includes/User.php

   1 <?php
   2 /**
   3  * See user.txt
   4  *
   5  * @package MediaWiki
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'WatchedItem.php' );
  12
  13 # Number of characters in user_token field
  14 define( 'USER_TOKEN_LENGTH', 32 );
  15
  16 # Serialized record version
  17 define( 'MW_USER_VERSION', 3 );
  18
  19 /**
  20  *
  21  * @package MediaWiki
  22  */
  23 class User {
  24         /**#@+
  25          * @access private
  26          */
  27         var $mId, $mName, $mPassword, $mEmail, $mNewtalk;
  28         var $mEmailAuthenticated;
  29         var $mRights, $mOptions;
  30         var $mDataLoaded, $mNewpassword;
  31         var $mSkin;
  32         var $mBlockedby, $mBlockreason;
  33         var $mTouched;
  34         var $mToken;
  35         var $mRealName;
  36         var $mHash;
  37         var $mGroups;
  38         var $mVersion; // serialized version
  39         var $mRegistration;
  40
  41         /** Construct using User:loadDefaults() */
  42         function User() {
  43                 $this->loadDefaults();
  44                 $this->mVersion = MW_USER_VERSION;
  45         }
  46
  47         /**
  48          * Static factory method
  49          * @param string $name Username, validated by Title:newFromText()
  50          * @return User
  51          * @static
  52          */
  53         function newFromName( $name ) {
  54                 # Force usernames to capital
  55                 global $wgContLang;
  56                 $name = $wgContLang->ucfirst( $name );
  57
  58                 # Clean up name according to title rules
  59                 $t = Title::newFromText( $name );
  60                 if( is_null( $t ) ) {
  61                         return null;
  62                 }
  63
  64                 # Reject various classes of invalid names
  65                 $canonicalName = $t->getText();
  66                 global $wgAuth;
  67                 $canonicalName = $wgAuth->getCanonicalName( $t->getText() );
  68
  69                 if( !User::isValidUserName( $canonicalName ) ) {
  70                         return null;
  71                 }
  72
  73                 $u = new User();
  74                 $u->setName( $canonicalName );
  75                 $u->setId( $u->idFromName( $canonicalName ) );
  76                 return $u;
  77         }
  78
  79         /**
  80          * Factory method to fetch whichever use has a given email confirmation code.
  81          * This code is generated when an account is created or its e-mail address
  82          * has changed.
  83          *
  84          * If the code is invalid or has expired, returns NULL.
  85          *
  86          * @param string $code
  87          * @return User
  88          * @static
  89          */
  90         function newFromConfirmationCode( $code ) {
  91                 $dbr =& wfGetDB( DB_SLAVE );
  92                 $name = $dbr->selectField( 'user', 'user_name', array(
  93                         'user_email_token' => md5( $code ),
  94                         'user_email_token_expires > ' . $dbr->addQuotes( $dbr->timestamp() ),
  95                         ) );
  96                 if( is_string( $name ) ) {
  97                         return User::newFromName( $name );
  98                 } else {
  99                         return null;
 100                 }
 101         }
 102
 103         /**
 104          * Serialze sleep function, for better cache efficiency and avoidance of
 105          * silly "incomplete type" errors when skins are cached
 106          */
 107         function __sleep() {
 108                 return array( 'mId', 'mName', 'mPassword', 'mEmail', 'mNewtalk',
 109                         'mEmailAuthenticated', 'mRights', 'mOptions', 'mDataLoaded',
 110                         'mNewpassword', 'mBlockedby', 'mBlockreason', 'mTouched',
 111                         'mToken', 'mRealName', 'mHash', 'mGroups', 'mRegistration' );
 112         }
 113
 114         /**
 115          * Get username given an id.
 116          * @param integer $id Database user id
 117          * @return string Nickname of a user
 118          * @static
 119          */
 120         function whoIs( $id )   {
 121                 $dbr =& wfGetDB( DB_SLAVE );
 122                 return $dbr->selectField( 'user', 'user_name', array( 'user_id' => $id ), 'User::whoIs' );
 123         }
 124
 125         /**
 126          * Get real username given an id.
 127          * @param integer $id Database user id
 128          * @return string Realname of a user
 129          * @static
 130          */
 131         function whoIsReal( $id )       {
 132                 $dbr =& wfGetDB( DB_SLAVE );
 133                 return $dbr->selectField( 'user', 'user_real_name', array( 'user_id' => $id ), 'User::whoIsReal' );
 134         }
 135
 136         /**
 137          * Get database id given a user name
 138          * @param string $name Nickname of a user
 139          * @return integer|null Database user id (null: if non existent
 140          * @static
 141          */
 142         function idFromName( $name ) {
 143                 $fname = "User::idFromName";
 144
 145                 $nt = Title::newFromText( $name );
 146                 if( is_null( $nt ) ) {
 147                         # Illegal name
 148                         return null;
 149                 }
 150                 $dbr =& wfGetDB( DB_SLAVE );
 151                 $s = $dbr->selectRow( 'user', array( 'user_id' ), array( 'user_name' => $nt->getText() ), $fname );
 152
 153                 if ( $s === false ) {
 154                         return 0;
 155                 } else {
 156                         return $s->user_id;
 157                 }
 158         }
 159
 160         /**
 161          * does the string match an anonymous IPv4 address?
 162          *
 163          * Note: We match \d{1,3}\.\d{1,3}\.\d{1,3}\.xxx as an anonymous IP
 164          * address because the usemod software would "cloak" anonymous IP
 165          * addresses like this, if we allowed accounts like this to be created
 166          * new users could get the old edits of these anonymous users.
 167          *
 168          * @bug 3631
 169          *
 170          * @static
 171          * @param string $name Nickname of a user
 172          * @return bool
 173          */
 174         function isIP( $name ) {
 175                 return preg_match("/^\d{1,3}\.\d{1,3}\.\d{1,3}\.(?:xxx|\d{1,3})$/",$name);
 176                 /*return preg_match("/^
 177                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 178                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 179                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 180                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))
 181                 $/x", $name);*/
 182         }
 183
 184         /**
 185          * Is the input a valid username?
 186          *
 187          * Checks if the input is a valid username, we don't want an empty string,
 188          * an IP address, anything that containins slashes (would mess up subpages),
 189          * is longer than the maximum allowed username size or doesn't begin with
 190          * a capital letter.
 191          *
 192          * @param string $name
 193          * @return bool
 194          * @static
 195          */
 196         function isValidUserName( $name ) {
 197                 global $wgContLang, $wgMaxNameChars;
 198
 199                 if ( $name == ''
 200                 || User::isIP( $name )
 201                 || strpos( $name, '/' ) !== false
 202                 || strlen( $name ) > $wgMaxNameChars
 203                 || $name != $wgContLang->ucfirst( $name ) )
 204                         return false;
 205
 206                 // Ensure that the name can't be misresolved as a different title,
 207                 // such as with extra namespace keys at the start.
 208                 $parsed = Title::newFromText( $name );
 209                 if( is_null( $parsed )
 210                         || $parsed->getNamespace()
 211                         || strcmp( $name, $parsed->getPrefixedText() ) )
 212                         return false;
 213
 214                 // Check an additional blacklist of troublemaker characters.
 215                 // Should these be merged into the title char list?
 216                 $unicodeBlacklist = '/[' .
 217                         '\x{0080}-\x{009f}' . # iso-8859-1 control chars
 218                         '\x{00a0}' .          # non-breaking space
 219                         '\x{2000}-\x{200f}' . # various whitespace
 220                         '\x{2028}-\x{202f}' . # breaks and control chars
 221                         '\x{3000}' .          # ideographic space
 222                         '\x{e000}-\x{f8ff}' . # private use
 223                         ']/u';
 224                 if( preg_match( $unicodeBlacklist, $name ) ) {
 225                         return false;
 226                 }
 227
 228                 return true;
 229         }
 230
 231         /**
 232          * Is the input a valid password?
 233          *
 234          * @param string $password
 235          * @return bool
 236          * @static
 237          */
 238         function isValidPassword( $password ) {
 239                 global $wgMinimalPasswordLength;
 240                 return strlen( $password ) >= $wgMinimalPasswordLength;
 241         }
 242
 243         /**
 244          * Does the string match roughly an email address ?
 245          *
 246          * There used to be a regular expression here, it got removed because it
 247          * rejected valid addresses. Actually just check if there is '@' somewhere
 248          * in the given address.
