xref: /dokuwiki/inc/auth.php (revision 306ca8aa54954ea2623d9e4927a2c07b9efdfea3) 
1<?php
2/**
3 * Authentication library
4 *
5 * Including this file will automatically try to login
6 * a user by calling auth_login()
7 *
8 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
9 * @author     Andreas Gohr <andi@splitbrain.org>
10 */
11
12  if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../').'/');
13  require_once(DOKU_INC.'inc/common.php');
14  require_once(DOKU_INC.'inc/io.php');
15
16  if($conf['useacl']){
17    require_once(DOKU_INC.'inc/blowfish.php');
18    require_once(DOKU_INC.'inc/mail.php');
19
20    // load the the backend auth functions and instantiate the auth object
21    if (@file_exists(DOKU_INC.'inc/auth/'.$conf['authtype'].'.class.php')) {
22      require_once(DOKU_INC.'inc/auth/basic.class.php');
23      require_once(DOKU_INC.'inc/auth/'.$conf['authtype'].'.class.php');
24
25      $auth_class = "auth_".$conf['authtype'];
26      if (class_exists($auth_class)) {
27        $auth = new $auth_class();
28        if ($auth->success == false) {
29          unset($auth);
30          msg($lang['authtempfail'], -1);
31
32          // turn acl config setting off for the rest of this page
33          $conf['useacl'] = 0;
34        }
35      } else {
36        nice_die($lang['authmodfailed']);
37      }
38    } else {
39      nice_die($lang['authmodfailed']);
40    }
41  }
42
43  if (!defined('DOKU_COOKIE')) define('DOKU_COOKIE', 'DW'.md5($conf['title']));
44
45  // some ACL level defines
46  define('AUTH_NONE',0);
47  define('AUTH_READ',1);
48  define('AUTH_EDIT',2);
49  define('AUTH_CREATE',4);
50  define('AUTH_UPLOAD',8);
51  define('AUTH_DELETE',16);
52  define('AUTH_ADMIN',255);
53
54  // do the login either by cookie or provided credentials
55  if($conf['useacl']){
56    // if no credentials were given try to use HTTP auth (for SSO)
57    if(!$_REQUEST['u'] && !$_COOKIE[DOKU_COOKIE] && $_SERVER['PHP_AUTH_USER']){
58      $_REQUEST['u'] = $_SERVER['PHP_AUTH_USER'];
59      $_REQUEST['p'] = $_SERVER['PHP_AUTH_PW'];
60    }
61
62    // external trust mechanism in place?
63    if(!is_null($auth) && $auth->canDo('external')){
64      $auth->trustExternal($_REQUEST['u'],$_REQUEST['p'],$_REQUEST['r']);
65    }else{
66      auth_login($_REQUEST['u'],$_REQUEST['p'],$_REQUEST['r']);
67    }
68
69    //load ACL into a global array
70    if(is_readable(DOKU_CONF.'acl.auth.php')){
71      $AUTH_ACL = file(DOKU_CONF.'acl.auth.php');
72    }else{
73      $AUTH_ACL = array();
74    }
75  }
76
77/**
78 * This tries to login the user based on the sent auth credentials
79 *
80 * The authentication works like this: if a username was given
81 * a new login is assumed and user/password are checked. If they
82 * are correct the password is encrypted with blowfish and stored
83 * together with the username in a cookie - the same info is stored
84 * in the session, too. Additonally a browserID is stored in the
85 * session.
86 *
87 * If no username was given the cookie is checked: if the username,
88 * crypted password and browserID match between session and cookie
89 * no further testing is done and the user is accepted
90 *
91 * If a cookie was found but no session info was availabe the
92 * blowfish encrypted password from the cookie is decrypted and
93 * together with username rechecked by calling this function again.
94 *
95 * On a successful login $_SERVER[REMOTE_USER] and $USERINFO
96 * are set.
