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<?php |
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/* |
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Plugin Name: HTTP Headers |
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Plugin URI: https://zinoui.com/blog/http-headers-for-wordpress |
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Description: This plugin adds CORS & security HTTP headers to your website. Improves your website overall security. |
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Version: 1.4.0 |
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Author: Dimitar Ivanov |
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Author URI: https://zinoui.com |
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License: GPLv2 or later |
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Text Domain: http-headers |
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*/ |
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|
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/* |
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This program is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 2 |
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of the License, or (at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/copyleft/gpl.html>. |
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|
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Copyright (c) 2017 Zino UI |
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*/ |
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|
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if (get_option('hh_strict_transport_security_max_age') === false) { |
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$value = get_option('hh_strict_transport_security_value'); |
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$max_age = preg_match('/max-age=(\d+)/', $value, $match) ? $match[1] : 0; |
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$sub_domains = strpos($value, 'includeSubDomains') !== false ? 1 : 0; |
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add_option('hh_strict_transport_security_max_age', $max_age, null, 'yes'); |
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add_option('hh_strict_transport_security_sub_domains', $sub_domains, null, 'yes'); |
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add_option('hh_strict_transport_security_preload', 0, null, 'yes'); |
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} |
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|
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if (get_option('hh_referrer_policy') === false) { |
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add_option('hh_referrer_policy', 0, null, 'yes'); |
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add_option('hh_referrer_policy_value', null, null, 'yes'); |
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} |
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|
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if (get_option('hh_content_security_policy') === false) { |
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add_option('hh_content_security_policy', 0, null, 'yes'); |
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add_option('hh_content_security_policy_value', null, null, 'yes'); |
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} |
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|
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if (get_option('hh_method') === false) { |
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add_option('hh_method', 'php', null, 'yes'); |
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} |
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|
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function get_http_headers() { |
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$headers = array(); |
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if (get_option('hh_x_frame_options') == 1) { |
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$x_frame_options_value = strtoupper(get_option('hh_x_frame_options_value')); |
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if ($x_frame_options_value == 'ALLOW-FROM') { |
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$x_frame_options_value .= ' ' . get_option('hh_x_frame_options_domain'); |
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} |
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$headers['X-Frame-Options'] = $x_frame_options_value; |
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} |
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if (get_option('hh_x_xxs_protection') == 1) { |
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$headers['X-XSS-Protection'] = get_option('hh_x_xxs_protection_value'); |
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} |
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if (get_option('hh_x_content_type_options') == 1) { |
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$headers['X-Content-Type-Options'] = get_option('hh_x_content_type_options_value'); |
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} |
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if (get_option('hh_strict_transport_security') == 1) { |
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$hh_strict_transport_security = array(); |
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|
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$hh_strict_transport_security_max_age = get_option('hh_strict_transport_security_max_age'); |
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if ($hh_strict_transport_security_max_age !== false) |
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{ |
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$hh_strict_transport_security[] = sprintf('max-age=%u', get_option('hh_strict_transport_security_max_age')); |
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if (get_option('hh_strict_transport_security_sub_domains')) |
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{ |
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$hh_strict_transport_security[] = 'includeSubDomains'; |
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} |
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if (get_option('hh_strict_transport_security_preload')) |
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{ |
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$hh_strict_transport_security[] = 'preload'; |
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} |
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} else { |
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$hh_strict_transport_security = array(get_option('hh_strict_transport_security_value')); |
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} |
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$headers['Strict-Transport-Security'] = join('; ', $hh_strict_transport_security); |
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} |
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if (get_option('hh_x_ua_compatible') == 1) { |
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$headers['X-UA-Compatible'] = get_option('hh_x_ua_compatible_value'); |
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} |
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if (get_option('hh_public_key_pins') == 1) { |
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$public_key_pins_sha256_1 = get_option('hh_public_key_pins_sha256_1'); |
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$public_key_pins_sha256_2 = get_option('hh_public_key_pins_sha256_2'); |
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$public_key_pins_max_age = get_option('hh_public_key_pins_max_age'); |
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$public_key_pins_sub_domains = get_option('hh_public_key_pins_sub_domains'); |
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$public_key_pins_report_uri = get_option('hh_public_key_pins_report_uri'); |
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if (!empty($public_key_pins_sha256_1) && !empty($public_key_pins_sha256_2) && !empty($public_key_pins_max_age)) { |
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|
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$public_key_pins = array(); |
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$public_key_pins[] = sprintf('pin-sha256="%s"', $public_key_pins_sha256_1); |
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$public_key_pins[] = sprintf('pin-sha256="%s"', $public_key_pins_sha256_2); |
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$public_key_pins[] = sprintf("max-age=%u", $public_key_pins_max_age); |
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if ($public_key_pins_sub_domains) { |
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$public_key_pins[] = "includeSubDomains"; |
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} |
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if (!empty($public_key_pins_report_uri)) { |
