* pgg.el (pgg-save-coding-system): New macro.
[elisp/semi.git] / mime-edit.el
index ccff976..2005b28 100644 (file)
 (require 'signature)
 (require 'alist)
 (require 'invisible)
+(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)
 
 
 ;;; @ version
@@ -191,7 +200,7 @@ To insert a signature file automatically, call the function
      ("css") ; rfc2318
      ("xml") ; rfc2376
      ("x-latex")
-     ("x-rot13-47-48")
+     ;; ("x-rot13-47-48")
      )
     ("message"
      ("external-body"
@@ -638,16 +647,22 @@ If it is not specified for a major-mode,
                            ((featurep 'mule) "MULE"))
                      " XEmacs"
                      (if (string-match "^[0-9]+\\(\\.[0-9]+\\)" emacs-version)
-                         (concat "/"
-                                 (substring emacs-version 0 (match-end 0))
-                                 (if (and (boundp 'xemacs-betaname)
-                                          ;; It does not exist in XEmacs
-                                          ;; versions prior to 20.3.
-                                          xemacs-betaname)
-                                     (concat " " xemacs-betaname)
-                                   "")
-                                 " (" xemacs-codename ") ("
-                                 system-configuration ")")
+                         (concat
+                          "/"
+                          (substring emacs-version 0 (match-end 0))
+                          (cond ((and (boundp 'xemacs-betaname)
+                                      xemacs-betaname)
+                                 ;; It does not exist in XEmacs
+                                 ;; versions prior to 20.3.
+                                 (concat " " xemacs-betaname))
+                                ((and (boundp 'emacs-patch-level)
+                                      emacs-patch-level)
+                                 ;; It does not exist in FSF Emacs or in
+                                 ;; XEmacs versions earlier than 21.1.1.
+                                 (format " (patch %d)" emacs-patch-level))
+                                (t ""))
+                          " (" xemacs-codename ") ("
+                          system-configuration ")")
                        " (" emacs-version ")"))
            (let ((ver (if (string-match "\\.[0-9]+$" emacs-version)
                           (substring emacs-version 0 (match-beginning 0))
@@ -1627,6 +1642,7 @@ Parameter must be '(PROMPT CHOICE1 (CHOISE2 ...))."
 (defun mime-edit-translate-buffer ()
   "Encode the tagged MIME message in current buffer in MIME compliant message."
   (interactive)
+  (undo-boundary)
   (if (catch 'mime-edit-error
        (save-excursion
          (run-hooks 'mime-edit-translate-buffer-hook)
@@ -1738,18 +1754,41 @@ Parameter must be '(PROMPT CHOICE1 (CHOISE2 ...))."
              (mime-edit-translate-region beg end boundary))
             (ctype    (car ret))
             (encoding (nth 1 ret))
-            (pgp-boundary (concat "pgp-sign-" boundary)))
+            (pgp-boundary (concat "pgp-sign-" boundary))
+            micalg)
        (goto-char beg)
        (insert (format "Content-Type: %s\n" ctype))
        (if encoding
            (insert (format "Content-Transfer-Encoding: %s\n" encoding))
          )
        (insert "\n")
-       (or (as-binary-process
-            (funcall (pgp-function 'mime-sign)
-                     (point-min)(point-max) nil nil pgp-boundary))
+       (or (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)))
+               ""))
+       (goto-char beg)
+       (insert (format "--[[multipart/signed;
+ boundary=\"%s\"%s;
+ protocol=\"application/pgp-signature\"][7bit]]
+--%s
+" pgp-boundary micalg 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)
+       (goto-char (point-max))
+       (insert (format "\n--%s--\n" pgp-boundary))
        ))))
 
 (defvar mime-edit-encrypt-recipient-fields-list '("To" "cc"))
@@ -1790,28 +1829,40 @@ Parameter must be '(PROMPT CHOICE1 (CHOISE2 ...))."
   (save-excursion
     (save-restriction
       (let (from recipients header)
-       (let ((ret (mime-edit-make-encrypt-recipient-header)))
-         (setq from (aref ret 0)
-               recipients (aref ret 1)
-               header (aref ret 2))
+        (let ((ret (mime-edit-make-encrypt-recipient-header)))
+          (setq from (aref ret 0)
+                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)))
-         (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 (funcall (pgp-function 'encrypt)
-                      recipients (point-min) (point-max) from)
+        (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)))
+          (goto-char beg)
+          (insert header)
+          (insert (format "Content-Type: %s\n" ctype))
+          (if encoding
+              (insert (format "Content-Transfer-Encoding: %s\n" encoding))
+            )
+          (insert "\n")
+         (eword-encode-header)
+         (or (let ((pgg-default-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)
              )
+         (delete-region (point-min)(point-max))
          (goto-char beg)
          (insert (format "--[[multipart/encrypted;
  boundary=\"%s\";
@@ -1824,6 +1875,7 @@ Content-Type: application/octet-stream
 Content-Transfer-Encoding: 7bit
 
