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                 // Allow some users to hide name from block log, blocklist and listusers
 231                 if ( $wgUser->isAllowed( 'hideuser' ) ) {
 232                         $wgOut->addHTML("
 233                         <tr>
 234                         <td>&nbsp;</td>
 235                                 <td>
 236                                         " . wfCheckLabel( wfMsgHtml( 'ipbhidename' ),
 237                                                         'wpHideName', 'wpHideName', $this->BlockHideName,
 238                                                                 array( 'tabindex' => '9' ) ) . "
 239                                 </td>
 240                         </tr>
 241                         ");
 242                 }
 243
 244                 global $wgSysopEmailBans;
 245
 246                 if ( $wgSysopEmailBans && $wgUser->isAllowed( 'blockemail' ) ) {
 247                         $wgOut->addHTML("
 248                         <tr id='wpEnableEmailBan'>
 249                         <td>&nbsp;</td>
 250                                 <td>
 251                                         " . wfCheckLabel( wfMsgHtml( 'ipbemailban' ),
 252                                                         'wpEmailBan', 'wpEmailBan', $this->BlockEmail,
 253                                                                 array( 'tabindex' => '10' )) . "
 254                                 </td>
 255                         </tr>
 256                         ");
 257                 }
 258                 $wgOut->addHTML("
 259                 <tr>
 260                         <td style='padding-top: 1em'>&nbsp;</td>
 261                         <td style='padding-top: 1em'>
 262                                 " . Xml::submitButton( wfMsg( 'ipbsubmit' ),
 263                                                         array( 'name' => 'wpBlock', 'tabindex' => '11' ) ) . "
 264                         </td>
 265                 </tr>
 266         </table>" .
 267         Xml::hidden( 'wpEditToken', $token ) .
 268 "</form>
 269 <script type=\"text/javascript\">updateBlockOptions()</script>
 270 \n" );
 271
 272                 $wgOut->addHtml( $this->getConvenienceLinks() );
 273
 274                 $user = User::newFromName( $this->BlockAddress );
 275                 if( is_object( $user ) ) {
 276                         $this->showLogFragment( $wgOut, $user->getUserPage() );
 277                 } elseif( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/', $this->BlockAddress ) ) {
 278                         $this->showLogFragment( $wgOut, Title::makeTitle( NS_USER, $this->BlockAddress ) );
 279                 } 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 ) ) {
 280                         $this->showLogFragment( $wgOut, Title::makeTitle( NS_USER, $this->BlockAddress ) );
 281                 }
 282         }
 283
 284         const BLOCK_SUCCESS = 0; // Success
 285         const BLOCK_RANGE_INVALID = 1; // Invalid IP range
 286         const BLOCK_RANGE_DISABLED = 2; // Sysops can't block ranges
 287         const BLOCK_NONEXISTENT_USER = 3; // No such user
 288         const BLOCK_IP_INVALID = 4; // Invalid IP address
 289         const BLOCK_EXPIRY_INVALID = 5; // Invalid expiry time
 290         const BLOCK_ALREADY_BLOCKED = 6; // User is already blocked
 291         /**
 292          * Backend block code.
 293          * $userID and $expiry will be filled accordingly
 294          * Returns one of the BLOCK_* constants
 295          */
 296         function doBlock(&$userId = null, &$expiry = null)
 297         {
 298                 global $wgUser, $wgSysopUserBans, $wgSysopRangeBans;
 299
 300                 $userId = 0;
 301                 # Expand valid IPv6 addresses, usernames are left as is
 302                 $this->BlockAddress = IP::sanitizeIP( $this->BlockAddress );
 303                 # isIPv4() and IPv6() are used for final validation
 304                 $rxIP4 = '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
 305                 $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}';
 306                 $rxIP = "($rxIP4|$rxIP6)";
 307
 308                 # Check for invalid specifications
 309                 if ( !preg_match( "/^$rxIP$/", $this->BlockAddress ) ) {
 310                         $matches = array();
 311                         if ( preg_match( "/^($rxIP4)\\/(\\d{1,2})$/", $this->BlockAddress, $matches ) ) {
 312                                 # IPv4
 313                                 if ( $wgSysopRangeBans ) {
 314                                         if ( !IP::isIPv4( $this->BlockAddress ) || $matches[2] < 16 || $matches[2] > 32 ) {
 315                                                 return self::BLOCK_RANGE_INVALID;
 316                                         }
 317                                         $this->BlockAddress = Block::normaliseRange( $this->BlockAddress );
 318                                 } else {
 319                                         # Range block illegal
 320                                         return self::BLOCK_RANGE_DISABLED;
 321                                 }
 322                         } else if ( preg_match( "/^($rxIP6)\\/(\\d{1,3})$/", $this->BlockAddress, $matches ) ) {
 323                                 # IPv6
 324                                 if ( $wgSysopRangeBans ) {
 325                                         if ( !IP::isIPv6( $this->BlockAddress ) || $matches[2] < 64 || $matches[2] > 128 ) {
 326                                                 return self::BLOCK_RANGE_INVALID;
 327                                         }
 328                                         $this->BlockAddress = Block::normaliseRange( $this->BlockAddress );
 329                                 } else {
