1 ;;; spam.el --- Identifying spam
2 ;; Copyright (C) 2002, 2003, 2004 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
35 ;; TODO: spam scores, detection of spam in newsgroups, cross-server splitting,
36 ;; remote processing, training through files
40 (eval-when-compile (require 'cl))
44 (require 'gnus-uu) ; because of key prefix issues
45 ;;; for the definitions of group content classification and spam processors
47 (require 'message) ;for the message-fetch-field functions
49 ;; for nnimap-split-download-body-default
50 (eval-when-compile (require 'nnimap))
54 (autoload 'query-dig "dig"))
56 ;; autoload spam-report
58 (autoload 'spam-report-gmane "spam-report"))
60 ;; autoload gnus-registry
62 (autoload 'gnus-registry-group-count "gnus-registry")
63 (autoload 'gnus-registry-add-group "gnus-registry")
64 (autoload 'gnus-registry-store-extra-entry "gnus-registry")
65 (autoload 'gnus-registry-fetch-extra "gnus-registry"))
69 (autoload 'query-dns "dns"))
74 "Spam configuration.")
76 (defcustom spam-directory (nnheader-concat gnus-directory "spam/")
77 "Directory for spam whitelists and blacklists."
81 (defcustom spam-move-spam-nonspam-groups-only t
82 "Whether spam should be moved in non-spam groups only.
83 When t, only ham and unclassified groups will have their spam moved
84 to the spam-process-destination. When nil, spam will also be moved from
89 (defcustom spam-process-ham-in-nonham-groups nil
90 "Whether ham should be processed in non-ham groups."
94 (defcustom spam-log-to-registry nil
95 "Whether spam/ham processing should be logged in the registry."
99 (defcustom spam-split-symbolic-return nil
100 "Whether `spam-split' should work with symbols or group names."
104 (defcustom spam-split-symbolic-return-positive nil
105 "Whether `spam-split' should ALWAYS work with symbols or group names.
106 Do not set this if you use `spam-split' in a fancy split
111 (defcustom spam-process-ham-in-spam-groups nil
112 "Whether ham should be processed in spam groups."
116 (defcustom spam-mark-only-unseen-as-spam t
117 "Whether only unseen articles should be marked as spam in spam groups.
118 When nil, all unread articles in a spam group are marked as
119 spam. Set this if you want to leave an article unread in a spam group
120 without losing it to the automatic spam-marking process."
124 (defcustom spam-mark-ham-unread-before-move-from-spam-group nil
125 "Whether ham should be marked unread before it's moved.
126 The article is moved out of a spam group according to ham-process-destination.
127 This variable is an official entry in the international Longest Variable Name
132 (defcustom spam-disable-spam-split-during-ham-respool nil
133 "Whether `spam-split' should be ignored while resplitting ham.
134 This is useful to prevent ham from ending up in the same spam
135 group after the resplit. Don't set this to t if you have `spam-split' as the
136 last rule in your split configuration."
140 (defcustom spam-autodetect-recheck-messages nil
141 "Should spam.el recheck all meessages when autodetecting?
142 Normally this is nil, so only unseen messages will be checked."
146 (defcustom spam-whitelist (expand-file-name "whitelist" spam-directory)
147 "The location of the whitelist.
148 The file format is one regular expression per line.
149 The regular expression is matched against the address."
153 (defcustom spam-blacklist (expand-file-name "blacklist" spam-directory)
154 "The location of the blacklist.
155 The file format is one regular expression per line.
156 The regular expression is matched against the address."
160 (defcustom spam-use-dig t
161 "Whether `query-dig' should be used instead of `query-dns'."
165 (defcustom spam-use-gmane-xref nil
166 "Whether the Gmane spam xref should be used by `spam-split'."
170 (defcustom spam-use-blacklist nil
171 "Whether the blacklist should be used by `spam-split'."
175 (defcustom spam-blacklist-ignored-regexes nil
176 "Regular expressions that the blacklist should ignore."
177 :type '(repeat (regexp :tag "Regular expression to ignore when blacklisting"))
180 (defcustom spam-use-whitelist nil
181 "Whether the whitelist should be used by `spam-split'."
185 (defcustom spam-use-whitelist-exclusive nil
186 "Whether whitelist-exclusive should be used by `spam-split'.
187 Exclusive whitelisting means that all messages from senders not in the whitelist
188 are considered spam."
192 (defcustom spam-use-blackholes nil
193 "Whether blackholes should be used by `spam-split'."
197 (defcustom spam-use-hashcash nil
198 "Whether hashcash payments should be detected by `spam-split'."
202 (defcustom spam-use-regex-headers nil
203 "Whether a header regular expression match should be used by `spam-split'.
204 Also see the variables `spam-regex-headers-spam' and `spam-regex-headers-ham'."
208 (defcustom spam-use-regex-body nil
209 "Whether a body regular expression match should be used by `spam-split'.
210 Also see the variables `spam-regex-body-spam' and `spam-regex-body-ham'."
214 (defcustom spam-use-bogofilter-headers nil
215 "Whether bogofilter headers should be used by `spam-split'.
216 Enable this if you pre-process messages with Bogofilter BEFORE Gnus sees them."
220 (defcustom spam-use-bogofilter nil
221 "Whether bogofilter should be invoked by `spam-split'.
222 Enable this if you want Gnus to invoke Bogofilter on new messages."
226 (defcustom spam-use-BBDB nil
227 "Whether BBDB should be used by `spam-split'."
231 (defcustom spam-use-BBDB-exclusive nil
232 "Whether BBDB-exclusive should be used by `spam-split'.
233 Exclusive BBDB means that all messages from senders not in the BBDB are
238 (defcustom spam-use-ifile nil
239 "Whether ifile should be used by `spam-split'."
243 (defcustom spam-use-stat nil
244 "Whether `spam-stat' should be used by `spam-split'."
248 (defcustom spam-use-spamoracle nil
249 "Whether spamoracle should be used by `spam-split'."
253 (defcustom spam-use-spamassassin nil
254 "Whether spamassassin should be invoked by `spam-split'.
255 Enable this if you want Gnus to invoke SpamAssassin on new messages."
259 (defcustom spam-use-spamassassin-headers nil
260 "Whether spamassassin headers should be checked by `spam-split'.
261 Enable this if you pre-process messages with SpamAssassin BEFORE Gnus sees
266 (defcustom spam-install-hooks (or
271 spam-use-whitelist-exclusive
274 spam-use-regex-headers
277 spam-use-bogofilter-headers
278 spam-use-spamassassin
279 spam-use-spamassassin-headers
281 spam-use-BBDB-exclusive
285 "Whether the spam hooks should be installed.
286 Default to t if one of the spam-use-* variables is set."
290 (defcustom spam-split-group "spam"
291 "Group name where incoming spam should be put by `spam-split'."
295 ;;; TODO: deprecate this variable, it's confusing since it's a list of strings,
296 ;;; not regular expressions
297 (defcustom spam-junk-mailgroups (cons
299 '("mail.junk" "poste.pourriel"))
300 "Mailgroups with spam contents.
301 All unmarked article in such group receive the spam mark on group entry."
302 :type '(repeat (string :tag "Group"))
306 (defcustom spam-gmane-xref-spam-group "gmane.spam.detected"
307 "The group where spam xrefs can be found on Gmane.
308 Only meaningful if you enable `spam-use-gmane-xref'."
312 (defcustom spam-blackhole-servers '("bl.spamcop.net" "relays.ordb.org"
313 "dev.null.dk" "relays.visi.com")
314 "List of blackhole servers.
315 Only meaningful if you enable `spam-use-blackholes'."
316 :type '(repeat (string :tag "Server"))
319 (defcustom spam-blackhole-good-server-regex nil
320 "String matching IP addresses that should not be checked in the blackholes.
321 Only meaningful if you enable `spam-use-blackholes'."
322 :type '(radio (const nil)
323 (regexp :format "%t: %v\n" :size 0))
326 (defcustom spam-face 'gnus-splash-face
327 "Face for spam-marked articles."
331 (defcustom spam-regex-headers-spam '("^X-Spam-Flag: YES")
332 "Regular expression for positive header spam matches.
333 Only meaningful if you enable `spam-use-regex-headers'."
334 :type '(repeat (regexp :tag "Regular expression to match spam header"))
337 (defcustom spam-regex-headers-ham '("^X-Spam-Flag: NO")
338 "Regular expression for positive header ham matches.
339 Only meaningful if you enable `spam-use-regex-headers'."
340 :type '(repeat (regexp :tag "Regular expression to match ham header"))
343 (defcustom spam-regex-body-spam '()
344 "Regular expression for positive body spam matches.
345 Only meaningful if you enable `spam-use-regex-body'."
346 :type '(repeat (regexp :tag "Regular expression to match spam body"))
349 (defcustom spam-regex-body-ham '()
350 "Regular expression for positive body ham matches.
351 Only meaningful if you enable `spam-use-regex-body'."
352 :type '(repeat (regexp :tag "Regular expression to match ham body"))
355 (defgroup spam-ifile nil
356 "Spam ifile configuration."
359 (defcustom spam-ifile-path (exec-installed-p "ifile")
360 "File path of the ifile executable program."
361 :type '(choice (file :tag "Location of ifile")
362 (const :tag "ifile is not installed"))
365 (defcustom spam-ifile-database-path nil
366 "File path of the ifile database."
