Install Impeccable skill for Codex

.agents/skills/impeccable/scripts/detect-csp.mjs

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+/**
+ * Scan a project tree for Content-Security-Policy signals and classify the
+ * shape so the agent knows which patch template to propose.
+ *
+ * Used at first-time `live.mjs` setup. Mechanical (grep-based) — no network,
+ * no dev server, no JS evaluation. The classification drives a user-facing
+ * consent prompt; the agent does the actual patch writing.
+ *
+ * Shapes are named by patch mechanism, not framework origin:
+ *   - "append-arrays":  CSP defined as structured directive arrays. Patch
+ *                       appends a dev-only localhost entry. Covers:
+ *                         - Monorepo helpers with additional*Src options
+ *                           (e.g. createBaseNextConfig for Next)
+ *                         - SvelteKit kit.csp.directives
+ *                         - nuxt-security module's contentSecurityPolicy
+ *   - "append-string":  CSP built as a literal value string. Patch splices
+ *                       a dev-only token into script-src and connect-src.
+ *                       Covers:
+ *                         - Inline Next.js headers() with CSP string
+ *                         - Nuxt routeRules / nitro.routeRules CSP headers
+ *   - "middleware":     CSP set dynamically in middleware.{ts,js}.
+ *                       Detected but not auto-patched in v1.
+ *   - "meta-tag":       <meta http-equiv="Content-Security-Policy"> in
+ *                       layout files. Detected but not auto-patched in v1.
+ *   - null:             no CSP signals found; no patch needed.
+ */
+
+import fs from 'node:fs';
+import path from 'node:path';
+
+const SKIP_DIRS = new Set([
+  'node_modules',
+  '.git',
+  '.next',
+  '.turbo',
+  '.svelte-kit',
+  '.nuxt',
+  '.astro',
+  'dist',
+  'build',
+  'out',
+  '.vercel',
+]);
+
+const SCAN_EXTS = new Set(['.js', '.mjs', '.cjs', '.ts', '.mts', '.cts', '.tsx', '.jsx']);
+const LAYOUT_EXTS = new Set(['.tsx', '.jsx', '.astro', '.vue', '.svelte', '.html']);
+const MAX_DEPTH = 6;
+const MAX_READ_BYTES = 64 * 1024;
+
+// append-arrays signals: CSP expressed as structured directive arrays
+const MONOREPO_HELPER_SIGNALS = [
+  /\bbuildCSPConfig\b/,
+  /\bbuildSecurityHeaders\b/,
+  /\badditionalScriptSrc\b/,
+  /\badditionalConnectSrc\b/,
+  /\bcreateBaseNextConfig\b/,
+];
+const SVELTEKIT_CSP_SIGNALS = [
+  /\bkit\s*:/,
+  /\bcsp\s*:/,
+  /\bdirectives\s*:/,
+];
+const NUXT_SECURITY_SIGNALS = [
+  /['"]nuxt-security['"]/,
+  /\bcontentSecurityPolicy\b/,
+];
+
+// append-string signals: CSP written as a literal value string
+const INLINE_HEADER_SIGNALS = [
+  /["']Content-Security-Policy["']/i,
+  /\bscript-src\b/,
+  /\bconnect-src\b/,
+];
+const NUXT_ROUTE_RULES_SIGNALS = [
+  /\brouteRules\b/,
+  /Content-Security-Policy/i,
+  /\bscript-src\b/,
+];
+
+const MIDDLEWARE_HINT = /headers\.set\(\s*["']Content-Security-Policy["']/i;
+const META_TAG_HINT = /http-equiv\s*=\s*["']Content-Security-Policy["']/i;
+
+/**
+ * @param {string} cwd Project root.
