1 ;;; mml2015.el --- MIME Security with Pretty Good Privacy (PGP)
2 ;; Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
4 ;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
5 ;; Keywords: PGP MIME MML
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published
11 ;; by the Free Software Foundation; either version 2, or (at your
12 ;; option) any later version.
14 ;; GNU Emacs is distributed in the hope that it will be useful, but
15 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 ;; General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
26 ;; RFC 2015 is updated by RFC 3156, this file should be compatible
31 (eval-when-compile (require 'cl))
36 (defvar mml2015-use (or
40 (and (fboundp 'pgg-sign-region)
45 (and (fboundp 'gpg-sign-detached)
49 (and (fboundp 'mc-encrypt-generic)
50 (fboundp 'mc-sign-generic)
51 (fboundp 'mc-cleanup-recipient-headers)
53 "The package used for PGP/MIME.")
55 ;; Something is not RFC2015.
56 (defvar mml2015-function-alist
57 '((mailcrypt mml2015-mailcrypt-sign
58 mml2015-mailcrypt-encrypt
59 mml2015-mailcrypt-verify
60 mml2015-mailcrypt-decrypt
61 mml2015-mailcrypt-clear-verify
62 mml2015-mailcrypt-clear-decrypt)
67 mml2015-gpg-clear-verify
68 mml2015-gpg-clear-decrypt)
73 mml2015-pgg-clear-verify
74 mml2015-pgg-clear-decrypt))
75 "Alist of PGP/MIME functions.")
77 (defvar mml2015-result-buffer nil)
79 (defcustom mml2015-unabbrev-trust-alist
80 '(("TRUST_UNDEFINED" . nil)
82 ("TRUST_MARGINAL" . t)
84 ("TRUST_ULTIMATE" . t))
85 "Map GnuPG trust output values to a boolean saying if you trust the key."
86 :type '(repeat (cons (regexp :tag "GnuPG output regexp")
87 (boolean :tag "Trust key"))))
92 (autoload 'mailcrypt-decrypt "mailcrypt")
93 (autoload 'mailcrypt-verify "mailcrypt")
94 (autoload 'mc-pgp-always-sign "mailcrypt")
95 (autoload 'mc-encrypt-generic "mc-toplev")
96 (autoload 'mc-cleanup-recipient-headers "mc-toplev")
97 (autoload 'mc-sign-generic "mc-toplev"))
100 (defvar mc-default-scheme)
103 (defvar mml2015-decrypt-function 'mailcrypt-decrypt)
104 (defvar mml2015-verify-function 'mailcrypt-verify)
106 (defun mml2015-format-error (err)
107 (if (stringp (cadr err))
109 (format "%S" (cdr err))))
111 (defun mml2015-mailcrypt-decrypt (handle ctl)
113 (let (child handles result)
114 (unless (setq child (mm-find-part-by-type
116 "application/octet-stream" nil t))
117 (mm-set-handle-multipart-parameter
118 mm-security-handle 'gnus-info "Corrupted")
119 (throw 'error handle))
121 (mm-insert-part child)
124 (funcall mml2015-decrypt-function)
126 (mm-set-handle-multipart-parameter
127 mm-security-handle 'gnus-details (mml2015-format-error err))
130 (mm-set-handle-multipart-parameter
131 mm-security-handle 'gnus-details "Quit.")
134 (mm-set-handle-multipart-parameter
135 mm-security-handle 'gnus-info "Failed")
136 (throw 'error handle))
137 (setq handles (mm-dissect-buffer t)))
138 (mm-destroy-parts handle)
139 (mm-set-handle-multipart-parameter
140 mm-security-handle 'gnus-info
142 (let ((sig (with-current-buffer mml2015-result-buffer
143 (mml2015-gpg-extract-signature-details))))
144 (concat ", Signer: " sig))))
145 (if (listp (car handles))
149 (defun mml2015-mailcrypt-clear-decrypt ()
153 (funcall mml2015-decrypt-function)
155 (mm-set-handle-multipart-parameter
156 mm-security-handle 'gnus-details (mml2015-format-error err))
159 (mm-set-handle-multipart-parameter
160 mm-security-handle 'gnus-details "Quit.")
