lastValidated) { |
| newNc.addCapability(NET_CAPABILITY_VALIDATED); |
| } else { |
| newNc.removeCapability(NET_CAPABILITY_VALIDATED); |
| } |
| if (nai.lastCaptivePortalDetected) { |
| newNc.addCapability(NET_CAPABILITY_CAPTIVE_PORTAL); |
| } else { |
| newNc.removeCapability(NET_CAPABILITY_CAPTIVE_PORTAL); |
| } |
| if (nai.isBackgroundNetwork()) { |
| newNc.removeCapability(NET_CAPABILITY_FOREGROUND); |
| } else { |
| newNc.addCapability(NET_CAPABILITY_FOREGROUND); |
| } |
| if (nai.partialConnectivity) { |
| newNc.addCapability(NET_CAPABILITY_PARTIAL_CONNECTIVITY); |
| } else { |
| newNc.removeCapability(NET_CAPABILITY_PARTIAL_CONNECTIVITY); |
| } |
| newNc.setPrivateDnsBroken(nai.networkCapabilities.isPrivateDnsBroken()); |
| |
| // TODO : remove this once all factories are updated to send NOT_SUSPENDED and NOT_ROAMING |
| if (!newNc.hasTransport(TRANSPORT_CELLULAR)) { |
| newNc.addCapability(NET_CAPABILITY_NOT_SUSPENDED); |
| newNc.addCapability(NET_CAPABILITY_NOT_ROAMING); |
| } |
| |
| return newNc; |
| } |
| |
| /** |
| * Update the NetworkCapabilities for {@code nai} to {@code nc}. Specifically: |
| * |
| * 1. Calls mixInCapabilities to merge the passed-in NetworkCapabilities {@code nc} with the |
| * capabilities we manage and store in {@code nai}, such as validated status and captive |
| * portal status) |
| * 2. Takes action on the result: changes network permissions, sends CAP_CHANGED callbacks, and |
| * potentially triggers rematches. |
| * 3. Directly informs other network stack components (NetworkStatsService, VPNs, etc. of the |
| * change.) |
| * |
| * @param oldScore score of the network before any of the changes that prompted us |
| * to call this function. |
| * @param nai the network having its capabilities updated. |
| * @param nc the new network capabilities. |
| */ |
| private void updateCapabilities(final int oldScore, @NonNull final NetworkAgentInfo nai, |
| @NonNull final NetworkCapabilities nc) { |
| NetworkCapabilities newNc = mixInCapabilities(nai, nc); |
| if (Objects.equals(nai.networkCapabilities, newNc)) return; |
| updateNetworkPermissions(nai, newNc); |
| final NetworkCapabilities prevNc = nai.getAndSetNetworkCapabilities(newNc); |
| |
| updateUids(nai, prevNc, newNc); |
| |
| if (nai.getCurrentScore() == oldScore && newNc.equalRequestableCapabilities(prevNc)) { |
| // If the requestable capabilities haven't changed, and the score hasn't changed, then |
| // the change we're processing can't affect any requests, it can only affect the listens |
| // on this network. We might have been called by rematchNetworkAndRequests when a |
| // network changed foreground state. |
| processListenRequests(nai); |
| final boolean prevSuspended = !prevNc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED); |
| final boolean suspended = !newNc.hasCapability(NET_CAPABILITY_NOT_SUSPENDED); |
| final boolean prevRoaming = !prevNc.hasCapability(NET_CAPABILITY_NOT_ROAMING); |
| final boolean roaming = !newNc.hasCapability(NET_CAPABILITY_NOT_ROAMING); |
| if (prevSuspended != suspended || prevRoaming != roaming) { |
| // TODO (b/73132094) : remove this call once the few users of onSuspended and |
| // onResumed have been removed. |
| notifyNetworkCallbacks(nai, suspended ? ConnectivityManager.CALLBACK_SUSPENDED |
| : ConnectivityManager.CALLBACK_RESUMED); |
| // updateNetworkInfo will mix in the suspended info from the capabilities and |
| // take appropriate action for the network having possibly changed state. |
| updateNetworkInfo(nai, nai.networkInfo); |
| } |
| } else { |
| // If the requestable capabilities have changed or the score changed, we can't have been |
| // called by rematchNetworkAndRequests, so it's safe to start a rematch. |
| rematchAllNetworksAndRequests(); |
| notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); |
| } |
| |
| // TODO : static analysis indicates that prevNc can't be null here (getAndSetNetworkCaps |
| // never returns null), so mark the relevant members and functions in nai as @NonNull and |
| // remove this test |
| if (prevNc != null) { |
| final boolean oldMetered = prevNc.isMetered(); |
| final boolean newMetered = newNc.isMetered(); |
| final boolean meteredChanged = oldMetered != newMetered; |
| |
| if (meteredChanged) { |
| maybeNotifyNetworkBlocked(nai, oldMetered, newMetered, mRestrictBackground, |
| mRestrictBackground); |
| } |
| |
| final boolean roamingChanged = prevNc.hasCapability(NET_CAPABILITY_NOT_ROAMING) != |
| newNc.hasCapability(NET_CAPABILITY_NOT_ROAMING); |
| |
| // Report changes that are interesting for network statistics tracking. |
| if (meteredChanged || roamingChanged) { |
| notifyIfacesChangedForNetworkStats(); |
| } |
| } |
| |
| if (!newNc.hasTransport(TRANSPORT_VPN)) { |
| // Tell VPNs about updated capabilities, since they may need to |
| // bubble those changes through. |
| updateAllVpnsCapabilities(); |
| } |
| } |
| |
| /** |
| * Returns whether VPN isolation (ingress interface filtering) should be applied on the given |
| * network. |
| * |
| * Ingress interface filtering enforces that all apps under the given network can only receive |
| * packets from the network's interface (and loopback). This is important for VPNs because |
| * apps that cannot bypass a fully-routed VPN shouldn't be able to receive packets from any |
| * non-VPN interfaces. |
| * |
| * As a result, this method should return true iff |
| * 1. the network is an app VPN (not legacy VPN) |
| * 2. the VPN does not allow bypass |
| * 3. the VPN is fully-routed |
| * 4. the VPN interface is non-null |
| * |
| * @see INetd#firewallAddUidInterfaceRules |
| * @see INetd#firewallRemoveUidInterfaceRules |
| */ |
| private boolean requiresVpnIsolation(@NonNull NetworkAgentInfo nai, NetworkCapabilities nc, |
| LinkProperties lp) { |
| if (nc == null || lp == null) return false; |
| return nai.isVPN() |
| && !nai.networkAgentConfig.allowBypass |
| && nc.getOwnerUid() != Process.SYSTEM_UID |
| && lp.getInterfaceName() != null |
| && (lp.hasIPv4DefaultRoute() || lp.hasIPv6DefaultRoute()); |
| } |
| |
| private void updateUids(NetworkAgentInfo nai, NetworkCapabilities prevNc, |
| NetworkCapabilities newNc) { |
| Set<UidRange> prevRanges = null == prevNc ? null : prevNc.getUids(); |
| Set<UidRange> newRanges = null == newNc ? null : newNc.getUids(); |
| if (null == prevRanges) prevRanges = new ArraySet<>(); |
| if (null == newRanges) newRanges = new ArraySet<>(); |
| final Set<UidRange> prevRangesCopy = new ArraySet<>(prevRanges); |
| |
| prevRanges.removeAll(newRanges); |
| newRanges.removeAll(prevRangesCopy); |
| |
| try { |
| // When updating the VPN uid routing rules, add the new range first then remove the old |
| // range. If old range were removed first, there would be a window between the old |
| // range being removed and the new range being added, during which UIDs contained |
| // in both ranges are not subject to any VPN routing rules. Adding new range before |
| // removing old range works because, unlike the filtering rules below, it's possible to |
| // add duplicate UID routing rules. |
| if (!newRanges.isEmpty()) { |
| final UidRange[] addedRangesArray = new UidRange[newRanges.size()]; |
| newRanges.toArray(addedRangesArray); |
| mNMS.addVpnUidRanges(nai.network.netId, addedRangesArray); |
| } |
| if (!prevRanges.isEmpty()) { |
| final UidRange[] removedRangesArray = new UidRange[prevRanges.size()]; |
| prevRanges.toArray(removedRangesArray); |
| mNMS.removeVpnUidRanges(nai.network.netId, removedRangesArray); |
| } |
| final boolean wasFiltering = requiresVpnIsolation(nai, prevNc, nai.linkProperties); |
| final boolean shouldFilter = requiresVpnIsolation(nai, newNc, nai.linkProperties); |
| final String iface = nai.linkProperties.getInterfaceName(); |
| // For VPN uid interface filtering, old ranges need to be removed before new ranges can |
| // be added, due to the range being expanded and stored as invidiual UIDs. For example |
| // the UIDs might be updated from [0, 99999] to ([0, 10012], [10014, 99999]) which means |
| // prevRanges = [0, 99999] while newRanges = [0, 10012], [10014, 99999]. If prevRanges |
| // were added first and then newRanges got removed later, there would be only one uid |
| // 10013 left. A consequence of removing old ranges before adding new ranges is that |
| // there is now a window of opportunity when the UIDs are not subject to any filtering. |
| // Note that this is in contrast with the (more robust) update of VPN routing rules |
| // above, where the addition of new ranges happens before the removal of old ranges. |
| // TODO Fix this window by computing an accurate diff on Set<UidRange>, so the old range |
| // to be removed will never overlap with the new range to be added. |
| if (wasFiltering && !prevRanges.isEmpty()) { |
