/*
* Copyright (C) 2008 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.phone;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.net.Uri;
import android.os.Bundle;
import android.os.SystemProperties;
import android.telephony.PhoneNumberUtils;
import android.text.TextUtils;
import android.util.Log;
import com.android.internal.telephony.Phone;
/**
* OutgoingCallBroadcaster receives CALL and CALL_PRIVILEGED Intents, and
* broadcasts the ACTION_NEW_OUTGOING_CALL intent which allows other
* applications to monitor, redirect, or prevent the outgoing call.
* After the other applications have had a chance to see the
* ACTION_NEW_OUTGOING_CALL intent, it finally reaches the
* {@link OutgoingCallReceiver}, which passes the (possibly modified)
* intent on to the {@link InCallScreen}.
*
* Emergency calls and calls where no number is present (like for a CDMA
* "empty flash" or a nonexistent voicemail number) are exempt from being
* broadcast.
*/
public class OutgoingCallBroadcaster extends Activity {
private static final String PERMISSION = android.Manifest.permission.PROCESS_OUTGOING_CALLS;
private static final String TAG = "OutgoingCallBroadcaster";
private static final boolean DBG =
(PhoneApp.DBG_LEVEL >= 1) && (SystemProperties.getInt("ro.debuggable", 0) == 1);
public static final String EXTRA_ALREADY_CALLED = "android.phone.extra.ALREADY_CALLED";
public static final String EXTRA_ORIGINAL_URI = "android.phone.extra.ORIGINAL_URI";
public static final String EXTRA_NEW_CALL_INTENT = "android.phone.extra.NEW_CALL_INTENT";
public static final String EXTRA_SIP_PHONE_URI = "android.phone.extra.SIP_PHONE_URI";
/**
* Identifier for intent extra for sending an empty Flash message for
* CDMA networks. This message is used by the network to simulate a
* press/depress of the "hookswitch" of a landline phone. Aka "empty flash".
*
* TODO: Receiving an intent extra to tell the phone to send this flash is a
* temporary measure. To be replaced with an external ITelephony call in the future.
* TODO: Keep in sync with the string defined in TwelveKeyDialer.java in Contacts app
* until this is replaced with the ITelephony API.
*/
public static final String EXTRA_SEND_EMPTY_FLASH = "com.android.phone.extra.SEND_EMPTY_FLASH";
/**
* OutgoingCallReceiver finishes NEW_OUTGOING_CALL broadcasts, starting
* the InCallScreen if the broadcast has not been canceled, possibly with
* a modified phone number and optional provider info (uri + package name + remote views.)
*/
public class OutgoingCallReceiver extends BroadcastReceiver {
private static final String TAG = "OutgoingCallReceiver";
public void onReceive(Context context, Intent intent) {
doReceive(context, intent);
finish();
}
public void doReceive(Context context, Intent intent) {
if (DBG) Log.v(TAG, "doReceive: " + intent);
boolean alreadyCalled;
String number;
String originalUri;
alreadyCalled = intent.getBooleanExtra(
OutgoingCallBroadcaster.EXTRA_ALREADY_CALLED, false);
if (alreadyCalled) {
if (DBG) Log.v(TAG, "CALL already placed -- returning.");
return;
}
number = getResultData();
final PhoneApp app = PhoneApp.getInstance();
if (TelephonyCapabilities.supportsOtasp(app.phone)) {
boolean activateState = (app.cdmaOtaScreenState.otaScreenState
== OtaUtils.CdmaOtaScreenState.OtaScreenState.OTA_STATUS_ACTIVATION);
boolean dialogState = (app.cdmaOtaScreenState.otaScreenState
== OtaUtils.CdmaOtaScreenState.OtaScreenState
.OTA_STATUS_SUCCESS_FAILURE_DLG);
boolean isOtaCallActive = false;
if ((app.cdmaOtaScreenState.otaScreenState
== OtaUtils.CdmaOtaScreenState.OtaScreenState.OTA_STATUS_PROGRESS)
|| (app.cdmaOtaScreenState.otaScreenState
== OtaUtils.CdmaOtaScreenState.OtaScreenState.OTA_STATUS_LISTENING)) {
isOtaCallActive = true;
}
if (activateState || dialogState) {
if (dialogState) app.dismissOtaDialogs();
app.clearOtaState();
app.clearInCallScreenMode();
} else if (isOtaCallActive) {
if (DBG) Log.v(TAG, "OTA call is active, a 2nd CALL cancelled -- returning.");
return;
}
}
if (number == null) {
if (DBG) Log.v(TAG, "CALL cancelled (null number), returning...");
return;
} else if (TelephonyCapabilities.supportsOtasp(app.phone)
&& (app.phone.getState() != Phone.State.IDLE)
&& (app.phone.isOtaSpNumber(number))) {
if (DBG) Log.v(TAG, "Call is active, a 2nd OTA call cancelled -- returning.");
return;
} else if (PhoneNumberUtils.isEmergencyNumber(number)) {
Log.w(TAG, "Cannot modify outgoing call to emergency number " + number + ".");
return;
}
originalUri = intent.getStringExtra(
OutgoingCallBroadcaster.EXTRA_ORIGINAL_URI);
if (originalUri == null) {
Log.e(TAG, "Intent is missing EXTRA_ORIGINAL_URI -- returning.");
return;
}
Uri uri = Uri.parse(originalUri);
// Since the number could be modified/rewritten by the broadcast,
// we have to strip the unwanted characters here.