97 *
98 * @author  Andreas Gohr <andi@splitbrain.org>
99 *
100 * @param   string  $user    Username
101 * @param   string  $pass    Cleartext Password
102 * @param   bool    $sticky  Cookie should not expire
103 * @return  bool             true on successful auth
104*/
105function auth_login($user,$pass,$sticky=false){
106  global $USERINFO;
107  global $conf;
108  global $lang;
109  global $auth;
110  $sticky ? $sticky = true : $sticky = false; //sanity check
111
112  if(isset($user)){
113    //usual login
114    if ($auth->checkPass($user,$pass)){
115      // make logininfo globally available
116      $_SERVER['REMOTE_USER'] = $user;
117      $USERINFO = $auth->getUserData($user); //FIXME move all references to session
118
119      // set cookie
120      $pass   = PMA_blowfish_encrypt($pass,auth_cookiesalt());
121      $cookie = base64_encode("$user|$sticky|$pass");
122      if($sticky) $time = time()+60*60*24*365; //one year
123      setcookie(DOKU_COOKIE,$cookie,$time,'/');
124
125      // set session
126      $_SESSION[$conf['title']]['auth']['user'] = $user;
127      $_SESSION[$conf['title']]['auth']['pass'] = $pass;
128      $_SESSION[$conf['title']]['auth']['buid'] = auth_browseruid();
129      $_SESSION[$conf['title']]['auth']['info'] = $USERINFO;
130      return true;
131    }else{
132      //invalid credentials - log off
133      msg($lang['badlogin'],-1);
134      auth_logoff();
135      return false;
136    }
137  }else{
138    // read cookie information
139    $cookie = base64_decode($_COOKIE[DOKU_COOKIE]);
140    list($user,$sticky,$pass) = split('\|',$cookie,3);
141    // get session info
142    $session = $_SESSION[$conf['title']]['auth'];
143
144    if($user && $pass){
145      // we got a cookie - see if we can trust it
146      if(isset($session) &&
147        ($session['user'] == $user) &&
148        ($session['pass'] == $pass) &&  //still crypted
149        ($session['buid'] == auth_browseruid()) ){
150        // he has session, cookie and browser right - let him in
151        $_SERVER['REMOTE_USER'] = $user;
152        $USERINFO = $session['info']; //FIXME move all references to session
153        return true;
154      }
155      // no we don't trust it yet - recheck pass
156      $pass = PMA_blowfish_decrypt($pass,auth_cookiesalt());
157      return auth_login($user,$pass,$sticky);
158    }
159  }
160  //just to be sure
161  auth_logoff();
162  return false;
163}
164
165/**
166 * Builds a pseudo UID from browser and IP data
167 *
168 * This is neither unique nor unfakable - still it adds some
169 * security. Using the first part of the IP makes sure
170 * proxy farms like AOLs are stil okay.
171 *
172 * @author  Andreas Gohr <andi@splitbrain.org>
173 *
174 * @return  string  a MD5 sum of various browser headers
175 */
176function auth_browseruid(){
177  $uid  = '';
178  $uid .= $_SERVER['HTTP_USER_AGENT'];
179  $uid .= $_SERVER['HTTP_ACCEPT_ENCODING'];
180  $uid .= $_SERVER['HTTP_ACCEPT_LANGUAGE'];
181  $uid .= $_SERVER['HTTP_ACCEPT_CHARSET'];
182  $uid .= substr($_SERVER['REMOTE_ADDR'],0,strpos($_SERVER['REMOTE_ADDR'],'.'));
183  return md5($uid);
184}
185
186/**
187 * Creates a random key to encrypt the password in cookies
188 *
189 * This function tries to read the password for encrypting
190 * cookies from $conf['metadir'].'/_htcookiesalt'
191 * if no such file is found a random key is created and
192 * and stored in this file.
