includes/User.php

   1 <?php
   2 /**
   3  * See user.doc
   4  *
   5  * @package MediaWiki
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'WatchedItem.php' );
  12 require_once( 'Group.php' );
  13
  14 # Number of characters in user_token field
  15 define( 'USER_TOKEN_LENGTH', 32 );
  16
  17 /**
  18  *
  19  * @package MediaWiki
  20  */
  21 class User {
  22         /**#@+
  23          * @access private
  24          */
  25         var $mId, $mName, $mPassword, $mEmail, $mNewtalk;
  26         var $mEmailAuthenticationtimestamp;
  27         var $mRights, $mOptions;
  28         var $mDataLoaded, $mNewpassword;
  29         var $mSkin;
  30         var $mBlockedby, $mBlockreason;
  31         var $mTouched;
  32         var $mToken;
  33         var $mRealName;
  34         var $mHash;
  35         /** Array of group id the user belong to */
  36         var $mGroups;
  37         /**#@-*/
  38
  39         /** Construct using User:loadDefaults() */
  40         function User() {
  41                 $this->loadDefaults();
  42         }
  43
  44         /**
  45          * Static factory method
  46          * @static
  47          * @param string $name Username, validated by Title:newFromText()
  48          */
  49         function newFromName( $name ) {
  50                 $u = new User();
  51
  52                 # Clean up name according to title rules
  53
  54                 $t = Title::newFromText( $name );
  55                 if( is_null( $t ) ) {
  56                         return NULL;
  57                 } else {
  58                         $u->setName( $t->getText() );
  59                         $u->setId( $u->idFromName( $t->getText() ) );
  60                         return $u;
  61                 }
  62         }
  63
  64         /**
  65          * Get username given an id.
  66          * @param integer $id Database user id
  67          * @return string Nickname of a user
  68          * @static
  69          */
  70         function whoIs( $id )   {
  71                 $dbr =& wfGetDB( DB_SLAVE );
  72                 return $dbr->selectField( 'user', 'user_name', array( 'user_id' => $id ) );
  73         }
  74
  75         /**
  76          * Get real username given an id.
  77          * @param integer $id Database user id
  78          * @return string Realname of a user
  79          * @static
  80          */
  81         function whoIsReal( $id )       {
  82                 $dbr =& wfGetDB( DB_SLAVE );
  83                 return $dbr->selectField( 'user', 'user_real_name', array( 'user_id' => $id ) );
  84         }
  85
  86         /**
  87          * Get database id given a user name
  88          * @param string $name Nickname of a user
  89          * @return integer|null Database user id (null: if non existent
  90          * @static
  91          */
  92         function idFromName( $name ) {
  93                 $fname = "User::idFromName";
  94
  95                 $nt = Title::newFromText( $name );
  96                 if( is_null( $nt ) ) {
  97                         # Illegal name
  98                         return null;
  99                 }
 100                 $dbr =& wfGetDB( DB_SLAVE );
 101                 $s = $dbr->selectRow( 'user', array( 'user_id' ), array( 'user_name' => $nt->getText() ), $fname );
 102
 103                 if ( $s === false ) {
 104                         return 0;
 105                 } else {
 106                         return $s->user_id;
 107                 }
 108         }
 109
 110         /**
 111          * does the string match an anonymous user IP address?
 112          * @param string $name Nickname of a user
 113          * @static
 114          */
 115         function isIP( $name ) {
 116                 return preg_match("/^\d{1,3}\.\d{1,3}.\d{1,3}\.\d{1,3}$/",$name);
 117         }
 118
 119         /**
 120          * does the string match roughly an email address ?
 121          * @param string $addr email address
 122          * @static
 123          */
 124         function isValidEmailAddr ( $addr ) {
 125                 return preg_match( '/^([a-z0-9_.-]+([a-z0-9_.-]+)*\@[a-z0-9_-]+([a-z0-9_.-]+)*([a-z.]{2,})+)$/', strtolower($addr));
 126         }
 127
 128         /**
 129          * probably return a random password
 130          * @return string probably a random password
 131          * @static
 132          * @todo Check what is doing really [AV]
 133          */
 134         function randomPassword() {
 135                 $pwchars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz';
 136                 $l = strlen( $pwchars ) - 1;
 137
 138                 $np = $pwchars{mt_rand( 0, $l )} . $pwchars{mt_rand( 0, $l )} .
 139                   $pwchars{mt_rand( 0, $l )} . chr( mt_rand(48, 57) ) .
 140                   $pwchars{mt_rand( 0, $l )} . $pwchars{mt_rand( 0, $l )} .
 141                   $pwchars{mt_rand( 0, $l )};
 142                 return $np;
 143         }
 144
 145         /**
 146          * Set properties to default
 147          * Used at construction. It will load per language default settings only
 148          * if we have an available language object.
