HCoop / bpt / emacs.git / blame
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1 | ;;; spam-wash.el --- wash spam before analysis |
| 2 | ||
| 73b0cd50 | 3 | ;; Copyright (C) 2004, 2007-2011 Free Software Foundation, Inc. |
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4 | |
| 5 | ;; Author: Andrew Cohen <cohen@andy.bu.edu> | |
| 6 | ;; Keywords: mail | |
| 7 | ||
| 8 | ;; This file is part of GNU Emacs. | |
| 9 | ||
| 5e809f55 | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| 62961127 | 11 | ;; it under the terms of the GNU General Public License as published by |
| 5e809f55 GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
| 13 | ;; (at your option) any later version. | |
| 01c52d31 | 14 | |
| 62961127 GM |
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. | |
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19 | |
| 20 | ;; You should have received a copy of the GNU General Public License | |
| 5e809f55 | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
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22 | |
| 23 | ;;; Commentary: | |
| 24 | ||
| 25 | ;; This library decodes MIME encodings such as base64 and | |
| 26 | ;; quoted-printable to allow for better spam analysis. | |
| 27 | ;; | |
| 28 | ;; `spam-wash' should be called in a buffer containing the message. | |
| 29 | ||
| 30 | ;;; Code: | |
| 31 | ||
| 32 | (require 'gnus-art) | |
| 33 | ||
| 34 | (defun spam-wash () | |
| 35 | "Treat the current buffer prior to spam analysis." | |
| 36 | (interactive) | |
| 37 | (run-hooks 'gnus-article-decode-hook) | |
| 38 | (save-excursion | |
| 39 | (save-restriction | |
| 40 | (let* ((buffer-read-only nil) | |
| 41 | (gnus-inhibit-treatment t) | |
| 42 | (gnus-article-buffer (current-buffer)) | |
| 43 | (handles (or (mm-dissect-buffer nil gnus-article-loose-mime) | |
| 44 | (and gnus-article-emulate-mime | |
| 45 | (mm-uu-dissect)))) | |
| 46 | handle) | |
| 47 | (when gnus-article-mime-handles | |
| 48 | (mm-destroy-parts gnus-article-mime-handles) | |
| 49 | (setq gnus-article-mime-handle-alist nil)) | |
| 50 | (setq gnus-article-mime-handles handles) | |
| 51 | (when (and handles | |
| 52 | (or (not (stringp (car handles))) | |
| 53 | (cdr handles))) | |
| 54 | (article-goto-body) | |
| 55 | (delete-region (point) (point-max)) | |
| 56 | (spam-treat-parts handles)))))) | |
| 57 | ||
| 58 | (defun spam-treat-parts (handle) | |
| 59 | (if (stringp (car handle)) | |
| 60 | (mapcar 'spam-treat-parts (cdr handle)) | |
| 61 | (if (bufferp (car handle)) | |
| 62 | (save-restriction | |
| 63 | (narrow-to-region (point) (point)) | |
| 64 | (when (let ((case-fold-search t)) | |
| 65 | (string-match "text" (car (mm-handle-type handle)))) | |
| 66 | (mm-insert-part handle)) | |
| 67 | (goto-char (point-max))) | |
| 68 | (mapcar 'spam-treat-parts handle)))) | |
| 69 | ||
| 70 | (provide 'spam-wash) | |
| 71 | ||
| 01c52d31 | 72 | ;;; spam-wash.el ends here |