override public void Parse()
{
MemoryStream ms = new MemoryStream(payload);
NetworkByteReader nbr = new NetworkByteReader(ms);
nbr.ReadByte();
cookie = nbr.ReadBytes(16);
kex_algorithms = nbr.ReadNameList();
server_host_key_algorithms = nbr.ReadNameList();
encryption_algorithms_client_to_server = nbr.ReadNameList();
encryption_algorithms_server_to_client = nbr.ReadNameList();
mac_algorithms_client_to_server = nbr.ReadNameList();
mac_algorithms_server_to_client = nbr.ReadNameList();
compression_algorithms_client_to_server = nbr.ReadNameList();
compression_algorithms_server_to_client = nbr.ReadNameList();
languages_client_to_server = nbr.ReadNameList();
languages_server_to_client = nbr.ReadNameList();
first_kex_packet_follows = nbr.ReadBoolean();
reserved = nbr.ReadUInt32();
}
public Packet RecvPacket(ICryptoTransform decryptor)
{
if (decryptor == null)
{
Packet packet = new Packet();
uint packet_length = reader.ReadUInt32();
byte padding_length = reader.ReadByte();
byte[] payload = reader.ReadBytes(packet_length - padding_length - 1);
byte[] padding = reader.ReadBytes(padding_length);
packet.SetPayload(payload);
return packet;
}
else
{
int blocksize = Math.Max(decryptor.InputBlockSize, 8);
MemoryStream ms_packet = new MemoryStream();
NetworkByteWriter writer_packet = new NetworkByteWriter(ms_packet);
byte[] buffer = new byte[blocksize];
bool first = true;
int more = 0;
while (true)
{
// read a block
int ret = reader.ReadBytes(buffer, 0, blocksize);
// must be a real block size;
if (ret != blocksize) return null;
decryptor.TransformBlock(buffer, 0, buffer.Length, buffer, 0);
writer_packet.WriteBytes(buffer);
if (first) // it's first time, need parse packet_length and padding_length
{
NetworkByteReader reader_buffer = new NetworkByteReader(new MemoryStream(buffer));
uint packet_length_t = reader_buffer.ReadUInt32();
first = false;
more = (int)packet_length_t + 4 - blocksize;
if (more % blocksize != 0) return null;
}
else
{
more -= blocksize;
}
if (more <= 0) break;
}
byte[] mac = reader.ReadBytes(20);
ms_packet.Seek(0, SeekOrigin.Begin);
NetworkByteReader reader_packet = new NetworkByteReader(ms_packet);
Packet packet = new Packet();
uint packet_length = reader_packet.ReadUInt32();
byte padding_length = reader_packet.ReadByte();
byte[] payload = reader_packet.ReadBytes(packet_length - padding_length - 1);
byte[] padding = reader_packet.ReadBytes(padding_length);
packet.SetPayload(payload);
return packet;
}
}
public override void Parse()
{
MemoryStream ms = new MemoryStream(payload);
NetworkByteReader nbr = new NetworkByteReader(ms);
nbr.ReadByte();
cookie = nbr.ReadBytes(16);
kex_algorithms = nbr.ReadNameList();
server_host_key_algorithms = nbr.ReadNameList();
encryption_algorithms_client_to_server = nbr.ReadNameList();
encryption_algorithms_server_to_client = nbr.ReadNameList();
mac_algorithms_client_to_server = nbr.ReadNameList();
mac_algorithms_server_to_client = nbr.ReadNameList();
compression_algorithms_client_to_server = nbr.ReadNameList();
compression_algorithms_server_to_client = nbr.ReadNameList();
languages_client_to_server = nbr.ReadNameList();
languages_server_to_client = nbr.ReadNameList();
first_kex_packet_follows = nbr.ReadBoolean();
reserved = nbr.ReadUInt32();
}
public Packet RecvPacket(ICryptoTransform decryptor)
{
if (decryptor == null)
{
Packet packet = new Packet();
uint packet_length = reader.ReadUInt32();
byte padding_length = reader.ReadByte();
byte[] payload = reader.ReadBytes(packet_length - padding_length - 1);
byte[] padding = reader.ReadBytes(padding_length);
packet.SetPayload(payload);
return(packet);
}
else
{
int blocksize = Math.Max(decryptor.InputBlockSize, 8);
MemoryStream ms_packet = new MemoryStream();
NetworkByteWriter writer_packet = new NetworkByteWriter(ms_packet);
byte[] buffer = new byte[blocksize];
bool first = true;
int more = 0;
while (true)
{
// read a block
int ret = reader.ReadBytes(buffer, 0, blocksize);
// must be a real block size;
if (ret != blocksize)
{
return(null);
}
decryptor.TransformBlock(buffer, 0, buffer.Length, buffer, 0);
writer_packet.WriteBytes(buffer);
if (first) // it's first time, need parse packet_length and padding_length
{
NetworkByteReader reader_buffer = new NetworkByteReader(new MemoryStream(buffer));
uint packet_length_t = reader_buffer.ReadUInt32();
first = false;
more = (int)packet_length_t + 4 - blocksize;
if (more % blocksize != 0)
{
return(null);
}
}
else
{
more -= blocksize;
}
if (more <= 0)
{
break;
}
}
byte[] mac = reader.ReadBytes(20);
ms_packet.Seek(0, SeekOrigin.Begin);
NetworkByteReader reader_packet = new NetworkByteReader(ms_packet);
Packet packet = new Packet();
uint packet_length = reader_packet.ReadUInt32();
byte padding_length = reader_packet.ReadByte();
byte[] payload = reader_packet.ReadBytes(packet_length - padding_length - 1);
byte[] padding = reader_packet.ReadBytes(padding_length);
packet.SetPayload(payload);
return(packet);
}
}
