| 1 | ;;; mm-view.el --- functions for viewing MIME objects |
| 2 | |
| 3 | ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
| 4 | ;; 2005, 2006, 2007 Free Software Foundation, Inc. |
| 5 | |
| 6 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> |
| 7 | ;; This file is part of GNU Emacs. |
| 8 | |
| 9 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
| 10 | ;; it under the terms of the GNU General Public License as published by |
| 11 | ;; the Free Software Foundation; either version 3, or (at your option) |
| 12 | ;; any later version. |
| 13 | |
| 14 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | ;; GNU General Public License for more details. |
| 18 | |
| 19 | ;; You should have received a copy of the GNU General Public License |
| 20 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
| 21 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 22 | ;; Boston, MA 02110-1301, USA. |
| 23 | |
| 24 | ;;; Commentary: |
| 25 | |
| 26 | ;;; Code: |
| 27 | |
| 28 | (eval-when-compile (require 'cl)) |
| 29 | (require 'mail-parse) |
| 30 | (require 'mailcap) |
| 31 | (require 'mm-bodies) |
| 32 | (require 'mm-decode) |
| 33 | (require 'smime) |
| 34 | |
| 35 | (eval-and-compile |
| 36 | (autoload 'gnus-article-prepare-display "gnus-art") |
| 37 | (autoload 'vcard-parse-string "vcard") |
| 38 | (autoload 'vcard-format-string "vcard") |
| 39 | (autoload 'fill-flowed "flow-fill") |
| 40 | (autoload 'html2text "html2text" nil t)) |
| 41 | |
| 42 | (defvar gnus-article-mime-handles) |
| 43 | (defvar gnus-newsgroup-charset) |
| 44 | (defvar smime-keys) |
| 45 | (defvar w3m-cid-retrieve-function-alist) |
| 46 | (defvar w3m-current-buffer) |
| 47 | (defvar w3m-display-inline-images) |
| 48 | (defvar w3m-minor-mode-map) |
| 49 | |
| 50 | (defvar mm-text-html-renderer-alist |
| 51 | '((w3 . mm-inline-text-html-render-with-w3) |
| 52 | (w3m . mm-inline-text-html-render-with-w3m) |
| 53 | (w3m-standalone . mm-inline-text-html-render-with-w3m-standalone) |
| 54 | (links mm-inline-render-with-file |
| 55 | mm-links-remove-leading-blank |
| 56 | "links" "-dump" file) |
| 57 | (lynx mm-inline-render-with-stdin nil |
| 58 | "lynx" "-dump" "-force_html" "-stdin" "-nolist") |
| 59 | (html2text mm-inline-render-with-function html2text)) |
| 60 | "The attributes of renderer types for text/html.") |
| 61 | |
| 62 | (defvar mm-text-html-washer-alist |
| 63 | '((w3 . gnus-article-wash-html-with-w3) |
| 64 | (w3m . gnus-article-wash-html-with-w3m) |
| 65 | (w3m-standalone . gnus-article-wash-html-with-w3m-standalone) |
| 66 | (links mm-inline-wash-with-file |
| 67 | mm-links-remove-leading-blank |
| 68 | "links" "-dump" file) |
| 69 | (lynx mm-inline-wash-with-stdin nil |
| 70 | "lynx" "-dump" "-force_html" "-stdin" "-nolist") |
| 71 | (html2text html2text)) |
| 72 | "The attributes of washer types for text/html.") |
| 73 | |
| 74 | (defcustom mm-fill-flowed t |
| 75 | "If non-nil a format=flowed article will be displayed flowed." |
| 76 | :type 'boolean |
| 77 | :version "22.1" |
| 78 | :group 'mime-display) |
| 79 | |
| 80 | ;;; Internal variables. |
| 81 | |
| 82 | ;;; |
| 83 | ;;; Functions for displaying various formats inline |
| 84 | ;;; |
| 85 | |
| 86 | (defun mm-inline-image-emacs (handle) |
| 87 | (let ((b (point-marker)) |
| 88 | buffer-read-only) |
| 89 | (put-image (mm-get-image handle) b) |
