static bool GetAES(ref byte[] data, BlindSocket socket, out Cryptography.AES256 aes256)
{
aes256 = null;
uint encryptDate = BitConverter.ToUInt32(data, 4);
byte[] realData = new byte[data.Length - 8];
Array.Copy(data, 8, realData, 0, realData.Length);
data = realData;
Console.WriteLine("Encrypted date : " + encryptDate);
socket.CryptoSend(BitConverter.GetBytes(encryptDate), PacketType.Info);
byte[] key = socket.CryptoReceiveMsg();
if (key == null)
{
MessageBox.Show("파일 복호화에 실패했습니다.", "파일 열기");
return(false);
}
Console.WriteLine("Received key {0} bytes", key.Length);
byte[] iv = socket.CryptoReceiveMsg();
if (iv == null)
{
MessageBox.Show("파일 복호화에 실패했습니다.", "파일 열기");
return(false);
}
Console.WriteLine("Received iv {0} bytes", iv.Length);
aes256 = new Cryptography.AES256(key, iv);
return(true);
}
public void Run()
{
connection = new MySqlConnection("Server = " + BlindNetConst.DatabaseIP + "; Port = 3306; Database = document_center; Uid = root; Pwd = kit2020");
mainSocket = new BlindServerScoket(BlindNetConst.ServerIP, BlindNetConst.OPENNERPORT);
mainSocket.BindListen();
while (true)
{
BlindSocket client = mainSocket.AcceptWithECDH();
IPEndPoint iep = (IPEndPoint)(client.socket.RemoteEndPoint);
Console.WriteLine("Accepted {0} : {1}", iep.Address, iep.Port);
if (client == null)
{
continue;
}
byte[] data = BlindNetUtil.ByteTrimEndNull(client.CryptoReceiveMsg());
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
string ext = GetExt(BitConverter.ToUInt32(tmp, 0));
if (ext == null)
{
client.CryptoSend(null, PacketType.Disconnect);
continue;
}
client.CryptoSend(Encoding.UTF8.GetBytes(ext), PacketType.Info);
data = BlindNetUtil.ByteTrimEndNull(client.CryptoReceiveMsg());
tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
int encryptDate = BitConverter.ToInt32(tmp, 0);
byte[] key, iv;
if (!GetSpecifyKeyPair(out key, out iv, encryptDate))
{
client.CryptoSend(null, PacketType.Disconnect);
continue;
}
client.CryptoSend(key, PacketType.Info);
client.CryptoSend(iv, PacketType.Info);
byte[] latestKey, latestIv;
if (!GetLatestKeyPair(out latestKey, out latestIv))
{
client.CryptoSend(null, PacketType.Disconnect);
continue;
}
client.CryptoSend(latestKey, PacketType.Info);
client.CryptoSend(latestIv, PacketType.Info);
client.Close();
}
}
public void Run()
{
this.hDB = new MySqlConnection("Server=" + BlindNetConst.DatabaseIP + ";Database=BlindChat;Uid=root;Pwd=kit2020;");
this.hDB.Open();
recvSock = GetChatRecvSocket();
sendSock = GetChatSendSocket();
IPEndPoint iep = (IPEndPoint)(recvSock.socket.RemoteEndPoint);
logger = new Logger(UserID, iep.Address.ToString(), LogService.Chat);
SetOnline((int)UserStat.Online);
byte[] data;
while (true)
{
data = recvSock.CryptoReceiveMsg();
if (data == null)
{
recvSock.Close();
sendSock.Close();
SetOnline((int)UserStat.Offline);
global.ListBlindChat.Remove(this);
logger.Log(LogRank.INFO, "BlindChat Disconnected");
return;
}
ChatPacket chatPacket = BlindNetUtil.ByteToStruct <ChatPacket>(data);
if (chatPacket.Type == ChatType.Time)
{
ClientUpdateData(chatPacket);
logger.Log(LogRank.INFO, "Chat Data Synchronized");
}
else if (chatPacket.Type == ChatType.NewRoom)
{
ExecuteNewRoom(chatPacket);
logger.Log(LogRank.INFO, "Created New Chat Room");
}
else if (chatPacket.Type == ChatType.Message)
{
MessageToParticipants(chatPacket);
}
else if (chatPacket.Type == ChatType.RoomJoined)
{
ExecuteInvitation(chatPacket);
}
else if (chatPacket.Type == ChatType.Exit)
