/* * Copyright (C) 2010 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.wifi; import static android.net.util.KeepalivePacketDataUtil.parseTcpKeepalivePacketData; import static android.net.wifi.WifiConfiguration.NetworkSelectionStatus.DISABLED_NO_INTERNET_PERMANENT; import static android.net.wifi.WifiConfiguration.NetworkSelectionStatus.DISABLED_NO_INTERNET_TEMPORARY; import static android.net.wifi.WifiManager.WIFI_FEATURE_FILS_SHA256; import static android.net.wifi.WifiManager.WIFI_FEATURE_FILS_SHA384; import static com.android.server.wifi.ActiveModeManager.ROLE_CLIENT_PRIMARY; import static com.android.server.wifi.ActiveModeManager.ROLE_CLIENT_SECONDARY_LONG_LIVED; import static com.android.server.wifi.ActiveModeManager.ROLE_CLIENT_SECONDARY_TRANSIENT; import static com.android.server.wifi.WifiSettingsConfigStore.WIFI_STA_FACTORY_MAC_ADDRESS; import static com.android.server.wifi.proto.WifiStatsLog.WIFI_DISCONNECT_REPORTED__FAILURE_CODE__SUPPLICANT_DISCONNECTED; import android.annotation.IntDef; import android.annotation.NonNull; import android.annotation.Nullable; import android.app.ActivityManager; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.hardware.wifi.supplicant.V1_0.ISupplicantStaIfaceCallback.ReasonCode; import android.hardware.wifi.supplicant.V1_0.ISupplicantStaIfaceCallback.StatusCode; import android.net.CaptivePortalData; import android.net.ConnectivityManager; import android.net.DhcpResultsParcelable; import android.net.InvalidPacketException; import android.net.IpConfiguration; import android.net.KeepalivePacketData; import android.net.Layer2PacketParcelable; import android.net.LinkProperties; import android.net.MacAddress; import android.net.NattKeepalivePacketData; import android.net.Network; import android.net.NetworkAgent; import android.net.NetworkAgentConfig; import android.net.NetworkCapabilities; import android.net.NetworkInfo; import android.net.NetworkInfo.DetailedState; import android.net.RouteInfo; import android.net.SocketKeepalive; import android.net.StaticIpConfiguration; import android.net.TcpKeepalivePacketData; import android.net.TcpKeepalivePacketDataParcelable; import android.net.Uri; import android.net.ip.IIpClient; import android.net.ip.IpClientCallbacks; import android.net.ip.IpClientManager; import android.net.shared.Layer2Information; import android.net.shared.ProvisioningConfiguration; import android.net.shared.ProvisioningConfiguration.ScanResultInfo; import android.net.vcn.VcnManager; import android.net.vcn.VcnNetworkPolicyResult; import android.net.wifi.IWifiConnectedNetworkScorer; import android.net.wifi.ScanResult; import android.net.wifi.SecurityParams; import android.net.wifi.SupplicantState; import android.net.wifi.WifiAnnotations.WifiStandard; import android.net.wifi.WifiConfiguration; import android.net.wifi.WifiEnterpriseConfig; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.net.wifi.WifiNetworkAgentSpecifier; import android.net.wifi.WifiNetworkSpecifier; import android.net.wifi.hotspot2.IProvisioningCallback; import android.net.wifi.hotspot2.OsuProvider; import android.net.wifi.nl80211.DeviceWiphyCapabilities; import android.net.wifi.nl80211.WifiNl80211Manager; import android.os.BatteryStatsManager; import android.os.Build; import android.os.ConditionVariable; import android.os.HandlerExecutor; import android.os.IBinder; import android.os.Looper; import android.os.Message; import android.os.Messenger; import android.os.PowerManager; import android.os.Process; import android.os.UserHandle; import android.os.WorkSource; import android.provider.Settings; import android.system.OsConstants; import android.telephony.SubscriptionManager; import android.telephony.TelephonyManager; import android.text.TextUtils; import android.util.ArraySet; import android.util.Log; import android.util.Pair; import androidx.annotation.RequiresApi; import com.android.internal.annotations.VisibleForTesting; import com.android.internal.util.IState; import com.android.internal.util.Protocol; import com.android.internal.util.State; import com.android.internal.util.StateMachine; import com.android.modules.utils.build.SdkLevel; import com.android.net.module.util.Inet4AddressUtils; import com.android.net.module.util.MacAddressUtils; import com.android.net.module.util.NetUtils; import com.android.server.wifi.ActiveModeManager.ClientRole; import com.android.server.wifi.MboOceController.BtmFrameData; import com.android.server.wifi.WifiCarrierInfoManager.SimAuthRequestData; import com.android.server.wifi.WifiCarrierInfoManager.SimAuthResponseData; import com.android.server.wifi.WifiNative.RxFateReport; import com.android.server.wifi.WifiNative.TxFateReport; import com.android.server.wifi.hotspot2.AnqpEvent; import com.android.server.wifi.hotspot2.IconEvent; import com.android.server.wifi.hotspot2.NetworkDetail; import com.android.server.wifi.hotspot2.PasspointManager; import com.android.server.wifi.hotspot2.WnmData; import com.android.server.wifi.p2p.WifiP2pServiceImpl; import com.android.server.wifi.proto.WifiStatsLog; import com.android.server.wifi.proto.nano.WifiMetricsProto; import com.android.server.wifi.proto.nano.WifiMetricsProto.StaEvent; import com.android.server.wifi.proto.nano.WifiMetricsProto.WifiIsUnusableEvent; import com.android.server.wifi.proto.nano.WifiMetricsProto.WifiUsabilityStats; import com.android.server.wifi.util.ActionListenerWrapper; import com.android.server.wifi.util.NativeUtil; import com.android.server.wifi.util.RssiUtil; import com.android.server.wifi.util.ScanResultUtil; import com.android.server.wifi.util.StateMachineObituary; import com.android.server.wifi.util.WifiPermissionsUtil; import com.android.wifi.resources.R; import java.io.BufferedReader; import java.io.FileDescriptor; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.io.PrintWriter; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.net.Inet4Address; import java.net.Inet6Address; import java.net.InetAddress; import java.net.URL; import java.time.Duration; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Objects; import java.util.Set; import java.util.stream.Collectors; /** * Implementation of ClientMode. Event handling for Client mode logic is done here, * and all changes in connectivity state are initiated here. * * Note: No external modules should be calling into {@link ClientModeImpl}. Please plumb it via * {@link ClientModeManager} until b/160014176 is fixed. */ public class ClientModeImpl extends StateMachine implements ClientMode { private static final String NETWORKTYPE = "WIFI"; @VisibleForTesting public static final short NUM_LOG_RECS_VERBOSE_LOW_MEMORY = 200; @VisibleForTesting public static final short NUM_LOG_RECS_VERBOSE = 3000; private static final String TAG = "WifiClientModeImpl"; private static final int IPCLIENT_STARTUP_TIMEOUT_MS = 2_000; private static final int IPCLIENT_SHUTDOWN_TIMEOUT_MS = 60_000; // 60 seconds @VisibleForTesting public static final long CONNECTING_WATCHDOG_TIMEOUT_MS = 30_000; // 30 secs. @VisibleForTesting public static final short NETWORK_NOT_FOUND_EVENT_THRESHOLD = 3; private boolean mVerboseLoggingEnabled = false; /** * Log with error attribute * * @param s is string log */ @Override protected void loge(String s) { Log.e(getTag(), s); } @Override protected void logd(String s) { Log.d(getTag(), s); } @Override protected void log(String s) { Log.d(getTag(), s); } private final Context mContext; private final WifiMetrics mWifiMetrics; private final WifiMonitor mWifiMonitor; private final WifiNative mWifiNative; private final WifiPermissionsUtil mWifiPermissionsUtil; private final WifiConfigManager mWifiConfigManager; private final WifiConnectivityManager mWifiConnectivityManager; private final WifiBlocklistMonitor mWifiBlocklistMonitor; private final WifiDiagnostics mWifiDiagnostics; private final Clock mClock; private final WifiScoreCard mWifiScoreCard; private final WifiHealthMonitor mWifiHealthMonitor; private final WifiScoreReport mWifiScoreReport; private final WifiTrafficPoller mWifiTrafficPoller; private final PasspointManager mPasspointManager; private final WifiDataStall mWifiDataStall; private final LinkProbeManager mLinkProbeManager; private final MboOceController mMboOceController; private final McastLockManagerFilterController mMcastLockManagerFilterController; private final ActivityManager mActivityManager; private final FrameworkFacade mFacade; private final WifiStateTracker mWifiStateTracker; private final WrongPasswordNotifier mWrongPasswordNotifier; private final EapFailureNotifier mEapFailureNotifier; private final SimRequiredNotifier mSimRequiredNotifier; private final ConnectionFailureNotifier mConnectionFailureNotifier; private final WifiNetworkSuggestionsManager mWifiNetworkSuggestionsManager; private final ThroughputPredictor mThroughputPredictor; private final DeviceConfigFacade mDeviceConfigFacade; private final ScoringParams mScoringParams; private final WifiThreadRunner mWifiThreadRunner; private final ScanRequestProxy mScanRequestProxy; private final WifiLastResortWatchdog mWifiLastResortWatchdog; private final WakeupController mWakeupController; private final WifiLockManager mWifiLockManager; private final WifiP2pConnection mWifiP2pConnection; private final WifiGlobals mWifiGlobals; private final ClientModeManagerBroadcastQueue mBroadcastQueue; private final TelephonyManager mTelephonyManager; private final WifiSettingsConfigStore mSettingsConfigStore; private final long mId; private boolean mScreenOn = false; private final String mInterfaceName; private final ConcreteClientModeManager mClientModeManager; private int mLastSignalLevel = -1; private int mLastTxKbps = -1; private int mLastRxKbps = -1; private int mLastScanRssi = WifiInfo.INVALID_RSSI; private String mLastBssid; // TODO (b/162942761): Ensure this is reset when mTargetNetworkId is set. private int mLastNetworkId; // The network Id we successfully joined // The subId used by WifiConfiguration with SIM credential which was connected successfully private int mLastSubId; private String mLastSimBasedConnectionCarrierName; private URL mTermsAndConditionsUrl; // Indicates that the Passpoint network is captive @Nullable private byte[] mCachedPacketFilter; @Nullable private WifiNative.ConnectionCapabilities mLastConnectionCapabilities; private String getTag() { return TAG + "[" + (mInterfaceName == null ? "unknown" : mInterfaceName) + "]"; } private void processRssiThreshold(byte curRssi, int reason, WifiNative.WifiRssiEventHandler rssiHandler) { if (curRssi == Byte.MAX_VALUE || curRssi == Byte.MIN_VALUE) { Log.wtf(getTag(), "processRssiThreshold: Invalid rssi " + curRssi); return; } for (int i = 0; i < mRssiRanges.length; i++) { if (curRssi < mRssiRanges[i]) { // Assume sorted values(ascending order) for rssi, // bounded by high(127) and low(-128) at extremeties byte maxRssi = mRssiRanges[i]; byte minRssi = mRssiRanges[i - 1]; // This value of hw has to be believed as this value is averaged and has breached // the rssi thresholds and raised event to host. This would be eggregious if this // value is invalid mWifiInfo.setRssi(curRssi); updateCapabilities(); int ret = startRssiMonitoringOffload(maxRssi, minRssi, rssiHandler); Log.d(getTag(), "Re-program RSSI thresholds for " + getWhatToString(reason) + ": [" + minRssi + ", " + maxRssi + "], curRssi=" + curRssi + " ret=" + ret); break; } } } private boolean mEnableRssiPolling = false; private int mRssiPollToken = 0; private PowerManager.WakeLock mSuspendWakeLock; /** * Value to set in wpa_supplicant "bssid" field when we don't want to restrict connection to * a specific AP. */ public static final String SUPPLICANT_BSSID_ANY = "any"; /** * The link properties of the wifi interface. * Do not modify this directly; use updateLinkProperties instead. */ private LinkProperties mLinkProperties; private final Object mDhcpResultsParcelableLock = new Object(); @NonNull private DhcpResultsParcelable mDhcpResultsParcelable = new DhcpResultsParcelable(); // NOTE: Do not return to clients - see syncRequestConnectionInfo() private final ExtendedWifiInfo mWifiInfo; // TODO : remove this member. It should be possible to only call sendNetworkChangeBroadcast when // the state actually changed, and to deduce the state of the agent from the state of the // machine when generating the NetworkInfo for the broadcast. private DetailedState mNetworkAgentState; private final SupplicantStateTracker mSupplicantStateTracker; // Indicates that framework is attempting to roam, set true on CMD_START_ROAM, set false when // wifi connects or fails to connect private boolean mIsAutoRoaming = false; // Indicates that driver is attempting to allowlist roaming, set true on allowlist roam BSSID // associated, set false when wifi connects or fails to connect private boolean mIsLinkedNetworkRoaming = false; // Roaming failure count private int mRoamFailCount = 0; // This is the BSSID we are trying to associate to, it can be set to SUPPLICANT_BSSID_ANY // if we havent selected a BSSID for joining. private String mTargetBssid = SUPPLICANT_BSSID_ANY; // This one is used to track the current target network ID. This is used for error // handling during connection setup since many error message from supplicant does not report // SSID. Once connected, it will be set to invalid // TODO (b/162942761): Ensure this is reset when mLastNetworkId is set. private int mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; private WifiConfiguration mTargetWifiConfiguration = null; @Nullable private VcnManager mVcnManager = null; /** * Method to clear {@link #mTargetBssid} and reset the current connected network's * bssid in wpa_supplicant after a roam/connect attempt. */ public boolean clearTargetBssid(String dbg) { WifiConfiguration config = mWifiConfigManager.getConfiguredNetwork(mTargetNetworkId); if (config == null) { return false; } String bssid = SUPPLICANT_BSSID_ANY; if (config.BSSID != null) { bssid = config.BSSID; if (mVerboseLoggingEnabled) { Log.d(getTag(), "force BSSID to " + bssid + "due to config"); } } if (mVerboseLoggingEnabled) { logd(dbg + " clearTargetBssid " + bssid + " key=" + config.getProfileKey()); } mTargetBssid = bssid; return mWifiNative.setNetworkBSSID(mInterfaceName, bssid); } /** * Set Config's default BSSID (for association purpose) and {@link #mTargetBssid} * @param config config need set BSSID * @param bssid default BSSID to assocaite with when connect to this network * @return false -- does not change the current default BSSID of the configure * true -- change the current default BSSID of the configur */ private boolean setTargetBssid(WifiConfiguration config, String bssid) { if (config == null || bssid == null) { return false; } if (config.BSSID != null) { bssid = config.BSSID; if (mVerboseLoggingEnabled) { Log.d(getTag(), "force BSSID to " + bssid + "due to config"); } } if (mVerboseLoggingEnabled) { Log.d(getTag(), "setTargetBssid set to " + bssid + " key=" + config.getProfileKey()); } mTargetBssid = bssid; config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid); return true; } private volatile IpClientManager mIpClient; private IpClientCallbacksImpl mIpClientCallbacks; private final WifiNetworkFactory mNetworkFactory; private final UntrustedWifiNetworkFactory mUntrustedNetworkFactory; private final OemWifiNetworkFactory mOemWifiNetworkFactory; @VisibleForTesting @Nullable WifiNetworkAgent mNetworkAgent; private byte[] mRssiRanges; // Used to filter out requests we couldn't possibly satisfy. private final NetworkCapabilities mNetworkCapabilitiesFilter; /* The base for wifi message types */ static final int BASE = Protocol.BASE_WIFI; /* BT connection state changed, e.g., connected/disconnected */ static final int CMD_BLUETOOTH_CONNECTION_STATE_CHANGE = BASE + 31; /* Supplicant commands after driver start*/ /* Disconnect from a network */ static final int CMD_DISCONNECT = BASE + 73; /* Reconnect to a network */ static final int CMD_RECONNECT = BASE + 74; /* Reassociate to a network */ static final int CMD_REASSOCIATE = BASE + 75; /* Enables RSSI poll */ static final int CMD_ENABLE_RSSI_POLL = BASE + 82; /* RSSI poll */ static final int CMD_RSSI_POLL = BASE + 83; /** Runs RSSI poll once */ static final int CMD_ONESHOT_RSSI_POLL = BASE + 84; /* Enable suspend mode optimizations in the driver */ static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; /** * Watchdog for protecting against b/16823537 * Leave time for 4-way handshake to succeed */ static final int ROAM_GUARD_TIMER_MSEC = 15000; int mRoamWatchdogCount = 0; /* Roam state watchdog */ static final int CMD_ROAM_WATCHDOG_TIMER = BASE + 94; /* Screen change intent handling */ static final int CMD_SCREEN_STATE_CHANGED = BASE + 95; /* Disconnecting state watchdog */ static final int CMD_CONNECTING_WATCHDOG_TIMER = BASE + 96; /* SIM is removed; reset any cached data for it */ static final int CMD_RESET_SIM_NETWORKS = BASE + 101; @Retention(RetentionPolicy.SOURCE) @IntDef(prefix = {"RESET_SIM_REASON_"}, value = { RESET_SIM_REASON_SIM_REMOVED, RESET_SIM_REASON_SIM_INSERTED, RESET_SIM_REASON_DEFAULT_DATA_SIM_CHANGED}) @interface ResetSimReason {} static final int RESET_SIM_REASON_SIM_REMOVED = 0; static final int RESET_SIM_REASON_SIM_INSERTED = 1; static final int RESET_SIM_REASON_DEFAULT_DATA_SIM_CHANGED = 2; /** Connecting watchdog timeout counter */ private int mConnectingWatchdogCount = 0; /* We now have a valid IP configuration. */ static final int CMD_IP_CONFIGURATION_SUCCESSFUL = BASE + 138; /* We no longer have a valid IP configuration. */ static final int CMD_IP_CONFIGURATION_LOST = BASE + 139; /* Link configuration (IP address, DNS, ...) changes notified via netlink */ static final int CMD_UPDATE_LINKPROPERTIES = BASE + 140; static final int CMD_START_CONNECT = BASE + 143; private static final int NETWORK_STATUS_UNWANTED_DISCONNECT = 0; private static final int NETWORK_STATUS_UNWANTED_VALIDATION_FAILED = 1; private static final int NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN = 2; static final int CMD_UNWANTED_NETWORK = BASE + 144; static final int CMD_START_ROAM = BASE + 145; static final int CMD_NETWORK_STATUS = BASE + 148; /* A layer 3 neighbor on the Wi-Fi link became unreachable. */ static final int CMD_IP_REACHABILITY_LOST = BASE + 149; static final int CMD_ACCEPT_UNVALIDATED = BASE + 153; /* used to offload sending IP packet */ static final int CMD_START_IP_PACKET_OFFLOAD = BASE + 160; /* used to stop offload sending IP packet */ static final int CMD_STOP_IP_PACKET_OFFLOAD = BASE + 161; /* used to start rssi monitoring in hw */ static final int CMD_START_RSSI_MONITORING_OFFLOAD = BASE + 162; /* used to stop rssi moniroting in hw */ static final int CMD_STOP_RSSI_MONITORING_OFFLOAD = BASE + 163; /* used to indicated RSSI threshold breach in hw */ static final int CMD_RSSI_THRESHOLD_BREACHED = BASE + 164; /** * Used to handle messages bounced between ClientModeImpl and IpClient. */ static final int CMD_IPV4_PROVISIONING_SUCCESS = BASE + 200; static final int CMD_IPV4_PROVISIONING_FAILURE = BASE + 201; /* Push a new APF program to the HAL */ static final int CMD_INSTALL_PACKET_FILTER = BASE + 202; /* Enable/disable fallback packet filtering */ static final int CMD_SET_FALLBACK_PACKET_FILTERING = BASE + 203; /* Enable/disable Neighbor Discovery offload functionality. */ static final int CMD_CONFIG_ND_OFFLOAD = BASE + 204; /* Read the APF program & data buffer */ static final int CMD_READ_PACKET_FILTER = BASE + 208; /** Used to add packet filter to apf. */ static final int CMD_ADD_KEEPALIVE_PACKET_FILTER_TO_APF = BASE + 209; /** Used to remove packet filter from apf. */ static final int CMD_REMOVE_KEEPALIVE_PACKET_FILTER_FROM_APF = BASE + 210; /* Indicates that diagnostics should time out a connection start event. */ static final int CMD_DIAGS_CONNECT_TIMEOUT = BASE + 252; @VisibleForTesting static final int CMD_PRE_DHCP_ACTION = BASE + 255; private static final int CMD_PRE_DHCP_ACTION_COMPLETE = BASE + 256; private static final int CMD_POST_DHCP_ACTION = BASE + 257; private static final int CMD_CONNECT_NETWORK = BASE + 258; private static final int CMD_SAVE_NETWORK = BASE + 259; /* Start connection to FILS AP*/ static final int CMD_START_FILS_CONNECTION = BASE + 262; static final int CMD_CONNECTABLE_STATE_SETUP = BASE + 300; /* Tracks if suspend optimizations need to be disabled by DHCP, * screen or due to high perf mode. * When any of them needs to disable it, we keep the suspend optimizations * disabled */ private int mSuspendOptNeedsDisabled = 0; private static final int SUSPEND_DUE_TO_DHCP = 1; private static final int SUSPEND_DUE_TO_HIGH_PERF = 1 << 1; private static final int SUSPEND_DUE_TO_SCREEN = 1 << 2; /** @see #isRecentlySelectedByTheUser */ @VisibleForTesting public static final int LAST_SELECTED_NETWORK_EXPIRATION_AGE_MILLIS = 30 * 1000; /* Tracks if user has enabled Connected Mac Randomization through settings */ int mRunningBeaconCount = 0; /* Parent state where connections are allowed */ private State mConnectableState = new ConnectableState(); /* Connecting/Connected to an access point */ private State mConnectingOrConnectedState = new ConnectingOrConnectedState(); /* Connecting to an access point */ private State mL2ConnectingState = new L2ConnectingState(); /* Connected at 802.11 (L2) level */ private State mL2ConnectedState = new L2ConnectedState(); /* fetching IP after connection to access point (assoc+auth complete) */ private State mL3ProvisioningState = new L3ProvisioningState(); /* Connected with IP addr */ private State mL3ConnectedState = new L3ConnectedState(); /* Roaming */ private State mRoamingState = new RoamingState(); /* Network is not connected, supplicant assoc+auth is not complete */ private State mDisconnectedState = new DisconnectedState(); /* * FILS connection related variables. */ /* To indicate to IpClient whether HLP IEs were included or not in assoc request */ private boolean mSentHLPs = false; /* Tracks IpClient start state until (FILS_)NETWORK_CONNECTION_EVENT event */ private boolean mIpClientWithPreConnection = false; /** * Work source to use to blame usage on the WiFi service */ public static final WorkSource WIFI_WORK_SOURCE = new WorkSource(Process.WIFI_UID); private final BatteryStatsManager mBatteryStatsManager; private final WifiCarrierInfoManager mWifiCarrierInfoManager; private final OnNetworkUpdateListener mOnNetworkUpdateListener; private final OnCarrierOffloadDisabledListener mOnCarrierOffloadDisabledListener; private final ClientModeImplMonitor mCmiMonitor; private final WifiNetworkSelector mWifiNetworkSelector; private final WifiInjector mWifiInjector; // Maximum duration to continue to log Wifi usability stats after a data stall is triggered. @VisibleForTesting public static final long DURATION_TO_WAIT_ADD_STATS_AFTER_DATA_STALL_MS = 30 * 1000; private long mDataStallTriggerTimeMs = -1; private int mLastStatusDataStall = WifiIsUnusableEvent.TYPE_UNKNOWN; @Nullable private StateMachineObituary mObituary = null; @Nullable private WifiVcnNetworkPolicyChangeListener mVcnPolicyChangeListener; /** NETWORK_NOT_FOUND_EVENT event counter */ private int mNetworkNotFoundEventCount = 0; /** Note that this constructor will also start() the StateMachine. */ public ClientModeImpl( @NonNull Context context, @NonNull WifiMetrics wifiMetrics, @NonNull Clock clock, @NonNull WifiScoreCard wifiScoreCard, @NonNull WifiStateTracker wifiStateTracker, @NonNull WifiPermissionsUtil wifiPermissionsUtil, @NonNull WifiConfigManager wifiConfigManager, @NonNull PasspointManager passpointManager, @NonNull WifiMonitor wifiMonitor, @NonNull WifiDiagnostics wifiDiagnostics, @NonNull WifiDataStall wifiDataStall, @NonNull ScoringParams scoringParams, @NonNull WifiThreadRunner wifiThreadRunner, @NonNull WifiNetworkSuggestionsManager wifiNetworkSuggestionsManager, @NonNull WifiHealthMonitor wifiHealthMonitor, @NonNull ThroughputPredictor throughputPredictor, @NonNull DeviceConfigFacade deviceConfigFacade, @NonNull ScanRequestProxy scanRequestProxy, @NonNull ExtendedWifiInfo wifiInfo, @NonNull WifiConnectivityManager wifiConnectivityManager, @NonNull WifiBlocklistMonitor wifiBlocklistMonitor, @NonNull ConnectionFailureNotifier connectionFailureNotifier, @NonNull NetworkCapabilities networkCapabilitiesFilter, @NonNull WifiNetworkFactory networkFactory, @NonNull UntrustedWifiNetworkFactory untrustedWifiNetworkFactory, @NonNull OemWifiNetworkFactory oemPaidWifiNetworkFactory, @NonNull WifiLastResortWatchdog wifiLastResortWatchdog, @NonNull WakeupController wakeupController, @NonNull WifiLockManager wifiLockManager, @NonNull FrameworkFacade facade, @NonNull Looper looper, @NonNull WifiNative wifiNative, @NonNull WrongPasswordNotifier wrongPasswordNotifier, @NonNull WifiTrafficPoller wifiTrafficPoller, @NonNull LinkProbeManager linkProbeManager, long id, @NonNull BatteryStatsManager batteryStatsManager, @NonNull SupplicantStateTracker supplicantStateTracker, @NonNull MboOceController mboOceController, @NonNull WifiCarrierInfoManager wifiCarrierInfoManager, @NonNull EapFailureNotifier eapFailureNotifier, @NonNull SimRequiredNotifier simRequiredNotifier, @NonNull WifiScoreReport wifiScoreReport, @NonNull WifiP2pConnection wifiP2pConnection, @NonNull WifiGlobals wifiGlobals, @NonNull String ifaceName, @NonNull ConcreteClientModeManager clientModeManager, @NonNull ClientModeImplMonitor cmiMonitor, @NonNull ClientModeManagerBroadcastQueue broadcastQueue, @NonNull WifiNetworkSelector wifiNetworkSelector, @NonNull TelephonyManager telephonyManager, @NonNull WifiInjector wifiInjector, @NonNull WifiSettingsConfigStore settingsConfigStore, boolean verboseLoggingEnabled) { super(TAG, looper); mWifiMetrics = wifiMetrics; mClock = clock; mWifiScoreCard = wifiScoreCard; mContext = context; mFacade = facade; mWifiNative = wifiNative; mWrongPasswordNotifier = wrongPasswordNotifier; mId = id; mEapFailureNotifier = eapFailureNotifier; mSimRequiredNotifier = simRequiredNotifier; mWifiTrafficPoller = wifiTrafficPoller; mLinkProbeManager = linkProbeManager; mMboOceController = mboOceController; mWifiCarrierInfoManager = wifiCarrierInfoManager; mBroadcastQueue = broadcastQueue; mNetworkAgentState = DetailedState.DISCONNECTED; mBatteryStatsManager = batteryStatsManager; mWifiStateTracker = wifiStateTracker; mWifiPermissionsUtil = wifiPermissionsUtil; mWifiConfigManager = wifiConfigManager; mPasspointManager = passpointManager; mWifiMonitor = wifiMonitor; mWifiDiagnostics = wifiDiagnostics; mWifiDataStall = wifiDataStall; mThroughputPredictor = throughputPredictor; mDeviceConfigFacade = deviceConfigFacade; mWifiInfo = wifiInfo; mSupplicantStateTracker = supplicantStateTracker; mWifiConnectivityManager = wifiConnectivityManager; mWifiBlocklistMonitor = wifiBlocklistMonitor; mConnectionFailureNotifier = connectionFailureNotifier; mLinkProperties = new LinkProperties(); mMcastLockManagerFilterController = new McastLockManagerFilterController(); mActivityManager = context.getSystemService(ActivityManager.class); mLastBssid = null; mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; mLastSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID; mLastSimBasedConnectionCarrierName = null; mLastSignalLevel = -1; mScoringParams = scoringParams; mWifiThreadRunner = wifiThreadRunner; mScanRequestProxy = scanRequestProxy; mWifiScoreReport = wifiScoreReport; mNetworkCapabilitiesFilter = networkCapabilitiesFilter; mNetworkFactory = networkFactory; mUntrustedNetworkFactory = untrustedWifiNetworkFactory; mOemWifiNetworkFactory = oemPaidWifiNetworkFactory; mWifiLastResortWatchdog = wifiLastResortWatchdog; mWakeupController = wakeupController; mWifiLockManager = wifiLockManager; mWifiNetworkSuggestionsManager = wifiNetworkSuggestionsManager; mWifiHealthMonitor = wifiHealthMonitor; mWifiP2pConnection = wifiP2pConnection; mWifiGlobals = wifiGlobals; mInterfaceName = ifaceName; mClientModeManager = clientModeManager; mCmiMonitor = cmiMonitor; mTelephonyManager = telephonyManager; mSettingsConfigStore = settingsConfigStore; updateInterfaceCapabilities(); PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend"); mSuspendWakeLock.setReferenceCounted(false); mOnNetworkUpdateListener = new OnNetworkUpdateListener(); mWifiConfigManager.addOnNetworkUpdateListener(mOnNetworkUpdateListener); mOnCarrierOffloadDisabledListener = new OnCarrierOffloadDisabledListener(); mWifiCarrierInfoManager.addOnCarrierOffloadDisabledListener( mOnCarrierOffloadDisabledListener); mWifiNetworkSelector = wifiNetworkSelector; mWifiInjector = wifiInjector; enableVerboseLogging(verboseLoggingEnabled); addState(mConnectableState); { addState(mConnectingOrConnectedState, mConnectableState); { addState(mL2ConnectingState, mConnectingOrConnectedState); addState(mL2ConnectedState, mConnectingOrConnectedState); { addState(mL3ProvisioningState, mL2ConnectedState); addState(mL3ConnectedState, mL2ConnectedState); addState(mRoamingState, mL2ConnectedState); } } addState(mDisconnectedState, mConnectableState); } setInitialState(mDisconnectedState); setLogOnlyTransitions(false); // Start