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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.
package Bugzilla::Auth::Verify::LDAP;
use 5.14.0;
use strict;
use warnings;
use base qw(Bugzilla::Auth::Verify);
use fields qw(
ldap
);
use Bugzilla::Constants;
use Bugzilla::Error;
use Bugzilla::User;
use Bugzilla::Util;
use Net::LDAP;
use Net::LDAP::Util qw(escape_filter_value);
use constant admin_can_create_account => 0;
use constant user_can_create_account => 0;
sub check_credentials {
my ($self, $params) = @_;
my $dbh = Bugzilla->dbh;
# We need to bind anonymously to the LDAP server. This is
# because we need to get the Distinguished Name of the user trying
# to log in. Some servers (such as iPlanet) allow you to have unique
# uids spread out over a subtree of an area (such as "People"), so
# just appending the Base DN to the uid isn't sufficient to get the
# user's DN. For servers which don't work this way, there will still
# be no harm done.
$self->_bind_ldap_for_search();
# Now, we verify that the user exists, and get a LDAP Distinguished
# Name for the user.
my $username = $params->{username};
my $dn_result = $self->ldap->search(_bz_search_params($username),
attrs => ['dn']);
return { failure => AUTH_ERROR, error => "ldap_search_error",
details => {errstr => $dn_result->error, username => $username}
} if $dn_result->code;
return { failure => AUTH_NO_SUCH_USER } if !$dn_result->count;
my $dn = $dn_result->shift_entry->dn;
# Check the password.
my $pw_result = $self->ldap->bind($dn, password => $params->{password});
return { failure => AUTH_LOGINFAILED } if $pw_result->code;
# And now we fill in the user's details.
# First try the search as the (already bound) user in question.
my $user_entry;
my $error_string;
my $detail_result = $self->ldap->search(_bz_search_params($username));
if ($detail_result->code) {
# Stash away the original error, just in case
$error_string = $detail_result->error;
} else {
$user_entry = $detail_result->shift_entry;
}
# If that failed (either because the search failed, or returned no
# results) then try re-binding as the initial search user, but only
# if the LDAPbinddn parameter is set.
if (!$user_entry && Bugzilla->params->{"LDAPbinddn"}) {
$self->_bind_ldap_for_search();
$detail_result = $self->ldap->search(_bz_search_params($username));
if (!$detail_result->code) {
$user_entry = $detail_result->shift_entry;
}
}
# If we *still* don't have anything in $user_entry then give up.
return { failure => AUTH_ERROR, error => "ldap_search_error",
details => {errstr => $error_string, username => $username}
} if !$user_entry;
my $mail_attr = Bugzilla->params->{"LDAPmailattribute"};
if ($mail_attr) {
if (!$user_entry->exists($mail_attr)) {
return { failure => AUTH_ERROR,
error => "ldap_cannot_retreive_attr",
details => {attr => $mail_attr} };
}
my @emails = $user_entry->get_value($mail_attr);
# Default to the first email address returned.
$params->{bz_username} = $emails[0];
if (@emails > 1) {
# Cycle through the adresses and check if they're Bugzilla logins.
# Use the first one that returns a valid id.
foreach my $email (@emails) {
if ( login_to_id($email) ) {
$params->{bz_username} = $email;
last;
}
}
}
} else {
$params->{bz_username} = $username;
}
$params->{realname} ||= $user_entry->get_value("displayName");
$params->{realname} ||= $user_entry->get_value("cn");
$params->{extern_id} = $username;
return $params;
}
sub _bz_search_params {
my ($username) = @_;
$username = escape_filter_value($username);
return (base => Bugzilla->params->{"LDAPBaseDN"},
scope => "sub",
filter => '(&(' . Bugzilla->params->{"LDAPuidattribute"}
. "=$username)"
. Bugzilla->params->{"LDAPfilter"} . ')');
}
sub _bind_ldap_for_search {
my ($self) = @_;
my $bind_result;
if (Bugzilla->params->{"LDAPbinddn"}) {
my ($LDAPbinddn,$LDAPbindpass) =
split(":",Bugzilla->params->{"LDAPbinddn"});
$bind_result =
$self->ldap->bind($LDAPbinddn, password => $LDAPbindpass);
}
else {
$bind_result = $self->ldap->bind();
}
ThrowCodeError("ldap_bind_failed", {errstr => $bind_result->error})
if $bind_result->code;
}
# We can't just do this in new(), because we're not allowed to throw any
# error from anywhere under Bugzilla::Auth::new -- otherwise we
# could create a situation where the admin couldn't get to editparams
# to fix their mistake. (Because Bugzilla->login always calls
# Bugzilla::Auth->new, and almost every page calls Bugzilla->login.)
sub ldap {
my ($self) = @_;
return $self->{ldap} if $self->{ldap};
my @servers = split(/[\s,]+/, Bugzilla->params->{"LDAPserver"});
ThrowCodeError("ldap_server_not_defined") unless @servers;
foreach (@servers) {
$self->{ldap} = new Net::LDAP(trim($_));
last if $self->{ldap};
}
ThrowCodeError("ldap_connect_failed", { server => join(", ", @servers) })
unless $self->{ldap};
# try to start TLS if needed
if (Bugzilla->params->{"LDAPstarttls"}) {
my $mesg = $self->{ldap}->start_tls();
ThrowCodeError("ldap_start_tls_failed", { error => $mesg->error() })
if $mesg->code();
}
return $self->{ldap};
}
1;
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