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 /**
  17  *
  18  * @package MediaWiki
  19  */
  20 class User {
  21         /**#@+
  22          * @access private
  23          */
  24         var $mId, $mName, $mPassword, $mEmail, $mNewtalk;
  25         var $mEmailAuthenticated;
  26         var $mRights, $mOptions;
  27         var $mDataLoaded, $mNewpassword;
  28         var $mSkin;
  29         var $mBlockedby, $mBlockreason;
  30         var $mTouched;
  31         var $mToken;
  32         var $mRealName;
  33         var $mHash;
  34         var $mGroups;
  35
  36         /** Construct using User:loadDefaults() */
  37         function User() {
  38                 $this->loadDefaults();
  39         }
  40
  41         /**
  42          * Static factory method
  43          * @param string $name Username, validated by Title:newFromText()
  44          * @return User
  45          * @static
  46          */
  47         function newFromName( $name ) {
  48                 $u = new User();
  49
  50                 # Clean up name according to title rules
  51
  52                 $t = Title::newFromText( $name );
  53                 if( is_null( $t ) ) {
  54                         return NULL;
  55                 } else {
  56                         $u->setName( $t->getText() );
  57                         $u->setId( $u->idFromName( $t->getText() ) );
  58                         return $u;
  59                 }
  60         }
  61
  62         /**
  63          * Factory method to fetch whichever use has a given email confirmation code.
  64          * This code is generated when an account is created or its e-mail address
  65          * has changed.
  66          *
  67          * If the code is invalid or has expired, returns NULL.
  68          *
  69          * @param string $code
  70          * @return User
  71          * @static
  72          */
  73         function newFromConfirmationCode( $code ) {
  74                 $dbr =& wfGetDB( DB_SLAVE );
  75                 $name = $dbr->selectField( 'user', 'user_name', array(
  76                         'user_email_token' => md5( $code ),
  77                         'user_email_token_expires > ' . $dbr->addQuotes( $dbr->timestamp() ),
  78                         ) );
  79                 if( is_string( $name ) ) {
  80                         return User::newFromName( $name );
  81                 } else {
  82                         return null;
  83                 }
  84         }
  85
  86         /**
  87          * Serialze sleep function, for better cache efficiency and avoidance of
  88          * silly "incomplete type" errors when skins are cached
  89          */
  90         function __sleep() {
  91                 return array( 'mId', 'mName', 'mPassword', 'mEmail', 'mNewtalk',
  92                         'mEmailAuthenticated', 'mRights', 'mOptions', 'mDataLoaded',
  93                         'mNewpassword', 'mBlockedby', 'mBlockreason', 'mTouched',
  94                         'mToken', 'mRealName', 'mHash', 'mGroups' );
  95         }
  96
  97         /**
  98          * Get username given an id.
  99          * @param integer $id Database user id
 100          * @return string Nickname of a user
 101          * @static
 102          */
 103         function whoIs( $id )   {
 104                 $dbr =& wfGetDB( DB_SLAVE );
 105                 return $dbr->selectField( 'user', 'user_name', array( 'user_id' => $id ) );
 106         }
 107
 108         /**
 109          * Get real username given an id.
 110          * @param integer $id Database user id
 111          * @return string Realname of a user
 112          * @static
 113          */
 114         function whoIsReal( $id )       {
 115                 $dbr =& wfGetDB( DB_SLAVE );
 116                 return $dbr->selectField( 'user', 'user_real_name', array( 'user_id' => $id ) );
 117         }
 118
 119         /**
 120          * Get database id given a user name
 121          * @param string $name Nickname of a user
 122          * @return integer|null Database user id (null: if non existent
 123          * @static
 124          */
 125         function idFromName( $name ) {
 126                 $fname = "User::idFromName";
 127
 128                 $nt = Title::newFromText( $name );
 129                 if( is_null( $nt ) ) {
 130                         # Illegal name
 131                         return null;
 132                 }
 133                 $dbr =& wfGetDB( DB_SLAVE );
 134                 $s = $dbr->selectRow( 'user', array( 'user_id' ), array( 'user_name' => $nt->getText() ), $fname );
 135
 136                 if ( $s === false ) {
 137                         return 0;
 138                 } else {
 139                         return $s->user_id;
 140                 }
 141         }
 142
 143         /**
 144          * does the string match an anonymous IPv4 address?
 145          *
 146          * @static
 147          * @param string $name Nickname of a user
 148          * @return bool
 149          */
 150         function isIP( $name ) {
 151                 return preg_match("/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/",$name);
 152                 /*return preg_match("/^
 153                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 154                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 155                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))\.
 156                         (?:[01]?\d{1,2}|2(:?[0-4]\d|5[0-5]))
 157                 $/x", $name);*/
 158         }
 159
 160         /**
 161          * does the string match roughly an email address ?
 162          *
 163          * @bug 959
 164          *
 165          * @param string $addr email address
 166          * @static
 167          * @return bool
 168          */
 169         function isValidEmailAddr ( $addr ) {
 170                 # There used to be a regular expression here, it got removed because it
 171                 # rejected valid addresses.
 172                 return ( trim( $addr ) != '' ) &&
 173                         (false !== strpos( $addr, '@' ) );
 174         }
 175
 176         /**
 177          * probably return a random password
 178          * @return string probably a random password
 179          * @static
 180          * @todo Check what is doing really [AV]
 181          */
 182         function randomPassword() {
 183                 $pwchars = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz';
 184                 $l = strlen( $pwchars ) - 1;
 185
 186                 $np = $pwchars{mt_rand( 0, $l )} . $pwchars{mt_rand( 0, $l )} .
 187                   $pwchars{mt_rand( 0, $l )} . chr( mt_rand(48, 57) ) .
 188                   $pwchars{mt_rand( 0, $l )} . $pwchars{mt_rand( 0, $l )} .
 189                   $pwchars{mt_rand( 0, $l )};
 190                 return $np;
 191         }
 192
 193         /**
 194          * Set properties to default
 195          * Used at construction. It will load per language default settings only
 196          * if we have an available language object.
 197          */
 198         function loadDefaults() {
 199                 static $n=0;
 200                 $n++;
 201                 $fname = 'User::loadDefaults' . $n;
 202                 wfProfileIn( $fname );
 203
 204                 global $wgContLang, $wgIP, $wgDBname;
 205                 global $wgNamespacesToBeSearchedDefault;
 206
 207                 $this->mId = 0;
 208                 $this->mNewtalk = -1;
 209                 $this->mName = $wgIP;
 210                 $this->mRealName = $this->mEmail = '';
 211                 $this->mEmailAuthenticated = null;
 212                 $this->mPassword = $this->mNewpassword = '';
 213                 $this->mRights = array();
 214                 $this->mGroups = array();
 215                 $this->mOptions = User::getDefaultOptions();
 216
 217                 foreach( $wgNamespacesToBeSearchedDefault as $nsnum => $val ) {
 218                         $this->mOptions['searchNs'.$nsnum] = $val;
 219                 }
 220                 unset( $this->mSkin );
 221                 $this->mDataLoaded = false;
 222                 $this->mBlockedby = -1; # Unset
 223                 $this->setToken(); # Random
 224                 $this->mHash = false;
 225
 226                 if ( isset( $_COOKIE[$wgDBname.'LoggedOut'] ) ) {
 227                         $this->mTouched = wfTimestamp( TS_MW, $_COOKIE[$wgDBname.'LoggedOut'] );
 228                 }
 229                 else {
 230                         $this->mTouched = '0'; # Allow any pages to be cached
 231                 }
 232
 233                 wfProfileOut( $fname );
 234         }
 235
 236         /**
 237          * Combine the language default options with any site-specific options
 238          * and add the default language variants.
