private void OnSyslogMessageReceived(IPAddress sourceAddress, SyslogMessage msg)
{
if (SyslogMessageReceived != null)
{
SyslogMessageReceived(this, new SyslogEventArgs(sourceAddress, msg));
}
}
public void Send(SyslogMessage msg)
{
if (_disposed)
throw new ObjectDisposedException("SyslogMessage");
if (_udpClient == null)
throw new Exception("Cannot send data, connection not established");
if (msg == null)
throw new ArgumentNullException("msg", "SyslogMessage paramter null");
byte[] data = _encoding.GetBytes(msg.ToString());
_udpClient.Send(data, data.Length);
}
public void Send(SyslogMessage msg)
{
if (_disposed)
{
throw new ObjectDisposedException("SyslogMessage");
}
if (_udpClient == null)
{
throw new Exception("Cannot send data, connection not established");
}
if (msg == null)
{
throw new ArgumentNullException("msg", "SyslogMessage paramter null");
}
byte[] data = _encoding.GetBytes(msg.ToString());
_udpClient.Send(data, data.Length);
}
private void ShowSyslogMessage(IPAddress sourceAddress, SyslogMessage msg)
{
if (lstMessages.InvokeRequired)
{
ShowSyslogMessageDelegate del = new ShowSyslogMessageDelegate(ShowSyslogMessage);
this.Invoke(del, new object[] { sourceAddress, msg });
}
else
{
ListViewItem li = new ListViewItem(
new string[] {
msg.MessageTime.ToString(),
sourceAddress.ToString(),
msg.LocalTime.ToString(),
msg.Facility.ToString(),
msg.Severity.ToString(),
msg.Message});
lstMessages.Items.Add(li);
lstMessages.EnsureVisible(lstMessages.Items.Count - 1);
}
}
private void ThreadProc()
{
bool exiting = false;
do
{
try
{
IPEndPoint remoteHost = _listenPoint;
while (true)
{
Byte[] receiveBytes = _recUDPClient.Receive(ref remoteHost);
string returnData = Encoding.ASCII.GetString(receiveBytes);
SyslogMessage msg = SyslogMessage.Parse(remoteHost.Address,
returnData);
// Fire event
OnSyslogMessageReceived(remoteHost.Address, msg);
}
}
catch (ThreadAbortException)
{
exiting = true;
if (ssSwitch.TraceVerbose)
{
Trace.WriteLine("Message collection thread shutting down",
DbTraceListener.catInfo);
}
}
catch (Exception ex)
{
if (ssSwitch.TraceError)
{
Trace.WriteLine(String.Format("Error reciving syslog message: {0}",
ex.Message), DbTraceListener.catError);
}
}
} while (!exiting);
}
public SyslogEventArgs(IPAddress sourceAddress, SyslogMessage msg)
{
_sourceAddress = sourceAddress;
_msg = msg;
}
public static SyslogMessage Parse(IPAddress hostIP, string syslogString)
{
FacilityCode fc;
SeverityCode sc;
DateTime recdTime;
string msg;
// Strip out all non-printable characters - replace with spaces.
