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bc127ea819
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: eec4aab0 SPIGOT-6657: Add getPlayer to SheepDyeWoolEvent 205213c6 SPIGOT-6656: CauldronLevelChangeEvent is not fired correctly when dripstone fills the cauldron CraftBukkit Changes: b8c522d5 SPIGOT-6657: Add getPlayer to SheepDyeWoolEvent f04a77dc SPIGOT-6656: CauldronLevelChangeEvent is not fired correctly when dripstone fills the cauldron d1dbcebc SPIGOT-6653: Canceling snow bucket placement removes snow from bucket 4f34a67b #891: Fix scheduler task ID overflow and duplication issues Spigot Changes: d03d7f12 BUILDTOOLS-604: Rebuild patches
76 lines
3.8 KiB
Diff
76 lines
3.8 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: Fri, 16 Nov 2018 23:08:50 -0500
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Subject: [PATCH] Book Size Limits
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Puts some limits on the size of books.
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diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index 11d628869a9a6eda8bf21a4f213ff23ad753b18e..4c97fa63d912548324e93f366c86666d52738bfb 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -347,6 +347,13 @@ public class PaperConfig {
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}
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}
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+ public static int maxBookPageSize = 2560;
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+ public static double maxBookTotalSizeMultiplier = 0.98D;
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+ private static void maxBookSize() {
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+ maxBookPageSize = Math.min(8192, getInt("settings.book-size.page-max", maxBookPageSize));
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+ maxBookTotalSizeMultiplier = getDouble("settings.book-size.total-multiplier", maxBookTotalSizeMultiplier);
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+ }
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+
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public static boolean asyncChunks = false;
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private static void asyncChunks() {
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ConfigurationSection section;
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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 a615821cf605208c61be27f8bd026437b799de14..0103c76c183d0e866a98c26f2d1cf557ba4f67e8 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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@@ -1001,6 +1001,45 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
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@Override
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public void handleEditBook(ServerboundEditBookPacket packet) {
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+ // Paper start
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+ if (!this.cserver.isPrimaryThread()) {
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+ List<String> pageList = packet.getPages();
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+ long byteTotal = 0;
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+ int maxBookPageSize = com.destroystokyo.paper.PaperConfig.maxBookPageSize;
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+ double multiplier = Math.max(0.3D, Math.min(1D, com.destroystokyo.paper.PaperConfig.maxBookTotalSizeMultiplier));
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+ long byteAllowed = maxBookPageSize;
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+ for (String testString : pageList) {
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+ int byteLength = testString.getBytes(java.nio.charset.StandardCharsets.UTF_8).length;
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+ if (byteLength > 256 * 4) {
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+ ServerGamePacketListenerImpl.LOGGER.warn(this.player.getScoreboardName() + " tried to send a book with with a page too large!");
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+ server.scheduleOnMain(() -> this.disconnect("Book too large!"));
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+ return;
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+ }
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+ byteTotal += byteLength;
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+ int length = testString.length();
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+ int multibytes = 0;
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+ if (byteLength != length) {
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+ for (char c : testString.toCharArray()) {
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+ if (c > 127) {
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+ multibytes++;
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+ }
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+ }
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+ }
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+ byteAllowed += (maxBookPageSize * Math.min(1, Math.max(0.1D, (double) length / 255D))) * multiplier;
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+
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+ if (multibytes > 1) {
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+ // penalize MB
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+ byteAllowed -= multibytes;
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+ }
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+ }
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+
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+ if (byteTotal > byteAllowed) {
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+ ServerGamePacketListenerImpl.LOGGER.warn(this.player.getScoreboardName() + " tried to send too large of a book. Book Size: " + byteTotal + " - Allowed: "+ byteAllowed + " - Pages: " + pageList.size());
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+ server.scheduleOnMain(() -> this.disconnect("Book too large!"));
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+ return;
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+ }
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+ }
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+ // Paper end
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// CraftBukkit start
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if (this.lastBookTick + 20 > MinecraftServer.currentTick) {
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this.disconnect("Book edited too quickly!");
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