1161f02fec09243d1feb1daf3e44e876b9ce1393
4 * Change password LDAP backend
6 * @copyright © 2005 The SquirrelMail Project Team
7 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
10 * @subpackage change_password
14 * If SM_PATH isn't defined, define it. Required to include files.
17 if (!defined('SM_PATH')) define('SM_PATH','../../../');
19 /** load required functions */
21 /** error_box() function */
22 include_once(SM_PATH
. 'functions/display_messages.php');
23 /** sqimap_get_user_server() function */
24 include_once(SM_PATH
. 'functions/imap_general.php');
26 /** get imap server and username globals */
27 global $imapServerAddress, $username;
29 /** Default plugin configuration.*/
31 * Address of LDAP server.
32 * You can use any URL format that is supported by your LDAP extension.
35 * <li>'ldap.example.com' - connect to server on ldap.example.com address
36 * <li>'ldaps://ldap.example.com' - connect to server on ldap.example.com address
37 * and use SSL encrypted connection to default LDAPs port.
39 * defaults to imap server address.
40 * @link http://www.php.net/ldap-connect
41 * @global string $cpw_ldap_server
43 global $cpw_ldap_server;
44 $cpw_ldap_server=$imapServerAddress;
47 * Port of LDAP server.
48 * Used only when $cpw_ldap_server specifies IP address or DNS name.
49 * @global integer $cpw_ldap_port
51 global $cpw_ldap_port;
55 * LDAP basedn that is used for binding to LDAP server.
56 * this option must be set to correct value.
57 * @global string $cpw_ldap_basedn;
59 global $cpw_ldap_basedn;
63 * LDAP connection options
64 * @link http://www.php.net/ldap-set-option
65 * @global array $cpw_ldap_connect_opts
67 global $cpw_ldap_connect_opts;
68 $cpw_ldap_connect_opts=array();
71 * Controls use of starttls on LDAP connection.
72 * Requires PHP 4.2+, PHP LDAP extension with SSL support and
73 * PROTOCOL_VERSION => 3 setting in $cpw_ldap_connect_opts
74 * @global boolean $cpw_ldap_use_tls
76 global $cpw_ldap_use_tls;
77 $cpw_ldap_use_tls=false;
80 * BindDN that should be able to search LDAP directory and find DN used by user.
81 * Uses anonymous bind if set to empty string. You should not use DN with write
82 * access to LDAP directory here. Write access is not required.
83 * @global string $cpw_ldap_binddn
85 global $cpw_ldap_binddn;
89 * password used for $cpw_ldap_binddn
90 * @global string $cpw_ldap_bindpw
92 global $cpw_ldap_bindpw;
96 * BindDN that should be able to change password.
97 * WARNING: sometimes user has enough privileges to change own password.
98 * If you leave default value, plugin will try to connect with DN that
99 * is detected in $cpw_ldap_username_attr=$username search and current
100 * user password will be used for authentication.
101 * @global string $cpw_ldap_admindn
103 global $cpw_ldap_admindn;
104 $cpw_ldap_admindn='';
107 * password used for $cpw_ldap_admindn
108 * @global string $cpw_ldap_adminpw
110 global $cpw_ldap_adminpw;
111 $cpw_ldap_adminpw='';
114 * LDAP attribute that stores username.
