includes/specials/SpecialBlockip.php

   1 <?php
   2 /**
   3  * Constructor for Special:Blockip page
   4  *
   5  * @file
   6  * @ingroup SpecialPage
   7  */
   8
   9 /**
  10  * Constructor
  11  */
  12 function wfSpecialBlockip( $par ) {
  13         global $wgUser, $wgOut, $wgRequest;
  14
  15         # Can't block when the database is locked
  16         if( wfReadOnly() ) {
  17                 $wgOut->readOnlyPage();
  18                 return;
  19         }
  20         # Permission check
  21         if( !$wgUser->isAllowed( 'block' ) ) {
  22                 $wgOut->permissionRequired( 'block' );
  23                 return;
  24         }
  25
  26         $ipb = new IPBlockForm( $par );
  27
  28         # bug 15810: blocked admins should have limited access here
  29         if ( $wgUser->isBlocked() ) {
  30                 $status = IPBlockForm::checkUnblockSelf( $ipb->BlockAddress );
  31                 if ( $status !== true ) {
  32                         throw new ErrorPageError( 'badaccess', $status );
  33                 }
  34         }
  35
  36         $action = $wgRequest->getVal( 'action' );
  37         if( 'success' == $action ) {
  38                 $ipb->showSuccess();
  39         } elseif( $wgRequest->wasPosted() && 'submit' == $action &&
  40                 $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ) ) ) {
  41                 $ipb->doSubmit();
  42         } else {
  43                 $ipb->showForm( '' );
  44         }
  45 }
  46
  47 /**
  48  * Form object for the Special:Blockip page.
  49  *
  50  * @ingroup SpecialPage
  51  */
  52 class IPBlockForm {
  53         var $BlockAddress, $BlockExpiry, $BlockReason;
  54         // The maximum number of edits a user can have and still be hidden
  55         const HIDEUSER_CONTRIBLIMIT = 1000;
  56
  57         public function __construct( $par ) {
  58                 global $wgRequest, $wgUser, $wgBlockAllowsUTEdit;
  59
  60                 $this->BlockAddress = $wgRequest->getVal( 'wpBlockAddress', $wgRequest->getVal( 'ip', $par ) );
  61                 $this->BlockAddress = strtr( $this->BlockAddress, '_', ' ' );
  62                 $this->BlockReason = $wgRequest->getText( 'wpBlockReason' );
  63                 $this->BlockReasonList = $wgRequest->getText( 'wpBlockReasonList' );
  64                 $this->BlockExpiry = $wgRequest->getVal( 'wpBlockExpiry', wfMsg( 'ipbotheroption' ) );
  65                 $this->BlockOther = $wgRequest->getVal( 'wpBlockOther', '' );
  66
  67                 # Unchecked checkboxes are not included in the form data at all, so having one
  68                 # that is true by default is a bit tricky
  69                 $byDefault = !$wgRequest->wasPosted();
  70                 $this->BlockAnonOnly = $wgRequest->getBool( 'wpAnonOnly', $byDefault );
  71                 $this->BlockCreateAccount = $wgRequest->getBool( 'wpCreateAccount', $byDefault );
  72                 $this->BlockEnableAutoblock = $wgRequest->getBool( 'wpEnableAutoblock', $byDefault );
  73                 $this->BlockEmail = false;
  74                 if( self::canBlockEmail( $wgUser ) ) {
  75                         $this->BlockEmail = $wgRequest->getBool( 'wpEmailBan', false );
  76                 }
  77                 $this->BlockWatchUser = $wgRequest->getBool( 'wpWatchUser', false ) && $wgUser->isLoggedIn();
  78                 # Re-check user's rights to hide names, very serious, defaults to null
  79                 if( $wgUser->isAllowed( 'hideuser' ) ) {
  80                         $this->BlockHideName = $wgRequest->getBool( 'wpHideName', null );
  81                 } else {
  82                         $this->BlockHideName = false;
  83                 }
  84                 $this->BlockAllowUsertalk = ( $wgRequest->getBool( 'wpAllowUsertalk', $byDefault ) && $wgBlockAllowsUTEdit );
  85                 $this->BlockReblock = $wgRequest->getBool( 'wpChangeBlock', false );
  86
  87                 $this->wasPosted = $wgRequest->wasPosted();
  88         }
  89
  90         public function showForm( $err ) {
  91                 global $wgOut, $wgUser, $wgSysopUserBans;
  92
  93                 $wgOut->setPageTitle( wfMsg( 'blockip-title' ) );
  94                 $wgOut->addWikiMsg( 'blockiptext' );
  95
  96                 if( $wgSysopUserBans ) {
  97                         $mIpaddress = Xml::label( wfMsg( 'ipadressorusername' ), 'mw-bi-target' );
  98                 } else {
  99                         $mIpaddress = Xml::label( wfMsg( 'ipaddress' ), 'mw-bi-target' );
 100                 }
 101                 $mIpbexpiry = Xml::label( wfMsg( 'ipbexpiry' ), 'wpBlockExpiry' );
 102                 $mIpbother = Xml::label( wfMsg( 'ipbother' ), 'mw-bi-other' );
 103                 $mIpbreasonother = Xml::label( wfMsg( 'ipbreason' ), 'wpBlockReasonList' );
 104                 $mIpbreason = Xml::label( wfMsg( 'ipbotherreason' ), 'mw-bi-reason' );
 105
 106                 $titleObj = SpecialPage::getTitleFor( 'Blockip' );
 107                 $user = User::newFromName( $this->BlockAddress );
 108
 109                 $alreadyBlocked = false;
 110                 $otherBlockedMsgs = array();
 111                 if( $err && $err[0] != 'ipb_already_blocked' ) {
 112                         $key = array_shift( $err );
 113                         $msg = wfMsgReal( $key, $err );
 114                         $wgOut->setSubtitle( wfMsgHtml( 'formerror' ) );
