| /* |
| * 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.connectivity; |
| |
| import android.app.Notification; |
| import android.app.NotificationManager; |
| import android.app.PendingIntent; |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothPan; |
| import android.bluetooth.BluetoothProfile; |
| import android.bluetooth.BluetoothProfile.ServiceListener; |
| import android.content.BroadcastReceiver; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.content.res.Resources; |
| import android.hardware.usb.UsbManager; |
| import android.net.ConnectivityManager; |
| import android.net.ConnectivityManager.NetworkCallback; |
| import android.net.INetworkStatsService; |
| import android.net.InterfaceConfiguration; |
| import android.net.LinkAddress; |
| import android.net.LinkProperties; |
| import android.net.Network; |
| import android.net.NetworkCapabilities; |
| import android.net.NetworkInfo; |
| import android.net.NetworkRequest; |
| import android.net.NetworkState; |
| import android.net.NetworkUtils; |
| import android.net.RouteInfo; |
| import android.net.wifi.WifiManager; |
| import android.os.Binder; |
| import android.os.Bundle; |
| import android.os.INetworkManagementService; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.Parcel; |
| import android.os.ResultReceiver; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.provider.Settings; |
| import android.telephony.CarrierConfigManager; |
| import android.telephony.TelephonyManager; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import android.util.SparseArray; |
| |
| import com.android.internal.telephony.IccCardConstants; |
| import com.android.internal.telephony.TelephonyIntents; |
| import com.android.internal.util.IState; |
| import com.android.internal.util.IndentingPrintWriter; |
| import com.android.internal.util.MessageUtils; |
| import com.android.internal.util.Protocol; |
| import com.android.internal.util.State; |
| import com.android.internal.util.StateMachine; |
| import com.android.server.IoThread; |
| import com.android.server.net.BaseNetworkObserver; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| import java.net.Inet4Address; |
| import java.net.InetAddress; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| |
| /** |
| * @hide |
| * |
| * Timeout |
| * |
| * TODO - look for parent classes and code sharing |
| */ |
| public class Tethering extends BaseNetworkObserver { |
| |
| private final Context mContext; |
| private final static String TAG = "Tethering"; |
| private final static boolean DBG = false; |
| private final static boolean VDBG = false; |
| |
| private static final Class[] messageClasses = { |
| Tethering.class, TetherMasterSM.class, TetherInterfaceSM.class |
| }; |
| private static final SparseArray<String> sMagicDecoderRing = |
| MessageUtils.findMessageNames(messageClasses); |
| |
| // TODO - remove both of these - should be part of interface inspection/selection stuff |
| private String[] mTetherableUsbRegexs; |
| private String[] mTetherableWifiRegexs; |
| private String[] mTetherableBluetoothRegexs; |
| private Collection<Integer> mUpstreamIfaceTypes; |
| |
| // used to synchronize public access to members |
| private final Object mPublicSync; |
| |
| private static final Integer MOBILE_TYPE = new Integer(ConnectivityManager.TYPE_MOBILE); |
| private static final Integer HIPRI_TYPE = new Integer(ConnectivityManager.TYPE_MOBILE_HIPRI); |
| private static final Integer DUN_TYPE = new Integer(ConnectivityManager.TYPE_MOBILE_DUN); |
| |
| // if we have to connect to mobile, what APN type should we use? Calculated by examining the |
| // upstream type list and the DUN_REQUIRED secure-setting |
| private int mPreferredUpstreamMobileApn = ConnectivityManager.TYPE_NONE; |
| |
| private final INetworkManagementService mNMService; |
| private final INetworkStatsService mStatsService; |
| private final Looper mLooper; |
| |
| private HashMap<String, TetherInterfaceSM> mIfaces; // all tethered/tetherable ifaces |
| |
| private BroadcastReceiver mStateReceiver; |
| |
| // {@link ComponentName} of the Service used to run tether provisioning. |
| private static final ComponentName TETHER_SERVICE = ComponentName.unflattenFromString(Resources |
| .getSystem().getString(com.android.internal.R.string.config_wifi_tether_enable)); |
| |
| private static final String USB_NEAR_IFACE_ADDR = "192.168.42.129"; |
| private static final int USB_PREFIX_LENGTH = 24; |
| |
| // USB is 192.168.42.1 and 255.255.255.0 |
| // Wifi is 192.168.43.1 and 255.255.255.0 |
| // BT is limited to max default of 5 connections. 192.168.44.1 to 192.168.48.1 |
| // with 255.255.255.0 |
| // P2P is 192.168.49.1 and 255.255.255.0 |
| |
| private String[] mDhcpRange; |
| private static final String[] DHCP_DEFAULT_RANGE = { |
| "192.168.42.2", "192.168.42.254", "192.168.43.2", "192.168.43.254", |
| "192.168.44.2", "192.168.44.254", "192.168.45.2", "192.168.45.254", |
| "192.168.46.2", "192.168.46.254", "192.168.47.2", "192.168.47.254", |
| "192.168.48.2", "192.168.48.254", "192.168.49.2", "192.168.49.254", |
| }; |
| |
| private String[] mDefaultDnsServers; |
| private static final String DNS_DEFAULT_SERVER1 = "8.8.8.8"; |
| private static final String DNS_DEFAULT_SERVER2 = "8.8.4.4"; |
| |
| private final StateMachine mTetherMasterSM; |
| private final UpstreamNetworkMonitor mUpstreamNetworkMonitor; |
| private String mCurrentUpstreamIface; |
| |
| private Notification.Builder mTetheredNotificationBuilder; |
| private int mLastNotificationId; |
| |
| private boolean mRndisEnabled; // track the RNDIS function enabled state |
| private boolean mUsbTetherRequested; // true if USB tethering should be started |
| // when RNDIS is enabled |
| |
| public Tethering(Context context, INetworkManagementService nmService, |
| INetworkStatsService statsService) { |
| mContext = context; |
| mNMService = nmService; |
| mStatsService = statsService; |
| |
| mPublicSync = new Object(); |
| |
| mIfaces = new HashMap<String, TetherInterfaceSM>(); |
| |
| // make our own thread so we don't anr the system |
| mLooper = IoThread.get().getLooper(); |
| mTetherMasterSM = new TetherMasterSM("TetherMaster", mLooper); |
| mTetherMasterSM.start(); |
| |
| mUpstreamNetworkMonitor = new UpstreamNetworkMonitor(); |
| |
| mStateReceiver = new StateReceiver(); |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(UsbManager.ACTION_USB_STATE); |
| filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION); |
| filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED); |
| mContext.registerReceiver(mStateReceiver, filter); |
| |
| filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_MEDIA_SHARED); |
| filter.addAction(Intent.ACTION_MEDIA_UNSHARED); |
| filter.addDataScheme("file"); |
| mContext.registerReceiver(mStateReceiver, filter); |
| |
| mDhcpRange = context.getResources().getStringArray( |
| com.android.internal.R.array.config_tether_dhcp_range); |
| if ((mDhcpRange.length == 0) || (mDhcpRange.length % 2 ==1)) { |
| mDhcpRange = DHCP_DEFAULT_RANGE; |
| } |
| |
| // load device config info |
| updateConfiguration(); |
| |
| // TODO - remove and rely on real notifications of the current iface |
| mDefaultDnsServers = new String[2]; |
| mDefaultDnsServers[0] = DNS_DEFAULT_SERVER1; |
| mDefaultDnsServers[1] = DNS_DEFAULT_SERVER2; |
| } |
| |
| // We can't do this once in the Tethering() constructor and cache the value, because the |
| // CONNECTIVITY_SERVICE is registered only after the Tethering() constructor has completed. |
| private ConnectivityManager getConnectivityManager() { |
| return (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE); |
| } |
| |
| void updateConfiguration() { |
| String[] tetherableUsbRegexs = mContext.getResources().getStringArray( |
| com.android.internal.R.array.config_tether_usb_regexs); |
| String[] tetherableWifiRegexs = mContext.getResources().getStringArray( |
| com.android.internal.R.array.config_tether_wifi_regexs); |
| String[] tetherableBluetoothRegexs = mContext.getResources().getStringArray( |
| com.android.internal.R.array.config_tether_bluetooth_regexs); |
| |
| int ifaceTypes[] = mContext.getResources().getIntArray( |
| com.android.internal.R.array.config_tether_upstream_types); |
| Collection<Integer> upstreamIfaceTypes = new ArrayList(); |
| for (int i : ifaceTypes) { |
| upstreamIfaceTypes.add(new Integer(i)); |
| } |
| |
| synchronized (mPublicSync) { |
| mTetherableUsbRegexs = tetherableUsbRegexs; |
| mTetherableWifiRegexs = tetherableWifiRegexs; |
| mTetherableBluetoothRegexs = tetherableBluetoothRegexs; |
| mUpstreamIfaceTypes = upstreamIfaceTypes; |
| } |
| |
| // check if the upstream type list needs to be modified due to secure-settings |
