From a5339fccea2bd59e7dff197d710845ab8f08656c Mon Sep 17 00:00:00 2001 From: Zach Brown Date: Sat, 13 May 2017 20:11:21 -0500 Subject: [PATCH] Add system property to disable book size limits If anyone comes in with a watchdog crash related to books after this patch you will not only be publicly shamed but also made an example of. Disables the security limits on books entirely, allowing plugins AND players to make books with as much data as they want. Do not use this without limiting incoming data from packets in some other way. diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBook.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBook.java index 6ff1a2dcd6..64a9399527 100644 --- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBook.java +++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaBook.java @@ -40,6 +40,7 @@ public class CraftMetaBook extends CraftMetaItem implements BookMeta { static final int MAX_PAGES = 50; static final int MAX_PAGE_LENGTH = 320; // 256 limit + 64 characters to allow for psuedo colour codes static final int MAX_TITLE_LENGTH = 32; + private static final boolean OVERRIDE_CHECKS = Boolean.getBoolean("disable.book-limits"); // Paper - Add override protected String title; protected String author; @@ -196,7 +197,7 @@ public class CraftMetaBook extends CraftMetaItem implements BookMeta { if (title == null) { this.title = null; return true; - } else if (title.length() > MAX_TITLE_LENGTH) { + } else if (title.length() > MAX_TITLE_LENGTH && !OVERRIDE_CHECKS) { // Paper - Add override return false; } @@ -232,7 +233,7 @@ public class CraftMetaBook extends CraftMetaItem implements BookMeta { throw new IllegalArgumentException("Invalid page number " + page + "/" + pages.size()); } - String newText = text == null ? "" : text.length() > MAX_PAGE_LENGTH ? text.substring(0, MAX_PAGE_LENGTH) : text; + String newText = text == null ? "" : text.length() > MAX_PAGE_LENGTH && !OVERRIDE_CHECKS ? text.substring(0, MAX_PAGE_LENGTH) : text; pages.set(page - 1, CraftChatMessage.fromString(newText, true)[0]); } @@ -244,13 +245,13 @@ public class CraftMetaBook extends CraftMetaItem implements BookMeta { public void addPage(final String... pages) { for (String page : pages) { - if (this.pages.size() >= MAX_PAGES) { + if (this.pages.size() >= MAX_PAGES && !OVERRIDE_CHECKS) { return; } if (page == null) { page = ""; - } else if (page.length() > MAX_PAGE_LENGTH) { + } else if (page.length() > MAX_PAGE_LENGTH && !OVERRIDE_CHECKS) { // Paper - Add override page = page.substring(0, MAX_PAGE_LENGTH); } -- 2.19.0