includes/SpecialBlockip.php

   1 <?php
   2 /**
   3  * Constructor for Special:Blockip page
   4  *
   5  * @addtogroup SpecialPage
   6  */
   7
   8 /**
   9  * Constructor
  10  */
  11 function wfSpecialBlockip( $par ) {
  12         global $wgUser, $wgOut, $wgRequest;
  13
  14         # Can't block when the database is locked
  15         if( wfReadOnly() ) {
  16                 $wgOut->readOnlyPage();
  17                 return;
  18         }
  19
  20         # Permission check
  21         if( !$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         } else if ( $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  * @addtogroup SpecialPage
  43  */
  44 class IPBlockForm {
  45         var $BlockAddress, $BlockExpiry, $BlockReason;
  46 #       var $BlockEmail;
  47
  48         function IPBlockForm( $par ) {
  49                 global $wgRequest, $wgUser;
  50
  51                 $this->BlockAddress = $wgRequest->getVal( 'wpBlockAddress', $wgRequest->getVal( 'ip', $par ) );
  52                 $this->BlockAddress = strtr( $this->BlockAddress, '_', ' ' );
  53                 $this->BlockReason = $wgRequest->getText( 'wpBlockReason' );
  54                 $this->BlockReasonList = $wgRequest->getText( 'wpBlockReasonList' );
  55                 $this->BlockExpiry = $wgRequest->getVal( 'wpBlockExpiry', wfMsg('ipbotheroption') );
  56                 $this->BlockOther = $wgRequest->getVal( 'wpBlockOther', '' );
  57
  58                 # Unchecked checkboxes are not included in the form data at all, so having one
  59                 # that is true by default is a bit tricky
  60                 $byDefault = !$wgRequest->wasPosted();
  61                 $this->BlockAnonOnly = $wgRequest->getBool( 'wpAnonOnly', $byDefault );
  62                 $this->BlockCreateAccount = $wgRequest->getBool( 'wpCreateAccount', $byDefault );
  63                 $this->BlockEnableAutoblock = $wgRequest->getBool( 'wpEnableAutoblock', $byDefault );
  64                 $this->BlockEmail = $wgRequest->getBool( 'wpEmailBan', false );
  65                 # Re-check user's rights to hide names, very serious, defaults to 0
  66                 $this->BlockHideName = ( $wgRequest->getBool( 'wpHideName', 0 ) && $wgUser->isAllowed( 'hideuser' ) ) ? 1 : 0;
  67         }
  68
  69         function showForm( $err ) {
  70                 global $wgOut, $wgUser, $wgSysopUserBans, $wgContLang;
  71
  72                 $wgOut->setPagetitle( wfMsg( 'blockip' ) );
  73                 $wgOut->addWikiText( wfMsg( 'blockiptext' ) );
  74
  75                 if($wgSysopUserBans) {
  76                         $mIpaddress = Xml::label( wfMsg( 'ipadressorusername' ), 'mw-bi-target' );
  77                 } else {
  78                         $mIpaddress = Xml::label( wfMsg( 'ipadress' ), 'mw-bi-target' );
  79                 }
  80                 $mIpbexpiry = Xml::label( wfMsg( 'ipbexpiry' ), 'wpBlockExpiry' );
  81                 $mIpbother = Xml::label( wfMsg( 'ipbother' ), 'mw-bi-other' );
  82                 $mIpbothertime = wfMsgHtml( 'ipbotheroption' );
  83                 $mIpbreasonother = Xml::label( wfMsg( 'ipbreason' ), 'wpBlockReasonList' );
  84                 $mIpbreason = Xml::label( wfMsg( 'ipbotherreason' ), 'mw-bi-reason' );
  85                 $mIpbreasonotherlist = wfMsgHtml( 'ipbreasonotherlist' );
  86
  87                 $titleObj = SpecialPage::getTitleFor( 'Blockip' );
  88                 $action = $titleObj->escapeLocalURL( "action=submit" );
  89                 $alignRight = $wgContLang->isRtl() ? 'left' : 'right';
  90
  91                 if ( "" != $err ) {
  92                         $wgOut->setSubtitle( wfMsgHtml( 'formerror' ) );
  93                         $wgOut->addHTML( "<p class='error'>{$err}</p>\n" );
  94                 }
  95
  96                 $scBlockExpiryOptions = wfMsgForContent( 'ipboptions' );
  97
  98                 $showblockoptions = $scBlockExpiryOptions != '-';
  99                 if (!$showblockoptions)
 100                         $mIpbother = $mIpbexpiry;
 101
 102                 $blockExpiryFormOptions = "<option value=\"other\">$mIpbothertime</option>";
 103                 foreach (explode(',', $scBlockExpiryOptions) as $option) {
 104                         if ( strpos($option, ":") === false ) $option = "$option:$option";
 105                         list($show, $value) = explode(":", $option);
 106                         $show = htmlspecialchars($show);
 107                         $value = htmlspecialchars($value);
 108                         $selected = "";
