/*
* Copyright (C) 2006 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.internal.telephony;
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.SharedPreferences;
import android.database.ContentObserver;
import android.net.LinkCapabilities;
import android.net.LinkProperties;
import android.net.NetworkInfo;
import android.net.TrafficStats;
import android.net.wifi.WifiManager;
import android.os.AsyncResult;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Messenger;
import android.os.SystemClock;
import android.os.SystemProperties;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;
import android.telephony.ServiceState;
import android.text.TextUtils;
import android.util.Log;
import com.android.internal.R;
import com.android.internal.telephony.DataConnection.FailCause;
import com.android.internal.util.AsyncChannel;
import com.android.internal.util.Protocol;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicInteger;
/**
* {@hide}
*/
public abstract class DataConnectionTracker extends Handler {
protected static final boolean DBG = true;
protected static final boolean VDBG = false;
/**
* IDLE: ready to start data connection setup, default state
* INITING: state of issued setupDefaultPDP() but not finish yet
* CONNECTING: state of issued startPppd() but not finish yet
* SCANNING: data connection fails with one apn but other apns are available
* ready to start data connection on other apns (before INITING)
* CONNECTED: IP connection is setup
* DISCONNECTING: Connection.disconnect() has been called, but PDP
* context is not yet deactivated
* FAILED: data connection fail for all apns settings
*
* getDataConnectionState() maps State to DataState
* FAILED or IDLE : DISCONNECTED
* INITING or CONNECTING or SCANNING: CONNECTING
* CONNECTED : CONNECTED or DISCONNECTING
*/
public enum State {
IDLE,
INITING,
CONNECTING,
SCANNING,
CONNECTED,
DISCONNECTING,
FAILED
}
public enum Activity {
NONE,
DATAIN,
DATAOUT,
DATAINANDOUT,
DORMANT
}
public static String ACTION_DATA_CONNECTION_TRACKER_MESSENGER =
"com.android.internal.telephony";
public static String EXTRA_MESSENGER = "EXTRA_MESSENGER";
/***** Event Codes *****/
protected static final int BASE = Protocol.BASE_DATA_CONNECTION_TRACKER;
protected static final int EVENT_DATA_SETUP_COMPLETE = BASE + 0;
protected static final int EVENT_RADIO_AVAILABLE = BASE + 1;
protected static final int EVENT_RECORDS_LOADED = BASE + 2;
protected static final int EVENT_TRY_SETUP_DATA = BASE + 3;
protected static final int EVENT_DATA_STATE_CHANGED = BASE + 4;
protected static final int EVENT_POLL_PDP = BASE + 5;
protected static final int EVENT_RADIO_OFF_OR_NOT_AVAILABLE = BASE + 6;
protected static final int EVENT_VOICE_CALL_STARTED = BASE + 7;
protected static final int EVENT_VOICE_CALL_ENDED = BASE + 8;
protected static final int EVENT_DATA_CONNECTION_DETACHED = BASE + 9;
protected static final int EVENT_LINK_STATE_CHANGED = BASE + 10;
protected static final int EVENT_ROAMING_ON = BASE + 11;
protected static final int EVENT_ROAMING_OFF = BASE + 12;
protected static final int EVENT_ENABLE_NEW_APN = BASE + 13;
protected static final int EVENT_RESTORE_DEFAULT_APN = BASE + 14;
protected static final int EVENT_DISCONNECT_DONE = BASE + 15;
protected static final int EVENT_DATA_CONNECTION_ATTACHED = BASE + 16;
protected static final int EVENT_DATA_STALL_ALARM = BASE + 17;
protected static final int EVENT_DO_RECOVERY = BASE + 18;
protected static final int EVENT_APN_CHANGED = BASE + 19;
protected static final int EVENT_CDMA_DATA_DETACHED = BASE + 20;
protected static final int EVENT_NV_READY = BASE + 21;
protected static final int EVENT_PS_RESTRICT_ENABLED = BASE + 22;
protected static final int EVENT_PS_RESTRICT_DISABLED = BASE + 23;
public static final int EVENT_CLEAN_UP_CONNECTION = BASE + 24;
protected static final int EVENT_CDMA_OTA_PROVISION = BASE + 25;
protected static final int EVENT_RESTART_RADIO = BASE + 26;
protected static final int EVENT_SET_INTERNAL_DATA_ENABLE = BASE + 27;
protected static final int EVENT_RESET_DONE = BASE + 28;
public static final int CMD_SET_USER_DATA_ENABLE = BASE + 29;
public static final int EVENT_CLEAN_UP_ALL_CONNECTIONS = BASE + 30;
public static final int CMD_SET_DEPENDENCY_MET = BASE + 31;
public static final int CMD_SET_POLICY_DATA_ENABLE = BASE + 32;
/***** Constants *****/
protected static final int APN_INVALID_ID = -1;
protected static final int APN_DEFAULT_ID = 0;
protected static final int APN_MMS_ID = 1;
protected static final int APN_SUPL_ID = 2;
protected static final int APN_DUN_ID = 3;
protected static final int APN_HIPRI_ID = 4;
protected static final int APN_IMS_ID = 5;
protected static final int APN_FOTA_ID = 6;
protected static final int APN_CBS_ID = 7;
protected static final int APN_NUM_TYPES = 8;
public static final int DISABLED = 0;
public static final int ENABLED = 1;
public static final String APN_TYPE_KEY = "apnType";
/** Delay between APN attempts.
