includes/User.php

   1 <?php
   2 /**
   3  * See user.txt
   4  *
   5  * @package MediaWiki
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'WatchedItem.php' );
  12
  13 # Number of characters in user_token field
  14 define( 'USER_TOKEN_LENGTH', 32 );
  15
  16 # Serialized record version
  17 define( 'MW_USER_VERSION', 3 );
  18
  19 /**
  20  *
  21  * @package MediaWiki
  22  */
  23 class User {
  24         /**#@+
  25          * @access private
  26          */
  27         var $mId, $mName, $mPassword, $mEmail, $mNewtalk;
  28         var $mEmailAuthenticated;
  29         var $mRights, $mOptions;
  30         var $mDataLoaded, $mNewpassword;
  31         var $mSkin;
  32         var $mBlockedby, $mBlockreason;
  33         var $mTouched;
  34         var $mToken;
  35         var $mRealName;
  36         var $mHash;
  37         var $mGroups;
  38         var $mVersion; // serialized version
  39         var $mRegistration;
  40
  41         /** Construct using User:loadDefaults() */
  42         function User() {
  43                 $this->loadDefaults();
  44                 $this->mVersion = MW_USER_VERSION;
  45         }
  46
  47         /**
  48          * Static factory method
  49          * @param string $name Username, validated by Title:newFromText()
  50          * @return User
  51          * @static
  52          */
  53         function newFromName( $name ) {
  54                 # Force usernames to capital
  55                 global $wgContLang;
  56                 $name = $wgContLang->ucfirst( $name );
  57
  58                 # Clean up name according to title rules
  59                 $t = Title::newFromText( $name );
  60                 if( is_null( $t ) ) {
  61                         return null;
  62                 }
  63
  64                 # Reject various classes of invalid names
  65                 $canonicalName = $t->getText();
  66                 global $wgAuth;
  67                 $canonicalName = $wgAuth->getCanonicalName( $t->getText() );
  68
  69                 if( !User::isValidUserName( $canonicalName ) ) {
  70                         return null;
  71                 }
  72
  73                 $u = new User();
  74                 $u->setName( $canonicalName );
  75                 $u->setId( $u->idFromName( $canonicalName ) );
  76                 return $u;
  77         }
  78
  79         /**
  80          * Factory method to fetch whichever use has a given email confirmation code.
  81          * This code is generated when an account is created or its e-mail address
  82          * has changed.
  83          *
  84          * If the code is invalid or has expired, returns NULL.
  85          *
  86          * @param string $code
  87          * @return User
  88          * @static
  89          */
  90         function newFromConfirmationCode( $code ) {
  91                 $dbr =& wfGetDB( DB_SLAVE );
  92                 $name = $dbr->selectField( 'user', 'user_name', array(
  93                         'user_email_token' => md5( $code ),
  94                         'user_email_token_expires > ' . $dbr->addQuotes( $dbr->timestamp() ),
  95                         ) );
  96                 if( is_string( $name ) ) {
  97                         return User::newFromName( $name );
  98                 } else {
  99                         return null;
 100                 }
 101         }
 102
 103         /**
 104          * Serialze sleep function, for better cache efficiency and avoidance of
 105          * silly "incomplete type" errors when skins are cached
 106          */
 107         function __sleep() {
 108                 return array( 'mId', 'mName', 'mPassword', 'mEmail', 'mNewtalk',
 109                         'mEmailAuthenticated', 'mRights', 'mOptions', 'mDataLoaded',
 110                         'mNewpassword', 'mBlockedby', 'mBlockreason', 'mTouched',
 111                         'mToken', 'mRealName', 'mHash', 'mGroups', 'mRegistration' );
 112         }
 113
 114         /**
 115          * Get username given an id.
 116          * @param integer $id Database user id
 117          * @return string Nickname of a user
 118          * @static
 119          */
 120         function whoIs( $id )   {
 121                 $dbr =& wfGetDB( DB_SLAVE );
 122                 return $dbr->selectField( 'user', 'user_name', array( 'user_id' => $id ), 'User::whoIs' );
 123         }
 124
 125         /**
 126          * Get real username given an id.
 127          * @param integer $id Database user id
 128          * @return string Realname of a user
 129          * @static
 130          */
 131         function whoIsReal( $id )       {
 132                 $dbr =& wfGetDB( DB_SLAVE );
 133                 return $dbr->selectField( 'user', 'user_real_name', array( 'user_id' => $id ), 'User::whoIsReal' );
 134         }
 135
 136         /**
 137          * Get database id given a user name
 138          * @param string $name Nickname of a user
 139          * @return integer|null Database user id (null: if non existent
 140          * @static
 141          */
 142         function idFromName( $name ) {
 143                 $fname = "User::idFromName";
 144
 145                 $nt = Title::newFromText( $name );
 146                 if( is_null( $nt ) ) {
 147                         # Illegal name
 148                         return null;
 149                 }
 150                 $dbr =& wfGetDB( DB_SLAVE );
 151                 $s = $dbr->selectRow( 'user', array( 'user_id' ), array( 'user_name' => $nt->getText() ), $fname );
 152
 153                 if ( $s === false ) {
 154                         return 0;
 155                 } else {
 156                         return $s->user_id;
 157                 }
 158         }
 159
 160         /**
 161          * does the string match an anonymous IPv4 address?
 162          *
 163          * Note: We match \d{1,3}\.\d{1,3}\.\d{1,3}\.xxx as an anonymous IP
 164          * address because the usemod software would "cloak" anonymous IP
 165          * addresses like this, if we allowed accounts like this to be created
 166          * new users could get the old edits of these anonymous users.
 167          *
 168          * @bug 3631
 169          *
 170          * @static
 171          * @param string $name Nickname of a user
 172          * @return bool
 173          */
 174         function isIP( $name ) {
 175                 return preg_match("/^\d{1,3}\.\d{1,3}\.\d{1,3}\.(?:xxx|\d{1,3})$/",$name);
 176                 /*return preg_match("/^
 177                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 178                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 179                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 180                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))
 181                 $/x", $name);*/
 182         }
 183
 184         /**
 185          * Is the input a valid username?
 186          *
 187          * Checks if the input is a valid username, we don't want an empty string,
 188          * an IP address, anything that containins slashes (would mess up subpages),
 189          * is longer than the maximum allowed username size or doesn't begin with
 190          * a capital letter.
 191          *
 192          * @param string $name
 193          * @return bool
 194          * @static
 195          */
 196         function isValidUserName( $name ) {
 197                 global $wgContLang, $wgMaxNameChars;
 198
 199                 if ( $name == ''
 200                 || User::isIP( $name )
 201                 || strpos( $name, '/' ) !== false
 202                 || strlen( $name ) > $wgMaxNameChars
 203                 || $name != $wgContLang->ucfirst( $name ) )
 204                         return false;
 205
 206                 // Ensure that the name can't be misresolved as a different title,
 207                 // such as with extra namespace keys at the start.
 208                 $parsed = Title::newFromText( $name );
 209                 if( is_null( $parsed )
 210                         || $parsed->getNamespace()
 211                         || strcmp( $name, $parsed->getPrefixedText() ) )
 212                         return false;
 213                 else
 214                         return true;
 215         }
 216
 217         /**
 218          * Is the input a valid password?
 219          *
 220          * @param string $password
 221          * @return bool
 222          * @static
 223          */
 224         function isValidPassword( $password ) {
 225                 global $wgMinimalPasswordLength;
 226                 return strlen( $password ) >= $wgMinimalPasswordLength;
 227         }
 228
 229         /**
 230          * Does the string match roughly an email address ?
 231          *
 232          * There used to be a regular expression here, it got removed because it
 233          * rejected valid addresses. Actually just check if there is '@' somewhere
 234          * in the given address.
