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', 2 );
  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
  40         /** Construct using User:loadDefaults() */
  41         function User() {
  42                 $this->loadDefaults();
  43                 $this->mVersion = MW_USER_VERSION;
  44         }
  45
  46         /**
  47          * Static factory method
  48          * @param string $name Username, validated by Title:newFromText()
  49          * @return User
  50          * @static
  51          */
  52         function newFromName( $name ) {
  53                 # Force usernames to capital
  54                 global $wgContLang;
  55                 $name = $wgContLang->ucfirst( $name );
  56
  57                 # Clean up name according to title rules
  58                 $t = Title::newFromText( $name );
  59                 if( is_null( $t ) ) {
  60                         return null;
  61                 }
  62
  63                 # Reject various classes of invalid names
  64                 $canonicalName = $t->getText();
  65                 global $wgAuth;
  66                 $canonicalName = $wgAuth->getCanonicalName( $t->getText() );
  67
  68                 if( !User::isValidUserName( $canonicalName ) ) {
  69                         return null;
  70                 }
  71
  72                 $u = new User();
  73                 $u->setName( $canonicalName );
  74                 $u->setId( $u->idFromName( $canonicalName ) );
  75                 return $u;
  76         }
  77
  78         /**
  79          * Factory method to fetch whichever use has a given email confirmation code.
  80          * This code is generated when an account is created or its e-mail address
  81          * has changed.
  82          *
  83          * If the code is invalid or has expired, returns NULL.
  84          *
  85          * @param string $code
  86          * @return User
  87          * @static
  88          */
  89         function newFromConfirmationCode( $code ) {
  90                 $dbr =& wfGetDB( DB_SLAVE );
  91                 $name = $dbr->selectField( 'user', 'user_name', array(
  92                         'user_email_token' => md5( $code ),
  93                         'user_email_token_expires > ' . $dbr->addQuotes( $dbr->timestamp() ),
  94                         ) );
  95                 if( is_string( $name ) ) {
  96                         return User::newFromName( $name );
  97                 } else {
  98                         return null;
  99                 }
 100         }
 101
 102         /**
 103          * Serialze sleep function, for better cache efficiency and avoidance of
 104          * silly "incomplete type" errors when skins are cached
 105          */
 106         function __sleep() {
 107                 return array( 'mId', 'mName', 'mPassword', 'mEmail', 'mNewtalk',
 108                         'mEmailAuthenticated', 'mRights', 'mOptions', 'mDataLoaded',
 109                         'mNewpassword', 'mBlockedby', 'mBlockreason', 'mTouched',
 110                         'mToken', 'mRealName', 'mHash', 'mGroups' );
 111         }
 112
 113         /**
 114          * Get username given an id.
 115          * @param integer $id Database user id
 116          * @return string Nickname of a user
 117          * @static
 118          */
 119         function whoIs( $id )   {
 120                 $dbr =& wfGetDB( DB_SLAVE );
 121                 return $dbr->selectField( 'user', 'user_name', array( 'user_id' => $id ), 'User::whoIs' );
 122         }
 123
 124         /**
 125          * Get real username given an id.
 126          * @param integer $id Database user id
 127          * @return string Realname of a user
 128          * @static
 129          */
 130         function whoIsReal( $id )       {
 131                 $dbr =& wfGetDB( DB_SLAVE );
 132                 return $dbr->selectField( 'user', 'user_real_name', array( 'user_id' => $id ), 'User::whoIsReal' );
 133         }
 134
 135         /**
 136          * Get database id given a user name
 137          * @param string $name Nickname of a user
 138          * @return integer|null Database user id (null: if non existent
 139          * @static
 140          */
 141         function idFromName( $name ) {
 142                 $fname = "User::idFromName";
 143
 144                 $nt = Title::newFromText( $name );
 145                 if( is_null( $nt ) ) {
 146                         # Illegal name
 147                         return null;
 148                 }
 149                 $dbr =& wfGetDB( DB_SLAVE );
 150                 $s = $dbr->selectRow( 'user', array( 'user_id' ), array( 'user_name' => $nt->getText() ), $fname );
 151
 152                 if ( $s === false ) {
 153                         return 0;
 154                 } else {
 155                         return $s->user_id;
 156                 }
 157         }
 158
 159         /**
 160          * does the string match an anonymous IPv4 address?
 161          *
 162          * Note: We match \d{1,3}\.\d{1,3}\.\d{1,3}\.xxx as an anonymous IP
 163          * address because the usemod software would "cloak" anonymous IP
 164          * addresses like this, if we allowed accounts like this to be created
 165          * new users could get the old edits of these anonymous users.
 166          *
 167          * @bug 3631
 168          *
 169          * @static
 170          * @param string $name Nickname of a user
 171          * @return bool
 172          */
 173         function isIP( $name ) {
 174                 return preg_match("/^\d{1,3}\.\d{1,3}\.\d{1,3}\.(?:xxx|\d{1,3})$/",$name);
 175                 /*return preg_match("/^
 176                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 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                 $/x", $name);*/
 181         }
 182
 183         /**
 184          * Is the input a valid username?
 185          *
 186          * Checks if the input is a valid username, we don't want an empty string,
 187          * an IP address, anything that containins slashes (would mess up subpages),
 188          * is longer than the maximum allowed username size or doesn't begin with
 189          * a capital letter.
 190          *
 191          * @param string $name
 192          * @return bool
 193          * @static
 194          */
 195         function isValidUserName( $name ) {
 196                 global $wgContLang, $wgMaxNameChars;
 197
 198                 if ( $name == ''
 199                 || User::isIP( $name )
 200                 || strpos( $name, '/' ) !== false
 201                 || strlen( $name ) > $wgMaxNameChars
 202                 || $name != $wgContLang->ucfirst( $name ) )
 203                         return false;
 204
 205                 // Ensure that the name can't be misresolved as a different title,
 206                 // such as with extra namespace keys at the start.
 207                 $parsed = Title::newFromText( $name );
 208                 if( is_null( $parsed )
 209                         || $parsed->getNamespace()
 210                         || strcmp( $name, $parsed->getPrefixedText() ) )
 211                         return false;
 212                 else
 213                         return true;
 214         }
 215
 216         /**
 217          * Is the input a valid password?
 218          *
 219          * @param string $password
 220          * @return bool
 221          * @static
 222          */
 223         function isValidPassword( $password ) {
 224                 global $wgMinimalPasswordLength;
 225                 return strlen( $password ) >= $wgMinimalPasswordLength;
 226         }
 227
 228         /**
 229          * Does the string match roughly an email address ?
 230          *
 231          * There used to be a regular expression here, it got removed because it
 232          * rejected valid addresses. Actually just check if there is '@' somewhere
 233          * in the given address.
 234          *
 235          * @todo Check for RFC 2822 compilance
 236          * @bug 959
 237          *
 238          * @param string $addr email address
 239          * @static
 240          * @return bool
 241          */
 242         function isValidEmailAddr ( $addr ) {
 243                 return ( trim( $addr ) != '' ) &&
 244                         (false !== strpos( $addr, '@' ) );
 245         }
 246
 247         /**
 248          * Count the number of edits of a user
 249          *
 250          * @param int $uid The user ID to check
 251          * @return int
 252          */
 253         function edits( $uid ) {
 254                 $fname = 'User::edits';
 255
 256                 $dbr =& wfGetDB( DB_SLAVE );
 257                 return $dbr->selectField(
 258                         'revision', 'count(*)',
 259                         array( 'rev_user' => $uid ),
 260                         $fname
 261                 );
 262         }
 263
 264         /**
 265          * probably return a random password
 266          * @return string probably a random password
 267          * @static
 268          * @todo Check what is doing really [AV]
 269          */
 270         function randomPassword() {
 271                 $pwchars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz';
 272                 $l = strlen( $pwchars ) - 1;
 273
 274                 $np = $pwchars{mt_rand( 0, $l )} . $pwchars{mt_rand( 0, $l )} .
 275                   $pwchars{mt_rand( 0, $l )} . chr( mt_rand(48, 57) ) .
 276                   $pwchars{mt_rand( 0, $l )} . $pwchars{mt_rand( 0, $l )} .
 277                   $pwchars{mt_rand( 0, $l )};
 278                 return $np;
 279         }
 280
 281         /**
 282          * Set properties to default
 283          * Used at construction. It will load per language default settings only
 284          * if we have an available language object.