163 (mm-set-handle-multipart-parameter
164 mm-security-handle 'gnus-info "OK")
165 (mm-set-handle-multipart-parameter
166 mm-security-handle 'gnus-info "Failed"))))
168 (defun mml2015-fix-micalg (alg)
170 ;; Mutt/1.2.5i has seen sending micalg=php-sha1
171 (upcase (if (string-match "^p[gh]p-" alg)
172 (substring alg (match-end 0))
175 (defun mml2015-mailcrypt-verify (handle ctl)
178 (unless (setq part (mm-find-raw-part-by-type
179 ctl (or (mm-handle-multipart-ctl-parameter
181 "application/pgp-signature")
183 (mm-set-handle-multipart-parameter
184 mm-security-handle 'gnus-info "Corrupted")
185 (throw 'error handle))
187 (insert "-----BEGIN PGP SIGNED MESSAGE-----\n")
188 (insert (format "Hash: %s\n\n"
189 (or (mml2015-fix-micalg
190 (mm-handle-multipart-ctl-parameter
194 (narrow-to-region (point) (point))
196 (goto-char (point-min))
198 (if (looking-at "^-")
201 (unless (setq part (mm-find-part-by-type
202 (cdr handle) "application/pgp-signature" nil t))
203 (mm-set-handle-multipart-parameter
204 mm-security-handle 'gnus-info "Corrupted")
205 (throw 'error handle))
207 (narrow-to-region (point) (point))
208 (mm-insert-part part)
209 (goto-char (point-min))
210 (if (re-search-forward "^-----BEGIN PGP [^-]+-----\r?$" nil t)
211 (replace-match "-----BEGIN PGP SIGNATURE-----" t t))
212 (if (re-search-forward "^-----END PGP [^-]+-----\r?$" nil t)
213 (replace-match "-----END PGP SIGNATURE-----" t t)))
214 (let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*")))
215 (unless (condition-case err
217 (funcall mml2015-verify-function)
218 (if (get-buffer " *mailcrypt stderr temp")
219 (mm-set-handle-multipart-parameter
220 mm-security-handle 'gnus-details
221 (with-current-buffer " *mailcrypt stderr temp"
223 (if (get-buffer " *mailcrypt stdout temp")
224 (kill-buffer " *mailcrypt stdout temp"))
225 (if (get-buffer " *mailcrypt stderr temp")
226 (kill-buffer " *mailcrypt stderr temp"))
227 (if (get-buffer " *mailcrypt status temp")
228 (kill-buffer " *mailcrypt status temp"))
229 (if (get-buffer mc-gpg-debug-buffer)
230 (kill-buffer mc-gpg-debug-buffer)))
232 (mm-set-handle-multipart-parameter
233 mm-security-handle 'gnus-details (mml2015-format-error err))
236 (mm-set-handle-multipart-parameter
237 mm-security-handle 'gnus-details "Quit.")
239 (mm-set-handle-multipart-parameter
240 mm-security-handle 'gnus-info "Failed")
241 (throw 'error handle))))
242 (mm-set-handle-multipart-parameter
243 mm-security-handle 'gnus-info "OK")
246 (defun mml2015-mailcrypt-clear-verify ()
247 (let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*")))
248 (if (condition-case err
250 (funcall mml2015-verify-function)
251 (if (get-buffer " *mailcrypt stderr temp")
252 (mm-set-handle-multipart-parameter
253 mm-security-handle 'gnus-details
254 (with-current-buffer " *mailcrypt stderr temp"
256 (if (get-buffer " *mailcrypt stdout temp")
257 (kill-buffer " *mailcrypt stdout temp"))
258 (if (get-buffer " *mailcrypt stderr temp")
259 (kill-buffer " *mailcrypt stderr temp"))
260 (if (get-buffer " *mailcrypt status temp")
261 (kill-buffer " *mailcrypt status temp"))
262 (if (get-buffer mc-gpg-debug-buffer)
263 (kill-buffer mc-gpg-debug-buffer)))
265 (mm-set-handle-multipart-parameter
266 mm-security-handle 'gnus-details (mml2015-format-error err))
269 (mm-set-handle-multipart-parameter
270 mm-security-handle 'gnus-details "Quit.")
