private void HandleNotification(Snapshot snapshot, Transaction transaction, UInt160 scriptHash,
VM.Types.Array stateItems,
Dictionary <Nep5BalanceKey, Nep5Balance> nep5BalancesChanged, ref ushort transferIndex)
{
if (stateItems.Count == 0)
{
return;
}
// Event name should be encoded as a byte array.
if (!(stateItems[0] is VM.Types.ByteArray))
{
return;
}
var eventName = Encoding.UTF8.GetString(stateItems[0].GetByteArray());
if (eventName != "Transfer")
{
return;
}
if (stateItems.Count < 4)
{
return;
}
if (!(stateItems[1] is null) && !(stateItems[1] is VM.Types.ByteArray))
{
return;
}
if (!(stateItems[2] is null) && !(stateItems[2] is VM.Types.ByteArray))
{
return;
}
var amountItem = stateItems[3];
if (!(amountItem is VM.Types.ByteArray || amountItem is VM.Types.Integer))
{
return;
}
byte[] fromBytes = stateItems[1]?.GetByteArray();
if (fromBytes?.Length != 20)
{
fromBytes = null;
}
byte[] toBytes = stateItems[2]?.GetByteArray();
if (toBytes?.Length != 20)
{
toBytes = null;
}
if (fromBytes == null && toBytes == null)
{
return;
}
var from = new UInt160(fromBytes);
var to = new UInt160(toBytes);
if (fromBytes != null)
{
var fromKey = new Nep5BalanceKey(from, scriptHash);
if (!nep5BalancesChanged.ContainsKey(fromKey))
{
nep5BalancesChanged.Add(fromKey, new Nep5Balance());
}
}
if (toBytes != null)
{
var toKey = new Nep5BalanceKey(to, scriptHash);
if (!nep5BalancesChanged.ContainsKey(toKey))
{
nep5BalancesChanged.Add(toKey, new Nep5Balance());
}
}
RecordTransferHistory(snapshot, scriptHash, from, to, amountItem.GetBigInteger(), transaction.Hash, ref transferIndex);
}
private void HandleNotification(Snapshot snapshot, Transaction transaction, UInt160 scriptHash,
VM.Types.Array stateItems,
Dictionary <Nep5BalanceKey, Nep5Balance> nep5BalancesChanged, ref ushort transferIndex)
{
if (stateItems.Count == 0)
{
return;
}
// Event name should be encoded as a byte array.
if (!(stateItems[0] is VM.Types.ByteArray))
{
return;
}
var eventName = Encoding.UTF8.GetString(stateItems[0].GetByteArray());
if (_shouldTrackNonStandardMintTokensEvent && eventName == "mintTokens")
{
if (stateItems.Count < 4)
{
return;
}
// This is not an official standard but at least one token uses it, and so it is needed for proper
// balance tracking to support all tokens in use.
if (!(stateItems[2] is VM.Types.ByteArray))
{
return;
}
byte[] mintToBytes = stateItems[2].GetByteArray();
if (mintToBytes.Length != 20)
{
return;
}
var mintTo = new UInt160(mintToBytes);
var mintAmountItem = stateItems[3];
if (!(mintAmountItem is VM.Types.ByteArray || mintAmountItem is VM.Types.Integer))
{
return;
}
var toKey = new Nep5BalanceKey(mintTo, scriptHash);
if (!nep5BalancesChanged.ContainsKey(toKey))
{
nep5BalancesChanged.Add(toKey, new Nep5Balance());
}
RecordTransferHistory(snapshot, scriptHash, UInt160.Zero, mintTo, mintAmountItem.GetBigInteger(), transaction.Hash, ref transferIndex);
return;
}
if (eventName != "transfer")
{
return;
}
if (stateItems.Count < 4)
{
return;
}
if (!(stateItems[1] is null) && !(stateItems[1] is VM.Types.ByteArray))
{
return;
}
if (!(stateItems[2] is null) && !(stateItems[2] is VM.Types.ByteArray))
{
return;
}
var amountItem = stateItems[3];
if (!(amountItem is VM.Types.ByteArray || amountItem is VM.Types.Integer))
{
return;
}
byte[] fromBytes = stateItems[1]?.GetByteArray();
if (fromBytes?.Length != 20)
{
fromBytes = null;
}
byte[] toBytes = stateItems[2]?.GetByteArray();
if (toBytes?.Length != 20)
{
toBytes = null;
}
if (fromBytes == null && toBytes == null)
{
return;
}
var from = new UInt160(fromBytes);
var to = new UInt160(toBytes);
if (fromBytes != null)
{
var fromKey = new Nep5BalanceKey(from, scriptHash);
if (!nep5BalancesChanged.ContainsKey(fromKey))
{
nep5BalancesChanged.Add(fromKey, new Nep5Balance());
}
}
if (toBytes != null)
{
var toKey = new Nep5BalanceKey(to, scriptHash);
if (!nep5BalancesChanged.ContainsKey(toKey))
{
nep5BalancesChanged.Add(toKey, new Nep5Balance());
}
}
RecordTransferHistory(snapshot, scriptHash, from, to, amountItem.GetBigInteger(), transaction.Hash, ref transferIndex);
}
private void HandleNotification(StoreView snapshot, IVerifiable scriptContainer, UInt160 scriptHash,
VM.Types.Array stateItems,
Dictionary <Nep5BalanceKey, Nep5Balance> nep5BalancesChanged, ref ushort transferIndex)
{
if (stateItems.Count == 0)
{
return;
}
// Event name should be encoded as a byte array.