Note the property override mechanism is there just for testing purpose only. */
protected static final int APN_DELAY_MILLIS =
SystemProperties.getInt("persist.radio.apn_delay", 5000);
protected Object mDataEnabledLock = new Object();
// responds to the setInternalDataEnabled call - used internally to turn off data
// for example during emergency calls
protected boolean mInternalDataEnabled = true;
// responds to public (user) API to enable/disable data use
// independent of mInternalDataEnabled and requests for APN access
// persisted
protected boolean mUserDataEnabled = true;
// TODO: move away from static state once 5587429 is fixed.
protected static boolean sPolicyDataEnabled = true;
private boolean[] dataEnabled = new boolean[APN_NUM_TYPES];
private int enabledCount = 0;
/* Currently requested APN type (TODO: This should probably be a parameter not a member) */
protected String mRequestedApnType = Phone.APN_TYPE_DEFAULT;
/** Retry configuration: A doubling of retry times from 5secs to 30minutes */
protected static final String DEFAULT_DATA_RETRY_CONFIG = "default_randomization=2000,"
+ "5000,10000,20000,40000,80000:5000,160000:5000,"
+ "320000:5000,640000:5000,1280000:5000,1800000:5000";
/** Retry configuration for secondary networks: 4 tries in 20 sec */
protected static final String SECONDARY_DATA_RETRY_CONFIG =
"max_retries=3, 5000, 5000, 5000";
/** Slow poll when attempting connection recovery. */
protected static final int POLL_NETSTAT_SLOW_MILLIS = 5000;
/** Default max failure count before attempting to network re-registration. */
protected static final int DEFAULT_MAX_PDP_RESET_FAIL = 3;
/**
* After detecting a potential connection problem, this is the max number
* of subsequent polls before attempting recovery.
*/
protected static final int NO_RECV_POLL_LIMIT = 24;
// 1 sec. default polling interval when screen is on.
protected static final int POLL_NETSTAT_MILLIS = 1000;
// 10 min. default polling interval when screen is off.
protected static final int POLL_NETSTAT_SCREEN_OFF_MILLIS = 1000*60*10;
// 2 min for round trip time
protected static final int POLL_LONGEST_RTT = 120 * 1000;
// Default sent packets without ack which triggers initial recovery steps
protected static final int NUMBER_SENT_PACKETS_OF_HANG = 10;
// how long to wait before switching back to default APN
protected static final int RESTORE_DEFAULT_APN_DELAY = 1 * 60 * 1000;
// system property that can override the above value
protected static final String APN_RESTORE_DELAY_PROP_NAME = "android.telephony.apn-restore";
// represents an invalid IP address
protected static final String NULL_IP = "0.0.0.0";
// Default for the data stall alarm while non-aggressive stall detection
protected static final int DATA_STALL_ALARM_NON_AGGRESSIVE_DELAY_IN_MS_DEFAULT = 1000 * 60 * 6;
// Default for the data stall alarm for aggressive stall detection
protected static final int DATA_STALL_ALARM_AGGRESSIVE_DELAY_IN_MS_DEFAULT = 1000 * 60;
// If attempt is less than this value we're doing first level recovery
protected static final int DATA_STALL_NO_RECV_POLL_LIMIT = 1;
// Tag for tracking stale alarms
protected static final String DATA_STALL_ALARM_TAG_EXTRA = "data.stall.alram.tag";
// TODO: See if we can remove INTENT_RECONNECT_ALARM
// having to have different values for GSM and
// CDMA. If so we can then remove the need for
// getActionIntentReconnectAlarm.
protected static final String INTENT_RECONNECT_ALARM_EXTRA_REASON = "reason";
// Used for debugging. Send the INTENT with an optional counter value with the number
// of times the setup is to fail before succeeding. If the counter isn't passed the
// setup will fail once. Example fail two times with FailCause.SIGNAL_LOST(-3)
// adb shell am broadcast \
// -a com.android.internal.telephony.dataconnectiontracker.intent_set_fail_data_setup_counter \
// --ei fail_data_setup_counter 3 --ei fail_data_setup_fail_cause -3
protected static final String INTENT_SET_FAIL_DATA_SETUP_COUNTER =
"com.android.internal.telephony.dataconnectiontracker.intent_set_fail_data_setup_counter";
protected static final String FAIL_DATA_SETUP_COUNTER = "fail_data_setup_counter";
protected int mFailDataSetupCounter = 0;
protected static final String FAIL_DATA_SETUP_FAIL_CAUSE = "fail_data_setup_fail_cause";
protected FailCause mFailDataSetupFailCause = FailCause.ERROR_UNSPECIFIED;
protected static final String DEFALUT_DATA_ON_BOOT_PROP = "net.def_data_on_boot";
// member variables
protected PhoneBase mPhone;
protected Activity mActivity = Activity.NONE;
protected State mState = State.IDLE;
protected Handler mDataConnectionTracker = null;
protected long mTxPkts;
protected long mRxPkts;
protected int mNetStatPollPeriod;
protected boolean mNetStatPollEnabled = false;
protected TxRxSum mDataStallTxRxSum = new TxRxSum(0, 0);
// Used to track stale data stall alarms.
