First pass at USB Tethering.
bug:2281900
diff --git a/core/java/android/net/ConnectivityManager.java b/core/java/android/net/ConnectivityManager.java
index 30799ec..d435df5 100644
--- a/core/java/android/net/ConnectivityManager.java
+++ b/core/java/android/net/ConnectivityManager.java
@@ -116,6 +116,24 @@
"android.net.conn.BACKGROUND_DATA_SETTING_CHANGED";
/**
+ * Broadcast Action: A tetherable connection has come or gone
+ * TODO - finish the doc
+ * @hide
+ */
+ public static final String ACTION_TETHER_STATE_CHANGED =
+ "android.net.conn.TETHER_STATE_CHANGED";
+
+ /**
+ * @hide
+ */
+ public static final String EXTRA_AVAILABLE_TETHER_COUNT = "availableCount";
+
+ /**
+ * @hide
+ */
+ public static final String EXTRA_ACTIVE_TETHER_COUNT = "activeCount";
+
+ /**
* The Default Mobile data connection. When active, all data traffic
* will use this connection by default. Should not coexist with other
* default connections.
@@ -338,4 +356,48 @@
}
mService = service;
}
+
+ /**
+ * {@hide}
+ */
+ public String[] getTetherableIfaces() {
+ try {
+ return mService.getTetherableIfaces();
+ } catch (RemoteException e) {
+ return new String[0];
+ }
+ }
+
+ /**
+ * {@hide}
+ */
+ public String[] getTetheredIfaces() {
+ try {
+ return mService.getTetheredIfaces();
+ } catch (RemoteException e) {
+ return new String[0];
+ }
+ }
+
+ /**
+ * {@hide}
+ */
+ public boolean tether(String iface) {
+ try {
+ return mService.tether(iface);
+ } catch (RemoteException e) {
+ return false;
+ }
+ }
+
+ /**
+ * {@hide}
+ */
+ public boolean untether(String iface) {
+ try {
+ return mService.untether(iface);
+ } catch (RemoteException e) {
+ return false;
+ }
+ }
}
diff --git a/core/java/android/net/IConnectivityManager.aidl b/core/java/android/net/IConnectivityManager.aidl
index 9f59cce..caa3f2b 100644
--- a/core/java/android/net/IConnectivityManager.aidl
+++ b/core/java/android/net/IConnectivityManager.aidl
@@ -50,4 +50,12 @@
boolean getBackgroundDataSetting();
void setBackgroundDataSetting(boolean allowBackgroundData);
+
+ boolean tether(String iface);
+
+ boolean untether(String iface);
+
+ String[] getTetherableIfaces();
+
+ String[] getTetheredIfaces();
}
diff --git a/core/java/android/os/INetworkManagementService.aidl b/core/java/android/os/INetworkManagementService.aidl
index e4ec098..f48f45f 100644
--- a/core/java/android/os/INetworkManagementService.aidl
+++ b/core/java/android/os/INetworkManagementService.aidl
@@ -140,7 +140,8 @@
* Attaches a PPP server daemon to the specified TTY with the specified
* local/remote addresses.
*/
- void attachPppd(String tty, String localAddr, String remoteAddr);
+ void attachPppd(String tty, String localAddr, String remoteAddr, String dns1Addr,
+ String dns2Addr);
/**
* Detaches a PPP server daemon from the specified TTY.
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 7128005..bacaf43 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -2944,6 +2944,13 @@
public static final String MOUNT_UMS_NOTIFY_ENABLED = "mount_ums_notify_enabled";
/**
+ * Whether or not a notification is displayed when a Tetherable interface is detected.
+ * (0 = false, 1 = true)
+ * @hide
+ */
+ public static final String TETHER_NOTIFY = "tether_notify";
+
+ /**
* If nonzero, ANRs in invisible background processes bring up a dialog.
* Otherwise, the process will be silently killed.
* @hide
diff --git a/core/java/com/android/internal/app/TetherActivity.java b/core/java/com/android/internal/app/TetherActivity.java
new file mode 100644
index 0000000..2b93dbc
--- /dev/null
+++ b/core/java/com/android/internal/app/TetherActivity.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2007 Google Inc.
