| 1 | ;;; mml.el --- A package for parsing and validating MML documents |
| 2 | |
| 3 | ;; Copyright (C) 1998-2012 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> |
| 6 | ;; This file is part of GNU Emacs. |
| 7 | |
| 8 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| 9 | ;; it under the terms of the GNU General Public License as published by |
| 10 | ;; the Free Software Foundation, either version 3 of the License, or |
| 11 | ;; (at your option) any later version. |
| 12 | |
| 13 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 14 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | ;; GNU General Public License for more details. |
| 17 | |
| 18 | ;; You should have received a copy of the GNU General Public License |
| 19 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 20 | |
| 21 | ;;; Commentary: |
| 22 | |
| 23 | ;;; Code: |
| 24 | |
| 25 | ;; For Emacs <22.2 and XEmacs. |
| 26 | (eval-and-compile |
| 27 | (unless (fboundp 'declare-function) (defmacro declare-function (&rest r)))) |
| 28 | |
| 29 | (require 'mm-util) |
| 30 | (require 'mm-bodies) |
| 31 | (require 'mm-encode) |
| 32 | (require 'mm-decode) |
| 33 | (require 'mml-sec) |
| 34 | (eval-when-compile (require 'cl)) |
| 35 | (eval-when-compile |
| 36 | (when (featurep 'xemacs) |
| 37 | (require 'easy-mmode))) ; for `define-minor-mode' |
| 38 | |
| 39 | (autoload 'message-make-message-id "message") |
| 40 | (declare-function gnus-setup-posting-charset "gnus-msg" (group)) |
| 41 | (autoload 'gnus-make-local-hook "gnus-util") |
| 42 | (autoload 'gnus-completing-read "gnus-util") |
| 43 | (autoload 'message-fetch-field "message") |
| 44 | (autoload 'message-mark-active-p "message") |
| 45 | (autoload 'message-info "message") |
| 46 | (autoload 'fill-flowed-encode "flow-fill") |
| 47 | (autoload 'message-posting-charset "message") |
| 48 | (autoload 'dnd-get-local-file-name "dnd") |
| 49 | |
| 50 | (autoload 'message-options-set "message") |
| 51 | (autoload 'message-narrow-to-head "message") |
| 52 | (autoload 'message-in-body-p "message") |
| 53 | (autoload 'message-mail-p "message") |
| 54 | |
| 55 | (defvar gnus-article-mime-handles) |
| 56 | (defvar gnus-mouse-2) |
| 57 | (defvar gnus-newsrc-hashtb) |
| 58 | (defvar message-default-charset) |
| 59 | (defvar message-deletable-headers) |
| 60 | (defvar message-options) |
| 61 | (defvar message-posting-charset) |
| 62 | (defvar message-required-mail-headers) |
| 63 | (defvar message-required-news-headers) |
| 64 | (defvar dnd-protocol-alist) |
| 65 | (defvar mml-dnd-protocol-alist) |
| 66 | |
| 67 | (defcustom mml-content-type-parameters |
| 68 | '(name access-type expiration size permission format) |
| 69 | "*A list of acceptable parameters in MML tag. |
| 70 | These parameters are generated in Content-Type header if exists." |
| 71 | :version "22.1" |
| 72 | :type '(repeat (symbol :tag "Parameter")) |
| 73 | :group 'message) |
| 74 | |
| 75 | (defcustom mml-content-disposition-parameters |
| 76 | '(filename creation-date modification-date read-date) |
| 77 | "*A list of acceptable parameters in MML tag. |
| 78 | These parameters are generated in Content-Disposition header if exists." |
| 79 | :version "22.1" |
| 80 | :type '(repeat (symbol :tag "Parameter")) |
| 81 | :group 'message) |
| 82 | |
| 83 | (defcustom mml-content-disposition-alist |
| 84 | '((text (rtf . "attachment") (t . "inline")) |
| 85 | (t . "attachment")) |
| 86 | "Alist of MIME types or regexps matching file names and default dispositions. |
| 87 | Each element should be one of the following three forms: |
| 88 | |
| 89 | (REGEXP . DISPOSITION) |
| 90 | (SUPERTYPE (SUBTYPE . DISPOSITION) (SUBTYPE . DISPOSITION)...) |
| 91 | (TYPE . DISPOSITION) |
| 92 | |
| 93 | Where REGEXP is a string which matches the file name (if any) of an |
| 94 | attachment, SUPERTYPE, SUBTYPE and TYPE should be symbols which are a |
| 95 | MIME supertype (e.g., text), a MIME subtype (e.g., plain) and a MIME |
| 96 | type (e.g., text/plain) respectively, and DISPOSITION should be either |
| 97 | the string \"attachment\" or the string \"inline\". The value t for |
| 98 | SUPERTYPE, SUBTYPE or TYPE matches any of those types. The first |
| 99 | match found will be used." |
| 100 | :version "23.1" ;; No Gnus |
| 101 | :type (let ((dispositions '(radio :format "DISPOSITION: %v" |
| 102 | :value "attachment" |
| 103 | (const :format "%v " "attachment") |
| 104 | (const :format "%v\n" "inline")))) |
| 105 | `(repeat |
| 106 | :offset 0 |
| 107 | (choice :format "%[Value Menu%]%v" |
| 108 | (cons :tag "(REGEXP . DISPOSITION)" :extra-offset 4 |
| 109 | (regexp :tag "REGEXP" :value ".*") |
| 110 | ,dispositions) |
| 111 | (cons :tag "(SUPERTYPE (SUBTYPE . DISPOSITION)...)" |
| 112 | :indent 0 |
| 113 | (symbol :tag " SUPERTYPE" :value text) |
| 114 | (repeat :format "%v%i\n" :offset 0 :extra-offset 4 |
| 115 | (cons :format "%v" :extra-offset 5 |
| 116 | (symbol :tag "SUBTYPE" :value t) |
| 117 | ,dispositions))) |
| 118 | (cons :tag "(TYPE . DISPOSITION)" :extra-offset 4 |
| 119 | (symbol :tag "TYPE" :value t) |
| 120 | ,dispositions)))) |
| 121 | :group 'message) |
| 122 | |
| 123 | (defcustom mml-insert-mime-headers-always t |
| 124 | "If non-nil, always put Content-Type: text/plain at top of empty parts. |
| 125 | It is necessary to work against a bug in certain clients." |
| 126 | :version "24.1" |
| 127 | :type 'boolean |
| 128 | :group 'message) |
| 129 | |
| 130 | (defcustom mml-enable-flowed t |
| 131 | "If non-nil, enable format=flowed usage when encoding a message. |
| 132 | This is only performed when filling on text/plain with hard |
| 133 | newlines in the text." |
| 134 | :version "24.1" |
| 135 | :type 'boolean |
| 136 | :group 'message) |
| 137 | |
| 138 | (defvar mml-tweak-type-alist nil |
| 139 | "A list of (TYPE . FUNCTION) for tweaking MML parts. |
| 140 | TYPE is a string containing a regexp to match the MIME type. FUNCTION |
| 141 | is a Lisp function which is called with the MML handle to tweak the |
| 142 | part. This variable is used only when no TWEAK parameter exists in |
| 143 | the MML handle.") |
| 144 | |
| 145 | (defvar mml-tweak-function-alist nil |
| 146 | "A list of (NAME . FUNCTION) for tweaking MML parts. |
| 147 | NAME is a string containing the name of the TWEAK parameter in the MML |
| 148 | handle. FUNCTION is a Lisp function which is called with the MML |
| 149 | handle to tweak the part.") |
| 150 | |
| 151 | (defvar mml-tweak-sexp-alist |
| 152 | '((mml-externalize-attachments . mml-tweak-externalize-attachments)) |
| 153 | "A list of (SEXP . FUNCTION) for tweaking MML parts. |
| 154 | SEXP is an s-expression. If the evaluation of SEXP is non-nil, FUNCTION |
| 155 | is called. FUNCTION is a Lisp function which is called with the MML |
| 156 | handle to tweak the part.") |
| 157 | |
| 158 | (defvar mml-externalize-attachments nil |
| 159 | "*If non-nil, local-file attachments are generated as external parts.") |
| 160 | |
| 161 | (defvar mml-generate-multipart-alist nil |
| 162 | "*Alist of multipart generation functions. |
| 163 | Each entry has the form (NAME . FUNCTION), where |
| 164 | NAME is a string containing the name of the part (without the |
| 165 | leading \"/multipart/\"), |
| 166 | FUNCTION is a Lisp function which is called to generate the part. |
| 167 | |
| 168 | The Lisp function has to supply the appropriate MIME headers and the |
| 169 | contents of this part.") |
| 170 | |
| 171 | (defvar mml-syntax-table |
| 172 | (let ((table (copy-syntax-table emacs-lisp-mode-syntax-table))) |
| 173 | (modify-syntax-entry ?\\ "/" table) |
| 174 | (modify-syntax-entry ?< "(" table) |
| 175 | (modify-syntax-entry ?> ")" table) |
| 176 | (modify-syntax-entry ?@ "w" table) |
| 177 | (modify-syntax-entry ?/ "w" table) |
| 178 | (modify-syntax-entry ?= " " table) |
| 179 | (modify-syntax-entry ?* " " table) |
| 180 | (modify-syntax-entry ?\; " " table) |
| 181 | (modify-syntax-entry ?\' " " table) |
| 182 | table)) |
| 183 | |
| 184 | (defvar mml-boundary-function 'mml-make-boundary |
| 185 | "A function called to suggest a boundary. |
| 186 | The function may be called several times, and should try to make a new |
| 187 | suggestion each time. The function is called with one parameter, |
| 188 | which is a number that says how many times the function has been |
| 189 | called for this message.") |
| 190 | |
| 191 | (defvar mml-confirmation-set nil |
| 192 | "A list of symbols, each of which disables some warning. |
| 193 | `unknown-encoding': always send messages contain characters with |
