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gnu-social/extlib/Net/LDAP2.php

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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
/**
* File containing the Net_LDAP2 interface class.
*
* PHP version 5
*
* @category Net
* @package Net_LDAP2
* @author Tarjej Huse <tarjei@bergfald.no>
* @author Jan Wagner <wagner@netsols.de>
* @author Del <del@babel.com.au>
* @author Benedikt Hallinger <beni@php.net>
* @copyright 2003-2007 Tarjej Huse, Jan Wagner, Del Elson, Benedikt Hallinger
* @license http://www.gnu.org/licenses/lgpl-3.0.txt LGPLv3
* @version SVN: $Id: LDAP2.php 286788 2009-08-04 06:05:49Z beni $
* @link http://pear.php.net/package/Net_LDAP2/
*/
/**
* Package includes.
*/
require_once 'PEAR.php';
require_once 'Net/LDAP2/RootDSE.php';
require_once 'Net/LDAP2/Schema.php';
require_once 'Net/LDAP2/Entry.php';
require_once 'Net/LDAP2/Search.php';
require_once 'Net/LDAP2/Util.php';
require_once 'Net/LDAP2/Filter.php';
require_once 'Net/LDAP2/LDIF.php';
require_once 'Net/LDAP2/SchemaCache.interface.php';
require_once 'Net/LDAP2/SimpleFileSchemaCache.php';
/**
* Error constants for errors that are not LDAP errors.
*/
define('NET_LDAP2_ERROR', 1000);
/**
* Net_LDAP2 Version
*/
define('NET_LDAP2_VERSION', '2.0.7');
/**
* Net_LDAP2 - manipulate LDAP servers the right way!
*
* @category Net
* @package Net_LDAP2
* @author Tarjej Huse <tarjei@bergfald.no>
* @author Jan Wagner <wagner@netsols.de>
* @author Del <del@babel.com.au>
* @author Benedikt Hallinger <beni@php.net>
* @copyright 2003-2007 Tarjej Huse, Jan Wagner, Del Elson, Benedikt Hallinger
* @license http://www.gnu.org/copyleft/lesser.html LGPL
* @link http://pear.php.net/package/Net_LDAP2/
*/
class Net_LDAP2 extends PEAR
{
/**
* Class configuration array
*
* host = the ldap host to connect to
* (may be an array of several hosts to try)
* port = the server port
* version = ldap version (defaults to v 3)
* starttls = when set, ldap_start_tls() is run after connecting.
* bindpw = no explanation needed
* binddn = the DN to bind as.
* basedn = ldap base
* options = hash of ldap options to set (opt => val)
* filter = default search filter
* scope = default search scope
*
* Newly added in 2.0.0RC4, for auto-reconnect:
* auto_reconnect = if set to true then the class will automatically
* attempt to reconnect to the LDAP server in certain
* failure conditionswhen attempting a search, or other
* LDAP operation. Defaults to false. Note that if you
* set this to true, calls to search() may block
* indefinitely if there is a catastrophic server failure.
* min_backoff = minimum reconnection delay period (in seconds).
* current_backoff = initial reconnection delay period (in seconds).
* max_backoff = maximum reconnection delay period (in seconds).
*
* @access protected
* @var array
*/
protected $_config = array('host' => 'localhost',
'port' => 389,
'version' => 3,
'starttls' => false,
'binddn' => '',
'bindpw' => '',
'basedn' => '',
'options' => array(),
'filter' => '(objectClass=*)',
'scope' => 'sub',
'auto_reconnect' => false,
'min_backoff' => 1,
'current_backoff' => 1,
'max_backoff' => 32);
/**
* List of hosts we try to establish a connection to
*
* @access protected
* @var array
*/
protected $_host_list = array();
/**
* List of hosts that are known to be down.
*
* @access protected
* @var array
*/
protected $_down_host_list = array();
/**
* LDAP resource link.
*
* @access protected
* @var resource
*/
protected $_link = false;
/**
* Net_LDAP2_Schema object
*
* This gets set and returned by {@link schema()}
*
* @access protected
* @var object Net_LDAP2_Schema
*/
protected $_schema = null;
/**
* Schema cacher function callback
*
* @see registerSchemaCache()
* @var string
*/
protected $_schema_cache = null;
/**
* Cache for attribute encoding checks
*
* @access protected
* @var array Hash with attribute names as key and boolean value
* to determine whether they should be utf8 encoded or not.
*/
protected $_schemaAttrs = array();
/**
* Cache for rootDSE objects
*
* Hash with requested rootDSE attr names as key and rootDSE object as value
*
* Since the RootDSE object itself may request a rootDSE object,
* {@link rootDse()} caches successful requests.
* Internally, Net_LDAP2 needs several lookups to this object, so
* caching increases performance significally.
*
* @access protected
* @var array
*/
protected $_rootDSE_cache = array();
/**
* Returns the Net_LDAP2 Release version, may be called statically
*
* @static
* @return string Net_LDAP2 version
*/
public static function getVersion()
{
return NET_LDAP2_VERSION;
}
/**
* Configure Net_LDAP2, connect and bind
*
* Use this method as starting point of using Net_LDAP2
* to establish a connection to your LDAP server.
*
* Static function that returns either an error object or the new Net_LDAP2
* object. Something like a factory. Takes a config array with the needed
* parameters.
*
* @param array $config Configuration array
*
* @access public
* @return Net_LDAP2_Error|Net_LDAP2 Net_LDAP2_Error or Net_LDAP2 object
*/
public static function &connect($config = array())
{
$ldap_check = self::checkLDAPExtension();
if (self::iserror($ldap_check)) {
return $ldap_check;
}
@$obj = new Net_LDAP2($config);
// todo? better errorhandling for setConfig()?
// connect and bind with credentials in config
$err = $obj->bind();
if (self::isError($err)) {
return $err;
}
return $obj;
}
/**
* Net_LDAP2 constructor
*
* Sets the config array
*
* Please note that the usual way of getting Net_LDAP2 to work is
* to call something like:
* <code>$ldap = Net_LDAP2::connect($ldap_config);</code>
*
* @param array $config Configuration array
*
* @access protected
* @return void
* @see $_config
*/
public function __construct($config = array())
{
$this->PEAR('Net_LDAP2_Error');
$this->setConfig($config);
}
/**
* Sets the internal configuration array
*
* @param array $config Configuration array
*
* @access protected
* @return void
*/
protected function setConfig($config)
{
//
// Parameter check -- probably should raise an error here if config
// is not an array.
//
if (! is_array($config)) {
return;
}
foreach ($config as $k => $v) {
if (isset($this->_config[$k])) {
$this->_config[$k] = $v;
} else {
// map old (Net_LDAP2) parms to new ones
switch($k) {
case "dn":
$this->_config["binddn"] = $v;
break;
case "password":
$this->_config["bindpw"] = $v;
break;
case "tls":
$this->_config["starttls"] = $v;
break;
case "base":
$this->_config["basedn"] = $v;
break;
}
}
}
//
// Ensure the host list is an array.
