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/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index 312768054e02847bbc7d2ec7fa6198dad52b86d2..32a6b4d8e6c8f9c05cc7ca811c2188aa554f9e3e 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -396,7 +396,7 @@ public class ServerPlayerGameMode {
             BlockEntity tileentity = this.level.getBlockEntity(pos);
             Block block = iblockdata.getBlock();
 
-            if (block instanceof GameMasterBlock && !this.player.canUseGameMasterBlocks()) {
+            if (block instanceof GameMasterBlock && !this.player.canUseGameMasterBlocks() && !(block instanceof net.minecraft.world.level.block.CommandBlock && (this.player.isCreative() && this.player.getBukkitEntity().hasPermission("minecraft.commandblock")))) { // Paper - command block permission
                 this.level.sendBlockUpdated(pos, iblockdata, iblockdata, 3);
                 return false;
             } else if (this.player.blockActionRestricted(this.level, pos, this.gameModeForPlayer)) {
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index b3fa92cc2ff977107f310a8d95c0d63aa446295e..30d0c22d4576f0aef49bb9fb08ff3c9a8edf8d5a 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -829,7 +829,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
         PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
         if (!this.server.isCommandBlockEnabled()) {
             this.player.sendSystemMessage(Component.translatable("advMode.notEnabled"));
-        } else if (!this.player.canUseGameMasterBlocks()) {
+        } else if (!this.player.canUseGameMasterBlocks() && (!this.player.isCreative() || !this.player.getBukkitEntity().hasPermission("minecraft.commandblock"))) { // Paper - command block permission
             this.player.sendSystemMessage(Component.translatable("advMode.notAllowed"));
         } else {
             BaseCommandBlock commandblocklistenerabstract = null;
@@ -896,7 +896,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
         PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
         if (!this.server.isCommandBlockEnabled()) {
             this.player.sendSystemMessage(Component.translatable("advMode.notEnabled"));
-        } else if (!this.player.canUseGameMasterBlocks()) {
+        } else if (!this.player.canUseGameMasterBlocks() && (!this.player.isCreative() || !this.player.getBukkitEntity().hasPermission("minecraft.commandblock"))) { // Paper - command block permission
             this.player.sendSystemMessage(Component.translatable("advMode.notAllowed"));
         } else {
             BaseCommandBlock commandblocklistenerabstract = packet.getCommandBlock(this.player.level);
diff --git a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
index da504702bc9423774b35dff792d2dbe7fc270fe3..c0195f73cd2c8721e882c681eaead65471710081 100644
--- a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
+++ b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
@@ -198,7 +198,7 @@ public abstract class BaseCommandBlock implements CommandSource {
     }
 
     public InteractionResult usedBy(Player player) {
-        if (!player.canUseGameMasterBlocks()) {
+        if (!player.canUseGameMasterBlocks() && (!player.isCreative() || !player.getBukkitEntity().hasPermission("minecraft.commandblock"))) { // Paper - command block permission
             return InteractionResult.PASS;
         } else {
             if (player.getCommandSenderWorld().isClientSide) {
diff --git a/src/main/java/net/minecraft/world/level/block/CommandBlock.java b/src/main/java/net/minecraft/world/level/block/CommandBlock.java
index 061a56e3828767cd6576d5a9edde5f3498e609d0..2e7c03b00bc941b86df6a7f1b2b188c9f0aede22 100644
--- a/src/main/java/net/minecraft/world/level/block/CommandBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/CommandBlock.java
@@ -130,7 +130,7 @@ public class CommandBlock extends BaseEntityBlock implements GameMasterBlock {
     public InteractionResult use(BlockState state, Level world, BlockPos pos, Player player, InteractionHand hand, BlockHitResult hit) {
         BlockEntity tileentity = world.getBlockEntity(pos);
 
-        if (tileentity instanceof CommandBlockEntity && player.canUseGameMasterBlocks()) {
+        if (tileentity instanceof CommandBlockEntity && (player.canUseGameMasterBlocks() || (player.isCreative() && player.getBukkitEntity().hasPermission("minecraft.commandblock")))) { // Paper - command block permission
             player.openCommandBlock((CommandBlockEntity) tileentity);
             return InteractionResult.sidedSuccess(world.isClientSide);
         } else {
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 70d3949616c63038ad3e9bd1069db5ea2fb3f3b8..8e06bc11fb28baee3407bbfe9d7b3689d6f85ff2 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(CraftDefaultPermissions.ROOT + ".nbt.copy", "Gives the user the ability to copy NBT in creative", org.bukkit.permissions.PermissionDefault.TRUE, parent);
         DefaultPermissions.registerPermission(CraftDefaultPermissions.ROOT + ".debugstick", "Gives the user the ability to use the debug stick in creative", org.bukkit.permissions.PermissionDefault.OP, parent);
         DefaultPermissions.registerPermission(CraftDefaultPermissions.ROOT + ".debugstick.always", "Gives the user the ability to use the debug stick in all game modes", org.bukkit.permissions.PermissionDefault.FALSE/* , parent */); // Paper - should not have this parent, as it's not a "vanilla" utility
+        DefaultPermissions.registerPermission(CraftDefaultPermissions.ROOT + ".commandblock", "Gives the user the ability to use command blocks.", org.bukkit.permissions.PermissionDefault.OP, parent); // Paper
         // Spigot end
         parent.recalculatePermissibles();
     }