HCoop / bpt / emacs.git / blame
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|---|---|---|
| 23f87bed | 1 | ;;; mm-decode.el --- Functions for decoding MIME things |
| e84b4b86 TTN |
2 | |
| 3 | ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
| d7a0267c | 4 | ;; 2005, 2006, 2007 Free Software Foundation, Inc. |
| c113de23 GM |
5 | |
| 6 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> | |
| 7 | ;; MORIOKA Tomohiko <morioka@jaist.ac.jp> | |
| 8 | ;; This file is part of GNU Emacs. | |
| 9 | ||
| 10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 11 | ;; it under the terms of the GNU General Public License as published by | |
| 5a9dffec | 12 | ;; the Free Software Foundation; either version 3, or (at your option) |
| c113de23 GM |
13 | ;; any later version. |
| 14 | ||
| 15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | ;; GNU General Public License for more details. | |
| 19 | ||
| 20 | ;; You should have received a copy of the GNU General Public License | |
| 21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
| 3a35cf56 LK |
22 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 23 | ;; Boston, MA 02110-1301, USA. | |
| c113de23 GM |
24 | |
| 25 | ;;; Commentary: | |
| 26 | ||
| 27 | ;;; Code: | |
| 28 | ||
| 60ef4154 GM |
29 | ;; For Emacs < 22.2. |
| 30 | (eval-and-compile | |
| 31 | (unless (fboundp 'declare-function) (defmacro declare-function (&rest r)))) | |
| 32 | ||
| c113de23 GM |
33 | (require 'mail-parse) |
| 34 | (require 'mailcap) | |
| 35 | (require 'mm-bodies) | |
| 60ef4154 | 36 | (require 'gnus-util) |
| 23f87bed MB |
37 | (eval-when-compile (require 'cl) |
| 38 | (require 'term)) | |
| c113de23 GM |
39 | |
| 40 | (eval-and-compile | |
| 0e43de59 | 41 | (autoload 'mm-inline-partial "mm-partial") |
| 23f87bed | 42 | (autoload 'mm-inline-external-body "mm-extern") |
| 531bedc3 | 43 | (autoload 'mm-extern-cache-contents "mm-extern") |
| 0e43de59 | 44 | (autoload 'mm-insert-inline "mm-view")) |
| c113de23 | 45 | |
| b7e9d9c3 JB |
46 | (defvar gnus-current-window-configuration) |
| 47 | ||
| 23f87bed MB |
48 | (add-hook 'gnus-exit-gnus-hook 'mm-destroy-postponed-undisplay-list) |
| 49 | ||
| c113de23 GM |
50 | (defgroup mime-display () |
| 51 | "Display of MIME in mail and news articles." | |
| 23f87bed | 52 | :link '(custom-manual "(emacs-mime)Display Customization") |
| c113de23 GM |
53 | :version "21.1" |
| 54 | :group 'mail | |
| 55 | :group 'news | |
| 56 | :group 'multimedia) | |
| 57 | ||
| 23f87bed MB |
58 | (defgroup mime-security () |
| 59 | "MIME security in mail and news articles." | |
| 60 | :link '(custom-manual "(emacs-mime)Display Customization") | |
| 61 | :group 'mail | |
| 62 | :group 'news | |
| 63 | :group 'multimedia) | |
| 64 | ||
| c113de23 GM |
65 | ;;; Convenience macros. |
| 66 | ||
| 67 | (defmacro mm-handle-buffer (handle) | |
| 68 | `(nth 0 ,handle)) | |
| 69 | (defmacro mm-handle-type (handle) | |
| 70 | `(nth 1 ,handle)) | |
| 71 | (defsubst mm-handle-media-type (handle) | |
| 72 | (if (stringp (car handle)) | |
| 73 | (car handle) | |
| 74 | (car (mm-handle-type handle)))) | |
| 75 | (defsubst mm-handle-media-supertype (handle) | |
| 76 | (car (split-string (mm-handle-media-type handle) "/"))) | |
| 77 | (defsubst mm-handle-media-subtype (handle) | |
| 78 | (cadr (split-string (mm-handle-media-type handle) "/"))) | |
| 79 | (defmacro mm-handle-encoding (handle) | |
| 80 | `(nth 2 ,handle)) | |
| 81 | (defmacro mm-handle-undisplayer (handle) | |
| 82 | `(nth 3 ,handle)) | |
| 83 | (defmacro mm-handle-set-undisplayer (handle function) | |
| 84 | `(setcar (nthcdr 3 ,handle) ,function)) | |
| 85 | (defmacro mm-handle-disposition (handle) | |
| 86 | `(nth 4 ,handle)) | |
| 87 | (defmacro mm-handle-description (handle) | |
| 88 | `(nth 5 ,handle)) | |
| 89 | (defmacro mm-handle-cache (handle) | |
| 90 | `(nth 6 ,handle)) | |
| 91 | (defmacro mm-handle-set-cache (handle contents) | |
| 92 | `(setcar (nthcdr 6 ,handle) ,contents)) | |
| 93 | (defmacro mm-handle-id (handle) | |
| 94 | `(nth 7 ,handle)) | |
| 23f87bed MB |
95 | (defmacro mm-handle-multipart-original-buffer (handle) |
| 96 | `(get-text-property 0 'buffer (car ,handle))) | |
| 97 | (defmacro mm-handle-multipart-from (handle) | |
| 98 | `(get-text-property 0 'from (car ,handle))) | |
| 99 | (defmacro mm-handle-multipart-ctl-parameter (handle parameter) | |
| 100 | `(get-text-property 0 ,parameter (car ,handle))) | |
| 101 | ||
| c113de23 GM |
102 | (defmacro mm-make-handle (&optional buffer type encoding undisplayer |
| 103 | disposition description cache | |
| 104 | id) | |
| 105 | `(list ,buffer ,type ,encoding ,undisplayer | |
| 106 | ,disposition ,description ,cache ,id)) | |
| 107 | ||
| 23f87bed MB |
108 | (defcustom mm-text-html-renderer |
| 109 | (cond ((locate-library "w3") 'w3) | |
| 110 | ((executable-find "w3m") (if (locate-library "w3m") | |
| 111 | 'w3m | |
| 112 | 'w3m-standalone)) | |
| 113 | ((executable-find "links") 'links) | |
| 114 | ((executable-find "lynx") 'lynx) | |
| 115 | (t 'html2text)) | |
| 116 | "Render of HTML contents. | |
| 117 | It is one of defined renderer types, or a rendering function. | |
| 118 | The defined renderer types are: | |
| 119 | `w3' : use Emacs/W3; | |
| 120 | `w3m' : use emacs-w3m; | |
| 121 | `w3m-standalone': use w3m; | |
| 122 | `links': use links; | |
| 123 | `lynx' : use lynx; | |
| 124 | `html2text' : use html2text; | |
| 125 | nil : use external viewer." | |
| bf247b6e | 126 | :version "22.1" |
| 23f87bed MB |
127 | :type '(choice (const w3) |
| 128 | (const w3m) | |
| 129 | (const w3m-standalone) | |
| 130 | (const links) | |
| 131 | (const lynx) | |
| 132 | (const html2text) | |
| 133 | (const nil) | |
| 134 | (function)) | |
| 23f87bed MB |
135 | :group 'mime-display) |
| 136 | ||
| 137 | (defvar mm-inline-text-html-renderer nil | |
| 138 | "Function used for rendering inline HTML contents. | |
| 139 | It is suggested to customize `mm-text-html-renderer' instead.") | |
| 140 | ||
| 141 | (defcustom mm-inline-text-html-with-images nil | |
| 142 | "If non-nil, Gnus will allow retrieving images in HTML contents with | |
| 143 | the <img> tags. It has no effect on Emacs/w3. See also the | |
| 144 | documentation for the `mm-w3m-safe-url-regexp' variable." | |
| bf247b6e | 145 | :version "22.1" |
| 23f87bed MB |
146 | :type 'boolean |
| 147 | :group 'mime-display) | |
| 148 | ||
| 149 | (defcustom mm-w3m-safe-url-regexp "\\`cid:" | |
| 150 | "Regexp matching URLs which are considered to be safe. | |
| 151 | Some HTML mails might contain a nasty trick used by spammers, using | |
| 152 | the <img> tag which is far more evil than the [Click Here!] button. | |
| 153 | It is most likely intended to check whether the ominous spam mail has | |
| 154 | reached your eyes or not, in which case the spammer knows for sure | |
| 155 | that your email address is valid. It is done by embedding an | |
| 156 | identifier string into a URL that you might automatically retrieve | |
| 157 | when displaying the image. The default value is \"\\\\`cid:\" which only | |
| 158 | matches parts embedded to the Multipart/Related type MIME contents and | |
| 159 | Gnus will never connect to the spammer's site arbitrarily. You may | |
| 160 | set this variable to nil if you consider all urls to be safe." | |
| bf247b6e | 161 | :version "22.1" |
| 23f87bed MB |
162 | :type '(choice (regexp :tag "Regexp") |
| 163 | (const :tag "All URLs are safe" nil)) | |
| 164 | :group 'mime-display) | |
| 165 | ||
| 166 | (defcustom mm-inline-text-html-with-w3m-keymap t | |
| 167 | "If non-nil, use emacs-w3m command keys in the article buffer." | |
| bf247b6e | 168 | :version "22.1" |
| 23f87bed MB |
169 | :type 'boolean |
| 170 | :group 'mime-display) | |
| 171 | ||
| 172 | (defcustom mm-enable-external t | |
| 173 | "Indicate whether external MIME handlers should be used. | |
| 174 | ||
| 175 | If t, all defined external MIME handlers are used. If nil, files are saved by | |
| 176 | `mailcap-save-binary-file'. If it is the symbol `ask', you are prompted | |
| 177 | before the external MIME handler is invoked." | |
| bf247b6e | 178 | :version "22.1" |
| 23f87bed MB |
179 | :type '(choice (const :tag "Always" t) |
| 180 | (const :tag "Never" nil) | |
| 181 | (const :tag "Ask" ask)) | |
| 182 | :group 'mime-display) | |
| 183 | ||
| c113de23 | 184 | (defcustom mm-inline-media-tests |
| 23f87bed | 185 | '(("image/p?jpeg" |
| c113de23 GM |
186 | mm-inline-image |
| 187 | (lambda (handle) | |
| 188 | (mm-valid-and-fit-image-p 'jpeg handle))) | |
| 189 | ("image/png" | |
| 190 | mm-inline-image | |
| 191 | (lambda (handle) | |
| 192 | (mm-valid-and-fit-image-p 'png handle))) | |
| 193 | ("image/gif" | |
| 194 | mm-inline-image | |
| 195 | (lambda (handle) | |
| 196 | (mm-valid-and-fit-image-p 'gif handle))) | |
| 197 | ("image/tiff" | |
| 198 | mm-inline-image | |
| 199 | (lambda (handle) | |
| 200 | (mm-valid-and-fit-image-p 'tiff handle)) ) | |
| 201 | ("image/xbm" | |
| 202 | mm-inline-image | |
| 203 | (lambda (handle) | |
| 204 | (mm-valid-and-fit-image-p 'xbm handle))) | |
| 205 | ("image/x-xbitmap" | |
| 206 | mm-inline-image | |
| 207 | (lambda (handle) | |
| 208 | (mm-valid-and-fit-image-p 'xbm handle))) | |
| 209 | ("image/xpm" | |
| 210 | mm-inline-image | |
| 211 | (lambda (handle) | |