| 194 | unknown encoding; `use-ascii': always use ASCII for those characters |
| 195 | with unknown encoding; `multipart': always send messages with more than |
| 196 | one charsets.") |
| 197 | |
| 198 | (defvar mml-generate-default-type "text/plain" |
| 199 | "Content type by which the Content-Type header can be omitted. |
| 200 | The Content-Type header will not be put in the MIME part if the type |
| 201 | equals the value and there's no parameter (e.g. charset, format, etc.) |
| 202 | and `mml-insert-mime-headers-always' is nil. The value will be bound |
| 203 | to \"message/rfc822\" when encoding an article to be forwarded as a MIME |
| 204 | part. This is for the internal use, you should never modify the value.") |
| 205 | |
| 206 | (defvar mml-buffer-list nil) |
| 207 | |
| 208 | (defun mml-generate-new-buffer (name) |
| 209 | (let ((buf (generate-new-buffer name))) |
| 210 | (push buf mml-buffer-list) |
| 211 | buf)) |
| 212 | |
| 213 | (defun mml-destroy-buffers () |
| 214 | (let (kill-buffer-hook) |
| 215 | (mapc 'kill-buffer mml-buffer-list) |
| 216 | (setq mml-buffer-list nil))) |
| 217 | |
| 218 | (defun mml-parse () |
| 219 | "Parse the current buffer as an MML document." |
| 220 | (save-excursion |
| 221 | (goto-char (point-min)) |
| 222 | (with-syntax-table mml-syntax-table |
| 223 | (mml-parse-1)))) |
| 224 | |
| 225 | (defun mml-parse-1 () |
| 226 | "Parse the current buffer as an MML document." |
| 227 | (let (struct tag point contents charsets warn use-ascii no-markup-p raw) |
| 228 | (while (and (not (eobp)) |
| 229 | (not (looking-at "<#/multipart"))) |
| 230 | (cond |
| 231 | ((looking-at "<#secure") |
| 232 | ;; The secure part is essentially a meta-meta tag, which |
| 233 | ;; expands to either a part tag if there are no other parts in |
| 234 | ;; the document or a multipart tag if there are other parts |
| 235 | ;; included in the message |
| 236 | (let* (secure-mode |
| 237 | (taginfo (mml-read-tag)) |
| 238 | (keyfile (cdr (assq 'keyfile taginfo))) |
| 239 | (certfiles (delq nil (mapcar (lambda (tag) |
| 240 | (if (eq (car-safe tag) 'certfile) |
| 241 | (cdr tag))) |
| 242 | taginfo))) |
| 243 | (recipients (cdr (assq 'recipients taginfo))) |
| 244 | (sender (cdr (assq 'sender taginfo))) |
| 245 | (location (cdr (assq 'tag-location taginfo))) |
| 246 | (mode (cdr (assq 'mode taginfo))) |
| 247 | (method (cdr (assq 'method taginfo))) |
| 248 | tags) |
| 249 | (save-excursion |
| 250 | (if (re-search-forward |
| 251 | "<#/?\\(multipart\\|part\\|external\\|mml\\)." nil t) |
| 252 | (setq secure-mode "multipart") |
| 253 | (setq secure-mode "part"))) |
| 254 | (save-excursion |
| 255 | (goto-char location) |
| 256 | (re-search-forward "<#secure[^\n]*>\n")) |
| 257 | (delete-region (match-beginning 0) (match-end 0)) |
| 258 | (cond ((string= mode "sign") |
| 259 | (setq tags (list "sign" method))) |
| 260 | ((string= mode "encrypt") |
| 261 | (setq tags (list "encrypt" method))) |
| 262 | ((string= mode "signencrypt") |
| 263 | (setq tags (list "sign" method "encrypt" method)))) |
| 264 | (eval `(mml-insert-tag ,secure-mode |
| 265 | ,@tags |
| 266 | ,(if keyfile "keyfile") |
| 267 | ,keyfile |
| 268 | ,@(apply #'append |
| 269 | (mapcar (lambda (certfile) |
| 270 | (list "certfile" certfile)) |
| 271 | certfiles)) |
| 272 | ,(if recipients "recipients") |
| 273 | ,recipients |
| 274 | ,(if sender "sender") |
| 275 | ,sender)) |
| 276 | ;; restart the parse |
| 277 | (goto-char location))) |
| 278 | ((looking-at "<#multipart") |
| 279 | (push (nconc (mml-read-tag) (mml-parse-1)) struct)) |
| 280 | ((looking-at "<#external") |
| 281 | (push (nconc (mml-read-tag) (list (cons 'contents (mml-read-part)))) |
| 282 | struct)) |
| 283 | (t |
| 284 | (if (or (looking-at "<#part") (looking-at "<#mml")) |
| 285 | (setq tag (mml-read-tag) |
| 286 | no-markup-p nil |
| 287 | warn nil) |
| 288 | (setq tag (list 'part '(type . "text/plain")) |
| 289 | no-markup-p t |
| 290 | warn t)) |
| 291 | (setq raw (cdr (assq 'raw tag)) |
| 292 | point (point) |
| 293 | contents (mml-read-part (eq 'mml (car tag))) |
| 294 | charsets (cond |
| 295 | (raw nil) |
| 296 | ((assq 'charset tag) |
| 297 | (list |
| 298 | (intern (downcase (cdr (assq 'charset tag)))))) |
| 299 | (t |
| 300 | (mm-find-mime-charset-region point (point) |
| 301 | mm-hack-charsets)))) |
| 302 | (when (and (not raw) (memq nil charsets)) |
| 303 | (if (or (memq 'unknown-encoding mml-confirmation-set) |
| 304 | (message-options-get 'unknown-encoding) |
| 305 | (and (y-or-n-p "\ |
| 306 | Message contains characters with unknown encoding. Really send? ") |
| 307 | (message-options-set 'unknown-encoding t))) |
| 308 | (if (setq use-ascii |
| 309 | (or (memq 'use-ascii mml-confirmation-set) |
| 310 | (message-options-get 'use-ascii) |
| 311 | (and (y-or-n-p "Use ASCII as charset? ") |
| 312 | (message-options-set 'use-ascii t)))) |
| 313 | (setq charsets (delq nil charsets)) |
| 314 | (setq warn nil)) |
| 315 | (error "Edit your message to remove those characters"))) |
| 316 | (if (or raw |
| 317 | (eq 'mml (car tag)) |
| 318 | (< (length charsets) 2)) |
| 319 | (if (or (not no-markup-p) |
| 320 | (string-match "[^ \t\r\n]" contents)) |
| 321 | ;; Don't create blank parts. |
| 322 | (push (nconc tag (list (cons 'contents contents))) |
| 323 | struct)) |
| 324 | (let ((nstruct (mml-parse-singlepart-with-multiple-charsets |
| 325 | tag point (point) use-ascii))) |
| 326 | (when (and warn |
| 327 | (not (memq 'multipart mml-confirmation-set)) |
| 328 | (not (message-options-get 'multipart)) |
| 329 | (not (and (y-or-n-p (format "\ |
| 330 | A message part needs to be split into %d charset parts. Really send? " |
| 331 | (length nstruct))) |
| 332 | (message-options-set 'multipart t)))) |
| 333 | (error "Edit your message to use only one charset")) |
| 334 | (setq struct (nconc nstruct struct))))))) |
| 335 | (unless (eobp) |
| 336 | (forward-line 1)) |
| 337 | (nreverse struct))) |
| 338 | |
| 339 | (defun mml-parse-singlepart-with-multiple-charsets |
| 340 | (orig-tag beg end &optional use-ascii) |
| 341 | (save-excursion |
| 342 | (save-restriction |
| 343 | (narrow-to-region beg end) |
| 344 | (goto-char (point-min)) |
| 345 | (let ((current (or (mm-mime-charset (mm-charset-after)) |
| 346 | (and use-ascii 'us-ascii))) |
| 347 | charset struct space newline paragraph) |
| 348 | (while (not (eobp)) |
| 349 | (setq charset (mm-mime-charset (mm-charset-after))) |
| 350 | (cond |
| 351 | ;; The charset remains the same. |
| 352 | ((eq charset 'us-ascii)) |
| 353 | ((or (and use-ascii (not charset)) |
| 354 | (eq charset current)) |
| 355 | (setq space nil |
| 356 | newline nil |
| 357 | paragraph nil)) |
| 358 | ;; The initial charset was ascii. |
| 359 | ((eq current 'us-ascii) |
| 360 | (setq current charset |
| 361 | space nil |
| 362 | newline nil |
| 363 | paragraph nil)) |
| 364 | ;; We have a change in charsets. |
| 365 | (t |
| 366 | (push (append |
| 367 | orig-tag |
| 368 | (list (cons 'contents |
| 369 | (buffer-substring-no-properties |
| 370 | beg (or paragraph newline space (point)))))) |
| 371 | struct) |
| 372 | (setq beg (or paragraph newline space (point)) |
| 373 | current charset |
| 374 | space nil |
| 375 | newline nil |
| 376 | paragraph nil))) |
| 377 | ;; Compute places where it might be nice to break the part. |
| 378 | (cond |
| 379 | ((memq (following-char) '(? ?\t)) |
| 380 | (setq space (1+ (point)))) |
| 381 | ((and (eq (following-char) ?\n) |
| 382 | (not (bobp)) |
| 383 | (eq (char-after (1- (point))) ?\n)) |
| 384 | (setq paragraph (point))) |
| 385 | ((eq (following-char) ?\n) |
| 386 | (setq newline (1+ (point))))) |
| 387 | (forward-char 1)) |
| 388 | ;; Do the final part. |
| 389 | (unless (= beg (point)) |
| 390 | (push (append orig-tag |
| 391 | (list (cons 'contents |
| 392 | (buffer-substring-no-properties |
| 393 | beg (point))))) |
| 394 | struct)) |
| 395 | struct)))) |
| 396 | |
| 397 | (defun mml-read-tag () |
| 398 | "Read a tag and return the contents." |
| 399 | (let ((orig-point (point)) |
| 400 | contents name elem val) |
| 401 | (forward-char 2) |
| 402 | (setq name (buffer-substring-no-properties |
| 403 | (point) (progn (forward-sexp 1) (point)))) |
| 404 | (skip-chars-forward " \t\n") |
| 405 | (while (not (looking-at ">[ \t]*\n?")) |
| 406 | (setq elem (buffer-substring-no-properties |
| 407 | (point) (progn (forward-sexp 1) (point)))) |
| 408 | (skip-chars-forward "= \t\n") |
| 409 | (setq val (buffer-substring-no-properties |
