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921 lines
30 KiB
EmacsLisp
921 lines
30 KiB
EmacsLisp
;;; mml2015.el --- MIME Security with Pretty Good Privacy (PGP)
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;; Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
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;; Keywords: PGP MIME MML
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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
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;; by the Free Software Foundation; either version 2, or (at your
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;; option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; 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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;; RFC 2015 is updated by RFC 3156, this file should be compatible
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;; with both.
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;;; Code:
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(eval-when-compile (require 'cl))
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(require 'mm-decode)
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(require 'mm-util)
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(require 'mml)
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(defvar mml2015-use (or
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(progn
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(ignore-errors
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(require 'pgg))
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(and (fboundp 'pgg-sign-region)
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'pgg))
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(progn
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(ignore-errors
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(require 'gpg))
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(and (fboundp 'gpg-sign-detached)
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'gpg))
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(progn (ignore-errors
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(load "mc-toplev"))
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(and (fboundp 'mc-encrypt-generic)
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(fboundp 'mc-sign-generic)
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(fboundp 'mc-cleanup-recipient-headers)
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'mailcrypt)))
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"The package used for PGP/MIME.")
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;; Something is not RFC2015.
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(defvar mml2015-function-alist
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'((mailcrypt mml2015-mailcrypt-sign
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mml2015-mailcrypt-encrypt
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mml2015-mailcrypt-verify
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mml2015-mailcrypt-decrypt
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mml2015-mailcrypt-clear-verify
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mml2015-mailcrypt-clear-decrypt)
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(gpg mml2015-gpg-sign
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mml2015-gpg-encrypt
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mml2015-gpg-verify
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mml2015-gpg-decrypt
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mml2015-gpg-clear-verify
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mml2015-gpg-clear-decrypt)
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(pgg mml2015-pgg-sign
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mml2015-pgg-encrypt
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mml2015-pgg-verify
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mml2015-pgg-decrypt
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mml2015-pgg-clear-verify
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mml2015-pgg-clear-decrypt))
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"Alist of PGP/MIME functions.")
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(defvar mml2015-result-buffer nil)
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(defcustom mml2015-unabbrev-trust-alist
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'(("TRUST_UNDEFINED" . nil)
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("TRUST_NEVER" . nil)
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("TRUST_MARGINAL" . t)
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("TRUST_FULLY" . t)
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("TRUST_ULTIMATE" . t))
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"Map GnuPG trust output values to a boolean saying if you trust the key."
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:version "22.1"
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:group 'mime-security
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:type '(repeat (cons (regexp :tag "GnuPG output regexp")
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(boolean :tag "Trust key"))))
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;;; mailcrypt wrapper
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(eval-and-compile
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(autoload 'mailcrypt-decrypt "mailcrypt")
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(autoload 'mailcrypt-verify "mailcrypt")
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(autoload 'mc-pgp-always-sign "mailcrypt")
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(autoload 'mc-encrypt-generic "mc-toplev")
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(autoload 'mc-cleanup-recipient-headers "mc-toplev")
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(autoload 'mc-sign-generic "mc-toplev"))
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(eval-when-compile
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(defvar mc-default-scheme)
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(defvar mc-schemes))
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(defvar mml2015-decrypt-function 'mailcrypt-decrypt)
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(defvar mml2015-verify-function 'mailcrypt-verify)
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(defun mml2015-format-error (err)
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(if (stringp (cadr err))
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(cadr err)
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(format "%S" (cdr err))))
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(defun mml2015-mailcrypt-decrypt (handle ctl)
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(catch 'error
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(let (child handles result)
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(unless (setq child (mm-find-part-by-type
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(cdr handle)
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"application/octet-stream" nil t))
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "Corrupted")
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(throw 'error handle))
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(with-temp-buffer
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(mm-insert-part child)
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(setq result
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(condition-case err
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(funcall mml2015-decrypt-function)
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(error
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details (mml2015-format-error err))
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nil)
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(quit
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details "Quit.")
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nil)))
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(unless (car result)
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "Failed")
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(throw 'error handle))
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(setq handles (mm-dissect-buffer t)))
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(mm-destroy-parts handle)
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info
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(concat "OK"
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(let ((sig (with-current-buffer mml2015-result-buffer
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(mml2015-gpg-extract-signature-details))))
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(concat ", Signer: " sig))))
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(if (listp (car handles))
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handles
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(list handles)))))
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(defun mml2015-mailcrypt-clear-decrypt ()
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(let (result)
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(setq result
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(condition-case err
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(funcall mml2015-decrypt-function)
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(error
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details (mml2015-format-error err))
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nil)
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(quit
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details "Quit.")
