public static PacketParts ParsePacket(byte[] bytes)
{ //2014.09.15.
/*if (CurrentUser.Keys[CurrentUser.KeyIndex] != null)
* bytes = Storage.Encrypt(bytes, CurrentUser.Keys[CurrentUser.KeyIndex]);
* else
* bytes = Storage.Encrypt(bytes, "ihavenokeys");*/
var ret = new PacketParts();
ret.Response = (bytes[0] == 0x01) ? true : false;
ret.UpdateType = (UpdateType)bytes[1];
int pos = 2; //2014.12.19.
//ret.KeyVersion = BitConverter.ToInt32(bytes, 1 + 1);
ret.KeyVersion = BitConverter.ToInt32(bytes, pos);
pos += sizeof(int);
ret.Port = BitConverter.ToInt32(bytes, pos); //2014.12.19.
pos += sizeof(int);
byte[] encryptedBytes = new byte[bytes.Length - pos]; //2014.12.22. - A hátralévő rész titkosított
Array.Copy(bytes, pos, encryptedBytes, 0, encryptedBytes.Length); //2014.12.22.
if (CurrentUser.Keys[CurrentUser.KeyIndex] != null)
{
bytes = Storage.Decrypt(encryptedBytes, true, CurrentUser.Keys[CurrentUser.KeyIndex]);
}
else
{
bytes = Storage.Decrypt(encryptedBytes, true, "ihavenokeys");
}
//ret.UserID = BitConverter.ToInt32(bytes, 1 + 1 + 4);
pos = 0; //2014.12.22. - Új tömb lett a visszafejtés után
ret.UserID = BitConverter.ToInt32(bytes, pos);
pos += sizeof(int);
//ret.Data = new byte[bytes.Length - 1 - 1 - 4 - 4];
ret.Data = new byte[bytes.Length - pos];
//Array.Copy(bytes, 2 + 4 + 4, ret.Data, 0, ret.Data.Length);
Array.Copy(bytes, pos, ret.Data, 0, ret.Data.Length);
return(ret);
}
/// <summary>
/// Retrieves the size of the selected packet parts.
/// </summary>
/// <seealso href="GXPacketInsertHeader">InsertHeader</seealso>
/// <seealso href="GXPacketInsertData">InsertData</seealso>
/// <seealso href="GXPacketResetHeader">ResetHeader</seealso>
/// <seealso href="GXPacketResetData">ResetData</seealso>
public int GetSize(PacketParts parts)
{
int size = 0;
if ((parts & PacketParts.Markers) != 0)
{
if (m_Bop != null)
{
size += GXConverter.GetBytes(m_Bop, false).Length;
}
if (m_Eop != null)
{
size += GXConverter.GetBytes(m_Eop, false).Length;
}
if (m_Checksum != null)
{
size += GXConverter.GetBytes(m_Checksum, false).Length;
}
}
if ((parts & PacketParts.Data) != 0)
{
size += m_Data.Count;
}
return size;
}
