//code that runs when the button is clicked
private void button1_Click(object sender, EventArgs e)
{
//create ping object
Ping PingSender = new Ping();
PingOptions MyPingOptions = new PingOptions();
//build ping packet
MyPingOptions.DontFragment = true;
string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
byte[] buffer = Encoding.ASCII.GetBytes(data);
int timeout = 120;
//ping IP 8.8.8.8 to test internet connectivity
int p = 0;
int err = 0;
PingReply reply;
do
{
try
{
reply = PingSender.Send("8.8.8.8", timeout, buffer, MyPingOptions);
}
catch
{
Console.WriteLine("No Network Connection Available");
MessageBox.Show("No Network Connection Available");
break;
}
if (reply.Status == IPStatus.Success)
{
Console.WriteLine("Ping success");
break;
}
else
{
Console.WriteLine("Ping Failed");
err++;
}
p++;
}while (p < 4);
if (err == 4)
{
MessageBox.Show("You may not be connected to the internet. \r\n If connection fails, please double check your internet connection");
}
string username = textBoxUserName.Text;
string password = textBoxPassword.Text;
string connection = listBox1.Text;
//validate that a VPN connection is selected
if (String.IsNullOrEmpty(connection))
{
MessageBox.Show("Please Select a Connection");
return;
}
//create local variables for user information
string UserName = username;
string PlainTextPw = password;
//check for any possible password addendum from the config file and apply if necessary
if (!String.IsNullOrEmpty(passwordaddendum))
{
int pushcount = PlainTextPw.Length - passwordaddendum.Length;
try
{
PlainTextPw.Substring(pushcount, passwordaddendum.Length);
}
catch
{
MessageBox.Show("Please enter the phrase \"" + passwordaddendum + "\" after your password, or enter your 6 digit Okta Code");
return;
}
if (PlainTextPw.Substring(pushcount, passwordaddendum.Length) != passwordaddendum && !matchNumbers(PlainTextPw.Substring((PlainTextPw.Length - 6), 6)))
{
MessageBox.Show("Please enter the phrase \"" + passwordaddendum + "\" after your password, or enter your 6 digit Okta Code");
return;
}
}
//check for a user domain from config file and applies if necessary
if (!String.IsNullOrEmpty(userdomain))
{
int usercount = UserName.Length - userdomain.Length;
try
{
UserName.Substring(usercount, userdomain.Length);
}
catch
{
MessageBox.Show("Please use your " + accountinfo + userdomain + " account to log in");
return;
}
if (!UserName.Substring(usercount, userdomain.Length).Equals(userdomain, StringComparison.OrdinalIgnoreCase))
{
MessageBox.Show("Please use your " + accountinfo + userdomain + " account to log in");
return;
}
}
//build connection string to connect to VPN
string connectionstring = "\"" + connection + "\"" + " " + username + " " + password;
ConnectionObj connectionObj = new ConnectionObj();
connectionObj.ConnectionString = connectionstring;
connectionObj.CustomMessage = custommessage1;
try
{
if (!String.IsNullOrEmpty(custommessage1))
{
listBoxOut.Items.Add(custommessage1);
}
listBoxOut.Items.Add("Connecting...");
backgroundWorker.RunWorkerAsync(connectionObj);
}
catch
{
MessageBox.Show("Failed to Connect to VPN. Please check your credentials");
return;
}
}
public static int RunVPN(ConnectionObj connectionObj)
{
//create process object information
//Console.WriteLine(connectionstring); //For Debugging
ProcessStartInfo rasdialinfo = new ProcessStartInfo("\"rasdial.exe\"", connectionObj.ConnectionString);
Process process = new Process();
process.StartInfo = rasdialinfo;
//keep command shell from popping up
process.StartInfo.CreateNoWindow = true;
process.StartInfo.UseShellExecute = false;
try
{
//start process
process.Start();
}
catch
{
MessageBox.Show("Failed to Start connection.\r\n Please contact your system administrator");
return(0);
}
//add custom message to listbox if applicable
//variables for performance measuring to be output into console window for debugging
long peakPagedMem = 0,
peakWorkingSet = 0,
peakVirtualMem = 0;
//display connecting status
int i = 0;
do
{
//loop for displaying program status in console for debugging while waiting for process to exit
//runs every second
if (!process.HasExited)
{
// Refresh the current process property values.
process.Refresh();
Console.WriteLine();
// Display current process statistics.
Console.WriteLine("{0} -", process.ToString());
Console.WriteLine("-------------------------------------");
Console.WriteLine(" physical memory usage: {0}",
process.WorkingSet64);
Console.WriteLine(" base priority: {0}",
process.BasePriority);
Console.WriteLine(" priority class: {0}",
process.PriorityClass);
Console.WriteLine(" user processor time: {0}",
process.UserProcessorTime);
Console.WriteLine(" privileged processor time: {0}",
process.PrivilegedProcessorTime);
Console.WriteLine(" total processor time: {0}",
process.TotalProcessorTime);
Console.WriteLine(" PagedSystemMemorySize64: {0}",
process.PagedSystemMemorySize64);
Console.WriteLine(" PagedMemorySize64: {0}",
process.PagedMemorySize64);
// Update the values for the overall peak memory statistics.
peakPagedMem = process.PeakPagedMemorySize64;
peakVirtualMem = process.PeakVirtualMemorySize64;
peakWorkingSet = process.PeakWorkingSet64;
//show whether or not process is running or not responding
if (process.Responding)
{
Console.WriteLine("Status = Running");
}
else
{
Console.WriteLine("Status = Not Responding");
}
}
}while (!process.WaitForExit(1000));
//display exit code in console for debugging purposes
Console.WriteLine();
Console.WriteLine("Process exit code: {0}",
process.ExitCode);
// Display peak memory statistics for the process.
Console.WriteLine("Peak physical memory usage of the process: {0}",
peakWorkingSet);
Console.WriteLine("Peak paged memory usage of the process: {0}",
peakPagedMem);
Console.WriteLine("Peak virtual memory usage of the process: {0}",
peakVirtualMem);
//handling for several exit codes
//most likely exit codes are given display messages.
//list of all exit codes: https://support.microsoft.com/en-us/help/824864/list-of-error-codes-for-dial-up-connections-or-vpn-connections
return(process.ExitCode);
}