| 410 | (point) (progn (forward-sexp 1) (point)))) |
| 411 | (when (string-match "\\`\"" val) |
| 412 | (setq val (read val))) ;; inverse of prin1 in mml-insert-tag |
| 413 | (push (cons (intern elem) val) contents) |
| 414 | (skip-chars-forward " \t\n")) |
| 415 | (goto-char (match-end 0)) |
| 416 | ;; Don't skip the leading space. |
| 417 | ;;(skip-chars-forward " \t\n") |
| 418 | ;; Put the tag location into the returned contents |
| 419 | (setq contents (append (list (cons 'tag-location orig-point)) contents)) |
| 420 | (cons (intern name) (nreverse contents)))) |
| 421 | |
| 422 | (defun mml-buffer-substring-no-properties-except-hard-newlines (start end) |
| 423 | (let ((str (buffer-substring-no-properties start end)) |
| 424 | (bufstart start) tmp) |
| 425 | (while (setq tmp (text-property-any start end 'hard 't)) |
| 426 | (set-text-properties (- tmp bufstart) (- tmp bufstart -1) |
| 427 | '(hard t) str) |
| 428 | (setq start (1+ tmp))) |
| 429 | str)) |
| 430 | |
| 431 | (defun mml-read-part (&optional mml) |
| 432 | "Return the buffer up till the next part, multipart or closing part or multipart. |
| 433 | If MML is non-nil, return the buffer up till the correspondent mml tag." |
| 434 | (let ((beg (point)) (count 1)) |
| 435 | ;; If the tag ended at the end of the line, we go to the next line. |
| 436 | (when (looking-at "[ \t]*\n") |
| 437 | (forward-line 1)) |
| 438 | (if mml |
| 439 | (progn |
| 440 | (while (and (> count 0) (not (eobp))) |
| 441 | (if (re-search-forward "<#\\(/\\)?mml." nil t) |
| 442 | (setq count (+ count (if (match-beginning 1) -1 1))) |
| 443 | (goto-char (point-max)))) |
| 444 | (mml-buffer-substring-no-properties-except-hard-newlines |
| 445 | beg (if (> count 0) |
| 446 | (point) |
| 447 | (match-beginning 0)))) |
| 448 | (if (re-search-forward |
| 449 | "<#\\(/\\)?\\(multipart\\|part\\|external\\|mml\\)." nil t) |
| 450 | (prog1 |
| 451 | (mml-buffer-substring-no-properties-except-hard-newlines |
| 452 | beg (match-beginning 0)) |
| 453 | (if (or (not (match-beginning 1)) |
| 454 | (equal (match-string 2) "multipart")) |
| 455 | (goto-char (match-beginning 0)) |
| 456 | (when (looking-at "[ \t]*\n") |
| 457 | (forward-line 1)))) |
| 458 | (mml-buffer-substring-no-properties-except-hard-newlines |
| 459 | beg (goto-char (point-max))))))) |
| 460 | |
| 461 | (defvar mml-boundary nil) |
| 462 | (defvar mml-base-boundary "-=-=") |
| 463 | (defvar mml-multipart-number 0) |
| 464 | (defvar mml-inhibit-compute-boundary nil) |
| 465 | |
| 466 | (defun mml-generate-mime () |
| 467 | "Generate a MIME message based on the current MML document." |
| 468 | (let ((cont (mml-parse)) |
| 469 | (mml-multipart-number mml-multipart-number) |
| 470 | (options message-options)) |
| 471 | (if (not cont) |
| 472 | nil |
| 473 | (prog1 |
| 474 | (mm-with-multibyte-buffer |
| 475 | (setq message-options options) |
| 476 | (if (and (consp (car cont)) |
| 477 | (= (length cont) 1)) |
| 478 | (mml-generate-mime-1 (car cont)) |
| 479 | (mml-generate-mime-1 (nconc (list 'multipart '(type . "mixed")) |
| 480 | cont))) |
| 481 | (setq options message-options) |
| 482 | (buffer-string)) |
| 483 | (setq message-options options))))) |
| 484 | |
| 485 | (defun mml-generate-mime-1 (cont) |
| 486 | (let ((mm-use-ultra-safe-encoding |
| 487 | (or mm-use-ultra-safe-encoding (assq 'sign cont)))) |
| 488 | (save-restriction |
| 489 | (narrow-to-region (point) (point)) |
| 490 | (mml-tweak-part cont) |
| 491 | (cond |
| 492 | ((or (eq (car cont) 'part) (eq (car cont) 'mml)) |
| 493 | (let* ((raw (cdr (assq 'raw cont))) |
| 494 | (filename (cdr (assq 'filename cont))) |
| 495 | (type (or (cdr (assq 'type cont)) |
| 496 | (if filename |
| 497 | (or (mm-default-file-encoding filename) |
| 498 | "application/octet-stream") |
| 499 | "text/plain"))) |
| 500 | (charset (cdr (assq 'charset cont))) |
| 501 | (coding (mm-charset-to-coding-system charset)) |
| 502 | encoding flowed coded) |
| 503 | (cond ((eq coding 'ascii) |
| 504 | (setq charset nil |
| 505 | coding nil)) |
| 506 | (charset |
| 507 | ;; The value of `charset' might be a bogus alias that |
| 508 | ;; `mm-charset-synonym-alist' provides, like `utf8', |
| 509 | ;; so we prefer the MIME charset that Emacs knows for |
| 510 | ;; the coding system `coding'. |
| 511 | (setq charset (or (mm-coding-system-to-mime-charset coding) |
| 512 | (intern (downcase charset)))))) |
| 513 | (if (and (not raw) |
| 514 | (member (car (split-string type "/")) '("text" "message"))) |
| 515 | (progn |
| 516 | (with-temp-buffer |
| 517 | (cond |
| 518 | ((cdr (assq 'buffer cont)) |
| 519 | (insert-buffer-substring (cdr (assq 'buffer cont)))) |
| 520 | ((and filename |
| 521 | (not (equal (cdr (assq 'nofile cont)) "yes"))) |
| 522 | (let ((coding-system-for-read coding)) |
| 523 | (mm-insert-file-contents filename))) |
| 524 | ((eq 'mml (car cont)) |
| 525 | (insert (cdr (assq 'contents cont)))) |
| 526 | (t |
| 527 | (save-restriction |
| 528 | (narrow-to-region (point) (point)) |
| 529 | (insert (cdr (assq 'contents cont))) |
| 530 | ;; Remove quotes from quoted tags. |
| 531 | (goto-char (point-min)) |
| 532 | (while (re-search-forward |
| 533 | "<#!+/?\\(part\\|multipart\\|external\\|mml\\|secure\\)" |
| 534 | nil t) |
| 535 | (delete-region (+ (match-beginning 0) 2) |
| 536 | (+ (match-beginning 0) 3)))))) |
| 537 | (cond |
| 538 | ((eq (car cont) 'mml) |
| 539 | (let ((mml-boundary (mml-compute-boundary cont)) |
| 540 | ;; It is necessary for the case where this |
| 541 | ;; function is called recursively since |
| 542 | ;; `m-g-d-t' will be bound to "message/rfc822" |
| 543 | ;; when encoding an article to be forwarded. |
| 544 | (mml-generate-default-type "text/plain")) |
| 545 | (mml-to-mime) |
| 546 | ;; Update handle so mml-compute-boundary can |
| 547 | ;; detect collisions with the nested parts. |
| 548 | (unless mml-inhibit-compute-boundary |
| 549 | (setcdr (assoc 'contents cont) (buffer-string)))) |
| 550 | (let ((mm-7bit-chars (concat mm-7bit-chars "\x1b"))) |
| 551 | ;; ignore 0x1b, it is part of iso-2022-jp |
| 552 | (setq encoding (mm-body-7-or-8)))) |
| 553 | ((string= (car (split-string type "/")) "message") |
| 554 | (let ((mm-7bit-chars (concat mm-7bit-chars "\x1b"))) |
| 555 | ;; ignore 0x1b, it is part of iso-2022-jp |
| 556 | (setq encoding (mm-body-7-or-8)))) |
| 557 | (t |
| 558 | ;; Only perform format=flowed filling on text/plain |
| 559 | ;; parts where there either isn't a format parameter |
| 560 | ;; in the mml tag or it says "flowed" and there |
| 561 | ;; actually are hard newlines in the text. |
| 562 | (let (use-hard-newlines) |
| 563 | (when (and mml-enable-flowed |
| 564 | (string= type "text/plain") |
| 565 | (not (string= (cdr (assq 'sign cont)) "pgp")) |
| 566 | (or (null (assq 'format cont)) |
| 567 | (string= (cdr (assq 'format cont)) |
| 568 | "flowed")) |
| 569 | (setq use-hard-newlines |
| 570 | (text-property-any |
| 571 | (point-min) (point-max) 'hard 't))) |
| 572 | (fill-flowed-encode) |
| 573 | ;; Indicate that `mml-insert-mime-headers' should |
| 574 | ;; insert a "; format=flowed" string unless the |
| 575 | ;; user has already specified it. |
| 576 | (setq flowed (null (assq 'format cont))))) |
| 577 | ;; Prefer `utf-8' for text/calendar parts. |
| 578 | (if (or charset |
| 579 | (not (string= type "text/calendar"))) |
| 580 | (setq charset (mm-encode-body charset)) |
| 581 | (let ((mm-coding-system-priorities |
| 582 | (cons 'utf-8 mm-coding-system-priorities))) |
| 583 | (setq charset (mm-encode-body)))) |
| 584 | (setq encoding (mm-body-encoding |
| 585 | charset (cdr (assq 'encoding cont)))))) |
| 586 | (setq coded (buffer-string))) |
| 587 | (mml-insert-mime-headers cont type charset encoding flowed) |
| 588 | (insert "\n") |
| 589 | (insert coded)) |
| 590 | (mm-with-unibyte-buffer |
| 591 | (cond |
| 592 | ((cdr (assq 'buffer cont)) |
| 593 | (insert (mm-string-as-unibyte |
| 594 | (with-current-buffer (cdr (assq 'buffer cont)) |
| 595 | (buffer-string))))) |
| 596 | ((and filename |
| 597 | (not (equal (cdr (assq 'nofile cont)) "yes"))) |
| 598 | (let ((coding-system-for-read mm-binary-coding-system)) |
| 599 | (mm-insert-file-contents filename nil nil nil nil t)) |
| 600 | (unless charset |
| 601 | (setq charset (mm-coding-system-to-mime-charset |
| 602 | (mm-find-buffer-file-coding-system |
| 603 | filename))))) |
| 604 | (t |
| 605 | (let ((contents (cdr (assq 'contents cont)))) |
| 606 | (if (if (featurep 'xemacs) |
| 607 | (string-match "[^\000-\377]" contents) |
| 608 | (mm-multibyte-string-p contents)) |
