Aktueller Stand

backend/node_modules/hono/dist/middleware/secure-headers/index.js

@@ -0,0 +1,6 @@
+// src/middleware/secure-headers/index.ts
+import { NONCE, secureHeaders } from "./secure-headers.js";
+export {
+  NONCE,
+  secureHeaders
+};

backend/node_modules/hono/dist/middleware/secure-headers/secure-headers.js

@@ -0,0 +1,166 @@
+// src/middleware/secure-headers/secure-headers.ts
+import { encodeBase64 } from "../../utils/encode.js";
+var HEADERS_MAP = {
+  crossOriginEmbedderPolicy: ["Cross-Origin-Embedder-Policy", "require-corp"],
+  crossOriginResourcePolicy: ["Cross-Origin-Resource-Policy", "same-origin"],
+  crossOriginOpenerPolicy: ["Cross-Origin-Opener-Policy", "same-origin"],
+  originAgentCluster: ["Origin-Agent-Cluster", "?1"],
+  referrerPolicy: ["Referrer-Policy", "no-referrer"],
+  strictTransportSecurity: ["Strict-Transport-Security", "max-age=15552000; includeSubDomains"],
+  xContentTypeOptions: ["X-Content-Type-Options", "nosniff"],
+  xDnsPrefetchControl: ["X-DNS-Prefetch-Control", "off"],
+  xDownloadOptions: ["X-Download-Options", "noopen"],
+  xFrameOptions: ["X-Frame-Options", "SAMEORIGIN"],
+  xPermittedCrossDomainPolicies: ["X-Permitted-Cross-Domain-Policies", "none"],
+  xXssProtection: ["X-XSS-Protection", "0"]
+};
+var DEFAULT_OPTIONS = {
+  crossOriginEmbedderPolicy: false,
+  crossOriginResourcePolicy: true,
+  crossOriginOpenerPolicy: true,
+  originAgentCluster: true,
+  referrerPolicy: true,
+  strictTransportSecurity: true,
+  xContentTypeOptions: true,
+  xDnsPrefetchControl: true,
+  xDownloadOptions: true,
+  xFrameOptions: true,
+  xPermittedCrossDomainPolicies: true,
+  xXssProtection: true,
+  removePoweredBy: true,
+  permissionsPolicy: {}
+};
+var generateNonce = () => {
+  const arrayBuffer = new Uint8Array(16);
+  crypto.getRandomValues(arrayBuffer);
+  return encodeBase64(arrayBuffer.buffer);
+};
+var NONCE = (ctx) => {
+  const key = "secureHeadersNonce";
+  const init = ctx.get(key);
+  const nonce = init || generateNonce();
+  if (init == null) {
+    ctx.set(key, nonce);
+  }
+  return `'nonce-${nonce}'`;
+};
+var secureHeaders = (customOptions) => {
+  const options = { ...DEFAULT_OPTIONS, ...customOptions };
+  const headersToSet = getFilteredHeaders(options);
+  const callbacks = [];
+  if (options.contentSecurityPolicy) {
+    const [callback, value] = getCSPDirectives(options.contentSecurityPolicy);
+    if (callback) {
+      callbacks.push(callback);
+    }
+    headersToSet.push(["Content-Security-Policy", value]);
+  }
+  if (options.contentSecurityPolicyReportOnly) {
+    const [callback, value] = getCSPDirectives(options.contentSecurityPolicyReportOnly);
+    if (callback) {
+      callbacks.push(callback);
+    }
+    headersToSet.push(["Content-Security-Policy-Report-Only", value]);
+  }
+  if (options.permissionsPolicy && Object.keys(options.permissionsPolicy).length > 0) {
+    headersToSet.push([
+      "Permissions-Policy",
+      getPermissionsPolicyDirectives(options.permissionsPolicy)
+    ]);
+  }
+  if (options.reportingEndpoints) {
+    headersToSet.push(["Reporting-Endpoints", getReportingEndpoints(options.reportingEndpoints)]);
+  }
+  if (options.reportTo) {
+    headersToSet.push(["Report-To", getReportToOptions(options.reportTo)]);
+  }
+  return async function secureHeaders2(ctx, next) {
+    const headersToSetForReq = callbacks.length === 0 ? headersToSet : callbacks.reduce((acc, cb) => cb(ctx, acc), headersToSet);
+    await next();
+    setHeaders(ctx, headersToSetForReq);
+    if (options?.removePoweredBy) {
+      ctx.res.headers.delete("X-Powered-By");
+    }
+  };
+};
+function getFilteredHeaders(options) {
+  return Object.entries(HEADERS_MAP).filter(([key]) => options[key]).map(([key, defaultValue]) => {
+    const overrideValue = options[key];
+    return typeof overrideValue === "string" ? [defaultValue[0], overrideValue] : defaultValue;
+  });
+}
+function getCSPDirectives(contentSecurityPolicy) {
+  const callbacks = [];
+  const resultValues = [];
+  for (const [directive, value] of Object.entries(contentSecurityPolicy)) {
+    const valueArray = Array.isArray(value) ? value : [value];
+    valueArray.forEach((value2, i) => {
+      if (typeof value2 === "function") {
+        const index = i * 2 + 2 + resultValues.length;
+        callbacks.push((ctx, values) => {
+          values[index] = value2(ctx, directive);
+        });
+      }
+    });
+    resultValues.push(
+      directive.replace(
+        /[A-Z]+(?![a-z])|[A-Z]/g,
+        (match, offset) => offset ? "-" + match.toLowerCase() : match.toLowerCase()
+      ),
+      ...valueArray.flatMap((value2) => [" ", value2]),
+      "; "
+    );
+  }
+  resultValues.pop();
+  return callbacks.length === 0 ? [void 0, resultValues.join("")] : [
+    (ctx, headersToSet) => headersToSet.map((values) => {
+      if (values[0] === "Content-Security-Policy" || values[0] === "Content-Security-Policy-Report-Only") {
+        const clone = values[1].slice();
+        callbacks.forEach((cb) => {
+          cb(ctx, clone);
+        });
+        return [values[0], clone.join("")];
+      } else {
+        return values;
+      }
+    }),
+    resultValues
+  ];
+}
+function getPermissionsPolicyDirectives(policy) {
+  return Object.entries(policy).map(([directive, value]) => {
+    const kebabDirective = camelToKebab(directive);
+    if (typeof value === "boolean") {
+      return `${kebabDirective}=${value ? "*" : "none"}`;
+    }
+    if (Array.isArray(value)) {
+      if (value.length === 0) {
+        return `${kebabDirective}=()`;
+      }
+      if (value.length === 1 && (value[0] === "*" || value[0] === "none")) {
+        return `${kebabDirective}=${value[0]}`;
+      }
+      const allowlist = value.map((item) => ["self", "src"].includes(item) ? item : `"${item}"`);
+      return `${kebabDirective}=(${allowlist.join(" ")})`;
+    }
+    return "";
+  }).filter(Boolean).join(", ");
+}
+function camelToKebab(str) {
+  return str.replace(/([a-z\d])([A-Z])/g, "$1-$2").toLowerCase();
+}
+function getReportingEndpoints(reportingEndpoints = []) {
+  return reportingEndpoints.map((endpoint) => `${endpoint.name}="${endpoint.url}"`).join(", ");
+}
+function getReportToOptions(reportTo = []) {
+  return reportTo.map((option) => JSON.stringify(option)).join(", ");
+}
+function setHeaders(ctx, headersToSet) {
+  headersToSet.forEach(([header, value]) => {
+    ctx.res.headers.set(header, value);
+  });
+}
+export {
+  NONCE,
+  secureHeaders
+};