f59717ddb5
Due to the property trigger on persist.sys.usb.config, setting the default function also sets the current function. Now we combine both of these methods into setCurrentFunction, which has a "makeDefault" option to make the new function the default. This change should eliminate some problems with setting properties due to multiple property triggers happening at the same time. Change-Id: I9851299e9c2ee20475eada1a8104c0d50bf5a9e1 Signed-off-by: Mike Lockwood <lockwood@android.com>
1513 lines
61 KiB
Java
1513 lines
61 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.connectivity;
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import android.app.Notification;
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import android.app.NotificationManager;
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import android.app.PendingIntent;
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import android.bluetooth.BluetoothPan;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.pm.PackageManager;
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import android.content.res.Resources;
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import android.hardware.usb.UsbManager;
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import android.net.ConnectivityManager;
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import android.net.InterfaceConfiguration;
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import android.net.IConnectivityManager;
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import android.net.INetworkManagementEventObserver;
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import android.net.LinkAddress;
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import android.net.LinkProperties;
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import android.net.NetworkInfo;
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import android.net.NetworkUtils;
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import android.os.Binder;
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import android.os.Environment;
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import android.os.Handler;
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import android.os.HandlerThread;
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import android.os.IBinder;
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import android.os.INetworkManagementService;
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import android.os.Looper;
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import android.os.Message;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.provider.Settings;
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import android.util.Log;
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import com.android.internal.telephony.Phone;
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import com.android.internal.util.IState;
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import com.android.internal.util.State;
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import com.android.internal.util.StateMachine;
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import java.io.FileDescriptor;
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import java.io.PrintWriter;
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import java.net.InetAddress;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.Set;
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/**
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* @hide
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*
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* Timeout
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*
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* TODO - look for parent classes and code sharing
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*/
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public class Tethering extends INetworkManagementEventObserver.Stub {
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private Context mContext;
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private final static String TAG = "Tethering";
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private final static boolean DEBUG = true;
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private boolean mBooted = false;
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//used to remember if we got connected before boot finished
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private boolean mDeferedUsbConnection = false;
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// TODO - remove both of these - should be part of interface inspection/selection stuff
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private String[] mTetherableUsbRegexs;
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private String[] mTetherableWifiRegexs;
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private String[] mTetherableBluetoothRegexs;
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private String[] mUpstreamIfaceRegexs;
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private INetworkManagementService mNMService;
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private Looper mLooper;
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private HandlerThread mThread;
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private HashMap<String, TetherInterfaceSM> mIfaces; // all tethered/tetherable ifaces
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private BroadcastReceiver mStateReceiver;
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private static final String USB_NEAR_IFACE_ADDR = "192.168.42.129";
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private static final int USB_PREFIX_LENGTH = 24;
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// USB is 192.168.42.1 and 255.255.255.0
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// Wifi is 192.168.43.1 and 255.255.255.0
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// BT is limited to max default of 5 connections. 192.168.44.1 to 192.168.48.1
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// with 255.255.255.0
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private String[] mDhcpRange;
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private static final String[] DHCP_DEFAULT_RANGE = {
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"192.168.42.2", "192.168.42.254", "192.168.43.2", "192.168.43.254",
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"192.168.44.2", "192.168.44.254", "192.168.45.2", "192.168.45.254",
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"192.168.46.2", "192.168.46.254", "192.168.47.2", "192.168.47.254",
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"192.168.48.2", "192.168.48.254",
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};
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private String[] mDnsServers;
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private static final String DNS_DEFAULT_SERVER1 = "8.8.8.8";
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private static final String DNS_DEFAULT_SERVER2 = "8.8.4.4";
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// resampled each time we turn on tethering - used as cache for settings/config-val
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private boolean mDunRequired; // configuration info - must use DUN apn on 3g
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private StateMachine mTetherMasterSM;
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private Notification mTetheredNotification;
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// whether we can tether is the && of these two - they come in as separate
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// broadcasts so track them so we can decide what to do when either changes
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private boolean mUsbMassStorageOff; // track the status of USB Mass Storage
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private boolean mUsbConnected; // track the status of USB connection
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public Tethering(Context context, INetworkManagementService nmService, Looper looper) {
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mContext = context;
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mNMService = nmService;
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mLooper = looper;
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mIfaces = new HashMap<String, TetherInterfaceSM>();
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// make our own thread so we don't anr the system
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mThread = new HandlerThread("Tethering");
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mThread.start();
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mLooper = mThread.getLooper();
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mTetherMasterSM = new TetherMasterSM("TetherMaster", mLooper);
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mTetherMasterSM.start();
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mStateReceiver = new StateReceiver();
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IntentFilter filter = new IntentFilter();
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filter.addAction(UsbManager.ACTION_USB_STATE);
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filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
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filter.addAction(Intent.ACTION_BOOT_COMPLETED);
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mContext.registerReceiver(mStateReceiver, filter);
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filter = new IntentFilter();
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filter.addAction(Intent.ACTION_MEDIA_SHARED);
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filter.addAction(Intent.ACTION_MEDIA_UNSHARED);
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filter.addDataScheme("file");