 239          *
 240          * @return array
 241          * @static
 242          * @access private
 243          */
 244         function getDefaultOptions() {
 245                 /**
 246                  * Site defaults will override the global/language defaults
 247                  */
 248                 global $wgContLang, $wgDefaultUserOptions;
 249                 $defOpt = $wgDefaultUserOptions + $wgContLang->getDefaultUserOptions();
 250
 251                 /**
 252                  * default language setting
 253                  */
 254                 $variant = $wgContLang->getPreferredVariant();
 255                 $defOpt['variant'] = $variant;
 256                 $defOpt['language'] = $variant;
 257
 258                 return $defOpt;
 259         }
 260
 261         /**
 262          * Get a given default option value.
 263          *
 264          * @param string $opt
 265          * @return string
 266          * @static
 267          * @access public
 268          */
 269         function getDefaultOption( $opt ) {
 270                 $defOpts = User::getDefaultOptions();
 271                 if( isset( $defOpts[$opt] ) ) {
 272                         return $defOpts[$opt];
 273                 } else {
 274                         return '';
 275                 }
 276         }
 277
 278         /**
 279          * Get blocking information
 280          * @access private
 281          * @param bool $bFromSlave Specify whether to check slave or master. To improve performance,
 282          *  non-critical checks are done against slaves. Check when actually saving should be done against
 283          *  master.
 284          *
 285          * Note that even if $bFromSlave is false, the check is done first against slave, then master.
 286          * The logic is that if blocked on slave, we'll assume it's either blocked on master or
 287          * just slightly outta sync and soon corrected - safer to block slightly more that less.
 288          * And it's cheaper to check slave first, then master if needed, than master always.
 289          */
 290         function getBlockedStatus( $bFromSlave = true ) {
 291                 global $wgIP, $wgBlockCache, $wgProxyList, $wgEnableSorbs, $wgProxyWhitelist;
 292
 293                 if ( -1 != $this->mBlockedby ) { return; }
 294
 295                 $this->mBlockedby = 0;
 296
 297                 # User blocking
 298                 if ( $this->mId ) {
 299                         $block = new Block();
 300                         $block->forUpdate( $bFromSlave );
 301                         if ( $block->load( $wgIP , $this->mId ) ) {
 302                                 $this->mBlockedby = $block->mBy;
 303                                 $this->mBlockreason = $block->mReason;
 304                                 $this->spreadBlock();
 305                         }
 306                 }
 307
 308                 # IP/range blocking
 309                 if ( !$this->mBlockedby ) {
 310                         # Check first against slave, and optionally from master.
 311                         $block = $wgBlockCache->get( $wgIP, true );
 312                         if ( !$block && !$bFromSlave )
 313                                 {
 314                                 # Not blocked: check against master, to make sure.
 315                                 $wgBlockCache->clearLocal( );
 316                                 $block = $wgBlockCache->get( $wgIP, false );
 317                                 }
 318                         if ( $block !== false ) {
 319                                 $this->mBlockedby = $block->mBy;
 320                                 $this->mBlockreason = $block->mReason;
 321                         }
 322                 }
 323
 324                 # Proxy blocking
 325                 if ( !$this->isSysop() && !in_array( $wgIP, $wgProxyWhitelist ) ) {
 326
 327                         # Local list
 328                         if ( array_key_exists( $wgIP, $wgProxyList ) ) {
 329                                 $this->mBlockedby = wfMsg( 'proxyblocker' );
 330                                 $this->mBlockreason = wfMsg( 'proxyblockreason' );
 331                         }
 332
 333                         # DNSBL
 334                         if ( !$this->mBlockedby && $wgEnableSorbs && !$this->getID() ) {
 335                                 if ( $this->inSorbsBlacklist( $wgIP ) ) {
 336                                         $this->mBlockedby = wfMsg( 'sorbs' );
 337                                         $this->mBlockreason = wfMsg( 'sorbsreason' );
 338                                 }
 339                         }
 340                 }
 341         }
 342
 343         function inSorbsBlacklist( $ip ) {
 344                 global $wgEnableSorbs;
 345                 return $wgEnableSorbs &&
 346                         $this->inDnsBlacklist( $ip, 'http.dnsbl.sorbs.net.' );
 347         }
 348
 349         function inOpmBlacklist( $ip ) {
 350                 global $wgEnableOpm;
 351                 return $wgEnableOpm &&
 352                         $this->inDnsBlacklist( $ip, 'opm.blitzed.org.' );
 353         }
 354
 355         function inDnsBlacklist( $ip, $base ) {
 356                 $fname = 'User::inDnsBlacklist';
 357                 wfProfileIn( $fname );
 358
 359                 $found = false;
 360                 $host = '';
 361
 362                 if ( preg_match( '/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/', $ip, $m ) ) {
 363                         # Make hostname
 364                         for ( $i=4; $i>=1; $i-- ) {
 365                                 $host .= $m[$i] . '.';
 366                         }
 367                         $host .= $base;
 368
 369                         # Send query
 370                         $ipList = gethostbynamel( $host );
 371
 372                         if ( $ipList ) {
 373                                 wfDebug( "Hostname $host is {$ipList[0]}, it's a proxy says $base!\n" );
 374                                 $found = true;
 375                         } else {
 376                                 wfDebug( "Requested $host, not found in $base.\n" );
 377                         }
 378                 }
 379
 380                 wfProfileOut( $fname );
 381                 return $found;
 382         }
 383
 384         /**
 385          * Primitive rate limits: enforce maximum actions per time period
 386          * to put a brake on flooding.
 387          *
 388          * Note: when using a shared cache like memcached, IP-address
 389          * last-hit counters will be shared across wikis.
 390          *
 391          * @return bool true if a rate limiter was tripped
 392          * @access public
 393          */
 394         function pingLimiter( $action='edit' ) {
 395                 global $wgRateLimits;
 396                 if( !isset( $wgRateLimits[$action] ) ) {
 397                         return false;
 398                 }
 399                 if( $this->isAllowed( 'delete' ) ) {
 400                         // goddam cabal
 401                         return false;
 402                 }
 403
 404                 global $wgMemc, $wgIP, $wgDBname, $wgRateLimitLog;
 405                 $fname = 'User::pingLimiter';
 406                 $limits = $wgRateLimits[$action];
 407                 $keys = array();
 408                 $id = $this->getId();
 409
 410                 if( isset( $limits['anon'] ) && $id == 0 ) {
 411                         $keys["$wgDBname:limiter:$action:anon"] = $limits['anon'];
 412                 }
 413
 414                 if( isset( $limits['user'] ) && $id != 0 ) {
 415                         $keys["$wgDBname:limiter:$action:user:$id"] = $limits['user'];
 416                 }
 417                 if( $this->isNewbie() ) {
 418                         if( isset( $limits['newbie'] ) && $id != 0 ) {
 419                                 $keys["$wgDBname:limiter:$action:user:$id"] = $limits['newbie'];
 420                         }
 421                         if( isset( $limits['ip'] ) ) {
 422                                 $keys["mediawiki:limiter:$action:ip:$wgIP"] = $limits['ip'];
 423                         }
 424                         if( isset( $limits['subnet'] ) && preg_match( '/^(\d+\.\d+\.\d+)\.\d+$/', $wgIP, $matches ) ) {
 425                                 $subnet = $matches[1];
 426                                 $keys["mediawiki:limiter:$action:subnet:$subnet"] = $limits['subnet'];
 427                         }
 428                 }
 429
 430                 $triggered = false;
 431                 foreach( $keys as $key => $limit ) {
 432                         list( $max, $period ) = $limit;
 433                         $summary = "(limit $max in {$period}s)";
 434                         $count = $wgMemc->get( $key );
 435                         if( $count ) {
 436                                 if( $count > $max ) {
 437                                         wfDebug( "$fname: tripped! $key at $count $summary\n" );
 438                                         if( $wgRateLimitLog ) {
 439                                                 @error_log( wfTimestamp( TS_MW ) . ' ' . $wgDBname . ': ' . $this->getName() . " tripped $key at $count $summary\n", 3, $wgRateLimitLog );
 440                                         }
 441                                         $triggered = true;
 442                                 } else {
 443                                         wfDebug( "$fname: ok. $key at $count $summary\n" );
 444                                 }
 445                         } else {
 446                                 wfDebug( "$fname: adding record for $key $summary\n" );
 447                                 $wgMemc->add( $key, 1, IntVal( $period ) );
 448                         }
 449                         $wgMemc->incr( $key );
 450                 }
 451
 452                 return $triggered;
 453         }
 454
 455         /**
 456          * Check if user is blocked
 457          * @return bool True if blocked, false otherwise
 458          */
 459         function isBlocked( $bFromSlave = false ) {
 460                 $this->getBlockedStatus( $bFromSlave );
 461                 return $this->mBlockedby !== 0;
 462         }
 463
 464         /**
 465          * Get name of blocker
 466          * @return string name of blocker
 467          */
 468         function blockedBy() {
 469                 $this->getBlockedStatus();
 470                 return $this->mBlockedby;
 471         }
 472
 473         /**
 474          * Get blocking reason
 475          * @return string Blocking reason
 476          */
 477         function blockedFor() {
 478                 $this->getBlockedStatus();
 479                 return $this->mBlockreason;
 480         }
 481
 482         /**
 483          * Initialise php session
 484          */
 485         function SetupSession() {
 486                 global $wgSessionsInMemcached, $wgCookiePath, $wgCookieDomain;
 487                 if( $wgSessionsInMemcached ) {
 488                         require_once( 'MemcachedSessions.php' );
 489                 } elseif( 'files' != ini_get( 'session.save_handler' ) ) {
 490                         # If it's left on 'user' or another setting from another
 491                         # application, it will end up failing. Try to recover.
