(eval-when-compile (require 'cl))
(require 'mail-parse)
(require 'mailcap)
(require 'mm-bodies)
(require 'mm-decode)
(eval-and-compile
(autoload 'gnus-article-prepare-display "gnus-art")
(autoload 'vcard-parse-string "vcard")
(autoload 'vcard-format-string "vcard")
(autoload 'fill-flowed "flow-fill")
(autoload 'html2text "html2text" nil t)
(unless (fboundp 'diff-mode)
(autoload 'diff-mode "diff-mode" "" t nil)))
(defvar gnus-article-mime-handles)
(defvar gnus-newsgroup-charset)
(defvar smime-keys)
(defvar w3m-cid-retrieve-function-alist)
(defvar w3m-current-buffer)
(defvar w3m-display-inline-images)
(defvar w3m-minor-mode-map)
(defvar mm-text-html-renderer-alist
'((w3 . mm-inline-text-html-render-with-w3)
(w3m . mm-inline-text-html-render-with-w3m)
(w3m-standalone . mm-inline-text-html-render-with-w3m-standalone)
(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" "-nolist")
(html2text mm-inline-render-with-function html2text))
"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)
(w3m-standalone . gnus-article-wash-html-with-w3m-standalone)
(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" "-nolist")
(html2text html2text))
"The attributes of washer types for text/html.")
(defcustom mm-fill-flowed t
"If non-nil an format=flowed article will be displayed flowed."
:type 'boolean
:version "22.1"
:group 'mime-display)
(defun mm-inline-image-emacs (handle)
(let ((b (point-marker))
buffer-read-only)
(put-image (mm-get-image handle) b)
(insert "\n\n")
(mm-handle-set-undisplayer
handle
`(lambda ()
(let ((b ,b)
buffer-read-only)
(remove-images b b)
(delete-region b (+ b 2)))))))
(defun mm-inline-image-xemacs (handle)
(insert "\n\n")
(forward-char -2)
(let ((annot (make-annotation (mm-get-image handle) nil 'text))
buffer-read-only)
(mm-handle-set-undisplayer
handle
`(lambda ()
(let ((b ,(point-marker))
buffer-read-only)
(delete-annotation ,annot)
(delete-region (- b 2) b))))
(set-extent-property annot 'mm t)
(set-extent-property annot 'duplicable t)))
(eval-and-compile
(if (featurep 'xemacs)
(defalias 'mm-inline-image 'mm-inline-image-xemacs)
(defalias 'mm-inline-image 'mm-inline-image-emacs)))
(defvar mm-w3-setup nil)
(defun mm-setup-w3 ()
(unless mm-w3-setup
(require 'w3)
(w3-do-setup)
(require 'url)
(require 'w3-vars)
(require 'url-vars)
(setq mm-w3-setup t)))
(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
(let ((w3-strict-width width)
(fill-column fill-column))
(if (or debug-on-error debug-on-quit)
(w3-region (point-min) (point-max))
(condition-case ()
(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-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 (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))
(setq w3m-display-inline-images mm-inline-text-html-with-images))
(defun mm-w3m-cid-retrieve-1 (url handle)
(dolist (elem handle)
(when (consp elem)
(when (equal url (mm-handle-id elem))
(mm-insert-part elem)
(throw 'found-handle (mm-handle-media-type elem)))
(when (and (stringp (car elem))
(equal "multipart" (mm-handle-media-supertype elem)))
(mm-w3m-cid-retrieve-1 url elem)))))
(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)
(or (catch 'found-handle
(mm-w3m-cid-retrieve-1
(setq url (concat "<" (substring url (match-end 0)) ">"))
(with-current-buffer w3m-current-buffer
gnus-article-mime-handles)))
(prog1
nil
(message "Failed to find \"Content-ID: %s\"" url)))))
(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 (or (mail-content-type-get (mm-handle-type handle) 'charset)
mail-parse-charset)))
(save-excursion
(insert (if charset (mm-decode-string text charset) text))
(save-restriction
(narrow-to-region b (point))
(unless charset
(goto-char (point-min))
(when (setq charset (w3m-detect-meta-charset))
(delete-region (point-min) (point-max))
(insert (mm-decode-string text charset))))
(let ((w3m-safe-url-regexp mm-w3m-safe-url-regexp)
w3m-force-redisplay)
(w3m-region (point-min) (point-max) nil charset))
(when (and mm-inline-text-html-with-w3m-keymap
(boundp 'w3m-minor-mode-map)
w3m-minor-mode-map)
(add-text-properties
(point-min) (point-max)
(list 'keymap w3m-minor-mode-map
'mm-inline-text-html-with-w3m t)))
(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-standalone-supports-m17n-p (if (featurep 'mule) 'undecided)
"*T means the w3m command supports the m17n feature.")