 149          */
 150         function loadDefaults() {
 151                 static $n=0;
 152                 $n++;
 153                 $fname = 'User::loadDefaults' . $n;
 154                 wfProfileIn( $fname );
 155
 156                 global $wgContLang, $wgIP;
 157                 global $wgNamespacesToBeSearchedDefault;
 158
 159                 $this->mId = 0;
 160                 $this->mNewtalk = -1;
 161                 $this->mName = $wgIP;
 162                 $this->mRealName = $this->mEmail = '';
 163                 $this->mEmailAuthenticationtimestamp = 0;
 164                 $this->mPassword = $this->mNewpassword = '';
 165                 $this->mRights = array();
 166                 $this->mGroups = array();
 167                 // Getting user defaults only if we have an available language
 168                 if( isset( $wgContLang ) ) {
 169                         $this->loadDefaultFromLanguage();
 170                 }
 171
 172                 foreach( $wgNamespacesToBeSearchedDefault as $nsnum => $val ) {
 173                         $this->mOptions['searchNs'.$nsnum] = $val;
 174                 }
 175                 unset( $this->mSkin );
 176                 $this->mDataLoaded = false;
 177                 $this->mBlockedby = -1; # Unset
 178                 $this->mTouched = '0'; # Allow any pages to be cached
 179                 $this->setToken(); # Random
 180                 $this->mHash = false;
 181                 wfProfileOut( $fname );
 182         }
 183
 184         /**
 185          * Used to load user options from a language.
 186          * This is not in loadDefault() cause we sometime create user before having
 187          * a language object.
 188          */
 189         function loadDefaultFromLanguage(){
 190                 $this->mOptions = User::getDefaultOptions();
 191         }
 192
 193         /**
 194          * Combine the language default options with any site-specific options
 195          * and add the default language variants.
 196          *
 197          * @return array
 198          * @static
 199          * @access private
 200          */
 201         function getDefaultOptions() {
 202                 /**
 203                  * Site defaults will override the global/language defaults
 204                  */
 205                 global $wgContLang, $wgDefaultUserOptions;
 206                 $defOpt = $wgDefaultUserOptions + $wgContLang->getDefaultUserOptions();
 207
 208                 /**
 209                  * default language setting
 210                  */
 211                 $variant = $wgContLang->getPreferredVariant();
 212                 $defOpt['variant'] = $variant;
 213                 $defOpt['language'] = $variant;
 214
 215                 return $defOpt;
 216         }
 217
 218         /**
 219          * Get a given default option value.
 220          *
 221          * @param string $opt
 222          * @return string
 223          * @static
 224          * @access public
 225          */
 226         function getDefaultOption( $opt ) {
 227                 $defOpts = User::getDefaultOptions();
 228                 if( isset( $defOpts[$opt] ) ) {
 229                         return $defOpts[$opt];
 230                 } else {
 231                         return '';
 232                 }
 233         }
 234
 235         /**
 236          * Get blocking information
 237          * @access private
 238          */
 239         function getBlockedStatus() {
 240                 global $wgIP, $wgBlockCache, $wgProxyList;
 241
 242                 if ( -1 != $this->mBlockedby ) { return; }
 243
 244                 $this->mBlockedby = 0;
 245
 246                 # User blocking
 247                 if ( $this->mId ) {
 248                         $block = new Block();
 249                         if ( $block->load( $wgIP , $this->mId ) ) {
 250                                 $this->mBlockedby = $block->mBy;
 251                                 $this->mBlockreason = $block->mReason;
 252                         }
 253                 }
 254
 255                 # IP/range blocking
 256                 if ( !$this->mBlockedby ) {
 257                         $block = $wgBlockCache->get( $wgIP );
 258                         if ( $block !== false ) {
 259                                 $this->mBlockedby = $block->mBy;
 260                                 $this->mBlockreason = $block->mReason;
 261                         }
 262                 }
 263
 264                 # Proxy blocking
 265                 if ( !$this->mBlockedby ) {
 266                         if ( array_key_exists( $wgIP, $wgProxyList ) ) {
 267                                 $this->mBlockreason = wfMsg( 'proxyblockreason' );
 268                                 $this->mBlockedby = "Proxy blocker";
 269                         }
 270                 }
 271         }
 272
 273         /**
 274          * Check if user is blocked
 275          * @return bool True if blocked, false otherwise
 276          */
 277         function isBlocked() {
 278                 $this->getBlockedStatus();
 279                 if ( 0 === $this->mBlockedby ) { return false; }
 280                 return true;
 281         }
 282
 283         /**
 284          * Get name of blocker
 285          * @return string name of blocker
 286          */
 287         function blockedBy() {
 288                 $this->getBlockedStatus();
 289                 return $this->mBlockedby;
 290         }
 291
 292         /**
 293          * Get blocking reason
 294          * @return string Blocking reason
 295          */
 296         function blockedFor() {
 297                 $this->getBlockedStatus();
 298                 return $this->mBlockreason;
 299         }
 300
 301         /**
 302          * Initialise php session
 303          */
 304         function SetupSession() {
 305                 global $wgSessionsInMemcached, $wgCookiePath, $wgCookieDomain;
 306                 if( $wgSessionsInMemcached ) {
 307                         require_once( 'MemcachedSessions.php' );
 308                 } elseif( 'files' != ini_get( 'session.save_handler' ) ) {
 309                         # If it's left on 'user' or another setting from another
 310                         # application, it will end up failing. Try to recover.