| 212 | (mm-valid-and-fit-image-p 'xpm handle))) | |
| 23f87bed | 213 | ("image/x-xpixmap" |
| c113de23 GM |
214 | mm-inline-image |
| 215 | (lambda (handle) | |
| 216 | (mm-valid-and-fit-image-p 'xpm handle))) | |
| 217 | ("image/bmp" | |
| 218 | mm-inline-image | |
| 219 | (lambda (handle) | |
| 220 | (mm-valid-and-fit-image-p 'bmp handle))) | |
| 5bb548d2 DL |
221 | ("image/x-portable-bitmap" |
| 222 | mm-inline-image | |
| 223 | (lambda (handle) | |
| 224 | (mm-valid-and-fit-image-p 'pbm handle))) | |
| c113de23 GM |
225 | ("text/plain" mm-inline-text identity) |
| 226 | ("text/enriched" mm-inline-text identity) | |
| 227 | ("text/richtext" mm-inline-text identity) | |
| 228 | ("text/x-patch" mm-display-patch-inline | |
| 229 | (lambda (handle) | |
| c615a00c SM |
230 | ;; If the diff-mode.el package is installed, the function is |
| 231 | ;; autoloaded. Checking (locate-library "diff-mode") would be trying | |
| 232 | ;; to cater to broken installations. OTOH checking the function | |
| 233 | ;; makes it possible to install another package which provides an | |
| 234 | ;; alternative implementation of diff-mode. --Stef | |
| 235 | (fboundp 'diff-mode))) | |
| ce9401f3 | 236 | ("application/emacs-lisp" mm-display-elisp-inline identity) |
| 23f87bed | 237 | ("application/x-emacs-lisp" mm-display-elisp-inline identity) |
| 01c52d31 | 238 | ("text/dns" mm-display-dns-inline identity) |
| c113de23 | 239 | ("text/html" |
| 23f87bed | 240 | mm-inline-text-html |
| c113de23 | 241 | (lambda (handle) |
| 23f87bed MB |
242 | (or mm-inline-text-html-renderer |
| 243 | mm-text-html-renderer))) | |
| c113de23 | 244 | ("text/x-vcard" |
| 23f87bed | 245 | mm-inline-text-vcard |
| c113de23 GM |
246 | (lambda (handle) |
| 247 | (or (featurep 'vcard) | |
| 248 | (locate-library "vcard")))) | |
| 249 | ("message/delivery-status" mm-inline-text identity) | |
| 250 | ("message/rfc822" mm-inline-message identity) | |
| 251 | ("message/partial" mm-inline-partial identity) | |
| 23f87bed | 252 | ("message/external-body" mm-inline-external-body identity) |
| c113de23 GM |
253 | ("text/.*" mm-inline-text identity) |
| 254 | ("audio/wav" mm-inline-audio | |
| 255 | (lambda (handle) | |
| 256 | (and (or (featurep 'nas-sound) (featurep 'native-sound)) | |
| 257 | (device-sound-enabled-p)))) | |
| 258 | ("audio/au" | |
| 259 | mm-inline-audio | |
| 260 | (lambda (handle) | |
| 261 | (and (or (featurep 'nas-sound) (featurep 'native-sound)) | |
| 262 | (device-sound-enabled-p)))) | |
| 263 | ("application/pgp-signature" ignore identity) | |
| 23f87bed MB |
264 | ("application/x-pkcs7-signature" ignore identity) |
| 265 | ("application/pkcs7-signature" ignore identity) | |
| 266 | ("application/x-pkcs7-mime" ignore identity) | |
| 267 | ("application/pkcs7-mime" ignore identity) | |
| c113de23 GM |
268 | ("multipart/alternative" ignore identity) |
| 269 | ("multipart/mixed" ignore identity) | |
| 23f87bed MB |
270 | ("multipart/related" ignore identity) |
| 271 | ;; Disable audio and image | |
| 272 | ("audio/.*" ignore ignore) | |
| 273 | ("image/.*" ignore ignore) | |
| 274 | ;; Default to displaying as text | |
| 275 | (".*" mm-inline-text mm-readable-p)) | |
| c113de23 | 276 | "Alist of media types/tests saying whether types can be displayed inline." |
| 23f87bed | 277 | :type '(repeat (list (regexp :tag "MIME type") |
| c113de23 GM |
278 | (function :tag "Display function") |
| 279 | (function :tag "Display test"))) | |
| 280 | :group 'mime-display) | |
| 281 | ||
| 282 | (defcustom mm-inlined-types | |
| 283 | '("image/.*" "text/.*" "message/delivery-status" "message/rfc822" | |
| 23f87bed MB |
284 | "message/partial" "message/external-body" "application/emacs-lisp" |
| 285 | "application/x-emacs-lisp" | |
| 286 | "application/pgp-signature" "application/x-pkcs7-signature" | |
| 287 | "application/pkcs7-signature" "application/x-pkcs7-mime" | |
| e499bc94 MB |
288 | "application/pkcs7-mime" |
| 289 | ;; Mutt still uses this even though it has already been withdrawn. | |
| 290 | "application/pgp") | |
| 23f87bed MB |
291 | "List of media types that are to be displayed inline. |
| 292 | See also `mm-inline-media-tests', which says how to display a media | |
| 293 | type inline." | |
| 3031d8b0 | 294 | :type '(repeat regexp) |
| 23f87bed MB |
295 | :group 'mime-display) |
| 296 | ||
| 297 | (defcustom mm-keep-viewer-alive-types | |
| 298 | '("application/postscript" "application/msword" "application/vnd.ms-excel" | |
| 299 | "application/pdf" "application/x-dvi") | |
| 300 | "List of media types for which the external viewer will not be killed | |
| 301 | when selecting a different article." | |
| bf247b6e | 302 | :version "22.1" |
| 3031d8b0 | 303 | :type '(repeat regexp) |
| c113de23 | 304 | :group 'mime-display) |
| a1506d29 | 305 | |
| c113de23 | 306 | (defcustom mm-automatic-display |
| 01c52d31 | 307 | '("text/plain" "text/enriched" "text/richtext" "text/html" "text/x-verbatim" |
| c113de23 | 308 | "text/x-vcard" "image/.*" "message/delivery-status" "multipart/.*" |
| 01c52d31 | 309 | "message/rfc822" "text/x-patch" "text/dns" "application/pgp-signature" |
| 23f87bed MB |
310 | "application/emacs-lisp" "application/x-emacs-lisp" |
| 311 | "application/x-pkcs7-signature" | |
| 312 | "application/pkcs7-signature" "application/x-pkcs7-mime" | |
| e499bc94 MB |
313 | "application/pkcs7-mime" |
| 314 | ;; Mutt still uses this even though it has already been withdrawn. | |
| 0565caeb | 315 | "application/pgp\\'") |
| c113de23 | 316 | "A list of MIME types to be displayed automatically." |
| 3031d8b0 | 317 | :type '(repeat regexp) |
| c113de23 GM |
318 | :group 'mime-display) |
| 319 | ||
| 23f87bed MB |
320 | (defcustom mm-attachment-override-types '("text/x-vcard" |
| 321 | "application/pkcs7-mime" | |
| 322 | "application/x-pkcs7-mime" | |
| 323 | "application/pkcs7-signature" | |
| 324 | "application/x-pkcs7-signature") | |
| c113de23 | 325 | "Types to have \"attachment\" ignored if they can be displayed inline." |
| 3031d8b0 | 326 | :type '(repeat regexp) |
| c113de23 GM |
327 | :group 'mime-display) |
| 328 | ||
| 329 | (defcustom mm-inline-override-types nil | |
| 330 | "Types to be treated as attachments even if they can be displayed inline." | |
| 3031d8b0 | 331 | :type '(repeat regexp) |
| c113de23 GM |
332 | :group 'mime-display) |
| 333 | ||
| 334 | (defcustom mm-automatic-external-display nil | |
| 335 | "List of MIME type regexps that will be displayed externally automatically." | |
| 3031d8b0 | 336 | :type '(repeat regexp) |
| c113de23 GM |
337 | :group 'mime-display) |
| 338 | ||
| 339 | (defcustom mm-discouraged-alternatives nil | |
| 340 | "List of MIME types that are discouraged when viewing multipart/alternative. | |
| 341 | Viewing agents are supposed to view the last possible part of a message, | |
| 342 | as that is supposed to be the richest. However, users may prefer other | |
| 343 | types instead, and this list says what types are most unwanted. If, | |
| 344 | for instance, text/html parts are very unwanted, and text/richtext are | |
| 345 | somewhat unwanted, then the value of this variable should be set | |
| 346 | to: | |
| 347 | ||
| 58090a8d MB |
348 | (\"text/html\" \"text/richtext\") |
| 349 | ||
| 350 | Adding \"image/.*\" might also be useful. Spammers use it as the | |
| 3031d8b0 MB |
351 | prefered part of multipart/alternative messages. See also |
| 352 | `gnus-buttonized-mime-types', to which adding \"multipart/alternative\" | |
| 353 | enables you to choose manually one of two types those mails include." | |
| 58090a8d | 354 | :type '(repeat regexp) ;; See `mm-preferred-alternative-precedence'. |
| c113de23 GM |
355 | :group 'mime-display) |
| 356 | ||
| 23f87bed MB |
357 | (defcustom mm-tmp-directory |
| 358 | (if (fboundp 'temp-directory) | |
| 359 | (temp-directory) | |
| 360 | (if (boundp 'temporary-file-directory) | |
| 361 | temporary-file-directory | |
| 362 | "/tmp/")) | |
| 363 | "Where mm will store its temporary files." | |
| 364 | :type 'directory | |
| 365 | :group 'mime-display) | |
| c113de23 GM |
366 | |
| 367 | (defcustom mm-inline-large-images nil | |
| 368 | "If non-nil, then all images fit in the buffer." | |
| 369 | :type 'boolean | |
| 370 | :group 'mime-display) | |
| 371 | ||
| 01c52d31 | 372 | (defcustom mm-file-name-rewrite-functions |
| 23f87bed | 373 | '(mm-file-name-delete-control mm-file-name-delete-gotchas) |
| 01c52d31 | 374 | "List of functions used for rewriting file names of MIME parts. |
| 23f87bed MB |
375 | Each function takes a file name as input and returns a file name. |
| 376 | ||
| 01c52d31 MB |
377 | Ready-made functions include `mm-file-name-delete-control', |
| 378 | `mm-file-name-delete-gotchas' (you should not remove these two | |
| 379 | functions), `mm-file-name-delete-whitespace', | |
| 380 | `mm-file-name-trim-whitespace', `mm-file-name-collapse-whitespace', | |
| 381 | `mm-file-name-replace-whitespace', `capitalize', `downcase', | |
| 382 | `upcase', and `upcase-initials'." | |
| 383 | :type '(list (set :inline t | |
| 384 | (const mm-file-name-delete-control) | |
| 385 | (const mm-file-name-delete-gotchas) | |
| 386 | (const mm-file-name-delete-whitespace) | |
| 387 | (const mm-file-name-trim-whitespace) | |
| 388 | (const mm-file-name-collapse-whitespace) | |