if (!(stateItems[0] is VM.Types.ByteString))
{
return;
}
var eventName = stateItems[0].GetString();
if (eventName != "Transfer")
{
return;
}
if (stateItems.Count < 4)
{
return;
}
if (!(stateItems[1].IsNull) && !(stateItems[1] is VM.Types.ByteString))
{
return;
}
if (!(stateItems[2].IsNull) && !(stateItems[2] is VM.Types.ByteString))
{
return;
}
var amountItem = stateItems[3];
if (!(amountItem is VM.Types.ByteString || amountItem is VM.Types.Integer))
{
return;
}
byte[] fromBytes = stateItems[1].IsNull ? null : stateItems[1].GetSpan().ToArray();
if (fromBytes != null && fromBytes.Length != UInt160.Length)
{
return;
}
byte[] toBytes = stateItems[2].IsNull ? null : stateItems[2].GetSpan().ToArray();
if (toBytes != null && toBytes.Length != UInt160.Length)
{
return;
}
if (fromBytes == null && toBytes == null)
{
return;
}
var from = UInt160.Zero;
var to = UInt160.Zero;
if (fromBytes != null)
{
from = new UInt160(fromBytes);
var fromKey = new Nep5BalanceKey(from, scriptHash);
if (!nep5BalancesChanged.ContainsKey(fromKey))
{
nep5BalancesChanged.Add(fromKey, new Nep5Balance());
}
}
if (toBytes != null)
{
to = new UInt160(toBytes);
var toKey = new Nep5BalanceKey(to, scriptHash);
if (!nep5BalancesChanged.ContainsKey(toKey))
{
nep5BalancesChanged.Add(toKey, new Nep5Balance());
}
}
if (scriptContainer is Transaction transaction)
{
RecordTransferHistory(snapshot, scriptHash, from, to, amountItem.GetBigInteger(), transaction.Hash, ref transferIndex);
}
}
private void HandleNotification(Snapshot snapshot, Transaction transaction, UInt160 scriptHash,
VM.Types.Array stateItems,
Dictionary <Nep5BalanceKey, Nep5Balance> nep5BalancesChanged, ref ushort transferIndex)
{
// Event name should be encoded as a byte array.
if (!(stateItems[0] is VM.Types.ByteArray))
{
return;
}
var eventName = Encoding.UTF8.GetString(stateItems[0].GetByteArray());
// Only care about transfers
if (eventName != "transfer")
{
return;
}
if (!(stateItems[1] is VM.Types.ByteArray))
{
return;
}
if (!(stateItems[2] is VM.Types.ByteArray))
{
return;
}
var amountItem = stateItems[3];
if (!(amountItem is VM.Types.ByteArray || amountItem is VM.Types.Integer))
{
return;
}
byte[] fromBytes = stateItems[1].GetByteArray();
if (fromBytes.Length != 20)
{
fromBytes = null;
}
byte[] toBytes = stateItems[2].GetByteArray();
if (toBytes.Length != 20)
{
toBytes = null;
}
if (fromBytes == null && toBytes == null)
{
return;
}
var from = new UInt160(fromBytes);
var to = new UInt160(toBytes);
var fromKey = new Nep5BalanceKey(from, scriptHash);
if (!nep5BalancesChanged.ContainsKey(fromKey))
{
nep5BalancesChanged.Add(fromKey, new Nep5Balance());
}
var toKey = new Nep5BalanceKey(to, scriptHash);
if (!nep5BalancesChanged.ContainsKey(toKey))
{
nep5BalancesChanged.Add(toKey, new Nep5Balance());
}
if (!_shouldTrackHistory)
{
return;
}
BigInteger amount = amountItem.GetBigInteger();
_transfersSent.Add(new Nep5TransferKey(from,
snapshot.GetHeader(snapshot.Height).Timestamp, scriptHash, transferIndex),
new Nep5Transfer
{
Amount = amount,
UserScriptHash = to,
BlockIndex = snapshot.Height,
TxHash = transaction.Hash
});
_transfersReceived.Add(new Nep5TransferKey(to,
snapshot.GetHeader(snapshot.Height).Timestamp, scriptHash, transferIndex),
new Nep5Transfer
{
Amount = amount,
UserScriptHash = from,
BlockIndex = snapshot.Height,
TxHash = transaction.Hash
});
transferIndex++;
}