//
if (is_array($this->_config['host'])) {
$this->_host_list = $this->_config['host'];
} else {
if (strlen($this->_config['host']) > 0) {
$this->_host_list = array($this->_config['host']);
} else {
$this->_host_list = array();
// ^ this will cause an error in performConnect(),
// so the user is notified about the failure
}
}
//
// Reset the down host list, which seems like a sensible thing to do
// if the config is being reset for some reason.
//
$this->_down_host_list = array();
}
/**
* Bind or rebind to the ldap-server
*
* This function binds with the given dn and password to the server. In case
* no connection has been made yet, it will be started and startTLS issued
* if appropiate.
*
* The internal bind configuration is not being updated, so if you call
* bind() without parameters, you can rebind with the credentials
* provided at first connecting to the server.
*
* @param string $dn Distinguished name for binding
* @param string $password Password for binding
*
* @access public
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
*/
public function bind($dn = null, $password = null)
{
// fetch current bind credentials
if (is_null($dn)) {
$dn = $this->_config["binddn"];
}
if (is_null($password)) {
$password = $this->_config["bindpw"];
}
// Connect first, if we haven't so far.
// This will also bind us to the server.
if ($this->_link === false) {
// store old credentials so we can revert them later
// then overwrite config with new bind credentials
$olddn = $this->_config["binddn"];
$oldpw = $this->_config["bindpw"];
// overwrite bind credentials in config
// so performConnect() knows about them
$this->_config["binddn"] = $dn;
$this->_config["bindpw"] = $password;
// try to connect with provided credentials
$msg = $this->performConnect();
// reset to previous config
$this->_config["binddn"] = $olddn;
$this->_config["bindpw"] = $oldpw;
// see if bind worked
if (self::isError($msg)) {
return $msg;
}
} else {
// do the requested bind as we are
// asked to bind manually
if (is_null($dn)) {
// anonymous bind
$msg = @ldap_bind($this->_link);
} else {
// privileged bind
$msg = @ldap_bind($this->_link, $dn, $password);
}
if (false === $msg) {
return PEAR::raiseError("Bind failed: " .
@ldap_error($this->_link),
@ldap_errno($this->_link));
}
}
return true;
}
/**
* Connect to the ldap-server
*
* This function connects to the LDAP server specified in
* the configuration, binds and set up the LDAP protocol as needed.
*
* @access protected
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
*/
protected function performConnect()
{
// Note: Connecting is briefly described in RFC1777.
// Basicly it works like this:
// 1. set up TCP connection
// 2. secure that connection if neccessary
// 3a. setLDAPVersion to tell server which version we want to speak
// 3b. perform bind
// 3c. setLDAPVersion to tell server which version we want to speak
// together with a test for supported versions
// 4. set additional protocol options
// Return true if we are already connected.
if ($this->_link !== false) {
return true;
}
// Connnect to the LDAP server if we are not connected. Note that
// with some LDAP clients, ldapperformConnect returns a link value even
// if no connection is made. We need to do at least one anonymous
// bind to ensure that a connection is actually valid.
//
// Ref: http://www.php.net/manual/en/function.ldap-connect.php
// Default error message in case all connection attempts
// fail but no message is set
$current_error = new PEAR_Error('Unknown connection error');
// Catch empty $_host_list arrays.
if (!is_array($this->_host_list) || count($this->_host_list) == 0) {
$current_error = PEAR::raiseError('No Servers configured! Please '.
'pass in an array of servers to Net_LDAP2');
return $current_error;
}
// Cycle through the host list.
foreach ($this->_host_list as $host) {
// Ensure we have a valid string for host name
if (is_array($host)) {
$current_error = PEAR::raiseError('No Servers configured! '.
'Please pass in an one dimensional array of servers to '.
'Net_LDAP2! (multidimensional array detected!)');
continue;
}
// Skip this host if it is known to be down.
if (in_array($host, $this->_down_host_list)) {
continue;
}
// Record the host that we are actually connecting to in case
// we need it later.
$this->_config['host'] = $host;
// Attempt a connection.
$this->_link = @ldap_connect($host, $this->_config['port']);
if (false === $this->_link) {
$current_error = PEAR::raiseError('Could not connect to ' .
$host . ':' . $this->_config['port']);
$this->_down_host_list[] = $host;
continue;
}
// If we're supposed to use TLS, do so before we try to bind,
// as some strict servers only allow binding via secure connections
if ($this->_config["starttls"] === true) {
if (self::isError($msg = $this->startTLS())) {
$current_error = $msg;
$this->_link = false;
$this->_down_host_list[] = $host;
continue;
}
}
// Try to set the configured LDAP version on the connection if LDAP
// server needs that before binding (eg OpenLDAP).
// This could be necessary since rfc-1777 states that the protocol version
// has to be set at the bind request.
// We use force here which means that the test in the rootDSE is skipped;
// this is neccessary, because some strict LDAP servers only allow to
// read the LDAP rootDSE (which tells us the supported protocol versions)
// with authenticated clients.
// This may fail in which case we try again after binding.
// In this case, most probably the bind() or setLDAPVersion()-call
// below will also fail, providing error messages.
$version_set = false;
$ignored_err = $this->setLDAPVersion(0, true);
if (!self::isError($ignored_err)) {
$version_set = true;
}
// Attempt to bind to the server. If we have credentials configured,
// we try to use them, otherwise its an anonymous bind.
// As stated by RFC-1777, the bind request should be the first
// operation to be performed after the connection is established.
// This may give an protocol error if the server does not support
// V2 binds and the above call to setLDAPVersion() failed.
// In case the above call failed, we try an V2 bind here and set the
// version afterwards (with checking to the rootDSE).
$msg = $this->bind();
if (self::isError($msg)) {
// The bind failed, discard link and save error msg.
// Then record the host as down and try next one
if ($msg->getCode() == 0x02 && !$version_set) {
// provide a finer grained error message
// if protocol error arieses because of invalid version
$msg = new Net_LDAP2_Error($msg->getMessage().
" (could not set LDAP protocol version to ".
$this->_config['version'].")",
$msg->getCode());
}
$this->_link = false;
$current_error = $msg;
$this->_down_host_list[] = $host;
continue;
}
// Set desired LDAP version if not successfully set before.
// Here, a check against the rootDSE is performed, so we get a
// error message if the server does not support the version.
