includes/specials/SpecialBlockip.php

   1 <?php
   2 /**
   3  * Implements Special:Blockip
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * A special page that allows users with 'block' right to block users from
  26  * editing pages and other actions
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class IPBlockForm extends SpecialPage {
  31         var $BlockAddress, $BlockExpiry, $BlockReason, $BlockReasonList, $BlockOther, $BlockAnonOnly, $BlockCreateAccount,
  32                 $BlockEnableAutoblock, $BlockEmail, $BlockHideName, $BlockAllowUsertalk, $BlockReblock;
  33         // The maximum number of edits a user can have and still be hidden
  34         const HIDEUSER_CONTRIBLIMIT = 1000;
  35
  36         public function __construct() {
  37                 parent::__construct( 'Blockip', 'block' );
  38         }
  39
  40         public function execute( $par ) {
  41                 global $wgUser, $wgOut, $wgRequest;
  42
  43                 # Can't block when the database is locked
  44                 if( wfReadOnly() ) {
  45                         $wgOut->readOnlyPage();
  46                         return;
  47                 }
  48                 # Permission check
  49                 if( !$this->userCanExecute( $wgUser ) ) {
  50                         $wgOut->permissionRequired( 'block' );
  51                         return;
  52                 }
  53
  54                 $this->setup( $par );
  55
  56                 # bug 15810: blocked admins should have limited access here
  57                 if ( $wgUser->isBlocked() ) {
  58                         $status = IPBlockForm::checkUnblockSelf( $this->BlockAddress );
  59                         if ( $status !== true ) {
  60                                 throw new ErrorPageError( 'badaccess', $status );
  61                         }
  62                 }
  63
  64                 $action = $wgRequest->getVal( 'action' );
  65                 if( 'success' == $action ) {
  66                         $this->showSuccess();
  67                 } elseif( $wgRequest->wasPosted() && 'submit' == $action &&
  68                         $wgUser->matchEditToken( $wgRequest->getVal( 'wpEditToken' ) ) ) {
  69                         $this->doSubmit();
  70                 } else {
  71                         $this->showForm( '' );
  72                 }
  73         }
  74
  75         private function setup( $par ) {
  76                 global $wgRequest, $wgUser, $wgBlockAllowsUTEdit;
  77
  78                 $this->BlockAddress = $wgRequest->getVal( 'wpBlockAddress', $wgRequest->getVal( 'ip', $par ) );
  79                 $this->BlockAddress = strtr( $this->BlockAddress, '_', ' ' );
  80                 $this->BlockReason = $wgRequest->getText( 'wpBlockReason' );
  81                 $this->BlockReasonList = $wgRequest->getText( 'wpBlockReasonList' );
  82                 $this->BlockExpiry = $wgRequest->getVal( 'wpBlockExpiry', wfMsg( 'ipbotheroption' ) );
  83                 $this->BlockOther = $wgRequest->getVal( 'wpBlockOther', '' );
  84
  85                 # Unchecked checkboxes are not included in the form data at all, so having one
  86                 # that is true by default is a bit tricky
  87                 $byDefault = !$wgRequest->wasPosted();
  88                 $this->BlockAnonOnly = $wgRequest->getBool( 'wpAnonOnly', $byDefault );
  89                 $this->BlockCreateAccount = $wgRequest->getBool( 'wpCreateAccount', $byDefault );
  90                 $this->BlockEnableAutoblock = $wgRequest->getBool( 'wpEnableAutoblock', $byDefault );
  91                 $this->BlockEmail = false;
  92                 if( self::canBlockEmail( $wgUser ) ) {
  93                         $this->BlockEmail = $wgRequest->getBool( 'wpEmailBan', false );
  94                 }
  95                 $this->BlockWatchUser = $wgRequest->getBool( 'wpWatchUser', false ) && $wgUser->isLoggedIn();
  96                 # Re-check user's rights to hide names, very serious, defaults to null
  97                 if( $wgUser->isAllowed( 'hideuser' ) ) {
  98                         $this->BlockHideName = $wgRequest->getBool( 'wpHideName', null );
  99                 } else {
 100                         $this->BlockHideName = false;
 101                 }
 102                 $this->BlockAllowUsertalk = ( $wgRequest->getBool( 'wpAllowUsertalk', $byDefault ) && $wgBlockAllowsUTEdit );
 103                 $this->BlockReblock = $wgRequest->getBool( 'wpChangeBlock', false );
 104
 105                 $this->wasPosted = $wgRequest->wasPosted();
 106         }
 107
 108         public function showForm( $err ) {
 109                 global $wgOut, $wgUser, $wgSysopUserBans;
 110
 111                 $wgOut->setPageTitle( wfMsg( 'blockip-title' ) );
 112                 $wgOut->addWikiMsg( 'blockiptext' );
 113
 114                 if( $wgSysopUserBans ) {
 115                         $mIpaddress = Xml::label( wfMsg( 'ipadressorusername' ), 'mw-bi-target' );
 116                 } else {
 117                         $mIpaddress = Xml::label( wfMsg( 'ipaddress' ), 'mw-bi-target' );
 118                 }
 119                 $mIpbexpiry = Xml::label( wfMsg( 'ipbexpiry' ), 'wpBlockExpiry' );
 120                 $mIpbother = Xml::label( wfMsg( 'ipbother' ), 'mw-bi-other' );
 121                 $mIpbreasonother = Xml::label( wfMsg( 'ipbreason' ), 'wpBlockReasonList' );
 122                 $mIpbreason = Xml::label( wfMsg( 'ipbotherreason' ), 'mw-bi-reason' );
 123
 124                 $titleObj = SpecialPage::getTitleFor( 'Blockip' );
