/*
* 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 android.content.Context;
import android.os.AsyncResult;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.PowerManager;
import android.os.Registrant;
import android.os.SystemClock;
import android.telephony.DisconnectCause;
import android.telephony.Rlog;
import android.telephony.PhoneNumberUtils;
import android.telephony.ServiceState;
import android.text.TextUtils;
import com.android.internal.telephony.*;
import com.android.internal.telephony.uicc.UiccCardApplication;
import com.android.internal.telephony.uicc.UiccController;
import com.android.internal.telephony.uicc.IccCardApplicationStatus.AppState;
/**
* {@hide}
*/
public class GsmConnection extends Connection {
private static final String LOG_TAG = "GsmConnection";
private static final boolean DBG = true;
//***** Instance Variables
GsmCallTracker mOwner;
GsmCall mParent;
String mPostDialString; // outgoing calls only
boolean mDisconnected;
int mIndex; // index in GsmCallTracker.connections[], -1 if unassigned
// The GSM index is 1 + this
/*
* These time/timespan values are based on System.currentTimeMillis(),
* i.e., "wall clock" time.
*/
long mDisconnectTime;
int mNextPostDialChar; // index into postDialString
int mCause = DisconnectCause.NOT_DISCONNECTED;
PostDialState mPostDialState = PostDialState.NOT_STARTED;
UUSInfo mUusInfo;
int mPreciseCause = 0;
Connection mOrigConnection;
Handler mHandler;
private PowerManager.WakeLock mPartialWakeLock;
//***** Event Constants
static final int EVENT_DTMF_DONE = 1;
static final int EVENT_PAUSE_DONE = 2;
static final int EVENT_NEXT_POST_DIAL = 3;
static final int EVENT_WAKE_LOCK_TIMEOUT = 4;
//***** Constants
static final int PAUSE_DELAY_MILLIS = 3 * 1000;
static final int WAKE_LOCK_TIMEOUT_MILLIS = 60*1000;
//***** Inner Classes
class MyHandler extends Handler {
MyHandler(Looper l) {super(l);}
@Override
public void
handleMessage(Message msg) {
switch (msg.what) {
case EVENT_NEXT_POST_DIAL:
case EVENT_DTMF_DONE:
case EVENT_PAUSE_DONE:
processNextPostDialChar();
break;
case EVENT_WAKE_LOCK_TIMEOUT:
releaseWakeLock();
break;
}
}
}
//***** Constructors
/** This is probably an MT call that we first saw in a CLCC response */
/*package*/
GsmConnection (Context context, DriverCall dc, GsmCallTracker ct, int index) {
createWakeLock(context);
acquireWakeLock();
mOwner = ct;
mHandler = new MyHandler(mOwner.getLooper());
mAddress = dc.number;
mIsIncoming = dc.isMT;
mCreateTime = System.currentTimeMillis();
mCnapName = dc.name;
mCnapNamePresentation = dc.namePresentation;
mNumberPresentation = dc.numberPresentation;
mUusInfo = dc.uusInfo;
mIndex = index;
mParent = parentFromDCState (dc.state);
mParent.attach(this, dc);
}
/** This is an MO call, created when dialing */
/*package*/
GsmConnection (Context context, String dialString, GsmCallTracker ct, GsmCall parent) {
createWakeLock(context);
acquireWakeLock();
mOwner = ct;
mHandler = new MyHandler(mOwner.getLooper());
mDialString = dialString;
mAddress = PhoneNumberUtils.extractNetworkPortionAlt(dialString);
mPostDialString = PhoneNumberUtils.extractPostDialPortion(dialString);
mIndex = -1;
mIsIncoming = false;
mCnapName = null;
mCnapNamePresentation = PhoneConstants.PRESENTATION_ALLOWED;
mNumberPresentation = PhoneConstants.PRESENTATION_ALLOWED;
mCreateTime = System.currentTimeMillis();
mParent = parent;
parent.attachFake(this, GsmCall.State.DIALING);
}
public void dispose() {
}
static boolean
equalsHandlesNulls (Object a, Object b) {
return (a == null) ? (b == null) : a.equals (b);
}
/*package*/ boolean
compareTo(DriverCall c) {
// On mobile originated (MO) calls, the phone number may have changed
// due to a SIM Toolkit call control modification.
//
// We assume we know when MO calls are created (since we created them)
// and therefore don't need to compare the phone number anyway.
if (! (mIsIncoming || c.isMT)) return true;
// A new call appearing by SRVCC may have invalid number
// if IMS service is not tightly coupled with cellular modem stack.
