Basic PlayerProfile API

Establishes base extension of profile systems for future edits too

== AT ==
public org.bukkit.craftbukkit.profile.CraftProfileProperty
public org.bukkit.craftbukkit.profile.CraftPlayerTextures
public org.bukkit.craftbukkit.profile.CraftPlayerTextures copyFrom(Lorg/bukkit/profile/PlayerTextures;)V
public org.bukkit.craftbukkit.profile.CraftPlayerTextures rebuildPropertyIfDirty()V
public org.bukkit.craftbukkit.profile.CraftPlayerProfile toString(Lcom/mojang/authlib/properties/PropertyMap;)Ljava/lang/String;
public org.bukkit.craftbukkit.profile.CraftPlayerProfile getProperty(Ljava/lang/String;)Lcom/mojang/authlib/properties/Property;
public org.bukkit.craftbukkit.profile.CraftPlayerProfile setProperty(Ljava/lang/String;Lcom/mojang/authlib/properties/Property;)V

paper-server/patches/sources/net/minecraft/server/Main.java.patch

@@ -126,7 +126,7 @@
 -            Services services = Services.create(new YggdrasilAuthenticationService(Proxy.NO_PROXY), file);
 -            String s = (String) Optional.ofNullable((String) optionset.valueOf(optionspec10)).orElse(dedicatedserversettings.getProperties().levelName);
 +            File file = (File) optionset.valueOf("universe"); // CraftBukkit
-+            Services services = Services.create(new YggdrasilAuthenticationService(Proxy.NO_PROXY), file, optionset); // Paper - pass OptionSet to load paper config files
++            Services services = Services.create(new com.destroystokyo.paper.profile.PaperAuthenticationService(Proxy.NO_PROXY), file, optionset); // Paper - pass OptionSet to load paper config files; override authentication service
 +            // CraftBukkit start
 +            String s = (String) Optional.ofNullable((String) optionset.valueOf("world")).orElse(dedicatedserversettings.getProperties().levelName);
              LevelStorageSource convertable = LevelStorageSource.createDefault(file.toPath());

paper-server/patches/sources/net/minecraft/server/players/GameProfileCache.java.patch

@@ -23,7 +23,7 @@
      }
  
      public void add(GameProfile profile) {
-@@ -117,7 +119,7 @@
+@@ -117,13 +119,24 @@
          GameProfileCache.GameProfileInfo usercache_usercacheentry = new GameProfileCache.GameProfileInfo(profile, date);
  
          this.safeAdd(usercache_usercacheentry);
@@ -32,7 +32,24 @@
      }
  
      private long getNextOperation() {
-@@ -142,15 +144,15 @@
+         return this.operationCount.incrementAndGet();
+     }
+ 
++    // Paper start
++    public @Nullable GameProfile getProfileIfCached(String name) {
++        GameProfileCache.GameProfileInfo entry = this.profilesByName.get(name.toLowerCase(Locale.ROOT));
++        if (entry == null) {
++            return null;
++        }
++        entry.setLastAccess(this.getNextOperation());
++        return entry.getProfile();
++    }
++    // Paper end
++
+     public Optional<GameProfile> get(String name) {
+         String s1 = name.toLowerCase(Locale.ROOT);
+         GameProfileCache.GameProfileInfo usercache_usercacheentry = (GameProfileCache.GameProfileInfo) this.profilesByName.get(s1);
+@@ -142,15 +155,15 @@
              usercache_usercacheentry.setLastAccess(this.getNextOperation());
              optional = Optional.of(usercache_usercacheentry.getProfile());
          } else {
@@ -51,7 +68,7 @@
          }
  
          return optional;
-@@ -167,7 +169,7 @@
+@@ -167,7 +180,7 @@
              } else {
                  CompletableFuture<Optional<GameProfile>> completablefuture1 = CompletableFuture.supplyAsync(() -> {
                      return this.get(username);
@@ -60,7 +77,7 @@
                      this.requests.remove(username);
                  }, this.executor);
  