 125                 $user = User::newFromName( $this->BlockAddress );
 126                 if ( is_object( $user ) || User::isIP( $this->BlockAddress ) ) {
 127                         $wgUser->getSkin()->setRelevantUser( is_object($user) ? $user : User::newFromName( $this->BlockAddress, false ) );
 128                 }
 129
 130                 $alreadyBlocked = false;
 131                 $otherBlockedMsgs = array();
 132                 if( $err && $err[0] != 'ipb_already_blocked' ) {
 133                         $key = array_shift( $err );
 134                         $msg = wfMsgReal( $key, $err );
 135                         $wgOut->setSubtitle( wfMsgHtml( 'formerror' ) );
 136                         $wgOut->addHTML( Xml::tags( 'p', array( 'class' => 'error' ), $msg ) );
 137                 } elseif( $this->BlockAddress !== null ) {
 138                         # Get other blocks, i.e. from GlobalBlocking or TorBlock extension
 139                         wfRunHooks( 'OtherBlockLogLink', array( &$otherBlockedMsgs, $this->BlockAddress ) );
 140
 141                         $userId = is_object( $user ) ? $user->getId() : 0;
 142                         $currentBlock = Block::newFromDB( $this->BlockAddress, $userId );
 143                         if( !is_null( $currentBlock ) && !$currentBlock->mAuto && # The block exists and isn't an autoblock
 144                                 ( $currentBlock->mRangeStart == $currentBlock->mRangeEnd || # The block isn't a rangeblock
 145                                 # or if it is, the range is what we're about to block
 146                                 ( $currentBlock->mAddress == $this->BlockAddress ) )
 147                         ) {
 148                                 $alreadyBlocked = true;
 149                                 # Set the block form settings to the existing block
 150                                 if( !$this->wasPosted ) {
 151                                         $this->BlockAnonOnly = $currentBlock->mAnonOnly;
 152                                         $this->BlockCreateAccount = $currentBlock->mCreateAccount;
 153                                         $this->BlockEnableAutoblock = $currentBlock->mEnableAutoblock;
 154                                         $this->BlockEmail = $currentBlock->mBlockEmail;
 155                                         $this->BlockHideName = $currentBlock->mHideName;
 156                                         $this->BlockAllowUsertalk = $currentBlock->mAllowUsertalk;
 157                                         if( $currentBlock->mExpiry == 'infinity' ) {
 158                                                 $this->BlockOther = 'indefinite';
 159                                         } else {
 160                                                 $this->BlockOther = wfTimestamp( TS_ISO_8601, $currentBlock->mExpiry );
 161                                         }
 162                                         $this->BlockReason = $currentBlock->mReason;
 163                                 }
 164                         }
 165                 }
 166
 167                 # Show other blocks from extensions, i.e. GlockBlocking and TorBlock
 168                 if( count( $otherBlockedMsgs ) ) {
 169                         $wgOut->addHTML(
 170                                 Html::rawElement( 'h2', array(), wfMsgExt( 'ipb-otherblocks-header', 'parseinline', count( $otherBlockedMsgs ) ) ) . "\n"
 171                         );
 172                         $list = '';
 173                         foreach( $otherBlockedMsgs as $link ) {
 174                                 $list .= Html::rawElement( 'li', array(), $link ) . "\n";
 175                         }
 176                         $wgOut->addHTML( Html::rawElement( 'ul', array( 'class' => 'mw-blockip-alreadyblocked' ), $list ) . "\n" );
 177                 }
 178
 179                 # Username/IP is blocked already locally
 180                 if( $alreadyBlocked ) {
 181                         $wgOut->wrapWikiMsg( "<div class='mw-ipb-needreblock'>\n$1\n</div>", array( 'ipb-needreblock', $this->BlockAddress ) );
 182                 }
 183
 184                 $scBlockExpiryOptions = wfMsgForContent( 'ipboptions' );
 185
 186                 $showblockoptions = $scBlockExpiryOptions != '-';
 187                 if( !$showblockoptions ) $mIpbother = $mIpbexpiry;
 188
 189                 $blockExpiryFormOptions = Xml::option( wfMsg( 'ipbotheroption' ), 'other' );
 190                 foreach( explode( ',', $scBlockExpiryOptions ) as $option ) {
 191                         if( strpos( $option, ':' ) === false ) $option = "$option:$option";
 192                         list( $show, $value ) = explode( ':', $option );
 193                         $show = htmlspecialchars( $show );
 194                         $value = htmlspecialchars( $value );
 195                         $blockExpiryFormOptions .= Xml::option( $show, $value, $this->BlockExpiry === $value ) . "\n";
 196                 }
 197
 198                 $reasonDropDown = Xml::listDropDown( 'wpBlockReasonList',
 199                         wfMsgForContent( 'ipbreason-dropdown' ),
 200                         wfMsgForContent( 'ipbreasonotherlist' ), $this->BlockReasonList, 'wpBlockDropDown', 4 );
 201
 202                 $wgOut->addModules( 'mediawiki.legacy.block' );
 203                 $wgOut->addHTML(
 204                         Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL( 'action=submit' ), 'id' => 'blockip' ) ) .
