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