// The rootDSE entry should tell us which LDAP versions are
// supported. However, some strict LDAP servers only allow
// bound suers to read the rootDSE.
if (!$version_set) {
if (self::isError($msg = $this->setLDAPVersion())) {
$current_error = $msg;
$this->_link = false;
$this->_down_host_list[] = $host;
continue;
}
}
// Set LDAP parameters, now we know we have a valid connection.
if (isset($this->_config['options']) &&
is_array($this->_config['options']) &&
count($this->_config['options'])) {
foreach ($this->_config['options'] as $opt => $val) {
$err = $this->setOption($opt, $val);
if (self::isError($err)) {
$current_error = $err;
$this->_link = false;
$this->_down_host_list[] = $host;
continue 2;
}
}
}
// At this stage we have connected, bound, and set up options,
// so we have a known good LDAP server. Time to go home.
return true;
}
// All connection attempts have failed, return the last error.
return $current_error;
}
/**
* Reconnect to the ldap-server.
*
* In case the connection to the LDAP
* service has dropped out for some reason, this function will reconnect,
* and re-bind if a bind has been attempted in the past. It is probably
* most useful when the server list provided to the new() or connect()
* function is an array rather than a single host name, because in that
* case it will be able to connect to a failover or secondary server in
* case the primary server goes down.
*
* This doesn't return anything, it just tries to re-establish
* the current connection. It will sleep for the current backoff
* period (seconds) before attempting the connect, and if the
* connection fails it will double the backoff period, but not
* try again. If you want to ensure a reconnection during a
* transient period of server downtime then you need to call this
* function in a loop.
*
* @access protected
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
*/
protected function performReconnect()
{
// Return true if we are already connected.
if ($this->_link !== false) {
return true;
}
// Default error message in case all connection attempts
// fail but no message is set
$current_error = new PEAR_Error('Unknown connection error');
// Sleep for a backoff period in seconds.
sleep($this->_config['current_backoff']);
// Retry all available connections.
$this->_down_host_list = array();
$msg = $this->performConnect();
// Bail out if that fails.
if (self::isError($msg)) {
$this->_config['current_backoff'] =
$this->_config['current_backoff'] * 2;
if ($this->_config['current_backoff'] > $this->_config['max_backoff']) {
$this->_config['current_backoff'] = $this->_config['max_backoff'];
}
return $msg;
}
// Now we should be able to safely (re-)bind.
$msg = $this->bind();
if (self::isError($msg)) {
$this->_config['current_backoff'] = $this->_config['current_backoff'] * 2;
if ($this->_config['current_backoff'] > $this->_config['max_backoff']) {
$this->_config['current_backoff'] = $this->_config['max_backoff'];
}
// _config['host'] should have had the last connected host stored in it
// by performConnect(). Since we are unable to bind to that host we can safely
// assume that it is down or has some other problem.
$this->_down_host_list[] = $this->_config['host'];
return $msg;
}
// At this stage we have connected, bound, and set up options,
// so we have a known good LDAP server. Time to go home.
$this->_config['current_backoff'] = $this->_config['min_backoff'];
return true;
}
/**
* Starts an encrypted session
*
* @access public
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
*/
public function startTLS()
{
// Test to see if the server supports TLS first.
// This is done via testing the extensions offered by the server.
// The OID 1.3.6.1.4.1.1466.20037 tells us, if TLS is supported.
$rootDSE = $this->rootDse();
if (self::isError($rootDSE)) {
return $this->raiseError("Unable to fetch rootDSE entry ".
"to see if TLS is supoported: ".$rootDSE->getMessage(), $rootDSE->getCode());
}
$supported_extensions = $rootDSE->getValue('supportedExtension');
if (self::isError($supported_extensions)) {
return $this->raiseError("Unable to fetch rootDSE attribute 'supportedExtension' ".
"to see if TLS is supoported: ".$supported_extensions->getMessage(), $supported_extensions->getCode());
}
if (in_array('1.3.6.1.4.1.1466.20037', $supported_extensions)) {
if (false === @ldap_start_tls($this->_link)) {
return $this->raiseError("TLS not started: " .
@ldap_error($this->_link),
@ldap_errno($this->_link));
}
return true;
} else {
return $this->raiseError("Server reports that it does not support TLS");
}
}
/**
* alias function of startTLS() for perl-ldap interface
*
* @return void
* @see startTLS()
*/
public function start_tls()
{
$args = func_get_args();
return call_user_func_array(array( &$this, 'startTLS' ), $args);
}
/**
* Close LDAP connection.
*
* Closes the connection. Use this when the session is over.
*
* @return void
*/
public function done()
{
$this->_Net_LDAP2();
}
/**
* Alias for {@link done()}
*
* @return void
* @see done()
*/
public function disconnect()
{
$this->done();
}
/**
* Destructor
*
* @access protected
*/
public function _Net_LDAP2()
{
@ldap_close($this->_link);
}
/**
* Add a new entryobject to a directory.
*
* Use add to add a new Net_LDAP2_Entry object to the directory.
* This also links the entry to the connection used for the add,
* if it was a fresh entry ({@link Net_LDAP2_Entry::createFresh()})
*
* @param Net_LDAP2_Entry &$entry Net_LDAP2_Entry
*
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
*/
public function add(&$entry)
{
if (!$entry instanceof Net_LDAP2_Entry) {
return PEAR::raiseError('Parameter to Net_LDAP2::add() must be a Net_LDAP2_Entry object.');
}
// Continue attempting the add operation in a loop until we
// get a success, a definitive failure, or the world ends.
$foo = 0;
while (true) {
$link = $this->getLink();
if ($link === false) {
// We do not have a successful connection yet. The call to
// getLink() would have kept trying if we wanted one. Go
// home now.
return PEAR::raiseError("Could not add entry " . $entry->dn() .
" no valid LDAP connection could be found.");
}
if (@ldap_add($link, $entry->dn(), $entry->getValues())) {
// entry successfully added, we should update its $ldap reference
// in case it is not set so far (fresh entry)
if (!$entry->getLDAP() instanceof Net_LDAP2) {
$entry->setLDAP($this);
}
// store, that the entry is present inside the directory
$entry->markAsNew(false);
return true;
} else {
// We have a failure. What type? We may be able to reconnect
// and try again.
$error_code = @ldap_errno($link);
$error_name = $this->errorMessage($error_code);
if (($error_name === 'LDAP_OPERATIONS_ERROR') &&
($this->_config['auto_reconnect'])) {
// The server has become disconnected before trying the
// operation. We should try again, possibly with a different
// server.
$this->_link = false;
$this->performReconnect();
} else {
// Errors other than the above catched are just passed
// back to the user so he may react upon them.
return PEAR::raiseError("Could not add entry " . $entry->dn() . " " .
$error_name,
$error_code);
}
}
}
}
/**
* Delete an entry from the directory
*
* The object may either be a string representing the dn or a Net_LDAP2_Entry
* object. When the boolean paramter recursive is set, all subentries of the
* entry will be deleted as well.