| checkDunRequired(); |
| } |
| |
| @Override |
| public void interfaceStatusChanged(String iface, boolean up) { |
| // Never called directly: only called from interfaceLinkStateChanged. |
| // See NetlinkHandler.cpp:71. |
| if (VDBG) Log.d(TAG, "interfaceStatusChanged " + iface + ", " + up); |
| boolean found = false; |
| boolean usb = false; |
| synchronized (mPublicSync) { |
| if (isWifi(iface)) { |
| found = true; |
| } else if (isUsb(iface)) { |
| found = true; |
| usb = true; |
| } else if (isBluetooth(iface)) { |
| found = true; |
| } |
| if (found == false) return; |
| |
| TetherInterfaceSM sm = mIfaces.get(iface); |
| if (up) { |
| if (sm == null) { |
| sm = new TetherInterfaceSM(iface, mLooper, usb); |
| mIfaces.put(iface, sm); |
| sm.start(); |
| } |
| } else { |
| if (isUsb(iface)) { |
| // ignore usb0 down after enabling RNDIS |
| // we will handle disconnect in interfaceRemoved instead |
| if (VDBG) Log.d(TAG, "ignore interface down for " + iface); |
| } else if (sm != null) { |
| sm.sendMessage(TetherInterfaceSM.CMD_INTERFACE_DOWN); |
| mIfaces.remove(iface); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void interfaceLinkStateChanged(String iface, boolean up) { |
| interfaceStatusChanged(iface, up); |
| } |
| |
| private boolean isUsb(String iface) { |
| synchronized (mPublicSync) { |
| for (String regex : mTetherableUsbRegexs) { |
| if (iface.matches(regex)) return true; |
| } |
| return false; |
| } |
| } |
| |
| public boolean isWifi(String iface) { |
| synchronized (mPublicSync) { |
| for (String regex : mTetherableWifiRegexs) { |
| if (iface.matches(regex)) return true; |
| } |
| return false; |
| } |
| } |
| |
| public boolean isBluetooth(String iface) { |
| synchronized (mPublicSync) { |
| for (String regex : mTetherableBluetoothRegexs) { |
| if (iface.matches(regex)) return true; |
| } |
| return false; |
| } |
| } |
| |
| @Override |
| public void interfaceAdded(String iface) { |
| if (VDBG) Log.d(TAG, "interfaceAdded " + iface); |
| boolean found = false; |
| boolean usb = false; |
| synchronized (mPublicSync) { |
| if (isWifi(iface)) { |
| found = true; |
| } |
| if (isUsb(iface)) { |
| found = true; |
| usb = true; |
| } |
| if (isBluetooth(iface)) { |
| found = true; |
| } |
| if (found == false) { |
| if (VDBG) Log.d(TAG, iface + " is not a tetherable iface, ignoring"); |
| return; |
| } |
| |
| TetherInterfaceSM sm = mIfaces.get(iface); |
| if (sm != null) { |
| if (VDBG) Log.d(TAG, "active iface (" + iface + ") reported as added, ignoring"); |
| return; |
| } |
| sm = new TetherInterfaceSM(iface, mLooper, usb); |
| mIfaces.put(iface, sm); |
| sm.start(); |
| } |
| } |
| |
| @Override |
| public void interfaceRemoved(String iface) { |
| if (VDBG) Log.d(TAG, "interfaceRemoved " + iface); |
| synchronized (mPublicSync) { |
| TetherInterfaceSM sm = mIfaces.get(iface); |
| if (sm == null) { |
| if (VDBG) { |
| Log.e(TAG, "attempting to remove unknown iface (" + iface + "), ignoring"); |
| } |
| return; |
| } |
| sm.sendMessage(TetherInterfaceSM.CMD_INTERFACE_DOWN); |
| mIfaces.remove(iface); |
| } |
| } |
| |
| public void startTethering(int type, ResultReceiver receiver, |
| boolean showProvisioningUi) { |
| if (!isTetherProvisioningRequired()) { |
| enableTetheringInternal(type, true, receiver); |
| return; |
| } |
| |
| if (showProvisioningUi) { |
| runUiTetherProvisioningAndEnable(type, receiver); |
| } else { |
| runSilentTetherProvisioningAndEnable(type, receiver); |
| } |
| } |
| |
| public void stopTethering(int type) { |
| enableTetheringInternal(type, false, null); |
| if (isTetherProvisioningRequired()) { |
| cancelTetherProvisioningRechecks(type); |
| } |
| } |
| |
| /** |
| * Check if the device requires a provisioning check in order to enable tethering. |
| * |
| * @return a boolean - {@code true} indicating tether provisioning is required by the carrier. |
| */ |
| private boolean isTetherProvisioningRequired() { |
| String[] provisionApp = mContext.getResources().getStringArray( |
| com.android.internal.R.array.config_mobile_hotspot_provision_app); |
| if (SystemProperties.getBoolean("net.tethering.noprovisioning", false) |
| || provisionApp == null) { |
| return false; |
| } |
| |
| // Check carrier config for entitlement checks |
| final CarrierConfigManager configManager = (CarrierConfigManager) mContext |
| .getSystemService(Context.CARRIER_CONFIG_SERVICE); |
| boolean isEntitlementCheckRequired = configManager.getConfig().getBoolean( |
| CarrierConfigManager.KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL); |
| |
| if (!isEntitlementCheckRequired) { |
| return false; |
| } |
| return (provisionApp.length == 2); |
| } |
| |
| /** |
| * Enables or disables tethering for the given type. This should only be called once |
| * provisioning has succeeded or is not necessary. It will also schedule provisioning rechecks |
| * for the specified interface. |
| */ |
| private void enableTetheringInternal(int type, boolean enable, ResultReceiver receiver) { |
| boolean isProvisioningRequired = isTetherProvisioningRequired(); |
| switch (type) { |
| case ConnectivityManager.TETHERING_WIFI: |
| final WifiManager wifiManager = |
| (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE); |
| if (wifiManager.setWifiApEnabled(null, enable)) { |
| sendTetherResult(receiver, ConnectivityManager.TETHER_ERROR_NO_ERROR); |
| if (enable && isProvisioningRequired) { |
| scheduleProvisioningRechecks(type); |
| } |
| } else{ |
| sendTetherResult(receiver, ConnectivityManager.TETHER_ERROR_MASTER_ERROR); |
| } |
| break; |
| case ConnectivityManager.TETHERING_USB: |
| int result = setUsbTethering(enable); |
| if (enable && isProvisioningRequired && |
| result == ConnectivityManager.TETHER_ERROR_NO_ERROR) { |
| scheduleProvisioningRechecks(type); |
| } |
| sendTetherResult(receiver, result); |
| break; |
| case ConnectivityManager.TETHERING_BLUETOOTH: |
| setBluetoothTethering(enable, receiver); |
| break; |
| default: |
| Log.w(TAG, "Invalid tether type."); |
| sendTetherResult(receiver, ConnectivityManager.TETHER_ERROR_UNKNOWN_IFACE); |
| } |
| } |
| |
| private void sendTetherResult(ResultReceiver receiver, int result) { |
| if (receiver != null) { |
| receiver.send(result, null); |
| } |
| } |
| |
| private void setBluetoothTethering(final boolean enable, final ResultReceiver receiver) { |
| final BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); |
| if (adapter == null || !adapter.isEnabled()) { |
| Log.w(TAG, "Tried to enable bluetooth tethering with null or disabled adapter. null: " + |
| (adapter == null)); |
| sendTetherResult(receiver, ConnectivityManager.TETHER_ERROR_SERVICE_UNAVAIL); |
| return; |
| } |
| |
| adapter.getProfileProxy(mContext, new ServiceListener() { |
| @Override |
| public void onServiceDisconnected(int profile) { } |
| |
| @Override |
| public void onServiceConnected(int profile, BluetoothProfile proxy) { |
| ((BluetoothPan) proxy).setBluetoothTethering(enable); |
| // TODO: Enabling bluetooth tethering can fail asynchronously here. |
| // We should figure out a way to bubble up that failure instead of sending success. |
| int result = ((BluetoothPan) proxy).isTetheringOn() == enable ? |
| ConnectivityManager.TETHER_ERROR_NO_ERROR : |
| ConnectivityManager.TETHER_ERROR_MASTER_ERROR; |
| sendTetherResult(receiver, result); |
| if (enable && isTetherProvisioningRequired()) { |
| scheduleProvisioningRechecks(ConnectivityManager.TETHERING_BLUETOOTH); |
| } |
| adapter.closeProfileProxy(BluetoothProfile.PAN, proxy); |
| } |
| }, BluetoothProfile.PAN); |
| } |
| |
| private void runUiTetherProvisioningAndEnable(int type, ResultReceiver receiver) { |
| ResultReceiver proxyReceiver = getProxyReceiver(type, receiver); |
| sendUiTetherProvisionIntent(type, proxyReceiver); |
| } |
| |
| private void sendUiTetherProvisionIntent(int type, ResultReceiver receiver) { |
| Intent intent = new Intent(Settings.ACTION_TETHER_PROVISIONING); |
| intent.putExtra(ConnectivityManager.EXTRA_ADD_TETHER_TYPE, type); |
| intent.putExtra(ConnectivityManager.EXTRA_PROVISION_CALLBACK, receiver); |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| mContext.startActivityAsUser(intent, UserHandle.CURRENT); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| /** |
| * Creates a proxy {@link ResultReceiver} which enables tethering if the provsioning result is |
| * successful before firing back up to the wrapped receiver. |
| * |
| * @param type The type of tethering being enabled. |
| * @param receiver A ResultReceiver which will be called back with an int resultCode. |
| * @return The proxy receiver. |
| */ |
| private ResultReceiver getProxyReceiver(final int type, final ResultReceiver receiver) { |