115 * username entry should be unique for $cpw_ldap_basedn
116 * @global string $cpw_ldap_userid_attr
118 global $cpw_ldap_userid_attr;
119 $cpw_ldap_userid_attr='uid';
122 * crypto that is used to encode new password
123 * If set to empty string, system tries to keep same encoding/hashing algorithm
124 * @global string $cpw_ldap_default_crypto
126 global $cpw_ldap_default_crypto;
127 $cpw_ldap_default_crypto='';
129 /** end of default config */
131 /** configuration overrides from config file */
132 if (isset($cpw_ldap['server'])) $cpw_ldap_server=$cpw_ldap['server'];
133 if (isset($cpw_ldap['port'])) $cpw_ldap_port=$cpw_ldap['port'];
134 if (isset($cpw_ldap['basedn'])) $cpw_ldap_basedn=$cpw_ldap['basedn'];
135 if (isset($cpw_ldap['connect_opts'])) $cpw_ldap_connect_opts=$cpw_ldap['connect_opts'];
136 if (isset($cpw_ldap['use_tls'])) $cpw_ldap_use_tls=$cpw_ldap['use_tls'];
137 if (isset($cpw_ldap['binddn'])) $cpw_ldap_binddn=$cpw_ldap['binddn'];
138 if (isset($cpw_ldap['bindpw'])) $cpw_ldap_bindpw=$cpw_ldap['bindpw'];
139 if (isset($cpw_ldap['admindn'])) $cpw_ldap_admindn=$cpw_ldap['admindn'];
140 if (isset($cpw_ldap['adminpw'])) $cpw_ldap_adminpw=$cpw_ldap['adminpw'];
141 if (isset($cpw_ldap['userid_attr'])) $cpw_ldap_userid_attr=$cpw_ldap['userid_attr'];
142 if (isset($cpw_ldap['default_crypto'])) $cpw_ldap_default_crypto=$cpw_ldap['default_crypto'];
144 /** make sure that setting does not contain mapping */
145 $cpw_ldap_server=sqimap_get_user_server($cpw_ldap_server,$username);
148 * Adding plugin hooks
150 global $squirrelmail_plugin_hooks;
151 $squirrelmail_plugin_hooks['change_password_dochange']['ldap'] =
153 $squirrelmail_plugin_hooks['change_password_init']['ldap'] =
157 * Makes sure that required functions and configuration options are set.
159 function cpw_ldap_init() {
161 global $cpw_ldap_basedn;
163 // set initial value for error tracker
164 $cpw_ldap_initerr=false;
166 // check for ldap support in php
167 if (! function_exists('ldap_connect')) {
168 error_box(_("Current configuration requires LDAP support in PHP."),$color);
169 $cpw_ldap_initerr=true;
172 // chech required configuration settings.
173 if ($cpw_ldap_basedn=='') {
174 error_box(_("Plugin is not configured correctly."),$color);
175 $cpw_ldap_initerr=true;
178 // if error var is positive, close html and stop execution
179 if ($cpw_ldap_initerr) {
180 echo '</body></html>';
187 * Changes password. Main function attached to hook
188 * @param array $data The username/curpw/newpw data.
189 * @return array Array of error messages.
191 function cpw_ldap_dochange($data) {
192 global $cpw_ldap_server, $cpw_ldap_port, $cpw_ldap_basedn,
193 $cpw_ldap_connect_opts,$cpw_ldap_use_tls,
194 $cpw_ldap_binddn, $cpw_ldap_bindpw,
195 $cpw_ldap_admindn, $cpw_ldap_adminpw;
197 // unfortunately, we can only pass one parameter to a hook function,
198 // so we have to pass it as an array.
199 $username = $data['username'];
200 $curpw = $data['curpw'];
201 $newpw = $data['newpw'];
203 // globalize current password.
208 * connect to LDAP server
209 * hide ldap_connect() function call errors, because they are processed in script.
210 * any script execution error is treated as critical, error messages are dumped
211 * to $msgs and LDAP connection is closed with ldap_unbind(). all ldap_unbind()
212 * errors are suppressed. Any other error suppression should be explained.
214 $cpw_ldap_con=@ldap_connect
($cpw_ldap_server);
217 $cpw_ldap_con_err=false;
219 // set connection options
220 if (is_array($cpw_ldap_connect_opts) && $cpw_ldap_connect_opts!=array()) {
221 // ldap_set_option() is available only with openldap 2.x and netscape directory sdk.
222 if (function_exists('ldap_set_option')) {
223 foreach ($cpw_ldap_connect_opts as $opt => $value) {
224 // Make sure that constant is defined defore using it.
225 if (defined('LDAP_OPT_' . $opt)) {
226 // ldap_set_option() should not produce E_NOTICE or E_ALL errors and does not modify ldap_error().