 249          *
 250          * @todo Check for RFC 2822 compilance
 251          * @bug 959
 252          *
 253          * @param string $addr email address
 254          * @static
 255          * @return bool
 256          */
 257         function isValidEmailAddr ( $addr ) {
 258                 return ( trim( $addr ) != '' ) &&
 259                         (false !== strpos( $addr, '@' ) );
 260         }
 261
 262         /**
 263          * Count the number of edits of a user
 264          *
 265          * @param int $uid The user ID to check
 266          * @return int
 267          */
 268         function edits( $uid ) {
 269                 $fname = 'User::edits';
 270
 271                 $dbr =& wfGetDB( DB_SLAVE );
 272                 return $dbr->selectField(
 273                         'revision', 'count(*)',
 274                         array( 'rev_user' => $uid ),
 275                         $fname
 276                 );
 277         }
 278
 279         /**
 280          * probably return a random password
 281          * @return string probably a random password
 282          * @static
 283          * @todo Check what is doing really [AV]
 284          */
 285         function randomPassword() {
 286                 global $wgMinimalPasswordLength;
 287                 $pwchars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz';
 288                 $l = strlen( $pwchars ) - 1;
 289
 290                 $pwlength = max( 7, $wgMinimalPasswordLength );
 291                 $digit = mt_rand(0, $pwlength - 1);
 292                 $np = '';
 293                 for ( $i = 0; $i < $pwlength; $i++ ) {
 294                         $np .= $i == $digit ? chr( mt_rand(48, 57) ) : $pwchars{ mt_rand(0, $l)};
 295                 }
 296                 return $np;
 297         }
 298
 299         /**
 300          * Set properties to default
 301          * Used at construction. It will load per language default settings only
 302          * if we have an available language object.
 303          */
 304         function loadDefaults() {
 305                 static $n=0;
 306                 $n++;
 307                 $fname = 'User::loadDefaults' . $n;
 308                 wfProfileIn( $fname );
 309
 310                 global $wgCookiePrefix;
 311                 global $wgNamespacesToBeSearchedDefault;
 312
 313                 $this->mId = 0;
 314                 $this->mNewtalk = -1;
 315                 $this->mName = false;
 316                 $this->mRealName = $this->mEmail = '';
 317                 $this->mEmailAuthenticated = null;
 318                 $this->mPassword = $this->mNewpassword = '';
 319                 $this->mRights = array();
 320                 $this->mGroups = array();
 321                 $this->mOptions = User::getDefaultOptions();
 322
 323                 foreach( $wgNamespacesToBeSearchedDefault as $nsnum => $val ) {
 324                         $this->mOptions['searchNs'.$nsnum] = $val;
 325                 }
 326                 unset( $this->mSkin );
 327                 $this->mDataLoaded = false;
 328                 $this->mBlockedby = -1; # Unset
 329                 $this->setToken(); # Random
 330                 $this->mHash = false;
 331
 332                 if ( isset( $_COOKIE[$wgCookiePrefix.'LoggedOut'] ) ) {
 333                         $this->mTouched = wfTimestamp( TS_MW, $_COOKIE[$wgCookiePrefix.'LoggedOut'] );
 334                 }
 335                 else {
 336                         $this->mTouched = '0'; # Allow any pages to be cached
 337                 }
 338
 339                 $this->mRegistration = wfTimestamp( TS_MW );
 340
 341                 wfProfileOut( $fname );
 342         }
 343
 344         /**
 345          * Combine the language default options with any site-specific options
 346          * and add the default language variants.
 347          *
 348          * @return array
 349          * @static
 350          * @access private
 351          */
 352         function getDefaultOptions() {
 353                 /**
 354                  * Site defaults will override the global/language defaults
 355                  */
 356                 global $wgContLang, $wgDefaultUserOptions;
 357                 $defOpt = $wgDefaultUserOptions + $wgContLang->getDefaultUserOptions();
 358
 359                 /**
 360                  * default language setting
 361                  */
 362                 $variant = $wgContLang->getPreferredVariant();
 363                 $defOpt['variant'] = $variant;
 364                 $defOpt['language'] = $variant;
 365
 366                 return $defOpt;
 367         }
 368
 369         /**
 370          * Get a given default option value.
 371          *
 372          * @param string $opt
 373          * @return string
 374          * @static
 375          * @access public
 376          */
 377         function getDefaultOption( $opt ) {
 378                 $defOpts = User::getDefaultOptions();
 379                 if( isset( $defOpts[$opt] ) ) {
 380                         return $defOpts[$opt];
 381                 } else {
 382                         return '';
 383                 }
 384         }
 385
 386         /**
 387          * Get blocking information
 388          * @access private
 389          * @param bool $bFromSlave Specify whether to check slave or master. To improve performance,
 390          *  non-critical checks are done against slaves. Check when actually saving should be done against
 391          *  master.
 392          */
 393         function getBlockedStatus( $bFromSlave = true ) {
 394                 global $wgEnableSorbs, $wgProxyWhitelist;
 395
 396                 if ( -1 != $this->mBlockedby ) {
 397                         wfDebug( "User::getBlockedStatus: already loaded.\n" );
 398                         return;
 399                 }
 400
 401                 $fname = 'User::getBlockedStatus';
 402                 wfProfileIn( $fname );
 403                 wfDebug( "$fname: checking...\n" );
 404
 405                 $this->mBlockedby = 0;
 406                 $ip = wfGetIP();
 407
 408                 # User/IP blocking
 409                 $block = new Block();
 410                 $block->fromMaster( !$bFromSlave );
 411                 if ( $block->load( $ip , $this->mId ) ) {
 412                         wfDebug( "$fname: Found block.\n" );
 413                         $this->mBlockedby = $block->mBy;
 414                         $this->mBlockreason = $block->mReason;
 415                         if ( $this->isLoggedIn() ) {
 416                                 $this->spreadBlock();
 417                         }
 418                 } else {
 419                         wfDebug( "$fname: No block.\n" );
 420                 }
 421
 422                 # Proxy blocking
 423                 if ( !$this->isSysop() && !in_array( $ip, $wgProxyWhitelist ) ) {
 424
 425                         # Local list
 426                         if ( wfIsLocallyBlockedProxy( $ip ) ) {
 427                                 $this->mBlockedby = wfMsg( 'proxyblocker' );
 428                                 $this->mBlockreason = wfMsg( 'proxyblockreason' );
 429                         }
 430
 431                         # DNSBL
 432                         if ( !$this->mBlockedby && $wgEnableSorbs && !$this->getID() ) {
 433                                 if ( $this->inSorbsBlacklist( $ip ) ) {
 434                                         $this->mBlockedby = wfMsg( 'sorbs' );
 435                                         $this->mBlockreason = wfMsg( 'sorbsreason' );
 436                                 }
 437                         }
 438                 }
 439
 440                 # Extensions
 441                 wfRunHooks( 'GetBlockedStatus', array( &$this ) );
 442
 443                 wfProfileOut( $fname );
 444         }
 445
 446         function inSorbsBlacklist( $ip ) {
 447                 global $wgEnableSorbs;
 448                 return $wgEnableSorbs &&
 449                         $this->inDnsBlacklist( $ip, 'http.dnsbl.sorbs.net.' );
 450         }
 451
 452         function inOpmBlacklist( $ip ) {
 453                 global $wgEnableOpm;
 454                 return $wgEnableOpm &&
 455                         $this->inDnsBlacklist( $ip, 'opm.blitzed.org.' );
 456         }
 457
 458         function inDnsBlacklist( $ip, $base ) {
 459                 $fname = 'User::inDnsBlacklist';
 460                 wfProfileIn( $fname );
 461
 462                 $found = false;
 463                 $host = '';
 464
 465                 if ( preg_match( '/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/', $ip, $m ) ) {
 466                         # Make hostname
 467                         for ( $i=4; $i>=1; $i-- ) {
 468                                 $host .= $m[$i] . '.';
 469                         }
 470                         $host .= $base;
 471
 472                         # Send query
 473                         $ipList = gethostbynamel( $host );
 474
 475                         if ( $ipList ) {
 476                                 wfDebug( "Hostname $host is {$ipList[0]}, it's a proxy says $base!\n" );
 477                                 $found = true;
 478                         } else {
 479                                 wfDebug( "Requested $host, not found in $base.\n" );
 480                         }
 481                 }
 482
 483                 wfProfileOut( $fname );
 484                 return $found;
 485         }
 486
 487         /**
 488          * Primitive rate limits: enforce maximum actions per time period
 489          * to put a brake on flooding.
 490          *
 491          * Note: when using a shared cache like memcached, IP-address
 492          * last-hit counters will be shared across wikis.
