/* * 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.gsm; import com.android.internal.telephony.CommandException; import com.android.internal.telephony.CommandsInterface; import com.android.internal.telephony.DataConnectionTracker; import com.android.internal.telephony.EventLogTags; import com.android.internal.telephony.IccCard; import com.android.internal.telephony.MccTable; import com.android.internal.telephony.Phone; import com.android.internal.telephony.RestrictedState; import com.android.internal.telephony.RILConstants; import com.android.internal.telephony.ServiceStateTracker; import com.android.internal.telephony.TelephonyIntents; import com.android.internal.telephony.TelephonyProperties; import android.app.AlarmManager; 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.database.ContentObserver; import android.os.AsyncResult; import android.os.Handler; import android.os.Message; import android.os.PowerManager; import android.os.Registrant; import android.os.RegistrantList; import android.os.SystemClock; import android.os.SystemProperties; import android.provider.Settings; import android.provider.Settings.SettingNotFoundException; import android.provider.Telephony.Intents; import android.telephony.ServiceState; import android.telephony.SignalStrength; import android.telephony.gsm.GsmCellLocation; import android.text.TextUtils; import android.util.EventLog; import android.util.Log; import android.util.TimeUtils; import java.util.Arrays; import java.util.Calendar; import java.util.Date; import java.util.TimeZone; /** * {@hide} */ final class GsmServiceStateTracker extends ServiceStateTracker { static final String LOG_TAG = "GSM"; static final boolean DBG = true; GSMPhone phone; GsmCellLocation cellLoc; GsmCellLocation newCellLoc; int mPreferredNetworkType; private int gprsState = ServiceState.STATE_OUT_OF_SERVICE; private int newGPRSState = ServiceState.STATE_OUT_OF_SERVICE; private int mMaxDataCalls = 1; private int mNewMaxDataCalls = 1; private int mReasonDataDenied = -1; private int mNewReasonDataDenied = -1; /** * GSM roaming status solely based on TS 27.007 7.2 CREG. Only used by * handlePollStateResult to store CREG roaming result. */ private boolean mGsmRoaming = false; /** * Data roaming status solely based on TS 27.007 10.1.19 CGREG. Only used by * handlePollStateResult to store CGREG roaming result. */ private boolean mDataRoaming = false; /** * Mark when service state is in emergency call only mode */ private boolean mEmergencyOnly = false; /** * Sometimes we get the NITZ time before we know what country we * are in. Keep the time zone information from the NITZ string so * we can fix the time zone once know the country. */ private boolean mNeedFixZone = false; private int mZoneOffset; private boolean mZoneDst; private long mZoneTime; private boolean mGotCountryCode = false; private ContentResolver cr; String mSavedTimeZone; long mSavedTime; long mSavedAtTime; /** * We can't register for SIM_RECORDS_LOADED immediately because the * SIMRecords object may not be instantiated yet. */ private boolean mNeedToRegForSimLoaded; /** Started the recheck process after finding gprs should registered but not. */ private boolean mStartedGprsRegCheck = false; /** Already sent the event-log for no gprs register. */ private boolean mReportedGprsNoReg = false; /** * The Notification object given to the NotificationManager. */ private Notification mNotification; /** Wake lock used while setting time of day. */ private PowerManager.WakeLock mWakeLock; private static final String WAKELOCK_TAG = "ServiceStateTracker"; /** Keep track of SPN display rules, so we only broadcast intent if something changes. */ private String curSpn = null; private String curPlmn = null; private int curSpnRule = 0; /** waiting period before recheck gprs and voice registration. */ static final int DEFAULT_GPRS_CHECK_PERIOD_MILLIS = 60 * 1000; /** Notification type. */ static final int PS_ENABLED = 1001; // Access Control blocks data service static final int PS_DISABLED = 1002; // Access Control enables data service static final int CS_ENABLED = 1003; // Access Control blocks all voice/sms service static final int CS_DISABLED = 1004; // Access Control enables all voice/sms service static final int CS_NORMAL_ENABLED = 1005; // Access Control blocks normal voice/sms service static final int CS_EMERGENCY_ENABLED = 1006; // Access Control blocks emergency call service /** Notification id. */ static final int PS_NOTIFICATION = 888; // Id to update and cancel PS restricted static final int CS_NOTIFICATION = 999; // Id to update and cancel CS restricted private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(Intent.ACTION_LOCALE_CHANGED)) { // update emergency string whenever locale changed updateSpnDisplay(); } } }; private ContentObserver mAutoTimeObserver = new ContentObserver(new Handler()) { @Override public void onChange(boolean selfChange) { Log.i("GsmServiceStateTracker", "Auto time state changed"); revertToNitzTime(); } }; private ContentObserver mAutoTimeZoneObserver = new ContentObserver(new Handler()) { @Override public void onChange(boolean selfChange) { Log.i("GsmServiceStateTracker", "Auto time zone state changed"); revertToNitzTimeZone(); } }; public GsmServiceStateTracker(GSMPhone phone) { super(); this.phone = phone; cm = phone.mCM; ss = new ServiceState(); newSS = new ServiceState(); cellLoc = new GsmCellLocation(); newCellLoc = new GsmCellLocation(); mSignalStrength = new SignalStrength(); PowerManager powerManager = (PowerManager)phone.getContext().getSystemService(Context.POWER_SERVICE); mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKELOCK_TAG); cm.registerForAvailable(this, EVENT_RADIO_AVAILABLE, null); cm.registerForRadioStateChanged(this, EVENT_RADIO_STATE_CHANGED, null); cm.registerForVoiceNetworkStateChanged(this, EVENT_NETWORK_STATE_CHANGED, null); cm.setOnNITZTime(this, EVENT_NITZ_TIME, null); cm.setOnSignalStrengthUpdate(this, EVENT_SIGNAL_STRENGTH_UPDATE, null); cm.setOnRestrictedStateChanged(this, EVENT_RESTRICTED_STATE_CHANGED, null); cm.registerForSIMReady(this, EVENT_SIM_READY, null); // system setting property AIRPLANE_MODE_ON is set in Settings. int airplaneMode = Settings.System.getInt( phone.getContext().getContentResolver(), Settings.System.AIRPLANE_MODE_ON, 0); mDesiredPowerState = ! (airplaneMode > 0); cr = phone.getContext().getContentResolver(); cr.registerContentObserver( Settings.System.getUriFor(Settings.System.AUTO_TIME), true, mAutoTimeObserver); cr.registerContentObserver( Settings.System.getUriFor(Settings.System.AUTO_TIME_ZONE), true, mAutoTimeZoneObserver); setSignalStrengthDefaultValues(); mNeedToRegForSimLoaded = true; // Monitor locale change IntentFilter filter = new IntentFilter(); filter.addAction(Intent.ACTION_LOCALE_CHANGED); phone.getContext().registerReceiver(mIntentReceiver, filter); // Gsm doesn't support OTASP so its not needed phone.notifyOtaspChanged(OTASP_NOT_NEEDED); } public void dispose() { // Unregister for all events. cm.unregisterForAvailable(this); cm.unregisterForRadioStateChanged(this); cm.unregisterForVoiceNetworkStateChanged(this); cm.unregisterForSIMReady(this); phone.mIccRecords.unregisterForRecordsLoaded(this); cm.unSetOnSignalStrengthUpdate(this); cm.unSetOnRestrictedStateChanged(this); cm.unSetOnNITZTime(this); cr.unregisterContentObserver(this.mAutoTimeObserver); cr.unregisterContentObserver(this.mAutoTimeZoneObserver); } protected void finalize() { if(DBG) log("finalize"); } @Override protected Phone getPhone() { return phone; } public void handleMessage (Message msg) { AsyncResult ar; int[] ints; String[] strings; Message message; switch (msg.what) { case EVENT_RADIO_AVAILABLE: //this is unnecessary //setPowerStateToDesired(); break; case EVENT_SIM_READY: // Set the network type, in case the radio does not restore it. cm.setCurrentPreferredNetworkType(); // The SIM is now ready i.e if it was locked // it has been unlocked. At this stage, the radio is already // powered on. if (mNeedToRegForSimLoaded) { phone.mIccRecords.registerForRecordsLoaded(this, EVENT_SIM_RECORDS_LOADED, null); mNeedToRegForSimLoaded = false; } boolean skipRestoringSelection = phone.getContext().getResources().getBoolean( com.android.internal.R.bool.skip_restoring_network_selection); if (!skipRestoringSelection) { // restore the previous network selection. phone.restoreSavedNetworkSelection(null); } pollState(); // Signal strength polling stops when radio is off queueNextSignalStrengthPoll(); break; case EVENT_RADIO_STATE_CHANGED: // This will do nothing in the radio not // available case setPowerStateToDesired(); pollState(); break; case EVENT_NETWORK_STATE_CHANGED: pollState(); break; case EVENT_GET_SIGNAL_STRENGTH: // This callback is called when signal strength is polled // all by itself if (!(cm.getRadioState().isOn()) || (cm.getRadioState().isCdma())) { // Polling will continue when radio turns back on and not CDMA return; } ar = (AsyncResult) msg.obj; onSignalStrengthResult(ar); queueNextSignalStrengthPoll(); break; case EVENT_GET_LOC_DONE: ar = (AsyncResult) msg.obj; if (ar.exception == null) { String states[] = (String[])ar.result; int lac = -1; int cid = -1; if (states.length >= 3) { try { if (states[1] != null && states[1].length() > 0) { lac = Integer.parseInt(states[1], 16); } if (states[2] != null && states[2].length() > 0) { cid = Integer.parseInt(states[2], 16); } } catch (NumberFormatException ex) { Log.w(LOG_TAG, "error parsing location: " + ex); } } cellLoc.setLacAndCid(lac, cid); phone.notifyLocationChanged(); } // Release any temporary cell lock, which could have been // acquired to allow a single-shot location update. disableSingleLocationUpdate(); break; case EVENT_POLL_STATE_REGISTRATION: case EVENT_POLL_STATE_GPRS: case EVENT_POLL_STATE_OPERATOR: case EVENT_POLL_STATE_NETWORK_SELECTION_MODE: ar = (AsyncResult) msg.obj; handlePollStateResult(msg.what, ar); break; case EVENT_POLL_SIGNAL_STRENGTH: // Just poll signal strength...not part of pollState() cm.getSignalStrength(obtainMessage(EVENT_GET_SIGNAL_STRENGTH)); break; case EVENT_NITZ_TIME: ar = (AsyncResult) msg.obj; String nitzString = (String)((Object[])ar.result)[0]; long nitzReceiveTime = ((Long)((Object[])ar.result)[1]).longValue(); setTimeFromNITZString(nitzString, nitzReceiveTime); break; case EVENT_SIGNAL_STRENGTH_UPDATE: // This is a notification from // CommandsInterface.setOnSignalStrengthUpdate ar = (AsyncResult) msg.obj; // The radio is telling us about signal strength changes // we don't have to ask it dontPollSignalStrength = true; onSignalStrengthResult(ar); break; case EVENT_SIM_RECORDS_LOADED: updateSpnDisplay(); break; case EVENT_LOCATION_UPDATES_ENABLED: ar = (AsyncResult) msg.obj; if (ar.exception == null) { cm.getVoiceRegistrationState(obtainMessage(EVENT_GET_LOC_DONE, null)); } break; case EVENT_SET_PREFERRED_NETWORK_TYPE: ar = (AsyncResult) msg.obj; // Don't care the result, only use for dereg network (COPS=2) message = obtainMessage(EVENT_RESET_PREFERRED_NETWORK_TYPE, ar.userObj); cm.setPreferredNetworkType(mPreferredNetworkType, message); break; case