 109                         if ($this->BlockExpiry === $value)
 110                                 $selected = ' selected="selected"';
 111                         $blockExpiryFormOptions .= "<option value=\"$value\"$selected>$show</option>";
 112                 }
 113
 114                 $scBlockReasonList = wfMsgForContent( 'ipbreason-dropdown' );
 115                 $blockReasonList = '';
 116                 if ( $scBlockReasonList != '' && $scBlockReasonList != '-' ) {
 117                         $blockReasonList = "<option value=\"other\">$mIpbreasonotherlist</option>";
 118                         $optgroup = "";
 119                         foreach ( explode( "\n", $scBlockReasonList ) as $option) {
 120                                 $value = trim( htmlspecialchars($option) );
 121                                 if ( $value == '' ) {
 122                                         continue;
 123                                 } elseif ( substr( $value, 0, 1) == '*' && substr( $value, 1, 1) != '*' ) {
 124                                         // A new group is starting ...
 125                                         $value = trim( substr( $value, 1 ) );
 126                                         $blockReasonList .= "$optgroup<optgroup label=\"$value\">";
 127                                         $optgroup = "</optgroup>";
 128                                 } elseif ( substr( $value, 0, 2) == '**' ) {
 129                                         // groupmember
 130                                         $selected = "";
 131                                         $value = trim( substr( $value, 2 ) );
 132                                         if ( $this->BlockReasonList === $value)
 133                                                 $selected = ' selected="selected"';
 134                                         $blockReasonList .= "<option value=\"$value\"$selected>$value</option>";
 135                                 } else {
 136                                         // groupless block reason
 137                                         $selected = "";
 138                                         if ( $this->BlockReasonList === $value)
 139                                                 $selected = ' selected="selected"';
 140                                         $blockReasonList .= "$optgroup<option value=\"$value\"$selected>$value</option>";
 141                                         $optgroup = "";
 142                                 }
 143                         }
 144                         $blockReasonList .= $optgroup;
 145                 }
 146
 147                 $token = $wgUser->editToken();
 148
 149                 global $wgStylePath, $wgStyleVersion;
 150                 $wgOut->addHTML( "
 151 <script type=\"text/javascript\" src=\"$wgStylePath/common/block.js?$wgStyleVersion\">
 152 </script>
 153 <form id=\"blockip\" method=\"post\" action=\"{$action}\">
 154         <table border='0'>
 155                 <tr>
 156                         <td align=\"$alignRight\">{$mIpaddress}</td>
 157                         <td>
 158                                 " . Xml::input( 'wpBlockAddress', 45, $this->BlockAddress,
 159                                         array(
 160                                                 'tabindex' => '1',
 161                                                 'id' => 'mw-bi-target',
 162                                                 'onchange' => 'updateBlockOptions()' ) ) . "
 163                         </td>
 164                 </tr>
 165                 <tr>");
 166                 if ($showblockoptions) {
 167                         $wgOut->addHTML("
 168                         <td align=\"$alignRight\">{$mIpbexpiry}</td>
 169                         <td>
 170                                 <select tabindex='2' id='wpBlockExpiry' name=\"wpBlockExpiry\" onchange=\"considerChangingExpiryFocus()\">
 171                                         $blockExpiryFormOptions
 172                                 </select>
 173                         </td>
 174                         ");
 175                 }
 176                 $wgOut->addHTML("
 177                 </tr>
 178                 <tr id='wpBlockOther'>
 179                         <td align=\"$alignRight\">{$mIpbother}</td>
 180                         <td>
 181                                 " . Xml::input( 'wpBlockOther', 45, $this->BlockOther,
 182                                         array( 'tabindex' => '3', 'id' => 'mw-bi-other' ) ) . "
 183                         </td>
 184                 </tr>");