{
ExecuteExit(chatPacket);
}
}
}
static bool GetLatestAES(BlindSocket socket, out Cryptography.AES256 aes256)
{
aes256 = null;
byte[] key = socket.CryptoReceiveMsg();
if (key == null)
{
MessageBox.Show("파일 복호화에 실패했습니다.", "파일 열기");
return(false);
}
Console.WriteLine("Received key {0} bytes", key.Length);
byte[] iv = socket.CryptoReceiveMsg();
if (iv == null)
{
MessageBox.Show("파일 복호화에 실패했습니다.", "파일 열기");
return(false);
}
Console.WriteLine("Received iv {0} bytes", iv.Length);
aes256 = new Cryptography.AES256(key, iv);
return(true);
}
static string GetSpecifyExt(uint id, BlindSocket socket)
{
socket.CryptoSend(BitConverter.GetBytes(id), PacketType.Info);
byte[] bExt = socket.CryptoReceiveMsg();
if (bExt == null)
{
MessageBox.Show("파일 복호화에 실패했습니다.", "파일 열기");
return(null);
}
string ext = "." + Encoding.UTF8.GetString(bExt);
Console.WriteLine("Ext : " + ext);
return(ext);
}
static async void AddConnectedUser(BlindSocket socket)
{
if (socket == null)
{
return;
}
IPEndPoint iep = (IPEndPoint)(socket.socket.RemoteEndPoint);
//로그인 인증
uint cid;
byte[] ClientReceiveMsg = socket.CryptoReceiveMsg(); // 아이디,isinner 받음. (bool형. 디버그했을때 실질적인 값 : true -> "True" | false -> "False")
string ClientGenderMsg = Encoding.UTF8.GetString(ClientReceiveMsg); // 바이트 -> 스트링
if (Encoding.UTF8.GetString(ClientReceiveMsg) != "\0")
{
cid = GetClientID(ClientGenderMsg.Split(',')[0].ToString()); //[0] -> dkdlel
}
else
{
cid = 0;
}
logger = new Logger(cid, iep.Address.ToString(), LogService.Login);
if (cid != 0)
{
logger.Log(LogRank.INFO, "[Login Success] " + "Login ID : \"" + ClientGenderMsg.Split(',')[0].ToString() + "\" " +
"VPN Whether: \"" + (ClientGenderMsg.Split(',')[1].ToString() == "True" ? "True" : "False") + "\"");
}
else
{
logger.Log(LogRank.WARN, "[Login Fail] " + "Login ID : \"" + ClientGenderMsg.Split(',')[0].ToString() + "\" " +
"VPN Whether: \"" + (ClientGenderMsg.Split(',')[1].ToString() == "True" ? "True" : "False") + "\"");
}
socket.CryptoSend(BitConverter.GetBytes(cid), PacketType.Response);//cid 보냄
if (cid == 0)
{
socket.Close();
return;
}
uint[] gids = GetGids(cid);
Console.WriteLine("Accepted {0} : {1}" + $"({cid})", iep.Address, iep.Port);
//Client 구조체 초기화 및 추가
TaskScheduler scheduler = TaskScheduler.Default;
BlindClient client = new BlindClient();
client.socket = socket;
client.token = new CancellationTokenSource();
client.documentCenter = new Doc_Center(cid, gids); //기능 객체 생성
client.tDocumentCenter = Task.Factory.StartNew(() => client.documentCenter.Run(), client.token.Token, TaskCreationOptions.LongRunning, scheduler); //기능 객체의 최초 함수 실행
client.chat = new BlindChat(cid);
client.tChat = Task.Factory.StartNew(() => client.chat.Run(), client.token.Token, TaskCreationOptions.LongRunning, scheduler);
client.blindLock = new BlindLock(cid);
client.tBlindLock = Task.Factory.StartNew(() => client.blindLock.Run(), client.token.Token, TaskCreationOptions.LongRunning, scheduler);
client.blindWebDevice = new BlindWebDevice(cid);
client.tBlindWebDevice = Task.Factory.StartNew(() => client.blindWebDevice.Run(), client.token.Token, TaskCreationOptions.LongRunning, scheduler);
Clients.Add(client);
}
private void btn_Unlock_Click(object sender, EventArgs e)
{
if (!isInner)//vpn으로 연결되어 있는 경우
{
MessageBox.Show("VPN용 락");
//서버로 정보 전송
LockInfo info = new LockInfo();
info.userName = UserID;
info.password = tb_Password.Text;
byte[] data = BlindNetUtil.StructToByte(info);
