/usr/share/emacs/site-lisp/wl/elmo/elmo-spam.el is in wl-beta 2.15.9+0.20151119-1.
This file is owned by root:root, with mode 0o644.
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;; Copyright (C) 2003 Hiroya Murata <lapis-lazuli@pop06.odn.ne.jp>
;; Copyright (C) 2003 Yuuichi Teranishi <teranisi@gohome.org>
;; Author: Hiroya Murata <lapis-lazuli@pop06.odn.ne.jp>
;; Keywords: mail, net news, spam
;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;
;;; Commentary:
;;
;;; Code:
;;
(eval-when-compile (require 'cl))
(require 'luna)
(require 'elmo-util)
(require 'elmo)
(defgroup elmo-spam nil
"Spam configuration for wanderlust."
:group 'elmo)
(defcustom elmo-spam-scheme nil
"*Scheme of spam processor implementation. "
:type '(choice (const :tag "none" nil)
(const :tag "Bogofilter" bogofilter)
(const :tag "Spamfilter" spamfilter)
(const :tag "SpamAssassin" sa)
(const :tag "Header" header)
(const :tag "Bsfilter" bsfilter))
:group 'elmo-spam)
(eval-and-compile
(luna-define-class elsp-generic ()))
;; required method
(luna-define-generic elmo-spam-buffer-spam-p (processor buffer
&optional register)
"Return non-nil if contents of BUFFER is spam.
PROCESSOR is spam processor structure.
If optional augument REGISTER is non-nil,
register according to the classification.")
(luna-define-generic elmo-spam-register-spam-buffer (processor
buffer
&optional restore)
"Register contents of BUFFER as spam.
PROCESSOR is spam processor structure.
If optional argument RESTORE is non-nil, unregister from non-spam list.")
(luna-define-generic elmo-spam-register-good-buffer (processor
buffer
&optional restore)
"Register contents of BUFFER as non-spam.
PROCESSOR is spam processor structure.
If optional argument RESTORE is non-nil, unregister from spam list.")
;; optional method
(luna-define-generic elmo-spam-modified-p (processor)
"Return non-nil if status of PROCESSOR is modified.")
(luna-define-generic elmo-spam-save-status (processor)
"Save status of the PROCESSOR.")
(luna-define-generic elmo-spam-message-spam-p (processor folder number
&optional register)
"Return non-nil if the message in the FOLDER with NUMBER is spam.
PROCESSOR is spam processor structure.
If optional augument REGISTER is non-nil,
register according to the classification.")
(luna-define-generic elmo-spam-list-spam-messages (processor
folder &optional numbers)
"Return a list of message numbers which is classified as spam.
PROCESSOR is spam processor structure.
FOLDER is the ELMO folder structure.
If optional argument NUMBERS is specified and is a list of message numbers,
messages are searched from the list.")
(luna-define-generic elmo-spam-register-spam-messages (processor
folder
&optional
numbers restore)
"Register contents of messages as spam.
PROCESSOR is spam processor structure.
FOLDER is the ELMO folder structure.
If optional argument NUMBERS is specified and is a list of message numbers,
messages are searched from the list.
If optional argument RESTORE is non-nil, unregister from non-spam list.")
(luna-define-generic elmo-spam-register-good-messages (processor
folder
&optional
numbers restore)
"Register contents of messages as non spam.
PROCESSOR is spam processor structure.
FOLDER is the ELMO folder structure.
If optional argument NUMBERS is specified and is a list of message numbers,
messages are searched from the list.
If optional argument RESTORE is non-nil, unregister from spam list.")