the StateMachine start(); // update with initial role for ConcreteClientModeManager onRoleChanged(); } private static final int[] WIFI_MONITOR_EVENTS = { WifiMonitor.TARGET_BSSID_EVENT, WifiMonitor.ASSOCIATED_BSSID_EVENT, WifiMonitor.ANQP_DONE_EVENT, WifiMonitor.ASSOCIATION_REJECTION_EVENT, WifiMonitor.AUTHENTICATION_FAILURE_EVENT, WifiMonitor.GAS_QUERY_DONE_EVENT, WifiMonitor.GAS_QUERY_START_EVENT, WifiMonitor.HS20_REMEDIATION_EVENT, WifiMonitor.HS20_DEAUTH_IMMINENT_EVENT, WifiMonitor.HS20_TERMS_AND_CONDITIONS_ACCEPTANCE_REQUIRED_EVENT, WifiMonitor.NETWORK_CONNECTION_EVENT, WifiMonitor.NETWORK_DISCONNECTION_EVENT, WifiMonitor.RX_HS20_ANQP_ICON_EVENT, WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT, WifiMonitor.SUP_REQUEST_IDENTITY, WifiMonitor.SUP_REQUEST_SIM_AUTH, WifiMonitor.MBO_OCE_BSS_TM_HANDLING_DONE, WifiMonitor.TRANSITION_DISABLE_INDICATION, WifiMonitor.NETWORK_NOT_FOUND_EVENT, }; private void registerForWifiMonitorEvents() { for (int event : WIFI_MONITOR_EVENTS) { mWifiMonitor.registerHandler(mInterfaceName, event, getHandler()); } mWifiMetrics.registerForWifiMonitorEvents(mInterfaceName); mWifiLastResortWatchdog.registerForWifiMonitorEvents(mInterfaceName); } private void deregisterForWifiMonitorEvents() { for (int event : WIFI_MONITOR_EVENTS) { mWifiMonitor.deregisterHandler(mInterfaceName, event, getHandler()); } mWifiMetrics.deregisterForWifiMonitorEvents(mInterfaceName); mWifiLastResortWatchdog.deregisterForWifiMonitorEvents(mInterfaceName); } private static boolean isValidBssid(String bssidStr) { try { MacAddress bssid = MacAddress.fromString(bssidStr); return !bssid.equals(WifiManager.ALL_ZEROS_MAC_ADDRESS); } catch (IllegalArgumentException e) { return false; } } private void setMulticastFilter(boolean enabled) { if (mIpClient != null) { mIpClient.setMulticastFilter(enabled); } } /** * Class to implement the MulticastLockManager.FilterController callback. */ class McastLockManagerFilterController implements WifiMulticastLockManager.FilterController { /** * Start filtering Multicast v4 packets */ public void startFilteringMulticastPackets() { setMulticastFilter(true); } /** * Stop filtering Multicast v4 packets */ public void stopFilteringMulticastPackets() { setMulticastFilter(false); } } class IpClientCallbacksImpl extends IpClientCallbacks { private final ConditionVariable mWaitForCreationCv = new ConditionVariable(false); private final ConditionVariable mWaitForStopCv = new ConditionVariable(false); @Override public void onIpClientCreated(IIpClient ipClient) { // IpClient may take a very long time (many minutes) to start at boot time. But after // that IpClient should start pretty quickly (a few seconds). // Blocking wait for 5 seconds first (for when the wait is short) // If IpClient is still not ready after blocking wait, async wait (for when wait is // long). Will drop all connection requests until IpClient is ready. Other requests // will still be processed. sendMessageAtFrontOfQueue(CMD_CONNECTABLE_STATE_SETUP, new IpClientManager(ipClient, getName())); mWaitForCreationCv.open(); } @Override public void onPreDhcpAction() { sendMessage(CMD_PRE_DHCP_ACTION); } @Override public void onPostDhcpAction() { sendMessage(CMD_POST_DHCP_ACTION); } @Override public void onNewDhcpResults(DhcpResultsParcelable dhcpResults) { if (dhcpResults != null) { sendMessage(CMD_IPV4_PROVISIONING_SUCCESS, dhcpResults); } else { sendMessage(CMD_IPV4_PROVISIONING_FAILURE); } } @Override public void onProvisioningSuccess(LinkProperties newLp) { addPasspointInfoToLinkProperties(newLp); mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_CMD_IP_CONFIGURATION_SUCCESSFUL); sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); } @Override public void onProvisioningFailure(LinkProperties newLp) { mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_CMD_IP_CONFIGURATION_LOST); sendMessage(CMD_IP_CONFIGURATION_LOST); } @Override public void onLinkPropertiesChange(LinkProperties newLp) { addPasspointInfoToLinkProperties(newLp); sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); } @Override public void onReachabilityLost(String logMsg) { mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_CMD_IP_REACHABILITY_LOST); sendMessage(CMD_IP_REACHABILITY_LOST, logMsg); } @Override public void installPacketFilter(byte[] filter) { sendMessage(CMD_INSTALL_PACKET_FILTER, filter); } @Override public void startReadPacketFilter() { sendMessage(CMD_READ_PACKET_FILTER); } @Override public void setFallbackMulticastFilter(boolean enabled) { sendMessage(CMD_SET_FALLBACK_PACKET_FILTERING, enabled); } @Override public void setNeighborDiscoveryOffload(boolean enabled) { sendMessage(CMD_CONFIG_ND_OFFLOAD, (enabled ? 1 : 0)); } @Override public void onPreconnectionStart(List packets) { sendMessage(CMD_START_FILS_CONNECTION, 0, 0, packets); } @Override public void onQuit() { mWaitForStopCv.open(); } boolean awaitCreation() { return mWaitForCreationCv.block(IPCLIENT_STARTUP_TIMEOUT_MS); } boolean awaitShutdown() { return mWaitForStopCv.block(IPCLIENT_SHUTDOWN_TIMEOUT_MS); } } private void stopIpClient() { if (mVerboseLoggingEnabled) { Log.v(getTag(), "stopIpClient IpClientWithPreConnection: " + mIpClientWithPreConnection); } if (mIpClient != null) { if (mIpClientWithPreConnection) { mIpClient.notifyPreconnectionComplete(false); } mIpClient.stop(); } mIpClientWithPreConnection = false; mSentHLPs = false; } private void stopDhcpSetup() { /* Restore power save and suspend optimizations */ handlePostDhcpSetup(); stopIpClient(); } /** * Listener for config manager network config related events. * TODO (b/117601161) : Move some of the existing handling in WifiConnectivityManager's listener * for the same events. */ private class OnNetworkUpdateListener implements WifiConfigManager.OnNetworkUpdateListener { @Override public void onNetworkRemoved(WifiConfiguration config) { // The current connected or connecting network has been removed, trigger a disconnect. if (config.networkId == mTargetNetworkId || config.networkId == mLastNetworkId) { // Disconnect and let autojoin reselect a new network sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_NETWORK_REMOVED); } else { WifiConfiguration currentConfig = getConnectedWifiConfiguration(); if (currentConfig != null && currentConfig.isLinked(config)) { logi("current network linked config removed, update allowlist networks"); updateLinkedNetworks(currentConfig); } } mWifiNative.removeNetworkCachedData(config.networkId); } @Override public void onNetworkUpdated(WifiConfiguration newConfig, WifiConfiguration oldConfig) { // Clear invalid cached data. mWifiNative.removeNetworkCachedData(oldConfig.networkId); if (WifiConfigurationUtil.hasCredentialChanged(oldConfig, newConfig)) { mWifiBlocklistMonitor.handleNetworkRemoved(newConfig.SSID); } // Check if user/app change meteredOverride for connected network. if (newConfig.networkId != mLastNetworkId || newConfig.meteredOverride == oldConfig.meteredOverride) { // nothing to do. return; } boolean isMetered = WifiConfiguration.isMetered(newConfig, mWifiInfo); boolean wasMetered = WifiConfiguration.isMetered(oldConfig, mWifiInfo); if (isMetered == wasMetered) { // no meteredness change, nothing to do. if (mVerboseLoggingEnabled) { Log.v(getTag(), "User/app changed meteredOverride, " + "but no change in meteredness"); } return; } // If unmetered->metered trigger a disconnect. // If metered->unmetered update capabilities. if (isMetered) { Log.w(getTag(), "Network marked metered, triggering disconnect"); sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_NETWORK_METERED); } else { Log.i(getTag(), "Network marked unmetered, triggering capabilities update"); updateCapabilities(newConfig); } } @Override public void onNetworkTemporarilyDisabled(WifiConfiguration config, int disableReason) { if (disableReason == DISABLED_NO_INTERNET_TEMPORARY) return; if (config.networkId == mTargetNetworkId || config.networkId == mLastNetworkId) { // Disconnect and let autojoin reselect a new network sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_NETWORK_TEMPORARY_DISABLED); } } @Override public void onNetworkPermanentlyDisabled(WifiConfiguration config, int disableReason) { // For DISABLED_NO_INTERNET_PERMANENT we do not need to remove the network // because supplicant won't be trying to reconnect. If this is due to a // preventAutomaticReconnect request from ConnectivityService, that service // will disconnect as appropriate. if (disableReason == DISABLED_NO_INTERNET_PERMANENT) return; if (config.networkId == mTargetNetworkId || config.networkId == mLastNetworkId) { // Disconnect and let autojoin reselect a new network sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_NETWORK_PERMANENT_DISABLED); } } } private class OnCarrierOffloadDisabledListener implements WifiCarrierInfoManager.OnCarrierOffloadDisabledListener { @Override public void onCarrierOffloadDisabled(int subscriptionId, boolean merged) { int networkId = mTargetNetworkId == WifiConfiguration.INVALID_NETWORK_ID ? mLastNetworkId : mTargetNetworkId; if (networkId == WifiConfiguration.INVALID_NETWORK_ID) { return; } WifiConfiguration configuration = mWifiConfigManager.getConfiguredNetwork(networkId); if (configuration.subscriptionId == subscriptionId && configuration.carrierMerged == merged) { Log.i(getTag(), "Carrier network offload disabled, triggering disconnect"); sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_CARRIER_OFFLOAD_DISABLED); } } } /** * Method to update logging level in wifi service related classes. * * @param verbose int logging level to use */ public void enableVerboseLogging(boolean verbose) { if (verbose) { mVerboseLoggingEnabled = true; setLogRecSize(mActivityManager.isLowRamDevice() ? NUM_LOG_RECS_VERBOSE_LOW_MEMORY : NUM_LOG_RECS_VERBOSE); } else { mVerboseLoggingEnabled = false; setLogRecSize(mWifiGlobals.getClientModeImplNumLogRecs()); } mWifiScoreReport.enableVerboseLogging(mVerboseLoggingEnabled); mSupplicantStateTracker.enableVerboseLogging(mVerboseLoggingEnabled); } /** * Initiates connection to a network specified by the user/app. This method checks if the * requesting app holds the NETWORK_SETTINGS permission. * * @param netId Id network to initiate connection. * @param uid UID of the app requesting the connection. * @param forceReconnect Whether to force a connection even if we're connected to the same * network currently. */ private void connectToUserSelectNetwork(int netId, int uid, boolean forceReconnect) { logd("connectToUserSelectNetwork netId " + netId + ", uid " + uid + ", forceReconnect = " + forceReconnect); if (!forceReconnect && (mLastNetworkId == netId || mTargetNetworkId == netId)) { // We're already connecting/connected to the user specified network, don't trigger a // reconnection unless it was forced. logi("connectToUserSelectNetwork already connecting/connected=" + netId); } else { mWifiConnectivityManager.prepareForForcedConnection(netId); if (uid == Process.SYSTEM_UID) { mWifiMetrics.setNominatorForNetwork(netId, WifiMetricsProto.ConnectionEvent.NOMINATOR_MANUAL); } startConnectToNetwork(netId, uid, SUPPLICANT_BSSID_ANY); } } /** * ****************************************************** * Methods exposed for public use * ****************************************************** */ /** * Retrieve a Messenger for the ClientModeImpl Handler * * @return Messenger */ public Messenger getMessenger() { return new Messenger(getHandler()); } // For debugging, keep track of last message status handling // TODO, find an equivalent mechanism as part of parent class private static final int MESSAGE_HANDLING_STATUS_PROCESSED = 2; private static final int MESSAGE_HANDLING_STATUS_OK = 1; private static final int MESSAGE_HANDLING_STATUS_UNKNOWN = 0; private static final int MESSAGE_HANDLING_STATUS_REFUSED = -1; private static final int MESSAGE_HANDLING_STATUS_FAIL = -2; private static final int MESSAGE_HANDLING_STATUS_OBSOLETE = -3; private static final int MESSAGE_HANDLING_STATUS_DEFERRED = -4; private static final int MESSAGE_HANDLING_STATUS_DISCARD = -5; private static final int MESSAGE_HANDLING_STATUS_LOOPED = -6; private static final int MESSAGE_HANDLING_STATUS_HANDLING_ERROR = -7; private int mMessageHandlingStatus = 0; private int mOnTime = 0; private int mTxTime = 0; private int mRxTime = 0; private int mOnTimeScreenStateChange = 0; private long mLastOntimeReportTimeStamp = 0; private long mLastScreenStateChangeTimeStamp = 0; private int mOnTimeLastReport = 0; private int mTxTimeLastReport = 0; private int mRxTimeLastReport = 0; private WifiLinkLayerStats mLastLinkLayerStats; private long mLastLinkLayerStatsUpdate = 0; String reportOnTime() { long now = mClock.getWallClockMillis(); StringBuilder sb = new StringBuilder(); // Report stats since last report int on = mOnTime - mOnTimeLastReport; mOnTimeLastReport = mOnTime; int tx = mTxTime - mTxTimeLastReport; mTxTimeLastReport = mTxTime; int rx = mRxTime - mRxTimeLastReport; mRxTimeLastReport = mRxTime; int period = (int) (now - mLastOntimeReportTimeStamp); mLastOntimeReportTimeStamp = now; sb.append(String.format("[on:%d tx:%d rx:%d period:%d]", on, tx, rx, period)); // Report stats since Screen State Changed on = mOnTime - mOnTimeScreenStateChange; period = (int) (now - mLastScreenStateChangeTimeStamp); sb.append(String.format(" from screen [on:%d period:%d]", on, period)); return sb.toString(); } public WifiLinkLayerStats getWifiLinkLayerStats() { if (mInterfaceName == null) { loge("getWifiLinkLayerStats called without an interface"); return null; } mLastLinkLayerStatsUpdate = mClock.getWallClockMillis(); WifiLinkLayerStats stats = mWifiNative.getWifiLinkLayerStats(mInterfaceName); if (stats != null) { mOnTime = stats.on_time; mTxTime = stats.tx_time; mRxTime = stats.rx_time; mRunningBeaconCount = stats.beacon_rx; mWifiInfo.updatePacketRates(stats, mLastLinkLayerStatsUpdate); } else { long mTxPkts = mFacade.getTxPackets(mInterfaceName); long mRxPkts = mFacade.getRxPackets(mInterfaceName); mWifiInfo.updatePacketRates(mTxPkts, mRxPkts, mLastLinkLayerStatsUpdate); } mWifiMetrics.incrementWifiLinkLayerUsageStats(mInterfaceName, stats); return stats; } /** * Update interface capabilities * This method is used to update some of interface capabilities defined in overlay */ private void updateInterfaceCapabilities() { DeviceWiphyCapabilities cap = getDeviceWiphyCapabilities(); if (cap != null) { // Some devices don't have support of 11ax indicated by the chip, // so an override config value is used if (mContext.getResources().getBoolean(R.bool.config_wifi11axSupportOverride)) { cap.setWifiStandardSupport(ScanResult.WIFI_STANDARD_11AX, true); } mWifiNative.setDeviceWiphyCapabilities(mInterfaceName, cap); } } @Override public DeviceWiphyCapabilities getDeviceWiphyCapabilities() { return mWifiNative.getDeviceWiphyCapabilities(mInterfaceName); } /** * Check if a Wi-Fi standard is supported * * @param standard A value from {@link ScanResult}'s {@code WIFI_STANDARD_} * @return {@code true} if standard is supported, {@code false} otherwise. */ public boolean isWifiStandardSupported(@WifiStandard int standard) { return mWifiNative.isWifiStandardSupported(mInterfaceName, standard); } private byte[] getDstMacForKeepalive(KeepalivePacketData packetData) throws InvalidPacketException { try { InetAddress gateway = NetUtils.selectBestRoute( mLinkProperties.getRoutes(), packetData.getDstAddress()).getGateway(); String dstMacStr = macAddressFromRoute(gateway.getHostAddress()); return NativeUtil.macAddressToByteArray(dstMacStr); } catch (NullPointerException | IllegalArgumentException e) { throw new InvalidPacketException(InvalidPacketException.ERROR_INVALID_IP_ADDRESS); } } private static int getEtherProtoForKeepalive(KeepalivePacketData packetData) throws InvalidPacketException { if (packetData.getDstAddress() instanceof Inet4Address) { return OsConstants.ETH_P_IP; } else if (packetData.getDstAddress() instanceof Inet6Address) { return OsConstants.ETH_P_IPV6; } else { throw new InvalidPacketException(InvalidPacketException.ERROR_INVALID_IP_ADDRESS); } } private int startWifiIPPacketOffload(int slot, KeepalivePacketData packetData, int intervalSeconds) { byte[] packet = null; byte[] dstMac = null; int proto = 0; try { packet = packetData.getPacket(); dstMac = getDstMacForKeepalive(packetData); proto = getEtherProtoForKeepalive(packetData); } catch (InvalidPacketException e) { return e.getError(); } int ret = mWifiNative.startSendingOffloadedPacket( mInterfaceName, slot, dstMac, packet, proto, intervalSeconds * 1000); if (ret != 0) { loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds + "): hardware error " + ret); return SocketKeepalive.ERROR_HARDWARE_ERROR; } else { return SocketKeepalive.SUCCESS; } } private int stopWifiIPPacketOffload(int slot) { int ret = mWifiNative.stopSendingOffloadedPacket(mInterfaceName, slot); if (ret != 0) { loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret); return SocketKeepalive.ERROR_HARDWARE_ERROR; } else { return SocketKeepalive.SUCCESS; } } private int startRssiMonitoringOffload(byte maxRssi, byte minRssi, WifiNative.WifiRssiEventHandler rssiHandler) { return mWifiNative.startRssiMonitoring(mInterfaceName, maxRssi, minRssi, rssiHandler); } private int stopRssiMonitoringOffload() { return mWifiNative.stopRssiMonitoring(mInterfaceName); } @Override public boolean isConnected() { return getCurrentState() == mL3ConnectedState; } @Override public boolean isConnecting() { IState state = getCurrentState(); return state == mL2ConnectingState || state == mL2ConnectedState || state == mL3ProvisioningState; } @Override public boolean isRoaming() { return getCurrentState() == mRoamingState; } @Override public boolean isDisconnected() { return getCurrentState() == mDisconnectedState; } /** * Method checking if supplicant is in a transient state * * @return boolean true if in transient state */ public boolean isSupplicantTransientState() { SupplicantState supplicantState = mWifiInfo.getSupplicantState(); if (supplicantState == SupplicantState.ASSOCIATING || supplicantState == SupplicantState.AUTHENTICATING || supplicantState == SupplicantState.FOUR_WAY_HANDSHAKE || supplicantState == SupplicantState.GROUP_HANDSHAKE) { if (mVerboseLoggingEnabled) { Log.d(getTag(), "Supplicant is under transient state: " + supplicantState); } return true; } else { if (mVerboseLoggingEnabled) { Log.d(getTag(), "Supplicant is under steady state: " + supplicantState); } } return false; } /** * Get status information for the current connection, if any. * Note: This call is synchronized and hence safe to call from any thread (if called from wifi * thread, will execute synchronously). * * @return a {@link WifiInfo} object containing information about the current connection * TODO (b/173551144): Change to direct call. Let callers use WifiThreadRunner if necessary. */ @Override public WifiInfo syncRequestConnectionInfo() { return mWifiThreadRunner.call(() -> new WifiInfo(mWifiInfo), new WifiInfo()); } /** * Blocking call to get the current DHCP results * * @return DhcpResultsParcelable current results */ @NonNull public DhcpResultsParcelable syncGetDhcpResultsParcelable() { synchronized (mDhcpResultsParcelableLock) { return mDhcpResultsParcelable; } } /** * When the underlying interface is destroyed, we must immediately tell connectivity service to * mark network agent as disconnected and stop the ip client. */ public void handleIfaceDestroyed() { handleNetworkDisconnect(false, WifiStatsLog.WIFI_DISCONNECT_REPORTED__FAILURE_CODE__IFACE_DESTROYED); } /** Stop this ClientModeImpl. Do not interact with ClientModeImpl after it has been stopped. */ public void stop() { mSupplicantStateTracker.stop(); mWifiScoreCard.noteWifiDisabled(mWifiInfo); // capture StateMachine LogRecs since we will lose them after we call quitNow() // This is used for debugging. mObituary = new StateMachineObituary(this); // quit discarding all unprocessed messages - this is to preserve the legacy behavior of // using sendMessageAtFrontOfQueue(CMD_SET_OPERATIONAL_MODE) which would force a state // transition immediately quitNow(); mWifiConfigManager.removeOnNetworkUpdateListener(mOnNetworkUpdateListener); mWifiCarrierInfoManager .removeOnCarrierOffloadDisabledListener(mOnCarrierOffloadDisabledListener); if (mVcnPolicyChangeListener != null) { mVcnManager.removeVcnNetworkPolicyChangeListener(mVcnPolicyChangeListener); mVcnPolicyChangeListener = null; } } private void checkAbnormalConnectionFailureAndTakeBugReport(String ssid) { if (mDeviceConfigFacade.isAbnormalConnectionFailureBugreportEnabled()) { int reasonCode = mWifiScoreCard.detectAbnormalConnectionFailure(ssid); if (reasonCode != WifiHealthMonitor.REASON_NO_FAILURE) { String bugTitle = "Wi-Fi BugReport"; String bugDetail = "Detect abnormal " + WifiHealthMonitor.FAILURE_REASON_NAME[reasonCode]; mWifiDiagnostics.takeBugReport(bugTitle, bugDetail); } } } private void checkAbnormalDisconnectionAndTakeBugReport() { if (mDeviceConfigFacade.isAbnormalDisconnectionBugreportEnabled()) { int reasonCode = mWifiScoreCard.detectAbnormalDisconnection(mInterfaceName); if (reasonCode != WifiHealthMonitor.REASON_NO_FAILURE) { String bugTitle = "Wi-Fi BugReport"; String bugDetail = "Detect abnormal " + WifiHealthMonitor.FAILURE_REASON_NAME[reasonCode]; mWifiDiagnostics.takeBugReport(bugTitle, bugDetail); } } } /** * Retrieve the WifiMulticastLockManager.FilterController callback for registration. */ public WifiMulticastLockManager.FilterController getMcastLockManagerFilterController() { return mMcastLockManagerFilterController; } /** * Blocking method to retrieve the passpoint icon. * * @param bssid representation of the bssid as a long * @param fileName name of the file * * @return boolean returning the result of the call */ public boolean syncQueryPasspointIcon(long bssid, String fileName) { return mWifiThreadRunner.call( () -> mPasspointManager.queryPasspointIcon(bssid, fileName), false); } @Override public boolean requestAnqp(String bssid, Set anqpIds, Set hs20Subtypes) { return mWifiNative.requestAnqp(mInterfaceName, bssid, anqpIds, hs20Subtypes); } @Override public boolean requestVenueUrlAnqp(String bssid) { return mWifiNative.requestVenueUrlAnqp(mInterfaceName, bssid); } @Override public boolean requestIcon(String bssid, String fileName) { return mWifiNative.requestIcon(mInterfaceName, bssid, fileName); } /** * Disconnect from Access Point */ public void disconnect() { sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_GENERIC); } /** * Initiate a reconnection to AP */ public void reconnect(WorkSource workSource) { sendMessage(CMD_RECONNECT, workSource); } /** * Initiate a re-association to AP */ public void reassociate() { sendMessage(CMD_REASSOCIATE); } /** * Start subscription provisioning synchronously * * @param provider {@link OsuProvider} the provider to provision with * @param callback {@link IProvisioningCallback} callback for provisioning status * @return boolean true indicates provisioning was started, false otherwise */ public boolean syncStartSubscriptionProvisioning(int callingUid, OsuProvider provider, IProvisioningCallback callback) { return mWifiThreadRunner.call( () -> mPasspointManager.startSubscriptionProvisioning( callingUid, provider, callback), false); } /** * Get the supported feature set synchronously */ public long getSupportedFeatures() { return mWifiNative.getSupportedFeatureSet(mInterfaceName); } /** * Method to enable/disable RSSI polling * @param enabled boolean idicating if polling should start */ @VisibleForTesting public void enableRssiPolling(boolean enabled) { sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); } /** * reset cached SIM credential data */ public void resetSimAuthNetworks(@ResetSimReason int resetReason) { sendMessage(CMD_RESET_SIM_NETWORKS, resetReason); } /** * Should only be used internally. * External callers should use {@link #syncGetCurrentNetwork()}. */ private Network getCurrentNetwork() { if (mNetworkAgent != null) { return mNetworkAgent.getNetwork(); } else { return null; } } /** * Get Network object of currently connected wifi network, or null if not connected. * @return Network object of current wifi network */ public Network syncGetCurrentNetwork() { return mWifiThreadRunner.call( () -> { if (getCurrentState() == mL3ConnectedState || getCurrentState() == mRoamingState) { return getCurrentNetwork(); } return null; }, null); } /** * Enable TDLS for a specific MAC address */ public void enableTdls(String remoteMacAddress, boolean enable) { mWifiNative.startTdls(mInterfaceName, remoteMacAddress, enable); } /** Send a message indicating bluetooth connection state changed, e.g. connected/disconnected */ public void onBluetoothConnectionStateChanged() { sendMessage(CMD_BLUETOOTH_CONNECTION_STATE_CHANGE); } /** * Trigger dump on the class IpClient object. */ public void dumpIpClient(FileDescriptor fd, PrintWriter pw, String[] args) { if (mIpClient != null) { // All dumpIpClient does is print this log message. // TODO: consider deleting this, since it's not useful. pw.println("IpClient logs have moved to dumpsys network_stack"); } } private static String dhcpResultsParcelableToString(DhcpResultsParcelable dhcpResults) { return new StringBuilder() .append("baseConfiguration ").append(dhcpResults.baseConfiguration) .append("leaseDuration ").append(dhcpResults.leaseDuration) .append("mtu ").append(dhcpResults.mtu) .append("serverAddress ").append(dhcpResults.serverAddress) .append("serverHostName ").append(dhcpResults.serverHostName) .append("vendorInfo ").append(dhcpResults.vendorInfo) .toString(); } @Override public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { pw.println("Dump of ClientModeImpl id=" + mId); if (mObituary == null) { // StateMachine hasn't quit yet, dump `this` via StateMachineObituary's dump() // method for consistency with `else` branch. new StateMachineObituary(this).dump(fd, pw, args); } else { // StateMachine has quit and cleared all LogRecs. // Get them from the obituary instead. mObituary.dump(fd, pw, args); } mSupplicantStateTracker.dump(fd, pw, args); // Polls link layer stats and RSSI. This allows the stats to show up in // WifiScoreReport's dump() output when taking a bug report even if the screen is off. updateLinkLayerStatsRssiAndScoreReport(); pw.println("mLinkProperties " + mLinkProperties); pw.println("mWifiInfo " + mWifiInfo); pw.println("mDhcpResultsParcelable " + dhcpResultsParcelableToString(mDhcpResultsParcelable)); pw.println("mLastSignalLevel " + mLastSignalLevel); pw.println("mLastTxKbps " + mLastTxKbps); pw.println("mLastRxKbps " + mLastRxKbps); pw.println("mLastBssid " + mLastBssid); pw.println("mLastNetworkId " + mLastNetworkId); pw.println("mLastSubId " + mLastSubId); pw.println("mLastSimBasedConnectionCarrierName " + mLastSimBasedConnectionCarrierName); pw.println("mSuspendOptimizationsEnabled " + mContext.getResources().getBoolean( R.bool.config_wifiSuspendOptimizationsEnabled)); pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); dumpIpClient(fd, pw, args); pw.println("WifiScoreReport:"); mWifiScoreReport.dump(fd, pw, args); pw.println(); } /** * ****************************************************** * Internal private functions * ****************************************************** */ private void logStateAndMessage(Message message, State state) { mMessageHandlingStatus = 0; if (mVerboseLoggingEnabled) { logd(" " + state.getClass().getSimpleName() + " " + getLogRecString(message)); } } @Override protected boolean recordLogRec(Message msg) { switch (msg.what) { case CMD_RSSI_POLL: return mVerboseLoggingEnabled; default: return true; } } /** * Return the additional string to be logged by LogRec, default * * @param msg that was processed * @return information to be logged as a String */ @Override protected String getLogRecString(Message msg) { WifiConfiguration config; Long now; String report; String key; StringBuilder sb = new StringBuilder(); sb.append("screen=").append(mScreenOn ? "on" : "off"); if (mMessageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) { sb.append("(").append(mMessageHandlingStatus).append(")"); } if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) { sb.append(" uid=" + msg.sendingUid); } switch (msg.what) { case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); StateChangeResult stateChangeResult = (StateChangeResult) msg.obj; if (stateChangeResult != null) { sb.append(stateChangeResult.toString()); } break; case CMD_CONNECT_NETWORK: case CMD_SAVE_NETWORK: { ConnectNetworkMessage cnm = (ConnectNetworkMessage) msg.obj; sb.append(" "); sb.append(cnm.result.getNetworkId()); config = mWifiConfigManager.getConfiguredNetwork(cnm.result.getNetworkId()); if (config != null) { sb.append(" ").append(config.getProfileKey()); sb.append(" nid=").append(config.networkId); if (config.hiddenSSID) { sb.append(" hidden"); } if (config.preSharedKey != null && !config.preSharedKey.equals("*")) { sb.append(" hasPSK"); } if (config.ephemeral) { sb.append(" ephemeral"); } sb.append(" cuid=").append(config.creatorUid); sb.append(" suid=").append(config.lastUpdateUid); } break; } case WifiMonitor.ASSOCIATION_REJECTION_EVENT: if (msg.obj != null) { sb.append(" ").append((AssocRejectEventInfo) msg.obj); } break; case WifiMonitor.NETWORK_CONNECTION_EVENT: { NetworkConnectionEventInfo connectionInfo = (NetworkConnectionEventInfo) msg.obj; sb.append(" "); sb.append(connectionInfo.networkId); sb.append(" "); sb.append(connectionInfo.isFilsConnection); sb.append(" ").append(mLastBssid); sb.append(" nid=").append(mLastNetworkId); config = getConnectedWifiConfigurationInternal(); if (config != null) { sb.append(" ").append(config.getProfileKey()); } key = mWifiConfigManager.getLastSelectedNetworkConfigKey(); if (key != null) { sb.append(" last=").append(key); } break; } case WifiMonitor.TARGET_BSSID_EVENT: case WifiMonitor.ASSOCIATED_BSSID_EVENT: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); if (msg.obj != null) { sb.append(" BSSID=").append((String) msg.obj); } if (mTargetBssid != null) { sb.append(" Target=").append(mTargetBssid); } sb.append(" roam=").append(Boolean.toString(mIsAutoRoaming)); break; case WifiMonitor.NETWORK_DISCONNECTION_EVENT: if (msg.obj != null) { sb.append(" ").append((DisconnectEventInfo) msg.obj); } if (mLastBssid != null) { sb.append(" lastbssid=").append(mLastBssid); } if (mWifiInfo.getFrequency() != -1) { sb.append(" freq=").append(mWifiInfo.getFrequency()); sb.append(" rssi=").append(mWifiInfo.getRssi()); } break; case CMD_RSSI_POLL: case CMD_ONESHOT_RSSI_POLL: case CMD_UNWANTED_NETWORK: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); if (mWifiInfo.getSSID() != null) { if (mWifiInfo.getSSID() != null) { sb.append(" ").append(mWifiInfo.getSSID()); } } if (mWifiInfo.getBSSID() != null) { sb.append(" ").append(mWifiInfo.getBSSID()); } sb.append(" rssi=").append(mWifiInfo.getRssi()); sb.append(" f=").append(mWifiInfo.getFrequency()); sb.append(" sc=").append(mWifiInfo.getScore()); sb.append(" link=").append(mWifiInfo.getLinkSpeed()); sb.append(String.format(" tx=%.1f,", mWifiInfo.getSuccessfulTxPacketsPerSecond())); sb.append(String.format(" %.1f,", mWifiInfo.getRetriedTxPacketsPerSecond())); sb.append(String.format(" %.1f ", mWifiInfo.getLostTxPacketsPerSecond())); sb.append(String.format(" rx=%.1f", mWifiInfo.getSuccessfulRxPacketsPerSecond())); sb.append(String.format(" bcn=%d", mRunningBeaconCount)); report = reportOnTime(); if (report != null) { sb.append(" ").append(report); } sb.append(String.format(" score=%d", mWifiInfo.getScore())); break; case CMD_START_CONNECT: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); config = mWifiConfigManager.getConfiguredNetwork(msg.arg1); if (config != null) { sb.append(" targetConfigKey=").append(config.getProfileKey()); sb.append(" BSSID=" + config.BSSID); } if (mTargetBssid != null) { sb.append(" targetBssid=").append(mTargetBssid); } sb.append(" roam=").append(Boolean.toString(mIsAutoRoaming)); config = getConnectedWifiConfigurationInternal(); if (config != null) { sb.append(" currentConfigKey=").append(config.getProfileKey()); } break; case CMD_START_ROAM: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); String bssid = (String) msg.obj; sb.append(" bssid=").append(bssid); if (mTargetBssid != null) { sb.append(" ").append(mTargetBssid); } sb.append(" roam=").append(Boolean.toString(mIsAutoRoaming)); sb.append(" fail count=").append(Integer.toString(mRoamFailCount)); break; case CMD_PRE_DHCP_ACTION: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); sb.append(" txpkts=").append(mWifiInfo.txSuccess); sb.append(",").append(mWifiInfo.txBad); sb.append(",").append(mWifiInfo.txRetries); break; case CMD_POST_DHCP_ACTION: if (mLinkProperties != null) { sb.append(" "); sb.append(getLinkPropertiesSummary(mLinkProperties)); } break; case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); if (msg.obj != null) { NetworkInfo info = (NetworkInfo) msg.obj; NetworkInfo.State state = info.getState(); NetworkInfo.DetailedState detailedState = info.getDetailedState(); if (state != null) { sb.append(" st=").append(state); } if (detailedState != null) { sb.append("/").append(detailedState); } } break; case CMD_IP_CONFIGURATION_LOST: int count = -1; WifiConfiguration c = getConnectedWifiConfigurationInternal(); if (c != null) { count = c.getNetworkSelectionStatus().getDisableReasonCounter( WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); } sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); sb.append(" failures: "); sb.append(Integer.toString(count)); sb.append("/"); sb.append(Integer.toString(mFacade.getIntegerSetting( mContext, Settings.Global.WIFI_MAX_DHCP_RETRY_COUNT, 0))); if (mWifiInfo.getBSSID() != null) { sb.append(" ").append(mWifiInfo.getBSSID()); } sb.append(String.format(" bcn=%d", mRunningBeaconCount)); break; case CMD_UPDATE_LINKPROPERTIES: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); if (mLinkProperties != null) { sb.append(" "); sb.append(getLinkPropertiesSummary(mLinkProperties)); } break; case CMD_IP_REACHABILITY_LOST: if (msg.obj != null) { sb.append(" ").append((String) msg.obj); } break; case CMD_INSTALL_PACKET_FILTER: sb.append(" len=" + ((byte[]) msg.obj).length); break; case CMD_SET_FALLBACK_PACKET_FILTERING: sb.append(" enabled=" + (boolean) msg.obj); break; case CMD_ROAM_WATCHDOG_TIMER: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); sb.append(" cur=").append(mRoamWatchdogCount); break; case CMD_CONNECTING_WATCHDOG_TIMER: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); sb.append(" cur=").append(mConnectingWatchdogCount); break; case CMD_START_RSSI_MONITORING_OFFLOAD: case CMD_STOP_RSSI_MONITORING_OFFLOAD: case CMD_RSSI_THRESHOLD_BREACHED: sb.append(" rssi="); sb.append(Integer.toString(msg.arg1)); sb.append(" thresholds="); sb.append(Arrays.toString(mRssiRanges)); break; case CMD_IPV4_PROVISIONING_SUCCESS: sb.append(" "); sb.append(/* DhcpResultsParcelable */ msg.obj); break; case WifiMonitor.MBO_OCE_BSS_TM_HANDLING_DONE: BtmFrameData frameData = (BtmFrameData) msg.obj; if (frameData != null) { sb.append(" ").append(frameData.toString()); } break; case WifiMonitor.NETWORK_NOT_FOUND_EVENT: sb.append(" ssid=" + msg.obj); break; default: sb.append(" "); sb.append(Integer.toString(msg.arg1)); sb.append(" "); sb.append(Integer.toString(msg.arg2)); break; } return sb.toString(); } @Override protected String getWhatToString(int what) { switch (what) { case CMD_ACCEPT_UNVALIDATED: return "CMD_ACCEPT_UNVALIDATED"; case CMD_ADD_KEEPALIVE_PACKET_FILTER_TO_APF: return "CMD_ADD_KEEPALIVE_PACKET_FILTER_TO_APF"; case CMD_BLUETOOTH_CONNECTION_STATE_CHANGE: return "CMD_BLUETOOTH_CONNECTION_STATE_CHANGE"; case CMD_CONFIG_ND_OFFLOAD: return "CMD_CONFIG_ND_OFFLOAD"; case CMD_CONNECTING_WATCHDOG_TIMER: return "CMD_CONNECTING_WATCHDOG_TIMER"; case CMD_CONNECT_NETWORK: return "CMD_CONNECT_NETWORK"; case CMD_DIAGS_CONNECT_TIMEOUT: return "CMD_DIAGS_CONNECT_TIMEOUT"; case CMD_DISCONNECT: return "CMD_DISCONNECT"; case CMD_ENABLE_RSSI_POLL: return "CMD_ENABLE_RSSI_POLL"; case CMD_INSTALL_PACKET_FILTER: return "CMD_INSTALL_PACKET_FILTER"; case CMD_IP_CONFIGURATION_LOST: return "CMD_IP_CONFIGURATION_LOST"; case CMD_IP_CONFIGURATION_SUCCESSFUL: return "CMD_IP_CONFIGURATION_SUCCESSFUL"; case CMD_IP_REACHABILITY_LOST: return "CMD_IP_REACHABILITY_LOST"; case CMD_IPV4_PROVISIONING_FAILURE: return "CMD_IPV4_PROVISIONING_FAILURE"; case CMD_IPV4_PROVISIONING_SUCCESS: return "CMD_IPV4_PROVISIONING_SUCCESS"; case CMD_NETWORK_STATUS: return "CMD_NETWORK_STATUS"; case CMD_ONESHOT_RSSI_POLL: return "CMD_ONESHOT_RSSI_POLL"; case CMD_POST_DHCP_ACTION: return "CMD_POST_DHCP_ACTION"; case CMD_PRE_DHCP_ACTION: return "CMD_PRE_DHCP_ACTION"; case CMD_PRE_DHCP_ACTION_COMPLETE: return "CMD_PRE_DHCP_ACTION_COMPLETE"; case CMD_READ_PACKET_FILTER: return "CMD_READ_PACKET_FILTER"; case CMD_REASSOCIATE: return "CMD_REASSOCIATE"; case CMD_RECONNECT: return "CMD_RECONNECT"; case CMD_REMOVE_KEEPALIVE_PACKET_FILTER_FROM_APF: return "CMD_REMOVE_KEEPALIVE_PACKET_FILTER_FROM_APF"; case CMD_RESET_SIM_NETWORKS: return "CMD_RESET_SIM_NETWORKS"; case CMD_ROAM_WATCHDOG_TIMER: return "CMD_ROAM_WATCHDOG_TIMER"; case CMD_RSSI_POLL: return "CMD_RSSI_POLL"; case CMD_RSSI_THRESHOLD_BREACHED: return "CMD_RSSI_THRESHOLD_BREACHED"; case CMD_SAVE_NETWORK: return "CMD_SAVE_NETWORK"; case CMD_SCREEN_STATE_CHANGED: return "CMD_SCREEN_STATE_CHANGED"; case CMD_SET_FALLBACK_PACKET_FILTERING: return "CMD_SET_FALLBACK_PACKET_FILTERING"; case CMD_SET_SUSPEND_OPT_ENABLED: return "CMD_SET_SUSPEND_OPT_ENABLED"; case CMD_START_CONNECT: return "CMD_START_CONNECT"; case CMD_START_FILS_CONNECTION: return "CMD_START_FILS_CONNECTION"; case CMD_START_IP_PACKET_OFFLOAD: return "CMD_START_IP_PACKET_OFFLOAD"; case CMD_START_ROAM: return "CMD_START_ROAM"; case CMD_START_RSSI_MONITORING_OFFLOAD: return "CMD_START_RSSI_MONITORING_OFFLOAD"; case CMD_STOP_IP_PACKET_OFFLOAD: return "CMD_STOP_IP_PACKET_OFFLOAD"; case CMD_STOP_RSSI_MONITORING_OFFLOAD: return "CMD_STOP_RSSI_MONITORING_OFFLOAD"; case CMD_UNWANTED_NETWORK: return "CMD_UNWANTED_NETWORK"; case CMD_UPDATE_LINKPROPERTIES: return "CMD_UPDATE_LINKPROPERTIES"; case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: return "SUPPLICANT_STATE_CHANGE_EVENT"; case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: return "AUTHENTICATION_FAILURE_EVENT"; case WifiMonitor.SUP_REQUEST_IDENTITY: return "SUP_REQUEST_IDENTITY"; case WifiMonitor.NETWORK_CONNECTION_EVENT: return "NETWORK_CONNECTION_EVENT"; case WifiMonitor.NETWORK_DISCONNECTION_EVENT: return "NETWORK_DISCONNECTION_EVENT"; case WifiMonitor.ASSOCIATION_REJECTION_EVENT: return "ASSOCIATION_REJECTION_EVENT"; case WifiMonitor.ANQP_DONE_EVENT: return "ANQP_DONE_EVENT"; case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: return "RX_HS20_ANQP_ICON_EVENT"; case WifiMonitor.GAS_QUERY_DONE_EVENT: return "GAS_QUERY_DONE_EVENT"; case WifiMonitor.HS20_REMEDIATION_EVENT: return "HS20_REMEDIATION_EVENT"; case WifiMonitor.HS20_DEAUTH_IMMINENT_EVENT: return "HS20_DEAUTH_IMMINENT_EVENT"; case WifiMonitor.HS20_TERMS_AND_CONDITIONS_ACCEPTANCE_REQUIRED_EVENT: return "HS20_TERMS_AND_CONDITIONS_ACCEPTANCE_REQUIRED_EVENT"; case WifiMonitor.GAS_QUERY_START_EVENT: return "GAS_QUERY_START_EVENT"; case WifiMonitor.MBO_OCE_BSS_TM_HANDLING_DONE: return "MBO_OCE_BSS_TM_HANDLING_DONE"; case WifiMonitor.TRANSITION_DISABLE_INDICATION: return "TRANSITION_DISABLE_INDICATION"; case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT: return "GROUP_CREATING_TIMED_OUT"; case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: return "P2P_CONNECTION_CHANGED"; case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: return "DISCONNECT_WIFI_REQUEST"; case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE: return "DISCONNECT_WIFI_RESPONSE"; case WifiP2pServiceImpl.SET_MIRACAST_MODE: return "SET_MIRACAST_MODE"; case WifiP2pServiceImpl.BLOCK_DISCOVERY: return "BLOCK_DISCOVERY"; case WifiMonitor.NETWORK_NOT_FOUND_EVENT: return "NETWORK_NOT_FOUND_EVENT"; default: return "what:" + what; } } /** Check whether this connection is the primary connection on the device. */ private boolean isPrimary() { return mClientModeManager.getRole() == ROLE_CLIENT_PRIMARY; } private void handleScreenStateChanged(boolean screenOn) { mScreenOn = screenOn; if (mVerboseLoggingEnabled) { logd(" handleScreenStateChanged Enter: screenOn=" + screenOn + " mSuspendOptimizationsEnabled=" + mContext.getResources().getBoolean( R.bool.config_wifiSuspendOptimizationsEnabled) + " state " + getCurrentState().getName()); } if (isPrimary()) { // Only enable RSSI polling on primary STA, none of the secondary STA use-cases // can become the default route when other networks types that provide internet // connectivity (e.g. cellular) are available. So, no point in scoring // these connections for the purpose of switching between wifi and other network // types. // TODO(b/179518316): Enable this for secondary transient STA also if external scorer // is in charge of MBB. enableRssiPolling(screenOn); } if (mContext.getResources().getBoolean(R.bool.config_wifiSuspendOptimizationsEnabled)) { int shouldReleaseWakeLock = 0; if (screenOn) { sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, shouldReleaseWakeLock); } else { if (isConnected()) { // Allow 2s for suspend optimizations to be set mSuspendWakeLock.acquire(2000); shouldReleaseWakeLock = 1; } sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, shouldReleaseWakeLock); } } getWifiLinkLayerStats(); mOnTimeScreenStateChange = mOnTime; mLastScreenStateChangeTimeStamp = mLastLinkLayerStatsUpdate; if (mVerboseLoggingEnabled) log("handleScreenStateChanged Exit: " + screenOn); } private void setSuspendOptimizationsNative(int reason, boolean enabled) { if (mVerboseLoggingEnabled) { log("setSuspendOptimizationsNative: " + reason + " " + enabled + " -want " + mContext.getResources().getBoolean( R.bool.config_wifiSuspendOptimizationsEnabled) + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); } //mWifiNative.setSuspendOptimizations(enabled); if (enabled) { mSuspendOptNeedsDisabled &= ~reason; /* None of dhcp, screen or highperf need it disabled and user wants it enabled */ if (mSuspendOptNeedsDisabled == 0 && mContext.getResources().getBoolean( R.bool.config_wifiSuspendOptimizationsEnabled)) { if (mVerboseLoggingEnabled) { log("setSuspendOptimizationsNative do it " + reason + " " + enabled + " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName() + " - " + Thread.currentThread().getStackTrace()[3].getMethodName() + " - " + Thread.currentThread().getStackTrace()[4].getMethodName() + " - " + Thread.currentThread().getStackTrace()[5].getMethodName()); } mWifiNative.setSuspendOptimizations(mInterfaceName, true); } } else { mSuspendOptNeedsDisabled |= reason; mWifiNative.setSuspendOptimizations(mInterfaceName, false); } } /** * Makes a record of the user intent about suspend optimizations. */ private void setSuspendOptimizations(int reason, boolean enabled) { if (mVerboseLoggingEnabled) log("setSuspendOptimizations: " + reason + " " + enabled); if (enabled) { mSuspendOptNeedsDisabled &= ~reason; } else { mSuspendOptNeedsDisabled |= reason; } if (mVerboseLoggingEnabled) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); } /* * Fetch link layer stats, RSSI, linkspeed, and frequency on current connection * and update Network capabilities */ private WifiLinkLayerStats updateLinkLayerStatsRssiSpeedFrequencyCapabilities() { WifiLinkLayerStats stats = getWifiLinkLayerStats(); WifiNl80211Manager.SignalPollResult pollResult = mWifiNative.signalPoll(mInterfaceName); if (pollResult == null) { return stats; } int newRssi = pollResult.currentRssiDbm; int newTxLinkSpeed = pollResult.txBitrateMbps; int newFrequency = pollResult.associationFrequencyMHz; int newRxLinkSpeed = pollResult.rxBitrateMbps; if (mVerboseLoggingEnabled) { logd("updateLinkLayerStatsRssiSpeedFrequencyCapabilities rssi=" + newRssi + " TxLinkspeed=" + newTxLinkSpeed + " freq=" + newFrequency + " RxLinkSpeed=" + newRxLinkSpeed); } /* * set Tx link speed only if it is valid */ if (newTxLinkSpeed > 0) { mWifiInfo.setLinkSpeed(newTxLinkSpeed); mWifiInfo.setTxLinkSpeedMbps(newTxLinkSpeed); } /* * set Rx link speed only if it is valid */ if (newRxLinkSpeed > 0) { mWifiInfo.setRxLinkSpeedMbps(newRxLinkSpeed); } if (newFrequency > 0) { mWifiInfo.setFrequency(newFrequency); } // updateLinkBandwidth() requires the latest frequency information if (newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) { /* * Positive RSSI is possible when devices are close(~0m apart) to each other. * And there are some driver/firmware implementation, where they avoid * reporting large negative rssi values by adding 256. * so adjust the valid rssi reports for such implementations. */ if (newRssi > (WifiInfo.INVALID_RSSI + 256)) { Log.wtf(getTag(), "Error! +ve value RSSI: " + newRssi); newRssi -= 256; } mWifiInfo.setRssi(newRssi); /* * Rather then sending the raw RSSI out every time it * changes, we precalculate the signal level that would * be displayed in the status bar, and only send the * broadcast if that much more coarse-grained number * changes. This cuts down greatly on the number of * broadcasts, at the cost of not informing others * interested in RSSI of all the changes in signal * level. */ int newSignalLevel = RssiUtil.calculateSignalLevel(mContext, newRssi); if (newSignalLevel != mLastSignalLevel) { // TODO (b/162602799): Do we need to change the update frequency? sendRssiChangeBroadcast(newRssi); } updateLinkBandwidthAndCapabilities(stats, newSignalLevel != mLastSignalLevel); mLastSignalLevel = newSignalLevel; } else { mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); updateCapabilities(); } mWifiConfigManager.updateScanDetailCacheFromWifiInfo(mWifiInfo); /* * Increment various performance metrics */ mWifiMetrics.handlePollResult(mInterfaceName, mWifiInfo); return stats; } // Update the link bandwidth. If the link bandwidth changes by a large amount or signal level // changes, also update network capabilities. private void updateLinkBandwidthAndCapabilities(WifiLinkLayerStats stats, boolean hasSignalLevelChanged) { WifiScoreCard.PerNetwork network = mWifiScoreCard.lookupNetwork(mWifiInfo.getSSID()); network.updateLinkBandwidth(mLastLinkLayerStats, stats, mWifiInfo); int newTxKbps = network.getTxLinkBandwidthKbps(); int newRxKbps = network.getRxLinkBandwidthKbps(); int txDeltaKbps = Math.abs(newTxKbps - mLastTxKbps); int rxDeltaKbps = Math.abs(newRxKbps - mLastRxKbps); int bwUpdateThresholdPercent = mContext.getResources().getInteger( R.integer.config_wifiLinkBandwidthUpdateThresholdPercent); if ((txDeltaKbps * 100 > bwUpdateThresholdPercent * mLastTxKbps) || (rxDeltaKbps * 100 > bwUpdateThresholdPercent * mLastRxKbps) || hasSignalLevelChanged) { mLastTxKbps = newTxKbps; mLastRxKbps = newRxKbps; updateCapabilities(); } int l2TxKbps = mWifiDataStall.getTxThroughputKbps(); int l2RxKbps = mWifiDataStall.getRxThroughputKbps(); if (l2RxKbps < 0 && l2TxKbps > 0) { l2RxKbps = l2TxKbps; } int [] reportedKbps = {mLastTxKbps, mLastRxKbps}; int [] l2Kbps = {l2TxKbps, l2RxKbps}; network.updateBwMetrics(reportedKbps, l2Kbps); } // Polling has completed, hence we won't have a score anymore private void cleanWifiScore() { mWifiInfo.setLostTxPacketsPerSecond(0); mWifiInfo.setSuccessfulTxPacketsPerSecond(0); mWifiInfo.setRetriedTxPacketsRate(0); mWifiInfo.setSuccessfulRxPacketsPerSecond(0); mWifiScoreReport.reset(); mLastLinkLayerStats = null; } private void updateLinkProperties(LinkProperties newLp) { if (mVerboseLoggingEnabled) { log("Link configuration changed for netId: " + mLastNetworkId + " old: " + mLinkProperties + " new: " + newLp); } // We own this instance of LinkProperties because IpClient passes us a copy. mLinkProperties = newLp; if (mNetworkAgent != null) { mNetworkAgent.sendLinkProperties(mLinkProperties); } if (mNetworkAgentState == DetailedState.CONNECTED) { // If anything has changed and we're already connected, send out a notification. // TODO: Update all callers to use NetworkCallbacks and delete this. sendLinkConfigurationChangedBroadcast(); } if (mVerboseLoggingEnabled) { StringBuilder sb = new StringBuilder(); sb.append("updateLinkProperties nid: " + mLastNetworkId); sb.append(" state: " + mNetworkAgentState); if (mLinkProperties != null) { sb.append(" "); sb.append(getLinkPropertiesSummary(mLinkProperties)); } logd(sb.toString()); } } /** * Clears all our link properties. */ private void clearLinkProperties() { // Clear the link properties obtained from DHCP. The only caller of this // function has already called IpClient#stop(), which clears its state. synchronized (mDhcpResultsParcelableLock) { mDhcpResultsParcelable = new DhcpResultsParcelable(); } // Now clear the merged link properties. mLinkProperties.clear(); if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); } private void sendRssiChangeBroadcast(final int newRssi) { mBatteryStatsManager.reportWifiRssiChanged(newRssi); WifiStatsLog.write(WifiStatsLog.WIFI_SIGNAL_STRENGTH_CHANGED, RssiUtil.calculateSignalLevel(mContext, newRssi)); Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION); intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi); mBroadcastQueue.queueOrSendBroadcast( mClientModeManager, () -> mContext.sendBroadcastAsUser(intent, UserHandle.ALL, android.Manifest.permission.ACCESS_WIFI_STATE)); } private void sendLinkConfigurationChangedBroadcast() { Intent intent = new Intent(WifiManager.ACTION_LINK_CONFIGURATION_CHANGED); intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); String summary = "broadcast=ACTION_LINK_CONFIGURATION_CHANGED"; if (mVerboseLoggingEnabled) Log.d(getTag(), "Queuing " + summary); mBroadcastQueue.queueOrSendBroadcast( mClientModeManager, () -> { if (mVerboseLoggingEnabled) Log.d(getTag(), "Sending " + summary); mContext.sendBroadcastAsUser(intent, UserHandle.ALL); }); } /** * Helper method used to send state about supplicant - This is NOT information about the current * wifi connection state. * * TODO: b/79504296 This broadcast has been deprecated and should be removed */ private void sendSupplicantConnectionChangedBroadcast(boolean connected) { Intent intent = new Intent(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION); intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); intent.putExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, connected); String summary = "broadcast=SUPPLICANT_CONNECTION_CHANGE_ACTION" + " EXTRA_SUPPLICANT_CONNECTED=" + connected; if (mVerboseLoggingEnabled) Log.d(getTag(), "Queuing " + summary); mBroadcastQueue.queueOrSendBroadcast( mClientModeManager, () -> { if (mVerboseLoggingEnabled) Log.d(getTag(), "Sending " + summary); mContext.sendBroadcastAsUser(intent, UserHandle.ALL); }); } /** * Record the detailed state of a network. * * @param state the new {@code DetailedState} */ private void sendNetworkChangeBroadcast(NetworkInfo.DetailedState state) { boolean hidden = false; if (mIsAutoRoaming) { // There is generally a confusion in the system about colluding // WiFi Layer 2 state (as reported by supplicant) and the Network state // which leads to multiple confusion. // // If link is roaming, we already have an IP address // as well we were connected and are doing L2 cycles of // reconnecting or renewing IP address to check that we still have it // This L2 link flapping should not be reflected into the Network state // which is the state of the WiFi Network visible to Layer 3 and applications // Note that once roaming is completed, we will // set the Network state to where it should be, or leave it as unchanged // hidden = true; } if (mVerboseLoggingEnabled) { log("sendNetworkChangeBroadcast" + " oldState=" + mNetworkAgentState + " newState=" + state + " hidden=" + hidden); } if (hidden || state == mNetworkAgentState) return; mNetworkAgentState = state; sendNetworkChangeBroadcastWithCurrentState(); } private void sendNetworkChangeBroadcastWithCurrentState() { // copy into local variables to force lambda to capture by value and not reference, since // mNetworkAgentState is mutable and can change final DetailedState networkAgentState = mNetworkAgentState; if (mVerboseLoggingEnabled) { Log.d(getTag(), "Queueing broadcast=NETWORK_STATE_CHANGED_ACTION" + " networkAgentState=" + networkAgentState); } mBroadcastQueue.queueOrSendBroadcast( mClientModeManager, () -> sendNetworkChangeBroadcast( mContext, networkAgentState, mVerboseLoggingEnabled)); } /** Send a NETWORK_STATE_CHANGED_ACTION broadcast. */ public static void sendNetworkChangeBroadcast( Context context, DetailedState networkAgentState, boolean verboseLoggingEnabled) { Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION); intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); NetworkInfo networkInfo = makeNetworkInfo(networkAgentState); intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, networkInfo); if (verboseLoggingEnabled) { Log.d(TAG, "Sending broadcast=NETWORK_STATE_CHANGED_ACTION" + " networkAgentState=" + networkAgentState); } //TODO(b/69974497) This should be non-sticky, but settings needs fixing first. context.sendStickyBroadcastAsUser(intent, UserHandle.ALL); } private static NetworkInfo makeNetworkInfo(DetailedState networkAgentState) { final NetworkInfo ni = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); ni.setDetailedState(networkAgentState, null, null); return ni; } private List findMatchingInfoElements(@Nullable String bssid) { if (bssid == null) return null; ScanResult matchingScanResult = mScanRequestProxy.getScanResult(bssid); if (matchingScanResult == null || matchingScanResult.informationElements == null) { return null; } return Arrays.asList(matchingScanResult.informationElements); } private SupplicantState handleSupplicantStateChange(StateChangeResult stateChangeResult) { SupplicantState state = stateChangeResult.state; mWifiScoreCard.noteSupplicantStateChanging(mWifiInfo, state); // Supplicant state change // [31-13] Reserved for future use // [8 - 0] Supplicant state (as defined in SupplicantState.java) // 50023 supplicant_state_changed (custom|1|5) mWifiInfo.setSupplicantState(state); // Network id and SSID are only valid when we start connecting if (SupplicantState.isConnecting(state)) { mWifiInfo.setNetworkId(stateChangeResult.networkId); mWifiInfo.setBSSID(stateChangeResult.bssid); mWifiInfo.setSSID(stateChangeResult.wifiSsid); if (state == SupplicantState.ASSOCIATED) { updateWifiInfoLinkParamsAfterAssociation(); } mWifiInfo.setInformationElements(findMatchingInfoElements(stateChangeResult.bssid)); } else { // Reset parameters according to WifiInfo.reset() mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); mWifiInfo.setBSSID(null); mWifiInfo.setSSID(null); mWifiInfo.setWifiStandard(ScanResult.WIFI_STANDARD_UNKNOWN); mWifiInfo.setInformationElements(null); mWifiInfo.clearCurrentSecurityType(); } updateLayer2Information(); // SSID might have been updated, so call updateCapabilities updateCapabilities(); WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config == null) { // If not connected, this should be non-null. config = getConnectingWifiConfigurationInternal(); } if (config != null && config.networkId == mWifiInfo.getNetworkId()) { updateWifiInfoWhenConnected(config); // Set meteredHint if scan result says network is expensive ScanDetailCache scanDetailCache = mWifiConfigManager.getScanDetailCacheForNetwork( config.networkId); if (scanDetailCache != null) { ScanDetail scanDetail = scanDetailCache.getScanDetail(stateChangeResult.bssid); if (scanDetail != null) { mWifiInfo.setFrequency(scanDetail.getScanResult().frequency); NetworkDetail networkDetail = scanDetail.getNetworkDetail(); if (networkDetail != null && networkDetail.getAnt() == NetworkDetail.Ant.ChargeablePublic) { mWifiInfo.setMeteredHint(true); } } } } mWifiScoreCard.noteSupplicantStateChanged(mWifiInfo); return state; } private void updateWifiInfoWhenConnected(@NonNull WifiConfiguration config) { mWifiInfo.setEphemeral(config.ephemeral); mWifiInfo.setTrusted(config.trusted); mWifiInfo.setOemPaid(config.oemPaid); mWifiInfo.setOemPrivate(config.oemPrivate); mWifiInfo.setCarrierMerged(config.carrierMerged); mWifiInfo.setSubscriptionId(config.subscriptionId); mWifiInfo.setOsuAp(config.osu); if (config.fromWifiNetworkSpecifier || config.fromWifiNetworkSuggestion) { mWifiInfo.setRequestingPackageName(config.creatorName); } mWifiInfo.setIsPrimary(isPrimary()); SecurityParams securityParams = config.getNetworkSelectionStatus() .getCandidateSecurityParams(); if (securityParams != null) { mWifiInfo.setCurrentSecurityType(securityParams.getSecurityType()); } else { mWifiInfo.clearCurrentSecurityType(); Log.e(TAG, "Network connection candidate with no security parameters"); } } private void updateWifiInfoLinkParamsAfterAssociation() { mLastConnectionCapabilities = mWifiNative.getConnectionCapabilities(mInterfaceName); int maxTxLinkSpeedMbps = mThroughputPredictor.predictMaxTxThroughput( mLastConnectionCapabilities); int maxRxLinkSpeedMbps = mThroughputPredictor.predictMaxRxThroughput( mLastConnectionCapabilities); mWifiInfo.setWifiStandard(mLastConnectionCapabilities.wifiStandard); mWifiInfo.setMaxSupportedTxLinkSpeedMbps(maxTxLinkSpeedMbps); mWifiInfo.setMaxSupportedRxLinkSpeedMbps(maxRxLinkSpeedMbps); mWifiMetrics.setConnectionMaxSupportedLinkSpeedMbps(mInterfaceName, maxTxLinkSpeedMbps, maxRxLinkSpeedMbps); if (mVerboseLoggingEnabled) { StringBuilder sb = new StringBuilder(); logd(sb.append("WifiStandard: ").append(mLastConnectionCapabilities.wifiStandard) .append(" maxTxSpeed: ").append(maxTxLinkSpeedMbps) .append(" maxRxSpeed: ").append(maxRxLinkSpeedMbps) .toString()); } } /** * Tells IpClient what BSSID, L2Key and GroupHint to use for IpMemoryStore. */ private void updateLayer2Information() { if (mIpClient != null) { Pair p = mWifiScoreCard.getL2KeyAndGroupHint(mWifiInfo); if (!p.equals(mLastL2KeyAndGroupHint)) { final MacAddress currentBssid = getMacAddressFromBssidString(mWifiInfo.getBSSID()); final Layer2Information l2Information = new Layer2Information( p.first, p.second, currentBssid); // Update current BSSID on IpClient side whenever l2Key and groupHint // pair changes (i.e. the initial connection establishment or L2 roaming // happened). If we have COMPLETED the roaming to a different BSSID, start // doing DNAv4/DNAv6 -style probing for on-link neighbors of interest (e.g. // routers/DNS servers/default gateway). if (mIpClient.updateLayer2Information(l2Information)) { mLastL2KeyAndGroupHint = p; } else { mLastL2KeyAndGroupHint = null; } } } } private @Nullable Pair mLastL2KeyAndGroupHint = null; /** * Resets the Wi-Fi Connections by clearing any state, resetting any sockets * using the interface, stopping DHCP & disabling interface * * @param disconnectReason must be one of WifiDisconnectReported.FailureReason values * defined in /frameworks/proto_logging/stats/atoms.proto */ private void handleNetworkDisconnect(boolean newConnectionInProgress, int disconnectReason) { mWifiMetrics.reportNetworkDisconnect(mInterfaceName, disconnectReason, mWifiInfo.getRssi(), mWifiInfo.getLinkSpeed()); if (mVerboseLoggingEnabled) { Log.v(getTag(), "handleNetworkDisconnect: newConnectionInProgress: " + newConnectionInProgress, new Throwable()); } WifiConfiguration wifiConfig = getConnectedWifiConfigurationInternal(); if (wifiConfig != null) { ScanResultMatchInfo matchInfo = ScanResultMatchInfo.fromWifiConfiguration(wifiConfig); // WakeupController should only care about the primary, internet providing network if (isPrimary()) { mWakeupController.setLastDisconnectInfo(matchInfo); } } stopRssiMonitoringOffload(); clearTargetBssid("handleNetworkDisconnect"); // Don't stop DHCP if Fils connection is in progress. if (newConnectionInProgress && mIpClientWithPreConnection) { if (mVerboseLoggingEnabled) { log("handleNetworkDisconnect: Don't stop IpClient as fils connection in progress: " + " mLastNetworkId: " + mLastNetworkId + " mTargetNetworkId" + mTargetNetworkId); } } else { stopDhcpSetup(); } // DISASSOC_AP_BUSY could be received in both after L3 connection is successful or right // after BSSID association if the AP can't accept more stations. if (disconnectReason == ReasonCode.DISASSOC_AP_BUSY) { mWifiConfigManager.setRecentFailureAssociationStatus( mWifiInfo.getNetworkId(), WifiConfiguration.RECENT_FAILURE_DISCONNECTION_AP_BUSY); } mWifiScoreReport.stopConnectedNetworkScorer(); /* Reset data structures */ mWifiScoreReport.reset(); mWifiInfo.reset(); /* Reset roaming parameters */ mIsAutoRoaming = false; sendNetworkChangeBroadcast(DetailedState.DISCONNECTED); if (mNetworkAgent != null) { mNetworkAgent.unregister(); mNetworkAgent = null; } /* Clear network properties */ clearLinkProperties(); mLastBssid = null; mLastLinkLayerStats = null; registerDisconnected(); mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; mLastSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID; mLastSimBasedConnectionCarrierName = null; checkAbnormalDisconnectionAndTakeBugReport(); mWifiScoreCard.resetConnectionState(mInterfaceName); updateLayer2Information(); } void handlePreDhcpSetup() { if (!mWifiGlobals.isBluetoothConnected()) { /* * There are problems setting the Wi-Fi driver's power * mode to active when bluetooth coexistence mode is * enabled or sense. *