272 (mm-set-handle-multipart-parameter
273 mm-security-handle 'gnus-info "OK")
274 (mm-set-handle-multipart-parameter
275 mm-security-handle 'gnus-info "Failed"))))
277 (defun mml2015-mailcrypt-sign (cont)
278 (mc-sign-generic (message-options-get 'message-sender)
281 (funcall mml-boundary-function (incf mml-multipart-number)))
283 (goto-char (point-min))
284 (unless (re-search-forward "^-----BEGIN PGP SIGNED MESSAGE-----\r?$" nil t)
285 (error "Cannot find signed begin line"))
286 (goto-char (match-beginning 0))
288 (unless (looking-at "Hash:[ \t]*\\([a-zA-Z0-9]+\\)")
289 (error "Cannot not find PGP hash"))
290 (setq hash (match-string 1))
291 (unless (re-search-forward "^$" nil t)
292 (error "Cannot not find PGP message"))
294 (delete-region (point-min) (point))
295 (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
297 (insert (format "\tmicalg=pgp-%s; protocol=\"application/pgp-signature\"\n"
299 (insert (format "\n--%s\n" boundary))
301 (goto-char (point-max))
302 (unless (re-search-backward "^-----END PGP SIGNATURE-----\r?$" nil t)
303 (error "Cannot find signature part"))
304 (replace-match "-----END PGP MESSAGE-----" t t)
305 (goto-char (match-beginning 0))
306 (unless (re-search-backward "^-----BEGIN PGP SIGNATURE-----\r?$"
308 (error "Cannot find signature part"))
309 (replace-match "-----BEGIN PGP MESSAGE-----" t t)
310 (goto-char (match-beginning 0))
312 (narrow-to-region point (point))
314 (while (re-search-forward "^- -" nil t)
315 (replace-match "-" t t))
316 (goto-char (point-max)))
317 (insert (format "--%s\n" boundary))
318 (insert "Content-Type: application/pgp-signature\n\n")
319 (goto-char (point-max))
320 (insert (format "--%s--\n" boundary))
321 (goto-char (point-max))))
323 (defun mml2015-mailcrypt-encrypt (cont &optional sign)
324 (let ((mc-pgp-always-sign
325 (or mc-pgp-always-sign
327 (eq t (or (message-options-get 'message-sign-encrypt)
329 'message-sign-encrypt
330 (or (y-or-n-p "Sign the message? ")
333 (mm-with-unibyte-current-buffer
335 (or (message-options-get 'message-recipients)
336 (message-options-set 'message-recipients
337 (mc-cleanup-recipient-headers
338 (read-string "Recipients: "))))
340 (message-options-get 'message-sender))))
341 (goto-char (point-min))
342 (unless (looking-at "-----BEGIN PGP MESSAGE-----")
343 (error "Fail to encrypt the message"))
345 (funcall mml-boundary-function (incf mml-multipart-number))))
346 (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n"
348 (insert "\tprotocol=\"application/pgp-encrypted\"\n\n")
349 (insert (format "--%s\n" boundary))
350 (insert "Content-Type: application/pgp-encrypted\n\n")
351 (insert "Version: 1\n\n")
352 (insert (format "--%s\n" boundary))
353 (insert "Content-Type: application/octet-stream\n\n")
354 (goto-char (point-max))
355 (insert (format "--%s--\n" boundary))
356 (goto-char (point-max))))
361 (autoload 'gpg-decrypt "gpg")
362 (autoload 'gpg-verify "gpg")
