elmo/elsp-sa.el

   1 ;;; elsp-sa.el --- SpamAssassin support for elmo-spam.
   2 ;; Copyright (C) 2004 Yuuichi Teranishi <teranisi@gohome.org>
   3
   4 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   5 ;; Keywords: mail, net news, spam
   6
   7 ;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
   8
   9 ;; This program 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)
  12 ;; any later version.
  13 ;;
  14 ;; This program 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.
  18 ;;
  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.
  23 ;;
  24
  25 ;;; Commentary:
  26 ;;
  27
  28 ;;; Code:
  29 ;;
  30 (require 'elmo-spam)
  31
  32 (defgroup elmo-spam-spamassassin nil
  33   "Spam SpamAssassin configuration."
  34   :group 'elmo-spam)
  35
  36 (defcustom elmo-spam-spamassassin-program "spamassassin"
  37   "Program name for SpamAssassin."
  38   :type '(file :tag "Program name of SpamAssassin.")
  39   :group 'elmo-spam-spamassassin)
  40
  41 (defcustom elmo-spam-spamassassin-learn-program "sa-learn"
  42   "Program name for SpamAssassin Learner."
  43   :type '(file :tag "Program name of SpamAssassin Learner.")
  44   :group 'elmo-spam-spamassassin)
  45
  46 (defcustom elmo-spam-spamassassin-program-arguments '("-e")
  47   "Program argument list for SpamAssassin."
  48   :type '(file :tag "Program name of SpamAssassin Learner.")
  49   :group 'elmo-spam-spamassassin)
  50
  51 (defcustom elmo-spam-spamassassin-learn-program-arguments nil
  52   "Program argument list for SpamAssassin Learner."
  53   :type '(file :tag "Program name of SpamAssassin Learner.")
  54   :group 'elmo-spam-spamassassin)
  55
  56 (defcustom elmo-spam-spamassassin-max-messages-per-process 30
  57   "Number of messages processed at once."
  58   :type 'integer
  59   :group 'elmo-spam-spamassassin)
  60
  61 (defcustom elmo-spamassassin-debug nil
  62   "Non-nil to debug elmo spamassassin spam backend."
  63   :type 'boolean
  64   :group 'elmo-spam-spamassassin)
  65
  66 (eval-and-compile
  67   (luna-define-class elsp-sa (elsp-generic))
  68   (luna-define-internal-accessors 'elsp-sa))
  69
  70 (defun elmo-spamassassin-call (type &rest args)
  71   (let ((pair (cond
  72                ((eq type 'check)
  73                 (cons elmo-spam-spamassassin-program
  74                       elmo-spam-spamassassin-program-arguments))
  75                ((eq type 'learn)
  76                 (cons
  77                  elmo-spam-spamassassin-learn-program
  78                  elmo-spam-spamassassin-learn-program-arguments))
  79                (t (error "Internal error")))))
  80     (apply #'call-process-region
  81            (point-min) (point-max)
  82            (car pair)
  83            nil (if elmo-spamassassin-debug
  84                    (get-buffer-create "*Debug ELMO SpamAssassin*"))
  85            nil (delq nil (append (cdr pair) args)))))
  86
  87 (luna-define-method elmo-spam-buffer-spam-p ((processor elsp-sa)
  88                                              buffer &optional register)
  89   (let ((result (with-current-buffer buffer
  90                   (not (eq 0 (elmo-spamassassin-call 'check))))))
  91     (when register
  92       (if result
  93           (elmo-spam-register-spam-buffer processor buffer)
  94         (elmo-spam-register-good-buffer processor buffer)))
  95     result))
  96
  97 (luna-define-method elmo-spam-register-spam-buffer ((processor elsp-sa)
  98                                                     buffer &optional restore)
  99   (with-current-buffer buffer
 100     (eq 0 (apply 'elmo-spamassassin-call 'learn
 101                  (list "--spam")))))
 102
 103 (luna-define-method elmo-spam-register-good-buffer ((processor elsp-sa)
 104                                                     buffer &optional restore)
 105   (with-current-buffer buffer
 106     (eq 0 (apply 'elmo-spamassassin-call 'learn
 107                  (list "--ham")))))
 108
 109 (defsubst elmo-spam-spamassassin-register-messages (folder
 110                                                     numbers
 111                                                     spam
 112                                                     restore)
 113   (if (not (< 0 elmo-spam-spamassassin-max-messages-per-process))
 114       (error "\
 115 non-positive value for `elmo-spam-spamassassin-max-messages-per-process'"))
 116   (elmo-spam-process-messages-as-mbox
 117    folder numbers elmo-spam-spamassassin-max-messages-per-process
 118    (lambda (count spam restore)
 119      (apply 'elmo-spamassassin-call 'learn
 120             (delq nil
 121                   (list "--mbox"
 122                         (if spam "--spam" "--ham"))))
 123      (elmo-progress-notify 'elmo-spam-register count))
 124    spam restore))
 125
 126 (luna-define-method elmo-spam-register-spam-messages :around
 127   ((processor elsp-sa) folder &optional numbers restore)
 128   (let ((numbers (or numbers (elmo-folder-list-messages folder t t))))
 129     (if (> (length numbers) 1)
 130         (elmo-spam-spamassassin-register-messages folder numbers t restore)
 131       (luna-call-next-method))))
 132
 133 (luna-define-method elmo-spam-register-good-messages :around
 134   ((processor elsp-sa) folder &optional numbers restore)
 135   (let ((numbers (or numbers (elmo-folder-list-messages folder t t))))
 136     (if (> (length numbers) 1)
 137         (elmo-spam-spamassassin-register-messages folder numbers nil restore)
 138       (luna-call-next-method))))
 139
 140 (require 'product)
 141 (product-provide (provide 'elsp-sa) (require 'elmo-version))
 142
 143 ;;; elsp-sa.el ends here