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Use authData UUID when sending playerlist packets to the client (#654)

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Bedrock knows its own UUID and when it receives the Java uuid it will either crash (MCEE) or add a ghost player onto the playerlist (Bedrock).
This change will check if an entity is the client and if so replace the entities UUID with the AuthData UUID.

A refactor of JavaPlayerListEntryTranslator was also done as I got confused each time what it was doing so it is now hopefully a bit clearer and also fixes the case where an entity is removed but still exists on the server (Vanished).
This commit is contained in:
bundabrg 2020-05-26 11:39:57 +08:00 committed by GitHub
parent cc6c7fe78d
commit a929c411d2
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 75 additions and 32 deletions
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46
connector/src/main/java/org/geysermc/connector/network/translators/java/entity/player/JavaPlayerListEntryTranslator.java
View file

@ -42,22 +42,30 @@ import com.nukkitx.protocol.bedrock.packet.PlayerListPacket;
public class JavaPlayerListEntryTranslator extends PacketTranslator<ServerPlayerListEntryPacket> {
@Override
public void translate(ServerPlayerListEntryPacket packet, GeyserSession session) {
if (packet.getAction() != PlayerListEntryAction.ADD_PLAYER && packet.getAction() != PlayerListEntryAction.REMOVE_PLAYER) return;
if (packet.getAction() != PlayerListEntryAction.ADD_PLAYER && packet.getAction() != PlayerListEntryAction.REMOVE_PLAYER)
return;
PlayerListPacket translate = new PlayerListPacket();
translate.setAction(packet.getAction() == PlayerListEntryAction.ADD_PLAYER ? PlayerListPacket.Action.ADD : PlayerListPacket.Action.REMOVE);
for (PlayerListEntry entry : packet.getEntries()) {
if (packet.getAction() == PlayerListEntryAction.ADD_PLAYER) {
switch (packet.getAction()) {
case ADD_PLAYER:
PlayerEntity playerEntity;
boolean self = entry.getProfile().getId().equals(session.getPlayerEntity().getUuid());
PlayerEntity playerEntity = session.getPlayerEntity();
if (self) {
playerEntity.setProfile(entry.getProfile());
// Entity is ourself
playerEntity = session.getPlayerEntity();
SkinUtils.requestAndHandleSkinAndCape(playerEntity, session, skinAndCape -> {
GeyserConnector.getInstance().getLogger().debug("Loading Local Bedrock Java Skin Data");
});
} else {
playerEntity = session.getEntityCache().getPlayerEntity(entry.getProfile().getId());
}
if (playerEntity == null) {
// It's a new player
playerEntity = new PlayerEntity(
entry.getProfile(),
-1,
@ -68,21 +76,43 @@ public class JavaPlayerListEntryTranslator extends PacketTranslator<ServerPlayer
);
}
playerEntity.setPlayerList(true);
playerEntity.setValid(true);
session.getEntityCache().addPlayerEntity(playerEntity);
translate.getEntries().add(SkinUtils.buildCachedEntry(entry.getProfile(), playerEntity.getGeyserId()));
} else {
playerEntity.setProfile(entry.getProfile());
playerEntity.setPlayerList(true);
playerEntity.setValid(true);
PlayerListPacket.Entry playerListEntry = SkinUtils.buildCachedEntry(entry.getProfile(), playerEntity.getGeyserId());
if (self) {
// Copy the entry with our identity instead.
PlayerListPacket.Entry copy = new PlayerListPacket.Entry(session.getAuthData().getUUID());
copy.setName(playerListEntry.getName());
copy.setEntityId(playerListEntry.getEntityId());
copy.setSkin(playerListEntry.getSkin());
copy.setXuid(playerListEntry.getXuid());
copy.setPlatformChatId(playerListEntry.getPlatformChatId());
copy.setTeacher(playerListEntry.isTeacher());
playerListEntry = copy;
}
translate.getEntries().add(playerListEntry);
break;
case REMOVE_PLAYER:
PlayerEntity entity = session.getEntityCache().getPlayerEntity(entry.getProfile().getId());
if (entity != null && entity.isValid()) {
// remove from tablist but player entity is still there
entity.setPlayerList(false);
} else {
// just remove it from caching
if (entity == null) {
session.getEntityCache().removePlayerEntity(entry.getProfile().getId());
} else {
entity.setPlayerList(false);
session.getEntityCache().removeEntity(entity, false);
}
}
translate.getEntries().add(new PlayerListPacket.Entry(entry.getProfile().getId()));
break;
}
}

13
connector/src/main/java/org/geysermc/connector/utils/SkinUtils.java
View file

@ -218,6 +218,19 @@ public class SkinUtils {
geometry.getGeometryData()
);
// If it is our skin we replace the UUID with the authdata UUID
if (session.getPlayerEntity() == entity) {
// Copy the entry with our identity instead.
PlayerListPacket.Entry copy = new PlayerListPacket.Entry(session.getAuthData().getUUID());
copy.setName(updatedEntry.getName());
copy.setEntityId(updatedEntry.getEntityId());
copy.setSkin(updatedEntry.getSkin());
copy.setXuid(updatedEntry.getXuid());
copy.setPlatformChatId(updatedEntry.getPlatformChatId());
copy.setTeacher(updatedEntry.isTeacher());
updatedEntry = copy;
}
PlayerListPacket playerRemovePacket = new PlayerListPacket();
playerRemovePacket.setAction(PlayerListPacket.Action.REMOVE);
playerRemovePacket.getEntries().add(updatedEntry);