 311                         ini_set ( 'session.save_handler', 'files' );
 312                 }
 313                 session_set_cookie_params( 0, $wgCookiePath, $wgCookieDomain );
 314                 session_cache_limiter( 'private, must-revalidate' );
 315                 @session_start();
 316         }
 317
 318         /**
 319          * Read datas from session
 320          * @static
 321          */
 322         function loadFromSession() {
 323                 global $wgMemc, $wgDBname;
 324
 325                 if ( isset( $_SESSION['wsUserID'] ) ) {
 326                         if ( 0 != $_SESSION['wsUserID'] ) {
 327                                 $sId = $_SESSION['wsUserID'];
 328                         } else {
 329                                 return new User();
 330                         }
 331                 } else if ( isset( $_COOKIE["{$wgDBname}UserID"] ) ) {
 332                         $sId = IntVal( $_COOKIE["{$wgDBname}UserID"] );
 333                         $_SESSION['wsUserID'] = $sId;
 334                 } else {
 335                         return new User();
 336                 }
 337                 if ( isset( $_SESSION['wsUserName'] ) ) {
 338                         $sName = $_SESSION['wsUserName'];
 339                 } else if ( isset( $_COOKIE["{$wgDBname}UserName"] ) ) {
 340                         $sName = $_COOKIE["{$wgDBname}UserName"];
 341                         $_SESSION['wsUserName'] = $sName;
 342                 } else {
 343                         return new User();
 344                 }
 345
 346                 $passwordCorrect = FALSE;
 347                 $user = $wgMemc->get( $key = "$wgDBname:user:id:$sId" );
 348                 if($makenew = !$user) {
 349                         wfDebug( "User::loadFromSession() unable to load from memcached\n" );
 350                         $user = new User();
 351                         $user->mId = $sId;
 352                         $user->loadFromDatabase();
 353                 } else {
 354                         wfDebug( "User::loadFromSession() got from cache!\n" );
 355                 }
 356
 357                 if ( isset( $_SESSION['wsToken'] ) ) {
 358                         $passwordCorrect = $_SESSION['wsToken'] == $user->mToken;
 359                 } else if ( isset( $_COOKIE["{$wgDBname}Token"] ) ) {
 360                         $passwordCorrect = $user->mToken == $_COOKIE["{$wgDBname}Token"];
 361                 } else {
 362                         return new User(); # Can't log in from session
 363                 }
 364
 365                 if ( ( $sName == $user->mName ) && $passwordCorrect ) {
 366                         if($makenew) {
 367                                 if($wgMemc->set( $key, $user ))
 368                                         wfDebug( "User::loadFromSession() successfully saved user\n" );
 369                                 else
 370                                         wfDebug( "User::loadFromSession() unable to save to memcached\n" );
 371                         }
 372                         $user->spreadBlock();
 373                         return $user;
 374                 }
 375                 return new User(); # Can't log in from session
 376         }
 377
 378         /**
 379          * Load a user from the database
 380          */
 381         function loadFromDatabase() {
 382                 global $wgCommandLineMode, $wgAnonGroupId, $wgLoggedInGroupId;
 383                 $fname = "User::loadFromDatabase";
 384                 if ( $this->mDataLoaded || $wgCommandLineMode ) {
 385                         return;
 386                 }
 387
 388                 # Paranoia
 389                 $this->mId = IntVal( $this->mId );
 390
 391                 /** Anonymous user */
 392                 if(!$this->mId) {
 393                         /** Get rights */
 394                         $anong = Group::newFromId($wgAnonGroupId);
 395                         if (!$anong)
 396                                 wfDebugDieBacktrace("Please update your database schema "
 397                                         ."and populate initial group data from "
 398                                         ."maintenance/archives patches");
 399                         $anong->loadFromDatabase();
 400                         $this->mRights = explode(',', $anong->getRights());
 401                         $this->mDataLoaded = true;
 402                         return;
 403                 } # the following stuff is for non-anonymous users only
 404
 405                 $dbr =& wfGetDB( DB_SLAVE );
 406                 $s = $dbr->selectRow( 'user', array( 'user_name','user_password','user_newpassword','user_email',
 407                   'user_emailauthenticationtimestamp',
 408                   'user_real_name','user_options','user_touched', 'user_token' ),
 409                   array( 'user_id' => $this->mId ), $fname );
 410
 411                 if ( $s !== false ) {
 412                         $this->mName = $s->user_name;
 413                         $this->mEmail = $s->user_email;
 414                         $this->mEmailAuthenticationtimestamp = $s->user_emailauthenticationtimestamp;
 415                         $this->mRealName = $s->user_real_name;
 416                         $this->mPassword = $s->user_password;
 417                         $this->mNewpassword = $s->user_newpassword;
 418                         $this->decodeOptions( $s->user_options );
 419                         $this->mTouched = wfTimestamp(TS_MW,$s->user_touched);
 420                         $this->mToken = $s->user_token;
 421
 422                         // Get groups id
 423                         $res = $dbr->select( 'user_groups', array( 'ug_group' ), array( 'ug_user' => $this->mId ) );
 424
 425                         while($group = $dbr->fetchRow($res)) {
 426                                 $this->mGroups[] = $group[0];
 427                         }
 428
 429                         // add the default group for logged in user
 430                         $this->mGroups[] = $wgLoggedInGroupId;
 431
 432                         $this->mRights = array();
 433                         // now we merge groups rights to get this user rights
 434                         foreach($this->mGroups as $aGroupId) {
 435                                 $g = Group::newFromId($aGroupId);
 436                                 $g->loadFromDatabase();
 437                                 $this->mRights = array_merge($this->mRights, explode(',', $g->getRights()));
 438                         }
 439
 440                         // array merge duplicate rights which are part of several groups
 441                         $this->mRights = array_unique($this->mRights);
 442
 443                         $dbr->freeResult($res);
 444                 }
 445
 446                 $this->mDataLoaded = true;
 447         }
 448
 449         function getID() { return $this->mId; }
 450         function setID( $v ) {
 451                 $this->mId = $v;
 452                 $this->mDataLoaded = false;
 453         }
 454
 455         function getName() {
 456                 $this->loadFromDatabase();
 457                 return $this->mName;
 458         }
 459
 460         function setName( $str ) {
 461                 $this->loadFromDatabase();
 462                 $this->mName = $str;
 463         }
 464
 465
 466         /**
 467          * Return the title dbkey form of the name, for eg user pages.