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nil)))
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(if (car result)
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "OK")
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "Failed"))))
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(defun mml2015-fix-micalg (alg)
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(and alg
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;; Mutt/1.2.5i has seen sending micalg=php-sha1
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(upcase (if (string-match "^p[gh]p-" alg)
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(substring alg (match-end 0))
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alg))))
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(defun mml2015-mailcrypt-verify (handle ctl)
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(catch 'error
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(let (part)
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(unless (setq part (mm-find-raw-part-by-type
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ctl (or (mm-handle-multipart-ctl-parameter
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ctl 'protocol)
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"application/pgp-signature")
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t))
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "Corrupted")
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(throw 'error handle))
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(with-temp-buffer
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(insert "-----BEGIN PGP SIGNED MESSAGE-----\n")
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(insert (format "Hash: %s\n\n"
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(or (mml2015-fix-micalg
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(mm-handle-multipart-ctl-parameter
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ctl 'micalg))
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"SHA1")))
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(save-restriction
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(narrow-to-region (point) (point))
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(insert part "\n")
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(goto-char (point-min))
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(while (not (eobp))
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(if (looking-at "^-")
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(insert "- "))
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(forward-line)))
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(unless (setq part (mm-find-part-by-type
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(cdr handle) "application/pgp-signature" nil t))
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "Corrupted")
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(throw 'error handle))
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(save-restriction
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(narrow-to-region (point) (point))
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(mm-insert-part part)
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(goto-char (point-min))
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(if (re-search-forward "^-----BEGIN PGP [^-]+-----\r?$" nil t)
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(replace-match "-----BEGIN PGP SIGNATURE-----" t t))
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(if (re-search-forward "^-----END PGP [^-]+-----\r?$" nil t)
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(replace-match "-----END PGP SIGNATURE-----" t t)))
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(let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*")))
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(unless (condition-case err
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(prog1
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(funcall mml2015-verify-function)
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(if (get-buffer " *mailcrypt stderr temp")
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details
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(with-current-buffer " *mailcrypt stderr temp"
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(buffer-string))))
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(if (get-buffer " *mailcrypt stdout temp")
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(kill-buffer " *mailcrypt stdout temp"))
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(if (get-buffer " *mailcrypt stderr temp")
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(kill-buffer " *mailcrypt stderr temp"))
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(if (get-buffer " *mailcrypt status temp")
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(kill-buffer " *mailcrypt status temp"))
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(if (get-buffer mc-gpg-debug-buffer)
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(kill-buffer mc-gpg-debug-buffer)))
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(error
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details (mml2015-format-error err))
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nil)
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(quit
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details "Quit.")
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nil))
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "Failed")
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(throw 'error handle))))
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "OK")
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handle)))
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(defun mml2015-mailcrypt-clear-verify ()
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(let ((mc-gpg-debug-buffer (get-buffer-create " *gnus gpg debug*")))
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(if (condition-case err
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(prog1
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(funcall mml2015-verify-function)
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(if (get-buffer " *mailcrypt stderr temp")
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details
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(with-current-buffer " *mailcrypt stderr temp"
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(buffer-string))))
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(if (get-buffer " *mailcrypt stdout temp")
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(kill-buffer " *mailcrypt stdout temp"))
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(if (get-buffer " *mailcrypt stderr temp")
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(kill-buffer " *mailcrypt stderr temp"))
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(if (get-buffer " *mailcrypt status temp")
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(kill-buffer " *mailcrypt status temp"))
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(if (get-buffer mc-gpg-debug-buffer)
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(kill-buffer mc-gpg-debug-buffer)))
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(error
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details (mml2015-format-error err))
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nil)
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(quit
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details "Quit.")
