Ro'yxatga olish sanasi 22 Yanvar 2025
8 SotishHujjat almashinuvi jarayonlarini tezkorlashtirish va xavfsizligini ta`minlash uchun bulutli tizim
![produc.Show();
this.Hide();
guna2TextBox2.Text = guna2TextBox1.Text = "";
}
else
{
MessageBox.Show("Agar siz Admin bo`lsangiz Foydalanuvchi
nomi va parolni to`g`ri kiriting", " ", MessageBoxButtons.OK,
MessageBoxIcon.Warning);
}
}
else
{
try
{
SqlCommand cmd = connection.CreateCommand();
cmd.CommandType = CommandType.Text;
connection.Open();
cmd.CommandText = $"select * from xodim where
username='{guna2TextBox1.Text}' and password='{guna2TextBox2.Text}'";
DataTable top = new DataTable();
top.Load(cmd.ExecuteReader());
connection.Close();
MessageBox.Show(top.Rows.Count + "..");
if (top.Rows.Count > 0)
{
this.Hide();
new mainForm(top.Rows[0][1].ToString()).Show();
guna2TextBox2.Text = guna2TextBox1.Text = "";
}
else
{
MessageBox.Show("Noto`g`ri foydalanuvchi nomi yoki parol",
" Noto`g`ri malumot", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
connection.Close();
28](https://docx.uz/documents/705469f5-f0a7-49e3-b9b4-1d3af2a8ab55/page_28.png?v=1)
![serverRunning = true;
listener = new TcpListener (IPAddress.Parse(IP), 11000);
listener.Start();
serverThread = new Thread (new ThreadStart(serverTasks));
serverThread.Start();
while (!serverThread.IsAlive);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
void serverTasks ()
{
try
{
while (true)
{
if(fileReceived == 1)
{
if (MessageBox.Show("File saqlansinmi?", "Fayl qabul qilindi",
MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
{
File.Delete(savePath);
fileReceived = 0;
SqlCommand cmd = connection.CreateCommand();
cmd.CommandType = CommandType.Text;
FileStream fs = new FileStream(fileNameLabel.Text,
FileMode.Open, FileAccess.Read);
Byte[] meh = new Byte[fs.Length];
fs.Read(meh, 0, meh.Length);
fs.Close();
string date = DateTime.Now.ToString("MM/dd/yyyy HH:mm");
cmd.CommandText = $"insert into admin_malumot(Kimdan,
Kimga, Qachon, fayl,farmat ) values ('{senderMachineName}',
'{onlinePCList.SelectedItems[1]}', '{date}', @fayl,
'{fileNameLabel.Text.Substring(fileNameLabel.Text.LastIndexOf('.'))}')";
SqlParameter p1 = new SqlParameter("@fayl",
SqlDbType.VarBinary, meh.Length, ParameterDirection.Input, false, 0, 0, null,
DataRowVersion.Current, meh);
cmd.Parameters.Add(p1);
connection.Open();
31](https://docx.uz/documents/705469f5-f0a7-49e3-b9b4-1d3af2a8ab55/page_31.png?v=1)
![cmd.ExecuteNonQuery();
connection.Close();
}
else
{
fileReceived = 0;
}
}
client = listener.AcceptTcpClient();
Invoke((MethodInvoker)delegate
{
notificationPanel.Visible = true;
notificationTempLabel.Text = "File kelmoqda..."+"\
n"+fileName+"\n"+"Jonatuvchi IPsi: " + senderIP + " " + senderMachineName;
});
isConnected = true;
NetworkStream stream = client.GetStream();
if (flag == 1 && isConnected)
{
savePath = savePathLabel.Text + "\\" + fileName;
using (var output = File.Create(savePath))
{
var buffer = new byte[1024];
int bytesRead;
while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) > 0)
{
output.Write(buffer, 0, bytesRead);
}
flag = 0;
client.Close();
isConnected = false;
fileName = "";
Invoke((MethodInvoker)delegate
{
notificationTempLabel.Text = "";
notificationPanel.Visible = false;
});
fileReceived = 1;
}
}
else if (flag == 0 && isConnected)
{
Byte[] bytes = new Byte[256];
32](https://docx.uz/documents/705469f5-f0a7-49e3-b9b4-1d3af2a8ab55/page_32.png?v=1)
![String data = null;
int i;
while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
{
data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
}
string[] msg = data.Split('@');
fileName = msg[0];
senderIP = msg[1];
senderMachineName = msg[2];
client.Close();
isConnected = false;
flag = 1;
}
}
}
catch (Exception)
{
flag = 0;
isConnected = false;
if (client != null)
client.Close();
}
}
private void startButton_Click(object sender, EventArgs e)
{
onlinePCList.Items.Clear();
notificationLabel.ForeColor = Color.Green;
notificationLabel.Text = "Finding...";
searchPC();
try
{
findPC = new Thread(new ThreadStart(searchPC));
findPC.Start();
while (!findPC.IsAlive) ;
}
catch (Exception e1)
{
MessageBox.Show(e1.Message);
}
}
void searchPC()
{
bool isNetworkUp = NetworkInterface.GetIsNetworkAvailable();
33](https://docx.uz/documents/705469f5-f0a7-49e3-b9b4-1d3af2a8ab55/page_33.png?v=1)
![if (isNetworkUp)
{
var host = Dns.GetHostEntry(Dns.GetHostName());
foreach (var ip in host.AddressList)
{
if (ip.AddressFamily == AddressFamily.InterNetwork)
{
this.IP = ip.ToString();
}
}
Invoke((MethodInvoker)delegate
{
infoLabel.Text = "Bu kompyuter: " + this.IP;
});
string[] ipRange = IP.Split('.');
for (int i = 100; i < 255; i++)
{
Ping ping = new Ping();
string testIP = ipRange[0] + '.' + ipRange[1] + '.' + ipRange[2] + '.'