| 389 | (const mm-file-name-replace-whitespace) | |
| 390 | (const capitalize) | |
| 391 | (const downcase) | |
| 392 | (const upcase) | |
| 393 | (const upcase-initials) | |
| 394 | (repeat :inline t | |
| 395 | :tag "Function" | |
| 396 | function))) | |
| 397 | :version "23.0" ;; No Gnus | |
| 398 | :group 'mime-display) | |
| 399 | ||
| 23f87bed MB |
400 | |
| 401 | (defvar mm-path-name-rewrite-functions nil | |
| 402 | "*List of functions for rewriting the full file names of MIME parts. | |
| 403 | This is used when viewing parts externally, and is meant for | |
| 404 | transforming the absolute name so that non-compliant programs can find | |
| 405 | the file where it's saved. | |
| 406 | ||
| 407 | Each function takes a file name as input and returns a file name.") | |
| 408 | ||
| 409 | (defvar mm-file-name-replace-whitespace nil | |
| 410 | "String used for replacing whitespace characters; default is `\"_\"'.") | |
| 411 | ||
| 412 | (defcustom mm-default-directory nil | |
| 413 | "The default directory where mm will save files. | |
| 414 | If not set, `default-directory' will be used." | |
| 415 | :type '(choice directory (const :tag "Default" nil)) | |
| 416 | :group 'mime-display) | |
| 417 | ||
| 418 | (defcustom mm-attachment-file-modes 384 | |
| 419 | "Set the mode bits of saved attachments to this integer." | |
| bf247b6e | 420 | :version "22.1" |
| 23f87bed MB |
421 | :type 'integer |
| 422 | :group 'mime-display) | |
| 423 | ||
| 424 | (defcustom mm-external-terminal-program "xterm" | |
| 425 | "The program to start an external terminal." | |
| bf247b6e | 426 | :version "22.1" |
| 23f87bed MB |
427 | :type 'string |
| 428 | :group 'mime-display) | |
| 429 | ||
| c113de23 GM |
430 | ;;; Internal variables. |
| 431 | ||
| c113de23 GM |
432 | (defvar mm-last-shell-command "") |
| 433 | (defvar mm-content-id-alist nil) | |
| 23f87bed | 434 | (defvar mm-postponed-undisplay-list nil) |
| c113de23 GM |
435 | |
| 436 | ;; According to RFC2046, in particular, in a digest, the default | |
| 437 | ;; Content-Type value for a body part is changed from "text/plain" to | |
| 438 | ;; "message/rfc822". | |
| 439 | (defvar mm-dissect-default-type "text/plain") | |
| 440 | ||
| 23f87bed MB |
441 | (autoload 'mml2015-verify "mml2015") |
| 442 | (autoload 'mml2015-verify-test "mml2015") | |
| 443 | (autoload 'mml-smime-verify "mml-smime") | |
| 444 | (autoload 'mml-smime-verify-test "mml-smime") | |
| 445 | ||
| 446 | (defvar mm-verify-function-alist | |
| 447 | '(("application/pgp-signature" mml2015-verify "PGP" mml2015-verify-test) | |
| 448 | ("application/x-gnus-pgp-signature" mm-uu-pgp-signed-extract-1 "PGP" | |
| 449 | mm-uu-pgp-signed-test) | |
| 450 | ("application/pkcs7-signature" mml-smime-verify "S/MIME" | |
| 451 | mml-smime-verify-test) | |
| 452 | ("application/x-pkcs7-signature" mml-smime-verify "S/MIME" | |
| 453 | mml-smime-verify-test))) | |
| 454 | ||
| 455 | (defcustom mm-verify-option 'never | |
| 456 | "Option of verifying signed parts. | |
| 457 | `never', not verify; `always', always verify; | |
| 01c52d31 MB |
458 | `known', only verify known protocols. Otherwise, ask user. |
| 459 | ||
| 460 | When set to `always' or `known', you should add | |
| 461 | \"multipart/signed\" to `gnus-buttonized-mime-types' to see | |
| 462 | result of the verification." | |
| bf247b6e | 463 | :version "22.1" |
| 23f87bed MB |
464 | :type '(choice (item always) |
| 465 | (item never) | |
| 466 | (item :tag "only known protocols" known) | |
| 467 | (item :tag "ask" nil)) | |
| 468 | :group 'mime-security) | |
| 469 | ||
| 470 | (autoload 'mml2015-decrypt "mml2015") | |
| 471 | (autoload 'mml2015-decrypt-test "mml2015") | |
| 472 | ||
| 473 | (defvar mm-decrypt-function-alist | |
| 474 | '(("application/pgp-encrypted" mml2015-decrypt "PGP" mml2015-decrypt-test) | |
| 475 | ("application/x-gnus-pgp-encrypted" mm-uu-pgp-encrypted-extract-1 "PGP" | |
| 476 | mm-uu-pgp-encrypted-test))) | |
| 477 | ||
| 478 | (defcustom mm-decrypt-option nil | |
| 479 | "Option of decrypting encrypted parts. | |
| 480 | `never', not decrypt; `always', always decrypt; | |
| 481 | `known', only decrypt known protocols. Otherwise, ask user." | |
| bf247b6e | 482 | :version "22.1" |
| 23f87bed MB |
483 | :type '(choice (item always) |
| 484 | (item never) | |
| 485 | (item :tag "only known protocols" known) | |
| 486 | (item :tag "ask" nil)) | |
| 487 | :group 'mime-security) | |
| 488 | ||
| 489 | (defvar mm-viewer-completion-map | |
| 490 | (let ((map (make-sparse-keymap 'mm-viewer-completion-map))) | |
| 491 | (set-keymap-parent map minibuffer-local-completion-map) | |
| c615a00c SM |
492 | ;; Should we bind other key to minibuffer-complete-word? |
| 493 | (define-key map " " 'self-insert-command) | |
| 23f87bed MB |
494 | map) |
| 495 | "Keymap for input viewer with completion.") | |
| 496 | ||
| 62a27ccf DL |
497 | (defvar mm-viewer-completion-map |
| 498 | (let ((map (make-sparse-keymap 'mm-viewer-completion-map))) | |
| 499 | (set-keymap-parent map minibuffer-local-completion-map) | |
| c615a00c SM |
500 | ;; Should we bind other key to minibuffer-complete-word? |
| 501 | (define-key map " " 'self-insert-command) | |
| 62a27ccf DL |
502 | map) |
| 503 | "Keymap for input viewer with completion.") | |
| 504 | ||
| c113de23 GM |
505 | ;;; The functions. |
| 506 | ||
| 23f87bed MB |
507 | (defun mm-alist-to-plist (alist) |
| 508 | "Convert association list ALIST into the equivalent property-list form. | |
| 509 | The plist is returned. This converts from | |
| 510 | ||
| 511 | \((a . 1) (b . 2) (c . 3)) | |
| 512 | ||
| 513 | into | |
| 514 | ||
| 515 | \(a 1 b 2 c 3) | |
| 516 | ||
| 517 | The original alist is not modified. See also `destructive-alist-to-plist'." | |
| 518 | (let (plist) | |
| 519 | (while alist | |
| 520 | (let ((el (car alist))) | |
| 521 | (setq plist (cons (cdr el) (cons (car el) plist)))) | |
| 522 | (setq alist (cdr alist))) | |
| 523 | (nreverse plist))) | |
| 524 | ||
| 525 | (defun mm-keep-viewer-alive-p (handle) | |
| 526 | "Say whether external viewer for HANDLE should stay alive." | |
| 527 | (let ((types mm-keep-viewer-alive-types) | |
| 528 | (type (mm-handle-media-type handle)) | |
| 529 | ty) | |
| 530 | (catch 'found | |
| 531 | (while (setq ty (pop types)) | |
| 532 | (when (string-match ty type) | |
| 533 | (throw 'found t)))))) | |
| 534 | ||
| 535 | (defun mm-handle-set-external-undisplayer (handle function) | |
| 536 | "Set the undisplayer for HANDLE to FUNCTION. | |
| 537 | Postpone undisplaying of viewers for types in | |
| 538 | `mm-keep-viewer-alive-types'." | |
| 539 | (if (mm-keep-viewer-alive-p handle) | |
| 540 | (let ((new-handle (copy-sequence handle))) | |
| 541 | (mm-handle-set-undisplayer new-handle function) | |
| 542 | (mm-handle-set-undisplayer handle nil) | |
| 543 | (push new-handle mm-postponed-undisplay-list)) | |
| 544 | (mm-handle-set-undisplayer handle function))) | |
| 545 | ||
| 546 | (defun mm-destroy-postponed-undisplay-list () | |
| 547 | (when mm-postponed-undisplay-list | |
| 548 | (message "Destroying external MIME viewers") | |
| 549 | (mm-destroy-parts mm-postponed-undisplay-list))) | |
| 550 | ||
| ee7d3cc0 | 551 | (defun mm-dissect-buffer (&optional no-strict-mime loose-mime from) |
| c113de23 GM |
552 | "Dissect the current buffer and return a list of MIME handles." |
| 553 | (save-excursion | |
| ee7d3cc0 | 554 | (let (ct ctl type subtype cte cd description id result) |
| c113de23 GM |
555 | (save-restriction |
| 556 | (mail-narrow-to-head) | |
| 557 | (when (or no-strict-mime | |
| 23f87bed | 558 | loose-mime |
| c113de23 GM |
559 | (mail-fetch-field "mime-version")) |
| 560 | (setq ct (mail-fetch-field "content-type") | |
| c96ec15a | 561 | ctl (and ct (mail-header-parse-content-type ct)) |
| c113de23 GM |
562 | cte (mail-fetch-field "content-transfer-encoding") |
| 563 | cd (mail-fetch-field "content-disposition") | |
| 564 | description (mail-fetch-field "content-description") | |
| 23f87bed | 565 | id (mail-fetch-field "content-id")) |
| ee7d3cc0 | 566 | (unless from |
| c96ec15a | 567 | (setq from (mail-fetch-field "from"))) |
| 23f87bed MB |
568 | ;; FIXME: In some circumstances, this code is running within |
| 569 | ;; an unibyte macro. mail-extract-address-components | |
| 570 | ;; creates unibyte buffers. This `if', though not a perfect | |
| 571 | ;; solution, avoids most of them. | |
| 572 | (if from | |
| 573 | (setq from (cadr (mail-extract-address-components from)))))) | |
| c113de23 GM |
574 | (if (or (not ctl) |
| 575 | (not (string-match "/" (car ctl)))) | |
| 576 | (mm-dissect-singlepart | |
| 577 | (list mm-dissect-default-type) | |
| 01c52d31 | 578 | (and cte (intern (downcase (mail-header-strip cte)))) |
| c113de23 | 579 | no-strict-mime |
| c96ec15a | 580 | (and cd (mail-header-parse-content-disposition cd)) |
| c113de23 GM |
581 | description) |
| 582 | (setq type (split-string (car ctl) "/")) | |
| 583 | (setq subtype (cadr type) | |
| 54e573e6 | 584 | type (car type)) |
| c113de23 GM |
585 | (setq |
| 586 | result | |
| 587 | (cond | |
| 588 | ((equal type "multipart") | |
| 589 | (let ((mm-dissect-default-type (if (equal subtype "digest") | |
| 590 | "message/rfc822" | |
| 23f87bed MB |
591 | "text/plain")) |
| 592 | (start (cdr (assq 'start (cdr ctl))))) | |
