1 ;;; spam.el --- Identifying spam
2 ;; Copyright (C) 2002 Free Software Foundation, Inc.
4 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
7 ;; This file is part of GNU Emacs.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
26 ;;; This module addresses a few aspects of spam control under Gnus. Page
27 ;;; breaks are used for grouping declarations and documentation relating to
28 ;;; each particular aspect.
30 ;;; The integration with Gnus is not yet complete. See various `FIXME'
31 ;;; comments, below, for supplementary explanations or discussions.
33 ;;; Several TODO items are marked as such
39 (require 'gnus-uu) ; because of key prefix issues
40 (require 'gnus) ; for the definitions of group content classification and spam processors
41 (require 'message) ;for the message-fetch-field functions
43 ;; autoload executable-find
45 ;; executable-find is not autoloaded in Emacs 20
46 (autoload 'executable-find "executable"))
50 (autoload 'query-dig "dig"))
54 (autoload 'query-dns "dns"))
59 "Spam configuration.")
61 (defcustom spam-directory "~/News/spam/"
62 "Directory for spam whitelists and blacklists."
66 (defcustom spam-move-spam-nonspam-groups-only t
67 "Whether spam should be moved in non-spam groups only.
68 When nil, only ham and unclassified groups will have their spam moved
69 to the spam-process-destination. When t, spam will also be moved from
74 (defcustom spam-whitelist (expand-file-name "whitelist" spam-directory)
75 "The location of the whitelist.
76 The file format is one regular expression per line.
77 The regular expression is matched against the address."
81 (defcustom spam-blacklist (expand-file-name "blacklist" spam-directory)
82 "The location of the blacklist.
83 The file format is one regular expression per line.
84 The regular expression is matched against the address."
88 (defcustom spam-use-dig t
89 "Whether query-dig should be used instead of query-dns."
93 (defcustom spam-use-blacklist nil
94 "Whether the blacklist should be used by spam-split."
98 (defcustom spam-use-whitelist nil
99 "Whether the whitelist should be used by spam-split."
103 (defcustom spam-use-blackholes nil
104 "Whether blackholes should be used by spam-split."
108 (defcustom spam-use-regex-headers nil
109 "Whether a header regular expression match should be used by spam-split.
110 Also see the variable `spam-spam-regex-headers' and `spam-ham-regex-headers'."
114 (defcustom spam-use-bogofilter-headers nil
115 "Whether bogofilter headers should be used by spam-split.
116 Enable this if you pre-process messages with Bogofilter BEFORE Gnus sees them."
120 (defcustom spam-use-bogofilter nil
121 "Whether bogofilter should be invoked by spam-split.
122 Enable this if you want Gnus to invoke Bogofilter on new messages."
126 (defcustom spam-use-BBDB nil
127 "Whether BBDB should be used by spam-split."
131 (defcustom spam-use-ifile nil
132 "Whether ifile should be used by spam-split."
136 (defcustom spam-use-stat nil
137 "Whether spam-stat should be used by spam-split."
141 (defcustom spam-split-group "spam"
142 "Group name where incoming spam should be put by spam-split."
146 (defcustom spam-junk-mailgroups (cons spam-split-group '("mail.junk" "poste.pourriel"))
147 "Mailgroups with spam contents.
148 All unmarked article in such group receive the spam mark on group entry."
149 :type '(repeat (string :tag "Group"))
152 (defcustom spam-blackhole-servers '("bl.spamcop.net" "relays.ordb.org"
153 "dev.null.dk" "relays.visi.com")
154 "List of blackhole servers."
155 :type '(repeat (string :tag "Server"))
158 (defcustom spam-blackhole-good-server-regex nil
159 "String matching IP addresses that should not be checked in the blackholes"
163 (defcustom spam-ham-marks (list 'gnus-del-mark 'gnus-read-mark
164 'gnus-killed-mark 'gnus-kill-file-mark
165 'gnus-low-score-mark)
166 "Marks considered as being ham (positively not spam).
167 Such articles will be processed as ham (non-spam) on group exit."
169 (variable-item gnus-del-mark)
170 (variable-item gnus-read-mark)
171 (variable-item gnus-killed-mark)
172 (variable-item gnus-kill-file-mark)
173 (variable-item gnus-low-score-mark))
176 (defcustom spam-spam-marks (list 'gnus-spam-mark)
177 "Marks considered as being spam (positively spam).
