fix: avoid queries panic

internal/controller/context_controller.go

@@ -46,19 +46,19 @@ type ContextControllerConfig struct {
 }
 
 type ContextController struct {
-	Config ContextControllerConfig
-	Router *gin.RouterGroup
+	config ContextControllerConfig
+	router *gin.RouterGroup
 }
 
 func NewContextController(config ContextControllerConfig, router *gin.RouterGroup) *ContextController {
 	return &ContextController{
-		Config: config,
-		Router: router,
+		config: config,
+		router: router,
 	}
 }
 
 func (controller *ContextController) SetupRoutes() {
-	contextGroup := controller.Router.Group("/context")
+	contextGroup := controller.router.Group("/context")
 	contextGroup.GET("/user", controller.userContextHandler)
 	contextGroup.GET("/app", controller.appContextHandler)
 }
@@ -91,18 +91,18 @@ func (controller *ContextController) userContextHandler(c *gin.Context) {
 }
 
 func (controller *ContextController) appContextHandler(c *gin.Context) {
-	appUrl, _ := url.Parse(controller.Config.AppURL) // no need to check error, validated on startup
+	appUrl, _ := url.Parse(controller.config.AppURL) // no need to check error, validated on startup
 
 	c.JSON(200, AppContextResponse{
 		Status:                200,
 		Message:               "Success",
-		ConfiguredProviders:   controller.Config.ConfiguredProviders,
-		Title:                 controller.Config.Title,
-		GenericName:           controller.Config.GenericName,
+		ConfiguredProviders:   controller.config.ConfiguredProviders,
+		Title:                 controller.config.Title,
+		GenericName:           controller.config.GenericName,
 		AppURL:                fmt.Sprintf("%s://%s", appUrl.Scheme, appUrl.Host),
-		RootDomain:            controller.Config.RootDomain,
-		ForgotPasswordMessage: controller.Config.ForgotPasswordMessage,
-		BackgroundImage:       controller.Config.BackgroundImage,
-		OAuthAutoRedirect:     controller.Config.OAuthAutoRedirect,
+		RootDomain:            controller.config.RootDomain,
+		ForgotPasswordMessage: controller.config.ForgotPasswordMessage,
+		BackgroundImage:       controller.config.BackgroundImage,
+		OAuthAutoRedirect:     controller.config.OAuthAutoRedirect,
 	})
 }

internal/controller/health_controller.go

@@ -3,18 +3,18 @@ package controller
 import "github.com/gin-gonic/gin"
 
 type HealthController struct {
-	Router *gin.RouterGroup
+	router *gin.RouterGroup
 }
 
 func NewHealthController(router *gin.RouterGroup) *HealthController {
 	return &HealthController{
-		Router: router,
+		router: router,
 	}
 }
 
 func (controller *HealthController) SetupRoutes() {
-	controller.Router.GET("/health", controller.healthHandler)
-	controller.Router.HEAD("/health", controller.healthHandler)
+	controller.router.GET("/health", controller.healthHandler)
+	controller.router.HEAD("/health", controller.healthHandler)
 }
 
 func (controller *HealthController) healthHandler(c *gin.Context) {

internal/controller/oauth_controller.go

@@ -27,23 +27,23 @@ type OAuthControllerConfig struct {
 }
 
 type OAuthController struct {
-	Config OAuthControllerConfig
-	Router *gin.RouterGroup
-	Auth   *service.AuthService
-	Broker *service.OAuthBrokerService
+	config OAuthControllerConfig
+	router *gin.RouterGroup
+	auth   *service.AuthService
+	broker *service.OAuthBrokerService
 }
 
 func NewOAuthController(config OAuthControllerConfig, router *gin.RouterGroup, auth *service.AuthService, broker *service.OAuthBrokerService) *OAuthController {
 	return &OAuthController{
-		Config: config,
-		Router: router,
-		Auth:   auth,
-		Broker: broker,
+		config: config,
+		router: router,
+		auth:   auth,
+		broker: broker,
 	}
 }
 
 func (controller *OAuthController) SetupRoutes() {
-	oauthGroup := controller.Router.Group("/oauth")
+	oauthGroup := controller.router.Group("/oauth")
 	oauthGroup.GET("/url/:provider", controller.oauthURLHandler)
 	oauthGroup.GET("/callback/:provider", controller.oauthCallbackHandler)
 }
@@ -61,7 +61,7 @@ func (controller *OAuthController) oauthURLHandler(c *gin.Context) {
 		return
 	}
 
