session-android/src/org/thoughtcrime/securesms/WebRtcCallActivity.java

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/*
* Copyright (C) 2016 Open Whisper Systems
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.thoughtcrime.securesms;
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import android.Manifest;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.res.Configuration;
import android.media.AudioManager;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
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import org.greenrobot.eventbus.EventBus;
import org.greenrobot.eventbus.Subscribe;
import org.greenrobot.eventbus.ThreadMode;
import org.thoughtcrime.securesms.components.webrtc.WebRtcAnswerDeclineButton;
import org.thoughtcrime.securesms.components.webrtc.WebRtcCallControls;
import org.thoughtcrime.securesms.components.webrtc.WebRtcCallScreen;
import org.thoughtcrime.securesms.crypto.storage.TextSecureIdentityKeyStore;
import org.thoughtcrime.securesms.events.WebRtcViewModel;
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import org.thoughtcrime.securesms.permissions.Permissions;
import org.thoughtcrime.securesms.push.SignalServiceNetworkAccess;
import org.thoughtcrime.securesms.recipients.Recipient;
import org.thoughtcrime.securesms.service.MessageRetrievalService;
import org.thoughtcrime.securesms.service.WebRtcCallService;
import org.thoughtcrime.securesms.util.ServiceUtil;
import org.thoughtcrime.securesms.util.TextSecurePreferences;
import org.thoughtcrime.securesms.util.ViewUtil;
import org.thoughtcrime.securesms.webrtc.CameraState;
import org.whispersystems.libsignal.IdentityKey;
import org.whispersystems.libsignal.SignalProtocolAddress;
import static org.whispersystems.libsignal.SessionCipher.SESSION_LOCK;
public class WebRtcCallActivity extends Activity {
private static final String TAG = WebRtcCallActivity.class.getSimpleName();
private static final int STANDARD_DELAY_FINISH = 1000;
public static final int BUSY_SIGNAL_DELAY_FINISH = 5500;
public static final String ANSWER_ACTION = WebRtcCallActivity.class.getCanonicalName() + ".ANSWER_ACTION";
public static final String DENY_ACTION = WebRtcCallActivity.class.getCanonicalName() + ".DENY_ACTION";
public static final String END_CALL_ACTION = WebRtcCallActivity.class.getCanonicalName() + ".END_CALL_ACTION";
private WebRtcCallScreen callScreen;
private SignalServiceNetworkAccess networkAccess;
@Override
public void onCreate(Bundle savedInstanceState) {
Log.w(TAG, "onCreate()");
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.webrtc_call_activity);
setVolumeControlStream(AudioManager.STREAM_VOICE_CALL);
initializeResources();
}
@Override
public void onResume() {
Log.w(TAG, "onResume()");
super.onResume();
if (!networkAccess.isCensored(this)) MessageRetrievalService.registerActivityStarted(this);
initializeScreenshotSecurity();
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EventBus.getDefault().register(this);
}
@Override
public void onNewIntent(Intent intent){
Log.w(TAG, "onNewIntent");
if (ANSWER_ACTION.equals(intent.getAction())) {
handleAnswerCall();
} else if (DENY_ACTION.equals(intent.getAction())) {
handleDenyCall();
} else if (END_CALL_ACTION.equals(intent.getAction())) {
handleEndCall();
}
}
@Override
public void onPause() {
Log.w(TAG, "onPause");
super.onPause();
if (!networkAccess.isCensored(this)) MessageRetrievalService.registerActivityStopped(this);
EventBus.getDefault().unregister(this);
}
@Override
public void onConfigurationChanged(Configuration newConfiguration) {
super.onConfigurationChanged(newConfiguration);
}
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@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
Permissions.onRequestPermissionsResult(this, requestCode, permissions, grantResults);
}
private void initializeScreenshotSecurity() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH &&
TextSecurePreferences.isScreenSecurityEnabled(this))
{
getWindow().addFlags(WindowManager.LayoutParams.FLAG_SECURE);
} else {
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SECURE);
}
}
private void initializeResources() {
callScreen = ViewUtil.findById(this, R.id.callScreen);
callScreen.setHangupButtonListener(new HangupButtonListener());
callScreen.setIncomingCallActionListener(new IncomingCallActionListener());
callScreen.setAudioMuteButtonListener(new AudioMuteButtonListener());
callScreen.setVideoMuteButtonListener(new VideoMuteButtonListener());
