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8c5b837e05
Firstly, the old methods all routed to the CompletableFuture method. However, the CF method could not guarantee that if the caller was off-main that the future would be "completed" on-main. Since the callback methods used the CF one, this meant that the callback methods did not guarantee that the callbacks were to be called on the main thread. Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb) so that the methods with the callback are guaranteed to invoke the callback on the main thread. The CF behavior remains unchanged; it may still appear to complete on main if invoked off-main. Secondly, remove the scheduleOnMain invocation in the async chunk completion. This unnecessarily delays the callback by 1 tick. Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which will load chunks within an area. This method is provided as a helper as keeping all chunks loaded within an area can be complicated to implement for plugins (due to the lacking ticket API), and is already implemented internally anyways. Fourthly, remove the ticket addition that occured with getChunkAt and getChunkAtAsync. The ticket addition may delay the unloading of the chunk unnecessarily. It also fixes a very rare timing bug where the future/callback would be completed after the chunk unloads.
53 lines
2.6 KiB
Diff
53 lines
2.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Nassim Jahnke <nassim@njahnke.dev>
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Date: Sat, 21 Sep 2024 22:01:52 +0200
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Subject: [PATCH] Fix PlayerCommandPreprocessEvent on signed commands
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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 6a5fc3f92b5d56bedc20054b36f4513fc8bab303..fc64c09f466e6a0fb3eb6aa47f28f90748e81ce6 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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@@ -2196,24 +2196,32 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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PlayerCommandPreprocessEvent event = new PlayerCommandPreprocessEvent(this.getCraftPlayer(), command, new LazyPlayerSet(this.server));
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this.cserver.getPluginManager().callEvent(event);
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-
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- if (event.isCancelled()) {
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- return;
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- }
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command = event.getMessage().substring(1);
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- ParseResults<CommandSourceStack> parseresults = this.parseCommand(command);
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- // CraftBukkit end
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-
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- Map map;
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+ // Paper start - Fix cancellation and message changing
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+ ParseResults<CommandSourceStack> parseresults = this.parseCommand(packet.command());
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+ Map<String, PlayerChatMessage> map;
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try {
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- map = (packet.command().equals(command)) ? this.collectSignedArguments(packet, SignableCommand.of(parseresults), lastSeenMessages) : Collections.emptyMap(); // CraftBukkit
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+ // Always parse the original command to add to the chat chain
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+ map = this.collectSignedArguments(packet, SignableCommand.of(parseresults), lastSeenMessages);
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} catch (SignedMessageChain.DecodeException signedmessagechain_a) {
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this.handleMessageDecodeFailure(signedmessagechain_a);
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return;
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}
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+ if (event.isCancelled()) {
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+ // Only now are we actually good to return
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+ return;
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+ }
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+
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+ // Remove signed parts if the command was changed
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+ if (!command.equals(packet.command())) {
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+ parseresults = this.parseCommand(command);
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+ map = Collections.emptyMap();
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+ }
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+ // Paper end - Fix cancellation and message changing
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+
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CommandSigningContext.SignedArguments commandsigningcontext_a = new CommandSigningContext.SignedArguments(map);
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parseresults = Commands.<CommandSourceStack>mapSource(parseresults, (commandlistenerwrapper) -> { // CraftBukkit - decompile error
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