-	service, exists := controller.Broker.GetService(req.Provider)
+	service, exists := controller.broker.GetService(req.Provider)
 
 	if !exists {
 		log.Warn().Msgf("OAuth provider not found: %s", req.Provider)
@@ -74,13 +74,13 @@ func (controller *OAuthController) oauthURLHandler(c *gin.Context) {
 
 	state := service.GenerateState()
 	authURL := service.GetAuthURL(state)
-	c.SetCookie(controller.Config.CSRFCookieName, state, int(time.Hour.Seconds()), "/", fmt.Sprintf(".%s", controller.Config.RootDomain), controller.Config.SecureCookie, true)
+	c.SetCookie(controller.config.CSRFCookieName, state, int(time.Hour.Seconds()), "/", fmt.Sprintf(".%s", controller.config.RootDomain), controller.config.SecureCookie, true)
 
 	redirectURI := c.Query("redirect_uri")
 
-	if redirectURI != "" && utils.IsRedirectSafe(redirectURI, controller.Config.RootDomain) {
+	if redirectURI != "" && utils.IsRedirectSafe(redirectURI, controller.config.RootDomain) {
 		log.Debug().Msg("Setting redirect URI cookie")
-		c.SetCookie(controller.Config.RedirectCookieName, redirectURI, int(time.Hour.Seconds()), "/", fmt.Sprintf(".%s", controller.Config.RootDomain), controller.Config.SecureCookie, true)
+		c.SetCookie(controller.config.RedirectCookieName, redirectURI, int(time.Hour.Seconds()), "/", fmt.Sprintf(".%s", controller.config.RootDomain), controller.config.SecureCookie, true)
 	}
 
 	c.JSON(200, gin.H{
@@ -104,58 +104,58 @@ func (controller *OAuthController) oauthCallbackHandler(c *gin.Context) {
 	}
 
 	state := c.Query("state")
-	csrfCookie, err := c.Cookie(controller.Config.CSRFCookieName)
+	csrfCookie, err := c.Cookie(controller.config.CSRFCookieName)
 
 	if err != nil || state != csrfCookie {
 		log.Warn().Err(err).Msg("CSRF token mismatch or cookie missing")
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 		return
 	}
 
-	c.SetCookie(controller.Config.CSRFCookieName, "", -1, "/", fmt.Sprintf(".%s", controller.Config.RootDomain), controller.Config.SecureCookie, true)
+	c.SetCookie(controller.config.CSRFCookieName, "", -1, "/", fmt.Sprintf(".%s", controller.config.RootDomain), controller.config.SecureCookie, true)
 
 	code := c.Query("code")
-	service, exists := controller.Broker.GetService(req.Provider)
+	service, exists := controller.broker.GetService(req.Provider)
 
 	if !exists {
 		log.Warn().Msgf("OAuth provider not found: %s", req.Provider)
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 		return
 	}
 
 	err = service.VerifyCode(code)
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to verify OAuth code")
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 		return
 	}
 
-	user, err := controller.Broker.GetUser(req.Provider)
+	user, err := controller.broker.GetUser(req.Provider)
 
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to get user from OAuth provider")
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 		return
 	}
 
 	if user.Email == "" {
 		log.Error().Msg("OAuth provider did not return an email")
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 		return
 	}
 
-	if !controller.Auth.IsEmailWhitelisted(user.Email) {
+	if !controller.auth.IsEmailWhitelisted(user.Email) {
 		queries, err := query.Values(config.UnauthorizedQuery{
 			Username: user.Email,
 		})
 
 		if err != nil {
 			log.Error().Err(err).Msg("Failed to encode unauthorized query")
-			c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+			c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 			return
 		}
 
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", controller.Config.AppURL, queries.Encode()))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", controller.config.AppURL, queries.Encode()))
 		return
 	}
 
@@ -169,29 +169,35 @@ func (controller *OAuthController) oauthCallbackHandler(c *gin.Context) {
 		name = fmt.Sprintf("%s (%s)", utils.Capitalize(strings.Split(user.Email, "@")[0]), strings.Split(user.Email, "@")[1])
 	}
 
-	var usename string
+	var username string
 
 	if user.PreferredUsername != "" {
 		log.Debug().Msg("Using preferred username from OAuth provider")
-		usename = user.PreferredUsername
+		username = user.PreferredUsername
 	} else {
 		log.Debug().Msg("No preferred username from OAuth provider, using pseudo username")
-		usename = strings.Replace(user.Email, "@", "_", -1)
+		username = strings.Replace(user.Email, "@", "_", -1)
 	}
 
-	controller.Auth.CreateSessionCookie(c, &config.SessionCookie{
-		Username:    usename,
+	err = controller.auth.CreateSessionCookie(c, &config.SessionCookie{
+		Username:    username,
 		Name:        name,
 		Email:       user.Email,
 		Provider:    req.Provider,
 		OAuthGroups: utils.CoalesceToString(user.Groups),
 	})
 