 492                         ini_set ( 'session.save_handler', 'files' );
 493                 }
 494                 session_set_cookie_params( 0, $wgCookiePath, $wgCookieDomain );
 495                 session_cache_limiter( 'private, must-revalidate' );
 496                 @session_start();
 497         }
 498
 499         /**
 500          * Read datas from session
 501          * @static
 502          */
 503         function loadFromSession() {
 504                 global $wgMemc, $wgDBname;
 505
 506                 if ( isset( $_SESSION['wsUserID'] ) ) {
 507                         if ( 0 != $_SESSION['wsUserID'] ) {
 508                                 $sId = $_SESSION['wsUserID'];
 509                         } else {
 510                                 return new User();
 511                         }
 512                 } else if ( isset( $_COOKIE["{$wgDBname}UserID"] ) ) {
 513                         $sId = IntVal( $_COOKIE["{$wgDBname}UserID"] );
 514                         $_SESSION['wsUserID'] = $sId;
 515                 } else {
 516                         return new User();
 517                 }
 518                 if ( isset( $_SESSION['wsUserName'] ) ) {
 519                         $sName = $_SESSION['wsUserName'];
 520                 } else if ( isset( $_COOKIE["{$wgDBname}UserName"] ) ) {
 521                         $sName = $_COOKIE["{$wgDBname}UserName"];
 522                         $_SESSION['wsUserName'] = $sName;
 523                 } else {
 524                         return new User();
 525                 }
 526
 527                 $passwordCorrect = FALSE;
 528                 $user = $wgMemc->get( $key = "$wgDBname:user:id:$sId" );
 529                 if($makenew = !$user) {
 530                         wfDebug( "User::loadFromSession() unable to load from memcached\n" );
 531                         $user = new User();
 532                         $user->mId = $sId;
 533                         $user->loadFromDatabase();
 534                 } else {
 535                         wfDebug( "User::loadFromSession() got from cache!\n" );
 536                 }
 537
 538                 if ( isset( $_SESSION['wsToken'] ) ) {
 539                         $passwordCorrect = $_SESSION['wsToken'] == $user->mToken;
 540                 } else if ( isset( $_COOKIE["{$wgDBname}Token"] ) ) {
 541                         $passwordCorrect = $user->mToken == $_COOKIE["{$wgDBname}Token"];
 542                 } else {
 543                         return new User(); # Can't log in from session
 544                 }
 545
 546                 if ( ( $sName == $user->mName ) && $passwordCorrect ) {
 547                         if($makenew) {
 548                                 if($wgMemc->set( $key, $user ))
 549                                         wfDebug( "User::loadFromSession() successfully saved user\n" );
 550                                 else
 551                                         wfDebug( "User::loadFromSession() unable to save to memcached\n" );
 552                         }
 553                         return $user;
 554                 }
 555                 return new User(); # Can't log in from session
 556         }
 557
 558         /**
 559          * Load a user from the database
 560          */
 561         function loadFromDatabase() {
 562                 global $wgCommandLineMode;
 563                 $fname = "User::loadFromDatabase";
 564
 565                 # Counter-intuitive, breaks various things, use User::setLoaded() if you want to suppress
 566                 # loading in a command line script, don't assume all command line scripts need it like this
 567                 #if ( $this->mDataLoaded || $wgCommandLineMode ) {
 568                 if ( $this->mDataLoaded ) {
 569                         return;
 570                 }
 571
 572                 # Paranoia
 573                 $this->mId = IntVal( $this->mId );
 574
 575                 /** Anonymous user */
 576                 if( !$this->mId ) {
 577                         /** Get rights */
 578                         $this->mRights = $this->getGroupPermissions( array( '*' ) );
 579                         $this->mDataLoaded = true;
 580                         return;
 581                 } # the following stuff is for non-anonymous users only
 582
 583                 $dbr =& wfGetDB( DB_SLAVE );
 584                 $s = $dbr->selectRow( 'user', array( 'user_name','user_password','user_newpassword','user_email',
 585                   'user_email_authenticated',
 586                   'user_real_name','user_options','user_touched', 'user_token' ),
 587                   array( 'user_id' => $this->mId ), $fname );
 588
 589                 if ( $s !== false ) {
 590                         $this->mName = $s->user_name;
 591                         $this->mEmail = $s->user_email;
 592                         $this->mEmailAuthenticated = wfTimestampOrNull( TS_MW, $s->user_email_authenticated );
 593                         $this->mRealName = $s->user_real_name;
 594                         $this->mPassword = $s->user_password;
 595                         $this->mNewpassword = $s->user_newpassword;
 596                         $this->decodeOptions( $s->user_options );
 597                         $this->mTouched = wfTimestamp(TS_MW,$s->user_touched);
 598                         $this->mToken = $s->user_token;
 599
 600                         $res = $dbr->select( 'user_groups',
 601                                 array( 'ug_group' ),
 602                                 array( 'ug_user' => $this->mId ),
 603                                 $fname );
 604                         $this->mGroups = array();
 605                         while( $row = $dbr->fetchObject( $res ) ) {
 606                                 $this->mGroups[] = $row->ug_group;
 607                         }
 608                         $effectiveGroups = array_merge( array( '*', 'user' ), $this->mGroups );
 609                         $this->mRights = $this->getGroupPermissions( $effectiveGroups );
 610                 }
 611
 612                 $this->mDataLoaded = true;
 613         }
 614
 615         function getID() { return $this->mId; }
 616         function setID( $v ) {
 617                 $this->mId = $v;
 618                 $this->mDataLoaded = false;
 619         }
 620
 621         function getName() {
 622                 $this->loadFromDatabase();
 623                 return $this->mName;
 624         }
 625
 626         function setName( $str ) {
 627                 $this->loadFromDatabase();
 628                 $this->mName = $str;
 629         }
 630
 631
 632         /**
 633          * Return the title dbkey form of the name, for eg user pages.