*
* @param string|Net_LDAP2_Entry $dn DN-string or Net_LDAP2_Entry
* @param boolean $recursive Should we delete all children recursive as well?
*
* @access public
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
*/
public function delete($dn, $recursive = false)
{
if ($dn instanceof Net_LDAP2_Entry) {
$dn = $dn->dn();
}
if (false === is_string($dn)) {
return PEAR::raiseError("Parameter is not a string nor an entry object!");
}
// Recursive delete searches for children and calls delete for them
if ($recursive) {
$result = @ldap_list($this->_link, $dn, '(objectClass=*)', array(null), 0, 0);
if (@ldap_count_entries($this->_link, $result)) {
$subentry = @ldap_first_entry($this->_link, $result);
$this->delete(@ldap_get_dn($this->_link, $subentry), true);
while ($subentry = @ldap_next_entry($this->_link, $subentry)) {
$this->delete(@ldap_get_dn($this->_link, $subentry), true);
}
}
}
// Continue attempting the delete operation in a loop until we
// get a success, a definitive failure, or the world ends.
while (true) {
$link = $this->getLink();
if ($link === false) {
// We do not have a successful connection yet. The call to
// getLink() would have kept trying if we wanted one. Go
// home now.
return PEAR::raiseError("Could not add entry " . $dn .
" no valid LDAP connection could be found.");
}
if (@ldap_delete($link, $dn)) {
// entry successfully deleted.
return true;
} else {
// We have a failure. What type?
// We may be able to reconnect and try again.
$error_code = @ldap_errno($link);
$error_name = $this->errorMessage($error_code);
if (($this->errorMessage($error_code) === 'LDAP_OPERATIONS_ERROR') &&
($this->_config['auto_reconnect'])) {
// The server has become disconnected before trying the
// operation. We should try again, possibly with a
// different server.
$this->_link = false;
$this->performReconnect();
} elseif ($error_code == 66) {
// Subentries present, server refused to delete.
// Deleting subentries is the clients responsibility, but
// since the user may not know of the subentries, we do not
// force that here but instead notify the developer so he
// may take actions himself.
return PEAR::raiseError("Could not delete entry $dn because of subentries. Use the recursive parameter to delete them.");
} else {
// Errors other than the above catched are just passed
// back to the user so he may react upon them.
return PEAR::raiseError("Could not delete entry " . $dn . " " .
$error_name,
$error_code);
}
}
}
}
/**
* Modify an ldapentry directly on the server
*
* This one takes the DN or a Net_LDAP2_Entry object and an array of actions.
* This array should be something like this:
*
* array('add' => array('attribute1' => array('val1', 'val2'),
* 'attribute2' => array('val1')),
* 'delete' => array('attribute1'),
* 'replace' => array('attribute1' => array('val1')),
* 'changes' => array('add' => ...,
* 'replace' => ...,
* 'delete' => array('attribute1', 'attribute2' => array('val1')))
*
* The changes array is there so the order of operations can be influenced
* (the operations are done in order of appearance).
* The order of execution is as following:
* 1. adds from 'add' array
* 2. deletes from 'delete' array
* 3. replaces from 'replace' array
* 4. changes (add, replace, delete) in order of appearance
* All subarrays (add, replace, delete, changes) may be given at the same time.
*
* The function calls the corresponding functions of an Net_LDAP2_Entry
* object. A detailed description of array structures can be found there.
*
* Unlike the modification methods provided by the Net_LDAP2_Entry object,
* this method will instantly carry out an update() after each operation,
* thus modifying "directly" on the server.
*
* @param string|Net_LDAP2_Entry $entry DN-string or Net_LDAP2_Entry
* @param array $parms Array of changes
*
* @access public
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
*/
public function modify($entry, $parms = array())
{
if (is_string($entry)) {
$entry = $this->getEntry($entry);
if (self::isError($entry)) {
return $entry;
}
}
if (!$entry instanceof Net_LDAP2_Entry) {
return PEAR::raiseError("Parameter is not a string nor an entry object!");
}
// Perform changes mentioned separately
foreach (array('add', 'delete', 'replace') as $action) {
if (isset($parms[$action])) {
$msg = $entry->$action($parms[$action]);
if (self::isError($msg)) {
return $msg;
}
$entry->setLDAP($this);
// Because the @ldap functions are called inside Net_LDAP2_Entry::update(),
// we have to trap the error codes issued from that if we want to support
// reconnection.
while (true) {
$msg = $entry->update();
if (self::isError($msg)) {
// We have a failure. What type? We may be able to reconnect
// and try again.
$error_code = $msg->getCode();
$error_name = $this->errorMessage($error_code);
if (($this->errorMessage($error_code) === 'LDAP_OPERATIONS_ERROR') &&
($this->_config['auto_reconnect'])) {
// The server has become disconnected before trying the
// operation. We should try again, possibly with a different
// server.
$this->_link = false;
$this->performReconnect();
} else {
// Errors other than the above catched are just passed
// back to the user so he may react upon them.
return PEAR::raiseError("Could not modify entry: ".$msg->getMessage());
}
} else {
// modification succeedet, evaluate next change
break;
}
}
}
}
// perform combined changes in 'changes' array
if (isset($parms['changes']) && is_array($parms['changes'])) {
foreach ($parms['changes'] as $action => $value) {
// Because the @ldap functions are called inside Net_LDAP2_Entry::update,
// we have to trap the error codes issued from that if we want to support
// reconnection.
while (true) {
$msg = $this->modify($entry, array($action => $value));
if (self::isError($msg)) {
// We have a failure. What type? We may be able to reconnect
// and try again.
$error_code = $msg->getCode();
$error_name = $this->errorMessage($error_code);
if (($this->errorMessage($error_code) === 'LDAP_OPERATIONS_ERROR') &&
($this->_config['auto_reconnect'])) {
// The server has become disconnected before trying the
// operation. We should try again, possibly with a different
// server.
$this->_link = false;
$this->performReconnect();
} else {
// Errors other than the above catched are just passed
// back to the user so he may react upon them.
return $msg;
}
} else {
// modification succeedet, evaluate next change
break;
}
}
}
}
return true;
}
/**
* Run a ldap search query
*
* Search is used to query the ldap-database.
* $base and $filter may be ommitted. The one from config will
* then be used. $base is either a DN-string or an Net_LDAP2_Entry
* object in which case its DN willb e used.
*
* Params may contain:
*
* scope: The scope which will be used for searching
* base - Just one entry
* sub - The whole tree
* one - Immediately below $base
* sizelimit: Limit the number of entries returned (default: 0 = unlimited),
* timelimit: Limit the time spent for searching (default: 0 = unlimited),
* attrsonly: If true, the search will only return the attribute names,
* attributes: Array of attribute names, which the entry should contain.
