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phpldapadmin/lib/ds_ldap.php
Patrick Monnerat b035e8a0f4 Do not use function is_resource(). 
PHP 8.1 replaces some kind of resources by built-in class instances.
As is_resource() is always used to test for failures, replace calls by
simple Boolean checks.
2022-08-05 10:48:56 +10:00

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<?php
/**
* Classes and functions for communication of Data Stores
*
* @author The phpLDAPadmin development team
* @package phpLDAPadmin
*/
/**
* This abstract class provides the basic variables and methods for LDAP datastores
*
* @package phpLDAPadmin
* @subpackage DataStore
*/
class ldap extends DS {
# If we fail to connect, set this to true
private $noconnect = false;
# Raw Schema entries
private $_schema_entries = null;
# Schema DN
private $_schemaDN = null;
public function __construct($index) {
if (defined('DEBUG_ENABLED') && DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$this->index = $index;
$this->type = 'ldap';
# Additional values that can go in our config.php
$this->custom = new StdClass;
$this->default = new StdClass;
/*
* Not used by PLA
# Database Server Variables
$this->default->server['db'] = array(
'desc'=>'Database Name',
'untested'=>true,
'default'=>null);
*/
/* This was created for IDS - since it doesnt present STRUCTURAL against objectClasses
* definitions when reading the schema.*/
$this->default->server['schema_oclass_default'] = array(
'desc'=>'When reading the schema, and it doesnt specify objectClass type, default it to this',
'default'=>null);
$this->default->server['base'] = array(
'desc'=>'LDAP Base DNs',
'default'=>array());
$this->default->server['tls'] = array(
'desc'=>'Connect using TLS',
'default'=>false);
$this->default->server['tls_cacert'] = array(
'desc'=>'TLS Certificate Authority',
'default'=>null);
$this->default->server['tls_cacertdir'] = array(
'desc'=>'TLS Certificate Authority Directory',
'default'=>null);
$this->default->server['tls_cert'] = array(
'desc'=>'TLS Client Certificate',
'default'=>null);
$this->default->server['tls_key'] = array(
'desc'=>'TLS Client Certificate Key',
'default'=>null);
# Login Details
$this->default->login['attr'] = array(
'desc'=>'Attribute to use to find the users DN',
'default'=>'dn');
$this->default->login['anon_bind'] = array(
'desc'=>'Enable anonymous bind logins',
'default'=>true);
$this->default->login['allowed_dns'] = array(
'desc'=>'Limit logins to users who match any of the following LDAP filters',
'default'=>array());
$this->default->login['base'] = array(
'desc'=>'Limit logins to users who are in these base DNs',
'default'=>array());
$this->default->login['class'] = array(
'desc'=>'Strict login to users containing a specific objectClasses',
'default'=>array());
$this->default->proxy['attr'] = array(
'desc'=>'Attribute to use to find the users DN for proxy based authentication',
'default'=>array());
# SASL configuration
$this->default->sasl['mech'] = array(
'desc'=>'SASL mechanism used while binding LDAP server',
'default'=>'GSSAPI');
$this->default->sasl['realm'] = array(
'desc'=>'SASL realm name',
'untested'=>true,
'default'=>null);
$this->default->sasl['authz_id'] = array(
'desc'=>'SASL authorization id',
'untested'=>true,
'default'=>null);
$this->default->sasl['authz_id_regex'] = array(
'desc'=>'SASL authorization id PCRE regular expression',
'untested'=>true,
'default'=>null);
$this->default->sasl['authz_id_replacement'] = array(
'desc'=>'SASL authorization id PCRE regular expression replacement string',
'untested'=>true,
'default'=>null);
$this->default->sasl['props'] = array(
'desc'=>'SASL properties',
'untested'=>true,
'default'=>null);
}
/**
* Set LDAP option with error checking...
*
* @param resource Connection resource
* @param string Name of option to set
* @param mixed Option value
* @return boolean false if error
*/
private function setLdapOption($resource, $option, $value) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',16,0,__FILE__,__LINE__,__METHOD__,$fargs);
if (! defined($option)) {
system_message(array(
'title'=>sprintf('%s',_('Undefined LDAP option')),
'body'=>sprintf('<b>%s</b>: %s <b>%s</b>',_('Error'),_('Required LDAP option not defined'),$option),
'type'=>'error'));
return false;
}
if (! @ldap_set_option($resource,constant($option),$value)) {
system_message(array(
'title'=>sprintf('%s',_('Failed to set LDAP option')),
'body'=>sprintf('<b>%s</b>: %s <b>%s</b>',_('Error'),_('Failed to set LDAP option'),$option),
'type'=>'error'));
return false;
}
return true;
}
/**
* Required ABSTRACT functions
*/
/**
* Connect and Bind to the Database
*
* @param string Which connection method resource to use
* @return resource|null Connection resource if successful, null if not.
*/
protected function connect($method,$debug=false,$new=false) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
static $CACHE = array();
$method = $this->getMethod($method);
$bind = array();
if (isset($CACHE[$this->index][$method]) && $CACHE[$this->index][$method])
return $CACHE[$this->index][$method];
# Check if we have logged in and therefore need to use those details as our bind.
$bind['id'] = is_null($this->getLogin($method)) && $method != 'anon' ? $this->getLogin('user') : $this->getLogin($method);
$bind['pass'] = is_null($this->getPassword($method)) && $method != 'anon' ? $this->getPassword('user') : $this->getPassword($method);
# If our bind id is still null, we are not logged in.
if (is_null($bind['id']) && ! in_array($method,array('anon','login')))
return null;
# If we bound to the LDAP server with these details for a different connection, return that resource
if (isset($CACHE[$this->index]) && ! $new)
foreach ($CACHE[$this->index] as $cachedmethod => $resource) {
if (($this->getLogin($cachedmethod) == $bind['id']) && ($this->getPassword($cachedmethod) == $bind['pass'])) {
$CACHE[$this->index][$method] = $resource;
return $CACHE[$this->index][$method];
}
}
$CACHE[$this->index][$method] = null;
# No identifiable connection exists, lets create a new one.
if (DEBUG_ENABLED)
debug_log('Creating NEW connection [%s] for index [%s]',16,0,__FILE__,__LINE__,__METHOD__,
$method,$this->index);
if (function_exists('run_hook'))
run_hook('pre_connect',array('server_id'=>$this->index,'method'=>$method));
if ($this->getValue('server','port'))
$resource = ldap_connect($this->getValue('server','host'),$this->getValue('server','port'));
else
$resource = ldap_connect($this->getValue('server','host'));
$this->noconnect = false;
$CACHE[$this->index][$method] = $resource;
if (DEBUG_ENABLED)
debug_log('LDAP Resource [%s], Host [%s], Port [%s]',16,0,__FILE__,__LINE__,__METHOD__,
$resource,$this->getValue('server','host'),$this->getValue('server','port'));
if (!$resource)
debug_dump_backtrace('UNHANDLED, $resource is not a resource',1);
# Go with LDAP version 3 if possible (needed for renaming and Novell schema fetching)
if (! $this->setLdapOption($resource,'LDAP_OPT_PROTOCOL_VERSION',3))
$this->noconnect = true;
/* Disabling this makes it possible to browse the tree for Active Directory, and seems
* to not affect other LDAP servers (tested with OpenLDAP) as phpLDAPadmin explicitly
* specifies deref behavior for each ldap_search operation. */
elseif (! $this->setLdapOption($resource,'LDAP_OPT_REFERRALS',0))
$this->noconnect = true;
/* Enabling manageDsaIt to be able to browse through glued entries
* 2.16.840.1.113730.3.4.2 : "ManageDsaIT Control" "RFC 3296" "The client may provide
* the ManageDsaIT control with an operation to indicate that the operation is intended
* to manage objects within the DSA (server) Information Tree. The control causes
* Directory-specific entries (DSEs), regardless of type, to be treated as normal entries
* allowing clients to interrogate and update these entries using LDAP operations." */
elseif (! $this->setLdapOption($resource,'LDAP_OPT_SERVER_CONTROLS',array(array('oid'=>'2.16.840.1.113730.3.4.2'))))
$this->noconnect = true;
# Try to fire up TLS is specified in the config
if ($this->isTLSEnabled() && !$this->noconnect)
if(! $this->startTLS($resource))
$this->noconnect = true;
# If SASL has been configured for binding, then start it now.
if ($this->noconnect)
$bind['result'] = false;
elseif ($this->isSASLEnabled())
$bind['result'] = $this->startSASL($resource,$method,$bind['id'],$bind['pass']);
# Normal bind...
else
$bind['result'] = @ldap_bind($resource,$bind['id'],$bind['pass']);
if ($debug)
debug_dump(array('method'=>$method,'bind'=>$bind,'USER'=>$_SESSION['USER']));
if (DEBUG_ENABLED)
debug_log('Resource [%s], Bind Result [%s]',16,0,__FILE__,__LINE__,__METHOD__,$resource,$bind);
if (! $bind['result']) {
if (DEBUG_ENABLED)
debug_log('Leaving with FALSE, bind FAILed',16,0,__FILE__,__LINE__,__METHOD__);
if (! $this->noconnect) {
$this->noconnect = true;
system_message(array(
'title'=>sprintf('%s %s',_('Unable to connect to LDAP server'),$this->getName()),
'body'=>sprintf('<b>%s</b>: %s (%s) for <b>%s</b>',_('Error'),$this->getErrorMessage($method),$this->getErrorNum($method),$method),
'type'=>'error'));
}
$CACHE[$this->index][$method] = null;
} else {
# If this is a proxy session, we need to switch to the proxy user
if ($this->isProxyEnabled() && $bind['id'] && $method != 'anon')
if (! $this->startProxy($resource,$method)) {
$this->noconnect = true;
$CACHE[$this->index][$method] = null;
}
}
if (function_exists('run_hook'))
run_hook('post_connect',array('server_id'=>$this->index,'method'=>$method,'id'=>$bind['id']));
if ($debug)
debug_dump(array($method=>$CACHE[$this->index][$method]));
return $CACHE[$this->index][$method];
}
/**
* Login to the database with the application user/password
*
* @return boolean true|false for successful login.
