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 Array of File objects
  63          */
  64         function getDupes() {
  65                 return RepoGroup::singleton()->findBySha1( $this->hash );
  66         }
  67
  68         /**
  69          *
  70          * @param array $dupes Array 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                 $this->setHeaders();
 100                 $this->outputHeader();
 101
 102                 $this->filename = $par !== null ? $par : $this->getRequest()->getText( 'filename' );
 103                 $this->file = null;
 104                 $this->hash = '';
 105                 $title = Title::newFromText( $this->filename, NS_FILE );
 106                 if ( $title && $title->getText() != '' ) {
 107                         $this->file = wfFindFile( $title );
 108                 }
 109
 110                 $out = $this->getOutput();
 111
 112                 # Create the input form
 113                 $formFields = array(
 114                         'filename' => array(
 115                                 'type' => 'text',
 116                                 'name' => 'filename',
 117                                 'label-message' => 'fileduplicatesearch-filename',
 118                                 'id' => 'filename',
 119                                 'size' => 50,
 120                                 'value' => $this->filename,
 121                                 'cssclass' => 'mw-ui-input-inline'
 122                         ),
 123                 );
 124                 $hiddenFields = array(
 125                         'title' => $this->getPageTitle()->getPrefixedDBKey(),
 126                 );
 127                 $htmlForm = HTMLForm::factory( 'inline', $formFields, $this->getContext() );
 128                 $htmlForm->addHiddenFields( $hiddenFields );
 129                 $htmlForm->setAction( wfScript() );
 130                 $htmlForm->setMethod( 'get' );
 131                 $htmlForm->setSubmitProgressive();
 132                 $htmlForm->setSubmitTextMsg( $this->msg( 'fileduplicatesearch-submit' ) );
 133                 $htmlForm->setWrapperLegendMsg( 'fileduplicatesearch-legend' );
 134
 135                 // The form should be visible always, even if it was submitted (e.g. to perform another action).
 136                 // To bypass the callback validation of HTMLForm, use prepareForm() and displayForm().
 137                 $htmlForm->prepareForm()->displayForm( false );
 138
 139                 if ( $this->file ) {
 140                         $this->hash = $this->file->getSha1();
 141                 } elseif ( $this->filename !== '' ) {
 142                         $out->wrapWikiMsg(
 143                                 "<p class='mw-fileduplicatesearch-noresults'>\n$1\n</p>",
 144                                 array( 'fileduplicatesearch-noresults', wfEscapeWikiText( $this->filename ) )
 145                         );
 146                 }
 147
 148                 if ( $this->hash != '' ) {
 149                         # Show a thumbnail of the file
 150                         $img = $this->file;
 151                         if ( $img ) {
 152                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 153                                 if ( $thumb ) {
 154                                         $out->addHTML( '<div id="mw-fileduplicatesearch-icon">' .
 155                                                 $thumb->toHtml( array( 'desc-link' => false ) ) . '<br />' .
 156                                                 $this->msg( 'fileduplicatesearch-info' )->numParams(
 157                                                         $img->getWidth(), $img->getHeight() )->params(
 158                                                                 $this->getLanguage()->formatSize( $img->getSize() ),
 159                                                                 $img->getMimeType() )->parseAsBlock() .
 160                                                 '</div>' );
 161                                 }
 162                         }
 163
 164                         $dupes = $this->getDupes();
 165                         $numRows = count( $dupes );
 166
 167                         # Show a short summary
 168                         if ( $numRows == 1 ) {
 169                                 $out->wrapWikiMsg(
 170                                         "<p class='mw-fileduplicatesearch-result-1'>\n$1\n</p>",
 171                                         array( 'fileduplicatesearch-result-1', wfEscapeWikiText( $this->filename ) )
 172                                 );
 173                         } elseif ( $numRows ) {
 174                                 $out->wrapWikiMsg(
 175                                         "<p class='mw-fileduplicatesearch-result-n'>\n$1\n</p>",
 176                                         array( 'fileduplicatesearch-result-n', wfEscapeWikiText( $this->filename ),
 177                                                 $this->getLanguage()->formatNum( $numRows - 1 ) )
 178                                 );
 179                         }
 180
 181                         $this->doBatchLookups( $dupes );
 182                         $this->showList( $dupes );
 183                 }
 184         }
 185
 186         function doBatchLookups( $list ) {
 187                 $batch = new LinkBatch();
 188                 /** @var File $file */
 189                 foreach ( $list as $file ) {
 190                         $batch->addObj( $file->getTitle() );
 191                         if ( $file->isLocal() ) {
 192                                 $userName = $file->getUser( 'text' );
 193                                 $batch->add( NS_USER, $userName );
 194                                 $batch->add( NS_USER_TALK, $userName );
 195                         }
 196                 }
 197
 198                 $batch->execute();
 199         }
 200
 201         /**
 202          *
 203          * @param Skin $skin
 204          * @param File $result
 205          * @return string HTML
 206          */
 207         function formatResult( $skin, $result ) {
 208                 global $wgContLang;
 209
 210                 $nt = $result->getTitle();
 211                 $text = $wgContLang->convert( $nt->getText() );
 212                 $plink = Linker::link(
 213                         $nt,
 214                         htmlspecialchars( $text )
 215                 );
 216
 217                 $userText = $result->getUser( 'text' );
 218                 if ( $result->isLocal() ) {
 219                         $userId = $result->getUser( 'id' );
 220                         $user = Linker::userLink( $userId, $userText );
 221                         $user .= '<span style="white-space: nowrap;">';
 222                         $user .= Linker::userToolLinks( $userId, $userText );
 223                         $user .= '</span>';
 224                 } else {
 225                         $user = htmlspecialchars( $userText );
 226                 }
 227
 228                 $time = htmlspecialchars( $this->getLanguage()->userTimeAndDate(
 229                         $result->getTimestamp(), $this->getUser() ) );
 230
 231                 return "$plink . . $user . . $time";
 232         }
 233
 234         protected function getGroupName() {
 235                 return 'media';
 236         }
 237 }