includes/specials/SpecialMIMEsearch.php

   1 <?php
   2 /**
   3  * Implements Special:MIMESearch
   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 Ævar Arnfjörð Bjarmason <avarab@gmail.com>
  23  */
  24
  25 /**
  26  * Searches the database for files of the requested MIME type, comparing this with the
  27  * 'img_major_mime' and 'img_minor_mime' fields in the image table.
  28  * @ingroup SpecialPage
  29  */
  30 class MIMEsearchPage extends QueryPage {
  31         protected $major, $minor, $mime;
  32
  33         function __construct( $name = 'MIMEsearch' ) {
  34                 parent::__construct( $name );
  35         }
  36
  37         public function isExpensive() {
  38                 return false;
  39         }
  40
  41         function isSyndicated() {
  42                 return false;
  43         }
  44
  45         function isCacheable() {
  46                 return false;
  47         }
  48
  49         function linkParameters() {
  50                 return [ 'mime' => "{$this->major}/{$this->minor}" ];
  51         }
  52
  53         public function getQueryInfo() {
  54                 $minorType = [];
  55                 if ( $this->minor !== '*' ) {
  56                         // Allow wildcard searching
  57                         $minorType['img_minor_mime'] = $this->minor;
  58                 }
  59                 $qi = [
  60                         'tables' => [ 'image' ],
  61                         'fields' => [
  62                                 'namespace' => NS_FILE,
  63                                 'title' => 'img_name',
  64                                 // Still have a value field just in case,
  65                                 // but it isn't actually used for sorting.
  66                                 'value' => 'img_name',
  67                                 'img_size',
  68                                 'img_width',
  69                                 'img_height',
  70                                 'img_user_text',
  71                                 'img_timestamp'
  72                         ],
  73                         'conds' => [
  74                                 'img_major_mime' => $this->major,
  75                                 // This is in order to trigger using
  76                                 // the img_media_mime index in "range" mode.
  77                                 'img_media_type' => [
  78                                         MEDIATYPE_BITMAP,
  79                                         MEDIATYPE_DRAWING,
  80                                         MEDIATYPE_AUDIO,
  81                                         MEDIATYPE_VIDEO,
  82                                         MEDIATYPE_MULTIMEDIA,
  83                                         MEDIATYPE_UNKNOWN,
  84                                         MEDIATYPE_OFFICE,
  85                                         MEDIATYPE_TEXT,
  86                                         MEDIATYPE_EXECUTABLE,
  87                                         MEDIATYPE_ARCHIVE,
  88                                         MEDIATYPE_3D,
  89                                 ],
  90                         ] + $minorType,
  91                 ];
  92
  93                 return $qi;
  94         }
  95
  96         /**
  97          * The index is on (img_media_type, img_major_mime, img_minor_mime)
  98          * which unfortunately doesn't have img_name at the end for sorting.
  99          * So tell db to sort it however it wishes (Its not super important
 100          * that this report gives results in a logical order). As an aditional
 101          * note, mysql seems to by default order things by img_name ASC, which
 102          * is what we ideally want, so everything works out fine anyhow.
