public Transaction Decode(Rlp.DecoderContext context, RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
var transactionSequence = context.PeekNextItem();
int transactionLength = context.ReadSequenceLength();
int lastCheck = context.Position + transactionLength;
Transaction transaction = new Transaction();
transaction.Nonce = context.DecodeUInt256();
transaction.GasPrice = context.DecodeUInt256();
transaction.GasLimit = context.DecodeUInt256();
transaction.To = context.DecodeAddress();
transaction.Value = context.DecodeUInt256();
if (transaction.To == null)
{
transaction.Init = context.DecodeByteArray();
}
else
{
transaction.Data = context.DecodeByteArray();
}
if (context.Position < lastCheck)
{
byte[] vBytes = context.DecodeByteArray();
byte[] rBytes = context.DecodeByteArray();
byte[] sBytes = context.DecodeByteArray();
if (vBytes[0] == 0 || rBytes[0] == 0 || sBytes[0] == 0)
{
throw new RlpException("VRS starting with 0");
}
if (rBytes.Length > 32 || sBytes.Length > 32)
{
throw new RlpException("R and S lengths expected to be less or equal 32");
}
int v = vBytes.ToInt32();
BigInteger r = rBytes.ToUnsignedBigInteger();
BigInteger s = sBytes.ToUnsignedBigInteger();
if (s.IsZero && r.IsZero)
{
throw new RlpException("Both 'r' and 's' are zero when decoding a transaction.");
}
Signature signature = new Signature(r, s, v);
transaction.Signature = signature;
transaction.Hash = Keccak.Compute(transactionSequence);
}
if (!rlpBehaviors.HasFlag(RlpBehaviors.AllowExtraData))
{
context.Check(lastCheck);
}
return(transaction);
}
public NetworkNode Decode(Rlp.DecoderContext context, RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
context.ReadSequenceLength();
var publicKey = new Hex(context.DecodeByteArray());
var ip = System.Text.Encoding.UTF8.GetString(context.DecodeByteArray());
var port = context.DecodeByteArray().ToInt32();
var description = System.Text.Encoding.UTF8.GetString(context.DecodeByteArray());
var reputation = context.DecodeByteArray().ToInt64();
var networkNode = new NetworkNode(publicKey, ip != string.Empty ? ip : null, port, description != string.Empty ? description : null, reputation);
return(networkNode);
}
public TransactionReceipt Decode(Rlp.DecoderContext context, RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
TransactionReceipt receipt = new TransactionReceipt();
context.ReadSequenceLength();
byte[] firstItem = context.DecodeByteArray();
if (firstItem.Length == 1)
{
receipt.StatusCode = firstItem[0];
}
else
{
receipt.PostTransactionState = firstItem.Length == 0 ? null : new Keccak(firstItem);
}
receipt.GasUsed = (long)context.DecodeUBigInt(); // TODO: review
receipt.Bloom = context.DecodeBloom();
int lastCheck = context.ReadSequenceLength() + context.Position;
List <LogEntry> logEntries = new List <LogEntry>();
while (context.Position < lastCheck)
{
logEntries.Add(Rlp.Decode <LogEntry>(context, RlpBehaviors.AllowExtraData));
}
if (!rlpBehaviors.HasFlag(RlpBehaviors.AllowExtraData))
{
context.Check(lastCheck);
}
receipt.Logs = logEntries.ToArray();
return(receipt);
}
public BlockHeader Decode(Rlp.DecoderContext context, RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
if (context.Length == 1 && context.Data[0] == 192)
{
return(null);
}
var headerRlp = context.PeekNextItem();
int headerSequenceLength = context.ReadSequenceLength();
