includes/specials/SpecialBlockip.php

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