| mPermissionMonitor.onVpnUidRangesRemoved(iface, prevRanges, prevNc.getOwnerUid()); |
| } |
| if (shouldFilter && !newRanges.isEmpty()) { |
| mPermissionMonitor.onVpnUidRangesAdded(iface, newRanges, newNc.getOwnerUid()); |
| } |
| } catch (Exception e) { |
| // Never crash! |
| loge("Exception in updateUids: ", e); |
| } |
| } |
| |
| public void handleUpdateLinkProperties(NetworkAgentInfo nai, LinkProperties newLp) { |
| ensureRunningOnConnectivityServiceThread(); |
| |
| if (getNetworkAgentInfoForNetId(nai.network.netId) != nai) { |
| // Ignore updates for disconnected networks |
| return; |
| } |
| // newLp is already a defensive copy. |
| newLp.ensureDirectlyConnectedRoutes(); |
| if (VDBG || DDBG) { |
| log("Update of LinkProperties for " + nai.toShortString() |
| + "; created=" + nai.created |
| + "; everConnected=" + nai.everConnected); |
| } |
| updateLinkProperties(nai, newLp, new LinkProperties(nai.linkProperties)); |
| } |
| |
| private void sendUpdatedScoreToFactories(NetworkAgentInfo nai) { |
| for (int i = 0; i < nai.numNetworkRequests(); i++) { |
| NetworkRequest nr = nai.requestAt(i); |
| // Don't send listening requests to factories. b/17393458 |
| if (nr.isListen()) continue; |
| sendUpdatedScoreToFactories(nr, nai); |
| } |
| } |
| |
| private void sendUpdatedScoreToFactories(@NonNull NetworkRequest networkRequest, |
| @Nullable NetworkAgentInfo nai) { |
| final int score; |
| final int serial; |
| if (nai != null) { |
| score = nai.getCurrentScore(); |
| serial = nai.factorySerialNumber; |
| } else { |
| score = 0; |
| serial = 0; |
| } |
| if (VDBG || DDBG){ |
| log("sending new Min Network Score(" + score + "): " + networkRequest.toString()); |
| } |
| for (NetworkProviderInfo npi : mNetworkProviderInfos.values()) { |
| npi.requestNetwork(networkRequest, score, serial); |
| } |
| } |
| |
| /** Sends all current NetworkRequests to the specified factory. */ |
| private void sendAllRequestsToProvider(NetworkProviderInfo npi) { |
| ensureRunningOnConnectivityServiceThread(); |
| for (NetworkRequestInfo nri : mNetworkRequests.values()) { |
| if (nri.request.isListen()) continue; |
| NetworkAgentInfo nai = nri.mSatisfier; |
| final int score; |
| final int serial; |
| if (nai != null) { |
| score = nai.getCurrentScore(); |
| serial = nai.factorySerialNumber; |
| } else { |
| score = 0; |
| serial = NetworkProvider.ID_NONE; |
| } |
| npi.requestNetwork(nri.request, score, serial); |
| } |
| } |
| |
| private void sendPendingIntentForRequest(NetworkRequestInfo nri, NetworkAgentInfo networkAgent, |
| int notificationType) { |
| if (notificationType == ConnectivityManager.CALLBACK_AVAILABLE && !nri.mPendingIntentSent) { |
| Intent intent = new Intent(); |
| intent.putExtra(ConnectivityManager.EXTRA_NETWORK, networkAgent.network); |
| intent.putExtra(ConnectivityManager.EXTRA_NETWORK_REQUEST, nri.request); |
| nri.mPendingIntentSent = true; |
| sendIntent(nri.mPendingIntent, intent); |
| } |
| // else not handled |
| } |
| |
| private void sendIntent(PendingIntent pendingIntent, Intent intent) { |
| mPendingIntentWakeLock.acquire(); |
| try { |
| if (DBG) log("Sending " + pendingIntent); |
| pendingIntent.send(mContext, 0, intent, this /* onFinished */, null /* Handler */); |
| } catch (PendingIntent.CanceledException e) { |
| if (DBG) log(pendingIntent + " was not sent, it had been canceled."); |
| mPendingIntentWakeLock.release(); |
| releasePendingNetworkRequest(pendingIntent); |
| } |
| // ...otherwise, mPendingIntentWakeLock.release() gets called by onSendFinished() |
| } |
| |
| @Override |
| public void onSendFinished(PendingIntent pendingIntent, Intent intent, int resultCode, |
| String resultData, Bundle resultExtras) { |
| if (DBG) log("Finished sending " + pendingIntent); |
| mPendingIntentWakeLock.release(); |
| // Release with a delay so the receiving client has an opportunity to put in its |
| // own request. |
| releasePendingNetworkRequestWithDelay(pendingIntent); |
| } |
| |
| private void callCallbackForRequest(NetworkRequestInfo nri, |
| NetworkAgentInfo networkAgent, int notificationType, int arg1) { |
| if (nri.messenger == null) { |
| // Default request has no msgr. Also prevents callbacks from being invoked for |
| // NetworkRequestInfos registered with ConnectivityDiagnostics requests. Those callbacks |
| // are Type.LISTEN, but should not have NetworkCallbacks invoked. |
| return; |
| } |
| Bundle bundle = new Bundle(); |
| // TODO: check if defensive copies of data is needed. |
| putParcelable(bundle, new NetworkRequest(nri.request)); |
| Message msg = Message.obtain(); |
| if (notificationType != ConnectivityManager.CALLBACK_UNAVAIL) { |
| putParcelable(bundle, networkAgent.network); |
| } |
| switch (notificationType) { |
| case ConnectivityManager.CALLBACK_AVAILABLE: { |
| putParcelable(bundle, networkCapabilitiesRestrictedForCallerPermissions( |
| networkAgent.networkCapabilities, nri.mPid, nri.mUid)); |
| putParcelable(bundle, linkPropertiesRestrictedForCallerPermissions( |
| networkAgent.linkProperties, nri.mPid, nri.mUid)); |
| // For this notification, arg1 contains the blocked status. |
| msg.arg1 = arg1; |
| break; |
| } |
| case ConnectivityManager.CALLBACK_LOSING: { |
| msg.arg1 = arg1; |
| break; |
| } |
| case ConnectivityManager.CALLBACK_CAP_CHANGED: { |
| // networkAgent can't be null as it has been accessed a few lines above. |
| final NetworkCapabilities nc = networkCapabilitiesRestrictedForCallerPermissions( |
| networkAgent.networkCapabilities, nri.mPid, nri.mUid); |
| putParcelable(bundle, nc); |
| break; |
| } |
| case ConnectivityManager.CALLBACK_IP_CHANGED: { |
| putParcelable(bundle, linkPropertiesRestrictedForCallerPermissions( |
| networkAgent.linkProperties, nri.mPid, nri.mUid)); |
| break; |
| } |
| case ConnectivityManager.CALLBACK_BLK_CHANGED: { |
| maybeLogBlockedStatusChanged(nri, networkAgent.network, arg1 != 0); |
| msg.arg1 = arg1; |
| break; |
| } |
| } |
| msg.what = notificationType; |
| msg.setData(bundle); |
| try { |
| if (VDBG) { |
| String notification = ConnectivityManager.getCallbackName(notificationType); |
| log("sending notification " + notification + " 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 static <T extends Parcelable> void putParcelable(Bundle bundle, T t) { |
| bundle.putParcelable(t.getClass().getSimpleName(), t); |
| } |
| |
| private void teardownUnneededNetwork(NetworkAgentInfo nai) { |
| if (nai.numRequestNetworkRequests() != 0) { |
| for (int i = 0; i < nai.numNetworkRequests(); i++) { |
| NetworkRequest nr = nai.requestAt(i); |
| // Ignore listening requests. |
| if (nr.isListen()) 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.toShortString()); |
| |
| // If we get here it means that the last linger timeout for this network expired. So there |
| // must be no other active linger timers, and we must stop lingering. |
| oldNetwork.clearLingerState(); |
| |
| if (unneeded(oldNetwork, UnneededFor.TEARDOWN)) { |
| // Tear the network down. |
| teardownUnneededNetwork(oldNetwork); |
| } else { |
| // Put the network in the background. |
| updateCapabilities(oldNetwork.getCurrentScore(), oldNetwork, |
| oldNetwork.networkCapabilities); |
| } |
| } |
| |
| private void makeDefault(@Nullable final NetworkAgentInfo newNetwork) { |
| if (DBG) log("Switching to new default network: " + newNetwork); |
| |
| mDefaultNetworkNai = newNetwork; |
| |
| try { |
| if (null != newNetwork) { |
| mNMS.setDefaultNetId(newNetwork.network.netId); |
| } else { |
| mNMS.clearDefaultNetId(); |
| } |
| } catch (Exception e) { |
| loge("Exception setting default network :" + e); |
| } |
| |
| notifyLockdownVpn(newNetwork); |
| handleApplyDefaultProxy(null != newNetwork |
| ? newNetwork.linkProperties.getHttpProxy() : null); |
| updateTcpBufferSizes(null != newNetwork |
| ? newNetwork.linkProperties.getTcpBufferSizes() : null); |
| mDnsManager.setDefaultDnsSystemProperties(null != newNetwork |
| ? newNetwork.linkProperties.getDnsServers() : Collections.EMPTY_LIST); |
| notifyIfacesChangedForNetworkStats(); |
| // Fix up the NetworkCapabilities of any VPNs that don't specify underlying networks. |
| updateAllVpnsCapabilities(); |
| } |
| |
| private void processListenRequests(@NonNull final NetworkAgentInfo nai) { |
| // For consistency with previous behaviour, send onLost callbacks before onAvailable. |
| processNewlyLostListenRequests(nai); |
| notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); |
| processNewlySatisfiedListenRequests(nai); |
| } |
| |
| private void processNewlyLostListenRequests(@NonNull final NetworkAgentInfo nai) { |
| for (NetworkRequestInfo nri : mNetworkRequests.values()) { |
| NetworkRequest nr = nri.request; |
| if (!nr.isListen()) continue; |
| if (nai.isSatisfyingRequest(nr.requestId) && !nai.satisfies(nr)) { |
