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<?php |
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namespace SilverStripe\LDAP\Model; |
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/** |
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* Class LDAPUtil |
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* |
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* Provides some commonly used functions for LDAP and SAML. |
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*/ |
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class LDAPUtil |
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{ |
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/** |
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* Checks if the string is a valid guid in the format of A98C5A1E-A742-4808-96FA-6F409E799937 |
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* |
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* @param string $guid |
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* @return bool |
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*/ |
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public static function validGuid($guid) |
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{ |
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if (preg_match('/^[A-Z0-9]{8}-[A-Z0-9]{4}-[A-Z0-9]{4}-[A-Z0-9]{4}-[A-Z0-9]{12}?$/', $guid)) { |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @param string $object_guid |
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* @return string |
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*/ |
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public static function bin_to_str_guid($object_guid) |
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{ |
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$hex_guid = bin2hex($object_guid); |
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$hex_guid_to_guid_str = ''; |
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for ($k = 1; $k <= 4; ++$k) { |
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$hex_guid_to_guid_str .= substr($hex_guid, 8 - 2 * $k, 2); |
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} |
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$hex_guid_to_guid_str .= '-'; |
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for ($k = 1; $k <= 2; ++$k) { |
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$hex_guid_to_guid_str .= substr($hex_guid, 12 - 2 * $k, 2); |
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} |
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$hex_guid_to_guid_str .= '-'; |
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for ($k = 1; $k <= 2; ++$k) { |
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$hex_guid_to_guid_str .= substr($hex_guid, 16 - 2 * $k, 2); |
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} |
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$hex_guid_to_guid_str .= '-' . substr($hex_guid, 16, 4); |
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$hex_guid_to_guid_str .= '-' . substr($hex_guid, 20); |
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return strtoupper($hex_guid_to_guid_str); |
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} |
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/** |
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* @param string $str_guid |
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* @param bool $escape |
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* @return string |
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*/ |
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public static function str_to_hex_guid($str_guid, $escape = false) |
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{ |
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$str_guid = str_replace('-', '', $str_guid); |
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$octet_str = substr($str_guid, 6, 2); |
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$octet_str .= substr($str_guid, 4, 2); |
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$octet_str .= substr($str_guid, 2, 2); |
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$octet_str .= substr($str_guid, 0, 2); |
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$octet_str .= substr($str_guid, 10, 2); |
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$octet_str .= substr($str_guid, 8, 2); |
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$octet_str .= substr($str_guid, 14, 2); |
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$octet_str .= substr($str_guid, 12, 2); |
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$octet_str .= substr($str_guid, 16, strlen($str_guid)); |
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if ($escape) { |
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$escaped = '\\'; |
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for ($i = 0; $i < strlen($octet_str); $i += 2) { |
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$escaped .= substr($octet_str, $i, 2); |
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if ($i != strlen($octet_str) - 2) { |
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$escaped .= '\\'; |
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} |
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} |
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return $escaped; |
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} |
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return $octet_str; |
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} |
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/** |
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* @param string $binsid |
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* @return string |
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*/ |
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public static function bin_to_str_sid($binsid) |
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{ |
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$hex_sid = bin2hex($binsid); |
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$rev = hexdec(substr($hex_sid, 0, 2)); |
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$subcount = hexdec(substr($hex_sid, 2, 2)); |
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$auth = hexdec(substr($hex_sid, 4, 12)); |
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$result = "$rev-$auth"; |
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for ($x = 0; $x < $subcount; $x++) { |
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$subauth[$x] = hexdec(self::little_endian(substr($hex_sid, 16 + ($x * 8), 8))); |
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$result .= '-' . $subauth[$x]; |
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} |
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// Cheat by tacking on the S- |
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return 'S-' . $result; |
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} |
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/** |
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* Converts a little-endian hex-number to one, that 'hexdec' can convert |
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* @param string $hex |
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* @return string |
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*/ |
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public static function little_endian($hex) |
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{ |
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$result = ''; |
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for ($x = strlen($hex) - 2; $x >= 0; $x = $x - 2) { |
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$result .= substr($hex, $x, 2); |
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} |
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return $result; |
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} |
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} |
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silverstripe /
silverstripe-ldap
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