367 :type '(choice (file :tag "Location of the ifile database")
368 (const :tag "Use the default"))
371 (defcustom spam-ifile-spam-category "spam"
372 "Name of the spam ifile category."
376 (defcustom spam-ifile-ham-category nil
377 "Name of the ham ifile category.
378 If nil, the current group name will be used."
379 :type '(choice (string :tag "Use a fixed category")
380 (const :tag "Use the current group name"))
383 (defcustom spam-ifile-all-categories nil
384 "Whether the ifile check will return all categories, or just spam.
385 Set this to t if you want to use the `spam-split' invocation of ifile as
386 your main source of newsgroup names."
390 (defgroup spam-bogofilter nil
391 "Spam bogofilter configuration."
394 (defcustom spam-bogofilter-path (exec-installed-p "bogofilter")
395 "File path of the Bogofilter executable program."
396 :type '(choice (file :tag "Location of bogofilter")
397 (const :tag "Bogofilter is not installed"))
398 :group 'spam-bogofilter)
400 (defcustom spam-bogofilter-header "X-Bogosity"
401 "The header that Bogofilter inserts in messages."
403 :group 'spam-bogofilter)
405 (defcustom spam-bogofilter-spam-switch "-s"
406 "The switch that Bogofilter uses to register spam messages."
408 :group 'spam-bogofilter)
410 (defcustom spam-bogofilter-ham-switch "-n"
411 "The switch that Bogofilter uses to register ham messages."
413 :group 'spam-bogofilter)
415 (defcustom spam-bogofilter-spam-strong-switch "-S"
416 "The switch that Bogofilter uses to unregister ham messages."
418 :group 'spam-bogofilter)
420 (defcustom spam-bogofilter-ham-strong-switch "-N"
421 "The switch that Bogofilter uses to unregister spam messages."
423 :group 'spam-bogofilter)
425 (defcustom spam-bogofilter-bogosity-positive-spam-header "^\\(Yes\\|Spam\\)"
426 "The regex on `spam-bogofilter-header' for positive spam identification."
428 :group 'spam-bogofilter)
430 (defcustom spam-bogofilter-database-directory nil
431 "Directory path of the Bogofilter databases."
432 :type '(choice (directory
433 :tag "Location of the Bogofilter database directory")
434 (const :tag "Use the default"))
435 :group 'spam-bogofilter)
437 (defgroup spam-spamoracle nil
438 "Spam spamoracle configuration."
441 (defcustom spam-spamoracle-database nil
442 "Location of spamoracle database file.
443 When nil, use the default spamoracle database."
444 :type '(choice (directory :tag "Location of spamoracle database file.")
445 (const :tag "Use the default"))
446 :group 'spam-spamoracle)
448 (defcustom spam-spamoracle-binary (executable-find "spamoracle")
449 "Location of the spamoracle binary."
450 :type '(choice (directory :tag "Location of the spamoracle binary")
451 (const :tag "Use the default"))
452 :group 'spam-spamoracle)
454 (defgroup spam-spamassassin nil
455 "Spam SpamAssassin configuration."
458 (defcustom spam-spamassassin-path (executable-find "spamassassin")
459 "File path of the spamassassin executable program.
460 Hint: set this to \"spamc\" if you have spamd running. See the spamc and
461 spamd man pages for more information on these programs."
462 :type '(choice (file :tag "Location of spamc")
463 (const :tag "spamassassin is not installed"))
464 :group 'spam-spamassassin)
466 (defcustom spam-spamassassin-arguments ()
467 "Arguments to pass to the spamassassin executable.
468 This must be a list. For example, `(\"-C\" \"configfile\")'."
469 :type '(restricted-sexp :match-alternatives (listp))
470 :group 'spam-spamassassin)
472 (defcustom spam-spamassassin-spam-flag-header "X-Spam-Flag"
473 "The header inserted by SpamAssassin to flag spam."
475 :group 'spam-spamassassin)
477 (defcustom spam-spamassassin-positive-spam-flag-header "YES"
478 "The regex on `spam-spamassassin-spam-flag-header' for positive spam
481 :group 'spam-spamassassin)
483 (defcustom spam-spamassassin-spam-status-header "X-Spam-Status"
484 "The header inserted by SpamAssassin, giving extended scoring information"
486 :group 'spam-spamassassin)
488 (defcustom spam-sa-learn-path (executable-find "sa-learn")
489 "File path of the sa-learn executable program."
490 :type '(choice (file :tag "Location of spamassassin")
491 (const :tag "spamassassin is not installed"))
492 :group 'spam-spamassassin)
494 (defcustom spam-sa-learn-rebuild t
495 "Whether sa-learn should rebuild the database every time it is called
496 Enable this if you want sa-learn to rebuild the database automatically. Doing
497 this will slightly increase the running time of the spam registration process.
498 If you choose not to do this, you will have to run \"sa-learn --rebuild\" in
499 order for SpamAssassin to recognize the new registered spam."
501 :group 'spam-spamassassin)
503 (defcustom spam-sa-learn-spam-switch "--spam"
504 "The switch that sa-learn uses to register spam messages"
506 :group 'spam-spamassassin)
508 (defcustom spam-sa-learn-ham-switch "--ham"
509 "The switch that sa-learn uses to register ham messages"
511 :group 'spam-spamassassin)
513 (defcustom spam-sa-learn-unregister-switch "--forget"
514 "The switch that sa-learn uses to unregister messages messages"
516 :group 'spam-spamassassin)
518 ;;; Key bindings for spam control.
520 (gnus-define-keys gnus-summary-mode-map
521 "St" spam-generic-score
522 "Sx" gnus-summary-mark-as-spam
523 "Mst" spam-generic-score
524 "Msx" gnus-summary-mark-as-spam
525 "\M-d" gnus-summary-mark-as-spam)
527 (defvar spam-cache-lookups t
528 "Whether spam.el will try to cache lookups using `spam-caches'.")
530 (defvar spam-caches (make-hash-table
533 "Cache of spam detection entries.")
535 (defvar spam-old-ham-articles nil
536 "List of old ham articles, generated when a group is entered.")
538 (defvar spam-old-spam-articles nil
539 "List of old spam articles, generated when a group is entered.")
541 (defvar spam-split-disabled nil
542 "If non-nil, `spam-split' is disabled, and always returns nil.")
544 (defvar spam-split-last-successful-check nil
546 `spam-split' will set this to nil or a spam-use-XYZ check if it
549 ;; convenience functions
550 (defun spam-clear-cache (symbol)
551 "Clear the spam-caches entry for a check."
552 (remhash symbol spam-caches))
554 (defun spam-xor (a b)
556 (and (or a b) (not (and a b))))
558 (defun spam-group-ham-mark-p (group mark &optional spam)
559 "Checks if MARK is considered a ham mark in GROUP."
560 (when (stringp group)
561 (let* ((marks (spam-group-ham-marks group spam))
562 (marks (if (symbolp mark)
564 (mapcar 'symbol-value marks))))
567 (defun spam-group-spam-mark-p (group mark)
568 "Checks if MARK is considered a spam mark in GROUP."
569 (spam-group-ham-mark-p group mark t))
571 (defun spam-group-ham-marks (group &optional spam)
572 "In GROUP, get all the ham marks."
573 (when (stringp group)
574 (let* ((marks (if spam
575 (gnus-parameter-spam-marks group)
576 (gnus-parameter-ham-marks group)))
578 (marks (if (listp (car marks)) (car marks) marks)))
581 (defun spam-group-spam-marks (group)
582 "In GROUP, get all the spam marks."
583 (spam-group-ham-marks group t))
585 (defun spam-group-spam-contents-p (group)
586 "Is GROUP a spam group?"
588 (or (member group spam-junk-mailgroups)
589 (memq 'gnus-group-spam-classification-spam
590 (gnus-parameter-spam-contents group)))
593 (defun spam-group-ham-contents-p (group)
594 "Is GROUP a ham group?"
596 (memq 'gnus-group-spam-classification-ham
597 (gnus-parameter-spam-contents group))
600 (defvar spam-list-of-processors
601 '((gnus-group-spam-exit-processor-report-gmane spam spam-use-gmane)
602 (gnus-group-spam-exit-processor-bogofilter spam spam-use-bogofilter)
603 (gnus-group-spam-exit-processor-blacklist spam spam-use-blacklist)
604 (gnus-group-spam-exit-processor-ifile spam spam-use-ifile)
605 (gnus-group-spam-exit-processor-stat spam spam-use-stat)
606 (gnus-group-spam-exit-processor-spamoracle spam spam-use-spamoracle)
607 (gnus-group-spam-exit-processor-spamassassin spam spam-use-spamassassin)
608 (gnus-group-ham-exit-processor-ifile ham spam-use-ifile)
609 (gnus-group-ham-exit-processor-bogofilter ham spam-use-bogofilter)
610 (gnus-group-ham-exit-processor-stat ham spam-use-stat)
611 (gnus-group-ham-exit-processor-whitelist ham spam-use-whitelist)
612 (gnus-group-ham-exit-processor-BBDB ham spam-use-BBDB)
613 (gnus-group-ham-exit-processor-copy ham spam-use-ham-copy)
614 (gnus-group-ham-exit-processor-spamassassin ham spam-use-spamassassin)
615 (gnus-group-ham-exit-processor-spamoracle ham spam-use-spamoracle))
616 "The `spam-list-of-processors' list.
