;;; tm-pgp.el --- tm-view internal methods for PGP.
;;;
;;; Copyright (C) 1995 Free Software Foundation, Inc.
-;;; Copyright (C) 1995 MORIOKA Tomohiko
+;;; Copyright (C) 1995,1996 MORIOKA Tomohiko
;;;
;;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
;;; Maintainer: MORIOKA Tomohiko <morioka@jaist.ac.jp>
;;; Created: 1995/12/7
;;; Version:
-;;; $Id: tm-pgp.el,v 5.0 1995/12/14 15:41:18 morioka Exp $
+;;; $Id: tm-pgp.el,v 7.19 1996/07/18 12:20:32 morioka Exp $
;;; Keywords: mail, news, MIME, multimedia, PGP, security
;;;
;;; This file is part of tm (Tools for MIME).
;;;
;;; Commentary:
;;; This module is based on 2 drafts about PGP MIME integration:
-;;; - draft-elkins-pem-pgp-01.txt
+;;; - draft-elkins-pem-pgp-02.txt
;;; ``MIME Security with Pretty Good Privacy (PGP)''
-;;; by Michael Elkins <elkins@aero.org> (1995/9)
+;;; by Michael Elkins <elkins@aero.org> (1995/11)
;;; - draft-kazu-pgp-mime-00.txt
;;; ``PGP MIME Integration''
;;; by Kazuhiko Yamamoto <kazu@is.aist-nara.ac.jp> (1995/10)
(cur-buf (current-buffer))
(new-name (format "%s-%s" (buffer-name) cnum))
(mother mime::article/preview-buffer)
- (code-converter
- (or (cdr (assq major-mode mime-viewer/code-converter-alist))
- 'mime-viewer/default-code-convert-region))
- str)
+ (mode major-mode)
+ code-converter str)
(setq str (buffer-substring beg end))
(switch-to-buffer new-name)
(erase-buffer)
(while (re-search-forward "^- -" nil t)
(replace-match "-")
)
+ (setq code-converter
+ (or
+ (cdr (assq mode mime-viewer/code-converter-alist))
+ (function mime-viewer/default-code-convert-region)))
)
((progn
(goto-char (point-min))
(re-search-forward "^-+BEGIN PGP MESSAGE-+$" nil t)
)
- (mc-decrypt)
+ (as-binary-process (mc-decrypt))
(goto-char (point-min))
(delete-region (point-min)
(and
(search-forward "\n\n")
(match-end 0)))
+ (setq code-converter (function mime-charset/decode-buffer))
))
(setq major-mode 'mime/show-message-mode)
(setq mime::article/code-converter code-converter)
(method . mime-article/view-application/pgp)
))
+(set-atype 'mime/content-decoding-condition
+ '((type . "text/x-pgp")
+ (method . mime-article/view-application/pgp)
+ ))
+
;;; @ Internal method for application/pgp-signature
;;;
-;;; It is based on draft-elkins-pem-pgp-01.txt
+;;; It is based on draft-elkins-pem-pgp-02.txt
+
+(defvar tm-pgp::good-signature-regexp "Good signature from user.*$")
+
+(defvar tm-pgp::key-expected-regexp
+ "Key matching expected Key ID \\(\\S +\\) not found")
+
+(defun mime::article/call-pgp-to-check-signature (output-buffer orig-file)
+ (save-excursion
+ (set-buffer output-buffer)
+ (erase-buffer)
+ )
+ (let ((status
+ (call-process-region (point-min)(point-max)
+ "pgp" nil output-buffer nil orig-file)))
+ (if (= status 0)
+ (save-excursion
+ (set-buffer output-buffer)
+ (goto-char (point-min))
+ (message
+ (if (re-search-forward tm-pgp::good-signature-regexp nil t)
+ (buffer-substring (match-beginning 0) (match-end 0))
+ "Bad signature"
+ ))
+ ))))
(defun mime-article/check-pgp-signature (beg end cal)
- (let* ((cnum (mime-article/point-content-number beg))
+ (let* ((encoding (cdr (assq 'encoding cal)))
+ (cnum (mime-article/point-content-number beg))
(rcnum (reverse cnum))
(rmcnum (cdr rcnum))
(knum (car rcnum))
- (onum (if (>= knum 0)
+ (onum (if (> knum 0)
(1- knum)
(1+ knum)))
(oinfo (mime-article/rcnum-to-cinfo (cons onum rmcnum)
(while (re-search-forward "\n" nil t)