* It is good practice to limit this to just the ones you need.
* [NOT IMPLEMENTED]
* deref: By default aliases are dereferenced to locate the base object for the search, but not when
* searching subordinates of the base object. This may be changed by specifying one of the
* following values:
*
* never - Do not dereference aliases in searching or in locating the base object of the search.
* search - Dereference aliases in subordinates of the base object in searching, but not in
* locating the base object of the search.
* find
* always
*
* Please note, that you cannot override server side limitations to sizelimit
* and timelimit: You can always only lower a given limit.
*
* @param string|Net_LDAP2_Entry $base LDAP searchbase
* @param string|Net_LDAP2_Filter $filter LDAP search filter or a Net_LDAP2_Filter object
* @param array $params Array of options
*
* @access public
* @return Net_LDAP2_Search|Net_LDAP2_Error Net_LDAP2_Search object or Net_LDAP2_Error object
* @todo implement search controls (sorting etc)
*/
public function search($base = null, $filter = null, $params = array())
{
if (is_null($base)) {
$base = $this->_config['basedn'];
}
if ($base instanceof Net_LDAP2_Entry) {
$base = $base->dn(); // fetch DN of entry, making searchbase relative to the entry
}
if (is_null($filter)) {
$filter = $this->_config['filter'];
}
if ($filter instanceof Net_LDAP2_Filter) {
$filter = $filter->asString(); // convert Net_LDAP2_Filter to string representation
}
if (PEAR::isError($filter)) {
return $filter;
}
if (PEAR::isError($base)) {
return $base;
}
/* setting searchparameters */
(isset($params['sizelimit'])) ? $sizelimit = $params['sizelimit'] : $sizelimit = 0;
(isset($params['timelimit'])) ? $timelimit = $params['timelimit'] : $timelimit = 0;
(isset($params['attrsonly'])) ? $attrsonly = $params['attrsonly'] : $attrsonly = 0;
(isset($params['attributes'])) ? $attributes = $params['attributes'] : $attributes = array();
// Ensure $attributes to be an array in case only one
// attribute name was given as string
if (!is_array($attributes)) {
$attributes = array($attributes);
}
// reorganize the $attributes array index keys
// sometimes there are problems with not consecutive indexes
$attributes = array_values($attributes);
// scoping makes searches faster!
$scope = (isset($params['scope']) ? $params['scope'] : $this->_config['scope']);
switch ($scope) {
case 'one':
$search_function = 'ldap_list';
break;
case 'base':
$search_function = 'ldap_read';
break;
default:
$search_function = 'ldap_search';
}
// Continue attempting the search operation until we get a success
// or a definitive failure.
while (true) {
$link = $this->getLink();
$search = @call_user_func($search_function,
$link,
$base,
$filter,
$attributes,
$attrsonly,
$sizelimit,
$timelimit);
if ($err = @ldap_errno($link)) {
if ($err == 32) {
// Errorcode 32 = no such object, i.e. a nullresult.
return $obj = new Net_LDAP2_Search ($search, $this, $attributes);
} elseif ($err == 4) {
// Errorcode 4 = sizelimit exeeded.
return $obj = new Net_LDAP2_Search ($search, $this, $attributes);
} elseif ($err == 87) {
// bad search filter
return $this->raiseError($this->errorMessage($err) . "($filter)", $err);
} elseif (($err == 1) && ($this->_config['auto_reconnect'])) {
// Errorcode 1 = LDAP_OPERATIONS_ERROR but we can try a reconnect.
$this->_link = false;
$this->performReconnect();
} else {
$msg = "\nParameters:\nBase: $base\nFilter: $filter\nScope: $scope";
return $this->raiseError($this->errorMessage($err) . $msg, $err);
}
} else {
return $obj = new Net_LDAP2_Search($search, $this, $attributes);
}
}
}
/**
* Set an LDAP option
*
* @param string $option Option to set
* @param mixed $value Value to set Option to
*
* @access public
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
*/
public function setOption($option, $value)
{
if ($this->_link) {
if (defined($option)) {
if (@ldap_set_option($this->_link, constant($option), $value)) {
return true;
} else {
$err = @ldap_errno($this->_link);
if ($err) {
$msg = @ldap_err2str($err);
} else {
$err = NET_LDAP2_ERROR;
$msg = $this->errorMessage($err);
}
return $this->raiseError($msg, $err);
}
} else {
return $this->raiseError("Unkown Option requested");
}
} else {
return $this->raiseError("Could not set LDAP option: No LDAP connection");
}
}
/**
* Get an LDAP option value
*
* @param string $option Option to get
*
* @access public
* @return Net_LDAP2_Error|string Net_LDAP2_Error or option value
*/
public function getOption($option)
{
if ($this->_link) {
if (defined($option)) {
if (@ldap_get_option($this->_link, constant($option), $value)) {
return $value;
} else {
$err = @ldap_errno($this->_link);
if ($err) {
$msg = @ldap_err2str($err);
} else {
$err = NET_LDAP2_ERROR;
$msg = $this->errorMessage($err);
}
return $this->raiseError($msg, $err);
}
} else {
$this->raiseError("Unkown Option requested");
}
} else {
$this->raiseError("No LDAP connection");
}
}
/**
* Get the LDAP_PROTOCOL_VERSION that is used on the connection.
*
* A lot of ldap functionality is defined by what protocol version the ldap server speaks.
* This might be 2 or 3.
*
* @return int
*/
public function getLDAPVersion()
{
if ($this->_link) {
$version = $this->getOption("LDAP_OPT_PROTOCOL_VERSION");
} else {
$version = $this->_config['version'];
}
return $version;
}
/**
* Set the LDAP_PROTOCOL_VERSION that is used on the connection.
*
* @param int $version LDAP-version that should be used
* @param boolean $force If set to true, the check against the rootDSE will be skipped
*
* @return Net_LDAP2_Error|true Net_LDAP2_Error object or true
* @todo Checking via the rootDSE takes much time - why? fetching and instanciation is quick!
*/
public function setLDAPVersion($version = 0, $force = false)
{
if (!$version) {
$version = $this->_config['version'];
}
//
// Check to see if the server supports this version first.
//
// Todo: Why is this so horribly slow?
// $this->rootDse() is very fast, as well as Net_LDAP2_RootDSE::fetch()
// seems like a problem at copiyng the object inside PHP??
// Additionally, this is not always reproducable...
