Add Hardfork for StrictMode (#2881)

* init

* rename

Author: Ashuaidehao

src/Neo/Hardfork.cs

@@ -12,6 +12,7 @@ namespace Neo
 {
     public enum Hardfork : byte
     {
-        HF_Aspidochelone
+        HF_Aspidochelone,
+        HF_Basilisk
     }
 }

src/Neo/SmartContract/ApplicationEngine.cs

@@ -610,7 +610,7 @@ public void SetState<T>(T state)
             states[typeof(T)] = state;
         }
 
-        private bool IsHardforkEnabled(Hardfork hardfork)
+        public bool IsHardforkEnabled(Hardfork hardfork)
         {
             if (PersistingBlock is null)
                 return true;

src/Neo/SmartContract/Native/ContractManagement.cs

@@ -231,7 +231,7 @@ private async ContractTask<ContractState> Deploy(ApplicationEngine engine, byte[
 
             NefFile nef = nefFile.AsSerializable<NefFile>();
             ContractManifest parsedManifest = ContractManifest.Parse(manifest);
-            Helper.Check(new VM.Script(nef.Script, true), parsedManifest.Abi);
+            Helper.Check(new VM.Script(nef.Script, engine.IsHardforkEnabled(Hardfork.HF_Basilisk)), parsedManifest.Abi);
             UInt160 hash = Helper.GetContractHash(tx.Sender, nef.CheckSum, parsedManifest.Name);
 
             if (Policy.IsBlocked(engine.Snapshot, hash))
@@ -295,7 +295,7 @@ private ContractTask Update(ApplicationEngine engine, byte[] nefFile, byte[] man
                     throw new InvalidOperationException($"Invalid Manifest Hash: {contract.Hash}");
                 contract.Manifest = manifest_new;
             }
-            Helper.Check(new VM.Script(contract.Nef.Script, true), contract.Manifest.Abi);
+            Helper.Check(new VM.Script(contract.Nef.Script, engine.IsHardforkEnabled(Hardfork.HF_Basilisk)), contract.Manifest.Abi);
             contract.UpdateCounter++; // Increase update counter
             return OnDeploy(engine, contract, data, true);
         }