 634          * @return string
 635          * @access public
 636          */
 637         function getTitleKey() {
 638                 return str_replace( ' ', '_', $this->getName() );
 639         }
 640
 641         function getNewtalk() {
 642                 global $wgUseEnotif;
 643                 $fname = 'User::getNewtalk';
 644                 $this->loadFromDatabase();
 645
 646                 # Load the newtalk status if it is unloaded (mNewtalk=-1)
 647                 if( $this->mNewtalk == -1 ) {
 648                         $this->mNewtalk = 0; # reset talk page status
 649
 650                         # Check memcached separately for anons, who have no
 651                         # entire User object stored in there.
 652                         if( !$this->mId ) {
 653                                 global $wgDBname, $wgMemc;
 654                                 $key = "$wgDBname:newtalk:ip:{$this->mName}";
 655                                 $newtalk = $wgMemc->get( $key );
 656                                 if( is_integer( $newtalk ) ) {
 657                                         $this->mNewtalk = $newtalk ? 1 : 0;
 658                                         return (bool)$this->mNewtalk;
 659                                 }
 660                         }
 661
 662                         $dbr =& wfGetDB( DB_SLAVE );
 663                         if ( $wgUseEnotif ) {
 664                                 $res = $dbr->select( 'watchlist',
 665                                         array( 'wl_user' ),
 666                                         array( 'wl_title'     => $this->getTitleKey(),
 667                                                    'wl_namespace' => NS_USER_TALK,
 668                                                    'wl_user'      => $this->mId,
 669                                                    'wl_notificationtimestamp != 0' ),
 670                                         'User::getNewtalk' );
 671                                 if( $dbr->numRows($res) > 0 ) {
 672                                         $this->mNewtalk = 1;
 673                                 }
 674                                 $dbr->freeResult( $res );
 675                         } elseif ( $this->mId ) {
 676                                 $res = $dbr->select( 'user_newtalk', 1, array( 'user_id' => $this->mId ), $fname );
 677
 678                                 if ( $dbr->numRows($res)>0 ) {
 679                                         $this->mNewtalk= 1;
 680                                 }
 681                                 $dbr->freeResult( $res );
 682                         } else {
 683                                 $res = $dbr->select( 'user_newtalk', 1, array( 'user_ip' => $this->mName ), $fname );
 684                                 $this->mNewtalk = $dbr->numRows( $res ) > 0 ? 1 : 0;
 685                                 $dbr->freeResult( $res );
 686                         }
 687
 688                         if( !$this->mId ) {
 689                                 $wgMemc->set( $key, $this->mNewtalk, time() ); // + 1800 );
 690                         }
 691                 }
 692
 693                 return ( 0 != $this->mNewtalk );
 694         }
 695
 696         function setNewtalk( $val ) {
 697                 $this->loadFromDatabase();
 698                 $this->mNewtalk = $val;
 699                 $this->invalidateCache();
 700         }
 701
 702         function invalidateCache() {
 703                 global $wgClockSkewFudge;
 704                 $this->loadFromDatabase();
 705                 $this->mTouched = wfTimestamp(TS_MW, time() + $wgClockSkewFudge );
 706                 # Don't forget to save the options after this or
 707                 # it won't take effect!
 708         }
 709
 710         function validateCache( $timestamp ) {
 711                 $this->loadFromDatabase();
 712                 return ($timestamp >= $this->mTouched);
 713         }
 714
 715         /**
 716          * Salt a password.
 717          * Will only be salted if $wgPasswordSalt is true
 718          * @param string Password.
 719          * @return string Salted password or clear password.
 720          */
 721         function addSalt( $p ) {
 722                 global $wgPasswordSalt;
 723                 if($wgPasswordSalt)
 724                         return md5( "{$this->mId}-{$p}" );
 725                 else
 726                         return $p;
 727         }
 728
 729         /**
 730          * Encrypt a password.
 731          * It can eventuall salt a password @see User::addSalt()
 732          * @param string $p clear Password.
 733          * @param string Encrypted password.
 734          */
 735         function encryptPassword( $p ) {
 736                 return $this->addSalt( md5( $p ) );
 737         }
 738
 739         # Set the password and reset the random token
 740         function setPassword( $str ) {
 741                 $this->loadFromDatabase();
 742                 $this->setToken();
 743                 $this->mPassword = $this->encryptPassword( $str );
 744                 $this->mNewpassword = '';
 745         }
 746
 747         # Set the random token (used for persistent authentication)
 748         function setToken( $token = false ) {
 749                 global $wgSecretKey, $wgProxyKey, $wgDBname;
 750                 if ( !$token ) {
 751                         if ( $wgSecretKey ) {
 752                                 $key = $wgSecretKey;
 753                         } elseif ( $wgProxyKey ) {
 754                                 $key = $wgProxyKey;
 755                         } else {
 756                                 $key = microtime();
 757                         }
 758                         $this->mToken = md5( $key . mt_rand( 0, 0x7fffffff ) . $wgDBname . $this->mId );
 759                 } else {
 760                         $this->mToken = $token;
 761                 }
 762         }
 763
 764
 765         function setCookiePassword( $str ) {
 766                 $this->loadFromDatabase();
 767                 $this->mCookiePassword = md5( $str );
 768         }
 769
 770         function setNewpassword( $str ) {
 771                 $this->loadFromDatabase();
 772                 $this->mNewpassword = $this->encryptPassword( $str );
 773         }
 774
 775         function getEmail() {
 776                 $this->loadFromDatabase();
 777                 return $this->mEmail;
 778         }
 779
 780         function getEmailAuthenticationTimestamp() {
 781                 $this->loadFromDatabase();
 782                 return $this->mEmailAuthenticated;
 783         }
 784
 785         function setEmail( $str ) {
 786                 $this->loadFromDatabase();
 787                 $this->mEmail = $str;
 788         }
 789
 790         function getRealName() {
 791                 $this->loadFromDatabase();
 792                 return $this->mRealName;
 793         }
 794
 795         function setRealName( $str ) {
 796                 $this->loadFromDatabase();
 797                 $this->mRealName = $str;
 798         }
 799
 800         function getOption( $oname ) {
 801                 $this->loadFromDatabase();
 802                 if ( array_key_exists( $oname, $this->mOptions ) ) {
 803                         return trim( $this->mOptions[$oname] );
 804                 } else {
 805                         return '';
 806                 }
 807         }
 808
 809         function setOption( $oname, $val ) {
 810                 $this->loadFromDatabase();
 811                 if ( $oname == 'skin' ) {
 812                         # Clear cached skin, so the new one displays immediately in Special:Preferences
 813                         unset( $this->mSkin );
 814                 }
 815                 $this->mOptions[$oname] = $val;
 816                 $this->invalidateCache();
 817         }
 818
 819         function getRights() {
 820                 $this->loadFromDatabase();
 821                 return $this->mRights;
 822         }
 823
 824         /**
 825          * Get the list of explicit group memberships this user has.
 826          * The implicit * and user groups are not included.
 827          * @return array of strings
 828          */
 829         function getGroups() {
 830                 $this->loadFromDatabase();
 831                 return $this->mGroups;
 832         }
 833
 834         /**
 835          * Get the list of implicit group memberships this user has.
 836          * This includes all explicit groups, plus 'user' if logged in
 837          * and '*' for all accounts.
 838          * @return array of strings
 839          */
 840         function getEffectiveGroups() {
 841                 $base = array( '*' );
 842                 if( $this->isLoggedIn() ) {
 843                         $base[] = 'user';
 844                 }
 845                 return array_merge( $base, $this->getGroups() );
 846         }
 847
 848         /**
 849          * Remove the user from the given group.
 850          * This takes immediate effect.