| ResultReceiver rr = new ResultReceiver(null) { |
| @Override |
| protected void onReceiveResult(int resultCode, Bundle resultData) { |
| // If provisioning is successful, enable tethering, otherwise just send the error. |
| if (resultCode == ConnectivityManager.TETHER_ERROR_NO_ERROR) { |
| enableTetheringInternal(type, true, receiver); |
| } else { |
| sendTetherResult(receiver, resultCode); |
| } |
| } |
| }; |
| |
| // The following is necessary to avoid unmarshalling issues when sending the receiver |
| // across processes. |
| Parcel parcel = Parcel.obtain(); |
| rr.writeToParcel(parcel,0); |
| parcel.setDataPosition(0); |
| ResultReceiver receiverForSending = ResultReceiver.CREATOR.createFromParcel(parcel); |
| parcel.recycle(); |
| return receiverForSending; |
| } |
| |
| private void scheduleProvisioningRechecks(int type) { |
| Intent intent = new Intent(); |
| intent.putExtra(ConnectivityManager.EXTRA_ADD_TETHER_TYPE, type); |
| intent.putExtra(ConnectivityManager.EXTRA_SET_ALARM, true); |
| intent.setComponent(TETHER_SERVICE); |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| mContext.startServiceAsUser(intent, UserHandle.CURRENT); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private void runSilentTetherProvisioningAndEnable(int type, ResultReceiver receiver) { |
| ResultReceiver proxyReceiver = getProxyReceiver(type, receiver); |
| sendSilentTetherProvisionIntent(type, proxyReceiver); |
| } |
| |
| private void sendSilentTetherProvisionIntent(int type, ResultReceiver receiver) { |
| Intent intent = new Intent(); |
| intent.putExtra(ConnectivityManager.EXTRA_ADD_TETHER_TYPE, type); |
| intent.putExtra(ConnectivityManager.EXTRA_RUN_PROVISION, true); |
| intent.putExtra(ConnectivityManager.EXTRA_PROVISION_CALLBACK, receiver); |
| intent.setComponent(TETHER_SERVICE); |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| mContext.startServiceAsUser(intent, UserHandle.CURRENT); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| |
| private void cancelTetherProvisioningRechecks(int type) { |
| if (getConnectivityManager().isTetheringSupported()) { |
| Intent intent = new Intent(); |
| intent.putExtra(ConnectivityManager.EXTRA_REM_TETHER_TYPE, type); |
| intent.setComponent(TETHER_SERVICE); |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| mContext.startServiceAsUser(intent, UserHandle.CURRENT); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } |
| } |
| |
| public int tether(String iface) { |
| if (DBG) Log.d(TAG, "Tethering " + iface); |
| TetherInterfaceSM sm = null; |
| synchronized (mPublicSync) { |
| sm = mIfaces.get(iface); |
| } |
| if (sm == null) { |
| Log.e(TAG, "Tried to Tether an unknown iface :" + iface + ", ignoring"); |
| return ConnectivityManager.TETHER_ERROR_UNKNOWN_IFACE; |
| } |
| if (!sm.isAvailable() && !sm.isErrored()) { |
| Log.e(TAG, "Tried to Tether an unavailable iface :" + iface + ", ignoring"); |
| return ConnectivityManager.TETHER_ERROR_UNAVAIL_IFACE; |
| } |
| sm.sendMessage(TetherInterfaceSM.CMD_TETHER_REQUESTED); |
| return ConnectivityManager.TETHER_ERROR_NO_ERROR; |
| } |
| |
| public int untether(String iface) { |
| if (DBG) Log.d(TAG, "Untethering " + iface); |
| TetherInterfaceSM sm = null; |
| synchronized (mPublicSync) { |
| sm = mIfaces.get(iface); |
| } |
| if (sm == null) { |
| Log.e(TAG, "Tried to Untether an unknown iface :" + iface + ", ignoring"); |
| return ConnectivityManager.TETHER_ERROR_UNKNOWN_IFACE; |
| } |
| if (sm.isErrored()) { |
| Log.e(TAG, "Tried to Untethered an errored iface :" + iface + ", ignoring"); |
| return ConnectivityManager.TETHER_ERROR_UNAVAIL_IFACE; |
| } |
| sm.sendMessage(TetherInterfaceSM.CMD_TETHER_UNREQUESTED); |
| return ConnectivityManager.TETHER_ERROR_NO_ERROR; |
| } |
| |
| public void untetherAll() { |
| if (DBG) Log.d(TAG, "Untethering " + mIfaces); |
| for (String iface : mIfaces.keySet()) { |
| untether(iface); |
| } |
| } |
| |
| public int getLastTetherError(String iface) { |
| TetherInterfaceSM sm = null; |
| synchronized (mPublicSync) { |
| sm = mIfaces.get(iface); |
| if (sm == null) { |
| Log.e(TAG, "Tried to getLastTetherError on an unknown iface :" + iface + |
| ", ignoring"); |
| return ConnectivityManager.TETHER_ERROR_UNKNOWN_IFACE; |
| } |
| return sm.getLastError(); |
| } |
| } |
| |
| // TODO - move all private methods used only by the state machine into the state machine |
| // to clarify what needs synchronized protection. |
| private void sendTetherStateChangedBroadcast() { |
| if (!getConnectivityManager().isTetheringSupported()) return; |
| |
| ArrayList<String> availableList = new ArrayList<String>(); |
| ArrayList<String> activeList = new ArrayList<String>(); |
| ArrayList<String> erroredList = new ArrayList<String>(); |
| |
| boolean wifiTethered = false; |
| boolean usbTethered = false; |
| boolean bluetoothTethered = false; |
| |
| synchronized (mPublicSync) { |
| Set ifaces = mIfaces.keySet(); |
| for (Object iface : ifaces) { |
| TetherInterfaceSM sm = mIfaces.get(iface); |
| if (sm != null) { |
| if (sm.isErrored()) { |
| erroredList.add((String)iface); |
| } else if (sm.isAvailable()) { |
| availableList.add((String)iface); |
| } else if (sm.isTethered()) { |
| if (isUsb((String)iface)) { |
| usbTethered = true; |
| } else if (isWifi((String)iface)) { |
| wifiTethered = true; |
| } else if (isBluetooth((String)iface)) { |
| bluetoothTethered = true; |
| } |
| activeList.add((String)iface); |
| } |
| } |
| } |
| } |
| Intent broadcast = new Intent(ConnectivityManager.ACTION_TETHER_STATE_CHANGED); |
| broadcast.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING | |
| Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT); |
| broadcast.putStringArrayListExtra(ConnectivityManager.EXTRA_AVAILABLE_TETHER, |
| availableList); |
| broadcast.putStringArrayListExtra(ConnectivityManager.EXTRA_ACTIVE_TETHER, activeList); |
| broadcast.putStringArrayListExtra(ConnectivityManager.EXTRA_ERRORED_TETHER, |
| erroredList); |
| mContext.sendStickyBroadcastAsUser(broadcast, UserHandle.ALL); |
| if (DBG) { |
| Log.d(TAG, String.format( |
| "sendTetherStateChangedBroadcast avail=[%s] active=[%s] error=[%s]", |
| TextUtils.join(",", availableList), |
| TextUtils.join(",", activeList), |
| TextUtils.join(",", erroredList))); |
| } |
| |
| if (usbTethered) { |
| if (wifiTethered || bluetoothTethered) { |
| showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_general); |
| } else { |
| showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_usb); |
| } |
| } else if (wifiTethered) { |
| if (bluetoothTethered) { |
| showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_general); |
| } else { |
| /* We now have a status bar icon for WifiTethering, so drop the notification */ |
| clearTetheredNotification(); |
| } |
| } else if (bluetoothTethered) { |
| showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_bluetooth); |
| } else { |
| clearTetheredNotification(); |
| } |
| } |
| |
| private void showTetheredNotification(int icon) { |
| NotificationManager notificationManager = |
| (NotificationManager)mContext.getSystemService(Context.NOTIFICATION_SERVICE); |
| if (notificationManager == null) { |
| return; |
| } |
| |
| if (mLastNotificationId != 0) { |
| if (mLastNotificationId == icon) { |
| return; |
| } |
| notificationManager.cancelAsUser(null, mLastNotificationId, |
| UserHandle.ALL); |
| mLastNotificationId = 0; |
| } |
| |
| Intent intent = new Intent(); |
| intent.setClassName("com.android.settings", "com.android.settings.TetherSettings"); |
| intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY); |
| |
| PendingIntent pi = PendingIntent.getActivityAsUser(mContext, 0, intent, 0, |
| null, UserHandle.CURRENT); |
| |
| Resources r = Resources.getSystem(); |
| CharSequence title = r.getText(com.android.internal.R.string.tethered_notification_title); |
| CharSequence message = r.getText(com.android.internal.R.string. |
| tethered_notification_message); |
| |
| if (mTetheredNotificationBuilder == null) { |
| mTetheredNotificationBuilder = new Notification.Builder(mContext); |
| mTetheredNotificationBuilder.setWhen(0) |
| .setOngoing(true) |
| .setColor(mContext.getColor( |
| com.android.internal.R.color.system_notification_accent_color)) |
| .setVisibility(Notification.VISIBILITY_PUBLIC) |
| .setCategory(Notification.CATEGORY_STATUS); |
| } |
| mTetheredNotificationBuilder.setSmallIcon(icon) |
| .setContentTitle(title) |
| .setContentText(message) |
| .setContentIntent(pi); |
| mLastNotificationId = icon; |
| |
| notificationManager.notifyAsUser(null, mLastNotificationId, |
| mTetheredNotificationBuilder.build(), UserHandle.ALL); |
| } |
| |
| private void clearTetheredNotification() { |