193 *
194 * @author  Andreas Gohr <andi@splitbrain.org>
195 *
196 * @return  string
197 */
198function auth_cookiesalt(){
199  global $conf;
200  $file = $conf['metadir'].'/_htcookiesalt';
201  $salt = io_readFile($file);
202  if(empty($salt)){
203    $salt = uniqid(rand(),true);
204    io_saveFile($file,$salt);
205  }
206  return $salt;
207}
208
209/**
210 * This clears all authenticationdata and thus log the user
211 * off
212 *
213 * @author  Andreas Gohr <andi@splitbrain.org>
214 */
215function auth_logoff(){
216  global $conf;
217  global $USERINFO;
218  global $INFO, $ID;
219  global $auth;
220
221  if(isset($_SESSION[$conf['title']]['auth']['user']))
222    unset($_SESSION[$conf['title']]['auth']['user']);
223  if(isset($_SESSION[$conf['title']]['auth']['pass']))
224    unset($_SESSION[$conf['title']]['auth']['pass']);
225  if(isset($_SESSION[$conf['title']]['auth']['info']))
226    unset($_SESSION[$conf['title']]['auth']['info']);
227  if(isset($_SERVER['REMOTE_USER']))
228    unset($_SERVER['REMOTE_USER']);
229  $USERINFO=null; //FIXME
230  setcookie(DOKU_COOKIE,'',time()-600000,'/');
231
232  if($auth && $auth->canDo('logoff')){
233    $auth->logOff();
234  }
235}
236
237/**
238 * Convinience function for auth_aclcheck()
239 *
240 * This checks the permissions for the current user
241 *
242 * @author  Andreas Gohr <andi@splitbrain.org>
243 *
244 * @param  string  $id  page ID
245 * @return int          permission level
246 */
247function auth_quickaclcheck($id){
248  global $conf;
249  global $USERINFO;
250  # if no ACL is used always return upload rights
251  if(!$conf['useacl']) return AUTH_UPLOAD;
252  return auth_aclcheck($id,$_SERVER['REMOTE_USER'],$USERINFO['grps']);
253}
254
255/**
256 * Returns the maximum rights a user has for
257 * the given ID or its namespace
258 *
259 * @author  Andreas Gohr <andi@splitbrain.org>
260 *
261 * @param  string  $id     page ID
262 * @param  string  $user   Username
263 * @param  array   $groups Array of groups the user is in
264 * @return int             permission level
265 */
266function auth_aclcheck($id,$user,$groups){
267  global $conf;
268  global $AUTH_ACL;
269
270  # if no ACL is used always return upload rights
271  if(!$conf['useacl']) return AUTH_UPLOAD;
272
273  $user = auth_nameencode($user);
274
275  //if user is superuser return 255 (acl_admin)
276  if(auth_nameencode($conf['superuser']) == $user) { return AUTH_ADMIN; }
277
278  //make sure groups is an array
279  if(!is_array($groups)) $groups = array();
280
281  //prepend groups with @ and nameencode
282  $cnt = count($groups);
283  for($i=0; $i<$cnt; $i++){
284    $groups[$i] = '@'.auth_nameencode($groups[$i]);
285  }
286  //if user is in superuser group return 255 (acl_admin)
287  if(in_array(auth_nameencode($conf['superuser'],true), $groups)) { return AUTH_ADMIN; }
288
289  $ns    = getNS($id);
290  $perm  = -1;
291
292  if($user){
293    //add ALL group
294    $groups[] = '@ALL';
295    //add User
296    $groups[] = $user;
297    //build regexp
298    $regexp   = join('|',$groups);
299  }else{
300    $regexp = '@ALL';
301  }
302
303  //check exact match first
304  $matches = preg_grep('/^'.preg_quote($id,'/').'\s+('.$regexp.')\s+/',$AUTH_ACL);
305  if(count($matches)){
306    foreach($matches as $match){
307      $match = preg_replace('/#.*$/','',$match); //ignore comments
308      $acl   = preg_split('/\s+/',$match);
309      if($acl[2] > AUTH_DELETE) $acl[2] = AUTH_DELETE; //no admins in the ACL!
310      if($acl[2] > $perm){
311        $perm = $acl[2];
312      }
313    }
314    if($perm > -1){
315      //we had a match - return it
316      return $perm;
317    }
318  }
319
320  //still here? do the namespace checks
321  if($ns){
322    $path = $ns.':\*';
323  }else{
324    $path = '\*'; //root document
325  }
326
327  do{
328    $matches = preg_grep('/^'.$path.'\s+('.$regexp.')\s+/',$AUTH_ACL);
329    if(count($matches)){
330      foreach($matches as $match){
331        $match = preg_replace('/#.*$/','',$match); //ignore comments
332        $acl   = preg_split('/\s+/',$match);
333        if($acl[2] > AUTH_DELETE) $acl[2] = AUTH_DELETE; //no admins in the ACL!
