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android / platform / prebuilts / fullsdk / sources / android-28 / 4d01eeaffaa720e4458a118baa137a11614f00f7 / . / com / android / server / wifi / WifiStateMachine.java
blob: eb3848dc6fe026961fb4b6f7711ea63588bab45e [file] [log] [blame]
/*
* 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.wifi.WifiManager.WIFI_STATE_DISABLED;
import static android.net.wifi.WifiManager.WIFI_STATE_DISABLING;
import static android.net.wifi.WifiManager.WIFI_STATE_ENABLED;
import static android.net.wifi.WifiManager.WIFI_STATE_ENABLING;
import static android.net.wifi.WifiManager.WIFI_STATE_UNKNOWN;
import static android.telephony.TelephonyManager.CALL_STATE_IDLE;
import static android.telephony.TelephonyManager.CALL_STATE_OFFHOOK;
import android.app.ActivityManager;
import android.app.PendingIntent;
import android.bluetooth.BluetoothAdapter;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.database.ContentObserver;
import android.net.ConnectivityManager;
import android.net.DhcpResults;
import android.net.IpConfiguration;
import android.net.KeepalivePacketData;
import android.net.LinkProperties;
import android.net.MacAddress;
import android.net.Network;
import android.net.NetworkAgent;
import android.net.NetworkCapabilities;
import android.net.NetworkFactory;
import android.net.NetworkInfo;
import android.net.NetworkInfo.DetailedState;
import android.net.NetworkMisc;
import android.net.NetworkRequest;
import android.net.NetworkUtils;
import android.net.RouteInfo;
import android.net.StaticIpConfiguration;
import android.net.TrafficStats;
import android.net.dhcp.DhcpClient;
import android.net.ip.IpClient;
import android.net.wifi.RssiPacketCountInfo;
import android.net.wifi.ScanResult;
import android.net.wifi.SupplicantState;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiEnterpriseConfig;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.hotspot2.IProvisioningCallback;
import android.net.wifi.hotspot2.OsuProvider;
import android.net.wifi.hotspot2.PasspointConfiguration;
import android.net.wifi.p2p.IWifiP2pManager;
import android.os.BatteryStats;
import android.os.Bundle;
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.RemoteException;
import android.os.UserHandle;
import android.os.UserManager;
import android.os.WorkSource;
import android.provider.Settings;
import android.system.OsConstants;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.util.Log;
import android.util.Pair;
import android.util.SparseArray;
import com.android.internal.R;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.annotations.VisibleForTesting;
import com.android.internal.app.IBatteryStats;
import com.android.internal.util.AsyncChannel;
import com.android.internal.util.MessageUtils;
import com.android.internal.util.Protocol;
import com.android.internal.util.State;
import com.android.internal.util.StateMachine;
import com.android.server.wifi.WifiNative.InterfaceCallback;
import com.android.server.wifi.WifiNative.StatusListener;
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.nano.WifiMetricsProto;
import com.android.server.wifi.nano.WifiMetricsProto.StaEvent;
import com.android.server.wifi.p2p.WifiP2pServiceImpl;
import com.android.server.wifi.util.NativeUtil;
import com.android.server.wifi.util.TelephonyUtil;
import com.android.server.wifi.util.TelephonyUtil.SimAuthRequestData;
import com.android.server.wifi.util.TelephonyUtil.SimAuthResponseData;
import com.android.server.wifi.util.WifiPermissionsUtil;
import com.android.server.wifi.util.WifiPermissionsWrapper;
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.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
/**
* TODO:
* Deprecate WIFI_STATE_UNKNOWN
*/
/**
* Track the state of Wifi connectivity. All event handling is done here,
* and all changes in connectivity state are initiated here.
*
* Wi-Fi now supports three modes of operation: Client, SoftAp and p2p
* In the current implementation, we support concurrent wifi p2p and wifi operation.
* The WifiStateMachine handles SoftAp and Client operations while WifiP2pService
* handles p2p operation.
*
* @hide
*/
public class WifiStateMachine extends StateMachine {
private static final String NETWORKTYPE = "WIFI";
private static final String NETWORKTYPE_UNTRUSTED = "WIFI_UT";
@VisibleForTesting public static final short NUM_LOG_RECS_NORMAL = 100;
@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 = "WifiStateMachine";
private static final int ONE_HOUR_MILLI = 1000 * 60 * 60;
private static final String GOOGLE_OUI = "DA-A1-19";
private static final String EXTRA_OSU_ICON_QUERY_BSSID = "BSSID";
private static final String EXTRA_OSU_ICON_QUERY_FILENAME = "FILENAME";
private static final String EXTRA_OSU_PROVIDER = "OsuProvider";
private boolean mVerboseLoggingEnabled = false;
private final WifiPermissionsWrapper mWifiPermissionsWrapper;
/* debug flag, indicating if handling of ASSOCIATION_REJECT ended up blacklisting
* the corresponding BSSID.
*/
private boolean didBlackListBSSID = false;
/**
* Log with error attribute
*
* @param s is string log
*/
@Override
protected void loge(String s) {
Log.e(getName(), s);
}
@Override
protected void logd(String s) {
Log.d(getName(), s);
}
@Override
protected void log(String s) {
Log.d(getName(), s);
}
private WifiMetrics mWifiMetrics;
private WifiInjector mWifiInjector;
private WifiMonitor mWifiMonitor;
private WifiNative mWifiNative;
private WifiPermissionsUtil mWifiPermissionsUtil;
private WifiConfigManager mWifiConfigManager;
private WifiConnectivityManager mWifiConnectivityManager;
private ConnectivityManager mCm;
private BaseWifiDiagnostics mWifiDiagnostics;
private ScanRequestProxy mScanRequestProxy;
private WifiApConfigStore mWifiApConfigStore;
private final boolean mP2pSupported;
private final AtomicBoolean mP2pConnected = new AtomicBoolean(false);
private boolean mTemporarilyDisconnectWifi = false;
private final Clock mClock;
private final PropertyService mPropertyService;
private final BuildProperties mBuildProperties;
private final WifiCountryCode mCountryCode;
// Object holding most recent wifi score report and bad Linkspeed count
private final WifiScoreReport mWifiScoreReport;
public WifiScoreReport getWifiScoreReport() {
return mWifiScoreReport;
}
private final PasspointManager mPasspointManager;
private final McastLockManagerFilterController mMcastLockManagerFilterController;
private boolean mScreenOn = false;
private String mInterfaceName;
private int mLastSignalLevel = -1;
private String mLastBssid;
private int mLastNetworkId; // The network Id we successfully joined
private final StatusListener mWifiNativeStatusListener = (boolean isReady) -> {
if (!isReady) {
sendMessage(CMD_WIFINATIVE_FAILURE);
}
};
private final InterfaceCallback mWifiNativeInterfaceCallback = new InterfaceCallback() {
@Override
public void onDestroyed(String ifaceName) {
sendMessage(CMD_INTERFACE_DESTROYED);
}
@Override
public void onUp(String ifaceName) {
}
@Override
public void onDown(String ifaceName) {
}
};
private boolean mIpReachabilityDisconnectEnabled = true;
private WifiManager.SoftApCallback mSoftApCallback;
/**
* Called from WifiServiceImpl to register a callback for notifications from SoftApManager
*/
public void registerSoftApCallback(WifiManager.SoftApCallback callback) {
mSoftApCallback = callback;
}
private void processRssiThreshold(byte curRssi, int reason,
WifiNative.WifiRssiEventHandler rssiHandler) {
if (curRssi == Byte.MAX_VALUE || curRssi == Byte.MIN_VALUE) {
Log.wtf(TAG, "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(TAG, "Re-program RSSI thresholds for " + smToString(reason) +
": [" + minRssi + ", " + maxRssi + "], curRssi=" + curRssi + " ret=" + ret);
break;
}
}
}
// Testing various network disconnect cases by sending lots of spurious
// disconnect to supplicant
private boolean testNetworkDisconnect = false;
private boolean mEnableRssiPolling = false;
// Accessed via Binder thread ({get,set}PollRssiIntervalMsecs), and WifiStateMachine thread.
private volatile int mPollRssiIntervalMsecs = DEFAULT_POLL_RSSI_INTERVAL_MSECS;
private int mRssiPollToken = 0;
/* 3 operational states for STA operation: CONNECT_MODE, SCAN_ONLY_MODE, SCAN_ONLY_WIFI_OFF_MODE
* In CONNECT_MODE, the STA can scan and connect to an access point
* In SCAN_ONLY_MODE, the STA can only scan for access points
* In SCAN_ONLY_WIFI_OFF_MODE, the STA can only scan for access points with wifi toggle being off
*/
private int mOperationalMode = DISABLED_MODE;
// variable indicating we are expecting a mode switch - do not attempt recovery for failures
private boolean mModeChange = false;
private boolean mBluetoothConnectionActive = false;
private PowerManager.WakeLock mSuspendWakeLock;
/**
* Interval in milliseconds between polling for RSSI
* and linkspeed information
*/
private static final int DEFAULT_POLL_RSSI_INTERVAL_MSECS = 3000;
/**
* Interval in milliseconds between receiving a disconnect event
* while connected to a good AP, and handling the disconnect proper
*/
private static final int LINK_FLAPPING_DEBOUNCE_MSEC = 4000;
/**
* Delay between supplicant restarts upon failure to establish connection
*/
private static final int SUPPLICANT_RESTART_INTERVAL_MSECS = 5000;
/**
* Number of times we attempt to restart supplicant
*/
private static final int SUPPLICANT_RESTART_TRIES = 5;
/**
* 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";
private int mSupplicantRestartCount = 0;
/**
* The link properties of the wifi interface.
* Do not modify this directly; use updateLinkProperties instead.
*/
private LinkProperties mLinkProperties;
/* Tracks sequence number on a periodic scan message */
private int mPeriodicScanToken = 0;
// Wakelock held during wifi start/stop and driver load/unload
private PowerManager.WakeLock mWakeLock;
private Context mContext;
private final Object mDhcpResultsLock = new Object();
private DhcpResults mDhcpResults;
// NOTE: Do not return to clients - see syncRequestConnectionInfo()
private final ExtendedWifiInfo mWifiInfo;
private NetworkInfo mNetworkInfo;
private final NetworkCapabilities mDfltNetworkCapabilities;
private SupplicantStateTracker mSupplicantStateTracker;
private int mWifiLinkLayerStatsSupported = 4; // Temporary disable
// 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;
// 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 mTargetRoamBSSID = SUPPLICANT_BSSID_ANY;
// This one is used to track whta is 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
private int mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID;
private long mLastDriverRoamAttempt = 0;
private WifiConfiguration targetWificonfiguration = null;
int getPollRssiIntervalMsecs() {
return mPollRssiIntervalMsecs;
}
void setPollRssiIntervalMsecs(int newPollIntervalMsecs) {
mPollRssiIntervalMsecs = newPollIntervalMsecs;
}
/**
* Method to clear {@link #mTargetRoamBSSID} and reset the 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(TAG, "force BSSID to " + bssid + "due to config");
}
}
if (mVerboseLoggingEnabled) {
logd(dbg + " clearTargetBssid " + bssid + " key=" + config.configKey());
}
mTargetRoamBSSID = bssid;
return mWifiNative.setConfiguredNetworkBSSID(mInterfaceName, bssid);
}
/**
* Set Config's default BSSID (for association purpose) and {@link #mTargetRoamBSSID}
* @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(TAG, "force BSSID to " + bssid + "due to config");
}
}
if (mVerboseLoggingEnabled) {
Log.d(TAG, "setTargetBssid set to " + bssid + " key=" + config.configKey());
}
mTargetRoamBSSID = bssid;
config.getNetworkSelectionStatus().setNetworkSelectionBSSID(bssid);
return true;
}
private IpClient mIpClient;
// Channel for sending replies.
private AsyncChannel mReplyChannel = new AsyncChannel();
// Used to initiate a connection with WifiP2pService
private AsyncChannel mWifiP2pChannel;
@GuardedBy("mWifiReqCountLock")
private int mConnectionReqCount = 0;
private WifiNetworkFactory mNetworkFactory;
@GuardedBy("mWifiReqCountLock")
private int mUntrustedReqCount = 0;
private UntrustedWifiNetworkFactory mUntrustedNetworkFactory;
private WifiNetworkAgent mNetworkAgent;
private final Object mWifiReqCountLock = new Object();
private byte[] mRssiRanges;
// Used to filter out requests we couldn't possibly satisfy.
private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities();
// Provide packet filter capabilities to ConnectivityService.
private final NetworkMisc mNetworkMisc = new NetworkMisc();
/* The base for wifi message types */
static final int BASE = Protocol.BASE_WIFI;
/* Start the STA interface */
static final int CMD_START_SUPPLICANT = BASE + 11;
/* Stop the STA interface */
static final int CMD_STOP_SUPPLICANT = BASE + 12;
/* STA interface destroyed */
static final int CMD_INTERFACE_DESTROYED = BASE + 13;
/* Indicates Static IP succeeded */
static final int CMD_STATIC_IP_SUCCESS = BASE + 15;
/* Indicates Static IP failed */
static final int CMD_STATIC_IP_FAILURE = BASE + 16;
/* A delayed message sent to start driver when it fail to come up */
static final int CMD_DRIVER_START_TIMED_OUT = BASE + 19;
/* Start the soft access point */
static final int CMD_START_AP = BASE + 21;
/* Indicates soft ap start failed */
static final int CMD_START_AP_FAILURE = BASE + 22;
/* Stop the soft access point */
static final int CMD_STOP_AP = BASE + 23;
/* Soft access point teardown is completed. */
static final int CMD_AP_STOPPED = BASE + 24;
static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31;
/* Supplicant commands */
/* Add/update a network configuration */
static final int CMD_ADD_OR_UPDATE_NETWORK = BASE + 52;
/* Delete a network */
static final int CMD_REMOVE_NETWORK = BASE + 53;
/* Enable a network. The device will attempt a connection to the given network. */
static final int CMD_ENABLE_NETWORK = BASE + 54;
/* Get configured networks */
static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59;
/* Get adaptors */
static final int CMD_GET_SUPPORTED_FEATURES = BASE + 61;
/* Get configured networks with real preSharedKey */
static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62;
/* Get Link Layer Stats thru HAL */
static final int CMD_GET_LINK_LAYER_STATS = BASE + 63;
/* Supplicant commands after driver start*/
/* Set operational mode. CONNECT, SCAN ONLY, SCAN_ONLY with Wi-Fi off mode */
static final int CMD_SET_OPERATIONAL_MODE = BASE + 72;
/* 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;
/* Controls suspend mode optimizations
*
* When high perf mode is enabled, suspend mode optimizations are disabled
*
* When high perf mode is disabled, suspend mode optimizations are enabled
*
* Suspend mode optimizations include:
* - packet filtering
* - turn off roaming
* - DTIM wake up settings
*/
static final int CMD_SET_HIGH_PERF_MODE = BASE + 77;
/* Enables RSSI poll */
static final int CMD_ENABLE_RSSI_POLL = BASE + 82;
/* RSSI poll */
static final int CMD_RSSI_POLL = BASE + 83;
/* Enable suspend mode optimizations in the driver */
static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86;
/* Test network Disconnection NETWORK_DISCONNECT */
static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89;
private int testNetworkDisconnectCounter = 0;
/* Enable TDLS on a specific MAC address */
static final int CMD_ENABLE_TDLS = BASE + 92;
/**
* Watchdog for protecting against b/16823537
* Leave time for 4-way handshake to succeed
*/
static final int ROAM_GUARD_TIMER_MSEC = 15000;
int roamWatchdogCount = 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_DISCONNECTING_WATCHDOG_TIMER = BASE + 96;
/* Remove a packages associated configrations */
static final int CMD_REMOVE_APP_CONFIGURATIONS = BASE + 97;
/* Disable an ephemeral network */
static final int CMD_DISABLE_EPHEMERAL_NETWORK = BASE + 98;
/* Get matching network */
static final int CMD_GET_MATCHING_CONFIG = BASE + 99;
/* alert from firmware */
static final int CMD_FIRMWARE_ALERT = BASE + 100;
/* SIM is removed; reset any cached data for it */
static final int CMD_RESET_SIM_NETWORKS = BASE + 101;
/* OSU APIs */
static final int CMD_QUERY_OSU_ICON = BASE + 104;
/* try to match a provider with current network */
static final int CMD_MATCH_PROVIDER_NETWORK = BASE + 105;
// Add or update a Passpoint configuration.
static final int CMD_ADD_OR_UPDATE_PASSPOINT_CONFIG = BASE + 106;
// Remove a Passpoint configuration.
static final int CMD_REMOVE_PASSPOINT_CONFIG = BASE + 107;
// Get the list of installed Passpoint configurations.
static final int CMD_GET_PASSPOINT_CONFIGS = BASE + 108;
// Get the list of OSU providers associated with a Passpoint network.
static final int CMD_GET_MATCHING_OSU_PROVIDERS = BASE + 109;
/* Commands from/to the SupplicantStateTracker */
/* Reset the supplicant state tracker */
static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111;
int disconnectingWatchdogCount = 0;
static final int DISCONNECTING_GUARD_TIMER_MSEC = 5000;
/* Disable p2p watchdog */
static final int CMD_DISABLE_P2P_WATCHDOG_TIMER = BASE + 112;
int mDisableP2pWatchdogCount = 0;
static final int DISABLE_P2P_GUARD_TIMER_MSEC = 2000;
/* P2p commands */
/* We are ok with no response here since we wont do much with it anyway */
public static final int CMD_ENABLE_P2P = BASE + 131;
/* In order to shut down supplicant cleanly, we wait till p2p has
* been disabled */
public static final int CMD_DISABLE_P2P_REQ = BASE + 132;
public static final int CMD_DISABLE_P2P_RSP = BASE + 133;
/**
* Indicates the end of boot process, should be used to trigger load from config store,
* initiate connection attempt, etc.
* */
static final int CMD_BOOT_COMPLETED = BASE + 134;
/**
* Initialize the WifiStateMachine. This is currently used to initialize the
* {@link HalDeviceManager} module.
*/
static final int CMD_INITIALIZE = BASE + 135;
/* 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;
/* Supplicant is trying to associate to a given BSSID */
static final int CMD_TARGET_BSSID = BASE + 141;
/* Reload all networks and reconnect */
static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142;
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_ASSOCIATED_BSSID = BASE + 147;
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;
/* Remove a packages associated configrations */
static final int CMD_REMOVE_USER_CONFIGURATIONS = BASE + 152;
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;
/* Enable/Disable WifiConnectivityManager */
static final int CMD_ENABLE_WIFI_CONNECTIVITY_MANAGER = BASE + 166;
/* Get all matching Passpoint configurations */
static final int CMD_GET_ALL_MATCHING_CONFIGS = BASE + 168;
/**
* Used to handle messages bounced between WifiStateMachine 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;
/* used to indicate that the foreground user was switched */
static final int CMD_USER_SWITCH = BASE + 205;
/* used to indicate that the foreground user was switched */
static final int CMD_USER_UNLOCK = BASE + 206;
/* used to indicate that the foreground user was switched */
static final int CMD_USER_STOP = BASE + 207;
/* Signals that one of the native daemons is dead. */
private static final int CMD_WIFINATIVE_FAILURE = BASE + 250;
/* Indicates that diagnostics should time out a connection start event. */
private static final int CMD_DIAGS_CONNECT_TIMEOUT = BASE + 252;
/* Used to set the tx power limit for SAR during the start of a phone call. */
private static final int CMD_SELECT_TX_POWER_SCENARIO = BASE + 253;
// Start subscription provisioning with a given provider
private static final int CMD_START_SUBSCRIPTION_PROVISIONING = BASE + 254;
// For message logging.
private static final Class[] sMessageClasses = {
AsyncChannel.class, WifiStateMachine.class, DhcpClient.class };
private static final SparseArray<String> sSmToString =
MessageUtils.findMessageNames(sMessageClasses);
/* Wifi state machine modes of operation */
/* CONNECT_MODE - connect to any 'known' AP when it becomes available */
public static final int CONNECT_MODE = 1;
/* SCAN_ONLY_MODE - don't connect to any APs; scan, but only while apps hold lock */
public static final int SCAN_ONLY_MODE = 2;
/* SCAN_ONLY_WITH_WIFI_OFF - scan, but don't connect to any APs */
public static final int SCAN_ONLY_WITH_WIFI_OFF_MODE = 3;
/* DISABLED_MODE - Don't connect, don't scan, don't be an AP */
public static final int DISABLED_MODE = 4;
private static final int SUCCESS = 1;
private static final int FAILURE = -1;
/* 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;
/**
* Time window in milliseconds for which we send
* {@link NetworkAgent#explicitlySelected(boolean)}
* after connecting to the network which the user last selected.
*/
@VisibleForTesting
public static final int LAST_SELECTED_NETWORK_EXPIRATION_AGE_MILLIS = 30 * 1000;
/* Tracks if user has enabled suspend optimizations through settings */
private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true);
/* Tracks if user has enabled Connected Mac Randomization through settings */
private AtomicBoolean mEnableConnectedMacRandomization = new AtomicBoolean(false);
/**
* Supplicant scan interval in milliseconds.
* Comes from {@link Settings.Global#WIFI_SUPPLICANT_SCAN_INTERVAL_MS} or
* from the default config if the setting is not set
*/
private long mSupplicantScanIntervalMs;
private final int mThresholdQualifiedRssi24;
private final int mThresholdQualifiedRssi5;
private final int mThresholdSaturatedRssi24;
private final int mThresholdSaturatedRssi5;
private final int mThresholdMinimumRssi5;
private final int mThresholdMinimumRssi24;
private final boolean mEnableChipWakeUpWhenAssociated;
private final boolean mEnableRssiPollWhenAssociated;
private final boolean mEnableVoiceCallSarTxPowerLimit;
int mRunningBeaconCount = 0;
/* Default parent state */
private State mDefaultState = new DefaultState();
/* Temporary initial state */
private State mInitialState = new InitialState();
/* Driver loaded, waiting for supplicant to start */
private State mSupplicantStartingState = new SupplicantStartingState();
/* Driver loaded and supplicant ready */
private State mSupplicantStartedState = new SupplicantStartedState();
/* Scan for networks, no connection will be established */
private State mScanModeState = new ScanModeState();
/* Connecting to an access point */
private State mConnectModeState = new ConnectModeState();
/* Connected at 802.11 (L2) level */
private State mL2ConnectedState = new L2ConnectedState();
/* fetching IP after connection to access point (assoc+auth complete) */
private State mObtainingIpState = new ObtainingIpState();
/* Connected with IP addr */
private State mConnectedState = new ConnectedState();
/* Roaming */
private State mRoamingState = new RoamingState();
/* disconnect issued, waiting for network disconnect confirmation */
private State mDisconnectingState = new DisconnectingState();
/* Network is not connected, supplicant assoc+auth is not complete */
private State mDisconnectedState = new DisconnectedState();
/* Soft ap state */
private State mSoftApState = new SoftApState();
/**
* One of {@link WifiManager#WIFI_STATE_DISABLED},
* {@link WifiManager#WIFI_STATE_DISABLING},
* {@link WifiManager#WIFI_STATE_ENABLED},
* {@link WifiManager#WIFI_STATE_ENABLING},
* {@link WifiManager#WIFI_STATE_UNKNOWN}
*/
private final AtomicInteger mWifiState = new AtomicInteger(WIFI_STATE_DISABLED);
/**
* Work source to use to blame usage on the WiFi service
*/
public static final WorkSource WIFI_WORK_SOURCE = new WorkSource(Process.WIFI_UID);
/**
* Keep track of whether WIFI is running.
