5c7daac2e3
1. Add addressUpdated and addressRemoved methods to
INetworkManagementEventObserver. (The -Updated method is not
called -Added because it gets called for both adds and
changes.) Update all its callers in the tree.
2. Make NetworkManagementService parse IP address notifications
from NetlinkHandler and call the address{Removed,Updated} on
its observers.
Bug: 10232006
Change-Id: Ieb185dbba052bdbff03caafc0cf5397a7f04dc6d
1611 lines
65 KiB
Java
1611 lines
65 KiB
Java
/*
|
|
* 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.content.BroadcastReceiver;
|
|
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.IConnectivityManager;
|
|
import android.net.INetworkManagementEventObserver;
|
|
import android.net.INetworkStatsService;
|
|
import android.net.InterfaceConfiguration;
|
|
import android.net.LinkAddress;
|
|
import android.net.LinkProperties;
|
|
import android.net.NetworkInfo;
|
|
import android.net.NetworkUtils;
|
|
import android.net.RouteInfo;
|
|
import android.os.Binder;
|
|
import android.os.INetworkManagementService;
|
|
import android.os.Looper;
|
|
import android.os.Message;
|
|
import android.os.RemoteException;
|
|
import android.os.UserHandle;
|
|
import android.provider.Settings;
|
|
import android.util.Log;
|
|
|
|
import com.android.internal.telephony.Phone;
|
|
import com.android.internal.telephony.PhoneConstants;
|
|
import com.android.internal.util.IState;
|
|
import com.android.internal.util.State;
|
|
import com.android.internal.util.StateMachine;
|
|
import com.android.server.IoThread;
|
|
import com.google.android.collect.Lists;
|
|
|
|
import java.io.FileDescriptor;
|
|
import java.io.PrintWriter;
|
|
import java.net.InetAddress;
|
|
import java.net.Inet4Address;
|
|
import java.util.ArrayList;
|
|
import java.util.Collection;
|
|
import java.util.HashMap;
|
|
import java.util.Iterator;
|
|
import java.util.Set;
|
|
|
|
/**
|
|
* @hide
|
|
*
|
|
* Timeout
|
|
*
|
|
* TODO - look for parent classes and code sharing
|
|
*/
|
|
public class Tethering extends INetworkManagementEventObserver.Stub {
|
|
|
|
private Context mContext;
|
|
private final static String TAG = "Tethering";
|
|
private final static boolean DBG = true;
|
|
private final static boolean VDBG = false;
|
|
|
|
// 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 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 IConnectivityManager mConnService;
|
|
private Looper mLooper;
|
|
|
|
private HashMap<String, TetherInterfaceSM> mIfaces; // all tethered/tetherable ifaces
|
|
|
|
private BroadcastReceiver mStateReceiver;
|
|
|
|
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
|
|
|
|
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",
|
|
};
|
|
|
|
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 StateMachine mTetherMasterSM;
|
|
|
|
private Notification mTetheredNotification;
|
|
|
|
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, IConnectivityManager connService, Looper looper) {
|
|
mContext = context;
|
|
mNMService = nmService;
|
|
mStatsService = statsService;
|
|
mConnService = connService;
|
|
mLooper = looper;
|
|
|
|
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();
|
|
|
|
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;
|
|
}
|
|
|
|
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();
|
|
}
|
|
|
|
public void interfaceStatusChanged(String iface, boolean up) {
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public void interfaceLinkStateChanged(String iface, boolean up) {
|
|
if (VDBG) Log.d(TAG, "interfaceLinkStateChanged " + iface + ", " + 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;
|
|
}
|
|
}
|
|
|
