importImages.php

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<?php
require_once __DIR__ . '/Maintenance.php';
 
use MediaWiki\MediaWikiServices;
 
class ImportImages extends Maintenance {
 
    public function __construct() {
        parent::__construct();
 
        $this->addDescription( 'Imports images and other media files into the wiki' );
        $this->addArg( 'dir', 'Path to the directory containing images to be imported' );
 
        $this->addOption( 'extensions',
            'Comma-separated list of allowable extensions, defaults to $wgFileExtensions',
            false,
            true
        );
        $this->addOption( 'overwrite',
            'Overwrite existing images with the same name (default is to skip them)' );
        $this->addOption( 'limit',
            'Limit the number of images to process. Ignored or skipped images are not counted',
            false,
            true
        );
        $this->addOption( 'from',
            "Ignore all files until the one with the given name. Useful for resuming aborted "
                . "imports. The name should be the file's canonical database form.",
            false,
            true
        );
        $this->addOption( 'skip-dupes',
            'Skip images that were already uploaded under a different name (check SHA1)' );
        $this->addOption( 'search-recursively', 'Search recursively for files in subdirectories' );
        $this->addOption( 'sleep',
            'Sleep between files. Useful mostly for debugging',
            false,
            true
        );
        $this->addOption( 'user',
            "Set username of uploader, default 'Maintenance script'",
            false,
            true
        );
        // This parameter can optionally have an argument. If none specified, getOption()
        // returns 1 which is precisely what we need.
        $this->addOption( 'check-userblock', 'Check if the user got blocked during import' );
        $this->addOption( 'comment',
            "Set file description, default 'Importing file'",
            false,
            true
        );
        $this->addOption( 'comment-file',
            'Set description to the content of this file',
            false,
            true
        );
        $this->addOption( 'comment-ext',
            'Causes the description for each file to be loaded from a file with the same name, but '
                . 'the extension provided. If a global description is also given, it is appended.',
            false,
            true
        );
        $this->addOption( 'summary',
            'Upload summary, description will be used if not provided',
            false,
            true
        );
        $this->addOption( 'license',
            'Use an optional license template',
            false,
            true
        );
        $this->addOption( 'timestamp',
            'Override upload time/date, all MediaWiki timestamp formats are accepted',
            false,
            true
        );
        $this->addOption( 'protect',
            'Specify the protect value (autoconfirmed,sysop)',
            false,
            true
        );
        $this->addOption( 'unprotect', 'Unprotects all uploaded images' );
        $this->addOption( 'source-wiki-url',
            'If specified, take User and Comment data for each imported file from this URL. '
                . 'For example, --source-wiki-url="http://en.wikipedia.org/',
            false,
            true
        );
        $this->addOption( 'dry', "Dry run, don't import anything" );
    }
 
    public function execute() {
        global $wgFileExtensions, $wgUser, $wgRestrictionLevels;
 
        $permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
 
        $processed = $added = $ignored = $skipped = $overwritten = $failed = 0;
 
        $this->output( "Importing Files\n\n" );
 
        $dir = $this->getArg( 0 );
 
        # Check Protection
        if ( $this->hasOption( 'protect' ) && $this->hasOption( 'unprotect' ) ) {
            $this->fatalError( "Cannot specify both protect and unprotect.  Only 1 is allowed.\n" );
        }
 
        if ( $this->hasOption( 'protect' ) && trim( $this->getOption( 'protect' ) ) ) {
            $this->fatalError( "You must specify a protection option.\n" );
        }
 
        # Prepare the list of allowed extensions
        $extensions = $this->hasOption( 'extensions' )
            ? explode( ',', strtolower( $this->getOption( 'extensions' ) ) )
            : $wgFileExtensions;
 
        # Search the path provided for candidates for import
        $files = $this->findFiles( $dir, $extensions, $this->hasOption( 'search-recursively' ) );
 
        # Initialise the user for this operation
        $user = $this->hasOption( 'user' )
            ? User::newFromName( $this->getOption( 'user' ) )
            : User::newSystemUser( 'Maintenance script', [ 'steal' => true ] );
        if ( !$user instanceof User ) {
            $user = User::newSystemUser( 'Maintenance script', [ 'steal' => true ] );
        }
        $wgUser = $user;
 
        # Get block check. If a value is given, this specified how often the check is performed
        $checkUserBlock = (int)$this->getOption( 'check-userblock' );
 
        $from = $this->getOption( 'from' );
        $sleep = (int)$this->getOption( 'sleep' );
        $limit = (int)$this->getOption( 'limit' );
        $timestamp = $this->getOption( 'timestamp', false );
 
        # Get the upload comment. Provide a default one in case there's no comment given.
        $commentFile = $this->getOption( 'comment-file' );
        if ( $commentFile !== null ) {
            $comment = file_get_contents( $commentFile );
            if ( $comment === false || $comment === null ) {
                $this->fatalError( "failed to read comment file: {$commentFile}\n" );
            }
        } else {
            $comment = $this->getOption( 'comment', 'Importing file' );
        }
        $commentExt = $this->getOption( 'comment-ext' );
        $summary = $this->getOption( 'summary', '' );
 