| nai.removeRequest(nri.request.requestId); |
| callCallbackForRequest(nri, nai, ConnectivityManager.CALLBACK_LOST, 0); |
| } |
| } |
| } |
| |
| private void processNewlySatisfiedListenRequests(@NonNull final NetworkAgentInfo nai) { |
| for (NetworkRequestInfo nri : mNetworkRequests.values()) { |
| NetworkRequest nr = nri.request; |
| if (!nr.isListen()) continue; |
| if (nai.satisfies(nr) && !nai.isSatisfyingRequest(nr.requestId)) { |
| nai.addRequest(nr); |
| notifyNetworkAvailable(nai, nri); |
| } |
| } |
| } |
| |
| // An accumulator class to gather the list of changes that result from a rematch. |
| private static class NetworkReassignment { |
| static class RequestReassignment { |
| @NonNull public final NetworkRequestInfo mRequest; |
| @Nullable public final NetworkAgentInfo mOldNetwork; |
| @Nullable public final NetworkAgentInfo mNewNetwork; |
| RequestReassignment(@NonNull final NetworkRequestInfo request, |
| @Nullable final NetworkAgentInfo oldNetwork, |
| @Nullable final NetworkAgentInfo newNetwork) { |
| mRequest = request; |
| mOldNetwork = oldNetwork; |
| mNewNetwork = newNetwork; |
| } |
| |
| public String toString() { |
| return mRequest.request.requestId + " : " |
| + (null != mOldNetwork ? mOldNetwork.network.netId : "null") |
| + " → " + (null != mNewNetwork ? mNewNetwork.network.netId : "null"); |
| } |
| } |
| |
| @NonNull private final ArrayList<RequestReassignment> mReassignments = new ArrayList<>(); |
| |
| @NonNull Iterable<RequestReassignment> getRequestReassignments() { |
| return mReassignments; |
| } |
| |
| void addRequestReassignment(@NonNull final RequestReassignment reassignment) { |
| if (!Build.IS_USER) { |
| // The code is never supposed to add two reassignments of the same request. Make |
| // sure this stays true, but without imposing this expensive check on all |
| // reassignments on all user devices. |
| for (final RequestReassignment existing : mReassignments) { |
| if (existing.mRequest.equals(reassignment.mRequest)) { |
| throw new IllegalStateException("Trying to reassign [" |
| + reassignment + "] but already have [" |
| + existing + "]"); |
| } |
| } |
| } |
| mReassignments.add(reassignment); |
| } |
| |
| // Will return null if this reassignment does not change the network assigned to |
| // the passed request. |
| @Nullable |
| private RequestReassignment getReassignment(@NonNull final NetworkRequestInfo nri) { |
| for (final RequestReassignment event : getRequestReassignments()) { |
| if (nri == event.mRequest) return event; |
| } |
| return null; |
| } |
| |
| public String toString() { |
| final StringJoiner sj = new StringJoiner(", " /* delimiter */, |
| "NetReassign [" /* prefix */, "]" /* suffix */); |
| if (mReassignments.isEmpty()) return sj.add("no changes").toString(); |
| for (final RequestReassignment rr : getRequestReassignments()) { |
| sj.add(rr.toString()); |
| } |
| return sj.toString(); |
| } |
| |
| public String debugString() { |
| final StringBuilder sb = new StringBuilder(); |
| sb.append("NetworkReassignment :"); |
| if (mReassignments.isEmpty()) return sb.append(" no changes").toString(); |
| for (final RequestReassignment rr : getRequestReassignments()) { |
| sb.append("\n ").append(rr); |
| } |
| return sb.append("\n").toString(); |
| } |
| } |
| |
| private void updateSatisfiersForRematchRequest(@NonNull final NetworkRequestInfo nri, |
| @Nullable final NetworkAgentInfo previousSatisfier, |
| @Nullable final NetworkAgentInfo newSatisfier, |
| final long now) { |
| if (newSatisfier != null) { |
| if (VDBG) log("rematch for " + newSatisfier.toShortString()); |
| if (previousSatisfier != null) { |
| if (VDBG || DDBG) { |
| log(" accepting network in place of " + previousSatisfier.toShortString()); |
| } |
| previousSatisfier.removeRequest(nri.request.requestId); |
| previousSatisfier.lingerRequest(nri.request, now, mLingerDelayMs); |
| } else { |
| if (VDBG || DDBG) log(" accepting network in place of null"); |
| } |
| newSatisfier.unlingerRequest(nri.request); |
| if (!newSatisfier.addRequest(nri.request)) { |
| Slog.wtf(TAG, "BUG: " + newSatisfier.toShortString() + " already has " |
| + nri.request); |
| } |
| } else { |
| if (DBG) { |
| log("Network " + previousSatisfier.toShortString() + " stopped satisfying" |
| + " request " + nri.request.requestId); |
| } |
| previousSatisfier.removeRequest(nri.request.requestId); |
| } |
| nri.mSatisfier = newSatisfier; |
| } |
| |
| @NonNull |
| private NetworkReassignment computeNetworkReassignment() { |
| ensureRunningOnConnectivityServiceThread(); |
| final NetworkReassignment changes = new NetworkReassignment(); |
| |
| // Gather the list of all relevant agents and sort them by score. |
| final ArrayList<NetworkAgentInfo> nais = new ArrayList<>(); |
| for (final NetworkAgentInfo nai : mNetworkAgentInfos.values()) { |
| if (!nai.everConnected) continue; |
| nais.add(nai); |
| } |
| |
| for (final NetworkRequestInfo nri : mNetworkRequests.values()) { |
| if (nri.request.isListen()) continue; |
| final NetworkAgentInfo bestNetwork = mNetworkRanker.getBestNetwork(nri.request, nais); |
| if (bestNetwork != nri.mSatisfier) { |
| // bestNetwork may be null if no network can satisfy this request. |
| changes.addRequestReassignment(new NetworkReassignment.RequestReassignment( |
| nri, nri.mSatisfier, bestNetwork)); |
| } |
| } |
| return changes; |
| } |
| |
| /** |
| * Attempt to rematch all Networks with NetworkRequests. This may result in Networks |
| * being disconnected. |
| */ |
| private void rematchAllNetworksAndRequests() { |
| // TODO: This may be slow, and should be optimized. |
| final long now = SystemClock.elapsedRealtime(); |
| final NetworkReassignment changes = computeNetworkReassignment(); |
| if (VDBG || DDBG) { |
| log(changes.debugString()); |
| } else if (DBG) { |
| log(changes.toString()); // Shorter form, only one line of log |
| } |
| applyNetworkReassignment(changes, now); |
| } |
| |
| private void applyNetworkReassignment(@NonNull final NetworkReassignment changes, |
| final long now) { |
| final Collection<NetworkAgentInfo> nais = mNetworkAgentInfos.values(); |
| |
| // Since most of the time there are only 0 or 1 background networks, it would probably |
| // be more efficient to just use an ArrayList here. TODO : measure performance |
| final ArraySet<NetworkAgentInfo> oldBgNetworks = new ArraySet<>(); |
| for (final NetworkAgentInfo nai : nais) { |
| if (nai.isBackgroundNetwork()) oldBgNetworks.add(nai); |
| } |
| |
| // First, update the lists of satisfied requests in the network agents. This is necessary |
| // because some code later depends on this state to be correct, most prominently computing |
| // the linger status. |
| for (final NetworkReassignment.RequestReassignment event : |
| changes.getRequestReassignments()) { |
| updateSatisfiersForRematchRequest(event.mRequest, event.mOldNetwork, |
| event.mNewNetwork, now); |
| } |
| |
| final NetworkAgentInfo oldDefaultNetwork = getDefaultNetwork(); |
| final NetworkRequestInfo defaultRequestInfo = mNetworkRequests.get(mDefaultRequest); |
| final NetworkReassignment.RequestReassignment reassignment = |
| changes.getReassignment(defaultRequestInfo); |
| final NetworkAgentInfo newDefaultNetwork = |
| null != reassignment ? reassignment.mNewNetwork : oldDefaultNetwork; |
| |
| if (oldDefaultNetwork != newDefaultNetwork) { |
| if (oldDefaultNetwork != null) { |
| mLingerMonitor.noteLingerDefaultNetwork(oldDefaultNetwork, newDefaultNetwork); |
| } |
| updateDataActivityTracking(newDefaultNetwork, oldDefaultNetwork); |
| // Notify system services of the new default. |
| makeDefault(newDefaultNetwork); |
| // Log 0 -> X and Y -> X default network transitions, where X is the new default. |
| mDeps.getMetricsLogger().defaultNetworkMetrics().logDefaultNetworkEvent( |
| now, newDefaultNetwork, oldDefaultNetwork); |
| // Have a new default network, release the transition wakelock in |
| scheduleReleaseNetworkTransitionWakelock(); |
| } |
| |
| // Notify requested networks are available after the default net is switched, but |
| // before LegacyTypeTracker sends legacy broadcasts |
| for (final NetworkReassignment.RequestReassignment event : |
| changes.getRequestReassignments()) { |
| // Tell NetworkProviders about the new score, so they can stop |
| // trying to connect if they know they cannot match it. |
| // TODO - this could get expensive if there are a lot of outstanding requests for this |
| // network. Think of a way to reduce this. Push netid->request mapping to each factory? |
| sendUpdatedScoreToFactories(event.mRequest.request, event.mNewNetwork); |
| |
| if (null != event.mNewNetwork) { |
| notifyNetworkAvailable(event.mNewNetwork, event.mRequest); |
| } else { |
| callCallbackForRequest(event.mRequest, event.mOldNetwork, |
| ConnectivityManager.CALLBACK_LOST, 0); |