-	redirectURI, err := c.Cookie(controller.Config.RedirectCookieName)
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to create session cookie")
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
+		return
+	}
 
-	if err != nil || !utils.IsRedirectSafe(redirectURI, controller.Config.RootDomain) {
+	redirectURI, err := c.Cookie(controller.config.RedirectCookieName)
+
+	if err != nil || !utils.IsRedirectSafe(redirectURI, controller.config.RootDomain) {
 		log.Debug().Msg("No redirect URI cookie found, redirecting to app root")
-		c.Redirect(http.StatusTemporaryRedirect, controller.Config.AppURL)
+		c.Redirect(http.StatusTemporaryRedirect, controller.config.AppURL)
 		return
 	}
 
@@ -201,10 +207,10 @@ func (controller *OAuthController) oauthCallbackHandler(c *gin.Context) {
 
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to encode redirect URI query")
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 		return
 	}
 
-	c.SetCookie(controller.Config.RedirectCookieName, "", -1, "/", fmt.Sprintf(".%s", controller.Config.RootDomain), controller.Config.SecureCookie, true)
-	c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/continue?%s", controller.Config.AppURL, queries.Encode()))
+	c.SetCookie(controller.config.RedirectCookieName, "", -1, "/", fmt.Sprintf(".%s", controller.config.RootDomain), controller.config.SecureCookie, true)
+	c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/continue?%s", controller.config.AppURL, queries.Encode()))
 }

internal/controller/proxy_controller.go

@@ -22,23 +22,23 @@ type ProxyControllerConfig struct {
 }
 
 type ProxyController struct {
-	Config ProxyControllerConfig
-	Router *gin.RouterGroup
-	Docker *service.DockerService
-	Auth   *service.AuthService
+	config ProxyControllerConfig
+	router *gin.RouterGroup
+	docker *service.DockerService
+	auth   *service.AuthService
 }
 
 func NewProxyController(config ProxyControllerConfig, router *gin.RouterGroup, docker *service.DockerService, auth *service.AuthService) *ProxyController {
 	return &ProxyController{
-		Config: config,
-		Router: router,
-		Docker: docker,
-		Auth:   auth,
+		config: config,
+		router: router,
+		docker: docker,
+		auth:   auth,
 	}
 }
 
 func (controller *ProxyController) SetupRoutes() {
-	proxyGroup := controller.Router.Group("/auth")
+	proxyGroup := controller.router.Group("/auth")
 	proxyGroup.GET("/:proxy", controller.proxyHandler)
 }
 
@@ -67,44 +67,18 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 	proto := c.Request.Header.Get("X-Forwarded-Proto")
 	host := c.Request.Header.Get("X-Forwarded-Host")
 
-	hostWithoutPort := strings.Split(host, ":")[0]
-	id := strings.Split(hostWithoutPort, ".")[0]
-
-	labels, err := controller.Docker.GetLabels(id, hostWithoutPort)
+	labels, err := controller.docker.GetLabels(host)
 
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to get labels from Docker")
-
-		if req.Proxy == "nginx" || !isBrowser {
-			c.JSON(500, gin.H{
-				"status":  500,
-				"message": "Internal Server Error",
-			})
-			return
-		}
-
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		controller.handleError(c, req, isBrowser)
 		return
 	}
 
 	clientIP := c.ClientIP()
 
-	if controller.Auth.IsBypassedIP(labels.IP, clientIP) {
-		c.Header("Authorization", c.Request.Header.Get("Authorization"))
-
-		headers := utils.ParseHeaders(labels.Response.Headers)
-
-		for key, value := range headers {
-			log.Debug().Str("header", key).Msg("Setting header")
-			c.Header(key, value)
-		}
-
-		basicPassword := utils.GetSecret(labels.Response.BasicAuth.Password, labels.Response.BasicAuth.PasswordFile)
-		if labels.Response.BasicAuth.Username != "" && basicPassword != "" {
-			log.Debug().Str("username", labels.Response.BasicAuth.Username).Msg("Setting basic auth header")
-			c.Header("Authorization", fmt.Sprintf("Basic %s", utils.GetBasicAuth(labels.Response.BasicAuth.Username, basicPassword)))
-		}
-
+	if controller.auth.IsBypassedIP(labels.IP, clientIP) {
+		controller.setHeaders(c, labels)
 		c.JSON(200, gin.H{
 			"status":  200,
 			"message": "Authenticated",
@@ -112,41 +86,17 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 		return
 	}
 
-	authEnabled, err := controller.Auth.IsAuthEnabled(uri, labels.Path)
+	authEnabled, err := controller.auth.IsAuthEnabled(uri, labels.Path)
 
