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
|
;;; pgg-pgp.el --- PGP 2.* and 6.* support for PGG.
;; Copyright (C) 1999, 2000, 2002, 2003, 2004,
;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
;; Author: Daiki Ueno <ueno@unixuser.org>
;; Created: 1999/11/02
;; Keywords: PGP, OpenPGP
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3, or (at your option)
;; any later version.
;; GNU Emacs 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:
(eval-when-compile
(require 'cl) ; for pgg macros
(require 'pgg))
(defgroup pgg-pgp ()
"PGP 2.* and 6.* interface."
:group 'pgg)
(defcustom pgg-pgp-program "pgp"
"PGP 2.* and 6.* executable."
:group 'pgg-pgp
:type 'string)
(defcustom pgg-pgp-shell-file-name "/bin/sh"
"File name to load inferior shells from.
Bourne shell or its equivalent \(not tcsh) is needed for \"2>\"."
:group 'pgg-pgp
:type 'string)
(defcustom pgg-pgp-shell-command-switch "-c"
"Switch used to have the shell execute its command line argument."
:group 'pgg-pgp
:type 'string)
(defcustom pgg-pgp-extra-args nil
"Extra arguments for every PGP invocation."
:group 'pgg-pgp
:type '(choice
(const :tag "None" nil)
(string :tag "Arguments")))
(defvar pgg-pgp-user-id nil
"PGP ID of your default identity.")
(defun pgg-pgp-process-region (start end passphrase program args)
(let* ((errors-file-name (pgg-make-temp-file "pgg-errors"))
(args
(concat args
pgg-pgp-extra-args
" 2>" (shell-quote-argument errors-file-name)))
(shell-file-name pgg-pgp-shell-file-name)
(shell-command-switch pgg-pgp-shell-command-switch)
(process-environment process-environment)
(output-buffer pgg-output-buffer)
(errors-buffer pgg-errors-buffer)
(process-connection-type nil)
process status exit-status)
(with-current-buffer (get-buffer-create output-buffer)
(buffer-disable-undo)
(erase-buffer))
(when passphrase
(setenv "PGPPASSFD" "0"))
(unwind-protect
(progn
(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary))
(setq process
(start-process-shell-command "*PGP*" output-buffer
(concat program " " args))))
(set-process-sentinel process #'ignore)
(when passphrase
(process-send-string process (concat passphrase "\n")))
(process-send-region process start end)
(process-send-eof process)
(while (eq 'run (process-status process))
(accept-process-output process 5))
(setq status (process-status process)
exit-status (process-exit-status process))
(delete-process process)
(with-current-buffer output-buffer
(pgg-convert-lbt-region (point-min)(point-max) 'LF)
(if (memq status '(stop signal))
(error "%s exited abnormally: '%s'" program exit-status))
(if (= 127 exit-status)
(error "%s could not be found" program))
(set-buffer (get-buffer-create errors-buffer))
(buffer-disable-undo)
(erase-buffer)
(insert-file-contents errors-file-name)))
(if (and process (eq 'run (process-status process)))
(interrupt-process process))
(condition-case nil
(delete-file errors-file-name)
(file-error nil)))))
(defun pgg-pgp-lookup-key (string &optional type)
"Search keys associated with STRING."
(let ((args (list "+batchmode" "+language=en" "-kv" string)))
(with-current-buffer (get-buffer-create pgg-output-buffer)
(buffer-disable-undo)
(erase-buffer)
(apply #'call-process pgg-pgp-program nil t nil args)
(goto-char (point-min))
(cond
((re-search-forward "^pub\\s +[0-9]+/" nil t);PGP 2.*
(buffer-substring (point)(+ 8 (point))))
((re-search-forward "^Type" nil t);PGP 6.*
(beginning-of-line 2)
(substring
(nth 2 (split-string
(buffer-substring (point)(progn (end-of-line) (point)))))
2))))))
(defun pgg-pgp-encrypt-region (start end recipients &optional sign passphrase)
"Encrypt the current region between START and END."
(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
(passphrase (or passphrase
(when sign
(pgg-read-passphrase
(format "PGP passphrase for %s: "
pgg-pgp-user-id)
pgg-pgp-user-id))))
(args
(concat
"+encrypttoself=off +verbose=1 +batchmode +language=us -fate "
(if (or recipients pgg-encrypt-for-me)
(mapconcat 'shell-quote-argument
(append recipients
(if pgg-encrypt-for-me
(list pgg-pgp-user-id)))))
(if sign (concat " -s -u " (shell-quote-argument pgg-pgp-user-id))))))
(pgg-pgp-process-region start end nil pgg-pgp-program args)
(pgg-process-when-success nil)))
(defun pgg-pgp-decrypt-region (start end &optional passphrase)
"Decrypt the current region between START and END.
