Harden auth: setup secret, throttling, session destroy, secure cookies.

Replace username-based admin bootstrap with a one-time setup secret, rate-limit login/register, equalize login bcrypt timing, cap passwords at 72 bytes, destroy sessions on logout, and require Secure cookies when PORT is set.
2026-08-22 11:47:42 -07:00
parent 96b0ce795a
commit 59513ab75e
9 changed files with 287 additions and 50 deletions
@@ -0,0 +1,57 @@
+package web
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func TestPasswordMaxBytes(t *testing.T) {
+	if ok, _ := passwordValid(strings.Repeat("a", 8)); !ok {
+		t.Fatal("8 ascii runes should pass")
+	}
+	if ok, msg := passwordValid(strings.Repeat("a", 73)); ok || !strings.Contains(msg, "72") {
+		t.Fatalf("73 bytes should fail: ok=%v msg=%q", ok, msg)
+	}
+}
+
+func TestLogoutDestroysSession(t *testing.T) {
+	srv, _ := newTestServer(t, Config{})
+	h := srv.Handler()
+	name := uniq("out")
+	cookies := registerUser(t, h, name, "hunter22")
+
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(http.MethodGet, "/profile", nil)
+	for _, c := range cookies {
+		req.AddCookie(c)
+	}
+	h.ServeHTTP(rec, req)
+	if rec.Code != 200 {
+		t.Fatalf("profile before logout %d", rec.Code)
+	}
+	csrf := csrfFrom(rec.Body.String())
+	form := strings.NewReader("_csrf=" + csrf)
+	req = httptest.NewRequest(http.MethodPost, "/logout", form)
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	for _, c := range cookies {
+		req.AddCookie(c)
+	}
+	rec = httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != http.StatusSeeOther {
+		t.Fatalf("logout %d", rec.Code)
+	}
+	postLogout := mergeCookies(cookies, rec.Result().Cookies())
+
+	req = httptest.NewRequest(http.MethodGet, "/profile", nil)
+	for _, c := range postLogout {
+		req.AddCookie(c)
+	}
+	rec = httptest.NewRecorder()
+	h.ServeHTTP(rec, req)
+	if rec.Code != http.StatusSeeOther {
+		t.Fatalf("profile after logout should redirect, got %d", rec.Code)
+	}
+}