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         var $hash, $filename;
  33
  34         function __construct( $hash, $filename ) {
  35                 $this->hash = $hash;
  36                 $this->filename = $filename;
  37         }
  38
  39         function getName() { return 'FileDuplicateSearch'; }
  40         function isExpensive() { return false; }
  41         function isSyndicated() { return false; }
  42
  43         function linkParameters() {
  44                 return array( 'filename' => $this->filename );
  45         }
  46
  47         function getSQL() {
  48                 $dbr = wfGetDB( DB_SLAVE );
  49                 $image = $dbr->tableName( 'image' );
  50                 $hash = $dbr->addQuotes( $this->hash );
  51
  52                 return "SELECT 'FileDuplicateSearch' AS type,
  53                                 img_name AS title,
  54                                 img_sha1 AS value,
  55                                 img_user_text,
  56                                 img_timestamp
  57                         FROM $image
  58                         WHERE img_sha1 = $hash
  59                         ";
  60         }
  61
  62         function formatResult( $skin, $result ) {
  63                 global $wgContLang, $wgLang;
  64
  65                 $nt = Title::makeTitle( NS_FILE, $result->title );
  66                 $text = $wgContLang->convert( $nt->getText() );
  67                 $plink = $skin->link(
  68                         Title::newFromText( $nt->getPrefixedText() ),
  69                         $text
  70                 );
  71
  72                 $user = $skin->link( Title::makeTitle( NS_USER, $result->img_user_text ), $result->img_user_text );
  73                 $time = $wgLang->timeanddate( $result->img_timestamp );
  74
  75                 return "$plink . . $user . . $time";
  76         }
  77 }
  78
  79 /**
  80  * Output the HTML search form, and constructs the FileDuplicateSearch object.
  81  */
  82 function wfSpecialFileDuplicateSearch( $par = null ) {
  83         global $wgRequest, $wgOut, $wgLang, $wgContLang, $wgScript;
  84
  85         $hash = '';
  86         $filename =  isset( $par ) ?  $par : $wgRequest->getText( 'filename' );
  87
  88         $title = Title::newFromText( $filename );
  89         if( $title && $title->getText() != '' ) {
  90                 $dbr = wfGetDB( DB_SLAVE );
  91                 $image = $dbr->tableName( 'image' );
  92                 $encFilename = $dbr->addQuotes( htmlspecialchars( $title->getDBkey() ) );
  93                 $sql = "SELECT img_sha1 from $image where img_name = $encFilename";
  94                 $res = $dbr->query( $sql );
  95                 $row = $dbr->fetchRow( $res );
  96                 if( $row !== false ) {
  97                         $hash = $row[0];
  98                 }
  99         }
 100
 101         # Create the input form
 102         $wgOut->addHTML(
 103                 Xml::openElement( 'form', array( 'id' => 'fileduplicatesearch', 'method' => 'get', 'action' => $wgScript ) ) .
 104                 Html::hidden( 'title', SpecialPage::getTitleFor( 'FileDuplicateSearch' )->getPrefixedDbKey() ) .
 105                 Xml::openElement( 'fieldset' ) .
 106                 Xml::element( 'legend', null, wfMsg( 'fileduplicatesearch-legend' ) ) .
 107                 Xml::inputLabel( wfMsg( 'fileduplicatesearch-filename' ), 'filename', 'filename', 50, $filename ) . ' ' .
 108                 Xml::submitButton( wfMsg( 'fileduplicatesearch-submit' ) ) .
 109                 Xml::closeElement( 'fieldset' ) .
 110                 Xml::closeElement( 'form' )
 111         );
 112
 113         if( $hash != '' ) {
 114                 $align = $wgContLang->alignEnd();
 115
 116                 # Show a thumbnail of the file
 117                 $img = wfFindFile( $title );
 118                 if ( $img ) {
 119                         $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 120                         if( $thumb ) {
 121                                 $wgOut->addHTML( '<div style="float:' . $align . '" id="mw-fileduplicatesearch-icon">' .
 122                                         $thumb->toHtml( array( 'desc-link' => false ) ) . '<br />' .
 123                                         wfMsgExt( 'fileduplicatesearch-info', array( 'parse' ),
 124                                                 $wgLang->formatNum( $img->getWidth() ),
 125                                                 $wgLang->formatNum( $img->getHeight() ),
 126                                                 $wgLang->formatSize( $img->getSize() ),
 127                                                 $img->getMimeType()
 128                                         ) .
 129                                         '</div>' );
 130                         }
 131                 }
 132
 133                 # Do the query
 134                 $wpp = new FileDuplicateSearchPage( $hash, $filename );
 135                 list( $limit, $offset ) = wfCheckLimits();
 136                 $count = $wpp->doQuery( $offset, $limit );
 137
 138                 # Show a short summary
 139                 if( $count == 1 ) {
 140                         $wgOut->wrapWikiMsg(
 141                                 "<p class='mw-fileduplicatesearch-result-1'>\n$1\n</p>",
 142                                 array( 'fileduplicatesearch-result-1', $filename )
 143                         );
 144                 } elseif ( $count > 1 ) {
 145                         $wgOut->wrapWikiMsg(
 146                                 "<p class='mw-fileduplicatesearch-result-n'>\n$1\n</p>",
 147                                 array( 'fileduplicatesearch-result-n', $filename, $wgLang->formatNum( $count - 1 ) )
 148                         );
 149                 }
 150         }
 151 }