 493          *
 494          * @return bool true if a rate limiter was tripped
 495          * @access public
 496          */
 497         function pingLimiter( $action='edit' ) {
 498                 global $wgRateLimits;
 499                 if( !isset( $wgRateLimits[$action] ) ) {
 500                         return false;
 501                 }
 502                 if( $this->isAllowed( 'delete' ) ) {
 503                         // goddam cabal
 504                         return false;
 505                 }
 506
 507                 global $wgMemc, $wgDBname, $wgRateLimitLog;
 508                 $fname = 'User::pingLimiter';
 509                 wfProfileIn( $fname );
 510
 511                 $limits = $wgRateLimits[$action];
 512                 $keys = array();
 513                 $id = $this->getId();
 514                 $ip = wfGetIP();
 515
 516                 if( isset( $limits['anon'] ) && $id == 0 ) {
 517                         $keys["$wgDBname:limiter:$action:anon"] = $limits['anon'];
 518                 }
 519
 520                 if( isset( $limits['user'] ) && $id != 0 ) {
 521                         $keys["$wgDBname:limiter:$action:user:$id"] = $limits['user'];
 522                 }
 523                 if( $this->isNewbie() ) {
 524                         if( isset( $limits['newbie'] ) && $id != 0 ) {
 525                                 $keys["$wgDBname:limiter:$action:user:$id"] = $limits['newbie'];
 526                         }
 527                         if( isset( $limits['ip'] ) ) {
 528                                 $keys["mediawiki:limiter:$action:ip:$ip"] = $limits['ip'];
 529                         }
 530                         if( isset( $limits['subnet'] ) && preg_match( '/^(\d+\.\d+\.\d+)\.\d+$/', $ip, $matches ) ) {
 531                                 $subnet = $matches[1];
 532                                 $keys["mediawiki:limiter:$action:subnet:$subnet"] = $limits['subnet'];
 533                         }
 534                 }
 535
 536                 $triggered = false;
 537                 foreach( $keys as $key => $limit ) {
 538                         list( $max, $period ) = $limit;
 539                         $summary = "(limit $max in {$period}s)";
 540                         $count = $wgMemc->get( $key );
 541                         if( $count ) {
 542                                 if( $count > $max ) {
 543                                         wfDebug( "$fname: tripped! $key at $count $summary\n" );
 544                                         if( $wgRateLimitLog ) {
 545                                                 @error_log( wfTimestamp( TS_MW ) . ' ' . $wgDBname . ': ' . $this->getName() . " tripped $key at $count $summary\n", 3, $wgRateLimitLog );
 546                                         }
 547                                         $triggered = true;
 548                                 } else {
 549                                         wfDebug( "$fname: ok. $key at $count $summary\n" );
 550                                 }
 551                         } else {
 552                                 wfDebug( "$fname: adding record for $key $summary\n" );
 553                                 $wgMemc->add( $key, 1, intval( $period ) );
 554                         }
 555                         $wgMemc->incr( $key );
 556                 }
 557
 558                 wfProfileOut( $fname );
 559                 return $triggered;
 560         }
 561
 562         /**
 563          * Check if user is blocked
 564          * @return bool True if blocked, false otherwise
 565          */
 566         function isBlocked( $bFromSlave = true ) { // hacked from false due to horrible probs on site
 567                 wfDebug( "User::isBlocked: enter\n" );
 568                 $this->getBlockedStatus( $bFromSlave );
 569                 return $this->mBlockedby !== 0;
 570         }
 571
 572         /**
 573          * Check if user is blocked from editing a particular article
 574          */
 575         function isBlockedFrom( $title, $bFromSlave = false ) {
 576                 global $wgBlockAllowsUTEdit;
 577                 $fname = 'User::isBlockedFrom';
 578                 wfProfileIn( $fname );
 579                 wfDebug( "$fname: enter\n" );
 580
 581                 if ( $wgBlockAllowsUTEdit && $title->getText() === $this->getName() &&
 582                   $title->getNamespace() == NS_USER_TALK )
 583                 {
 584                         $blocked = false;
 585                         wfDebug( "$fname: self-talk page, ignoring any blocks\n" );
 586                 } else {
 587                         wfDebug( "$fname: asking isBlocked()\n" );
 588                         $blocked = $this->isBlocked( $bFromSlave );
 589                 }
 590                 wfProfileOut( $fname );
 591                 return $blocked;
 592         }
 593
 594         /**
 595          * Get name of blocker
 596          * @return string name of blocker
 597          */
 598         function blockedBy() {
 599                 $this->getBlockedStatus();
 600                 return $this->mBlockedby;
 601         }
 602
 603         /**
 604          * Get blocking reason
 605          * @return string Blocking reason
 606          */
 607         function blockedFor() {
 608                 $this->getBlockedStatus();
 609                 return $this->mBlockreason;
 610         }
 611
 612         /**
 613          * Initialise php session
 614          */
 615         function SetupSession() {
 616                 global $wgSessionsInMemcached, $wgCookiePath, $wgCookieDomain;
 617                 if( $wgSessionsInMemcached ) {
 618                         require_once( 'MemcachedSessions.php' );
 619                 } elseif( 'files' != ini_get( 'session.save_handler' ) ) {
 620                         # If it's left on 'user' or another setting from another
 621                         # application, it will end up failing. Try to recover.
 622                         ini_set ( 'session.save_handler', 'files' );
 623                 }
 624                 session_set_cookie_params( 0, $wgCookiePath, $wgCookieDomain );
 625                 session_cache_limiter( 'private, must-revalidate' );
 626                 @session_start();
 627         }
 628
 629         /**
 630          * Create a new user object using data from session
 631          * @static
 632          */
 633         function loadFromSession() {
 634                 global $wgMemc, $wgDBname, $wgCookiePrefix;
 635
 636                 if ( isset( $_SESSION['wsUserID'] ) ) {
 637                         if ( 0 != $_SESSION['wsUserID'] ) {
 638                                 $sId = $_SESSION['wsUserID'];
 639                         } else {
 640                                 return new User();
 641                         }
 642                 } else if ( isset( $_COOKIE["{$wgCookiePrefix}UserID"] ) ) {
 643                         $sId = intval( $_COOKIE["{$wgCookiePrefix}UserID"] );
 644                         $_SESSION['wsUserID'] = $sId;
 645                 } else {
 646                         return new User();
 647                 }
 648                 if ( isset( $_SESSION['wsUserName'] ) ) {
 649                         $sName = $_SESSION['wsUserName'];
 650                 } else if ( isset( $_COOKIE["{$wgCookiePrefix}UserName"] ) ) {
 651                         $sName = $_COOKIE["{$wgCookiePrefix}UserName"];
 652                         $_SESSION['wsUserName'] = $sName;
 653                 } else {
 654                         return new User();
 655                 }
 656
 657                 $passwordCorrect = FALSE;
 658                 $user = $wgMemc->get( $key = "$wgDBname:user:id:$sId" );
 659                 if( !is_object( $user ) || $user->mVersion < MW_USER_VERSION ) {
 660                         # Expire old serialized objects; they may be corrupt.
