| /* |
| * 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; |
| |
| /** |
| * TODO: |
| * Deprecate WIFI_STATE_UNKNOWN |
| */ |
| import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLED; |
| import static android.net.wifi.WifiManager.WIFI_AP_STATE_DISABLING; |
| import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLED; |
| import static android.net.wifi.WifiManager.WIFI_AP_STATE_ENABLING; |
| import static android.net.wifi.WifiManager.WIFI_AP_STATE_FAILED; |
| |
| import android.app.AlarmManager; |
| import android.app.PendingIntent; |
| import android.app.backup.IBackupManager; |
| import android.bluetooth.BluetoothAdapter; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.database.ContentObserver; |
| import android.net.ConnectivityManager; |
| import android.net.DhcpResults; |
| import android.net.DhcpStateMachine; |
| import android.net.InterfaceConfiguration; |
| import android.net.LinkAddress; |
| import android.net.LinkProperties; |
| import android.net.NetworkAgent; |
| import android.net.NetworkCapabilities; |
| import android.net.NetworkFactory; |
| import android.net.NetworkInfo; |
| import android.net.NetworkInfo.DetailedState; |
| import android.net.NetworkUtils; |
| import android.net.RouteInfo; |
| import android.net.TrafficStats; |
| import android.net.wifi.*; |
| import android.net.wifi.WpsResult.Status; |
| import android.net.wifi.p2p.IWifiP2pManager; |
| import android.net.wifi.passpoint.IWifiPasspointManager; |
| import android.os.BatteryStats; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.os.INetworkManagementService; |
| 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.ServiceManager; |
| import android.os.SystemClock; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.os.WorkSource; |
| import android.provider.Settings; |
| import android.telephony.TelephonyManager; |
| import android.util.LruCache; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import com.android.internal.R; |
| import com.android.internal.app.IBatteryStats; |
| import com.android.internal.util.AsyncChannel; |
| import com.android.internal.util.Protocol; |
| import com.android.internal.util.State; |
| import com.android.internal.util.StateMachine; |
| import com.android.server.net.BaseNetworkObserver; |
| import com.android.server.net.NetlinkTracker; |
| |
| import com.android.server.wifi.p2p.WifiP2pServiceImpl; |
| import com.android.server.wifi.passpoint.WifiPasspointServiceImpl; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.net.InetAddress; |
| import java.util.*; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.regex.Pattern; |
| import java.io.FileReader; |
| import java.io.BufferedReader; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.net.Inet4Address; |
| |
| /** |
| * 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 boolean DBG = false; |
| private static boolean VDBG = false; |
| private static boolean mLogMessages = false; |
| |
| private static final int ONE_HOUR_MILLI = 1000 * 60 * 60; |
| |
| /* temporary debug flag - best network selection development */ |
| private static boolean PDBG = false; |
| |
| /* 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 |
| */ |
| protected void loge(String s) { |
| Log.e(getName(), s); |
| } |
| protected void log(String s) {; |
| Log.e(getName(), s); |
| } |
| |
| private WifiMonitor mWifiMonitor; |
| private WifiNative mWifiNative; |
| private WifiConfigStore mWifiConfigStore; |
| private WifiAutoJoinController mWifiAutoJoinController; |
| private INetworkManagementService mNwService; |
| private ConnectivityManager mCm; |
| |
| private final boolean mP2pSupported; |
| private final AtomicBoolean mP2pConnected = new AtomicBoolean(false); |
| private boolean mTemporarilyDisconnectWifi = false; |
| private final String mPrimaryDeviceType; |
| |
| /* Scan results handling */ |
| private List<ScanResult> mScanResults = new ArrayList<ScanResult>(); |
| private static final Pattern scanResultPattern = Pattern.compile("\t+"); |
| private static final int SCAN_RESULT_CACHE_SIZE = 80; |
| private final LruCache<String, ScanResult> mScanResultCache; |
| |
| /* Batch scan results */ |
| private final List<BatchedScanResult> mBatchedScanResults = |
| new ArrayList<BatchedScanResult>(); |
| private int mBatchedScanOwnerUid = UNKNOWN_SCAN_SOURCE; |
| private int mExpectedBatchedScans = 0; |
| private long mBatchedScanMinPollTime = 0; |
| |
| private boolean mScreenOn = false; |
| |
| /* Chipset supports background scan */ |
| private final boolean mBackgroundScanSupported; |
| |
| private String mInterfaceName; |
| /* Tethering interface could be separate from wlan interface */ |
| private String mTetherInterfaceName; |
| |
| private int mLastSignalLevel = -1; |
| private String mLastBssid; |
| private int mLastNetworkId; // The network Id we successfully joined |
| private boolean linkDebouncing = false; |
| |
| // Testing various network disconnect cases by sending lots of spurious |
| // disconnect to supplicant |
| private boolean testNetworkDisconnect = false; |
| |
| private boolean mEnableRssiPolling = false; |
| private boolean mEnableBackgroundScan = false; |
| 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 = CONNECT_MODE; |
| private boolean mIsScanOngoing = false; |
| private boolean mIsFullScanOngoing = false; |
| private final Queue<Message> mBufferedScanMsg = new LinkedList<Message>(); |
| private WorkSource mScanWorkSource = null; |
| private static final int UNKNOWN_SCAN_SOURCE = -1; |
| private static final int SCAN_ALARM_SOURCE = -2; |
| |
| private static final int SCAN_REQUEST_BUFFER_MAX_SIZE = 10; |
| private static final String CUSTOMIZED_SCAN_SETTING = "customized_scan_settings"; |
| private static final String CUSTOMIZED_SCAN_WORKSOURCE = "customized_scan_worksource"; |
| private static final String BATCHED_SETTING = "batched_settings"; |
| private static final String BATCHED_WORKSOURCE = "batched_worksource"; |
| |
| /* Tracks if state machine has received any screen state change broadcast yet. |
| * We can miss one of these at boot. |
| */ |
| private AtomicBoolean mScreenBroadcastReceived = new AtomicBoolean(false); |
| |
| private boolean mBluetoothConnectionActive = false; |
| |
| private PowerManager.WakeLock mSuspendWakeLock; |
| |
| /** |
| * Interval in milliseconds between polling for RSSI |
| * and linkspeed information |
| */ |
| private static final int 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 = 7000; |
| |
| /** |
| * 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; |
| |
| private int mSupplicantRestartCount = 0; |
| /* Tracks sequence number on stop failure message */ |
| private int mSupplicantStopFailureToken = 0; |
| |
| /** |
| * Tether state change notification time out |
| */ |
| private static final int TETHER_NOTIFICATION_TIME_OUT_MSECS = 5000; |
| |
| /* Tracks sequence number on a tether notification time out */ |
| private int mTetherToken = 0; |
| |
| /** |
| * Driver start time out. |
| */ |
| private static final int DRIVER_START_TIME_OUT_MSECS = 10000; |
| |
| /* Tracks sequence number on a driver time out */ |
| private int mDriverStartToken = 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; |
| private WifiInfo mWifiInfo; |
| private NetworkInfo mNetworkInfo; |
| private NetworkCapabilities mNetworkCapabilities; |
| private SupplicantStateTracker mSupplicantStateTracker; |
| private DhcpStateMachine mDhcpStateMachine; |
| private boolean mDhcpActive = false; |
| |
| private int mWifiLinkLayerStatsSupported = 4; |
| |
| private final AtomicInteger mCountryCodeSequence = new AtomicInteger(); |
| |
| //whether the state machine goes thru the Disconnecting->Disconnected->ObtainingIpAddress |
| private int mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; |
| |
| private String mTargetRoamBSSID = "any"; |
| |
| private WifiConfiguration targetWificonfiguration = null; |
| |
| boolean isRoaming() { |
| return mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_ROAMING |
| || mAutoRoaming == WifiAutoJoinController.AUTO_JOIN_EXTENDED_ROAMING; |
| } |
| |
| public void autoRoamSetBSSID(int netId, String bssid) { |
| autoRoamSetBSSID(mWifiConfigStore.getWifiConfiguration(netId), bssid); |
| } |
| |
| public void autoRoamSetBSSID(WifiConfiguration config, String bssid) { |
| mTargetRoamBSSID = "any"; |
| if (config == null || bssid == null) |
| return; |
| if (config.bssidOwnerUid == 0 || config.bssidOwnerUid == Process.WIFI_UID) { |
| if (VDBG) { |
| loge("autoRoamSetBSSID uid=" + Long.toString(config.bssidOwnerUid) |
| + " bssid=" + bssid |
| + " key=" + config.configKey()); |
| } |
| config.bssidOwnerUid = Process.WIFI_UID; |
| config.BSSID = bssid; |
| mTargetRoamBSSID = bssid; |
| } |
| } |
| |
| /** |
| * Subset of link properties coming from netlink. |
| * Currently includes IPv4 and IPv6 addresses. In the future will also include IPv6 DNS servers |
| * and domains obtained from router advertisements (RFC 6106). |
| */ |
| private NetlinkTracker mNetlinkTracker; |
| |
| private AlarmManager mAlarmManager; |
| private PendingIntent mScanIntent; |
| private PendingIntent mDriverStopIntent; |
| private PendingIntent mBatchedScanIntervalIntent; |
| |
| /* Tracks current frequency mode */ |
| private AtomicInteger mFrequencyBand = new AtomicInteger(WifiManager.WIFI_FREQUENCY_BAND_AUTO); |
| |
| /* Tracks if we are filtering Multicast v4 packets. Default is to filter. */ |
| private AtomicBoolean mFilteringMulticastV4Packets = new AtomicBoolean(true); |
| |
| // Channel for sending replies. |
| private AsyncChannel mReplyChannel = new AsyncChannel(); |
| |
| private WifiP2pServiceImpl mWifiP2pServiceImpl; |
| private WifiPasspointServiceImpl mPasspointServiceImpl; |
| |
| // Used to initiate a connection with WifiP2pService |
| private AsyncChannel mWifiP2pChannel; |
| private AsyncChannel mWifiApConfigChannel; |
| |
| private WifiNetworkFactory mNetworkFactory; |
| private WifiNetworkAgent mNetworkAgent; |
| |
| // Keep track of various statistics, for retrieval by System Apps, i.e. under @SystemApi |
| // We should really persist that into the networkHistory.txt file, and read it back when |
| // WifiStateMachine starts up |
| private WifiConnectionStatistics mWifiConnectionStatistics = new WifiConnectionStatistics(); |
| |
| // Used to filter out requests we couldn't possibly satisfy. |
| private final NetworkCapabilities mNetworkCapabilitiesFilter = new NetworkCapabilities(); |
| |
| /* The base for wifi message types */ |
| static final int BASE = Protocol.BASE_WIFI; |
| /* Start the supplicant */ |
| static final int CMD_START_SUPPLICANT = BASE + 11; |
| /* Stop the supplicant */ |
| static final int CMD_STOP_SUPPLICANT = BASE + 12; |
| /* Start the driver */ |
| static final int CMD_START_DRIVER = BASE + 13; |
| /* Stop the driver */ |
| static final int CMD_STOP_DRIVER = BASE + 14; |
| /* 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; |
| /* Indicates supplicant stop failed */ |
| static final int CMD_STOP_SUPPLICANT_FAILED = BASE + 17; |
| /* Delayed stop to avoid shutting down driver too quick*/ |
| static final int CMD_DELAYED_STOP_DRIVER = BASE + 18; |
| /* 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 succeeded */ |
| static final int CMD_START_AP_SUCCESS = BASE + 22; |
| /* Indicates soft ap start failed */ |
| static final int CMD_START_AP_FAILURE = BASE + 23; |
| /* Stop the soft access point */ |
| static final int CMD_STOP_AP = BASE + 24; |
| /* Set the soft access point configuration */ |
| static final int CMD_SET_AP_CONFIG = BASE + 25; |
| /* Soft access point configuration set completed */ |
| static final int CMD_SET_AP_CONFIG_COMPLETED = BASE + 26; |
| /* Request the soft access point configuration */ |
| static final int CMD_REQUEST_AP_CONFIG = BASE + 27; |
| /* Response to access point configuration request */ |
| static final int CMD_RESPONSE_AP_CONFIG = BASE + 28; |
| /* Invoked when getting a tether state change notification */ |
| static final int CMD_TETHER_STATE_CHANGE = BASE + 29; |
| /* A delayed message sent to indicate tether state change failed to arrive */ |
| static final int CMD_TETHER_NOTIFICATION_TIMED_OUT = BASE + 30; |
| |
| static final int CMD_BLUETOOTH_ADAPTER_STATE_CHANGE = BASE + 31; |
| |
| /* Supplicant commands */ |
| /* Is supplicant alive ? */ |
| static final int CMD_PING_SUPPLICANT = BASE + 51; |
| /* 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; |
| /* Enable all networks */ |
| static final int CMD_ENABLE_ALL_NETWORKS = BASE + 55; |
| /* Blacklist network. De-prioritizes the given BSSID for connection. */ |
| static final int CMD_BLACKLIST_NETWORK = BASE + 56; |
| /* Clear the blacklist network list */ |
| static final int CMD_CLEAR_BLACKLIST = BASE + 57; |
| /* Save configuration */ |
| static final int CMD_SAVE_CONFIG = BASE + 58; |
| /* Get configured networks */ |
| static final int CMD_GET_CONFIGURED_NETWORKS = BASE + 59; |
| /* Get available frequencies */ |
| static final int CMD_GET_CAPABILITY_FREQ = BASE + 60; |
| /* Get adaptors */ |
| static final int CMD_GET_ADAPTORS = BASE + 61; |
| /* Get configured networks with real preSharedKey */ |
| static final int CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS = BASE + 62; |
| |
| /* Supplicant commands after driver start*/ |
| /* Initiate a scan */ |
| static final int CMD_START_SCAN = BASE + 71; |
| /* 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; |
| /* Get Connection Statistis */ |
| static final int CMD_GET_CONNECTION_STATISTICS = BASE + 76; |
| |
| /* 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; |
| /* Set the country code */ |
| static final int CMD_SET_COUNTRY_CODE = BASE + 80; |
| /* Enables RSSI poll */ |
| static final int CMD_ENABLE_RSSI_POLL = BASE + 82; |
| /* RSSI poll */ |
| static final int CMD_RSSI_POLL = BASE + 83; |
| /* Set up packet filtering */ |
| static final int CMD_START_PACKET_FILTERING = BASE + 84; |
| /* Clear packet filter */ |
| static final int CMD_STOP_PACKET_FILTERING = BASE + 85; |
| /* Enable suspend mode optimizations in the driver */ |
| static final int CMD_SET_SUSPEND_OPT_ENABLED = BASE + 86; |
| /* Delayed NETWORK_DISCONNECT */ |
| static final int CMD_DELAYED_NETWORK_DISCONNECT = BASE + 87; |
| /* When there are no saved networks, we do a periodic scan to notify user of |
| * an open network */ |
| static final int CMD_NO_NETWORKS_PERIODIC_SCAN = BASE + 88; |
| /* Test network Disconnection NETWORK_DISCONNECT */ |
| static final int CMD_TEST_NETWORK_DISCONNECT = BASE + 89; |
| private int testNetworkDisconnectCounter = 0; |
| |
| /* arg1 values to CMD_STOP_PACKET_FILTERING and CMD_START_PACKET_FILTERING */ |
| static final int MULTICAST_V6 = 1; |
| static final int MULTICAST_V4 = 0; |
| |
| /* Set the frequency band */ |
| static final int CMD_SET_FREQUENCY_BAND = BASE + 90; |
| /* Enable background scan for configured networks */ |
| static final int CMD_ENABLE_BACKGROUND_SCAN = BASE + 91; |
| /* Enable TDLS on a specific MAC address */ |
| static final int CMD_ENABLE_TDLS = BASE + 92; |
| /* Enable TDLS on a specific MAC address */ |
| static final int CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER = BASE + 93; |
| |
| /** |
| * Make this timer 32 seconds, which is about the normal DHCP timeout. |
| * In no valid case, the WiFiStateMachine should remain stuck in ObtainingIpAddress |
| * for more than 30 seconds. |
| */ |
| static final int OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC = 32000; |
| |
| int obtainingIpWatchdogCount = 0; |
| /* Commands from/to the SupplicantStateTracker */ |
| /* Reset the supplicant state tracker */ |
| static final int CMD_RESET_SUPPLICANT_STATE = BASE + 111; |
| |
| /* 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; |
| |
| public static final int CMD_BOOT_COMPLETED = BASE + 134; |
| |
| /* change the batch scan settings. |
| * arg1 = responsible UID |
| * arg2 = csph (channel scans per hour) |
| * obj = bundle with the new settings and the optional worksource |
| */ |
| public static final int CMD_SET_BATCHED_SCAN = BASE + 135; |
| public static final int CMD_START_NEXT_BATCHED_SCAN = BASE + 136; |
| public static final int CMD_POLL_BATCHED_SCAN = BASE + 137; |
| |
| /* 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; |
| |
| |
| /* Reload all networks and reconnect */ |
| static final int CMD_RELOAD_TLS_AND_RECONNECT = BASE + 142; |
| |
| static final int CMD_AUTO_CONNECT = BASE + 143; |
| |
| static final int CMD_UNWANTED_NETWORK = BASE + 144; |
| |
| static final int CMD_AUTO_ROAM = BASE + 145; |
| |
| |
| /* 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; |
| |
| 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; |
| |
| /* Tracks if user has enabled suspend optimizations through settings */ |
| private AtomicBoolean mUserWantsSuspendOpt = new AtomicBoolean(true); |
| |
| /** |
| * Default framework scan interval in milliseconds. This is used in the scenario in which |
| * wifi chipset does not support background scanning to set up a |
| * periodic wake up scan so that the device can connect to a new access |
| * point on the move. {@link Settings.Global#WIFI_FRAMEWORK_SCAN_INTERVAL_MS} can |
| * override this. |
| */ |
| private final int mDefaultFrameworkScanIntervalMs; |
| |
| /** |
| * Connected state framework scan interval in milliseconds. |
| * This is used for extended roaming, when screen is lit. |
| */ |
| private int mConnectedScanPeriodMs = 10000; |
| private int mDisconnectedScanPeriodMs = 10000; |
| |
| /** |
| * 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; |
| |
| /** |
| * timeStamp of last full band scan we perfoemed for autojoin while connected with screen lit |
| */ |
| private long lastFullBandConnectedTimeMilli; |
| |
| /** |
| * time interval to the next full band scan we will perform for |
| * autojoin while connected with screen lit |
| */ |
| private long fullBandConnectedTimeIntervalMilli; |
| |
| /** |
| * max time interval to the next full band scan we will perform for |
| * autojoin while connected with screen lit |
| * Max time is 5 minutes |
| */ |
| private static final long maxFullBandConnectedTimeIntervalMilli = 1000 * 60 * 5; |
| |
| /** |
| * Minimum time interval between enabling all networks. |
| * A device can end up repeatedly connecting to a bad network on screen on/off toggle |
| * due to enabling every time. We add a threshold to avoid this. |
| */ |
| private static final int MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS = 10 * 60 * 1000; /* 10 minutes */ |
| private long mLastEnableAllNetworksTime; |
| |
| /** |
| * Starting and shutting down driver too quick causes problems leading to driver |
| * being in a bad state. Delay driver stop. |
| */ |
| private final int mDriverStopDelayMs; |
| private int mDelayedStopCounter; |
| private boolean mInDelayedStop = false; |
| |
| // sometimes telephony gives us this data before boot is complete and we can't store it |
| // until after, so the write is deferred |
| private volatile String mPersistedCountryCode; |
| |
| // Supplicant doesn't like setting the same country code multiple times (it may drop |
| // currently connected network), so we save the country code here to avoid redundency |
| private String mLastSetCountryCode; |
| |
| /* 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(); |
| /* Waiting for supplicant to stop and monitor to exit */ |
| private State mSupplicantStoppingState = new SupplicantStoppingState(); |
| /* Driver start issued, waiting for completed event */ |
| private State mDriverStartingState = new DriverStartingState(); |
| /* Driver started */ |
| private State mDriverStartedState = new DriverStartedState(); |
| /* Wait until p2p is disabled |
| * This is a special state which is entered right after we exit out of DriverStartedState |
| * before transitioning to another state. |
| */ |
| private State mWaitForP2pDisableState = new WaitForP2pDisableState(); |
| /* Driver stopping */ |
| private State mDriverStoppingState = new DriverStoppingState(); |
| /* Driver stopped */ |
| private State mDriverStoppedState = new DriverStoppedState(); |
| /* 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(); |
| /* Waiting for link quality verification to be complete */ |
| private State mVerifyingLinkState = new VerifyingLinkState(); |
| /* 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(); |
| /* Waiting for WPS to be completed*/ |
| private State mWpsRunningState = new WpsRunningState(); |
| |
| /* Soft ap is starting up */ |
| private State mSoftApStartingState = new SoftApStartingState(); |
| /* Soft ap is running */ |
| private State mSoftApStartedState = new SoftApStartedState(); |
| /* Soft ap is running and we are waiting for tether notification */ |
| private State mTetheringState = new TetheringState(); |
| /* Soft ap is running and we are tethered through connectivity service */ |
| private State mTetheredState = new TetheredState(); |
| /* Waiting for untether confirmation before stopping soft Ap */ |
| private State mUntetheringState = new UntetheringState(); |
| |
| private class TetherStateChange { |
| ArrayList<String> available; |
| ArrayList<String> active; |
| TetherStateChange(ArrayList<String> av, ArrayList<String> ac) { |
| available = av; |
| active = ac; |
| } |
| } |
| |
| public static class SimAuthRequestData { |
| int networkId; |
| String ssid; |
| String rand1; |
| String rand2; |
| String rand3; |
| } |
| |
| public static class SimAuthResponseData { |
| int id; |
| String Kc1; |
| String SRES1; |
| String Kc2; |
| String SRES2; |
| String Kc3; |
| String SRES3; |
| } |
| |
| /** |
| * 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); |
| |
| /** |
| * One of {@link WifiManager#WIFI_AP_STATE_DISABLED}, |
| * {@link WifiManager#WIFI_AP_STATE_DISABLING}, |
| * {@link WifiManager#WIFI_AP_STATE_ENABLED}, |
| * {@link WifiManager#WIFI_AP_STATE_ENABLING}, |
| * {@link WifiManager#WIFI_AP_STATE_FAILED} |
| * |
| */ |
| private final AtomicInteger mWifiApState = new AtomicInteger(WIFI_AP_STATE_DISABLED); |
| |
| private static final int SCAN_REQUEST = 0; |
| private static final String ACTION_START_SCAN = |
| "com.android.server.WifiManager.action.START_SCAN"; |
| |
| private static final String DELAYED_STOP_COUNTER = "DelayedStopCounter"; |
| private static final int DRIVER_STOP_REQUEST = 0; |
| private static final String ACTION_DELAYED_DRIVER_STOP = |
| "com.android.server.WifiManager.action.DELAYED_DRIVER_STOP"; |
| |
| private static final String ACTION_REFRESH_BATCHED_SCAN = |
| "com.android.server.WifiManager.action.REFRESH_BATCHED_SCAN"; |
| /** |
| * 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 final IBatteryStats mBatteryStats; |
| |
| private BatchedScanSettings mBatchedScanSettings = null; |
| |
| /** |
| * Track the worksource/cost of the current settings and track what's been noted |
| * to the battery stats, so we can mark the end of the previous when changing. |
| */ |
| private WorkSource mBatchedScanWorkSource = null; |
| private int mBatchedScanCsph = 0; |
| private WorkSource mNotedBatchedScanWorkSource = null; |
| private int mNotedBatchedScanCsph = 0; |
| |
| private AtomicBoolean mFrameworkAutoJoin = new AtomicBoolean(true); //enable by default |
| |
| public WifiStateMachine(Context context, String wlanInterface, |
| WifiTrafficPoller trafficPoller){ |
| super("WifiStateMachine"); |
| mContext = context; |
| mInterfaceName = wlanInterface; |
| mNetworkInfo = new NetworkInfo(ConnectivityManager.TYPE_WIFI, 0, NETWORKTYPE, ""); |
| mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService( |
| BatteryStats.SERVICE_NAME)); |
| |
| IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE); |
| mNwService = INetworkManagementService.Stub.asInterface(b); |
| |
| mP2pSupported = mContext.getPackageManager().hasSystemFeature( |
| PackageManager.FEATURE_WIFI_DIRECT); |
| |
| mWifiNative = new WifiNative(mInterfaceName); |
| mWifiConfigStore = new WifiConfigStore(context, mWifiNative); |
| mWifiAutoJoinController = new WifiAutoJoinController(context, this, |
| mWifiConfigStore, mWifiConnectionStatistics, mWifiNative); |
| mWifiMonitor = new WifiMonitor(this, mWifiNative); |
| mWifiInfo = new WifiInfo(); |
| mSupplicantStateTracker = new SupplicantStateTracker(context, this, mWifiConfigStore, |
| getHandler()); |
| mLinkProperties = new LinkProperties(); |
| |
| IBinder s1 = ServiceManager.getService(Context.WIFI_P2P_SERVICE); |
| mWifiP2pServiceImpl = (WifiP2pServiceImpl)IWifiP2pManager.Stub.asInterface(s1); |
| |
| IBinder s2 = ServiceManager.getService(Context.WIFI_PASSPOINT_SERVICE); |
| mPasspointServiceImpl = (WifiPasspointServiceImpl)IWifiPasspointManager.Stub.asInterface(s2); |
| |
| mNetworkInfo.setIsAvailable(false); |
| mLastBssid = null; |
| mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; |
| mLastSignalLevel = -1; |
| |
| mNetlinkTracker = new NetlinkTracker(mInterfaceName, new NetlinkTracker.Callback() { |
| public void update() { |
| sendMessage(CMD_UPDATE_LINKPROPERTIES); |
| } |
| }); |
| try { |
| mNwService.registerObserver(mNetlinkTracker); |
| } catch (RemoteException e) { |
| loge("Couldn't register netlink tracker: " + e.toString()); |
| } |
| |
| mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); |
| Intent scanIntent = new Intent(ACTION_START_SCAN, null); |
| mScanIntent = PendingIntent.getBroadcast(mContext, SCAN_REQUEST, scanIntent, 0); |
| |