 330                                         # Range block illegal
 331                                         return self::BLOCK_RANGE_DISABLED;
 332                                 }
 333                         } else {
 334                                 # Username block
 335                                 if ( $wgSysopUserBans ) {
 336                                         $user = User::newFromName( $this->BlockAddress );
 337                                         if( !is_null( $user ) && $user->getID() ) {
 338                                                 # Use canonical name
 339                                                 $this->BlockAddress = $user->getName();
 340                                                 $userId = $user->getID();
 341                                         } else {
 342                                                 return self::BLOCK_NONEXISTENT_USER;
 343                                         }
 344                                 } else {
 345                                         return self::BLOCK_IP_INVALID;
 346                                 }
 347                         }
 348                 }
 349
 350                 $reasonstr = $this->BlockReasonList;
 351                 if ( $reasonstr != 'other' && $this->BlockReason != '') {
 352                         // Entry from drop down menu + additional comment
 353                         $reasonstr .= ': ' . $this->BlockReason;
 354                 } elseif ( $reasonstr == 'other' ) {
 355                         $reasonstr = $this->BlockReason;
 356                 }
 357
 358                 $expirestr = $this->BlockExpiry;
 359                 if( $expirestr == 'other' )
 360                         $expirestr = $this->BlockOther;
 361
 362                 if (strlen($expirestr) == 0) {
 363                         return self::BLOCK_EXPIRY_INVALID;
 364                 }
 365
 366                 if ( $expirestr == 'infinite' || $expirestr == 'indefinite' ) {
 367                         $expiry = Block::infinity();
 368                 } else {
 369                         # Convert GNU-style date, on error returns -1 for PHP <5.1 and false for PHP >=5.1
 370                         $expiry = strtotime( $expirestr );
 371
 372                         if ( $expiry < 0 || $expiry === false ) {
 373                                 return self::BLOCK_EXPIRY_INVALID;
 374                         }
 375
 376                         $expiry = wfTimestamp( TS_MW, $expiry );
 377                 }
 378
 379                 # Create block
 380                 # Note: for a user block, ipb_address is only for display purposes
 381                 $block = new Block( $this->BlockAddress, $userId, $wgUser->getID(),
 382                         $reasonstr, wfTimestampNow(), 0, $expiry, $this->BlockAnonOnly,
 383                         $this->BlockCreateAccount, $this->BlockEnableAutoblock, $this->BlockHideName,
 384                         $this->BlockEmail);
 385
 386                 if (wfRunHooks('BlockIp', array(&$block, &$wgUser))) {
 387
 388                         if ( !$block->insert() ) {
 389                                 return self::BLOCK_ALREADY_BLOCKED;
 390                         }
 391
 392                         wfRunHooks('BlockIpComplete', array($block, $wgUser));
 393
 394                         # Prepare log parameters
 395                         $logParams = array();
 396                         $logParams[] = $expirestr;
 397                         $logParams[] = $this->blockLogFlags();
 398
 399                         # Make log entry, if the name is hidden, put it in the oversight log
 400                         $log_type = ($this->BlockHideName) ? 'oversight' : 'block';
 401                         $log = new LogPage( $log_type );
 402                         $log->addEntry( 'block', Title::makeTitle( NS_USER, $this->BlockAddress ),
 403                           $reasonstr, $logParams );
 404
 405                         # Report to the user
 406                         return self::BLOCK_SUCCESS;
 407                 }
 408         }
 409
 410         /**
 411          * UI entry point for blocking
 412          * Wraps around doBlock()
 413          */
 414         function doSubmit()
 415         {
 416                 global $wgOut;
 417                 $retval = $this->doBlock();
 418                 switch($retval)
 419                 {
 420                         case self::BLOCK_RANGE_INVALID:
 421                                 $this->showForm( wfMsg( 'ip_range_invalid' ) );
 422                                 return;
 423                         case self::BLOCK_RANGE_DISABLED:
 424                                 $this->showForm( wfMsg( 'range_block_disabled' ) );
 425                                 return;
 426                         case self::BLOCK_NONEXISTENT_USER:
 427                                 $this->showForm( wfMsg( 'nosuchusershort', htmlspecialchars( $this->BlockAddress ) ) );
 428                                 return;
 429                         case self::BLOCK_IP_INVALID:
 430                                 $this->showForm( wfMsg( 'badipaddress' ) );
 431                                 return;
 432                         case self::BLOCK_EXPIRY_INVALID:
 433                                 $this->showForm( wfMsg( 'ipb_expiry_invalid' ) );
 434                                 return;
 435                         case self::BLOCK_ALREADY_BLOCKED:
 436                                 $this->showForm( wfMsg( 'ipb_already_blocked', htmlspecialchars( $this->BlockAddress ) ) );
 437                                 return;
 438                         case self::BLOCK_SUCCESS:
 439                                 $titleObj = SpecialPage::getTitleFor( 'Blockip' );
 440                                 $wgOut->redirect( $titleObj->getFullURL( 'action=success&ip=' .