callScreen.setCameraFlipButtonListener(new CameraFlipButtonListener());
callScreen.setSpeakerButtonListener(new SpeakerButtonListener());
callScreen.setBluetoothButtonListener(new BluetoothButtonListener());
networkAccess = new SignalServiceNetworkAccess(this);
}
private void handleSetMuteAudio(boolean enabled) {
Intent intent = new Intent(this, WebRtcCallService.class);
intent.setAction(WebRtcCallService.ACTION_SET_MUTE_AUDIO);
intent.putExtra(WebRtcCallService.EXTRA_MUTE, enabled);
startService(intent);
}
private void handleSetMuteVideo(boolean muted) {
Intent intent = new Intent(this, WebRtcCallService.class);
intent.setAction(WebRtcCallService.ACTION_SET_MUTE_VIDEO);
intent.putExtra(WebRtcCallService.EXTRA_MUTE, muted);
startService(intent);
}
private void handleFlipCamera() {
Intent intent = new Intent(this, WebRtcCallService.class);
intent.setAction(WebRtcCallService.ACTION_FLIP_CAMERA);
startService(intent);
}
private void handleAnswerCall() {
WebRtcViewModel event = EventBus.getDefault().getStickyEvent(WebRtcViewModel.class);
if (event != null) {
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Permissions.with(this)
.request(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA)
.ifNecessary()
.withRationaleDialog(getString(R.string.WebRtcCallActivity_to_answer_the_call_from_s_give_signal_access_to_your_microphone, event.getRecipient().toShortString()),
R.drawable.ic_mic_white_48dp, R.drawable.ic_videocam_white_48dp)
.withPermanentDenialDialog(getString(R.string.WebRtcCallActivity_signal_requires_microphone_and_camera_permissions_in_order_to_make_or_receive_calls))
.onAllGranted(() -> {
callScreen.setActiveCall(event.getRecipient(), getString(R.string.RedPhone_answering));
Intent intent = new Intent(this, WebRtcCallService.class);
intent.setAction(WebRtcCallService.ACTION_ANSWER_CALL);
startService(intent);
})
.onAnyDenied(this::handleDenyCall)
.execute();
}
}
private void handleDenyCall() {
WebRtcViewModel event = EventBus.getDefault().getStickyEvent(WebRtcViewModel.class);
if (event != null) {
Intent intent = new Intent(this, WebRtcCallService.class);
intent.setAction(WebRtcCallService.ACTION_DENY_CALL);
startService(intent);
callScreen.setActiveCall(event.getRecipient(), getString(R.string.RedPhone_ending_call));
delayedFinish();
}
}
private void handleEndCall() {
Log.w(TAG, "Hangup pressed, handling termination now...");
Intent intent = new Intent(WebRtcCallActivity.this, WebRtcCallService.class);
intent.setAction(WebRtcCallService.ACTION_LOCAL_HANGUP);
startService(intent);
}
private void handleIncomingCall(@NonNull WebRtcViewModel event) {
callScreen.setIncomingCall(event.getRecipient());
}
private void handleOutgoingCall(@NonNull WebRtcViewModel event) {
callScreen.setActiveCall(event.getRecipient(), getString(R.string.RedPhone_dialing));
}
private void handleTerminate(@NonNull Recipient recipient /*, int terminationType */) {
Log.w(TAG, "handleTerminate called");
callScreen.setActiveCall(recipient, getString(R.string.RedPhone_ending_call));
EventBus.getDefault().removeStickyEvent(WebRtcViewModel.class);
delayedFinish();
}
private void handleCallRinging(@NonNull WebRtcViewModel event) {
callScreen.setActiveCall(event.getRecipient(), getString(R.string.RedPhone_ringing));
}
private void handleCallBusy(@NonNull WebRtcViewModel event) {
callScreen.setActiveCall(event.getRecipient(), getString(R.string.RedPhone_busy));
delayedFinish(BUSY_SIGNAL_DELAY_FINISH);
}
private void handleCallConnected(@NonNull WebRtcViewModel event) {
getWindow().addFlags(WindowManager.LayoutParams.FLAG_IGNORE_CHEEK_PRESSES);
callScreen.setActiveCall(event.getRecipient(), getString(R.string.RedPhone_connected), "");
}
private void handleRecipientUnavailable(@NonNull WebRtcViewModel event) {
callScreen.setActiveCall(event.getRecipient(), getString(R.string.RedPhone_recipient_unavailable));
delayedFinish();
}
private void handleServerFailure(@NonNull WebRtcViewModel event) {
callScreen.setActiveCall(event.getRecipient(), getString(R.string.RedPhone_network_failed));
delayedFinish();
}
private void handleNoSuchUser(final @NonNull WebRtcViewModel event) {
if (isFinishing()) return; // XXX Stuart added this check above, not sure why, so I'm repeating in ignorance. - moxie
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setTitle(R.string.RedPhone_number_not_registered);
dialog.setIconAttribute(R.attr.dialog_alert_icon);
dialog.setMessage(R.string.RedPhone_the_number_you_dialed_does_not_support_secure_voice);
