Basic Import
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spelth
270
class.ldap.php
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270
class.ldap.php
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<?php
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global $conf;
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class Ldap {
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var $cnx;
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var $config;
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// for debug
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public function write_log($message){
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$log = 0;
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if($log>0){
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@file_put_contents('/var/log/ldap_login.log',$message."\n",FILE_APPEND);
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}
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}
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/**
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* check ldap configuration
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*
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* Dans le cas ou l'acces au ldap est anonyme il faut impérativement faire une recherche
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* pour tester la connection.
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*
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* When OpenLDAP 2.x.x is used, ldap_connect() will always return a resource as it does not actually connect
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* but just initializes the connecting parameters. The actual connect happens with the next calls
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* to ldap_* funcs, usually with ldap_bind().
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*/
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public function check_ldap(){
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//$this->write_log("[function]> check_ldap");
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if (!$this->ldap_conn()) {
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return $this->getErrorString();
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}
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// test du compte root si renseigné
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if (!empty($this->config['ld_binddn']) && !empty($this->config['ld_bindpw'])){ // if empty ld_binddn, anonymous search
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// authentication with rootdn and rootpw for search
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if (!$this->ldap_bind_as($this->config['ld_binddn'],$this->config['ld_bindpw'])){
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return $this->getErrorString();
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}
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} else {
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// sinon recherche du basedn (cf comportement ldap_connect avec OpenLDAP)
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if (!$this->ldap_check_basedn()){ // search userdn
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return $this->getErrorString();
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}
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}
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return true;
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}
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public function load_default_config(){
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$this->config['host'] = 'localhost';
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$this->config['basedn'] = 'ou=people,dc=example,dc=com'; // racine !
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$this->config['port'] = ''; // if port is empty, I count on the software to care of it !
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$this->config['ld_attr'] = 'uid';
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$this->config['ld_group'] = 'cn=myPiwigoLDAPGroup,cn=users,dc=example,dc=com';
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$this->config['ld_use_ssl'] = False;
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$this->config['ld_bindpw'] ='';
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$this->config['ld_binddn'] ='';
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$this->config['allow_newusers'] = False;
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$this->config['advertise_admin_new_ldapuser'] = False;
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$this->config['send_password_by_mail_ldap'] = False;
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}
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function load_config() {
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// first we load the base config
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$conf_file = @file_get_contents( LDAP_LOGIN_PATH.'data.dat' );
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if ($conf_file!==false)
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{
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$this->config = unserialize($conf_file);
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}
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}
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function save_config()
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{
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$file = fopen( LDAP_LOGIN_PATH.'/data.dat', 'w' );
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fwrite($file, serialize($this->config) );
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fclose( $file );
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}
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function ldap_admin_menu($menu)
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{
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array_push($menu,
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array(
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'NAME' => 'Ldap Login',
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'URL' => get_admin_plugin_menu_link(LDAP_LOGIN_PATH.'/admin.php') )
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);
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return $menu;
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}
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// LDAP connection public
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public function ldap_conn(){
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if( $this->cnx = $this->make_ldap_conn() ){
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return true;
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}
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return false;
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}
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// LDAP connection private
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private function make_ldap_conn(){
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if ($this->config['ld_use_ssl'] == 1){
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if (empty($this->config['port'])){
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$this->config['uri'] = 'ldaps://'.$this->config['host'];
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}
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else {
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$this->config['uri'] = 'ldaps://'.$this->config['host'].':'.$this->config['port'];
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}
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}
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// now, it's without ssl
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else {
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if (empty($this->config['port'])){
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$this->config['uri'] = 'ldap://'.$this->config['host'];
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}
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else {
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$this->config['uri'] = 'ldap://'.$this->config['host'].':'.$this->config['port'];
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}
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}
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if ($conn = @ldap_connect($this->config['uri'])){
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@ldap_set_option($conn, LDAP_OPT_PROTOCOL_VERSION, 3); // LDAPv3 if possible
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return $conn;
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}
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return false;
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}
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// return ldap error
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public function getErrorString(){
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return ldap_err2str(ldap_errno($this->cnx));
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}
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// return the name ldap understand
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public function ldap_name($name){
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return $this->config['ld_attr'].'='.$name.','.$this->config['basedn'];
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}
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// authentication public
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public function ldap_bind_as($user,$user_passwd){
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$this->write_log("[function]> ldap_bind_as");
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$this->write_log("[ldap_bind_as]> ".$user.",".$user_passwd);
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if($this->make_ldap_bind_as($this->cnx,$user,$user_passwd)){
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$this->write_log("[ldap_bind_as]> Bind was successfull");
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return true;
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}
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return false;
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}
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// authentication private
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private function make_ldap_bind_as($conn,$user,$user_passwd){
