Open Bug 1476648 Opened Last year Updated 4 months ago
The user can enter online mode without access to the remote config file
[Affected versions]: - Fx 62.0b9 - Fx 63.0a1 [Affected platforms]: - Windows 10 x64 - Ubuntu 16.04 x64 - macOS 10.14 beta [Preconditions]: 1.Create a file named autoconfig.js in the location: a. "/Applications/Firefox.app/Contents/Resources/defaults/pref/" (Mac) b. "C:\Program Files\Mozilla Firefox\defaults\pref" (Windows) and add the following text to it: // pref("general.config.filename", "firefox.cfg"); pref("general.config.obscure_value", 0); pref("general.config.sandbox_enabled", true); 2.Create a file named autoadmin.js on a remote location and add the following text to it: // lockPref("browser.startup.homepage", "www.google.com"); 3.Create a file named firefox.cfg in the location: a. "/Applications/Firefox.app/Contents/Resources/" (Mac) b. "C:\Program Files\Mozilla Firefox" (Windows) and add the following text in it: // lockPref("autoadmin.failover_to_cached", false); lockPref("autoadmin.global_config_url","http://localhost:8080/autoadmin.js"); [Steps to reproduce]: 1. Launch Firefox (with a fresh profile). 2. Open a new tab and try to navigate to a website (e.g. www.youtube.com). 3. In the displayed page, click the 'Try Again' button. [Expected result]: - The user should be kept in 'Offline mode' and the website shouldn't load. [Actual result]: - The website is loaded, even though the user does not have access to the remote config file, the "Work Offline" is no longer checked but it is still grayed out. [Notes]: - Restarting Firefox by closing and opening it again will launch it again in "Offline mode".
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