includes/specials/SpecialUnblock.php

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