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to check if auth is enabled for resource")
-
-		if req.Proxy == "nginx" || !isBrowser {
-			c.JSON(500, gin.H{
-				"status":  500,
-				"message": "Internal Server Error",
-			})
-			return
-		}
-
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		controller.handleError(c, req, isBrowser)
 		return
 	}
 
 	if !authEnabled {
 		log.Debug().Msg("Authentication disabled for resource, allowing access")
-
-		c.Header("Authorization", c.Request.Header.Get("Authorization"))
-
-		headers := utils.ParseHeaders(labels.Response.Headers)
-
-		for key, value := range headers {
-			log.Debug().Str("header", key).Msg("Setting header")
-			c.Header(key, value)
-		}
-
-		basicPassword := utils.GetSecret(labels.Response.BasicAuth.Password, labels.Response.BasicAuth.PasswordFile)
-		if labels.Response.BasicAuth.Username != "" && basicPassword != "" {
-			log.Debug().Str("username", labels.Response.BasicAuth.Username).Msg("Setting basic auth header")
-			c.Header("Authorization", fmt.Sprintf("Basic %s", utils.GetBasicAuth(labels.Response.BasicAuth.Username, basicPassword)))
-		}
-
+		controller.setHeaders(c, labels)
 		c.JSON(200, gin.H{
 			"status":  200,
 			"message": "Authenticated",
@@ -154,7 +104,7 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 		return
 	}
 
-	if !controller.Auth.CheckIP(labels.IP, clientIP) {
+	if !controller.auth.CheckIP(labels.IP, clientIP) {
 		if req.Proxy == "nginx" || !isBrowser {
 			c.JSON(401, gin.H{
 				"status":  401,
@@ -170,11 +120,11 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 
 		if err != nil {
 			log.Error().Err(err).Msg("Failed to encode unauthorized query")
-			c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+			c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 			return
 		}
 
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", controller.Config.AppURL, queries.Encode()))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", controller.config.AppURL, queries.Encode()))
 		return
 	}
 
@@ -197,7 +147,7 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 	}
 
 	if userContext.IsLoggedIn {
-		appAllowed := controller.Auth.IsResourceAllowed(c, userContext, labels)
+		appAllowed := controller.auth.IsResourceAllowed(c, userContext, labels)
 
 		if !appAllowed {
 			log.Warn().Str("user", userContext.Username).Str("resource", strings.Split(host, ".")[0]).Msg("User not allowed to access resource")
@@ -214,24 +164,24 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 				Resource: strings.Split(host, ".")[0],
 			})
 
+			if err != nil {
+				log.Error().Err(err).Msg("Failed to encode unauthorized query")
+				c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
+				return
+			}
+
 			if userContext.OAuth {
 				queries.Set("username", userContext.Email)
 			} else {
 				queries.Set("username", userContext.Username)
 			}
 
-			if err != nil {
-				log.Error().Err(err).Msg("Failed to encode unauthorized query")
-				c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
-				return
-			}
-
-			c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", controller.Config.AppURL, queries.Encode()))
+			c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", controller.config.AppURL, queries.Encode()))
 			return
 		}
 
 		if userContext.OAuth {
-			groupOK := controller.Auth.IsInOAuthGroup(c, userContext, labels.OAuth.Groups)
+			groupOK := controller.auth.IsInOAuthGroup(c, userContext, labels.OAuth.Groups)
 
 			if !groupOK {
 				log.Warn().Str("user", userContext.Username).Str("resource", strings.Split(host, ".")[0]).Msg("User OAuth groups do not match resource requirements")
@@ -249,41 +199,29 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 					GroupErr: true,
 				})
 
+				if err != nil {
+					log.Error().Err(err).Msg("Failed to encode unauthorized query")
+					c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
+					return
+				}
+
 				if userContext.OAuth {
 					queries.Set("username", userContext.Email)
 				} else {
 					queries.Set("username", userContext.Username)
 				}
 
-				if err != nil {
-					log.Error().Err(err).Msg("Failed to encode unauthorized query")
-					c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
-					return
-				}
-
-				c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", controller.Config.AppURL, queries.Encode()))
+				c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", controller.config.AppURL, queries.Encode()))
 				return
 			}
 		}
 
-		c.Header("Authorization", c.Request.Header.Get("Authorization"))
 		c.Header("Remote-User", utils.SanitizeHeader(userContext.Username))
 		c.Header("Remote-Name", utils.SanitizeHeader(userContext.Name))
 		c.Header("Remote-Email", utils.SanitizeHeader(userContext.Email))
 		c.Header("Remote-Groups", utils.SanitizeHeader(userContext.OAuthGroups))
 
