includes/specials/SpecialUnblock.php

   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 doesWrites() {
  40                 return true;
  41         }
  42
  43         public function execute( $par ) {
  44                 $this->checkPermissions();
  45                 $this->checkReadOnly();
  46
  47                 list( $this->target, $this->type ) = SpecialBlock::getTargetAndType( $par, $this->getRequest() );
  48                 $this->block = Block::newFromTarget( $this->target );
  49                 if ( $this->target instanceof User ) {
  50                         # Set the 'relevant user' in the skin, so it displays links like Contributions,
  51                         # User logs, UserRights, etc.
  52                         $this->getSkin()->setRelevantUser( $this->target );
  53                 }
  54
  55                 $this->setHeaders();
  56                 $this->outputHeader();
  57
  58                 $out = $this->getOutput();
  59                 $out->setPageTitle( $this->msg( 'unblockip' ) );
  60                 $out->addModules( [ 'mediawiki.special', 'mediawiki.userSuggest' ] );
  61
  62                 $form = new HTMLForm( $this->getFields(), $this->getContext() );
  63                 $form->setWrapperLegendMsg( 'unblockip' );
  64                 $form->setSubmitCallback( [ __CLASS__, 'processUIUnblock' ] );
  65                 $form->setSubmitTextMsg( 'ipusubmit' );
  66                 $form->addPreText( $this->msg( 'unblockiptext' )->parseAsBlock() );
  67
  68                 if ( $form->show() ) {
  69                         switch ( $this->type ) {
  70                                 case Block::TYPE_IP:
  71                                         $out->addWikiMsg( 'unblocked-ip', wfEscapeWikiText( $this->target ) );
  72                                         break;
  73                                 case Block::TYPE_USER:
  74                                         $out->addWikiMsg( 'unblocked', wfEscapeWikiText( $this->target ) );
  75                                         break;
  76                                 case Block::TYPE_RANGE:
  77                                         $out->addWikiMsg( 'unblocked-range', wfEscapeWikiText( $this->target ) );
  78                                         break;
  79                                 case Block::TYPE_ID:
  80                                 case Block::TYPE_AUTO:
  81                                         $out->addWikiMsg( 'unblocked-id', wfEscapeWikiText( $this->target ) );
  82                                         break;
  83                         }
  84                 }
  85         }
  86
  87         protected function getFields() {
  88                 $fields = [
  89                         'Target' => [
  90                                 'type' => 'text',
  91                                 'label-message' => 'ipaddressorusername',
  92                                 'autofocus' => true,
  93                                 'size' => '45',
  94                                 'required' => true,
  95                                 'cssclass' => 'mw-autocomplete-user', // used by mediawiki.userSuggest
  96                         ],
  97                         'Name' => [
  98                                 'type' => 'info',
  99                                 'label-message' => 'ipaddressorusername',
 100                         ],
 101                         'Reason' => [
 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                         } else {
 118                                 $fields['Target']['default'] = $target;
 119                                 $fields['Target']['type'] = 'hidden';
 120                                 switch ( $type ) {
 121                                         case Block::TYPE_IP:
 122                                                 $fields['Name']['default'] = Linker::linkKnown(
 123                                                         SpecialPage::getTitleFor( 'Contributions', $target->getName() ),
 124                                                         $target->getName()
 125                                                 );
 126                                                 $fields['Name']['raw'] = true;
 127                                                 break;
 128                                         case Block::TYPE_USER:
 129                                                 $fields['Name']['default'] = Linker::link(
 130                                                         $target->getUserPage(),
 131                                                         $target->getName()
 132                                                 );
 133                                                 $fields['Name']['raw'] = true;
 134                                                 break;
 135
 136                                         case Block::TYPE_RANGE:
 137                                                 $fields['Name']['default'] = $target;
 138                                                 break;
 139
 140                                         case Block::TYPE_AUTO:
 141                                                 $fields['Name']['default'] = $this->block->getRedactedName();
 142                                                 $fields['Name']['raw'] = true;
 143                                                 # Don't expose the real target of the autoblock
 144                                                 $fields['Target']['default'] = "#{$this->target}";
 145                                                 break;
 146                                 }
 147                                 // target is hidden, so the reason is the first element
 148                                 $fields['Target']['autofocus'] = false;
 149                                 $fields['Reason']['autofocus'] = true;
 150                         }
 151                 } else {
 152                         $fields['Target']['default'] = $this->target;
 153                         unset( $fields['Name'] );
 154                 }
 155
 156                 return $fields;
 157         }
 158
 159         /**
 160          * Submit callback for an HTMLForm object
 161          * @param array $data
 162          * @param HTMLForm $form
 163          * @return array|bool Array(message key, parameters)
 164          */
 165         public static function processUIUnblock( array $data, HTMLForm $form ) {
 166                 return self::processUnblock( $data, $form->getContext() );
 167         }
 168
 169         /**
 170          * Process the form
 171          *
 172          * Change tags can be provided via $data['Tags'], but the calling function
 173          * must check if the tags can be added by the user prior to this function.