| 90 | (insert "\n\n") |
| 91 | (mm-handle-set-undisplayer |
| 92 | handle |
| 93 | `(lambda () |
| 94 | (let ((b ,b) |
| 95 | buffer-read-only) |
| 96 | (remove-images b b) |
| 97 | (delete-region b (+ b 2))))))) |
| 98 | |
| 99 | (defun mm-inline-image-xemacs (handle) |
| 100 | (when (featurep 'xemacs) |
| 101 | (insert "\n\n") |
| 102 | (forward-char -2) |
| 103 | (let ((annot (make-annotation (mm-get-image handle) nil 'text)) |
| 104 | buffer-read-only) |
| 105 | (mm-handle-set-undisplayer |
| 106 | handle |
| 107 | `(lambda () |
| 108 | (let ((b ,(point-marker)) |
| 109 | buffer-read-only) |
| 110 | (delete-annotation ,annot) |
| 111 | (delete-region (- b 2) b)))) |
| 112 | (set-extent-property annot 'mm t) |
| 113 | (set-extent-property annot 'duplicable t)))) |
| 114 | |
| 115 | (eval-and-compile |
| 116 | (if (featurep 'xemacs) |
| 117 | (defalias 'mm-inline-image 'mm-inline-image-xemacs) |
| 118 | (defalias 'mm-inline-image 'mm-inline-image-emacs))) |
| 119 | |
| 120 | (defvar mm-w3-setup nil) |
| 121 | (defun mm-setup-w3 () |
| 122 | (unless mm-w3-setup |
| 123 | (require 'w3) |
| 124 | (w3-do-setup) |
| 125 | (require 'url) |
| 126 | (require 'w3-vars) |
| 127 | (require 'url-vars) |
| 128 | (setq mm-w3-setup t))) |
| 129 | |
| 130 | (defun mm-inline-text-html-render-with-w3 (handle) |
| 131 | (mm-setup-w3) |
| 132 | (let ((text (mm-get-part handle)) |
| 133 | (b (point)) |
| 134 | (url-standalone-mode t) |
| 135 | (url-gateway-unplugged t) |
| 136 | (w3-honor-stylesheets nil) |
| 137 | (url-current-object |
| 138 | (url-generic-parse-url (format "cid:%s" (mm-handle-id handle)))) |
| 139 | (width (window-width)) |
| 140 | (charset (mail-content-type-get |
| 141 | (mm-handle-type handle) 'charset))) |
| 142 | (save-excursion |
| 143 | (insert (if charset (mm-decode-string text charset) text)) |
| 144 | (save-restriction |
| 145 | (narrow-to-region b (point)) |
| 146 | (unless charset |
| 147 | (goto-char (point-min)) |
| 148 | (when (or (and (boundp 'w3-meta-content-type-charset-regexp) |
| 149 | (re-search-forward |
| 150 | w3-meta-content-type-charset-regexp nil t)) |
| 151 | (and (boundp 'w3-meta-charset-content-type-regexp) |
| 152 | (re-search-forward |
| 153 | w3-meta-charset-content-type-regexp nil t))) |
| 154 | (setq charset |
| 155 | (let ((bsubstr (buffer-substring-no-properties |
| 156 | (match-beginning 2) |
| 157 | (match-end 2)))) |
| 158 | (if (fboundp 'w3-coding-system-for-mime-charset) |
| 159 | (w3-coding-system-for-mime-charset bsubstr) |
| 160 | (mm-charset-to-coding-system bsubstr)))) |
| 161 | (delete-region (point-min) (point-max)) |
| 162 | (insert (mm-decode-string text charset)))) |
| 163 | (save-window-excursion |
| 164 | (save-restriction |
| 165 | (let ((w3-strict-width width) |
| 166 | ;; Don't let w3 set the global version of |
| 167 | ;; this variable. |
| 168 | (fill-column fill-column)) |
| 169 | (if (or debug-on-error debug-on-quit) |
| 170 | (w3-region (point-min) (point-max)) |
| 171 | (condition-case () |
| 172 | (w3-region (point-min) (point-max)) |
| 173 | (error |
| 174 | (delete-region (point-min) (point-max)) |
| 175 | (let ((b (point)) |
| 176 | (charset (mail-content-type-get |
| 177 | (mm-handle-type handle) 'charset))) |
| 178 | (if (or (eq charset 'gnus-decoded) |
| 179 | (eq mail-parse-charset 'gnus-decoded)) |