178 Such articles will be transmitted to `bogofilter -s' on group exit."
180 (variable-item gnus-spam-mark)
181 (variable-item gnus-killed-mark)
182 (variable-item gnus-kill-file-mark)
183 (variable-item gnus-low-score-mark))
186 (defcustom spam-face 'gnus-splash-face
187 "Face for spam-marked articles"
191 (defcustom spam-regex-headers-spam '("^X-Spam-Flag: YES")
192 "Regular expression for positive header spam matches"
193 :type '(repeat (regexp :tag "Regular expression to match spam header"))
196 (defcustom spam-regex-headers-ham '("^X-Spam-Flag: NO")
197 "Regular expression for positive header ham matches"
198 :type '(repeat (regexp :tag "Regular expression to match ham header"))
201 (defgroup spam-ifile nil
202 "Spam ifile configuration."
205 (defcustom spam-ifile-path (executable-find "ifile")
206 "File path of the ifile executable program."
207 :type '(choice (file :tag "Location of ifile")
208 (const :tag "ifile is not installed"))
211 (defcustom spam-ifile-database-path nil
212 "File path of the ifile database."
213 :type '(choice (file :tag "Location of the ifile database")
214 (const :tag "Use the default"))
217 (defcustom spam-ifile-spam-category "spam"
218 "Name of the spam ifile category."
222 (defcustom spam-ifile-ham-category nil
223 "Name of the ham ifile category. If nil, the current group name will
225 :type '(choice (string :tag "Use a fixed category")
226 (const :tag "Use the current group name"))
229 (defcustom spam-ifile-all-categories nil
230 "Whether the ifile check will return all categories, or just spam.
231 Set this to t if you want to use the spam-split invocation of ifile as
232 your main source of newsgroup names."
236 (defgroup spam-bogofilter nil
237 "Spam bogofilter configuration."
240 (defcustom spam-bogofilter-path (executable-find "bogofilter")
241 "File path of the Bogofilter executable program."
242 :type '(choice (file :tag "Location of bogofilter")
243 (const :tag "Bogofilter is not installed"))
244 :group 'spam-bogofilter)
246 (defcustom spam-bogofilter-header "X-Bogosity"
247 "The header that Bogofilter inserts in messages."
249 :group 'spam-bogofilter)
251 (defcustom spam-bogofilter-database-directory nil
252 "Directory path of the Bogofilter databases."
253 :type '(choice (directory :tag "Location of the Bogofilter database directory")
254 (const :tag "Use the default"))
257 ;;; Key bindings for spam control.
259 (gnus-define-keys gnus-summary-mode-map
260 "St" spam-bogofilter-score
261 "Sx" gnus-summary-mark-as-spam
262 "Mst" spam-bogofilter-score
263 "Msx" gnus-summary-mark-as-spam
264 "\M-d" gnus-summary-mark-as-spam)
266 ;;; How to highlight a spam summary line.
268 ;; TODO: How do we redo this every time spam-face is customized?
270 (push '((eq mark gnus-spam-mark) . spam-face)
271 gnus-summary-highlight)
273 ;; convenience functions
274 (defun spam-group-spam-contents-p (group)
276 (or (member group spam-junk-mailgroups)
277 (memq 'gnus-group-spam-classification-spam
278 (gnus-parameter-spam-contents group)))
281 (defun spam-group-ham-contents-p (group)
283 (memq 'gnus-group-spam-classification-ham
284 (gnus-parameter-spam-contents group))
287 (defun spam-group-processor-p (group processor)
288 (if (and (stringp group)
290 (member processor (car (gnus-parameter-spam-process group)))
293 (defun spam-group-spam-processor-bogofilter-p (group)
294 (spam-group-processor-p group 'gnus-group-spam-exit-processor-bogofilter))
296 (defun spam-group-spam-processor-blacklist-p (group)
297 (spam-group-processor-p group 'gnus-group-spam-exit-processor-blacklist))
299 (defun spam-group-spam-processor-ifile-p (group)
300 (spam-group-processor-p group 'gnus-group-spam-exit-processor-ifile))
302 (defun spam-group-ham-processor-ifile-p (group)
303 (spam-group-processor-p group 'gnus-group-ham-exit-processor-ifile))
305 (defun spam-group-ham-processor-bogofilter-p (group)
306 (spam-group-processor-p group 'gnus-group-ham-exit-processor-bogofilter))
308 (defun spam-group-spam-processor-stat-p (group)
309 (spam-group-processor-p group 'gnus-group-spam-exit-processor-stat))
311 (defun spam-group-ham-processor-stat-p (group)
312 (spam-group-processor-p group 'gnus-group-ham-exit-processor-stat))
314 (defun spam-group-ham-processor-whitelist-p (group)
315 (spam-group-processor-p group 'gnus-group-ham-exit-processor-whitelist))
317 (defun spam-group-ham-processor-BBDB-p (group)
318 (spam-group-processor-p group 'gnus-group-ham-exit-processor-BBDB))
320 ;;; Summary entry and exit processing.