363 (autoload 'gpg-verify-cleartext "gpg")
364 (autoload 'gpg-sign-detached "gpg")
365 (autoload 'gpg-sign-encrypt "gpg")
366 (autoload 'gpg-encrypt "gpg")
367 (autoload 'gpg-passphrase-read "gpg"))
369 (defun mml2015-gpg-passphrase ()
370 (or (message-options-get 'gpg-passphrase)
371 (message-options-set 'gpg-passphrase (gpg-passphrase-read))))
373 (defun mml2015-gpg-decrypt-1 ()
374 (let ((cipher (current-buffer)) plain result)
375 (if (with-temp-buffer
377 (gpg-decrypt cipher (setq plain (current-buffer))
378 mml2015-result-buffer nil)
379 (mm-set-handle-multipart-parameter
380 mm-security-handle 'gnus-details
381 (with-current-buffer mml2015-result-buffer
385 (insert-buffer-substring plain)
386 (goto-char (point-min))
387 (while (search-forward "\r\n" nil t)
388 (replace-match "\n" t t))))
390 ;; Some wrong with the return value, check plain text buffer.
391 (if (> (point-max) (point-min))
395 (defun mml2015-gpg-decrypt (handle ctl)
396 (let ((mml2015-decrypt-function 'mml2015-gpg-decrypt-1))
397 (mml2015-mailcrypt-decrypt handle ctl)))
399 (defun mml2015-gpg-clear-decrypt ()
401 (setq result (mml2015-gpg-decrypt-1))
403 (mm-set-handle-multipart-parameter
404 mm-security-handle 'gnus-info "OK")
405 (mm-set-handle-multipart-parameter
406 mm-security-handle 'gnus-info "Failed"))))
408 (defun mml2015-gpg-pretty-print-fpr (fingerprint)
410 (fpr-length (string-width fingerprint))
413 (setq fingerprint (string-to-list fingerprint))
415 (setq fpr-length (- fpr-length 4))
416 (setq slice (butlast fingerprint fpr-length))
417 (setq fingerprint (nthcdr 4 fingerprint))
418 (setq n-slice (1+ n-slice))
424 (otherwise (concat " " slice))))))
427 (defun mml2015-gpg-extract-signature-details ()
428 (goto-char (point-min))
429 (let* ((expired (re-search-forward
430 "^\\[GNUPG:\\] SIGEXPIRED$"
432 (signer (and (re-search-forward
433 "^\\[GNUPG:\\] GOODSIG \\([0-9A-Za-z]*\\) \\(.*\\)$"
435 (cons (match-string 1) (match-string 2))))
436 (fprint (and (re-search-forward
437 "^\\[GNUPG:\\] VALIDSIG \\([0-9a-zA-Z]*\\) "
440 (trust (and (re-search-forward
441 "^\\[GNUPG:\\] \\(TRUST_.*\\)$"
445 (cdr (assoc trust mml2015-unabbrev-trust-alist))))
446 (cond ((and signer fprint)
448 (unless trust-good-enough-p
449 (concat "\nUntrusted, Fingerprint: "
450 (mml2015-gpg-pretty-print-fpr fprint)))
452 (format "\nWARNING: Signature from expired key (%s)"
455 "^\\(gpg: \\)?Good signature from \"\\(.*\\)\"$" nil t)
458 "From unknown user"))))
460 (defun mml2015-gpg-verify (handle ctl)
462 (let (part message signature info-is-set-p)
463 (unless (setq part (mm-find-raw-part-by-type
464 ctl (or (mm-handle-multipart-ctl-parameter
466 "application/pgp-signature")
468 (mm-set-handle-multipart-parameter
469 mm-security-handle 'gnus-info "Corrupted")
470 (throw 'error handle))
472 (setq message (current-buffer))
474 ;; Convert <LF> to <CR><LF> in verify mode. Sign and
475 ;; clearsign use --textmode. The conversion is not necessary.