| 593 | (add-text-properties 0 (length (car ctl)) | |
| 594 | (mm-alist-to-plist (cdr ctl)) (car ctl)) | |
| 595 | ||
| 596 | ;; what really needs to be done here is a way to link a | |
| 597 | ;; MIME handle back to it's parent MIME handle (in a multilevel | |
| 598 | ;; MIME article). That would probably require changing | |
| c615a00c | 599 | ;; the mm-handle API so we simply store the multipart buffer |
| 23f87bed MB |
600 | ;; name as a text property of the "multipart/whatever" string. |
| 601 | (add-text-properties 0 (length (car ctl)) | |
| 602 | (list 'buffer (mm-copy-to-buffer) | |
| 603 | 'from from | |
| 604 | 'start start) | |
| 605 | (car ctl)) | |
| ee7d3cc0 | 606 | (cons (car ctl) (mm-dissect-multipart ctl from)))) |
| c113de23 | 607 | (t |
| 23f87bed MB |
608 | (mm-possibly-verify-or-decrypt |
| 609 | (mm-dissect-singlepart | |
| 610 | ctl | |
| 01c52d31 | 611 | (and cte (intern (downcase (mail-header-strip cte)))) |
| 23f87bed | 612 | no-strict-mime |
| c96ec15a | 613 | (and cd (mail-header-parse-content-disposition cd)) |
| 23f87bed MB |
614 | description id) |
| 615 | ctl)))) | |
| c113de23 GM |
616 | (when id |
| 617 | (when (string-match " *<\\(.*\\)> *" id) | |
| 618 | (setq id (match-string 1 id))) | |
| 619 | (push (cons id result) mm-content-id-alist)) | |
| 620 | result)))) | |
| 621 | ||
| 622 | (defun mm-dissect-singlepart (ctl cte &optional force cdl description id) | |
| 623 | (when (or force | |
| 624 | (if (equal "text/plain" (car ctl)) | |
| 625 | (assoc 'format ctl) | |
| 626 | t)) | |
| 23f87bed MB |
627 | (mm-make-handle |
| 628 | (mm-copy-to-buffer) ctl cte nil cdl description nil id))) | |
| c113de23 | 629 | |
| ee7d3cc0 | 630 | (defun mm-dissect-multipart (ctl from) |
| c113de23 GM |
631 | (goto-char (point-min)) |
| 632 | (let* ((boundary (concat "\n--" (mail-content-type-get ctl 'boundary))) | |
| 633 | (close-delimiter (concat (regexp-quote boundary) "--[ \t]*$")) | |
| 634 | start parts | |
| 635 | (end (save-excursion | |
| 636 | (goto-char (point-max)) | |
| 637 | (if (re-search-backward close-delimiter nil t) | |
| 638 | (match-beginning 0) | |
| 639 | (point-max))))) | |
| 640 | (setq boundary (concat (regexp-quote boundary) "[ \t]*$")) | |
| 4481aa98 | 641 | (while (and (< (point) end) (re-search-forward boundary end t)) |
| c113de23 GM |
642 | (goto-char (match-beginning 0)) |
| 643 | (when start | |
| 644 | (save-excursion | |
| 645 | (save-restriction | |
| 646 | (narrow-to-region start (point)) | |
| ee7d3cc0 | 647 | (setq parts (nconc (list (mm-dissect-buffer t nil from)) parts))))) |
| 23f87bed MB |
648 | (end-of-line 2) |
| 649 | (or (looking-at boundary) | |
| 650 | (forward-line 1)) | |
| c113de23 | 651 | (setq start (point))) |
| 4481aa98 | 652 | (when (and start (< start end)) |
| c113de23 GM |
653 | (save-excursion |
| 654 | (save-restriction | |
| 655 | (narrow-to-region start end) | |
| ee7d3cc0 | 656 | (setq parts (nconc (list (mm-dissect-buffer t nil from)) parts))))) |
| 23f87bed | 657 | (mm-possibly-verify-or-decrypt (nreverse parts) ctl))) |
| c113de23 GM |
658 | |
| 659 | (defun mm-copy-to-buffer () | |
| 660 | "Copy the contents of the current buffer to a fresh buffer." | |
| c113de23 GM |
661 | (let ((obuf (current-buffer)) |
| 662 | beg) | |
| 663 | (goto-char (point-min)) | |
| 664 | (search-forward-regexp "^\n" nil t) | |
| 665 | (setq beg (point)) | |
| 54e573e6 | 666 | (with-current-buffer |
| f4dd4ae8 MB |
667 | ;; Preserve the data's unibyteness (for url-insert-file-contents). |
| 668 | (let ((default-enable-multibyte-characters (mm-multibyte-p))) | |
| 54e573e6 | 669 | (generate-new-buffer " *mm*")) |
| c113de23 GM |
670 | (insert-buffer-substring obuf beg) |
| 671 | (current-buffer)))) | |
| 672 | ||
| 23f87bed MB |
673 | (defun mm-display-parts (handle &optional no-default) |
| 674 | (if (stringp (car handle)) | |
| 675 | (mapcar 'mm-display-parts (cdr handle)) | |
| 676 | (if (bufferp (car handle)) | |
| 677 | (save-restriction | |
| 678 | (narrow-to-region (point) (point)) | |
| 679 | (mm-display-part handle) | |
| 680 | (goto-char (point-max))) | |
| 681 | (mapcar 'mm-display-parts handle)))) | |
| 682 | ||
| c113de23 GM |
683 | (defun mm-display-part (handle &optional no-default) |
| 684 | "Display the MIME part represented by HANDLE. | |
| 685 | Returns nil if the part is removed; inline if displayed inline; | |
| 686 | external if displayed external." | |
| 687 | (save-excursion | |
| 688 | (mailcap-parse-mailcaps) | |
| 689 | (if (mm-handle-displayed-p handle) | |
| 690 | (mm-remove-part handle) | |
| 163cb72d MB |
691 | (let* ((ehandle (if (equal (mm-handle-media-type handle) |
| 692 | "message/external-body") | |
| 693 | (progn | |
| 694 | (unless (mm-handle-cache handle) | |
| 695 | (mm-extern-cache-contents handle)) | |
| 696 | (mm-handle-cache handle)) | |
| 697 | handle)) | |
| 698 | (type (mm-handle-media-type ehandle)) | |
| 23f87bed MB |
699 | (method (mailcap-mime-info type)) |
| 700 | (filename (or (mail-content-type-get | |
| 701 | (mm-handle-disposition handle) 'filename) | |
| 702 | (mail-content-type-get | |
| 703 | (mm-handle-type handle) 'name) | |
| 704 | "<file>")) | |
| 705 | (external mm-enable-external)) | |
| 163cb72d MB |
706 | (if (and (mm-inlinable-p ehandle) |
| 707 | (mm-inlined-p ehandle)) | |
| c113de23 GM |
708 | (progn |
| 709 | (forward-line 1) | |
| 710 | (mm-display-inline handle) | |
| 711 | 'inline) | |
| 712 | (when (or method | |
| 713 | (not no-default)) | |
| 714 | (if (and (not method) | |
| 163cb72d | 715 | (equal "text" (car (split-string type "/")))) |
| c113de23 GM |
716 | (progn |
| 717 | (forward-line 1) | |
| 718 | (mm-insert-inline handle (mm-get-part handle)) | |
| 719 | 'inline) | |
| 54e573e6 MB |
720 | (setq external |
| 721 | (and method ;; If nil, we always use "save". | |
| 23f87bed MB |
722 | (stringp method) ;; 'mailcap-save-binary-file |
| 723 | (or (eq mm-enable-external t) | |
| 724 | (and (eq mm-enable-external 'ask) | |
| 725 | (y-or-n-p | |
| 726 | (concat | |
| 727 | "Display part (" type | |
| 728 | ") using external program" | |
| 729 | ;; Can non-string method ever happen? | |
| 730 | (if (stringp method) | |
| 731 | (concat | |
| 732 | " \"" (format method filename) "\"") | |
| 733 | "") | |
| 54e573e6 | 734 | "? ")))))) |
| 23f87bed MB |
735 | (if external |
| 736 | (mm-display-external | |
| 737 | handle (or method 'mailcap-save-binary-file)) | |
| 738 | (mm-display-external | |
| 739 | handle 'mailcap-save-binary-file))))))))) | |
| c113de23 | 740 | |
| 60ef4154 GM |
741 | (declare-function gnus-configure-windows "gnus-win" (setting &optional force)) |
| 742 | ||
| c113de23 GM |
743 | (defun mm-display-external (handle method) |
| 744 | "Display HANDLE using METHOD." | |
| 745 | (let ((outbuf (current-buffer))) | |
| 746 | (mm-with-unibyte-buffer | |
| 747 | (if (functionp method) | |
| 748 | (let ((cur (current-buffer))) | |
| 749 | (if (eq method 'mailcap-save-binary-file) | |
| 750 | (progn | |
| 6eb681a3 | 751 | (set-buffer (generate-new-buffer " *mm*")) |
| c113de23 GM |
752 | (setq method nil)) |
| 753 | (mm-insert-part handle) | |
| 87035689 | 754 | (mm-add-meta-html-tag handle) |
| c113de23 GM |
755 | (let ((win (get-buffer-window cur t))) |
| 756 | (when win | |
| 757 | (select-window win))) | |
| 6eb681a3 | 758 | (switch-to-buffer (generate-new-buffer " *mm*"))) |
| 23f87bed | 759 | (buffer-disable-undo) |
| c113de23 GM |
760 | (mm-set-buffer-file-coding-system mm-binary-coding-system) |
| 761 | (insert-buffer-substring cur) | |
| 762 | (goto-char (point-min)) | |
| 23f87bed MB |
763 | (when method |
| 764 | (message "Viewing with %s" method)) | |
| c113de23 GM |
765 | (let ((mm (current-buffer)) |
| 766 | (non-viewer (assq 'non-viewer | |
| 767 | (mailcap-mime-info | |
| 768 | (mm-handle-media-type handle) t)))) | |
| 769 | (unwind-protect | |
| 770 | (if method | |
| 771 | (funcall method) | |
| 772 | (mm-save-part handle)) | |
| 773 | (when (and (not non-viewer) | |
| 774 | method) | |
| 775 | (mm-handle-set-undisplayer handle mm))))) | |
| 776 | ;; The function is a string to be executed. | |
| 777 | (mm-insert-part handle) | |
| 87035689 | 778 | (mm-add-meta-html-tag handle) |
| 23f87bed | 779 | (let* ((dir (mm-make-temp-file |
| 3efe5554 | 780 | (expand-file-name "emm." mm-tmp-directory) 'dir)) |
| 23f87bed MB |
781 | (filename (or |
| 782 | (mail-content-type-get | |
| 783 | (mm-handle-disposition handle) 'filename) | |
| 784 | (mail-content-type-get | |
| 785 | (mm-handle-type handle) 'name))) | |
| c113de23 GM |
786 | (mime-info (mailcap-mime-info |
| 787 | (mm-handle-media-type handle) t)) | |
| 788 | (needsterm (or (assoc "needsterm" mime-info) | |
| 789 | (assoc "needsterminal" mime-info))) | |
| 790 | (copiousoutput (assoc "copiousoutput" mime-info)) | |
| 791 | file buffer) | |
| 792 | ;; We create a private sub-directory where we store our files. | |
| c113de23 GM |
793 | (set-file-modes dir 448) |
| 794 | (if filename | |
| 23f87bed MB |
795 | (setq file (expand-file-name |
| 796 | (gnus-map-function mm-file-name-rewrite-functions | |
| 797 | (file-name-nondirectory filename)) | |
| 798 | dir)) | |
| cf5a5c38 MB |
799 | ;; Use nametemplate (defined in RFC1524) if it is specified |
| 800 | ;; in mailcap. | |
| 801 | (let ((suffix (cdr (assoc "nametemplate" mime-info)))) | |
