/*
* This form is intended to be the primary form used by students
* Upon launching the program the administrator login page opens requiring an
* admin or lab assistant to load the program fully
* Upon launching this form is locked into fullscreen to prevent student tampering
* with the computer
* Alt-Tab will be disabled in future versions, Ctrl-Alt-Del and Alt-F4 require interfering
* with System processes to disable and as such are being left to later users to determine
* if the risk is neccessary
*/
public StudentLogin()
{
InitializeComponent();
this.AutoScaleMode = AutoScaleMode.Dpi;
this.WindowState = FormWindowState.Normal;
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
this.Bounds = Screen.PrimaryScreen.Bounds;
if (FirstTimeLoad())
{
using (var myform = new FirstLoadPassword())
{
do
{
myform.ShowDialog();
}while (myform.DialogResult != DialogResult.OK);
}
}
using (var myform = new AdminLogin()) //calls the admin login page on program startup
{
do
{
myform.ShowDialog();
}while (myform.DialogResult != DialogResult.OK);
}
OpenFill(); //call the fill method for the student login list box
ResetDir(); //resets the current directory to the base directory
}
private void Logout_Click(object sender, EventArgs e) //Opens the student logout form for the lab assistants
{ //to do single user logouts
if (currentLogins.Count > 0)
{
using (var adminform = new AdminLogin())
{
adminform.ShowDialog();
if (adminform.DialogResult == DialogResult.OK)
{
using (var myform = new Logout(currentLogins)) //passes the current login list to the logout form
{
var result = myform.ShowDialog(); //Declared as var because we expect an update when this closes
if (result == DialogResult.OK)
{
currentLogins = myform.currentStudents; //receives an updated list from the logout form
}
OpenFill(); //repopulates the student login list
}
}
}
}
else
{
MessageBox.Show("No students currently logged in.");
}
}
/*
* Function to remove an account from the dbo.Admins. This function calls the AdminLogin form as
* additional authorization. It is also unable to remove the base Administrator account as it should
* not be an available option in the listbox.
*/
private void removeButton_Click(object sender, EventArgs e)
{
try
{
if (removeListBox.SelectedIndex != -1)
{
using (var myform = new AdminLogin()) //calling the AdminLogin form for additional security
{
myform.ShowDialog();
if (myform.DialogResult == DialogResult.OK && (myform.authok == "Admin" || myform.authok == "Administrator"))
{
Valid admin = new Valid();
if (admin.RemoveAdmin(removeListBox.SelectedItem.ToString()))
{
MessageBox.Show("Selected admin removed.");
ListFill(true);
ListFill(false);
}
}
}
}
}
catch
{
}
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e) //Exits the program with Admin approval
{
using (Form myform = new AdminLogin())
{
var result = myform.ShowDialog();
if (result == DialogResult.OK)
{
clearLoginsToolStripMenuItem.PerformClick();
this.Close();
}
}
}
/*
* The following region is composed of entries for the menu buttons to open other forms
* Generally, all of these menu strip options first open the AdminLogin form to validate
* the user
* Some of the options specifically require a higher admin level than the Lab Assistant
* these options are denoted by a decision statement that checks the authok value returned
* by the AdminLogin form, this value denotes the admin type each login is assigned in the Admin DB
*
*/
#region MenuStripItems
private void AddStudent_Click(object sender, EventArgs e) //Opens the add student form
{
using (Form myform = new AdminLogin()) //Opens the admin login form to control adding to DB
{
var result = myform.ShowDialog();
if (result == DialogResult.OK) //This generic dialog check looks for a successful
{ //admin login of any type
Form userform = new CreateUser();
userform.ShowDialog();
OpenFill(); //repopulates the list after a student is added
}
}
}
/*
* Function for creating new admin accounts. Validates that all required fields have been filled on
* button press and calls the appropriate Valid class function to insert
*/
private void createButton_Click(object sender, EventArgs e)
{
if (createNameBox.Text != string.Empty)
{
if (createPassBox.Text != string.Empty && createConfirmBox.Text == createPassBox.Text)
{
string type;
if (labRadioButton.Checked) //if statement to determine the account type being created
{
type = "LabAssist";
}
else
{
type = "Admin";
}
using (var myform = new AdminLogin()) //calls the AdminLogin form as an additional authorization
{
myform.ShowDialog();
if (myform.DialogResult == DialogResult.OK && (myform.authok == "Admin" || myform.authok == "Administrator"))
{
Valid Admin = new Valid();
if (Admin.InsertAdmin(createNameBox.Text, createPassBox.Text, type))
{
MessageBox.Show("New user created.");
}
ListFill(true);
ListFill(false);
}
}
}
else
{
MessageBox.Show("Password confirmation invalid.");
ClearThings();
createNameBox.Focus();
}
}
else
{
MessageBox.Show("Please enter a name for this user.");
ClearThings();
createNameBox.Focus();
}
}
private void AdminTasks_Click(object sender, EventArgs e) //Opens Administrator form
{
using (var myform = new AdminLogin())
{
var result = myform.ShowDialog();
//The following check uses the above mentioned method for determining if an admin
//or a lab assistant is attempting to open the admin form as only admins should
//be allowed access
//The form is declared as a form instead of a var because we expect no return values
if (result == DialogResult.OK && (myform.authok == "Admin" || myform.authok == "Administrator"))
{
Form adminform = new AdminTasks();
adminform.ShowDialog();
OpenFill(); //repopulates the student list as admins can remove students
}
else
{
MessageBox.Show("Incorrect username/password.");
}
}
}
private void clearLoginsToolStripMenuItem_Click(object sender, EventArgs e) //allows labassist/admins to log everyone out at end of day
{
if (currentLogins.Count != 0)
{
using (Form myform = new AdminLogin())
{
myform.ShowDialog();
if (myform.DialogResult == DialogResult.OK)
{
for (int i = 0; i < currentLogins.Count; i++)
{
string logDir = Path.Combine(Environment.CurrentDirectory, "Logs");
DateTime dt = DateTime.Now;
string date = dt.ToShortDateString();
string time = dt.ToShortTimeString();
string[] newdate = (dt.Date.ToString()).Split();
string[] dateparts = newdate[0].Split('/');
date = dateparts[0] + "-" + dateparts[1] + "-" + dateparts[2];
if (!Directory.Exists(logDir))
{
Directory.CreateDirectory(logDir);
}
string logpath = date + ".txt";
using (StreamWriter outputfile = new StreamWriter("Logs\\" + logpath, true))
{
string[] name = currentLogins[i].Split(',');
outputfile.WriteLine(Utility.Encrypt(name[1].Trim() + "," + name[0].Trim() + ",," + date + ",Force out: ," + time, false));
outputfile.Close();
}
}
currentLogins.Clear();
MessageBox.Show("All users logged out.");
OpenFill();
}
}
}
}