 285          */
 286         function loadDefaults() {
 287                 static $n=0;
 288                 $n++;
 289                 $fname = 'User::loadDefaults' . $n;
 290                 wfProfileIn( $fname );
 291
 292                 global $wgContLang, $wgDBname;
 293                 global $wgNamespacesToBeSearchedDefault;
 294
 295                 $this->mId = 0;
 296                 $this->mNewtalk = -1;
 297                 $this->mName = false;
 298                 $this->mRealName = $this->mEmail = '';
 299                 $this->mEmailAuthenticated = null;
 300                 $this->mPassword = $this->mNewpassword = '';
 301                 $this->mRights = array();
 302                 $this->mGroups = array();
 303                 $this->mOptions = User::getDefaultOptions();
 304
 305                 foreach( $wgNamespacesToBeSearchedDefault as $nsnum => $val ) {
 306                         $this->mOptions['searchNs'.$nsnum] = $val;
 307                 }
 308                 unset( $this->mSkin );
 309                 $this->mDataLoaded = false;
 310                 $this->mBlockedby = -1; # Unset
 311                 $this->setToken(); # Random
 312                 $this->mHash = false;
 313
 314                 if ( isset( $_COOKIE[$wgDBname.'LoggedOut'] ) ) {
 315                         $this->mTouched = wfTimestamp( TS_MW, $_COOKIE[$wgDBname.'LoggedOut'] );
 316                 }
 317                 else {
 318                         $this->mTouched = '0'; # Allow any pages to be cached
 319                 }
 320
 321                 wfProfileOut( $fname );
 322         }
 323
 324         /**
 325          * Combine the language default options with any site-specific options
 326          * and add the default language variants.
 327          *
 328          * @return array
 329          * @static
 330          * @access private
 331          */
 332         function getDefaultOptions() {
 333                 /**
 334                  * Site defaults will override the global/language defaults
 335                  */
 336                 global $wgContLang, $wgDefaultUserOptions;
 337                 $defOpt = $wgDefaultUserOptions + $wgContLang->getDefaultUserOptions();
 338
 339                 /**
 340                  * default language setting
 341                  */
 342                 $variant = $wgContLang->getPreferredVariant();
 343                 $defOpt['variant'] = $variant;
 344                 $defOpt['language'] = $variant;
 345
 346                 return $defOpt;
 347         }
 348
 349         /**
 350          * Get a given default option value.
 351          *
 352          * @param string $opt
 353          * @return string
 354          * @static
 355          * @access public
 356          */
 357         function getDefaultOption( $opt ) {
 358                 $defOpts = User::getDefaultOptions();
 359                 if( isset( $defOpts[$opt] ) ) {
 360                         return $defOpts[$opt];
 361                 } else {
 362                         return '';
 363                 }
 364         }
 365
 366         /**
 367          * Get blocking information
 368          * @access private
 369          * @param bool $bFromSlave Specify whether to check slave or master. To improve performance,
 370          *  non-critical checks are done against slaves. Check when actually saving should be done against
 371          *  master.
 372          *
 373          * Note that even if $bFromSlave is false, the check is done first against slave, then master.
 374          * The logic is that if blocked on slave, we'll assume it's either blocked on master or
 375          * just slightly outta sync and soon corrected - safer to block slightly more that less.
 376          * And it's cheaper to check slave first, then master if needed, than master always.
 377          */
 378         function getBlockedStatus( $bFromSlave = true ) {
 379                 global $wgBlockCache, $wgProxyList, $wgEnableSorbs, $wgProxyWhitelist;
 380
 381                 if ( -1 != $this->mBlockedby ) {
 382                         wfDebug( "User::getBlockedStatus: already loaded.\n" );
 383                         return;
 384                 }
 385
 386                 $fname = 'User::getBlockedStatus';
 387                 wfProfileIn( $fname );
 388                 wfDebug( "$fname: checking...\n" );
 389
 390                 $this->mBlockedby = 0;
 391                 $ip = wfGetIP();
 392
 393                 # User/IP blocking
 394                 $block = new Block();
 395                 $block->forUpdate( $bFromSlave );
 396                 if ( $block->load( $ip , $this->mId ) ) {
 397                         wfDebug( "$fname: Found block.\n" );
 398                         $this->mBlockedby = $block->mBy;
 399                         $this->mBlockreason = $block->mReason;
 400                         if ( $this->isLoggedIn() ) {
 401                                 $this->spreadBlock();
 402                         }
 403                 } else {
 404                         wfDebug( "$fname: No block.\n" );
 405                 }
 406
 407                 # Range blocking
 408                 if ( !$this->mBlockedby ) {
 409                         # Check first against slave, and optionally from master.
 410                         wfDebug( "$fname: Checking range blocks\n" );
 411                         $block = $wgBlockCache->get( $ip, true );
 412                         if ( !$block && !$bFromSlave )
 413                                 {
 414                                 # Not blocked: check against master, to make sure.
 415                                 $wgBlockCache->clearLocal( );
 416                                 $block = $wgBlockCache->get( $ip, false );
 417                                 }
 418                         if ( $block !== false ) {
 419                                 $this->mBlockedby = $block->mBy;
 420                                 $this->mBlockreason = $block->mReason;
 421                         }
 422                 }
 423
 424                 # Proxy blocking
 425                 if ( !$this->isSysop() && !in_array( $ip, $wgProxyWhitelist ) ) {
 426
 427                         # Local list
 428                         if ( array_key_exists( $ip, $wgProxyList ) ) {
 429                                 $this->mBlockedby = wfMsg( 'proxyblocker' );
 430                                 $this->mBlockreason = wfMsg( 'proxyblockreason' );
 431                         }
 432
 433                         # DNSBL
 434                         if ( !$this->mBlockedby && $wgEnableSorbs && !$this->getID() ) {
 435                                 if ( $this->inSorbsBlacklist( $ip ) ) {
 436                                         $this->mBlockedby = wfMsg( 'sorbs' );
 437                                         $this->mBlockreason = wfMsg( 'sorbsreason' );
 438                                 }
 439                         }
 440                 }
 441
 442                 # Extensions
 443                 wfRunHooks( 'GetBlockedStatus', array( &$this ) );
 444
 445                 wfProfileOut( $fname );
 446         }
 447
 448         function inSorbsBlacklist( $ip ) {
 449                 global $wgEnableSorbs;
 450                 return $wgEnableSorbs &&
 451                         $this->inDnsBlacklist( $ip, 'http.dnsbl.sorbs.net.' );
 452         }
 453
 454         function inOpmBlacklist( $ip ) {
 455                 global $wgEnableOpm;
 456                 return $wgEnableOpm &&
 457                         $this->inDnsBlacklist( $ip, 'opm.blitzed.org.' );
 458         }
 459
 460         function inDnsBlacklist( $ip, $base ) {
 461                 $fname = 'User::inDnsBlacklist';
 462                 wfProfileIn( $fname );
 463
 464                 $found = false;
 465                 $host = '';
 466
 467                 if ( preg_match( '/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/', $ip, $m ) ) {
 468                         # Make hostname
 469                         for ( $i=4; $i>=1; $i-- ) {
 470                                 $host .= $m[$i] . '.';
 471                         }
 472                         $host .= $base;
 473
 474                         # Send query
 475                         $ipList = gethostbynamel( $host );
 476
 477                         if ( $ipList ) {
 478                                 wfDebug( "Hostname $host is {$ipList[0]}, it's a proxy says $base!\n" );
 479                                 $found = true;
 480                         } else {
 481                                 wfDebug( "Requested $host, not found in $base.\n" );
 482                         }
 483                 }
 484
 485                 wfProfileOut( $fname );
 486                 return $found;
 487         }
 488
 489         /**
 490          * Primitive rate limits: enforce maximum actions per time period
 491          * to put a brake on flooding.
 492          *
 493          * Note: when using a shared cache like memcached, IP-address
 494          * last-hit counters will be shared across wikis.
