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2641c02193
Upstream has released updates that appear to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: 69fa4695 Add some missing deprecation annotations f850da2e Update Maven plugins/versions 8d8400db Use regular compiler seeing as ECJ doesn't support Java 21 JRE c29e1688 Revert "BUILDTOOLS-676: Downgrade Maven compiler version" 07bce714 SPIGOT-7355: More field renames and fixes 6a8ea764 Fix bad merge in penultimate commit 50a7920c Fix imports in previous commit 83640dd1 PR-995: Add required feature to MinecraftExperimental for easy lookups fc1f96cf BUILDTOOLS-676: Downgrade Maven compiler version CraftBukkit Changes: 90f1059ba Fix item placement 661afb43c SPIGOT-7633: Clearer error message for missing particle data 807b465b3 SPIGOT-7634: Armadillo updates infrequently 590cf09a8 Fix unit tests always seeing Mojang server as unavailable 7c7ac5eb2 SPIGOT-7636: Fix clearing ItemMeta 4a72905cf SPIGOT-7635: Fix Player#transfer and cookie methods ebb50e136 Fix incorrect Vault implementation b33fed8b7 Update Maven plugins/versions 6f00f0608 SPIGOT-7632: Control middle clicking chest does not copy contents db821f405 Use regular compiler seeing as ECJ doesn't support Java 21 JRE 8a2976737 Revert "BUILDTOOLS-676: Downgrade Maven compiler version" 0297f87bb SPIGOT-7355: More field renames and fixes 2d03bdf6a SPIGOT-7629: Fix loading banner patterns e77951fac Fix equality of deserialized display names c66f3e4fd SPIGOT-7631: Fix deserialisation of BlockStateMeta 9c2c7be8d SPIGOT-7630: Fix crash saving unticked leashed entities 8c1e7c841 PR-1384: Disable certain PlayerProfile tests, if Mojang's services or internet are not available ced93d572 SPIGOT-7626: sendSignChange() has no effect c77362cae SPIGOT-7625: ItemStack with lore cannot be serialized in 1.20.5 ff2004387 SPIGOT-7620: Fix server crash when hoppers transfer items to double chests 8b4abeb03 BUILDTOOLS-676: Downgrade Maven compiler version
57 lines
3.1 KiB
Diff
57 lines
3.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Wed, 27 Feb 2019 22:18:40 -0500
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Subject: [PATCH] Limit Client Sign length more
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modified clients can send more data from the client
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to the server and it would get stored on the sign as sent.
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Mojang has a limit of 384 which is much higher than reasonable.
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the client can barely render around 16 characters as-is, but formatting
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codes can get it to be more than 16 actual length.
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Set a limit of 80 which should give an average of 16 characters 2
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sets of legacy formatting codes which should be plenty for all uses.
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This does not strip any existing data from the NBT as plugins
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may use this for storing data out of the rendered area.
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it only impacts data sent from the client.
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Set -DPaper.maxSignLength=XX to change limit or -1 to disable
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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 afe102a677546dd16b91433c7a50c62a05a00b20..4e649fe68c6d0cf42e35f821457064656410d823 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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@@ -299,6 +299,7 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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private final MessageSignatureCache messageSignatureCache = MessageSignatureCache.createDefault();
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private final FutureChain chatMessageChain;
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private boolean waitingForSwitchToConfig;
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+ private static final int MAX_SIGN_LINE_LENGTH = Integer.getInteger("Paper.maxSignLength", 80); // Paper - Limit client sign length
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public ServerGamePacketListenerImpl(MinecraftServer server, Connection connection, ServerPlayer player, CommonListenerCookie clientData) {
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super(server, connection, clientData, player); // CraftBukkit
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@@ -3138,7 +3139,19 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
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@Override
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public void handleSignUpdate(ServerboundSignUpdatePacket packet) {
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- List<String> list = (List) Stream.of(packet.getLines()).map(ChatFormatting::stripFormatting).collect(Collectors.toList());
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+ // Paper start - Limit client sign length
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+ String[] lines = packet.getLines();
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+ for (int i = 0; i < lines.length; ++i) {
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+ if (MAX_SIGN_LINE_LENGTH > 0 && lines[i].length() > MAX_SIGN_LINE_LENGTH) {
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+ // This handles multibyte characters as 1
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+ int offset = lines[i].codePoints().limit(MAX_SIGN_LINE_LENGTH).map(Character::charCount).sum();
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+ if (offset < lines[i].length()) {
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+ lines[i] = lines[i].substring(0, offset); // this will break any filtering, but filtering is NYI as of 1.17
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+ }
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+ }
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+ }
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+ List<String> list = (List) Stream.of(lines).map(ChatFormatting::stripFormatting).collect(Collectors.toList());
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+ // Paper end - Limit client sign length
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this.filterTextPacket(list).thenAcceptAsync((list1) -> {
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this.updateSignText(packet, list1);
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