1 ;;; pgg-pgp5.el --- PGP 5.* support for PGG.
3 ;; Copyright (C) 1999,2000 Daiki Ueno
5 ;; Author: Daiki Ueno <ueno@ueda.info.waseda.ac.jp>
7 ;; Keywords: PGP, OpenPGP
9 ;; This file is part of SEMI (Secure Emacs MIME Interface).
11 ;; This program is free software; you can redistribute it and/or
12 ;; modify it under the terms of the GNU General Public License as
13 ;; published by the Free Software Foundation; either version 2, or (at
14 ;; your option) any later version.
16 ;; This program is distributed in the hope that it will be useful, but
17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ;; General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24 ;; Boston, MA 02111-1307, USA.
28 (require 'mel) ; binary-to-text-funcall, binary-write-decoded-region
29 (eval-when-compile (require 'pgg))
35 (defcustom pgg-pgp5-pgpe-program "pgpe"
36 "PGP 5.* 'pgpe' executable."
40 (defcustom pgg-pgp5-pgps-program "pgps"
41 "PGP 5.* 'pgps' executable."
45 (defcustom pgg-pgp5-pgpk-program "pgpk"
46 "PGP 5.* 'pgpk' executable."
50 (defcustom pgg-pgp5-pgpv-program "pgpv"
51 "PGP 5.* 'pgpv' executable."
55 (defcustom pgg-pgp5-shell-file-name "/bin/sh"
56 "File name to load inferior shells from.
57 Bourne shell or its equivalent \(not tcsh) is needed for \"2>\"."
61 (defcustom pgg-pgp5-shell-command-switch "-c"
62 "Switch used to have the shell execute its command line argument."
66 (defcustom pgg-pgp5-extra-args nil
67 "Extra arguments for every PGP 5.* invocation."
72 (luna-define-class pgg-scheme-pgp5 (pgg-scheme)))
74 (defvar pgg-pgp5-user-id nil
75 "PGP 5.* ID of your default identity.")
77 (defvar pgg-scheme-pgp5-instance nil)
80 (defun pgg-make-scheme-pgp5 ()
81 (or pgg-scheme-pgp5-instance
82 (setq pgg-scheme-pgp5-instance
83 (luna-make-entity 'pgg-scheme-pgp5))))
85 (defun pgg-pgp5-process-region (start end passphrase program args)
86 (let* ((errors-file-name (make-temp-file "pgg-errors"))
90 (list (concat "2>" errors-file-name))))
91 (shell-file-name pgg-pgp5-shell-file-name)
92 (shell-command-switch pgg-pgp5-shell-command-switch)
93 (process-environment process-environment)
94 (output-buffer pgg-output-buffer)
95 (errors-buffer pgg-errors-buffer)
96 (process-connection-type nil)
97 process status exit-status)
98 (with-current-buffer (get-buffer-create output-buffer)
102 (setenv "PGPPASSFD" "0"))
106 (apply #'binary-funcall
107 #'start-process-shell-command "*PGP*" output-buffer
109 (set-process-sentinel process #'ignore)
111 (process-send-string process (concat passphrase "\n")))
112 (process-send-region process start end)
113 (process-send-eof process)
114 (while (eq 'run (process-status process))
115 (accept-process-output process 5))
116 (setq status (process-status process)
117 exit-status (process-exit-status process))
118 (delete-process process)
119 (with-current-buffer output-buffer
120 (pgg-convert-lbt-region (point-min)(point-max) 'LF)
122 (if (memq status '(stop signal))
123 (error "%s exited abnormally: '%s'" program exit-status))
124 (if (= 127 exit-status)
125 (error "%s could not be found" program))
127 (set-buffer (get-buffer-create errors-buffer))
128 (buffer-disable-undo)
130 (insert-file-contents errors-file-name)))
131 (if (and process (eq 'run (process-status process)))
132 (interrupt-process process))
134 (delete-file errors-file-name)
137 (luna-define-method pgg-scheme-lookup-key ((scheme pgg-scheme-pgp5)
138 string &optional type)
139 (let ((args (list "+language=en" "-l" string)))
140 (with-current-buffer (get-buffer-create pgg-output-buffer)
