* mime-pgp.el: Require 'epg.
[elisp/semi.git] / mime-edit.el
index e646804..f21e16a 100644 (file)
@@ -23,8 +23,8 @@
 
 ;; 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.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
 
 ;;; Commentary:
 
 (require 'mime-view)
 (require 'signature)
 (require 'alist)
-(require 'pgg-def)
-(require 'pgg-parse)
-
-(autoload 'pgg-encrypt-region "pgg"
-  "PGP encryption of current region." t)
-(autoload 'pgg-sign-region "pgg"
-  "PGP signature of current region." t)
-(autoload 'pgg-insert-key "pgg"
-  "Insert PGP public key at point." t)
+(require 'epa)
+
 (autoload 'smime-encrypt-buffer "smime"
   "S/MIME encryption of current buffer.")
 (autoload 'smime-sign-buffer "smime"
@@ -230,6 +223,9 @@ To insert a signature file automatically, call the function
     ("application"
      ("octet-stream" ("type" "" "tar" "shar"))
      ("postscript")
+     ("pdf")
+     ("msword")
+     ("vnd.ms-excel")
      ("vnd.ms-powerpoint")
      ("x-kiss" ("x-cnf")))
     ("image"
@@ -305,6 +301,10 @@ To insert a signature file automatically, call the function
      "application" "msword" nil
      "base64"
      "attachment" (("filename" . file)))
+    ("\\.xls$"                         ; MS Excel
+     "application" "vnd.ms-excel" nil
+     "base64"
+     "attachment" (("filename" . file)))
     ("\\.ppt$"                         ; MS Power Point
      "application" "vnd.ms-powerpoint" nil
      "base64"
@@ -316,7 +316,11 @@ To insert a signature file automatically, call the function
      "inline"          (("filename" . file)))
     ("\\.ps$"
      "application" "postscript"        nil
-     "quoted-printable"
+     "base64"
+     "attachment"      (("filename" . file)))
+    ("\\.pdf$"
+     "application" "pdf"       nil
+     "base64"
      "attachment"      (("filename" . file)))
 
     ;;  Pure binary
@@ -456,6 +460,7 @@ If encoding is nil, it is determined from its contents."
     (iso-8859-7                8 "quoted-printable")
     (iso-8859-8                8 "quoted-printable")
     (iso-8859-9                8 "quoted-printable")
+    (iso-8859-14       8 "quoted-printable")
     (iso-8859-15       8 "quoted-printable")
     (iso-2022-jp       7 "base64")
     (iso-2022-jp-3     7 "base64")
@@ -607,8 +612,12 @@ If it is not specified for a major-mode,
          ") "
          (if (fboundp 'apel-version)
              (concat (apel-version) " "))
+         "EasyPG/ " epg-version-number " "
          (if (featurep 'xemacs)
-             (concat (cond ((featurep 'utf-2000)
+             (concat (cond ((and (featurep 'chise)
+                                 (boundp 'xemacs-chise-version))
+                            (concat "CHISE-MULE/" xemacs-chise-version))
+                           ((featurep 'utf-2000)
                             (concat "UTF-2000-MULE/" utf-2000-version))
                            ((featurep 'mule) "MULE"))
                      " XEmacs"
@@ -676,7 +685,7 @@ Tspecials means any character that matches with it in header must be quoted.")
   (concat "MIME-Version:"
          (mime-encode-field-body
           (concat " 1.0 (split by " mime-edit-version ")\n")
-          "MIME-Version:"))
+          "MIME-Version"))
   "MIME version field for message/partial.")
 
 
@@ -1641,6 +1650,13 @@ Parameter must be '(PROMPT CHOICE1 (CHOICE2...))."
 
 (defvar mime-edit-pgp-user-id nil)
 
