a/v calls: seperate out SECURITY error from APP_FAILURE

until now problems with verifying the call (omemo or DTLS missing) would
just be another app failure. This commit displays verifications problems as
their own thing.

src/main/java/eu/siacs/conversations/ui/RtpSessionActivity.java

@@ -81,6 +81,7 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
 
     private static final List<RtpEndUserState> END_CARD = Arrays.asList(
             RtpEndUserState.APPLICATION_ERROR,
+            RtpEndUserState.SECURITY_ERROR,
             RtpEndUserState.DECLINED_OR_BUSY,
             RtpEndUserState.CONNECTIVITY_ERROR,
             RtpEndUserState.CONNECTIVITY_LOST_ERROR,
@@ -88,7 +89,8 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
     );
     private static final List<RtpEndUserState> STATES_SHOWING_HELP_BUTTON = Arrays.asList(
             RtpEndUserState.APPLICATION_ERROR,
-            RtpEndUserState.CONNECTIVITY_ERROR
+            RtpEndUserState.CONNECTIVITY_ERROR,
+            RtpEndUserState.SECURITY_ERROR
     );
     private static final List<RtpEndUserState> STATES_SHOWING_SWITCH_TO_CHAT = Arrays.asList(
             RtpEndUserState.CONNECTING,
@@ -668,6 +670,9 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
             case APPLICATION_ERROR:
                 setTitle(R.string.rtp_state_application_failure);
                 break;
+            case SECURITY_ERROR:
+                setTitle(R.string.rtp_state_security_error);
+                break;
             case ENDED:
                 throw new IllegalStateException("Activity should have called finishAndReleaseWakeLock();");
             default:
@@ -743,7 +748,8 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
                 RtpEndUserState.CONNECTIVITY_ERROR,
                 RtpEndUserState.CONNECTIVITY_LOST_ERROR,
                 RtpEndUserState.APPLICATION_ERROR,
-                RtpEndUserState.RETRACTED
+                RtpEndUserState.RETRACTED,
+                RtpEndUserState.SECURITY_ERROR
         ).contains(state)) {
             this.binding.rejectCall.setContentDescription(getString(R.string.exit));
             this.binding.rejectCall.setOnClickListener(this::exit);
@@ -928,7 +934,11 @@ public class RtpSessionActivity extends XmppActivity implements XmppConnectionSe
             if (isPictureInPicture()) {
                 binding.appBarLayout.setVisibility(View.GONE);
                 binding.pipPlaceholder.setVisibility(View.VISIBLE);
-                if (state == RtpEndUserState.APPLICATION_ERROR || state == RtpEndUserState.CONNECTIVITY_ERROR) {
+                if (Arrays.asList(
+                        RtpEndUserState.APPLICATION_ERROR,
+                        RtpEndUserState.CONNECTIVITY_ERROR,
+                        RtpEndUserState.SECURITY_ERROR)
+                        .contains(state)) {
                     binding.pipWarning.setVisibility(View.VISIBLE);
                     binding.pipWaiting.setVisibility(View.GONE);
                 } else {

src/main/java/eu/siacs/conversations/xmpp/jingle/AbstractJingleConnection.java

@@ -136,6 +136,7 @@ public abstract class AbstractJingleConnection {
         TERMINATED_DECLINED_OR_BUSY, //equal to 'ENDED' (after other party declined the call)
         TERMINATED_CONNECTIVITY_ERROR, //equal to 'ENDED' (but after network failures; ui will display retry button)
         TERMINATED_CANCEL_OR_TIMEOUT, //more or less the same as retracted; caller pressed end call before session was accepted
-        TERMINATED_APPLICATION_FAILURE
+        TERMINATED_APPLICATION_FAILURE,
+        TERMINATED_SECURITY_ERROR
     }
 }

src/main/java/eu/siacs/conversations/xmpp/jingle/JingleRtpConnection.java

@@ -71,7 +71,8 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
             State.TERMINATED_DECLINED_OR_BUSY,
             State.TERMINATED_CONNECTIVITY_ERROR,
             State.TERMINATED_CANCEL_OR_TIMEOUT,
-            State.TERMINATED_APPLICATION_FAILURE
+            State.TERMINATED_APPLICATION_FAILURE,
+            State.TERMINATED_SECURITY_ERROR
     );
 
