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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
51 lines
2.5 KiB
Diff
51 lines
2.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Noah van der Aa <ndvdaa@gmail.com>
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Date: Sat, 22 Oct 2022 14:47:45 +0200
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Subject: [PATCH] Detect headless JREs
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Crashes caused by the missing AWT dependency come up in the support channels fairly often.
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This patch detects the missing dependency and stops the server with a clear error message,
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containing a link to instructions on how to install a non-headless JRE.
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diff --git a/src/main/java/io/papermc/paper/util/ServerEnvironment.java b/src/main/java/io/papermc/paper/util/ServerEnvironment.java
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index 6bd0afddbcc461149dfe9a5c7a86fff6ea13a5f1..148d233f4f5278ff39eacdaa0f4f0e7d73be936a 100644
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--- a/src/main/java/io/papermc/paper/util/ServerEnvironment.java
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+++ b/src/main/java/io/papermc/paper/util/ServerEnvironment.java
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@@ -37,4 +37,14 @@ public class ServerEnvironment {
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public static boolean userIsRootOrAdmin() {
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return RUNNING_AS_ROOT_OR_ADMIN;
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}
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+
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+ public static String awtDependencyCheck() {
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+ try {
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+ new java.awt.Color(0);
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+ } catch (UnsatisfiedLinkError e) {
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+ return e.getClass().getName() + ": " + e.getMessage();
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+ }
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+
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+ return null;
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+ }
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}
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diff --git a/src/main/java/net/minecraft/server/Main.java b/src/main/java/net/minecraft/server/Main.java
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index 7a5e70c99716273d04f4cd28d80a38f6f6b3868e..aa19a24b10cc6f4f79bb9ad65f92f60735ac5387 100644
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--- a/src/main/java/net/minecraft/server/Main.java
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+++ b/src/main/java/net/minecraft/server/Main.java
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@@ -175,6 +175,18 @@ public class Main {
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return;
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}
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+ // Paper start - Detect headless JRE
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+ String awtException = io.papermc.paper.util.ServerEnvironment.awtDependencyCheck();
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+ if (awtException != null) {
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+ Main.LOGGER.error("You are using a headless JRE distribution.");
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+ Main.LOGGER.error("This distribution is missing certain graphic libraries that the Minecraft server needs to function.");
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+ Main.LOGGER.error("For instructions on how to install the non-headless JRE, see https://docs.papermc.io/misc/java-install");
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+ Main.LOGGER.error("");
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+ Main.LOGGER.error(awtException);
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+ return;
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+ }
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+ // Paper end - Detect headless JRE
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+
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org.spigotmc.SpigotConfig.disabledAdvancements = spigotConfiguration.getStringList("advancements.disabled"); // Paper - fix SPIGOT-5885, must be set early in init
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// Paper start - fix SPIGOT-5824
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File file;
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