protected int mDataStallAlarmTag = (int) SystemClock.elapsedRealtime();
// The current data stall alarm intent
protected PendingIntent mDataStallAlarmIntent = null;
// Number of packets sent since the last received packet
protected long mSentSinceLastRecv;
// Controls when a simple recovery attempt it to be tried
protected int mNoRecvPollCount = 0;
// wifi connection status will be updated by sticky intent
protected boolean mIsWifiConnected = false;
/** Intent sent when the reconnect alarm fires. */
protected PendingIntent mReconnectIntent = null;
/** CID of active data connection */
protected int mCidActive;
// When false we will not auto attach and manually attaching is required.
protected boolean mAutoAttachOnCreation = false;
// State of screen
// (TODO: Reconsider tying directly to screen, maybe this is
// really a lower power mode")
protected boolean mIsScreenOn = true;
/** Allows the generation of unique Id's for DataConnection objects */
protected AtomicInteger mUniqueIdGenerator = new AtomicInteger(0);
/** The data connections. */
protected HashMap<Integer, DataConnection> mDataConnections =
new HashMap<Integer, DataConnection>();
/** The data connection async channels */
protected HashMap<Integer, DataConnectionAc> mDataConnectionAsyncChannels =
new HashMap<Integer, DataConnectionAc>();
/** Convert an ApnType string to Id (TODO: Use "enumeration" instead of String for ApnType) */
protected HashMap<String, Integer> mApnToDataConnectionId =
new HashMap<String, Integer>();
/** Phone.APN_TYPE_* ===> ApnContext */
protected ConcurrentHashMap<String, ApnContext> mApnContexts;
/* Currently active APN */
protected ApnSetting mActiveApn;
/** allApns holds all apns */
protected ArrayList<ApnSetting> mAllApns = null;
/** preferred apn */
protected ApnSetting mPreferredApn = null;
/** Is packet service restricted by network */
protected boolean mIsPsRestricted = false;
/* Once disposed dont handle any messages */
protected boolean mIsDisposed = false;
protected BroadcastReceiver mIntentReceiver = new BroadcastReceiver ()
{
@Override
public void onReceive(Context context, Intent intent)
{
String action = intent.getAction();
if (DBG) log("onReceive: action=" + action);
if (action.equals(Intent.ACTION_SCREEN_ON)) {
mIsScreenOn = true;
stopNetStatPoll();
startNetStatPoll();
restartDataStallAlarm();
} else if (action.equals(Intent.ACTION_SCREEN_OFF)) {
mIsScreenOn = false;
stopNetStatPoll();
startNetStatPoll();
restartDataStallAlarm();
} else if (action.startsWith(getActionIntentReconnectAlarm())) {
log("Reconnect alarm. Previous state was " + mState);
onActionIntentReconnectAlarm(intent);
} else if (action.equals(getActionIntentDataStallAlarm())) {
onActionIntentDataStallAlarm(intent);
} else if (action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
final android.net.NetworkInfo networkInfo = (NetworkInfo)
intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
mIsWifiConnected = (networkInfo != null && networkInfo.isConnected());
} else if (action.equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {
final boolean enabled = intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,
WifiManager.WIFI_STATE_UNKNOWN) == WifiManager.WIFI_STATE_ENABLED;
if (!enabled) {
// when WiFi got disabled, the NETWORK_STATE_CHANGED_ACTION
// quit and won't report disconnected until next enabling.
mIsWifiConnected = false;
}
} else if (action.equals(INTENT_SET_FAIL_DATA_SETUP_COUNTER)) {
mFailDataSetupCounter = intent.getIntExtra(FAIL_DATA_SETUP_COUNTER, 1);
mFailDataSetupFailCause = FailCause.fromInt(
intent.getIntExtra(FAIL_DATA_SETUP_FAIL_CAUSE,
FailCause.ERROR_UNSPECIFIED.getErrorCode()));
if (DBG) log("set mFailDataSetupCounter=" + mFailDataSetupCounter +
" mFailDataSetupFailCause=" + mFailDataSetupFailCause);
}
}
};
private final DataRoamingSettingObserver mDataRoamingSettingObserver;
private class DataRoamingSettingObserver extends ContentObserver {
public DataRoamingSettingObserver(Handler handler) {
super(handler);
}
public void register(Context context) {
final ContentResolver resolver = context.getContentResolver();
resolver.registerContentObserver(
Settings.Secure.getUriFor(Settings.Secure.DATA_ROAMING), false, this);
}
public void unregister(Context context) {
final ContentResolver resolver = context.getContentResolver();
resolver.unregisterContentObserver(this);
}
@Override
public void onChange(boolean selfChange) {
// already running on mPhone handler thread
handleDataOnRoamingChange();
}
}
/**
* Maintian the sum of transmit and receive packets.
*
* The packet counts are initizlied and reset to -1 and
* remain -1 until they can be updated.