| Intent batchedIntent = new Intent(ACTION_REFRESH_BATCHED_SCAN, null); |
| mBatchedScanIntervalIntent = PendingIntent.getBroadcast(mContext, 0, batchedIntent, 0); |
| |
| mDefaultFrameworkScanIntervalMs = mContext.getResources().getInteger( |
| R.integer.config_wifi_framework_scan_interval); |
| |
| mDriverStopDelayMs = mContext.getResources().getInteger( |
| R.integer.config_wifi_driver_stop_delay); |
| |
| mBackgroundScanSupported = mContext.getResources().getBoolean( |
| R.bool.config_wifi_background_scan_support); |
| |
| mPrimaryDeviceType = mContext.getResources().getString( |
| R.string.config_wifi_p2p_device_type); |
| |
| mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); |
| |
| mFrameworkAutoJoin.set(Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.WIFI_ENHANCED_AUTO_JOIN, 1) == 1); |
| |
| mNetworkCapabilitiesFilter.addTransportType(NetworkCapabilities.TRANSPORT_WIFI); |
| mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); |
| mNetworkCapabilitiesFilter.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED); |
| mNetworkCapabilitiesFilter.setLinkUpstreamBandwidthKbps(1024 * 1024); |
| mNetworkCapabilitiesFilter.setLinkDownstreamBandwidthKbps(1024 * 1024); |
| // TODO - needs to be a bit more dynamic |
| mNetworkCapabilities = new NetworkCapabilities(mNetworkCapabilitiesFilter); |
| |
| mContext.registerReceiver( |
| new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| ArrayList<String> available = intent.getStringArrayListExtra( |
| ConnectivityManager.EXTRA_AVAILABLE_TETHER); |
| ArrayList<String> active = intent.getStringArrayListExtra( |
| ConnectivityManager.EXTRA_ACTIVE_TETHER); |
| sendMessage(CMD_TETHER_STATE_CHANGE, new TetherStateChange(available, active)); |
| } |
| },new IntentFilter(ConnectivityManager.ACTION_TETHER_STATE_CHANGED)); |
| |
| mContext.registerReceiver( |
| new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| startScan(SCAN_ALARM_SOURCE, null, null); |
| if (VDBG) |
| loge("WiFiStateMachine SCAN ALARM"); |
| } |
| }, |
| new IntentFilter(ACTION_START_SCAN)); |
| |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_SCREEN_ON); |
| filter.addAction(Intent.ACTION_SCREEN_OFF); |
| filter.addAction(ACTION_REFRESH_BATCHED_SCAN); |
| mContext.registerReceiver( |
| new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| |
| if (action.equals(Intent.ACTION_SCREEN_ON)) { |
| handleScreenStateChanged(true); |
| } else if (action.equals(Intent.ACTION_SCREEN_OFF)) { |
| handleScreenStateChanged(false); |
| } else if (action.equals(ACTION_REFRESH_BATCHED_SCAN)) { |
| startNextBatchedScanAsync(); |
| } |
| } |
| }, filter); |
| |
| mContext.registerReceiver( |
| new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| int counter = intent.getIntExtra(DELAYED_STOP_COUNTER, 0); |
| sendMessage(CMD_DELAYED_STOP_DRIVER, counter, 0); |
| } |
| }, |
| new IntentFilter(ACTION_DELAYED_DRIVER_STOP)); |
| |
| mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED), false, |
| new ContentObserver(getHandler()) { |
| @Override |
| public void onChange(boolean selfChange) { |
| mUserWantsSuspendOpt.set(Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.WIFI_SUSPEND_OPTIMIZATIONS_ENABLED, 1) == 1); |
| } |
| }); |
| |
| mContext.getContentResolver().registerContentObserver(Settings.Global.getUriFor( |
| Settings.Global.WIFI_ENHANCED_AUTO_JOIN), false, |
| new ContentObserver(getHandler()) { |
| @Override |
| public void onChange(boolean selfChange) { |
| mFrameworkAutoJoin.set(Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.WIFI_ENHANCED_AUTO_JOIN, 0) == 1); |
| } |
| }); |
| |
| mContext.registerReceiver( |
| new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| sendMessage(CMD_BOOT_COMPLETED); |
| } |
| }, |
| new IntentFilter(Intent.ACTION_BOOT_COMPLETED)); |
| |
| mScanResultCache = new LruCache<String, ScanResult>(SCAN_RESULT_CACHE_SIZE); |
| |
| 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); |
| |
| addState(mDefaultState); |
| addState(mInitialState, mDefaultState); |
| addState(mSupplicantStartingState, mDefaultState); |
| addState(mSupplicantStartedState, mDefaultState); |
| addState(mDriverStartingState, mSupplicantStartedState); |
| addState(mDriverStartedState, mSupplicantStartedState); |
| addState(mScanModeState, mDriverStartedState); |
| addState(mConnectModeState, mDriverStartedState); |
| addState(mL2ConnectedState, mConnectModeState); |
| addState(mObtainingIpState, mL2ConnectedState); |
| addState(mVerifyingLinkState, mL2ConnectedState); |
| addState(mConnectedState, mL2ConnectedState); |
| addState(mRoamingState, mL2ConnectedState); |
| addState(mDisconnectingState, mConnectModeState); |
| addState(mDisconnectedState, mConnectModeState); |
| addState(mWpsRunningState, mConnectModeState); |
| addState(mWaitForP2pDisableState, mSupplicantStartedState); |
| addState(mDriverStoppingState, mSupplicantStartedState); |
| addState(mDriverStoppedState, mSupplicantStartedState); |
| addState(mSupplicantStoppingState, mDefaultState); |
| addState(mSoftApStartingState, mDefaultState); |
| addState(mSoftApStartedState, mDefaultState); |
| addState(mTetheringState, mSoftApStartedState); |
| addState(mTetheredState, mSoftApStartedState); |
| addState(mUntetheringState, mSoftApStartedState); |
| |
| setInitialState(mInitialState); |
| |
| setLogRecSize(5000); |
| setLogOnlyTransitions(false); |
| if (VDBG) setDbg(true); |
| |
| //start the state machine |
| start(); |
| |
| 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); |
| } |
| |
| private int mVerboseLoggingLevel = 0; |
| |
| int getVerboseLoggingLevel() { |
| return mVerboseLoggingLevel; |
| } |
| |
| void enableVerboseLogging(int verbose) { |
| mVerboseLoggingLevel = verbose; |
| if (verbose > 0) { |
| DBG = true; |
| VDBG = true; |
| PDBG = true; |
| mLogMessages = true; |
| mWifiNative.setSupplicantLogLevel("DEBUG"); |
| } else { |
| DBG = false; |
| VDBG = false; |
| PDBG = false; |
| mLogMessages = false; |
| mWifiNative.setSupplicantLogLevel("INFO"); |
| } |
| mWifiAutoJoinController.enableVerboseLogging(verbose); |
| mWifiMonitor.enableVerboseLogging(verbose); |
| mWifiNative.enableVerboseLogging(verbose); |
| mWifiConfigStore.enableVerboseLogging(verbose); |
| mSupplicantStateTracker.enableVerboseLogging(verbose); |
| } |
| |
| private int mAggressiveHandover = 0; |
| |
| int getAggressiveHandover() { |
| return mAggressiveHandover; |
| } |
| |
| void enableAggressiveHandover(int enabled) { |
| mAggressiveHandover = enabled; |
| } |
| |
| private int mAllowScansWithTraffic = 0; |
| |
| public void setAllowScansWithTraffic(int enabled) { |
| mAllowScansWithTraffic = enabled; |
| } |
| |
| public int getAllowScansWithTraffic() { |
| return mAllowScansWithTraffic; |
| } |
| |
| /* |
| * |
| * Framework scan control |
| */ |
| |
| private boolean mAlarmEnabled = false; |
| /* This is set from the overlay config file or from a secure setting. |
| * A value of 0 disables scanning in the framework. |
| */ |
| private long mFrameworkScanIntervalMs = 10000; |
| |
| private long mCurrentScanAlarmMs = 10000; |
| private void setScanAlarm(boolean enabled) { |
| if (PDBG) { |
| loge("setScanAlarm " + enabled + " period " + mCurrentScanAlarmMs); |
| } |
| if (mCurrentScanAlarmMs <= 0) enabled = false; |
| if (enabled == mAlarmEnabled) return; |
| if (enabled) { |
| mAlarmManager.setRepeating(AlarmManager.RTC_WAKEUP, |
| System.currentTimeMillis() + mCurrentScanAlarmMs, |
| mCurrentScanAlarmMs, |
| mScanIntent); |
| mAlarmEnabled = true; |
| } else { |
| mAlarmManager.cancel(mScanIntent); |
| mAlarmEnabled = false; |
| } |
| } |
| |
| /********************************************************* |
| * Methods exposed for public use |
| ********************************************************/ |
| |
| public Messenger getMessenger() { |
| return new Messenger(getHandler()); |
| } |
| |
| public WifiMonitor getWifiMonitor() { |
| return mWifiMonitor; |
| } |
| |
| /** |
| * TODO: doc |
| */ |
| public boolean syncPingSupplicant(AsyncChannel channel) { |
| Message resultMsg = channel.sendMessageSynchronously(CMD_PING_SUPPLICANT); |
| boolean result = (resultMsg.arg1 != FAILURE); |
| resultMsg.recycle(); |
| return result; |
| } |
| |
| public List<WifiChannel> syncGetChannelList(AsyncChannel channel) { |
| Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CAPABILITY_FREQ); |
| List<WifiChannel> list = null; |
| if (resultMsg.obj != null) { |
| list = new ArrayList<WifiChannel>(); |
| String freqs = (String) resultMsg.obj; |
| String[] lines = freqs.split("\n"); |
| for (String line : lines) |
| if (line.contains("MHz")) { |
| // line format: " 52 = 5260 MHz (NO_IBSS) (DFS)" |
| WifiChannel c = new WifiChannel(); |
| String[] prop = line.split(" "); |
| if (prop.length < 5) continue; |
| try { |
| c.channelNum = Integer.parseInt(prop[1]); |
| c.freqMHz = Integer.parseInt(prop[3]); |
| } catch (NumberFormatException e) { } |
| c.isDFS = line.contains("(DFS)"); |
| list.add(c); |
| } else if (line.contains("Mode[B] Channels:")) { |
| // B channels are the same as G channels, skipped |
| break; |
| } |
| } |
| resultMsg.recycle(); |
| return (list != null && list.size() > 0) ? list : null; |
| } |
| |
| |
| /** |
| * Initiate a wifi scan. If workSource is not null, blame is given to it, otherwise blame is |
| * given to callingUid. |
| * |
| * @param callingUid The uid initiating the wifi scan. Blame will be given here unless |
| * workSource is specified. |
| * @param workSource If not null, blame is given to workSource. |
| * @param settings Scan settings, see {@link ScanSettings}. |
| */ |
| public void startScan(int callingUid, ScanSettings settings, WorkSource workSource) { |
| Bundle bundle = new Bundle(); |
| bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, settings); |
| bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); |
| sendMessage(CMD_START_SCAN, callingUid, 0, bundle); |
| } |
| |
| /** |
| * start or stop batched scanning using the given settings |
| */ |
| public void setBatchedScanSettings(BatchedScanSettings settings, int callingUid, int csph, |
| WorkSource workSource) { |
| Bundle bundle = new Bundle(); |
| bundle.putParcelable(BATCHED_SETTING, settings); |
| bundle.putParcelable(BATCHED_WORKSOURCE, workSource); |
| sendMessage(CMD_SET_BATCHED_SCAN, callingUid, csph, bundle); |
| } |
| |
| public List<BatchedScanResult> syncGetBatchedScanResultsList() { |
| synchronized (mBatchedScanResults) { |
| List<BatchedScanResult> batchedScanList = |
| new ArrayList<BatchedScanResult>(mBatchedScanResults.size()); |
| for(BatchedScanResult result: mBatchedScanResults) { |
| batchedScanList.add(new BatchedScanResult(result)); |
| } |
| return batchedScanList; |
| } |
| } |
| |
| public void requestBatchedScanPoll() { |
| sendMessage(CMD_POLL_BATCHED_SCAN); |
| } |
| |
| private void startBatchedScan() { |
| if (mBatchedScanSettings == null) return; |
| |
| if (mDhcpActive) { |
| if (DBG) log("not starting Batched Scans due to DHCP"); |
| return; |
| } |
| |
| // first grab any existing data |
| retrieveBatchedScanData(); |
| |
| if (PDBG) loge("try starting Batched Scans due to DHCP"); |
| |
| |
| mAlarmManager.cancel(mBatchedScanIntervalIntent); |
| |
| String scansExpected = mWifiNative.setBatchedScanSettings(mBatchedScanSettings); |
| try { |
| mExpectedBatchedScans = Integer.parseInt(scansExpected); |
| setNextBatchedAlarm(mExpectedBatchedScans); |
| if (mExpectedBatchedScans > 0) noteBatchedScanStart(); |
| } catch (NumberFormatException e) { |
| stopBatchedScan(); |
| loge("Exception parsing WifiNative.setBatchedScanSettings response " + e); |
| } |
| } |
| |
| // called from BroadcastListener |
| private void startNextBatchedScanAsync() { |
| sendMessage(CMD_START_NEXT_BATCHED_SCAN); |
| } |
| |
| private void startNextBatchedScan() { |
| // first grab any existing data |
| retrieveBatchedScanData(); |
| |
| setNextBatchedAlarm(mExpectedBatchedScans); |
| } |
| |
| private void handleBatchedScanPollRequest() { |
| if (DBG) { |
| log("handleBatchedScanPoll Request - mBatchedScanMinPollTime=" + |
| mBatchedScanMinPollTime + " , mBatchedScanSettings=" + |
| mBatchedScanSettings); |
| } |
| // if there is no appropriate PollTime that's because we either aren't |
| // batching or we've already set a time for a poll request |
| if (mBatchedScanMinPollTime == 0) return; |
| if (mBatchedScanSettings == null) return; |
| |
| long now = System.currentTimeMillis(); |
| |
| if (now > mBatchedScanMinPollTime) { |
| // do the poll and reset our timers |
| startNextBatchedScan(); |
| } else { |
| mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, mBatchedScanMinPollTime, |
| mBatchedScanIntervalIntent); |
| mBatchedScanMinPollTime = 0; |
| } |
| } |
| |
| // return true if new/different |
| private boolean recordBatchedScanSettings(int responsibleUid, int csph, Bundle bundle) { |
| BatchedScanSettings settings = bundle.getParcelable(BATCHED_SETTING); |
| WorkSource responsibleWorkSource = bundle.getParcelable(BATCHED_WORKSOURCE); |
| |
| if (DBG) { |
| log("set batched scan to " + settings + " for uid=" + responsibleUid + |
| ", worksource=" + responsibleWorkSource); |
| } |
| if (settings != null) { |
| if (settings.equals(mBatchedScanSettings)) return false; |
| } else { |
| if (mBatchedScanSettings == null) return false; |
| } |
| mBatchedScanSettings = settings; |
| if (responsibleWorkSource == null) responsibleWorkSource = new WorkSource(responsibleUid); |
| mBatchedScanWorkSource = responsibleWorkSource; |
| mBatchedScanCsph = csph; |
| return true; |
| } |
| |
| private void stopBatchedScan() { |
| mAlarmManager.cancel(mBatchedScanIntervalIntent); |
| retrieveBatchedScanData(); |
| mWifiNative.setBatchedScanSettings(null); |
| noteBatchedScanStop(); |
| } |
| |
| private void setNextBatchedAlarm(int scansExpected) { |
| |
| if (mBatchedScanSettings == null || scansExpected < 1) return; |
| |
| mBatchedScanMinPollTime = System.currentTimeMillis() + |
| mBatchedScanSettings.scanIntervalSec * 1000; |
| |
| if (mBatchedScanSettings.maxScansPerBatch < scansExpected) { |
| scansExpected = mBatchedScanSettings.maxScansPerBatch; |
| } |
| |
| int secToFull = mBatchedScanSettings.scanIntervalSec; |
| secToFull *= scansExpected; |
| |
| int debugPeriod = SystemProperties.getInt("wifi.batchedScan.pollPeriod", 0); |
| if (debugPeriod > 0) secToFull = debugPeriod; |
| |
| // set the alarm to do the next poll. We set it a little short as we'd rather |
| // wake up wearly than miss a scan due to buffer overflow |
| mAlarmManager.setExact(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() |
| + ((secToFull - (mBatchedScanSettings.scanIntervalSec / 2)) * 1000), |
| mBatchedScanIntervalIntent); |
| } |
| |
| /** |
| * Start reading new scan data |
| * Data comes in as: |
| * "scancount=5\n" |
| * "nextcount=5\n" |
| * "apcount=3\n" |
| * "trunc\n" (optional) |
| * "bssid=...\n" |
| * "ssid=...\n" |
| * "freq=...\n" (in Mhz) |
| * "level=...\n" |
| * "dist=...\n" (in cm) |
| * "distsd=...\n" (standard deviation, in cm) |
| * "====" |
| * "bssid=...\n" |
| * etc |
| * "====" |
| * "bssid=...\n" |
| * etc |
| * "%%%%" |
| * "apcount=2\n" |
| * "bssid=...\n" |
| * etc |
| * "%%%% |
| * etc |
| * "----" |
| */ |
| private final static boolean DEBUG_PARSE = false; |
| private void retrieveBatchedScanData() { |
| String rawData = mWifiNative.getBatchedScanResults(); |
| if (DEBUG_PARSE) log("rawData = " + rawData); |
| mBatchedScanMinPollTime = 0; |
| if (rawData == null || rawData.equalsIgnoreCase("OK")) { |
| loge("Unexpected BatchedScanResults :" + rawData); |
| return; |
| } |
| |
| int scanCount = 0; |
| final String END_OF_BATCHES = "----"; |
| final String SCANCOUNT = "scancount="; |
| final String TRUNCATED = "trunc"; |
| final String AGE = "age="; |
| final String DIST = "dist="; |
| final String DISTSD = "distSd="; |
| |
| String splitData[] = rawData.split("\n"); |
| int n = 0; |
| if (splitData[n].startsWith(SCANCOUNT)) { |
| try { |
| scanCount = Integer.parseInt(splitData[n++].substring(SCANCOUNT.length())); |
| } catch (NumberFormatException e) { |
| loge("scancount parseInt Exception from " + splitData[n]); |
| } |
| } else log("scancount not found"); |
| if (scanCount == 0) { |
| loge("scanCount==0 - aborting"); |
| return; |
| } |
| |
| final Intent intent = new Intent(WifiManager.BATCHED_SCAN_RESULTS_AVAILABLE_ACTION); |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); |
| |
| synchronized (mBatchedScanResults) { |
| mBatchedScanResults.clear(); |
| BatchedScanResult batchedScanResult = new BatchedScanResult(); |
| |
| String bssid = null; |
| WifiSsid wifiSsid = null; |
| int level = 0; |
| int freq = 0; |
| int dist, distSd; |
| long tsf = 0; |
| dist = distSd = ScanResult.UNSPECIFIED; |
| final long now = SystemClock.elapsedRealtime(); |
| final int bssidStrLen = BSSID_STR.length(); |
| |
| while (true) { |
| while (n < splitData.length) { |
| if (DEBUG_PARSE) logd("parsing " + splitData[n]); |
| if (splitData[n].equals(END_OF_BATCHES)) { |
| if (n+1 != splitData.length) { |
| loge("didn't consume " + (splitData.length-n)); |
| } |
| if (mBatchedScanResults.size() > 0) { |
| mContext.sendBroadcastAsUser(intent, UserHandle.ALL); |
| } |
| logd("retrieveBatchedScanResults X"); |
| return; |
| } |
| if ((splitData[n].equals(END_STR)) || splitData[n].equals(DELIMITER_STR)) { |
| if (bssid != null) { |
| batchedScanResult.scanResults.add(new ScanResult( |
| wifiSsid, bssid, "", level, freq, tsf, dist, distSd)); |
| wifiSsid = null; |
| bssid = null; |
| level = 0; |
| freq = 0; |
| tsf = 0; |
| dist = distSd = ScanResult.UNSPECIFIED; |
| } |
| if (splitData[n].equals(END_STR)) { |
| if (batchedScanResult.scanResults.size() != 0) { |
| mBatchedScanResults.add(batchedScanResult); |
| batchedScanResult = new BatchedScanResult(); |
| } else { |
| logd("Found empty batch"); |
| } |
| } |
| } else if (splitData[n].equals(TRUNCATED)) { |
| batchedScanResult.truncated = true; |
| } else if (splitData[n].startsWith(BSSID_STR)) { |
| bssid = new String(splitData[n].getBytes(), bssidStrLen, |
| splitData[n].length() - bssidStrLen); |
| } else if (splitData[n].startsWith(FREQ_STR)) { |
| try { |
| freq = Integer.parseInt(splitData[n].substring(FREQ_STR.length())); |
| } catch (NumberFormatException e) { |
| loge("Invalid freqency: " + splitData[n]); |
| freq = 0; |
| } |
| } else if (splitData[n].startsWith(AGE)) { |
| try { |
| tsf = now - Long.parseLong(splitData[n].substring(AGE.length())); |
| tsf *= 1000; // convert mS -> uS |
| } catch (NumberFormatException e) { |
| loge("Invalid timestamp: " + splitData[n]); |
| tsf = 0; |
| } |
| } else if (splitData[n].startsWith(SSID_STR)) { |
| wifiSsid = WifiSsid.createFromAsciiEncoded( |
| splitData[n].substring(SSID_STR.length())); |
| } else if (splitData[n].startsWith(LEVEL_STR)) { |
| try { |
| level = Integer.parseInt(splitData[n].substring(LEVEL_STR.length())); |
| if (level > 0) level -= 256; |
| } catch (NumberFormatException e) { |
| loge("Invalid level: " + splitData[n]); |
| level = 0; |
| } |
| } else if (splitData[n].startsWith(DIST)) { |
| try { |
| dist = Integer.parseInt(splitData[n].substring(DIST.length())); |
| } catch (NumberFormatException e) { |
| loge("Invalid distance: " + splitData[n]); |
| dist = ScanResult.UNSPECIFIED; |
| } |
| } else if (splitData[n].startsWith(DISTSD)) { |
| try { |
| distSd = Integer.parseInt(splitData[n].substring(DISTSD.length())); |
| } catch (NumberFormatException e) { |
| loge("Invalid distanceSd: " + splitData[n]); |
| distSd = ScanResult.UNSPECIFIED; |
| } |
| } else { |
| loge("Unable to parse batched scan result line: " + splitData[n]); |
| } |
| n++; |
| } |
| rawData = mWifiNative.getBatchedScanResults(); |
| if (DEBUG_PARSE) log("reading more data:\n" + rawData); |
| if (rawData == null) { |
| loge("Unexpected null BatchedScanResults"); |
| return; |
| } |
| splitData = rawData.split("\n"); |
| if (splitData.length == 0 || splitData[0].equals("ok")) { |
| loge("batch scan results just ended!"); |
| if (mBatchedScanResults.size() > 0) { |
| mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); |
| } |
| return; |
| } |
| n = 0; |
| } |
| } |
| } |
| |
| //keeping track of scan requests |
| private long lastStartScanTimeStamp = 0; |
| private long lastScanDuration = 0; |
| //last connect attempt is used to prevent scan requests: |
| // - for a period of 10 seconds after attempting to connect |
| private long lastConnectAttempt = 0; |
| private String lastScanFreqs = null; |
| |
| //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 isScanAllowed() { |
| long now = System.currentTimeMillis(); |
| if (lastConnectAttempt != 0 && (now - lastConnectAttempt) < 10000) { |
| return false; |
| } |
| return true; |
| } |
| |
| // If workSource is not null, blame is given to it, otherwise blame is given to callingUid. |
| private void noteScanStart(int callingUid, WorkSource workSource) { |
| long now = System.currentTimeMillis(); |
| lastStartScanTimeStamp = now; |
| lastScanDuration = 0; |
| if (DBG) { |
| String ts = String.format("[%,d ms]", now); |
| if (workSource != null) { |
| loge(ts + " noteScanStart" + workSource.toString() |
| + " uid " + Integer.toString(callingUid)); |
| } else { |
| loge(ts + " noteScanstart no scan source"); |
| } |
| } |
| if (mScanWorkSource == null && ((callingUid != UNKNOWN_SCAN_SOURCE |
| && callingUid != SCAN_ALARM_SOURCE) |
| || workSource != null)) { |
| mScanWorkSource = workSource != null ? workSource : new WorkSource(callingUid); |
| try { |
| mBatteryStats.noteWifiScanStartedFromSource(mScanWorkSource); |
| } catch (RemoteException e) { |
| log(e.toString()); |
| } |
| } |
| } |
| |
| private void noteScanEnd() { |
| long now = System.currentTimeMillis(); |
| if (lastStartScanTimeStamp != 0) { |
| lastScanDuration = now - lastStartScanTimeStamp; |
| } |
| lastStartScanTimeStamp = 0; |
| if (DBG) { |
| String ts = String.format("[%,d ms]", now); |
| |
| if (mScanWorkSource != null) |
| loge(ts + " noteScanEnd " + mScanWorkSource.toString()); |
| else |
| loge(ts + " noteScanEnd no scan source"); |
| } |
| if (mScanWorkSource != null) { |
| try { |
| mBatteryStats.noteWifiScanStoppedFromSource(mScanWorkSource); |
| } catch (RemoteException e) { |
| log(e.toString()); |
| } finally { |
| mScanWorkSource = null; |
| } |
| } |
| } |
| |
| private void noteBatchedScanStart() { |
| if (PDBG) loge("noteBatchedScanstart()"); |
| // note the end of a previous scan set |
| if (mNotedBatchedScanWorkSource != null && |
| (mNotedBatchedScanWorkSource.equals(mBatchedScanWorkSource) == false || |
| mNotedBatchedScanCsph != mBatchedScanCsph)) { |
| try { |
| mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); |
| } catch (RemoteException e) { |
| log(e.toString()); |
| } finally { |
| mNotedBatchedScanWorkSource = null; |
| mNotedBatchedScanCsph = 0; |
| } |
| } |
| // note the start of the new |
| try { |
| mBatteryStats.noteWifiBatchedScanStartedFromSource(mBatchedScanWorkSource, |
| mBatchedScanCsph); |
| mNotedBatchedScanWorkSource = mBatchedScanWorkSource; |
| mNotedBatchedScanCsph = mBatchedScanCsph; |
| } catch (RemoteException e) { |
| log(e.toString()); |
| } |
| } |
| |
| private void noteBatchedScanStop() { |
| if (PDBG) loge("noteBatchedScanstop()"); |
| |
| if (mNotedBatchedScanWorkSource != null) { |
| try { |
| mBatteryStats.noteWifiBatchedScanStoppedFromSource(mNotedBatchedScanWorkSource); |
| } catch (RemoteException e) { |
| log(e.toString()); |
| } finally { |
| mNotedBatchedScanWorkSource = null; |
| mNotedBatchedScanCsph = 0; |
| } |
| } |
| } |
| |
| private void handleScanRequest(int type, Message message) { |
| // unbundle parameters |
| Bundle bundle = (Bundle) message.obj; |
| ScanSettings settings = bundle.getParcelable(CUSTOMIZED_SCAN_SETTING); |
| WorkSource workSource = bundle.getParcelable(CUSTOMIZED_SCAN_WORKSOURCE); |
| |
| // parse scan settings |
| String freqs = null; |
| if (settings != null && settings.channelSet != null) { |
| StringBuilder sb = new StringBuilder(); |
| boolean first = true; |
| for (WifiChannel channel : settings.channelSet) { |
| if (!first) sb.append(','); else first = false; |
| sb.append(channel.freqMHz); |
| } |
| freqs = sb.toString(); |
| } |
| |
| // call wifi native to start the scan |
| if (startScanNative(type, freqs)) { |
| // only count battery consumption if scan request is accepted |
| noteScanStart(message.arg1, workSource); |
| // a full scan covers everything, clearing scan request buffer |
| if (freqs == null) |
| mBufferedScanMsg.clear(); |
| return; |
| } |
| |
| // if reach here, scan request is rejected |
| |
| if (!mIsScanOngoing) { |
| // if rejection is NOT due to ongoing scan (e.g. bad scan parameters), |
| // discard this request and pop up the next one |
| if (mBufferedScanMsg.size() > 0) |
| sendMessage(mBufferedScanMsg.remove()); |
| } else if (!mIsFullScanOngoing) { |
| // if rejection is due to an ongoing scan, and the ongoing one is NOT a full scan, |
| // buffer the scan request to make sure specified channels will be scanned eventually |
| if (freqs == null) |
| mBufferedScanMsg.clear(); |
| if (mBufferedScanMsg.size() < SCAN_REQUEST_BUFFER_MAX_SIZE) { |
| Message msg = obtainMessage(CMD_START_SCAN, message.arg1, 0, bundle); |
| mBufferedScanMsg.add(msg); |
| } else { |
| // if too many requests in buffer, combine them into a single full scan |
| bundle = new Bundle(); |
| bundle.putParcelable(CUSTOMIZED_SCAN_SETTING, null); |
