From 99b2235621ae3d04fbcfd960953f950029090696 Mon Sep 17 00:00:00 2001
From: pietru <jabartek2004.bob@gmail.com>
Date: Tue, 5 Nov 2024 19:43:43 +0100
Subject: [PATCH] protect against BlockReplacePacket

---
 .../mixins/BlockReplaceMixin.java             | 52 +++++++++++++++++++
 src/main/resources/cookie_utils.mixins.json   |  1 +
 2 files changed, 53 insertions(+)
 create mode 100644 src/main/java/net/pietru/cookie_utils/mixins/BlockReplaceMixin.java

diff --git a/src/main/java/net/pietru/cookie_utils/mixins/BlockReplaceMixin.java b/src/main/java/net/pietru/cookie_utils/mixins/BlockReplaceMixin.java
new file mode 100644
index 0000000..52c8e8d
--- /dev/null
+++ b/src/main/java/net/pietru/cookie_utils/mixins/BlockReplaceMixin.java
@@ -0,0 +1,52 @@
+package net.pietru.cookie_utils.mixins;
+
+import com.llamalad7.mixinextras.sugar.Local;
+import finalforeach.cosmicreach.accounts.Account;
+import finalforeach.cosmicreach.blocks.BlockPosition;
+import finalforeach.cosmicreach.blocks.BlockState;
+import finalforeach.cosmicreach.blocks.BlockStateMissing;
+import finalforeach.cosmicreach.networking.NetworkIdentity;
+import finalforeach.cosmicreach.networking.NetworkSide;
+import finalforeach.cosmicreach.networking.packets.MessagePacket;
+import finalforeach.cosmicreach.networking.packets.blocks.BlockReplacePacket;
+import finalforeach.cosmicreach.networking.packets.blocks.PlaceBlockPacket;
+import finalforeach.cosmicreach.networking.server.ServerSingletons;
+import finalforeach.cosmicreach.world.Zone;
+import io.netty.channel.ChannelHandlerContext;
+import net.pietru.cookie_utils.permissions.Permissions;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import static net.pietru.cookie_utils.api.Region.can_edit_block;
+import static net.pietru.cookie_utils.api.Region.is_not_reloading;
+
+@Mixin(BlockReplacePacket.class)
+public class BlockReplaceMixin {
+    @Shadow
+    Zone zone;
+    @Shadow
+    BlockPosition blockPos;
+    @Shadow
+    BlockState targetBlockState;
+
+    @Inject(method = "handle", at = @At("HEAD"), cancellable = true)
+    private void event_block_place(CallbackInfo ci, @Local NetworkIdentity identity, @Local ChannelHandlerContext ctx){
+        if (identity.getSide() != NetworkSide.CLIENT) {
+            if (targetBlockState instanceof BlockStateMissing)
+                ci.cancel();
+        }
+        if (identity.getSide() != NetworkSide.CLIENT && ci.isCancelled()) {
+            Account account = ServerSingletons.getAccount(identity);
+            if (!Permissions.has_user_special_perm(account.getUniqueId()) && !can_edit_block(blockPos,"place",account.getUniqueId())) {
+                ci.cancel();
+
+                MessagePacket packet = new MessagePacket("[Server] " + (is_not_reloading ? "Sorry, but this area is under protection." : "Sorry but you can't do this action right now. [Config Reload In Progress]"));
+                packet.playerUniqueId=account.getUniqueId();
+                packet.setupAndSend(ctx);
+            }
+        }
+    }
+}
diff --git a/src/main/resources/cookie_utils.mixins.json b/src/main/resources/cookie_utils.mixins.json
index 8193ab8..c801c50 100644
--- a/src/main/resources/cookie_utils.mixins.json
+++ b/src/main/resources/cookie_utils.mixins.json
@@ -7,6 +7,7 @@
     "BlockActionExplodeMixin",
     "BlockBreakMixin",
     "BlockPlaceMixin",
+    "BlockReplaceMixin",
     "InteractBlockMixin",
     "LoginPacketMixin",
     "MessagePacketMixin",