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-rw-r--r--plugins/LdapAuthentication/LdapAuthenticationPlugin.php195
-rw-r--r--plugins/LdapAuthentication/README50
2 files changed, 245 insertions, 0 deletions
diff --git a/plugins/LdapAuthentication/LdapAuthenticationPlugin.php b/plugins/LdapAuthentication/LdapAuthenticationPlugin.php
new file mode 100644
index 000000000..f14080b2d
--- /dev/null
+++ b/plugins/LdapAuthentication/LdapAuthenticationPlugin.php
@@ -0,0 +1,195 @@
+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Plugin to enable LDAP Authentication and Authorization
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category Plugin
+ * @package StatusNet
+ * @author Craig Andrews <candrews@integralblue.com>
+ * @copyright 2009 Craig Andrews http://candrews.integralblue.com
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) {
+ exit(1);
+}
+
+require_once INSTALLDIR.'/plugins/Authentication/AuthenticationPlugin.php';
+require_once 'Net/LDAP2.php';
+
+class LdapAuthenticatonPlugin extends AuthenticationPlugin
+{
+ public $host=null;
+ public $port=null;
+ public $version=null;
+ public $starttls=null;
+ public $binddn=null;
+ public $bindpw=null;
+ public $basedn=null;
+ public $options=null;
+ public $filter=null;
+ public $scope=null;
+ public $attributes=array();
+
+ function __construct()
+ {
+ parent::__construct();
+ }
+
+ //---interface implementation---//
+
+ function checkPassword($nickname, $password)
+ {
+ $ldap = $this->ldap_get_connection();
+ if(!$ldap){
+ return false;
+ }
+ $entry = $this->ldap_get_user($nickname);
+ if(!$entry){
+ return false;
+ }else{
+ $config = $this->ldap_get_config();
+ $config['binddn']=$entry->dn();
+ $config['bindpw']=$password;
+ if($this->ldap_get_connection($config)){
+ return true;
+ }else{
+ return false;
+ }
+ }
+ }
+
+ function autoRegister($nickname)
+ {
+ $attributes=array();
+ $config_attributes = array('nickname','email','fullname','homepage','location');
+ foreach($config_attributes as $config_attribute){
+ $value = common_config('ldap', $config_attribute.'_attribute');
+ if($value!==false){
+ array_push($attributes,$value);
+ }
+ }
+ $entry = $this->ldap_get_user($nickname,$attributes);
+ if($entry){
+ $registration_data = array();
+ foreach($config_attributes as $config_attribute){
+ $value = common_config('ldap', $config_attribute.'_attribute');
+ if($value!==false){
+ if($config_attribute=='email'){
+ $registration_data[$config_attribute]=common_canonical_email($entry->getValue($value,'single'));
+ }else if($config_attribute=='nickname'){
+ $registration_data[$config_attribute]=common_canonical_nickname($entry->getValue($value,'single'));
+ }else{
+ $registration_data[$config_attribute]=$entry->getValue($value,'single');
+ }
+ }
+ }
+ //set the database saved password to a random string.
+ $registration_data['password']=common_good_rand(16);
+ $user = User::register($registration_data);
+ return true;
+ }else{
+ //user isn't in ldap, so we cannot register him
+ return null;
+ }
+ }
+
+ function changePassword($nickname,$oldpassword,$newpassword)
+ {
+ //TODO implement this
+ throw new Exception(_('Sorry, changing LDAP passwords is not supported at this time'));
+
+ return false;
+ }
+
+ function canUserChangeField($nickname, $field)
+ {
+ switch($field)
+ {
+ case 'password':
+ case 'nickname':
+ case 'email':
+ return false;
+ }
+ }
+
+ //---utility functions---//
+ function ldap_get_config(){
+ $config = array();
+ $keys = array('host','port','version','starttls','binddn','bindpw','basedn','options','filter','scope');
+ foreach($keys as $key){
+ $value = $this->$key;
+ if($value!==null){
+ $config[$key]=$value;
+ }
+ }
+ return $config;
+ }
+
+ function ldap_get_connection($config = null){
+ if($config == null){
+ $config = $this->ldap_get_config();
+ }
+
+ //cannot use Net_LDAP2::connect() as StatusNet uses
+ //PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, 'handleError');
+ //PEAR handling can be overridden on instance objects, so we do that.