EVENT_RESET_PREFERRED_NETWORK_TYPE: ar = (AsyncResult) msg.obj; if (ar.userObj != null) { AsyncResult.forMessage(((Message) ar.userObj)).exception = ar.exception; ((Message) ar.userObj).sendToTarget(); } break; case EVENT_GET_PREFERRED_NETWORK_TYPE: ar = (AsyncResult) msg.obj; if (ar.exception == null) { mPreferredNetworkType = ((int[])ar.result)[0]; } else { mPreferredNetworkType = RILConstants.NETWORK_MODE_GLOBAL; } message = obtainMessage(EVENT_SET_PREFERRED_NETWORK_TYPE, ar.userObj); int toggledNetworkType = RILConstants.NETWORK_MODE_GLOBAL; cm.setPreferredNetworkType(toggledNetworkType, message); break; case EVENT_CHECK_REPORT_GPRS: if (ss != null && !isGprsConsistent(gprsState, ss.getState())) { // Can't register data service while voice service is ok // i.e. CREG is ok while CGREG is not // possible a network or baseband side error GsmCellLocation loc = ((GsmCellLocation)phone.getCellLocation()); EventLog.writeEvent(EventLogTags.DATA_NETWORK_REGISTRATION_FAIL, ss.getOperatorNumeric(), loc != null ? loc.getCid() : -1); mReportedGprsNoReg = true; } mStartedGprsRegCheck = false; break; case EVENT_RESTRICTED_STATE_CHANGED: // This is a notification from // CommandsInterface.setOnRestrictedStateChanged if (DBG) log("EVENT_RESTRICTED_STATE_CHANGED"); ar = (AsyncResult) msg.obj; onRestrictedStateChanged(ar); break; default: super.handleMessage(msg); break; } } protected void setPowerStateToDesired() { // If we want it on and it's off, turn it on if (mDesiredPowerState && cm.getRadioState() == CommandsInterface.RadioState.RADIO_OFF) { cm.setRadioPower(true, null); } else if (!mDesiredPowerState && cm.getRadioState().isOn()) { // If it's on and available and we want it off gracefully DataConnectionTracker dcTracker = phone.mDataConnectionTracker; powerOffRadioSafely(dcTracker); } // Otherwise, we're in the desired state } @Override protected void hangupAndPowerOff() { // hang up all active voice calls if (phone.isInCall()) { phone.mCT.ringingCall.hangupIfAlive(); phone.mCT.backgroundCall.hangupIfAlive(); phone.mCT.foregroundCall.hangupIfAlive(); } cm.setRadioPower(false, null); } protected void updateSpnDisplay() { int rule = phone.mIccRecords.getDisplayRule(ss.getOperatorNumeric()); String spn = phone.mIccRecords.getServiceProviderName(); String plmn = ss.getOperatorAlphaLong(); // For emergency calls only, pass the EmergencyCallsOnly string via EXTRA_PLMN if (mEmergencyOnly && cm.getRadioState().isOn()) { plmn = Resources.getSystem(). getText(com.android.internal.R.string.emergency_calls_only).toString(); if (DBG) log("updateSpnDisplay: emergency only and radio is on plmn='" + plmn + "'"); } if (rule != curSpnRule || !TextUtils.equals(spn, curSpn) || !TextUtils.equals(plmn, curPlmn)) { boolean showSpn = !mEmergencyOnly && !TextUtils.isEmpty(spn) && (rule & SIMRecords.SPN_RULE_SHOW_SPN) == SIMRecords.SPN_RULE_SHOW_SPN; boolean showPlmn = !TextUtils.isEmpty(plmn) && (rule & SIMRecords.SPN_RULE_SHOW_PLMN) == SIMRecords.SPN_RULE_SHOW_PLMN; if (DBG) { log(String.format("updateSpnDisplay: changed sending intent" + " rule=" + rule + " showPlmn='%b' plmn='%s' showSpn='%b' spn='%s'", showPlmn, plmn, showSpn, spn)); } Intent intent = new Intent(Intents.SPN_STRINGS_UPDATED_ACTION); intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); intent.putExtra(Intents.EXTRA_SHOW_SPN, showSpn); intent.putExtra(Intents.EXTRA_SPN, spn); intent.putExtra(Intents.EXTRA_SHOW_PLMN, showPlmn); intent.putExtra(Intents.EXTRA_PLMN, plmn); phone.getContext().sendStickyBroadcast(intent); } curSpnRule = rule; curSpn = spn; curPlmn = plmn; } /** * Handle the result of one of the pollState()-related requests */ protected void handlePollStateResult (int what, AsyncResult ar) { int ints[]; String states[]; // Ignore stale requests from last poll if (ar.userObj != pollingContext) return; if (ar.exception != null) { CommandException.Error err=null; if (ar.exception instanceof CommandException) { err = ((CommandException)(ar.exception)).getCommandError(); } if (err == CommandException.Error.RADIO_NOT_AVAILABLE) { // Radio has crashed or turned off cancelPollState(); return; } if (!cm.getRadioState().isOn()) { // Radio has crashed or turned off cancelPollState(); return; } if (err != CommandException.Error.OP_NOT_ALLOWED_BEFORE_REG_NW) { loge("RIL implementation has returned an error where it must succeed" + ar.exception); } } else try { switch (what) { case EVENT_POLL_STATE_REGISTRATION: states = (String[])ar.result; int lac = -1; int cid = -1; int regState = -1; int reasonRegStateDenied = -1; int psc = -1; if (states.length > 0) { try { regState = Integer.parseInt(states[0]); if (states.length >= 3) { if (states[1] != null && states[1].length() > 0) { lac = Integer.parseInt(states[1], 16); } if (states[2] != null && states[2].length() > 0) { cid = Integer.parseInt(states[2], 16); } } if (states.length > 14) { if (states[14] != null && states[14].length() > 0) { psc = Integer.parseInt(states[14], 16); } } } catch (NumberFormatException ex) { loge("error parsing RegistrationState: " + ex); } } mGsmRoaming = regCodeIsRoaming(regState); newSS.setState (regCodeToServiceState(regState)); if (regState == 10 || regState == 12 || regState == 13 || regState == 14) { mEmergencyOnly = true; } else { mEmergencyOnly = false; } // LAC and CID are -1 if not avail newCellLoc.setLacAndCid(lac, cid); newCellLoc.setPsc(psc); break; case EVENT_POLL_STATE_GPRS: states = (String[])ar.result; int type = 0; regState = -1; mNewReasonDataDenied = -1; mNewMaxDataCalls = 1; if (states.length > 0) { try { regState = Integer.parseInt(states[0]); // states[3] (if present) is the current radio technology if (states.length >= 4 && states[3] != null) { type = Integer.parseInt(states[3]); } if ((states.length >= 5 ) && (regState == 3)) { mNewReasonDataDenied = Integer.parseInt(states[4]); } if (states.length >= 6) { mNewMaxDataCalls = Integer.parseInt(states[5]); } } catch (NumberFormatException ex) { loge("error parsing GprsRegistrationState: " + ex); } } newGPRSState = regCodeToServiceState(regState); mDataRoaming = regCodeIsRoaming(regState); mNewRadioTechnology = type; newSS.setRadioTechnology(type); break; case EVENT_POLL_STATE_OPERATOR: String opNames[] = (String[])ar.result; if (opNames != null && opNames.length >= 3) { newSS.setOperatorName ( opNames[0], opNames[1], opNames[2]); } break; case EVENT_POLL_STATE_NETWORK_SELECTION_MODE: ints = (int[])ar.result; newSS.setIsManualSelection(ints[0] == 1); break; } } catch (RuntimeException ex) { loge("Exception while polling service state. Probably malformed RIL response." + ex); } pollingContext[0]--; if (pollingContext[0] == 0) { /** * Since the roaming states of gsm service (from +CREG) and * data service (from +CGREG) could be different, the new SS * is set roaming while either one is roaming. * * There is an exception for the above rule. The new SS is not set * as roaming while gsm service reports roaming but indeed it is * not roaming between operators. */ boolean roaming = (mGsmRoaming || mDataRoaming); if (mGsmRoaming && !isRoamingBetweenOperators(mGsmRoaming, newSS)) { roaming = false; } newSS.setRoaming(roaming); newSS.setEmergencyOnly(mEmergencyOnly); pollStateDone(); } } private void setSignalStrengthDefaultValues() { // TODO Make a constructor only has boolean gsm as parameter mSignalStrength = new SignalStrength(99, -1, -1, -1, -1, -1, -1, -1, -1, -1, SignalStrength.INVALID_SNR, -1, true); } /** * A complete "service state" from our perspective is * composed of a handful of separate requests to the radio. * * We make all of these requests at once, but then abandon them * and start over again if the radio notifies us that some * event has changed */ private void pollState() { pollingContext = new int[1]; pollingContext[0] = 0; switch (cm.getRadioState()) { case RADIO_UNAVAILABLE: newSS.setStateOutOfService(); newCellLoc.setStateInvalid(); setSignalStrengthDefaultValues(); mGotCountryCode = false; pollStateDone(); break; case RADIO_OFF: newSS.setStateOff(); newCellLoc.setStateInvalid(); setSignalStrengthDefaultValues(); mGotCountryCode = false; pollStateDone(); break; case RUIM_NOT_READY: case RUIM_READY: case RUIM_LOCKED_OR_ABSENT: case NV_NOT_READY: case NV_READY: if (DBG) log("Radio Technology Change ongoing, setting SS to off"); newSS.setStateOff(); newCellLoc.setStateInvalid(); setSignalStrengthDefaultValues(); mGotCountryCode = false; //NOTE: pollStateDone() is not needed in this case break; default: // Issue all poll-related commands at once // then count down the responses, which // are allowed to arrive out-of-order pollingContext[0]++; cm.getOperator( obtainMessage( EVENT_POLL_STATE_OPERATOR, pollingContext)); pollingContext[0]++; cm.getDataRegistrationState( obtainMessage( EVENT_POLL_STATE_GPRS, pollingContext)); pollingContext[0]++; cm.getVoiceRegistrationState( obtainMessage( EVENT_POLL_STATE_REGISTRATION, pollingContext)); pollingContext[0]++; cm.getNetworkSelectionMode( obtainMessage( EVENT_POLL_STATE_NETWORK_SELECTION_MODE, pollingContext)); break; } } private void pollStateDone() { if (DBG) { log("Poll ServiceState done: " + " oldSS=[" + ss + "] newSS=[" + newSS + "] oldGprs=" + gprsState + " newData=" + newGPRSState + " oldMaxDataCalls=" + mMaxDataCalls + " mNewMaxDataCalls=" + mNewMaxDataCalls + " oldReasonDataDenied=" + mReasonDataDenied + " mNewReasonDataDenied=" + mNewReasonDataDenied + " oldType=" + ServiceState.radioTechnologyToString(mRadioTechnology) + " newType=" + ServiceState.radioTechnologyToString(mNewRadioTechnology)); } boolean hasRegistered = ss.getState() != ServiceState.STATE_IN_SERVICE && newSS.getState() == ServiceState.STATE_IN_SERVICE; boolean hasDeregistered = ss.getState() == ServiceState.STATE_IN_SERVICE && newSS.getState() != ServiceState.STATE_IN_SERVICE; boolean hasGprsAttached = gprsState != ServiceState.STATE_IN_SERVICE && newGPRSState == ServiceState.STATE_IN_SERVICE; boolean hasGprsDetached = gprsState == ServiceState.STATE_IN_SERVICE && newGPRSState != ServiceState.STATE_IN_SERVICE; boolean hasRadioTechnologyChanged = mRadioTechnology != mNewRadioTechnology; boolean hasChanged = !newSS.equals(ss); boolean hasRoamingOn = !ss.getRoaming() && newSS.getRoaming(); boolean hasRoamingOff = ss.getRoaming() && !newSS.getRoaming(); boolean hasLocationChanged = !newCellLoc.equals(cellLoc); // Add an event log when connection state changes if (ss.getState() != newSS.getState() || gprsState != newGPRSState) { EventLog.writeEvent(EventLogTags.GSM_SERVICE_STATE_CHANGE, ss.getState(), gprsState, newSS.getState(), newGPRSState); } ServiceState tss; tss = ss; ss = newSS; newSS = tss; // clean slate for next time newSS.setStateOutOfService(); GsmCellLocation tcl = cellLoc; cellLoc = newCellLoc; newCellLoc = tcl; // Add an event log when network type switched // TODO: we may add filtering to reduce the event logged, // i.e. check preferred network setting, only switch to 2G, etc if (hasRadioTechnologyChanged) { int cid = -1; GsmCellLocation loc = ((GsmCellLocation)phone.getCellLocation()); if (loc != null) cid = loc.getCid(); EventLog.writeEvent(EventLogTags.GSM_RAT_SWITCHED, cid, mRadioTechnology, mNewRadioTechnology); if (DBG) { log("RAT switched " + ServiceState.radioTechnologyToString(mRadioTechnology) + " -> " + ServiceState.radioTechnologyToString(mNewRadioTechnology) + " at cell " + cid); } } gprsState = newGPRSState; mReasonDataDenied = mNewReasonDataDenied; mMaxDataCalls = mNewMaxDataCalls; mRadioTechnology = mNewRadioTechnology; // this new state has been applied - forget it until we get a new new state mNewRadioTechnology = 0; newSS.setStateOutOfService(); // clean slate for next time if (hasRadioTechnologyChanged) { phone.setSystemProperty(TelephonyProperties.PROPERTY_DATA_NETWORK_TYPE, ServiceState.radioTechnologyToString(mRadioTechnology)); } if (hasRegistered) { mNetworkAttachedRegistrants.notifyRegistrants(); } if (hasChanged) { String operatorNumeric; updateSpnDisplay(); phone.setSystemProperty(TelephonyProperties.PROPERTY_OPERATOR_ALPHA, ss.getOperatorAlphaLong()); operatorNumeric = ss.getOperatorNumeric(); phone.setSystemProperty(TelephonyProperties.PROPERTY_OPERATOR_NUMERIC, operatorNumeric); if (operatorNumeric == null) { phone.setSystemProperty(TelephonyProperties.PROPERTY_OPERATOR_ISO_COUNTRY, ""); mGotCountryCode = false; } else { String iso = ""; try{ iso = MccTable.countryCodeForMcc(Integer.parseInt( operatorNumeric.substring(0,3))); } catch ( NumberFormatException ex){ loge("countryCodeForMcc error" + ex); } catch ( StringIndexOutOfBoundsException ex) { loge("countryCodeForMcc error" + ex); } phone.setSystemProperty(TelephonyProperties.PROPERTY_OPERATOR_ISO_COUNTRY, iso); mGotCountryCode = true; if (mNeedFixZone) { TimeZone zone = null; // If the offset is (0, false) and the timezone property // is set, use the timezone property rather than // GMT. String zoneName = SystemProperties.get(TIMEZONE_PROPERTY); if ((mZoneOffset == 0) && (mZoneDst == false) && (zoneName != null) && (zoneName.length() > 0) && (Arrays.binarySearch(GMT_COUNTRY_CODES, iso) < 0)) { zone = TimeZone.getDefault(); // For NITZ string without timezone, // need adjust time to reflect default timezone setting long tzOffset; tzOffset = zone.getOffset(System.currentTimeMillis()); if (getAutoTime()) { setAndBroadcastNetworkSetTime(System.currentTimeMillis() - tzOffset); } else { // Adjust the saved NITZ time to account for tzOffset. mSavedTime = mSavedTime - tzOffset; } } else if (iso.equals("")){ // Country code not found. This is likely a test network. // Get a TimeZone based only on the NITZ parameters (best guess). zone = getNitzTimeZone(mZoneOffset, mZoneDst, mZoneTime); } else { zone = TimeUtils.getTimeZone(mZoneOffset, mZoneDst, mZoneTime, iso); } mNeedFixZone = false; if (zone != null) { if (getAutoTimeZone()) { setAndBroadcastNetworkSetTimeZone(zone.getID()); } saveNitzTimeZone(zone.getID()); } } } phone.setSystemProperty(TelephonyProperties.PROPERTY_OPERATOR_ISROAMING, ss.getRoaming() ? "true" : "false"); phone.notifyServiceStateChanged(ss); } if (hasGprsAttached) { mAttachedRegistrants.notifyRegistrants(); } if (hasGprsDetached) { mDetachedRegistrants.notifyRegistrants(); } if (hasRadioTechnologyChanged) { phone.notifyDataConnection(Phone.REASON_NW_TYPE_CHANGED); } if (hasRoamingOn) { mRoamingOnRegistrants.notifyRegistrants(); } if (hasRoamingOff) { mRoamingOffRegistrants.notifyRegistrants(); } if (hasLocationChanged) { phone.notifyLocationChanged(); } if (! isGprsConsistent(gprsState, ss.getState())) { if (!mStartedGprsRegCheck && !mReportedGprsNoReg) { mStartedGprsRegCheck = true; int check_period = Settings.Secure.getInt( phone.getContext().getContentResolver(), Settings.Secure.GPRS_REGISTER_CHECK_PERIOD_MS, DEFAULT_GPRS_CHECK_PERIOD_MILLIS); sendMessageDelayed(obtainMessage(EVENT_CHECK_REPORT_GPRS), check_period); } } else { mReportedGprsNoReg = false; } } /** * Check if GPRS got registered while voice is registered. * * @param gprsState for GPRS registration state, i.e. CGREG in GSM * @param serviceState for voice registration state, i.e. CREG in GSM * @return false if device only register to voice but not gprs */ private boolean isGprsConsistent(int gprsState, int serviceState) { return !((serviceState == ServiceState.STATE_IN_SERVICE) && (gprsState != ServiceState.STATE_IN_SERVICE)); } /** * Returns a TimeZone object based only on parameters from the NITZ string. */ private TimeZone getNitzTimeZone(int offset, boolean dst, long when) { TimeZone guess = findTimeZone(offset, dst, when); if (guess == null) { // Couldn't find a proper timezone. Perhaps the DST data is wrong. guess = findTimeZone(offset, !dst, when); } if (DBG) log("getNitzTimeZone returning " + (guess == null ? guess : guess.getID())); return guess; } private TimeZone findTimeZone(int offset, boolean dst, long when) { int rawOffset = offset; if (dst) { rawOffset -= 3600000; } String[] zones = TimeZone.getAvailableIDs(rawOffset); TimeZone guess = null; Date d = new Date(when); for (String zone : zones) { TimeZone tz = TimeZone.getTimeZone(zone); if (tz.getOffset(when) == offset && tz.inDaylightTime(d) == dst) { guess = tz; break; } } return guess; } private void queueNextSignalStrengthPoll() { if (dontPollSignalStrength || (cm.getRadioState().isCdma())) { // The radio is telling us about signal strength changes // we don't have to ask it return; } Message msg; msg = obtainMessage(); msg.what = EVENT_POLL_SIGNAL_STRENGTH; long nextTime; // TODO Don't poll signal strength if screen is off sendMessageDelayed(msg, POLL_PERIOD_MILLIS); } /** * Send