;;; mml2015.el --- MIME Security with Pretty Good Privacy (PGP) ;; Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc. ;; Author: Shenghuo Zhu ;; Keywords: PGP MIME MML ;; 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 2, 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., 59 Temple Place - Suite 330, ;; Boston, MA 02111-1307, USA. ;;; Commentary: ;; RFC 2015 is updated by RFC 3156, this file should be compatible ;; with both. ;;; Code: (eval-when-compile (require 'cl)) (require 'mm-decode) (require 'mm-util) (defvar mml2015-use (or (progn (ignore-errors (require 'pgg)) (and (fboundp 'pgg-sign-region) 'pgg)) (progn (ignore-errors (require 'gpg)) (and (fboundp 'gpg-sign-detached) 'gpg)) (progn (ignore-errors (load "mc-toplev")) (and (fboundp 'mc-encrypt-generic) (fboundp 'mc-sign-generic) (fboundp 'mc-cleanup-recipient-headers) 'mailcrypt))) "The package used for PGP/MIME.") ;; Something is not RFC2015. (defvar mml2015-function-alist '((mailcrypt mml2015-mailcrypt-sign mml2015-mailcrypt-encrypt mml2015-mailcrypt-verify mml2015-mailcrypt-decrypt mml2015-mailcrypt-clear-verify mml2015-mailcrypt-clear-decrypt) (gpg mml2015-gpg-sign mml2015-gpg-encrypt mml2015-gpg-verify mml2015-gpg-decrypt mml2015-gpg-clear-verify mml2015-gpg-clear-decrypt) (pgg mml2015-pgg-sign mml2015-pgg-encrypt mml2015-pgg-verify mml2015-pgg-decrypt mml2015-pgg-clear-verify mml2015-pgg-clear-decrypt)) "Alist of PGP/MIME functions.") (defvar mml2015-result-buffer nil) (defcustom mml2015-unabbrev-trust-alist '(("TRUST_UNDEFINED" . nil) ("TRUST_NEVER" . nil) ("TRUST_MARGINAL" . t) ("TRUST_FULLY" . t) ("TRUST_ULTIMATE" . t)) "Map GnuPG trust output values to a boolean saying if you trust the key." :type '(repeat (cons (regexp :tag "GnuPG output regexp") (boolean :tag "Trust key")))) ;;; mailcrypt wrapper (eval-and-compile (autoload 'mailcrypt-decrypt "mailcrypt") (autoload 'mailcrypt-verify "mailcrypt") (autoload 'mc-pgp-always-sign "mailcrypt") (autoload 'mc-encrypt-generic "mc-toplev") (autoload 'mc-cleanup-recipient-headers "mc-toplev") (autoload 'mc-sign-generic "mc-toplev")) (eval-when-compile (defvar mc-default-scheme) (defvar mc-schemes)) (defvar mml2015-decrypt-function 'mailcrypt-decrypt) (defvar mml2015-verify-function 'mailcrypt-verify) (defun mml2015-format-error (err) (if (stringp (cadr err)) (cadr err) (format "%S" (cdr err)))) (defun mml2015-mailcrypt-decrypt (handle ctl) (catch 'error (let (child handles result) (unless (setq child (mm-find-part-by-type (cdr handle) "application/octet-stream" nil t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Corrupted") (throw 'error handle)) (with-temp-buffer (mm-insert-part child) (setq result (condition-case err (funcall mml2015-decrypt-function) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") nil))) (unless (car result) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed") (throw 'error handle)) (setq handles (mm-dissect-buffer t))) (mm-destroy-parts handle) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info (concat "OK" (let ((sig (with-current-buffer mml2015-result-buffer (mml2015-gpg-extract-signature-details)))) (concat ", Signer: " sig)))) (if (listp (car handles)) handles (list handles))))) (defun mml2015-mailcrypt-clear-decrypt () (let (result) (setq result (condition-case err (funcall mml2015-decrypt-function) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") nil))) (if (car result) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "OK") (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed")))) (defun mml2015-fix-micalg (alg) (and alg ;; Mutt/1.2.5i has seen sending micalg=php-sha1 (upcase (if (string-match "^p[gh]p-" alg) (substring alg (match-end 0)) alg)))) (defun mml2015-mailcrypt-verify (handle ctl) (catch 'error (let (part) (unless (setq part (mm-find-raw-part-by-type ctl (or (mm-handle-multipart-ctl-parameter ctl 'protocol) "application/pgp-signature") t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Corrupted") (throw 'error handle)) (with-temp-buffer (insert "-----BEGIN PGP SIGNED