source: documentation/trunk/packages/dokuwiki-2011-05-25a/inc/auth.php@ 30098

Last change on this file since 30098 was 25027, checked in by jmt12, 12 years ago

Adding the packages directory, and within it a configured version of dokuwiki all ready to run
File size: 30.6 KB
Line 
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 <[email protected]>
10 */
11
12if(!defined('DOKU_INC')) die('meh.');
13
14// some ACL level defines
15define('AUTH_NONE',0);
16define('AUTH_READ',1);
17define('AUTH_EDIT',2);
18define('AUTH_CREATE',4);
19define('AUTH_UPLOAD',8);
20define('AUTH_DELETE',16);
21define('AUTH_ADMIN',255);
22
23/**
24 * Initialize the auth system.
25 *
26 * This function is automatically called at the end of init.php
27 *
28 * This used to be the main() of the auth.php
29 *
30 * @todo backend loading maybe should be handled by the class autoloader
31 * @todo maybe split into multiple functions at the XXX marked positions
32 */
33function auth_setup(){
34 global $conf;
35 global $auth;
36 global $AUTH_ACL;
37 global $lang;
38 global $config_cascade;
39 $AUTH_ACL = array();
40
41 if(!$conf['useacl']) return false;
42
43 // load the the backend auth functions and instantiate the auth object XXX
44 if (@file_exists(DOKU_INC.'inc/auth/'.$conf['authtype'].'.class.php')) {
45 require_once(DOKU_INC.'inc/auth/basic.class.php');
46 require_once(DOKU_INC.'inc/auth/'.$conf['authtype'].'.class.php');
47
48 $auth_class = "auth_".$conf['authtype'];
49 if (class_exists($auth_class)) {
50 $auth = new $auth_class();
51 if ($auth->success == false) {
52 // degrade to unauthenticated user
53 unset($auth);
54 auth_logoff();
55 msg($lang['authtempfail'], -1);
56 }
57 } else {
58 nice_die($lang['authmodfailed']);
59 }
60 } else {
61 nice_die($lang['authmodfailed']);
62 }
63
64 if(!$auth) return;
65
66 // do the login either by cookie or provided credentials XXX
67 if (!isset($_REQUEST['u'])) $_REQUEST['u'] = '';
68 if (!isset($_REQUEST['p'])) $_REQUEST['p'] = '';
69 if (!isset($_REQUEST['r'])) $_REQUEST['r'] = '';
70 $_REQUEST['http_credentials'] = false;
71 if (!$conf['rememberme']) $_REQUEST['r'] = false;
72
73 // handle renamed HTTP_AUTHORIZATION variable (can happen when a fix like
74 // the one presented at
75 // http://www.besthostratings.com/articles/http-auth-php-cgi.html is used
76 // for enabling HTTP authentication with CGI/SuExec)
77 if(isset($_SERVER['REDIRECT_HTTP_AUTHORIZATION']))
78 $_SERVER['HTTP_AUTHORIZATION'] = $_SERVER['REDIRECT_HTTP_AUTHORIZATION'];
79 // streamline HTTP auth credentials (IIS/rewrite -> mod_php)
80 if(isset($_SERVER['HTTP_AUTHORIZATION'])){
81 list($_SERVER['PHP_AUTH_USER'],$_SERVER['PHP_AUTH_PW']) =
82 explode(':', base64_decode(substr($_SERVER['HTTP_AUTHORIZATION'], 6)));
83 }
84
85 // if no credentials were given try to use HTTP auth (for SSO)
86 if(empty($_REQUEST['u']) && empty($_COOKIE[DOKU_COOKIE]) && !empty($_SERVER['PHP_AUTH_USER'])){
87 $_REQUEST['u'] = $_SERVER['PHP_AUTH_USER'];
88 $_REQUEST['p'] = $_SERVER['PHP_AUTH_PW'];
89 $_REQUEST['http_credentials'] = true;
90 }
91
92 // apply cleaning
93 $_REQUEST['u'] = $auth->cleanUser($_REQUEST['u']);
94
95 if(isset($_REQUEST['authtok'])){
96 // when an authentication token is given, trust the session
97 auth_validateToken($_REQUEST['authtok']);
98 }elseif(!is_null($auth) && $auth->canDo('external')){
99 // external trust mechanism in place
100 $auth->trustExternal($_REQUEST['u'],$_REQUEST['p'],$_REQUEST['r']);
101 }else{
102 $evdata = array(
103 'user' => $_REQUEST['u'],
104 'password' => $_REQUEST['p'],
105 'sticky' => $_REQUEST['r'],
106 'silent' => $_REQUEST['http_credentials'],
107 );
108 trigger_event('AUTH_LOGIN_CHECK', $evdata, 'auth_login_wrapper');
109 }
110
111 //load ACL into a global array XXX
112 $AUTH_ACL = auth_loadACL();
113}
114
115/**
116 * Loads the ACL setup and handle user wildcards
117 *
118 * @author Andreas Gohr <[email protected]>
119 * @returns array
120 */
