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Added Authorization plugin 

Added LDAPAuthorization plugin
This commit is contained in:
Craig Andrews 2009-11-18 14:19:43 -05:00
parent 1d6bacc681
commit d07df8a796
8 changed files with 371 additions and 9 deletions
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22
EVENTS.txt
View File

@ -535,6 +535,28 @@ StartChangePassword: Before changing a password
EndChangePassword: After changing a password
- $user: user
StartSetUser: Before setting the currently logged in user
- $user: user
EndSetUser: After setting the currently logged in user
- $user: user
StartSetApiUser: Before setting the current API user
- $user: user
EndSetApiUser: After setting the current API user
- $user: user
StartHasRole: Before determing if the a profile has a given role
- $profile: profile in question
- $name: name of the role in question
- &$has_role: does this profile have the named role?
EndHasRole: Before determing if the a profile has a given role
- $profile: profile in question
- $name: name of the role in question
- $has_role: does this profile have the named role?
UserDeleteRelated: Specify additional tables to delete entries from when deleting users
- $user: User object
- &$related: array of DB_DataObject class names to delete entries on matching user_id.

11
classes/Profile.php
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@ -594,9 +594,14 @@ class Profile extends Memcached_DataObject
function hasRole($name)
{
$role = Profile_role::pkeyGet(array('profile_id' => $this->id,
'role' => $name));
return (!empty($role));
$has_role = false;
if (Event::handle('StartHasRole', array($this, $name, &$has_role))) {
$role = Profile_role::pkeyGet(array('profile_id' => $this->id,
'role' => $name));
$has_role = !empty($role);
Event::handle('EndHasRole', array($this, $name, $has_role));
}
return $has_role;
}
function grantRole($name)

6
lib/apiauth.php
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@ -110,7 +110,11 @@ class ApiAuthAction extends ApiAction
} else {
$nickname = $this->auth_user;
$password = $this->auth_pw;
$this->auth_user = common_check_user($nickname, $password);
$user = common_check_user($nickname, $password);
if (Event::handle('StartSetApiUser', array(&$user))) {
$this->auth_user = $user;
Event::handle('EndSetApiUser', array($user));
}
if (empty($this->auth_user)) {

13
lib/util.php
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@ -196,10 +196,15 @@ function common_set_user($user)
}
if ($user) {
common_ensure_session();
$_SESSION['userid'] = $user->id;
$_cur = $user;
return $_cur;
if (Event::handle('StartSetUser', array(&$user))) {
if($user){
common_ensure_session();
$_SESSION['userid'] = $user->id;
$_cur = $user;
Event::handle('EndSetUser', array($user));
return $_cur;
}
}
}
return false;
}

112
plugins/Authorization/AuthorizationPlugin.php Normal file
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@ -0,0 +1,112 @@
<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Superclass for plugins that do 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 authorization
*
* @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 AuthorizationPlugin extends Plugin
{
//is this plugin authoritative for authorization?
public $authoritative = false;
//------------Auth plugin should implement some (or all) of these methods------------\\
/**
* Is a user allowed to log in?
* @param user
* @return boolean true if the user is allowed to login, false if explicitly not allowed to login, null if we don't explicitly allow or deny login
*/
function loginAllowed($user) {
return null;
}
/**
* Does a profile grant the user a named role?
* @param profile
* @return boolean true if the profile has the role, false if not
*/
function hasRole($profile, $name) {
return false;
}
//------------Below are the methods that connect StatusNet to the implementing Auth plugin------------\\
function onInitializePlugin(){
}
function onStartSetUser(&$user) {
$loginAllowed = $this->loginAllowed($user);
if($loginAllowed === true){
if($this->authoritative) {
return false;
}else{
return;
}
}else if($loginAllowed === false){
$user = null;
return false;
}else{
if($this->authoritative) {
$user = null;
return false;
}else{
return;
}
}
}
function onStartSetApiUser(&$user) {
return onStartSetUser(&$user);
}
function onStartHasRole($profile, $name, &$has_role) {
if($this->hasRole($profile, $name)){
$has_role = true;
return false;
}else{
if($this->authoritative) {
$has_role = false;
return false;
}else{
return;
}
}
}
}

3
plugins/LdapAuthentication/LdapAuthenticationPlugin.php
View File

@ -2,7 +2,7 @@
/**
* StatusNet, the distributed open-source microblogging tool
*
* Plugin to enable LDAP Authentication and Authorization
* Plugin to enable LDAP Authentication
*
* PHP version 5
*
@ -65,6 +65,7 @@ class LdapAuthenticationPlugin extends AuthenticationPlugin
}
if($this->password_changeable && (! isset($this->attributes['password']) || !isset($this->password_encoding))){
throw new Exception("if password_changeable is set, the password attribute and password_encoding must also be specified");
}
}
//---interface implementation---//