*/
private boolean mIsRunning = false;
/**
* Keep track of whether we last told the battery stats we had started.
*/
private boolean mReportedRunning = false;
/**
* Most recently set source of starting WIFI.
*/
private final WorkSource mRunningWifiUids = new WorkSource();
/**
* The last reported UIDs that were responsible for starting WIFI.
*/
private final WorkSource mLastRunningWifiUids = new WorkSource();
private TelephonyManager mTelephonyManager;
private TelephonyManager getTelephonyManager() {
if (mTelephonyManager == null) {
mTelephonyManager = mWifiInjector.makeTelephonyManager();
}
return mTelephonyManager;
}
private final WifiPhoneStateListener mPhoneStateListener;
private final IBatteryStats mBatteryStats;
private final String mTcpBufferSizes;
// Used for debug and stats gathering
private static int sScanAlarmIntentCount = 0;
private FrameworkFacade mFacade;
private WifiStateTracker mWifiStateTracker;
private final BackupManagerProxy mBackupManagerProxy;
private final WrongPasswordNotifier mWrongPasswordNotifier;
public WifiStateMachine(Context context, FrameworkFacade facade, Looper looper,
UserManager userManager, WifiInjector wifiInjector,
BackupManagerProxy backupManagerProxy, WifiCountryCode countryCode,
WifiNative wifiNative,
WrongPasswordNotifier wrongPasswordNotifier) {
super("WifiStateMachine", looper);
mWifiInjector = wifiInjector;
mWifiMetrics = mWifiInjector.getWifiMetrics();
mClock = wifiInjector.getClock();
mPropertyService = wifiInjector.getPropertyService();
mBuildProperties = wifiInjector.getBuildProperties();
mContext = context;
mFacade = facade;
mWifiNative = wifiNative;
mBackupManagerProxy = backupManagerProxy;
mWrongPasswordNotifier = wrongPasswordNotifier;
// TODO refactor WifiNative use of context out into it's own class
mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, "");
mBatteryStats = IBatteryStats.Stub.asInterface(mFacade.getService(
BatteryStats.SERVICE_NAME));
mWifiStateTracker = wifiInjector.getWifiStateTracker();
IBinder b = mFacade.getService(Context.NETWORKMANAGEMENT_SERVICE);
mP2pSupported = mContext.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_WIFI_DIRECT);
mWifiPermissionsUtil = mWifiInjector.getWifiPermissionsUtil();
mWifiConfigManager = mWifiInjector.getWifiConfigManager();
mPasspointManager = mWifiInjector.getPasspointManager();
mWifiMonitor = mWifiInjector.getWifiMonitor();
mWifiDiagnostics = mWifiInjector.makeWifiDiagnostics(mWifiNative);
mScanRequestProxy = mWifiInjector.getScanRequestProxy();
mWifiPermissionsWrapper = mWifiInjector.getWifiPermissionsWrapper();
mWifiInfo = new ExtendedWifiInfo();
mSupplicantStateTracker =
mFacade.makeSupplicantStateTracker(context, mWifiConfigManager, getHandler());
mLinkProperties = new LinkProperties();
mPhoneStateListener = new WifiPhoneStateListener(looper);
mMcastLockManagerFilterController = new McastLockManagerFilterController();
mNetworkInfo.setIsAvailable(false);
mLastBssid = null;
mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID;
mLastSignalLevel = -1;
mCountryCode = countryCode;
mWifiScoreReport = new WifiScoreReport(mWifiInjector.getScoringParams(), mClock);
mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING);
mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED);
mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED);
mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024);
mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024);
// TODO - needs to be a bit more dynamic
mDfltNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter);
IntentFilter filter = new IntentFilter();
filter.addAction(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
mContext.registerReceiver(
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);
}
}
}, filter);
mFacade.registerContentObserver(mContext, Settings.Global.getUriFor(
Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false,
new ContentObserver(getHandler()) {
@Override
public void onChange(boolean selfChange) {
mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext,
Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1);
}
});
mFacade.registerContentObserver(mContext, Settings.Global.getUriFor(
Settings.Global.WIFI_CONNECTED_MAC_RANDOMIZATION_ENABLED), false,
new ContentObserver(getHandler()) {
@Override
public void onChange(boolean selfChange) {
updateConnectedMacRandomizationSetting();
}
});
mContext.registerReceiver(
new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
sendMessage(CMD_BOOT_COMPLETED);
}
},
new IntentFilter(Intent.ACTION_LOCKED_BOOT_COMPLETED));
mUserWantsSuspendOpt.set(mFacade.getIntegerSetting(mContext,
Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1);
updateConnectedMacRandomizationSetting();
PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getName());
mSuspendWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WifiSuspend");
mSuspendWakeLock.setReferenceCounted(false);
mTcpBufferSizes = mContext.getResources().getString(
com.android.internal.R.string.config_wifi_tcp_buffers);
// Load Device configs
mThresholdQualifiedRssi24 = context.getResources().getInteger(
R.integer.config_wifi_framework_wifi_score_low_rssi_threshold_24GHz);
mThresholdQualifiedRssi5 = context.getResources().getInteger(
R.integer.config_wifi_framework_wifi_score_low_rssi_threshold_5GHz);
mThresholdSaturatedRssi24 = context.getResources().getInteger(
R.integer.config_wifi_framework_wifi_score_good_rssi_threshold_24GHz);
mThresholdSaturatedRssi5 = context.getResources().getInteger(
R.integer.config_wifi_framework_wifi_score_good_rssi_threshold_5GHz);
mThresholdMinimumRssi5 = context.getResources().getInteger(
R.integer.config_wifi_framework_wifi_score_bad_rssi_threshold_5GHz);
mThresholdMinimumRssi24 = context.getResources().getInteger(
R.integer.config_wifi_framework_wifi_score_bad_rssi_threshold_24GHz);
mEnableVoiceCallSarTxPowerLimit = mContext.getResources().getBoolean(
R.bool.config_wifi_framework_enable_voice_call_sar_tx_power_limit);
mEnableChipWakeUpWhenAssociated = true;
mEnableRssiPollWhenAssociated = true;
// CHECKSTYLE:OFF IndentationCheck
addState(mDefaultState);
addState(mInitialState, mDefaultState);
addState(mSupplicantStartingState, mInitialState);
addState(mSupplicantStartedState, mInitialState);
addState(mConnectModeState, mSupplicantStartedState);
addState(mL2ConnectedState, mConnectModeState);
addState(mObtainingIpState, mL2ConnectedState);
addState(mConnectedState, mL2ConnectedState);
addState(mRoamingState, mL2ConnectedState);
addState(mDisconnectingState, mConnectModeState);
addState(mDisconnectedState, mConnectModeState);
addState(mScanModeState, mDefaultState);
addState(mSoftApState, mDefaultState);
// CHECKSTYLE:ON IndentationCheck
setInitialState(mDefaultState);
setLogRecSize(NUM_LOG_RECS_NORMAL);
setLogOnlyTransitions(false);
//start the state machine
start();
// Learn the initial state of whether the screen is on.
// We update this field when we receive broadcasts from the system.
handleScreenStateChanged(powerManager.isInteractive());
final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, WIFI_STATE_DISABLED);
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
sendWifiScanAvailable(false);
}
private void registerForWifiMonitorEvents() {
mWifiMonitor.registerHandler(mInterfaceName, CMD_TARGET_BSSID, getHandler());
mWifiMonitor.registerHandler(mInterfaceName, CMD_ASSOCIATED_BSSID, getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ANQP_DONE_EVENT, getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ASSOCIATION_REJECTION_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.AUTHENTICATION_FAILURE_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_DONE_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.GAS_QUERY_START_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.HS20_REMEDIATION_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_CONNECTION_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_DISCONNECTION_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.RX_HS20_ANQP_ICON_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_CONNECTION_EVENT, getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_DISCONNECTION_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_IDENTITY,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUP_REQUEST_SIM_AUTH,
getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.ASSOCIATION_REJECTION_EVENT,
mWifiMetrics.getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.AUTHENTICATION_FAILURE_EVENT,
mWifiMetrics.getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_CONNECTION_EVENT,
mWifiMetrics.getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.NETWORK_DISCONNECTION_EVENT,
mWifiMetrics.getHandler());
mWifiMonitor.registerHandler(mInterfaceName, WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT,
mWifiMetrics.getHandler());
mWifiMonitor.registerHandler(mInterfaceName, CMD_ASSOCIATED_BSSID,
mWifiMetrics.getHandler());
mWifiMonitor.registerHandler(mInterfaceName, CMD_TARGET_BSSID,
mWifiMetrics.getHandler());
}
/**
* Class to implement the MulticastLockManager.FilterController callback.
*/
class McastLockManagerFilterController implements WifiMulticastLockManager.FilterController {
/**
* Start filtering Multicast v4 packets
*/
public void startFilteringMulticastPackets() {
if (mIpClient != null) {
mIpClient.setMulticastFilter(true);
}
}
/**
* Stop filtering Multicast v4 packets
*/
public void stopFilteringMulticastPackets() {
if (mIpClient != null) {
mIpClient.setMulticastFilter(false);
}
}
}
class IpClientCallback extends IpClient.Callback {
@Override
public void onPreDhcpAction() {
sendMessage(DhcpClient.CMD_PRE_DHCP_ACTION);
}
@Override
public void onPostDhcpAction() {
sendMessage(DhcpClient.CMD_POST_DHCP_ACTION);
}
@Override
public void onNewDhcpResults(DhcpResults dhcpResults) {
if (dhcpResults != null) {
sendMessage(CMD_IPV4_PROVISIONING_SUCCESS, dhcpResults);
} else {
sendMessage(CMD_IPV4_PROVISIONING_FAILURE);
mWifiInjector.getWifiLastResortWatchdog().noteConnectionFailureAndTriggerIfNeeded(
getTargetSsid(), mTargetRoamBSSID,
WifiLastResortWatchdog.FAILURE_CODE_DHCP);
}
}
@Override
public void onProvisioningSuccess(LinkProperties newLp) {
mWifiMetrics.logStaEvent(StaEvent.TYPE_CMD_IP_CONFIGURATION_SUCCESSFUL);
sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp);
sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL);
}
@Override
public void onProvisioningFailure(LinkProperties newLp) {
mWifiMetrics.logStaEvent(StaEvent.TYPE_CMD_IP_CONFIGURATION_LOST);
sendMessage(CMD_IP_CONFIGURATION_LOST);
}
@Override
public void onLinkPropertiesChange(LinkProperties newLp) {
sendMessage(CMD_UPDATE_LINKPROPERTIES, newLp);
}
@Override
public void onReachabilityLost(String logMsg) {
mWifiMetrics.logStaEvent(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 setFallbackMulticastFilter(boolean enabled) {
sendMessage(CMD_SET_FALLBACK_PACKET_FILTERING, enabled);
}
@Override
public void setNeighborDiscoveryOffload(boolean enabled) {
sendMessage(CMD_CONFIG_ND_OFFLOAD, (enabled ? 1 : 0));
}
}
private void stopIpClient() {
/* Restore power save and suspend optimizations */
handlePostDhcpSetup();
mIpClient.stop();
}
PendingIntent getPrivateBroadcast(String action, int requestCode) {
Intent intent = new Intent(action, null);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
intent.setPackage("android");
return mFacade.getBroadcast(mContext, requestCode, intent, 0);
}
/**
* Set wpa_supplicant log level using |mVerboseLoggingLevel| flag.
*/
void setSupplicantLogLevel() {
mWifiNative.setSupplicantLogLevel(mVerboseLoggingEnabled);
}
/**
* Method to update logging level in wifi service related classes.
*
* @param verbose int logging level to use
*/
public void enableVerboseLogging(int verbose) {
if (verbose > 0) {
mVerboseLoggingEnabled = true;
setLogRecSize(ActivityManager.isLowRamDeviceStatic()
? NUM_LOG_RECS_VERBOSE_LOW_MEMORY : NUM_LOG_RECS_VERBOSE);
} else {
mVerboseLoggingEnabled = false;
setLogRecSize(NUM_LOG_RECS_NORMAL);
}
configureVerboseHalLogging(mVerboseLoggingEnabled);
setSupplicantLogLevel();
mCountryCode.enableVerboseLogging(verbose);
mWifiScoreReport.enableVerboseLogging(mVerboseLoggingEnabled);
mWifiDiagnostics.startLogging(mVerboseLoggingEnabled);
mWifiMonitor.enableVerboseLogging(verbose);
mWifiNative.enableVerboseLogging(verbose);
mWifiConfigManager.enableVerboseLogging(verbose);
mSupplicantStateTracker.enableVerboseLogging(verbose);
mPasspointManager.enableVerboseLogging(verbose);
}
private static final String SYSTEM_PROPERTY_LOG_CONTROL_WIFIHAL = "log.tag.WifiHAL";
private static final String LOGD_LEVEL_DEBUG = "D";
private static final String LOGD_LEVEL_VERBOSE = "V";
private void configureVerboseHalLogging(boolean enableVerbose) {
if (mBuildProperties.isUserBuild()) { // Verbose HAL logging not supported on user builds.
return;
}
mPropertyService.set(SYSTEM_PROPERTY_LOG_CONTROL_WIFIHAL,
enableVerbose ? LOGD_LEVEL_VERBOSE : LOGD_LEVEL_DEBUG);
}
public void clearANQPCache() {
// TODO(b/31065385)
// mWifiConfigManager.trimANQPCache(true);
}
private boolean setRandomMacOui() {
String oui = mContext.getResources().getString(R.string.config_wifi_random_mac_oui);
if (TextUtils.isEmpty(oui)) {
oui = GOOGLE_OUI;
}
String[] ouiParts = oui.split("-");
byte[] ouiBytes = new byte[3];
ouiBytes[0] = (byte) (Integer.parseInt(ouiParts[0], 16) & 0xFF);
ouiBytes[1] = (byte) (Integer.parseInt(ouiParts[1], 16) & 0xFF);
ouiBytes[2] = (byte) (Integer.parseInt(ouiParts[2], 16) & 0xFF);
logd("Setting OUI to " + oui);
return mWifiNative.setScanningMacOui(mInterfaceName, ouiBytes);
}
/**
* 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 boolean connectToUserSelectNetwork(int netId, int uid, boolean forceReconnect) {
logd("connectToUserSelectNetwork netId " + netId + ", uid " + uid
+ ", forceReconnect = " + forceReconnect);
if (mWifiConfigManager.getConfiguredNetwork(netId) == null) {
loge("connectToUserSelectNetwork Invalid network Id=" + netId);
return false;
}
if (!mWifiConfigManager.enableNetwork(netId, true, uid)
|| !mWifiConfigManager.updateLastConnectUid(netId, uid)) {
logi("connectToUserSelectNetwork Allowing uid " + uid
+ " with insufficient permissions to connect=" + netId);
} else {
// Note user connect choice here, so that it will be considered in the next network
// selection.
mWifiConnectivityManager.setUserConnectChoice(netId);
}
if (!forceReconnect && mWifiInfo.getNetworkId() == netId) {
// We're already 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);
startConnectToNetwork(netId, uid, SUPPLICANT_BSSID_ANY);
}
return true;
}
/**
* ******************************************************
* Methods exposed for public use
* ******************************************************
*/
public Messenger getMessenger() {
return new Messenger(getHandler());
}
private long mDisconnectedTimeStamp = 0;
public long getDisconnectedTimeMilli() {
if (getCurrentState() == mDisconnectedState
&& mDisconnectedTimeStamp != 0) {
long now_ms = mClock.getWallClockMillis();
return now_ms - mDisconnectedTimeStamp;
}
return 0;
}
// Last connect attempt is used to prevent scan requests:
// - for a period of 10 seconds after attempting to connect
private long lastConnectAttemptTimestamp = 0;
private Set<Integer> lastScanFreqs = null;
// 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 messageHandlingStatus = 0;
//TODO: this is used only to track connection attempts, however the link state and packet per
//TODO: second logic should be folded into that
private boolean checkOrDeferScanAllowed(Message msg) {
long now = mClock.getWallClockMillis();
if (lastConnectAttemptTimestamp != 0 && (now - lastConnectAttemptTimestamp) < 10000) {
Message dmsg = Message.obtain(msg);
sendMessageDelayed(dmsg, 11000 - (now - lastConnectAttemptTimestamp));
return false;
}
return true;
}
private int mOnTime = 0;
private int mTxTime = 0;
private int mRxTime = 0;
private int mOnTimeScreenStateChange = 0;
private long lastOntimeReportTimeStamp = 0;
private long lastScreenStateChangeTimeStamp = 0;
private int mOnTimeLastReport = 0;
private int mTxTimeLastReport = 0;
private int mRxTimeLastReport = 0;
private long lastLinkLayerStatsUpdate = 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 - lastOntimeReportTimeStamp);
lastOntimeReportTimeStamp = 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 - lastScreenStateChangeTimeStamp);
sb.append(String.format(" from screen [on:%d period:%d]", on, period));
return sb.toString();
}
WifiLinkLayerStats getWifiLinkLayerStats() {
if (mInterfaceName == null) {
loge("getWifiLinkLayerStats called without an interface");
return null;
}
WifiLinkLayerStats stats = null;
if (mWifiLinkLayerStatsSupported > 0) {
stats = mWifiNative.getWifiLinkLayerStats(mInterfaceName);
if (stats == null && mWifiLinkLayerStatsSupported > 0) {
mWifiLinkLayerStatsSupported -= 1;
} else if (stats != null) {
lastLinkLayerStatsUpdate = mClock.getWallClockMillis();
mOnTime = stats.on_time;
mTxTime = stats.tx_time;
mRxTime = stats.rx_time;
mRunningBeaconCount = stats.beacon_rx;
}
}
if (stats == null || mWifiLinkLayerStatsSupported <= 0) {
long mTxPkts = mFacade.getTxPackets(mInterfaceName);
long mRxPkts = mFacade.getRxPackets(mInterfaceName);
mWifiInfo.updatePacketRates(mTxPkts, mRxPkts);
} else {
mWifiInfo.updatePacketRates(stats, lastLinkLayerStatsUpdate);
}
return stats;
}
private byte[] getDstMacForKeepalive(KeepalivePacketData packetData)
throws KeepalivePacketData.InvalidPacketException {
try {
InetAddress gateway = RouteInfo.selectBestRoute(
mLinkProperties.getRoutes(), packetData.dstAddress).getGateway();
String dstMacStr = macAddressFromRoute(gateway.getHostAddress());
return NativeUtil.macAddressToByteArray(dstMacStr);
} catch (NullPointerException | IllegalArgumentException e) {
throw new KeepalivePacketData.InvalidPacketException(
ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS);
}
}
private static int getEtherProtoForKeepalive(KeepalivePacketData packetData)
throws KeepalivePacketData.InvalidPacketException {
if (packetData.dstAddress instanceof Inet4Address) {
return OsConstants.ETH_P_IP;
} else if (packetData.dstAddress instanceof Inet6Address) {
return OsConstants.ETH_P_IPV6;
} else {
throw new KeepalivePacketData.InvalidPacketException(
ConnectivityManager.PacketKeepalive.ERROR_INVALID_IP_ADDRESS);
}
}
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 (KeepalivePacketData.InvalidPacketException e) {
return e.error;
}
int ret = mWifiNative.startSendingOffloadedPacket(
mInterfaceName, slot, dstMac, packet, proto, intervalSeconds * 1000);
if (ret != 0) {
loge("startWifiIPPacketOffload(" + slot + ", " + intervalSeconds +
"): hardware error " + ret);
return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR;
} else {
return ConnectivityManager.PacketKeepalive.SUCCESS;
}
}
int stopWifiIPPacketOffload(int slot) {
int ret = mWifiNative.stopSendingOffloadedPacket(mInterfaceName, slot);
if (ret != 0) {
loge("stopWifiIPPacketOffload(" + slot + "): hardware error " + ret);
return ConnectivityManager.PacketKeepalive.ERROR_HARDWARE_ERROR;
} else {
return ConnectivityManager.PacketKeepalive.SUCCESS;
}
}
int startRssiMonitoringOffload(byte maxRssi, byte minRssi,
WifiNative.WifiRssiEventHandler rssiHandler) {
return mWifiNative.startRssiMonitoring(mInterfaceName, maxRssi, minRssi, rssiHandler);
}
int stopRssiMonitoringOffload() {
return mWifiNative.stopRssiMonitoring(mInterfaceName);
}
/**
* TODO: doc
*/
public void setSupplicantRunning(boolean enable) {
if (enable) {
sendMessage(CMD_START_SUPPLICANT);
} else {
sendMessage(CMD_STOP_SUPPLICANT);
}
}
/**
* TODO: doc
*/
public void setHostApRunning(SoftApModeConfiguration wifiConfig, boolean enable) {
if (enable) {
sendMessage(CMD_START_AP, wifiConfig);
} else {
sendMessage(CMD_STOP_AP);
}
}
/**
* TODO: doc
*/
public int syncGetWifiState() {
return mWifiState.get();
}
/**
* TODO: doc
*/
public String syncGetWifiStateByName() {
switch (mWifiState.get()) {
case WIFI_STATE_DISABLING:
return "disabling";
case WIFI_STATE_DISABLED:
return "disabled";
case WIFI_STATE_ENABLING:
return "enabling";
case WIFI_STATE_ENABLED:
return "enabled";
case WIFI_STATE_UNKNOWN:
return "unknown state";
default:
return "[invalid state]";
}
}
public boolean isConnected() {
return getCurrentState() == mConnectedState;
}
public boolean isDisconnected() {
return getCurrentState() == mDisconnectedState;
}
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(TAG, "Supplicant is under transient state: " + supplicantState);
}
return true;
} else {
if (mVerboseLoggingEnabled) {
Log.d(TAG, "Supplicant is under steady state: " + supplicantState);
}
}
return false;
}
/**
* Get status information for the current connection, if any.
*
* @return a {@link WifiInfo} object containing information about the current connection
*/
public WifiInfo syncRequestConnectionInfo() {
WifiInfo result = new WifiInfo(mWifiInfo);
return result;
}
public WifiInfo getWifiInfo() {
return mWifiInfo;
}
public DhcpResults syncGetDhcpResults() {
synchronized (mDhcpResultsLock) {
return new DhcpResults(mDhcpResults);
}
}
/**
* TODO: doc
*/
public void setOperationalMode(int mode) {
if (mVerboseLoggingEnabled) log("setting operational mode to " + String.valueOf(mode));
mModeChange = true;
sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0);
}
/**
* Initiates a system-level bugreport, in a non-blocking fashion.
*/
public void takeBugReport(String bugTitle, String bugDetail) {
mWifiDiagnostics.takeBugReport(bugTitle, bugDetail);
}
/**
* Allow tests to confirm the operational mode for WSM.
