1 ;;; pgg-pgp5.el --- PGP 5.* support for PGG.
3 ;; Copyright (C) 1999, 2000, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 ;; Author: Daiki Ueno <ueno@unixuser.org>
8 ;; Keywords: PGP, OpenPGP
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software: you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation, either version 3 of the License, or
16 ;; (at your option) any later version.
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
29 (require 'cl
) ; for pgg macros
36 (defcustom pgg-pgp5-pgpe-program
"pgpe"
37 "PGP 5.* 'pgpe' executable."
41 (defcustom pgg-pgp5-pgps-program
"pgps"
42 "PGP 5.* 'pgps' executable."
46 (defcustom pgg-pgp5-pgpk-program
"pgpk"
47 "PGP 5.* 'pgpk' executable."
51 (defcustom pgg-pgp5-pgpv-program
"pgpv"
52 "PGP 5.* 'pgpv' executable."
56 (defcustom pgg-pgp5-shell-file-name
"/bin/sh"
57 "File name to load inferior shells from.
58 Bourne shell or its equivalent \(not tcsh) is needed for \"2>\"."
62 (defcustom pgg-pgp5-shell-command-switch
"-c"
63 "Switch used to have the shell execute its command line argument."
67 (defcustom pgg-pgp5-extra-args nil
68 "Extra arguments for every PGP 5.* invocation."
71 (const :tag
"None" nil
)
72 (string :tag
"Arguments")))
74 (defvar pgg-pgp5-user-id nil
75 "PGP 5.* ID of your default identity.")
77 (defun pgg-pgp5-process-region (start end passphrase program args
)
78 (let* ((errors-file-name (pgg-make-temp-file "pgg-errors"))
82 (list (concat "2>" errors-file-name
))))
83 (shell-file-name pgg-pgp5-shell-file-name
)
84 (shell-command-switch pgg-pgp5-shell-command-switch
)
85 (process-environment process-environment
)
86 (output-buffer pgg-output-buffer
)
87 (errors-buffer pgg-errors-buffer
)
88 (process-connection-type nil
)
89 process status exit-status
)
90 (with-current-buffer (get-buffer-create output-buffer
)
94 (setenv "PGPPASSFD" "0"))
97 (let ((coding-system-for-read 'binary
)
98 (coding-system-for-write 'binary
))
101 #'start-process-shell-command
"*PGP*" output-buffer
103 (set-process-sentinel process
#'ignore
)
105 (process-send-string process
(concat passphrase
"\n")))
106 (process-send-region process start end
)
107 (process-send-eof process
)
108 (while (eq 'run
(process-status process
))
109 (accept-process-output process
5))
110 (setq status
(process-status process
)
111 exit-status
(process-exit-status process
))
112 (delete-process process
)
113 (with-current-buffer output-buffer
114 (pgg-convert-lbt-region (point-min)(point-max) 'LF
)
116 (if (memq status
'(stop signal
))
117 (error "%s exited abnormally: '%s'" program exit-status
))
118 (if (= 127 exit-status
)
119 (error "%s could not be found" program
))
121 (set-buffer (get-buffer-create errors-buffer
))
122 (buffer-disable-undo)
124 (insert-file-contents errors-file-name
)))
125 (if (and process
(eq 'run
(process-status process
)))
126 (interrupt-process process
))
128 (delete-file errors-file-name
)
131 (defun pgg-pgp5-lookup-key (string &optional type
)
132 "Search keys associated with STRING."
133 (let ((args (list "+language=en" "-l" string
)))
134 (with-current-buffer (get-buffer-create pgg-output-buffer
)
135 (buffer-disable-undo)
137 (apply #'call-process pgg-pgp5-pgpk-program nil t nil args
)
138 (goto-char (point-min))
139 (when (re-search-forward "^sec" nil t
)
142 (buffer-substring (match-end 0)(progn (end-of-line)(point)))))
145 (defun pgg-pgp5-encrypt-region (start end recipients
&optional sign passphrase
)
146 "Encrypt the current region between START and END."