 205                         Xml::openElement( 'fieldset' ) .
 206                         Xml::element( 'legend', null, wfMsg( 'blockip-legend' ) ) .
 207                         Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-blockip-table' ) ) .
 208                         "<tr>
 209                                 <td class='mw-label'>
 210                                         {$mIpaddress}
 211                                 </td>
 212                                 <td class='mw-input'>" .
 213                                         Html::input( 'wpBlockAddress', $this->BlockAddress, 'text', array(
 214                                                 'tabindex' => '1',
 215                                                 'id' => 'mw-bi-target',
 216                                                 'onchange' => 'updateBlockOptions()',
 217                                                 'size' => '45',
 218                                                 'required' => ''
 219                                         ) + ( $this->BlockAddress ? array() : array( 'autofocus' ) ) ). "
 220                                 </td>
 221                         </tr>
 222                         <tr>"
 223                 );
 224                 if( $showblockoptions ) {
 225                         $wgOut->addHTML("
 226                                 <td class='mw-label'>
 227                                         {$mIpbexpiry}
 228                                 </td>
 229                                 <td class='mw-input'>" .
 230                                         Xml::tags( 'select',
 231                                                 array(
 232                                                         'id' => 'wpBlockExpiry',
 233                                                         'name' => 'wpBlockExpiry',
 234                                                         'onchange' => 'considerChangingExpiryFocus()',
 235                                                         'tabindex' => '2' ),
 236                                                 $blockExpiryFormOptions ) .
 237                                 "</td>"
 238                         );
 239                 }
 240                 $wgOut->addHTML("
 241                         </tr>
 242                         <tr id='wpBlockOther'>
 243                                 <td class='mw-label'>
 244                                         {$mIpbother}
 245                                 </td>
 246                                 <td class='mw-input'>" .
 247                                         Xml::input( 'wpBlockOther', 45, $this->BlockOther,
 248                                                 array( 'tabindex' => '3', 'id' => 'mw-bi-other' ) ) . "
 249                                 </td>
 250                         </tr>
 251                         <tr>
 252                                 <td class='mw-label'>
 253                                         {$mIpbreasonother}
 254                                 </td>
 255                                 <td class='mw-input'>
 256                                         {$reasonDropDown}
 257                                 </td>
 258                         </tr>
 259                         <tr id=\"wpBlockReason\">
 260                                 <td class='mw-label'>
 261                                         {$mIpbreason}
 262                                 </td>
 263                                 <td class='mw-input'>" .
 264                                 Html::input( 'wpBlockReason', $this->BlockReason, 'text', array(
 265                                         'tabindex' => '5',
 266                                         'id' => 'mw-bi-reason',
 267                                         'maxlength' => '200',
 268                                         'size' => '45'
 269                                 ) + ( $this->BlockAddress ? array( 'autofocus' ) : array() ) ) . "
 270                                 </td>
 271                         </tr>
 272                         <tr id='wpAnonOnlyRow'>
 273                                 <td>&#160;</td>
 274                                 <td class='mw-input'>" .
 275                                 Xml::checkLabel( wfMsg( 'ipbanononly' ),
 276                                                 'wpAnonOnly', 'wpAnonOnly', $this->BlockAnonOnly,
 277                                                 array( 'tabindex' => '6' ) ) . "
 278                                 </td>
 279                         </tr>
 280                         <tr id='wpCreateAccountRow'>
 281                                 <td>&#160;</td>
 282                                 <td class='mw-input'>" .
 283                                         Xml::checkLabel( wfMsg( 'ipbcreateaccount' ),
 284                                                 'wpCreateAccount', 'wpCreateAccount', $this->BlockCreateAccount,
 285                                                 array( 'tabindex' => '7' ) ) . "
 286                                 </td>
 287                         </tr>
 288                         <tr id='wpEnableAutoblockRow'>
 289                                 <td>&#160;</td>
 290                                 <td class='mw-input'>" .
 291                                         Xml::checkLabel( wfMsg( 'ipbenableautoblock' ),
 292                                                 'wpEnableAutoblock', 'wpEnableAutoblock', $this->BlockEnableAutoblock,
 293                                                 array( 'tabindex' => '8' ) ) . "
 294                                 </td>
 295                         </tr>"
 296                 );
 297
 298                 if( self::canBlockEmail( $wgUser ) ) {
 299                         $wgOut->addHTML("
 300                                 <tr id='wpEnableEmailBan'>
 301                                         <td>&#160;</td>
 302                                         <td class='mw-input'>" .
 303                                                 Xml::checkLabel( wfMsg( 'ipbemailban' ),
 304                                                         'wpEmailBan', 'wpEmailBan', $this->BlockEmail,
 305                                                         array( 'tabindex' => '9' ) ) . "
 306                                         </td>
 307                                 </tr>"
 308                         );
 309                 }
 310
 311                 // Allow some users to hide name from block log, blocklist and listusers
 312                 if( $wgUser->isAllowed( 'hideuser' ) ) {
 313                         $wgOut->addHTML("
 314                                 <tr id='wpEnableHideUser'>
 315                                         <td>&#160;</td>
 316                                         <td class='mw-input'><strong>" .