| 180 | (save-restriction |
| 181 | (narrow-to-region (point) (point)) |
| 182 | (mm-insert-part handle) |
| 183 | (goto-char (point-max))) |
| 184 | (insert (mm-decode-string (mm-get-part handle) |
| 185 | charset)))) |
| 186 | (message |
| 187 | "Error while rendering html; showing as text/plain"))))))) |
| 188 | (mm-handle-set-undisplayer |
| 189 | handle |
| 190 | `(lambda () |
| 191 | (let (buffer-read-only) |
| 192 | ,@(if (functionp 'remove-specifier) |
| 193 | '((mapcar (lambda (prop) |
| 194 | (remove-specifier |
| 195 | (face-property 'default prop) |
| 196 | (current-buffer))) |
| 197 | '(background background-pixmap foreground)))) |
| 198 | (delete-region ,(point-min-marker) |
| 199 | ,(point-max-marker))))))))) |
| 200 | |
| 201 | (defvar mm-w3m-setup nil |
| 202 | "Whether gnus-article-mode has been setup to use emacs-w3m.") |
| 203 | |
| 204 | (defun mm-setup-w3m () |
| 205 | "Setup gnus-article-mode to use emacs-w3m." |
| 206 | (unless mm-w3m-setup |
| 207 | (require 'w3m) |
| 208 | (unless (assq 'gnus-article-mode w3m-cid-retrieve-function-alist) |
| 209 | (push (cons 'gnus-article-mode 'mm-w3m-cid-retrieve) |
| 210 | w3m-cid-retrieve-function-alist)) |
| 211 | (setq mm-w3m-setup t)) |
| 212 | (setq w3m-display-inline-images mm-inline-text-html-with-images)) |
| 213 | |
| 214 | (defun mm-w3m-cid-retrieve-1 (url handle) |
| 215 | (dolist (elem handle) |
| 216 | (when (consp elem) |
| 217 | (when (equal url (mm-handle-id elem)) |
| 218 | (mm-insert-part elem) |
| 219 | (throw 'found-handle (mm-handle-media-type elem))) |
| 220 | (when (and (stringp (car elem)) |
| 221 | (equal "multipart" (mm-handle-media-supertype elem))) |
| 222 | (mm-w3m-cid-retrieve-1 url elem))))) |
| 223 | |
| 224 | (defun mm-w3m-cid-retrieve (url &rest args) |
| 225 | "Insert a content pointed by URL if it has the cid: scheme." |
| 226 | (when (string-match "\\`cid:" url) |
| 227 | (or (catch 'found-handle |
| 228 | (mm-w3m-cid-retrieve-1 |
| 229 | (setq url (concat "<" (substring url (match-end 0)) ">")) |
| 230 | (with-current-buffer w3m-current-buffer |
| 231 | gnus-article-mime-handles))) |
| 232 | (prog1 |
| 233 | nil |
| 234 | (message "Failed to find \"Content-ID: %s\"" url))))) |
| 235 | |
| 236 | (defun mm-inline-text-html-render-with-w3m (handle) |
| 237 | "Render a text/html part using emacs-w3m." |
| 238 | (mm-setup-w3m) |
| 239 | (let ((text (mm-get-part handle)) |
| 240 | (b (point)) |
| 241 | (charset (or (mail-content-type-get (mm-handle-type handle) 'charset) |
| 242 | mail-parse-charset))) |
| 243 | (save-excursion |
| 244 | (insert (if charset (mm-decode-string text charset) text)) |
| 245 | (save-restriction |
| 246 | (narrow-to-region b (point)) |
| 247 | (unless charset |
| 248 | (goto-char (point-min)) |
| 249 | (when (setq charset (w3m-detect-meta-charset)) |
| 250 | (delete-region (point-min) (point-max)) |
| 251 | (insert (mm-decode-string text charset)))) |
| 252 | (let ((w3m-safe-url-regexp mm-w3m-safe-url-regexp) |
| 253 | w3m-force-redisplay) |
| 254 | (w3m-region (point-min) (point-max) nil charset)) |
| 255 | (when (and mm-inline-text-html-with-w3m-keymap |
| 256 | (boundp 'w3m-minor-mode-map) |
| 257 | w3m-minor-mode-map) |
| 258 | (add-text-properties |
| 259 | (point-min) (point-max) |
| 260 | (list 'keymap w3m-minor-mode-map |
| 261 | ;; Put the mark meaning this part was rendered by emacs-w3m. |
