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authorEvan Prodromou <evan@status.net>2009-11-07 13:03:52 -0500
committerEvan Prodromou <evan@status.net>2009-11-07 13:03:52 -0500
commitd9cde0ef80ee838a99035d44f0286b3cc902e332 (patch)
treeac9d74d52a06890db71f61ac934e75b937c19753 /extlib/Net/LDAP2.php
parentf2b642ce822c480cfc418c38106cc18c3a428cf4 (diff)
parent2d8ad0409d8e78ec35a65156bc375eacbe561963 (diff)
Merge branch '0.9.x' into userflag
Diffstat (limited to 'extlib/Net/LDAP2.php')
-rw-r--r--extlib/Net/LDAP2.php1791
1 files changed, 1791 insertions, 0 deletions
diff --git a/extlib/Net/LDAP2.php b/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);
+ }
+ }
+}
+
+?>