;;; mm-decode.el --- Functions for decoding MIME things
-;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002,
+;; 2003 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
(require 'mail-parse)
(require 'mailcap)
(require 'mm-bodies)
-(eval-when-compile (require 'cl))
+(eval-when-compile (require 'cl)
+ (require 'term))
(eval-and-compile
+ (autoload 'executable-find "executable")
(autoload 'mm-inline-partial "mm-partial")
- (autoload 'mm-inline-external-body "mm-extern"))
+ (autoload 'mm-inline-external-body "mm-extern")
+ (autoload 'mm-insert-inline "mm-view"))
+
+(add-hook 'gnus-exit-gnus-hook 'mm-destroy-postponed-undisplay-list)
(defgroup mime-display ()
"Display of MIME in mail and news articles."
:link '(custom-manual "(emacs-mime)Customization")
+ :version "21.1"
:group 'mail
:group 'news
:group 'multimedia)
`(nth 7 ,handle))
(defmacro mm-handle-multipart-original-buffer (handle)
`(get-text-property 0 'buffer (car ,handle)))
+(defmacro mm-handle-multipart-from (handle)
+ `(get-text-property 0 'from (car ,handle)))
(defmacro mm-handle-multipart-ctl-parameter (handle parameter)
`(get-text-property 0 ,parameter (car ,handle)))
`(list ,buffer ,type ,encoding ,undisplayer
,disposition ,description ,cache ,id))
+(defcustom mm-text-html-renderer
+ (cond ((locate-library "w3") 'w3)
+ ((locate-library "w3m") 'w3m)
+ ((executable-find "links") 'links)
+ ((executable-find "lynx") 'lynx)
+ (t 'html2text))
+ "Render of HTML contents.
+It is one of defined renderer types, or a rendering function.
+The defined renderer types are:
+`w3' : using Emacs/W3;
+`w3m' : using emacs-w3m;
+`links': using links;
+`lynx' : using lynx;
+`html2text' : using html2text;
+nil : using external viewer."
+ :type '(choice (const w3)
+ (const w3m)
+ (const links)
+ (const lynx)
+ (const html2text)
+ (const nil)
+ (function))
+ :version "21.3"
+ :group 'mime-display)
+
+(defvar mm-inline-text-html-renderer nil
+ "Function used for rendering inline HTML contents.
+It is suggested to customize `mm-text-html-renderer' instead.")
+
+(defcustom mm-inline-text-html-with-images nil
+ "If non-nil, Gnus will allow retrieving images in the HTML contents
+with <img> tags. It has no effect on Emacs/w3. See also
+the documentation for the option `mm-w3m-safe-url-regexp'."
+ :type 'boolean
+ :group 'mime-display)
+
+(defcustom mm-w3m-safe-url-regexp "\\`cid:"
+ "Regexp that matches safe url names. Some HTML mails might have a
+trick of spammers using <img> tags. It is likely to be intended to
+verify whether you have read the mail. You can prevent your personal
+informations from leaking by setting this to the regexp which matches
+the safe url names. The value of the variable `w3m-safe-url-regexp'
+will be bound with this value. You may set this value to nil if you
+consider all the urls to be safe."
+ :type '(choice (regexp :tag "Regexp")
+ (const :tag "All URLs are safe" nil))
+ :group 'mime-display)
+
+(defcustom mm-inline-text-html-with-w3m-keymap t
+ "If non-nil, use emacs-w3m command keys in the article buffer."
+ :type 'boolean
+ :group 'mime-display)
+
(defcustom mm-inline-media-tests
'(("image/jpeg"
mm-inline-image
mm-inline-image
(lambda (handle)
(mm-valid-and-fit-image-p 'xpm handle)))
- ("image/x-pixmap"
+ ("image/x-xpixmap"
mm-inline-image
(lambda (handle)
(mm-valid-and-fit-image-p 'xpm handle)))
mm-inline-image
(lambda (handle)
(mm-valid-and-fit-image-p 'bmp handle)))
+ ("image/x-portable-bitmap"
+ mm-inline-image
+ (lambda (handle)
+ (mm-valid-and-fit-image-p 'pbm handle)))
("text/plain" mm-inline-text identity)
("text/enriched" mm-inline-text identity)
("text/richtext" mm-inline-text identity)
(lambda (handle)
(locate-library "diff-mode")))
("application/emacs-lisp" mm-display-elisp-inline identity)
+ ("application/x-emacs-lisp" mm-display-elisp-inline identity)
("text/html"
- mm-inline-text
+ mm-inline-text-html
(lambda (handle)
- (locate-library "w3")))
+ (or mm-inline-text-html-renderer
+ mm-text-html-renderer)))
("text/x-vcard"
- mm-inline-text
+ mm-inline-text-vcard
(lambda (handle)
(or (featurep 'vcard)
(locate-library "vcard"))))
("application/pgp-signature" ignore identity)
("application/x-pkcs7-signature" ignore identity)
("application/pkcs7-signature" ignore identity)
+ ("application/x-pkcs7-mime" ignore identity)
+ ("application/pkcs7-mime" ignore identity)
("multipart/alternative" ignore identity)
("multipart/mixed" ignore identity)
- ("multipart/related" ignore identity))
+ ("multipart/related" ignore identity)
+ ;; Disable audio and image
+ ("audio/.*" ignore ignore)
+ ("image/.*" ignore ignore)
+ ;; Default to displaying as text
+ (".*" mm-inline-text mm-readable-p))
"Alist of media types/tests saying whether types can be displayed inline."