// Thus we prefer the preexisting handover connection instance.
if (mOrigConnection != null) return true;
// ... but we can compare phone numbers on MT calls, and we have
// no control over when they begin, so we might as well
String cAddress = PhoneNumberUtils.stringFromStringAndTOA(c.number, c.TOA);
return mIsIncoming == c.isMT && equalsHandlesNulls(mAddress, cAddress);
}
@Override
public GsmCall getCall() {
return mParent;
}
@Override
public long getDisconnectTime() {
return mDisconnectTime;
}
@Override
public long getHoldDurationMillis() {
if (getState() != GsmCall.State.HOLDING) {
// If not holding, return 0
return 0;
} else {
return SystemClock.elapsedRealtime() - mHoldingStartTime;
}
}
@Override
public int getDisconnectCause() {
return mCause;
}
@Override
public GsmCall.State getState() {
if (mDisconnected) {
return GsmCall.State.DISCONNECTED;
} else {
return super.getState();
}
}
@Override
public void hangup() throws CallStateException {
if (!mDisconnected) {
mOwner.hangup(this);
} else {
throw new CallStateException ("disconnected");
}
}
@Override
public void separate() throws CallStateException {
if (!mDisconnected) {
mOwner.separate(this);
} else {
throw new CallStateException ("disconnected");
}
}
@Override
public PostDialState getPostDialState() {
return mPostDialState;
}
@Override
public void proceedAfterWaitChar() {
if (mPostDialState != PostDialState.WAIT) {
Rlog.w(LOG_TAG, "GsmConnection.proceedAfterWaitChar(): Expected "
+ "getPostDialState() to be WAIT but was " + mPostDialState);
return;
}
setPostDialState(PostDialState.STARTED);
processNextPostDialChar();
}
@Override
public void proceedAfterWildChar(String str) {
if (mPostDialState != PostDialState.WILD) {
Rlog.w(LOG_TAG, "GsmConnection.proceedAfterWaitChar(): Expected "
+ "getPostDialState() to be WILD but was " + mPostDialState);
return;
}
setPostDialState(PostDialState.STARTED);
// make a new postDialString, with the wild char replacement string
// at the beginning, followed by the remaining postDialString.
StringBuilder buf = new StringBuilder(str);
buf.append(mPostDialString.substring(mNextPostDialChar));
mPostDialString = buf.toString();
mNextPostDialChar = 0;
if (Phone.DEBUG_PHONE) {
log("proceedAfterWildChar: new postDialString is " +
mPostDialString);
}
processNextPostDialChar();
}
@Override
public void cancelPostDial() {
setPostDialState(PostDialState.CANCELLED);
}
/**
* Called when this Connection is being hung up locally (eg, user pressed "end")
* Note that at this point, the hangup request has been dispatched to the radio
* but no response has yet been received so update() has not yet been called
*/
void
onHangupLocal() {
mCause = DisconnectCause.LOCAL;
mPreciseCause = 0;
}
/**
* Maps RIL call disconnect code to {@link DisconnectCause}.
