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<?php |
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|
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namespace WP_Defender\Behavior\Scan; |
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|
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use Calotes\Base\File; |
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use Calotes\Component\Behavior; |
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use WP_Defender\Component\Timer; |
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use WP_Defender\Model\Scan; |
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use WP_Defender\Model\Scan_Item; |
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use WP_Defender\Model\Setting\Scan as Scan_Settings; |
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use WP_Defender\Traits\IO; |
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use WP_Defender\Traits\Theme; |
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use WP_Error; |
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|
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//Deprecated since 2.5.0. |
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class Theme_Integrity extends Behavior { |
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use IO, Theme; |
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|
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public const URL_THEME_DOWNLOAD = 'https://downloads.wordpress.org/theme/'; |
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public const THEME_SLUGS = 'wd_theme_slugs_changes'; |
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public const THEME_PREMIUM_SLUGS = 'wd_theme_premium_slugs'; |
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/** |
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* List of premium theme slugs. |
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* |
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* @var array |
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*/ |
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private $premium_slugs = []; |
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|
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private function download_file( $url ) { |
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if ( ! function_exists( 'download_url' ) ) { |
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require_once ABSPATH . 'wp-admin' . DIRECTORY_SEPARATOR . 'includes' . DIRECTORY_SEPARATOR . 'file.php'; |
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} |
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$is_file = download_url( $url ); |
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if ( is_wp_error( $is_file ) ) { |
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return new WP_Error( 'defender_theme_download', $is_file->get_error_message() ); |
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} |
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if ( ! realpath( $is_file ) ) { |
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return new WP_Error( 'defender_file_not_found', __( 'Downloaded file could not be found.', 'wpdef' ) ); |
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} |
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|
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return $is_file; |
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} |
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|
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private function get_tmp_theme_folder() { |
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return $this->get_tmp_folder() . 'zip-themes' . DIRECTORY_SEPARATOR; |
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} |
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|
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/** |
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* Get hashes of the uploaded theme. |
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* |
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* @param string $zip_file |
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* @param string $theme_folder |
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* |
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* @return array|WP_Error |
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*/ |
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private function get_hash_uploaded_archive( $zip_file, $theme_folder ) { |
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$unzip_folder = $this->get_tmp_theme_folder(); |
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|
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if ( ! file_exists( $unzip_folder . DIRECTORY_SEPARATOR . $theme_folder ) ) { |
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if ( ! function_exists( 'WP_Filesystem' ) ) { |
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include_once 'wp-admin/includes/file.php'; |
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} |
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WP_Filesystem(); |
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|
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$unzip_result = unzip_file( $zip_file, $unzip_folder ); |
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|
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if ( ! $unzip_result ) { |
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return new WP_Error( |
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'defender_zip', |
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sprintf( |
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/* translators: %s: file path */ |
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__( 'Unable to unzip file %s', 'wpdef' ), |
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$zip_file |
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) |
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); |
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} |
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} |
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|
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$array_hashes = array(); |
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$theme_unzip = new File( |
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$unzip_folder . $theme_folder, |
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true, |
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false, |
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array(), |
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array(), |
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true, |
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true |
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); |
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|
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$theme_files = $theme_unzip->get_dir_tree(); |
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$theme_files = array_filter( $theme_files ); |
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|
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$theme_files = new \ArrayIterator( $theme_files ); |
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while ( $theme_files->valid() ) { |
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$file = $theme_files->current(); |
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$rev_file = str_replace( $unzip_folder, '', $file ); |
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$array_hashes[ $rev_file ] = md5_file( $file ); |
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$theme_files->next(); |
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} |
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|
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return $array_hashes; |
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} |
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|
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/** |
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* @param string $theme_folder |
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* @param object $theme WP_Theme. |
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* |
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* @return array |
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*/ |
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public function get_theme_hash( $theme_folder, $theme ) { |
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$url = self::URL_THEME_DOWNLOAD . $theme_folder . '.' . $theme->get( 'Version' ) . '.zip'; |
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$tmp_zip_file = $this->download_file( $url ); |
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if ( is_wp_error( $tmp_zip_file ) ) { |
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$this->log( 'Scan theme error: ' . $tmp_zip_file->get_error_message(), 'scan.log' ); |
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return array(); |
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} |
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|
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$theme_hashes = $this->get_hash_uploaded_archive( $tmp_zip_file, $theme_folder ); |
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unlink( $tmp_zip_file ); |
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if ( is_wp_error( $theme_hashes ) ) { |
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$this->log( 'Scan theme error: ' . $theme_hashes->get_error_message(), 'scan.log' ); |
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return array(); |
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} |
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return $theme_hashes; |
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} |
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|
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/** |
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* Fetch the checksums. |
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* |
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* @return array |
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*/ |
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public function theme_checksum() { |
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$all_theme_hashes = array(); |
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foreach ( $this->get_themes() as $theme_folder => $theme ) { |
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if ( is_object( $theme->parent() ) ) { |
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continue; |
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} |
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$theme_hashes = $this->get_theme_hash( $theme_folder, $theme ); |
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if ( ! empty( $theme_hashes ) ) { |
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$all_theme_hashes = array_merge( $all_theme_hashes, $theme_hashes ); |
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} else { |
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$this->premium_slugs[] = $theme_folder; |
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} |
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} |
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// Remove tmp theme dirs. |
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$this->delete_dir( $this->get_tmp_theme_folder() ); |