*/
public class TxRxSum {
public long txPkts;
public long rxPkts;
public TxRxSum() {
reset();
}
public TxRxSum(long txPkts, long rxPkts) {
this.txPkts = txPkts;
this.rxPkts = rxPkts;
}
public TxRxSum(TxRxSum sum) {
txPkts = sum.txPkts;
rxPkts = sum.rxPkts;
}
public void reset() {
txPkts = -1;
rxPkts = -1;
}
public String toString() {
return "{txSum=" + txPkts + " rxSum=" + rxPkts + "}";
}
public void updateTxRxSum() {
boolean txUpdated = false, rxUpdated = false;
long txSum = 0, rxSum = 0;
for (ApnContext apnContext : mApnContexts.values()) {
if (apnContext.getState() == State.CONNECTED) {
DataConnectionAc dcac = apnContext.getDataConnectionAc();
if (dcac == null) continue;
LinkProperties linkProp = dcac.getLinkPropertiesSync();
if (linkProp == null) continue;
String iface = linkProp.getInterfaceName();
if (iface != null) {
long stats = TrafficStats.getTxPackets(iface);
if (stats > 0) {
txUpdated = true;
txSum += stats;
}
stats = TrafficStats.getRxPackets(iface);
if (stats > 0) {
rxUpdated = true;
rxSum += stats;
}
}
}
}
if (txUpdated) this.txPkts = txSum;
if (rxUpdated) this.rxPkts = rxSum;
}
}
protected boolean isDataSetupCompleteOk(AsyncResult ar) {
if (ar.exception != null) {
if (DBG) log("isDataSetupCompleteOk return false, ar.result=" + ar.result);
return false;
}
if (mFailDataSetupCounter <= 0) {
if (DBG) log("isDataSetupCompleteOk return true");
return true;
}
ar.result = mFailDataSetupFailCause;
if (DBG) {
log("isDataSetupCompleteOk return false" +
" mFailDataSetupCounter=" + mFailDataSetupCounter +
" mFailDataSetupFailCause=" + mFailDataSetupFailCause);
}
mFailDataSetupCounter -= 1;
return false;
}
protected void onActionIntentReconnectAlarm(Intent intent) {
String reason = intent.getStringExtra(INTENT_RECONNECT_ALARM_EXTRA_REASON);
if (mState == State.FAILED) {
Message msg = obtainMessage(EVENT_CLEAN_UP_CONNECTION);
msg.arg1 = 0; // tearDown is false
msg.arg2 = 0;
msg.obj = reason;
sendMessage(msg);
}
sendMessage(obtainMessage(EVENT_TRY_SETUP_DATA));
}
protected void onActionIntentDataStallAlarm(Intent intent) {
if (VDBG) log("onActionIntentDataStallAlarm: action=" + intent.getAction());
Message msg = obtainMessage(EVENT_DATA_STALL_ALARM, intent.getAction());
msg.arg1 = intent.getIntExtra(DATA_STALL_ALARM_TAG_EXTRA, 0);
sendMessage(msg);
}
/**
* Default constructor
*/
protected DataConnectionTracker(PhoneBase phone) {
super();
mPhone = phone;
IntentFilter filter = new IntentFilter();
filter.addAction(getActionIntentReconnectAlarm());
filter.addAction(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
filter.addAction(INTENT_SET_FAIL_DATA_SETUP_COUNTER);
mUserDataEnabled = Settings.Secure.getInt(
mPhone.getContext().getContentResolver(), Settings.Secure.MOBILE_DATA, 1) == 1;
// TODO: Why is this registering the phone as the receiver of the intent
// and not its own handler?
mPhone.getContext().registerReceiver(mIntentReceiver, filter, null, mPhone);
// This preference tells us 1) initial condition for "dataEnabled",
// and 2) whether the RIL will setup the baseband to auto-PS attach.
dataEnabled[APN_DEFAULT_ID] = SystemProperties.getBoolean(DEFALUT_DATA_ON_BOOT_PROP,
true);
if (dataEnabled[APN_DEFAULT_ID]) {
enabledCount++;
}
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(mPhone.getContext());
mAutoAttachOnCreation = sp.getBoolean(PhoneBase.DATA_DISABLED_ON_BOOT_KEY, false);
// watch for changes to Settings.Secure.DATA_ROAMING
mDataRoamingSettingObserver = new DataRoamingSettingObserver(mPhone);
mDataRoamingSettingObserver.register(mPhone.getContext());
}
public void dispose() {
for (DataConnectionAc dcac : mDataConnectionAsyncChannels.values()) {
dcac.disconnect();
}
mDataConnectionAsyncChannels.clear();
mIsDisposed = true;
mPhone.getContext().unregisterReceiver(this.mIntentReceiver);
mDataRoamingSettingObserver.unregister(mPhone.getContext());
}
protected void broadcastMessenger() {
Intent intent = new Intent(ACTION_DATA_CONNECTION_TRACKER_MESSENGER);
intent.putExtra(EXTRA_MESSENGER, new Messenger(this));
mPhone.getContext().sendBroadcast(intent);
}
public Activity getActivity() {
return mActivity;
}
public boolean isApnTypeActive(String type) {
// TODO: support simultaneous with List instead
if (Phone.APN_TYPE_DUN.equals(type)) {
ApnSetting dunApn = fetchDunApn();
if (dunApn != null) {
return ((mActiveApn != null) && (dunApn.toString().equals(mActiveApn.toString())));
}
}
return mActiveApn != null && mActiveApn.canHandleType(type);
}
protected ApnSetting fetchDunApn() {
Context c = mPhone.getContext();
String apnData = Settings.Secure.getString(c.getContentResolver(),
Settings.Secure.TETHER_DUN_APN);
ApnSetting dunSetting = ApnSetting.fromString(apnData);
if (dunSetting != null) return dunSetting;
apnData = c.getResources().getString(R.string.config_tether_apndata);
return ApnSetting.fromString(apnData);
}
public String[] getActiveApnTypes() {
String[] result;
if (mActiveApn != null) {
result = mActiveApn.types;
} else {
result = new String[1];
result[0] = Phone.APN_TYPE_DEFAULT;
}
return result;
}
/** TODO: See if we can remove */
public String getActiveApnString(String apnType) {
String result = null;
if (mActiveApn != null) {
result = mActiveApn.apn;
}
return result;
}
/**
* Modify {@link Settings.Secure#DATA_ROAMING} value.