 495          *
 496          * @return bool true if a rate limiter was tripped
 497          * @access public
 498          */
 499         function pingLimiter( $action='edit' ) {
 500                 global $wgRateLimits;
 501                 if( !isset( $wgRateLimits[$action] ) ) {
 502                         return false;
 503                 }
 504                 if( $this->isAllowed( 'delete' ) ) {
 505                         // goddam cabal
 506                         return false;
 507                 }
 508
 509                 global $wgMemc, $wgDBname, $wgRateLimitLog;
 510                 $fname = 'User::pingLimiter';
 511                 wfProfileIn( $fname );
 512
 513                 $limits = $wgRateLimits[$action];
 514                 $keys = array();
 515                 $id = $this->getId();
 516                 $ip = wfGetIP();
 517
 518                 if( isset( $limits['anon'] ) && $id == 0 ) {
 519                         $keys["$wgDBname:limiter:$action:anon"] = $limits['anon'];
 520                 }
 521
 522                 if( isset( $limits['user'] ) && $id != 0 ) {
 523                         $keys["$wgDBname:limiter:$action:user:$id"] = $limits['user'];
 524                 }
 525                 if( $this->isNewbie() ) {
 526                         if( isset( $limits['newbie'] ) && $id != 0 ) {
 527                                 $keys["$wgDBname:limiter:$action:user:$id"] = $limits['newbie'];
 528                         }
 529                         if( isset( $limits['ip'] ) ) {
 530                                 $keys["mediawiki:limiter:$action:ip:$ip"] = $limits['ip'];
 531                         }
 532                         if( isset( $limits['subnet'] ) && preg_match( '/^(\d+\.\d+\.\d+)\.\d+$/', $ip, $matches ) ) {
 533                                 $subnet = $matches[1];
 534                                 $keys["mediawiki:limiter:$action:subnet:$subnet"] = $limits['subnet'];
 535                         }
 536                 }
 537
 538                 $triggered = false;
 539                 foreach( $keys as $key => $limit ) {
 540                         list( $max, $period ) = $limit;
 541                         $summary = "(limit $max in {$period}s)";
 542                         $count = $wgMemc->get( $key );
 543                         if( $count ) {
 544                                 if( $count > $max ) {
 545                                         wfDebug( "$fname: tripped! $key at $count $summary\n" );
 546                                         if( $wgRateLimitLog ) {
 547                                                 @error_log( wfTimestamp( TS_MW ) . ' ' . $wgDBname . ': ' . $this->getName() . " tripped $key at $count $summary\n", 3, $wgRateLimitLog );
 548                                         }
 549                                         $triggered = true;
 550                                 } else {
 551                                         wfDebug( "$fname: ok. $key at $count $summary\n" );
 552                                 }
 553                         } else {
 554                                 wfDebug( "$fname: adding record for $key $summary\n" );
 555                                 $wgMemc->add( $key, 1, intval( $period ) );
 556                         }
 557                         $wgMemc->incr( $key );
 558                 }
 559
 560                 wfProfileOut( $fname );
 561                 return $triggered;
 562         }
 563
 564         /**
 565          * Check if user is blocked
 566          * @return bool True if blocked, false otherwise
 567          */
 568         function isBlocked( $bFromSlave = true ) { // hacked from false due to horrible probs on site
 569                 wfDebug( "User::isBlocked: enter\n" );
 570                 $this->getBlockedStatus( $bFromSlave );
 571                 return $this->mBlockedby !== 0;
 572         }
 573
 574         /**
 575          * Check if user is blocked from editing a particular article
 576          */
 577         function isBlockedFrom( $title, $bFromSlave = false ) {
 578                 global $wgBlockAllowsUTEdit;
 579                 $fname = 'User::isBlockedFrom';
 580                 wfProfileIn( $fname );
 581                 wfDebug( "$fname: enter\n" );
 582
 583                 if ( $wgBlockAllowsUTEdit && $title->getText() === $this->getName() &&
 584                   $title->getNamespace() == NS_USER_TALK )
 585                 {
 586                         $blocked = false;
 587                         wfDebug( "$fname: self-talk page, ignoring any blocks\n" );
 588                 } else {
 589                         wfDebug( "$fname: asking isBlocked()\n" );
 590                         $blocked = $this->isBlocked( $bFromSlave );
 591                 }
 592                 wfProfileOut( $fname );
 593                 return $blocked;
 594         }
 595
 596         /**
 597          * Get name of blocker
 598          * @return string name of blocker
 599          */
 600         function blockedBy() {
 601                 $this->getBlockedStatus();
 602                 return $this->mBlockedby;
 603         }
 604
 605         /**
 606          * Get blocking reason
 607          * @return string Blocking reason
 608          */
 609         function blockedFor() {
 610                 $this->getBlockedStatus();
 611                 return $this->mBlockreason;
 612         }
 613
 614         /**
 615          * Initialise php session
 616          */
 617         function SetupSession() {
 618                 global $wgSessionsInMemcached, $wgCookiePath, $wgCookieDomain;
 619                 if( $wgSessionsInMemcached ) {
 620                         require_once( 'MemcachedSessions.php' );
 621                 } elseif( 'files' != ini_get( 'session.save_handler' ) ) {
 622                         # If it's left on 'user' or another setting from another
 623                         # application, it will end up failing. Try to recover.
 624                         ini_set ( 'session.save_handler', 'files' );
 625                 }
 626                 session_set_cookie_params( 0, $wgCookiePath, $wgCookieDomain );
 627                 session_cache_limiter( 'private, must-revalidate' );
 628                 @session_start();
 629         }
 630
 631         /**
 632          * Create a new user object using data from session
 633          * @static
 634          */
 635         function loadFromSession() {
 636                 global $wgMemc, $wgDBname;
 637
 638                 if ( isset( $_SESSION['wsUserID'] ) ) {
 639                         if ( 0 != $_SESSION['wsUserID'] ) {
 640                                 $sId = $_SESSION['wsUserID'];
 641                         } else {
 642                                 return new User();
 643                         }
 644                 } else if ( isset( $_COOKIE["{$wgDBname}UserID"] ) ) {
 645                         $sId = intval( $_COOKIE["{$wgDBname}UserID"] );
 646                         $_SESSION['wsUserID'] = $sId;
 647                 } else {
 648                         return new User();
 649                 }
 650                 if ( isset( $_SESSION['wsUserName'] ) ) {
 651                         $sName = $_SESSION['wsUserName'];
 652                 } else if ( isset( $_COOKIE["{$wgDBname}UserName"] ) ) {
 653                         $sName = $_COOKIE["{$wgDBname}UserName"];
 654                         $_SESSION['wsUserName'] = $sName;
 655                 } else {
 656                         return new User();
 657                 }
 658
 659                 $passwordCorrect = FALSE;
 660                 $user = $wgMemc->get( $key = "$wgDBname:user:id:$sId" );
 661                 if( !is_object( $user ) || $user->mVersion < MW_USER_VERSION ) {
 662                         # Expire old serialized objects; they may be corrupt.