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mContext.registerReceiver(mStateReceiver, filter);
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mUsbMassStorageOff = !Environment.MEDIA_SHARED.equals(
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Environment.getExternalStorageState());
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mDhcpRange = context.getResources().getStringArray(
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com.android.internal.R.array.config_tether_dhcp_range);
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if ((mDhcpRange.length == 0) || (mDhcpRange.length % 2 ==1)) {
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mDhcpRange = DHCP_DEFAULT_RANGE;
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}
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mDunRequired = false; // resample when we turn on
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mTetherableUsbRegexs = context.getResources().getStringArray(
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com.android.internal.R.array.config_tether_usb_regexs);
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mTetherableWifiRegexs = context.getResources().getStringArray(
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com.android.internal.R.array.config_tether_wifi_regexs);
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mTetherableBluetoothRegexs = context.getResources().getStringArray(
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com.android.internal.R.array.config_tether_bluetooth_regexs);
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mUpstreamIfaceRegexs = context.getResources().getStringArray(
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com.android.internal.R.array.config_tether_upstream_regexs);
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// TODO - remove and rely on real notifications of the current iface
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mDnsServers = new String[2];
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mDnsServers[0] = DNS_DEFAULT_SERVER1;
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mDnsServers[1] = DNS_DEFAULT_SERVER2;
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}
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public void interfaceLinkStatusChanged(String iface, boolean link) {
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if (DEBUG) Log.d(TAG, "interfaceLinkStatusChanged " + iface + ", " + link);
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boolean found = false;
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boolean usb = false;
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if (isWifi(iface)) {
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found = true;
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} else if (isUsb(iface)) {
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found = true;
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usb = true;
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} else if (isBluetooth(iface)) {
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found = true;
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}
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if (found == false) return;
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synchronized (mIfaces) {
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TetherInterfaceSM sm = mIfaces.get(iface);
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if (link) {
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if (sm == null) {
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sm = new TetherInterfaceSM(iface, mLooper, usb);
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mIfaces.put(iface, sm);
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sm.start();
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}
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} else {
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if (sm != null) {
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sm.sendMessage(TetherInterfaceSM.CMD_INTERFACE_DOWN);
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mIfaces.remove(iface);
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}
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}
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}
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}
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private boolean isUsb(String iface) {
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for (String regex : mTetherableUsbRegexs) {
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if (iface.matches(regex)) return true;
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}
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return false;
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}
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public boolean isWifi(String iface) {
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for (String regex : mTetherableWifiRegexs) {
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if (iface.matches(regex)) return true;
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}
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return false;
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}
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public boolean isBluetooth(String iface) {
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for (String regex : mTetherableBluetoothRegexs) {
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if (iface.matches(regex)) return true;
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}
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return false;
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}
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public void interfaceAdded(String iface) {
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boolean found = false;
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boolean usb = false;
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if (isWifi(iface)) {
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found = true;
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}
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if (isUsb(iface)) {
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found = true;
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usb = true;
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}
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if (isBluetooth(iface)) {
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found = true;
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}
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if (found == false) {
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if (DEBUG) Log.d(TAG, iface + " is not a tetherable iface, ignoring");
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return;
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}
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synchronized (mIfaces) {
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TetherInterfaceSM sm = mIfaces.get(iface);
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if (sm != null) {
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if (DEBUG) Log.d(TAG, "active iface (" + iface + ") reported as added, ignoring");
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return;
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}
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sm = new TetherInterfaceSM(iface, mLooper, usb);
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mIfaces.put(iface, sm);
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sm.start();
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}
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if (DEBUG) Log.d(TAG, "interfaceAdded :" + iface);
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}
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public void interfaceRemoved(String iface) {
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synchronized (mIfaces) {
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TetherInterfaceSM sm = mIfaces.get(iface);
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if (sm == null) {
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if (DEBUG) {
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Log.e(TAG, "attempting to remove unknown iface (" + iface + "), ignoring");
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}
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return;
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}
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sm.sendMessage(TetherInterfaceSM.CMD_INTERFACE_DOWN);
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mIfaces.remove(iface);
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}
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}
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public int tether(String iface) {
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Log.d(TAG, "Tethering " + iface);
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TetherInterfaceSM sm = null;
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synchronized (mIfaces) {
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sm = mIfaces.get(iface);
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}
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if (sm == null) {
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Log.e(TAG, "Tried to Tether an unknown iface :" + iface + ", ignoring");
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return ConnectivityManager.TETHER_ERROR_UNKNOWN_IFACE;
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}
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if (!sm.isAvailable() && !sm.isErrored()) {
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Log.e(TAG, "Tried to Tether an unavailable iface :" + iface + ", ignoring");
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return ConnectivityManager.TETHER_ERROR_UNAVAIL_IFACE;