//
if (!$force) {
$rootDSE = $this->rootDse();
if ($rootDSE instanceof Net_LDAP2_Error) {
return $rootDSE;
} else {
$supported_versions = $rootDSE->getValue('supportedLDAPVersion');
if (is_string($supported_versions)) {
$supported_versions = array($supported_versions);
}
$check_ok = in_array($version, $supported_versions);
}
}
if ($force || $check_ok) {
return $this->setOption("LDAP_OPT_PROTOCOL_VERSION", $version);
} else {
return $this->raiseError("LDAP Server does not support protocol version " . $version);
}
}
/**
* Tells if a DN does exist in the directory
*
* @param string|Net_LDAP2_Entry $dn The DN of the object to test
*
* @return boolean|Net_LDAP2_Error
*/
public function dnExists($dn)
{
if (PEAR::isError($dn)) {
return $dn;
}
if ($dn instanceof Net_LDAP2_Entry) {
$dn = $dn->dn();
}
if (false === is_string($dn)) {
return PEAR::raiseError('Parameter $dn is not a string nor an entry object!');
}
// make dn relative to parent
$base = Net_LDAP2_Util::ldap_explode_dn($dn, array('casefold' => 'none', 'reverse' => false, 'onlyvalues' => false));
if (self::isError($base)) {
return $base;
}
$entry_rdn = array_shift($base);
if (is_array($entry_rdn)) {
// maybe the dn consist of a multivalued RDN, we must build the dn in this case
// because the $entry_rdn is an array!
$filter_dn = Net_LDAP2_Util::canonical_dn($entry_rdn);
}
$base = Net_LDAP2_Util::canonical_dn($base);
$result = @ldap_list($this->_link, $base, $entry_rdn, array(), 1, 1);
if (@ldap_count_entries($this->_link, $result)) {
return true;
}
if (ldap_errno($this->_link) == 32) {
return false;
}
if (ldap_errno($this->_link) != 0) {
return PEAR::raiseError(ldap_error($this->_link), ldap_errno($this->_link));
}
return false;
}
/**
* Get a specific entry based on the DN
*
* @param string $dn DN of the entry that should be fetched
* @param array $attr Array of Attributes to select. If ommitted, all attributes are fetched.
*
* @return Net_LDAP2_Entry|Net_LDAP2_Error Reference to a Net_LDAP2_Entry object or Net_LDAP2_Error object
* @todo Maybe check against the shema should be done to be sure the attribute type exists
*/
public function &getEntry($dn, $attr = array())
{
if (!is_array($attr)) {
$attr = array($attr);
}
$result = $this->search($dn, '(objectClass=*)',
array('scope' => 'base', 'attributes' => $attr));
if (self::isError($result)) {
return $result;
} elseif ($result->count() == 0) {
return PEAR::raiseError('Could not fetch entry '.$dn.': no entry found');
}
$entry = $result->shiftEntry();
if (false == $entry) {
return PEAR::raiseError('Could not fetch entry (error retrieving entry from search result)');
}
return $entry;
}
/**
* Rename or move an entry
*
* This method will instantly carry out an update() after the move,
* so the entry is moved instantly.
* You can pass an optional Net_LDAP2 object. In this case, a cross directory
* move will be performed which deletes the entry in the source (THIS) directory
* and adds it in the directory $target_ldap.
* A cross directory move will switch the Entrys internal LDAP reference so
* updates to the entry will go to the new directory.
*
* Note that if you want to do a cross directory move, you need to
* pass an Net_LDAP2_Entry object, otherwise the attributes will be empty.
*
* @param string|Net_LDAP2_Entry $entry Entry DN or Entry object
* @param string $newdn New location
* @param Net_LDAP2 $target_ldap (optional) Target directory for cross server move; should be passed via reference
*
* @return Net_LDAP2_Error|true
*/
public function move($entry, $newdn, $target_ldap = null)
{
if (is_string($entry)) {
$entry_o = $this->getEntry($entry);
} else {
$entry_o =& $entry;
}
if (!$entry_o instanceof Net_LDAP2_Entry) {
return PEAR::raiseError('Parameter $entry is expected to be a Net_LDAP2_Entry object! (If DN was passed, conversion failed)');
}
if (null !== $target_ldap && !$target_ldap instanceof Net_LDAP2) {
return PEAR::raiseError('Parameter $target_ldap is expected to be a Net_LDAP2 object!');
}
if ($target_ldap && $target_ldap !== $this) {
// cross directory move
if (is_string($entry)) {
return PEAR::raiseError('Unable to perform cross directory move: operation requires a Net_LDAP2_Entry object');
}
if ($target_ldap->dnExists($newdn)) {
return PEAR::raiseError('Unable to perform cross directory move: entry does exist in target directory');
}
$entry_o->dn($newdn);
$res = $target_ldap->add($entry_o);
if (self::isError($res)) {
return PEAR::raiseError('Unable to perform cross directory move: '.$res->getMessage().' in target directory');
}
$res = $this->delete($entry_o->currentDN());
if (self::isError($res)) {
$res2 = $target_ldap->delete($entry_o); // undo add
if (self::isError($res2)) {
$add_error_string = 'Additionally, the deletion (undo add) of $entry in target directory failed.';
}
return PEAR::raiseError('Unable to perform cross directory move: '.$res->getMessage().' in source directory. '.$add_error_string);
}
$entry_o->setLDAP($target_ldap);
return true;
} else {
// local move
$entry_o->dn($newdn);
$entry_o->setLDAP($this);
return $entry_o->update();
}
}
/**
* Copy an entry to a new location
*
* The entry will be immediately copied.
* Please note that only attributes you have
* selected will be copied.
*
* @param Net_LDAP2_Entry &$entry Entry object
* @param string $newdn New FQF-DN of the entry
*
* @return Net_LDAP2_Error|Net_LDAP2_Entry Error Message or reference to the copied entry
*/
public function &copy(&$entry, $newdn)
{
if (!$entry instanceof Net_LDAP2_Entry) {
return PEAR::raiseError('Parameter $entry is expected to be a Net_LDAP2_Entry object!');
}
$newentry = Net_LDAP2_Entry::createFresh($newdn, $entry->getValues());
$result = $this->add($newentry);
if ($result instanceof Net_LDAP2_Error) {
return $result;
} else {
return $newentry;
}
}
/**
* Returns the string for an ldap errorcode.
*
* Made to be able to make better errorhandling
* Function based on DB::errorMessage()
* Tip: The best description of the errorcodes is found here:
* http://www.directory-info.com/LDAP2/LDAPErrorCodes.html
*
* @param int $errorcode Error code
*
* @return string The errorstring for the error.