+ *
+ * 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.internal.app;
+
+import android.app.AlertDialog;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.net.ConnectivityManager;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.IMountService;
+import android.os.Message;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.widget.Toast;
+import android.util.Log;
+
+/**
+ * This activity is shown to the user for him/her to connect/disconnect a Tether
+ * connection. It will display notification when a suitable connection is made
+ * to allow the tether to be setup. A second notification will be show when a
+ * tether is active, allowing the user to manage tethered connections.
+ */
+public class TetherActivity extends AlertActivity implements
+ DialogInterface.OnClickListener {
+
+ private static final int POSITIVE_BUTTON = AlertDialog.BUTTON1;
+
+ /* Used to detect when the USB cable is unplugged, so we can call finish() */
+ private BroadcastReceiver mTetherReceiver = new BroadcastReceiver() {
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ if (intent.getAction() == ConnectivityManager.ACTION_TETHER_STATE_CHANGED) {
+ handleTetherStateChanged(intent);
+ }
+ }
+ };
+
+ private boolean mWantTethering;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+
+ // determine if we advertise tethering or untethering
+ ConnectivityManager cm =
+ (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
+ if (cm.getTetheredIfaces().length > 0) {
+ mWantTethering = false;
+ } else if (cm.getTetherableIfaces().length > 0) {
+ mWantTethering = true;
+ } else {
+ finish();
+ return;
+ }
+
+ // Set up the "dialog"
+ if (mWantTethering == true) {
+ mAlertParams.mIconId = com.android.internal.R.drawable.ic_dialog_usb;
+ mAlertParams.mTitle = getString(com.android.internal.R.string.tether_title);
+ mAlertParams.mMessage = getString(com.android.internal.R.string.tether_message);
+ mAlertParams.mPositiveButtonText =
+ getString(com.android.internal.R.string.tether_button);
+ mAlertParams.mPositiveButtonListener = this;
+ mAlertParams.mNegativeButtonText =
+ getString(com.android.internal.R.string.tether_button_cancel);
+ mAlertParams.mNegativeButtonListener = this;
+ } else {
+ mAlertParams.mIconId = com.android.internal.R.drawable.ic_dialog_usb;
+ mAlertParams.mTitle = getString(com.android.internal.R.string.tether_stop_title);
+ mAlertParams.mMessage = getString(com.android.internal.R.string.tether_stop_message);
+ mAlertParams.mPositiveButtonText =
+ getString(com.android.internal.R.string.tether_stop_button);
+ mAlertParams.mPositiveButtonListener = this;
+ mAlertParams.mNegativeButtonText =
+ getString(com.android.internal.R.string.tether_stop_button_cancel);
+ mAlertParams.mNegativeButtonListener = this;
+ }
+ setupAlert();
+ }
+
+ @Override
+ protected void onResume() {
+ super.onResume();
+
+ registerReceiver(mTetherReceiver, new IntentFilter(
+ ConnectivityManager.ACTION_TETHER_STATE_CHANGED));
+ }
+
+ @Override
+ protected void onPause() {
+ super.onPause();
+
+ unregisterReceiver(mTetherReceiver);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void onClick(DialogInterface dialog, int which) {
+
+ if (which == POSITIVE_BUTTON) {
+ ConnectivityManager connManager =
+ (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
+ // start/stop tethering
+ if (mWantTethering) {
+ if (!connManager.tether("ppp0")) {
+ showTetheringError();
+ }
+ } else {
+ if (!connManager.untether("ppp0")) {
+ showUnTetheringError();
+ }
+ }
+ }
+ // No matter what, finish the activity
+ finish();
+ }
+
+ private void handleTetherStateChanged(Intent intent) {
+ finish();
+ }
+
+ private void showTetheringError() {
+ Toast.makeText(this, com.android.internal.R.string.tether_error_message,
+ Toast.LENGTH_LONG).show();
+ }
+
+ private void showUnTetheringError() {