* @param causeCode RIL disconnect code
* @return the corresponding value from {@link DisconnectCause}
*/
int disconnectCauseFromCode(int causeCode) {
/**
* See 22.001 Annex F.4 for mapping of cause codes
* to local tones
*/
switch (causeCode) {
case CallFailCause.USER_BUSY:
return DisconnectCause.BUSY;
case CallFailCause.NO_CIRCUIT_AVAIL:
case CallFailCause.TEMPORARY_FAILURE:
case CallFailCause.SWITCHING_CONGESTION:
case CallFailCause.CHANNEL_NOT_AVAIL:
case CallFailCause.QOS_NOT_AVAIL:
case CallFailCause.BEARER_NOT_AVAIL:
return DisconnectCause.CONGESTION;
case CallFailCause.ACM_LIMIT_EXCEEDED:
return DisconnectCause.LIMIT_EXCEEDED;
case CallFailCause.CALL_BARRED:
return DisconnectCause.CALL_BARRED;
case CallFailCause.FDN_BLOCKED:
return DisconnectCause.FDN_BLOCKED;
case CallFailCause.UNOBTAINABLE_NUMBER:
return DisconnectCause.UNOBTAINABLE_NUMBER;
case CallFailCause.DIAL_MODIFIED_TO_USSD:
return DisconnectCause.DIAL_MODIFIED_TO_USSD;
case CallFailCause.DIAL_MODIFIED_TO_SS:
return DisconnectCause.DIAL_MODIFIED_TO_SS;
case CallFailCause.DIAL_MODIFIED_TO_DIAL:
return DisconnectCause.DIAL_MODIFIED_TO_DIAL;
case CallFailCause.ERROR_UNSPECIFIED:
case CallFailCause.NORMAL_CLEARING:
default:
GSMPhone phone = mOwner.mPhone;
int serviceState = phone.getServiceState().getState();
UiccCardApplication cardApp = phone.getUiccCardApplication();
AppState uiccAppState = (cardApp != null) ? cardApp.getState() :
AppState.APPSTATE_UNKNOWN;
if (serviceState == ServiceState.STATE_POWER_OFF) {
return DisconnectCause.POWER_OFF;
} else if (serviceState == ServiceState.STATE_OUT_OF_SERVICE
|| serviceState == ServiceState.STATE_EMERGENCY_ONLY ) {
return DisconnectCause.OUT_OF_SERVICE;
} else if (uiccAppState != AppState.APPSTATE_READY) {
return DisconnectCause.ICC_ERROR;
} else if (causeCode == CallFailCause.ERROR_UNSPECIFIED) {
if (phone.mSST.mRestrictedState.isCsRestricted()) {
return DisconnectCause.CS_RESTRICTED;
} else if (phone.mSST.mRestrictedState.isCsEmergencyRestricted()) {
return DisconnectCause.CS_RESTRICTED_EMERGENCY;
} else if (phone.mSST.mRestrictedState.isCsNormalRestricted()) {
return DisconnectCause.CS_RESTRICTED_NORMAL;
} else {
return DisconnectCause.ERROR_UNSPECIFIED;
}
} else if (causeCode == CallFailCause.NORMAL_CLEARING) {
return DisconnectCause.NORMAL;
} else {
// If nothing else matches, report unknown call drop reason
// to app, not NORMAL call end.
return DisconnectCause.ERROR_UNSPECIFIED;
}
}
}
/*package*/ void
onRemoteDisconnect(int causeCode) {
this.mPreciseCause = causeCode;
onDisconnect(disconnectCauseFromCode(causeCode));
}
/**
* Called when the radio indicates the connection has been disconnected.
* @param cause call disconnect cause; values are defined in {@link DisconnectCause}
*/
/*package*/ boolean onDisconnect(int cause) {
boolean changed = false;
mCause = cause;
if (!mDisconnected) {
mIndex = -1;
mDisconnectTime = System.currentTimeMillis();
mDuration = SystemClock.elapsedRealtime() - mConnectTimeReal;
mDisconnected = true;
if (DBG) Rlog.d(LOG_TAG, "onDisconnect: cause=" + cause);
mOwner.mPhone.notifyDisconnect(this);
if (mParent != null) {
changed = mParent.connectionDisconnected(this);
}
mOrigConnection = null;
}
clearPostDialListeners();
releaseWakeLock();
return changed;
}
// Returns true if state has changed, false if nothing changed
/*package*/ boolean
update (DriverCall dc) {
GsmCall newParent;
boolean changed = false;
boolean wasConnectingInOrOut = isConnectingInOrOut();
boolean wasHolding = (getState() == GsmCall.State.HOLDING);
newParent = parentFromDCState(dc.state);
//Ignore dc.number and dc.name in case of a handover connection
if (mOrigConnection != null) {
if (Phone.DEBUG_PHONE) log("update: mOrigConnection is not null");
} else {
log(" mNumberConverted " + mNumberConverted);
if (!equalsHandlesNulls(mAddress, dc.number) && (!mNumberConverted
|| !equalsHandlesNulls(mConvertedNumber, dc.number))) {
if (Phone.DEBUG_PHONE) log("update: phone # changed!");
mAddress = dc.number;
changed = true;
}
}
// A null cnapName should be the same as ""
if (TextUtils.isEmpty(dc.name)) {
if (!TextUtils.isEmpty(mCnapName)) {
changed = true;
mCnapName = "";
}
} else if (!dc.name.equals(mCnapName)) {
changed = true;
mCnapName = dc.name;
}
if (Phone.DEBUG_PHONE) log("--dssds----"+mCnapName);
mCnapNamePresentation = dc.namePresentation;
mNumberPresentation = dc.numberPresentation;
if (newParent != mParent) {
if (mParent != null) {
mParent.detach(this);
}
newParent.attach(this, dc);
mParent = newParent;
changed = true;
} else {
boolean parentStateChange;
parentStateChange = mParent.update (this, dc);
changed = changed || parentStateChange;
}
/** Some state-transition events */
if (Phone.DEBUG_PHONE) log(
"update: parent=" + mParent +
", hasNewParent=" + (newParent != mParent) +
", wasConnectingInOrOut=" + wasConnectingInOrOut +
", wasHolding=" + wasHolding +
", isConnectingInOrOut=" + isConnectingInOrOut() +
", changed=" + changed);
if (wasConnectingInOrOut && !isConnectingInOrOut()) {
onConnectedInOrOut();
}
if (changed && !wasHolding && (getState() == GsmCall.State.HOLDING)) {
// We've transitioned into HOLDING
onStartedHolding();
}
return changed;
}
/**
* Called when this Connection is in the foregroundCall
* when a dial is initiated.