 468          * @return string
 469          * @access public
 470          */
 471         function getTitleKey() {
 472                 return str_replace( ' ', '_', $this->getName() );
 473         }
 474
 475         function getNewtalk() {
 476                 $fname = 'User::getNewtalk';
 477                 $this->loadFromDatabase();
 478
 479                 # Load the newtalk status if it is unloaded (mNewtalk=-1)
 480                 if( $this->mNewtalk == -1 ) {
 481                         $this->mNewtalk = 0; # reset talk page status
 482
 483                         # Check memcached separately for anons, who have no
 484                         # entire User object stored in there.
 485                         if( !$this->mId ) {
 486                                 global $wgDBname, $wgMemc;
 487                                 $key = "$wgDBname:newtalk:ip:{$this->mName}";
 488                                 $newtalk = $wgMemc->get( $key );
 489                                 if( is_integer( $newtalk ) ) {
 490                                         $this->mNewtalk = $newtalk ? 1 : 0;
 491                                         return (bool)$this->mNewtalk;
 492                                 }
 493                         }
 494
 495                         $dbr =& wfGetDB( DB_SLAVE );
 496                         $res = $dbr->select( 'watchlist',
 497                                 array( 'wl_user' ),
 498                                 array( 'wl_title'     => $this->getTitleKey(),
 499                                            'wl_namespace' => NS_USER_TALK,
 500                                            'wl_user'      => $this->mId,
 501                                            'wl_notificationtimestamp != 0' ),
 502                                 'User::getNewtalk' );
 503                         if( $dbr->numRows($res) > 0 ) {
 504                                 $this->mNewtalk = 1;
 505                         }
 506                         $dbr->freeResult( $res );
 507
 508                         if( !$this->mId ) {
 509                                 $wgMemc->set( $key, $this->mNewtalk, time() ); // + 1800 );
 510                         }
 511                 }
 512
 513                 return ( 0 != $this->mNewtalk );
 514         }
 515
 516         function setNewtalk( $val ) {
 517                 $this->loadFromDatabase();
 518                 $this->mNewtalk = $val;
 519                 $this->invalidateCache();
 520         }
 521
 522         function invalidateCache() {
 523                 $this->loadFromDatabase();
 524                 $this->mTouched = wfTimestampNow();
 525                 # Don't forget to save the options after this or
 526                 # it won't take effect!
 527         }
 528
 529         function validateCache( $timestamp ) {
 530                 $this->loadFromDatabase();
 531                 return ($timestamp >= $this->mTouched);
 532         }
 533
 534         /**
 535          * Salt a password.
 536          * Will only be salted if $wgPasswordSalt is true
 537          * @param string Password.
 538          * @return string Salted password or clear password.
 539          */
 540         function addSalt( $p ) {
 541                 global $wgPasswordSalt;
 542                 if($wgPasswordSalt)
 543                         return md5( "{$this->mId}-{$p}" );
 544                 else
 545                         return $p;
 546         }
 547
 548         /**
 549          * Encrypt a password.
 550          * It can eventuall salt a password @see User::addSalt()
 551          * @param string $p clear Password.
 552          * @param string Encrypted password.
 553          */
 554         function encryptPassword( $p ) {
 555                 return $this->addSalt( md5( $p ) );
 556         }
 557
 558         # Set the password and reset the random token
 559         function setPassword( $str ) {
 560                 $this->loadFromDatabase();
 561                 $this->setToken();
 562                 $this->mPassword = $this->encryptPassword( $str );
 563                 $this->mNewpassword = '';
 564         }
 565
 566         # Set the random token (used for persistent authentication)
 567         function setToken( $token = false ) {
 568                 if ( !$token ) {
 569                         $this->mToken = '';
 570                         # Take random data from PRNG
 571                         # This is reasonably secure if the PRNG has been seeded correctly
 572                         for ($i = 0; $i<USER_TOKEN_LENGTH / 4; $i++) {
 573                                 $this->mToken .= sprintf( "%04X", mt_rand( 0, 65535 ) );
 574                         }
 575                 } else {
 576                         $this->mToken = $token;
 577                 }
 578         }
 579
 580
 581         function setCookiePassword( $str ) {
 582                 $this->loadFromDatabase();
 583                 $this->mCookiePassword = md5( $str );
 584         }
 585
 586         function setNewpassword( $str ) {
 587                 $this->loadFromDatabase();
 588                 $this->mNewpassword = $this->encryptPassword( $str );
 589         }
 590
 591         function getEmail() {
 592                 $this->loadFromDatabase();
 593                 return $this->mEmail;
 594         }
 595
 596         function getEmailAuthenticationtimestamp() {
 597                 $this->loadFromDatabase();
 598                 return $this->mEmailAuthenticationtimestamp;
 599         }
 600
 601         function setEmail( $str ) {
 602                 $this->loadFromDatabase();
 603                 $this->mEmail = $str;
 604         }
 605
 606         function getRealName() {
 607                 $this->loadFromDatabase();
 608                 return $this->mRealName;
 609         }
 610
 611         function setRealName( $str ) {
 612                 $this->loadFromDatabase();
 613                 $this->mRealName = $str;
 614         }
 615
 616         function getOption( $oname ) {
 617                 $this->loadFromDatabase();
 618                 if ( array_key_exists( $oname, $this->mOptions ) ) {
 619                         return $this->mOptions[$oname];
 620                 } else {
 621                         return '';
 622                 }
 623         }
 624
 625         function setOption( $oname, $val ) {
 626                 $this->loadFromDatabase();
 627                 if ( $oname == 'skin' ) {
 628                         # Clear cached skin, so the new one displays immediately in Special:Preferences
 629                         unset( $this->mSkin );
 630                 }
 631                 $this->mOptions[$oname] = $val;
 632                 $this->invalidateCache();
 633         }
 634
 635         function getRights() {
 636                 $this->loadFromDatabase();
 637                 return $this->mRights;
 638         }
 639
 640         function addRight( $rname )     {
 641                 $this->loadFromDatabase();
 642                 array_push( $this->mRights, $rname );
 643                 $this->invalidateCache();
 644         }
 645
 646         function getGroups() {
 647                 $this->loadFromDatabase();
 648                 return $this->mGroups;
 649         }
 650
 651         function setGroups($groups) {
 652                 $this->loadFromDatabase();
 653                 $this->mGroups = $groups;
 654                 $this->invalidateCache();
 655         }
 656
 657         /**
 658          * Check if a user is sysop
 659          * Die with backtrace. Use User:isAllowed() instead.