+ Toast.makeText(this, com.android.internal.R.string.tether_stop_error_message,
+ Toast.LENGTH_LONG).show();
+ }
+
+}
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 665088a..1406b66 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -1239,6 +1239,10 @@
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
+ <activity android:name="com.android.internal.app.TetherActivity"
+ android:theme="@style/Theme.Dialog.Alert"
+ android:excludeFromRecents="true">
+ </activity>
<activity android:name="com.android.internal.app.UsbStorageActivity"
android:excludeFromRecents="true">
</activity>
diff --git a/core/res/res/drawable-hdpi/stat_sys_tether_active.png b/core/res/res/drawable-hdpi/stat_sys_tether_active.png
new file mode 100755
index 0000000..4c14c07
--- /dev/null
+++ b/core/res/res/drawable-hdpi/stat_sys_tether_active.png
Binary files differ
diff --git a/core/res/res/drawable-hdpi/stat_sys_tether_usb.png b/core/res/res/drawable-hdpi/stat_sys_tether_usb.png
new file mode 100755
index 0000000..4c14c07
--- /dev/null
+++ b/core/res/res/drawable-hdpi/stat_sys_tether_usb.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/stat_sys_tether_active.png b/core/res/res/drawable-mdpi/stat_sys_tether_active.png
new file mode 100644
index 0000000..2d0da4c
--- /dev/null
+++ b/core/res/res/drawable-mdpi/stat_sys_tether_active.png
Binary files differ
diff --git a/core/res/res/drawable-mdpi/stat_sys_tether_usb.png b/core/res/res/drawable-mdpi/stat_sys_tether_usb.png
new file mode 100644
index 0000000..2d0da4c
--- /dev/null
+++ b/core/res/res/drawable-mdpi/stat_sys_tether_usb.png
Binary files differ
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 30d0da7..d1bfc68 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -1078,7 +1078,13 @@
<string name="permlab_changeNetworkState">change network connectivity</string>
<!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
<string name="permdesc_changeNetworkState">Allows an application to change
- the state network connectivity.</string>
+ the state of network connectivity.</string>
+
+ <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
+ <string name="permlab_changeTetherState">change tethered connectivity</string>
+ <!-- Description of an application permission, listed so the user can choose whether they want to allow the applicaiton to do this. -->
+ <string name="permdesc_changeTetherState">Allows an application to change
+ the state of tethered network connectivity.</string>
<!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
<string name="permlab_changeBackgroundDataSetting">change background data usage setting</string>
@@ -2200,4 +2206,40 @@
Used by AccessibilityService to announce the purpose of the view.
-->
<string name="description_star">favorite</string>
+
+
+ <!-- Strings for Tethering dialogs -->
+ <!-- This is the label for the activity, and should never be visible to the user. -->
+ <!-- See TETHERING. TETHERING_DIALOG: After the user selects the notification, a dialog is shown asking if he wants to Tether. This is the title. -->
+ <string name="tether_title">USB tethering available</string>
+ <!-- See TETHER. This is the message. -->
+ <string name="tether_message">Select \"Tether\" if you want to share your phone\'s data connection with your computer.</string>
+ <!-- See TETHER. This is the button text to Tether the computer with the phone. -->
+ <string name="tether_button">Tether</string>
+ <!-- See TETHER. This is the button text to ignore the plugging in of the phone.. -->
+ <string name="tether_button_cancel">Cancel</string>
+ <!-- See TETHER. If there was an error mounting, this is the text. -->
+ <string name="tether_error_message">There is a problem tethering.</string>
+ <!-- TETHER: When the user connects the phone to a computer, we show a notification asking if he wants to share his cellular network connection. This is the title -->