+(defun mime-edit-delete-trailing-whitespace ()
+  (save-match-data
+    (save-excursion
+      (goto-char (point-min))
+      (while (re-search-forward "[ \t]+$" nil t)
+       (delete-region (match-beginning 0) (match-end 0))))))
+
 (defun mime-edit-sign-pgp-mime (beg end boundary)
   (save-excursion
     (save-restriction
@@ -1651,41 +1667,55 @@ Parameter must be '(PROMPT CHOICE1 (CHOICE2...))."
             (ctype    (car ret))
             (encoding (nth 1 ret))
             (pgp-boundary (concat "pgp-sign-" boundary))
+            (context (epg-make-context))
+            signature
             micalg)
+       (mime-edit-delete-trailing-whitespace) ; RFC3156
        (goto-char beg)
        (insert (format "Content-Type: %s\n" ctype))
        (if encoding
            (insert (format "Content-Transfer-Encoding: %s\n" encoding)))
        (insert "\n")
-       (or (let ((pgg-default-user-id 
-                  (or mime-edit-pgp-user-id
-                      (if from 
-                          (nth 1 (std11-extract-address-components from))
-                        pgg-default-user-id))))
-             (pgg-sign-region (point-min)(point-max)))
-           (throw 'mime-edit-error 'pgp-error))
-       (setq micalg
-             (cdr (assq 'hash-algorithm
-                        (cdar (with-current-buffer pgg-output-buffer
-                                (pgg-parse-armor-region 
-                                 (point-min)(point-max))))))
-             micalg 
-             (if micalg
-                 (concat "; micalg=pgp-" (downcase (symbol-name micalg)))
-               ""))
+       (epg-context-set-armor context t)
+       (epg-context-set-textmode context t)
+       (epg-context-set-signers
+        context
+        (epa-select-keys
+         "\
+Select keys for signing.
+If no one is selected, default secret key is used.  "
+         (if from 
+             (list (nth 1 (std11-extract-address-components from))))
+         t))
+       (condition-case error
+           (setq signature
+                 (epg-sign-string context
+                                  (buffer-substring (point-min) (point-max))
+                                  'detached))
+         (error (signal 'mime-edit-error (cdr error))))
+       (setq micalg (cdr (assq 'digest-algorithm
+                               (car (epg-context-result-for context 'sign)))))
        (goto-char beg)
        (insert (format "--[[multipart/signed;
  boundary=\"%s\"%s;
  protocol=\"application/pgp-signature\"][7bit]]
 --%s
-" pgp-boundary micalg pgp-boundary))
+"
+                       pgp-boundary
+                       (if micalg
+                           (concat "; micalg=pgp-"
+                                   (downcase
+                                    (cdr (assq micalg
+                                               epg-digest-algorithm-alist))))
+                         "")
+                       pgp-boundary))
        (goto-char (point-max))
        (insert (format "\n--%s
 Content-Type: application/pgp-signature
 Content-Transfer-Encoding: 7bit
 
 " pgp-boundary))
-       (insert-buffer-substring pgg-output-buffer)
+       (insert signature)
        (goto-char (point-max))
        (insert (format "\n--%s--\n" pgp-boundary))))))
 
@@ -1721,17 +1751,18 @@ Content-Transfer-Encoding: 7bit
 (defun mime-edit-encrypt-pgp-mime (beg end boundary)
   (save-excursion
     (save-restriction
-      (let (from recipients header)
+      (let (recipients header)
         (let ((ret (mime-edit-make-encrypt-recipient-header)))
-          (setq from (aref ret 0)
-                recipients (aref ret 1)
+          (setq recipients (aref ret 1)
                 header (aref ret 2)))
         (narrow-to-region beg end)
         (let* ((ret
                 (mime-edit-translate-region beg end boundary))
                (ctype    (car ret))
                (encoding (nth 1 ret))
-               (pgp-boundary (concat "pgp-" boundary)))
+               (pgp-boundary (concat "pgp-" boundary))
+              (context (epg-make-context))
+              cipher)
           (goto-char beg)
           (insert header)
           (insert (format "Content-Type: %s\n" ctype))
@@ -1739,19 +1770,22 @@ Content-Transfer-Encoding: 7bit
               (insert (format "Content-Transfer-Encoding: %s\n" encoding)))
           (insert "\n")
          (mime-encode-header-in-buffer)
-         (or (let ((pgg-default-user-id 
-                    (or mime-edit-pgp-user-id
-                        (if from 
-                            (nth 1 (std11-extract-address-components from))
-                          pgg-default-user-id))))                   
-               (pgg-encrypt-region 
-                (point-min) (point-max) 
-                (mapcar (lambda (recipient)
-                          (nth 1 (std11-extract-address-components
-                                  recipient)))
-                        (split-string recipients 
-                                      "\\([ \t\n]*,[ \t\n]*\\)+"))))
-             (throw 'mime-edit-error 'pgp-error))
+         (epg-context-set-armor context t)
+         (condition-case error
+             (setq cipher
+                   (epg-encrypt-string
+                    context
+                    (buffer-substring (point-min) (point-max))
+                    (epa-select-keys
+                     "\
+Select recipents for encryption.
+If no one is selected, symmetric encryption will be performed.  "
+                     (mapcar (lambda (recipient)
+                               (nth 1 (std11-extract-address-components
+                                       recipient)))
+                             (split-string recipients 
+                                           "\\([ \t\n]*,[ \t\n]*\\)+")))))
+           (error (signal 'mime-edit-error (cdr error))))
          (delete-region (point-min)(point-max))
          (goto-char beg)
          (insert (format "--[[multipart/encrypted;
@@ -1765,7 +1799,7 @@ Content-Type: application/octet-stream
 Content-Transfer-Encoding: 7bit
 
 " pgp-boundary pgp-boundary pgp-boundary))
-         (insert-buffer-substring pgg-output-buffer)
+         (insert cipher)
          (goto-char (point-max))
          (insert (format "\n--%s--\n" pgp-boundary)))))))
 