322 (defun spam-summary-prepare ()
323 (spam-mark-junk-as-spam-routine))
325 (add-hook 'gnus-summary-prepare-hook 'spam-summary-prepare)
327 (defun spam-summary-prepare-exit ()
328 ;; The spam processors are invoked for any group, spam or ham or neither
329 (gnus-message 6 "Exiting summary buffer and applying spam rules")
330 (when (and spam-bogofilter-path
331 (spam-group-spam-processor-bogofilter-p gnus-newsgroup-name))
332 (gnus-message 5 "Registering spam with bogofilter")
333 (spam-bogofilter-register-spam-routine))
335 (when (and spam-ifile-path
336 (spam-group-spam-processor-ifile-p gnus-newsgroup-name))
337 (gnus-message 5 "Registering spam with ifile")
338 (spam-ifile-register-spam-routine))
340 (when (spam-group-spam-processor-stat-p gnus-newsgroup-name)
341 (gnus-message 5 "Registering spam with spam-stat")
342 (spam-stat-register-spam-routine))
344 (when (spam-group-spam-processor-blacklist-p gnus-newsgroup-name)
345 (gnus-message 5 "Registering spam with the blacklist")
346 (spam-blacklist-register-routine))
348 (if spam-move-spam-nonspam-groups-only
349 (when (not (spam-group-spam-contents-p gnus-newsgroup-name))
350 (spam-mark-spam-as-expired-and-move-routine
351 (gnus-parameter-spam-process-destination gnus-newsgroup-name)))
352 (gnus-message 5 "Marking spam as expired and moving it")
353 (spam-mark-spam-as-expired-and-move-routine
354 (gnus-parameter-spam-process-destination gnus-newsgroup-name)))
356 ;; now we redo spam-mark-spam-as-expired-and-move-routine to only
357 ;; expire spam, in case the above did not expire them
358 (spam-mark-spam-as-expired-and-move-routine nil)
360 (when (spam-group-ham-contents-p gnus-newsgroup-name)
361 (when (spam-group-ham-processor-whitelist-p gnus-newsgroup-name)
362 (gnus-message 5 "Registering ham with the whitelist")
363 (spam-whitelist-register-routine))
364 (when (spam-group-ham-processor-ifile-p gnus-newsgroup-name)
365 (gnus-message 5 "Registering ham with ifile")
366 (spam-ifile-register-ham-routine))
367 (when (spam-group-ham-processor-bogofilter-p gnus-newsgroup-name)
368 (gnus-message 5 "Registering ham with Bogofilter")
369 (spam-bogofilter-register-ham-routine))
370 (when (spam-group-ham-processor-stat-p gnus-newsgroup-name)
371 (gnus-message 5 "Registering ham with spam-stat")
372 (spam-stat-register-ham-routine))
373 (when (spam-group-ham-processor-BBDB-p gnus-newsgroup-name)
374 (gnus-message 5 "Registering ham with the BBDB")
375 (spam-BBDB-register-routine)))
377 ;; now move all ham articles out of spam groups
378 (when (spam-group-spam-contents-p gnus-newsgroup-name)
379 (gnus-message 5 "Moving ham messages from spam group")
380 (spam-ham-move-routine
381 (gnus-parameter-ham-process-destination gnus-newsgroup-name))))
383 (add-hook 'gnus-summary-prepare-exit-hook 'spam-summary-prepare-exit)
385 (defun spam-mark-junk-as-spam-routine ()
386 ;; check the global list of group names spam-junk-mailgroups and the
388 (when (spam-group-spam-contents-p gnus-newsgroup-name)
389 (gnus-message 5 "Marking unread articles as spam")
390 (let ((articles gnus-newsgroup-articles)
393 (setq article (pop articles))
394 (when (eq (gnus-summary-article-mark article) gnus-unread-mark)
395 (gnus-summary-mark-article article gnus-spam-mark))))))