-@@ -208,7 +210,7 @@
+@@ -208,7 +221,7 @@
  
              label54:
              {
@@ -69,7 +86,7 @@
  
                  try {
                      JsonArray jsonarray = (JsonArray) this.gson.fromJson(bufferedreader, JsonArray.class);
-@@ -217,7 +219,7 @@
+@@ -217,7 +230,7 @@
                          DateFormat dateformat = GameProfileCache.createDateFormat();
  
                          jsonarray.forEach((jsonelement) -> {
@@ -78,7 +95,7 @@
  
                              Objects.requireNonNull(list);
                              optional.ifPresent(list::add);
-@@ -250,6 +252,11 @@
+@@ -250,6 +263,11 @@
              }
          } catch (FileNotFoundException filenotfoundexception) {
              ;
@@ -90,7 +107,7 @@
          } catch (JsonParseException | IOException ioexception) {
              GameProfileCache.LOGGER.warn("Failed to load profile cache {}", this.file, ioexception);
          }
-@@ -257,14 +264,15 @@
+@@ -257,14 +275,15 @@
          return list;
      }
  
@@ -108,7 +125,7 @@
  
          try {
              BufferedWriter bufferedwriter = Files.newWriter(this.file, StandardCharsets.UTF_8);
-@@ -289,6 +297,14 @@
+@@ -289,6 +308,14 @@
          } catch (IOException ioexception) {
              ;
          }

paper-server/src/main/java/com/destroystokyo/paper/profile/CraftPlayerProfile.java

