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buttercheese

Block CTL+ALT+DEL

15 posts in this topic

Hello together,

sorry, couldn´t find the needed info searching the forum.

I want to block CTL+ALT+DEL while my kiosk-application is running. Is there any way to disable CTL+ALT+DEL and re-enable, when the application is done?

Thanks in advice

buttercheese

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You can use this cool idea ..

#36658

(( thanks to Ezzetabi and Cyberslug ))

:)

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Oops :"> .. according to the helpfile (see HotKeySet) .. this won't work for ALT+CTRL+DEL!

Sorry!

:)

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Hello again,

I found the following software, that can do the job:

http://www.phord.com/keyblock.html

You can disable and reactivate CTRL-ALT-DEL without reboot.

I wonder, if some of you code-gurus will be able to give us the autoit-way to do more or less the same. :)

best wishes

buttercheese

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I hope not. Way too dangerous. Just like memory reading and partition managing.

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I hope not. Way too dangerous. Just like memory reading and partition managing.

<{POST_SNAPBACK}>

Pardon?

What´s to dangerous? I posted the link, to show what functionality I (and many others) need.

Would be really very nice to get some code-gurus answer.

buttercheese

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This:

You can disable and reactivate CTRL-ALT-DEL without reboot.

I wonder, if some of you code-gurus will be able to give us the autoit-way to do more or less the same.

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Hi SlimShady,

your answer is more or less no answer for me.

Would you please be so kind, explaining a bit more detailed, where you see the problem?

What will you do, if you should avoid Ctrl-Alt-Del for a Kiosksystem where you need the keyboard?

Thanks in advice

buttercheese

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Would you please be so kind, explaining a bit more detailed, where you see the problem?

AutoIt has been classified as a virus a few times already and adding functionality like this is dangerous because it makes the decision for AV software companies a lot easier to classify AutoIt as a virus again.

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So, if avoiding is more or less not possible, are there any workarounds to make ctrl-alt-del impossible?

(the problem is, that the pupils working with the pc´s are a bigger security problem than everything else ;-))

they should run only one given application (fullscreen)

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p.s. sugi, I run the mentioned keyblocker with active and actual virus-scanner. No problem, no note, nothing happened.

cheers

buttercheese

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One thing you can do for a Kisok, is not disable Ctrl+Alt+Del, just limit what it can do. That's if you are running 2000 or XP. Then you can use a Group Policy to disable things like Change Password, Task Manager, Logoff, Lock Computer, and Shutdown. So if a user press Ctrl+Alt+Del all he can do is Cancel. It may be a good idea to leave the Logoff option enabled, and just setup Autologon. That way if you need to Logon, you can.

Just a suggestion,

Ian


"Blessed be the name of the Lord" - Job 1:21Check out Search IMF

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Here's a Kiosk Script that I have been working on. It's works for my situtation, you may need to change it up a bit for your's. Also it reads two settings from an INI file, so you'll need to create that file, but it's easy...

; kioskwatch3.au3
; March 9, 2004

; Built with AutoIt3
; Starts Internet Explorer in Kiosk Mode and
; prevents any (Ctrl +) HotKeys from being used.

; March 3, 2004: Added Maintenance Mode
; Maintenance Mode starts a Command Prompt
; This is usefull if KioskWatch runs as the Windows Shell

; March 4, 2004: Script now block (Alt + Tab),
; and will close any Pop-up windows

; March 9, 2004: Added the function to check for 2 minutes of Idle Time

; August 30, 2004: Modified the script to get Homepage location from
; the kw3.ini file, and restart IE in Kiosk Mode if it's closed

Global $StartTime

; Read in Maintenance Password
$maintpw = IniRead("C:\kw3.ini", "Settings", "PW", "")
$homepage = IniRead("C:\kw3.ini", "Settings", "Homepage", "")

Call ("StartTimer")

Run("C:\Program Files\Internet Explorer\iexplore.exe -k " & $homepage)
Sleep(500)

AutoItSetOption("WinTitleMatchMode", 2);2 = Any Substring

While 1;Infinite Loop

 ; Restarts IE in Kiosk Mode if necessary
  If Not WinExists(" - Microsoft Internet Explorer") Then
    Run("C:\Program Files\Internet Explorer\iexplore.exe -k " & $homepage)
  EndIf

 ; Handles IdleTime
  $MPos1 = MouseGetPos()
  $CPos1 = WinGetCaretPos()

 ; Handles Hotkeys
  If WinActive(" - Microsoft Internet Explorer") Then
    HotKeySet("!{TAB}", "Block")
    HotKeySet("^h", "Block")
    HotKeySet("^a", "Block")
    HotKeySet("^b", "Block")
    HotKeySet("^c", "Block")
    HotKeySet("^f", "Block")
    HotKeySet("^l", "Block")
    HotKeySet("^n", "Block")
    HotKeySet("^o", "Block")
    HotKeySet("^p", "Block")
    HotKeySet("^s", "Block")
    HotKeySet("^v", "Block")
    HotKeySet("^w", "Block")
    HotKeySet("^x", "Block")
    HotKeySet("^!z", "Maintenance")
  EndIf

 ; Block Pop-ups (The followingn Pop-ups were specific to My.LSUE)
 ;If WinExists("Connect to *****.lsue.edu") Then
 ;  WinClose("Connect to *****.lsue.edu")
 ;EndIf

 ;If WinExists("Microsoft Internet Explorer", "&Yes") Then
 ;  WinActivate("Microsoft Internet Explorer", "&Yes")
 ;  Send("!y")
 ;EndIf

 ; Handles IdleTime (Continued)
  $MPos2 = MouseGetPos()
  $CPos2 = WinGetCaretPos()

  If $MPos1[0] <> $MPos2[0] Then
    Call("StartTimer")
  ElseIf $CPos1[0] <> $CPos2[0] Then
    Call("StartTimer")
  EndIf

  $EndTime = TimerStop($StartTime)

  If $EndTime > 120000 Then;120000 = 2 minutes
    Call("CloseIE")
    Call("StartTimer")
  EndIf

  Sleep(3);Reduces the load this script puts on the CPU time
Wend

Func Block()
EndFunc

Func StartTimer()
  $StartTime = TimerStart()
EndFunc

Func CloseIE()
 ;$title = WinGetTitle(" - Microsoft Internet Explorer")
 ;If $title <> "http://*****.lsue.edu/ - Microsoft Internet Explorer" Then
    Send("!{F4}");Closes the Internet Explorer Window
 ;EndIf
EndFunc

Func Maintenance()
  $Password = InputBox("AutoIt3 - KioskWatch3 Maintenance Mode", "Enter KioskWatch3 Maintenance Mode Password:", "", "*")
  If $Password = $maintpw Then
    $choice = MsgBox(547, "AutoIt3 - KioskWatch3 Maintenance Mode", "Yes - Command Prompt" & @LF & "No - Exit Script" & @LF & "Cancel - Return to Kiosk")
    If $choice = 6 Then
      Run("cmd")
    EndIf
    If $choice = 7 Then
      Exit
    EndIf
    If $choice = 2 Then
    EndIf
  EndIf
EndFunc

"Blessed be the name of the Lord" - Job 1:21Check out Search IMF

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p.s. sugi, I run the mentioned keyblocker with active and actual virus-scanner. No problem, no note, nothing happened.

Because the Keyblocker lacks a lot functionality that AutoIt offers. Just search the forum for "virus" and you should have enough posts explaining the whole problem as this has been discussed several times.

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