*/
public function login($user=null,$pass=null,$method=null,$new=false) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$userDN = null;
# Get the userDN from the username.
if (! is_null($user)) {
# If login,attr is set to DN, then user should be a DN
if (($this->getValue('login','attr') == 'dn') || $method != 'user')
$userDN = $this->getValue('login', 'bind_dn_template') ? $this->fillDNTemplate($user) : $user;
else
$userDN = $this->getLoginID($user,'login');
if (! $userDN && $this->getValue('login','fallback_dn') && strpos($user, '='))
$userDN = $user;
if (! $userDN)
return false;
} else {
if (in_array($method,array('user','anon'))) {
$method = 'anon';
$userDN = '';
$pass = '';
} else {
$userDN = $this->getLogin('user');
$pass = $this->getPassword('user');
}
}
if (! $this->isAnonBindAllowed() && ! trim($userDN))
return false;
# Temporarily set our user details
$this->setLogin($userDN,$pass,$method);
$connect = $this->connect($method,false,$new);
# If we didnt log in...
if (!$connect || $this->noconnect || ! $this->userIsAllowedLogin($userDN)) {
$this->logout($method);
return false;
} else
return true;
}
/**
* Perform a query to the Database
*
* @param string query to perform
* $query['base']
* $query['filter']
* $query['scope']
* $query['attrs'] = array();
* $query['deref']
* @param string Which connection method resource to use
* @param string Index items according to this key
* @param boolean Enable debugging output
* @return array|null Results of query.
*/
public function query($query,$method,$index=null,$debug=false) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$attrs_only = 0;
# Defaults
if (! isset($query['attrs']))
$query['attrs'] = array();
else
# Re-index the attrs, PHP throws an error if the keys are not sequential from 0.
$query['attrs'] = array_values($query['attrs']);
if (! isset($query['base'])) {
$bases = $this->getBaseDN();
$query['base'] = array_shift($bases);
}
if (! isset($query['deref']))
$query['deref'] = $_SESSION[APPCONFIG]->getValue('deref','search');
if (! isset($query['filter']))
$query['filter'] = '(&(objectClass=*))';
if (! isset($query['scope']))
$query['scope'] = 'sub';
if (! isset($query['size_limit']))
$query['size_limit'] = 0;
if (! isset($query['time_limit']))
$query['time_limit'] = 0;
if ($query['scope'] == 'base' && ! isset($query['baseok']))
system_message(array(
'title'=>sprintf('Dont call %s',__METHOD__),
'body'=>sprintf('Use getDNAttrValues for base queries [%s]',$query['base']),
'type'=>'info'));
if (is_array($query['base'])) {
system_message(array(
'title'=>_('Invalid BASE for query'),
'body'=>_('The query was cancelled because of an invalid base.'),
'type'=>'error'));
return array();
}
if (DEBUG_ENABLED)
debug_log('%s search PREPARE.',16,0,__FILE__,__LINE__,__METHOD__,$query['scope']);
if ($debug)
debug_dump(array('query'=>$query,'server'=>$this->getIndex(),'con'=>$this->connect($method)));
$search = null;
$resource = $this->connect($method,$debug);
if ($resource)
switch ($query['scope']) {
case 'base':
$search = @ldap_read($resource,$query['base'],$query['filter'],$query['attrs'],$attrs_only,$query['size_limit'],$query['time_limit'],$query['deref']);
break;
case 'one':
$search = @ldap_list($resource,$query['base'],$query['filter'],$query['attrs'],$attrs_only,$query['size_limit'],$query['time_limit'],$query['deref']);
break;
case 'sub':
default:
$search = @ldap_search($resource,$query['base'],$query['filter'],$query['attrs'],$attrs_only,$query['size_limit'],$query['time_limit'],$query['deref']);
break;
}
if ($debug)
debug_dump(array('method'=>$method,'search'=>$search,'error'=>$this->getErrorMessage()));
if (DEBUG_ENABLED)
debug_log('Search scope [%s] base [%s] filter [%s] attrs [%s] COMPLETE (%s).',16,0,__FILE__,__LINE__,__METHOD__,
$query['scope'],$query['base'],$query['filter'],$query['attrs'],is_null($search));
if (! $search)
return array();
$return = array();
# Get the first entry identifier
if ($entries = ldap_get_entries($resource,$search)) {
# Remove the count
if (isset($entries['count']))
unset($entries['count']);
# Iterate over the entries
foreach ($entries as $a => $entry) {
if (! isset($entry['dn']))
debug_dump_backtrace('No DN?',1);
# Remove the none entry references.
if (! is_array($entry)) {
unset($entries[$a]);
continue;
}
$dn = $entry['dn'];
unset($entry['dn']);
# Iterate over the attributes
foreach ($entry as $b => $attrs) {
# Remove the none entry references.
if (! is_array($attrs)) {
unset($entry[$b]);
continue;
}
# Remove the count
if (isset($entry[$b]['count']))
unset($entry[$b]['count']);
}
# Our queries always include the DN (the only value not an array).
$entry['dn'] = $dn;
$return[$dn] = $entry;
}
# Sort our results
foreach ($return as $key=> $values)
ksort($return[$key]);
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',17,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* Get the last error string
*
* @param string Which connection method resource to use
*/
public function getErrorMessage($method=null) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
return ldap_error($this->connect($method));
}
/**
* Get the last error number
*
* @param string Which connection method resource to use
*/
public function getErrorNum($method=null) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
return ldap_errno($this->connect($method));
}
/**
* Additional functions
*/
/**
* Get a user ID
*
* @param string Which connection method resource to use
*/
public function getLoginID($user,$method=null) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$query['filter'] = sprintf('(&(%s=%s)%s)',
$this->getValue('login','attr'),$user,
$this->getLoginClass() ? sprintf('(objectclass=%s)',join(')(objectclass=',$this->getLoginClass())) : '');
$query['attrs'] = array('dn');
$result = array();
foreach ($this->getLoginBaseDN() as $base) {
$query['base'] = $base;
$result = $this->query($query,$method);
if (count($result) == 1)
break;
}
if (count($result) != 1)
return null;
$detail = array_shift($result);
if (! isset($detail['dn']))
die('ERROR: DN missing?');
else
return $detail['dn'];
}
/**
* Return the login base DNs
* If no login base DNs are defined, then the LDAP server Base DNs are used.
*/
private function getLoginBaseDN() {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,1,__FILE__,__LINE__,__METHOD__,$fargs);
if ($this->getValue('login','base'))
return $this->getValue('login','base');
else
return $this->getBaseDN();
}
private function fillDNTemplate($user) {
foreach($this->getLoginBaseDN() as $base)
if(substr_compare($user, $base, -strlen($base)) === 0)
return $user; // $user already passed as DN
// fill template
return sprintf($this->getValue('login', 'bind_dn_template'), preg_replace('/([,\\\\#+<>;"=])/', '\\\\$1', $user));
}
/**
* Return the login classes that a user must have to login
*/
private function getLoginClass() {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,1,__FILE__,__LINE__,__METHOD__,$fargs);
return $this->getValue('login','class');
}
/**
* Return if anonymous bind is allowed in the configuration
*/
public function isAnonBindAllowed() {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
return $this->getValue('login','anon_bind');
}
/**
* Fetches whether TLS has been configured for use with a certain server.
*
* Users may configure phpLDAPadmin to use TLS in config,php thus:
* <code>
* $servers->setValue('server','tls',true|false);
* </code>
*
* @return boolean
*/
private function isTLSEnabled() {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
if ($this->getValue('server','tls') && ! function_exists('ldap_start_tls')) {
error(_('TLS has been enabled in your config, but your PHP install does not support TLS. TLS will be disabled.'),'warn');
return false;
} else
return $this->getValue('server','tls');
}
/**
* If TLS is configured, then start it
*/
private function startTLS($resource) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
// LDAP_OPT_X_TLS_ options must be set globally ($res = null)
// until LDAP_OPT_X_TLS_NEWCTX is exported,
// NOTE: new values will require php-fpm or other stateful
// php servers to be restarted, and are global for all php
// users in the process pool!
$val = $this->getValue('server','tls_cacert');
if (! empty($val))
if (! $this->setLdapOption(null, 'LDAP_OPT_X_TLS_CACERTFILE', $val))
return false;
$val = $this->getValue('server','tls_cacertdir');
if (! empty($val))
if (! $this->setLdapOption(null, 'LDAP_OPT_X_TLS_CACERTDIR', $val))
return false;
$val = $this->getValue('server','tls_cert');
if (! empty($val))
if (! $this->setLdapOption(null, 'LDAP_OPT_X_TLS_CERTFILE', $val))
return false;
$val = $this->getValue('server','tls_key');
if (! empty($val))
if (! $this->setLdapOption(null, 'LDAP_OPT_X_TLS_KEYFILE', $val))
return false;
if (! @ldap_start_tls($resource)) {
$diag_error='';
ldap_get_option($resource, LDAP_OPT_DIAGNOSTIC_MESSAGE, $diag_error);
if (! empty($diag_error)) {
$diag_error = '<br>'.$diag_error;
}
$error = ldap_error($resource);
system_message(array(
'title'=>sprintf('%s (%s)',_('Could not start TLS.'),$this->getName()),
'body'=>sprintf('<b>%s</b>: %s %s%s',_('Error'),_('Could not start TLS.'),$error,$diag_error),
'type'=>'error'));
return false;
} else
return true;
}
/**
* Fetches whether SASL has been configured for use with a certain server.
