-;;; mm-view.el --- Functions for viewing MIME objects
-;; Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+;;; mm-view.el --- functions for viewing MIME objects
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; This file is part of GNU Emacs.
(unless (fboundp 'diff-mode)
(autoload 'diff-mode "diff-mode" "" t nil)))
+(defvar mm-text-html-renderer-alist
+ '((w3 . mm-inline-text-html-render-with-w3)
+ (w3m . mm-inline-text-html-render-with-w3m)
+ (links mm-inline-render-with-file
+ mm-links-remove-leading-blank
+ "links" "-dump" file)
+ (lynx mm-inline-render-with-stdin nil
+ "lynx" "-dump" "-force_html" "-stdin"))
+ "The attributes of renderer types for text/html.")
+
+(defvar mm-text-html-washer-alist
+ '((w3 . gnus-article-wash-html-with-w3)
+ (w3m . gnus-article-wash-html-with-w3m)
+ (links mm-inline-wash-with-file
+ mm-links-remove-leading-blank
+ "links" "-dump" file)
+ (lynx mm-inline-wash-with-stdin nil
+ "lynx" "-dump" "-force_html" "-stdin"))
+ "The attributes of washer types for text/html.")
+
+;;; Internal variables.
+
;;;
;;; Functions for displaying various formats inline
;;;
+
(defun mm-inline-image-emacs (handle)
(let ((b (point-marker))
buffer-read-only)
(require 'url-vars)
(setq mm-w3-setup t)))
-(defun mm-inline-text (handle)
- (let ((type (mm-handle-media-subtype handle))
- text buffer-read-only)
- (cond
- ((equal type "html")
- (mm-setup-w3)
- (setq text (mm-get-part handle))
- (let ((b (point))
- (url-standalone-mode t)
- (url-current-object
- (url-generic-parse-url (format "cid:%s" (mm-handle-id handle))))
- (width (window-width))
- (charset (mail-content-type-get
- (mm-handle-type handle) 'charset)))
- (save-excursion
- (insert text)
+(defun mm-inline-text-html-render-with-w3 (handle)
+ (mm-setup-w3)
+ (let ((text (mm-get-part handle))
+ (b (point))
+ (url-standalone-mode t)
+ (url-gateway-unplugged t)
+ (w3-honor-stylesheets nil)
+ (url-current-object
+ (url-generic-parse-url (format "cid:%s" (mm-handle-id handle))))
+ (width (window-width))
+ (charset (mail-content-type-get
+ (mm-handle-type handle) 'charset)))
+ (save-excursion
+ (insert text)
+ (save-restriction
+ (narrow-to-region b (point))
+ (goto-char (point-min))
+ (if (or (and (boundp 'w3-meta-content-type-charset-regexp)
+ (re-search-forward
+ w3-meta-content-type-charset-regexp nil t))
+ (and (boundp 'w3-meta-charset-content-type-regexp)
+ (re-search-forward
+ w3-meta-charset-content-type-regexp nil t)))
+ (setq charset
+ (or (let ((bsubstr (buffer-substring-no-properties
+ (match-beginning 2)
+ (match-end 2))))
+ (if (fboundp 'w3-coding-system-for-mime-charset)
+ (w3-coding-system-for-mime-charset bsubstr)
+ (mm-charset-to-coding-system bsubstr)))
+ charset)))
+ (delete-region (point-min) (point-max))
+ (insert (mm-decode-string text charset))
+ (save-window-excursion
(save-restriction
- (narrow-to-region b (point))
- (goto-char (point-min))
- (if (or (and (boundp 'w3-meta-content-type-charset-regexp)
- (re-search-forward
- w3-meta-content-type-charset-regexp nil t))
- (and (boundp 'w3-meta-charset-content-type-regexp)
- (re-search-forward
- w3-meta-charset-content-type-regexp nil t)))
- (setq charset
- (or (let ((bsubstr (buffer-substring-no-properties
- (match-beginning 2)
- (match-end 2))))
- (if (fboundp 'w3-coding-system-for-mime-charset)
- (w3-coding-system-for-mime-charset bsubstr)
- (mm-charset-to-coding-system bsubstr)))
- charset)))
- (delete-region (point-min) (point-max))
- (insert (mm-decode-string text charset))
- (save-window-excursion
- (save-restriction
- (let ((w3-strict-width width)
- ;; Don't let w3 set the global version of
- ;; this variable.