        $license = $this->getOption( 'license', '' );
 
        $sourceWikiUrl = $this->getOption( 'source-wiki-url' );
 
        # Batch "upload" operation
        $count = count( $files );
        if ( $count > 0 ) {
            foreach ( $files as $file ) {
                if ( $sleep && ( $processed > 0 ) ) {
                    sleep( $sleep );
                }
 
                $base = UtfNormal\Validator::cleanUp( wfBaseName( $file ) );
 
                # Validate a title
                $title = Title::makeTitleSafe( NS_FILE, $base );
                if ( !is_object( $title ) ) {
                    $this->output(
                        "{$base} could not be imported; a valid title cannot be produced\n"
                    );
                    continue;
                }
 
                if ( $from ) {
                    if ( $from == $title->getDBkey() ) {
                        $from = null;
                    } else {
                        $ignored++;
                        continue;
                    }
                }
 
                if ( $checkUserBlock && ( ( $processed % $checkUserBlock ) == 0 ) ) {
                    $user->clearInstanceCache( 'name' ); // reload from DB!
                    if ( $permissionManager->isBlockedFrom( $user, $title ) ) {
                        $this->output(
                            "{$user->getName()} is blocked from {$title->getPrefixedText()}! skipping.\n"
                        );
                        $skipped++;
                        continue;
                    }
                }
 
                # Check existence
                $image = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo()
                    ->newFile( $title );
                if ( $image->exists() ) {
                    if ( $this->hasOption( 'overwrite' ) ) {
                        $this->output( "{$base} exists, overwriting..." );
                        $svar = 'overwritten';
                    } else {
                        $this->output( "{$base} exists, skipping\n" );
                        $skipped++;
                        continue;
                    }
                } else {
                    if ( $this->hasOption( 'skip-dupes' ) ) {
                        $repo = $image->getRepo();
                        # XXX: we end up calculating this again when actually uploading. that sucks.
                        $sha1 = FSFile::getSha1Base36FromPath( $file );
 
                        $dupes = $repo->findBySha1( $sha1 );
 
                        if ( $dupes ) {
                            $this->output(
                                "{$base} already exists as {$dupes[0]->getName()}, skipping\n"
                            );
                            $skipped++;
                            continue;
                        }
                    }
 
                    $this->output( "Importing {$base}..." );
                    $svar = 'added';
                }
 
                if ( $sourceWikiUrl ) {
                    /* find comment text directly from source wiki, through MW's API */
                    $real_comment = $this->getFileCommentFromSourceWiki( $sourceWikiUrl, $base );
                    if ( $real_comment === false ) {
                        $commentText = $comment;
                    } else {
                        $commentText = $real_comment;
                    }
 
                    /* find user directly from source wiki, through MW's API */
                    $real_user = $this->getFileUserFromSourceWiki( $sourceWikiUrl, $base );
                    if ( $real_user === false ) {
                        $wgUser = $user;
                    } else {
                        $wgUser = User::newFromName( $real_user );
                        if ( $wgUser === false ) {
                            # user does not exist in target wiki
                            $this->output(
                                "failed: user '$real_user' does not exist in target wiki."
                            );
                            continue;
                        }
                    }
                } else {
                    # Find comment text
                    $commentText = false;
 
                    if ( $commentExt ) {
                        $f = $this->findAuxFile( $file, $commentExt );
                        if ( !$f ) {
                            $this->output( " No comment file with extension {$commentExt} found "
                                 . "for {$file}, using default comment. " );
                        } else {
                            $commentText = file_get_contents( $f );
                            if ( !$commentText ) {
                                $this->output(
                                    " Failed to load comment file {$f}, using default comment. "
                                );
                            }
                        }
                    }
 
                    if ( !$commentText ) {
                        $commentText = $comment;
                    }
                }
 
                # Import the file
                if ( $this->hasOption( 'dry' ) ) {
                    $this->output(
                        " publishing {$file} by '{$wgUser->getName()}', comment '$commentText'... "
                    );
                } else {
                    $mwProps = new MWFileProps( MediaWiki\MediaWikiServices::getInstance()->getMimeAnalyzer() );
                    $props = $mwProps->getPropsFromPath( $file, true );
                    $flags = 0;
                    $publishOptions = [];
                    $handler = MediaHandler::getHandler( $props['mime'] );
                    if ( $handler ) {
                        $metadata = \Wikimedia\AtEase\AtEase::quietCall( 'unserialize', $props['metadata'] );
 
                        $publishOptions['headers'] = $handler->getContentHeaders( $metadata );
                    } else {
                        $publishOptions['headers'] = [];
                    }
                    $archive = $image->publish( $file, $flags, $publishOptions );
                    if ( !$archive->isGood() ) {
                        $this->output( "failed. (" .
                             $archive->getMessage( false, false, 'en' )->text() .
                             ")\n" );
                        $failed++;
                        continue;
                    }
                }
 