dialog.setCancelable(true);
dialog.setPositiveButton(R.string.RedPhone_got_it, new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
WebRtcCallActivity.this.handleTerminate(event.getRecipient());
}
});
dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
WebRtcCallActivity.this.handleTerminate(event.getRecipient());
}
});
dialog.show();
}
private void handleUntrustedIdentity(@NonNull WebRtcViewModel event) {
final IdentityKey theirIdentity = event.getIdentityKey();
final Recipient recipient = event.getRecipient();
callScreen.setUntrustedIdentity(recipient, theirIdentity);
callScreen.setAcceptIdentityListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
synchronized (SESSION_LOCK) {
TextSecureIdentityKeyStore identityKeyStore = new TextSecureIdentityKeyStore(WebRtcCallActivity.this);
identityKeyStore.saveIdentity(new SignalProtocolAddress(recipient.getAddress().serialize(), 1), theirIdentity, true);
}
Intent intent = new Intent(WebRtcCallActivity.this, WebRtcCallService.class);
intent.putExtra(WebRtcCallService.EXTRA_REMOTE_ADDRESS, recipient.getAddress());
intent.setAction(WebRtcCallService.ACTION_OUTGOING_CALL);
startService(intent);
}
});
callScreen.setCancelIdentityButton(new View.OnClickListener() {
@Override
public void onClick(View v) {
handleTerminate(recipient);
}
});
}
private void delayedFinish() {
delayedFinish(STANDARD_DELAY_FINISH);
}
private void delayedFinish(int delayMillis) {
callScreen.postDelayed(new Runnable() {
public void run() {
WebRtcCallActivity.this.finish();
}
}, delayMillis);
}
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@Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
public void onEventMainThread(final WebRtcViewModel event) {
Log.w(TAG, "Got message from service: " + event);
switch (event.getState()) {
case CALL_CONNECTED: handleCallConnected(event); break;
case NETWORK_FAILURE: handleServerFailure(event); break;
case CALL_RINGING: handleCallRinging(event); break;
case CALL_DISCONNECTED: handleTerminate(event.getRecipient()); break;
case NO_SUCH_USER: handleNoSuchUser(event); break;
case RECIPIENT_UNAVAILABLE: handleRecipientUnavailable(event); break;
case CALL_INCOMING: handleIncomingCall(event); break;
case CALL_OUTGOING: handleOutgoingCall(event); break;
case CALL_BUSY: handleCallBusy(event); break;
case UNTRUSTED_IDENTITY: handleUntrustedIdentity(event); break;
}
callScreen.setRemoteVideoEnabled(event.isRemoteVideoEnabled());
callScreen.updateAudioState(event.isBluetoothAvailable(), event.isMicrophoneEnabled());
callScreen.setControlsEnabled(event.getState() != WebRtcViewModel.State.CALL_INCOMING);
callScreen.setLocalVideoState(event.getLocalCameraState());
}
private class HangupButtonListener implements WebRtcCallScreen.HangupButtonListener {
public void onClick() {
handleEndCall();
}
}
private class AudioMuteButtonListener implements WebRtcCallControls.MuteButtonListener {
@Override
public void onToggle(boolean isMuted) {
WebRtcCallActivity.this.handleSetMuteAudio(isMuted);
}
}
private class VideoMuteButtonListener implements WebRtcCallControls.MuteButtonListener {
@Override
public void onToggle(boolean isMuted) {
WebRtcCallActivity.this.handleSetMuteVideo(isMuted);
}
}
private class CameraFlipButtonListener implements WebRtcCallControls.CameraFlipButtonListener {
@Override
public void onToggle() {
WebRtcCallActivity.this.handleFlipCamera();
}
}
private class SpeakerButtonListener implements WebRtcCallControls.SpeakerButtonListener {
@Override
public void onSpeakerChange(boolean isSpeaker) {
AudioManager audioManager = ServiceUtil.getAudioManager(WebRtcCallActivity.this);
audioManager.setSpeakerphoneOn(isSpeaker);
if (isSpeaker && audioManager.isBluetoothScoOn()) {
audioManager.stopBluetoothSco();
audioManager.setBluetoothScoOn(false);
}
}
}
private class BluetoothButtonListener implements WebRtcCallControls.BluetoothButtonListener {
@Override
public void onBluetoothChange(boolean isBluetooth) {
AudioManager audioManager = ServiceUtil.getAudioManager(WebRtcCallActivity.this);
if (isBluetooth) {
audioManager.startBluetoothSco();
audioManager.setBluetoothScoOn(true);
} else {
audioManager.stopBluetoothSco();
audioManager.setBluetoothScoOn(false);
}
}
}
private class IncomingCallActionListener implements WebRtcAnswerDeclineButton.AnswerDeclineListener {
@Override
public void onAnswered() {
WebRtcCallActivity.this.handleAnswerCall();
}
@Override
public void onDeclined() {
WebRtcCallActivity.this.handleDenyCall();
}
}
}