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/**
* Namespace: System.Web.Utils
* Class: IISVersionInfo
*
* Author: Gaurav Vaish
* Maintainer: gvaish@iitk.ac.in
* Contact: <my_scripts2001@yahoo.com>, <gvaish@iitk.ac.in>
* Implementation: yes
* Status: ??%
*
* (C) Gaurav Vaish (2001)
*/
using System;
using System.Diagnostics;
using System.Web;
using System.Web.Utils;
namespace System.Web.Utils
{
//FIXME: This is highly Windows/IIS specific code. What about Apache related stuff?
internal class IISVersionInfo
{
private static string isapiVersion;
private static string mscoreeVersion;
private static string systemWebVersion;
private static readonly object lockObj = null;
public IISVersionInfo()
{
}
internal static string IsapiVersion
{
get
{
if(isapiVersion==null)
{
lock(lockObj)
{
// Recheck - another thread may have set the value
// before entering lock / exiting previous lock
if(isapiVersion==null)
{
//FIXME: What about Apache? What dll/shared-object to be loaded?
isapiVersion = GetLoadedModuleVersion("aspnet_isapi.dll");
}
}
}
return isapiVersion;
}
}
internal static string ClrVersion
{
get
{
if(mscoreeVersion==null)
{
lock(lockObj)
{
if(mscoreeVersion==null)
{
mscoreeVersion = GetLoadedModuleVersion("mscorlib.dll");
}
}
}
return mscoreeVersion;
}
}
internal static string SystemWebVersion
{
get
{
if(systemWebVersion == null)
{
lock(lockObj)
{
if(systemWebVersion==null)
{
systemWebVersion = (FileVersionInfo.GetVersionInfo((typeof(HttpRuntime)).Module.FullyQualifiedName)).FileVersion;
}
}
}
return systemWebVersion;
}
}
[MonoTODO]
internal static string GetLoadedModuleVersion(string modulename)
{
//TODO: Load the version information from the module
// Needs native calls - which ones, since the module will not be .Net aware
throw new NotImplementedException();
}
[MonoTODO]
internal static string GetLoadedModuleFilename(string modulename)
{
throw new NotImplementedException();
}
}
}
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