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Since 1.21.2, vanilla split relative teleportation flags into position and delta/velocity flags into separate enum entries. This highlighted a design flaw in the paper api addition for teleport flags, which just simply mirrored internals while also only being able to apply the delta/velocity part of a flag, given the teleport target is always absolute in the API. This patch proposes to simply no longer expose the non-velocity related flags to the API, instead marking the entire Relative enum as being purely velocity related, as non-velocity related flags are not useful to callers. This was done over simply exposing all internal flags, as another vanilla change to the internal enum would result in the same breakage. The newly proposed API *only* promises that the passed flags prevent the loss of velocity in the specific axis/context, which should be independent enough of vanillas specific implementation of this feature.
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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