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nil))
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "OK")
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "Failed"))))
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(defun mml2015-mailcrypt-sign (cont)
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(mc-sign-generic (message-options-get 'message-sender)
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nil nil nil nil)
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(let ((boundary (mml-compute-boundary cont))
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hash point)
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(goto-char (point-min))
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(unless (re-search-forward "^-----BEGIN PGP SIGNED MESSAGE-----\r?$" nil t)
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(error "Cannot find signed begin line"))
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(goto-char (match-beginning 0))
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(forward-line 1)
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(unless (looking-at "Hash:[ \t]*\\([a-zA-Z0-9]+\\)")
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(error "Cannot not find PGP hash"))
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(setq hash (match-string 1))
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(unless (re-search-forward "^$" nil t)
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(error "Cannot not find PGP message"))
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(forward-line 1)
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(delete-region (point-min) (point))
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(insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
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boundary))
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(insert (format "\tmicalg=pgp-%s; protocol=\"application/pgp-signature\"\n"
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(downcase hash)))
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(insert (format "\n--%s\n" boundary))
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(setq point (point))
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(goto-char (point-max))
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(unless (re-search-backward "^-----END PGP SIGNATURE-----\r?$" nil t)
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(error "Cannot find signature part"))
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(replace-match "-----END PGP MESSAGE-----" t t)
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(goto-char (match-beginning 0))
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(unless (re-search-backward "^-----BEGIN PGP SIGNATURE-----\r?$"
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nil t)
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(error "Cannot find signature part"))
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(replace-match "-----BEGIN PGP MESSAGE-----" t t)
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(goto-char (match-beginning 0))
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(save-restriction
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(narrow-to-region point (point))
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(goto-char point)
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(while (re-search-forward "^- -" nil t)
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(replace-match "-" t t))
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(goto-char (point-max)))
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(insert (format "--%s\n" boundary))
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(insert "Content-Type: application/pgp-signature\n\n")
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(goto-char (point-max))
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(insert (format "--%s--\n" boundary))
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(goto-char (point-max))))
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(defun mml2015-mailcrypt-encrypt (cont &optional sign)
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(let ((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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(mm-with-unibyte-current-buffer
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(mc-encrypt-generic
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(or (message-options-get 'message-recipients)
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(message-options-set 'message-recipients
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(mc-cleanup-recipient-headers
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(read-string "Recipients: "))))
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nil nil nil
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(message-options-get 'message-sender))))
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(goto-char (point-min))
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(unless (looking-at "-----BEGIN PGP MESSAGE-----")
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(error "Fail to encrypt the message"))
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(let ((boundary (mml-compute-boundary cont)))
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(insert (format "Content-Type: multipart/encrypted; boundary=\"%s\";\n"
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boundary))
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(insert "\tprotocol=\"application/pgp-encrypted\"\n\n")
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(insert (format "--%s\n" boundary))
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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 (format "--%s\n" boundary))
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(insert "Content-Type: application/octet-stream\n\n")
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(goto-char (point-max))
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(insert (format "--%s--\n" boundary))
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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-decrypt "gpg")
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(autoload 'gpg-verify "gpg")
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(autoload 'gpg-verify-cleartext "gpg")
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(autoload 'gpg-sign-detached "gpg")
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(autoload 'gpg-sign-encrypt "gpg")
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(autoload 'gpg-encrypt "gpg")
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(autoload 'gpg-passphrase-read "gpg"))
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(defun mml2015-gpg-passphrase ()
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(or (message-options-get 'gpg-passphrase)
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(message-options-set 'gpg-passphrase (gpg-passphrase-read))))
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(defun mml2015-gpg-decrypt-1 ()
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(let ((cipher (current-buffer)) plain result)
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(if (with-temp-buffer
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(prog1
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(gpg-decrypt cipher (setq plain (current-buffer))
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mml2015-result-buffer nil)
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-details
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(with-current-buffer mml2015-result-buffer
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(buffer-string)))
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(set-buffer cipher)
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(erase-buffer)
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(insert-buffer-substring plain)
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(goto-char (point-min))
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(while (search-forward "\r\n" nil t)
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(replace-match "\n" t t))))
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'(t)
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;; Some wrong with the return value, check plain text buffer.