 441                                         urlencode( $this->BlockAddress ) ) );
 442                                 return;
 443                         default:
 444                                 throw new MWException( __METHOD__ . ": Unknown return value ``{$retval}''" );
 445                 }
 446         }
 447
 448         function showSuccess() {
 449                 global $wgOut;
 450
 451                 $wgOut->setPagetitle( wfMsg( 'blockip' ) );
 452                 $wgOut->setSubtitle( wfMsg( 'blockipsuccesssub' ) );
 453                 $text = wfMsg( 'blockipsuccesstext', $this->BlockAddress );
 454                 $wgOut->addWikiText( $text );
 455         }
 456
 457         function showLogFragment( $out, $title ) {
 458                 $out->addHtml( wfElement( 'h2', NULL, LogPage::logName( 'block' ) ) );
 459                 $request = new FauxRequest( array( 'page' => $title->getPrefixedText(), 'type' => 'block' ) );
 460                 $viewer = new LogViewer( new LogReader( $request ) );
 461                 $viewer->showList( $out );
 462         }
 463
 464         /**
 465          * Return a comma-delimited list of "flags" to be passed to the log
 466          * reader for this block, to provide more information in the logs
 467          *
 468          * @return array
 469          */
 470         private function blockLogFlags() {
 471                 $flags = array();
 472                 if( $this->BlockAnonOnly && IP::isIPAddress( $this->BlockAddress ) )
 473                                         // when blocking a user the option 'anononly' is not available/has no effect -> do not write this into log
 474                         $flags[] = 'anononly';
 475                 if( $this->BlockCreateAccount )
 476                         $flags[] = 'nocreate';
 477                 if( !$this->BlockEnableAutoblock )
 478                         $flags[] = 'noautoblock';
 479                 if ( $this->BlockEmail )
 480                         $flags[] = 'noemail';
 481                 return implode( ',', $flags );
 482         }
 483
 484         /**
 485          * Builds unblock and block list links
 486          *
 487          * @return string
 488          */
 489         private function getConvenienceLinks() {
 490                 global $wgUser;
 491                 $skin = $wgUser->getSkin();
 492                 $links[] = $skin->makeLink ( 'MediaWiki:ipbreason-dropdown', wfMsgHtml( 'ipb-edit-dropdown' ) );
 493                 $links[] = $this->getUnblockLink( $skin );
 494                 $links[] = $this->getBlockListLink( $skin );
 495                 return '<p class="mw-ipb-conveniencelinks">' . implode( ' | ', $links ) . '</p>';
 496         }
 497
 498         /**
 499          * Build a convenient link to unblock the given username or IP
 500          * address, if available; otherwise link to a blank unblock
 501          * form
 502          *
 503          * @param $skin Skin to use
 504          * @return string
 505          */
 506         private function getUnblockLink( $skin ) {
 507                 $list = SpecialPage::getTitleFor( 'Ipblocklist' );
 508                 if( $this->BlockAddress ) {
 509                         $addr = htmlspecialchars( strtr( $this->BlockAddress, '_', ' ' ) );
 510                         return $skin->makeKnownLinkObj( $list, wfMsgHtml( 'ipb-unblock-addr', $addr ),
 511                                 'action=unblock&ip=' . urlencode( $this->BlockAddress ) );
 512                 } else {
 513                         return $skin->makeKnownLinkObj( $list, wfMsgHtml( 'ipb-unblock' ),      'action=unblock' );
 514                 }
 515         }
 516
 517         /**
 518          * Build a convenience link to the block list
 519          *
 520          * @param $skin Skin to use
 521          * @return string
 522          */
 523         private function getBlockListLink( $skin ) {
 524                 $list = SpecialPage::getTitleFor( 'Ipblocklist' );
 525                 if( $this->BlockAddress ) {
 526                         $addr = htmlspecialchars( strtr( $this->BlockAddress, '_', ' ' ) );
 527                         return $skin->makeKnownLinkObj( $list, wfMsgHtml( 'ipb-blocklist-addr', $addr ),
 528                                 'ip=' . urlencode( $this->BlockAddress ) );
 529                 } else {
 530                         return $skin->makeKnownLinkObj( $list, wfMsgHtml( 'ipb-blocklist' ) );
 531                 }
 532         }
 533 }
 534