121function auth_loadACL(){
122 global $config_cascade;
123
124 if(!is_readable($config_cascade['acl']['default'])) return array();
125
126 $acl = file($config_cascade['acl']['default']);
127
128 //support user wildcard
129 if(isset($_SERVER['REMOTE_USER'])){
130 $len = count($acl);
131 for($i=0; $i<$len; $i++){
132 if($acl[$i]{0} == '#') continue;
133 list($id,$rest) = preg_split('/\s+/',$acl[$i],2);
134 $id = str_replace('%USER%',cleanID($_SERVER['REMOTE_USER']),$id);
135 $rest = str_replace('%USER%',auth_nameencode($_SERVER['REMOTE_USER']),$rest);
136 $acl[$i] = "$id\t$rest";
137 }
138 }
139 return $acl;
140}
141
142function auth_login_wrapper($evdata) {
143 return auth_login($evdata['user'],
144 $evdata['password'],
145 $evdata['sticky'],
146 $evdata['silent']);
147}
148
149/**
150 * This tries to login the user based on the sent auth credentials
151 *
152 * The authentication works like this: if a username was given
153 * a new login is assumed and user/password are checked. If they
154 * are correct the password is encrypted with blowfish and stored
155 * together with the username in a cookie - the same info is stored
156 * in the session, too. Additonally a browserID is stored in the
157 * session.
158 *
159 * If no username was given the cookie is checked: if the username,
160 * crypted password and browserID match between session and cookie
161 * no further testing is done and the user is accepted
162 *
163 * If a cookie was found but no session info was availabe the
164 * blowfish encrypted password from the cookie is decrypted and
165 * together with username rechecked by calling this function again.
166 *
167 * On a successful login $_SERVER[REMOTE_USER] and $USERINFO
168 * are set.
169 *
170 * @author Andreas Gohr <[email protected]>
171 *
172 * @param string $user Username
173 * @param string $pass Cleartext Password
174 * @param bool $sticky Cookie should not expire
175 * @param bool $silent Don't show error on bad auth
176 * @return bool true on successful auth
177 */
178function auth_login($user,$pass,$sticky=false,$silent=false){
179 global $USERINFO;
180 global $conf;
181 global $lang;
182 global $auth;
183 $sticky ? $sticky = true : $sticky = false; //sanity check
184
185 if (!$auth) return false;
186
187 if(!empty($user)){
188 //usual login
189 if ($auth->checkPass($user,$pass)){
190 // make logininfo globally available
191 $_SERVER['REMOTE_USER'] = $user;
192 $secret = auth_cookiesalt(!$sticky); //bind non-sticky to session
193 auth_setCookie($user,PMA_blowfish_encrypt($pass,$secret),$sticky);
194 return true;
195 }else{
196 //invalid credentials - log off
197 if(!$silent) msg($lang['badlogin'],-1);
198 auth_logoff();
199 return false;
200 }
201 }else{
202 // read cookie information
203 list($user,$sticky,$pass) = auth_getCookie();
204 if($user && $pass){
205 // we got a cookie - see if we can trust it
206
207 // get session info
208 $session = $_SESSION[DOKU_COOKIE]['auth'];
209 if(isset($session) &&
210 $auth->useSessionCache($user) &&
211 ($session['time'] >= time()-$conf['auth_security_timeout']) &&
212 ($session['user'] == $user) &&
213 ($session['pass'] == sha1($pass)) && //still crypted
214 ($session['buid'] == auth_browseruid()) ){
215
216 // he has session, cookie and browser right - let him in
217 $_SERVER['REMOTE_USER'] = $user;
218 $USERINFO = $session['info']; //FIXME move all references to session
219 return true;
220 }
221 // no we don't trust it yet - recheck pass but silent
222 $secret = auth_cookiesalt(!$sticky); //bind non-sticky to session
223 $pass = PMA_blowfish_decrypt($pass,$secret);
224 return auth_login($user,$pass,$sticky,true);
225 }
226 }
227 //just to be sure
228 auth_logoff(true);
229 return false;
230}
231
232/**
233 * Checks if a given authentication token was stored in the session
234 *
235 * Will setup authentication data using data from the session if the
236 * token is correct. Will exit with a 401 Status if not.