 115                         $wgOut->addHTML( Xml::tags( 'p', array( 'class' => 'error' ), $msg ) );
 116                 } elseif( $this->BlockAddress !== null ) {
 117                         # Get other blocks, i.e. from GlobalBlocking or TorBlock extension
 118                         wfRunHooks( 'OtherBlockLogLink', array( &$otherBlockedMsgs, $this->BlockAddress ) );
 119
 120                         $userId = is_object( $user ) ? $user->getId() : 0;
 121                         $currentBlock = Block::newFromDB( $this->BlockAddress, $userId );
 122                         if( !is_null( $currentBlock ) && !$currentBlock->mAuto && # The block exists and isn't an autoblock
 123                                 ( $currentBlock->mRangeStart == $currentBlock->mRangeEnd || # The block isn't a rangeblock
 124                                 # or if it is, the range is what we're about to block
 125                                 ( $currentBlock->mAddress == $this->BlockAddress ) )
 126                         ) {
 127                                 $alreadyBlocked = true;
 128                                 # Set the block form settings to the existing block
 129                                 if( !$this->wasPosted ) {
 130                                         $this->BlockAnonOnly = $currentBlock->mAnonOnly;
 131                                         $this->BlockCreateAccount = $currentBlock->mCreateAccount;
 132                                         $this->BlockEnableAutoblock = $currentBlock->mEnableAutoblock;
 133                                         $this->BlockEmail = $currentBlock->mBlockEmail;
 134                                         $this->BlockHideName = $currentBlock->mHideName;
 135                                         $this->BlockAllowUsertalk = $currentBlock->mAllowUsertalk;
 136                                         if( $currentBlock->mExpiry == 'infinity' ) {
 137                                                 $this->BlockOther = 'indefinite';
 138                                         } else {
 139                                                 $this->BlockOther = wfTimestamp( TS_ISO_8601, $currentBlock->mExpiry );
 140                                         }
 141                                         $this->BlockReason = $currentBlock->mReason;
 142                                 }
 143                         }
 144                 }
 145
 146                 # Show other blocks from extensions, i.e. GlockBlocking and TorBlock
 147                 if( count( $otherBlockedMsgs ) ) {
 148                         $wgOut->addHTML(
 149                                 Html::rawElement( 'h2', array(), wfMsgExt( 'ipb-otherblocks-header', 'parseinline',  count( $otherBlockedMsgs ) ) ) . "\n"
 150                         );
 151                         $list = '';
 152                         foreach( $otherBlockedMsgs as $link ) {
 153                                 $list .= Html::rawElement( 'li', array(), $link ) . "\n";
 154                         }
 155                         $wgOut->addHTML( Html::rawElement( 'ul', array( 'class' => 'mw-blockip-alreadyblocked' ), $list ) . "\n" );
 156                 }
 157
 158                 # Username/IP is blocked already locally
 159                 if( $alreadyBlocked ) {
 160                         $wgOut->addWikiMsg( 'ipb-needreblock', $this->BlockAddress );
 161                 }
 162
 163                 $scBlockExpiryOptions = wfMsgForContent( 'ipboptions' );
 164
 165                 $showblockoptions = $scBlockExpiryOptions != '-';
 166                 if( !$showblockoptions ) $mIpbother = $mIpbexpiry;
 167
 168                 $blockExpiryFormOptions = Xml::option( wfMsg( 'ipbotheroption' ), 'other' );
 169                 foreach( explode( ',', $scBlockExpiryOptions ) as $option ) {
 170                         if( strpos( $option, ':' ) === false ) $option = "$option:$option";
 171                         list( $show, $value ) = explode( ':', $option );
 172                         $show = htmlspecialchars( $show );
 173                         $value = htmlspecialchars( $value );
 174                         $blockExpiryFormOptions .= Xml::option( $show, $value, $this->BlockExpiry === $value ? true : false ) . "\n";
 175                 }
 176
 177                 $reasonDropDown = Xml::listDropDown( 'wpBlockReasonList',
 178                         wfMsgForContent( 'ipbreason-dropdown' ),
 179                         wfMsgForContent( 'ipbreasonotherlist' ), $this->BlockReasonList, 'wpBlockDropDown', 4 );
 180
 181                 global $wgStylePath, $wgStyleVersion;
 182                 $wgOut->addHTML(
 183                         Xml::tags( 'script', array( 'type' => 'text/javascript', 'src' => "$wgStylePath/common/block.js?$wgStyleVersion" ), '' ) .
 184                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL( 'action=submit' ), 'id' => 'blockip' ) ) .
 185                         Xml::openElement( 'fieldset' ) .
 186                         Xml::element( 'legend', null, wfMsg( 'blockip-legend' ) ) .
 187                         Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-blockip-table' ) ) .
 188                         "<tr>
 189                                 <td class='mw-label'>
 190                                         {$mIpaddress}
 191                                 </td>
 192                                 <td class='mw-input'>" .