* We set Wi-Fi to active mode when * obtaining an IP address because we've found * compatibility issues with some routers with low power * mode. *

* In order for this active power mode to properly be set, * we disable coexistence mode until we're done with * obtaining an IP address. One exception is if we * are currently connected to a headset, since disabling * coexistence would interrupt that connection. */ // Disable the coexistence mode mWifiNative.setBluetoothCoexistenceMode( mInterfaceName, WifiNative.BLUETOOTH_COEXISTENCE_MODE_DISABLED); } // Disable power save and suspend optimizations during DHCP // Note: The order here is important for now. Brcm driver changes // power settings when we control suspend mode optimizations. // TODO: Remove this comment when the driver is fixed. setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, false); setPowerSave(false); // Update link layer stats getWifiLinkLayerStats(); if (mWifiP2pConnection.isConnected()) { // P2P discovery breaks DHCP, so shut it down in order to get through this. // Once P2P service receives this message and processes it accordingly, it is supposed // to send arg2 (i.e. CMD_PRE_DHCP_ACTION_COMPLETE) in a new Message.what back to // ClientModeImpl so that we can continue. // TODO(b/159060934): Need to ensure that CMD_PRE_DHCP_ACTION_COMPLETE is sent back to // the ClientModeImpl instance that originally sent it. Right now it is sent back to // all ClientModeImpl instances by WifiP2pConnection. mWifiP2pConnection.sendMessage( WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.ENABLED, CMD_PRE_DHCP_ACTION_COMPLETE); } else { // If the p2p service is not running, we can proceed directly. sendMessage(CMD_PRE_DHCP_ACTION_COMPLETE); } } void addLayer2PacketsToHlpReq(List packets) { List mLayer2Packet = packets; if ((mLayer2Packet != null) && (mLayer2Packet.size() > 0)) { mWifiNative.flushAllHlp(mInterfaceName); for (int j = 0; j < mLayer2Packet.size(); j++) { byte [] bytes = mLayer2Packet.get(j).payload; byte [] payloadBytes = Arrays.copyOfRange(bytes, 12, bytes.length); MacAddress dstAddress = mLayer2Packet.get(j).dstMacAddress; mWifiNative.addHlpReq(mInterfaceName, dstAddress, payloadBytes); } } } void handlePostDhcpSetup() { /* Restore power save and suspend optimizations */ setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); setPowerSave(true); mWifiP2pConnection.sendMessage( WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); // Set the coexistence mode back to its default value mWifiNative.setBluetoothCoexistenceMode( mInterfaceName, WifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); } /** * Set power save mode * * @param ps true to enable power save (default behavior) * false to disable power save. * @return true for success, false for failure */ public boolean setPowerSave(boolean ps) { if (mInterfaceName != null) { if (mVerboseLoggingEnabled) { Log.d(getTag(), "Setting power save for: " + mInterfaceName + " to: " + ps); } mWifiNative.setPowerSave(mInterfaceName, ps); } else { Log.e(getTag(), "Failed to setPowerSave, interfaceName is null"); return false; } return true; } /** * Set low latency mode * * @param enabled true to enable low latency * false to disable low latency (default behavior). * @return true for success, false for failure */ public boolean setLowLatencyMode(boolean enabled) { if (mVerboseLoggingEnabled) { Log.d(getTag(), "Setting low latency mode to " + enabled); } if (!mWifiNative.setLowLatencyMode(enabled)) { Log.e(getTag(), "Failed to setLowLatencyMode"); return false; } return true; } @VisibleForTesting public static final long DIAGS_CONNECT_TIMEOUT_MILLIS = 60 * 1000; /** * Inform other components that a new connection attempt is starting. */ private void reportConnectionAttemptStart( WifiConfiguration config, String targetBSSID, int roamType) { int overlapWithLastConnectionMs = mWifiMetrics.startConnectionEvent(mInterfaceName, config, targetBSSID, roamType); if (mDeviceConfigFacade.isOverlappingConnectionBugreportEnabled() && overlapWithLastConnectionMs > mDeviceConfigFacade.getOverlappingConnectionDurationThresholdMs()) { String bugTitle = "Wi-Fi BugReport"; String bugDetail = "Detect abnormal overlapping connection"; mWifiDiagnostics.takeBugReport(bugTitle, bugDetail); } mWifiDiagnostics.reportConnectionEvent(WifiDiagnostics.CONNECTION_EVENT_STARTED, mClientModeManager); if (isPrimary()) { mWrongPasswordNotifier.onNewConnectionAttempt(); } removeMessages(CMD_DIAGS_CONNECT_TIMEOUT); sendMessageDelayed(CMD_DIAGS_CONNECT_TIMEOUT, DIAGS_CONNECT_TIMEOUT_MILLIS); } private void handleConnectionAttemptEndForDiagnostics(int level2FailureCode) { switch (level2FailureCode) { case WifiMetrics.ConnectionEvent.FAILURE_NONE: break; case WifiMetrics.ConnectionEvent.FAILURE_CONNECT_NETWORK_FAILED: // WifiDiagnostics doesn't care about pre-empted connections, or cases // where we failed to initiate a connection attempt with supplicant. break; default: removeMessages(CMD_DIAGS_CONNECT_TIMEOUT); mWifiDiagnostics.reportConnectionEvent(WifiDiagnostics.CONNECTION_EVENT_FAILED, mClientModeManager); } } /** * Inform other components (WifiMetrics, WifiDiagnostics, WifiConnectivityManager, etc.) that * the current connection attempt has concluded. */ private void reportConnectionAttemptEnd(int level2FailureCode, int connectivityFailureCode, int level2FailureReason) { // if connected, this should be non-null. WifiConfiguration configuration = getConnectedWifiConfigurationInternal(); if (configuration == null) { // If not connected, this should be non-null. configuration = getConnectingWifiConfigurationInternal(); } String bssid = mLastBssid == null ? mTargetBssid : mLastBssid; String ssid = mWifiInfo.getSSID(); if (WifiManager.UNKNOWN_SSID.equals(ssid)) { ssid = getConnectingSsidInternal(); } if (level2FailureCode != WifiMetrics.ConnectionEvent.FAILURE_NONE) { int blocklistReason = convertToWifiBlocklistMonitorFailureReason( level2FailureCode, level2FailureReason); if (blocklistReason != -1) { mWifiScoreCard.noteConnectionFailure(mWifiInfo, mLastScanRssi, ssid, blocklistReason); checkAbnormalConnectionFailureAndTakeBugReport(ssid); mWifiBlocklistMonitor.handleBssidConnectionFailure(bssid, ssid, blocklistReason, mLastScanRssi); WifiScoreCard.NetworkConnectionStats recentStats = mWifiScoreCard.lookupNetwork( ssid).getRecentStats(); if (recentStats.getCount(WifiScoreCard.CNT_CONSECUTIVE_CONNECTION_FAILURE) >= WifiBlocklistMonitor.NUM_CONSECUTIVE_FAILURES_PER_NETWORK_EXP_BACKOFF) { mWifiConfigManager.updateNetworkSelectionStatus(mTargetNetworkId, WifiConfiguration.NetworkSelectionStatus.DISABLED_CONSECUTIVE_FAILURES); } } } if (configuration != null && configuration.carrierId != TelephonyManager.UNKNOWN_CARRIER_ID) { if (level2FailureCode == WifiMetrics.ConnectionEvent.FAILURE_NONE) { mWifiMetrics.incrementNumOfCarrierWifiConnectionSuccess(); } else if (level2FailureCode == WifiMetrics.ConnectionEvent.FAILURE_AUTHENTICATION_FAILURE && level2FailureReason != WifiMetricsProto.ConnectionEvent.AUTH_FAILURE_NONE) { mWifiMetrics.incrementNumOfCarrierWifiConnectionAuthFailure(); } else { mWifiMetrics.incrementNumOfCarrierWifiConnectionNonAuthFailure(); } } boolean isAssociationRejection = level2FailureCode == WifiMetrics.ConnectionEvent.FAILURE_ASSOCIATION_REJECTION; boolean isAuthenticationFailure = level2FailureCode == WifiMetrics.ConnectionEvent.FAILURE_AUTHENTICATION_FAILURE && level2FailureReason != WifiMetricsProto.ConnectionEvent.AUTH_FAILURE_WRONG_PSWD; if ((isAssociationRejection || isAuthenticationFailure) && mWifiConfigManager.isInFlakyRandomizationSsidHotlist(mTargetNetworkId) && isPrimary()) { mConnectionFailureNotifier .showFailedToConnectDueToNoRandomizedMacSupportNotification(mTargetNetworkId); } mWifiMetrics.endConnectionEvent(mInterfaceName, level2FailureCode, connectivityFailureCode, level2FailureReason, mWifiInfo.getFrequency()); mWifiConnectivityManager.handleConnectionAttemptEnded( mClientModeManager, level2FailureCode, bssid, ssid); if (configuration != null) { mNetworkFactory.handleConnectionAttemptEnded(level2FailureCode, configuration, bssid); mWifiNetworkSuggestionsManager.handleConnectionAttemptEnded( level2FailureCode, configuration, getConnectedBssidInternal()); ScanResult candidate = configuration.getNetworkSelectionStatus().getCandidate(); if (candidate != null && !TextUtils.equals(candidate.BSSID, getConnectedBssidInternal())) { mWifiMetrics.incrementNumBssidDifferentSelectionBetweenFrameworkAndFirmware(); } } handleConnectionAttemptEndForDiagnostics(level2FailureCode); } /* If this connection attempt fails after 802.1x stage, clear intermediate cached data. */ void clearNetworkCachedDataIfNeeded(WifiConfiguration config, int reason) { if (config == null) return; switch(reason) { case ReasonCode.UNSPECIFIED: case ReasonCode.DEAUTH_LEAVING: logi("Keep PMK cache for network disconnection reason " + reason); break; default: mWifiNative.removeNetworkCachedData(config.networkId); break; } } /** * Returns the sufficient RSSI for the frequency that this network is last seen on. */ private int getSufficientRssi(int networkId, String bssid) { ScanDetailCache scanDetailCache = mWifiConfigManager.getScanDetailCacheForNetwork(networkId); if (scanDetailCache == null) { return WifiInfo.INVALID_RSSI; } ScanResult scanResult = scanDetailCache.getScanResult(bssid); if (scanResult == null) { return WifiInfo.INVALID_RSSI; } return mScoringParams.getSufficientRssi(scanResult.frequency); } private int convertToWifiBlocklistMonitorFailureReason( int level2FailureCode, int failureReason) { switch (level2FailureCode) { case WifiMetrics.ConnectionEvent.FAILURE_ASSOCIATION_TIMED_OUT: return WifiBlocklistMonitor.REASON_ASSOCIATION_TIMEOUT; case WifiMetrics.ConnectionEvent.FAILURE_ASSOCIATION_REJECTION: if (failureReason == WifiMetricsProto.ConnectionEvent .ASSOCIATION_REJECTION_AP_UNABLE_TO_HANDLE_NEW_STA) { return WifiBlocklistMonitor.REASON_AP_UNABLE_TO_HANDLE_NEW_STA; } return WifiBlocklistMonitor.REASON_ASSOCIATION_REJECTION; case WifiMetrics.ConnectionEvent.FAILURE_AUTHENTICATION_FAILURE: if (failureReason == WifiMetricsProto.ConnectionEvent.AUTH_FAILURE_WRONG_PSWD) { return WifiBlocklistMonitor.REASON_WRONG_PASSWORD; } else if (failureReason == WifiMetricsProto.ConnectionEvent .AUTH_FAILURE_EAP_FAILURE) { return WifiBlocklistMonitor.REASON_EAP_FAILURE; } return WifiBlocklistMonitor.REASON_AUTHENTICATION_FAILURE; case WifiMetrics.ConnectionEvent.FAILURE_DHCP: return WifiBlocklistMonitor.REASON_DHCP_FAILURE; case WifiMetrics.ConnectionEvent.FAILURE_NETWORK_DISCONNECTION: if (failureReason == WifiMetricsProto.ConnectionEvent.DISCONNECTION_NON_LOCAL) { return WifiBlocklistMonitor.REASON_NONLOCAL_DISCONNECT_CONNECTING; } return -1; default: return -1; } } private void handleIPv4Success(DhcpResultsParcelable dhcpResults) { if (mVerboseLoggingEnabled) { logd("handleIPv4Success <" + dhcpResults.toString() + ">"); logd("link address " + dhcpResults.baseConfiguration.getIpAddress()); } Inet4Address addr; synchronized (mDhcpResultsParcelableLock) { mDhcpResultsParcelable = dhcpResults; addr = (Inet4Address) dhcpResults.baseConfiguration.getIpAddress().getAddress(); } if (mIsAutoRoaming) { int previousAddress = mWifiInfo.getIpAddress(); int newAddress = Inet4AddressUtils.inet4AddressToIntHTL(addr); if (previousAddress != newAddress) { logd("handleIPv4Success, roaming and address changed" + mWifiInfo + " got: " + addr); } } mWifiInfo.setInetAddress(addr); final WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config != null) { updateWifiInfoWhenConnected(config); mWifiConfigManager.updateRandomizedMacExpireTime(config, dhcpResults.leaseDuration); mWifiBlocklistMonitor.handleDhcpProvisioningSuccess(mLastBssid, mWifiInfo.getSSID()); } // Set meteredHint if DHCP result says network is metered if (dhcpResults.vendorInfo != null && dhcpResults.vendorInfo.contains("ANDROID_METERED")) { mWifiInfo.setMeteredHint(true); mWifiMetrics.addMeteredStat(config, true); } else { mWifiMetrics.addMeteredStat(config, false); } updateCapabilities(); } private void handleSuccessfulIpConfiguration() { mLastSignalLevel = -1; // Force update of signal strength WifiConfiguration c = getConnectedWifiConfigurationInternal(); if (c != null) { // Reset IP failure tracking c.getNetworkSelectionStatus().clearDisableReasonCounter( WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); } } private void handleIPv4Failure() { // TODO: Move this to provisioning failure, not DHCP failure. // DHCPv4 failure is expected on an IPv6-only network. mWifiDiagnostics.triggerBugReportDataCapture(WifiDiagnostics.REPORT_REASON_DHCP_FAILURE); if (mVerboseLoggingEnabled) { int count = -1; WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config != null) { count = config.getNetworkSelectionStatus().getDisableReasonCounter( WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); } log("DHCP failure count=" + count); } reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_DHCP, WifiMetricsProto.ConnectionEvent.HLF_DHCP, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); synchronized (mDhcpResultsParcelableLock) { mDhcpResultsParcelable = new DhcpResultsParcelable(); } if (mVerboseLoggingEnabled) { logd("handleIPv4Failure"); } } private void handleIpConfigurationLost() { mWifiInfo.setInetAddress(null); mWifiInfo.setMeteredHint(false); mWifiConfigManager.updateNetworkSelectionStatus(mLastNetworkId, WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE); /* DHCP times out after about 30 seconds, we do a * disconnect thru supplicant, we will let autojoin retry connecting to the network */ mWifiNative.disconnect(mInterfaceName); } private void handleIpReachabilityLost() { mWifiScoreCard.noteIpReachabilityLost(mWifiInfo); mWifiInfo.setInetAddress(null); mWifiInfo.setMeteredHint(false); // Disconnect via supplicant, and let autojoin retry connecting to the network. mWifiNative.disconnect(mInterfaceName); } /* * Read a MAC address in /proc/arp/table, used by ClientModeImpl * so as to record MAC address of default gateway. **/ private String macAddressFromRoute(String ipAddress) { String macAddress = null; BufferedReader reader = null; try { reader = new BufferedReader(new FileReader("/proc/net/arp")); // Skip over the line bearing column titles String line = reader.readLine(); while ((line = reader.readLine()) != null) { String[] tokens = line.split("[ ]+"); if (tokens.length < 6) { continue; } // ARP column format is // Address HWType HWAddress Flags Mask IFace String ip = tokens[0]; String mac = tokens[3]; if (ipAddress.equals(ip)) { macAddress = mac; break; } } if (macAddress == null) { loge("Did not find remoteAddress {" + ipAddress + "} in /proc/net/arp"); } } catch (FileNotFoundException e) { loge("Could not open /proc/net/arp to lookup mac address"); } catch (IOException e) { loge("Could not read /proc/net/arp to lookup mac address"); } finally { try { if (reader != null) { reader.close(); } } catch (IOException e) { // Do nothing } } return macAddress; } /** * Determine if the specified auth failure is considered to be a permanent wrong password * failure. The criteria for such failure is when wrong password error is detected * and the network had never been connected before. * * For networks that have previously connected successfully, we consider wrong password * failures to be temporary, to be on the conservative side. Since this might be the * case where we are trying to connect to a wrong network (e.g. A network with same SSID * but different password). */ private boolean isPermanentWrongPasswordFailure(int networkId, int reasonCode) { if (reasonCode != WifiManager.ERROR_AUTH_FAILURE_WRONG_PSWD) { return false; } WifiConfiguration network = mWifiConfigManager.getConfiguredNetwork(networkId); if (network != null && network.getNetworkSelectionStatus().hasEverConnected()) { return false; } return true; } /** * Dynamically change the MAC address to use the locally randomized * MAC address generated for each network. * @param config WifiConfiguration with mRandomizedMacAddress to change into. If the address * is masked out or not set, it will generate a new random MAC address. */ private void configureRandomizedMacAddress(WifiConfiguration config) { if (config == null) { Log.e(getTag(), "No config to change MAC address to"); return; } String currentMacString = mWifiNative.getMacAddress(mInterfaceName); MacAddress currentMac = getMacAddressFromBssidString(currentMacString); MacAddress newMac = mWifiConfigManager.getRandomizedMacAndUpdateIfNeeded(config); if (!WifiConfiguration.isValidMacAddressForRandomization(newMac)) { Log.wtf(getTag(), "Config generated an invalid MAC address"); } else if (newMac.equals(currentMac)) { Log.d(getTag(), "No changes in MAC address"); } else { mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_MAC_CHANGE, config); boolean setMacSuccess = mWifiNative.setStaMacAddress(mInterfaceName, newMac); if (setMacSuccess) { mWifiNative.removeNetworkCachedDataIfNeeded(config.networkId, newMac); } Log.d(getTag(), "ConnectedMacRandomization SSID(" + config.getPrintableSsid() + "). setMacAddress(" + newMac.toString() + ") from " + currentMacString + " = " + setMacSuccess); } } /** * Sets the current MAC to the factory MAC address. */ private void setCurrentMacToFactoryMac(WifiConfiguration config) { MacAddress factoryMac = retrieveFactoryMacAddressAndStoreIfNecessary(); if (factoryMac == null) { Log.e(getTag(), "Fail to set factory MAC address. Factory MAC is null."); return; } String currentMacStr = mWifiNative.getMacAddress(mInterfaceName); if (!TextUtils.equals(currentMacStr, factoryMac.toString())) { if (mWifiNative.setStaMacAddress(mInterfaceName, factoryMac)) { mWifiNative.removeNetworkCachedDataIfNeeded(config.networkId, factoryMac); mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_MAC_CHANGE, config); } else { Log.e(getTag(), "Failed to set MAC address to " + "'" + factoryMac.toString() + "'"); } } } /** * Helper method to start other services and get state ready for client mode */ private void setupClientMode() { Log.d(getTag(), "setupClientMode() ifacename = " + mInterfaceName); setMulticastFilter(true); registerForWifiMonitorEvents(); if (isPrimary()) { mWifiLastResortWatchdog.clearAllFailureCounts(); } mWifiNative.setSupplicantLogLevel(mVerboseLoggingEnabled); // Initialize data structures mLastBssid = null; mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; mLastSubId = SubscriptionManager.INVALID_SUBSCRIPTION_ID; mLastSimBasedConnectionCarrierName = null; mLastSignalLevel = -1; if (mWifiGlobals.isConnectedMacRandomizationEnabled()) { if (!mWifiNative.setStaMacAddress( mInterfaceName, MacAddressUtils.createRandomUnicastAddress())) { Log.e(getTag(), "Failed to set random MAC address on bootup"); } } mWifiInfo.setMacAddress(mWifiNative.getMacAddress(mInterfaceName)); // TODO: b/79504296 This broadcast has been deprecated and should be removed sendSupplicantConnectionChangedBroadcast(true); mWifiNative.setExternalSim(mInterfaceName, true); mWifiDiagnostics.startPktFateMonitoring(mInterfaceName); mWifiDiagnostics.startLogging(mInterfaceName); mMboOceController.enable(); // Enable bluetooth coexistence scan mode when bluetooth connection is active. // When this mode is on, some of the low-level scan parameters used by the // driver are changed to reduce interference with bluetooth mWifiNative.setBluetoothCoexistenceScanMode( mInterfaceName, mWifiGlobals.isBluetoothConnected()); sendNetworkChangeBroadcast(DetailedState.DISCONNECTED); // Disable legacy multicast filtering, which on some chipsets defaults to enabled. // Legacy IPv6 multicast filtering blocks ICMPv6 router advertisements which breaks IPv6 // provisioning. Legacy IPv4 multicast filtering may be re-enabled later via // IpClient.Callback.setFallbackMulticastFilter() mWifiNative.stopFilteringMulticastV4Packets(mInterfaceName); mWifiNative.stopFilteringMulticastV6Packets(mInterfaceName); // Set the right suspend mode settings mWifiNative.setSuspendOptimizations(mInterfaceName, mSuspendOptNeedsDisabled == 0 && mContext.getResources().getBoolean( R.bool.config_wifiSuspendOptimizationsEnabled)); setPowerSave(true); // Disable wpa_supplicant from auto reconnecting. mWifiNative.enableStaAutoReconnect(mInterfaceName, false); // STA has higher priority over P2P mWifiNative.setConcurrencyPriority(true); // Retrieve and store the factory MAC address (on first bootup). retrieveFactoryMacAddressAndStoreIfNecessary(); } /** * Helper method to stop external services and clean up state from client mode. */ private void stopClientMode() { handleNetworkDisconnect(false, WifiStatsLog.WIFI_DISCONNECT_REPORTED__FAILURE_CODE__WIFI_DISABLED); // exiting supplicant started state is now only applicable to client mode mWifiDiagnostics.stopLogging(mInterfaceName); mMboOceController.disable(); if (mIpClient != null && mIpClient.shutdown()) { // Block to make sure IpClient has really shut down, lest cleanup // race with, say, bringup code over in tethering. mIpClientCallbacks.awaitShutdown(); } deregisterForWifiMonitorEvents(); // uses mInterfaceName, must call before nulling out // TODO: b/79504296 This broadcast has been deprecated and should be removed sendSupplicantConnectionChangedBroadcast(false); } /** * Helper method called when a L3 connection is successfully established to a network. */ void registerConnected() { if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { WifiConfiguration config = getConnectedWifiConfigurationInternal(); boolean shouldSetUserConnectChoice = config != null && isRecentlySelectedByTheUser(config) && config.getNetworkSelectionStatus().hasEverConnected() && mWifiPermissionsUtil.checkNetworkSettingsPermission(config.lastConnectUid); mWifiConfigManager.updateNetworkAfterConnect(mLastNetworkId, shouldSetUserConnectChoice, mWifiInfo.getRssi()); // Notify PasspointManager of Passpoint network connected event. WifiConfiguration currentNetwork = getConnectedWifiConfigurationInternal(); if (currentNetwork != null && currentNetwork.isPasspoint()) { mPasspointManager.onPasspointNetworkConnected( currentNetwork.getProfileKey()); } } } void registerDisconnected() { if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { mWifiConfigManager.updateNetworkAfterDisconnect(mLastNetworkId); } } /** * Returns WifiConfiguration object corresponding to the currently connected network, null if * not connected. */ @Nullable private WifiConfiguration getConnectedWifiConfigurationInternal() { if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { return null; } return mWifiConfigManager.getConfiguredNetwork(mLastNetworkId); } /** * Returns WifiConfiguration object corresponding to the currently connecting network, null if * not connecting. */ @Nullable private WifiConfiguration getConnectingWifiConfigurationInternal() { if (mTargetNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { return null; } return mWifiConfigManager.getConfiguredNetwork(mTargetNetworkId); } @Nullable private String getConnectedBssidInternal() { return mLastBssid; } @Nullable private String getConnectingBssidInternal() { return mTargetBssid; } /** * Returns WifiConfiguration object corresponding to the currently connected network, null if * not connected. */ @Override @Nullable public WifiConfiguration getConnectedWifiConfiguration() { if (!isConnected()) return null; return getConnectedWifiConfigurationInternal(); } /** * Returns WifiConfiguration object corresponding to the currently connecting network, null if * not connecting. */ @Override @Nullable public WifiConfiguration getConnectingWifiConfiguration() { if (!isConnecting() && !isRoaming()) return null; return getConnectingWifiConfigurationInternal(); } @Override @Nullable public String getConnectedBssid() { if (!isConnected()) return null; return getConnectedBssidInternal(); } @Override @Nullable public String getConnectingBssid() { if (!isConnecting() && !isRoaming()) return null; return getConnectingBssidInternal(); } ScanResult getCurrentScanResult() { WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config == null) { return null; } String bssid = mWifiInfo.getBSSID(); if (bssid == null) { bssid = mTargetBssid; } ScanDetailCache scanDetailCache = mWifiConfigManager.getScanDetailCacheForNetwork(config.networkId); if (scanDetailCache == null) { return null; } return scanDetailCache.getScanResult(bssid); } private MacAddress getMacAddressFromBssidString(@Nullable String bssidStr) { try { return (bssidStr != null) ? MacAddress.fromString(bssidStr) : null; } catch (IllegalArgumentException e) { Log.e(getTag(), "Invalid BSSID format: " + bssidStr); return null; } } private MacAddress getCurrentBssidInternalMacAddress() { return getMacAddressFromBssidString(mLastBssid); } private void connectToNetwork(WifiConfiguration config) { if ((config != null) && mWifiNative.connectToNetwork(mInterfaceName, config)) { mWifiLastResortWatchdog.noteStartConnectTime(config.networkId); mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_CMD_START_CONNECT, config); mIsAutoRoaming = false; transitionTo(mL2ConnectingState); } else { loge("CMD_START_CONNECT Failed to start connection to network " + config); mTargetWifiConfiguration = null; stopIpClient(); reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_CONNECT_NETWORK_FAILED, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); } } /******************************************************** * HSM