public IActionResult InvokeFunction(InvokeFunctionParameter param)
{
UInt160 script_hash = UInt160.Parse(param.ScriptHash);
string operation = param.Operation;
ContractParameter[] args = param.Params?.Select(p => ContractParameter.FromJson(p.ToJson()))?.ToArray() ?? new ContractParameter[0];
byte[] script;
using (ScriptBuilder sb = new ScriptBuilder())
{
script = sb.EmitAppCall(script_hash, operation, args).ToArray();
}
return(FormatJson(GetInvokeResult(script)));
}
private byte[] LoadUpdateScript(UInt160 scriptHash, string nefFilePath, string manifestFilePath, JObject data, out NefFile nef, out ContractManifest manifest)
{
if (string.IsNullOrEmpty(manifestFilePath))
{
manifestFilePath = Path.ChangeExtension(nefFilePath, ".manifest.json");
}
// Read manifest
var info = new FileInfo(manifestFilePath);
if (!info.Exists || info.Length >= Transaction.MaxTransactionSize)
{
throw new ArgumentException(nameof(manifestFilePath));
}
manifest = ContractManifest.Parse(File.ReadAllBytes(manifestFilePath));
// Read nef
info = new FileInfo(nefFilePath);
if (!info.Exists || info.Length >= Transaction.MaxTransactionSize)
{
throw new ArgumentException(nameof(nefFilePath));
}
using (var stream = new BinaryReader(File.OpenRead(nefFilePath), Utility.StrictUTF8, false))
{
nef = stream.ReadSerializable <NefFile>();
}
ContractParameter dataParameter = null;
if (data is not null)
{
try
{
dataParameter = ContractParameter.FromJson(data);
}
catch
{
throw new FormatException("invalid data");
}
}
// Basic script checks
Script script = new Script(nef.Script);
for (var i = 0; i < script.Length;)
{
// Check bad opcodes
Instruction inst = script.GetInstruction(i);
if (inst is null || !Enum.IsDefined(typeof(OpCode), inst.OpCode))
{
throw new FormatException($"OpCode not found at {i}-{((byte)inst.OpCode).ToString("x2")}");
}
i += inst.Size;
}
// Build script
using (ScriptBuilder sb = new ScriptBuilder())
{
if (dataParameter is null)
{
sb.EmitDynamicCall(scriptHash, "update", nef.ToArray(), manifest.ToJson().ToString());
}
else
{
sb.EmitDynamicCall(scriptHash, "update", nef.ToArray(), manifest.ToJson().ToString(), dataParameter);
}
return(sb.ToArray());
}
}
private JObject InvokeFunction(JArray _params)
{
UInt160 script_hash = UInt160.Parse(_params[0].AsString());
string operation = _params[1].AsString();
ContractParameter[] args = _params.Count >= 3 ? ((JArray)_params[2]).Select(p => ContractParameter.FromJson(p)).ToArray() : new ContractParameter[0];
Cosigners cosigners = _params.Count >= 4 ? new Cosigners(((JArray)_params[3]).Select(u => new Cosigner()
{
Account = UInt160.Parse(u["account"].AsString()), Scopes = (WitnessScope)Enum.Parse(typeof(WitnessScope), u["scopes"].AsString())
}).ToArray()) : null;
byte[] script;
using (ScriptBuilder sb = new ScriptBuilder())
{
script = sb.EmitAppCall(script_hash, operation, args).ToArray();
}
return(GetInvokeResult(script, cosigners));
}