227 // leave it without @ in order to see any weird errors
228 if (! ldap_set_option($cpw_ldap_con,constant('LDAP_OPT_' . $opt),$value)) {
230 array_push($msgs,sprintf(_("Setting of LDAP connection option %s to value %s failed."),$opt,$value));
231 $cpw_ldap_con_err=true;
234 array_push($msgs,sprintf(_("Incorrect LDAP connection option: %s"),$opt));
235 $cpw_ldap_con_err=true;
239 array_push($msgs,_("Current PHP LDAP extension does not allow use of ldap_set_option() function."));
240 $cpw_ldap_con_err=true;
244 // check for connection errors and stop execution if something is wrong
245 if ($cpw_ldap_con_err) {
246 @ldap_unbind
($cpw_ldap_con);
250 // enable ldap starttls
251 if ($cpw_ldap_use_tls &&
252 check_php_version(4,2,0) &&
253 isset($cpw_ldap_connect_opts['PROTOCOL_VERSION']) &&
254 $cpw_ldap_connect_opts['PROTOCOL_VERSION']>=3 &&
255 function_exists('ldap_start_tls')) {
256 // suppress ldap_start_tls errors and process error messages
257 if (! @ldap_start_tls
($cpw_ldap_con)) {
259 _("Unable to use TLS."),
260 sprintf(_("Error: %s"),ldap_error($cpw_ldap_con)));
261 $cpw_ldap_con_err=true;
263 } elseif ($cpw_ldap_use_tls) {
264 array_push($msgs,_("Unable to use LDAP TLS in current setup."));
265 $cpw_ldap_con_err=true;
268 // check for connection errors and stop execution if something is wrong
269 if ($cpw_ldap_con_err) {
270 @ldap_unbind
($cpw_ldap_con);
275 * Bind to LDAP (use anonymous bind or unprivileged DN) in order to get user's DN
276 * hide ldap_bind() function call errors, because errors are processed in script
278 if ($cpw_ldap_binddn!='') {
279 // authenticated bind
280 $cpw_ldap_binding=@ldap_bind
($cpw_ldap_con,$cpw_ldap_binddn,$cpw_ldap_bindpw);
283 $cpw_ldap_binding=@ldap_bind
($cpw_ldap_con);
286 // check ldap_bind errors
287 if (! $cpw_ldap_binding) {
289 _("Unable to bind to LDAP server."),
290 sprintf(_("Server replied: %s"),ldap_error($cpw_ldap_con)));
291 @ldap_unbind
($cpw_ldap_con);
296 $cpw_ldap_search_err=cpw_ldap_uid_search($cpw_ldap_con,$cpw_ldap_basedn,$msgs,$cpw_ldap_res,$cpw_ldap_userdn);
298 // check for search errors and stop execution if something is wrong
299 if (! $cpw_ldap_search_err) {
300 @ldap_unbind
($cpw_ldap_con);
305 * unset $cpw_ldap_res2 variable, if such var exists.
306 * $cpw_ldap_res2 object can be set in two places and second place checks,
307 * if object was created in first place. if variable name matches (somebody
308 * uses $cpw_ldap_res2 in code or globals), incorrect validation might
309 * cause script errors.
311 if (isset($cpw_ldap_res2)) unset($cpw_ldap_res2);
313 // rebind as userdn or admindn
314 if ($cpw_ldap_admindn!='') {
316 $cpw_ldap_binding=@ldap_bind
($cpw_ldap_con,$cpw_ldap_admindn,$cpw_ldap_adminpw);
318 if ($cpw_ldap_binding) {
319 // repeat search in order to get password info. Password info should be unavailable in unprivileged bind.
320 $cpw_ldap_search_err=cpw_ldap_uid_search($cpw_ldap_con,$cpw_ldap_basedn,$msgs,$cpw_ldap_res2,$cpw_ldap_userdn);
322 // check for connection errors and stop execution if something is wrong
323 if (! $cpw_ldap_search_err) {
324 @ldap_unbind
($cpw_ldap_con);
325 // errors are added to msgs by cpw_ldap_uid_search()
329 // we should check user password here.
