1 ;;; mml2015.el --- MIME Security with Pretty Good Privacy (PGP)
2 ;; Copyright (C) 2000, 2001, 2002, 2003, 2004 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
39 ;; Avoid the "Recursive load suspected" error
41 (let ((recursive-load-depth-limit 100))
43 (and (fboundp 'pgg-sign-region)
48 (and (fboundp 'gpg-sign-detached)
52 (and (fboundp 'mc-encrypt-generic)
53 (fboundp 'mc-sign-generic)
54 (fboundp 'mc-cleanup-recipient-headers)
56 "The package used for PGP/MIME.
57 Valid packages include `pgg', `gpg' and `mailcrypt'.")
59 ;; Something is not RFC2015.
60 (defvar mml2015-function-alist
61 '((mailcrypt mml2015-mailcrypt-sign
62 mml2015-mailcrypt-encrypt
63 mml2015-mailcrypt-verify
64 mml2015-mailcrypt-decrypt
65 mml2015-mailcrypt-clear-verify
66 mml2015-mailcrypt-clear-decrypt)
71 mml2015-gpg-clear-verify
72 mml2015-gpg-clear-decrypt)
77 mml2015-pgg-clear-verify
78 mml2015-pgg-clear-decrypt))
79 "Alist of PGP/MIME functions.")
81 (defvar mml2015-result-buffer nil)
83 (defcustom mml2015-unabbrev-trust-alist
84 '(("TRUST_UNDEFINED" . nil)
86 ("TRUST_MARGINAL" . t)
88 ("TRUST_ULTIMATE" . t))
89 "Map GnuPG trust output values to a boolean saying if you trust the key."
90 :type '(repeat (cons (regexp :tag "GnuPG output regexp")
91 (boolean :tag "Trust key"))))
96 (autoload 'mailcrypt-decrypt "mailcrypt")
97 (autoload 'mailcrypt-verify "mailcrypt")
98 (autoload 'mc-pgp-always-sign "mailcrypt")
99 (autoload 'mc-encrypt-generic "mc-toplev")
100 (autoload 'mc-cleanup-recipient-headers "mc-toplev")
101 (autoload 'mc-sign-generic "mc-toplev"))
104 (defvar mc-default-scheme)
107 (defvar mml2015-decrypt-function 'mailcrypt-decrypt)
108 (defvar mml2015-verify-function 'mailcrypt-verify)
110 (defun mml2015-format-error (err)
111 (if (stringp (cadr err))
113 (format "%S" (cdr err))))
115 (defun mml2015-mailcrypt-decrypt (handle ctl)
117 (let (child handles result)
118 (unless (setq child (mm-find-part-by-type
120 "application/octet-stream" nil t))
121 (mm-set-handle-multipart-parameter
122 mm-security-handle 'gnus-info "Corrupted")
123 (throw 'error handle))
125 (mm-insert-part child)
128 (funcall mml2015-decrypt-function)
130 (mm-set-handle-multipart-parameter
131 mm-security-handle 'gnus-details (mml2015-format-error err))
134 (mm-set-handle-multipart-parameter
135 mm-security-handle 'gnus-details "Quit.")
138 (mm-set-handle-multipart-parameter
139 mm-security-handle 'gnus-info "Failed")
140 (throw 'error handle))
141 (setq handles (mm-dissect-buffer t)))
142 (mm-destroy-parts handle)
143 (mm-set-handle-multipart-parameter
144 mm-security-handle 'gnus-info
146 (let ((sig (with-current-buffer mml2015-result-buffer
147 (mml2015-gpg-extract-signature-details))))
148 (concat ", Signer: " sig))))
149 (if (listp (car handles))
153 (defun mml2015-mailcrypt-clear-decrypt ()
157 (funcall mml2015-decrypt-function)
159 (mm-set-handle-multipart-parameter
160 mm-security-handle 'gnus-details (mml2015-format-error err))
163 (mm-set-handle-multipart-parameter
164 mm-security-handle 'gnus-details "Quit.")