(defun mm-w3m-standalone-supports-m17n-p ()
"Say whether the w3m command supports the m17n feature."
(cond ((eq mm-w3m-standalone-supports-m17n-p t) t)
((eq mm-w3m-standalone-supports-m17n-p nil) nil)
((not (featurep 'mule)) (setq mm-w3m-standalone-supports-m17n-p nil))
((condition-case nil
(let ((coding-system-for-write 'iso-2022-jp)
(coding-system-for-read 'iso-2022-jp)
(str (mm-decode-coding-string "\
\e$B#D#o#e#s!!#w#3#m!!#s#u#p#p#o#r#t#s!!#m#1#7#n!)\e(B" 'iso-2022-jp)))
(mm-with-multibyte-buffer
(insert str)
(call-process-region
(point-min) (point-max) "w3m" t t nil "-dump"
"-T" "text/html" "-I" "iso-2022-jp" "-O" "iso-2022-jp")
(goto-char (point-min))
(search-forward str nil t)))
(error nil))
(setq mm-w3m-standalone-supports-m17n-p t))
(t
(setq mm-w3m-standalone-supports-m17n-p nil))))
(defun mm-inline-text-html-render-with-w3m-standalone (handle)
"Render a text/html part using w3m."
(if (mm-w3m-standalone-supports-m17n-p)
(let ((source (mm-get-part handle))
(charset (or (mail-content-type-get (mm-handle-type handle)
'charset)
(symbol-name mail-parse-charset)))
cs)
(unless (and charset
(setq cs (mm-charset-to-coding-system charset))
(not (eq cs 'ascii)))
(setq charset "iso-8859-1"
cs 'iso-8859-1))
(mm-insert-inline
handle
(mm-with-unibyte-buffer
(insert source)
(mm-enable-multibyte)
(let ((coding-system-for-write 'binary)
(coding-system-for-read cs))
(call-process-region
(point-min) (point-max)
"w3m" t t nil "-dump" "-T" "text/html"
"-I" charset "-O" charset))
(buffer-string))))
(mm-inline-render-with-stdin handle nil "w3m" "-dump" "-T" "text/html")))
(defun mm-links-remove-leading-blank ()
(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 (mm-make-temp-file
(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))
(charset (or (mail-content-type-get (mm-handle-type handle) 'charset)
mail-parse-charset)))
(mm-insert-inline
handle
(mm-with-multibyte-buffer
(insert (if charset
(mm-decode-string source charset)
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
((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))))))))
(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)
(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 mm-fill-flowed
(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))
(when (or (equal type "enriched")
(equal type "richtext"))
(set-text-properties (point-min) (point-max) nil)
(ignore-errors
(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."
