Added security scripts support

2026-09-19 22:07:57 +02:00
parent 1186f4f620
commit 9101a5b48e
17 changed files with 404 additions and 42 deletions
@@ -0,0 +1,107 @@
+/**
+ * Builds a Content-Security-Policy string with the hard OWASP/Lighthouse-required
+ * directives baked in, and opt-in sources for common third parties. Solves the
+ * real risk of hand-writing raw CSP per project and forgetting `base-uri 'self'`
+ * or `object-src 'none'`.
+ *
+ * CSP still lives in the project (it lists the project's own domains), but this
+ * helper standardizes the skeleton so every project's CSP has the same hardened
+ * base — you only flip flags for what the project actually loads.
+ *
+ * Returns { key, value } ready for buildSecurityHeaders `additional`:
+ *
+ *   import { buildCsp, buildSecurityHeaders } from '@intecion/ipal-kit'
+ *   const csp = buildCsp({
+ *     mode: 'report-only',            // start here; switch to 'enforce' when clean
+ *     r2Url: process.env.R2_PUBLIC_URL,
+ *     turnstile: true, analytics: true,
+ *   })
+ *   const headers = buildSecurityHeaders({ hsts: prod, additional: [csp] })
+ *
+ * Deploy CSP carefully: start with mode:'report-only', check the console for
+ * violations across the whole site (forms/Turnstile, gallery/R2, embeds), add
+ * missing sources via `extra`, THEN switch to 'enforce'. See docs/security.md.
+ */ export function buildCsp(args = {}) {
+    const { analytics, extra = {}, googleMaps, mode = 'enforce', r2Url, turnstile, youtube } = args;
+    const src = {
+        'default-src': [
+            "'self'"
+        ],
+        // 'unsafe-inline' is hard to avoid with Next/analytics; 'unsafe-eval' is NOT
+        // added by default (weakens CSP) — add via extra only if a library needs it.
+        'connect-src': [
+            "'self'"
+        ],
+        'font-src': [
+            "'self'",
+            'https://fonts.gstatic.com',
+            'data:'
+        ],
+        'form-action': [
+            "'self'"
+        ],
+        'frame-src': [],
+        'img-src': [
+            "'self'",
+            'data:',
+            'blob:'
+        ],
+        'script-src': [
+            "'self'",
+            "'unsafe-inline'"
+        ],
+        'style-src': [
+            "'self'",
+            "'unsafe-inline'",
+            'https://fonts.googleapis.com'
+        ],
+        // HARD defaults (OWASP/Lighthouse) — always on, no reason to omit:
+        'base-uri': [
+            "'self'"
+        ],
+        'frame-ancestors': [
+            "'none'"
+        ],
+        'object-src': [
+            "'none'"
+        ]
+    };
+    if (r2Url) {
+        src['img-src'].push(r2Url);
+    }
+    if (turnstile) {
+        src['script-src'].push('https://challenges.cloudflare.com');
+        src['frame-src'].push('https://challenges.cloudflare.com');
+        src['connect-src'].push('https://challenges.cloudflare.com');
+    }
+    if (analytics) {
+        src['script-src'].push('https://www.googletagmanager.com');
+        src['connect-src'].push('https://www.google-analytics.com', 'https://www.googletagmanager.com');
+        src['img-src'].push('https://www.google-analytics.com', 'https://www.googletagmanager.com');
+    }
+    if (youtube) {
+        src['frame-src'].push('https://www.youtube.com', 'https://www.youtube-nocookie.com');
+    }
+    if (googleMaps) {
+        src['frame-src'].push('https://www.google.com', 'https://maps.google.com');
+        src['script-src'].push('https://maps.googleapis.com');
+        src['img-src'].push('https://maps.gstatic.com', 'https://*.googleapis.com');
+    }
+    // Merge caller extras.
+    for (const [dir, values] of Object.entries(extra)){
+        if (values && values.length) {
+            src[dir] = [
+                ...src[dir] ?? [],
+                ...values
+            ];
+        }
+    }
+    const value = Object.entries(src).filter(([, values])=>values.length > 0).map(([dir, values])=>`${dir} ${values.join(' ')}`).join('; ');
+    const key = mode === 'report-only' ? 'Content-Security-Policy-Report-Only' : 'Content-Security-Policy';
+    return {
+        key,
+        value
+    };
+}
+
+//# sourceMappingURL=buildCsp.js.map