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|
#!/usr/bin/perl -w
# Guenther Deschner <gd@samba.org>
#
# check for multiple LDAP entries
use strict;
use Net::LDAP;
use Getopt::Std;
my %opts;
if (!@ARGV) {
print "usage: $0 -h host -b base -D admindn -w password [-l]\n";
print "\tperforms checks for multiple sid, uid and gid-entries on your LDAP server\n";
print "\t-l adds additional checks against the local /etc/passwd and /etc/group file\n";
exit 1;
}
getopts('b:h:D:w:l', \%opts);
my $host = $opts{h} || "localhost";
my $suffix = $opts{b} || die "please set base with -b";
my $binddn = $opts{D} || die "please set basedn with -D";
my $bindpw = $opts{w} || die "please set password with -w";
my $check_local_files = $opts{l} || 0;
########################
my ($ldap, $res);
my (%passwd_h, %group_h);
my $bad_uids = 0;
my $bad_gids = 0;
my $bad_sids = 0;
my $ret = 0;
if ($check_local_files) {
my @uids = `cut -d ':' -f 3 /etc/passwd`;
my @gids = `cut -d ':' -f 3 /etc/group`;
foreach my $uid (@uids) {
chomp($uid);
$passwd_h{$uid} = $uid;
}
foreach my $gid (@gids) {
chomp($gid);
$group_h{$gid} = $gid;
}
}
########
# bind #
########
$ldap = Net::LDAP->new($host, version => '3');
$res = $ldap->bind( $binddn, password => $bindpw);
$res->code && die "failed to bind: ", $res->error;
###########################
# check for double sids #
###########################
print "\ntesting for multiple sambaSids\n";
$res = $ldap->search(
base => $suffix,
filter => "(objectclass=sambaSamAccount)");
$res->code && die "failed to search: ", $res->error;
foreach my $entry ($res->all_entries) {
my $sid = $entry->get_value('sambaSid');
my $local_res = $ldap->search(
base => $suffix,
filter => "(&(objectclass=sambaSamAccount)(sambaSid=$sid))");
$local_res->code && die "failed to search: ", $local_res->error;
if ($local_res->count > 1) {
print "A SambaSamAccount with sambaSid [$sid] must exactly exist once\n";
print "You have ", $local_res->count, " entries:\n";
foreach my $loc_entry ($local_res->all_entries) {
printf "\t%s\n", $loc_entry->dn;
}
++$bad_sids;
}
}
if ($bad_sids) {
$ret = -1;
print "You have $bad_sids bad sambaSids in your system. You might need to repair them\n";
} else {
print "No multiple sambaSids found in your system\n";
}
print "-" x 80, "\n";
###########################
# check for double groups #
###########################
print "\ntesting for multiple gidNumbers\n";
$res = $ldap->search(
base => $suffix,
filter => "(objectclass=posixGroup)");
$res->code && die "failed to search: ", $res->error;
foreach my $entry ($res->all_entries) {
my $gid = $entry->get_value('gidNumber');
my $dn = $entry->dn;
my $local_res = $ldap->search(
base => $suffix,
filter => "(&(objectclass=posixGroup)(gidNumber=$gid))");
$local_res->code && die "failed to search: ", $local_res->error;
if ($local_res->count > 1) {
print "A PosixGroup with gidNumber [$gid] must exactly exist once\n";
print "You have ", $local_res->count, " entries:\n";
foreach my $loc_entry ($local_res->all_entries) {
printf "\t%s\n", $loc_entry->dn;
}
++$bad_gids;
next;
}
if ($check_local_files && exists $group_h{$gid}) {
print "Warning: There is a group in /etc/group that has gidNumber [$gid] as well\n";
print "This entry may conflict with $dn\n";
++$bad_gids;
}
}
if ($bad_gids) {
$ret = -1;
print "You have $bad_gids bad gidNumbers in your system. You might need to repair them\n";
} else {
print "No multiple gidNumbers found in your system\n";
}
print "-" x 80, "\n";
###########################
# check for double users #
###########################
print "\ntesting for multiple uidNumbers\n";
$res = $ldap->search(
base => $suffix,
filter => "(objectclass=posixAccount)");
$res->code && die "failed to search: ", $res->error;
foreach my $entry ($res->all_entries) {
my $uid = $entry->get_value('uidNumber');
my $dn = $entry->dn;
my $local_res = $ldap->search(
base => $suffix,
filter => "(&(objectclass=posixAccount)(uidNumber=$uid))");
$local_res->code && die "failed to search: ", $local_res->error;
if ($local_res->count > 1) {
print "A PosixAccount with uidNumber [$uid] must exactly exist once\n";
print "You have ", $local_res->count, " entries:\n";
foreach my $loc_entry ($local_res->all_entries) {
printf "\t%s\n", $loc_entry->dn;
}
++$bad_uids;
next;
}
if ($check_local_files && exists $passwd_h{$uid}) {
print "Warning: There is a user in /etc/passwd that has uidNumber [$uid] as well\n";
print "This entry may conflict with $dn\n";
++$bad_uids;
}
}
if ($bad_uids) {
$ret = -1;
print "You have $bad_uids bad uidNumbers in your system. You might need to repair them\n";
} else {
print "No multiple uidNumbers found in your system\n";
}
$ldap->unbind;
exit $ret;
|