number = PhoneNumberUtils.stripSeparators(
PhoneNumberUtils.convertKeypadLettersToDigits(number));
if (DBG) Log.v(TAG, "CALL to " + /*number*/ "xxxxxxx" + " proceeding.");
startSipCallOptionsHandler(context, intent, uri, number);
}
}
private void startSipCallOptionsHandler(Context context, Intent intent,
Uri uri, String number) {
Intent newIntent = new Intent(Intent.ACTION_CALL, uri);
newIntent.putExtra(Intent.EXTRA_PHONE_NUMBER, number);
PhoneUtils.checkAndCopyPhoneProviderExtras(intent, newIntent);
newIntent.setClass(context, InCallScreen.class);
newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Intent selectPhoneIntent = new Intent(EXTRA_NEW_CALL_INTENT, uri);
selectPhoneIntent.setClass(context, SipCallOptionHandler.class);
selectPhoneIntent.putExtra(EXTRA_NEW_CALL_INTENT, newIntent);
selectPhoneIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (DBG) Log.v(TAG, "startSipCallOptionsHandler(): " +
"calling startActivity: " + selectPhoneIntent);
context.startActivity(selectPhoneIntent);
}
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
Intent intent = getIntent();
final Configuration configuration = getResources().getConfiguration();
if (DBG) Log.v(TAG, "onCreate: this = " + this + ", icicle = " + icicle);
if (DBG) Log.v(TAG, " - getIntent() = " + intent);
if (DBG) Log.v(TAG, " - configuration = " + configuration);
if (icicle != null) {
// A non-null icicle means that this activity is being
// re-initialized after previously being shut down.
//
// In practice this happens very rarely (because the lifetime
// of this activity is so short!), but it *can* happen if the
// framework detects a configuration change at exactly the
// right moment; see bug 2202413.
//
// In this case, do nothing. Our onCreate() method has already
// run once (with icicle==null the first time), which means
// that the NEW_OUTGOING_CALL broadcast for this new call has
// already been sent.
Log.i(TAG, "onCreate: non-null icicle! "
+ "Bailing out, not sending NEW_OUTGOING_CALL broadcast...");
// No need to finish() here, since the OutgoingCallReceiver from
// our original instance will do that. (It'll actually call
// finish() on our original instance, which apparently works fine
// even though the ActivityManager has already shut that instance
// down. And note that if we *do* call finish() here, that just
// results in an "ActivityManager: Duplicate finish request"
// warning when the OutgoingCallReceiver runs.)
return;
}
String action = intent.getAction();
String number = PhoneNumberUtils.getNumberFromIntent(intent, this);
// Check the number, don't convert for sip uri
// TODO put uriNumber under PhoneNumberUtils
if (number != null) {
if (!PhoneNumberUtils.isUriNumber(number)) {
number = PhoneNumberUtils.convertKeypadLettersToDigits(number);
number = PhoneNumberUtils.stripSeparators(number);
}
}
final boolean emergencyNumber =
(number != null) && PhoneNumberUtils.isEmergencyNumber(number);
boolean callNow;
if (getClass().getName().equals(intent.getComponent().getClassName())) {
// If we were launched directly from the OutgoingCallBroadcaster,
// not one of its more privileged aliases, then make sure that
// only the non-privileged actions are allowed.
if (!Intent.ACTION_CALL.equals(intent.getAction())) {
Log.w(TAG, "Attempt to deliver non-CALL action; forcing to CALL");
intent.setAction(Intent.ACTION_CALL);
}
}
/* Change CALL_PRIVILEGED into CALL or CALL_EMERGENCY as needed. */
// TODO: This code is redundant with some code in InCallScreen: refactor.