MESSAGE-----\n") (insert (format "Hash: %s\n\n" (or (mml2015-fix-micalg (mm-handle-multipart-ctl-parameter ctl 'micalg)) "SHA1"))) (save-restriction (narrow-to-region (point) (point)) (insert part "\n") (goto-char (point-min)) (while (not (eobp)) (if (looking-at "^-") (insert "- ")) (forward-line))) (unless (setq part (mm-find-part-by-type (cdr handle) "application/pgp-signature" nil t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Corrupted") (throw 'error handle)) (save-restriction (narrow-to-region (point) (point)) (mm-insert-part part) (goto-char (point-min)) (if (re-search-forward "^-----BEGIN PGP [^-]+-----\r?$" nil t) (replace-match "-----BEGIN PGP SIGNATURE-----" t t)) (if (re-search-forward "^-----END PGP [^-]+-----\r?$" nil t) (replace-match "-----END PGP SIGNATURE-----" t t))) (let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*"))) (unless (condition-case err (prog1 (funcall mml2015-verify-function) (if (get-buffer " *mailcrypt stderr temp") (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (with-current-buffer " *mailcrypt stderr temp" (buffer-string)))) (if (get-buffer " *mailcrypt stdout temp") (kill-buffer " *mailcrypt stdout temp")) (if (get-buffer " *mailcrypt stderr temp") (kill-buffer " *mailcrypt stderr temp")) (if (get-buffer " *mailcrypt status temp") (kill-buffer " *mailcrypt status temp")) (if (get-buffer mc-gpg-debug-buffer) (kill-buffer mc-gpg-debug-buffer))) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") nil)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed") (throw 'error handle)))) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "OK") handle))) (defun mml2015-mailcrypt-clear-verify () (let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*"))) (if (condition-case err (prog1 (funcall mml2015-verify-function) (if (get-buffer " *mailcrypt stderr temp") (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (with-current-buffer " *mailcrypt stderr temp" (buffer-string)))) (if (get-buffer " *mailcrypt stdout temp") (kill-buffer " *mailcrypt stdout temp")) (if (get-buffer " *mailcrypt stderr temp") (kill-buffer " *mailcrypt stderr temp")) (if (get-buffer " *mailcrypt status temp") (kill-buffer " *mailcrypt status temp")) (if (get-buffer mc-gpg-debug-buffer) (kill-buffer mc-gpg-debug-buffer))) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") nil)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "OK") (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed")))) (defun mml2015-mailcrypt-sign (cont) (mc-sign-generic (message-options-get 'message-sender) nil nil nil nil) (let ((boundary (funcall mml-boundary-function (incf mml-multipart-number))) hash point) (goto-char (point-min)) (unless (re-search-forward "^-----BEGIN PGP SIGNED MESSAGE-----\r?$" nil t) (error "Cannot find signed begin line")) (goto-char (match-beginning 0)) (forward-line 1) (unless (looking-at "Hash:[ \t]*\\([a-zA-Z0-9]+\\)") (error "Cannot not find PGP hash")) (setq hash (match-string 1)) (unless (re-search-forward "^$" nil t) (error "Cannot not find PGP message")) (forward-line 1) (delete-region (point-min) (point)) (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n" boundary)) (insert (format "\tmicalg=pgp-%s; protocol=\"application/pgp-signature\"\n" (downcase hash))) (insert (format "\n--%s\n" boundary)) (setq point (point)) (goto-char (point-max)) (unless (re-search-backward "^-----END PGP SIGNATURE-----\r?$" nil t) (error "Cannot find signature part")) (replace-match "-----END PGP MESSAGE-----" t t) (goto-char (match-beginning 0)) (unless (re-search-backward "^-----BEGIN PGP SIGNATURE-----\r?