*/
public function errorMessage($errorcode)
{
$errorMessages = array(
0x00 => "LDAP_SUCCESS",
0x01 => "LDAP_OPERATIONS_ERROR",
0x02 => "LDAP_PROTOCOL_ERROR",
0x03 => "LDAP_TIMELIMIT_EXCEEDED",
0x04 => "LDAP_SIZELIMIT_EXCEEDED",
0x05 => "LDAP_COMPARE_FALSE",
0x06 => "LDAP_COMPARE_TRUE",
0x07 => "LDAP_AUTH_METHOD_NOT_SUPPORTED",
0x08 => "LDAP_STRONG_AUTH_REQUIRED",
0x09 => "LDAP_PARTIAL_RESULTS",
0x0a => "LDAP_REFERRAL",
0x0b => "LDAP_ADMINLIMIT_EXCEEDED",
0x0c => "LDAP_UNAVAILABLE_CRITICAL_EXTENSION",
0x0d => "LDAP_CONFIDENTIALITY_REQUIRED",
0x0e => "LDAP_SASL_BIND_INPROGRESS",
0x10 => "LDAP_NO_SUCH_ATTRIBUTE",
0x11 => "LDAP_UNDEFINED_TYPE",
0x12 => "LDAP_INAPPROPRIATE_MATCHING",
0x13 => "LDAP_CONSTRAINT_VIOLATION",
0x14 => "LDAP_TYPE_OR_VALUE_EXISTS",
0x15 => "LDAP_INVALID_SYNTAX",
0x20 => "LDAP_NO_SUCH_OBJECT",
0x21 => "LDAP_ALIAS_PROBLEM",
0x22 => "LDAP_INVALID_DN_SYNTAX",
0x23 => "LDAP_IS_LEAF",
0x24 => "LDAP_ALIAS_DEREF_PROBLEM",
0x30 => "LDAP_INAPPROPRIATE_AUTH",
0x31 => "LDAP_INVALID_CREDENTIALS",
0x32 => "LDAP_INSUFFICIENT_ACCESS",
0x33 => "LDAP_BUSY",
0x34 => "LDAP_UNAVAILABLE",
0x35 => "LDAP_UNWILLING_TO_PERFORM",
0x36 => "LDAP_LOOP_DETECT",
0x3C => "LDAP_SORT_CONTROL_MISSING",
0x3D => "LDAP_INDEX_RANGE_ERROR",
0x40 => "LDAP_NAMING_VIOLATION",
0x41 => "LDAP_OBJECT_CLASS_VIOLATION",
0x42 => "LDAP_NOT_ALLOWED_ON_NONLEAF",
0x43 => "LDAP_NOT_ALLOWED_ON_RDN",
0x44 => "LDAP_ALREADY_EXISTS",
0x45 => "LDAP_NO_OBJECT_CLASS_MODS",
0x46 => "LDAP_RESULTS_TOO_LARGE",
0x47 => "LDAP_AFFECTS_MULTIPLE_DSAS",
0x50 => "LDAP_OTHER",
0x51 => "LDAP_SERVER_DOWN",
0x52 => "LDAP_LOCAL_ERROR",
0x53 => "LDAP_ENCODING_ERROR",
0x54 => "LDAP_DECODING_ERROR",
0x55 => "LDAP_TIMEOUT",
0x56 => "LDAP_AUTH_UNKNOWN",
0x57 => "LDAP_FILTER_ERROR",
0x58 => "LDAP_USER_CANCELLED",
0x59 => "LDAP_PARAM_ERROR",
0x5a => "LDAP_NO_MEMORY",
0x5b => "LDAP_CONNECT_ERROR",
0x5c => "LDAP_NOT_SUPPORTED",
0x5d => "LDAP_CONTROL_NOT_FOUND",
0x5e => "LDAP_NO_RESULTS_RETURNED",
0x5f => "LDAP_MORE_RESULTS_TO_RETURN",
0x60 => "LDAP_CLIENT_LOOP",
0x61 => "LDAP_REFERRAL_LIMIT_EXCEEDED",
1000 => "Unknown Net_LDAP2 Error"
);
return isset($errorMessages[$errorcode]) ?
$errorMessages[$errorcode] :
$errorMessages[NET_LDAP2_ERROR] . ' (' . $errorcode . ')';
}
/**
* Gets a rootDSE object
*
* This either fetches a fresh rootDSE object or returns it from
* the internal cache for performance reasons, if possible.
*
* @param array $attrs Array of attributes to search for
*
* @access public
* @return Net_LDAP2_Error|Net_LDAP2_RootDSE Net_LDAP2_Error or Net_LDAP2_RootDSE object
*/
public function &rootDse($attrs = null)
{
if ($attrs !== null && !is_array($attrs)) {
return PEAR::raiseError('Parameter $attr is expected to be an array!');
}
$attrs_signature = serialize($attrs);
// see if we need to fetch a fresh object, or if we already
// requested this object with the same attributes
if (true || !array_key_exists($attrs_signature, $this->_rootDSE_cache)) {
$rootdse =& Net_LDAP2_RootDSE::fetch($this, $attrs);
if ($rootdse instanceof Net_LDAP2_Error) {
return $rootdse;
}
// search was ok, store rootDSE in cache
$this->_rootDSE_cache[$attrs_signature] = $rootdse;
}
return $this->_rootDSE_cache[$attrs_signature];
}
/**
* Alias function of rootDse() for perl-ldap interface
*
* @access public
* @see rootDse()
* @return Net_LDAP2_Error|Net_LDAP2_RootDSE
*/
public function &root_dse()
{
$args = func_get_args();
return call_user_func_array(array(&$this, 'rootDse'), $args);
}
/**
* Get a schema object
*
* @param string $dn (optional) Subschema entry dn
*
* @access public
* @return Net_LDAP2_Schema|Net_LDAP2_Error Net_LDAP2_Schema or Net_LDAP2_Error object
*/
public function &schema($dn = null)
{
// Schema caching by Knut-Olav Hoven
// If a schema caching object is registered, we use that to fetch
// a schema object.
// See registerSchemaCache() for more info on this.
if ($this->_schema === null) {
if ($this->_schema_cache) {
$cached_schema = $this->_schema_cache->loadSchema();
if ($cached_schema instanceof Net_LDAP2_Error) {
return $cached_schema; // route error to client
} else {
if ($cached_schema instanceof Net_LDAP2_Schema) {
$this->_schema = $cached_schema;
}
}
}
}
// Fetch schema, if not tried before and no cached version available.
// If we are already fetching the schema, we will skip fetching.
if ($this->_schema === null) {
// store a temporary error message so subsequent calls to schema() can
// detect, that we are fetching the schema already.
// Otherwise we will get an infinite loop at Net_LDAP2_Schema::fetch()
$this->_schema = new Net_LDAP2_Error('Schema not initialized');
$this->_schema = Net_LDAP2_Schema::fetch($this, $dn);
// If schema caching is active, advise the cache to store the schema
if ($this->_schema_cache) {
$caching_result = $this->_schema_cache->storeSchema($this->_schema);
if ($caching_result instanceof Net_LDAP2_Error) {
return $caching_result; // route error to client
}
}
}
return $this->_schema;
}
/**
* Enable/disable persistent schema caching
*
* Sometimes it might be useful to allow your scripts to cache
* the schema information on disk, so the schema is not fetched
* every time the script runs which could make your scripts run
* faster.