|
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();
|
|
}
|
|
}
|
|
|
|
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 addressUpdated(String address, String iface, int flags, int scope) {}
|
|
|
|
public void addressRemoved(String address, String iface, int flags, int scope) {}
|
|
|
|
public void limitReached(String limitName, String iface) {}
|
|
|
|
public void interfaceClassDataActivityChanged(String label, boolean active) {}
|
|
|
|
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 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() {
|
|
try {
|
|
if (!mConnService.isTetheringSupported()) return;
|
|
} catch (RemoteException e) {
|
|
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, "sendTetherStateChangedBroadcast " + availableList.size() + ", " +
|
|
activeList.size() + ", " + erroredList.size());
|
|
}
|
|
|
|
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 {
|
|
showTetheredNotification(com.android.internal.R.drawable.stat_sys_tether_wifi);
|
|
}
|
|
} 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 (mTetheredNotification != null) {
|
|
if (mTetheredNotification.icon == icon) {
|
|
return;
|
|
}
|
|
notificationManager.cancelAsUser(null, mTetheredNotification.icon,
|
|
UserHandle.ALL);
|
|
}
|
|
|
|
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 (mTetheredNotification == null) {
|
|
mTetheredNotification = new Notification();
|
|
mTetheredNotification.when = 0;
|
|
}
|
|
mTetheredNotification.icon = icon;
|
|
mTetheredNotification.defaults &= ~Notification.DEFAULT_SOUND;
|
|
mTetheredNotification.flags = Notification.FLAG_ONGOING_EVENT;
|
|
mTetheredNotification.tickerText = title;
|
|
mTetheredNotification.setLatestEventInfo(mContext, title, message, pi);
|
|
|
|
notificationManager.notifyAsUser(null, mTetheredNotification.icon,
|
|
mTetheredNotification, UserHandle.ALL);
|
|
}
|
|
|
|
private void clearTetheredNotification() {
|
|
NotificationManager notificationManager =
|
|
(NotificationManager)mContext.getSystemService(Context.NOTIFICATION_SERVICE);
|
|
if (notificationManager != null && mTetheredNotification != null) {
|
|
notificationManager.cancelAsUser(null, mTetheredNotification.icon,
|
|
UserHandle.ALL);
|
|
mTetheredNotification = null;
|
|
}
|
|
}
|
|
|
|
private class StateReceiver extends BroadcastReceiver {
|
|
public void onReceive(Context content, Intent intent) {
|
|
String action = intent.getAction();
|
|
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) {
|
|
tetherUsb(true);
|
|
} else {
|
|
mUsbTetherRequested = true;
|
|
usbManager.setCurrentFunction(UsbManager.USB_FUNCTION_RNDIS, false);
|
|
}
|
|
} else {
|
|
tetherUsb(false);
|
|
if (mRndisEnabled) {
|
|
usbManager.setCurrentFunction(null, false);
|
|
}
|
|
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;
|
|
}
|
|
|
|
public void checkDunRequired() {
|
|
int secureSetting = Settings.Global.getInt(mContext.getContentResolver(),
|
|
Settings.Global.TETHER_DUN_REQUIRED, 2);
|
|
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[] getTetheredIfacePairs() {
|
|
final ArrayList<String> list = Lists.newArrayList();
|
|
synchronized (mPublicSync) {
|
|
for (TetherInterfaceSM sm : mIfaces.values()) {
|
|
if (sm.isTethered()) {
|
|
list.add(sm.mMyUpstreamIfaceName);
|
|
list.add(sm.mIfaceName);
|
|
}
|
|
}
|
|
}
|
|
return list.toArray(new String[list.size()]);
|
|
}
|
|
|
|
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[] 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;
|
|
}
|
|
|
|
//TODO: Temporary handling upstream change triggered without
|
|
// CONNECTIVITY_ACTION. Only to accomodate interface
|
|
// switch during HO.