 661                         $user = false;
 662                 }
 663                 if($makenew = !$user) {
 664                         wfDebug( "User::loadFromSession() unable to load from memcached\n" );
 665                         $user = new User();
 666                         $user->mId = $sId;
 667                         $user->loadFromDatabase();
 668                 } else {
 669                         wfDebug( "User::loadFromSession() got from cache!\n" );
 670                 }
 671
 672                 if ( isset( $_SESSION['wsToken'] ) ) {
 673                         $passwordCorrect = $_SESSION['wsToken'] == $user->mToken;
 674                 } else if ( isset( $_COOKIE["{$wgCookiePrefix}Token"] ) ) {
 675                         $passwordCorrect = $user->mToken == $_COOKIE["{$wgCookiePrefix}Token"];
 676                 } else {
 677                         return new User(); # Can't log in from session
 678                 }
 679
 680                 if ( ( $sName == $user->mName ) && $passwordCorrect ) {
 681                         if($makenew) {
 682                                 if($wgMemc->set( $key, $user ))
 683                                         wfDebug( "User::loadFromSession() successfully saved user\n" );
 684                                 else
 685                                         wfDebug( "User::loadFromSession() unable to save to memcached\n" );
 686                         }
 687                         return $user;
 688                 }
 689                 return new User(); # Can't log in from session
 690         }
 691
 692         /**
 693          * Load a user from the database
 694          */
 695         function loadFromDatabase() {
 696                 $fname = "User::loadFromDatabase";
 697
 698                 # Counter-intuitive, breaks various things, use User::setLoaded() if you want to suppress
 699                 # loading in a command line script, don't assume all command line scripts need it like this
 700                 #if ( $this->mDataLoaded || $wgCommandLineMode ) {
 701                 if ( $this->mDataLoaded ) {
 702                         return;
 703                 }
 704
 705                 # Paranoia
 706                 $this->mId = intval( $this->mId );
 707
 708                 /** Anonymous user */
 709                 if( !$this->mId ) {
 710                         /** Get rights */
 711                         $this->mRights = $this->getGroupPermissions( array( '*' ) );
 712                         $this->mDataLoaded = true;
 713                         return;
 714                 } # the following stuff is for non-anonymous users only
 715
 716                 $dbr =& wfGetDB( DB_SLAVE );
 717                 $s = $dbr->selectRow( 'user', array( 'user_name','user_password','user_newpassword','user_email',
 718                   'user_email_authenticated',
 719                   'user_real_name','user_options','user_touched', 'user_token', 'user_registration' ),
 720                   array( 'user_id' => $this->mId ), $fname );
 721
 722                 if ( $s !== false ) {
 723                         $this->mName = $s->user_name;
 724                         $this->mEmail = $s->user_email;
 725                         $this->mEmailAuthenticated = wfTimestampOrNull( TS_MW, $s->user_email_authenticated );
 726                         $this->mRealName = $s->user_real_name;
 727                         $this->mPassword = $s->user_password;
 728                         $this->mNewpassword = $s->user_newpassword;
 729                         $this->decodeOptions( $s->user_options );
 730                         $this->mTouched = wfTimestamp(TS_MW,$s->user_touched);
 731                         $this->mToken = $s->user_token;
 732                         $this->mRegistration = wfTimestampOrNull( TS_MW, $s->user_registration );
 733
 734                         $res = $dbr->select( 'user_groups',
 735                                 array( 'ug_group' ),
 736                                 array( 'ug_user' => $this->mId ),
 737                                 $fname );
 738                         $this->mGroups = array();
 739                         while( $row = $dbr->fetchObject( $res ) ) {
 740                                 $this->mGroups[] = $row->ug_group;
 741                         }
 742                         $implicitGroups = array( '*', 'user' );
 743
 744                         global $wgAutoConfirmAge;
 745                         $accountAge = time() - wfTimestampOrNull( TS_UNIX, $this->mRegistration );
 746                         if( $accountAge >= $wgAutoConfirmAge ) {
 747                                 $implicitGroups[] = 'autoconfirmed';
 748                         }
 749
 750                         $effectiveGroups = array_merge( $implicitGroups, $this->mGroups );
 751                         $this->mRights = $this->getGroupPermissions( $effectiveGroups );
 752                 }
 753
 754                 $this->mDataLoaded = true;
 755         }
 756
 757         function getID() { return $this->mId; }
 758         function setID( $v ) {
 759                 $this->mId = $v;
 760                 $this->mDataLoaded = false;
 761         }
 762
 763         function getName() {
 764                 $this->loadFromDatabase();
 765                 if ( $this->mName === false ) {
 766                         $this->mName = wfGetIP();
 767                 }
 768                 return $this->mName;
 769         }
 770
 771         function setName( $str ) {
 772                 $this->loadFromDatabase();
 773                 $this->mName = $str;
 774         }
 775
 776
 777         /**
 778          * Return the title dbkey form of the name, for eg user pages.
 779          * @return string
 780          * @access public
 781          */
 782         function getTitleKey() {
 783                 return str_replace( ' ', '_', $this->getName() );
 784         }
 785
 786         function getNewtalk() {
 787                 $this->loadFromDatabase();
 788
 789                 # Load the newtalk status if it is unloaded (mNewtalk=-1)
 790                 if( $this->mNewtalk === -1 ) {
 791                         $this->mNewtalk = false; # reset talk page status
 792
 793                         # Check memcached separately for anons, who have no
 794                         # entire User object stored in there.
 795                         if( !$this->mId ) {
 796                                 global $wgDBname, $wgMemc;
 797                                 $key = "$wgDBname:newtalk:ip:" . $this->getName();
 798                                 $newtalk = $wgMemc->get( $key );
 799                                 if( is_integer( $newtalk ) ) {
 800                                         $this->mNewtalk = (bool)$newtalk;
 801                                 } else {
 802                                         $this->mNewtalk = $this->checkNewtalk( 'user_ip', $this->getName() );
 803                                         $wgMemc->set( $key, $this->mNewtalk, time() ); // + 1800 );
 804                                 }
 805                         } else {
 806                                 $this->mNewtalk = $this->checkNewtalk( 'user_id', $this->mId );
 807                         }
 808                 }
 809
 810                 return (bool)$this->mNewtalk;
 811         }
 812
 813         /**
 814          * Return the talk page(s) this user has new messages on.
 815          */
 816         function getNewMessageLinks() {
 817         global  $wgDBname;
 818                 $talks = array();
 819                 if (!wfRunHooks('UserRetrieveNewTalks', array(&$this, &$talks)))
 820                         return $talks;
 821
 822                 if (!$this->getNewtalk())
 823                         return array();
 824                 $up = $this->getUserPage();
 825                 $utp = $up->getTalkPage();
 826                 return array(array("wiki" => $wgDBname, "link" => $utp->getLocalURL()));
 827         }
 828
 829
 830         /**
 831          * Perform a user_newtalk check on current slaves; if the memcached data
 832          * is funky we don't want newtalk state to get stuck on save, as that's
 833          * damn annoying.
 834          *
 835          * @param string $field
 836          * @param mixed $id
 837          * @return bool
 838          * @access private
 839          */
 840         function checkNewtalk( $field, $id ) {
 841                 $fname = 'User::checkNewtalk';
 842                 $dbr =& wfGetDB( DB_SLAVE );
 843                 $ok = $dbr->selectField( 'user_newtalk', $field,
 844                         array( $field => $id ), $fname );
 845                 return $ok !== false;
 846         }
 847
 848         /**
 849          * Add or update the
 850          * @param string $field
 851          * @param mixed $id
 852          * @access private
 853          */
 854         function updateNewtalk( $field, $id ) {
 855                 $fname = 'User::updateNewtalk';
 856                 if( $this->checkNewtalk( $field, $id ) ) {
 857                         wfDebug( "$fname already set ($field, $id), ignoring\n" );
 858                         return false;
 859                 }
 860                 $dbw =& wfGetDB( DB_MASTER );
 861                 $dbw->insert( 'user_newtalk',
 862                         array( $field => $id ),
 863                         $fname,
 864                         'IGNORE' );
 865                 wfDebug( "$fname: set on ($field, $id)\n" );
 866                 return true;
 867         }
 868
 869         /**
 870          * Clear the new messages flag for the given user
 871          * @param string $field
 872          * @param mixed $id
 873          * @access private
 874          */
 875         function deleteNewtalk( $field, $id ) {
 876                 $fname = 'User::deleteNewtalk';
 877                 if( !$this->checkNewtalk( $field, $id ) ) {
 878                         wfDebug( "$fname: already gone ($field, $id), ignoring\n" );
 879                         return false;
 880                 }
 881                 $dbw =& wfGetDB( DB_MASTER );
 882                 $dbw->delete( 'user_newtalk',
 883                         array( $field => $id ),
 884                         $fname );
 885                 wfDebug( "$fname: killed on ($field, $id)\n" );
 886                 return true;
 887         }
 888
 889         /**
 890          * Update the 'You have new messages!' status.
 891          * @param bool $val
 892          */
 893         function setNewtalk( $val ) {
 894                 if( wfReadOnly() ) {
 895                         return;
 896                 }
 897
 898                 $this->loadFromDatabase();
 899                 $this->mNewtalk = $val;
 900
 901                 $fname = 'User::setNewtalk';
 902
 903                 if( $this->isAnon() ) {
 904                         $field = 'user_ip';
 905                         $id = $this->getName();
 906                 } else {
 907                         $field = 'user_id';
 908                         $id = $this->getId();
 909                 }
 910
 911                 if( $val ) {
 912                         $changed = $this->updateNewtalk( $field, $id );
 913                 } else {
 914                         $changed = $this->deleteNewtalk( $field, $id );
 915                 }
 916
 917                 if( $changed ) {
 918                         if( $this->isAnon() ) {
 919                                 // Anons have a separate memcached space, since
 920                                 // user records aren't kept for them.
 921                                 global $wgDBname, $wgMemc;
 922                                 $key = "$wgDBname:newtalk:ip:$val";
 923                                 $wgMemc->set( $key, $val ? 1 : 0 );
 924                         } else {
 925                                 if( $val ) {
 926                                         // Make sure the user page is watched, so a notification
 927                                         // will be sent out if enabled.