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$this->write_log("[function]> make_ldap_bind_as");
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$this->write_log("[make_ldap_bind_as]> \$conn,".$user.",".$user_passwd);
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$bind = @ldap_bind($conn,$user,$user_passwd);
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if($bind){
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return true;
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}
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return false;
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}
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public function ldap_mail($name){
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//echo $this->cnx;
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//echo $this->ldap_name($name);
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$sr=@ldap_read($this->cnx, $this->ldap_name($name), "(objectclass=*)", array('mail'));
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$entry = @ldap_get_entries($this->cnx, $sr);
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if (!empty($entry[0]['mail'])) {
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return $entry[0]['mail'][0];
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}
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return False;
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}
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// return userdn (and username) for authentication
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public function ldap_search_dn($value_to_search){
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$this->write_log("[function]> ldap_search_dn(".$value_to_search.")");
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$filter = '(&(objectCategory=person)('.$this->config['ld_attr'].'='.$value_to_search.'))';
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// connection handling
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$this->write_log("[ldap_search_dn]> Connecting to server");
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//if(!$bcnx = $this->make_ldap_conn()){
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if(!$this->cnx){
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$this->write_log("[ldap_search_dn]> Cannot connect to server!");
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return false;
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}
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$this->write_log("[ldap_search_dn]> make_ldap_bind_as(\$this->cnx,".$this->config['ld_binddn'].",".$this->config['ld_bindpw'].")");
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//if(!$this->make_ldap_bind_as($bcnx,$this->config['ld_binddn'],$this->config['ld_bindpw'])){
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if(!$this->make_ldap_bind_as($this->cnx,$this->config['ld_binddn'],$this->config['ld_bindpw'])){
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$this->write_log("[ldap_search_dn]> Cannot bind to server!");
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return false;
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}
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$this->write_log("[ldap_search_dn]> @ldap_search(\$this->cnx,".$this->config['basedn'].",".$filter.",array('dn'),0,1)");
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// look for our attribute and get always the DN for login
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//if($search = ldap_search($bcnx,$this->config['basedn'],$filter,array('dn'),0,1)){
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if($search = @ldap_search($this->cnx,$this->config['basedn'],$filter,array('dn'),0,1)){
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$this->write_log("[ldap_search_dn]> ldap_search successfull");
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//$entry = ldap_get_entries($bcnx, $search);
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$entry = @ldap_get_entries($this->cnx, $search);
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//if (!empty($entry[0][strtolower($this->config['ld_attr'])][0])) {
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if (!empty($entry[0]["dn"])) {
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$this->write_log("[ldap_search_dn]> RESULT: ".$entry[0]["dn"]);
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//@ldap_unbind($bcnx);
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return $entry[0]["dn"];
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}
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$this->write_log("[ldap_search_dn]> result is empty!");
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return false;
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}
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$this->write_log("[ldap_search_dn]> ldap_search NOT successfull:");
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return false;
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}
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// look for LDAP group membership
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public function check_ldap_group_membership($user_dn,$group_dn){
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$this->write_log("[function]> check_ldap_group_membership(".$user_dn." , ".$group_dn.")");
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//if no group specified return true
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if(!$group_dn){
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return true;
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}
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if(!$this->cnx){
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$this->write_log("[check_ldap_group_membership]> Cannot connect to server!");
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return false;
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}
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if(!$this->make_ldap_bind_as($this->cnx,$this->config['ld_binddn'],$this->config['ld_bindpw'])){
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$this->write_log("[check_ldap_group_membership]> Cannot bind to server!");
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return false;
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}
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// search for all memberOf-attributes for a given user_dn
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$this->write_log("[check_ldap_group_membership]> @ldap_search(\$this->cnx,\"".$user_dn."\",\"(objectClass=*)\", array(\"memberOf\"),0,1)");
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if($search = @ldap_search($this->cnx, $user_dn, "(objectClass=*)", array("memberOf"),0,1)){
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$entry = @ldap_get_entries($this->cnx, $search);
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//check if there are memberof-attributes
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if(isset($entry[0]["memberof"])){
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$this->write_log("[check_ldap_group_membership]> Found ". $entry[0]["memberof"]["count"] ." memberOf-attributes");
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for($i=0; $i < $entry["0"]["memberof"]["count"]; $i++){
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$this->write_log("[check_ldap_group_membership]> checking: ". $entry["0"]["memberof"][$i]);
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if(strcmp($group_dn,$entry["0"]["memberof"][$i]) == 0){
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$this->write_log("[check_ldap_group_membership]> Match found for \"". $group_dn ."\" AND \"".$entry["0"]["memberof"][$i]."\"");
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return true;
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}
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}
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} else {
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$this->write_log("[check_ldap_group_membership]> No groups found for given user, check on ldap side");
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}
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} else {
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$this->write_log("[check_ldap_group_membership]> ldap_search NOT successfull: " .$this->getErrorString());
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}
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$this->write_log("[check_ldap_group_membership]> No matching groups found for given group_dn: ". $group_dn);
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return false;
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}
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public function getAttr() {
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$search = @ldap_read($this->cnx, "cn=subschema", "(objectClass=*)", array('*', 'subschemasubentry'));
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$entries = @ldap_get_entries($this->cnx, $search);
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echo count($entries);
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}
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public function getRootDse() {
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$search = @ldap_read($this->cnx, NULL, 'objectClass=*', array("*", "+"));
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$entries = @ldap_get_entries($this->cnx, $search);
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return $entries[0];
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}
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public function ldap_check_basedn(){
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if ($read = @ldap_read($this->cnx,$this->config['basedn'],'(objectClass=*)',array('dn'))){
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$entry = @ldap_get_entries($this->cnx, $read);
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if (!empty($entry[0]['dn'])) {
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return true;
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}
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}
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return false;
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}
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}
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?>
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