147 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id
))
148 (passphrase (or passphrase
151 (format "PGP passphrase for %s: "
156 `("+NoBatchInvalidKeys=off" "-fat" "+batchmode=1"
157 ,@(if (or recipients pgg-encrypt-for-me
)
159 (mapcar (lambda (rcpt)
161 (concat "\"" rcpt
"\"")))
163 (if pgg-encrypt-for-me
164 (list pgg-pgp5-user-id
)))))))
165 (if sign
'("-s" "-u" pgg-pgp5-user-id
)))))
166 (pgg-pgp5-process-region start end nil pgg-pgp5-pgpe-program args
)
167 (pgg-process-when-success nil
)))
169 (defun pgg-pgp5-decrypt-region (start end
&optional passphrase
)
170 "Decrypt the current region between START and END."
171 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id
))
175 (format "PGP passphrase for %s: " pgg-pgp5-user-id
)
176 (pgg-pgp5-lookup-key pgg-pgp5-user-id
'encrypt
))))
178 '("+verbose=1" "+batchmode=1" "+language=us" "-f")))
179 (pgg-pgp5-process-region start end passphrase pgg-pgp5-pgpv-program args
)
180 (pgg-process-when-success nil
)))
182 (defun pgg-pgp5-sign-region (start end
&optional clearsign passphrase
)
183 "Make detached signature from text between START and END."
184 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id
))
188 (format "PGP passphrase for %s: " pgg-pgp5-user-id
)
189 (pgg-pgp5-lookup-key pgg-pgp5-user-id
'sign
))))
191 (list (if clearsign
"-fat" "-fbat")
192 "+verbose=1" "+language=us" "+batchmode=1"
193 "-u" pgg-pgp5-user-id
)))
194 (pgg-pgp5-process-region start end passphrase pgg-pgp5-pgps-program args
)
195 (pgg-process-when-success
196 (when (re-search-forward "^-+BEGIN PGP SIGNATURE" nil t
);XXX
198 (cdr (assq 2 (pgg-parse-armor-region
199 (progn (beginning-of-line 2)
202 (if pgg-cache-passphrase
203 (pgg-add-passphrase-to-cache
204 (cdr (assq 'key-identifier packet
))
207 (defun pgg-pgp5-verify-region (start end
&optional signature
)
208 "Verify region between START and END as the detached signature SIGNATURE."
209 (let ((orig-file (pgg-make-temp-file "pgg"))
210 (args '("+verbose=1" "+batchmode=1" "+language=us"))
211 (orig-mode (default-file-modes)))
214 (set-default-file-modes 448)
215 (let ((coding-system-for-write 'binary
)
216 jka-compr-compression-info-list jam-zcat-filename-list
)
217 (write-region start end orig-file
)))
218 (set-default-file-modes orig-mode
))
219 (when (stringp signature
)
220 (copy-file signature
(setq signature
(concat orig-file
".asc")))
221 (setq args
(append args
(list signature
))))
222 (pgg-pgp5-process-region (point)(point) nil pgg-pgp5-pgpv-program args
)
223 (delete-file orig-file
)
224 (if signature
(delete-file signature
))
225 (with-current-buffer pgg-errors-buffer
226 (goto-char (point-min))
227 (if (re-search-forward "^Good signature" nil t
)
229 (set-buffer pgg-output-buffer
)
230 (insert-buffer-substring pgg-errors-buffer
)
234 (defun pgg-pgp5-insert-key ()
235 "Insert public key at point."
236 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id
))
238 (list "+verbose=1" "+batchmode=1" "+language=us" "-x"
239 (concat "\"" pgg-pgp5-user-id
"\""))))
240 (pgg-pgp5-process-region (point)(point) nil pgg-pgp5-pgpk-program args
)
241 (insert-buffer-substring pgg-output-buffer
)))
243 (defun pgg-pgp5-snarf-keys-region (start end
)
244 "Add all public keys in region between START and END to the keyring."
245 (let* ((pgg-pgp5-user-id (or pgg-pgp5-user-id pgg-default-user-id
))
246 (key-file (pgg-make-temp-file "pgg"))
248 (list "+verbose=1" "+batchmode=1" "+language=us" "-a"
250 (let ((coding-system-for-write 'raw-text-dos
))
251 (write-region start end key-file
))
252 (pgg-pgp5-process-region start end nil pgg-pgp5-pgpk-program args
)
253 (delete-file key-file
)
254 (pgg-process-when-success nil
)))
258 ;;; pgg-pgp5.el ends here