 851          * @string $group
 852          */
 853         function addGroup( $group ) {
 854                 $dbw =& wfGetDB( DB_MASTER );
 855                 $dbw->insert( 'user_groups',
 856                         array(
 857                                 'ug_user'  => $this->getID(),
 858                                 'ug_group' => $group,
 859                         ),
 860                         'User::addGroup',
 861                         array( 'IGNORE' ) );
 862
 863                 $this->mGroups = array_merge( $this->mGroups, array( $group ) );
 864                 $this->mRights = User::getGroupPermissions( $this->getEffectiveGroups() );
 865
 866                 $this->invalidateCache();
 867                 $this->saveSettings();
 868         }
 869
 870         /**
 871          * Remove the user from the given group.
 872          * This takes immediate effect.
 873          * @string $group
 874          */
 875         function removeGroup( $group ) {
 876                 $dbw =& wfGetDB( DB_MASTER );
 877                 $dbw->delete( 'user_groups',
 878                         array(
 879                                 'ug_user'  => $this->getID(),
 880                                 'ug_group' => $group,
 881                         ),
 882                         'User::removeGroup' );
 883
 884                 $this->mGroups = array_diff( $this->mGroups, array( $group ) );
 885                 $this->mRights = User::getGroupPermissions( $this->getEffectiveGroups() );
 886
 887                 $this->invalidateCache();
 888                 $this->saveSettings();
 889         }
 890
 891
 892         /**
 893          * A more legible check for non-anonymousness.
 894          * Returns true if the user is not an anonymous visitor.
 895          *
 896          * @return bool
 897          */
 898         function isLoggedIn() {
 899                 return( $this->getID() != 0 );
 900         }
 901
 902         /**
 903          * A more legible check for anonymousness.
 904          * Returns true if the user is an anonymous visitor.
 905          *
 906          * @return bool
 907          */
 908         function isAnon() {
 909                 return !$this->isLoggedIn();
 910         }
 911
 912         /**
 913          * Check if a user is sysop
 914          * Die with backtrace. Use User:isAllowed() instead.
 915          * @deprecated
 916          */
 917         function isSysop() {
 918                 return $this->isAllowed( 'protect' );
 919         }
 920
 921         /** @deprecated */
 922         function isDeveloper() {
 923                 return $this->isAllowed( 'siteadmin' );
 924         }
 925
 926         /** @deprecated */
 927         function isBureaucrat() {
 928                 return $this->isAllowed( 'makesysop' );
 929         }
 930
 931         /**
 932          * Whether the user is a bot
 933          * @todo need to be migrated to the new user level management sytem
 934          */
 935         function isBot() {
 936                 $this->loadFromDatabase();
 937                 return in_array( 'bot', $this->mRights );
 938         }
 939
 940         /**
 941          * Check if user is allowed to access a feature / make an action
 942          * @param string $action Action to be checked (see $wgAvailableRights in Defines.php for possible actions).
 943          * @return boolean True: action is allowed, False: action should not be allowed
 944          */
 945         function isAllowed($action='') {
 946                 $this->loadFromDatabase();
 947                 return in_array( $action , $this->mRights );
 948         }
 949
 950         /**
 951          * Load a skin if it doesn't exist or return it
 952          * @todo FIXME : need to check the old failback system [AV]
 953          */
 954         function &getSkin() {
 955                 global $IP;
 956                 if ( ! isset( $this->mSkin ) ) {
 957                         $fname = 'User::getSkin';
 958                         wfProfileIn( $fname );
 959
 960                         # get all skin names available
 961                         $skinNames = Skin::getSkinNames();
 962
 963                         # get the user skin
 964                         $userSkin = $this->getOption( 'skin' );
 965                         if ( $userSkin == '' ) { $userSkin = 'standard'; }
 966
 967                         if ( !isset( $skinNames[$userSkin] ) ) {
 968                                 # in case the user skin could not be found find a replacement
 969                                 $fallback = array(
 970                                         0 => 'Standard',
 971                                         1 => 'Nostalgia',
 972                                         2 => 'CologneBlue');
 973                                 # if phptal is enabled we should have monobook skin that
 974                                 # superseed the good old SkinStandard.
 975                                 if ( isset( $skinNames['monobook'] ) ) {
 976                                         $fallback[0] = 'MonoBook';
 977                                 }
 978
 979                                 if(is_numeric($userSkin) && isset( $fallback[$userSkin]) ){
 980                                         $sn = $fallback[$userSkin];
 981                                 } else {
 982                                         $sn = 'Standard';
 983                                 }
 984                         } else {
 985                                 # The user skin is available
 986                                 $sn = $skinNames[$userSkin];
 987                         }
 988
 989                         # Grab the skin class and initialise it. Each skin checks for PHPTal
 990                         # and will not load if it's not enabled.
 991                         require_once( $IP.'/skins/'.$sn.'.php' );
 992
 993                         # Check if we got if not failback to default skin
 994                         $className = 'Skin'.$sn;
 995                         if( !class_exists( $className ) ) {
 996                                 # DO NOT die if the class isn't found. This breaks maintenance
 997                                 # scripts and can cause a user account to be unrecoverable
 998                                 # except by SQL manipulation if a previously valid skin name
 999                                 # is no longer valid.
1000                                 $className = 'SkinStandard';
1001                                 require_once( $IP.'/skins/Standard.php' );
1002                         }
1003                         $this->mSkin =& new $className;
1004                         wfProfileOut( $fname );
1005                 }
1006                 return $this->mSkin;
1007         }
1008
1009         /**#@+
1010          * @param string $title Article title to look at
1011          */
1012
1013         /**
1014          * Check watched status of an article
1015          * @return bool True if article is watched
1016          */
1017         function isWatched( $title ) {
1018                 $wl = WatchedItem::fromUserTitle( $this, $title );
1019                 return $wl->isWatched();
1020         }
1021
1022         /**
1023          * Watch an article
1024          */
1025         function addWatch( $title ) {
1026                 $wl = WatchedItem::fromUserTitle( $this, $title );
1027                 $wl->addWatch();
1028                 $this->invalidateCache();
1029         }
1030
1031         /**
1032          * Stop watching an article
1033          */
1034         function removeWatch( $title ) {
1035                 $wl = WatchedItem::fromUserTitle( $this, $title );
1036                 $wl->removeWatch();
1037                 $this->invalidateCache();
1038         }
1039
1040         /**
1041          * Clear the user's notification timestamp for the given title.
1042          * If e-notif e-mails are on, they will receive notification mails on
1043          * the next change of the page if it's watched etc.
1044          */
1045         function clearNotification( &$title ) {
1046                 global $wgUser, $wgUseEnotif;
1047
1048                 if ( !$wgUseEnotif ) {
1049                         return;
1050                 }
1051
1052                 $userid = $this->getID();
1053                 if ($userid==0) {
1054                         return;
1055                 }
1056
1057                 // Only update the timestamp if the page is being watched.
1058                 // The query to find out if it is watched is cached both in memcached and per-invocation,
1059                 // and when it does have to be executed, it can be on a slave
1060                 // If this is the user's newtalk page, we always update the timestamp
1061                 if ($title->getNamespace() == NS_USER_TALK &&
1062                         $title->getText() == $wgUser->getName())
1063                 {
1064                         $watched = true;
1065                 } elseif ( $this->getID() == $wgUser->getID() ) {
1066                         $watched = $title->userIsWatching();
1067                 } else {
1068                         $watched = true;
1069                 }
1070
1071                 // If the page is watched by the user (or may be watched), update the timestamp on any
1072                 // any matching rows
1073                 if ( $watched ) {
1074                         $dbw =& wfGetDB( DB_MASTER );
1075                         $success = $dbw->update( 'watchlist',
1076                                         array( /* SET */
1077                                                 'wl_notificationtimestamp' => 0
1078                                         ), array( /* WHERE */
1079                                                 'wl_title' => $title->getDBkey(),
1080                                                 'wl_namespace' => $title->getNamespace(),
1081                                                 'wl_user' => $this->getID()
1082                                         ), 'User::clearLastVisited'
1083                         );
1084                 }
1085         }
1086
1087         /**#@-*/
1088
1089         /**
1090          * Resets all of the given user's page-change notification timestamps.
