From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Noah van der Aa Date: Sat, 22 Oct 2022 14:47:45 +0200 Subject: [PATCH] Detect headless JREs Crashes caused by the missing AWT dependency come up in the support channels fairly often. This patch detects the missing dependency and stops the server with a clear error message, containing a link to instructions on how to install a non-headless JRE. diff --git a/src/main/java/io/papermc/paper/util/ServerEnvironment.java b/src/main/java/io/papermc/paper/util/ServerEnvironment.java index 6bd0afddbcc461149dfe9a5c7a86fff6ea13a5f1..148d233f4f5278ff39eacdaa0f4f0e7d73be936a 100644 --- a/src/main/java/io/papermc/paper/util/ServerEnvironment.java +++ b/src/main/java/io/papermc/paper/util/ServerEnvironment.java @@ -37,4 +37,14 @@ public class ServerEnvironment { public static boolean userIsRootOrAdmin() { return RUNNING_AS_ROOT_OR_ADMIN; } + + public static String awtDependencyCheck() { + try { + new java.awt.Color(0); + } catch (UnsatisfiedLinkError e) { + return e.getClass().getName() + ": " + e.getMessage(); + } + + return null; + } } diff --git a/src/main/java/net/minecraft/server/Main.java b/src/main/java/net/minecraft/server/Main.java index 7a5e70c99716273d04f4cd28d80a38f6f6b3868e..aa19a24b10cc6f4f79bb9ad65f92f60735ac5387 100644 --- a/src/main/java/net/minecraft/server/Main.java +++ b/src/main/java/net/minecraft/server/Main.java @@ -175,6 +175,18 @@ public class Main { return; } + // Paper start - Detect headless JRE + String awtException = io.papermc.paper.util.ServerEnvironment.awtDependencyCheck(); + if (awtException != null) { + Main.LOGGER.error("You are using a headless JRE distribution."); + Main.LOGGER.error("This distribution is missing certain graphic libraries that the Minecraft server needs to function."); + Main.LOGGER.error("For instructions on how to install the non-headless JRE, see https://docs.papermc.io/misc/java-install"); + Main.LOGGER.error(""); + Main.LOGGER.error(awtException); + return; + } + // Paper end - Detect headless JRE + org.spigotmc.SpigotConfig.disabledAdvancements = spigotConfiguration.getStringList("advancements.disabled"); // Paper - fix SPIGOT-5885, must be set early in init // Paper start - fix SPIGOT-5824 File file;