| 609 | (progn |
| 610 | (mm-enable-multibyte) |
| 611 | (insert contents) |
| 612 | (unless raw |
| 613 | (setq charset (mm-encode-body charset)))) |
| 614 | (insert contents))))) |
| 615 | (if (setq encoding (cdr (assq 'encoding cont))) |
| 616 | (setq encoding (intern (downcase encoding)))) |
| 617 | (setq encoding (mm-encode-buffer type encoding) |
| 618 | coded (mm-string-as-multibyte (buffer-string)))) |
| 619 | (mml-insert-mime-headers cont type charset encoding nil) |
| 620 | (insert "\n" coded)))) |
| 621 | ((eq (car cont) 'external) |
| 622 | (insert "Content-Type: message/external-body") |
| 623 | (let ((parameters (mml-parameter-string |
| 624 | cont '(expiration size permission))) |
| 625 | (name (cdr (assq 'name cont))) |
| 626 | (url (cdr (assq 'url cont)))) |
| 627 | (when name |
| 628 | (setq name (mml-parse-file-name name)) |
| 629 | (if (stringp name) |
| 630 | (mml-insert-parameter |
| 631 | (mail-header-encode-parameter "name" name) |
| 632 | "access-type=local-file") |
| 633 | (mml-insert-parameter |
| 634 | (mail-header-encode-parameter |
| 635 | "name" (file-name-nondirectory (nth 2 name))) |
| 636 | (mail-header-encode-parameter "site" (nth 1 name)) |
| 637 | (mail-header-encode-parameter |
| 638 | "directory" (file-name-directory (nth 2 name)))) |
| 639 | (mml-insert-parameter |
| 640 | (concat "access-type=" |
| 641 | (if (member (nth 0 name) '("ftp@" "anonymous@")) |
| 642 | "anon-ftp" |
| 643 | "ftp"))))) |
| 644 | (when url |
| 645 | (mml-insert-parameter |
| 646 | (mail-header-encode-parameter "url" url) |
| 647 | "access-type=url")) |
| 648 | (when parameters |
| 649 | (mml-insert-parameter-string |
| 650 | cont '(expiration size permission))) |
| 651 | (insert "\n\n") |
| 652 | (insert "Content-Type: " |
| 653 | (or (cdr (assq 'type cont)) |
| 654 | (if name |
| 655 | (or (mm-default-file-encoding name) |
| 656 | "application/octet-stream") |
| 657 | "text/plain")) |
| 658 | "\n") |
| 659 | (insert "Content-ID: " (message-make-message-id) "\n") |
| 660 | (insert "Content-Transfer-Encoding: " |
| 661 | (or (cdr (assq 'encoding cont)) "binary")) |
| 662 | (insert "\n\n") |
| 663 | (insert (or (cdr (assq 'contents cont)))) |
| 664 | (insert "\n"))) |
| 665 | ((eq (car cont) 'multipart) |
| 666 | (let* ((type (or (cdr (assq 'type cont)) "mixed")) |
| 667 | (mml-generate-default-type (if (equal type "digest") |
| 668 | "message/rfc822" |
| 669 | "text/plain")) |
| 670 | (handler (assoc type mml-generate-multipart-alist))) |
| 671 | (if handler |
| 672 | (funcall (cdr handler) cont) |
| 673 | ;; No specific handler. Use default one. |
| 674 | (let ((mml-boundary (mml-compute-boundary cont))) |
| 675 | (insert (format "Content-Type: multipart/%s; boundary=\"%s\"" |
| 676 | type mml-boundary) |
| 677 | (if (cdr (assq 'start cont)) |
| 678 | (format "; start=\"%s\"\n" (cdr (assq 'start cont))) |
| 679 | "\n")) |
| 680 | (let ((cont cont) part) |
| 681 | (while (setq part (pop cont)) |
| 682 | ;; Skip `multipart' and attributes. |
| 683 | (when (and (consp part) (consp (cdr part))) |
| 684 | (insert "\n--" mml-boundary "\n") |
| 685 | (mml-generate-mime-1 part) |
| 686 | (goto-char (point-max))))) |
| 687 | (insert "\n--" mml-boundary "--\n"))))) |
| 688 | (t |
| 689 | (error "Invalid element: %S" cont))) |
| 690 | ;; handle sign & encrypt tags in a semi-smart way. |
| 691 | (let ((sign-item (assoc (cdr (assq 'sign cont)) mml-sign-alist)) |
| 692 | (encrypt-item (assoc (cdr (assq 'encrypt cont)) |
| 693 | mml-encrypt-alist)) |
| 694 | sender recipients) |
| 695 | (when (or sign-item encrypt-item) |
| 696 | (when (setq sender (cdr (assq 'sender cont))) |
| 697 | (message-options-set 'mml-sender sender) |
| 698 | (message-options-set 'message-sender sender)) |
| 699 | (if (setq recipients (cdr (assq 'recipients cont))) |
| 700 | (message-options-set 'message-recipients recipients)) |
| 701 | (let ((style (mml-signencrypt-style |
| 702 | (first (or sign-item encrypt-item))))) |
| 703 | ;; check if: we're both signing & encrypting, both methods |
| 704 | ;; are the same (why would they be different?!), and that |
| 705 | ;; the signencrypt style allows for combined operation. |
| 706 | (if (and sign-item encrypt-item (equal (first sign-item) |
| 707 | (first encrypt-item)) |
| 708 | (equal style 'combined)) |
| 709 | (funcall (nth 1 encrypt-item) cont t) |
| 710 | ;; otherwise, revert to the old behavior. |
| 711 | (when sign-item |
| 712 | (funcall (nth 1 sign-item) cont)) |
| 713 | (when encrypt-item |
| 714 | (funcall (nth 1 encrypt-item) cont))))))))) |
| 715 | |
| 716 | (defun mml-compute-boundary (cont) |
| 717 | "Return a unique boundary that does not exist in CONT." |
| 718 | (let ((mml-boundary (funcall mml-boundary-function |
| 719 | (incf mml-multipart-number)))) |
| 720 | (unless mml-inhibit-compute-boundary |
| 721 | ;; This function tries again and again until it has found |
| 722 | ;; a unique boundary. |
| 723 | (while (not (catch 'not-unique |
| 724 | (mml-compute-boundary-1 cont))))) |
| 725 | mml-boundary)) |
| 726 | |
| 727 | (defun mml-compute-boundary-1 (cont) |
| 728 | (cond |
| 729 | ((member (car cont) '(part mml)) |
| 730 | (mm-with-multibyte-buffer |
| 731 | (let ((mml-inhibit-compute-boundary t) |
| 732 | (mml-multipart-number 0) |
| 733 | mml-sign-alist mml-encrypt-alist) |
| 734 | (mml-generate-mime-1 cont)) |
| 735 | (goto-char (point-min)) |
| 736 | (when (re-search-forward (concat "^--" (regexp-quote mml-boundary)) |
| 737 | nil t) |
| 738 | (setq mml-boundary (funcall mml-boundary-function |
| 739 | (incf mml-multipart-number))) |
| 740 | (throw 'not-unique nil)))) |
| 741 | ((eq (car cont) 'multipart) |
| 742 | (mapc 'mml-compute-boundary-1 (cddr cont)))) |
| 743 | t) |
| 744 | |
| 745 | (defun mml-make-boundary (number) |
| 746 | (concat (make-string (% number 60) ?=) |
| 747 | (if (> number 17) |
| 748 | (format "%x" number) |
| 749 | "") |
| 750 | mml-base-boundary)) |
| 751 | |
| 752 | (defun mml-content-disposition (type &optional filename) |
| 753 | "Return a default disposition name suitable to TYPE or FILENAME." |
| 754 | (let ((defs mml-content-disposition-alist) |
| 755 | disposition def types) |
| 756 | (while (and (not disposition) defs) |
| 757 | (setq def (pop defs)) |
| 758 | (cond ((stringp (car def)) |
| 759 | (when (and filename |
| 760 | (string-match (car def) filename)) |
| 761 | (setq disposition (cdr def)))) |
| 762 | ((consp (cdr def)) |
| 763 | (when (string= (car (setq types (split-string type "/"))) |
| 764 | (car def)) |
| 765 | (setq type (cadr types) |
| 766 | types (cdr def)) |
| 767 | (while (and (not disposition) types) |
| 768 | (setq def (pop types)) |
| 769 | (when (or (eq (car def) t) (string= type (car def))) |
| 770 | (setq disposition (cdr def)))))) |
| 771 | (t |
| 772 | (when (or (eq (car def) t) (string= type (car def))) |
| 773 | (setq disposition (cdr def)))))) |
| 774 | (or disposition "attachment"))) |
| 775 | |
| 776 | (defun mml-insert-mime-headers (cont type charset encoding flowed) |
| 777 | (let (parameters id disposition description) |
| 778 | (setq parameters |
| 779 | (mml-parameter-string |
| 780 | cont mml-content-type-parameters)) |
| 781 | (when (or charset |
| 782 | parameters |
| 783 | flowed |
| 784 | (not (equal type mml-generate-default-type)) |
| 785 | mml-insert-mime-headers-always) |
| 786 | (when (consp charset) |
| 787 | (error |
| 788 | "Can't encode a part with several charsets")) |
| 789 | (insert "Content-Type: " type) |
| 790 | (when charset |
| 791 | (mml-insert-parameter |
| 792 | (mail-header-encode-parameter "charset" (symbol-name charset)))) |
| 793 | (when flowed |
| 794 | (mml-insert-parameter "format=flowed")) |
| 795 | (when parameters |
| 796 | (mml-insert-parameter-string |
| 797 | cont mml-content-type-parameters)) |
| 798 | (insert "\n")) |
| 799 | (when (setq id (cdr (assq 'id cont))) |
| 800 | (insert "Content-ID: " id "\n")) |
| 801 | (setq parameters |
| 802 | (mml-parameter-string |
| 803 | cont mml-content-disposition-parameters)) |
| 804 | (when (or (setq disposition (cdr (assq 'disposition cont))) |
| 805 | parameters) |
| 806 | (insert "Content-Disposition: " |
| 807 | (or disposition |
| 808 | (mml-content-disposition type (cdr (assq 'filename cont))))) |
| 809 | (when parameters |
| 810 | (mml-insert-parameter-string |
| 811 | cont mml-content-disposition-parameters)) |
| 812 | (insert "\n")) |
| 813 | (unless (eq encoding '7bit) |
| 814 | (insert (format "Content-Transfer-Encoding: %s\n" encoding))) |
