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   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 <[email protected]>
  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( $name );
  35      }
  36  
  37  	function isExpensive() {
  38          return false;
  39      }
  40  
  41  	function isSyndicated() {
  42          return false;
  43      }
  44  
  45  	function isCacheable() {
  46          return false;
  47      }
  48  
  49  	function linkParameters() {
  50          return array( 'mime' => "{$this->major}/{$this->minor}" );
  51      }
  52  
  53  	public function getQueryInfo() {
  54          $minorType = array();
  55          if ( $this->minor !== '*' ) {
  56              // Allow wildcard searching
  57              $minorType['img_minor_mime'] = $this->minor;
  58          }
  59          $qi = array(
  60              'tables' => array( 'image' ),
  61              'fields' => array(
  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' => array(
  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' => array(
  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                  ),
  89              ) + $minorType,
  90          );
  91  
  92          return $qi;
  93      }
  94  
  95      /**
  96       * The index is on (img_media_type, img_major_mime, img_minor_mime)
  97       * which unfortunately doesn't have img_name at the end for sorting.
  98       * So tell db to sort it however it wishes (Its not super important
  99       * that this report gives results in a logical order). As an aditional
 100       * note, mysql seems to by default order things by img_name ASC, which
 101       * is what we ideally want, so everything works out fine anyhow.
 102       * @return array
 103       */
 104  	function getOrderFields() {
 105          return array();
 106      }
 107  
 108      /**
 109       * Return HTML to put just before the results.
 110       */
 111  	function getPageHeader() {
 112  
 113          return Xml::openElement(
 114                  'form',
 115                  array( 'id' => 'specialmimesearch', 'method' => 'get', 'action' => wfScript() )
 116              ) .
 117              Xml::openElement( 'fieldset' ) .
 118              Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() ) .
 119              Xml::element( 'legend', null, $this->msg( 'mimesearch' )->text() ) .
 120              Xml::inputLabel( $this->msg( 'mimetype' )->text(), 'mime', 'mime', 20, $this->mime ) .
 121              ' ' .
 122              Xml::submitButton( $this->msg( 'ilsubmit' )->text() ) .
 123                      Xml::closeElement( 'fieldset' ) .
 124                      Xml::closeElement( 'form' );
 125      }
 126  
 127  	function execute( $par ) {
 128          $this->mime = $par ? $par : $this->getRequest()->getText( 'mime' );
 129          $this->mime = trim( $this->mime );
 130          list( $this->major, $this->minor ) = File::splitMime( $this->mime );
 131  
 132          if ( $this->major == '' || $this->minor == '' || $this->minor == 'unknown' ||
 133              !self::isValidType( $this->major )
 134          ) {
 135              $this->setHeaders();
 136              $this->outputHeader();
 137              $this->getOutput()->addHTML( $this->getPageHeader() );
 138              return;
 139          }
 140  
 141          parent::execute( $par );
 142      }
 143  
 144      /**
 145       * @param Skin $skin
 146       * @param object $result Result row
 147       * @return string
 148       */
 149  	function formatResult( $skin, $result ) {
 150          global $wgContLang;
 151  
 152          $nt = Title::makeTitle( $result->namespace, $result->title );
 153          $text = $wgContLang->convert( $nt->getText() );
 154          $plink = Linker::link(
 155              Title::newFromText( $nt->getPrefixedText() ),
 156              htmlspecialchars( $text )
 157          );
 158  
 159          $download = Linker::makeMediaLinkObj( $nt, $this->msg( 'download' )->escaped() );
 160          $download = $this->msg( 'parentheses' )->rawParams( $download )->escaped();
 161          $lang = $this->getLanguage();
 162          $bytes = htmlspecialchars( $lang->formatSize( $result->img_size ) );
 163          $dimensions = $this->msg( 'widthheight' )->numParams( $result->img_width,
 164              $result->img_height )->escaped();
 165          $user = Linker::link(
 166              Title::makeTitle( NS_USER, $result->img_user_text ),
 167              htmlspecialchars( $result->img_user_text )
 168          );
 169  
 170          $time = $lang->userTimeAndDate( $result->img_timestamp, $this->getUser() );
 171          $time = htmlspecialchars( $time );
 172  
 173          return "$download $plink . . $dimensions . . $bytes . . $user . . $time";
 174      }
 175  
 176      /**
 177       * @param string $type
 178       * @return bool
 179       */
 180  	protected static function isValidType( $type ) {
 181          // From maintenance/tables.sql => img_major_mime
 182          $types = array(
 183              'unknown',
 184              'application',
 185              'audio',
 186              'image',
 187              'text',
 188              'video',
 189              'message',
 190              'model',
 191              'multipart',
 192              'chemical'
 193          );
 194  
 195          return in_array( $type, $types );
 196      }
 197  
 198  	protected function getGroupName() {
 199          return 'media';
 200      }
 201  }