*/
public void setDataOnRoamingEnabled(boolean enabled) {
if (getDataOnRoamingEnabled() != enabled) {
final ContentResolver resolver = mPhone.getContext().getContentResolver();
Settings.Secure.putInt(resolver, Settings.Secure.DATA_ROAMING, enabled ? 1 : 0);
// will trigger handleDataOnRoamingChange() through observer
}
}
/**
* Return current {@link Settings.Secure#DATA_ROAMING} value.
*/
public boolean getDataOnRoamingEnabled() {
try {
final ContentResolver resolver = mPhone.getContext().getContentResolver();
return Settings.Secure.getInt(resolver, Settings.Secure.DATA_ROAMING) != 0;
} catch (SettingNotFoundException snfe) {
return false;
}
}
private void handleDataOnRoamingChange() {
if (mPhone.getServiceState().getRoaming()) {
if (getDataOnRoamingEnabled()) {
resetAllRetryCounts();
}
sendMessage(obtainMessage(EVENT_ROAMING_ON));
}
}
// abstract methods
protected abstract String getActionIntentReconnectAlarm();
protected abstract String getActionIntentDataStallAlarm();
protected abstract void startNetStatPoll();
protected abstract void stopNetStatPoll();
protected abstract void restartDataStallAlarm();
protected abstract void restartRadio();
protected abstract void log(String s);
protected abstract void loge(String s);
protected abstract boolean isDataAllowed();
protected abstract boolean isApnTypeAvailable(String type);
public abstract State getState(String apnType);
protected abstract void setState(State s);
protected abstract void gotoIdleAndNotifyDataConnection(String reason);
protected abstract boolean onTrySetupData(String reason);
protected abstract void onRoamingOff();
protected abstract void onRoamingOn();
protected abstract void onRadioAvailable();
protected abstract void onRadioOffOrNotAvailable();
protected abstract void onDataSetupComplete(AsyncResult ar);
protected abstract void onDisconnectDone(int connId, AsyncResult ar);
protected abstract void onVoiceCallStarted();
protected abstract void onVoiceCallEnded();
protected abstract void onCleanUpConnection(boolean tearDown, int apnId, String reason);
protected abstract void onCleanUpAllConnections(String cause);
protected abstract boolean isDataPossible(String apnType);
protected void onDataStallAlarm(int tag) {
loge("onDataStallAlarm: not impleted tag=" + tag);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case AsyncChannel.CMD_CHANNEL_DISCONNECTED: {
log("DISCONNECTED_CONNECTED: msg=" + msg);
DataConnectionAc dcac = (DataConnectionAc) msg.obj;
mDataConnectionAsyncChannels.remove(dcac.dataConnection.getDataConnectionId());
dcac.disconnected();
break;
}
case EVENT_ENABLE_NEW_APN:
onEnableApn(msg.arg1, msg.arg2);
break;
case EVENT_TRY_SETUP_DATA:
String reason = null;
if (msg.obj instanceof String) {
reason = (String) msg.obj;
}
onTrySetupData(reason);
break;
case EVENT_DATA_STALL_ALARM:
onDataStallAlarm(msg.arg1);
break;
case EVENT_ROAMING_OFF:
if (getDataOnRoamingEnabled() == false) {
resetAllRetryCounts();
}
onRoamingOff();
break;
case EVENT_ROAMING_ON:
onRoamingOn();
break;
case EVENT_RADIO_AVAILABLE:
onRadioAvailable();
break;
case EVENT_RADIO_OFF_OR_NOT_AVAILABLE:
onRadioOffOrNotAvailable();
break;
case EVENT_DATA_SETUP_COMPLETE:
mCidActive = msg.arg1;
onDataSetupComplete((AsyncResult) msg.obj);
break;
case EVENT_DISCONNECT_DONE:
log("DataConnectoinTracker.handleMessage: EVENT_DISCONNECT_DONE msg=" + msg);
onDisconnectDone(msg.arg1, (AsyncResult) msg.obj);
break;
case EVENT_VOICE_CALL_STARTED:
onVoiceCallStarted();
break;
case EVENT_VOICE_CALL_ENDED:
onVoiceCallEnded();
break;
case EVENT_CLEAN_UP_ALL_CONNECTIONS: {
onCleanUpAllConnections((String) msg.obj);
break;
}
case EVENT_CLEAN_UP_CONNECTION: {
boolean tearDown = (msg.arg1 == 0) ? false : true;
onCleanUpConnection(tearDown, msg.arg2, (String) msg.obj);
break;
}
case EVENT_SET_INTERNAL_DATA_ENABLE: {
boolean enabled = (msg.arg1 == ENABLED) ? true : false;
onSetInternalDataEnabled(enabled);
break;
}
case EVENT_RESET_DONE: {
if (DBG) log("EVENT_RESET_DONE");
onResetDone((AsyncResult) msg.obj);
break;
}
case CMD_SET_USER_DATA_ENABLE: {
final boolean enabled = (msg.arg1 == ENABLED) ? true : false;
if (DBG) log("CMD_SET_USER_DATA_ENABLE enabled=" + enabled);
onSetUserDataEnabled(enabled);
break;
}
case CMD_SET_DEPENDENCY_MET: {
boolean met = (msg.arg1 == ENABLED) ? true : false;
if (DBG) log("CMD_SET_DEPENDENCY_MET met=" + met);
Bundle bundle = msg.getData();
if (bundle != null) {
String apnType = (String)bundle.get(APN_TYPE_KEY);
if (apnType != null) {
onSetDependencyMet(apnType, met);
}
}
break;
}
case CMD_SET_POLICY_DATA_ENABLE: {
final boolean enabled = (msg.arg1 == ENABLED) ? true : false;
onSetPolicyDataEnabled(enabled);
break;
}
default:
Log.e("DATA", "Unidentified event msg=" + msg);
break;
}
}
/**
* Report on whether data connectivity is enabled
*
* @return {@code false} if data connectivity has been explicitly disabled,
* {@code true} otherwise.