| 815 | (when (setq description (cdr (assq 'description cont))) |
| 816 | (insert "Content-Description: ") |
| 817 | (setq description (prog1 |
| 818 | (point) |
| 819 | (insert description "\n"))) |
| 820 | (mail-encode-encoded-word-region description (point))))) |
| 821 | |
| 822 | (defun mml-parameter-string (cont types) |
| 823 | (let ((string "") |
| 824 | value type) |
| 825 | (while (setq type (pop types)) |
| 826 | (when (setq value (cdr (assq type cont))) |
| 827 | ;; Strip directory component from the filename parameter. |
| 828 | (when (eq type 'filename) |
| 829 | (setq value (file-name-nondirectory value))) |
| 830 | (setq string (concat string "; " |
| 831 | (mail-header-encode-parameter |
| 832 | (symbol-name type) value))))) |
| 833 | (when (not (zerop (length string))) |
| 834 | string))) |
| 835 | |
| 836 | (defun mml-insert-parameter-string (cont types) |
| 837 | (let (value type) |
| 838 | (while (setq type (pop types)) |
| 839 | (when (setq value (cdr (assq type cont))) |
| 840 | ;; Strip directory component from the filename parameter. |
| 841 | (when (eq type 'filename) |
| 842 | (setq value (file-name-nondirectory value))) |
| 843 | (mml-insert-parameter |
| 844 | (mail-header-encode-parameter |
| 845 | (symbol-name type) value)))))) |
| 846 | |
| 847 | (defvar ange-ftp-name-format) |
| 848 | (defvar efs-path-regexp) |
| 849 | |
| 850 | (defun mml-parse-file-name (path) |
| 851 | (if (if (boundp 'efs-path-regexp) |
| 852 | (string-match efs-path-regexp path) |
| 853 | (if (boundp 'ange-ftp-name-format) |
| 854 | (string-match (car ange-ftp-name-format) path))) |
| 855 | (list (match-string 1 path) (match-string 2 path) |
| 856 | (substring path (1+ (match-end 2)))) |
| 857 | path)) |
| 858 | |
| 859 | (defun mml-insert-buffer (buffer) |
| 860 | "Insert BUFFER at point and quote any MML markup." |
| 861 | (save-restriction |
| 862 | (narrow-to-region (point) (point)) |
| 863 | (insert-buffer-substring buffer) |
| 864 | (mml-quote-region (point-min) (point-max)) |
| 865 | (goto-char (point-max)))) |
| 866 | |
| 867 | ;;; |
| 868 | ;;; Transforming MIME to MML |
| 869 | ;;; |
| 870 | |
| 871 | ;; message-narrow-to-head autoloads message. |
| 872 | (declare-function message-remove-header "message" |
| 873 | (header &optional is-regexp first reverse)) |
| 874 | |
| 875 | (defun mime-to-mml (&optional handles) |
| 876 | "Translate the current buffer (which should be a message) into MML. |
| 877 | If HANDLES is non-nil, use it instead reparsing the buffer." |
| 878 | ;; First decode the head. |
| 879 | (save-restriction |
| 880 | (message-narrow-to-head) |
| 881 | (let ((rfc2047-quote-decoded-words-containing-tspecials t)) |
| 882 | (mail-decode-encoded-word-region (point-min) (point-max)))) |
| 883 | (unless handles |
| 884 | (setq handles (mm-dissect-buffer t))) |
| 885 | (goto-char (point-min)) |
| 886 | (search-forward "\n\n" nil t) |
| 887 | (delete-region (point) (point-max)) |
| 888 | (if (stringp (car handles)) |
| 889 | (mml-insert-mime handles) |
| 890 | (mml-insert-mime handles t)) |
| 891 | (mm-destroy-parts handles) |
| 892 | (save-restriction |
| 893 | (message-narrow-to-head) |
| 894 | ;; Remove them, they are confusing. |
| 895 | (message-remove-header "Content-Type") |
| 896 | (message-remove-header "MIME-Version") |
| 897 | (message-remove-header "Content-Disposition") |
| 898 | (message-remove-header "Content-Transfer-Encoding"))) |
| 899 | |
| 900 | (autoload 'message-encode-message-body "message") |
| 901 | (declare-function message-narrow-to-headers-or-head "message" ()) |
| 902 | |
| 903 | ;;;###autoload |
| 904 | (defun mml-to-mime () |
| 905 | "Translate the current buffer from MML to MIME." |
| 906 | ;; `message-encode-message-body' will insert an encoded Content-Description |
| 907 | ;; header in the message header if the body contains a single part |
| 908 | ;; that is specified by a user with a MML tag containing a description |
| 909 | ;; token. So, we encode the message header first to prevent the encoded |
| 910 | ;; Content-Description header from being encoded again. |
| 911 | (save-restriction |
| 912 | (message-narrow-to-headers-or-head) |
| 913 | ;; Skip past any From_ headers. |
| 914 | (while (looking-at "From ") |
| 915 | (forward-line 1)) |
| 916 | (let ((mail-parse-charset message-default-charset)) |
| 917 | (mail-encode-encoded-word-buffer))) |
| 918 | (message-encode-message-body)) |
| 919 | |
| 920 | (defun mml-insert-mime (handle &optional no-markup) |
| 921 | (let (textp buffer mmlp) |
| 922 | ;; Determine type and stuff. |
| 923 | (unless (stringp (car handle)) |
| 924 | (unless (setq textp (equal (mm-handle-media-supertype handle) "text")) |
| 925 | (with-current-buffer (setq buffer (mml-generate-new-buffer " *mml*")) |
| 926 | (if (eq (mail-content-type-get (mm-handle-type handle) 'charset) |
| 927 | 'gnus-decoded) |
| 928 | ;; A part that mm-uu dissected from a non-MIME message |
| 929 | ;; because of `gnus-article-emulate-mime'. |
| 930 | (progn |
| 931 | (mm-enable-multibyte) |
| 932 | (insert-buffer-substring (mm-handle-buffer handle))) |
| 933 | (mm-insert-part handle 'no-cache) |
| 934 | (if (setq mmlp (equal (mm-handle-media-type handle) |
| 935 | "message/rfc822")) |
| 936 | (mime-to-mml)))))) |
| 937 | (if mmlp |
| 938 | (mml-insert-mml-markup handle nil t t) |
| 939 | (unless (and no-markup |
| 940 | (equal (mm-handle-media-type handle) "text/plain")) |
| 941 | (mml-insert-mml-markup handle buffer textp))) |
| 942 | (cond |
| 943 | (mmlp |
| 944 | (insert-buffer-substring buffer) |
| 945 | (goto-char (point-max)) |
| 946 | (insert "<#/mml>\n")) |
| 947 | ((stringp (car handle)) |
| 948 | (mapc 'mml-insert-mime (cdr handle)) |
| 949 | (insert "<#/multipart>\n")) |
| 950 | (textp |
| 951 | (let ((charset (mail-content-type-get |
| 952 | (mm-handle-type handle) 'charset)) |
| 953 | (start (point))) |
| 954 | (if (eq charset 'gnus-decoded) |
| 955 | (mm-insert-part handle) |
| 956 | (insert (mm-decode-string (mm-get-part handle) charset))) |
| 957 | (mml-quote-region start (point))) |
| 958 | (goto-char (point-max))) |
| 959 | (t |
| 960 | (insert "<#/part>\n"))))) |
| 961 | |
| 962 | (defun mml-insert-mml-markup (handle &optional buffer nofile mmlp) |
| 963 | "Take a MIME handle and insert an MML tag." |
| 964 | (if (stringp (car handle)) |
| 965 | (progn |
| 966 | (insert "<#multipart type=" (mm-handle-media-subtype handle)) |
| 967 | (let ((start (mm-handle-multipart-ctl-parameter handle 'start))) |
| 968 | (when start |
| 969 | (insert " start=\"" start "\""))) |
| 970 | (insert ">\n")) |
| 971 | (if mmlp |
| 972 | (insert "<#mml type=" (mm-handle-media-type handle)) |
| 973 | (insert "<#part type=" (mm-handle-media-type handle))) |
| 974 | (dolist (elem (append (cdr (mm-handle-type handle)) |
| 975 | (cdr (mm-handle-disposition handle)))) |
| 976 | (unless (symbolp (cdr elem)) |
| 977 | (insert " " (symbol-name (car elem)) "=\"" (cdr elem) "\""))) |
| 978 | (when (mm-handle-id handle) |
| 979 | (insert " id=\"" (mm-handle-id handle) "\"")) |
| 980 | (when (mm-handle-disposition handle) |
| 981 | (insert " disposition=" (car (mm-handle-disposition handle)))) |
| 982 | (when buffer |
| 983 | (insert " buffer=\"" (buffer-name buffer) "\"")) |
| 984 | (when nofile |
| 985 | (insert " nofile=yes")) |
| 986 | (when (mm-handle-description handle) |
| 987 | (insert " description=\"" (mm-handle-description handle) "\"")) |
| 988 | (insert ">\n"))) |
| 989 | |
| 990 | (defun mml-insert-parameter (&rest parameters) |
| 991 | "Insert PARAMETERS in a nice way." |
| 992 | (let (start end) |
| 993 | (dolist (param parameters) |
| 994 | (insert ";") |
| 995 | (setq start (point)) |
| 996 | (insert " " param) |
| 997 | (setq end (point)) |
| 998 | (goto-char start) |
| 999 | (end-of-line) |
| 1000 | (if (> (current-column) 76) |
| 1001 | (progn |
| 1002 | (goto-char start) |
| 1003 | (insert "\n") |
| 1004 | (goto-char (1+ end))) |
| 1005 | (goto-char end))))) |
| 1006 | |
| 1007 | ;;; |
| 1008 | ;;; Mode for inserting and editing MML forms |
| 1009 | ;;; |
| 1010 | |
| 1011 | (defvar mml-mode-map |
| 1012 | (let ((sign (make-sparse-keymap)) |
| 1013 | (encrypt (make-sparse-keymap)) |
| 1014 | (signpart (make-sparse-keymap)) |
| 1015 | (encryptpart (make-sparse-keymap)) |
| 1016 | (map (make-sparse-keymap)) |
| 1017 | (main (make-sparse-keymap))) |
| 1018 | (define-key map "\C-s" 'mml-secure-message-sign) |
| 1019 | (define-key map "\C-c" 'mml-secure-message-encrypt) |
| 1020 | (define-key map "\C-e" 'mml-secure-message-sign-encrypt) |
