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Allow enabling sand duping (#10191)

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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.
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Owen 2024-03-03 17:05:34 -05:00 • committed by GitHub
parent b21eb4d9a4
commit 89d51d5f29
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673 changed files with 157 additions and 189 deletions
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patches/server/0447-Add-ignore-discounts-API.patch Normal file
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@ -0,0 +1,154 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Mon, 9 Nov 2020 20:44:51 +0100
Subject: [PATCH] Add ignore discounts API
diff --git a/src/main/java/net/minecraft/world/entity/npc/Villager.java b/src/main/java/net/minecraft/world/entity/npc/Villager.java
index 0a1a70edda66bf348b3e3a9df4670cd81561cd1f..a01e089ed7689485a7ac33ab29bc27c4b68bc1df 100644
--- a/src/main/java/net/minecraft/world/entity/npc/Villager.java
+++ b/src/main/java/net/minecraft/world/entity/npc/Villager.java
@@ -491,6 +491,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
while (iterator.hasNext()) {
MerchantOffer merchantrecipe = (MerchantOffer) iterator.next();
+ if (merchantrecipe.ignoreDiscounts) continue; // Paper - Add ignore discounts API
merchantrecipe.addToSpecialPriceDiff(-Mth.floor((float) i * merchantrecipe.getPriceMultiplier()));
}
@@ -503,6 +504,7 @@ public class Villager extends AbstractVillager implements ReputationEventHandler
while (iterator1.hasNext()) {
MerchantOffer merchantrecipe1 = (MerchantOffer) iterator1.next();
+ if (merchantrecipe1.ignoreDiscounts) continue; // Paper - Add ignore discounts API
double d0 = 0.3D + 0.0625D * (double) j;
int k = (int) Math.floor(d0 * (double) merchantrecipe1.getBaseCostA().getCount());
diff --git a/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java b/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
index 7da5c4a45f8fd46fedd4386e0faac57445475e3a..02feea12c998f37098b72becf6bfaf6b27d155de 100644
--- a/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
+++ b/src/main/java/net/minecraft/world/item/trading/MerchantOffer.java
@@ -19,6 +19,7 @@ public class MerchantOffer {
public int demand;
public float priceMultiplier;
public int xp;
+ public boolean ignoreDiscounts; // Paper - Add ignore discounts API
// CraftBukkit start
private CraftMerchantRecipe bukkitHandle;
@@ -31,7 +32,15 @@ public class MerchantOffer {
}
public MerchantOffer(ItemStack itemstack, ItemStack itemstack1, ItemStack itemstack2, int uses, int maxUses, int experience, float priceMultiplier, int demand, CraftMerchantRecipe bukkit) {
- this(itemstack, itemstack1, itemstack2, uses, maxUses, experience, priceMultiplier, demand);
+ // Paper start - Add ignore discounts API
+ this(itemstack, itemstack1, itemstack2, uses, maxUses, experience, priceMultiplier, demand, false, bukkit);
+ }
+ public MerchantOffer(ItemStack itemstack, ItemStack itemstack1, ItemStack itemstack2, int uses, int maxUses, int experience, float priceMultiplier, boolean ignoreDiscounts, CraftMerchantRecipe bukkit) {
+ this(itemstack, itemstack1, itemstack2, uses, maxUses, experience, priceMultiplier, 0, ignoreDiscounts, bukkit);
+ }
+ public MerchantOffer(ItemStack itemstack, ItemStack itemstack1, ItemStack itemstack2, int uses, int maxUses, int experience, float priceMultiplier, int demand, boolean ignoreDiscounts, CraftMerchantRecipe bukkit) {
+ this(itemstack, itemstack1, itemstack2, uses, maxUses, experience, priceMultiplier, demand, ignoreDiscounts);
+ // Paper end - Add ignore discounts API
this.bukkitHandle = bukkit;
}
// CraftBukkit end
@@ -63,6 +72,7 @@ public class MerchantOffer {
this.specialPriceDiff = nbt.getInt("specialPrice");
this.demand = nbt.getInt("demand");
+ this.ignoreDiscounts = nbt.getBoolean("Paper.IgnoreDiscounts"); // Paper - Add ignore discounts API
}
public MerchantOffer(ItemStack buyItem, ItemStack sellItem, int maxUses, int merchantExperience, float priceMultiplier) {
@@ -74,10 +84,19 @@ public class MerchantOffer {
}
public MerchantOffer(ItemStack firstBuyItem, ItemStack secondBuyItem, ItemStack sellItem, int uses, int maxUses, int merchantExperience, float priceMultiplier) {
- this(firstBuyItem, secondBuyItem, sellItem, uses, maxUses, merchantExperience, priceMultiplier, 0);
+ // Paper start - Add ignore discounts API
+ this(firstBuyItem, secondBuyItem, sellItem, uses, maxUses, merchantExperience, priceMultiplier, false);
+ }