@@ -0,0 +1,451 @@
+package com.destroystokyo.paper.profile;
+
+import com.google.common.base.Preconditions;
+import com.mojang.authlib.yggdrasil.ProfileResult;
+import io.papermc.paper.configuration.GlobalConfiguration;
+import com.google.common.base.Charsets;
+import com.google.common.collect.Iterables;
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.properties.Property;
+import com.mojang.authlib.properties.PropertyMap;
+import net.minecraft.Util;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.players.GameProfileCache;
+import net.minecraft.util.StringUtil;
+import net.minecraft.world.item.component.ResolvableProfile;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.Validate;
+import org.bukkit.configuration.serialization.SerializableAs;
+import org.bukkit.craftbukkit.configuration.ConfigSerializationUtil;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
+import org.bukkit.craftbukkit.profile.CraftPlayerTextures;
+import org.bukkit.craftbukkit.profile.CraftProfileProperty;
+import org.bukkit.profile.PlayerTextures;
+import org.jetbrains.annotations.NotNull;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import java.util.*;
+import java.util.concurrent.CompletableFuture;
+
+@SerializableAs("PlayerProfile")
+public class CraftPlayerProfile implements PlayerProfile, SharedPlayerProfile {
+
+    private boolean emptyName;
+    private boolean emptyUUID;
+    private GameProfile profile;
+    private final PropertySet properties = new PropertySet();
+
+    public CraftPlayerProfile(CraftPlayer player) {
+        this.profile = player.getHandle().getGameProfile();
+    }
+
+    public CraftPlayerProfile(UUID id, String name) {
+        this.profile = createAuthLibProfile(id, name);
+        this.emptyName = name == null;
+        this.emptyUUID = id == null;
+    }
+
+    public CraftPlayerProfile(GameProfile profile) {
+        Validate.notNull(profile, "GameProfile cannot be null!");
+        this.profile = profile;
+    }
+
+    public CraftPlayerProfile(ResolvableProfile resolvableProfile) {
+        this(resolvableProfile.id().orElse(null), resolvableProfile.name().orElse(null));
+        copyProfileProperties(resolvableProfile.gameProfile(), this.profile);
+    }
+
+    @Override
+    public boolean hasProperty(String property) {
+        return profile.getProperties().containsKey(property);
+    }
+
+    @Override
+    public void setProperty(ProfileProperty property) {
+        String name = property.getName();
+        PropertyMap properties = profile.getProperties();
+        properties.removeAll(name);
+
+        Preconditions.checkArgument(properties.size() < 16, "Cannot add more than 16 properties to a profile");
+        properties.put(name, new Property(name, property.getValue(), property.getSignature()));
+    }
+
+    @Override
+    public CraftPlayerTextures getTextures() {
+        return new CraftPlayerTextures(this);
+    }
+
+    @Override
+    public void setTextures(@Nullable PlayerTextures textures) {
+        if (textures == null) {
+            this.removeProperty("textures");
+        } else {
+            CraftPlayerTextures craftPlayerTextures = new CraftPlayerTextures(this);
+            craftPlayerTextures.copyFrom(textures);
+            craftPlayerTextures.rebuildPropertyIfDirty();
+        }
+    }
+
+    public GameProfile getGameProfile() {
+        return profile;
+    }
+
+    @Nullable
+    @Override
+    public UUID getId() {
+        return this.emptyUUID ? null : this.profile.getId();
+    }
+
+    @Override
+    @Deprecated(forRemoval = true)
+    public UUID setId(@Nullable UUID uuid) {
+        final GameProfile previousProfile = this.profile;
+        final UUID previousId = this.getId();
+        this.profile = createAuthLibProfile(uuid, previousProfile.getName());
+        copyProfileProperties(previousProfile, this.profile);
+        this.emptyUUID = uuid == null;
+        return previousId;
+    }
+
+    @Override
+    public UUID getUniqueId() {
+        return getId();
+    }
+
+    @Nullable
+    @Override
+    public String getName() {
+        return this.emptyName ? null : this.profile.getName();
+    }
+
+    @Override
+    @Deprecated(forRemoval = true)
+    public String setName(@Nullable String name) {
+        GameProfile prev = this.profile;
+        this.profile = createAuthLibProfile(prev.getId(), name);
+        copyProfileProperties(prev, this.profile);
+        this.emptyName = name == null;
+        return prev.getName();
+    }
+
+    @Nonnull
+    @Override
+    public Set<ProfileProperty> getProperties() {
+        return properties;
+    }
+
+    @Override
+    public void setProperties(Collection<ProfileProperty> properties) {
+        properties.forEach(this::setProperty);
+    }
+
+    @Override
+    public void clearProperties() {
+        profile.getProperties().clear();
+    }
+
+    @Override
+    public boolean removeProperty(String property) {
+        return !profile.getProperties().removeAll(property).isEmpty();
+    }
+
+    @Nullable
+    @Override
+    public Property getProperty(String property) {
+        return Iterables.getFirst(this.profile.getProperties().get(property), null);
+    }
+
+    @Nullable
+    @Override
+    public void setProperty(@NotNull String propertyName, @Nullable Property property) {
+        if (property != null) {
+            this.setProperty(new ProfileProperty(propertyName, property.value(), property.signature()));
+        } else {
+            profile.getProperties().removeAll(propertyName);
+        }
+    }
+
+    @Override
+    public @NotNull GameProfile buildGameProfile() {
+        GameProfile profile = new GameProfile(this.profile.getId(), this.profile.getName());