1091          * If e-notif e-mails are on, they will receive notification mails on
1092          * the next change of any watched page.
1093          *
1094          * @param int $currentUser user ID number
1095          * @access public
1096          */
1097         function clearAllNotifications( $currentUser ) {
1098                 global $wgUseEnotif;
1099                 if ( !$wgUseEnotif ) {
1100                         return;
1101                 }
1102                 if( $currentUser != 0 )  {
1103
1104                         $dbw =& wfGetDB( DB_MASTER );
1105                         $success = $dbw->update( 'watchlist',
1106                                 array( /* SET */
1107                                         'wl_notificationtimestamp' => 0
1108                                 ), array( /* WHERE */
1109                                         'wl_user' => $currentUser
1110                                 ), 'UserMailer::clearAll'
1111                         );
1112
1113                 #       we also need to clear here the "you have new message" notification for the own user_talk page
1114                 #       This is cleared one page view later in Article::viewUpdates();
1115                 }
1116         }
1117
1118         /**
1119          * @access private
1120          * @return string Encoding options
1121          */
1122         function encodeOptions() {
1123                 $a = array();
1124                 foreach ( $this->mOptions as $oname => $oval ) {
1125                         array_push( $a, $oname.'='.$oval );
1126                 }
1127                 $s = implode( "\n", $a );
1128                 return $s;
1129         }
1130
1131         /**
1132          * @access private
1133          */
1134         function decodeOptions( $str ) {
1135                 $a = explode( "\n", $str );
1136                 foreach ( $a as $s ) {
1137                         if ( preg_match( "/^(.[^=]*)=(.*)$/", $s, $m ) ) {
1138                                 $this->mOptions[$m[1]] = $m[2];
1139                         }
1140                 }
1141         }
1142
1143         function setCookies() {
1144                 global $wgCookieExpiration, $wgCookiePath, $wgCookieDomain, $wgDBname;
1145                 if ( 0 == $this->mId ) return;
1146                 $this->loadFromDatabase();
1147                 $exp = time() + $wgCookieExpiration;
1148
1149                 $_SESSION['wsUserID'] = $this->mId;
1150                 setcookie( $wgDBname.'UserID', $this->mId, $exp, $wgCookiePath, $wgCookieDomain );
1151
1152                 $_SESSION['wsUserName'] = $this->mName;
1153                 setcookie( $wgDBname.'UserName', $this->mName, $exp, $wgCookiePath, $wgCookieDomain );
1154
1155                 $_SESSION['wsToken'] = $this->mToken;
1156                 if ( 1 == $this->getOption( 'rememberpassword' ) ) {
1157                         setcookie( $wgDBname.'Token', $this->mToken, $exp, $wgCookiePath, $wgCookieDomain );
1158                 } else {
1159                         setcookie( $wgDBname.'Token', '', time() - 3600 );
1160                 }
1161         }
1162
1163         /**
1164          * Logout user
1165          * It will clean the session cookie
1166          */
1167         function logout() {
1168                 global $wgCookiePath, $wgCookieDomain, $wgDBname, $wgIP;
1169                 $this->loadDefaults();
1170                 $this->setLoaded( true );
1171
1172                 $_SESSION['wsUserID'] = 0;
1173
1174                 setcookie( $wgDBname.'UserID', '', time() - 3600, $wgCookiePath, $wgCookieDomain );
1175                 setcookie( $wgDBname.'Token', '', time() - 3600, $wgCookiePath, $wgCookieDomain );
1176
1177                 # Remember when user logged out, to prevent seeing cached pages
1178                 setcookie( $wgDBname.'LoggedOut', wfTimestampNow(), time() + 86400, $wgCookiePath, $wgCookieDomain );
1179         }
1180
1181         /**
1182          * Save object settings into database
1183          */
1184         function saveSettings() {
1185                 global $wgMemc, $wgDBname, $wgUseEnotif;
1186                 $fname = 'User::saveSettings';
1187
1188                 if ( wfReadOnly() ) { return; }
1189                 $this->saveNewtalk();
1190                 if ( 0 == $this->mId ) { return; }
1191
1192                 $dbw =& wfGetDB( DB_MASTER );
1193                 $dbw->update( 'user',
1194                         array( /* SET */
1195                                 'user_name' => $this->mName,
1196                                 'user_password' => $this->mPassword,
1197                                 'user_newpassword' => $this->mNewpassword,
1198                                 'user_real_name' => $this->mRealName,
1199                                 'user_email' => $this->mEmail,
1200                                 'user_email_authenticated' => $dbw->timestampOrNull( $this->mEmailAuthenticated ),
1201                                 'user_options' => $this->encodeOptions(),
1202                                 'user_touched' => $dbw->timestamp($this->mTouched),
1203                                 'user_token' => $this->mToken
1204                         ), array( /* WHERE */
1205                                 'user_id' => $this->mId
1206                         ), $fname
1207                 );
1208                 $wgMemc->delete( "$wgDBname:user:id:$this->mId" );
1209         }
1210
1211         /**
1212          * Save value of new talk flag.
1213          */
1214         function saveNewtalk() {
1215                 global $wgDBname, $wgMemc, $wgUseEnotif;
1216
1217                 $fname = 'User::saveNewtalk';
1218
1219                 if ( wfReadOnly() ) { return ; }
1220                 $dbr =& wfGetDB( DB_SLAVE );
1221                 $dbw =& wfGetDB( DB_MASTER );
1222                 if ( $wgUseEnotif ) {
1223                         if ( ! $this->getNewtalk() ) {
1224                                 # Delete the watchlist entry for user_talk page X watched by user X
1225                                 $dbw->delete( 'watchlist',
1226                                         array( 'wl_user'      => $this->mId,
1227                                                    'wl_title'     => $this->getTitleKey(),
1228                                                    'wl_namespace' => NS_USER_TALK ),
1229                                         $fname );
1230                                 if ( $dbw->affectedRows() ) {
1231                                         $changed = true;
1232                                 }
1233                                 if( !$this->mId ) {
1234                                         # Anon users have a separate memcache space for newtalk
1235                                         # since they don't store their own info. Trim...