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$public_key_pins[] = sprintf('report-uri="%s"', $public_key_pins_report_uri); |
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} |
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$headers['Public-Key-Pins'] = join('; ', $public_key_pins); |
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} |
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} |
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|
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if (get_option('hh_content_security_policy') == 1) |
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{ |
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$csp = array(); |
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$values = get_option('hh_content_security_policy_value'); |
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foreach ($values as $key => $val) |
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{ |
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if (!empty($val)) |
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{ |
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$csp[] = sprintf("%s %s", $key, $val); |
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} |
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} |
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if (!empty($csp)) |
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{ |
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$headers['Content-Security-Policy'] = join('; ', $csp); |
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} |
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} |
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|
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if (get_option('hh_access_control_allow_origin') == 1) |
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{ |
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$value = get_option('hh_access_control_allow_origin_value'); |
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switch ($value) |
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{ |
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case 'HTTP_ORIGIN': |
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$value = @$_SERVER['HTTP_ORIGIN']; |
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break; |
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case 'origin': |
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$value = get_option('hh_access_control_allow_origin_url'); |
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break; |
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} |
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if (!empty($value)) |
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{ |
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$headers['Access-Control-Allow-Origin'] = $value; |
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} |
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} |
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if (get_option('hh_access_control_allow_credentials') == 1) |
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{ |
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$headers['Access-Control-Allow-Credentials'] = get_option('hh_access_control_allow_credentials_value'); |
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} |
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if (get_option('hh_access_control_max_age') == 1) |
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{ |
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$value = get_option('hh_access_control_max_age_value'); |
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if (!empty($value)) |
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{ |
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$headers['Access-Control-Max-Age'] = intval($value); |
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} |
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} |
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if (get_option('hh_access_control_allow_methods') == 1) |
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{ |
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$value = get_option('hh_access_control_allow_methods_value'); |
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if (!empty($value)) |
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{ |
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$headers['Access-Control-Allow-Methods'] = join(', ', array_keys($value)); |
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} |
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} |
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if (get_option('hh_access_control_allow_headers') == 1) |
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{ |
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$value = get_option('hh_access_control_allow_headers_value'); |
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if (!empty($value)) |
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{ |
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$headers['Access-Control-Allow-Headers'] = join(', ', array_keys($value)); |
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} |
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} |
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if (get_option('hh_access_control_expose_headers') == 1) |
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{ |
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$value = get_option('hh_access_control_expose_headers_value'); |
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if (!empty($value)) |
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{ |
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$headers['Access-Control-Expose-Headers'] = join(', ', array_keys($value)); |
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} |
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} |
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if (get_option('hh_p3p') == 1) |
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{ |
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$value = get_option('hh_p3p_value'); |
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if (!empty($value)) |
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{ |
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$headers['P3P'] = 'CP="' . join(' ', array_keys($value)) . '"'; |
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} |
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} |
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if (get_option('hh_referrer_policy') == 1) { |
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$headers['Referrer-Policy'] = get_option('hh_referrer_policy_value'); |
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} |
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|
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return $headers; |
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} |
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|
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function http_headers() { |
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if (get_option('hh_method') !== 'php') { |
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return; |
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} |
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$headers = get_http_headers(); |
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foreach ($headers as $key => $value) |
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{ |
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header(sprintf("%s: %s", $key, $value)); |
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} |
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} |
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|
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function http_headers_admin_add_page() { |
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add_options_page('HTTP Headers', 'HTTP Headers', 'manage_options', 'http-headers', 'http_headers_admin_page'); |
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} |
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|
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function http_headers_admin() { |
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register_setting('http-headers-mtd', 'hh_method'); |
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register_setting('http-headers-xfo', 'hh_x_frame_options'); |
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register_setting('http-headers-xfo', 'hh_x_frame_options_value'); |
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register_setting('http-headers-xfo', 'hh_x_frame_options_domain'); |
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register_setting('http-headers-xss', 'hh_x_xxs_protection'); |
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register_setting('http-headers-xss', 'hh_x_xxs_protection_value'); |
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register_setting('http-headers-cto', 'hh_x_content_type_options'); |