+        profile.getProperties().putAll(this.profile.getProperties());
+        return profile;
+    }
+
+    @Override
+    public @NotNull ResolvableProfile buildResolvableProfile() {
+        if (this.emptyName || this.emptyUUID) {
+            return new ResolvableProfile(this.emptyName ? Optional.empty() : Optional.of(this.profile.getName()), this.emptyUUID ? Optional.empty() : Optional.of(this.profile.getId()), this.profile.getProperties());
+        } else {
+            return new ResolvableProfile(this.buildGameProfile());
+        }
+    }
+
+    @Override
+    public CraftPlayerProfile clone() {
+        CraftPlayerProfile clone = new CraftPlayerProfile(this.getId(), this.getName());
+        clone.setProperties(getProperties());
+        return clone;
+    }
+
+    @Override
+    public boolean isComplete() {
+        return this.getId() != null && StringUtils.isNotBlank(this.getName());
+    }
+
+    @Override
+    public @NotNull CompletableFuture<PlayerProfile> update() {
+        return CompletableFuture.supplyAsync(() -> {
+            final CraftPlayerProfile clone = clone();
+            clone.complete(true);
+            return clone;
+        }, Util.PROFILE_EXECUTOR);
+    }
+
+    @Override
+    public boolean completeFromCache() {
+        return completeFromCache(false, GlobalConfiguration.get().proxies.isProxyOnlineMode());
+    }
+
+    public boolean completeFromCache(boolean onlineMode) {
+        return completeFromCache(false, onlineMode);
+    }
+
+    public boolean completeFromCache(boolean lookupUUID, boolean onlineMode) {
+        MinecraftServer server = MinecraftServer.getServer();
+        String name = profile.getName();
+        GameProfileCache userCache = server.getProfileCache();
+        if (this.getId() == null) {
+            final GameProfile profile;
+            if (onlineMode) {
+                profile = lookupUUID ? userCache.get(name).orElse(null) : userCache.getProfileIfCached(name);
+            } else {
+                // Make an OfflinePlayer using an offline mode UUID since the name has no profile
+                profile = new GameProfile(UUID.nameUUIDFromBytes(("OfflinePlayer:" + name).getBytes(Charsets.UTF_8)), name);
+            }
+            if (profile != null) {
+                // if old has it, assume its newer, so overwrite, else use cached if it was set and ours wasn't
+                copyProfileProperties(this.profile, profile);
+                this.profile = profile;
+                this.emptyUUID = false; // UUID was just retrieved from user cache and profile isn't null (so a completed profile was found)
+            }
+        }
+
+        if ((profile.getName().isEmpty() || !hasTextures()) && this.getId() != null) {
+            Optional<GameProfile> optProfile = userCache.get(this.profile.getId());
+            if (optProfile.isPresent()) {
+                GameProfile profile = optProfile.get();
+                if (this.profile.getName().isEmpty()) {
+                    // if old has it, assume its newer, so overwrite, else use cached if it was set and ours wasn't
+                    copyProfileProperties(this.profile, profile);
+                    this.profile = profile;
+                    this.emptyName = false; // Name was just retrieved via the userCache
+                } else if (profile != this.profile) {
+                    copyProfileProperties(profile, this.profile);
+                }
+            }
+        }
+        return this.isComplete();
+    }
+
+    public boolean complete(boolean textures) {
+        return complete(textures, GlobalConfiguration.get().proxies.isProxyOnlineMode());
+    }
+
+    public boolean complete(boolean textures, boolean onlineMode) {
+        if (this.isComplete() && (!textures || hasTextures())) { // Don't do lookup if we already have everything
+            return true;
+        }
+
+        MinecraftServer server = MinecraftServer.getServer();
+        boolean isCompleteFromCache = this.completeFromCache(true, onlineMode);
+        if (onlineMode && (!isCompleteFromCache || (textures && !hasTextures()))) {
+            ProfileResult result = server.getSessionService().fetchProfile(this.profile.getId(), true);
+            if (result != null && result.profile() != null) {
+                copyProfileProperties(result.profile(), this.profile, true);
+            }
+            if (this.isComplete()) {
+                server.getProfileCache().add(this.profile);
+            }
+        }
+        return this.isComplete() && (!onlineMode || !textures || hasTextures());
+    }
+
+    private static void copyProfileProperties(GameProfile source, GameProfile target) {
+        copyProfileProperties(source, target, false);
+    }
+
+    private static void copyProfileProperties(GameProfile source, GameProfile target, boolean clearTarget) {
+        if (source == target) {
+            throw new IllegalArgumentException("Source and target profiles are the same (" + source + ")");
+        }
+        PropertyMap sourceProperties = source.getProperties();
+        PropertyMap targetProperties = target.getProperties();
+        if (clearTarget) targetProperties.clear();
+        if (sourceProperties.isEmpty()) {
+            return;
+        }
+
+        for (Property property : sourceProperties.values()) {
+            targetProperties.removeAll(property.name());
+            targetProperties.put(property.name(), property);
+        }
+    }
+
+    private static GameProfile createAuthLibProfile(UUID uniqueId, String name) {
+        Preconditions.checkArgument(name == null || name.length() <= 16, "Name cannot be longer than 16 characters");
