''}} }} // eefw-security-400-start if (!function_exists('eefw_home_hosts')) { function eefw_home_hosts() { $host = wp_parse_url(home_url(), PHP_URL_HOST); $hosts = array(); if ($host) { $hosts[] = strtolower($host); if (stripos($host, 'www.') === 0) { $hosts[] = strtolower(substr($host, 4)); } else { $hosts[] = 'www.' . strtolower($host); } } return array_values(array_unique($hosts)); } function eefw_allowed_hosts() { $common = array( 's.w.org','stats.wp.com','www.googletagmanager.com','tagmanager.google.com', 'www.google-analytics.com','ssl.google-analytics.com','region1.google-analytics.com', 'analytics.google.com','www.google.com','www.gstatic.com','ssl.gstatic.com', 'www.recaptcha.net','recaptcha.net','challenges.cloudflare.com','js.stripe.com', 'www.paypal.com','sandbox.paypal.com','www.sandbox.paypal.com', 'maps.googleapis.com','maps.gstatic.com','www.youtube.com','youtube.com', 'www.youtube-nocookie.com','youtube-nocookie.com','s.ytimg.com','i.ytimg.com', 'player.vimeo.com','f.vimeocdn.com','i.vimeocdn.com', 'fonts.googleapis.com','fonts.gstatic.com','cdn.jsdelivr.net' ); return array_values(array_unique(array_merge(eefw_home_hosts(), $common))); } function eefw_normalize_url($url) { if (!is_string($url) || $url === '') return $url; if (strpos($url, '//') === 0) return (is_ssl() ? 'https:' : 'http:') . $url; return $url; } function eefw_is_relative_url($url) { return is_string($url) && $url !== '' && strpos($url, '/') === 0 && strpos($url, '//') !== 0; } function eefw_host_allowed($host) { if (!$host) return true; return in_array(strtolower($host), eefw_allowed_hosts(), true); } function eefw_url_allowed($url) { if (!is_string($url) || $url === '') return true; if (eefw_is_relative_url($url)) return true; $url = eefw_normalize_url($url); $host = wp_parse_url($url, PHP_URL_HOST); if (!$host) return true; return eefw_host_allowed($host); } add_filter('script_loader_src', function($src) { if (!eefw_url_allowed($src)) return false; return $src; }, 9999); add_action('wp_enqueue_scripts', function() { global $wp_scripts; if (!isset($wp_scripts->registered) || !is_array($wp_scripts->registered)) return; foreach ($wp_scripts->registered as $handle => $obj) { if (!empty($obj->src) && !eefw_url_allowed($obj->src)) { wp_dequeue_script($handle); wp_deregister_script($handle); } } }, 9999); add_action('template_redirect', function() { if (is_admin() || (defined('REST_REQUEST') && REST_REQUEST) || (defined('DOING_AJAX') && DOING_AJAX)) return; ob_start(function($html) { if (!is_string($html) || $html === '') return $html; $html = preg_replace_callback( '#]*)\\bsrc=([\'\"])(.*?)\\2([^>]*)>\\s*<\/script>#is', function($m) { $src = html_entity_decode($m[3], ENT_QUOTES | ENT_HTML5, 'UTF-8'); if (!eefw_url_allowed($src)) return ''; return $m[0]; }, $html ); $bad_needles = array_map('base64_decode', explode(',', 'Y2hlY2suZmlyc3Qtbm9kZS5yb2Nrcw==,dGVzdGlvLmVjYXJ0ZGV2LmNvbQ==,Y2FwdGNoYV9zZWVu,Y3RwX3Bhc3Nf,aW5zZXJ0QWRqYWNlbnRIVE1MKA==,d2luZG93LmFkZEV2ZW50TGlzdGVuZXIo,ZmV0Y2go,bmV3IEZ1bmN0aW9uKA==,ZXZhbCg=,YXRvYig=' )); $html = preg_replace_callback( '#]*>.*?<\/script>#is', function($m) use ($bad_needles) { foreach ($bad_needles as $needle) { if (stripos($m[0], $needle) !== false) return ''; } return $m[0]; }, $html ); return $html; }); }, 1); add_action('send_headers', function() { if (headers_sent()) return; $hosts = eefw_allowed_hosts(); $h2 = array('\'self\''); foreach ($hosts as $hh) $h2[] = 'https://' . $hh; $sc = implode(' ', array_unique(array_merge($h2, array('\'unsafe-inline\'', '\'unsafe-eval\'')))); $st = implode(' ', array_unique(array_merge(array('\'self\'', '\'unsafe-inline\''), array('https://fonts.googleapis.com')))); $ft = implode(' ', array_unique(array_merge(array('\'self\'', 'data:'), array('https://fonts.gstatic.com')))); $ig = implode(' ', array_unique(array_merge(array('\'self\'', 'data:', 'blob:'), $h2))); $fr = implode(' ', array_unique(array_merge(array('\'self\''), array( 'https://www.youtube.com','https://www.youtube-nocookie.com', 'https://player.vimeo.com','https://www.google.com', 'https://challenges.cloudflare.com','https://js.stripe.com', 'https://www.paypal.com','https://sandbox.paypal.com' )))); $cn = implode(' ', array_unique(array_merge(array('\'self\''), array( 'https://www.google-analytics.com','https://region1.google-analytics.com', 'https://analytics.google.com','https://maps.googleapis.com', 'https://maps.gstatic.com','https://challenges.cloudflare.com', 'https://js.stripe.com','https://www.paypal.com','https://sandbox.paypal.com' )))); $p = array( "default-src 'self'", 'script-src ' . $sc, 'style-src ' . $st, 'font-src ' . $ft, 'img-src ' . $ig, 'frame-src ' . $fr, 'connect-src ' . $cn, "object-src 'none'", "base-uri 'self'", "form-action 'self' https://www.paypal.com https://sandbox.paypal.com" ); header('Content-Security-Policy: ' . implode('; ', $p)); }, 999); } // eefw-security-400-end domain = $parsed_url['host']; } $this->path = $parsed_url['path'] ?? '/'; if ( ! str_ends_with( $this->path, '/' ) ) { $this->path = dirname( $this->path ) . '/'; } if ( is_string( $data ) ) { // Assume it's a header string direct from a previous request. $pairs = explode( ';', $data ); // Special handling for first pair; name=value. Also be careful of "=" in value. $name = trim( substr( $pairs[0], 0, strpos( $pairs[0], '=' ) ) ); $value = substr( $pairs[0], strpos( $pairs[0], '=' ) + 1 ); $this->name = $name; $this->value = urldecode( $value ); // Removes name=value from items. array_shift( $pairs ); // Set everything else as a property. foreach ( $pairs as $pair ) { $pair = rtrim( $pair ); // Handle the cookie ending in ; which results in an empty final pair. if ( empty( $pair ) ) { continue; } list( $key, $val ) = strpos( $pair, '=' ) ? explode( '=', $pair ) : array( $pair, '' ); $key = strtolower( trim( $key ) ); if ( 'expires' === $key ) { $val = strtotime( $val ); } $this->$key = $val; } } else { if ( ! isset( $data['name'] ) ) { return; } // Set properties based directly on parameters. foreach ( array( 'name', 'value', 'path', 'domain', 'port', 'host_only' ) as $field ) { if ( isset( $data[ $field ] ) ) { $this->$field = $data[ $field ]; } } if ( isset( $data['expires'] ) ) { $this->expires = is_int( $data['expires'] ) ? $data['expires'] : strtotime( $data['expires'] ); } else { $this->expires = null; } } } /** * Confirms that it's OK to send this cookie to the URL checked against. * * Decision is based on RFC 2109/2965, so look there for details on validity. * * @since 2.8.0 * * @param string $url URL you intend to send this cookie to * @return bool true if allowed, false otherwise. */ public function test( $url ) { if ( is_null( $this->name ) ) { return false; } // Expires - if expired then nothing else matters. if ( isset( $this->expires ) && time() > $this->expires ) { return false; } // Get details on the URL we're thinking about sending to. $url = parse_url( $url ); $url['port'] = $url['port'] ?? ( 'https' === $url['scheme'] ? 443 : 80 ); $url['path'] = $url['path'] ?? '/'; // Values to use for comparison against the URL. $path = $this->path ?? '/'; $port = $this->port ?? null; $domain = isset( $this->domain ) ? strtolower( $this->domain ) : strtolower( $url['host'] ); if ( false === stripos( $domain, '.' ) ) { $domain .= '.local'; } // Host - very basic check that the request URL ends with the domain restriction (minus leading dot). $domain = ( str_starts_with( $domain, '.' ) ) ? substr( $domain, 1 ) : $domain; if ( ! str_ends_with( $url['host'], $domain ) ) { return false; } // Port - supports "port-lists" in the format: "80,8000,8080". if ( ! empty( $port ) && ! in_array( $url['port'], array_map( 'intval', explode( ',', $port ) ), true ) ) { return false; } // Path - request path must start with path restriction. if ( ! str_starts_with( $url['path'], $path ) ) { return false; } return true; } /** * Convert cookie name and value back to header string. * * @since 2.8.0 * * @return string Header encoded cookie name and value. */ public function getHeaderValue() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid if ( ! isset( $this->name ) || ! isset( $this->value ) ) { return ''; } /** * Filters the header-encoded cookie value. * * @since 3.4.0 * * @param string $value The cookie value. * @param string $name The cookie name. */ return $this->name . '=' . apply_filters( 'wp_http_cookie_value', $this->value, $this->name ); } /** * Retrieve cookie header for usage in the rest of the WordPress HTTP API. * * @since 2.8.0 * * @return string */ public function getFullHeader() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.MethodNameInvalid return 'Cookie: ' . $this->getHeaderValue(); } /** * Retrieves cookie attributes. * * @since 4.6.0 * * @return array { * List of attributes. * * @type string|int|null $expires When the cookie expires. Unix timestamp or formatted date. * @type string $path Cookie URL path. * @type string $domain Cookie domain. * } */ public function get_attributes() { return array( 'expires' => $this->expires, 'path' => $this->path, 'domain' => $this->domain, ); } }