| } |
| } |
| |
| // Update the linger state before processing listen callbacks, because the background |
| // computation depends on whether the network is lingering. Don't send the LOSING callbacks |
| // just yet though, because they have to be sent after the listens are processed to keep |
| // backward compatibility. |
| final ArrayList<NetworkAgentInfo> lingeredNetworks = new ArrayList<>(); |
| for (final NetworkAgentInfo nai : nais) { |
| // Rematching may have altered the linger state of some networks, so update all linger |
| // timers. updateLingerState reads the state from the network agent and does nothing |
| // if the state has not changed : the source of truth is controlled with |
| // NetworkAgentInfo#lingerRequest and NetworkAgentInfo#unlingerRequest, which have been |
| // called while rematching the individual networks above. |
| if (updateLingerState(nai, now)) { |
| lingeredNetworks.add(nai); |
| } |
| } |
| |
| for (final NetworkAgentInfo nai : nais) { |
| if (!nai.everConnected) continue; |
| final boolean oldBackground = oldBgNetworks.contains(nai); |
| // Process listen requests and update capabilities if the background state has |
| // changed for this network. For consistency with previous behavior, send onLost |
| // callbacks before onAvailable. |
| processNewlyLostListenRequests(nai); |
| if (oldBackground != nai.isBackgroundNetwork()) { |
| applyBackgroundChangeForRematch(nai); |
| } |
| processNewlySatisfiedListenRequests(nai); |
| } |
| |
| for (final NetworkAgentInfo nai : lingeredNetworks) { |
| notifyNetworkLosing(nai, now); |
| } |
| |
| updateLegacyTypeTrackerAndVpnLockdownForRematch(oldDefaultNetwork, newDefaultNetwork, nais); |
| |
| // Tear down all unneeded networks. |
| for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { |
| if (unneeded(nai, UnneededFor.TEARDOWN)) { |
| if (nai.getLingerExpiry() > 0) { |
| // This network has active linger timers and no requests, but is not |
| // lingering. Linger it. |
| // |
| // One way (the only way?) this can happen if this network is unvalidated |
| // and became unneeded due to another network improving its score to the |
| // point where this network will no longer be able to satisfy any requests |
| // even if it validates. |
| if (updateLingerState(nai, now)) { |
| notifyNetworkLosing(nai, now); |
| } |
| } else { |
| if (DBG) log("Reaping " + nai.toShortString()); |
| teardownUnneededNetwork(nai); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Apply a change in background state resulting from rematching networks with requests. |
| * |
| * During rematch, a network may change background states by starting to satisfy or stopping |
| * to satisfy a foreground request. Listens don't count for this. When a network changes |
| * background states, its capabilities need to be updated and callbacks fired for the |
| * capability change. |
| * |
| * @param nai The network that changed background states |
| */ |
| private void applyBackgroundChangeForRematch(@NonNull final NetworkAgentInfo nai) { |
| final NetworkCapabilities newNc = mixInCapabilities(nai, nai.networkCapabilities); |
| if (Objects.equals(nai.networkCapabilities, newNc)) return; |
| updateNetworkPermissions(nai, newNc); |
| nai.getAndSetNetworkCapabilities(newNc); |
| notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED); |
| } |
| |
| private void updateLegacyTypeTrackerAndVpnLockdownForRematch( |
| @Nullable final NetworkAgentInfo oldDefaultNetwork, |
| @Nullable final NetworkAgentInfo newDefaultNetwork, |
| @NonNull final Collection<NetworkAgentInfo> nais) { |
| if (oldDefaultNetwork != newDefaultNetwork) { |
| // Maintain the illusion : since the legacy API only understands one network at a time, |
| // if the default network changed, apps should see a disconnected broadcast for the |
| // old default network before they see a connected broadcast for the new one. |
| if (oldDefaultNetwork != null) { |
| mLegacyTypeTracker.remove(oldDefaultNetwork.networkInfo.getType(), |
| oldDefaultNetwork, true); |
| } |
| if (newDefaultNetwork != null) { |
| // The new default network can be newly null if and only if the old default |
| // network doesn't satisfy the default request any more because it lost a |
| // capability. |
| mDefaultInetConditionPublished = newDefaultNetwork.lastValidated ? 100 : 0; |
| mLegacyTypeTracker.add(newDefaultNetwork.networkInfo.getType(), newDefaultNetwork); |
| // If the legacy VPN is connected, notifyLockdownVpn may end up sending a broadcast |
| // to reflect the NetworkInfo of this new network. This broadcast has to be sent |
| // after the disconnect broadcasts above, but before the broadcasts sent by the |
| // legacy type tracker below. |
| // TODO : refactor this, it's too complex |
| notifyLockdownVpn(newDefaultNetwork); |
| } |
| } |
| |
| // Now that all the callbacks have been sent, send the legacy network broadcasts |
| // as needed. This is necessary so that legacy requests correctly bind dns |
| // requests to this network. The legacy users are listening for this broadcast |
| // and will generally do a dns request so they can ensureRouteToHost and if |
| // they do that before the callbacks happen they'll use the default network. |
| // |
| // TODO: Is there still a race here? The legacy broadcast will be sent after sending |
| // callbacks, but if apps can receive the broadcast before the callback, they still might |
| // have an inconsistent view of networking. |
| // |
| // This *does* introduce a race where if the user uses the new api |
| // (notification callbacks) and then uses the old api (getNetworkInfo(type)) |
| // they may get old info. Reverse this after the old startUsing api is removed. |
| // This is on top of the multiple intent sequencing referenced in the todo above. |
| for (NetworkAgentInfo nai : nais) { |
| if (nai.everConnected) { |
| addNetworkToLegacyTypeTracker(nai); |
| } |
| } |
| } |
| |
| private void addNetworkToLegacyTypeTracker(@NonNull final NetworkAgentInfo nai) { |
| for (int i = 0; i < nai.numNetworkRequests(); i++) { |
| NetworkRequest nr = nai.requestAt(i); |
| if (nr.legacyType != TYPE_NONE && nr.isRequest()) { |
| // legacy type tracker filters out repeat adds |
| mLegacyTypeTracker.add(nr.legacyType, nai); |
| } |
| } |
| |
| // A VPN generally won't get added to the legacy tracker in the "for (nri)" loop above, |
| // because usually there are no NetworkRequests it satisfies (e.g., mDefaultRequest |
| // wants the NOT_VPN capability, so it will never be satisfied by a VPN). So, add the |
| // newNetwork to the tracker explicitly (it's a no-op if it has already been added). |
| if (nai.isVPN()) { |
| mLegacyTypeTracker.add(TYPE_VPN, nai); |
| } |
| } |
| |
| private void updateInetCondition(NetworkAgentInfo nai) { |
| // Don't bother updating until we've graduated to validated at least once. |
| if (!nai.everValidated) return; |
| // For now only update icons for default connection. |
| // TODO: Update WiFi and cellular icons separately. b/17237507 |
| if (!isDefaultNetwork(nai)) return; |
| |
| int newInetCondition = nai.lastValidated ? 100 : 0; |
| // Don't repeat publish. |
| if (newInetCondition == mDefaultInetConditionPublished) return; |
| |
| mDefaultInetConditionPublished = newInetCondition; |
| sendInetConditionBroadcast(nai.networkInfo); |
| } |
| |
| private void notifyLockdownVpn(NetworkAgentInfo nai) { |
| synchronized (mVpns) { |
| if (mLockdownTracker != null) { |
| if (nai != null && nai.isVPN()) { |
| mLockdownTracker.onVpnStateChanged(nai.networkInfo); |
| } else { |
| mLockdownTracker.onNetworkInfoChanged(); |
| } |
| } |
| } |
| } |
| |
| @NonNull |
| private NetworkInfo mixInInfo(@NonNull final NetworkAgentInfo nai, @NonNull NetworkInfo info) { |
| final NetworkInfo newInfo = new NetworkInfo(info); |
| // The suspended and roaming bits are managed in NetworkCapabilities. |
| final boolean suspended = |
| !nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_SUSPENDED); |
| if (suspended && info.getDetailedState() == NetworkInfo.DetailedState.CONNECTED) { |
| // Only override the state with SUSPENDED if the network is currently in CONNECTED |
| // state. This is because the network could have been suspended before connecting, |
| // or it could be disconnecting while being suspended, and in both these cases |
| // the state should not be overridden. Note that the only detailed state that |
| // maps to State.CONNECTED is DetailedState.CONNECTED, so there is also no need to |
| // worry about multiple different substates of CONNECTED. |
| newInfo.setDetailedState(NetworkInfo.DetailedState.SUSPENDED, info.getReason(), |
| info.getExtraInfo()); |
| } |
| newInfo.setRoaming(!nai.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_ROAMING)); |
| return newInfo; |
