/usr/share/perl5/Mail/SpamAssassin/Conf/LDAP.pm is in spamassassin 3.4.1-8build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# 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::Conf::LDAP - load SpamAssassin scores from LDAP database
=head1 SYNOPSIS
(see Mail::SpamAssassin)
=head1 DESCRIPTION
Mail::SpamAssassin is a module to identify spam using text analysis and
several internet-based realtime blacklists.
This class is used internally by SpamAssassin to load scores from an LDAP
database. Please refer to the C<Mail::SpamAssassin> documentation for public
interfaces.
=head1 METHODS
=over 4
=cut
package Mail::SpamAssassin::Conf::LDAP;
use Mail::SpamAssassin::Logger;
use strict;
use warnings;
use bytes;
use re 'taint';
use vars qw{
@ISA
};
@ISA = qw();
###########################################################################
sub new {
my $class = shift;
$class = ref($class) || $class;
my ($main) = @_;
my $self = {
'main' => $main
};
bless ($self, $class);
$self;
}
###########################################################################
sub load_modules { # static
dbg("ldap: loading Net::LDAP and URI");
eval {
require Net::LDAP; # actual server connection
require URI; # parse server connection dsn
};
# do any other preloading that will speed up operation
}
###########################################################################
=item $f->load ($username)
Read configuration paramaters from LDAP server and parse scores from it.
=back
=cut
sub load {
my ($self, $username) = @_;
my $conf = $self->{main}->{conf};
my $url = $conf->{user_scores_dsn}; # an ldap URI
dbg("ldap: URL is $url");
if(!defined($url) || $url eq '') {
dbg("ldap: No URL defined; skipping LDAP");
return;
}
eval {
# make sure we can see croak messages from DBI
local $SIG{'__DIE__'} = sub { warn "$_[0]"; };
require Net::LDAP;
require URI;
load_with_ldap($self, $username, $url);
1;
} or do {
my $eval_stat = $@ ne '' ? $@ : "errno=$!"; chomp $eval_stat;
if ($conf->{user_scores_fail_to_global}) {
info("ldap: failed to load user (%s) scores from LDAP server, ".
"using a global default: %s", $username, $eval_stat);
return 1;
} else {
warn sprintf(
"ldap: failed to load user (%s) scores from LDAP server: %s\n",
$username, $eval_stat);
return 0;
}
};
}
sub load_with_ldap {
my ($self, $username, $url) = @_;
# ldapurl = scheme "://" [hostport] ["/"
# [dn ["?" [attributes] ["?" [scope]
# ["?" [filter] ["?" extensions]]]]]]
my $uri = URI->new("$url");
my $host = $uri->host;
if (!defined($host) || $host eq '') {
dbg("ldap: No server specified, assuming localhost");
$host = "localhost";
}
my $port = $uri->port;
my $base = $uri->dn;
my @attr = $uri->attributes;
my $scope = $uri->scope;
my $filter = $uri->filter;
my $scheme = $uri->scheme;
my %extn = $uri->extensions; # unused
$filter =~ s/__USERNAME__/$username/g;
dbg("ldap: host=$host, port=$port, base='$base', attr=${attr[0]}, scope=$scope, filter='$filter'");
my $main = $self->{main};
my $conf = $main->{conf};
my $ldapuser = $conf->{user_scores_ldap_username};
my $ldappass = $conf->{user_scores_ldap_password};
if(!$ldapuser) {
undef($ldapuser);
} else {
dbg("ldap: user='$ldapuser'");
}
if(!$ldappass) {
undef($ldappass);
} else {
# don't log this to avoid leaking sensitive info
# dbg("ldap: pass='$ldappass'");
}
my $f_attribute = $attr[0];
my $ldap = Net::LDAP->new ("$host:$port",
onerror => "warn",
scheme => $scheme);
if (!defined($ldapuser) && !defined($ldappass)) {
$ldap->bind;
} else {
$ldap->bind($ldapuser, password => $ldappass);
}
my $result = $ldap->search( base => $base,
filter => $filter,
scope => $scope,
attrs => \@attr
);
my $config_text = '';
foreach my $entry ($result->all_entries) {
my @v = $entry->get_value($f_attribute);
foreach my $v (@v) {
dbg("ldap: retrieving prefs for $username: $v");
$config_text .= $v."\n";
}
}
if ($config_text ne '') {
$conf->{main} = $main;
$conf->parse_scores_only($config_text);
delete $conf->{main};
}
return;
}
###########################################################################
sub sa_die { Mail::SpamAssassin::sa_die(@_); }
###########################################################################
1;
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