* We know we're ACTIVE, and we know we're going to end up
* HOLDING in the backgroundCall
*/
void
fakeHoldBeforeDial() {
if (mParent != null) {
mParent.detach(this);
}
mParent = mOwner.mBackgroundCall;
mParent.attachFake(this, GsmCall.State.HOLDING);
onStartedHolding();
}
/*package*/ int
getGSMIndex() throws CallStateException {
if (mIndex >= 0) {
return mIndex + 1;
} else {
throw new CallStateException ("GSM index not yet assigned");
}
}
/**
* An incoming or outgoing call has connected
*/
void
onConnectedInOrOut() {
mConnectTime = System.currentTimeMillis();
mConnectTimeReal = SystemClock.elapsedRealtime();
mDuration = 0;
// bug #678474: incoming call interpreted as missed call, even though
// it sounds like the user has picked up the call.
if (Phone.DEBUG_PHONE) {
log("onConnectedInOrOut: connectTime=" + mConnectTime);
}
if (!mIsIncoming) {
// outgoing calls only
processNextPostDialChar();
}
releaseWakeLock();
}
/*package*/ void
onStartedHolding() {
mHoldingStartTime = SystemClock.elapsedRealtime();
}
/**
* Performs the appropriate action for a post-dial char, but does not
* notify application. returns false if the character is invalid and
* should be ignored
*/
private boolean
processPostDialChar(char c) {
if (PhoneNumberUtils.is12Key(c)) {
mOwner.mCi.sendDtmf(c, mHandler.obtainMessage(EVENT_DTMF_DONE));
} else if (c == PhoneNumberUtils.PAUSE) {
// From TS 22.101:
// It continues...
// Upon the called party answering the UE shall send the DTMF digits
// automatically to the network after a delay of 3 seconds( 20 ).
// The digits shall be sent according to the procedures and timing
// specified in 3GPP TS 24.008 [13]. The first occurrence of the
// "DTMF Control Digits Separator" shall be used by the ME to
// distinguish between the addressing digits (i.e. the phone number)
// and the DTMF digits. Upon subsequent occurrences of the
// separator,
// the UE shall pause again for 3 seconds ( 20 ) before sending
// any further DTMF digits.
mHandler.sendMessageDelayed(mHandler.obtainMessage(EVENT_PAUSE_DONE),
PAUSE_DELAY_MILLIS);
} else if (c == PhoneNumberUtils.WAIT) {
setPostDialState(PostDialState.WAIT);
} else if (c == PhoneNumberUtils.WILD) {
setPostDialState(PostDialState.WILD);
} else {
return false;
}
return true;
}
@Override
public String
getRemainingPostDialString() {
if (mPostDialState == PostDialState.CANCELLED
|| mPostDialState == PostDialState.COMPLETE
|| mPostDialString == null
|| mPostDialString.length() <= mNextPostDialChar
) {
return "";
}
return mPostDialString.substring(mNextPostDialChar);
}
@Override
protected void finalize()
{
/**
* It is understood that This finializer is not guaranteed
* to be called and the release lock call is here just in
* case there is some path that doesn't call onDisconnect
* and or onConnectedInOrOut.