+ <string name="tether_available_notification_title">USB tethering available</string>
+ <!-- See USB_STORAGE. This is the message. -->
+ <string name="tether_available_notification_message">Select to tether your computer to your phone.</string>
+ <!-- TETHER_STOP: While TETHER is enabled, we show a notification dialog asking if he wants to stop. This is the title -->
+ <string name="tether_stop_notification_title">Untether</string>
+ <!-- See TETHER. This is the message. -->
+ <string name="tether_stop_notification_message">Select to untether your computer.</string>
+
+ <!-- TETHER stop dialog strings -->
+ <!-- This is the label for the activity, and should never be visible to the user. -->
+ <!-- See TETHER_STOP. TETHER_STOP_DIALOG: After the user selects the notification, a dialog is shown asking if he wants to stop tethering. This is the title. -->
+ <string name="tether_stop_title">Disconnect tethering</string>
+ <!-- See TETHER_STOP. This is the message. -->
+ <string name="tether_stop_message">You have been sharing your phone\'s cellular data connection with your computer. Select \"Disconnect\" to disconnect USB tethering.</string>
+ <!-- See TETHER_STOP. This is the button text to disconnect tethering. -->
+ <string name="tether_stop_button">Disconnect</string>
+ <!-- See TETHER_STOP. This is the button text to cancel disconnecting the tether. -->
+ <string name="tether_stop_button_cancel">Cancel</string>
+ <!-- See TETHER_STOP_DIALOG. If there was an error disconnect, this is the text. -->
+ <string name="tether_stop_error_message">We\'ve encountered a problem turning off Tethering. Please try again.</string>
+
</resources>
diff --git a/services/java/com/android/server/ConnectivityService.java b/services/java/com/android/server/ConnectivityService.java
index aa4956f..4259016 100644
--- a/services/java/com/android/server/ConnectivityService.java
+++ b/services/java/com/android/server/ConnectivityService.java
@@ -43,6 +43,8 @@
import com.android.internal.telephony.Phone;
+import com.android.server.connectivity.Tethering;
+
import java.io.FileDescriptor;
import java.io.PrintWriter;
import java.util.ArrayList;
@@ -62,6 +64,9 @@
private static final String NETWORK_RESTORE_DELAY_PROP_NAME =
"android.telephony.apn-restore";
+
+ private Tethering mTethering;
+
/**
* Sometimes we want to refer to the individual network state
* trackers separately, and sometimes we just want to treat them
@@ -308,6 +313,8 @@
continue;
}
}
+
+ mTethering = new Tethering(mContext);
}
@@ -784,6 +791,13 @@
"ConnectivityService");
}
+ // TODO Make this a special check when it goes public
+ private void enforceTetherChangePermission() {
+ mContext.enforceCallingOrSelfPermission(
+ android.Manifest.permission.CHANGE_NETWORK_STATE,
+ "ConnectivityService");
+ }
+
/**
* Handle a {@code DISCONNECTED} event. If this pertains to the non-active
* network, we ignore it. If it is for the active network, we send out a
@@ -1368,4 +1382,28 @@
}
}
}
+
+ // javadoc from interface
+ public boolean tether(String iface) {
+ enforceTetherChangePermission();
+ return mTethering.tether(iface);
+ }
+
+ // javadoc from interface
+ public boolean untether(String iface) {
+ enforceTetherChangePermission();
+ return mTethering.untether(iface);
+ }
+
+ // TODO - move iface listing, queries, etc to new module
+ // javadoc from interface
+ public String[] getTetherableIfaces() {
+ enforceAccessPermission();
+ return mTethering.getTetherableIfaces();
+ }
+
+ public String[] getTetheredIfaces() {
+ enforceAccessPermission();
+ return mTethering.getTetheredIfaces();
+ }
}
diff --git a/services/java/com/android/server/NetworkManagementService.java b/services/java/com/android/server/NetworkManagementService.java
index b34b50a..d41aacf 100644
--- a/services/java/com/android/server/NetworkManagementService.java
