add auther config

pkg/registry/auther.go

@@ -0,0 +1,62 @@
+package registry
+
+import (
+	"sync"
+
+	"github.com/go-gost/gost/pkg/auth"
+)
+
+var (
+	autherReg = &autherRegistry{}
+)
+
+func Auther() *autherRegistry {
+	return autherReg
+}
+
+type autherRegistry struct {
+	m sync.Map
+}
+
+func (r *autherRegistry) Register(name string, auth auth.Authenticator) error {
+	if _, loaded := r.m.LoadOrStore(name, auth); loaded {
+		return ErrDup
+	}
+
+	return nil
+}
+
+func (r *autherRegistry) Unregister(name string) {
+	r.m.Delete(name)
+}
+
+func (r *autherRegistry) IsRegistered(name string) bool {
+	_, ok := r.m.Load(name)
+	return ok
+}
+
+func (r *autherRegistry) Get(name string) auth.Authenticator {
+	if name == "" {
+		return nil
+	}
+	return &autherWrapper{name: name}
+}
+
+func (r *autherRegistry) get(name string) auth.Authenticator {
+	if v, ok := r.m.Load(name); ok {
+		return v.(auth.Authenticator)
+	}
+	return nil
+}
+
+type autherWrapper struct {
+	name string
+}
+
+func (w *autherWrapper) Authenticate(user, password string) bool {
+	v := autherReg.get(w.name)
+	if v == nil {
+		return true
+	}
+	return v.Authenticate(user, password)
+}