|
|
// @see bug/4455071
|
|
public void handleTetherIfaceChange() {
|
|
mTetherMasterSM.sendMessage(TetherMasterSM.CMD_UPSTREAM_CHANGED);
|
|
}
|
|
|
|
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 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) {
|
|
if (DBG) 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 (DBG) 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) {
|
|
Log.e(TAG, "Error Tethering: " + e.toString());
|
|
setLastError(ConnectivityManager.TETHER_ERROR_TETHER_IFACE_ERROR);
|
|
|
|
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.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) {
|
|
if (DBG) 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:
|
|
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);
|
|
} catch (Exception e) {
|
|
Log.e(TAG, "Exception enabling Nat: " + e.toString());
|
|
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);
|
|
}
|
|
|
|
}
|
|
|
|
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;
|
|
|
|
// 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 mCurrentConnectionSequence;
|
|
private int mMobileApnReserved = ConnectivityManager.TYPE_NONE;
|
|
|
|
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<TetherInterfaceSM>();
|
|
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 String enableString(int apnType) {
|
|
switch (apnType) {
|
|
case ConnectivityManager.TYPE_MOBILE_DUN:
|
|
return Phone.FEATURE_ENABLE_DUN_ALWAYS;
|
|
case ConnectivityManager.TYPE_MOBILE:
|
|
case ConnectivityManager.TYPE_MOBILE_HIPRI:
|
|
return Phone.FEATURE_ENABLE_HIPRI;
|
|
}
|
|
return null;
|
|
}
|
|
protected boolean turnOnUpstreamMobileConnection(int apnType) {
|
|
boolean retValue = true;
|
|
if (apnType == ConnectivityManager.TYPE_NONE) return false;
|
|
if (apnType != mMobileApnReserved) turnOffUpstreamMobileConnection();
|
|
int result = PhoneConstants.APN_REQUEST_FAILED;
|
|
String enableString = enableString(apnType);
|
|
if (enableString == null) return false;
|
|
try {
|
|
result = mConnService.startUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
|
|
enableString, new Binder());
|
|
} catch (Exception e) {
|
|
}
|
|
switch (result) {
|
|
case PhoneConstants.APN_ALREADY_ACTIVE:
|
|
case PhoneConstants.APN_REQUEST_STARTED:
|
|
mMobileApnReserved = apnType;
|
|
Message m = obtainMessage(CMD_CELL_CONNECTION_RENEW);
|
|
m.arg1 = ++mCurrentConnectionSequence;
|
|
sendMessageDelayed(m, CELL_CONNECTION_RENEW_MS);
|
|
break;
|
|
case PhoneConstants.APN_REQUEST_FAILED:
|
|
default:
|
|
retValue = false;
|
|
break;
|
|
}
|
|
|
|
return retValue;
|
|
}
|
|
protected boolean turnOffUpstreamMobileConnection() {
|
|
// ignore pending renewal requests
|
|
++mCurrentConnectionSequence;
|
|
if (mMobileApnReserved != ConnectivityManager.TYPE_NONE) {
|
|
try {
|
|
mConnService.stopUsingNetworkFeature(ConnectivityManager.TYPE_MOBILE,
|
|
enableString(mMobileApnReserved));
|
|
} catch (Exception e) {
|
|
return false;
|
|
}
|
|
mMobileApnReserved = ConnectivityManager.TYPE_NONE;
|
|
}
|
|
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(mDefaultDnsServers);
|
|
} 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 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 = null;
|
|
try {
|
|
info = mConnService.getNetworkInfo(netType.intValue());
|
|
} catch (RemoteException e) { }
|
|
if ((info != null) && info.isConnected()) {
|
|
upType = netType.intValue();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (DBG) {
|
|
Log.d(TAG, "chooseUpstreamType(" + tryCell + "), preferredApn ="
|
|
+ mPreferredUpstreamMobileApn + ", got type=" + upType);
|
|
}
|
|
|
|
// if we're on DUN, put our own grab on it
|
|