LockPacket packet = new LockPacket();
packet.Type = lockType.INFO;
packet.data = data;
MessageBox.Show("패킷 생성");
byte[] packetData = BlindNetUtil.StructToByte(packet);
lockSock.CryptoSend(packetData, PacketType.Info);
MessageBox.Show("send msg");
//서버로부터 받은 성공여부로 스크린락 해제
data = lockSock.CryptoReceiveMsg();
MessageBox.Show("received msg");
packet = BlindNetUtil.ByteToStruct <LockPacket>(data);
if (packet.Type == lockType.SUCCESS)
{
tb_Password.Text = "";
ActivateWhenUnlock();
}
else
{
MessageBox.Show("서버로부터의 인증에 실패하셨습니다.");
tb_Password.Text = "";
tb_Password.Focus();
return;
}
}
else//로컬에서 인증하는 경우
{
int token;
bool result;
if (tb_Password.Text == "unlock")
{
result = true;
}
else
{
result = LogonUser(Environment.UserName, "Blind2A", tb_Password.Text, 8, 0, out token);
}
if (result)
{
tb_Password.Text = "";
ActivateWhenUnlock();
}
else
{
MessageBox.Show("로컬에서 인증을 실패하셨습니다.");
return;
}
}
}
public void Run()
{
socket = _Main.socket_docCenter.AcceptWithECDH();
socket.socket.NoDelay = true;
logger = new Logger(uid, ((IPEndPoint)(socket.socket.RemoteEndPoint)).Address.ToString(), LogService.DocumentCenter);
logger.Log(LogRank.INFO, "Connected to document center.");
isInner = BitConverter.ToBoolean(socket.CryptoReceiveMsg(), 0);
connection = new MySqlConnection("Server = " + BlindNetConst.DatabaseIP + "; Port = 3306; Database = document_center; Uid = root; Pwd = kit2020");
try
{
connection.Open();
}
catch (Exception ex)
{
Console.WriteLine("ERROR : [UID : " + uid + "] " + ex.Message);
socket.CryptoSend(null, PacketType.Fail);
return;
}
socket.CryptoSend(null, PacketType.OK);
while (true)
{
//try
//{
BlindPacket packet = socket.CryptoReceive();
if (packet.header != PacketType.Disconnect)
{
packet.data = BlindNetUtil.ByteTrimEndNull(packet.data);
}
switch (packet.header)
{
case PacketType.DocRefresh:
UpdateRoot();
break;
case PacketType.DocDirInfo:
{
byte[] data = BlindNetUtil.ByteTrimEndNull(packet.data);
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
UpdateDir(BitConverter.ToUInt32(tmp, 0));
break;
}
case PacketType.DocAddDir:
AddDir(BlindNetUtil.ByteToStruct <Directory_Info>(packet.data));
break;
case PacketType.DocRemoveDir:
{
byte[] data = BlindNetUtil.ByteTrimEndNull(packet.data);
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
RemoveDir(BitConverter.ToUInt32(tmp, 0));
break;
}
case PacketType.DocRemoveFile:
{
byte[] data = BlindNetUtil.ByteTrimEndNull(packet.data);
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
RemoveFile(BitConverter.ToUInt32(tmp, 0));
break;
}
case PacketType.DocChngNameDir:
ChangeNameDir(BlindNetUtil.ByteToStruct <Directory_Info>(packet.data));
break;
case PacketType.DocFileUpload:
FileUpload(BlindNetUtil.ByteToStruct <Directory_Info>(packet.data));
break;
case PacketType.DocFileDownload:
{
byte[] data = BlindNetUtil.ByteTrimEndNull(packet.data);
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
FileDownload(BitConverter.ToUInt32(tmp, 0));
break;
}
case PacketType.DocDirDownload:
{
byte[] data = BlindNetUtil.ByteTrimEndNull(packet.data);
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
DirDownload(BitConverter.ToUInt32(tmp, 0));
break;
}
case PacketType.DocGetFileSize:
{
byte[] data = BlindNetUtil.ByteTrimEndNull(packet.data);
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
GetFileSize(BitConverter.ToUInt32(tmp, 0));
break;
}
case PacketType.DocGetDirSize:
{
byte[] data = BlindNetUtil.ByteTrimEndNull(packet.data);
