Paper/Spigot-API-Patches/0059-Profile-Lookup-Events.patch

From 6621b1acfb0898fa33bd6d3461ebff382a569465 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 17 Jun 2017 16:30:44 -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/pom.xml b/pom.xml
index 862910e0..c2922a7b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -60,6 +60,13 @@
             <!-- Trove Provided by CraftBukkit -->
             <scope>provided</scope>
         </dependency>
+        <!-- Paper - Add Authlib for Profile API -->
+        <dependency>
+            <groupId>com.mojang</groupId>
+            <artifactId>authlib</artifactId>
+            <version>1.5.25</version> <!-- keep in sync with major MC versions -->
+            <scope>compile</scope> <!-- expose to Plugins -->
+        </dependency>
         <dependency>
             <groupId>co.aikar</groupId>
             <artifactId>fastutil-lite</artifactId>
diff --git a/src/main/java/com/destroystokyo/paper/event/profile/LookupProfileEvent.java b/src/main/java/com/destroystokyo/paper/event/profile/LookupProfileEvent.java
new file mode 100644
index 00000000..6074ecde
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/profile/LookupProfileEvent.java
@@ -0,0 +1,43 @@
+package com.destroystokyo.paper.event.profile;
+
+import com.mojang.authlib.GameProfile;
+import org.bukkit.Bukkit;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Allows a plugin to be notified anytime AFTER a Profile has been looked up from the Mojang API
+ * This is an opportunity to view the response and potentially cache things.
+ *
+ * No guarantees are made about thread execution context for this event. If you need to know, check
+ * event.isAsync()
+ */
+public class LookupProfileEvent extends Event {
+
+    private static final HandlerList handlers = new HandlerList();
+
+    private final GameProfile profile;
+
+    public LookupProfileEvent(@Nonnull GameProfile profile) {
+        super(!Bukkit.isPrimaryThread());
+        this.profile = profile;
+    }
+
+    /**
+     * @return The profile that was recently looked up. This profile can be mutated
+     */
+    @Nonnull
+    public GameProfile getProfile() {
+        return profile;
+    }
+
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}
diff --git a/src/main/java/com/destroystokyo/paper/event/profile/PreLookupProfileEvent.java b/src/main/java/com/destroystokyo/paper/event/profile/PreLookupProfileEvent.java
new file mode 100644
index 00000000..750b9334
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/profile/PreLookupProfileEvent.java
@@ -0,0 +1,155 @@
+package com.destroystokyo.paper.event.profile;
+
+import com.google.common.collect.Multimap;
+import com.google.common.collect.Sets;
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.GameProfileRepository;
+import com.mojang.authlib.ProfileLookupCallback;
+import com.mojang.authlib.properties.Property;
+import com.mojang.authlib.properties.PropertyMap;
+import org.bukkit.Bukkit;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ * Allows a plugin to intercept a Profile Lookup for a Profile by name
+ *
+ * At the point of event fire, the UUID and properties are unset.
+ *
+ * If a plugin sets the UUID, and optionally the properties, the API call to look up the profile may be skipped.
+ *
+ * No guarantees are made about thread execution context for this event. If you need to know, check
+ * event.isAsync()
+ */
+public class PreLookupProfileEvent extends Event {
+
+    private static final HandlerList handlers = new HandlerList();
+
+    private final String name;
+
+    private UUID uuid;
+    private PropertyMap properties = new PropertyMap();
+
+    public PreLookupProfileEvent(@Nonnull String name) {
+        super(!Bukkit.isPrimaryThread());
+        this.name = name;
+    }
+
+    /**
+     * @return Name of the profile
+     */
+    @Nonnull
+    public String getName() {
+        return name;
+    }
+
+    /**
+     *  @return The UUID of the profile if it has already been provided by a plugin
+     *
+     * If this value is left null by the completion of the event call, then the server will
+     * trigger a call to the Mojang API to look up the UUID (Network Request), and subsequently, fire a
+     * {@link LookupProfileEvent}
+     */
+    @Nullable
+    public UUID getUUID() {
+        return uuid;
+    }
+
+    /**
+     * Sets the UUID for this player name. This will skip the initial API call to find the players UUID.
+     *
+     * However, if Profile Properties are needed by the server, you must also set them or else an API call will still be made.
+     *
+     * @param uuid the UUID to set on the {@link GameProfile} or null to reset
+     */
+    public void setUUID(@Nullable UUID uuid) {
+        this.uuid = uuid;
+    }
+
+    /**
+     * Get the properties for this profile
+     *
+     * @return the property map to attach to the new {@link GameProfile}
+     */
+    @Nonnull
+    public Multimap<String, Property> getProperties() {
+        return properties;
+    }
+
+    /**
+     * Completely replaces all Properties with the new provided properties
+     * @param properties the properties to set on the new profile
+     */
+    public void setProperties(Multimap<String, Property> properties) {
+        this.properties = new PropertyMap();
+        this.properties.putAll(properties);
+    }
+
+    /**
+     * Adds additional properties, without removing the original properties
+     * @param properties the properties to add to the existing properties
+     */
+    public void addProperties(Multimap<String, Property> properties) {
+        this.properties.putAll(properties);
+    }
+
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+
+    /*
+     * Wraps the Profile Repository so we can intercept all lookups
+     */
+    public static GameProfileRepository wrapProfileRepository(final GameProfileRepository orig) {
+        return (names, agent, 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!
+                    gameprofile.getProperties().putAll(event.getProperties());
+                    callback.onProfileLookupSucceeded(gameprofile);
+                } else {
+                    unfoundNames.add(name);
+                }
+            }
+
+            // Some things were not found.... Proceed to look up.
+            if (!unfoundNames.isEmpty() && orig != null) {
+                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) {
+            new LookupProfileEvent(gameProfile).callEvent();
+            callback.onProfileLookupSucceeded(gameProfile);
+        }
+
+        @Override
+        public void onProfileLookupFailed(GameProfile gameProfile, Exception e) {
+            callback.onProfileLookupFailed(gameProfile, e);
+        }
+    }
+}
-- 
2.13.2