*/
@VisibleForTesting
protected int getOperationalModeForTest() {
return mOperationalMode;
}
/**
* Retrieve the WifiMulticastLockManager.FilterController callback for registration.
*/
protected WifiMulticastLockManager.FilterController getMcastLockManagerFilterController() {
return mMcastLockManagerFilterController;
}
public boolean syncQueryPasspointIcon(AsyncChannel channel, long bssid, String fileName) {
Bundle bundle = new Bundle();
bundle.putLong(EXTRA_OSU_ICON_QUERY_BSSID, bssid);
bundle.putString(EXTRA_OSU_ICON_QUERY_FILENAME, fileName);
Message resultMsg = channel.sendMessageSynchronously(CMD_QUERY_OSU_ICON, bundle);
int result = resultMsg.arg1;
resultMsg.recycle();
return result == 1;
}
public int matchProviderWithCurrentNetwork(AsyncChannel channel, String fqdn) {
Message resultMsg = channel.sendMessageSynchronously(CMD_MATCH_PROVIDER_NETWORK, fqdn);
int result = resultMsg.arg1;
resultMsg.recycle();
return result;
}
/**
* Deauthenticate and set the re-authentication hold off time for the current network
* @param holdoff hold off time in milliseconds
* @param ess set if the hold off pertains to an ESS rather than a BSS
*/
public void deauthenticateNetwork(AsyncChannel channel, long holdoff, boolean ess) {
// TODO: This needs an implementation
}
public void disableEphemeralNetwork(String SSID) {
if (SSID != null) {
sendMessage(CMD_DISABLE_EPHEMERAL_NETWORK, SSID);
}
}
/**
* Disconnect from Access Point
*/
public void disconnectCommand() {
sendMessage(CMD_DISCONNECT);
}
public void disconnectCommand(int uid, int reason) {
sendMessage(CMD_DISCONNECT, uid, reason);
}
/**
* Initiate a reconnection to AP
*/
public void reconnectCommand(WorkSource workSource) {
sendMessage(CMD_RECONNECT, workSource);
}
/**
* Initiate a re-association to AP
*/
public void reassociateCommand() {
sendMessage(CMD_REASSOCIATE);
}
/**
* Reload networks and then reconnect; helps load correct data for TLS networks
*/
public void reloadTlsNetworksAndReconnect() {
sendMessage(CMD_RELOAD_TLS_AND_RECONNECT);
}
/**
* Add a network synchronously
*
* @return network id of the new network
*/
public int syncAddOrUpdateNetwork(AsyncChannel channel, WifiConfiguration config) {
Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_NETWORK, config);
int result = resultMsg.arg1;
resultMsg.recycle();
return result;
}
/**
* Get configured networks synchronously
*
* @param channel
* @return
*/
public List<WifiConfiguration> syncGetConfiguredNetworks(int uuid, AsyncChannel channel) {
Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS, uuid);
if (resultMsg == null) { // an error has occurred
return null;
} else {
List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj;
resultMsg.recycle();
return result;
}
}
public List<WifiConfiguration> syncGetPrivilegedConfiguredNetwork(AsyncChannel channel) {
Message resultMsg = channel.sendMessageSynchronously(
CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS);
List<WifiConfiguration> result = (List<WifiConfiguration>) resultMsg.obj;
resultMsg.recycle();
return result;
}
public WifiConfiguration syncGetMatchingWifiConfig(ScanResult scanResult, AsyncChannel channel) {
Message resultMsg = channel.sendMessageSynchronously(CMD_GET_MATCHING_CONFIG, scanResult);
WifiConfiguration config = (WifiConfiguration) resultMsg.obj;
resultMsg.recycle();
return config;
}
List<WifiConfiguration> getAllMatchingWifiConfigs(ScanResult scanResult,
AsyncChannel channel) {
Message resultMsg = channel.sendMessageSynchronously(CMD_GET_ALL_MATCHING_CONFIGS,
scanResult);
List<WifiConfiguration> configs = (List<WifiConfiguration>) resultMsg.obj;
resultMsg.recycle();
return configs;
}
/**
* Retrieve a list of {@link OsuProvider} associated with the given AP synchronously.
*
* @param scanResult The scan result of the AP
* @param channel Channel for communicating with the state machine
* @return List of {@link OsuProvider}
*/
public List<OsuProvider> syncGetMatchingOsuProviders(ScanResult scanResult,
AsyncChannel channel) {
Message resultMsg =
channel.sendMessageSynchronously(CMD_GET_MATCHING_OSU_PROVIDERS, scanResult);
List<OsuProvider> providers = (List<OsuProvider>) resultMsg.obj;
resultMsg.recycle();
return providers;
}
/**
* Add or update a Passpoint configuration synchronously.
*
* @param channel Channel for communicating with the state machine
* @param config The configuration to add or update
* @return true on success
*/
public boolean syncAddOrUpdatePasspointConfig(AsyncChannel channel,
PasspointConfiguration config, int uid) {
Message resultMsg = channel.sendMessageSynchronously(CMD_ADD_OR_UPDATE_PASSPOINT_CONFIG,
uid, 0, config);
boolean result = (resultMsg.arg1 == SUCCESS);
resultMsg.recycle();
return result;
}
/**
* Remove a Passpoint configuration synchronously.
*
* @param channel Channel for communicating with the state machine
* @param fqdn The FQDN of the Passpoint configuration to remove
* @return true on success
*/
public boolean syncRemovePasspointConfig(AsyncChannel channel, String fqdn) {
Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_PASSPOINT_CONFIG,
fqdn);
boolean result = (resultMsg.arg1 == SUCCESS);
resultMsg.recycle();
return result;
}
/**
* Get the list of installed Passpoint configurations synchronously.
*
* @param channel Channel for communicating with the state machine
* @return List of {@link PasspointConfiguration}
*/
public List<PasspointConfiguration> syncGetPasspointConfigs(AsyncChannel channel) {
Message resultMsg = channel.sendMessageSynchronously(CMD_GET_PASSPOINT_CONFIGS);
List<PasspointConfiguration> result = (List<PasspointConfiguration>) resultMsg.obj;
resultMsg.recycle();
return result;
}
/**
* 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, AsyncChannel channel) {
Message msg = Message.obtain();
msg.what = CMD_START_SUBSCRIPTION_PROVISIONING;
msg.arg1 = callingUid;
msg.obj = callback;
msg.getData().putParcelable(EXTRA_OSU_PROVIDER, provider);
Message resultMsg = channel.sendMessageSynchronously(msg);
boolean result = resultMsg.arg1 != 0;
resultMsg.recycle();
return result;
}
/**
* Get adaptors synchronously
*/
public int syncGetSupportedFeatures(AsyncChannel channel) {
Message resultMsg = channel.sendMessageSynchronously(CMD_GET_SUPPORTED_FEATURES);
int supportedFeatureSet = resultMsg.arg1;
resultMsg.recycle();
// Mask the feature set against system properties.
boolean disableRtt = mPropertyService.getBoolean("config.disable_rtt", false);
if (disableRtt) {
supportedFeatureSet &=
~(WifiManager.WIFI_FEATURE_D2D_RTT | WifiManager.WIFI_FEATURE_D2AP_RTT);
}
return supportedFeatureSet;
}
/**
* Get link layers stats for adapter synchronously
*/
public WifiLinkLayerStats syncGetLinkLayerStats(AsyncChannel channel) {
Message resultMsg = channel.sendMessageSynchronously(CMD_GET_LINK_LAYER_STATS);
WifiLinkLayerStats result = (WifiLinkLayerStats) resultMsg.obj;
resultMsg.recycle();
return result;
}
/**
* Delete a network
*
* @param networkId id of the network to be removed
*/
public boolean syncRemoveNetwork(AsyncChannel channel, int networkId) {
Message resultMsg = channel.sendMessageSynchronously(CMD_REMOVE_NETWORK, networkId);
boolean result = (resultMsg.arg1 != FAILURE);
resultMsg.recycle();
return result;
}
/**
* Enable a network
*
* @param netId network id of the network
* @param disableOthers true, if all other networks have to be disabled
* @return {@code true} if the operation succeeds, {@code false} otherwise
*/
public boolean syncEnableNetwork(AsyncChannel channel, int netId, boolean disableOthers) {
Message resultMsg = channel.sendMessageSynchronously(CMD_ENABLE_NETWORK, netId,
disableOthers ? 1 : 0);
boolean result = (resultMsg.arg1 != FAILURE);
resultMsg.recycle();
return result;
}
/**
* Disable a network
*
* @param netId network id of the network
* @return {@code true} if the operation succeeds, {@code false} otherwise
*/
public boolean syncDisableNetwork(AsyncChannel channel, int netId) {
Message resultMsg = channel.sendMessageSynchronously(WifiManager.DISABLE_NETWORK, netId);
boolean result = (resultMsg.what != WifiManager.DISABLE_NETWORK_FAILED);
resultMsg.recycle();
return result;
}
public void enableRssiPolling(boolean enabled) {
sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0);
}
/**
* Set high performance mode of operation.
* Enabling would set active power mode and disable suspend optimizations;
* disabling would set auto power mode and enable suspend optimizations
*
* @param enable true if enable, false otherwise
*/
public void setHighPerfModeEnabled(boolean enable) {
sendMessage(CMD_SET_HIGH_PERF_MODE, enable ? 1 : 0, 0);
}
/**
* reset cached SIM credential data
*/
public synchronized void resetSimAuthNetworks(boolean simPresent) {
sendMessage(CMD_RESET_SIM_NETWORKS, simPresent ? 1 : 0);
}
/**
* Get Network object of current wifi network
* @return Network object of current wifi network
*/
public Network getCurrentNetwork() {
if (mNetworkAgent != null) {
return new Network(mNetworkAgent.netId);
} else {
return null;
}
}
/**
* Enable TDLS for a specific MAC address
*/
public void enableTdls(String remoteMacAddress, boolean enable) {
int enabler = enable ? 1 : 0;
sendMessage(CMD_ENABLE_TDLS, enabler, 0, remoteMacAddress);
}
/**
* Send a message indicating bluetooth adapter connection state changed
*/
public void sendBluetoothAdapterStateChange(int state) {
sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0);
}
/**
* Send a message indicating a package has been uninstalled.
*/
public void removeAppConfigs(String packageName, int uid) {
// Build partial AppInfo manually - package may not exist in database any more
ApplicationInfo ai = new ApplicationInfo();
ai.packageName = packageName;
ai.uid = uid;
sendMessage(CMD_REMOVE_APP_CONFIGURATIONS, ai);
}
/**
* Send a message indicating a user has been removed.
*/
public void removeUserConfigs(int userId) {
sendMessage(CMD_REMOVE_USER_CONFIGURATIONS, userId);
}
public void updateBatteryWorkSource(WorkSource newSource) {
synchronized (mRunningWifiUids) {
try {
if (newSource != null) {
mRunningWifiUids.set(newSource);
}
if (mIsRunning) {
if (mReportedRunning) {
// If the work source has changed since last time, need
// to remove old work from battery stats.
if (!mLastRunningWifiUids.equals(mRunningWifiUids)) {
mBatteryStats.noteWifiRunningChanged(mLastRunningWifiUids,
mRunningWifiUids);
mLastRunningWifiUids.set(mRunningWifiUids);
}
} else {
// Now being started, report it.
mBatteryStats.noteWifiRunning(mRunningWifiUids);
mLastRunningWifiUids.set(mRunningWifiUids);
mReportedRunning = true;
}
} else {
if (mReportedRunning) {
// Last reported we were running, time to stop.
mBatteryStats.noteWifiStopped(mLastRunningWifiUids);
mLastRunningWifiUids.clear();
mReportedRunning = false;
}
}
mWakeLock.setWorkSource(newSource);
} catch (RemoteException ignore) {
}
}
}
public void dumpIpClient(FileDescriptor fd, PrintWriter pw, String[] args) {
if (mIpClient != null) {
mIpClient.dump(fd, pw, args);
}
}
@Override
public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
super.dump(fd, pw, args);
mSupplicantStateTracker.dump(fd, pw, args);
pw.println("mLinkProperties " + mLinkProperties);
pw.println("mWifiInfo " + mWifiInfo);
pw.println("mDhcpResults " + mDhcpResults);
pw.println("mNetworkInfo " + mNetworkInfo);
pw.println("mLastSignalLevel " + mLastSignalLevel);
pw.println("mLastBssid " + mLastBssid);
pw.println("mLastNetworkId " + mLastNetworkId);
pw.println("mOperationalMode " + mOperationalMode);
pw.println("mUserWantsSuspendOpt " + mUserWantsSuspendOpt);
pw.println("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled);
mCountryCode.dump(fd, pw, args);
if (mNetworkFactory != null) {
mNetworkFactory.dump(fd, pw, args);
} else {
pw.println("mNetworkFactory is not initialized");
}
if (mUntrustedNetworkFactory != null) {
mUntrustedNetworkFactory.dump(fd, pw, args);
} else {
pw.println("mUntrustedNetworkFactory is not initialized");
}
pw.println("Wlan Wake Reasons:" + mWifiNative.getWlanWakeReasonCount());
pw.println();
mWifiConfigManager.dump(fd, pw, args);
pw.println();
mPasspointManager.dump(pw);
pw.println();
mWifiDiagnostics.captureBugReportData(WifiDiagnostics.REPORT_REASON_USER_ACTION);
mWifiDiagnostics.dump(fd, pw, args);
dumpIpClient(fd, pw, args);
if (mWifiConnectivityManager != null) {
mWifiConnectivityManager.dump(fd, pw, args);
} else {
pw.println("mWifiConnectivityManager is not initialized");
}
mWifiInjector.getWakeupController().dump(fd, pw, args);
}
public void handleUserSwitch(int userId) {
sendMessage(CMD_USER_SWITCH, userId);
}
public void handleUserUnlock(int userId) {
sendMessage(CMD_USER_UNLOCK, userId);
}
public void handleUserStop(int userId) {
sendMessage(CMD_USER_STOP, userId);
}
/**
* ******************************************************
* Internal private functions
* ******************************************************
*/
private void logStateAndMessage(Message message, State state) {
messageHandlingStatus = 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();
if (mScreenOn) {
sb.append("!");
}
if (messageHandlingStatus != MESSAGE_HANDLING_STATUS_UNKNOWN) {
sb.append("(").append(messageHandlingStatus).append(")");
}
sb.append(smToString(msg));
if (msg.sendingUid > 0 && msg.sendingUid != Process.WIFI_UID) {
sb.append(" uid=" + msg.sendingUid);
}
sb.append(" rt=").append(mClock.getUptimeSinceBootMillis());
sb.append("/").append(mClock.getElapsedSinceBootMillis());
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 WifiManager.SAVE_NETWORK:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
config = (WifiConfiguration) msg.obj;
if (config != null) {
sb.append(" ").append(config.configKey());
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");
}
if (config.selfAdded) {
sb.append(" selfAdded");
}
sb.append(" cuid=").append(config.creatorUid);
sb.append(" suid=").append(config.lastUpdateUid);
}
break;
case WifiManager.FORGET_NETWORK:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
config = (WifiConfiguration) msg.obj;
if (config != null) {
sb.append(" ").append(config.configKey());
sb.append(" nid=").append(config.networkId);
if (config.hiddenSSID) {
sb.append(" hidden");
}
if (config.preSharedKey != null) {
sb.append(" hasPSK");
}
if (config.ephemeral) {
sb.append(" ephemeral");
}
if (config.selfAdded) {
sb.append(" selfAdded");
}
sb.append(" cuid=").append(config.creatorUid);
sb.append(" suid=").append(config.lastUpdateUid);
WifiConfiguration.NetworkSelectionStatus netWorkSelectionStatus =
config.getNetworkSelectionStatus();
sb.append(" ajst=").append(
netWorkSelectionStatus.getNetworkStatusString());
}
break;
case WifiMonitor.ASSOCIATION_REJECTION_EVENT:
sb.append(" ");
sb.append(" timedOut=" + Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
String bssid = (String) msg.obj;
if (bssid != null && bssid.length() > 0) {
sb.append(" ");
sb.append(bssid);
}
sb.append(" blacklist=" + Boolean.toString(didBlackListBSSID));
break;
case WifiMonitor.NETWORK_CONNECTION_EVENT:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
sb.append(" ").append(mLastBssid);
sb.append(" nid=").append(mLastNetworkId);
config = getCurrentWifiConfiguration();
if (config != null) {
sb.append(" ").append(config.configKey());
}
key = mWifiConfigManager.getLastSelectedNetworkConfigKey();
if (key != null) {
sb.append(" last=").append(key);
}
break;
case CMD_TARGET_BSSID:
case CMD_ASSOCIATED_BSSID:
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 (mTargetRoamBSSID != null) {
sb.append(" Target=").append(mTargetRoamBSSID);
}
sb.append(" roam=").append(Boolean.toString(mIsAutoRoaming));
break;
case WifiMonitor.NETWORK_DISCONNECTION_EVENT:
if (msg.obj != null) {
sb.append(" ").append((String) msg.obj);
}
sb.append(" nid=").append(msg.arg1);
sb.append(" reason=").append(msg.arg2);
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_UNWANTED_NETWORK:
case WifiManager.RSSI_PKTCNT_FETCH:
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.score);
sb.append(" link=").append(mWifiInfo.getLinkSpeed());
sb.append(String.format(" tx=%.1f,", mWifiInfo.txSuccessRate));
sb.append(String.format(" %.1f,", mWifiInfo.txRetriesRate));
sb.append(String.format(" %.1f ", mWifiInfo.txBadRate));
sb.append(String.format(" rx=%.1f", mWifiInfo.rxSuccessRate));
sb.append(String.format(" bcn=%d", mRunningBeaconCount));
report = reportOnTime();
if (report != null) {
sb.append(" ").append(report);
}
if (mWifiScoreReport.isLastReportValid()) {
sb.append(mWifiScoreReport.getLastReport());
}
break;
case CMD_START_CONNECT:
case WifiManager.CONNECT_NETWORK:
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(" ").append(config.configKey());
}
if (mTargetRoamBSSID != null) {
sb.append(" ").append(mTargetRoamBSSID);
}
sb.append(" roam=").append(Boolean.toString(mIsAutoRoaming));
config = getCurrentWifiConfiguration();
if (config != null) {
sb.append(config.configKey());
}
break;
case CMD_START_ROAM:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
ScanResult result = (ScanResult) msg.obj;
if (result != null) {
now = mClock.getWallClockMillis();
sb.append(" bssid=").append(result.BSSID);
sb.append(" rssi=").append(result.level);
sb.append(" freq=").append(result.frequency);
if (result.seen > 0 && result.seen < now) {
sb.append(" seen=").append(now - result.seen);
} else {
// Somehow the timestamp for this scan result is inconsistent
sb.append(" !seen=").append(result.seen);
}
}
if (mTargetRoamBSSID != null) {
sb.append(" ").append(mTargetRoamBSSID);
}
sb.append(" roam=").append(Boolean.toString(mIsAutoRoaming));
sb.append(" fail count=").append(Integer.toString(mRoamFailCount));
break;
case CMD_ADD_OR_UPDATE_NETWORK:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
if (msg.obj != null) {
config = (WifiConfiguration) msg.obj;
sb.append(" ").append(config.configKey());
sb.append(" prio=").append(config.priority);
sb.append(" status=").append(config.status);
if (config.BSSID != null) {
sb.append(" ").append(config.BSSID);
}
WifiConfiguration curConfig = getCurrentWifiConfiguration();
if (curConfig != null) {
if (curConfig.configKey().equals(config.configKey())) {
sb.append(" is current");
} else {
sb.append(" current=").append(curConfig.configKey());
sb.append(" prio=").append(curConfig.priority);
sb.append(" status=").append(curConfig.status);
}
}
}
break;
case WifiManager.DISABLE_NETWORK:
case CMD_ENABLE_NETWORK:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
key = mWifiConfigManager.getLastSelectedNetworkConfigKey();
if (key != null) {
sb.append(" last=").append(key);
}
config = mWifiConfigManager.getConfiguredNetwork(msg.arg1);
if (config != null && (key == null || !config.configKey().equals(key))) {
sb.append(" target=").append(key);
}
break;
case CMD_GET_CONFIGURED_NETWORKS:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
sb.append(" num=").append(mWifiConfigManager.getConfiguredNetworks().size());
break;
case DhcpClient.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 DhcpClient.CMD_POST_DHCP_ACTION:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
if (msg.arg1 == DhcpClient.DHCP_SUCCESS) {
sb.append(" OK ");
} else if (msg.arg1 == DhcpClient.DHCP_FAILURE) {
sb.append(" FAIL ");
}
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 = getCurrentWifiConfiguration();
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(roamWatchdogCount);
break;
case CMD_DISCONNECTING_WATCHDOG_TIMER:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
sb.append(" cur=").append(disconnectingWatchdogCount);
break;
case CMD_DISABLE_P2P_WATCHDOG_TIMER:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
sb.append(" cur=").append(mDisableP2pWatchdogCount);
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_USER_SWITCH:
sb.append(" userId=");
sb.append(Integer.toString(msg.arg1));
break;
case CMD_IPV4_PROVISIONING_SUCCESS:
sb.append(" ");
if (msg.arg1 == DhcpClient.DHCP_SUCCESS) {
sb.append("DHCP_OK");
} else if (msg.arg1 == CMD_STATIC_IP_SUCCESS) {
sb.append("STATIC_OK");
} else {
sb.append(Integer.toString(msg.arg1));
}
break;
case CMD_IPV4_PROVISIONING_FAILURE:
sb.append(" ");
if (msg.arg1 == DhcpClient.DHCP_FAILURE) {
sb.append("DHCP_FAIL");
} else if (msg.arg1 == CMD_STATIC_IP_FAILURE) {
sb.append("STATIC_FAIL");
} else {
sb.append(Integer.toString(msg.arg1));
}
break;
default:
sb.append(" ");
sb.append(Integer.toString(msg.arg1));
sb.append(" ");
sb.append(Integer.toString(msg.arg2));
break;
}
return sb.toString();
}
private void handleScreenStateChanged(boolean screenOn) {
mScreenOn = screenOn;
if (mVerboseLoggingEnabled) {
logd(" handleScreenStateChanged Enter: screenOn=" + screenOn
+ " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt
+ " state " + getCurrentState().getName()
+ " suppState:" + mSupplicantStateTracker.getSupplicantStateName());
}
enableRssiPolling(screenOn);
if (mUserWantsSuspendOpt.get()) {
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;
lastScreenStateChangeTimeStamp = lastLinkLayerStatsUpdate;
mWifiMetrics.setScreenState(screenOn);
if (mWifiConnectivityManager != null) {
mWifiConnectivityManager.handleScreenStateChanged(screenOn);
}
if (mVerboseLoggingEnabled) log("handleScreenStateChanged Exit: " + screenOn);
}
private void checkAndSetConnectivityInstance() {
if (mCm == null) {
mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
}
}
private void setSuspendOptimizationsNative(int reason, boolean enabled) {
if (mVerboseLoggingEnabled) {
log("setSuspendOptimizationsNative: " + reason + " " + enabled
+ " -want " + mUserWantsSuspendOpt.get()
+ " 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 && mUserWantsSuspendOpt.get()) {
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);
}
}
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);
}
private void sendWifiScanAvailable(boolean available) {
int state = WIFI_STATE_DISABLED;
if (available) {
state = WIFI_STATE_ENABLED;
}
final Intent intent = new Intent(WifiManager.WIFI_SCAN_AVAILABLE);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
intent.putExtra(WifiManager.EXTRA_SCAN_AVAILABLE, state);
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
}
private void setWifiState(int wifiState) {
final int previousWifiState = mWifiState.get();
mWifiState.set(wifiState);
if (mVerboseLoggingEnabled) log("setWifiState: " + syncGetWifiStateByName());
final Intent intent = new Intent(WifiManager.WIFI_STATE_CHANGED_ACTION);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
intent.putExtra(WifiManager.EXTRA_WIFI_STATE, wifiState);
intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_STATE, previousWifiState);
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
}
/*
* Fetch RSSI, linkspeed, and frequency on current connection
*/
private void fetchRssiLinkSpeedAndFrequencyNative() {
Integer newRssi = null;
Integer newLinkSpeed = null;
Integer newFrequency = null;
WifiNative.SignalPollResult pollResult = mWifiNative.signalPoll(mInterfaceName);
if (pollResult == null) {
return;
}
newRssi = pollResult.currentRssi;
newLinkSpeed = pollResult.txBitrate;
newFrequency = pollResult.associationFrequency;
if (mVerboseLoggingEnabled) {
logd("fetchRssiLinkSpeedAndFrequencyNative rssi=" + newRssi +
" linkspeed=" + newLinkSpeed + " freq=" + newFrequency);
}
if (newRssi != null && newRssi > WifiInfo.INVALID_RSSI && newRssi < WifiInfo.MAX_RSSI) {
// screen out invalid values
/* some implementations avoid negative values by adding 256
* so we need to adjust for that here.