| 802 | (if (and suffix | |
| 803 | (string-match "\\`%s\\(\\..+\\)\\'" suffix)) | |
| 804 | (setq suffix (match-string 1 suffix)) | |
| 805 | ;; Otherwise, use a suffix according to | |
| 806 | ;; `mailcap-mime-extensions'. | |
| 807 | (setq suffix (car (rassoc (mm-handle-media-type handle) | |
| 808 | mailcap-mime-extensions)))) | |
| 809 | (setq file (mm-make-temp-file (expand-file-name "mm." dir) | |
| 810 | nil suffix)))) | |
| c113de23 GM |
811 | (let ((coding-system-for-write mm-binary-coding-system)) |
| 812 | (write-region (point-min) (point-max) file nil 'nomesg)) | |
| 813 | (message "Viewing with %s" method) | |
| 23f87bed MB |
814 | (cond |
| 815 | (needsterm | |
| 816 | (let ((command (mm-mailcap-command | |
| 817 | method file (mm-handle-type handle)))) | |
| 818 | (unwind-protect | |
| 819 | (if window-system | |
| 820 | (start-process "*display*" nil | |
| 821 | mm-external-terminal-program | |
| 822 | "-e" shell-file-name | |
| 823 | shell-command-switch command) | |
| 824 | (require 'term) | |
| 825 | (require 'gnus-win) | |
| 826 | (set-buffer | |
| 827 | (setq buffer | |
| 828 | (make-term "display" | |
| 829 | shell-file-name | |
| 830 | nil | |
| 831 | shell-command-switch command))) | |
| 832 | (term-mode) | |
| 833 | (term-char-mode) | |
| 834 | (set-process-sentinel | |
| 835 | (get-buffer-process buffer) | |
| 836 | `(lambda (process state) | |
| 837 | (if (eq 'exit (process-status process)) | |
| 838 | (gnus-configure-windows | |
| 839 | ',gnus-current-window-configuration)))) | |
| 840 | (gnus-configure-windows 'display-term)) | |
| 841 | (mm-handle-set-external-undisplayer handle (cons file buffer))) | |
| 842 | (message "Displaying %s..." command)) | |
| 843 | 'external) | |
| 844 | (copiousoutput | |
| 845 | (with-current-buffer outbuf | |
| 846 | (forward-line 1) | |
| 847 | (mm-insert-inline | |
| 848 | handle | |
| 849 | (unwind-protect | |
| 850 | (progn | |
| 851 | (call-process shell-file-name nil | |
| 852 | (setq buffer | |
| 853 | (generate-new-buffer " *mm*")) | |
| 854 | nil | |
| 855 | shell-command-switch | |
| 856 | (mm-mailcap-command | |
| 857 | method file (mm-handle-type handle))) | |
| 858 | (if (buffer-live-p buffer) | |
| c615a00c | 859 | (with-current-buffer buffer |
| 23f87bed MB |
860 | (buffer-string)))) |
| 861 | (progn | |
| 862 | (ignore-errors (delete-file file)) | |
| 863 | (ignore-errors (delete-directory | |
| 864 | (file-name-directory file))) | |
| 865 | (ignore-errors (kill-buffer buffer)))))) | |
| 866 | 'inline) | |
| 867 | (t | |
| 58090a8d MB |
868 | ;; Deleting the temp file should be postponed for some wrappers, |
| 869 | ;; shell scripts, and so on, which might exit right after having | |
| 870 | ;; started a viewer command as a background job. | |
| 23f87bed MB |
871 | (let ((command (mm-mailcap-command |
| 872 | method file (mm-handle-type handle)))) | |
| 873 | (unwind-protect | |
| 4b91459a MB |
874 | (progn |
| 875 | (start-process "*display*" | |
| 876 | (setq buffer | |
| 877 | (generate-new-buffer " *mm*")) | |
| 878 | shell-file-name | |
| 879 | shell-command-switch command) | |
| 880 | (set-process-sentinel | |
| 881 | (get-buffer-process buffer) | |
| 58090a8d MB |
882 | (lexical-let ;; Don't use `let'. |
| 883 | ;; Function used to remove temp file and directory. | |
| 884 | ((fn `(lambda nil | |
| 885 | ;; Don't use `ignore-errors'. | |
| 886 | (condition-case nil | |
| 887 | (delete-file ,file) | |
| 888 | (error)) | |
| 889 | (condition-case nil | |
| 890 | (delete-directory | |
| 891 | ,(file-name-directory file)) | |
| 892 | (error)))) | |
| 893 | ;; Form uses to kill the process buffer and | |
| 894 | ;; remove the undisplayer. | |
| 895 | (fm `(progn | |
| 896 | (kill-buffer ,buffer) | |
| 897 | ,(macroexpand | |
| 898 | (list 'mm-handle-set-undisplayer | |
| 899 | (list 'quote handle) | |
| 900 | nil)))) | |
| 901 | ;; Message to be issued when the process exits. | |
| 902 | (done (format "Displaying %s...done" command)) | |
| 903 | ;; In particular, the timer object (which is | |
| 904 | ;; a vector in Emacs but is a list in XEmacs) | |
| 905 | ;; requires that it is lexically scoped. | |
| 906 | (timer (run-at-time 2.0 nil 'ignore))) | |
| 9efa445f | 907 | (if (featurep 'xemacs) |
| ba361211 MB |
908 | (lambda (process state) |
| 909 | (when (eq 'exit (process-status process)) | |
| 910 | (if (memq timer itimer-list) | |
| 911 | (set-itimer-function timer fn) | |
| 912 | (funcall fn)) | |
| 913 | (ignore-errors (eval fm)) | |
| 914 | (message "%s" done))) | |
| 915 | (lambda (process state) | |
| 916 | (when (eq 'exit (process-status process)) | |
| 917 | (if (memq timer timer-list) | |
| 918 | (timer-set-function timer fn) | |
| 919 | (funcall fn)) | |
| 920 | (ignore-errors (eval fm)) | |
| 921 | (message "%s" done))))))) | |
| 23f87bed MB |
922 | (mm-handle-set-external-undisplayer |
| 923 | handle (cons file buffer))) | |
| 924 | (message "Displaying %s..." command)) | |
| 925 | 'external))))))) | |
| a1506d29 | 926 | |
| c113de23 GM |
927 | (defun mm-mailcap-command (method file type-list) |
| 928 | (let ((ctl (cdr type-list)) | |
| 929 | (beg 0) | |
| 930 | (uses-stdin t) | |
| 931 | out sub total) | |
| 23f87bed MB |
932 | (while (string-match "%{\\([^}]+\\)}\\|'%s'\\|\"%s\"\\|%s\\|%t\\|%%" |
| 933 | method beg) | |
| c113de23 GM |
934 | (push (substring method beg (match-beginning 0)) out) |
| 935 | (setq beg (match-end 0) | |
| 936 | total (match-string 0 method) | |
| 937 | sub (match-string 1 method)) | |
| 938 | (cond | |
| 939 | ((string= total "%%") | |
| 940 | (push "%" out)) | |
| 23f87bed MB |
941 | ((or (string= total "%s") |
| 942 | ;; We do our own quoting. | |
| 943 | (string= total "'%s'") | |
| 944 | (string= total "\"%s\"")) | |
| c113de23 | 945 | (setq uses-stdin nil) |
| 01c52d31 | 946 | (push (shell-quote-argument |
| 23f87bed | 947 | (gnus-map-function mm-path-name-rewrite-functions file)) out)) |
| c113de23 | 948 | ((string= total "%t") |
| 01c52d31 | 949 | (push (shell-quote-argument (car type-list)) out)) |
| c113de23 | 950 | (t |
| 01c52d31 | 951 | (push (shell-quote-argument (or (cdr (assq (intern sub) ctl)) "")) out)))) |
| c113de23 | 952 | (push (substring method beg (length method)) out) |
| 23f87bed MB |
953 | (when uses-stdin |
| 954 | (push "<" out) | |
| 01c52d31 | 955 | (push (shell-quote-argument |
| 23f87bed MB |
956 | (gnus-map-function mm-path-name-rewrite-functions file)) |
| 957 | out)) | |
| c113de23 | 958 | (mapconcat 'identity (nreverse out) ""))) |
| a1506d29 | 959 | |
| c113de23 GM |
960 | (defun mm-remove-parts (handles) |
| 961 | "Remove the displayed MIME parts represented by HANDLES." | |
| 962 | (if (and (listp handles) | |
| 963 | (bufferp (car handles))) | |
| 964 | (mm-remove-part handles) | |
| 965 | (let (handle) | |
| 966 | (while (setq handle (pop handles)) | |
| 967 | (cond | |
| 968 | ((stringp handle) | |
| 23f87bed MB |
969 | (when (buffer-live-p (get-text-property 0 'buffer handle)) |
| 970 | (kill-buffer (get-text-property 0 'buffer handle)))) | |
| c113de23 GM |
971 | ((and (listp handle) |
| 972 | (stringp (car handle))) | |
| 973 | (mm-remove-parts (cdr handle))) | |
| 974 | (t | |
| 975 | (mm-remove-part handle))))))) | |
| 976 | ||
| 977 | (defun mm-destroy-parts (handles) | |
| 978 | "Remove the displayed MIME parts represented by HANDLES." | |
| 979 | (if (and (listp handles) | |
| 980 | (bufferp (car handles))) | |
| 981 | (mm-destroy-part handles) | |
| 982 | (let (handle) | |
| 983 | (while (setq handle (pop handles)) | |
| 984 | (cond | |
| 985 | ((stringp handle) | |
| 23f87bed MB |
986 | (when (buffer-live-p (get-text-property 0 'buffer handle)) |
| 987 | (kill-buffer (get-text-property 0 'buffer handle)))) | |
| c113de23 GM |
988 | ((and (listp handle) |
| 989 | (stringp (car handle))) | |
| 23f87bed | 990 | (mm-destroy-parts handle)) |
| c113de23 GM |
991 | (t |
| 992 | (mm-destroy-part handle))))))) | |
| 993 | ||
| 994 | (defun mm-remove-part (handle) | |
| 995 | "Remove the displayed MIME part represented by HANDLE." | |
| 996 | (when (listp handle) | |
| 997 | (let ((object (mm-handle-undisplayer handle))) | |
| 998 | (ignore-errors | |
| 999 | (cond | |
| 1000 | ;; Internally displayed part. | |
| 1001 | ((mm-annotationp object) | |
| 60ef4154 GM |
1002 | (if (featurep 'xemacs) |
| 1003 | (delete-annotation object))) | |
| c113de23 GM |
1004 | ((or (functionp object) |
| 1005 | (and (listp object) | |
| 1006 | (eq (car object) 'lambda))) | |
| 1007 | (funcall object)) | |
| 1008 | ;; Externally displayed part. | |
| 1009 | ((consp object) | |
| 23f87bed MB |
1010 | (condition-case () |
| 1011 | (while (get-buffer-process (cdr object)) | |
| 1012 | (interrupt-process (get-buffer-process (cdr object))) | |
| 1013 | (message "Waiting for external displayer to die...") | |
| 1014 | (sit-for 1)) | |
| 1015 | (quit) | |
| 1016 | (error)) | |
| 1017 | (ignore-errors (and (cdr object) (kill-buffer (cdr object)))) | |
| 1018 | (message "Waiting for external displayer to die...done") | |
| c113de23 | 1019 | (ignore-errors (delete-file (car object))) |
| 23f87bed MB |
1020 | (ignore-errors (delete-directory (file-name-directory |
| 1021 | (car object))))) | |
| c113de23 GM |
1022 | ((bufferp object) |
| 1023 | (when (buffer-live-p object) | |
| 1024 | (kill-buffer object))))) | |