617 This list contains pairs associating a ham/spam exit processor
618 variable with a classification and a spam-use-* variable.")
620 (defun spam-group-processor-p (group processor)
621 (if (and (stringp group)
623 (or (member processor (nth 0 (gnus-parameter-spam-process group)))
624 (spam-group-processor-multiple-p
626 (cdr-safe (assoc processor spam-list-of-processors))))
629 (defun spam-group-processor-multiple-p (group processor-info)
630 (let* ((classification (nth 0 processor-info))
631 (check (nth 1 processor-info))
632 (parameters (nth 0 (gnus-parameter-spam-process group)))
634 (dolist (parameter parameters)
635 (when (and (null found)
637 (eq classification (nth 0 parameter))
638 (eq check (nth 1 parameter)))
642 (defun spam-group-spam-processor-report-gmane-p (group)
643 (spam-group-processor-p group 'gnus-group-spam-exit-processor-report-gmane))
645 (defun spam-group-spam-processor-bogofilter-p (group)
646 (spam-group-processor-p group 'gnus-group-spam-exit-processor-bogofilter))
648 (defun spam-group-spam-processor-blacklist-p (group)
649 (spam-group-processor-p group 'gnus-group-spam-exit-processor-blacklist))
651 (defun spam-group-spam-processor-ifile-p (group)
652 (spam-group-processor-p group 'gnus-group-spam-exit-processor-ifile))
654 (defun spam-group-ham-processor-ifile-p (group)
655 (spam-group-processor-p group 'gnus-group-ham-exit-processor-ifile))
657 (defun spam-group-spam-processor-spamoracle-p (group)
658 (spam-group-processor-p group 'gnus-group-spam-exit-processor-spamoracle))
660 (defun spam-group-ham-processor-bogofilter-p (group)
661 (spam-group-processor-p group 'gnus-group-ham-exit-processor-bogofilter))
663 (defun spam-group-spam-processor-stat-p (group)
664 (spam-group-processor-p group 'gnus-group-spam-exit-processor-stat))
666 (defun spam-group-ham-processor-stat-p (group)
667 (spam-group-processor-p group 'gnus-group-ham-exit-processor-stat))
669 (defun spam-group-ham-processor-whitelist-p (group)
670 (spam-group-processor-p group 'gnus-group-ham-exit-processor-whitelist))
672 (defun spam-group-ham-processor-BBDB-p (group)
673 (spam-group-processor-p group 'gnus-group-ham-exit-processor-BBDB))
675 (defun spam-group-ham-processor-copy-p (group)
676 (spam-group-processor-p group 'gnus-group-ham-exit-processor-copy))
678 (defun spam-group-ham-processor-spamoracle-p (group)
679 (spam-group-processor-p group 'gnus-group-ham-exit-processor-spamoracle))
681 (defun spam-report-articles-gmane (n)
682 "Report the current message as spam.
683 Respects the process/prefix convention."
685 (dolist (article (gnus-summary-work-articles n))
686 (gnus-summary-remove-process-mark article)
687 (spam-report-gmane article)))
689 (defun spam-generic-score ()
691 "Invoke whatever scoring method we can."
693 spam-use-spamassassin
694 spam-use-spamassassin-headers)
695 (spam-spamassassin-score)
696 (spam-bogofilter-score)))
698 ;;; Summary entry and exit processing.
700 (defun spam-summary-prepare ()
701 (setq spam-old-ham-articles
702 (spam-list-articles gnus-newsgroup-articles 'ham))
703 (setq spam-old-spam-articles
704 (spam-list-articles gnus-newsgroup-articles 'spam))
705 (spam-mark-junk-as-spam-routine))
707 ;; The spam processors are invoked for any group, spam or ham or neither
708 (defun spam-summary-prepare-exit ()
709 (unless gnus-group-is-exiting-without-update-p
710 (gnus-message 6 "Exiting summary buffer and applying spam rules")
712 ;; first of all, unregister any articles that are no longer ham or spam
713 ;; we have to iterate over the processors, or else we'll be too slow
714 (dolist (classification '(spam ham))
715 (let* ((old-articles (if (eq classification 'spam)
716 spam-old-spam-articles
717 spam-old-ham-articles))
718 (new-articles (spam-list-articles
719 gnus-newsgroup-articles
721 (changed-articles (gnus-set-difference new-articles old-articles)))
722 ;; now that we have the changed articles, we go through the processors
723 (dolist (processor-param spam-list-of-processors)
724 (let ((processor (nth 0 processor-param))
725 (processor-classification (nth 1 processor-param))
726 (check (nth 2 processor-param))
728 (dolist (article changed-articles)
729 (let ((id (spam-fetch-field-message-id-fast article)))
730 (when (spam-log-unregistration-needed-p
731 id 'process classification check)
732 (push article unregister-list))))
733 ;; call spam-register-routine with specific articles to unregister,
734 ;; when there are articles to unregister and the check is enabled
735 (when (and unregister-list (symbol-value check))
736 (spam-register-routine classification check t unregister-list))))))
738 ;; find all the spam processors applicable to this group
739 (dolist (processor-param spam-list-of-processors)
740 (let ((processor (nth 0 processor-param))
741 (classification (nth 1 processor-param))
742 (check (nth 2 processor-param)))
743 (when (and (eq 'spam classification)
744 (spam-group-processor-p gnus-newsgroup-name processor))
745 (spam-register-routine classification check))))
747 (if spam-move-spam-nonspam-groups-only
748 (when (not (spam-group-spam-contents-p gnus-newsgroup-name))
749 (spam-mark-spam-as-expired-and-move-routine
750 (gnus-parameter-spam-process-destination gnus-newsgroup-name)))
751 (gnus-message 5 "Marking spam as expired and moving it to %s"
753 (spam-mark-spam-as-expired-and-move-routine
754 (gnus-parameter-spam-process-destination gnus-newsgroup-name)))
756 ;; now we redo spam-mark-spam-as-expired-and-move-routine to only
757 ;; expire spam, in case the above did not expire them
758 (gnus-message 5 "Marking spam as expired without moving it")
759 (spam-mark-spam-as-expired-and-move-routine nil)
761 (when (or (spam-group-ham-contents-p gnus-newsgroup-name)
762 (and (spam-group-spam-contents-p gnus-newsgroup-name)
763 spam-process-ham-in-spam-groups)
764 spam-process-ham-in-nonham-groups)
765 ;; find all the ham processors applicable to this group
766 (dolist (processor-param spam-list-of-processors)
767 (let ((processor (nth 0 processor-param))
768 (classification (nth 1 processor-param))
769 (check (nth 2 processor-param)))
770 (when (and (eq 'ham classification)
771 (spam-group-processor-p gnus-newsgroup-name processor))
772 (spam-register-routine classification check)))))
774 (when (spam-group-ham-processor-copy-p gnus-newsgroup-name)
775 (gnus-message 5 "Copying ham")
776 (spam-ham-copy-routine
777 (gnus-parameter-ham-process-destination gnus-newsgroup-name)))
779 ;; now move all ham articles out of spam groups
780 (when (spam-group-spam-contents-p gnus-newsgroup-name)
781 (gnus-message 5 "Moving ham messages from spam group")
782 (spam-ham-move-routine
783 (gnus-parameter-ham-process-destination gnus-newsgroup-name))))
785 (setq spam-old-ham-articles nil)
786 (setq spam-old-spam-articles nil))
788 (defun spam-mark-junk-as-spam-routine ()
789 ;; check the global list of group names spam-junk-mailgroups and the
791 (when (spam-group-spam-contents-p gnus-newsgroup-name)
792 (gnus-message 5 "Marking %s articles as spam"
793 (if spam-mark-only-unseen-as-spam
796 (let ((articles (if spam-mark-only-unseen-as-spam
797 gnus-newsgroup-unseen
798 gnus-newsgroup-unreads)))
799 (dolist (article articles)
800 (gnus-summary-mark-article article gnus-spam-mark)))))
802 (defun spam-mark-spam-as-expired-and-move-routine (&rest groups)
803 (if (and (car-safe groups) (listp (car-safe groups)))
804 (apply 'spam-mark-spam-as-expired-and-move-routine (car groups))
805 (gnus-summary-kill-process-mark)
806 (let ((articles gnus-newsgroup-articles)
807 (backend-supports-deletions
808 (gnus-check-backend-function
809 'request-move-article gnus-newsgroup-name))
810 article tomove deletep)
811 (dolist (article articles)
812 (when (eq (gnus-summary-article-mark article) gnus-spam-mark)
813 (gnus-summary-mark-article article gnus-expirable-mark)
814 (push article tomove)))
816 ;; now do the actual copies
817 (dolist (group groups)
820 (dolist (article tomove)
821 (gnus-summary-set-process-mark article))
823 (if (or (not backend-supports-deletions)
824 (> (length groups) 1))
826 (gnus-summary-copy-article nil group)
828 (gnus-summary-move-article nil group)))))
830 ;; now delete the articles, if there was a copy done, and the
832 (when (and deletep backend-supports-deletions)
833 (dolist (article tomove)
834 (gnus-summary-set-process-mark article))
836 (let ((gnus-novice-user nil)) ; don't ask me if I'm sure
837 (gnus-summary-delete-article nil))))
839 (gnus-summary-yank-process-mark))))
841 (defun spam-ham-copy-or-move-routine (copy groups)
842 (gnus-summary-kill-process-mark)
