From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Sat, 16 May 2020 10:05:30 +0200
Subject: [PATCH] Add permission for command blocks


diff --git a/src/main/java/net/minecraft/server/BlockCommand.java b/src/main/java/net/minecraft/server/BlockCommand.java
index dd7066d1a72f5c6f54c1f40a7b694deb827410dc..6b353a99c04e0312f520f8559c05ddaf51c26aaf 100644
--- a/src/main/java/net/minecraft/server/BlockCommand.java
+++ b/src/main/java/net/minecraft/server/BlockCommand.java
@@ -105,7 +105,7 @@ public class BlockCommand extends BlockTileEntity {
     public EnumInteractionResult interact(IBlockData iblockdata, World world, BlockPosition blockposition, EntityHuman entityhuman, EnumHand enumhand, MovingObjectPositionBlock movingobjectpositionblock) {
         TileEntity tileentity = world.getTileEntity(blockposition);
 
-        if (tileentity instanceof TileEntityCommand && entityhuman.isCreativeAndOp()) {
+        if (tileentity instanceof TileEntityCommand && (entityhuman.isCreativeAndOp() || (entityhuman.isCreative() && entityhuman.getBukkitEntity().hasPermission("minecraft.commandblock")))) { // Paper - command block permission
             entityhuman.a((TileEntityCommand) tileentity);
             return EnumInteractionResult.a(world.isClientSide);
         } else {
diff --git a/src/main/java/net/minecraft/server/CommandBlockListenerAbstract.java b/src/main/java/net/minecraft/server/CommandBlockListenerAbstract.java
index 7e13b1cf6d92c3e0f2dab1ba1d42bd4f250e256c..3820acd65f3cd488dba964e6d9c458852570f4a0 100644
--- a/src/main/java/net/minecraft/server/CommandBlockListenerAbstract.java
+++ b/src/main/java/net/minecraft/server/CommandBlockListenerAbstract.java
@@ -179,7 +179,7 @@ public abstract class CommandBlockListenerAbstract implements ICommandListener {
     }
 
     public EnumInteractionResult a(EntityHuman entityhuman) {
-        if (!entityhuman.isCreativeAndOp()) {
+        if (!entityhuman.isCreativeAndOp() && !entityhuman.isCreative() && !entityhuman.getBukkitEntity().hasPermission("minecraft.commandblock")) { // Paper - command block permission
             return EnumInteractionResult.PASS;
         } else {
             if (entityhuman.getWorld().isClientSide) {
diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index 20e423267d03b5fa032925c8214e1e33dbfcfede..5b7f6f5504be294e4d5ff5a891644c8b45222ae2 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -607,7 +607,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
         PlayerConnectionUtils.ensureMainThread(packetplayinsetcommandblock, this, this.player.getWorldServer());
         if (!this.minecraftServer.getEnableCommandBlock()) {
             this.player.sendMessage(new ChatMessage("advMode.notEnabled"), SystemUtils.b);
-        } else if (!this.player.isCreativeAndOp()) {
+        } else if (!this.player.isCreativeAndOp() && !this.player.isCreative() && !this.player.getBukkitEntity().hasPermission("minecraft.commandblock")) { // Paper - command block permission
             this.player.sendMessage(new ChatMessage("advMode.notAllowed"), SystemUtils.b);
         } else {
             CommandBlockListenerAbstract commandblocklistenerabstract = null;
@@ -670,7 +670,7 @@ public class PlayerConnection implements PacketListenerPlayIn {
         PlayerConnectionUtils.ensureMainThread(packetplayinsetcommandminecart, this, this.player.getWorldServer());
         if (!this.minecraftServer.getEnableCommandBlock()) {
             this.player.sendMessage(new ChatMessage("advMode.notEnabled"), SystemUtils.b);
-        } else if (!this.player.isCreativeAndOp()) {
+        } else if (!this.player.isCreativeAndOp() && !this.player.isCreative() && !this.player.getBukkitEntity().hasPermission("minecraft.commandblock")) { // Paper - command block permission
             this.player.sendMessage(new ChatMessage("advMode.notAllowed"), SystemUtils.b);
         } else {
             CommandBlockListenerAbstract commandblocklistenerabstract = packetplayinsetcommandminecart.a(this.player.world);
diff --git a/src/main/java/net/minecraft/server/PlayerInteractManager.java b/src/main/java/net/minecraft/server/PlayerInteractManager.java
index dec20939ae312f24f13f02c4a275f45974467cb0..300fad4b4a2950e7e613f0ef97ac9e8740c09243 100644
--- a/src/main/java/net/minecraft/server/PlayerInteractManager.java
+++ b/src/main/java/net/minecraft/server/PlayerInteractManager.java
@@ -353,7 +353,7 @@ public class PlayerInteractManager {
             TileEntity tileentity = this.world.getTileEntity(blockposition);
             Block block = iblockdata.getBlock();
 
-            if ((block instanceof BlockCommand || block instanceof BlockStructure || block instanceof BlockJigsaw) && !this.player.isCreativeAndOp()) {
+            if ((block instanceof BlockCommand || block instanceof BlockStructure || block instanceof BlockJigsaw) && !this.player.isCreativeAndOp() && !(block instanceof BlockCommand && (this.player.isCreative() && this.player.getBukkitEntity().hasPermission("minecraft.commandblock")))) { // Paper - command block permission
                 this.world.notify(blockposition, iblockdata, iblockdata, 3);
                 return false;
             } else if (this.player.a((World) this.world, blockposition, this.gamemode)) {
diff --git a/src/main/java/org/bukkit/craftbukkit/util/permissions/CraftDefaultPermissions.java b/src/main/java/org/bukkit/craftbukkit/util/permissions/CraftDefaultPermissions.java
index 525ebf961e5da0687183a5e2ead23ed92cbd9d79..a4a809f302c5ff9c76cde5fc0add2ceec1bdf9b5 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/permissions/CraftDefaultPermissions.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/permissions/CraftDefaultPermissions.java
@@ -16,6 +16,7 @@ public final class CraftDefaultPermissions {
         DefaultPermissions.registerPermission(ROOT + ".nbt.copy", "Gives the user the ability to copy NBT in creative", org.bukkit.permissions.PermissionDefault.TRUE, parent);
         DefaultPermissions.registerPermission(ROOT + ".debugstick", "Gives the user the ability to use the debug stick in creative", org.bukkit.permissions.PermissionDefault.OP, parent);
         DefaultPermissions.registerPermission(ROOT + ".debugstick.always", "Gives the user the ability to use the debug stick in all game modes", org.bukkit.permissions.PermissionDefault.FALSE, parent);
+        DefaultPermissions.registerPermission(ROOT + ".commandblock", "Gives the user the ability to use command blocks.", org.bukkit.permissions.PermissionDefault.OP, parent); // Paper
         // Spigot end
         parent.recalculatePermissibles();
     }