Use ELPA (Emacs) behind a proxy requiring authentication

authentication emacs proxy emacs24 elpa
Maksim Zholudev picture Maksim Zholudev · May 28, 2012 · Viewed 15.6k times · Source

I have read this and this question. In both they say Emacs can deal with authentication, but it does not work for me.

The question is: What is wrong?

The Emacs version is 24.0.97-1, and it is running on 64-bit Linux.

At work I have to use proxy server for any Internet connection. So I set the following environment variables:

http_proxy="http://username:password@ip:port
https_proxy="https://username:password@ip:port
ftp_proxy="ftp://username:password@ip:port

This works. I can download packages without any problem.

When I run M-x package-refresh-contents in Emacs it asks me for login and password for the proxy server, but it can not connect to the server. It even does not try to connect, i.e. after I type password and press Enter Emacs instantly reports: Failed to download 'marmalade' archive

The same happens if I remove username and password from http_proxy variable or if I set url-proxy-services in Emacs (even if I unset the system variable).

Answer

gavenkoa picture gavenkoa · Sep 9, 2013

Emacs uses only HOST and PORT part from http_proxy.

I get authorization working without user interaction by:

(setq url-proxy-services
   '(("no_proxy" . "^\\(localhost\\|10.*\\)")
     ("http" . "proxy.com:8080")
     ("https" . "proxy.com:8080")))

(setq url-http-proxy-basic-auth-storage
    (list (list "proxy.com:8080"
                (cons "Input your LDAP UID !"
                      (base64-encode-string "LOGIN:PASSWORD")))))

This works for Emacs 24.3. It is based on non-public API tricks, so might not work is another Emacs versions...

Replace LOGIN and PASSWORD with your auth info...

Also there is url-http-proxy-digest-auth-storage. Just fill prompt with authentication data and check which var used by Emacs (by M-: var RET)...

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