 235          *
 236          * @todo Check for RFC 2822 compilance
 237          * @bug 959
 238          *
 239          * @param string $addr email address
 240          * @static
 241          * @return bool
 242          */
 243         function isValidEmailAddr ( $addr ) {
 244                 return ( trim( $addr ) != '' ) &&
 245                         (false !== strpos( $addr, '@' ) );
 246         }
 247
 248         /**
 249          * Count the number of edits of a user
 250          *
 251          * @param int $uid The user ID to check
 252          * @return int
 253          */
 254         function edits( $uid ) {
 255                 $fname = 'User::edits';
 256
 257                 $dbr =& wfGetDB( DB_SLAVE );
 258                 return $dbr->selectField(
 259                         'revision', 'count(*)',
 260                         array( 'rev_user' => $uid ),
 261                         $fname
 262                 );
 263         }
 264
 265         /**
 266          * probably return a random password
 267          * @return string probably a random password
 268          * @static
 269          * @todo Check what is doing really [AV]
 270          */
 271         function randomPassword() {
 272                 global $wgMinimalPasswordLength;
 273                 $pwchars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz';
 274                 $l = strlen( $pwchars ) - 1;
 275
 276                 $pwlength = max( 7, $wgMinimalPasswordLength );
 277                 $digit = mt_rand(0, $pwlength - 1);
 278                 $np = '';
 279                 for ( $i = 0; $i < $pwlength; $i++ ) {
 280                         $np .= $i == $digit ? chr( mt_rand(48, 57) ) : $pwchars{ mt_rand(0, $l)};
 281                 }
 282                 return $np;
 283         }
 284
 285         /**
 286          * Set properties to default
 287          * Used at construction. It will load per language default settings only
 288          * if we have an available language object.
 289          */
 290         function loadDefaults() {
 291                 static $n=0;
 292                 $n++;
 293                 $fname = 'User::loadDefaults' . $n;
 294                 wfProfileIn( $fname );
 295
 296                 global $wgContLang, $wgDBname;
 297                 global $wgNamespacesToBeSearchedDefault;
 298
 299                 $this->mId = 0;
 300                 $this->mNewtalk = -1;
 301                 $this->mName = false;
 302                 $this->mRealName = $this->mEmail = '';
 303                 $this->mEmailAuthenticated = null;
 304                 $this->mPassword = $this->mNewpassword = '';
 305                 $this->mRights = array();
 306                 $this->mGroups = array();
 307                 $this->mOptions = User::getDefaultOptions();
 308
 309                 foreach( $wgNamespacesToBeSearchedDefault as $nsnum => $val ) {
 310                         $this->mOptions['searchNs'.$nsnum] = $val;
 311                 }
 312                 unset( $this->mSkin );
 313                 $this->mDataLoaded = false;
 314                 $this->mBlockedby = -1; # Unset
 315                 $this->setToken(); # Random
 316                 $this->mHash = false;
 317
 318                 if ( isset( $_COOKIE[$wgDBname.'LoggedOut'] ) ) {
 319                         $this->mTouched = wfTimestamp( TS_MW, $_COOKIE[$wgDBname.'LoggedOut'] );
 320                 }
 321                 else {
 322                         $this->mTouched = '0'; # Allow any pages to be cached
 323                 }
 324
 325                 $this->mRegistration = wfTimestamp( TS_MW );
 326
 327                 wfProfileOut( $fname );
 328         }
 329
 330         /**
 331          * Combine the language default options with any site-specific options
 332          * and add the default language variants.
 333          *
 334          * @return array
 335          * @static
 336          * @access private
 337          */
 338         function getDefaultOptions() {
 339                 /**
 340                  * Site defaults will override the global/language defaults
 341                  */
 342                 global $wgContLang, $wgDefaultUserOptions;
 343                 $defOpt = $wgDefaultUserOptions + $wgContLang->getDefaultUserOptions();
 344
 345                 /**
 346                  * default language setting
 347                  */
 348                 $variant = $wgContLang->getPreferredVariant();
 349                 $defOpt['variant'] = $variant;
 350                 $defOpt['language'] = $variant;
 351
 352                 return $defOpt;
 353         }
 354
 355         /**
 356          * Get a given default option value.
 357          *
 358          * @param string $opt
 359          * @return string
 360          * @static
 361          * @access public
 362          */
 363         function getDefaultOption( $opt ) {
 364                 $defOpts = User::getDefaultOptions();
 365                 if( isset( $defOpts[$opt] ) ) {
 366                         return $defOpts[$opt];
 367                 } else {
 368                         return '';
 369                 }
 370         }
 371
 372         /**
 373          * Get blocking information
 374          * @access private
 375          * @param bool $bFromSlave Specify whether to check slave or master. To improve performance,
 376          *  non-critical checks are done against slaves. Check when actually saving should be done against
 377          *  master.
 378          */
 379         function getBlockedStatus( $bFromSlave = true ) {
 380                 global $wgEnableSorbs, $wgProxyWhitelist;
 381
 382                 if ( -1 != $this->mBlockedby ) {
 383                         wfDebug( "User::getBlockedStatus: already loaded.\n" );
 384                         return;
 385                 }
 386
 387                 $fname = 'User::getBlockedStatus';
 388                 wfProfileIn( $fname );
 389                 wfDebug( "$fname: checking...\n" );
 390
 391                 $this->mBlockedby = 0;
 392                 $ip = wfGetIP();
 393
 394                 # User/IP blocking
 395                 $block = new Block();
 396                 $block->fromMaster( !$bFromSlave );
 397                 if ( $block->load( $ip , $this->mId ) ) {
 398                         wfDebug( "$fname: Found block.\n" );
 399                         $this->mBlockedby = $block->mBy;
 400                         $this->mBlockreason = $block->mReason;
 401                         if ( $this->isLoggedIn() ) {
 402                                 $this->spreadBlock();
 403                         }
 404                 } else {
 405                         wfDebug( "$fname: No block.\n" );
 406                 }
 407
 408                 # Proxy blocking
 409                 if ( !$this->isSysop() && !in_array( $ip, $wgProxyWhitelist ) ) {
 410
 411                         # Local list
 412                         if ( wfIsLocallyBlockedProxy( $ip ) ) {
 413                                 $this->mBlockedby = wfMsg( 'proxyblocker' );
 414                                 $this->mBlockreason = wfMsg( 'proxyblockreason' );
 415                         }
 416
 417                         # DNSBL
 418                         if ( !$this->mBlockedby && $wgEnableSorbs && !$this->getID() ) {
 419                                 if ( $this->inSorbsBlacklist( $ip ) ) {
 420                                         $this->mBlockedby = wfMsg( 'sorbs' );
 421                                         $this->mBlockreason = wfMsg( 'sorbsreason' );
 422                                 }
 423                         }
 424                 }
 425
 426                 # Extensions
 427                 wfRunHooks( 'GetBlockedStatus', array( &$this ) );
 428
 429                 wfProfileOut( $fname );
 430         }
 431
 432         function inSorbsBlacklist( $ip ) {
 433                 global $wgEnableSorbs;
 434                 return $wgEnableSorbs &&
 435                         $this->inDnsBlacklist( $ip, 'http.dnsbl.sorbs.net.' );
 436         }
 437
 438         function inOpmBlacklist( $ip ) {
 439                 global $wgEnableOpm;
 440                 return $wgEnableOpm &&
 441                         $this->inDnsBlacklist( $ip, 'opm.blitzed.org.' );
 442         }
 443
 444         function inDnsBlacklist( $ip, $base ) {
 445                 $fname = 'User::inDnsBlacklist';
 446                 wfProfileIn( $fname );
 447
 448                 $found = false;
 449                 $host = '';
 450
 451                 if ( preg_match( '/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/', $ip, $m ) ) {
 452                         # Make hostname
 453                         for ( $i=4; $i>=1; $i-- ) {
 454                                 $host .= $m[$i] . '.';
 455                         }
 456                         $host .= $base;
 457
 458                         # Send query
 459                         $ipList = gethostbynamel( $host );
 460
 461                         if ( $ipList ) {
 462                                 wfDebug( "Hostname $host is {$ipList[0]}, it's a proxy says $base!\n" );
 463                                 $found = true;
 464                         } else {
 465                                 wfDebug( "Requested $host, not found in $base.\n" );
 466                         }
 467                 }
 468
 469                 wfProfileOut( $fname );
 470                 return $found;
 471         }
 472
 473         /**
 474          * Primitive rate limits: enforce maximum actions per time period
 475          * to put a brake on flooding.
 476          *
 477          * Note: when using a shared cache like memcached, IP-address
 478          * last-hit counters will be shared across wikis.