int headerCheck = context.Position + headerSequenceLength;
Keccak parentHash = context.DecodeKeccak();
Keccak ommersHash = context.DecodeKeccak();
Address beneficiary = context.DecodeAddress();
Keccak stateRoot = context.DecodeKeccak();
Keccak transactionsRoot = context.DecodeKeccak();
Keccak receiptsRoot = context.DecodeKeccak();
Bloom bloom = context.DecodeBloom();
UInt256 difficulty = context.DecodeUInt256();
UInt256 number = context.DecodeUInt256();
UInt256 gasLimit = context.DecodeUInt256();
UInt256 gasUsed = context.DecodeUInt256();
UInt256 timestamp = context.DecodeUInt256();
byte[] extraData = context.DecodeByteArray();
Keccak mixHash = context.DecodeKeccak();
BigInteger nonce = context.DecodeUBigInt();
if (!rlpBehaviors.HasFlag(RlpBehaviors.AllowExtraData))
{
context.Check(headerCheck);
}
BlockHeader blockHeader = new BlockHeader(
parentHash,
ommersHash,
beneficiary,
difficulty,
number,
(long)gasLimit,
timestamp,
extraData);
blockHeader.StateRoot = stateRoot;
blockHeader.TransactionsRoot = transactionsRoot;
blockHeader.ReceiptsRoot = receiptsRoot;
blockHeader.Bloom = bloom;
blockHeader.GasUsed = (long)gasUsed;
blockHeader.MixHash = mixHash;
blockHeader.Nonce = (ulong)nonce;
blockHeader.Hash = Keccak.Compute(headerRlp);
return(blockHeader);
}
public LogEntry Decode(Rlp.DecoderContext context, RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
context.ReadSequenceLength();
Address address = context.DecodeAddress();
long sequenceLength = context.ReadSequenceLength();
Keccak[] topics = new Keccak[sequenceLength / 33];
for (int i = 0; i < topics.Length; i++)
{
topics[i] = context.DecodeKeccak();
}
byte[] data = context.DecodeByteArray();
return(new LogEntry(address, data, topics));
}
public TxReceipt Decode(Rlp.DecoderContext context, RlpBehaviors rlpBehaviors = RlpBehaviors.None)
{
bool isStorage = (rlpBehaviors & RlpBehaviors.Storage) != 0;
TxReceipt txReceipt = new TxReceipt();
context.ReadSequenceLength();
byte[] firstItem = context.DecodeByteArray();
if (firstItem.Length == 1)
{
txReceipt.StatusCode = firstItem[0];
}
else
{
txReceipt.PostTransactionState = firstItem.Length == 0 ? null : new Keccak(firstItem);
}
if (isStorage)
{
txReceipt.BlockHash = context.DecodeKeccak();
}
if (isStorage)
{
txReceipt.BlockNumber = (long)context.DecodeUInt256();
}
if (isStorage)
{
txReceipt.Index = context.DecodeInt();
}
if (isStorage)
{
txReceipt.Sender = context.DecodeAddress();
}
if (isStorage)
{
txReceipt.Recipient = context.DecodeAddress();
}
if (isStorage)
{
txReceipt.ContractAddress = context.DecodeAddress();
}
if (isStorage)
{
txReceipt.GasUsed = (long)context.DecodeUBigInt();
}
txReceipt.GasUsedTotal = (long)context.DecodeUBigInt();
txReceipt.Bloom = context.DecodeBloom();
int lastCheck = context.ReadSequenceLength() + context.Position;
List <LogEntry> logEntries = new List <LogEntry>();
while (context.Position < lastCheck)
{
logEntries.Add(Rlp.Decode <LogEntry>(context, RlpBehaviors.AllowExtraData));
}
bool allowExtraData = (rlpBehaviors & RlpBehaviors.AllowExtraData) != 0;
if (!allowExtraData)
{
context.Check(lastCheck);
}
// since error was added later we can only rely on it in cases where we read receipt only and no data follows
if (isStorage && !allowExtraData && context.Position != context.Length)
{
txReceipt.Error = context.DecodeString();
}
txReceipt.Logs = logEntries.ToArray();
return(txReceipt);
}