334        if($acl[2] > $perm){
335          $perm = $acl[2];
336        }
337      }
338      //we had a match - return it
339      return $perm;
340    }
341
342    //get next higher namespace
343    $ns   = getNS($ns);
344
345    if($path != '\*'){
346      $path = $ns.':\*';
347      if($path == ':\*') $path = '\*';
348    }else{
349      //we did this already
350      //looks like there is something wrong with the ACL
351      //break here
352      msg('No ACL setup yet! Denying access to everyone.');
353      return AUTH_NONE;
354    }
355  }while(1); //this should never loop endless
356
357  //still here? return no permissions
358  return AUTH_NONE;
359}
360
361/**
362 * Encode ASCII special chars
363 *
364 * Some auth backends allow special chars in their user and groupnames
365 * The special chars are encoded with this function. Only ASCII chars
366 * are encoded UTF-8 multibyte are left as is (different from usual
367 * urlencoding!).
368 *
369 * Decoding can be done with rawurldecode
370 *
371 * @author Andreas Gohr <gohr@cosmocode.de>
372 * @see rawurldecode()
373 */
374function auth_nameencode($name,$skip_group=false){
375  if($skip_group && $name{0} =='@'){
376    return '@'.preg_replace('/([\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f])/e',
377                            "'%'.dechex(ord('\\1'))",substr($name,1));
378  }else{
379    return preg_replace('/([\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f])/e',
380                        "'%'.dechex(ord('\\1'))",$name);
381  }
382}
383
384/**
385 * Create a pronouncable password
386 *
387 * @author  Andreas Gohr <andi@splitbrain.org>
388 * @link    http://www.phpbuilder.com/annotate/message.php3?id=1014451
389 *
390 * @return string  pronouncable password
391 */
392function auth_pwgen(){
393  $pw = '';
394  $c  = 'bcdfghjklmnprstvwz'; //consonants except hard to speak ones
395  $v  = 'aeiou';              //vowels
396  $a  = $c.$v;                //both
397
398  //use two syllables...
399  for($i=0;$i < 2; $i++){
400    $pw .= $c[rand(0, strlen($c)-1)];
401    $pw .= $v[rand(0, strlen($v)-1)];
402    $pw .= $a[rand(0, strlen($a)-1)];
403  }
404  //... and add a nice number
405  $pw .= rand(10,99);
406
407  return $pw;
408}
409
410/**
411 * Sends a password to the given user
412 *
413 * @author  Andreas Gohr <andi@splitbrain.org>
414 *
415 * @return bool  true on success
416 */
417function auth_sendPassword($user,$password){
418  global $conf;
419  global $lang;
420  global $auth;
421
422  $hdrs  = '';
423  $userinfo = $auth->getUserData($user);
424
425  if(!$userinfo['mail']) return false;
426
427  $text = rawLocale('password');
428  $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
429  $text = str_replace('@FULLNAME@',$userinfo['name'],$text);
430  $text = str_replace('@LOGIN@',$user,$text);
431  $text = str_replace('@PASSWORD@',$password,$text);
432  $text = str_replace('@TITLE@',$conf['title'],$text);
433
434  return mail_send($userinfo['name'].' <'.$userinfo['mail'].'>',
435                   $lang['regpwmail'],
436                   $text,
437                   $conf['mailfrom']);
438}
439
440/**
441 * Register a new user
442 *
443 * This registers a new user - Data is read directly from $_POST
444 *
445 * @author  Andreas Gohr <andi@splitbrain.org>
446 *
447 * @return bool  true on success, false on any error
448 */
449function register(){
450  global $lang;
451  global $conf;
452  global $auth;
453
454  if(!$_POST['save']) return false;
455  if(!$auth->canDo('addUser')) return false;
456
457  //clean username
458  $_POST['login'] = preg_replace('/.*:/','',$_POST['login']);
459  $_POST['login'] = cleanID($_POST['login']);
460  //clean fullname and email
461  $_POST['fullname'] = trim(preg_replace('/[\x00-\x1f:<>&%]+/','',$_POST['fullname']));
462  $_POST['email']    = trim(preg_replace('/[\x00-\x1f:<>&%]+/','',$_POST['email']));
463
464  if( empty($_POST['login']) ||
465      empty($_POST['fullname']) ||
466      empty($_POST['email']) ){
467    msg($lang['regmissing'],-1);
468    return false;
469  }
470
471  if ($conf['autopasswd']) {
472    $pass = auth_pwgen();                // automatically generate password
473  } elseif (empty($_POST['pass']) ||
474            empty($_POST['passchk'])) {
