How to get Basic Authentication Information in a Firefox Extension?

Question

I'm coding a Firefox extension and want to get Basic Authentication information for a website (or for the current document).

How can I get Basic Authentication Information in a Firefox Extension?

Answer 1

I couldn't find an exact answer and don't have time to experiment now, but it seems that the only way is to manually examine headers using NsIHttpChannel.

EDIT: Ok, I've found nsIHttpAuthManager:

This service provides access to cached HTTP authentication user credentials (domain, username, password) for sites visited during the current browser session.

Looks like exactly what you need.

Answer 2

Here is some sample code for using nsIHttpAuthManager:

Instantiate the component:

var proxyAuthenticationComponent = Components.classes["@mozilla.org/network/http-auth-manager;1"].getService(Components.interfaces.nsIHttpAuthManager);

Set the information:

proxyAuthenticationComponent.setAuthIdentity('http','192.168.0.1',80,"basic","Some Realm","","","username","password");

Get the information:

var domain = {}; //Will contain {value: ""}
var username = {}; //Will contain {value: "username"}
var password = {}; //Will contain {value: "password"}
proxyAuthenticationComponent.getAuthIdentity('http','192.168.0.1',80,"basic","Some Realm","",domain,username,password);

I used this in a Thunderbird extension. Hope this help.