| bundle.putParcelable(CUSTOMIZED_SCAN_WORKSOURCE, workSource); |
| Message msg = obtainMessage(CMD_START_SCAN, message.arg1, 0, bundle); |
| mBufferedScanMsg.clear(); |
| mBufferedScanMsg.add(msg); |
| } |
| } |
| } |
| |
| |
| /** return true iff scan request is accepted */ |
| private boolean startScanNative(int type, String freqs) { |
| if (mWifiNative.scan(type, freqs)) { |
| mIsScanOngoing = true; |
| mIsFullScanOngoing = (freqs == null); |
| lastScanFreqs = freqs; |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * TODO: doc |
| */ |
| public void setSupplicantRunning(boolean enable) { |
| if (enable) { |
| sendMessage(CMD_START_SUPPLICANT); |
| } else { |
| sendMessage(CMD_STOP_SUPPLICANT); |
| } |
| } |
| |
| /** |
| * TODO: doc |
| */ |
| public void setHostApRunning(WifiConfiguration wifiConfig, boolean enable) { |
| if (enable) { |
| sendMessage(CMD_START_AP, wifiConfig); |
| } else { |
| sendMessage(CMD_STOP_AP); |
| } |
| } |
| |
| public void setWifiApConfiguration(WifiConfiguration config) { |
| mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); |
| } |
| |
| public WifiConfiguration syncGetWifiApConfiguration() { |
| Message resultMsg = mWifiApConfigChannel.sendMessageSynchronously(CMD_REQUEST_AP_CONFIG); |
| WifiConfiguration ret = (WifiConfiguration) resultMsg.obj; |
| resultMsg.recycle(); |
| return ret; |
| } |
| |
| /** |
| * 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]"; |
| } |
| } |
| |
| /** |
| * TODO: doc |
| */ |
| public int syncGetWifiApState() { |
| return mWifiApState.get(); |
| } |
| |
| /** |
| * TODO: doc |
| */ |
| public String syncGetWifiApStateByName() { |
| switch (mWifiApState.get()) { |
| case WIFI_AP_STATE_DISABLING: |
| return "disabling"; |
| case WIFI_AP_STATE_DISABLED: |
| return "disabled"; |
| case WIFI_AP_STATE_ENABLING: |
| return "enabling"; |
| case WIFI_AP_STATE_ENABLED: |
| return "enabled"; |
| case WIFI_AP_STATE_FAILED: |
| return "failed"; |
| default: |
| return "[invalid state]"; |
| } |
| } |
| |
| /** |
| * Get status information for the current connection, if any. |
| * @return a {@link WifiInfo} object containing information about the current connection |
| * |
| */ |
| public WifiInfo syncRequestConnectionInfo() { |
| return mWifiInfo; |
| } |
| |
| public DhcpResults syncGetDhcpResults() { |
| synchronized (mDhcpResultsLock) { |
| return new DhcpResults(mDhcpResults); |
| } |
| } |
| |
| /** |
| * TODO: doc |
| */ |
| public void setDriverStart(boolean enable) { |
| if (enable) { |
| sendMessage(CMD_START_DRIVER); |
| } else { |
| sendMessage(CMD_STOP_DRIVER); |
| } |
| } |
| |
| /** |
| * TODO: doc |
| */ |
| public void setOperationalMode(int mode) { |
| if (DBG) log("setting operational mode to " + String.valueOf(mode)); |
| sendMessage(CMD_SET_OPERATIONAL_MODE, mode, 0); |
| } |
| |
| /** |
| * TODO: doc |
| */ |
| public List<ScanResult> syncGetScanResultsList() { |
| synchronized (mScanResultCache) { |
| List<ScanResult> scanList = new ArrayList<ScanResult>(); |
| for(ScanResult result: mScanResults) { |
| scanList.add(new ScanResult(result)); |
| } |
| return scanList; |
| } |
| } |
| |
| /** |
| * Disconnect from Access Point |
| */ |
| public void disconnectCommand() { |
| sendMessage(CMD_DISCONNECT); |
| } |
| |
| /** |
| * Initiate a reconnection to AP |
| */ |
| public void reconnectCommand() { |
| sendMessage(CMD_RECONNECT); |
| } |
| |
| /** |
| * 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(AsyncChannel channel) { |
| Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONFIGURED_NETWORKS); |
| 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; |
| } |
| |
| |
| /** |
| * Get connection statistics synchronously |
| * @param channel |
| * @return |
| */ |
| |
| public WifiConnectionStatistics syncGetConnectionStatistics(AsyncChannel channel) { |
| Message resultMsg = channel.sendMessageSynchronously(CMD_GET_CONNECTION_STATISTICS); |
| WifiConnectionStatistics result = (WifiConnectionStatistics) resultMsg.obj; |
| resultMsg.recycle(); |
| return result; |
| } |
| |
| /** |
| * Get adaptors synchronously |
| */ |
| |
| public List<WifiAdapter> syncGetAdaptors(AsyncChannel channel) { |
| Message resultMsg = channel.sendMessageSynchronously(CMD_GET_ADAPTORS); |
| List<WifiAdapter> result = (List<WifiAdapter>) 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.arg1 != WifiManager.DISABLE_NETWORK_FAILED); |
| resultMsg.recycle(); |
| return result; |
| } |
| |
| /** |
| * Retrieves a WPS-NFC configuration token for the specified network |
| * @return a hex string representation of the WPS-NFC configuration token |
| */ |
| public String syncGetWpsNfcConfigurationToken(int netId) { |
| return mWifiNative.getNfcWpsConfigurationToken(netId); |
| } |
| |
| /** |
| * Blacklist a BSSID. This will avoid the AP if there are |
| * alternate APs to connect |
| * |
| * @param bssid BSSID of the network |
| */ |
| public void addToBlacklist(String bssid) { |
| sendMessage(CMD_BLACKLIST_NETWORK, bssid); |
| } |
| |
| /** |
| * Clear the blacklist list |
| * |
| */ |
| public void clearBlacklist() { |
| sendMessage(CMD_CLEAR_BLACKLIST); |
| } |
| |
| public void enableRssiPolling(boolean enabled) { |
| sendMessage(CMD_ENABLE_RSSI_POLL, enabled ? 1 : 0, 0); |
| } |
| |
| public void enableBackgroundScanCommand(boolean enabled) { |
| sendMessage(CMD_ENABLE_BACKGROUND_SCAN, enabled ? 1 : 0, 0); |
| } |
| |
| public void enableAllNetworks() { |
| sendMessage(CMD_ENABLE_ALL_NETWORKS); |
| } |
| |
| /** |
| * Start filtering Multicast v4 packets |
| */ |
| public void startFilteringMulticastV4Packets() { |
| mFilteringMulticastV4Packets.set(true); |
| sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V4, 0); |
| } |
| |
| /** |
| * Stop filtering Multicast v4 packets |
| */ |
| public void stopFilteringMulticastV4Packets() { |
| mFilteringMulticastV4Packets.set(false); |
| sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V4, 0); |
| } |
| |
| /** |
| * Start filtering Multicast v4 packets |
| */ |
| public void startFilteringMulticastV6Packets() { |
| sendMessage(CMD_START_PACKET_FILTERING, MULTICAST_V6, 0); |
| } |
| |
| /** |
| * Stop filtering Multicast v4 packets |
| */ |
| public void stopFilteringMulticastV6Packets() { |
| sendMessage(CMD_STOP_PACKET_FILTERING, MULTICAST_V6, 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); |
| } |
| |
| /** |
| * Set the country code |
| * @param countryCode following ISO 3166 format |
| * @param persist {@code true} if the setting should be remembered. |
| */ |
| public void setCountryCode(String countryCode, boolean persist) { |
| // If it's a good country code, apply after the current |
| // wifi connection is terminated; ignore resetting of code |
| // for now (it is unclear what the chipset should do when |
| // country code is reset) |
| int countryCodeSequence = mCountryCodeSequence.incrementAndGet(); |
| if (TextUtils.isEmpty(countryCode)) { |
| log("Ignoring resetting of country code"); |
| } else { |
| sendMessage(CMD_SET_COUNTRY_CODE, countryCodeSequence, persist ? 1 : 0, countryCode); |
| } |
| } |
| |
| /** |
| * Set the operational frequency band |
| * @param band |
| * @param persist {@code true} if the setting should be remembered. |
| */ |
| public void setFrequencyBand(int band, boolean persist) { |
| if (persist) { |
| Settings.Global.putInt(mContext.getContentResolver(), |
| Settings.Global.WIFI_FREQUENCY_BAND, |
| band); |
| } |
| sendMessage(CMD_SET_FREQUENCY_BAND, band, 0); |
| } |
| |
| /** |
| * 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); |
| } |
| |
| /** |
| * Returns the operational frequency band |
| */ |
| public int getFrequencyBand() { |
| return mFrequencyBand.get(); |
| } |
| |
| /** |
| * Returns the wifi configuration file |
| */ |
| public String getConfigFile() { |
| return mWifiConfigStore.getConfigFile(); |
| } |
| |
| /** |
| * Send a message indicating bluetooth adapter connection state changed |
| */ |
| public void sendBluetoothAdapterStateChange(int state) { |
| sendMessage(CMD_BLUETOOTH_ADAPTER_STATE_CHANGE, state, 0); |
| } |
| |
| /** |
| * Save configuration on supplicant |
| * |
| * @return {@code true} if the operation succeeds, {@code false} otherwise |
| * |
| * TODO: deprecate this |
| */ |
| public boolean syncSaveConfig(AsyncChannel channel) { |
| Message resultMsg = channel.sendMessageSynchronously(CMD_SAVE_CONFIG); |
| boolean result = (resultMsg.arg1 != FAILURE); |
| resultMsg.recycle(); |
| return result; |
| } |
| |
| 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.diff(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) { |
| } |
| } |
| } |
| |
| @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); |
| pw.println("Supplicant status " + mWifiNative.status()); |
| pw.println("mEnableBackgroundScan " + mEnableBackgroundScan); |
| pw.println("mLastSetCountryCode " + mLastSetCountryCode); |
| pw.println("mPersistedCountryCode " + mPersistedCountryCode); |
| pw.println(); |
| mWifiConfigStore.dump(fd, pw, args); |
| } |
| |
| /********************************************************* |
| * Internal private functions |
| ********************************************************/ |
| |
| private void logStateAndMessage(Message message, String state) { |
| if (mLogMessages) { |
| //long now = SystemClock.elapsedRealtimeNanos(); |
| //String ts = String.format("[%,d us]", now/1000); |
| |
| loge( " " + state + " " + getLogRecString(message)); |
| } |
| } |
| |
| /** |
| * Return the additional string to be logged by LogRec, default |
| * |
| * @param msg that was processed |
| * @return information to be logged as a String |
| */ |
| protected String getLogRecString(Message msg) { |
| WifiConfiguration config; |
| StringBuilder sb = new StringBuilder(); |
| if (mScreenOn) { |
| sb.append("!"); |
| } |
| sb.append(smToString(msg)); |
| |
| switch (msg.what) { |
| case CMD_START_SCAN: |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg1)); |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg2)); |
| if (mIsScanOngoing) sb.append(" onGoing"); |
| if (mIsFullScanOngoing) sb.append(" full"); |
| if (lastStartScanTimeStamp != 0) { |
| sb.append(" started:").append(lastStartScanTimeStamp); |
| } |
| if (lastScanDuration != 0) { |
| sb.append(" dur:").append(lastScanDuration); |
| } |
| 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)); |
| if (lastScanFreqs != null) sb.append(" ").append(lastScanFreqs); |
| break; |
| 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 WifiMonitor.ASSOCIATION_REJECTION_EVENT: |
| sb.append(" "); |
| sb.append(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.SCAN_RESULTS_EVENT: |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg1)); |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg2)); |
| if (mScanResults != null) { |
| sb.append(mScanResults.size()); |
| } |
| if (lastScanDuration != 0) { |
| sb.append(" dur:").append(lastScanDuration); |
| } |
| 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()); |
| } |
| 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()); |
| } |
| if (linkDebouncing) { |
| sb.append(" debounce"); |
| } |
| break; |
| case WifiMonitor.SSID_TEMP_DISABLED: |
| case WifiMonitor.SSID_REENABLED: |
| sb.append(" nid=").append(msg.arg1); |
| if (msg.obj != null) { |
| sb.append(" ").append((String)msg.obj); |
| } |
| 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)); |
| 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)); |
| break; |
| case CMD_AUTO_CONNECT: |
| case WifiManager.CONNECT_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()); |
| if (config.visibility != null) { |
| sb.append(" [").append(config.visibility.num24); |
| sb.append(" ,").append(config.visibility.rssi24); |
| sb.append(" ;").append(config.visibility.num5); |
| sb.append(" ,").append(config.visibility.rssi5).append("]"); |
| } |
| } |
| break; |
| case CMD_AUTO_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) { |
| sb.append(" rssi=").append(result.level); |
| sb.append(" freq=").append(result.frequency); |
| sb.append(" ").append(result.BSSID); |
| } |
| break; |
| case CMD_ENABLE_NETWORK: |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg1)); |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg2)); |
| String key = mWifiConfigStore.getLastSelectedConfiguration(); |
| if (key != null) { |
| sb.append(" ").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(mWifiConfigStore.getConfiguredNetworksSize()); |
| break; |
| case DhcpStateMachine.CMD_POST_DHCP_ACTION: |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg1)); |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg2)); |
| if (msg.arg1 == DhcpStateMachine.DHCP_SUCCESS) { |
| sb.append(" OK "); |
| } else if (msg.arg1 == DhcpStateMachine.DHCP_FAILURE) { |
| sb.append(" FAIL "); |
| } |
| if (mLinkProperties != null) { |
| if (mLinkProperties.hasIPv4Address()) { |
| sb.append(" v4"); |
| } |
| if (mLinkProperties.hasGlobalIPv6Address()) { |
| sb.append(" v6"); |
| } |
| if (mLinkProperties.hasIPv4DefaultRoute()) { |
| sb.append(" v4r"); |
| } |
| if (mLinkProperties.hasIPv6DefaultRoute()) { |
| sb.append(" v6r"); |
| } |
| if (mLinkProperties.hasIPv4DnsServer()) { |
| sb.append(" v4dns"); |
| } |
| if (mLinkProperties.hasIPv6DnsServer()) { |
| sb.append(" v6dns"); |
| } |
| } |
| 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.numConnectionFailures; |
| 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(mWifiConfigStore.getMaxDhcpRetries())); |
| break; |
| case CMD_UPDATE_LINKPROPERTIES: |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg1)); |
| sb.append(" "); |
| sb.append(Integer.toString(msg.arg2)); |
| if (mLinkProperties != null) { |
| if (mLinkProperties.hasIPv4Address()) { |
| sb.append(" v4"); |
| } |
| if (mLinkProperties.hasGlobalIPv6Address()) { |
| sb.append(" v6"); |
| } |
| if (mLinkProperties.hasIPv4DefaultRoute()) { |
| sb.append(" v4r"); |
| } |
| if (mLinkProperties.hasIPv6DefaultRoute()) { |
| sb.append(" v6r"); |
| } |
| if (mLinkProperties.hasIPv4DnsServer()) { |
| sb.append(" v4dns"); |
| } |
| if (mLinkProperties.hasIPv6DnsServer()) { |
| sb.append(" v6dns"); |
| } |
| } |
| 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 (PDBG) { |
| loge(" handleScreenStateChanged Enter: screenOn=" + screenOn |
| + "mCurrentScanAlarmMs = " + Long.toString(mCurrentScanAlarmMs) |
| + " mUserWantsSuspendOpt=" + mUserWantsSuspendOpt |
| + " autojoin " + mFrameworkAutoJoin |
| + " state " + getCurrentState().getName() |
| + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); |
| } |
| enableRssiPolling(screenOn); |
| if (mBackgroundScanSupported) { |
| enableBackgroundScanCommand(screenOn == false); |
| } |
| |
| if (screenOn) enableAllNetworks(); |
| if (mUserWantsSuspendOpt.get()) { |
| if (screenOn) { |
| sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 0, 0); |
| } else { |
| //Allow 2s for suspend optimizations to be set |
| mSuspendWakeLock.acquire(2000); |
| sendMessage(CMD_SET_SUSPEND_OPT_ENABLED, 1, 0); |
| } |
| } |
| mScreenBroadcastReceived.set(true); |
| |
| if (screenOn) { |
| fullBandConnectedTimeIntervalMilli = 20 * 1000; //start at 20 seconds interval |
| if (mFrameworkAutoJoin.get()) { |
| //start the scan alarm so as to enable autojoin |
| if (getCurrentState() == mConnectedState) { |
| mCurrentScanAlarmMs = mConnectedScanPeriodMs; |
| } else if (getCurrentState() == mDisconnectedState) { |
| mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; |
| //kick a scan right now |
| startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); |
| } else if (getCurrentState() == mDisconnectingState) { |
| mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; |
| //kick a scan right now |
| startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); |
| } |
| } |
| setScanAlarm(true); |
| |
| } else { |
| setScanAlarm(false); |
| } |
| |
| if (DBG) log("handleScreenStateChanged Exit: " + screenOn); |
| } |
| |
| private void checkAndSetConnectivityInstance() { |
| if (mCm == null) { |
| mCm = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); |
| } |
| } |
| |
| private boolean startTethering(ArrayList<String> available) { |
| |
| boolean wifiAvailable = false; |
| |
| checkAndSetConnectivityInstance(); |
| |
| String[] wifiRegexs = mCm.getTetherableWifiRegexs(); |
| |
| for (String intf : available) { |
| for (String regex : wifiRegexs) { |
| if (intf.matches(regex)) { |
| |
| InterfaceConfiguration ifcg = null; |
| try { |
| ifcg = mNwService.getInterfaceConfig(intf); |
| if (ifcg != null) { |
| /* IP/netmask: 192.168.43.1/255.255.255.0 */ |
| ifcg.setLinkAddress(new LinkAddress( |
| NetworkUtils.numericToInetAddress("192.168.43.1"), 24)); |
| ifcg.setInterfaceUp(); |
| |
| mNwService.setInterfaceConfig(intf, ifcg); |
| } |
| } catch (Exception e) { |
| loge("Error configuring interface " + intf + ", :" + e); |
| return false; |
| } |
| |
| if(mCm.tether(intf) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { |
| loge("Error tethering on " + intf); |
| return false; |
| } |
| mTetherInterfaceName = intf; |
| return true; |
| } |
| } |
| } |
| // We found no interfaces to tether |
| return false; |
| } |
| |
| private void stopTethering() { |
| |
| checkAndSetConnectivityInstance(); |
| |
| /* Clear the interface config to allow dhcp correctly configure new |
| ip settings */ |
| InterfaceConfiguration ifcg = null; |
| try { |
| ifcg = mNwService.getInterfaceConfig(mTetherInterfaceName); |
| if (ifcg != null) { |
| ifcg.setLinkAddress( |
| new LinkAddress(NetworkUtils.numericToInetAddress("0.0.0.0"), 0)); |
| mNwService.setInterfaceConfig(mTetherInterfaceName, ifcg); |
| } |
| } catch (Exception e) { |
| loge("Error resetting interface " + mTetherInterfaceName + ", :" + e); |
| } |
| |
| if (mCm.untether(mTetherInterfaceName) != ConnectivityManager.TETHER_ERROR_NO_ERROR) { |
| loge("Untether initiate failed!"); |
| } |
| } |
| |
| private boolean isWifiTethered(ArrayList<String> active) { |
| |
| checkAndSetConnectivityInstance(); |
| |
| String[] wifiRegexs = mCm.getTetherableWifiRegexs(); |
| for (String intf : active) { |
| for (String regex : wifiRegexs) { |
| if (intf.matches(regex)) { |
| return true; |
| } |
| } |
| } |
| // We found no interfaces that are tethered |
| return false; |
| } |
| |
| /** |
| * Set the country code from the system setting value, if any. |
| */ |
| private void setCountryCode() { |
| String countryCode = Settings.Global.getString(mContext.getContentResolver(), |
| Settings.Global.WIFI_COUNTRY_CODE); |
| if (countryCode != null && !countryCode.isEmpty()) { |
| setCountryCode(countryCode, false); |
| } else { |
| //use driver default |
| } |
| } |
| |
| /** |
| * Set the frequency band from the system setting value, if any. |
| */ |
| private void setFrequencyBand() { |
| int band = Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.WIFI_FREQUENCY_BAND, WifiManager.WIFI_FREQUENCY_BAND_AUTO); |
| setFrequencyBand(band, false); |
| } |
| |
| private void setSuspendOptimizationsNative(int reason, boolean enabled) { |
| if (DBG) { |
| 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 (DBG) { |
| 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(true); |
| } |
| } else { |
| mSuspendOptNeedsDisabled |= reason; |
| mWifiNative.setSuspendOptimizations(false); |
| } |
| } |
| |
| private void setSuspendOptimizations(int reason, boolean enabled) { |
| if (DBG) log("setSuspendOptimizations: " + reason + " " + enabled); |
| if (enabled) { |
| mSuspendOptNeedsDisabled &= ~reason; |
| } else { |
| mSuspendOptNeedsDisabled |= reason; |
| } |
| if (DBG) log("mSuspendOptNeedsDisabled " + mSuspendOptNeedsDisabled); |
| } |
| |
| private void setWifiState(int wifiState) { |
| final int previousWifiState = mWifiState.get(); |
| |
| try { |
| if (wifiState == WIFI_STATE_ENABLED) { |
| mBatteryStats.noteWifiOn(); |
| } else if (wifiState == WIFI_STATE_DISABLED) { |
| mBatteryStats.noteWifiOff(); |
| } |
| } catch (RemoteException e) { |
| loge("Failed to note battery stats in wifi"); |
| } |
| |
| mWifiState.set(wifiState); |
| |
| if (DBG) 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); |
| } |
| |
| private void setWifiApState(int wifiApState) { |
| final int previousWifiApState = mWifiApState.get(); |
| |
| try { |
| if (wifiApState == WIFI_AP_STATE_ENABLED) { |
| mBatteryStats.noteWifiOn(); |
| } else if (wifiApState == WIFI_AP_STATE_DISABLED) { |
| mBatteryStats.noteWifiOff(); |
| } |
| } catch (RemoteException e) { |
| loge("Failed to note battery stats in wifi"); |
| } |
| |
| // Update state |
| mWifiApState.set(wifiApState); |
| |
| if (DBG) log("setWifiApState: " + syncGetWifiApStateByName()); |
| |
| final Intent intent = new Intent(WifiManager.WIFI_AP_STATE_CHANGED_ACTION); |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); |
| intent.putExtra(WifiManager.EXTRA_WIFI_AP_STATE, wifiApState); |
| intent.putExtra(WifiManager.EXTRA_PREVIOUS_WIFI_AP_STATE, previousWifiApState); |
| mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); |
| } |
| |
| private static final String ID_STR = "id="; |
| private static final String BSSID_STR = "bssid="; |
| private static final String FREQ_STR = "freq="; |
| private static final String LEVEL_STR = "level="; |
| private static final String TSF_STR = "tsf="; |
| private static final String FLAGS_STR = "flags="; |
| private static final String SSID_STR = "ssid="; |
| private static final String DELIMITER_STR = "===="; |
| private static final String END_STR = "####"; |
| |
| /** |
| * Format: |
| * |
| * id=1 |
| * bssid=68:7f:76:d7:1a:6e |
| * freq=2412 |
| * level=-44 |
| * tsf=1344626243700342 |
| * flags=[WPA2-PSK-CCMP][WPS][ESS] |
| * ssid=zfdy |
| * ==== |
| * id=2 |
| * bssid=68:5f:74:d7:1a:6f |
| * freq=5180 |
| * level=-73 |
| * tsf=1344626243700373 |
| * flags=[WPA2-PSK-CCMP][WPS][ESS] |
| * ssid=zuby |
| * ==== |
| */ |
| private void setScanResults() { |
| String bssid = ""; |
| int level = 0; |
| int freq = 0; |
| long tsf = 0; |
| String flags = ""; |
| WifiSsid wifiSsid = null; |
| String scanResults; |
| String tmpResults; |
| StringBuffer scanResultsBuf = new StringBuffer(); |
| int sid = 0; |
| |
| while (true) { |
| tmpResults = mWifiNative.scanResults(sid); |
| if (TextUtils.isEmpty(tmpResults)) break; |
| scanResultsBuf.append(tmpResults); |
| scanResultsBuf.append("\n"); |
| String[] lines = tmpResults.split("\n"); |
| sid = -1; |
| for (int i=lines.length - 1; i >= 0; i--) { |
| if (lines[i].startsWith(END_STR)) { |
| break; |
| } else if (lines[i].startsWith(ID_STR)) { |
| try { |
| sid = Integer.parseInt(lines[i].substring(ID_STR.length())) + 1; |
| } catch (NumberFormatException e) { |
| // Nothing to do |
| } |
| break; |
| } |
| } |
| if (sid == -1) break; |
| } |
| |
| scanResults = scanResultsBuf.toString(); |
| if (TextUtils.isEmpty(scanResults)) { |
| return; |
| } |
| |
| // note that all these splits and substrings keep references to the original |
| // huge string buffer while the amount we really want is generally pretty small |
| // so make copies instead (one example b/11087956 wasted 400k of heap here). |
| synchronized(mScanResultCache) { |
| mScanResults = new ArrayList<ScanResult>(); |
| String[] lines = scanResults.split("\n"); |
| final int bssidStrLen = BSSID_STR.length(); |
| final int flagLen = FLAGS_STR.length(); |
| |
| for (String line : lines) { |
| if (line.startsWith(BSSID_STR)) { |
| bssid = new String(line.getBytes(), bssidStrLen, line.length() - bssidStrLen); |
| } else if (line.startsWith(FREQ_STR)) { |
| try { |
| freq = Integer.parseInt(line.substring(FREQ_STR.length())); |
| } catch (NumberFormatException e) { |
| freq = 0; |
| } |
| } else if (line.startsWith(LEVEL_STR)) { |
| try { |
| level = Integer.parseInt(line.substring(LEVEL_STR.length())); |
| /* some implementations avoid negative values by adding 256 |
| * so we need to adjust for that here. |
| */ |
| if (level > 0) level -= 256; |
| } catch(NumberFormatException e) { |
| level = 0; |
| } |
| } else if (line.startsWith(TSF_STR)) { |
| try { |
| tsf = Long.parseLong(line.substring(TSF_STR.length())); |
| } catch (NumberFormatException e) { |
| tsf = 0; |
| } |
| } else if (line.startsWith(FLAGS_STR)) { |
| flags = new String(line.getBytes(), flagLen, line.length() - flagLen); |
| } else if (line.startsWith(SSID_STR)) { |
| wifiSsid = WifiSsid.createFromAsciiEncoded( |
| line.substring(SSID_STR.length())); |
| } else if (line.startsWith(DELIMITER_STR) || line.startsWith(END_STR)) { |
| if (bssid != null) { |
| String ssid = (wifiSsid != null) ? wifiSsid.toString() : WifiSsid.NONE; |
| String key = bssid + ssid; |
| ScanResult scanResult = mScanResultCache.get(key); |
| if (scanResult != null) { |
| scanResult.level = level; |
| scanResult.wifiSsid = wifiSsid; |
| // Keep existing API |
| scanResult.SSID = (wifiSsid != null) ? wifiSsid.toString() : |
| WifiSsid.NONE; |
| scanResult.capabilities = flags; |
| scanResult.frequency = freq; |
| scanResult.timestamp = tsf; |
| scanResult.seen = System.currentTimeMillis(); |
| } else { |
| scanResult = |
| new ScanResult( |
| wifiSsid, bssid, flags, level, freq, tsf); |
| mScanResultCache.put(key, scanResult); |
| } |
| mScanResults.add(scanResult); |
| } |
| bssid = null; |
| level = 0; |
| freq = 0; |
| tsf = 0; |
| flags = ""; |
| wifiSsid = null; |
| } |
| } |
| } |
| boolean attemptAutoJoin = true; |
| if (getCurrentState() == mRoamingState |
| || getCurrentState() == mObtainingIpState |
| || linkDebouncing) { |