 660          * @deprecated
 661          */
 662         function isSysop() {
 663         /**
 664                 $this->loadFromDatabase();
 665                 if ( 0 == $this->mId ) { return false; }
 666
 667                 return in_array( 'sysop', $this->mRights );
 668         */
 669         wfDebugDieBacktrace("User::isSysop() is deprecated. Use User::isAllowed() instead");
 670         }
 671
 672         /** @deprecated */
 673         function isDeveloper() {
 674         /**
 675                 $this->loadFromDatabase();
 676                 if ( 0 == $this->mId ) { return false; }
 677
 678                 return in_array( 'developer', $this->mRights );
 679         */
 680         wfDebugDieBacktrace("User::isDeveloper() is deprecated. Use User::isAllowed() instead");
 681         }
 682
 683         /** @deprecated */
 684         function isBureaucrat() {
 685         /**
 686                 $this->loadFromDatabase();
 687                 if ( 0 == $this->mId ) { return false; }
 688
 689                 return in_array( 'bureaucrat', $this->mRights );
 690         */
 691         wfDebugDieBacktrace("User::isBureaucrat() is deprecated. Use User::isAllowed() instead");
 692         }
 693
 694         /**
 695          * Whether the user is a bot
 696          * @todo need to be migrated to the new user level management sytem
 697          */
 698         function isBot() {
 699                 $this->loadFromDatabase();
 700
 701                 # Why was this here? I need a UID=0 conversion script [TS]
 702                 # if ( 0 == $this->mId ) { return false; }
 703
 704                 return in_array( 'bot', $this->mRights );
 705         }
 706
 707         /**
 708          * Check if user is allowed to access a feature / make an action
 709          * @param string $action Action to be checked (see $wgAvailableRights in Defines.php for possible actions).
 710          * @return boolean True: action is allowed, False: action should not be allowed
 711          */
 712         function isAllowed($action='') {
 713                 $this->loadFromDatabase();
 714                 return in_array( $action , $this->mRights );
 715         }
 716
 717         /**
 718          * Load a skin if it doesn't exist or return it
 719          * @todo FIXME : need to check the old failback system [AV]
 720          */
 721         function &getSkin() {
 722                 global $IP;
 723                 if ( ! isset( $this->mSkin ) ) {
 724                         $fname = 'User::getSkin';
 725                         wfProfileIn( $fname );
 726
 727                         # get all skin names available
 728                         $skinNames = Skin::getSkinNames();
 729
 730                         # get the user skin
 731                         $userSkin = $this->getOption( 'skin' );
 732                         if ( $userSkin == '' ) { $userSkin = 'standard'; }
 733
 734                         if ( !isset( $skinNames[$userSkin] ) ) {
 735                                 # in case the user skin could not be found find a replacement
 736                                 $fallback = array(
 737                                         0 => 'Standard',
 738                                         1 => 'Nostalgia',
 739                                         2 => 'CologneBlue');
 740                                 # if phptal is enabled we should have monobook skin that
 741                                 # superseed the good old SkinStandard.
 742                                 if ( isset( $skinNames['monobook'] ) ) {
 743                                         $fallback[0] = 'MonoBook';
 744                                 }
 745
 746                                 if(is_numeric($userSkin) && isset( $fallback[$userSkin]) ){
 747                                         $sn = $fallback[$userSkin];
 748                                 } else {
 749                                         $sn = 'Standard';
 750                                 }
 751                         } else {
 752                                 # The user skin is available
 753                                 $sn = $skinNames[$userSkin];
 754                         }
 755
 756                         # Grab the skin class and initialise it. Each skin checks for PHPTal
 757                         # and will not load if it's not enabled.
 758                         require_once( $IP.'/skins/'.$sn.'.php' );
 759
 760                         # Check if we got if not failback to default skin
 761                         $className = 'Skin'.$sn;
 762                         if( !class_exists( $className ) ) {
 763                                 # DO NOT die if the class isn't found. This breaks maintenance
 764                                 # scripts and can cause a user account to be unrecoverable
 765                                 # except by SQL manipulation if a previously valid skin name
 766                                 # is no longer valid.