 193                                         Html::input( 'wpBlockAddress', $this->BlockAddress, 'text', array(
 194                                                 'tabindex' => '1',
 195                                                 'id' => 'mw-bi-target',
 196                                                 'onchange' => 'updateBlockOptions()',
 197                                                 'size' => '45',
 198                                                 'required' => ''
 199                                         ) + ( $this->BlockAddress ? array() : array( 'autofocus' ) ) ). "
 200                                 </td>
 201                         </tr>
 202                         <tr>"
 203                 );
 204                 if( $showblockoptions ) {
 205                         $wgOut->addHTML("
 206                                 <td class='mw-label'>
 207                                         {$mIpbexpiry}
 208                                 </td>
 209                                 <td class='mw-input'>" .
 210                                         Xml::tags( 'select',
 211                                                 array(
 212                                                         'id' => 'wpBlockExpiry',
 213                                                         'name' => 'wpBlockExpiry',
 214                                                         'onchange' => 'considerChangingExpiryFocus()',
 215                                                         'tabindex' => '2' ),
 216                                                 $blockExpiryFormOptions ) .
 217                                 "</td>"
 218                         );
 219                 }
 220                 $wgOut->addHTML("
 221                         </tr>
 222                         <tr id='wpBlockOther'>
 223                                 <td class='mw-label'>
 224                                         {$mIpbother}
 225                                 </td>
 226                                 <td class='mw-input'>" .
 227                                         Xml::input( 'wpBlockOther', 45, $this->BlockOther,
 228                                                 array( 'tabindex' => '3', 'id' => 'mw-bi-other' ) ) . "
 229                                 </td>
 230                         </tr>
 231                         <tr>
 232                                 <td class='mw-label'>
 233                                         {$mIpbreasonother}
 234                                 </td>
 235                                 <td class='mw-input'>
 236                                         {$reasonDropDown}
 237                                 </td>
 238                         </tr>
 239                         <tr id=\"wpBlockReason\">
 240                                 <td class='mw-label'>
 241                                         {$mIpbreason}
 242                                 </td>
 243                                 <td class='mw-input'>" .
 244                                 Html::input( 'wpBlockReason', $this->BlockReason, 'text', array(
 245                                         'tabindex' => '5',
 246                                         'id' => 'mw-bi-reason',
 247                                         'maxlength' => '200',
 248                                         'size' => '45'
 249                                 ) + ( $this->BlockAddress ? array( 'autofocus' ) : array() ) ) . "
 250                                 </td>
 251                         </tr>
 252                         <tr id='wpAnonOnlyRow'>
 253                                 <td>&nbsp;</td>
 254                                 <td class='mw-input'>" .
 255                                 Xml::checkLabel( wfMsg( 'ipbanononly' ),
 256                                                 'wpAnonOnly', 'wpAnonOnly', $this->BlockAnonOnly,
 257                                                 array( 'tabindex' => '6' ) ) . "
 258                                 </td>
 259                         </tr>
 260                         <tr id='wpCreateAccountRow'>
 261                                 <td>&nbsp;</td>
 262                                 <td class='mw-input'>" .
 263                                         Xml::checkLabel( wfMsg( 'ipbcreateaccount' ),
 264                                                 'wpCreateAccount', 'wpCreateAccount', $this->BlockCreateAccount,
 265                                                 array( 'tabindex' => '7' ) ) . "
 266                                 </td>
 267                         </tr>
 268                         <tr id='wpEnableAutoblockRow'>
 269                                 <td>&nbsp;</td>
 270                                 <td class='mw-input'>" .
 271                                         Xml::checkLabel( wfMsg( 'ipbenableautoblock' ),
 272                                                 'wpEnableAutoblock', 'wpEnableAutoblock', $this->BlockEnableAutoblock,
 273                                                 array( 'tabindex' => '8' ) ) . "
 274                                 </td>
 275                         </tr>"
 276                 );
 277
 278                 if( self::canBlockEmail( $wgUser ) ) {
 279                         $wgOut->addHTML("
 280                                 <tr id='wpEnableEmailBan'>
 281                                         <td>&nbsp;</td>
 282                                         <td class='mw-input'>" .
 283                                                 Xml::checkLabel( wfMsg( 'ipbemailban' ),
 284                                                         'wpEmailBan', 'wpEmailBan', $this->BlockEmail,
 285                                                         array( 'tabindex' => '9' ) ) . "
 286                                         </td>
 287                                 </tr>"
 288                         );
 289                 }
 290
 291                 // Allow some users to hide name from block log, blocklist and listusers
 292                 if( $wgUser->isAllowed( 'hideuser' ) ) {
 293                         $wgOut->addHTML("
 294                                 <tr id='wpEnableHideUser'>
 295                                         <td>&nbsp;</td>
 296                                         <td class='mw-input'><strong>" .
 297                                                 Xml::checkLabel( wfMsg( 'ipbhidename' ),
 298                                                         'wpHideName', 'wpHideName', $this->BlockHideName,
 299                                                         array( 'tabindex' => '10' )
 300                                                 ) . "
 301                                         </strong></td>
 302                                 </tr>"
 303                         );
 304                 }
 305
 306                 # Watchlist their user page? (Only if user is logged in)
 307                 if( $wgUser->isLoggedIn() ) {
 308                         $wgOut->addHTML("
 309                         <tr id='wpEnableWatchUser'>
 310                                 <td>&nbsp;</td>
 311                                 <td class='mw-input'>" .