*
* Users may configure phpLDAPadmin to use SASL in config,php thus:
* <code>
* $servers->setValue('login','auth_type','sasl');
* OR
* $servers->setValue('sasl','mech','PLAIN');
* OR
* $servers->setValue('login','auth_type','sasl_external');
* </code>
*
* @return boolean
*/
private function isSASLEnabled() {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
if (! in_array($this->getValue('login','auth_type'), array('sasl','sasl_external'))) {
// check if SASL mech uses login from other auth_types
if (! in_array(strtolower($this->getValue('sasl', 'mech')), array('plain')))
return false;
}
if (! function_exists('ldap_sasl_bind')) {
error(_('SASL has been enabled in your config, but your PHP install does not support SASL. SASL will be disabled.'),'warn');
return false;
}
# If we get here, SASL must be configured.
return true;
}
/**
* If SASL is configured, then start it
* To be able to use SASL, PHP should have been compliled with --with-ldap-sasl=DIR
*
* @todo This has not been tested, please let the developers know if this function works as expected.
*/
private function startSASL($resource,$method,$login,$pass) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
static $CACHE = array();
# We shouldnt be doing SASL binds for anonymous queries?
if ($method == 'anon')
return false;
# EXTERNAL mech is really a different authType
if ($this->getAuthType() == 'sasl_external') {
return @ldap_sasl_bind($resource,NULL,NULL,
'EXTERNAL',NULL,NULL,
$this->getValue('sasl','props'));
}
# At the moment, we have only implemented GSSAPI and PLAIN
if (! in_array(strtolower($this->getValue('sasl','mech')),array('gssapi','plain'))) {
system_message(array(
'title'=>_('SASL Method not implemented'),
'body'=>sprintf('<b>%s</b>: %s %s',_('Error'),$this->getValue('sasl','mech'),_('has not been implemented yet')),
'type'=>'error'));
return false;
}
if (strtolower($this->getValue('sasl','mech')) == 'plain') {
return @ldap_sasl_bind($resource,NULL,$pass,'PLAIN',
$this->getValue('sasl','realm'),
$login,
$this->getValue('sasl','props'));
}
if (! isset($CACHE['login_dn']))
$CACHE['login_dn'] = $login;
$CACHE['authz_id'] = '';
/*
# Do we need to rewrite authz_id?
if (! isset($CACHE['authz_id']))
if (! trim($this->getValue('sasl','authz_id')) && strtolower($this->getValue('sasl','mech')) != 'gssapi') {
if (DEBUG_ENABLED)
debug_log('Rewriting bind DN [%s] -> authz_id with regex [%s] and replacement [%s].',9,0,__FILE__,__LINE__,__METHOD__,
$CACHE['login_dn'],
$this->getValue('sasl','authz_id_regex'),
$this->getValue('sasl','authz_id_replacement'));
$CACHE['authz_id'] = @preg_replace($this->getValue('sasl','authz_id_regex'),
$this->getValue('sasl','authz_id_replacement'),$CACHE['login_dn']);
# Invalid regex?
if (is_null($CACHE['authz_id']))
error(sprintf(_('It seems that sasl_authz_id_regex "%s" contains invalid PCRE regular expression. The error is "%s".'),
$this->getValue('sasl','authz_id_regex'),(isset($php_errormsg) ? $php_errormsg : '')),
'error','index.php');
if (DEBUG_ENABLED)
debug_log('Resource [%s], SASL OPTIONS: mech [%s], realm [%s], authz_id [%s], props [%s]',9,0,__FILE__,__LINE__,__METHOD__,
$resource,
$this->getValue('sasl','mech'),
$this->getValue('sasl','realm'),
$CACHE['authz_id'],
$this->getValue('sasl','props'));
} else
$CACHE['authz_id'] = $this->getValue('sasl','authz_id');
*/
# @todo this function is different in PHP5.1 and PHP5.2
return @ldap_sasl_bind($resource,NULL,'',
$this->getValue('sasl','mech'),
$this->getValue('sasl','realm'),
$CACHE['authz_id'],
$this->getValue('sasl','props'));
}
/**
* Fetches whether PROXY AUTH has been configured for use with a certain server.
*
* Users may configure phpLDAPadmin to use PROXY AUTH in config,php thus:
* <code>
* $servers->setValue('login','auth_type','proxy');
* </code>
*
* @return boolean
*/
private function isProxyEnabled() {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
return $this->getValue('login','auth_type') == 'proxy' ? true : false;
}
/**
* If PROXY AUTH is configured, then start it
*/
private function startProxy($resource,$method) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$rootdse = $this->getRootDSE();
if (! (isset($rootdse['supportedcontrol']) && in_array('2.16.840.1.113730.3.4.18',$rootdse['supportedcontrol']))) {
system_message(array(
'title'=>sprintf('%s %s',_('Unable to start proxy connection'),$this->getName()),
'body'=>sprintf('<b>%s</b>: %s',_('Error'),_('Your LDAP server doesnt seem to support this control')),
'type'=>'error'));
return false;
}
$filter = '(&';
$dn = '';
$missing = false;
foreach ($this->getValue('proxy','attr') as $attr => $var) {
if (! isset($_SERVER[$var])) {
system_message(array(
'title'=>sprintf('%s %s',_('Unable to start proxy connection'),$this->getName()),
'body'=>sprintf('<b>%s</b>: %s (%s)',_('Error'),_('Attribute doesnt exist'),$var),
'type'=>'error'));
$missing = true;
} else {
if ($attr == 'dn') {
$dn = $var;
break;
} else
$filter .= sprintf('(%s=%s)',$attr,$_SERVER[$var]);
}
}
if ($missing)
return false;
$filter .= ')';
if (! $dn) {
$query['filter'] = $filter;
foreach ($this->getBaseDN() as $base) {
$query['base'] = $base;
if ($search = $this->query($query,$method))
break;
}
if (count($search) != 1) {
system_message(array(
'title'=>sprintf('%s %s',_('Unable to start proxy connection'),$this->getName()),
'body'=>sprintf('<b>%s</b>: %s (%s)',_('Error'),_('Search for DN returned the incorrect number of results'),count($search)),
'type'=>'error'));
return false;
}
$search = array_pop($search);
$dn = $search['dn'];
}
$ctrl = array(
'oid'=>'2.16.840.1.113730.3.4.18',
'value'=>sprintf('dn:%s',$dn),
'iscritical' => true);
if (! @ldap_set_option($resource,LDAP_OPT_SERVER_CONTROLS,array($ctrl))) {
system_message(array(
'title'=>sprintf('%s %s',_('Unable to start proxy connection'),$this->getName()),
'body'=>sprintf('<b>%s</b>: %s (%s) for <b>%s</b>',_('Error'),$this->getErrorMessage($method),$this->getErrorNum($method),$method),
'type'=>'error'));
return false;
}
$_SESSION['USER'][$this->index][$method]['proxy'] = blowfish_encrypt($dn);
return true;
}
/**
* Modify attributes of a DN
*/
public function modify($dn,$attrs,$method=null) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
# We need to supress the error here - programming should detect and report it.
return @ldap_mod_replace($this->connect($method),$dn,$attrs);
}
/**
* Gets the root DN of the specified LDAPServer, or null if it
* can't find it (ie, the server won't give it to us, or it isnt
* specified in the configuration file).
*
* Tested with OpenLDAP 2.0, Netscape iPlanet, and Novell eDirectory 8.7 (nldap.com)
* Please report any and all bugs!!
*
* Please note: On FC systems, it seems that php_ldap uses /etc/openldap/ldap.conf in
* the search base if it is blank - so edit that file and comment out the BASE line.
*
* @param string Which connection method resource to use
* @return array dn|null The root DN of the server on success (string) or null on error.
* @todo Sort the entries, so that they are in the correct DN order.
*/
public function getBaseDN($method=null) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
static $CACHE;
$method = $this->getMethod($method);
$result = array();
if (isset($CACHE[$this->index][$method]))
return $CACHE[$this->index][$method];
# If the base is set in the configuration file, then just return that.
if (count($this->getValue('server','base'))) {
if (DEBUG_ENABLED)
debug_log('Return BaseDN from Config [%s]',17,0,__FILE__,__LINE__,__METHOD__,implode('|',$this->getValue('server','base')));
$CACHE[$this->index][$method] = $this->getValue('server','base');
# We need to figure it out.
} else {
if (DEBUG_ENABLED)
debug_log('Connect to LDAP to find BaseDN',80,0,__FILE__,__LINE__,__METHOD__);
# Set this to empty, in case we loop back here looking for the baseDNs
$CACHE[$this->index][$method] = array();
$results = $this->getDNAttrValues('',$method);
if (isset($results['namingcontexts'])) {
if (DEBUG_ENABLED)
debug_log('LDAP Entries:%s',80,0,__FILE__,__LINE__,__METHOD__,implode('|',$results['namingcontexts']));
$result = $results['namingcontexts'];
}
$CACHE[$this->index][$method] = $result;
}
return $CACHE[$this->index][$method];
}
/**
* Gets whether an entry exists based on its DN. If the entry exists,
* returns true. Otherwise returns false.