-		headers := utils.ParseHeaders(labels.Response.Headers)
-
-		for key, value := range headers {
-			log.Debug().Str("header", key).Msg("Setting header")
-			c.Header(key, value)
-		}
-
-		basicPassword := utils.GetSecret(labels.Response.BasicAuth.Password, labels.Response.BasicAuth.PasswordFile)
-		if labels.Response.BasicAuth.Username != "" && basicPassword != "" {
-			log.Debug().Str("username", labels.Response.BasicAuth.Username).Msg("Setting basic auth header")
-			c.Header("Authorization", fmt.Sprintf("Basic %s", utils.GetBasicAuth(labels.Response.BasicAuth.Username, basicPassword)))
-		}
+		controller.setHeaders(c, labels)
 
 		c.JSON(200, gin.H{
 			"status":  200,
@@ -306,9 +244,39 @@ func (controller *ProxyController) proxyHandler(c *gin.Context) {
 
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to encode redirect URI query")
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.Config.AppURL))
+		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 		return
 	}
 
-	c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/login?%s", controller.Config.AppURL, queries.Encode()))
+	c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/login?%s", controller.config.AppURL, queries.Encode()))
+}
+
+func (controller *ProxyController) setHeaders(c *gin.Context, labels config.AppLabels) {
+	c.Header("Authorization", c.Request.Header.Get("Authorization"))
+
+	headers := utils.ParseHeaders(labels.Response.Headers)
+
+	for key, value := range headers {
+		log.Debug().Str("header", key).Msg("Setting header")
+		c.Header(key, value)
+	}
+
+	basicPassword := utils.GetSecret(labels.Response.BasicAuth.Password, labels.Response.BasicAuth.PasswordFile)
+
+	if labels.Response.BasicAuth.Username != "" && basicPassword != "" {
+		log.Debug().Str("username", labels.Response.BasicAuth.Username).Msg("Setting basic auth header")
+		c.Header("Authorization", fmt.Sprintf("Basic %s", utils.GetBasicAuth(labels.Response.BasicAuth.Username, basicPassword)))
+	}
+}
+
+func (controller *ProxyController) handleError(c *gin.Context, req Proxy, isBrowser bool) {
+	if req.Proxy == "nginx" || !isBrowser {
+		c.JSON(500, gin.H{
+			"status":  500,
+			"message": "Internal Server Error",
+		})
+		return
+	}
+
+	c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/error", controller.config.AppURL))
 }

internal/controller/resources_controller.go

@@ -11,32 +11,32 @@ type ResourcesControllerConfig struct {
 }
 
 type ResourcesController struct {
-	Config     ResourcesControllerConfig
-	Router     *gin.RouterGroup
-	FileServer http.Handler
+	config     ResourcesControllerConfig
+	router     *gin.RouterGroup
+	fileServer http.Handler
 }
 
 func NewResourcesController(config ResourcesControllerConfig, router *gin.RouterGroup) *ResourcesController {
 	fileServer := http.StripPrefix("/resources", http.FileServer(http.Dir(config.ResourcesDir)))
 
 	return &ResourcesController{
-		Config:     config,
-		Router:     router,
-		FileServer: fileServer,
+		config:     config,
+		router:     router,
+		fileServer: fileServer,
 	}
 }
 
 func (controller *ResourcesController) SetupRoutes() {
-	controller.Router.GET("/resources/*resource", controller.resourcesHandler)
+	controller.router.GET("/resources/*resource", controller.resourcesHandler)
 }
 
 func (controller *ResourcesController) resourcesHandler(c *gin.Context) {
-	if controller.Config.ResourcesDir == "" {
+	if controller.config.ResourcesDir == "" {
 		c.JSON(404, gin.H{
 			"status":  404,
 			"message": "Resources not found",
 		})
 		return
 	}
-	controller.FileServer.ServeHTTP(c.Writer, c.Request)
+	controller.fileServer.ServeHTTP(c.Writer, c.Request)
 }

internal/controller/user_controller.go

@@ -26,21 +26,21 @@ type UserControllerConfig struct {
 }
 
 type UserController struct {
-	Config UserControllerConfig
-	Router *gin.RouterGroup
-	Auth   *service.AuthService
+	config UserControllerConfig
+	router *gin.RouterGroup
+	auth   *service.AuthService
 }
 
 func NewUserController(config UserControllerConfig, router *gin.RouterGroup, auth *service.AuthService) *UserController {
 	return &UserController{
-		Config: config,
-		Router: router,
-		Auth:   auth,
+		config: config,
+		router: router,
+		auth:   auth,
 	}
 }
 
 func (controller *UserController) SetupRoutes() {
-	userGroup := controller.Router.Group("/user")
+	userGroup := controller.router.Group("/user")
 	userGroup.POST("/login", controller.loginHandler)
 	userGroup.POST("/logout", controller.logoutHandler)
 	userGroup.POST("/totp", controller.totpHandler)
@@ -69,7 +69,7 @@ func (controller *UserController) loginHandler(c *gin.Context) {
 
 	log.Debug().Str("username", req.Username).Str("ip", clientIP).Msg("Login attempt")
 