 479          *
 480          * @return bool true if a rate limiter was tripped
 481          * @access public
 482          */
 483         function pingLimiter( $action='edit' ) {
 484                 global $wgRateLimits;
 485                 if( !isset( $wgRateLimits[$action] ) ) {
 486                         return false;
 487                 }
 488                 if( $this->isAllowed( 'delete' ) ) {
 489                         // goddam cabal
 490                         return false;
 491                 }
 492
 493                 global $wgMemc, $wgDBname, $wgRateLimitLog;
 494                 $fname = 'User::pingLimiter';
 495                 wfProfileIn( $fname );
 496
 497                 $limits = $wgRateLimits[$action];
 498                 $keys = array();
 499                 $id = $this->getId();
 500                 $ip = wfGetIP();
 501
 502                 if( isset( $limits['anon'] ) && $id == 0 ) {
 503                         $keys["$wgDBname:limiter:$action:anon"] = $limits['anon'];
 504                 }
 505
 506                 if( isset( $limits['user'] ) && $id != 0 ) {
 507                         $keys["$wgDBname:limiter:$action:user:$id"] = $limits['user'];
 508                 }
 509                 if( $this->isNewbie() ) {
 510                         if( isset( $limits['newbie'] ) && $id != 0 ) {
 511                                 $keys["$wgDBname:limiter:$action:user:$id"] = $limits['newbie'];
 512                         }
 513                         if( isset( $limits['ip'] ) ) {
 514                                 $keys["mediawiki:limiter:$action:ip:$ip"] = $limits['ip'];
 515                         }
 516                         if( isset( $limits['subnet'] ) && preg_match( '/^(\d+\.\d+\.\d+)\.\d+$/', $ip, $matches ) ) {
 517                                 $subnet = $matches[1];
 518                                 $keys["mediawiki:limiter:$action:subnet:$subnet"] = $limits['subnet'];
 519                         }
 520                 }
 521
 522                 $triggered = false;
 523                 foreach( $keys as $key => $limit ) {
 524                         list( $max, $period ) = $limit;
 525                         $summary = "(limit $max in {$period}s)";
 526                         $count = $wgMemc->get( $key );
 527                         if( $count ) {
 528                                 if( $count > $max ) {
 529                                         wfDebug( "$fname: tripped! $key at $count $summary\n" );
 530                                         if( $wgRateLimitLog ) {
 531                                                 @error_log( wfTimestamp( TS_MW ) . ' ' . $wgDBname . ': ' . $this->getName() . " tripped $key at $count $summary\n", 3, $wgRateLimitLog );
 532                                         }
 533                                         $triggered = true;
 534                                 } else {
 535                                         wfDebug( "$fname: ok. $key at $count $summary\n" );
 536                                 }
 537                         } else {
 538                                 wfDebug( "$fname: adding record for $key $summary\n" );
 539                                 $wgMemc->add( $key, 1, intval( $period ) );
 540                         }
 541                         $wgMemc->incr( $key );
 542                 }
 543
 544                 wfProfileOut( $fname );
 545                 return $triggered;
 546         }
 547
 548         /**
 549          * Check if user is blocked
 550          * @return bool True if blocked, false otherwise
 551          */
 552         function isBlocked( $bFromSlave = true ) { // hacked from false due to horrible probs on site
 553                 wfDebug( "User::isBlocked: enter\n" );
 554                 $this->getBlockedStatus( $bFromSlave );
 555                 return $this->mBlockedby !== 0;
 556         }
 557
 558         /**
 559          * Check if user is blocked from editing a particular article
 560          */
 561         function isBlockedFrom( $title, $bFromSlave = false ) {
 562                 global $wgBlockAllowsUTEdit;
 563                 $fname = 'User::isBlockedFrom';
 564                 wfProfileIn( $fname );
 565                 wfDebug( "$fname: enter\n" );
 566
 567                 if ( $wgBlockAllowsUTEdit && $title->getText() === $this->getName() &&
 568                   $title->getNamespace() == NS_USER_TALK )
 569                 {
 570                         $blocked = false;
 571                         wfDebug( "$fname: self-talk page, ignoring any blocks\n" );
 572                 } else {
 573                         wfDebug( "$fname: asking isBlocked()\n" );
 574                         $blocked = $this->isBlocked( $bFromSlave );
 575                 }
 576                 wfProfileOut( $fname );
 577                 return $blocked;
 578         }
 579
 580         /**
 581          * Get name of blocker
 582          * @return string name of blocker
 583          */
 584         function blockedBy() {
 585                 $this->getBlockedStatus();
 586                 return $this->mBlockedby;
 587         }
 588
 589         /**
 590          * Get blocking reason
 591          * @return string Blocking reason
 592          */
 593         function blockedFor() {
 594                 $this->getBlockedStatus();
 595                 return $this->mBlockreason;
 596         }
 597
 598         /**
 599          * Initialise php session
 600          */
 601         function SetupSession() {
 602                 global $wgSessionsInMemcached, $wgCookiePath, $wgCookieDomain;
 603                 if( $wgSessionsInMemcached ) {
 604                         require_once( 'MemcachedSessions.php' );
 605                 } elseif( 'files' != ini_get( 'session.save_handler' ) ) {
 606                         # If it's left on 'user' or another setting from another
 607                         # application, it will end up failing. Try to recover.
 608                         ini_set ( 'session.save_handler', 'files' );
 609                 }
 610                 session_set_cookie_params( 0, $wgCookiePath, $wgCookieDomain );
 611                 session_cache_limiter( 'private, must-revalidate' );
 612                 @session_start();
 613         }
 614
 615         /**
 616          * Create a new user object using data from session
 617          * @static
 618          */
 619         function loadFromSession() {
 620                 global $wgMemc, $wgDBname;
 621
 622                 if ( isset( $_SESSION['wsUserID'] ) ) {
 623                         if ( 0 != $_SESSION['wsUserID'] ) {
 624                                 $sId = $_SESSION['wsUserID'];
 625                         } else {
 626                                 return new User();
 627                         }
 628                 } else if ( isset( $_COOKIE["{$wgDBname}UserID"] ) ) {
 629                         $sId = intval( $_COOKIE["{$wgDBname}UserID"] );
 630                         $_SESSION['wsUserID'] = $sId;
 631                 } else {
 632                         return new User();
 633                 }
 634                 if ( isset( $_SESSION['wsUserName'] ) ) {
 635                         $sName = $_SESSION['wsUserName'];
 636                 } else if ( isset( $_COOKIE["{$wgDBname}UserName"] ) ) {
 637                         $sName = $_COOKIE["{$wgDBname}UserName"];
 638                         $_SESSION['wsUserName'] = $sName;
 639                 } else {
 640                         return new User();
 641                 }
 642
 643                 $passwordCorrect = FALSE;
 644                 $user = $wgMemc->get( $key = "$wgDBname:user:id:$sId" );
 645                 if( !is_object( $user ) || $user->mVersion < MW_USER_VERSION ) {
 646                         # Expire old serialized objects; they may be corrupt.
