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."
91 :type '(repeat (cons (regexp :tag "GnuPG output regexp")
92 (boolean :tag "Trust key"))))
97 (autoload 'mailcrypt-decrypt "mailcrypt")
98 (autoload 'mailcrypt-verify "mailcrypt")
99 (autoload 'mc-pgp-always-sign "mailcrypt")
100 (autoload 'mc-encrypt-generic "mc-toplev")
101 (autoload 'mc-cleanup-recipient-headers "mc-toplev")
102 (autoload 'mc-sign-generic "mc-toplev"))
105 (defvar mc-default-scheme)
108 (defvar mml2015-decrypt-function 'mailcrypt-decrypt)
109 (defvar mml2015-verify-function 'mailcrypt-verify)
111 (defun mml2015-format-error (err)
112 (if (stringp (cadr err))
114 (format "%S" (cdr err))))
116 (defun mml2015-mailcrypt-decrypt (handle ctl)
118 (let (child handles result)
119 (unless (setq child (mm-find-part-by-type
121 "application/octet-stream" nil t))
122 (mm-set-handle-multipart-parameter
123 mm-security-handle 'gnus-info "Corrupted")
124 (throw 'error handle))
126 (mm-insert-part child)
129 (funcall mml2015-decrypt-function)
131 (mm-set-handle-multipart-parameter
132 mm-security-handle 'gnus-details (mml2015-format-error err))
135 (mm-set-handle-multipart-parameter
136 mm-security-handle 'gnus-details "Quit.")
139 (mm-set-handle-multipart-parameter
140 mm-security-handle 'gnus-info "Failed")
141 (throw 'error handle))
142 (setq handles (mm-dissect-buffer t)))
143 (mm-destroy-parts handle)
144 (mm-set-handle-multipart-parameter
145 mm-security-handle 'gnus-info
147 (let ((sig (with-current-buffer mml2015-result-buffer
148 (mml2015-gpg-extract-signature-details))))
149 (concat ", Signer: " sig))))
150 (if (listp (car handles))
154 (defun mml2015-mailcrypt-clear-decrypt ()
158 (funcall mml2015-decrypt-function)
160 (mm-set-handle-multipart-parameter
161 mm-security-handle 'gnus-details (mml2015-format-error err))
164 (mm-set-handle-multipart-parameter
165 mm-security-handle 'gnus-details "Quit.")
168 (mm-set-handle-multipart-parameter
169 mm-security-handle 'gnus-info "OK")
170 (mm-set-handle-multipart-parameter
171 mm-security-handle 'gnus-info "Failed"))))
173 (defun mml2015-fix-micalg (alg)
175 ;; Mutt/1.2.5i has seen sending micalg=php-sha1
176 (upcase (if (string-match "^p[gh]p-" alg)
177 (substring alg (match-end 0))
180 (defun mml2015-mailcrypt-verify (handle ctl)
183 (unless (setq part (mm-find-raw-part-by-type
184 ctl (or (mm-handle-multipart-ctl-parameter
186 "application/pgp-signature")
188 (mm-set-handle-multipart-parameter
189 mm-security-handle 'gnus-info "Corrupted")
190 (throw 'error handle))
192 (insert "-----BEGIN PGP SIGNED MESSAGE-----\n")
193 (insert (format "Hash: %s\n\n"
194 (or (mml2015-fix-micalg
195 (mm-handle-multipart-ctl-parameter
199 (narrow-to-region (point) (point))
201 (goto-char (point-min))
203 (if (looking-at "^-")
206 (unless (setq part (mm-find-part-by-type
207 (cdr handle) "application/pgp-signature" nil t))
208 (mm-set-handle-multipart-parameter
209 mm-security-handle 'gnus-info "Corrupted")
210 (throw 'error handle))
212 (narrow-to-region (point) (point))
213 (mm-insert-part part)
214 (goto-char (point-min))
215 (if (re-search-forward "^-----BEGIN PGP [^-]+-----\r?$" nil t)
216 (replace-match "-----BEGIN PGP SIGNATURE-----" t t))
217 (if (re-search-forward "^-----END PGP [^-]+-----\r?$" nil t)
218 (replace-match "-----END PGP SIGNATURE-----" t t)))
219 (let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*")))
220 (unless (condition-case err
222 (funcall mml2015-verify-function)
223 (if (get-buffer " *mailcrypt stderr temp")
224 (mm-set-handle-multipart-parameter
225 mm-security-handle 'gnus-details
226 (with-current-buffer " *mailcrypt stderr temp"
228 (if (get-buffer " *mailcrypt stdout temp")
229 (kill-buffer " *mailcrypt stdout temp"))
230 (if (get-buffer " *mailcrypt stderr temp")
231 (kill-buffer " *mailcrypt stderr temp"))
232 (if (get-buffer " *mailcrypt status temp")
233 (kill-buffer " *mailcrypt status temp"))
234 (if (get-buffer mc-gpg-debug-buffer)
235 (kill-buffer mc-gpg-debug-buffer)))
237 (mm-set-handle-multipart-parameter
238 mm-security-handle 'gnus-details (mml2015-format-error err))
241 (mm-set-handle-multipart-parameter
242 mm-security-handle 'gnus-details "Quit.")
