mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-18 12:48:53 +01:00
da9d110d5b
This patch does not appear to be doing anything useful, and may hide errors. Currently, the save logic does not run through this path either so it did not do anything. Additionally, properly implement support for handling RegionFileSizeException in Moonrise.
62 lines
3.2 KiB
Diff
62 lines
3.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: egg82 <eggys82@gmail.com>
|
|
Date: Sat, 11 Sep 2021 22:55:14 +0200
|
|
Subject: [PATCH] Add root/admin user detection
|
|
|
|
This patch detects whether or not the server is currently executing as a privileged user and spits out a warning.
|
|
The warning serves as a sort-of PSA for newer server admins who don't understand the risks of running as root.
|
|
We've seen plenty of bad/malicious plugins hit markets, and there's been a few close-calls with exploits in the past.
|
|
Hopefully this helps mitigate some potential damage to servers, even if it is just a warning.
|
|
|
|
Co-authored-by: Noah van der Aa <ndvdaa@gmail.com>
|
|
|
|
diff --git a/src/main/java/io/papermc/paper/util/ServerEnvironment.java b/src/main/java/io/papermc/paper/util/ServerEnvironment.java
|
|
new file mode 100644
|
|
index 0000000000000000000000000000000000000000..68098dfe716e93aafcca4d8d5b5a81d8648b3654
|
|
--- /dev/null
|
|
+++ b/src/main/java/io/papermc/paper/util/ServerEnvironment.java
|
|
@@ -0,0 +1,23 @@
|
|
+package io.papermc.paper.util;
|
|
+
|
|
+import com.sun.security.auth.module.NTSystem;
|
|
+import com.sun.security.auth.module.UnixSystem;
|
|
+import java.util.Set;
|
|
+import org.apache.commons.lang.SystemUtils;
|
|
+
|
|
+public class ServerEnvironment {
|
|
+ private static final boolean RUNNING_AS_ROOT_OR_ADMIN;
|
|
+ private static final String WINDOWS_HIGH_INTEGRITY_LEVEL = "S-1-16-12288";
|
|
+
|
|
+ static {
|
|
+ if (SystemUtils.IS_OS_WINDOWS) {
|
|
+ RUNNING_AS_ROOT_OR_ADMIN = Set.of(new NTSystem().getGroupIDs()).contains(WINDOWS_HIGH_INTEGRITY_LEVEL);
|
|
+ } else {
|
|
+ RUNNING_AS_ROOT_OR_ADMIN = new UnixSystem().getUid() == 0;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ public static boolean userIsRootOrAdmin() {
|
|
+ return RUNNING_AS_ROOT_OR_ADMIN;
|
|
+ }
|
|
+}
|
|
diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
|
|
index 21d6f728d6ecd35a05933e9406a386c36135a456..ac7fc2497b860a143ef08498f5f477a373a29be7 100644
|
|
--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
|
|
+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
|
|
@@ -193,6 +193,16 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
|
|
DedicatedServer.LOGGER.warn("To start the server with more ram, launch it as \"java -Xmx1024M -Xms1024M -jar minecraft_server.jar\"");
|
|
}
|
|
|
|
+ // Paper start - detect running as root
|
|
+ if (io.papermc.paper.util.ServerEnvironment.userIsRootOrAdmin()) {
|
|
+ DedicatedServer.LOGGER.warn("****************************");
|
|
+ DedicatedServer.LOGGER.warn("YOU ARE RUNNING THIS SERVER AS AN ADMINISTRATIVE OR ROOT USER. THIS IS NOT ADVISED.");
|
|
+ DedicatedServer.LOGGER.warn("YOU ARE OPENING YOURSELF UP TO POTENTIAL RISKS WHEN DOING THIS.");
|
|
+ DedicatedServer.LOGGER.warn("FOR MORE INFORMATION, SEE https://madelinemiller.dev/blog/root-minecraft-server/");
|
|
+ DedicatedServer.LOGGER.warn("****************************");
|
|
+ }
|
|
+ // Paper end - detect running as root
|
|
+
|
|
DedicatedServer.LOGGER.info("Loading properties");
|
|
DedicatedServerProperties dedicatedserverproperties = this.settings.getProperties();
|
|
|