| 262 | 'mm-inline-text-html-with-w3m t))) |
| 263 | (mm-handle-set-undisplayer |
| 264 | handle |
| 265 | `(lambda () |
| 266 | (let ((inhibit-read-only t)) |
| 267 | (delete-region ,(point-min-marker) |
| 268 | ,(point-max-marker))))))))) |
| 269 | |
| 270 | (defvar mm-w3m-standalone-supports-m17n-p (if (featurep 'mule) 'undecided) |
| 271 | "*T means the w3m command supports the m17n feature.") |
| 272 | |
| 273 | (defun mm-w3m-standalone-supports-m17n-p () |
| 274 | "Say whether the w3m command supports the m17n feature." |
| 275 | (cond ((eq mm-w3m-standalone-supports-m17n-p t) t) |
| 276 | ((eq mm-w3m-standalone-supports-m17n-p nil) nil) |
| 277 | ((not (featurep 'mule)) (setq mm-w3m-standalone-supports-m17n-p nil)) |
| 278 | ((condition-case nil |
| 279 | (let ((coding-system-for-write 'iso-2022-jp) |
| 280 | (coding-system-for-read 'iso-2022-jp) |
| 281 | (str (mm-decode-coding-string "\ |
| 282 | \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))) |
| 283 | (mm-with-multibyte-buffer |
| 284 | (insert str) |
| 285 | (call-process-region |
| 286 | (point-min) (point-max) "w3m" t t nil "-dump" |
| 287 | "-T" "text/html" "-I" "iso-2022-jp" "-O" "iso-2022-jp") |
| 288 | (goto-char (point-min)) |
| 289 | (search-forward str nil t))) |
| 290 | (error nil)) |
| 291 | (setq mm-w3m-standalone-supports-m17n-p t)) |
| 292 | (t |
| 293 | ;;(message "You had better upgrade your w3m command") |
| 294 | (setq mm-w3m-standalone-supports-m17n-p nil)))) |
| 295 | |
| 296 | (defun mm-inline-text-html-render-with-w3m-standalone (handle) |
| 297 | "Render a text/html part using w3m." |
| 298 | (if (mm-w3m-standalone-supports-m17n-p) |
| 299 | (let ((source (mm-get-part handle)) |
| 300 | (charset (or (mail-content-type-get (mm-handle-type handle) |
| 301 | 'charset) |
| 302 | (symbol-name mail-parse-charset))) |
| 303 | cs) |
| 304 | (unless (and charset |
| 305 | (setq cs (mm-charset-to-coding-system charset)) |
| 306 | (not (eq cs 'ascii))) |
| 307 | ;; The default. |
| 308 | (setq charset "iso-8859-1" |
| 309 | cs 'iso-8859-1)) |
| 310 | (mm-insert-inline |
| 311 | handle |
| 312 | (mm-with-unibyte-buffer |
| 313 | (insert source) |
| 314 | (mm-enable-multibyte) |
| 315 | (let ((coding-system-for-write 'binary) |
| 316 | (coding-system-for-read cs)) |
| 317 | (call-process-region |
| 318 | (point-min) (point-max) |
| 319 | "w3m" t t nil "-dump" "-T" "text/html" |
| 320 | "-I" charset "-O" charset)) |
| 321 | (buffer-string)))) |
| 322 | (mm-inline-render-with-stdin handle nil "w3m" "-dump" "-T" "text/html"))) |
| 323 | |
| 324 | (defun mm-links-remove-leading-blank () |
| 325 | ;; Delete the annoying three spaces preceding each line of links |
| 326 | ;; output. |
| 327 | (goto-char (point-min)) |
| 328 | (while (re-search-forward "^ " nil t) |
| 329 | (delete-region (match-beginning 0) (match-end 0)))) |
| 330 | |
| 331 | (defun mm-inline-wash-with-file (post-func cmd &rest args) |
| 332 | (let ((file (mm-make-temp-file |
| 333 | (expand-file-name "mm" mm-tmp-directory)))) |
| 334 | (let ((coding-system-for-write 'binary)) |
| 335 | (write-region (point-min) (point-max) file nil 'silent)) |
| 336 | (delete-region (point-min) (point-max)) |
| 337 | (unwind-protect |
| 338 | (apply 'call-process cmd nil t nil (mapcar 'eval args)) |
| 339 | (delete-file file)) |