:type '(repeat (list (string :tag "MIME type")
(function :tag "Display function")
(defcustom mm-inlined-types
'("image/.*" "text/.*" "message/delivery-status" "message/rfc822"
"message/partial" "message/external-body" "application/emacs-lisp"
+ "application/x-emacs-lisp"
"application/pgp-signature" "application/x-pkcs7-signature"
- "application/pkcs7-signature")
- "List of media types that are to be displayed inline."
+ "application/pkcs7-signature" "application/x-pkcs7-mime"
+ "application/pkcs7-mime")
+ "List of media types that are to be displayed inline.
+See also `mm-inline-media-tests', which says how to display a media
+type inline."
+ :type '(repeat string)
+ :group 'mime-display)
+
+(defcustom mm-keep-viewer-alive-types
+ '("application/postscript" "application/msword" "application/vnd.ms-excel"
+ "application/pdf" "application/x-dvi")
+ "List of media types for which the external viewer will not be killed
+when selecting a different article."
:type '(repeat string)
:group 'mime-display)
-
+
(defcustom mm-automatic-display
'("text/plain" "text/enriched" "text/richtext" "text/html"
"text/x-vcard" "image/.*" "message/delivery-status" "multipart/.*"
"message/rfc822" "text/x-patch" "application/pgp-signature"
- "application/emacs-lisp" "application/x-pkcs7-signature"
- "application/pkcs7-signature")
+ "application/emacs-lisp" "application/x-emacs-lisp"
+ "application/x-pkcs7-signature"
+ "application/pkcs7-signature" "application/x-pkcs7-mime"
+ "application/pkcs7-mime")
"A list of MIME types to be displayed automatically."
:type '(repeat string)
:group 'mime-display)
-(defcustom mm-attachment-override-types '("text/x-vcard")
+(defcustom mm-attachment-override-types '("text/x-vcard"
+ "application/pkcs7-mime"
+ "application/x-pkcs7-mime"
+ "application/pkcs7-signature"
+ "application/x-pkcs7-signature")
"Types to have \"attachment\" ignored if they can be displayed inline."
:type '(repeat string)
:group 'mime-display)
:type '(repeat string)
:group 'mime-display)
-(defvar mm-tmp-directory
- (cond ((fboundp 'temp-directory) (temp-directory))
- ((boundp 'temporary-file-directory) temporary-file-directory)
- ("/tmp/"))
- "Where mm will store its temporary files.")
+(defcustom mm-tmp-directory
+ (if (fboundp 'temp-directory)
+ (temp-directory)
+ (if (boundp 'temporary-file-directory)
+ temporary-file-directory
+ "/tmp/"))
+ "Where mm will store its temporary files."
+ :type 'directory
+ :group 'mime-display)
(defcustom mm-inline-large-images nil
"If non-nil, then all images fit in the buffer."
:type 'boolean
:group 'mime-display)
+(defvar mm-file-name-rewrite-functions nil
+ "*List of functions used for rewriting file names of MIME parts.
+Each function takes a file name as input and returns a file name.
+
+Ready-made functions include
+`mm-file-name-delete-whitespace',
+`mm-file-name-trim-whitespace',
+`mm-file-name-collapse-whitespace',
+`mm-file-name-replace-whitespace',
+`capitalize', `downcase', `upcase', and
+`upcase-initials'.")
+
+(defvar mm-path-name-rewrite-functions nil
+ "*List of functions for rewriting the full file names of MIME parts.
+This is used when viewing parts externally, and is meant for
+transforming the absolute name so that non-compliant programs can find
+the file where it's saved.
+
+Each function takes a file name as input and returns a file name.")
+
+(defvar mm-file-name-replace-whitespace nil
+ "String used for replacing whitespace characters; default is `\"_\"'.")
+
+(defcustom mm-default-directory nil
+ "The default directory where mm will save files.
+If not set, `default-directory' will be used."