843 (let ((todo (spam-list-articles gnus-newsgroup-articles 'ham))
844 (backend-supports-deletions
845 (gnus-check-backend-function
846 'request-move-article gnus-newsgroup-name))
847 (respool-method (gnus-find-method-for-group gnus-newsgroup-name))
848 article mark todo deletep respool)
850 (when (member 'respool groups)
851 (setq respool t) ; boolean for later
852 (setq groups '("fake"))) ; when respooling, groups are dynamic so fake it
854 ;; now do the actual move
855 (dolist (group groups)
856 (when (and todo (stringp group))
857 (dolist (article todo)
858 (when spam-mark-ham-unread-before-move-from-spam-group
859 (gnus-summary-mark-article article gnus-unread-mark))
860 (gnus-summary-set-process-mark article))
862 (if respool ; respooling is with a "fake" group
863 (let ((spam-split-disabled
864 (or spam-split-disabled
865 spam-disable-spam-split-during-ham-respool)))
866 (gnus-summary-respool-article nil respool-method))
867 (if (or (not backend-supports-deletions) ; else, we are not respooling
868 (> (length groups) 1))
869 (progn ; if copying, copy and set deletep
870 (gnus-summary-copy-article nil group)
872 (gnus-summary-move-article nil group))))) ; else move articles
874 ;; now delete the articles, unless a) copy is t, and there was a copy done
875 ;; b) a move was done to a single group
876 ;; c) backend-supports-deletions is nil
878 (when (and deletep backend-supports-deletions)
879 (dolist (article todo)
880 (gnus-summary-set-process-mark article))
882 (let ((gnus-novice-user nil)) ; don't ask me if I'm sure
883 (gnus-summary-delete-article nil))))))
885 (gnus-summary-yank-process-mark))
887 (defun spam-ham-copy-routine (&rest groups)
888 (if (and (car-safe groups) (listp (car-safe groups)))
889 (apply 'spam-ham-copy-routine (car groups))
890 (spam-ham-copy-or-move-routine t groups)))
892 (defun spam-ham-move-routine (&rest groups)
893 (if (and (car-safe groups) (listp (car-safe groups)))
894 (apply 'spam-ham-move-routine (car groups))
895 (spam-ham-copy-or-move-routine nil groups)))
897 (defun spam-get-article-as-string (article)
898 (when (numberp article)
900 (gnus-request-article-this-buffer
906 ;; (defun spam-get-article-as-filename (article)
907 ;; (let ((article-filename))
908 ;; (when (numberp article)
909 ;; (nnml-possibly-change-directory
910 ;; (gnus-group-real-name gnus-newsgroup-name))
911 ;; (setq article-filename (expand-file-name
912 ;; (int-to-string article) nnml-current-directory)))
913 ;; (if (file-exists-p article-filename)
917 (defun spam-fetch-field-fast (article field &optional prepared-data-header)
918 "Fetch a field quickly, using the internal gnus-data-list function"
919 (when (numberp article)
920 (let* ((data-header (or prepared-data-header
921 (spam-fetch-article-header article))))
922 (if (arrayp data-header)
925 (mail-header-from data-header))
926 ((equal field 'message-id)
927 (mail-header-message-id data-header))
928 ((equal field 'subject)
929 (mail-header-subject data-header))
930 ((equal field 'references)
931 (mail-header-references data-header))
933 (mail-header-date data-header))
935 (mail-header-xref data-header))
936 ((equal field 'extra)
937 (mail-header-extra data-header))
940 (gnus-error 5 "Article %d has a nil data header" article)))))
942 (defun spam-fetch-field-from-fast (article &optional prepared-data-header)
943 (spam-fetch-field-fast article 'from prepared-data-header))
945 (defun spam-fetch-field-subject-fast (article &optional prepared-data-header)
946 (spam-fetch-field-fast article 'subject prepared-data-header))
948 (defun spam-fetch-field-message-id-fast (article &optional prepared-data-header)
949 (spam-fetch-field-fast article 'message-id prepared-data-header))
951 (defun spam-generate-fake-headers (article)
952 (let ((dh (spam-fetch-article-header article)))
956 (concat "From: %s\nSubject: %s\nMessage-ID: %s\n"
957 "Date: %s\nReferences: %s\nXref: %s\n")
958 (spam-fetch-field-fast article 'from dh)
959 (spam-fetch-field-fast article 'subject dh)
960 (spam-fetch-field-fast article 'message-id dh)
961 (spam-fetch-field-fast article 'date dh)
962 (spam-fetch-field-fast article 'references dh)
963 (spam-fetch-field-fast article 'xref dh))
964 (when (spam-fetch-field-fast article 'extra dh)
965 (format "%s\n" (spam-fetch-field-fast article 'extra dh))))
968 "spam-generate-fake-headers: article %d didn't have a valid header"
971 (defun spam-fetch-article-header (article)
973 (set-buffer gnus-summary-buffer)
974 (nth 3 (assq article gnus-newsgroup-data))))
977 ;;;; Spam determination.
979 (defvar spam-list-of-checks
980 '((spam-use-blacklist . spam-check-blacklist)
981 (spam-use-regex-headers . spam-check-regex-headers)
982 (spam-use-gmane-xref . spam-check-gmane-xref)
983 (spam-use-regex-body . spam-check-regex-body)
984 (spam-use-whitelist . spam-check-whitelist)
985 (spam-use-BBDB . spam-check-BBDB)
986 (spam-use-BBDB-exclusive . spam-check-BBDB)
987 (spam-use-ifile . spam-check-ifile)
988 (spam-use-spamoracle . spam-check-spamoracle)
989 (spam-use-stat . spam-check-stat)
990 (spam-use-blackholes . spam-check-blackholes)
991 (spam-use-hashcash . spam-check-hashcash)
992 (spam-use-spamassassin-headers . spam-check-spamassassin-headers)
993 (spam-use-spamassassin . spam-check-spamassassin)
994 (spam-use-bogofilter-headers . spam-check-bogofilter-headers)
995 (spam-use-bogofilter . spam-check-bogofilter))
996 "The spam-list-of-checks list contains pairs associating a
997 parameter variable with a spam checking function. If the
998 parameter variable is true, then the checking function is called,
999 and its value decides what happens. Each individual check may
1000 return nil, t, or a mailgroup name. The value nil means that the
1001 check does not yield a decision, and so, that further checks are
1002 needed. The value t means that the message is definitely not
1003 spam, and that further spam checks should be inhibited.
1004 Otherwise, a mailgroup name or the symbol 'spam (depending on
1005 spam-split-symbolic-return) is returned where the mail should go,
1006 and further checks are also inhibited. The usual mailgroup name
1007 is the value of `spam-split-group', meaning that the message is
1008 definitely a spam.")
1010 (defvar spam-list-of-statistical-checks
1016 spam-use-spamassassin
1017 spam-use-spamoracle)
1018 "The spam-list-of-statistical-checks list contains all the mail
1019 splitters that need to have the full message body available.
1020 Note that you should fetch extra headers if you don't like this,
1021 e.g. fetch the 'Received' header for spam-use-blackholes.")
1023 (defun spam-split (&rest specific-checks)
1024 "Split this message into the `spam' group if it is spam.
1025 This function can be used as an entry in the variable `nnmail-split-fancy',
1026 for example like this: (: spam-split). It can take checks as
1027 parameters. A string as a parameter will set the
1028 spam-split-group to that string.
1030 See the Info node `(gnus)Fancy Mail Splitting' for more details."
1032 (setq spam-split-last-successful-check nil)
1033 (unless spam-split-disabled
1034 (let ((spam-split-group-choice spam-split-group))
1035 (dolist (check specific-checks)
1036 (when (stringp check)
1037 (setq spam-split-group-choice check)
1038 (setq specific-checks (delq check specific-checks))))
1040 (let ((spam-split-group spam-split-group-choice))
1043 (dolist (check spam-list-of-statistical-checks)
1044 (when (and (symbolp check)
1045 (or (symbol-value check)
1046 (memq check specific-checks)))
1048 (gnus-message 8 "spam-split: widening the buffer (%s requires it)"
1049 (symbol-name check))
1051 ;; (progn (widen) (debug (buffer-string)))
1052 (let ((list-of-checks spam-list-of-checks)
1054 (while (and list-of-checks (not decision))
1055 (let ((pair (pop list-of-checks)))
1057 ;; either, given specific checks, this is one of them
1058 (and specific-checks (memq (car pair) specific-checks))
1059 ;; or, given no specific checks, spam-use-CHECK is set
1060 (and (null specific-checks) (symbol-value (car pair))))
1061 (gnus-message 5 "spam-split: calling the %s function"
1062 (symbol-name (cdr pair)))
1063 (setq decision (funcall (cdr pair)))
1064 ;; if we got a decision at all, save the current check
1066 (setq spam-split-last-successful-check (car pair)))
1068 (when (eq decision 'spam)
1069 (unless spam-split-symbolic-return
1072 (format "spam-split got %s but %s is nil"
1073 (symbol-name decision)
1074 (symbol-name spam-split-symbolic-return))))))))
1076 (if spam-split-symbolic-return-positive 'ham nil)
1079 (defun spam-find-spam ()
1080 "This function will detect spam in the current newsgroup using spam-split."