244 (mm-set-handle-multipart-parameter
245 mm-security-handle 'gnus-info "Failed")
246 (throw 'error handle))))
247 (mm-set-handle-multipart-parameter
248 mm-security-handle 'gnus-info "OK")
251 (defun mml2015-mailcrypt-clear-verify ()
252 (let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*")))
253 (if (condition-case err
255 (funcall mml2015-verify-function)
256 (if (get-buffer " *mailcrypt stderr temp")
257 (mm-set-handle-multipart-parameter
258 mm-security-handle 'gnus-details
259 (with-current-buffer " *mailcrypt stderr temp"
261 (if (get-buffer " *mailcrypt stdout temp")
262 (kill-buffer " *mailcrypt stdout temp"))
263 (if (get-buffer " *mailcrypt stderr temp")
264 (kill-buffer " *mailcrypt stderr temp"))
265 (if (get-buffer " *mailcrypt status temp")
266 (kill-buffer " *mailcrypt status temp"))
267 (if (get-buffer mc-gpg-debug-buffer)
268 (kill-buffer mc-gpg-debug-buffer)))
270 (mm-set-handle-multipart-parameter
271 mm-security-handle 'gnus-details (mml2015-format-error err))
274 (mm-set-handle-multipart-parameter
275 mm-security-handle 'gnus-details "Quit.")
277 (mm-set-handle-multipart-parameter
278 mm-security-handle 'gnus-info "OK")
279 (mm-set-handle-multipart-parameter
280 mm-security-handle 'gnus-info "Failed"))))
282 (defun mml2015-mailcrypt-sign (cont)
283 (mc-sign-generic (message-options-get 'message-sender)
285 (let ((boundary (mml-compute-boundary cont))
287 (goto-char (point-min))
288 (unless (re-search-forward "^-----BEGIN PGP SIGNED MESSAGE-----\r?$" nil t)
289 (error "Cannot find signed begin line"))
290 (goto-char (match-beginning 0))
292 (unless (looking-at "Hash:[ \t]*\\([a-zA-Z0-9]+\\)")
293 (error "Cannot not find PGP hash"))
294 (setq hash (match-string 1))
295 (unless (re-search-forward "^$" nil t)
296 (error "Cannot not find PGP message"))
298 (delete-region (point-min) (point))
299 (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
301 (insert (format "\tmicalg=pgp-%s; protocol=\"application/pgp-signature\"\n"
303 (insert (format "\n--%s\n" boundary))
305 (goto-char (point-max))
306 (unless (re-search-backward "^-----END PGP SIGNATURE-----\r?$" nil t)
307 (error "Cannot find signature part"))
308 (replace-match "-----END PGP MESSAGE-----" t t)
309 (goto-char (match-beginning 0))
310 (unless (re-search-backward "^-----BEGIN PGP SIGNATURE-----\r?$"
312 (error "Cannot find signature part"))
313 (replace-match "-----BEGIN PGP MESSAGE-----" t t)
314 (goto-char (match-beginning 0))
316 (narrow-to-region point (point))
318 (while (re-search-forward "^- -" nil t)
319 (replace-match "-" t t))
320 (goto-char (point-max)))
321 (insert (format "--%s\n" boundary))
322 (insert "Content-Type: application/pgp-signature\n\n")
323 (goto-char (point-max))
324 (insert (format "--%s--\n" boundary))
325 (goto-char (point-max))))
327 (defun mml2015-mailcrypt-encrypt (cont &optional sign)
328 (let ((mc-pgp-always-sign
329 (or mc-pgp-always-sign
331 (eq t (or (message-options-get 'message-sign-encrypt)
333 'message-sign-encrypt
334 (or (y-or-n-p "Sign the message? ")
337 (mm-with-unibyte-current-buffer
339 (or (message-options-get 'message-recipients)
340 (message-options-set 'message-recipients
341 (mc-cleanup-recipient-headers