 317                                                 Xml::checkLabel( wfMsg( 'ipbhidename' ),
 318                                                         'wpHideName', 'wpHideName', $this->BlockHideName,
 319                                                         array( 'tabindex' => '10' )
 320                                                 ) . "
 321                                         </strong></td>
 322                                 </tr>"
 323                         );
 324                 }
 325
 326                 # Watchlist their user page? (Only if user is logged in)
 327                 if( $wgUser->isLoggedIn() ) {
 328                         $wgOut->addHTML("
 329                         <tr id='wpEnableWatchUser'>
 330                                 <td>&#160;</td>
 331                                 <td class='mw-input'>" .
 332                                         Xml::checkLabel( wfMsg( 'ipbwatchuser' ),
 333                                                 'wpWatchUser', 'wpWatchUser', $this->BlockWatchUser,
 334                                                 array( 'tabindex' => '11' ) ) . "
 335                                 </td>
 336                         </tr>"
 337                         );
 338                 }
 339
 340                 # Can we explicitly disallow the use of user_talk?
 341                 global $wgBlockAllowsUTEdit;
 342                 if( $wgBlockAllowsUTEdit ){
 343                         $wgOut->addHTML("
 344                                 <tr id='wpAllowUsertalkRow'>
 345                                         <td>&#160;</td>
 346                                         <td class='mw-input'>" .
 347                                                 Xml::checkLabel( wfMsg( 'ipballowusertalk' ),
 348                                                         'wpAllowUsertalk', 'wpAllowUsertalk', $this->BlockAllowUsertalk,
 349                                                         array( 'tabindex' => '12' ) ) . "
 350                                         </td>
 351                                 </tr>"
 352                         );
 353                 }
 354
 355                 $wgOut->addHTML("
 356                         <tr>
 357                                 <td style='padding-top: 1em'>&#160;</td>
 358                                 <td  class='mw-submit' style='padding-top: 1em'>" .
 359                                         Xml::submitButton( wfMsg( $alreadyBlocked ? 'ipb-change-block' : 'ipbsubmit' ),
 360                                                 array( 'name' => 'wpBlock', 'tabindex' => '13' )
 361                                                         + $wgUser->getSkin()->tooltipAndAccessKeyAttribs( 'blockip-block' ) ). "
 362                                 </td>
 363                         </tr>" .
 364                         Xml::closeElement( 'table' ) .
 365                         Html::hidden( 'wpEditToken', $wgUser->editToken() ) .
 366                         ( $alreadyBlocked ? Html::hidden( 'wpChangeBlock', 1 ) : "" ) .
 367                         Xml::closeElement( 'fieldset' ) .
 368                         Xml::closeElement( 'form' )
 369                 );
 370
 371                 $wgOut->addHTML( $this->getConvenienceLinks() );
 372
 373                 if( is_object( $user ) ) {
 374                         $this->showLogFragment( $wgOut, $user->getUserPage() );
 375                 } elseif( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/', $this->BlockAddress ) ) {
 376                         $this->showLogFragment( $wgOut, Title::makeTitle( NS_USER, $this->BlockAddress ) );
 377                 } 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 ) ) {
 378                         $this->showLogFragment( $wgOut, Title::makeTitle( NS_USER, $this->BlockAddress ) );
 379                 }
 380         }
 381
 382         /**
 383          * Can we do an email block?
 384          * @param $user User: the sysop wanting to make a block
 385          * @return Boolean
 386          */
 387         public static function canBlockEmail( $user ) {
 388                 global $wgEnableUserEmail, $wgSysopEmailBans;
 389                 return ( $wgEnableUserEmail && $wgSysopEmailBans && $user->isAllowed( 'blockemail' ) );
 390         }
 391
 392         /**
 393          * bug 15810: blocked admins should not be able to block/unblock
 394          * others, and probably shouldn't be able to unblock themselves
 395          * either.
 396          * @param $user User, Int or String
 397          */
 398         public static function checkUnblockSelf( $user ) {
 399                 global $wgUser;
 400                 if ( is_int( $user ) ) {
 401                         $user = User::newFromId( $user );
 402                 } elseif ( is_string( $user ) ) {
 403                         $user = User::newFromName( $user );
 404                 }
 405                 if( $user instanceof User && $user->getId() == $wgUser->getId() ) {
 406                         # User is trying to unblock themselves
 407                         if ( $wgUser->isAllowed( 'unblockself' ) ) {
 408                                 return true;
 409                         } else {
 410                                 return 'ipbnounblockself';
 411                         }
 412                 } else {
 413                         # User is trying to block/unblock someone else
 414                         return 'ipbblocked';
 415                 }
 416         }
 417
 418         /**
 419          * Backend block code.