1083 (let* ((group gnus-newsgroup-name)
1084 (autodetect (gnus-parameter-spam-autodetect group))
1085 (methods (gnus-parameter-spam-autodetect-methods group))
1086 (first-method (nth 0 methods))
1087 (articles (if spam-autodetect-recheck-messages
1088 gnus-newsgroup-articles
1089 gnus-newsgroup-unseen))
1090 article-cannot-be-faked)
1092 (dolist (check spam-list-of-statistical-checks)
1093 (when (and (symbolp check)
1094 (memq check methods))
1095 (setq article-cannot-be-faked t)
1098 (when (memq 'default methods)
1099 (setq article-cannot-be-faked t))
1101 (when (and autodetect
1102 (not (equal first-method 'none)))
1105 (let ((id (spam-fetch-field-message-id-fast article))
1106 (subject (spam-fetch-field-subject-fast article))
1107 (sender (spam-fetch-field-from-fast article))
1111 (gnus-error 5 "Article %d has no message ID!" article))
1113 (when (and id spam-log-to-registry)
1114 (setq registry-lookup (spam-log-registration-type id 'incoming))
1115 (when registry-lookup
1118 "spam-find-spam: message %s was already registered incoming"
1121 (let* ((spam-split-symbolic-return t)
1122 (spam-split-symbolic-return-positive t)
1123 (fake-headers (spam-generate-fake-headers article))
1127 (if article-cannot-be-faked
1128 (gnus-request-article-this-buffer
1131 ;; else, we fake the article
1132 (when fake-headers (insert fake-headers)))
1133 (if (or (null first-method)
1134 (equal first-method 'default))
1136 (apply 'spam-split methods))))))
1137 (if (equal split-return 'spam)
1138 (gnus-summary-mark-article article gnus-spam-mark))
1140 (when (and id split-return spam-log-to-registry)
1141 (when (zerop (gnus-registry-group-count id))
1142 (gnus-registry-add-group
1143 id group subject sender))
1145 (unless registry-lookup
1146 (spam-log-processing-to-registry
1150 spam-split-last-successful-check
1154 (defvar spam-registration-functions
1155 ;; first the ham register, second the spam register function
1156 ;; third the ham unregister, fourth the spam unregister function
1157 '((spam-use-blacklist nil
1158 spam-blacklist-register-routine
1160 spam-blacklist-unregister-routine)
1161 (spam-use-whitelist spam-whitelist-register-routine
1163 spam-whitelist-unregister-routine
1165 (spam-use-ham-copy nil
1169 (spam-use-BBDB spam-BBDB-register-routine
1171 spam-BBDB-unregister-routine
1173 (spam-use-ifile spam-ifile-register-ham-routine
1174 spam-ifile-register-spam-routine
1175 spam-ifile-unregister-ham-routine
1176 spam-ifile-unregister-spam-routine)
1177 (spam-use-spamoracle spam-spamoracle-learn-ham
1178 spam-spamoracle-learn-spam
1179 spam-spamoracle-unlearn-ham
1180 spam-spamoracle-unlearn-spam)
1181 (spam-use-stat spam-stat-register-ham-routine
1182 spam-stat-register-spam-routine
1183 spam-stat-unregister-ham-routine
1184 spam-stat-unregister-spam-routine)
1185 ;; note that spam-use-gmane is not a legitimate check
1187 spam-report-gmane-register-routine
1188 ;; does Gmane support unregistration?
1191 (spam-use-spamassassin spam-spamassassin-register-ham-routine
1192 spam-spamassassin-register-spam-routine
1193 spam-spamassassin-unregister-ham-routine
1194 spam-spamassassin-unregister-spam-routine)
1195 (spam-use-bogofilter spam-bogofilter-register-ham-routine
1196 spam-bogofilter-register-spam-routine
1197 spam-bogofilter-unregister-ham-routine
1198 spam-bogofilter-unregister-spam-routine))
1199 "The spam-registration-functions list contains pairs
1200 associating a parameter variable with the ham and spam
1201 registration functions, and the ham and spam unregistration
1204 (defun spam-classification-valid-p (classification)
1205 (or (eq classification 'spam)
1206 (eq classification 'ham)))
1208 (defun spam-process-type-valid-p (process-type)
1209 (or (eq process-type 'incoming)
1210 (eq process-type 'process)))
1212 (defun spam-registration-check-valid-p (check)
1213 (assoc check spam-registration-functions))
1215 (defun spam-unregistration-check-valid-p (check)
1216 (assoc check spam-registration-functions))
1218 (defun spam-registration-function (classification check)
1219 (let ((flist (cdr-safe (assoc check spam-registration-functions))))
1220 (if (eq classification 'spam)
1224 (defun spam-unregistration-function (classification check)
1225 (let ((flist (cdr-safe (assoc check spam-registration-functions))))
1226 (if (eq classification 'spam)
1230 (defun spam-list-articles (articles classification)
1231 (let ((mark-check (if (eq classification 'spam)
1232 'spam-group-spam-mark-p
1233 'spam-group-ham-mark-p))
1234 list mark-cache-yes mark-cache-no)
1235 (dolist (article articles)
1236 (let ((mark (gnus-summary-article-mark article)))
1237 (unless (memq mark mark-cache-no)
1238 (if (memq mark mark-cache-yes)
1240 ;; else, we have to actually check the mark
1241 (if (funcall mark-check
1246 (push mark mark-cache-yes))
1247 (push mark mark-cache-no))))))
1250 (defun spam-register-routine (classification
1252 &optional unregister
1254 (when (and (spam-classification-valid-p classification)
1255 (spam-registration-check-valid-p check))
1256 (let* ((register-function
1257 (spam-registration-function classification check))
1258 (unregister-function
1259 (spam-unregistration-function classification check))
1260 (run-function (if unregister
1263 (log-function (if unregister
1264 'spam-log-undo-registration
1265 'spam-log-processing-to-registry))
1269 ;; make list of articles, using specific-articles if given
1270 (setq articles (or specific-articles
1272 gnus-newsgroup-articles
1275 (gnus-message 5 "%s %d %s articles as %s using backend %s"
1276 (if unregister "Unregistering" "Registering")
1278 (if specific-articles "specific" "")
1279 (symbol-name classification)
1280 (symbol-name check))
1281 (funcall run-function articles)
1282 ;; now log all the registrations (or undo them, depending on unregister)
1283 (dolist (article articles)
1284 (funcall log-function
1285 (spam-fetch-field-message-id-fast article)
1289 gnus-newsgroup-name))))))
1291 ;;; log a ham- or spam-processor invocation to the registry
1292 (defun spam-log-processing-to-registry (id type classification check group)
1293 (when spam-log-to-registry
1294 (if (and (stringp id)
1296 (spam-process-type-valid-p type)
1297 (spam-classification-valid-p classification)
1298 (spam-registration-check-valid-p check))
1299 (let ((cell-list (cdr-safe (gnus-registry-fetch-extra id type)))
1300 (cell (list classification check group)))
1301 (push cell cell-list)
1302 (gnus-registry-store-extra-entry
1309 (format "%s call with bad ID, type, classification, spam-check, or group"
1310 "spam-log-processing-to-registry")))))
1312 ;;; check if a ham- or spam-processor registration has been done
1313 (defun spam-log-registered-p (id type)
1314 (when spam-log-to-registry
1315 (if (and (stringp id)
1316 (spam-process-type-valid-p type))
1317 (cdr-safe (gnus-registry-fetch-extra id type))
1321 (format "%s called with bad ID, type, classification, or spam-check"
1322 "spam-log-registered-p"))
1325 ;;; check what a ham- or spam-processor registration says
1326 ;;; returns nil if conflicting registrations are found
1327 (defun spam-log-registration-type (id type)
1330 (dolist (reg (spam-log-registered-p id type))
1331 (let ((classification (nth 0 reg)))
1332 (when (spam-classification-valid-p classification)
1334 (not (eq classification decision)))
1335 (setq count (+ 1 count)))
1336 (setq decision classification))))
1342 ;;; check if a ham- or spam-processor registration needs to be undone
1343 (defun spam-log-unregistration-needed-p (id type classification check)
1344 (when spam-log-to-registry
1345 (if (and (stringp id)
1346 (spam-process-type-valid-p type)
1347 (spam-classification-valid-p classification)
1348 (spam-registration-check-valid-p check))
1349 (let ((cell-list (cdr-safe (gnus-registry-fetch-extra id type)))
1351 (dolist (cell cell-list)
1353 (when (and (eq classification (nth 0 cell))
1354 (eq check (nth 1 cell)))
1360 (format "%s called with bad ID, type, classification, or spam-check"
1361 "spam-log-unregistration-needed-p"))
1365 ;;; undo a ham- or spam-processor registration (the group is not used)
1366 (defun spam-log-undo-registration (id type classification check &optional group)
1367 (when (and spam-log-to-registry
1368 (spam-log-unregistration-needed-p id type classification check))
1369 (if (and (stringp id)
1370 (spam-process-type-valid-p type)
1371 (spam-classification-valid-p classification)
1372 (spam-registration-check-valid-p check))
1373 (let ((cell-list (cdr-safe (gnus-registry-fetch-extra id type)))
1374 new-cell-list found)
1375 (dolist (cell cell-list)
1376 (unless (and (eq classification (nth 0 cell))
1377 (eq check (nth 1 cell)))
1378 (push cell new-cell-list)))
1379 (gnus-registry-store-extra-entry
1384 (gnus-error 5 (format "%s call with bad ID, type, spam-check, or group"
1385 "spam-log-undo-registration"))
1388 ;;; set up IMAP widening if it's necessary
1389 (defun spam-setup-widening ()
1390 (dolist (check spam-list-of-statistical-checks)
1391 (when (symbol-value check)
1392 (setq nnimap-split-download-body-default t))))
1396 (defun spam-check-gmane-xref ()
1398 (message-fetch-field "Xref")
1399 (message-fetch-field "Newsgroups")))
1400 (spam-split-group (if spam-split-symbolic-return
1403 (when header ; return nil when no header
1404 (when (string-match spam-gmane-xref-spam-group
1406 spam-split-group))))
1411 (defun spam-check-regex-body ()
1412 (let ((spam-regex-headers-ham spam-regex-body-ham)
1413 (spam-regex-headers-spam spam-regex-body-spam))
1414 (spam-check-regex-headers t)))
1419 (defun spam-check-regex-headers (&optional body)
1420 (let ((type (if body "body" "header"))
1421 (spam-split-group (if spam-split-symbolic-return
1425 (dolist (h-regex spam-regex-headers-ham)
1427 (goto-char (point-min))
1428 (when (re-search-forward h-regex nil t)
1429 (message "Ham regex %s search positive." type)
1431 (dolist (s-regex spam-regex-headers-spam)
1433 (goto-char (point-min))
1434 (when (re-search-forward s-regex nil t)
1435 (message "Spam regex %s search positive." type)
1437 (setq ret spam-split-group))))
1443 (defun spam-reverse-ip-string (ip)
1445 (mapconcat 'identity
1446 (nreverse (split-string ip "\\."))