| 340 | (and post-func (funcall post-func)))) |
| 341 | |
| 342 | (defun mm-inline-wash-with-stdin (post-func cmd &rest args) |
| 343 | (let ((coding-system-for-write 'binary)) |
| 344 | (apply 'call-process-region (point-min) (point-max) |
| 345 | cmd t t nil args)) |
| 346 | (and post-func (funcall post-func))) |
| 347 | |
| 348 | (defun mm-inline-render-with-file (handle post-func cmd &rest args) |
| 349 | (let ((source (mm-get-part handle))) |
| 350 | (mm-insert-inline |
| 351 | handle |
| 352 | (mm-with-unibyte-buffer |
| 353 | (insert source) |
| 354 | (apply 'mm-inline-wash-with-file post-func cmd args) |
| 355 | (buffer-string))))) |
| 356 | |
| 357 | (defun mm-inline-render-with-stdin (handle post-func cmd &rest args) |
| 358 | (let ((source (mm-get-part handle))) |
| 359 | (mm-insert-inline |
| 360 | handle |
| 361 | (mm-with-unibyte-buffer |
| 362 | (insert source) |
| 363 | (apply 'mm-inline-wash-with-stdin post-func cmd args) |
| 364 | (buffer-string))))) |
| 365 | |
| 366 | (defun mm-inline-render-with-function (handle func &rest args) |
| 367 | (let ((source (mm-get-part handle)) |
| 368 | (charset (or (mail-content-type-get (mm-handle-type handle) 'charset) |
| 369 | mail-parse-charset))) |
| 370 | (mm-insert-inline |
| 371 | handle |
| 372 | (mm-with-multibyte-buffer |
| 373 | (insert (if charset |
| 374 | (mm-decode-string source charset) |
| 375 | source)) |
| 376 | (apply func args) |
| 377 | (buffer-string))))) |
| 378 | |
| 379 | (defun mm-inline-text-html (handle) |
| 380 | (let* ((func (or mm-inline-text-html-renderer mm-text-html-renderer)) |
| 381 | (entry (assq func mm-text-html-renderer-alist)) |
| 382 | buffer-read-only) |
| 383 | (if entry |
| 384 | (setq func (cdr entry))) |
| 385 | (cond |
| 386 | ((functionp func) |
| 387 | (funcall func handle)) |
| 388 | (t |
| 389 | (apply (car func) handle (cdr func)))))) |
| 390 | |
| 391 | (defun mm-inline-text-vcard (handle) |
| 392 | (let (buffer-read-only) |
| 393 | (mm-insert-inline |
| 394 | handle |
| 395 | (concat "\n-- \n" |
| 396 | (ignore-errors |
| 397 | (if (fboundp 'vcard-pretty-print) |
| 398 | (vcard-pretty-print (mm-get-part handle)) |
| 399 | (vcard-format-string |
| 400 | (vcard-parse-string (mm-get-part handle) |
| 401 | 'vcard-standard-filter)))))))) |
| 402 | |
| 403 | (defun mm-inline-text (handle) |
| 404 | (let ((b (point)) |
| 405 | (type (mm-handle-media-subtype handle)) |
| 406 | (charset (mail-content-type-get |
| 407 | (mm-handle-type handle) 'charset)) |
| 408 | buffer-read-only) |
| 409 | (if (or (eq charset 'gnus-decoded) |
| 410 | ;; This is probably not entirely correct, but |
| 411 | ;; makes rfc822 parts with embedded multiparts work. |
| 412 | (eq mail-parse-charset 'gnus-decoded)) |
| 413 | (save-restriction |
| 414 | (narrow-to-region (point) (point)) |
| 415 | (mm-insert-part handle) |
| 416 | (goto-char (point-max))) |
| 417 | (insert (mm-decode-string (mm-get-part handle) charset))) |
| 418 | (when (and mm-fill-flowed |
| 419 | (equal type "plain") |
| 420 | (equal (cdr (assoc 'format (mm-handle-type handle))) |
| 421 | "flowed")) |
| 422 | (save-restriction |
| 423 | (narrow-to-region b (point)) |
| 424 | (goto-char b) |
| 425 | (fill-flowed nil (equal (cdr (assoc 'delsp (mm-handle-type handle))) |
| 426 | "yes")) |
| 427 | (goto-char (point-max)))) |
| 428 | (save-restriction |