signal-strength-changed notification if changed. * Called both for solicited and unsolicited signal strength updates. */ private void onSignalStrengthResult(AsyncResult ar) { SignalStrength oldSignalStrength = mSignalStrength; int rssi = 99; int lteSignalStrength = -1; int lteRsrp = -1; int lteRsrq = -1; int lteRssnr = SignalStrength.INVALID_SNR; int lteCqi = -1; if (ar.exception != null) { // -1 = unknown // most likely radio is resetting/disconnected setSignalStrengthDefaultValues(); } else { int[] ints = (int[])ar.result; // bug 658816 seems to be a case where the result is 0-length if (ints.length != 0) { rssi = ints[0]; lteSignalStrength = ints[7]; lteRsrp = ints[8]; lteRsrq = ints[9]; lteRssnr = ints[10]; lteCqi = ints[11]; } else { loge("Bogus signal strength response"); rssi = 99; } } mSignalStrength = new SignalStrength(rssi, -1, -1, -1, -1, -1, -1, lteSignalStrength, lteRsrp, lteRsrq, lteRssnr, lteCqi, true); if (!mSignalStrength.equals(oldSignalStrength)) { try { // This takes care of delayed EVENT_POLL_SIGNAL_STRENGTH (scheduled after // POLL_PERIOD_MILLIS) during Radio Technology Change) phone.notifySignalStrength(); } catch (NullPointerException ex) { log("onSignalStrengthResult() Phone already destroyed: " + ex + "SignalStrength not notified"); } } } /** * Set restricted state based on the OnRestrictedStateChanged notification * If any voice or packet restricted state changes, trigger a UI * notification and notify registrants when sim is ready. * * @param ar an int value of RIL_RESTRICTED_STATE_* */ private void onRestrictedStateChanged(AsyncResult ar) { RestrictedState newRs = new RestrictedState(); if (DBG) log("onRestrictedStateChanged: E rs "+ mRestrictedState); if (ar.exception == null) { int[] ints = (int[])ar.result; int state = ints[0]; newRs.setCsEmergencyRestricted( ((state & RILConstants.RIL_RESTRICTED_STATE_CS_EMERGENCY) != 0) || ((state & RILConstants.RIL_RESTRICTED_STATE_CS_ALL) != 0) ); //ignore the normal call and data restricted state before SIM READY if (phone.getIccCard().getState() == IccCard.State.READY) { newRs.setCsNormalRestricted( ((state & RILConstants.RIL_RESTRICTED_STATE_CS_NORMAL) != 0) || ((state & RILConstants.RIL_RESTRICTED_STATE_CS_ALL) != 0) ); newRs.setPsRestricted( (state & RILConstants.RIL_RESTRICTED_STATE_PS_ALL)!= 0); } if (DBG) log("onRestrictedStateChanged: new rs "+ newRs); if (!mRestrictedState.isPsRestricted() && newRs.isPsRestricted()) { mPsRestrictEnabledRegistrants.notifyRegistrants(); setNotification(PS_ENABLED); } else if (mRestrictedState.isPsRestricted() && !newRs.isPsRestricted()) { mPsRestrictDisabledRegistrants.notifyRegistrants(); setNotification(PS_DISABLED); } /** * There are two kind of cs restriction, normal and emergency. So * there are 4 x 4 combinations in current and new restricted states * and we only need to notify when state is changed. */ if (mRestrictedState.isCsRestricted()) { if (!newRs.isCsRestricted()) { // remove all restriction setNotification(CS_DISABLED); } else if (!newRs.isCsNormalRestricted()) { // remove normal restriction setNotification(CS_EMERGENCY_ENABLED); } else if (!newRs.isCsEmergencyRestricted()) { // remove emergency restriction setNotification(CS_NORMAL_ENABLED); } } else if (mRestrictedState.isCsEmergencyRestricted() && !mRestrictedState.isCsNormalRestricted()) { if (!newRs.isCsRestricted()) { // remove all restriction setNotification(CS_DISABLED); } else if (newRs.isCsRestricted()) { // enable all restriction setNotification(CS_ENABLED); } else if (newRs.isCsNormalRestricted()) { // remove emergency restriction and enable normal restriction setNotification(CS_NORMAL_ENABLED); } } else if (!mRestrictedState.isCsEmergencyRestricted() && mRestrictedState.isCsNormalRestricted()) { if (!newRs.isCsRestricted()) { // remove all restriction setNotification(CS_DISABLED); } else if (newRs.isCsRestricted()) { // enable all restriction setNotification(CS_ENABLED); } else if (newRs.isCsEmergencyRestricted()) { // remove normal restriction and enable emergency restriction setNotification(CS_EMERGENCY_ENABLED); } } else { if (newRs.isCsRestricted()) { // enable all restriction setNotification(CS_ENABLED); } else if (newRs.isCsEmergencyRestricted()) { // enable emergency restriction setNotification(CS_EMERGENCY_ENABLED); } else if (newRs.isCsNormalRestricted()) { // enable normal restriction setNotification(CS_NORMAL_ENABLED); } } mRestrictedState = newRs; } log("onRestrictedStateChanged: X rs "+ mRestrictedState); } /** code is registration state 0-5 from TS 27.007 7.2 */ private int regCodeToServiceState(int code) { switch (code) { case 0: case 2: // 2 is "searching" case 3: // 3 is "registration denied" case 4: // 4 is "unknown" no vaild in current baseband case 10:// same as 0, but indicates that emergency call is possible. case 12:// same as 2, but indicates that emergency call is possible. case 13:// same as 3, but indicates that emergency call is possible. case 14:// same as 4, but indicates that emergency call is possible. return ServiceState.STATE_OUT_OF_SERVICE; case 1: return ServiceState.STATE_IN_SERVICE; case 5: // in service, roam return ServiceState.STATE_IN_SERVICE; default: loge("regCodeToServiceState: unexpected service state " + code); return ServiceState.STATE_OUT_OF_SERVICE; } } /** * code is registration state 0-5 from TS 27.007 7.2 * returns true if registered roam, false otherwise */ private boolean regCodeIsRoaming (int code) { // 5 is "in service -- roam" return 5 == code; } /** * Set roaming state when gsmRoaming