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<?php |
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// Exit if accessed directly. |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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/** |
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* Apply security headers. |
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* |
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* This function applies several HTTP security headers to enhance site protection if the |
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* 'ns_shield_security_headers' option is enabled. The following headers are applied: |
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* - Strict-Transport-Security: Applied only if the connection is secure (HTTPS). |
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* - X-Frame-Options: SAMEORIGIN |
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* - X-Content-Type-Options: nosniff |
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* - Referrer-Policy: no-referrer-when-downgrade |
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* - Permissions-Policy: geolocation=(self), microphone=() |
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* |
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* @return void |
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*/ |
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function ns_shield_apply_security_headers() { |
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if ( get_option( 'ns_shield_security_headers' ) ) { |
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// Apply HSTS header only if connection is secure. |
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if ( is_ssl() ) { |
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header( "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload" ); |
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} |
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header( "X-Frame-Options: SAMEORIGIN" ); |
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header( "X-Content-Type-Options: nosniff" ); |
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header( "Referrer-Policy: no-referrer-when-downgrade" ); |
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header( "Permissions-Policy: geolocation=(self), microphone=()" ); |
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} |
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} |
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add_action( 'send_headers', 'ns_shield_apply_security_headers' ); |
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?> |
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