+ :type '(choice directory (const :tag "Default" nil))
+ :group 'mime-display)
+
+(defcustom mm-external-terminal-program "xterm"
+ "The program to start an external terminal."
+ :type 'string
+ :group 'mime-display)
+
;;; Internal variables.
-(defvar mm-dissection-list nil)
(defvar mm-last-shell-command "")
(defvar mm-content-id-alist nil)
+(defvar mm-postponed-undisplay-list nil)
;; According to RFC2046, in particular, in a digest, the default
;; Content-Type value for a body part is changed from "text/plain" to
(autoload 'mml2015-verify "mml2015")
(autoload 'mml2015-verify-test "mml2015")
(autoload 'mml-smime-verify "mml-smime")
+(autoload 'mml-smime-verify-test "mml-smime")
(defvar mm-verify-function-alist
'(("application/pgp-signature" mml2015-verify "PGP" mml2015-verify-test)
- ("application/pkcs7-signature" mml-smime-verify "S/MIME" nil)
- ("application/x-pkcs7-signature" mml-smime-verify "S/MIME" nil)))
-
-(defcustom mm-verify-option 'known
+ ("application/x-gnus-pgp-signature" mm-uu-pgp-signed-extract-1 "PGP"
+ mm-uu-pgp-signed-test)
+ ("application/pkcs7-signature" mml-smime-verify "S/MIME"
+ mml-smime-verify-test)
+ ("application/x-pkcs7-signature" mml-smime-verify "S/MIME"
+ mml-smime-verify-test)))
+
+(defcustom mm-verify-option 'never
"Option of verifying signed parts.
-`never', not verify; `always', always verify;
+`never', not verify; `always', always verify;
`known', only verify known protocols. Otherwise, ask user."
:type '(choice (item always)
(item never)
(autoload 'mml2015-decrypt-test "mml2015")
(defvar mm-decrypt-function-alist
- '(("application/pgp-encrypted" mml2015-decrypt "PGP" mml2015-decrypt-test)))
+ '(("application/pgp-encrypted" mml2015-decrypt "PGP" mml2015-decrypt-test)
+ ("application/x-gnus-pgp-encrypted" mm-uu-pgp-encrypted-extract-1 "PGP"
+ mm-uu-pgp-encrypted-test)))
-(defcustom mm-decrypt-option 'known
- "Option of decrypting signed parts.
-`never', not decrypt; `always', always decrypt;
+(defcustom mm-decrypt-option nil
+ "Option of decrypting encrypted parts.
+`never', not decrypt; `always', always decrypt;
`known', only decrypt known protocols. Otherwise, ask user."
:type '(choice (item always)
(item never)
"Keymap for input viewer with completion.")
;; Should we bind other key to minibuffer-complete-word?
-(define-key mm-viewer-completion-map " " 'self-insert-command)
+(define-key mm-viewer-completion-map " " 'self-insert-command)
+
+(defvar mm-viewer-completion-map
+ (let ((map (make-sparse-keymap 'mm-viewer-completion-map)))
+ (set-keymap-parent map minibuffer-local-completion-map)
+ map)
+ "Keymap for input viewer with completion.")
+
+;; Should we bind other key to minibuffer-complete-word?
+(define-key mm-viewer-completion-map " " 'self-insert-command)
;;; The functions.
(setq alist (cdr alist)))
(nreverse plist)))
-(defun mm-dissect-buffer (&optional no-strict-mime)
+(defun mm-keep-viewer-alive-p (handle)
+ "Say whether external viewer for HANDLE should stay alive."
+ (let ((types mm-keep-viewer-alive-types)
+ (type (mm-handle-media-type handle))
+ ty)
+ (catch 'found
+ (while (setq ty (pop types))
+ (when (string-match ty type)
+ (throw 'found t))))))
+
+(defun mm-handle-set-external-undisplayer (handle function)
+ "Set the undisplayer for this handle; postpone undisplaying of viewers
+for types in mm-keep-viewer-alive-types."
+ (if (mm-keep-viewer-alive-p handle)
+ (let ((new-handle (copy-sequence handle)))
+ (mm-handle-set-undisplayer new-handle function)
+ (mm-handle-set-undisplayer handle nil)
+ (push new-handle mm-postponed-undisplay-list))
+ (mm-handle-set-undisplayer handle function)))
+
+(defun mm-destroy-postponed-undisplay-list ()
+ (when mm-postponed-undisplay-list
+ (message "Destroying external MIME viewers")
+ (mm-destroy-parts mm-postponed-undisplay-list)))
+
+(defun mm-dissect-buffer (&optional no-strict-mime loose-mime)
"Dissect the current buffer and return a list of MIME handles."