| NotificationManager notificationManager = |
| (NotificationManager)mContext.getSystemService(Context.NOTIFICATION_SERVICE); |
| if (notificationManager != null && mLastNotificationId != 0) { |
| notificationManager.cancelAsUser(null, mLastNotificationId, |
| UserHandle.ALL); |
| mLastNotificationId = 0; |
| } |
| } |
| |
| private class StateReceiver extends BroadcastReceiver { |
| @Override |
| public void onReceive(Context content, Intent intent) { |
| String action = intent.getAction(); |
| if (action == null) { return; } |
| if (action.equals(UsbManager.ACTION_USB_STATE)) { |
| synchronized (Tethering.this.mPublicSync) { |
| boolean usbConnected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false); |
| mRndisEnabled = intent.getBooleanExtra(UsbManager.USB_FUNCTION_RNDIS, false); |
| // start tethering if we have a request pending |
| if (usbConnected && mRndisEnabled && mUsbTetherRequested) { |
| tetherUsb(true); |
| } |
| mUsbTetherRequested = false; |
| } |
| } else if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) { |
| NetworkInfo networkInfo = (NetworkInfo)intent.getParcelableExtra( |
| ConnectivityManager.EXTRA_NETWORK_INFO); |
| if (networkInfo != null && |
| networkInfo.getDetailedState() != NetworkInfo.DetailedState.FAILED) { |
| if (VDBG) Log.d(TAG, "Tethering got CONNECTIVITY_ACTION"); |
| mTetherMasterSM.sendMessage(TetherMasterSM.CMD_UPSTREAM_CHANGED); |
| } |
| } else if (action.equals(Intent.ACTION_CONFIGURATION_CHANGED)) { |
| updateConfiguration(); |
| } |
| } |
| } |
| |
| private void tetherUsb(boolean enable) { |
| if (VDBG) Log.d(TAG, "tetherUsb " + enable); |
| |
| String[] ifaces = new String[0]; |
| try { |
| ifaces = mNMService.listInterfaces(); |
| } catch (Exception e) { |
| Log.e(TAG, "Error listing Interfaces", e); |
| return; |
| } |
| for (String iface : ifaces) { |
| if (isUsb(iface)) { |
| int result = (enable ? tether(iface) : untether(iface)); |
| if (result == ConnectivityManager.TETHER_ERROR_NO_ERROR) { |
| return; |
| } |
| } |
| } |
| Log.e(TAG, "unable start or stop USB tethering"); |
| } |
| |
| // configured when we start tethering and unconfig'd on error or conclusion |
| private boolean configureUsbIface(boolean enabled) { |
| if (VDBG) Log.d(TAG, "configureUsbIface(" + enabled + ")"); |
| |
| // toggle the USB interfaces |
| String[] ifaces = new String[0]; |
| try { |
| ifaces = mNMService.listInterfaces(); |
| } catch (Exception e) { |
| Log.e(TAG, "Error listing Interfaces", e); |
| return false; |
| } |
| for (String iface : ifaces) { |
| if (isUsb(iface)) { |
| InterfaceConfiguration ifcg = null; |
| try { |
| ifcg = mNMService.getInterfaceConfig(iface); |
| if (ifcg != null) { |
| InetAddress addr = NetworkUtils.numericToInetAddress(USB_NEAR_IFACE_ADDR); |
| ifcg.setLinkAddress(new LinkAddress(addr, USB_PREFIX_LENGTH)); |
| if (enabled) { |
| ifcg.setInterfaceUp(); |
| } else { |
| ifcg.setInterfaceDown(); |
| } |
| ifcg.clearFlag("running"); |
| mNMService.setInterfaceConfig(iface, ifcg); |
| } |
| } catch (Exception e) { |
| Log.e(TAG, "Error configuring interface " + iface, e); |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| // TODO - return copies so people can't tamper |
| public String[] getTetherableUsbRegexs() { |
| return mTetherableUsbRegexs; |
| } |
| |
| public String[] getTetherableWifiRegexs() { |
| return mTetherableWifiRegexs; |
| } |
| |
| public String[] getTetherableBluetoothRegexs() { |
| return mTetherableBluetoothRegexs; |
| } |
| |
| public int setUsbTethering(boolean enable) { |
| if (VDBG) Log.d(TAG, "setUsbTethering(" + enable + ")"); |
| UsbManager usbManager = (UsbManager)mContext.getSystemService(Context.USB_SERVICE); |
| |
| synchronized (mPublicSync) { |
| if (enable) { |
| if (mRndisEnabled) { |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| tetherUsb(true); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| } else { |
| mUsbTetherRequested = true; |
| usbManager.setCurrentFunction(UsbManager.USB_FUNCTION_RNDIS); |
| } |
| } else { |
| final long ident = Binder.clearCallingIdentity(); |
| try { |
| tetherUsb(false); |
| } finally { |
| Binder.restoreCallingIdentity(ident); |
| } |
| if (mRndisEnabled) { |
| usbManager.setCurrentFunction(null); |
| } |
| mUsbTetherRequested = false; |
| } |
| } |
| return ConnectivityManager.TETHER_ERROR_NO_ERROR; |
| } |
| |
| public int[] getUpstreamIfaceTypes() { |
| int values[]; |
| synchronized (mPublicSync) { |
| updateConfiguration(); // TODO - remove? |
| values = new int[mUpstreamIfaceTypes.size()]; |
| Iterator<Integer> iterator = mUpstreamIfaceTypes.iterator(); |
| for (int i=0; i < mUpstreamIfaceTypes.size(); i++) { |
| values[i] = iterator.next(); |
| } |
| } |
| return values; |
| } |
| |
| private void checkDunRequired() { |
| int secureSetting = 2; |
| TelephonyManager tm = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); |
| if (tm != null) { |
| secureSetting = tm.getTetherApnRequired(); |
| } |
| synchronized (mPublicSync) { |
| // 2 = not set, 0 = DUN not required, 1 = DUN required |
| if (secureSetting != 2) { |
| int requiredApn = (secureSetting == 1 ? |
| ConnectivityManager.TYPE_MOBILE_DUN : |
| ConnectivityManager.TYPE_MOBILE_HIPRI); |
| if (requiredApn == ConnectivityManager.TYPE_MOBILE_DUN) { |
| while (mUpstreamIfaceTypes.contains(MOBILE_TYPE)) { |
| mUpstreamIfaceTypes.remove(MOBILE_TYPE); |
| } |
| while (mUpstreamIfaceTypes.contains(HIPRI_TYPE)) { |
| mUpstreamIfaceTypes.remove(HIPRI_TYPE); |
| } |
| if (mUpstreamIfaceTypes.contains(DUN_TYPE) == false) { |
| mUpstreamIfaceTypes.add(DUN_TYPE); |
| } |
| } else { |
| while (mUpstreamIfaceTypes.contains(DUN_TYPE)) { |
| mUpstreamIfaceTypes.remove(DUN_TYPE); |
| } |
| if (mUpstreamIfaceTypes.contains(MOBILE_TYPE) == false) { |
| mUpstreamIfaceTypes.add(MOBILE_TYPE); |
| } |
| if (mUpstreamIfaceTypes.contains(HIPRI_TYPE) == false) { |
| mUpstreamIfaceTypes.add(HIPRI_TYPE); |
| } |
| } |
| } |
| if (mUpstreamIfaceTypes.contains(DUN_TYPE)) { |
| mPreferredUpstreamMobileApn = ConnectivityManager.TYPE_MOBILE_DUN; |
| } else { |
| mPreferredUpstreamMobileApn = ConnectivityManager.TYPE_MOBILE_HIPRI; |
| } |
| } |
| } |
| |
| // TODO review API - maybe return ArrayList<String> here and below? |
| public String[] getTetheredIfaces() { |
| ArrayList<String> list = new ArrayList<String>(); |
| synchronized (mPublicSync) { |
| Set keys = mIfaces.keySet(); |
| for (Object key : keys) { |
| TetherInterfaceSM sm = mIfaces.get(key); |
| if (sm.isTethered()) { |
| list.add((String)key); |
| } |
| } |
| } |
| String[] retVal = new String[list.size()]; |
| for (int i=0; i < list.size(); i++) { |
| retVal[i] = list.get(i); |
| } |
| return retVal; |
| } |
| |
| public String[] getTetherableIfaces() { |
| ArrayList<String> list = new ArrayList<String>(); |
| synchronized (mPublicSync) { |
| Set keys = mIfaces.keySet(); |
| for (Object key : keys) { |
| TetherInterfaceSM sm = mIfaces.get(key); |
| if (sm.isAvailable()) { |
| list.add((String)key); |
| } |
| } |
| } |
| String[] retVal = new String[list.size()]; |
| for (int i=0; i < list.size(); i++) { |
| retVal[i] = list.get(i); |
| } |
| return retVal; |
| } |
| |
| public String[] getTetheredDhcpRanges() { |
| return mDhcpRange; |
| } |
| |
| public String[] getErroredIfaces() { |
| ArrayList<String> list = new ArrayList<String>(); |
| synchronized (mPublicSync) { |
| Set keys = mIfaces.keySet(); |
| for (Object key : keys) { |
| TetherInterfaceSM sm = mIfaces.get(key); |
| if (sm.isErrored()) { |
| list.add((String)key); |
| } |
| } |
| } |
| String[] retVal = new String[list.size()]; |
| for (int i= 0; i< list.size(); i++) { |
| retVal[i] = list.get(i); |
| } |
| return retVal; |
| } |
| |
| private void maybeLogMessage(State state, int what) { |
| if (DBG) { |
| Log.d(TAG, state.getName() + " got " + |
| sMagicDecoderRing.get(what, Integer.toString(what))); |
| } |
| } |
| |
| class TetherInterfaceSM extends StateMachine { |
| private static final int BASE_IFACE = Protocol.BASE_TETHERING + 100; |
| // notification from the master SM that it's not in tether mode |
| static final int CMD_TETHER_MODE_DEAD = BASE_IFACE + 1; |
| // request from the user that it wants to tether |
| static final int CMD_TETHER_REQUESTED = BASE_IFACE + 2; |
| // request from the user that it wants to untether |
| static final int CMD_TETHER_UNREQUESTED = BASE_IFACE + 3; |
| // notification that this interface is down |
| static final int CMD_INTERFACE_DOWN = BASE_IFACE + 4; |
| // notification that this interface is up |
| static final int CMD_INTERFACE_UP = BASE_IFACE + 5; |
| // notification from the master SM that it had an error turning on cellular dun |
| static final int CMD_CELL_DUN_ERROR = BASE_IFACE + 6; |
