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https://github.com/PaperMC/Paper.git
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c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
61 lines
4.1 KiB
Diff
61 lines
4.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Mon, 3 Apr 2023 08:55:52 +0100
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Subject: [PATCH] Prevent causing expired keys from impacting new joins
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diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundPlayerInfoUpdatePacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundPlayerInfoUpdatePacket.java
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index 68c062cbaa030d62d97c9c003651f8fc17a00a6b..6247a21c9c391abf1f6db3482c659593e4f29355 100644
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--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundPlayerInfoUpdatePacket.java
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+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundPlayerInfoUpdatePacket.java
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@@ -113,7 +113,15 @@ public class ClientboundPlayerInfoUpdatePacket implements Packet<ClientGamePacke
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}),
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INITIALIZE_CHAT(
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(serialized, buf) -> serialized.chatSession = buf.readNullable(RemoteChatSession.Data::read),
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- (buf, entry) -> buf.writeNullable(entry.chatSession, RemoteChatSession.Data::write)
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+ // Paper start - Prevent causing expired keys from impacting new joins
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+ (buf, entry) -> {
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+ RemoteChatSession.Data chatSession = entry.chatSession;
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+ if (chatSession != null && chatSession.profilePublicKey().hasExpired()) {
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+ chatSession = null;
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+ }
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+ buf.writeNullable(chatSession, RemoteChatSession.Data::write);
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+ }
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+ // Paper end - Prevent causing expired keys from impacting new joins
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),
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UPDATE_GAME_MODE((serialized, buf) -> serialized.gameMode = GameType.byId(buf.readVarInt()), (buf, entry) -> buf.writeVarInt(entry.gameMode().getId())),
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UPDATE_LISTED((serialized, buf) -> serialized.listed = buf.readBoolean(), (buf, entry) -> buf.writeBoolean(entry.listed())),
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diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index 5a710de60a57c8af4eb083e17f03e801858dc2d9..db9c04d74475e00983cc9df74d615e4b68f83688 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -295,6 +295,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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private int knownMovePacketCount;
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@Nullable
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private RemoteChatSession chatSession;
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+ private boolean hasLoggedExpiry = false; // Paper - Prevent causing expired keys from impacting new joins
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private SignedMessageChain.Decoder signedMessageDecoder;
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private final LastSeenMessagesValidator lastSeenMessages = new LastSeenMessagesValidator(20);
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private final MessageSignatureCache messageSignatureCache = MessageSignatureCache.createDefault();
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@@ -402,6 +403,13 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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this.disconnect((Component) Component.translatable("multiplayer.disconnect.idling"), org.bukkit.event.player.PlayerKickEvent.Cause.IDLING); // Paper - kick event cause
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}
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+ // Paper start - Prevent causing expired keys from impacting new joins
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+ if (!hasLoggedExpiry && this.chatSession != null && this.chatSession.profilePublicKey().data().hasExpired()) {
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+ LOGGER.info("Player profile key for {} has expired!", this.player.getName().getString());
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+ hasLoggedExpiry = true;
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+ }
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+ // Paper end - Prevent causing expired keys from impacting new joins
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+
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}
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private int getMaximumFlyingTicks(Entity vehicle) {
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@@ -3434,6 +3442,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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private void resetPlayerChatState(RemoteChatSession session) {
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this.chatSession = session;
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+ this.hasLoggedExpiry = false; // Paper - Prevent causing expired keys from impacting new joins
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this.signedMessageDecoder = session.createMessageDecoder(this.player.getUUID());
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this.chatMessageChain.append(() -> {
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this.player.setChatSession(session);
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