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;;; mml1991.el --- Old PGP message format (RFC 1991) support for MML |
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;; Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc. |
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;; Author: Sascha Lüdecke <sascha@meta-x.de>, |
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;; Simon Josefsson <simon@josefsson.org> (Mailcrypt interface, Gnus glue) |
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;; Keywords PGP |
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;; This file is part of GNU Emacs. |
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;; GNU Emacs is free software; you can redistribute it and/or modify |
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;; it under the terms of the GNU General Public License as published by |
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;; the Free Software Foundation; either version 2, or (at your option) |
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;; any later version. |
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;; GNU Emacs is distributed in the hope that it will be useful, |
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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;; GNU General Public License for more details. |
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;; You should have received a copy of the GNU General Public License |
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;; along with GNU Emacs; see the file COPYING. If not, write to the |
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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;; Boston, MA 02111-1307, USA. |
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;;; Commentary: |
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;;; Code: |
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(eval-when-compile |
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(require 'cl) |
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(require 'mm-util)) |
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(autoload 'quoted-printable-decode-region "qp") |
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(autoload 'quoted-printable-encode-region "qp") |
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(defvar mml1991-use mml2015-use |
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"The package used for PGP.") |
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(defvar mml1991-function-alist |
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'((mailcrypt mml1991-mailcrypt-sign |
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mml1991-mailcrypt-encrypt) |
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(gpg mml1991-gpg-sign |
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mml1991-gpg-encrypt) |
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(pgg mml1991-pgg-sign |
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mml1991-pgg-encrypt)) |
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"Alist of PGP functions.") |
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;;; mailcrypt wrapper |
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(eval-and-compile |
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(autoload 'mc-sign-generic "mc-toplev")) |
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(defvar mml1991-decrypt-function 'mailcrypt-decrypt) |
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(defvar mml1991-verify-function 'mailcrypt-verify) |
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(defun mml1991-mailcrypt-sign (cont) |
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(let ((text (current-buffer)) |
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headers signature |
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(result-buffer (get-buffer-create "*GPG Result*"))) |
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;; Save MIME Content[^ ]+: headers from signing |
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(goto-char (point-min)) |
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(while (looking-at "^Content[^ ]+:") (forward-line)) |
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(unless (bobp) |
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(setq headers (buffer-string)) |
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(delete-region (point-min) (point))) |
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(goto-char (point-max)) |
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(unless (bolp) |
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(insert "\n")) |
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(quoted-printable-decode-region (point-min) (point-max)) |
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(with-temp-buffer |
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(setq signature (current-buffer)) |
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(insert-buffer-substring text) |
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(unless (mc-sign-generic (message-options-get 'message-sender) |
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nil nil nil nil) |
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(unless (> (point-max) (point-min)) |
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(pop-to-buffer result-buffer) |
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(error "Sign error"))) |
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(goto-char (point-min)) |
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(while (re-search-forward "\r+$" nil t) |
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(replace-match "" t t)) |
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(quoted-printable-encode-region (point-min) (point-max)) |
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(set-buffer text) |
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(delete-region (point-min) (point-max)) |
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(if headers (insert headers)) |
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(insert "\n") |
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(insert-buffer-substring signature) |
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(goto-char (point-max))))) |
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(defun mml1991-mailcrypt-encrypt (cont &optional sign) |
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(let ((text (current-buffer)) |
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(mc-pgp-always-sign |
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(or mc-pgp-always-sign |
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sign |
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(eq t (or (message-options-get 'message-sign-encrypt) |
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(message-options-set |
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'message-sign-encrypt |
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(or (y-or-n-p "Sign the message? ") |
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'not)))) |
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'never)) |
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cipher |
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(result-buffer (get-buffer-create "*GPG Result*"))) |
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;; Strip MIME Content[^ ]: headers since it will be ASCII ARMOURED |
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(goto-char (point-min)) |
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(while (looking-at "^Content[^ ]+:") (forward-line)) |
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(unless (bobp) |
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(delete-region (point-min) (point))) |
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(mm-with-unibyte-current-buffer |