string strippedString = _msgInvalidChars.Replace(syslogString, " ");
try
{
// Try parse PRI, date and message
// Note - hostname not matched as very few devices conform to RFC
Match m = _fullFormat.Match(strippedString);
if ((m != null) && m.Success && (m.Groups.Count == 4))
{
ParseCode(m.Groups[1].ToString(), out fc, out sc);
// Try to parse both date formats
try
{
recdTime = DateTime.ParseExact(m.Groups[2].ToString(), _dateFormat1, _standardCulture);
}
catch (FormatException)
{
recdTime = DateTime.ParseExact(m.Groups[2].ToString(), _dateFormat2, _standardCulture);
}
msg = m.Groups[3].ToString();
return new SyslogMessage(hostIP.ToString(), msg, fc, sc, recdTime);
}
else
{
throw new Exception("Cannot parse message");
}
}
catch (Exception)
{
// Try and parse PRI only
try
{
Match m = _priFormat.Match(strippedString);
if ((m != null) && m.Success && (m.Groups.Count == 3))
{
ParseCode(m.Groups[1].ToString(), out fc, out sc);
msg = m.Groups[2].ToString();
SyslogMessage sm = new SyslogMessage(hostIP.ToString(), msg);
sm._facility = fc;
sm._severity = sc;
return sm;
}
else
{
throw new Exception("Cannot parse message");
}
}
catch (Exception)
{
// Cannot decode at all
return new SyslogMessage(hostIP.ToString(), strippedString);
}
}
}
public SyslogEventArgs(IPAddress sourceAddress, SyslogMessage msg)
{
_sourceAddress = sourceAddress;
_msg = msg;
}
private void btnSend_Click(object sender, System.EventArgs e)
{
if (ValidInput())
{
// Wait cursor
using (new WaitCursor())
try
{
// Lookup server IP Address
IPHostEntry IPList = Dns.GetHostEntry(txtServer.Text);
if ((IPList == null) || (IPList.AddressList.Length == 0))
throw new Exception("Unable to resolve address for host " +
txtServer.Text);
IPAddress destAddress = IPList.AddressList[0];
// Get our host name
string hostName = Dns.GetHostName();
// Create message
SyslogMessage msg = new SyslogMessage(hostName,
txtMessage.Text,
(SyslogMessage.FacilityCode) comFacility.SelectedItem,
(SyslogMessage.SeverityCode) comSeverity.SelectedItem,
DateTime.Now);
// Send message
using (SyslogClient client = new SyslogUdpClient())
{
client.Connect(destAddress, Convert.ToInt32(txtPort.Text));
client.Send(msg);
}
}
catch (Exception ex)
{
MessageBox.Show(this, "Unable to send message:\n" + ex.Message);
}
}
}
public static SyslogMessage Parse(IPAddress hostIP, string syslogString)
{
FacilityCode fc;
SeverityCode sc;
DateTime recdTime;
string msg;
// Strip out all non-printable characters - replace with spaces.
string strippedString = _msgInvalidChars.Replace(syslogString, " ");
try
{
// Try parse PRI, date and message
// Note - hostname not matched as very few devices conform to RFC
Match m = _fullFormat.Match(strippedString);
if ((m != null) && m.Success && (m.Groups.Count == 4))
{
ParseCode(m.Groups[1].ToString(), out fc, out sc);
// Try to parse both date formats
try
{
recdTime = DateTime.ParseExact(m.Groups[2].ToString(), _dateFormat1, _standardCulture);
}
catch (FormatException)
{
recdTime = DateTime.ParseExact(m.Groups[2].ToString(), _dateFormat2, _standardCulture);
}
msg = m.Groups[3].ToString();
return(new SyslogMessage(hostIP.ToString(), msg, fc, sc, recdTime));
}
else
{
throw new Exception("Cannot parse message");
}
}
catch (Exception)
{
// Try and parse PRI only
try
{
Match m = _priFormat.Match(strippedString);
if ((m != null) && m.Success && (m.Groups.Count == 3))
{
ParseCode(m.Groups[1].ToString(), out fc, out sc);
msg = m.Groups[2].ToString();
SyslogMessage sm = new SyslogMessage(hostIP.ToString(), msg);
sm._facility = fc;
sm._severity = sc;
return(sm);
}
else
{
throw new Exception("Cannot parse message");
}
}
catch (Exception)
{
// Cannot decode at all
return(new SyslogMessage(hostIP.ToString(), strippedString));
}
}
}
private void OnSyslogMessageReceived(IPAddress sourceAddress, SyslogMessage msg)
{
if (SyslogMessageReceived != null)
SyslogMessageReceived(this, new SyslogEventArgs(sourceAddress, msg));
}