states *******************************************************/ class ConnectableState extends State { private boolean mIsScreenStateChangeReceiverRegistered = false; BroadcastReceiver mScreenStateChangeReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (action.equals(Intent.ACTION_SCREEN_ON)) { sendMessage(CMD_SCREEN_STATE_CHANGED, 1); } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { sendMessage(CMD_SCREEN_STATE_CHANGED, 0); } } }; @Override public void enter() { Log.d(getTag(), "entering ConnectableState: ifaceName = " + mInterfaceName); setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true); mWifiStateTracker.updateState(mInterfaceName, WifiStateTracker.INVALID); mIpClientCallbacks = new IpClientCallbacksImpl(); Log.d(getTag(), "Start makeIpClient ifaceName = " + mInterfaceName); mFacade.makeIpClient(mContext, mInterfaceName, mIpClientCallbacks); mIpClientCallbacks.awaitCreation(); } private void continueEnterSetup(IpClientManager ipClientManager) { mIpClient = ipClientManager; setupClientMode(); IntentFilter filter = new IntentFilter(); filter.addAction(Intent.ACTION_SCREEN_ON); filter.addAction(Intent.ACTION_SCREEN_OFF); if (!mIsScreenStateChangeReceiverRegistered) { mContext.registerReceiver(mScreenStateChangeReceiver, filter); mIsScreenStateChangeReceiverRegistered = true; } // Learn the initial state of whether the screen is on. // We update this field when we receive broadcasts from the system. handleScreenStateChanged(mContext.getSystemService(PowerManager.class).isInteractive()); if (!mWifiNative.removeAllNetworks(mInterfaceName)) { loge("Failed to remove networks on entering connect mode"); } mWifiInfo.reset(); mWifiInfo.setSupplicantState(SupplicantState.DISCONNECTED); sendNetworkChangeBroadcast(DetailedState.DISCONNECTED); // Inform metrics that Wifi is Enabled (but not yet connected) mWifiMetrics.setWifiState(mInterfaceName, WifiMetricsProto.WifiLog.WIFI_DISCONNECTED); mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_WIFI_ENABLED); mWifiScoreCard.noteSupplicantStateChanged(mWifiInfo); } @Override public void exit() { // Inform metrics that Wifi is being disabled (Toggled, airplane enabled, etc) mWifiMetrics.setWifiState(mInterfaceName, WifiMetricsProto.WifiLog.WIFI_DISABLED); mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_WIFI_DISABLED); if (!mWifiNative.removeAllNetworks(mInterfaceName)) { loge("Failed to remove networks on exiting connect mode"); } if (mIsScreenStateChangeReceiverRegistered) { mContext.unregisterReceiver(mScreenStateChangeReceiver); mIsScreenStateChangeReceiverRegistered = false; } stopClientMode(); mWifiScoreCard.doWrites(); } @Override public boolean processMessage(Message message) { switch (message.what) { case CMD_CONNECTABLE_STATE_SETUP: if (mIpClient != null) { loge("Setup connectable state again when IpClient is ready?"); } else { IpClientManager ipClientManager = (IpClientManager) message.obj; continueEnterSetup(ipClientManager); } break; case CMD_ENABLE_RSSI_POLL: { mEnableRssiPolling = (message.arg1 == 1); break; } case CMD_SCREEN_STATE_CHANGED: { handleScreenStateChanged(message.arg1 != 0); break; } case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: { if (mIpClient == null) { logd("IpClient is not ready, " + "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST dropped"); break; } if (mWifiP2pConnection.shouldTemporarilyDisconnectWifi()) { mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT, StaEvent.DISCONNECT_P2P_DISCONNECT_WIFI_REQUEST); mWifiNative.disconnect(mInterfaceName); } else { mWifiNative.reconnect(mInterfaceName); } break; } case CMD_RECONNECT: { WorkSource workSource = (WorkSource) message.obj; mWifiConnectivityManager.forceConnectivityScan(workSource); break; } case CMD_REASSOCIATE: { if (mIpClient != null) { logd("IpClient is not ready, REASSOCIATE dropped"); mWifiNative.reassociate(mInterfaceName); } break; } case CMD_START_CONNECT: { if (mIpClient == null) { logd("IpClient is not ready, START_CONNECT dropped"); break; } /* connect command coming from auto-join */ int netId = message.arg1; int uid = message.arg2; String bssid = (String) message.obj; mSentHLPs = false; // Stop lingering (if it was lingering before) if we start a new connection. // This means that the ClientModeManager was reused for another purpose, so it // should no longer be in lingering mode. mClientModeManager.setShouldReduceNetworkScore(false); if (!hasConnectionRequests()) { if (mNetworkAgent == null) { loge("CMD_START_CONNECT but no requests and not connected," + " bailing"); break; } else if (!mWifiPermissionsUtil.checkNetworkSettingsPermission(uid)) { loge("CMD_START_CONNECT but no requests and connected, but app " + "does not have sufficient permissions, bailing"); break; } } WifiConfiguration config = mWifiConfigManager.getConfiguredNetworkWithoutMasking(netId); logd("CMD_START_CONNECT " + " my state " + getCurrentState().getName() + " nid=" + netId + " roam=" + mIsAutoRoaming); if (config == null) { loge("CMD_START_CONNECT and no config, bail out..."); break; } mTargetNetworkId = netId; // Update scorecard while there is still state from existing connection mLastScanRssi = mWifiConfigManager.findScanRssi(netId, mWifiHealthMonitor.getScanRssiValidTimeMs()); mWifiScoreCard.noteConnectionAttempt(mWifiInfo, mLastScanRssi, config.SSID); mWifiBlocklistMonitor.setAllowlistSsids(config.SSID, Collections.emptyList()); mWifiBlocklistMonitor.updateFirmwareRoamingConfiguration(Set.of(config.SSID)); updateWifiConfigOnStartConnection(config, bssid); reportConnectionAttemptStart(config, mTargetBssid, WifiMetricsProto.ConnectionEvent.ROAM_UNRELATED); String currentMacAddress = mWifiNative.getMacAddress(mInterfaceName); mWifiInfo.setMacAddress(currentMacAddress); Log.i(getTag(), "Connecting with " + currentMacAddress + " as the mac address"); mTargetWifiConfiguration = config; mNetworkNotFoundEventCount = 0; /* Check for FILS configuration again after updating the config */ if (config.isFilsSha256Enabled() || config.isFilsSha384Enabled()) { boolean isIpClientStarted = startIpClient(config, true); if (isIpClientStarted) { mIpClientWithPreConnection = true; break; } } connectToNetwork(config); break; } case CMD_START_FILS_CONNECTION: { if (mIpClient == null) { logd("IpClient is not ready, START_FILS_CONNECTION dropped"); break; } mWifiMetrics.incrementConnectRequestWithFilsAkmCount(); List packets; packets = (List) message.obj; if (mVerboseLoggingEnabled) { Log.d(getTag(), "Send HLP IEs to supplicant"); } addLayer2PacketsToHlpReq(packets); WifiConfiguration config = mTargetWifiConfiguration; connectToNetwork(config); break; } case CMD_CONNECT_NETWORK: { ConnectNetworkMessage cnm = (ConnectNetworkMessage) message.obj; if (mIpClient == null) { logd("IpClient is not ready, CONNECT_NETWORK dropped"); cnm.listener.sendFailure(WifiManager.ERROR); break; } NetworkUpdateResult result = cnm.result; int netId = result.getNetworkId(); connectToUserSelectNetwork( netId, message.sendingUid, result.hasCredentialChanged()); mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_CONNECT_NETWORK, mWifiConfigManager.getConfiguredNetwork(netId)); cnm.listener.sendSuccess(); break; } case CMD_SAVE_NETWORK: { ConnectNetworkMessage cnm = (ConnectNetworkMessage) message.obj; if (mIpClient == null) { logd("IpClient is not ready, SAVE_NETWORK dropped"); cnm.listener.sendFailure(WifiManager.ERROR); break; } NetworkUpdateResult result = cnm.result; int netId = result.getNetworkId(); if (mWifiInfo.getNetworkId() == netId) { if (result.hasCredentialChanged()) { // The network credentials changed and we're connected to this network, // start a new connection with the updated credentials. logi("CMD_SAVE_NETWORK credential changed for nid=" + netId + ". Reconnecting."); startConnectToNetwork(netId, message.sendingUid, SUPPLICANT_BSSID_ANY); } else { if (result.hasProxyChanged()) { if (mIpClient != null) { log("Reconfiguring proxy on connection"); WifiConfiguration currentConfig = getConnectedWifiConfigurationInternal(); if (currentConfig != null) { mIpClient.setHttpProxy(currentConfig.getHttpProxy()); } else { Log.w(getTag(), "CMD_SAVE_NETWORK proxy change - but no current " + "Wi-Fi config"); } } } if (result.hasIpChanged()) { // The current connection configuration was changed // We switched from DHCP to static or from static to DHCP, or the // static IP address has changed. log("Reconfiguring IP on connection"); WifiConfiguration currentConfig = getConnectedWifiConfigurationInternal(); if (currentConfig != null) { transitionTo(mL3ProvisioningState); } else { Log.w(getTag(), "CMD_SAVE_NETWORK Ip change - but no current " + "Wi-Fi config"); } } } } else if (mWifiInfo.getNetworkId() == WifiConfiguration.INVALID_NETWORK_ID && result.hasCredentialChanged()) { logi("CMD_SAVE_NETWORK credential changed for nid=" + netId + " while disconnected. Connecting."); startConnectToNetwork(netId, message.sendingUid, SUPPLICANT_BSSID_ANY); } else if (result.hasCredentialChanged()) { WifiConfiguration currentConfig = getConnectedWifiConfigurationInternal(); WifiConfiguration updatedConfig = mWifiConfigManager.getConfiguredNetwork(netId); if (currentConfig != null && currentConfig.isLinked(updatedConfig)) { logi("current network linked config saved, update linked networks"); updateLinkedNetworks(currentConfig); } } cnm.listener.sendSuccess(); break; } case CMD_BLUETOOTH_CONNECTION_STATE_CHANGE: { mWifiNative.setBluetoothCoexistenceScanMode( mInterfaceName, mWifiGlobals.isBluetoothConnected()); break; } case CMD_SET_SUSPEND_OPT_ENABLED: { if (message.arg1 == 1) { setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); if (message.arg2 == 1) { mSuspendWakeLock.release(); } } else { setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, false); } break; } case WifiMonitor.ANQP_DONE_EVENT: { mPasspointManager.notifyANQPDone((AnqpEvent) message.obj); break; } case CMD_STOP_IP_PACKET_OFFLOAD: { int slot = message.arg1; int ret = stopWifiIPPacketOffload(slot); if (mNetworkAgent != null) { mNetworkAgent.sendSocketKeepaliveEvent(slot, ret); } break; } case WifiMonitor.RX_HS20_ANQP_ICON_EVENT: { mPasspointManager.notifyIconDone((IconEvent) message.obj); break; } case WifiMonitor.HS20_DEAUTH_IMMINENT_EVENT: mPasspointManager.handleDeauthImminentEvent((WnmData) message.obj, getConnectedWifiConfigurationInternal()); break; case WifiMonitor.HS20_TERMS_AND_CONDITIONS_ACCEPTANCE_REQUIRED_EVENT: mWifiMetrics .incrementTotalNumberOfPasspointConnectionsWithTermsAndConditionsUrl(); mTermsAndConditionsUrl = mPasspointManager .handleTermsAndConditionsEvent((WnmData) message.obj, getConnectedWifiConfigurationInternal()); if (mTermsAndConditionsUrl == null) { loge("Disconnecting from Passpoint network due to an issue with the " + "Terms and Conditions URL"); sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_PASSPOINT_TAC); } break; case WifiMonitor.HS20_REMEDIATION_EVENT: mPasspointManager.receivedWnmFrame((WnmData) message.obj); break; case WifiMonitor.MBO_OCE_BSS_TM_HANDLING_DONE: { handleBssTransitionRequest((BtmFrameData) message.obj); break; } case CMD_CONFIG_ND_OFFLOAD: { final boolean enabled = (message.arg1 > 0); mWifiNative.configureNeighborDiscoveryOffload(mInterfaceName, enabled); break; } // Link configuration (IP address, DNS, ...) changes notified via netlink case CMD_UPDATE_LINKPROPERTIES: { updateLinkProperties((LinkProperties) message.obj); break; } case CMD_START_IP_PACKET_OFFLOAD: case CMD_ADD_KEEPALIVE_PACKET_FILTER_TO_APF: case CMD_REMOVE_KEEPALIVE_PACKET_FILTER_FROM_APF: { if (mNetworkAgent != null) { mNetworkAgent.sendSocketKeepaliveEvent(message.arg1, SocketKeepalive.ERROR_INVALID_NETWORK); } break; } case CMD_INSTALL_PACKET_FILTER: { mCachedPacketFilter = (byte[]) message.obj; if (mContext.getResources().getBoolean( R.bool.config_wifiEnableApfOnNonPrimarySta) || isPrimary()) { mWifiNative.installPacketFilter(mInterfaceName, mCachedPacketFilter); } else { Log.v(TAG, "Not applying packet filter on non primary CMM"); } break; } case CMD_READ_PACKET_FILTER: { final byte[] packetFilter; if (mContext.getResources().getBoolean( R.bool.config_wifiEnableApfOnNonPrimarySta) || isPrimary()) { packetFilter = mWifiNative.readPacketFilter(mInterfaceName); } else { Log.v(TAG, "Retrieving cached packet filter on non primary CMM"); packetFilter = mCachedPacketFilter; } if (mIpClient != null) { mIpClient.readPacketFilterComplete(packetFilter); } break; } case CMD_SET_FALLBACK_PACKET_FILTERING: { if ((boolean) message.obj) { mWifiNative.startFilteringMulticastV4Packets(mInterfaceName); } else { mWifiNative.stopFilteringMulticastV4Packets(mInterfaceName); } break; } case CMD_DIAGS_CONNECT_TIMEOUT: { mWifiDiagnostics.reportConnectionEvent( WifiDiagnostics.CONNECTION_EVENT_TIMEOUT, mClientModeManager); break; } case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: case CMD_RESET_SIM_NETWORKS: case WifiMonitor.NETWORK_CONNECTION_EVENT: case WifiMonitor.NETWORK_DISCONNECTION_EVENT: case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: case WifiMonitor.ASSOCIATION_REJECTION_EVENT: case CMD_RSSI_POLL: case CMD_ONESHOT_RSSI_POLL: case CMD_PRE_DHCP_ACTION: case CMD_PRE_DHCP_ACTION_COMPLETE: case CMD_POST_DHCP_ACTION: case WifiMonitor.SUP_REQUEST_IDENTITY: case WifiMonitor.SUP_REQUEST_SIM_AUTH: case WifiMonitor.TARGET_BSSID_EVENT: case WifiMonitor.ASSOCIATED_BSSID_EVENT: case WifiMonitor.TRANSITION_DISABLE_INDICATION: case CMD_UNWANTED_NETWORK: case CMD_CONNECTING_WATCHDOG_TIMER: case WifiMonitor.NETWORK_NOT_FOUND_EVENT: case CMD_ROAM_WATCHDOG_TIMER: { // no-op: all messages must be handled in the base state in case it was missed // in one of the child states. break; } case CMD_START_ROAM: case CMD_START_RSSI_MONITORING_OFFLOAD: case CMD_STOP_RSSI_MONITORING_OFFLOAD: case CMD_IP_CONFIGURATION_SUCCESSFUL: case CMD_IP_CONFIGURATION_LOST: case CMD_IP_REACHABILITY_LOST: { mMessageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; break; } case 0: { // We want to notice any empty messages (with what == 0) that might crop up. // For example, we may have recycled a message sent to multiple handlers. Log.wtf(getTag(), "Error! empty message encountered"); break; } default: { loge("Error! unhandled message" + message); break; } } logStateAndMessage(message, this); return HANDLED; } } private boolean handleL3MessagesWhenNotConnected(Message message) { boolean handleStatus = HANDLED; if (!mIpClientWithPreConnection) { return NOT_HANDLED; } switch (message.what) { case CMD_PRE_DHCP_ACTION: handlePreDhcpSetup(); break; case CMD_PRE_DHCP_ACTION_COMPLETE: if (mIpClient != null) { mIpClient.completedPreDhcpAction(); } break; case CMD_IPV4_PROVISIONING_FAILURE: stopDhcpSetup(); deferMessage(message); break; case CMD_POST_DHCP_ACTION: case CMD_IPV4_PROVISIONING_SUCCESS: case CMD_IP_CONFIGURATION_SUCCESSFUL: deferMessage(message); break; default: return NOT_HANDLED; } return handleStatus; } private WifiNetworkAgentSpecifier createNetworkAgentSpecifier( @NonNull WifiConfiguration currentWifiConfiguration, @Nullable String currentBssid, boolean matchLocationSensitiveInformation) { // Defensive copy to avoid mutating the passed argument final WifiConfiguration conf = new WifiConfiguration(currentWifiConfiguration); conf.BSSID = currentBssid; WifiNetworkAgentSpecifier wns = new WifiNetworkAgentSpecifier(conf, WifiNetworkSpecifier.getBand(mWifiInfo.getFrequency()), matchLocationSensitiveInformation); return wns; } private NetworkCapabilities getCapabilities( WifiConfiguration currentWifiConfiguration, String currentBssid) { final NetworkCapabilities.Builder builder = new NetworkCapabilities.Builder(mNetworkCapabilitiesFilter); // MatchAllNetworkSpecifier set in the mNetworkCapabilitiesFilter should never be set in the // agent's specifier. builder.setNetworkSpecifier(null); if (currentWifiConfiguration == null) { return builder.build(); } if (mWifiInfo.isTrusted()) { builder.addCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED); } else { builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED); } if (SdkLevel.isAtLeastS()) { if (mWifiInfo.isOemPaid()) { builder.addCapability(NetworkCapabilities.NET_CAPABILITY_OEM_PAID); builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); } else { builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_OEM_PAID); } if (mWifiInfo.isOemPrivate()) { builder.addCapability(NetworkCapabilities.NET_CAPABILITY_OEM_PRIVATE); builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); } else { builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_OEM_PRIVATE); } } builder.setOwnerUid(currentWifiConfiguration.creatorUid); builder.setAdministratorUids(new int[] {currentWifiConfiguration.creatorUid}); if (!WifiConfiguration.isMetered(currentWifiConfiguration, mWifiInfo)) { builder.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); } else { builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED); } if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI) { builder.setSignalStrength(mWifiInfo.getRssi()); } else { builder.setSignalStrength(NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED); } if (currentWifiConfiguration.osu) { builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); } if (!mWifiInfo.getSSID().equals(WifiManager.UNKNOWN_SSID)) { builder.setSsid(mWifiInfo.getSSID()); } // Only send out WifiInfo in >= Android S devices. if (SdkLevel.isAtLeastS()) { builder.setTransportInfo(new WifiInfo(mWifiInfo)); if (mWifiInfo.getSubscriptionId() != SubscriptionManager.INVALID_SUBSCRIPTION_ID && mWifiInfo.isCarrierMerged()) { builder.setSubscriptionIds(Collections.singleton(mWifiInfo.getSubscriptionId())); } } Pair specificRequestUidAndPackageName = mNetworkFactory.getSpecificNetworkRequestUidAndPackageName( currentWifiConfiguration, currentBssid); // There is an active specific request. if (specificRequestUidAndPackageName.first != Process.INVALID_UID) { // Remove internet capability. builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); // Fill up the uid/packageName for this connection. builder.setRequestorUid(specificRequestUidAndPackageName.first); builder.setRequestorPackageName(specificRequestUidAndPackageName.second); // Fill up the network agent specifier for this connection, allowing NetworkCallbacks // to match local-only specifiers in requests. TODO(b/187921303): a third-party app can // observe this location-sensitive information by registering a NetworkCallback. builder.setNetworkSpecifier(createNetworkAgentSpecifier(currentWifiConfiguration, getConnectedBssidInternal(), true /* matchLocalOnlySpecifiers */)); } else { // Fill up the network agent specifier for this connection, without allowing // NetworkCallbacks to match local-only specifiers in requests. builder.setNetworkSpecifier(createNetworkAgentSpecifier(currentWifiConfiguration, getConnectedBssidInternal(), false /* matchLocalOnlySpecifiers */)); } updateLinkBandwidth(builder); final NetworkCapabilities networkCapabilities = builder.build(); if (mVcnManager == null || !currentWifiConfiguration.carrierMerged) { return networkCapabilities; } final VcnNetworkPolicyResult vcnNetworkPolicy = mVcnManager.applyVcnNetworkPolicy(networkCapabilities, mLinkProperties); if (vcnNetworkPolicy.isTeardownRequested()) { sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_VCN_REQUEST); } final NetworkCapabilities vcnCapability = vcnNetworkPolicy.getNetworkCapabilities(); if (!vcnCapability.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED)) { if (mVerboseLoggingEnabled) { logd("NET_CAPABILITY_NOT_VCN_MANAGED is removed"); } builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED); } if (!vcnCapability.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)) { if (mVerboseLoggingEnabled) { logd("NET_CAPABILITY_NOT_RESTRICTED is removed"); } builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); } return builder.build(); } private void updateLinkBandwidth(NetworkCapabilities.Builder networkCapabilitiesBuilder) { int txTputKbps = 0; int rxTputKbps = 0; int currRssi = mWifiInfo.getRssi(); if (currRssi != WifiInfo.INVALID_RSSI) { WifiScoreCard.PerNetwork network = mWifiScoreCard.lookupNetwork(mWifiInfo.getSSID()); txTputKbps = network.getTxLinkBandwidthKbps(); rxTputKbps = network.getRxLinkBandwidthKbps(); } else { // Fall back to max link speed. This should rarely happen if ever int maxTxLinkSpeedMbps = mWifiInfo.getMaxSupportedTxLinkSpeedMbps(); int maxRxLinkSpeedMbps = mWifiInfo.getMaxSupportedRxLinkSpeedMbps(); txTputKbps = maxTxLinkSpeedMbps * 1000; rxTputKbps = maxRxLinkSpeedMbps * 1000; } if (mVerboseLoggingEnabled) { logd("reported txKbps " + txTputKbps + " rxKbps " + rxTputKbps); } if (txTputKbps > 0) { networkCapabilitiesBuilder.setLinkUpstreamBandwidthKbps(txTputKbps); } if (rxTputKbps > 0) { networkCapabilitiesBuilder.setLinkDownstreamBandwidthKbps(rxTputKbps); } } /** * Method to update network capabilities from the current WifiConfiguration. */ public void updateCapabilities() { updateCapabilities(getConnectedWifiConfigurationInternal()); } private void updateCapabilities(WifiConfiguration currentWifiConfiguration) { updateCapabilities(getCapabilities(currentWifiConfiguration, getConnectedBssidInternal())); } private void updateCapabilities(NetworkCapabilities networkCapabilities) { if (mNetworkAgent == null) { return; } mNetworkAgent.sendNetworkCapabilitiesAndCache(networkCapabilities); } private void handleEapAuthFailure(int networkId, int errorCode) { WifiConfiguration targetedNetwork = mWifiConfigManager.getConfiguredNetwork(mTargetNetworkId); if (targetedNetwork != null) { switch (targetedNetwork.enterpriseConfig.getEapMethod()) { case WifiEnterpriseConfig.Eap.SIM: case WifiEnterpriseConfig.Eap.AKA: case WifiEnterpriseConfig.Eap.AKA_PRIME: if (errorCode == WifiNative.EAP_SIM_VENDOR_SPECIFIC_CERT_EXPIRED) { mWifiCarrierInfoManager.resetCarrierKeysForImsiEncryption(targetedNetwork); } break; default: // Do Nothing } } } /** * All callbacks are triggered on the main Wifi thread. * See {@link WifiNetworkAgent#WifiNetworkAgent}'s looper argument in * {@link WifiInjector#makeWifiNetworkAgent}. */ private class WifiNetworkAgentCallback implements WifiNetworkAgent.Callback { private int mLastNetworkStatus = -1; // To detect when the status really changes private boolean isThisCallbackActive() { return mNetworkAgent != null && mNetworkAgent.getCallback() == this; } @Override public void onNetworkUnwanted() { // Ignore if we're not the current networkAgent. if (!isThisCallbackActive()) return; if (mVerboseLoggingEnabled) { logd("WifiNetworkAgent -> Wifi unwanted score " + mWifiInfo.getScore()); } unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT); } @Override public void onValidationStatus(int status, @Nullable Uri redirectUri) { if (!isThisCallbackActive()) return; if (status == mLastNetworkStatus) return; mLastNetworkStatus = status; if (status == NetworkAgent.VALIDATION_STATUS_NOT_VALID) { if (mVerboseLoggingEnabled) { logd("WifiNetworkAgent -> Wifi networkStatus invalid, score=" + mWifiInfo.getScore()); } unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED); } else if (status == NetworkAgent.VALIDATION_STATUS_VALID) { if (mVerboseLoggingEnabled) { logd("WifiNetworkAgent -> Wifi networkStatus valid, score= " + mWifiInfo.getScore()); } mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_NETWORK_AGENT_VALID_NETWORK); doNetworkStatus(status); } boolean captivePortalDetected = redirectUri != null && redirectUri.toString() != null && redirectUri.toString().length() > 0; if (captivePortalDetected) { Log.i(getTag(), "Captive Portal detected, status=" + status + ", redirectUri=" + redirectUri); mWifiConfigManager.noteCaptivePortalDetected(mWifiInfo.getNetworkId()); mCmiMonitor.onCaptivePortalDetected(mClientModeManager); } } @Override public void onSaveAcceptUnvalidated(boolean accept) { if (!isThisCallbackActive()) return; ClientModeImpl.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0); } @Override public void onStartSocketKeepalive(int slot, @NonNull Duration interval, @NonNull KeepalivePacketData packet) { if (!isThisCallbackActive()) return; ClientModeImpl.this.sendMessage( CMD_START_IP_PACKET_OFFLOAD, slot, (int) interval.getSeconds(), packet); } @Override public void onStopSocketKeepalive(int slot) { if (!isThisCallbackActive()) return; ClientModeImpl.this.sendMessage(CMD_STOP_IP_PACKET_OFFLOAD, slot); } @Override public void onAddKeepalivePacketFilter(int slot, @NonNull KeepalivePacketData packet) { if (!isThisCallbackActive()) return; ClientModeImpl.this.sendMessage( CMD_ADD_KEEPALIVE_PACKET_FILTER_TO_APF, slot, 0, packet); } @Override public void onRemoveKeepalivePacketFilter(int slot) { if (!isThisCallbackActive()) return; ClientModeImpl.this.sendMessage(CMD_REMOVE_KEEPALIVE_PACKET_FILTER_FROM_APF, slot); } @Override public void onSignalStrengthThresholdsUpdated(@NonNull int[] thresholds) { if (!isThisCallbackActive()) return; // 0. If there are no thresholds, or if the thresholds are invalid, // stop RSSI monitoring. // 1. Tell the hardware to start RSSI monitoring here, possibly adding MIN_VALUE and // MAX_VALUE at the start/end of the thresholds array if necessary. // 2. Ensure that when the hardware event fires, we fetch the RSSI from the hardware // event, call mWifiInfo.setRssi() with it, and call updateCapabilities(), and then // re-arm the hardware event. This needs to be done on the state machine thread to // avoid race conditions. The RSSI used to re-arm the event (and perhaps also the one // sent in the NetworkCapabilities) must be the one received from the hardware event // received, or we might skip callbacks. // 3. Ensure that when we disconnect, RSSI monitoring is stopped. logd("Received signal strength thresholds: " + Arrays.toString(thresholds)); if (thresholds.length == 0) { ClientModeImpl.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, mWifiInfo.getRssi()); return; } int [] rssiVals = Arrays.copyOf(thresholds, thresholds.length + 2); rssiVals[rssiVals.length - 2] = Byte.MIN_VALUE; rssiVals[rssiVals.length - 1] = Byte.MAX_VALUE; Arrays.sort(rssiVals); byte[] rssiRange = new byte[rssiVals.length]; for (int i = 0; i < rssiVals.length; i++) { int val = rssiVals[i]; if (val <= Byte.MAX_VALUE && val >= Byte.MIN_VALUE) { rssiRange[i] = (byte) val; } else { Log.e(getTag(), "Illegal value " + val + " for RSSI thresholds: " + Arrays.toString(rssiVals)); ClientModeImpl.this.sendMessage(CMD_STOP_RSSI_MONITORING_OFFLOAD, mWifiInfo.getRssi()); return; } } // TODO: Do we quash rssi values in this sorted array which are very close? mRssiRanges = rssiRange; ClientModeImpl.