| } |
| |
| private void updateNetworkInfo(NetworkAgentInfo networkAgent, NetworkInfo info) { |
| final NetworkInfo newInfo = mixInInfo(networkAgent, info); |
| |
| final NetworkInfo.State state = newInfo.getState(); |
| NetworkInfo oldInfo = null; |
| synchronized (networkAgent) { |
| oldInfo = networkAgent.networkInfo; |
| networkAgent.networkInfo = newInfo; |
| } |
| notifyLockdownVpn(networkAgent); |
| |
| if (DBG) { |
| log(networkAgent.toShortString() + " EVENT_NETWORK_INFO_CHANGED, going from " |
| + oldInfo.getState() + " to " + state); |
| } |
| |
| if (!networkAgent.created |
| && (state == NetworkInfo.State.CONNECTED |
| || (state == NetworkInfo.State.CONNECTING && networkAgent.isVPN()))) { |
| |
| // A network that has just connected has zero requests and is thus a foreground network. |
| networkAgent.networkCapabilities.addCapability(NET_CAPABILITY_FOREGROUND); |
| |
| if (!createNativeNetwork(networkAgent)) return; |
| networkAgent.created = true; |
| } |
| |
| if (!networkAgent.everConnected && state == NetworkInfo.State.CONNECTED) { |
| networkAgent.everConnected = true; |
| |
| if (networkAgent.linkProperties == null) { |
| Slog.wtf(TAG, networkAgent.toShortString() + " connected with null LinkProperties"); |
| } |
| |
| // NetworkCapabilities need to be set before sending the private DNS config to |
| // NetworkMonitor, otherwise NetworkMonitor cannot determine if validation is required. |
| networkAgent.getAndSetNetworkCapabilities(networkAgent.networkCapabilities); |
| |
| handlePerNetworkPrivateDnsConfig(networkAgent, mDnsManager.getPrivateDnsConfig()); |
| updateLinkProperties(networkAgent, new LinkProperties(networkAgent.linkProperties), |
| null); |
| |
| // Until parceled LinkProperties are sent directly to NetworkMonitor, the connect |
| // command must be sent after updating LinkProperties to maximize chances of |
| // NetworkMonitor seeing the correct LinkProperties when starting. |
| // TODO: pass LinkProperties to the NetworkMonitor in the notifyNetworkConnected call. |
| if (networkAgent.networkAgentConfig.acceptPartialConnectivity) { |
| networkAgent.networkMonitor().setAcceptPartialConnectivity(); |
| } |
| networkAgent.networkMonitor().notifyNetworkConnected( |
| networkAgent.linkProperties, networkAgent.networkCapabilities); |
| scheduleUnvalidatedPrompt(networkAgent); |
| |
| // Whether a particular NetworkRequest listen should cause signal strength thresholds to |
| // be communicated to a particular NetworkAgent depends only on the network's immutable, |
| // capabilities, so it only needs to be done once on initial connect, not every time the |
| // network's capabilities change. Note that we do this before rematching the network, |
| // so we could decide to tear it down immediately afterwards. That's fine though - on |
| // disconnection NetworkAgents should stop any signal strength monitoring they have been |
| // doing. |
| updateSignalStrengthThresholds(networkAgent, "CONNECT", null); |
| |
| if (networkAgent.isVPN()) { |
| updateAllVpnsCapabilities(); |
| } |
| |
| // Consider network even though it is not yet validated. |
| rematchAllNetworksAndRequests(); |
| |
| // This has to happen after matching the requests, because callbacks are just requests. |
| notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_PRECHECK); |
| } else if (state == NetworkInfo.State.DISCONNECTED) { |
| networkAgent.asyncChannel.disconnect(); |
| if (networkAgent.isVPN()) { |
| updateUids(networkAgent, networkAgent.networkCapabilities, null); |
| } |
| disconnectAndDestroyNetwork(networkAgent); |
| if (networkAgent.isVPN()) { |
| // As the active or bound network changes for apps, broadcast the default proxy, as |
| // apps may need to update their proxy data. This is called after disconnecting from |
| // VPN to make sure we do not broadcast the old proxy data. |
| // TODO(b/122649188): send the broadcast only to VPN users. |
| mProxyTracker.sendProxyBroadcast(); |
| } |
| } else if (networkAgent.created && (oldInfo.getState() == NetworkInfo.State.SUSPENDED || |
| state == NetworkInfo.State.SUSPENDED)) { |
| mLegacyTypeTracker.update(networkAgent); |
| } |
| } |
| |
| private void updateNetworkScore(NetworkAgentInfo nai, NetworkScore ns) { |
| if (VDBG || DDBG) log("updateNetworkScore for " + nai.toShortString() + " to " + ns); |
| nai.setNetworkScore(ns); |
| rematchAllNetworksAndRequests(); |
| sendUpdatedScoreToFactories(nai); |
| } |
| |
| // Notify only this one new request of the current state. Transfer all the |
| // current state by calling NetworkCapabilities and LinkProperties callbacks |
| // so that callers can be guaranteed to have as close to atomicity in state |
| // transfer as can be supported by this current API. |
| protected void notifyNetworkAvailable(NetworkAgentInfo nai, NetworkRequestInfo nri) { |
| mHandler.removeMessages(EVENT_TIMEOUT_NETWORK_REQUEST, nri); |
| if (nri.mPendingIntent != null) { |
| sendPendingIntentForRequest(nri, nai, ConnectivityManager.CALLBACK_AVAILABLE); |
| // Attempt no subsequent state pushes where intents are involved. |
| return; |
| } |
| |
| final boolean metered = nai.networkCapabilities.isMetered(); |
| final boolean blocked = isUidNetworkingWithVpnBlocked(nri.mUid, mUidRules.get(nri.mUid), |
| metered, mRestrictBackground); |
| callCallbackForRequest(nri, nai, ConnectivityManager.CALLBACK_AVAILABLE, blocked ? 1 : 0); |
| } |
| |
| // Notify the requests on this NAI that the network is now lingered. |
| private void notifyNetworkLosing(@NonNull final NetworkAgentInfo nai, final long now) { |
| final int lingerTime = (int) (nai.getLingerExpiry() - now); |
| notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOSING, lingerTime); |
| } |
| |
| /** |
| * Notify of the blocked state apps with a registered callback matching a given NAI. |
| * |
| * Unlike other callbacks, blocked status is different between each individual uid. So for |
| * any given nai, all requests need to be considered according to the uid who filed it. |
| * |
| * @param nai The target NetworkAgentInfo. |
| * @param oldMetered True if the previous network capabilities is metered. |
| * @param newRestrictBackground True if data saver is enabled. |
| */ |
| private void maybeNotifyNetworkBlocked(NetworkAgentInfo nai, boolean oldMetered, |
| boolean newMetered, boolean oldRestrictBackground, boolean newRestrictBackground) { |
| |
| for (int i = 0; i < nai.numNetworkRequests(); i++) { |
| NetworkRequest nr = nai.requestAt(i); |
| NetworkRequestInfo nri = mNetworkRequests.get(nr); |
| final int uidRules = mUidRules.get(nri.mUid); |
| final boolean oldBlocked, newBlocked; |
| // mVpns lock needs to be hold here to ensure that the active VPN cannot be changed |
| // between these two calls. |
| synchronized (mVpns) { |
| oldBlocked = isUidNetworkingWithVpnBlocked(nri.mUid, uidRules, oldMetered, |
| oldRestrictBackground); |
| newBlocked = isUidNetworkingWithVpnBlocked(nri.mUid, uidRules, newMetered, |
| newRestrictBackground); |
| } |
| if (oldBlocked != newBlocked) { |
| callCallbackForRequest(nri, nai, ConnectivityManager.CALLBACK_BLK_CHANGED, |
| encodeBool(newBlocked)); |
| } |
| } |
| } |
| |
| /** |
| * Notify apps with a given UID of the new blocked state according to new uid rules. |
| * @param uid The uid for which the rules changed. |
| * @param newRules The new rules to apply. |
| */ |
| private void maybeNotifyNetworkBlockedForNewUidRules(int uid, int newRules) { |
| for (final NetworkAgentInfo nai : mNetworkAgentInfos.values()) { |
| final boolean metered = nai.networkCapabilities.isMetered(); |
| final boolean oldBlocked, newBlocked; |
| // TODO: Consider that doze mode or turn on/off battery saver would deliver lots of uid |
| // rules changed event. And this function actually loop through all connected nai and |
| // its requests. It seems that mVpns lock will be grabbed frequently in this case. |
| // Reduce the number of locking or optimize the use of lock are likely needed in future. |
| synchronized (mVpns) { |
| oldBlocked = isUidNetworkingWithVpnBlocked( |
| uid, mUidRules.get(uid), metered, mRestrictBackground); |
| newBlocked = isUidNetworkingWithVpnBlocked( |
| uid, newRules, metered, mRestrictBackground); |
| } |
| if (oldBlocked == newBlocked) { |
| continue; |
| } |
| final int arg = encodeBool(newBlocked); |
| for (int i = 0; i < nai.numNetworkRequests(); i++) { |
| NetworkRequest nr = nai.requestAt(i); |
| NetworkRequestInfo nri = mNetworkRequests.get(nr); |
| if (nri != null && nri.mUid == uid) { |
| callCallbackForRequest(nri, nai, ConnectivityManager.CALLBACK_BLK_CHANGED, arg); |
| } |
| } |
| } |
| } |
| |
| @VisibleForTesting |
| protected void sendLegacyNetworkBroadcast(NetworkAgentInfo nai, DetailedState state, 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 (state != DetailedState.DISCONNECTED) { |
