/usr/share/emacs/site-lisp/mew/mew-passwd.el is in mew-beta 7.0.50~6.5+0.20140128-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 | ;;; mew-passwd.el
;; Author: Kazu Yamamoto <Kazu@Mew.org>
;; Created: May 23, 2006
;;; Code:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Variables
;;;
(defvar mew-prog-passwd "gpg")
(defvar mew-passwd-file ".mew-passwd.gpg")
(defvar mew-passwd-cipher "AES")
(defvar mew-passwd-repeat 3)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Internal variables
;;;
(defvar mew-passwd-encryption-name "GPG Encryption")
(defvar mew-passwd-decryption-name "GPG Decryption")
(defvar mew-passwd-master nil)
(defvar mew-passwd-alist nil)
(defvar mew-passwd-timer-id nil)
(defvar mew-passwd-rendezvous nil)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; External functions
;;;
(defun mew-passwd-get-passwd (key)
(nth 1 (assoc key mew-passwd-alist)))
(defun mew-passwd-set-passwd (key val)
(if (assoc key mew-passwd-alist)
(setcar (nthcdr 1 (assoc key mew-passwd-alist)) val)
(setq mew-passwd-alist (cons (list key val 0) mew-passwd-alist))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Functions
;;;
(defun mew-passwd-get-counter (key)
(nth 2 (assoc key mew-passwd-alist)))
(defun mew-passwd-set-counter (key val)
(if (assoc key mew-passwd-alist)
(setcar (nthcdr 2 (assoc key mew-passwd-alist)) val)))
(defun mew-passwd-get-keys ()
(mapcar 'car mew-passwd-alist))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Setup and cleanup
;;;
(defun mew-passwd-setup ()
(when (and mew-use-cached-passwd (not mew-use-master-passwd))
(if mew-passwd-timer-id (cancel-timer mew-passwd-timer-id))
(setq mew-passwd-timer-id
(mew-timer (* mew-passwd-timer-unit 60) 'mew-passwd-timer))))
(defun mew-passwd-setup-master ()
(when (and (not mew-passwd-master)
mew-use-master-passwd (eq mew-pgp-ver 3))
(let ((file (expand-file-name mew-passwd-file mew-conf-path)))
(if (file-exists-p file)
(setq mew-passwd-alist (mew-passwd-load))
;; save nil and ask master twice
(mew-passwd-save)))
(add-hook 'kill-emacs-hook 'mew-passwd-clean-up)))
(defun mew-passwd-clean-up ()
(remove-hook 'kill-emacs-hook 'mew-passwd-clean-up)
(when mew-passwd-master
(mew-passwd-save))
(setq mew-passwd-master nil)
(when (and mew-use-cached-passwd (not mew-use-master-passwd))
(setq mew-passwd-alist nil)
(if mew-passwd-timer-id (cancel-timer mew-passwd-timer-id))
(setq mew-passwd-timer-id nil)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Timer
;;;
(defun mew-passwd-timer ()
(let ((keys (mew-passwd-get-keys)))
(dolist (key keys)
(if (< (mew-passwd-get-counter key) mew-passwd-lifetime)
(mew-passwd-set-counter key (1+ (mew-passwd-get-counter key)))
;; time out
(mew-passwd-set-passwd key nil)
(mew-passwd-set-counter key 0)))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Input
;;;
(defun mew-input-passwd (prompt key)
(if (and key (or mew-use-cached-passwd mew-use-master-passwd))
(progn
(mew-passwd-setup-master)
(if (mew-passwd-get-passwd key)
(progn
(mew-timing)
(if mew-passwd-reset-timer (mew-passwd-set-counter key 0))
(mew-passwd-get-passwd key))
(let ((pass (mew-read-passwd prompt)))
(mew-passwd-set-passwd key pass)
(mew-passwd-set-counter key 0)
pass)))
(mew-read-passwd prompt)))
(defun mew-read-passwd (prompt)
(let ((inhibit-input-event-recording t)
;; A process filter sets inhibit-quit to t to prevent quitting.
;; Set inhibit-quit to nil so that C-g can be used
(inhibit-quit nil))
(condition-case nil
(read-passwd prompt)
;; If read-passwd causes an error, let's return "" so that
;; the password process will safely fail.
(quit "")
(error ""))))
(defun mew-passwd-read-passwd (prompt &optional encrypt-p)
(if mew-passwd-master
(progn
(mew-timing)
mew-passwd-master)
(let ((pass (mew-read-passwd prompt)))
(if (not encrypt-p)
(setq mew-passwd-master pass))
pass)))
(defun mew-passwd-change ()
"Change the master password."