@@ -1776,14 +1810,20 @@ Content-Transfer-Encoding: 7bit
       (let* ((ret
              (mime-edit-translate-region beg end boundary))
             (ctype    (car ret))
-            (encoding (nth 1 ret)))
+            (encoding (nth 1 ret))
+            (context (epg-make-context))
+            signature)
        (goto-char beg)
        (insert (format "Content-Type: %s\n" ctype))
        (if encoding
            (insert (format "Content-Transfer-Encoding: %s\n" encoding)))
        (insert "\n")
-       (or (pgg-sign-region beg (point-max) 'clearsign)
-           (throw 'mime-edit-error 'pgp-error))
+       (condition-case error
+           (setq signature
+                 (epg-sign-string context
+                                  (buffer-substring beg (point-max))
+                                  'clearsign))
+         (error (signal 'mime-edit-error (cdr error))))
        (goto-char beg)
        (insert
         "--[[application/pgp; format=mime][7bit]]\n")
@@ -1800,18 +1840,34 @@ Content-Transfer-Encoding: 7bit
        (let* ((ret
                (mime-edit-translate-region beg end boundary))
               (ctype    (car ret))
-              (encoding (nth 1 ret)))
+              (encoding (nth 1 ret))
+              (context (epg-make-context))
+              cipher)
          (goto-char beg)
          (insert header)
          (insert (format "Content-Type: %s\n" ctype))
          (if encoding
              (insert (format "Content-Transfer-Encoding: %s\n" encoding)))
          (insert "\n")
-         (or (pgg-encrypt-region beg (point-max) recipients)
-             (throw 'mime-edit-error 'pgp-error))
+         (epg-context-set-armor context t)
+         (condition-case error
+             (setq cipher
+                   (epg-encrypt-string
+                    context
+                    (buffer-substring beg (point-max))
+                    (epa-select-keys
+                     "\
+Select recipents for encryption.
+If no one is selected, symmetric encryption will be performed.  "
+                     (mapcar (lambda (recipient)
+                               (nth 1 (std11-extract-address-components
+                                       recipient)))
+                             (split-string recipients 
+                                           "\\([ \t\n]*,[ \t\n]*\\)+")))))
+           (error (signal 'mime-edit-error (cdr error))))
          (goto-char beg)
          (insert
-          "--[[application/pgp; format=mime][7bit]]\n")
+          "--[[application/pgp; format=mime][7bit]]\n" cipher)
          )))))
 
 (defun mime-edit-sign-smime (beg end boundary)
@@ -2107,7 +2163,13 @@ Content-Transfer-Encoding: 7bit
                    (narrow-to-region beg (mime-edit-content-end))
                    (goto-char beg)
                    (while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t)
-                     (replace-match "\\1\r\n"))))
+                     ;; In a certain period, `replace-match' with "\\N"
+                     ;; converted 8-bit characters into multibyte string,
+                     ;; but it has been fixed at 2004-01-15.
+                     ;;(replace-match "\\1\r\n"))))
+                     (backward-char 1)
+                     (insert "\r")
+                     (forward-char 1))))
              (goto-char beg)
              (mime-encode-region beg (mime-edit-content-end)
                                  (or encoding "7bit"))
@@ -2253,7 +2315,10 @@ and insert data encoded as ENCODING."
   (interactive "P")
   (mime-edit-insert-tag "application" "pgp-keys")
   (mime-edit-define-encoding "7bit")
-  (pgg-insert-key)
+  (let ((context (epg-make-context)))
+    (epg-context-set-armor t)
+    (epg-export-keys-to-string context
+                              (epa-select-keys "Select keys for export.  ")))
   (if (and (not (eobp))
           (not (looking-at mime-edit-single-part-tag-regexp)))
       (insert (mime-make-text-tag) "\n")))
@@ -2370,14 +2435,10 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
       (setq mime-edit-message-max-length
            (or (cdr (assq major-mode mime-edit-message-max-lines-alist))
                mime-edit-message-default-max-lines)))
-  (let* ((mime-edit-draft-file-name
-         (or (buffer-file-name)
-             (make-temp-name
-              (expand-file-name "mime-draft" temporary-file-directory))))
-        (separator mail-header-separator)
-        (id (concat "\""
-                    (replace-space-with-underline (current-time-string))
-                    "@" (system-name) "\"")))
+  (let ((separator mail-header-separator)
+       (id (concat "\""
+                   (replace-space-with-underline (current-time-string))
+                   "@" (system-name) "\"")))
     (run-hooks 'mime-edit-before-split-hook)
     (let ((the-buf (current-buffer))
          (copy-buf (get-buffer-create " *Original Message*"))
@@ -2463,6 +2524,7 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
 ;;;
 
 (defvar mime-edit-buffer nil) ; buffer local variable
+(defvar mime-edit-temp-message-buffer nil) ; buffer local variable
 
 (defun mime-edit-preview-message ()
   "preview editing MIME message."
@@ -2570,8 +2632,11 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
                                              nil t))
                         (prog1 
                             (save-window-excursion
-                              (pgg-decrypt-region (match-beginning 0)
-                                                  (point-max)))
+                              (epg-decrypt-string
+                               (epg-make-context)
+                               (buffer-substring
+                                (match-beginning 0)
+                                (point-max))))
                           (delete-region (point-min)(point-max))))
                    (insert-buffer-substring pgg-output-buffer)
                    (mime-edit-decode-message-in-buffer