| 429 | (narrow-to-region b (point)) |
| 430 | (when (or (equal type "enriched") |
| 431 | (equal type "richtext")) |
| 432 | (set-text-properties (point-min) (point-max) nil) |
| 433 | (ignore-errors |
| 434 | (enriched-decode (point-min) (point-max)))) |
| 435 | (mm-handle-set-undisplayer |
| 436 | handle |
| 437 | `(lambda () |
| 438 | (let (buffer-read-only) |
| 439 | (delete-region ,(point-min-marker) |
| 440 | ,(point-max-marker)))))))) |
| 441 | |
| 442 | (defun mm-insert-inline (handle text) |
| 443 | "Insert TEXT inline from HANDLE." |
| 444 | (let ((b (point))) |
| 445 | (insert text) |
| 446 | (unless (bolp) |
| 447 | (insert "\n")) |
| 448 | (mm-handle-set-undisplayer |
| 449 | handle |
| 450 | `(lambda () |
| 451 | (let (buffer-read-only) |
| 452 | (delete-region ,(set-marker (make-marker) b) |
| 453 | ,(set-marker (make-marker) (point)))))))) |
| 454 | |
| 455 | (defun mm-inline-audio (handle) |
| 456 | (message "Not implemented")) |
| 457 | |
| 458 | (defun mm-view-sound-file () |
| 459 | (message "Not implemented")) |
| 460 | |
| 461 | (defun mm-w3-prepare-buffer () |
| 462 | (require 'w3) |
| 463 | (let ((url-standalone-mode t) |
| 464 | (url-gateway-unplugged t) |
| 465 | (w3-honor-stylesheets nil)) |
| 466 | (w3-prepare-buffer))) |
| 467 | |
| 468 | (defun mm-view-message () |
| 469 | (mm-enable-multibyte) |
| 470 | (let (handles) |
| 471 | (let (gnus-article-mime-handles) |
| 472 | ;; Double decode problem may happen. See mm-inline-message. |
| 473 | (run-hooks 'gnus-article-decode-hook) |
| 474 | (gnus-article-prepare-display) |
| 475 | (setq handles gnus-article-mime-handles)) |
| 476 | (when handles |
| 477 | (setq gnus-article-mime-handles |
| 478 | (mm-merge-handles gnus-article-mime-handles handles)))) |
| 479 | (fundamental-mode) |
| 480 | (goto-char (point-min))) |
| 481 | |
| 482 | (defun mm-inline-message (handle) |
| 483 | (let ((b (point)) |
| 484 | (bolp (bolp)) |
| 485 | (charset (mail-content-type-get |
| 486 | (mm-handle-type handle) 'charset)) |
| 487 | gnus-displaying-mime handles) |
| 488 | (when (and charset |
| 489 | (stringp charset)) |
| 490 | (setq charset (intern (downcase charset))) |
| 491 | (when (eq charset 'us-ascii) |
| 492 | (setq charset nil))) |
| 493 | (save-excursion |
| 494 | (save-restriction |
| 495 | (narrow-to-region b b) |
| 496 | (mm-insert-part handle) |
| 497 | (let (gnus-article-mime-handles |
| 498 | ;; disable prepare hook |
| 499 | gnus-article-prepare-hook |
| 500 | (gnus-newsgroup-charset |
| 501 | (unless (eq charset 'gnus-decoded) ;; mm-uu might set it. |
| 502 | (or charset gnus-newsgroup-charset)))) |
| 503 | (let ((gnus-original-article-buffer (mm-handle-buffer handle))) |
| 504 | (run-hooks 'gnus-article-decode-hook)) |
| 505 | (gnus-article-prepare-display) |
| 506 | (setq handles gnus-article-mime-handles)) |
| 507 | (goto-char (point-min)) |
| 508 | (unless bolp |
| 509 | (insert "\n")) |
| 510 | (goto-char (point-max)) |
| 511 | (unless (bolp) |
| 512 | (insert "\n")) |
| 513 | (insert "----------\n\n") |
| 514 | (when handles |
| 515 | (setq gnus-article-mime-handles |
| 516 | (mm-merge-handles gnus-article-mime-handles handles))) |
| 517 | (mm-handle-set-undisplayer |
| 518 | handle |
| 519 | `(lambda () |
| 520 | (let (buffer-read-only) |
| 521 | (if (fboundp 'remove-specifier) |