- (fill-column fill-column)
- (url-standalone-mode t))
- (condition-case var
- (w3-region (point-min) (point-max))
- (error
- (delete-region (point-min) (point-max))
- (let ((b (point))
- (charset (mail-content-type-get
- (mm-handle-type handle) 'charset)))
- (if (or (eq charset 'gnus-decoded)
- (eq mail-parse-charset 'gnus-decoded))
- (save-restriction
- (narrow-to-region (point) (point))
- (mm-insert-part handle)
- (goto-char (point-max)))
- (insert (mm-decode-string (mm-get-part handle)
- charset))))
- (message
- "Error while rendering html; showing as text/plain"))))))
- (mm-handle-set-undisplayer
- handle
- `(lambda ()
- (let (buffer-read-only)
- (if (functionp 'remove-specifier)
- (mapcar (lambda (prop)
- (remove-specifier
- (face-property 'default prop)
- (current-buffer)))
- '(background background-pixmap foreground)))
- (delete-region ,(point-min-marker)
- ,(point-max-marker)))))))))
- ((or (equal type "enriched")
- (equal type "richtext"))
- (save-excursion
- (mm-with-unibyte-buffer
+ (let ((w3-strict-width width)
+ ;; Don't let w3 set the global version of
+ ;; this variable.
+ (fill-column fill-column))
+ (condition-case var
+ (w3-region (point-min) (point-max))
+ (error
+ (delete-region (point-min) (point-max))
+ (let ((b (point))
+ (charset (mail-content-type-get
+ (mm-handle-type handle) 'charset)))
+ (if (or (eq charset 'gnus-decoded)
+ (eq mail-parse-charset 'gnus-decoded))
+ (save-restriction
+ (narrow-to-region (point) (point))
+ (mm-insert-part handle)
+ (goto-char (point-max)))
+ (insert (mm-decode-string (mm-get-part handle)
+ charset))))
+ (message
+ "Error while rendering html; showing as text/plain"))))))
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda ()
+ (let (buffer-read-only)
+ (if (functionp 'remove-specifier)
+ (mapcar (lambda (prop)
+ (remove-specifier
+ (face-property 'default prop)
+ (current-buffer)))
+ '(background background-pixmap foreground)))
+ (delete-region ,(point-min-marker)
+ ,(point-max-marker)))))))))
+
+(defvar mm-w3m-mode-map nil
+ "Local keymap for inlined text/html part rendered by emacs-w3m. It will
+be different from `w3m-mode-map' to use in the article buffer.")
+
+(defvar mm-w3m-mode-command-alist
+ '((backward-char)
+ (describe-mode)
+ (forward-char)
+ (goto-line)
+ (next-line)
+ (previous-line)
+ (w3m-antenna)
+ (w3m-antenna-add-current-url)
+ (w3m-bookmark-add-current-url)
+ (w3m-bookmark-add-this-url)
+ (w3m-bookmark-view)
+ (w3m-close-window)
+ (w3m-copy-buffer)
+ (w3m-delete-buffer)
+ (w3m-dtree)
+ (w3m-edit-current-url)
+ (w3m-edit-this-url)
+ (w3m-gohome)
+ (w3m-goto-url)
+ (w3m-goto-url-new-session)
+ (w3m-history)
+ (w3m-history-restore-position)
+ (w3m-history-store-position)
+ (w3m-namazu)
+ (w3m-next-buffer)
+ (w3m-previous-buffer)
+ (w3m-quit)
+ (w3m-redisplay-with-charset)
+ (w3m-reload-this-page)
+ (w3m-scroll-down-or-previous-url)
+ (w3m-scroll-up-or-next-url)
+ (w3m-search)
+ (w3m-select-buffer)
+ (w3m-switch-buffer)
+ (w3m-view-header)
+ (w3m-view-parent-page)
+ (w3m-view-previous-page)
+ (w3m-view-source)
+ (w3m-weather))
+ "Alist of commands to use for emacs-w3m in the article buffer. Each
+element looks like (FROM-COMMAND . TO-COMMAND); FROM-COMMAND should be
+registered in `w3m-mode-map' which will be substituted by TO-COMMAND
+in `mm-w3m-mode-map'. If TO-COMMAND is nil, an article command key
+will not be substituted.")
+
+(defvar mm-w3m-mode-dont-bind-keys (list [up] [right] [left] [down])
+ "List of keys which should not be bound for the emacs-w3m commands.")