1449 (defun spam-check-blackholes ()
1450 "Check the Received headers for blackholed relays."
1451 (let ((headers (message-fetch-field "received"))
1452 (spam-split-group (if spam-split-symbolic-return
1459 (goto-char (point-min))
1460 (gnus-message 5 "Checking headers for relay addresses")
1461 (while (re-search-forward
1462 "\\([0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+\\)" nil t)
1463 (gnus-message 9 "Blackhole search found host IP %s." (match-string 1))
1464 (push (spam-reverse-ip-string (match-string 1))
1466 (dolist (server spam-blackhole-servers)
1468 (unless (and spam-blackhole-good-server-regex
1469 ;; match the good-server-regex against the reversed (again) IP string
1471 spam-blackhole-good-server-regex
1472 (spam-reverse-ip-string ip)))
1474 (let ((query-string (concat ip "." server)))
1476 (let ((query-result (query-dig query-string)))
1478 (gnus-message 5 "(DIG): positive blackhole check '%s'"
1480 (push (list ip server query-result)
1482 ;; else, if not using dig.el
1483 (when (query-dns query-string)
1484 (gnus-message 5 "positive blackhole check")
1485 (push (list ip server (query-dns query-string 'TXT))
1496 (defun spam-check-hashcash ()
1497 "Check the headers for hashcash payments."
1498 (mail-check-payment))) ;mail-check-payment returns a boolean
1501 (defalias 'mail-check-payment 'ignore)
1502 (defalias 'spam-check-hashcash 'ignore))))
1506 ;;; original idea for spam-check-BBDB from Alexander Kotelnikov
1507 ;;; <sacha@giotto.sj.ru>
1509 ;; all this is done inside a condition-case to trap errors
1516 ;; when the BBDB changes, we want to clear out our cache
1517 (defun spam-clear-cache-BBDB (&rest immaterial)
1518 (spam-clear-cache 'spam-use-BBDB))
1520 (add-hook 'bbdb-change-hook 'spam-clear-cache-BBDB)
1522 (defun spam-enter-ham-BBDB (addresses &optional remove)
1523 "Enter an address into the BBDB; implies ham (non-spam) sender"
1524 (dolist (from addresses)
1525 (when (stringp from)
1526 (let* ((parsed-address (gnus-extract-address-components from))
1527 (name (or (nth 0 parsed-address) "Ham Sender"))
1528 (remove-function (if remove
1529 'bbdb-delete-record-internal
1531 (net-address (nth 1 parsed-address))
1532 (record (and net-address
1533 (bbdb-search-simple nil net-address))))
1535 (gnus-message 5 "%s address %s %s BBDB"
1536 (if remove "Deleting" "Adding")
1538 (if remove "from" "to"))
1540 (funcall remove-function record)
1541 (bbdb-create-internal name nil net-address nil nil
1542 "ham sender added by spam.el")))))))
1544 (defun spam-BBDB-register-routine (articles &optional unregister)
1546 (dolist (article articles)
1547 (when (stringp (spam-fetch-field-from-fast article))
1548 (push (spam-fetch-field-from-fast article) addresses)))
1549 ;; now do the register/unregister action
1550 (spam-enter-ham-BBDB addresses unregister)))
1552 (defun spam-BBDB-unregister-routine (articles)
1553 (spam-BBDB-register-routine articles t))
1555 (defun spam-check-BBDB ()
1556 "Mail from people in the BBDB is classified as ham or non-spam"
1557 (let ((who (message-fetch-field "from"))
1558 (spam-split-group (if spam-split-symbolic-return
1561 bbdb-cache bbdb-hashtable)
1562 (when spam-cache-lookups
1563 (setq bbdb-cache (gethash 'spam-use-BBDB spam-caches))
1566 ;; this is the expanded (bbdb-hashtable) macro
1567 ;; without the debugging support
1568 (with-current-buffer (bbdb-buffer)
1570 (save-window-excursion
1571 (bbdb-records nil t)
1573 (puthash 'spam-use-BBDB bbdb-cache spam-caches)))
1575 (setq who (nth 1 (gnus-extract-address-components who)))
1577 (if spam-cache-lookups
1579 (intern-soft who bbdb-cache))
1580 (bbdb-search-simple nil who))
1582 (if spam-use-BBDB-exclusive
1587 (defalias 'bbdb-search-simple 'ignore)
1588 (defalias 'bbdb-records 'ignore)
1589 (defalias 'bbdb-buffer 'ignore)
1590 (defalias 'spam-check-BBDB 'ignore)
1591 (defalias 'spam-BBDB-register-routine 'ignore)
1592 (defalias 'spam-enter-ham-BBDB 'ignore)
1593 (defalias 'bbdb-create-internal 'ignore)
1594 (defalias 'bbdb-delete-record-internal 'ignore)
1595 (defalias 'bbdb-records 'ignore))))
1600 ;;; check the ifile backend; return nil if the mail was NOT classified
1603 (defun spam-get-ifile-database-parameter ()
1604 "Get the command-line parameter for ifile's database from
1605 spam-ifile-database-path."
1606 (if spam-ifile-database-path
1607 (format "--db-file=%s" spam-ifile-database-path)
1610 (defun spam-check-ifile ()
1611 "Check the ifile backend for the classification of this message."
1612 (let ((article-buffer-name (buffer-name))
1613 (spam-split-group (if spam-split-symbolic-return
1618 (let ((temp-buffer-name (buffer-name))
1619 (db-param (spam-get-ifile-database-parameter)))
1621 (set-buffer article-buffer-name)
1622 (apply 'call-process-region
1623 (point-min) (point-max) spam-ifile-path
1624 nil temp-buffer-name nil "-c"
1625 (if db-param `(,db-param "-q") `("-q"))))
1626 ;; check the return now (we're back in the temp buffer)
1627 (goto-char (point-min))
1629 (setq category (buffer-substring (point) (point-at-eol))))
1630 (when (not (zerop (length category))) ; we need a category here
1631 (if spam-ifile-all-categories
1632 (setq return category)
1633 ;; else, if spam-ifile-all-categories is not set...
1634 (when (string-equal spam-ifile-spam-category category)
1635 (setq return spam-split-group)))))) ; note return is nil otherwise
1638 (defun spam-ifile-register-with-ifile (articles category &optional unregister)
1639 "Register an article, given as a string, with a category.