 420          * $userID and $expiry will be filled accordingly
 421          * @return array(message key, arguments) on failure, empty array on success
 422          */
 423         function doBlock( &$userId = null, &$expiry = null ) {
 424                 global $wgUser, $wgSysopUserBans, $wgSysopRangeBans, $wgBlockAllowsUTEdit, $wgBlockCIDRLimit;
 425
 426                 $userId = 0;
 427                 # Expand valid IPv6 addresses, usernames are left as is
 428                 $this->BlockAddress = IP::sanitizeIP( $this->BlockAddress );
 429                 # isIPv4() and IPv6() are used for final validation
 430                 $rxIP4 = '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
 431                 $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}';
 432                 $rxIP = "($rxIP4|$rxIP6)";
 433
 434                 # Check for invalid specifications
 435                 if( !preg_match( "/^$rxIP$/", $this->BlockAddress ) ) {
 436                         $matches = array();
 437                         if( preg_match( "/^($rxIP4)\\/(\\d{1,2})$/", $this->BlockAddress, $matches ) ) {
 438                                 # IPv4
 439                                 if( $wgSysopRangeBans ) {
 440                                         if( !IP::isIPv4( $this->BlockAddress ) || $matches[2] > 32 ) {
 441                                                 return array( 'ip_range_invalid' );
 442                                         } elseif ( $matches[2] < $wgBlockCIDRLimit['IPv4'] ) {
 443                                                 return array( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv4'] );
 444                                         }
 445                                         $this->BlockAddress = Block::normaliseRange( $this->BlockAddress );
 446                                 } else {
 447                                         # Range block illegal
 448                                         return array( 'range_block_disabled' );
 449                                 }
 450                         } elseif( preg_match( "/^($rxIP6)\\/(\\d{1,3})$/", $this->BlockAddress, $matches ) ) {
 451                                 # IPv6
 452                                 if( $wgSysopRangeBans ) {
 453                                         if( !IP::isIPv6( $this->BlockAddress ) || $matches[2] > 128 ) {
 454                                                 return array( 'ip_range_invalid' );
 455                                         } elseif( $matches[2] < $wgBlockCIDRLimit['IPv6'] ) {
 456                                                 return array( 'ip_range_toolarge', $wgBlockCIDRLimit['IPv6'] );
 457                                         }
 458                                         $this->BlockAddress = Block::normaliseRange( $this->BlockAddress );
 459                                 } else {
 460                                         # Range block illegal
 461                                         return array('range_block_disabled');
 462                                 }
 463                         } else {
 464                                 # Username block
 465                                 if( $wgSysopUserBans ) {
 466                                         $user = User::newFromName( $this->BlockAddress );
 467                                         if( $user instanceof User && $user->getId() ) {
 468                                                 # Use canonical name
 469                                                 $userId = $user->getId();
 470                                                 $this->BlockAddress = $user->getName();
 471                                         } else {
 472                                                 return array( 'nosuchusershort', htmlspecialchars( $user ? $user->getName() : $this->BlockAddress ) );
 473                                         }
 474                                 } else {
 475                                         return array( 'badipaddress' );
 476                                 }
 477                         }
 478                 }
 479
 480                 if( $wgUser->isBlocked() && ( $wgUser->getId() !== $userId ) ) {
 481                         return array( 'cant-block-while-blocked' );
 482                 }
 483
 484                 $reasonstr = $this->BlockReasonList;
 485                 if( $reasonstr != 'other' && $this->BlockReason != '' ) {
 486                         // Entry from drop down menu + additional comment
 487                         $reasonstr .= wfMsgForContent( 'colon-separator' ) . $this->BlockReason;
 488                 } elseif( $reasonstr == 'other' ) {
 489                         $reasonstr = $this->BlockReason;
 490                 }
 491
 492                 $expirestr = $this->BlockExpiry;
 493                 if( $expirestr == 'other' )
 494                         $expirestr = $this->BlockOther;
 495
 496                 if( ( strlen( $expirestr ) == 0) || ( strlen( $expirestr ) > 50 ) ) {
 497                         return array( 'ipb_expiry_invalid' );
 498                 }
 499
 500                 if( false === ( $expiry = Block::parseExpiryInput( $expirestr ) ) ) {
 501                         // Bad expiry.
 502                         return array( 'ipb_expiry_invalid' );
 503                 }
 504
 505                 if( $this->BlockHideName ) {
 506                         // Recheck params here...
 507                         if( !$userId || !$wgUser->isAllowed('hideuser') ) {
 508                                 $this->BlockHideName = false; // IP users should not be hidden
 509                         } elseif( $expiry !== 'infinity' ) {
 510                                 // Bad expiry.
 511                                 return array( 'ipb_expiry_temp' );
 512                         } elseif( User::edits( $userId ) > self::HIDEUSER_CONTRIBLIMIT ) {
 513                                 // Typically, the user should have a handful of edits.
 514                                 // Disallow hiding users with many edits for performance.
 515                                 return array( 'ipb_hide_invalid' );
 516                         }
 517                 }
 518
 519                 # Create block object
 520                 # Note: for a user block, ipb_address is only for display purposes
 521                 $block = new Block( $this->BlockAddress, $userId, $wgUser->getId(),
 522                         $reasonstr, wfTimestampNow(), 0, $expiry, $this->BlockAnonOnly,
 523                         $this->BlockCreateAccount, $this->BlockEnableAutoblock, $this->BlockHideName,
 524                         $this->BlockEmail,
 525                         isset( $this->BlockAllowUsertalk ) ? $this->BlockAllowUsertalk : $wgBlockAllowsUTEdit
 526                 );
 527
 528                 # Should this be privately logged?
 529                 $suppressLog = (bool)$this->BlockHideName;
 530                 if( wfRunHooks( 'BlockIp', array( &$block, &$wgUser ) ) ) {
 531                         # Try to insert block. Is there a conflicting block?
 532                         if( !$block->insert() ) {
 533                                 # Show form unless the user is already aware of this...
 534                                 if( !$this->BlockReblock ) {
 535                                         return array( 'ipb_already_blocked' );
 536                                 # Otherwise, try to update the block...