*/
public boolean getAnyDataEnabled() {
final boolean result;
synchronized (mDataEnabledLock) {
result = (mInternalDataEnabled && mUserDataEnabled && sPolicyDataEnabled
&& (enabledCount != 0));
}
if (!result && DBG) log("getAnyDataEnabled " + result);
return result;
}
protected boolean isEmergency() {
final boolean result;
synchronized (mDataEnabledLock) {
result = mPhone.isInEcm() || mPhone.isInEmergencyCall();
}
log("isEmergency: result=" + result);
return result;
}
protected int apnTypeToId(String type) {
if (TextUtils.equals(type, Phone.APN_TYPE_DEFAULT)) {
return APN_DEFAULT_ID;
} else if (TextUtils.equals(type, Phone.APN_TYPE_MMS)) {
return APN_MMS_ID;
} else if (TextUtils.equals(type, Phone.APN_TYPE_SUPL)) {
return APN_SUPL_ID;
} else if (TextUtils.equals(type, Phone.APN_TYPE_DUN)) {
return APN_DUN_ID;
} else if (TextUtils.equals(type, Phone.APN_TYPE_HIPRI)) {
return APN_HIPRI_ID;
} else if (TextUtils.equals(type, Phone.APN_TYPE_IMS)) {
return APN_IMS_ID;
} else if (TextUtils.equals(type, Phone.APN_TYPE_FOTA)) {
return APN_FOTA_ID;
} else if (TextUtils.equals(type, Phone.APN_TYPE_CBS)) {
return APN_CBS_ID;
} else {
return APN_INVALID_ID;
}
}
protected String apnIdToType(int id) {
switch (id) {
case APN_DEFAULT_ID:
return Phone.APN_TYPE_DEFAULT;
case APN_MMS_ID:
return Phone.APN_TYPE_MMS;
case APN_SUPL_ID:
return Phone.APN_TYPE_SUPL;
case APN_DUN_ID:
return Phone.APN_TYPE_DUN;
case APN_HIPRI_ID:
return Phone.APN_TYPE_HIPRI;
case APN_IMS_ID:
return Phone.APN_TYPE_IMS;
case APN_FOTA_ID:
return Phone.APN_TYPE_FOTA;
case APN_CBS_ID:
return Phone.APN_TYPE_CBS;
default:
log("Unknown id (" + id + ") in apnIdToType");
return Phone.APN_TYPE_DEFAULT;
}
}
protected LinkProperties getLinkProperties(String apnType) {
int id = apnTypeToId(apnType);
if (isApnIdEnabled(id)) {
// TODO - remove this cdma-only hack and support multiple DCs.
DataConnectionAc dcac = mDataConnectionAsyncChannels.get(0);
return dcac.getLinkPropertiesSync();
} else {
return new LinkProperties();
}
}
protected LinkCapabilities getLinkCapabilities(String apnType) {
int id = apnTypeToId(apnType);
if (isApnIdEnabled(id)) {
// TODO - remove this cdma-only hack and support multiple DCs.
