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;;; mastodon-auth.el --- Auth functions for mastodon.el -*- lexical-binding: t -*-
;; Copyright (C) 2017 Johnson Denen
;; Author: Johnson Denen <johnson.denen@gmail.com>
;; Version: 0.7.1
;; Homepage: https://github.com/jdenen/mastodon.el
;; Package-Requires: ((emacs "24.4"))
;; This file is not part of GNU Emacs.
;; This file is part of mastodon.el.
;; mastodon.el 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 of the License, or
;; (at your option) any later version.
;; mastodon.el 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 mastodon.el. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; mastodon-auth.el supports authorizing and authenticating with Mastodon.
;;; Code:
(require 'plstore)
(autoload 'mastodon-client "mastodon-client")
(autoload 'mastodon-http--post "mastodon-http")
(defvar mastodon-instance-url)
(defgroup mastodon-auth nil
"Authenticate with Mastodon."
:prefix "mastodon-auth-"
:group 'mastodon)
(defvar mastodon-auth--token-alist nil
"Alist of User access tokens keyed by instance url.")
(defun mastodon-auth--generate-token ()
"Make POST to generate auth token."
(mastodon-http--post
(concat mastodon-instance-url "/oauth/token")
`(("client_id" . ,(plist-get (mastodon-client) :client_id))
("client_secret" . ,(plist-get (mastodon-client) :client_secret))
("grant_type" . "password")
("username" . ,(read-string "Email: "))
("password" . ,(read-passwd "Password: "))
("scope" . "read write follow"))
nil
:unauthenticated))
(defun mastodon-auth--get-token ()
"Make auth token request and return JSON response."
(with-current-buffer (mastodon-auth--generate-token)
(goto-char (point-min))
(re-search-forward "^$" nil 'move)
(let ((json-object-type 'plist)
(json-key-type 'keyword)
(json-array-type 'vector)
(json-string (buffer-substring-no-properties (point) (point-max))))
(json-read-from-string json-string))))
(defun mastodon-auth--access-token ()
"Return the access token to use with the current `mastodon-instance-url'.
Generate token and set if none known yet."
(let ((token
(cdr (assoc mastodon-instance-url mastodon-auth--token-alist))))
(unless token
(let ((json (mastodon-auth--get-token)))
(setq token (plist-get json :access_token))
(push (cons mastodon-instance-url token) mastodon-auth--token-alist)))
token))
(provide 'mastodon-auth)
;;; mastodon-auth.el ends here
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