Read only methods #1049
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| namespace Neo.SmartContract | ||
| { | ||
| public class ExecutionContextState | ||
| { | ||
| /// <summary> | ||
| /// Script hash | ||
| /// </summary> | ||
| public UInt160 ScriptHash { get; set; } | ||
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|
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| /// <summary> | ||
| /// Is read only | ||
| /// </summary> | ||
| public bool ReadOnly { get; set; } = false; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change | ||||
|---|---|---|---|---|---|---|
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@@ -55,8 +55,8 @@ public static partial class InteropService | |||||
| public static readonly uint System_Block_GetTransaction = Register("System.Block.GetTransaction", Block_GetTransaction, 0_00000400, TriggerType.Application); | ||||||
| public static readonly uint System_Transaction_GetHash = Register("System.Transaction.GetHash", Transaction_GetHash, 0_00000400, TriggerType.All); | ||||||
| public static readonly uint System_Contract_Call = Register("System.Contract.Call", Contract_Call, 0_01000000, TriggerType.System | TriggerType.Application); | ||||||
| public static readonly uint System_Contract_Destroy = Register("System.Contract.Destroy", Contract_Destroy, 0_01000000, TriggerType.Application, true); | ||||||
| public static readonly uint System_Storage_GetContext = Register("System.Storage.GetContext", Storage_GetContext, 0_00000400, TriggerType.Application, true); | ||||||
| public static readonly uint System_Storage_GetReadOnlyContext = Register("System.Storage.GetReadOnlyContext", Storage_GetReadOnlyContext, 0_00000400, TriggerType.Application); | ||||||
| public static readonly uint System_Storage_Get = Register("System.Storage.Get", Storage_Get, 0_01000000, TriggerType.Application); | ||||||
| public static readonly uint System_Storage_Put = Register("System.Storage.Put", Storage_Put, GetStoragePrice, TriggerType.Application); | ||||||
|
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@@ -88,19 +88,21 @@ internal static bool Invoke(ApplicationEngine engine, uint method) | |||||
| return false; | ||||||
| if (!descriptor.AllowedTriggers.HasFlag(engine.Trigger)) | ||||||
| return false; | ||||||
| if (descriptor.RequireWriteAccess && engine.CurrentContext.GetState<ExecutionContextState>().ReadOnly) | ||||||
| return false; | ||||||
| return descriptor.Handler(engine); | ||||||
| } | ||||||
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||||||
| private static uint Register(string method, Func<ApplicationEngine, bool> handler, long price, TriggerType allowedTriggers, bool requireWriteAccess = false) | ||||||
| { | ||||||
| InteropDescriptor descriptor = new InteropDescriptor(method, handler, price, allowedTriggers, requireWriteAccess); | ||||||
| methods.Add(descriptor.Hash, descriptor); | ||||||
| return descriptor.Hash; | ||||||
| } | ||||||
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||||||
| private static uint Register(string method, Func<ApplicationEngine, bool> handler, Func<RandomAccessStack<StackItem>, long> priceCalculator, TriggerType allowedTriggers, bool requireWriteAccess = false) | ||||||
| { | ||||||
| InteropDescriptor descriptor = new InteropDescriptor(method, handler, priceCalculator, allowedTriggers, requireWriteAccess); | ||||||
| methods.Add(descriptor.Hash, descriptor); | ||||||
| return descriptor.Hash; | ||||||
| } | ||||||
|
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@@ -537,9 +539,10 @@ private static bool Contract_Call(ApplicationEngine engine) | |||||
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||||||
| StackItem method = engine.CurrentContext.EvaluationStack.Pop(); | ||||||
| StackItem args = engine.CurrentContext.EvaluationStack.Pop(); | ||||||
| string methodStr = method.GetString(); | ||||||
| ContractManifest currentManifest = engine.Snapshot.Contracts.TryGet(engine.CurrentScriptHash)?.Manifest; | ||||||
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||||||
| if (currentManifest != null && !currentManifest.CanCall(contract.Manifest, methodStr)) | ||||||
|
There was a problem hiding this comment. @neo-project/core @erikzhang current Manifest could be null? i think that it is a MUST
Suggested change
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| return false; | ||||||
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||||||
| if (engine.InvocationCounter.TryGetValue(contract.ScriptHash, out var counter)) | ||||||
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@@ -552,6 +555,9 @@ private static bool Contract_Call(ApplicationEngine engine) | |||||
| } | ||||||
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||||||
| ExecutionContext context_new = engine.LoadScript(contract.Script, 1); | ||||||
| context_new.GetState<ExecutionContextState>().ReadOnly = currentManifest != null && | ||||||
| (currentManifest.ReadOnlyMethods.IsWildcard || currentManifest.ReadOnlyMethods.Contains(methodStr)); | ||||||
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||||||
| context_new.EvaluationStack.Push(args); | ||||||
| context_new.EvaluationStack.Push(method); | ||||||
| return true; | ||||||
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@igormcoelho I increased the scope not only for the storages, for destroy, update, and create too