+++ b/services/java/com/android/server/NetworkManagementService.java
@@ -334,9 +334,9 @@
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService");
try {
- String cmd = "tether dns set ";
+ String cmd = "tether dns set";
for (String s : dns) {
- cmd += InetAddress.getByName(s).toString() + " ";
+ cmd += " " + InetAddress.getByName(s).getHostAddress();
}
mConnector.doCommand(cmd);
} catch (UnknownHostException e) {
@@ -373,14 +373,16 @@
return mConnector.doListCommand("list_ttys", NetdResponseCode.TtyListResult);
}
- public void attachPppd(String tty, String localAddr, String remoteAddr)
- throws IllegalStateException {
+ public void attachPppd(String tty, String localAddr, String remoteAddr, String dns1Addr,
+ String dns2Addr) throws IllegalStateException {
try {
mContext.enforceCallingOrSelfPermission(
android.Manifest.permission.CHANGE_NETWORK_STATE, "NetworkManagementService");
- mConnector.doCommand(String.format("pppd attach %s %s %s", tty,
- InetAddress.getByName(localAddr).toString(),
- InetAddress.getByName(localAddr).toString()));
+ mConnector.doCommand(String.format("pppd attach %s %s %s %s %s", tty,
+ InetAddress.getByName(localAddr).getHostAddress(),
+ InetAddress.getByName(remoteAddr).getHostAddress(),
+ InetAddress.getByName(dns1Addr).getHostAddress(),
+ InetAddress.getByName(dns2Addr).getHostAddress()));
} catch (UnknownHostException e) {
throw new IllegalStateException("Error resolving addr", e);
}
@@ -392,4 +394,3 @@
mConnector.doCommand(String.format("pppd detach %s", tty));
}
}
-
diff --git a/services/java/com/android/server/connectivity/Tethering.java b/services/java/com/android/server/connectivity/Tethering.java
new file mode 100644
index 0000000..f685383
--- /dev/null
+++ b/services/java/com/android/server/connectivity/Tethering.java
@@ -0,0 +1,483 @@
+/*
+ * 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.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.res.Resources;
+import android.net.ConnectivityManager;
+import android.net.INetworkManagementEventObserver;
+import android.os.IBinder;
+import android.os.INetworkManagementService;
+import android.os.RemoteException;
+import android.os.ServiceManager;
+import android.provider.Settings;
+import android.util.Log;
+
+import java.util.ArrayList;
+/**
+ * @hide
+ */
+public class Tethering extends INetworkManagementEventObserver.Stub {
+
+ private Notification mTetheringNotification;
+ private Context mContext;
+ private final String TAG = "Tethering";
+
+ private boolean mPlaySounds = false;
+
+ private ArrayList<String> mAvailableIfaces;
+ private ArrayList<String> mActiveIfaces;
+
+ private ArrayList<String> mActiveTtys;
+
+ private BroadcastReceiver mStateReceiver;
+
+ public Tethering(Context context) {
+ Log.d(TAG, "Tethering starting");
+ mContext = context;
+
+ // register for notifications from NetworkManagement Service
+ IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE);
+ INetworkManagementService service = INetworkManagementService.Stub.asInterface(b);
+ try {
+ service.registerObserver(this);
+ } catch (RemoteException e) {
+ Log.e(TAG, "Error registering observer :" + e);
+ }
+
+ mAvailableIfaces = new ArrayList<String>();
+ mActiveIfaces = new ArrayList<String>();
+ mActiveTtys = new ArrayList<String>();
+
+ // TODO - remove this hack after real USB connections are detected.
+ IntentFilter filter = new IntentFilter();
+ filter.addAction(Intent.ACTION_UMS_DISCONNECTED);
+ filter.addAction(Intent.ACTION_UMS_CONNECTED);
+ mStateReceiver = new UMSStateReceiver();
+ mContext.registerReceiver(mStateReceiver, filter);
+ }
+
+ public synchronized void interfaceLinkStatusChanged(String iface, boolean link) {
+ Log.d(TAG, "interfaceLinkStatusChanged " + iface + ", " + link);
+ }
+
+ public synchronized void interfaceAdded(String iface) {
+ if (mActiveIfaces.contains(iface)) {