*/
if (newRssi > 0) 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 = WifiManager.calculateSignalLevel(newRssi, WifiManager.RSSI_LEVELS);
if (newSignalLevel != mLastSignalLevel) {
updateCapabilities();
sendRssiChangeBroadcast(newRssi);
}
mLastSignalLevel = newSignalLevel;
} else {
mWifiInfo.setRssi(WifiInfo.INVALID_RSSI);
updateCapabilities();
}
if (newLinkSpeed != null) {
mWifiInfo.setLinkSpeed(newLinkSpeed);
}
if (newFrequency != null && newFrequency > 0) {
mWifiInfo.setFrequency(newFrequency);
}
mWifiConfigManager.updateScanDetailCacheFromWifiInfo(mWifiInfo);
/*
* Increment various performance metrics
*/
if (newRssi != null && newLinkSpeed != null && newFrequency != null) {
mWifiMetrics.handlePollResult(mWifiInfo);
}
}
// Polling has completed, hence we wont have a score anymore
private void cleanWifiScore() {
mWifiInfo.txBadRate = 0;
mWifiInfo.txSuccessRate = 0;
mWifiInfo.txRetriesRate = 0;
mWifiInfo.rxSuccessRate = 0;
mWifiScoreReport.reset();
}
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 (getNetworkDetailedState() == 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: " + getNetworkDetailedState());
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 (mDhcpResultsLock) {
if (mDhcpResults != null) {
mDhcpResults.clear();
}
}
// Now clear the merged link properties.
mLinkProperties.clear();
if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties);
}
/**
* try to update default route MAC address.
*/
private String updateDefaultRouteMacAddress(int timeout) {
String address = null;
for (RouteInfo route : mLinkProperties.getRoutes()) {
if (route.isDefaultRoute() && route.hasGateway()) {
InetAddress gateway = route.getGateway();
if (gateway instanceof Inet4Address) {
if (mVerboseLoggingEnabled) {
logd("updateDefaultRouteMacAddress found Ipv4 default :"
+ gateway.getHostAddress());
}
address = macAddressFromRoute(gateway.getHostAddress());
/* The gateway's MAC address is known */
if ((address == null) && (timeout > 0)) {
boolean reachable = false;
TrafficStats.setThreadStatsTag(TrafficStats.TAG_SYSTEM_PROBE);
try {
reachable = gateway.isReachable(timeout);
} catch (Exception e) {
loge("updateDefaultRouteMacAddress exception reaching :"
+ gateway.getHostAddress());
} finally {
TrafficStats.clearThreadStatsTag();
if (reachable == true) {
address = macAddressFromRoute(gateway.getHostAddress());
if (mVerboseLoggingEnabled) {
logd("updateDefaultRouteMacAddress reachable (tried again) :"
+ gateway.getHostAddress() + " found " + address);
}
}
}
}
if (address != null) {
mWifiConfigManager.setNetworkDefaultGwMacAddress(mLastNetworkId, address);
}
}
}
}
return address;
}
private void sendRssiChangeBroadcast(final int newRssi) {
try {
mBatteryStats.noteWifiRssiChanged(newRssi);
} catch (RemoteException e) {
// Won't happen.
}
Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
intent.putExtra(WifiManager.EXTRA_NEW_RSSI, newRssi);
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
}
private void sendNetworkStateChangeBroadcast(String bssid) {
Intent intent = new Intent(WifiManager.NETWORK_STATE_CHANGED_ACTION);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
NetworkInfo networkInfo = new NetworkInfo(mNetworkInfo);
networkInfo.setExtraInfo(null);
intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, networkInfo);
//TODO(b/69974497) This should be non-sticky, but settings needs fixing first.
mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL);
}
private void sendLinkConfigurationChangedBroadcast() {
Intent intent = new Intent(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties(mLinkProperties));
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
}
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);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
}
/**
* Record the detailed state of a network.
*
* @param state the new {@code DetailedState}
*/
private boolean setNetworkDetailedState(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 ne 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("setDetailed state, old ="
+ mNetworkInfo.getDetailedState() + " and new state=" + state
+ " hidden=" + hidden);
}
if (hidden == true) {
return false;
}
if (state != mNetworkInfo.getDetailedState()) {
mNetworkInfo.setDetailedState(state, null, null);
if (mNetworkAgent != null) {
mNetworkAgent.sendNetworkInfo(mNetworkInfo);
}
sendNetworkStateChangeBroadcast(null);
return true;
}
return false;
}
private DetailedState getNetworkDetailedState() {
return mNetworkInfo.getDetailedState();
}
private SupplicantState handleSupplicantStateChange(Message message) {
StateChangeResult stateChangeResult = (StateChangeResult) message.obj;
SupplicantState state = stateChangeResult.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);
} else {
// Reset parameters according to WifiInfo.reset()
mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID);
mWifiInfo.setBSSID(null);
mWifiInfo.setSSID(null);
}
final WifiConfiguration config = getCurrentWifiConfiguration();
if (config != null) {
mWifiInfo.setEphemeral(config.ephemeral);
// 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);
}
}
}
}
mSupplicantStateTracker.sendMessage(Message.obtain(message));
return state;
}
/**
* Resets the Wi-Fi Connections by clearing any state, resetting any sockets
* using the interface, stopping DHCP & disabling interface
*/
private void handleNetworkDisconnect() {
if (mVerboseLoggingEnabled) {
log("handleNetworkDisconnect: Stopping DHCP and clearing IP"
+ " stack:" + Thread.currentThread().getStackTrace()[2].getMethodName()
+ " - " + Thread.currentThread().getStackTrace()[3].getMethodName()
+ " - " + Thread.currentThread().getStackTrace()[4].getMethodName()
+ " - " + Thread.currentThread().getStackTrace()[5].getMethodName());
}
stopRssiMonitoringOffload();
clearTargetBssid("handleNetworkDisconnect");
stopIpClient();
/* Reset data structures */
mWifiScoreReport.reset();
mWifiInfo.reset();
/* Reset roaming parameters */
mIsAutoRoaming = false;
setNetworkDetailedState(DetailedState.DISCONNECTED);
if (mNetworkAgent != null) {
mNetworkAgent.sendNetworkInfo(mNetworkInfo);
mNetworkAgent = null;
}
/* Clear network properties */
clearLinkProperties();
/* Cend event to CM & network change broadcast */
sendNetworkStateChangeBroadcast(mLastBssid);
mLastBssid = null;
registerDisconnected();
mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID;
}
private void handleSupplicantConnectionLoss(boolean killSupplicant) {
/* Socket connection can be lost when we do a graceful shutdown
* or when the driver is hung. Ensure supplicant is stopped here.
*/
if (killSupplicant) {
mWifiMonitor.stopAllMonitoring();
}
sendSupplicantConnectionChangedBroadcast(false);
setWifiState(WIFI_STATE_DISABLED);
}
void handlePreDhcpSetup() {
if (!mBluetoothConnectionActive) {
/*
* There are problems setting the Wi-Fi driver's power
* mode to active when bluetooth coexistence mode is
* enabled or sense.
* <p>
* 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.
* <p>
* 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);
mWifiNative.setPowerSave(mInterfaceName, false);
// Update link layer stats
getWifiLinkLayerStats();
if (mWifiP2pChannel != null) {
/* P2p discovery breaks dhcp, shut it down in order to get through this */
Message msg = new Message();
msg.what = WifiP2pServiceImpl.BLOCK_DISCOVERY;
msg.arg1 = WifiP2pServiceImpl.ENABLED;
msg.arg2 = DhcpClient.CMD_PRE_DHCP_ACTION_COMPLETE;
msg.obj = WifiStateMachine.this;
mWifiP2pChannel.sendMessage(msg);
} else {
// If the p2p service is not running, we can proceed directly.
sendMessage(DhcpClient.CMD_PRE_DHCP_ACTION_COMPLETE);
}
}
void handlePostDhcpSetup() {
/* Restore power save and suspend optimizations */
setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true);
mWifiNative.setPowerSave(mInterfaceName, true);
p2pSendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED);
// Set the coexistence mode back to its default value
mWifiNative.setBluetoothCoexistenceMode(
mInterfaceName, WifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE);
}
private static final long DIAGS_CONNECT_TIMEOUT_MILLIS = 60 * 1000;
private long mDiagsConnectionStartMillis = -1;
/**
* Inform other components that a new connection attempt is starting.
*/
private void reportConnectionAttemptStart(
WifiConfiguration config, String targetBSSID, int roamType) {
mWifiMetrics.startConnectionEvent(config, targetBSSID, roamType);
mDiagsConnectionStartMillis = mClock.getElapsedSinceBootMillis();
mWifiDiagnostics.reportConnectionEvent(
mDiagsConnectionStartMillis, WifiDiagnostics.CONNECTION_EVENT_STARTED);
mWrongPasswordNotifier.onNewConnectionAttempt();
// TODO(b/35329124): Remove CMD_DIAGS_CONNECT_TIMEOUT, once WifiStateMachine
// grows a proper CONNECTING state.
sendMessageDelayed(CMD_DIAGS_CONNECT_TIMEOUT,
mDiagsConnectionStartMillis, DIAGS_CONNECT_TIMEOUT_MILLIS);
}
/**
* Inform other components (WifiMetrics, WifiDiagnostics, WifiConnectivityManager, etc.) that
* the current connection attempt has concluded.
*/
private void reportConnectionAttemptEnd(int level2FailureCode, int connectivityFailureCode) {
mWifiMetrics.endConnectionEvent(level2FailureCode, connectivityFailureCode);
mWifiConnectivityManager.handleConnectionAttemptEnded(level2FailureCode);
switch (level2FailureCode) {
case WifiMetrics.ConnectionEvent.FAILURE_NONE:
// Ideally, we'd wait until IP reachability has been confirmed. this code falls
// short in two ways:
// - at the time of the CMD_IP_CONFIGURATION_SUCCESSFUL event, we don't know if we
// actually have ARP reachability. it might be better to wait until the wifi
// network has been validated by IpClient.
// - in the case of a roaming event (intra-SSID), we probably trigger when L2 is
// complete.
//
// TODO(b/34181219): Fix the above.
mWifiDiagnostics.reportConnectionEvent(
mDiagsConnectionStartMillis, WifiDiagnostics.CONNECTION_EVENT_SUCCEEDED);
break;
case WifiMetrics.ConnectionEvent.FAILURE_REDUNDANT_CONNECTION_ATTEMPT:
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:
mWifiDiagnostics.reportConnectionEvent(
mDiagsConnectionStartMillis, WifiDiagnostics.CONNECTION_EVENT_FAILED);
}
mDiagsConnectionStartMillis = -1;
}
private void handleIPv4Success(DhcpResults dhcpResults) {
if (mVerboseLoggingEnabled) {
logd("handleIPv4Success <" + dhcpResults.toString() + ">");
logd("link address " + dhcpResults.ipAddress);
}
Inet4Address addr;
synchronized (mDhcpResultsLock) {
mDhcpResults = dhcpResults;
addr = (Inet4Address) dhcpResults.ipAddress.getAddress();
}
if (mIsAutoRoaming) {
int previousAddress = mWifiInfo.getIpAddress();
int newAddress = NetworkUtils.inetAddressToInt(addr);
if (previousAddress != newAddress) {
logd("handleIPv4Success, roaming and address changed" +
mWifiInfo + " got: " + addr);
}
}
mWifiInfo.setInetAddress(addr);
final WifiConfiguration config = getCurrentWifiConfiguration();
if (config != null) {
mWifiInfo.setEphemeral(config.ephemeral);
}
// Set meteredHint if DHCP result says network is metered
if (dhcpResults.hasMeteredHint()) {
mWifiInfo.setMeteredHint(true);
}
updateCapabilities(config);
}
private void handleSuccessfulIpConfiguration() {
mLastSignalLevel = -1; // Force update of signal strength
WifiConfiguration c = getCurrentWifiConfiguration();
if (c != null) {
// Reset IP failure tracking
c.getNetworkSelectionStatus().clearDisableReasonCounter(
WifiConfiguration.NetworkSelectionStatus.DISABLED_DHCP_FAILURE);
// Tell the framework whether the newly connected network is trusted or untrusted.
updateCapabilities(c);
}
}
private void handleIPv4Failure() {
// TODO: Move this to provisioning failure, not DHCP failure.
// DHCPv4 failure is expected on an IPv6-only network.
mWifiDiagnostics.captureBugReportData(WifiDiagnostics.REPORT_REASON_DHCP_FAILURE);
if (mVerboseLoggingEnabled) {
int count = -1;
WifiConfiguration config = getCurrentWifiConfiguration();
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);
synchronized(mDhcpResultsLock) {
if (mDhcpResults != null) {
mDhcpResults.clear();
}
}
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);
}
// TODO: De-duplicated this and handleIpConfigurationLost().
private void handleIpReachabilityLost() {
mWifiInfo.setInetAddress(null);
mWifiInfo.setMeteredHint(false);
// TODO: Determine whether to call some form of mWifiConfigManager.handleSSIDStateChange().
// Disconnect via supplicant, and let autojoin retry connecting to the network.
mWifiNative.disconnect(mInterfaceName);
}
/*
* Read a MAC address in /proc/arp/table, used by WifistateMachine
* 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 colum 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().getHasEverConnected()) {
return false;
}
return true;
}
private class WifiNetworkFactory extends NetworkFactory {
public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) {
super(l, c, TAG, f);
}
@Override
protected void needNetworkFor(NetworkRequest networkRequest, int score) {
synchronized (mWifiReqCountLock) {
if (++mConnectionReqCount == 1) {
if (mWifiConnectivityManager != null && mUntrustedReqCount == 0) {
mWifiConnectivityManager.enable(true);
}
}
}
}
@Override
protected void releaseNetworkFor(NetworkRequest networkRequest) {
synchronized (mWifiReqCountLock) {
if (--mConnectionReqCount == 0) {
if (mWifiConnectivityManager != null && mUntrustedReqCount == 0) {
mWifiConnectivityManager.enable(false);
}
}
}
}
@Override
public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
pw.println("mConnectionReqCount " + mConnectionReqCount);
}
}
private class UntrustedWifiNetworkFactory extends NetworkFactory {
public UntrustedWifiNetworkFactory(Looper l, Context c, String tag, NetworkCapabilities f) {
super(l, c, tag, f);
}
@Override
protected void needNetworkFor(NetworkRequest networkRequest, int score) {
if (!networkRequest.networkCapabilities.hasCapability(
NetworkCapabilities.NET_CAPABILITY_TRUSTED)) {
synchronized (mWifiReqCountLock) {
if (++mUntrustedReqCount == 1) {
if (mWifiConnectivityManager != null) {
if (mConnectionReqCount == 0) {
mWifiConnectivityManager.enable(true);
}
mWifiConnectivityManager.setUntrustedConnectionAllowed(true);
}
}
}
}
}
@Override
protected void releaseNetworkFor(NetworkRequest networkRequest) {
if (!networkRequest.networkCapabilities.hasCapability(
NetworkCapabilities.NET_CAPABILITY_TRUSTED)) {
synchronized (mWifiReqCountLock) {
if (--mUntrustedReqCount == 0) {
if (mWifiConnectivityManager != null) {
mWifiConnectivityManager.setUntrustedConnectionAllowed(false);
if (mConnectionReqCount == 0) {
mWifiConnectivityManager.enable(false);
}
}
}
}
}
}
@Override
public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
pw.println("mUntrustedReqCount " + mUntrustedReqCount);
}
}
void maybeRegisterNetworkFactory() {
if (mNetworkFactory == null) {
checkAndSetConnectivityInstance();
if (mCm != null) {
mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext,
NETWORKTYPE, mNetworkCapabilitiesFilter);
mNetworkFactory.setScoreFilter(60);
mNetworkFactory.register();
// We can't filter untrusted network in the capabilities filter because a trusted
// network would still satisfy a request that accepts untrusted ones.
mUntrustedNetworkFactory = new UntrustedWifiNetworkFactory(getHandler().getLooper(),
mContext, NETWORKTYPE_UNTRUSTED, mNetworkCapabilitiesFilter);
mUntrustedNetworkFactory.setScoreFilter(Integer.MAX_VALUE);
mUntrustedNetworkFactory.register();
}
}
}
/**
* WifiStateMachine needs to enable/disable other services when wifi is in client mode. This
* method allows WifiStateMachine to get these additional system services.
*
* At this time, this method is used to setup variables for P2P service and Wifi Aware.
*/
private void getAdditionalWifiServiceInterfaces() {
// First set up Wifi Direct
if (mP2pSupported) {
IBinder s1 = mFacade.getService(Context.WIFI_P2P_SERVICE);
WifiP2pServiceImpl wifiP2pServiceImpl =
(WifiP2pServiceImpl) IWifiP2pManager.Stub.asInterface(s1);
if (wifiP2pServiceImpl != null) {
mWifiP2pChannel = new AsyncChannel();
mWifiP2pChannel.connect(mContext, getHandler(),
wifiP2pServiceImpl.getP2pStateMachineMessenger());
}
}
}
/**
* Register the phone listener if we need to set/reset the power limits during voice call for
* this device.
*/
private void maybeRegisterPhoneListener() {
if (mEnableVoiceCallSarTxPowerLimit) {
logd("Registering for telephony call state changes");
getTelephonyManager().listen(
mPhoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
}
}
/**
* Listen for phone call state events to set/reset TX power limits for SAR requirements.
*/
private class WifiPhoneStateListener extends PhoneStateListener {
WifiPhoneStateListener(Looper looper) {
super(looper);
}
@Override
public void onCallStateChanged(int state, String incomingNumber) {
if (mEnableVoiceCallSarTxPowerLimit) {
if (state == CALL_STATE_OFFHOOK) {
sendMessage(CMD_SELECT_TX_POWER_SCENARIO,
WifiNative.TX_POWER_SCENARIO_VOICE_CALL);
} else if (state == CALL_STATE_IDLE) {
sendMessage(CMD_SELECT_TX_POWER_SCENARIO,
WifiNative.TX_POWER_SCENARIO_NORMAL);
}
}
}
}
/**
* 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(TAG, "No config to change MAC address to");
return;
}
MacAddress currentMac = MacAddress.fromString(mWifiNative.getMacAddress(mInterfaceName));
MacAddress newMac = config.getOrCreateRandomizedMacAddress();
mWifiConfigManager.setNetworkRandomizedMacAddress(config.networkId, newMac);
if (!WifiConfiguration.isValidMacAddressForRandomization(newMac)) {
Log.wtf(TAG, "Config generated an invalid MAC address");
} else if (currentMac.equals(newMac)) {
Log.i(TAG, "No changes in MAC address");
} else {
Log.i(TAG, "ConnectedMacRandomization SSID(" + config.getPrintableSsid()
+ "). setMacAddress(" + newMac.toString() + ") from "
+ currentMac.toString());
boolean setMacSuccess =
mWifiNative.setMacAddress(mInterfaceName, newMac);
Log.i(TAG, "ConnectedMacRandomization ...setMacAddress("
+ newMac.toString() + ") = " + setMacSuccess);
}
}
/**
* Update whether Connected MAC Randomization is enabled in WifiStateMachine
* and WifiInfo.
*/
private void updateConnectedMacRandomizationSetting() {
int macRandomizationFlag = mFacade.getIntegerSetting(
mContext, Settings.Global.WIFI_CONNECTED_MAC_RANDOMIZATION_ENABLED, 0);
boolean macRandomizationEnabled = (macRandomizationFlag == 1);
mEnableConnectedMacRandomization.set(macRandomizationEnabled);
mWifiInfo.setEnableConnectedMacRandomization(macRandomizationEnabled);
Log.d(TAG, "EnableConnectedMacRandomization Setting changed to "
+ macRandomizationEnabled);
}
/********************************************************
* HSM states
*******************************************************/
class DefaultState extends State {
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
switch (message.what) {
case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: {
AsyncChannel ac = (AsyncChannel) message.obj;
if (ac == mWifiP2pChannel) {
if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) {
p2pSendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION);
// since the p2p channel is connected, we should enable p2p if we are in
// connect mode. We may not be in connect mode yet, we may have just
// set the operational mode and started to set up for connect mode.
if (mOperationalMode == CONNECT_MODE) {
// This message will only be handled if we are in Connect mode.