1640 Uses `gnus-newsgroup-name' if category is nil (for ham registration)."
1641 (let ((category (or category gnus-newsgroup-name))
1642 (add-or-delete-option (if unregister "-d" "-i"))
1643 (db (spam-get-ifile-database-parameter))
1646 (dolist (article articles)
1647 (let ((article-string (spam-get-article-as-string article)))
1648 (when (stringp article-string)
1649 (insert article-string))))
1650 (apply 'call-process-region
1651 (point-min) (point-max) spam-ifile-path
1653 add-or-delete-option category
1654 (if db `(,db "-h") `("-h"))))))
1656 (defun spam-ifile-register-spam-routine (articles &optional unregister)
1657 (spam-ifile-register-with-ifile articles spam-ifile-spam-category unregister))
1659 (defun spam-ifile-unregister-spam-routine (articles)
1660 (spam-ifile-register-spam-routine articles t))
1662 (defun spam-ifile-register-ham-routine (articles &optional unregister)
1663 (spam-ifile-register-with-ifile articles spam-ifile-ham-category unregister))
1665 (defun spam-ifile-unregister-ham-routine (articles)
1666 (spam-ifile-register-ham-routine articles t))
1673 (let ((spam-stat-install-hooks nil))
1674 (require 'spam-stat))
1676 (defun spam-check-stat ()
1677 "Check the spam-stat backend for the classification of this message"
1678 (let ((spam-split-group (if spam-split-symbolic-return
1681 (spam-stat-split-fancy-spam-group spam-split-group) ; override
1682 (spam-stat-buffer (buffer-name)) ; stat the current buffer
1684 (spam-stat-split-fancy)))
1686 (defun spam-stat-register-spam-routine (articles &optional unregister)
1687 (dolist (article articles)
1688 (let ((article-string (spam-get-article-as-string article)))
1690 (insert article-string)
1692 (spam-stat-buffer-change-to-non-spam)
1693 (spam-stat-buffer-is-spam))))))
1695 (defun spam-stat-unregister-spam-routine (articles)
1696 (spam-stat-register-spam-routine articles t))
1698 (defun spam-stat-register-ham-routine (articles &optional unregister)
1699 (dolist (article articles)
1700 (let ((article-string (spam-get-article-as-string article)))
1702 (insert article-string)
1704 (spam-stat-buffer-change-to-spam)
1705 (spam-stat-buffer-is-non-spam))))))
1707 (defun spam-stat-unregister-ham-routine (articles)
1708 (spam-stat-register-ham-routine articles t))
1710 (defun spam-maybe-spam-stat-load ()
1711 (when spam-use-stat (spam-stat-load)))
1713 (defun spam-maybe-spam-stat-save ()
1714 (when spam-use-stat (spam-stat-save))))
1717 (defalias 'spam-stat-load 'ignore)
1718 (defalias 'spam-stat-save 'ignore)
1719 (defalias 'spam-maybe-spam-stat-load 'ignore)
1720 (defalias 'spam-maybe-spam-stat-save 'ignore)
1721 (defalias 'spam-stat-register-ham-routine 'ignore)
1722 (defalias 'spam-stat-unregister-ham-routine 'ignore)
1723 (defalias 'spam-stat-register-spam-routine 'ignore)
1724 (defalias 'spam-stat-unregister-spam-routine 'ignore)
1725 (defalias 'spam-stat-buffer-is-spam 'ignore)
1726 (defalias 'spam-stat-buffer-change-to-spam 'ignore)
1727 (defalias 'spam-stat-buffer-is-non-spam 'ignore)
1728 (defalias 'spam-stat-buffer-change-to-non-spam 'ignore)
1729 (defalias 'spam-stat-split-fancy 'ignore)
1730 (defalias 'spam-check-stat 'ignore))))
1734 ;;;; Blacklists and whitelists.
1736 (defvar spam-whitelist-cache nil)
1737 (defvar spam-blacklist-cache nil)
1739 (defun spam-kill-whole-line ()
1741 (let ((kill-whole-line t))
1744 ;;; address can be a list, too
1745 (defun spam-enter-whitelist (address &optional remove)
1746 "Enter ADDRESS (list or single) into the whitelist.
1747 With a non-nil REMOVE, remove them."
1748 (interactive "sAddress: ")
1749 (spam-enter-list address spam-whitelist remove)
1750 (setq spam-whitelist-cache nil)
1751 (spam-clear-cache 'spam-use-whitelist))
1753 ;;; address can be a list, too
1754 (defun spam-enter-blacklist (address &optional remove)
1755 "Enter ADDRESS (list or single) into the blacklist.
1756 With a non-nil REMOVE, remove them."
1757 (interactive "sAddress: ")
1758 (spam-enter-list address spam-blacklist remove)
1759 (setq spam-blacklist-cache nil)
1760 (spam-clear-cache 'spam-use-whitelist))
1762 (defun spam-enter-list (addresses file &optional remove)
1763 "Enter ADDRESSES into the given FILE.
1764 Either the whitelist or the blacklist files can be used. With
1765 REMOVE not nil, remove the ADDRESSES."
1766 (if (stringp addresses)
1767 (spam-enter-list (list addresses) file remove)
1768 ;; else, we have a list of addresses here
1769 (unless (file-exists-p (file-name-directory file))
1770 (make-directory (file-name-directory file) t))
1773 (find-file-noselect file))
1774 (dolist (a addresses)
1776 (goto-char (point-min))
1777 (if (re-search-forward (regexp-quote a) nil t)
1778 ;; found the address
1780 (spam-kill-whole-line))
1781 ;; else, the address was not found
1783 (goto-char (point-max))
1789 (defun spam-filelist-build-cache (type)
1790 (let ((cache (if (eq type 'spam-use-blacklist)
1791 spam-blacklist-cache
1792 spam-whitelist-cache))
1794 (unless (gethash type spam-caches)
1796 (let ((address (pop cache)))
1797 (unless (zerop (length address)) ; 0 for a nil address too
1798 (setq address (regexp-quote address))
1799 ;; fix regexp-quote's treatment of user-intended regexes
1800 (while (string-match "\\\\\\*" address)
1801 (setq address (replace-match ".*" t t address))))
1802 (push address parsed-cache)))
1803 (puthash type parsed-cache spam-caches))))
1805 (defun spam-filelist-check-cache (type from)
1806 (when (stringp from)
1807 (spam-filelist-build-cache type)
1809 (dolist (address (gethash type spam-caches))
1810 (when (and address (string-match address from))
1815 ;;; returns t if the sender is in the whitelist, nil or
1816 ;;; spam-split-group otherwise
1817 (defun spam-check-whitelist ()
1818 ;; FIXME! Should it detect when file timestamps change?
1819 (let ((spam-split-group (if spam-split-symbolic-return
1822 (unless spam-whitelist-cache
1823 (setq spam-whitelist-cache (spam-parse-list spam-whitelist)))
1824 (if (spam-from-listed-p 'spam-use-whitelist)
1826 (if spam-use-whitelist-exclusive
1830 (defun spam-check-blacklist ()
1831 ;; FIXME! Should it detect when file timestamps change?
1832 (let ((spam-split-group (if spam-split-symbolic-return
1835 (unless spam-blacklist-cache
1836 (setq spam-blacklist-cache (spam-parse-list spam-blacklist)))
1837 (and (spam-from-listed-p 'spam-use-blacklist) spam-split-group)))
1839 (defun spam-parse-list (file)
1840 (when (file-readable-p file)
1841 (let (contents address)
1843 (insert-file-contents file)
1845 (setq address (buffer-substring (point) (point-at-eol)))
1847 ;; insert the e-mail address if detected, otherwise the raw data
1848 (unless (zerop (length address))
1849 (let ((pure-address (nth 1 (gnus-extract-address-components address))))
1850 (push (or pure-address address) contents)))))
1851 (nreverse contents))))
1853 (defun spam-from-listed-p (type)
1854 (let ((from (message-fetch-field "from"))
1856 (spam-filelist-check-cache type from)))
1858 (defun spam-filelist-register-routine (articles blacklist &optional unregister)
1859 (let ((de-symbol (if blacklist 'spam-use-whitelist 'spam-use-blacklist))
1860 (declassification (if blacklist 'ham 'spam))
1862 (if blacklist 'spam-enter-blacklist 'spam-enter-whitelist))
1864 (if blacklist 'spam-enter-whitelist 'spam-enter-blacklist))
1865 from addresses unregister-list)
1866 (dolist (article articles)
1867 (let ((from (spam-fetch-field-from-fast article))
1868 (id (spam-fetch-field-message-id-fast article))
1870 (when (stringp from)
1871 (dolist (ignore-regex spam-blacklist-ignored-regexes)
1872 (when (and (not sender-ignored)
1873 (stringp ignore-regex)
1874 (string-match ignore-regex from))
1875 (setq sender-ignored t)))
1876 ;; remember the messages we need to unregister, unless remove is set
1879 (spam-log-unregistration-needed-p
1880 id 'process declassification de-symbol))
1881 (push from unregister-list))
1882 (unless sender-ignored
1883 (push from addresses)))))
1886 (funcall enter-function addresses t) ; unregister all these addresses
1887 ;; else, register normally and unregister what we need to
1888 (funcall remove-function unregister-list t)
1889 (dolist (article unregister-list)
1890 (spam-log-undo-registration
1891 (spam-fetch-field-message-id-fast article)
1895 (funcall enter-function addresses nil))))
1897 (defun spam-blacklist-unregister-routine (articles)
1898 (spam-blacklist-register-routine articles t))
1900 (defun spam-blacklist-register-routine (articles &optional unregister)
1901 (spam-filelist-register-routine articles t unregister))
1903 (defun spam-whitelist-unregister-routine (articles)
1904 (spam-whitelist-register-routine articles t))
1906 (defun spam-whitelist-register-routine (articles &optional unregister)
1907 (spam-filelist-register-routine articles nil unregister))
1910 ;;;; Spam-report glue
1911 (defun spam-report-gmane-register-routine (articles)
1913 (apply 'spam-report-gmane articles)))
1917 (defun spam-check-bogofilter-headers (&optional score)
1918 (let ((header (message-fetch-field spam-bogofilter-header))
1919 (spam-split-group (if spam-split-symbolic-return
1922 (when header ; return nil when no header
1923 (if score ; scoring mode
1924 (if (string-match "spamicity=\\([0-9.]+\\)" header)
1925 (match-string 1 header)
1927 ;; spam detection mode
1928 (when (string-match spam-bogofilter-bogosity-positive-spam-header
1930 spam-split-group)))))
1932 ;; return something sensible if the score can't be determined
1933 (defun spam-bogofilter-score ()
1934 "Get the Bogofilter spamicity score"
1936 (save-window-excursion
1937 (gnus-summary-show-article t)
1938 (set-buffer gnus-article-buffer)
1939 (let ((score (or (spam-check-bogofilter-headers t)
1940 (spam-check-bogofilter t))))
1941 (gnus-summary-show-article)
1942 (message "Spamicity score %s" score)
1945 (defun spam-check-bogofilter (&optional score)
1946 "Check the Bogofilter backend for the classification of this message"
1947 (let ((article-buffer-name (buffer-name))
1948 (db spam-bogofilter-database-directory)
1951 (let ((temp-buffer-name (buffer-name)))
1953 (set-buffer article-buffer-name)
1954 (apply 'call-process-region
1955 (point-min) (point-max)
1956 spam-bogofilter-path
1957 nil temp-buffer-name nil
1958 (if db `("-d" ,db "-v") `("-v"))))
1959 (setq return (spam-check-bogofilter-headers score))))
1962 (defun spam-bogofilter-register-with-bogofilter (articles
1964 &optional unregister)
1965 "Register an article, given as a string, as spam or non-spam."