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}
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sm.sendMessage(TetherInterfaceSM.CMD_TETHER_REQUESTED);
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return ConnectivityManager.TETHER_ERROR_NO_ERROR;
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}
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public int untether(String iface) {
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Log.d(TAG, "Untethering " + iface);
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TetherInterfaceSM sm = null;
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synchronized (mIfaces) {
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sm = mIfaces.get(iface);
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}
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if (sm == null) {
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Log.e(TAG, "Tried to Untether an unknown iface :" + iface + ", ignoring");
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return ConnectivityManager.TETHER_ERROR_UNKNOWN_IFACE;
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}
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if (sm.isErrored()) {
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Log.e(TAG, "Tried to Untethered an errored iface :" + iface + ", ignoring");
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return ConnectivityManager.TETHER_ERROR_UNAVAIL_IFACE;
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}
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sm.sendMessage(TetherInterfaceSM.CMD_TETHER_UNREQUESTED);
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return ConnectivityManager.TETHER_ERROR_NO_ERROR;
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}
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public int getLastTetherError(String iface) {
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TetherInterfaceSM sm = null;
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synchronized (mIfaces) {
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sm = mIfaces.get(iface);
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}
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if (sm == null) {
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Log.e(TAG, "Tried to getLastTetherError on an unknown iface :" + iface + ", ignoring");
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return ConnectivityManager.TETHER_ERROR_UNKNOWN_IFACE;
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}
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return sm.getLastError();
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}
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private void sendTetherStateChangedBroadcast() {
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IBinder b = ServiceManager.getService(Context.CONNECTIVITY_SERVICE);
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IConnectivityManager cm = IConnectivityManager.Stub.asInterface(b);
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try {
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if (!cm.isTetheringSupported()) return;
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} catch (RemoteException e) {
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return;
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}
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ArrayList<String> availableList = new ArrayList<String>();
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ArrayList<String> activeList = new ArrayList<String>();
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ArrayList<String> erroredList = new ArrayList<String>();
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boolean wifiTethered = false;
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boolean usbTethered = false;
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boolean bluetoothTethered = false;
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synchronized (mIfaces) {
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Set ifaces = mIfaces.keySet();
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for (Object iface : ifaces) {
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TetherInterfaceSM sm = mIfaces.get(iface);
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if (sm != null) {
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if (sm.isErrored()) {
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erroredList.add((String)iface);
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} else if (sm.isAvailable()) {
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availableList.add((String)iface);
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} else if (sm.isTethered()) {
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if (isUsb((String)iface)) {
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usbTethered = true;
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} else if (isWifi((String)iface)) {
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wifiTethered = true;
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} else if (isBluetooth((String)iface)) {
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bluetoothTethered = true;
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}
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activeList.add((String)iface);
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}
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}
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}
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}
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Intent broadcast = new Intent(ConnectivityManager.ACTION_TETHER_STATE_CHANGED);
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broadcast.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
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broadcast.putStringArrayListExtra(ConnectivityManager.EXTRA_AVAILABLE_TETHER,
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availableList);
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broadcast.putStringArrayListExtra(ConnectivityManager.EXTRA_ACTIVE_TETHER, activeList);
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broadcast.putStringArrayListExtra(ConnectivityManager.EXTRA_ERRORED_TETHER,
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erroredList);
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mContext.sendStickyBroadcast(broadcast);
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if (DEBUG) {
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Log.d(TAG, "sendTetherStateChangedBroadcast " + availableList.size() + ", " +
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activeList.size() + ", " + erroredList.size());
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}
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if (usbTethered) {
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if (wifiTethered || bluetoothTethered) {
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showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_general);
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} else {
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showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_usb);
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}
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} else if (wifiTethered) {
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if (bluetoothTethered) {
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showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_general);
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} else {
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showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_wifi);
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}
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} else if (bluetoothTethered) {
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showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_bluetooth);
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} else {
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clearTetheredNotification();
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}
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}
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private void showTetheredNotification(int icon) {
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NotificationManager notificationManager =
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(NotificationManager)mContext.getSystemService(Context.NOTIFICATION_SERVICE);
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if (notificationManager == null) {
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return;
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}
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if (mTetheredNotification != null) {
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if (mTetheredNotification.icon == icon) {
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return;
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}
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notificationManager.cancel(mTetheredNotification.icon);
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}
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Intent intent = new Intent();
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intent.setClassName("com.android.settings", "com.android.settings.TetherSettings");
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intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
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PendingIntent pi = PendingIntent.getActivity(mContext, 0, intent, 0);
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Resources r = Resources.getSystem();
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CharSequence title = r.getText(com.android.internal.R.string.tethered_notification_title);
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CharSequence message = r.getText(com.android.internal.R.string.
