public static void Initialize()
{
if (initialized)
{
return;
}
try
{
foreach (string name in RepositoryNames)
{
EEventRepository repos = (EEventRepository)Enum.Parse(typeof(EEventRepository), name);
ReadRepositoryEvents(repos);
}
fsw.Path = InstallPath;
fsw.Filter = "*.xml";
fsw.NotifyFilter = NotifyFilters.LastWrite;
fsw.Changed += new FileSystemEventHandler(OnChanged);
fsw.EnableRaisingEvents = true; // start monitoring
}
catch
{
MessageBox.Show("There is a problem monitoring for new events - the Crystal registry is likely corrupt. Please reinstall the product.");
}
initialized = true;
}
private static Guid?ReadRepositoryEvents(EEventRepository repos)
{
string xmlFile = InstallPath + repos.ToString() + ".xml";
Guid? lastEvent = null;
if (!File.Exists(xmlFile))
{
return(null);
}
bool mutexHeld = false;
try
{
eventWriterMutex.WaitOne();
mutexHeld = true;
using (FileStream fs = new FileStream(xmlFile, FileMode.Open))
{
using (XmlReader xml = XmlReader.Create(fs))
{
lastEvent = ReadAndAddDifference(repos, xml);
}
}
}
catch (Exception ex)
{
// not a valid repository
//MessageBox.Show(ex.ToString());
}
finally
{
if (mutexHeld)
{
eventWriterMutex.ReleaseMutex();
}
}
return(lastEvent);
}
private static Guid?ReadAndAddDifference(EEventRepository repos, XmlReader xml)
{
Guid?firstNewEvent = null;
bool foundLastEvent = true;
List <EventItem> eventItems = null;
EventItem lastEvent = null, newEvent = null;
if (!events.TryGetValue(repos, out eventItems))
{
eventItems = new List <EventItem>();
events.Add(repos, eventItems);
}
if (eventItems.Count != 0)
{
lastEvent = eventItems[eventItems.Count - 1];
foundLastEvent = false;
}
while (xml.Read())
{
if (String.Compare(xml.Name, "event", true) != 0 && newEvent == null)
{
continue;
}
try
{
switch (xml.NodeType)
{
case XmlNodeType.Element:
string strId = xml.GetAttribute("eventid");
if (strId == null)
{
continue;
}
Guid eventId = new Guid(strId);
if (foundLastEvent == false)
{
if (lastEvent.EventGuid.Equals(eventId))
{
foundLastEvent = true;
}
break;
}
if (!firstNewEvent.HasValue)
{
firstNewEvent = eventId;
}
newEvent = new EventItem();
newEvent.EventRepository = repos;
DateTime.TryParse(xml.GetAttribute("date"), null, System.Globalization.DateTimeStyles.AdjustToUniversal, out newEvent.EventDate);
//date="12/01/2012 22:27:16" (important to parse exact otherwise US dates will only parse 1/3rd of the month!!
