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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Ldap
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Attribute.php 17831 2009-08-26 15:24:30Z sgehrig $
*/
/**
* Zend_Ldap_Attribute is a collection of LDAP attribute related functions.
*
* @category Zend
* @package Zend_Ldap
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Ldap_Attribute
{
const PASSWORD_HASH_MD5 = 'md5';
const PASSWORD_HASH_SMD5 = 'smd5';
const PASSWORD_HASH_SHA = 'sha';
const PASSWORD_HASH_SSHA = 'ssha';
const PASSWORD_UNICODEPWD = 'unicodePwd';
/**
* Sets a LDAP attribute.
*
* @param array $data
* @param string $attribName
* @param scalar|array|Traversable $value
* @param boolean $append
* @return void
*/
public static function setAttribute(array &$data, $attribName, $value, $append = false)
{
$attribName = strtolower($attribName);
$valArray = array();
if (is_array($value) || ($value instanceof Traversable))
{
foreach ($value as $v)
{
$v = self::_valueToLdap($v);
if (!is_null($v)) $valArray[] = $v;
}
}
else if (!is_null($value))
{
$value = self::_valueToLdap($value);
if (!is_null($value)) $valArray[] = $value;
}
if ($append === true && isset($data[$attribName]))
{
if (is_string($data[$attribName])) $data[$attribName] = array($data[$attribName]);
$data[$attribName] = array_merge($data[$attribName], $valArray);
}
else
{
$data[$attribName] = $valArray;
}
}
/**
* Gets a LDAP attribute.
*
* @param array $data
* @param string $attribName
* @param integer $index
* @return array|mixed
*/
public static function getAttribute(array $data, $attribName, $index = null)
{
$attribName = strtolower($attribName);
if (is_null($index)) {
if (!isset($data[$attribName])) return array();
$retArray = array();
foreach ($data[$attribName] as $v)
{
$retArray[] = self::_valueFromLdap($v);
}
return $retArray;
} else if (is_int($index)) {
if (!isset($data[$attribName])) {
return null;
} else if ($index >= 0 && $index<count($data[$attribName])) {
return self::_valueFromLdap($data[$attribName][$index]);
} else {
return null;
}
}
return null;
}
/**
* Checks if the given value(s) exist in the attribute
*
* @param array $data
* @param string $attribName
* @param mixed|array $value
* @return boolean
*/
public static function attributeHasValue(array &$data, $attribName, $value)
{
$attribName = strtolower($attribName);
if (!isset($data[$attribName])) return false;
if (is_scalar($value)) {
$value = array($value);
}
foreach ($value as $v) {
$v = self::_valueToLdap($v);
if (!in_array($v, $data[$attribName], true)) {
return false;
}
}
return true;
}
/**
* Removes duplicate values from a LDAP attribute
*
* @param array $data
* @param string $attribName
* @return void
*/
public static function removeDuplicatesFromAttribute(array &$data, $attribName)
{
$attribName = strtolower($attribName);
if (!isset($data[$attribName])) return;
$data[$attribName] = array_values(array_unique($data[$attribName]));
}
/**
* Remove given values from a LDAP attribute
*
* @param array $data
* @param string $attribName
* @param mixed|array $value
* @return void
*/
public static function removeFromAttribute(array &$data, $attribName, $value)
{
$attribName = strtolower($attribName);
if (!isset($data[$attribName])) return;
if (is_scalar($value)) {
$value = array($value);
}
$valArray = array();
foreach ($value as $v)
{
$v = self::_valueToLdap($v);
if ($v !== null) $valArray[] = $v;
}
$resultArray = $data[$attribName];
foreach ($valArray as $rv) {
$keys = array_keys($resultArray, $rv);
foreach ($keys as $k) {
unset($resultArray[$k]);
}
}
$resultArray = array_values($resultArray);
$data[$attribName] = $resultArray;
}
/**
* @param mixed $value
* @return string|null
*/
private static function _valueToLdap($value)
{
if (is_string($value)) return $value;
else if (is_int($value) || is_float($value)) return (string)$value;
else if (is_bool($value)) return ($value === true) ? 'TRUE' : 'FALSE';
else if (is_object($value) || is_array($value)) return serialize($value);
else if (is_resource($value) && get_resource_type($value) === 'stream')
return stream_get_contents($value);
else return null;
}
/**
* @param string $value
* @return string|boolean
*/
private static function _valueFromLdap($value)
{
$value = (string)$value;
if ($value === 'TRUE') return true;
else if ($value === 'FALSE') return false;
else return $value;
}
/**
* Converts a PHP data type into its LDAP representation
*
* @param mixed $value
* @return string|null - null if the PHP data type cannot be converted.
*/
public static function convertToLdapValue($value)
{
return self::_valueToLdap($value);
}
/**
* Converts an LDAP value into its PHP data type
*
* @param string $value
* @return mixed
*/
public static function convertFromLdapValue($value)
{
return self::_valueFromLdap($value);
}
/**
* Converts a timestamp into its LDAP date/time representation
*
* @param integer $value
* @param boolean $utc
* @return string|null - null if the value cannot be converted.