 185                 if ( $blockReasonList != '' ) {
 186                         $wgOut->addHTML("
 187                         <tr>
 188                                 <td align=\"$alignRight\">{$mIpbreasonother}</td>
 189                                 <td>
 190                                         <select tabindex='4' id=\"wpBlockReasonList\" name=\"wpBlockReasonList\">
 191                                                 $blockReasonList
 192                                                 </select>
 193                                 </td>
 194                         </tr>");
 195                 }
 196                 $wgOut->addHTML("
 197                 <tr id=\"wpBlockReason\">
 198                         <td align=\"$alignRight\">{$mIpbreason}</td>
 199                         <td>
 200                                 " . Xml::input( 'wpBlockReason', 45, $this->BlockReason,
 201                                         array( 'tabindex' => '5', 'id' => 'mw-bi-reason',
 202                                                'maxlength'=> '200' ) ) . "
 203                         </td>
 204                 </tr>
 205                 <tr id='wpAnonOnlyRow'>
 206                         <td>&nbsp;</td>
 207                         <td>
 208                                 " . wfCheckLabel( wfMsgHtml( 'ipbanononly' ),
 209                                         'wpAnonOnly', 'wpAnonOnly', $this->BlockAnonOnly,
 210                                         array( 'tabindex' => '6' ) ) . "
 211                         </td>
 212                 </tr>
 213                 <tr id='wpCreateAccountRow'>
 214                         <td>&nbsp;</td>
 215                         <td>
 216                                 " . wfCheckLabel( wfMsgHtml( 'ipbcreateaccount' ),
 217                                         'wpCreateAccount', 'wpCreateAccount', $this->BlockCreateAccount,
 218                                         array( 'tabindex' => '7' ) ) . "
 219                         </td>
 220                 </tr>
 221                 <tr id='wpEnableAutoblockRow'>
 222                         <td>&nbsp;</td>
 223                         <td>
 224                                 " . wfCheckLabel( wfMsgHtml( 'ipbenableautoblock' ),
 225                                                 'wpEnableAutoblock', 'wpEnableAutoblock', $this->BlockEnableAutoblock,
 226                                                         array( 'tabindex' => '8' ) ) . "
 227                         </td>
 228                 </tr>
 229                 ");
 230
 231                 global $wgSysopEmailBans;
 232                 if ( $wgSysopEmailBans && $wgUser->isAllowed( 'blockemail' ) ) {
 233                         $wgOut->addHTML("
 234                         <tr id='wpEnableEmailBan'>
 235                         <td>&nbsp;</td>
 236                                 <td>
 237                                         " . wfCheckLabel( wfMsgHtml( 'ipbemailban' ),
 238                                                         'wpEmailBan', 'wpEmailBan', $this->BlockEmail,
 239                                                                 array( 'tabindex' => '10' )) . "
 240                                 </td>
 241                         </tr>
 242                         ");
 243                 }
 244
 245                 // Allow some users to hide name from block log, blocklist and listusers
 246                 if ( $wgUser->isAllowed( 'hideuser' ) ) {
 247                         $wgOut->addHTML("
 248                         <tr id='wpEnableHideUser'>
 249                         <td>&nbsp;</td>
 250                                 <td>
 251                                         " . wfCheckLabel( wfMsgHtml( 'ipbhidename' ),
 252                                                         'wpHideName', 'wpHideName', $this->BlockHideName,
 253                                                                 array( 'tabindex' => '9' ) ) . "
 254                                 </td>
 255                         </tr>
 256                         ");
 257                 }
 258
 259                 $wgOut->addHTML("
 260                 <tr>
 261                         <td style='padding-top: 1em'>&nbsp;</td>
 262                         <td style='padding-top: 1em'>
 263                                 " . Xml::submitButton( wfMsg( 'ipbsubmit' ),
 264                                                         array( 'name' => 'wpBlock', 'tabindex' => '11' ) ) . "
 265                         </td>
 266                 </tr>
 267         </table>" .