330 // suppress errors and check value returned by function call
331 $cpw_ldap_cur_pass_array=@ldap_get_values
($cpw_ldap_con,
332 ldap_first_entry($cpw_ldap_con,$cpw_ldap_res2),'userpassword');
334 // check if ldap_get_values() have found userpassword field
335 if (! $cpw_ldap_cur_pass_array) {
336 array_push($msgs,_("Unable to find user's password attribute."));
341 if (! cpw_ldap_compare_pass($cpw_ldap_cur_pass_array[0],$curpw,$msgs)) {
342 @ldap_unbind
($cpw_ldap_con);
343 // errors are added to $msgs by cpw_ldap_compare_pass()
348 $cpw_ldap_binding=@ldap_bind
($cpw_ldap_con,$cpw_ldap_userdn,$curpw);
351 if (! $cpw_ldap_binding) {
353 _("Unable to rebind to LDAP server."),
354 sprintf(_("Server replied: %s"),ldap_error($cpw_ldap_con)));
355 @ldap_unbind
($cpw_ldap_con);
359 // repeat search in order to get password info
360 if (! isset($cpw_ldap_res2))
361 $cpw_ldap_search_err=cpw_ldap_uid_search($cpw_ldap_con,$cpw_ldap_basedn,$msgs,$cpw_ldap_res2,$cpw_ldap_userdn);
363 // check for connection errors and stop execution if something is wrong
364 if (! $cpw_ldap_search_err) {
365 @ldap_unbind
($cpw_ldap_con);
369 // getpassword. suppress errors and check value returned by function call
370 $cpw_ldap_cur_pass_array=@ldap_get_values
($cpw_ldap_con,ldap_first_entry($cpw_ldap_con,$cpw_ldap_res2),'userpassword');
372 // check if ldap_get_values() have found userpassword field.
373 // Error differs from previous one, because user managed to authenticate.
374 if (! $cpw_ldap_cur_pass_array) {
375 array_push($msgs,_("LDAP server uses different attribute to store user's password."));
379 // encrypt new password (old password is needed for plaintext encryption detection)
380 $cpw_ldap_new_pass=cpw_ldap_encrypt_pass($newpw,$cpw_ldap_cur_pass_array[0],$msgs,$curpw);
382 if (! $cpw_ldap_new_pass) {
383 @ldap_unbind
($cpw_ldap_con);
387 // set new password. suppress ldap_modify errors. script checks and displays ldap_modify errors.
388 $ldap_pass_change=@ldap_modify
($cpw_ldap_con,$cpw_ldap_userdn,array('userpassword'=>$cpw_ldap_new_pass));
390 // check if ldap_modify was successful
391 if(! $ldap_pass_change) {
392 array_push($msgs,ldap_error($cpw_ldap_con));
396 @ldap_unbind
($cpw_ldap_con);
398 array_push($msgs,_("Unable to connect to LDAP server."));
403 /** backend support functions **/
406 * Sanitizes LDAP query strings.
407 * original code - ldapquery plugin.
409 * @link http://www.faqs.org/rfcs/rfc2254.html
410 * @param string $string
411 * @return string sanitized string
413 function cpw_ldap_specialchars($string) {
414 $sanitized=array('\\' => '\5c',
420 return str_replace(array_keys($sanitized),array_values($sanitized),$string);
424 * returns crypto algorithm used in password.
425 * @param string $pass encrypted/hashed password
426 * @return string lowercased crypto algorithm name
428 function cpw_ldap_get_crypto($pass,$curpass='') {
431 if (preg_match("/^\{(.+)\}+/",$pass,$crypto)) {
432 $ret=strtolower($crypto[1]);
436 // {CRYPT} can be standard des crypt, extended des crypt, md5 crypt or blowfish
437 // depends on first salt symbols (ext_des = '_', md5 = '$1$', blowfish = '$2')
438 // and length of salt (des = 2 chars, ext_des = 9, md5 = 12, blowfish = 16).
439 if (preg_match("/^\{crypt\}\\\$1\\\$+/i",$pass)) {
441 } elseif (preg_match("/^\{crypt\}\\\$2+/i",$pass)) {
443 } elseif (preg_match("/^\{crypt\}_+/i",$pass)) {
448 // maybe password is plaintext
449 if (! $ret && $curpass!='' && $pass==$curpass) $ret='plaintext';
455 * Search LDAP for user id.