 647                         $user = false;
 648                 }
 649                 if($makenew = !$user) {
 650                         wfDebug( "User::loadFromSession() unable to load from memcached\n" );
 651                         $user = new User();
 652                         $user->mId = $sId;
 653                         $user->loadFromDatabase();
 654                 } else {
 655                         wfDebug( "User::loadFromSession() got from cache!\n" );
 656                 }
 657
 658                 if ( isset( $_SESSION['wsToken'] ) ) {
 659                         $passwordCorrect = $_SESSION['wsToken'] == $user->mToken;
 660                 } else if ( isset( $_COOKIE["{$wgDBname}Token"] ) ) {
 661                         $passwordCorrect = $user->mToken == $_COOKIE["{$wgDBname}Token"];
 662                 } else {
 663                         return new User(); # Can't log in from session
 664                 }
 665
 666                 if ( ( $sName == $user->mName ) && $passwordCorrect ) {
 667                         if($makenew) {
 668                                 if($wgMemc->set( $key, $user ))
 669                                         wfDebug( "User::loadFromSession() successfully saved user\n" );
 670                                 else
 671                                         wfDebug( "User::loadFromSession() unable to save to memcached\n" );
 672                         }
 673                         return $user;
 674                 }
 675                 return new User(); # Can't log in from session
 676         }
 677
 678         /**
 679          * Load a user from the database
 680          */
 681         function loadFromDatabase() {
 682                 $fname = "User::loadFromDatabase";
 683
 684                 # Counter-intuitive, breaks various things, use User::setLoaded() if you want to suppress
 685                 # loading in a command line script, don't assume all command line scripts need it like this
 686                 #if ( $this->mDataLoaded || $wgCommandLineMode ) {
 687                 if ( $this->mDataLoaded ) {
 688                         return;
 689                 }
 690
 691                 # Paranoia
 692                 $this->mId = intval( $this->mId );
 693
 694                 /** Anonymous user */
 695                 if( !$this->mId ) {
 696                         /** Get rights */
 697                         $this->mRights = $this->getGroupPermissions( array( '*' ) );
 698                         $this->mDataLoaded = true;
 699                         return;
 700                 } # the following stuff is for non-anonymous users only
 701
 702                 $dbr =& wfGetDB( DB_SLAVE );
 703                 $s = $dbr->selectRow( 'user', array( 'user_name','user_password','user_newpassword','user_email',
 704                   'user_email_authenticated',
 705                   'user_real_name','user_options','user_touched', 'user_token', 'user_registration' ),
 706                   array( 'user_id' => $this->mId ), $fname );
 707
 708                 if ( $s !== false ) {
 709                         $this->mName = $s->user_name;
 710                         $this->mEmail = $s->user_email;
 711                         $this->mEmailAuthenticated = wfTimestampOrNull( TS_MW, $s->user_email_authenticated );
 712                         $this->mRealName = $s->user_real_name;
 713                         $this->mPassword = $s->user_password;
 714                         $this->mNewpassword = $s->user_newpassword;
 715                         $this->decodeOptions( $s->user_options );
 716                         $this->mTouched = wfTimestamp(TS_MW,$s->user_touched);
 717                         $this->mToken = $s->user_token;
 718                         $this->mRegistration = wfTimestampOrNull( TS_MW, $s->user_registration );
 719
 720                         $res = $dbr->select( 'user_groups',
 721                                 array( 'ug_group' ),
 722                                 array( 'ug_user' => $this->mId ),
 723                                 $fname );
 724                         $this->mGroups = array();
 725                         while( $row = $dbr->fetchObject( $res ) ) {
 726                                 $this->mGroups[] = $row->ug_group;
 727                         }
 728                         $implicitGroups = array( '*', 'user' );
 729
 730                         global $wgAutoConfirmAge;
 731                         $accountAge = time() - wfTimestampOrNull( TS_UNIX, $this->mRegistration );
 732                         if( $accountAge >= $wgAutoConfirmAge ) {
 733                                 $implicitGroups[] = 'autoconfirmed';
 734                         }
 735
 736                         $effectiveGroups = array_merge( $implicitGroups, $this->mGroups );
 737                         $this->mRights = $this->getGroupPermissions( $effectiveGroups );
 738                 }
 739
 740                 $this->mDataLoaded = true;
 741         }
 742
 743         function getID() { return $this->mId; }
 744         function setID( $v ) {
 745                 $this->mId = $v;
 746                 $this->mDataLoaded = false;
 747         }
 748
 749         function getName() {
 750                 $this->loadFromDatabase();
 751                 if ( $this->mName === false ) {
 752                         $this->mName = wfGetIP();
 753                 }
 754                 return $this->mName;
 755         }
 756
 757         function setName( $str ) {
 758                 $this->loadFromDatabase();
 759                 $this->mName = $str;
 760         }
 761
 762
 763         /**
 764          * Return the title dbkey form of the name, for eg user pages.
 765          * @return string
 766          * @access public
 767          */
 768         function getTitleKey() {
 769                 return str_replace( ' ', '_', $this->getName() );
 770         }
 771
 772         function getNewtalk() {
 773                 $this->loadFromDatabase();
 774
 775                 # Load the newtalk status if it is unloaded (mNewtalk=-1)
 776                 if( $this->mNewtalk === -1 ) {
 777                         $this->mNewtalk = false; # reset talk page status
 778
 779                         # Check memcached separately for anons, who have no
 780                         # entire User object stored in there.
 781                         if( !$this->mId ) {
 782                                 global $wgDBname, $wgMemc;
 783                                 $key = "$wgDBname:newtalk:ip:" . $this->getName();
 784                                 $newtalk = $wgMemc->get( $key );
 785                                 if( is_integer( $newtalk ) ) {
 786                                         $this->mNewtalk = (bool)$newtalk;
 787                                 } else {
 788                                         $this->mNewtalk = $this->checkNewtalk( 'user_ip', $this->getName() );
 789                                         $wgMemc->set( $key, $this->mNewtalk, time() ); // + 1800 );
 790                                 }
 791                         } else {
 792                                 $this->mNewtalk = $this->checkNewtalk( 'user_id', $this->mId );
 793                         }
 794                 }
 795
 796                 return (bool)$this->mNewtalk;
 797         }
 798
 799         /**
 800          * Perform a user_newtalk check on current slaves; if the memcached data
 801          * is funky we don't want newtalk state to get stuck on save, as that's
 802          * damn annoying.
 803          *
 804          * @param string $field
 805          * @param mixed $id
 806          * @return bool
 807          * @access private
 808          */
 809         function checkNewtalk( $field, $id ) {
 810                 $fname = 'User::checkNewtalk';
 811                 $dbr =& wfGetDB( DB_SLAVE );
 812                 $ok = $dbr->selectField( 'user_newtalk', $field,
 813                         array( $field => $id ), $fname );
 814                 return $ok !== false;
 815         }
 816
 817         /**
 818          * Add or update the
 819          * @param string $field
 820          * @param mixed $id
 821          * @access private
 822          */
 823         function updateNewtalk( $field, $id ) {
 824                 $fname = 'User::updateNewtalk';
 825                 if( $this->checkNewtalk( $field, $id ) ) {
 826                         wfDebug( "$fname already set ($field, $id), ignoring\n" );
 827                         return false;
 828                 }
 829                 $dbw =& wfGetDB( DB_MASTER );
 830                 $dbw->insert( 'user_newtalk',
 831                         array( $field => $id ),
 832                         $fname,
 833                         'IGNORE' );
 834                 wfDebug( "$fname: set on ($field, $id)\n" );
 835                 return true;
 836         }
 837
 838         /**
 839          * Clear the new messages flag for the given user
 840          * @param string $field
 841          * @param mixed $id
 842          * @access private
 843          */
 844         function deleteNewtalk( $field, $id ) {
 845                 $fname = 'User::deleteNewtalk';
 846                 if( !$this->checkNewtalk( $field, $id ) ) {
 847                         wfDebug( "$fname: already gone ($field, $id), ignoring\n" );
 848                         return false;
 849                 }
 850                 $dbw =& wfGetDB( DB_MASTER );
 851                 $dbw->delete( 'user_newtalk',
 852                         array( $field => $id ),
 853                         $fname );
 854                 wfDebug( "$fname: killed on ($field, $id)\n" );
 855                 return true;
 856         }
 857
 858         /**
 859          * Update the 'You have new messages!' status.
 860          * @param bool $val
 861          */
 862         function setNewtalk( $val ) {
 863                 if( wfReadOnly() ) {
 864                         return;
 865                 }
 866
 867                 $this->loadFromDatabase();
 868                 $this->mNewtalk = $val;
 869
 870                 $fname = 'User::setNewtalk';
 871
 872                 if( $this->isAnon() ) {
 873                         $field = 'user_ip';
 874                         $id = $this->getName();
 875                 } else {
 876                         $field = 'user_id';
 877                         $id = $this->getId();
 878                 }
 879
 880                 if( $val ) {
 881                         $changed = $this->updateNewtalk( $field, $id );
 882                 } else {
 883                         $changed = $this->deleteNewtalk( $field, $id );
 884                 }
 885
 886                 if( $changed ) {
 887                         if( $this->isAnon() ) {
 888                                 // Anons have a separate memcached space, since
 889                                 // user records aren't kept for them.
 890                                 global $wgDBname, $wgMemc;
 891                                 $key = "$wgDBname:newtalk:ip:$val";
 892                                 $wgMemc->set( $key, $val ? 1 : 0 );
 893                         } else {
 894                                 if( $val ) {
 895                                         // Make sure the user page is watched, so a notification
 896                                         // will be sent out if enabled.
 897                                         $this->addWatch( $this->getTalkPage() );
 898                                 }
 899                         }
 900                         $this->invalidateCache();
 901                         $this->saveSettings();
 902                 }
 903         }
 904
 905         function invalidateCache() {
 906                 global $wgClockSkewFudge;
 907                 $this->loadFromDatabase();
 908                 $this->mTouched = wfTimestamp(TS_MW, time() + $wgClockSkewFudge );
 909                 # Don't forget to save the options after this or
 910                 # it won't take effect!
