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   1  <?php
   2  /**
   3   * Implements Special:Unblock
   4   *
   5   * This program is free software; you can redistribute it and/or modify
   6   * it under the terms of the GNU General Public License as published by
   7   * the Free Software Foundation; either version 2 of the License, or
   8   * (at your option) any later version.
   9   *
  10   * This program is distributed in the hope that it will be useful,
  11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13   * GNU General Public License for more details.
  14   *
  15   * You should have received a copy of the GNU General Public License along
  16   * with this program; if not, write to the Free Software Foundation, Inc.,
  17   * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18   * http://www.gnu.org/copyleft/gpl.html
  19   *
  20   * @file
  21   * @ingroup SpecialPage
  22   */
  23  
  24  /**
  25   * A special page for unblocking users
  26   *
  27   * @ingroup SpecialPage
  28   */
  29  class SpecialUnblock extends SpecialPage {
  30  
  31      protected $target;
  32      protected $type;
  33      protected $block;
  34  
  35  	public function __construct() {
  36          parent::__construct( 'Unblock', 'block' );
  37      }
  38  
  39  	public function execute( $par ) {
  40          $this->checkPermissions();
  41          $this->checkReadOnly();
  42  
  43          list( $this->target, $this->type ) = SpecialBlock::getTargetAndType( $par, $this->getRequest() );
  44          $this->block = Block::newFromTarget( $this->target );
  45          if ( $this->target instanceof User ) {
  46              # Set the 'relevant user' in the skin, so it displays links like Contributions,
  47              # User logs, UserRights, etc.
  48              $this->getSkin()->setRelevantUser( $this->target );
  49          }
  50  
  51          $this->setHeaders();
  52          $this->outputHeader();
  53  
  54          $out = $this->getOutput();
  55          $out->setPageTitle( $this->msg( 'unblockip' ) );
  56          $out->addModules( 'mediawiki.special' );
  57  
  58          $form = new HTMLForm( $this->getFields(), $this->getContext() );
  59          $form->setWrapperLegendMsg( 'unblockip' );
  60          $form->setSubmitCallback( array( __CLASS__, 'processUIUnblock' ) );
  61          $form->setSubmitTextMsg( 'ipusubmit' );
  62          $form->addPreText( $this->msg( 'unblockiptext' )->parseAsBlock() );
  63  
  64          if ( $form->show() ) {
  65              switch ( $this->type ) {
  66                  case Block::TYPE_IP:
  67                      $out->addWikiMsg( 'unblocked-ip', wfEscapeWikiText( $this->target ) );
  68                      break;
  69                  case Block::TYPE_USER:
  70                      $out->addWikiMsg( 'unblocked', wfEscapeWikiText( $this->target ) );
  71                      break;
  72                  case Block::TYPE_RANGE:
  73                      $out->addWikiMsg( 'unblocked-range', wfEscapeWikiText( $this->target ) );
  74                      break;
  75                  case Block::TYPE_ID:
  76                  case Block::TYPE_AUTO:
  77                      $out->addWikiMsg( 'unblocked-id', wfEscapeWikiText( $this->target ) );
  78                      break;
  79              }
  80          }
  81      }
  82  
  83  	protected function getFields() {
  84          $fields = array(
  85              'Target' => array(
  86                  'type' => 'text',
  87                  'label-message' => 'ipaddressorusername',
  88                  'autofocus' => true,
  89                  'size' => '45',
  90                  'required' => true,
  91              ),
  92              'Name' => array(
  93                  'type' => 'info',
  94                  'label-message' => 'ipaddressorusername',
  95              ),
  96              'Reason' => array(
  97                  'type' => 'text',
  98                  'label-message' => 'ipbreason',
  99              )
 100          );
 101  
 102          if ( $this->block instanceof Block ) {
 103              list( $target, $type ) = $this->block->getTargetAndType();
 104  
 105              # Autoblocks are logged as "autoblock #123 because the IP was recently used by
 106              # User:Foo, and we've just got any block, auto or not, that applies to a target
 107              # the user has specified.  Someone could be fishing to connect IPs to autoblocks,
 108              # so don't show any distinction between unblocked IPs and autoblocked IPs
 109              if ( $type == Block::TYPE_AUTO && $this->type == Block::TYPE_IP ) {
 110                  $fields['Target']['default'] = $this->target;
 111                  unset( $fields['Name'] );
 112              } else {
 113                  $fields['Target']['default'] = $target;
 114                  $fields['Target']['type'] = 'hidden';
 115                  switch ( $type ) {
 116                      case Block::TYPE_IP:
 117                          $fields['Name']['default'] = Linker::linkKnown(
 118                              SpecialPage::getTitleFor( 'Contributions', $target->getName() ),
