637052 - Redirect Local Html File to HTTPS

Status: UNCONFIRMED

(Firefox :: General, defect)

Description

[Ross Lombardi]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b13pre) Gecko/20110226 Firefox/4.0b13pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b13pre) Gecko/20110226 Firefox/4.0b13pre

I had a page saved in C:\Stuff\. Opening it in Firefox greets me with the following error:

Server not found. Firefox can't find the server at c.

Quick inspection of the address bar reveals the problem: "https://c/Stuff/file.html"

After trying to figure out if it's a Firefox issue or Windows issue, looking at the page contents shows why Firefox insists on trying to redirect a local file to https:

if(window.location.protocol!="https:") {
	if(window.location.replace) {
		window.location.replace("https"+window.location.href.substr(4));
	}
	else {
		window.location.href="https"+window.location.href.substr(4)
	}
}

As soon as I removed this code the page was fine.

If this happens to a non-technical user it's likely they'll think their computer is broken and won't know what to do.


Reproducible: Always

Steps to Reproduce:
1. Save a website locally that wants to force itself to use HTTPS by changing the URL with Javascript.
2. Open the page locally.

Actual Results:  
Firefox complies with the Javascript and attempts to re-open the local page using HTTPS.

Expected Results:  
The Javascript redirect should probably be ignored if going from file://someaddress to https://thesamesomeaddress.