141 (buffer-disable-undo)
143 (apply #'call-process pgg-pgp5-pgpk-program nil t nil args)
144 (goto-char (point-min))
145 (when (re-search-forward "^sec" nil t)
148 (buffer-substring (match-end 0)(progn (end-of-line)(point)))))
151 (luna-define-method pgg-scheme-encrypt-region ((scheme pgg-scheme-pgp5)
152 start end recipients)
153 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
155 `("+NoBatchInvalidKeys=off" "-fat" "+batchmode=1"
158 (mapcar (lambda (rcpt)
160 (concat "\"" rcpt "\"")))
162 (if pgg-encrypt-for-me
163 (list pgg-pgp5-user-id)))))))))
164 (pgg-pgp5-process-region start end nil pgg-pgp5-pgpe-program args)
165 (pgg-process-when-success nil)))
167 (luna-define-method pgg-scheme-decrypt-region ((scheme pgg-scheme-pgp5)
169 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
172 (format "PGP passphrase for %s: " pgg-pgp5-user-id)
173 (pgg-scheme-lookup-key scheme pgg-pgp5-user-id 'encrypt)))
175 '("+verbose=1" "+batchmode=1" "+language=us" "-f")))
176 (pgg-pgp5-process-region start end passphrase pgg-pgp5-pgpv-program args)
177 (pgg-process-when-success nil)))
179 (luna-define-method pgg-scheme-sign-region ((scheme pgg-scheme-pgp5)
180 start end &optional clearsign)
181 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
184 (format "PGP passphrase for %s: " pgg-pgp5-user-id)
185 (pgg-scheme-lookup-key scheme pgg-pgp5-user-id 'sign)))
187 (list (if clearsign "-fat" "-fbat")
188 "+verbose=1" "+language=us" "+batchmode=1"
189 "-u" pgg-pgp5-user-id)))
190 (pgg-pgp5-process-region start end passphrase pgg-pgp5-pgps-program args)
191 (pgg-process-when-success
192 (when (re-search-forward "^-+BEGIN PGP SIGNATURE" nil t);XXX
194 (cdr (assq 2 (pgg-parse-armor-region
195 (progn (beginning-of-line 2)
198 (if pgg-cache-passphrase
199 (pgg-add-passphrase-cache
200 (cdr (assq 'key-identifier packet))
203 (luna-define-method pgg-scheme-verify-region ((scheme pgg-scheme-pgp5)
204 start end &optional signature)
205 (let* ((orig-file (make-temp-file "pgg"))
206 (args '("+verbose=1" "+batchmode=1" "+language=us"))
207 (orig-mode (default-file-modes)))
210 (set-default-file-modes 448)
211 (binary-write-decoded-region start end orig-file))
212 (set-default-file-modes orig-mode))
213 (when (stringp signature)
214 (copy-file signature (setq signature (concat orig-file ".asc")))
215 (setq args (append args (list signature))))
216 (pgg-pgp5-process-region (point)(point) nil pgg-pgp5-pgpv-program args)
217 (delete-file orig-file)
218 (if signature (delete-file signature))
219 (with-current-buffer pgg-errors-buffer
220 (goto-char (point-min))
221 (if (re-search-forward "^Good signature" nil t)
223 (set-buffer pgg-output-buffer)
224 (insert-buffer-substring pgg-errors-buffer)
228 (luna-define-method pgg-scheme-insert-key ((scheme pgg-scheme-pgp5))
229 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
231 (list "+verbose=1" "+batchmode=1" "+language=us" "-x"
232 (concat "\"" pgg-pgp5-user-id "\""))))
233 (pgg-pgp5-process-region (point)(point) nil pgg-pgp5-pgpk-program args)
234 (insert-buffer-substring pgg-output-buffer)))
236 (luna-define-method pgg-scheme-snarf-keys-region ((scheme pgg-scheme-pgp5)
238 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
239 (key-file (make-temp-file "pgg"))
241 (list "+verbose=1" "+batchmode=1" "+language=us" "-a"
243 (let ((coding-system-for-write 'raw-text-dos))
244 (write-region start end key-file))
245 (pgg-pgp5-process-region start end nil pgg-pgp5-pgpk-program args)
246 (delete-file key-file)
247 (pgg-process-when-success nil)))
251 ;;; pgg-pgp5.el ends here