 119                              $target->getName()
 120                          );
 121                          $fields['Name']['raw'] = true;
 122                          break;
 123                      case Block::TYPE_USER:
 124                          $fields['Name']['default'] = Linker::link(
 125                              $target->getUserPage(),
 126                              $target->getName()
 127                          );
 128                          $fields['Name']['raw'] = true;
 129                          break;
 130  
 131                      case Block::TYPE_RANGE:
 132                          $fields['Name']['default'] = $target;
 133                          break;
 134  
 135                      case Block::TYPE_AUTO:
 136                          $fields['Name']['default'] = $this->block->getRedactedName();
 137                          $fields['Name']['raw'] = true;
 138                          # Don't expose the real target of the autoblock
 139                          $fields['Target']['default'] = "#{$this->target}";
 140                          break;
 141                  }
 142                  // target is hidden, so the reason is the first element
 143                  $fields['Target']['autofocus'] = false;
 144                  $fields['Reason']['autofocus'] = true;
 145              }
 146          } else {
 147              $fields['Target']['default'] = $this->target;
 148              unset( $fields['Name'] );
 149          }
 150  
 151          return $fields;
 152      }
 153  
 154      /**
 155       * Submit callback for an HTMLForm object
 156       * @param array $data
 157       * @param HTMLForm $form
 158       * @return array|bool Array(message key, parameters)
 159       */
 160  	public static function processUIUnblock( array $data, HTMLForm $form ) {
 161          return self::processUnblock( $data, $form->getContext() );
 162      }
 163  
 164      /**
 165       * Process the form
 166       *
 167       * @param array $data
 168       * @param IContextSource $context
 169       * @throws ErrorPageError
 170       * @return array|bool Array(message key, parameters) on failure, True on success
 171       */
 172  	public static function processUnblock( array $data, IContextSource $context ) {
 173          $performer = $context->getUser();
 174          $target = $data['Target'];
 175          $block = Block::newFromTarget( $data['Target'] );
 176  
 177          if ( !$block instanceof Block ) {
 178              return array( array( 'ipb_cant_unblock', $target ) );
 179          }
 180  
 181          # bug 15810: blocked admins should have limited access here.  This
 182          # won't allow sysops to remove autoblocks on themselves, but they
 183          # should have ipblock-exempt anyway
 184          $status = SpecialBlock::checkUnblockSelf( $target, $performer );
 185          if ( $status !== true ) {
 186              throw new ErrorPageError( 'badaccess', $status );
 187          }
 188  
 189          # If the specified IP is a single address, and the block is a range block, don't
 190          # unblock the whole range.
 191          list( $target, $type ) = SpecialBlock::getTargetAndType( $target );
 192          if ( $block->getType() == Block::TYPE_RANGE && $type == Block::TYPE_IP ) {
 193              $range = $block->getTarget();
 194  
 195              return array( array( 'ipb_blocked_as_range', $target, $range ) );
 196          }
 197  
 198          # If the name was hidden and the blocking user cannot hide
 199          # names, then don't allow any block removals...
 200          if ( !$performer->isAllowed( 'hideuser' ) && $block->mHideName ) {
 201              return array( 'unblock-hideuser' );
 202          }
 203  
 204          # Delete block
 205          if ( !$block->delete() ) {
 206              return array( 'ipb_cant_unblock', htmlspecialchars( $block->getTarget() ) );
 207          }
 208  
 209          # Unset _deleted fields as needed
 210          if ( $block->mHideName ) {
 211              # Something is deeply FUBAR if this is not a User object, but who knows?
 212              $id = $block->getTarget() instanceof User
 213                  ? $block->getTarget()->getID()
 214                  : User::idFromName( $block->getTarget() );
 215  
 216              RevisionDeleteUser::unsuppressUserName( $block->getTarget(), $id );
 217          }
 218  
 219          # Redact the name (IP address) for autoblocks
 220          if ( $block->getType() == Block::TYPE_AUTO ) {
 221              $page = Title::makeTitle( NS_USER, '#' . $block->getId() );
 222          } else {
 223              $page = $block->getTarget() instanceof User
 224                  ? $block->getTarget()->getUserpage()
 225                  : Title::makeTitle( NS_USER, $block->getTarget() );
 226          }
 227  
 228          # Make log entry
 229          $log = new LogPage( 'block' );
 230          $log->addEntry( 'unblock', $page, $data['Reason'], array(), $performer );
 231  
 232          return true;
 233      }
 234  
 235  	protected function getGroupName() {
 236          return 'users';
 237      }
 238  }