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replacing RLP package #97

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merged 1 commit into from
Aug 31, 2022
Merged

replacing RLP package #97

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2 changes: 1 addition & 1 deletion src/Flow.Net.Sdk.Core/Flow.Net.Sdk.Core.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@
</PropertyGroup>

<ItemGroup>
<PackageReference Include="Nethereum.RLP" Version="4.6.1" />
<PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
<PackageReference Include="Portable.BouncyCastle" Version="1.9.0" />
</ItemGroup>

Expand Down
195 changes: 170 additions & 25 deletions src/Flow.Net.Sdk.Core/Rlp.cs
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Original file line number Diff line number Diff line change
@@ -1,43 +1,43 @@
using Flow.Net.Sdk.Core.Cadence;
using Flow.Net.Sdk.Core.Models;
using Nethereum.RLP;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Flow.Net.Sdk.Core
{
public static class Rlp
public class Rlp
{
public static byte[] EncodedAccountKey(FlowAccountKey flowAccountKey)
{
var accountElements = new List<byte[]>
{
RLP.EncodeElement(flowAccountKey.PublicKey.HexToBytes()),
RLP.EncodeElement(ConvertorForRLPEncodingExtensions.ToBytesFromNumber(BitConverter.GetBytes((uint)flowAccountKey.SignatureAlgorithm))),
RLP.EncodeElement(ConvertorForRLPEncodingExtensions.ToBytesFromNumber(BitConverter.GetBytes((uint)flowAccountKey.HashAlgorithm))),
RLP.EncodeElement(ConvertorForRLPEncodingExtensions.ToBytesFromNumber(BitConverter.GetBytes(flowAccountKey.Weight)))
EncodeElement(flowAccountKey.PublicKey.HexToBytes()),
EncodeElement(ToBytesFromNumber(BitConverter.GetBytes((uint)flowAccountKey.SignatureAlgorithm))),
EncodeElement(ToBytesFromNumber(BitConverter.GetBytes((uint)flowAccountKey.HashAlgorithm))),
EncodeElement(ToBytesFromNumber(BitConverter.GetBytes(flowAccountKey.Weight)))
};

return RLP.EncodeList(accountElements.ToArray());
return EncodeList(accountElements.ToArray());
}

public static byte[] EncodedCanonicalPayload(FlowTransaction flowTransaction)
{
var payloadElements = new List<byte[]>
{
RLP.EncodeElement(flowTransaction.Script.ToBytesForRLPEncoding()),
RLP.EncodeList(flowTransaction.Arguments.Select(argument => RLP.EncodeElement(argument.Encode().ToBytesForRLPEncoding())).ToArray()),
RLP.EncodeElement(Utilities.Pad(flowTransaction.ReferenceBlockId.HexToBytes(), 32)),
RLP.EncodeElement(ConvertorForRLPEncodingExtensions.ToBytesFromNumber(BitConverter.GetBytes(flowTransaction.GasLimit))),
RLP.EncodeElement(Utilities.Pad(flowTransaction.ProposalKey.Address.Address.HexToBytes(), 8)),
RLP.EncodeElement(ConvertorForRLPEncodingExtensions.ToBytesFromNumber(BitConverter.GetBytes(flowTransaction.ProposalKey.KeyId))),
RLP.EncodeElement(ConvertorForRLPEncodingExtensions.ToBytesFromNumber(BitConverter.GetBytes(flowTransaction.ProposalKey.SequenceNumber))),
RLP.EncodeElement(Utilities.Pad(flowTransaction.Payer.Address.HexToBytes(), 8)),
RLP.EncodeList(flowTransaction.Authorizers.Select(authorizer => RLP.EncodeElement(Utilities.Pad(authorizer.Address.HexToBytes(), 8))).ToArray())
EncodeElement(Encoding.UTF8.GetBytes(flowTransaction.Script)),
EncodeList(flowTransaction.Arguments.Select(argument => EncodeElement(Encoding.UTF8.GetBytes(argument.Encode()))).ToArray()),
EncodeElement(Utilities.Pad(flowTransaction.ReferenceBlockId.HexToBytes(), 32)),
EncodeElement(ToBytesFromNumber(BitConverter.GetBytes(flowTransaction.GasLimit))),
EncodeElement(Utilities.Pad(flowTransaction.ProposalKey.Address.Address.HexToBytes(), 8)),
EncodeElement(ToBytesFromNumber(BitConverter.GetBytes(flowTransaction.ProposalKey.KeyId))),
EncodeElement(ToBytesFromNumber(BitConverter.GetBytes(flowTransaction.ProposalKey.SequenceNumber))),
EncodeElement(Utilities.Pad(flowTransaction.Payer.Address.HexToBytes(), 8)),
EncodeList(flowTransaction.Authorizers.Select(authorizer => EncodeElement(Utilities.Pad(authorizer.Address.HexToBytes(), 8))).ToArray())
};

return RLP.EncodeList(payloadElements.ToArray());
return EncodeList(payloadElements.ToArray());
}

private static byte[] EncodedSignatures(IReadOnlyList<FlowSignature> payloadSigners, FlowTransaction flowTransaction)
Expand Down Expand Up @@ -76,19 +76,19 @@ private static byte[] EncodedSignatures(IReadOnlyList<FlowSignature> payloadSign
}
}