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(if (> (point-max) (point-min))
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'(t)
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nil))))
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(defun mml2015-gpg-decrypt (handle ctl)
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(let ((mml2015-decrypt-function 'mml2015-gpg-decrypt-1))
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(mml2015-mailcrypt-decrypt handle ctl)))
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(defun mml2015-gpg-clear-decrypt ()
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(let (result)
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(setq result (mml2015-gpg-decrypt-1))
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(if (car result)
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "OK")
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(mm-set-handle-multipart-parameter
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mm-security-handle 'gnus-info "Failed"))))
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(defun mml2015-gpg-pretty-print-fpr (fingerprint)
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(let* ((result "")
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(fpr-length (string-width fingerprint))
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(n-slice 0)
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slice)
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(setq fingerprint (string-to-list fingerprint))
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(while fingerprint
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(setq fpr-length (- fpr-length 4))
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(setq slice (butlast fingerprint fpr-length))
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(setq fingerprint (nthcdr 4 fingerprint))
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(setq n-slice (1+ n-slice))
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(setq result
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(concat
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result
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(case n-slice
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(1 slice)
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(otherwise (concat " " slice))))))
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result))
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(defun mml2015-gpg-extract-signature-details ()
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(goto-char (point-min))
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(let* ((expired (re-search-forward
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"^\\[GNUPG:\\] SIGEXPIRED$"
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nil t))
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(signer (and (re-search-forward
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"^\\[GNUPG:\\] GOODSIG \\([0-9A-Za-z]*\\) \\(.*\\)$"
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nil t)
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(cons (match-string 1) (match-string 2))))
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(fprint (and (re-search-forward
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"^\\[GNUPG:\\] VALIDSIG \\([0-9a-zA-Z]*\\) "
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nil t)
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(match-string 1)))
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(trust (and (re-search-forward
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"^\\[GNUPG:\\] \\(TRUST_.*\\)$"
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nil t)
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(match-string 1)))
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(trust-good-enough-p
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(cdr (assoc trust mml2015-unabbrev-trust-alist))))
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(cond ((and signer fprint)
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(concat (cdr signer)
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(unless trust-good-enough-p
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(concat "\nUntrusted, Fingerprint: "
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(mml2015-gpg-pretty-print-fpr fprint)))
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(when expired
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(format "\nWARNING: Signature from expired key (%s)"
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(car signer)))))
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((re-search-forward
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"^\\(gpg: \\)?Good signature from \"\\(.*\\)\"$" nil t)
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(match-string 2))
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(t
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"From unknown user"))))
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(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 <LF> to <CR><LF> 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 (mml-compute-boundary cont))
|
|
(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+$" nil t)
|
|
(replace-match "" t t))
|
|
(set-buffer text)
|
|
(goto-char (point-min))
|
|
(insert (format "Content-Type: multipart/signed; boundary=\"%s\";\n"
|
|
boundary))
|
|
;;; FIXME: what is the micalg?
|
|
(insert "\tmicalg=pgp-sha1; protocol=\"application/pgp-signature\"\n")
|
|
(insert (format "\n--%s\n" boundary))
|
|
(goto-char (point-max))
|
|
(insert (format "\n--%s\n" boundary))
|
|
(insert "Content-Type: application/pgp-signature\n\n")
|
|
(insert-buffer-substring signature)
|
|
(goto-char (point-max))
|
|
(insert (format "--%s--\n" boundary))
|
|
(goto-char (point-max)))))
|
|
|
|
(defun mml2015-gpg-encrypt (cont &optional sign)
|
|
(let ((boundary (mml-compute-boundary cont))
|
|
(text (current-buffer))
|
|
cipher)
|
|
(mm-with-unibyte-current-buffer
|
|
(with-temp-buffer
|
|
;; set up a function to call the correct gpg encrypt routine
|
|
;; with the right arguments. (FIXME: this should be done
|
|
;; differently.)
|
|
(flet ((gpg-encrypt-func
|
|
(sign plaintext ciphertext result recipients &optional
|
|
passphrase sign-with-key armor textmode)
|
|
(if sign
|
|
(gpg-sign-encrypt
|
|
plaintext ciphertext result recipients passphrase
|
|
sign-with-key armor textmode)
|
|
(gpg-encrypt
|
|
plaintext ciphertext result recipients passphrase
|
|
armor textmode))))
|
|
(unless (gpg-encrypt-func
|
|
sign ; passed in when using signencrypt
|
|
text (setq cipher (current-buffer))
|
|
mml2015-result-buffer
|
|
(split-string
|
|
(or
|
|
(message-options-get 'message-recipients)
|
|
(message-options-set 'message-recipients
|
|
(read-string "Recipients: ")))
|
|
"[ \f\t\n\r\v,]+")
|
|
nil
|
|
(message-options-get 'message-sender)
|
|
t t) ; armor & textmode
|
|
(unless (> (point-max) (point-min))
|
|
(pop-to-buffer mml2015-result-buffer)
|
|
(error "Encrypt error"))))
|
|
(goto-char (point-min))
|
|
(while (re-search-forward "\r+$" 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-substring 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-substring 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 <LF> to <CR><LF> 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 (buffer-string))
|
|
(coding-system buffer-file-coding-system))
|
|
(if (condition-case err
|
|
(prog1
|
|
(mm-with-unibyte-buffer
|
|
(insert (encode-coding-string text coding-system))
|
|
(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 (mml-compute-boundary cont))
|
|
(pgg-default-user-id (or (message-options-get 'mml-sender)
|
|
pgg-default-user-id)))
|
|
(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-substring 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 (mml-compute-boundary cont)))
|
|
(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-substring 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)
|
|
|
|
;;; arch-tag: b04701d5-0b09-44d8-bed8-de901bf435f2
|
|
;;; mml2015.el ends here
|