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tethered_notification_message);
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if (mTetheredNotification == null) {
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mTetheredNotification = new Notification();
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mTetheredNotification.when = 0;
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}
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mTetheredNotification.icon = icon;
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mTetheredNotification.defaults &= ~Notification.DEFAULT_SOUND;
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mTetheredNotification.flags = Notification.FLAG_ONGOING_EVENT;
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mTetheredNotification.tickerText = title;
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mTetheredNotification.setLatestEventInfo(mContext, title, message, pi);
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notificationManager.notify(mTetheredNotification.icon, mTetheredNotification);
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}
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private void clearTetheredNotification() {
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NotificationManager notificationManager =
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(NotificationManager)mContext.getSystemService(Context.NOTIFICATION_SERVICE);
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if (notificationManager != null && mTetheredNotification != null) {
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notificationManager.cancel(mTetheredNotification.icon);
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mTetheredNotification = null;
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}
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}
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private void updateUsbStatus() {
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boolean enable = mUsbConnected && mUsbMassStorageOff;
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if (mBooted) {
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enableUsbIfaces(enable);
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}
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}
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private class StateReceiver extends BroadcastReceiver {
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public void onReceive(Context content, Intent intent) {
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String action = intent.getAction();
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if (action.equals(UsbManager.ACTION_USB_STATE)) {
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mUsbConnected = intent.getExtras().getBoolean(UsbManager.USB_CONNECTED);
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updateUsbStatus();
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} else if (action.equals(Intent.ACTION_MEDIA_SHARED)) {
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mUsbMassStorageOff = false;
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updateUsbStatus();
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}
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else if (action.equals(Intent.ACTION_MEDIA_UNSHARED)) {
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mUsbMassStorageOff = true;
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updateUsbStatus();
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} else if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
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if (DEBUG) Log.d(TAG, "Tethering got CONNECTIVITY_ACTION");
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mTetherMasterSM.sendMessage(TetherMasterSM.CMD_UPSTREAM_CHANGED);
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} else if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
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mBooted = true;
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updateUsbStatus();
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}
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}
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}
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// used on cable insert/remove
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private void enableUsbIfaces(boolean enable) {
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// add/remove USB interfaces when USB is connected/disconnected
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for (String intf : mTetherableUsbRegexs) {
|
|
if (enable) {
|
|
interfaceAdded(intf);
|
|
} else {
|
|
interfaceRemoved(intf);
|
|
}
|
|
}
|
|
|
|
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)) {
|
|
if (enable) {
|
|
interfaceAdded(iface);
|
|
} else {
|
|
interfaceRemoved(iface);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// toggled when we enter/leave the fully tethered state
|
|
private boolean enableUsbRndis(boolean enabled) {
|
|
if (DEBUG) Log.d(TAG, "enableUsbRndis(" + enabled + ")");
|
|
|
|
UsbManager usbManager = (UsbManager)mContext.getSystemService(Context.USB_SERVICE);
|
|
if (usbManager == null) {
|
|
Log.d(TAG, "could not get UsbManager");
|
|
return false;
|
|
}
|
|
try {
|
|
if (enabled) {
|
|