*
* @param string The DN of the entry of interest.
* @param string Which connection method resource to use
* @return boolean
*/
public function dnExists($dn,$method=null) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$results = $this->getDNAttrValues($dn,$method);
if ($results)
return $results;
else
return false;
}
/**
* Given a DN string, this returns the top container portion of the string.
*
* @param string The DN whose container string to return.
* @return string The container
*/
public function getContainerTop($dn) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$return = $dn;
foreach ($this->getBaseDN() as $base) {
if (preg_match("/${base}$/i",$dn)) {
$return = $base;
break;
}
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',17,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* Given a DN string and a path like syntax, this returns the parent container portion of the string.
*
* @param string The DN whose container string to return.
* @param string Either '/', '.' or something like '../../<rdn>'
* @return string The container
*/
public function getContainerPath($dn,$path='..') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$top = $this->getContainerTop($dn);
if ($path[0] == '/') {
$dn = $top;
$path = substr($path,1);
} elseif ($path == '.') {
return $dn;
}
$parenttree = explode('/',$path);
foreach ($parenttree as $key => $value) {
if ($value == '..') {
if ($this->getContainer($dn))
$dn = $this->getContainer($dn);
if ($dn == $top)
continue;
} elseif($value)
$dn = sprintf('%s,%s',$value,$dn);
else
break;
}
if (! $dn) {
debug_dump(array(__METHOD__,'dn'=>$dn,'path'=>$path));
debug_dump_backtrace('Container is empty?',1);
}
return $dn;
}
/**
* Given a DN string, this returns the parent container portion of the string.
* For example. given 'cn=Manager,dc=example,dc=com', this function returns
* 'dc=example,dc=com'.
*
* @param string The DN whose container string to return.
* @return string The container
*/
public function getContainer($dn) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$parts = $this->explodeDN($dn);
if (count($parts) <= 1)
$return = null;
else {
$return = $parts[1];
for ($i=2;$i<count($parts);$i++)
$return .= sprintf(',%s',$parts[$i]);
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',17,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* Gets a list of child entries for an entry. Given a DN, this function fetches the list of DNs of
* child entries one level beneath the parent. For example, for the following tree:
*
* <code>
* dc=example,dc=com
* ou=People
* cn=Dave
* cn=Fred
* cn=Joe
* ou=More People
* cn=Mark
* cn=Bob
* </code>
*
* Calling <code>getContainerContents("ou=people,dc=example,dc=com")</code>
* would return the following list:
*
* <code>
* cn=Dave
* cn=Fred
* cn=Joe
* ou=More People
* </code>
*
* @param string The DN of the entry whose children to return.
* @param string Which connection method resource to use
* @param int (optional) The maximum number of entries to return.
* If unspecified, no limit is applied to the number of entries in the returned.
* @param string (optional) An LDAP filter to apply when fetching children, example: "(objectClass=inetOrgPerson)"
* @param constant (optional) The LDAP deref setting to use in the query
* @return array An array of DN strings listing the immediate children of the specified entry.
*/
public function getContainerContents($dn,$method=null,$size_limit=0,$filter='(objectClass=*)',$deref=LDAP_DEREF_NEVER) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$return = array();
$query = array();
$query['base'] = $this->escapeDN($dn);
$query['attrs'] = array('dn');
$query['filter'] = $filter;
$query['deref'] = $deref;
$query['scope'] = 'one';
$query['size_limit'] = $size_limit;
$results = $this->query($query,$method);
if ($results) {
foreach ($results as $index => $entry) {
$child_dn = $entry['dn'];
array_push($return,$child_dn);
}
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',17,0,__FILE__,__LINE__,__METHOD__,$return);
# Sort the results
asort($return);
return $return;
}
/**
* Explode a DN into an array of its RDN parts.
*
* @param string The DN to explode.
* @param int (optional) Whether to include attribute names (see http://php.net/ldap_explode_dn for details)
*
* @return array An array of RDN parts of this format:
* <code>
* Array
* (
* [0] => uid=ppratt
* [1] => ou=People
* [2] => dc=example
* [3] => dc=com
* )
* </code>
*
* NOTE: When a multivalue RDN is passed to ldap_explode_dn, the results returns with 'value + value';
*/
private function explodeDN($dn,$with_attributes=0) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
static $CACHE;
if (isset($CACHE['explode'][$dn][$with_attributes])) {
if (DEBUG_ENABLED)
debug_log('Return CACHED result (%s) for (%s)',1,0,__FILE__,__LINE__,__METHOD__,
$CACHE['explode'][$dn][$with_attributes],$dn);
return $CACHE['explode'][$dn][$with_attributes];
}
$dn = addcslashes($dn,'<>+";');
# split the dn
$result[0] = ldap_explode_dn($this->escapeDN($dn),0);
$result[1] = ldap_explode_dn($this->escapeDN($dn),1);
if (! $result[$with_attributes]) {
if (DEBUG_ENABLED)
debug_log('Returning NULL - NO result.',1,0,__FILE__,__LINE__,__METHOD__);
return array();
}
# Remove our count value that ldap_explode_dn returns us.
unset($result[0]['count']);
unset($result[1]['count']);
# Record the forward and reverse entries in the cache.
foreach ($result as $key => $value) {
# translate hex code into ascii for display
$result[$key] = $this->unescapeDN($value);
$CACHE['explode'][implode(',',$result[0])][$key] = $result[$key];
$CACHE['explode'][implode(',',array_reverse($result[0]))][$key] = array_reverse($result[$key]);
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',17,0,__FILE__,__LINE__,__METHOD__,$result[$with_attributes]);
return $result[$with_attributes];
}
/**
* Parse a DN and escape any special characters
*/
protected function escapeDN($dn) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
if (! trim($dn))
return $dn;
# Check if the RDN has a comma and escape it.
while (preg_match('/([^\\\\]),(\s*[^=]*\s*),/',$dn))
$dn = preg_replace('/([^\\\\]),(\s*[^=]*\s*),/','$1\\\\2C$2,',$dn);
$dn = preg_replace('/([^\\\\]),(\s*[^=]*\s*)([^,])$/','$1\\\\2C$2$3',$dn);
if (DEBUG_ENABLED)
debug_log('Returning (%s)',17,0,__FILE__,__LINE__,__METHOD__,$dn);
return $dn;
}
/**
* Parse a DN and unescape any special characters
*/
private function unescapeDN($dn) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
if (is_array($dn)) {
$a = array();
foreach ($dn as $key => $rdn) {
$a[$key] = preg_replace_callback('/\\\([0-9A-Fa-f]{2})/', function($m) { return chr(hexdec($m[1])); }, $rdn);
}
return $a;
} else {
return preg_replace_callback('/\\\([0-9A-Fa-f]{2})/', function($m) { return chr(hexdec($m[1])); }, $dn);
}
}
public function getRootDSE($method=null) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$query = array();
$query['base'] = '';
$query['scope'] = 'base';
$query['attrs'] = $this->getValue('server','root_dse_attributes');
$query['baseok'] = true;
$results = $this->query($query,$method);
if (is_array($results) && count($results) == 1)
return array_change_key_case(array_pop($results));
else
return array();
}
/** Schema Methods **/
/**
* This function will query the ldap server and request the subSchemaSubEntry which should be the Schema DN.
*
* If we cant connect to the LDAP server, we'll return false.
* If we can connect but cant get the entry, then we'll return null.
*
* @param string Which connection method resource to use
* @param dn The DN to use to obtain the schema
* @return array|false Schema if available, null if its not or false if we cant connect.
*/
private function getSchemaDN($method=null,$dn='') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',25,0,__FILE__,__LINE__,__METHOD__,$fargs);
# If we already got the SchemaDN, then return it.
if ($this->_schemaDN)
return $this->_schemaDN;
if (! $this->connect($method))
return false;
$search = @ldap_read($this->connect($method),$dn,'objectclass=*',array('subschemaSubentry'),false,0,10,LDAP_DEREF_NEVER);
if (DEBUG_ENABLED)
debug_log('Search returned (%s)',24,0,__FILE__,__LINE__,__METHOD__,!!$search);
# Fix for broken ldap.conf configuration.
if (! $search && ! $dn) {
if (DEBUG_ENABLED)
debug_log('Trying to find the DN for "broken" ldap.conf',80,0,__FILE__,__LINE__,__METHOD__);
if (isset($this->_baseDN)) {
foreach ($this->_baseDN as $base) {
$search = @ldap_read($this->connect($method),$base,'objectclass=*',array('subschemaSubentry'),false,0,10,LDAP_DEREF_NEVER);
if (DEBUG_ENABLED)
debug_log('Search returned (%s) for base (%s)',24,0,__FILE__,__LINE__,__METHOD__,
!!$search,$base);
if ($search)
break;
}
}
}
if (! $search)
return null;
if (! @ldap_count_entries($this->connect($method),$search)) {
if (DEBUG_ENABLED)
debug_log('Search returned 0 entries. Returning NULL',25,0,__FILE__,__LINE__,__METHOD__);
return null;
}
$entries = @ldap_get_entries($this->connect($method),$search);
if (DEBUG_ENABLED)
debug_log('Search returned [%s]',24,0,__FILE__,__LINE__,__METHOD__,$entries);
if (! $entries || ! is_array($entries))
return null;
$entry = isset($entries[0]) ? $entries[0] : false;
if (! $entry) {
if (DEBUG_ENABLED)
debug_log('Entry is false, Returning NULL',80,0,__FILE__,__LINE__,__METHOD__);
return null;
}
$sub_schema_sub_entry = isset($entry[0]) ? $entry[0] : false;
if (! $sub_schema_sub_entry) {
if (DEBUG_ENABLED)
debug_log('Sub Entry is false, Returning NULL',80,0,__FILE__,__LINE__,__METHOD__);
return null;
}
$this->_schemaDN = isset($entry[$sub_schema_sub_entry][0]) ? $entry[$sub_schema_sub_entry][0] : false;
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$this->_schemaDN);
return $this->_schemaDN;
}
/**
* Fetches the raw schema array for the subschemaSubentry of the server. Note,
* this function has grown many hairs to accomodate more LDAP servers. It is
* needfully complicated as it now supports many popular LDAP servers that
* don't necessarily expose their schema "the right way".