| 1021 | (define-key map "\C-p\C-s" 'mml-secure-sign) |
| 1022 | (define-key map "\C-p\C-c" 'mml-secure-encrypt) |
| 1023 | (define-key sign "p" 'mml-secure-message-sign-pgpmime) |
| 1024 | (define-key sign "o" 'mml-secure-message-sign-pgp) |
| 1025 | (define-key sign "s" 'mml-secure-message-sign-smime) |
| 1026 | (define-key signpart "p" 'mml-secure-sign-pgpmime) |
| 1027 | (define-key signpart "o" 'mml-secure-sign-pgp) |
| 1028 | (define-key signpart "s" 'mml-secure-sign-smime) |
| 1029 | (define-key encrypt "p" 'mml-secure-message-encrypt-pgpmime) |
| 1030 | (define-key encrypt "o" 'mml-secure-message-encrypt-pgp) |
| 1031 | (define-key encrypt "s" 'mml-secure-message-encrypt-smime) |
| 1032 | (define-key encryptpart "p" 'mml-secure-encrypt-pgpmime) |
| 1033 | (define-key encryptpart "o" 'mml-secure-encrypt-pgp) |
| 1034 | (define-key encryptpart "s" 'mml-secure-encrypt-smime) |
| 1035 | (define-key map "\C-n" 'mml-unsecure-message) |
| 1036 | (define-key map "f" 'mml-attach-file) |
| 1037 | (define-key map "b" 'mml-attach-buffer) |
| 1038 | (define-key map "e" 'mml-attach-external) |
| 1039 | (define-key map "q" 'mml-quote-region) |
| 1040 | (define-key map "m" 'mml-insert-multipart) |
| 1041 | (define-key map "p" 'mml-insert-part) |
| 1042 | (define-key map "v" 'mml-validate) |
| 1043 | (define-key map "P" 'mml-preview) |
| 1044 | (define-key map "s" sign) |
| 1045 | (define-key map "S" signpart) |
| 1046 | (define-key map "c" encrypt) |
| 1047 | (define-key map "C" encryptpart) |
| 1048 | ;;(define-key map "n" 'mml-narrow-to-part) |
| 1049 | ;; `M-m' conflicts with `back-to-indentation'. |
| 1050 | ;; (define-key main "\M-m" map) |
| 1051 | (define-key main "\C-c\C-m" map) |
| 1052 | main)) |
| 1053 | |
| 1054 | (easy-menu-define |
| 1055 | mml-menu mml-mode-map "" |
| 1056 | `("Attachments" |
| 1057 | ["Attach File..." mml-attach-file |
| 1058 | ,@(if (featurep 'xemacs) '(t) |
| 1059 | '(:help "Attach a file at point"))] |
| 1060 | ["Attach Buffer..." mml-attach-buffer |
| 1061 | ,@(if (featurep 'xemacs) '(t) |
| 1062 | '(:help "Attach a buffer to the outgoing message"))] |
| 1063 | ["Attach External..." mml-attach-external |
| 1064 | ,@(if (featurep 'xemacs) '(t) |
| 1065 | '(:help "Attach reference to an external file"))] |
| 1066 | ;; FIXME: Is it possible to do this without using |
| 1067 | ;; `gnus-gcc-externalize-attachments'? |
| 1068 | ["Externalize Attachments" |
| 1069 | (lambda () |
| 1070 | (interactive) |
| 1071 | (if (not (and (boundp 'gnus-gcc-externalize-attachments) |
| 1072 | (memq gnus-gcc-externalize-attachments |
| 1073 | '(all t nil)))) |
| 1074 | ;; Stupid workaround for XEmacs not honoring :visible. |
| 1075 | (message "Can't handle this value of `gnus-gcc-externalize-attachments'") |
| 1076 | (setq gnus-gcc-externalize-attachments |
| 1077 | (not gnus-gcc-externalize-attachments)) |
| 1078 | (message "gnus-gcc-externalize-attachments is `%s'." |
| 1079 | gnus-gcc-externalize-attachments))) |
| 1080 | ;; XEmacs barfs on :visible. |
| 1081 | ,@(if (featurep 'xemacs) nil |
| 1082 | '(:visible (and (boundp 'gnus-gcc-externalize-attachments) |
| 1083 | (memq gnus-gcc-externalize-attachments |
| 1084 | '(all t nil))))) |
| 1085 | :style toggle |
| 1086 | :selected gnus-gcc-externalize-attachments |
| 1087 | ,@(if (featurep 'xemacs) nil |
| 1088 | '(:help "Save attachments as external parts in Gcc copies"))] |
| 1089 | "----" |
| 1090 | ;; |
| 1091 | ("Change Security Method" |
| 1092 | ["PGP/MIME" |
| 1093 | (lambda () (interactive) (setq mml-secure-method "pgpmime")) |
| 1094 | ,@(if (featurep 'xemacs) nil |
| 1095 | '(:help "Set Security Method to PGP/MIME")) |
| 1096 | :style radio |
| 1097 | :selected (equal mml-secure-method "pgpmime") ] |
| 1098 | ["S/MIME" |
| 1099 | (lambda () (interactive) (setq mml-secure-method "smime")) |
| 1100 | ,@(if (featurep 'xemacs) nil |
| 1101 | '(:help "Set Security Method to S/MIME")) |
| 1102 | :style radio |
| 1103 | :selected (equal mml-secure-method "smime") ] |
| 1104 | ["Inline PGP" |
| 1105 | (lambda () (interactive) (setq mml-secure-method "pgp")) |
| 1106 | ,@(if (featurep 'xemacs) nil |
| 1107 | '(:help "Set Security Method to inline PGP")) |
| 1108 | :style radio |
| 1109 | :selected (equal mml-secure-method "pgp") ] ) |
| 1110 | ;; |
| 1111 | ["Sign Message" mml-secure-message-sign t] |
| 1112 | ["Encrypt Message" mml-secure-message-encrypt t] |
| 1113 | ["Sign and Encrypt Message" mml-secure-message-sign-encrypt t] |
| 1114 | ["Encrypt/Sign off" mml-unsecure-message |
| 1115 | ,@(if (featurep 'xemacs) '(t) |
| 1116 | '(:help "Don't Encrypt/Sign Message"))] |
| 1117 | ;; Do we have separate encrypt and encrypt/sign commands for parts? |
| 1118 | ["Sign Part" mml-secure-sign t] |
| 1119 | ["Encrypt Part" mml-secure-encrypt t] |
| 1120 | "----" |
| 1121 | ;; Maybe we could remove these, because people who write MML most probably |
| 1122 | ;; don't use the menu: |
| 1123 | ["Insert Part..." mml-insert-part |
| 1124 | :active (message-in-body-p)] |
| 1125 | ["Insert Multipart..." mml-insert-multipart |
| 1126 | :active (message-in-body-p)] |
| 1127 | ;; |
| 1128 | ;;["Narrow" mml-narrow-to-part t] |
| 1129 | ["Quote MML in region" mml-quote-region |
| 1130 | :active (message-mark-active-p) |
| 1131 | ,@(if (featurep 'xemacs) nil |
| 1132 | '(:help "Quote MML tags in region"))] |
| 1133 | ["Validate MML" mml-validate t] |
| 1134 | ["Preview" mml-preview t] |
| 1135 | "----" |
| 1136 | ["Emacs MIME manual" (lambda () (interactive) (message-info 4)) |
| 1137 | ,@(if (featurep 'xemacs) '(t) |
| 1138 | '(:help "Display the Emacs MIME manual"))] |
| 1139 | ["PGG manual" (lambda () (interactive) (message-info mml2015-use)) |
| 1140 | ;; XEmacs barfs on :visible. |
| 1141 | ,@(if (featurep 'xemacs) nil |
| 1142 | '(:visible (and (boundp 'mml2015-use) (equal mml2015-use 'pgg)))) |
| 1143 | ,@(if (featurep 'xemacs) '(t) |
| 1144 | '(:help "Display the PGG manual"))] |
| 1145 | ["EasyPG manual" (lambda () (interactive) (require 'mml2015) (message-info mml2015-use)) |
| 1146 | ;; XEmacs barfs on :visible. |
| 1147 | ,@(if (featurep 'xemacs) nil |
| 1148 | '(:visible (and (boundp 'mml2015-use) (equal mml2015-use 'epg)))) |
| 1149 | ,@(if (featurep 'xemacs) '(t) |
| 1150 | '(:help "Display the EasyPG manual"))])) |
| 1151 | |
| 1152 | (define-minor-mode mml-mode |
| 1153 | "Minor mode for editing MML. |
| 1154 | MML is the MIME Meta Language, a minor mode for composing MIME articles. |
| 1155 | See Info node `(emacs-mime)Composing'. |
| 1156 | |
| 1157 | \\{mml-mode-map}" |
| 1158 | :lighter " MML" :keymap mml-mode-map |
| 1159 | (when mml-mode |
| 1160 | (easy-menu-add mml-menu mml-mode-map) |
| 1161 | (when (boundp 'dnd-protocol-alist) |
| 1162 | (set (make-local-variable 'dnd-protocol-alist) |
| 1163 | (append mml-dnd-protocol-alist dnd-protocol-alist))))) |
| 1164 | |
| 1165 | ;;; |
| 1166 | ;;; Helper functions for reading MIME stuff from the minibuffer and |
| 1167 | ;;; inserting stuff to the buffer. |
| 1168 | ;;; |
| 1169 | |
| 1170 | (defcustom mml-default-directory mm-default-directory |
| 1171 | "The default directory where mml will find files. |
| 1172 | If not set, `default-directory' will be used." |
| 1173 | :type '(choice directory (const :tag "Default" nil)) |
| 1174 | :version "23.1" ;; No Gnus |
| 1175 | :group 'message) |
| 1176 | |
| 1177 | (defun mml-minibuffer-read-file (prompt) |
| 1178 | (let* ((completion-ignored-extensions nil) |
| 1179 | (file (read-file-name prompt |
| 1180 | (or mml-default-directory default-directory) |
| 1181 | nil t))) |
| 1182 | ;; Prevent some common errors. This is inspired by similar code in |
| 1183 | ;; VM. |
| 1184 | (when (file-directory-p file) |
| 1185 | (error "%s is a directory, cannot attach" file)) |
| 1186 | (unless (file-exists-p file) |
| 1187 | (error "No such file: %s" file)) |
| 1188 | (unless (file-readable-p file) |
| 1189 | (error "Permission denied: %s" file)) |
| 1190 | file)) |
| 1191 | |
| 1192 | (declare-function mailcap-parse-mimetypes "mailcap" (&optional path force)) |
| 1193 | (declare-function mailcap-mime-types "mailcap" ()) |
| 1194 | |
| 1195 | (defun mml-minibuffer-read-type (name &optional default) |
| 1196 | (require 'mailcap) |
| 1197 | (mailcap-parse-mimetypes) |
| 1198 | (let* ((default (or default |
| 1199 | (mm-default-file-encoding name) |
| 1200 | ;; Perhaps here we should check what the file |
| 1201 | ;; looks like, and offer text/plain if it looks |
| 1202 | ;; like text/plain. |
| 1203 | "application/octet-stream")) |