usbManager.setCurrentFunction(UsbManager.USB_FUNCTION_RNDIS, false);
|
|
} else {
|
|
usbManager.setCurrentFunction(null, false);
|
|
}
|
|
} catch (Exception e) {
|
|
Log.e(TAG, "Error toggling usb RNDIS", e);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// configured when we start tethering and unconfig'd on error or conclusion
|
|
private boolean configureUsbIface(boolean enabled) {
|
|
if (DEBUG) Log.d(TAG, "configureUsbIface(" + enabled + ")");
|
|
|
|
if (enabled) {
|
|
// must enable RNDIS first to create the interface
|
|
enableUsbRndis(enabled);
|
|
}
|
|
|
|
try {
|
|
// bring toggle the 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.addr = new LinkAddress(addr, USB_PREFIX_LENGTH);
|
|
if (enabled) {
|
|
ifcg.interfaceFlags = ifcg.interfaceFlags.replace("down", "up");
|
|
} else {
|
|
ifcg.interfaceFlags = ifcg.interfaceFlags.replace("up", "down");
|
|
}
|
|
ifcg.interfaceFlags = ifcg.interfaceFlags.replace("running", "");
|
|
ifcg.interfaceFlags = ifcg.interfaceFlags.replace(" "," ");
|
|
mNMService.setInterfaceConfig(iface, ifcg);
|
|
}
|
|
} catch (Exception e) {
|
|
Log.e(TAG, "Error configuring interface " + iface, e);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
} finally {
|
|
if (!enabled) {
|
|
enableUsbRndis(false);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
public String[] getTetherableUsbRegexs() {
|
|
return mTetherableUsbRegexs;
|
|
}
|
|
|
|
public String[] getTetherableWifiRegexs() {
|
|
return mTetherableWifiRegexs;
|
|
}
|
|
|
|
public String[] getTetherableBluetoothRegexs() {
|
|
return mTetherableBluetoothRegexs;
|
|
}
|
|
|
|
public String[] getUpstreamIfaceRegexs() {
|
|
return mUpstreamIfaceRegexs;
|
|
}
|
|
|
|
public boolean isDunRequired() {
|
|
boolean defaultVal = mContext.getResources().getBoolean(
|
|
com.android.internal.R.bool.config_tether_dun_required);
|
|
boolean result = (Settings.Secure.getInt(mContext.getContentResolver(),
|
|
Settings.Secure.TETHER_DUN_REQUIRED, (defaultVal ? 1 : 0)) == 1);
|
|
return result;
|
|
}
|
|
|
|
public String[] getTetheredIfaces() {
|
|
ArrayList<String> list = new ArrayList<String>();
|
|
synchronized (mIfaces) {
|
|
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 (mIfaces) {
|
|
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[] getErroredIfaces() {
|
|
ArrayList<String> list = new ArrayList<String>();
|
|
synchronized (mIfaces) {
|
|
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;
|
|
}
|
|
|
|
public void handleTetherIfaceChange(String iface) {
|
|
// check if iface is white listed
|
|
for (String regex : mUpstreamIfaceRegexs) {
|
|
if (iface.matches(regex)) {
|
|
if (DEBUG) Log.d(TAG, "Tethering got Interface Change");
|
|
mTetherMasterSM.sendMessage(TetherMasterSM.CMD_IFACE_CHANGED, iface);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
class TetherInterfaceSM extends StateMachine {
|
|
// notification from the master SM that it's not in tether mode
|
|
static final int CMD_TETHER_MODE_DEAD = 1;
|
|
// request from the user that it wants to tether
|
|
static final int CMD_TETHER_REQUESTED = 2;
|
|
// request from the user that it wants to untether
|
|
static final int CMD_TETHER_UNREQUESTED = 3;
|
|
// notification that this interface is down
|
|
static final int CMD_INTERFACE_DOWN = 4;
|
|
// notification that this interface is up
|
|
static final int CMD_INTERFACE_UP = 5;
|
|
// notification from the master SM that it had an error turning on cellular dun
|
|
static final int CMD_CELL_DUN_ERROR = 6;
|
|
// notification from the master SM that it had trouble enabling IP Forwarding
|
|
static final int CMD_IP_FORWARDING_ENABLE_ERROR = 7;
|
|
// notification from the master SM that it had trouble disabling IP Forwarding
|
|
static final int CMD_IP_FORWARDING_DISABLE_ERROR = 8;
|
|
// notification from the master SM that it had trouble staring tethering
|
|
static final int CMD_START_TETHERING_ERROR = 9;
|
|
// notification from the master SM that it had trouble stopping tethering
|
|
static final int CMD_STOP_TETHERING_ERROR = 10;
|
|
// notification from the master SM that it had trouble setting the DNS forwarders
|
|
static final int CMD_SET_DNS_FORWARDERS_ERROR = 11;
|
|
// the upstream connection has changed
|
|
static final int CMD_TETHER_CONNECTION_CHANGED = 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 synchronized int getLastError() {
|
|
return mLastError;
|
|
}
|
|
|
|
private synchronized void setLastError(int error) {
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
|
|
// synchronized between this getter and the following setter
|
|
public synchronized boolean isAvailable() {
|
|
return mAvailable;
|
|
}
|
|
|
|
private synchronized void setAvailable(boolean available) {
|
|
mAvailable = available;
|
|
}
|
|
|
|
// synchronized between this getter and the following setter
|
|
public synchronized boolean isTethered() {
|
|
return mTethered;
|
|
}
|
|
|
|
private synchronized void setTethered(boolean tethered) {
|
|
mTethered = tethered;
|
|
}
|
|
|
|
// synchronized between this getter and the following setter
|
|
public synchronized boolean isErrored() {
|
|
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) {
|
|
if (DEBUG) Log.d(TAG, "InitialState.processMessage what=" + 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) {
|
|
if (DEBUG) Log.d(TAG, "StartingState.processMessage what=" + 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) {
|
|
