Solved

Is there an alternative method to using  Environ("UserName") with Microsoft access

Posted on 2010-11-25
12
737 Views
Last Modified: 2012-05-10
I have been using the  Environ("UserName") funcion and it works great.  It retuns the username of the current user logged into the system and I can use that name to perform different tasks.

Problem:  I built an application for an organization that categorizes its users into different security classes.  Power Users, laptop users, and desktop users.  

The application works fine for the Power users and laptop users, but falls into error when desktop users are using the application.

What I found is that the deskstop users are restricted from accessing their C: drive and desktop and can only access the shared folders on the network and applications installed on the PC.

Is there another funciton or method I can use to capture the user name of a user with desktop privilages?
0
Comment
Question by:RDLFC
  • 6
  • 4
  • 2
12 Comments
 
LVL 7

Expert Comment

by:RemRemRem
ID: 34213124
This might do the trick:

Public Function funWinUser() As String
    ' Comments  : Retrieves the name of the user logged into Windows
    
    On Error GoTo gtErr
    '
    Dim lngLen As Long
    Dim strBuf As String
    
    Const MaxUserName As Integer = 255
    
    strBuf = Space$(MaxUserName)
    
    lngLen = MaxUserName
    
    If CBool(TSB_API_GetUserName(strBuf, lngLen)) Then
        funWinUser = Left(strBuf, lngLen - 1)
    Else
        funWinUser = ""
    End If
    
gtExit:
    Exit Function
    
gtErr:
    MsgBox Err
    GoTo gtExit
    
End Function

Open in new window


-Rachel
0
 
LVL 7

Expert Comment

by:RemRemRem
ID: 34213131
Whups, you'll need the declaration:

' Objects for GetUserName_TSB()
Declare Function TSB_API_GetUserName Lib "advapi32.dll" Alias "GetUserNameA" (ByVal lpBuffer As String, nSize As Long) As Long

Open in new window

0
 
LVL 17

Expert Comment

by:JezWalters
ID: 34213147
What exactly do you mean by "desktop privileges"?
0
 

Author Comment

by:RDLFC
ID: 34213189
RemRemRem i will check out your solution later.

JezWalters by desktop privileges I mean the user is restricted because of network security reasons from accessing their C: drive.
0
 
LVL 17

Expert Comment

by:JezWalters
ID: 34213204
No offense to RemRemRem, but I reckon you'll find her solution returns the same results as your Environ() approach.

Have you thought of establishing desktop privileges by trying to write a temporary file to the C: drive instead?
0
 

Author Comment

by:RDLFC
ID: 34213219
No I have to work around the company's security envirionment.  I will not be able to alter any user privialges.  

0
Why You Should Analyze Threat Actor TTPs

After years of analyzing threat actor behavior, it’s become clear that at any given time there are specific tactics, techniques, and procedures (TTPs) that are particularly prevalent. By analyzing and understanding these TTPs, you can dramatically enhance your security program.

 
LVL 17

Expert Comment

by:JezWalters
ID: 34213250
I think you're misunderstanding my suggestion - you can determine the user's privileges by attempting to write a file to the C: drive.

If the attempt fails the user DOESN'T have desktop privileges.  If the attempt succeeds, the user DOES have desktop privileges and you can then delete the temporary file.
0
 

Author Comment

by:RDLFC
ID: 34213265
okay.  I can use that.  Do you have code for me to do that via VBA?
0
 
LVL 17

Expert Comment

by:JezWalters
ID: 34213273
... please hold the line ...!  :-)
0
 
LVL 17

Accepted Solution

by:
JezWalters earned 500 total points
ID: 34213288
OK, how about something like this?
Option Explicit

Option Compare Database



Public Function DesktopPrivileges() As Boolean



    ' Declare constants

    Const TEST_FILE As String = "C:\Temp\TestFile.txt"



    ' Declare variables

    Dim intTestFile As Integer



    ' Open test file

    intTestFile = FreeFile

    On Error GoTo OpenError:

    Open TEST_FILE For Output As intTestFile

    DesktopPrivileges = True



    ' Close & delete test file

    Close intTestFile

    Kill TEST_FILE



    ' Exit

    Exit Function



' Handle open error

OpenError:



    DesktopPrivileges = False



End Function

Open in new window

0
 

Author Closing Comment

by:RDLFC
ID: 34213572
I can use your solution to accomplish what I am interested in doing.
0
 
LVL 17

Expert Comment

by:JezWalters
ID: 34216097
Only a 'B' grade?  What didn't work?
0

Featured Post

How to run any project with ease

Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
- Combine task lists, docs, spreadsheets, and chat in one
- View and edit from mobile/offline
- Cut down on emails

Join & Write a Comment

In the previous article, Using a Critera Form to Filter Records (http://www.experts-exchange.com/A_6069.html), the form was basically a data container storing user input, which queries and other database objects could read. The form had to remain op…
Describes a method of obtaining an object variable to an already running instance of Microsoft Access so that it can be controlled via automation.
Familiarize people with the process of utilizing SQL Server views from within Microsoft Access. Microsoft Access is a very powerful client/server development tool. One of the SQL Server objects that you can interact with from within Microsoft Access…
Using Microsoft Access, learn some simple rules for how to construct tables in a relational database. Split up all multi-value fields into single values: Split up fields that belong to other things into separate tables: Make sure that all record…

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now