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Security header setup for the Website service (#8)

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This PR contains the work done to add a `SecurityHeadersMiddleware` middleware that stamps hardened security-related HTTP headers onto every response.

To provide further details about the work:

* Implemented the `SecurityHeadersMiddleware` middleware, which precomputes headers once from a `Configuration` object and applies them to every response:
  * _Content-Security-Policy_,
  * _X-Content-Type-Options_,
  * _X-Frame-Options_,
  * _Referrer-Policy_,
  * _Permissions-Policy_,
  * _Strict-Transport-Security_ (optional).
* Integrated this middleware into the router (near the top of the chain), reading each value from configuration with hardened defaults.
* The _Strict-Transport-Security_ has no default value — omitted unless explicitly set, so it stays off in plain-HTTP during development and on only behind TLS.
* Added security-header constants keys and values.

Reviewed-on: rock-n-code/loud-amsterdam#8
Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
Co-committed-by: Javier Cicchelli <javier@rock-n-code.com>
This commit is contained in:
javier
2026-06-28 11:35:54 +00:00
committed by javier
parent 7c18cd9ec0
commit 6b6389cb0f
9 changed files with 497 additions and 31 deletions
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Services/Website/Sources/Library/Public/Extensions/ConfigKey+Constants.swift
+15
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@@ -34,4 +34,19 @@ extension ConfigKey {
/// The configuration key for the directory the static files are served from.
public static let staticFiles: ConfigKey = "path.staticFiles"
}
/// A namespace for the security headers configuration keys.
public enum Security {
/// The configuration key for the `Content-Security-Policy` header value.
public static let contentSecurityPolicy: ConfigKey = "security.contentSecurityPolicy"
/// The configuration key for the `X-Content-Type-Options` header value.
public static let contentTypeOptions: ConfigKey = "security.contentTypeOptions"
/// The configuration key for the `X-Frame-Options` header value.
public static let frameOptions: ConfigKey = "security.frameOptions"
/// The configuration key for the `Referrer-Policy` header value.
public static let referrerPolicy: ConfigKey = "security.referrerPolicy"
/// The configuration key for the `Permissions-Policy` header value.
public static let permissionsPolicy: ConfigKey = "security.permissionsPolicy"
/// The configuration key for the `Strict-Transport-Security` header value (omitted when unset).
public static let strictTransportSecurity: ConfigKey = "security.strictTransportSecurity"
}
}