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190import { describe, it, expect } from "vitest";
import {
isAllowedDevOrigin,
isCrossSiteNoCorsRequest,
validateDevRequest,
generateDevOriginCheckCode,
} from "../packages/vinext/src/server/dev-origin-check.js";
describe("dev origin check", () => {
// ── isAllowedDevOrigin ────────────────────────────────────────────────
describe("isAllowedDevOrigin", () => {
it("allows requests with no Origin header", () => {
expect(isAllowedDevOrigin(null, "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin(undefined, "localhost:5173")).toBe(true);
});
it("allows requests with Origin 'null' (sandboxed iframe, privacy)", () => {
expect(isAllowedDevOrigin("null", "localhost:5173")).toBe(true);
});
it("allows localhost origins (any port)", () => {
expect(isAllowedDevOrigin("http://localhost:5173", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("http://localhost:3000", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("http://localhost", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("https://localhost:8443", "localhost:5173")).toBe(true);
});
it("allows 127.0.0.1 origins", () => {
expect(isAllowedDevOrigin("http://127.0.0.1:5173", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("http://127.0.0.1:3000", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("http://127.0.0.1", "localhost:5173")).toBe(true);
});
it("allows [::1] (IPv6 loopback) origins", () => {
expect(isAllowedDevOrigin("http://[::1]:5173", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("http://[::1]", "localhost:5173")).toBe(true);
});
it("allows subdomains of localhost", () => {
expect(isAllowedDevOrigin("http://storybook.localhost:6006", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("http://foo.localhost", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("http://a.b.localhost:3000", "localhost:5173")).toBe(true);
});
it("blocks external origins", () => {
expect(isAllowedDevOrigin("https://evil.com", "localhost:5173")).toBe(false);
expect(isAllowedDevOrigin("http://external.io:5173", "localhost:5173")).toBe(false);
expect(isAllowedDevOrigin("https://google.com", "localhost:5173")).toBe(false);
});
it("blocks origins that look like localhost but aren't", () => {
// "notlocalhost" should not match
expect(isAllowedDevOrigin("http://notlocalhost:5173", "localhost:5173")).toBe(false);
// "localhost.evil.com" should not match
expect(isAllowedDevOrigin("http://localhost.evil.com", "localhost:5173")).toBe(false);
});
it("blocks malformed origin headers", () => {
expect(isAllowedDevOrigin("not-a-url", "localhost:5173")).toBe(false);
expect(isAllowedDevOrigin("javascript:alert(1)", "localhost:5173")).toBe(false);
});
it("allows same-origin by matching Host header", () => {
// Origin hostname matches Host hostname
expect(isAllowedDevOrigin("http://myapp.local:5173", "myapp.local:5173")).toBe(true);
expect(isAllowedDevOrigin("http://192.168.1.5:3000", "192.168.1.5:3000")).toBe(true);
});
it("same-origin check ignores port differences", () => {
// Hostname matches even though port differs
expect(isAllowedDevOrigin("http://myapp.local:3000", "myapp.local:5173")).toBe(true);
});
it("same-origin check handles comma-separated Host header", () => {
expect(isAllowedDevOrigin("http://myapp.local:3000", "myapp.local:5173, proxy:8080")).toBe(true);
});
it("allows origins in the allowedDevOrigins list", () => {
const allowed = ["custom-origin.com", "*.my-domain.com"];
expect(isAllowedDevOrigin("http://custom-origin.com:3000", "localhost:5173", allowed)).toBe(true);
expect(isAllowedDevOrigin("http://sub.my-domain.com", "localhost:5173", allowed)).toBe(true);
expect(isAllowedDevOrigin("http://my-domain.com", "localhost:5173", allowed)).toBe(true);
expect(isAllowedDevOrigin("http://a.b.my-domain.com", "localhost:5173", allowed)).toBe(true);
});
it("rejects origins not in the allowedDevOrigins list", () => {
const allowed = ["custom-origin.com"];
expect(isAllowedDevOrigin("https://other.com", "localhost:5173", allowed)).toBe(false);
});
it("handles case-insensitive hostnames", () => {
expect(isAllowedDevOrigin("http://LOCALHOST:5173", "localhost:5173")).toBe(true);
expect(isAllowedDevOrigin("http://LocalHost:5173", "localhost:5173")).toBe(true);
});
});
// ── isCrossSiteNoCorsRequest ──────────────────────────────────────────
describe("isCrossSiteNoCorsRequest", () => {
it("detects cross-site no-cors requests", () => {
expect(isCrossSiteNoCorsRequest("cross-site", "no-cors")).toBe(true);
});
it("allows same-origin requests", () => {
expect(isCrossSiteNoCorsRequest("same-origin", "cors")).toBe(false);
expect(isCrossSiteNoCorsRequest("same-origin", "no-cors")).toBe(false);
});
it("allows same-site requests", () => {
expect(isCrossSiteNoCorsRequest("same-site", "no-cors")).toBe(false);
});
it("allows cross-site CORS requests (fetch with mode:cors)", () => {
expect(isCrossSiteNoCorsRequest("cross-site", "cors")).toBe(false);
});
it("handles missing headers", () => {
expect(isCrossSiteNoCorsRequest(null, null)).toBe(false);
expect(isCrossSiteNoCorsRequest(undefined, undefined)).toBe(false);
expect(isCrossSiteNoCorsRequest("cross-site", null)).toBe(false);
});
});
// ── validateDevRequest ────────────────────────────────────────────────
describe("validateDevRequest", () => {
it("allows requests with no Origin and no Sec-Fetch headers", () => {
expect(validateDevRequest({ host: "localhost:5173" })).toBeNull();
});
it("allows localhost origin requests", () => {
expect(validateDevRequest({
origin: "http://localhost:5173",
host: "localhost:5173",
})).toBeNull();
});
it("blocks cross-site no-cors requests (script tag exfiltration)", () => {
const result = validateDevRequest({
origin: "https://evil.com",
host: "localhost:5173",
"sec-fetch-site": "cross-site",
"sec-fetch-mode": "no-cors",
});
expect(result).not.toBeNull();
expect(result).toContain("cross-site no-cors");
});
it("blocks cross-origin fetch requests", () => {
const result = validateDevRequest({
origin: "https://evil.com",
host: "localhost:5173",
});
expect(result).not.toBeNull();
expect(result).toContain("evil.com");
});
it("passes allowedDevOrigins to origin check", () => {
expect(validateDevRequest(
{ origin: "http://custom.com", host: "localhost:5173" },
["custom.com"],
)).toBeNull();
});
});
// ── generateDevOriginCheckCode ────────────────────────────────────────
describe("generateDevOriginCheckCode", () => {
it("generates code with the validation function", () => {
const code = generateDevOriginCheckCode();
expect(code).toContain("__validateDevRequestOrigin");
expect(code).toContain("__safeDevHosts");
expect(code).toContain("sec-fetch-mode");
expect(code).toContain("sec-fetch-site");
});
it("embeds allowed dev origins when provided", () => {
const code = generateDevOriginCheckCode(["my-proxy.com", "*.staging.com"]);
expect(code).toContain("my-proxy.com");
expect(code).toContain("*.staging.com");
});
it("embeds empty array when no origins provided", () => {
const code = generateDevOriginCheckCode();
expect(code).toContain("__allowedDevOrigins = []");
});
});
});