| // Dont attempt auto-joining again while we are already attempting to join |
| // and/or obtaining Ip address |
| attemptAutoJoin = false; |
| } |
| mWifiAutoJoinController.newSupplicantResults(attemptAutoJoin); |
| if (linkDebouncing) { |
| // If debouncing, we dont re-select a SSID or BSSID hence |
| // there is no need to call the network selection code |
| // in WifiAutoJoinController, instead, |
| // just try to reconnect to the same SSID by triggering a roam |
| sendMessage(CMD_AUTO_ROAM, mLastNetworkId, 1, null); |
| } |
| } |
| |
| /* |
| * Fetch RSSI, linkspeed, and frequency on current connection |
| */ |
| private void fetchRssiLinkSpeedAndFrequencyNative() { |
| int newRssi = -1; |
| int newLinkSpeed = -1; |
| int newFrequency = -1; |
| |
| String signalPoll = mWifiNative.signalPoll(); |
| |
| if (signalPoll != null) { |
| String[] lines = signalPoll.split("\n"); |
| for (String line : lines) { |
| String[] prop = line.split("="); |
| if (prop.length < 2) continue; |
| try { |
| if (prop[0].equals("RSSI")) { |
| newRssi = Integer.parseInt(prop[1]); |
| } else if (prop[0].equals("LINKSPEED")) { |
| newLinkSpeed = Integer.parseInt(prop[1]); |
| } else if (prop[0].equals("FREQUENCY")) { |
| newFrequency = Integer.parseInt(prop[1]); |
| } |
| } catch (NumberFormatException e) { |
| //Ignore, defaults on rssi and linkspeed are assigned |
| } |
| } |
| } |
| |
| if (PDBG) { |
| loge("fetchRssiLinkSpeedAndFrequencyNative rssi=" |
| + Integer.toString(newRssi) + " linkspeed=" |
| + Integer.toString(newLinkSpeed)); |
| } |
| |
| if (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) { |
| sendRssiChangeBroadcast(newRssi); |
| } |
| mLastSignalLevel = newSignalLevel; |
| } else { |
| mWifiInfo.setRssi(WifiInfo.INVALID_RSSI); |
| } |
| |
| if (newLinkSpeed != -1) { |
| mWifiInfo.setLinkSpeed(newLinkSpeed); |
| } |
| if (newFrequency > 0) { |
| if (ScanResult.is24GHz(newFrequency)) { |
| mWifiConnectionStatistics.num5GhzConnected++; |
| } |
| if (ScanResult.is24GHz(newFrequency)) { |
| mWifiConnectionStatistics.num24GhzConnected++; |
| } |
| mWifiInfo.setFrequency(newFrequency); |
| } |
| mWifiConfigStore.updateConfiguration(mWifiInfo); |
| } |
| |
| /** |
| * Determine if we need to switch network: |
| * - the delta determine the urgency to switch and/or or the expected evilness of the disruption |
| * - match the uregncy of the switch versus the packet usage at the interface |
| */ |
| boolean shouldSwitchNetwork(int networkDelta) { |
| int delta; |
| if (networkDelta <= 0) { |
| return false; |
| } |
| delta = networkDelta; |
| if (mWifiInfo != null) { |
| // TODO: Look at per AC packet count, do not switch if VO/VI traffic is present |
| // TODO: at the interface. We should also discriminate between ucast and mcast, |
| // TODO: since the rxSuccessRate include all the bonjour and Ipv6 |
| // TODO: broadcasts |
| if ((mWifiInfo.txSuccessRate > 20) || (mWifiInfo.rxSuccessRate > 80)) { |
| delta -= 999; |
| } else if ((mWifiInfo.txSuccessRate > 5) || (mWifiInfo.rxSuccessRate > 30)) { |
| delta -= 6; |
| } |
| loge("WifiStateMachine shouldSwitchNetwork " |
| + " txSuccessRate=" + String.format( "%.2f", mWifiInfo.txSuccessRate) |
| + " rxSuccessRate=" +String.format( "%.2f", mWifiInfo.rxSuccessRate) |
| + " delta " + networkDelta + " -> " + delta); |
| } else { |
| loge("WifiStateMachine shouldSwitchNetwork " |
| + " delta " + networkDelta + " -> " + delta); |
| } |
| if (delta > 0) { |
| return true; |
| } |
| return false; |
| } |
| |
| private void calculateWifiScore(WifiLinkLayerStats stats) { |
| |
| if (stats == null || mWifiLinkLayerStatsSupported <= 0) { |
| long mTxPkts = TrafficStats.getTxPackets(mInterfaceName); |
| long mRxPkts = TrafficStats.getRxPackets(mInterfaceName); |
| mWifiInfo.updatePacketRates(mTxPkts, mRxPkts); |
| |
| } else { |
| mWifiInfo.updatePacketRates(stats); |
| } |
| int score = 56; //starting score, temporarily hardcoded in between 50 and 60 |
| boolean isBadLinkspeed = (mWifiInfo.is24GHz() |
| && mWifiInfo.getLinkSpeed() < 6) |
| || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() < 12); |
| boolean isGoodLinkspeed = (mWifiInfo.is24GHz() |
| && mWifiInfo.getLinkSpeed() >= 24) |
| || (mWifiInfo.is5GHz() && mWifiInfo.getLinkSpeed() >= 48); |
| |
| |
| /** |
| * We want to make sure that we use the 24GHz RSSI thresholds is |
| * there are 2.4GHz scan results |
| * otherwise we end up lowering the score based on 5GHz values |
| * which may cause a switch to LTE before roaming has a chance to try 2.4GHz |
| * We also might unblacklist the configuation based on 2.4GHz |
| * thresholds but joining 5GHz anyhow, and failing over to 2.4GHz because 5GHz is not good |
| */ |
| boolean use24Thresholds = false; |
| boolean homeNetworkBoost = false; |
| WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); |
| if (currentConfiguration != null |
| && currentConfiguration.scanResultCache != null) { |
| currentConfiguration.setVisibility(12000); |
| if (currentConfiguration.visibility != null) { |
| if (currentConfiguration.visibility.rssi24 != WifiConfiguration.INVALID_RSSI |
| && currentConfiguration.visibility.rssi24 |
| >= (currentConfiguration.visibility.rssi5-2)) { |
| use24Thresholds = true; |
| } |
| } |
| if (currentConfiguration.scanResultCache.size() <= 4 |
| && currentConfiguration.allowedKeyManagement.cardinality() == 1 |
| && currentConfiguration.allowedKeyManagement. |
| get(WifiConfiguration.KeyMgmt.WPA_PSK) == true) { |
| // A PSK network with less than 4 known BSSIDs |
| // This is most likely a home network and thus we want to stick to wifi more |
| homeNetworkBoost = true; |
| } |
| } |
| |
| int rssi = mWifiInfo.getRssi() - 6 * mAggressiveHandover |
| + (homeNetworkBoost ? WifiConfiguration.HOME_NETWORK_RSSI_BOOST : 0); |
| boolean is24GHz = use24Thresholds || mWifiInfo.is24GHz(); |
| |
| boolean isBadRSSI = (is24GHz && rssi < WifiConfiguration.BAD_RSSI_24 ) |
| || (!is24GHz && rssi < WifiConfiguration.BAD_RSSI_5); |
| boolean isLowRSSI = (is24GHz && rssi < WifiConfiguration.LOW_RSSI_24) |
| || (!is24GHz && mWifiInfo.getRssi() < WifiConfiguration.LOW_RSSI_5); |
| boolean isHighRSSI = (is24GHz && rssi >= WifiConfiguration.GOOD_RSSI_24) |
| || (!is24GHz && mWifiInfo.getRssi() >= WifiConfiguration.GOOD_RSSI_5); |
| |
| if (PDBG) { |
| String rssiStatus = ""; |
| if (isBadRSSI) rssiStatus += " badRSSI "; |
| else if (isHighRSSI) rssiStatus += " highRSSI "; |
| else if (isLowRSSI) rssiStatus += " lowRSSI "; |
| if (isBadLinkspeed) rssiStatus += " lowSpeed "; |
| loge("calculateWifiScore freq=" + Integer.toString(mWifiInfo.getFrequency()) |
| + " speed=" + Integer.toString(mWifiInfo.getLinkSpeed()) |
| + " score=" + Integer.toString(mWifiInfo.score) |
| + rssiStatus |
| + " -> txbadrate=" + String.format( "%.2f", mWifiInfo.txBadRate ) |
| + " txgoodrate=" + String.format("%.2f", mWifiInfo.txSuccessRate) |
| + " txretriesrate=" + String.format("%.2f", mWifiInfo.txRetriesRate) |
| + " rxrate=" + String.format("%.2f", mWifiInfo.rxSuccessRate) |
| ); |
| } |
| |
| if ((mWifiInfo.txBadRate >= 1) && (mWifiInfo.txSuccessRate < 3) |
| && (isBadRSSI || isLowRSSI)) { |
| // Link is stuck |
| if (mWifiInfo.linkStuckCount < 5) |
| mWifiInfo.linkStuckCount += 1; |
| if (PDBG) loge(" bad link -> stuck count =" |
| + Integer.toString(mWifiInfo.linkStuckCount)); |
| } else if (mWifiInfo.txSuccessRate > 2 || mWifiInfo.txBadRate < 0.1) { |
| if (mWifiInfo.linkStuckCount > 0) |
| mWifiInfo.linkStuckCount -= 1; |
| if (PDBG) loge(" good link -> stuck count =" |
| + Integer.toString(mWifiInfo.linkStuckCount)); |
| } |
| |
| if (mWifiInfo.linkStuckCount > 1) { |
| // Once link gets stuck for more than 3 seconds, start reducing the score |
| score = score - 2 * (mWifiInfo.linkStuckCount - 1); |
| } |
| |
| if (isBadLinkspeed) { |
| score -= 4; |
| if (PDBG) loge(" isBadLinkspeed ---> score=" + Integer.toString(score)); |
| } else if ((isGoodLinkspeed) && (mWifiInfo.txSuccessRate > 5)) { |
| score += 4; // So as bad rssi alone dont kill us |
| } |
| |
| if (isBadRSSI) { |
| if (mWifiInfo.badRssiCount < 7) |
| mWifiInfo.badRssiCount += 1; |
| } else if (isLowRSSI) { |
| mWifiInfo.lowRssiCount = 1; // Dont increment |
| if (mWifiInfo.badRssiCount > 0) { |
| mWifiInfo.badRssiCount -= 1; |
| } |
| } else { |
| mWifiInfo.badRssiCount = 0; |
| mWifiInfo.lowRssiCount = 0; |
| } |
| |
| score -= mWifiInfo.badRssiCount * 2 + mWifiInfo.lowRssiCount ; |
| |
| if (PDBG) loge(" badRSSI count" + Integer.toString(mWifiInfo.badRssiCount) |
| + " lowRSSI count" + Integer.toString(mWifiInfo.lowRssiCount) |
| + " --> score " + Integer.toString(score)); |
| |
| |
| if (isHighRSSI) { |
| score += 5; |
| if (PDBG) loge(" isHighRSSI ---> score=" + Integer.toString(score)); |
| } |
| |
| //sanitize boundaries |
| if (score > NetworkAgent.WIFI_BASE_SCORE) |
| score = NetworkAgent.WIFI_BASE_SCORE; |
| if (score < 0) |
| score = 0; |
| |
| //report score |
| if (score != mWifiInfo.score) { |
| if (DBG) { |
| loge("calculateWifiScore() report new score " + Integer.toString(score)); |
| } |
| mWifiInfo.score = score; |
| if (mNetworkAgent != null) { |
| mNetworkAgent.sendNetworkScore(score); |
| } |
| } |
| } |
| |
| public double getTxPacketRate() { |
| if (mWifiInfo != null) { |
| return mWifiInfo.txSuccessRate; |
| } |
| return -1; |
| } |
| |
| public double getRxPacketRate() { |
| if (mWifiInfo != null) { |
| return mWifiInfo.rxSuccessRate; |
| } |
| return -1; |
| } |
| |
| /** |
| * Fetch TX packet counters on current connection |
| */ |
| private void fetchPktcntNative(RssiPacketCountInfo info) { |
| String pktcntPoll = mWifiNative.pktcntPoll(); |
| |
| if (pktcntPoll != null) { |
| String[] lines = pktcntPoll.split("\n"); |
| for (String line : lines) { |
| String[] prop = line.split("="); |
| if (prop.length < 2) continue; |
| try { |
| if (prop[0].equals("TXGOOD")) { |
| info.txgood = Integer.parseInt(prop[1]); |
| } else if (prop[0].equals("TXBAD")) { |
| info.txbad = Integer.parseInt(prop[1]); |
| } |
| } catch (NumberFormatException e) { |
| // Ignore |
| } |
| } |
| } |
| } |
| |
| private boolean isProvisioned(LinkProperties lp) { |
| // LinkProperties#isProvisioned returns true even if all we have is an IPv4 address and no |
| // connectivity. This turns out not to be very useful, because we can't distinguish it from |
| // a state where we have an IPv4 address assigned to the interface but are still running |
| // DHCP. |
| // TODO: Fix LinkProperties and remove this function. |
| if (mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { |
| return lp.hasIPv4Address(); |
| } else { |
| return (lp.hasIPv4Address() && lp.hasIPv4DefaultRoute() && lp.hasIPv4DnsServer()) || |
| (lp.hasGlobalIPv6Address() && lp.hasIPv6DefaultRoute() && lp.hasIPv6DnsServer()); |
| } |
| } |
| |
| /** |
| * Updates mLinkProperties by merging information from various sources. |
| * |
| * This is needed because the information in mLinkProperties comes from multiple sources (DHCP, |
| * netlink, static configuration, ...). When one of these sources of information has updated |
| * link properties, we can't just assign them to mLinkProperties or we'd lose track of the |
| * information that came from other sources. Instead, when one of those sources has new |
| * information, we update the object that tracks the information from that source and then |
| * call this method to apply the change to mLinkProperties. |
| * |
| * The information in mLinkProperties is currently obtained as follows: |
| * - Interface name: set in the constructor. |
| * - IPv4 and IPv6 addresses: netlink, passed in by mNetlinkTracker. |
| * - IPv4 routes, DNS servers, and domains: DHCP. |
| * - IPv6 routes and DNS servers: netlink, passed in by mNetlinkTracker. |
| * - HTTP proxy: the wifi config store. |
| */ |
| private void updateLinkProperties(int reason) { |
| LinkProperties newLp = new LinkProperties(); |
| |
| // Interface name and proxy are locally configured. |
| newLp.setInterfaceName(mInterfaceName); |
| newLp.setHttpProxy(mWifiConfigStore.getProxyProperties(mLastNetworkId)); |
| |
| // IPv4/v6 addresses, IPv6 routes and IPv6 DNS servers come from netlink. |
| LinkProperties netlinkLinkProperties = mNetlinkTracker.getLinkProperties(); |
| newLp.setLinkAddresses(netlinkLinkProperties.getLinkAddresses()); |
| for (RouteInfo route : netlinkLinkProperties.getRoutes()) { |
| newLp.addRoute(route); |
| } |
| for (InetAddress dns : netlinkLinkProperties.getDnsServers()) { |
| newLp.addDnsServer(dns); |
| } |
| |
| // IPv4 routes, DNS servers and domains come from mDhcpResults. |
| synchronized (mDhcpResultsLock) { |
| // Even when we're using static configuration, we don't need to look at the config |
| // store, because static IP configuration also populates mDhcpResults. |
| if ((mDhcpResults != null) && (mDhcpResults.linkProperties != null)) { |
| LinkProperties lp = mDhcpResults.linkProperties; |
| for (RouteInfo route : lp.getRoutes()) { |
| newLp.addRoute(route); |
| } |
| for (InetAddress dns : lp.getDnsServers()) { |
| newLp.addDnsServer(dns); |
| } |
| newLp.setDomains(lp.getDomains()); |
| } |
| } |
| |
| final boolean linkChanged = !newLp.equals(mLinkProperties); |
| final boolean wasProvisioned = isProvisioned(mLinkProperties); |
| final boolean isProvisioned = isProvisioned(newLp); |
| final DetailedState detailedState = getNetworkDetailedState(); |
| |
| if (linkChanged) { |
| if (DBG) { |
| log("Link configuration changed for netId: " + mLastNetworkId |
| + " old: " + mLinkProperties + " new: " + newLp); |
| } |
| mLinkProperties = newLp; |
| if (mNetworkAgent != null) mNetworkAgent.sendLinkProperties(mLinkProperties); |
| } |
| |
| if (DBG) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("updateLinkProperties nid: " + mLastNetworkId); |
| sb.append(" state: " + detailedState); |
| sb.append(" reason: " + smToString(reason)); |
| |
| if (mLinkProperties != null) { |
| if (mLinkProperties.hasIPv4Address()) { |
| sb.append(" v4"); |
| } |
| if (mLinkProperties.hasGlobalIPv6Address()) { |
| sb.append(" v6"); |
| } |
| if (mLinkProperties.hasIPv4DefaultRoute()) { |
| sb.append(" v4r"); |
| } |
| if (mLinkProperties.hasIPv6DefaultRoute()) { |
| sb.append(" v6r"); |
| } |
| if (mLinkProperties.hasIPv4DnsServer()) { |
| sb.append(" v4dns"); |
| } |
| if (mLinkProperties.hasIPv6DnsServer()) { |
| sb.append(" v6dns"); |
| } |
| if (isProvisioned) { |
| sb.append(" isprov"); |
| } |
| } |
| loge(sb.toString()); |
| } |
| |
| // If we just configured or lost IP configuration, do the needful. |
| // We don't just call handleSuccessfulIpConfiguration() or handleIpConfigurationLost() |
| // here because those should only be called if we're attempting to connect or already |
| // connected, whereas updateLinkProperties can be called at any time. |
| switch (reason) { |
| case DhcpStateMachine.DHCP_SUCCESS: |
| case CMD_STATIC_IP_SUCCESS: |
| // IPv4 provisioning succeded. Advance to connected state. |
| sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); |
| if (!isProvisioned) { |
| // Can never happen unless DHCP reports success but isProvisioned thinks the |
| // resulting configuration is invalid (e.g., no IPv4 address, or the state in |
| // mLinkProperties is out of sync with reality, or there's a bug in this code). |
| // TODO: disconnect here instead. If our configuration is not usable, there's no |
| // point in staying connected, and if mLinkProperties is out of sync with |
| // reality, that will cause problems in the future. |
| loge("IPv4 config succeeded, but not provisioned"); |
| } |
| break; |
| |
| case DhcpStateMachine.DHCP_FAILURE: |
| // DHCP failed. If we're not already provisioned, give up and disconnect. |
| // If we're already provisioned (e.g., IPv6-only network), stay connected. |
| if (!isProvisioned) { |
| sendMessage(CMD_IP_CONFIGURATION_LOST); |
| } else { |
| // DHCP failed, but we're provisioned (e.g., if we're on an IPv6-only network). |
| sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); |
| |
| // To be sure we don't get stuck with a non-working network if all we had is |
| // IPv4, remove the IPv4 address from the interface (since we're using DHCP, |
| // and DHCP failed). If we had an IPv4 address before, the deletion of the |
| // address will cause a CMD_UPDATE_LINKPROPERTIES. If the IPv4 address was |
| // necessary for provisioning, its deletion will cause us to disconnect. |
| // |
| // This should never happen, because a DHCP failure will have empty DhcpResults |
| // and thus empty LinkProperties, and isProvisioned will not return true if |
| // we're using DHCP and don't have an IPv4 default route. So for now it's only |
| // here for extra redundancy. However, it will increase robustness if we move |
| // to getting IPv4 routes from netlink as well. |
| loge("DHCP failure: provisioned, should not happen! Clearing IPv4 address."); |
| try { |
| InterfaceConfiguration ifcg = new InterfaceConfiguration(); |
| ifcg.setLinkAddress(new LinkAddress("0.0.0.0/0")); |
| ifcg.setInterfaceUp(); |
| mNwService.setInterfaceConfig(mInterfaceName, ifcg); |
| } catch (RemoteException e) { |
| sendMessage(CMD_IP_CONFIGURATION_LOST); |
| } |
| } |
| break; |
| |
| case CMD_STATIC_IP_FAILURE: |
| // Static configuration was invalid, or an error occurred in applying it. Give up. |
| sendMessage(CMD_IP_CONFIGURATION_LOST); |
| break; |
| |
| case CMD_UPDATE_LINKPROPERTIES: |
| // IP addresses, DNS servers, etc. changed. Act accordingly. |
| if (wasProvisioned && !isProvisioned) { |
| // We no longer have a usable network configuration. Disconnect. |
| sendMessage(CMD_IP_CONFIGURATION_LOST); |
| } else if (!wasProvisioned && isProvisioned) { |
| // We have a usable IPv6-only config. Advance to connected state. |
| sendMessage(CMD_IP_CONFIGURATION_SUCCESSFUL); |
| } |
| if (linkChanged && getNetworkDetailedState() == DetailedState.CONNECTED) { |
| // If anything has changed and we're already connected, send out a notification. |
| sendLinkConfigurationChangedBroadcast(); |
| } |
| break; |
| } |
| } |
| |
| /** |
| * Clears all our link properties. |
| */ |
| private void clearLinkProperties() { |
| // If the network used DHCP, clear the LinkProperties we stored in the config store. |
| if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { |
| mWifiConfigStore.clearLinkProperties(mLastNetworkId); |
| } |
| |
| // Clear the link properties obtained from DHCP and netlink. |
| synchronized (mDhcpResultsLock) { |
| if (mDhcpResults != null && mDhcpResults.linkProperties != null) { |
| mDhcpResults.linkProperties.clear(); |
| } |
| } |
| mNetlinkTracker.clearLinkProperties(); |
| |
| // 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 (PDBG) { |
| loge("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; |
| try { |
| reachable = gateway.isReachable(timeout); |
| } catch (Exception e) { |
| loge("updateDefaultRouteMacAddress exception reaching :" |
| + gateway.getHostAddress()); |
| |
| } finally { |
| if (reachable == true) { |
| |
| address = macAddressFromRoute(gateway.getHostAddress()); |
| if (PDBG) { |
| loge("updateDefaultRouteMacAddress reachable (tried again) :" |
| + gateway.getHostAddress() + " found " + address); |
| } |
| } |
| } |
| } |
| if (address != null) { |
| mWifiConfigStore.setLinkProperties(mLastNetworkId, |
| new LinkProperties(mLinkProperties)); |
| mWifiConfigStore.setDefaultGwMacAddress(mLastNetworkId, address); |
| |
| } |
| } |
| } |
| } |
| return address; |
| } |
| |
| private void sendScanResultsAvailableBroadcast() { |
| noteScanEnd(); |
| Intent intent = new Intent(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION); |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); |
| mContext.sendBroadcastAsUser(intent, UserHandle.ALL); |
| } |
| |
| 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); |
| intent.putExtra(WifiManager.EXTRA_NETWORK_INFO, new NetworkInfo(mNetworkInfo)); |
| intent.putExtra(WifiManager.EXTRA_LINK_PROPERTIES, new LinkProperties (mLinkProperties)); |
| if (bssid != null) |
| intent.putExtra(WifiManager.EXTRA_BSSID, bssid); |
| if (mNetworkInfo.getDetailedState() == DetailedState.VERIFYING_POOR_LINK || |
| mNetworkInfo.getDetailedState() == DetailedState.CONNECTED) { |
| intent.putExtra(WifiManager.EXTRA_WIFI_INFO, new WifiInfo(mWifiInfo)); |
| } |
| 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 void setNetworkDetailedState(NetworkInfo.DetailedState state) { |
| boolean hidden = false; |
| |
| if (linkDebouncing || isRoaming()) { |
| // 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 de-bouncing or 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 debouncing and roaming are completed, we will |
| // set the Network state to where it should be, or leave it as unchanged |
| // |
| hidden = true; |
| } |
| if (DBG) { |
| log("setDetailed state, old =" |
| + mNetworkInfo.getDetailedState() + " and new state=" + state |
| + " hidden=" + hidden); |
| } |
| if (hidden == true) return; |
| |
| if (state != mNetworkInfo.getDetailedState()) { |
| mNetworkInfo.setDetailedState(state, null, mWifiInfo.getSSID()); |
| if (mNetworkAgent != null) { |
| mNetworkAgent.sendNetworkInfo(mNetworkInfo); |
| } |
| } |
| } |
| |
| 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 is only valid when we start connecting |
| if (SupplicantState.isConnecting(state)) { |
| mWifiInfo.setNetworkId(stateChangeResult.networkId); |
| } else { |
| mWifiInfo.setNetworkId(WifiConfiguration.INVALID_NETWORK_ID); |
| } |
| |
| mWifiInfo.setBSSID(stateChangeResult.BSSID); |
| mWifiInfo.setSSID(stateChangeResult.wifiSsid); |
| |
| 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 (DBG) 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()); |
| |
| stopDhcp(); |
| |
| try { |
| mNwService.clearInterfaceAddresses(mInterfaceName); |
| mNwService.disableIpv6(mInterfaceName); |
| } catch (Exception e) { |
| loge("Failed to clear addresses or disable ipv6" + e); |
| } |
| |
| /* Reset data structures */ |
| mWifiInfo.reset(); |
| linkDebouncing = false; |
| /* Reset roaming parameters */ |
| mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; |
| fullBandConnectedTimeIntervalMilli = 20 * 1000; // Start scans at 20 seconds interval |
| |
| setNetworkDetailedState(DetailedState.DISCONNECTED); |
| if (mNetworkAgent != null) { |
| mNetworkAgent.sendNetworkInfo(mNetworkInfo); |
| mNetworkAgent = null; |
| } |
| mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.DISCONNECTED); |
| |
| /* Clear network properties */ |
| clearLinkProperties(); |
| |
| /* Cend event to CM & network change broadcast */ |
| sendNetworkStateChangeBroadcast(mLastBssid); |
| |
| /* Cancel auto roam requests */ |
| autoRoamSetBSSID(mLastNetworkId, "any"); |
| |
| mLastBssid= null; |
| registerDisconnected(); |
| mLastNetworkId = WifiConfiguration.INVALID_NETWORK_ID; |
| } |
| |
| private void handleSupplicantConnectionLoss() { |
| /* Socket connection can be lost when we do a graceful shutdown |
| * or when the driver is hung. Ensure supplicant is stopped here. |
| */ |
| mWifiMonitor.killSupplicant(mP2pSupported); |
| mWifiNative.closeSupplicantConnection(); |
| sendSupplicantConnectionChangedBroadcast(false); |
| setWifiState(WIFI_STATE_DISABLED); |
| } |
| |
| void handlePreDhcpSetup() { |
| mDhcpActive = true; |
| 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( |
| mWifiNative.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(false); |
| |
| stopBatchedScan(); |
| WifiNative.pauseScan(); |
| |
| /* 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 = DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE; |
| msg.obj = mDhcpStateMachine; |
| mWifiP2pChannel.sendMessage(msg); |
| } |
| |
| |
| void startDhcp() { |
| if (mDhcpStateMachine == null) { |
| mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( |
| mContext, WifiStateMachine.this, mInterfaceName); |
| |
| } |
| mDhcpStateMachine.registerForPreDhcpNotification(); |
| mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_START_DHCP); |
| } |
| |
| void renewDhcp() { |
| if (mDhcpStateMachine == null) { |
| mDhcpStateMachine = DhcpStateMachine.makeDhcpStateMachine( |
| mContext, WifiStateMachine.this, mInterfaceName); |
| |
| } |
| mDhcpStateMachine.registerForPreDhcpNotification(); |
| mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_RENEW_DHCP); |
| } |
| |
| void stopDhcp() { |
| if (mDhcpStateMachine != null) { |
| /* In case we were in middle of DHCP operation restore back powermode */ |
| handlePostDhcpSetup(); |
| mDhcpStateMachine.sendMessage(DhcpStateMachine.CMD_STOP_DHCP); |
| } |
| } |
| |
| void handlePostDhcpSetup() { |
| /* Restore power save and suspend optimizations */ |
| setSuspendOptimizationsNative(SUSPEND_DUE_TO_DHCP, true); |
| mWifiNative.setPowerSave(true); |
| |
| mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.BLOCK_DISCOVERY, WifiP2pServiceImpl.DISABLED); |
| |
| // Set the coexistence mode back to its default value |
| mWifiNative.setBluetoothCoexistenceMode( |
| mWifiNative.BLUETOOTH_COEXISTENCE_MODE_SENSE); |
| |
| mDhcpActive = false; |
| |
| startBatchedScan(); |
| WifiNative.restartScan(); |
| } |
| |
| private void handleIPv4Success(DhcpResults dhcpResults, int reason) { |
| |
| if (PDBG) { |
| loge("wifistatemachine handleIPv4Success <" + dhcpResults.toString() |
| + "> linkaddress num " + dhcpResults.linkProperties.getLinkAddresses().size()); |
| for (LinkAddress linkAddress : dhcpResults.linkProperties.getLinkAddresses()) { |
