public string Connect(string ip, int port, string usr, string pwd)
{
var ips = IPAddress.Parse(ip);
var Endpoint = new IPEndPoint(ips, port);
//tcpClient = new TcpClient(Endpoint);
tcpClient.Connect(Endpoint);
//tcpClient.Connect(ip, port);
usrname = usr;
password = pwd;
stream = tcpClient.GetStream();
Writer = new StreamWriter(stream);
Reader = new StreamReader(stream);
AdvancedStream.SendMessage(ref Writer, $"L2KDB:Basic:OpenSession|{usr}|{pwd}");
string content = AdvancedStream.ReadToCurrentEnd(ref Reader);
var Responses = content.Split(',');
if (Responses[0] == "L2KDB:Basic:ConnectionAccept")
{
sessionID = Responses[1];
aes = new CustomedAES();
aesKey = Responses[2];
aesIV = Responses[3];
aes.Key = aesKey;
aes.IV = aesIV;
isConnected = true;
return("[S]");
}
else
{
return("[F]" + Responses[0]);
}
}
private static DatabaseDescription OpenDescription(string location, CryptographyCredential credential)
{
DatabaseDescription description = new DatabaseDescription();
if (credential == null)
{
var c = File.ReadAllText(location);
var l = c.Split(':');
description.isPublic = bool.Parse(l[1]);
}
else if (credential.Key == "")
{
var c = File.ReadAllText(location);
var l = c.Split(':');
description.isPublic = bool.Parse(l[1]);
}
else
{
var c = File.ReadAllText(location);
CustomedAES aes = new CustomedAES();
aes.Key = credential.Key;
aes.IV = credential.IV;
var l = (aes.Decrypt(c)).Split(':');
description.isPublic = bool.Parse(l[1]);
}
return(new DatabaseDescription());
}
private static void SaveDescription(DatabaseDescription description, string location, CryptographyCredential credential)
{
if (credential == null)
{
File.WriteAllText(location, "PUBLIC:" + description.isPublic);
}
else if (credential.Key == "")
{
File.WriteAllText(location, "PUBLIC:" + description.isPublic);
}
else
{
CustomedAES aes = new CustomedAES();
aes.Key = credential.Key;
aes.IV = credential.IV;
File.WriteAllText(location, aes.Encrypt("PUBLIC:" + description.isPublic));
}
}
static void Main(string[] args)
{
TcpClient client = new TcpClient();
client.Connect("127.0.0.1", 9341);
var s = client.GetStream();
StreamWriter streamWriter = new StreamWriter(s);
{
AdvancedStream.SendMessage(ref streamWriter, "L2KDB:Basic:OpenSession|Creeper Lv|123456\r\nL2KDB:Basic:EndOfCurrentTransmission");
//streamWriter.Flush();
}
String SessionID = "";
String Key = "";
String IV = "";
CustomedAES aes = new CustomedAES();
StreamReader streamReader = new StreamReader(s);
{
string receive; receive = AdvancedStream.ReadToCurrentEnd(ref streamReader);
Console.WriteLine(receive);
var blocks = receive.Split(':');
if (blocks[2].StartsWith("ConnectionAccept"))
{
var c = blocks[2].Split(',');
SessionID = c[1];
Key = c[2];
IV = c[3];
aes.Key = Key;
aes.IV = IV;
Console.WriteLine($"Obtain:{SessionID}\t{Key}\t{IV}");
{
AdvancedStream.SendMessage(ref streamWriter, "L2KDB:Basic:GetDatabaseVersion|" + SessionID, aes);
Console.WriteLine(AdvancedStream.ReadToCurrentEnd(ref streamReader, aes));
}
{
AdvancedStream.SendMessage(ref streamWriter, "L2KDB:Basic:OpenDatabase,TestDataBase,,|" + SessionID, aes);
Console.WriteLine(AdvancedStream.ReadToCurrentEnd(ref streamReader, aes));
}
}
else
{
}
}
//Console.WriteLine("Hello World!");
}
public static string ReadToCurrentEnd(ref StreamReader streamReader, CustomedAES aes, bool isHeaderRequired = true)
{
string content = "";
string tmp;
while (true)
{
try
{
tmp = aes.Decrypt(streamReader.ReadLine());
if (tmp == "")
{
break;
}
if (tmp == "L2KDB:Basic:EndOfCurrentTransmission")
{
break;
}
if (content == "")
{
content += tmp;
}
else
{
content += Environment.NewLine + tmp;
}
if (content.StartsWith("L2KDB:"))
{
}
else if (isHeaderRequired == true)
{
return("WRONG HEADER");
}
}
catch (Exception)
{
break;
}
}
return(content);
}
public static void SendMessage(ref StreamWriter streamWriter, string title, string content, CustomedAES aes)
{
string TitAes = aes.Encrypt(title);
string res = aes.Encrypt(content);
streamWriter.WriteLine(TitAes + streamWriter.NewLine + res + streamWriter.NewLine + aes.Encrypt("L2KDB:Basic:EndOfCurrentTransmission"));
//Console.WriteLine(TitAes + streamWriter.NewLine+res + streamWriter.NewLine + aes.Encrypt("L2KDB:Basic:EndOfCurrentTransmission"));
streamWriter.Flush();
}