if (upType == ConnectivityManager.TYPE_MOBILE_DUN ||
|
|
upType == ConnectivityManager.TYPE_MOBILE_HIPRI) {
|
|
turnOnUpstreamMobileConnection(upType);
|
|
} else if (upType != ConnectivityManager.TYPE_NONE) {
|
|
/* 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();
|
|
}
|
|
|
|
if (upType == ConnectivityManager.TYPE_NONE) {
|
|
boolean tryAgainLater = true;
|
|
if ((tryCell == TRY_TO_SETUP_MOBILE_CONNECTION) &&
|
|
(turnOnUpstreamMobileConnection(mPreferredUpstreamMobileApn) == true)) {
|
|
// we think mobile should be coming up - don't set a retry
|
|
tryAgainLater = false;
|
|
}
|
|
if (tryAgainLater) {
|
|
sendMessageDelayed(CMD_RETRY_UPSTREAM, UPSTREAM_SETTLE_TIME_MS);
|
|
}
|
|
} else {
|
|
LinkProperties linkProperties = null;
|
|
try {
|
|
linkProperties = mConnService.getLinkProperties(upType);
|
|
} catch (RemoteException e) { }
|
|
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) {
|
|
String[] dnsServers = mDefaultDnsServers;
|
|
Collection<InetAddress> dnses = linkProperties.getDnses();
|
|
if (dnses != null) {
|
|
// we currently only handle IPv4
|
|
ArrayList<InetAddress> v4Dnses =
|
|
new ArrayList<InetAddress>(dnses.size());
|
|
for (InetAddress dnsAddress : dnses) {
|
|
if (dnsAddress instanceof Inet4Address) {
|
|
v4Dnses.add(dnsAddress);
|
|
}
|
|
}
|
|
if (v4Dnses.size() > 0) {
|
|
dnsServers = NetworkUtils.makeStrings(v4Dnses);
|
|
}
|
|
}
|
|
try {
|
|
mNMService.setDnsForwarders(dnsServers);
|
|
} catch (Exception e) {
|
|
transitionTo(mSetDnsForwardersErrorState);
|
|
}
|
|
}
|
|
}
|
|
notifyTetheredOfNewUpstreamIface(iface);
|
|
}
|
|
|
|
protected void notifyTetheredOfNewUpstreamIface(String ifaceName) {
|
|
if (DBG) Log.d(TAG, "notifying tethered with iface =" + ifaceName);
|
|
mUpstreamIfaceName = ifaceName;
|
|
for (TetherInterfaceSM sm : mNotifyList) {
|
|
sm.sendMessage(TetherInterfaceSM.CMD_TETHER_CONNECTION_CHANGED,
|
|
ifaceName);
|
|
}
|
|
}
|
|
}
|
|
|
|
class InitialState extends TetherMasterUtilState {
|
|
@Override
|
|
public void enter() {
|
|
}
|
|
@Override
|
|
public boolean processMessage(Message message) {
|
|
if (DBG) Log.d(TAG, "MasterInitialState.processMessage what=" + 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 = !WAIT_FOR_NETWORK_TO_SETTLE;
|
|
@Override
|
|
public void enter() {
|
|
turnOnMasterTetherSettings(); // may transition us out
|
|
|
|
mTryCell = !WAIT_FOR_NETWORK_TO_SETTLE; // better try something first pass
|
|
// or crazy tests cases will fail
|
|
chooseUpstreamType(mTryCell);
|
|
mTryCell = !mTryCell;
|
|
}
|
|
@Override
|
|
public void exit() {
|
|
turnOffUpstreamMobileConnection();
|
|
notifyTetheredOfNewUpstreamIface(null);
|
|
}
|
|
@Override
|
|
public boolean processMessage(Message message) {
|
|
if (DBG) Log.d(TAG, "TetherModeAliveState.processMessage what=" + 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,
|
|
mUpstreamIfaceName);
|
|
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 = !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 (VDBG) {
|
|
Log.d(TAG, "renewing mobile connection - requeuing for another " +
|
|
CELL_CONNECTION_RENEW_MS + "ms");
|
|
}
|
|
turnOnUpstreamMobileConnection(mMobileApnReserved);
|
|
}
|
|
break;
|
|
case CMD_RETRY_UPSTREAM:
|
|
chooseUpstreamType(mTryCell);
|
|
mTryCell = !mTryCell;
|
|
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;
|
|
}
|
|
|
|
synchronized (mPublicSync) {
|
|
pw.println("mUpstreamIfaceTypes: ");
|
|
for (Integer netType : mUpstreamIfaceTypes) {
|
|
pw.println(" " + netType);
|
|
}
|
|
|
|
pw.println();
|
|
pw.println("Tether state:");
|
|
for (Object o : mIfaces.values()) {
|
|
pw.println(" " + o);
|
|
}
|
|
}
|
|
pw.println();
|
|
return;
|
|
}
|
|
}
|