+
+(defvar mm-w3m-setup nil
+ "Whether gnus-article-mode has been setup to use emacs-w3m.")
+
+(defun mm-setup-w3m ()
+ "Setup gnus-article-mode to use emacs-w3m."
+ (unless mm-w3m-setup
+ (require 'w3m)
+ (unless mm-w3m-mode-map
+ (setq mm-w3m-mode-map (copy-keymap w3m-mode-map))
+ (dolist (def mm-w3m-mode-command-alist)
+ (condition-case nil
+ (substitute-key-definition (car def) (cdr def) mm-w3m-mode-map)
+ (error)))
+ (dolist (key mm-w3m-mode-dont-bind-keys)
+ (condition-case nil
+ (define-key mm-w3m-mode-map key nil)
+ (error))))
+ (unless (assq 'gnus-article-mode w3m-cid-retrieve-function-alist)
+ (push (cons 'gnus-article-mode 'mm-w3m-cid-retrieve)
+ w3m-cid-retrieve-function-alist))
+ (setq mm-w3m-setup t)))
+
+(defun mm-w3m-cid-retrieve (url &rest args)
+ "Insert a content pointed by URL if it has the cid: scheme."
+ (when (string-match "\\`cid:" url)
+ (setq url (concat "<" (substring url (match-end 0)) ">"))
+ (catch 'found-handle
+ (dolist (handle (with-current-buffer w3m-current-buffer
+ gnus-article-mime-handles))
+ (when (and (listp handle)
+ (equal url (mm-handle-id handle)))
(mm-insert-part handle)
- (save-window-excursion
- (enriched-decode (point-min) (point-max))
- (setq text (buffer-string)))))
- (mm-insert-inline handle text))
- ((equal type "x-vcard")
- (mm-insert-inline
+ (throw 'found-handle (mm-handle-media-type handle)))))))
+
+(defun mm-inline-text-html-render-with-w3m (handle)
+ "Render a text/html part using emacs-w3m."
+ (mm-setup-w3m)
+ (let ((text (mm-get-part handle))
+ (b (point))
+ (charset (mail-content-type-get (mm-handle-type handle) 'charset)))
+ (save-excursion
+ (insert text)
+ (save-restriction
+ (narrow-to-region b (point))
+ (goto-char (point-min))
+ (when (re-search-forward w3m-meta-content-type-charset-regexp nil t)
+ (setq charset (or (w3m-charset-to-coding-system (match-string 2))
+ charset)))
+ (when charset
+ (delete-region (point-min) (point-max))
+ (insert (mm-decode-string text charset)))
+ (let ((w3m-safe-url-regexp (if mm-inline-text-html-with-images
+ nil
+ "\\`cid:"))
+ (w3m-display-inline-images mm-inline-text-html-with-images)
+ w3m-force-redisplay)
+ (w3m-region (point-min) (point-max)))
+ (when mm-inline-text-html-with-w3m-keymap
+ (add-text-properties
+ (point-min) (point-max)
+ (append '(mm-inline-text-html-with-w3m t)
+ (gnus-local-map-property mm-w3m-mode-map)))))
+ (mm-handle-set-undisplayer
handle
- (concat "\n-- \n"
+ `(lambda ()
+ (let (buffer-read-only)
+ (if (functionp 'remove-specifier)
+ (mapcar (lambda (prop)
+ (remove-specifier
+ (face-property 'default prop)
+ (current-buffer)))
+ '(background background-pixmap foreground)))
+ (delete-region ,(point-min-marker)
+ ,(point-max-marker))))))))
+
+(defun mm-links-remove-leading-blank ()
+ ;; Delete the annoying three spaces preceding each line of links
+ ;; output.