// If we are not in connect mode yet, this will be dropped and the
// ConnectMode.enter method will call to enable p2p.
sendMessage(CMD_ENABLE_P2P);
}
} else {
// TODO: We should probably do some cleanup or attempt a retry
// b/34283611
loge("WifiP2pService connection failure, error=" + message.arg1);
}
} else {
loge("got HALF_CONNECTED for unknown channel");
}
break;
}
case AsyncChannel.CMD_CHANNEL_DISCONNECTED: {
AsyncChannel ac = (AsyncChannel) message.obj;
if (ac == mWifiP2pChannel) {
loge("WifiP2pService channel lost, message.arg1 =" + message.arg1);
//TODO: Re-establish connection to state machine after a delay (b/34283611)
// mWifiP2pChannel.connect(mContext, getHandler(),
// mWifiP2pManager.getMessenger());
}
break;
}
case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE:
mBluetoothConnectionActive = (message.arg1 !=
BluetoothAdapter.STATE_DISCONNECTED);
break;
case CMD_ENABLE_NETWORK:
boolean disableOthers = message.arg2 == 1;
int netId = message.arg1;
boolean ok = mWifiConfigManager.enableNetwork(
netId, disableOthers, message.sendingUid);
if (!ok) {
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
}
replyToMessage(message, message.what, ok ? SUCCESS : FAILURE);
break;
case CMD_ADD_OR_UPDATE_NETWORK:
WifiConfiguration config = (WifiConfiguration) message.obj;
NetworkUpdateResult result =
mWifiConfigManager.addOrUpdateNetwork(config, message.sendingUid);
if (!result.isSuccess()) {
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
}
replyToMessage(message, message.what, result.getNetworkId());
break;
case CMD_REMOVE_NETWORK:
deleteNetworkConfigAndSendReply(message, false);
break;
case CMD_GET_CONFIGURED_NETWORKS:
replyToMessage(message, message.what, mWifiConfigManager.getSavedNetworks());
break;
case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS:
replyToMessage(message, message.what,
mWifiConfigManager.getConfiguredNetworksWithPasswords());
break;
case CMD_ENABLE_RSSI_POLL:
mEnableRssiPolling = (message.arg1 == 1);
break;
case CMD_SET_HIGH_PERF_MODE:
if (message.arg1 == 1) {
setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, false);
} else {
setSuspendOptimizations(SUSPEND_DUE_TO_HIGH_PERF, true);
}
break;
case CMD_INITIALIZE:
ok = mWifiNative.initialize();
mPasspointManager.initializeProvisioner(
mWifiInjector.getWifiServiceHandlerThread().getLooper());
replyToMessage(message, message.what, ok ? SUCCESS : FAILURE);
break;
case CMD_BOOT_COMPLETED:
// get other services that we need to manage
getAdditionalWifiServiceInterfaces();
if (!mWifiConfigManager.loadFromStore()) {
Log.e(TAG, "Failed to load from config store");
}
maybeRegisterNetworkFactory();
maybeRegisterPhoneListener();
break;
case CMD_SCREEN_STATE_CHANGED:
handleScreenStateChanged(message.arg1 != 0);
break;
case CMD_START_SUPPLICANT:
case CMD_STOP_SUPPLICANT:
case CMD_DRIVER_START_TIMED_OUT:
case CMD_START_AP_FAILURE:
case CMD_STOP_AP:
case CMD_AP_STOPPED:
case CMD_DISCONNECT:
case CMD_RECONNECT:
case CMD_REASSOCIATE:
case CMD_RELOAD_TLS_AND_RECONNECT:
case WifiMonitor.SUP_CONNECTION_EVENT:
case WifiMonitor.SUP_DISCONNECTION_EVENT:
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 DhcpClient.CMD_PRE_DHCP_ACTION:
case DhcpClient.CMD_PRE_DHCP_ACTION_COMPLETE:
case DhcpClient.CMD_POST_DHCP_ACTION:
case CMD_ENABLE_P2P:
case CMD_DISABLE_P2P_RSP:
case WifiMonitor.SUP_REQUEST_IDENTITY:
case CMD_TEST_NETWORK_DISCONNECT:
case WifiMonitor.SUP_REQUEST_SIM_AUTH:
case CMD_TARGET_BSSID:
case CMD_START_CONNECT:
case CMD_START_ROAM:
case CMD_ASSOCIATED_BSSID:
case CMD_UNWANTED_NETWORK:
case CMD_DISCONNECTING_WATCHDOG_TIMER:
case CMD_ROAM_WATCHDOG_TIMER:
case CMD_DISABLE_P2P_WATCHDOG_TIMER:
case CMD_DISABLE_EPHEMERAL_NETWORK:
case CMD_SELECT_TX_POWER_SCENARIO:
case CMD_WIFINATIVE_FAILURE:
case CMD_INTERFACE_DESTROYED:
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD;
break;
case CMD_START_AP:
transitionTo(mSoftApState);
break;
case CMD_SET_OPERATIONAL_MODE:
mOperationalMode = message.arg1;
// now processing the mode change - we will start setting up new state and want
// to know about failures
mModeChange = false;
if (mOperationalMode == DISABLED_MODE) {
Log.d(TAG, "set operational mode - disabled. stay in default");
transitionTo(mDefaultState);
break;
} else if (mOperationalMode == CONNECT_MODE) {
transitionTo(mInitialState);
} else if (mOperationalMode == SCAN_ONLY_MODE
|| mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) {
transitionTo(mScanModeState);
} else {
Log.e(TAG, "set operational mode with invalid mode: " + mOperationalMode);
mOperationalMode = DISABLED_MODE;
}
break;
case CMD_SET_SUSPEND_OPT_ENABLED:
if (message.arg1 == 1) {
if (message.arg2 == 1) {
mSuspendWakeLock.release();
}
setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true);
} else {
setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false);
}
break;
case WifiManager.CONNECT_NETWORK:
replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED,
WifiManager.BUSY);
break;
case WifiManager.FORGET_NETWORK:
deleteNetworkConfigAndSendReply(message, true);
break;
case WifiManager.SAVE_NETWORK:
saveNetworkConfigAndSendReply(message);
break;
case WifiManager.DISABLE_NETWORK:
replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED,
WifiManager.BUSY);
break;
case WifiManager.RSSI_PKTCNT_FETCH:
replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_FAILED,
WifiManager.BUSY);
break;
case CMD_GET_SUPPORTED_FEATURES:
int featureSet = mWifiNative.getSupportedFeatureSet(mInterfaceName);
replyToMessage(message, message.what, featureSet);
break;
case CMD_FIRMWARE_ALERT:
if (mWifiDiagnostics != null) {
byte[] buffer = (byte[])message.obj;
int alertReason = message.arg1;
mWifiDiagnostics.captureAlertData(alertReason, buffer);
mWifiMetrics.incrementAlertReasonCount(alertReason);
}
break;
case CMD_GET_LINK_LAYER_STATS:
// Not supported hence reply with error message
replyToMessage(message, message.what, null);
break;
case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED:
NetworkInfo info = (NetworkInfo) message.obj;
mP2pConnected.set(info.isConnected());
break;
case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST:
mTemporarilyDisconnectWifi = (message.arg1 == 1);
replyToMessage(message, WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE);
break;
/* Link configuration (IP address, DNS, ...) changes notified via netlink */
case CMD_UPDATE_LINKPROPERTIES:
updateLinkProperties((LinkProperties) message.obj);
break;
case CMD_GET_MATCHING_CONFIG:
replyToMessage(message, message.what);
break;
case CMD_GET_MATCHING_OSU_PROVIDERS:
replyToMessage(message, message.what, new ArrayList<OsuProvider>());
break;
case CMD_START_SUBSCRIPTION_PROVISIONING:
replyToMessage(message, message.what, 0);
break;
case CMD_IP_CONFIGURATION_SUCCESSFUL:
case CMD_IP_CONFIGURATION_LOST:
case CMD_IP_REACHABILITY_LOST:
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD;
break;
case CMD_REMOVE_APP_CONFIGURATIONS:
deferMessage(message);
break;
case CMD_REMOVE_USER_CONFIGURATIONS:
deferMessage(message);
break;
case CMD_START_IP_PACKET_OFFLOAD:
if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent(
message.arg1,
ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK);
break;
case CMD_STOP_IP_PACKET_OFFLOAD:
if (mNetworkAgent != null) mNetworkAgent.onPacketKeepaliveEvent(
message.arg1,
ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK);
break;
case CMD_START_RSSI_MONITORING_OFFLOAD:
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD;
break;
case CMD_STOP_RSSI_MONITORING_OFFLOAD:
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD;
break;
case CMD_USER_SWITCH:
Set<Integer> removedNetworkIds =
mWifiConfigManager.handleUserSwitch(message.arg1);
if (removedNetworkIds.contains(mTargetNetworkId) ||
removedNetworkIds.contains(mLastNetworkId)) {
// Disconnect and let autojoin reselect a new network
sendMessage(CMD_DISCONNECT);
}
break;
case CMD_USER_UNLOCK:
mWifiConfigManager.handleUserUnlock(message.arg1);
break;
case CMD_USER_STOP:
mWifiConfigManager.handleUserStop(message.arg1);
break;
case CMD_QUERY_OSU_ICON:
case CMD_MATCH_PROVIDER_NETWORK:
/* reply with arg1 = 0 - it returns API failure to the calling app
* (message.what is not looked at)
*/
replyToMessage(message, message.what);
break;
case CMD_ADD_OR_UPDATE_PASSPOINT_CONFIG:
int addResult = mPasspointManager.addOrUpdateProvider(
(PasspointConfiguration) message.obj, message.arg1)
? SUCCESS : FAILURE;
replyToMessage(message, message.what, addResult);
break;
case CMD_REMOVE_PASSPOINT_CONFIG:
int removeResult = mPasspointManager.removeProvider(
(String) message.obj) ? SUCCESS : FAILURE;
replyToMessage(message, message.what, removeResult);
break;
case CMD_GET_PASSPOINT_CONFIGS:
replyToMessage(message, message.what, mPasspointManager.getProviderConfigs());
break;
case CMD_RESET_SIM_NETWORKS:
/* Defer this message until supplicant is started. */
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED;
deferMessage(message);
break;
case CMD_INSTALL_PACKET_FILTER:
mWifiNative.installPacketFilter(mInterfaceName, (byte[]) message.obj);
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(
(Long) message.obj, BaseWifiDiagnostics.CONNECTION_EVENT_FAILED);
break;
case CMD_GET_ALL_MATCHING_CONFIGS:
replyToMessage(message, message.what, new ArrayList<WifiConfiguration>());
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(TAG, "Error! empty message encountered");
break;
default:
loge("Error! unhandled message" + message);
break;
}
return HANDLED;
}
}
class InitialState extends State {
private void cleanup() {
// tell scanning service that scans are not available - about to kill the interface and
// supplicant
sendWifiScanAvailable(false);
// Tearing down the client interfaces below is going to stop our supplicant.
mWifiMonitor.stopAllMonitoring();
mWifiNative.registerStatusListener(mWifiNativeStatusListener);
// TODO: This teardown should ideally be handled in STOP_SUPPLICANT to be consistent
// with other mode managers. But, client mode is not yet controlled by
// WifiStateMachinePrime.
// TODO: Remove this big hammer. We cannot support concurrent interfaces with this!
mWifiNative.teardownAllInterfaces();
mInterfaceName = null;
}
@Override
public void enter() {
mWifiMonitor.stopAllMonitoring();
mWifiStateTracker.updateState(WifiStateTracker.INVALID);
cleanup();
sendMessage(CMD_START_SUPPLICANT);
setWifiState(WIFI_STATE_ENABLING);
}
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
switch (message.what) {
case CMD_START_SUPPLICANT:
mInterfaceName = mWifiNative.setupInterfaceForClientMode(false,
mWifiNativeInterfaceCallback);
if (TextUtils.isEmpty(mInterfaceName)) {
Log.e(TAG, "setup failure when creating client interface.");
setWifiState(WifiManager.WIFI_STATE_UNKNOWN);
transitionTo(mDefaultState);
break;
}
mIpClient = mFacade.makeIpClient(
mContext, mInterfaceName, new IpClientCallback());
mIpClient.setMulticastFilter(true);
if (mVerboseLoggingEnabled) log("Supplicant start successful");
registerForWifiMonitorEvents();
mWifiMonitor.startMonitoring(mInterfaceName);
mWifiInjector.getWifiLastResortWatchdog().clearAllFailureCounts();
setSupplicantLogLevel();
transitionTo(mSupplicantStartingState);
break;
case CMD_SET_OPERATIONAL_MODE:
if (message.arg1 == CONNECT_MODE) {
break;
} else {
return NOT_HANDLED;
}
case CMD_WIFINATIVE_FAILURE:
Log.e(TAG, "One of the native daemons died unexpectedly. Triggering recovery");
mWifiDiagnostics.captureBugReportData(
WifiDiagnostics.REPORT_REASON_WIFINATIVE_FAILURE);
mWifiInjector.getSelfRecovery().trigger(SelfRecovery.REASON_WIFINATIVE_FAILURE);
break;
default:
return NOT_HANDLED;
}
return HANDLED;
}
}
class SupplicantStartingState extends State {
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
switch(message.what) {
case WifiMonitor.SUP_CONNECTION_EVENT:
if (mVerboseLoggingEnabled) log("Supplicant connection established");
mSupplicantRestartCount = 0;
/* Reset the supplicant state to indicate the supplicant
* state is not known at this time */
mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE);
/* Initialize data structures */
mLastBssid = null;
mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID;
mLastSignalLevel = -1;
mWifiInfo.setMacAddress(mWifiNative.getMacAddress(mInterfaceName));
// Attempt to migrate data out of legacy store.
if (!mWifiConfigManager.migrateFromLegacyStore()) {
Log.e(TAG, "Failed to migrate from legacy config store");
}
sendSupplicantConnectionChangedBroadcast(true);
transitionTo(mSupplicantStartedState);
break;
case WifiMonitor.SUP_DISCONNECTION_EVENT:
// since control is split between WSM and WSMP - do not worry about supplicant
// dying if we haven't seen it up yet
break;
case CMD_START_SUPPLICANT:
case CMD_STOP_SUPPLICANT:
case CMD_STOP_AP:
default:
return NOT_HANDLED;
}
return HANDLED;
}
}
class SupplicantStartedState extends State {
@Override
public void enter() {
if (mVerboseLoggingEnabled) {
logd("SupplicantStartedState enter");
}
mWifiNative.setExternalSim(mInterfaceName, true);
setRandomMacOui();
mCountryCode.setReadyForChange(true);
if (mWifiConnectivityManager == null) {
synchronized (mWifiReqCountLock) {
mWifiConnectivityManager =
mWifiInjector.makeWifiConnectivityManager(mWifiInfo,
hasConnectionRequests());
mWifiConnectivityManager.setUntrustedConnectionAllowed(mUntrustedReqCount > 0);
mWifiConnectivityManager.handleScreenStateChanged(mScreenOn);
}
}
mWifiDiagnostics.startLogging(mVerboseLoggingEnabled);
mIsRunning = true;
updateBatteryWorkSource(null);
/**
* 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, mBluetoothConnectionActive);
// Check if there is a voice call on-going and set/reset the tx power limit
// appropriately.
if (mEnableVoiceCallSarTxPowerLimit) {
if (getTelephonyManager().isOffhook()) {
sendMessage(CMD_SELECT_TX_POWER_SCENARIO,
WifiNative.TX_POWER_SCENARIO_VOICE_CALL);
} else {
sendMessage(CMD_SELECT_TX_POWER_SCENARIO,
WifiNative.TX_POWER_SCENARIO_NORMAL);
}
}
// initialize network state
setNetworkDetailedState(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);
// Transitioning to Disconnected state will trigger a scan and subsequently AutoJoin
transitionTo(mDisconnectedState);
// Set the right suspend mode settings
mWifiNative.setSuspendOptimizations(mInterfaceName, mSuspendOptNeedsDisabled == 0
&& mUserWantsSuspendOpt.get());
mWifiNative.setPowerSave(mInterfaceName, true);
if (mP2pSupported) {
p2pSendMessage(WifiStateMachine.CMD_ENABLE_P2P);
}
// Disable wpa_supplicant from auto reconnecting.
mWifiNative.enableStaAutoReconnect(mInterfaceName, false);
// STA has higher priority over P2P
mWifiNative.setConcurrencyPriority(true);
}
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
switch(message.what) {
case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */
// first check if we are expecting a mode switch
if (mModeChange) {
logd("expecting a mode change, do not restart supplicant");
return HANDLED;
}
loge("Connection lost, restart supplicant");
handleSupplicantConnectionLoss(true);
handleNetworkDisconnect();
mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE);
sendMessage(CMD_START_SUPPLICANT);
transitionTo(mInitialState);
break;
case CMD_TARGET_BSSID:
// Trying to associate to this BSSID
if (message.obj != null) {
mTargetRoamBSSID = (String) message.obj;
}
break;
case CMD_GET_LINK_LAYER_STATS:
WifiLinkLayerStats stats = getWifiLinkLayerStats();
replyToMessage(message, message.what, stats);
break;
case CMD_RESET_SIM_NETWORKS:
log("resetting EAP-SIM/AKA/AKA' networks since SIM was changed");
mWifiConfigManager.resetSimNetworks(message.arg1 == 1);
break;
case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE:
mBluetoothConnectionActive = (message.arg1 !=
BluetoothAdapter.STATE_DISCONNECTED);
mWifiNative.setBluetoothCoexistenceScanMode(
mInterfaceName, mBluetoothConnectionActive);
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 CMD_SET_HIGH_PERF_MODE:
if (message.arg1 == 1) {
setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, false);
} else {
setSuspendOptimizationsNative(SUSPEND_DUE_TO_HIGH_PERF, true);
}
break;
case CMD_ENABLE_TDLS:
if (message.obj != null) {
String remoteAddress = (String) message.obj;
boolean enable = (message.arg1 == 1);
mWifiNative.startTdls(mInterfaceName, remoteAddress, enable);
}
break;
case WifiMonitor.ANQP_DONE_EVENT:
// TODO(zqiu): remove this when switch over to wificond for ANQP requests.
mPasspointManager.notifyANQPDone((AnqpEvent) message.obj);
break;
case CMD_STOP_IP_PACKET_OFFLOAD: {
int slot = message.arg1;
int ret = stopWifiIPPacketOffload(slot);
if (mNetworkAgent != null) {
mNetworkAgent.onPacketKeepaliveEvent(slot, ret);
}
break;
}
case WifiMonitor.RX_HS20_ANQP_ICON_EVENT:
// TODO(zqiu): remove this when switch over to wificond for icon requests.
mPasspointManager.notifyIconDone((IconEvent) message.obj);
break;
case WifiMonitor.HS20_REMEDIATION_EVENT:
// TODO(zqiu): remove this when switch over to wificond for WNM frames
// monitoring.
mPasspointManager.receivedWnmFrame((WnmData) message.obj);
break;
case CMD_CONFIG_ND_OFFLOAD:
final boolean enabled = (message.arg1 > 0);
mWifiNative.configureNeighborDiscoveryOffload(mInterfaceName, enabled);
break;
case CMD_ENABLE_WIFI_CONNECTIVITY_MANAGER:
mWifiConnectivityManager.enable(message.arg1 == 1 ? true : false);
break;
case CMD_SELECT_TX_POWER_SCENARIO:
int txPowerScenario = message.arg1;
logd("Setting Tx power scenario to " + txPowerScenario);
if (!mWifiNative.selectTxPowerScenario(txPowerScenario)) {
loge("Failed to set TX power scenario");
}
break;
default:
return NOT_HANDLED;
}
return HANDLED;
}
@Override
public void exit() {
setWifiState(WIFI_STATE_DISABLING);
// when client mode is moved to WSMP, cleanup will be done on exit. For now, cleanup is
// done when entering a mode.
// exiting supplicant started state is now only applicable to client mode
mWifiDiagnostics.stopLogging();
if (mP2pSupported) {
// we are not going to wait for a response - will still temporarily send the
// disable command until p2p can detect the interface up/down on its own.
p2pSendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ);
}
handleNetworkDisconnect();
mIsRunning = false;
updateBatteryWorkSource(null);
mNetworkInfo.setIsAvailable(false);
if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo);
mCountryCode.setReadyForChange(false);
setWifiState(WIFI_STATE_DISABLED);
}
}
class ScanModeState extends State {
private int mLastOperationMode;
@Override
public void enter() {
logd("entering ScanModeState");
mWifiStateTracker.updateState(WifiStateTracker.SCAN_MODE);
}
@Override
public void exit() {}
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
if (message.what == CMD_SET_OPERATIONAL_MODE) {
int operationMode = message.arg1;
if (operationMode == SCAN_ONLY_MODE
|| operationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) {
// nothing to do, stay here...
return HANDLED;
}
return NOT_HANDLED;
}
return NOT_HANDLED;
}
}
String smToString(Message message) {
return smToString(message.what);
}
String smToString(int what) {
String s = sSmToString.get(what);
if (s != null) {
return s;
}
switch (what) {
case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED:
s = "AsyncChannel.CMD_CHANNEL_HALF_CONNECTED";
break;
case AsyncChannel.CMD_CHANNEL_DISCONNECTED:
s = "AsyncChannel.CMD_CHANNEL_DISCONNECTED";
break;
case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST:
s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST";
break;
case WifiManager.DISABLE_NETWORK:
s = "WifiManager.DISABLE_NETWORK";
break;
case WifiManager.CONNECT_NETWORK:
s = "CONNECT_NETWORK";
break;
case WifiManager.SAVE_NETWORK:
s = "SAVE_NETWORK";
break;
case WifiManager.FORGET_NETWORK:
s = "FORGET_NETWORK";
break;
case WifiMonitor.SUP_CONNECTION_EVENT:
s = "SUP_CONNECTION_EVENT";
break;
case WifiMonitor.SUP_DISCONNECTION_EVENT:
s = "SUP_DISCONNECTION_EVENT";
break;
case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT:
s = "SUPPLICANT_STATE_CHANGE_EVENT";
break;
case WifiMonitor.AUTHENTICATION_FAILURE_EVENT:
s = "AUTHENTICATION_FAILURE_EVENT";
break;
case WifiMonitor.SUP_REQUEST_IDENTITY:
s = "SUP_REQUEST_IDENTITY";
break;
case WifiMonitor.NETWORK_CONNECTION_EVENT:
s = "NETWORK_CONNECTION_EVENT";
break;
case WifiMonitor.NETWORK_DISCONNECTION_EVENT:
s = "NETWORK_DISCONNECTION_EVENT";
break;
case WifiMonitor.ASSOCIATION_REJECTION_EVENT:
s = "ASSOCIATION_REJECTION_EVENT";
break;
case WifiMonitor.ANQP_DONE_EVENT:
s = "WifiMonitor.ANQP_DONE_EVENT";
break;
case WifiMonitor.RX_HS20_ANQP_ICON_EVENT:
s = "WifiMonitor.RX_HS20_ANQP_ICON_EVENT";
break;
case WifiMonitor.GAS_QUERY_DONE_EVENT:
s = "WifiMonitor.GAS_QUERY_DONE_EVENT";
break;
case WifiMonitor.HS20_REMEDIATION_EVENT:
s = "WifiMonitor.HS20_REMEDIATION_EVENT";
break;
case WifiMonitor.GAS_QUERY_START_EVENT:
s = "WifiMonitor.GAS_QUERY_START_EVENT";
break;
case WifiP2pServiceImpl.GROUP_CREATING_TIMED_OUT:
s = "GROUP_CREATING_TIMED_OUT";
break;
case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED:
s = "P2P_CONNECTION_CHANGED";
break;
case WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE:
s = "P2P.DISCONNECT_WIFI_RESPONSE";
break;
case WifiP2pServiceImpl.SET_MIRACAST_MODE:
s = "P2P.SET_MIRACAST_MODE";
break;
case WifiP2pServiceImpl.BLOCK_DISCOVERY:
s = "P2P.BLOCK_DISCOVERY";
break;
case WifiManager.RSSI_PKTCNT_FETCH:
s = "RSSI_PKTCNT_FETCH";
break;
default:
s = "what:" + Integer.toString(what);
break;
}
return s;
}
void registerConnected() {
if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) {
mWifiConfigManager.updateNetworkAfterConnect(mLastNetworkId);
// On connect, reset wifiScoreReport
mWifiScoreReport.reset();
// Notify PasspointManager of Passpoint network connected event.
