static void Main(string[] args)
{
// Take all the arguments and parse them into Flags class
Flags flags = new Flags();
flags.Parse(args);
string certPath = "/opt/helvegr/certs/";
try {
string isInteractive;
int port;
// Check if the port is a valid integer
if (!int.TryParse(flags.arguments["Port"], out port))
{
Console.WriteLine("--port must be a valid integer");
flags.ShowHelpMessage(flags.command, 1);
}
// If smtp are set && --interactive are not set, else if check if hpop are set
if (flags.command == "smtp" && !flags.arguments.TryGetValue("--interactive", out isInteractive))
{
// Create an instance of SMTP client and send the email
SMTPClient smtp = new SMTPClient(flags, port, certPath, QueryType.MX);
// Start the client
smtp.Start();
}
else if (flags.command == "hpop" && !flags.arguments.TryGetValue("--interactive", out isInteractive))
{
string username = flags.arguments["Username"];
// Regex email address
var regex = "(?:[a-z0-9!#$%&'*+\\/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+\\/=?^_`{|}~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])";
Match match = Regex.Match(username, regex, RegexOptions.IgnoreCase);
// if regex match is successful
if (!match.Success)
{
Console.WriteLine("--username must be a valid email address");
flags.ShowHelpMessage(flags.command, 1);
}
// Start hpop server
POPClient hpop = new POPClient(flags, port, certPath, QueryType.MX);
hpop.Start();
}
else if (flags.arguments.TryGetValue("--interactive", out isInteractive))
{
// INTERACTIVE MODE, ONLY FOR SHOWCASING THE PROTOCOLS AND MAIL SERVER... ;))))))))
Console.Write("Enter hostname: ");
flags.arguments.Add("Username", "noone@" + Console.ReadLine());
Console.Write("Enter port number: ");
if (!int.TryParse(Console.ReadLine(), out port))
{
Console.WriteLine("Port number is not a valid integer");
Environment.Exit(1);
}
if (flags.command == "smtp")
{
flags.arguments.Add("To", flags.arguments["Username"]);
flags.arguments.Add("From", "-1");
flags.arguments.Add("Subject", "-1");
// Create an instance of SMTP client and send the email
SMTPClient smtp = new SMTPClient(flags, port, certPath, QueryType.MX);
// Start the client
smtp.Start();
}
else if (flags.command == "hpop")
{
POPClient hpop = new POPClient(flags, port, certPath, QueryType.MX);
hpop.Start();
}
}
} catch (Exception ex) {
Console.WriteLine(ex);
}
}
protected override void StartClient(SslStream stream)
{
string isInteractive;
// Check if --interactive are set
if (flags.arguments.TryGetValue("--interactive", out isInteractive))
{
Interactive(stream);
stream.Close();
Environment.Exit(0);
}
// Check if start message is sent
if (!StreamRead(stream).Contains("+OK HPOP"))
{
Console.WriteLine("Missing server greeting");
Environment.Exit(1);
}
// Authenticate
StreamWrite(stream, "APOP " + flags.arguments["Username"] + " " + flags.arguments["Password"]);
// Check if successful
if (!StreamRead(stream).Contains("+OK maildrop"))
{
Console.WriteLine("Authentication failed");
flags.ShowHelpMessage(flags.command, 1);
}
string argumentValue;
string startIndex, endIndex;
string memberName;
string action = "";
//Find the action operation
foreach (KeyValuePair <string, Flag> pair in flags.flags)
{
memberName = pair.Key.Substring(2, 1).ToUpper() + pair.Key.Substring(3);
if (pair.Value.isAction && flags.arguments.TryGetValue(memberName, out argumentValue))
{
if (memberName == "List")
{
if (flags.arguments.TryGetValue("Start", out startIndex))
{
endIndex = flags.arguments["End"];
action = memberName.Substring(0, 4).ToUpper() + " " + argumentValue + " " + startIndex + " " + endIndex;
break;
}
else
{
action = memberName.Substring(0, 4).ToUpper() + " " + argumentValue;
break;
}
}
else
{
action = memberName.Substring(0, 4).ToUpper() + " " + argumentValue;
break;
}
}
}
// Execute action operation
StreamWrite(stream, action);
// Read response
string output = StreamRead(stream);
// Check if error
if (output.Contains("-ERR"))
{
Console.Write(output);
StreamWrite(stream, "QUIT");
Environment.Exit(1);
}
// Read all lines until +DONE
while (!output.Contains("+DONE"))
{
output += StreamRead(stream);
}
Console.Write(output);
// Quit
StreamWrite(stream, "QUIT");
}