 537                                 } else {
 538                                         # This returns direct blocks before autoblocks/rangeblocks, since we should
 539                                         # be sure the user is blocked by now it should work for our purposes
 540                                         $currentBlock = Block::newFromDB( $this->BlockAddress, $userId );
 541                                         if( $block->equals( $currentBlock ) ) {
 542                                                 return array( 'ipb_already_blocked' );
 543                                         }
 544                                         # If the name was hidden and the blocking user cannot hide
 545                                         # names, then don't allow any block changes...
 546                                         if( $currentBlock->mHideName && !$wgUser->isAllowed( 'hideuser' ) ) {
 547                                                 return array( 'cant-see-hidden-user' );
 548                                         }
 549                                         $currentBlock->delete();
 550                                         $block->insert();
 551                                         # If hiding/unhiding a name, this should go in the private logs
 552                                         $suppressLog = $suppressLog || (bool)$currentBlock->mHideName;
 553                                         $log_action = 'reblock';
 554                                         # Unset _deleted fields if requested
 555                                         if( $currentBlock->mHideName && !$this->BlockHideName ) {
 556                                                 self::unsuppressUserName( $this->BlockAddress, $userId );
 557                                         }
 558                                 }
 559                         } else {
 560                                 $log_action = 'block';
 561                         }
 562                         wfRunHooks( 'BlockIpComplete', array( $block, $wgUser ) );
 563
 564                         # Set *_deleted fields if requested
 565                         if( $this->BlockHideName ) {
 566                                 self::suppressUserName( $this->BlockAddress, $userId );
 567                         }
 568
 569                         # Only show watch link when this is no range block
 570                         if( $this->BlockWatchUser && $block->mRangeStart == $block->mRangeEnd ) {
 571                                 $wgUser->addWatch( Title::makeTitle( NS_USER, $this->BlockAddress ) );
 572                         }
 573
 574                         # Block constructor sanitizes certain block options on insert
 575                         $this->BlockEmail = $block->mBlockEmail;
 576                         $this->BlockEnableAutoblock = $block->mEnableAutoblock;
 577
 578                         # Prepare log parameters
 579                         $logParams = array();
 580                         $logParams[] = $expirestr;
 581                         $logParams[] = $this->blockLogFlags();
 582
 583                         # Make log entry, if the name is hidden, put it in the oversight log
 584                         $log_type = $suppressLog ? 'suppress' : 'block';
 585                         $log = new LogPage( $log_type );
 586                         $log->addEntry( $log_action, Title::makeTitle( NS_USER, $this->BlockAddress ),
 587                                 $reasonstr, $logParams );
 588
 589                         # Report to the user
 590                         return array();
 591                 } else {
 592                         return array( 'hookaborted' );
 593                 }
 594         }
 595
 596         public static function suppressUserName( $name, $userId, $dbw = null ) {
 597                 $op = '|'; // bitwise OR
 598                 return self::setUsernameBitfields( $name, $userId, $op, $dbw );
 599         }
 600
 601         public static function unsuppressUserName( $name, $userId, $dbw = null ) {
 602                 $op = '&'; // bitwise AND
 603                 return self::setUsernameBitfields( $name, $userId, $op, $dbw );
 604         }
 605
 606         private static function setUsernameBitfields( $name, $userId, $op, $dbw ) {
 607                 if( $op !== '|' && $op !== '&' ) return false; // sanity check
 608                 if( !$dbw )
 609                         $dbw = wfGetDB( DB_MASTER );
 610                 $delUser = Revision::DELETED_USER | Revision::DELETED_RESTRICTED;
 611                 $delAction = LogPage::DELETED_ACTION | Revision::DELETED_RESTRICTED;
 612                 # Normalize user name
 613                 $userTitle = Title::makeTitleSafe( NS_USER, $name );
 614                 $userDbKey = $userTitle->getDBkey();
 615                 # To suppress, we OR the current bitfields with Revision::DELETED_USER
 616                 # to put a 1 in the username *_deleted bit. To unsuppress we AND the
 617                 # current bitfields with the inverse of Revision::DELETED_USER. The
 618                 # username bit is made to 0 (x & 0 = 0), while others are unchanged (x & 1 = x).
 619                 # The same goes for the sysop-restricted *_deleted bit.
 620                 if( $op == '&' ) {
 621                         $delUser = "~{$delUser}";
 622                         $delAction = "~{$delAction}";
 623                 }
 624                 # Hide name from live edits
 625                 $dbw->update( 'revision', array( "rev_deleted = rev_deleted $op $delUser" ),
 626                         array( 'rev_user' => $userId ), __METHOD__ );
 627                 # Hide name from deleted edits
 628                 $dbw->update( 'archive', array( "ar_deleted = ar_deleted $op $delUser" ),
 629                         array( 'ar_user_text' => $name ), __METHOD__ );
 630                 # Hide name from logs
 631                 $dbw->update( 'logging', array( "log_deleted = log_deleted $op $delUser" ),
 632                         array( 'log_user' => $userId, "log_type != 'suppress'" ), __METHOD__ );
 633                 $dbw->update( 'logging', array( "log_deleted = log_deleted $op $delAction" ),
 634                         array( 'log_namespace' => NS_USER, 'log_title' => $userDbKey,
 635                                 "log_type != 'suppress'" ), __METHOD__ );
 636                 # Hide name from RC
 637                 $dbw->update( 'recentchanges', array( "rc_deleted = rc_deleted $op $delUser" ),
 638                         array( 'rc_user_text' => $name ), __METHOD__ );
 639                 $dbw->update( 'recentchanges', array( "rc_deleted = rc_deleted $op $delAction" ),
 640                         array( 'rc_namespace' => NS_USER, 'rc_title' => $userDbKey, 'rc_logid > 0' ), __METHOD__ );
 641                 # Hide name from live images
 642                 $dbw->update( 'oldimage', array( "oi_deleted = oi_deleted $op $delUser" ),
 643                         array( 'oi_user_text' => $name ), __METHOD__ );
 644                 # Hide name from deleted images
 645                 # WMF - schema change pending
 646                 # $dbw->update( 'filearchive', array( "fa_deleted = fa_deleted $op $delUser" ),
 647                 #       array( 'fa_user_text' => $name ), __METHOD__ );
 648                 # Done!