| // notification from the master SM that it had trouble enabling IP Forwarding |
| static final int CMD_IP_FORWARDING_ENABLE_ERROR = BASE_IFACE + 7; |
| // notification from the master SM that it had trouble disabling IP Forwarding |
| static final int CMD_IP_FORWARDING_DISABLE_ERROR = BASE_IFACE + 8; |
| // notification from the master SM that it had trouble starting tethering |
| static final int CMD_START_TETHERING_ERROR = BASE_IFACE + 9; |
| // notification from the master SM that it had trouble stopping tethering |
| static final int CMD_STOP_TETHERING_ERROR = BASE_IFACE + 10; |
| // notification from the master SM that it had trouble setting the DNS forwarders |
| static final int CMD_SET_DNS_FORWARDERS_ERROR = BASE_IFACE + 11; |
| // the upstream connection has changed |
| static final int CMD_TETHER_CONNECTION_CHANGED = BASE_IFACE + 12; |
| |
| private State mDefaultState; |
| |
| private State mInitialState; |
| private State mStartingState; |
| private State mTetheredState; |
| |
| private State mUnavailableState; |
| |
| private boolean mAvailable; |
| private boolean mTethered; |
| int mLastError; |
| |
| String mIfaceName; |
| String mMyUpstreamIfaceName; // may change over time |
| |
| boolean mUsb; |
| |
| TetherInterfaceSM(String name, Looper looper, boolean usb) { |
| super(name, looper); |
| mIfaceName = name; |
| mUsb = usb; |
| setLastError(ConnectivityManager.TETHER_ERROR_NO_ERROR); |
| |
| mInitialState = new InitialState(); |
| addState(mInitialState); |
| mStartingState = new StartingState(); |
| addState(mStartingState); |
| mTetheredState = new TetheredState(); |
| addState(mTetheredState); |
| mUnavailableState = new UnavailableState(); |
| addState(mUnavailableState); |
| |
| setInitialState(mInitialState); |
| } |
| |
| public String toString() { |
| String res = new String(); |
| res += mIfaceName + " - "; |
| IState current = getCurrentState(); |
| if (current == mInitialState) res += "InitialState"; |
| if (current == mStartingState) res += "StartingState"; |
| if (current == mTetheredState) res += "TetheredState"; |
| if (current == mUnavailableState) res += "UnavailableState"; |
| if (mAvailable) res += " - Available"; |
| if (mTethered) res += " - Tethered"; |
| res += " - lastError =" + mLastError; |
| return res; |
| } |
| |
| public int getLastError() { |
| synchronized (Tethering.this.mPublicSync) { |
| return mLastError; |
| } |
| } |
| |
| private void setLastError(int error) { |
| synchronized (Tethering.this.mPublicSync) { |
| mLastError = error; |
| |
| if (isErrored()) { |
| if (mUsb) { |
| // note everything's been unwound by this point so nothing to do on |
| // further error.. |
| Tethering.this.configureUsbIface(false); |
| } |
| } |
| } |
| } |
| |
| public boolean isAvailable() { |
| synchronized (Tethering.this.mPublicSync) { |
| return mAvailable; |
| } |
| } |
| |
| private void setAvailable(boolean available) { |
| synchronized (Tethering.this.mPublicSync) { |
| mAvailable = available; |
| } |
| } |
| |
| public boolean isTethered() { |
| synchronized (Tethering.this.mPublicSync) { |
| return mTethered; |
| } |
| } |
| |
| private void setTethered(boolean tethered) { |
| synchronized (Tethering.this.mPublicSync) { |
| mTethered = tethered; |
| } |
| } |
| |
| public boolean isErrored() { |
| synchronized (Tethering.this.mPublicSync) { |
| return (mLastError != ConnectivityManager.TETHER_ERROR_NO_ERROR); |
| } |
| } |
| |
| class InitialState extends State { |
| @Override |
| public void enter() { |
| setAvailable(true); |
| setTethered(false); |
| sendTetherStateChangedBroadcast(); |
| } |
| |
| @Override |
| public boolean processMessage(Message message) { |
| maybeLogMessage(this, message.what); |
| boolean retValue = true; |
| switch (message.what) { |
| case CMD_TETHER_REQUESTED: |
| setLastError(ConnectivityManager.TETHER_ERROR_NO_ERROR); |
| mTetherMasterSM.sendMessage(TetherMasterSM.CMD_TETHER_MODE_REQUESTED, |
| TetherInterfaceSM.this); |
| transitionTo(mStartingState); |
| break; |
| case CMD_INTERFACE_DOWN: |
| transitionTo(mUnavailableState); |
| break; |
| default: |
| retValue = false; |
| break; |
| } |
| return retValue; |
| } |
| } |
| |
| class StartingState extends State { |
| @Override |
| public void enter() { |
| setAvailable(false); |
| if (mUsb) { |
| if (!Tethering.this.configureUsbIface(true)) { |
| mTetherMasterSM.sendMessage(TetherMasterSM.CMD_TETHER_MODE_UNREQUESTED, |
| TetherInterfaceSM.this); |
| setLastError(ConnectivityManager.TETHER_ERROR_IFACE_CFG_ERROR); |
| |
| transitionTo(mInitialState); |
| return; |
| } |
| } |
| sendTetherStateChangedBroadcast(); |
| |
| // Skipping StartingState |
| transitionTo(mTetheredState); |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| maybeLogMessage(this, message.what); |
| boolean retValue = true; |
| switch (message.what) { |
| // maybe a parent class? |
| case CMD_TETHER_UNREQUESTED: |
| mTetherMasterSM.sendMessage(TetherMasterSM.CMD_TETHER_MODE_UNREQUESTED, |
| TetherInterfaceSM.this); |
| if (mUsb) { |
| if (!Tethering.this.configureUsbIface(false)) { |
| setLastErrorAndTransitionToInitialState( |
| ConnectivityManager.TETHER_ERROR_IFACE_CFG_ERROR); |
| break; |
| } |
| } |
| transitionTo(mInitialState); |
| break; |
| case CMD_CELL_DUN_ERROR: |
| case CMD_IP_FORWARDING_ENABLE_ERROR: |
| case CMD_IP_FORWARDING_DISABLE_ERROR: |
| case CMD_START_TETHERING_ERROR: |
| case CMD_STOP_TETHERING_ERROR: |
| case CMD_SET_DNS_FORWARDERS_ERROR: |
| setLastErrorAndTransitionToInitialState( |
| ConnectivityManager.TETHER_ERROR_MASTER_ERROR); |
| break; |
| case CMD_INTERFACE_DOWN: |
| mTetherMasterSM.sendMessage(TetherMasterSM.CMD_TETHER_MODE_UNREQUESTED, |
| TetherInterfaceSM.this); |
| transitionTo(mUnavailableState); |
| break; |
| default: |
| retValue = false; |
| } |
| return retValue; |
| } |
| } |
| |
| class TetheredState extends State { |
| @Override |
| public void enter() { |
| try { |
| mNMService.tetherInterface(mIfaceName); |
| } catch (Exception e) { |
| Log.e(TAG, "Error Tethering: " + e.toString()); |
| setLastError(ConnectivityManager.TETHER_ERROR_TETHER_IFACE_ERROR); |
| |
| try { |
| mNMService.untetherInterface(mIfaceName); |
| } catch (Exception ee) { |
| Log.e(TAG, "Error untethering after failure!" + ee.toString()); |
| } |
| transitionTo(mInitialState); |
| return; |
| } |
| if (DBG) Log.d(TAG, "Tethered " + mIfaceName); |
| setAvailable(false); |
| setTethered(true); |
| sendTetherStateChangedBroadcast(); |
| } |
| |
| private void cleanupUpstream() { |
| if (mMyUpstreamIfaceName != null) { |
| // note that we don't care about errors here. |
| // sometimes interfaces are gone before we get |
| // to remove their rules, which generates errors. |
| // just do the best we can. |
| try { |
| // about to tear down NAT; gather remaining statistics |
| mStatsService.forceUpdate(); |
| } catch (Exception e) { |
| if (VDBG) Log.e(TAG, "Exception in forceUpdate: " + e.toString()); |
| } |
| try { |
| mNMService.stopInterfaceForwarding(mIfaceName, mMyUpstreamIfaceName); |
| } catch (Exception e) { |
| if (VDBG) Log.e( |
| TAG, "Exception in removeInterfaceForward: " + e.toString()); |
| } |
| try { |
| mNMService.disableNat(mIfaceName, mMyUpstreamIfaceName); |
| } catch (Exception e) { |
| if (VDBG) Log.e(TAG, "Exception in disableNat: " + e.toString()); |
| } |
| mMyUpstreamIfaceName = null; |
| } |
| return; |
| } |
| |
| @Override |
| public boolean processMessage(Message message) { |
| maybeLogMessage(this, message.what); |
| boolean retValue = true; |
| boolean error = false; |
| switch (message.what) { |
| case CMD_TETHER_UNREQUESTED: |
| case CMD_INTERFACE_DOWN: |
| cleanupUpstream(); |
| try { |
| mNMService.untetherInterface(mIfaceName); |
| } catch (Exception e) { |
| setLastErrorAndTransitionToInitialState( |
| ConnectivityManager.TETHER_ERROR_UNTETHER_IFACE_ERROR); |
| break; |
| } |
| mTetherMasterSM.sendMessage(TetherMasterSM.CMD_TETHER_MODE_UNREQUESTED, |
| TetherInterfaceSM.this); |
| if (message.what == CMD_TETHER_UNREQUESTED) { |
| if (mUsb) { |
| if (!Tethering.this.configureUsbIface(false)) { |
| setLastError( |
| ConnectivityManager.TETHER_ERROR_IFACE_CFG_ERROR); |
| } |
| } |
| transitionTo(mInitialState); |
| } else if (message.what == CMD_INTERFACE_DOWN) { |
| transitionTo(mUnavailableState); |
| } |
| if (DBG) Log.d(TAG, "Untethered " + mIfaceName); |
| break; |
| case CMD_TETHER_CONNECTION_CHANGED: |
| String newUpstreamIfaceName = (String)(message.obj); |
| if ((mMyUpstreamIfaceName == null && newUpstreamIfaceName == null) || |
| (mMyUpstreamIfaceName != null && |
| mMyUpstreamIfaceName.equals(newUpstreamIfaceName))) { |
| if (VDBG) Log.d(TAG, "Connection changed noop - dropping"); |
