public void dumpSettingsLive()
{
// base/network
AppGlobals.writeSettingUI("Host name..................: {0}", AppGlobals.hostName);
AppGlobals.writeSettingUI("listen IP..................: {0}", AppGlobals.listenAddress);
AppGlobals.writeSettingUI("listen port................: {0}", AppGlobals.listenPort);
AppGlobals.writeSettingUI("Receive timeout............: {0}", AppGlobals.receiveTimeout);
// hardlimits
AppGlobals.writeSettingUI("Max errors.................: {0}", AppGlobals.maxSmtpErr);
AppGlobals.writeSettingUI("Max NOOP...................: {0}", AppGlobals.maxSmtpNoop);
AppGlobals.writeSettingUI("Max VRFY/EXPN..............: {0}", AppGlobals.maxSmtpVrfy);
AppGlobals.writeSettingUI("Max RCPT TO................: {0}", AppGlobals.maxSmtpRcpt);
// sessions
AppGlobals.writeSettingUI("Max messages per session...: {0}", AppGlobals.maxMessages);
AppGlobals.writeSettingUI("Max parallel sessions......: {0}", AppGlobals.maxSessions);
// messages
AppGlobals.writeSettingUI("Store message data.........: {0}", AppGlobals.storeData);
AppGlobals.writeSettingUI("Storage path...............: {0}", AppGlobals.storePath);
AppGlobals.writeSettingUI("Max message size...........: {0}", AppGlobals.maxDataSize);
// logs
AppGlobals.writeSettingUI("Logfiles path..............: {0}", AppGlobals.logPath);
AppGlobals.writeSettingUI("Verbose logging............: {0}", AppGlobals.logVerbose);
// tarpitting
AppGlobals.writeSettingUI("Initial banner delay.......: {0}", AppGlobals.bannerDelay);
AppGlobals.writeSettingUI("Error delay................: {0}", AppGlobals.errorDelay);
// filtering/rejecting
AppGlobals.writeSettingUI("Do tempfail (4xx) on DATA..: {0}", AppGlobals.doTempFail);
AppGlobals.writeSettingUI("Check for early talkers....: {0}", AppGlobals.earlyTalkers);
// DNS filtering
AppGlobals.writeSettingUI("DNS Whitelists.............: {0}", AppGlobals.whiteLists != null? AppGlobals.whiteLists.Length:0);
AppGlobals.writeSettingUI("DNS Blacklists.............: {0}", AppGlobals.blackLists != null?AppGlobals.blackLists.Length:0);
// local domains/mailboxes
AppGlobals.writeSettingUI("Local domains..............: {0}", AppGlobals.LocalDomains.Count);
AppGlobals.writeSettingUI("Local mailboxes............: {0}", AppGlobals.LocalMailBoxes.Count);
}
private void button1_Click(object sender, RoutedEventArgs e)
{
button1.IsEnabled = false;
button2.IsEnabled = true;
button3.IsEnabled = true;
if (null != listener)
{
try { listener.Stop();
tokenSource.Cancel();
AppGlobals.writeConsole("Listening for connections on {0}:{1} is ended.", listenAddr, listenPort);
AppGlobals.writeLogUI("Listening for connections on {0}:{1} is ended.", listenAddr, listenPort); }
catch { }
}
}
private async void button2_Click(object sender, RoutedEventArgs e)
{
button1.IsEnabled = true;
button2.IsEnabled = false;
button3.IsEnabled = false;
richTextBox1.Document.Blocks.Clear();
richTextBox2.Document.Blocks.Clear();
richTextBox3.Document.Blocks.Clear();
tokenSource = new CancellationTokenSource();
CancellationToken ct = tokenSource.Token;
// load the config
settingClass.loadConfig();
settingClass.dumpSettingsLive();
// tell we're starting up and, if verbose, dump config parameters
AppGlobals.writeConsole("{0} {1} starting up (NET {2})", AppGlobals.appName, AppGlobals.appVersion, AppGlobals.appRuntime);
AppGlobals.writeLogUI("{0} {1} starting up (NET {2})", AppGlobals.appName, AppGlobals.appVersion, AppGlobals.appRuntime);
if (AppGlobals.logVerbose)
{
settingClass.dumpSettings();
}
// setup the listening IP:port
listenAddr = AppGlobals.listenIP;
listenPort = AppGlobals.listenPort;
// try starting the listener
try
{
listener = new TcpListener(listenAddr, listenPort);
listener.Start();
}
catch (Exception ex)
{
AppGlobals.writeConsole("Listener::Error: " + ex.Message);
AppGlobals.writeLogUI("Listener::Error: " + ex.Message);
}
// tell we're ready to accept connections
AppGlobals.writeConsole("Listening for connections on {0}:{1}", listenAddr, listenPort);
AppGlobals.writeLogUI("Listening for connections on {0}:{1}", listenAddr, listenPort);
// run until interrupted (Ctrl-C in our case)
await Task.Run(() =>
{
ct.ThrowIfCancellationRequested();
while (true)
{
if (ct.IsCancellationRequested)
{
// Clean up here, then...