342 (read-string "Recipients: "))))
344 (message-options-get 'message-sender))))
345 (goto-char (point-min))
346 (unless (looking-at "-----BEGIN PGP MESSAGE-----")
347 (error "Fail to encrypt the message"))
348 (let ((boundary (mml-compute-boundary cont)))
349 (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n"
351 (insert "\tprotocol=\"application/pgp-encrypted\"\n\n")
352 (insert (format "--%s\n" boundary))
353 (insert "Content-Type: application/pgp-encrypted\n\n")
354 (insert "Version: 1\n\n")
355 (insert (format "--%s\n" boundary))
356 (insert "Content-Type: application/octet-stream\n\n")
357 (goto-char (point-max))
358 (insert (format "--%s--\n" boundary))
359 (goto-char (point-max))))
364 (autoload 'gpg-decrypt "gpg")
365 (autoload 'gpg-verify "gpg")
366 (autoload 'gpg-verify-cleartext "gpg")
367 (autoload 'gpg-sign-detached "gpg")
368 (autoload 'gpg-sign-encrypt "gpg")
369 (autoload 'gpg-encrypt "gpg")
370 (autoload 'gpg-passphrase-read "gpg"))
372 (defun mml2015-gpg-passphrase ()
373 (or (message-options-get 'gpg-passphrase)
374 (message-options-set 'gpg-passphrase (gpg-passphrase-read))))
376 (defun mml2015-gpg-decrypt-1 ()
377 (let ((cipher (current-buffer)) plain result)
378 (if (with-temp-buffer
380 (gpg-decrypt cipher (setq plain (current-buffer))
381 mml2015-result-buffer nil)
382 (mm-set-handle-multipart-parameter
383 mm-security-handle 'gnus-details
384 (with-current-buffer mml2015-result-buffer
388 (insert-buffer-substring plain)
389 (goto-char (point-min))
390 (while (search-forward "\r\n" nil t)
391 (replace-match "\n" t t))))
393 ;; Some wrong with the return value, check plain text buffer.
394 (if (> (point-max) (point-min))
398 (defun mml2015-gpg-decrypt (handle ctl)
399 (let ((mml2015-decrypt-function 'mml2015-gpg-decrypt-1))
400 (mml2015-mailcrypt-decrypt handle ctl)))
402 (defun mml2015-gpg-clear-decrypt ()
404 (setq result (mml2015-gpg-decrypt-1))
406 (mm-set-handle-multipart-parameter
407 mm-security-handle 'gnus-info "OK")
408 (mm-set-handle-multipart-parameter
409 mm-security-handle 'gnus-info "Failed"))))
411 (defun mml2015-gpg-pretty-print-fpr (fingerprint)
413 (fpr-length (string-width fingerprint))
416 (setq fingerprint (string-to-list fingerprint))
418 (setq fpr-length (- fpr-length 4))
419 (setq slice (butlast fingerprint fpr-length))
420 (setq fingerprint (nthcdr 4 fingerprint))
421 (setq n-slice (1+ n-slice))
427 (otherwise (concat " " slice))))))
430 (defun mml2015-gpg-extract-signature-details ()
431 (goto-char (point-min))
432 (let* ((expired (re-search-forward
433 "^\\[GNUPG:\\] SIGEXPIRED$"
435 (signer (and (re-search-forward
436 "^\\[GNUPG:\\] GOODSIG \\([0-9A-Za-z]*\\) \\(.*\\)$"
438 (cons (match-string 1) (match-string 2))))
439 (fprint (and (re-search-forward
440 "^\\[GNUPG:\\] VALIDSIG \\([0-9a-zA-Z]*\\) "
443 (trust (and (re-search-forward
444 "^\\[GNUPG:\\] \\(TRUST_.*\\)$"
448 (cdr (assoc trust mml2015-unabbrev-trust-alist))))
449 (cond ((and signer fprint)
451 (unless trust-good-enough-p
452 (concat "\nUntrusted, Fingerprint: "
453 (mml2015-gpg-pretty-print-fpr fprint)))
455 (format "\nWARNING: Signature from expired key (%s)"
458 "^\\(gpg: \\)?Good signature from \"\\(.*\\)\"$" nil t)
