private static Transaction SignWithWallet(Transaction tx, params object[] args)
{
if (tx == null)
{
throw new ArgumentNullException("tx");
}
tx.ToJson();
var wallet = new Neo.Wallets.NEP6.NEP6Wallet(new WalletIndexer("Index_0001E240"), (string)args[0]);
try
{
wallet.Unlock((string)args[1]);
}
catch (Exception)
{
Console.WriteLine("password error");
}
//Signature
var context = new ContractParametersContext(tx);
wallet.Sign(context);
if (context.Completed)
{
Console.WriteLine("Sign successful");
tx.Witnesses = context.GetWitnesses();
}
else
{
Console.WriteLine("Sign failed");
}
return(tx);
}
static bool TryGetNEP6Wallet(string path, string password, ProtocolSettings settings, [MaybeNullWhen(false)] out Wallet wallet, [MaybeNullWhen(false)] out UInt160 accountHash)
{
try
{
var nep6wallet = new Neo.Wallets.NEP6.NEP6Wallet(path, settings);
using var unlock = nep6wallet.Unlock(password);
var nep6account = nep6wallet.GetAccounts().SingleOrDefault(a => a.IsDefault)
?? nep6wallet.GetAccounts().SingleOrDefault()
?? throw new InvalidOperationException("Neo-express only supports NEP-6 wallets with a single default account or a single account");
if (nep6account.IsMultiSigContract())
{
throw new Exception("Neo-express doesn't supports multi-sig NEP-6 accounts");
}
var keyPair = nep6account.GetKey() ?? throw new Exception("account.GetKey() returned null");
wallet = new DevWallet(settings, string.Empty);
var account = wallet.CreateAccount(keyPair.PrivateKey);
accountHash = account.ScriptHash;
return(true);
}
catch
{
wallet = null;
accountHash = null;
return(false);
}
}
public void Export(string filename, string password)
{
var nep6Wallet = new Neo.Wallets.NEP6.NEP6Wallet(null, filename, Name);
nep6Wallet.Unlock(password);
foreach (var account in GetAccounts())
{
nep6Wallet.CreateAccount(account.Contract, account.GetKey());
}
nep6Wallet.Save();
}
public static void Refund()
{
var inputs = new List <CoinReference> {
new CoinReference()
{
PrevHash = new UInt256("0x44d5a5ef32c8ec780de59ca59cb799efd1bf3051d9a2c94a2b1d13af34abe7ca".Remove(0, 2).HexToBytes().Reverse().ToArray()),
PrevIndex = 0
}
}.ToArray();
var outputs = new List <TransactionOutput> {
new TransactionOutput()
{
AssetId = Blockchain.UtilityToken.Hash, //Asset Id, this is GAS
ScriptHash = ScriptHash, //CGAS 地址
Value = new Fixed8((long)(9.99 * (long)Math.Pow(10, 8)))
}
}.ToArray();
Transaction tx = null;
var applicationScript = new byte[0];
using (ScriptBuilder sb = new ScriptBuilder())
{
sb.EmitAppCall(ScriptHash, "refund", User);
sb.Emit(OpCode.THROWIFNOT);
applicationScript = sb.ToArray();
}
tx = new InvocationTransaction
{
Version = 0,
Script = applicationScript,
Outputs = outputs,
Inputs = inputs,
Attributes = new TransactionAttribute[]
{
new TransactionAttribute
{
Usage = TransactionAttributeUsage.Script,
Data = User.ToArray()//附加人的 Script Hash
}
}
};
//Open wallet
var wallet = new Neo.Wallets.NEP6.NEP6Wallet(new WalletIndexer("Index_0001E240"), "1.json");
try
{
wallet.Unlock("11111111");
}
catch (Exception)
{
Console.WriteLine("password error");
}
//Sign in wallet 生成附加人的签名
var context = new ContractParametersContext(tx);
var additionalSignature = new byte[0];
foreach (UInt160 hash in context.ScriptHashes)
{
if (hash == User)
{
WalletAccount account = wallet.GetAccount(hash);
if (account?.HasKey != true)
{
continue;
}
KeyPair key = account.GetKey();
additionalSignature = context.Verifiable.Sign(key);
}
}
var additionalVerificationScript = new byte[0];
using (ScriptBuilder sb = new ScriptBuilder())
{
sb.EmitPush(additionalSignature);
additionalVerificationScript = sb.ToArray();
}
var verificationScript = new byte[0];
using (ScriptBuilder sb = new ScriptBuilder())
{
sb.EmitPush(2);
sb.EmitPush("1");
verificationScript = sb.ToArray();
}
var witness = new Witness
{
InvocationScript = verificationScript,
VerificationScript = Blockchain.Singleton.Store.GetContracts().TryGet(ScriptHash).Script
};
var additionalWitness = new Witness
{
InvocationScript = additionalVerificationScript,
VerificationScript = UserScript
};
var witnesses = new Witness[2] {
witness, additionalWitness
};
tx.Witnesses = witnesses.ToList().OrderBy(p => p.ScriptHash).ToArray();
Verify(tx);
}