-	isLocked, remainingTime := controller.Auth.IsAccountLocked(rateIdentifier)
+	isLocked, remainingTime := controller.auth.IsAccountLocked(rateIdentifier)
 
 	if isLocked {
 		log.Warn().Str("username", req.Username).Str("ip", clientIP).Msg("Account is locked due to too many failed login attempts")
@@ -80,11 +80,11 @@ func (controller *UserController) loginHandler(c *gin.Context) {
 		return
 	}
 
-	userSearch := controller.Auth.SearchUser(req.Username)
+	userSearch := controller.auth.SearchUser(req.Username)
 
-	if userSearch.Type == "" {
+	if userSearch.Type == "unknown" {
 		log.Warn().Str("username", req.Username).Str("ip", clientIP).Msg("User not found")
-		controller.Auth.RecordLoginAttempt(rateIdentifier, false)
+		controller.auth.RecordLoginAttempt(rateIdentifier, false)
 		c.JSON(401, gin.H{
 			"status":  401,
 			"message": "Unauthorized",
@@ -92,9 +92,9 @@ func (controller *UserController) loginHandler(c *gin.Context) {
 		return
 	}
 
-	if !controller.Auth.VerifyUser(userSearch, req.Password) {
+	if !controller.auth.VerifyUser(userSearch, req.Password) {
 		log.Warn().Str("username", req.Username).Str("ip", clientIP).Msg("Invalid password")
-		controller.Auth.RecordLoginAttempt(rateIdentifier, false)
+		controller.auth.RecordLoginAttempt(rateIdentifier, false)
 		c.JSON(401, gin.H{
 			"status":  401,
 			"message": "Unauthorized",
@@ -104,18 +104,18 @@ func (controller *UserController) loginHandler(c *gin.Context) {
 
 	log.Info().Str("username", req.Username).Str("ip", clientIP).Msg("Login successful")
 
-	controller.Auth.RecordLoginAttempt(rateIdentifier, true)
+	controller.auth.RecordLoginAttempt(rateIdentifier, true)
 
 	if userSearch.Type == "local" {
-		user := controller.Auth.GetLocalUser(userSearch.Username)
+		user := controller.auth.GetLocalUser(userSearch.Username)
 
 		if user.TotpSecret != "" {
 			log.Debug().Str("username", req.Username).Msg("User has TOTP enabled, requiring TOTP verification")
 
-			err := controller.Auth.CreateSessionCookie(c, &config.SessionCookie{
+			err := controller.auth.CreateSessionCookie(c, &config.SessionCookie{
 				Username:    user.Username,
 				Name:        utils.Capitalize(req.Username),
-				Email:       fmt.Sprintf("%s@%s", strings.ToLower(req.Username), controller.Config.RootDomain),
+				Email:       fmt.Sprintf("%s@%s", strings.ToLower(req.Username), controller.config.RootDomain),
 				Provider:    "username",
 				TotpPending: true,
 			})
@@ -138,10 +138,10 @@ func (controller *UserController) loginHandler(c *gin.Context) {
 		}
 	}
 
-	err = controller.Auth.CreateSessionCookie(c, &config.SessionCookie{
+	err = controller.auth.CreateSessionCookie(c, &config.SessionCookie{
 		Username: req.Username,
 		Name:     utils.Capitalize(req.Username),
-		Email:    fmt.Sprintf("%s@%s", strings.ToLower(req.Username), controller.Config.RootDomain),
+		Email:    fmt.Sprintf("%s@%s", strings.ToLower(req.Username), controller.config.RootDomain),
 		Provider: "username",
 	})
 
@@ -163,7 +163,7 @@ func (controller *UserController) loginHandler(c *gin.Context) {
 func (controller *UserController) logoutHandler(c *gin.Context) {
 	log.Debug().Msg("Logout request received")
 
-	controller.Auth.DeleteSessionCookie(c)
+	controller.auth.DeleteSessionCookie(c)
 
 	c.JSON(200, gin.H{
 		"status":  200,
@@ -214,24 +214,24 @@ func (controller *UserController) totpHandler(c *gin.Context) {
 
 	log.Debug().Str("username", context.Username).Str("ip", clientIP).Msg("TOTP verification attempt")
 