+ $ldap = new Net_LDAP2($config);
+ $ldap->setErrorHandling(PEAR_ERROR_RETURN);
+ $err=$ldap->bind();
+ if (Net_LDAP2::isError($err)) {
+ common_log(LOG_WARNING, 'Could not connect to LDAP server: '.$err->getMessage());
+ return false;
+ }
+ return $ldap;
+ }
+
+ /**
+ * get an LDAP entry for a user with a given username
+ *
+ * @param string $username
+ * $param array $attributes LDAP attributes to retrieve
+ * @return string DN
+ */
+ function ldap_get_user($username,$attributes=array()){
+ $ldap = $this->ldap_get_connection();
+ $filter = Net_LDAP2_Filter::create(common_config('ldap','nickname_attribute'), 'equals', $username);
+ $options = array(
+ 'scope' => 'sub',
+ 'attributes' => $attributes
+ );
+ $search = $ldap->search(null,$filter,$options);
+
+ if (PEAR::isError($search)) {
+ common_log(LOG_WARNING, 'Error while getting DN for user: '.$search->getMessage());
+ return false;
+ }
+
+ if($search->count()==0){
+ return false;
+ }else if($search->count()==1){
+ $entry = $search->shiftEntry();
+ return $entry;
+ }else{
+ common_log(LOG_WARNING, 'Found ' . $search->count() . ' ldap user with the username: ' . $username);
+ return false;
+ }
+ }
+}
diff --git a/plugins/LdapAuthentication/README b/plugins/LdapAuthentication/README
new file mode 100644
index 000000000..03647e7c7
--- /dev/null
+++ b/plugins/LdapAuthentication/README
@@ -0,0 +1,50 @@
+The LDAP Authentication plugin allows for StatusNet to handle authentication through LDAP.
+
+Installation
+============
+add "addPlugin('ldapAuthentication', array('setting'=>'value', 'setting2'=>'value2', ...);" to the bottom of your config.php
+
+Settings
+========
+authoritative (false): Set to true if LDAP's responses are authoritative (meaning if LDAP fails, do check the any other plugins or the internal password database).
+autoregistration (false): Set to true if users should be automatically created when they attempt to login.
+email_changeable (true): Are users allowed to change their email address? (true or false)
+password_changeable (true): Are users allowed to change their passwords? (true or false)
+
+host*: LDAP server name to connect to. You can provide several hosts in an array in which case the hosts are tried from left to right.. See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+port: Port on the server. See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+version: LDAP version. See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+starttls: TLS is started after connecting. See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+binddn: The distinguished name to bind as (username). See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+bindpw: Password for the binddn. See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+basedn*: LDAP base name (root directory). See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+options: See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+filter: Default search filter. See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+scope: Default search scope. See http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
+
+attributes: an array with the key being the StatusNet user attribute name, and the value the LDAP attribute name
+ nickname*
+ email
+ fullname
+ homepage
+ location
+
+* required
+default values are in (parenthesis)
+
+Example
+=======
+Here's an example of an LDAP plugin configuration that connects to Microsoft Active Directory.
+
+addPlugin('ldapAuthentication', array(
+ 'authoritative'=>true,
+ 'autoregistration'=>true,
+ 'binddn'=>'username',
+ 'bindpw'=>'password',
+ 'basedn'=>'OU=Users,OU=StatusNet,OU=US,DC=americas,DC=global,DC=loc',
+ 'host'=>array('server1', 'server2'),
+ 'attributes'=>array(
+ 'nickname'=>'sAMAccountName',
+ 'email'=>'mail',
+ 'fullname'=>'displayName')
+));
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