Using ASP and User Names with Posting Acceptor (222618)


The information in this article applies to:

  • Microsoft Internet Information Server 4.0
This article was previously published under Q222618
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx

SUMMARY

Microsoft Posting Acceptor is a server add-on component of the Windows NT Option Pack (NTOP) that enables the use of HTTP Post (RFC 1867) to publish content to your Web site. Web administrators and authors using Posting Acceptor in conjunction with Microsoft Active Server Pages (ASP) can automate document publishing by using the logged-on user's name to store files in a virtual directory of the same name.

MORE INFORMATION

The following steps show how to install Posting Acceptor from the NTOP.

Install Posting Acceptor using one of the following two methods:

During the initial NTOP installation -OR-

Running the NTOP setup in maintenance mode and specifying Add/Remove

In either of the above scenarios, specify the installation of Posting Acceptor by following these steps:
  1. Select Microsoft Site Server Express 2.0.
  2. Click Show Subcomponents.
  3. Select Publishing - Posting Acceptor.
  4. Click OK to continue the wizard.
  5. Verify that the Cpshost.dll file is in your Scripts folder.
These next steps will walk you through creating a virtual directory to upload files to based on a user name. For this example, "Administrator" account is used; however, any valid user account may be used.
  1. Log on to your Windows NT server as "Administrator."
  2. Create a new folder on an NTFS drive such as "X:\ADMIN", where X is your drive letter.
  3. Open the security settings for the new folder.
  4. Grant NTFS Full Control permissions to the "Administrator" and "System" accounts.
  5. Remove all other users and groups.
  6. Create a new virtual directory that points to the new folder.
  7. Open the Internet Services Manager in the MMC.
  8. Right-click your default Web site.
  9. Click New, and then select Virtual Directory from the pop-up menu.
  10. Click Next to start the wizard.
  11. Enter "administrator" for the alias and click Next.
  12. Browse to the ADMIN folder from earlier and click Next.
  13. Select only Read and Write, and then click Next.
  14. Click Finish to complete the wizard.
Next, copy the following ASP code and save it to your SCRIPTS folder as "Postlogon.asp." This ASP code is actually two HTML form examples on one page.
  • The first form uses a form text field that is populated with the user's name, but allows the field's contents to be changed.
  • The second form uses a hidden form field that will also be populated with the user's name, but prevents the field's contents from being changed.
<%@LANGUAGE="VBScript"%>
<%
  ' check to see if the user has logged on at all
  If Request.ServerVariables("LOGON_USER") = "" Then
    ' force authentication if not
    Response.Clear
    Response.Status = "401 Access Denied"
    Response.End
  Else
    ' store the client's user name ins a session variable
    strLogonUser = Request.ServerVariables("LOGON_USER")
    ' is this an NT domain logon?
    If InStr(strLogonUser,"\") then
      ' strip out an NT domain from the user name if present
      strLogonUser = Mid(strLogonUser,InStr(strLogonUser,"\")+1)
    End If
  End If
%>
<html>
<body>
<h2 align="center">Logged On User Posting Acceptor Example</h2>
<hr>
<form enctype="multipart/form-data" action="/scripts/cpshost.dll?PUBLISH" method="POST">
  <center><table border="1">
    <tr>
      <th align="center" colspan="2">Using Visible Form Field</th>
    </tr>
    <tr>
      <th align="left">File to upload</th>
      <td align="left"><input name="file" type="file" size="30"></td>
    </tr>
    <tr>
      <th align="left">Destination URL</th>
      <td align="left"><input type="text" name="TargetURL" value="/<%=strLogonUser%>/" size="30">
      <input type="Submit" value="Upload..."></td>
    </tr>
  </table></center>
</form>
<hr>
<form enctype="multipart/form-data" action="/scripts/cpshost.dll?PUBLISH" method="POST">
  <input type="hidden" name="TargetURL" value="/<%=strLogonUser%>/">
  <center><table border="1">
    <tr>
      <th align="center" colspan="2">Using Hidden Form Field</th>
    </tr>
    <tr>
      <th align="left">File to upload</th>
      <td align="left"><input name="file" type="file" size="30">
      <input type="Submit" value="Upload..."></td>
    </tr>
  </table></center>
</form>
<hr>
</body>
</html>
For additional information, see the following article or articles in the Microsoft Knowledge Base:

184352 HOWTO: Upload files to the Internet Information Server

189651 SAMPLE: Uploading a File to IIS Using a Browser

189272 Upload Folders with Write and Execute Access Are Vulnerable

Modification Type:MinorLast Reviewed:6/23/2005
Keywords:kbhowto KB222618
©2004 Microsoft Corporation. All rights reserved.