167 (mm-set-handle-multipart-parameter
168 mm-security-handle 'gnus-info "OK")
169 (mm-set-handle-multipart-parameter
170 mm-security-handle 'gnus-info "Failed"))))
172 (defun mml2015-fix-micalg (alg)
174 ;; Mutt/1.2.5i has seen sending micalg=php-sha1
175 (upcase (if (string-match "^p[gh]p-" alg)
176 (substring alg (match-end 0))
179 (defun mml2015-mailcrypt-verify (handle ctl)
182 (unless (setq part (mm-find-raw-part-by-type
183 ctl (or (mm-handle-multipart-ctl-parameter
185 "application/pgp-signature")
187 (mm-set-handle-multipart-parameter
188 mm-security-handle 'gnus-info "Corrupted")
189 (throw 'error handle))
191 (insert "-----BEGIN PGP SIGNED MESSAGE-----\n")
192 (insert (format "Hash: %s\n\n"
193 (or (mml2015-fix-micalg
194 (mm-handle-multipart-ctl-parameter
198 (narrow-to-region (point) (point))
200 (goto-char (point-min))
202 (if (looking-at "^-")
205 (unless (setq part (mm-find-part-by-type
206 (cdr handle) "application/pgp-signature" nil t))
207 (mm-set-handle-multipart-parameter
208 mm-security-handle 'gnus-info "Corrupted")
209 (throw 'error handle))
211 (narrow-to-region (point) (point))
212 (mm-insert-part part)
213 (goto-char (point-min))
214 (if (re-search-forward "^-----BEGIN PGP [^-]+-----\r?$" nil t)
215 (replace-match "-----BEGIN PGP SIGNATURE-----" t t))
216 (if (re-search-forward "^-----END PGP [^-]+-----\r?$" nil t)
217 (replace-match "-----END PGP SIGNATURE-----" t t)))
218 (let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*")))
219 (unless (condition-case err
221 (funcall mml2015-verify-function)
222 (if (get-buffer " *mailcrypt stderr temp")
223 (mm-set-handle-multipart-parameter
224 mm-security-handle 'gnus-details
225 (with-current-buffer " *mailcrypt stderr temp"
227 (if (get-buffer " *mailcrypt stdout temp")
228 (kill-buffer " *mailcrypt stdout temp"))
229 (if (get-buffer " *mailcrypt stderr temp")
230 (kill-buffer " *mailcrypt stderr temp"))
231 (if (get-buffer " *mailcrypt status temp")
232 (kill-buffer " *mailcrypt status temp"))
233 (if (get-buffer mc-gpg-debug-buffer)
234 (kill-buffer mc-gpg-debug-buffer)))
236 (mm-set-handle-multipart-parameter
237 mm-security-handle 'gnus-details (mml2015-format-error err))
240 (mm-set-handle-multipart-parameter
241 mm-security-handle 'gnus-details "Quit.")
243 (mm-set-handle-multipart-parameter
244 mm-security-handle 'gnus-info "Failed")
245 (throw 'error handle))))
246 (mm-set-handle-multipart-parameter
247 mm-security-handle 'gnus-info "OK")
250 (defun mml2015-mailcrypt-clear-verify ()
251 (let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*")))
252 (if (condition-case err
254 (funcall mml2015-verify-function)
255 (if (get-buffer " *mailcrypt stderr temp")
256 (mm-set-handle-multipart-parameter
257 mm-security-handle 'gnus-details
258 (with-current-buffer " *mailcrypt stderr temp"
260 (if (get-buffer " *mailcrypt stdout temp")
261 (kill-buffer " *mailcrypt stdout temp"))
262 (if (get-buffer " *mailcrypt stderr temp")
263 (kill-buffer " *mailcrypt stderr temp"))
264 (if (get-buffer " *mailcrypt status temp")
265 (kill-buffer " *mailcrypt status temp"))
266 (if (get-buffer mc-gpg-debug-buffer)
267 (kill-buffer mc-gpg-debug-buffer)))
269 (mm-set-handle-multipart-parameter
270 mm-security-handle 'gnus-details (mml2015-format-error err))
273 (mm-set-handle-multipart-parameter
274 mm-security-handle 'gnus-details "Quit.")