+ Log.e(TAG, "active iface (" + iface + ") reported as added, ignoring");
+ return;
+ }
+ if (mAvailableIfaces.contains(iface)) {
+ Log.e(TAG, "available iface (" + iface + ") readded, ignoring");
+ return;
+ }
+ mAvailableIfaces.add(iface);
+ Log.d(TAG, "interfaceAdded :" + iface);
+ sendTetherStateChangedBroadcast();
+ }
+
+ public synchronized void interfaceRemoved(String iface) {
+ if (mActiveIfaces.contains(iface)) {
+ Log.d(TAG, "removed an active iface (" + iface + ")");
+ untether(iface);
+ }
+ if (mAvailableIfaces.contains(iface)) {
+ mAvailableIfaces.remove(iface);
+ Log.d(TAG, "interfaceRemoved " + iface);
+ sendTetherStateChangedBroadcast();
+ }
+ }
+
+ public synchronized boolean tether(String iface) {
+ Log.d(TAG, "Tethering " + iface);
+
+ if (!mAvailableIfaces.contains(iface)) {
+ Log.e(TAG, "Tried to Tether an unavailable iface :" + iface + ", ignoring");
+ return false;
+ }
+ if (mActiveIfaces.contains(iface)) {
+ Log.e(TAG, "Tried to Tether an already Tethered iface :" + iface + ", ignoring");
+ return false;
+ }
+
+ IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE);
+ INetworkManagementService service = INetworkManagementService.Stub.asInterface(b);
+
+ if (mActiveIfaces.size() == 0) {
+ try {
+ service.setIpForwardingEnabled(true);
+ } catch (Exception e) {
+ Log.e(TAG, "Error in setIpForwardingEnabled(true) :" + e);
+ return false;
+ }
+
+ try {
+ // TODO - don't hardcode this - though with non-conf values (un-routable)
+ // maybe it's not a big deal
+ service.startTethering("169.254.2.1", "169.254.2.64");
+ } catch (Exception e) {
+ Log.e(TAG, "Error in startTethering :" + e);
+ try {
+ service.setIpForwardingEnabled(false);
+ } catch (Exception ee) {}
+ return false;
+ }
+
+ try {
+ // TODO - maybe use the current connection's dns servers for this
+ String[] dns = new String[2];
+ dns[0] = new String("8.8.8.8");
+ dns[1] = new String("4.2.2.2");
+ service.setDnsForwarders(dns);
+ } catch (Exception e) {
+ Log.e(TAG, "Error in setDnsForwarders :" + e);
+ try {
+ service.stopTethering();
+ } catch (Exception ee) {}
+ try {
+ service.setIpForwardingEnabled(false);
+ } catch (Exception ee) {}
+ }
+ }
+
+ try {
+ service.tetherInterface(iface);
+ } catch (Exception e) {
+ Log.e(TAG, "Error in tetherInterface :" + e);
+ if (mActiveIfaces.size() == 0) {
+ try {
+ service.stopTethering();
+ } catch (Exception ee) {}
+ try {
+ service.setIpForwardingEnabled(false);
+ } catch (Exception ee) {}
+ }
+ return false;
+ }
+
+ try {
+ // TODO - use the currently active external iface
+ service.enableNat (iface, "rmnet0");
+ } catch (Exception e) {
+ Log.e(TAG, "Error in enableNat :" + e);
+ try {
+ service.untetherInterface(iface);
+ } catch (Exception ee) {}
+ if (mActiveIfaces.size() == 0) {
+ try {
+ service.stopTethering();
+ } catch (Exception ee) {}
+ try {
+ service.setIpForwardingEnabled(false);
+ } catch (Exception ee) {}
+ }
+ return false;
+ }
+ mAvailableIfaces.remove(iface);
+ mActiveIfaces.add(iface);
+ Log.d(TAG, "Tethered " + iface);
+ sendTetherStateChangedBroadcast();
+ return true;
+ }
+
+ public synchronized boolean untether(String iface) {
+ Log.d(TAG, "Untethering " + iface);
+
+ if (mAvailableIfaces.contains(iface)) {
+ Log.e(TAG, "Tried to Untether an available iface :" + iface);
+ return false;
+ }
+ if (!mActiveIfaces.contains(iface)) {
+ Log.e(TAG, "Tried to Untether an inactive iface :" + iface);
+ return false;
+ }
+
+ IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE);
+ INetworkManagementService service = INetworkManagementService.Stub.asInterface(b);
+
+ // none of these errors are recoverable - ie, multiple calls won't help
+ // and the user can't do anything. Basically a reboot is required and probably
+ // the device is misconfigured or something bad has happend.
+ // Because of this, we should try to unroll as much state as we can.