 928                                         $this->addWatch( $this->getTalkPage() );
 929                                 }
 930                         }
 931                         $this->invalidateCache();
 932                         $this->saveSettings();
 933                 }
 934         }
 935
 936         function invalidateCache() {
 937                 global $wgClockSkewFudge;
 938                 $this->loadFromDatabase();
 939                 $this->mTouched = wfTimestamp(TS_MW, time() + $wgClockSkewFudge );
 940                 # Don't forget to save the options after this or
 941                 # it won't take effect!
 942         }
 943
 944         function validateCache( $timestamp ) {
 945                 $this->loadFromDatabase();
 946                 return ($timestamp >= $this->mTouched);
 947         }
 948
 949         /**
 950          * Encrypt a password.
 951          * It can eventuall salt a password @see User::addSalt()
 952          * @param string $p clear Password.
 953          * @return string Encrypted password.
 954          */
 955         function encryptPassword( $p ) {
 956                 return wfEncryptPassword( $this->mId, $p );
 957         }
 958
 959         # Set the password and reset the random token
 960         function setPassword( $str ) {
 961                 $this->loadFromDatabase();
 962                 $this->setToken();
 963                 $this->mPassword = $this->encryptPassword( $str );
 964                 $this->mNewpassword = '';
 965         }
 966
 967         # Set the random token (used for persistent authentication)
 968         function setToken( $token = false ) {
 969                 global $wgSecretKey, $wgProxyKey, $wgDBname;
 970                 if ( !$token ) {
 971                         if ( $wgSecretKey ) {
 972                                 $key = $wgSecretKey;
 973                         } elseif ( $wgProxyKey ) {
 974                                 $key = $wgProxyKey;
 975                         } else {
 976                                 $key = microtime();
 977                         }
 978                         $this->mToken = md5( $key . mt_rand( 0, 0x7fffffff ) . $wgDBname . $this->mId );
 979                 } else {
 980                         $this->mToken = $token;
 981                 }
 982         }
 983
 984
 985         function setCookiePassword( $str ) {
 986                 $this->loadFromDatabase();
 987                 $this->mCookiePassword = md5( $str );
 988         }
 989
 990         function setNewpassword( $str ) {
 991                 $this->loadFromDatabase();
 992                 $this->mNewpassword = $this->encryptPassword( $str );
 993         }
 994
 995         function getEmail() {
 996                 $this->loadFromDatabase();
 997                 return $this->mEmail;
 998         }
 999
1000         function getEmailAuthenticationTimestamp() {
1001                 $this->loadFromDatabase();
1002                 return $this->mEmailAuthenticated;
1003         }
1004
1005         function setEmail( $str ) {
1006                 $this->loadFromDatabase();
1007                 $this->mEmail = $str;
1008         }
1009
1010         function getRealName() {
1011                 $this->loadFromDatabase();
1012                 return $this->mRealName;
1013         }
1014
1015         function setRealName( $str ) {
1016                 $this->loadFromDatabase();
1017                 $this->mRealName = $str;
1018         }
1019
1020         /**
1021          * @param string $oname The option to check
1022          * @return string
1023          */
1024         function getOption( $oname ) {
1025                 $this->loadFromDatabase();
1026                 if ( array_key_exists( $oname, $this->mOptions ) ) {
1027                         return trim( $this->mOptions[$oname] );
1028                 } else {
1029                         return '';
1030                 }
1031         }
1032
1033         /**
1034          * @param string $oname The option to check
1035          * @return bool False if the option is not selected, true if it is
1036          */
1037         function getBoolOption( $oname ) {
1038                 return (bool)$this->getOption( $oname );
1039         }
1040
1041         function setOption( $oname, $val ) {
1042                 $this->loadFromDatabase();
1043                 if ( $oname == 'skin' ) {
1044                         # Clear cached skin, so the new one displays immediately in Special:Preferences
1045                         unset( $this->mSkin );
1046                 }
1047                 $this->mOptions[$oname] = $val;
1048                 $this->invalidateCache();
1049         }
1050
1051         function getRights() {
1052                 $this->loadFromDatabase();
1053                 return $this->mRights;
1054         }
1055
1056         /**
1057          * Get the list of explicit group memberships this user has.
1058          * The implicit * and user groups are not included.
1059          * @return array of strings
1060          */
1061         function getGroups() {
1062                 $this->loadFromDatabase();
1063                 return $this->mGroups;
1064         }
1065
1066         /**
1067          * Get the list of implicit group memberships this user has.
1068          * This includes all explicit groups, plus 'user' if logged in
1069          * and '*' for all accounts.
1070          * @return array of strings
1071          */
1072         function getEffectiveGroups() {
1073                 $base = array( '*' );
1074                 if( $this->isLoggedIn() ) {
1075                         $base[] = 'user';
1076                 }
1077                 return array_merge( $base, $this->getGroups() );
1078         }
1079
1080         /**
1081          * Add the user to the given group.
1082          * This takes immediate effect.
1083          * @string $group
1084          */
1085         function addGroup( $group ) {
1086                 $dbw =& wfGetDB( DB_MASTER );
1087                 $dbw->insert( 'user_groups',
1088                         array(
1089                                 'ug_user'  => $this->getID(),
1090                                 'ug_group' => $group,
1091                         ),
1092                         'User::addGroup',
1093                         array( 'IGNORE' ) );
1094
1095                 $this->mGroups = array_merge( $this->mGroups, array( $group ) );
1096                 $this->mRights = User::getGroupPermissions( $this->getEffectiveGroups() );
1097
1098                 $this->invalidateCache();
1099                 $this->saveSettings();
1100         }
1101
1102         /**
1103          * Remove the user from the given group.
1104          * This takes immediate effect.
1105          * @string $group
1106          */
1107         function removeGroup( $group ) {
1108                 $dbw =& wfGetDB( DB_MASTER );
1109                 $dbw->delete( 'user_groups',
1110                         array(
1111                                 'ug_user'  => $this->getID(),
1112                                 'ug_group' => $group,
1113                         ),
1114                         'User::removeGroup' );
1115
1116                 $this->mGroups = array_diff( $this->mGroups, array( $group ) );
1117                 $this->mRights = User::getGroupPermissions( $this->getEffectiveGroups() );
1118
1119                 $this->invalidateCache();
1120                 $this->saveSettings();
1121         }
1122
1123
1124         /**
1125          * A more legible check for non-anonymousness.
1126          * Returns true if the user is not an anonymous visitor.
1127          *
1128          * @return bool
1129          */
1130         function isLoggedIn() {
1131                 return( $this->getID() != 0 );
1132         }
1133
1134         /**
1135          * A more legible check for anonymousness.
1136          * Returns true if the user is an anonymous visitor.
1137          *
1138          * @return bool
1139          */
1140         function isAnon() {
1141                 return !$this->isLoggedIn();
1142         }
1143
1144         /**
1145          * Check if a user is sysop
1146          * @deprecated
1147          */
1148         function isSysop() {
1149                 return $this->isAllowed( 'protect' );
1150         }
1151
1152         /** @deprecated */
1153         function isDeveloper() {
1154                 return $this->isAllowed( 'siteadmin' );
1155         }
1156
1157         /** @deprecated */
1158         function isBureaucrat() {
1159                 return $this->isAllowed( 'makesysop' );
1160         }
1161
1162         /**
1163          * Whether the user is a bot
1164          * @todo need to be migrated to the new user level management sytem
1165          */
1166         function isBot() {
1167                 $this->loadFromDatabase();
1168                 return in_array( 'bot', $this->mRights );
1169         }
1170
1171         /**
1172          * Check if user is allowed to access a feature / make an action
1173          * @param string $action Action to be checked (see $wgAvailableRights in Defines.php for possible actions).