| loge("link address " + linkAddress.toString()); |
| } |
| } |
| |
| synchronized (mDhcpResultsLock) { |
| mDhcpResults = dhcpResults; |
| } |
| LinkProperties linkProperties = dhcpResults.linkProperties; |
| mWifiConfigStore.setLinkProperties(mLastNetworkId, new LinkProperties(linkProperties)); |
| InetAddress addr = null; |
| Iterator<InetAddress> addrs = linkProperties.getAddresses().iterator(); |
| if (addrs.hasNext()) { |
| addr = addrs.next(); |
| } |
| |
| if (isRoaming()) { |
| if (addr instanceof Inet4Address) { |
| int previousAddress = mWifiInfo.getIpAddress(); |
| int newAddress = NetworkUtils.inetAddressToInt((Inet4Address)addr); |
| if (previousAddress != newAddress) { |
| loge("handleIPv4Success, roaming and address changed" + |
| mWifiInfo + " got: " + addr); |
| } else { |
| |
| } |
| } else { |
| loge("handleIPv4Success, roaming and didnt get an IPv4 address" + |
| addr.toString()); |
| |
| |
| } |
| } |
| mWifiInfo.setInetAddress(addr); |
| mWifiInfo.setMeteredHint(dhcpResults.hasMeteredHint()); |
| updateLinkProperties(reason); |
| } |
| |
| private void handleSuccessfulIpConfiguration() { |
| mLastSignalLevel = -1; // Force update of signal strength |
| WifiConfiguration c = getCurrentWifiConfiguration(); |
| // Reset IP failure tracking |
| if (c != null) { |
| c.numConnectionFailures = 0; |
| } |
| } |
| |
| private void handleIPv4Failure(int reason) { |
| synchronized(mDhcpResultsLock) { |
| if (mDhcpResults != null && mDhcpResults.linkProperties != null) { |
| mDhcpResults.linkProperties.clear(); |
| } |
| } |
| if (PDBG) { |
| loge("wifistatemachine handleIPv4Failure"); |
| } |
| updateLinkProperties(reason); |
| } |
| |
| private void handleIpConfigurationLost() { |
| mWifiInfo.setInetAddress(null); |
| mWifiInfo.setMeteredHint(false); |
| |
| mWifiConfigStore.handleSSIDStateChange(mLastNetworkId, false, "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(); |
| } |
| |
| /* Current design is to not set the config on a running hostapd but instead |
| * stop and start tethering when user changes config on a running access point |
| * |
| * TODO: Add control channel setup through hostapd that allows changing config |
| * on a running daemon |
| */ |
| private void startSoftApWithConfig(final WifiConfiguration config) { |
| // Start hostapd on a separate thread |
| new Thread(new Runnable() { |
| public void run() { |
| try { |
| mNwService.startAccessPoint(config, mInterfaceName); |
| } catch (Exception e) { |
| loge("Exception in softap start " + e); |
| try { |
| mNwService.stopAccessPoint(mInterfaceName); |
| mNwService.startAccessPoint(config, mInterfaceName); |
| } catch (Exception e1) { |
| loge("Exception in softap re-start " + e1); |
| sendMessage(CMD_START_AP_FAILURE); |
| return; |
| } |
| } |
| if (DBG) log("Soft AP start successful"); |
| sendMessage(CMD_START_AP_SUCCESS); |
| } |
| }).start(); |
| } |
| |
| |
| /* |
| * 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; |
| |
| } |
| |
| private class WifiNetworkFactory extends NetworkFactory { |
| public WifiNetworkFactory(Looper l, Context c, String TAG, NetworkCapabilities f) { |
| super(l, c, TAG, f); |
| } |
| protected void startNetwork() { |
| // TODO |
| // Enter association mode. |
| } |
| protected void stopNetwork() { |
| // TODO |
| // Stop associating. |
| } |
| } |
| /******************************************************** |
| * HSM states |
| *******************************************************/ |
| |
| class DefaultState extends State { |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch (message.what) { |
| case AsyncChannel.CMD_CHANNEL_HALF_CONNECTED: { |
| AsyncChannel ac = (AsyncChannel) message.obj; |
| if (ac == mWifiP2pChannel) { |
| if (message.arg1 == AsyncChannel.STATUS_SUCCESSFUL) { |
| mWifiP2pChannel.sendMessage(AsyncChannel.CMD_CHANNEL_FULL_CONNECTION); |
| } else { |
| 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 |
| // mWifiP2pChannel.connect(mContext, getHandler(), |
| // mWifiP2pManager.getMessenger()); |
| } |
| break; |
| } |
| case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: |
| mBluetoothConnectionActive = (message.arg1 != |
| BluetoothAdapter.STATE_DISCONNECTED); |
| break; |
| /* Synchronous call returns */ |
| case CMD_PING_SUPPLICANT: |
| case CMD_ENABLE_NETWORK: |
| case CMD_ADD_OR_UPDATE_NETWORK: |
| case CMD_REMOVE_NETWORK: |
| case CMD_SAVE_CONFIG: |
| replyToMessage(message, message.what, FAILURE); |
| break; |
| case CMD_GET_CAPABILITY_FREQ: |
| replyToMessage(message, message.what, null); |
| break; |
| case CMD_GET_CONFIGURED_NETWORKS: |
| replyToMessage(message, message.what, (List<WifiConfiguration>) null); |
| break; |
| case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: |
| replyToMessage(message, message.what, (List<WifiConfiguration>) null); |
| break; |
| case CMD_ENABLE_RSSI_POLL: |
| mEnableRssiPolling = (message.arg1 == 1); |
| break; |
| case CMD_ENABLE_BACKGROUND_SCAN: |
| mEnableBackgroundScan = (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_BOOT_COMPLETED: |
| String countryCode = mPersistedCountryCode; |
| if (TextUtils.isEmpty(countryCode) == false) { |
| Settings.Global.putString(mContext.getContentResolver(), |
| Settings.Global.WIFI_COUNTRY_CODE, |
| countryCode); |
| // It may be that the state transition that should send this info |
| // to the driver happened between mPersistedCountryCode getting set |
| // and now, so simply persisting it here would mean we have sent |
| // nothing to the driver. Send the cmd so it might be set now. |
| int sequenceNum = mCountryCodeSequence.incrementAndGet(); |
| sendMessageAtFrontOfQueue(CMD_SET_COUNTRY_CODE, |
| sequenceNum, 0, countryCode); |
| } |
| |
| checkAndSetConnectivityInstance(); |
| mNetworkFactory = new WifiNetworkFactory(getHandler().getLooper(), mContext, |
| NETWORKTYPE, mNetworkCapabilitiesFilter); |
| mNetworkFactory.setScoreFilter(60); |
| mCm.registerNetworkFactory(new Messenger(mNetworkFactory), NETWORKTYPE); |
| break; |
| case CMD_SET_BATCHED_SCAN: |
| recordBatchedScanSettings(message.arg1, message.arg2, (Bundle)message.obj); |
| break; |
| case CMD_POLL_BATCHED_SCAN: |
| handleBatchedScanPollRequest(); |
| break; |
| case CMD_START_NEXT_BATCHED_SCAN: |
| startNextBatchedScan(); |
| break; |
| /* Discard */ |
| case CMD_START_SCAN: |
| case CMD_START_SUPPLICANT: |
| case CMD_STOP_SUPPLICANT: |
| case CMD_STOP_SUPPLICANT_FAILED: |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case CMD_DELAYED_STOP_DRIVER: |
| case CMD_DRIVER_START_TIMED_OUT: |
| case CMD_START_AP: |
| case CMD_START_AP_SUCCESS: |
| case CMD_START_AP_FAILURE: |
| case CMD_STOP_AP: |
| case CMD_TETHER_STATE_CHANGE: |
| case CMD_TETHER_NOTIFICATION_TIMED_OUT: |
| 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.SCAN_RESULTS_EVENT: |
| case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: |
| case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: |
| case WifiMonitor.ASSOCIATION_REJECTION_EVENT: |
| case WifiMonitor.WPS_OVERLAP_EVENT: |
| case CMD_BLACKLIST_NETWORK: |
| case CMD_CLEAR_BLACKLIST: |
| case CMD_SET_OPERATIONAL_MODE: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_RSSI_POLL: |
| case CMD_ENABLE_ALL_NETWORKS: |
| case DhcpStateMachine.CMD_PRE_DHCP_ACTION: |
| case DhcpStateMachine.CMD_POST_DHCP_ACTION: |
| /* Handled by WifiApConfigStore */ |
| case CMD_SET_AP_CONFIG: |
| case CMD_SET_AP_CONFIG_COMPLETED: |
| case CMD_REQUEST_AP_CONFIG: |
| case CMD_RESPONSE_AP_CONFIG: |
| case WifiWatchdogStateMachine.POOR_LINK_DETECTED: |
| case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: |
| case CMD_NO_NETWORKS_PERIODIC_SCAN: |
| case CMD_DISABLE_P2P_RSP: |
| case WifiMonitor.SUP_REQUEST_IDENTITY: |
| case CMD_TEST_NETWORK_DISCONNECT: |
| case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: |
| case WifiMonitor.SUP_REQUEST_SIM_AUTH: |
| break; |
| case DhcpStateMachine.CMD_ON_QUIT: |
| mDhcpStateMachine = null; |
| break; |
| case CMD_SET_SUSPEND_OPT_ENABLED: |
| if (message.arg1 == 1) { |
| mSuspendWakeLock.release(); |
| setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, true); |
| } else { |
| setSuspendOptimizations(SUSPEND_DUE_TO_SCREEN, false); |
| } |
| break; |
| case WifiMonitor.DRIVER_HUNG_EVENT: |
| setSupplicantRunning(false); |
| setSupplicantRunning(true); |
| break; |
| case WifiManager.CONNECT_NETWORK: |
| replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, |
| WifiManager.BUSY); |
| break; |
| case WifiManager.FORGET_NETWORK: |
| replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, |
| WifiManager.BUSY); |
| break; |
| case WifiManager.SAVE_NETWORK: |
| replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, |
| WifiManager.BUSY); |
| break; |
| case WifiManager.START_WPS: |
| replyToMessage(message, WifiManager.WPS_FAILED, |
| WifiManager.BUSY); |
| break; |
| case WifiManager.CANCEL_WPS: |
| replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, |
| WifiManager.BUSY); |
| 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_ADAPTORS: |
| if (WifiNative.startHal()) { |
| List<WifiAdapter> adaptors = new ArrayList<WifiAdapter>(); |
| int featureSet = WifiNative.getSupportedFeatureSet(); |
| /* TODO: Get capabilities from adaptors themselves */ |
| for (int i = 0; i < WifiNative.getInterfaces(); i++) { |
| String name = WifiNative.getInterfaceName(i); |
| WifiAdapter adaptor; |
| if (name.startsWith("wlan")) { |
| adaptor = new WifiAdapter( |
| name, featureSet & ~WifiAdapter.WIFI_FEATURE_P2P); |
| } else if (name.startsWith("p2p")) { |
| adaptor = new WifiAdapter( |
| name, featureSet & WifiAdapter.WIFI_FEATURE_P2P); |
| } else { |
| logd("Ignoring adaptor with name" + name); |
| continue; |
| } |
| adaptors.add(adaptor); |
| } |
| replyToMessage(message, message.what, adaptors); |
| } else { |
| List<WifiAdapter> adaptors = new ArrayList<WifiAdapter>(); |
| replyToMessage(message, message.what, adaptors); |
| } |
| 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(CMD_UPDATE_LINKPROPERTIES); |
| break; |
| case CMD_IP_CONFIGURATION_SUCCESSFUL: |
| case CMD_IP_CONFIGURATION_LOST: |
| break; |
| case CMD_GET_CONNECTION_STATISTICS: |
| replyToMessage(message, message.what, mWifiConnectionStatistics); |
| break; |
| default: |
| loge("Error! unhandled message" + message); |
| break; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class InitialState extends State { |
| @Override |
| public void enter() { |
| mWifiNative.unloadDriver(); |
| |
| if (mWifiP2pChannel == null) { |
| mWifiP2pChannel = new AsyncChannel(); |
| mWifiP2pChannel.connect(mContext, getHandler(), |
| mWifiP2pServiceImpl.getP2pStateMachineMessenger()); |
| } |
| |
| if (mWifiApConfigChannel == null) { |
| mWifiApConfigChannel = new AsyncChannel(); |
| WifiApConfigStore wifiApConfigStore = WifiApConfigStore.makeWifiApConfigStore( |
| mContext, getHandler()); |
| wifiApConfigStore.loadApConfiguration(); |
| mWifiApConfigChannel.connectSync(mContext, getHandler(), |
| wifiApConfigStore.getMessenger()); |
| } |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| switch (message.what) { |
| case CMD_START_SUPPLICANT: |
| if (mWifiNative.loadDriver()) { |
| try { |
| mNwService.wifiFirmwareReload(mInterfaceName, "STA"); |
| } catch (Exception e) { |
| loge("Failed to reload STA firmware " + e); |
| // Continue |
| } |
| |
| try { |
| // A runtime crash can leave the interface up and |
| // IP addresses configured, and this affects |
| // connectivity when supplicant starts up. |
| // Ensure interface is down and we have no IP |
| // addresses before a supplicant start. |
| mNwService.setInterfaceDown(mInterfaceName); |
| mNwService.clearInterfaceAddresses(mInterfaceName); |
| |
| // Set privacy extensions |
| mNwService.setInterfaceIpv6PrivacyExtensions(mInterfaceName, true); |
| |
| // IPv6 is enabled only as long as access point is connected since: |
| // - IPv6 addresses and routes stick around after disconnection |
| // - kernel is unaware when connected and fails to start IPv6 negotiation |
| // - kernel can start autoconfiguration when 802.1x is not complete |
| mNwService.disableIpv6(mInterfaceName); |
| } catch (RemoteException re) { |
| loge("Unable to change interface settings: " + re); |
| } catch (IllegalStateException ie) { |
| loge("Unable to change interface settings: " + ie); |
| } |
| |
| /* Stop a running supplicant after a runtime restart |
| * Avoids issues with drivers that do not handle interface down |
| * on a running supplicant properly. |
| */ |
| mWifiMonitor.killSupplicant(mP2pSupported); |
| if(mWifiNative.startSupplicant(mP2pSupported)) { |
| setWifiState(WIFI_STATE_ENABLING); |
| if (DBG) log("Supplicant start successful"); |
| mWifiMonitor.startMonitoring(); |
| transitionTo(mSupplicantStartingState); |
| } else { |
| loge("Failed to start supplicant!"); |
| } |
| } else { |
| loge("Failed to load driver"); |
| } |
| break; |
| case CMD_START_AP: |
| if (mWifiNative.loadDriver()) { |
| setWifiApState(WIFI_AP_STATE_ENABLING); |
| transitionTo(mSoftApStartingState); |
| } else { |
| loge("Failed to load driver for softap"); |
| } |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class SupplicantStartingState extends State { |
| private void initializeWpsDetails() { |
| String detail; |
| detail = SystemProperties.get("ro.product.name", ""); |
| if (!mWifiNative.setDeviceName(detail)) { |
| loge("Failed to set device name " + detail); |
| } |
| detail = SystemProperties.get("ro.product.manufacturer", ""); |
| if (!mWifiNative.setManufacturer(detail)) { |
| loge("Failed to set manufacturer " + detail); |
| } |
| detail = SystemProperties.get("ro.product.model", ""); |
| if (!mWifiNative.setModelName(detail)) { |
| loge("Failed to set model name " + detail); |
| } |
| detail = SystemProperties.get("ro.product.model", ""); |
| if (!mWifiNative.setModelNumber(detail)) { |
| loge("Failed to set model number " + detail); |
| } |
| detail = SystemProperties.get("ro.serialno", ""); |
| if (!mWifiNative.setSerialNumber(detail)) { |
| loge("Failed to set serial number " + detail); |
| } |
| if (!mWifiNative.setConfigMethods("physical_display virtual_push_button")) { |
| loge("Failed to set WPS config methods"); |
| } |
| if (!mWifiNative.setDeviceType(mPrimaryDeviceType)) { |
| loge("Failed to set primary device type " + mPrimaryDeviceType); |
| } |
| } |
| |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case WifiMonitor.SUP_CONNECTION_EVENT: |
| if (DBG) log("Supplicant connection established"); |
| setWifiState(WIFI_STATE_ENABLED); |
| 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()); |
| mWifiNative.enableSaveConfig(); |
| mWifiConfigStore.loadAndEnableAllNetworks(); |
| initializeWpsDetails(); |
| |
| sendSupplicantConnectionChangedBroadcast(true); |
| transitionTo(mDriverStartedState); |
| break; |
| case WifiMonitor.SUP_DISCONNECTION_EVENT: |
| if (++mSupplicantRestartCount <= SUPPLICANT_RESTART_TRIES) { |
| loge("Failed to setup control channel, restart supplicant"); |
| mWifiMonitor.killSupplicant(mP2pSupported); |
| transitionTo(mInitialState); |
| sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); |
| } else { |
| loge("Failed " + mSupplicantRestartCount + |
| " times to start supplicant, unload driver"); |
| mSupplicantRestartCount = 0; |
| setWifiState(WIFI_STATE_UNKNOWN); |
| transitionTo(mInitialState); |
| } |
| break; |
| case CMD_START_SUPPLICANT: |
| case CMD_STOP_SUPPLICANT: |
| case CMD_START_AP: |
| case CMD_STOP_AP: |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case CMD_SET_OPERATIONAL_MODE: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_START_PACKET_FILTERING: |
| case CMD_STOP_PACKET_FILTERING: |
| deferMessage(message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class SupplicantStartedState extends State { |
| @Override |
| public void enter() { |
| /* Wifi is available as long as we have a connection to supplicant */ |
| mNetworkInfo.setIsAvailable(true); |
| if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); |
| |
| int defaultInterval = mContext.getResources().getInteger( |
| R.integer.config_wifi_supplicant_scan_interval); |
| |
| mSupplicantScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), |
| Settings.Global.WIFI_SUPPLICANT_SCAN_INTERVAL_MS, |
| defaultInterval); |
| |
| mWifiNative.setScanInterval((int)mSupplicantScanIntervalMs / 1000); |
| mWifiNative.setExternalSim(true); |
| |
| if (mFrameworkAutoJoin.get()) { |
| mWifiNative.enableAutoConnect(false); |
| } |
| |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_STOP_SUPPLICANT: /* Supplicant stopped by user */ |
| if (mP2pSupported) { |
| transitionTo(mWaitForP2pDisableState); |
| } else { |
| transitionTo(mSupplicantStoppingState); |
| } |
| break; |
| case WifiMonitor.SUP_DISCONNECTION_EVENT: /* Supplicant connection lost */ |
| loge("Connection lost, restart supplicant"); |
| handleSupplicantConnectionLoss(); |
| handleNetworkDisconnect(); |
| mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); |
| if (mP2pSupported) { |
| transitionTo(mWaitForP2pDisableState); |
| } else { |
| transitionTo(mInitialState); |
| } |
| sendMessageDelayed(CMD_START_SUPPLICANT, SUPPLICANT_RESTART_INTERVAL_MSECS); |
| break; |
| case WifiMonitor.SCAN_RESULTS_EVENT: |
| setScanResults(); |
| sendScanResultsAvailableBroadcast(); |
| mIsScanOngoing = false; |
| mIsFullScanOngoing = false; |
| if (mBufferedScanMsg.size() > 0) |
| sendMessage(mBufferedScanMsg.remove()); |
| break; |
| case CMD_PING_SUPPLICANT: |
| boolean ok = mWifiNative.ping(); |
| replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); |
| break; |
| case CMD_GET_CAPABILITY_FREQ: |
| String freqs = mWifiNative.getFreqCapability(); |
| replyToMessage(message, message.what, freqs); |
| break; |
| case CMD_START_AP: |
| /* Cannot start soft AP while in client mode */ |
| loge("Failed to start soft AP with a running supplicant"); |
| setWifiApState(WIFI_AP_STATE_FAILED); |
| break; |
| case CMD_SET_OPERATIONAL_MODE: |
| mOperationalMode = message.arg1; |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| |
| @Override |
| public void exit() { |
| mNetworkInfo.setIsAvailable(false); |
| if (mNetworkAgent != null) mNetworkAgent.sendNetworkInfo(mNetworkInfo); |
| } |
| } |
| |
| class SupplicantStoppingState extends State { |
| @Override |
| public void enter() { |
| /* Send any reset commands to supplicant before shutting it down */ |
| handleNetworkDisconnect(); |
| if (mDhcpStateMachine != null) { |
| mDhcpStateMachine.doQuit(); |
| } |
| |
| if (DBG) log("stopping supplicant"); |
| mWifiMonitor.stopSupplicant(); |
| |
| /* Send ourselves a delayed message to indicate failure after a wait time */ |
| sendMessageDelayed(obtainMessage(CMD_STOP_SUPPLICANT_FAILED, |
| ++mSupplicantStopFailureToken, 0), SUPPLICANT_RESTART_INTERVAL_MSECS); |
| setWifiState(WIFI_STATE_DISABLING); |
| mSupplicantStateTracker.sendMessage(CMD_RESET_SUPPLICANT_STATE); |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case WifiMonitor.SUP_CONNECTION_EVENT: |
| loge("Supplicant connection received while stopping"); |
| break; |
| case WifiMonitor.SUP_DISCONNECTION_EVENT: |
| if (DBG) log("Supplicant connection lost"); |
| handleSupplicantConnectionLoss(); |
| transitionTo(mInitialState); |
| break; |
| case CMD_STOP_SUPPLICANT_FAILED: |
| if (message.arg1 == mSupplicantStopFailureToken) { |
| loge("Timed out on a supplicant stop, kill and proceed"); |
| handleSupplicantConnectionLoss(); |
| transitionTo(mInitialState); |
| } |
| break; |
| case CMD_START_SUPPLICANT: |
| case CMD_STOP_SUPPLICANT: |
| case CMD_START_AP: |
| case CMD_STOP_AP: |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case CMD_SET_OPERATIONAL_MODE: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_START_PACKET_FILTERING: |
| case CMD_STOP_PACKET_FILTERING: |
| deferMessage(message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class DriverStartingState extends State { |
| private int mTries; |
| @Override |
| public void enter() { |
| mTries = 1; |
| /* Send ourselves a delayed message to start driver a second time */ |
| sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, |
| ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: |
| SupplicantState state = handleSupplicantStateChange(message); |
| /* If suplicant is exiting out of INTERFACE_DISABLED state into |
| * a state that indicates driver has started, it is ready to |
| * receive driver commands |
| */ |
| if (SupplicantState.isDriverActive(state)) { |
| transitionTo(mDriverStartedState); |
| } |
| break; |
| case CMD_DRIVER_START_TIMED_OUT: |
| if (message.arg1 == mDriverStartToken) { |
| if (mTries >= 2) { |
| loge("Failed to start driver after " + mTries); |
| transitionTo(mDriverStoppedState); |
| } else { |
| loge("Driver start failed, retrying"); |
| mWakeLock.acquire(); |
| mWifiNative.startDriver(); |
| mWakeLock.release(); |
| |
| ++mTries; |
| /* Send ourselves a delayed message to start driver again */ |
| sendMessageDelayed(obtainMessage(CMD_DRIVER_START_TIMED_OUT, |
| ++mDriverStartToken, 0), DRIVER_START_TIME_OUT_MSECS); |
| } |
| } |
| break; |
| /* Queue driver commands & connection events */ |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case WifiMonitor.NETWORK_CONNECTION_EVENT: |
| case WifiMonitor.NETWORK_DISCONNECTION_EVENT: |
| case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: |
| case WifiMonitor.ASSOCIATION_REJECTION_EVENT: |
| case WifiMonitor.WPS_OVERLAP_EVENT: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_START_PACKET_FILTERING: |
| case CMD_STOP_PACKET_FILTERING: |
| case CMD_START_SCAN: |
| case CMD_DISCONNECT: |
| case CMD_REASSOCIATE: |
| case CMD_RECONNECT: |
| deferMessage(message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class DriverStartedState extends State { |
| @Override |
| public void enter() { |
| |
| if (PDBG) { |
| loge("Driverstarted State enter"); |
| } |
| mIsRunning = true; |
| mInDelayedStop = false; |
| mDelayedStopCounter++; |
| 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(mBluetoothConnectionActive); |
| /* set country code */ |
| setCountryCode(); |
| /* set frequency band of operation */ |
| setFrequencyBand(); |
| /* initialize network state */ |
| setNetworkDetailedState(DetailedState.DISCONNECTED); |
| |
| /* Remove any filtering on Multicast v6 at start */ |
| mWifiNative.stopFilteringMulticastV6Packets(); |
| |
| /* Reset Multicast v4 filtering state */ |
| if (mFilteringMulticastV4Packets.get()) { |
| mWifiNative.startFilteringMulticastV4Packets(); |
| } else { |
| mWifiNative.stopFilteringMulticastV4Packets(); |
| } |
| |
| mDhcpActive = false; |
| |
| startBatchedScan(); |
| |
| if (mOperationalMode != CONNECT_MODE) { |
| mWifiNative.disconnect(); |
| mWifiConfigStore.disableAllNetworks(); |
| if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { |
| setWifiState(WIFI_STATE_DISABLED); |
| } |
| transitionTo(mScanModeState); |
| } else { |
| /* Driver stop may have disabled networks, enable right after start */ |
| mWifiConfigStore.enableAllNetworks(); |
| |
| if (DBG) loge("Attempting to reconnect to wifi network .."); |
| mWifiNative.reconnect(); |
| |
| // Status pulls in the current supplicant state and network connection state |
| // events over the monitor connection. This helps framework sync up with |
| // current supplicant state |
| mWifiNative.status(); |
| transitionTo(mDisconnectedState); |
| } |
| |
| // We may have missed screen update at boot |
| if (mScreenBroadcastReceived.get() == false) { |
| PowerManager powerManager = (PowerManager)mContext.getSystemService( |
| Context.POWER_SERVICE); |
| handleScreenStateChanged(powerManager.isScreenOn()); |
| } else { |
| // Set the right suspend mode settings |
| mWifiNative.setSuspendOptimizations(mSuspendOptNeedsDisabled == 0 |
| && mUserWantsSuspendOpt.get()); |
| } |
| mWifiNative.setPowerSave(true); |
| |
| if (mP2pSupported) { |
| if (mOperationalMode == CONNECT_MODE) { |
| mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_ENABLE_P2P); |
| } else { |
| // P2P statemachine starts in disabled state, and is not enabled until |
| // CMD_ENABLE_P2P is sent from here; so, nothing needs to be done to |
| // keep it disabled. |
| } |
| } |
| |
| 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_ENABLED); |
| mContext.sendStickyBroadcastAsUser(intent, UserHandle.ALL); |
| |
| if (PDBG) { |
| loge("Driverstarted State enter done"); |
| } |
| } |
| |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_START_SCAN: |
| handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); |
| break; |
| case CMD_SET_BATCHED_SCAN: |
| if (recordBatchedScanSettings(message.arg1, message.arg2, |
| (Bundle)message.obj)) { |
| if (mBatchedScanSettings != null) { |
| startBatchedScan(); |
| } else { |
| stopBatchedScan(); |
| } |
| } |
| break; |
| case CMD_SET_COUNTRY_CODE: |
| String country = (String) message.obj; |
| final boolean persist = (message.arg2 == 1); |
| final int sequence = message.arg1; |
| if (sequence != mCountryCodeSequence.get()) { |
| if (DBG) log("set country code ignored due to sequnce num"); |
| break; |
| } |
| if (DBG) log("set country code " + country); |
| if (persist) { |
| mPersistedCountryCode = country; |
| Settings.Global.putString(mContext.getContentResolver(), |
| Settings.Global.WIFI_COUNTRY_CODE, |
| country); |
| } |
| country = country.toUpperCase(Locale.ROOT); |
| if (mLastSetCountryCode == null |
| || country.equals(mLastSetCountryCode) == false) { |
| if (mWifiNative.setCountryCode(country)) { |
