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<?php namespace WebpConverter\Loader; use WebpConverter\Settings\Option\OutputFormatsOption; use WebpConverter\Settings\Option\SupportedDirectoriesOption; use WebpConverter\Settings\Option\SupportedExtensionsOption; /** * Supports method of loading images using .php file as Pass Thru. / class PassthruLoader extends LoaderAbstract { const LOADER_TYPE = 'passthru'; const PATH_LOADER = '/webpc-passthru.php'; const LOADER_SOURCE = '/includes/passthru.php'; /* * @var string[] / private $allowed_urls = []; /* * {@inheritdoc} / public function get_type(): string { return self::LOADER_TYPE; } /* * {@inheritdoc} / public function is_active_loader(): bool { if ( ! parent::is_active_loader() ) { return false; } return ( ( apply_filters( 'webpc_dir_name', '', 'uploads' ) === 'wp-content/uploads' ) && ( apply_filters( 'webpc_dir_name', '', 'webp' ) === 'wp-content/uploads-webpc' ) ); } /* * {@inheritdoc} / public function init_admin_hooks() { add_filter( 'webpc_debug_image_url', [ $this, 'update_image_urls' ] ); } /* * {@inheritdoc} / public function init_front_end_hooks() { add_action( 'init', [ $this, 'start_buffering' ] ); } /* * {@inheritdoc} / public function activate_loader( bool $is_debug = false ) { $settings = ( ! $is_debug ) ? $this->plugin_data->get_plugin_settings() : $this->plugin_data->get_plugin_settings_debug(); $path_source = $this->plugin_info->get_plugin_directory_path() . self::LOADER_SOURCE; $source_code = ( is_readable( $path_source ) ) ? file_get_contents( $path_source ) ?: '' : ''; if ( ! $source_code ) { return; } $path_dir_wp_content = dirname( apply_filters( 'webpc_dir_name', '', 'uploads' ) ); $path_dir_webp = apply_filters( 'webpc_dir_name', '', 'webp' ); $allowed_urls = $this->allowed_urls ?: $this->get_allowed_urls( $path_dir_wp_content, $path_dir_webp ); $mime_types = $this->format_factory->get_mime_types( $settings[ OutputFormatsOption::OPTION_NAME ] ); $source_code = preg_replace( '/(ALLOWED_URL_PREFIXES(?:\s+)= \')(\')/', '$1' . base64_encode( json_encode( $allowed_urls ) ?: '' ) . '$2', $source_code ); $source_code = preg_replace( '/(MIME_TYPES(?:\s+)= \')(\')/', '$1' . base64_encode( json_encode( $mime_types ) ?: '' ) . '$2', $source_code ?: '' ); $dir_output = dirname( apply_filters( 'webpc_dir_path', '', 'uploads' ) ); if ( is_writable( $dir_output ) ) { file_put_contents( $dir_output . self::PATH_LOADER, $source_code ); } } /* * @param string $path_dir_wp_content . * @param string $path_dir_webp . * * @return string[] / private function get_allowed_urls( string $path_dir_wp_content, string $path_dir_webp ): array { $allowed_urls = []; if ( is_multisite() ) { $sites = get_sites( [ 'fields' => 'ids', 'number' => 0, ] ); foreach ( $sites as $blog_id ) { switch_to_blog( $blog_id ); $upload = wp_upload_dir(); if ( ! empty( $upload['baseurl'] ) ) { $allowed_urls[ $upload['baseurl'] ] = realpath( str_replace( $path_dir_wp_content, $path_dir_webp, $upload['basedir'] ) ); } restore_current_blog(); } } else { $upload = wp_upload_dir(); if ( ! empty( $upload['baseurl'] ) ) { $allowed_urls[ $upload['baseurl'] ] = realpath( str_replace( $path_dir_wp_content, $path_dir_webp, $upload['basedir'] ) ); } } $this->allowed_urls = array_filter( $allowed_urls ); return $this->allowed_urls; } /* * {@inheritdoc} / public function deactivate_loader() { $dir_output = dirname( apply_filters( 'webpc_dir_path', '', 'uploads' ) ) . self::PATH_LOADER; if ( is_writable( $dir_output ) ) { unlink( $dir_output ); } } /* * @return void * @internal / public function start_buffering() { if ( ! ( ( defined( 'DOING_AJAX' ) && DOING_AJAX ) \|\| ( ! is_admin() && ! is_network_admin() ) ) ) { return; } ob_start( function ( $buffer ) { return $this->update_image_urls( $buffer ); } ); } /* * Replaces URLs to source images in output buffer. * * @param string $buffer Contents of output buffer. * @param bool $is_debug Is debugging? * * @return string Contents of output buffer. * @internal / public function update_image_urls( string $buffer, bool $is_debug = false ): string { $settings = ( ! $is_debug ) ? $this->plugin_data->get_plugin_settings() : $this->plugin_data->get_plugin_settings_debug(); $extensions = implode( '\|', $settings[ SupportedExtensionsOption::OPTION_NAME ] ); if ( ! $extensions ) { return $buffer; } $source_dir = $this->get_loader_url(); $allowed_dirs = $this->get_allowed_dirs( $settings ); if ( ! $source_dir \|\| ! $allowed_dirs ) { return $buffer; } $dir_paths = str_replace( '/', '\\/', implode( '\|', $allowed_dirs ) ); $has_nocache = apply_filters( 'webpc_passthru_url_nocache', true ); return preg_replace( '/(https?:\/\/(?:[^\s()"\']+)(?:' . $dir_paths . ')(?:[^\s()"\']+)\.(?:' . $extensions . '))/', $source_dir . '?src=$1' . ( ( $has_nocache ) ? '&nocache=1' : '' ), $buffer ) ?: ''; } /* * Returns URL for Passthru loader. * * @return string\|null URL of source PHP file. / public static function get_loader_url() { if ( ! $source_dir = dirname( apply_filters( 'webpc_dir_url', '', 'uploads' ) ) ) { return null; } return $source_dir . self::PATH_LOADER; } /* * Returns list of directories for which redirection from source images to output images. * * @param mixed[] $settings Plugin settings. * * @return string[] List of directories names. */ private function get_allowed_dirs( array $settings ): array { $dirs = []; foreach ( $settings[ SupportedDirectoriesOption::OPTION_NAME ] as $dir ) { $dirs[] = apply_filters( 'webpc_dir_name', '', $dir ); } return array_filter( $dirs ); } }

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