ct.ThrowIfCancellationRequested();
}
try
{
// wait for an incoming connection, accept it and spawn a thread to handle it
SMTPsession handler = new SMTPsession(listener.AcceptTcpClient());
Thread thread = new System.Threading.Thread(new ThreadStart(handler.handleSession));
thread.Start();
}
catch (Exception ex)
{
// we got an error
AppGlobals.writeConsole("Handler::Error: " + ex.Message);
AppGlobals.writeLogUI("Listening for connections on {0}:{1}", listenAddr, listenPort);
//timeToStop = true;
break;
}
}
}, tokenSource.Token);
// finalize
if (null != listener)
{
try {
listener.Stop();
}
catch { }
finally
{
tokenSource.Dispose();
AppGlobals.writeConsole("{0} {1} shutting down (NET {2})", AppGlobals.appName, AppGlobals.appVersion, AppGlobals.appRuntime);
AppGlobals.writeLogUI("{0} {1} shutting down (NET {2})", AppGlobals.appName, AppGlobals.appVersion, AppGlobals.appRuntime);
}
}
}
// loads/parses the config values
public void loadConfig()
{
// listen address
IPAddress listenIP = IPAddress.Loopback;
string listenAddress = ListenAddresstextBox.Text;
if (String.IsNullOrEmpty(listenAddress))
{
listenAddress = "127.0.0.1";
}
if (false == IPAddress.TryParse(listenAddress, out listenIP))
{
listenAddress = "127.0.0.1";
listenIP = IPAddress.Loopback;
}
// listen port
int listenPort = int.Parse(ListenPorttextBox.Text);
if ((listenPort < 1) || (listenPort > 65535))
{
listenPort = 25;
}
// receive timeout
int receiveTimeout = int.Parse(ReceiveTimeOuttextBox.Text);
if (receiveTimeout < 0)
{
receiveTimeout = 0;
}
// hostname (for the banner)
string hostName = HostNametextBox.Text;
if (string.IsNullOrEmpty(hostName))
{
hostName = System.Net.Dns.GetHostEntry("").HostName;
}
// true=emits a "tempfail" when receiving the DATA command
bool doTempFail = DoTempFailcheckBox.IsChecked.GetValueOrDefault();
// true=stores the email envelope and data into files
bool storeData = StoreDatacheckBox.IsChecked.GetValueOrDefault();
// max size for a given email message
long storeSize = long.Parse(MaxDataSizetextBox.Text);
if (storeSize < 0)
{
storeSize = 0;
}
// max # of messages for a session
int maxMsgs = int.Parse(MaxMessagestextBox.Text);
if (maxMsgs < 1)
{
maxMsgs = 10;
}
// path for the email storage
string storePath = StorePathtextBox.Text;
if (String.IsNullOrEmpty(storePath))
{
storePath = Path.GetTempPath();
}
if (!storePath.EndsWith("\\"))
{
storePath = storePath + "\\";
}
// max # of parallel sessions, further requests will be rejected
long maxSessions = long.Parse(MaxSessionstextBox.Text);
if (maxSessions < 1)
{
maxSessions = 16;
}
// path for the log file