setLastError(ConnectivityManager.TETHER_ERROR_TETHER_IFACE_ERROR);
|
|
|
|
transitionTo(mInitialState);
|
|
return;
|
|
}
|
|
if (DEBUG) Log.d(TAG, "Tethered " + mIfaceName);
|
|
setAvailable(false);
|
|
setTethered(true);
|
|
sendTetherStateChangedBroadcast();
|
|
}
|
|
@Override
|
|
public boolean processMessage(Message message) {
|
|
if (DEBUG) Log.d(TAG, "TetheredState.processMessage what=" + message.what);
|
|
boolean retValue = true;
|
|
boolean error = false;
|
|
switch (message.what) {
|
|
case CMD_TETHER_UNREQUESTED:
|
|
case CMD_INTERFACE_DOWN:
|
|
if (mMyUpstreamIfaceName != null) {
|
|
try {
|
|
mNMService.disableNat(mIfaceName, mMyUpstreamIfaceName);
|
|
mMyUpstreamIfaceName = null;
|
|
} catch (Exception e) {
|
|
try {
|
|
mNMService.untetherInterface(mIfaceName);
|
|
} catch (Exception ee) {}
|
|
|
|
setLastErrorAndTransitionToInitialState(
|
|
ConnectivityManager.TETHER_ERROR_DISABLE_NAT_ERROR);
|
|
break;
|
|
}
|
|
}
|
|
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 (DEBUG) 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 (DEBUG) Log.d(TAG, "Connection changed noop - dropping");
|
|
break;
|
|
}
|
|
if (mMyUpstreamIfaceName != null) {
|
|
try {
|
|
mNMService.disableNat(mIfaceName, mMyUpstreamIfaceName);
|
|
mMyUpstreamIfaceName = null;
|
|
} catch (Exception e) {
|
|
try {
|
|
mNMService.untetherInterface(mIfaceName);
|
|
} catch (Exception ee) {}
|
|
|
|
setLastErrorAndTransitionToInitialState(
|
|
ConnectivityManager.TETHER_ERROR_DISABLE_NAT_ERROR);
|
|
break;
|
|
}
|
|
}
|
|
if (newUpstreamIfaceName != null) {
|
|
try {
|
|
mNMService.enableNat(mIfaceName, newUpstreamIfaceName);
|
|
} catch (Exception e) {
|
|
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:
|
|
if (mMyUpstreamIfaceName != null) {
|
|
try {
|
|
mNMService.disableNat(mIfaceName, mMyUpstreamIfaceName);
|
|
mMyUpstreamIfaceName = null;
|
|
} catch (Exception e) {
|
|
try {
|
|
mNMService.untetherInterface(mIfaceName);
|
|
} catch (Exception ee) {}
|
|
|
|
setLastErrorAndTransitionToInitialState(
|
|
ConnectivityManager.TETHER_ERROR_DISABLE_NAT_ERROR);
|
|
break;
|
|
}
|
|
}
|
|
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 (DEBUG) 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);
|
|
}
|
|
|
|
}
|
|
|
|
class TetherMasterSM extends StateMachine {
|
|
// an interface SM has requested Tethering
|
|
static final int CMD_TETHER_MODE_REQUESTED = 1;
|
|
// an interface SM has unrequested Tethering
|
|
static final int CMD_TETHER_MODE_UNREQUESTED = 2;
|
|
// upstream connection change - do the right thing
|
|
static final int CMD_UPSTREAM_CHANGED = 3;
|
|
// we received notice that the cellular DUN connection is up
|
|
static final int CMD_CELL_CONNECTION_RENEW = 4;
|
|
// we don't have a valid upstream conn, check again after a delay
|
|
static final int CMD_RETRY_UPSTREAM = 5;
|
|
// received an indication that upstream interface has changed
|
|
static final int CMD_IFACE_CHANGED = 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 mNotifyList;
|
|
|
|
private int mCurrentConnectionSequence;
|
|
private boolean mMobileReserved = false;
|
|
|
|
private String mUpstreamIfaceName = null;
|
|
|
|
private static final int UPSTREAM_SETTLE_TIME_MS = 10000;
|
|
private static final int CELL_CONNECTION_RENEW_MS = 40000;
|
|
|
|
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();
|
|
setInitialState(mInitialState);
|
|
}
|
|
|
|
class TetherMasterUtilState extends State {
|
|
protected final static boolean TRY_TO_SETUP_MOBILE_CONNECTION = true;
|
|
protected final static boolean WAIT_FOR_NETWORK_TO_SETTLE = false;
|
|
|
|
@Override
|
|
public boolean processMessage(Message m) {
|
|
return false;
|
|
}
|
|
protected boolean turnOnMobileConnection() {
|
|
boolean retValue = true;
|
|
if (mMobileReserved) return retValue;
|
|
IBinder b = ServiceManager.getService(Context.CONNECTIVITY_SERVICE);
|
|
IConnectivityManager cm = IConnectivityManager.Stub.asInterface(b);
|
|
int result = Phone.APN_REQUEST_FAILED;
|
|
try {
|
|
result = cm.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
|
|
(mDunRequired ? Phone.FEATURE_ENABLE_DUN_ALWAYS :
|
|
Phone.FEATURE_ENABLE_HIPRI), new Binder());
|
|
} catch (Exception e) {
|
|
}
|
|
switch (result) {
|
|
case Phone.APN_ALREADY_ACTIVE:
|
|
case Phone.APN_REQUEST_STARTED:
|
|
mMobileReserved = true;
|
|
Message m = obtainMessage(CMD_CELL_CONNECTION_RENEW);
|
|
m.arg1 = ++mCurrentConnectionSequence;
|
|
sendMessageDelayed(m, CELL_CONNECTION_RENEW_MS);
|
|
break;
|
|
case Phone.APN_REQUEST_FAILED:
|
|
default:
|
|
retValue = false;
|
|
break;
|
|
}
|
|
|
|
return retValue;
|
|
}
|
|
protected boolean turnOffMobileConnection() {
|
|
if (mMobileReserved) {
|
|
IBinder b = ServiceManager.getService(Context.CONNECTIVITY_SERVICE);
|
|
IConnectivityManager cm = IConnectivityManager.Stub.asInterface(b);
|
|
try {
|
|
cm.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
|
|
(mDunRequired? Phone.FEATURE_ENABLE_DUN_ALWAYS :
|
|
Phone.FEATURE_ENABLE_HIPRI));
|
|
} catch (Exception e) {
|
|
return false;
|
|
}
|
|
mMobileReserved = false;
|
|
}
|
|
return true;
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
try {
|
|
mNMService.setDnsForwarders(mDnsServers);
|
|
} catch (Exception e) {
|
|
transitionTo(mSetDnsForwardersErrorState);
|
|
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 String findActiveUpstreamIface() {
|
|
// check for what iface we can use - if none found switch to error.