+ i.ToString();
if (testIP != this.IP)
{
ping.PingCompleted += new
PingCompletedEventHandler(pingCompletedEvent);
ping.SendAsync(testIP, 100, testIP);
}
}
Invoke((MethodInvoker)delegate
{
notificationLabel.ForeColor = Color.Green;
notificationLabel.Text = "Online holatdasiz";
});
if (!serverRunning)
startServer();
}
else
{
Invoke((MethodInvoker)delegate
{
notificationLabel.ForeColor = Color.Red;
notificationLabel.Text = "Offline holatdasiz";
});
MessageBox.Show("Lan ga ulaning iltimos!!!");
34](https://docx.uz/documents/705469f5-f0a7-49e3-b9b4-1d3af2a8ab55/page_34.png?v=1)
![{
targetIP = onlinePCList.SelectedItems[0].Text;
targetName = onlinePCList.SelectedItems[0].SubItems[1].Text;
try
{
Ping p = new Ping();
PingReply r;
r = p.Send(targetIP);
if (!(r.Status == IPStatus.Success))
{
MessageBox.Show("Bu kompyuter mavjud emas!", "",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
notification = new Thread(new ThreadStart(showNotification));
notification.Start();
listener.Stop();
serverThread.Abort();
serverThread.Join();
serverRunning = false;
socketForClient = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
socketForClient.Connect(new
IPEndPoint(IPAddress.Parse(targetIP), 11000));
string fileName = fileNameLabel.Tag.ToString();
long fileSize = new FileInfo(fileNameLabel.Text).Length;
byte[] fileNameData = Encoding.Default.GetBytes(fileName + "@"
+ this.IP + "@" + Environment.MachineName);
socketForClient.Send(fileNameData);
socketForClient.Shutdown(SocketShutdown.Both);
socketForClient.Close();
socketForClient = new Socket(AddressFamily.InterNetwork,
SocketType.Stream, ProtocolType.Tcp);
socketForClient.Connect(new
IPEndPoint(IPAddress.Parse(targetIP), 11000));
socketForClient.SendFile(fileNameLabel.Text);
socketForClient.Shutdown(SocketShutdown.Both);
socketForClient.Close();
notification.Abort();
notification.Join();
notificationTempLabel.Text = "";
36](https://docx.uz/documents/705469f5-f0a7-49e3-b9b4-1d3af2a8ab55/page_36.png?v=1)
![notificationPanel.Visible = false;
Invoke((MethodInvoker)delegate
{
f2.Dispose();
});
MessageBox.Show("Muvaffaqiyatli qoshildi!!");
MessageBox.Show("File jonatildi " + targetIP + " " + targetName,
"Tasdiqlash", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
if (socketForClient != null)
{
socketForClient.Shutdown(SocketShutdown.Both);
socketForClient.Close();
}
}
finally
{
for (int i = 0; i < onlinePCList.SelectedIndices.Count; i++)
{
onlinePCList.Items[this.onlinePCList.SelectedIndices[i]].Selected
= false;
}
startServer();
}
}
else
{
MessageBox.Show("Maydonlarni va yuborilayotgan kompyuterni
tanlang");
}
}
void showNotification()
{
f2 = new NotificationForm(targetName,targetIP);
f2.ShowDialog();
}
private void mainForm_FormClosing(object sender, FormClosingEventArgs
e)
37](https://docx.uz/documents/705469f5-f0a7-49e3-b9b4-1d3af2a8ab55/page_37.png?v=1)
Hujjat almashinuvi jarayonlarini tezkorlashtirish va xavfsizligini ta`minlash uchun bulutli tizim