456 * @param object $ldap_con ldap connection
457 * @param string $ldap_basedn ldap basedn
458 * @param array $msgs error messages
459 * @param object $results ldap search results
460 * @param string $userdn DN of found entry
461 * @param boolean $onlyone require unique search results
462 * @return boolean false if connection failed.
464 function cpw_ldap_uid_search($ldap_con,$ldap_basedn,&$msgs,&$results,&$userdn,$onlyone=true) {
465 global $cpw_ldap_userid_attr,$username;
469 $results=ldap_search($ldap_con,$ldap_basedn,cpw_ldap_specialchars($cpw_ldap_userid_attr . '=' . $username));
473 _("Unable to find user's DN."),
475 sprintf(_("Error: %s"),ldap_error($ldap_con)));
477 } elseif ($onlyone && ldap_count_entries($ldap_con,$results)>1) {
478 array_push($msgs,_("Multiple userid matches found."));
480 } elseif (! $userdn = ldap_get_dn($ldap_con,ldap_first_entry($ldap_con,$results))) {
481 // ldap_get_dn() returned error
483 _("Unable to find user's DN."),
484 _("ldap_get_dn error."));
491 * Encrypts LDAP password
493 * if $cpw_ldap_default_crypto is set to empty string or $same_crypto is set,
494 * uses same crypto as in old password.
495 * See phpldapadmin password_hash() function
496 * @link http://phpldapadmin.sf.net
497 * @param string $pass string that has to be encrypted/hashed
498 * @param string $cur_pass_hash old password hash
499 * @param array $msgs error message
500 * @param string $curpass current password. Used for plaintext password detection.
501 * @return string encrypted/hashed password or false
503 function cpw_ldap_encrypt_pass($pass,$cur_pass_hash,&$msgs,$curpass='') {
504 global $cpw_ldap_default_crypto;
506 // which crypto should be used to encode/hash password
507 if ($cpw_ldap_default_crypto=='') {
508 $ldap_crypto=cpw_ldap_get_crypto($cur_pass_hash,$curpass);
510 $ldap_crypto=$cpw_ldap_default_crypto;
512 return cpw_ldap_password_hash($pass,$ldap_crypto,$msgs);
516 * create hashed password
517 * @param string $pass plain text password
518 * @param string $crypto used crypto algorithm
519 * @param array $msgs array used for error messages
520 * @param string $forced_salt salt that should be used during hashing.
521 * Is used only when is not set to empty string. Salt should be formated
522 * according to $crypto requirements.
523 * @return hashed password or false.
525 function cpw_ldap_password_hash($pass,$crypto,&$msgs,$forced_salt='') {
526 // set default return code
529 // lowercase crypto just in case
530 $crypto=strtolower($crypto);
532 // extra symbols used for random string in crypt salt
533 // squirrelmail GenerateRandomString() adds alphanumerics with third argument = 7.
534 $extra_salt_chars='./';
536 // encrypt/hash password
539 // minimal requirement = php with mhash extension
540 if ( function_exists( 'mhash' ) && defined('MHASH_MD4')) {
541 $ret = '{MD4}' . base64_encode( mhash( MHASH_MD4
, $pass) );
544 sprintf(_("Unsupported crypto: %s"),'md4'),
545 _("PHP mhash extension is missing or does not support selected crypto."));
549 $ret='{MD5}' . base64_encode(pack('H*',md5($pass)));
552 // minimal requirement = mhash extension with md5 support and php 4.0.4.
553 if( function_exists( 'mhash' ) && function_exists( 'mhash_keygen_s2k' ) && defined('MHASH_MD5')) {
554 sq_mt_seed( (double) microtime() * 1000000 );
555 if ($forced_salt!='') {
558 $salt = mhash_keygen_s2k( MHASH_MD5
, $pass, substr( pack( "h*", md5( mt_rand() ) ), 0, 8 ), 4 );
560 $ret = "{SMD5}".base64_encode( mhash( MHASH_MD5
, $pass.$salt ).$salt );
562 // use two array_push calls in order to display messages in different lines.