| break; |
| } |
| cleanupUpstream(); |
| if (newUpstreamIfaceName != null) { |
| try { |
| mNMService.enableNat(mIfaceName, newUpstreamIfaceName); |
| mNMService.startInterfaceForwarding(mIfaceName, |
| newUpstreamIfaceName); |
| } catch (Exception e) { |
| Log.e(TAG, "Exception enabling Nat: " + e.toString()); |
| try { |
| mNMService.disableNat(mIfaceName, newUpstreamIfaceName); |
| } catch (Exception ee) {} |
| try { |
| mNMService.untetherInterface(mIfaceName); |
| } catch (Exception ee) {} |
| |
| setLastError(ConnectivityManager.TETHER_ERROR_ENABLE_NAT_ERROR); |
| transitionTo(mInitialState); |
| return true; |
| } |
| } |
| mMyUpstreamIfaceName = newUpstreamIfaceName; |
| break; |
| case CMD_CELL_DUN_ERROR: |
| case CMD_IP_FORWARDING_ENABLE_ERROR: |
| case CMD_IP_FORWARDING_DISABLE_ERROR: |
| case CMD_START_TETHERING_ERROR: |
| case CMD_STOP_TETHERING_ERROR: |
| case CMD_SET_DNS_FORWARDERS_ERROR: |
| error = true; |
| // fall through |
| case CMD_TETHER_MODE_DEAD: |
| cleanupUpstream(); |
| try { |
| mNMService.untetherInterface(mIfaceName); |
| } catch (Exception e) { |
| setLastErrorAndTransitionToInitialState( |
| ConnectivityManager.TETHER_ERROR_UNTETHER_IFACE_ERROR); |
| break; |
| } |
| if (error) { |
| setLastErrorAndTransitionToInitialState( |
| ConnectivityManager.TETHER_ERROR_MASTER_ERROR); |
| break; |
| } |
| if (DBG) Log.d(TAG, "Tether lost upstream connection " + mIfaceName); |
| sendTetherStateChangedBroadcast(); |
| if (mUsb) { |
| if (!Tethering.this.configureUsbIface(false)) { |
| setLastError(ConnectivityManager.TETHER_ERROR_IFACE_CFG_ERROR); |
| } |
| } |
| transitionTo(mInitialState); |
| break; |
| default: |
| retValue = false; |
| break; |
| } |
| return retValue; |
| } |
| } |
| |
| class UnavailableState extends State { |
| @Override |
| public void enter() { |
| setAvailable(false); |
| setLastError(ConnectivityManager.TETHER_ERROR_NO_ERROR); |
| setTethered(false); |
| sendTetherStateChangedBroadcast(); |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| boolean retValue = true; |
| switch (message.what) { |
| case CMD_INTERFACE_UP: |
| transitionTo(mInitialState); |
| break; |
| default: |
| retValue = false; |
| break; |
| } |
| return retValue; |
| } |
| } |
| |
| void setLastErrorAndTransitionToInitialState(int error) { |
| setLastError(error); |
| transitionTo(mInitialState); |
| } |
| |
| } |
| |
| /** |
| * A NetworkCallback class that relays information of interest to the |
| * tethering master state machine thread for subsequent processing. |
| */ |
| class UpstreamNetworkCallback extends NetworkCallback { |
| @Override |
| public void onLinkPropertiesChanged(Network network, LinkProperties newLp) { |
| mTetherMasterSM.sendMessage( |
| TetherMasterSM.EVENT_UPSTREAM_LINKPROPERTIES_CHANGED, |
| new NetworkState(null, newLp, null, network, null, null)); |
| } |
| |
| @Override |
| public void onLost(Network network) { |
| mTetherMasterSM.sendMessage(TetherMasterSM.EVENT_UPSTREAM_LOST, network); |
| } |
| } |
| |
| /** |
| * A class to centralize all the network and link properties information |
| * pertaining to the current and any potential upstream network. |
| * |
| * Calling #start() registers two callbacks: one to track the system default |
| * network and a second to specifically observe TYPE_MOBILE_DUN networks. |
| * |
| * The methods and data members of this class are only to be accessed and |
| * modified from the tethering master state machine thread. Any other |
| * access semantics would necessitate the addition of locking. |
| * |
| * TODO: Investigate whether more "upstream-specific" logic/functionality |
| * could/should be moved here. |
| */ |
| class UpstreamNetworkMonitor { |
| final HashMap<Network, NetworkState> mNetworkMap = new HashMap(); |
| NetworkCallback mDefaultNetworkCallback; |
| NetworkCallback mDunTetheringCallback; |
| |
| void start() { |
| stop(); |
| |
| mDefaultNetworkCallback = new UpstreamNetworkCallback(); |
| getConnectivityManager().registerDefaultNetworkCallback(mDefaultNetworkCallback); |
| |
| final NetworkRequest dunTetheringRequest = new NetworkRequest.Builder() |
| .addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR) |
| .removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) |
| .addCapability(NetworkCapabilities.NET_CAPABILITY_DUN) |
| .build(); |
| mDunTetheringCallback = new UpstreamNetworkCallback(); |
| getConnectivityManager().registerNetworkCallback( |
| dunTetheringRequest, mDunTetheringCallback); |
| } |
| |
| void stop() { |
| if (mDefaultNetworkCallback != null) { |
| getConnectivityManager().unregisterNetworkCallback(mDefaultNetworkCallback); |
| mDefaultNetworkCallback = null; |
| } |
| |
| if (mDunTetheringCallback != null) { |
| getConnectivityManager().unregisterNetworkCallback(mDunTetheringCallback); |
| mDunTetheringCallback = null; |
| } |
| |
| mNetworkMap.clear(); |
| } |
| |
| // Returns true if these updated LinkProperties pertain to the current |
| // upstream network interface, false otherwise (or if there is not |
| // currently any upstream tethering interface). |
| boolean processLinkPropertiesChanged(NetworkState networkState) { |
| if (networkState == null || |
| networkState.network == null || |
| networkState.linkProperties == null) { |
| return false; |
| } |
| |
| mNetworkMap.put(networkState.network, networkState); |
| |
| if (mCurrentUpstreamIface != null) { |
| for (String ifname : networkState.linkProperties.getAllInterfaceNames()) { |
| if (mCurrentUpstreamIface.equals(ifname)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| void processNetworkLost(Network network) { |
| if (network != null) { |
| mNetworkMap.remove(network); |
| } |
| } |
| } |
| |
| class TetherMasterSM extends StateMachine { |
| private static final int BASE_MASTER = Protocol.BASE_TETHERING; |
| // an interface SM has requested Tethering |
| static final int CMD_TETHER_MODE_REQUESTED = BASE_MASTER + 1; |
| // an interface SM has unrequested Tethering |
| static final int CMD_TETHER_MODE_UNREQUESTED = BASE_MASTER + 2; |
| // upstream connection change - do the right thing |
| static final int CMD_UPSTREAM_CHANGED = BASE_MASTER + 3; |
| // we don't have a valid upstream conn, check again after a delay |
| static final int CMD_RETRY_UPSTREAM = BASE_MASTER + 4; |
| // Events from NetworkCallbacks that we process on the master state |
| // machine thread on behalf of the UpstreamNetworkMonitor. |
| static final int EVENT_UPSTREAM_LINKPROPERTIES_CHANGED = BASE_MASTER + 5; |
| static final int EVENT_UPSTREAM_LOST = BASE_MASTER + 6; |
| |
| // This indicates what a timeout event relates to. A state that |
| // sends itself a delayed timeout event and handles incoming timeout events |
| // should inc this when it is entered and whenever it sends a new timeout event. |
| // We do not flush the old ones. |
| private int mSequenceNumber; |
| |
| private State mInitialState; |
| private State mTetherModeAliveState; |
| |
| private State mSetIpForwardingEnabledErrorState; |
| private State mSetIpForwardingDisabledErrorState; |
| private State mStartTetheringErrorState; |
| private State mStopTetheringErrorState; |
| private State mSetDnsForwardersErrorState; |
| |
| private ArrayList<TetherInterfaceSM> mNotifyList; |
| |
| private int mMobileApnReserved = ConnectivityManager.TYPE_NONE; |
| private NetworkCallback mMobileUpstreamCallback; |
| |
| private static final int UPSTREAM_SETTLE_TIME_MS = 10000; |
| |
| TetherMasterSM(String name, Looper looper) { |
| super(name, looper); |
| |
| //Add states |
| mInitialState = new InitialState(); |
| addState(mInitialState); |
| mTetherModeAliveState = new TetherModeAliveState(); |
| addState(mTetherModeAliveState); |
| |
| mSetIpForwardingEnabledErrorState = new SetIpForwardingEnabledErrorState(); |
| addState(mSetIpForwardingEnabledErrorState); |
| mSetIpForwardingDisabledErrorState = new SetIpForwardingDisabledErrorState(); |
| addState(mSetIpForwardingDisabledErrorState); |
| mStartTetheringErrorState = new StartTetheringErrorState(); |
| addState(mStartTetheringErrorState); |
| mStopTetheringErrorState = new StopTetheringErrorState(); |
| addState(mStopTetheringErrorState); |
| mSetDnsForwardersErrorState = new SetDnsForwardersErrorState(); |
| addState(mSetDnsForwardersErrorState); |
| |
| mNotifyList = new ArrayList<TetherInterfaceSM>(); |
| setInitialState(mInitialState); |
| } |
| |
| class TetherMasterUtilState extends State { |
| @Override |
| public boolean processMessage(Message m) { |
| return false; |
| } |
| |
| protected boolean turnOnUpstreamMobileConnection(int apnType) { |
| if (apnType == ConnectivityManager.TYPE_NONE) { return false; } |
| |