(save-excursion
- (let (ct ctl type subtype cte cd description id result)
+ (let (ct ctl type subtype cte cd description id result from)
(save-restriction
(mail-narrow-to-head)
(when (or no-strict-mime
+ loose-mime
(mail-fetch-field "mime-version"))
(setq ct (mail-fetch-field "content-type")
ctl (ignore-errors (mail-header-parse-content-type ct))
cte (mail-fetch-field "content-transfer-encoding")
cd (mail-fetch-field "content-disposition")
description (mail-fetch-field "content-description")
- id (mail-fetch-field "content-id"))))
+ from (mail-fetch-field "from")
+ id (mail-fetch-field "content-id"))
+ ;; FIXME: In some circumstances, this code is running within
+ ;; an unibyte macro. mail-extract-address-components
+ ;; creates unibyte buffers. This `if', though not a perfect
+ ;; solution, avoids most of them.
+ (if from
+ (setq from (cadr (mail-extract-address-components from))))))
(when cte
(setq cte (mail-header-strip cte)))
(if (or (not ctl)
(let ((mm-dissect-default-type (if (equal subtype "digest")
"message/rfc822"
"text/plain")))
- (add-text-properties 0 (length (car ctl))
- (mm-alist-to-plist (cdr ctl)) (car ctl))
+ (add-text-properties 0 (length (car ctl))
+ (mm-alist-to-plist (cdr ctl)) (car ctl))
;; what really needs to be done here is a way to link a
;; MIME handle back to it's parent MIME handle (in a multilevel
;; MIME article). That would probably require changing
;; the mm-handle API so we simply store the multipart buffert
;; name as a text property of the "multipart/whatever" string.
- (add-text-properties 0 (length (car ctl))
+ (add-text-properties 0 (length (car ctl))
(list 'buffer (mm-copy-to-buffer))
- (car ctl))
+ (car ctl))
+ (add-text-properties 0 (length (car ctl))
+ (list 'from from)
+ (car ctl))
(cons (car ctl) (mm-dissect-multipart ctl))))
(t
- (mm-dissect-singlepart
- ctl
- (and cte (intern (downcase (mail-header-remove-whitespace
- (mail-header-remove-comments
- cte)))))
- no-strict-mime
- (and cd (ignore-errors (mail-header-parse-content-disposition cd)))
- description id))))
+ (mm-possibly-verify-or-decrypt
+ (mm-dissect-singlepart
+ ctl
+ (and cte (intern (downcase (mail-header-remove-whitespace
+ (mail-header-remove-comments
+ cte)))))
+ no-strict-mime
+ (and cd (ignore-errors
+ (mail-header-parse-content-disposition cd)))
+ description id)
+ ctl))))
(when id
(when (string-match " *<\\(.*\\)> *" id)
(setq id (match-string 1 id)))
(if (equal "text/plain" (car ctl))
(assoc 'format ctl)
t))
- (let ((res (mm-make-handle
- (mm-copy-to-buffer) ctl cte nil cdl description nil id)))
- (push (car res) mm-dissection-list)
- res)))
-
-(defun mm-remove-all-parts ()
- "Remove all MIME handles."
- (interactive)
- (mapcar 'mm-remove-part mm-dissection-list)
- (setq mm-dissection-list nil))
+ (mm-make-handle
+ (mm-copy-to-buffer) ctl cte nil cdl description nil id)))
(defun mm-dissect-multipart (ctl)
(goto-char (point-min))
(match-beginning 0)
(point-max)))))
(setq boundary (concat (regexp-quote boundary) "[ \t]*$"))
- (while (re-search-forward boundary end t)
+ (while (and (< (point) end) (re-search-forward boundary end t))
(goto-char (match-beginning 0))
(when start
(save-excursion
(save-restriction
(narrow-to-region start (point))
(setq parts (nconc (list (mm-dissect-buffer t)) parts)))))
- (forward-line 2)
+ (end-of-line 2)
+ (or (looking-at boundary)
+ (forward-line 1))
(setq start (point)))
- (when start
+ (when (and start (< start end))
(save-excursion
(save-restriction
(narrow-to-region start end)
(insert-buffer-substring obuf beg)
(current-buffer))))
+(defun mm-display-parts (handle &optional no-default)
+ (if (stringp (car handle))
+ (mapcar 'mm-display-parts (cdr handle))
+ (if (bufferp (car handle))
+ (save-restriction
+ (narrow-to-region (point) (point))
+ (mm-display-part handle)
+ (goto-char (point-max)))
+ (mapcar 'mm-display-parts handle))))
+
(defun mm-display-part (handle &optional no-default)
"Display the MIME part represented by HANDLE.
Returns nil if the part is removed; inline if displayed inline;
projects / gnus / blobdiff