 312                                         Xml::checkLabel( wfMsg( 'ipbwatchuser' ),
 313                                                 'wpWatchUser', 'wpWatchUser', $this->BlockWatchUser,
 314                                                 array( 'tabindex' => '11' ) ) . "
 315                                 </td>
 316                         </tr>"
 317                         );
 318                 }
 319
 320                 # Can we explicitly disallow the use of user_talk?
 321                 global $wgBlockAllowsUTEdit;
 322                 if( $wgBlockAllowsUTEdit ){
 323                         $wgOut->addHTML("
 324                                 <tr id='wpAllowUsertalkRow'>
 325                                         <td>&nbsp;</td>
 326                                         <td class='mw-input'>" .
 327                                                 Xml::checkLabel( wfMsg( 'ipballowusertalk' ),
 328                                                         'wpAllowUsertalk', 'wpAllowUsertalk', $this->BlockAllowUsertalk,
 329                                                         array( 'tabindex' => '12' ) ) . "
 330                                         </td>
 331                                 </tr>"
 332                         );
 333                 }
 334
 335                 $wgOut->addHTML("
 336                         <tr>
 337                                 <td style='padding-top: 1em'>&nbsp;</td>
 338                                 <td  class='mw-submit' style='padding-top: 1em'>" .
 339                                         Xml::submitButton( wfMsg( $alreadyBlocked ? 'ipb-change-block' : 'ipbsubmit' ),
 340                                                 array( 'name' => 'wpBlock', 'tabindex' => '13', 'accesskey' => 's' ) ) . "
 341                                 </td>
 342                         </tr>" .
 343                         Xml::closeElement( 'table' ) .
 344                         Xml::hidden( 'wpEditToken', $wgUser->editToken() ) .
 345                         ( $alreadyBlocked ? Xml::hidden( 'wpChangeBlock', 1 ) : "" ) .
 346                         Xml::closeElement( 'fieldset' ) .
 347                         Xml::closeElement( 'form' ) .
 348                         Xml::tags( 'script', array( 'type' => 'text/javascript' ), 'updateBlockOptions()' ) . "\n"
 349                 );
 350
 351                 $wgOut->addHTML( $this->getConvenienceLinks() );
 352
 353                 if( is_object( $user ) ) {
 354                         $this->showLogFragment( $wgOut, $user->getUserPage() );
 355                 } elseif( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/', $this->BlockAddress ) ) {
 356                         $this->showLogFragment( $wgOut, Title::makeTitle( NS_USER, $this->BlockAddress ) );
 357                 } elseif( preg_match( '/^\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}/', $this->BlockAddress ) ) {
 358                         $this->showLogFragment( $wgOut, Title::makeTitle( NS_USER, $this->BlockAddress ) );
 359                 }
 360         }
 361
 362         /**
 363          * Can we do an email block?
 364          * @param User $user The sysop wanting to make a block
 365          * @return boolean
 366          */
 367         public static function canBlockEmail( $user ) {
 368                 global $wgEnableUserEmail, $wgSysopEmailBans;
 369                 return ( $wgEnableUserEmail && $wgSysopEmailBans && $user->isAllowed( 'blockemail' ) );
 370         }
 371
 372         /**
 373          * bug 15810: blocked admins should not be able to block/unblock
 374          * others, and probably shouldn't be able to unblock themselves
 375          * either.
 376          * @param $user User, Int or String
 377          */
 378         public static function checkUnblockSelf( $user ) {
 379                 global $wgUser;
 380                 if ( is_int( $user ) ) {
 381                         $user = User::newFromId( $user );
 382                 } elseif ( is_string( $user ) ) {
 383                         $user = User::newFromName( $user );
 384                 }
 385                 if( $user instanceof User && $user->getId() == $wgUser->getId() ) {
 386                         # User is trying to unblock themselves
 387                         if ( $wgUser->isAllowed( 'unblockself' ) ) {
 388                                 return true;
 389                         } else {
 390                                 return 'ipbnounblockself';
 391                         }
 392                 } else {
 393                         # User is trying to block/unblock someone else
 394                         return 'ipbblocked';
 395                 }
 396         }
 397
 398         /**
 399          * Backend block code.