*
* Please note: On FC systems, it seems that php_ldap uses /etc/openldap/ldap.conf in
* the search base if it is blank - so edit that file and comment out the BASE line.
*
* @param string Which connection method resource to use
* @param string A string indicating which type of schema to
* fetch. Five valid values: 'objectclasses', 'attributetypes',
* 'ldapsyntaxes', 'matchingruleuse', or 'matchingrules'.
* Case insensitive.
* @param dn (optional) This paremeter is the DN of the entry whose schema you
* would like to fetch. Entries have the option of specifying
* their own subschemaSubentry that points to the DN of the system
* schema entry which applies to this attribute. If unspecified,
* this will try to retrieve the schema from the RootDSE subschemaSubentry.
* Failing that, we use some commonly known schema DNs. Default
* value is the Root DSE DN (zero-length string)
* @return array an array of strings of this form:
* Array (
* [0] => "(1.3.6.1.4.1.7165.1.2.2.4 NAME 'gidPool' DESC 'Pool ...
* [1] => "(1.3.6.1.4.1.7165.2.2.3 NAME 'sambaAccount' DESC 'Sa ...
* etc.
*/
private function getRawSchema($method,$schema_to_fetch,$dn='') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',25,0,__FILE__,__LINE__,__METHOD__,$fargs);
$valid_schema_to_fetch = array('objectclasses','attributetypes','ldapsyntaxes','matchingrules','matchingruleuse');
if (! $this->connect($method) || $this->noconnect)
return false;
# error checking
$schema_to_fetch = strtolower($schema_to_fetch);
if (! is_null($this->_schema_entries) && isset($this->_schema_entries[$schema_to_fetch])) {
$schema = $this->_schema_entries[$schema_to_fetch];
if (DEBUG_ENABLED)
debug_log('Returning CACHED (%s)',25,0,__FILE__,__LINE__,__METHOD__,$schema);
return $schema;
}
# This error message is not localized as only developers should ever see it
if (! in_array($schema_to_fetch,$valid_schema_to_fetch))
error(sprintf('Bad parameter provided to function to %s::getRawSchema(). "%s" is not valid for the schema_to_fetch parameter.',
get_class($this),$schema_to_fetch),'error','index.php');
# Try to get the schema DN from the specified entry.
$schema_dn = $this->getSchemaDN($method,$dn);
# Do we need to try again with the Root DSE?
if (! $schema_dn && trim($dn))
$schema_dn = $this->getSchemaDN($method,'');
# Store the eventual schema retrieval in $schema_search
$schema_search = null;
if ($schema_dn) {
if (DEBUG_ENABLED)
debug_log('Using Schema DN (%s)',24,0,__FILE__,__LINE__,__METHOD__,$schema_dn);
foreach (array('(objectClass=*)','(objectClass=subschema)') as $schema_filter) {
if (DEBUG_ENABLED)
debug_log('Looking for schema with Filter (%s)',24,0,__FILE__,__LINE__,__METHOD__,$schema_filter);
$schema_search = @ldap_read($this->connect($method),$schema_dn,$schema_filter,array($schema_to_fetch),false,0,10,LDAP_DEREF_NEVER);
if (is_null($schema_search))
continue;
$schema_entries = @ldap_get_entries($this->connect($method),$schema_search);
if (DEBUG_ENABLED)
debug_log('Search returned [%s]',24,0,__FILE__,__LINE__,__METHOD__,$schema_entries);
if (is_array($schema_entries) && isset($schema_entries['count']) && $schema_entries['count']) {
if (DEBUG_ENABLED)
debug_log('Found schema with (DN:%s) (FILTER:%s) (ATTR:%s)',24,0,__FILE__,__LINE__,__METHOD__,
$schema_dn,$schema_filter,$schema_to_fetch);
break;
}
if (DEBUG_ENABLED)
debug_log('Didnt find schema with filter (%s)',24,0,__FILE__,__LINE__,__METHOD__,$schema_filter);
unset($schema_entries);
$schema_search = null;
}
}
/* Second chance: If the DN or Root DSE didn't give us the subschemaSubentry, ie $schema_search
* is still null, use some common subSchemaSubentry DNs as a work-around. */
if (is_null($schema_search)) {
if (DEBUG_ENABLED)
debug_log('Attempting work-arounds for "broken" LDAP servers...',24,0,__FILE__,__LINE__,__METHOD__);
foreach ($this->getBaseDN() as $base) {
$ldap['W2K3 AD'][expand_dn_with_base($base,'cn=Aggregate,cn=Schema,cn=configuration,')] = '(objectClass=*)';
$ldap['W2K AD'][expand_dn_with_base($base,'cn=Schema,cn=configuration,')] = '(objectClass=*)';
$ldap['W2K AD'][expand_dn_with_base($base,'cn=Schema,ou=Admin,')] = '(objectClass=*)';
}
# OpenLDAP and Novell
$ldap['OpenLDAP']['cn=subschema'] = '(objectClass=*)';
foreach ($ldap as $ldap_server_name => $ldap_options) {
foreach ($ldap_options as $ldap_dn => $ldap_filter) {
if (DEBUG_ENABLED)
debug_log('Attempting [%s] (%s) (%s)<BR>',24,0,__FILE__,__LINE__,__METHOD__,
$ldap_server_name,$ldap_dn,$ldap_filter);
$schema_search = @ldap_read($this->connect($method),$ldap_dn,$ldap_filter,array($schema_to_fetch),false,0,10,LDAP_DEREF_NEVER);
if (is_null($schema_search))
continue;
$schema_entries = @ldap_get_entries($this->connect($method),$schema_search);
if (DEBUG_ENABLED)
debug_log('Search returned [%s]',24,0,__FILE__,__LINE__,__METHOD__,$schema_entries);
if ($schema_entries && isset($schema_entries[0][$schema_to_fetch])) {
if (DEBUG_ENABLED)
debug_log('Found schema with filter of (%s)',24,0,__FILE__,__LINE__,__METHOD__,$ldap_filter);
break;
}
if (DEBUG_ENABLED)
debug_log('Didnt find schema with filter (%s)',24,0,__FILE__,__LINE__,__METHOD__,$ldap_filter);
unset($schema_entries);
$schema_search = null;
}
if ($schema_search)
break;
}
}
# Option 3: try cn=config
$olc_schema = 'olc'.$schema_to_fetch;
$olc_schema_found = false;
if (is_null($schema_search)) {
if (DEBUG_ENABLED)
debug_log('Attempting cn=config work-around...',24,0,__FILE__,__LINE__,__METHOD__);
$ldap_dn = 'cn=schema,cn=config';
$ldap_filter = '(objectClass=*)';
$schema_search = @ldap_search($this->connect($method),$ldap_dn,$ldap_filter,array($olc_schema),false,0,10,LDAP_DEREF_NEVER);
if (! is_null($schema_search)) {
$schema_entries = @ldap_get_entries($this->connect($method),$schema_search);
if (DEBUG_ENABLED)
debug_log('Search returned [%s]',24,0,__FILE__,__LINE__,__METHOD__,$schema_entries);
if ($schema_entries) {
if (DEBUG_ENABLED)
debug_log('Found schema with filter of (%s) and attribute filter (%s)',24,0,__FILE__,__LINE__,__METHOD__,$ldap_filter,$olc_schema);
$olc_schema_found = true;
} else {
if (DEBUG_ENABLED)
debug_log('Didnt find schema with filter (%s) and attribute filter (%s)',24,0,__FILE__,__LINE__,__METHOD__,$ldap_filter,$olc_schema);
unset($schema_entries);
$schema_search = null;
}
}
}
if (is_null($schema_search)) {
/* Still cant find the schema, try with the RootDSE
* Attempt to pull schema from Root DSE with scope "base", or
* Attempt to pull schema from Root DSE with scope "one" (work-around for Isode M-Vault X.500/LDAP) */
foreach (array('base','one') as $ldap_scope) {
if (DEBUG_ENABLED)
debug_log('Attempting to find schema with scope (%s), filter (objectClass=*) and a blank base.',24,0,__FILE__,__LINE__,__METHOD__,
$ldap_scope);
switch ($ldap_scope) {
case 'base':
$schema_search = @ldap_read($this->connect($method),'','(objectClass=*)',array($schema_to_fetch),false,0,10,LDAP_DEREF_NEVER);
break;
case 'one':
$schema_search = @ldap_list($this->connect($method),'','(objectClass=*)',array($schema_to_fetch),false,0,10,LDAP_DEREF_NEVER);
break;
}
if (is_null($schema_search))
continue;
$schema_entries = @ldap_get_entries($this->connect($method),$schema_search);
if (DEBUG_ENABLED)
debug_log('Search returned [%s]',24,0,__FILE__,__LINE__,__METHOD__,$schema_entries);
if ($schema_entries && isset($schema_entries[0][$schema_to_fetch])) {
if (DEBUG_ENABLED)
debug_log('Found schema with filter of (%s)',24,0,__FILE__,__LINE__,__METHOD__,'(objectClass=*)');
break;
}
if (DEBUG_ENABLED)
debug_log('Didnt find schema with filter (%s)',24,0,__FILE__,__LINE__,__METHOD__,'(objectClass=*)');
unset($schema_entries);
$schema_search = null;
}
}
$schema_error_message = 'Please contact the phpLDAPadmin developers and let them know:<ul><li>Which LDAP server you are running, including which version<li>What OS it is running on<li>Which version of PHP<li>As well as a link to some documentation that describes how to obtain the SCHEMA information</ul><br />We\'ll then add support for your LDAP server in an upcoming release.';
$schema_error_message_array = array('objectclasses','attributetypes');
