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-rw-r--r--plugins/Auth/AuthPlugin.php145
-rw-r--r--plugins/Ldap/LdapPlugin.php114
-rw-r--r--plugins/Ldap/README52
-rw-r--r--plugins/Ldap/ldap.php108
4 files changed, 274 insertions, 145 deletions
diff --git a/plugins/Auth/AuthPlugin.php b/plugins/Auth/AuthPlugin.php
new file mode 100644
index 000000000..71e7ae4fb
--- /dev/null
+++ b/plugins/Auth/AuthPlugin.php
@@ -0,0 +1,145 @@
+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Superclass for plugins that do authentication and/or 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>
+ * @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);
+}
+
+/**
+ * Superclass for plugins that do authentication
+ *
+ * @category Plugin
+ * @package StatusNet
+ * @author Craig Andrews <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/
+ */
+
+abstract class AuthPlugin extends Plugin
+{
+ //is this plugin authoritative for authentication?
+ protected $authn_authoritative = false;
+
+ //should accounts be automatically created after a successful login attempt?
+ protected $autoregistration = false;
+
+ //------------Auth plugin should implement some (or all) of these methods------------\\
+ /**
+ * Check if a nickname/password combination is valid
+ * @param nickname
+ * @param password
+ * @return boolean true if the credentials are valid, false if they are invalid.
+ */
+ function checkPassword($nickname, $password)
+ {
+ return false;
+ }
+
+ /**
+ * Automatically register a user when they attempt to login with valid credentials.
+ * User::register($data) is a very useful method for this implementation
+ * @param nickname
+ * @return boolean true if the user was created, false if autoregistration is not allowed, null if this plugin is not responsible for this nickname
+ */
+ function autoRegister($nickname)
+ {
+ return null;
+ }
+
+ /**
+ * Change a user's password
+ * The old password has been verified to be valid by this plugin before this call is made
+ * @param nickname
+ * @param oldpassword
+ * @param newpassword
+ * @return boolean true if the password was changed, false if password changing failed for some reason, null if this plugin is not responsible for this nickname
+ */
+ function changePassword($nickname,$oldpassword,$newpassword)
+ {
+ return null;
+ }
+
+ /**
+ * Can a user change this field in his own profile?
+ * @param nickname
+ * @param field
+ * @return boolean true if the field can be changed, false if not allowed to change it, null if this plugin is not responsible for this nickname
+ */
+ function canUserChangeField($nickname, $field)
+ {
+ return null;
+ }
+
+ //------------Below are the methods that connect StatusNet to the implementing Auth plugin------------\\
+ function __construct()
+ {
+ parent::__construct();
+ }
+
+ function StartCheckPassword($nickname, $password, &$authenticatedUser){
+ $authenticated = $this->checkPassword($nickname, $password);
+ if($authenticated){
+ $authenticatedUser = User::staticGet('nickname', $nickname);
+ if(!$authenticatedUser && $this->autoregistration){
+ if($this->autoregister($nickname)){
+ $authenticatedUser = User::staticGet('nickname', $nickname);
+ }
+ }
+ return false;
+ }else{
+ if($this->authn_authoritative){
+ return false;
+ }
+ }
+ //we're not authoritative, so let other handlers try
+ }
+
+ function onStartChangePassword($nickname,$oldpassword,$newpassword)
+ {
+ $authenticated = $this->checkPassword($nickname, $oldpassword);
+ if($authenticated){
+ $result = $this->changePassword($nickname,$oldpassword,$newpassword);
+ if($result){
+ //stop handling of other handlers, because what was requested was done
+ return false;
+ }else{
+ throw new Exception(_('Password changing failed'));
+ }
+ }else{
+ if($this->authn_authoritative){
+ //since we're authoritative, no other plugin could do this
+ throw new Exception(_('Password changing failed'));
+ }else{
+ //let another handler try
+ return null;
+ }
+ }
+
+ }
+}
+
diff --git a/plugins/Ldap/LdapPlugin.php b/plugins/Ldap/LdapPlugin.php
index 3795ffd7f..8a416bccc 100644
--- a/plugins/Ldap/LdapPlugin.php
+++ b/plugins/Ldap/LdapPlugin.php
@@ -31,38 +31,42 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
-require_once INSTALLDIR.'/plugins/Ldap/ldap.php';
+require_once INSTALLDIR.'/plugins/Auth/AuthPlugin.php';
+require_once 'Net/LDAP2.php';
-class LdapPlugin extends Plugin
+class LdapPlugin extends AuthPlugin
{
- private $config = array();
function __construct()
{
parent::__construct();
}
+
+ //---interface implementation---//
- function onCheckPassword($nickname, $password, &$authenticated)
+ function checkPassword($nickname, $password)
{
- if(ldap_check_password($nickname, $password)){
- $authenticated = true;
- //stop handling of other events, because we have an answer
+ $ldap = $this->ldap_get_connection();
+ if(!$ldap){
return false;
}
- if(common_config('ldap','authoritative')){
- //a false return stops handler processing
+ $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 onAutoRegister($nickname)
+ function autoRegister($nickname)
{
- $user = User::staticGet('nickname', $nickname);
- if (! is_null($user) && $user !== false) {
- common_log(LOG_WARNING, "An attempt was made to autoregister an existing user with nickname: $nickname");
- return;
- }
-
$attributes=array();
$config_attributes = array('nickname','email','fullname','homepage','location');
foreach($config_attributes as $config_attribute){
@@ -71,7 +75,7 @@ class LdapPlugin extends Plugin
array_push($attributes,$value);
}
}
- $entry = ldap_get_user($nickname,$attributes);
+ $entry = $this->ldap_get_user($nickname,$attributes);
if($entry){
$registration_data = array();
foreach($config_attributes as $config_attribute){
@@ -89,21 +93,22 @@ class LdapPlugin extends Plugin
//set the database saved password to a random string.