+ try {
+ service.disableNat(iface, "rmnet0");
+ } catch (Exception e) {
+ Log.e(TAG, "Error in disableNat :" + e);
+ }
+ try {
+ service.untetherInterface(iface);
+ } catch (Exception e) {
+ Log.e(TAG, "Error untethering " + iface + ", :" + e);
+ }
+ mActiveIfaces.remove(iface);
+ mAvailableIfaces.add(iface);
+
+ if (mActiveIfaces.size() == 0) {
+ Log.d(TAG, "no active tethers - turning down dhcp/ipforward");
+ try {
+ service.stopTethering();
+ } catch (Exception e) {
+ Log.e(TAG, "Error in stopTethering :" + e);
+ }
+ try {
+ service.setIpForwardingEnabled(false);
+ } catch (Exception e) {
+ Log.e(TAG, "Error in setIpForwardingEnabled(false) :" + e);
+ }
+ }
+ sendTetherStateChangedBroadcast();
+ Log.d(TAG, "Untethered " + iface);
+ return true;
+ }
+
+ private void sendTetherStateChangedBroadcast() {
+ Intent broadcast = new Intent(ConnectivityManager.ACTION_TETHER_STATE_CHANGED);
+ broadcast.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING);
+ broadcast.putExtra(ConnectivityManager.EXTRA_AVAILABLE_TETHER_COUNT,
+ mAvailableIfaces.size());
+ broadcast.putExtra(ConnectivityManager.EXTRA_ACTIVE_TETHER_COUNT, mActiveIfaces.size());
+ mContext.sendBroadcast(broadcast);
+
+ // for USB we only have the one, so don't have to deal with additional
+ if (mAvailableIfaces.size() > 0) {
+ // Check if the user wants to be bothered
+ boolean tellUser = (Settings.Secure.getInt(mContext.getContentResolver(),
+ Settings.Secure.TETHER_NOTIFY, 0) == 1);
+
+ if (tellUser) {
+ showTetherAvailableNotification();
+ }
+ } else if (mActiveIfaces.size() > 0) {
+ showTetheredNotification();
+ } else {
+ clearNotification();
+ }
+ }
+
+ private void showTetherAvailableNotification() {
+ NotificationManager notificationManager = (NotificationManager)mContext.
+ getSystemService(Context.NOTIFICATION_SERVICE);
+ if (notificationManager == null) {
+ return;
+ }
+
+ Intent intent = new Intent();
+ intent.setClass(mContext, com.android.internal.app.TetherActivity.class);
+
+ intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+ PendingIntent pi = PendingIntent.getActivity(mContext, 0, intent, 0);
+
+ Resources r = Resources.getSystem();
+ CharSequence title = r.getText(com.android.internal.R.string.
+ tether_available_notification_title);
+ CharSequence message = r.getText(com.android.internal.R.string.
+ tether_available_notification_message);
+
+ if(mTetheringNotification == null) {
+ mTetheringNotification = new Notification();
+ mTetheringNotification.when = 0;
+ }
+ mTetheringNotification.icon = com.android.internal.R.drawable.stat_sys_tether_usb;
+
+ boolean playSounds = false;
+ //playSounds = SystemProperties.get("persist.service.mount.playsnd", "1").equals("1");
+ if (playSounds) {
+ mTetheringNotification.defaults |= Notification.DEFAULT_SOUND;
+ } else {
+ mTetheringNotification.defaults &= ~Notification.DEFAULT_SOUND;
+ }
+
+ mTetheringNotification.flags = Notification.FLAG_ONGOING_EVENT;
+ mTetheringNotification.tickerText = title;
+ mTetheringNotification.setLatestEventInfo(mContext, title, message, pi);
+
+ notificationManager.notify(mTetheringNotification.icon, mTetheringNotification);
+
+ }
+
+ private void showTetheredNotification() {
+ NotificationManager notificationManager = (NotificationManager)mContext.
+ getSystemService(Context.NOTIFICATION_SERVICE);
+ if (notificationManager == null) {
+ return;
+ }
+
+ Intent intent = new Intent();
+ intent.setClass(mContext, com.android.internal.app.TetherActivity.class);
+
+ intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+ PendingIntent pi = PendingIntent.getActivity(mContext, 0, intent, 0);
+
+ Resources r = Resources.getSystem();
+ CharSequence title = r.getText(com.android.internal.R.string.
+ tether_stop_notification_title);
+ CharSequence message = r.getText(com.android.internal.R.string.
+ tether_stop_notification_message);
+
+ if(mTetheringNotification == null) {
+ mTetheringNotification = new Notification();
+ mTetheringNotification.when = 0;
+ }
+ mTetheringNotification.icon = com.android.internal.R.drawable.stat_sys_tether_usb;
+
+ boolean playSounds = false;
+ //playSounds = SystemProperties.get("persist.service.mount.playsnd", "1").equals("1");
+ if (playSounds) {
+ mTetheringNotification.defaults |= Notification.DEFAULT_SOUND;
+ } else {
+ mTetheringNotification.defaults &= ~Notification.DEFAULT_SOUND;
+ }
+
+ mTetheringNotification.flags = Notification.FLAG_ONGOING_EVENT;
+ mTetheringNotification.tickerText = title;
+ mTetheringNotification.setLatestEventInfo(mContext, title, message, pi);
+
+ notificationManager.notify(mTetheringNotification.icon, mTetheringNotification);
+ }
+
+ private void clearNotification() {
+ NotificationManager notificationManager = (NotificationManager)mContext.