237 *
238 * @author Andreas Gohr <[email protected]>
239 * @param string $token The authentication token
240 * @return boolean true (or will exit on failure)
241 */
242function auth_validateToken($token){
243 if(!$token || $token != $_SESSION[DOKU_COOKIE]['auth']['token']){
244 // bad token
245 header("HTTP/1.0 401 Unauthorized");
246 print 'Invalid auth token - maybe the session timed out';
247 unset($_SESSION[DOKU_COOKIE]['auth']['token']); // no second chance
248 exit;
249 }
250 // still here? trust the session data
251 global $USERINFO;
252 $_SERVER['REMOTE_USER'] = $_SESSION[DOKU_COOKIE]['auth']['user'];
253 $USERINFO = $_SESSION[DOKU_COOKIE]['auth']['info'];
254 return true;
255}
256
257/**
258 * Create an auth token and store it in the session
259 *
260 * NOTE: this is completely unrelated to the getSecurityToken() function
261 *
262 * @author Andreas Gohr <[email protected]>
263 * @return string The auth token
264 */
265function auth_createToken(){
266 $token = md5(mt_rand());
267 @session_start(); // reopen the session if needed
268 $_SESSION[DOKU_COOKIE]['auth']['token'] = $token;
269 session_write_close();
270 return $token;
271}
272
273/**
274 * Builds a pseudo UID from browser and IP data
275 *
276 * This is neither unique nor unfakable - still it adds some
277 * security. Using the first part of the IP makes sure
278 * proxy farms like AOLs are stil okay.
279 *
280 * @author Andreas Gohr <[email protected]>
281 *
282 * @return string a MD5 sum of various browser headers
283 */
284function auth_browseruid(){
285 $ip = clientIP(true);
286 $uid = '';
287 $uid .= $_SERVER['HTTP_USER_AGENT'];
288 $uid .= $_SERVER['HTTP_ACCEPT_ENCODING'];
289 $uid .= $_SERVER['HTTP_ACCEPT_LANGUAGE'];
290 $uid .= $_SERVER['HTTP_ACCEPT_CHARSET'];
291 $uid .= substr($ip,0,strpos($ip,'.'));
292 return md5($uid);
293}
294
295/**
296 * Creates a random key to encrypt the password in cookies
297 *
298 * This function tries to read the password for encrypting
299 * cookies from $conf['metadir'].'/_htcookiesalt'
300 * if no such file is found a random key is created and
301 * and stored in this file.
302 *
303 * @author Andreas Gohr <[email protected]>
304 * @param bool $addsession if true, the sessionid is added to the salt
305 * @return string
306 */
307function auth_cookiesalt($addsession=false){
308 global $conf;
309 $file = $conf['metadir'].'/_htcookiesalt';
310 $salt = io_readFile($file);
311 if(empty($salt)){
312 $salt = uniqid(rand(),true);
313 io_saveFile($file,$salt);
314 }
315 if($addsession){
316 $salt .= session_id();
317 }
318 return $salt;
319}
320
321/**
322 * Log out the current user
323 *
324 * This clears all authentication data and thus log the user
325 * off. It also clears session data.
326 *
327 * @author Andreas Gohr <[email protected]>
328 * @param bool $keepbc - when true, the breadcrumb data is not cleared
329 */
330function auth_logoff($keepbc=false){
331 global $conf;
332 global $USERINFO;
333 global $INFO, $ID;
334 global $auth;
335
336 // make sure the session is writable (it usually is)
337 @session_start();
338
339 if(isset($_SESSION[DOKU_COOKIE]['auth']['user']))
340 unset($_SESSION[DOKU_COOKIE]['auth']['user']);
341 if(isset($_SESSION[DOKU_COOKIE]['auth']['pass']))
342 unset($_SESSION[DOKU_COOKIE]['auth']['pass']);
343 if(isset($_SESSION[DOKU_COOKIE]['auth']['info']))
344 unset($_SESSION[DOKU_COOKIE]['auth']['info']);
345 if(!$keepbc && isset($_SESSION[DOKU_COOKIE]['bc']))
346 unset($_SESSION[DOKU_COOKIE]['bc']);
347 if(isset($_SERVER['REMOTE_USER']))
348 unset($_SERVER['REMOTE_USER']);
349 $USERINFO=null; //FIXME
350
351 if (version_compare(PHP_VERSION, '5.2.0', '>')) {
352 setcookie(DOKU_COOKIE,'',time()-600000,DOKU_REL,'',($conf['securecookie'] && is_ssl()),true);
353 }else{
354 setcookie(DOKU_COOKIE,'',time()-600000,DOKU_REL,'',($conf['securecookie'] && is_ssl()));
355 }
356
357 if($auth) $auth->logOff();
358}
359
360/**
361 * Check if a user is a manager
362 *
363 * Should usually be called without any parameters to check the current
364 * user.
