1 files changed, 267 insertions, 0 deletions
diff --git a/www/wiki/includes/specials/SpecialFileDuplicateSearch.php b/www/wiki/includes/specials/SpecialFileDuplicateSearch.php
new file mode 100644
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+++ b/www/wiki/includes/specials/SpecialFileDuplicateSearch.php
@@ -0,0 +1,267 @@
+<?php
+use MediaWiki\MediaWikiServices;
+
+/**
+ * Implements Special:FileDuplicateSearch
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup SpecialPage
+ * @author Raimond Spekking, based on Special:MIMESearch by Ævar Arnfjörð Bjarmason
+ */
+
+/**
+ * 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 {
+	protected $hash = '', $filename = '';
+
+	/**
+	 * @var File $file selected reference file, if present
+	 */
+	protected $file = null;
+
+	function __construct( $name = 'FileDuplicateSearch' ) {
+		parent::__construct( $name );
+	}
+
+	function isSyndicated() {
+		return false;
+	}
+
+	function isCacheable() {
+		return false;
+	}
+
+	public function isCached() {
+		return false;
+	}
+
+	function linkParameters() {
+		return [ 'filename' => $this->filename ];
+	}
+
+	/**
+	 * Fetch dupes from all connected file repositories.
+	 *
+	 * @return array Array of File objects
+	 */
+	function getDupes() {
+		return RepoGroup::singleton()->findBySha1( $this->hash );
+	}
+
+	/**
+	 *
+	 * @param array $dupes Array of File objects
+	 */
+	function showList( $dupes ) {
+		$html = [];
+		$html[] = $this->openList( 0 );
+
+		foreach ( $dupes as $dupe ) {
+			$line = $this->formatResult( null, $dupe );
+			$html[] = "<li>" . $line . "</li>";
+		}
+		$html[] = $this->closeList();
+
+		$this->getOutput()->addHTML( implode( "\n", $html ) );
+	}
+
+	public function getQueryInfo() {
+		$imgQuery = LocalFile::getQueryInfo();
+		return [
+			'tables' => $imgQuery['tables'],
+			'fields' => [
+				'title' => 'img_name',
+				'value' => 'img_sha1',
+				'img_user_text' => $imgQuery['fields']['img_user_text'],
+				'img_timestamp'
+			],
+			'conds' => [ 'img_sha1' => $this->hash ],
+			'join_conds' => $imgQuery['joins'],
+		];
+	}
+
+	public function execute( $par ) {
+		$this->setHeaders();
+		$this->outputHeader();
+
+		$this->filename = $par !== null ? $par : $this->getRequest()->getText( 'filename' );
+		$this->file = null;
+		$this->hash = '';
+		$title = Title::newFromText( $this->filename, NS_FILE );
+		if ( $title && $title->getText() != '' ) {
+			$this->file = wfFindFile( $title );
+		}
+
+		$out = $this->getOutput();
+
+		# Create the input form
+		$formFields = [
+			'filename' => [
+				'type' => 'text',
+				'name' => 'filename',
+				'label-message' => 'fileduplicatesearch-filename',
+				'id' => 'filename',
+				'size' => 50,
+				'value' => $this->filename,
+			],
+		];
+		$hiddenFields = [
+			'title' => $this->getPageTitle()->getPrefixedDBkey(),
+		];
+		$htmlForm = HTMLForm::factory( 'ooui', $formFields, $this->getContext() );
+		$htmlForm->addHiddenFields( $hiddenFields );
+		$htmlForm->setAction( wfScript() );
+		$htmlForm->setMethod( 'get' );
+		$htmlForm->setSubmitProgressive();
+		$htmlForm->setSubmitTextMsg( $this->msg( 'fileduplicatesearch-submit' ) );
+
+		// The form should be visible always, even if it was submitted (e.g. to perform another action).
+		// To bypass the callback validation of HTMLForm, use prepareForm() and displayForm().
+		$htmlForm->prepareForm()->displayForm( false );
+
+		if ( $this->file ) {
+			$this->hash = $this->file->getSha1();
+		} elseif ( $this->filename !== '' ) {
+			$out->wrapWikiMsg(
+				"<p class='mw-fileduplicatesearch-noresults'>\n$1\n</p>",
+				[ 'fileduplicatesearch-noresults', wfEscapeWikiText( $this->filename ) ]
+			);
+		}
+
+		if ( $this->hash != '' ) {
+			# Show a thumbnail of the file
+			$img = $this->file;
+			if ( $img ) {
+				$thumb = $img->transform( [ 'width' => 120, 'height' => 120 ] );
+				if ( $thumb ) {
+					$out->addModuleStyles( 'mediawiki.special' );
+					$out->addHTML( '<div id="mw-fileduplicatesearch-icon">' .