 174          *
 175          * @param array $data
 176          * @param IContextSource $context
 177          * @throws ErrorPageError
 178          * @return array|bool Array(message key, parameters) on failure, True on success
 179          */
 180         public static function processUnblock( array $data, IContextSource $context ) {
 181                 $performer = $context->getUser();
 182                 $target = $data['Target'];
 183                 $block = Block::newFromTarget( $data['Target'] );
 184
 185                 if ( !$block instanceof Block ) {
 186                         return [ [ 'ipb_cant_unblock', $target ] ];
 187                 }
 188
 189                 # bug 15810: blocked admins should have limited access here.  This
 190                 # won't allow sysops to remove autoblocks on themselves, but they
 191                 # should have ipblock-exempt anyway
 192                 $status = SpecialBlock::checkUnblockSelf( $target, $performer );
 193                 if ( $status !== true ) {
 194                         throw new ErrorPageError( 'badaccess', $status );
 195                 }
 196
 197                 # If the specified IP is a single address, and the block is a range block, don't
 198                 # unblock the whole range.
 199                 list( $target, $type ) = SpecialBlock::getTargetAndType( $target );
 200                 if ( $block->getType() == Block::TYPE_RANGE && $type == Block::TYPE_IP ) {
 201                         $range = $block->getTarget();
 202
 203                         return [ [ 'ipb_blocked_as_range', $target, $range ] ];
 204                 }
 205
 206                 # If the name was hidden and the blocking user cannot hide
 207                 # names, then don't allow any block removals...
 208                 if ( !$performer->isAllowed( 'hideuser' ) && $block->mHideName ) {
 209                         return [ 'unblock-hideuser' ];
 210                 }
 211
 212                 # Delete block
 213                 if ( !$block->delete() ) {
 214                         return [ 'ipb_cant_unblock', htmlspecialchars( $block->getTarget() ) ];
 215                 }
 216
 217                 # Unset _deleted fields as needed
 218                 if ( $block->mHideName ) {
 219                         # Something is deeply FUBAR if this is not a User object, but who knows?
 220                         $id = $block->getTarget() instanceof User
 221                                 ? $block->getTarget()->getId()
 222                                 : User::idFromName( $block->getTarget() );
 223
 224                         RevisionDeleteUser::unsuppressUserName( $block->getTarget(), $id );
 225                 }
 226
 227                 # Redact the name (IP address) for autoblocks
 228                 if ( $block->getType() == Block::TYPE_AUTO ) {
 229                         $page = Title::makeTitle( NS_USER, '#' . $block->getId() );
 230                 } else {
 231                         $page = $block->getTarget() instanceof User
 232                                 ? $block->getTarget()->getUserPage()
 233                                 : Title::makeTitle( NS_USER, $block->getTarget() );
 234                 }
 235
 236                 # Make log entry
 237                 $logEntry = new ManualLogEntry( 'block', 'unblock' );
 238                 $logEntry->setTarget( $page );
 239                 $logEntry->setComment( $data['Reason'] );
 240                 $logEntry->setPerformer( $performer );
 241                 if ( isset( $data['Tags'] ) ) {
 242                         $logEntry->setTags( $data['Tags'] );
 243                 }
 244                 $logId = $logEntry->insert();
 245                 $logEntry->publish( $logId );
 246
 247                 return true;
 248         }
 249
 250         /**
 251          * Return an array of subpages beginning with $search that this special page will accept.
 252          *
 253          * @param string $search Prefix to search for
 254          * @param int $limit Maximum number of results to return (usually 10)
 255          * @param int $offset Number of results to skip (usually 0)
 256          * @return string[] Matching subpages
 257          */
 258         public function prefixSearchSubpages( $search, $limit, $offset ) {
 259                 $user = User::newFromName( $search );
 260                 if ( !$user ) {
 261                         // No prefix suggestion for invalid user
 262                         return [];
 263                 }
 264                 // Autocomplete subpage as user list - public to allow caching
 265                 return UserNamePrefixSearch::search( 'public', $search, $limit, $offset );
 266         }
 267
 268         protected function getGroupName() {
 269                 return 'users';
 270         }
 271 }