initial commit

tests/integration/sudo_mode_wrong_mfa_code_rejected_test.go

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package integration
+
+import (
+	"net/http"
+	"testing"
+)
+
+// TestSudoModeWrongMfaCodeRejected verifies that incorrect MFA codes
+// are rejected during sudo verification, preventing brute force attacks.
+func TestSudoModeWrongMfaCodeRejected(t *testing.T) {
+	client := newTestClient(t)
+	account := createTestAccount(t, client)
+
+	secret := newTotpSecret(t)
+	resp, err := client.postJSONWithAuth("/users/@me/mfa/totp/enable", map[string]string{
+		"secret": secret,
+		"code":   totpCodePrev(t, secret),
+	}, account.Token)
+	if err != nil {
+		t.Fatalf("failed to enable totp: %v", err)
+	}
+	if resp.StatusCode != http.StatusOK {
+		t.Fatalf("enable totp returned %d: %s", resp.StatusCode, readResponseBody(resp))
+	}
+	resp.Body.Close()
+
+	loginResp, err := client.postJSON("/auth/login", loginRequest{
+		Email:    account.Email,
+		Password: account.Password,
+	})
+	if err != nil {
+		t.Fatalf("failed to login: %v", err)
+	}
+	var login loginResponse
+	decodeJSONResponse(t, loginResp, &login)
+
+	resp, err = client.postJSON("/auth/login/mfa/totp", map[string]string{
+		"code":   totpCodeNow(t, secret),
+		"ticket": login.Ticket,
+	})
+	if err != nil {
+		t.Fatalf("failed to complete MFA login: %v", err)
+	}
+	var mfaLogin mfaLoginResponse
+	decodeJSONResponse(t, resp, &mfaLogin)
+	account.Token = mfaLogin.Token
+
+	wrongCodes := []string{
+		"000000",
+		"123456",
+		"999999",
+		"12345",
+		"1234567",
+		"abcdef",
+	}
+
+	for _, wrongCode := range wrongCodes {
+		resp, err := client.postJSONWithAuth("/users/@me/disable", map[string]string{
+			"mfa_method": "totp",
+			"mfa_code":   wrongCode,
+		}, account.Token)
+		if err != nil {
+			t.Fatalf("failed to make request with wrong MFA code: %v", err)
+		}
+		if resp.StatusCode != http.StatusBadRequest {
+			t.Fatalf("expected 400 for wrong MFA code %q, got %d: %s", wrongCode, resp.StatusCode, readResponseBody(resp))
+		}
+		resp.Body.Close()
+	}
+
+	t.Logf("all incorrect MFA codes were correctly rejected")
+}