276 (mm-set-handle-multipart-parameter
277 mm-security-handle 'gnus-info "OK")
278 (mm-set-handle-multipart-parameter
279 mm-security-handle 'gnus-info "Failed"))))
281 (defun mml2015-mailcrypt-sign (cont)
282 (mc-sign-generic (message-options-get 'message-sender)
284 (let ((boundary (mml-compute-boundary cont))
286 (goto-char (point-min))
287 (unless (re-search-forward "^-----BEGIN PGP SIGNED MESSAGE-----\r?$" nil t)
288 (error "Cannot find signed begin line"))
289 (goto-char (match-beginning 0))
291 (unless (looking-at "Hash:[ \t]*\\([a-zA-Z0-9]+\\)")
292 (error "Cannot not find PGP hash"))
293 (setq hash (match-string 1))
294 (unless (re-search-forward "^$" nil t)
295 (error "Cannot not find PGP message"))
297 (delete-region (point-min) (point))
298 (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
300 (insert (format "\tmicalg=pgp-%s; protocol=\"application/pgp-signature\"\n"
302 (insert (format "\n--%s\n" boundary))
304 (goto-char (point-max))
305 (unless (re-search-backward "^-----END PGP SIGNATURE-----\r?$" nil t)
306 (error "Cannot find signature part"))
307 (replace-match "-----END PGP MESSAGE-----" t t)
308 (goto-char (match-beginning 0))
309 (unless (re-search-backward "^-----BEGIN PGP SIGNATURE-----\r?$"
311 (error "Cannot find signature part"))
312 (replace-match "-----BEGIN PGP MESSAGE-----" t t)
313 (goto-char (match-beginning 0))
315 (narrow-to-region point (point))
317 (while (re-search-forward "^- -" nil t)
318 (replace-match "-" t t))
319 (goto-char (point-max)))
320 (insert (format "--%s\n" boundary))
321 (insert "Content-Type: application/pgp-signature\n\n")
322 (goto-char (point-max))
323 (insert (format "--%s--\n" boundary))
324 (goto-char (point-max))))
326 (defun mml2015-mailcrypt-encrypt (cont &optional sign)
327 (let ((mc-pgp-always-sign
328 (or mc-pgp-always-sign
330 (eq t (or (message-options-get 'message-sign-encrypt)
332 'message-sign-encrypt
333 (or (y-or-n-p "Sign the message? ")
336 (mm-with-unibyte-current-buffer
338 (or (message-options-get 'message-recipients)
339 (message-options-set 'message-recipients
340 (mc-cleanup-recipient-headers
341 (read-string "Recipients: "))))
343 (message-options-get 'message-sender))))
344 (goto-char (point-min))
345 (unless (looking-at "-----BEGIN PGP MESSAGE-----")
346 (error "Fail to encrypt the message"))
347 (let ((boundary (mml-compute-boundary cont)))
348 (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n"
350 (insert "\tprotocol=\"application/pgp-encrypted\"\n\n")
351 (insert (format "--%s\n" boundary))
352 (insert "Content-Type: application/pgp-encrypted\n\n")
353 (insert "Version: 1\n\n")
354 (insert (format "--%s\n" boundary))
355 (insert "Content-Type: application/octet-stream\n\n")
356 (goto-char (point-max))
357 (insert (format "--%s--\n" boundary))
358 (goto-char (point-max))))
363 (autoload 'gpg-decrypt "gpg")
364 (autoload 'gpg-verify "gpg")
365 (autoload 'gpg-verify-cleartext "gpg")
366 (autoload 'gpg-sign-detached "gpg")
367 (autoload 'gpg-sign-encrypt "gpg")
368 (autoload 'gpg-encrypt "gpg")
369 (autoload 'gpg-passphrase-read "gpg"))
371 (defun mml2015-gpg-passphrase ()
372 (or (message-options-get 'gpg-passphrase)
373 (message-options-set 'gpg-passphrase (gpg-passphrase-read))))
375 (defun mml2015-gpg-decrypt-1 ()
376 (let ((cipher (current-buffer)) plain result)
377 (if (with-temp-buffer
379 (gpg-decrypt cipher (setq plain (current-buffer))
380 mml2015-result-buffer nil)
381 (mm-set-handle-multipart-parameter
382 mm-security-handle 'gnus-details
383 (with-current-buffer mml2015-result-buffer
387 (insert-buffer-substring plain)
388 (goto-char (point-min))
389 (while (search-forward "\r\n" nil t)
390 (replace-match "\n" t t))))
392 ;; Some wrong with the return value, check plain text buffer.