129
plugins/LdapAuthorization/LdapAuthorizationPlugin.php Normal file
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@ -0,0 +1,129 @@
<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Plugin to enable LDAP 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/Authorization/AuthorizationPlugin.php';
require_once 'Net/LDAP2.php';
class LdapAuthorizationPlugin extends AuthorizationPlugin
{
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 $provider_name = null;
public $uniqueMember_attribute = null;
public $roles_to_groups = null;
function onInitializePlugin(){
parent::onInitializePlugin();
if(!isset($this->host)){
throw new Exception("must specify a host");
}
if(!isset($this->basedn)){
throw new Exception("must specify a basedn");
}
if(!isset($this->provider_name)){
throw new Exception("provider_name must be set. Use the provider_name from the LDAP Authentication plugin.");
}
if(!isset($this->uniqueMember_attribute)){
throw new Exception("uniqueMember_attribute must be set.");
}
if(!isset($this->roles_to_groups)){
throw new Exception("roles_to_groups must be set.");
}
}
//---interface implementation---//
function loginAllowed($user) {
$user_username = new User_username();
$user_username->user_id=$user->id;
$user_username->provider_name=$this->provider_name;
if($user_username->find() && $user_username->fetch()){
$entry = $this->ldap_get_user($user_username->username);
if($entry){
//if a user exists, we can assume he's allowed to login
return true;
}else{
return null;
}
}else{
return null;
}
}
function hasRole($profile, $name) {
$user_username = new User_username();
$user_username->user_id=$profile->id;
$user_username->provider_name=$this->provider_name;
if($user_username->find() && $user_username->fetch()){
$entry = $this->ldap_get_user($user_username->username);
if($entry){
if(isset($this->roles_to_groups[$name])){
if(is_array($this->roles_to_groups[$name])){
foreach($this->roles_to_groups[$name] as $group){
if($this->isMemberOfGroup($entry->dn(),$group)){
return true;
}
}
}else{
if($this->isMemberOfGroup($entry->dn(),$this->roles_to_groups[$name])){
return true;
}
}
}
}
}
return false;
}
function isMemberOfGroup($userDn, $groupDn)
{
$ldap = ldap_get_connection();
$link = $ldap->getLink();
$r = ldap_compare($link, $groupDn, $this->uniqueMember_attribute, $userDn);
if ($r === true){
return true;
}else if($r === false){
return false;
}else{
common_log(LOG_ERR, ldap_error($r));
return false;
}
}
}

84
plugins/LdapAuthorization/README Normal file
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@ -0,0 +1,84 @@
The LDAP Authorization plugin allows for StatusNet to handle authorization
through LDAP.
Installation
============
add "addPlugin('ldapAuthorization',
array('setting'=>'value', 'setting2'=>'value2', ...);"
to the bottom of your config.php
You *cannot* use this plugin without the LDAP Authentication plugin
Settings
========
provider_name*: name of the LDAP authentication provider that this plugin works with.
authoritative (false): should this plugin be authoritative for
authorization?
uniqueMember_attribute ('uniqueMember')*: the attribute of a group
that lists the DNs of its members
roles_to_groups*: array that maps StatusNet roles to LDAP groups
some StatusNet roles are: moderator, administrator, sandboxed, silenced
The below settings must be exact copies of the settings used for the
corresponding LDAP Authentication plugin.
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
* 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(
'provider_name'=>'Example',
'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'),
'password_encoding'=>'ad',
'attributes'=>array(
'username'=>'sAMAccountName',
'nickname'=>'sAMAccountName',
'email'=>'mail',
'fullname'=>'displayName',
'password'=>'unicodePwd')
));
addPlugin('ldapAuthorization', array(
'provider_name'=>'Example',
'authoritative'=>false,
'uniqueMember_attribute'=>'uniqueMember',
'roles_to_groups'=> array(
'moderator'=>'CN=SN-Moderators,OU=Users,OU=StatusNet,OU=US,DC=americas,DC=global,DC=loc',
'administrator'=> array('CN=System-Adminstrators,OU=Users,OU=StatusNet,OU=US,DC=americas,DC=global,DC=loc',
'CN=SN-Administrators,OU=Users,OU=StatusNet,OU=US,DC=americas,DC=global,DC=loc')
),
'binddn'=>'username',
'bindpw'=>'password',
'basedn'=>'OU=Users,OU=StatusNet,OU=US,DC=americas,DC=global,DC=loc',
'host'=>array('server1', 'server2')
));