| 1204 | (string (gnus-completing-read |
| 1205 | "Content type" |
| 1206 | (mailcap-mime-types) |
| 1207 | nil nil nil default))) |
| 1208 | (if (not (equal string "")) |
| 1209 | string |
| 1210 | default))) |
| 1211 | |
| 1212 | (defun mml-minibuffer-read-description () |
| 1213 | (let ((description (read-string "One line description: "))) |
| 1214 | (when (string-match "\\`[ \t]*\\'" description) |
| 1215 | (setq description nil)) |
| 1216 | description)) |
| 1217 | |
| 1218 | (defun mml-minibuffer-read-disposition (type &optional default filename) |
| 1219 | (unless default |
| 1220 | (setq default (mml-content-disposition type filename))) |
| 1221 | (let ((disposition (gnus-completing-read |
| 1222 | "Disposition" |
| 1223 | '("attachment" "inline") |
| 1224 | t nil nil default))) |
| 1225 | (if (not (equal disposition "")) |
| 1226 | disposition |
| 1227 | default))) |
| 1228 | |
| 1229 | (defun mml-quote-region (beg end) |
| 1230 | "Quote the MML tags in the region." |
| 1231 | (interactive "r") |
| 1232 | (save-excursion |
| 1233 | (save-restriction |
| 1234 | ;; Temporarily narrow the region to defend from changes |
| 1235 | ;; invalidating END. |
| 1236 | (narrow-to-region beg end) |
| 1237 | (goto-char (point-min)) |
| 1238 | ;; Quote parts. |
| 1239 | (while (re-search-forward |
| 1240 | "<#!*/?\\(multipart\\|part\\|external\\|mml\\|secure\\)" nil t) |
| 1241 | ;; Insert ! after the #. |
| 1242 | (goto-char (+ (match-beginning 0) 2)) |
| 1243 | (insert "!"))))) |
| 1244 | |
| 1245 | (defun mml-insert-tag (name &rest plist) |
| 1246 | "Insert an MML tag described by NAME and PLIST." |
| 1247 | (when (symbolp name) |
| 1248 | (setq name (symbol-name name))) |
| 1249 | (insert "<#" name) |
| 1250 | (while plist |
| 1251 | (let ((key (pop plist)) |
| 1252 | (value (pop plist))) |
| 1253 | (when value |
| 1254 | ;; Quote VALUE if it contains suspicious characters. |
| 1255 | (when (string-match "[\"'\\~/*;() \t\n]" value) |
| 1256 | (setq value (with-output-to-string |
| 1257 | (let (print-escape-nonascii) |
| 1258 | (prin1 value))))) |
| 1259 | (insert (format " %s=%s" key value))))) |
| 1260 | (insert ">\n")) |
| 1261 | |
| 1262 | (defun mml-insert-empty-tag (name &rest plist) |
| 1263 | "Insert an empty MML tag described by NAME and PLIST." |
| 1264 | (when (symbolp name) |
| 1265 | (setq name (symbol-name name))) |
| 1266 | (apply #'mml-insert-tag name plist) |
| 1267 | (insert "<#/" name ">\n")) |
| 1268 | |
| 1269 | ;;; Attachment functions. |
| 1270 | |
| 1271 | (defcustom mml-dnd-protocol-alist |
| 1272 | '(("^file:///" . mml-dnd-attach-file) |
| 1273 | ("^file://" . dnd-open-file) |
| 1274 | ("^file:" . mml-dnd-attach-file)) |
| 1275 | "The functions to call when a drop in `mml-mode' is made. |
| 1276 | See `dnd-protocol-alist' for more information. When nil, behave |
| 1277 | as in other buffers." |
| 1278 | :type '(choice (repeat (cons (regexp) (function))) |
| 1279 | (const :tag "Behave as in other buffers" nil)) |
| 1280 | :version "22.1" ;; Gnus 5.10.9 |
| 1281 | :group 'message) |
| 1282 | |
| 1283 | (defcustom mml-dnd-attach-options nil |
| 1284 | "Which options should be queried when attaching a file via drag and drop. |
| 1285 | |
| 1286 | If it is a list, valid members are `type', `description' and |
| 1287 | `disposition'. `disposition' implies `type'. If it is nil, |
| 1288 | don't ask for options. If it is t, ask the user whether or not |
| 1289 | to specify options." |
| 1290 | :type '(choice |
| 1291 | (const :tag "None" nil) |
| 1292 | (const :tag "Query" t) |
| 1293 | (list :value (type description disposition) |
| 1294 | (set :inline t |
| 1295 | (const type) |
| 1296 | (const description) |
| 1297 | (const disposition)))) |
| 1298 | :version "22.1" ;; Gnus 5.10.9 |
| 1299 | :group 'message) |
| 1300 | |
| 1301 | ;;;###autoload |
| 1302 | (defun mml-attach-file (file &optional type description disposition) |
| 1303 | "Attach a file to the outgoing MIME message. |
| 1304 | The file is not inserted or encoded until you send the message with |
| 1305 | `\\[message-send-and-exit]' or `\\[message-send]'. |
| 1306 | |
| 1307 | FILE is the name of the file to attach. TYPE is its |
| 1308 | content-type, a string of the form \"type/subtype\". DESCRIPTION |
| 1309 | is a one-line description of the attachment. The DISPOSITION |
| 1310 | specifies how the attachment is intended to be displayed. It can |
| 1311 | be either \"inline\" (displayed automatically within the message |
| 1312 | body) or \"attachment\" (separate from the body)." |
| 1313 | (interactive |
| 1314 | (let* ((file (mml-minibuffer-read-file "Attach file: ")) |
| 1315 | (type (mml-minibuffer-read-type file)) |
| 1316 | (description (mml-minibuffer-read-description)) |
| 1317 | (disposition (mml-minibuffer-read-disposition type nil file))) |
| 1318 | (list file type description disposition))) |
| 1319 | ;; Don't move point if this command is invoked inside the message header. |
| 1320 | (let ((head (unless (message-in-body-p) |
| 1321 | (prog1 |
| 1322 | (point) |
| 1323 | (goto-char (point-max)))))) |
| 1324 | (mml-insert-empty-tag 'part |
| 1325 | 'type type |
| 1326 | ;; icicles redefines read-file-name and returns a |
| 1327 | ;; string w/ text properties :-/ |
| 1328 | 'filename (mm-substring-no-properties file) |
| 1329 | 'disposition (or disposition "attachment") |
| 1330 | 'description description) |
| 1331 | (when head |
| 1332 | (unless (prog1 |
| 1333 | (pos-visible-in-window-p) |
| 1334 | (goto-char head)) |
| 1335 | (message "The file \"%s\" has been attached at the end of the message" |
| 1336 | (file-name-nondirectory file)))))) |
| 1337 | |
| 1338 | (defun mml-dnd-attach-file (uri action) |
| 1339 | "Attach a drag and drop file. |
| 1340 | |
| 1341 | Ask for type, description or disposition according to |
| 1342 | `mml-dnd-attach-options'." |
| 1343 | (let ((file (dnd-get-local-file-name uri t))) |
| 1344 | (when (and file (file-regular-p file)) |
| 1345 | (let ((mml-dnd-attach-options mml-dnd-attach-options) |
| 1346 | type description disposition) |
| 1347 | (setq mml-dnd-attach-options |
| 1348 | (when (and (eq mml-dnd-attach-options t) |
| 1349 | (not |
| 1350 | (y-or-n-p |
| 1351 | "Use default type, disposition and description? "))) |
| 1352 | '(type description disposition))) |
| 1353 | (when (or (memq 'type mml-dnd-attach-options) |
| 1354 | (memq 'disposition mml-dnd-attach-options)) |
| 1355 | (setq type (mml-minibuffer-read-type file))) |
| 1356 | (when (memq 'description mml-dnd-attach-options) |
| 1357 | (setq description (mml-minibuffer-read-description))) |
| 1358 | (when (memq 'disposition mml-dnd-attach-options) |
| 1359 | (setq disposition (mml-minibuffer-read-disposition type nil file))) |
| 1360 | (mml-attach-file file type description disposition))))) |
| 1361 | |
| 1362 | (defun mml-attach-buffer (buffer &optional type description disposition) |
| 1363 | "Attach a buffer to the outgoing MIME message. |
| 1364 | BUFFER is the name of the buffer to attach. See |
| 1365 | `mml-attach-file' for details of operation." |
| 1366 | (interactive |
| 1367 | (let* ((buffer (read-buffer "Attach buffer: ")) |
| 1368 | (type (mml-minibuffer-read-type buffer "text/plain")) |
| 1369 | (description (mml-minibuffer-read-description)) |
| 1370 | (disposition (mml-minibuffer-read-disposition type nil))) |
| 1371 | (list buffer type description disposition))) |
| 1372 | ;; Don't move point if this command is invoked inside the message header. |
| 1373 | (let ((head (unless (message-in-body-p) |
| 1374 | (prog1 |
| 1375 | (point) |
| 1376 | (goto-char (point-max)))))) |
| 1377 | (mml-insert-empty-tag 'part 'type type 'buffer buffer |
| 1378 | 'disposition disposition |
| 1379 | 'description description) |
| 1380 | (when head |
| 1381 | (unless (prog1 |
| 1382 | (pos-visible-in-window-p) |
| 1383 | (goto-char head)) |
| 1384 | (message |
| 1385 | "The buffer \"%s\" has been attached at the end of the message" |
| 1386 | buffer))))) |
| 1387 | |
| 1388 | (defun mml-attach-external (file &optional type description) |
| 1389 | "Attach an external file into the buffer. |
| 1390 | FILE is an ange-ftp/efs specification of the part location. |
| 1391 | TYPE is the MIME type to use." |
| 1392 | (interactive |
| 1393 | (let* ((file (mml-minibuffer-read-file "Attach external file: ")) |
| 1394 | (type (mml-minibuffer-read-type file)) |
| 1395 | (description (mml-minibuffer-read-description))) |
| 1396 | (list file type description))) |