 400          * $userID and $expiry will be filled accordingly
 401          * @return array(message key, arguments) on failure, empty array on success
 402          */
 403         function doBlock( &$userId = null, &$expiry = null ) {
 404                 global $wgUser, $wgSysopUserBans, $wgSysopRangeBans, $wgBlockAllowsUTEdit, $wgBlockCIDRLimit;
 405
 406                 $userId = 0;
 407                 # Expand valid IPv6 addresses, usernames are left as is
 408                 $this->BlockAddress = IP::sanitizeIP( $this->BlockAddress );
 409                 # isIPv4() and IPv6() are used for final validation
 410                 $rxIP4 = '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
 411                 $rxIP6 = '\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}:\w{1,4}';
 412                 $rxIP = "($rxIP4|$rxIP6)";
 413
 414                 # Check for invalid specifications
 415                 if( !preg_match( "/^$rxIP$/", $this->BlockAddress ) ) {
 416                         $matches = array();
 417                         if( preg_match( "/^($rxIP4)\\/(\\d{1,2})$/", $this->BlockAddress, $matches ) ) {
 418                                 # IPv4
 419                                 if( $wgSysopRangeBans ) {
 420                                         if( !IP::isIPv4( $this->BlockAddress ) || $matches[2] > 32 ) {
 421                                                 return array( 'ip_range_invalid' );
 422                                         } elseif ( $matches[2] < $wgBlockCIDRLimit['IPv4'] ) {
 423                                                 return array( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv4'] );
 424                                         }
 425                                         $this->BlockAddress = Block::normaliseRange( $this->BlockAddress );
 426                                 } else {
 427                                         # Range block illegal
 428                                         return array( 'range_block_disabled' );
 429                                 }
 430                         } elseif( preg_match( "/^($rxIP6)\\/(\\d{1,3})$/", $this->BlockAddress, $matches ) ) {
 431                                 # IPv6
 432                                 if( $wgSysopRangeBans ) {
 433                                         if( !IP::isIPv6( $this->BlockAddress ) || $matches[2] > 128 ) {
 434                                                 return array( 'ip_range_invalid' );
 435                                         } elseif( $matches[2] < $wgBlockCIDRLimit['IPv6'] ) {
 436                                                 return array( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv6'] );
 437                                         }
 438                                         $this->BlockAddress = Block::normaliseRange( $this->BlockAddress );
 439                                 } else {
 440                                         # Range block illegal
 441                                         return array('range_block_disabled');
 442                                 }
 443                         } else {
 444                                 # Username block
 445                                 if( $wgSysopUserBans ) {
 446                                         $user = User::newFromName( $this->BlockAddress );
 447                                         if( $user instanceof User && $user->getId() ) {
 448                                                 # Use canonical name
 449                                                 $userId = $user->getId();
 450                                                 $this->BlockAddress = $user->getName();
 451                                         } else {
 452                                                 return array( 'nosuchusershort', htmlspecialchars( $user ? $user->getName() : $this->BlockAddress ) );
 453                                         }
 454                                 } else {
 455                                         return array( 'badipaddress' );
 456                                 }
 457                         }
 458                 }
 459
 460                 if( $wgUser->isBlocked() && ( $wgUser->getId() !== $userId ) ) {
 461                         return array( 'cant-block-while-blocked' );
 462                 }
 463
 464                 $reasonstr = $this->BlockReasonList;
 465                 if( $reasonstr != 'other' && $this->BlockReason != '' ) {
 466                         // Entry from drop down menu + additional comment
 467                         $reasonstr .= wfMsgForContent( 'colon-separator' ) . $this->BlockReason;
 468                 } elseif( $reasonstr == 'other' ) {
 469                         $reasonstr = $this->BlockReason;
 470                 }
 471
 472                 $expirestr = $this->BlockExpiry;
 473                 if( $expirestr == 'other' )
 474                         $expirestr = $this->BlockOther;
 475
 476                 if( ( strlen( $expirestr ) == 0) || ( strlen( $expirestr ) > 50 ) ) {
 477                         return array( 'ipb_expiry_invalid' );
 478                 }
 479
 480                 if( false === ( $expiry = Block::parseExpiryInput( $expirestr ) ) ) {
 481                         // Bad expiry.
 482                         return array( 'ipb_expiry_invalid' );
 483                 }
 484
 485                 if( $this->BlockHideName ) {
 486                         // Recheck params here...
 487                         if( !$userId || !$wgUser->isAllowed('hideuser') ) {
 488                                 $this->BlockHideName = false; // IP users should not be hidden
 489                         } elseif( $expiry !== 'infinity' ) {
 490                                 // Bad expiry.
 491                                 return array( 'ipb_expiry_temp' );
 492                         } elseif( User::edits( $userId ) > self::HIDEUSER_CONTRIBLIMIT ) {
 493                                 // Typically, the user should have a handful of edits.
 494                                 // Disallow hiding users with many edits for performance.
 495                                 return array( 'ipb_hide_invalid' );
 496                         }
 497                 }
 498
 499                 # Create block object
 500                 # Note: for a user block, ipb_address is only for display purposes
 501                 $block = new Block( $this->BlockAddress, $userId, $wgUser->getId(),
 502                         $reasonstr, wfTimestampNow(), 0, $expiry, $this->BlockAnonOnly,
 503                         $this->BlockCreateAccount, $this->BlockEnableAutoblock, $this->BlockHideName,
 504                         $this->BlockEmail,
 505                         isset( $this->BlockAllowUsertalk ) ? $this->BlockAllowUsertalk : $wgBlockAllowsUTEdit
 506                 );
 507
 508                 # Should this be privately logged?
 509                 $suppressLog = (bool)$this->BlockHideName;
 510                 if( wfRunHooks( 'BlockIp', array( &$block, &$wgUser ) ) ) {
 511                         # Try to insert block. Is there a conflicting block?
 512                         if( !$block->insert() ) {
 513                                 # Show form unless the user is already aware of this...
 514                                 if( !$this->BlockReblock ) {
 515                                         return array( 'ipb_already_blocked' );
 516                                 # Otherwise, try to update the block...
 517                                 } else {
 518                                         # This returns direct blocks before autoblocks/rangeblocks, since we should
 519                                         # be sure the user is blocked by now it should work for our purposes
 520                                         $currentBlock = Block::newFromDB( $this->BlockAddress, $userId );
 521                                         if( $block->equals( $currentBlock ) ) {
 522                                                 return array( 'ipb_already_blocked' );
 523                                         }
 524                                         # If the name was hidden and the blocking user cannot hide
 525                                         # names, then don't allow any block changes...