$registration_data['password']=common_good_rand(16);
$user = User::register($registration_data);
- //prevent other handlers from running, as we have registered the user
- return false;
+ return true;
+ }else{
+ //user isn't in ldap, so we cannot register him
+ return null;
}
}
- function onChangePassword($nickname,$oldpassword,$newpassword,&$errormsg)
+ function changePassword($nickname,$oldpassword,$newpassword)
{
//TODO implement this
- $errormsg = _('Sorry, changing LDAP passwords is not supported at this time');
+ throw new Exception(_('Sorry, changing LDAP passwords is not supported at this time'));
- //return false, indicating that the event has been handled
return false;
}
- function onCanUserChangeField($nickname, $field)
+ function canUserChangeField($nickname, $field)
{
switch($field)
{
@@ -113,4 +118,67 @@ class LdapPlugin extends Plugin
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!==false){
+ $config[$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: ' . $username);
+ return false;
+ }
+ }
}
diff --git a/plugins/Ldap/README b/plugins/Ldap/README
index 617738e0b..1b6e3e75a 100644
--- a/plugins/Ldap/README
+++ b/plugins/Ldap/README
@@ -2,22 +2,46 @@ The LDAP plugin allows for StatusNet to handle authentication, authorization, an
Installation
============
-Add configuration entries to config.php. These entries are:
+add "addPlugin('ldap', array('setting'=>'value', 'setting2'=>'value2', ...);" to the bottom of your config.php
-The following are documented at http://pear.php.net/manual/en/package.networking.net-ldap2.connecting.php
-$config['ldap']['binddn']
-$config['ldap']['bindpw']
-$config['ldap']['basedn']
-$config['ldap']['host']
-$config['ldap']['nickname_attribute'] Set this to the name of the ldap attribute that holds the username. For example, on Microsoft's Active Directory, this should be set to 'sAMAccountName'
-$config['ldap']['nickname_email'] Set this to the name of the ldap attribute that holds the user's email address. For example, on Microsoft's Active Directory, this should be set to 'mail'
-$config['ldap']['nickname_fullname'] Set this to the name of the ldap attribute that holds the user's full name. For example, on Microsoft's Active Directory, this should be set to 'displayName'
-$config['ldap']['nickname_homepage'] Set this to the name of the ldap attribute that holds the the url of the user's home page.
-$config['ldap']['nickname_location'] Set this to the name of the ldap attribute that holds the user's location.
-$config['ldap']['authoritative'] Set to true if LDAP's responses are authoritative (meaning if LDAP fails, do check the any other plugins or the internal password database)
-$config['ldap']['autoregister'] Set to true if users should be automatically created when they attempt to login
+Settings
+========
+authn_authoritative: 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: Set to true if users should be automatically created when they attempt to login.
-Finally, add "addPlugin('ldap');" to the bottom of your config.php
+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
+
+Example
+=======
+Here's an example of an LDAP plugin configuration that connects to Microsoft Active Directory.
+
+addPlugin('ldap', array(
+ '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')
+));
diff --git a/plugins/Ldap/ldap.php b/plugins/Ldap/ldap.php
deleted file mode 100644
index d92a058fb..000000000
--- a/plugins/Ldap/ldap.php
+++ /dev/null
@@ -1,108 +0,0 @@
-<?php
-/*
- * StatusNet - the distributed open-source microblogging tool
- * Copyright (C) 2008, 2009, StatusNet, Inc.
- *
- * 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/>.
- */
-
-if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
-
-require_once 'Net/LDAP2.php';
-
-function ldap_get_config(){
- static $config = null;
- if($config == null){
- $config = array();
- $keys = array('host','port','version','starttls','binddn','bindpw','basedn','options','scope');
- foreach($keys as $key){
- $value = common_config('ldap', $key);
- if($value!==false){
- $config[$key]=$value;
- }
- }
- }
- return $config;
-}
-
-function ldap_get_connection($config = null){
- if($config == null){
- $config = 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 $ldap;
-}
-
-function ldap_check_password($username, $password){
- $ldap = ldap_get_connection();
- if(!$ldap){
- return false;
- }
- $entry = ldap_get_user($username);
- if(!$entry){
- return false;
- }else{
- $config = ldap_get_config();
- $config['binddn']=$entry->dn();
- $config['bindpw']=$password;
- if(ldap_get_connection($config)){
- return true;
- }else{
- return false;
- }
- }
-}
-
-/**
- * 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 = 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;
- }
-}
-
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