     private static final Map<State, Collection<State>> VALID_TRANSITIONS;
@@ -81,7 +82,8 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
         transitionBuilder.put(State.NULL, ImmutableList.of(
                 State.PROPOSED,
                 State.SESSION_INITIALIZED,
-                State.TERMINATED_APPLICATION_FAILURE
+                State.TERMINATED_APPLICATION_FAILURE,
+                State.TERMINATED_SECURITY_ERROR
         ));
         transitionBuilder.put(State.PROPOSED, ImmutableList.of(
                 State.ACCEPTED,
@@ -89,6 +91,7 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
                 State.REJECTED,
                 State.RETRACTED,
                 State.TERMINATED_APPLICATION_FAILURE,
+                State.TERMINATED_SECURITY_ERROR,
                 State.TERMINATED_CONNECTIVITY_ERROR //only used when the xmpp connection rebinds
         ));
         transitionBuilder.put(State.PROCEED, ImmutableList.of(
@@ -97,6 +100,7 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
                 State.SESSION_INITIALIZED_PRE_APPROVED,
                 State.TERMINATED_SUCCESS,
                 State.TERMINATED_APPLICATION_FAILURE,
+                State.TERMINATED_SECURITY_ERROR,
                 State.TERMINATED_CONNECTIVITY_ERROR //at this state used for error bounces of the proceed message
         ));
         transitionBuilder.put(State.SESSION_INITIALIZED, ImmutableList.of(
@@ -105,7 +109,8 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
                 State.TERMINATED_DECLINED_OR_BUSY,
                 State.TERMINATED_CONNECTIVITY_ERROR,  //at this state used for IQ errors and IQ timeouts
                 State.TERMINATED_CANCEL_OR_TIMEOUT,
-                State.TERMINATED_APPLICATION_FAILURE
+                State.TERMINATED_APPLICATION_FAILURE,
+                State.TERMINATED_SECURITY_ERROR
         ));
         transitionBuilder.put(State.SESSION_INITIALIZED_PRE_APPROVED, ImmutableList.of(
                 State.SESSION_ACCEPTED,
@@ -113,14 +118,16 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
                 State.TERMINATED_DECLINED_OR_BUSY,
                 State.TERMINATED_CONNECTIVITY_ERROR,  //at this state used for IQ errors and IQ timeouts
                 State.TERMINATED_CANCEL_OR_TIMEOUT,
-                State.TERMINATED_APPLICATION_FAILURE
+                State.TERMINATED_APPLICATION_FAILURE,
+                State.TERMINATED_SECURITY_ERROR
         ));
         transitionBuilder.put(State.SESSION_ACCEPTED, ImmutableList.of(
                 State.TERMINATED_SUCCESS,
                 State.TERMINATED_DECLINED_OR_BUSY,
                 State.TERMINATED_CONNECTIVITY_ERROR,
                 State.TERMINATED_CANCEL_OR_TIMEOUT,
-                State.TERMINATED_APPLICATION_FAILURE
+                State.TERMINATED_APPLICATION_FAILURE,
+                State.TERMINATED_SECURITY_ERROR
         ));
         VALID_TRANSITIONS = transitionBuilder.build();
     }
@@ -164,8 +171,9 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
             case CANCEL:
             case TIMEOUT:
                 return State.TERMINATED_CANCEL_OR_TIMEOUT;
-            case FAILED_APPLICATION:
             case SECURITY_ERROR:
+                return State.TERMINATED_SECURITY_ERROR;
+            case FAILED_APPLICATION:
             case UNSUPPORTED_TRANSPORTS:
             case UNSUPPORTED_APPLICATIONS:
                 return State.TERMINATED_APPLICATION_FAILURE;
@@ -959,6 +967,8 @@ public class JingleRtpConnection extends AbstractJingleConnection implements Web
                 return rtpConnectionStarted == 0 ? RtpEndUserState.CONNECTIVITY_ERROR : RtpEndUserState.CONNECTIVITY_LOST_ERROR;
             case TERMINATED_APPLICATION_FAILURE:
                 return RtpEndUserState.APPLICATION_ERROR;
+            case TERMINATED_SECURITY_ERROR:
+                return RtpEndUserState.SECURITY_ERROR;
         }
         throw new IllegalStateException(String.format("%s has no equivalent EndUserState", this.state));
     }

src/main/java/eu/siacs/conversations/xmpp/jingle/RtpEndUserState.java

@@ -13,5 +13,6 @@ public enum RtpEndUserState {
     CONNECTIVITY_ERROR, //network error; retry button
     CONNECTIVITY_LOST_ERROR, //network error but for call duration > 0
     RETRACTED, //user pressed home or power button during 'ringing' - shows retry button
-    APPLICATION_ERROR //something rather bad happened; libwebrtc failed or we got in IQ-error
+    APPLICATION_ERROR, //something rather bad happened; libwebrtc failed or we got in IQ-error
+    SECURITY_ERROR //problem with DTLS (missing) or verification
 }

src/main/res/values/strings.xml

@@ -912,6 +912,7 @@
     <string name="rtp_state_connectivity_lost_error">Connection lost</string>
     <string name="rtp_state_retracted">Retracted call</string>
     <string name="rtp_state_application_failure">App failure</string>
+    <string name="rtp_state_security_error">Verification problem</string>
     <string name="hang_up">Hang up</string>
     <string name="ongoing_call">Ongoing call</string>
     <string name="ongoing_video_call">Ongoing video call</string>