| mLastSetCountryCode = country; |
| } else { |
| loge("Failed to set country code " + country); |
| } |
| } |
| mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.SET_COUNTRY_CODE, country); |
| break; |
| case CMD_SET_FREQUENCY_BAND: |
| int band = message.arg1; |
| if (DBG) log("set frequency band " + band); |
| if (mWifiNative.setBand(band)) { |
| |
| if (PDBG) loge("did set frequency band " + band); |
| |
| mFrequencyBand.set(band); |
| // Flush old data - like scan results |
| mWifiNative.bssFlush(); |
| // Fetch the latest scan results when frequency band is set |
| if (mFrameworkAutoJoin.get()) |
| startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); |
| else |
| startScanNative(WifiNative.SCAN_WITH_CONNECTION_SETUP, null); |
| if (PDBG) loge("done set frequency band " + band); |
| |
| } else { |
| loge("Failed to set frequency band " + band); |
| } |
| break; |
| case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: |
| mBluetoothConnectionActive = (message.arg1 != |
| BluetoothAdapter.STATE_DISCONNECTED); |
| mWifiNative.setBluetoothCoexistenceScanMode(mBluetoothConnectionActive); |
| break; |
| case CMD_STOP_DRIVER: |
| int mode = message.arg1; |
| |
| /* Already doing a delayed stop */ |
| if (mInDelayedStop) { |
| if (DBG) log("Already in delayed stop"); |
| break; |
| } |
| /* disconnect right now, but leave the driver running for a bit */ |
| mWifiConfigStore.disableAllNetworks(); |
| |
| mInDelayedStop = true; |
| mDelayedStopCounter++; |
| if (DBG) log("Delayed stop message " + mDelayedStopCounter); |
| |
| /* send regular delayed shut down */ |
| Intent driverStopIntent = new Intent(ACTION_DELAYED_DRIVER_STOP, null); |
| driverStopIntent.putExtra(DELAYED_STOP_COUNTER, mDelayedStopCounter); |
| mDriverStopIntent = PendingIntent.getBroadcast(mContext, |
| DRIVER_STOP_REQUEST, driverStopIntent, |
| PendingIntent.FLAG_UPDATE_CURRENT); |
| |
| mAlarmManager.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis() |
| + mDriverStopDelayMs, mDriverStopIntent); |
| break; |
| case CMD_START_DRIVER: |
| if (mInDelayedStop) { |
| mInDelayedStop = false; |
| mDelayedStopCounter++; |
| mAlarmManager.cancel(mDriverStopIntent); |
| if (DBG) log("Delayed stop ignored due to start"); |
| if (mOperationalMode == CONNECT_MODE) { |
| mWifiConfigStore.enableAllNetworks(); |
| } |
| } |
| break; |
| case CMD_DELAYED_STOP_DRIVER: |
| if (DBG) log("delayed stop " + message.arg1 + " " + mDelayedStopCounter); |
| if (message.arg1 != mDelayedStopCounter) break; |
| if (getCurrentState() != mDisconnectedState) { |
| mWifiNative.disconnect(); |
| handleNetworkDisconnect(); |
| } |
| mWakeLock.acquire(); |
| mWifiNative.stopDriver(); |
| mWakeLock.release(); |
| if (mP2pSupported) { |
| transitionTo(mWaitForP2pDisableState); |
| } else { |
| transitionTo(mDriverStoppingState); |
| } |
| break; |
| case CMD_START_PACKET_FILTERING: |
| if (message.arg1 == MULTICAST_V6) { |
| mWifiNative.startFilteringMulticastV6Packets(); |
| } else if (message.arg1 == MULTICAST_V4) { |
| mWifiNative.startFilteringMulticastV4Packets(); |
| } else { |
| loge("Illegal arugments to CMD_START_PACKET_FILTERING"); |
| } |
| break; |
| case CMD_STOP_PACKET_FILTERING: |
| if (message.arg1 == MULTICAST_V6) { |
| mWifiNative.stopFilteringMulticastV6Packets(); |
| } else if (message.arg1 == MULTICAST_V4) { |
| mWifiNative.stopFilteringMulticastV4Packets(); |
| } else { |
| loge("Illegal arugments to CMD_STOP_PACKET_FILTERING"); |
| } |
| break; |
| case CMD_SET_SUSPEND_OPT_ENABLED: |
| if (message.arg1 == 1) { |
| setSuspendOptimizationsNative(SUSPEND_DUE_TO_SCREEN, true); |
| 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(remoteAddress, enable); |
| } |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| @Override |
| public void exit() { |
| mIsRunning = false; |
| updateBatteryWorkSource(null); |
| mScanResults = new ArrayList<ScanResult>(); |
| |
| stopBatchedScan(); |
| |
| 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); |
| noteScanEnd(); // wrap up any pending request. |
| mBufferedScanMsg.clear(); |
| |
| mLastSetCountryCode = null; |
| } |
| } |
| |
| class WaitForP2pDisableState extends State { |
| private State mTransitionToState; |
| @Override |
| public void enter() { |
| switch (getCurrentMessage().what) { |
| case WifiMonitor.SUP_DISCONNECTION_EVENT: |
| mTransitionToState = mInitialState; |
| break; |
| case CMD_DELAYED_STOP_DRIVER: |
| mTransitionToState = mDriverStoppingState; |
| break; |
| case CMD_STOP_SUPPLICANT: |
| mTransitionToState = mSupplicantStoppingState; |
| break; |
| default: |
| mTransitionToState = mDriverStoppingState; |
| break; |
| } |
| mWifiP2pChannel.sendMessage(WifiStateMachine.CMD_DISABLE_P2P_REQ); |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case WifiStateMachine.CMD_DISABLE_P2P_RSP: |
| transitionTo(mTransitionToState); |
| break; |
| /* Defer wifi start/shut and driver commands */ |
| case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: |
| case CMD_START_SUPPLICANT: |
| case CMD_STOP_SUPPLICANT: |
| case CMD_START_AP: |
| case CMD_STOP_AP: |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case CMD_SET_OPERATIONAL_MODE: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_START_PACKET_FILTERING: |
| case CMD_STOP_PACKET_FILTERING: |
| case CMD_START_SCAN: |
| case CMD_DISCONNECT: |
| case CMD_REASSOCIATE: |
| case CMD_RECONNECT: |
| deferMessage(message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class DriverStoppingState extends State { |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: |
| SupplicantState state = handleSupplicantStateChange(message); |
| if (state == SupplicantState.INTERFACE_DISABLED) { |
| transitionTo(mDriverStoppedState); |
| } |
| break; |
| /* Queue driver commands */ |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_START_PACKET_FILTERING: |
| case CMD_STOP_PACKET_FILTERING: |
| case CMD_START_SCAN: |
| case CMD_DISCONNECT: |
| case CMD_REASSOCIATE: |
| case CMD_RECONNECT: |
| deferMessage(message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class DriverStoppedState extends State { |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| switch (message.what) { |
| case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: |
| StateChangeResult stateChangeResult = (StateChangeResult) message.obj; |
| SupplicantState state = stateChangeResult.state; |
| // A WEXT bug means that we can be back to driver started state |
| // unexpectedly |
| if (SupplicantState.isDriverActive(state)) { |
| transitionTo(mDriverStartedState); |
| } |
| break; |
| case CMD_START_DRIVER: |
| mWakeLock.acquire(); |
| mWifiNative.startDriver(); |
| mWakeLock.release(); |
| transitionTo(mDriverStartingState); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class ScanModeState extends State { |
| private int mLastOperationMode; |
| @Override |
| public void enter() { |
| mLastOperationMode = mOperationalMode; |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_SET_OPERATIONAL_MODE: |
| if (message.arg1 == CONNECT_MODE) { |
| |
| if (mLastOperationMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { |
| setWifiState(WIFI_STATE_ENABLED); |
| // Load and re-enable networks when going back to enabled state |
| // This is essential for networks to show up after restore |
| mWifiConfigStore.loadAndEnableAllNetworks(); |
| mWifiP2pChannel.sendMessage(CMD_ENABLE_P2P); |
| } else { |
| mWifiConfigStore.enableAllNetworks(); |
| } |
| |
| mWifiNative.reconnect(); |
| |
| mOperationalMode = CONNECT_MODE; |
| transitionTo(mDisconnectedState); |
| } else { |
| // Nothing to do |
| return HANDLED; |
| } |
| break; |
| // Handle scan. All the connection related commands are |
| // handled only in ConnectModeState |
| case CMD_START_SCAN: |
| handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| |
| String smToString(Message message) { |
| return smToString(message.what); |
| } |
| |
| String smToString(int what) { |
| String s = "unknown"; |
| switch (what) { |
| case WifiMonitor.DRIVER_HUNG_EVENT: |
| s = "DRIVER_HUNG_EVENT"; |
| break; |
| 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 CMD_SET_FREQUENCY_BAND: |
| s = "CMD_SET_FREQUENCY_BAND"; |
| break; |
| case CMD_DELAYED_NETWORK_DISCONNECT: |
| s = "CMD_DELAYED_NETWORK_DISCONNECT"; |
| break; |
| case CMD_TEST_NETWORK_DISCONNECT: |
| s = "CMD_TEST_NETWORK_DISCONNECT"; |
| break; |
| case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: |
| s = "CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER"; |
| break; |
| case CMD_START_DRIVER: |
| s = "CMD_START_DRIVER"; |
| break; |
| case CMD_STOP_DRIVER: |
| s = "CMD_STOP_DRIVER"; |
| break; |
| case CMD_STOP_SUPPLICANT: |
| s = "CMD_STOP_SUPPLICANT"; |
| break; |
| case CMD_START_SUPPLICANT: |
| s = "CMD_START_SUPPLICANT"; |
| break; |
| case CMD_REQUEST_AP_CONFIG: |
| s = "CMD_REQUEST_AP_CONFIG"; |
| break; |
| case CMD_RESPONSE_AP_CONFIG: |
| s = "CMD_RESPONSE_AP_CONFIG"; |
| break; |
| case CMD_TETHER_STATE_CHANGE: |
| s = "CMD_TETHER_STATE_CHANGE"; |
| break; |
| case CMD_TETHER_NOTIFICATION_TIMED_OUT: |
| s = "CMD_TETHER_NOTIFICATION_TIMED_OUT"; |
| break; |
| case CMD_BLUETOOTH_ADAPTER_STATE_CHANGE: |
| s = "CMD_BLUETOOTH_ADAPTER_STATE_CHANGE"; |
| break; |
| case CMD_ADD_OR_UPDATE_NETWORK: |
| s = "CMD_ADD_OR_UPDATE_NETWORK"; |
| break; |
| case CMD_REMOVE_NETWORK: |
| s = "CMD_REMOVE_NETWORK"; |
| break; |
| case CMD_ENABLE_NETWORK: |
| s = "CMD_ENABLE_NETWORK"; |
| break; |
| case CMD_ENABLE_ALL_NETWORKS: |
| s = "CMD_ENABLE_ALL_NETWORKS"; |
| break; |
| case CMD_AUTO_CONNECT: |
| s = "CMD_AUTO_CONNECT"; |
| break; |
| case CMD_AUTO_ROAM: |
| s = "CMD_AUTO_ROAM"; |
| break; |
| case CMD_BOOT_COMPLETED: |
| s = "CMD_BOOT_COMPLETED"; |
| break; |
| case DhcpStateMachine.CMD_START_DHCP: |
| s = "CMD_START_DHCP"; |
| break; |
| case DhcpStateMachine.CMD_STOP_DHCP: |
| s = "CMD_STOP_DHCP"; |
| break; |
| case DhcpStateMachine.CMD_RENEW_DHCP: |
| s = "CMD_RENEW_DHCP"; |
| break; |
| case DhcpStateMachine.CMD_PRE_DHCP_ACTION: |
| s = "CMD_PRE_DHCP_ACTION"; |
| break; |
| case DhcpStateMachine.CMD_POST_DHCP_ACTION: |
| s = "CMD_POST_DHCP_ACTION"; |
| break; |
| case DhcpStateMachine.CMD_PRE_DHCP_ACTION_COMPLETE: |
| s = "CMD_PRE_DHCP_ACTION_COMPLETE"; |
| break; |
| case DhcpStateMachine.CMD_ON_QUIT: |
| s = "CMD_ON_QUIT"; |
| break; |
| case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: |
| s = "WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST"; |
| break; |
| case WifiManager.DISABLE_NETWORK: |
| s = "WifiManager.DISABLE_NETWORK"; |
| break; |
| case CMD_BLACKLIST_NETWORK: |
| s = "CMD_BLACKLIST_NETWORK"; |
| break; |
| case CMD_CLEAR_BLACKLIST: |
| s = "CMD_CLEAR_BLACKLIST"; |
| break; |
| case CMD_SAVE_CONFIG: |
| s = "CMD_SAVE_CONFIG"; |
| break; |
| case CMD_GET_CONFIGURED_NETWORKS: |
| s = "CMD_GET_CONFIGURED_NETWORKS"; |
| break; |
| case CMD_GET_ADAPTORS: |
| s = "CMD_GET_ADAPTORS"; |
| case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: |
| s = "CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS"; |
| break; |
| case CMD_DISCONNECT: |
| s = "CMD_DISCONNECT"; |
| break; |
| case CMD_RECONNECT: |
| s = "CMD_RECONNECT"; |
| break; |
| case CMD_REASSOCIATE: |
| s = "CMD_REASSOCIATE"; |
| break; |
| case CMD_GET_CONNECTION_STATISTICS: |
| s = "CMD_GET_CONNECTION_STATISTICS"; |
| break; |
| case CMD_SET_HIGH_PERF_MODE: |
| s = "CMD_SET_HIGH_PERF_MODE"; |
| break; |
| case CMD_SET_COUNTRY_CODE: |
| s = "CMD_SET_COUNTRY_CODE"; |
| break; |
| case CMD_ENABLE_RSSI_POLL: |
| s = "CMD_ENABLE_RSSI_POLL"; |
| break; |
| case CMD_RSSI_POLL: |
| s = "CMD_RSSI_POLL"; |
| break; |
| case CMD_START_PACKET_FILTERING: |
| s = "CMD_START_PACKET_FILTERING"; |
| break; |
| case CMD_STOP_PACKET_FILTERING: |
| s = "CMD_STOP_PACKET_FILTERING"; |
| break; |
| case CMD_SET_SUSPEND_OPT_ENABLED: |
| s = "CMD_SET_SUSPEND_OPT_ENABLED"; |
| break; |
| case CMD_NO_NETWORKS_PERIODIC_SCAN: |
| s = "CMD_NO_NETWORKS_PERIODIC_SCAN"; |
| break; |
| case CMD_SET_BATCHED_SCAN: |
| s = "CMD_SET_BATCHED_SCAN"; |
| break; |
| case CMD_START_NEXT_BATCHED_SCAN: |
| s = "CMD_START_NEXT_BATCHED_SCAN"; |
| break; |
| case CMD_POLL_BATCHED_SCAN: |
| s = "CMD_POLL_BATCHED_SCAN"; |
| break; |
| case CMD_UPDATE_LINKPROPERTIES: |
| s = "CMD_UPDATE_LINKPROPERTIES"; |
| break; |
| case CMD_RELOAD_TLS_AND_RECONNECT: |
| s = "CMD_RELOAD_TLS_AND_RECONNECT"; |
| 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.SCAN_RESULTS_EVENT: |
| s = "SCAN_RESULTS_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.SSID_TEMP_DISABLED: |
| s = "SSID_TEMP_DISABLED"; |
| break; |
| case WifiMonitor.SSID_REENABLED: |
| s = "SSID_REENABLED"; |
| break; |
| case WifiMonitor.WPS_SUCCESS_EVENT: |
| s = "WPS_SUCCESS_EVENT"; |
| break; |
| case WifiMonitor.WPS_FAIL_EVENT: |
| s = "WPS_FAIL_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 CMD_SET_OPERATIONAL_MODE: |
| s = "CMD_SET_OPERATIONAL_MODE"; |
| break; |
| case CMD_START_SCAN: |
| s = "CMD_START_SCAN"; |
| break; |
| case CMD_ENABLE_BACKGROUND_SCAN: |
| s = "CMD_ENABLE_BACKGROUND_SCAN"; |
| break; |
| case CMD_DISABLE_P2P_RSP: |
| s = "CMD_DISABLE_P2P_RSP"; |
| break; |
| case CMD_DISABLE_P2P_REQ: |
| s = "CMD_DISABLE_P2P_REQ"; |
| break; |
| case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: |
| s = "GOOD_LINK_DETECTED"; |
| break; |
| case WifiWatchdogStateMachine.POOR_LINK_DETECTED: |
| s = "POOR_LINK_DETECTED"; |
| 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 WifiP2pServiceImpl.SET_COUNTRY_CODE: |
| s = "P2P.SET_COUNTRY_CODE"; |
| break; |
| case WifiManager.CANCEL_WPS: |
| s = "CANCEL_WPS"; |
| break; |
| case WifiManager.CANCEL_WPS_FAILED: |
| s = "CANCEL_WPS_FAILED"; |
| break; |
| case WifiManager.CANCEL_WPS_SUCCEDED: |
| s = "CANCEL_WPS_SUCCEDED"; |
| break; |
| case WifiManager.START_WPS: |
| s = "START_WPS"; |
| break; |
| case WifiManager.START_WPS_SUCCEEDED: |
| s = "START_WPS_SUCCEEDED"; |
| break; |
| case WifiManager.WPS_FAILED: |
| s = "WPS_FAILED"; |
| break; |
| case WifiManager.WPS_COMPLETED: |
| s = "WPS_COMPLETED"; |
| break; |
| case WifiManager.RSSI_PKTCNT_FETCH: |
| s = "RSSI_PKTCNT_FETCH"; |
| break; |
| case CMD_IP_CONFIGURATION_LOST: |
| s = "CMD_IP_CONFIGURATION_LOST"; |
| break; |
| case CMD_IP_CONFIGURATION_SUCCESSFUL: |
| s = "CMD_IP_CONFIGURATION_SUCCESSFUL"; |
| break; |
| case CMD_STATIC_IP_SUCCESS: |
| s = "CMD_STATIC_IP_SUCCESSFUL"; |
| break; |
| case CMD_STATIC_IP_FAILURE: |
| s = "CMD_STATIC_IP_FAILURE"; |
| break; |
| case DhcpStateMachine.DHCP_SUCCESS: |
| s = "DHCP_SUCCESS"; |
| break; |
| case DhcpStateMachine.DHCP_FAILURE: |
| s = "DHCP_FAILURE"; |
| break; |
| default: |
| s = "what:" + Integer.toString(what); |
| break; |
| } |
| return s; |
| } |
| |
| void registerConnected() { |
| if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { |
| long now_ms = System.currentTimeMillis(); |
| // We are switching away from this configuration, |
| // hence record the time we were connected last |
| WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); |
| if (config != null) { |
| config.lastConnected = System.currentTimeMillis(); |
| } |
| } |
| } |
| |
| void registerDisconnected() { |
| if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { |
| long now_ms = System.currentTimeMillis(); |
| // We are switching away from this configuration, |
| // hence record the time we were connected last |
| WifiConfiguration config = mWifiConfigStore.getWifiConfiguration(mLastNetworkId); |
| if (config != null) { |
| config.lastDisconnected = System.currentTimeMillis(); |
| } |
| } |
| } |
| |
| WifiConfiguration getCurrentWifiConfiguration() { |
| if (mLastNetworkId == WifiConfiguration.INVALID_NETWORK_ID) { |
| return null; |
| } |
| return mWifiConfigStore.getWifiConfiguration(mLastNetworkId); |
| } |
| |
| String getCurrentBSSID() { |
| if (linkDebouncing) { |
| return null; |
| } |
| return mLastBssid; |
| } |
| |
| class ConnectModeState extends State { |
| @Override |
| public boolean processMessage(Message message) { |
| WifiConfiguration config; |
| int netId; |
| boolean ok; |
| String bssid; |
| String ssid; |
| NetworkUpdateResult result; |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case WifiMonitor.ASSOCIATION_REJECTION_EVENT: |
| didBlackListBSSID = false; |
| bssid = (String)message.obj; |
| 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 = mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, bssid, false); |
| } |
| mSupplicantStateTracker.sendMessage(WifiMonitor.ASSOCIATION_REJECTION_EVENT); |
| break; |
| case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: |
| mSupplicantStateTracker.sendMessage(WifiMonitor.AUTHENTICATION_FAILURE_EVENT); |
| break; |
| case WifiMonitor.SSID_TEMP_DISABLED: |
| case WifiMonitor.SSID_REENABLED: |
| String substr = (String)message.obj; |
| String en = message.what == WifiMonitor.SSID_TEMP_DISABLED ? |
| "temp-disabled" : "re-enabled"; |
| loge("ConnectModeState SSID state=" + en + " nid=" |
| + Integer.toString(message.arg1) + " [" + substr + "]"); |
| mWifiConfigStore.handleSSIDStateChange(message.arg1, message.what == |
| WifiMonitor.SSID_REENABLED, substr); |
| 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)) { |
| if (mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { |
| handleNetworkDisconnect(); |
| } |
| log("Detected an interface down, restart driver"); |
| transitionTo(mDriverStoppedState); |
| sendMessage(CMD_START_DRIVER); |
| 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 (!linkDebouncing && state == SupplicantState.DISCONNECTED && |
| mNetworkInfo.getState() != NetworkInfo.State.DISCONNECTED) { |
| if (DBG) log("Missed CTRL-EVENT-DISCONNECTED, disconnect"); |
| handleNetworkDisconnect(); |
| transitionTo(mDisconnectedState); |
| } |
| break; |
| case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: |
| if (message.arg1 == 1) { |
| mWifiNative.disconnect(); |
| mTemporarilyDisconnectWifi = true; |
| } else { |
| mWifiNative.reconnect(); |
| mTemporarilyDisconnectWifi = false; |
| } |
| break; |
| case CMD_ADD_OR_UPDATE_NETWORK: |
| config = (WifiConfiguration) message.obj; |
| replyToMessage(message, CMD_ADD_OR_UPDATE_NETWORK, |
| mWifiConfigStore.addOrUpdateNetwork(config)); |
| break; |
| case CMD_REMOVE_NETWORK: |
| ok = mWifiConfigStore.removeNetwork(message.arg1); |
| replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); |
| break; |
| case CMD_ENABLE_NETWORK: |
| boolean others = message.arg2 == 1; |
| // Tell autojoin the user did try to select to that network |
| // However, do NOT persist the choice by bumping the priority of the network |
| if (others) { |
| mWifiAutoJoinController. |
| updateConfigurationHistory(message.arg1, true, false); |
| // Set the last selected configuration so as to allow the system to |
| // stick the last user choice without persisting the choice |
| mWifiConfigStore.setLastSelectedConfiguration(message.arg1); |
| |
| // Remember time of last connection attempt |
| lastConnectAttempt = System.currentTimeMillis(); |
| |
| mWifiConnectionStatistics.numWifiManagerJoinAttempt++; |
| } |
| // Cancel auto roam requests |
| autoRoamSetBSSID(message.arg1, "any"); |
| |
| ok = mWifiConfigStore.enableNetwork(message.arg1, message.arg2 == 1); |
| replyToMessage(message, message.what, ok ? SUCCESS : FAILURE); |
| break; |
| case CMD_ENABLE_ALL_NETWORKS: |
| long time = android.os.SystemClock.elapsedRealtime(); |
| if (time - mLastEnableAllNetworksTime > MIN_INTERVAL_ENABLE_ALL_NETWORKS_MS) { |
| mWifiConfigStore.enableAllNetworks(); |
| mLastEnableAllNetworksTime = time; |
| } |
| break; |
| case WifiManager.DISABLE_NETWORK: |
| if (mWifiConfigStore.disableNetwork(message.arg1, |
| WifiConfiguration.DISABLED_UNKNOWN_REASON) == true) { |
| replyToMessage(message, WifiManager.DISABLE_NETWORK_SUCCEEDED); |
| } else { |
| replyToMessage(message, WifiManager.DISABLE_NETWORK_FAILED, |
| WifiManager.ERROR); |
| } |
| break; |
| case CMD_BLACKLIST_NETWORK: |
| mWifiNative.addToBlacklist((String)message.obj); |
| break; |
| case CMD_CLEAR_BLACKLIST: |
| mWifiNative.clearBlacklist(); |
| break; |
| case CMD_SAVE_CONFIG: |
| ok = mWifiConfigStore.saveConfig(); |
| |
| if (DBG) loge("wifistatemachine did save config " + ok); |
| replyToMessage(message, CMD_SAVE_CONFIG, ok ? SUCCESS : FAILURE); |
| |
| // Inform the backup manager about a data change |
| IBackupManager ibm = IBackupManager.Stub.asInterface( |
| ServiceManager.getService(Context.BACKUP_SERVICE)); |
| if (ibm != null) { |
| try { |
| ibm.dataChanged("com.android.providers.settings"); |
| } catch (Exception e) { |
| // Try again later |
| } |
| } |
| break; |
| case CMD_GET_CONFIGURED_NETWORKS: |
| replyToMessage(message, message.what, |
| mWifiConfigStore.getConfiguredNetworks()); |
| break; |
| case WifiMonitor.SUP_REQUEST_IDENTITY: |
| // 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 + "\"")) { |
| mWifiConfigStore.handleSSIDStateChange(targetWificonfiguration.networkId, |
| false, "AUTH_FAILED no identity"); |
| } |
| // Disconnect now, as we don't have any way to fullfill the supplicant request. |
| mWifiConfigStore.setLastSelectedConfiguration |
| (WifiConfiguration.INVALID_NETWORK_ID); |
| mWifiNative.disconnect(); |
| break; |
| case WifiMonitor.SUP_REQUEST_SIM_AUTH: |
| logd("Received SUP_REQUEST_SIM_AUTH"); |
| SimAuthRequestData requestData = (SimAuthRequestData) message.obj; |
| if (requestData != null) { |
| handleSimAuthRequest(requestData); |
| } else { |
| loge("Invalid sim auth request"); |
| } |
| break; |
| case CMD_GET_PRIVILEGED_CONFIGURED_NETWORKS: |
| replyToMessage(message, message.what, |
| mWifiConfigStore.getPrivilegedConfiguredNetworks()); |
| break; |
| /* Do a redundant disconnect without transition */ |
| case CMD_DISCONNECT: |
| mWifiConfigStore.setLastSelectedConfiguration |
| (WifiConfiguration.INVALID_NETWORK_ID); |
| mWifiNative.disconnect(); |
| break; |
| case CMD_RECONNECT: |
| lastConnectAttempt = System.currentTimeMillis(); |
| mWifiNative.reconnect(); |
| break; |
| case CMD_REASSOCIATE: |
| lastConnectAttempt = System.currentTimeMillis(); |
| mWifiNative.reassociate(); |
| break; |
| case CMD_RELOAD_TLS_AND_RECONNECT: |
| if (mWifiConfigStore.needsUnlockedKeyStore()) { |
| logd("Reconnecting to give a chance to un-connected TLS networks"); |
| mWifiNative.disconnect(); |
| lastConnectAttempt = System.currentTimeMillis(); |
| mWifiNative.reconnect(); |
| } |
| break; |
| case CMD_AUTO_ROAM: |
| return HANDLED; |
| case CMD_AUTO_CONNECT: |
| /* Work Around: wpa_supplicant can get in a bad state where it returns a non |
| * associated status to the STATUS command but somehow-someplace still thinks |
| * it is associated and thus will ignore select/reconnect command with |
| * following message: |
| * "Already associated with the selected network - do nothing" |
| * |
| * Hence, sends a disconnect to supplicant first. |
| */ |
| mWifiNative.disconnect(); |
| |
| /* connect command coming from auto-join */ |
| config = (WifiConfiguration) message.obj; |
| netId = message.arg1; |
| int roam = message.arg2; |
| loge("CMD_AUTO_CONNECT sup state " |
| + mSupplicantStateTracker.getSupplicantStateName() |
| + " my state " + getCurrentState().getName() |
| + " nid=" + Integer.toString(netId) |
| + " roam=" + Integer.toString(roam)); |
| if (config == null) { |
| loge("AUTO_CONNECT and no config, bail out..."); |
| break; |
| } |
| |
| /* Make sure we cancel any previous roam request */ |
| autoRoamSetBSSID(config, "any"); |
| |
| /* Save the network config */ |
| loge("CMD_AUTO_CONNECT will save config -> " + config.SSID |
| + " nid=" + Integer.toString(netId)); |
| result = mWifiConfigStore.saveNetwork(config); |
| netId = result.getNetworkId(); |
| loge("CMD_AUTO_CONNECT did save config -> " |
| + " nid=" + Integer.toString(netId)); |
| |
| if (mWifiConfigStore.selectNetwork(netId) && |
| mWifiNative.reconnect()) { |
| lastConnectAttempt = System.currentTimeMillis(); |
| targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); |
| // We selected a better config, |
| // maybe because we could not see the last user |
| // selection, then forget it. We will remember the selection |
| // only if it was persisted. |
| mWifiConfigStore. |
| setLastSelectedConfiguration(WifiConfiguration.INVALID_NETWORK_ID); |
| |
| mAutoRoaming = roam; |
| if (isRoaming() || linkDebouncing) { |
| transitionTo(mRoamingState); |
| } else { |
| transitionTo(mDisconnectingState); |
| } |
| } else { |
| loge("Failed to connect config: " + config + " netId: " + netId); |
| replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, |
| WifiManager.ERROR); |
| break; |
| } |
| 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; |
| mWifiConnectionStatistics.numWifiManagerJoinAttempt++; |
| |
| if (config == null) { |
| loge("CONNECT_NETWORK id=" + Integer.toString(netId) + " " |
| + mSupplicantStateTracker.getSupplicantStateName() + " my state " |
| + getCurrentState().getName()); |
| } else { |
| loge("CONNECT_NETWORK id=" + Integer.toString(netId) |
| + " config=" + config.SSID |
| + " cnid=" + config.networkId |
| + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() |
| + " my state " + getCurrentState().getName()); |
| } |
| |
| autoRoamSetBSSID(netId, "any"); |
| mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; |
| |
| /* Save the network config */ |
| if (config != null) { |
| result = mWifiConfigStore.saveNetwork(config); |
| netId = result.getNetworkId(); |
| } |