DataConnectionAc dcac = mDataConnectionAsyncChannels.get(0);
return dcac.getLinkCapabilitiesSync();
} else {
return new LinkCapabilities();
}
}
// tell all active apns of the current condition
protected void notifyDataConnection(String reason) {
for (int id = 0; id < APN_NUM_TYPES; id++) {
if (dataEnabled[id]) {
mPhone.notifyDataConnection(reason, apnIdToType(id));
}
}
notifyOffApnsOfAvailability(reason);
}
// a new APN has gone active and needs to send events to catch up with the
// current condition
private void notifyApnIdUpToCurrent(String reason, int apnId) {
switch (mState) {
case IDLE:
case INITING:
break;
case CONNECTING:
case SCANNING:
mPhone.notifyDataConnection(reason, apnIdToType(apnId), Phone.DataState.CONNECTING);
break;
case CONNECTED:
case DISCONNECTING:
mPhone.notifyDataConnection(reason, apnIdToType(apnId), Phone.DataState.CONNECTING);
mPhone.notifyDataConnection(reason, apnIdToType(apnId), Phone.DataState.CONNECTED);
break;
}
}
// since we normally don't send info to a disconnected APN, we need to do this specially
private void notifyApnIdDisconnected(String reason, int apnId) {
mPhone.notifyDataConnection(reason, apnIdToType(apnId), Phone.DataState.DISCONNECTED);
}
// disabled apn's still need avail/unavail notificiations - send them out
protected void notifyOffApnsOfAvailability(String reason) {
if (DBG) log("notifyOffApnsOfAvailability - reason= " + reason);
for (int id = 0; id < APN_NUM_TYPES; id++) {
if (!isApnIdEnabled(id)) {
notifyApnIdDisconnected(reason, id);
}
}
}
public boolean isApnTypeEnabled(String apnType) {
if (apnType == null) {
return false;
} else {
return isApnIdEnabled(apnTypeToId(apnType));
}
}
protected synchronized boolean isApnIdEnabled(int id) {
if (id != APN_INVALID_ID) {
return dataEnabled[id];
}
return false;
}
/**
* Ensure that we are connected to an APN of the specified type.
*
* @param type the APN type (currently the only valid values are
* {@link Phone#APN_TYPE_MMS} and {@link Phone#APN_TYPE_SUPL})
* @return Success is indicated by {@code Phone.APN_ALREADY_ACTIVE} or
* {@code Phone.APN_REQUEST_STARTED}. In the latter case, a
* broadcast will be sent by the ConnectivityManager when a
* connection to the APN has been established.
*/
public synchronized int enableApnType(String type) {
int id = apnTypeToId(type);
if (id == APN_INVALID_ID) {
return Phone.APN_REQUEST_FAILED;
}
if (DBG) {
log("enableApnType(" + type + "), isApnTypeActive = " + isApnTypeActive(type)
+ ", isApnIdEnabled =" + isApnIdEnabled(id) + " and state = " + mState);
}
if (!isApnTypeAvailable(type)) {
if (DBG) log("type not available");
return Phone.APN_TYPE_NOT_AVAILABLE;
}
if (isApnIdEnabled(id)) {
return Phone.APN_ALREADY_ACTIVE;
} else {
setEnabled(id, true);
}
return Phone.APN_REQUEST_STARTED;
}
/**
* The APN of the specified type is no longer needed. Ensure that if use of
* the default APN has not been explicitly disabled, we are connected to the
* default APN.
*
* @param type the APN type. The only valid values are currently
* {@link Phone#APN_TYPE_MMS} and {@link Phone#APN_TYPE_SUPL}.
* @return Success is indicated by {@code Phone.APN_ALREADY_ACTIVE} or
* {@code Phone.APN_REQUEST_STARTED}. In the latter case, a
* broadcast will be sent by the ConnectivityManager when a
* connection to the APN has been disconnected. A {@code
* Phone.APN_REQUEST_FAILED} is returned if the type parameter is
* invalid or if the apn wasn't enabled.
*/
public synchronized int disableApnType(String type) {
if (DBG) log("disableApnType(" + type + ")");
int id = apnTypeToId(type);
if (id == APN_INVALID_ID) {
return Phone.APN_REQUEST_FAILED;
}
if (isApnIdEnabled(id)) {
setEnabled(id, false);
if (isApnTypeActive(Phone.APN_TYPE_DEFAULT)) {
if (dataEnabled[APN_DEFAULT_ID]) {
return Phone.APN_ALREADY_ACTIVE;
} else {
return Phone.APN_REQUEST_STARTED;
}
} else {
return Phone.APN_REQUEST_STARTED;
}
} else {
return Phone.APN_REQUEST_FAILED;
}
}
protected void setEnabled(int id, boolean enable) {
if (DBG) {
log("setEnabled(" + id + ", " + enable + ") with old state = " + dataEnabled[id]
+ " and enabledCount = " + enabledCount);
}
Message msg = obtainMessage(EVENT_ENABLE_NEW_APN);
msg.arg1 = id;
msg.arg2 = (enable ? ENABLED : DISABLED);
sendMessage(msg);
}
protected void onEnableApn(int apnId, int enabled) {
if (DBG) {
log("EVENT_APN_ENABLE_REQUEST apnId=" + apnId + ", apnType=" + apnIdToType(apnId) +
", enabled=" + enabled + ", dataEnabled = " + dataEnabled[apnId] +
", enabledCount = " + enabledCount + ", isApnTypeActive = " +
isApnTypeActive(apnIdToType(apnId)));
}
if (enabled == ENABLED) {
synchronized (this) {
if (!dataEnabled[apnId]) {
dataEnabled[apnId] = true;
enabledCount++;
}
}
String type = apnIdToType(apnId);
if (!isApnTypeActive(type)) {
mRequestedApnType = type;
onEnableNewApn();
} else {
notifyApnIdUpToCurrent(Phone.REASON_APN_SWITCHED, apnId);
}
} else {
// disable
boolean didDisable = false;
synchronized (this) {
if (dataEnabled[apnId]) {
dataEnabled[apnId] = false;
enabledCount--;
didDisable = true;
}
}
if (didDisable) {
if ((enabledCount == 0) || (apnId == APN_DUN_ID)) {
mRequestedApnType = Phone.APN_TYPE_DEFAULT;
onCleanUpConnection(true, apnId, Phone.REASON_DATA_DISABLED);
}
// send the disconnect msg manually, since the normal route wont send
// it (it's not enabled)
notifyApnIdDisconnected(Phone.REASON_DATA_DISABLED, apnId);
if (dataEnabled[APN_DEFAULT_ID] == true
&& !isApnTypeActive(Phone.APN_TYPE_DEFAULT)) {
// TODO - this is an ugly way to restore the default conn - should be done
// by a real contention manager and policy that disconnects the lower pri
// stuff as enable requests come in and pops them back on as we disable back
// down to the lower pri stuff
mRequestedApnType = Phone.APN_TYPE_DEFAULT;
onEnableNewApn();
}
}
}
}
/**
* Called when we switch APNs.