 103          * @return array
 104          */
 105         function getOrderFields() {
 106                 return [];
 107         }
 108
 109         /**
 110          * Generate and output the form
 111          */
 112         function getPageHeader() {
 113                 $formDescriptor = [
 114                         'mime' => [
 115                                 'type' => 'combobox',
 116                                 'options' => $this->getSuggestionsForTypes(),
 117                                 'name' => 'mime',
 118                                 'label-message' => 'mimetype',
 119                                 'required' => true,
 120                                 'default' => $this->mime,
 121                         ],
 122                 ];
 123
 124                 HTMLForm::factory( 'ooui', $formDescriptor, $this->getContext() )
 125                         ->setSubmitTextMsg( 'ilsubmit' )
 126                         ->setAction( $this->getPageTitle()->getLocalURL() )
 127                         ->setMethod( 'get' )
 128                         ->prepareForm()
 129                         ->displayForm( false );
 130         }
 131
 132         protected function getSuggestionsForTypes() {
 133                 $dbr = wfGetDB( DB_REPLICA );
 134                 $lastMajor = null;
 135                 $suggestions = [];
 136                 $result = $dbr->select(
 137                         [ 'image' ],
 138                         // We ignore img_media_type, but using it in the query is needed for MySQL to choose a
 139                         // sensible execution plan
 140                         [ 'img_media_type', 'img_major_mime', 'img_minor_mime' ],
 141                         [],
 142                         __METHOD__,
 143                         [ 'GROUP BY' => [ 'img_media_type', 'img_major_mime', 'img_minor_mime' ] ]
 144                 );
 145                 foreach ( $result as $row ) {
 146                         $major = $row->img_major_mime;
 147                         $minor = $row->img_minor_mime;
 148                         $suggestions[ "$major/$minor" ] = "$major/$minor";
 149                         if ( $lastMajor === $major ) {
 150                                 // If there are at least two with the same major mime type, also include the wildcard
 151                                 $suggestions[ "$major/*" ] = "$major/*";
 152                         }
 153                         $lastMajor = $major;
 154                 }
 155                 ksort( $suggestions );
 156                 return $suggestions;
 157         }
 158
 159         public function execute( $par ) {
 160                 $this->mime = $par ? $par : $this->getRequest()->getText( 'mime' );
 161                 $this->mime = trim( $this->mime );
 162                 list( $this->major, $this->minor ) = File::splitMime( $this->mime );
 163
 164                 if ( $this->major == '' || $this->minor == '' || $this->minor == 'unknown' ||
 165                         !self::isValidType( $this->major )
 166                 ) {
 167                         $this->setHeaders();
 168                         $this->outputHeader();
 169                         $this->getPageHeader();
 170                         return;
 171                 }
 172
 173                 parent::execute( $par );
 174         }
 175
 176         /**
 177          * @param Skin $skin
 178          * @param object $result Result row
 179          * @return string
 180          */
 181         function formatResult( $skin, $result ) {
 182                 global $wgContLang;
 183
 184                 $linkRenderer = $this->getLinkRenderer();
 185                 $nt = Title::makeTitle( $result->namespace, $result->title );
 186                 $text = $wgContLang->convert( $nt->getText() );
 187                 $plink = $linkRenderer->makeLink(
 188                         Title::newFromText( $nt->getPrefixedText() ),
 189                         $text
 190                 );
 191
 192                 $download = Linker::makeMediaLinkObj( $nt, $this->msg( 'download' )->escaped() );
 193                 $download = $this->msg( 'parentheses' )->rawParams( $download )->escaped();
 194                 $lang = $this->getLanguage();
 195                 $bytes = htmlspecialchars( $lang->formatSize( $result->img_size ) );
 196                 $dimensions = $this->msg( 'widthheight' )->numParams( $result->img_width,
 197                         $result->img_height )->escaped();
 198                 $user = $linkRenderer->makeLink(
 199                         Title::makeTitle( NS_USER, $result->img_user_text ),
 200                         $result->img_user_text
 201                 );
 202
 203                 $time = $lang->userTimeAndDate( $result->img_timestamp, $this->getUser() );
 204                 $time = htmlspecialchars( $time );
 205
 206                 return "$download $plink . . $dimensions . . $bytes . . $user . . $time";
 207         }
 208
 209         /**
 210          * @param string $type
 211          * @return bool
 212          */
 213         protected static function isValidType( $type ) {
 214                 // From maintenance/tables.sql => img_major_mime
 215                 $types = [
 216                         'unknown',
 217                         'application',
 218                         'audio',
 219                         'image',
 220                         'text',
 221                         'video',
 222                         'message',
 223                         'model',
 224                         'multipart',
 225                         'chemical'
 226                 ];
 227
 228                 return in_array( $type, $types );
 229         }
 230
 231         public function preprocessResults( $db, $res ) {
 232                 $this->executeLBFromResultWrapper( $res );
 233         }
 234
 235         protected function getGroupName() {
 236                 return 'media';
 237         }
 238 }