1236                                         $wgMemc->delete( "$wgDBname:newtalk:ip:{$this->mName}" );
1237                                 }
1238                         }
1239                 } else {
1240                         if ($this->getID() != 0) {
1241                                 $field = 'user_id';
1242                                 $value = $this->getID();
1243                                 $key = false;
1244                         } else {
1245                                 $field = 'user_ip';
1246                                 $value = $this->mName;
1247                                 $key = "$wgDBname:newtalk:ip:$this->mName";
1248                         }
1249
1250                         $dbr =& wfGetDB( DB_SLAVE );
1251                         $dbw =& wfGetDB( DB_MASTER );
1252
1253                         $res = $dbr->selectField('user_newtalk', $field,
1254                                                                          array($field => $value), $fname);
1255
1256                         $changed = true;
1257                         if ($res !== false && $this->mNewtalk == 0) {
1258                                 $dbw->delete('user_newtalk', array($field => $value), $fname);
1259                                 if ( $key ) {
1260                                         $wgMemc->set( $key, 0 );
1261                                 }
1262                         } else if ($res === false && $this->mNewtalk == 1) {
1263                                 $dbw->insert('user_newtalk', array($field => $value), $fname);
1264                                 if ( $key ) {
1265                                         $wgMemc->set( $key, 1 );
1266                                 }
1267                         } else {
1268                                 $changed = false;
1269                         }
1270                 }
1271
1272                 # Update user_touched, so that newtalk notifications in the client cache are invalidated
1273                 if ( $changed && $this->getID() ) {
1274                         $dbw->update('user',
1275                                 /*SET*/ array( 'user_touched' => $this->mTouched ),
1276                                 /*WHERE*/ array( 'user_id' => $this->getID() ),
1277                                 $fname);
1278                         $wgMemc->set( "$wgDBname:user:id:{$this->mId}", $this, 86400 );
1279                 }
1280         }
1281
1282         /**
1283          * Checks if a user with the given name exists, returns the ID
1284          */
1285         function idForName() {
1286                 $fname = 'User::idForName';
1287
1288                 $gotid = 0;
1289                 $s = trim( $this->mName );
1290                 if ( 0 == strcmp( '', $s ) ) return 0;
1291
1292                 $dbr =& wfGetDB( DB_SLAVE );
1293                 $id = $dbr->selectField( 'user', 'user_id', array( 'user_name' => $s ), $fname );
1294                 if ( $id === false ) {
1295                         $id = 0;
1296                 }
1297                 return $id;
1298         }
1299
1300         /**
1301          * Add user object to the database
1302          */
1303         function addToDatabase() {
1304                 $fname = 'User::addToDatabase';
1305                 $dbw =& wfGetDB( DB_MASTER );
1306                 $seqVal = $dbw->nextSequenceValue( 'user_user_id_seq' );
1307                 $dbw->insert( 'user',
1308                         array(
1309                                 'user_id' => $seqVal,
1310                                 'user_name' => $this->mName,
1311                                 'user_password' => $this->mPassword,
1312                                 'user_newpassword' => $this->mNewpassword,
1313                                 'user_email' => $this->mEmail,
1314                                 'user_email_authenticated' => $dbw->timestampOrNull( $this->mEmailAuthenticated ),
1315                                 'user_real_name' => $this->mRealName,
1316                                 'user_options' => $this->encodeOptions(),
1317                                 'user_token' => $this->mToken
1318                         ), $fname
1319                 );
1320                 $this->mId = $dbw->insertId();
1321         }
1322
1323         function spreadBlock() {
1324                 global $wgIP;
1325                 # If the (non-anonymous) user is blocked, this function will block any IP address
1326                 # that they successfully log on from.
1327                 $fname = 'User::spreadBlock';
1328
1329                 wfDebug( "User:spreadBlock()\n" );
1330                 if ( $this->mId == 0 ) {
1331                         return;
1332                 }
1333
1334                 $userblock = Block::newFromDB( '', $this->mId );
1335                 if ( !$userblock->isValid() ) {
1336                         return;
1337                 }
1338
1339                 # Check if this IP address is already blocked
1340                 $ipblock = Block::newFromDB( $wgIP );
1341                 if ( $ipblock->isValid() ) {
1342                         # Just update the timestamp
1343                         $ipblock->updateTimestamp();
1344                         return;
1345                 }
1346
1347                 # Make a new block object with the desired properties
1348                 wfDebug( "Autoblocking {$this->mName}@{$wgIP}\n" );
1349                 $ipblock->mAddress = $wgIP;
1350                 $ipblock->mUser = 0;
1351                 $ipblock->mBy = $userblock->mBy;
1352                 $ipblock->mReason = wfMsg( 'autoblocker', $this->getName(), $userblock->mReason );
1353                 $ipblock->mTimestamp = wfTimestampNow();
1354                 $ipblock->mAuto = 1;
1355                 # If the user is already blocked with an expiry date, we don't
1356                 # want to pile on top of that!
1357                 if($userblock->mExpiry) {
1358                         $ipblock->mExpiry = min ( $userblock->mExpiry, Block::getAutoblockExpiry( $ipblock->mTimestamp ));
1359                 } else {
1360                         $ipblock->mExpiry = Block::getAutoblockExpiry( $ipblock->mTimestamp );
1361                 }
1362
1363                 # Insert it
1364                 $ipblock->insert();
1365
1366         }
1367
1368         function getPageRenderingHash() {
1369                 global $wgContLang;
1370                 if( $this->mHash ){
1371                         return $this->mHash;
1372                 }
1373
1374                 // stubthreshold is only included below for completeness,
1375                 // it will always be 0 when this function is called by parsercache.
1376
1377                 $confstr =        $this->getOption( 'math' );
1378                 $confstr .= '!' . $this->getOption( 'stubthreshold' );
1379                 $confstr .= '!' . $this->getOption( 'editsection' );
1380                 $confstr .= '!' . $this->getOption( 'date' );
1381                 $confstr .= '!' . $this->getOption( 'numberheadings' );
1382                 $confstr .= '!' . $this->getOption( 'language' );
1383                 $confstr .= '!' . $this->getOption( 'thumbsize' );
1384                 // add in language specific options, if any
1385                 $extra = $wgContLang->getExtraHashOptions();
1386                 $confstr .= $extra;
1387
1388                 $this->mHash = $confstr;
1389                 return $confstr ;
1390         }
1391
1392         function isAllowedToCreateAccount() {
1393                 return $this->isAllowed( 'createaccount' );
1394         }
1395
1396         /**
1397          * Set mDataLoaded, return previous value
1398          * Use this to prevent DB access in command-line scripts or similar situations
1399          */
1400         function setLoaded( $loaded ) {
1401                 return wfSetVar( $this->mDataLoaded, $loaded );
1402         }
1403
1404         /**
1405          * Get this user's personal page title.
1406          *
1407          * @return Title
1408          * @access public
1409          */
1410         function getUserPage() {
1411                 return Title::makeTitle( NS_USER, $this->mName );
1412         }
1413
1414         /**
1415          * Get this user's talk page title.
1416          *
1417          * @return Title
1418          * @access public
1419          */
1420         function getTalkPage() {
1421                 $title = $this->getUserPage();
1422                 return $title->getTalkPage();
1423         }
1424
1425         /**
1426          * @static
1427          */
1428         function getMaxID() {
1429                 $dbr =& wfGetDB( DB_SLAVE );
1430                 return $dbr->selectField( 'user', 'max(user_id)', false );
1431         }
1432
1433         /**
1434          * Determine whether the user is a newbie. Newbies are either
1435          * anonymous IPs, or the 1% most recently created accounts.
1436          * Bots and sysops are excluded.
1437          * @return bool True if it is a newbie.
1438          */
1439         function isNewbie() {
1440                 return $this->isAnon() || $this->mId > User::getMaxID() * 0.99 && !$this->isAllowed( 'delete' ) && !$this->isBot();
1441         }
1442
1443         /**
1444          * Check to see if the given clear-text password is one of the accepted passwords
1445          * @param string $password User password.
1446          * @return bool True if the given password is correct otherwise False.
1447          */
1448         function checkPassword( $password ) {
1449                 global $wgAuth, $wgMinimalPasswordLength;
1450                 $this->loadFromDatabase();
1451
1452                 // Even though we stop people from creating passwords that
1453                 // are shorter than this, doesn't mean people wont be able
1454                 // to. Certain authentication plugins do NOT want to save
1455                 // domain passwords in a mysql database, so we should
1456                 // check this (incase $wgAuth->strict() is false).
1457                 if( strlen( $password ) < $wgMinimalPasswordLength ) {
1458                         return false;
1459                 }
1460
1461                 if( $wgAuth->authenticate( $this->getName(), $password ) ) {
1462                         return true;
1463                 } elseif( $wgAuth->strict() ) {
1464                         /* Auth plugin doesn't allow local authentication */
1465                         return false;
1466                 }
1467                 $ep = $this->encryptPassword( $password );
1468                 if ( 0 == strcmp( $ep, $this->mPassword ) ) {
1469                         return true;
1470                 } elseif ( ($this->mNewpassword != '') && (0 == strcmp( $ep, $this->mNewpassword )) ) {
1471                         return true;
1472                 } elseif ( function_exists( 'iconv' ) ) {
1473                         # Some wikis were converted from ISO 8859-1 to UTF-8, the passwords can't be converted
1474                         # Check for this with iconv
1475                         $cp1252hash = $this->encryptPassword( iconv( 'UTF-8', 'WINDOWS-1252', $password ) );
1476                         if ( 0 == strcmp( $cp1252hash, $this->mPassword ) ) {
1477                                 return true;
1478                         }
1479                 }
1480                 return false;
1481         }
1482
1483         /**
1484          * Initialize (if necessary) and return a session token value
1485          * which can be used in edit forms to show that the user's
1486          * login credentials aren't being hijacked with a foreign form
1487          * submission.
