security headers, notifications, GDPR consent, masked fields

2026-08-21 19:03:14 +02:00
parent 81fa409513
commit 05b3dc8cb1
37 changed files with 569 additions and 14 deletions
@@ -0,0 +1,81 @@
+/**
+ * A single HTTP header, in the shape Next.js next.config headers() expects.
+ */ /**
+ * Builds the generic, project-independent security headers every site should
+ * send: HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy,
+ * Permissions-Policy. These are identical across projects, so the plugin owns
+ * the boilerplate; the client spreads the result into next.config's headers().
+ *
+ * Content-Security-Policy is deliberately excluded: a useful CSP enumerates the
+ * exact domains a project loads from (its CDN, analytics, embeds), so it can't
+ * be generic without being either too loose (useless) or too strict (breaks the
+ * site). Add your project's CSP via `additional`.
+ *
+ * @example
+ * // next.config.ts
+ * import { buildSecurityHeaders } from '@intecion/ipal-kit'
+ * const securityHeaders = buildSecurityHeaders({
+ *   hsts: process.env.NODE_ENV === 'production',   // off in dev over http
+ *   additional: [
+ *     { key: 'Content-Security-Policy', value: "default-src 'self'; ..." },
+ *   ],
+ * })
+ * const nextConfig = {
+ *   async headers() {
+ *     return [{ source: '/:path*', headers: securityHeaders }]
+ *   },
+ * }
+ */ export function buildSecurityHeaders(args = {}) {
+    const { additional = [], frameOptions = 'DENY', hsts = true, hstsIncludeSubDomains = true, hstsMaxAge = 63072000, hstsPreload = false, permissionsPolicy = 'camera=(), microphone=(), geolocation=()', referrerPolicy = 'strict-origin-when-cross-origin' } = args;
+    const headers = [];
+    if (hsts) {
+        const parts = [
+            `max-age=${hstsMaxAge}`
+        ];
+        if (hstsIncludeSubDomains) {
+            parts.push('includeSubDomains');
+        }
+        if (hstsPreload) {
+            parts.push('preload');
+        }
+        headers.push({
+            key: 'Strict-Transport-Security',
+            value: parts.join('; ')
+        });
+    }
+    if (frameOptions) {
+        headers.push({
+            key: 'X-Frame-Options',
+            value: frameOptions
+        });
+    }
+    // Prevents MIME-type sniffing — always safe, no project specifics.
+    headers.push({
+        key: 'X-Content-Type-Options',
+        value: 'nosniff'
+    });
+    if (referrerPolicy) {
+        headers.push({
+            key: 'Referrer-Policy',
+            value: referrerPolicy
+        });
+    }
+    if (permissionsPolicy) {
+        headers.push({
+            key: 'Permissions-Policy',
+            value: permissionsPolicy
+        });
+    }
+    // Merge additional: same-key entries override the defaults above.
+    for (const extra of additional){
+        const i = headers.findIndex((h)=>h.key.toLowerCase() === extra.key.toLowerCase());
+        if (i >= 0) {
+            headers[i] = extra;
+        } else {
+            headers.push(extra);
+        }
+    }
+    return headers;
+}
+
+//# sourceMappingURL=buildSecurityHeaders.js.map