 911         }
 912
 913         function validateCache( $timestamp ) {
 914                 $this->loadFromDatabase();
 915                 return ($timestamp >= $this->mTouched);
 916         }
 917
 918         /**
 919          * Encrypt a password.
 920          * It can eventuall salt a password @see User::addSalt()
 921          * @param string $p clear Password.
 922          * @return string Encrypted password.
 923          */
 924         function encryptPassword( $p ) {
 925                 return wfEncryptPassword( $this->mId, $p );
 926         }
 927
 928         # Set the password and reset the random token
 929         function setPassword( $str ) {
 930                 $this->loadFromDatabase();
 931                 $this->setToken();
 932                 $this->mPassword = $this->encryptPassword( $str );
 933                 $this->mNewpassword = '';
 934         }
 935
 936         # Set the random token (used for persistent authentication)
 937         function setToken( $token = false ) {
 938                 global $wgSecretKey, $wgProxyKey, $wgDBname;
 939                 if ( !$token ) {
 940                         if ( $wgSecretKey ) {
 941                                 $key = $wgSecretKey;
 942                         } elseif ( $wgProxyKey ) {
 943                                 $key = $wgProxyKey;
 944                         } else {
 945                                 $key = microtime();
 946                         }
 947                         $this->mToken = md5( $key . mt_rand( 0, 0x7fffffff ) . $wgDBname . $this->mId );
 948                 } else {
 949                         $this->mToken = $token;
 950                 }
 951         }
 952
 953
 954         function setCookiePassword( $str ) {
 955                 $this->loadFromDatabase();
 956                 $this->mCookiePassword = md5( $str );
 957         }
 958
 959         function setNewpassword( $str ) {
 960                 $this->loadFromDatabase();
 961                 $this->mNewpassword = $this->encryptPassword( $str );
 962         }
 963
 964         function getEmail() {
 965                 $this->loadFromDatabase();
 966                 return $this->mEmail;
 967         }
 968
 969         function getEmailAuthenticationTimestamp() {
 970                 $this->loadFromDatabase();
 971                 return $this->mEmailAuthenticated;
 972         }
 973
 974         function setEmail( $str ) {
 975                 $this->loadFromDatabase();
 976                 $this->mEmail = $str;
 977         }
 978
 979         function getRealName() {
 980                 $this->loadFromDatabase();
 981                 return $this->mRealName;
 982         }
 983
 984         function setRealName( $str ) {
 985                 $this->loadFromDatabase();
 986                 $this->mRealName = $str;
 987         }
 988
 989         /**
 990          * @param string $oname The option to check
 991          * @return string
 992          */
 993         function getOption( $oname ) {
 994                 $this->loadFromDatabase();
 995                 if ( array_key_exists( $oname, $this->mOptions ) ) {
 996                         return trim( $this->mOptions[$oname] );
 997                 } else {
 998                         return '';
 999                 }
1000         }
1001
1002         /**
1003          * @param string $oname The option to check
1004          * @return bool False if the option is not selected, true if it is
1005          */
1006         function getBoolOption( $oname ) {
1007                 return (bool)$this->getOption( $oname );
1008         }
1009
1010         function setOption( $oname, $val ) {
1011                 $this->loadFromDatabase();
1012                 if ( $oname == 'skin' ) {
1013                         # Clear cached skin, so the new one displays immediately in Special:Preferences
1014                         unset( $this->mSkin );
1015                 }
1016                 $this->mOptions[$oname] = $val;
1017                 $this->invalidateCache();
1018         }
1019
1020         function getRights() {
1021                 $this->loadFromDatabase();
1022                 return $this->mRights;
1023         }
1024
1025         /**
1026          * Get the list of explicit group memberships this user has.
1027          * The implicit * and user groups are not included.
1028          * @return array of strings
1029          */
1030         function getGroups() {
1031                 $this->loadFromDatabase();
1032                 return $this->mGroups;
1033         }
1034
1035         /**
1036          * Get the list of implicit group memberships this user has.
1037          * This includes all explicit groups, plus 'user' if logged in
1038          * and '*' for all accounts.
1039          * @return array of strings
1040          */
1041         function getEffectiveGroups() {
1042                 $base = array( '*' );
1043                 if( $this->isLoggedIn() ) {
1044                         $base[] = 'user';
1045                 }
1046                 return array_merge( $base, $this->getGroups() );
1047         }
1048
1049         /**
1050          * Add the user to the given group.
1051          * This takes immediate effect.
1052          * @string $group
1053          */
1054         function addGroup( $group ) {
1055                 $dbw =& wfGetDB( DB_MASTER );
1056                 $dbw->insert( 'user_groups',
1057                         array(
1058                                 'ug_user'  => $this->getID(),
1059                                 'ug_group' => $group,
1060                         ),
1061                         'User::addGroup',
1062                         array( 'IGNORE' ) );
1063
1064                 $this->mGroups = array_merge( $this->mGroups, array( $group ) );
1065                 $this->mRights = User::getGroupPermissions( $this->getEffectiveGroups() );
1066
1067                 $this->invalidateCache();
1068                 $this->saveSettings();
1069         }
1070
1071         /**
1072          * Remove the user from the given group.
1073          * This takes immediate effect.
1074          * @string $group
1075          */
1076         function removeGroup( $group ) {
1077                 $dbw =& wfGetDB( DB_MASTER );
1078                 $dbw->delete( 'user_groups',
1079                         array(
1080                                 'ug_user'  => $this->getID(),
1081                                 'ug_group' => $group,
1082                         ),
1083                         'User::removeGroup' );
1084
1085                 $this->mGroups = array_diff( $this->mGroups, array( $group ) );
1086                 $this->mRights = User::getGroupPermissions( $this->getEffectiveGroups() );
1087
1088                 $this->invalidateCache();
1089                 $this->saveSettings();
1090         }
1091
1092
1093         /**
1094          * A more legible check for non-anonymousness.
1095          * Returns true if the user is not an anonymous visitor.
1096          *
1097          * @return bool
1098          */
1099         function isLoggedIn() {
1100                 return( $this->getID() != 0 );
1101         }
1102
1103         /**
1104          * A more legible check for anonymousness.
1105          * Returns true if the user is an anonymous visitor.
1106          *
1107          * @return bool
1108          */
1109         function isAnon() {
1110                 return !$this->isLoggedIn();
1111         }
1112
1113         /**
1114          * Check if a user is sysop
1115          * @deprecated
1116          */
1117         function isSysop() {
1118                 return $this->isAllowed( 'protect' );
1119         }
1120
1121         /** @deprecated */
1122         function isDeveloper() {
1123                 return $this->isAllowed( 'siteadmin' );
1124         }
1125
1126         /** @deprecated */
1127         function isBureaucrat() {
1128                 return $this->isAllowed( 'makesysop' );
1129         }
1130
1131         /**
1132          * Whether the user is a bot
1133          * @todo need to be migrated to the new user level management sytem
1134          */
1135         function isBot() {
1136                 $this->loadFromDatabase();
1137                 return in_array( 'bot', $this->mRights );
1138         }
1139
1140         /**
1141          * Check if user is allowed to access a feature / make an action
1142          * @param string $action Action to be checked (see $wgAvailableRights in Defines.php for possible actions).
1143          * @return boolean True: action is allowed, False: action should not be allowed
1144          */
1145         function isAllowed($action='') {
1146                 if ( $action === '' )
1147                         // In the spirit of DWIM
1148                         return true;
1149
1150                 $this->loadFromDatabase();
1151                 return in_array( $action , $this->mRights );
1152         }
1153
1154         /**
1155          * Load a skin if it doesn't exist or return it
1156          * @todo FIXME : need to check the old failback system [AV]
1157          */
1158         function &getSkin() {
1159                 global $IP, $wgRequest;
1160                 if ( ! isset( $this->mSkin ) ) {
1161                         $fname = 'User::getSkin';
1162                         wfProfileIn( $fname );
1163
1164                         # get the user skin
1165                         $userSkin = $this->getOption( 'skin' );
1166                         $userSkin = $wgRequest->getVal('useskin', $userSkin);
1167
1168                         $this->mSkin =& Skin::newFromKey( $userSkin );
1169                         wfProfileOut( $fname );
1170                 }
1171                 return $this->mSkin;
1172         }
1173
1174         /**#@+
1175          * @param string $title Article title to look at
1176          */
1177
1178         /**
1179          * Check watched status of an article
1180          * @return bool True if article is watched
1181          */
1182         function isWatched( $title ) {
1183                 $wl = WatchedItem::fromUserTitle( $this, $title );
1184                 return $wl->isWatched();
1185         }
1186
1187         /**
1188          * Watch an article
1189          */
1190         function addWatch( $title ) {
1191                 $wl = WatchedItem::fromUserTitle( $this, $title );
1192                 $wl->addWatch();
1193                 $this->invalidateCache();
1194         }
1195
1196         /**
1197          * Stop watching an article
1198          */
1199         function removeWatch( $title ) {
1200                 $wl = WatchedItem::fromUserTitle( $this, $title );
1201                 $wl->removeWatch();
1202                 $this->invalidateCache();
1203         }
1204
1205         /**
1206          * Clear the user's notification timestamp for the given title.