 663                         $user = false;
 664                 }
 665                 if($makenew = !$user) {
 666                         wfDebug( "User::loadFromSession() unable to load from memcached\n" );
 667                         $user = new User();
 668                         $user->mId = $sId;
 669                         $user->loadFromDatabase();
 670                 } else {
 671                         wfDebug( "User::loadFromSession() got from cache!\n" );
 672                 }
 673
 674                 if ( isset( $_SESSION['wsToken'] ) ) {
 675                         $passwordCorrect = $_SESSION['wsToken'] == $user->mToken;
 676                 } else if ( isset( $_COOKIE["{$wgDBname}Token"] ) ) {
 677                         $passwordCorrect = $user->mToken == $_COOKIE["{$wgDBname}Token"];
 678                 } else {
 679                         return new User(); # Can't log in from session
 680                 }
 681
 682                 if ( ( $sName == $user->mName ) && $passwordCorrect ) {
 683                         if($makenew) {
 684                                 if($wgMemc->set( $key, $user ))
 685                                         wfDebug( "User::loadFromSession() successfully saved user\n" );
 686                                 else
 687                                         wfDebug( "User::loadFromSession() unable to save to memcached\n" );
 688                         }
 689                         return $user;
 690                 }
 691                 return new User(); # Can't log in from session
 692         }
 693
 694         /**
 695          * Load a user from the database
 696          */
 697         function loadFromDatabase() {
 698                 global $wgCommandLineMode;
 699                 $fname = "User::loadFromDatabase";
 700
 701                 # Counter-intuitive, breaks various things, use User::setLoaded() if you want to suppress
 702                 # loading in a command line script, don't assume all command line scripts need it like this
 703                 #if ( $this->mDataLoaded || $wgCommandLineMode ) {
 704                 if ( $this->mDataLoaded ) {
 705                         return;
 706                 }
 707
 708                 # Paranoia
 709                 $this->mId = intval( $this->mId );
 710
 711                 /** Anonymous user */
 712                 if( !$this->mId ) {
 713                         /** Get rights */
 714                         $this->mRights = $this->getGroupPermissions( array( '*' ) );
 715                         $this->mDataLoaded = true;
 716                         return;
 717                 } # the following stuff is for non-anonymous users only
 718
 719                 $dbr =& wfGetDB( DB_SLAVE );
 720                 $s = $dbr->selectRow( 'user', array( 'user_name','user_password','user_newpassword','user_email',
 721                   'user_email_authenticated',
 722                   'user_real_name','user_options','user_touched', 'user_token' ),
 723                   array( 'user_id' => $this->mId ), $fname );
 724
 725                 if ( $s !== false ) {
 726                         $this->mName = $s->user_name;
 727                         $this->mEmail = $s->user_email;
 728                         $this->mEmailAuthenticated = wfTimestampOrNull( TS_MW, $s->user_email_authenticated );
 729                         $this->mRealName = $s->user_real_name;
 730                         $this->mPassword = $s->user_password;
 731                         $this->mNewpassword = $s->user_newpassword;
 732                         $this->decodeOptions( $s->user_options );
 733                         $this->mTouched = wfTimestamp(TS_MW,$s->user_touched);
 734                         $this->mToken = $s->user_token;
 735
 736                         $res = $dbr->select( 'user_groups',
 737                                 array( 'ug_group' ),
 738                                 array( 'ug_user' => $this->mId ),
 739                                 $fname );
 740                         $this->mGroups = array();
 741                         while( $row = $dbr->fetchObject( $res ) ) {
 742                                 $this->mGroups[] = $row->ug_group;
 743                         }
 744                         $effectiveGroups = array_merge( array( '*', 'user' ), $this->mGroups );
 745                         $this->mRights = $this->getGroupPermissions( $effectiveGroups );
 746                 }
 747
 748                 $this->mDataLoaded = true;
 749         }
 750
 751         function getID() { return $this->mId; }
 752         function setID( $v ) {
 753                 $this->mId = $v;
 754                 $this->mDataLoaded = false;
 755         }
 756
 757         function getName() {
 758                 $this->loadFromDatabase();
 759                 if ( $this->mName === false ) {
 760                         $this->mName = wfGetIP();
 761                 }
 762                 return $this->mName;
 763         }
 764
 765         function setName( $str ) {
 766                 $this->loadFromDatabase();
 767                 $this->mName = $str;
 768         }
 769
 770
 771         /**
 772          * Return the title dbkey form of the name, for eg user pages.
 773          * @return string
 774          * @access public
 775          */
 776         function getTitleKey() {
 777                 return str_replace( ' ', '_', $this->getName() );
 778         }
 779
 780         function getNewtalk() {
 781                 global $wgUseEnotif;
 782                 $fname = 'User::getNewtalk';
 783                 $this->loadFromDatabase();
 784
 785                 # Load the newtalk status if it is unloaded (mNewtalk=-1)
 786                 if( $this->mNewtalk == -1 ) {
 787                         $this->mNewtalk = 0; # reset talk page status
 788
 789                         # Check memcached separately for anons, who have no
 790                         # entire User object stored in there.
 791                         if( !$this->mId ) {
 792                                 global $wgDBname, $wgMemc;
 793                                 $key = "$wgDBname:newtalk:ip:" . $this->getName();
 794                                 $newtalk = $wgMemc->get( $key );
 795                                 if( is_integer( $newtalk ) ) {
 796                                         $this->mNewtalk = $newtalk ? 1 : 0;
 797                                         return (bool)$this->mNewtalk;
 798                                 }
 799                         }
 800
 801                         $dbr =& wfGetDB( DB_SLAVE );
 802                         if ( $wgUseEnotif ) {
 803                                 $res = $dbr->select( 'watchlist',
 804                                         array( 'wl_user' ),
 805                                         array( 'wl_title'     => $this->getTitleKey(),
 806                                                    'wl_namespace' => NS_USER_TALK,
 807                                                    'wl_user'      => $this->mId,
 808                                                    'wl_notificationtimestamp ' . $dbr->notNullTimestamp() ),
 809                                         'User::getNewtalk' );
 810                                 if( $dbr->numRows($res) > 0 ) {
 811                                         $this->mNewtalk = 1;
 812                                 }
 813                                 $dbr->freeResult( $res );
 814                         } elseif ( $this->mId ) {
 815                                 $res = $dbr->select( 'user_newtalk', 1, array( 'user_id' => $this->mId ), $fname );
 816
 817                                 if ( $dbr->numRows($res)>0 ) {
 818                                         $this->mNewtalk= 1;
 819                                 }
 820                                 $dbr->freeResult( $res );
 821                         } else {
 822                                 $res = $dbr->select( 'user_newtalk', 1, array( 'user_ip' => $this->getName() ), $fname );
 823                                 $this->mNewtalk = $dbr->numRows( $res ) > 0 ? 1 : 0;
 824                                 $dbr->freeResult( $res );
 825                         }
 826
 827                         if( !$this->mId ) {
 828                                 $wgMemc->set( $key, $this->mNewtalk, time() ); // + 1800 );
 829                         }
 830                 }
 831
 832                 return ( 0 != $this->mNewtalk );
 833         }
 834
 835         function setNewtalk( $val ) {
 836                 $this->loadFromDatabase();
 837                 $this->mNewtalk = $val;
 838                 $this->invalidateCache();
 839         }
 840
 841         function invalidateCache() {
 842                 global $wgClockSkewFudge;
 843                 $this->loadFromDatabase();
 844                 $this->mTouched = wfTimestamp(TS_MW, time() + $wgClockSkewFudge );
 845                 # Don't forget to save the options after this or
 846                 # it won't take effect!
 847         }
 848
 849         function validateCache( $timestamp ) {
 850                 $this->loadFromDatabase();
 851                 return ($timestamp >= $this->mTouched);
 852         }
 853
 854         /**
 855          * Encrypt a password.
 856          * It can eventuall salt a password @see User::addSalt()
 857          * @param string $p clear Password.
 858          * @return string Encrypted password.
 859          */
 860         function encryptPassword( $p ) {
 861                 return wfEncryptPassword( $this->mId, $p );
 862         }
 863
 864         # Set the password and reset the random token
 865         function setPassword( $str ) {
 866                 $this->loadFromDatabase();
 867                 $this->setToken();
 868                 $this->mPassword = $this->encryptPassword( $str );
 869                 $this->mNewpassword = '';
 870         }
 871
 872         # Set the random token (used for persistent authentication)
 873         function setToken( $token = false ) {
 874                 global $wgSecretKey, $wgProxyKey, $wgDBname;
 875                 if ( !$token ) {
 876                         if ( $wgSecretKey ) {
 877                                 $key = $wgSecretKey;
 878                         } elseif ( $wgProxyKey ) {
 879                                 $key = $wgProxyKey;
 880                         } else {
 881                                 $key = microtime();
 882                         }
 883                         $this->mToken = md5( $key . mt_rand( 0, 0x7fffffff ) . $wgDBname . $this->mId );
 884                 } else {
 885                         $this->mToken = $token;
 886                 }
 887         }
 888
 889
 890         function setCookiePassword( $str ) {
 891                 $this->loadFromDatabase();
 892                 $this->mCookiePassword = md5( $str );
 893         }
 894
 895         function setNewpassword( $str ) {
 896                 $this->loadFromDatabase();
 897                 $this->mNewpassword = $this->encryptPassword( $str );
 898         }
 899
 900         function getEmail() {
 901                 $this->loadFromDatabase();
 902                 return $this->mEmail;
 903         }
 904
 905         function getEmailAuthenticationTimestamp() {
 906                 $this->loadFromDatabase();
 907                 return $this->mEmailAuthenticated;
 908         }
 909
 910         function setEmail( $str ) {
 911                 $this->loadFromDatabase();
 912                 $this->mEmail = $str;
 913         }
 914
 915         function getRealName() {
 916                 $this->loadFromDatabase();
 917                 return $this->mRealName;
 918         }
 919
 920         function setRealName( $str ) {
 921                 $this->loadFromDatabase();
 922                 $this->mRealName = $str;
 923         }
 924
 925         function getOption( $oname ) {
 926                 $this->loadFromDatabase();
 927                 if ( array_key_exists( $oname, $this->mOptions ) ) {
 928                         return trim( $this->mOptions[$oname] );
 929                 } else {
 930                         return '';
 931                 }
 932         }
 933
 934         function setOption( $oname, $val ) {
 935                 $this->loadFromDatabase();
 936                 if ( $oname == 'skin' ) {
 937                         # Clear cached skin, so the new one displays immediately in Special:Preferences
 938                         unset( $this->mSkin );
 939                 }
 940                 $this->mOptions[$oname] = $val;
 941                 $this->invalidateCache();
 942         }
 943
 944         function getRights() {
 945                 $this->loadFromDatabase();
 946                 return $this->mRights;
 947         }
 948
 949         /**
 950          * Get the list of explicit group memberships this user has.