if (Intent.ACTION_CALL_PRIVILEGED.equals(action)) {
action = emergencyNumber
? Intent.ACTION_CALL_EMERGENCY
: Intent.ACTION_CALL;
if (DBG) Log.v(TAG, "- updating action from CALL_PRIVILEGED to " + action);
intent.setAction(action);
}
if (Intent.ACTION_CALL.equals(action)) {
if (emergencyNumber) {
Log.w(TAG, "Cannot call emergency number " + number
+ " with CALL Intent " + intent + ".");
Intent invokeFrameworkDialer = new Intent();
// TwelveKeyDialer is in a tab so we really want
// DialtactsActivity. Build the intent 'manually' to
// use the java resolver to find the dialer class (as
// opposed to a Context which look up known android
// packages only)
invokeFrameworkDialer.setClassName("com.android.contacts",
"com.android.contacts.DialtactsActivity");
invokeFrameworkDialer.setAction(Intent.ACTION_DIAL);
invokeFrameworkDialer.setData(intent.getData());
if (DBG) Log.v(TAG, "onCreate(): calling startActivity for Dialer: "
+ invokeFrameworkDialer);
startActivity(invokeFrameworkDialer);
finish();
return;
}
callNow = false;
} else if (Intent.ACTION_CALL_EMERGENCY.equals(action)) {
// ACTION_CALL_EMERGENCY case: this is either a CALL_PRIVILEGED
// intent that we just turned into a CALL_EMERGENCY intent (see
// above), or else it really is an CALL_EMERGENCY intent that
// came directly from some other app (e.g. the EmergencyDialer
// activity built in to the Phone app.)
if (!emergencyNumber) {
Log.w(TAG, "Cannot call non-emergency number " + number
+ " with EMERGENCY_CALL Intent " + intent + ".");
finish();
return;
}
callNow = true;
} else {
Log.e(TAG, "Unhandled Intent " + intent + ".");
finish();
return;
}
// Make sure the screen is turned on. This is probably the right
// thing to do, and more importantly it works around an issue in the
// activity manager where we will not launch activities consistently
// when the screen is off (since it is trying to keep them paused
// and has... issues).
//
// Also, this ensures the device stays awake while doing the following
// broadcast; technically we should be holding a wake lock here
// as well.
PhoneApp.getInstance().wakeUpScreen();
/* If number is null, we're probably trying to call a non-existent voicemail number,
* send an empty flash or something else is fishy. Whatever the problem, there's no
* number, so there's no point in allowing apps to modify the number. */
if (number == null || TextUtils.isEmpty(number)) {
if (intent.getBooleanExtra(EXTRA_SEND_EMPTY_FLASH, false)) {
Log.i(TAG, "onCreate: SEND_EMPTY_FLASH...");
PhoneUtils.sendEmptyFlash(PhoneApp.getPhone());
finish();
return;
} else {
Log.i(TAG, "onCreate: null or empty number, setting callNow=true...");
callNow = true;
}
}
if (callNow) {
intent.setClass(this, InCallScreen.class);
if (DBG) Log.v(TAG, "onCreate(): callNow case, calling startActivity: " + intent);
startActivity(intent);
}
// For now, SIP calls will be processed directly without a
// NEW_OUTGOING_CALL broadcast.
//
// TODO: In the future, though, 3rd party apps *should* be allowed to
// intercept outgoing calls to SIP addresses as well. To do this, we should
// (1) update the NEW_OUTGOING_CALL intent documentation to explain this
// case, and (2) pass the outgoing SIP address by *not* overloading the
// EXTRA_PHONE_NUMBER extra, but instead using a new separate extra to hold
// the outgoing SIP address. (Be sure to document whether it's a URI or just
// a plain address, whether it could be a tel: URI, etc.)
Uri uri = intent.getData();
String scheme = uri.getScheme();
if ("sip".equals(scheme) || PhoneNumberUtils.isUriNumber(number)) {
startSipCallOptionsHandler(this, intent, uri, number);
finish();
return;
}
Intent broadcastIntent = new Intent(Intent.ACTION_NEW_OUTGOING_CALL);
if (number != null) {
broadcastIntent.putExtra(Intent.EXTRA_PHONE_NUMBER, number);
}
PhoneUtils.checkAndCopyPhoneProviderExtras(intent, broadcastIntent);
broadcastIntent.putExtra(EXTRA_ALREADY_CALLED, callNow);
broadcastIntent.putExtra(EXTRA_ORIGINAL_URI, uri.toString());
if (DBG) Log.v(TAG, "Broadcasting intent: " + broadcastIntent + ".");
sendOrderedBroadcast(broadcastIntent, PERMISSION, new OutgoingCallReceiver(),
null, Activity.RESULT_OK, number, null);
}
// Implement onConfigurationChanged() purely for debugging purposes,
// to make sure that the android:configChanges element in our manifest
// is working properly.
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if (DBG) Log.v(TAG, "onConfigurationChanged: newConfig = " + newConfig);
}
}