return RLP.EncodeList(signatureElements.ToArray());
return EncodeList(signatureElements.ToArray());
}

private static byte[] EncodedSignature(FlowSignature signature, int index)
{
var signatureArray = new List<byte[]>
{
RLP.EncodeElement(index.ToBytesForRLPEncoding()),
RLP.EncodeElement(ConvertorForRLPEncodingExtensions.ToBytesFromNumber(BitConverter.GetBytes(signature.KeyId))),
RLP.EncodeElement(signature.Signature)
EncodeElement(ToBytesFromNumber(BitConverter.GetBytes(index))),
EncodeElement(ToBytesFromNumber(BitConverter.GetBytes(signature.KeyId))),
EncodeElement(signature.Signature)
};

return RLP.EncodeList(signatureArray.ToArray());
return EncodeList(signatureArray.ToArray());
}

public static byte[] EncodedCanonicalAuthorizationEnvelope(FlowTransaction flowTransaction)
Expand All @@ -99,7 +99,7 @@ public static byte[] EncodedCanonicalAuthorizationEnvelope(FlowTransaction flowT
EncodedSignatures(flowTransaction.PayloadSignatures.ToArray(), flowTransaction)
};

return RLP.EncodeList(authEnvelopeElements.ToArray());
return EncodeList(authEnvelopeElements.ToArray());
}

public static byte[] EncodedCanonicalPaymentEnvelope(FlowTransaction flowTransaction)
Expand All @@ -110,7 +110,7 @@ public static byte[] EncodedCanonicalPaymentEnvelope(FlowTransaction flowTransac
EncodedSignatures(flowTransaction.EnvelopeSignatures.ToArray(), flowTransaction)
};

return RLP.EncodeList(authEnvelopeElements.ToArray());
return EncodeList(authEnvelopeElements.ToArray());
}

public static byte[] EncodedCanonicalTransaction(FlowTransaction flowTransaction)
Expand All @@ -122,7 +122,152 @@ public static byte[] EncodedCanonicalTransaction(FlowTransaction flowTransaction
EncodedSignatures(flowTransaction.EnvelopeSignatures.ToArray(), flowTransaction)
};

return RLP.EncodeList(authEnvelopeElements.ToArray());
return EncodeList(authEnvelopeElements.ToArray());
}

private static byte[] EncodeElement(byte[] srcData)
{
if (IsNullOrZeroArray(srcData))
{
return new byte[1] { 128 };
}

if (IsSingleZero(srcData))
{
return srcData;
}

if (srcData.Length == 1 && srcData[0] < 128)
{
return srcData;
}

if (srcData.Length < 56)
{
byte b = (byte)(128 + srcData.Length);
byte[] array = new byte[srcData.Length + 1];
Array.Copy(srcData, 0, array, 1, srcData.Length);
array[0] = b;
return array;
}

int num = srcData.Length;
byte b2 = 0;
while (num != 0)
{
b2 = (byte)(b2 + 1);
num >>= 8;
}

byte[] array2 = new byte[b2];
for (int i = 0; i < b2; i++)
{
array2[b2 - 1 - i] = (byte)(srcData.Length >> 8 * i);
}

byte[] array3 = new byte[srcData.Length + 1 + b2];
Array.Copy(srcData, 0, array3, 1 + b2, srcData.Length);
array3[0] = (byte)(183 + b2);
Array.Copy(array2, 0, array3, 1, array2.Length);
return array3;
}

private static byte[] EncodeList(params byte[][] items)
{
if (items == null || (items.Length == 1 && items[0] == null))
{
return new byte[1] { 192 };
}

int num = 0;
for (int i = 0; i < items.Length; i++)
{
num += items[i].Length;
}

byte[] array;
int num2;
if (num < 56)
{
array = new byte[1 + num];
array[0] = (byte)(192 + num);
num2 = 1;
}
else
{
int num3 = num;
byte b = 0;
while (num3 != 0)
{
b = (byte)(b + 1);
num3 >>= 8;
}

num3 = num;
byte[] array2 = new byte[b];
for (int j = 0; j < b; j++)
{
array2[b - 1 - j] = (byte)(num3 >> 8 * j);
}

array = new byte[1 + array2.Length + num];
array[0] = (byte)(247 + b);
Array.Copy(array2, 0, array, 1, array2.Length);
num2 = array2.Length + 1;
}

foreach (byte[] array3 in items)
{
Array.Copy(array3, 0, array, num2, array3.Length);
num2 += array3.Length;
}

return array;
}

private static bool IsNullOrZeroArray(byte[] array)
{
if (array != null)
{
return array.Length == 0;
}

return true;
}

private static bool IsSingleZero(byte[] array)
{
if (array.Length == 1)
{
return array[0] == 0;
}

return false;
}

private static byte[] ToBytesFromNumber(byte[] bytes)
{
if (BitConverter.IsLittleEndian)
bytes = bytes.Reverse().ToArray();

return TrimZeroBytes(bytes);
}

private static byte[] TrimZeroBytes(byte[] bytes)
{
var trimmed = new List<byte>();
var previousByteWasZero = true;

for (var i = 0; i < bytes.Length; i++)
{
if (previousByteWasZero && bytes[i] == 0)
continue;

previousByteWasZero = false;
trimmed.Add(bytes[i]);
}

return trimmed.ToArray();
}
}
}