$" nil t) (error "Cannot find signature part")) (replace-match "-----BEGIN PGP MESSAGE-----" t t) (goto-char (match-beginning 0)) (save-restriction (narrow-to-region point (point)) (goto-char point) (while (re-search-forward "^- -" nil t) (replace-match "-" t t)) (goto-char (point-max))) (insert (format "--%s\n" boundary)) (insert "Content-Type: application/pgp-signature\n\n") (goto-char (point-max)) (insert (format "--%s--\n" boundary)) (goto-char (point-max)))) (defun mml2015-mailcrypt-encrypt (cont &optional sign) (let ((mc-pgp-always-sign (or mc-pgp-always-sign sign (eq t (or (message-options-get 'message-sign-encrypt) (message-options-set 'message-sign-encrypt (or (y-or-n-p "Sign the message? ") 'not)))) 'never))) (mm-with-unibyte-current-buffer-mule4 (mc-encrypt-generic (or (message-options-get 'message-recipients) (message-options-set 'message-recipients (mc-cleanup-recipient-headers (read-string "Recipients: ")))) nil nil nil (message-options-get 'message-sender)))) (goto-char (point-min)) (unless (looking-at "-----BEGIN PGP MESSAGE-----") (error "Fail to encrypt the message")) (let ((boundary (funcall mml-boundary-function (incf mml-multipart-number)))) (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n" boundary)) (insert "\tprotocol=\"application/pgp-encrypted\"\n\n") (insert (format "--%s\n" boundary)) (insert "Content-Type: application/pgp-encrypted\n\n") (insert "Version: 1\n\n") (insert (format "--%s\n" boundary)) (insert "Content-Type: application/octet-stream\n\n") (goto-char (point-max)) (insert (format "--%s--\n" boundary)) (goto-char (point-max)))) ;;; gpg wrapper (eval-and-compile (autoload 'gpg-decrypt "gpg") (autoload 'gpg-verify "gpg") (autoload 'gpg-verify-cleartext "gpg") (autoload 'gpg-sign-detached "gpg") (autoload 'gpg-sign-encrypt "gpg") (autoload 'gpg-encrypt "gpg") (autoload 'gpg-passphrase-read "gpg")) (defun mml2015-gpg-passphrase () (or (message-options-get 'gpg-passphrase) (message-options-set 'gpg-passphrase (gpg-passphrase-read)))) (defun mml2015-gpg-decrypt-1 () (let ((cipher (current-buffer)) plain result) (if (with-temp-buffer (prog1 (gpg-decrypt cipher (setq plain (current-buffer)) mml2015-result-buffer nil) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (with-current-buffer mml2015-result-buffer (buffer-string))) (set-buffer cipher) (erase-buffer) (insert-buffer plain) (goto-char (point-min)) (while (search-forward "\r\n" nil t) (replace-match "\n" t t)))) '(t) ;; Some wrong with the return value, check plain text buffer. (if (> (point-max) (point-min)) '(t) nil)))) (defun mml2015-gpg-decrypt (handle ctl) (let ((mml2015-decrypt-function 'mml2015-gpg-decrypt-1)) (mml2015-mailcrypt-decrypt handle ctl))) (defun mml2015-gpg-clear-decrypt () (let (result) (setq result (mml2015-gpg-decrypt-1)) (if (car result) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "OK") (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed")))) (defun mml2015-gpg-pretty-print-fpr (fingerprint) (let* ((result "") (fpr-length (string-width fingerprint)) (n-slice 0) slice) (setq fingerprint (string-to-list fingerprint)) (while fingerprint (setq fpr-length (- fpr-length 4)) (setq slice (butlast fingerprint fpr-length)) (setq fingerprint (nthcdr 4 fingerprint)) (setq n-slice (1+ n-slice)) (setq result (concat result (case n-slice (1 slice) (otherwise (concat " " slice)))))) result)) (defun mml2015-gpg-extract-signature-details () (goto-char (point-min)) (let* ((expired (re-search-forward "^\\[GNUPG:\\] SIGEXPIRED$" nil t)) (signer (and (re-search-forward "^\\[GNUPG:\\] GOODSIG \\([0-9A-Za-z]*\\) \\(.*\\)$" nil t) (cons (match-string 1) (match-string 2)))) (fprint (and (re-search-forward "^\\[GNUPG:\\] VALIDSIG \\([0-9a-zA-Z]*\\) " nil t) (match-string 1))) (trust (and (re-search-forward "^\\[GNUPG:\\] \\(TRUST_.*\\)$" nil t) (match-string 1))) (trust-good-enough-p (cdr (assoc trust mml2015-unabbrev-trust-alist)))) (cond ((and signer fprint) (concat (cdr signer) (unless trust-good-enough-p (concat "\nUntrusted, Fingerprint: " (mml2015-gpg-pretty-print-fpr fprint))) (when expired (format "\nWARNING: Signature from expired key (%s)" (car signer))))) ((re-search-forward "^\\(gpg: \\)?Good signature from \"\\(.