WifiConfiguration currentNetwork = getCurrentWifiConfiguration();
if (currentNetwork != null && currentNetwork.isPasspoint()) {
mPasspointManager.onPasspointNetworkConnected(currentNetwork.FQDN);
}
}
}
void registerDisconnected() {
if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) {
mWifiConfigManager.updateNetworkAfterDisconnect(mLastNetworkId);
// Let's remove any ephemeral or passpoint networks on every disconnect.
mWifiConfigManager.removeAllEphemeralOrPasspointConfiguredNetworks();
}
}
/**
* Returns Wificonfiguration object correponding to the currently connected network, null if
* not connected.
*/
public WifiConfiguration getCurrentWifiConfiguration() {
if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) {
return null;
}
return mWifiConfigManager.getConfiguredNetwork(mLastNetworkId);
}
ScanResult getCurrentScanResult() {
WifiConfiguration config = getCurrentWifiConfiguration();
if (config == null) {
return null;
}
String BSSID = mWifiInfo.getBSSID();
if (BSSID == null) {
BSSID = mTargetRoamBSSID;
}
ScanDetailCache scanDetailCache =
mWifiConfigManager.getScanDetailCacheForNetwork(config.networkId);
if (scanDetailCache == null) {
return null;
}
return scanDetailCache.getScanResult(BSSID);
}
String getCurrentBSSID() {
return mLastBssid;
}
class ConnectModeState extends State {
@Override
public void enter() {
if (!mWifiNative.removeAllNetworks(mInterfaceName)) {
loge("Failed to remove networks on entering connect mode");
}
mScanRequestProxy.enableScanningForHiddenNetworks(true);
mWifiInfo.reset();
mWifiInfo.setSupplicantState(SupplicantState.DISCONNECTED);
sendWifiScanAvailable(true);
// Let the system know that wifi is available in client mode.
setWifiState(WIFI_STATE_ENABLED);
mWifiInjector.getWakeupController().reset();
mNetworkInfo.setIsAvailable(true);
if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo);
// initialize network state
setNetworkDetailedState(DetailedState.DISCONNECTED);
// Inform WifiConnectivityManager that Wifi is enabled
mWifiConnectivityManager.setWifiEnabled(true);
// Inform metrics that Wifi is Enabled (but not yet connected)
mWifiMetrics.setWifiState(WifiMetricsProto.WifiLog.WIFI_DISCONNECTED);
// Inform p2p service that wifi is up and ready when applicable
p2pSendMessage(WifiStateMachine.CMD_ENABLE_P2P);
}
@Override
public void exit() {
// Let the system know that wifi is not available since we are exiting client mode.
mNetworkInfo.setIsAvailable(false);
if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo);
// Inform WifiConnectivityManager that Wifi is disabled
mWifiConnectivityManager.setWifiEnabled(false);
// Inform metrics that Wifi is being disabled (Toggled, airplane enabled, etc)
mWifiMetrics.setWifiState(WifiMetricsProto.WifiLog.WIFI_DISABLED);
if (!mWifiNative.removeAllNetworks(mInterfaceName)) {
loge("Failed to remove networks on exiting connect mode");
}
mScanRequestProxy.enableScanningForHiddenNetworks(false);
// Do we want to optimize when we move from client mode to scan only mode.
mScanRequestProxy.clearScanResults();
mWifiInfo.reset();
mWifiInfo.setSupplicantState(SupplicantState.DISCONNECTED);
setWifiState(WIFI_STATE_DISABLED);
}
@Override
public boolean processMessage(Message message) {
WifiConfiguration config;
int netId;
boolean ok;
boolean didDisconnect;
String bssid;
String ssid;
NetworkUpdateResult result;
Set<Integer> removedNetworkIds;
int reasonCode;
boolean timedOut;
logStateAndMessage(message, this);
switch (message.what) {
case WifiMonitor.ASSOCIATION_REJECTION_EVENT:
mWifiDiagnostics.captureBugReportData(
WifiDiagnostics.REPORT_REASON_ASSOC_FAILURE);
didBlackListBSSID = false;
bssid = (String) message.obj;
timedOut = message.arg1 > 0;
reasonCode = message.arg2;
Log.d(TAG, "Assocation Rejection event: bssid=" + bssid + " reason code="
+ reasonCode + " timedOut=" + Boolean.toString(timedOut));
if (bssid == null || TextUtils.isEmpty(bssid)) {
// If BSSID is null, use the target roam BSSID
bssid = mTargetRoamBSSID;
}
if (bssid != null) {
// If we have a BSSID, tell configStore to black list it
didBlackListBSSID = mWifiConnectivityManager.trackBssid(bssid, false,
reasonCode);
}
mWifiConfigManager.updateNetworkSelectionStatus(mTargetNetworkId,
WifiConfiguration.NetworkSelectionStatus
.DISABLED_ASSOCIATION_REJECTION);
mWifiConfigManager.setRecentFailureAssociationStatus(mTargetNetworkId,
reasonCode);
mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT);
// If rejection occurred while Metrics is tracking a ConnnectionEvent, end it.
reportConnectionAttemptEnd(
WifiMetrics.ConnectionEvent.FAILURE_ASSOCIATION_REJECTION,
WifiMetricsProto.ConnectionEvent.HLF_NONE);
mWifiInjector.getWifiLastResortWatchdog()
.noteConnectionFailureAndTriggerIfNeeded(
getTargetSsid(), bssid,
WifiLastResortWatchdog.FAILURE_CODE_ASSOCIATION);
break;
case WifiMonitor.AUTHENTICATION_FAILURE_EVENT:
mWifiDiagnostics.captureBugReportData(
WifiDiagnostics.REPORT_REASON_AUTH_FAILURE);
mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT);
int disableReason = WifiConfiguration.NetworkSelectionStatus
.DISABLED_AUTHENTICATION_FAILURE;
reasonCode = message.arg1;
// Check if this is a permanent wrong password failure.
if (isPermanentWrongPasswordFailure(mTargetNetworkId, reasonCode)) {
disableReason = WifiConfiguration.NetworkSelectionStatus
.DISABLED_BY_WRONG_PASSWORD;
WifiConfiguration targetedNetwork =
mWifiConfigManager.getConfiguredNetwork(mTargetNetworkId);
if (targetedNetwork != null) {
mWrongPasswordNotifier.onWrongPasswordError(
targetedNetwork.SSID);
}
} else if (reasonCode == WifiManager.ERROR_AUTH_FAILURE_EAP_FAILURE) {
handleEapAuthFailure(mTargetNetworkId, message.arg2);
}
mWifiConfigManager.updateNetworkSelectionStatus(
mTargetNetworkId, disableReason);
mWifiConfigManager.clearRecentFailureReason(mTargetNetworkId);
//If failure occurred while Metrics is tracking a ConnnectionEvent, end it.
reportConnectionAttemptEnd(
WifiMetrics.ConnectionEvent.FAILURE_AUTHENTICATION_FAILURE,
WifiMetricsProto.ConnectionEvent.HLF_NONE);
mWifiInjector.getWifiLastResortWatchdog()
.noteConnectionFailureAndTriggerIfNeeded(
getTargetSsid(), mTargetRoamBSSID,
WifiLastResortWatchdog.FAILURE_CODE_AUTHENTICATION);
break;
case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT:
SupplicantState state = handleSupplicantStateChange(message);
// A driver/firmware hang can now put the interface in a down state.
// We detect the interface going down and recover from it
if (!SupplicantState.isDriverActive(state) && !mModeChange
&& !mEnableConnectedMacRandomization.get()) {
if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) {
handleNetworkDisconnect();
}
log("Detected an interface down, restart driver");
// Rely on the fact that this will force us into killing supplicant and then
// restart supplicant from a clean state.
sendMessage(CMD_START_SUPPLICANT);
transitionTo(mInitialState);
break;
}
// 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 mNetworkInfo says we are not
// disconnected, we need to handle a disconnection
if (state == SupplicantState.DISCONNECTED
&& mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) {
if (mVerboseLoggingEnabled) {
log("Missed CTRL-EVENT-DISCONNECTED, disconnect");
}
handleNetworkDisconnect();
transitionTo(mDisconnectedState);
}
// If we have COMPLETED a connection to a BSSID, start doing
// DNAv4/DNAv6 -style probing for on-link neighbors of
// interest (e.g. routers); harmless if none are configured.
if (state == SupplicantState.COMPLETED) {
mIpClient.confirmConfiguration();
}
break;
case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST:
if (message.arg1 == 1) {
mWifiMetrics.logStaEvent(StaEvent.TYPE_FRAMEWORK_DISCONNECT,
StaEvent.DISCONNECT_P2P_DISCONNECT_WIFI_REQUEST);
mWifiNative.disconnect(mInterfaceName);
mTemporarilyDisconnectWifi = true;
} else {
mWifiNative.reconnect(mInterfaceName);
mTemporarilyDisconnectWifi = false;
}
break;
case CMD_REMOVE_NETWORK:
if (!deleteNetworkConfigAndSendReply(message, false)) {
// failed to remove the config and caller was notified
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
break;
}
// we successfully deleted the network config
netId = message.arg1;
if (netId == mTargetNetworkId || netId == mLastNetworkId) {
// Disconnect and let autojoin reselect a new network
sendMessage(CMD_DISCONNECT);
}
break;
case CMD_ENABLE_NETWORK:
boolean disableOthers = message.arg2 == 1;
netId = message.arg1;
if (disableOthers) {
// If the app has all the necessary permissions, this will trigger a connect
// attempt.
ok = connectToUserSelectNetwork(netId, message.sendingUid, false);
} else {
ok = mWifiConfigManager.enableNetwork(netId, false, message.sendingUid);
}
if (!ok) {
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
}
replyToMessage(message, message.what, ok ? SUCCESS : FAILURE);
break;
case WifiManager.DISABLE_NETWORK:
netId = message.arg1;
if (mWifiConfigManager.disableNetwork(netId, message.sendingUid)) {
replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED);
if (netId == mTargetNetworkId || netId == mLastNetworkId) {
// Disconnect and let autojoin reselect a new network
sendMessage(CMD_DISCONNECT);
}
} else {
loge("Failed to disable network");
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED,
WifiManager.ERROR);
}
break;
case CMD_DISABLE_EPHEMERAL_NETWORK:
config = mWifiConfigManager.disableEphemeralNetwork((String)message.obj);
if (config != null) {
if (config.networkId == mTargetNetworkId
|| config.networkId == mLastNetworkId) {
// Disconnect and let autojoin reselect a new network
sendMessage(CMD_DISCONNECT);
}
}
break;
case WifiMonitor.SUP_REQUEST_IDENTITY:
netId = message.arg2;
boolean identitySent = false;
// For SIM & AKA/AKA' EAP method Only, get identity from ICC
if (targetWificonfiguration != null
&& targetWificonfiguration.networkId == netId
&& TelephonyUtil.isSimConfig(targetWificonfiguration)) {
// Pair<identity, encrypted identity>
Pair<String, String> identityPair =
TelephonyUtil.getSimIdentity(getTelephonyManager(),
new TelephonyUtil(), targetWificonfiguration);
if (identityPair != null && identityPair.first != null) {
mWifiNative.simIdentityResponse(mInterfaceName, netId,
identityPair.first, identityPair.second);
identitySent = true;
} else {
Log.e(TAG, "Unable to retrieve identity from Telephony");
}
}
if (!identitySent) {
// Supplicant lacks credentials to connect to that network, hence black list
ssid = (String) message.obj;
if (targetWificonfiguration != null && ssid != null
&& targetWificonfiguration.SSID != null
&& targetWificonfiguration.SSID.equals("\"" + ssid + "\"")) {
mWifiConfigManager.updateNetworkSelectionStatus(
targetWificonfiguration.networkId,
WifiConfiguration.NetworkSelectionStatus
.DISABLED_AUTHENTICATION_NO_CREDENTIALS);
}
mWifiMetrics.logStaEvent(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_GET_MATCHING_CONFIG:
replyToMessage(message, message.what,
mPasspointManager.getMatchingWifiConfig((ScanResult) message.obj));
break;
case CMD_GET_MATCHING_OSU_PROVIDERS:
replyToMessage(message, message.what,
mPasspointManager.getMatchingOsuProviders((ScanResult) message.obj));
break;
case CMD_START_SUBSCRIPTION_PROVISIONING:
IProvisioningCallback callback = (IProvisioningCallback) message.obj;
OsuProvider provider =
(OsuProvider) message.getData().getParcelable(EXTRA_OSU_PROVIDER);
int res = mPasspointManager.startSubscriptionProvisioning(
message.arg1, provider, callback) ? 1 : 0;
replyToMessage(message, message.what, res);
break;
case CMD_RECONNECT:
WorkSource workSource = (WorkSource) message.obj;
mWifiConnectivityManager.forceConnectivityScan(workSource);
break;
case CMD_REASSOCIATE:
lastConnectAttemptTimestamp = mClock.getWallClockMillis();
mWifiNative.reassociate(mInterfaceName);
break;
case CMD_RELOAD_TLS_AND_RECONNECT:
if (mWifiConfigManager.needsUnlockedKeyStore()) {
logd("Reconnecting to give a chance to un-connected TLS networks");
mWifiNative.disconnect(mInterfaceName);
lastConnectAttemptTimestamp = mClock.getWallClockMillis();
mWifiNative.reconnect(mInterfaceName);
}
break;
case CMD_START_ROAM:
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD;
return HANDLED;
case CMD_START_CONNECT:
/* connect command coming from auto-join */
netId = message.arg1;
int uid = message.arg2;
bssid = (String) message.obj;
synchronized (mWifiReqCountLock) {
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;
}
}
}
config = mWifiConfigManager.getConfiguredNetworkWithoutMasking(netId);
logd("CMD_START_CONNECT sup state "
+ mSupplicantStateTracker.getSupplicantStateName()
+ " my state " + getCurrentState().getName()
+ " nid=" + Integer.toString(netId)
+ " roam=" + Boolean.toString(mIsAutoRoaming));
if (config == null) {
loge("CMD_START_CONNECT and no config, bail out...");
break;
}
mTargetNetworkId = netId;
setTargetBssid(config, bssid);
if (mEnableConnectedMacRandomization.get()) {
configureRandomizedMacAddress(config);
}
String currentMacAddress = mWifiNative.getMacAddress(mInterfaceName);
mWifiInfo.setMacAddress(currentMacAddress);
Log.i(TAG, "Connecting with " + currentMacAddress + " as the mac address");
reportConnectionAttemptStart(config, mTargetRoamBSSID,
WifiMetricsProto.ConnectionEvent.ROAM_UNRELATED);
if (mWifiNative.connectToNetwork(mInterfaceName, config)) {
mWifiMetrics.logStaEvent(StaEvent.TYPE_CMD_START_CONNECT, config);
lastConnectAttemptTimestamp = mClock.getWallClockMillis();
targetWificonfiguration = config;
mIsAutoRoaming = false;
if (getCurrentState() != mDisconnectedState) {
transitionTo(mDisconnectingState);
}
} else {
loge("CMD_START_CONNECT Failed to start connection to network " + config);
reportConnectionAttemptEnd(
WifiMetrics.ConnectionEvent.FAILURE_CONNECT_NETWORK_FAILED,
WifiMetricsProto.ConnectionEvent.HLF_NONE);
replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED,
WifiManager.ERROR);
break;
}
break;
case CMD_REMOVE_APP_CONFIGURATIONS:
removedNetworkIds =
mWifiConfigManager.removeNetworksForApp((ApplicationInfo) message.obj);
if (removedNetworkIds.contains(mTargetNetworkId) ||
removedNetworkIds.contains(mLastNetworkId)) {
// Disconnect and let autojoin reselect a new network.
sendMessage(CMD_DISCONNECT);
}
break;
case CMD_REMOVE_USER_CONFIGURATIONS:
removedNetworkIds =
mWifiConfigManager.removeNetworksForUser((Integer) message.arg1);
if (removedNetworkIds.contains(mTargetNetworkId) ||
removedNetworkIds.contains(mLastNetworkId)) {
// Disconnect and let autojoin reselect a new network.
sendMessage(CMD_DISCONNECT);
}
break;
case WifiManager.CONNECT_NETWORK:
/**
* The connect message can contain a network id passed as arg1 on message or
* or a config passed as obj on message.
* For a new network, a config is passed to create and connect.
* For an existing network, a network id is passed
*/
netId = message.arg1;
config = (WifiConfiguration) message.obj;
boolean hasCredentialChanged = false;
// New network addition.
if (config != null) {
result = mWifiConfigManager.addOrUpdateNetwork(config, message.sendingUid);
if (!result.isSuccess()) {
loge("CONNECT_NETWORK adding/updating config=" + config + " failed");
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED,
WifiManager.ERROR);
break;
}
netId = result.getNetworkId();
hasCredentialChanged = result.hasCredentialChanged();
}
if (!connectToUserSelectNetwork(
netId, message.sendingUid, hasCredentialChanged)) {
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED,
WifiManager.NOT_AUTHORIZED);
break;
}
mWifiMetrics.logStaEvent(StaEvent.TYPE_CONNECT_NETWORK, config);
broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config);
replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED);
break;
case WifiManager.SAVE_NETWORK:
result = saveNetworkConfigAndSendReply(message);
netId = result.getNetworkId();
if (result.isSuccess() && mWifiInfo.getNetworkId() == netId) {
if (result.hasCredentialChanged()) {
config = (WifiConfiguration) message.obj;
// The network credentials changed and we're connected to this network,
// start a new connection with the updated credentials.
logi("SAVE_NETWORK credential changed for config=" + config.configKey()
+ ", Reconnecting.");
startConnectToNetwork(netId, message.sendingUid, SUPPLICANT_BSSID_ANY);
} else {
if (result.hasProxyChanged()) {
log("Reconfiguring proxy on connection");
mIpClient.setHttpProxy(
getCurrentWifiConfiguration().getHttpProxy());
}
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");
// TODO(b/36576642): clear addresses and disable IPv6
// to simplify obtainingIpState.
transitionTo(mObtainingIpState);
}
}
}
break;
case WifiManager.FORGET_NETWORK:
if (!deleteNetworkConfigAndSendReply(message, true)) {
// Caller was notified of failure, nothing else to do
break;
}
// the network was deleted
netId = message.arg1;
if (netId == mTargetNetworkId || netId == mLastNetworkId) {
// Disconnect and let autojoin reselect a new network
sendMessage(CMD_DISCONNECT);
}
break;
case CMD_ASSOCIATED_BSSID:
// 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(scanDetailCache.getScanDetail(
someBssid));
}
}
return NOT_HANDLED;
case WifiMonitor.NETWORK_CONNECTION_EVENT:
if (mVerboseLoggingEnabled) log("Network connection established");
mLastNetworkId = message.arg1;
mWifiConfigManager.clearRecentFailureReason(mLastNetworkId);
mLastBssid = (String) message.obj;
reasonCode = message.arg2;
// TODO: This check should not be needed after WifiStateMachinePrime 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.
config = getCurrentWifiConfiguration();
if (config != null) {
mWifiInfo.setBSSID(mLastBssid);
mWifiInfo.setNetworkId(mLastNetworkId);
ScanDetailCache scanDetailCache =
mWifiConfigManager.getScanDetailCacheForNetwork(config.networkId);
if (scanDetailCache != null && mLastBssid != null) {
ScanResult scanResult = scanDetailCache.getScanResult(mLastBssid);
if (scanResult != null) {
mWifiInfo.setFrequency(scanResult.frequency);
}
}
mWifiConnectivityManager.trackBssid(mLastBssid, true, reasonCode);
// We need to get the updated pseudonym from supplicant for EAP-SIM/AKA/AKA'
if (config.enterpriseConfig != null
&& TelephonyUtil.isSimEapMethod(
config.enterpriseConfig.getEapMethod())) {
String anonymousIdentity =
mWifiNative.getEapAnonymousIdentity(mInterfaceName);
if (anonymousIdentity != null) {
config.enterpriseConfig.setAnonymousIdentity(anonymousIdentity);
} else {
Log.d(TAG, "Failed to get updated anonymous identity"
+ " from supplicant, reset it in WifiConfiguration.");
config.enterpriseConfig.setAnonymousIdentity(null);
}
mWifiConfigManager.addOrUpdateNetwork(config, Process.WIFI_UID);
}
sendNetworkStateChangeBroadcast(mLastBssid);
transitionTo(mObtainingIpState);
} else {
logw("Connected to unknown networkId " + mLastNetworkId
+ ", disconnecting...");
sendMessage(CMD_DISCONNECT);
}
break;
case WifiMonitor.NETWORK_DISCONNECTION_EVENT:
// Calling handleNetworkDisconnect here is redundant because we might already
// have called it when leaving L2ConnectedState to go to disconnecting state
// or thru other path
// We should normally check the mWifiInfo or mLastNetworkId so as to check
// if they are valid, and only in this case call handleNEtworkDisconnect,
// TODO: this should be fixed for a L MR release
// The side effect of calling handleNetworkDisconnect twice is that a bunch of
// idempotent commands are executed twice (stopping Dhcp, enabling the SPS mode
// at the chip etc...
if (mVerboseLoggingEnabled) log("ConnectModeState: Network connection lost ");
handleNetworkDisconnect();
transitionTo(mDisconnectedState);
break;
case CMD_QUERY_OSU_ICON:
mPasspointManager.queryPasspointIcon(
((Bundle) message.obj).getLong(EXTRA_OSU_ICON_QUERY_BSSID),
((Bundle) message.obj).getString(EXTRA_OSU_ICON_QUERY_FILENAME));
break;
case CMD_MATCH_PROVIDER_NETWORK:
// TODO(b/31065385): Passpoint config management.
replyToMessage(message, message.what, 0);
break;
case CMD_ADD_OR_UPDATE_PASSPOINT_CONFIG:
PasspointConfiguration passpointConfig = (PasspointConfiguration) message.obj;
if (mPasspointManager.addOrUpdateProvider(passpointConfig, message.arg1)) {
String fqdn = passpointConfig.getHomeSp().getFqdn();
if (isProviderOwnedNetwork(mTargetNetworkId, fqdn)
|| isProviderOwnedNetwork(mLastNetworkId, fqdn)) {
logd("Disconnect from current network since its provider is updated");
sendMessage(CMD_DISCONNECT);
}
replyToMessage(message, message.what, SUCCESS);
} else {
replyToMessage(message, message.what, FAILURE);
}
break;
case CMD_REMOVE_PASSPOINT_CONFIG:
String fqdn = (String) message.obj;
if (mPasspointManager.removeProvider(fqdn)) {
if (isProviderOwnedNetwork(mTargetNetworkId, fqdn)
|| isProviderOwnedNetwork(mLastNetworkId, fqdn)) {
logd("Disconnect from current network since its provider is removed");
sendMessage(CMD_DISCONNECT);
}
replyToMessage(message, message.what, SUCCESS);
} else {
replyToMessage(message, message.what, FAILURE);
}
break;
case CMD_ENABLE_P2P:
p2pSendMessage(WifiStateMachine.CMD_ENABLE_P2P);
break;
case CMD_GET_ALL_MATCHING_CONFIGS:
replyToMessage(message, message.what,
mPasspointManager.getAllMatchingWifiConfigs((ScanResult) message.obj));
break;
default:
return NOT_HANDLED;
}
return HANDLED;
}
}
public void updateCapabilities() {
updateCapabilities(getCurrentWifiConfiguration());
}
private void updateCapabilities(WifiConfiguration config) {
final NetworkCapabilities result = new NetworkCapabilities(mDfltNetworkCapabilities);
if (mWifiInfo != null && !mWifiInfo.isEphemeral()) {
result.addCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED);
} else {
result.removeCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED);
}
if (mWifiInfo != null && !WifiConfiguration.isMetered(config, mWifiInfo)) {
result.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
} else {
result.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED);
}
if (mWifiInfo != null && mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI) {
result.setSignalStrength(mWifiInfo.getRssi());
} else {
result.setSignalStrength(NetworkCapabilities.SIGNAL_STRENGTH_UNSPECIFIED);
}
if (mNetworkAgent != null) {
mNetworkAgent.sendNetworkCapabilities(result);
}
}
/**
* Checks if the given network |networkdId| is provided by the given Passpoint provider with
* |providerFqdn|.