+        Preconditions.checkArgument(name == null || StringUtil.isValidPlayerName(name), "The name of the profile contains invalid characters: %s", name);
+        return new GameProfile(
+            uniqueId != null ? uniqueId : Util.NIL_UUID,
+            name != null ? name : ""
+        );
+    }
+
+    private static ProfileProperty toBukkit(Property property) {
+        return new ProfileProperty(property.name(), property.value(), property.signature());
+    }
+
+    public static PlayerProfile asBukkitCopy(GameProfile gameProfile) {
+        CraftPlayerProfile profile = new CraftPlayerProfile(gameProfile.getId(), gameProfile.getName());
+        copyProfileProperties(gameProfile, profile.profile);
+        return profile;
+    }
+
+    public static PlayerProfile asBukkitMirror(GameProfile profile) {
+        return new CraftPlayerProfile(profile);
+    }
+
+    public static Property asAuthlib(ProfileProperty property) {
+        return new Property(property.getName(), property.getValue(), property.getSignature());
+    }
+
+    public static GameProfile asAuthlibCopy(PlayerProfile profile) {
+        CraftPlayerProfile craft = ((CraftPlayerProfile) profile);
+        return asAuthlib(craft.clone());
+    }
+
+    public static GameProfile asAuthlib(PlayerProfile profile) {
+        CraftPlayerProfile craft = ((CraftPlayerProfile) profile);
+        return craft.getGameProfile();
+    }
+
+    public static ResolvableProfile asResolvableProfileCopy(PlayerProfile profile) {
+        return ((SharedPlayerProfile) profile).buildResolvableProfile();
+    }
+
+    @Override
+    public @NotNull Map<String, Object> serialize() {
+        Map<String, Object> map = new LinkedHashMap<>();
+        if (!this.emptyUUID) {
+            map.put("uniqueId", this.getId().toString());
+        }
+        if (!this.emptyName) {
+            map.put("name", getName());
+        }
+        if (!this.properties.isEmpty()) {
+            List<Object> propertiesData = new ArrayList<>();
+            for (ProfileProperty property : properties) {
+                propertiesData.add(CraftProfileProperty.serialize(new Property(property.getName(), property.getValue(), property.getSignature())));
+            }
+            map.put("properties", propertiesData);
+        }
+        return map;
+    }
+
+    public static CraftPlayerProfile deserialize(Map<String, Object> map) {
+        UUID uniqueId = ConfigSerializationUtil.getUuid(map, "uniqueId", true);
+        String name = ConfigSerializationUtil.getString(map, "name", true);
+
+        // This also validates the deserialized unique id and name (ensures that not both are null):
+        CraftPlayerProfile profile = new CraftPlayerProfile(uniqueId, name);
+
+        if (map.containsKey("properties")) {
+            for (Object propertyData : (List<?>) map.get("properties")) {
+                if (!(propertyData instanceof Map)) {
+                    throw new IllegalArgumentException("Property data (" + propertyData + ") is not a valid Map");
+                }
+                Property property = CraftProfileProperty.deserialize((Map<?, ?>) propertyData);
+                profile.profile.getProperties().put(property.name(), property);
+            }
+        }
+
+        return profile;
+    }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) return true;
+        if (o == null || this.getClass() != o.getClass()) return false;
+        final CraftPlayerProfile that = (CraftPlayerProfile) o;
+        return this.emptyName == that.emptyName && this.emptyUUID == that.emptyUUID && Objects.equals(this.profile, that.profile);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(this.emptyName, this.emptyUUID, this.profile);
+    }
+
+    @Override
+    public String toString() {
+        return "CraftPlayerProfile [uniqueId=" + getId() +
+            ", name=" + getName() +
+            ", properties=" + org.bukkit.craftbukkit.profile.CraftPlayerProfile.toString(this.profile.getProperties()) +
+            "]";
+    }
+
+    private class PropertySet extends AbstractSet<ProfileProperty> {
+
+        @Override
+        @Nonnull
+        public Iterator<ProfileProperty> iterator() {
+            return new ProfilePropertyIterator(profile.getProperties().values().iterator());
+        }
+
+        @Override
+        public int size() {
+            return profile.getProperties().size();
+        }
+
+        @Override
+        public boolean add(ProfileProperty property) {
+            setProperty(property);
+            return true;
+        }
+
+        @Override
+        public boolean addAll(Collection<? extends ProfileProperty> c) {
+            //noinspection unchecked
+            setProperties((Collection<ProfileProperty>) c);
+            return true;
+        }
+
+        @Override
+        public boolean contains(Object o) {
+            return o instanceof ProfileProperty && profile.getProperties().containsKey(((ProfileProperty) o).getName());
+        }
+
+        private class ProfilePropertyIterator implements Iterator<ProfileProperty> {
+            private final Iterator<Property> iterator;
+
+            ProfilePropertyIterator(Iterator<Property> iterator) {
+                this.iterator = iterator;
+            }
+
+            @Override
+            public boolean hasNext() {
+                return iterator.hasNext();
+            }
+
+            @Override
+            public ProfileProperty next() {
+                return toBukkit(iterator.next());
+            }
+
+            @Override
+            public void remove() {
+                iterator.remove();
+            }
+        }
+    }
+}