| 1025 | (mm-handle-set-undisplayer handle nil)))) | |
| 1026 | ||
| 1027 | (defun mm-display-inline (handle) | |
| 1028 | (let* ((type (mm-handle-media-type handle)) | |
| 1029 | (function (cadr (mm-assoc-string-match mm-inline-media-tests type)))) | |
| 1030 | (funcall function handle) | |
| 1031 | (goto-char (point-min)))) | |
| 1032 | ||
| 1033 | (defun mm-assoc-string-match (alist type) | |
| 1034 | (dolist (elem alist) | |
| 1035 | (when (string-match (car elem) type) | |
| 1036 | (return elem)))) | |
| 1037 | ||
| 23f87bed MB |
1038 | (defun mm-automatic-display-p (handle) |
| 1039 | "Say whether the user wants HANDLE to be displayed automatically." | |
| 1040 | (let ((methods mm-automatic-display) | |
| 1041 | (type (mm-handle-media-type handle)) | |
| 1042 | method result) | |
| 1043 | (while (setq method (pop methods)) | |
| 1044 | (when (and (not (mm-inline-override-p handle)) | |
| 1045 | (string-match method type)) | |
| 1046 | (setq result t | |
| 1047 | methods nil))) | |
| 1048 | result)) | |
| 1049 | ||
| 54e573e6 MB |
1050 | (defun mm-inlinable-p (handle &optional type) |
| 1051 | "Say whether HANDLE can be displayed inline. | |
| 1052 | TYPE is the mime-type of the object; it defaults to the one given | |
| 1053 | in HANDLE." | |
| 1054 | (unless type (setq type (mm-handle-media-type handle))) | |
| c113de23 | 1055 | (let ((alist mm-inline-media-tests) |
| c113de23 GM |
1056 | test) |
| 1057 | (while alist | |
| 1058 | (when (string-match (caar alist) type) | |
| 1059 | (setq test (caddar alist) | |
| 1060 | alist nil) | |
| 1061 | (setq test (funcall test handle))) | |
| 1062 | (pop alist)) | |
| 1063 | test)) | |
| 1064 | ||
| c113de23 | 1065 | (defun mm-inlined-p (handle) |
| 23f87bed | 1066 | "Say whether the user wants HANDLE to be displayed inline." |
| c113de23 GM |
1067 | (let ((methods mm-inlined-types) |
| 1068 | (type (mm-handle-media-type handle)) | |
| 1069 | method result) | |
| 1070 | (while (setq method (pop methods)) | |
| 1071 | (when (and (not (mm-inline-override-p handle)) | |
| 23f87bed | 1072 | (string-match method type)) |
| c113de23 GM |
1073 | (setq result t |
| 1074 | methods nil))) | |
| 1075 | result)) | |
| 1076 | ||
| 1077 | (defun mm-attachment-override-p (handle) | |
| 1078 | "Say whether HANDLE should have attachment behavior overridden." | |
| 1079 | (let ((types mm-attachment-override-types) | |
| 1080 | (type (mm-handle-media-type handle)) | |
| 1081 | ty) | |
| 1082 | (catch 'found | |
| 1083 | (while (setq ty (pop types)) | |
| 1084 | (when (and (string-match ty type) | |
| 1085 | (mm-inlinable-p handle)) | |
| 1086 | (throw 'found t)))))) | |
| 1087 | ||
| 1088 | (defun mm-inline-override-p (handle) | |
| 1089 | "Say whether HANDLE should have inline behavior overridden." | |
| 1090 | (let ((types mm-inline-override-types) | |
| 1091 | (type (mm-handle-media-type handle)) | |
| 1092 | ty) | |
| 1093 | (catch 'found | |
| 1094 | (while (setq ty (pop types)) | |
| 1095 | (when (string-match ty type) | |
| 1096 | (throw 'found t)))))) | |
| 1097 | ||
| 1098 | (defun mm-automatic-external-display-p (type) | |
| 1099 | "Return the user-defined method for TYPE." | |
| 1100 | (let ((methods mm-automatic-external-display) | |
| 1101 | method result) | |
| 1102 | (while (setq method (pop methods)) | |
| 1103 | (when (string-match method type) | |
| 1104 | (setq result t | |
| 1105 | methods nil))) | |
| 1106 | result)) | |
| 1107 | ||
| 1108 | (defun mm-destroy-part (handle) | |
| 1109 | "Destroy the data structures connected to HANDLE." | |
| 1110 | (when (listp handle) | |
| 1111 | (mm-remove-part handle) | |
| 1112 | (when (buffer-live-p (mm-handle-buffer handle)) | |
| 1113 | (kill-buffer (mm-handle-buffer handle))))) | |
| 1114 | ||
| 1115 | (defun mm-handle-displayed-p (handle) | |
| 1116 | "Say whether HANDLE is displayed or not." | |
| 1117 | (mm-handle-undisplayer handle)) | |
| 1118 | ||
| 1119 | ;;; | |
| 1120 | ;;; Functions for outputting parts | |
| 1121 | ;;; | |
| 1122 | ||
| 531bedc3 MB |
1123 | (defmacro mm-with-part (handle &rest forms) |
| 1124 | "Run FORMS in the temp buffer containing the contents of HANDLE." | |
| 1125 | `(let* ((handle ,handle) | |
| 1126 | ;; The multibyteness of the temp buffer should be turned on | |
| 1127 | ;; if inserting a multibyte string. Contrarily, the buffer's | |
| 1128 | ;; multibyteness should be off if inserting a unibyte string, | |
| 1129 | ;; especially if a string contains 8bit data. | |
| 1130 | (default-enable-multibyte-characters | |
| 1131 | (with-current-buffer (mm-handle-buffer handle) | |
| 1132 | (mm-multibyte-p)))) | |
| 1133 | (with-temp-buffer | |
| 1134 | (insert-buffer-substring (mm-handle-buffer handle)) | |
| 1135 | (mm-disable-multibyte) | |
| 1136 | (mm-decode-content-transfer-encoding | |
| 1137 | (mm-handle-encoding handle) | |
| 1138 | (mm-handle-media-type handle)) | |
| 1139 | ,@forms))) | |
| 1140 | (put 'mm-with-part 'lisp-indent-function 1) | |
| 1141 | (put 'mm-with-part 'edebug-form-spec '(body)) | |
| 1142 | ||
| 77218834 MB |
1143 | (defun mm-get-part (handle &optional no-cache) |
| 1144 | "Return the contents of HANDLE as a string. | |
| 1145 | If NO-CACHE is non-nil, cached contents of a message/external-body part | |
| 1146 | are ignored." | |
| 1147 | (if (and (not no-cache) | |
| 1148 | (equal (mm-handle-media-type handle) "message/external-body")) | |
| 531bedc3 MB |
1149 | (progn |
| 1150 | (unless (mm-handle-cache handle) | |
| 1151 | (mm-extern-cache-contents handle)) | |
| 1152 | (with-current-buffer (mm-handle-buffer (mm-handle-cache handle)) | |
| 1153 | (buffer-string))) | |
| 1154 | (mm-with-part handle | |
| 719120ef | 1155 | (buffer-string)))) |
| c113de23 | 1156 | |
| 77218834 MB |
1157 | (defun mm-insert-part (handle &optional no-cache) |
| 1158 | "Insert the contents of HANDLE in the current buffer. | |
| 1159 | If NO-CACHE is non-nil, cached contents of a message/external-body part | |
| 1160 | are ignored." | |
| 01c52d31 MB |
1161 | (let ((text (cond ((eq (mail-content-type-get (mm-handle-type handle) |
| 1162 | 'charset) | |
| 1163 | 'gnus-decoded) | |
| 1164 | (with-current-buffer (mm-handle-buffer handle) | |
| 1165 | (buffer-string))) | |
| 1166 | ((mm-multibyte-p) | |
| 1167 | (mm-string-to-multibyte (mm-get-part handle no-cache))) | |
| 1168 | (t | |
| 1169 | (mm-get-part handle no-cache))))) | |
| 1170 | (save-restriction | |
| 1171 | (widen) | |
| 1172 | (goto-char | |
| 1173 | (prog1 | |
| 1174 | (point) | |
| 1175 | (if (and (eq (get-char-property (max (point-min) (1- (point))) 'face) | |
| 1176 | 'mm-uu-extract) | |
| 1177 | (eq (get-char-property 0 'face text) 'mm-uu-extract)) | |
| 1178 | ;; Separate the extracted parts that have the same faces. | |
| 1179 | (insert "\n" text) | |
| 1180 | (insert text))))))) | |
| 23f87bed MB |
1181 | |
| 1182 | (defun mm-file-name-delete-whitespace (file-name) | |
| 1183 | "Remove all whitespace characters from FILE-NAME." | |
| 1184 | (while (string-match "\\s-+" file-name) | |
| 1185 | (setq file-name (replace-match "" t t file-name))) | |
| 1186 | file-name) | |
| 1187 | ||
| 1188 | (defun mm-file-name-trim-whitespace (file-name) | |
| 1189 | "Remove leading and trailing whitespace characters from FILE-NAME." | |
| 1190 | (when (string-match "\\`\\s-+" file-name) | |
| 1191 | (setq file-name (substring file-name (match-end 0)))) | |
| 1192 | (when (string-match "\\s-+\\'" file-name) | |
| 1193 | (setq file-name (substring file-name 0 (match-beginning 0)))) | |
| 1194 | file-name) | |
| 1195 | ||
| 1196 | (defun mm-file-name-collapse-whitespace (file-name) | |
| 1197 | "Collapse multiple whitespace characters in FILE-NAME." | |
| 1198 | (while (string-match "\\s-\\s-+" file-name) | |
| 1199 | (setq file-name (replace-match " " t t file-name))) | |
| 1200 | file-name) | |
| 1201 | ||
| 1202 | (defun mm-file-name-replace-whitespace (file-name) | |
| 1203 | "Replace whitespace characters in FILE-NAME with underscores. | |
| 1204 | Set the option `mm-file-name-replace-whitespace' to any other | |
| 1205 | string if you do not like underscores." | |
| 1206 | (let ((s (or mm-file-name-replace-whitespace "_"))) | |
| 1207 | (while (string-match "\\s-" file-name) | |
| 1208 | (setq file-name (replace-match s t t file-name)))) | |
| 1209 | file-name) | |
| 1210 | ||
| 1211 | (defun mm-file-name-delete-control (filename) | |
| 1212 | "Delete control characters from FILENAME." | |
| 1213 | (gnus-replace-in-string filename "[\x00-\x1f\x7f]" "")) | |
| 1214 | ||
| 1215 | (defun mm-file-name-delete-gotchas (filename) | |
| 1216 | "Delete shell gotchas from FILENAME." | |
| 1217 | (setq filename (gnus-replace-in-string filename "[<>|]" "")) | |
| 1218 | (gnus-replace-in-string filename "^[.-]+" "")) | |
| c113de23 | 1219 | |
| 01c52d31 MB |
1220 | (defun mm-save-part (handle &optional prompt) |
| 1221 | "Write HANDLE to a file. | |
| 1222 | PROMPT overrides the default one used to ask user for a file name." | |
| 531bedc3 MB |
1223 | (let ((filename (or (mail-content-type-get |
| 1224 | (mm-handle-disposition handle) 'filename) | |
| 1225 | (mail-content-type-get | |
| 1226 | (mm-handle-type handle) 'name))) | |
| 1227 | file) | |
| c113de23 | 1228 | (when filename |
| 23f87bed MB |
1229 | (setq filename (gnus-map-function mm-file-name-rewrite-functions |
