WIP: new user management and authentication system, use go 1.16 embed

internal/server/auth.go

@@ -0,0 +1,83 @@
+package server
+
+import (
+	"sort"
+
+	"github.com/h44z/wg-portal/internal/authentication"
+
+	"github.com/gin-gonic/gin"
+	"github.com/h44z/wg-portal/internal/users"
+	"github.com/sirupsen/logrus"
+)
+
+// Auth auth struct
+type AuthManager struct {
+	Server      *Server
+	Group       *gin.RouterGroup // basic group for all providers (/auth)
+	providers   []authentication.AuthProvider
+	UserManager *users.Manager
+}
+
+// RegisterProvider register auth provider
+func (auth *AuthManager) RegisterProvider(provider authentication.AuthProvider) {
+	name := provider.GetName()
+	if auth.GetProvider(name) != nil {
+		logrus.Warnf("auth provider %v already registered", name)
+	}
+
+	provider.SetupRoutes(auth.Group)
+	auth.providers = append(auth.providers, provider)
+}
+
+// RegisterProviderWithoutError register auth provider if err is nil
+func (auth *AuthManager) RegisterProviderWithoutError(provider authentication.AuthProvider, err error) {
+	if err != nil {
+		logrus.Errorf("skipping provider registration: %v", err)
+		return
+	}
+	auth.RegisterProvider(provider)
+}
+
+// GetProvider get provider with name
+func (auth *AuthManager) GetProvider(name string) authentication.AuthProvider {
+	for _, provider := range auth.providers {
+		if provider.GetName() == name {
+			return provider
+		}
+	}
+	return nil
+}
+
+// GetProviders return registered providers
+func (auth *AuthManager) GetProviders() (providers []authentication.AuthProvider) {
+	for _, provider := range auth.providers {
+		providers = append(providers, provider)
+	}
+	return
+}
+
+// GetProviders return registered providers
+func (auth *AuthManager) GetProvidersForType(typ authentication.AuthProviderType) (providers []authentication.AuthProvider) {
+	for _, provider := range auth.providers {
+		if provider.GetType() == typ {
+			providers = append(providers, provider)
+		}
+	}
+
+	// order by priority
+	sort.SliceStable(providers, func(i, j int) bool {
+		return providers[i].GetPriority() < providers[j].GetPriority()
+	})
+
+	return
+}
+
+func NewAuthManager(server *Server) *AuthManager {
+	m := &AuthManager{
+		Server: server,
+	}
+
+	m.Group = m.Server.server.Group("/auth")
+
+	return m
+}