auth: publish passkey foundations preview

third_party/go-webauthn/webauthn/util_blackbox_test.go

@@ -0,0 +1,66 @@
+package webauthn_test
+
+import (
+	"crypto/subtle"
+	"fmt"
+
+	"github.com/go-webauthn/webauthn/webauthn"
+)
+
+type defaultUser struct {
+	id          []byte
+	credentials []webauthn.Credential
+}
+
+var _ webauthn.User = (*defaultUser)(nil)
+
+func (user *defaultUser) WebAuthnID() []byte {
+	return user.id
+}
+
+func (user *defaultUser) WebAuthnName() string {
+	return "newUser"
+}
+
+func (user *defaultUser) WebAuthnDisplayName() string {
+	return "New User"
+}
+
+func (user *defaultUser) WebAuthnCredentials() []webauthn.Credential {
+	return user.credentials
+}
+
+var testUser *defaultUser
+
+// GetUser is a crude and abstract example of getting users.
+func GetUser() *defaultUser {
+	return &defaultUser{}
+}
+
+// LoadUser is a crude and abstract example of loading users.
+func LoadUser() (user *defaultUser, err error) {
+	if testUser != nil {
+		return testUser, nil
+	}
+
+	return GetUser(), nil
+}
+
+func LoadUserByHandle(handle []byte) (user *defaultUser, err error) {
+	if testUser != nil {
+		return nil, fmt.Errorf("not initialized")
+	}
+
+	if subtle.ConstantTimeCompare(testUser.id, handle) != 1 {
+		return nil, fmt.Errorf("not found")
+	}
+
+	return testUser, nil
+}
+
+// SaveUser is a crude and abstract example of saving users.
+func SaveUser(user *defaultUser) (err error) {
+	testUser = user
+
+	return nil
+}