 767                                 $className = 'SkinStandard';
 768                                 require_once( $IP.'/skins/Standard.php' );
 769                         }
 770                         $this->mSkin =& new $className;
 771                         wfProfileOut( $fname );
 772                 }
 773                 return $this->mSkin;
 774         }
 775
 776         /**#@+
 777          * @param string $title Article title to look at
 778          */
 779
 780         /**
 781          * Check watched status of an article
 782          * @return bool True if article is watched
 783          */
 784         function isWatched( $title ) {
 785                 $wl = WatchedItem::fromUserTitle( $this, $title );
 786                 return $wl->isWatched();
 787         }
 788
 789         /**
 790          * Watch an article
 791          */
 792         function addWatch( $title ) {
 793                 $wl = WatchedItem::fromUserTitle( $this, $title );
 794                 $wl->addWatch();
 795                 $this->invalidateCache();
 796         }
 797
 798         /**
 799          * Stop watching an article
 800          */
 801         function removeWatch( $title ) {
 802                 $wl = WatchedItem::fromUserTitle( $this, $title );
 803                 $wl->removeWatch();
 804                 $this->invalidateCache();
 805         }
 806
 807         /**
 808          * Clear the user's notification timestamp for the given title.
 809          * If e-notif e-mails are on, they will receive notification mails on
 810          * the next change of the page if it's watched etc.
 811          */
 812         function clearNotification( $title ) {
 813                 $dbw =& wfGetDB( DB_MASTER );
 814                 $success = $dbw->update( 'watchlist',
 815                                 array( /* SET */
 816                                         'wl_notificationtimestamp' => 0
 817                                 ), array( /* WHERE */
 818                                         'wl_title' => $title->getDBkey(),
 819                                         'wl_namespace' => $title->getNamespace(),
 820                                         'wl_user' => $this->getId()
 821                                 ), 'User::clearLastVisited'
 822                 );
 823         }
 824
 825         /**#@-*/
 826
 827         /**
 828          * Resets all of the given user's page-change notification timestamps.
 829          * If e-notif e-mails are on, they will receive notification mails on
 830          * the next change of any watched page.
 831          *
 832          * @param int $currentUser user ID number
 833          * @access public
 834          */
 835         function clearAllNotifications( $currentUser ) {
 836                 if( $currentUser != 0 )  {
 837
 838                         $dbw =& wfGetDB( DB_MASTER );
 839                         $success = $dbw->update( 'watchlist',
 840                                 array( /* SET */
 841                                         'wl_notificationtimestamp' => 0
 842                                 ), array( /* WHERE */
 843                                         'wl_user' => $currentUser
 844                                 ), 'UserMailer::clearAll'
 845                         );
 846
 847                 #       we also need to clear here the "you have new message" notification for the own user_talk page
 848                 #       This is cleared one page view later in Article::viewUpdates();
 849                 }
 850         }
 851
 852         /**
 853          * @access private
 854          * @return string Encoding options
 855          */
 856         function encodeOptions() {
 857                 $a = array();
 858                 foreach ( $this->mOptions as $oname => $oval ) {
 859                         array_push( $a, $oname.'='.$oval );
 860                 }
 861                 $s = implode( "\n", $a );
 862                 return $s;
 863         }
 864
 865         /**
 866          * @access private
 867          */
 868         function decodeOptions( $str ) {
 869                 $a = explode( "\n", $str );
 870                 foreach ( $a as $s ) {
 871                         if ( preg_match( "/^(.[^=]*)=(.*)$/", $s, $m ) ) {
 872                                 $this->mOptions[$m[1]] = $m[2];
 873                         }
 874                 }
 875         }
 876
 877         function setCookies() {
 878                 global $wgCookieExpiration, $wgCookiePath, $wgCookieDomain, $wgDBname;
 879                 if ( 0 == $this->mId ) return;
 880                 $this->loadFromDatabase();
 881                 $exp = time() + $wgCookieExpiration;
 882
 883                 $_SESSION['wsUserID'] = $this->mId;
 884                 setcookie( $wgDBname.'UserID', $this->mId, $exp, $wgCookiePath, $wgCookieDomain );
 885
 886                 $_SESSION['wsUserName'] = $this->mName;
 887                 setcookie( $wgDBname.'UserName', $this->mName, $exp, $wgCookiePath, $wgCookieDomain );
 888
 889                 $_SESSION['wsToken'] = $this->mToken;
 890                 if ( 1 == $this->getOption( 'rememberpassword' ) ) {
 891                         setcookie( $wgDBname.'Token', $this->mToken, $exp, $wgCookiePath, $wgCookieDomain );
 892                 } else {
 893                         setcookie( $wgDBname.'Token', '', time() - 3600 );
 894                 }
 895         }
 896
 897         /**
 898          * Logout user
 899          * It will clean the session cookie
 900          */
 901         function logout() {
 902                 global $wgCookiePath, $wgCookieDomain, $wgDBname, $wgIP;
 903                 $this->loadDefaults();
 904                 $this->setLoaded( true );
 905
 906                 $_SESSION['wsUserID'] = 0;
 907
 908                 setcookie( $wgDBname.'UserID', '', time() - 3600, $wgCookiePath, $wgCookieDomain );
 909                 setcookie( $wgDBname.'Token', '', time() - 3600, $wgCookiePath, $wgCookieDomain );
 910         }
 911
 912         /**
 913          * Save object settings into database
 914          */
 915         function saveSettings() {
 916                 global $wgMemc, $wgDBname;
 917                 $fname = 'User::saveSettings';
 918
 919                 $dbw =& wfGetDB( DB_MASTER );
 920                 if ( ! $this->getNewtalk() ) {
 921                         # Delete the watchlist entry for user_talk page X watched by user X
 922                         $dbw->delete( 'watchlist',
 923                                 array( 'wl_user'      => $this->mId,
 924                                            'wl_title'     => $this->getTitleKey(),
 925                                            'wl_namespace' => NS_USER_TALK ),
 926                                 $fname );
 927                         if( !$this->mId ) {
 928                                 # Anon users have a separate memcache space for newtalk
 929                                 # since they don't store their own info. Trim...