+						$thumb->toHtml( [ 'desc-link' => false ] ) . '<br />' .
+						$this->msg( 'fileduplicatesearch-info' )->numParams(
+							$img->getWidth(), $img->getHeight() )->params(
+								$this->getLanguage()->formatSize( $img->getSize() ),
+								$img->getMimeType() )->parseAsBlock() .
+						'</div>' );
+				}
+			}
+
+			$dupes = $this->getDupes();
+			$numRows = count( $dupes );
+
+			# Show a short summary
+			if ( $numRows == 1 ) {
+				$out->wrapWikiMsg(
+					"<p class='mw-fileduplicatesearch-result-1'>\n$1\n</p>",
+					[ 'fileduplicatesearch-result-1', wfEscapeWikiText( $this->filename ) ]
+				);
+			} elseif ( $numRows ) {
+				$out->wrapWikiMsg(
+					"<p class='mw-fileduplicatesearch-result-n'>\n$1\n</p>",
+					[ 'fileduplicatesearch-result-n', wfEscapeWikiText( $this->filename ),
+						$this->getLanguage()->formatNum( $numRows - 1 ) ]
+				);
+			}
+
+			$this->doBatchLookups( $dupes );
+			$this->showList( $dupes );
+		}
+	}
+
+	function doBatchLookups( $list ) {
+		$batch = new LinkBatch();
+		/** @var File $file */
+		foreach ( $list as $file ) {
+			$batch->addObj( $file->getTitle() );
+			if ( $file->isLocal() ) {
+				$userName = $file->getUser( 'text' );
+				$batch->add( NS_USER, $userName );
+				$batch->add( NS_USER_TALK, $userName );
+			}
+		}
+
+		$batch->execute();
+	}
+
+	/**
+	 *
+	 * @param Skin $skin
+	 * @param File $result
+	 * @return string HTML
+	 */
+	function formatResult( $skin, $result ) {
+		global $wgContLang;
+
+		$linkRenderer = $this->getLinkRenderer();
+		$nt = $result->getTitle();
+		$text = $wgContLang->convert( $nt->getText() );
+		$plink = $linkRenderer->makeLink(
+			$nt,
+			$text
+		);
+
+		$userText = $result->getUser( 'text' );
+		if ( $result->isLocal() ) {
+			$userId = $result->getUser( 'id' );
+			$user = Linker::userLink( $userId, $userText );
+			$user .= '<span style="white-space: nowrap;">';
+			$user .= Linker::userToolLinks( $userId, $userText );
+			$user .= '</span>';
+		} else {
+			$user = htmlspecialchars( $userText );
+		}
+
+		$time = htmlspecialchars( $this->getLanguage()->userTimeAndDate(
+			$result->getTimestamp(), $this->getUser() ) );
+
+		return "$plink . . $user . . $time";
+	}
+
+	/**
+	 * Return an array of subpages beginning with $search that this special page will accept.
+	 *
+	 * @param string $search Prefix to search for
+	 * @param int $limit Maximum number of results to return (usually 10)
+	 * @param int $offset Number of results to skip (usually 0)
+	 * @return string[] Matching subpages
+	 */
+	public function prefixSearchSubpages( $search, $limit, $offset ) {
+		$title = Title::newFromText( $search, NS_FILE );
+		if ( !$title || $title->getNamespace() !== NS_FILE ) {
+			// No prefix suggestion outside of file namespace
+			return [];
+		}
+		$searchEngine = MediaWikiServices::getInstance()->newSearchEngine();
+		$searchEngine->setLimitOffset( $limit, $offset );
+		// Autocomplete subpage the same as a normal search, but just for files
+		$searchEngine->setNamespaces( [ NS_FILE ] );
+		$result = $searchEngine->defaultPrefixSearch( $search );
+
+		return array_map( function ( Title $t ) {
+			// Remove namespace in search suggestion
+			return $t->getText();
+		}, $result );
+	}
+
+	protected function getGroupName() {
+		return 'media';
+	}
+}