461 "From unknown user"))))
463 (defun mml2015-gpg-verify (handle ctl)
465 (let (part message signature info-is-set-p)
466 (unless (setq part (mm-find-raw-part-by-type
467 ctl (or (mm-handle-multipart-ctl-parameter
469 "application/pgp-signature")
471 (mm-set-handle-multipart-parameter
472 mm-security-handle 'gnus-info "Corrupted")
473 (throw 'error handle))
475 (setq message (current-buffer))
477 ;; Convert <LF> to <CR><LF> in verify mode. Sign and
478 ;; clearsign use --textmode. The conversion is not necessary.
479 ;; In clearverify, the conversion is not necessary either.
480 (goto-char (point-min))
483 (unless (eq (char-before) ?\r)
488 (setq signature (current-buffer))
489 (unless (setq part (mm-find-part-by-type
490 (cdr handle) "application/pgp-signature" nil t))
491 (mm-set-handle-multipart-parameter
492 mm-security-handle 'gnus-info "Corrupted")
493 (throw 'error handle))
494 (mm-insert-part part)
495 (unless (condition-case err
497 (gpg-verify message signature mml2015-result-buffer)
498 (mm-set-handle-multipart-parameter
499 mm-security-handle 'gnus-details
500 (with-current-buffer mml2015-result-buffer
503 (mm-set-handle-multipart-parameter
504 mm-security-handle 'gnus-details (mml2015-format-error err))
505 (mm-set-handle-multipart-parameter
506 mm-security-handle 'gnus-info "Error.")
507 (setq info-is-set-p t)
510 (mm-set-handle-multipart-parameter
511 mm-security-handle 'gnus-details "Quit.")
512 (mm-set-handle-multipart-parameter
513 mm-security-handle 'gnus-info "Quit.")
514 (setq info-is-set-p t)
516 (unless info-is-set-p
517 (mm-set-handle-multipart-parameter
518 mm-security-handle 'gnus-info "Failed"))
519 (throw 'error handle)))
520 (mm-set-handle-multipart-parameter
521 mm-security-handle 'gnus-info
522 (with-current-buffer mml2015-result-buffer
523 (mml2015-gpg-extract-signature-details))))
526 (defun mml2015-gpg-clear-verify ()
527 (if (condition-case err
529 (gpg-verify-cleartext (current-buffer) mml2015-result-buffer)
530 (mm-set-handle-multipart-parameter
531 mm-security-handle 'gnus-details
532 (with-current-buffer mml2015-result-buffer
535 (mm-set-handle-multipart-parameter
536 mm-security-handle 'gnus-details (mml2015-format-error err))
539 (mm-set-handle-multipart-parameter
540 mm-security-handle 'gnus-details "Quit.")
542 (mm-set-handle-multipart-parameter
543 mm-security-handle 'gnus-info
544 (with-current-buffer mml2015-result-buffer
545 (mml2015-gpg-extract-signature-details)))
546 (mm-set-handle-multipart-parameter
547 mm-security-handle 'gnus-info "Failed")))
549 (defun mml2015-gpg-sign (cont)
550 (let ((boundary (mml-compute-boundary cont))
551 (text (current-buffer)) signature)
552 (goto-char (point-max))
556 (unless (gpg-sign-detached text (setq signature (current-buffer))
557 mml2015-result-buffer
559 (message-options-get 'message-sender)
560 t t) ; armor & textmode
561 (unless (> (point-max) (point-min))
562 (pop-to-buffer mml2015-result-buffer)
563 (error "Sign error")))
564 (goto-char (point-min))
565 (while (re-search-forward "\r+$" nil t)
566 (replace-match "" t t))
568 (goto-char (point-min))
569 (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
571 ;;; FIXME: what is the micalg?