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|
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return $all_theme_hashes; |
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} |
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|
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/** |
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* Check if the themes' file is on touch. |
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*/ |
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public function theme_integrity_check() { |
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$checksums = $this->theme_checksum(); |
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$theme_dir = WP_CONTENT_DIR . DIRECTORY_SEPARATOR . 'themes'; |
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$exclude = array( 'filename' => array( 'index.php' ) ); |
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if ( ! empty( $this->premium_slugs ) ) { |
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// Exclude premium theme files. |
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foreach ( $this->premium_slugs as $premium_slug ) { |
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$exclude['dir'][] = $theme_dir . DIRECTORY_SEPARATOR . $premium_slug; |
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} |
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} |
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// Get theme files. |
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$themes = new File( |
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$theme_dir, |
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true, |
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false, |
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array(), |
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$exclude, |
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true, |
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true |
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); |
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|
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$theme_files = $themes->get_dir_tree(); |
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$theme_files = array_filter( $theme_files ); |
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$theme_files = new \ArrayIterator( $theme_files ); |
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$timer = new Timer(); |
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$model = $this->owner->scan; |
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$pos = (int) $model->task_checkpoint; |
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$theme_files->seek( $pos ); |
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$slugs_of_edited_themes = array(); |
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while ( $theme_files->valid() ) { |
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if ( ! $timer->check() ) { |
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$this->log( 'break out cause too long', 'scan.log' ); |
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break; |
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} |
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|
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if ( $model->is_issue_whitelisted( $theme_files->current() ) ) { |
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// This is whitelisted, so do nothing. |
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$theme_files->next(); |
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continue; |
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} |
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|
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if ( $model->is_issue_ignored( $theme_files->current() ) ) { |
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// This is ignored, so do nothing. |
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$theme_files->next(); |
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continue; |
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} |
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|
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// The file will be '\' instead of '/' on Windows, so we need to convert everything to '/'. |
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$file = $theme_files->current(); |
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// Get relative so we can compare. |
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$abs_path = $theme_dir; |
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if ( defender_is_windows() ) { |
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// This mean we are on Windows. |
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$abs_path = str_replace( '/', DIRECTORY_SEPARATOR, $abs_path ); |
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} |
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$rev_file = str_replace( $abs_path, '', $file ); |
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// Remove the first \ on Windows. |
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$rev_file = str_replace( DIRECTORY_SEPARATOR, '/', $rev_file ); |
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// Remove the first / on path. |
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$rev_file = ltrim( $rev_file, '/' ); |
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if ( isset( $checksums[ $rev_file ] ) ) { |
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if ( ! $this->compare_hashes( $file, $checksums[ $rev_file ] ) ) { |
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$base_slug = explode( '/', $rev_file ); |
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$slugs_of_edited_themes[] = array_shift( $base_slug ); |
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$this->log( sprintf( 'modified %s', $file ), 'scan.log' ); |
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$model->add_item( |
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Scan_Item::TYPE_THEME_CHECK, |
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array( |
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'file' => $file, |
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'type' => 'modified', |
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) |
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); |
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} |
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} else { |
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$base_slug = explode( '/', $rev_file ); |
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$theme_slug = array_shift( $base_slug ); |
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if ( ! in_array( $theme_slug, $slugs_of_edited_themes, true ) ) { |
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// Check is it an unknown free theme file. |
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$response = wp_remote_head( "https://wordpress.org/themes/$theme_slug/" ); |
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if ( 200 === (int) wp_remote_retrieve_response_code( $response ) ) { |
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// No verify from wp.org. |
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$slugs_of_edited_themes[] = $theme_slug; |
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$model->add_item( |
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Scan_Item::TYPE_THEME_CHECK, |
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array( |
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'file' => $file, |
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'type' => is_dir( $file ) ? 'dir' : 'unversion', |
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) |
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); |
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} |
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} |
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} |
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$model->calculate_percent( $theme_files->key() * 100 / $theme_files->count(), 4 ); |
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if ( 0 === $theme_files->key() % 100 ) { |
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// We should update the model percent each 100 files so we have some progress on the screen. |
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$model->save(); |
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} |
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$theme_files->next(); |
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} |
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if ( $theme_files->valid() ) { |
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// Save the current progress and quit. |
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$model->task_checkpoint = $theme_files->key(); |
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} else { |
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// We will check if we have any ignore issue from last scan, so we can bring it here. |
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$last = Scan::get_last(); |
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if ( is_object( $last ) ) { |
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$ignored_issues = $last->get_issues( Scan_Item::TYPE_THEME_CHECK, Scan_Item::STATUS_IGNORE ); |
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foreach ( $ignored_issues as $issue ) { |
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$model->add_item( Scan_Item::TYPE_THEME_CHECK, $issue->raw_data, Scan_Item::STATUS_IGNORE ); |
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} |
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} |
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// Done, reset this, so we can use later. |
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$model->task_checkpoint = null; |
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} |
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$model->save(); |
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/** |
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* Reduce false positive reports. Check it only if enabled 'Suspicious code' option. |
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* @since 2.4.10 |
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*/ |
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if ( ( new Scan_Settings() )->scan_malware ) { |
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if ( ! empty( $slugs_of_edited_themes ) ) { |
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update_site_option( self::THEME_SLUGS, array_unique( $slugs_of_edited_themes ) ); |
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} |
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if ( ! empty( $this->premium_slugs ) ) { |
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update_site_option( self::THEME_PREMIUM_SLUGS, $this->premium_slugs ); |
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} |
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} |
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// Todo: add file and time limit improvement. |
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return ! $theme_files->valid(); |
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} |
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} |
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|