+ * @returns {{ shape: string|null, signals: string[] }}
+ */
+export function detectCsp(cwd = process.cwd()) {
+  const hits = { appendArrays: [], appendString: [], middleware: [], metaTag: [] };
+
+  walk(cwd, cwd, 0, (absPath, relPath, body) => {
+    const ext = path.extname(absPath);
+    const base = path.basename(absPath).toLowerCase();
+    const isConfig = (name) =>
+      new RegExp('(^|/)' + name + '\\.config\\.').test(relPath);
+
+    // === append-arrays candidates ===
+
+    // Monorepo CSP helper: packages/*/src/.../(config|security)/*
+    if (SCAN_EXTS.has(ext) &&
+        /packages\/[^/]+\/src\/.*(config|next-config|security)/.test(relPath) &&
+        MONOREPO_HELPER_SIGNALS.some((re) => re.test(body))) {
+      hits.appendArrays.push(relPath);
+      return;
+    }
+
+    // SvelteKit kit.csp.directives
+    if (SCAN_EXTS.has(ext) && isConfig('svelte') &&
+        SVELTEKIT_CSP_SIGNALS.every((re) => re.test(body))) {
+      hits.appendArrays.push(relPath);
+      return;
+    }
+
+    // Nuxt nuxt-security module
+    if (SCAN_EXTS.has(ext) && isConfig('nuxt') &&
+        NUXT_SECURITY_SIGNALS.every((re) => re.test(body))) {
+      hits.appendArrays.push(relPath);
+      return;
+    }
+
+    // === append-string candidates ===
+
+    // Inline headers in Next/Nuxt/SvelteKit/Astro/Vite config
+    if (SCAN_EXTS.has(ext) &&
+        /(^|\/)(next|nuxt|vite|astro|svelte)\.config\./.test(relPath) &&
+        INLINE_HEADER_SIGNALS.every((re) => re.test(body))) {
+      // Nuxt routeRules is a sub-shape of append-string; we already covered
+      // nuxt-security above via return, so any remaining Nuxt CSP match here
+      // is a route-rules / inline-headers case. Either way, same patch
+      // mechanism.
+      hits.appendString.push(relPath);
+      return;
+    }
+
+    // === detect-only shapes ===
+
+    if ((base === 'middleware.ts' || base === 'middleware.js' || base === 'middleware.mjs') &&
+        MIDDLEWARE_HINT.test(body)) {
+      hits.middleware.push(relPath);
+    }
+
+    if (LAYOUT_EXTS.has(ext) && META_TAG_HINT.test(body)) {
+      hits.metaTag.push(relPath);
+    }
+  });
+
+  // Priority: append-arrays > append-string > middleware > meta-tag.
+  // Structured patches are safer than string splices; runtime and HTML
+  // injection patches are less reliable and v1 doesn't auto-apply them.
+  if (hits.appendArrays.length > 0) {
+    return { shape: 'append-arrays', signals: hits.appendArrays };
+  }
+  if (hits.appendString.length > 0) {
+    return { shape: 'append-string', signals: hits.appendString };
+  }
+  if (hits.middleware.length > 0) {
+    return { shape: 'middleware', signals: hits.middleware };
+  }
+  if (hits.metaTag.length > 0) {
+    return { shape: 'meta-tag', signals: hits.metaTag };
+  }
+  return { shape: null, signals: [] };
+}
+
+function walk(root, dir, depth, visit) {
+  if (depth > MAX_DEPTH) return;
+  let entries;
+  try { entries = fs.readdirSync(dir, { withFileTypes: true }); }
+  catch { return; }
+
+  for (const entry of entries) {
+    const abs = path.join(dir, entry.name);
+    if (entry.isDirectory()) {
+      if (SKIP_DIRS.has(entry.name)) continue;
+      walk(root, abs, depth + 1, visit);
+      continue;
+    }
+    if (!entry.isFile()) continue;
+    const ext = path.extname(entry.name);
+    if (!SCAN_EXTS.has(ext) && !LAYOUT_EXTS.has(ext)) continue;
+    let body;
+    try {
+      const fd = fs.openSync(abs, 'r');
+      try {
+        const buf = Buffer.alloc(MAX_READ_BYTES);
+        const n = fs.readSync(fd, buf, 0, MAX_READ_BYTES, 0);
+        body = buf.slice(0, n).toString('utf-8');
+      } finally { fs.closeSync(fd); }
+    } catch { continue; }
+    visit(abs, path.relative(root, abs), body);
+  }
+}
+
+// CLI mode
+const _running = process.argv[1];
+if (_running?.endsWith('detect-csp.mjs') || _running?.endsWith('detect-csp.mjs/')) {
+  const result = detectCsp(process.cwd());
+  console.log(JSON.stringify(result, null, 2));
+}