 268         Xml::hidden( 'wpEditToken', $token ) .
 269 "</form>
 270 <script type=\"text/javascript\">updateBlockOptions()</script>
 271 \n" );
 272
 273                 $wgOut->addHtml( $this->getConvenienceLinks() );
 274
 275                 $user = User::newFromName( $this->BlockAddress );
 276                 if( is_object( $user ) ) {
 277                         $this->showLogFragment( $wgOut, $user->getUserPage() );
 278                 } elseif( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/', $this->BlockAddress ) ) {
 279                         $this->showLogFragment( $wgOut, Title::makeTitle( NS_USER, $this->BlockAddress ) );
 280                 } 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 ) ) {
 281                         $this->showLogFragment( $wgOut, Title::makeTitle( NS_USER, $this->BlockAddress ) );
 282                 }
 283         }
 284
 285         const BLOCK_SUCCESS = 0; // Success
 286         const BLOCK_RANGE_INVALID = 1; // Invalid IP range
 287         const BLOCK_RANGE_DISABLED = 2; // Sysops can't block ranges
 288         const BLOCK_NONEXISTENT_USER = 3; // No such user
 289         const BLOCK_IP_INVALID = 4; // Invalid IP address
 290         const BLOCK_EXPIRY_INVALID = 5; // Invalid expiry time
 291         const BLOCK_ALREADY_BLOCKED = 6; // User is already blocked
 292         /**
 293          * Backend block code.
 294          * $userID and $expiry will be filled accordingly
 295          * Returns one of the BLOCK_* constants
 296          */
 297         function doBlock(&$userId = null, &$expiry = null)
 298         {
 299                 global $wgUser, $wgSysopUserBans, $wgSysopRangeBans;
 300
 301                 $userId = 0;
 302                 # Expand valid IPv6 addresses, usernames are left as is
 303                 $this->BlockAddress = IP::sanitizeIP( $this->BlockAddress );
 304                 # isIPv4() and IPv6() are used for final validation
 305                 $rxIP4 = '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
 306                 $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}';
 307                 $rxIP = "($rxIP4|$rxIP6)";
 308
 309                 # Check for invalid specifications
 310                 if ( !preg_match( "/^$rxIP$/", $this->BlockAddress ) ) {
 311                         $matches = array();
 312                         if ( preg_match( "/^($rxIP4)\\/(\\d{1,2})$/", $this->BlockAddress, $matches ) ) {
 313                                 # IPv4
 314                                 if ( $wgSysopRangeBans ) {
 315                                         if ( !IP::isIPv4( $this->BlockAddress ) || $matches[2] < 16 || $matches[2] > 32 ) {
 316                                                 return self::BLOCK_RANGE_INVALID;
 317                                         }
 318                                         $this->BlockAddress = Block::normaliseRange( $this->BlockAddress );
 319                                 } else {
 320                                         # Range block illegal
 321                                         return self::BLOCK_RANGE_DISABLED;
 322                                 }
 323                         } else if ( preg_match( "/^($rxIP6)\\/(\\d{1,3})$/", $this->BlockAddress, $matches ) ) {
 324                                 # IPv6
 325                                 if ( $wgSysopRangeBans ) {
 326                                         if ( !IP::isIPv6( $this->BlockAddress ) || $matches[2] < 64 || $matches[2] > 128 ) {
 327                                                 return self::BLOCK_RANGE_INVALID;
 328                                         }
 329                                         $this->BlockAddress = Block::normaliseRange( $this->BlockAddress );
 330                                 } else {
 331                                         # Range block illegal
 332                                         return self::BLOCK_RANGE_DISABLED;
 333                                 }
 334                         } else {
 335                                 # Username block
 336                                 if ( $wgSysopUserBans ) {
 337                                         $user = User::newFromName( $this->BlockAddress );
 338                                         if( !is_null( $user ) && $user->getID() ) {
 339                                                 # Use canonical name
 340                                                 $this->BlockAddress = $user->getName();
 341                                                 $userId = $user->getID();
 342                                         } else {
 343                                                 return self::BLOCK_NONEXISTENT_USER;
 344                                         }
 345                                 } else {
 346                                         return self::BLOCK_IP_INVALID;