1488          *
1489          * @param mixed $salt - Optional function-specific data for hash.
1490          *                      Use a string or an array of strings.
1491          * @return string
1492          * @access public
1493          */
1494         function editToken( $salt = '' ) {
1495                 if( !isset( $_SESSION['wsEditToken'] ) ) {
1496                         $token = $this->generateToken();
1497                         $_SESSION['wsEditToken'] = $token;
1498                 } else {
1499                         $token = $_SESSION['wsEditToken'];
1500                 }
1501                 if( is_array( $salt ) ) {
1502                         $salt = implode( '|', $salt );
1503                 }
1504                 return md5( $token . $salt );
1505         }
1506
1507         /**
1508          * Generate a hex-y looking random token for various uses.
1509          * Could be made more cryptographically sure if someone cares.
1510          * @return string
1511          */
1512         function generateToken( $salt = '' ) {
1513                 $token = dechex( mt_rand() ) . dechex( mt_rand() );
1514                 return md5( $token . $salt );
1515         }
1516
1517         /**
1518          * Check given value against the token value stored in the session.
1519          * A match should confirm that the form was submitted from the
1520          * user's own login session, not a form submission from a third-party
1521          * site.
1522          *
1523          * @param string $val - the input value to compare
1524          * @param string $salt - Optional function-specific data for hash
1525          * @return bool
1526          * @access public
1527          */
1528         function matchEditToken( $val, $salt = '' ) {
1529                 return ( $val == $this->editToken( $salt ) );
1530         }
1531
1532         /**
1533          * Generate a new e-mail confirmation token and send a confirmation
1534          * mail to the user's given address.
1535          *
1536          * @return mixed True on success, a WikiError object on failure.
1537          */
1538         function sendConfirmationMail() {
1539                 global $wgIP, $wgContLang;
1540                 $url = $this->confirmationTokenUrl( $expiration );
1541                 return $this->sendMail( wfMsg( 'confirmemail_subject' ),
1542                         wfMsg( 'confirmemail_body',
1543                                 $wgIP,
1544                                 $this->getName(),
1545                                 $url,
1546                                 $wgContLang->timeanddate( $expiration, false ) ) );
1547         }
1548
1549         /**
1550          * Send an e-mail to this user's account. Does not check for
1551          * confirmed status or validity.
1552          *
1553          * @param string $subject
1554          * @param string $body
1555          * @param strong $from Optional from address; default $wgPasswordSender will be used otherwise.
1556          * @return mixed True on success, a WikiError object on failure.
1557          */
1558         function sendMail( $subject, $body, $from = null ) {
1559                 if( is_null( $from ) ) {
1560                         global $wgPasswordSender;
1561                         $from = $wgPasswordSender;
1562                 }
1563
1564                 require_once( 'UserMailer.php' );
1565                 $error = userMailer( $this->getEmail(), $from, $subject, $body );
1566
1567                 if( $error == '' ) {
1568                         return true;
1569                 } else {
1570                         return new WikiError( $error );
1571                 }
1572         }
1573
1574         /**
1575          * Generate, store, and return a new e-mail confirmation code.
1576          * A hash (unsalted since it's used as a key) is stored.
1577          * @param &$expiration mixed output: accepts the expiration time
1578          * @return string
1579          * @access private
1580          */
1581         function confirmationToken( &$expiration ) {
1582                 $fname = 'User::confirmationToken';
1583
1584                 $now = time();
1585                 $expires = $now + 7 * 24 * 60 * 60;
1586                 $expiration = wfTimestamp( TS_MW, $expires );
1587
1588                 $token = $this->generateToken( $this->mId . $this->mEmail . $expires );
1589                 $hash = md5( $token );
1590
1591                 $dbw =& wfGetDB( DB_MASTER );
1592                 $dbw->update( 'user',
1593                         array( 'user_email_token'         => $hash,
1594                                'user_email_token_expires' => $dbw->timestamp( $expires ) ),
1595                         array( 'user_id'                  => $this->mId ),
1596                         $fname );
1597
1598                 return $token;
1599         }
1600
1601         /**
1602          * Generate and store a new e-mail confirmation token, and return
1603          * the URL the user can use to confirm.
1604          * @param &$expiration mixed output: accepts the expiration time
1605          * @return string
1606          * @access private
1607          */
1608         function confirmationTokenUrl( &$expiration ) {
1609                 $token = $this->confirmationToken( $expiration );
1610                 $title = Title::makeTitle( NS_SPECIAL, 'Confirmemail/' . $token );
1611                 return $title->getFullUrl();
1612         }
1613
1614         /**
1615          * Mark the e-mail address confirmed and save.
1616          */
1617         function confirmEmail() {
1618                 $this->loadFromDatabase();
1619                 $this->mEmailAuthenticated = wfTimestampNow();
1620                 $this->saveSettings();
1621                 return true;
1622         }
1623
1624         /**
1625          * Is this user allowed to send e-mails within limits of current
1626          * site configuration?
1627          * @return bool
1628          */
1629         function canSendEmail() {
1630                 return $this->isEmailConfirmed();
1631         }
1632
1633         /**
1634          * Is this user allowed to receive e-mails within limits of current
1635          * site configuration?
1636          * @return bool
1637          */
1638         function canReceiveEmail() {
1639                 return $this->canSendEmail() && !$this->getOption( 'disablemail' );
1640         }
1641
1642         /**
1643          * Is this user's e-mail address valid-looking and confirmed within
1644          * limits of the current site configuration?
1645          *
1646          * If $wgEmailAuthentication is on, this may require the user to have
1647          * confirmed their address by returning a code or using a password
1648          * sent to the address from the wiki.
1649          *
1650          * @return bool
1651          */
1652         function isEmailConfirmed() {
1653                 global $wgEmailAuthentication;
1654                 $this->loadFromDatabase();
1655                 if( $this->isAnon() )
1656                         return false;
1657                 if( !$this->isValidEmailAddr( $this->mEmail ) )
1658                         return false;
1659                 if( $wgEmailAuthentication && !$this->getEmailAuthenticationTimestamp() )
1660                         return false;
1661                 return true;
1662         }
1663
1664         /**
1665          * @param array $groups list of groups
1666          * @return array list of permission key names for given groups combined
1667          * @static
1668          */
1669         function getGroupPermissions( $groups ) {
1670                 global $wgGroupPermissions;
1671                 $rights = array();
1672                 foreach( $groups as $group ) {
1673                         if( isset( $wgGroupPermissions[$group] ) ) {
1674                                 $rights = array_merge( $rights,
1675                                         array_keys( array_filter( $wgGroupPermissions[$group] ) ) );
1676                         }
1677                 }
1678                 return $rights;
1679         }
1680
1681         /**
1682          * @param string $group key name
1683          * @return string localized descriptive name, if provided
1684          * @static
1685          */
1686         function getGroupName( $group ) {
1687                 $key = "group-$group-name";
1688                 $name = wfMsg( $key );
1689                 if( $name == '' || $name == "&lt;$key&gt;" ) {
1690                         return $group;
1691                 } else {
1692                         return $name;
1693                 }
1694         }
1695
1696         /**
1697          * Return the set of defined explicit groups.
1698          * The * and 'user' groups are not included.
1699          * @return array
1700          * @static
1701          */
1702         function getAllGroups() {
1703                 global $wgGroupPermissions;
1704                 return array_diff(
1705                         array_keys( $wgGroupPermissions ),
1706                         array( '*', 'user' ) );
1707         }
1708
1709 }
1710
1711 ?>