393 (if (> (point-max) (point-min))
397 (defun mml2015-gpg-decrypt (handle ctl)
398 (let ((mml2015-decrypt-function 'mml2015-gpg-decrypt-1))
399 (mml2015-mailcrypt-decrypt handle ctl)))
401 (defun mml2015-gpg-clear-decrypt ()
403 (setq result (mml2015-gpg-decrypt-1))
405 (mm-set-handle-multipart-parameter
406 mm-security-handle 'gnus-info "OK")
407 (mm-set-handle-multipart-parameter
408 mm-security-handle 'gnus-info "Failed"))))
410 (defun mml2015-gpg-pretty-print-fpr (fingerprint)
412 (fpr-length (string-width fingerprint))
415 (setq fingerprint (string-to-list fingerprint))
417 (setq fpr-length (- fpr-length 4))
418 (setq slice (butlast fingerprint fpr-length))
419 (setq fingerprint (nthcdr 4 fingerprint))
420 (setq n-slice (1+ n-slice))
426 (otherwise (concat " " slice))))))
429 (defun mml2015-gpg-extract-signature-details ()
430 (goto-char (point-min))
431 (let* ((expired (re-search-forward
432 "^\\[GNUPG:\\] SIGEXPIRED$"
434 (signer (and (re-search-forward
435 "^\\[GNUPG:\\] GOODSIG \\([0-9A-Za-z]*\\) \\(.*\\)$"
437 (cons (match-string 1) (match-string 2))))
438 (fprint (and (re-search-forward
439 "^\\[GNUPG:\\] VALIDSIG \\([0-9a-zA-Z]*\\) "
442 (trust (and (re-search-forward
443 "^\\[GNUPG:\\] \\(TRUST_.*\\)$"
447 (cdr (assoc trust mml2015-unabbrev-trust-alist))))
448 (cond ((and signer fprint)
450 (unless trust-good-enough-p
451 (concat "\nUntrusted, Fingerprint: "
452 (mml2015-gpg-pretty-print-fpr fprint)))
454 (format "\nWARNING: Signature from expired key (%s)"
457 "^\\(gpg: \\)?Good signature from \"\\(.*\\)\"$" nil t)
460 "From unknown user"))))
462 (defun mml2015-gpg-verify (handle ctl)
464 (let (part message signature info-is-set-p)
465 (unless (setq part (mm-find-raw-part-by-type
466 ctl (or (mm-handle-multipart-ctl-parameter
468 "application/pgp-signature")
470 (mm-set-handle-multipart-parameter
471 mm-security-handle 'gnus-info "Corrupted")
472 (throw 'error handle))
474 (setq message (current-buffer))
476 ;; Convert <LF> to <CR><LF> in verify mode. Sign and
477 ;; clearsign use --textmode. The conversion is not necessary.
478 ;; In clearverify, the conversion is not necessary either.
479 (goto-char (point-min))
482 (unless (eq (char-before) ?\r)
487 (setq signature (current-buffer))
488 (unless (setq part (mm-find-part-by-type
489 (cdr handle) "application/pgp-signature" nil t))
490 (mm-set-handle-multipart-parameter
491 mm-security-handle 'gnus-info "Corrupted")
492 (throw 'error handle))
493 (mm-insert-part part)
494 (unless (condition-case err
496 (gpg-verify message signature mml2015-result-buffer)
497 (mm-set-handle-multipart-parameter
498 mm-security-handle 'gnus-details
499 (with-current-buffer mml2015-result-buffer
502 (mm-set-handle-multipart-parameter
503 mm-security-handle 'gnus-details (mml2015-format-error err))
504 (mm-set-handle-multipart-parameter
505 mm-security-handle 'gnus-info "Error.")