 347                                 }
 348                         }
 349                 }
 350
 351                 $reasonstr = $this->BlockReasonList;
 352                 if ( $reasonstr != 'other' && $this->BlockReason != '') {
 353                         // Entry from drop down menu + additional comment
 354                         $reasonstr .= ': ' . $this->BlockReason;
 355                 } elseif ( $reasonstr == 'other' ) {
 356                         $reasonstr = $this->BlockReason;
 357                 }
 358
 359                 $expirestr = $this->BlockExpiry;
 360                 if( $expirestr == 'other' )
 361                         $expirestr = $this->BlockOther;
 362
 363                 if (strlen($expirestr) == 0) {
 364                         return self::BLOCK_EXPIRY_INVALID;
 365                 }
 366
 367                 if ( $expirestr == 'infinite' || $expirestr == 'indefinite' ) {
 368                         $expiry = Block::infinity();
 369                 } else {
 370                         # Convert GNU-style date, on error returns -1 for PHP <5.1 and false for PHP >=5.1
 371                         $expiry = strtotime( $expirestr );
 372
 373                         if ( $expiry < 0 || $expiry === false ) {
 374                                 return self::BLOCK_EXPIRY_INVALID;
 375                         }
 376
 377                         $expiry = wfTimestamp( TS_MW, $expiry );
 378                 }
 379
 380                 # Create block
 381                 # Note: for a user block, ipb_address is only for display purposes
 382                 $block = new Block( $this->BlockAddress, $userId, $wgUser->getID(),
 383                         $reasonstr, wfTimestampNow(), 0, $expiry, $this->BlockAnonOnly,
 384                         $this->BlockCreateAccount, $this->BlockEnableAutoblock, $this->BlockHideName,
 385                         $this->BlockEmail);
 386
 387                 if (wfRunHooks('BlockIp', array(&$block, &$wgUser))) {
 388
 389                         if ( !$block->insert() ) {
 390                                 return self::BLOCK_ALREADY_BLOCKED;
 391                         }
 392
 393                         wfRunHooks('BlockIpComplete', array($block, $wgUser));
 394
 395                         # Prepare log parameters
 396                         $logParams = array();
 397                         $logParams[] = $expirestr;
 398                         $logParams[] = $this->blockLogFlags();
 399
 400                         # Make log entry, if the name is hidden, put it in the oversight log
 401                         $log_type = ($this->BlockHideName) ? 'oversight' : 'block';
 402                         $log = new LogPage( $log_type );
 403                         $log->addEntry( 'block', Title::makeTitle( NS_USER, $this->BlockAddress ),
 404                           $reasonstr, $logParams );
 405
 406                         # Report to the user
 407                         return self::BLOCK_SUCCESS;
 408                 }
 409         }
 410
 411         /**
 412          * UI entry point for blocking
 413          * Wraps around doBlock()
 414          */
 415         function doSubmit()
 416         {
 417                 global $wgOut;
 418                 $retval = $this->doBlock();
 419                 switch($retval)
 420                 {
 421                         case self::BLOCK_RANGE_INVALID:
 422                                 $this->showForm( wfMsg( 'ip_range_invalid' ) );
 423                                 return;
 424                         case self::BLOCK_RANGE_DISABLED:
 425                                 $this->showForm( wfMsg( 'range_block_disabled' ) );
 426                                 return;
 427                         case self::BLOCK_NONEXISTENT_USER:
 428                                 $this->showForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->BlockAddress ) ) );
 429                                 return;
 430                         case self::BLOCK_IP_INVALID:
 431                                 $this->showForm( wfMsg( 'badipaddress' ) );
 432                                 return;
 433                         case self::BLOCK_EXPIRY_INVALID:
 434                                 $this->showForm( wfMsg( 'ipb_expiry_invalid' ) );
 435                                 return;
 436                         case self::BLOCK_ALREADY_BLOCKED:
 437                                 $this->showForm( wfMsg( 'ipb_already_blocked', htmlspecialchars( $this->BlockAddress ) ) );
 438                                 return;
 439                         case self::BLOCK_SUCCESS:
 440                                 $titleObj = SpecialPage::getTitleFor( 'Blockip' );
 441                                 $wgOut->redirect( $titleObj->getFullURL( 'action=success&ip=' .