*/
public static function convertToLdapDateTimeValue($value, $utc = false)
{
return self::_valueToLdapDateTime($value, $utc);
}
/**
* Converts LDAP date/time representation into a timestamp
*
* @param string $value
* @return integer|null - null if the value cannot be converted.
*/
public static function convertFromLdapDateTimeValue($value)
{
return self::_valueFromLdapDateTime($value);
}
/**
* Sets a LDAP password.
*
* @param array $data
* @param string $password
* @param string $hashType
* @param string|null $attribName
* @return null
*/
public static function setPassword(array &$data, $password, $hashType = self::PASSWORD_HASH_MD5,
$attribName = null)
{
if ($attribName === null) {
if ($hashType === self::PASSWORD_UNICODEPWD) {
$attribName = 'unicodePwd';
} else {
$attribName = 'userPassword';
}
}
$hash = self::createPassword($password, $hashType);
self::setAttribute($data, $attribName, $hash, false);
}
/**
* Creates a LDAP password.
*
* @param string $password
* @param string $hashType
* @return string
*/
public static function createPassword($password, $hashType = self::PASSWORD_HASH_MD5)
{
switch ($hashType) {
case self::PASSWORD_UNICODEPWD:
/* see:
* http://msdn.microsoft.com/en-us/library/cc223248(PROT.10).aspx
*/
$password = '"' . $password . '"';
if (function_exists('mb_convert_encoding')) {
$password = mb_convert_encoding($password, 'UTF-16LE', 'UTF-8');
} else if (function_exists('iconv')) {
$password = iconv('UTF-8', 'UTF-16LE', $password);
} else {
$len = strlen($password);
$new = '';
for($i=0; $i < $len; $i++) {
$new .= $password[$i] . "\x00";
}
$password = $new;
}
return $password;
case self::PASSWORD_HASH_SSHA:
$salt = substr(sha1(uniqid(mt_rand(), true), true), 0, 4);
$rawHash = sha1($password . $salt, true) . $salt;
$method = '{SSHA}';
break;
case self::PASSWORD_HASH_SHA:
$rawHash = sha1($password, true);
$method = '{SHA}';
break;
case self::PASSWORD_HASH_SMD5:
$salt = substr(sha1(uniqid(mt_rand(), true), true), 0, 4);
$rawHash = md5($password . $salt, true) . $salt;
$method = '{SMD5}';
break;
case self::PASSWORD_HASH_MD5:
default:
$rawHash = md5($password, true);
$method = '{MD5}';
break;
}
return $method . base64_encode($rawHash);
}
/**
* Sets a LDAP date/time attribute.
*
* @param array $data
* @param string $attribName
* @param integer|array|Traversable $value
* @param boolean $utc
* @param boolean $append
* @return null
*/
public static function setDateTimeAttribute(array &$data, $attribName, $value, $utc = false,
$append = false)
{
$convertedValues = array();
if (is_array($value) || ($value instanceof Traversable))
{
foreach ($value as $v) {
$v = self::_valueToLdapDateTime($v, $utc);
if (!is_null($v)) $convertedValues[] = $v;
}
}
else if (!is_null($value)) {
$value = self::_valueToLdapDateTime($value, $utc);
if (!is_null($value)) $convertedValues[] = $value;
}
self::setAttribute($data, $attribName, $convertedValues, $append);
}
/**
* @param integer $value
* @param boolean $utc
* @return string|null
*/
private static function _valueToLdapDateTime($value, $utc)
{
if (is_int($value)) {
if ($utc === true) return gmdate('YmdHis', $value) . 'Z';
else return date('YmdHisO', $value);
}
else return null;
}
/**
* Gets a LDAP date/time attribute.
*
* @param array $data
* @param string $attribName
* @param integer $index
* @return array|integer
*/
public static function getDateTimeAttribute(array $data, $attribName, $index = null)
{
$values = self::getAttribute($data, $attribName, $index);
if (is_array($values)) {
for ($i = 0; $i<count($values); $i++) {
$newVal = self::_valueFromLdapDateTime($values[$i]);
if (!is_null($newVal)) $values[$i] = $newVal;
}
}
else $values = self::_valueFromLdapDateTime($values);
return $values;
}
/**
* @param string $value
* @return integer|null
*/
private static function _valueFromLdapDateTime($value)
{
$matches = array();
if (preg_match('/^(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})([+-]\d{4}|Z)$/', $value, $matches)) {
$year = $matches[1];
$month = $matches[2];
$day = $matches[3];
$hour = $matches[4];
$minute = $matches[5];
$second = $matches[6];
$timezone = $matches[7];
$date = gmmktime($hour, $minute, $second, $month, $day, $year);
if ($timezone !== 'Z') {
$tzDirection = substr($timezone, 0, 1);
$tzOffsetHour = substr($timezone, 1, 2);
$tzOffsetMinute = substr($timezone, 3, 2);
$tzOffset = ($tzOffsetHour*60*60) + ($tzOffsetMinute*60);
if ($tzDirection == '+') $date -= $tzOffset;
else if ($tzDirection == '-') $date += $tzOffset;
}
return $date;
}
else return null;
}
}
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