/// <summary>
/// Adds an event message file to the cache.
/// </summary>
/// <param name="messageFile">An event message file.</param>
public void Add(EventMessageFile messageFile)
{
if (messageFile != null)
{
string path = messageFile.Path.ToLower(CultureInfo.CurrentCulture);
if (!string.IsNullOrEmpty(path))
{
if (!_messageFiles.ContainsKey(path))
{
_messageFiles.Add(path, messageFile);
}
else
{
Logger.Debug(CultureInfo.CurrentCulture, "Did not add message file '{0}' for '{1}' due to it being a duplicate", path, messageFile.FileName);
}
}
else
{
Logger.Debug(CultureInfo.CurrentCulture, "Did not add message file for '{0}' due to an empty path", messageFile.FileName);
}
}
}
/// <summary>
/// Process all the entries in the EventMessageFile registry value.
/// </summary>
/// <param name="logName"></param>
/// <param name="sourceName"></param>
/// <param name="eventMessageFiles"></param>
private void ProcessEventMessageFiles(string logName, string sourceName, string eventMessageFiles)
{
if (!string.IsNullOrEmpty(eventMessageFiles))
{
string systemRootPath = Environment.GetEnvironmentVariable("systemroot").ToLower(CultureInfo.CurrentCulture);
string winDirPath = Environment.GetEnvironmentVariable("windir").ToLower(CultureInfo.CurrentCulture);
// fix up paths to be literal paths
eventMessageFiles = eventMessageFiles.ToLower(CultureInfo.CurrentCulture);
eventMessageFiles = eventMessageFiles.Replace("%systemroot%", systemRootPath);
eventMessageFiles = eventMessageFiles.Replace(@"\systemroot", systemRootPath);
eventMessageFiles = eventMessageFiles.Replace("%windir%", winDirPath);
eventMessageFiles = eventMessageFiles.Replace("$(runtime.system32)", Environment.GetFolderPath(Environment.SpecialFolder.System)); //seen on Windows 8+ for WinHttpAutoProxySvc
foreach (string messageFilePath in eventMessageFiles.Split(new string[] { ";" }, StringSplitOptions.RemoveEmptyEntries))
{
// can't directly modify messageFilePath since it is part of the foreach
string modifiedMessageFilePath = messageFilePath.Trim();
// some paths are missing a slash between %systemroot% and the rest of the path
// one example is the EventMessageFile registry value for the Eventlog\System\vsmraid\ on Windows Vista
// we do the same check for %windir% just to be safe
if (modifiedMessageFilePath.StartsWith(systemRootPath, StringComparison.CurrentCultureIgnoreCase) &&
!modifiedMessageFilePath.StartsWith(systemRootPath + @"\", StringComparison.CurrentCultureIgnoreCase))
{
modifiedMessageFilePath = modifiedMessageFilePath.Replace(systemRootPath, systemRootPath + @"\");
}
if (modifiedMessageFilePath.StartsWith(winDirPath, StringComparison.CurrentCultureIgnoreCase) &&
!modifiedMessageFilePath.StartsWith(winDirPath + @"\", StringComparison.CurrentCultureIgnoreCase))
{
modifiedMessageFilePath = modifiedMessageFilePath.Replace(winDirPath, winDirPath + @"\");
}
// check to see if the messagefile has already been parsed
// otherwise parse the messagefile and add it to the cache
if (EventMessageFileCache.Instance.Contains(modifiedMessageFilePath))
{
EventMessageFiles.Add(EventMessageFileCache.Instance.Get(modifiedMessageFilePath));
}
else
{
string[] messageFilePaths = modifiedMessageFilePath.Split(new string[] { @"\" }, StringSplitOptions.RemoveEmptyEntries);
if (messageFilePaths.Length > 0)
{
string file = messageFilePaths.Last();
if (!string.IsNullOrEmpty(file))
{
EventMessageFile messageFile = new EventMessageFile(logName, sourceName, file, modifiedMessageFilePath);
EventMessageFileCache.Instance.Add(messageFile);
EventMessageFiles.Add(messageFile);
}
else
{
Logger.Debug(CultureInfo.CurrentCulture, "Message file name is empty '{0}'='{1}' for log '{2}' and source '{3}'", modifiedMessageFilePath, eventMessageFiles, logName, sourceName);
}
}
else
{
Logger.Debug(CultureInfo.CurrentUICulture, "Message file path has no elements '{0}'='{1}' for log '{2}' and source '{3}'", modifiedMessageFilePath, eventMessageFiles, logName, sourceName);
}
}
}
}
}