365 *
366 * The info is available through $INFO['ismanager'], too
367 *
368 * @author Andreas Gohr <[email protected]>
369 * @see auth_isadmin
370 * @param string user - Username
371 * @param array groups - List of groups the user is in
372 * @param bool adminonly - when true checks if user is admin
373 */
374function auth_ismanager($user=null,$groups=null,$adminonly=false){
375 global $conf;
376 global $USERINFO;
377 global $auth;
378
379 if (!$auth) return false;
380 if(is_null($user)) {
381 if (!isset($_SERVER['REMOTE_USER'])) {
382 return false;
383 } else {
384 $user = $_SERVER['REMOTE_USER'];
385 }
386 }
387 if(is_null($groups)){
388 $groups = (array) $USERINFO['grps'];
389 }
390
391 // check superuser match
392 if(auth_isMember($conf['superuser'],$user, $groups)) return true;
393 if($adminonly) return false;
394 // check managers
395 if(auth_isMember($conf['manager'],$user, $groups)) return true;
396
397 return false;
398}
399
400/**
401 * Check if a user is admin
402 *
403 * Alias to auth_ismanager with adminonly=true
404 *
405 * The info is available through $INFO['isadmin'], too
406 *
407 * @author Andreas Gohr <[email protected]>
408 * @see auth_ismanager
409 */
410function auth_isadmin($user=null,$groups=null){
411 return auth_ismanager($user,$groups,true);
412}
413
414
415/**
416 * Match a user and his groups against a comma separated list of
417 * users and groups to determine membership status
418 *
419 * Note: all input should NOT be nameencoded.
420 *
421 * @param $memberlist string commaseparated list of allowed users and groups
422 * @param $user string user to match against
423 * @param $groups array groups the user is member of
424 * @returns bool true for membership acknowledged
425 */
426function auth_isMember($memberlist,$user,array $groups){
427 global $auth;
428 if (!$auth) return false;
429
430 // clean user and groups
431 if(!$auth->isCaseSensitive()){
432 $user = utf8_strtolower($user);
433 $groups = array_map('utf8_strtolower',$groups);
434 }
435 $user = $auth->cleanUser($user);
436 $groups = array_map(array($auth,'cleanGroup'),$groups);
437
438 // extract the memberlist
439 $members = explode(',',$memberlist);
440 $members = array_map('trim',$members);
441 $members = array_unique($members);
442 $members = array_filter($members);
443
444 // compare cleaned values
445 foreach($members as $member){
446 if(!$auth->isCaseSensitive()) $member = utf8_strtolower($member);
447 if($member[0] == '@'){
448 $member = $auth->cleanGroup(substr($member,1));
449 if(in_array($member, $groups)) return true;
450 }else{
451 $member = $auth->cleanUser($member);
452 if($member == $user) return true;
453 }
454 }
455
456 // still here? not a member!