476 ;; In clearverify, the conversion is not necessary either.
477 (goto-char (point-min))
480 (unless (eq (char-before) ?\r)
485 (setq signature (current-buffer))
486 (unless (setq part (mm-find-part-by-type
487 (cdr handle) "application/pgp-signature" nil t))
488 (mm-set-handle-multipart-parameter
489 mm-security-handle 'gnus-info "Corrupted")
490 (throw 'error handle))
491 (mm-insert-part part)
492 (unless (condition-case err
494 (gpg-verify message signature mml2015-result-buffer)
495 (mm-set-handle-multipart-parameter
496 mm-security-handle 'gnus-details
497 (with-current-buffer mml2015-result-buffer
500 (mm-set-handle-multipart-parameter
501 mm-security-handle 'gnus-details (mml2015-format-error err))
502 (mm-set-handle-multipart-parameter
503 mm-security-handle 'gnus-info "Error.")
504 (setq info-is-set-p t)
507 (mm-set-handle-multipart-parameter
508 mm-security-handle 'gnus-details "Quit.")
509 (mm-set-handle-multipart-parameter
510 mm-security-handle 'gnus-info "Quit.")
511 (setq info-is-set-p t)
513 (unless info-is-set-p
514 (mm-set-handle-multipart-parameter
515 mm-security-handle 'gnus-info "Failed"))
516 (throw 'error handle)))
517 (mm-set-handle-multipart-parameter
518 mm-security-handle 'gnus-info
519 (with-current-buffer mml2015-result-buffer
520 (mml2015-gpg-extract-signature-details))))
523 (defun mml2015-gpg-clear-verify ()
524 (if (condition-case err
526 (gpg-verify-cleartext (current-buffer) mml2015-result-buffer)
527 (mm-set-handle-multipart-parameter
528 mm-security-handle 'gnus-details
529 (with-current-buffer mml2015-result-buffer
532 (mm-set-handle-multipart-parameter
533 mm-security-handle 'gnus-details (mml2015-format-error err))
536 (mm-set-handle-multipart-parameter
537 mm-security-handle 'gnus-details "Quit.")
539 (mm-set-handle-multipart-parameter
540 mm-security-handle 'gnus-info
541 (with-current-buffer mml2015-result-buffer
542 (mml2015-gpg-extract-signature-details)))
543 (mm-set-handle-multipart-parameter
544 mm-security-handle 'gnus-info "Failed")))
546 (defun mml2015-gpg-sign (cont)
548 (funcall mml-boundary-function (incf mml-multipart-number)))
549 (text (current-buffer)) signature)
550 (goto-char (point-max))
554 (unless (gpg-sign-detached text (setq signature (current-buffer))
555 mml2015-result-buffer
557 (message-options-get 'message-sender)
558 t t) ; armor & textmode
559 (unless (> (point-max) (point-min))
560 (pop-to-buffer mml2015-result-buffer)
561 (error "Sign error")))
562 (goto-char (point-min))
563 (while (re-search-forward "\r+$" nil t)
564 (replace-match "" t t))
566 (goto-char (point-min))
567 (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
569 ;;; FIXME: what is the micalg?