 930                                 $wgMemc->delete( "$wgDBname:newtalk:ip:{$this->mName}" );
 931                         }
 932                 }
 933
 934                 if ( 0 == $this->mId ) { return; }
 935
 936                 $dbw->update( 'user',
 937                         array( /* SET */
 938                                 'user_name' => $this->mName,
 939                                 'user_password' => $this->mPassword,
 940                                 'user_newpassword' => $this->mNewpassword,
 941                                 'user_real_name' => $this->mRealName,
 942                                 'user_email' => $this->mEmail,
 943                                 'user_emailauthenticationtimestamp' => $this->mEmailAuthenticationtimestamp,
 944                                 'user_options' => $this->encodeOptions(),
 945                                 'user_touched' => $dbw->timestamp($this->mTouched),
 946                                 'user_token' => $this->mToken
 947                         ), array( /* WHERE */
 948                                 'user_id' => $this->mId
 949                         ), $fname
 950                 );
 951                 $dbw->set( 'user_rights', 'ur_rights', implode( ',', $this->mRights ),
 952                         'ur_user='. $this->mId, $fname );
 953                 $wgMemc->delete( "$wgDBname:user:id:$this->mId" );
 954
 955                 // delete old groups
 956                 $dbw->delete( 'user_groups', array( 'ug_user' => $this->mId), $fname);
 957
 958                 // save new ones
 959                 foreach ($this->mGroups as $group) {
 960                         $dbw->replace( 'user_groups',
 961                                 array(array('ug_user','ug_group')),
 962                                 array(
 963                                         'ug_user' => $this->mId,
 964                                         'ug_group' => $group
 965                                 ), $fname
 966                         );
 967                 }
 968         }
 969
 970
 971         /**
 972          * Checks if a user with the given name exists, returns the ID
 973          */
 974         function idForName() {
 975                 $fname = 'User::idForName';
 976
 977                 $gotid = 0;
 978                 $s = trim( $this->mName );
 979                 if ( 0 == strcmp( '', $s ) ) return 0;
 980
 981                 $dbr =& wfGetDB( DB_SLAVE );
 982                 $id = $dbr->selectField( 'user', 'user_id', array( 'user_name' => $s ), $fname );
 983                 if ( $id === false ) {
 984                         $id = 0;
 985                 }
 986                 return $id;
 987         }
 988
 989         /**
 990          * Add user object to the database
 991          */
 992         function addToDatabase() {
 993                 $fname = 'User::addToDatabase';
 994                 $dbw =& wfGetDB( DB_MASTER );
 995                 $seqVal = $dbw->nextSequenceValue( 'user_user_id_seq' );
 996                 $dbw->insert( 'user',
 997                         array(
 998                                 'user_id' => $seqVal,
 999                                 'user_name' => $this->mName,
1000                                 'user_password' => $this->mPassword,
1001                                 'user_newpassword' => $this->mNewpassword,
1002                                 'user_email' => $this->mEmail,
1003                                 'user_emailauthenticationtimestamp' => $this->mEmailAuthenticationtimestamp,
1004                                 'user_real_name' => $this->mRealName,
1005                                 'user_options' => $this->encodeOptions(),
1006                                 'user_token' => $this->mToken
1007                         ), $fname
1008                 );
1009                 $this->mId = $dbw->insertId();
1010                 $dbw->insert( 'user_rights',
1011                         array(
1012                                 'ur_user' => $this->mId,
1013                                 'ur_rights' => implode( ',', $this->mRights )
1014                         ), $fname
1015                 );
1016
1017                 foreach ($this->mGroups as $group) {
1018                         $dbw->insert( 'user_groups',
1019                                 array(
1020                                         'ug_user' => $this->mId,
1021                                         'ug_group' => $group
1022                                 ), $fname
1023                         );
1024                 }
1025         }
1026
1027         function spreadBlock() {
1028                 global $wgIP;
1029                 # If the (non-anonymous) user is blocked, this function will block any IP address
1030                 # that they successfully log on from.
1031                 $fname = 'User::spreadBlock';
1032
1033                 wfDebug( "User:spreadBlock()\n" );
1034                 if ( $this->mId == 0 ) {
1035                         return;
1036                 }
1037
1038                 $userblock = Block::newFromDB( '', $this->mId );
1039                 if ( !$userblock->isValid() ) {
1040                         return;
1041                 }
1042
1043                 # Check if this IP address is already blocked
1044                 $ipblock = Block::newFromDB( $wgIP );
1045                 if ( $ipblock->isValid() ) {
1046                         # Just update the timestamp
1047                         $ipblock->updateTimestamp();
1048                         return;
1049                 }
1050
1051                 # Make a new block object with the desired properties
1052                 wfDebug( "Autoblocking {$this->mName}@{$wgIP}\n" );
1053                 $ipblock->mAddress = $wgIP;
1054                 $ipblock->mUser = 0;
1055                 $ipblock->mBy = $userblock->mBy;
1056                 $ipblock->mReason = wfMsg( 'autoblocker', $this->getName(), $userblock->mReason );
1057                 $ipblock->mTimestamp = wfTimestampNow();
1058                 $ipblock->mAuto = 1;
1059                 # If the user is already blocked with an expiry date, we don't
1060                 # want to pile on top of that!
