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