570 (insert "\tmicalg=pgp-sha1; protocol=\"application/pgp-signature\"\n")
571 (insert (format "\n--%s\n" boundary))
572 (goto-char (point-max))
573 (insert (format "\n--%s\n" boundary))
574 (insert "Content-Type: application/pgp-signature\n\n")
575 (insert-buffer-substring signature)
576 (goto-char (point-max))
577 (insert (format "--%s--\n" boundary))
578 (goto-char (point-max)))))
580 (defun mml2015-gpg-encrypt (cont &optional sign)
582 (funcall mml-boundary-function (incf mml-multipart-number)))
583 (text (current-buffer))
585 (mm-with-unibyte-current-buffer
587 ;; set up a function to call the correct gpg encrypt routine
588 ;; with the right arguments. (FIXME: this should be done
590 (flet ((gpg-encrypt-func
591 (sign plaintext ciphertext result recipients &optional
592 passphrase sign-with-key armor textmode)
595 plaintext ciphertext result recipients passphrase
596 sign-with-key armor textmode)
598 plaintext ciphertext result recipients passphrase
600 (unless (gpg-encrypt-func
601 sign ; passed in when using signencrypt
602 text (setq cipher (current-buffer))
603 mml2015-result-buffer
606 (message-options-get 'message-recipients)
607 (message-options-set 'message-recipients
608 (read-string "Recipients: ")))
611 (message-options-get 'message-sender)
612 t t) ; armor & textmode
613 (unless (> (point-max) (point-min))
614 (pop-to-buffer mml2015-result-buffer)
615 (error "Encrypt error"))))
616 (goto-char (point-min))
617 (while (re-search-forward "\r+$" nil t)
618 (replace-match "" t t))
620 (delete-region (point-min) (point-max))
621 (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n"
623 (insert "\tprotocol=\"application/pgp-encrypted\"\n\n")
624 (insert (format "--%s\n" boundary))
625 (insert "Content-Type: application/pgp-encrypted\n\n")
626 (insert "Version: 1\n\n")
627 (insert (format "--%s\n" boundary))
628 (insert "Content-Type: application/octet-stream\n\n")
629 (insert-buffer-substring cipher)
630 (goto-char (point-max))
631 (insert (format "--%s--\n" boundary))
632 (goto-char (point-max))))))
637 (defvar pgg-errors-buffer)
638 (defvar pgg-output-buffer))
641 (autoload 'pgg-decrypt-region "pgg")
642 (autoload 'pgg-verify-region "pgg")
643 (autoload 'pgg-sign-region "pgg")
644 (autoload 'pgg-encrypt-region "pgg"))
646 (defun mml2015-pgg-decrypt (handle ctl)
648 (let ((pgg-errors-buffer mml2015-result-buffer)
649 child handles result decrypt-status)
650 (unless (setq child (mm-find-part-by-type
652 "application/octet-stream" nil t))
653 (mm-set-handle-multipart-parameter
654 mm-security-handle 'gnus-info "Corrupted")
655 (throw 'error handle))
657 (mm-insert-part child)
658 (if (condition-case err
660 (pgg-decrypt-region (point-min) (point-max))
662 (with-current-buffer mml2015-result-buffer
664 (mm-set-handle-multipart-parameter
665 mm-security-handle 'gnus-details
668 (mm-set-handle-multipart-parameter
669 mm-security-handle 'gnus-details (mml2015-format-error err))
672 (mm-set-handle-multipart-parameter
673 mm-security-handle 'gnus-details "Quit.")