397 (defun spam-mark-spam-as-expired-and-move-routine (&optional group)
398 (let ((articles gnus-newsgroup-articles)
401 (setq article (pop articles))
402 (when (eq (gnus-summary-article-mark article) gnus-spam-mark)
403 (gnus-summary-mark-article article gnus-expirable-mark)
404 (when (stringp group)
405 (let ((gnus-current-article article))
406 (gnus-summary-move-article nil group)))))))
408 (defun spam-ham-move-routine (&optional group)
409 (let ((articles gnus-newsgroup-articles)
410 article ham-mark-values mark)
411 (dolist (mark spam-ham-marks)
412 (push (symbol-value mark) ham-mark-values))
415 (setq article (pop articles))
416 (when (and (memq mark ham-mark-values)
418 (let ((gnus-current-article article))
419 (gnus-summary-move-article nil group))))))
421 (defun spam-generic-register-routine (spam-func ham-func)
422 (let ((articles gnus-newsgroup-articles)
423 article mark ham-articles spam-articles spam-mark-values
426 ;; marks are stored as symbolic values, so we have to dereference
427 ;; them for memq to work. we wouldn't have to do this if
428 ;; gnus-summary-article-mark returned a symbol.
429 (dolist (mark spam-ham-marks)
430 (push (symbol-value mark) ham-mark-values))
432 (dolist (mark spam-spam-marks)
433 (push (symbol-value mark) spam-mark-values))
436 (setq article (pop articles)
437 mark (gnus-summary-article-mark article))
438 (cond ((memq mark spam-mark-values) (push article spam-articles))
439 ((memq article gnus-newsgroup-saved))
440 ((memq mark ham-mark-values) (push article ham-articles))))
441 (when (and ham-articles ham-func)
442 (mapc ham-func ham-articles)) ; we use mapc because unlike
443 ; mapcar it discards the
445 (when (and spam-articles spam-func)
446 (mapc spam-func spam-articles)))) ; we use mapc because unlike
447 ; mapcar it discards the
451 (defalias 'spam-point-at-eol (if (fboundp 'point-at-eol)
453 'line-end-position)))
455 (defun spam-get-article-as-string (article)
456 (let ((article-buffer (spam-get-article-as-buffer article))
459 (save-window-excursion
460 (set-buffer article-buffer)
461 (setq article-string (buffer-string))))
464 (defun spam-get-article-as-buffer (article)
465 (let ((article-buffer))
466 (when (numberp article)
467 (save-window-excursion
468 (gnus-summary-goto-subject article)
469 (gnus-summary-show-article t)
470 (setq article-buffer (get-buffer gnus-article-buffer))))
473 (defun spam-get-article-as-filename (article)
474 (let ((article-filename))
475 (when (numberp article)
476 (nnml-possibly-change-directory (gnus-group-real-name gnus-newsgroup-name))
477 (setq article-filename (expand-file-name (int-to-string article) nnml-current-directory)))
478 (if (file-exists-p article-filename)
482 (defun spam-fetch-field-from-fast (article)
483 "Fetch the `from' field quickly, using the internal gnus-data-list function"
484 (if (and (numberp article)
485 (assoc article (gnus-data-list nil)))
486 (mail-header-from (gnus-data-header (assoc article (gnus-data-list nil))))
489 (defun spam-fetch-field-subject-fast (article)
490 "Fetch the `subject' field quickly, using the internal gnus-data-list function"
491 (if (and (numberp article)
492 (assoc article (gnus-data-list nil)))
493 (mail-header-subject (gnus-data-header (assoc article (gnus-data-list nil))))
497 ;;;; Spam determination.