(let ((b (point)))
(insert text)
(mm-handle-set-undisplayer
handle
`(lambda ()
(let (buffer-read-only)
(delete-region ,(set-marker (make-marker) b)
,(set-marker (make-marker) (point))))))))
(defun mm-inline-audio (handle)
(message "Not implemented"))
(defun mm-view-sound-file ()
(message "Not implemented"))
(defun mm-w3-prepare-buffer ()
(require 'w3)
(let ((url-standalone-mode t)
(url-gateway-unplugged t)
(w3-honor-stylesheets nil))
(w3-prepare-buffer)))
(defun mm-view-message ()
(mm-enable-multibyte)
(let (handles)
(let (gnus-article-mime-handles)
(run-hooks 'gnus-article-decode-hook)
(gnus-article-prepare-display)
(setq handles gnus-article-mime-handles))
(when handles
(setq gnus-article-mime-handles
(mm-merge-handles gnus-article-mime-handles handles))))
(fundamental-mode)
(goto-char (point-min)))
(defun mm-inline-message (handle)
(let ((b (point))
(bolp (bolp))
(charset (mail-content-type-get
(mm-handle-type handle) 'charset))
gnus-displaying-mime handles)
(when (and charset
(stringp charset))
(setq charset (intern (downcase charset)))
(when (eq charset 'us-ascii)
(setq charset nil)))
(save-excursion
(save-restriction
(narrow-to-region b b)
(mm-insert-part handle)
(let (gnus-article-mime-handles
gnus-article-prepare-hook
(gnus-newsgroup-charset
(unless (eq charset 'gnus-decoded) (or charset gnus-newsgroup-charset))))
(let ((gnus-original-article-buffer (mm-handle-buffer handle)))
(run-hooks 'gnus-article-decode-hook))
(gnus-article-prepare-display)
(setq handles gnus-article-mime-handles))
(goto-char (point-min))
(unless bolp
(insert "\n"))
(goto-char (point-max))
(unless (bolp)
(insert "\n"))
(insert "----------\n\n")
(when handles
(setq gnus-article-mime-handles
(mm-merge-handles gnus-article-mime-handles handles)))
(mm-handle-set-undisplayer
handle
`(lambda ()
(let (buffer-read-only)
(if (fboundp '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-display-inline-fontify (handle mode)
(let (text)
(save-current-buffer
(set-buffer (generate-new-buffer "*fontification*"))
(unwind-protect
(progn
(buffer-disable-undo)
(mm-insert-part handle)
(require 'font-lock)
(let ((font-lock-maximum-size nil)
(font-lock-mode-hook nil)
(font-lock-support-mode nil)
(font-lock-verbose nil))
(funcall mode)
(unless (symbol-value 'font-lock-mode)
(font-lock-fontify-buffer)))
(when (fboundp 'extent-list)
(map-extents (lambda (ext ignored)
(set-extent-property ext 'duplicable t)
nil)
nil nil nil nil nil 'text-prop))
(setq text (buffer-string)))
(kill-buffer (current-buffer))))
(mm-insert-inline handle text)))
(defun mm-display-patch-inline (handle)
(mm-display-inline-fontify handle 'diff-mode))
(defun mm-display-elisp-inline (handle)
(mm-display-inline-fontify handle 'emacs-lisp-mode))
(defvar mm-pkcs7-signed-magic
(mm-string-as-unibyte
(apply 'concat
(mapcar 'char-to-string
(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)))))
(defvar mm-pkcs7-enveloped-magic
(mm-string-as-unibyte
(apply 'concat
(mapcar 'char-to-string
(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)
(mm-with-unibyte-buffer
(mm-insert-part handle)
(cond ((looking-at mm-pkcs7-enveloped-magic)
'enveloped)
((looking-at mm-pkcs7-signed-magic)
'signed)
(t
(error "Could not identify PKCS#7 type")))))
(defun mm-view-pkcs7 (handle)
(case (mm-view-pkcs7-get-type handle)
(enveloped (mm-view-pkcs7-decrypt handle))
(signed (mm-view-pkcs7-verify handle))
(otherwise (error "Unknown or unimplemented PKCS#7 type"))))
(defun mm-view-pkcs7-verify (handle)
(mm-insert-part handle)
(goto-char (point-min))
(if (search-forward "Content-Type: " nil t)
(delete-region (point-min) (match-beginning 0)))
(goto-char (point-max))
(if (re-search-backward "--\r?\n?" nil t)
(delete-region (match-end 0) (point-max)))
(goto-char (point-min))
(while (search-forward "\r\n" nil t)
(replace-match "\n"))
(message "Verify signed PKCS#7 message is unimplemented.")
(sit-for 1)
t)
(autoload 'gnus-completing-read-maybe-default "gnus-util" nil nil 'macro)
(defun mm-view-pkcs7-decrypt (handle)
(insert-buffer-substring (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
(gnus-completing-read-maybe-default
(concat "Decipher using key"
(if smime-keys
(concat " (default " (caar smime-keys) "): ")
": "))
smime-keys nil nil nil nil (car-safe (car-safe smime-keys))))))
(goto-char (point-min))
(while (search-forward "\r\n" nil t)
(replace-match "\n"))
(goto-char (point-min)))
(provide 'mm-view)