Paper/Spigot-Server-Patches/0368-Support-Overriding-World-Seeds.patch
Andrew Steinborn 7141632abf Add Velocity IP forwarding support (#1557)
While Velocity supports BungeeCord-style IP forwarding, it is not secure. Users
have a lot of problems setting up firewalls or setting up plugins like IPWhitelist.
Further, the BungeeCord IP forwarding protocol still retains essentially its original
form, when there is brand new support for custom login plugin messages in 1.13.

Velocity's modern IP forwarding uses an HMAC-SHA256 code to ensure authenticity
of messages, is packed into a binary format that is smaller than BungeeCord's
forwarding, and is integrated into the Minecraft login process by using the 1.13
login plugin message packet.
2018-10-18 20:44:59 -04:00

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5.1 KiB
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From e91db311eb98eded90293aa8a8ffe59f4439fb27 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 17 Sep 2018 23:05:31 -0400
Subject: [PATCH] Support Overriding World Seeds
Allows you to add to paper.yml
seed-overrides:
world_name: some seed value
This will ignore every where a seed is set/created/loaded and force
a world to use the specified seed.
This seed will end up being saved to the world data file, so it is
a permanent change in that it won't go back if you remove it from paper.yml
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index 4061073b2..b703e0848 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -11,6 +11,7 @@ import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
+import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
@@ -20,6 +21,7 @@ import com.google.common.collect.Lists;
import net.minecraft.server.MinecraftServer;
import org.bukkit.Bukkit;
import org.bukkit.command.Command;
+import org.bukkit.configuration.ConfigurationSection;
import org.bukkit.configuration.InvalidConfigurationException;
import org.bukkit.configuration.file.YamlConfiguration;
import co.aikar.timings.Timings;
@@ -364,4 +366,23 @@ public class PaperConfig {
}
tabSpamLimit = getInt("settings.spam-limiter.tab-spam-limit", tabSpamLimit);
}
+
+ public static Map<String, Long> seedOverride = new java.util.HashMap<>();
+ private static void worldSeedOverrides() {
+ ConfigurationSection seeds = config.getConfigurationSection("seed-overrides");
+ if (seeds != null) {
+ TimingsManager.hiddenConfigs.add("seed-overrides");
+ for (String key : seeds.getKeys(false)) {
+ String seedString = seeds.getString(key);
+ long seed;
+ try {
+ seed = Long.parseLong(seedString);
+ } catch (Exception e) {
+ seed = (long) seedString.hashCode();
+ }
+ log("Seed Override: " + key + " => " + seed);
+ seedOverride.put(key, seed);
+ }
+ }
+ }
}
diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 81cda5df5..fb6232031 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -350,7 +350,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
this.convertWorld(name); // Run conversion now
org.bukkit.generator.ChunkGenerator gen = this.server.getGenerator(name);
- WorldSettings worldsettings = new WorldSettings(i, this.getGamemode(), this.getGenerateStructures(), this.isHardcore(), worldtype);
+ WorldSettings worldsettings = new WorldSettings(com.destroystokyo.paper.PaperConfig.seedOverride.getOrDefault(name, i), this.getGamemode(), this.getGenerateStructures(), this.isHardcore(), worldtype); // Paper
worldsettings.setGeneratorSettings(jsonelement);
if (j == 0) {
diff --git a/src/main/java/net/minecraft/server/WorldData.java b/src/main/java/net/minecraft/server/WorldData.java
index db07e5f9e..1b188f96e 100644
--- a/src/main/java/net/minecraft/server/WorldData.java
+++ b/src/main/java/net/minecraft/server/WorldData.java
@@ -110,7 +110,7 @@ public class WorldData {
this.d = nbttagcompound2.getBoolean("Snapshot");
}
- this.e = nbttagcompound.getLong("RandomSeed");
+ this.e = com.destroystokyo.paper.PaperConfig.seedOverride.getOrDefault(nbttagcompound.getString("LevelName"), nbttagcompound.getLong("RandomSeed")); // Paper
if (nbttagcompound.hasKeyOfType("generatorName", 8)) {
String s = nbttagcompound.getString("generatorName");
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index 58811a73d..8f6c44a3c 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -982,7 +982,7 @@ public final class CraftServer implements Server {
WorldData worlddata = sdm.getWorldData();
WorldSettings worldSettings = null;
if (worlddata == null) {
- worldSettings = new WorldSettings(creator.seed(), EnumGamemode.getById(getDefaultGameMode().getValue()), generateStructures, hardcore, type);
+ worldSettings = new WorldSettings(com.destroystokyo.paper.PaperConfig.seedOverride.getOrDefault(name, creator.seed()), EnumGamemode.getById(getDefaultGameMode().getValue()), generateStructures, hardcore, type); // Paper
JsonElement parsedSettings = new JsonParser().parse(creator.generatorSettings());
if (parsedSettings.isJsonObject()) {
worldSettings.setGeneratorSettings(parsedSettings.getAsJsonObject());
--
2.19.1