499 (defvar spam-list-of-checks
500 '((spam-use-blacklist . spam-check-blacklist)
501 (spam-use-regex-headers . spam-check-regex-headers)
502 (spam-use-whitelist . spam-check-whitelist)
503 (spam-use-BBDB . spam-check-BBDB)
504 (spam-use-ifile . spam-check-ifile)
505 (spam-use-stat . spam-check-stat)
506 (spam-use-blackholes . spam-check-blackholes)
507 (spam-use-bogofilter-headers . spam-check-bogofilter-headers)
508 (spam-use-bogofilter . spam-check-bogofilter))
509 "The spam-list-of-checks list contains pairs associating a parameter
510 variable with a spam checking function. If the parameter variable is
511 true, then the checking function is called, and its value decides what
512 happens. Each individual check may return `nil', `t', or a mailgroup
513 name. The value `nil' means that the check does not yield a decision,
514 and so, that further checks are needed. The value `t' means that the
515 message is definitely not spam, and that further spam checks should be
516 inhibited. Otherwise, a mailgroup name is returned where the mail
517 should go, and further checks are also inhibited. The usual mailgroup
518 name is the value of `spam-split-group', meaning that the message is
522 "Split this message into the `spam' group if it is spam.
523 This function can be used as an entry in `nnmail-split-fancy', for
524 example like this: (: spam-split)
526 See the Info node `(gnus)Fancy Mail Splitting' for more details."
529 ;; load the spam-stat tables if needed
530 (when spam-use-stat (spam-stat-load))
532 (let ((list-of-checks spam-list-of-checks)
534 (while (and list-of-checks (not decision))
535 (let ((pair (pop list-of-checks)))
536 (when (symbol-value (car pair))
537 (gnus-message 5 "spam-split: calling the %s function" (symbol-name (cdr pair)))
538 (setq decision (funcall (cdr pair))))))
545 (defun spam-check-regex-headers ()
547 (dolist (h-regex spam-regex-headers-ham)
549 (goto-char (point-min))
550 (when (re-search-forward h-regex nil t)
551 (message "Ham regex header search positive.")
553 (dolist (s-regex spam-regex-headers-spam)
555 (goto-char (point-min))
556 (when (re-search-forward s-regex nil t)
557 (message "Spam regex header search positive." (match-string 1))
559 (setq ret spam-split-group))))
565 (defun spam-check-blackholes ()
566 "Check the Received headers for blackholed relays."
567 (let ((headers (message-fetch-field "received"))
572 (goto-char (point-min))
573 (gnus-message 5 "Checking headers for relay addresses")
574 (while (re-search-forward
575 "\\[\\([0-9]+.[0-9]+.[0-9]+.[0-9]+\\)\\]" nil t)
576 (gnus-message 9 "Blackhole search found host IP %s." (match-string 1))
577 (push (mapconcat 'identity
578 (nreverse (split-string (match-string 1) "\\."))
581 (dolist (server spam-blackhole-servers)
583 (unless (and spam-blackhole-good-server-regex
584 (string-match spam-blackhole-good-server-regex ip))
585 (let ((query-string (concat ip "." server)))
587 (let ((query-result (query-dig query-string)))
589 (gnus-message 5 "(DIG): positive blackhole check '%s'" query-result)
590 (push (list ip server query-result)
592 ;; else, if not using dig.el
593 (when (query-dns query-string)
594 (gnus-message 5 "positive blackhole check")
595 (push (list ip server (query-dns query-string 'TXT))
602 ;;; original idea for spam-check-BBDB from Alexander Kotelnikov
603 ;;; <sacha@giotto.sj.ru>
605 ;; all this is done inside a condition-case to trap errors
612 (defun spam-enter-ham-BBDB (from)
613 "Enter an address into the BBDB; implies ham (non-spam) sender"
615 (let* ((parsed-address (gnus-extract-address-components from))
616 (name (or (car parsed-address) "Ham Sender"))
617 (net-address (car (cdr parsed-address))))
618 (gnus-message 5 "Adding address %s to BBDB" from)
619 (when (and net-address
620 (not (bbdb-search-simple nil net-address)))
621 (bbdb-create-internal name nil net-address nil nil
622 "ham sender added by spam.el")))))
624 (defun spam-BBDB-register-routine ()
625 (spam-generic-register-routine
630 (spam-enter-ham-BBDB (spam-fetch-field-from-fast article)))))
632 (defun spam-check-BBDB ()
633 "Mail from people in the BBDB is never considered spam"
634 (let ((who (message-fetch-field "from")))
636 (setq who (regexp-quote (cadr
637 (gnus-extract-address-components who))))
638 (if (bbdb-search-simple nil who)
639 nil spam-split-group)))))
642 (defalias 'bbdb-search-simple 'ignore)
643 (defalias 'spam-check-BBDB 'ignore)
644 (defalias 'spam-BBDB-register-routine 'ignore)
645 (defalias 'spam-enter-ham-BBDB 'ignore)
646 (defalias 'bbdb-create-internal 'ignore)
647 (defalias 'bbdb-records 'ignore))))
652 ;;; check the ifile backend; return nil if the mail was NOT classified
655 (defun spam-get-ifile-database-parameter ()
656 "Get the command-line parameter for ifile's database from spam-ifile-database-path."
