VBScript: Cannot find/click a button on webpage automatically RRS feed

  • Question

  • Hello:

    Could use some help here please.  We have to maintain a bunch of laptops which will NEVER connect to the internet (security reasons).  There is a single laptop of the same type and disk image which does connect to the internet for patch management.  

    They run Windows 10 and on the internet laptop I use a script which uses the wsus2 cab file to find missing updates.

    Now I want to take that script's output from the command line and have it  download the missing updates for me. 

    In my script, I import the findings, find the KB number, append that KB number to the end of "https://www.catalog.update.microsoft.com/Search.aspx?q=", get the webpage in a variable, parse the variable for the patch name, and then *try* to get the download button which corresponds to the patch name.

    For example, the output says "2017-07 Security Update for Adobe Flash Player for Windows 10 Version 1703 for x64-based Systems (KB4025376)" is missing.

    So I get the URL, and download the source... which looks like this:

        <td class="resultsbottomBorder resultspadding" id="9ebe5d13-4966-4cdb-a612-9780df621411_C1_R0">
            <a id='9ebe5d13-4966-4cdb-a612-9780df621411_link' href="javascript:void(0);" onclick='goToDetails("9ebe5d13-4966-4cdb-a612-9780df621411");'>
                2017-07 Security Update for Adobe Flash Player for Windows 10 Version 1703 for x64-based Systems (KB4025376)
        <td class="resultsbottomBorder resultspadding" id="9ebe5d13-4966-4cdb-a612-9780df621411_C2_R0">
            Windows 10
        <td class="resultsbottomBorder resultspadding" id="9ebe5d13-4966-4cdb-a612-9780df621411_C3_R0">
           Security Updates
        <td class="resultsbottomBorder resultspadding " id="9ebe5d13-4966-4cdb-a612-9780df621411_C4_R0">
        <td class="resultsbottomBorder resultspadding" id="9ebe5d13-4966-4cdb-a612-9780df621411_C5_R0">
        <td class="resultsbottomBorder resultspadding resultsSizeWidth" id="9ebe5d13-4966-4cdb-a612-9780df621411_C6_R0">
            <span id="9ebe5d13-4966-4cdb-a612-9780df621411_size">20.7 MB</span> 
            <span class="noDisplay" id="9ebe5d13-4966-4cdb-a612-9780df621411_originalSize">21711921</span>
        <td class="resultsbottomBorder resultsButtonWidth" id="9ebe5d13-4966-4cdb-a612-9780df621411_C7_R0">
            <input id="9ebe5d13-4966-4cdb-a612-9780df621411" class="flatLightBlueButton" type="button" value='Download' />

    I say "try" because that is where the script doesn't work.

    Before posting, I looked at https://stackoverflow.com/questions/5292860/click-button-on-webpage-via-vbscript.  No help.  I'm posting this so you all don't think I didn't RTFM beforehand.

    The script fails on (yeah, I'm hardcoding the ID for now just to get it working... will be a variable later):


    I also tried just using a http provider, rather than an IE object, and that failed too:


    Here's my script:

        ' Test data -- not going to be in the production script.  The output from the wsus scan 
        ' will be imported here.
        Dim findings(1)
        findings(0) = "2017-07 Cumulative Update for Windows 10 Version 1703 for x64-based Systems (KB4025342_Fail)"
        findings(1) = "2017-07 Security Update for Adobe Flash Player for Windows 10 Version 1703 for x64-based Systems (KB4025376)"
        ' *****
        ' Production script follows
        ' *****
        ' An array to hold all the findings from the wsus output.  
        ' This array will change in size and is not declared as fixed.
        Dim patches()
        ' Just a counter.
        Dim i : i = 0
        ' Ints from parsing the strings created fromn the findings.
        Dim firstParen, lastParen, length
        Dim kb
        Dim kbAndNameHash : Set kbAndNameHash = CreateObject("Scripting.Dictionary")
        ' Iterate through the results and populate the array... putting this stuff into
        ' an array because the original MS script just redirected the findings to 
        ' output -- you couldn't do anything automatically with it afterwards.
        For Each item In findings 
            ReDim Preserve patches(i)
            patches(i) = item 
            i = i + 1
        For Each thingy In patches
            ' Need to parse the string to find just the KB number.  The "(KB...)" appears to be
            ' unique.
            firstParen = InStr(thingy, "(KB") 
            lastParen  = InStr(thingy, ")")
            ' The -1 in this line is to exclude the closing paren in (KB...) -- we just want digits
            ' no special characters.
            length = ((lastParen - 1) - firstParen)
            ' Just some debug
            ' WScript.Echo "firstParen: " & firstParen & vbCR & _
            '              "lastParen:  " & lastParen  & vbCR & _
            '              "length:     " & length     & vbCR
            ' Get the KB number by reading the string from the next spot after the first paren to 
            ' the length of the number (because it's not always a fixed length).
             kb = Mid(thingy, firstParen + 1, length)
            ' Create a hash for the kb and name.  A hash is easier to work with
            ' than a 2 dimensional array.  kb is needed for the patch URL.  The name
            ' is needed for what to download once the page is loaded.
             kbAndNameHash.Add kb, thingy
        ' Provides access to the scripting dictionary
        Dim k             : k = kbAndNameHash.Keys
        Dim n             : n = kbAndNameHash.Items
        ' Get the patches
        Dim http       : Set http = CreateObject("WinHttp.WinHttpRequest.5.1")
        Dim partialURL : partialURL = "https://www.catalog.update.microsoft.com/Search.aspx?q="
        Dim webpage, j 
        ' #####
        ' Tried from: https://stackoverflow.com/questions/5292860/click-button-on-webpage-via-vbscript
        Dim objWshShell,IE,searchStr
        Set objWshShell = Wscript.CreateObject("Wscript.Shell")
        Set IE = CreateObject("InternetExplorer.Application")
        ' #####
        For Each key In k
            With http
                .Open "GET", partialURL & key, True
            End With
            ' Load the webpage source into memory.
            webpage = http.ResponseText
            ' Find the postion of the name of the finding.
            j = InStr(webpage, kbAndNameHash.Item(key))
            If http.Status = 200 Then
                If j > 0 Then
                    ' This is where the script no longer works.
                    ' I also tried this:
                    ' http.Document.getElementByID("9ebe5d13-4966-4cdb-a612-9780df621411").Item(0).Click
                    ' #####
                    ' Tried from: https://stackoverflow.com/questions/5292860/click-button-on-webpage-via-vbscript
                    With IE
                        .Visible = True
                        .Navigate partialURL & key
                        Do While .Busy
                        WScript.Sleep 100
                End With
                ' #####
           MsgBox "Did not find a download link for: " & vbCR & vbCR &_
                            kbAndNameHash.Item(key) & vbCR & vbCR &_
                            "Please manually check for " & key, 48, "Patch not found"
                End If
               ' TODO: handle the <>200 status
            End If
        Set http          = NOTHING
        Set kbAndNameHash = NOTHING
    Any assistance on how I can get the Download button which corresponds to the  name of the patch specified would be greatly appreciated!!!


    • Edited by mgoblue0970 Tuesday, July 25, 2017 3:56 PM The HTML and vbs was too hard to read several lines on a single scrollbar when the page changed the fomatting to codeblock
    • Moved by Bill_Stewart Wednesday, September 13, 2017 9:33 PM This is not "fix/debug/rewrite my script for me" forum
    Tuesday, July 25, 2017 3:52 PM

All replies

  • You cannot click that button with script as it is handled by JavaScript in the parent form.  The page was designed to prevent automation.

    You can use the catalog

    See: https://gallery.technet.microsoft.com/scriptcenter/2d191bcd-3308-4edd-9de2-88dff796b0bc


    Tuesday, July 25, 2017 4:10 PM
  • Hi.

    Thanks for the response.

    I'm confused though.  Your post says you can use the catalog... which is what I thought I did... I'm going to:


    Also, the link you provided takes to me to a powershell module download.  What is this download for?


    • Edited by mgoblue0970 Monday, July 31, 2017 5:27 PM spelling error
    Monday, July 31, 2017 5:07 PM
  • The link is to a script module that can download hot fixes.  It is the only method available. 

    You cannot automate clicking a button or link in a web dialog.


    • Edited by jrv Monday, July 31, 2017 5:11 PM
    Monday, July 31, 2017 5:10 PM