 951          * The implicit * and user groups are not included.
 952          * @return array of strings
 953          */
 954         function getGroups() {
 955                 $this->loadFromDatabase();
 956                 return $this->mGroups;
 957         }
 958
 959         /**
 960          * Get the list of implicit group memberships this user has.
 961          * This includes all explicit groups, plus 'user' if logged in
 962          * and '*' for all accounts.
 963          * @return array of strings
 964          */
 965         function getEffectiveGroups() {
 966                 $base = array( '*' );
 967                 if( $this->isLoggedIn() ) {
 968                         $base[] = 'user';
 969                 }
 970                 return array_merge( $base, $this->getGroups() );
 971         }
 972
 973         /**
 974          * Remove the user from the given group.
 975          * This takes immediate effect.
 976          * @string $group
 977          */
 978         function addGroup( $group ) {
 979                 $dbw =& wfGetDB( DB_MASTER );
 980                 $dbw->insert( 'user_groups',
 981                         array(
 982                                 'ug_user'  => $this->getID(),
 983                                 'ug_group' => $group,
 984                         ),
 985                         'User::addGroup',
 986                         array( 'IGNORE' ) );
 987
 988                 $this->mGroups = array_merge( $this->mGroups, array( $group ) );
 989                 $this->mRights = User::getGroupPermissions( $this->getEffectiveGroups() );
 990
 991                 $this->invalidateCache();
 992                 $this->saveSettings();
 993         }
 994
 995         /**
 996          * Remove the user from the given group.
 997          * This takes immediate effect.
 998          * @string $group
 999          */
1000         function removeGroup( $group ) {
1001                 $dbw =& wfGetDB( DB_MASTER );
1002                 $dbw->delete( 'user_groups',
1003                         array(
1004                                 'ug_user'  => $this->getID(),
1005                                 'ug_group' => $group,
1006                         ),
1007                         'User::removeGroup' );
1008
1009                 $this->mGroups = array_diff( $this->mGroups, array( $group ) );
1010                 $this->mRights = User::getGroupPermissions( $this->getEffectiveGroups() );
1011
1012                 $this->invalidateCache();
1013                 $this->saveSettings();
1014         }
1015
1016
1017         /**
1018          * A more legible check for non-anonymousness.
1019          * Returns true if the user is not an anonymous visitor.
1020          *
1021          * @return bool
1022          */
1023         function isLoggedIn() {
1024                 return( $this->getID() != 0 );
1025         }
1026
1027         /**
1028          * A more legible check for anonymousness.
1029          * Returns true if the user is an anonymous visitor.
1030          *
1031          * @return bool
1032          */
1033         function isAnon() {
1034                 return !$this->isLoggedIn();
1035         }
1036
1037         /**
1038          * Check if a user is sysop
1039          * @deprecated
1040          */
1041         function isSysop() {
1042                 return $this->isAllowed( 'protect' );
1043         }
1044
1045         /** @deprecated */
1046         function isDeveloper() {
1047                 return $this->isAllowed( 'siteadmin' );
1048         }
1049
1050         /** @deprecated */
1051         function isBureaucrat() {
1052                 return $this->isAllowed( 'makesysop' );
1053         }
1054
1055         /**
1056          * Whether the user is a bot
1057          * @todo need to be migrated to the new user level management sytem
1058          */
1059         function isBot() {
1060                 $this->loadFromDatabase();
1061                 return in_array( 'bot', $this->mRights );
1062         }
1063
1064         /**
1065          * Check if user is allowed to access a feature / make an action
1066          * @param string $action Action to be checked (see $wgAvailableRights in Defines.php for possible actions).
1067          * @return boolean True: action is allowed, False: action should not be allowed
1068          */
1069         function isAllowed($action='') {
1070                 $this->loadFromDatabase();
1071                 return in_array( $action , $this->mRights );
1072         }
1073
1074         /**
1075          * Load a skin if it doesn't exist or return it
1076          * @todo FIXME : need to check the old failback system [AV]
1077          */
1078         function &getSkin() {
1079                 global $IP, $wgRequest;
1080                 if ( ! isset( $this->mSkin ) ) {
1081                         $fname = 'User::getSkin';
1082                         wfProfileIn( $fname );
1083
1084                         # get all skin names available
1085                         $skinNames = Skin::getSkinNames();
1086
1087                         # get the user skin
1088                         $userSkin = $this->getOption( 'skin' );
1089                         $userSkin = $wgRequest->getText('useskin', $userSkin);
1090                         if ( $userSkin == '' ) { $userSkin = 'standard'; }
1091
1092                         if ( !isset( $skinNames[$userSkin] ) ) {
1093                                 # in case the user skin could not be found find a replacement
1094                                 $fallback = array(
1095                                         0 => 'Standard',
1096                                         1 => 'Nostalgia',
1097                                         2 => 'CologneBlue');
1098                                 # if phptal is enabled we should have monobook skin that
1099                                 # superseed the good old SkinStandard.
1100                                 if ( isset( $skinNames['monobook'] ) ) {
1101                                         $fallback[0] = 'MonoBook';
1102                                 }
1103
1104                                 if(is_numeric($userSkin) && isset( $fallback[$userSkin]) ){
1105                                         $sn = $fallback[$userSkin];
1106                                 } else {
1107                                         $sn = 'Standard';
1108                                 }
1109                         } else {
1110                                 # The user skin is available
1111                                 $sn = $skinNames[$userSkin];
1112                         }
1113
1114                         # Grab the skin class and initialise it. Each skin checks for PHPTal
1115                         # and will not load if it's not enabled.
1116                         require_once( $IP.'/skins/'.$sn.'.php' );
1117
1118                         # Check if we got if not failback to default skin
1119                         $className = 'Skin'.$sn;
1120                         if( !class_exists( $className ) ) {
1121                                 # DO NOT die if the class isn't found. This breaks maintenance
1122                                 # scripts and can cause a user account to be unrecoverable
1123                                 # except by SQL manipulation if a previously valid skin name
1124                                 # is no longer valid.
1125                                 $className = 'SkinStandard';
1126                                 require_once( $IP.'/skins/Standard.php' );
1127                         }
1128                         $this->mSkin =& new $className;
1129                         wfProfileOut( $fname );
1130                 }
1131                 return $this->mSkin;
1132         }
1133
1134         /**#@+
1135          * @param string $title Article title to look at
1136          */
1137
1138         /**
1139          * Check watched status of an article
1140          * @return bool True if article is watched
1141          */
1142         function isWatched( $title ) {
1143                 $wl = WatchedItem::fromUserTitle( $this, $title );
1144                 return $wl->isWatched();
1145         }
1146
1147         /**
1148          * Watch an article
1149          */
1150         function addWatch( $title ) {
1151                 $wl = WatchedItem::fromUserTitle( $this, $title );
1152                 $wl->addWatch();
1153                 $this->invalidateCache();
1154         }
1155
1156         /**
1157          * Stop watching an article
1158          */
1159         function removeWatch( $title ) {
1160                 $wl = WatchedItem::fromUserTitle( $this, $title );
1161                 $wl->removeWatch();
1162                 $this->invalidateCache();
1163         }
1164
1165         /**
1166          * Clear the user's notification timestamp for the given title.
1167          * If e-notif e-mails are on, they will receive notification mails on
1168          * the next change of the page if it's watched etc.
1169          */
1170         function clearNotification( &$title ) {
1171                 global $wgUser, $wgUseEnotif;
1172
1173                 if ( !$wgUseEnotif ) {
1174                         return;
1175                 }
1176
1177                 $userid = $this->getID();
1178                 if ($userid==0) {
1179                         return;
1180                 }
1181
1182                 // Only update the timestamp if the page is being watched.
