includes/specials/SpecialFileDuplicateSearch.php

   1 <?php
   2 /**
   3  * Implements Special:FileDuplicateSearch
   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  * @author Raimond Spekking, based on Special:MIMESearch by Ævar Arnfjörð Bjarmason
  23  */
  24
  25 /**
  26  * Searches the database for files of the requested hash, comparing this with the
  27  * 'img_sha1' field in the image table.
  28  *
  29  * @ingroup SpecialPage
  30  */
  31 class FileDuplicateSearchPage extends QueryPage {
  32         protected $hash = '', $filename = '';
  33
  34         /**
  35          * @var File $file selected reference file, if present
  36          */
  37         protected $file = null;
  38
  39         function __construct( $name = 'FileDuplicateSearch' ) {
  40                 parent::__construct( $name );
  41         }
  42
  43         function isSyndicated() {
  44                 return false;
  45         }
  46
  47         function isCacheable() {
  48                 return false;
  49         }
  50
  51         function isCached() {
  52                 return false;
  53         }
  54
  55         function linkParameters() {
  56                 return array( 'filename' => $this->filename );
  57         }
  58
  59         /**
  60          * Fetch dupes from all connected file repositories.
  61          *
  62          * @return array of File objects
  63          */
  64         function getDupes() {
  65                 return RepoGroup::singleton()->findBySha1( $this->hash );
  66         }
  67
  68         /**
  69          *
  70          * @param array $dupes of File objects
  71          */
  72         function showList( $dupes ) {
  73                 $html = array();
  74                 $html[] = $this->openList( 0 );
  75
  76                 foreach ( $dupes as $dupe ) {
  77                         $line = $this->formatResult( null, $dupe );
  78                         $html[] = "<li>" . $line . "</li>";
  79                 }
  80                 $html[] = $this->closeList();
  81
  82                 $this->getOutput()->addHtml( implode( "\n", $html ) );
  83         }
  84
  85         function getQueryInfo() {
  86                 return array(
  87                         'tables' => array( 'image' ),
  88                         'fields' => array(
  89                                 'title' => 'img_name',
  90                                 'value' => 'img_sha1',
  91                                 'img_user_text',
  92                                 'img_timestamp'
  93                         ),
  94                         'conds' => array( 'img_sha1' => $this->hash )
  95                 );
  96         }
  97
  98         function execute( $par ) {
  99                 global $wgScript;
 100
 101                 $this->setHeaders();
 102                 $this->outputHeader();
 103
 104                 $this->filename = isset( $par ) ? $par : $this->getRequest()->getText( 'filename' );
 105                 $this->file = null;
 106                 $this->hash = '';
 107                 $title = Title::newFromText( $this->filename, NS_FILE );
 108                 if ( $title && $title->getText() != '' ) {
 109                         $this->file = wfFindFile( $title );
 110                 }
 111
 112                 $out = $this->getOutput();
 113
 114                 # Create the input form
 115                 $out->addHTML(
 116                         Html::openElement(
 117                                 'form',
 118                                 array( 'id' => 'fileduplicatesearch', 'method' => 'get', 'action' => $wgScript )
 119                         ) . "\n" .
 120                                 Html::hidden( 'title', $this->getTitle()->getPrefixedDBkey() ) . "\n" .
 121                                 Html::openElement( 'fieldset' ) . "\n" .
 122                                 Html::element( 'legend', null, $this->msg( 'fileduplicatesearch-legend' )->text() ) . "\n" .
 123                                 Xml::inputLabel(
 124                                         $this->msg( 'fileduplicatesearch-filename' )->text(),
 125                                         'filename',
 126                                         'filename',
 127                                         50,
 128                                         $this->filename
 129                                 ) . "\n" .
