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Editorial Team
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Asked: 2026-05-24T03:29:50+00:00

I’m using Network Security Services for Java (JSS) by Mozilla in my applet in

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I’m using Network Security Services for Java (JSS) by Mozilla in my applet in order to allow some low-level interaction between my (signed) Java Applet and Mozilla Firefox.

One of the first problem I’m facing is how to find the current Firefox profile path. I need it because I have to call the initialize(String configDir) method of CryptoManager, and the so-called configDir has to be the directory of a Firefox profile.

How can I grab the full path of the current Firefox profile? Is there a clean way or I have to go reading profiles.ini in {$APPDATA}/Firefox, parse it and then choose a random profile (hoping it’s only one, or the one I get is the correct one)?

Thanks in advance

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1 Answer

  1. Editorial Team

    In Javascript you can obtain profile and Executable directory:

    netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');

var profile = Components.classes["@mozilla.org/file/directory_service;1"].getService(Components.interfaces.nsIProperties).get("ProfD", Components.interfaces.nsIFile).path

var CurProcD = Components.classes["@mozilla.org/file/directory_service;1"].getService(Components.interfaces.nsIProperties).get("CurProcD", Components.interfaces.nsIFile).path
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