User Impersonation using com dll in asp

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C++

ASP

ASP.NET

COM

hi guyz,


i tried to get performance counters details from system in a network.

this project is on web(ASP.NET ), Currently on local host.

To get the conters details , i created a dll in vc++ .


I call Code to Imersonte User .After Getting Counters data, i Called REVERTOSELF to end impersonation.

To Imersonate User :

I called the following Functions :

1.LogonUser : to logon as New user

2.DuplicateTokenEx : Duplicate The token with security features .

3.ImpersonateLoggedOnUser : To impersonate the user


Then I cal PdhConnectMachine To get Connect with specifed User.

Then I cal PdhEnumObjects 2 time .

first to allocate mennory to hold the performance object

second to get all Performance object list.



then i cal ReverttoSelf to end impersonation.



MY problem is that , the After the Revertself i get current user name by using
GetUserName Api.

i got different username (expected Username : SUMITH).ie ,

The user before impersonation : Sumith

The user After impersonation : Admin

when unimpersonate (calling reverttoself) the user : Local Service




i used the CoInitializeSecurity () . But the Result is same? What i do some one

give me a solution?