675 (with-current-buffer pgg-output-buffer
676 (goto-char (point-min))
677 (while (search-forward "\r\n" nil t)
678 (replace-match "\n" t t))
679 (setq handles (mm-dissect-buffer t))
680 (mm-destroy-parts handle)
681 (mm-set-handle-multipart-parameter
682 mm-security-handle 'gnus-info "OK")
683 (mm-set-handle-multipart-parameter
684 mm-security-handle 'gnus-details
685 (concat decrypt-status
686 (when (stringp (car handles))
687 "\n" (mm-handle-multipart-ctl-parameter
688 handles 'gnus-details))))
689 (if (listp (car handles))
692 (mm-set-handle-multipart-parameter
693 mm-security-handle 'gnus-info "Failed")
694 (throw 'error handle))))))
696 (defun mml2015-pgg-clear-decrypt ()
697 (let ((pgg-errors-buffer mml2015-result-buffer))
699 (pgg-decrypt-region (point-min) (point-max))
700 (mm-set-handle-multipart-parameter
701 mm-security-handle 'gnus-details
702 (with-current-buffer mml2015-result-buffer
706 (insert-buffer-substring pgg-output-buffer)
707 (goto-char (point-min))
708 (while (search-forward "\r\n" nil t)
709 (replace-match "\n" t t))
710 (mm-set-handle-multipart-parameter
711 mm-security-handle 'gnus-info "OK"))
712 (mm-set-handle-multipart-parameter
713 mm-security-handle 'gnus-info "Failed"))))
715 (defun mml2015-pgg-verify (handle ctl)
716 (let ((pgg-errors-buffer mml2015-result-buffer)
717 signature-file part signature)
718 (if (or (null (setq part (mm-find-raw-part-by-type
719 ctl (or (mm-handle-multipart-ctl-parameter
721 "application/pgp-signature")
723 (null (setq signature (mm-find-part-by-type
724 (cdr handle) "application/pgp-signature" nil t))))
726 (mm-set-handle-multipart-parameter
727 mm-security-handle 'gnus-info "Corrupted")
731 ;; Convert <LF> to <CR><LF> in verify mode. Sign and
732 ;; clearsign use --textmode. The conversion is not necessary.
733 ;; In clearverify, the conversion is not necessary either.
734 (goto-char (point-min))
737 (unless (eq (char-before) ?\r)
741 (with-temp-file (setq signature-file (mm-make-temp-file "pgg"))
742 (mm-insert-part signature))
743 (if (condition-case err
745 (pgg-verify-region (point-min) (point-max)
747 (goto-char (point-min))
748 (while (search-forward "\r\n" nil t)
749 (replace-match "\n" t t))
750 (mm-set-handle-multipart-parameter
751 mm-security-handle 'gnus-details
752 (concat (with-current-buffer pgg-output-buffer
754 (with-current-buffer pgg-errors-buffer
757 (mm-set-handle-multipart-parameter
758 mm-security-handle 'gnus-details (mml2015-format-error err))
761 (mm-set-handle-multipart-parameter
762 mm-security-handle 'gnus-details "Quit.")
765 (delete-file signature-file)
766 (mm-set-handle-multipart-parameter
767 mm-security-handle 'gnus-info
768 (with-current-buffer pgg-errors-buffer
769 (mml2015-gpg-extract-signature-details))))
770 (delete-file signature-file)
771 (mm-set-handle-multipart-parameter
772 mm-security-handle 'gnus-info "Failed")))))
775 (defun mml2015-pgg-clear-verify ()
776 (let ((pgg-errors-buffer mml2015-result-buffer)
777 (text (buffer-string))
778 (coding-system buffer-file-coding-system))
779 (if (condition-case err
781 (mm-with-unibyte-buffer
782 (insert (encode-coding-string text coding-system))
783 (pgg-verify-region (point-min) (point-max) nil t))
784 (goto-char (point-min))
785 (while (search-forward "\r\n" nil t)
786 (replace-match "\n" t t))
787 (mm-set-handle-multipart-parameter
788 mm-security-handle 'gnus-details
789 (concat (with-current-buffer pgg-output-buffer
791 (with-current-buffer pgg-errors-buffer
794 (mm-set-handle-multipart-parameter
795 mm-security-handle 'gnus-details (mml2015-format-error err))
798 (mm-set-handle-multipart-parameter
799 mm-security-handle 'gnus-details "Quit.")
