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File Content: `Bayes.pm`

# <@LICENSE>
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to you under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at:
# 
#     http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# </@LICENSE>

=head1 NAME

Mail::SpamAssassin::Bayes - support for learning classifiers

=head1 DESCRIPTION

This is the general class used to train a learning classifier with new samples
of spam and ham mail, and classify based on prior training. 

Prior to version 3.3.0, the default Bayes implementation was here; if you're
looking for information on that, it has moved to
C<Mail::SpamAssassin::Plugin::Bayes>.

=cut

package Mail::SpamAssassin::Bayes;

use strict;
use warnings;
# use bytes;
use re 'taint';

use Mail::SpamAssassin;
use Mail::SpamAssassin::PerMsgStatus;
use Mail::SpamAssassin::Logger;
use Mail::SpamAssassin::Util qw(untaint_var);

our @ISA = qw();

###########################################################################

sub new {
  my $class = shift;
  $class = ref($class) || $class;

  my ($main) = @_;
  my $self = {
    'main'              => $main,
    'conf'		=> $main->{conf},
    'use_ignores'       => 1,
  };
  bless ($self, $class);

  $self->{main}->call_plugins("learner_new");
  $self;
}

###########################################################################

sub finish {
  my $self = shift;
  # we don't need to do the plugin; Mail::SpamAssassin::finish() does
  # that for us
  %{$self} = ();
}

###########################################################################

# force the Bayes dbs to be closed, if they haven't already been; called
# at the end of scan operation, or when switching between user IDs,
# or when C<Mail::SpamAssassin::finish_learner()> is called.
#
sub force_close {
  my $self = shift;
  my $quiet = shift;
  $self->{main}->call_plugins("learner_close", { quiet => $quiet });
}

###########################################################################

sub ignore_message {
  my ($self,$PMS) = @_;

  return 0 unless $self->{use_ignores};

  my $ig_from = $self->{main}->call_plugins ("check_wb_list",
        { permsgstatus => $PMS, type => 'from', list => 'bayes_ignore_from' });
  my $ig_to = $self->{main}->call_plugins ("check_wb_list", 
        { permsgstatus => $PMS, type => 'to', list => 'bayes_ignore_to' });

  my $ignore = $ig_from || $ig_to;
  dbg("bayes: not using bayes, bayes_ignore_from or _to rule") if $ignore;
  return $ignore;
}

###########################################################################

sub learn {
  my ($self, $isspam, $msg, $id) = @_;
  return unless $self->{conf}->{use_learner};
  return unless defined $msg;

  if( $self->{use_ignores} )  # Remove test when PerMsgStatus available.
  {
    # DMK, koppel@ece.lsu.edu:  Hoping that the ultimate fix to bug 2263 will
    # make it unnecessary to construct a PerMsgStatus here.
    my $PMS = new Mail::SpamAssassin::PerMsgStatus $self->{main}, $msg;
    my $ignore = $self->ignore_message($PMS);
    $PMS->finish();
    return 0 if $ignore;
  }

  return $self->{main}->call_plugins("learn_message", { isspam => $isspam, msg => $msg, id => $id });
}

###########################################################################

sub forget {
  my ($self, $msg, $id) = @_;
  return unless $self->{conf}->{use_learner};
  return unless defined $msg;
  return $self->{main}->call_plugins("forget_message", { msg => $msg, id => $id });
}

###########################################################################

sub sync {
  my ($self, $sync, $expire, $opts) = @_;
  return 0 unless $self->{conf}->{use_learner};

  if ($sync) {
    $self->{main}->call_plugins("learner_sync", $opts );
  }
  if ($expire) {
    $self->{main}->call_plugins("learner_expire_old_training", $opts );
  }

  return 0;
}

###########################################################################

sub is_scan_available {
  my $self = shift;
  return 0 unless $self->{conf}->{use_learner};
  return $self->{main}->call_plugins("learner_is_scan_available");
}

###########################################################################

sub dump_bayes_db {
  my($self, $magic, $toks, $regex) = @_;
  return 0 unless $self->{conf}->{use_learner};
  return $self->{main}->call_plugins("learner_dump_database", { 
            magic => $magic, toks => $toks, regex => $regex });
}

1;

Name	Size	Permission
Bayes	---	0755
BayesStore	---	0755
Conf	---	0755
Locker	---	0755
Logger	---	0755
Message	---	0755
Plugin	---	0755
Util	---	0755
AICache.pm	5738 bytes	0644
ArchiveIterator.pm	34898 bytes	0644
AsyncLoop.pm	24125 bytes	0644
AutoWhitelist.pm	10126 bytes	0644
Bayes.pm	4933 bytes	0644
BayesStore.pm	23520 bytes	0644
Client.pm	13692 bytes	0644
Conf.pm	169553 bytes	0644
Constants.pm	14170 bytes	0644
DBBasedAddrList.pm	5345 bytes	0644
Dns.pm	22426 bytes	0644
DnsResolver.pm	34633 bytes	0644
HTML.pm	34781 bytes	0644
Locales.pm	4070 bytes	0644
Locker.pm	2159 bytes	0644
Logger.pm	11402 bytes	0644
MailingList.pm	5258 bytes	0644
Message.pm	44325 bytes	0644
NetSet.pm	10734 bytes	0644
PerMsgLearner.pm	5023 bytes	0644
PerMsgStatus.pm	108862 bytes	0644
PersistentAddrList.pm	4368 bytes	0644
Plugin.pm	31616 bytes	0644
PluginHandler.pm	7390 bytes	0644
RegistryBoundaries.pm	7998 bytes	0644
Reporter.pm	3117 bytes	0644
SQLBasedAddrList.pm	13532 bytes	0644
SpamdForkScaling.pm	27882 bytes	0644
SubProcBackChannel.pm	4553 bytes	0644
Timeout.pm	10657 bytes	0644
Util.pm	67040 bytes	0644

File Content: Bayes.pm

File Content: `Bayes.pm`