 130                                 Xml::submitButton( $this->msg( 'fileduplicatesearch-submit' )->text() ) . "\n" .
 131                                 Html::closeElement( 'fieldset' ) . "\n" .
 132                                 Html::closeElement( 'form' )
 133                 );
 134
 135                 if ( $this->file ) {
 136                         $this->hash = $this->file->getSha1();
 137                 } elseif ( $this->filename !== '' ) {
 138                         $out->wrapWikiMsg(
 139                                 "<p class='mw-fileduplicatesearch-noresults'>\n$1\n</p>",
 140                                 array( 'fileduplicatesearch-noresults', wfEscapeWikiText( $this->filename ) )
 141                         );
 142                 }
 143
 144                 if ( $this->hash != '' ) {
 145                         # Show a thumbnail of the file
 146                         $img = $this->file;
 147                         if ( $img ) {
 148                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 149                                 if ( $thumb ) {
 150                                         $out->addHTML( '<div id="mw-fileduplicatesearch-icon">' .
 151                                                 $thumb->toHtml( array( 'desc-link' => false ) ) . '<br />' .
 152                                                 $this->msg( 'fileduplicatesearch-info' )->numParams(
 153                                                         $img->getWidth(), $img->getHeight() )->params(
 154                                                                 $this->getLanguage()->formatSize( $img->getSize() ),
 155                                                                 $img->getMimeType() )->parseAsBlock() .
 156                                                 '</div>' );
 157                                 }
 158                         }
 159
 160                         $dupes = $this->getDupes();
 161                         $numRows = count( $dupes );
 162
 163                         # Show a short summary
 164                         if ( $numRows == 1 ) {
 165                                 $out->wrapWikiMsg(
 166                                         "<p class='mw-fileduplicatesearch-result-1'>\n$1\n</p>",
 167                                         array( 'fileduplicatesearch-result-1', wfEscapeWikiText( $this->filename ) )
 168                                 );
 169                         } elseif ( $numRows ) {
 170                                 $out->wrapWikiMsg(
 171                                         "<p class='mw-fileduplicatesearch-result-n'>\n$1\n</p>",
 172                                         array( 'fileduplicatesearch-result-n', wfEscapeWikiText( $this->filename ),
 173                                                 $this->getLanguage()->formatNum( $numRows - 1 ) )
 174                                 );
 175                         }
 176
 177                         $this->doBatchLookups( $dupes );
 178                         $this->showList( $dupes );
 179                 }
 180         }
 181
 182         function doBatchLookups( $list ) {
 183                 $batch = new LinkBatch();
 184                 /** @var File $file */
 185                 foreach ( $list as $file ) {
 186                         $batch->addObj( $file->getTitle() );
 187                         if ( $file->isLocal() ) {
 188                                 $userName = $file->getUser( 'text' );
 189                                 $batch->add( NS_USER, $userName );
 190                                 $batch->add( NS_USER_TALK, $userName );
 191                         }
 192                 }
 193
 194                 $batch->execute();
 195         }
 196
 197         /**
 198          *
 199          * @param Skin $skin
 200          * @param File $result
 201          * @return string
 202          */
 203         function formatResult( $skin, $result ) {
 204                 global $wgContLang;
 205
 206                 $nt = $result->getTitle();
 207                 $text = $wgContLang->convert( $nt->getText() );
 208                 $plink = Linker::link(
 209                         Title::newFromText( $nt->getPrefixedText() ),
 210                         $text
 211                 );
 212
 213                 $userText = $result->getUser( 'text' );
 214                 if ( $result->isLocal() ) {
 215                         $userId = $result->getUser( 'id' );
 216                         $user = Linker::userLink( $userId, $userText );
 217                         $user .= $this->getContext()->msg( 'word-separator' )->plain();
 218                         $user .= '<span style="white-space: nowrap;">';
 219                         $user .= Linker::userToolLinks( $userId, $userText );
 220                         $user .= '</span>';
 221                 } else {
 222                         $user = htmlspecialchars( $userText );
 223                 }
 224
 225                 $time = $this->getLanguage()->userTimeAndDate( $result->getTimestamp(), $this->getUser() );
 226
 227                 return "$plink . . $user . . $time";
 228         }
 229
 230         protected function getGroupName() {
 231                 return 'media';
 232         }
 233 }