| info.setDetailedState(state, null, info.getExtraInfo()); |
| sendConnectedBroadcast(info); |
| } else { |
| info.setDetailedState(state, info.getReason(), 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.isSatisfyingRequest(mDefaultRequest.requestId)) { |
| newDefaultAgent = getDefaultNetwork(); |
| 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); |
| sendStickyBroadcast(intent); |
| if (newDefaultAgent != null) { |
| sendConnectedBroadcast(newDefaultAgent.networkInfo); |
| } |
| } |
| } |
| |
| protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType, int arg1) { |
| if (VDBG || DDBG) { |
| String notification = ConnectivityManager.getCallbackName(notifyType); |
| log("notifyType " + notification + " for " + networkAgent.toShortString()); |
| } |
| for (int i = 0; i < networkAgent.numNetworkRequests(); i++) { |
| NetworkRequest nr = networkAgent.requestAt(i); |
| NetworkRequestInfo nri = mNetworkRequests.get(nr); |
| if (VDBG) log(" sending notification for " + nr); |
| if (nri.mPendingIntent == null) { |
| callCallbackForRequest(nri, networkAgent, notifyType, arg1); |
| } else { |
| sendPendingIntentForRequest(nri, networkAgent, notifyType); |
| } |
| } |
| } |
| |
| protected void notifyNetworkCallbacks(NetworkAgentInfo networkAgent, int notifyType) { |
| notifyNetworkCallbacks(networkAgent, notifyType, 0); |
| } |
| |
| /** |
| * Returns the list of all interfaces that could be used by network traffic that does not |
| * explicitly specify a network. This includes the default network, but also all VPNs that are |
| * currently connected. |
| * |
| * Must be called on the handler thread. |
| */ |
| private Network[] getDefaultNetworks() { |
| ensureRunningOnConnectivityServiceThread(); |
| ArrayList<Network> defaultNetworks = new ArrayList<>(); |
| NetworkAgentInfo defaultNetwork = getDefaultNetwork(); |
| for (NetworkAgentInfo nai : mNetworkAgentInfos.values()) { |
| if (nai.everConnected && (nai == defaultNetwork || nai.isVPN())) { |
| defaultNetworks.add(nai.network); |
| } |
| } |
| return defaultNetworks.toArray(new Network[0]); |
| } |
| |
| /** |
| * Notify NetworkStatsService that the set of active ifaces has changed, or that one of the |
| * active iface's tracked properties has changed. |
| */ |
| private void notifyIfacesChangedForNetworkStats() { |
| ensureRunningOnConnectivityServiceThread(); |
| String activeIface = null; |
| LinkProperties activeLinkProperties = getActiveLinkProperties(); |
| if (activeLinkProperties != null) { |
| activeIface = activeLinkProperties.getInterfaceName(); |
| } |
| |
| final VpnInfo[] vpnInfos = getAllVpnInfo(); |
| try { |
| mStatsService.forceUpdateIfaces( |
| getDefaultNetworks(), getAllNetworkState(), activeIface, vpnInfos); |
| } catch (Exception ignored) { |
| } |
| } |
| |
| @Override |
| public boolean addVpnAddress(String address, int prefixLength) { |
| int user = UserHandle.getUserId(Binder.getCallingUid()); |
| synchronized (mVpns) { |
| throwIfLockdownEnabled(); |
| return mVpns.get(user).addAddress(address, prefixLength); |
| } |
| } |
| |
| @Override |
| public boolean removeVpnAddress(String address, int prefixLength) { |
| int user = UserHandle.getUserId(Binder.getCallingUid()); |
| synchronized (mVpns) { |
| throwIfLockdownEnabled(); |
| return mVpns.get(user).removeAddress(address, prefixLength); |
| } |
| } |
| |
| @Override |
| public boolean setUnderlyingNetworksForVpn(Network[] networks) { |
| int user = UserHandle.getUserId(Binder.getCallingUid()); |
| final boolean success; |
| synchronized (mVpns) { |
| throwIfLockdownEnabled(); |
| success = mVpns.get(user).setUnderlyingNetworks(networks); |
| } |
| if (success) { |
| mHandler.post(() -> { |
| // Update VPN's capabilities based on updated underlying network set. |
| updateAllVpnsCapabilities(); |
| notifyIfacesChangedForNetworkStats(); |
| }); |
| } |
| return success; |
| } |
| |
| @Override |
| public String getCaptivePortalServerUrl() { |
| enforceNetworkStackOrSettingsPermission(); |
| String settingUrl = mContext.getResources().getString( |
| R.string.config_networkCaptivePortalServerUrl); |
| |
| if (!TextUtils.isEmpty(settingUrl)) { |
| return settingUrl; |
| } |
| |
| settingUrl = Settings.Global.getString(mContext.getContentResolver(), |
| Settings.Global.CAPTIVE_PORTAL_HTTP_URL); |
| if (!TextUtils.isEmpty(settingUrl)) { |
| return settingUrl; |
| } |
| |
| return DEFAULT_CAPTIVE_PORTAL_HTTP_URL; |
| } |
| |
| @Override |
| public void startNattKeepalive(Network network, int intervalSeconds, |
| ISocketKeepaliveCallback cb, String srcAddr, int srcPort, String dstAddr) { |
| enforceKeepalivePermission(); |
| mKeepaliveTracker.startNattKeepalive( |
| getNetworkAgentInfoForNetwork(network), null /* fd */, |
| intervalSeconds, cb, |
| srcAddr, srcPort, dstAddr, NattSocketKeepalive.NATT_PORT); |
| } |
| |
| @Override |
| public void startNattKeepaliveWithFd(Network network, FileDescriptor fd, int resourceId, |
| int intervalSeconds, ISocketKeepaliveCallback cb, String srcAddr, |
| String dstAddr) { |
| mKeepaliveTracker.startNattKeepalive( |
| getNetworkAgentInfoForNetwork(network), fd, resourceId, |
| intervalSeconds, cb, |
| srcAddr, dstAddr, NattSocketKeepalive.NATT_PORT); |
| } |
| |
| @Override |
| public void startTcpKeepalive(Network network, FileDescriptor fd, int intervalSeconds, |
| ISocketKeepaliveCallback cb) { |
| enforceKeepalivePermission(); |
| mKeepaliveTracker.startTcpKeepalive( |
| getNetworkAgentInfoForNetwork(network), fd, intervalSeconds, cb); |
| } |
| |
| @Override |
| public void stopKeepalive(Network network, int slot) { |
| mHandler.sendMessage(mHandler.obtainMessage( |
| NetworkAgent.CMD_STOP_SOCKET_KEEPALIVE, slot, SocketKeepalive.SUCCESS, network)); |
| } |
| |
| @Override |
| public void factoryReset() { |
| enforceSettingsPermission(); |
| |
| if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) { |
| return; |
| } |
| |
| final int userId = UserHandle.getCallingUserId(); |
| |
| Binder.withCleanCallingIdentity(() -> { |
| final IpMemoryStore ipMemoryStore = IpMemoryStore.getMemoryStore(mContext); |
| ipMemoryStore.factoryReset(); |
| }); |
| |
| // Turn airplane mode off |
| setAirplaneMode(false); |
| |
| if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_VPN)) { |
| // Remove always-on package |
| synchronized (mVpns) { |
| final String alwaysOnPackage = getAlwaysOnVpnPackage(userId); |
| if (alwaysOnPackage != null) { |
| setAlwaysOnVpnPackage(userId, null, false, null); |
| setVpnPackageAuthorization(alwaysOnPackage, userId, VpnManager.TYPE_VPN_NONE); |
| } |
| |
| // Turn Always-on VPN off |
| if (mLockdownEnabled && userId == UserHandle.USER_SYSTEM) { |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| mKeyStore.delete(Credentials.LOCKDOWN_VPN); |
| mLockdownEnabled = false; |
| setLockdownTracker(null); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| // Turn VPN off |
| VpnConfig vpnConfig = getVpnConfig(userId); |
| if (vpnConfig != null) { |
| if (vpnConfig.legacy) { |
| prepareVpn(VpnConfig.LEGACY_VPN, VpnConfig.LEGACY_VPN, userId); |
| } else { |
| // Prevent this app (packagename = vpnConfig.user) from initiating |
| // VPN connections in the future without user intervention. |
| setVpnPackageAuthorization( |
| vpnConfig.user, userId, VpnManager.TYPE_VPN_NONE); |
| |
| prepareVpn(null, VpnConfig.LEGACY_VPN, userId); |
| } |
| } |
| } |
| } |
| |
| // restore private DNS settings to default mode (opportunistic) |
| if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_PRIVATE_DNS)) { |
| Settings.Global.putString(mContext.getContentResolver(), |
| Settings.Global.PRIVATE_DNS_MODE, PRIVATE_DNS_MODE_OPPORTUNISTIC); |
| } |
| |
| Settings.Global.putString(mContext.getContentResolver(), |
| Settings.Global.NETWORK_AVOID_BAD_WIFI, null); |
| } |
| |
| @Override |
| public byte[] getNetworkWatchlistConfigHash() { |
| NetworkWatchlistManager nwm = mContext.getSystemService(NetworkWatchlistManager.class); |
| if (nwm == null) { |
| loge("Unable to get NetworkWatchlistManager"); |
| return null; |
| } |
| // Redirect it to network watchlist service to access watchlist file and calculate hash. |
| return nwm.getWatchlistConfigHash(); |
| } |
| |
| private void logNetworkEvent(NetworkAgentInfo nai, int evtype) { |
| int[] transports = nai.networkCapabilities.getTransportTypes(); |
| mMetricsLog.log(nai.network.netId, transports, new NetworkEvent(evtype)); |
| } |
| |
| private static boolean toBool(int encodedBoolean) { |
| return encodedBoolean != 0; // Only 0 means false. |
| } |
| |
| private static int encodeBool(boolean b) { |
| return b ? 1 : 0; |
| } |
| |
| @Override |
| public void onShellCommand(@NonNull FileDescriptor in, @NonNull FileDescriptor out, |