*
* This method allows you to register a custom object that
* implements your schema cache. Please see the SchemaCache interface
* (SchemaCache.interface.php) for informations on how to implement this.
* To unregister the cache, pass null as $cache parameter.
*
* For ease of use, Net_LDAP2 provides a simple file based cache
* which is used in the example below. You may use this, for example,
* to store the schema in a linux tmpfs which results in the schema
* beeing cached inside the RAM which allows nearly instant access.
* <code>
* // Create the simple file cache object that comes along with Net_LDAP2
* $mySchemaCache_cfg = array(
* 'path' => '/tmp/Net_LDAP2_Schema.cache',
* 'max_age' => 86400 // max age is 24 hours (in seconds)
* );
* $mySchemaCache = new Net_LDAP2_SimpleFileSchemaCache($mySchemaCache_cfg);
* $ldap = new Net_LDAP2::connect(...);
* $ldap->registerSchemaCache($mySchemaCache); // enable caching
* // now each call to $ldap->schema() will get the schema from disk!
* </code>
*
* @param Net_LDAP2_SchemaCache|null $cache Object implementing the Net_LDAP2_SchemaCache interface
*
* @return true|Net_LDAP2_Error
*/
public function registerSchemaCache($cache) {
if (is_null($cache)
|| (is_object($cache) && in_array('Net_LDAP2_SchemaCache', class_implements($cache))) ) {
$this->_schema_cache = $cache;
return true;
} else {
return new Net_LDAP2_Error('Custom schema caching object is either no '.
'valid object or does not implement the Net_LDAP2_SchemaCache interface!');
}
}
/**
* Checks if phps ldap-extension is loaded
*
* If it is not loaded, it tries to load it manually using PHPs dl().
* It knows both windows-dll and *nix-so.
*
* @static
* @return Net_LDAP2_Error|true
*/
public static function checkLDAPExtension()
{
if (!extension_loaded('ldap') && !@dl('ldap.' . PHP_SHLIB_SUFFIX)) {
return new Net_LDAP2_Error("It seems that you do not have the ldap-extension installed. Please install it before using the Net_LDAP2 package.");
} else {
return true;
}
}
/**
* Encodes given attributes to UTF8 if needed by schema
*
* This function takes attributes in an array and then checks against the schema if they need
* UTF8 encoding. If that is so, they will be encoded. An encoded array will be returned and
* can be used for adding or modifying.
*
* $attributes is expected to be an array with keys describing
* the attribute names and the values as the value of this attribute:
* <code>$attributes = array('cn' => 'foo', 'attr2' => array('mv1', 'mv2'));</code>
*
* @param array $attributes Array of attributes
*
* @access public
* @return array|Net_LDAP2_Error Array of UTF8 encoded attributes or Error
*/
public function utf8Encode($attributes)
{
return $this->utf8($attributes, 'utf8_encode');
}
/**
* Decodes the given attribute values if needed by schema
*
* $attributes is expected to be an array with keys describing
* the attribute names and the values as the value of this attribute:
* <code>$attributes = array('cn' => 'foo', 'attr2' => array('mv1', 'mv2'));</code>
*
* @param array $attributes Array of attributes
*
* @access public
* @see utf8Encode()
* @return array|Net_LDAP2_Error Array with decoded attribute values or Error
*/
public function utf8Decode($attributes)
{
return $this->utf8($attributes, 'utf8_decode');
}
/**
* Encodes or decodes attribute values if needed
*
* @param array $attributes Array of attributes
* @param array $function Function to apply to attribute values
*
* @access protected
* @return array|Net_LDAP2_Error Array of attributes with function applied to values or Error
*/
protected function utf8($attributes, $function)
{
if (!is_array($attributes) || array_key_exists(0, $attributes)) {
return PEAR::raiseError('Parameter $attributes is expected to be an associative array');
}
if (!$this->_schema) {
$this->_schema = $this->schema();
}
if (!$this->_link || self::isError($this->_schema) || !function_exists($function)) {
return $attributes;
}
if (is_array($attributes) && count($attributes) > 0) {
foreach ($attributes as $k => $v) {
if (!isset($this->_schemaAttrs[$k])) {
$attr = $this->_schema->get('attribute', $k);
if (self::isError($attr)) {
continue;
}
if (false !== strpos($attr['syntax'], '1.3.6.1.4.1.1466.115.121.1.15')) {
$encode = true;
} else {
$encode = false;
}
$this->_schemaAttrs[$k] = $encode;
} else {
$encode = $this->_schemaAttrs[$k];
}
if ($encode) {
if (is_array($v)) {
foreach ($v as $ak => $av) {
$v[$ak] = call_user_func($function, $av);
}
} else {
$v = call_user_func($function, $v);
}
}
$attributes[$k] = $v;
}
}
return $attributes;
}
/**
* Get the LDAP link resource. It will loop attempting to
* re-establish the connection if the connection attempt fails and
* auto_reconnect has been turned on (see the _config array documentation).
*
* @access public
* @return resource LDAP link
*/
public function &getLink()
{
if ($this->_config['auto_reconnect']) {
while (true) {
//
// Return the link handle if we are already connected. Otherwise
// try to reconnect.
//
if ($this->_link !== false) {
return $this->_link;
} else {
$this->performReconnect();
}
}
}
return $this->_link;
}
}
/**
* Net_LDAP2_Error implements a class for reporting portable LDAP error messages.
*
* @category Net
* @package Net_LDAP2
* @author Tarjej Huse <tarjei@bergfald.no>
* @license http://www.gnu.org/copyleft/lesser.html LGPL
* @link http://pear.php.net/package/Net_LDAP22/
*/
class Net_LDAP2_Error extends PEAR_Error
{
/**
* Net_LDAP2_Error constructor.
*
* @param string $message String with error message.
* @param integer $code Net_LDAP2 error code
* @param integer $mode what "error mode" to operate in
* @param mixed $level what error level to use for $mode & PEAR_ERROR_TRIGGER
* @param mixed $debuginfo additional debug info, such as the last query
*
* @access public
* @see PEAR_Error
*/
public function __construct($message = 'Net_LDAP2_Error', $code = NET_LDAP2_ERROR, $mode = PEAR_ERROR_RETURN,
$level = E_USER_NOTICE, $debuginfo = null)
{
if (is_int($code)) {
$this->PEAR_Error($message . ': ' . Net_LDAP2::errorMessage($code), $code, $mode, $level, $debuginfo);
} else {
$this->PEAR_Error("$message: $code", NET_LDAP2_ERROR, $mode, $level, $debuginfo);
}
}
}
?>
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