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register_setting('http-headers-cto', 'hh_x_content_type_options_value'); |
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register_setting('http-headers-sts', 'hh_strict_transport_security'); |
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register_setting('http-headers-sts', 'hh_strict_transport_security_value'); //obsolete |
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register_setting('http-headers-sts', 'hh_strict_transport_security_max_age'); |
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register_setting('http-headers-sts', 'hh_strict_transport_security_sub_domains'); |
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register_setting('http-headers-sts', 'hh_strict_transport_security_preload'); |
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register_setting('http-headers-pkp', 'hh_public_key_pins'); |
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register_setting('http-headers-pkp', 'hh_public_key_pins_sha256_1'); |
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register_setting('http-headers-pkp', 'hh_public_key_pins_sha256_2'); |
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register_setting('http-headers-pkp', 'hh_public_key_pins_max_age'); |
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register_setting('http-headers-pkp', 'hh_public_key_pins_sub_domains'); |
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register_setting('http-headers-pkp', 'hh_public_key_pins_report_uri'); |
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register_setting('http-headers-uac', 'hh_x_ua_compatible'); |
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register_setting('http-headers-uac', 'hh_x_ua_compatible_value'); |
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register_setting('http-headers-p3p', 'hh_p3p'); |
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register_setting('http-headers-p3p', 'hh_p3p_value'); |
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register_setting('http-headers-rp', 'hh_referrer_policy'); |
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register_setting('http-headers-rp', 'hh_referrer_policy_value'); |
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register_setting('http-headers-csp', 'hh_content_security_policy'); |
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register_setting('http-headers-csp', 'hh_content_security_policy_value'); |
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register_setting('http-headers-acao', 'hh_access_control_allow_origin'); |
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register_setting('http-headers-acao', 'hh_access_control_allow_origin_value'); |
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register_setting('http-headers-acao', 'hh_access_control_allow_origin_url'); |
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register_setting('http-headers-acac', 'hh_access_control_allow_credentials'); |
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register_setting('http-headers-acac', 'hh_access_control_allow_credentials_value'); |
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register_setting('http-headers-acam', 'hh_access_control_allow_methods'); |
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register_setting('http-headers-acam', 'hh_access_control_allow_methods_value'); |
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register_setting('http-headers-acah', 'hh_access_control_allow_headers'); |
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register_setting('http-headers-acah', 'hh_access_control_allow_headers_value'); |
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register_setting('http-headers-aceh', 'hh_access_control_expose_headers'); |
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register_setting('http-headers-aceh', 'hh_access_control_expose_headers_value'); |
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register_setting('http-headers-acma', 'hh_access_control_max_age'); |
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register_setting('http-headers-acma', 'hh_access_control_max_age_value'); |
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|
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if (isset($_GET['settings-updated']) && $_GET['settings-updated'] == 'true') |
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{ |
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$htaccess_file = get_home_path().'.htaccess'; |
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if (get_option('hh_method') == 'htaccess') |
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{ |
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$lines = array(); |
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$lines[] = '<FilesMatch "\.(php|html)$">'; |
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$lines[] = ' <IfModule mod_headers.c>'; |
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$headers = get_http_headers(); |
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foreach ($headers as $key => $value) |
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{ |
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$lines[] = sprintf(' Header set %s %s', $key, sprintf('%1$s%2$s%1$s', strpos($value, '"') === false ? '"' : "'", $value)); |
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} |
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$lines[] = ' </IfModule>'; |
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$lines[] = '</FilesMatch>'; |
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|
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insert_with_markers($htaccess_file, "HttpHeaders", $lines); |
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} else { |
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insert_with_markers($htaccess_file, "HttpHeaders", array()); |
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} |
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} |
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} |
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|
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function http_headers_settings_link( $links ) { |
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$url = get_admin_url() . 'options-general.php?page=http-headers'; |
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$settings_link = '<a href="' . $url . '">' . __('Settings') . '</a>'; |
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array_unshift( $links, $settings_link ); |
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return $links; |
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} |
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|
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function http_headers_after_setup_theme() { |
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add_filter('plugin_action_links_' . plugin_basename(__FILE__), 'http_headers_settings_link'); |
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} |
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|
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function http_headers_enqueue($hook) { |
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if ( 'http-headers.php' != $hook ) { |
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# FIXME |
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//return; |
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} |
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|
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wp_enqueue_script('http_headers_admin_scripts', plugin_dir_url( __FILE__ ) . 'assets/scripts.js'); |
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wp_enqueue_style('http_headers_admin_styles', plugin_dir_url( __FILE__ ) . 'assets/styles.css'); |
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} |
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|
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if ( is_admin() ){ // admin actions |
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add_action('admin_menu', 'http_headers_admin_add_page'); |
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add_action('admin_init', 'http_headers_admin'); |
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add_action('admin_enqueue_scripts', 'http_headers_enqueue'); |
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add_action('after_setup_theme', 'http_headers_after_setup_theme'); |
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} else { |
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// non-admin enqueues, actions, and filters |
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add_action('send_headers', 'http_headers'); |
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} |
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|
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function http_headers_admin_page() { |
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include 'views/index.php'; |
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} |