|
|
IBinder b = ServiceManager.getService(Context.CONNECTIVITY_SERVICE);
|
|
IConnectivityManager cm = IConnectivityManager.Stub.asInterface(b);
|
|
|
|
try {
|
|
LinkProperties defaultProp = cm.getActiveLinkProperties();
|
|
if (defaultProp != null) {
|
|
String iface = defaultProp.getInterfaceName();
|
|
for(String regex : mUpstreamIfaceRegexs) {
|
|
if (iface.matches(regex)) return iface;
|
|
}
|
|
}
|
|
} catch (RemoteException e) { }
|
|
|
|
String[] ifaces = new String[0];
|
|
try {
|
|
ifaces = mNMService.listInterfaces();
|
|
} catch (Exception e) {
|
|
Log.e(TAG, "Error listing Interfaces", e);
|
|
return null;
|
|
}
|
|
|
|
for (String regex : mUpstreamIfaceRegexs) {
|
|
for (String iface : ifaces) {
|
|
if (iface.matches(regex)) {
|
|
// verify it is active
|
|
InterfaceConfiguration ifcg = null;
|
|
try {
|
|
ifcg = mNMService.getInterfaceConfig(iface);
|
|
if (ifcg.isActive()) {
|
|
return iface;
|
|
}
|
|
} catch (Exception e) {
|
|
Log.e(TAG, "Error getting iface config", e);
|
|
// ignore - try next
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
protected void chooseUpstreamType(boolean tryCell) {
|
|
// decide if the current upstream is good or not and if not
|
|
// do something about it (start up DUN if required or HiPri if not)
|
|
String iface = findActiveUpstreamIface();
|
|
IBinder b = ServiceManager.getService(Context.CONNECTIVITY_SERVICE);
|
|
IConnectivityManager cm = IConnectivityManager.Stub.asInterface(b);
|
|
mMobileReserved = false;
|
|
if (DEBUG) {
|
|
Log.d(TAG, "chooseUpstreamType(" + tryCell + "), dunRequired ="
|
|
+ mDunRequired + ", iface=" + iface);
|
|
}
|
|
if (iface != null) {
|
|
try {
|
|
if (mDunRequired) {
|
|
// check if Dun is on - we can use that
|
|
NetworkInfo info = cm.getNetworkInfo(
|
|
ConnectivityManager.TYPE_MOBILE_DUN);
|
|
if (info.isConnected()) {
|
|
if (DEBUG) Log.d(TAG, "setting dun ifacename =" + iface);
|
|
// even if we're already connected - it may be somebody else's
|
|
// refcount, so add our own
|
|
turnOnMobileConnection();
|
|
} else {
|
|
// verify the iface is not the default mobile - can't use that!
|
|
info = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
|
|
if (info.isConnected()) {
|
|
iface = null; // can't accept this one
|
|
}
|
|
}
|
|
} else {
|
|
if (DEBUG) Log.d(TAG, "checking if hipri brought us this connection");
|
|
NetworkInfo info = cm.getNetworkInfo(
|
|
ConnectivityManager.TYPE_MOBILE_HIPRI);
|
|
if (info.isConnected()) {
|
|
if (DEBUG) Log.d(TAG, "yes - hipri in use");
|
|
// even if we're already connected - it may be sombody else's
|
|
// refcount, so add our own
|
|
turnOnMobileConnection();
|
|
}
|
|
}
|
|
} catch (RemoteException e) {
|
|
Log.e(TAG, "RemoteException calling ConnectivityManager", e);
|
|
iface = null;
|
|
}
|
|
}
|
|
// may have been set to null in the if above
|
|
if (iface == null ) {
|
|
boolean success = false;
|
|
if (tryCell == TRY_TO_SETUP_MOBILE_CONNECTION) {
|
|
success = turnOnMobileConnection();
|
|
}
|
|
if (!success) {
|
|
// wait for things to settle and retry
|
|
sendMessageDelayed(CMD_RETRY_UPSTREAM, UPSTREAM_SETTLE_TIME_MS);
|
|
}
|
|
}
|
|
notifyTetheredOfNewUpstreamIface(iface);
|
|
}
|
|
protected void notifyTetheredOfNewUpstreamIface(String ifaceName) {
|
|
if (DEBUG) Log.d(TAG, "notifying tethered with iface =" + ifaceName);
|
|
mUpstreamIfaceName = ifaceName;
|
|
for (Object o : mNotifyList) {
|
|
TetherInterfaceSM sm = (TetherInterfaceSM)o;
|
|
sm.sendMessage(TetherInterfaceSM.CMD_TETHER_CONNECTION_CHANGED,