is true and, if operator mcc is the * same as sim mcc, ons is different from spn * @param gsmRoaming TS 27.007 7.2 CREG registered roaming * @param s ServiceState hold current ons * @return true for roaming state set */ private boolean isRoamingBetweenOperators(boolean gsmRoaming, ServiceState s) { String spn = SystemProperties.get(TelephonyProperties.PROPERTY_ICC_OPERATOR_ALPHA, "empty"); String onsl = s.getOperatorAlphaLong(); String onss = s.getOperatorAlphaShort(); boolean equalsOnsl = onsl != null && spn.equals(onsl); boolean equalsOnss = onss != null && spn.equals(onss); String simNumeric = SystemProperties.get( TelephonyProperties.PROPERTY_ICC_OPERATOR_NUMERIC, ""); String operatorNumeric = s.getOperatorNumeric(); boolean equalsMcc = true; try { equalsMcc = simNumeric.substring(0, 3). equals(operatorNumeric.substring(0, 3)); } catch (Exception e){ } return gsmRoaming && !(equalsMcc && (equalsOnsl || equalsOnss)); } private static int twoDigitsAt(String s, int offset) { int a, b; a = Character.digit(s.charAt(offset), 10); b = Character.digit(s.charAt(offset+1), 10); if (a < 0 || b < 0) { throw new RuntimeException("invalid format"); } return a*10 + b; } /** * @return The current GPRS state. IN_SERVICE is the same as "attached" * and OUT_OF_SERVICE is the same as detached. */ int getCurrentGprsState() { return gprsState; } public int getCurrentDataConnectionState() { return gprsState; } /** * @return true if phone is camping on a technology (eg UMTS) * that could support voice and data simultaneously. */ public boolean isConcurrentVoiceAndDataAllowed() { return (mRadioTechnology >= ServiceState.RADIO_TECHNOLOGY_UMTS); } /** * Provides the name of the algorithmic time zone for the specified * offset. Taken from TimeZone.java. */ private static String displayNameFor(int off) { off = off / 1000 / 60; char[] buf = new char[9]; buf[0] = 'G'; buf[1] = 'M'; buf[2] = 'T'; if (off < 0) { buf[3] = '-'; off = -off; } else { buf[3] = '+'; } int hours = off / 60; int minutes = off % 60; buf[4] = (char) ('0' + hours / 10); buf[5] = (char) ('0' + hours % 10); buf[6] = ':'; buf[7] = (char) ('0' + minutes / 10); buf[8] = (char) ('0' + minutes % 10); return new String(buf); } /** * nitzReceiveTime is time_t that the NITZ time was posted */ private void setTimeFromNITZString (String nitz, long nitzReceiveTime) { // "yy/mm/dd,hh:mm:ss(+/-)tz" // tz is in number of quarter-hours long start = SystemClock.elapsedRealtime(); if (DBG) {log("NITZ: " + nitz + "," + nitzReceiveTime + " start=" + start + " delay=" + (start - nitzReceiveTime)); } try { /* NITZ time (hour:min:sec) will be in UTC but it supplies the timezone * offset as well (which we won't worry about until later) */ Calendar c = Calendar.getInstance(TimeZone.getTimeZone("GMT")); c.clear(); c.set(Calendar.DST_OFFSET, 0); String[] nitzSubs = nitz.split("[/:,+-]"); int year = 2000 + Integer.parseInt(nitzSubs[0]); c.set(Calendar.YEAR, year); // month is 0 based! int month = Integer.parseInt(nitzSubs[1]) - 1; c.set(Calendar.MONTH, month); int date = Integer.parseInt(nitzSubs[2]); c.set(Calendar.DATE, date); int hour = Integer.parseInt(nitzSubs[3]); c.set(Calendar.HOUR, hour); int minute = Integer.parseInt(nitzSubs[4]); c.set(Calendar.MINUTE, minute); int second = Integer.parseInt(nitzSubs[5]); c.set(Calendar.SECOND, second); boolean sign = (nitz.indexOf('-') == -1); int tzOffset = Integer.parseInt(nitzSubs[6]); int dst = (nitzSubs.length >= 8 ) ? Integer.parseInt(nitzSubs[7]) : 0; // The zone offset received from NITZ is for current local time, // so DST correction is already applied. Don't add it again. // // tzOffset += dst * 4; // // We could unapply it if we wanted the raw offset. tzOffset = (sign ? 1 : -1) * tzOffset * 15 * 60 * 1000; TimeZone zone = null; // As a special extension, the Android emulator appends the name of // the host computer's timezone to the nitz string. this is zoneinfo // timezone name of the form Area!Location or Area!Location!SubLocation // so we need to convert the ! into / if (nitzSubs.length >= 9) { String tzname = nitzSubs[8].replace('!','/'); zone = TimeZone.getTimeZone( tzname ); } String iso = SystemProperties.get(TelephonyProperties.PROPERTY_OPERATOR_ISO_COUNTRY); if (zone == null) { if (mGotCountryCode) { if (iso != null && iso.length() > 0) { zone = TimeUtils.getTimeZone(tzOffset, dst != 0, c.getTimeInMillis(), iso); } else { // We don't have a valid iso country code. This is // most likely because we're on a test network that's // using a bogus MCC (eg, "001"), so get a TimeZone // based only on the NITZ parameters. zone = getNitzTimeZone(tzOffset, (dst != 0), c.getTimeInMillis()); } } } if (zone == null) { // We got the time before the country, so we don't know // how to identify the DST rules yet. Save the information // and hope to fix it up later. mNeedFixZone = true; mZoneOffset = tzOffset; mZoneDst = dst != 0; mZoneTime = c.getTimeInMillis(); } if (zone != null) { if (getAutoTimeZone()) { setAndBroadcastNetworkSetTimeZone(zone.getID()); } saveNitzTimeZone(zone.getID()); } String ignore = SystemProperties.get("gsm.ignore-nitz"); if (ignore != null && ignore.equals("yes")) { log("NITZ: Not setting clock because gsm.ignore-nitz is set"); return; } try { mWakeLock.acquire(); if (getAutoTime()) { long millisSinceNitzReceived = SystemClock.elapsedRealtime() - nitzReceiveTime; if (millisSinceNitzReceived < 0) { // Sanity check: something is wrong if (DBG) { log("NITZ: not setting time, clock has rolled " + "backwards since NITZ time was