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(with-temp-buffer |
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(setq cipher (current-buffer)) |
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(insert-buffer-substring text) |
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(unless (mc-encrypt-generic |
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(or |
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(message-options-get 'message-recipients) |
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(message-options-set 'message-recipients |
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(read-string "Recipients: "))) |
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nil |
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(point-min) (point-max) |
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(message-options-get 'message-sender) |
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'sign) |
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(unless (> (point-max) (point-min)) |
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(pop-to-buffer result-buffer) |
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(error "Encrypt error"))) |
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(goto-char (point-min)) |
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(while (re-search-forward "\r+$" nil t) |
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(replace-match "" t t)) |
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(set-buffer text) |
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(delete-region (point-min) (point-max)) |
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;;(insert "Content-Type: application/pgp-encrypted\n\n") |
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;;(insert "Version: 1\n\n") |
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(insert "\n") |
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(insert-buffer-substring cipher) |
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(goto-char (point-max)))))) |
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;;; gpg wrapper |
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(eval-and-compile |
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(autoload 'gpg-sign-cleartext "gpg")) |
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(defun mml1991-gpg-sign (cont) |
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(let ((text (current-buffer)) |
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headers signature |
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(result-buffer (get-buffer-create "*GPG Result*"))) |
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;; Save MIME Content[^ ]+: headers from signing |
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(goto-char (point-min)) |
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(while (looking-at "^Content[^ ]+:") (forward-line)) |
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(unless (bobp) |
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(setq headers (buffer-string)) |
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(delete-region (point-min) (point))) |
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(goto-char (point-max)) |
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(unless (bolp) |
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(insert "\n")) |
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(quoted-printable-decode-region (point-min) (point-max)) |
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(with-temp-buffer |
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(unless (gpg-sign-cleartext text (setq signature (current-buffer)) |
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result-buffer |
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nil |
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(message-options-get 'message-sender)) |
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(unless (> (point-max) (point-min)) |
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(pop-to-buffer result-buffer) |
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(error "Sign error"))) |
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(goto-char (point-min)) |
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(while (re-search-forward "\r+$" nil t) |
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(replace-match "" t t)) |
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(quoted-printable-encode-region (point-min) (point-max)) |
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(set-buffer text) |
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(delete-region (point-min) (point-max)) |
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(if headers (insert headers)) |
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(insert "\n") |
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(insert-buffer-substring signature) |
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(goto-char (point-max))))) |
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(defun mml1991-gpg-encrypt (cont &optional sign) |
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(let ((text (current-buffer)) |
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cipher |
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(result-buffer (get-buffer-create "*GPG Result*"))) |
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;; Strip MIME Content[^ ]: headers since it will be ASCII ARMOURED |
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(goto-char (point-min)) |
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(while (looking-at "^Content[^ ]+:") (forward-line)) |
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(unless (bobp) |
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(delete-region (point-min) (point))) |
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(mm-with-unibyte-current-buffer |
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(with-temp-buffer |
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(flet ((gpg-encrypt-func |
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(sign plaintext ciphertext result recipients &optional |
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passphrase sign-with-key armor textmode) |
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(if sign |
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(gpg-sign-encrypt |
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plaintext ciphertext result recipients passphrase |
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sign-with-key armor textmode) |
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(gpg-encrypt |
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plaintext ciphertext result recipients passphrase |
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armor textmode)))) |
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(unless (gpg-encrypt-func |
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sign |
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text (setq cipher (current-buffer)) |
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result-buffer |
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(split-string |
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(or |
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(message-options-get 'message-recipients) |
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(message-options-set 'message-recipients |
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(read-string "Recipients: "))) |
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"[ \f\t\n\r\v,]+") |
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nil |
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(message-options-get 'message-sender) |
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t t) ; armor & textmode |