657 (if spam-ifile-database-path
658 (format "--db-file=%s" spam-ifile-database-path)
661 (defun spam-check-ifile ()
662 "Check the ifile backend for the classification of this message"
663 (let ((article-buffer-name (buffer-name))
666 (let ((temp-buffer-name (buffer-name))
667 (db-param (spam-get-ifile-database-parameter)))
669 (set-buffer article-buffer-name)
671 (call-process-region (point-min) (point-max) spam-ifile-path
672 nil temp-buffer-name nil "-q" "-c" db-param)
673 (call-process-region (point-min) (point-max) spam-ifile-path
674 nil temp-buffer-name nil "-q" "-c")))
675 (goto-char (point-min))
677 (setq category (buffer-substring (point) (spam-point-at-eol))))
678 (when (not (zerop (length category))) ; we need a category here
679 (if spam-ifile-all-categories
680 (setq return category)
681 ;; else, if spam-ifile-all-categories is not set...
682 (when (string-equal spam-ifile-spam-category category)
683 (setq return spam-split-group))))))
686 (defun spam-ifile-register-with-ifile (article-string category)
687 "Register an article, given as a string, with a category.
688 Uses `gnus-newsgroup-name' if category is nil (for ham registration)."
689 (when (stringp article-string)
690 (let ((category (or category gnus-newsgroup-name))
691 (db-param (spam-get-ifile-database-parameter)))
693 (insert-string article-string)
695 (call-process-region (point-min) (point-max) spam-ifile-path
697 "-h" "-i" category db-param)
698 (call-process-region (point-min) (point-max) spam-ifile-path
700 "-h" "-i" category))))))
702 (defun spam-ifile-register-spam-routine ()
703 (spam-generic-register-routine
705 (spam-ifile-register-with-ifile
706 (spam-get-article-as-string article) spam-ifile-spam-category))
709 (defun spam-ifile-register-ham-routine ()
710 (spam-generic-register-routine
713 (spam-ifile-register-with-ifile
714 (spam-get-article-as-string article) spam-ifile-ham-category))))
721 (let ((spam-stat-install-hooks nil))
722 (require 'spam-stat))
724 (defun spam-check-stat ()
725 "Check the spam-stat backend for the classification of this message"
726 (let ((spam-stat-split-fancy-spam-group spam-split-group) ; override
727 (spam-stat-buffer (buffer-name)) ; stat the current buffer
729 (spam-stat-split-fancy)))
731 (defun spam-stat-register-spam-routine ()
732 (spam-generic-register-routine
734 (let ((article-string (spam-get-article-as-string article)))
736 (insert-string article-string)
737 (spam-stat-buffer-is-spam))))
741 (defun spam-stat-register-ham-routine ()
742 (spam-generic-register-routine
745 (let ((article-string (spam-get-article-as-string article)))
747 (insert-string article-string)
748 (spam-stat-buffer-is-non-spam)))))
752 (defalias 'spam-stat-register-ham-routine 'ignore)
753 (defalias 'spam-stat-register-spam-routine 'ignore)
754 (defalias 'spam-stat-buffer-is-spam 'ignore)
755 (defalias 'spam-stat-buffer-is-non-spam 'ignore)
756 (defalias 'spam-stat-split-fancy 'ignore)
757 (defalias 'spam-stat-load 'ignore)
758 (defalias 'spam-stat-save 'ignore)
759 (defalias 'spam-check-stat 'ignore))))
763 ;;;; Blacklists and whitelists.
765 (defvar spam-whitelist-cache nil)
766 (defvar spam-blacklist-cache nil)
768 (defun spam-enter-whitelist (address)
769 "Enter ADDRESS into the whitelist."
770 (interactive "sAddress: ")
771 (spam-enter-list address spam-whitelist)
772 (setq spam-whitelist-cache nil))
774 (defun spam-enter-blacklist (address)
775 "Enter ADDRESS into the blacklist."