1183                 // The query to find out if it is watched is cached both in memcached and per-invocation,
1184                 // and when it does have to be executed, it can be on a slave
1185                 // If this is the user's newtalk page, we always update the timestamp
1186                 if ($title->getNamespace() == NS_USER_TALK &&
1187                         $title->getText() == $wgUser->getName())
1188                 {
1189                         $watched = true;
1190                 } elseif ( $this->getID() == $wgUser->getID() ) {
1191                         $watched = $title->userIsWatching();
1192                 } else {
1193                         $watched = true;
1194                 }
1195
1196                 // If the page is watched by the user (or may be watched), update the timestamp on any
1197                 // any matching rows
1198                 if ( $watched ) {
1199                         $dbw =& wfGetDB( DB_MASTER );
1200                         $success = $dbw->update( 'watchlist',
1201                                         array( /* SET */
1202                                                 'wl_notificationtimestamp' => NULL
1203                                         ), array( /* WHERE */
1204                                                 'wl_title' => $title->getDBkey(),
1205                                                 'wl_namespace' => $title->getNamespace(),
1206                                                 'wl_user' => $this->getID()
1207                                         ), 'User::clearLastVisited'
1208                         );
1209                 }
1210         }
1211
1212         /**#@-*/
1213
1214         /**
1215          * Resets all of the given user's page-change notification timestamps.
1216          * If e-notif e-mails are on, they will receive notification mails on
1217          * the next change of any watched page.
1218          *
1219          * @param int $currentUser user ID number
1220          * @access public
1221          */
1222         function clearAllNotifications( $currentUser ) {
1223                 global $wgUseEnotif;
1224                 if ( !$wgUseEnotif ) {
1225                         return;
1226                 }
1227                 if( $currentUser != 0 )  {
1228
1229                         $dbw =& wfGetDB( DB_MASTER );
1230                         $success = $dbw->update( 'watchlist',
1231                                 array( /* SET */
1232                                         'wl_notificationtimestamp' => 0
1233                                 ), array( /* WHERE */
1234                                         'wl_user' => $currentUser
1235                                 ), 'UserMailer::clearAll'
1236                         );
1237
1238                 #       we also need to clear here the "you have new message" notification for the own user_talk page
1239                 #       This is cleared one page view later in Article::viewUpdates();
1240                 }
1241         }
1242
1243         /**
1244          * @access private
1245          * @return string Encoding options
1246          */
1247         function encodeOptions() {
1248                 $a = array();
1249                 foreach ( $this->mOptions as $oname => $oval ) {
1250                         array_push( $a, $oname.'='.$oval );
1251                 }
1252                 $s = implode( "\n", $a );
1253                 return $s;
1254         }
1255
1256         /**
1257          * @access private
1258          */
1259         function decodeOptions( $str ) {
1260                 $a = explode( "\n", $str );
1261                 foreach ( $a as $s ) {
1262                         if ( preg_match( "/^(.[^=]*)=(.*)$/", $s, $m ) ) {
1263                                 $this->mOptions[$m[1]] = $m[2];
1264                         }
1265                 }
1266         }
1267
1268         function setCookies() {
1269                 global $wgCookieExpiration, $wgCookiePath, $wgCookieDomain, $wgDBname;
1270                 if ( 0 == $this->mId ) return;
1271                 $this->loadFromDatabase();
1272                 $exp = time() + $wgCookieExpiration;
1273
1274                 $_SESSION['wsUserID'] = $this->mId;
1275                 setcookie( $wgDBname.'UserID', $this->mId, $exp, $wgCookiePath, $wgCookieDomain );
1276
1277                 $_SESSION['wsUserName'] = $this->getName();
1278                 setcookie( $wgDBname.'UserName', $this->getName(), $exp, $wgCookiePath, $wgCookieDomain );
1279
1280                 $_SESSION['wsToken'] = $this->mToken;
1281                 if ( 1 == $this->getOption( 'rememberpassword' ) ) {
1282                         setcookie( $wgDBname.'Token', $this->mToken, $exp, $wgCookiePath, $wgCookieDomain );
1283                 } else {
1284                         setcookie( $wgDBname.'Token', '', time() - 3600 );
1285                 }
1286         }
1287
1288         /**
1289          * Logout user
1290          * It will clean the session cookie
1291          */
1292         function logout() {
1293                 global $wgCookiePath, $wgCookieDomain, $wgDBname;
1294                 $this->loadDefaults();
1295                 $this->setLoaded( true );
1296
1297                 $_SESSION['wsUserID'] = 0;
1298
1299                 setcookie( $wgDBname.'UserID', '', time() - 3600, $wgCookiePath, $wgCookieDomain );
1300                 setcookie( $wgDBname.'Token', '', time() - 3600, $wgCookiePath, $wgCookieDomain );
1301
1302                 # Remember when user logged out, to prevent seeing cached pages
1303                 setcookie( $wgDBname.'LoggedOut', wfTimestampNow(), time() + 86400, $wgCookiePath, $wgCookieDomain );
1304         }
1305
1306         /**
1307          * Save object settings into database
1308          */
1309         function saveSettings() {
1310                 global $wgMemc, $wgDBname, $wgUseEnotif;
1311                 $fname = 'User::saveSettings';
1312
1313                 if ( wfReadOnly() ) { return; }
1314                 $this->saveNewtalk();
1315                 if ( 0 == $this->mId ) { return; }
1316
1317                 $dbw =& wfGetDB( DB_MASTER );
1318                 $dbw->update( 'user',
1319                         array( /* SET */
1320                                 'user_name' => $this->mName,
1321                                 'user_password' => $this->mPassword,
1322                                 'user_newpassword' => $this->mNewpassword,
1323                                 'user_real_name' => $this->mRealName,
1324                                 'user_email' => $this->mEmail,
1325                                 'user_email_authenticated' => $dbw->timestampOrNull( $this->mEmailAuthenticated ),
1326                                 'user_options' => $this->encodeOptions(),
1327                                 'user_touched' => $dbw->timestamp($this->mTouched),
1328                                 'user_token' => $this->mToken
1329                         ), array( /* WHERE */
1330                                 'user_id' => $this->mId
1331                         ), $fname
1332                 );
1333                 $wgMemc->delete( "$wgDBname:user:id:$this->mId" );
1334         }
1335
1336         /**
1337          * Save value of new talk flag.
1338          */
1339         function saveNewtalk() {
1340                 global $wgDBname, $wgMemc, $wgUseEnotif;
1341
1342                 $fname = 'User::saveNewtalk';
1343
1344                 $changed = false;
1345
1346                 if ( wfReadOnly() ) { return ; }
1347                 $dbr =& wfGetDB( DB_SLAVE );
1348                 $dbw =& wfGetDB( DB_MASTER );
1349                 $changed = false;
1350                 if ( $wgUseEnotif ) {
1351                         if ( ! $this->getNewtalk() ) {
1352                                 # Delete the watchlist entry for user_talk page X watched by user X
1353                                 $dbw->delete( 'watchlist',
1354                                         array( 'wl_user'      => $this->mId,
1355                                                    'wl_title'     => $this->getTitleKey(),
1356                                                    'wl_namespace' => NS_USER_TALK ),
1357                                         $fname );
1358                                 if ( $dbw->affectedRows() ) {
1359                                         $changed = true;
1360                                 }
1361                                 if( !$this->mId ) {
1362                                         # Anon users have a separate memcache space for newtalk
1363                                         # since they don't store their own info. Trim...