1207          * If e-notif e-mails are on, they will receive notification mails on
1208          * the next change of the page if it's watched etc.
1209          */
1210         function clearNotification( &$title ) {
1211                 global $wgUser, $wgUseEnotif;
1212
1213                 if ($title->getNamespace() == NS_USER_TALK &&
1214                         $title->getText() == $this->getName() ) {
1215                         $this->setNewtalk( false );
1216                 }
1217
1218                 if( !$wgUseEnotif ) {
1219                         return;
1220                 }
1221
1222                 if( $this->isAnon() ) {
1223                         // Nothing else to do...
1224                         return;
1225                 }
1226
1227                 // Only update the timestamp if the page is being watched.
1228                 // The query to find out if it is watched is cached both in memcached and per-invocation,
1229                 // and when it does have to be executed, it can be on a slave
1230                 // If this is the user's newtalk page, we always update the timestamp
1231                 if ($title->getNamespace() == NS_USER_TALK &&
1232                         $title->getText() == $wgUser->getName())
1233                 {
1234                         $watched = true;
1235                 } elseif ( $this->getID() == $wgUser->getID() ) {
1236                         $watched = $title->userIsWatching();
1237                 } else {
1238                         $watched = true;
1239                 }
1240
1241                 // If the page is watched by the user (or may be watched), update the timestamp on any
1242                 // any matching rows
1243                 if ( $watched ) {
1244                         $dbw =& wfGetDB( DB_MASTER );
1245                         $success = $dbw->update( 'watchlist',
1246                                         array( /* SET */
1247                                                 'wl_notificationtimestamp' => NULL
1248                                         ), array( /* WHERE */
1249                                                 'wl_title' => $title->getDBkey(),
1250                                                 'wl_namespace' => $title->getNamespace(),
1251                                                 'wl_user' => $this->getID()
1252                                         ), 'User::clearLastVisited'
1253                         );
1254                 }
1255         }
1256
1257         /**#@-*/
1258
1259         /**
1260          * Resets all of the given user's page-change notification timestamps.
1261          * If e-notif e-mails are on, they will receive notification mails on
1262          * the next change of any watched page.
1263          *
1264          * @param int $currentUser user ID number
1265          * @access public
1266          */
1267         function clearAllNotifications( $currentUser ) {
1268                 global $wgUseEnotif;
1269                 if ( !$wgUseEnotif ) {
1270                         $this->setNewtalk( false );
1271                         return;
1272                 }
1273                 if( $currentUser != 0 )  {
1274
1275                         $dbw =& wfGetDB( DB_MASTER );
1276                         $success = $dbw->update( 'watchlist',
1277                                 array( /* SET */
1278                                         'wl_notificationtimestamp' => 0
1279                                 ), array( /* WHERE */
1280                                         'wl_user' => $currentUser
1281                                 ), 'UserMailer::clearAll'
1282                         );
1283
1284                 #       we also need to clear here the "you have new message" notification for the own user_talk page
1285                 #       This is cleared one page view later in Article::viewUpdates();
1286                 }
1287         }
1288
1289         /**
1290          * @access private
1291          * @return string Encoding options
1292          */
1293         function encodeOptions() {
1294                 $a = array();
1295                 foreach ( $this->mOptions as $oname => $oval ) {
1296                         array_push( $a, $oname.'='.$oval );
1297                 }
1298                 $s = implode( "\n", $a );
1299                 return $s;
1300         }
1301
1302         /**
1303          * @access private
1304          */
1305         function decodeOptions( $str ) {
1306                 $a = explode( "\n", $str );
1307                 foreach ( $a as $s ) {
1308                         if ( preg_match( "/^(.[^=]*)=(.*)$/", $s, $m ) ) {
1309                                 $this->mOptions[$m[1]] = $m[2];
1310                         }
1311                 }
1312         }
1313
1314         function setCookies() {
1315                 global $wgCookieExpiration, $wgCookiePath, $wgCookieDomain, $wgCookieSecure, $wgDBname;
1316                 if ( 0 == $this->mId ) return;
1317                 $this->loadFromDatabase();
1318                 $exp = time() + $wgCookieExpiration;
1319
1320                 $_SESSION['wsUserID'] = $this->mId;
1321                 setcookie( $wgDBname.'UserID', $this->mId, $exp, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1322
1323                 $_SESSION['wsUserName'] = $this->getName();
1324                 setcookie( $wgDBname.'UserName', $this->getName(), $exp, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1325
1326                 $_SESSION['wsToken'] = $this->mToken;
1327                 if ( 1 == $this->getOption( 'rememberpassword' ) ) {
1328                         setcookie( $wgDBname.'Token', $this->mToken, $exp, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1329                 } else {
1330                         setcookie( $wgDBname.'Token', '', time() - 3600 );
1331                 }
1332         }
1333
1334         /**
1335          * Logout user
1336          * It will clean the session cookie
1337          */
1338         function logout() {
1339                 global $wgCookiePath, $wgCookieDomain, $wgCookieSecure, $wgDBname;
1340                 $this->loadDefaults();
1341                 $this->setLoaded( true );
1342
1343                 $_SESSION['wsUserID'] = 0;
1344
1345                 setcookie( $wgDBname.'UserID', '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1346                 setcookie( $wgDBname.'Token', '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1347
1348                 # Remember when user logged out, to prevent seeing cached pages
1349                 setcookie( $wgDBname.'LoggedOut', wfTimestampNow(), time() + 86400, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1350         }
1351
1352         /**
1353          * Save object settings into database
1354          */
1355         function saveSettings() {
1356                 global $wgMemc, $wgDBname, $wgUseEnotif;
1357                 $fname = 'User::saveSettings';
1358
1359                 if ( wfReadOnly() ) { return; }
1360                 if ( 0 == $this->mId ) { return; }
1361
1362                 $dbw =& wfGetDB( DB_MASTER );
1363                 $dbw->update( 'user',
1364                         array( /* SET */
1365                                 'user_name' => $this->mName,
1366                                 'user_password' => $this->mPassword,
1367                                 'user_newpassword' => $this->mNewpassword,
1368                                 'user_real_name' => $this->mRealName,
1369                                 'user_email' => $this->mEmail,
1370                                 'user_email_authenticated' => $dbw->timestampOrNull( $this->mEmailAuthenticated ),
1371                                 'user_options' => $this->encodeOptions(),
1372                                 'user_touched' => $dbw->timestamp($this->mTouched),
1373                                 'user_token' => $this->mToken
1374                         ), array( /* WHERE */
1375                                 'user_id' => $this->mId
1376                         ), $fname
1377                 );
1378                 $wgMemc->delete( "$wgDBname:user:id:$this->mId" );
1379         }
1380
1381
1382         /**
1383          * Checks if a user with the given name exists, returns the ID
1384          */
1385         function idForName() {
1386                 $fname = 'User::idForName';
1387
1388                 $gotid = 0;
1389                 $s = trim( $this->getName() );
1390                 if ( 0 == strcmp( '', $s ) ) return 0;
1391
1392                 $dbr =& wfGetDB( DB_SLAVE );
1393                 $id = $dbr->selectField( 'user', 'user_id', array( 'user_name' => $s ), $fname );
1394                 if ( $id === false ) {
1395                         $id = 0;
1396                 }
1397                 return $id;
1398         }
1399
1400         /**
1401          * Add user object to the database
1402          */
1403         function addToDatabase() {
1404                 $fname = 'User::addToDatabase';
1405                 $dbw =& wfGetDB( DB_MASTER );
1406                 $seqVal = $dbw->nextSequenceValue( 'user_user_id_seq' );
1407                 $dbw->insert( 'user',
1408                         array(
1409                                 'user_id' => $seqVal,
1410                                 'user_name' => $this->mName,
1411                                 'user_password' => $this->mPassword,
1412                                 'user_newpassword' => $this->mNewpassword,
1413                                 'user_email' => $this->mEmail,
1414                                 'user_email_authenticated' => $dbw->timestampOrNull( $this->mEmailAuthenticated ),
1415                                 'user_real_name' => $this->mRealName,
1416                                 'user_options' => $this->encodeOptions(),
1417                                 'user_token' => $this->mToken,
1418                                 'user_registration' => $dbw->timestamp( $this->mRegistration ),
1419                         ), $fname
1420                 );
1421                 $this->mId = $dbw->insertId();
1422         }
1423
1424         function spreadBlock() {
1425                 # If the (non-anonymous) user is blocked, this function will block any IP address
1426                 # that they successfully log on from.