*\\)\"$" nil t) (match-string 2)) (t "From unknown user")))) (defun mml2015-gpg-verify (handle ctl) (catch 'error (let (part message signature info-is-set-p) (unless (setq part (mm-find-raw-part-by-type ctl (or (mm-handle-multipart-ctl-parameter ctl 'protocol) "application/pgp-signature") t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Corrupted") (throw 'error handle)) (with-temp-buffer (setq message (current-buffer)) (insert part) ;; Convert to in verify mode. Sign and ;; clearsign use --textmode. The conversion is not necessary. ;; In clearverify, the conversion is not necessary either. (goto-char (point-min)) (end-of-line) (while (not (eobp)) (unless (eq (char-before) ?\r) (insert "\r")) (forward-line) (end-of-line)) (with-temp-buffer (setq signature (current-buffer)) (unless (setq part (mm-find-part-by-type (cdr handle) "application/pgp-signature" nil t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Corrupted") (throw 'error handle)) (mm-insert-part part) (unless (condition-case err (prog1 (gpg-verify message signature mml2015-result-buffer) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (with-current-buffer mml2015-result-buffer (buffer-string)))) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Error.") (setq info-is-set-p t) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Quit.") (setq info-is-set-p t) nil)) (unless info-is-set-p (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed")) (throw 'error handle))) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info (with-current-buffer mml2015-result-buffer (mml2015-gpg-extract-signature-details)))) handle))) (defun mml2015-gpg-clear-verify () (if (condition-case err (prog1 (gpg-verify-cleartext (current-buffer) mml2015-result-buffer) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (with-current-buffer mml2015-result-buffer (buffer-string)))) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") nil)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info (with-current-buffer mml2015-result-buffer (mml2015-gpg-extract-signature-details))) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed"))) (defun mml2015-gpg-sign (cont) (let ((boundary (funcall mml-boundary-function (incf mml-multipart-number))) (text (current-buffer)) signature) (goto-char (point-max)) (unless (bolp) (insert "\n")) (with-temp-buffer (unless (gpg-sign-detached text (setq signature (current-buffer)) mml2015-result-buffer nil (message-options-get 'message-sender) t t) ; armor & textmode (unless (> (point-max) (point-min)) (pop-to-buffer mml2015-result-buffer) (error "Sign error"))) (goto-char (point-min)) (while (re-search-forward "\r+$" nil t) (replace-match "" t t)) (set-buffer text) (goto-char (point-min)) (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n" boundary)) ;;; FIXME: what is the micalg? (insert "\tmicalg=pgp-sha1; protocol=\"application/pgp-signature\"\n") (insert (format "\n--%s\n" boundary)) (goto-char (point-max)) (insert (format "\n--%s\n" boundary)) (insert "Content-Type: application/pgp-signature\n\n") (insert-buffer signature) (goto-char (point-max)) (insert (format "--%s--\n" boundary)) (goto-char (point-max))))) (defun mml2015-gpg-encrypt (cont &optional sign) (let ((boundary (funcall mml-boundary-function (incf mml-multipart-number))) (text (current-buffer)) cipher) (mm-with-unibyte-current-buffer-mule4 (with-temp-buffer ;; set up a function to call the correct gpg encrypt routine ;; with the right arguments. (FIXME: this should be done ;; differently.) (flet ((gpg-encrypt-func (sign plaintext ciphertext result recipients &optional passphrase sign-with-key armor textmode) (if sign (gpg-sign-encrypt plaintext ciphertext result recipients passphrase sign-with-key armor textmode) (gpg-encrypt plaintext ciphertext result recipients passphrase armor textmode)))) (unless (gpg-encrypt-func sign ; passed in when using signencrypt text (setq cipher (current-buffer)) mml2015-result-buffer (split-string (or (message-options-get 'message-recipients) (message-options-set 'message-recipients (read-string "Recipients: "))) "[ \f\t\n\r\v,]+") nil (message-options-get 'message-sender) t t) ; armor & textmode (unless (> (point-max) (point-min)) (pop-to-buffer mml2015-result-buffer) (error "Encrypt error")))) (goto-char (point-min)) (while (re-search-forward "\r+$" nil t) (replace-match "" t t)) (set-buffer text) (delete-region (point-min) (point-max)) (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n" boundary)) (insert "\tprotocol=\"application/pgp-encrypted\"\n\n") (insert (format "--%s\n" boundary)) (insert "Content-Type: application/pgp-encrypted\n\n") (insert "Version: 1\n\n") (insert (format "--%s\n" boundary)) (insert "Content-Type: application/octet-stream\n\n") (insert-buffer cipher) (goto-char (point-max)) (insert (format "--%s--\n" boundary)) (goto-char (point-max)))))) ;;; pgg wrapper (eval-when-compile (defvar pgg-errors-buffer) (defvar pgg-output-buffer)) (eval-and-compile (autoload 'pgg-decrypt-region "pgg") (autoload 'pgg-verify-region "pgg") (autoload 'pgg-sign-region "pgg") (autoload 'pgg-encrypt-region "pgg")) (defun mml2015-pgg-decrypt (handle ctl) (catch 'error (let ((pgg-errors-buffer mml2015-result-buffer) child handles result decrypt-status) (unless (setq child (mm-find-part-by-type (cdr handle) "application/octet-stream" nil t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Corrupted") (throw 'error handle)) (with-temp-buffer (mm-insert-part child) (if (condition-case err (prog1 (pgg-decrypt-region (point-min) (point-max)) (setq decrypt-status (with-current-buffer mml2015-result-buffer (buffer-string))) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details decrypt-status)) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") nil)) (with-current-buffer pgg-output-buffer (goto-char (point-min)) (while (search-forward "\r\n" nil t) (replace-match "\n" t t)) (setq handles (mm-dissect-buffer t)) (mm-destroy-parts handle) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "OK") (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (concat decrypt-status (when (stringp (car handles)) "\n" (mm-handle-multipart-ctl-parameter handles 'gnus-details)))) (if (listp (car handles)) handles (list handles))) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed") (throw 'error handle)))))) (defun mml2015-pgg-clear-decrypt () (let ((pgg-errors-buffer mml2015-result-buffer)) (if (prog1 (pgg-decrypt-region (point-min) (point-max)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (with-current-buffer mml2015-result-buffer (buffer-string)))) (progn (erase-buffer) (insert-buffer pgg-output-buffer) (goto-char (point-min)) (while (search-forward "\r\n" nil t) (replace-match "\n" t t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "OK")) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed")))) (defun mml2015-pgg-verify (handle ctl) (let ((pgg-errors-buffer mml2015-result-buffer) signature-file part signature) (if (or (null (setq part (mm-find-raw-part-by-type ctl (or (mm-handle-multipart-ctl-parameter ctl 'protocol) "application/pgp-signature") t))) (null (setq signature (mm-find-part-by-type (cdr handle) "application/pgp-signature" nil t)))) (progn (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Corrupted") handle) (with-temp-buffer (insert part) ;; Convert to in verify mode. Sign and ;; clearsign use --textmode. The conversion is not necessary. ;; In clearverify, the conversion is not necessary either. (goto-char (point-min)) (end-of-line) (while (not (eobp)) (unless (eq (char-before) ?\r) (insert "\r")) (forward-line) (end-of-line)) (with-temp-file (setq signature-file (mm-make-temp-file "pgg")) (mm-insert-part signature)) (if (condition-case err (prog1 (pgg-verify-region (point-min) (point-max) signature-file t) (goto-char (point-min)) (while (search-forward "\r\n" nil t) (replace-match "\n" t t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (concat (with-current-buffer pgg-output-buffer (buffer-string)) (with-current-buffer pgg-errors-buffer (buffer-string))))) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") nil)) (progn (delete-file signature-file) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info (with-current-buffer pgg-errors-buffer (mml2015-gpg-extract-signature-details)))) (delete-file signature-file) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed"))))) handle) (defun