457 return false;
458}
459
460/**
461 * Convinience function for auth_aclcheck()
462 *
463 * This checks the permissions for the current user
464 *
465 * @author Andreas Gohr <[email protected]>
466 *
467 * @param string $id page ID (needs to be resolved and cleaned)
468 * @return int permission level
469 */
470function auth_quickaclcheck($id){
471 global $conf;
472 global $USERINFO;
473 # if no ACL is used always return upload rights
474 if(!$conf['useacl']) return AUTH_UPLOAD;
475 return auth_aclcheck($id,$_SERVER['REMOTE_USER'],$USERINFO['grps']);
476}
477
478/**
479 * Returns the maximum rights a user has for
480 * the given ID or its namespace
481 *
482 * @author Andreas Gohr <[email protected]>
483 *
484 * @param string $id page ID (needs to be resolved and cleaned)
485 * @param string $user Username
486 * @param array $groups Array of groups the user is in
487 * @return int permission level
488 */
489function auth_aclcheck($id,$user,$groups){
490 global $conf;
491 global $AUTH_ACL;
492 global $auth;
493
494 // if no ACL is used always return upload rights
495 if(!$conf['useacl']) return AUTH_UPLOAD;
496 if (!$auth) return AUTH_NONE;
497
498 //make sure groups is an array
499 if(!is_array($groups)) $groups = array();
500
501 //if user is superuser or in superusergroup return 255 (acl_admin)
502 if(auth_isadmin($user,$groups)) { return AUTH_ADMIN; }
503
504 $ci = '';
505 if(!$auth->isCaseSensitive()) $ci = 'ui';
506
507 $user = $auth->cleanUser($user);
508 $groups = array_map(array($auth,'cleanGroup'),(array)$groups);
509 $user = auth_nameencode($user);
510
511 //prepend groups with @ and nameencode
512 $cnt = count($groups);
513 for($i=0; $i<$cnt; $i++){
514 $groups[$i] = '@'.auth_nameencode($groups[$i]);
515 }
516
517 $ns = getNS($id);
518 $perm = -1;
519
520 if($user || count($groups)){
521 //add ALL group
522 $groups[] = '@ALL';
523 //add User
524 if($user) $groups[] = $user;
525 //build regexp
526 $regexp = join('|',$groups);
527 }else{
528 $regexp = '@ALL';
529 }
530
531 //check exact match first
532 $matches = preg_grep('/^'.preg_quote($id,'/').'\s+('.$regexp.')\s+/'.$ci,$AUTH_ACL);
533 if(count($matches)){
534 foreach($matches as $match){
535 $match = preg_replace('/#.*$/','',$match); //ignore comments
536 $acl = preg_split('/\s+/',$match);
537 if($acl[2] > AUTH_DELETE) $acl[2] = AUTH_DELETE; //no admins in the ACL!
538 if($acl[2] > $perm){
539 $perm = $acl[2];
540 }
541 }
542 if($perm > -1){
543 //we had a match - return it
544 return $perm;
545 }
546 }
547
548 //still here? do the namespace checks
549 if($ns){
550 $path = $ns.':*';
551 }else{
552 $path = '*'; //root document
553 }
554
555 do{
556 $matches = preg_grep('/^'.preg_quote($path,'/').'\s+('.$regexp.')\s+/'.$ci,$AUTH_ACL);
557 if(count($matches)){
558 foreach($matches as $match){
559 $match = preg_replace('/#.*$/','',$match); //ignore comments
560 $acl = preg_split('/\s+/',$match);
561 if($acl[2] > AUTH_DELETE) $acl[2] = AUTH_DELETE; //no admins in the ACL!
562 if($acl[2] > $perm){
563 $perm = $acl[2];
564 }
565 }
566 //we had a match - return it
567 return $perm;
568 }
569
570 //get next higher namespace
571 $ns = getNS($ns);
572
573 if($path != '*'){
574 $path = $ns.':*';
575 if($path == ':*') $path = '*';
576 }else{
577 //we did this already
578 //looks like there is something wrong with the ACL
579 //break here
580 msg('No ACL setup yet! Denying access to everyone.');
581 return AUTH_NONE;
582 }
583 }while(1); //this should never loop endless
584
585 //still here? return no permissions
586 return AUTH_NONE;
587}
588
589/**
590 * Encode ASCII special chars
591 *
592 * Some auth backends allow special chars in their user and groupnames
593 * The special chars are encoded with this function. Only ASCII chars
594 * are encoded UTF-8 multibyte are left as is (different from usual
595 * urlencoding!).
596 *
597 * Decoding can be done with rawurldecode
598 *
599 * @author Andreas Gohr <[email protected]>
600 * @see rawurldecode()
601 */
602function auth_nameencode($name,$skip_group=false){
603 global $cache_authname;
604 $cache =& $cache_authname;
605 $name = (string) $name;
606
607 // never encode wildcard FS#1955
608 if($name == '%USER%') return $name;
609
610 if (!isset($cache[$name][$skip_group])) {
611 if($skip_group && $name{0} =='@'){
612 $cache[$name][$skip_group] = '@'.preg_replace('/([\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f])/e',
613 "'%'.dechex(ord(substr('\\1',-1)))",substr($name,1));
614 }else{
615 $cache[$name][$skip_group] = preg_replace('/([\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f])/e',
616 "'%'.dechex(ord(substr('\\1',-1)))",$name);
617 }
618 }
619
620 return $cache[$name][$skip_group];
621}
622
623/**
624 * Create a pronouncable password
625 *
626 * @author Andreas Gohr <[email protected]>
627 * @link http://www.phpbuilder.com/annotate/message.php3?id=1014451
628 *
629 * @return string pronouncable password
630 */
631function auth_pwgen(){
632 $pw = '';
633 $c = 'bcdfghjklmnprstvwz'; //consonants except hard to speak ones
634 $v = 'aeiou'; //vowels
635 $a = $c.$v; //both
636
637 //use two syllables...