# Shall we just give up?
if (is_null($schema_search)) {
# We need to have objectclasses and attribues, so display an error, asking the user to get us this information.
if (in_array($schema_to_fetch,$schema_error_message_array))
system_message(array(
'title'=>sprintf('%s (%s)',_('Our attempts to find your SCHEMA have failed'),$schema_to_fetch),
'body'=>sprintf('<b>%s</b>: %s',_('Error'),$schema_error_message),
'type'=>'error'));
else
if (DEBUG_ENABLED)
debug_log('Returning because schema_search is NULL ()',25,0,__FILE__,__LINE__,__METHOD__);
# We'll set this, so if we return here our cache will return the known false.
$this->_schema_entries[$schema_to_fetch] = false;
return false;
}
if (! $schema_entries) {
$return = false;
if (DEBUG_ENABLED)
debug_log('Returning false since ldap_get_entries() returned false.',25,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
if ($olc_schema_found) {
unset ($schema_entries['count']);
foreach ($schema_entries as $entry) {
if (isset($entry[$olc_schema])) {
unset($entry[$olc_schema]['count']);
foreach ($entry[$olc_schema] as $schema_definition)
/* Schema definitions in child nodes prefix the schema entries with "{n}"
the preg_replace call strips out this prefix. */
$schema[] = preg_replace('/^\{\d*\}\(/','(',$schema_definition);
}
}
if (isset($schema)) {
$this->_schema_entries[$olc_schema] = $schema;
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$schema);
return $schema;
} else
return null;
}
if (! isset($schema_entries[0][$schema_to_fetch])) {
if (in_array($schema_to_fetch,$schema_error_message_array)) {
error(sprintf('Our attempts to find your SCHEMA for "%s" have return UNEXPECTED results.<br /><br /><small>(We expected a "%s" in the $schema array but it wasnt there.)</small><br /><br />%s<br /><br />Dump of $schema_search:<hr /><pre><small>%s</small></pre>',
$schema_to_fetch,gettype($schema_search),$schema_error_message,serialize($schema_entries)),'error','index.php');
} else {
$return = false;
if (DEBUG_ENABLED)
debug_log('Returning because (%s) isnt in the schema array. (%s)',25,0,__FILE__,__LINE__,__METHOD__,$schema_to_fetch,$return);
return $return;
}
}
/* Make a nice array of this form:
Array (
[0] => "(1.3.6.1.4.1.7165.1.2.2.4 NAME 'gidPool' DESC 'Pool ...)"
[1] => "(1.3.6.1.4.1.7165.2.2.3 NAME 'sambaAccount' DESC 'Sa ...)"
etc.) */
$schema = $schema_entries[0][$schema_to_fetch];
unset($schema['count']);
$this->_schema_entries[$schema_to_fetch] = $schema;
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$schema);
return $schema;
}
/**
* Gets a single ObjectClass object specified by name.
*
* @param string $oclass_name The name of the objectClass to fetch.
* @param string $dn (optional) It is easier to fetch schema if a DN is provided
* which defines the subschemaSubEntry attribute (all entries should).
*
* @return ObjectClass The specified ObjectClass object or false on error.
*
* @see ObjectClass
* @see SchemaObjectClasses
*/
public function getSchemaObjectClass($oclass_name,$method=null,$dn='') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',25,0,__FILE__,__LINE__,__METHOD__,$fargs);
$oclass_name = strtolower($oclass_name);
$socs = $this->SchemaObjectClasses($method,$dn);
# Default return value
$return = false;
if (isset($socs[$oclass_name]))
$return = $socs[$oclass_name];
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* Gets a single AttributeType object specified by name.
*
* @param string $oclass_name The name of the AttributeType to fetch.
* @param string $dn (optional) It is easier to fetch schema if a DN is provided
* which defines the subschemaSubEntry attribute (all entries should).
*
* @return AttributeType The specified AttributeType object or false on error.
*
* @see AttributeType
* @see SchemaAttributes
*/
public function getSchemaAttribute($attr_name,$method=null,$dn='') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',25,0,__FILE__,__LINE__,__METHOD__,$fargs);
$attr_name = strtolower($attr_name);
$sattrs = $this->SchemaAttributes($method,$dn);
# Default return value
$return = false;
if (isset($sattrs[$attr_name]))
$return = $sattrs[$attr_name];
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* Gets an associative array of ObjectClass objects for the specified
* server. Each array entry's key is the name of the objectClass
* in lower-case and the value is an ObjectClass object.
*
* @param string $dn (optional) It is easier to fetch schema if a DN is provided
* which defines the subschemaSubEntry attribute (all entries should).
*
* @return array An array of ObjectClass objects.
*
* @see ObjectClass
* @see getSchemaObjectClass
*/
public function SchemaObjectClasses($method=null,$dn='') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',25,0,__FILE__,__LINE__,__METHOD__,$fargs);
# Set default return
$return = null;
if ($return = get_cached_item($this->index,'schema','objectclasses')) {
if (DEBUG_ENABLED)
debug_log('Returning CACHED [%s] (%s)',25,0,__FILE__,__LINE__,__METHOD__,$this->index,'objectclasses');
return $return;
}
$raw = $this->getRawSchema($method,'objectclasses',$dn);
if ($raw) {
# Build the array of objectClasses
$return = array();
foreach ($raw as $line) {
if (is_null($line) || ! strlen($line))
continue;
$object_class = new ObjectClass($line,$this);
$return[$object_class->getName()] = $object_class;
}
# Now go through and reference the parent/child relationships
foreach ($return as $oclass)
foreach ($oclass->getSupClasses() as $parent_name)
if (isset($return[strtolower($parent_name)]))
$return[strtolower($parent_name)]->addChildObjectClass($oclass->getName(false));
ksort($return);
# cache the schema to prevent multiple schema fetches from LDAP server
set_cached_item($this->index,$return,'schema','objectclasses');
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* Gets an associative array of AttributeType objects for the specified
* server. Each array entry's key is the name of the attributeType
* in lower-case and the value is an AttributeType object.
*
* @param string $dn (optional) It is easier to fetch schema if a DN is provided
* which defines the subschemaSubEntry attribute (all entries should).
*
* @return array An array of AttributeType objects.
*/
public function SchemaAttributes($method=null,$dn='') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',25,0,__FILE__,__LINE__,__METHOD__,$fargs);
# Set default return
$return = null;
if ($return = get_cached_item($this->index,'schema','attributes')) {
if (DEBUG_ENABLED)
debug_log('(): Returning CACHED [%s] (%s)',25,0,__FILE__,__LINE__,__METHOD__,$this->index,'attributes');
return $return;
}
$raw = $this->getRawSchema($method,'attributeTypes',$dn);
if ($raw) {
# build the array of attribueTypes
$syntaxes = $this->SchemaSyntaxes($method,$dn);
$attrs = array();
/**
* bug 856832: create two arrays - one indexed by name (the standard
* $attrs array above) and one indexed by oid (the new $attrs_oid array
* below). This will help for directory servers, like IBM's, that use OIDs
* in their attribute definitions of SUP, etc
*/
$attrs_oid = array();
foreach ($raw as $line) {
if (is_null($line) || ! strlen($line))
continue;
$attr = new AttributeType($line);
if (isset($syntaxes[$attr->getSyntaxOID()])) {
$syntax = $syntaxes[$attr->getSyntaxOID()];
$attr->setType($syntax->getDescription());
}
$attrs[$attr->getName()] = $attr;
/**
* bug 856832: create an entry in the $attrs_oid array too. This
* will be a ref to the $attrs entry for maintenance and performance
* reasons
*/
$attrs_oid[$attr->getOID()] = &$attrs[$attr->getName()];
}
# go back and add data from aliased attributeTypes
foreach ($attrs as $name => $attr) {
$aliases = $attr->getAliases();
if (is_array($aliases) && count($aliases) > 0) {
/* foreach of the attribute's aliases, create a new entry in the attrs array
* with its name set to the alias name, and all other data copied.*/
foreach ($aliases as $alias_attr_name) {
$new_attr = clone $attr;
$new_attr->setName($alias_attr_name);
$new_attr->addAlias($attr->getName(false));
$new_attr->removeAlias($alias_attr_name);
$new_attr_key = strtolower($alias_attr_name);
$attrs[$new_attr_key] = $new_attr;
}
}
}
# go back and add any inherited descriptions from parent attributes (ie, cn inherits name)
foreach ($attrs as $key => $attr) {
$sup_attr_name = $attr->getSupAttribute();
$sup_attr = null;
if (trim($sup_attr_name)) {
/* This loop really should traverse infinite levels of inheritance (SUP) for attributeTypes,
* but just in case we get carried away, stop at 100. This shouldn't happen, but for
* some weird reason, we have had someone report that it has happened. Oh well.*/
$i = 0;
while ($i++<100 /** 100 == INFINITY ;) */) {
if (isset($attrs_oid[$sup_attr_name])) {
$attr->setSupAttribute($attrs_oid[$sup_attr_name]->getName());
$sup_attr_name = $attr->getSupAttribute();
}
if (! isset($attrs[strtolower($sup_attr_name)])){
error(sprintf('Schema error: attributeType "%s" inherits from "%s", but attributeType "%s" does not exist.',
$attr->getName(),$sup_attr_name,$sup_attr_name),'error','index.php');
return;
}
$sup_attr = $attrs[strtolower($sup_attr_name)];
$sup_attr_name = $sup_attr->getSupAttribute();