| if (mFrameworkAutoJoin.get()) { |
| /* Tell autojoin the user did try to connect to that network */ |
| mWifiAutoJoinController.updateConfigurationHistory(netId, true, true); |
| } |
| mWifiConfigStore.setLastSelectedConfiguration(netId); |
| |
| if (mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID |
| && mLastNetworkId != netId) { |
| /** Supplicant will ignore the reconnect if we are currently associated, |
| * hence trigger a disconnect |
| */ |
| mWifiNative.disconnect(); |
| } |
| |
| if (mWifiConfigStore.selectNetwork(netId) && |
| mWifiNative.reconnect()) { |
| lastConnectAttempt = System.currentTimeMillis(); |
| targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); |
| |
| /* The state tracker handles enabling networks upon completion/failure */ |
| mSupplicantStateTracker.sendMessage(WifiManager.CONNECT_NETWORK); |
| replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); |
| /* Expect a disconnection from the old connection */ |
| transitionTo(mDisconnectingState); |
| } else { |
| loge("Failed to connect config: " + config + " netId: " + netId); |
| replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, |
| WifiManager.ERROR); |
| break; |
| } |
| break; |
| case WifiManager.SAVE_NETWORK: |
| config = (WifiConfiguration) message.obj; |
| int nid = config.networkId; |
| if (config == null) { |
| loge("SAVE_NETWORK id=" + Integer.toString(nid) |
| + " " + mSupplicantStateTracker.getSupplicantStateName() |
| + " my state " + getCurrentState().getName()); |
| } else { |
| loge("SAVE_NETWORK id=" + Integer.toString(nid) |
| + " config=" + config.SSID |
| + " cnid=" + config.networkId |
| + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() |
| + " my state " + getCurrentState().getName()); |
| } |
| mWifiConnectionStatistics.numWifiManagerJoinAttempt++; |
| |
| result = mWifiConfigStore.saveNetwork(config); |
| if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { |
| replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); |
| if (VDBG) { |
| loge("Success save network nid=" |
| + Integer.toString(result.getNetworkId()) |
| + " autojoin " + mFrameworkAutoJoin.get()); |
| } |
| if (mFrameworkAutoJoin.get()) { |
| /* Tell autojoin the user did try to modify and save that network, |
| * and interpret the SAVE_NETWORK as a request to connect */ |
| mWifiAutoJoinController.updateConfigurationHistory(result.getNetworkId() |
| ,true, true); |
| mWifiAutoJoinController.attemptAutoJoin(); |
| } |
| } else { |
| loge("Failed to save network"); |
| replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, |
| WifiManager.ERROR); |
| } |
| break; |
| case WifiManager.FORGET_NETWORK: |
| if (mWifiConfigStore.forgetNetwork(message.arg1)) { |
| replyToMessage(message, WifiManager.FORGET_NETWORK_SUCCEEDED); |
| } else { |
| loge("Failed to forget network"); |
| replyToMessage(message, WifiManager.FORGET_NETWORK_FAILED, |
| WifiManager.ERROR); |
| } |
| break; |
| case WifiManager.START_WPS: |
| WpsInfo wpsInfo = (WpsInfo) message.obj; |
| WpsResult wpsResult; |
| switch (wpsInfo.setup) { |
| case WpsInfo.PBC: |
| wpsResult = mWifiConfigStore.startWpsPbc(wpsInfo); |
| break; |
| case WpsInfo.KEYPAD: |
| wpsResult = mWifiConfigStore.startWpsWithPinFromAccessPoint(wpsInfo); |
| break; |
| case WpsInfo.DISPLAY: |
| wpsResult = mWifiConfigStore.startWpsWithPinFromDevice(wpsInfo); |
| break; |
| default: |
| wpsResult = new WpsResult(Status.FAILURE); |
| loge("Invalid setup for WPS"); |
| break; |
| } |
| mWifiConfigStore.setLastSelectedConfiguration |
| (WifiConfiguration.INVALID_NETWORK_ID); |
| if (wpsResult.status == Status.SUCCESS) { |
| replyToMessage(message, WifiManager.START_WPS_SUCCEEDED, wpsResult); |
| transitionTo(mWpsRunningState); |
| } else { |
| loge("Failed to start WPS with config " + wpsInfo.toString()); |
| replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.ERROR); |
| } |
| break; |
| case WifiMonitor.NETWORK_CONNECTION_EVENT: |
| if (DBG) log("Network connection established"); |
| mLastNetworkId = message.arg1; |
| mLastBssid = (String) message.obj; |
| |
| mWifiInfo.setBSSID(mLastBssid); |
| mWifiInfo.setNetworkId(mLastNetworkId); |
| // Send event to CM & network change broadcast |
| setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); |
| sendNetworkStateChangeBroadcast(mLastBssid); |
| transitionTo(mObtainingIpState); |
| break; |
| case WifiMonitor.NETWORK_DISCONNECTION_EVENT: |
| if (DBG) log("ConnectModeState: Network connection lost "); |
| handleNetworkDisconnect(); |
| transitionTo(mDisconnectedState); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| private class WifiNetworkAgent extends NetworkAgent { |
| public WifiNetworkAgent(Looper l, Context c, String TAG, NetworkInfo ni, |
| NetworkCapabilities nc, LinkProperties lp, int score) { |
| super(l, c, TAG, ni, nc, lp, score); |
| } |
| protected void unwanted() { |
| // Ignore if we're not the current networkAgent. |
| if (this != mNetworkAgent) return; |
| // TODO - don't want this network. What to do? |
| if (DBG) log("WifiNetworkAgent -> Wifi unwanted score " |
| + Integer.toString(mWifiInfo.score)); |
| unwantedNetwork(); |
| } |
| } |
| |
| void unwantedNetwork() { |
| sendMessage(CMD_UNWANTED_NETWORK); |
| } |
| |
| boolean startScanForConfiguration(WifiConfiguration config, boolean restrictChannelList) { |
| HashSet<Integer> channels |
| = mWifiConfigStore.makeChannelList(config, |
| ONE_HOUR_MILLI, restrictChannelList); |
| if (channels != null && channels.size() != 0) { |
| StringBuilder freqs = new StringBuilder(); |
| boolean first = true; |
| for (Integer channel : channels) { |
| if (!first) |
| freqs.append(","); |
| freqs.append(channel.toString()); |
| first = false; |
| } |
| if (DBG) { |
| loge("WifiStateMachine starting scan with " + freqs); |
| } |
| // Call wifi native to start the scan |
| if (startScanNative( |
| WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, |
| freqs.toString())) { |
| // Only count battery consumption if scan request is accepted |
| noteScanStart(SCAN_ALARM_SOURCE, null); |
| } |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| class L2ConnectedState extends State { |
| @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); |
| } |
| |
| @Override |
| public void exit() { |
| // 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 (mLastBssid != null || mLastNetworkId != WifiConfiguration.INVALID_NETWORK_ID) { |
| handleNetworkDisconnect(); |
| } |
| } |
| |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch (message.what) { |
| case DhcpStateMachine.CMD_PRE_DHCP_ACTION: |
| handlePreDhcpSetup(); |
| break; |
| case DhcpStateMachine.CMD_POST_DHCP_ACTION: |
| handlePostDhcpSetup(); |
| if (message.arg1 == DhcpStateMachine.DHCP_SUCCESS) { |
| if (DBG) log("WifiStateMachine DHCP successful"); |
| handleIPv4Success((DhcpResults) message.obj, DhcpStateMachine.DHCP_SUCCESS); |
| // We advance to mVerifyingLinkState because handleIPv4Success will call |
| // updateLinkProperties, which then sends CMD_IP_CONFIGURATION_SUCCESSFUL. |
| } else if (message.arg1 == DhcpStateMachine.DHCP_FAILURE) { |
| if (DBG) { |
| int count = -1; |
| WifiConfiguration config = getCurrentWifiConfiguration(); |
| if (config != null) { |
| count = config.numConnectionFailures; |
| } |
| log("WifiStateMachine DHCP failure count=" + count); |
| } |
| handleIPv4Failure(DhcpStateMachine.DHCP_FAILURE); |
| // As above, we transition to mDisconnectingState via updateLinkProperties. |
| } |
| break; |
| case CMD_IP_CONFIGURATION_SUCCESSFUL: |
| handleSuccessfulIpConfiguration(); |
| sendConnectedState(); |
| transitionTo(mConnectedState); |
| break; |
| case CMD_IP_CONFIGURATION_LOST: |
| handleIpConfigurationLost(); |
| transitionTo(mDisconnectingState); |
| break; |
| case CMD_DISCONNECT: |
| mWifiNative.disconnect(); |
| transitionTo(mDisconnectingState); |
| break; |
| case WifiP2pServiceImpl.DISCONNECT_WIFI_REQUEST: |
| if (message.arg1 == 1) { |
| mWifiNative.disconnect(); |
| mTemporarilyDisconnectWifi = true; |
| transitionTo(mDisconnectingState); |
| } |
| break; |
| case CMD_SET_OPERATIONAL_MODE: |
| if (message.arg1 != CONNECT_MODE) { |
| sendMessage(CMD_DISCONNECT); |
| deferMessage(message); |
| } |
| break; |
| case CMD_SET_COUNTRY_CODE: |
| deferMessage(message); |
| break; |
| case CMD_START_SCAN: |
| if (DBG) { |
| loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 |
| + " txSuccessRate="+String.format( "%.2f", mWifiInfo.txSuccessRate) |
| + " rxSuccessRate="+String.format( "%.2f", mWifiInfo.rxSuccessRate) |
| + " BSSID=" + mTargetRoamBSSID |
| + " RSSI=" + mWifiInfo.getRssi()); |
| } |
| if (message.arg1 == SCAN_ALARM_SOURCE) { |
| boolean tryFullBandScan = false; |
| boolean restrictChannelList = false; |
| long now_ms = System.currentTimeMillis(); |
| if (mWifiInfo != null) { |
| if ((now_ms - lastFullBandConnectedTimeMilli) |
| > fullBandConnectedTimeIntervalMilli) { |
| if (DBG) { |
| loge("WifiStateMachine CMD_START_SCAN try full band scan age=" |
| + Long.toString(now_ms - lastFullBandConnectedTimeMilli) |
| + " interval=" + fullBandConnectedTimeIntervalMilli); |
| } |
| tryFullBandScan = true; |
| } |
| |
| if (mWifiInfo.txSuccessRate > 5 || mWifiInfo.rxSuccessRate > 30) { |
| // Too much traffic at the interface, hence no full band scan |
| if (DBG) { |
| loge("WifiStateMachine CMD_START_SCAN " + |
| "prevent full band scan due to pkt rate"); |
| } |
| tryFullBandScan = false; |
| } |
| |
| if (mWifiInfo.txSuccessRate > 50 || mWifiInfo.rxSuccessRate > 100) { |
| // Don't scan if lots of packets are being sent |
| restrictChannelList = true; |
| if (mAllowScansWithTraffic == 0) { |
| if (DBG) { |
| loge("WifiStateMachine CMD_START_SCAN source " + message.arg1 |
| + " ...and ignore scans" |
| + " tx=" + String.format("%.2f", mWifiInfo.txSuccessRate) |
| + " rx=" + String.format("%.2f", mWifiInfo.rxSuccessRate)); |
| } |
| return HANDLED; |
| } |
| } |
| } |
| |
| WifiConfiguration currentConfiguration = getCurrentWifiConfiguration(); |
| if (currentConfiguration != null) { |
| if (tryFullBandScan) { |
| lastFullBandConnectedTimeMilli = now_ms; |
| if (fullBandConnectedTimeIntervalMilli < 20 * 1000) { |
| // Paranoia, make sure interval is not less than 20 seconds |
| fullBandConnectedTimeIntervalMilli = 20 * 1000; |
| } |
| if (fullBandConnectedTimeIntervalMilli |
| < maxFullBandConnectedTimeIntervalMilli) { |
| // Increase the interval |
| fullBandConnectedTimeIntervalMilli |
| = fullBandConnectedTimeIntervalMilli * 3 / 2; |
| } |
| handleScanRequest( |
| WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); |
| } else { |
| if (!startScanForConfiguration(currentConfiguration, restrictChannelList)) { |
| if (DBG) { |
| loge("WifiStateMachine starting scan, did not find channels"); |
| handleScanRequest( |
| WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); |
| } |
| } |
| } |
| } |
| } else { |
| handleScanRequest(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, message); |
| } |
| break; |
| /* Ignore connection to same network */ |
| case WifiManager.CONNECT_NETWORK: |
| int netId = message.arg1; |
| if (mWifiInfo.getNetworkId() == netId) { |
| break; |
| } |
| return NOT_HANDLED; |
| case WifiManager.SAVE_NETWORK: |
| WifiConfiguration config = (WifiConfiguration) message.obj; |
| int nid = config.networkId; |
| if (config == null) { |
| loge("SAVE_NETWORK-L2 id=" + Integer.toString(nid) |
| + " " + mSupplicantStateTracker.getSupplicantStateName() |
| + " my state " + getCurrentState().getName()); |
| } else { |
| loge("SAVE_NETWORK-L2 id=" + Integer.toString(nid) |
| + " SSID=" + config.SSID |
| + " cnid=" + config.networkId |
| + " autojoin=" + Integer.toString(config.autoJoinStatus) |
| + " supstate=" + mSupplicantStateTracker.getSupplicantStateName() |
| + " my state " + getCurrentState().getName() |
| + " uid " + Integer.toString(config.creatorUid)); |
| } |
| |
| NetworkUpdateResult result = mWifiConfigStore.saveNetwork(config); |
| if (mWifiInfo.getNetworkId() == result.getNetworkId()) { |
| if (result.hasIpChanged()) { |
| // We switched from DHCP to static or from static to DHCP, or the |
| // static IP address has changed. |
| log("Reconfiguring IP on connection"); |
| // TODO: clear addresses and disable IPv6 to simplify obtainingIpState. |
| transitionTo(mObtainingIpState); |
| } |
| if (result.hasProxyChanged()) { |
| log("Reconfiguring proxy on connection"); |
| updateLinkProperties(CMD_UPDATE_LINKPROPERTIES); |
| } |
| } |
| |
| if (result.getNetworkId() != WifiConfiguration.INVALID_NETWORK_ID) { |
| replyToMessage(message, WifiManager.SAVE_NETWORK_SUCCEEDED); |
| if (VDBG) { |
| loge("Success save network l2 nid=" |
| + Integer.toString(result.getNetworkId()) |
| + " autojoin " + mFrameworkAutoJoin.get()); |
| } |
| if (mFrameworkAutoJoin.get()) { |
| /* Tell autojoin the user did try to modify and save that network. |
| * and interpret the SAVE network command as a manual request to connect */ |
| mWifiAutoJoinController.updateConfigurationHistory(config.networkId, |
| true, true); |
| mWifiAutoJoinController.attemptAutoJoin(); |
| } |
| } else { |
| loge("Failed to save network"); |
| replyToMessage(message, WifiManager.SAVE_NETWORK_FAILED, |
| WifiManager.ERROR); |
| } |
| break; |
| /* Ignore */ |
| case WifiMonitor.NETWORK_CONNECTION_EVENT: |
| break; |
| case CMD_RSSI_POLL: |
| if (message.arg1 == mRssiPollToken) { |
| WifiLinkLayerStats stats = null; |
| // Try a reading L2 stats a couple of time, allow for a few failures |
| // in case the HAL/drivers are not completely initialized once we get there |
| if (mWifiLinkLayerStatsSupported > 0) { |
| stats = mWifiNative.getWifiLinkLayerStats(); |
| if (stats == null && mWifiLinkLayerStatsSupported > 0) { |
| mWifiLinkLayerStatsSupported -= 1; |
| } |
| } |
| // Get Info and continue polling |
| fetchRssiLinkSpeedAndFrequencyNative(); |
| calculateWifiScore(stats); |
| sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, |
| mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); |
| } else { |
| // Polling has completed |
| } |
| break; |
| case CMD_ENABLE_RSSI_POLL: |
| mEnableRssiPolling = (message.arg1 == 1); |
| mRssiPollToken++; |
| if (mEnableRssiPolling) { |
| // First poll |
| fetchRssiLinkSpeedAndFrequencyNative(); |
| sendMessageDelayed(obtainMessage(CMD_RSSI_POLL, |
| mRssiPollToken, 0), POLL_RSSI_INTERVAL_MSECS); |
| } |
| break; |
| case WifiManager.RSSI_PKTCNT_FETCH: |
| RssiPacketCountInfo info = new RssiPacketCountInfo(); |
| fetchRssiLinkSpeedAndFrequencyNative(); |
| info.rssi = mWifiInfo.getRssi(); |
| fetchPktcntNative(info); |
| replyToMessage(message, WifiManager.RSSI_PKTCNT_FETCH_SUCCEEDED, info); |
| break; |
| case CMD_UNWANTED_NETWORK: |
| // mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); |
| // disconnecting is probably too rough and reduce the chance we recover quickly. |
| // we should not have to disconnect, instead rely on network stack to send data |
| // traffic somewhere else but remember that this network is roamable with a |
| // low wifi score threshold |
| sendMessage(CMD_DISCONNECT); |
| break; |
| case CMD_DELAYED_NETWORK_DISCONNECT: |
| if (!linkDebouncing) { |
| // Ignore if we are not debouncing |
| loge("CMD_DELAYED_NETWORK_DISCONNECT and not debouncing - ignore " + message.arg1); |
| return HANDLED; |
| } else { |
| loge("CMD_DELAYED_NETWORK_DISCONNECT and debouncing - disconnect " + message.arg1); |
| |
| linkDebouncing = false; |
| // If we are still debouncing while this message comes, |
| // it means we were not able to reconnect within the alloted time |
| // = LINK_FLAPPING_DEBOUNCE_MSEC |
| // and thus, trigger a real disconnect |
| handleNetworkDisconnect(); |
| transitionTo(mDisconnectedState); |
| } |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| |
| return HANDLED; |
| } |
| } |
| |
| class ObtainingIpState extends State { |
| @Override |
| public void enter() { |
| if (DBG) { |
| String key = ""; |
| if (getCurrentWifiConfiguration() != null) { |
| key = getCurrentWifiConfiguration().configKey(); |
| } |
| log("enter ObtainingIpState netId=" + Integer.toString(mLastNetworkId) |
| + " " + key + " " |
| + " roam=" + mAutoRoaming |
| + " static=" + mWifiConfigStore.isUsingStaticIp(mLastNetworkId) |
| + " watchdog= " + obtainingIpWatchdogCount); |
| } |
| |
| // Reset link Debouncing, indicating we have successfully re-connected to the AP |
| // We might still be roaming |
| linkDebouncing = false; |
| |
| try { |
| mNwService.enableIpv6(mInterfaceName); |
| } catch (RemoteException re) { |
| loge("Failed to enable IPv6: " + re); |
| } catch (IllegalStateException e) { |
| loge("Failed to enable IPv6: " + e); |
| } |
| |
| if (!mWifiConfigStore.isUsingStaticIp(mLastNetworkId)) { |
| // TODO: If we're switching between static IP configuration and DHCP, remove the |
| // static configuration first. |
| if (isRoaming()) { |
| renewDhcp(); |
| } else { |
| startDhcp(); |
| } |
| obtainingIpWatchdogCount++; |
| loge("Start Dhcp Watchdog " + obtainingIpWatchdogCount); |
| sendMessageDelayed(obtainMessage(CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER, |
| obtainingIpWatchdogCount, 0), OBTAINING_IP_ADDRESS_GUARD_TIMER_MSEC); |
| } else { |
| // stop any running dhcp before assigning static IP |
| stopDhcp(); |
| DhcpResults dhcpResults = new DhcpResults( |
| mWifiConfigStore.getLinkProperties(mLastNetworkId)); |
| InterfaceConfiguration ifcg = new InterfaceConfiguration(); |
| Iterator<LinkAddress> addrs = |
| dhcpResults.linkProperties.getLinkAddresses().iterator(); |
| if (!addrs.hasNext()) { |
| loge("Static IP lacks address"); |
| sendMessage(CMD_STATIC_IP_FAILURE); |
| } else { |
| ifcg.setLinkAddress(addrs.next()); |
| ifcg.setInterfaceUp(); |
| try { |
| mNwService.setInterfaceConfig(mInterfaceName, ifcg); |
| if (DBG) log("Static IP configuration succeeded"); |
| sendMessage(CMD_STATIC_IP_SUCCESS, dhcpResults); |
| } catch (RemoteException re) { |
| loge("Static IP configuration failed: " + re); |
| sendMessage(CMD_STATIC_IP_FAILURE); |
| } catch (IllegalStateException e) { |
| loge("Static IP configuration failed: " + e); |
| sendMessage(CMD_STATIC_IP_FAILURE); |
| } |
| } |
| } |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_STATIC_IP_SUCCESS: |
| handleIPv4Success((DhcpResults) message.obj, CMD_STATIC_IP_SUCCESS); |
| break; |
| case CMD_STATIC_IP_FAILURE: |
| handleIPv4Failure(CMD_STATIC_IP_FAILURE); |
| break; |
| case WifiManager.SAVE_NETWORK: |
| deferMessage(message); |
| break; |
| /* Defer any power mode changes since we must keep active power mode at DHCP */ |
| case CMD_SET_HIGH_PERF_MODE: |
| deferMessage(message); |
| break; |
| /* Defer scan request since we should not switch to other channels at DHCP */ |
| case CMD_START_SCAN: |
| deferMessage(message); |
| break; |
| case CMD_OBTAINING_IP_ADDRESS_WATCHDOG_TIMER: |
| if (message.arg1 == obtainingIpWatchdogCount) { |
| loge("ObtainingIpAddress: Watchdog Triggered, count=" + obtainingIpWatchdogCount); |
| handleIpConfigurationLost(); |
| transitionTo(mDisconnectingState); |
| break; |
| } |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class VerifyingLinkState extends State { |
| @Override |
| public void enter() { |
| log(getName() + " enter"); |
| setNetworkDetailedState(DetailedState.VERIFYING_POOR_LINK); |
| mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.VERIFYING_POOR_LINK); |
| sendNetworkStateChangeBroadcast(mLastBssid); |
| // End roaming |
| mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch (message.what) { |
| case WifiWatchdogStateMachine.POOR_LINK_DETECTED: |
| // Stay here |
| log(getName() + " POOR_LINK_DETECTED: no transition"); |
| break; |
| case WifiWatchdogStateMachine.GOOD_LINK_DETECTED: |
| log(getName() + " GOOD_LINK_DETECTED: transition to captive portal check"); |
| |
| log(getName() + " GOOD_LINK_DETECTED: transition to CONNECTED"); |
| sendConnectedState(); |
| transitionTo(mConnectedState); |
| break; |
| case CMD_START_SCAN: |
| deferMessage(message); |
| break; |
| default: |
| if (DBG) log(getName() + " what=" + message.what + " NOT_HANDLED"); |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| private void sendConnectedState() { |
| // Send out a broadcast with the CAPTIVE_PORTAL_CHECK to preserve |
| // existing behaviour. The captive portal check really happens after we |
| // transition into DetailedState.CONNECTED. |
| setNetworkDetailedState(DetailedState.CAPTIVE_PORTAL_CHECK); |
| mWifiConfigStore.updateStatus(mLastNetworkId, |
| DetailedState.CAPTIVE_PORTAL_CHECK); |
| sendNetworkStateChangeBroadcast(mLastBssid); |
| |
| setNetworkDetailedState(DetailedState.CONNECTED); |
| mWifiConfigStore.updateStatus(mLastNetworkId, DetailedState.CONNECTED); |
| sendNetworkStateChangeBroadcast(mLastBssid); |
| } |
| |
| class RoamingState extends State { |
| @Override |
| public void enter() { |
| if (DBG) { |
| log("RoamingState Enter" |
| + " mScreenOn=" + mScreenOn ); |
| } |
| setScanAlarm(false); |
| //TODO: actually implement an alarm, but so as to disconnect if roaming fails |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch (message.what) { |
| case WifiWatchdogStateMachine.POOR_LINK_DETECTED: |
| if (DBG) log("Roaming and Watchdog reports poor link -> ignore"); |
| return HANDLED; |
| case CMD_UNWANTED_NETWORK: |
| if (DBG) log("Roaming and CS doesnt want the network -> ignore"); |
| return HANDLED; |
| case CMD_SET_OPERATIONAL_MODE: |
| if (message.arg1 != CONNECT_MODE) { |
| deferMessage(message); |
| } |
| break; |
| case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: |
| /** |
| * If we get a SUPPLICANT_STATE_CHANGE_EVENT indicating a DISCONNECT |
| * before NETWORK_DISCONNECTION_EVENT |
| * And there is an associated BSSID corresponding to our target BSSID, then |
| * we have missed the network disconnection, transition to mDisconnectedState |
| * and handle the rest of the events there. |
| */ |
| StateChangeResult stateChangeResult = (StateChangeResult) message.obj; |
| if (stateChangeResult.state == SupplicantState.DISCONNECTED |
| || stateChangeResult.state == SupplicantState.INACTIVE |
| || stateChangeResult.state == SupplicantState.INTERFACE_DISABLED) { |
| if (DBG) { |
| log("STATE_CHANGE_EVENT in roaming state " |
| + stateChangeResult.toString() ); |
| } |
| if (stateChangeResult.BSSID != null |
| && stateChangeResult.BSSID.equals(mTargetRoamBSSID)) { |
| setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); |
| handleNetworkDisconnect(); |
| } |
| } |
| break; |
| case WifiMonitor.NETWORK_CONNECTION_EVENT: |
| if (DBG) log("roaming and Network connection established"); |
| mLastNetworkId = message.arg1; |
| mLastBssid = (String) message.obj; |
| mWifiInfo.setBSSID(mLastBssid); |
| mWifiInfo.setNetworkId(mLastNetworkId); |
| mWifiConfigStore.handleBSSIDBlackList(mLastNetworkId, mLastBssid, true); |
| /** |
| * We already have an IP address, we are going to the ObtainingIpAddress |
| * state to renew it. Other parts of the system interpret an |
| * ObtainingIpState change as not having IP address anymore, |
| * hence, don't send the state change there. */ |
| // setNetworkDetailedState(DetailedState.OBTAINING_IPADDR); |
| // sendNetworkStateChangeBroadcast(mLastBssid); |
| transitionTo(mObtainingIpState); |
| break; |
| case WifiMonitor.NETWORK_DISCONNECTION_EVENT: |
| // Throw away but only if it correspond to the network we're roaming to |
| String bssid = (String)message.obj; |
| if (DBG) { |
| log("NETWORK_DISCONNECTION_EVENT in roaming state" |
| + " BSSID=" + bssid ); |
| } |
| if (bssid != null && bssid.equals(mTargetRoamBSSID)) { |
| handleNetworkDisconnect(); |
| } |
| break; |
| case WifiMonitor.SSID_TEMP_DISABLED: |
| // Auth error while roaming |
| if (message.arg1 == mLastNetworkId) { |
| loge("DISABLED while roaming nid=" + Integer.toString(mLastNetworkId)); |
| sendMessage(CMD_DISCONNECT); |
| transitionTo(mDisconnectingState); |
| } |
| return NOT_HANDLED; |
| case CMD_START_SCAN: |
| deferMessage(message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| |
| @Override |
| public void exit() { |
| loge("WifiStateMachine: Leaving Roaming state"); |
| } |
| } |
| |
| class ConnectedState extends State { |
| @Override |
| public void enter() { |
| String address; |
| updateDefaultRouteMacAddress(1000); |
| if (DBG) { |
| log("ConnectedState Enter autojoin=" + mFrameworkAutoJoin.get() |
| + " mScreenOn=" + mScreenOn |
| + " scanperiod=" + Integer.toString(mConnectedScanPeriodMs) ); |
| } |
| if (mFrameworkAutoJoin.get() && mScreenOn) { |
| mCurrentScanAlarmMs = mConnectedScanPeriodMs; |
| setScanAlarm(true); |
| } else { |
| mCurrentScanAlarmMs = 0; |
| } |
| registerConnected(); |
| lastConnectAttempt = 0; |
| targetWificonfiguration = null; |
| // Paranoia |
| linkDebouncing = false; |
| |
| // Not roaming anymore |
| mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; |
| |
| if (testNetworkDisconnect) { |
| testNetworkDisconnectCounter++; |
| loge("ConnectedState Enter start disconnect test " + |
| testNetworkDisconnectCounter); |
| sendMessageDelayed(obtainMessage(CMD_TEST_NETWORK_DISCONNECT, |
| testNetworkDisconnectCounter, 0), 15000); |
| } |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch (message.what) { |
| case WifiWatchdogStateMachine.POOR_LINK_DETECTED: |
| if (DBG) log("Watchdog reports poor link"); |
| transitionTo(mVerifyingLinkState); |
| break; |
| case CMD_UNWANTED_NETWORK: |
| mWifiConfigStore.handleBadNetworkDisconnectReport(mLastNetworkId, mWifiInfo); |