1061                 if($userblock->mExpiry) {
1062                         $ipblock->mExpiry = min ( $userblock->mExpiry, Block::getAutoblockExpiry( $ipblock->mTimestamp ));
1063                 } else {
1064                         $ipblock->mExpiry = Block::getAutoblockExpiry( $ipblock->mTimestamp );
1065                 }
1066
1067                 # Insert it
1068                 $ipblock->insert();
1069
1070         }
1071
1072         function getPageRenderingHash() {
1073                 global $wgContLang;
1074                 if( $this->mHash ){
1075                         return $this->mHash;
1076                 }
1077
1078                 // stubthreshold is only included below for completeness,
1079                 // it will always be 0 when this function is called by parsercache.
1080
1081                 $confstr =        $this->getOption( 'math' );
1082                 $confstr .= '!' . $this->getOption( 'highlightbroken' );
1083                 $confstr .= '!' . $this->getOption( 'stubthreshold' );
1084                 $confstr .= '!' . $this->getOption( 'editsection' );
1085                 $confstr .= '!' . $this->getOption( 'editsectiononrightclick' );
1086                 $confstr .= '!' . $this->getOption( 'showtoc' );
1087                 $confstr .= '!' . $this->getOption( 'date' );
1088                 $confstr .= '!' . $this->getOption( 'numberheadings' );
1089                 $confstr .= '!' . $this->getOption( 'language' );
1090                 // add in language specific options, if any
1091                 $extra = $wgContLang->getExtraHashOptions();
1092                 foreach( $extra as $e ) {
1093                         $confstr .= '!' . $this->getOption( $e );
1094                 }
1095
1096                 $this->mHash = $confstr;
1097                 return $confstr ;
1098         }
1099
1100         function isAllowedToCreateAccount() {
1101                 global $wgWhitelistAccount;
1102                 $allowed = false;
1103
1104                 if (!$wgWhitelistAccount) { return 1; }; // default behaviour
1105                 foreach ($wgWhitelistAccount as $right => $ok) {
1106                         $userHasRight = (!strcmp($right, 'user') || in_array($right, $this->getRights()));
1107                         $allowed |= ($ok && $userHasRight);
1108                 }
1109                 return $allowed;
1110         }
1111
1112         /**
1113          * Set mDataLoaded, return previous value
1114          * Use this to prevent DB access in command-line scripts or similar situations
1115          */
1116         function setLoaded( $loaded ) {
1117                 return wfSetVar( $this->mDataLoaded, $loaded );
1118         }
1119
1120         function getUserPage() {
1121                 return Title::makeTitle( NS_USER, $this->mName );
1122         }
1123
1124         /**
1125          * @static
1126          */
1127         function getMaxID() {
1128                 $dbr =& wfGetDB( DB_SLAVE );
1129                 return $dbr->selectField( 'user', 'max(user_id)', false );
1130         }
1131
1132         /**
1133          * Determine whether the user is a newbie. Newbies are either
1134          * anonymous IPs, or the 1% most recently created accounts.
1135          * Bots and sysops are excluded.
1136          * @return bool True if it is a newbie.
1137          */
1138         function isNewbie() {
1139                 return $this->mId > User::getMaxID() * 0.99 && !$this->isSysop() && !$this->isBot() || $this->getID() == 0;
1140         }
1141
1142         /**
1143          * Check to see if the given clear-text password is one of the accepted passwords
1144          * @param string $password User password.
1145          * @return bool True if the given password is correct otherwise False.
1146          */
1147         function checkPassword( $password ) {
1148                 global $wgAuth;
1149                 $this->loadFromDatabase();
1150
1151                 if( $wgAuth->authenticate( $this->getName(), $password ) ) {
1152                         return true;
1153                 } elseif( $wgAuth->strict() ) {
1154                         /* Auth plugin doesn't allow local authentication */
1155                         return false;
1156                 }
1157                 $ep = $this->encryptPassword( $password );
1158                 if ( 0 == strcmp( $ep, $this->mPassword ) ) {
1159                         return true;
1160                 } elseif ( ($this->mNewpassword != '') && (0 == strcmp( $ep, $this->mNewpassword )) ) {
1161                         $this->mEmailAuthenticationtimestamp = wfTimestampNow();
1162                         $this->mNewpassword = ''; # use the temporary one-time password only once: clear it now !
1163                         $this->saveSettings();
1164                         return true;
1165                 } elseif ( function_exists( 'iconv' ) ) {
1166                         # Some wikis were converted from ISO 8859-1 to UTF-8, the passwords can't be converted
1167                         # Check for this with iconv
1168 /*                      $cp1252hash = $this->encryptPassword( iconv( 'UTF-8', 'WINDOWS-1252', $password ) );
1169                         if ( 0 == strcmp( $cp1252hash, $this->mPassword ) ) {
1170                                 return true;
1171                         }*/
1172                 }
1173                 return false;
1174         }
1175 }
1176
1177 ?>