638 for($i=0;$i < 2; $i++){
639 $pw .= $c[rand(0, strlen($c)-1)];
640 $pw .= $v[rand(0, strlen($v)-1)];
641 $pw .= $a[rand(0, strlen($a)-1)];
642 }
643 //... and add a nice number
644 $pw .= rand(10,99);
645
646 return $pw;
647}
648
649/**
650 * Sends a password to the given user
651 *
652 * @author Andreas Gohr <[email protected]>
653 *
654 * @return bool true on success
655 */
656function auth_sendPassword($user,$password){
657 global $conf;
658 global $lang;
659 global $auth;
660 if (!$auth) return false;
661
662 $hdrs = '';
663 $user = $auth->cleanUser($user);
664 $userinfo = $auth->getUserData($user);
665
666 if(!$userinfo['mail']) return false;
667
668 $text = rawLocale('password');
669 $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
670 $text = str_replace('@FULLNAME@',$userinfo['name'],$text);
671 $text = str_replace('@LOGIN@',$user,$text);
672 $text = str_replace('@PASSWORD@',$password,$text);
673 $text = str_replace('@TITLE@',$conf['title'],$text);
674
675 return mail_send($userinfo['name'].' <'.$userinfo['mail'].'>',
676 $lang['regpwmail'],
677 $text,
678 $conf['mailfrom']);
679}
680
681/**
682 * Register a new user
683 *
684 * This registers a new user - Data is read directly from $_POST
685 *
686 * @author Andreas Gohr <[email protected]>
687 *
688 * @return bool true on success, false on any error
689 */
690function register(){
691 global $lang;
692 global $conf;
693 global $auth;
694
695 if(!$_POST['save']) return false;
696 if(!actionOK('register')) return false;
697
698 //clean username
699 $_POST['login'] = trim($auth->cleanUser($_POST['login']));
700
701 //clean fullname and email
702 $_POST['fullname'] = trim(preg_replace('/[\x00-\x1f:<>&%,;]+/','',$_POST['fullname']));
703 $_POST['email'] = trim(preg_replace('/[\x00-\x1f:<>&%,;]+/','',$_POST['email']));
704
705 if( empty($_POST['login']) ||
706 empty($_POST['fullname']) ||
707 empty($_POST['email']) ){
708 msg($lang['regmissing'],-1);
709 return false;
710 }
711
712 if ($conf['autopasswd']) {
713 $pass = auth_pwgen(); // automatically generate password
714 } elseif (empty($_POST['pass']) ||
715 empty($_POST['passchk'])) {
716 msg($lang['regmissing'], -1); // complain about missing passwords
717 return false;
718 } elseif ($_POST['pass'] != $_POST['passchk']) {
719 msg($lang['regbadpass'], -1); // complain about misspelled passwords
720 return false;
721 } else {
722 $pass = $_POST['pass']; // accept checked and valid password
723 }
724
725 //check mail
726 if(!mail_isvalid($_POST['email'])){
727 msg($lang['regbadmail'],-1);
728 return false;
729 }
730
731 //okay try to create the user
732 if(!$auth->triggerUserMod('create', array($_POST['login'],$pass,$_POST['fullname'],$_POST['email']))){
733 msg($lang['reguexists'],-1);
734 return false;
735 }
736
737 // create substitutions for use in notification email
738 $substitutions = array(
739 'NEWUSER' => $_POST['login'],
740 'NEWNAME' => $_POST['fullname'],
741 'NEWEMAIL' => $_POST['email'],
742 );
743
744 if (!$conf['autopasswd']) {
745 msg($lang['regsuccess2'],1);
746 notify('', 'register', '', $_POST['login'], false, $substitutions);
747 return true;
748 }
749
750 // autogenerated password? then send him the password
751 if (auth_sendPassword($_POST['login'],$pass)){
752 msg($lang['regsuccess'],1);
753 notify('', 'register', '', $_POST['login'], false, $substitutions);
754 return true;
755 }else{
756 msg($lang['regmailfail'],-1);
757 return false;
758 }
759}
760
761/**
762 * Update user profile
763 *
764 * @author Christopher Smith <[email protected]>
765 */
766function updateprofile() {
767 global $conf;
