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 (eval-when-compile (require 'pgg))
34 (defcustom pgg-pgp5-pgpe-program "pgpe"
35 "PGP 5.* 'pgpe' executable."
39 (defcustom pgg-pgp5-pgps-program "pgps"
40 "PGP 5.* 'pgps' executable."
44 (defcustom pgg-pgp5-pgpk-program "pgpk"
45 "PGP 5.* 'pgpk' executable."
49 (defcustom pgg-pgp5-pgpv-program "pgpv"
50 "PGP 5.* 'pgpv' executable."
54 (defcustom pgg-pgp5-shell-file-name "/bin/sh"
55 "File name to load inferior shells from. Bourne shell or its equivalent
56 \(not tcsh) is needed for \"2>\"."
60 (defcustom pgg-pgp5-shell-command-switch "-c"
61 "Switch used to have the shell execute its command line argument."
65 (defcustom pgg-pgp5-extra-args nil
66 "Extra arguments for every PGP invocation."
71 (luna-define-class pgg-scheme-pgp5 (pgg-scheme)))
73 (defvar pgg-pgp5-user-id nil
74 "GnuPG ID of your default identity.")
76 (defvar pgg-scheme-pgp5-instance nil)
79 (defun pgg-make-scheme-pgp5 ()
80 (or pgg-scheme-pgp5-instance
81 (setq pgg-scheme-pgp5-instance
82 (luna-make-entity 'pgg-scheme-pgp5))))
84 (defun pgg-pgp5-process-region (start end passphrase program args)
85 (let* ((errors-file-name
86 (concat temporary-file-directory
87 (make-temp-name "pgg-errors")))
91 (list (concat "2>" errors-file-name))))
92 (shell-file-name pgg-pgp5-shell-file-name)
93 (shell-command-switch pgg-pgp5-shell-command-switch)
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"))
105 (apply #'start-process-shell-command "*PGP*" output-buffer
107 (set-process-sentinel process #'ignore)
109 (process-send-string process (concat passphrase "\n")))
110 (process-send-region process start end)
111 (process-send-eof process)
112 (while (eq 'run (process-status process))
113 (accept-process-output process 5))
114 (setq status (process-status process)
115 exit-status (process-exit-status process))
116 (delete-process process)
117 (with-current-buffer output-buffer
118 (pgg-convert-lbt-region (point-min)(point-max) 'LF)
120 (if (memq status '(stop signal))
121 (error "%s exited abnormally: '%s'" program exit-status))
122 (if (= 127 exit-status)
123 (error "%s could not be found" program))
125 (set-buffer (get-buffer-create errors-buffer))
126 (buffer-disable-undo)
128 (insert-file-contents errors-file-name)
129 (delete-file errors-file-name)
131 (if (and process (eq 'run (process-status process)))
132 (interrupt-process process)))))
134 (luna-define-method pgg-scheme-lookup-key ((scheme pgg-scheme-pgp5)
135 string &optional type)
136 (let ((args (list "+language=en" "-l" string)))
137 (with-current-buffer (get-buffer-create pgg-output-buffer)
138 (buffer-disable-undo)
140 (apply #'call-process pgg-pgp5-pgpk-program nil t nil args)
141 (goto-char (point-min))
142 (when (re-search-forward "^sec" nil t)
145 (buffer-substring (match-end 0)(progn (end-of-line)(point)))))
148 (luna-define-method pgg-scheme-encrypt-region ((scheme pgg-scheme-pgp5)
149 start end recipients)
150 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
152 `("+NoBatchInvalidKeys=off" "-fat" "+batchmode=1"
155 (mapcar (lambda (rcpt)
157 (concat "\"" rcpt "\"")))
159 (if pgg-encrypt-for-me
160 (list pgg-pgp5-user-id)))))))))
161 (pgg-pgp5-process-region start end nil pgg-pgp5-pgpe-program args)
162 (pgg-process-when-success nil)))
164 (luna-define-method pgg-scheme-decrypt-region ((scheme pgg-scheme-pgp5)
166 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
169 (format "PGP passphrase for %s: " pgg-pgp5-user-id)
170 (pgg-scheme-lookup-key scheme pgg-pgp5-user-id 'encrypt)))
172 '("+verbose=1" "+batchmode=1" "+language=us" "-f")))
173 (pgg-pgp5-process-region start end passphrase pgg-pgp5-pgpv-program args)
174 (pgg-process-when-success nil)))
176 (luna-define-method pgg-scheme-sign-region ((scheme pgg-scheme-pgp5)
177 start end &optional clearsign)
178 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
181 (format "PGP passphrase for %s: " pgg-pgp5-user-id)
182 (pgg-scheme-lookup-key scheme pgg-pgp5-user-id 'sign)))
184 (list (if clearsign "-fat" "-fbat")
185 "+verbose=1" "+language=us" "+batchmode=1"
186 "-u" pgg-pgp5-user-id)))
187 (pgg-pgp5-process-region start end passphrase pgg-pgp5-pgps-program args)
188 (pgg-process-when-success
189 (when (re-search-forward "^-+BEGIN PGP SIGNATURE" nil t);XXX
191 (cdr (assq 2 (pgg-parse-armor-region
192 (progn (beginning-of-line 2)
195 (if pgg-cache-passphrase
196 (pgg-add-passphrase-cache
197 (cdr (assq 'key-identifier packet))
200 (luna-define-method pgg-scheme-verify-region ((scheme pgg-scheme-pgp5)
201 start end &optional signature)
202 (let* ((basename (expand-file-name "pgg" temporary-file-directory))
203 (orig-file (make-temp-name basename))
204 (args '("+verbose=1" "+batchmode=1" "+language=us"))
205 (orig-mode (default-file-modes)))
208 (set-default-file-modes 448)
209 (write-region-as-binary start end orig-file))
210 (set-default-file-modes orig-mode))
211 (when (stringp signature)
212 (copy-file signature (setq signature (concat orig-file ".asc")))
213 (setq args (append args (list signature))))
214 (pgg-pgp5-process-region (point)(point) nil pgg-pgp5-pgpv-program args)
215 (delete-file orig-file)
216 (if signature (delete-file signature))
217 (with-current-buffer pgg-errors-buffer
218 (goto-char (point-min))
219 (re-search-forward "^Good signature" nil t))))
221 (luna-define-method pgg-scheme-insert-key ((scheme pgg-scheme-pgp5))
222 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
224 (list "+verbose=1" "+batchmode=1" "+language=us" "-x"
225 (concat "\"" pgg-pgp5-user-id "\""))))
226 (pgg-pgp5-process-region (point)(point) nil pgg-pgp5-pgpk-program args)
227 (insert-buffer-substring pgg-output-buffer)))
229 (luna-define-method pgg-scheme-snarf-keys-region ((scheme pgg-scheme-pgp5)
231 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id))
232 (basename (expand-file-name "pgg" temporary-file-directory))
233 (key-file (make-temp-name basename))
235 (list "+verbose=1" "+batchmode=1" "+language=us" "-a"
237 (write-region-as-raw-text-CRLF start end key-file)
238 (pgg-pgp5-process-region start end nil pgg-pgp5-pgpk-program args)
239 (delete-file key-file)
240 (pgg-process-when-success nil)))
244 ;;; pgg-pgp5.el ends here