 649                 return true;
 650         }
 651
 652         /**
 653          * UI entry point for blocking
 654          * Wraps around doBlock()
 655          */
 656         public function doSubmit() {
 657                 global $wgOut;
 658                 $retval = $this->doBlock();
 659                 if( empty( $retval ) ) {
 660                         $titleObj = SpecialPage::getTitleFor( 'Blockip' );
 661                         $wgOut->redirect( $titleObj->getFullURL( 'action=success&ip=' .
 662                                 urlencode( $this->BlockAddress ) ) );
 663                         return;
 664                 }
 665                 $this->showForm( $retval );
 666         }
 667
 668         public function showSuccess() {
 669                 global $wgOut;
 670
 671                 $wgOut->setPageTitle( wfMsg( 'blockip-title' ) );
 672                 $wgOut->setSubtitle( wfMsg( 'blockipsuccesssub' ) );
 673                 $text = wfMsgExt( 'blockipsuccesstext', array( 'parse' ), $this->BlockAddress );
 674                 $wgOut->addHTML( $text );
 675         }
 676
 677         private function showLogFragment( $out, $title ) {
 678                 global $wgUser;
 679
 680                 // Used to support GENDER in 'blocklog-showlog' and 'blocklog-showsuppresslog'
 681                 $userBlocked = $title->getText();
 682
 683                 LogEventsList::showLogExtract(
 684                         $out,
 685                         'block',
 686                         $title->getPrefixedText(),
 687                         '',
 688                         array(
 689                                 'lim' => 10,
 690                                 'msgKey' => array(
 691                                         'blocklog-showlog',
 692                                         $userBlocked
 693                                 ),
 694                                 'showIfEmpty' => false
 695                         )
 696                 );
 697
 698                 // Add suppression block entries if allowed
 699                 if( $wgUser->isAllowed( 'suppressionlog' ) ) {
 700                         LogEventsList::showLogExtract( $out, 'suppress', $title->getPrefixedText(), '',
 701                                 array(
 702                                         'lim' => 10,
 703                                         'conds' => array(
 704                                                 'log_action' => array(
 705                                                         'block',
 706                                                         'reblock',
 707                                                         'unblock'
 708                                                 )
 709                                         ),
 710                                         'msgKey' => array(
 711                                                 'blocklog-showsuppresslog',
 712                                                 $userBlocked
 713                                         ),
 714                                         'showIfEmpty' => false
 715                                 )
 716                         );
 717                 }
 718         }
 719
 720         /**
 721          * Return a comma-delimited list of "flags" to be passed to the log
 722          * reader for this block, to provide more information in the logs
 723          *
 724          * @return array
 725          */
 726         private function blockLogFlags() {
 727                 global $wgBlockAllowsUTEdit;
 728                 $flags = array();
 729                 if( $this->BlockAnonOnly && IP::isIPAddress( $this->BlockAddress ) )
 730                         // when blocking a user the option 'anononly' is not available/has no effect -> do not write this into log
 731                         $flags[] = 'anononly';
 732                 if( $this->BlockCreateAccount )
 733                         $flags[] = 'nocreate';
 734                 if( !$this->BlockEnableAutoblock && !IP::isIPAddress( $this->BlockAddress ) )
 735                         // Same as anononly, this is not displayed when blocking an IP address
 736                         $flags[] = 'noautoblock';
 737                 if( $this->BlockEmail )
 738                         $flags[] = 'noemail';
 739                 if( !$this->BlockAllowUsertalk && $wgBlockAllowsUTEdit )
 740                         $flags[] = 'nousertalk';
 741                 if( $this->BlockHideName )
 742                         $flags[] = 'hiddenname';
 743                 return implode( ',', $flags );
 744         }
 745
 746         /**
 747          * Builds unblock and block list links
 748          *
 749          * @return string
 750          */
 751         private function getConvenienceLinks() {
 752                 global $wgUser, $wgLang;
 753                 $skin = $wgUser->getSkin();
 754                 if( $this->BlockAddress )
 755                         $links[] = $this->getContribsLink( $skin );
 756                 $links[] = $this->getUnblockLink( $skin );
 757                 $links[] = $this->getBlockListLink( $skin );
 758                 if ( $wgUser->isAllowed( 'editinterface' ) ) {
 759                         $title = Title::makeTitle( NS_MEDIAWIKI, 'Ipbreason-dropdown' );
 760                         $links[] = $skin->link(
 761                                 $title,
 762                                 wfMsgHtml( 'ipb-edit-dropdown' ),
 763                                 array(),
 764                                 array( 'action' => 'edit' )
 765                         );
 766                 }
 767                 return '<p class="mw-ipb-conveniencelinks">' . $wgLang->pipeList( $links ) . '</p>';
 768         }
 769
 770         /**
 771          * Build a convenient link to a user or IP's contribs
 772          * form
 773          *
 774          * @param $skin Skin to use
 775          * @return string
 776          */
