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;;; keychain-environment.el --- load keychain environment variables
;; Copyright (C) 2011-2016 Jonas Bernoulli
;; Copyright (C) 2008-2011 Paul Tipper
;; Author: Paul Tipper <bluefoo at googlemail dot com>
;; Maintainer: Jonas Bernoulli <jonas@bernoul.li>
;; Created: 20081218
;; Homepage: https://github.com/tarsius/keychain-environment
;; Keywords: gnupg, pgp, ssh
;; This file is not part of GNU Emacs.
;; This file is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; This file is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; For a full copy of the GNU General Public License
;; see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Keychain is a script that manages ssh-agent and gpg-agent. It is
;; typically run from the shell's initialization file. It allows your
;; shells and cron jobs to share a single ssh-agent and/or gpg-agent.
;; When keychain is run, it checks for running agent, otherwise it
;; starts them. It saves the agents' environment variables to files
;; inside ~/.keychain/, so that subsequent shells can source these
;; files.
;; When Emacs is started under X11 and not directly from a terminal
;; these variables are not set. This library looks for these files
;; created by keychain and then sets Emacs' environment variables
;; accordingly. It does not actually run keychain, so you still
;; have to run that from a login shell first.
;; To use run the function `keychain-refresh-environment' in your
;; init file. If keychain has not been run yet when you start Emacs
;; you can also later call that function interactively.
;; Also see: http://www.funtoo.org/wiki/Keychain
;;; Code:
;;;###autoload
(defun keychain-refresh-environment ()
"Set ssh-agent and gpg-agent environment variables.
Set the environment variables `SSH_AUTH_SOCK', `SSH_AGENT_PID'
and `GPG_AGENT' in Emacs' `process-environment' according to
information retrieved from files created by the keychain script."
(interactive)
(let* ((ssh (shell-command-to-string "keychain -q --noask --agents ssh --eval"))
(gpg (shell-command-to-string "keychain -q --noask --agents gpg --eval")))
(list (and ssh
(string-match "SSH_AUTH_SOCK[=\s]\\([^\s;\n]*\\)" ssh)
(setenv "SSH_AUTH_SOCK" (match-string 1 ssh)))
(and ssh
(string-match "SSH_AGENT_PID[=\s]\\([0-9]*\\)?" ssh)
(setenv "SSH_AGENT_PID" (match-string 1 ssh)))
(and gpg
(string-match "GPG_AGENT_INFO[=\s]\\([^\s;\n]*\\)" gpg)
(setenv "GPG_AGENT_INFO" (match-string 1 gpg))))))
(provide 'setup-keychain-environment)
;; Local Variables:
;; indent-tabs-mode: nil
;; End:
;;; setup-keychain-environment.el ends here
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