*
* @param networkId The ID of the network to check
* @param providerFqdn The FQDN of the Passpoint provider
* @return true if the given network is provided by the given Passpoint provider
*/
private boolean isProviderOwnedNetwork(int networkId, String providerFqdn) {
if (networkId == WifiConfiguration.INVALID_NETWORK_ID) {
return false;
}
WifiConfiguration config = mWifiConfigManager.getConfiguredNetwork(networkId);
if (config == null) {
return false;
}
return TextUtils.equals(config.FQDN, providerFqdn);
}
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) {
getTelephonyManager().resetCarrierKeysForImsiEncryption();
}
break;
default:
// Do Nothing
}
}
}
private class WifiNetworkAgent extends NetworkAgent {
public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni,
NetworkCapabilities nc, LinkProperties lp, int score, NetworkMisc misc) {
super(l, c, TAG, ni, nc, lp, score, misc);
}
private int mLastNetworkStatus = -1; // To detect when the status really changes
@Override
protected void unwanted() {
// Ignore if we're not the current networkAgent.
if (this != mNetworkAgent) return;
if (mVerboseLoggingEnabled) {
log("WifiNetworkAgent -> Wifi unwanted score " + Integer.toString(mWifiInfo.score));
}
unwantedNetwork(NETWORK_STATUS_UNWANTED_DISCONNECT);
}
@Override
protected void networkStatus(int status, String redirectUrl) {
if (this != mNetworkAgent) return;
if (status == mLastNetworkStatus) return;
mLastNetworkStatus = status;
if (status == NetworkAgent.INVALID_NETWORK) {
if (mVerboseLoggingEnabled) {
log("WifiNetworkAgent -> Wifi networkStatus invalid, score="
+ Integer.toString(mWifiInfo.score));
}
unwantedNetwork(NETWORK_STATUS_UNWANTED_VALIDATION_FAILED);
} else if (status == NetworkAgent.VALID_NETWORK) {
if (mVerboseLoggingEnabled) {
log("WifiNetworkAgent -> Wifi networkStatus valid, score= "
+ Integer.toString(mWifiInfo.score));
}
mWifiMetrics.logStaEvent(StaEvent.TYPE_NETWORK_AGENT_VALID_NETWORK);
doNetworkStatus(status);
}
}
@Override
protected void saveAcceptUnvalidated(boolean accept) {
if (this != mNetworkAgent) return;
WifiStateMachine.this.sendMessage(CMD_ACCEPT_UNVALIDATED, accept ? 1 : 0);
}
@Override
protected void startPacketKeepalive(Message msg) {
WifiStateMachine.this.sendMessage(
CMD_START_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj);
}
@Override
protected void stopPacketKeepalive(Message msg) {
WifiStateMachine.this.sendMessage(
CMD_STOP_IP_PACKET_OFFLOAD, msg.arg1, msg.arg2, msg.obj);
}
@Override
protected void setSignalStrengthThresholds(int[] thresholds) {
// 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.
log("Received signal strength thresholds: " + Arrays.toString(thresholds));
if (thresholds.length == 0) {
WifiStateMachine.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(TAG, "Illegal value " + val + " for RSSI thresholds: "
+ Arrays.toString(rssiVals));
WifiStateMachine.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;
WifiStateMachine.this.sendMessage(CMD_START_RSSI_MONITORING_OFFLOAD,
mWifiInfo.getRssi());
}
@Override
protected void preventAutomaticReconnect() {
if (this != mNetworkAgent) return;
unwantedNetwork(NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN);
}
}
void unwantedNetwork(int reason) {
sendMessage(CMD_UNWANTED_NETWORK, reason);
}
void doNetworkStatus(int status) {
sendMessage(CMD_NETWORK_STATUS, status);
}
// rfc4186 & rfc4187:
// create Permanent Identity base on IMSI,
// identity = usernam@realm
// with username = prefix | IMSI
// and realm is derived MMC/MNC tuple according 3GGP spec(TS23.003)
private String buildIdentity(int eapMethod, String imsi, String mccMnc) {
String mcc;
String mnc;
String prefix;
if (imsi == null || imsi.isEmpty())
return "";
if (eapMethod == WifiEnterpriseConfig.Eap.SIM)
prefix = "1";
else if (eapMethod == WifiEnterpriseConfig.Eap.AKA)
prefix = "0";
else if (eapMethod == WifiEnterpriseConfig.Eap.AKA_PRIME)
prefix = "6";
else // not a valide EapMethod
return "";
/* extract mcc & mnc from mccMnc */
if (mccMnc != null && !mccMnc.isEmpty()) {
mcc = mccMnc.substring(0, 3);
mnc = mccMnc.substring(3);
if (mnc.length() == 2)
mnc = "0" + mnc;
} else {
// extract mcc & mnc from IMSI, assume mnc size is 3
mcc = imsi.substring(0, 3);
mnc = imsi.substring(3, 6);
}
return prefix + imsi + "@wlan.mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org";
}
class L2ConnectedState extends State {
class RssiEventHandler implements WifiNative.WifiRssiEventHandler {
@Override
public void onRssiThresholdBreached(byte curRssi) {
if (mVerboseLoggingEnabled) {
Log.e(TAG, "onRssiThresholdBreach event. Cur Rssi = " + curRssi);
}
sendMessage(CMD_RSSI_THRESHOLD_BREACHED, curRssi);
}
}
RssiEventHandler mRssiEventHandler = new RssiEventHandler();
@Override
public void enter() {
mRssiPollToken++;
if (mEnableRssiPolling) {
sendMessage(CMD_RSSI_POLL, mRssiPollToken, 0);
}
if (mNetworkAgent != null) {
loge("Have NetworkAgent when entering L2Connected");
setNetworkDetailedState(DetailedState.DISCONNECTED);
}
setNetworkDetailedState(DetailedState.CONNECTING);
mNetworkAgent = new WifiNetworkAgent(getHandler().getLooper(), mContext,
"WifiNetworkAgent", mNetworkInfo, mNetworkCapabilitiesFilter,
mLinkProperties, 60, mNetworkMisc);
// 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");
mCountryCode.setReadyForChange(false);
mWifiMetrics.setWifiState(WifiMetricsProto.WifiLog.WIFI_ASSOCIATED);
}
@Override
public void exit() {
mIpClient.stop();
// This is handled by receiving a NETWORK_DISCONNECTION_EVENT in ConnectModeState
// 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);
}
}
if (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) {
handleNetworkDisconnect();
}
mCountryCode.setReadyForChange(true);
mWifiMetrics.setWifiState(WifiMetricsProto.WifiLog.WIFI_DISCONNECTED);
mWifiStateTracker.updateState(WifiStateTracker.DISCONNECTED);
}
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
switch (message.what) {
case DhcpClient.CMD_PRE_DHCP_ACTION:
handlePreDhcpSetup();
break;
case DhcpClient.CMD_PRE_DHCP_ACTION_COMPLETE:
mIpClient.completedPreDhcpAction();
break;
case DhcpClient.CMD_POST_DHCP_ACTION:
handlePostDhcpSetup();
// We advance to mConnectedState because IpClient will also send a
// CMD_IPV4_PROVISIONING_SUCCESS message, which calls handleIPv4Success(),
// which calls updateLinkProperties, which then sends
// CMD_IP_CONFIGURATION_SUCCESSFUL.
//
// In the event of failure, we transition to mDisconnectingState
// similarly--via messages sent back from IpClient.
break;
case CMD_IPV4_PROVISIONING_SUCCESS: {
handleIPv4Success((DhcpResults) message.obj);
sendNetworkStateChangeBroadcast(mLastBssid);
break;
}
case CMD_IPV4_PROVISIONING_FAILURE: {
handleIPv4Failure();
break;
}
case CMD_IP_CONFIGURATION_SUCCESSFUL:
handleSuccessfulIpConfiguration();
reportConnectionAttemptEnd(
WifiMetrics.ConnectionEvent.FAILURE_NONE,
WifiMetricsProto.ConnectionEvent.HLF_NONE);
if (getCurrentWifiConfiguration() == null) {
// The current config may have been removed while we were connecting,
// trigger a disconnect to clear up state.
mWifiNative.disconnect(mInterfaceName);
transitionTo(mDisconnectingState);
} else {
sendConnectedState();
transitionTo(mConnectedState);
}
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);
transitionTo(mDisconnectingState);
break;
case CMD_IP_REACHABILITY_LOST:
if (mVerboseLoggingEnabled && message.obj != null) log((String) message.obj);
if (mIpReachabilityDisconnectEnabled) {
handleIpReachabilityLost();
transitionTo(mDisconnectingState);
} else {
logd("CMD_IP_REACHABILITY_LOST but disconnect disabled -- ignore");
}
break;
case CMD_DISCONNECT:
mWifiMetrics.logStaEvent(StaEvent.TYPE_FRAMEWORK_DISCONNECT,
StaEvent.DISCONNECT_GENERIC);
mWifiNative.disconnect(mInterfaceName);
transitionTo(mDisconnectingState);
break;
case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST:
if (message.arg1 == 1) {
mWifiMetrics.logStaEvent(StaEvent.TYPE_FRAMEWORK_DISCONNECT,
StaEvent.DISCONNECT_P2P_DISCONNECT_WIFI_REQUEST);
mWifiNative.disconnect(mInterfaceName);
mTemporarilyDisconnectWifi = true;
transitionTo(mDisconnectingState);
}
break;
/* Ignore connection to same network */
case WifiManager.CONNECT_NETWORK:
int netId = message.arg1;
if (mWifiInfo.getNetworkId() == netId) {
replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED);
break;
}
return NOT_HANDLED;
case WifiMonitor.NETWORK_CONNECTION_EVENT:
mWifiInfo.setBSSID((String) message.obj);
mLastNetworkId = message.arg1;
mWifiInfo.setNetworkId(mLastNetworkId);
if(!mLastBssid.equals(message.obj)) {
mLastBssid = (String) message.obj;
sendNetworkStateChangeBroadcast(mLastBssid);
}
break;
case CMD_RSSI_POLL:
if (message.arg1 == mRssiPollToken) {
if (mEnableChipWakeUpWhenAssociated) {
if (mVerboseLoggingEnabled) {
log(" get link layer stats " + mWifiLinkLayerStatsSupported);
}
WifiLinkLayerStats stats = getWifiLinkLayerStats();
if (stats != null) {
// Sanity check the results provided by driver
if (mWifiInfo.getRssi() != WifiInfo.INVALID_RSSI
&& (stats.rssi_mgmt == 0
|| stats.beacon_rx == 0)) {
stats = null;
}
}
// Get Info and continue polling
fetchRssiLinkSpeedAndFrequencyNative();
// Send the update score to network agent.
mWifiScoreReport.calculateAndReportScore(
mWifiInfo, mNetworkAgent, mWifiMetrics);
}
sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, mRssiPollToken, 0),
mPollRssiIntervalMsecs);
if (mVerboseLoggingEnabled) sendRssiChangeBroadcast(mWifiInfo.getRssi());
} else {
// Polling has completed
}
break;
case CMD_ENABLE_RSSI_POLL:
cleanWifiScore();
if (mEnableRssiPollWhenAssociated) {
mEnableRssiPolling = (message.arg1 == 1);
} else {
mEnableRssiPolling = false;
}
mRssiPollToken++;
if (mEnableRssiPolling) {
// First poll
fetchRssiLinkSpeedAndFrequencyNative();
sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, mRssiPollToken, 0),
mPollRssiIntervalMsecs);
}
break;
case WifiManager.RSSI_PKTCNT_FETCH:
RssiPacketCountInfo info = new RssiPacketCountInfo();
fetchRssiLinkSpeedAndFrequencyNative();
info.rssi = mWifiInfo.getRssi();
WifiNative.TxPacketCounters counters =
mWifiNative.getTxPacketCounters(mInterfaceName);
if (counters != null) {
info.txgood = counters.txSucceeded;
info.txbad = counters.txFailed;
replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info);
} else {
replyToMessage(message,
WifiManager.RSSI_PKTCNT_FETCH_FAILED, WifiManager.ERROR);
}
break;
case CMD_ASSOCIATED_BSSID:
if ((String) message.obj == null) {
logw("Associated command w/o BSSID");
break;
}
mLastBssid = (String) message.obj;
if (mLastBssid != null && (mWifiInfo.getBSSID() == null
|| !mLastBssid.equals(mWifiInfo.getBSSID()))) {
mWifiInfo.setBSSID(mLastBssid);
WifiConfiguration config = getCurrentWifiConfiguration();
if (config != null) {
ScanDetailCache scanDetailCache = mWifiConfigManager
.getScanDetailCacheForNetwork(config.networkId);
if (scanDetailCache != null) {
ScanResult scanResult = scanDetailCache.getScanResult(mLastBssid);
if (scanResult != null) {
mWifiInfo.setFrequency(scanResult.frequency);
}
}
}
sendNetworkStateChangeBroadcast(mLastBssid);
}
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 == 0 // sim was removed
&& mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) {
WifiConfiguration config =
mWifiConfigManager.getConfiguredNetwork(mLastNetworkId);
if (TelephonyUtil.isSimConfig(config)) {
mWifiMetrics.logStaEvent(StaEvent.TYPE_FRAMEWORK_DISCONNECT,
StaEvent.DISCONNECT_RESET_SIM_NETWORKS);
mWifiNative.disconnect(mInterfaceName);
transitionTo(mDisconnectingState);
}
}
/* allow parent state to reset data for other networks */
return NOT_HANDLED;
default:
return NOT_HANDLED;
}
return HANDLED;
}
}
class ObtainingIpState extends State {
@Override
public void enter() {
final WifiConfiguration currentConfig = getCurrentWifiConfiguration();
final boolean isUsingStaticIp =
(currentConfig.getIpAssignment() == IpConfiguration.IpAssignment.STATIC);
if (mVerboseLoggingEnabled) {
final String key = currentConfig.configKey();
log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId)
+ " " + key + " "
+ " roam=" + mIsAutoRoaming
+ " static=" + isUsingStaticIp);
}
// Send event to CM & network change broadcast
setNetworkDetailedState(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.
//
// TODO: Only ever enter this state the first time we connect to a
// network, never on switching between static configuration and
// DHCP. 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.
stopIpClient();
mIpClient.setHttpProxy(currentConfig.getHttpProxy());
if (!TextUtils.isEmpty(mTcpBufferSizes)) {
mIpClient.setTcpBufferSizes(mTcpBufferSizes);
}
final IpClient.ProvisioningConfiguration prov;
if (!isUsingStaticIp) {
prov = IpClient.buildProvisioningConfiguration()
.withPreDhcpAction()
.withApfCapabilities(mWifiNative.getApfCapabilities(mInterfaceName))
.withNetwork(getCurrentNetwork())
.withDisplayName(currentConfig.SSID)
.withRandomMacAddress()
.build();
} else {
StaticIpConfiguration staticIpConfig = currentConfig.getStaticIpConfiguration();
prov = IpClient.buildProvisioningConfiguration()
.withStaticConfiguration(staticIpConfig)
.withApfCapabilities(mWifiNative.getApfCapabilities(mInterfaceName))
.withNetwork(getCurrentNetwork())
.withDisplayName(currentConfig.SSID)
.build();
}
mIpClient.startProvisioning(prov);
// Get Link layer stats so as we get fresh tx packet counters
getWifiLinkLayerStats();
}
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
switch(message.what) {
case CMD_START_CONNECT:
case CMD_START_ROAM:
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD;
break;
case WifiManager.SAVE_NETWORK:
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED;
deferMessage(message);
break;
case WifiMonitor.NETWORK_DISCONNECTION_EVENT:
reportConnectionAttemptEnd(
WifiMetrics.ConnectionEvent.FAILURE_NETWORK_DISCONNECTION,
WifiMetricsProto.ConnectionEvent.HLF_NONE);
return NOT_HANDLED;
case CMD_SET_HIGH_PERF_MODE:
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DEFERRED;
deferMessage(message);
break;
default:
return NOT_HANDLED;
}
return HANDLED;
}
}
/**
* Helper function to check if we need to invoke
* {@link NetworkAgent#explicitlySelected(boolean)} to indicate that we connected to a network
* which the user just chose
* (i.e less than {@link #LAST_SELECTED_NETWORK_EXPIRATION_AGE_MILLIS) before).
*/
@VisibleForTesting
public boolean shouldEvaluateWhetherToSendExplicitlySelected(WifiConfiguration currentConfig) {
if (currentConfig == null) {
Log.wtf(TAG, "Current WifiConfiguration is null, but IP provisioning just succeeded");
return false;
}
long currentTimeMillis = mClock.getElapsedSinceBootMillis();
return (mWifiConfigManager.getLastSelectedNetwork() == currentConfig.networkId
&& currentTimeMillis - mWifiConfigManager.getLastSelectedTimeStamp()
< LAST_SELECTED_NETWORK_EXPIRATION_AGE_MILLIS);
}
private void sendConnectedState() {
// If this network was explicitly selected by the user, evaluate whether to call
// explicitlySelected() so the system can treat it appropriately.
WifiConfiguration config = getCurrentWifiConfiguration();
if (shouldEvaluateWhetherToSendExplicitlySelected(config)) {
boolean prompt =
mWifiPermissionsUtil.checkNetworkSettingsPermission(config.lastConnectUid);
if (mVerboseLoggingEnabled) {
log("Network selected by UID " + config.lastConnectUid + " prompt=" + prompt);
}
if (prompt) {
// 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".
if (mVerboseLoggingEnabled) {
log("explictlySelected acceptUnvalidated=" + config.noInternetAccessExpected);
}
if (mNetworkAgent != null) {
mNetworkAgent.explicitlySelected(config.noInternetAccessExpected);
}
}
}
setNetworkDetailedState(DetailedState.CONNECTED);
sendNetworkStateChangeBroadcast(mLastBssid);
}
class RoamingState extends State {
boolean mAssociated;
@Override
public void enter() {
if (mVerboseLoggingEnabled) {
log("RoamingState Enter"
+ " mScreenOn=" + mScreenOn );
}
// Make sure we disconnect if roaming fails
roamWatchdogCount++;
logd("Start Roam Watchdog " + roamWatchdogCount);
sendMessageDelayed(obtainMessage(CMD_ROAM_WATCHDOG_TIMER,
roamWatchdogCount, 0), ROAM_GUARD_TIMER_MSEC);
mAssociated = false;
}
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
WifiConfiguration config;
switch (message.what) {
case CMD_IP_CONFIGURATION_LOST:
config = getCurrentWifiConfiguration();
if (config != null) {
mWifiDiagnostics.captureBugReportData(
WifiDiagnostics.REPORT_REASON_AUTOROAM_FAILURE);
}
return NOT_HANDLED;
case CMD_UNWANTED_NETWORK:
if (mVerboseLoggingEnabled) {
log("Roaming and CS doesnt want the network -> ignore");
}
return HANDLED;
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;
if (stateChangeResult.state == SupplicantState.DISCONNECTED
|| stateChangeResult.state == SupplicantState.INACTIVE
|| stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) {
if (mVerboseLoggingEnabled) {
log("STATE_CHANGE_EVENT in roaming state "
+ stateChangeResult.toString() );
}
if (stateChangeResult.BSSID != null
&& stateChangeResult.BSSID.equals(mTargetRoamBSSID)) {
handleNetworkDisconnect();
transitionTo(mDisconnectedState);
}
}
if (stateChangeResult.state == SupplicantState.ASSOCIATED) {
// We completed the layer2 roaming part
mAssociated = true;
if (stateChangeResult.BSSID != null) {
mTargetRoamBSSID = stateChangeResult.BSSID;
}
}
break;
case CMD_ROAM_WATCHDOG_TIMER:
if (roamWatchdogCount == message.arg1) {
if (mVerboseLoggingEnabled) log("roaming watchdog! -> disconnect");
mWifiMetrics.endConnectionEvent(
WifiMetrics.ConnectionEvent.FAILURE_ROAM_TIMEOUT,
WifiMetricsProto.ConnectionEvent.HLF_NONE);
mRoamFailCount++;
handleNetworkDisconnect();
mWifiMetrics.logStaEvent(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");
}
mLastNetworkId = message.arg1;
mLastBssid = (String) message.obj;
mWifiInfo.setBSSID(mLastBssid);
mWifiInfo.setNetworkId(mLastNetworkId);
int reasonCode = message.arg2;
mWifiConnectivityManager.trackBssid(mLastBssid, true, reasonCode);
sendNetworkStateChangeBroadcast(mLastBssid);
// Successful framework roam! (probably)
reportConnectionAttemptEnd(
WifiMetrics.ConnectionEvent.FAILURE_NONE,
WifiMetricsProto.ConnectionEvent.HLF_NONE);
// 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 DisconnectingState or
// DisconnectedState, the config BSSID is cleared by
// handleNetworkDisconnect().