564 sprintf(_("Unsupported crypto: %s"),'smd5'),
565 _("PHP mhash extension is missing or does not support selected crypto."));
569 // minimal requirement = php with mhash extension
570 if ( function_exists( 'mhash' ) && defined('MHASH_RIPEMD160')) {
571 $ret = '{RMD160}' . base64_encode( mhash( MHASH_RIPEMD160
, $pass) );
574 sprintf(_("Unsupported crypto: %s"),'ripe-md160'),
575 _("PHP mhash extension is missing or does not support selected crypto."));
579 // minimal requirement = php 4.3.0+ or php with mhash extension
580 if ( function_exists('sha1') && defined('MHASH_SHA1')) {
581 // use php 4.3.0+ sha1 function, if it is available.
582 $ret = '{SHA}' . base64_encode(pack('H*',sha1($pass)));
583 } elseif( function_exists( 'mhash' ) ) {
584 $ret = '{SHA}' . base64_encode( mhash( MHASH_SHA1
, $pass) );
587 sprintf(_("Unsupported crypto: %s"),'sha'),
588 _("PHP mhash extension is missing or does not support selected crypto."));
592 // minimal requirement = mhash extension and php 4.0.4
593 if( function_exists( 'mhash' ) && function_exists( 'mhash_keygen_s2k' ) && defined('MHASH_SHA1')) {
594 sq_mt_seed( (double) microtime() * 1000000 );
595 if ($forced_salt!='') {
598 $salt = mhash_keygen_s2k( MHASH_SHA1
, $pass, substr( pack( "h*", md5( mt_rand() ) ), 0, 8 ), 4 );
600 $ret = "{SSHA}".base64_encode( mhash( MHASH_SHA1
, $pass.$salt ).$salt );
603 sprintf(_("Unsupported crypto: %s"),'ssha'),
604 _("PHP mhash extension is missing or does not support selected crypto."));
608 if (defined('CRYPT_STD_DES') && CRYPT_STD_DES
==1) {
609 $ret = '{CRYPT}' . crypt($pass,GenerateRandomString(2,$extra_salt_chars,7));
612 sprintf(_("Unsupported crypto: %s"),'crypt'),
613 _("System crypt library doesn't support standard DES crypt."));
617 // check if crypt() supports md5
618 if (defined('CRYPT_MD5') && CRYPT_MD5
==1) {
619 $ret = '{CRYPT}' . crypt($pass,'$1$' . GenerateRandomString(9,$extra_salt_chars,7));
622 sprintf(_("Unsupported crypto: %s"),'md5crypt'),
623 _("System crypt library doesn't have MD5 support."));
627 // check if crypt() supports extended des
628 if (defined('CRYPT_EXT_DES') && CRYPT_EXT_DES
==1) {
629 $ret = '{CRYPT}' . crypt($pass,'_' . GenerateRandomString(8,$extra_salt_chars,7));
632 sprintf(_("Unsupported crypto: %s"),'ext_des'),
633 _("System crypt library doesn't support extended DES crypt."));
637 // check if crypt() supports blowfish
638 if (defined('CRYPT_BLOWFISH') && CRYPT_BLOWFISH
==1) {
639 $ret = '{CRYPT}' . crypt($pass,'$2a$12$' . GenerateRandomString(13,$extra_salt_chars,7));
642 sprintf(_("Unsupported crypto: %s"),'Blowfish'),
643 _("System crypt library doesn't have Blowfish support."));
647 // clear plain text password
651 array_push($msgs,sprintf(_("Unsupported crypto: %s"),
652 (is_string($ldap_crypto) ?
htmlspecialchars($ldap_crypto) : _("unknown"))));
658 * compares two passwords
659 * Code reuse. See phpldapadmin password_compare() function.
660 * Some parts of code was rewritten to backend specifics.
