/usr/share/emacs/site-lisp/easypg/epg-config.el is in easypg 0.0.16-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | ;;; epg-config.el --- configuration of the EasyPG Library
;; Copyright (C) 2006 Daiki Ueno
;; Author: Daiki Ueno <ueno@unixuser.org>
;; Keywords: PGP, GnuPG
;; This file is part of EasyPG.
;; This program 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 program 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., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Code:
(require 'epg-package-info)
(defgroup epg ()
"The EasyPG Library"
:group 'emacs)
(defcustom epg-gpg-program "gpg"
"The `gpg' executable."
:group 'epg
:type 'string)
(defcustom epg-gpgsm-program "gpgsm"
"The `gpgsm' executable."
:group 'epg
:type 'string)
(defcustom epg-gpg-home-directory nil
"The directory which contains the configuration files of `epg-gpg-program'."
:group 'epg
:type '(choice (const :tag "Default" nil) directory))
(defcustom epg-passphrase-coding-system nil
"Coding system to use with messages from `epg-gpg-program'."
:group 'epg
:type 'symbol)
(defcustom epg-debug nil
"If non-nil, debug output goes to the \" *epg-debug*\" buffer.
Note that the buffer name starts with a space."
:group 'epg
:type 'boolean)
(defconst epg-gpg-minimum-version "1.4.3")
;;;###autoload
(defun epg-configuration ()
"Return a list of internal configuration parameters of `epg-gpg-program'."
(let (config groups type args)
(with-temp-buffer
(apply #'call-process epg-gpg-program nil (list t nil) nil
(append (if epg-gpg-home-directory
(list "--homedir" epg-gpg-home-directory))
'("--with-colons" "--list-config")))
(goto-char (point-min))
(while (re-search-forward "^cfg:\\([^:]+\\):\\(.*\\)" nil t)
(setq type (intern (match-string 1))
args (match-string 2))
(cond
((eq type 'group)
(if (string-match "\\`\\([^:]+\\):" args)
(setq groups
(cons (cons (downcase (match-string 1 args))
(delete "" (split-string
(substring args
(match-end 0))
";")))
groups))
(if epg-debug
(message "Invalid group configuration: %S" args))))
((memq type '(pubkey cipher digest compress))
(if (string-match "\\`\\([0-9]+\\)\\(;[0-9]+\\)*" args)
(setq config
(cons (cons type
(mapcar #'string-to-number
(delete "" (split-string args ";"))))
config))
(if epg-debug
(message "Invalid %S algorithm configuration: %S"
type args))))
(t
(setq config (cons (cons type args) config))))))
(if groups
(cons (cons 'groups groups) config)
config)))
(defun epg-config--parse-version (string)
(let ((index 0)
version)
(while (eq index (string-match "\\([0-9]+\\)\\.?" string index))
(setq version (cons (string-to-number (match-string 1 string))
version)
index (match-end 0)))
(nreverse version)))
(defun epg-config--compare-version (v1 v2)
(while (and v1 v2 (= (car v1) (car v2)))
(setq v1 (cdr v1) v2 (cdr v2)))
(- (or (car v1) 0) (or (car v2) 0)))
;;;###autoload
(defun epg-check-configuration (config &optional minimum-version)
"Verify that a sufficient version of GnuPG is installed."
(let ((entry (assq 'version config))
version)
(unless (and entry
(stringp (cdr entry)))
(error "Undetermined version: %S" entry))
(setq version (epg-config--parse-version (cdr entry))
minimum-version (epg-config--parse-version
(or minimum-version
epg-gpg-minimum-version)))
(unless (>= (epg-config--compare-version version minimum-version) 0)
(error "Unsupported version: %s" (cdr entry)))))
;;;###autoload
(defun epg-expand-group (config group)
"Look at CONFIG and try to expand GROUP."
(let ((entry (assq 'groups config)))
(if (and entry
(setq entry (assoc (downcase group) (cdr entry))))
(cdr entry))))
(provide 'epg-config)
;;; epg-config.el ends here
|