mml2015-pgg-clear-verify () (let ((pgg-errors-buffer mml2015-result-buffer) (text (current-buffer))) (if (condition-case err (prog1 (mm-with-unibyte-buffer (insert-buffer text) (pgg-verify-region (point-min) (point-max) nil t)) (goto-char (point-min)) (while (search-forward "\r\n" nil t) (replace-match "\n" t t)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (concat (with-current-buffer pgg-output-buffer (buffer-string)) (with-current-buffer pgg-errors-buffer (buffer-string))))) (error (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details (mml2015-format-error err)) nil) (quit (mm-set-handle-multipart-parameter mm-security-handle 'gnus-details "Quit.") nil)) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info (with-current-buffer pgg-errors-buffer (mml2015-gpg-extract-signature-details))) (mm-set-handle-multipart-parameter mm-security-handle 'gnus-info "Failed")))) (defun mml2015-pgg-sign (cont) (let ((pgg-errors-buffer mml2015-result-buffer) (boundary (funcall mml-boundary-function (incf mml-multipart-number)))) (unless (pgg-sign-region (point-min) (point-max)) (pop-to-buffer mml2015-result-buffer) (error "Sign error")) (goto-char (point-min)) (insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n" boundary)) ;;; FIXME: what is the micalg? (insert "\tmicalg=pgp-sha1; protocol=\"application/pgp-signature\"\n") (insert (format "\n--%s\n" boundary)) (goto-char (point-max)) (insert (format "\n--%s\n" boundary)) (insert "Content-Type: application/pgp-signature\n\n") (insert-buffer pgg-output-buffer) (goto-char (point-max)) (insert (format "--%s--\n" boundary)) (goto-char (point-max)))) (defun mml2015-pgg-encrypt (cont &optional sign) (let ((pgg-errors-buffer mml2015-result-buffer) (boundary (funcall mml-boundary-function (incf mml-multipart-number)))) (unless (pgg-encrypt-region (point-min) (point-max) (split-string (or (message-options-get 'message-recipients) (message-options-set 'message-recipients (read-string "Recipients: "))) "[ \f\t\n\r\v,]+") sign) (pop-to-buffer mml2015-result-buffer) (error "Encrypt error")) (delete-region (point-min) (point-max)) (goto-char (point-min)) (insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n" boundary)) (insert "\tprotocol=\"application/pgp-encrypted\"\n\n") (insert (format "--%s\n" boundary)) (insert "Content-Type: application/pgp-encrypted\n\n") (insert "Version: 1\n\n") (insert (format "--%s\n" boundary)) (insert "Content-Type: application/octet-stream\n\n") (insert-buffer pgg-output-buffer) (goto-char (point-max)) (insert (format "--%s--\n" boundary)) (goto-char (point-max)))) ;;; General wrapper (defun mml2015-clean-buffer () (if (gnus-buffer-live-p mml2015-result-buffer) (with-current-buffer mml2015-result-buffer (erase-buffer) t) (setq mml2015-result-buffer (gnus-get-buffer-create "*MML2015 Result*")) nil)) (defsubst mml2015-clear-decrypt-function () (nth 6 (assq mml2015-use mml2015-function-alist))) (defsubst mml2015-clear-verify-function () (nth 5 (assq mml2015-use mml2015-function-alist))) ;;;###autoload (defun mml2015-decrypt (handle ctl) (mml2015-clean-buffer) (let ((func (nth 4 (assq mml2015-use mml2015-function-alist)))) (if func (funcall func handle ctl) handle))) ;;;###autoload (defun mml2015-decrypt-test (handle ctl) mml2015-use) ;;;###autoload (defun mml2015-verify (handle ctl) (mml2015-clean-buffer) (let ((func (nth 3 (assq mml2015-use mml2015-function-alist)))) (if func (funcall func handle ctl) handle))) ;;;###autoload (defun mml2015-verify-test (handle ctl) mml2015-use) ;;;###autoload (defun mml2015-encrypt (cont &optional sign) (mml2015-clean-buffer) (let ((func (nth 2 (assq mml2015-use mml2015-function-alist)))) (if func (funcall func cont sign) (error "Cannot find encrypt function")))) ;;;###autoload (defun mml2015-sign (cont) (mml2015-clean-buffer) (let ((func (nth 1 (assq mml2015-use mml2015-function-alist)))) (if func (funcall func cont) (error "Cannot find sign function")))) ;;;###autoload (defun mml2015-self-encrypt () (mml2015-encrypt nil)) (provide 'mml2015) ;;; mml2015.el ends here