paper-server/src/main/java/com/destroystokyo/paper/profile/PaperAuthenticationService.java

@@ -0,0 +1,30 @@
+package com.destroystokyo.paper.profile;
+
+import com.mojang.authlib.Environment;
+import com.mojang.authlib.EnvironmentParser;
+import com.mojang.authlib.GameProfileRepository;
+import com.mojang.authlib.minecraft.MinecraftSessionService;
+import com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService;
+import com.mojang.authlib.yggdrasil.YggdrasilEnvironment;
+
+import java.net.Proxy;
+
+public class PaperAuthenticationService extends YggdrasilAuthenticationService {
+
+    private final Environment environment;
+
+    public PaperAuthenticationService(Proxy proxy) {
+        super(proxy);
+        this.environment = EnvironmentParser.getEnvironmentFromProperties().orElse(YggdrasilEnvironment.PROD.getEnvironment());
+    }
+
+    @Override
+    public MinecraftSessionService createMinecraftSessionService() {
+        return new PaperMinecraftSessionService(this.getServicesKeySet(),  this.getProxy(), this.environment);
+    }
+
+    @Override
+    public GameProfileRepository createProfileRepository() {
+        return new PaperGameProfileRepository(this.getProxy(), this.environment);
+    }
+}

paper-server/src/main/java/com/destroystokyo/paper/profile/PaperGameProfileRepository.java

@@ -0,0 +1,17 @@
+package com.destroystokyo.paper.profile;
+
+import com.mojang.authlib.Environment;
+import com.mojang.authlib.ProfileLookupCallback;
+import com.mojang.authlib.yggdrasil.YggdrasilGameProfileRepository;
+import java.net.Proxy;
+
+public class PaperGameProfileRepository extends YggdrasilGameProfileRepository {
+    public PaperGameProfileRepository(Proxy proxy, Environment environment) {
+        super(proxy, environment);
+    }
+
+    @Override
+    public void findProfilesByNames(String[] names, ProfileLookupCallback callback) {
+        super.findProfilesByNames(names, callback);
+    }
+}

paper-server/src/main/java/com/destroystokyo/paper/profile/PaperMinecraftSessionService.java