| 1397 | ;; Don't move point if this command is invoked inside the message header. |
| 1398 | (let ((head (unless (message-in-body-p) |
| 1399 | (prog1 |
| 1400 | (point) |
| 1401 | (goto-char (point-max)))))) |
| 1402 | (mml-insert-empty-tag 'external 'type type 'name file |
| 1403 | 'disposition "attachment" 'description description) |
| 1404 | (when head |
| 1405 | (unless (prog1 |
| 1406 | (pos-visible-in-window-p) |
| 1407 | (goto-char head)) |
| 1408 | (message "The file \"%s\" has been attached at the end of the message" |
| 1409 | (file-name-nondirectory file)))))) |
| 1410 | |
| 1411 | (defun mml-insert-multipart (&optional type) |
| 1412 | (interactive (if (message-in-body-p) |
| 1413 | (list (gnus-completing-read "Multipart type" |
| 1414 | '("mixed" "alternative" |
| 1415 | "digest" "parallel" |
| 1416 | "signed" "encrypted") |
| 1417 | nil "mixed")) |
| 1418 | (error "Use this command in the message body"))) |
| 1419 | (or type |
| 1420 | (setq type "mixed")) |
| 1421 | (mml-insert-empty-tag "multipart" 'type type) |
| 1422 | (forward-line -1)) |
| 1423 | |
| 1424 | (defun mml-insert-part (&optional type) |
| 1425 | (interactive (if (message-in-body-p) |
| 1426 | (list (mml-minibuffer-read-type "")) |
| 1427 | (error "Use this command in the message body"))) |
| 1428 | (mml-insert-tag 'part 'type type 'disposition "inline")) |
| 1429 | |
| 1430 | (declare-function message-subscribed-p "message" ()) |
| 1431 | (declare-function message-make-mail-followup-to "message" |
| 1432 | (&optional only-show-subscribed)) |
| 1433 | (declare-function message-position-on-field "message" (header &rest afters)) |
| 1434 | |
| 1435 | (defun mml-preview-insert-mail-followup-to () |
| 1436 | "Insert a Mail-Followup-To header before previewing an article. |
| 1437 | Should be adopted if code in `message-send-mail' is changed." |
| 1438 | (when (and (message-mail-p) |
| 1439 | (message-subscribed-p) |
| 1440 | (not (mail-fetch-field "mail-followup-to")) |
| 1441 | (message-make-mail-followup-to)) |
| 1442 | (message-position-on-field "Mail-Followup-To" "X-Draft-From") |
| 1443 | (insert (message-make-mail-followup-to)))) |
| 1444 | |
| 1445 | (defvar mml-preview-buffer nil) |
| 1446 | |
| 1447 | (autoload 'gnus-make-hashtable "gnus-util") |
| 1448 | (autoload 'widget-button-press "wid-edit" nil t) |
| 1449 | (declare-function widget-event-point "wid-edit" (event)) |
| 1450 | ;; If gnus-buffer-configuration is bound this is loaded. |
| 1451 | (declare-function gnus-configure-windows "gnus-win" (setting &optional force)) |
| 1452 | ;; Called after message-mail-p, which autoloads message. |
| 1453 | (declare-function message-news-p "message" ()) |
| 1454 | (declare-function message-options-set-recipient "message" ()) |
| 1455 | (declare-function message-generate-headers "message" (headers)) |
| 1456 | (declare-function message-sort-headers "message" ()) |
| 1457 | |
| 1458 | (defun mml-preview (&optional raw) |
| 1459 | "Display current buffer with Gnus, in a new buffer. |
| 1460 | If RAW, display a raw encoded MIME message. |
| 1461 | |
| 1462 | The window layout for the preview buffer is controlled by the variables |
| 1463 | `special-display-buffer-names', `special-display-regexps', or |
| 1464 | `gnus-buffer-configuration' (the first match made will be used), |
| 1465 | or the `pop-to-buffer' function." |
| 1466 | (interactive "P") |
| 1467 | (setq mml-preview-buffer (generate-new-buffer |
| 1468 | (concat (if raw "*Raw MIME preview of " |
| 1469 | "*MIME preview of ") (buffer-name)))) |
| 1470 | (require 'gnus-msg) ; for gnus-setup-posting-charset |
| 1471 | (save-excursion |
| 1472 | (let* ((buf (current-buffer)) |
| 1473 | (article-editing (eq major-mode 'gnus-article-edit-mode)) |
| 1474 | (message-options message-options) |
| 1475 | (message-this-is-mail (message-mail-p)) |
| 1476 | (message-this-is-news (message-news-p)) |
| 1477 | (message-posting-charset (or (gnus-setup-posting-charset |
| 1478 | (save-restriction |
| 1479 | (message-narrow-to-headers-or-head) |
| 1480 | (message-fetch-field "Newsgroups"))) |
| 1481 | message-posting-charset))) |
| 1482 | (message-options-set-recipient) |
| 1483 | (when (boundp 'gnus-buffers) |
| 1484 | (push mml-preview-buffer gnus-buffers)) |
| 1485 | (save-restriction |
| 1486 | (widen) |
| 1487 | (set-buffer mml-preview-buffer) |
| 1488 | (erase-buffer) |
| 1489 | (insert-buffer-substring buf)) |
| 1490 | (mml-preview-insert-mail-followup-to) |
| 1491 | (let ((message-deletable-headers (if (message-news-p) |
| 1492 | nil |
| 1493 | message-deletable-headers)) |
| 1494 | (mail-header-separator (if article-editing |
| 1495 | "" |
| 1496 | mail-header-separator))) |
| 1497 | (message-generate-headers |
| 1498 | (copy-sequence (if (message-news-p) |
| 1499 | message-required-news-headers |
| 1500 | message-required-mail-headers))) |
| 1501 | (unless article-editing |
| 1502 | (if (re-search-forward |
| 1503 | (concat "^" (regexp-quote mail-header-separator) "\n") nil t) |
| 1504 | (replace-match "\n")) |
| 1505 | (setq mail-header-separator "")) |
| 1506 | (message-sort-headers) |
| 1507 | (mml-to-mime)) |
| 1508 | (if raw |
| 1509 | (when (fboundp 'set-buffer-multibyte) |
| 1510 | (let ((s (buffer-string))) |
| 1511 | ;; Insert the content into unibyte buffer. |
| 1512 | (erase-buffer) |
| 1513 | (mm-disable-multibyte) |
| 1514 | (insert s))) |
| 1515 | (let ((gnus-newsgroup-charset (car message-posting-charset)) |
| 1516 | gnus-article-prepare-hook gnus-original-article-buffer |
| 1517 | gnus-displaying-mime) |
| 1518 | (run-hooks 'gnus-article-decode-hook) |
| 1519 | (let ((gnus-newsgroup-name "dummy") |
| 1520 | (gnus-newsrc-hashtb (or gnus-newsrc-hashtb |
| 1521 | (gnus-make-hashtable 5)))) |
| 1522 | (gnus-article-prepare-display)))) |
| 1523 | ;; Disable article-mode-map. |
| 1524 | (use-local-map nil) |
| 1525 | (gnus-make-local-hook 'kill-buffer-hook) |
| 1526 | (add-hook 'kill-buffer-hook |
| 1527 | (lambda () |
| 1528 | (mm-destroy-parts gnus-article-mime-handles)) nil t) |
| 1529 | (setq buffer-read-only t) |
| 1530 | (local-set-key "q" (lambda () (interactive) (kill-buffer nil))) |
| 1531 | (local-set-key "=" (lambda () (interactive) (delete-other-windows))) |
| 1532 | (local-set-key "\r" |
| 1533 | (lambda () |
| 1534 | (interactive) |
| 1535 | (widget-button-press (point)))) |
| 1536 | (local-set-key gnus-mouse-2 |
| 1537 | (lambda (event) |
| 1538 | (interactive "@e") |
| 1539 | (widget-button-press (widget-event-point event) event))) |
| 1540 | ;; FIXME: Buffer is in article mode, but most tool bar commands won't |
| 1541 | ;; work. Maybe only keep the following icons: search, print, quit |
| 1542 | (goto-char (point-min)))) |
| 1543 | (if (and (not (mm-special-display-p (buffer-name mml-preview-buffer))) |
| 1544 | (boundp 'gnus-buffer-configuration) |
| 1545 | (assq 'mml-preview gnus-buffer-configuration)) |
| 1546 | (let ((gnus-message-buffer (current-buffer))) |
| 1547 | (gnus-configure-windows 'mml-preview)) |
| 1548 | (pop-to-buffer mml-preview-buffer))) |
| 1549 | |
| 1550 | (defun mml-validate () |
| 1551 | "Validate the current MML document." |
| 1552 | (interactive) |
| 1553 | (mml-parse)) |
| 1554 | |
| 1555 | (defun mml-tweak-part (cont) |
| 1556 | "Tweak a MML part." |
| 1557 | (let ((tweak (cdr (assq 'tweak cont))) |
| 1558 | func) |
| 1559 | (cond |
| 1560 | (tweak |
| 1561 | (setq func |
| 1562 | (or (cdr (assoc tweak mml-tweak-function-alist)) |
| 1563 | (intern tweak)))) |
| 1564 | (mml-tweak-type-alist |
| 1565 | (let ((alist mml-tweak-type-alist) |
| 1566 | (type (or (cdr (assq 'type cont)) "text/plain"))) |
| 1567 | (while alist |
| 1568 | (if (string-match (caar alist) type) |
| 1569 | (setq func (cdar alist) |
| 1570 | alist nil) |
| 1571 | (setq alist (cdr alist))))))) |
| 1572 | (if func |
| 1573 | (funcall func cont) |
| 1574 | cont) |
| 1575 | (let ((alist mml-tweak-sexp-alist)) |
| 1576 | (while alist |
| 1577 | (if (eval (caar alist)) |
| 1578 | (funcall (cdar alist) cont)) |
| 1579 | (setq alist (cdr alist))))) |
| 1580 | cont) |
| 1581 | |
| 1582 | (defun mml-tweak-externalize-attachments (cont) |
| 1583 | "Tweak attached files as external parts." |
| 1584 | (let (filename-cons) |
| 1585 | (when (and (eq (car cont) 'part) |
| 1586 | (not (cdr (assq 'buffer cont))) |
| 1587 | (and (setq filename-cons (assq 'filename cont)) |
| 1588 | (not (equal (cdr (assq 'nofile cont)) "yes")))) |
| 1589 | (setcar cont 'external) |
| 1590 | (setcar filename-cons 'name)))) |
| 1591 | |
| 1592 | (provide 'mml) |
| 1593 | |
| 1594 | ;;; mml.el ends here |