506 (setq info-is-set-p t)
509 (mm-set-handle-multipart-parameter
510 mm-security-handle 'gnus-details "Quit.")
511 (mm-set-handle-multipart-parameter
512 mm-security-handle 'gnus-info "Quit.")
513 (setq info-is-set-p t)
515 (unless info-is-set-p
516 (mm-set-handle-multipart-parameter
517 mm-security-handle 'gnus-info "Failed"))
518 (throw 'error handle)))
519 (mm-set-handle-multipart-parameter
520 mm-security-handle 'gnus-info
521 (with-current-buffer mml2015-result-buffer
522 (mml2015-gpg-extract-signature-details))))
525 (defun mml2015-gpg-clear-verify ()
526 (if (condition-case err
528 (gpg-verify-cleartext (current-buffer) mml2015-result-buffer)
529 (mm-set-handle-multipart-parameter
530 mm-security-handle 'gnus-details
531 (with-current-buffer mml2015-result-buffer
534 (mm-set-handle-multipart-parameter
535 mm-security-handle 'gnus-details (mml2015-format-error err))
538 (mm-set-handle-multipart-parameter
539 mm-security-handle 'gnus-details "Quit.")
541 (mm-set-handle-multipart-parameter
542 mm-security-handle 'gnus-info
543 (with-current-buffer mml2015-result-buffer
544 (mml2015-gpg-extract-signature-details)))
545 (mm-set-handle-multipart-parameter
546 mm-security-handle 'gnus-info "Failed")))
548 (defun mml2015-gpg-sign (cont)
549 (let ((boundary (mml-compute-boundary cont))
550 (text (current-buffer)) signature)
551 (goto-char (point-max))
555 (unless (gpg-sign-detached text (setq signature (current-buffer))
556 mml2015-result-buffer
558 (message-options-get 'message-sender)
559 t t) ; armor & textmode
560 (unless (> (point-max) (point-min))
561 (pop-to-buffer mml2015-result-buffer)
562 (error "Sign error")))
563 (goto-char (point-min))
564 (while (re-search-forward "\r+$" nil t)
565 (replace-match "" t t))
567 (goto-char (point-min))
568 (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
570 ;;; FIXME: what is the micalg?
571 (insert "\tmicalg=pgp-sha1; protocol=\"application/pgp-signature\"\n")
572 (insert (format "\n--%s\n" boundary))
573 (goto-char (point-max))
574 (insert (format "\n--%s\n" boundary))
575 (insert "Content-Type: application/pgp-signature\n\n")
576 (insert-buffer-substring signature)
577 (goto-char (point-max))
578 (insert (format "--%s--\n" boundary))
579 (goto-char (point-max)))))
581 (defun mml2015-gpg-encrypt (cont &optional sign)
582 (let ((boundary (mml-compute-boundary cont))
583 (text (current-buffer))
585 (mm-with-unibyte-current-buffer
587 ;; set up a function to call the correct gpg encrypt routine
588 ;; with the right arguments. (FIXME: this should be done
590 (flet ((gpg-encrypt-func
591 (sign plaintext ciphertext result recipients &optional
592 passphrase sign-with-key armor textmode)
595 plaintext ciphertext result recipients passphrase
596 sign-with-key armor textmode)
598 plaintext ciphertext result recipients passphrase
600 (unless (gpg-encrypt-func
601 sign ; passed in when using signencrypt
602 text (setq cipher (current-buffer))
603 mml2015-result-buffer
606 (message-options-get 'message-recipients)
607 (message-options-set 'message-recipients
608 (read-string "Recipients: ")))
611 (message-options-get 'message-sender)
612 t t) ; armor & textmode
613 (unless (> (point-max) (point-min))
614 (pop-to-buffer mml2015-result-buffer)
615 (error "Encrypt error"))))
616 (goto-char (point-min))
617 (while (re-search-forward "\r+$" 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 (mml-compute-boundary cont))
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 (mml-compute-boundary cont)))
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