1174          * @return boolean True: action is allowed, False: action should not be allowed
1175          */
1176         function isAllowed($action='') {
1177                 if ( $action === '' )
1178                         // In the spirit of DWIM
1179                         return true;
1180
1181                 $this->loadFromDatabase();
1182                 return in_array( $action , $this->mRights );
1183         }
1184
1185         /**
1186          * Load a skin if it doesn't exist or return it
1187          * @todo FIXME : need to check the old failback system [AV]
1188          */
1189         function &getSkin() {
1190                 global $IP, $wgRequest;
1191                 if ( ! isset( $this->mSkin ) ) {
1192                         $fname = 'User::getSkin';
1193                         wfProfileIn( $fname );
1194
1195                         # get the user skin
1196                         $userSkin = $this->getOption( 'skin' );
1197                         $userSkin = $wgRequest->getVal('useskin', $userSkin);
1198
1199                         $this->mSkin =& Skin::newFromKey( $userSkin );
1200                         wfProfileOut( $fname );
1201                 }
1202                 return $this->mSkin;
1203         }
1204
1205         /**#@+
1206          * @param string $title Article title to look at
1207          */
1208
1209         /**
1210          * Check watched status of an article
1211          * @return bool True if article is watched
1212          */
1213         function isWatched( $title ) {
1214                 $wl = WatchedItem::fromUserTitle( $this, $title );
1215                 return $wl->isWatched();
1216         }
1217
1218         /**
1219          * Watch an article
1220          */
1221         function addWatch( $title ) {
1222                 $wl = WatchedItem::fromUserTitle( $this, $title );
1223                 $wl->addWatch();
1224                 $this->invalidateCache();
1225         }
1226
1227         /**
1228          * Stop watching an article
1229          */
1230         function removeWatch( $title ) {
1231                 $wl = WatchedItem::fromUserTitle( $this, $title );
1232                 $wl->removeWatch();
1233                 $this->invalidateCache();
1234         }
1235
1236         /**
1237          * Clear the user's notification timestamp for the given title.
1238          * If e-notif e-mails are on, they will receive notification mails on
1239          * the next change of the page if it's watched etc.
1240          */
1241         function clearNotification( &$title ) {
1242                 global $wgUser, $wgUseEnotif;
1243
1244
1245                 if ($title->getNamespace() == NS_USER_TALK &&
1246                         $title->getText() == $this->getName() ) {
1247                         if (!wfRunHooks('UserClearNewTalkNotification', array(&$this)))
1248                                 return;
1249                         $this->setNewtalk( false );
1250                 }
1251
1252                 if( !$wgUseEnotif ) {
1253                         return;
1254                 }
1255
1256                 if( $this->isAnon() ) {
1257                         // Nothing else to do...
1258                         return;
1259                 }
1260
1261                 // Only update the timestamp if the page is being watched.
1262                 // The query to find out if it is watched is cached both in memcached and per-invocation,
1263                 // and when it does have to be executed, it can be on a slave
1264                 // If this is the user's newtalk page, we always update the timestamp
1265                 if ($title->getNamespace() == NS_USER_TALK &&
1266                         $title->getText() == $wgUser->getName())
1267                 {
1268                         $watched = true;
1269                 } elseif ( $this->getID() == $wgUser->getID() ) {
1270                         $watched = $title->userIsWatching();
1271                 } else {
1272                         $watched = true;
1273                 }
1274
1275                 // If the page is watched by the user (or may be watched), update the timestamp on any
1276                 // any matching rows
1277                 if ( $watched ) {
1278                         $dbw =& wfGetDB( DB_MASTER );
1279                         $success = $dbw->update( 'watchlist',
1280                                         array( /* SET */
1281                                                 'wl_notificationtimestamp' => NULL
1282                                         ), array( /* WHERE */
1283                                                 'wl_title' => $title->getDBkey(),
1284                                                 'wl_namespace' => $title->getNamespace(),
1285                                                 'wl_user' => $this->getID()
1286                                         ), 'User::clearLastVisited'
1287                         );
1288                 }
1289         }
1290
1291         /**#@-*/
1292
1293         /**
1294          * Resets all of the given user's page-change notification timestamps.
1295          * If e-notif e-mails are on, they will receive notification mails on
1296          * the next change of any watched page.
1297          *
1298          * @param int $currentUser user ID number
1299          * @access public
1300          */
1301         function clearAllNotifications( $currentUser ) {
1302                 global $wgUseEnotif;
1303                 if ( !$wgUseEnotif ) {
1304                         $this->setNewtalk( false );
1305                         return;
1306                 }
1307                 if( $currentUser != 0 )  {
1308
1309                         $dbw =& wfGetDB( DB_MASTER );
1310                         $success = $dbw->update( 'watchlist',
1311                                 array( /* SET */
1312                                         'wl_notificationtimestamp' => 0
1313                                 ), array( /* WHERE */
1314                                         'wl_user' => $currentUser
1315                                 ), 'UserMailer::clearAll'
1316                         );
1317
1318                 #       we also need to clear here the "you have new message" notification for the own user_talk page
1319                 #       This is cleared one page view later in Article::viewUpdates();
1320                 }
1321         }
1322
1323         /**
1324          * @access private
1325          * @return string Encoding options
1326          */
1327         function encodeOptions() {
1328                 $a = array();
1329                 foreach ( $this->mOptions as $oname => $oval ) {
1330                         array_push( $a, $oname.'='.$oval );
1331                 }
1332                 $s = implode( "\n", $a );
1333                 return $s;
1334         }
1335
1336         /**
1337          * @access private
1338          */
1339         function decodeOptions( $str ) {
1340                 $a = explode( "\n", $str );
1341                 foreach ( $a as $s ) {
1342                         if ( preg_match( "/^(.[^=]*)=(.*)$/", $s, $m ) ) {
1343                                 $this->mOptions[$m[1]] = $m[2];
1344                         }
1345                 }
1346         }
1347
1348         function setCookies() {
1349                 global $wgCookieExpiration, $wgCookiePath, $wgCookieDomain, $wgCookieSecure, $wgCookiePrefix;
1350                 if ( 0 == $this->mId ) return;
1351                 $this->loadFromDatabase();
1352                 $exp = time() + $wgCookieExpiration;
1353
1354                 $_SESSION['wsUserID'] = $this->mId;
1355                 setcookie( $wgCookiePrefix.'UserID', $this->mId, $exp, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1356
1357                 $_SESSION['wsUserName'] = $this->getName();
1358                 setcookie( $wgCookiePrefix.'UserName', $this->getName(), $exp, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1359
1360                 $_SESSION['wsToken'] = $this->mToken;
1361                 if ( 1 == $this->getOption( 'rememberpassword' ) ) {
1362                         setcookie( $wgCookiePrefix.'Token', $this->mToken, $exp, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1363                 } else {
1364                         setcookie( $wgCookiePrefix.'Token', '', time() - 3600 );
1365                 }
1366         }
1367
1368         /**
1369          * Logout user
1370          * It will clean the session cookie
1371          */
1372         function logout() {
1373                 global $wgCookiePath, $wgCookieDomain, $wgCookieSecure, $wgCookiePrefix;
1374                 $this->loadDefaults();
1375                 $this->setLoaded( true );
1376
1377                 $_SESSION['wsUserID'] = 0;
1378
1379                 setcookie( $wgCookiePrefix.'UserID', '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1380                 setcookie( $wgCookiePrefix.'Token', '', time() - 3600, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1381
1382                 # Remember when user logged out, to prevent seeing cached pages
1383                 setcookie( $wgCookiePrefix.'LoggedOut', wfTimestampNow(), time() + 86400, $wgCookiePath, $wgCookieDomain, $wgCookieSecure );
1384         }
1385
1386         /**
1387          * Save object settings into database
1388          */
1389         function saveSettings() {
1390                 global $wgMemc, $wgDBname;
1391                 $fname = 'User::saveSettings';
1392
1393                 if ( wfReadOnly() ) { return; }
1394                 if ( 0 == $this->mId ) { return; }
1395
1396                 $dbw =& wfGetDB( DB_MASTER );
1397                 $dbw->update( 'user',
1398                         array( /* SET */
1399                                 'user_name' => $this->mName,
1400                                 'user_password' => $this->mPassword,
1401                                 'user_newpassword' => $this->mNewpassword,
1402                                 'user_real_name' => $this->mRealName,
1403                                 'user_email' => $this->mEmail,
1404                                 'user_email_authenticated' => $dbw->timestampOrNull( $this->mEmailAuthenticated ),
1405                                 'user_options' => $this->encodeOptions(),
1406                                 'user_touched' => $dbw->timestamp($this->mTouched),
1407                                 'user_token' => $this->mToken
1408                         ), array( /* WHERE */
1409                                 'user_id' => $this->mId
1410                         ), $fname
1411                 );
1412                 $wgMemc->delete( "$wgDBname:user:id:$this->mId" );
1413         }
1414
1415
1416         /**
1417          * Checks if a user with the given name exists, returns the ID
1418          */
1419         function idForName() {
1420                 $fname = 'User::idForName';
1421
1422                 $gotid = 0;
1423                 $s = trim( $this->getName() );
1424                 if ( 0 == strcmp( '', $s ) ) return 0;
1425
1426                 $dbr =& wfGetDB( DB_SLAVE );
1427                 $id = $dbr->selectField( 'user', 'user_id', array( 'user_name' => $s ), $fname );
1428                 if ( $id === false ) {
1429                         $id = 0;
1430                 }
1431                 return $id;
1432         }
1433
1434         /**
1435          * Add user object to the database
1436          */
1437         function addToDatabase() {
1438                 $fname = 'User::addToDatabase';
1439                 $dbw =& wfGetDB( DB_MASTER );
1440                 $seqVal = $dbw->nextSequenceValue( 'user_user_id_seq' );
1441                 $dbw->insert( 'user',
1442                         array(
1443                                 'user_id' => $seqVal,
1444                                 'user_name' => $this->mName,
1445                                 'user_password' => $this->mPassword,
1446                                 'user_newpassword' => $this->mNewpassword,
1447                                 'user_email' => $this->mEmail,
1448                                 'user_email_authenticated' => $dbw->timestampOrNull( $this->mEmailAuthenticated ),
1449                                 'user_real_name' => $this->mRealName,
1450                                 'user_options' => $this->encodeOptions(),
1451                                 'user_token' => $this->mToken,
1452                                 'user_registration' => $dbw->timestamp( $this->mRegistration ),
1453                         ), $fname
1454                 );
1455                 $this->mId = $dbw->insertId();
1456         }
1457
1458         function spreadBlock() {
1459                 # If the (non-anonymous) user is blocked, this function will block any IP address
1460                 # that they successfully log on from.