768 global $INFO;
769 global $lang;
770 global $auth;
771
772 if(empty($_POST['save'])) return false;
773 if(!checkSecurityToken()) return false;
774
775 if(!actionOK('profile')) {
776 msg($lang['profna'],-1);
777 return false;
778 }
779
780 if ($_POST['newpass'] != $_POST['passchk']) {
781 msg($lang['regbadpass'], -1); // complain about misspelled passwords
782 return false;
783 }
784
785 //clean fullname and email
786 $_POST['fullname'] = trim(preg_replace('/[\x00-\x1f:<>&%,;]+/','',$_POST['fullname']));
787 $_POST['email'] = trim(preg_replace('/[\x00-\x1f:<>&%,;]+/','',$_POST['email']));
788
789 if ((empty($_POST['fullname']) && $auth->canDo('modName')) ||
790 (empty($_POST['email']) && $auth->canDo('modMail'))) {
791 msg($lang['profnoempty'],-1);
792 return false;
793 }
794
795 if (!mail_isvalid($_POST['email']) && $auth->canDo('modMail')){
796 msg($lang['regbadmail'],-1);
797 return false;
798 }
799
800 if ($_POST['fullname'] != $INFO['userinfo']['name'] && $auth->canDo('modName')) $changes['name'] = $_POST['fullname'];
801 if ($_POST['email'] != $INFO['userinfo']['mail'] && $auth->canDo('modMail')) $changes['mail'] = $_POST['email'];
802 if (!empty($_POST['newpass']) && $auth->canDo('modPass')) $changes['pass'] = $_POST['newpass'];
803
804 if (!count($changes)) {
805 msg($lang['profnochange'], -1);
806 return false;
807 }
808
809 if ($conf['profileconfirm']) {
810 if (!$auth->checkPass($_SERVER['REMOTE_USER'], $_POST['oldpass'])) {
811 msg($lang['badlogin'],-1);
812 return false;
813 }
814 }
815
816 if ($result = $auth->triggerUserMod('modify', array($_SERVER['REMOTE_USER'], $changes))) {
817 // update cookie and session with the changed data
818 if ($changes['pass']){
819 list($user,$sticky,$pass) = auth_getCookie();
820 $pass = PMA_blowfish_encrypt($changes['pass'],auth_cookiesalt(!$sticky));
821 auth_setCookie($_SERVER['REMOTE_USER'],$pass,(bool)$sticky);
822 }
823 return true;
824 }
825}
826
827/**
828 * Send a new password
829 *
830 * This function handles both phases of the password reset:
831 *
832 * - handling the first request of password reset
833 * - validating the password reset auth token
834 *
835 * @author Benoit Chesneau <[email protected]>
836 * @author Chris Smith <[email protected]>
837 * @author Andreas Gohr <[email protected]>
838 *
839 * @return bool true on success, false on any error
840 */
841function act_resendpwd(){
842 global $lang;
843 global $conf;
844 global $auth;
845
846 if(!actionOK('resendpwd')) {
847 msg($lang['resendna'],-1);
848 return false;
849 }
850
851 $token = preg_replace('/[^a-f0-9]+/','',$_REQUEST['pwauth']);
852
853 if($token){
854 // we're in token phase
855
856 $tfile = $conf['cachedir'].'/'.$token{0}.'/'.$token.'.pwauth';
857 if(!@file_exists($tfile)){
858 msg($lang['resendpwdbadauth'],-1);
859 return false;
860 }
861 $user = io_readfile($tfile);
862 @unlink($tfile);
863 $userinfo = $auth->getUserData($user);
864 if(!$userinfo['mail']) {
865 msg($lang['resendpwdnouser'], -1);
866 return false;
867 }
868
869 $pass = auth_pwgen();
870 if (!$auth->triggerUserMod('modify', array($user,array('pass' => $pass)))) {
871 msg('error modifying user data',-1);
872 return false;
873 }
874
875 if (auth_sendPassword($user,$pass)) {
876 msg($lang['resendpwdsuccess'],1);
877 } else {
878 msg($lang['regmailfail'],-1);
879 }
880 return true;
881
882 } else {
883 // we're in request phase
884
885 if(!$_POST['save']) return false;
886
887 if (empty($_POST['login'])) {
888 msg($lang['resendpwdmissing'], -1);
889 return false;
890 } else {
891 $user = trim($auth->cleanUser($_POST['login']));
892 }
893