 526                                         if( $currentBlock->mHideName && !$wgUser->isAllowed( 'hideuser' ) ) {
 527                                                 return array( 'cant-see-hidden-user' );
 528                                         }
 529                                         $currentBlock->delete();
 530                                         $block->insert();
 531                                         # If hiding/unhiding a name, this should go in the private logs
 532                                         $suppressLog = $suppressLog || (bool)$currentBlock->mHideName;
 533                                         $log_action = 'reblock';
 534                                         # Unset _deleted fields if requested
 535                                         if( $currentBlock->mHideName && !$this->BlockHideName ) {
 536                                                 self::unsuppressUserName( $this->BlockAddress, $userId );
 537                                         }
 538                                 }
 539                         } else {
 540                                 $log_action = 'block';
 541                         }
 542                         wfRunHooks( 'BlockIpComplete', array( $block, $wgUser ) );
 543
 544                         # Set *_deleted fields if requested
 545                         if( $this->BlockHideName ) {
 546                                 self::suppressUserName( $this->BlockAddress, $userId );
 547                         }
 548
 549                         # Only show watch link when this is no range block
 550                         if( $this->BlockWatchUser && $block->mRangeStart == $block->mRangeEnd ) {
 551                                 $wgUser->addWatch( Title::makeTitle( NS_USER, $this->BlockAddress ) );
 552                         }
 553
 554                         # Block constructor sanitizes certain block options on insert
 555                         $this->BlockEmail = $block->mBlockEmail;
 556                         $this->BlockEnableAutoblock = $block->mEnableAutoblock;
 557
 558                         # Prepare log parameters
 559                         $logParams = array();
 560                         $logParams[] = $expirestr;
 561                         $logParams[] = $this->blockLogFlags();
 562
 563                         # Make log entry, if the name is hidden, put it in the oversight log
 564                         $log_type = $suppressLog ? 'suppress' : 'block';
 565                         $log = new LogPage( $log_type );
 566                         $log->addEntry( $log_action, Title::makeTitle( NS_USER, $this->BlockAddress ),
 567                                 $reasonstr, $logParams );
 568
 569                         # Report to the user
 570                         return array();
 571                 } else {
 572                         return array( 'hookaborted' );
 573                 }
 574         }
 575
 576         public static function suppressUserName( $name, $userId, $dbw = null ) {
 577                 $op = '|'; // bitwise OR
 578                 return self::setUsernameBitfields( $name, $userId, $op, $dbw );
 579         }
 580
 581         public static function unsuppressUserName( $name, $userId, $dbw = null ) {
 582                 $op = '&'; // bitwise AND
 583                 return self::setUsernameBitfields( $name, $userId, $op, $dbw );
 584         }
 585
 586         private static function setUsernameBitfields( $name, $userId, $op, $dbw ) {
 587                 if( $op !== '|' && $op !== '&' ) return false; // sanity check
 588                 if( !$dbw )
 589                         $dbw = wfGetDB( DB_MASTER );
 590                 $delUser = Revision::DELETED_USER | Revision::DELETED_RESTRICTED;
 591                 $delAction = LogPage::DELETED_ACTION | Revision::DELETED_RESTRICTED;
 592                 # Normalize user name
 593                 $userTitle = Title::makeTitleSafe( NS_USER, $name );
 594                 $userDbKey = $userTitle->getDBkey();
 595                 # To suppress, we OR the current bitfields with Revision::DELETED_USER
 596                 # to put a 1 in the username *_deleted bit. To unsuppress we AND the
 597                 # current bitfields with the inverse of Revision::DELETED_USER. The
 598                 # username bit is made to 0 (x & 0 = 0), while others are unchanged (x & 1 = x).
 599                 # The same goes for the sysop-restricted *_deleted bit.
 600                 if( $op == '&' ) {
 601                         $delUser = "~{$delUser}";
 602                         $delAction = "~{$delAction}";
 603                 }
 604                 # Hide name from live edits
 605                 $dbw->update( 'revision', array( "rev_deleted = rev_deleted $op $delUser" ),
 606                         array( 'rev_user' => $userId ), __METHOD__ );
 607                 # Hide name from deleted edits
 608                 $dbw->update( 'archive', array( "ar_deleted = ar_deleted $op $delUser" ),
 609                         array( 'ar_user_text' => $name ), __METHOD__ );
 610                 # Hide name from logs
 611                 $dbw->update( 'logging', array( "log_deleted = log_deleted $op $delUser" ),
 612                         array( 'log_user' => $userId, "log_type != 'suppress'" ), __METHOD__ );
 613                 $dbw->update( 'logging', array( "log_deleted = log_deleted $op $delAction" ),
 614                         array( 'log_namespace' => NS_USER, 'log_title' => $userDbKey,
 615                                 "log_type != 'suppress'" ), __METHOD__ );
 616                 # Hide name from RC
 617                 $dbw->update( 'recentchanges', array( "rc_deleted = rc_deleted $op $delUser" ),
 618                         array( 'rc_user_text' => $name ), __METHOD__ );
 619                 $dbw->update( 'recentchanges', array( "rc_deleted = rc_deleted $op $delAction" ),
 620                         array( 'rc_namespace' => NS_USER, 'rc_title' => $userDbKey, 'rc_logid > 0' ), __METHOD__ );
 621                 # Hide name from live images
 622                 $dbw->update( 'oldimage', array( "oi_deleted = oi_deleted $op $delUser" ),
 623                         array( 'oi_user_text' => $name ), __METHOD__ );
 624                 # Hide name from deleted images
 625                 # WMF - schema change pending
 626                 # $dbw->update( 'filearchive', array( "fa_deleted = fa_deleted $op $delUser" ),
 627                 #       array( 'fa_user_text' => $name ), __METHOD__ );
 628                 # Done!
