How can I disable the file:// protocol in Firefox?

Question

How to disable file:// protocol in firefox

I want the users not to browse the local files on the machine.

I already disabled SaveAs and OpenFile functions.

I want user not to browse the local files or open it if he know the full path.

Answer 1

University of Waterloo has a page detailing a change to browser.js to disable file, chrome, about, etc. protocols.

That was the first result on Google for "firefox disable file protocol," by the way -- probably would have been the first one if this question wasn't the first result.

Answer 2

I found a way to do this.

First the scenario of our problem is:

• We want client to use a PCs and they have access to firefox only
• No "my computer","cmd",...etc.
• We want them not to browse local files by Firefox , just browsing some sites.
• We want to block file:// protocol that cause browsing of local files.

My suggested solution:

1. Download r-kiosk extension and modify it to run on firefox 3.5.*

2. Modify userPref.js to show the address bar in firefox ---- here we stop Save as,open file,remove extension,no viewsource,but users still browse the localfiles by typing file:///c:/ in url.

3. Modify dirListing.css in Firefox/chrome/classic.jar/skin/classic/(skin name)/dirListing

   body{
              ...
              background-image:url(chrome://global/skin/dirListing/forbidden.png)
       }
   table{
   ...
   display:none;
   }
   

Hide elements like P,H1 by using visiblity:hidden

You can use this image created by me to make it as body background:

Here is the result:

Answer 3

Remember to disable Help, too. Sometimes Help opens backdoors.