DateTime.TryParseExact(xml.GetAttribute("date"), "dd/MM/yyyy HH:mm:ss", new System.Globalization.CultureInfo("en-GB").DateTimeFormat, System.Globalization.DateTimeStyles.None, out newEvent.EventDate);
newEvent.EventGuid = eventId;
newEvent.EventTitle = xml.GetAttribute("title");
newEvent.EventRisk = xml.GetAttribute("risk");
newEvent.EventProcess = xml.GetAttribute("procid");
if (newEvent.EventProcess != null)
{
int idx = newEvent.EventProcess.IndexOf(']');
if (idx != -1 && newEvent.EventProcess[0] == '[')
{
newEvent.EventProcess = newEvent.EventProcess.Substring(1, idx - 1);
}
}
break;
case XmlNodeType.Text:
if (newEvent != null)
{
newEvent.EventMessage = xml.Value;
if (newEvent.Valid)
{
eventItems.Add(newEvent);
}
newEvent = null;
}
break;
}
}
catch
{
continue;
}
}
return(firstNewEvent);
}
private void DisplayNewEvent(EEventRepository r, EventItem e, bool isRealtime)
{
try
{
if (this.lvLatestAlerts.InvokeRequired)
{
lvLatestAlerts.Invoke(new DisplayNewEventDelegate(DisplayNewEvent), new object[] { r, e, isRealtime });
}
else
{
lock (displaylock)
{
EThreatRiskRating risk = (EThreatRiskRating)Enum.Parse(typeof(EThreatRiskRating), e.EventRisk, true);
Color riskColor = Color.LightGray;
if (displayHighRiskOnly)
{
if (risk != EThreatRiskRating.HighRisk && risk != EThreatRiskRating.MediumRisk)
{
return;
}
}
switch (risk)
{
case EThreatRiskRating.Information:
riskColor = Color.LightGray;
break;
case EThreatRiskRating.LowRisk:
riskColor = Color.LightGreen;
break;
case EThreatRiskRating.MediumRisk:
riskColor = Color.Orange;
break;
case EThreatRiskRating.HighRisk:
riskColor = Color.OrangeRed;
break;
}
string date = e.EventDate.ToString().Substring(0, e.EventDate.ToString().IndexOf(' '));
string time = e.EventDate.ToString().Substring(e.EventDate.ToString().IndexOf(' ') + 1);
ListViewItem lvi = new ListViewItem(new string[] { date, time, e.EventTitle });
lvi.BackColor = riskColor;
lvi.Tag = e;
lvi.ToolTipText = string.Format("Date/Time: {0} - {1}\nRisk: {2}\nTitle: {3}\nMessage: {4}\n", date, time, e.EventRisk, e.EventTitle, e.EventMessage);
lvLatestAlerts.Items.Insert(0, lvi);
if (lvLatestAlerts.Items.Count > 250)
{
lvLatestAlerts.Items.RemoveAt(250);
}
if (isRealtime && risk == EThreatRiskRating.HighRisk)
{
IndividualAlert ia = new IndividualAlert();
ia.ShowEvent(e);
ia.Show();
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void DisplayNewEvent(EEventRepository r, EventItem e, bool isRealtime)
{
try
{
if (this.lvAlerts.InvokeRequired)
{
lvAlerts.Invoke(new DisplayNewEventDelegate(DisplayNewEvent), new object[] { r, e, isRealtime });
}
else
{
if (String.Compare(cmbRepos.Text, r.ToString(), true) != 0 && String.Compare(cmbRepos.Text, "All", true) != 0)
{
return;
}
lock (displaylock)
{
EThreatRiskRating risk = (EThreatRiskRating)Enum.Parse(typeof(EThreatRiskRating), e.EventRisk, true);
Color riskColor = Color.LightGray;
switch (risk)
{
case EThreatRiskRating.Information:
riskColor = Color.LightGray;
break;
case EThreatRiskRating.LowRisk:
riskColor = Color.LightGreen;
break;
case EThreatRiskRating.MediumRisk:
riskColor = Color.Orange;
break;
case EThreatRiskRating.HighRisk:
riskColor = Color.OrangeRed;
break;
}
string date = e.EventDate.ToString().Substring(0, e.EventDate.ToString().IndexOf(' '));
string time = e.EventDate.ToString().Substring(e.EventDate.ToString().IndexOf(' ') + 1);
ListViewItem lvi = new ListViewItem(new string[] { date, time, e.EventProcess, e.EventRisk, e.EventTitle });
lvi.BackColor = riskColor;
lvi.Tag = e;
bool showAllCount = false;
int showMax = 0;
if (!GetFormItemsCount(out showMax, out showAllCount))
{
showAllCount = true;
}
if (!showAllCount && lvAlerts.Items.Count == showMax)
{
lvAlerts.Items.RemoveAt(showMax - 1);
}
lvAlerts.Items.Insert(0, lvi);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}