Add kotlin/proto level message processing.

libsignal/service/src/main/java/org/whispersystems/signalservice/api/account/AccountAttributes.kt

@@ -24,7 +24,7 @@ class AccountAttributes @JsonCreator constructor(
   @JsonProperty val capabilities: Capabilities?,
   @JsonProperty val name: String?,
   @JsonProperty val pniRegistrationId: Int,
-  @JsonProperty val recoveryPassword: String?,
+  @JsonProperty val recoveryPassword: String?
 ) {
   constructor(
     signalingKey: String?,

libsignal/service/src/main/java/org/whispersystems/signalservice/api/messages/SignalServiceContent.java

@@ -1339,7 +1339,7 @@ import javax.annotation.Nullable;
     return new SignalServiceDataMessage.PaymentActivation(payment.getType());
   }
 
-  private static @Nullable List<SharedContact> createSharedContacts(SignalServiceProtos.DataMessage content) throws InvalidMessageStructureException {
+  public static @Nullable List<SharedContact> createSharedContacts(SignalServiceProtos.DataMessage content) throws InvalidMessageStructureException {
     if (content.getContactCount() <= 0) return null;
 
     List<SharedContact> results = new LinkedList<>();

libsignal/service/src/main/java/org/whispersystems/signalservice/api/push/ServiceId.java

@@ -11,6 +11,8 @@ import java.util.Objects;
 import java.util.UUID;
 import java.util.stream.Collectors;
 
+import javax.annotation.Nullable;
+
 /**
  * A wrapper around a UUID that represents an identifier for an account. Today, that is either an {@link ACI} or a {@link PNI}.
  * However, that doesn't mean every {@link ServiceId} is an <em>instance</em> of one of those classes. In reality, we often
@@ -41,7 +43,7 @@ public class ServiceId {
     return from(UuidUtil.parseOrThrow(raw));
   }
 
-  public static ServiceId parseOrNull(String raw) {
+  public static @Nullable ServiceId parseOrNull(String raw) {
     UUID uuid = UuidUtil.parseOrNull(raw);
     return uuid != null ? from(uuid) : null;
   }

libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/NowhereBufferedSink.java

@@ -5,6 +5,8 @@ import java.io.OutputStream;
 import java.nio.ByteBuffer;
 import java.nio.charset.Charset;
 
+import javax.annotation.Nonnull;
+
 import okio.Buffer;
 import okio.BufferedSink;
 import okio.ByteString;
@@ -117,6 +119,11 @@ public class NowhereBufferedSink implements BufferedSink {
     return this;
   }
 
+  @Override
+  public BufferedSink write(@Nonnull ByteString byteString, int i, int i1) throws IOException {
+    return this;
+  }
+
   @Override
   public void write(Buffer source, long byteCount) throws IOException {
 

libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/RegistrationSessionMetadataResponse.kt

@@ -9,7 +9,7 @@ import com.fasterxml.jackson.annotation.JsonProperty
 data class RegistrationSessionMetadataResponse(
   val headers: RegistrationSessionMetadataHeaders,
   val body: RegistrationSessionMetadataJson,
-  val state: RegistrationSessionState?,
+  val state: RegistrationSessionState?
 )
 
 data class RegistrationSessionMetadataHeaders(
@@ -23,7 +23,7 @@ data class RegistrationSessionMetadataJson(
   @JsonProperty("nextVerificationAttempt") val nextVerificationAttempt: Int?,
   @JsonProperty("allowedToRequestCode") val allowedToRequestCode: Boolean,
   @JsonProperty("requestedInformation") val requestedInformation: List<String>,
-  @JsonProperty("verified") val verified: Boolean,
+  @JsonProperty("verified") val verified: Boolean
 ) {
   fun pushChallengedRequired(): Boolean {
     return requestedInformation.contains("pushChallenge")
@@ -35,5 +35,5 @@ data class RegistrationSessionMetadataJson(
 }
 
 data class RegistrationSessionState(
-  var pushChallengeTimedOut: Boolean,
+  var pushChallengeTimedOut: Boolean
 )

libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/UpdateVerificationSessionRequestBody.kt

@@ -9,7 +9,7 @@ data class UpdateVerificationSessionRequestBody(
   @JsonProperty val pushToken: String?,
   @JsonProperty val pushChallenge: String?,
   @JsonProperty val mcc: String?,
-  @JsonProperty val mnc: String?,
+  @JsonProperty val mnc: String?
 ) {
   @JsonProperty
   val pushTokenType: String? = if (pushToken != null) "fcm" else null

libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/VerificationSessionMetadataRequestBody.kt

@@ -8,7 +8,7 @@ data class VerificationSessionMetadataRequestBody(
   @JsonProperty val number: String,
   @JsonProperty val pushToken: String?,
   @JsonProperty val mcc: String?,
-  @JsonProperty val mnc: String?,
+  @JsonProperty val mnc: String?
 ) {
   @JsonProperty
   val pushTokenType: String? = if (pushToken != null) "fcm" else null

libsignal/service/src/main/protowire/MessageProcessing.proto

@@ -0,0 +1,27 @@
+/**
+ * Copyright (C) 2014-2016 Open Whisper Systems
+ *
+ * Licensed according to the LICENSE file in this repository.
+ */
+
+syntax = "proto2";
+
+package signalservice;
+
+option java_package = "org.whispersystems.signalservice.api.crypto.protos";
+
+message EnvelopeMetadata {
+  required bytes  sourceServiceId      = 1;
+  optional string sourceE164           = 2;
+  required int32  sourceDeviceId       = 3;
+  required bool   sealedSender         = 4;
+  optional bytes  groupId              = 5;
+  required bytes  destinationServiceId = 6;
+}
+
+message CompleteMessage {
+  required bytes            envelope                 = 1;
+  required bytes            content                  = 2;
+  required EnvelopeMetadata metadata                 = 3;
+  required int64            serverDeliveredTimestamp = 4;
+}