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(unless (> (point-max) (point-min)) |
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(pop-to-buffer result-buffer) |
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(error "Encrypt error")))) |
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(goto-char (point-min)) |
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(while (re-search-forward "\r+$" nil t) |
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(replace-match "" t t)) |
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(set-buffer text) |
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(delete-region (point-min) (point-max)) |
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;;(insert "Content-Type: application/pgp-encrypted\n\n") |
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;;(insert "Version: 1\n\n") |
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(insert "\n") |
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(insert-buffer-substring cipher) |
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(goto-char (point-max)))))) |
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;; pgg wrapper |
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(defvar pgg-output-buffer) |
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(defvar pgg-errors-buffer) |
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(defun mml1991-pgg-sign (cont) |
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(let (headers cte) |
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;; Don't sign headers. |
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(goto-char (point-min)) |
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(while (not (looking-at "^$")) |
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(forward-line)) |
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(unless (eobp) ;; no headers? |
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(setq headers (buffer-substring (point-min) (point))) |
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(forward-line) ;; skip header/body separator |
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(delete-region (point-min) (point))) |
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(when (string-match "^Content-Transfer-Encoding: \\(.+\\)" headers) |
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(setq cte (intern (match-string 1 headers)))) |
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(mm-decode-content-transfer-encoding cte) |
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(unless (let ((pgg-default-user-id |
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(or (message-options-get 'mml-sender) |
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pgg-default-user-id))) |
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(pgg-sign-region (point-min) (point-max) t)) |
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(pop-to-buffer pgg-errors-buffer) |
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(error "Encrypt error")) |
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(delete-region (point-min) (point-max)) |
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(mm-with-unibyte-current-buffer |
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(insert-buffer-substring pgg-output-buffer) |
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(goto-char (point-min)) |
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(while (re-search-forward "\r+$" nil t) |
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(replace-match "" t t)) |
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(mm-encode-content-transfer-encoding cte) |
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(goto-char (point-min)) |
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(when headers |
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(insert headers)) |
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(insert "\n")) |
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t)) |
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(defun mml1991-pgg-encrypt (cont &optional sign) |
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(let (cte) |
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;; Strip MIME Content[^ ]: headers since it will be ASCII ARMOURED |
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(goto-char (point-min)) |
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(while (looking-at "^Content[^ ]+:") |
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(when (looking-at "^Content-Transfer-Encoding: \\(.+\\)") |
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(setq cte (intern (match-string 1)))) |
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(forward-line)) |
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(unless (bobp) |
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(delete-region (point-min) (point))) |
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(mm-decode-content-transfer-encoding cte) |
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(unless (pgg-encrypt-region |
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(point-min) (point-max) |
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(split-string |
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(or |
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(message-options-get 'message-recipients) |
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(message-options-set 'message-recipients |
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(read-string "Recipients: "))) |
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"[ \f\t\n\r\v,]+") |
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sign) |
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(pop-to-buffer pgg-errors-buffer) |
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(error "Encrypt error")) |
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(delete-region (point-min) (point-max)) |
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;;(insert "Content-Type: application/pgp-encrypted\n\n") |
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;;(insert "Version: 1\n\n") |
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(insert "\n") |
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(insert-buffer-substring pgg-output-buffer) |
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t)) |
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;;;###autoload |
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(defun mml1991-encrypt (cont &optional sign) |
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(let ((func (nth 2 (assq mml1991-use mml1991-function-alist)))) |
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(if func |
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(funcall func cont sign) |
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(error "Cannot find encrypt function")))) |
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;;;###autoload |
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(defun mml1991-sign (cont) |
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(let ((func (nth 1 (assq mml1991-use mml1991-function-alist)))) |
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(if func |
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(funcall func cont) |
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(error "Cannot find sign function")))) |
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(provide 'mml1991) |
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;; Local Variables: |
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;; coding: iso-8859-1 |
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;; End: |
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;;; arch-tag: e542be18-ab28-4393-9b33-97fe9cf30706 |
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;;; mml1991.el ends here |