Move server-side relay auth out of shared and drop the unused validator

relay/auth/allow/allow_all.go

@@ -0,0 +1,10 @@
+package allow
+
+// Auth is a Validator that allows all connections.
+// Used this for testing purposes only.
+type Auth struct {
+}
+
+func (a *Auth) Validate(any) error {
+	return nil
+}

relay/auth/doc.go

@@ -0,0 +1,26 @@
+/*
+Package auth manages the authentication process with the relay server.
+
+Key Components:
+
+Validator: The Validator interface defines the Validate method. Any type that provides this method can be used as a
+Validator.
+
+Methods:
+
+Validate(any) error: This method is defined in the Validator interface and is used to validate the authentication.
+
+Usage:
+
+To create a new AllowAllAuth validator, simply instantiate it:
+
+	validator := &allow.Auth{}
+
+To validate the authentication, use the Validate method:
+
+	err := validator.Validate(credentials)
+
+This package provides a simple and effective way to manage authentication with the relay server, ensuring that the
+peers are authenticated properly.
+*/
+package auth

relay/auth/validator.go

@@ -0,0 +1,19 @@
+package auth
+
+import (
+	authv2 "github.com/netbirdio/netbird/shared/relay/auth/hmac/v2"
+)
+
+type TimedHMACValidator struct {
+	authenticatorV2 *authv2.Validator
+}
+
+func NewTimedHMACValidator(secret []byte) *TimedHMACValidator {
+	return &TimedHMACValidator{
+		authenticatorV2: authv2.NewValidator(secret),
+	}
+}
+
+func (a *TimedHMACValidator) Validate(credentials any) error {
+	return a.authenticatorV2.Validate(credentials)
+}

relay/cmd/root.go

@@ -19,10 +19,10 @@ import (
 	"github.com/spf13/cobra"
 
 	"github.com/netbirdio/netbird/encryption"
+	"github.com/netbirdio/netbird/relay/auth"
 	"github.com/netbirdio/netbird/relay/healthcheck"
 	"github.com/netbirdio/netbird/relay/server"
 	"github.com/netbirdio/netbird/shared/metrics"
-	"github.com/netbirdio/netbird/shared/relay/auth"
 	"github.com/netbirdio/netbird/stun"
 	"github.com/netbirdio/netbird/trustedproxy"
 	"github.com/netbirdio/netbird/util"

relay/test/benchmark_test.go

@@ -14,8 +14,8 @@ import (
 	"github.com/pion/turn/v3"
 
 	"github.com/netbirdio/netbird/client/iface"
+	"github.com/netbirdio/netbird/relay/auth/allow"
 	"github.com/netbirdio/netbird/relay/server"
-	"github.com/netbirdio/netbird/shared/relay/auth/allow"
 	"github.com/netbirdio/netbird/shared/relay/auth/hmac"
 	"github.com/netbirdio/netbird/shared/relay/client"
 	"github.com/netbirdio/netbird/util"