+ public MerchantOffer(ItemStack firstBuyItem, ItemStack secondBuyItem, ItemStack sellItem, int uses, int maxUses, int merchantExperience, float priceMultiplier, boolean ignoreDiscounts) {
+ this(firstBuyItem, secondBuyItem, sellItem, uses, maxUses, merchantExperience, priceMultiplier, 0, ignoreDiscounts);
}
public MerchantOffer(ItemStack firstBuyItem, ItemStack secondBuyItem, ItemStack sellItem, int uses, int maxUses, int merchantExperience, float priceMultiplier, int demandBonus) {
+ this(firstBuyItem, secondBuyItem, sellItem, uses, maxUses, merchantExperience, priceMultiplier, demandBonus, false);
+ }
+ public MerchantOffer(ItemStack firstBuyItem, ItemStack secondBuyItem, ItemStack sellItem, int uses, int maxUses, int merchantExperience, float priceMultiplier, int demandBonus, boolean ignoreDiscounts) {
+ this.ignoreDiscounts = ignoreDiscounts;
+ // Paper end - Add ignore discounts API
this.rewardExp = true;
this.xp = 1;
this.baseCostA = firstBuyItem;
@@ -210,6 +229,7 @@ public class MerchantOffer {
nbttagcompound.putFloat("priceMultiplier", this.priceMultiplier);
nbttagcompound.putInt("specialPrice", this.specialPriceDiff);
nbttagcompound.putInt("demand", this.demand);
+ nbttagcompound.putBoolean("Paper.IgnoreDiscounts", this.ignoreDiscounts); // Paper - Add ignore discounts API
return nbttagcompound;
}
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
index c015b34d2b13a759783da7c0c06dd0563d35fc88..5741a233fb1dd8ad0f83a09b44476a4b88e6aa16 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMerchantRecipe.java
@@ -18,11 +18,19 @@ public class CraftMerchantRecipe extends MerchantRecipe {
@Deprecated
public CraftMerchantRecipe(ItemStack result, int uses, int maxUses, boolean experienceReward, int experience, float priceMultiplier) {
- this(result, uses, maxUses, experienceReward, experience, priceMultiplier, 0, 0);
+ // Paper start - add ignoreDiscounts param
+ this(result, uses, maxUses, experienceReward, experience, priceMultiplier, 0, 0, false);
+ }
+ public CraftMerchantRecipe(ItemStack result, int uses, int maxUses, boolean experienceReward, int experience, float priceMultiplier, boolean ignoreDiscounts) {
+ this(result, uses, maxUses, experienceReward, experience, priceMultiplier, 0, 0, ignoreDiscounts);
}
public CraftMerchantRecipe(ItemStack result, int uses, int maxUses, boolean experienceReward, int experience, float priceMultiplier, int demand, int specialPrice) {
- super(result, uses, maxUses, experienceReward, experience, priceMultiplier, demand, specialPrice);
+ this(result, uses, maxUses, experienceReward, experience, priceMultiplier, demand, specialPrice, false);
+ }
+ public CraftMerchantRecipe(ItemStack result, int uses, int maxUses, boolean experienceReward, int experience, float priceMultiplier, int demand, int specialPrice, boolean ignoreDiscounts) {
+ super(result, uses, maxUses, experienceReward, experience, priceMultiplier, demand, specialPrice, ignoreDiscounts);
+ // Paper end
this.handle = new net.minecraft.world.item.trading.MerchantOffer(
net.minecraft.world.item.ItemStack.EMPTY,
net.minecraft.world.item.ItemStack.EMPTY,
@@ -32,6 +40,7 @@ public class CraftMerchantRecipe extends MerchantRecipe {
experience,
priceMultiplier,
demand,
+ ignoreDiscounts, // Paper - add ignoreDiscounts param
this
);
this.setSpecialPrice(specialPrice);
@@ -108,6 +117,18 @@ public class CraftMerchantRecipe extends MerchantRecipe {
this.handle.priceMultiplier = priceMultiplier;
}
+ // Paper start
+ @Override
+ public boolean shouldIgnoreDiscounts() {
+ return this.handle.ignoreDiscounts;
+ }
+
+ @Override
+ public void setIgnoreDiscounts(boolean ignoreDiscounts) {
+ this.handle.ignoreDiscounts = ignoreDiscounts;
+ }
+ // Paper end
+
public net.minecraft.world.item.trading.MerchantOffer toMinecraft() {
List<ItemStack> ingredients = this.getIngredients();
Preconditions.checkState(!ingredients.isEmpty(), "No offered ingredients");
@@ -122,7 +143,7 @@ public class CraftMerchantRecipe extends MerchantRecipe {
if (recipe instanceof CraftMerchantRecipe) {
return (CraftMerchantRecipe) recipe;
} else {
- CraftMerchantRecipe craft = new CraftMerchantRecipe(recipe.getResult(), recipe.getUses(), recipe.getMaxUses(), recipe.hasExperienceReward(), recipe.getVillagerExperience(), recipe.getPriceMultiplier(), recipe.getDemand(), recipe.getSpecialPrice());
+ CraftMerchantRecipe craft = new CraftMerchantRecipe(recipe.getResult(), recipe.getUses(), recipe.getMaxUses(), recipe.hasExperienceReward(), recipe.getVillagerExperience(), recipe.getPriceMultiplier(), recipe.getDemand(), recipe.getSpecialPrice(), recipe.shouldIgnoreDiscounts()); // Paper - shouldIgnoreDiscounts
craft.setIngredients(recipe.getIngredients());
return craft;