-	isLocked, remainingTime := controller.Auth.IsAccountLocked(rateIdentifier)
+	isLocked, remainingTime := controller.auth.IsAccountLocked(rateIdentifier)
 
 	if isLocked {
 		log.Warn().Str("username", context.Username).Str("ip", clientIP).Msg("Account is locked due to too many failed TOTP attempts")
 		c.JSON(429, gin.H{
 			"status":  429,
-			"message": fmt.Sprintf("Too many failed login attempts. Try again in %d seconds", remainingTime),
+			"message": fmt.Sprintf("Too many failed TOTP attempts. Try again in %d seconds", remainingTime),
 		})
 		return
 	}
 
-	user := controller.Auth.GetLocalUser(context.Username)
+	user := controller.auth.GetLocalUser(context.Username)
 
 	ok := totp.Validate(req.Code, user.TotpSecret)
 
 	if !ok {
 		log.Warn().Str("username", context.Username).Str("ip", clientIP).Msg("Invalid TOTP code")
-		controller.Auth.RecordLoginAttempt(rateIdentifier, false)
+		controller.auth.RecordLoginAttempt(rateIdentifier, false)
 		c.JSON(401, gin.H{
 			"status":  401,
 			"message": "Unauthorized",
@@ -241,12 +241,12 @@ func (controller *UserController) totpHandler(c *gin.Context) {
 
 	log.Info().Str("username", context.Username).Str("ip", clientIP).Msg("TOTP verification successful")
 
-	controller.Auth.RecordLoginAttempt(rateIdentifier, true)
+	controller.auth.RecordLoginAttempt(rateIdentifier, true)
 
-	err = controller.Auth.CreateSessionCookie(c, &config.SessionCookie{
+	err = controller.auth.CreateSessionCookie(c, &config.SessionCookie{
 		Username: user.Username,
 		Name:     utils.Capitalize(user.Username),
-		Email:    fmt.Sprintf("%s@%s", strings.ToLower(user.Username), controller.Config.RootDomain),
+		Email:    fmt.Sprintf("%s@%s", strings.ToLower(user.Username), controller.config.RootDomain),
 		Provider: "username",
 	})
 

internal/middleware/context_middleware.go

@@ -16,16 +16,16 @@ type ContextMiddlewareConfig struct {
 }
 
 type ContextMiddleware struct {
-	Config ContextMiddlewareConfig
-	Auth   *service.AuthService
-	Broker *service.OAuthBrokerService
+	config ContextMiddlewareConfig
+	auth   *service.AuthService
+	broker *service.OAuthBrokerService
 }
 
 func NewContextMiddleware(config ContextMiddlewareConfig, auth *service.AuthService, broker *service.OAuthBrokerService) *ContextMiddleware {
 	return &ContextMiddleware{
-		Config: config,
-		Auth:   auth,
-		Broker: broker,
+		config: config,
+		auth:   auth,
+		broker: broker,
 	}
 }
 
@@ -35,7 +35,7 @@ func (m *ContextMiddleware) Init() error {
 
 func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 	return func(c *gin.Context) {
-		cookie, err := m.Auth.GetSessionCookie(c)
+		cookie, err := m.auth.GetSessionCookie(c)
 
 		if err != nil {
 			log.Debug().Err(err).Msg("No valid session cookie found")
@@ -57,11 +57,11 @@ func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 
 		switch cookie.Provider {
 		case "username":
-			userSearch := m.Auth.SearchUser(cookie.Username)
+			userSearch := m.auth.SearchUser(cookie.Username)
 
-			if userSearch.Type == "unknown" {
+			if userSearch.Type == "unknown" || userSearch.Type == "error" {
 				log.Debug().Msg("User from session cookie not found")
-				m.Auth.DeleteSessionCookie(c)
+				m.auth.DeleteSessionCookie(c)
 				goto basic
 			}
 
@@ -75,17 +75,17 @@ func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 			c.Next()
 			return
 		default:
-			_, exists := m.Broker.GetService(cookie.Provider)
+			_, exists := m.broker.GetService(cookie.Provider)
 
 			if !exists {
 				log.Debug().Msg("OAuth provider from session cookie not found")
-				m.Auth.DeleteSessionCookie(c)
+				m.auth.DeleteSessionCookie(c)
 				goto basic
 			}
 
-			if !m.Auth.IsEmailWhitelisted(cookie.Email) {
+			if !m.auth.IsEmailWhitelisted(cookie.Email) {
 				log.Debug().Msg("Email from session cookie not whitelisted")
-				m.Auth.DeleteSessionCookie(c)
+				m.auth.DeleteSessionCookie(c)
 				goto basic
 			}
 
@@ -103,7 +103,7 @@ func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 		}
 
 	basic:
-		basic := m.Auth.GetBasicAuth(c)
+		basic := m.auth.GetBasicAuth(c)
 
 		if basic == nil {
 			log.Debug().Msg("No basic auth provided")
@@ -111,15 +111,15 @@ func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 			return
 		}
 