| FileDescriptor err, @NonNull String[] args, ShellCallback callback, |
| @NonNull ResultReceiver resultReceiver) { |
| (new ShellCmd()).exec(this, in, out, err, args, callback, resultReceiver); |
| } |
| |
| private class ShellCmd extends ShellCommand { |
| |
| @Override |
| public int onCommand(String cmd) { |
| if (cmd == null) { |
| return handleDefaultCommands(cmd); |
| } |
| final PrintWriter pw = getOutPrintWriter(); |
| try { |
| switch (cmd) { |
| case "airplane-mode": |
| final String action = getNextArg(); |
| if ("enable".equals(action)) { |
| setAirplaneMode(true); |
| return 0; |
| } else if ("disable".equals(action)) { |
| setAirplaneMode(false); |
| return 0; |
| } else if (action == null) { |
| final ContentResolver cr = mContext.getContentResolver(); |
| final int enabled = Settings.Global.getInt(cr, |
| Settings.Global.AIRPLANE_MODE_ON); |
| pw.println(enabled == 0 ? "disabled" : "enabled"); |
| return 0; |
| } else { |
| onHelp(); |
| return -1; |
| } |
| default: |
| return handleDefaultCommands(cmd); |
| } |
| } catch (Exception e) { |
| pw.println(e); |
| } |
| return -1; |
| } |
| |
| @Override |
| public void onHelp() { |
| PrintWriter pw = getOutPrintWriter(); |
| pw.println("Connectivity service commands:"); |
| pw.println(" help"); |
| pw.println(" Print this help text."); |
| pw.println(" airplane-mode [enable|disable]"); |
| pw.println(" Turn airplane mode on or off."); |
| pw.println(" airplane-mode"); |
| pw.println(" Get airplane mode."); |
| } |
| } |
| |
| @GuardedBy("mVpns") |
| private Vpn getVpnIfOwner() { |
| return getVpnIfOwner(Binder.getCallingUid()); |
| } |
| |
| @GuardedBy("mVpns") |
| private Vpn getVpnIfOwner(int uid) { |
| final int user = UserHandle.getUserId(uid); |
| |
| final Vpn vpn = mVpns.get(user); |
| if (vpn == null) { |
| return null; |
| } else { |
| final VpnInfo info = vpn.getVpnInfo(); |
| return (info == null || info.ownerUid != uid) ? null : vpn; |
| } |
| } |
| |
| /** |
| * Caller either needs to be an active VPN, or hold the NETWORK_STACK permission |
| * for testing. |
| */ |
| private Vpn enforceActiveVpnOrNetworkStackPermission() { |
| if (checkNetworkStackPermission()) { |
| return null; |
| } |
| synchronized (mVpns) { |
| Vpn vpn = getVpnIfOwner(); |
| if (vpn != null) { |
| return vpn; |
| } |
| } |
| throw new SecurityException("App must either be an active VPN or have the NETWORK_STACK " |
| + "permission"); |
| } |
| |
| /** |
| * @param connectionInfo the connection to resolve. |
| * @return {@code uid} if the connection is found and the app has permission to observe it |
| * (e.g., if it is associated with the calling VPN app's tunnel) or {@code INVALID_UID} if the |
| * connection is not found. |
| */ |
| public int getConnectionOwnerUid(ConnectionInfo connectionInfo) { |
| final Vpn vpn = enforceActiveVpnOrNetworkStackPermission(); |
| if (connectionInfo.protocol != IPPROTO_TCP && connectionInfo.protocol != IPPROTO_UDP) { |
| throw new IllegalArgumentException("Unsupported protocol " + connectionInfo.protocol); |
| } |
| |
| final int uid = InetDiagMessage.getConnectionOwnerUid(connectionInfo.protocol, |
| connectionInfo.local, connectionInfo.remote); |
| |
| /* Filter out Uids not associated with the VPN. */ |
| if (vpn != null && !vpn.appliesToUid(uid)) { |
| return INVALID_UID; |
| } |
| |
| return uid; |
| } |
| |
| @Override |
| public boolean isCallerCurrentAlwaysOnVpnApp() { |
| synchronized (mVpns) { |
| Vpn vpn = getVpnIfOwner(); |
| return vpn != null && vpn.getAlwaysOn(); |
| } |
| } |
| |
| @Override |
| public boolean isCallerCurrentAlwaysOnVpnLockdownApp() { |
| synchronized (mVpns) { |
| Vpn vpn = getVpnIfOwner(); |
| return vpn != null && vpn.getLockdown(); |
| } |
| } |
| |
| /** |
| * Returns a IBinder to a TestNetworkService. Will be lazily created as needed. |
| * |
| * <p>The TestNetworkService must be run in the system server due to TUN creation. |
| */ |
| @Override |
| public IBinder startOrGetTestNetworkService() { |
| synchronized (mTNSLock) { |
| TestNetworkService.enforceTestNetworkPermissions(mContext); |
| |
| if (mTNS == null) { |
| mTNS = new TestNetworkService(mContext, mNMS); |
| } |
| |
| return mTNS; |
| } |
| } |
| |
| /** |
| * Handler used for managing all Connectivity Diagnostics related functions. |
| * |
| * @see android.net.ConnectivityDiagnosticsManager |
| * |
| * TODO(b/147816404): Explore moving ConnectivityDiagnosticsHandler to a separate file |
| */ |
| @VisibleForTesting |
| class ConnectivityDiagnosticsHandler extends Handler { |
| private final String mTag = ConnectivityDiagnosticsHandler.class.getSimpleName(); |
| |
| /** |
| * Used to handle ConnectivityDiagnosticsCallback registration events from {@link |
| * android.net.ConnectivityDiagnosticsManager}. |
| * obj = ConnectivityDiagnosticsCallbackInfo with IConnectivityDiagnosticsCallback and |
| * NetworkRequestInfo to be registered |
| */ |
| private static final int EVENT_REGISTER_CONNECTIVITY_DIAGNOSTICS_CALLBACK = 1; |
| |
| /** |
| * Used to handle ConnectivityDiagnosticsCallback unregister events from {@link |
| * android.net.ConnectivityDiagnosticsManager}. |
| * obj = the IConnectivityDiagnosticsCallback to be unregistered |
| * arg1 = the uid of the caller |
| */ |
| private static final int EVENT_UNREGISTER_CONNECTIVITY_DIAGNOSTICS_CALLBACK = 2; |
| |
| /** |
| * Event for {@link NetworkStateTrackerHandler} to trigger ConnectivityReport callbacks |
| * after processing {@link #EVENT_NETWORK_TESTED} events. |
| * obj = {@link ConnectivityReportEvent} representing ConnectivityReport info reported from |
| * NetworkMonitor. |
| * data = PersistableBundle of extras passed from NetworkMonitor. |
| * |
| * <p>See {@link ConnectivityService#EVENT_NETWORK_TESTED}. |
| */ |
| private static final int EVENT_NETWORK_TESTED = ConnectivityService.EVENT_NETWORK_TESTED; |
| |
| /** |
| * Event for NetworkMonitor to inform ConnectivityService that a potential data stall has |
| * been detected on the network. |
| * obj = Long the timestamp (in millis) for when the suspected data stall was detected. |
| * arg1 = {@link DataStallReport#DetectionMethod} indicating the detection method. |
| * arg2 = NetID. |
| * data = PersistableBundle of extras passed from NetworkMonitor. |
| */ |
| private static final int EVENT_DATA_STALL_SUSPECTED = 4; |
| |
| /** |
| * Event for ConnectivityDiagnosticsHandler to handle network connectivity being reported to |
| * the platform. This event will invoke {@link |
| * IConnectivityDiagnosticsCallback#onNetworkConnectivityReported} for permissioned |
| * callbacks. |
| * obj = Network that was reported on |
| * arg1 = boolint for the quality reported |
| */ |
| private static final int EVENT_NETWORK_CONNECTIVITY_REPORTED = 5; |
| |
| private ConnectivityDiagnosticsHandler(Looper looper) { |
| super(looper); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch (msg.what) { |
| case EVENT_REGISTER_CONNECTIVITY_DIAGNOSTICS_CALLBACK: { |
| handleRegisterConnectivityDiagnosticsCallback( |
| (ConnectivityDiagnosticsCallbackInfo) msg.obj); |
| break; |
| } |
| case EVENT_UNREGISTER_CONNECTIVITY_DIAGNOSTICS_CALLBACK: { |
| handleUnregisterConnectivityDiagnosticsCallback( |
| (IConnectivityDiagnosticsCallback) msg.obj, msg.arg1); |
| break; |
| } |
| case EVENT_NETWORK_TESTED: { |
| final ConnectivityReportEvent reportEvent = |
| (ConnectivityReportEvent) msg.obj; |
| |
| // This is safe because {@link |
| // NetworkMonitorCallbacks#notifyNetworkTestedWithExtras} receives a |
| // PersistableBundle and converts it to the Bundle in the incoming Message. If |
| // {@link NetworkMonitorCallbacks#notifyNetworkTested} is called, msg.data will |
| // not be set. This is also safe, as msg.getData() will return an empty Bundle. |
| final PersistableBundle extras = new PersistableBundle(msg.getData()); |
| handleNetworkTestedWithExtras(reportEvent, extras); |
| break; |
| } |
| case EVENT_DATA_STALL_SUSPECTED: { |
| final NetworkAgentInfo nai = getNetworkAgentInfoForNetId(msg.arg2); |
| if (nai == null) break; |
| |
| // This is safe because NetworkMonitorCallbacks#notifyDataStallSuspected |
| // receives a PersistableBundle and converts it to the Bundle in the incoming |
| // Message. |
| final PersistableBundle extras = new PersistableBundle(msg.getData()); |
| handleDataStallSuspected(nai, (long) msg.obj, msg.arg1, extras); |
| break; |
| } |
| case EVENT_NETWORK_CONNECTIVITY_REPORTED: { |
| handleNetworkConnectivityReported((NetworkAgentInfo) msg.obj, toBool(msg.arg1)); |
| break; |
| } |
| default: { |
| Log.e(mTag, "Unrecognized event in ConnectivityDiagnostics: " + msg.what); |
| } |
| } |
| } |
| } |
| |
| /** Class used for cleaning up IConnectivityDiagnosticsCallback instances after their death. */ |
| @VisibleForTesting |
| class ConnectivityDiagnosticsCallbackInfo implements Binder.DeathRecipient { |