(replace-match "\r\n")
)
- (write-file orig-file)
+ (let ((mc-flag nil) ; for Mule
+ (file-coding-system *noconv*)
+ kanji-flag ; for NEmacs
+ (emx-binary-mode t) ; for OS/2
+ jka-compr-compression-info-list ; for jka-compr
+ jam-zcat-filename-list ; for jam-zcat
+ require-final-newline)
+ (write-file orig-file)
+ )
(kill-buffer (current-buffer))
)
(save-excursion
+ (mime-article/show-output-buffer)
+ )
+ (save-excursion
(setq str (buffer-substring
(save-excursion
(goto-char beg)
end))
(set-buffer (setq kbuf (get-buffer-create mime/temp-buffer-name)))
(insert str)
- (base64-decode-region (point-min)(point-max))
- (let ((file-coding-system *noconv*)
- jka-compr-compression-info-list
- jam-zcat-filename-list)
+ (mime-decode-region (point-min)(point-max) encoding)
+ (let ((mc-flag nil) ; for Mule
+ (file-coding-system *noconv*)
+ kanji-flag ; for NEmacs
+ (emx-binary-mode t) ; for OS/2
+ jka-compr-compression-info-list ; for jka-compr
+ jam-zcat-filename-list ; for jam-zcat
+ require-final-newline)
(write-file sig-file)
)
- ;;(define-program-coding-system (current-buffer) "pgp" *noconv*)
- (mime-article/show-output-buffer)
- (setq status
- (call-process-region (point-min)(point-max)
- "pgp"
- nil mime/output-buffer-name nil
- orig-file))
- (kill-buffer kbuf)
+ ;;(get-buffer-create mime/output-buffer-name)
+ (or (mime::article/call-pgp-to-check-signature
+ mime/output-buffer-name orig-file)
+ (let (pgp-id)
+ (save-excursion
+ (set-buffer mime/output-buffer-name)
+ (goto-char (point-min))
+ (if (re-search-forward tm-pgp::key-expected-regexp nil t)
+ (setq pgp-id
+ (concat "0x" (buffer-substring-no-properties
+ (match-beginning 1)
+ (match-end 1))))
+ ))
+ (y-or-n-p
+ (format "Key %s not found; attempt to fetch? " pgp-id))
+ (mc-pgp-fetch-key (cons nil pgp-id))
+ (mime::article/call-pgp-to-check-signature
+ mime/output-buffer-name orig-file)
+ ))
(let ((other-window-scroll-buffer mime/output-buffer-name))
(scroll-other-window 8)
)
- ;; (if (= status 0)
- ;; (message "Good signature!")
- ;; (message "Bad signature!")
- ;; )
+ (kill-buffer kbuf)
(delete-file orig-file)
(delete-file sig-file)
)))
))
+;;; @ Internal method for application/pgp-encrypted
+;;;
+;;; It is based on draft-elkins-pem-pgp-02.txt
+
+(defun mime-article/decrypt-pgp (beg end cal)
+ (let* ((cnum (mime-article/point-content-number beg))
+ (rcnum (reverse cnum))
+ (rmcnum (cdr rcnum))
+ (knum (car rcnum))
+ (onum (if (> knum 0)
+ (1- knum)
+ (1+ knum)))
+ (oinfo (mime-article/rcnum-to-cinfo (cons onum rmcnum)
+ mime::article/content-info))
+ (obeg (mime::content-info/point-min oinfo))
+ (oend (mime::content-info/point-max oinfo))
+ )
+ (mime-article/view-application/pgp obeg oend cal)
+ ))
+
+(set-atype 'mime/content-decoding-condition
+ '((type . "application/pgp-encrypted")
+ (method . mime-article/decrypt-pgp)
+ ))
+
+
;;; @ Internal method for application/pgp-keys
;;;
-;;; It is based on draft-elkins-pem-pgp-01.txt
+;;; It is based on draft-elkins-pem-pgp-02.txt
+
+(autoload 'mc-snarf-keys "mc-toplev")
(defun mime-article/add-pgp-keys (beg end cal)
(let* ((cnum (mime-article/point-content-number beg))
(if (re-search-forward "^\n" nil t)
(delete-region (point-min) (match-end 0))
)
- (mime/decode-region encoding (point-min)(point-max))
+ (mime-decode-region (point-min)(point-max) encoding)
(mc-snarf-keys)
(kill-buffer (current-buffer))
))
;;;
(provide 'tm-pgp)
+
+;;; tm-pgp.el ends here