572 (insert "\tmicalg=pgp-sha1; protocol=\"application/pgp-signature\"\n")
573 (insert (format "\n--%s\n" boundary))
574 (goto-char (point-max))
575 (insert (format "\n--%s\n" boundary))
576 (insert "Content-Type: application/pgp-signature\n\n")
577 (insert-buffer-substring signature)
578 (goto-char (point-max))
579 (insert (format "--%s--\n" boundary))
580 (goto-char (point-max)))))
582 (defun mml2015-gpg-encrypt (cont &optional sign)
583 (let ((boundary (mml-compute-boundary cont))
584 (text (current-buffer))
586 (mm-with-unibyte-current-buffer
588 ;; set up a function to call the correct gpg encrypt routine
589 ;; with the right arguments. (FIXME: this should be done
591 (flet ((gpg-encrypt-func
592 (sign plaintext ciphertext result recipients &optional
593 passphrase sign-with-key armor textmode)
596 plaintext ciphertext result recipients passphrase
597 sign-with-key armor textmode)
599 plaintext ciphertext result recipients passphrase
601 (unless (gpg-encrypt-func
602 sign ; passed in when using signencrypt
603 text (setq cipher (current-buffer))
604 mml2015-result-buffer
607 (message-options-get 'message-recipients)
608 (message-options-set 'message-recipients
609 (read-string "Recipients: ")))
612 (message-options-get 'message-sender)
613 t t) ; armor & textmode
614 (unless (> (point-max) (point-min))
615 (pop-to-buffer mml2015-result-buffer)
616 (error "Encrypt error"))))
617 (goto-char (point-min))
618 (while (re-search-forward "\r+$" nil t)
619 (replace-match "" t t))
621 (delete-region (point-min) (point-max))
622 (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n"
624 (insert "\tprotocol=\"application/pgp-encrypted\"\n\n")
625 (insert (format "--%s\n" boundary))
626 (insert "Content-Type: application/pgp-encrypted\n\n")
627 (insert "Version: 1\n\n")
628 (insert (format "--%s\n" boundary))
629 (insert "Content-Type: application/octet-stream\n\n")
630 (insert-buffer-substring cipher)
631 (goto-char (point-max))
632 (insert (format "--%s--\n" boundary))
633 (goto-char (point-max))))))
638 (defvar pgg-errors-buffer)
639 (defvar pgg-output-buffer))
642 (autoload 'pgg-decrypt-region "pgg")
643 (autoload 'pgg-verify-region "pgg")
644 (autoload 'pgg-sign-region "pgg")
645 (autoload 'pgg-encrypt-region "pgg"))
647 (defun mml2015-pgg-decrypt (handle ctl)
649 (let ((pgg-errors-buffer mml2015-result-buffer)
650 child handles result decrypt-status)
651 (unless (setq child (mm-find-part-by-type
653 "application/octet-stream" nil t))
654 (mm-set-handle-multipart-parameter
655 mm-security-handle 'gnus-info "Corrupted")
656 (throw 'error handle))
658 (mm-insert-part child)
659 (if (condition-case err
661 (pgg-decrypt-region (point-min) (point-max))
663 (with-current-buffer mml2015-result-buffer
665 (mm-set-handle-multipart-parameter
666 mm-security-handle 'gnus-details
669 (mm-set-handle-multipart-parameter
670 mm-security-handle 'gnus-details (mml2015-format-error err))
673 (mm-set-handle-multipart-parameter
674 mm-security-handle 'gnus-details "Quit.")