| if (apnType != mMobileApnReserved) { |
| // Unregister any previous mobile upstream callback because |
| // this request, if any, will be different. |
| turnOffUpstreamMobileConnection(); |
| } |
| |
| if (mMobileUpstreamCallback != null) { |
| // Looks like we already filed a request for this apnType. |
| return true; |
| } |
| |
| switch (apnType) { |
| case ConnectivityManager.TYPE_MOBILE_DUN: |
| case ConnectivityManager.TYPE_MOBILE: |
| case ConnectivityManager.TYPE_MOBILE_HIPRI: |
| mMobileApnReserved = apnType; |
| break; |
| default: |
| return false; |
| } |
| |
| final NetworkRequest.Builder builder = new NetworkRequest.Builder() |
| .addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR); |
| if (apnType == ConnectivityManager.TYPE_MOBILE_DUN) { |
| builder.removeCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED) |
| .addCapability(NetworkCapabilities.NET_CAPABILITY_DUN); |
| } else { |
| builder.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); |
| } |
| final NetworkRequest mobileUpstreamRequest = builder.build(); |
| |
| // The UpstreamNetworkMonitor's callback will be notified. |
| // Therefore, to avoid duplicate notifications, we only register a no-op. |
| mMobileUpstreamCallback = new NetworkCallback(); |
| |
| // TODO: Change the timeout from 0 (no onUnavailable callback) to use some |
| // moderate callback time (once timeout callbacks are implemented). This might |
| // be useful for updating some UI. Additionally, we should definitely log a |
| // message to aid in any subsequent debugging |
| if (DBG) Log.d(TAG, "requesting mobile upstream network: " + mobileUpstreamRequest); |
| getConnectivityManager().requestNetwork( |
| mobileUpstreamRequest, mMobileUpstreamCallback, 0, apnType); |
| return true; |
| } |
| |
| protected void turnOffUpstreamMobileConnection() { |
| if (mMobileUpstreamCallback != null) { |
| getConnectivityManager().unregisterNetworkCallback(mMobileUpstreamCallback); |
| mMobileUpstreamCallback = null; |
| } |
| mMobileApnReserved = ConnectivityManager.TYPE_NONE; |
| } |
| |
| protected boolean turnOnMasterTetherSettings() { |
| try { |
| mNMService.setIpForwardingEnabled(true); |
| } catch (Exception e) { |
| transitionTo(mSetIpForwardingEnabledErrorState); |
| return false; |
| } |
| try { |
| mNMService.startTethering(mDhcpRange); |
| } catch (Exception e) { |
| try { |
| mNMService.stopTethering(); |
| mNMService.startTethering(mDhcpRange); |
| } catch (Exception ee) { |
| transitionTo(mStartTetheringErrorState); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| protected boolean turnOffMasterTetherSettings() { |
| try { |
| mNMService.stopTethering(); |
| } catch (Exception e) { |
| transitionTo(mStopTetheringErrorState); |
| return false; |
| } |
| try { |
| mNMService.setIpForwardingEnabled(false); |
| } catch (Exception e) { |
| transitionTo(mSetIpForwardingDisabledErrorState); |
| return false; |
| } |
| transitionTo(mInitialState); |
| return true; |
| } |
| |
| protected void chooseUpstreamType(boolean tryCell) { |
| int upType = ConnectivityManager.TYPE_NONE; |
| String iface = null; |
| |
| updateConfiguration(); // TODO - remove? |
| |
| synchronized (mPublicSync) { |
| if (VDBG) { |
| Log.d(TAG, "chooseUpstreamType has upstream iface types:"); |
| for (Integer netType : mUpstreamIfaceTypes) { |
| Log.d(TAG, " " + netType); |
| } |
| } |
| |
| for (Integer netType : mUpstreamIfaceTypes) { |
| NetworkInfo info = |
| getConnectivityManager().getNetworkInfo(netType.intValue()); |
| if ((info != null) && info.isConnected()) { |
| upType = netType.intValue(); |
| break; |
| } |
| } |
| } |
| |
| if (DBG) { |
| Log.d(TAG, "chooseUpstreamType(" + tryCell + ")," |
| + " preferredApn=" |
| + ConnectivityManager.getNetworkTypeName(mPreferredUpstreamMobileApn) |
| + ", got type=" |
| + ConnectivityManager.getNetworkTypeName(upType)); |
| } |
| |
| switch (upType) { |
| case ConnectivityManager.TYPE_MOBILE_DUN: |
| case ConnectivityManager.TYPE_MOBILE_HIPRI: |
| // If we're on DUN, put our own grab on it. |
| turnOnUpstreamMobileConnection(upType); |
| break; |
| case ConnectivityManager.TYPE_NONE: |
| if (tryCell && |
| turnOnUpstreamMobileConnection(mPreferredUpstreamMobileApn)) { |
| // We think mobile should be coming up; don't set a retry. |
| } else { |
| sendMessageDelayed(CMD_RETRY_UPSTREAM, UPSTREAM_SETTLE_TIME_MS); |
| } |
| break; |
| default: |
| /* If we've found an active upstream connection that's not DUN/HIPRI |
| * we should stop any outstanding DUN/HIPRI start requests. |
| * |
| * If we found NONE we don't want to do this as we want any previous |
| * requests to keep trying to bring up something we can use. |
| */ |
| turnOffUpstreamMobileConnection(); |
| break; |
| } |
| |
| if (upType != ConnectivityManager.TYPE_NONE) { |
| LinkProperties linkProperties = |
| getConnectivityManager().getLinkProperties(upType); |
| if (linkProperties != null) { |
| // Find the interface with the default IPv4 route. It may be the |
| // interface described by linkProperties, or one of the interfaces |
| // stacked on top of it. |
| Log.i(TAG, "Finding IPv4 upstream interface on: " + linkProperties); |
| RouteInfo ipv4Default = RouteInfo.selectBestRoute( |
| linkProperties.getAllRoutes(), Inet4Address.ANY); |
| if (ipv4Default != null) { |
| iface = ipv4Default.getInterface(); |
| Log.i(TAG, "Found interface " + ipv4Default.getInterface()); |
| } else { |
| Log.i(TAG, "No IPv4 upstream interface, giving up."); |
| } |
| } |
| |
| if (iface != null) { |
| Network network = getConnectivityManager().getNetworkForType(upType); |
| if (network == null) { |
| Log.e(TAG, "No Network for upstream type " + upType + "!"); |
| } |
| setDnsForwarders(network, linkProperties); |
| } |
| } |
| notifyTetheredOfNewUpstreamIface(iface); |
| } |
| |
| protected void setDnsForwarders(final Network network, final LinkProperties lp) { |
| String[] dnsServers = mDefaultDnsServers; |
| final Collection<InetAddress> dnses = lp.getDnsServers(); |
| // TODO: Properly support the absence of DNS servers. |
| if (dnses != null && !dnses.isEmpty()) { |
| // TODO: remove this invocation of NetworkUtils.makeStrings(). |
| dnsServers = NetworkUtils.makeStrings(dnses); |
| } |
| if (VDBG) { |
| Log.d(TAG, "Setting DNS forwarders: Network=" + network + |
| ", dnsServers=" + Arrays.toString(dnsServers)); |
| } |
| try { |
| mNMService.setDnsForwarders(network, dnsServers); |
| } catch (Exception e) { |
| // TODO: Investigate how this can fail and what exactly |
| // happens if/when such failures occur. |
| Log.e(TAG, "Setting DNS forwarders failed!"); |
| transitionTo(mSetDnsForwardersErrorState); |
| } |
| } |
| |
| protected void notifyTetheredOfNewUpstreamIface(String ifaceName) { |
| if (DBG) Log.d(TAG, "Notifying tethered with upstream=" + ifaceName); |
| mCurrentUpstreamIface = ifaceName; |
| for (TetherInterfaceSM sm : mNotifyList) { |
| sm.sendMessage(TetherInterfaceSM.CMD_TETHER_CONNECTION_CHANGED, |
| ifaceName); |
| } |
| } |
| } |
| |
| private final AtomicInteger mSimBcastGenerationNumber = new AtomicInteger(0); |
| private SimChangeBroadcastReceiver mBroadcastReceiver = null; |
| |
| private void startListeningForSimChanges() { |
| if (DBG) Log.d(TAG, "startListeningForSimChanges"); |
| if (mBroadcastReceiver == null) { |
| mBroadcastReceiver = new SimChangeBroadcastReceiver( |
| mSimBcastGenerationNumber.incrementAndGet()); |
| final IntentFilter filter = new IntentFilter(); |
| filter.addAction(TelephonyIntents.ACTION_SIM_STATE_CHANGED); |
| |
| mContext.registerReceiver(mBroadcastReceiver, filter); |
| } |
| } |
| |
| private void stopListeningForSimChanges() { |
| if (DBG) Log.d(TAG, "stopListeningForSimChanges"); |
| if (mBroadcastReceiver != null) { |
| mSimBcastGenerationNumber.incrementAndGet(); |
| mContext.unregisterReceiver(mBroadcastReceiver); |
| mBroadcastReceiver = null; |
| } |
| } |
| |
| class SimChangeBroadcastReceiver extends BroadcastReceiver { |
| // used to verify this receiver is still current |
| final private int mGenerationNumber; |
| |
| // we're interested in edge-triggered LOADED notifications, so |
| // ignore LOADED unless we saw an ABSENT state first |
| private boolean mSimAbsentSeen = false; |
| |
| public SimChangeBroadcastReceiver(int generationNumber) { |
| super(); |
| mGenerationNumber = generationNumber; |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (DBG) { |
| Log.d(TAG, "simchange mGenerationNumber=" + mGenerationNumber + |
| ", current generationNumber=" + mSimBcastGenerationNumber.get()); |
| } |
| if (mGenerationNumber != mSimBcastGenerationNumber.get()) return; |
| |
| final String state = |
| intent.getStringExtra(IccCardConstants.INTENT_KEY_ICC_STATE); |
| |