 629                 return true;
 630         }
 631
 632         /**
 633          * UI entry point for blocking
 634          * Wraps around doBlock()
 635          */
 636         public function doSubmit() {
 637                 global $wgOut;
 638                 $retval = $this->doBlock();
 639                 if( empty( $retval ) ) {
 640                         $titleObj = SpecialPage::getTitleFor( 'Blockip' );
 641                         $wgOut->redirect( $titleObj->getFullURL( 'action=success&ip=' .
 642                                 urlencode( $this->BlockAddress ) ) );
 643                         return;
 644                 }
 645                 $this->showForm( $retval );
 646         }
 647
 648         public function showSuccess() {
 649                 global $wgOut;
 650
 651                 $wgOut->setPageTitle( wfMsg( 'blockip-title' ) );
 652                 $wgOut->setSubtitle( wfMsg( 'blockipsuccesssub' ) );
 653                 $text = wfMsgExt( 'blockipsuccesstext', array( 'parse' ), $this->BlockAddress );
 654                 $wgOut->addHTML( $text );
 655         }
 656
 657         private function showLogFragment( $out, $title ) {
 658                 global $wgUser;
 659
 660                 // Used to support GENDER in 'blocklog-showlog' and 'blocklog-showsuppresslog'
 661                 $userBlocked = $title->getText();
 662
 663                 LogEventsList::showLogExtract(
 664                         $out,
 665                         'block',
 666                         $title->getPrefixedText(),
 667                         '',
 668                         array(
 669                                 'lim' => 10,
 670                                 'msgKey' => array(
 671                                         'blocklog-showlog',
 672                                         $userBlocked
 673                                 ),
 674                                 'showIfEmpty' => false
 675                         )
 676                 );
 677
 678                 // Add suppression block entries if allowed
 679                 if( $wgUser->isAllowed( 'suppressionlog' ) ) {
 680                         LogEventsList::showLogExtract( $out, 'suppress', $title->getPrefixedText(), '',
 681                                 array(
 682                                         'lim' => 10,
 683                                         'conds' => array(
 684                                                 'log_action' => array(
 685                                                         'block',
 686                                                         'reblock',
 687                                                         'unblock'
 688                                                 )
 689                                         ),
 690                                         'msgKey' => array(
 691                                                 'blocklog-showsuppresslog',
 692                                                 $userBlocked
 693                                         ),
 694                                         'showIfEmpty' => false
 695                                 )
 696                         );
 697                 }
 698         }
 699
 700         /**
 701          * Return a comma-delimited list of "flags" to be passed to the log
 702          * reader for this block, to provide more information in the logs
 703          *
 704          * @return array
 705          */
 706         private function blockLogFlags() {
 707                 global $wgBlockAllowsUTEdit;
 708                 $flags = array();
 709                 if( $this->BlockAnonOnly && IP::isIPAddress( $this->BlockAddress ) )
 710                         // when blocking a user the option 'anononly' is not available/has no effect -> do not write this into log
 711                         $flags[] = 'anononly';
 712                 if( $this->BlockCreateAccount )
 713                         $flags[] = 'nocreate';
 714                 if( !$this->BlockEnableAutoblock && !IP::isIPAddress( $this->BlockAddress ) )
 715                         // Same as anononly, this is not displayed when blocking an IP address
 716                         $flags[] = 'noautoblock';
 717                 if( $this->BlockEmail )
 718                         $flags[] = 'noemail';
 719                 if( !$this->BlockAllowUsertalk && $wgBlockAllowsUTEdit )
 720                         $flags[] = 'nousertalk';
 721                 if( $this->BlockHideName )
 722                         $flags[] = 'hiddenname';
 723                 return implode( ',', $flags );
 724         }
 725
 726         /**
 727          * Builds unblock and block list links
 728          *
 729          * @return string
 730          */
 731         private function getConvenienceLinks() {
 732                 global $wgUser, $wgLang;
 733                 $skin = $wgUser->getSkin();
 734                 if( $this->BlockAddress )
 735                         $links[] = $this->getContribsLink( $skin );
 736                 $links[] = $this->getUnblockLink( $skin );
 737                 $links[] = $this->getBlockListLink( $skin );
 738                 if ( $wgUser->isAllowed( 'editinterface' ) ) {
 739                         $title = Title::makeTitle( NS_MEDIAWIKI, 'Ipbreason-dropdown' );
 740                         $links[] = $skin->link(
 741                                 $title,
 742                                 wfMsgHtml( 'ipb-edit-dropdown' ),
 743                                 array(),
 744                                 array( 'action' => 'edit' )
 745                         );
 746                 }
 747                 return '<p class="mw-ipb-conveniencelinks">' . $wgLang->pipeList( $links ) . '</p>';
 748         }
 749
 750         /**
 751          * Build a convenient link to a user or IP's contribs
 752          * form
 753          *
 754          * @param $skin Skin to use
 755          * @return string
 756          */
 757         private function getContribsLink( $skin ) {
 758                 $contribsPage = SpecialPage::getTitleFor( 'Contributions', $this->BlockAddress );
 759                 return $skin->link( $contribsPage, wfMsgExt( 'ipb-blocklist-contribs', 'escape', $this->BlockAddress ) );