676 (with-current-buffer pgg-output-buffer
677 (goto-char (point-min))
678 (while (search-forward "\r\n" nil t)
679 (replace-match "\n" t t))
680 (setq handles (mm-dissect-buffer t))
681 (mm-destroy-parts handle)
682 (mm-set-handle-multipart-parameter
683 mm-security-handle 'gnus-info "OK")
684 (mm-set-handle-multipart-parameter
685 mm-security-handle 'gnus-details
686 (concat decrypt-status
687 (when (stringp (car handles))
688 "\n" (mm-handle-multipart-ctl-parameter
689 handles 'gnus-details))))
690 (if (listp (car handles))
693 (mm-set-handle-multipart-parameter
694 mm-security-handle 'gnus-info "Failed")
695 (throw 'error handle))))))
697 (defun mml2015-pgg-clear-decrypt ()
698 (let ((pgg-errors-buffer mml2015-result-buffer))
700 (pgg-decrypt-region (point-min) (point-max))
701 (mm-set-handle-multipart-parameter
702 mm-security-handle 'gnus-details
703 (with-current-buffer mml2015-result-buffer
707 (insert-buffer-substring pgg-output-buffer)
708 (goto-char (point-min))
709 (while (search-forward "\r\n" nil t)
710 (replace-match "\n" t t))
711 (mm-set-handle-multipart-parameter
712 mm-security-handle 'gnus-info "OK"))
713 (mm-set-handle-multipart-parameter
714 mm-security-handle 'gnus-info "Failed"))))
716 (defun mml2015-pgg-verify (handle ctl)
717 (let ((pgg-errors-buffer mml2015-result-buffer)
718 signature-file part signature)
719 (if (or (null (setq part (mm-find-raw-part-by-type
720 ctl (or (mm-handle-multipart-ctl-parameter
722 "application/pgp-signature")
724 (null (setq signature (mm-find-part-by-type
725 (cdr handle) "application/pgp-signature" nil t))))
727 (mm-set-handle-multipart-parameter
728 mm-security-handle 'gnus-info "Corrupted")
732 ;; Convert <LF> to <CR><LF> in verify mode. Sign and
733 ;; clearsign use --textmode. The conversion is not necessary.
734 ;; In clearverify, the conversion is not necessary either.
735 (goto-char (point-min))
738 (unless (eq (char-before) ?\r)
742 (with-temp-file (setq signature-file (mm-make-temp-file "pgg"))
743 (mm-insert-part signature))
744 (if (condition-case err
746 (pgg-verify-region (point-min) (point-max)
748 (goto-char (point-min))
749 (while (search-forward "\r\n" nil t)
750 (replace-match "\n" t t))
751 (mm-set-handle-multipart-parameter
752 mm-security-handle 'gnus-details
753 (concat (with-current-buffer pgg-output-buffer
755 (with-current-buffer pgg-errors-buffer
758 (mm-set-handle-multipart-parameter
759 mm-security-handle 'gnus-details (mml2015-format-error err))
762 (mm-set-handle-multipart-parameter
763 mm-security-handle 'gnus-details "Quit.")
766 (delete-file signature-file)
767 (mm-set-handle-multipart-parameter
768 mm-security-handle 'gnus-info
769 (with-current-buffer pgg-errors-buffer
770 (mml2015-gpg-extract-signature-details))))
771 (delete-file signature-file)
772 (mm-set-handle-multipart-parameter
773 mm-security-handle 'gnus-info "Failed")))))
776 (defun mml2015-pgg-clear-verify ()
777 (let ((pgg-errors-buffer mml2015-result-buffer)
778 (text (buffer-string))
779 (coding-system buffer-file-coding-system))
780 (if (condition-case err
782 (mm-with-unibyte-buffer
783 (insert (encode-coding-string text coding-system))
784 (pgg-verify-region (point-min) (point-max) nil t))
785 (goto-char (point-min))
786 (while (search-forward "\r\n" nil t)
787 (replace-match "\n" t t))
788 (mm-set-handle-multipart-parameter
789 mm-security-handle 'gnus-details
790 (concat (with-current-buffer pgg-output-buffer
792 (with-current-buffer pgg-errors-buffer
795 (mm-set-handle-multipart-parameter
796 mm-security-handle 'gnus-details (mml2015-format-error err))
799 (mm-set-handle-multipart-parameter
800 mm-security-handle 'gnus-details "Quit.")