| @NonNull private final IConnectivityDiagnosticsCallback mCb; |
| @NonNull private final NetworkRequestInfo mRequestInfo; |
| @NonNull private final String mCallingPackageName; |
| |
| @VisibleForTesting |
| ConnectivityDiagnosticsCallbackInfo( |
| @NonNull IConnectivityDiagnosticsCallback cb, |
| @NonNull NetworkRequestInfo nri, |
| @NonNull String callingPackageName) { |
| mCb = cb; |
| mRequestInfo = nri; |
| mCallingPackageName = callingPackageName; |
| } |
| |
| @Override |
| public void binderDied() { |
| log("ConnectivityDiagnosticsCallback IBinder died."); |
| unregisterConnectivityDiagnosticsCallback(mCb); |
| } |
| } |
| |
| /** |
| * Class used for sending information from {@link |
| * NetworkMonitorCallbacks#notifyNetworkTestedWithExtras} to the handler for processing it. |
| */ |
| private static class NetworkTestedResults { |
| private final int mNetId; |
| private final int mTestResult; |
| private final long mTimestampMillis; |
| @Nullable private final String mRedirectUrl; |
| |
| private NetworkTestedResults( |
| int netId, int testResult, long timestampMillis, @Nullable String redirectUrl) { |
| mNetId = netId; |
| mTestResult = testResult; |
| mTimestampMillis = timestampMillis; |
| mRedirectUrl = redirectUrl; |
| } |
| } |
| |
| /** |
| * Class used for sending information from {@link NetworkStateTrackerHandler} to {@link |
| * ConnectivityDiagnosticsHandler}. |
| */ |
| private static class ConnectivityReportEvent { |
| private final long mTimestampMillis; |
| @NonNull private final NetworkAgentInfo mNai; |
| |
| private ConnectivityReportEvent(long timestampMillis, @NonNull NetworkAgentInfo nai) { |
| mTimestampMillis = timestampMillis; |
| mNai = nai; |
| } |
| } |
| |
| private void handleRegisterConnectivityDiagnosticsCallback( |
| @NonNull ConnectivityDiagnosticsCallbackInfo cbInfo) { |
| ensureRunningOnConnectivityServiceThread(); |
| |
| final IConnectivityDiagnosticsCallback cb = cbInfo.mCb; |
| final NetworkRequestInfo nri = cbInfo.mRequestInfo; |
| |
| // This means that the client registered the same callback multiple times. Do |
| // not override the previous entry, and exit silently. |
| if (mConnectivityDiagnosticsCallbacks.containsKey(cb)) { |
| if (VDBG) log("Diagnostics callback is already registered"); |
| |
| // Decrement the reference count for this NetworkRequestInfo. The reference count is |
| // incremented when the NetworkRequestInfo is created as part of |
| // enforceRequestCountLimit(). |
| decrementNetworkRequestPerUidCount(nri); |
| return; |
| } |
| |
| mConnectivityDiagnosticsCallbacks.put(cb, cbInfo); |
| |
| try { |
| cb.asBinder().linkToDeath(cbInfo, 0); |
| } catch (RemoteException e) { |
| cbInfo.binderDied(); |
| } |
| } |
| |
| private void handleUnregisterConnectivityDiagnosticsCallback( |
| @NonNull IConnectivityDiagnosticsCallback cb, int uid) { |
| ensureRunningOnConnectivityServiceThread(); |
| |
| if (!mConnectivityDiagnosticsCallbacks.containsKey(cb)) { |
| if (VDBG) log("Removing diagnostics callback that is not currently registered"); |
| return; |
| } |
| |
| final NetworkRequestInfo nri = mConnectivityDiagnosticsCallbacks.get(cb).mRequestInfo; |
| |
| if (uid != nri.mUid) { |
| if (VDBG) loge("Different uid than registrant attempting to unregister cb"); |
| return; |
| } |
| |
| cb.asBinder().unlinkToDeath(mConnectivityDiagnosticsCallbacks.remove(cb), 0); |
| } |
| |
| private void handleNetworkTestedWithExtras( |
| @NonNull ConnectivityReportEvent reportEvent, @NonNull PersistableBundle extras) { |
| final NetworkAgentInfo nai = reportEvent.mNai; |
| final ConnectivityReport report = |
| new ConnectivityReport( |
| reportEvent.mNai.network, |
| reportEvent.mTimestampMillis, |
| nai.linkProperties, |
| nai.networkCapabilities, |
| extras); |
| final List<IConnectivityDiagnosticsCallback> results = |
| getMatchingPermissionedCallbacks(nai); |
| for (final IConnectivityDiagnosticsCallback cb : results) { |
| try { |
| cb.onConnectivityReport(report); |
| } catch (RemoteException ex) { |
| loge("Error invoking onConnectivityReport", ex); |
| } |
| } |
| } |
| |
| private void handleDataStallSuspected( |
| @NonNull NetworkAgentInfo nai, long timestampMillis, int detectionMethod, |
| @NonNull PersistableBundle extras) { |
| final DataStallReport report = |
| new DataStallReport( |
| nai.network, |
| timestampMillis, |
| detectionMethod, |
| nai.linkProperties, |
| nai.networkCapabilities, |
| extras); |
| final List<IConnectivityDiagnosticsCallback> results = |
| getMatchingPermissionedCallbacks(nai); |
| for (final IConnectivityDiagnosticsCallback cb : results) { |
| try { |
| cb.onDataStallSuspected(report); |
| } catch (RemoteException ex) { |
| loge("Error invoking onDataStallSuspected", ex); |
| } |
| } |
| } |
| |
| private void handleNetworkConnectivityReported( |
| @NonNull NetworkAgentInfo nai, boolean connectivity) { |
| final List<IConnectivityDiagnosticsCallback> results = |
| getMatchingPermissionedCallbacks(nai); |
| for (final IConnectivityDiagnosticsCallback cb : results) { |
| try { |
| cb.onNetworkConnectivityReported(nai.network, connectivity); |
| } catch (RemoteException ex) { |
| loge("Error invoking onNetworkConnectivityReported", ex); |
| } |
| } |
| } |
| |
| private List<IConnectivityDiagnosticsCallback> getMatchingPermissionedCallbacks( |
| @NonNull NetworkAgentInfo nai) { |
| final List<IConnectivityDiagnosticsCallback> results = new ArrayList<>(); |
| for (Entry<IConnectivityDiagnosticsCallback, ConnectivityDiagnosticsCallbackInfo> entry : |
| mConnectivityDiagnosticsCallbacks.entrySet()) { |
| final ConnectivityDiagnosticsCallbackInfo cbInfo = entry.getValue(); |
| final NetworkRequestInfo nri = cbInfo.mRequestInfo; |
| if (nai.satisfies(nri.request)) { |
| if (checkConnectivityDiagnosticsPermissions( |
| nri.mPid, nri.mUid, nai, cbInfo.mCallingPackageName)) { |
| results.add(entry.getKey()); |
| } |
| } |
| } |
| return results; |
| } |
| |
| @VisibleForTesting |
| boolean checkConnectivityDiagnosticsPermissions( |
| int callbackPid, int callbackUid, NetworkAgentInfo nai, String callbackPackageName) { |
| if (checkNetworkStackPermission(callbackPid, callbackUid)) { |
| return true; |
| } |
| |
| if (!mLocationPermissionChecker.checkLocationPermission( |
| callbackPackageName, null /* featureId */, callbackUid, null /* message */)) { |
| return false; |
| } |
| |
| synchronized (mVpns) { |
| if (getVpnIfOwner(callbackUid) != null) { |
| return true; |
| } |
| } |
| |
| // Administrator UIDs also contains the Owner UID |
| if (nai.networkCapabilities.getAdministratorUids().contains(callbackUid)) { |
| return true; |
| } |
| |
| return false; |
| } |
| |
| @Override |
| public void registerConnectivityDiagnosticsCallback( |
| @NonNull IConnectivityDiagnosticsCallback callback, |
| @NonNull NetworkRequest request, |
| @NonNull String callingPackageName) { |
| if (request.legacyType != TYPE_NONE) { |
| throw new IllegalArgumentException("ConnectivityManager.TYPE_* are deprecated." |
| + " Please use NetworkCapabilities instead."); |
| } |
| final int callingUid = Binder.getCallingUid(); |
| mAppOpsManager.checkPackage(callingUid, callingPackageName); |
| |
| // This NetworkCapabilities is only used for matching to Networks. Clear out its owner uid |
| // and administrator uids to be safe. |
| final NetworkCapabilities nc = new NetworkCapabilities(request.networkCapabilities); |
| restrictRequestUidsForCallerAndSetRequestorInfo(nc, callingUid, callingPackageName); |
| |
| final NetworkRequest requestWithId = |
| new NetworkRequest( |
| nc, TYPE_NONE, nextNetworkRequestId(), NetworkRequest.Type.LISTEN); |
| |
| // NetworkRequestInfos created here count towards MAX_NETWORK_REQUESTS_PER_UID limit. |
| // |
| // nri is not bound to the death of callback. Instead, callback.bindToDeath() is set in |
| // handleRegisterConnectivityDiagnosticsCallback(). nri will be cleaned up as part of the |
| // callback's binder death. |
| final NetworkRequestInfo nri = new NetworkRequestInfo(requestWithId); |
| final ConnectivityDiagnosticsCallbackInfo cbInfo = |
| new ConnectivityDiagnosticsCallbackInfo(callback, nri, callingPackageName); |
| |
| mConnectivityDiagnosticsHandler.sendMessage( |
| mConnectivityDiagnosticsHandler.obtainMessage( |
| ConnectivityDiagnosticsHandler |
| .EVENT_REGISTER_CONNECTIVITY_DIAGNOSTICS_CALLBACK, |
| cbInfo)); |
| } |
| |
| @Override |
| public void unregisterConnectivityDiagnosticsCallback( |
| @NonNull IConnectivityDiagnosticsCallback callback) { |
| mConnectivityDiagnosticsHandler.sendMessage( |
| mConnectivityDiagnosticsHandler.obtainMessage( |
| ConnectivityDiagnosticsHandler |
| .EVENT_UNREGISTER_CONNECTIVITY_DIAGNOSTICS_CALLBACK, |
| Binder.getCallingUid(), |
| 0, |
| callback)); |
| } |
| } |