clearTargetBssid("RoamingCompleted");
// We used to transition to ObtainingIpState 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(mConnectedState);
} else {
messageHandlingStatus = MESSAGE_HANDLING_STATUS_DISCARD;
}
break;
case WifiMonitor.NETWORK_DISCONNECTION_EVENT:
// Throw away but only if it corresponds to the network we're roaming to
String bssid = (String) message.obj;
if (true) {
String target = "";
if (mTargetRoamBSSID != null) target = mTargetRoamBSSID;
log("NETWORK_DISCONNECTION_EVENT in roaming state"
+ " BSSID=" + bssid
+ " target=" + target);
}
if (bssid != null && bssid.equals(mTargetRoamBSSID)) {
handleNetworkDisconnect();
transitionTo(mDisconnectedState);
}
break;
default:
return NOT_HANDLED;
}
return HANDLED;
}
@Override
public void exit() {
logd("WifiStateMachine: Leaving Roaming state");
}
}
class ConnectedState extends State {
@Override
public void enter() {
// TODO: b/64349637 Investigate getting default router IP/MAC address info from
// IpManager
//updateDefaultRouteMacAddress(1000);
if (mVerboseLoggingEnabled) {
log("Enter ConnectedState "
+ " mScreenOn=" + mScreenOn);
}
mWifiConnectivityManager.handleConnectionStateChanged(
WifiConnectivityManager.WIFI_STATE_CONNECTED);
registerConnected();
lastConnectAttemptTimestamp = 0;
targetWificonfiguration = null;
// Not roaming anymore
mIsAutoRoaming = false;
if (testNetworkDisconnect) {
testNetworkDisconnectCounter++;
logd("ConnectedState Enter start disconnect test " +
testNetworkDisconnectCounter);
sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT,
testNetworkDisconnectCounter, 0), 15000);
}
mLastDriverRoamAttempt = 0;
mTargetNetworkId = WifiConfiguration.INVALID_NETWORK_ID;
mWifiInjector.getWifiLastResortWatchdog().connectedStateTransition(true);
mWifiStateTracker.updateState(WifiStateTracker.CONNECTED);
}
@Override
public boolean processMessage(Message message) {
WifiConfiguration config = null;
logStateAndMessage(message, this);
switch (message.what) {
case CMD_UNWANTED_NETWORK:
if (message.arg1 == NETWORK_STATUS_UNWANTED_DISCONNECT) {
mWifiMetrics.logStaEvent(StaEvent.TYPE_FRAMEWORK_DISCONNECT,
StaEvent.DISCONNECT_UNWANTED);
mWifiNative.disconnect(mInterfaceName);
transitionTo(mDisconnectingState);
} else if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN ||
message.arg1 == NETWORK_STATUS_UNWANTED_VALIDATION_FAILED) {
Log.d(TAG, (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN
? "NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN"
: "NETWORK_STATUS_UNWANTED_VALIDATION_FAILED"));
config = getCurrentWifiConfiguration();
if (config != null) {
// Disable autojoin
if (message.arg1 == NETWORK_STATUS_UNWANTED_DISABLE_AUTOJOIN) {
mWifiConfigManager.setNetworkValidatedInternetAccess(
config.networkId, false);
mWifiConfigManager.updateNetworkSelectionStatus(config.networkId,
WifiConfiguration.NetworkSelectionStatus
.DISABLED_NO_INTERNET);
}
mWifiConfigManager.incrementNetworkNoInternetAccessReports(
config.networkId);
}
}
return HANDLED;
case CMD_NETWORK_STATUS:
if (message.arg1 == NetworkAgent.VALID_NETWORK) {
config = getCurrentWifiConfiguration();
if (config != null) {
// re-enable autojoin
mWifiConfigManager.setNetworkValidatedInternetAccess(
config.networkId, true);
}
}
return HANDLED;
case CMD_ACCEPT_UNVALIDATED:
boolean accept = (message.arg1 != 0);
mWifiConfigManager.setNetworkNoInternetAccessExpected(mLastNetworkId, accept);
return HANDLED;
case CMD_TEST_NETWORK_DISCONNECT:
// Force a disconnect
if (message.arg1 == testNetworkDisconnectCounter) {
mWifiNative.disconnect(mInterfaceName);
}
break;
case CMD_ASSOCIATED_BSSID:
// ASSOCIATING to a new BSSID while already connected, indicates
// that driver is roaming
mLastDriverRoamAttempt = mClock.getWallClockMillis();
return NOT_HANDLED;
case WifiMonitor.NETWORK_DISCONNECTION_EVENT:
long lastRoam = 0;
reportConnectionAttemptEnd(
WifiMetrics.ConnectionEvent.FAILURE_NETWORK_DISCONNECTION,
WifiMetricsProto.ConnectionEvent.HLF_NONE);
if (mLastDriverRoamAttempt != 0) {
// Calculate time since last driver roam attempt
lastRoam = mClock.getWallClockMillis() - mLastDriverRoamAttempt;
mLastDriverRoamAttempt = 0;
}
if (unexpectedDisconnectedReason(message.arg2)) {
mWifiDiagnostics.captureBugReportData(
WifiDiagnostics.REPORT_REASON_UNEXPECTED_DISCONNECT);
}
config = getCurrentWifiConfiguration();
if (mVerboseLoggingEnabled) {
log("NETWORK_DISCONNECTION_EVENT in connected state"
+ " BSSID=" + mWifiInfo.getBSSID()
+ " RSSI=" + mWifiInfo.getRssi()
+ " freq=" + mWifiInfo.getFrequency()
+ " reason=" + message.arg2
+ " Network Selection Status=" + (config == null ? "Unavailable"
: config.getNetworkSelectionStatus().getNetworkStatusString()));
}
break;
case CMD_START_ROAM:
// Clear the driver roam indication since we are attempting a framework roam
mLastDriverRoamAttempt = 0;
/* Connect command coming from auto-join */
int netId = message.arg1;
ScanResult candidate = (ScanResult)message.obj;
String bssid = SUPPLICANT_BSSID_ANY;
if (candidate != null) {
bssid = candidate.BSSID;
}
config = mWifiConfigManager.getConfiguredNetworkWithoutMasking(netId);
if (config == null) {
loge("CMD_START_ROAM and no config, bail out...");
break;
}
setTargetBssid(config, bssid);
mTargetNetworkId = netId;
logd("CMD_START_ROAM sup state "
+ mSupplicantStateTracker.getSupplicantStateName()
+ " my state " + getCurrentState().getName()
+ " nid=" + Integer.toString(netId)
+ " config " + config.configKey()
+ " targetRoamBSSID " + mTargetRoamBSSID);
reportConnectionAttemptStart(config, mTargetRoamBSSID,
WifiMetricsProto.ConnectionEvent.ROAM_ENTERPRISE);
if (mWifiNative.roamToNetwork(mInterfaceName, config)) {
lastConnectAttemptTimestamp = mClock.getWallClockMillis();
targetWificonfiguration = config;
mIsAutoRoaming = true;
mWifiMetrics.logStaEvent(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);
replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED,
WifiManager.ERROR);
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
break;
}
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.onPacketKeepaliveEvent(slot, result);
}
break;
}
default:
return NOT_HANDLED;
}
return HANDLED;
}
@Override
public void exit() {
logd("WifiStateMachine: Leaving Connected state");
mWifiConnectivityManager.handleConnectionStateChanged(
WifiConnectivityManager.WIFI_STATE_TRANSITIONING);
mLastDriverRoamAttempt = 0;
mWifiInjector.getWifiLastResortWatchdog().connectedStateTransition(false);
}
}
class DisconnectingState extends State {
@Override
public void enter() {
if (mVerboseLoggingEnabled) {
logd(" Enter DisconnectingState State screenOn=" + mScreenOn);
}
// Make sure we disconnect: we enter this state prior to connecting to a new
// network, waiting for either a DISCONNECT event or a SUPPLICANT_STATE_CHANGE
// event which in this case will be indicating that supplicant started to associate.
// In some cases supplicant doesn't ignore 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.
disconnectingWatchdogCount++;
logd("Start Disconnecting Watchdog " + disconnectingWatchdogCount);
sendMessageDelayed(obtainMessage(CMD_DISCONNECTING_WATCHDOG_TIMER,
disconnectingWatchdogCount, 0), DISCONNECTING_GUARD_TIMER_MSEC);
}
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
switch (message.what) {
case CMD_DISCONNECT:
if (mVerboseLoggingEnabled) log("Ignore CMD_DISCONNECT when already disconnecting.");
break;
case CMD_DISCONNECTING_WATCHDOG_TIMER:
if (disconnectingWatchdogCount == message.arg1) {
if (mVerboseLoggingEnabled) log("disconnecting watchdog! -> disconnect");
handleNetworkDisconnect();
transitionTo(mDisconnectedState);
}
break;
case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT:
/**
* If we get a SUPPLICANT_STATE_CHANGE_EVENT before NETWORK_DISCONNECTION_EVENT
* we have missed the network disconnection, transition to mDisconnectedState
* and handle the rest of the events there
*/
deferMessage(message);
handleNetworkDisconnect();
transitionTo(mDisconnectedState);
break;
default:
return NOT_HANDLED;
}
return HANDLED;
}
}
class DisconnectedState extends State {
@Override
public void enter() {
Log.i(TAG, "disconnectedstate enter");
// We dont scan frequently if this is a temporary disconnect
// due to p2p
if (mTemporarilyDisconnectWifi) {
p2pSendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE);
return;
}
if (mVerboseLoggingEnabled) {
logd(" Enter DisconnectedState screenOn=" + mScreenOn);
}
/** clear the roaming state, if we were roaming, we failed */
mIsAutoRoaming = false;
mWifiConnectivityManager.handleConnectionStateChanged(
WifiConnectivityManager.WIFI_STATE_DISCONNECTED);
mDisconnectedTimeStamp = mClock.getWallClockMillis();
}
@Override
public boolean processMessage(Message message) {
boolean ret = HANDLED;
logStateAndMessage(message, this);
switch (message.what) {
case CMD_DISCONNECT:
mWifiMetrics.logStaEvent(StaEvent.TYPE_FRAMEWORK_DISCONNECT,
StaEvent.DISCONNECT_GENERIC);
mWifiNative.disconnect(mInterfaceName);
break;
/* Ignore network disconnect */
case WifiMonitor.NETWORK_DISCONNECTION_EVENT:
// Interpret this as an L2 connection failure
break;
case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT:
StateChangeResult stateChangeResult = (StateChangeResult) message.obj;
if (mVerboseLoggingEnabled) {
logd("SUPPLICANT_STATE_CHANGE_EVENT state=" + stateChangeResult.state
+ " -> state= "
+ WifiInfo.getDetailedStateOf(stateChangeResult.state));
}
setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state));
/* ConnectModeState does the rest of the handling */
ret = NOT_HANDLED;
break;
case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED:
NetworkInfo info = (NetworkInfo) message.obj;
mP2pConnected.set(info.isConnected());
break;
case CMD_RECONNECT:
case CMD_REASSOCIATE:
if (mTemporarilyDisconnectWifi) {
// Drop a third party reconnect/reassociate if STA is
// temporarily disconnected for p2p
break;
} else {
// ConnectModeState handles it
ret = NOT_HANDLED;
}
break;
case CMD_SCREEN_STATE_CHANGED:
handleScreenStateChanged(message.arg1 != 0);
break;
default:
ret = NOT_HANDLED;
}
return ret;
}
@Override
public void exit() {
mWifiConnectivityManager.handleConnectionStateChanged(
WifiConnectivityManager.WIFI_STATE_TRANSITIONING);
}
}
class SoftApState extends State {
private SoftApManager mSoftApManager;
private String mIfaceName;
private int mMode;
/*
private class SoftApCallbackImpl implements WifiManager.SoftApCallback {
@Override
public void onStateChanged(int state, int reason) {
if (state == WIFI_AP_STATE_DISABLED) {
sendMessage(CMD_AP_STOPPED);
} else if (state == WIFI_AP_STATE_FAILED) {
sendMessage(CMD_START_AP_FAILURE);
}
setWifiApState(state, reason, mIfaceName, mMode);
if (mSoftApCallback != null) {
mSoftApCallback.onStateChanged(state, reason);
}
}
@Override
public void onNumClientsChanged(int numClients) {
if (mSoftApCallback != null) {
mSoftApCallback.onNumClientsChanged(numClients);
}
}
}
*/
@Override
public void enter() {
final Message message = getCurrentMessage();
if (message.what != CMD_START_AP) {
throw new RuntimeException("Illegal transition to SoftApState: " + message);
}
/*
SoftApModeConfiguration config = (SoftApModeConfiguration) message.obj;
mMode = config.getTargetMode();
IApInterface apInterface = null;
Pair<Integer, IApInterface> statusAndInterface =
mWifiNative.setupForSoftApMode(mInterfaceName);
if (statusAndInterface.first == WifiNative.SETUP_SUCCESS) {
apInterface = statusAndInterface.second;
} else {
incrementMetricsForSetupFailure(statusAndInterface.first);
}
if (apInterface == null) {
setWifiApState(WIFI_AP_STATE_FAILED,
WifiManager.SAP_START_FAILURE_GENERAL, null, mMode);
// Transition to InitialState to reset the driver/HAL back to the initial state.
transitionTo(mInitialState);
return;
}
try {
mIfaceName = apInterface.getInterfaceName();
} catch (RemoteException e) {
// Failed to get the interface name. This is not a good sign and we should report
// a failure and switch back to the initial state to reset the driver and HAL.
setWifiApState(WIFI_AP_STATE_FAILED,
WifiManager.SAP_START_FAILURE_GENERAL, null, mMode);
transitionTo(mInitialState);
return;
}
checkAndSetConnectivityInstance();
mSoftApManager = mWifiInjector.makeSoftApManager(mNwService,
new SoftApCallbackImpl(),
config);
mSoftApManager.start();
mWifiStateTracker.updateState(WifiStateTracker.SOFT_AP);
*/
}
@Override
public void exit() {
mSoftApManager = null;
mIfaceName = null;
mMode = WifiManager.IFACE_IP_MODE_UNSPECIFIED;
}
@Override
public boolean processMessage(Message message) {
logStateAndMessage(message, this);
switch(message.what) {
case CMD_START_AP:
/* Ignore start command when it is starting/started. */
break;
case CMD_STOP_AP:
//mSoftApManager.stop();
transitionTo(mDefaultState);
break;
case CMD_START_AP_FAILURE:
transitionTo(mDefaultState);
break;
case CMD_AP_STOPPED:
transitionTo(mDefaultState);
break;
default:
return NOT_HANDLED;
}
return HANDLED;
}
}
/**
* State machine initiated requests can have replyTo set to null indicating
* there are no recepients, we ignore those reply actions.
*/
private void replyToMessage(Message msg, int what) {
if (msg.replyTo == null) return;
Message dstMsg = obtainMessageWithWhatAndArg2(msg, what);
mReplyChannel.replyToMessage(msg, dstMsg);
}
private void replyToMessage(Message msg, int what, int arg1) {
if (msg.replyTo == null) return;
Message dstMsg = obtainMessageWithWhatAndArg2(msg, what);
dstMsg.arg1 = arg1;
mReplyChannel.replyToMessage(msg, dstMsg);
}
private void replyToMessage(Message msg, int what, Object obj) {
if (msg.replyTo == null) return;
Message dstMsg = obtainMessageWithWhatAndArg2(msg, what);
dstMsg.obj = obj;
mReplyChannel.replyToMessage(msg, dstMsg);
}
/**
* arg2 on the source message has a unique id that needs to be retained in replies
* to match the request
* <p>see WifiManager for details
*/
private Message obtainMessageWithWhatAndArg2(Message srcMsg, int what) {
Message msg = Message.obtain();
msg.what = what;
msg.arg2 = srcMsg.arg2;
return msg;
}
/**
* Notify interested parties if a wifi config has been changed.
*
* @param wifiCredentialEventType WIFI_CREDENTIAL_SAVED or WIFI_CREDENTIAL_FORGOT
* @param config Must have a WifiConfiguration object to succeed
* TODO: b/35258354 investigate if this can be removed. Is the broadcast sent by
* WifiConfigManager sufficient?
*/
private void broadcastWifiCredentialChanged(int wifiCredentialEventType,
WifiConfiguration config) {
if (config != null && config.preSharedKey != null) {
Intent intent = new Intent(WifiManager.WIFI_CREDENTIAL_CHANGED_ACTION);
intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_SSID, config.SSID);
intent.putExtra(WifiManager.EXTRA_WIFI_CREDENTIAL_EVENT_TYPE,
wifiCredentialEventType);
mContext.sendBroadcastAsUser(intent, UserHandle.CURRENT,
android.Manifest.permission.RECEIVE_WIFI_CREDENTIAL_CHANGE);
}
}
void handleGsmAuthRequest(SimAuthRequestData requestData) {
if (targetWificonfiguration == null
|| targetWificonfiguration.networkId
== requestData.networkId) {
logd("id matches targetWifiConfiguration");
} else {
logd("id does not match targetWifiConfiguration");
return;
}
String response =
TelephonyUtil.getGsmSimAuthResponse(requestData.data, getTelephonyManager());
if (response == null) {
mWifiNative.simAuthFailedResponse(mInterfaceName, requestData.networkId);
} else {
logv("Supplicant Response -" + response);
mWifiNative.simAuthResponse(
mInterfaceName, requestData.networkId,
WifiNative.SIM_AUTH_RESP_TYPE_GSM_AUTH, response);
}
}
void handle3GAuthRequest(SimAuthRequestData requestData) {
if (targetWificonfiguration == null
|| targetWificonfiguration.networkId
== requestData.networkId) {
logd("id matches targetWifiConfiguration");
} else {
logd("id does not match targetWifiConfiguration");
return;
}
SimAuthResponseData response =
TelephonyUtil.get3GAuthResponse(requestData, getTelephonyManager());
if (response != null) {
mWifiNative.simAuthResponse(
mInterfaceName, requestData.networkId, response.type, response.response);
} else {
mWifiNative.umtsAuthFailedResponse(mInterfaceName, requestData.networkId);
}
}
/**
* 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 scanResult scan result which identifies the network to roam to
*/
public void startRoamToNetwork(int networkId, ScanResult scanResult) {
sendMessage(CMD_START_ROAM, networkId, 0, scanResult);
}
/**
* Dynamically turn on/off WifiConnectivityManager
*
* @param enabled true-enable; false-disable
*/
public void enableWifiConnectivityManager(boolean enabled) {
sendMessage(CMD_ENABLE_WIFI_CONNECTIVITY_MANAGER, enabled ? 1 : 0);
}
/**
* @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 == 2 // PREV_AUTH_NOT_VALID
|| reason == 6 // CLASS2_FRAME_FROM_NONAUTH_STA
|| reason == 7 // FRAME_FROM_NONASSOC_STA
|| reason == 8 // STA_HAS_LEFT
|| reason == 9 // STA_REQ_ASSOC_WITHOUT_AUTH
|| reason == 14 // MICHAEL_MIC_FAILURE
|| reason == 15 // 4WAY_HANDSHAKE_TIMEOUT
|| reason == 16 // GROUP_KEY_UPDATE_TIMEOUT
|| reason == 18 // GROUP_CIPHER_NOT_VALID
|| reason == 19 // PAIRWISE_CIPHER_NOT_VALID
|| reason == 23 // IEEE_802_1X_AUTH_FAILED
|| reason == 34; // DISASSOC_LOW_ACK
}
/**
* Update WifiMetrics before dumping
*/
public void updateWifiMetrics() {
mWifiMetrics.updateSavedNetworks(mWifiConfigManager.getSavedNetworks());
mPasspointManager.updateMetrics();
}
/**
* Private method to handle calling WifiConfigManager to forget/remove network configs and reply
* to the message from the sender of the outcome.
*
* The current implementation requires that forget and remove be handled in different ways
* (responses are handled differently). In the interests of organization, the handling is all
* now in this helper method. TODO: b/35257965 is filed to track the possibility of merging
* the two call paths.
*/
private boolean deleteNetworkConfigAndSendReply(Message message, boolean calledFromForget) {
boolean success = mWifiConfigManager.removeNetwork(message.arg1, message.sendingUid);
if (!success) {
loge("Failed to remove network");
}
if (calledFromForget) {
if (success) {
replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED);
broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_FORGOT,
(WifiConfiguration) message.obj);
return true;
}
replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, WifiManager.ERROR);
return false;
} else {
// Remaining calls are from the removeNetwork path
if (success) {
replyToMessage(message, message.what, SUCCESS);
return true;
}
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
replyToMessage(message, message.what, FAILURE);
return false;
}
}
/**
* Private method to handle calling WifiConfigManager to add & enable network configs and reply
* to the message from the sender of the outcome.
*
* @return NetworkUpdateResult with networkId of the added/updated configuration. Will return
* {@link WifiConfiguration#INVALID_NETWORK_ID} in case of error.
*/
private NetworkUpdateResult saveNetworkConfigAndSendReply(Message message) {
WifiConfiguration config = (WifiConfiguration) message.obj;
if (config == null) {
loge("SAVE_NETWORK with null configuration "
+ mSupplicantStateTracker.getSupplicantStateName()
+ " my state " + getCurrentState().getName());
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, WifiManager.ERROR);
return new NetworkUpdateResult(WifiConfiguration.INVALID_NETWORK_ID);
}
NetworkUpdateResult result =
mWifiConfigManager.addOrUpdateNetwork(config, message.sendingUid);
if (!result.isSuccess()) {
loge("SAVE_NETWORK adding/updating config=" + config + " failed");
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, WifiManager.ERROR);
return result;
}
if (!mWifiConfigManager.enableNetwork(
result.getNetworkId(), false, message.sendingUid)) {
loge("SAVE_NETWORK enabling config=" + config + " failed");
messageHandlingStatus = MESSAGE_HANDLING_STATUS_FAIL;
replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, WifiManager.ERROR);
return new NetworkUpdateResult(WifiConfiguration.INVALID_NETWORK_ID);
}
broadcastWifiCredentialChanged(WifiManager.WIFI_CREDENTIAL_SAVED, config);
replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED);
return result;
}
private static String getLinkPropertiesSummary(LinkProperties lp) {
List<String> 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 getTargetSsid() {
WifiConfiguration currentConfig = mWifiConfigManager.getConfiguredNetwork(mTargetNetworkId);
if (currentConfig != null) {
return currentConfig.SSID;
}
return null;
}
/**
* Send message to WifiP2pServiceImpl.
* @return true if message is sent.
* false if there is no channel configured for WifiP2pServiceImpl.
*/
private boolean p2pSendMessage(int what) {
if (mWifiP2pChannel != null) {
mWifiP2pChannel.sendMessage(what);
return true;
}
return false;
}
/**
* Send message to WifiP2pServiceImpl with an additional param |arg1|.
* @return true if message is sent.
* false if there is no channel configured for WifiP2pServiceImpl.
*/
private boolean p2pSendMessage(int what, int arg1) {
if (mWifiP2pChannel != null) {
mWifiP2pChannel.sendMessage(what, arg1);
return true;
}
return false;
}
/**
* Check if there is any connection request for WiFi network.
* Note, caller of this helper function must acquire mWifiReqCountLock.
*/
private boolean hasConnectionRequests() {
return mConnectionReqCount > 0 || mUntrustedReqCount > 0;
}
/**
* Returns whether CMD_IP_REACHABILITY_LOST events should trigger disconnects.
*/
public boolean getIpReachabilityDisconnectEnabled() {
return mIpReachabilityDisconnectEnabled;
}
/**
* Sets whether CMD_IP_REACHABILITY_LOST events should trigger disconnects.
*/
public void setIpReachabilityDisconnectEnabled(boolean enabled) {
mIpReachabilityDisconnectEnabled = enabled;
}
/**
* Sends a message to initialize the WifiStateMachine.
*
* @return true if succeeded, false otherwise.
*/
public boolean syncInitialize(AsyncChannel channel) {
Message resultMsg = channel.sendMessageSynchronously(CMD_INITIALIZE);
boolean result = (resultMsg.arg1 != FAILURE);
resultMsg.recycle();
return result;
}
}