From 78233bbeb219abe7f8f53bd8ea78abe704e6c5b4 Mon Sep 17 00:00:00 2001
From: Michael Kirk <michael@signal.org>
Date: Sun, 29 Sep 2019 13:03:09 -0700
Subject: [PATCH] set uuid capable

Also includes parsing capabilities from profile fetch, though the value isn't yet used
---
 .../src/Network/API/Requests/OWSRequestFactory.m      |  4 ++++
 .../src/Network/API/SignalServiceProfile.swift        | 11 +++++++++++
 SignalServiceKit/src/Util/FeatureFlags.swift          |  3 +++
 3 files changed, 18 insertions(+)

diff --git a/SignalServiceKit/src/Network/API/Requests/OWSRequestFactory.m b/SignalServiceKit/src/Network/API/Requests/OWSRequestFactory.m
index 5bcbe2e3d9..793ad0d684 100644
--- a/SignalServiceKit/src/Network/API/Requests/OWSRequestFactory.m
+++ b/SignalServiceKit/src/Network/API/Requests/OWSRequestFactory.m
@@ -397,6 +397,10 @@ NS_ASSUME_NONNULL_BEGIN
         accountAttributes[@"pin"] = pin;
     }
 
+    if (SSKFeatureFlags.uuidCapabilities) {
+        accountAttributes[@"capabilities"] = @{ @"uuid" : @(YES) };
+    }
+
     return [accountAttributes copy];
 }
 
diff --git a/SignalServiceKit/src/Network/API/SignalServiceProfile.swift b/SignalServiceKit/src/Network/API/SignalServiceProfile.swift
index 0fad7d2b48..98b0fbdab7 100644
--- a/SignalServiceKit/src/Network/API/SignalServiceProfile.swift
+++ b/SignalServiceKit/src/Network/API/SignalServiceProfile.swift
@@ -20,6 +20,7 @@ public class SignalServiceProfile: NSObject {
     public let avatarUrlPath: String?
     public let unidentifiedAccessVerifier: Data?
     public let hasUnrestrictedUnidentifiedAccess: Bool
+    public let supportsUUID: Bool
 
     public init(address: SignalServiceAddress?, responseObject: Any?) throws {
         guard let params = ParamParser(responseObject: responseObject) else {
@@ -59,5 +60,15 @@ public class SignalServiceProfile: NSObject {
         self.unidentifiedAccessVerifier = try params.optionalBase64EncodedData(key: "unidentifiedAccess")
 
         self.hasUnrestrictedUnidentifiedAccess = try params.optional(key: "unrestrictedUnidentifiedAccess") ?? false
+
+        if FeatureFlags.uuidCapabilities {
+            guard let capabilities = ParamParser(responseObject: try params.required(key: "capabilities")) else {
+                owsFailDebug("invalid capabilities")
+                throw ValidationError.invalid(description: "invalid capabilities: \(String(describing: params))")
+            }
+            self.supportsUUID = try capabilities.required(key: "uuid")
+        } else {
+            self.supportsUUID = false
+        }
     }
 }
diff --git a/SignalServiceKit/src/Util/FeatureFlags.swift b/SignalServiceKit/src/Util/FeatureFlags.swift
index c253575b82..233102b1f6 100644
--- a/SignalServiceKit/src/Util/FeatureFlags.swift
+++ b/SignalServiceKit/src/Util/FeatureFlags.swift
@@ -106,6 +106,9 @@ public class FeatureFlags: NSObject {
     @objc
     public static let preserveYdb = true
 
+    @objc
+    public static let uuidCapabilities = !IsUsingProductionService()
+
     @objc
     public static var audibleErrorLogging = build.includes(.internalPreview)