475    msg($lang['regmissing'], -1);        // complain about missing passwords
476    return false;
477  } elseif ($_POST['pass'] != $_POST['passchk']) {
478    msg($lang['regbadpass'], -1);      // complain about misspelled passwords
479    return false;
480  } else {
481    $pass = $_POST['pass'];              // accept checked and valid password
482  }
483
484  //check mail
485  if(!mail_isvalid($_POST['email'])){
486    msg($lang['regbadmail'],-1);
487    return false;
488  }
489
490  //okay try to create the user
491  if(!$auth->createUser($_POST['login'],$pass,$_POST['fullname'],$_POST['email'])){
492    msg($lang['reguexists'],-1);
493    return false;
494  }
495
496  if (!$conf['autopasswd']) {
497    msg($lang['regsuccess2'],1);
498    notify('', 'register', '', $_POST['login'], false);
499    return true;
500  }
501
502  // autogenerated password? then send him the password
503  if (auth_sendPassword($_POST['login'],$pass)){
504    msg($lang['regsuccess'],1);
505    notify('', 'register', '', $_POST['login'], false);
506    return true;
507  }else{
508    msg($lang['regmailfail'],-1);
509    return false;
510  }
511}
512
513/**
514 * Update user profile
515 *
516 * @author    Christopher Smith <chris@jalakai.co.uk>
517 */
518function updateprofile() {
519  global $conf;
520  global $INFO;
521  global $lang;
522  global $auth;
523
524  if(!$_POST['save']) return false;
525
526  // should not be able to get here without Profile being possible...
527  if(!$auth->canDo('Profile')) {
528    msg($lang['profna'],-1);
529    return false;
530  }
531
532  if ($_POST['newpass'] != $_POST['passchk']) {
533    msg($lang['regbadpass'], -1);      // complain about misspelled passwords
534    return false;
535  }
536
537  //clean fullname and email
538  $_POST['fullname'] = trim(preg_replace('/[\x00-\x1f:<>&%]+/','',$_POST['fullname']));
539  $_POST['email']    = trim(preg_replace('/[\x00-\x1f:<>&%]+/','',$_POST['email']));
540
541  if (empty($_POST['fullname']) || empty($_POST['email'])) {
542    msg($lang['profnoempty'],-1);
543    return false;
544  }
545
546  if (!mail_isvalid($_POST['email'])){
547    msg($lang['regbadmail'],-1);
548    return false;
549  }
550
551  if ($_POST['fullname'] != $INFO['userinfo']['name']) $changes['name'] = $_POST['fullname'];
552  if ($_POST['email']    != $INFO['userinfo']['mail']) $changes['mail'] = $_POST['email'];
553  if (!empty($_POST['newpass']))  $changes['pass'] = $_POST['newpass'];
554
555  if (!count($changes)) {
556    msg($lang['profnochange'], -1);
557    return false;
558  }
559
560  if ($conf['profileconfirm']) {
561      if (!auth_verifyPassword($_POST['oldpass'],$INFO['userinfo']['pass'])) {
562      msg($lang['badlogin'],-1);
563      return false;
564    }
565  }
566
567  return $auth->modifyUser($_SERVER['REMOTE_USER'], $changes);
568}
569
570/**
571 * Send a  new password
572 *
573 * @author Benoit Chesneau <benoit@bchesneau.info>
574 * @author Chris Smith <chris@jalakai.co.uk>
575 *
576 * @return bool true on success, false on any error
577*/
578function act_resendpwd(){
579    global $lang;
580    global $conf;
581    global $auth;
582
583    if(!$_POST['save']) return false;
584    if(!actionOK('resendpwd')) return false;
585
586    // should not be able to get here without modPass being possible...
587    if(!$auth->canDo('modPass')) {
588      msg($lang['resendna'],-1);
589      return false;
590    }
591
592    if (empty($_POST['login'])) {
593      msg($lang['resendpwdmissing'], -1);
594      return false;
595    } else {
596      $user = $_POST['login'];
597    }
598
599    $userinfo = $auth->getUserData($user);
600    if(!$userinfo['mail']) {
601      msg($lang['resendpwdnouser'], -1);
602      return false;
603    }
604
605    $pass = auth_pwgen();
606    if (!$auth->modifyUser($user,array('pass' => $pass))) {
607      msg('error modifying user data',-1);
608      return false;
609    }
610
611    if (auth_sendPassword($user,$pass)) {
612      msg($lang['resendpwdsuccess'],1);
613    } else {
614      msg($lang['regmailfail'],-1);
615    }
616    return true;
617}
618
619/**
620 * Uses a regular expresion to check if a given mail address is valid
621 *
622 * May not be completly RFC conform!