1364                                         $wgMemc->delete( "$wgDBname:newtalk:ip:" . $this->getName() );
1365                                 }
1366                         }
1367                 } else {
1368                         if ($this->getID() != 0) {
1369                                 $field = 'user_id';
1370                                 $value = $this->getID();
1371                                 $key = false;
1372                         } else {
1373                                 $field = 'user_ip';
1374                                 $value = $this->getName();
1375                                 $key = "$wgDBname:newtalk:ip:$value";
1376                         }
1377
1378                         $dbr =& wfGetDB( DB_SLAVE );
1379                         $dbw =& wfGetDB( DB_MASTER );
1380
1381                         $res = $dbr->selectField('user_newtalk', $field,
1382                                                                          array($field => $value), $fname);
1383
1384                         $changed = true;
1385                         if ($res !== false && $this->mNewtalk == 0) {
1386                                 $dbw->delete('user_newtalk', array($field => $value), $fname);
1387                                 if ( $key ) {
1388                                         $wgMemc->set( $key, 0 );
1389                                 }
1390                         } else if ($res === false && $this->mNewtalk == 1) {
1391                                 $dbw->insert('user_newtalk', array($field => $value), $fname);
1392                                 if ( $key ) {
1393                                         $wgMemc->set( $key, 1 );
1394                                 }
1395                         } else {
1396                                 $changed = false;
1397                         }
1398                 }
1399
1400                 # Update user_touched, so that newtalk notifications in the client cache are invalidated
1401                 if ( $changed && $this->getID() ) {
1402                         $dbw->update('user',
1403                                 /*SET*/ array( 'user_touched' => $this->mTouched ),
1404                                 /*WHERE*/ array( 'user_id' => $this->getID() ),
1405                                 $fname);
1406                         $wgMemc->set( "$wgDBname:user:id:{$this->mId}", $this, 86400 );
1407                 }
1408         }
1409
1410         /**
1411          * Checks if a user with the given name exists, returns the ID
1412          */
1413         function idForName() {
1414                 $fname = 'User::idForName';
1415
1416                 $gotid = 0;
1417                 $s = trim( $this->getName() );
1418                 if ( 0 == strcmp( '', $s ) ) return 0;
1419
1420                 $dbr =& wfGetDB( DB_SLAVE );
1421                 $id = $dbr->selectField( 'user', 'user_id', array( 'user_name' => $s ), $fname );
1422                 if ( $id === false ) {
1423                         $id = 0;
1424                 }
1425                 return $id;
1426         }
1427
1428         /**
1429          * Add user object to the database
1430          */
1431         function addToDatabase() {
1432                 $fname = 'User::addToDatabase';
1433                 $dbw =& wfGetDB( DB_MASTER );
1434                 $seqVal = $dbw->nextSequenceValue( 'user_user_id_seq' );
1435                 $dbw->insert( 'user',
1436                         array(
1437                                 'user_id' => $seqVal,
1438                                 'user_name' => $this->mName,
1439                                 'user_password' => $this->mPassword,
1440                                 'user_newpassword' => $this->mNewpassword,
1441                                 'user_email' => $this->mEmail,
1442                                 'user_email_authenticated' => $dbw->timestampOrNull( $this->mEmailAuthenticated ),
1443                                 'user_real_name' => $this->mRealName,
1444                                 'user_options' => $this->encodeOptions(),
1445                                 'user_token' => $this->mToken
1446                         ), $fname
1447                 );
1448                 $this->mId = $dbw->insertId();
1449         }
1450
1451         function spreadBlock() {
1452                 # If the (non-anonymous) user is blocked, this function will block any IP address
1453                 # that they successfully log on from.
1454                 $fname = 'User::spreadBlock';
1455
1456                 wfDebug( "User:spreadBlock()\n" );
1457                 if ( $this->mId == 0 ) {
1458                         return;
1459                 }
1460
1461                 $userblock = Block::newFromDB( '', $this->mId );
1462                 if ( !$userblock->isValid() ) {
1463                         return;
1464                 }
1465
1466                 # Check if this IP address is already blocked
1467                 $ipblock = Block::newFromDB( wfGetIP() );
1468                 if ( $ipblock->isValid() ) {
1469                         # If the user is already blocked. Then check if the autoblock would
1470                         # excede the user block. If it would excede, then do nothing, else
1471                         # prolong block time
1472                         if ($userblock->mExpiry &&
1473                                 ($userblock->mExpiry < Block::getAutoblockExpiry($ipblock->mTimestamp))) {
1474                                 return;
1475                         }
1476                         # Just update the timestamp
1477                         $ipblock->updateTimestamp();
1478                         return;
1479                 }
1480
1481                 # Make a new block object with the desired properties
1482                 wfDebug( "Autoblocking {$this->mName}@" . wfGetIP() . "\n" );
1483                 $ipblock->mAddress = wfGetIP();
1484                 $ipblock->mUser = 0;
1485                 $ipblock->mBy = $userblock->mBy;
1486                 $ipblock->mReason = wfMsg( 'autoblocker', $this->getName(), $userblock->mReason );
1487                 $ipblock->mTimestamp = wfTimestampNow();
1488                 $ipblock->mAuto = 1;
1489                 # If the user is already blocked with an expiry date, we don't
1490                 # want to pile on top of that!
1491                 if($userblock->mExpiry) {
1492                         $ipblock->mExpiry = min ( $userblock->mExpiry, Block::getAutoblockExpiry( $ipblock->mTimestamp ));
1493                 } else {
1494                         $ipblock->mExpiry = Block::getAutoblockExpiry( $ipblock->mTimestamp );
1495                 }
1496
1497                 # Insert it
1498                 $ipblock->insert();
1499
1500         }
1501
1502         function getPageRenderingHash() {
1503                 global $wgContLang;
1504                 if( $this->mHash ){
1505                         return $this->mHash;
1506                 }
1507
1508                 // stubthreshold is only included below for completeness,
1509                 // it will always be 0 when this function is called by parsercache.
1510
1511                 $confstr =        $this->getOption( 'math' );
1512                 $confstr .= '!' . $this->getOption( 'stubthreshold' );
1513                 $confstr .= '!' . $this->getOption( 'date' );
1514                 $confstr .= '!' . $this->getOption( 'numberheadings' );
1515                 $confstr .= '!' . $this->getOption( 'language' );
1516                 $confstr .= '!' . $this->getOption( 'thumbsize' );
1517                 // add in language specific options, if any
1518                 $extra = $wgContLang->getExtraHashOptions();
1519                 $confstr .= $extra;
1520
1521                 $this->mHash = $confstr;
1522                 return $confstr ;
1523         }
1524
1525         function isAllowedToCreateAccount() {
1526                 return $this->isAllowed( 'createaccount' ) && !$this->isBlocked();
1527         }
1528
1529         /**
1530          * Set mDataLoaded, return previous value
1531          * Use this to prevent DB access in command-line scripts or similar situations
1532          */
1533         function setLoaded( $loaded ) {
1534                 return wfSetVar( $this->mDataLoaded, $loaded );
1535         }
1536
1537         /**
1538          * Get this user's personal page title.
1539          *
1540          * @return Title
1541          * @access public
1542          */
1543         function getUserPage() {
1544                 return Title::makeTitle( NS_USER, $this->getName() );
1545         }
1546
1547         /**
1548          * Get this user's talk page title.
1549          *
1550          * @return Title
1551          * @access public
1552          */
1553         function getTalkPage() {
1554                 $title = $this->getUserPage();
1555                 return $title->getTalkPage();
1556         }
1557
1558         /**
1559          * @static
1560          */
1561         function getMaxID() {
1562                 $dbr =& wfGetDB( DB_SLAVE );
1563                 return $dbr->selectField( 'user', 'max(user_id)', false, 'User::getMaxID' );
1564         }
1565
1566         /**
1567          * Determine whether the user is a newbie. Newbies are either
1568          * anonymous IPs, or the 1% most recently created accounts.
1569          * Bots and sysops are excluded.
1570          * @return bool True if it is a newbie.
1571          */
1572         function isNewbie() {
1573                 return $this->isAnon() || $this->mId > User::getMaxID() * 0.99 && !$this->isAllowed( 'delete' ) && !$this->isBot();
1574         }
1575
1576         /**
1577          * Check to see if the given clear-text password is one of the accepted passwords
1578          * @param string $password User password.
1579          * @return bool True if the given password is correct otherwise False.
1580          */
1581         function checkPassword( $password ) {
1582                 global $wgAuth, $wgMinimalPasswordLength;
1583                 $this->loadFromDatabase();
1584
1585                 // Even though we stop people from creating passwords that
1586                 // are shorter than this, doesn't mean people wont be able
1587                 // to. Certain authentication plugins do NOT want to save
1588                 // domain passwords in a mysql database, so we should
1589                 // check this (incase $wgAuth->strict() is false).
1590                 if( strlen( $password ) < $wgMinimalPasswordLength ) {
1591                         return false;
1592                 }
1593
1594                 if( $wgAuth->authenticate( $this->getName(), $password ) ) {
1595                         return true;
1596                 } elseif( $wgAuth->strict() ) {
1597                         /* Auth plugin doesn't allow local authentication */
1598                         return false;
1599                 }
1600                 $ep = $this->encryptPassword( $password );
1601                 if ( 0 == strcmp( $ep, $this->mPassword ) ) {
1602                         return true;
1603                 } elseif ( ($this->mNewpassword != '') && (0 == strcmp( $ep, $this->mNewpassword )) ) {
1604                         return true;
1605                 } elseif ( function_exists( 'iconv' ) ) {
1606                         # Some wikis were converted from ISO 8859-1 to UTF-8, the passwords can't be converted
1607                         # Check for this with iconv
1608                         $cp1252hash = $this->encryptPassword( iconv( 'UTF-8', 'WINDOWS-1252', $password ) );
1609                         if ( 0 == strcmp( $cp1252hash, $this->mPassword ) ) {
1610                                 return true;
1611                         }
1612                 }
1613                 return false;
1614         }
1615
1616         /**
1617          * Initialize (if necessary) and return a session token value
1618          * which can be used in edit forms to show that the user's
1619          * login credentials aren't being hijacked with a foreign form
1620          * submission.
