PaperMC/paper-server/nms-patches/net/minecraft/world/level/block/BlockCampfire.patch

--- a/net/minecraft/world/level/block/BlockCampfire.java
+++ b/net/minecraft/world/level/block/BlockCampfire.java
@@ -47,6 +47,10 @@
 import net.minecraft.world.phys.shapes.VoxelShapeCollision;
 import net.minecraft.world.phys.shapes.VoxelShapes;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.block.CraftBlock;
+// CraftBukkit end
+
 public class BlockCampfire extends BlockTileEntity implements IBlockWaterlogged {
 
     protected static final VoxelShape SHAPE = Block.box(0.0D, 0.0D, 0.0D, 16.0D, 7.0D, 16.0D);
@@ -91,7 +95,9 @@
     @Override
     public void entityInside(IBlockData iblockdata, World world, BlockPosition blockposition, Entity entity) {
         if (!entity.fireImmune() && (Boolean) iblockdata.getValue(BlockCampfire.LIT) && entity instanceof EntityLiving && !EnchantmentManager.hasFrostWalker((EntityLiving) entity)) {
+            org.bukkit.craftbukkit.event.CraftEventFactory.blockDamage = CraftBlock.at(world, blockposition); // CraftBukkit
             entity.hurt(DamageSource.IN_FIRE, (float) this.fireDamage);
+            org.bukkit.craftbukkit.event.CraftEventFactory.blockDamage = null; // CraftBukkit
         }
 
         super.entityInside(iblockdata, world, blockposition, entity);
@@ -201,6 +207,11 @@
         BlockPosition blockposition = movingobjectpositionblock.getBlockPos();
 
         if (!world.isClientSide && iprojectile.isOnFire() && iprojectile.mayInteract(world, blockposition) && !(Boolean) iblockdata.getValue(BlockCampfire.LIT) && !(Boolean) iblockdata.getValue(BlockCampfire.WATERLOGGED)) {
+            // CraftBukkit start
+            if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockIgniteEvent(world, blockposition, iprojectile).isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
             world.setBlock(blockposition, (IBlockData) iblockdata.setValue(BlockProperties.LIT, true), 11);
         }