623 *
624 * @link    http://www.webmasterworld.com/forum88/135.htm
625 *
626 * @param   string $email the address to check
627 * @return  bool          true if address is valid
628 */
629function isvalidemail($email){
630  return eregi("^[0-9a-z]([-_.]?[0-9a-z])*@[0-9a-z]([-.]?[0-9a-z])*\\.[a-z]{2,4}$", $email);
631}
632
633/**
634 * Encrypts a password using the given method and salt
635 *
636 * If the selected method needs a salt and none was given, a random one
637 * is chosen.
638 *
639 * The following methods are understood:
640 *
641 *   smd5  - Salted MD5 hashing
642 *   md5   - Simple MD5 hashing
643 *   sha1  - SHA1 hashing
644 *   ssha  - Salted SHA1 hashing
645 *   crypt - Unix crypt
646 *   mysql - MySQL password (old method)
647 *   my411 - MySQL 4.1.1 password
648 *
649 * @author  Andreas Gohr <andi@splitbrain.org>
650 * @return  string  The crypted password
651 */
652function auth_cryptPassword($clear,$method='',$salt=''){
653  global $conf;
654  if(empty($method)) $method = $conf['passcrypt'];
655
656  //prepare a salt
657  if(empty($salt)) $salt = md5(uniqid(rand(), true));
658
659  switch(strtolower($method)){
660    case 'smd5':
661        return crypt($clear,'$1$'.substr($salt,0,8).'$');
662    case 'md5':
663      return md5($clear);
664    case 'sha1':
665      return sha1($clear);
666    case 'ssha':
667      $salt=substr($salt,0,4);
668      return '{SSHA}'.base64_encode(pack("H*", sha1($clear.$salt)).$salt);
669    case 'crypt':
670      return crypt($clear,substr($salt,0,2));
671    case 'mysql':
672      //from http://www.php.net/mysql comment by <soren at byu dot edu>
673      $nr=0x50305735;
674      $nr2=0x12345671;
675      $add=7;
676      $charArr = preg_split("//", $clear);
677      foreach ($charArr as $char) {
678        if (($char == '') || ($char == ' ') || ($char == '\t')) continue;
679        $charVal = ord($char);
680        $nr ^= ((($nr & 63) + $add) * $charVal) + ($nr << 8);
681        $nr2 += ($nr2 << 8) ^ $nr;
682        $add += $charVal;
683      }
684      return sprintf("%08x%08x", ($nr & 0x7fffffff), ($nr2 & 0x7fffffff));
685    case 'my411':
686      return '*'.sha1(pack("H*", sha1($clear)));
687    default:
688      msg("Unsupported crypt method $method",-1);
689  }
690}
691
692/**
693 * Verifies a cleartext password against a crypted hash
694 *
695 * The method and salt used for the crypted hash is determined automatically
696 * then the clear text password is crypted using the same method. If both hashs
697 * match true is is returned else false
698 *
699 * @author  Andreas Gohr <andi@splitbrain.org>
700 * @return  bool
701 */
702function auth_verifyPassword($clear,$crypt){
703  $method='';
704  $salt='';
705
706  //determine the used method and salt
707  $len = strlen($crypt);
708  if(substr($crypt,0,3) == '$1$'){
709    $method = 'smd5';
710    $salt   = substr($crypt,3,8);
711  }elseif(substr($crypt,0,6) == '{SSHA}'){
712    $method = 'ssha';
713    $salt   = substr(base64_decode(substr($crypt, 6)),20);
714  }elseif($len == 32){
715    $method = 'md5';
716  }elseif($len == 40){
717    $method = 'sha1';
718  }elseif($len == 16){
719    $method = 'mysql';
720  }elseif($len == 41 && $crypt[0] == '*'){
721    $method = 'my411';
722  }else{
723    $method = 'crypt';
724    $salt   = substr($crypt,0,2);
725  }
726
727  //crypt and compare
728  if(auth_cryptPassword($clear,$method,$salt) === $crypt){
729    return true;
730  }
731  return false;
732}
733
734//Setup VIM: ex: et ts=2 enc=utf-8 :
735