 760         }
 761
 762         /**
 763          * Build a convenient link to unblock the given username or IP
 764          * address, if available; otherwise link to a blank unblock
 765          * form
 766          *
 767          * @param $skin Skin to use
 768          * @return string
 769          */
 770         private function getUnblockLink( $skin ) {
 771                 $list = SpecialPage::getTitleFor( 'Ipblocklist' );
 772                 $query = array( 'action' => 'unblock' );
 773
 774                 if( $this->BlockAddress ) {
 775                         $addr = strtr( $this->BlockAddress, '_', ' ' );
 776                         $message = wfMsg( 'ipb-unblock-addr', $addr );
 777                         $query['ip'] = $this->BlockAddress;
 778                 } else {
 779                         $message = wfMsg( 'ipb-unblock' );
 780                 }
 781                 return $skin->linkKnown(
 782                         $list,
 783                         htmlspecialchars( $message ),
 784                         array(),
 785                         $query
 786                 );
 787         }
 788
 789         /**
 790          * Build a convenience link to the block list
 791          *
 792          * @param $skin Skin to use
 793          * @return string
 794          */
 795         private function getBlockListLink( $skin ) {
 796                 $list = SpecialPage::getTitleFor( 'Ipblocklist' );
 797                 $query = array();
 798
 799                 if( $this->BlockAddress ) {
 800                         $addr = strtr( $this->BlockAddress, '_', ' ' );
 801                         $message = wfMsg( 'ipb-blocklist-addr', $addr );
 802                         $query['ip'] = $this->BlockAddress;
 803                 } else {
 804                         $message = wfMsg( 'ipb-blocklist' );
 805                 }
 806
 807                 return $skin->linkKnown(
 808                         $list,
 809                         htmlspecialchars( $message ),
 810                         array(),
 811                         $query
 812                 );
 813         }
 814
 815         /**
 816          * Block a list of selected users
 817          * @param array $users
 818          * @param string $reason
 819          * @param string $tag replaces user pages
 820          * @param string $talkTag replaces user talk pages
 821          * @returns array, list of html-safe usernames
 822          */
 823         public static function doMassUserBlock( $users, $reason = '', $tag = '', $talkTag = '' ) {
 824                 global $wgUser;
 825                 $counter = $blockSize = 0;
 826                 $safeUsers = array();
 827                 $log = new LogPage( 'block' );
 828                 foreach( $users as $name ) {
 829                         # Enforce limits
 830                         $counter++;
 831                         $blockSize++;
 832                         # Lets not go *too* fast
 833                         if( $blockSize >= 20 ) {
 834                                 $blockSize = 0;
 835                                 wfWaitForSlaves( 5 );
 836                         }
 837                         $u = User::newFromName( $name, false );
 838                         // If user doesn't exist, it ought to be an IP then
 839                         if( is_null( $u ) || ( !$u->getId() && !IP::isIPAddress( $u->getName() ) ) ) {
 840                                 continue;
 841                         }
 842                         $userTitle = $u->getUserPage();
 843                         $userTalkTitle = $u->getTalkPage();
 844                         $userpage = new Article( $userTitle );
 845                         $usertalk = new Article( $userTalkTitle );
 846                         $safeUsers[] = '[[' . $userTitle->getPrefixedText() . '|' . $userTitle->getText() . ']]';
 847                         $expirestr = $u->getId() ? 'indefinite' : '1 week';
 848                         $expiry = Block::parseExpiryInput( $expirestr );
 849                         $anonOnly = IP::isIPAddress( $u->getName() ) ? 1 : 0;
 850                         // Create the block
 851                         $block = new Block( $u->getName(), // victim
 852                                 $u->getId(), // uid
 853                                 $wgUser->getId(), // blocker
 854                                 $reason, // comment
 855                                 wfTimestampNow(), // block time
 856                                 0, // auto ?
 857                                 $expiry, // duration
 858                                 $anonOnly, // anononly?
 859                                 1, // block account creation?
 860                                 1, // autoblocking?
 861                                 0, // suppress name?
 862                                 0 // block from sending email?
 863                         );
 864                         $oldblock = Block::newFromDB( $u->getName(), $u->getId() );
 865                         if( !$oldblock ) {
 866                                 $block->insert();
 867                                 # Prepare log parameters
 868                                 $logParams = array();
 869                                 $logParams[] = $expirestr;
 870                                 if( $anonOnly ) {
 871                                         $logParams[] = 'anononly';
 872                                 }
 873                                 $logParams[] = 'nocreate';
 874                                 # Add log entry
 875                                 $log->addEntry( 'block', $userTitle, $reason, $logParams );
 876                         }
 877                         # Tag userpage! (check length to avoid mistakes)
 878                         if( strlen( $tag ) > 2 ) {
 879                                 $userpage->doEdit( $tag, $reason, EDIT_MINOR );
 880                         }
 881                         if( strlen( $talkTag ) > 2 ) {
 882                                 $usertalk->doEdit( $talkTag, $reason, EDIT_MINOR );
 883                         }
 884                 }
 885                 return $safeUsers;
 886         }
 887 }