(interactive)
(setq mew-passwd-master nil)
(mew-passwd-save))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Load and save
;;;
(defmacro mew-passwd-rendezvous ()
`(let ((inhibit-quit t))
(setq mew-passwd-rendezvous t)
(while mew-passwd-rendezvous
(sit-for 0.1)
;; accept-process-output or sleep-for is not enough
(discard-input)
(if quit-flag (setq mew-passwd-rendezvous nil)))))
(defun mew-passwd-load ()
(let ((process-connection-type mew-connection-type2)
(file (expand-file-name mew-passwd-file mew-conf-path))
(tfile (mew-make-temp-name "gpg-load"))
(N mew-passwd-repeat)
pwds pro)
(unwind-protect
(with-temp-buffer
(catch 'loop
(dotimes (i N)
(setq pro (mew-start-process-lang
mew-passwd-decryption-name (current-buffer) mew-prog-passwd
"-d" "--yes" "--output" tfile file))
(set-process-filter pro 'mew-passwd-filter)
(set-process-sentinel pro 'mew-passwd-sentinel)
(mew-passwd-rendezvous)
(unless (file-exists-p tfile)
(setq mew-passwd-master nil))
(when mew-passwd-master
(let ((coding-system-for-read 'undecided))
(insert-file-contents tfile))
(condition-case nil
(setq pwds (read (current-buffer)))
(error ()))
(throw 'loop nil)))
(message "Master password is wrong!")
(mew-let-user-read)))
(mew-passwd-delete-file tfile))
pwds))
(defun mew-passwd-save ()
(let ((process-connection-type mew-connection-type2)
(file (expand-file-name mew-passwd-file mew-conf-path))
(tfile (mew-make-temp-name "gpg-save"))
(N mew-passwd-repeat)
pro)
(if (file-exists-p file)
(rename-file file (concat file mew-backup-suffix) 'override))
(unwind-protect
(with-temp-buffer
(pp mew-passwd-alist (current-buffer))
(write-region (point-min) (point-max) tfile nil 'no-msg)
(catch 'loop
(dotimes (i N)
(setq pro (mew-start-process-lang
mew-passwd-encryption-name (current-buffer) mew-prog-passwd
"-c" "--cipher-algo" mew-passwd-cipher
"--yes" "--output" file tfile))
(set-process-filter pro 'mew-passwd-filter)
(set-process-sentinel pro 'mew-passwd-sentinel)
(mew-passwd-rendezvous)
(if (file-exists-p file) (throw 'loop nil)))
(message "Master password is wrong! Passwords not saved")
(mew-let-user-read)))
(unless (file-exists-p file)
(rename-file (concat file mew-backup-suffix) file))
(mew-passwd-delete-file tfile))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Filter and sentinel
;;;
(defun mew-passwd-filter (process string)
(let* ((name (process-name process))
(regex (concat "^" (regexp-quote mew-passwd-encryption-name)))
(encrypt-p (string-match regex name)))
(with-current-buffer (process-buffer process)
(cond
((string-match "invalid passphrase" string)
(mew-warn "Master password mismatch!")
(setq mew-passwd-master nil))
((string-match "[bB]ad \\(?:session \\)?key" string)
(mew-warn "Master password is wrong!")
(setq mew-passwd-master nil))
((string-match "Enter passphrase:" string)
(process-send-string process (mew-passwd-read-passwd (if encrypt-p "New master password: " "Master password: ") encrypt-p))
(process-send-string process "\n"))
((string-match "Repeat passphrase:" string)
(process-send-string process (mew-passwd-read-passwd "New master password again: "))
(process-send-string process "\n"))
((string-match "exiting" string)
(setq mew-passwd-rendezvous nil))))))
(defun mew-passwd-sentinel (process event)
(setq mew-passwd-rendezvous nil))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Sub functions
;;;
(defun mew-passwd-delete-file (file)
(when (file-exists-p file)
(with-temp-buffer
(let ((coding-system-for-write 'binary)
(size (mew-file-get-size file)))
(dotimes (i size)
(insert 0))
(write-region (point-min) (point-max) file nil 'no-msg)))
(delete-file file)))
(provide 'mew-passwd)
;;; Copyright Notice:
;; Copyright (C) 1996-2012 Mew developing team.
;; All rights reserved.
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions
;; are met:
;;
;; 1. Redistributions of source code must retain the above copyright
;; notice, this list of conditions and the following disclaimer.
;; 2. Redistributions in binary form must reproduce the above copyright
;; notice, this list of conditions and the following disclaimer in the
;; documentation and/or other materials provided with the distribution.
;; 3. Neither the name of the team nor the names of its contributors
;; may be used to endorse or promote products derived from this software
;; without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE TEAM AND CONTRIBUTORS ``AS IS'' AND
;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
;; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE TEAM OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
;; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
;; OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
;; IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;; mew-passwd.el ends here
|