1461                 $fname = 'User::spreadBlock';
1462
1463                 wfDebug( "User:spreadBlock()\n" );
1464                 if ( $this->mId == 0 ) {
1465                         return;
1466                 }
1467
1468                 $userblock = Block::newFromDB( '', $this->mId );
1469                 if ( !$userblock->isValid() ) {
1470                         return;
1471                 }
1472
1473                 # Check if this IP address is already blocked
1474                 $ipblock = Block::newFromDB( wfGetIP() );
1475                 if ( $ipblock->isValid() ) {
1476                         # If the user is already blocked. Then check if the autoblock would
1477                         # excede the user block. If it would excede, then do nothing, else
1478                         # prolong block time
1479                         if ($userblock->mExpiry &&
1480                                 ($userblock->mExpiry < Block::getAutoblockExpiry($ipblock->mTimestamp))) {
1481                                 return;
1482                         }
1483                         # Just update the timestamp
1484                         $ipblock->updateTimestamp();
1485                         return;
1486                 }
1487
1488                 # Make a new block object with the desired properties
1489                 wfDebug( "Autoblocking {$this->mName}@" . wfGetIP() . "\n" );
1490                 $ipblock->mAddress = wfGetIP();
1491                 $ipblock->mUser = 0;
1492                 $ipblock->mBy = $userblock->mBy;
1493                 $ipblock->mReason = wfMsg( 'autoblocker', $this->getName(), $userblock->mReason );
1494                 $ipblock->mTimestamp = wfTimestampNow();
1495                 $ipblock->mAuto = 1;
1496                 # If the user is already blocked with an expiry date, we don't
1497                 # want to pile on top of that!
1498                 if($userblock->mExpiry) {
1499                         $ipblock->mExpiry = min ( $userblock->mExpiry, Block::getAutoblockExpiry( $ipblock->mTimestamp ));
1500                 } else {
1501                         $ipblock->mExpiry = Block::getAutoblockExpiry( $ipblock->mTimestamp );
1502                 }
1503
1504                 # Insert it
1505                 $ipblock->insert();
1506
1507         }
1508
1509         /**
1510          * Generate a string which will be different for any combination of
1511          * user options which would produce different parser output.
1512          * This will be used as part of the hash key for the parser cache,
1513          * so users will the same options can share the same cached data
1514          * safely.
1515          *
1516          * Extensions which require it should install 'PageRenderingHash' hook,
1517          * which will give them a chance to modify this key based on their own
1518          * settings.
1519          *
1520          * @return string
1521          */
1522         function getPageRenderingHash() {
1523                 global $wgContLang;
1524                 if( $this->mHash ){
1525                         return $this->mHash;
1526                 }
1527
1528                 // stubthreshold is only included below for completeness,
1529                 // it will always be 0 when this function is called by parsercache.
1530
1531                 $confstr =        $this->getOption( 'math' );
1532                 $confstr .= '!' . $this->getOption( 'stubthreshold' );
1533                 $confstr .= '!' . $this->getOption( 'date' );
1534                 $confstr .= '!' . ($this->getOption( 'numberheadings' ) ? '1' : '');
1535                 $confstr .= '!' . $this->getOption( 'language' );
1536                 $confstr .= '!' . $this->getOption( 'thumbsize' );
1537                 // add in language specific options, if any
1538                 $extra = $wgContLang->getExtraHashOptions();
1539                 $confstr .= $extra;
1540
1541                 // Give a chance for extensions to modify the hash, if they have
1542                 // extra options or other effects on the parser cache.
1543                 wfRunHooks( 'PageRenderingHash', array( &$confstr ) );
1544
1545                 $this->mHash = $confstr;
1546                 return $confstr;
1547         }
1548
1549         function isAllowedToCreateAccount() {
1550                 return $this->isAllowed( 'createaccount' ) && !$this->isBlocked();
1551         }
1552
1553         /**
1554          * Set mDataLoaded, return previous value
1555          * Use this to prevent DB access in command-line scripts or similar situations
1556          */
1557         function setLoaded( $loaded ) {
1558                 return wfSetVar( $this->mDataLoaded, $loaded );
1559         }
1560
1561         /**
1562          * Get this user's personal page title.
1563          *
1564          * @return Title
1565          * @access public
1566          */
1567         function getUserPage() {
1568                 return Title::makeTitle( NS_USER, $this->getName() );
1569         }
1570
1571         /**
1572          * Get this user's talk page title.
1573          *
1574          * @return Title
1575          * @access public
1576          */
1577         function getTalkPage() {
1578                 $title = $this->getUserPage();
1579                 return $title->getTalkPage();
1580         }
1581
1582         /**
1583          * @static
1584          */
1585         function getMaxID() {
1586                 static $res; // cache
1587
1588                 if ( isset( $res ) )
1589                         return $res;
1590                 else {
1591                         $dbr =& wfGetDB( DB_SLAVE );
1592                         return $res = $dbr->selectField( 'user', 'max(user_id)', false, 'User::getMaxID' );
1593                 }
1594         }
1595
1596         /**
1597          * Determine whether the user is a newbie. Newbies are either
1598          * anonymous IPs, or the most recently created accounts.
1599          * @return bool True if it is a newbie.
1600          */
1601         function isNewbie() {
1602                 return !$this->isAllowed( 'autoconfirmed' );
1603         }
1604
1605         /**
1606          * Check to see if the given clear-text password is one of the accepted passwords
1607          * @param string $password User password.
1608          * @return bool True if the given password is correct otherwise False.
1609          */
1610         function checkPassword( $password ) {
1611                 global $wgAuth, $wgMinimalPasswordLength;
1612                 $this->loadFromDatabase();
1613
1614                 // Even though we stop people from creating passwords that
1615                 // are shorter than this, doesn't mean people wont be able
1616                 // to. Certain authentication plugins do NOT want to save
1617                 // domain passwords in a mysql database, so we should
1618                 // check this (incase $wgAuth->strict() is false).
1619                 if( strlen( $password ) < $wgMinimalPasswordLength ) {
1620                         return false;
1621                 }
1622
1623                 if( $wgAuth->authenticate( $this->getName(), $password ) ) {
1624                         return true;
1625                 } elseif( $wgAuth->strict() ) {
1626                         /* Auth plugin doesn't allow local authentication */
1627                         return false;
1628                 }
1629                 $ep = $this->encryptPassword( $password );
1630                 if ( 0 == strcmp( $ep, $this->mPassword ) ) {
1631                         return true;
1632                 } elseif ( ($this->mNewpassword != '') && (0 == strcmp( $ep, $this->mNewpassword )) ) {
1633                         return true;
1634                 } elseif ( function_exists( 'iconv' ) ) {
1635                         # Some wikis were converted from ISO 8859-1 to UTF-8, the passwords can't be converted
1636                         # Check for this with iconv
1637                         $cp1252hash = $this->encryptPassword( iconv( 'UTF-8', 'WINDOWS-1252', $password ) );
1638                         if ( 0 == strcmp( $cp1252hash, $this->mPassword ) ) {
1639                                 return true;
1640                         }
1641                 }
1642                 return false;
1643         }
1644
1645         /**
1646          * Initialize (if necessary) and return a session token value
1647          * which can be used in edit forms to show that the user's
1648          * login credentials aren't being hijacked with a foreign form
1649          * submission.
