initial commit

tests/integration/webauthn_helpers_test.go

@@ -0,0 +1,78 @@
+/*
+ * 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 (
+	"bytes"
+	"crypto/ecdsa"
+	"crypto/rand"
+	"crypto/sha256"
+	"encoding/binary"
+	"testing"
+)
+
+// buildAuthenticationWithoutUV constructs an authentication response where the UV flag is not set.
+func buildAuthenticationWithoutUV(t testing.TB, device *webAuthnDevice, options webAuthnAuthenticationOptions) map[string]any {
+	t.Helper()
+
+	challenge := decodeBase64URL(t, options.Challenge)
+	clientData := map[string]any{
+		"type":        "webauthn.get",
+		"challenge":   encodeBase64URL(challenge),
+		"origin":      device.origin,
+		"crossOrigin": false,
+	}
+	clientDataJSON := mustJSON(t, clientData)
+
+	rpHash := sha256.Sum256([]byte(device.rpID))
+	flags := byte(0x01)
+
+	buf := &bytes.Buffer{}
+	buf.Write(rpHash[:])
+	buf.WriteByte(flags)
+
+	device.signCount++
+	if err := binary.Write(buf, binary.BigEndian, device.signCount); err != nil {
+		t.Fatalf("failed to write sign count: %v", err)
+	}
+
+	authData := buf.Bytes()
+	clientDataHash := sha256.Sum256(clientDataJSON)
+	sigInput := append(authData, clientDataHash[:]...)
+	digest := sha256.Sum256(sigInput)
+
+	signature, err := ecdsa.SignASN1(rand.Reader, device.privateKey, digest[:])
+	if err != nil {
+		t.Fatalf("failed to sign assertion: %v", err)
+	}
+
+	return map[string]any{
+		"id":                     encodeBase64URL(device.credentialID),
+		"rawId":                  encodeBase64URL(device.credentialID),
+		"type":                   "public-key",
+		"clientExtensionResults": map[string]any{},
+		"response": map[string]any{
+			"clientDataJSON":    encodeBase64URL(clientDataJSON),
+			"authenticatorData": encodeBase64URL(authData),
+			"signature":         encodeBase64URL(signature),
+			"userHandle":        encodeBase64URL(device.userHandle),
+		},
+	}
+}