# Does this superior attributeType not have a superior attributeType?
if (is_null($sup_attr_name) || strlen(trim($sup_attr_name)) == 0) {
/* Since this attribute's superior attribute does not have another superior
* attribute, clone its properties for this attribute. Then, replace
* those cloned values with those that can be explicitly set by the child
* attribute attr). Save those few properties which the child can set here:*/
$tmp_name = $attr->getName(false);
$tmp_oid = $attr->getOID();
$tmp_sup = $attr->getSupAttribute();
$tmp_aliases = $attr->getAliases();
$tmp_single_val = $attr->getIsSingleValue();
$tmp_desc = $attr->getDescription();
/* clone the SUP attributeType and populate those values
* that were set by the child attributeType */
$attr = clone $sup_attr;
$attr->setOID($tmp_oid);
$attr->setName($tmp_name);
$attr->setSupAttribute($tmp_sup);
$attr->setAliases($tmp_aliases);
$attr->setDescription($tmp_desc);
/* only overwrite the SINGLE-VALUE property if the child explicitly sets it
* (note: All LDAP attributes default to multi-value if not explicitly set SINGLE-VALUE) */
if ($tmp_single_val)
$attr->setIsSingleValue(true);
/* replace this attribute in the attrs array now that we have populated
new values therein */
$attrs[$key] = $attr;
# very important: break out after we are done with this attribute
$sup_attr_name = null;
$sup_attr = null;
break;
}
}
}
}
ksort($attrs);
# Add the used in and required_by values.
$socs = $this->SchemaObjectClasses($method);
if (! is_array($socs))
return array();
foreach ($socs as $object_class) {
$must_attrs = $object_class->getMustAttrNames();
$may_attrs = $object_class->getMayAttrNames();
$oclass_attrs = array_unique(array_merge($must_attrs,$may_attrs));
# Add Used In.
foreach ($oclass_attrs as $attr_name)
if (isset($attrs[strtolower($attr_name)]))
$attrs[strtolower($attr_name)]->addUsedInObjectClass($object_class->getName(false));
# Add Required By.
foreach ($must_attrs as $attr_name)
if (isset($attrs[strtolower($attr_name)]))
$attrs[strtolower($attr_name)]->addRequiredByObjectClass($object_class->getName(false));
# Force May
foreach ($object_class->getForceMayAttrs() as $attr_name)
if (isset($attrs[strtolower($attr_name->name)]))
$attrs[strtolower($attr_name->name)]->setForceMay();
}
$return = $attrs;
# cache the schema to prevent multiple schema fetches from LDAP server
set_cached_item($this->index,$return,'schema','attributes');
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* Returns an array of MatchingRule objects for the specified server.
* The key of each entry is the OID of the matching rule.
*/
public function MatchingRules($method=null,$dn='') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',25,0,__FILE__,__LINE__,__METHOD__,$fargs);
# Set default return
$return = null;
if ($return = get_cached_item($this->index,'schema','matchingrules')) {
if (DEBUG_ENABLED)
debug_log('Returning CACHED [%s] (%s).',25,0,__FILE__,__LINE__,__METHOD__,$this->index,'matchingrules');
return $return;
}
# build the array of MatchingRule objects
$raw = $this->getRawSchema($method,'matchingRules',$dn);
if ($raw) {
$rules = array();
foreach ($raw as $line) {
if (is_null($line) || ! strlen($line))
continue;
$rule = new MatchingRule($line);
$key = $rule->getName();
$rules[$key] = $rule;
}
ksort($rules);
/* For each MatchingRuleUse entry, add the attributes who use it to the
* MatchingRule in the $rules array.*/
$raw = $this->getRawSchema($method,'matchingRuleUse');
if ($raw != false) {
foreach ($raw as $line) {
if (is_null($line) || ! strlen($line))
continue;
$rule_use = new MatchingRuleUse($line);
$key = $rule_use->getName();
if (isset($rules[$key]))
$rules[$key]->setUsedByAttrs($rule_use->getUsedByAttrs());
}
} else {
/* No MatchingRuleUse entry in the subschema, so brute-forcing
* the reverse-map for the "$rule->getUsedByAttrs()" data.*/
$sattrs = $this->SchemaAttributes($method,$dn);
if (is_array($sattrs))
foreach ($sattrs as $attr) {
$rule_key = strtolower($attr->getEquality());
if (isset($rules[$rule_key]))
$rules[$rule_key]->addUsedByAttr($attr->getName(false));
}
}
$return = $rules;
# cache the schema to prevent multiple schema fetches from LDAP server
set_cached_item($this->index,$return,'schema','matchingrules');
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* Returns an array of Syntax objects that this LDAP server uses mapped to
* their descriptions. The key of each entry is the OID of the Syntax.
*/
public function SchemaSyntaxes($method=null,$dn='') {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',25,0,__FILE__,__LINE__,__METHOD__,$fargs);
# Set default return
$return = null;
if ($return = get_cached_item($this->index,'schema','syntaxes')) {
if (DEBUG_ENABLED)
debug_log('Returning CACHED [%s] (%s).',25,0,__FILE__,__LINE__,__METHOD__,$this->index,'syntaxes');
return $return;
}
$raw = $this->getRawSchema($method,'ldapSyntaxes',$dn);
if ($raw) {
# build the array of attributes
$return = array();
foreach ($raw as $line) {
if (is_null($line) || ! strlen($line))
continue;
$syntax = new Syntax($line);
$key = strtolower(trim($syntax->getOID()));
if (! $key)
continue;
$return[$key] = $syntax;
}
ksort($return);
# cache the schema to prevent multiple schema fetches from LDAP server
set_cached_item($this->index,$return,'schema','syntaxes');
}
if (DEBUG_ENABLED)
debug_log('Returning (%s)',25,0,__FILE__,__LINE__,__METHOD__,$return);
return $return;
}
/**
* This function determines if the specified attribute is contained in the force_may list
* as configured in config.php.
*
* @return boolean True if the specified attribute is configured to be force as a may attribute
*/
function isForceMay($attr_name) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
return in_array($attr_name,unserialize(strtolower(serialize($this->getValue('server','force_may')))));
}
/**
* Much like getDNAttrValues(), but only returns the values for
* one attribute of an object. Example calls:
*
* <code>
* print_r(getDNAttrValue('cn=Bob,ou=people,dc=example,dc=com','sn'));
* Array (
* [0] => Smith
* )
*
* print_r(getDNAttrValue('cn=Bob,ou=people,dc=example,dc=com','objectClass'));
* Array (
* [0] => top
* [1] => person
* )
* </code>
*
* @param string The distinguished name (DN) of the entry whose attributes/values to fetch.
* @param string The attribute whose value(s) to return (ie, "objectClass", "cn", "userPassword")
* @param string Which connection method resource to use
* @param constant For aliases and referrals, this parameter specifies whether to
* follow references to the referenced DN or to fetch the attributes for
* the referencing DN. See http://php.net/ldap_search for the 4 valid
* options.
* @return array
* @see getDNAttrValues
* @todo Caching these values may be problematic with multiple calls and different deref values.
*/
public function getDNAttrValue($dn,$attr,$method=null,$deref=LDAP_DEREF_NEVER) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
# Ensure our attr is in lowercase
$attr = strtolower($attr);
$values = $this->getDNAttrValues($dn,$method,$deref);
if (isset($values[$attr]))
return $values[$attr];
else
return array();
}
/**
* Gets the attributes/values of an entry. Returns an associative array whose
* keys are attribute value names and whose values are arrays of values for
* said attribute.
*
* Optionally, callers may specify true for the parameter
* $lower_case_attr_names to force all keys in the associate array (attribute
* names) to be lower case.
*
* Example of its usage:
* <code>
* print_r(getDNAttrValues('cn=Bob,ou=pepole,dc=example,dc=com')
* Array (
* [objectClass] => Array (
* [0] => person
* [1] => top
* )
* [cn] => Array (
* [0] => Bob
* )
* [sn] => Array (
* [0] => Jones
* )
* [dn] => Array (
* [0] => cn=Bob,ou=pepole,dc=example,dc=com
* )
* )
* </code>
*
* @param string The distinguished name (DN) of the entry whose attributes/values to fetch.
* @param string Which connection method resource to use
* @param constant For aliases and referrals, this parameter specifies whether to
* follow references to the referenced DN or to fetch the attributes for
* the referencing DN. See http://php.net/ldap_search for the 4 valid
* options.