If optional PASSPHRASE is not specified, it will be obtained from the
passphrase cache or user."
(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
(key (pgg-pgp-lookup-key pgg-pgp-user-id 'encrypt))
(passphrase
(or passphrase
(pgg-read-passphrase
(format "PGP passphrase for %s: " pgg-pgp-user-id) key)))
(args
"+verbose=1 +batchmode +language=us -f"))
(pgg-pgp-process-region start end passphrase pgg-pgp-program args)
(pgg-process-when-success
(if pgg-cache-passphrase
(pgg-add-passphrase-to-cache key passphrase)))))
(defun pgg-pgp-sign-region (start end &optional clearsign passphrase)
"Make detached signature from text between START and END.
If optional PASSPHRASE is not specified, it will be obtained from the
passphrase cache or user."
(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
(passphrase
(or passphrase
(pgg-read-passphrase
(format "PGP passphrase for %s: " pgg-pgp-user-id)
(pgg-pgp-lookup-key pgg-pgp-user-id 'sign))))
(args
(concat (if clearsign "-fast" "-fbast")
" +verbose=1 +language=us +batchmode"
" -u " (shell-quote-argument pgg-pgp-user-id))))
(pgg-pgp-process-region start end passphrase pgg-pgp-program args)
(pgg-process-when-success
(goto-char (point-min))
(when (re-search-forward "^-+BEGIN PGP" nil t);XXX
(let ((packet
(cdr (assq 2 (pgg-parse-armor-region
(progn (beginning-of-line 2)
(point))
(point-max))))))
(if pgg-cache-passphrase
(pgg-add-passphrase-to-cache
(cdr (assq 'key-identifier packet))
passphrase)))))))
(defun pgg-pgp-verify-region (start end &optional signature)
"Verify region between START and END as the detached signature SIGNATURE."
(let* ((orig-file (pgg-make-temp-file "pgg"))
(args "+verbose=1 +batchmode +language=us")
(orig-mode (default-file-modes)))
(unwind-protect
(progn
(set-default-file-modes 448)
(let ((coding-system-for-write 'binary)
jka-compr-compression-info-list jam-zcat-filename-list)
(write-region start end orig-file)))
(set-default-file-modes orig-mode))
(if (stringp signature)
(progn
(copy-file signature (setq signature (concat orig-file ".asc")))
(setq args (concat args " " (shell-quote-argument signature)))))
(setq args (concat args " " (shell-quote-argument orig-file)))
(pgg-pgp-process-region (point)(point) nil pgg-pgp-program args)
(delete-file orig-file)
(if signature (delete-file signature))
(pgg-process-when-success
(goto-char (point-min))
(let ((case-fold-search t))
(while (re-search-forward "^warning: " nil t)
(delete-region (match-beginning 0)
(progn (beginning-of-line 2) (point)))))
(goto-char (point-min))
(when (re-search-forward "^\\.$" nil t)
(delete-region (point-min)
(progn (beginning-of-line 2)
(point)))))))
(defun pgg-pgp-insert-key ()
"Insert public key at point."
(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
(args
(concat "+verbose=1 +batchmode +language=us -kxaf "
(shell-quote-argument pgg-pgp-user-id))))
(pgg-pgp-process-region (point)(point) nil pgg-pgp-program args)
(insert-buffer-substring pgg-output-buffer)))
(defun pgg-pgp-snarf-keys-region (start end)
"Add all public keys in region between START and END to the keyring."
(let* ((pgg-pgp-user-id (or pgg-pgp-user-id pgg-default-user-id))
(key-file (pgg-make-temp-file "pgg"))
(args
(concat "+verbose=1 +batchmode +language=us -kaf "
(shell-quote-argument key-file))))
(let ((coding-system-for-write 'raw-text-dos))
(write-region start end key-file))
(pgg-pgp-process-region start end nil pgg-pgp-program args)
(delete-file key-file)
(pgg-process-when-success nil)))
(provide 'pgg-pgp)
;; arch-tag: 076b7801-37b2-49a6-97c3-218fdecde33c
;;; pgg-pgp.el ends here
|
