mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-11 09:20:51 +00:00
114 lines
3.9 KiB
EmacsLisp
114 lines
3.9 KiB
EmacsLisp
;;; epa-hook.el --- preloaded code to enable epa-file.el -*- lexical-binding: t -*-
|
|
;; Copyright (C) 2006-2017 Free Software Foundation, Inc.
|
|
|
|
;; Author: Daiki Ueno <ueno@unixuser.org>
|
|
;; Keywords: PGP, GnuPG
|
|
;; Package: emacs
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs 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.
|
|
|
|
;; GNU Emacs 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. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Code:
|
|
|
|
(defgroup epa-file nil
|
|
"The EasyPG Assistant hooks for transparent file encryption"
|
|
:version "23.1"
|
|
:group 'epa)
|
|
|
|
(defun epa-file--file-name-regexp-set (variable value)
|
|
(set-default variable value)
|
|
(if (fboundp 'epa-file-name-regexp-update)
|
|
(epa-file-name-regexp-update)))
|
|
|
|
(defcustom epa-file-name-regexp (purecopy "\\.gpg\\(~\\|\\.~[0-9]+~\\)?\\'")
|
|
"Regexp which matches filenames to be encrypted with GnuPG.
|
|
|
|
If you set this outside Custom while epa-file is already enabled, you
|
|
have to call `epa-file-name-regexp-update' after setting it to
|
|
properly update file-name-handler-alist. Setting this through Custom
|
|
does that automatically."
|
|
:type 'regexp
|
|
:group 'epa-file
|
|
:set 'epa-file--file-name-regexp-set)
|
|
|
|
(defcustom epa-file-inhibit-auto-save t
|
|
"If non-nil, disable auto-saving when opening an encrypted file."
|
|
:type 'boolean
|
|
:group 'epa-file)
|
|
|
|
(defvar epa-file-encrypt-to nil
|
|
"Recipient(s) used for encrypting files.
|
|
May either be a string or a list of strings.")
|
|
|
|
(put 'epa-file-encrypt-to 'safe-local-variable
|
|
#'(lambda (val)
|
|
(or (stringp val)
|
|
(and (listp val)
|
|
(catch 'safe
|
|
(mapc (lambda (elt)
|
|
(unless (stringp elt)
|
|
(throw 'safe nil)))
|
|
val)
|
|
t)))))
|
|
|
|
(put 'epa-file-encrypt-to 'permanent-local t)
|
|
|
|
(defvar epa-file-handler
|
|
(cons epa-file-name-regexp 'epa-file-handler))
|
|
|
|
(defvar epa-file-auto-mode-alist-entry
|
|
(list epa-file-name-regexp nil 'epa-file))
|
|
|
|
(defun epa-file-name-regexp-update ()
|
|
(interactive)
|
|
(unless (equal (car epa-file-handler) epa-file-name-regexp)
|
|
(setcar epa-file-handler epa-file-name-regexp)))
|
|
|
|
(defun epa-file-find-file-hook ()
|
|
(if (and buffer-file-name
|
|
(string-match epa-file-name-regexp buffer-file-name)
|
|
epa-file-inhibit-auto-save)
|
|
(auto-save-mode 0)))
|
|
|
|
(define-minor-mode auto-encryption-mode
|
|
"Toggle automatic file encryption/decryption (Auto Encryption mode).
|
|
With a prefix argument ARG, enable Auto Encryption mode if ARG is
|
|
positive, and disable it otherwise. If called from Lisp, enable
|
|
the mode if ARG is omitted or nil."
|
|
:global t :init-value t :group 'epa-file :version "23.1"
|
|
;; We'd like to use custom-initialize-set here so the setup is done
|
|
;; before dumping, but at the point where the defcustom is evaluated,
|
|
;; the corresponding function isn't defined yet, so
|
|
;; custom-initialize-set signals an error.
|
|
:initialize 'custom-initialize-delay
|
|
(setq file-name-handler-alist
|
|
(delq epa-file-handler file-name-handler-alist))
|
|
(remove-hook 'find-file-hooks 'epa-file-find-file-hook)
|
|
(setq auto-mode-alist (delq epa-file-auto-mode-alist-entry
|
|
auto-mode-alist))
|
|
(when auto-encryption-mode
|
|
(setq file-name-handler-alist
|
|
(cons epa-file-handler file-name-handler-alist))
|
|
(add-hook 'find-file-hook 'epa-file-find-file-hook)
|
|
(setq auto-mode-alist (cons epa-file-auto-mode-alist-entry
|
|
auto-mode-alist))))
|
|
|
|
(put 'epa-file-handler 'safe-magic t)
|
|
(put 'epa-file-handler 'operations '(write-region insert-file-contents))
|
|
|
|
(provide 'epa-hook)
|
|
|
|
;;; epa-hook.el ends here
|