1427                 $fname = 'User::spreadBlock';
1428
1429                 wfDebug( "User:spreadBlock()\n" );
1430                 if ( $this->mId == 0 ) {
1431                         return;
1432                 }
1433
1434                 $userblock = Block::newFromDB( '', $this->mId );
1435                 if ( !$userblock->isValid() ) {
1436                         return;
1437                 }
1438
1439                 # Check if this IP address is already blocked
1440                 $ipblock = Block::newFromDB( wfGetIP() );
1441                 if ( $ipblock->isValid() ) {
1442                         # If the user is already blocked. Then check if the autoblock would
1443                         # excede the user block. If it would excede, then do nothing, else
1444                         # prolong block time
1445                         if ($userblock->mExpiry &&
1446                                 ($userblock->mExpiry < Block::getAutoblockExpiry($ipblock->mTimestamp))) {
1447                                 return;
1448                         }
1449                         # Just update the timestamp
1450                         $ipblock->updateTimestamp();
1451                         return;
1452                 }
1453
1454                 # Make a new block object with the desired properties
1455                 wfDebug( "Autoblocking {$this->mName}@" . wfGetIP() . "\n" );
1456                 $ipblock->mAddress = wfGetIP();
1457                 $ipblock->mUser = 0;
1458                 $ipblock->mBy = $userblock->mBy;
1459                 $ipblock->mReason = wfMsg( 'autoblocker', $this->getName(), $userblock->mReason );
1460                 $ipblock->mTimestamp = wfTimestampNow();
1461                 $ipblock->mAuto = 1;
1462                 # If the user is already blocked with an expiry date, we don't
1463                 # want to pile on top of that!
1464                 if($userblock->mExpiry) {
1465                         $ipblock->mExpiry = min ( $userblock->mExpiry, Block::getAutoblockExpiry( $ipblock->mTimestamp ));
1466                 } else {
1467                         $ipblock->mExpiry = Block::getAutoblockExpiry( $ipblock->mTimestamp );
1468                 }
1469
1470                 # Insert it
1471                 $ipblock->insert();
1472
1473         }
1474
1475         /**
1476          * Generate a string which will be different for any combination of
1477          * user options which would produce different parser output.
1478          * This will be used as part of the hash key for the parser cache,
1479          * so users will the same options can share the same cached data
1480          * safely.
1481          *
1482          * Extensions which require it should install 'PageRenderingHash' hook,
1483          * which will give them a chance to modify this key based on their own
1484          * settings.
1485          *
1486          * @return string
1487          */
1488         function getPageRenderingHash() {
1489                 global $wgContLang;
1490                 if( $this->mHash ){
1491                         return $this->mHash;
1492                 }
1493
1494                 // stubthreshold is only included below for completeness,
1495                 // it will always be 0 when this function is called by parsercache.
1496
1497                 $confstr =        $this->getOption( 'math' );
1498                 $confstr .= '!' . $this->getOption( 'stubthreshold' );
1499                 $confstr .= '!' . $this->getOption( 'date' );
1500                 $confstr .= '!' . ($this->getOption( 'numberheadings' ) ? '1' : '');
1501                 $confstr .= '!' . $this->getOption( 'language' );
1502                 $confstr .= '!' . $this->getOption( 'thumbsize' );
1503                 // add in language specific options, if any
1504                 $extra = $wgContLang->getExtraHashOptions();
1505                 $confstr .= $extra;
1506
1507                 // Give a chance for extensions to modify the hash, if they have
1508                 // extra options or other effects on the parser cache.
1509                 wfRunHooks( 'PageRenderingHash', array( &$confstr ) );
1510
1511                 $this->mHash = $confstr;
1512                 return $confstr;
1513         }
1514
1515         function isAllowedToCreateAccount() {
1516                 return $this->isAllowed( 'createaccount' ) && !$this->isBlocked();
1517         }
1518
1519         /**
1520          * Set mDataLoaded, return previous value
1521          * Use this to prevent DB access in command-line scripts or similar situations
1522          */
1523         function setLoaded( $loaded ) {
1524                 return wfSetVar( $this->mDataLoaded, $loaded );
1525         }
1526
1527         /**
1528          * Get this user's personal page title.
1529          *
1530          * @return Title
1531          * @access public
1532          */
1533         function getUserPage() {
1534                 return Title::makeTitle( NS_USER, $this->getName() );
1535         }
1536
1537         /**
1538          * Get this user's talk page title.
1539          *
1540          * @return Title
1541          * @access public
1542          */
1543         function getTalkPage() {
1544                 $title = $this->getUserPage();
1545                 return $title->getTalkPage();
1546         }
1547
1548         /**
1549          * @static
1550          */
1551         function getMaxID() {
1552                 static $res; // cache
1553
1554                 if ( isset( $res ) )
1555                         return $res;
1556                 else {
1557                         $dbr =& wfGetDB( DB_SLAVE );
1558                         return $res = $dbr->selectField( 'user', 'max(user_id)', false, 'User::getMaxID' );
1559                 }
1560         }
1561
1562         /**
1563          * Determine whether the user is a newbie. Newbies are either
1564          * anonymous IPs, or the most recently created accounts.
1565          * @return bool True if it is a newbie.
1566          */
1567         function isNewbie() {
1568                 return !$this->isAllowed( 'autoconfirmed' );
1569         }
1570
1571         /**
1572          * Check to see if the given clear-text password is one of the accepted passwords
1573          * @param string $password User password.
1574          * @return bool True if the given password is correct otherwise False.
1575          */
1576         function checkPassword( $password ) {
1577                 global $wgAuth, $wgMinimalPasswordLength;
1578                 $this->loadFromDatabase();
1579
1580                 // Even though we stop people from creating passwords that
1581                 // are shorter than this, doesn't mean people wont be able
1582                 // to. Certain authentication plugins do NOT want to save
1583                 // domain passwords in a mysql database, so we should
1584                 // check this (incase $wgAuth->strict() is false).
1585                 if( strlen( $password ) < $wgMinimalPasswordLength ) {
1586                         return false;
1587                 }
1588
1589                 if( $wgAuth->authenticate( $this->getName(), $password ) ) {
1590                         return true;
1591                 } elseif( $wgAuth->strict() ) {
1592                         /* Auth plugin doesn't allow local authentication */
1593                         return false;
1594                 }
1595                 $ep = $this->encryptPassword( $password );
1596                 if ( 0 == strcmp( $ep, $this->mPassword ) ) {
1597                         return true;
1598                 } elseif ( ($this->mNewpassword != '') && (0 == strcmp( $ep, $this->mNewpassword )) ) {
1599                         return true;
1600                 } elseif ( function_exists( 'iconv' ) ) {
1601                         # Some wikis were converted from ISO 8859-1 to UTF-8, the passwords can't be converted
1602                         # Check for this with iconv
1603                         $cp1252hash = $this->encryptPassword( iconv( 'UTF-8', 'WINDOWS-1252', $password ) );
1604                         if ( 0 == strcmp( $cp1252hash, $this->mPassword ) ) {
1605                                 return true;
1606                         }
1607                 }
1608                 return false;
1609         }
1610
1611         /**
1612          * Initialize (if necessary) and return a session token value
1613          * which can be used in edit forms to show that the user's
1614          * login credentials aren't being hijacked with a foreign form
1615          * submission.
1616          *
1617          * @param mixed $salt - Optional function-specific data for hash.
