Add support for "registrationId" session enforcement.

src/main/java/org/whispersystems/textsecuregcm/entities/AccountAttributes.java

@@ -31,12 +31,16 @@ public class AccountAttributes {
   @JsonProperty
   private boolean fetchesMessages;
 
+  @JsonProperty
+  private int registrationId;
+
   public AccountAttributes() {}
 
-  public AccountAttributes(String signalingKey, boolean supportsSms, boolean fetchesMessages) {
-    this.signalingKey = signalingKey;
-    this.supportsSms  = supportsSms;
+  public AccountAttributes(String signalingKey, boolean supportsSms, boolean fetchesMessages, int registrationId) {
+    this.signalingKey    = signalingKey;
+    this.supportsSms     = supportsSms;
     this.fetchesMessages = fetchesMessages;
+    this.registrationId  = registrationId;
   }
 
   public String getSignalingKey() {
@@ -51,4 +55,7 @@ public class AccountAttributes {
     return fetchesMessages;
   }
 
+  public int getRegistrationId() {
+    return registrationId;
+  }
 }

src/main/java/org/whispersystems/textsecuregcm/entities/IncomingMessage.java

@@ -30,6 +30,9 @@ public class IncomingMessage {
   @JsonProperty
   private long   destinationDeviceId = 1;
 
+  @JsonProperty
+  private int destinationRegistrationId;
+
   @JsonProperty
   @NotEmpty
   private String body;
@@ -40,6 +43,7 @@ public class IncomingMessage {
   @JsonProperty
   private long   timestamp;
 
+
   public String getDestination() {
     return destination;
   }
@@ -59,4 +63,8 @@ public class IncomingMessage {
   public long getDestinationDeviceId() {
     return destinationDeviceId;
   }
+
+  public int getDestinationRegistrationId() {
+    return destinationRegistrationId;
+  }
 }

src/main/java/org/whispersystems/textsecuregcm/entities/PreKey.java

@@ -52,6 +52,9 @@ public class PreKey {
   @JsonProperty
   private boolean lastResort;
 
+  @JsonProperty
+  private int registrationId;
+
   public PreKey() {}
 
   public PreKey(long id, String number, long deviceId, long keyId,
@@ -125,4 +128,12 @@ public class PreKey {
   public long getDeviceId() {
     return deviceId;
   }
+
+  public int getRegistrationId() {
+    return registrationId;
+  }
+
+  public void setRegistrationId(int registrationId) {
+    this.registrationId = registrationId;
+  }
 }

src/main/java/org/whispersystems/textsecuregcm/entities/StaleDevices.java

@@ -0,0 +1,18 @@
+package org.whispersystems.textsecuregcm.entities;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.List;
+
+public class StaleDevices {
+
+  @JsonProperty
+  private List<Long> staleDevices;
+
+  public StaleDevices() {}
+
+  public StaleDevices(List<Long> staleDevices) {
+    this.staleDevices = staleDevices;
+  }
+
+}