+ (goto-char (point-min))
+ (while (re-search-forward "^ " nil t)
+ (delete-region (match-beginning 0) (match-end 0))))
+
+(defun mm-inline-wash-with-file (post-func cmd &rest args)
+ (let ((file (make-temp-name
+ (expand-file-name "mm" mm-tmp-directory))))
+ (let ((coding-system-for-write 'binary))
+ (write-region (point-min) (point-max) file nil 'silent))
+ (delete-region (point-min) (point-max))
+ (unwind-protect
+ (apply 'call-process cmd nil t nil (mapcar 'eval args))
+ (delete-file file))
+ (and post-func (funcall post-func))))
+
+(defun mm-inline-wash-with-stdin (post-func cmd &rest args)
+ (let ((coding-system-for-write 'binary))
+ (apply 'call-process-region (point-min) (point-max)
+ cmd t t nil args))
+ (and post-func (funcall post-func)))
+
+(defun mm-inline-render-with-file (handle post-func cmd &rest args)
+ (let ((source (mm-get-part handle)))
+ (mm-insert-inline
+ handle
+ (mm-with-unibyte-buffer
+ (insert source)
+ (apply 'mm-inline-wash-with-file post-func cmd args)
+ (buffer-string)))))
+
+(defun mm-inline-render-with-stdin (handle post-func cmd &rest args)
+ (let ((source (mm-get-part handle)))
+ (mm-insert-inline
+ handle
+ (mm-with-unibyte-buffer
+ (insert source)
+ (apply 'mm-inline-wash-with-stdin post-func cmd args)
+ (buffer-string)))))
+
+(defun mm-inline-render-with-function (handle func &rest args)
+ (let ((source (mm-get-part handle)))
+ (mm-insert-inline
+ handle
+ (mm-with-unibyte-buffer
+ (insert source)
+ (apply func args)
+ (buffer-string)))))
+
+(defun mm-inline-text-html (handle)
+ (let* ((func (or mm-inline-text-html-renderer mm-text-html-renderer))
+ (entry (assq func mm-text-html-renderer-alist))
+ buffer-read-only)
+ (if entry
+ (setq func (cdr entry)))
+ (cond
+ ((gnus-functionp func)
+ (funcall func handle))
+ (t
+ (apply (car func) handle (cdr func))))))
+
+(defun mm-inline-text-vcard (handle)
+ (let (buffer-read-only)
+ (mm-insert-inline
+ handle
+ (concat "\n-- \n"
+ (ignore-errors
(if (fboundp 'vcard-pretty-print)
(vcard-pretty-print (mm-get-part handle))
(vcard-format-string
(vcard-parse-string (mm-get-part handle)
- 'vcard-standard-filter))))))
- (t
- (let ((b (point))
- (charset (mail-content-type-get
- (mm-handle-type handle) 'charset)))
- (if (or (eq charset 'gnus-decoded)
- ;; This is probably not entirely correct, but
- ;; makes rfc822 parts with embedded multiparts work.
- (eq mail-parse-charset 'gnus-decoded))
- (save-restriction
- (narrow-to-region (point) (point))
- (mm-insert-part handle)
- (goto-char (point-max)))
- (insert (mm-decode-string (mm-get-part handle) charset)))
- (when (and (equal type "plain")
- (equal (cdr (assoc 'format (mm-handle-type handle)))
- "flowed"))
- (save-restriction
- (narrow-to-region b (point))
- (goto-char b)
- (fill-flowed)
- (goto-char (point-max))))
+ 'vcard-standard-filter))))))))
+
+(defun mm-inline-text (handle)
+ (let ((b (point))
+ (type (mm-handle-media-subtype handle))
+ (charset (mail-content-type-get
+ (mm-handle-type handle) 'charset))
+ buffer-read-only)
+ (if (or (eq charset 'gnus-decoded)
+ ;; This is probably not entirely correct, but
+ ;; makes rfc822 parts with embedded multiparts work.
+ (eq mail-parse-charset 'gnus-decoded))
(save-restriction
- (narrow-to-region b (point))
- (set-text-properties (point-min) (point-max) nil)
- (mm-handle-set-undisplayer
- handle
- `(lambda ()
- (let (buffer-read-only)
- (delete-region ,(point-min-marker)
- ,(point-max-marker)))))))))))
+ (narrow-to-region (point) (point))
+ (mm-insert-part handle)
+ (goto-char (point-max)))
+ (insert (mm-decode-string (mm-get-part handle) charset)))
+ (when (and (equal type "plain")
+ (equal (cdr (assoc 'format (mm-handle-type handle)))
+ "flowed"))
+ (save-restriction
+ (narrow-to-region b (point))
+ (goto-char b)
+ (fill-flowed)
+ (goto-char (point-max))))
+ (save-restriction
+ (narrow-to-region b (point))
+ (set-text-properties (point-min) (point-max) nil)
+ (when (or (equal type "enriched")
+ (equal type "richtext"))
+ (enriched-decode (point-min) (point-max)))
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda ()
+ (let (buffer-read-only)
+ (delete-region ,(point-min-marker)
+ ,(point-max-marker))))))))
(defun mm-insert-inline (handle text)
"Insert TEXT inline from HANDLE."
