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Improvements to Book Size checks

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If you downloaded the build before this, delete the settings.book-size
section in paper.yml to get new values.
This commit is contained in:
Aikar 2018-11-17 00:34:58 -05:00
parent 38b6799b58
commit d5408369ac
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GPG key ID: 401ADFC9891FAAFE
1 changed files with 17 additions and 7 deletions
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24
Spigot-Server-Patches/0410-Book-Size-Limits.patch
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@ -1,4 +1,4 @@
From aa0ed5b528231c1be6efb064fbc79d4a4f5524c4 Mon Sep 17 00:00:00 2001
From 5eab7e52ae72047453b934937e457646f4c6bfd3 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 16 Nov 2018 23:08:50 -0500
Subject: [PATCH] Book Size Limits
@ -6,7 +6,7 @@ Subject: [PATCH] Book Size Limits
Puts some limits on the size of books.
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index bc74ea2f09..ea18ba5880 100644
index bc74ea2f09..beec4e33c6 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -458,4 +458,11 @@ public class PaperConfig {
@ -14,18 +14,18 @@ index bc74ea2f09..ea18ba5880 100644
}
}
+
+ public static int maxBookPageSize = 640;
+ public static double maxBookTotalSizeMultiplier = 0.9D;
+ public static int maxBookPageSize = 2560;
+ public static double maxBookTotalSizeMultiplier = 0.98D;
+ private static void maxBookSize() {
+ maxBookPageSize = getInt("settings.book-size.page-max", maxBookPageSize);
+ maxBookTotalSizeMultiplier = getDouble("settings.book-size.total-multiplier", maxBookTotalSizeMultiplier);
+ }
}
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 3427e95e60..c4136640d2 100644
index 3427e95e60..462ab49762 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -750,6 +750,28 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
@@ -750,6 +750,38 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
}
public void a(PacketPlayInBEdit packetplayinbedit) {
@ -46,8 +46,18 @@ index 3427e95e60..c4136640d2 100644
+ minecraftServer.postToMainThread(() -> this.disconnect("Book too large!"));
+ return;
+ }
+ byteAllowed += (maxBookPageSize * multiplier);
+ int length = testString.length();
+ int multibytes = byteLength == length ? byteLength : (int) Math.round((double) byteLength / (double) length);
+ for (int x = 1; x < multibytes; x++) {
+ multiplier *= multiplier;
+ }
+ byteAllowed += (maxBookPageSize * Math.min(1, Math.max(0.1D, (double) length / 255D))) * multiplier;
+ multiplier *= multiplier;
+
+ if (multibytes > 1) {
+ // penalize MB some more
+ byteAllowed -= length;
+ }
+ }
+ }
+ // Paper end