1966 (dolist (article articles)
1967 (let ((article-string (spam-get-article-as-string article))
1968 (db spam-bogofilter-database-directory)
1969 (switch (if unregister
1971 spam-bogofilter-spam-strong-switch
1972 spam-bogofilter-ham-strong-switch)
1974 spam-bogofilter-spam-switch
1975 spam-bogofilter-ham-switch))))
1976 (when (stringp article-string)
1978 (insert article-string)
1980 (apply 'call-process-region
1981 (point-min) (point-max)
1982 spam-bogofilter-path
1984 (if db `("-d" ,db "-v") `("-v"))))))))
1986 (defun spam-bogofilter-register-spam-routine (articles &optional unregister)
1987 (spam-bogofilter-register-with-bogofilter articles t unregister))
1989 (defun spam-bogofilter-unregister-spam-routine (articles)
1990 (spam-bogofilter-register-spam-routine articles t))
1992 (defun spam-bogofilter-register-ham-routine (articles &optional unregister)
1993 (spam-bogofilter-register-with-bogofilter articles nil unregister))
1995 (defun spam-bogofilter-unregister-ham-routine (articles)
1996 (spam-bogofilter-register-ham-routine articles t))
2001 (defun spam-check-spamoracle ()
2002 "Run spamoracle on an article to determine whether it's spam."
2003 (let ((article-buffer-name (buffer-name))
2004 (spam-split-group (if spam-split-symbolic-return
2008 (let ((temp-buffer-name (buffer-name)))
2010 (set-buffer article-buffer-name)
2012 (apply 'call-process-region
2013 (point-min) (point-max)
2014 spam-spamoracle-binary
2015 nil temp-buffer-name nil
2016 (if spam-spamoracle-database
2017 `("-f" ,spam-spamoracle-database "mark")
2021 (set-buffer temp-buffer-name)
2022 (goto-char (point-min))
2023 (when (re-search-forward "^X-Spam: yes;" nil t)
2025 (error "Error running spamoracle: %s" status))))))))
2027 (defun spam-spamoracle-learn (articles article-is-spam-p &optional unregister)
2028 "Run spamoracle in training mode."
2030 (let ((temp-buffer-name (buffer-name)))
2032 (goto-char (point-min))
2033 (dolist (article articles)
2034 (insert (spam-get-article-as-string article)))
2035 (let* ((arg (if (spam-xor unregister article-is-spam-p)
2039 (apply 'call-process-region
2040 (point-min) (point-max)
2041 spam-spamoracle-binary
2042 nil temp-buffer-name nil
2043 (if spam-spamoracle-database
2044 `("-f" ,spam-spamoracle-database
2047 (unless (eq 0 status)
2048 (error "Error running spamoracle: %s" status)))))))
2050 (defun spam-spamoracle-learn-ham (articles &optional unregister)
2051 (spam-spamoracle-learn articles nil unregister))
2053 (defun spam-spamoracle-unlearn-ham (articles &optional unregister)
2054 (spam-spamoracle-learn-ham articles t))
2056 (defun spam-spamoracle-learn-spam (articles &optional unregister)
2057 (spam-spamoracle-learn articles t unregister))
2059 (defun spam-spamoracle-unlearn-spam (articles &optional unregister)
2060 (spam-spamoracle-learn-spam articles t))
2064 ;;; based mostly on the bogofilter code
2065 (defun spam-check-spamassassin-headers (&optional score)
2066 "Check the SpamAssassin headers for the classification of this message."
2067 (if score ; scoring mode
2068 (let ((header (message-fetch-field spam-spamassassin-spam-status-header)))
2070 (if (string-match "hits=\\(-?[0-9.]+\\)" header)
2071 (match-string 1 header)
2073 ;; spam detection mode
2074 (let ((header (message-fetch-field spam-spamassassin-spam-flag-header))
2075 (spam-split-group (if spam-split-symbolic-return
2078 (when header ; return nil when no header
2079 (when (string-match spam-spamassassin-positive-spam-flag-header
2081 spam-split-group)))))
2083 (defun spam-check-spamassassin (&optional score)
2084 "Check the SpamAssassin backend for the classification of this message."
2085 (let ((article-buffer-name (buffer-name)))
2087 (let ((temp-buffer-name (buffer-name)))
2089 (set-buffer article-buffer-name)
2090 (apply 'call-process-region
2091 (point-min) (point-max) spam-spamassassin-path
2092 nil temp-buffer-name nil spam-spamassassin-arguments))
2093 ;; check the return now (we're back in the temp buffer)
2094 (goto-char (point-min))
2095 (spam-check-spamassassin-headers score)))))
2097 ;; return something sensible if the score can't be determined
2098 (defun spam-spamassassin-score ()
2099 "Get the SpamAssassin score"
2101 (save-window-excursion
2102 (gnus-summary-show-article t)
2103 (set-buffer gnus-article-buffer)
2104 (let ((score (or (spam-check-spamassassin-headers t)
2105 (spam-check-spamassassin t))))
2106 (gnus-summary-show-article)
2107 (message "SpamAssassin score %s" score)
2110 (defun spam-spamassassin-register-with-sa-learn (articles spam
2111 &optional unregister)
2112 "Register articles with spamassassin's sa-learn as spam or non-spam."
2114 (let ((action (if unregister spam-sa-learn-unregister-switch
2115 (if spam spam-sa-learn-spam-switch
2116 spam-sa-learn-ham-switch)))
2117 (summary-buffer-name (buffer-name)))
2119 ;; group the articles into mbox format
2120 (dolist (article articles)
2121 (let (article-string)
2123 (set-buffer summary-buffer-name)
2124 (setq article-string (spam-get-article-as-string article)))
2125 (when (stringp article-string)
2126 (insert "From \n") ; mbox separator (sa-learn only checks the
2127 ; first five chars, so we can get away with
2129 (insert article-string)
2131 ;; call sa-learn on all messages at the same time
2132 (apply 'call-process-region
2133 (point-min) (point-max)
2135 nil nil nil "--mbox"
2136 (if spam-sa-learn-rebuild
2138 `("--no-rebuild" ,action)))))))
2140 (defun spam-spamassassin-register-spam-routine (articles &optional unregister)
2141 (spam-spamassassin-register-with-sa-learn articles t unregister))
2143 (defun spam-spamassassin-register-ham-routine (articles &optional unregister)
2144 (spam-spamassassin-register-with-sa-learn articles nil unregister))
2146 (defun spam-spamassassin-unregister-spam-routine (articles)
2147 (spam-spamassassin-register-with-sa-learn articles t t))
2149 (defun spam-spamassassin-unregister-ham-routine (articles)
2150 (spam-spamassassin-register-with-sa-learn articles nil t))
2155 (defun spam-initialize ()
2156 "Install the spam.el hooks and do other initialization"
2158 (setq spam-install-hooks t)
2159 ;; TODO: How do we redo this every time spam-face is customized?
2160 (push '((eq mark gnus-spam-mark) . spam-face)
2161 gnus-summary-highlight)
2162 ;; Add hooks for loading and saving the spam stats
2163 (add-hook 'gnus-save-newsrc-hook 'spam-maybe-spam-stat-save)
2164 (add-hook 'gnus-get-top-new-news-hook 'spam-maybe-spam-stat-load)
2165 (add-hook 'gnus-startup-hook 'spam-maybe-spam-stat-load)
2166 (add-hook 'gnus-summary-prepare-exit-hook 'spam-summary-prepare-exit)
2167 (add-hook 'gnus-summary-prepare-hook 'spam-summary-prepare)
2168 (add-hook 'gnus-get-new-news-hook 'spam-setup-widening)
2169 (add-hook 'gnus-summary-prepared-hook 'spam-find-spam))
2171 (defun spam-unload-hook ()
2172 "Uninstall the spam.el hooks"
2174 (remove-hook 'gnus-save-newsrc-hook 'spam-maybe-spam-stat-save)
2175 (remove-hook 'gnus-get-top-new-news-hook 'spam-maybe-spam-stat-load)
2176 (remove-hook 'gnus-startup-hook 'spam-maybe-spam-stat-load)
2177 (remove-hook 'gnus-summary-prepare-exit-hook 'spam-summary-prepare-exit)
2178 (remove-hook 'gnus-summary-prepare-hook 'spam-summary-prepare)
2179 (remove-hook 'gnus-get-new-news-hook 'spam-setup-widening)
2180 (remove-hook 'gnus-summary-prepare-hook 'spam-find-spam))
2182 (when spam-install-hooks
2187 ;;; spam.el ends here