894 $userinfo = $auth->getUserData($user);
895 if(!$userinfo['mail']) {
896 msg($lang['resendpwdnouser'], -1);
897 return false;
898 }
899
900 // generate auth token
901 $token = md5(auth_cookiesalt().$user); //secret but user based
902 $tfile = $conf['cachedir'].'/'.$token{0}.'/'.$token.'.pwauth';
903 $url = wl('',array('do'=>'resendpwd','pwauth'=>$token),true,'&');
904
905 io_saveFile($tfile,$user);
906
907 $text = rawLocale('pwconfirm');
908 $text = str_replace('@DOKUWIKIURL@',DOKU_URL,$text);
909 $text = str_replace('@FULLNAME@',$userinfo['name'],$text);
910 $text = str_replace('@LOGIN@',$user,$text);
911 $text = str_replace('@TITLE@',$conf['title'],$text);
912 $text = str_replace('@CONFIRM@',$url,$text);
913
914 if(mail_send($userinfo['name'].' <'.$userinfo['mail'].'>',
915 $lang['regpwmail'],
916 $text,
917 $conf['mailfrom'])){
918 msg($lang['resendpwdconfirm'],1);
919 }else{
920 msg($lang['regmailfail'],-1);
921 }
922 return true;
923 }
924
925 return false; // never reached
926}
927
928/**
929 * Encrypts a password using the given method and salt
930 *
931 * If the selected method needs a salt and none was given, a random one
932 * is chosen.
933 *
934 * @author Andreas Gohr <[email protected]>
935 * @return string The crypted password
936 */
937function auth_cryptPassword($clear,$method='',$salt=null){
938 global $conf;
939 if(empty($method)) $method = $conf['passcrypt'];
940
941 $pass = new PassHash();
942 $call = 'hash_'.$method;
943
944 if(!method_exists($pass,$call)){
945 msg("Unsupported crypt method $method",-1);
946 return false;
947 }
948
949 return $pass->$call($clear,$salt);
950}
951
952/**
953 * Verifies a cleartext password against a crypted hash
954 *
955 * @author Andreas Gohr <[email protected]>
956 * @return bool
957 */
958function auth_verifyPassword($clear,$crypt){
959 $pass = new PassHash();
960 return $pass->verify_hash($clear,$crypt);
961}
962
963/**
964 * Set the authentication cookie and add user identification data to the session
965 *
966 * @param string $user username
967 * @param string $pass encrypted password
968 * @param bool $sticky whether or not the cookie will last beyond the session
969 */
970function auth_setCookie($user,$pass,$sticky) {
971 global $conf;
972 global $auth;
973 global $USERINFO;
974
975 if (!$auth) return false;
976 $USERINFO = $auth->getUserData($user);
977
978 // set cookie
979 $cookie = base64_encode($user).'|'.((int) $sticky).'|'.base64_encode($pass);
980 $time = $sticky ? (time()+60*60*24*365) : 0; //one year
981 if (version_compare(PHP_VERSION, '5.2.0', '>')) {
982 setcookie(DOKU_COOKIE,$cookie,$time,DOKU_REL,'',($conf['securecookie'] && is_ssl()),true);
983 }else{
984 setcookie(DOKU_COOKIE,$cookie,$time,DOKU_REL,'',($conf['securecookie'] && is_ssl()));
985 }
986 // set session
987 $_SESSION[DOKU_COOKIE]['auth']['user'] = $user;
988 $_SESSION[DOKU_COOKIE]['auth']['pass'] = sha1($pass);
989 $_SESSION[DOKU_COOKIE]['auth']['buid'] = auth_browseruid();
990 $_SESSION[DOKU_COOKIE]['auth']['info'] = $USERINFO;
991 $_SESSION[DOKU_COOKIE]['auth']['time'] = time();
992}
993
994/**
995 * Returns the user, (encrypted) password and sticky bit from cookie
996 *
997 * @returns array
998 */
999function auth_getCookie(){
1000 if (!isset($_COOKIE[DOKU_COOKIE])) {
1001 return array(null, null, null);
1002 }
1003 list($user,$sticky,$pass) = explode('|',$_COOKIE[DOKU_COOKIE],3);
1004 $sticky = (bool) $sticky;
1005 $pass = base64_decode($pass);
1006 $user = base64_decode($user);
1007 return array($user,$sticky,$pass);
1008}
1009
1010//Setup VIM: ex: et ts=2 :
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