@@ -0,0 +1,22 @@
+package com.destroystokyo.paper.profile;
+
+import com.mojang.authlib.Environment;
+import com.mojang.authlib.yggdrasil.ProfileResult;
+import com.mojang.authlib.yggdrasil.ServicesKeySet;
+import com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService;
+
+import java.net.Proxy;
+import java.util.UUID;
+import org.jetbrains.annotations.Nullable;
+
+public class PaperMinecraftSessionService extends YggdrasilMinecraftSessionService {
+
+    protected PaperMinecraftSessionService(ServicesKeySet servicesKeySet, Proxy proxy, Environment environment) {
+        super(servicesKeySet, proxy, environment);
+    }
+
+    @Override
+    public @Nullable ProfileResult fetchProfile(final UUID profileId, final boolean requireSecure) {
+        return super.fetchProfile(profileId, requireSecure);
+    }
+}

paper-server/src/main/java/com/destroystokyo/paper/profile/SharedPlayerProfile.java

@@ -0,0 +1,26 @@
+package com.destroystokyo.paper.profile;
+
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.properties.Property;
+import net.minecraft.world.item.component.ResolvableProfile;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.UUID;
+
+public interface SharedPlayerProfile {
+
+    @Nullable UUID getUniqueId();
+
+    @Nullable String getName();
+
+    boolean removeProperty(@NotNull String property);
+
+    @Nullable Property getProperty(@NotNull String propertyName);
+
+    @Nullable void setProperty(@NotNull String propertyName, @Nullable Property property);
+
+    @NotNull GameProfile buildGameProfile();
+
+    @NotNull ResolvableProfile buildResolvableProfile();
+}

paper-server/src/main/java/org/bukkit/craftbukkit/CraftServer.java

@@ -265,6 +265,9 @@ import org.yaml.snakeyaml.error.MarkedYAMLException;
 
 import net.md_5.bungee.api.chat.BaseComponent; // Spigot
 
+import javax.annotation.Nullable; // Paper
+import javax.annotation.Nonnull; // Paper
+
 public final class CraftServer implements Server {
     private final String serverName = io.papermc.paper.ServerBuildInfo.buildInfo().brandName(); // Paper
     private final String serverVersion;
@@ -310,6 +313,7 @@ public final class CraftServer implements Server {
     static {
         ConfigurationSerialization.registerClass(CraftOfflinePlayer.class);
         ConfigurationSerialization.registerClass(CraftPlayerProfile.class);
+        ConfigurationSerialization.registerClass(com.destroystokyo.paper.profile.CraftPlayerProfile.class); // Paper
         CraftItemFactory.instance();
         CraftEntityFactory.instance();
     }
@@ -2868,5 +2872,39 @@ public final class CraftServer implements Server {
     public boolean suggestPlayerNamesWhenNullTabCompletions() {
         return io.papermc.paper.configuration.GlobalConfiguration.get().commands.suggestPlayerNamesWhenNullTabCompletions;
     }
+
+    @Override
+    public com.destroystokyo.paper.profile.PlayerProfile createProfile(@Nonnull UUID uuid) {
+        return createProfile(uuid, null);
+    }
+
+    @Override
+    public com.destroystokyo.paper.profile.PlayerProfile createProfile(@Nonnull String name) {
+        return createProfile(null, name);
+    }
+
+    @Override
+    public com.destroystokyo.paper.profile.PlayerProfile createProfile(@Nullable UUID uuid, @Nullable String name) {
+        Player player = uuid != null ? Bukkit.getPlayer(uuid) : (name != null ? Bukkit.getPlayerExact(name) : null);
+        if (player != null) return new com.destroystokyo.paper.profile.CraftPlayerProfile((CraftPlayer) player);
+
+        return new com.destroystokyo.paper.profile.CraftPlayerProfile(uuid, name);
+    }
+
+    @Override
+    public com.destroystokyo.paper.profile.PlayerProfile createProfileExact(@Nullable UUID uuid, @Nullable String name) {
+        Player player = uuid != null ? Bukkit.getPlayer(uuid) : (name != null ? Bukkit.getPlayerExact(name) : null);
+        if (player == null) {
+            return new com.destroystokyo.paper.profile.CraftPlayerProfile(uuid, name);
+        }
+
+        if (java.util.Objects.equals(uuid, player.getUniqueId()) && java.util.Objects.equals(name, player.getName())) {
+            return new com.destroystokyo.paper.profile.CraftPlayerProfile((CraftPlayer) player);
+        }
+
+        final com.destroystokyo.paper.profile.CraftPlayerProfile profile = new com.destroystokyo.paper.profile.CraftPlayerProfile(uuid, name);
+        profile.getGameProfile().getProperties().putAll(((CraftPlayer) player).getHandle().getGameProfile().getProperties());
+        return profile;
+    }
     // Paper end
 }

