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;;; gh-auth.el --- authentication for gh.el
;; Copyright (C) 2011 Yann Hodique
;; Author: Yann Hodique <yann.hodique@gmail.com>
;; Keywords:
;; 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 2, 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.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;;
;;; Code:
(require 'eieio)
(require 'gh-common)
(defgroup gh-auth nil
"Github authentication."
:group 'gh)
(defvar gh-auth-username nil)
(defvar gh-auth-password nil)
(defvar gh-auth-oauth-token nil)
(defun gh-auth-get-username ()
(let ((user (or gh-auth-username
(setq gh-auth-username (gh-config "user")))))
(when (not user)
(setq user (read-string "GitHub username: "))
(setq gh-auth-username user)
(gh-set-config "user" user))
user))
(defun gh-auth-get-password (remember)
(let ((pass (or gh-auth-password
(setq gh-auth-password (gh-config "password")))))
(when (not pass)
(setq pass (read-passwd "GitHub password: "))
(when remember
(setq gh-auth-password pass)
(gh-set-config "password" pass)))
pass))
(declare-function 'gh-oauth-auth-new "gh-oauth")
(defun gh-auth-get-oauth-token ()
(let ((token (or gh-auth-oauth-token
(setq gh-auth-oauth-token (gh-config "token")))))
(when (not token)
(let* ((api (make-instance 'gh-oauth-api))
(tok (and (fboundp 'gh-oauth-auth-new)
(oref (oref (funcall 'gh-oauth-auth-new api
'(user repo gist)) :data)
:token))))
(setq token (or tok (read-string "GitHub OAuth token: ")))
(setq gh-auth-oauth-token token)
(gh-set-config "token" token)))
token))
;;;###autoload
(defclass gh-authenticator ()
((username :initarg :username :initform nil))
"Abstract authenticator")
(defmethod constructor :static ((auth gh-authenticator) newname &rest args)
(let ((obj (call-next-method)))
(or (oref obj :username)
(oset obj :username (gh-auth-get-username)))
obj))
;;;###autoload
(defclass gh-password-authenticator (gh-authenticator)
((password :initarg :password :protection :private :initform nil)
(remember :allocation :class :initform t))
"Password-based authenticator")
(defmethod constructor :static ((auth gh-password-authenticator) newname &rest args)
(let ((obj (call-next-method)))
(or (oref obj :password)
(oset obj :password (gh-auth-get-password (oref obj remember))))
obj))
(defmethod gh-auth-modify-request ((auth gh-authenticator) req))
(defmethod gh-auth-modify-request ((auth gh-password-authenticator) req)
(object-add-to-list req :headers
(cons "Authorization"
(concat "Basic "
(base64-encode-string
(format "%s:%s" (oref auth :username)
(encode-coding-string
(oref auth :password) 'utf-8))))))
req)
;;;###autoload
(defclass gh-oauth-authenticator (gh-authenticator)
((token :initarg :token :protection :private :initform nil))
"Oauth-based authenticator")
(defmethod constructor :static ((auth gh-oauth-authenticator) newname &rest args)
(let ((obj (call-next-method)))
(or (oref obj :token)
(oset obj :token (gh-auth-get-oauth-token)))
obj))
(defmethod gh-auth-modify-request ((auth gh-oauth-authenticator) req)
(object-add-to-list req :headers
(cons "Authorization"
(format "token %s" (oref auth :token))))
req)
(provide 'gh-auth)
;; to avoid circular dependencies...
(require 'gh-oauth)
;;; gh-auth.el ends here
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