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD, mWifiInfo.getRssi()); } @Override public void onAutomaticReconnectDisabled() { if (!isThisCallbackActive()) return; unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN); } } private void unwantedNetwork(int reason) { sendMessage(CMD_UNWANTED_NETWORK, reason); } private void doNetworkStatus(int status) { sendMessage(CMD_NETWORK_STATUS, status); } class ConnectingOrConnectedState extends State { @Override public void enter() { if (mVerboseLoggingEnabled) Log.v(getTag(), "Entering ConnectingOrConnectedState"); mCmiMonitor.onConnectionStart(mClientModeManager); } @Override public void exit() { if (mVerboseLoggingEnabled) Log.v(getTag(), "Exiting ConnectingOrConnectedState"); mCmiMonitor.onConnectionEnd(mClientModeManager); // Not connected/connecting to any network: // 1. Disable the network in supplicant to prevent it from auto-connecting. We don't // remove the network to avoid losing any cached info in supplicant (reauth, etc) in // case we reconnect back to the same network. // 2. Set a random MAC address to ensure that we're not leaking the MAC address. mWifiNative.disableNetwork(mInterfaceName); if (mWifiGlobals.isConnectedMacRandomizationEnabled()) { if (!mWifiNative.setStaMacAddress( mInterfaceName, MacAddressUtils.createRandomUnicastAddress())) { Log.e(getTag(), "Failed to set random MAC address on disconnect"); } } mWifiInfo.reset(); mWifiInfo.setSupplicantState(SupplicantState.DISCONNECTED); mWifiScoreCard.noteSupplicantStateChanged(mWifiInfo); // For secondary client roles, they should stop themselves upon disconnection. // - Primary role shouldn't because it is persistent, and should try connecting to other // networks upon disconnection. // - ROLE_CLIENT_LOCAL_ONLY shouldn't because it has auto-retry logic if the connection // fails. WifiNetworkFactory will explicitly remove the CMM when the request is // complete. // TODO(b/160346062): Maybe clean this up by having ClientModeManager register a // onExitConnectingOrConnectedState() callback with ClientModeImpl and implementing // this logic in ClientModeManager. ClientModeImpl should be role-agnostic. ClientRole role = mClientModeManager.getRole(); if (role == ROLE_CLIENT_SECONDARY_LONG_LIVED || role == ROLE_CLIENT_SECONDARY_TRANSIENT) { if (mVerboseLoggingEnabled) { Log.d(getTag(), "Disconnected in ROLE_CLIENT_SECONDARY_*, " + "stop ClientModeManager=" + mClientModeManager); } // stop owner ClientModeManager, which will in turn stop this ClientModeImpl mClientModeManager.stop(); } } @Override public boolean processMessage(Message message) { boolean handleStatus = HANDLED; switch (message.what) { case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: { StateChangeResult stateChangeResult = (StateChangeResult) message.obj; SupplicantState state = handleSupplicantStateChange(stateChangeResult); // Supplicant can fail to report a NETWORK_DISCONNECTION_EVENT // when authentication times out after a successful connection, // we can figure this from the supplicant state. If supplicant // state is DISCONNECTED, but the agent is not disconnected, we // need to handle a disconnection if (mVerboseLoggingEnabled) { log("ConnectingOrConnectedState: Supplicant State change " + stateChangeResult); } if (state == SupplicantState.DISCONNECTED && mNetworkAgent != null) { if (mVerboseLoggingEnabled) { log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); } handleNetworkDisconnect(false, WIFI_DISCONNECT_REPORTED__FAILURE_CODE__SUPPLICANT_DISCONNECTED); transitionTo(mDisconnectedState); } if (state == SupplicantState.COMPLETED) { mWifiScoreReport.noteIpCheck(); } break; } case WifiMonitor.ASSOCIATED_BSSID_EVENT: { // This is where we can confirm the connection BSSID. Use it to find the // right ScanDetail to populate metrics. String someBssid = (String) message.obj; if (someBssid != null) { // Get the ScanDetail associated with this BSSID. ScanDetailCache scanDetailCache = mWifiConfigManager.getScanDetailCacheForNetwork(mTargetNetworkId); if (scanDetailCache != null) { mWifiMetrics.setConnectionScanDetail(mInterfaceName, scanDetailCache.getScanDetail(someBssid)); } // Update last associated BSSID mLastBssid = someBssid; } handleStatus = NOT_HANDLED; break; } case WifiMonitor.NETWORK_CONNECTION_EVENT: { if (mVerboseLoggingEnabled) log("Network connection established"); NetworkConnectionEventInfo connectionInfo = (NetworkConnectionEventInfo) message.obj; mLastNetworkId = connectionInfo.networkId; mSentHLPs = connectionInfo.isFilsConnection; if (mSentHLPs) mWifiMetrics.incrementL2ConnectionThroughFilsAuthCount(); mWifiConfigManager.clearRecentFailureReason(mLastNetworkId); mLastBssid = connectionInfo.bssid; // TODO: This check should not be needed after ClientModeImpl refactor. // Currently, the last connected network configuration is left in // wpa_supplicant, this may result in wpa_supplicant initiating connection // to it after a config store reload. Hence the old network Id lookups may not // work, so disconnect the network and let network selector reselect a new // network. WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config == null) { logw("Connected to unknown networkId " + mLastNetworkId + ", disconnecting..."); sendMessage(CMD_DISCONNECT, StaEvent.DISCONNECT_UNKNOWN_NETWORK); break; } mWifiInfo.setBSSID(mLastBssid); mWifiInfo.setNetworkId(mLastNetworkId); mWifiInfo.setMacAddress(mWifiNative.getMacAddress(mInterfaceName)); ScanDetailCache scanDetailCache = mWifiConfigManager.getScanDetailCacheForNetwork(config.networkId); ScanResult scanResult = null; if (scanDetailCache != null && mLastBssid != null) { scanResult = scanDetailCache.getScanResult(mLastBssid); if (scanResult != null) { mWifiInfo.setFrequency(scanResult.frequency); } } // We need to get the updated pseudonym from supplicant for EAP-SIM/AKA/AKA' if (config.enterpriseConfig != null && config.enterpriseConfig.isAuthenticationSimBased()) { mLastSubId = mWifiCarrierInfoManager.getBestMatchSubscriptionId(config); mLastSimBasedConnectionCarrierName = mWifiCarrierInfoManager.getCarrierNameForSubId(mLastSubId); String anonymousIdentity = mWifiNative.getEapAnonymousIdentity(mInterfaceName); if (!TextUtils.isEmpty(anonymousIdentity) && !WifiCarrierInfoManager .isAnonymousAtRealmIdentity(anonymousIdentity)) { String decoratedPseudonym = mWifiCarrierInfoManager .decoratePseudonymWith3GppRealm(config, anonymousIdentity); if (decoratedPseudonym != null) { anonymousIdentity = decoratedPseudonym; } if (mVerboseLoggingEnabled) { log("EAP Pseudonym: " + anonymousIdentity); } // Save the pseudonym only if it is a real one config.enterpriseConfig.setAnonymousIdentity(anonymousIdentity); } else { // Clear any stored pseudonyms config.enterpriseConfig.setAnonymousIdentity(null); } mWifiConfigManager.addOrUpdateNetwork(config, Process.WIFI_UID); if (config.isPasspoint()) { mPasspointManager.setAnonymousIdentity(config); } else if (config.fromWifiNetworkSuggestion) { mWifiNetworkSuggestionsManager.setAnonymousIdentity(config); } } // When connecting to Passpoint, ask for the Venue URL if (config.isPasspoint()) { mTermsAndConditionsUrl = null; if (scanResult == null && mLastBssid != null) { // The cached scan result of connected network would be null at the // first connection, try to check full scan result list again to look up // matched scan result associated to the current SSID and BSSID. scanResult = mScanRequestProxy.getScanResult(mLastBssid); } if (scanResult != null) { mPasspointManager.requestVenueUrlAnqpElement(scanResult); } } transitionTo(mL3ProvisioningState); break; } case WifiMonitor.NETWORK_DISCONNECTION_EVENT: { DisconnectEventInfo eventInfo = (DisconnectEventInfo) message.obj; if (mVerboseLoggingEnabled) { log("ConnectingOrConnectedState: Network disconnection " + eventInfo); } if (eventInfo.reasonCode == ReasonCode.FOURWAY_HANDSHAKE_TIMEOUT) { String bssid = !isValidBssid(eventInfo.bssid) ? mTargetBssid : eventInfo.bssid; mWifiLastResortWatchdog.noteConnectionFailureAndTriggerIfNeeded( getConnectingSsidInternal(), bssid, WifiLastResortWatchdog.FAILURE_CODE_AUTHENTICATION, isConnected()); } clearNetworkCachedDataIfNeeded( getConnectingWifiConfigurationInternal(), eventInfo.reasonCode); String targetSsid = getConnectingSsidInternal(); // If network is removed while connecting, targetSsid can be null. boolean newConnectionInProgress = targetSsid != null && !eventInfo.ssid.equals(targetSsid); if (!newConnectionInProgress) { int level2FailureReason = eventInfo.locallyGenerated ? WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN : WifiMetricsProto.ConnectionEvent.DISCONNECTION_NON_LOCAL; if (!eventInfo.locallyGenerated) { mWifiScoreCard.noteNonlocalDisconnect( mInterfaceName, eventInfo.reasonCode); } reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_NETWORK_DISCONNECTION, WifiMetricsProto.ConnectionEvent.HLF_NONE, level2FailureReason); } handleNetworkDisconnect(newConnectionInProgress, eventInfo.reasonCode); if (!newConnectionInProgress) { transitionTo(mDisconnectedState); } mTermsAndConditionsUrl = null; break; } case WifiMonitor.TARGET_BSSID_EVENT: { // Trying to associate to this BSSID if (message.obj != null) { mTargetBssid = (String) message.obj; } break; } case CMD_DISCONNECT: { mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT, message.arg1); mWifiNative.disconnect(mInterfaceName); break; } case CMD_PRE_DHCP_ACTION: case CMD_PRE_DHCP_ACTION_COMPLETE: case CMD_POST_DHCP_ACTION: case CMD_IPV4_PROVISIONING_SUCCESS: case CMD_IP_CONFIGURATION_SUCCESSFUL: case CMD_IPV4_PROVISIONING_FAILURE: { handleStatus = handleL3MessagesWhenNotConnected(message); break; } default: { handleStatus = NOT_HANDLED; break; } } if (handleStatus == HANDLED) { logStateAndMessage(message, this); } return handleStatus; } } class L2ConnectingState extends State { @Override public void enter() { if (mVerboseLoggingEnabled) Log.v(getTag(), "Entering L2ConnectingState"); // Make sure we connect: we enter this state prior to connecting to a new // network. In some cases supplicant ignores the connect requests (it might not // find the target SSID in its cache), Therefore we end up stuck that state, hence the // need for the watchdog. mConnectingWatchdogCount++; logd("Start Connecting Watchdog " + mConnectingWatchdogCount); sendMessageDelayed(obtainMessage(CMD_CONNECTING_WATCHDOG_TIMER, mConnectingWatchdogCount, 0), CONNECTING_WATCHDOG_TIMEOUT_MS); } @Override public void exit() { if (mVerboseLoggingEnabled) Log.v(getTag(), "Exiting L2ConnectingState"); } @Override public boolean processMessage(Message message) { boolean handleStatus = HANDLED; switch (message.what) { case WifiMonitor.NETWORK_NOT_FOUND_EVENT: mNetworkNotFoundEventCount++; String networkName = (String) message.obj; if (networkName != null && !networkName.equals(getConnectingSsidInternal())) { loge("Network not found event received, network: " + networkName + " which is not the target network: " + getConnectingSsidInternal()); break; } Log.d(getTag(), "Network not found event received: network: " + networkName); if (mNetworkNotFoundEventCount >= NETWORK_NOT_FOUND_EVENT_THRESHOLD && mTargetWifiConfiguration != null && mTargetWifiConfiguration.SSID != null && mTargetWifiConfiguration.SSID.equals(networkName)) { stopIpClient(); mWifiConfigManager.updateNetworkSelectionStatus( mTargetWifiConfiguration.networkId, WifiConfiguration.NetworkSelectionStatus .DISABLED_NETWORK_NOT_FOUND); if (SdkLevel.isAtLeastS()) { mWifiConfigManager.setRecentFailureAssociationStatus( mTargetWifiConfiguration.networkId, WifiConfiguration.RECENT_FAILURE_NETWORK_NOT_FOUND); } reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_NETWORK_NOT_FOUND, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); transitionTo(mDisconnectedState); // End of connection attempt. } break; case WifiMonitor.ASSOCIATION_REJECTION_EVENT: { AssocRejectEventInfo assocRejectEventInfo = (AssocRejectEventInfo) message.obj; log("L2ConnectingState: Association rejection " + assocRejectEventInfo); if (!assocRejectEventInfo.ssid.equals(getConnectingSsidInternal())) { loge("Association rejection event received on not target network"); break; } stopIpClient(); mWifiDiagnostics.triggerBugReportDataCapture( WifiDiagnostics.REPORT_REASON_ASSOC_FAILURE); String bssid = assocRejectEventInfo.bssid; boolean timedOut = assocRejectEventInfo.timedOut; int statusCode = assocRejectEventInfo.statusCode; if (!isValidBssid(bssid)) { // If BSSID is null, use the target roam BSSID bssid = mTargetBssid; } else if (SUPPLICANT_BSSID_ANY.equals(mTargetBssid)) { // This is needed by WifiBlocklistMonitor to block continuously // failing BSSIDs. Need to set here because mTargetBssid is currently // not being set until association success. mTargetBssid = bssid; } mWifiConfigManager.updateNetworkSelectionStatus(mTargetNetworkId, WifiConfiguration.NetworkSelectionStatus .DISABLED_ASSOCIATION_REJECTION); setAssociationRejectionStatusInConfig(mTargetNetworkId, assocRejectEventInfo); int level2FailureReason = WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN; if (statusCode == StatusCode.AP_UNABLE_TO_HANDLE_NEW_STA || statusCode == StatusCode.ASSOC_REJECTED_TEMPORARILY || statusCode == StatusCode.DENIED_INSUFFICIENT_BANDWIDTH) { level2FailureReason = WifiMetricsProto.ConnectionEvent .ASSOCIATION_REJECTION_AP_UNABLE_TO_HANDLE_NEW_STA; } // If rejection occurred while Metrics is tracking a ConnectionEvent, end it. reportConnectionAttemptEnd( timedOut ? WifiMetrics.ConnectionEvent.FAILURE_ASSOCIATION_TIMED_OUT : WifiMetrics.ConnectionEvent.FAILURE_ASSOCIATION_REJECTION, WifiMetricsProto.ConnectionEvent.HLF_NONE, level2FailureReason); if (level2FailureReason != WifiMetricsProto.ConnectionEvent .ASSOCIATION_REJECTION_AP_UNABLE_TO_HANDLE_NEW_STA) { mWifiLastResortWatchdog.noteConnectionFailureAndTriggerIfNeeded( getConnectingSsidInternal(), bssid, WifiLastResortWatchdog.FAILURE_CODE_ASSOCIATION, isConnected()); } transitionTo(mDisconnectedState); // End of connection attempt. break; } case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: { stopIpClient(); mWifiDiagnostics.triggerBugReportDataCapture( WifiDiagnostics.REPORT_REASON_AUTH_FAILURE); int disableReason = WifiConfiguration.NetworkSelectionStatus .DISABLED_AUTHENTICATION_FAILURE; int reasonCode = message.arg1; int errorCode = message.arg2; log("L2ConnectingState: Authentication failure " + " reason=" + reasonCode + " error=" + errorCode); WifiConfiguration targetedNetwork = mWifiConfigManager.getConfiguredNetwork(mTargetNetworkId); // Check if this is a permanent wrong password failure. if (isPermanentWrongPasswordFailure(mTargetNetworkId, reasonCode)) { disableReason = WifiConfiguration.NetworkSelectionStatus .DISABLED_BY_WRONG_PASSWORD; if (targetedNetwork != null && isPrimary()) { mWrongPasswordNotifier.onWrongPasswordError(targetedNetwork.SSID); } } else if (reasonCode == WifiManager.ERROR_AUTH_FAILURE_EAP_FAILURE) { if (targetedNetwork != null && targetedNetwork.enterpriseConfig != null && targetedNetwork.enterpriseConfig.isAuthenticationSimBased()) { // only show EAP failure notification if primary if (mEapFailureNotifier .onEapFailure(errorCode, targetedNetwork, isPrimary())) { disableReason = WifiConfiguration.NetworkSelectionStatus .DISABLED_AUTHENTICATION_PRIVATE_EAP_ERROR; mWifiBlocklistMonitor.loadCarrierConfigsForDisableReasonInfos(); } } handleEapAuthFailure(mTargetNetworkId, errorCode); if (errorCode == WifiNative.EAP_SIM_NOT_SUBSCRIBED) { disableReason = WifiConfiguration.NetworkSelectionStatus .DISABLED_AUTHENTICATION_NO_SUBSCRIPTION; } } mWifiConfigManager.updateNetworkSelectionStatus( mTargetNetworkId, disableReason); mWifiConfigManager.clearRecentFailureReason(mTargetNetworkId); //If failure occurred while Metrics is tracking a ConnnectionEvent, end it. int level2FailureReason; switch (reasonCode) { case WifiManager.ERROR_AUTH_FAILURE_NONE: level2FailureReason = WifiMetricsProto.ConnectionEvent.AUTH_FAILURE_NONE; break; case WifiManager.ERROR_AUTH_FAILURE_TIMEOUT: level2FailureReason = WifiMetricsProto.ConnectionEvent.AUTH_FAILURE_TIMEOUT; break; case WifiManager.ERROR_AUTH_FAILURE_WRONG_PSWD: level2FailureReason = WifiMetricsProto.ConnectionEvent.AUTH_FAILURE_WRONG_PSWD; break; case WifiManager.ERROR_AUTH_FAILURE_EAP_FAILURE: level2FailureReason = WifiMetricsProto.ConnectionEvent.AUTH_FAILURE_EAP_FAILURE; break; default: level2FailureReason = WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN; break; } reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_AUTHENTICATION_FAILURE, WifiMetricsProto.ConnectionEvent.HLF_NONE, level2FailureReason); if (reasonCode != WifiManager.ERROR_AUTH_FAILURE_WRONG_PSWD && reasonCode != WifiManager.ERROR_AUTH_FAILURE_EAP_FAILURE) { mWifiLastResortWatchdog.noteConnectionFailureAndTriggerIfNeeded( getConnectingSsidInternal(), (mLastBssid == null) ? mTargetBssid : mLastBssid, WifiLastResortWatchdog.FAILURE_CODE_AUTHENTICATION, isConnected()); } transitionTo(mDisconnectedState); // End of connection attempt. break; } case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: { StateChangeResult stateChangeResult = (StateChangeResult) message.obj; if (SupplicantState.isConnecting(stateChangeResult.state)) { WifiConfiguration config = mWifiConfigManager.getConfiguredNetwork( stateChangeResult.networkId); // Update Passpoint information before setNetworkDetailedState as // WifiTracker monitors NETWORK_STATE_CHANGED_ACTION to update UI. mWifiInfo.setFQDN(null); mWifiInfo.setPasspointUniqueId(null); mWifiInfo.setOsuAp(false); mWifiInfo.setProviderFriendlyName(null); if (config != null && (config.isPasspoint() || config.osu)) { if (config.isPasspoint()) { mWifiInfo.setFQDN(config.FQDN); mWifiInfo.setPasspointUniqueId(config.getPasspointUniqueId()); } else { mWifiInfo.setOsuAp(true); } mWifiInfo.setProviderFriendlyName(config.providerFriendlyName); } } sendNetworkChangeBroadcast( WifiInfo.getDetailedStateOf(stateChangeResult.state)); // Let the parent state handle the rest of the state changed. handleStatus = NOT_HANDLED; break; } case WifiMonitor.SUP_REQUEST_IDENTITY: { int netId = message.arg2; boolean identitySent = false; // For SIM & AKA/AKA' EAP method Only, get identity from ICC if (mTargetWifiConfiguration != null && mTargetWifiConfiguration.networkId == netId && mTargetWifiConfiguration.enterpriseConfig != null && mTargetWifiConfiguration.enterpriseConfig .isAuthenticationSimBased()) { // Pair Pair identityPair = mWifiCarrierInfoManager .getSimIdentity(mTargetWifiConfiguration); if (identityPair != null && identityPair.first != null) { Log.i(getTag(), "SUP_REQUEST_IDENTITY: identityPair=[" + ((identityPair.first.length() >= 7) ? identityPair.first.substring(0, 7 /* Prefix+PLMN ID */) + "****" : identityPair.first) + ", " + (!TextUtils.isEmpty(identityPair.second) ? identityPair.second : "") + "]"); mWifiNative.simIdentityResponse(mInterfaceName, identityPair.first, identityPair.second); identitySent = true; } else { Log.e(getTag(), "Unable to retrieve identity from Telephony"); } } if (!identitySent) { // Supplicant lacks credentials to connect to that network, hence black list String ssid = (String) message.obj; if (mTargetWifiConfiguration != null && ssid != null && mTargetWifiConfiguration.SSID != null && mTargetWifiConfiguration.SSID.equals("\"" + ssid + "\"")) { mWifiConfigManager.updateNetworkSelectionStatus( mTargetWifiConfiguration.networkId, WifiConfiguration.NetworkSelectionStatus .DISABLED_AUTHENTICATION_NO_CREDENTIALS); } mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT, StaEvent.DISCONNECT_GENERIC); mWifiNative.disconnect(mInterfaceName); } break; } case WifiMonitor.SUP_REQUEST_SIM_AUTH: { logd("Received SUP_REQUEST_SIM_AUTH"); SimAuthRequestData requestData = (SimAuthRequestData) message.obj; if (requestData != null) { if (requestData.protocol == WifiEnterpriseConfig.Eap.SIM) { handleGsmAuthRequest(requestData); } else if (requestData.protocol == WifiEnterpriseConfig.Eap.AKA || requestData.protocol == WifiEnterpriseConfig.Eap.AKA_PRIME) { handle3GAuthRequest(requestData); } } else { loge("Invalid SIM auth request"); } break; } case CMD_CONNECTING_WATCHDOG_TIMER: { if (mConnectingWatchdogCount == message.arg1) { if (mVerboseLoggingEnabled) log("Connecting watchdog! -> disconnect"); handleNetworkDisconnect(false, WifiStatsLog.WIFI_DISCONNECT_REPORTED__FAILURE_CODE__CONNECTING_WATCHDOG_TIMER); transitionTo(mDisconnectedState); } break; } case WifiMonitor.TRANSITION_DISABLE_INDICATION: { log("Received TRANSITION_DISABLE_INDICATION: networkId=" + message.arg1 + ", indication=" + message.arg2); mWifiConfigManager.updateNetworkTransitionDisable(message.arg1, message.arg2); break; } case WifiMonitor.NETWORK_CONNECTION_EVENT: { NetworkConnectionEventInfo connectionInfo = (NetworkConnectionEventInfo) message.obj; String quotedOrHexConnectingSsid = getConnectingSsidInternal(); String quotedOrHexConnectedSsid = NativeUtil.encodeSsid( NativeUtil.byteArrayToArrayList(connectionInfo.wifiSsid.getOctets())); if (quotedOrHexConnectingSsid != null && !quotedOrHexConnectingSsid.equals(quotedOrHexConnectedSsid)) { // possibly a NETWORK_CONNECTION_EVENT for a successful roam on the previous // network while connecting to a new network, ignore it. Log.d(TAG, "Connecting to ssid=" + quotedOrHexConnectingSsid + ", but got " + "NETWORK_CONNECTION_EVENT for ssid=" + quotedOrHexConnectedSsid + ", ignoring"); break; } handleStatus = NOT_HANDLED; break; } default: { handleStatus = NOT_HANDLED; break; } } if (handleStatus == HANDLED) { logStateAndMessage(message, this); } return handleStatus; } } class L2ConnectedState extends State { class RssiEventHandler implements WifiNative.WifiRssiEventHandler { @Override public void onRssiThresholdBreached(byte curRssi) { if (mVerboseLoggingEnabled) { Log.e(getTag(), "onRssiThresholdBreach event. Cur Rssi = " + curRssi); } sendMessage(CMD_RSSI_THRESHOLD_BREACHED, curRssi); } } RssiEventHandler mRssiEventHandler = new RssiEventHandler(); @Override public void enter() { mRssiPollToken++; if (mEnableRssiPolling) { if (isPrimary()) { mLinkProbeManager.resetOnNewConnection(); } sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0); } sendNetworkChangeBroadcast(DetailedState.CONNECTING); // If this network was explicitly selected by the user, evaluate whether to inform // ConnectivityService of that fact so the system can treat it appropriately. final WifiConfiguration config = getConnectedWifiConfigurationInternal(); final boolean explicitlySelected; // Non primary CMMs is never user selected. This prevents triggering the No Internet // dialog for those networks, which is difficult to handle. if (isPrimary() && isRecentlySelectedByTheUser(config)) { // If explicitlySelected is true, the network was selected by the user via Settings // or QuickSettings. If this network has Internet access, switch to it. Otherwise, // switch to it only if the user confirms that they really want to switch, or has // already confirmed and selected "Don't ask again". explicitlySelected = mWifiPermissionsUtil.checkNetworkSettingsPermission(config.lastConnectUid); if (mVerboseLoggingEnabled) { log("Network selected by UID " + config.lastConnectUid + " explicitlySelected=" + explicitlySelected); } } else { explicitlySelected = false; } if (mVerboseLoggingEnabled) { log("explicitlySelected=" + explicitlySelected + " acceptUnvalidated=" + config.noInternetAccessExpected); } NetworkAgentConfig.Builder naConfigBuilder = new NetworkAgentConfig.Builder() .setLegacyType(ConnectivityManager.TYPE_WIFI) .setLegacyTypeName(NETWORKTYPE) .setExplicitlySelected(explicitlySelected) .setUnvalidatedConnectivityAcceptable( explicitlySelected && config.noInternetAccessExpected) .setPartialConnectivityAcceptable(config.noInternetAccessExpected); if (config.carrierMerged) { String subscriberId = null; TelephonyManager subMgr = mTelephonyManager.createForSubscriptionId( config.subscriptionId); if (subMgr != null) { subscriberId = subMgr.getSubscriberId(); } if (subscriberId != null) { naConfigBuilder.setSubscriberId(subscriberId); } } if (mVcnManager == null && SdkLevel.isAtLeastS()) { mVcnManager = mContext.getSystemService(VcnManager.class); } if (mVcnManager != null) { mVcnPolicyChangeListener = new WifiVcnNetworkPolicyChangeListener(); mVcnManager.addVcnNetworkPolicyChangeListener(new HandlerExecutor(getHandler()), mVcnPolicyChangeListener); } final NetworkAgentConfig naConfig = naConfigBuilder.build(); final NetworkCapabilities nc = getCapabilities( getConnectedWifiConfigurationInternal(), getConnectedBssidInternal()); // This should never happen. if (mNetworkAgent != null) { Log.wtf(getTag(), "mNetworkAgent is not null: " + mNetworkAgent); mNetworkAgent.unregister(); } mNetworkAgent = mWifiInjector.makeWifiNetworkAgent(nc, mLinkProperties, naConfig, mNetworkFactory.getProvider(), new WifiNetworkAgentCallback()); mWifiScoreReport.setNetworkAgent(mNetworkAgent); // We must clear the config BSSID, as the wifi chipset may decide to roam // from this point on and having the BSSID specified in the network block would // cause the roam to faile and the device to disconnect clearTargetBssid("L2ConnectedState"); mWifiMetrics.setWifiState(mInterfaceName, WifiMetricsProto.WifiLog.WIFI_ASSOCIATED); mWifiScoreCard.noteNetworkAgentCreated(mWifiInfo, mNetworkAgent.getNetwork().getNetId()); mWifiBlocklistMonitor.handleBssidConnectionSuccess(mLastBssid, mWifiInfo.getSSID()); // too many places to record connection failure with too many failure reasons. // So only record success here. mWifiMetrics.noteFirstL2ConnectionAfterBoot(true); mCmiMonitor.onL2Connected(mClientModeManager); mIsLinkedNetworkRoaming = false; } @Override public void exit() { // This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectableState // Bug: 15347363 // For paranoia's sake, call handleNetworkDisconnect // only if BSSID is null or last networkId // is not invalid. if (mVerboseLoggingEnabled) { StringBuilder sb = new StringBuilder(); sb.append("leaving L2ConnectedState state nid=" + Integer.toString(mLastNetworkId)); if (mLastBssid != null) { sb.append(" ").append(mLastBssid); } } mWifiMetrics.setWifiState(mInterfaceName, WifiMetricsProto.WifiLog.WIFI_DISCONNECTED); mWifiStateTracker.updateState(mInterfaceName, WifiStateTracker.DISCONNECTED); // Inform WifiLockManager mWifiLockManager.updateWifiClientConnected(mClientModeManager, false); mLastConnectionCapabilities = null; } @Override public boolean processMessage(Message message) { boolean handleStatus = HANDLED; switch (message.what) { case CMD_PRE_DHCP_ACTION: { handlePreDhcpSetup(); break; } case CMD_PRE_DHCP_ACTION_COMPLETE: { if (mIpClient != null) { mIpClient.completedPreDhcpAction(); } break; } case CMD_POST_DHCP_ACTION: { handlePostDhcpSetup(); // We advance to mL3ConnectedState because IpClient will also send a // CMD_IPV4_PROVISIONING_SUCCESS message, which calls handleIPv4Success(), // which calls updateLinkProperties, which then sends // CMD_IP_CONFIGURATION_SUCCESSFUL. break; } case CMD_IPV4_PROVISIONING_SUCCESS: { handleIPv4Success((DhcpResultsParcelable) message.obj); sendNetworkChangeBroadcastWithCurrentState(); break; } case CMD_IPV4_PROVISIONING_FAILURE: { handleIPv4Failure(); mWifiLastResortWatchdog.noteConnectionFailureAndTriggerIfNeeded( getConnectingSsidInternal(), (mLastBssid == null) ? mTargetBssid : mLastBssid, WifiLastResortWatchdog.FAILURE_CODE_DHCP, isConnected()); break; } case CMD_IP_CONFIGURATION_SUCCESSFUL: { if (getConnectedWifiConfigurationInternal() == null || mNetworkAgent == null) { // The current config may have been removed while we were connecting, // trigger a disconnect to clear up state. reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_NETWORK_DISCONNECTION, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); mWifiNative.disconnect(mInterfaceName); } else { handleSuccessfulIpConfiguration(); sendConnectedState(); transitionTo(mL3ConnectedState); } break; } case CMD_IP_CONFIGURATION_LOST: { // Get Link layer stats so that we get fresh tx packet counters. getWifiLinkLayerStats(); handleIpConfigurationLost(); reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_DHCP, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); mWifiLastResortWatchdog.noteConnectionFailureAndTriggerIfNeeded( getConnectingSsidInternal(), (mLastBssid == null) ? mTargetBssid : mLastBssid, WifiLastResortWatchdog.FAILURE_CODE_DHCP, isConnected()); break; } case CMD_IP_REACHABILITY_LOST: { if (mVerboseLoggingEnabled && message.obj != null) log((String) message.obj); mWifiDiagnostics.triggerBugReportDataCapture( WifiDiagnostics.REPORT_REASON_REACHABILITY_LOST); mWifiMetrics.logWifiIsUnusableEvent(mInterfaceName, WifiIsUnusableEvent.TYPE_IP_REACHABILITY_LOST); mWifiMetrics.addToWifiUsabilityStatsList(mInterfaceName, WifiUsabilityStats.LABEL_BAD, WifiUsabilityStats.TYPE_IP_REACHABILITY_LOST, -1); if (mWifiGlobals.getIpReachabilityDisconnectEnabled()) { handleIpReachabilityLost(); } else { logd("CMD_IP_REACHABILITY_LOST but disconnect disabled -- ignore"); } break; } case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: { if (mWifiP2pConnection.shouldTemporarilyDisconnectWifi()) { mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT, StaEvent.DISCONNECT_P2P_DISCONNECT_WIFI_REQUEST); mWifiNative.disconnect(mInterfaceName); } break; } case WifiMonitor.NETWORK_CONNECTION_EVENT: { NetworkConnectionEventInfo connectionInfo = (NetworkConnectionEventInfo) message.obj; mWifiInfo.setBSSID(connectionInfo.bssid); mLastNetworkId = connectionInfo.networkId; mWifiInfo.setNetworkId(mLastNetworkId); mWifiInfo.setMacAddress(mWifiNative.getMacAddress(mInterfaceName)); if (!Objects.equals(mLastBssid, connectionInfo.bssid)) { mLastBssid = connectionInfo.bssid; sendNetworkChangeBroadcastWithCurrentState(); } if (mIsLinkedNetworkRoaming) { mIsLinkedNetworkRoaming = false; mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; mTargetWifiConfiguration = null; clearTargetBssid("AllowlistRoamingCompleted"); sendNetworkChangeBroadcast(DetailedState.CONNECTED); } break; } case CMD_ONESHOT_RSSI_POLL: { if (!mEnableRssiPolling) { updateLinkLayerStatsRssiDataStallScoreReport(); } break; } case CMD_RSSI_POLL: { // TODO(b/179792830): getBSSID() shouldn't be null in L2ConnectedState, // add debug logs in the meantime. Remove once root cause identified. if (mWifiInfo.getBSSID() == null) { Log.wtf(getTag(), "WifiInfo.getBSSID() is null in L2ConnectedState!"); break; } if (message.arg1 == mRssiPollToken) { updateLinkLayerStatsRssiDataStallScoreReport(); mWifiScoreCard.noteSignalPoll(mWifiInfo); if (isPrimary()) { mLinkProbeManager.updateConnectionStats(mWifiInfo, mInterfaceName); } sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, mRssiPollToken, 0), mWifiGlobals.getPollRssiIntervalMillis()); if (mVerboseLoggingEnabled) sendRssiChangeBroadcast(mWifiInfo.getRssi()); if (isPrimary()) { mWifiTrafficPoller.notifyOnDataActivity( mWifiInfo.txSuccess, mWifiInfo.rxSuccess); } } else { // Polling has completed } break; } case CMD_ENABLE_RSSI_POLL: { cleanWifiScore(); mEnableRssiPolling = (message.arg1 == 1); mRssiPollToken++; if (mEnableRssiPolling) { // First poll mLastSignalLevel = -1; if (isPrimary()) { mLinkProbeManager.resetOnScreenTurnedOn(); } updateLinkLayerStatsRssiSpeedFrequencyCapabilities(); sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, mRssiPollToken, 