| Log.d(TAG, "got Sim changed to state " + state + ", mSimAbsentSeen=" + |
| mSimAbsentSeen); |
| if (!mSimAbsentSeen && IccCardConstants.INTENT_VALUE_ICC_ABSENT.equals(state)) { |
| mSimAbsentSeen = true; |
| } |
| |
| if (mSimAbsentSeen && IccCardConstants.INTENT_VALUE_ICC_LOADED.equals(state)) { |
| mSimAbsentSeen = false; |
| try { |
| if (mContext.getResources().getString(com.android.internal.R.string. |
| config_mobile_hotspot_provision_app_no_ui).isEmpty() == false) { |
| ArrayList<Integer> tethered = new ArrayList<Integer>(); |
| synchronized (mPublicSync) { |
| Set ifaces = mIfaces.keySet(); |
| for (Object iface : ifaces) { |
| TetherInterfaceSM sm = mIfaces.get(iface); |
| if (sm != null && sm.isTethered()) { |
| if (isUsb((String)iface)) { |
| tethered.add(new Integer( |
| ConnectivityManager.TETHERING_USB)); |
| } else if (isWifi((String)iface)) { |
| tethered.add(new Integer( |
| ConnectivityManager.TETHERING_WIFI)); |
| } else if (isBluetooth((String)iface)) { |
| tethered.add(new Integer( |
| ConnectivityManager.TETHERING_BLUETOOTH)); |
| } |
| } |
| } |
| } |
| for (int tetherType : tethered) { |
| Intent startProvIntent = new Intent(); |
| startProvIntent.putExtra( |
| ConnectivityManager.EXTRA_ADD_TETHER_TYPE, tetherType); |
| startProvIntent.putExtra( |
| ConnectivityManager.EXTRA_RUN_PROVISION, true); |
| startProvIntent.setComponent(TETHER_SERVICE); |
| mContext.startServiceAsUser(startProvIntent, UserHandle.CURRENT); |
| } |
| Log.d(TAG, "re-evaluate provisioning"); |
| } else { |
| Log.d(TAG, "no prov-check needed for new SIM"); |
| } |
| } catch (Resources.NotFoundException e) { |
| Log.d(TAG, "no prov-check needed for new SIM"); |
| // not defined, do nothing |
| } |
| } |
| } |
| } |
| |
| class InitialState extends TetherMasterUtilState { |
| @Override |
| public void enter() { |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| maybeLogMessage(this, message.what); |
| boolean retValue = true; |
| switch (message.what) { |
| case CMD_TETHER_MODE_REQUESTED: |
| TetherInterfaceSM who = (TetherInterfaceSM)message.obj; |
| if (VDBG) Log.d(TAG, "Tether Mode requested by " + who); |
| mNotifyList.add(who); |
| transitionTo(mTetherModeAliveState); |
| break; |
| case CMD_TETHER_MODE_UNREQUESTED: |
| who = (TetherInterfaceSM)message.obj; |
| if (VDBG) Log.d(TAG, "Tether Mode unrequested by " + who); |
| int index = mNotifyList.indexOf(who); |
| if (index != -1) { |
| mNotifyList.remove(who); |
| } |
| break; |
| default: |
| retValue = false; |
| break; |
| } |
| return retValue; |
| } |
| } |
| |
| class TetherModeAliveState extends TetherMasterUtilState { |
| boolean mTryCell = true; |
| @Override |
| public void enter() { |
| // TODO: examine if we should check the return value. |
| turnOnMasterTetherSettings(); // may transition us out |
| startListeningForSimChanges(); |
| mUpstreamNetworkMonitor.start(); |
| |
| mTryCell = true; // better try something first pass or crazy tests cases will fail |
| chooseUpstreamType(mTryCell); |
| mTryCell = !mTryCell; |
| } |
| @Override |
| public void exit() { |
| // TODO: examine if we should check the return value. |
| turnOffUpstreamMobileConnection(); |
| mUpstreamNetworkMonitor.stop(); |
| stopListeningForSimChanges(); |
| notifyTetheredOfNewUpstreamIface(null); |
| } |
| @Override |
| public boolean processMessage(Message message) { |
| maybeLogMessage(this, message.what); |
| boolean retValue = true; |
| switch (message.what) { |
| case CMD_TETHER_MODE_REQUESTED: |
| TetherInterfaceSM who = (TetherInterfaceSM)message.obj; |
| if (VDBG) Log.d(TAG, "Tether Mode requested by " + who); |
| mNotifyList.add(who); |
| who.sendMessage(TetherInterfaceSM.CMD_TETHER_CONNECTION_CHANGED, |
| mCurrentUpstreamIface); |
| break; |
| case CMD_TETHER_MODE_UNREQUESTED: |
| who = (TetherInterfaceSM)message.obj; |
| if (VDBG) Log.d(TAG, "Tether Mode unrequested by " + who); |
| int index = mNotifyList.indexOf(who); |
| if (index != -1) { |
| if (DBG) Log.d(TAG, "TetherModeAlive removing notifyee " + who); |
| mNotifyList.remove(index); |
| if (mNotifyList.isEmpty()) { |
| turnOffMasterTetherSettings(); // transitions appropriately |
| } else { |
| if (DBG) { |
| Log.d(TAG, "TetherModeAlive still has " + mNotifyList.size() + |
| " live requests:"); |
| for (Object o : mNotifyList) Log.d(TAG, " " + o); |
| } |
| } |
| } else { |
| Log.e(TAG, "TetherModeAliveState UNREQUESTED has unknown who: " + who); |
| } |
| break; |
| case CMD_UPSTREAM_CHANGED: |
| // need to try DUN immediately if Wifi goes down |
| mTryCell = true; |
| chooseUpstreamType(mTryCell); |
| mTryCell = !mTryCell; |
| break; |
| case CMD_RETRY_UPSTREAM: |
| chooseUpstreamType(mTryCell); |
| mTryCell = !mTryCell; |
| break; |
| case EVENT_UPSTREAM_LINKPROPERTIES_CHANGED: |
| NetworkState state = (NetworkState) message.obj; |
| if (mUpstreamNetworkMonitor.processLinkPropertiesChanged(state)) { |
| setDnsForwarders(state.network, state.linkProperties); |
| } else if (mCurrentUpstreamIface == null) { |
| // If we have no upstream interface, try to run through upstream |
| // selection again. If, for example, IPv4 connectivity has shown up |
| // after IPv6 (e.g., 464xlat became available) we want the chance to |
| // notice and act accordingly. |
| chooseUpstreamType(false); |
| } |
| break; |
| case EVENT_UPSTREAM_LOST: |
| // TODO: Re-evaluate possible upstreams. Currently upstream reevaluation |
| // is triggered via received CONNECTIVITY_ACTION broadcasts that result |
| // in being passed a TetherMasterSM.CMD_UPSTREAM_CHANGED. |
| mUpstreamNetworkMonitor.processNetworkLost((Network) message.obj); |
| break; |
| default: |
| retValue = false; |
| break; |
| } |
| return retValue; |
| } |
| } |
| |
| class ErrorState extends State { |
| int mErrorNotification; |
| @Override |
| public boolean processMessage(Message message) { |
| boolean retValue = true; |
| switch (message.what) { |
| case CMD_TETHER_MODE_REQUESTED: |
| TetherInterfaceSM who = (TetherInterfaceSM)message.obj; |
| who.sendMessage(mErrorNotification); |
| break; |
| default: |
| retValue = false; |
| } |
| return retValue; |
| } |
| void notify(int msgType) { |
| mErrorNotification = msgType; |
| for (Object o : mNotifyList) { |
| TetherInterfaceSM sm = (TetherInterfaceSM)o; |
| sm.sendMessage(msgType); |
| } |
| } |
| |
| } |
| class SetIpForwardingEnabledErrorState extends ErrorState { |
| @Override |
| public void enter() { |
| Log.e(TAG, "Error in setIpForwardingEnabled"); |
| notify(TetherInterfaceSM.CMD_IP_FORWARDING_ENABLE_ERROR); |
| } |
| } |
| |
| class SetIpForwardingDisabledErrorState extends ErrorState { |
| @Override |
| public void enter() { |
| Log.e(TAG, "Error in setIpForwardingDisabled"); |
| notify(TetherInterfaceSM.CMD_IP_FORWARDING_DISABLE_ERROR); |
| } |
| } |
| |
| class StartTetheringErrorState extends ErrorState { |
| @Override |
| public void enter() { |
| Log.e(TAG, "Error in startTethering"); |
| notify(TetherInterfaceSM.CMD_START_TETHERING_ERROR); |
| try { |
| mNMService.setIpForwardingEnabled(false); |
| } catch (Exception e) {} |
| } |
| } |
| |
| class StopTetheringErrorState extends ErrorState { |
| @Override |
| public void enter() { |
| Log.e(TAG, "Error in stopTethering"); |
| notify(TetherInterfaceSM.CMD_STOP_TETHERING_ERROR); |
| try { |
| mNMService.setIpForwardingEnabled(false); |
| } catch (Exception e) {} |
| } |
| } |
| |
| class SetDnsForwardersErrorState extends ErrorState { |
| @Override |
| public void enter() { |
| Log.e(TAG, "Error in setDnsForwarders"); |
| notify(TetherInterfaceSM.CMD_SET_DNS_FORWARDERS_ERROR); |
| try { |
| mNMService.stopTethering(); |
| } catch (Exception e) {} |
| try { |
| mNMService.setIpForwardingEnabled(false); |
| } catch (Exception e) {} |
| } |
| } |
| } |
| |
| public void dump(FileDescriptor fd, PrintWriter writer, String[] args) { |
| final IndentingPrintWriter pw = new IndentingPrintWriter(writer, " "); |
| |
| if (mContext.checkCallingOrSelfPermission( |
| android.Manifest.permission.DUMP) != PackageManager.PERMISSION_GRANTED) { |
| pw.println("Permission Denial: can't dump ConnectivityService.Tether " + |
| "from from pid=" + Binder.getCallingPid() + ", uid=" + |
| Binder.getCallingUid()); |
| return; |
| } |
| |
| pw.println("Tethering:"); |
| pw.increaseIndent(); |
| pw.print("mUpstreamIfaceTypes:"); |
| synchronized (mPublicSync) { |
| for (Integer netType : mUpstreamIfaceTypes) { |
| pw.print(" " + ConnectivityManager.getNetworkTypeName(netType)); |
| } |
| pw.println(); |
| |
| pw.println("Tether state:"); |
| pw.increaseIndent(); |
| for (Object o : mIfaces.values()) { |
| pw.println(o); |
| } |
| pw.decreaseIndent(); |
| } |
| pw.decreaseIndent(); |
| return; |
| } |
| } |