| 1230 | (file-name-nondirectory filename)))) | |
| c113de23 | 1231 | (setq file |
| 23f87bed | 1232 | (mm-with-multibyte |
| 01c52d31 | 1233 | (read-file-name (or prompt "Save MIME part to: ") |
| 531bedc3 MB |
1234 | (or mm-default-directory default-directory) |
| 1235 | nil nil (or filename "")))) | |
| c113de23 | 1236 | (setq mm-default-directory (file-name-directory file)) |
| 23f87bed MB |
1237 | (and (or (not (file-exists-p file)) |
| 1238 | (yes-or-no-p (format "File %s already exists; overwrite? " | |
| 1239 | file))) | |
| 1240 | (progn | |
| 1241 | (mm-save-part-to-file handle file) | |
| 1242 | file)))) | |
| c113de23 | 1243 | |
| bbbe940b MB |
1244 | (defun mm-add-meta-html-tag (handle &optional charset) |
| 1245 | "Add meta html tag to specify CHARSET of HANDLE in the current buffer. | |
| 1246 | CHARSET defaults to the one HANDLE specifies. Existing meta tag that | |
| 1247 | specifies charset will not be modified. Return t if meta tag is added | |
| 1248 | or replaced." | |
| 1249 | (when (equal (mm-handle-media-type handle) "text/html") | |
| 1250 | (when (or charset | |
| 1251 | (setq charset (mail-content-type-get (mm-handle-type handle) | |
| 1252 | 'charset))) | |
| 1253 | (setq charset (format "\ | |
| 1254 | <meta http-equiv=\"Content-Type\" content=\"text/html; charset=%s\">" charset)) | |
| 1255 | (let ((case-fold-search t)) | |
| 1256 | (goto-char (point-min)) | |
| 1257 | (if (re-search-forward "\ | |
| 1258 | <meta\\s-+http-equiv=[\"']?content-type[\"']?\\s-+content=[\"']\ | |
| 1259 | text/\\(\\sw+\\)\\(?:\;\\s-*charset=\\(.+?\\)\\)?[\"'][^>]*>" nil t) | |
| 1260 | (if (and (match-beginning 2) | |
| 1261 | (string-match "\\`html\\'" (match-string 1))) | |
| 1262 | ;; Don't modify existing meta tag. | |
| 1263 | nil | |
| 1264 | ;; Replace it with the one specifying charset. | |
| 1265 | (replace-match charset) | |
| 1266 | t) | |
| 1267 | (if (re-search-forward "<head>\\s-*" nil t) | |
| 1268 | (insert charset "\n") | |
| 1269 | (re-search-forward "<html\\(?:\\s-+[^>]+\\|\\s-*\\)>\\s-*" nil t) | |
| 1270 | (insert "<head>\n" charset "\n</head>\n")) | |
| 1271 | t))))) | |
| 1272 | ||
| c113de23 GM |
1273 | (defun mm-save-part-to-file (handle file) |
| 1274 | (mm-with-unibyte-buffer | |
| 1275 | (mm-insert-part handle) | |
| bbbe940b | 1276 | (mm-add-meta-html-tag handle) |
| 01c52d31 MB |
1277 | (let ((current-file-modes (default-file-modes))) |
| 1278 | (set-default-file-modes mm-attachment-file-modes) | |
| 1279 | (unwind-protect | |
| c113de23 GM |
1280 | ;; Don't re-compress .gz & al. Arguably we should make |
| 1281 | ;; `file-name-handler-alist' nil, but that would chop | |
| 1282 | ;; ange-ftp, which is reasonable to use here. | |
| 01c52d31 | 1283 | (mm-write-region (point-min) (point-max) file nil nil nil 'binary t) |
| 23f87bed | 1284 | (set-default-file-modes current-file-modes))))) |
| c113de23 GM |
1285 | |
| 1286 | (defun mm-pipe-part (handle) | |
| 1287 | "Pipe HANDLE to a process." | |
| 1288 | (let* ((name (mail-content-type-get (mm-handle-type handle) 'name)) | |
| 1289 | (command | |
| 1290 | (read-string "Shell command on MIME part: " mm-last-shell-command))) | |
| 1291 | (mm-with-unibyte-buffer | |
| 1292 | (mm-insert-part handle) | |
| bbbe940b | 1293 | (mm-add-meta-html-tag handle) |
| 23f87bed MB |
1294 | (let ((coding-system-for-write 'binary)) |
| 1295 | (shell-command-on-region (point-min) (point-max) command nil))))) | |
| c113de23 GM |
1296 | |
| 1297 | (defun mm-interactively-view-part (handle) | |
| 1298 | "Display HANDLE using METHOD." | |
| 1299 | (let* ((type (mm-handle-media-type handle)) | |
| 1300 | (methods | |
| 1301 | (mapcar (lambda (i) (list (cdr (assoc 'viewer i)))) | |
| 1302 | (mailcap-mime-info type 'all))) | |
| 62a27ccf DL |
1303 | (method (let ((minibuffer-local-completion-map |
| 1304 | mm-viewer-completion-map)) | |
| 1305 | (completing-read "Viewer: " methods)))) | |
| c113de23 GM |
1306 | (when (string= method "") |
| 1307 | (error "No method given")) | |
| 5bb548d2 | 1308 | (if (string-match "^[^% \t]+$" method) |
| c113de23 | 1309 | (setq method (concat method " %s"))) |
| 619ac84f | 1310 | (mm-display-external handle method))) |
| c113de23 GM |
1311 | |
| 1312 | (defun mm-preferred-alternative (handles &optional preferred) | |
| 1313 | "Say which of HANDLES are preferred." | |
| 1314 | (let ((prec (if preferred (list preferred) | |
| 1315 | (mm-preferred-alternative-precedence handles))) | |
| 1316 | p h result type handle) | |
| 1317 | (while (setq p (pop prec)) | |
| 1318 | (setq h handles) | |
| 1319 | (while h | |
| 1320 | (setq handle (car h)) | |
| 1321 | (setq type (mm-handle-media-type handle)) | |
| 1322 | (when (and (equal p type) | |
| 1323 | (mm-automatic-display-p handle) | |
| 1324 | (or (stringp (car handle)) | |
| 1325 | (not (mm-handle-disposition handle)) | |
| 1326 | (equal (car (mm-handle-disposition handle)) | |
| 1327 | "inline"))) | |
| 1328 | (setq result handle | |
| 1329 | h nil | |
| 1330 | prec nil)) | |
| 1331 | (pop h))) | |
| 1332 | result)) | |
| 1333 | ||
| 1334 | (defun mm-preferred-alternative-precedence (handles) | |
| 1335 | "Return the precedence based on HANDLES and `mm-discouraged-alternatives'." | |
| 1336 | (let ((seq (nreverse (mapcar #'mm-handle-media-type | |
| 1337 | handles)))) | |
| 1338 | (dolist (disc (reverse mm-discouraged-alternatives)) | |
| 1339 | (dolist (elem (copy-sequence seq)) | |
| 1340 | (when (string-match disc elem) | |
| 1341 | (setq seq (nconc (delete elem seq) (list elem)))))) | |
| 1342 | seq)) | |
| 1343 | ||
| 1344 | (defun mm-get-content-id (id) | |
| 1345 | "Return the handle(s) referred to by ID." | |
| 1346 | (cdr (assoc id mm-content-id-alist))) | |
| 1347 | ||
| 23f87bed MB |
1348 | (defconst mm-image-type-regexps |
| 1349 | '(("/\\*.*XPM.\\*/" . xpm) | |
| 1350 | ("P[1-6]" . pbm) | |
| 1351 | ("GIF8" . gif) | |
| 1352 | ("\377\330" . jpeg) | |
| 1353 | ("\211PNG\r\n" . png) | |
| 1354 | ("#define" . xbm) | |
| 1355 | ("\\(MM\0\\*\\)\\|\\(II\\*\0\\)" . tiff) | |
| 1356 | ("%!PS" . postscript)) | |
| 1357 | "Alist of (REGEXP . IMAGE-TYPE) pairs used to auto-detect image types. | |
| 1358 | When the first bytes of an image file match REGEXP, it is assumed to | |
| 1359 | be of image type IMAGE-TYPE.") | |
| 1360 | ||
| 1361 | ;; Steal from image.el. image-type-from-data suffers multi-line matching bug. | |
| 1362 | (defun mm-image-type-from-buffer () | |
| 1363 | "Determine the image type from data in the current buffer. | |
| 1364 | Value is a symbol specifying the image type or nil if type cannot | |
| 1365 | be determined." | |
| 1366 | (let ((types mm-image-type-regexps) | |
| 1367 | type) | |
| 1368 | (goto-char (point-min)) | |
| 1369 | (while (and types (null type)) | |
| 1370 | (let ((regexp (car (car types))) | |
| 1371 | (image-type (cdr (car types)))) | |
| 1372 | (when (looking-at regexp) | |
| 1373 | (setq type image-type)) | |
| 1374 | (setq types (cdr types)))) | |
| 1375 | type)) | |
| 1376 | ||
| c113de23 GM |
1377 | (defun mm-get-image (handle) |
| 1378 | "Return an image instance based on HANDLE." | |
| 1379 | (let ((type (mm-handle-media-subtype handle)) | |
| 1380 | spec) | |
| 1381 | ;; Allow some common translations. | |
| 1382 | (setq type | |
| 1383 | (cond | |
| 1384 | ((equal type "x-pixmap") | |
| 1385 | "xpm") | |
| 1386 | ((equal type "x-xbitmap") | |
| 1387 | "xbm") | |
| 5bb548d2 DL |
1388 | ((equal type "x-portable-bitmap") |
| 1389 | "pbm") | |
| c113de23 GM |
1390 | (t type))) |
| 1391 | (or (mm-handle-cache handle) | |
| 1392 | (mm-with-unibyte-buffer | |
| 1393 | (mm-insert-part handle) | |
| 1394 | (prog1 | |
| 1395 | (setq spec | |
| 1396 | (ignore-errors | |
| 23f87bed MB |
1397 | ;; Avoid testing `make-glyph' since W3 may define |
| 1398 | ;; a bogus version of it. | |
| c113de23 | 1399 | (if (fboundp 'create-image) |
| 23f87bed MB |
1400 | (create-image (buffer-string) |
| 1401 | (or (mm-image-type-from-buffer) | |
| 1402 | (intern type)) | |
| 1403 | 'data-p) | |
| 1404 | (mm-create-image-xemacs type)))) | |
| c113de23 GM |
1405 | (mm-handle-set-cache handle spec)))))) |
| 1406 | ||
| 23f87bed | 1407 | (defun mm-create-image-xemacs (type) |
| 9efa445f DN |
1408 | (when (featurep 'xemacs) |
| 1409 | (cond | |
| 1410 | ((equal type "xbm") | |
| 1411 | ;; xbm images require special handling, since | |
| 1412 | ;; the only way to create glyphs from these | |
| 1413 | ;; (without a ton of work) is to write them | |
| 1414 | ;; out to a file, and then create a file | |
| 1415 | ;; specifier. | |
| 1416 | (let ((file (mm-make-temp-file | |
| 1417 | (expand-file-name "emm" mm-tmp-directory) | |
| 1418 | nil ".xbm"))) | |
| 1419 | (unwind-protect | |
| 1420 | (progn | |
| 1421 | (write-region (point-min) (point-max) file) | |
| 1422 | (make-glyph (list (cons 'x file)))) | |
| 1423 | (ignore-errors | |
| 1424 | (delete-file file))))) | |
| 1425 | (t | |
| 1426 | (make-glyph | |
| 1427 | (vector | |
| 1428 | (or (mm-image-type-from-buffer) | |
| 1429 | (intern type)) | |
| 1430 | :data (buffer-string))))))) | |
| 23f87bed | 1431 | |
| c113de23 GM |
1432 | (defun mm-image-fit-p (handle) |
| 1433 | "Say whether the image in HANDLE will fit the current window." | |
| 1434 | (let ((image (mm-get-image handle))) | |
| 524705ae | 1435 | (or (not image) |