0), mWifiGlobals.getPollRssiIntervalMillis()); } break; } case WifiMonitor.ASSOCIATED_BSSID_EVENT: { if ((String) message.obj == null) { logw("Associated command w/o BSSID"); break; } mLastBssid = (String) message.obj; if (checkAndHandleLinkedNetworkRoaming(mLastBssid)) { Log.i(TAG, "Driver initiated allowlist SSID roaming"); break; } if (mLastBssid != null && (mWifiInfo.getBSSID() == null || !mLastBssid.equals(mWifiInfo.getBSSID()))) { mWifiInfo.setBSSID(mLastBssid); WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config != null) { ScanDetailCache scanDetailCache = mWifiConfigManager .getScanDetailCacheForNetwork(config.networkId); if (scanDetailCache != null) { ScanResult scanResult = scanDetailCache.getScanResult(mLastBssid); if (scanResult != null) { mWifiInfo.setFrequency(scanResult.frequency); } } } sendNetworkChangeBroadcastWithCurrentState(); } break; } case CMD_START_RSSI_MONITORING_OFFLOAD: case CMD_RSSI_THRESHOLD_BREACHED: { byte currRssi = (byte) message.arg1; processRssiThreshold(currRssi, message.what, mRssiEventHandler); break; } case CMD_STOP_RSSI_MONITORING_OFFLOAD: { stopRssiMonitoringOffload(); break; } case CMD_RECONNECT: { log(" Ignore CMD_RECONNECT request because wifi is already connected"); break; } case CMD_RESET_SIM_NETWORKS: { if (message.arg1 != RESET_SIM_REASON_SIM_INSERTED && mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { WifiConfiguration config = mWifiConfigManager.getConfiguredNetwork(mLastNetworkId); if (config != null && ((message.arg1 == RESET_SIM_REASON_DEFAULT_DATA_SIM_CHANGED && config.carrierId != TelephonyManager.UNKNOWN_CARRIER_ID) || (config.enterpriseConfig != null && config.enterpriseConfig.isAuthenticationSimBased() && !mWifiCarrierInfoManager.isSimReady(mLastSubId)))) { mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT, StaEvent.DISCONNECT_RESET_SIM_NETWORKS); // remove local PMKSA cache in framework mWifiNative.removeNetworkCachedData(mLastNetworkId); // remove network so that supplicant's PMKSA cache is cleared mWifiNative.removeAllNetworks(mInterfaceName); if (isPrimary()) { mSimRequiredNotifier.showSimRequiredNotification( config, mLastSimBasedConnectionCarrierName); } } } break; } case CMD_START_IP_PACKET_OFFLOAD: { int slot = message.arg1; int intervalSeconds = message.arg2; KeepalivePacketData pkt = (KeepalivePacketData) message.obj; int result = startWifiIPPacketOffload(slot, pkt, intervalSeconds); if (mNetworkAgent != null) { mNetworkAgent.sendSocketKeepaliveEvent(slot, result); } break; } case CMD_ADD_KEEPALIVE_PACKET_FILTER_TO_APF: { if (mIpClient != null) { final int slot = message.arg1; if (message.obj instanceof NattKeepalivePacketData) { final NattKeepalivePacketData pkt = (NattKeepalivePacketData) message.obj; mIpClient.addKeepalivePacketFilter(slot, pkt); } else if (SdkLevel.isAtLeastS()) { if (message.obj instanceof TcpKeepalivePacketData) { final TcpKeepalivePacketData pkt = (TcpKeepalivePacketData) message.obj; mIpClient.addKeepalivePacketFilter(slot, pkt); } // Otherwise unsupported keepalive data class: skip } else { // Before S, non-NattKeepalivePacketData KeepalivePacketData would be // the not-yet-SystemApi android.net.TcpKeepalivePacketData. // Attempt to parse TcpKeepalivePacketDataParcelable from the // KeepalivePacketData superclass. final TcpKeepalivePacketDataParcelable p = parseTcpKeepalivePacketData((KeepalivePacketData) message.obj); if (p != null) { mIpClient.addKeepalivePacketFilter(slot, p); } } } break; } case CMD_REMOVE_KEEPALIVE_PACKET_FILTER_FROM_APF: { if (mIpClient != null) { mIpClient.removeKeepalivePacketFilter(message.arg1); } break; } default: { handleStatus = NOT_HANDLED; break; } } if (handleStatus == HANDLED) { logStateAndMessage(message, this); } return handleStatus; } /** * Fetches link stats, updates Wifi Data Stall, Score Card and Score Report. */ private WifiLinkLayerStats updateLinkLayerStatsRssiDataStallScoreReport() { // Get Info and continue polling WifiLinkLayerStats stats = updateLinkLayerStatsRssiSpeedFrequencyCapabilities(); mWifiMetrics.updateWifiUsabilityStatsEntries(mInterfaceName, mWifiInfo, stats); // checkDataStallAndThroughputSufficiency() should be called before // mWifiScoreReport.calculateAndReportScore() which needs the latest throughput int statusDataStall = mWifiDataStall.checkDataStallAndThroughputSufficiency( mInterfaceName, mLastConnectionCapabilities, mLastLinkLayerStats, stats, mWifiInfo); if (mDataStallTriggerTimeMs == -1 && statusDataStall != WifiIsUnusableEvent.TYPE_UNKNOWN) { mDataStallTriggerTimeMs = mClock.getElapsedSinceBootMillis(); mLastStatusDataStall = statusDataStall; } if (mDataStallTriggerTimeMs != -1) { long elapsedTime = mClock.getElapsedSinceBootMillis() - mDataStallTriggerTimeMs; if (elapsedTime >= DURATION_TO_WAIT_ADD_STATS_AFTER_DATA_STALL_MS) { mDataStallTriggerTimeMs = -1; mWifiMetrics.addToWifiUsabilityStatsList(mInterfaceName, WifiUsabilityStats.LABEL_BAD, convertToUsabilityStatsTriggerType(mLastStatusDataStall), -1); mLastStatusDataStall = WifiIsUnusableEvent.TYPE_UNKNOWN; } } // Send the update score to network agent. mWifiScoreReport.calculateAndReportScore(); if (mWifiScoreReport.shouldCheckIpLayer()) { if (mIpClient != null) { mIpClient.confirmConfiguration(); } mWifiScoreReport.noteIpCheck(); } mLastLinkLayerStats = stats; return stats; } } /** * Fetches link stats and updates Wifi Score Report. */ private void updateLinkLayerStatsRssiAndScoreReport() { sendMessage(CMD_ONESHOT_RSSI_POLL); } private int convertToUsabilityStatsTriggerType(int unusableEventTriggerType) { int triggerType; switch (unusableEventTriggerType) { case WifiIsUnusableEvent.TYPE_DATA_STALL_BAD_TX: triggerType = WifiUsabilityStats.TYPE_DATA_STALL_BAD_TX; break; case WifiIsUnusableEvent.TYPE_DATA_STALL_TX_WITHOUT_RX: triggerType = WifiUsabilityStats.TYPE_DATA_STALL_TX_WITHOUT_RX; break; case WifiIsUnusableEvent.TYPE_DATA_STALL_BOTH: triggerType = WifiUsabilityStats.TYPE_DATA_STALL_BOTH; break; case WifiIsUnusableEvent.TYPE_FIRMWARE_ALERT: triggerType = WifiUsabilityStats.TYPE_FIRMWARE_ALERT; break; case WifiIsUnusableEvent.TYPE_IP_REACHABILITY_LOST: triggerType = WifiUsabilityStats.TYPE_IP_REACHABILITY_LOST; break; default: triggerType = WifiUsabilityStats.TYPE_UNKNOWN; Log.e(getTag(), "Unknown WifiIsUnusableEvent: " + unusableEventTriggerType); } return triggerType; } class L3ProvisioningState extends State { @Override public void enter() { WifiConfiguration currentConfig = getConnectedWifiConfigurationInternal(); if (mIpClientWithPreConnection && mIpClient != null) { mIpClient.notifyPreconnectionComplete(mSentHLPs); mIpClientWithPreConnection = false; mSentHLPs = false; } else { startIpClient(currentConfig, false); } // Get Link layer stats so as we get fresh tx packet counters getWifiLinkLayerStats(); } @Override public boolean processMessage(Message message) { boolean handleStatus = HANDLED; switch(message.what) { case WifiMonitor.NETWORK_DISCONNECTION_EVENT: { DisconnectEventInfo eventInfo = (DisconnectEventInfo) message.obj; reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_NETWORK_DISCONNECTION, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); mWifiLastResortWatchdog.noteConnectionFailureAndTriggerIfNeeded( getConnectingSsidInternal(), !isValidBssid(eventInfo.bssid) ? mTargetBssid : eventInfo.bssid, WifiLastResortWatchdog.FAILURE_CODE_DHCP, isConnected()); handleStatus = NOT_HANDLED; break; } default: { handleStatus = NOT_HANDLED; break; } } if (handleStatus == HANDLED) { logStateAndMessage(message, this); } return handleStatus; } } /** * Helper function to check if a network has been recently selected by the user. * (i.e less than {@link #LAST_SELECTED_NETWORK_EXPIRATION_AGE_MILLIS) before). */ @VisibleForTesting public boolean isRecentlySelectedByTheUser(@NonNull WifiConfiguration currentConfig) { long currentTimeMillis = mClock.getElapsedSinceBootMillis(); return mWifiConfigManager.getLastSelectedNetwork() == currentConfig.networkId && currentTimeMillis - mWifiConfigManager.getLastSelectedTimeStamp() < LAST_SELECTED_NETWORK_EXPIRATION_AGE_MILLIS; } private void sendConnectedState() { mNetworkAgent.markConnected(); sendNetworkChangeBroadcast(DetailedState.CONNECTED); } class RoamingState extends State { boolean mAssociated; @Override public void enter() { if (mVerboseLoggingEnabled) { log("RoamingState Enter mScreenOn=" + mScreenOn); } // Make sure we disconnect if roaming fails mRoamWatchdogCount++; logd("Start Roam Watchdog " + mRoamWatchdogCount); sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER, mRoamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC); mAssociated = false; } @Override public boolean processMessage(Message message) { boolean handleStatus = HANDLED; switch (message.what) { case CMD_IP_CONFIGURATION_LOST: { WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config != null) { mWifiDiagnostics.triggerBugReportDataCapture( WifiDiagnostics.REPORT_REASON_AUTOROAM_FAILURE); } handleStatus = NOT_HANDLED; break; } case CMD_UNWANTED_NETWORK: { if (mVerboseLoggingEnabled) { log("Roaming and CS doesn't want the network -> ignore"); } break; } case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: { /** * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT * before NETWORK_DISCONNECTION_EVENT * And there is an associated BSSID corresponding to our target BSSID, then * we have missed the network disconnection, transition to mDisconnectedState * and handle the rest of the events there. */ StateChangeResult stateChangeResult = (StateChangeResult) message.obj; SupplicantState state = handleSupplicantStateChange(stateChangeResult); if (state == SupplicantState.DISCONNECTED || state == SupplicantState.INACTIVE || state == SupplicantState.INTERFACE_DISABLED) { if (mVerboseLoggingEnabled) { log("RoamingState: Supplicant State change " + stateChangeResult); } handleNetworkDisconnect(false, WIFI_DISCONNECT_REPORTED__FAILURE_CODE__SUPPLICANT_DISCONNECTED); transitionTo(mDisconnectedState); } if (stateChangeResult.state == SupplicantState.ASSOCIATED) { // We completed the layer2 roaming part mAssociated = true; mTargetBssid = stateChangeResult.bssid; } break; } case CMD_ROAM_WATCHDOG_TIMER: { if (mRoamWatchdogCount == message.arg1) { if (mVerboseLoggingEnabled) log("roaming watchdog! -> disconnect"); mWifiMetrics.endConnectionEvent( mInterfaceName, WifiMetrics.ConnectionEvent.FAILURE_ROAM_TIMEOUT, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN, mWifiInfo.getFrequency()); mRoamFailCount++; handleNetworkDisconnect(false, WifiStatsLog.WIFI_DISCONNECT_REPORTED__FAILURE_CODE__ROAM_WATCHDOG_TIMER); mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT, StaEvent.DISCONNECT_ROAM_WATCHDOG_TIMER); mWifiNative.disconnect(mInterfaceName); transitionTo(mDisconnectedState); } break; } case WifiMonitor.NETWORK_CONNECTION_EVENT: { if (mAssociated) { if (mVerboseLoggingEnabled) { log("roaming and Network connection established"); } NetworkConnectionEventInfo connectionInfo = (NetworkConnectionEventInfo) message.obj; mLastNetworkId = connectionInfo.networkId; mLastBssid = connectionInfo.bssid; mWifiInfo.setBSSID(mLastBssid); mWifiInfo.setNetworkId(mLastNetworkId); sendNetworkChangeBroadcastWithCurrentState(); // Successful framework roam! (probably) mWifiBlocklistMonitor.handleBssidConnectionSuccess(mLastBssid, mWifiInfo.getSSID()); reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_NONE, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); // We must clear the config BSSID, as the wifi chipset may decide to roam // from this point on and having the BSSID specified by QNS would cause // the roam to fail and the device to disconnect. // When transition from RoamingState to DisconnectedState, the config BSSID // is cleared by handleNetworkDisconnect(). clearTargetBssid("RoamingCompleted"); // We used to transition to L3ProvisioningState in an // attempt to do DHCPv4 RENEWs on framework roams. // DHCP can take too long to time out, and we now rely // upon IpClient's use of IpReachabilityMonitor to // confirm our current network configuration. // // mIpClient.confirmConfiguration() is called within // the handling of SupplicantState.COMPLETED. transitionTo(mL3ConnectedState); } else { mMessageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD; } break; } case WifiMonitor.NETWORK_DISCONNECTION_EVENT: { // Throw away but only if it corresponds to the network we're roaming to DisconnectEventInfo eventInfo = (DisconnectEventInfo) message.obj; if (true) { String target = ""; if (mTargetBssid != null) target = mTargetBssid; log("NETWORK_DISCONNECTION_EVENT in roaming state" + " BSSID=" + eventInfo.bssid + " target=" + target); } clearNetworkCachedDataIfNeeded( getConnectingWifiConfigurationInternal(), eventInfo.reasonCode); if (eventInfo.bssid.equals(mTargetBssid)) { handleNetworkDisconnect(false, eventInfo.reasonCode); transitionTo(mDisconnectedState); } break; } default: { handleStatus = NOT_HANDLED; break; } } if (handleStatus == HANDLED) { logStateAndMessage(message, this); } return handleStatus; } @Override public void exit() { logd("ClientModeImpl: Leaving Roaming state"); } } class L3ConnectedState extends State { @Override public void enter() { if (mVerboseLoggingEnabled) { log("Enter ConnectedState mScreenOn=" + mScreenOn); } reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_NONE, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); mWifiConnectivityManager.handleConnectionStateChanged( mClientModeManager, WifiConnectivityManager.WIFI_STATE_CONNECTED); registerConnected(); mTargetWifiConfiguration = null; mWifiScoreReport.reset(); mLastSignalLevel = -1; // Not roaming anymore mIsAutoRoaming = false; mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; mWifiLastResortWatchdog.connectedStateTransition(true); mWifiStateTracker.updateState(mInterfaceName, WifiStateTracker.CONNECTED); // Inform WifiLockManager mWifiLockManager.updateWifiClientConnected(mClientModeManager, true); WifiConfiguration config = getConnectedWifiConfigurationInternal(); mWifiScoreReport.startConnectedNetworkScorer( mNetworkAgent.getNetwork().getNetId(), isRecentlySelectedByTheUser(config)); updateLinkLayerStatsRssiAndScoreReport(); mWifiScoreCard.noteIpConfiguration(mWifiInfo); // too many places to record L3 failure with too many failure reasons. // So only record success here. mWifiMetrics.noteFirstL3ConnectionAfterBoot(true); } @Override public boolean processMessage(Message message) { boolean handleStatus = HANDLED; switch (message.what) { case CMD_UNWANTED_NETWORK: { if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) { mWifiMetrics.logStaEvent(mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT, StaEvent.DISCONNECT_UNWANTED); if (mClientModeManager.getRole() == ROLE_CLIENT_SECONDARY_TRANSIENT && mClientModeManager.getPreviousRole() == ROLE_CLIENT_PRIMARY) { mWifiMetrics.incrementMakeBeforeBreakLingerCompletedCount( mClock.getElapsedSinceBootMillis() - mClientModeManager.getLastRoleChangeSinceBootMs()); } mWifiNative.disconnect(mInterfaceName); } else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN || message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) { Log.d(getTag(), (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN ? "NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN" : "NETWORK_STATUS_UNWANTED_VALIDATION_FAILED")); WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config != null) { // Disable autojoin if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) { mWifiConfigManager.setNetworkValidatedInternetAccess( config.networkId, false); mWifiConfigManager.updateNetworkSelectionStatus(config.networkId, DISABLED_NO_INTERNET_PERMANENT); } else { // stop collect last-mile stats since validation fail removeMessages(CMD_DIAGS_CONNECT_TIMEOUT); mWifiDiagnostics.reportConnectionEvent( WifiDiagnostics.CONNECTION_EVENT_FAILED, mClientModeManager); mWifiConfigManager.incrementNetworkNoInternetAccessReports( config.networkId); // If this was not recently selected by the user, update network // selection status to temporarily disable the network. if (!isRecentlySelectedByTheUser(config) && !config.noInternetAccessExpected) { Log.i(getTag(), "Temporarily disabling network because of" + " no-internet access"); mWifiConfigManager.updateNetworkSelectionStatus( config.networkId, DISABLED_NO_INTERNET_TEMPORARY); mWifiBlocklistMonitor.handleBssidConnectionFailure( mLastBssid, config.SSID, WifiBlocklistMonitor.REASON_NETWORK_VALIDATION_FAILURE, mWifiInfo.getRssi()); } mWifiScoreCard.noteValidationFailure(mWifiInfo); } } if (mClientModeManager.getRole() == ROLE_CLIENT_SECONDARY_TRANSIENT) { Log.d(getTag(), "Internet validation failed during MBB," + " disconnecting ClientModeManager=" + mClientModeManager); mWifiMetrics.logStaEvent( mInterfaceName, StaEvent.TYPE_FRAMEWORK_DISCONNECT, StaEvent.DISCONNECT_MBB_NO_INTERNET); mWifiMetrics.incrementMakeBeforeBreakNoInternetCount(); mWifiNative.disconnect(mInterfaceName); } } break; } case CMD_NETWORK_STATUS: { if (message.arg1 == NetworkAgent.VALIDATION_STATUS_VALID) { // stop collect last-mile stats since validation pass removeMessages(CMD_DIAGS_CONNECT_TIMEOUT); mWifiDiagnostics.reportConnectionEvent( WifiDiagnostics.CONNECTION_EVENT_SUCCEEDED, mClientModeManager); mWifiScoreCard.noteValidationSuccess(mWifiInfo); mWifiBlocklistMonitor.handleNetworkValidationSuccess(mLastBssid, mWifiInfo.getSSID()); WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (config != null) { // re-enable autojoin mWifiConfigManager.updateNetworkSelectionStatus( config.networkId, WifiConfiguration.NetworkSelectionStatus .DISABLED_NONE); mWifiConfigManager.setNetworkValidatedInternetAccess( config.networkId, true); if (config.isPasspoint() && mTermsAndConditionsUrl != null) { // Clear the T&C after the user accepted them and the we are // notified that the network validation is successful mTermsAndConditionsUrl = null; LinkProperties newLp = new LinkProperties(mLinkProperties); addPasspointInfoToLinkProperties(newLp); sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp); mWifiMetrics .incrementTotalNumberOfPasspointAcceptanceOfTermsAndConditions(); } if (retrieveConnectedNetworkDefaultGateway()) { updateLinkedNetworks(config); } } mCmiMonitor.onInternetValidated(mClientModeManager); } break; } case CMD_ACCEPT_UNVALIDATED: { boolean accept = (message.arg1 != 0); mWifiConfigManager.setNetworkNoInternetAccessExpected(mLastNetworkId, accept); break; } case WifiMonitor.NETWORK_DISCONNECTION_EVENT: { DisconnectEventInfo eventInfo = (DisconnectEventInfo) message.obj; reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_NETWORK_DISCONNECTION, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); if (unexpectedDisconnectedReason(eventInfo.reasonCode)) { mWifiDiagnostics.triggerBugReportDataCapture( WifiDiagnostics.REPORT_REASON_UNEXPECTED_DISCONNECT); } if (!eventInfo.locallyGenerated) { // ignore disconnects initiated by wpa_supplicant. mWifiScoreCard.noteNonlocalDisconnect(mInterfaceName, eventInfo.reasonCode); int rssi = mWifiInfo.getRssi(); mWifiBlocklistMonitor.handleBssidConnectionFailure(mWifiInfo.getBSSID(), mWifiInfo.getSSID(), WifiBlocklistMonitor.REASON_ABNORMAL_DISCONNECT, rssi); } WifiConfiguration config = getConnectedWifiConfigurationInternal(); if (mVerboseLoggingEnabled) { log("NETWORK_DISCONNECTION_EVENT in connected state" + " BSSID=" + mWifiInfo.getBSSID() + " RSSI=" + mWifiInfo.getRssi() + " freq=" + mWifiInfo.getFrequency() + " reason=" + eventInfo.reasonCode + " Network Selection Status=" + (config == null ? "Unavailable" : config.getNetworkSelectionStatus().getNetworkStatusString())); } handleNetworkDisconnect(false, eventInfo.reasonCode); transitionTo(mDisconnectedState); break; } case CMD_START_ROAM: { /* Connect command coming from auto-join */ int netId = message.arg1; String bssid = (String) message.obj; if (bssid == null) { bssid = SUPPLICANT_BSSID_ANY; } WifiConfiguration config = mWifiConfigManager.getConfiguredNetworkWithoutMasking(netId); if (config == null) { loge("CMD_START_ROAM and no config, bail out..."); break; } mLastScanRssi = mWifiConfigManager.findScanRssi(netId, mWifiHealthMonitor.getScanRssiValidTimeMs()); mWifiScoreCard.noteConnectionAttempt(mWifiInfo, mLastScanRssi, config.SSID); setTargetBssid(config, bssid); mTargetNetworkId = netId; logd("CMD_START_ROAM sup state " + " my state " + getCurrentState().getName() + " nid=" + Integer.toString(netId) + " config " + config.getProfileKey() + " targetRoamBSSID " + mTargetBssid); reportConnectionAttemptStart(config, mTargetBssid, WifiMetricsProto.ConnectionEvent.ROAM_ENTERPRISE); if (mWifiNative.roamToNetwork(mInterfaceName, config)) { mTargetWifiConfiguration = config; mIsAutoRoaming = true; mWifiMetrics.logStaEvent( mInterfaceName, StaEvent.TYPE_CMD_START_ROAM, config); transitionTo(mRoamingState); } else { loge("CMD_START_ROAM Failed to start roaming to network " + config); reportConnectionAttemptEnd( WifiMetrics.ConnectionEvent.FAILURE_CONNECT_NETWORK_FAILED, WifiMetricsProto.ConnectionEvent.HLF_NONE, WifiMetricsProto.ConnectionEvent.FAILURE_REASON_UNKNOWN); mMessageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL; break; } break; } case CMD_IP_CONFIGURATION_LOST: { mWifiMetrics.incrementIpRenewalFailure(); handleStatus = NOT_HANDLED; break; } default: { handleStatus = NOT_HANDLED; break; } } if (handleStatus == HANDLED) { logStateAndMessage(message, this); } return handleStatus; } @Override public void exit() { logd("ClientModeImpl: Leaving Connected state"); mWifiConnectivityManager.handleConnectionStateChanged( mClientModeManager, WifiConnectivityManager.WIFI_STATE_TRANSITIONING); mWifiLastResortWatchdog.connectedStateTransition(false); } } class DisconnectedState extends State { @Override public void enter() { Log.i(getTag(), "disconnectedstate enter"); // We don't scan frequently if this is a temporary disconnect // due to p2p if (mWifiP2pConnection.shouldTemporarilyDisconnectWifi()) { // TODO(b/161569371): P2P should wait for all ClientModeImpls to enter // DisconnectedState, not just one instance. // (Does P2P Service support STA+P2P concurrency?) mWifiP2pConnection.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); return; } if (mVerboseLoggingEnabled) { logd(" Enter DisconnectedState screenOn=" + mScreenOn); } /** clear the roaming state, if we were roaming, we failed */ mIsAutoRoaming = false; mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID; mWifiConnectivityManager.handleConnectionStateChanged( mClientModeManager, WifiConnectivityManager.WIFI_STATE_DISCONNECTED); } @Override public boolean processMessage(Message message) { boolean handleStatus = HANDLED; switch (message.what) { case CMD_RECONNECT: case CMD_REASSOCIATE: { if (mWifiP2pConnection.shouldTemporarilyDisconnectWifi()) { // Drop a third party reconnect/reassociate if STA is // temporarily disconnected for p2p break; } else { // ConnectableState handles it handleStatus = NOT_HANDLED; } break; } default: { handleStatus = NOT_HANDLED; break; } } if (handleStatus == HANDLED) { logStateAndMessage(message, this); } return handleStatus; } @Override public void exit() { mWifiConnectivityManager.handleConnectionStateChanged( mClientModeManager, WifiConnectivityManager.WIFI_STATE_TRANSITIONING); } } void handleGsmAuthRequest(SimAuthRequestData requestData) { WifiConfiguration requestingWifiConfiguration = null; if (mTargetWifiConfiguration != null && mTargetWifiConfiguration.networkId == requestData.networkId) { requestingWifiConfiguration = mTargetWifiConfiguration; logd("id matches targetWifiConfiguration"); } else if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID && mLastNetworkId == requestData.networkId) { requestingWifiConfiguration = getConnectedWifiConfigurationInternal(); logd("id matches currentWifiConfiguration"); } if (requestingWifiConfiguration == null) { logd("GsmAuthRequest received with null target/current WifiConfiguration."); return; } /* * Try authentication in the following order. * * Standard Cellular_auth Type Command * * 1. 3GPP TS 31.102 3G_authentication [Length][RAND][Length][AUTN] * [Length][RES][Length][CK][Length][IK] and more * 2. 3GPP TS 31.102 2G_authentication [Length][RAND] * [Length][SRES][Length][Cipher Key Kc] * 3. 3GPP TS 11.11 2G_authentication [RAND] * [SRES][Cipher Key Kc] */ String response = mWifiCarrierInfoManager .getGsmSimAuthResponse(requestData.data, requestingWifiConfiguration); if (response == null) { // In case of failure, issue may be due to sim type, retry as No.2 case response = mWifiCarrierInfoManager .getGsmSimpleSimAuthResponse(requestData.data, requestingWifiConfiguration); if (response == null) { // In case of failure, issue may be due to sim type, retry as No.3 case response = mWifiCarrierInfoManager.getGsmSimpleSimNoLengthAuthResponse( requestData.data, requestingWifiConfiguration); } } if (response == null || response.length() == 0) { mWifiNative.simAuthFailedResponse(mInterfaceName); } else { logv("Supplicant Response -" + response); mWifiNative.simAuthResponse( mInterfaceName, WifiNative.SIM_AUTH_RESP_TYPE_GSM_AUTH, response); } } void handle3GAuthRequest(SimAuthRequestData requestData) { WifiConfiguration requestingWifiConfiguration = null; if (mTargetWifiConfiguration != null && mTargetWifiConfiguration.networkId == requestData.networkId) { requestingWifiConfiguration = mTargetWifiConfiguration; logd("id matches targetWifiConfiguration"); } else if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID && mLastNetworkId == requestData.networkId) { requestingWifiConfiguration = getConnectedWifiConfigurationInternal(); logd("id matches currentWifiConfiguration"); } if (requestingWifiConfiguration == null) { logd("3GAuthRequest received with null target/current WifiConfiguration."); return; } SimAuthResponseData response = mWifiCarrierInfoManager .get3GAuthResponse(requestData, requestingWifiConfiguration); if (response != null) { mWifiNative.simAuthResponse( mInterfaceName, response.type, response.response); } else { mWifiNative.umtsAuthFailedResponse(mInterfaceName); } } /** * Automatically connect to the network specified * * @param networkId ID of the network to connect to * @param uid UID of the app triggering the connection. * @param bssid BSSID of the network */ public void startConnectToNetwork(int networkId, int uid, String bssid) { sendMessage(CMD_START_CONNECT, networkId, uid, bssid); } /** * Automatically roam to the network specified * * @param networkId ID of the network to roam to * @param bssid BSSID of the access point to roam to. */ public void startRoamToNetwork(int networkId, String bssid) { sendMessage(CMD_START_ROAM, networkId, 0, bssid); } /** * @param reason reason code from supplicant on network disconnected event * @return true if this is a suspicious disconnect */ static boolean unexpectedDisconnectedReason(int reason) { return reason == ReasonCode.PREV_AUTH_NOT_VALID || reason == ReasonCode.CLASS2_FRAME_FROM_NONAUTH_STA || reason == ReasonCode.CLASS3_FRAME_FROM_NONASSOC_STA || reason == ReasonCode.DISASSOC_STA_HAS_LEFT || reason == ReasonCode.STA_REQ_ASSOC_WITHOUT_AUTH || reason == ReasonCode.MICHAEL_MIC_FAILURE || reason == ReasonCode.FOURWAY_HANDSHAKE_TIMEOUT || reason == ReasonCode.GROUP_KEY_UPDATE_TIMEOUT || reason == ReasonCode.GROUP_CIPHER_NOT_VALID || reason == ReasonCode.PAIRWISE_CIPHER_NOT_VALID || reason == ReasonCode.IEEE_802_1X_AUTH_FAILED || reason == ReasonCode.DISASSOC_LOW_ACK; } private static String getLinkPropertiesSummary(LinkProperties lp) { List attributes = new ArrayList<>(6); if (lp.hasIpv4Address()) { attributes.add("v4"); } if (lp.hasIpv4DefaultRoute()) { attributes.add("v4r"); } if (lp.hasIpv4DnsServer()) { attributes.add("v4dns"); } if (lp.hasGlobalIpv6Address()) { attributes.add("v6"); } if (lp.hasIpv6DefaultRoute()) { attributes.add("v6r"); } if (lp.hasIpv6DnsServer()) { attributes.add("v6dns"); } return TextUtils.join(" ", attributes); } /** * Gets the SSID from the WifiConfiguration pointed at by 'mTargetNetworkId' * This should match the network config framework is attempting to connect to. */ private String getConnectingSsidInternal() { WifiConfiguration config = getConnectingWifiConfigurationInternal(); return config != null ? config.SSID : null; } /** * Check if there is any connection request for WiFi network. */ private boolean hasConnectionRequests() { return mNetworkFactory.hasConnectionRequests() || mUntrustedNetworkFactory.hasConnectionRequests() || mOemWifiNetworkFactory.hasConnectionRequests(); } /** * Retrieve the factory MAC address from config store (stored on first bootup). If we don't have * a factory MAC address stored in config store, retrieve it now and store it. * * Note: *

  • This is needed to ensure that we use the same MAC address for connecting to * networks with MAC randomization disabled regardless of whether the connection is * occurring on "wlan0" or "wlan1" due to STA + STA.