 " pgp-boundary pgp-boundary pgp-boundary))
+         (insert-buffer-substring pgg-output-buffer)
          (goto-char (point-max))
          (insert (format "\n--%s--\n" pgp-boundary))
          )))))
@@ -1842,9 +1894,7 @@ Content-Transfer-Encoding: 7bit
            (insert (format "Content-Transfer-Encoding: %s\n" encoding))
          )
        (insert "\n")
-       (or (as-binary-process
-            (funcall (pgp-function 'traditional-sign)
-                     beg (point-max)))
+       (or (pgg-sign-region beg (point-max) 'clearsign)
            (throw 'mime-edit-error 'pgp-error)
            )
        (goto-char beg)
@@ -1873,10 +1923,7 @@ Content-Transfer-Encoding: 7bit
              (insert (format "Content-Transfer-Encoding: %s\n" encoding))
            )
          (insert "\n")
-         (or (as-binary-process
-              (funcall (pgp-function 'encrypt)
-                       recipients beg (point-max) nil 'maybe)
-              )
+         (or (pgg-sign-region beg (point-max) recipients)
              (throw 'mime-edit-error 'pgp-error)
              )
          (goto-char beg)
@@ -2307,7 +2354,7 @@ and insert data encoded as ENCODING."
   (interactive "P")
   (mime-edit-insert-tag "application" "pgp-keys")
   (mime-edit-define-encoding "7bit")
-  (funcall (pgp-function 'insert-key))
+  (pgg-insert-key)
   )
 
 
@@ -2367,12 +2414,14 @@ Optional TRANSFER-LEVEL is a number of transfer-level, 7 or 8."
     ))
   (if arg
       (progn
-       (setq mime-edit-pgp-processing 'sign)
+       (or (memq 'sign mime-edit-pgp-processing)
+           (setq mime-edit-pgp-processing 
+                 (nconc mime-edit-pgp-processing 
+                        (copy-sequence '(sign)))))
        (message "This message will be signed.")
        )
-    (if (eq mime-edit-pgp-processing 'sign)
-       (setq mime-edit-pgp-processing nil)
-      )
+    (setq mime-edit-pgp-processing 
+         (delq 'sign mime-edit-pgp-processing))
     (message "This message will not be signed.")
     ))
 
@@ -2383,12 +2432,14 @@ Optional TRANSFER-LEVEL is a number of transfer-level, 7 or 8."
     ))
   (if arg
       (progn
-       (setq mime-edit-pgp-processing 'encrypt)
+       (or (memq 'encrypt mime-edit-pgp-processing)
+           (setq mime-edit-pgp-processing 
+                 (nconc mime-edit-pgp-processing 
+                        (copy-sequence '(encrypt)))))
        (message "This message will be encrypt.")
        )
-    (if (eq mime-edit-pgp-processing 'encrypt)
-       (setq mime-edit-pgp-processing nil)
-      )
+    (setq mime-edit-pgp-processing
+         (delq 'encrypt mime-edit-pgp-processing))
     (message "This message will not be encrypt.")
     ))
 
@@ -2398,15 +2449,18 @@ Optional TRANSFER-LEVEL is a number of transfer-level, 7 or 8."
               (if (search-forward (concat "\n" mail-header-separator "\n"))
                   (match-end 0)
                 )))
-       (end (point-max))
        )
     (if beg
-       (cond ((eq mime-edit-pgp-processing 'sign)
-              (mime-edit-enclose-pgp-signed-region beg end)
-              )
-             ((eq mime-edit-pgp-processing 'encrypt)
-              (mime-edit-enclose-pgp-encrypted-region beg end)
-              ))
+       (dolist (pgp-processing mime-edit-pgp-processing)
+         (case pgp-processing
+           (sign
+            (mime-edit-enclose-pgp-signed-region 
+             beg (point-max))
+            )
+           (encrypt
+            (mime-edit-enclose-pgp-encrypted-region 
+             beg (point-max))
+            )))
       )))
 
 
@@ -2551,6 +2605,7 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
         (buf-name (buffer-name))
         (temp-buf-name (concat "*temp-article:" buf-name "*"))
         (buf (get-buffer temp-buf-name))
+        (pgp-processing mime-edit-pgp-processing)
         )
     (if buf
        (progn
@@ -2566,6 +2621,7 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
     (setq mail-header-separator separator)
     (make-local-variable 'mime-edit-buffer)
     (setq mime-edit-buffer the-buf)
+    (setq mime-edit-pgp-processing pgp-processing)
 
     (run-hooks 'mime-edit-translate-hook)
     (mime-edit-translate-buffer)
@@ -2610,7 +2666,12 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
     string))
 