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
GetDirSize(BitConverter.ToUInt32(tmp, 0));
break;
}
case PacketType.DocRenameFile:
{
byte[] data = BlindNetUtil.ByteTrimEndNull(packet.data);
byte[] tmp = new byte[4];
Array.Copy(data, 0, tmp, 0, data.Length);
RenameFile(BitConverter.ToUInt32(tmp, 0));
break;
}
case PacketType.DocMoveFile:
MoveFile(BlindNetUtil.ByteToStruct <SrcDstInfo>(packet.data));
break;
case PacketType.DocMoveDir:
MoveDir(BlindNetUtil.ByteToStruct <SrcDstInfo>(packet.data));
break;
case PacketType.DocCopyFile:
CopyFile(BlindNetUtil.ByteToStruct <SrcDstInfo>(packet.data));
break;
case PacketType.DocCopyDir:
CopyDir(BlindNetUtil.ByteToStruct <SrcDstInfo>(packet.data));
break;
case PacketType.Disconnect:
logger.Log(LogRank.INFO, "Disconnected from document center");
return;
}
//}
//catch (Exception ex)
//{
// Console.WriteLine("ERROR : [UID : " + uid + "] " + ex.Message);
// return;
//}
}
}
private void FileUpload(Directory_Info dir)
{
File_Info file = BlindNetUtil.ByteToStruct <File_Info>(socket.CryptoReceiveMsg());
Debug.WriteLine("Start FileUpload \"{0}\"", file.name);
MySqlCommand commander = null;
try
{
string command = "SELECT path FROM files_info WHERE dir_id = " + dir.id + " AND name = '" + file.name + "';";
MySqlDataAdapter adapter = new MySqlDataAdapter(command, connection);
DataSet dataset = new DataSet();
adapter.Fill(dataset);
string path = null;
if (dataset.Tables[0].Rows.Count != 0)
{
command = "UPDATE files_info SET modified_date = NOW() WHERE dir_id = " + dir.id + " AND name = '" + file.name + "';";
commander = new MySqlCommand(command, connection);
if (commander.ExecuteNonQuery() != 1)
{
throw new Exception();
}
path = (string)dataset.Tables[0].Rows[0]["path"];
File.Delete(path);
}
else
{
command = "INSERT INTO files_info VALUES (" + 0 + ", " + dir.id + ", '" + file.name + "', DEFAULT, UPPER('" + file.type + "'), " +
file.size + ", NULL);";
commander = new MySqlCommand(command, connection);
if (commander.ExecuteNonQuery() != 1)
{
throw new Exception();
}
}
Debug.WriteLine("[FileUpload] Start leceiving");
byte[] data = socket.CryptoReceiveMsg();
Debug.WriteLine("[FileUpload] End leceiving {0} bytes", data.Length);
command = "SELECT MAX(id) FROM files_info;";
commander = new MySqlCommand(command, connection);
MySqlDataReader reader = commander.ExecuteReader();
reader.Read();
file.id = (uint)reader["MAX(id)"];
reader.Close();
if (path == null)
{
command = "SELECT path FROM directorys_info WHERE id = " + dir.id + ";";
adapter = new MySqlDataAdapter(command, connection);
adapter.Fill(dataset);
if (dataset.Tables[0].Rows.Count != 1)
{
throw new Exception();
}
path = (string)dataset.Tables[0].Rows[0]["path"] + file.id + ".blind";
command = "UPDATE files_info SET path = '" + RemakePath(path, false) + "' WHERE dir_id = " + dir.id + " AND name = '" + file.name + "';";
commander = new MySqlCommand(command, connection);
if (commander.ExecuteNonQuery() != 1)
{
throw new Exception();
}
}
data = EncryptFile(data);
if (data == null)
{
throw new Exception();
}
data = BlindNetUtil.MergeArray(BitConverter.GetBytes(file.id), data);
FileInfo fi = new FileInfo(path);
FileStream fs = fi.OpenWrite();
fs.Write(data, 0, data.Length);
fs.Close();
UpdateModDate(dir.id);
socket.CryptoSend(null, PacketType.OK);
logger.Log(LogRank.INFO, "Uploaded file(" + file.id + ")");
}
catch (Exception ex)
{
socket.CryptoSend(null, PacketType.Fail);
}
}