1618          *                      Use a string or an array of strings.
1619          * @return string
1620          * @access public
1621          */
1622         function editToken( $salt = '' ) {
1623                 if( !isset( $_SESSION['wsEditToken'] ) ) {
1624                         $token = $this->generateToken();
1625                         $_SESSION['wsEditToken'] = $token;
1626                 } else {
1627                         $token = $_SESSION['wsEditToken'];
1628                 }
1629                 if( is_array( $salt ) ) {
1630                         $salt = implode( '|', $salt );
1631                 }
1632                 return md5( $token . $salt );
1633         }
1634
1635         /**
1636          * Generate a hex-y looking random token for various uses.
1637          * Could be made more cryptographically sure if someone cares.
1638          * @return string
1639          */
1640         function generateToken( $salt = '' ) {
1641                 $token = dechex( mt_rand() ) . dechex( mt_rand() );
1642                 return md5( $token . $salt );
1643         }
1644
1645         /**
1646          * Check given value against the token value stored in the session.
1647          * A match should confirm that the form was submitted from the
1648          * user's own login session, not a form submission from a third-party
1649          * site.
1650          *
1651          * @param string $val - the input value to compare
1652          * @param string $salt - Optional function-specific data for hash
1653          * @return bool
1654          * @access public
1655          */
1656         function matchEditToken( $val, $salt = '' ) {
1657                 global $wgMemc;
1658
1659 /*
1660                 if ( !isset( $_SESSION['wsEditToken'] ) ) {
1661                         $logfile = '/home/wikipedia/logs/session_debug/session.log';
1662                         $mckey = memsess_key( session_id() );
1663                         $uname = @posix_uname();
1664                         $msg = "wsEditToken not set!\n" .
1665                         'apache server=' . $uname['nodename'] . "\n" .
1666                         'session_id = ' . session_id() . "\n" .
1667                         '$_SESSION=' . var_export( $_SESSION, true ) . "\n" .
1668                         '$_COOKIE=' . var_export( $_COOKIE, true ) . "\n" .
1669                         "mc get($mckey) = " . var_export( $wgMemc->get( $mckey ), true ) . "\n\n\n";
1670
1671                         @error_log( $msg, 3, $logfile );
1672                 }
1673 */
1674                 return ( $val == $this->editToken( $salt ) );
1675         }
1676
1677         /**
1678          * Generate a new e-mail confirmation token and send a confirmation
1679          * mail to the user's given address.
1680          *
1681          * @return mixed True on success, a WikiError object on failure.
1682          */
1683         function sendConfirmationMail() {
1684                 global $wgContLang;
1685                 $url = $this->confirmationTokenUrl( $expiration );
1686                 return $this->sendMail( wfMsg( 'confirmemail_subject' ),
1687                         wfMsg( 'confirmemail_body',
1688                                 wfGetIP(),
1689                                 $this->getName(),
1690                                 $url,
1691                                 $wgContLang->timeanddate( $expiration, false ) ) );
1692         }
1693
1694         /**
1695          * Send an e-mail to this user's account. Does not check for
1696          * confirmed status or validity.
1697          *
1698          * @param string $subject
1699          * @param string $body
1700          * @param strong $from Optional from address; default $wgPasswordSender will be used otherwise.
1701          * @return mixed True on success, a WikiError object on failure.
1702          */
1703         function sendMail( $subject, $body, $from = null ) {
1704                 if( is_null( $from ) ) {
1705                         global $wgPasswordSender;
1706                         $from = $wgPasswordSender;
1707                 }
1708
1709                 require_once( 'UserMailer.php' );
1710                 $to = new MailAddress( $this );
1711                 $sender = new MailAddress( $from );
1712                 $error = userMailer( $to, $sender, $subject, $body );
1713
1714                 if( $error == '' ) {
1715                         return true;
1716                 } else {
1717                         return new WikiError( $error );
1718                 }
1719         }
1720
1721         /**
1722          * Generate, store, and return a new e-mail confirmation code.
1723          * A hash (unsalted since it's used as a key) is stored.
1724          * @param &$expiration mixed output: accepts the expiration time
1725          * @return string
1726          * @access private
1727          */
1728         function confirmationToken( &$expiration ) {
1729                 $fname = 'User::confirmationToken';
1730
1731                 $now = time();
1732                 $expires = $now + 7 * 24 * 60 * 60;
1733                 $expiration = wfTimestamp( TS_MW, $expires );
1734
1735                 $token = $this->generateToken( $this->mId . $this->mEmail . $expires );
1736                 $hash = md5( $token );
1737
1738                 $dbw =& wfGetDB( DB_MASTER );
1739                 $dbw->update( 'user',
1740                         array( 'user_email_token'         => $hash,
1741                                'user_email_token_expires' => $dbw->timestamp( $expires ) ),
1742                         array( 'user_id'                  => $this->mId ),
1743                         $fname );
1744
1745                 return $token;
1746         }
1747
1748         /**
1749          * Generate and store a new e-mail confirmation token, and return
1750          * the URL the user can use to confirm.
1751          * @param &$expiration mixed output: accepts the expiration time
1752          * @return string
1753          * @access private
1754          */
1755         function confirmationTokenUrl( &$expiration ) {
1756                 $token = $this->confirmationToken( $expiration );
1757                 $title = Title::makeTitle( NS_SPECIAL, 'Confirmemail/' . $token );
1758                 return $title->getFullUrl();
1759         }
1760
1761         /**
1762          * Mark the e-mail address confirmed and save.
1763          */
1764         function confirmEmail() {
1765                 $this->loadFromDatabase();
1766                 $this->mEmailAuthenticated = wfTimestampNow();
1767                 $this->saveSettings();
1768                 return true;
1769         }
1770
1771         /**
1772          * Is this user allowed to send e-mails within limits of current
1773          * site configuration?
1774          * @return bool
1775          */
1776         function canSendEmail() {
1777                 return $this->isEmailConfirmed();
1778         }
1779
1780         /**
1781          * Is this user allowed to receive e-mails within limits of current
1782          * site configuration?
1783          * @return bool
1784          */
1785         function canReceiveEmail() {
1786                 return $this->canSendEmail() && !$this->getOption( 'disablemail' );
1787         }
1788
1789         /**
1790          * Is this user's e-mail address valid-looking and confirmed within
1791          * limits of the current site configuration?
1792          *
1793          * If $wgEmailAuthentication is on, this may require the user to have
1794          * confirmed their address by returning a code or using a password
1795          * sent to the address from the wiki.
1796          *
1797          * @return bool
1798          */
1799         function isEmailConfirmed() {
1800                 global $wgEmailAuthentication;
1801                 $this->loadFromDatabase();
1802                 if( $this->isAnon() )
1803                         return false;
1804                 if( !$this->isValidEmailAddr( $this->mEmail ) )
1805                         return false;
1806                 if( $wgEmailAuthentication && !$this->getEmailAuthenticationTimestamp() )
1807                         return false;
1808                 return true;
1809         }
1810
1811         /**
1812          * @param array $groups list of groups
1813          * @return array list of permission key names for given groups combined
1814          * @static
1815          */
1816         function getGroupPermissions( $groups ) {
1817                 global $wgGroupPermissions;
1818                 $rights = array();
1819                 foreach( $groups as $group ) {
1820                         if( isset( $wgGroupPermissions[$group] ) ) {
1821                                 $rights = array_merge( $rights,
1822                                         array_keys( array_filter( $wgGroupPermissions[$group] ) ) );
1823                         }
1824                 }
1825                 return $rights;
1826         }
1827
1828         /**
1829          * @param string $group key name
1830          * @return string localized descriptive name, if provided
1831          * @static
1832          */
1833         function getGroupName( $group ) {
1834                 $key = "group-$group-name";
1835                 $name = wfMsg( $key );
1836                 if( $name == '' || $name == "&lt;$key&gt;" ) {
1837                         return $group;
1838                 } else {
1839                         return $name;
1840                 }
1841         }
1842
1843         /**
1844          * Return the set of defined explicit groups.
1845          * The * and 'user' groups are not included.
1846          * @return array
1847          * @static
1848          */
1849         function getAllGroups() {
1850                 global $wgGroupPermissions;
1851                 return array_diff(
1852                         array_keys( $wgGroupPermissions ),
1853                         array( '*', 'user', 'autoconfirmed' ) );
1854         }
1855 }
1856
1857 ?>