*/
if (mPartialWakeLock.isHeld()) {
Rlog.e(LOG_TAG, "[GSMConn] UNEXPECTED; mPartialWakeLock is held when finalizing.");
}
clearPostDialListeners();
releaseWakeLock();
}
private void
processNextPostDialChar() {
char c = 0;
Registrant postDialHandler;
if (mPostDialState == PostDialState.CANCELLED) {
//Rlog.v("GSM", "##### processNextPostDialChar: postDialState == CANCELLED, bail");
return;
}
if (mPostDialString == null ||
mPostDialString.length() <= mNextPostDialChar) {
setPostDialState(PostDialState.COMPLETE);
// notifyMessage.arg1 is 0 on complete
c = 0;
} else {
boolean isValid;
setPostDialState(PostDialState.STARTED);
c = mPostDialString.charAt(mNextPostDialChar++);
isValid = processPostDialChar(c);
if (!isValid) {
// Will call processNextPostDialChar
mHandler.obtainMessage(EVENT_NEXT_POST_DIAL).sendToTarget();
// Don't notify application
Rlog.e("GSM", "processNextPostDialChar: c=" + c + " isn't valid!");
return;
}
}
notifyPostDialListenersNextChar(c);
// TODO: remove the following code since the handler no longer executes anything.
postDialHandler = mOwner.mPhone.mPostDialHandler;
Message notifyMessage;
if (postDialHandler != null
&& (notifyMessage = postDialHandler.messageForRegistrant()) != null) {
// The AsyncResult.result is the Connection object
PostDialState state = mPostDialState;
AsyncResult ar = AsyncResult.forMessage(notifyMessage);
ar.result = this;
ar.userObj = state;
// arg1 is the character that was/is being processed
notifyMessage.arg1 = c;
//Rlog.v("GSM", "##### processNextPostDialChar: send msg to postDialHandler, arg1=" + c);
notifyMessage.sendToTarget();
}
}
/** "connecting" means "has never been ACTIVE" for both incoming
* and outgoing calls
*/
private boolean
isConnectingInOrOut() {
return mParent == null || mParent == mOwner.mRingingCall
|| mParent.mState == GsmCall.State.DIALING
|| mParent.mState == GsmCall.State.ALERTING;
}
private GsmCall
parentFromDCState (DriverCall.State state) {
switch (state) {
case ACTIVE:
case DIALING:
case ALERTING:
return mOwner.mForegroundCall;
//break;
case HOLDING:
return mOwner.mBackgroundCall;
//break;
case INCOMING:
case WAITING:
return mOwner.mRingingCall;
//break;
default:
throw new RuntimeException("illegal call state: " + state);
}
}
/**
* Set post dial state and acquire wake lock while switching to "started"
* state, the wake lock will be released if state switches out of "started"
* state or after WAKE_LOCK_TIMEOUT_MILLIS.
* @param s new PostDialState
*/
private void setPostDialState(PostDialState s) {
if (mPostDialState != PostDialState.STARTED
&& s == PostDialState.STARTED) {
acquireWakeLock();
Message msg = mHandler.obtainMessage(EVENT_WAKE_LOCK_TIMEOUT);
mHandler.sendMessageDelayed(msg, WAKE_LOCK_TIMEOUT_MILLIS);
} else if (mPostDialState == PostDialState.STARTED
&& s != PostDialState.STARTED) {
mHandler.removeMessages(EVENT_WAKE_LOCK_TIMEOUT);
releaseWakeLock();
}
mPostDialState = s;
notifyPostDialListeners();
}
private void
createWakeLock(Context context) {
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
mPartialWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, LOG_TAG);
}
private void
acquireWakeLock() {
log("acquireWakeLock");
mPartialWakeLock.acquire();
}
private void
releaseWakeLock() {
synchronized(mPartialWakeLock) {
if (mPartialWakeLock.isHeld()) {
log("releaseWakeLock");
mPartialWakeLock.release();
}
}
}
private void log(String msg) {
Rlog.d(LOG_TAG, "[GSMConn] " + msg);
}
@Override
public int getNumberPresentation() {
return mNumberPresentation;
}
@Override
public UUSInfo getUUSInfo() {
return mUusInfo;
}
public int getPreciseDisconnectCause() {
return mPreciseCause;
}
@Override
public void migrateFrom(Connection c) {
if (c == null) return;
super.migrateFrom(c);
this.mUusInfo = c.getUUSInfo();
this.setUserData(c.getUserData());
}
@Override
public Connection getOrigConnection() {
return mOrigConnection;
}
@Override
public boolean isMultiparty() {
if (mOrigConnection != null) {
return mOrigConnection.isMultiparty();
}
return false;
}
}
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