| mWifiNative.disconnect(); |
| transitionTo(mDisconnectingState); |
| return HANDLED; |
| case CMD_TEST_NETWORK_DISCONNECT: |
| // Force a disconnect |
| if (message.arg1 == testNetworkDisconnectCounter) { |
| mWifiNative.disconnect(); |
| } |
| break; |
| case WifiMonitor.NETWORK_DISCONNECTION_EVENT: |
| if (!linkDebouncing && ( |
| (ScanResult.is24GHz(mWifiInfo.getFrequency()) |
| && mWifiInfo.getRssi() > |
| WifiConfiguration.BAD_RSSI_24) |
| || (ScanResult.is5GHz(mWifiInfo.getFrequency()) |
| && mWifiInfo.getRssi() > |
| WifiConfiguration.BAD_RSSI_5))) { |
| // Start de-bouncing the L2 disconnection: |
| // this L2 disconnection might be spurious. |
| // Hence we allow 7 seconds for the state machine to try |
| // to reconnect, go thru the |
| // roaming cycle and enter Obtaining IP address |
| // before signalling the disconnect to ConnectivityService and L3 |
| startScanForConfiguration(getCurrentWifiConfiguration(), false); |
| linkDebouncing = true; |
| |
| sendMessageDelayed(obtainMessage(CMD_DELAYED_NETWORK_DISCONNECT, |
| 0, mLastNetworkId), LINK_FLAPPING_DEBOUNCE_MSEC); |
| if (DBG) { |
| log("NETWORK_DISCONNECTION_EVENT in connected state" |
| + " BSSID=" + mWifiInfo.getBSSID() |
| + " RSSI=" + mWifiInfo.getRssi() |
| + " freq=" + mWifiInfo.getFrequency() |
| + " -> debounce"); |
| } |
| return HANDLED; |
| } else { |
| if (DBG) { |
| log("NETWORK_DISCONNECTION_EVENT in connected state" |
| + " BSSID=" + mWifiInfo.getBSSID() |
| + " RSSI=" + mWifiInfo.getRssi() |
| + " freq=" + mWifiInfo.getFrequency() |
| + " was debouncing=" + linkDebouncing); |
| } |
| } |
| break; |
| case CMD_AUTO_ROAM: |
| /* This will happen similarly to an Auto_CONNECT, except we specify the BSSID */ |
| /* Work Around: wpa_supplicant can get in a bad state where it returns a non |
| * associated status thus the STATUS command but somehow-someplace still thinks |
| * it is associated and thus will ignore select/reconnect command with |
| * following message: |
| * "Already associated with the selected network - do nothing" |
| * |
| * Hence, sends a disconnect to supplicant first. |
| */ |
| //mWifiNative.disconnect(); |
| |
| /* Connect command coming from auto-join */ |
| ScanResult candidate = (ScanResult)message.obj; |
| String bssid = "any"; |
| if (candidate != null) { |
| bssid = candidate.BSSID; |
| } |
| int netId = mLastNetworkId; |
| WifiConfiguration config = getCurrentWifiConfiguration(); |
| |
| loge("CMD_AUTO_ROAM sup state " |
| + mSupplicantStateTracker.getSupplicantStateName() |
| + " my state " + getCurrentState().getName() |
| + " nid=" + Integer.toString(netId) |
| + " roam=" + Integer.toString(message.arg2) |
| + bssid); |
| if (config == null) { |
| loge("AUTO_ROAM and no config, bail out..."); |
| break; |
| } |
| |
| /* Save the BSSID so as to lock it @ firmware */ |
| autoRoamSetBSSID(config, bssid); |
| |
| /* Save the network config */ |
| loge("CMD_AUTO_ROAM will save config -> " + config.SSID |
| + " nid=" + Integer.toString(netId)); |
| NetworkUpdateResult result = mWifiConfigStore.saveNetwork(config); |
| netId = result.getNetworkId(); |
| loge("CMD_AUTO_ROAM did save config -> " |
| + " nid=" + Integer.toString(netId)); |
| |
| if (mWifiConfigStore.selectNetwork(netId) && |
| mWifiNative.reassociate()) { |
| lastConnectAttempt = System.currentTimeMillis(); |
| targetWificonfiguration = mWifiConfigStore.getWifiConfiguration(netId); |
| |
| // replyToMessage(message, WifiManager.CONNECT_NETWORK_SUCCEEDED); |
| mAutoRoaming = message.arg2; |
| transitionTo(mRoamingState); |
| |
| } else { |
| loge("Failed to connect config: " + config + " netId: " + netId); |
| replyToMessage(message, WifiManager.CONNECT_NETWORK_FAILED, |
| WifiManager.ERROR); |
| break; |
| } |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| |
| @Override |
| public void exit() { |
| loge("WifiStateMachine: Leaving Connected state"); |
| setScanAlarm(false); |
| } |
| } |
| |
| class DisconnectingState extends State { |
| |
| @Override |
| public void enter() { |
| if (mFrameworkAutoJoin.get()) { |
| mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; |
| } else { |
| |
| mCurrentScanAlarmMs = mFrameworkScanIntervalMs; |
| } |
| |
| if (PDBG) { |
| loge(" Enter DisconnectingState State scan interval " + mFrameworkScanIntervalMs |
| + " mEnableBackgroundScan= " + mEnableBackgroundScan |
| + " screenOn=" + mScreenOn); |
| } |
| if (mScreenOn) |
| setScanAlarm(true); |
| } |
| |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| switch (message.what) { |
| case CMD_SET_OPERATIONAL_MODE: |
| if (message.arg1 != CONNECT_MODE) { |
| deferMessage(message); |
| } |
| break; |
| case CMD_START_SCAN: |
| // Ignore scans while disconnecting |
| return HANDLED; |
| 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; |
| } |
| |
| @Override |
| public void exit() { |
| mCurrentScanAlarmMs = 0; |
| } |
| } |
| |
| class DisconnectedState extends State { |
| @Override |
| public void enter() { |
| // We dont scan frequently if this is a temporary disconnect |
| // due to p2p |
| if (mTemporarilyDisconnectWifi) { |
| mWifiP2pChannel.sendMessage(WifiP2pServiceImpl.DISCONNECT_WIFI_RESPONSE); |
| return; |
| } |
| |
| // Loose the last selection choice |
| // mWifiAutoJoinController.setLastSelectedConfiguration |
| // (WifiConfiguration.INVALID_NETWORK_ID); |
| |
| mFrameworkScanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), |
| Settings.Global.WIFI_FRAMEWORK_SCAN_INTERVAL_MS, |
| mDefaultFrameworkScanIntervalMs); |
| |
| if (mFrameworkAutoJoin.get()) { |
| if (mScreenOn) |
| mCurrentScanAlarmMs = mDisconnectedScanPeriodMs; |
| } else { |
| mCurrentScanAlarmMs = mFrameworkScanIntervalMs; |
| } |
| |
| if (PDBG) { |
| loge(" Enter disconnected State scan interval " + mFrameworkScanIntervalMs |
| + " mEnableBackgroundScan= " + mEnableBackgroundScan |
| + " screenOn=" + mScreenOn); |
| } |
| |
| /** clear the roaming state, if we were roaming, we failed */ |
| mAutoRoaming = WifiAutoJoinController.AUTO_JOIN_IDLE; |
| |
| /** |
| * mFrameworkAutoJoin is False: We initiate background scanning if it is enabled, |
| * otherwise we initiate an infrequent scan that wakes up the device to ensure |
| * a user connects to an access point on the move |
| * |
| * mFrameworkAutoJoin is True: |
| * - screen dark and PNO supported => scan alarm disabled |
| * - everything else => scan alarm enabled with mDefaultFrameworkScanIntervalMs period |
| */ |
| if ((mScreenOn == false) && mEnableBackgroundScan) { //mEnableBackgroundScan) { |
| /* If a regular scan result is pending, do not initiate background |
| * scan until the scan results are returned. This is needed because |
| * initiating a background scan will cancel the regular scan and |
| * scan results will not be returned until background scanning is |
| * cleared |
| */ |
| if (!mIsScanOngoing) { |
| mWifiNative.enableBackgroundScan(true); |
| } |
| } else { |
| setScanAlarm(true); |
| } |
| |
| if (mFrameworkAutoJoin.get() && mScreenOn && isScanAllowed()) { |
| startScanNative(WifiNative.SCAN_WITHOUT_CONNECTION_SETUP, null); |
| } |
| |
| /** |
| * If we have no networks saved, the supplicant stops doing the periodic scan. |
| * The scans are useful to notify the user of the presence of an open network. |
| * Note that these are not wake up scans. |
| */ |
| if (!mP2pConnected.get() && mWifiConfigStore.getConfiguredNetworks().size() == 0) { |
| sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, |
| ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); |
| } |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| boolean ret = HANDLED; |
| |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch (message.what) { |
| case CMD_NO_NETWORKS_PERIODIC_SCAN: |
| if (mP2pConnected.get()) break; |
| if (message.arg1 == mPeriodicScanToken && |
| mWifiConfigStore.getConfiguredNetworks().size() == 0) { |
| startScan(UNKNOWN_SCAN_SOURCE, null, null); |
| sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, |
| ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); |
| } |
| break; |
| case WifiManager.FORGET_NETWORK: |
| case CMD_REMOVE_NETWORK: |
| // Set up a delayed message here. After the forget/remove is handled |
| // the handled delayed message will determine if there is a need to |
| // scan and continue |
| sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, |
| ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); |
| ret = NOT_HANDLED; |
| break; |
| case CMD_SET_OPERATIONAL_MODE: |
| if (message.arg1 != CONNECT_MODE) { |
| mOperationalMode = message.arg1; |
| |
| mWifiConfigStore.disableAllNetworks(); |
| if (mOperationalMode == SCAN_ONLY_WITH_WIFI_OFF_MODE) { |
| mWifiP2pChannel.sendMessage(CMD_DISABLE_P2P_REQ); |
| setWifiState(WIFI_STATE_DISABLED); |
| } |
| |
| transitionTo(mScanModeState); |
| } |
| break; |
| case CMD_ENABLE_BACKGROUND_SCAN: |
| mEnableBackgroundScan = (message.arg1 == 1); |
| loge("enableBackgroundScanCommand enabled=" + mEnableBackgroundScan |
| + " suppState:" + mSupplicantStateTracker.getSupplicantStateName()); |
| |
| if (mEnableBackgroundScan) { |
| mWifiNative.enableBackgroundScan(true); |
| setScanAlarm(false); |
| } else { |
| if (mFrameworkAutoJoin.get()) { |
| // Tell supplicant to disconnect so as it doesnt start scanning |
| // for connection upon disabling background scan |
| mWifiNative.disconnect(); |
| } |
| mWifiNative.enableBackgroundScan(false); |
| setScanAlarm(true); |
| } |
| break; |
| /* Ignore network disconnect */ |
| case WifiMonitor.NETWORK_DISCONNECTION_EVENT: |
| break; |
| case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: |
| StateChangeResult stateChangeResult = (StateChangeResult) message.obj; |
| setNetworkDetailedState(WifiInfo.getDetailedStateOf(stateChangeResult.state)); |
| /* ConnectModeState does the rest of the handling */ |
| ret = NOT_HANDLED; |
| break; |
| case CMD_START_SCAN: |
| if (!isScanAllowed()) { |
| // Ignore the scan request |
| return HANDLED; |
| } |
| /* Disable background scan temporarily during a regular scan */ |
| if (mEnableBackgroundScan) { |
| mWifiNative.enableBackgroundScan(false); |
| } |
| /* Handled in parent state */ |
| ret = NOT_HANDLED; |
| break; |
| case WifiMonitor.SCAN_RESULTS_EVENT: |
| /* Re-enable background scan when a pending scan result is received */ |
| if (mEnableBackgroundScan && mIsScanOngoing) { |
| mWifiNative.enableBackgroundScan(true); |
| } |
| /* Handled in parent state */ |
| ret = NOT_HANDLED; |
| break; |
| case WifiP2pServiceImpl.P2P_CONNECTION_CHANGED: |
| NetworkInfo info = (NetworkInfo) message.obj; |
| mP2pConnected.set(info.isConnected()); |
| if (mP2pConnected.get()) { |
| int defaultInterval = mContext.getResources().getInteger( |
| R.integer.config_wifi_scan_interval_p2p_connected); |
| long scanIntervalMs = Settings.Global.getLong(mContext.getContentResolver(), |
| Settings.Global.WIFI_SCAN_INTERVAL_WHEN_P2P_CONNECTED_MS, |
| defaultInterval); |
| mWifiNative.setScanInterval((int) scanIntervalMs/1000); |
| } else if (mWifiConfigStore.getConfiguredNetworks().size() == 0) { |
| if (DBG) log("Turn on scanning after p2p disconnected"); |
| sendMessageDelayed(obtainMessage(CMD_NO_NETWORKS_PERIODIC_SCAN, |
| ++mPeriodicScanToken, 0), mSupplicantScanIntervalMs); |
| } |
| 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; |
| default: |
| ret = NOT_HANDLED; |
| } |
| return ret; |
| } |
| |
| @Override |
| public void exit() { |
| /* No need for a background scan upon exit from a disconnected state */ |
| if (mEnableBackgroundScan) { |
| mWifiNative.enableBackgroundScan(false); |
| } |
| mCurrentScanAlarmMs = 0; |
| setScanAlarm(false); |
| } |
| } |
| |
| class WpsRunningState extends State { |
| // Tracks the source to provide a reply |
| private Message mSourceMessage; |
| @Override |
| public void enter() { |
| mSourceMessage = Message.obtain(getCurrentMessage()); |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch (message.what) { |
| case WifiMonitor.WPS_SUCCESS_EVENT: |
| // Ignore intermediate success, wait for full connection |
| break; |
| case WifiMonitor.NETWORK_CONNECTION_EVENT: |
| replyToMessage(mSourceMessage, WifiManager.WPS_COMPLETED); |
| mSourceMessage.recycle(); |
| mSourceMessage = null; |
| deferMessage(message); |
| transitionTo(mDisconnectedState); |
| break; |
| case WifiMonitor.WPS_OVERLAP_EVENT: |
| replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, |
| WifiManager.WPS_OVERLAP_ERROR); |
| mSourceMessage.recycle(); |
| mSourceMessage = null; |
| transitionTo(mDisconnectedState); |
| break; |
| case WifiMonitor.WPS_FAIL_EVENT: |
| // Arg1 has the reason for the failure |
| if ((message.arg1 != WifiManager.ERROR) || (message.arg2 != 0)) { |
| replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, message.arg1); |
| mSourceMessage.recycle(); |
| mSourceMessage = null; |
| transitionTo(mDisconnectedState); |
| } else { |
| if (DBG) log("Ignore unspecified fail event during WPS connection"); |
| } |
| break; |
| case WifiMonitor.WPS_TIMEOUT_EVENT: |
| replyToMessage(mSourceMessage, WifiManager.WPS_FAILED, |
| WifiManager.WPS_TIMED_OUT); |
| mSourceMessage.recycle(); |
| mSourceMessage = null; |
| transitionTo(mDisconnectedState); |
| break; |
| case WifiManager.START_WPS: |
| replyToMessage(message, WifiManager.WPS_FAILED, WifiManager.IN_PROGRESS); |
| break; |
| case WifiManager.CANCEL_WPS: |
| if (mWifiNative.cancelWps()) { |
| replyToMessage(message, WifiManager.CANCEL_WPS_SUCCEDED); |
| } else { |
| replyToMessage(message, WifiManager.CANCEL_WPS_FAILED, WifiManager.ERROR); |
| } |
| transitionTo(mDisconnectedState); |
| break; |
| /** |
| * Defer all commands that can cause connections to a different network |
| * or put the state machine out of connect mode |
| */ |
| case CMD_STOP_DRIVER: |
| case CMD_SET_OPERATIONAL_MODE: |
| case WifiManager.CONNECT_NETWORK: |
| case CMD_ENABLE_NETWORK: |
| case CMD_RECONNECT: |
| case CMD_REASSOCIATE: |
| deferMessage(message); |
| break; |
| case CMD_AUTO_CONNECT: |
| case CMD_AUTO_ROAM: |
| case CMD_START_SCAN: |
| return HANDLED; |
| case WifiMonitor.NETWORK_DISCONNECTION_EVENT: |
| if (DBG) log("Network connection lost"); |
| handleNetworkDisconnect(); |
| break; |
| case WifiMonitor.ASSOCIATION_REJECTION_EVENT: |
| if (DBG) log("Ignore Assoc reject event during WPS Connection"); |
| break; |
| case WifiMonitor.AUTHENTICATION_FAILURE_EVENT: |
| // Disregard auth failure events during WPS connection. The |
| // EAP sequence is retried several times, and there might be |
| // failures (especially for wps pin). We will get a WPS_XXX |
| // event at the end of the sequence anyway. |
| if (DBG) log("Ignore auth failure during WPS connection"); |
| break; |
| case WifiMonitor.SUPPLICANT_STATE_CHANGE_EVENT: |
| // Throw away supplicant state changes when WPS is running. |
| // We will start getting supplicant state changes once we get |
| // a WPS success or failure |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| |
| @Override |
| public void exit() { |
| mWifiConfigStore.enableAllNetworks(); |
| mWifiConfigStore.loadConfiguredNetworks(); |
| } |
| } |
| |
| class SoftApStartingState extends State { |
| @Override |
| public void enter() { |
| final Message message = getCurrentMessage(); |
| if (message.what == CMD_START_AP) { |
| final WifiConfiguration config = (WifiConfiguration) message.obj; |
| |
| if (config == null) { |
| mWifiApConfigChannel.sendMessage(CMD_REQUEST_AP_CONFIG); |
| } else { |
| mWifiApConfigChannel.sendMessage(CMD_SET_AP_CONFIG, config); |
| startSoftApWithConfig(config); |
| } |
| } else { |
| throw new RuntimeException("Illegal transition to SoftApStartingState: " + message); |
| } |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_START_SUPPLICANT: |
| case CMD_STOP_SUPPLICANT: |
| case CMD_START_AP: |
| case CMD_STOP_AP: |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case CMD_SET_OPERATIONAL_MODE: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_START_PACKET_FILTERING: |
| case CMD_STOP_PACKET_FILTERING: |
| case CMD_TETHER_STATE_CHANGE: |
| deferMessage(message); |
| break; |
| case WifiStateMachine.CMD_RESPONSE_AP_CONFIG: |
| WifiConfiguration config = (WifiConfiguration) message.obj; |
| if (config != null) { |
| startSoftApWithConfig(config); |
| } else { |
| loge("Softap config is null!"); |
| sendMessage(CMD_START_AP_FAILURE); |
| } |
| break; |
| case CMD_START_AP_SUCCESS: |
| setWifiApState(WIFI_AP_STATE_ENABLED); |
| transitionTo(mSoftApStartedState); |
| break; |
| case CMD_START_AP_FAILURE: |
| setWifiApState(WIFI_AP_STATE_FAILED); |
| transitionTo(mInitialState); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class SoftApStartedState extends State { |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_STOP_AP: |
| if (DBG) log("Stopping Soft AP"); |
| /* We have not tethered at this point, so we just shutdown soft Ap */ |
| try { |
| mNwService.stopAccessPoint(mInterfaceName); |
| } catch(Exception e) { |
| loge("Exception in stopAccessPoint()"); |
| } |
| setWifiApState(WIFI_AP_STATE_DISABLED); |
| transitionTo(mInitialState); |
| break; |
| case CMD_START_AP: |
| // Ignore a start on a running access point |
| break; |
| // Fail client mode operation when soft AP is enabled |
| case CMD_START_SUPPLICANT: |
| loge("Cannot start supplicant with a running soft AP"); |
| setWifiState(WIFI_STATE_UNKNOWN); |
| break; |
| case CMD_TETHER_STATE_CHANGE: |
| TetherStateChange stateChange = (TetherStateChange) message.obj; |
| if (startTethering(stateChange.available)) { |
| transitionTo(mTetheringState); |
| } |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class TetheringState extends State { |
| @Override |
| public void enter() { |
| /* Send ourselves a delayed message to shut down if tethering fails to notify */ |
| sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, |
| ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_TETHER_STATE_CHANGE: |
| TetherStateChange stateChange = (TetherStateChange) message.obj; |
| if (isWifiTethered(stateChange.active)) { |
| transitionTo(mTetheredState); |
| } |
| return HANDLED; |
| case CMD_TETHER_NOTIFICATION_TIMED_OUT: |
| if (message.arg1 == mTetherToken) { |
| loge("Failed to get tether update, shutdown soft access point"); |
| transitionTo(mSoftApStartedState); |
| // Needs to be first thing handled |
| sendMessageAtFrontOfQueue(CMD_STOP_AP); |
| } |
| break; |
| case CMD_START_SUPPLICANT: |
| case CMD_STOP_SUPPLICANT: |
| case CMD_START_AP: |
| case CMD_STOP_AP: |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case CMD_SET_OPERATIONAL_MODE: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_START_PACKET_FILTERING: |
| case CMD_STOP_PACKET_FILTERING: |
| deferMessage(message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class TetheredState extends State { |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_TETHER_STATE_CHANGE: |
| TetherStateChange stateChange = (TetherStateChange) message.obj; |
| if (!isWifiTethered(stateChange.active)) { |
| loge("Tethering reports wifi as untethered!, shut down soft Ap"); |
| setHostApRunning(null, false); |
| setHostApRunning(null, true); |
| } |
| return HANDLED; |
| case CMD_STOP_AP: |
| if (DBG) log("Untethering before stopping AP"); |
| setWifiApState(WIFI_AP_STATE_DISABLING); |
| stopTethering(); |
| transitionTo(mUntetheringState); |
| // More work to do after untethering |
| deferMessage(message); |
| break; |
| default: |
| return NOT_HANDLED; |
| } |
| return HANDLED; |
| } |
| } |
| |
| class UntetheringState extends State { |
| @Override |
| public void enter() { |
| /* Send ourselves a delayed message to shut down if tethering fails to notify */ |
| sendMessageDelayed(obtainMessage(CMD_TETHER_NOTIFICATION_TIMED_OUT, |
| ++mTetherToken, 0), TETHER_NOTIFICATION_TIME_OUT_MSECS); |
| |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| logStateAndMessage(message, getClass().getSimpleName()); |
| |
| switch(message.what) { |
| case CMD_TETHER_STATE_CHANGE: |
| TetherStateChange stateChange = (TetherStateChange) message.obj; |
| |
| /* Wait till wifi is untethered */ |
| if (isWifiTethered(stateChange.active)) break; |
| |
| transitionTo(mSoftApStartedState); |
| break; |
| case CMD_TETHER_NOTIFICATION_TIMED_OUT: |
| if (message.arg1 == mTetherToken) { |
| loge("Failed to get tether update, force stop access point"); |
| transitionTo(mSoftApStartedState); |
| } |
| break; |
| case CMD_START_SUPPLICANT: |
| case CMD_STOP_SUPPLICANT: |
| case CMD_START_AP: |
| case CMD_STOP_AP: |
| case CMD_START_DRIVER: |
| case CMD_STOP_DRIVER: |
| case CMD_SET_OPERATIONAL_MODE: |
| case CMD_SET_COUNTRY_CODE: |
| case CMD_SET_FREQUENCY_BAND: |
| case CMD_START_PACKET_FILTERING: |
| case CMD_STOP_PACKET_FILTERING: |
| deferMessage(message); |
| 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 = obtainMessageWithArg2(msg); |
| dstMsg.what = what; |
| mReplyChannel.replyToMessage(msg, dstMsg); |
| } |
| |
| private void replyToMessage(Message msg, int what, int arg1) { |
| if (msg.replyTo == null) return; |
| Message dstMsg = obtainMessageWithArg2(msg); |
| dstMsg.what = what; |
| dstMsg.arg1 = arg1; |
| mReplyChannel.replyToMessage(msg, dstMsg); |
| } |
| |
| private void replyToMessage(Message msg, int what, Object obj) { |
| if (msg.replyTo == null) return; |
| Message dstMsg = obtainMessageWithArg2(msg); |
| dstMsg.what = 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 |
| |
| * see WifiManager for details |
| */ |
| private Message obtainMessageWithArg2(Message srcMsg) { |
| Message msg = Message.obtain(); |
| msg.arg2 = srcMsg.arg2; |
| return msg; |
| } |
| |
| private static int parseHex(char ch) { |
| if ('0' <= ch && ch <= '9') { |
| return ch - '0'; |
| } else if ('a' <= ch && ch <= 'f') { |
| return ch - 'a' + 10; |
| } else if ('A' <= ch && ch <= 'F') { |
| return ch - 'A' + 10; |
| } else { |
| throw new NumberFormatException("" + ch + " is not a valid hex digit"); |
| } |
| } |
| |
| private byte[] parseHex(String hex) { |
| /* This only works for good input; don't throw bad data at it */ |
| if (hex == null) { |
| return new byte[0]; |
| } |
| |
| if (hex.length() % 2 != 0) { |
| throw new NumberFormatException(hex + " is not a valid hex string"); |
| } |
| |
| byte[] result = new byte[(hex.length())/2]; |
| for (int i = 0, j = 0; i < hex.length(); i += 2, j++) { |
| |
| int val = parseHex(hex.charAt(i)) * 16 + parseHex(hex.charAt(i+1)); |
| byte b = (byte) (val & 0xFF); |
| result[j] = b; |
| } |
| |
| return result; |
| } |
| |
| private static String makeHex(byte[] bytes) { |
| StringBuilder sb = new StringBuilder(); |
| for (byte b : bytes) { |
| sb.append(String.format("%02x", b)); |
| } |
| return sb.toString(); |
| } |
| |
| private static byte[] concat(byte[] array1, byte[] array2, byte[] array3) { |
| |
| int len = array1.length + array2.length + array3.length; |
| |
| if (array1.length != 0) { |
| len++; /* add another byte for size */ |
| } |
| |
| if (array2.length != 0) { |
| len++; /* add another byte for size */ |
| } |
| |
| if (array3.length != 0) { |
| len++; /* add another byte for size */ |
| } |
| |
| byte[] result = new byte[len]; |
| |
| int index = 0; |
| if (array1.length != 0) { |
| result[index] = (byte) (array1.length & 0xFF); |
| index++; |
| for (byte b : array1) { |
| result[index] = b; |
| index++; |
| } |
| } |
| |
| if (array2.length != 0) { |
| result[index] = (byte) (array2.length & 0xFF); |
| index++; |
| for (byte b : array2) { |
| result[index] = b; |
| index++; |
| } |
| } |
| |
| if (array3.length != 0) { |
| result[index] = (byte) (array3.length & 0xFF); |
| index++; |
| for (byte b : array3) { |
| result[index] = b; |
| index++; |
| } |
| } |
| return result; |
| } |
| |
| void handleSimAuthRequest(SimAuthRequestData requestData) { |
| if (targetWificonfiguration == null |
| || targetWificonfiguration.networkId == requestData.networkId) { |
| logd("id matches targetWifiConfiguration"); |
| } else { |
| logd("id does not match targetWifiConfiguration"); |
| } |
| |
| logd("rand1 = " + requestData.rand1); |
| logd("rand2 = " + requestData.rand2); |
| logd("rand3 = " + requestData.rand3); |
| |
| byte[] rand1, rand2, rand3; |
| |
| try { |
| rand1 = parseHex(requestData.rand1); |
| rand2 = parseHex(requestData.rand2); |
| rand3 = parseHex(requestData.rand3); |
| } catch (NumberFormatException e) { |
| loge("malformed challenge"); |
| return; |
| } |
| |
| byte[] c = concat(rand1, rand2, rand3); |
| |
| String challenge = android.util.Base64.encodeToString(c, android.util.Base64.NO_WRAP); |
| |
| logd("challenge = " + challenge); |
| logd("challenge length = " + challenge.length()); |
| |
| TelephonyManager tm = (TelephonyManager) |
| mContext.getSystemService(Context.TELEPHONY_SERVICE); |
| |
| if (tm != null) { |
| /* |
| * appType = 1 => SIM, 2 => USIM according to |
| * com.android.internal.telephony.PhoneConstants#APPTYPE_xxx |
| */ |
| |
| int appType = 2; |
| String response = tm.getIccSimChallengeResponse(appType, challenge); |
| logd("Raw Response - " + response); |
| |
| if (response != null) { |
| byte[] result = android.util.Base64.decode(response, android.util.Base64.DEFAULT); |
| response = makeHex(result); |
| logd("Sim Response - " + response); |
| mWifiNative.simAuthResponse(requestData.networkId, response); |
| } else { |
| logd("bad response - " + response); |
| } |
| |
| } else { |
| loge("could not get telephony manager"); |
| } |
| |
| } |
| } |