661 * @link http://phpldapadmin.sf.net
662 * @param string $pass_hash hashed password string with password type indicators
663 * @param string $pass_clear plain text password
664 * @param array $msgs error messages
665 * @return boolean true, if passwords match
667 function cpw_ldap_compare_pass($pass_hash,$pass_clear,&$msgs) {
670 if( preg_match( "/{([^}]+)}(.*)/", $pass_hash, $cypher ) ) {
671 $pass_hash = $cypher[2];
672 $_cypher = strtolower($cypher[1]);
680 // check for mhash support
681 if ( function_exists('mhash') && defined('MHASH_SHA1')) {
682 $hash = base64_decode($pass_hash);
683 $salt = substr($hash, -4);
684 $new_hash = base64_encode( mhash( MHASH_SHA1
, $pass_clear.$salt).$salt );
685 if( strcmp( $pass_hash, $new_hash ) == 0 )
689 _("Unable to validate user's password."),
690 _("PHP mhash extension is missing or does not support selected crypto."));
695 // check for mhash support
696 if ( function_exists('mhash') && defined('MHASH_MD5')) {
697 $hash = base64_decode($pass_hash);
698 $salt = substr($hash, -4);
699 $new_hash = base64_encode( mhash( MHASH_MD5
, $pass_clear.$salt).$salt );
700 if( strcmp( $pass_hash, $new_hash ) == 0)
704 _("Unable to validate user's password."),
705 _("PHP mhash extension is missing or does not support selected crypto."));
709 // SHA crypted passwords
710 if( strcasecmp( cpw_ldap_password_hash($pass_clear,'sha',$msgs), "{SHA}".$pass_hash ) == 0)
714 // RIPE-MD160 crypted passwords
715 if( strcasecmp( cpw_ldap_password_hash($pass_clear,'rmd160',$msgs), "{RMD160}".$pass_hash ) == 0 )
719 // MD5 crypted passwords
720 if( strcasecmp( cpw_ldap_password_hash($pass_clear,'md5',$msgs), "{MD5}".$pass_hash ) == 0 )
724 // MD4 crypted passwords
725 if( strcasecmp( cpw_ldap_password_hash($pass_clear,'md4',$msgs), "{MD4}".$pass_hash ) == 0 )
730 if( preg_match( "/^\\\$2+/",$pass_hash ) ) { // Check if it's blowfish crypt
731 // check CRYPT_BLOWFISH here.
732 // ldap server might support it, but php can be on other OS
733 if (defined('CRYPT_BLOWFISH') && CRYPT_BLOWFISH
==1) {
734 if( crypt( $pass_clear, $pass_hash ) == $pass_hash )
738 _("Unable to validate user's password."),
739 _("Blowfish is not supported by webserver's system crypt library."));
741 } elseif( strstr( $pass_hash, '$1$' ) ) { // Check if it's md5 crypt
742 // check CRYPT_MD5 here.
743 // ldap server might support it, but php might be on other OS
744 if (defined('CRYPT_MD5') && CRYPT_MD5
==1) {
745 list(,$type,$salt,$hash) = explode('$',$pass_hash);
746 if( crypt( $pass_clear, '$1$' .$salt ) == $pass_hash )
750 _("Unable to validate user's password."),
751 _("MD5 is not supported by webserver's system crypt library."));
753 } elseif( strstr( $pass_hash, '_' ) ) { // Check if it's extended des crypt
754 // check CRYPT_EXT_DES here.
755 // ldap server might support it, but php might be on other OS
756 if (defined('CRYPT_EXT_DES') && CRYPT_EXT_DES
==1) {
757 if( crypt( $pass_clear, $pass_hash ) == $pass_hash )
761 _("Unable to validate user's password."),
762 _("Extended DES crypt is not supported by webserver's system crypt library."));
765 // it is possible that this test is useless and any crypt library supports it, but ...
766 if (defined('CRYPT_STD_DES') && CRYPT_STD_DES
==1) {
767 // plain crypt password
768 if( crypt($pass_clear, $pass_hash ) == $pass_hash )
772 _("Unable to validate user's password."),
773 _("Standard DES crypt is not supported by webserver's system crypt library."));
777 // No crypt is given, assume plaintext passwords are used
779 if( $pass_clear == $pass_hash )
783 if (! $ret && empty($msgs)) {
784 array_push($msgs,CPW_CURRENT_NOMATCH
);