+ getSystemService(Context.NOTIFICATION_SERVICE);
+ if (notificationManager != null && mTetheringNotification != null) {
+ notificationManager.cancel(mTetheringNotification.icon);
+ mTetheringNotification = null;
+ }
+ }
+
+
+
+
+// TODO - remove this hack after we get proper USB detection
+ private class UMSStateReceiver extends BroadcastReceiver {
+ public void onReceive(Context content, Intent intent) {
+ if (intent.getAction().equals(Intent.ACTION_UMS_CONNECTED)) {
+ Tethering.this.handleTtyConnect();
+ } else if (intent.getAction().equals(Intent.ACTION_UMS_DISCONNECTED)) {
+ Tethering.this.handleTtyDisconnect();
+ }
+ }
+ }
+
+ private synchronized void handleTtyConnect() {
+ Log.d(TAG, "handleTtyConnect");
+ // for each of the available Tty not already supported by a ppp session,
+ // create a ppp session
+ // TODO - this should be data-driven rather than hard coded.
+ String[] allowedTtys = new String[1];
+ allowedTtys[0] = new String("ttyGS0");
+
+ IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE);
+ INetworkManagementService service = INetworkManagementService.Stub.asInterface(b);
+
+ String[] availableTtys;
+ try {
+ availableTtys = service.listTtys();
+ } catch (RemoteException e) {
+ Log.e(TAG, "error listing Ttys :" + e);
+ return;
+ }
+
+ for (String tty : availableTtys) {
+ for (String pattern : allowedTtys) {
+ if (tty.matches(pattern)) {
+ synchronized (this) {
+ if (!mActiveTtys.contains(tty)) {
+ // TODO - don't hardcode this
+ try {
+ // local, remote, dns
+ service.attachPppd(tty, "169.254.1.128", "169.254.1.1",
+ "169.254.1.128", "0.0.0.0");
+ } catch (Exception e) {
+ Log.e(TAG, "error calling attachPppd: " + e);
+ return;
+ }
+ Log.d(TAG, "started Pppd on tty " + tty);
+ mActiveTtys.add(tty);
+ // TODO - remove this after we detect the new iface
+ interfaceAdded("ppp0");
+ }
+ }
+ }
+ }
+ }
+ }
+
+ private synchronized void handleTtyDisconnect() {
+ Log.d(TAG, "handleTtyDisconnect");
+
+ // TODO - this should be data-driven rather than hard coded.
+ String[] allowedTtys = new String[1];
+ allowedTtys[0] = new String("ttyGS0");
+
+ IBinder b = ServiceManager.getService(Context.NETWORKMANAGEMENT_SERVICE);
+ INetworkManagementService service = INetworkManagementService.Stub.asInterface(b);
+
+ String[] availableTtys;
+ try {
+ availableTtys = service.listTtys();
+ } catch (RemoteException e) {
+ Log.e(TAG, "error listing Ttys :" + e);
+ return;
+ }
+
+ for (String tty : availableTtys) {
+ for (String pattern : allowedTtys) {
+ if (tty.matches(pattern)) {
+ synchronized (this) {
+ if (mActiveTtys.contains(tty)) {
+ try {
+ service.detachPppd(tty);
+ } catch (Exception e) {
+ Log.e(TAG, "error calling detachPppd on " + tty + " :" + e);
+ }
+ mActiveTtys.remove(tty);
+ // TODO - remove this after we detect the new iface
+ interfaceRemoved("ppp0");
+ return;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ public synchronized String[] getTetheredIfaces() {
+ int size = mActiveIfaces.size();
+ String[] result = new String[size];
+ size -= 1;
+ for (int i=0; i< size; i++) {
+ result[i] = mActiveIfaces.get(i);
+ }
+ return result;
+ }
+
+ public synchronized String[] getTetherableIfaces() {
+ int size = mAvailableIfaces.size();
+ String[] result = new String[size];
+ size -= 1;
+ for (int i=0; i< size; i++) {
+ result[i] = mActiveIfaces.get(i);
+ }
+ return result;
+ }
+}
