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<?php
namespace Auth;
/**
* LDAP model
*
* @package auth
* @author Frederic Guillot
*/
class Ldap extends Base
{
/**
* Backend name
*
* @var string
*/
const AUTH_NAME = 'LDAP';
/**
* Authenticate the user
*
* @access public
* @param string $username Username
* @param string $password Password
* @return boolean
*/
public function authenticate($username, $password)
{
$result = $this->findUser($username, $password);
if (is_array($result)) {
$user = $this->user->getByUsername($username);
if ($user) {
// There is already a local user with that name
if ($user['is_ldap_user'] == 0) {
return false;
}
}
else {
// We create automatically a new user
if ($this->createUser($username, $result['name'], $result['email'])) {
$user = $this->user->getByUsername($username);
}
else {
return false;
}
}
// We open the session
$this->user->updateSession($user);
// Update login history
$this->lastLogin->create(
self::AUTH_NAME,
$user['id'],
$this->user->getIpAddress(),
$this->user->getUserAgent()
);
return true;
}
return false;
}
/**
* Find the user from the LDAP server
*
* @access public
* @param string $username Username
* @param string $password Password
* @return boolean|array
*/
public function findUser($username, $password)
{
if (! function_exists('ldap_connect')) {
die('The PHP LDAP extension is required');
}
// Skip SSL certificate verification
if (! LDAP_SSL_VERIFY) {
putenv('LDAPTLS_REQCERT=never');
}
$ldap = ldap_connect(LDAP_SERVER, LDAP_PORT);
if (! is_resource($ldap)) {
die('Unable to connect to the LDAP server: "'.LDAP_SERVER.'"');
}
ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);
if (! @ldap_bind($ldap, LDAP_USERNAME, LDAP_PASSWORD)) {
die('Unable to bind to the LDAP server: "'.LDAP_SERVER.'"');
}
$sr = @ldap_search($ldap, LDAP_ACCOUNT_BASE, sprintf(LDAP_USER_PATTERN, $username), array(LDAP_ACCOUNT_FULLNAME, LDAP_ACCOUNT_EMAIL));
if ($sr === false) {
return false;
}
$info = ldap_get_entries($ldap, $sr);
// User not found
if (count($info) == 0 || $info['count'] == 0) {
return false;
}
// We got our user
if (@ldap_bind($ldap, $info[0]['dn'], $password)) {
return array(
'username' => $username,
'name' => isset($info[0][LDAP_ACCOUNT_FULLNAME][0]) ? $info[0][LDAP_ACCOUNT_FULLNAME][0] : '',
'email' => isset($info[0][LDAP_ACCOUNT_EMAIL][0]) ? $info[0][LDAP_ACCOUNT_EMAIL][0] : '',
);
}
return false;
}
/**
* Create a new local user after the LDAP authentication
*
* @access public
* @param string $username Username
* @param string $name Name of the user
* @param string $email Email address
* @return bool
*/
public function createUser($username, $name, $email)
{
$values = array(
'username' => $username,
'name' => $name,
'email' => $email,
'is_admin' => 0,
'is_ldap_user' => 1,
);
return $this->user->create($values);
}
}
|