 442                                         urlencode( $this->BlockAddress ) ) );
 443                                 return;
 444                         default:
 445                                 throw new MWException( __METHOD__ . ": Unknown return value ``{$retval}''" );
 446                 }
 447         }
 448
 449         function showSuccess() {
 450                 global $wgOut;
 451
 452                 $wgOut->setPagetitle( wfMsg( 'blockip' ) );
 453                 $wgOut->setSubtitle( wfMsg( 'blockipsuccesssub' ) );
 454                 $text = wfMsg( 'blockipsuccesstext', $this->BlockAddress );
 455                 $wgOut->addWikiText( $text );
 456         }
 457
 458         function showLogFragment( $out, $title ) {
 459                 $out->addHtml( wfElement( 'h2', NULL, LogPage::logName( 'block' ) ) );
 460                 $request = new FauxRequest( array( 'page' => $title->getPrefixedText(), 'type' => 'block' ) );
 461                 $viewer = new LogViewer( new LogReader( $request ) );
 462                 $viewer->showList( $out );
 463         }
 464
 465         /**
 466          * Return a comma-delimited list of "flags" to be passed to the log
 467          * reader for this block, to provide more information in the logs
 468          *
 469          * @return array
 470          */
 471         private function blockLogFlags() {
 472                 $flags = array();
 473                 if( $this->BlockAnonOnly && IP::isIPAddress( $this->BlockAddress ) )
 474                                         // when blocking a user the option 'anononly' is not available/has no effect -> do not write this into log
 475                         $flags[] = 'anononly';
 476                 if( $this->BlockCreateAccount )
 477                         $flags[] = 'nocreate';
 478                 if( !$this->BlockEnableAutoblock )
 479                         $flags[] = 'noautoblock';
 480                 if ( $this->BlockEmail )
 481                         $flags[] = 'noemail';
 482                 return implode( ',', $flags );
 483         }
 484
 485         /**
 486          * Builds unblock and block list links
 487          *
 488          * @return string
 489          */
 490         private function getConvenienceLinks() {
 491                 global $wgUser;
 492                 $skin = $wgUser->getSkin();
 493                 $links[] = $skin->makeLink ( 'MediaWiki:ipbreason-dropdown', wfMsgHtml( 'ipb-edit-dropdown' ) );
 494                 $links[] = $this->getUnblockLink( $skin );
 495                 $links[] = $this->getBlockListLink( $skin );
 496                 return '<p class="mw-ipb-conveniencelinks">' . implode( ' | ', $links ) . '</p>';
 497         }
 498
 499         /**
 500          * Build a convenient link to unblock the given username or IP
 501          * address, if available; otherwise link to a blank unblock
 502          * form
 503          *
 504          * @param $skin Skin to use
 505          * @return string
 506          */
 507         private function getUnblockLink( $skin ) {
 508                 $list = SpecialPage::getTitleFor( 'Ipblocklist' );
 509                 if( $this->BlockAddress ) {
 510                         $addr = htmlspecialchars( strtr( $this->BlockAddress, '_', ' ' ) );
 511                         return $skin->makeKnownLinkObj( $list, wfMsgHtml( 'ipb-unblock-addr', $addr ),
 512                                 'action=unblock&ip=' . urlencode( $this->BlockAddress ) );
 513                 } else {
 514                         return $skin->makeKnownLinkObj( $list, wfMsgHtml( 'ipb-unblock' ),      'action=unblock' );
 515                 }
 516         }
 517
 518         /**
 519          * Build a convenience link to the block list
 520          *
 521          * @param $skin Skin to use
 522          * @return string
 523          */
 524         private function getBlockListLink( $skin ) {
 525                 $list = SpecialPage::getTitleFor( 'Ipblocklist' );
 526                 if( $this->BlockAddress ) {
 527                         $addr = htmlspecialchars( strtr( $this->BlockAddress, '_', ' ' ) );
 528                         return $skin->makeKnownLinkObj( $list, wfMsgHtml( 'ipb-blocklist-addr', $addr ),
 529                                 'ip=' . urlencode( $this->BlockAddress ) );
 530                 } else {
 531                         return $skin->makeKnownLinkObj( $list, wfMsgHtml( 'ipb-blocklist' ) );
 532                 }
 533         }
 534 }
 535