1 ;;; mml1991.el --- Old PGP message format (RFC 1991) support for MML
3 ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006 Free Software Foundation, Inc.
6 ;; Author: Sascha Ldecke <sascha@meta-x.de>,
7 ;; Simon Josefsson <simon@josefsson.org> (Mailcrypt interface, Gnus glue)
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 ;; Boston, MA 02110-1301, USA.
37 (defvar mc-pgp-always-sign)
39 (autoload 'quoted-printable-decode-region "qp")
40 (autoload 'quoted-printable-encode-region "qp")
42 (defvar mml1991-use mml2015-use
43 "The package used for PGP.")
45 (defvar mml1991-function-alist
46 '((mailcrypt mml1991-mailcrypt-sign
47 mml1991-mailcrypt-encrypt)
54 "Alist of PGP functions.")
56 (defvar mml1991-verbose mml-secure-verbose
57 "If non-nil, ask the user about the current operation more verbosely.")
59 (defvar mml1991-cache-passphrase mml-secure-cache-passphrase
60 "If t, cache passphrase.")
62 (defvar mml1991-passphrase-cache-expiry mml-secure-passphrase-cache-expiry
63 "How many seconds the passphrase is cached.
64 Whether the passphrase is cached at all is controlled by
65 `mml1991-cache-passphrase'.")
67 (defvar mml1991-signers nil
68 "A list of your own key ID which will be used to sign a message.")
70 (defvar mml1991-encrypt-to-self nil
71 "If t, add your own key ID to recipient list when encryption.")
76 (autoload 'mc-sign-generic "mc-toplev"))
78 (defvar mml1991-decrypt-function 'mailcrypt-decrypt)
79 (defvar mml1991-verify-function 'mailcrypt-verify)
81 (defun mml1991-mailcrypt-sign (cont)
82 (let ((text (current-buffer))
84 (result-buffer (get-buffer-create "*GPG Result*")))
85 ;; Save MIME Content[^ ]+: headers from signing
86 (goto-char (point-min))
87 (while (looking-at "^Content[^ ]+:") (forward-line))
89 (setq headers (buffer-string))
90 (delete-region (point-min) (point)))
91 (goto-char (point-max))
94 (quoted-printable-decode-region (point-min) (point-max))
96 (setq signature (current-buffer))
97 (insert-buffer-substring text)
98 (unless (mc-sign-generic (message-options-get 'message-sender)
100 (unless (> (point-max) (point-min))
101 (pop-to-buffer result-buffer)
102 (error "Sign error")))
103 (goto-char (point-min))
104 (while (re-search-forward "\r+$" nil t)
105 (replace-match "" t t))
106 (quoted-printable-encode-region (point-min) (point-max))
108 (delete-region (point-min) (point-max))
109 (if headers (insert headers))
111 (insert-buffer-substring signature)
112 (goto-char (point-max)))))
114 (defun mml1991-mailcrypt-encrypt (cont &optional sign)
115 (let ((text (current-buffer))
117 (or mc-pgp-always-sign
119 (eq t (or (message-options-get 'message-sign-encrypt)
121 'message-sign-encrypt
122 (or (y-or-n-p "Sign the message? ")
126 (result-buffer (get-buffer-create "*GPG Result*")))
127 ;; Strip MIME Content[^ ]: headers since it will be ASCII ARMOURED
128 (goto-char (point-min))
129 (while (looking-at "^Content[^ ]+:") (forward-line))
131 (delete-region (point-min) (point)))
132 (mm-with-unibyte-current-buffer
134 (setq cipher (current-buffer))
135 (insert-buffer-substring text)
136 (unless (mc-encrypt-generic
138 (message-options-get 'message-recipients)
139 (message-options-set 'message-recipients
140 (read-string "Recipients: ")))
142 (point-min) (point-max)
143 (message-options-get 'message-sender)
145 (unless (> (point-max) (point-min))
146 (pop-to-buffer result-buffer)
147 (error "Encrypt error")))
148 (goto-char (point-min))
149 (while (re-search-forward "\r+$" nil t)
150 (replace-match "" t t))
152 (delete-region (point-min) (point-max))
153 ;;(insert "Content-Type: application/pgp-encrypted\n\n")
154 ;;(insert "Version: 1\n\n")
156 (insert-buffer-substring cipher)
157 (goto-char (point-max))))))
162 (autoload 'gpg-sign-cleartext "gpg"))
164 (defun mml1991-gpg-sign (cont)
165 (let ((text (current-buffer))
167 (result-buffer (get-buffer-create "*GPG Result*")))
168 ;; Save MIME Content[^ ]+: headers from signing
169 (goto-char (point-min))
170 (while (looking-at "^Content[^ ]+:") (forward-line))
172 (setq headers (buffer-string))
173 (delete-region (point-min) (point)))
174 (goto-char (point-max))
177 (quoted-printable-decode-region (point-min) (point-max))
179 (unless (gpg-sign-cleartext text (setq signature (current-buffer))
182 (message-options-get 'message-sender))
183 (unless (> (point-max) (point-min))
184 (pop-to-buffer result-buffer)
185 (error "Sign error")))
186 (goto-char (point-min))
187 (while (re-search-forward "\r+$" nil t)
188 (replace-match "" t t))
189 (quoted-printable-encode-region (point-min) (point-max))
191 (delete-region (point-min) (point-max))
192 (if headers (insert headers))
194 (insert-buffer-substring signature)
195 (goto-char (point-max)))))
197 (defun mml1991-gpg-encrypt (cont &optional sign)
198 (let ((text (current-buffer))
200 (result-buffer (get-buffer-create "*GPG Result*")))
201 ;; Strip MIME Content[^ ]: headers since it will be ASCII ARMOURED
202 (goto-char (point-min))
203 (while (looking-at "^Content[^ ]+:") (forward-line))
205 (delete-region (point-min) (point)))
206 (mm-with-unibyte-current-buffer
208 (flet ((gpg-encrypt-func