* @return array
* @see getDNSysAttrs
* @see getDNAttrValue
*/
public function getDNAttrValues($dn,$method=null,$deref=LDAP_DEREF_NEVER,$attrs=array('*','+'),$nocache=false) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
static $CACHE;
$cacheindex = null;
$method = $this->getMethod($method);
if (in_array('*',$attrs) && in_array('+',$attrs))
$cacheindex = '&';
elseif (in_array('+',$attrs))
$cacheindex = '+';
elseif (in_array('*',$attrs))
$cacheindex = '*';
if (! $nocache && ! is_null($cacheindex) && isset($CACHE[$this->index][$method][$dn][$cacheindex])) {
$results = $CACHE[$this->index][$method][$dn][$cacheindex];
if (DEBUG_ENABLED)
debug_log('Returning (%s)',17,0,__FILE__,__LINE__,__METHOD__,$results);
} else {
$query = array();
$query['base'] = $this->escapeDN($dn);
$query['scope'] = 'base';
$query['deref'] = $deref;
$query['attrs'] = $attrs;
$query['baseok'] = true;
$results = $this->query($query,$method);
if (count($results))
$results = array_pop($results);
$results = array_change_key_case($results);
# Covert all our result key values to an array
foreach ($results as $key => $values)
if (! is_array($results[$key]))
$results[$key] = array($results[$key]);
# Finally sort the results
ksort($results);
if (! is_null($cacheindex) && count($results))
$CACHE[$this->index][$method][$dn][$cacheindex] = $results;
}
return $results;
}
/**
* Returns true if the attribute specified is required to take as input a DN.
* Some examples include 'distinguishedName', 'member' and 'uniqueMember'.
*
* @param string $attr_name The name of the attribute of interest (case insensitive)
* @return boolean
*/
function isDNAttr($attr_name,$method=null) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
# Simple test first
$dn_attrs = array('aliasedObjectName');
foreach ($dn_attrs as $dn_attr)
if (strcasecmp($attr_name,$dn_attr) == 0)
return true;
# Now look at the schema OID
$sattr = $this->getSchemaAttribute($attr_name);
if (! $sattr)
return false;
$syntax_oid = $sattr->getSyntaxOID();
if ('1.3.6.1.4.1.1466.115.121.1.12' == $syntax_oid)
return true;
if ('1.3.6.1.4.1.1466.115.121.1.34' == $syntax_oid)
return true;
$syntaxes = $this->SchemaSyntaxes($method);
if (! isset($syntaxes[$syntax_oid]))
return false;
$syntax_desc = $syntaxes[ $syntax_oid ]->getDescription();
if (strpos(strtolower($syntax_desc),'distinguished name'))
return true;
return false;
}
/**
* Used to determine if the specified attribute is indeed a jpegPhoto. If the
* specified attribute is one that houses jpeg data, true is returned. Otherwise
* this function returns false.
*
* @param string $attr_name The name of the attribute to test.
* @return boolean
* @see draw_jpeg_photo
*/
function isJpegPhoto($attr_name) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
# easy quick check
if (! strcasecmp($attr_name,'jpegPhoto') || ! strcasecmp($attr_name,'photo'))
return true;
# go to the schema and get the Syntax OID
$sattr = $this->getSchemaAttribute($attr_name);
if (! $sattr)
return false;
$oid = $sattr->getSyntaxOID();
$type = $sattr->getType();
if (! strcasecmp($type,'JPEG') || ($oid == '1.3.6.1.4.1.1466.115.121.1.28'))
return true;
return false;
}
/**
* Given an attribute name and server ID number, this function returns
* whether the attrbiute contains boolean data. This is useful for
* developers who wish to display the contents of a boolean attribute
* with a drop-down.
*
* @param string $attr_name The name of the attribute to test.
* @return boolean
*/
function isAttrBoolean($attr_name) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$type = ($sattr = $this->getSchemaAttribute($attr_name)) ? $sattr->getType() : null;
if (! strcasecmp('boolean',$type) ||
! strcasecmp('isCriticalSystemObject',$attr_name) ||
! strcasecmp('showInAdvancedViewOnly',$attr_name))
return true;
else
return false;
}
/**
* Given an attribute name and server ID number, this function returns
* whether the attribute may contain binary data. This is useful for
* developers who wish to display the contents of an arbitrary attribute
* but don't want to dump binary data on the page.
*
* @param string $attr_name The name of the attribute to test.
* @return boolean
*
* @see isJpegPhoto
*/
function isAttrBinary($attr_name) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
/**
* Determining if an attribute is binary can be an expensive operation.
* We cache the results for each attr name on each server in the $attr_cache
* to speed up subsequent calls. The $attr_cache looks like this:
*
* Array
* 0 => Array
* 'objectclass' => false
* 'cn' => false
* 'usercertificate' => true
* 1 => Array
* 'jpegphoto' => true
* 'cn' => false
*/
static $attr_cache;
$attr_name = strtolower($attr_name);
if (isset($attr_cache[$this->index][$attr_name]))
return $attr_cache[$this->index][$attr_name];
if ($attr_name == 'userpassword') {
$attr_cache[$this->index][$attr_name] = false;
return false;
}
# Quick check: If the attr name ends in ";binary", then it's binary.
if (strcasecmp(substr($attr_name,strlen($attr_name) - 7),';binary') == 0) {
$attr_cache[$this->index][$attr_name] = true;
return true;
}
# See what the server schema says about this attribute
$sattr = $this->getSchemaAttribute($attr_name);
if (! is_object($sattr)) {
/* Strangely, some attributeTypes may not show up in the server
* schema. This behavior has been observed in MS Active Directory.*/
$type = null;
$syntax = null;
} else {
$type = $sattr->getType();
$syntax = $sattr->getSyntaxOID();
}
if (strcasecmp($type,'Certificate') == 0 ||
strcasecmp($type,'Binary') == 0 ||
strcasecmp($attr_name,'usercertificate') == 0 ||
strcasecmp($attr_name,'usersmimecertificate') == 0 ||
strcasecmp($attr_name,'networkaddress') == 0 ||
strcasecmp($attr_name,'objectGUID') == 0 ||
strcasecmp($attr_name,'objectSID') == 0 ||
strcasecmp($attr_name,'auditingPolicy') == 0 ||
strcasecmp($attr_name,'jpegPhoto') == 0 ||
strcasecmp($attr_name,'krbExtraData') == 0 ||
strcasecmp($attr_name,'krbPrincipalKey') == 0 ||
$syntax == '1.3.6.1.4.1.1466.115.121.1.10' ||
$syntax == '1.3.6.1.4.1.1466.115.121.1.28' ||
$syntax == '1.3.6.1.4.1.1466.115.121.1.5' ||
$syntax == '1.3.6.1.4.1.1466.115.121.1.8' ||
$syntax == '1.3.6.1.4.1.1466.115.121.1.9'
) {
$attr_cache[$this->index][$attr_name] = true;
return true;
} else {
$attr_cache[$this->index][$attr_name] = false;
return false;
}
}
/**
* This function will test if a user is a member of a group.
*
* Inputs:
* @param string $user membership value that is being checked
* @param dn $group DN to see if user is a member
* @return bool true|false
*/
function userIsMember($user,$group) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$user = strtolower($user);
$group = $this->getDNAttrValues($group);
# If you are using groupOfNames objectClass
if (array_key_exists('member',$group) && ! is_array($group['member']))
$group['member'] = array($group['member']);
if (array_key_exists('member',$group) &&
in_array($user,arrayLower($group['member'])))
return true;
# If you are using groupOfUniqueNames objectClass
if (array_key_exists('uniquemember',$group) && ! is_array($group['uniquemember']))
$group['uniquemember'] = array($group['uniquemember']);
if (array_key_exists('uniquemember',$group) &&
in_array($user,arrayLower($group['uniquemember'])))
return true;
return false;
}
/**
* This function will determine if the user is allowed to login based on a filter
*/
protected function userIsAllowedLogin($dn) {
if (DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS'))
debug_log('Entered (%%)',17,0,__FILE__,__LINE__,__METHOD__,$fargs);
$dn = trim(strtolower($dn));
if (! $this->getValue('login','allowed_dns'))
return true;
foreach ($this->getValue('login','allowed_dns') as $login_allowed_dn) {
if (DEBUG_ENABLED)
debug_log('Working through (%s)',80,0,__FILE__,__LINE__,__METHOD__,$login_allowed_dn);
/* Check if $login_allowed_dn is an ldap search filter
* Is first occurence of 'filter=' (case ensitive) at position 0 ? */
if (preg_match('/^\([&|]\(/',$login_allowed_dn)) {
$query = array();
$query['filter'] = $login_allowed_dn;
$query['attrs'] = array('dn');
foreach($this->getBaseDN() as $base_dn) {
$query['base'] = $base_dn;
$results = $this->query($query,null);
if (DEBUG_ENABLED)
debug_log('Search, Filter [%s], BaseDN [%s] Results [%s]',16,0,__FILE__,__LINE__,__METHOD__,
$query['filter'],$query['base'],$results);
if ($results) {
$dn_array = array();
foreach ($results as $result)
array_push($dn_array,$result['dn']);
$dn_array = array_unique($dn_array);
if (count($dn_array))
foreach ($dn_array as $result_dn) {
if (DEBUG_ENABLED)
debug_log('Comparing with [%s]',80,0,__FILE__,__LINE__,__METHOD__,$result_dn);
# Check if $result_dn is a user DN
if (strcasecmp($dn,trim(strtolower($result_dn))) == 0)
return true;
# Check if $result_dn is a group DN
if ($this->userIsMember($dn,$result_dn))
return true;
}
}
}
}
# Check if $login_allowed_dn is a user DN
if (strcasecmp($dn,trim(strtolower($login_allowed_dn))) == 0)
return true;
# Check if $login_allowed_dn is a group DN
if ($this->userIsMember($dn,$login_allowed_dn))
return true;
}
return false;
}
}
?>
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