paper-server/src/main/java/org/bukkit/craftbukkit/profile/CraftPlayerProfile.java

@@ -31,7 +31,7 @@ import org.bukkit.profile.PlayerTextures;
 import org.jetbrains.annotations.ApiStatus;
 
 @SerializableAs("PlayerProfile")
-public final class CraftPlayerProfile implements PlayerProfile {
+public final class CraftPlayerProfile implements PlayerProfile, com.destroystokyo.paper.profile.SharedPlayerProfile { // Paper
 
     @Nonnull
     public static GameProfile validateSkullProfile(@Nonnull GameProfile gameProfile) {
@@ -132,8 +132,10 @@ public final class CraftPlayerProfile implements PlayerProfile {
         }
     }
 
-    void removeProperty(String propertyName) {
-        this.properties.removeAll(propertyName);
+    // Paper start - change return value for shared interface
+    public boolean removeProperty(String propertyName) {
+        return !this.properties.removeAll(propertyName).isEmpty();
+        // Paper end
     }
 
     void rebuildDirtyProperties() {
@@ -283,6 +285,7 @@ public final class CraftPlayerProfile implements PlayerProfile {
 
     @Override
     public Map<String, Object> serialize() {
+        // Paper - diff on change
         Map<String, Object> map = new LinkedHashMap<>();
         if (this.uniqueId != null) {
             map.put("uniqueId", this.uniqueId.toString());
@@ -296,10 +299,12 @@ public final class CraftPlayerProfile implements PlayerProfile {
             this.properties.forEach((propertyName, property) -> propertiesData.add(CraftProfileProperty.serialize(property)));
             map.put("properties", propertiesData);
         }
+        // Paper - diff on change
         return map;
     }
 
     public static CraftPlayerProfile deserialize(Map<String, Object> map) {
+        // Paper - diff on change
         UUID uniqueId = ConfigSerializationUtil.getUuid(map, "uniqueId", true);
         String name = ConfigSerializationUtil.getString(map, "name", true);
 
@@ -313,7 +318,7 @@ public final class CraftPlayerProfile implements PlayerProfile {
                 profile.properties.put(property.name(), property);
             }
         }
-
+        // Paper - diff on change
         return profile;
     }
 }

paper-server/src/main/java/org/bukkit/craftbukkit/profile/CraftPlayerTextures.java

@@ -48,7 +48,7 @@ public final class CraftPlayerTextures implements PlayerTextures {
         }
     }
 
-    private final CraftPlayerProfile profile;
+    private final com.destroystokyo.paper.profile.SharedPlayerProfile profile; // Paper
 
     // The textures data is loaded lazily:
     private boolean loaded = false;
@@ -67,7 +67,7 @@ public final class CraftPlayerTextures implements PlayerTextures {
     // GameProfiles (even if these modifications are later reverted).
     private boolean dirty = false;
 
-    CraftPlayerTextures(@Nonnull CraftPlayerProfile profile) {
+    public CraftPlayerTextures(@Nonnull com.destroystokyo.paper.profile.SharedPlayerProfile profile) { // Paper
         this.profile = profile;
     }