                $commentText = SpecialUpload::getInitialPageText( $commentText, $license );
                if ( !$this->hasOption( 'summary' ) ) {
                    $summary = $commentText;
                }
 
                if ( $this->hasOption( 'dry' ) ) {
                    $this->output( "done.\n" );
                } elseif ( $image->recordUpload2(
                    $archive->value,
                    $summary,
                    $commentText,
                    $props,
                    $timestamp
                )->isOK() ) {
                    $this->output( "done.\n" );
 
                    $doProtect = false;
 
                    $protectLevel = $this->getOption( 'protect' );
 
                    if ( $protectLevel && in_array( $protectLevel, $wgRestrictionLevels ) ) {
                        $doProtect = true;
                    }
                    if ( $this->hasOption( 'unprotect' ) ) {
                        $protectLevel = '';
                        $doProtect = true;
                    }
 
                    if ( $doProtect ) {
                        # Protect the file
                        $this->output( "\nWaiting for replica DBs...\n" );
                        // Wait for replica DBs.
                        sleep( 2 ); # Why this sleep?
                        wfWaitForSlaves();
 
                        $this->output( "\nSetting image restrictions ... " );
 
                        $cascade = false;
                        $restrictions = [];
                        foreach ( $title->getRestrictionTypes() as $type ) {
                            $restrictions[$type] = $protectLevel;
                        }
 
                        $page = WikiPage::factory( $title );
                        $status = $page->doUpdateRestrictions( $restrictions, [], $cascade, '', $user );
                        $this->output( ( $status->isOK() ? 'done' : 'failed' ) . "\n" );
                    }
                } else {
                    $this->output( "failed. (at recordUpload stage)\n" );
                    $svar = 'failed';
                }
 
                $$svar++;
                $processed++;
 
                if ( $limit && $processed >= $limit ) {
                    break;
                }
            }
 
            # Print out some statistics
            $this->output( "\n" );
            foreach (
                [
                    'count' => 'Found',
                    'limit' => 'Limit',
                    'ignored' => 'Ignored',
                    'added' => 'Added',
                    'skipped' => 'Skipped',
                    'overwritten' => 'Overwritten',
                    'failed' => 'Failed'
                ] as $var => $desc
            ) {
                if ( $$var > 0 ) {
                    $this->output( "{$desc}: {$$var}\n" );
                }
            }
        } else {
            $this->output( "No suitable files could be found for import.\n" );
        }
    }
 
    private function findFiles( $dir, $exts, $recurse = false ) {
        if ( is_dir( $dir ) ) {
            $dhl = opendir( $dir );
            if ( $dhl ) {
                $files = [];
                while ( ( $file = readdir( $dhl ) ) !== false ) {
                    if ( is_file( $dir . '/' . $file ) ) {
                        $ext = pathinfo( $file, PATHINFO_EXTENSION );
                        if ( array_search( strtolower( $ext ), $exts ) !== false ) {
                            $files[] = $dir . '/' . $file;
                        }
                    } elseif ( $recurse && is_dir( $dir . '/' . $file ) && $file !== '..' && $file !== '.' ) {
                        $files = array_merge( $files, $this->findFiles( $dir . '/' . $file, $exts, true ) );
                    }
                }
 
                return $files;
            } else {
                return [];
            }
        } else {
            return [];
        }
    }
 
    private function findAuxFile( $file, $auxExtension, $maxStrip = 1 ) {
        if ( strpos( $auxExtension, '.' ) !== 0 ) {
            $auxExtension = '.' . $auxExtension;
        }
 
        $d = dirname( $file );
        $n = basename( $file );
 
        while ( $maxStrip >= 0 ) {
            $f = $d . '/' . $n . $auxExtension;
 
            if ( file_exists( $f ) ) {
                return $f;
            }
 
            $idx = strrpos( $n, '.' );
            if ( !$idx ) {
                break;
            }
 
            $n = substr( $n, 0, $idx );
            $maxStrip -= 1;
        }
 
        return false;
    }
 
    # @todo FIXME: Access the api in a saner way and performing just one query
    # (preferably batching files too).
    private function getFileCommentFromSourceWiki( $wiki_host, $file ) {
        $url = $wiki_host . '/api.php?action=query&format=xml&titles=File:'
            . rawurlencode( $file ) . '&prop=imageinfo&&iiprop=comment';
        $body = Http::get( $url, [], __METHOD__ );
        if ( preg_match( '#<ii comment="([^"]*)" />#', $body, $matches ) == 0 ) {
            return false;
        }
 
        return html_entity_decode( $matches[1] );
    }
 
    private function getFileUserFromSourceWiki( $wiki_host, $file ) {
        $url = $wiki_host . '/api.php?action=query&format=xml&titles=File:'
            . rawurlencode( $file ) . '&prop=imageinfo&&iiprop=user';
        $body = Http::get( $url, [], __METHOD__ );
        if ( preg_match( '#<ii user="([^"]*)" />#', $body, $matches ) == 0 ) {
            return false;
        }
 
        return html_entity_decode( $matches[1] );
    }
 
}
 
$maintClass = ImportImages::class;
require_once RUN_MAINTENANCE_IF_MAIN;