|
|
ifaceName);
|
|
}
|
|
}
|
|
}
|
|
|
|
class InitialState extends TetherMasterUtilState {
|
|
@Override
|
|
public void enter() {
|
|
mMobileReserved = false;
|
|
}
|
|
@Override
|
|
public boolean processMessage(Message message) {
|
|
if (DEBUG) Log.d(TAG, "MasterInitialState.processMessage what=" + message.what);
|
|
boolean retValue = true;
|
|
switch (message.what) {
|
|
case CMD_TETHER_MODE_REQUESTED:
|
|
mDunRequired = isDunRequired();
|
|
TetherInterfaceSM who = (TetherInterfaceSM)message.obj;
|
|
if (DEBUG) Log.d(TAG, "Tether Mode requested by " + who.toString());
|
|
mNotifyList.add(who);
|
|
transitionTo(mTetherModeAliveState);
|
|
break;
|
|
case CMD_TETHER_MODE_UNREQUESTED:
|
|
who = (TetherInterfaceSM)message.obj;
|
|
if (DEBUG) Log.d(TAG, "Tether Mode unrequested by " + who.toString());
|
|
int index = mNotifyList.indexOf(who);
|
|
if (index != -1) {
|
|
mNotifyList.remove(who);
|
|
}
|
|
break;
|
|
default:
|
|
retValue = false;
|
|
break;
|
|
}
|
|
return retValue;
|
|
}
|
|
}
|
|
|
|
class TetherModeAliveState extends TetherMasterUtilState {
|
|
boolean mTryCell = !WAIT_FOR_NETWORK_TO_SETTLE;
|
|
@Override
|
|
public void enter() {
|
|
mTryCell = !WAIT_FOR_NETWORK_TO_SETTLE; // better try something first pass
|
|
// or crazy tests cases will fail
|
|
chooseUpstreamType(mTryCell);
|
|
mTryCell = !mTryCell;
|
|
turnOnMasterTetherSettings(); // may transition us out
|
|
}
|
|
@Override
|
|
public void exit() {
|
|
turnOffMobileConnection();
|
|
notifyTetheredOfNewUpstreamIface(null);
|
|
}
|
|
@Override
|
|
public boolean processMessage(Message message) {
|
|
if (DEBUG) Log.d(TAG, "TetherModeAliveState.processMessage what=" + message.what);
|
|
boolean retValue = true;
|
|
switch (message.what) {
|
|
case CMD_TETHER_MODE_REQUESTED:
|
|
TetherInterfaceSM who = (TetherInterfaceSM)message.obj;
|
|
mNotifyList.add(who);
|
|
who.sendMessage(TetherInterfaceSM.CMD_TETHER_CONNECTION_CHANGED,
|
|
mUpstreamIfaceName);
|
|
break;
|
|
case CMD_TETHER_MODE_UNREQUESTED:
|
|
who = (TetherInterfaceSM)message.obj;
|
|
int index = mNotifyList.indexOf(who);
|
|
if (index != -1) {
|
|
mNotifyList.remove(index);
|
|
if (mNotifyList.isEmpty()) {
|
|
turnOffMasterTetherSettings(); // transitions appropriately
|
|
}
|
|
}
|
|
break;
|
|
case CMD_UPSTREAM_CHANGED:
|
|
// need to try DUN immediately if Wifi goes down
|
|
mTryCell = !WAIT_FOR_NETWORK_TO_SETTLE;
|
|
chooseUpstreamType(mTryCell);
|
|
mTryCell = !mTryCell;
|
|
break;
|
|
case CMD_CELL_CONNECTION_RENEW:
|
|
// make sure we're still using a requested connection - may have found
|
|
// wifi or something since then.
|
|
if (mCurrentConnectionSequence == message.arg1) {
|
|
if (DEBUG) {
|
|
Log.d(TAG, "renewing mobile connection - requeuing for another " +
|
|
CELL_CONNECTION_RENEW_MS + "ms");
|
|
}
|
|
mMobileReserved = false; // need to renew it
|
|
turnOnMobileConnection();
|
|
}
|
|
break;
|
|
case CMD_RETRY_UPSTREAM:
|
|
chooseUpstreamType(mTryCell);
|
|
mTryCell = !mTryCell;
|
|
break;
|
|
case CMD_IFACE_CHANGED:
|
|
String iface = (String)message.obj;
|
|
if (DEBUG) Log.d(TAG, "Activie upstream interface changed: " + iface);
|
|
notifyTetheredOfNewUpstreamIface(iface);
|
|
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 pw, String[] args) {
|
|
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();
|
|
pw.println("Tether state:");
|
|
synchronized (mIfaces) {
|
|
for (Object o : mIfaces.values()) {
|
|
pw.println(" "+o.toString());
|
|
}
|
|
}
|
|
pw.println();
|
|
return;
|
|
}
|
|
}
|