802 (mm-set-handle-multipart-parameter
803 mm-security-handle 'gnus-info
804 (with-current-buffer pgg-errors-buffer
805 (mml2015-gpg-extract-signature-details)))
806 (mm-set-handle-multipart-parameter
807 mm-security-handle 'gnus-info "Failed"))))
809 (defun mml2015-pgg-sign (cont)
810 (let ((pgg-errors-buffer mml2015-result-buffer)
811 (boundary (mml-compute-boundary cont))
812 (pgg-default-user-id (or (message-options-get 'mml-sender)
813 pgg-default-user-id)))
814 (unless (pgg-sign-region (point-min) (point-max))
815 (pop-to-buffer mml2015-result-buffer)
816 (error "Sign error"))
817 (goto-char (point-min))
818 (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
820 ;;; FIXME: what is the micalg?
821 (insert "\tmicalg=pgp-sha1; protocol=\"application/pgp-signature\"\n")
822 (insert (format "\n--%s\n" boundary))
823 (goto-char (point-max))
824 (insert (format "\n--%s\n" boundary))
825 (insert "Content-Type: application/pgp-signature\n\n")
826 (insert-buffer-substring pgg-output-buffer)
827 (goto-char (point-max))
828 (insert (format "--%s--\n" boundary))
829 (goto-char (point-max))))
831 (defun mml2015-pgg-encrypt (cont &optional sign)
832 (let ((pgg-errors-buffer mml2015-result-buffer)
833 (boundary (mml-compute-boundary cont)))
834 (unless (pgg-encrypt-region (point-min) (point-max)
837 (message-options-get 'message-recipients)
838 (message-options-set 'message-recipients
839 (read-string "Recipients: ")))
842 (pop-to-buffer mml2015-result-buffer)
843 (error "Encrypt error"))
844 (delete-region (point-min) (point-max))
845 (goto-char (point-min))
846 (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n"
848 (insert "\tprotocol=\"application/pgp-encrypted\"\n\n")
849 (insert (format "--%s\n" boundary))
850 (insert "Content-Type: application/pgp-encrypted\n\n")
851 (insert "Version: 1\n\n")
852 (insert (format "--%s\n" boundary))
853 (insert "Content-Type: application/octet-stream\n\n")
854 (insert-buffer-substring pgg-output-buffer)
855 (goto-char (point-max))
856 (insert (format "--%s--\n" boundary))
857 (goto-char (point-max))))
861 (defun mml2015-clean-buffer ()
862 (if (gnus-buffer-live-p mml2015-result-buffer)
863 (with-current-buffer mml2015-result-buffer
866 (setq mml2015-result-buffer
867 (gnus-get-buffer-create "*MML2015 Result*"))
870 (defsubst mml2015-clear-decrypt-function ()
871 (nth 6 (assq mml2015-use mml2015-function-alist)))
873 (defsubst mml2015-clear-verify-function ()
874 (nth 5 (assq mml2015-use mml2015-function-alist)))
877 (defun mml2015-decrypt (handle ctl)
878 (mml2015-clean-buffer)
879 (let ((func (nth 4 (assq mml2015-use mml2015-function-alist))))
881 (funcall func handle ctl)
885 (defun mml2015-decrypt-test (handle ctl)
889 (defun mml2015-verify (handle ctl)
890 (mml2015-clean-buffer)
891 (let ((func (nth 3 (assq mml2015-use mml2015-function-alist))))
893 (funcall func handle ctl)
897 (defun mml2015-verify-test (handle ctl)
901 (defun mml2015-encrypt (cont &optional sign)
902 (mml2015-clean-buffer)
903 (let ((func (nth 2 (assq mml2015-use mml2015-function-alist))))
905 (funcall func cont sign)
906 (error "Cannot find encrypt function"))))
909 (defun mml2015-sign (cont)
910 (mml2015-clean-buffer)
911 (let ((func (nth 1 (assq mml2015-use mml2015-function-alist))))
914 (error "Cannot find sign function"))))
917 (defun mml2015-self-encrypt ()
918 (mml2015-encrypt nil))
922 ;;; mml2015.el ends here