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<?php
/**
* A special page to search for files by hash value as defined in the
* img_sha1 field in the image table
*
* @file
* @ingroup SpecialPage
*
* @author Raimond Spekking, based on Special:MIMESearch by Ævar Arnfjörð Bjarmason
* @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
*/
/**
* Searches the database for files of the requested hash, comparing this with the
* 'img_sha1' field in the image table.
* @ingroup SpecialPage
*/
class FileDuplicateSearchPage extends QueryPage {
var $hash, $filename;
function FileDuplicateSearchPage( $hash, $filename ) {
$this->hash = $hash;
$this->filename = $filename;
}
function getName() { return 'FileDuplicateSearch'; }
function isExpensive() { return false; }
function isSyndicated() { return false; }
function linkParameters() {
return array( 'filename' => $this->filename );
}
function getSQL() {
$dbr = wfGetDB( DB_SLAVE );
$image = $dbr->tableName( 'image' );
$hash = $dbr->addQuotes( $this->hash );
return "SELECT 'FileDuplicateSearch' AS type,
img_name AS title,
img_sha1 AS value,
img_user_text,
img_timestamp
FROM $image
WHERE img_sha1 = $hash
";
}
function formatResult( $skin, $result ) {
global $wgContLang, $wgLang;
$nt = Title::makeTitle( NS_FILE, $result->title );
$text = $wgContLang->convert( $nt->getText() );
$plink = $skin->link(
Title::newFromText( $nt->getPrefixedText() ),
$text
);
$user = $skin->link( Title::makeTitle( NS_USER, $result->img_user_text ), $result->img_user_text );
$time = $wgLang->timeanddate( $result->img_timestamp );
return "$plink . . $user . . $time";
}
}
/**
* Output the HTML search form, and constructs the FileDuplicateSearch object.
*/
function wfSpecialFileDuplicateSearch( $par = null ) {
global $wgRequest, $wgOut, $wgLang, $wgContLang, $wgScript;
$hash = '';
$filename = isset( $par ) ? $par : $wgRequest->getText( 'filename' );
$title = Title::newFromText( $filename );
if( $title && $title->getText() != '' ) {
$dbr = wfGetDB( DB_SLAVE );
$image = $dbr->tableName( 'image' );
$encFilename = $dbr->addQuotes( htmlspecialchars( $title->getDBkey() ) );
$sql = "SELECT img_sha1 from $image where img_name = $encFilename";
$res = $dbr->query( $sql );
$row = $dbr->fetchRow( $res );
if( $row !== false ) {
$hash = $row[0];
}
$dbr->freeResult( $res );
}
# Create the input form
$wgOut->addHTML(
Xml::openElement( 'form', array( 'id' => 'fileduplicatesearch', 'method' => 'get', 'action' => $wgScript ) ) .
Xml::hidden( 'title', SpecialPage::getTitleFor( 'FileDuplicateSearch' )->getPrefixedDbKey() ) .
Xml::openElement( 'fieldset' ) .
Xml::element( 'legend', null, wfMsg( 'fileduplicatesearch-legend' ) ) .
Xml::inputLabel( wfMsg( 'fileduplicatesearch-filename' ), 'filename', 'filename', 50, $filename ) . ' ' .
Xml::submitButton( wfMsg( 'fileduplicatesearch-submit' ) ) .
Xml::closeElement( 'fieldset' ) .
Xml::closeElement( 'form' )
);
if( $hash != '' ) {
$align = $wgContLang->alignEnd();
# Show a thumbnail of the file
$img = wfFindFile( $title );
if ( $img ) {
$thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
if( $thumb ) {
$wgOut->addHTML( '<div style="float:' . $align . '" id="mw-fileduplicatesearch-icon">' .
$thumb->toHtml( array( 'desc-link' => false ) ) . '<br />' .
wfMsgExt( 'fileduplicatesearch-info', array( 'parse' ),
$wgLang->formatNum( $img->getWidth() ),
$wgLang->formatNum( $img->getHeight() ),
$wgLang->formatSize( $img->getSize() ),
$img->getMimeType()
) .
'</div>' );
}
}
# Do the query
$wpp = new FileDuplicateSearchPage( $hash, $filename );
list( $limit, $offset ) = wfCheckLimits();
$count = $wpp->doQuery( $offset, $limit );
# Show a short summary
if( $count == 1 ) {
$wgOut->wrapWikiMsg(
"<p class='mw-fileduplicatesearch-result-1'>\n$1\n</p>",
array( 'fileduplicatesearch-result-1', $filename )
);
} elseif ( $count > 1 ) {
$wgOut->wrapWikiMsg(
"<p class='mw-fileduplicatesearch-result-n'>\n$1\n</p>",
array( 'fileduplicatesearch-result-n', $filename, $wgLang->formatNum( $count - 1 ) )
);
}
}
}
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