1621          *
1622          * @param mixed $salt - Optional function-specific data for hash.
1623          *                      Use a string or an array of strings.
1624          * @return string
1625          * @access public
1626          */
1627         function editToken( $salt = '' ) {
1628                 if( !isset( $_SESSION['wsEditToken'] ) ) {
1629                         $token = $this->generateToken();
1630                         $_SESSION['wsEditToken'] = $token;
1631                 } else {
1632                         $token = $_SESSION['wsEditToken'];
1633                 }
1634                 if( is_array( $salt ) ) {
1635                         $salt = implode( '|', $salt );
1636                 }
1637                 return md5( $token . $salt );
1638         }
1639
1640         /**
1641          * Generate a hex-y looking random token for various uses.
1642          * Could be made more cryptographically sure if someone cares.
1643          * @return string
1644          */
1645         function generateToken( $salt = '' ) {
1646                 $token = dechex( mt_rand() ) . dechex( mt_rand() );
1647                 return md5( $token . $salt );
1648         }
1649
1650         /**
1651          * Check given value against the token value stored in the session.
1652          * A match should confirm that the form was submitted from the
1653          * user's own login session, not a form submission from a third-party
1654          * site.
1655          *
1656          * @param string $val - the input value to compare
1657          * @param string $salt - Optional function-specific data for hash
1658          * @return bool
1659          * @access public
1660          */
1661         function matchEditToken( $val, $salt = '' ) {
1662                 global $wgMemc;
1663
1664 /*
1665                 if ( !isset( $_SESSION['wsEditToken'] ) ) {
1666                         $logfile = '/home/wikipedia/logs/session_debug/session.log';
1667                         $mckey = memsess_key( session_id() );
1668                         $uname = @posix_uname();
1669                         $msg = "wsEditToken not set!\n" .
1670                         'apache server=' . $uname['nodename'] . "\n" .
1671                         'session_id = ' . session_id() . "\n" .
1672                         '$_SESSION=' . var_export( $_SESSION, true ) . "\n" .
1673                         '$_COOKIE=' . var_export( $_COOKIE, true ) . "\n" .
1674                         "mc get($mckey) = " . var_export( $wgMemc->get( $mckey ), true ) . "\n\n\n";
1675
1676                         @error_log( $msg, 3, $logfile );
1677                 }
1678 */
1679                 return ( $val == $this->editToken( $salt ) );
1680         }
1681
1682         /**
1683          * Generate a new e-mail confirmation token and send a confirmation
1684          * mail to the user's given address.
1685          *
1686          * @return mixed True on success, a WikiError object on failure.
1687          */
1688         function sendConfirmationMail() {
1689                 global $wgContLang;
1690                 $url = $this->confirmationTokenUrl( $expiration );
1691                 return $this->sendMail( wfMsg( 'confirmemail_subject' ),
1692                         wfMsg( 'confirmemail_body',
1693                                 wfGetIP(),
1694                                 $this->getName(),
1695                                 $url,
1696                                 $wgContLang->timeanddate( $expiration, false ) ) );
1697         }
1698
1699         /**
1700          * Send an e-mail to this user's account. Does not check for
1701          * confirmed status or validity.
1702          *
1703          * @param string $subject
1704          * @param string $body
1705          * @param strong $from Optional from address; default $wgPasswordSender will be used otherwise.
1706          * @return mixed True on success, a WikiError object on failure.
1707          */
1708         function sendMail( $subject, $body, $from = null ) {
1709                 if( is_null( $from ) ) {
1710                         global $wgPasswordSender;
1711                         $from = $wgPasswordSender;
1712                 }
1713
1714                 require_once( 'UserMailer.php' );
1715                 $error = userMailer( $this->getEmail(), $from, $subject, $body );
1716
1717                 if( $error == '' ) {
1718                         return true;
1719                 } else {
1720                         return new WikiError( $error );
1721                 }
1722         }
1723
1724         /**
1725          * Generate, store, and return a new e-mail confirmation code.
1726          * A hash (unsalted since it's used as a key) is stored.
1727          * @param &$expiration mixed output: accepts the expiration time
1728          * @return string
1729          * @access private
1730          */
1731         function confirmationToken( &$expiration ) {
1732                 $fname = 'User::confirmationToken';
1733
1734                 $now = time();
1735                 $expires = $now + 7 * 24 * 60 * 60;
1736                 $expiration = wfTimestamp( TS_MW, $expires );
1737
1738                 $token = $this->generateToken( $this->mId . $this->mEmail . $expires );
1739                 $hash = md5( $token );
1740
1741                 $dbw =& wfGetDB( DB_MASTER );
1742                 $dbw->update( 'user',
1743                         array( 'user_email_token'         => $hash,
1744                                'user_email_token_expires' => $dbw->timestamp( $expires ) ),
1745                         array( 'user_id'                  => $this->mId ),
1746                         $fname );
1747
1748                 return $token;
1749         }
1750
1751         /**
1752          * Generate and store a new e-mail confirmation token, and return
1753          * the URL the user can use to confirm.
1754          * @param &$expiration mixed output: accepts the expiration time
1755          * @return string
1756          * @access private
1757          */
1758         function confirmationTokenUrl( &$expiration ) {
1759                 $token = $this->confirmationToken( $expiration );
1760                 $title = Title::makeTitle( NS_SPECIAL, 'Confirmemail/' . $token );
1761                 return $title->getFullUrl();
1762         }
1763
1764         /**
1765          * Mark the e-mail address confirmed and save.
1766          */
1767         function confirmEmail() {
1768                 $this->loadFromDatabase();
1769                 $this->mEmailAuthenticated = wfTimestampNow();
1770                 $this->saveSettings();
1771                 return true;
1772         }
1773
1774         /**
1775          * Is this user allowed to send e-mails within limits of current
1776          * site configuration?
1777          * @return bool
1778          */
1779         function canSendEmail() {
1780                 return $this->isEmailConfirmed();
1781         }
1782
1783         /**
1784          * Is this user allowed to receive e-mails within limits of current
1785          * site configuration?
1786          * @return bool
1787          */
1788         function canReceiveEmail() {
1789                 return $this->canSendEmail() && !$this->getOption( 'disablemail' );
1790         }
1791
1792         /**
1793          * Is this user's e-mail address valid-looking and confirmed within
1794          * limits of the current site configuration?
1795          *
1796          * If $wgEmailAuthentication is on, this may require the user to have
1797          * confirmed their address by returning a code or using a password
1798          * sent to the address from the wiki.
1799          *
1800          * @return bool
1801          */
1802         function isEmailConfirmed() {
1803                 global $wgEmailAuthentication;
1804                 $this->loadFromDatabase();
1805                 if( $this->isAnon() )
1806                         return false;
1807                 if( !$this->isValidEmailAddr( $this->mEmail ) )
1808                         return false;
1809                 if( $wgEmailAuthentication && !$this->getEmailAuthenticationTimestamp() )
1810                         return false;
1811                 return true;
1812         }
1813
1814         /**
1815          * @param array $groups list of groups
1816          * @return array list of permission key names for given groups combined
1817          * @static
1818          */
1819         function getGroupPermissions( $groups ) {
1820                 global $wgGroupPermissions;
1821                 $rights = array();
1822                 foreach( $groups as $group ) {
1823                         if( isset( $wgGroupPermissions[$group] ) ) {
1824                                 $rights = array_merge( $rights,
1825                                         array_keys( array_filter( $wgGroupPermissions[$group] ) ) );
1826                         }
1827                 }
1828                 return $rights;
1829         }
1830
1831         /**
1832          * @param string $group key name
1833          * @return string localized descriptive name, if provided
1834          * @static
1835          */
1836         function getGroupName( $group ) {
1837                 $key = "group-$group-name";
1838                 $name = wfMsg( $key );
1839                 if( $name == '' || $name == "&lt;$key&gt;" ) {
1840                         return $group;
1841                 } else {
1842                         return $name;
1843                 }
1844         }
1845
1846         /**
1847          * Return the set of defined explicit groups.
1848          * The * and 'user' groups are not included.
1849          * @return array
1850          * @static
1851          */
1852         function getAllGroups() {
1853                 global $wgGroupPermissions;
1854                 return array_diff(
1855                         array_keys( $wgGroupPermissions ),
1856                         array( '*', 'user' ) );
1857         }
1858
1859 }
1860
1861 ?>