;; for internal use
(defun elmo-spam-message-fetch (folder number)
(let (elmo-message-fetch-threshold)
(when enable-multibyte-characters
(set-buffer-multibyte nil))
(elmo-message-fetch
folder number
(elmo-find-fetch-strategy folder number nil 'entire)
'unread)))
(defun elmo-spam-process-messages-as-mbox (folder numbers number-per-process
function &rest args)
(with-temp-buffer
(while numbers
(let ((count 0))
(while (and numbers (< count number-per-process))
(insert "From MAILER-DAEMON@example.com\n")
(let ((begin (point)))
(insert
(with-temp-buffer
(elmo-spam-message-fetch folder (car numbers))
(buffer-string)))
(goto-char begin)
(while (re-search-forward "^>*From " nil t)
(goto-char (match-beginning 0))
(insert ?>)
(forward-line))
(goto-char (point-max))
(insert "\n\n"))
(setq count (1+ count)
numbers (cdr numbers)))
(apply function count args)
(erase-buffer)))))
;; generic implement
(luna-define-method elmo-spam-message-spam-p ((processor elsp-generic)
folder number &optional register)
(with-temp-buffer
(elmo-spam-message-fetch folder number)
(elmo-spam-buffer-spam-p processor (current-buffer) register)))
(luna-define-method elmo-spam-list-spam-messages ((processor elsp-generic)
folder &optional numbers)
(let ((numbers (or numbers (elmo-folder-list-messages folder t t)))
spam-list)
(dolist (number numbers)
(when (elmo-spam-message-spam-p processor folder number)
(setq spam-list (cons number spam-list)))
(elmo-progress-notify 'elmo-spam-check-spam))
(nreverse spam-list)))
(luna-define-method elmo-spam-register-spam-messages ((processor elsp-generic)
folder
&optional
numbers restore)
(let ((numbers (or numbers (elmo-folder-list-messages folder t t))))
(with-temp-buffer
(dolist (number numbers)
(erase-buffer)
(elmo-spam-message-fetch folder number)
(elmo-spam-register-spam-buffer processor (current-buffer) restore)
(elmo-progress-notify 'elmo-spam-register)))))
(luna-define-method elmo-spam-register-good-messages ((processor elsp-generic)
folder
&optional
numbers restore)
(let ((numbers (or numbers (elmo-folder-list-messages folder t t))))
(with-temp-buffer
(dolist (number numbers)
(erase-buffer)
(elmo-spam-message-fetch folder number)
(elmo-spam-register-good-buffer processor (current-buffer) restore)
(elmo-progress-notify 'elmo-spam-register)))))
(provide 'elsp-generic)
(defvar elmo-spam-processor-internal nil)
(defun elmo-spam-processor (&optional if-exists)
(or elmo-spam-processor-internal
(unless if-exists
(let* ((scheme (or elmo-spam-scheme 'generic))
(class (intern (format "elsp-%s" scheme))))
(require class)
(setq elmo-spam-processor-internal
(luna-make-entity class))))))
;; Backend for header match
(eval-and-compile
(luna-define-class elsp-header (elsp-generic)))
(defgroup elmo-spam-header nil
"Spam header configuration."
:group 'elmo-spam)
(defcustom elmo-spam-header-good-alist '(("X-Spam-Flag" . "No"))
"*Regular expression for positive header good matches."
:type '(repeat (cons (string :tag "Header name")
(regexp :tag "Regular expression to match good header")))
:group 'elmo-spam-header)
(defcustom elmo-spam-header-spam-alist '(("X-Spam-Flag" . "Yes"))
"*Regular expression for positive header spam matches."
:type '(repeat (cons (string :tag "Header name")
(regexp :tag "Regular expression to match spam header")))
:group 'elmo-spam-header)
(defun elmo-spam-header-check-headers (fetch-field-function)
(catch 'done
(dolist (pair elmo-spam-header-good-alist)
(let ((field-body (funcall fetch-field-function (car pair))))
(when (and field-body (string-match (cdr pair) field-body))
(throw 'done nil))))
(dolist (pair elmo-spam-header-spam-alist)
(let ((field-body (funcall fetch-field-function (car pair))))
(when (and field-body (string-match (cdr pair) field-body))
(throw 'done t))))))
(luna-define-method elmo-spam-buffer-spam-p ((processor elsp-header)
buffer &optional register)
(with-current-buffer buffer
(save-restriction
(std11-narrow-to-header)
(elmo-spam-header-check-headers #'elmo-decoded-fetch-field))))
(luna-define-method elmo-spam-message-spam-p ((processor elsp-header)
folder number &optional register)
(let ((entity (elmo-message-entity folder number))
buffer)
(unwind-protect
(save-excursion
(elmo-spam-header-check-headers
(lambda (field-name)
(or (elmo-message-entity-field entity
(intern (downcase field-name))
'string)
(progn
(unless buffer
(setq buffer (get-buffer-create
(generate-new-buffer-name
" *elmo-spam-work*")))
(set-buffer buffer)
(elmo-spam-message-fetch folder number)
(std11-narrow-to-header))
(elmo-decoded-fetch-field field-name))))))
(and buffer (kill-buffer buffer)))))
(luna-define-method elmo-spam-register-spam-messages ((processor elsp-header)
folder
&optional
numbers restore)
(elmo-progress-notify 'elmo-spam-register (length numbers)))
(luna-define-method elmo-spam-register-good-messages ((processor elsp-header)
folder
&optional
numbers restore)
(elmo-progress-notify 'elmo-spam-register (length numbers)))
(provide 'elsp-header)
(require 'product)
(product-provide (provide 'elmo-spam) (require 'elmo-version))
;;; elmo-spam.el ends here
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