string logPath = LogPathtextBox.Text;
if (String.IsNullOrEmpty(logPath))
{
logPath = Path.GetTempPath();
}
if (!logPath.EndsWith("\\"))
{
logPath = logPath + "\\";
}
// verbose logging
bool verboseLog = VerboseLoggingcheckBox.IsChecked.GetValueOrDefault();
// early talker detection
bool earlyTalk = DoEarlyTalkcheckBox.IsChecked.GetValueOrDefault();
// DNS whitelist providers, empty to not perform the check
string whiteLists = RWLproviderstextBox.Text;
string[] RWL = null;
if (!string.IsNullOrEmpty(whiteLists))
{
RWL = whiteLists.Split(',');
}
// DNS blacklist providers, empty to not perform the check
string blackLists = RBLproviderstextBox.Text;
string[] RBL = null;
if (!string.IsNullOrEmpty(blackLists))
{
RBL = blackLists.Split(',');
}
// hardlimits for errors, noop etc..
int maxErrors = int.Parse(MaxSmtpErrorstextBox.Text);
if (maxErrors < 1)
{
maxErrors = 5;
}
int maxNoop = int.Parse(MaxSmtpNooptextBox.Text);
if (maxNoop < 1)
{
maxNoop = 7;
}
int maxVrfy = int.Parse(MaxSmtpVrfytextBox.Text);
if (maxVrfy < 1)
{
maxVrfy = 10;
}
int maxRcpt = int.Parse(MaxSmtpRcpttextBox.Text);
if (maxRcpt < 1)
{
maxRcpt = 100;
}
// delays (tarpitting)
int bannerDelay = int.Parse(BannerDelaytextBox.Text);
if (bannerDelay < 0)
{
bannerDelay = 0;
}
int errorDelay = int.Parse(ErrorDelaytextBox.Text);
if (errorDelay < 0)
{
errorDelay = 0;
}
// local domains and mailboxes
List <string> domains = new List <string>();
List <string> mailboxes = new List <string>();
string fileName = LocalDomainstextBox.Text;
if (!string.IsNullOrEmpty(fileName))
{
domains = AppGlobals.loadFile(fileName);
}
fileName = LocalMailBoxestextBox.Text;
if (!string.IsNullOrEmpty(fileName))
{
mailboxes = AppGlobals.loadFile(fileName);
}
// set the global values
AppGlobals.listenIP = listenIP;
AppGlobals.listenAddress = listenAddress;
AppGlobals.listenPort = listenPort;
AppGlobals.receiveTimeout = receiveTimeout;
AppGlobals.hostName = hostName.ToLower();
AppGlobals.doTempFail = doTempFail;
AppGlobals.storeData = storeData;
AppGlobals.maxDataSize = storeSize;
AppGlobals.maxMessages = maxMsgs;
AppGlobals.storePath = storePath;
AppGlobals.maxSessions = maxSessions;
AppGlobals.logPath = logPath;
AppGlobals.logVerbose = verboseLog;
AppGlobals.earlyTalkers = earlyTalk;
AppGlobals.whiteLists = RWL;
AppGlobals.blackLists = RBL;
AppGlobals.maxSmtpErr = maxErrors;
AppGlobals.maxSmtpNoop = maxNoop;
AppGlobals.maxSmtpVrfy = maxVrfy;
AppGlobals.maxSmtpRcpt = maxRcpt;
AppGlobals.bannerDelay = bannerDelay;
AppGlobals.errorDelay = errorDelay;
AppGlobals.LocalDomains = domains;
AppGlobals.LocalMailBoxes = mailboxes;
}