776 (interactive "sAddress: ")
777 (spam-enter-list address spam-blacklist)
778 (setq spam-blacklist-cache nil))
780 (defun spam-enter-list (address file)
781 "Enter ADDRESS into the given FILE, either the whitelist or the blacklist."
782 (unless (file-exists-p (file-name-directory file))
783 (make-directory (file-name-directory file) t))
786 (find-file-noselect file))
787 (goto-char (point-max))
790 (insert address "\n")
793 ;;; returns nil if the sender is in the whitelist, spam-split-group otherwise
794 (defun spam-check-whitelist ()
795 ;; FIXME! Should it detect when file timestamps change?
796 (unless spam-whitelist-cache
797 (setq spam-whitelist-cache (spam-parse-list spam-whitelist)))
798 (if (spam-from-listed-p spam-whitelist-cache) nil spam-split-group))
800 (defun spam-check-blacklist ()
801 ;; FIXME! Should it detect when file timestamps change?
802 (unless spam-blacklist-cache
803 (setq spam-blacklist-cache (spam-parse-list spam-blacklist)))
804 (and (spam-from-listed-p spam-blacklist-cache) spam-split-group))
806 (defun spam-parse-list (file)
807 (when (file-readable-p file)
808 (let (contents address)
810 (insert-file-contents file)
812 (setq address (buffer-substring (point) (spam-point-at-eol)))
814 (unless (zerop (length address))
815 (setq address (regexp-quote address))
816 (while (string-match "\\\\\\*" address)
817 (setq address (replace-match ".*" t t address)))
818 (push address contents))))
819 (nreverse contents))))
821 (defun spam-from-listed-p (cache)
822 (let ((from (message-fetch-field "from"))
825 (when (string-match (pop cache) from)
830 (defun spam-blacklist-register-routine ()
831 (spam-generic-register-routine
834 (let ((from (spam-fetch-field-from-fast article)))
836 (spam-enter-blacklist from))))
840 (defun spam-whitelist-register-routine ()
841 (spam-generic-register-routine
846 (let ((from (spam-fetch-field-from-fast article)))
848 (spam-enter-whitelist from))))))
853 (defun spam-check-bogofilter-headers (&optional score)
854 (let ((header (message-fetch-field spam-bogofilter-header)))
856 (string-match "^Yes" header))
858 (when (string-match "spamicity=\\([0-9.]+\\)" header)
859 (match-string 1 header))
863 ;; return something sensible if the score can't be determined
864 (defun spam-bogofilter-score ()
865 "Get the Bogofilter spamicity score"
867 (save-window-excursion
868 (gnus-summary-show-article t)
869 (set-buffer gnus-article-buffer)
870 (let ((score (spam-check-bogofilter t)))
871 (message "Spamicity score %s" score)
874 (defun spam-check-bogofilter (&optional score)
875 "Check the Bogofilter backend for the classification of this message"
876 (let ((article-buffer-name (buffer-name))
879 (let ((temp-buffer-name (buffer-name)))
881 (set-buffer article-buffer-name)
882 (if spam-bogofilter-database-directory
883 (call-process-region (point-min) (point-max)
885 nil temp-buffer-name nil "-v"
886 "-d" spam-bogofilter-database-directory)
887 (call-process-region (point-min) (point-max) spam-bogofilter-path
888 nil temp-buffer-name nil "-v")))
889 (setq return (spam-check-bogofilter-headers score))))
892 (defun spam-bogofilter-register-with-bogofilter (article-string spam)
893 "Register an article, given as a string, as spam or non-spam."
894 (when (stringp article-string)
895 (let ((switch (if spam "-s" "-n")))
897 (insert-string article-string)
898 (if spam-bogofilter-database-directory
899 (call-process-region (point-min) (point-max)
901 nil nil nil "-v" switch
902 "-d" spam-bogofilter-database-directory)
903 (call-process-region (point-min) (point-max) spam-bogofilter-path
904 nil nil nil "-v" switch))))))
906 (defun spam-bogofilter-register-spam-routine ()
907 (spam-generic-register-routine
909 (spam-bogofilter-register-with-bogofilter
910 (spam-get-article-as-string article) t))
913 (defun spam-bogofilter-register-ham-routine ()
914 (spam-generic-register-routine
917 (spam-bogofilter-register-with-bogofilter
918 (spam-get-article-as-string article) nil))))
922 ;;; spam.el ends here.