*
* mRequestedApnType is set prior to call
* To be overridden.
*/
protected void onEnableNewApn() {
}
/**
* Called when EVENT_RESET_DONE is received so goto
* IDLE state and send notifications to those interested.
*
* TODO - currently unused. Needs to be hooked into DataConnection cleanup
* TODO - needs to pass some notion of which connection is reset..
*/
protected void onResetDone(AsyncResult ar) {
if (DBG) log("EVENT_RESET_DONE");
String reason = null;
if (ar.userObj instanceof String) {
reason = (String) ar.userObj;
}
gotoIdleAndNotifyDataConnection(reason);
}
/**
* Prevent mobile data connections from being established, or once again
* allow mobile data connections. If the state toggles, then either tear
* down or set up data, as appropriate to match the new state.
*
* @param enable indicates whether to enable ({@code true}) or disable (
* {@code false}) data
* @return {@code true} if the operation succeeded
*/
public boolean setInternalDataEnabled(boolean enable) {
if (DBG)
log("setInternalDataEnabled(" + enable + ")");
Message msg = obtainMessage(EVENT_SET_INTERNAL_DATA_ENABLE);
msg.arg1 = (enable ? ENABLED : DISABLED);
sendMessage(msg);
return true;
}
protected void onSetInternalDataEnabled(boolean enabled) {
synchronized (mDataEnabledLock) {
mInternalDataEnabled = enabled;
if (enabled) {
log("onSetInternalDataEnabled: changed to enabled, try to setup data call");
resetAllRetryCounts();
onTrySetupData(Phone.REASON_DATA_ENABLED);
} else {
log("onSetInternalDataEnabled: changed to disabled, cleanUpAllConnections");
cleanUpAllConnections(null);
}
}
}
public void cleanUpAllConnections(String cause) {
Message msg = obtainMessage(EVENT_CLEAN_UP_ALL_CONNECTIONS);
msg.obj = cause;
sendMessage(msg);
}
public abstract boolean isDisconnected();
protected void onSetUserDataEnabled(boolean enabled) {
synchronized (mDataEnabledLock) {
final boolean prevEnabled = getAnyDataEnabled();
if (mUserDataEnabled != enabled) {
mUserDataEnabled = enabled;
Settings.Secure.putInt(mPhone.getContext().getContentResolver(),
Settings.Secure.MOBILE_DATA, enabled ? 1 : 0);
if (prevEnabled != getAnyDataEnabled()) {
if (!prevEnabled) {
resetAllRetryCounts();
onTrySetupData(Phone.REASON_DATA_ENABLED);
} else {
onCleanUpAllConnections(Phone.REASON_DATA_DISABLED);
}
}
}
}
}
protected void onSetDependencyMet(String apnType, boolean met) {
}
protected void onSetPolicyDataEnabled(boolean enabled) {
synchronized (mDataEnabledLock) {
final boolean prevEnabled = getAnyDataEnabled();
if (sPolicyDataEnabled != enabled) {
sPolicyDataEnabled = enabled;
if (prevEnabled != getAnyDataEnabled()) {
if (!prevEnabled) {
resetAllRetryCounts();
onTrySetupData(Phone.REASON_DATA_ENABLED);
} else {
onCleanUpAllConnections(Phone.REASON_DATA_DISABLED);
}
}
}
}
}
protected String getReryConfig(boolean forDefault) {
int rt = mPhone.getServiceState().getRadioTechnology();
if ((rt == ServiceState.RADIO_TECHNOLOGY_IS95A) ||
(rt == ServiceState.RADIO_TECHNOLOGY_IS95B) ||
(rt == ServiceState.RADIO_TECHNOLOGY_1xRTT) ||
(rt == ServiceState.RADIO_TECHNOLOGY_EVDO_0) ||
(rt == ServiceState.RADIO_TECHNOLOGY_EVDO_A) ||
(rt == ServiceState.RADIO_TECHNOLOGY_EVDO_B) ||
(rt == ServiceState.RADIO_TECHNOLOGY_EHRPD)) {
// CDMA variant
return SystemProperties.get("ro.cdma.data_retry_config");
} else {
// Use GSM varient for all others.
if (forDefault) {
return SystemProperties.get("ro.gsm.data_retry_config");
} else {
return SystemProperties.get("ro.gsm.2nd_data_retry_config");
}
}
}
protected void resetAllRetryCounts() {
for (DataConnection dc : mDataConnections.values()) {
dc.resetRetryCount();
}
}
}