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                 global $wgUser, $wgOut, $wgRequest;
  39
  40                 # Check permissions
  41                 if( !$wgUser->isAllowed( 'block' ) ) {
  42                         $wgOut->permissionRequired( 'block' );
  43                         return;
  44                 }
  45                 # Check for database lock
  46                 if( wfReadOnly() ) {
  47                         $wgOut->readOnlyPage();
  48                         return;
  49                 }
  50
  51                 list( $this->target, $this->type ) = SpecialBlock::getTargetAndType( $par, $wgRequest );
  52                 $this->block = Block::newFromTarget( $this->target );
  53
  54                 # bug 15810: blocked admins should have limited access here.  This won't allow sysops
  55                 # to remove autoblocks on themselves, but they should have ipblock-exempt anyway
  56                 $status = SpecialBlock::checkUnblockSelf( $this->target );
  57                 if ( $status !== true ) {
  58                         throw new ErrorPageError( 'badaccess', $status );
  59                 }
  60
  61                 $wgOut->setPageTitle( wfMsg( 'unblockip' ) );
  62                 $wgOut->addModules( 'mediawiki.special' );
  63
  64                 $form = new HTMLForm( $this->getFields() );
  65                 $form->setTitle( $this->getTitle() );
  66                 $form->setWrapperLegend( wfMsg( 'unblockip' ) );
  67                 $form->setSubmitCallback( array( __CLASS__, 'processUnblock' ) );
  68                 $form->setSubmitText( wfMsg( 'ipusubmit' ) );
  69                 $form->addPreText( wfMsgExt( 'unblockiptext', 'parse' ) );
  70
  71                 if( $form->show() ){
  72                         switch( $this->type ){
  73                                 case Block::TYPE_USER:
  74                                 case Block::TYPE_IP:
  75                                         $wgOut->addWikiMsg( 'unblocked',  $this->target );
  76                                         break;
  77                                 case Block::TYPE_RANGE:
  78                                         $wgOut->addWikiMsg( 'unblocked-range', $this->target );
  79                                         break;
  80                                 case Block::TYPE_ID:
  81                                 case Block::TYPE_AUTO:
  82                                         $wgOut->addWikiMsg( 'unblocked-id', $this->target );
  83                                         break;
  84                         }
  85                 }
  86         }
  87
  88         protected function getFields(){
  89                 $fields = array(
  90                         'Target' => array(
  91                                 'type' => 'text',
  92                                 'label-message' => 'ipadressorusername',
  93                                 'tabindex' => '1',
  94                                 'size' => '45',
  95                                 'required' => true,
  96                         ),
  97                         'Name' => array(
  98                                 'type' => 'info',
  99                                 'label-message' => 'ipadressorusername',
 100                         ),
 101                         'Reason' => array(
 102                                 'type' => 'text',
 103                                 'label-message' => 'ipbreason',
 104                         )
 105                 );
 106
 107                 if( $this->block instanceof Block ){
 108                         list( $target, $type ) = $this->block->getTargetAndType();
 109
 110                         # Autoblocks are logged as "autoblock #123 because the IP was recently used by
 111                         # User:Foo, and we've just got any block, auto or not, that applies to a target
 112                         # the user has specified.  Someone could be fishing to connect IPs to autoblocks,
 113                         # so don't show any distinction between unblocked IPs and autoblocked IPs
 114                         if( $type == Block::TYPE_AUTO && $this->type == Block::TYPE_IP ){
 115                                 $fields['Target']['default'] = $this->target;
 116                                 unset( $fields['Name'] );
 117
 118                         } else {
 119                                 global $wgUser;
 120
 121                                 $fields['Target']['default'] = $target;
 122                                 $fields['Target']['type'] = 'hidden';
 123                                 switch( $type ){
 124                                         case Block::TYPE_USER:
 125                                         case Block::TYPE_IP:
 126                                                 $skin = $wgUser->getSkin();
 127                                                 $fields['Name']['default'] = $skin->link(
 128                                                         $target->getUserPage(),
 129                                                         $target->getName()
 130                                                 );
 131                                                 $fields['Name']['raw'] = true;
 132                                                 break;
 133
 134                                         case Block::TYPE_RANGE:
 135                                                 $fields['Name']['default'] = $target;
 136                                                 break;
 137
 138                                         case Block::TYPE_AUTO:
 139                                                 $fields['Name']['default'] = $this->block->getRedactedName();
 140                                                 $fields['Name']['raw'] = true;
 141                                                 # Don't expose the real target of the autoblock
 142                                                 $fields['Target']['default'] = "#{$this->target}";
 143                                                 break;
 144                                 }
 145                         }
 146
 147                 } else {
 148                         $fields['Target']['default'] = $this->target;
 149                         unset( $fields['Name'] );
 150                 }
 151                 return $fields;
 152         }
 153
 154         /**
 155          * Process the form
 156          * @return Array( Array(message key, parameters) ) on failure, True on success
 157          */
 158         public static function processUnblock( array $data ){
 159                 global $wgUser;
 160
 161                 $target = $data['Target'];
 162                 $block = Block::newFromTarget( $data['Target'] );
 163
 164                 if( !$block instanceof Block ){
 165                         return array( array( 'ipb_cant_unblock', $target ) );
 166                 }
 167
 168                 # If the specified IP is a single address, and the block is a range block, don't
 169                 # unblock the whole range.
 170                 list( $target, $type ) = SpecialBlock::getTargetAndType( $target );
 171                 if( $block->getType() == Block::TYPE_RANGE && $type == Block::TYPE_IP ) {
 172                          $range = $block->getTarget();
 173                          return array( array( 'ipb_blocked_as_range', $target, $range ) );
 174                 }
 175
 176                 # If the name was hidden and the blocking user cannot hide
 177                 # names, then don't allow any block removals...
 178                 if( !$wgUser->isAllowed( 'hideuser' ) && $block->mHideName ) {
 179                         return array( 'unblock-hideuser' );
 180                 }
 181
 182                 # Delete block
 183                 if ( !$block->delete() ) {
 184                         return array( 'ipb_cant_unblock', htmlspecialchars( $block->getTarget() ) );
 185                 }
 186
 187                 # Unset _deleted fields as needed
 188                 if( $block->mHideName ) {
 189                         # Something is deeply FUBAR if this is not a User object, but who knows?
 190                         $id = $block->getTarget() instanceof User
 191                                 ? $block->getTarget()->getID()
 192                                 : User::idFromName( $block->getTarget() );
 193
 194                         RevisionDeleteUser::unsuppressUserName( $block->getTarget(), $id );
 195                 }
 196
 197                 # Make log entry
 198                 $log = new LogPage( 'block' );
 199                 $page = $block->getTarget() instanceof User
 200                         ? $block->getTarget()->getUserpage()
 201                         : Title::makeTitle( NS_USER, $block->getTarget() );
 202                 $log->addEntry( 'unblock', $page, $data['Reason'] );
 203
 204                 return true;
 205         }
 206 }