 (defun mime-edit-decode-multipart-in-buffer (content-type not-decode-text)
-  (let* ((subtype (mime-content-type-subtype content-type))
+  (let* ((subtype
+         (or
+          (cdr (assoc (mime-content-type-parameter content-type "protocol")
+                      '(("application/pgp-encrypted" . pgp-encrypted)
+                        ("application/pgp-signature" . pgp-signed))))
+          (mime-content-type-subtype content-type)))
         (boundary (mime-content-type-parameter content-type "boundary"))
         (boundary-pat (concat "\n--" (regexp-quote boundary) "[ \t]*\n")))
     (re-search-forward boundary-pat nil t)
@@ -2638,13 +2699,36 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
                )
              (save-restriction
                (narrow-to-region beg end)
-               (mime-edit-decode-message-in-buffer
-                (if (eq subtype 'digest)
-                    (eval-when-compile
-                      (make-mime-content-type 'message 'rfc822))
-                  )
-                not-decode-text)
-               (goto-char (point-max))
+               (cond
+                ((eq subtype 'pgp-encrypted)
+                 (when (and
+                        (progn
+                          (goto-char (point-min))
+                          (re-search-forward "^-+BEGIN PGP MESSAGE-+$"
+                                             nil t))
+                        (prog1 
+                            (save-window-excursion
+                              (pgg-decrypt-region (match-beginning 0)
+                                                  (point-max)))
+                          (delete-region (point-min)(point-max))))
+                   (insert-buffer-substring pgg-output-buffer)
+                   (mime-edit-decode-message-in-buffer 
+                    nil not-decode-text)
+                   (delete-region (goto-char (point-min))
+                                  (if (search-forward "\n\n" nil t)
+                                      (match-end 0)
+                                    (point-min)))
+                   (goto-char (point-max))
+                   ))
+                (t 
+                 (mime-edit-decode-message-in-buffer
+                  (if (eq subtype 'digest)
+                      (eval-when-compile
+                        (make-mime-content-type 'message 'rfc822))
+                    )
+                  not-decode-text)
+                 (goto-char (point-max))
+                 ))
                ))))
        ))
     (goto-char (point-min))
@@ -2656,7 +2740,8 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
                         )))
     ))
 
-(defun mime-edit-decode-single-part-in-buffer (content-type not-decode-text)
+(defun mime-edit-decode-single-part-in-buffer
+  (content-type not-decode-text &optional content-disposition)
   (let* ((type (mime-content-type-primary-type content-type))
         (subtype (mime-content-type-subtype content-type))
         (ctype (format "%s/%s" type subtype))
@@ -2683,7 +2768,38 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
         encoded
         (limit (save-excursion
                  (if (search-forward "\n\n" nil t)
-                     (1- (point))))))
+                     (1- (point)))))
+        (disposition-type
+         (mime-content-disposition-type content-disposition))
+        (disposition-str
+         (if disposition-type
+             (let ((bytes (+ 21 (length (format "%s" disposition-type)))))
+               (mapconcat (function
+                           (lambda (attr)
+                             (let* ((str (concat
+                                          (car attr)
+                                          "="
+                                          (if (string-equal "filename"
+                                                            (car attr))
+                                              (std11-wrap-as-quoted-string
+                                               (cdr attr))
+                                            (cdr attr))))
+                                    (bs (length str)))
+                               (setq bytes (+ bytes bs 2))
+                               (if (< bytes 76)
+                                   (concat "; " str)
+                                 (setq bytes (+ bs 1))
+                                 (concat ";\n " str)
+                                 )
+                               )))
+                          (mime-content-disposition-parameters
+                           content-disposition)
+                          ""))))
+        )
+    (if disposition-type
+       (setq pstr (format "%s\nContent-Disposition: %s%s"
+                          pstr disposition-type disposition-str))
+      )
     (save-excursion
       (if (re-search-forward
           "^Content-Transfer-Encoding:" limit t)
@@ -2758,18 +2874,24 @@ Content-Type: message/partial; id=%s; number=%d; total=%d\n%s\n"
              (mime-edit-decode-multipart-in-buffer ctl not-decode-text)
              )
             (t
-             (mime-edit-decode-single-part-in-buffer ctl not-decode-text)
+             (mime-edit-decode-single-part-in-buffer
+              ctl not-decode-text (mime-read-Content-Disposition))
              )))
        (or not-decode-text
            (decode-mime-charset-region (point-min) (point-max)
                                        default-mime-charset))
        )
-      (save-restriction
-       (std11-narrow-to-header)
-       (goto-char (point-min))
-       (while (re-search-forward mime-edit-again-ignored-field-regexp nil t)
-         (delete-region (match-beginning 0) (1+ (std11-field-end)))
-         ))
+      (if (= (point-min) 1)
+         (progn
+           (save-restriction
+             (std11-narrow-to-header)
+             (goto-char (point-min))
+             (while (re-search-forward
+                     mime-edit-again-ignored-field-regexp nil t)
+               (delete-region (match-beginning 0) (1+ (std11-field-end)))
+               ))
+           (mime-decode-header-in-buffer (not not-decode-text))
+           ))
       (mime-decode-header-in-buffer (not not-decode-text))
       )))