received, " + nitz); } return; } if (millisSinceNitzReceived > Integer.MAX_VALUE) { // If the time is this far off, something is wrong > 24 days! if (DBG) { log("NITZ: not setting time, processing has taken " + (millisSinceNitzReceived / (1000 * 60 * 60 * 24)) + " days"); } return; } // Note: with range checks above, cast to int is safe c.add(Calendar.MILLISECOND, (int)millisSinceNitzReceived); if (DBG) { log("NITZ: Setting time of day to " + c.getTime() + " NITZ receive delay(ms): " + millisSinceNitzReceived + " gained(ms): " + (c.getTimeInMillis() - System.currentTimeMillis()) + " from " + nitz); } setAndBroadcastNetworkSetTime(c.getTimeInMillis()); Log.i(LOG_TAG, "NITZ: after Setting time of day"); } SystemProperties.set("gsm.nitz.time", String.valueOf(c.getTimeInMillis())); saveNitzTime(c.getTimeInMillis()); if (false) { long end = SystemClock.elapsedRealtime(); log("NITZ: end=" + end + " dur=" + (end - start)); } } finally { mWakeLock.release(); } } catch (RuntimeException ex) { loge("NITZ: Parsing NITZ time " + nitz + " ex=" + ex); } } private boolean getAutoTime() { try { return Settings.System.getInt(phone.getContext().getContentResolver(), Settings.System.AUTO_TIME) > 0; } catch (SettingNotFoundException snfe) { return true; } } private boolean getAutoTimeZone() { try { return Settings.System.getInt(phone.getContext().getContentResolver(), Settings.System.AUTO_TIME_ZONE) > 0; } catch (SettingNotFoundException snfe) { return true; } } private void saveNitzTimeZone(String zoneId) { mSavedTimeZone = zoneId; } private void saveNitzTime(long time) { mSavedTime = time; mSavedAtTime = SystemClock.elapsedRealtime(); } /** * Set the timezone and send out a sticky broadcast so the system can * determine if the timezone was set by the carrier. * * @param zoneId timezone set by carrier */ private void setAndBroadcastNetworkSetTimeZone(String zoneId) { AlarmManager alarm = (AlarmManager) phone.getContext().getSystemService(Context.ALARM_SERVICE); alarm.setTimeZone(zoneId); Intent intent = new Intent(TelephonyIntents.ACTION_NETWORK_SET_TIMEZONE); intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); intent.putExtra("time-zone", zoneId); phone.getContext().sendStickyBroadcast(intent); } /** * Set the time and Send out a sticky broadcast so the system can determine * if the time was set by the carrier. * * @param time time set by network */ private void setAndBroadcastNetworkSetTime(long time) { SystemClock.setCurrentTimeMillis(time); Intent intent = new Intent(TelephonyIntents.ACTION_NETWORK_SET_TIME); intent.addFlags(Intent.FLAG_RECEIVER_REPLACE_PENDING); intent.putExtra("time", time); phone.getContext().sendStickyBroadcast(intent); } private void revertToNitzTime() { if (Settings.System.getInt(phone.getContext().getContentResolver(), Settings.System.AUTO_TIME, 0) == 0) { return; } if (DBG) { log("Reverting to NITZ Time: mSavedTime=" + mSavedTime + " mSavedAtTime=" + mSavedAtTime); } if (mSavedTime != 0 && mSavedAtTime != 0) { setAndBroadcastNetworkSetTime(mSavedTime + (SystemClock.elapsedRealtime() - mSavedAtTime)); } } private void revertToNitzTimeZone() { if (Settings.System.getInt(phone.getContext().getContentResolver(), Settings.System.AUTO_TIME_ZONE, 0) == 0) { return; } if (DBG) log("Reverting to NITZ TimeZone: tz='" + mSavedTimeZone); if (mSavedTimeZone != null) { setAndBroadcastNetworkSetTimeZone(mSavedTimeZone); } } /** * Post a notification to NotificationManager for restricted state * * @param notifyType is one state of PS/CS_*_ENABLE/DISABLE */ private void setNotification(int notifyType) { if (DBG) log("setNotification: create notification " + notifyType); Context context = phone.getContext(); mNotification = new Notification(); mNotification.when = System.currentTimeMillis(); mNotification.flags = Notification.FLAG_AUTO_CANCEL; mNotification.icon = com.android.internal.R.drawable.stat_sys_warning; Intent intent = new Intent(); mNotification.contentIntent = PendingIntent .getActivity(context, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT); CharSequence details = ""; CharSequence title = context.getText(com.android.internal.R.string.RestrictedChangedTitle); int notificationId = CS_NOTIFICATION; switch (notifyType) { case PS_ENABLED: notificationId = PS_NOTIFICATION; details = context.getText(com.android.internal.R.string.RestrictedOnData);; break; case PS_DISABLED: notificationId = PS_NOTIFICATION; break; case CS_ENABLED: details = context.getText(com.android.internal.R.string.RestrictedOnAllVoice);; break; case CS_NORMAL_ENABLED: details = context.getText(com.android.internal.R.string.RestrictedOnNormal);; break; case CS_EMERGENCY_ENABLED: details = context.getText(com.android.internal.R.string.RestrictedOnEmergency);; break; case CS_DISABLED: // do nothing and cancel the notification later break; } if (DBG) log("setNotification: put notification " + title + " / " +details); mNotification.tickerText = title; mNotification.setLatestEventInfo(context, title, details, mNotification.contentIntent); NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE); if (notifyType == PS_DISABLED || notifyType == CS_DISABLED) { // cancel previous post notification notificationManager.cancel(notificationId); } else { // update restricted state notification notificationManager.notify(notificationId, mNotification); } } @Override protected void log(String s) { Log.d(LOG_TAG, "[GsmSST] " + s); } @Override protected void loge(String s) { Log.e(LOG_TAG, "[GsmSST] " + s); } private static void sloge(String s) { Log.e(LOG_TAG, "[GsmSST] " + s); } }