    • *
  • Retries added to deal with any transient failures when invoking * {@link WifiNative#getStaFactoryMacAddress(String)}. */ @Nullable private MacAddress retrieveFactoryMacAddressAndStoreIfNecessary() { // Already present, just return. String factoryMacAddressStr = mSettingsConfigStore.get(WIFI_STA_FACTORY_MAC_ADDRESS); if (factoryMacAddressStr != null) return MacAddress.fromString(factoryMacAddressStr); MacAddress factoryMacAddress = mWifiNative.getStaFactoryMacAddress(mInterfaceName); if (factoryMacAddress == null) { // the device may be running an older HAL (version < 1.3). Log.w(TAG, "Failed to retrieve factory MAC address"); return null; } Log.i(TAG, "Factory MAC address retrieved and stored in config store: " + factoryMacAddress); mSettingsConfigStore.put(WIFI_STA_FACTORY_MAC_ADDRESS, factoryMacAddress.toString()); return factoryMacAddress; } /** * Gets the factory MAC address of wlan0 (station interface). * @return String representation of the factory MAC address. */ @Nullable public String getFactoryMacAddress() { MacAddress factoryMacAddress = retrieveFactoryMacAddressAndStoreIfNecessary(); if (factoryMacAddress != null) return factoryMacAddress.toString(); // For devices with older HAL's (version < 1.3), no API exists to retrieve factory MAC // address (and also does not support MAC randomization - needs verson 1.2). So, just // return the regular MAC address from the interface. if (!mWifiGlobals.isConnectedMacRandomizationEnabled()) { Log.w(TAG, "Can't get factory MAC address, return the MAC address"); return mWifiNative.getMacAddress(mInterfaceName); } return null; } /** Sends a link probe. */ public void probeLink(LinkProbeCallback callback, int mcs) { String bssid = mWifiInfo.getBSSID(); if (bssid == null) { Log.w(getTag(), "Attempted to send link probe when not connected!"); callback.onFailure(LinkProbeCallback.LINK_PROBE_ERROR_NOT_CONNECTED); return; } mWifiNative.probeLink(mInterfaceName, MacAddress.fromString(bssid), callback, mcs); } private static class ConnectNetworkMessage { public final NetworkUpdateResult result; public final ActionListenerWrapper listener; ConnectNetworkMessage(NetworkUpdateResult result, ActionListenerWrapper listener) { this.result = result; this.listener = listener; } } /** Trigger network connection and provide status via the provided callback. */ public void connectNetwork(NetworkUpdateResult result, ActionListenerWrapper wrapper, int callingUid) { Message message = obtainMessage(CMD_CONNECT_NETWORK, new ConnectNetworkMessage(result, wrapper)); message.sendingUid = callingUid; sendMessage(message); } /** Trigger network save and provide status via the provided callback. */ public void saveNetwork(NetworkUpdateResult result, ActionListenerWrapper wrapper, int callingUid) { Message message = obtainMessage(CMD_SAVE_NETWORK, new ConnectNetworkMessage(result, wrapper)); message.sendingUid = callingUid; sendMessage(message); } /** * Handle BSS transition request from Connected BSS. * * @param frameData Data retrieved from received BTM request frame. */ private void handleBssTransitionRequest(BtmFrameData frameData) { if (frameData == null) { return; } String bssid = mWifiInfo.getBSSID(); String ssid = mWifiInfo.getSSID(); if ((bssid == null) || (ssid == null) || WifiManager.UNKNOWN_SSID.equals(ssid)) { Log.e(getTag(), "Failed to handle BSS transition: bssid: " + bssid + " ssid: " + ssid); return; } mWifiMetrics.incrementSteeringRequestCount(); if ((frameData.mBssTmDataFlagsMask & MboOceConstants.BTM_DATA_FLAG_MBO_CELL_DATA_CONNECTION_PREFERENCE_INCLUDED) != 0) { mWifiMetrics.incrementMboCellularSwitchRequestCount(); } if ((frameData.mBssTmDataFlagsMask & MboOceConstants.BTM_DATA_FLAG_DISASSOCIATION_IMMINENT) != 0) { long duration = 0; if ((frameData.mBssTmDataFlagsMask & MboOceConstants.BTM_DATA_FLAG_MBO_ASSOC_RETRY_DELAY_INCLUDED) != 0) { mWifiMetrics.incrementSteeringRequestCountIncludingMboAssocRetryDelay(); duration = frameData.mBlockListDurationMs; } if (duration == 0) { /* * When disassoc imminent bit alone is set or MBO assoc retry delay is * set to zero(reserved as per spec), blocklist the BSS for sometime to * avoid AP rejecting the re-connect request. */ duration = MboOceConstants.DEFAULT_BLOCKLIST_DURATION_MS; } // Blocklist the current BSS mWifiBlocklistMonitor.blockBssidForDurationMs(bssid, ssid, duration, WifiBlocklistMonitor.REASON_FRAMEWORK_DISCONNECT_MBO_OCE, 0); } if (frameData.mStatus != MboOceConstants.BTM_RESPONSE_STATUS_ACCEPT) { // Trigger the network selection and re-connect to new network if available. mWifiMetrics.incrementForceScanCountDueToSteeringRequest(); mWifiConnectivityManager.forceConnectivityScan(ClientModeImpl.WIFI_WORK_SOURCE); } } /** * @return true if this device supports FILS-SHA256 */ private boolean isFilsSha256Supported() { return (getSupportedFeatures() & WIFI_FEATURE_FILS_SHA256) != 0; } /** * @return true if this device supports FILS-SHA384 */ private boolean isFilsSha384Supported() { return (getSupportedFeatures() & WIFI_FEATURE_FILS_SHA384) != 0; } /** * Helper method to set the allowed key management schemes from * scan result. * When the AKM is updated, changes should be propagated to the * actual saved network, and the correct AKM could be retrieved * on selecting the security params. */ private void updateAllowedKeyManagementSchemesFromScanResult( WifiConfiguration config, ScanResult scanResult) { config.enableFils( isFilsSha256Supported() && ScanResultUtil.isScanResultForFilsSha256Network(scanResult), isFilsSha384Supported() && ScanResultUtil.isScanResultForFilsSha384Network(scanResult)); mWifiConfigManager.updateFilsAkms(config.networkId, config.isFilsSha256Enabled(), config.isFilsSha384Enabled()); } /** * Update wifi configuration based on the matching scan result. * * @param config Wifi configuration object. * @param scanResult Scan result matching the network. */ private void updateWifiConfigFromMatchingScanResult(WifiConfiguration config, ScanResult scanResult) { updateAllowedKeyManagementSchemesFromScanResult(config, scanResult); if (config.isFilsSha256Enabled() || config.isFilsSha384Enabled()) { config.enterpriseConfig.setFieldValue(WifiEnterpriseConfig.EAP_ERP, "1"); } } private void selectCandidateSecurityParamsIfNecessary( WifiConfiguration config, List scanResults) { if (null != config.getNetworkSelectionStatus().getCandidateSecurityParams()) return; // This comes from wifi picker directly so there is no candidate security params. // Run network selection against this SSID. List scanDetailsList = scanResults.stream() .filter(scanResult -> config.SSID.equals( ScanResultUtil.createQuotedSSID(scanResult.SSID))) .map(ScanResultUtil::toScanDetail) .collect(Collectors.toList()); List cmmState = new ArrayList<>(); cmmState.add(new WifiNetworkSelector.ClientModeManagerState(mClientModeManager)); List candidates = mWifiNetworkSelector.getCandidatesFromScan( scanDetailsList, new HashSet(), cmmState, true, true, true); WifiConfiguration selectedConfig = mWifiNetworkSelector.selectNetwork(candidates); if (null != selectedConfig && selectedConfig.networkId == config.networkId) { config.getNetworkSelectionStatus().setCandidateSecurityParams( selectedConfig.getNetworkSelectionStatus().getCandidateSecurityParams()); return; } // When a connecting request comes from network request or adding a network via // API directly, there might be no scan result to know the proper security params. // In this case, we use the first available security params to have a try first. Log.i(getTag(), "Cannot select a candidate security params from scan results," + "try to select the first available security params."); SecurityParams defaultParams = config.getSecurityParamsList().stream() .filter(WifiConfigurationUtil::isSecurityParamsValid) .findFirst().orElse(null); config.getNetworkSelectionStatus().setCandidateSecurityParams(defaultParams); // populate the target security params to the internal configuration manually, // and then wifi info could retrieve this information. mWifiConfigManager.setNetworkCandidateScanResult( config.networkId, null, 0, defaultParams); } /** * Update the wifi configuration before sending connect to * supplicant/driver. * * @param config wifi configuration object. * @param bssid BSSID to assocaite with. */ void updateWifiConfigOnStartConnection(WifiConfiguration config, String bssid) { setTargetBssid(config, bssid); // Go through the matching scan results and update wifi config. ScanResultMatchInfo key1 = ScanResultMatchInfo.fromWifiConfiguration(config); List scanResults = mScanRequestProxy.getScanResults(); for (ScanResult scanResult : scanResults) { if (!config.SSID.equals(ScanResultUtil.createQuotedSSID(scanResult.SSID))) { continue; } ScanResultMatchInfo key2 = ScanResultMatchInfo.fromScanResult(scanResult); if (!key1.equals(key2)) { continue; } updateWifiConfigFromMatchingScanResult(config, scanResult); } selectCandidateSecurityParamsIfNecessary(config, scanResults); if (mWifiGlobals.isConnectedMacRandomizationEnabled()) { if (config.macRandomizationSetting != WifiConfiguration.RANDOMIZATION_NONE) { configureRandomizedMacAddress(config); } else { setCurrentMacToFactoryMac(config); } } if (config.enterpriseConfig != null && config.enterpriseConfig.isAuthenticationSimBased() && mWifiCarrierInfoManager.isImsiEncryptionInfoAvailable( mWifiCarrierInfoManager.getBestMatchSubscriptionId(config)) && TextUtils.isEmpty(config.enterpriseConfig.getAnonymousIdentity())) { String anonAtRealm = mWifiCarrierInfoManager .getAnonymousIdentityWith3GppRealm(config); // Use anonymous@ when pseudonym is not available config.enterpriseConfig.setAnonymousIdentity(anonAtRealm); } } private void setConfigurationsPriorToIpClientProvisioning(WifiConfiguration config) { mIpClient.setHttpProxy(config.getHttpProxy()); if (!TextUtils.isEmpty(mContext.getResources().getString( R.string.config_wifi_tcp_buffers))) { mIpClient.setTcpBufferSizes(mContext.getResources().getString( R.string.config_wifi_tcp_buffers)); } } private boolean startIpClient(WifiConfiguration config, boolean isFilsConnection) { if (mIpClient == null) { return false; } final boolean isUsingStaticIp = (config.getIpAssignment() == IpConfiguration.IpAssignment.STATIC); final boolean isUsingMacRandomization = config.macRandomizationSetting != WifiConfiguration.RANDOMIZATION_NONE && mWifiGlobals.isConnectedMacRandomizationEnabled(); if (mVerboseLoggingEnabled) { final String key = config.getProfileKey(); log("startIpClient netId=" + Integer.toString(mLastNetworkId) + " " + key + " " + " roam=" + mIsAutoRoaming + " static=" + isUsingStaticIp + " randomMac=" + isUsingMacRandomization + " isFilsConnection=" + isFilsConnection); } final MacAddress currentBssid = getCurrentBssidInternalMacAddress(); final String l2Key = mLastL2KeyAndGroupHint != null ? mLastL2KeyAndGroupHint.first : null; final String groupHint = mLastL2KeyAndGroupHint != null ? mLastL2KeyAndGroupHint.second : null; final Layer2Information layer2Info = new Layer2Information(l2Key, groupHint, currentBssid); if (isFilsConnection) { stopIpClient(); if (isUsingStaticIp) { mWifiNative.flushAllHlp(mInterfaceName); return false; } setConfigurationsPriorToIpClientProvisioning(config); final ProvisioningConfiguration.Builder prov = new ProvisioningConfiguration.Builder() .withPreDhcpAction() .withPreconnection() .withApfCapabilities( mWifiNative.getApfCapabilities(mInterfaceName)) .withLayer2Information(layer2Info); if (isUsingMacRandomization) { // Use EUI64 address generation for link-local IPv6 addresses. prov.withRandomMacAddress(); } mIpClient.startProvisioning(prov.build()); } else { sendNetworkChangeBroadcast(DetailedState.OBTAINING_IPADDR); // We must clear the config BSSID, as the wifi chipset may decide to roam // from this point on and having the BSSID specified in the network block would // cause the roam to fail and the device to disconnect. clearTargetBssid("ObtainingIpAddress"); // Stop IpClient in case we're switching from DHCP to static // configuration or vice versa. // // When we transition from static configuration to DHCP in // particular, we must tell ConnectivityService that we're // disconnected, because DHCP might take a long time during which // connectivity APIs such as getActiveNetworkInfo should not return // CONNECTED. stopDhcpSetup(); setConfigurationsPriorToIpClientProvisioning(config); ScanDetailCache scanDetailCache = mWifiConfigManager.getScanDetailCacheForNetwork(config.networkId); ScanResult scanResult = null; if (mLastBssid != null) { if (scanDetailCache != null) { scanResult = scanDetailCache.getScanResult(mLastBssid); } // The cached scan result of connected network would be null at the first // connection, try to check full scan result list again to look up matched // scan result associated to the current BSSID. if (scanResult == null) { scanResult = mScanRequestProxy.getScanResult(mLastBssid); } } final ProvisioningConfiguration.Builder prov; ProvisioningConfiguration.ScanResultInfo scanResultInfo = null; if (scanResult != null) { final List ies = new ArrayList(); for (ScanResult.InformationElement ie : scanResult.getInformationElements()) { ScanResultInfo.InformationElement scanResultInfoIe = new ScanResultInfo.InformationElement(ie.getId(), ie.getBytes()); ies.add(scanResultInfoIe); } scanResultInfo = new ProvisioningConfiguration.ScanResultInfo(scanResult.SSID, scanResult.BSSID, ies); } if (!isUsingStaticIp) { prov = new ProvisioningConfiguration.Builder() .withPreDhcpAction() .withApfCapabilities(mWifiNative.getApfCapabilities(mInterfaceName)) .withNetwork(getCurrentNetwork()) .withDisplayName(config.SSID) .withScanResultInfo(scanResultInfo) .withLayer2Information(layer2Info); } else { StaticIpConfiguration staticIpConfig = config.getStaticIpConfiguration(); prov = new ProvisioningConfiguration.Builder() .withStaticConfiguration(staticIpConfig) .withApfCapabilities(mWifiNative.getApfCapabilities(mInterfaceName)) .withNetwork(getCurrentNetwork()) .withDisplayName(config.SSID) .withLayer2Information(layer2Info); } if (isUsingMacRandomization) { // Use EUI64 address generation for link-local IPv6 addresses. prov.withRandomMacAddress(); } mIpClient.startProvisioning(prov.build()); } return true; } @Override public boolean setWifiConnectedNetworkScorer(IBinder binder, IWifiConnectedNetworkScorer scorer) { return mWifiScoreReport.setWifiConnectedNetworkScorer(binder, scorer); } @Override public void clearWifiConnectedNetworkScorer() { mWifiScoreReport.clearWifiConnectedNetworkScorer(); } @Override public void sendMessageToClientModeImpl(Message msg) { sendMessage(msg); } @Override public long getId() { return mId; } @Override public void dumpWifiScoreReport(FileDescriptor fd, PrintWriter pw, String[] args) { mWifiScoreReport.dump(fd, pw, args); } /** * Notifies changes in data connectivity of the default data SIM. */ @Override public void onCellularConnectivityChanged(@WifiDataStall.CellularDataStatusCode int status) { mWifiConfigManager.onCellularConnectivityChanged(status); // do a scan if no cell data and currently not connect to wifi if (status == WifiDataStall.CELLULAR_DATA_NOT_AVAILABLE && getConnectedWifiConfigurationInternal() == null) { if (mContext.getResources().getBoolean( R.bool.config_wifiScanOnCellularDataLossEnabled)) { mWifiConnectivityManager.forceConnectivityScan(WIFI_WORK_SOURCE); } } } @Override public void setMboCellularDataStatus(boolean available) { mWifiNative.setMboCellularDataStatus(mInterfaceName, available); } @Override public WifiNative.RoamingCapabilities getRoamingCapabilities() { return mWifiNative.getRoamingCapabilities(mInterfaceName); } @Override public boolean configureRoaming(WifiNative.RoamingConfig config) { return mWifiNative.configureRoaming(mInterfaceName, config); } @Override public boolean enableRoaming(boolean enabled) { int status = mWifiNative.enableFirmwareRoaming( mInterfaceName, enabled ? WifiNative.ENABLE_FIRMWARE_ROAMING : WifiNative.DISABLE_FIRMWARE_ROAMING); return status == WifiNative.SET_FIRMWARE_ROAMING_SUCCESS; } @Override public boolean setCountryCode(String countryCode) { return mWifiNative.setStaCountryCode(mInterfaceName, countryCode); } @Override public List getTxPktFates() { return mWifiNative.getTxPktFates(mInterfaceName); } @Override public List getRxPktFates() { return mWifiNative.getRxPktFates(mInterfaceName); } @Override public void setShouldReduceNetworkScore(boolean shouldReduceNetworkScore) { mWifiScoreReport.setShouldReduceNetworkScore(shouldReduceNetworkScore); } private void applyCachedPacketFilter() { // If packet filter is supported on both connections, ignore since we would have already // applied the filter. if (mContext.getResources().getBoolean(R.bool.config_wifiEnableApfOnNonPrimarySta)) return; if (mCachedPacketFilter == null) { Log.w(TAG, "No cached packet filter to apply"); return; } Log.i(TAG, "Applying cached packet filter"); mWifiNative.installPacketFilter(mInterfaceName, mCachedPacketFilter); } /** * Invoked by parent ConcreteClientModeManager whenever a role change occurs. */ public void onRoleChanged() { ClientRole role = mClientModeManager.getRole(); if (role == ROLE_CLIENT_PRIMARY) { applyCachedPacketFilter(); if (mScreenOn) { // Start RSSI polling for the new primary network to enable scoring. enableRssiPolling(true); } } else { if (mScreenOn) { // Stop RSSI polling (if enabled) for the secondary network. enableRssiPolling(false); } } WifiConfiguration connectedNetwork = getConnectedWifiConfiguration(); if (connectedNetwork != null) { updateWifiInfoWhenConnected(connectedNetwork); // Update capabilities after a role change. updateCapabilities(connectedNetwork); } mWifiScoreReport.onRoleChanged(role); } private void addPasspointInfoToLinkProperties(LinkProperties linkProperties) { // CaptivePortalData.Builder.setVenueFriendlyName API not available on R if (!SdkLevel.isAtLeastS()) { return; } WifiConfiguration currentNetwork = getConnectedWifiConfigurationInternal(); if (currentNetwork == null || !currentNetwork.isPasspoint()) { return; } ScanResult scanResult = mScanRequestProxy.getScanResult(mLastBssid); if (scanResult == null) { return; } URL venueUrl = mPasspointManager.getVenueUrl(scanResult); // Update the friendly name to populate the notification CaptivePortalData.Builder captivePortalDataBuilder = new CaptivePortalData.Builder() .setVenueFriendlyName(currentNetwork.providerFriendlyName); // Update the Venue URL if available if (venueUrl != null) { captivePortalDataBuilder.setVenueInfoUrl(Uri.parse(venueUrl.toString()), CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_PASSPOINT); } // Update the T&C URL if available. The network is captive if T&C URL is available if (mTermsAndConditionsUrl != null) { captivePortalDataBuilder.setUserPortalUrl( Uri.parse(mTermsAndConditionsUrl.toString()), CaptivePortalData.CAPTIVE_PORTAL_DATA_SOURCE_PASSPOINT).setCaptive(true); } linkProperties.setCaptivePortalData(captivePortalDataBuilder.build()); } private boolean mHasQuit = false; @Override protected void onQuitting() { mHasQuit = true; mClientModeManager.onClientModeImplQuit(); } /** Returns true if the ClientModeImpl has fully stopped, false otherwise. */ public boolean hasQuit() { return mHasQuit; } /** * WifiVcnNetworkPolicyChangeListener tracks VCN-defined Network policies for a * WifiNetworkAgent. These policies are used to restart Networks or update their * NetworkCapabilities. */ private class WifiVcnNetworkPolicyChangeListener implements VcnManager.VcnNetworkPolicyChangeListener { @Override public void onPolicyChanged() { if (mNetworkAgent == null) { return; } // Update the NetworkAgent's NetworkCapabilities which will merge the current // capabilities with VcnManagementService's underlying Network policy. Log.i(getTag(), "VCN policy changed, updating NetworkCapabilities."); updateCapabilities(); } } /** * Updates the default gateway mac address of the connected network config and updates the * linked networks resulting from the new default gateway. */ private boolean retrieveConnectedNetworkDefaultGateway() { WifiConfiguration currentConfig = getConnectedWifiConfiguration(); if (currentConfig == null) { logi("can't fetch config of current network id " + mLastNetworkId); return false; } // Find IPv4 default gateway. if (mLinkProperties == null) { logi("cannot retrieve default gateway from null link properties"); return false; } String gatewayIPv4 = null; for (RouteInfo routeInfo : mLinkProperties.getRoutes()) { if (routeInfo.isDefaultRoute() && routeInfo.getDestination().getAddress() instanceof Inet4Address && routeInfo.hasGateway()) { gatewayIPv4 = routeInfo.getGateway().getHostAddress(); break; } } if (TextUtils.isEmpty(gatewayIPv4)) { logi("default gateway ipv4 is null"); return false; } String gatewayMac = macAddressFromRoute(gatewayIPv4); if (TextUtils.isEmpty(gatewayMac)) { logi("default gateway mac fetch failed for ipv4 addr = " + gatewayIPv4); return false; } logi("Default Gateway MAC address of " + mLastBssid + " from routes is : " + gatewayMac); if (!mWifiConfigManager.setNetworkDefaultGwMacAddress(mLastNetworkId, gatewayMac)) { logi("default gateway mac set failed for " + currentConfig.getKey() + " network"); return false; } return mWifiConfigManager.saveToStore(true); } /** * Links the supplied config to all matching saved configs and updates the WifiBlocklistMonitor * SSID allowlist with the linked networks. */ private void updateLinkedNetworks(@NonNull WifiConfiguration config) { if (!mContext.getResources().getBoolean(R.bool.config_wifiEnableLinkedNetworkRoaming) || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK)) { return; } mWifiConfigManager.updateLinkedNetworks(config.networkId); Map linkedNetworks = mWifiConfigManager .getLinkedNetworksWithoutMasking(config.networkId); if (!mWifiNative.updateLinkedNetworks(mInterfaceName, config.networkId, linkedNetworks)) { return; } List allowlistSsids = new ArrayList<>(linkedNetworks.values().stream() .map(linkedConfig -> linkedConfig.SSID) .collect(Collectors.toList())); if (linkedNetworks.size() > 0) { allowlistSsids.add(config.SSID); } mWifiBlocklistMonitor.setAllowlistSsids(config.SSID, allowlistSsids); mWifiBlocklistMonitor.updateFirmwareRoamingConfiguration(new ArraySet<>(allowlistSsids)); } private boolean checkAndHandleLinkedNetworkRoaming(String associatedBssid) { if (!mContext.getResources().getBoolean(R.bool.config_wifiEnableLinkedNetworkRoaming)) { return false; } ScanResult scanResult = mScanRequestProxy.getScanResult(associatedBssid); if (scanResult == null) { return false; } WifiConfiguration config = mWifiConfigManager .getSavedNetworkForScanResult(scanResult); if (config == null || !config.allowedKeyManagement.get(WifiConfiguration.KeyMgmt.WPA_PSK) || mLastNetworkId == config.networkId) { return false; } mIsLinkedNetworkRoaming = true; setTargetBssid(config, associatedBssid); mTargetNetworkId = config.networkId; mTargetWifiConfiguration = config; mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; sendNetworkChangeBroadcast(DetailedState.CONNECTING); mWifiInfo.setFrequency(scanResult.frequency); mWifiInfo.setBSSID(associatedBssid); return true; } @RequiresApi(Build.VERSION_CODES.S) private @WifiConfiguration.RecentFailureReason int mboAssocDisallowedReasonCodeToWifiConfigurationRecentFailureReason( @MboOceConstants.MboAssocDisallowedReasonCode int reasonCode) { switch (reasonCode) { case MboOceConstants.MBO_ASSOC_DISALLOWED_REASON_MAX_NUM_STA_ASSOCIATED: return WifiConfiguration.RECENT_FAILURE_MBO_ASSOC_DISALLOWED_MAX_NUM_STA_ASSOCIATED; case MboOceConstants.MBO_ASSOC_DISALLOWED_REASON_AIR_INTERFACE_OVERLOADED: return WifiConfiguration .RECENT_FAILURE_MBO_ASSOC_DISALLOWED_AIR_INTERFACE_OVERLOADED; case MboOceConstants.MBO_ASSOC_DISALLOWED_REASON_AUTH_SERVER_OVERLOADED: return WifiConfiguration.RECENT_FAILURE_MBO_ASSOC_DISALLOWED_AUTH_SERVER_OVERLOADED; case MboOceConstants.MBO_ASSOC_DISALLOWED_REASON_INSUFFICIENT_RSSI: return WifiConfiguration.RECENT_FAILURE_MBO_ASSOC_DISALLOWED_INSUFFICIENT_RSSI; case MboOceConstants.MBO_ASSOC_DISALLOWED_REASON_UNSPECIFIED: case MboOceConstants.MBO_ASSOC_DISALLOWED_REASON_RESERVED_0: case MboOceConstants.MBO_ASSOC_DISALLOWED_REASON_RESERVED: default: return WifiConfiguration.RECENT_FAILURE_MBO_ASSOC_DISALLOWED_UNSPECIFIED; } } /** * To set association rejection status in wifi config. * @param netId The network ID. * @param assocRejectEventInfo Association rejection information. */ private void setAssociationRejectionStatusInConfig(int netId, AssocRejectEventInfo assocRejectEventInfo) { int statusCode = assocRejectEventInfo.statusCode; @WifiConfiguration.RecentFailureReason int reason; switch (statusCode) { case StatusCode.AP_UNABLE_TO_HANDLE_NEW_STA: reason = WifiConfiguration.RECENT_FAILURE_AP_UNABLE_TO_HANDLE_NEW_STA; break; case StatusCode.ASSOC_REJECTED_TEMPORARILY: reason = WifiConfiguration.RECENT_FAILURE_REFUSED_TEMPORARILY; break; case StatusCode.DENIED_POOR_CHANNEL_CONDITIONS: reason = WifiConfiguration.RECENT_FAILURE_POOR_CHANNEL_CONDITIONS; break; default: // do nothing return; } if (SdkLevel.isAtLeastS()) { if (assocRejectEventInfo.mboAssocDisallowedInfo != null) { reason = mboAssocDisallowedReasonCodeToWifiConfigurationRecentFailureReason( assocRejectEventInfo.mboAssocDisallowedInfo.mReasonCode); } else if (assocRejectEventInfo.oceRssiBasedAssocRejectInfo != null) { reason = WifiConfiguration.RECENT_FAILURE_OCE_RSSI_BASED_ASSOCIATION_REJECTION; } } mWifiConfigManager.setRecentFailureAssociationStatus(netId, reason); } }