From c1c4f93d153d0a7aa37b28b7d937bae85bd19bdd Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 17 Jun 2017 17:00:32 -0400
Subject: [PATCH] Profile Lookup Events

Adds a Pre Lookup Event and a Post Lookup Event so that plugins may prefill in profile data, and cache the responses from
profiles that had to be looked up.

diff --git a/src/main/java/com/destroystokyo/paper/profile/WrappedGameProfileRepository.java b/src/main/java/com/destroystokyo/paper/profile/WrappedGameProfileRepository.java
new file mode 100644
index 000000000..bffba6a65
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/profile/WrappedGameProfileRepository.java
@@ -0,0 +1,70 @@
+package com.destroystokyo.paper.profile;
+
+import com.destroystokyo.paper.event.profile.LookupProfileEvent;
+import com.destroystokyo.paper.event.profile.PreLookupProfileEvent;
+import com.google.common.collect.Sets;
+import com.mojang.authlib.Agent;
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.GameProfileRepository;
+import com.mojang.authlib.ProfileLookupCallback;
+import com.mojang.authlib.properties.Property;
+
+import javax.annotation.Nonnull;
+import java.util.Set;
+
+public class WrappedGameProfileRepository implements GameProfileRepository {
+
+    private final GameProfileRepository orig;
+    public WrappedGameProfileRepository(@Nonnull GameProfileRepository orig) {
+        this.orig = orig;
+    }
+
+    @Override
+    public void findProfilesByNames(String[] names, Agent agent, ProfileLookupCallback callback) {
+        Set<String> unfoundNames = Sets.newHashSet();
+        for (String name : names) {
+            PreLookupProfileEvent event = new PreLookupProfileEvent(name);
+            event.callEvent();
+            if (event.getUUID() != null) {
+                // Plugin provided UUI, we can skip network call.
+                GameProfile gameprofile = new GameProfile(event.getUUID(), name);
+                // We might even have properties!
+                Set<ProfileProperty> profileProperties = event.getProfileProperties();
+                if (!profileProperties.isEmpty()) {
+                    for (ProfileProperty property : profileProperties) {
+                        gameprofile.getProperties().put(property.getName(), CraftPlayerProfile.asAuthlib(property));
+                    }
+                }
+                callback.onProfileLookupSucceeded(gameprofile);
+            } else {
+                unfoundNames.add(name);
+            }
+        }
+
+        // Some things were not found.... Proceed to look up.
+        if (!unfoundNames.isEmpty()) {
+            String[] namesArr = unfoundNames.toArray(new String[unfoundNames.size()]);
+            orig.findProfilesByNames(namesArr, agent, new PreProfileLookupCallback(callback));
+        }
+    }
+
+    private static class PreProfileLookupCallback implements ProfileLookupCallback {
+        private final ProfileLookupCallback callback;
+
+        PreProfileLookupCallback(ProfileLookupCallback callback) {
+            this.callback = callback;
+        }
+
+        @Override
+        public void onProfileLookupSucceeded(GameProfile gameProfile) {
+            PlayerProfile from = CraftPlayerProfile.asBukkitMirror(gameProfile);
+            new LookupProfileEvent(from).callEvent();
+            callback.onProfileLookupSucceeded(gameProfile);
+        }
+
+        @Override
+        public void onProfileLookupFailed(GameProfile gameProfile, Exception e) {
+            callback.onProfileLookupFailed(gameProfile, e);
+        }
+    }
+}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index e8bddc171..6159cf4c0 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1021,6 +1021,7 @@ public abstract class MinecraftServer implements ICommandListener, Runnable, IAs
             YggdrasilAuthenticationService yggdrasilauthenticationservice = new YggdrasilAuthenticationService(Proxy.NO_PROXY, UUID.randomUUID().toString());
             MinecraftSessionService minecraftsessionservice = yggdrasilauthenticationservice.createMinecraftSessionService();
             GameProfileRepository gameprofilerepository = yggdrasilauthenticationservice.createProfileRepository();
+            gameprofilerepository = new com.destroystokyo.paper.profile.WrappedGameProfileRepository(gameprofilerepository); // Paper
             UserCache usercache = new UserCache(gameprofilerepository, new File(s1, MinecraftServer.a.getName()));
             final DedicatedServer dedicatedserver = new DedicatedServer(options, DataConverterRegistry.a(), yggdrasilauthenticationservice, minecraftsessionservice, gameprofilerepository, usercache);
 
-- 
2.16.1