| 9efa445f | 1436 | (if (featurep 'xemacs) |
| 524705ae MB |
1437 | ;; XEmacs' glyphs can actually tell us about their width, so |
| 1438 | ;; lets be nice and smart about them. | |
| 1439 | (or mm-inline-large-images | |
| 1440 | (and (<= (glyph-width image) (window-pixel-width)) | |
| 1441 | (<= (glyph-height image) (window-pixel-height)))) | |
| 1442 | (let* ((size (image-size image)) | |
| 1443 | (w (car size)) | |
| 1444 | (h (cdr size))) | |
| 1445 | (or mm-inline-large-images | |
| 1446 | (and (<= h (1- (window-height))) ; Don't include mode line. | |
| 1447 | (<= w (window-width))))))))) | |
| c113de23 GM |
1448 | |
| 1449 | (defun mm-valid-image-format-p (format) | |
| 1450 | "Say whether FORMAT can be displayed natively by Emacs." | |
| 1451 | (cond | |
| 1452 | ;; Handle XEmacs | |
| 1453 | ((fboundp 'valid-image-instantiator-format-p) | |
| 1454 | (valid-image-instantiator-format-p format)) | |
| 1455 | ;; Handle Emacs 21 | |
| 1456 | ((fboundp 'image-type-available-p) | |
| 1457 | (and (display-graphic-p) | |
| 1458 | (image-type-available-p format))) | |
| 1459 | ;; Nobody else can do images yet. | |
| 1460 | (t | |
| 1461 | nil))) | |
| 1462 | ||
| 1463 | (defun mm-valid-and-fit-image-p (format handle) | |
| 1464 | "Say whether FORMAT can be displayed natively and HANDLE fits the window." | |
| 62a27ccf | 1465 | (and (mm-valid-image-format-p format) |
| c113de23 GM |
1466 | (mm-image-fit-p handle))) |
| 1467 | ||
| 23f87bed MB |
1468 | (defun mm-find-part-by-type (handles type &optional notp recursive) |
| 1469 | "Search in HANDLES for part with TYPE. | |
| 1470 | If NOTP, returns first non-matching part. | |
| 1471 | If RECURSIVE, search recursively." | |
| 1472 | (let (handle) | |
| 1473 | (while handles | |
| 1474 | (if (and recursive (stringp (caar handles))) | |
| 1475 | (if (setq handle (mm-find-part-by-type (cdar handles) type | |
| 1476 | notp recursive)) | |
| 1477 | (setq handles nil)) | |
| 1478 | (if (if notp | |
| 1479 | (not (equal (mm-handle-media-type (car handles)) type)) | |
| 1480 | (equal (mm-handle-media-type (car handles)) type)) | |
| 1481 | (setq handle (car handles) | |
| 1482 | handles nil))) | |
| 1483 | (setq handles (cdr handles))) | |
| 1484 | handle)) | |
| 1485 | ||
| 1486 | (defun mm-find-raw-part-by-type (ctl type &optional notp) | |
| 1487 | (goto-char (point-min)) | |
| 1488 | (let* ((boundary (concat "--" (mm-handle-multipart-ctl-parameter ctl | |
| 1489 | 'boundary))) | |
| 1490 | (close-delimiter (concat "^" (regexp-quote boundary) "--[ \t]*$")) | |
| 1491 | start | |
| 1492 | (end (save-excursion | |
| 1493 | (goto-char (point-max)) | |
| 1494 | (if (re-search-backward close-delimiter nil t) | |
| 1495 | (match-beginning 0) | |
| 1496 | (point-max)))) | |
| 1497 | result) | |
| 1498 | (setq boundary (concat "^" (regexp-quote boundary) "[ \t]*$")) | |
| 1499 | (while (and (not result) | |
| 1500 | (re-search-forward boundary end t)) | |
| 1501 | (goto-char (match-beginning 0)) | |
| 1502 | (when start | |
| 1503 | (save-excursion | |
| 1504 | (save-restriction | |
| 1505 | (narrow-to-region start (1- (point))) | |
| c96ec15a MB |
1506 | (when (let* ((ct (mail-fetch-field "content-type")) |
| 1507 | (ctl (and ct (mail-header-parse-content-type ct)))) | |
| 23f87bed MB |
1508 | (if notp |
| 1509 | (not (equal (car ctl) type)) | |
| 1510 | (equal (car ctl) type))) | |
| 1511 | (setq result (buffer-string)))))) | |
| 1512 | (forward-line 1) | |
| 1513 | (setq start (point))) | |
| 1514 | (when (and (not result) start) | |
| 1515 | (save-excursion | |
| 1516 | (save-restriction | |
| 1517 | (narrow-to-region start end) | |
| c96ec15a MB |
1518 | (when (let* ((ct (mail-fetch-field "content-type")) |
| 1519 | (ctl (and ct (mail-header-parse-content-type ct)))) | |
| 23f87bed MB |
1520 | (if notp |
| 1521 | (not (equal (car ctl) type)) | |
| 1522 | (equal (car ctl) type))) | |
| 1523 | (setq result (buffer-string)))))) | |
| 1524 | result)) | |
| 1525 | ||
| 1526 | (defvar mm-security-handle nil) | |
| 1527 | ||
| 1528 | (defsubst mm-set-handle-multipart-parameter (handle parameter value) | |
| 1529 | ;; HANDLE could be a CTL. | |
| 1530 | (when handle | |
| 1531 | (put-text-property 0 (length (car handle)) parameter value | |
| 1532 | (car handle)))) | |
| 1533 | ||
| 60ef4154 GM |
1534 | (autoload 'mm-view-pkcs7 "mm-view") |
| 1535 | ||
| 23f87bed MB |
1536 | (defun mm-possibly-verify-or-decrypt (parts ctl) |
| 1537 | (let ((type (car ctl)) | |
| 1538 | (subtype (cadr (split-string (car ctl) "/"))) | |
| 1539 | (mm-security-handle ctl) ;; (car CTL) is the type. | |
| 1540 | protocol func functest) | |
| 1541 | (cond | |
| 1542 | ((or (equal type "application/x-pkcs7-mime") | |
| 1543 | (equal type "application/pkcs7-mime")) | |
| 1544 | (with-temp-buffer | |
| 1545 | (when (and (cond | |
| 1546 | ((eq mm-decrypt-option 'never) nil) | |
| 1547 | ((eq mm-decrypt-option 'always) t) | |
| 1548 | ((eq mm-decrypt-option 'known) t) | |
| 1549 | (t (y-or-n-p | |
| 1550 | (format "Decrypt (S/MIME) part? ")))) | |
| 1551 | (mm-view-pkcs7 parts)) | |
| 1552 | (setq parts (mm-dissect-buffer t))))) | |
| 1553 | ((equal subtype "signed") | |
| 1554 | (unless (and (setq protocol | |
| 1555 | (mm-handle-multipart-ctl-parameter ctl 'protocol)) | |
| 1556 | (not (equal protocol "multipart/mixed"))) | |
| 1557 | ;; The message is broken or draft-ietf-openpgp-multsig-01. | |
| 1558 | (let ((protocols mm-verify-function-alist)) | |
| 1559 | (while protocols | |
| 1560 | (if (and (or (not (setq functest (nth 3 (car protocols)))) | |
| 1561 | (funcall functest parts ctl)) | |
| 1562 | (mm-find-part-by-type parts (caar protocols) nil t)) | |
| 1563 | (setq protocol (caar protocols) | |
| 1564 | protocols nil) | |
| 1565 | (setq protocols (cdr protocols)))))) | |
| 1566 | (setq func (nth 1 (assoc protocol mm-verify-function-alist))) | |
| 1567 | (when (cond | |
| 1568 | ((eq mm-verify-option 'never) nil) | |
| 1569 | ((eq mm-verify-option 'always) t) | |
| 1570 | ((eq mm-verify-option 'known) | |
| 1571 | (and func | |
| 1572 | (or (not (setq functest | |
| 1573 | (nth 3 (assoc protocol | |
| 1574 | mm-verify-function-alist)))) | |
| 1575 | (funcall functest parts ctl)))) | |
| 1576 | (t | |
| 1577 | (y-or-n-p | |
| 1578 | (format "Verify signed (%s) part? " | |
| 1579 | (or (nth 2 (assoc protocol mm-verify-function-alist)) | |
| 1580 | (format "protocol=%s" protocol)))))) | |
| 1581 | (save-excursion | |
| 1582 | (if func | |
| 01c52d31 | 1583 | (setq parts (funcall func parts ctl)) |
| 23f87bed MB |
1584 | (mm-set-handle-multipart-parameter |
| 1585 | mm-security-handle 'gnus-details | |
| 1586 | (format "Unknown sign protocol (%s)" protocol)))))) | |
| 1587 | ((equal subtype "encrypted") | |
| 1588 | (unless (setq protocol | |
| 1589 | (mm-handle-multipart-ctl-parameter ctl 'protocol)) | |
| 1590 | ;; The message is broken. | |
| 1591 | (let ((parts parts)) | |
| 1592 | (while parts | |
| 1593 | (if (assoc (mm-handle-media-type (car parts)) | |
| 1594 | mm-decrypt-function-alist) | |
| 1595 | (setq protocol (mm-handle-media-type (car parts)) | |
| 1596 | parts nil) | |
| 1597 | (setq parts (cdr parts)))))) | |
| 1598 | (setq func (nth 1 (assoc protocol mm-decrypt-function-alist))) | |
| 1599 | (when (cond | |
| 1600 | ((eq mm-decrypt-option 'never) nil) | |
| 1601 | ((eq mm-decrypt-option 'always) t) | |
| 1602 | ((eq mm-decrypt-option 'known) | |
| 1603 | (and func | |
| 1604 | (or (not (setq functest | |
| 1605 | (nth 3 (assoc protocol | |
| 1606 | mm-decrypt-function-alist)))) | |
| 1607 | (funcall functest parts ctl)))) | |
| 1608 | (t | |
| 1609 | (y-or-n-p | |
| 1610 | (format "Decrypt (%s) part? " | |
| 1611 | (or (nth 2 (assoc protocol mm-decrypt-function-alist)) | |
| 1612 | (format "protocol=%s" protocol)))))) | |
| 1613 | (save-excursion | |
| 1614 | (if func | |
| 1615 | (setq parts (funcall func parts ctl)) | |
| 1616 | (mm-set-handle-multipart-parameter | |
| 1617 | mm-security-handle 'gnus-details | |
| 1618 | (format "Unknown encrypt protocol (%s)" protocol)))))) | |
| 1619 | (t nil)) | |
| 1620 | parts)) | |
| 1621 | ||
| 1622 | (defun mm-multiple-handles (handles) | |
| 1623 | (and (listp handles) | |
| 1624 | (> (length handles) 1) | |
| 1625 | (or (listp (car handles)) | |
| 1626 | (stringp (car handles))))) | |
| 1627 | ||
| 1628 | (defun mm-complicated-handles (handles) | |
| 1629 | (and (listp (car handles)) | |
| 1630 | (> (length handles) 1))) | |
| 1631 | ||
| 1632 | (defun mm-merge-handles (handles1 handles2) | |
| 1633 | (append | |
| 1634 | (if (listp (car handles1)) | |
| 1635 | handles1 | |
| 1636 | (list handles1)) | |
| 1637 | (if (listp (car handles2)) | |
| 1638 | handles2 | |
| 1639 | (list handles2)))) | |
| 1640 | ||
| 1641 | (defun mm-readable-p (handle) | |
| 1642 | "Say whether the content of HANDLE is readable." | |
| 1643 | (and (< (with-current-buffer (mm-handle-buffer handle) | |
| 1644 | (buffer-size)) 10000) | |
| 1645 | (mm-with-unibyte-buffer | |
| 1646 | (mm-insert-part handle) | |
| 1647 | (and (eq (mm-body-7-or-8) '7bit) | |
| 1648 | (not (mm-long-lines-p 76)))))) | |
| 1649 | ||
| c113de23 GM |
1650 | (provide 'mm-decode) |
| 1651 | ||
| 46cdaf24 | 1652 | ;; arch-tag: 4f35d360-56b8-4030-9388-3ed82d359b9b |
| c113de23 | 1653 | ;;; mm-decode.el ends here |