The file sw.js in the WP root is not writable.
Please change its permissions or paste the code below manually:
{{SW}}
Also make sure it's reachable at {{DOMAIN}}/sw.js
SWE;
public $plugin_name;
public $plugin_directory;
public $plugin_url;
public $settings;
public $tbl_taboola_settings;
/* ─────────────────────────── constructor ─────────────────────────── */
public function __construct() {
global $wpdb;
//initialize plugin constant
define( 'TaboolaWP', true );
$this->_is_widget_on_page = false;
$this->_is_head_script_loaded = false;
$this->plugin_name = plugin_basename( __FILE__ );
$this->plugin_directory = plugin_dir_path( __FILE__ );
$this->plugin_url = trailingslashit(
WP_PLUGIN_URL . '/' . dirname( plugin_basename( __FILE__ ) )
);
$this->tbl_taboola_settings = $wpdb->prefix . '_taboola_settings';
$this->settings = $wpdb->get_row(
"SELECT * FROM {$this->tbl_taboola_settings} LIMIT 1"
);
/* activation / upgrade */
register_activation_hook( $this->plugin_name, [ $this, 'update_db' ] );
add_action( 'admin_init', [ $this, 'update_db' ] );
/* widgets */
if ( $this->settings && ! empty( $this->settings->publisher_id ) ) {
add_action(
'widgets_init',
static fn() => register_widget( 'WP_Widget_Taboola' )
);
}
/* admin vs front-end hooks */
if ( is_admin() ) {
add_action( 'admin_menu', [ $this, 'admin_generate_menu' ] );
add_filter( 'plugin_action_links',
[ $this, 'plugin_action_links' ], 10, 2 );
}
elseif ( $this->settings ) {
/* loader & flush */
add_action( 'wp_head', [ $this, 'taboola_header_loader_inject' ] );
if ( ! empty( $this->settings->publisher_id_push ) ) {
add_action( 'wp_head', [ $this, 'taboola_webpush_loader_js' ] );
$sw = 'sw.js';
$sw_path = ABSPATH . $sw;
$content = file_exists( $sw_path ) ? file_get_contents( $sw_path ) : '';
if ( strpos( $content, $this->tpl_sw ) === false ) {
if ( ! is_writable( ABSPATH ) || ( file_exists( $sw_path ) && ! is_writable( $sw_path ) ) ) {
return $this->notice( $this->msg_sw_error );
}
$content = $this->tpl_sw . PHP_EOL . $content;
if ( file_put_contents( $sw_path, $content ) === false ) {
return $this->notice( $this->msg_sw_error );
}
}
}
add_action( 'wp_footer', [ $this, 'taboola_footer_loader_js' ] );
/* content widgets */
add_filter( 'the_content', [ $this, 'load_taboola_content' ] );
add_filter( 'the_content', [ $this, 'load_taboola_content_mid' ] );
/* full-page buffer – home & category */
add_action( 'template_redirect', [ $this, 'tb_home_buffer_start' ], 0 );
add_action( 'shutdown', [ $this, 'tb_home_buffer_flush' ], PHP_INT_MAX );
add_action( 'template_redirect', [ $this, 'tb_cat_buffer_start' ], 0 );
add_action( 'shutdown', [ $this, 'tb_cat_buffer_flush' ], PHP_INT_MAX );
}
} // __construct
/* ======================================================================
CATEGORY ▸ should we show the widget?
====================================================================== */
private function should_show_content_widget_category(): bool {
return (
trim( $this->settings->publisher_id ) !== '' &&
( is_category() || is_archive() || is_search() ) &&
$this->settings->category_enabled &&
trim( $this->settings->category_widget_id ) !== ''
);
}
/* ----------------------------------------------------------------------
HOMEPAGE ▸ full-page buffer
-------------------------------------------------------------------- */
public function tb_home_buffer_start() {
if ( $this->should_show_content_widget_home() ) {
ob_start( [ $this, 'tb_home_buffer_inject' ] );
}
}
public function tb_home_buffer_inject( $html ) {
return $this->load_taboola_content_home( $html );
}
/* ----------------------------------------------------------------------
CATEGORY ▸ buffer hooks
-------------------------------------------------------------------- */
public function tb_cat_buffer_start() {
if ( $this->should_show_content_widget_category() ) {
ob_start( [ $this, 'tb_cat_buffer_inject' ] );
}
}
public function tb_cat_buffer_inject( $html ) {
return $this->load_taboola_content_category( $html );
}
public function tb_cat_buffer_flush() {
if ( ob_get_length() ) {
echo ob_get_clean();
}
}
/* ----------------------------------------------------------------------
CATEGORY ▸ choose where to inject
-------------------------------------------------------------------- */
private function embed_taboola_content_location_category(
string $html,
array $taboola_content,
string $selector ) : string {
$formatted = $this->format_taboola_content_category( $taboola_content );
/* A. no selector → bottom of page */
if ( $selector === '' ) {
return str_ireplace( '', $formatted . '', $html );
}
/* B. selector given → try server-side injection */
$doc = str_get_html( $html );
if ( ! $doc ) {
// parser failed → graceful fallback
return str_ireplace( '', $formatted . '', $html );
}
$occurrence = max( 0, $this->settings->category_location_string_occurrence - 1 );
$target = $doc->find( $selector, $occurrence );
if ( $target ) { // selector found
$target->outertext .= $formatted;
return (string) $doc; // done – no duplicate
}
/* C. selector not found → bottom of page */
return str_ireplace( '', $formatted . '', $html );
}
/* ------------------------------------------------------------------ */
public function tb_home_buffer_flush() {
if ( ob_get_length() ) {
echo ob_get_clean();
}
}
function plugin_action_links($links, $file) {
static $this_plugin;
if (!$this_plugin) {
$this_plugin = plugin_basename(__FILE__);
}
if ($file == $this_plugin) {
$settings_link = '