(defun mm-w3-prepare-buffer ()
(require 'w3)
- (let ((url-standalone-mode t))
+ (let ((url-standalone-mode t)
+ (url-gateway-unplugged t)
+ (w3-honor-stylesheets nil))
(w3-prepare-buffer)))
(defun mm-view-message ()
(buffer-disable-undo)
(mm-insert-part handle)
(funcall mode)
+ (require 'font-lock)
(let ((font-lock-verbose nil))
;; I find font-lock a bit too verbose.
(font-lock-fontify-buffer))
(mm-string-as-unibyte
(apply 'concat
(mapcar 'char-to-string
- (list ?\x30 ?\x82 ?\x01 ?\x91 ?\x06 ?\x09 ?\x2a ?\x86 ?\x48
+ (list ?\x30 ?\x5c ?\x28 ?\x80 ?\x5c ?\x7c ?\x81 ?\x2e ?\x5c
+ ?\x7c ?\x82 ?\x2e ?\x2e ?\x5c ?\x7c ?\x83 ?\x2e ?\x2e
+ ?\x2e ?\x5c ?\x29 ?\x06 ?\x09 ?\x5c ?\x2a ?\x86 ?\x48
?\x86 ?\xf7 ?\x0d ?\x01 ?\x07 ?\x02)))))
-
+
;; id-envelopedData OBJECT IDENTIFIER ::= { iso(1) member-body(2)
;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 3 }
(defvar mm-pkcs7-enveloped-magic
(mm-string-as-unibyte
(apply 'concat
(mapcar 'char-to-string
- (list ?\x30 ?\x82 ?\x01 ?\x91 ?\x06 ?\x09 ?\x2a ?\x86 ?\x48
+ (list ?\x30 ?\x5c ?\x28 ?\x80 ?\x5c ?\x7c ?\x81 ?\x2e ?\x5c
+ ?\x7c ?\x82 ?\x2e ?\x2e ?\x5c ?\x7c ?\x83 ?\x2e ?\x2e
+ ?\x2e ?\x5c ?\x29 ?\x06 ?\x09 ?\x5c ?\x2a ?\x86 ?\x48
?\x86 ?\xf7 ?\x0d ?\x01 ?\x07 ?\x03)))))
-
+
(defun mm-view-pkcs7-get-type (handle)
- (with-temp-buffer
+ (mm-with-unibyte-buffer
(mm-insert-part handle)
- (cond ((looking-at (regexp-quote mm-pkcs7-enveloped-magic))
+ (cond ((looking-at mm-pkcs7-enveloped-magic)
'enveloped)
- ((looking-at (regexp-quote mm-pkcs7-signed-magic))
+ ((looking-at mm-pkcs7-signed-magic)
'signed)
(t
(error "Could not identify PKCS#7 type")))))
(otherwise (error "Unknown or unimplemented PKCS#7 type"))))
(defun mm-view-pkcs7-decrypt (handle)
- (if (cond
- ((eq mm-decrypt-option 'never) nil)
- ((eq mm-decrypt-option 'always) t)
- ((eq mm-decrypt-option 'known) t)
- (t (y-or-n-p
- (format "Decrypt (S/MIME) part? "))))
- (let (res)
- (with-temp-buffer
- (insert-buffer (mm-handle-buffer handle))
- (goto-char (point-min))
- (insert "MIME-Version: 1.0\n")
- (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m")
- (smime-decrypt-region
- (point-min) (point-max)
- (if (= (length smime-keys) 1)
- (cadar smime-keys)
- (smime-get-key-by-email
- (completing-read "Decrypt this part with which key? "
- smime-keys nil nil
- (and (listp (car-safe smime-keys))
- (caar smime-keys))))))
- (setq res (buffer-string)))
- (mm-insert-inline handle res))))
+ (insert-buffer (mm-handle-buffer handle))
+ (goto-char (point-min))
+ (insert "MIME-Version: 1.0\n")
+ (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m")
+ (smime-decrypt-region
+ (point-min) (point-max)
+ (if (= (length smime-keys) 1)
+ (cadar smime-keys)
+ (smime-get-key-by-email
+ (completing-read "Decrypt this part with which key? "
+ smime-keys nil nil
+ (and (listp (car-safe smime-keys))
+ (caar smime-keys)))))))
(provide 'mm-view)
projects / gnus / blobdiff