| 522 | ;; This is only valid on XEmacs. |
| 523 | (mapcar (lambda (prop) |
| 524 | (remove-specifier |
| 525 | (face-property 'default prop) (current-buffer))) |
| 526 | '(background background-pixmap foreground))) |
| 527 | (delete-region ,(point-min-marker) ,(point-max-marker))))))))) |
| 528 | |
| 529 | (defun mm-display-inline-fontify (handle mode) |
| 530 | (let ((charset (mail-content-type-get (mm-handle-type handle) 'charset)) |
| 531 | text coding-system) |
| 532 | (unless (eq charset 'gnus-decoded) |
| 533 | (mm-with-unibyte-buffer |
| 534 | (mm-insert-part handle) |
| 535 | (mm-decompress-buffer |
| 536 | (or (mail-content-type-get (mm-handle-disposition handle) 'name) |
| 537 | (mail-content-type-get (mm-handle-disposition handle) 'filename)) |
| 538 | t t) |
| 539 | (unless charset |
| 540 | (setq coding-system (mm-find-buffer-file-coding-system))) |
| 541 | (setq text (buffer-string)))) |
| 542 | ;; XEmacs @#$@ version of font-lock refuses to fully turn itself |
| 543 | ;; on for buffers whose name begins with " ". That's why we use |
| 544 | ;; `with-current-buffer'/`generate-new-buffer' rather than |
| 545 | ;; `with-temp-buffer'. |
| 546 | (with-current-buffer (generate-new-buffer "*fontification*") |
| 547 | (buffer-disable-undo) |
| 548 | (mm-enable-multibyte) |
| 549 | (insert (cond ((eq charset 'gnus-decoded) |
| 550 | (with-current-buffer (mm-handle-buffer handle) |
| 551 | (buffer-string))) |
| 552 | (coding-system |
| 553 | (mm-decode-coding-string text coding-system)) |
| 554 | (charset |
| 555 | (mm-decode-string text charset)) |
| 556 | (t |
| 557 | text))) |
| 558 | (require 'font-lock) |
| 559 | (let ((font-lock-maximum-size nil) |
| 560 | ;; Disable support modes, e.g., jit-lock, lazy-lock, etc. |
| 561 | (font-lock-mode-hook nil) |
| 562 | (font-lock-support-mode nil) |
| 563 | ;; I find font-lock a bit too verbose. |
| 564 | (font-lock-verbose nil)) |
| 565 | (funcall mode) |
| 566 | ;; The mode function might have already turned on font-lock. |
| 567 | (unless (symbol-value 'font-lock-mode) |
| 568 | (font-lock-fontify-buffer))) |
| 569 | ;; By default, XEmacs font-lock uses non-duplicable text |
| 570 | ;; properties. This code forces all the text properties |
| 571 | ;; to be copied along with the text. |
| 572 | (when (featurep 'xemacs) |
| 573 | (map-extents (lambda (ext ignored) |
| 574 | (set-extent-property ext 'duplicable t) |
| 575 | nil) |
| 576 | nil nil nil nil nil 'text-prop)) |
| 577 | (setq text (buffer-string)) |
| 578 | (kill-buffer (current-buffer))) |
| 579 | (mm-insert-inline handle text))) |
| 580 | |
| 581 | ;; Shouldn't these functions check whether the user even wants to use |
| 582 | ;; font-lock? At least under XEmacs, this fontification is pretty |
| 583 | ;; much unconditional. Also, it would be nice to change for the size |
| 584 | ;; of the fontified region. |
| 585 | |
| 586 | (defun mm-display-patch-inline (handle) |
| 587 | (mm-display-inline-fontify handle 'diff-mode)) |
| 588 | |
| 589 | (defun mm-display-elisp-inline (handle) |
| 590 | (mm-display-inline-fontify handle 'emacs-lisp-mode)) |
| 591 | |
| 592 | (defun mm-display-dns-inline (handle) |
| 593 | (mm-display-inline-fontify handle 'dns-mode)) |
| 594 | |
| 595 | ;; id-signedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) |
| 596 | ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 2 } |