 777         private function getContribsLink( $skin ) {
 778                 $contribsPage = SpecialPage::getTitleFor( 'Contributions', $this->BlockAddress );
 779                 return $skin->link( $contribsPage, wfMsgExt( 'ipb-blocklist-contribs', 'escape', $this->BlockAddress ) );
 780         }
 781
 782         /**
 783          * Build a convenient link to unblock the given username or IP
 784          * address, if available; otherwise link to a blank unblock
 785          * form
 786          *
 787          * @param $skin Skin to use
 788          * @return string
 789          */
 790         private function getUnblockLink( $skin ) {
 791                 $list = SpecialPage::getTitleFor( 'Ipblocklist' );
 792                 $query = array( 'action' => 'unblock' );
 793
 794                 if( $this->BlockAddress ) {
 795                         $addr = strtr( $this->BlockAddress, '_', ' ' );
 796                         $message = wfMsg( 'ipb-unblock-addr', $addr );
 797                         $query['ip'] = $this->BlockAddress;
 798                 } else {
 799                         $message = wfMsg( 'ipb-unblock' );
 800                 }
 801                 return $skin->linkKnown(
 802                         $list,
 803                         htmlspecialchars( $message ),
 804                         array(),
 805                         $query
 806                 );
 807         }
 808
 809         /**
 810          * Build a convenience link to the block list
 811          *
 812          * @param $skin Skin to use
 813          * @return string
 814          */
 815         private function getBlockListLink( $skin ) {
 816                 return $skin->linkKnown(
 817                         SpecialPage::getTitleFor( 'Ipblocklist' ),
 818                         wfMsg( 'ipb-blocklist' )
 819                 );
 820         }
 821
 822         /**
 823          * Block a list of selected users
 824          *
 825          * @param $users Array
 826          * @param $reason String
 827          * @param $tag String: replaces user pages
 828          * @param $talkTag String: replaces user talk pages
 829          * @return Array: list of html-safe usernames
 830          */
 831         public static function doMassUserBlock( $users, $reason = '', $tag = '', $talkTag = '' ) {
 832                 global $wgUser;
 833                 $counter = $blockSize = 0;
 834                 $safeUsers = array();
 835                 $log = new LogPage( 'block' );
 836                 foreach( $users as $name ) {
 837                         # Enforce limits
 838                         $counter++;
 839                         $blockSize++;
 840                         # Lets not go *too* fast
 841                         if( $blockSize >= 20 ) {
 842                                 $blockSize = 0;
 843                                 wfWaitForSlaves( 5 );
 844                         }
 845                         $u = User::newFromName( $name, false );
 846                         // If user doesn't exist, it ought to be an IP then
 847                         if( is_null( $u ) || ( !$u->getId() && !IP::isIPAddress( $u->getName() ) ) ) {
 848                                 continue;
 849                         }
 850                         $userTitle = $u->getUserPage();
 851                         $userTalkTitle = $u->getTalkPage();
 852                         $userpage = new Article( $userTitle );
 853                         $usertalk = new Article( $userTalkTitle );
 854                         $safeUsers[] = '[[' . $userTitle->getPrefixedText() . '|' . $userTitle->getText() . ']]';
 855                         $expirestr = $u->getId() ? 'indefinite' : '1 week';
 856                         $expiry = Block::parseExpiryInput( $expirestr );
 857                         $anonOnly = IP::isIPAddress( $u->getName() ) ? 1 : 0;
 858                         // Create the block
 859                         $block = new Block( $u->getName(), // victim
 860                                 $u->getId(), // uid
 861                                 $wgUser->getId(), // blocker
 862                                 $reason, // comment
 863                                 wfTimestampNow(), // block time
 864                                 0, // auto ?
 865                                 $expiry, // duration
 866                                 $anonOnly, // anononly?
 867                                 1, // block account creation?
 868                                 1, // autoblocking?
 869                                 0, // suppress name?
 870                                 0 // block from sending email?
 871                         );
 872                         $oldblock = Block::newFromDB( $u->getName(), $u->getId() );
 873                         if( !$oldblock ) {
 874                                 $block->insert();
 875                                 # Prepare log parameters
 876                                 $logParams = array();
 877                                 $logParams[] = $expirestr;
 878                                 if( $anonOnly ) {
 879                                         $logParams[] = 'anononly';
 880                                 }
 881                                 $logParams[] = 'nocreate';
 882                                 # Add log entry
 883                                 $log->addEntry( 'block', $userTitle, $reason, $logParams );
 884                         }
 885                         # Tag userpage! (check length to avoid mistakes)
 886                         if( strlen( $tag ) > 2 ) {
 887                                 $userpage->doEdit( $tag, $reason, EDIT_MINOR );
 888                         }
 889                         if( strlen( $talkTag ) > 2 ) {
 890                                 $usertalk->doEdit( $talkTag, $reason, EDIT_MINOR );
 891                         }
 892                 }
 893                 return $safeUsers;
 894         }
 895 }