1650          *
1651          * @param mixed $salt - Optional function-specific data for hash.
1652          *                      Use a string or an array of strings.
1653          * @return string
1654          * @access public
1655          */
1656         function editToken( $salt = '' ) {
1657                 if( !isset( $_SESSION['wsEditToken'] ) ) {
1658                         $token = $this->generateToken();
1659                         $_SESSION['wsEditToken'] = $token;
1660                 } else {
1661                         $token = $_SESSION['wsEditToken'];
1662                 }
1663                 if( is_array( $salt ) ) {
1664                         $salt = implode( '|', $salt );
1665                 }
1666                 return md5( $token . $salt );
1667         }
1668
1669         /**
1670          * Generate a hex-y looking random token for various uses.
1671          * Could be made more cryptographically sure if someone cares.
1672          * @return string
1673          */
1674         function generateToken( $salt = '' ) {
1675                 $token = dechex( mt_rand() ) . dechex( mt_rand() );
1676                 return md5( $token . $salt );
1677         }
1678
1679         /**
1680          * Check given value against the token value stored in the session.
1681          * A match should confirm that the form was submitted from the
1682          * user's own login session, not a form submission from a third-party
1683          * site.
1684          *
1685          * @param string $val - the input value to compare
1686          * @param string $salt - Optional function-specific data for hash
1687          * @return bool
1688          * @access public
1689          */
1690         function matchEditToken( $val, $salt = '' ) {
1691                 global $wgMemc;
1692                 $sessionToken = $this->editToken( $salt );
1693                 if ( $val != $sessionToken ) {
1694                         $logfile = '/home/wikipedia/logs/session_debug/session.log';
1695                         $mckey = memsess_key( session_id() );
1696                         $uname = @posix_uname();
1697                         $msg = date('r') . "\nEdit token mismatch, expected $sessionToken got $val\n" .
1698                         'apache server=' . $uname['nodename'] . "\n" .
1699                         'session_id = ' . session_id() . "\n" .
1700                         '$_SESSION=' . var_export( $_SESSION, true ) . "\n" .
1701                         '$_COOKIE=' . var_export( $_COOKIE, true ) . "\n" .
1702                         "mc get($mckey) = " . var_export( $wgMemc->get( $mckey ), true ) . "\n\n\n";
1703
1704                         @error_log( $msg, 3, $logfile );
1705                 }
1706                 return $val == $sessionToken;
1707         }
1708
1709         /**
1710          * Generate a new e-mail confirmation token and send a confirmation
1711          * mail to the user's given address.
1712          *
1713          * @return mixed True on success, a WikiError object on failure.
1714          */
1715         function sendConfirmationMail() {
1716                 global $wgContLang;
1717                 $url = $this->confirmationTokenUrl( $expiration );
1718                 return $this->sendMail( wfMsg( 'confirmemail_subject' ),
1719                         wfMsg( 'confirmemail_body',
1720                                 wfGetIP(),
1721                                 $this->getName(),
1722                                 $url,
1723                                 $wgContLang->timeanddate( $expiration, false ) ) );
1724         }
1725
1726         /**
1727          * Send an e-mail to this user's account. Does not check for
1728          * confirmed status or validity.
1729          *
1730          * @param string $subject
1731          * @param string $body
1732          * @param strong $from Optional from address; default $wgPasswordSender will be used otherwise.
1733          * @return mixed True on success, a WikiError object on failure.
1734          */
1735         function sendMail( $subject, $body, $from = null ) {
1736                 if( is_null( $from ) ) {
1737                         global $wgPasswordSender;
1738                         $from = $wgPasswordSender;
1739                 }
1740
1741                 require_once( 'UserMailer.php' );
1742                 $to = new MailAddress( $this );
1743                 $sender = new MailAddress( $from );
1744                 $error = userMailer( $to, $sender, $subject, $body );
1745
1746                 if( $error == '' ) {
1747                         return true;
1748                 } else {
1749                         return new WikiError( $error );
1750                 }
1751         }
1752
1753         /**
1754          * Generate, store, and return a new e-mail confirmation code.
1755          * A hash (unsalted since it's used as a key) is stored.
1756          * @param &$expiration mixed output: accepts the expiration time
1757          * @return string
1758          * @access private
1759          */
1760         function confirmationToken( &$expiration ) {
1761                 $fname = 'User::confirmationToken';
1762
1763                 $now = time();
1764                 $expires = $now + 7 * 24 * 60 * 60;
1765                 $expiration = wfTimestamp( TS_MW, $expires );
1766
1767                 $token = $this->generateToken( $this->mId . $this->mEmail . $expires );
1768                 $hash = md5( $token );
1769
1770                 $dbw =& wfGetDB( DB_MASTER );
1771                 $dbw->update( 'user',
1772                         array( 'user_email_token'         => $hash,
1773                                'user_email_token_expires' => $dbw->timestamp( $expires ) ),
1774                         array( 'user_id'                  => $this->mId ),
1775                         $fname );
1776
1777                 return $token;
1778         }
1779
1780         /**
1781          * Generate and store a new e-mail confirmation token, and return
1782          * the URL the user can use to confirm.
1783          * @param &$expiration mixed output: accepts the expiration time
1784          * @return string
1785          * @access private
1786          */
1787         function confirmationTokenUrl( &$expiration ) {
1788                 $token = $this->confirmationToken( $expiration );
1789                 $title = Title::makeTitle( NS_SPECIAL, 'Confirmemail/' . $token );
1790                 return $title->getFullUrl();
1791         }
1792
1793         /**
1794          * Mark the e-mail address confirmed and save.
1795          */
1796         function confirmEmail() {
1797                 $this->loadFromDatabase();
1798                 $this->mEmailAuthenticated = wfTimestampNow();
1799                 $this->saveSettings();
1800                 return true;
1801         }
1802
1803         /**
1804          * Is this user allowed to send e-mails within limits of current
1805          * site configuration?
1806          * @return bool
1807          */
1808         function canSendEmail() {
1809                 return $this->isEmailConfirmed();
1810         }
1811
1812         /**
1813          * Is this user allowed to receive e-mails within limits of current
1814          * site configuration?
1815          * @return bool
1816          */
1817         function canReceiveEmail() {
1818                 return $this->canSendEmail() && !$this->getOption( 'disablemail' );
1819         }
1820
1821         /**
1822          * Is this user's e-mail address valid-looking and confirmed within
1823          * limits of the current site configuration?
1824          *
1825          * If $wgEmailAuthentication is on, this may require the user to have
1826          * confirmed their address by returning a code or using a password
1827          * sent to the address from the wiki.
1828          *
1829          * @return bool
1830          */
1831         function isEmailConfirmed() {
1832                 global $wgEmailAuthentication;
1833                 $this->loadFromDatabase();
1834                 if( $this->isAnon() )
1835                         return false;
1836                 if( !$this->isValidEmailAddr( $this->mEmail ) )
1837                         return false;
1838                 if( $wgEmailAuthentication && !$this->getEmailAuthenticationTimestamp() )
1839                         return false;
1840                 return true;
1841         }
1842
1843         /**
1844          * @param array $groups list of groups
1845          * @return array list of permission key names for given groups combined
1846          * @static
1847          */
1848         function getGroupPermissions( $groups ) {
1849                 global $wgGroupPermissions;
1850                 $rights = array();
1851                 foreach( $groups as $group ) {
1852                         if( isset( $wgGroupPermissions[$group] ) ) {
1853                                 $rights = array_merge( $rights,
1854                                         array_keys( array_filter( $wgGroupPermissions[$group] ) ) );
1855                         }
1856                 }
1857                 return $rights;
1858         }
1859
1860         /**
1861          * @param string $group key name
1862          * @return string localized descriptive name, if provided
1863          * @static
1864          */
1865         function getGroupName( $group ) {
1866                 $key = "group-$group-name";
1867                 $name = wfMsg( $key );
1868                 if( $name == '' || $name == "&lt;$key&gt;" ) {
1869                         return $group;
1870                 } else {
1871                         return $name;
1872                 }
1873         }
1874
1875         /**
1876          * Return the set of defined explicit groups.
1877          * The * and 'user' groups are not included.
1878          * @return array
1879          * @static
1880          */
1881         function getAllGroups() {
1882                 global $wgGroupPermissions;
1883                 return array_diff(
1884                         array_keys( $wgGroupPermissions ),
1885                         array( '*', 'user', 'autoconfirmed' ) );
1886         }
1887 }
1888
1889 ?>