| 597 | (defvar mm-pkcs7-signed-magic |
| 598 | (mm-string-as-unibyte |
| 599 | (mapconcat 'char-to-string |
| 600 | (list ?\x30 ?\x5c ?\x28 ?\x80 ?\x5c ?\x7c ?\x81 ?\x2e ?\x5c |
| 601 | ?\x7c ?\x82 ?\x2e ?\x2e ?\x5c ?\x7c ?\x83 ?\x2e ?\x2e |
| 602 | ?\x2e ?\x5c ?\x29 ?\x06 ?\x09 ?\x5c ?\x2a ?\x86 ?\x48 |
| 603 | ?\x86 ?\xf7 ?\x0d ?\x01 ?\x07 ?\x02) ""))) |
| 604 | |
| 605 | ;; id-envelopedData OBJECT IDENTIFIER ::= { iso(1) member-body(2) |
| 606 | ;; us(840) rsadsi(113549) pkcs(1) pkcs7(7) 3 } |
| 607 | (defvar mm-pkcs7-enveloped-magic |
| 608 | (mm-string-as-unibyte |
| 609 | (mapconcat 'char-to-string |
| 610 | (list ?\x30 ?\x5c ?\x28 ?\x80 ?\x5c ?\x7c ?\x81 ?\x2e ?\x5c |
| 611 | ?\x7c ?\x82 ?\x2e ?\x2e ?\x5c ?\x7c ?\x83 ?\x2e ?\x2e |
| 612 | ?\x2e ?\x5c ?\x29 ?\x06 ?\x09 ?\x5c ?\x2a ?\x86 ?\x48 |
| 613 | ?\x86 ?\xf7 ?\x0d ?\x01 ?\x07 ?\x03) ""))) |
| 614 | |
| 615 | (defun mm-view-pkcs7-get-type (handle) |
| 616 | (mm-with-unibyte-buffer |
| 617 | (mm-insert-part handle) |
| 618 | (cond ((looking-at mm-pkcs7-enveloped-magic) |
| 619 | 'enveloped) |
| 620 | ((looking-at mm-pkcs7-signed-magic) |
| 621 | 'signed) |
| 622 | (t |
| 623 | (error "Could not identify PKCS#7 type"))))) |
| 624 | |
| 625 | (defun mm-view-pkcs7 (handle) |
| 626 | (case (mm-view-pkcs7-get-type handle) |
| 627 | (enveloped (mm-view-pkcs7-decrypt handle)) |
| 628 | (signed (mm-view-pkcs7-verify handle)) |
| 629 | (otherwise (error "Unknown or unimplemented PKCS#7 type")))) |
| 630 | |
| 631 | (defun mm-view-pkcs7-verify (handle) |
| 632 | (let ((verified nil)) |
| 633 | (with-temp-buffer |
| 634 | (insert "MIME-Version: 1.0\n") |
| 635 | (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m") |
| 636 | (insert-buffer-substring (mm-handle-buffer handle)) |
| 637 | (setq verified (smime-verify-region (point-min) (point-max)))) |
| 638 | (goto-char (point-min)) |
| 639 | (mm-insert-part handle) |
| 640 | (if (search-forward "Content-Type: " nil t) |
| 641 | (delete-region (point-min) (match-beginning 0))) |
| 642 | (goto-char (point-max)) |
| 643 | (if (re-search-backward "--\r?\n?" nil t) |
| 644 | (delete-region (match-end 0) (point-max))) |
| 645 | (unless verified |
| 646 | (insert-buffer-substring smime-details-buffer))) |
| 647 | (goto-char (point-min)) |
| 648 | (while (search-forward "\r\n" nil t) |
| 649 | (replace-match "\n")) |
| 650 | t) |
| 651 | |
| 652 | (defun mm-view-pkcs7-decrypt (handle) |
| 653 | (insert-buffer-substring (mm-handle-buffer handle)) |
| 654 | (goto-char (point-min)) |
| 655 | (insert "MIME-Version: 1.0\n") |
| 656 | (mm-insert-headers "application/pkcs7-mime" "base64" "smime.p7m") |
| 657 | (smime-decrypt-region |
| 658 | (point-min) (point-max) |
| 659 | (if (= (length smime-keys) 1) |
| 660 | (cadar smime-keys) |
| 661 | (smime-get-key-by-email |
| 662 | (completing-read |
| 663 | (concat "Decipher using key" |
| 664 | (if smime-keys (concat "(default " (caar smime-keys) "): ") |
| 665 | ": ")) |
| 666 | smime-keys nil nil nil nil (car-safe (car-safe smime-keys)))))) |
| 667 | (goto-char (point-min)) |
| 668 | (while (search-forward "\r\n" nil t) |
| 669 | (replace-match "\n")) |
| 670 | (goto-char (point-min))) |
| 671 | |
| 672 | (provide 'mm-view) |
| 673 | |
| 674 | ;;; arch-tag: b60e749a-d05c-47f2-bccd-bdaa59327cb2 |
| 675 | ;;; mm-view.el ends here |