801 (mm-set-handle-multipart-parameter
802 mm-security-handle 'gnus-info
803 (with-current-buffer pgg-errors-buffer
804 (mml2015-gpg-extract-signature-details)))
805 (mm-set-handle-multipart-parameter
806 mm-security-handle 'gnus-info "Failed"))))
808 (defun mml2015-pgg-sign (cont)
809 (let ((pgg-errors-buffer mml2015-result-buffer)
810 (boundary (funcall mml-boundary-function (incf mml-multipart-number)))
811 (pgg-default-user-id (or (message-options-get 'mml-sender)
812 pgg-default-user-id)))
813 (unless (pgg-sign-region (point-min) (point-max))
814 (pop-to-buffer mml2015-result-buffer)
815 (error "Sign error"))
816 (goto-char (point-min))
817 (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
819 ;;; FIXME: what is the micalg?
820 (insert "\tmicalg=pgp-sha1; protocol=\"application/pgp-signature\"\n")
821 (insert (format "\n--%s\n" boundary))
822 (goto-char (point-max))
823 (insert (format "\n--%s\n" boundary))
824 (insert "Content-Type: application/pgp-signature\n\n")
825 (insert-buffer-substring pgg-output-buffer)
826 (goto-char (point-max))
827 (insert (format "--%s--\n" boundary))
828 (goto-char (point-max))))
830 (defun mml2015-pgg-encrypt (cont &optional sign)
831 (let ((pgg-errors-buffer mml2015-result-buffer)
832 (boundary (funcall mml-boundary-function (incf mml-multipart-number))))
833 (unless (pgg-encrypt-region (point-min) (point-max)
836 (message-options-get 'message-recipients)
837 (message-options-set 'message-recipients
838 (read-string "Recipients: ")))
841 (pop-to-buffer mml2015-result-buffer)
842 (error "Encrypt error"))
843 (delete-region (point-min) (point-max))
844 (goto-char (point-min))
845 (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n"
847 (insert "\tprotocol=\"application/pgp-encrypted\"\n\n")
848 (insert (format "--%s\n" boundary))
849 (insert "Content-Type: application/pgp-encrypted\n\n")
850 (insert "Version: 1\n\n")
851 (insert (format "--%s\n" boundary))
852 (insert "Content-Type: application/octet-stream\n\n")
853 (insert-buffer-substring pgg-output-buffer)
854 (goto-char (point-max))
855 (insert (format "--%s--\n" boundary))
856 (goto-char (point-max))))
860 (defun mml2015-clean-buffer ()
861 (if (gnus-buffer-live-p mml2015-result-buffer)
862 (with-current-buffer mml2015-result-buffer
865 (setq mml2015-result-buffer
866 (gnus-get-buffer-create "*MML2015 Result*"))
869 (defsubst mml2015-clear-decrypt-function ()
870 (nth 6 (assq mml2015-use mml2015-function-alist)))
872 (defsubst mml2015-clear-verify-function ()
873 (nth 5 (assq mml2015-use mml2015-function-alist)))
876 (defun mml2015-decrypt (handle ctl)
877 (mml2015-clean-buffer)
878 (let ((func (nth 4 (assq mml2015-use mml2015-function-alist))))
880 (funcall func handle ctl)
884 (defun mml2015-decrypt-test (handle ctl)
888 (defun mml2015-verify (handle ctl)
889 (mml2015-clean-buffer)
890 (let ((func (nth 3 (assq mml2015-use mml2015-function-alist))))
892 (funcall func handle ctl)
896 (defun mml2015-verify-test (handle ctl)
900 (defun mml2015-encrypt (cont &optional sign)
901 (mml2015-clean-buffer)
902 (let ((func (nth 2 (assq mml2015-use mml2015-function-alist))))
904 (funcall func cont sign)
905 (error "Cannot find encrypt function"))))
908 (defun mml2015-sign (cont)
909 (mml2015-clean-buffer)
910 (let ((func (nth 1 (assq mml2015-use mml2015-function-alist))))
913 (error "Cannot find sign function"))))
916 (defun mml2015-self-encrypt ()
917 (mml2015-encrypt nil))
921 ;;; mml2015.el ends here