-		userSearch := m.Auth.SearchUser(basic.Username)
+		userSearch := m.auth.SearchUser(basic.Username)
 
-		if userSearch.Type == "unknown" {
+		if userSearch.Type == "unknown" || userSearch.Type == "error" {
 			log.Debug().Msg("User from basic auth not found")
 			c.Next()
 			return
 		}
 
-		if !m.Auth.VerifyUser(userSearch, basic.Password) {
+		if !m.auth.VerifyUser(userSearch, basic.Password) {
 			log.Debug().Msg("Invalid password for basic auth user")
 			c.Next()
 			return
@@ -129,12 +129,12 @@ func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 		case "local":
 			log.Debug().Msg("Basic auth user is local")
 
-			user := m.Auth.GetLocalUser(basic.Username)
+			user := m.auth.GetLocalUser(basic.Username)
 
 			c.Set("context", &config.UserContext{
 				Username:    user.Username,
 				Name:        utils.Capitalize(user.Username),
-				Email:       fmt.Sprintf("%s@%s", strings.ToLower(user.Username), m.Config.RootDomain),
+				Email:       fmt.Sprintf("%s@%s", strings.ToLower(user.Username), m.config.RootDomain),
 				Provider:    "basic",
 				IsLoggedIn:  true,
 				TotpEnabled: user.TotpSecret != "",
@@ -146,7 +146,7 @@ func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 			c.Set("context", &config.UserContext{
 				Username:   basic.Username,
 				Name:       utils.Capitalize(basic.Username),
-				Email:      fmt.Sprintf("%s@%s", strings.ToLower(basic.Username), m.Config.RootDomain),
+				Email:      fmt.Sprintf("%s@%s", strings.ToLower(basic.Username), m.config.RootDomain),
 				Provider:   "basic",
 				IsLoggedIn: true,
 			})

internal/middleware/ui_middleware.go

@@ -11,8 +11,8 @@ import (
 )
 
 type UIMiddleware struct {
-	UIFS         fs.FS
-	UIFileServer http.Handler
+	uiFs         fs.FS
+	uiFileServer http.Handler
 }
 
 func NewUIMiddleware() *UIMiddleware {
@@ -26,8 +26,8 @@ func (m *UIMiddleware) Init() error {
 		return err
 	}
 
-	m.UIFS = ui
-	m.UIFileServer = http.FileServer(http.FS(ui))
+	m.uiFs = ui
+	m.uiFileServer = http.FileServer(http.FS(ui))
 
 	return nil
 }
@@ -42,13 +42,13 @@ func (m *UIMiddleware) Middleware() gin.HandlerFunc {
 			c.Next()
 			return
 		default:
-			_, err := fs.Stat(m.UIFS, strings.TrimPrefix(c.Request.URL.Path, "/"))
+			_, err := fs.Stat(m.uiFs, strings.TrimPrefix(c.Request.URL.Path, "/"))
 
 			if os.IsNotExist(err) {
 				c.Request.URL.Path = "/"
 			}
 
-			m.UIFileServer.ServeHTTP(c.Writer, c.Request)
+			m.uiFileServer.ServeHTTP(c.Writer, c.Request)
 			c.Abort()
 			return
 		}

internal/service/auth_service.go

@@ -35,21 +35,21 @@ type AuthServiceConfig struct {
 }
 
 type AuthService struct {
-	Config        AuthServiceConfig
-	Docker        *DockerService
-	LoginAttempts map[string]*LoginAttempt
-	LoginMutex    sync.RWMutex
-	LDAP          *LdapService
-	Database      *gorm.DB
+	config        AuthServiceConfig
+	docker        *DockerService
+	loginAttempts map[string]*LoginAttempt
+	loginMutex    sync.RWMutex
+	ldap          *LdapService
+	database      *gorm.DB
 }
 
 func NewAuthService(config AuthServiceConfig, docker *DockerService, ldap *LdapService, database *gorm.DB) *AuthService {
 	return &AuthService{
-		Config:        config,
-		Docker:        docker,
-		LoginAttempts: make(map[string]*LoginAttempt),
-		LDAP:          ldap,
-		Database:      database,
+		config:        config,
+		docker:        docker,
+		loginAttempts: make(map[string]*LoginAttempt),
+		ldap:          ldap,
+		database:      database,
 	}
 }
 
@@ -65,12 +65,14 @@ func (auth *AuthService) SearchUser(username string) config.UserSearch {
 		}
 	}
 
-	if auth.LDAP != nil {
-		userDN, err := auth.LDAP.Search(username)
+	if auth.ldap != nil {
+		userDN, err := auth.ldap.Search(username)
 
 		if err != nil {
 			log.Warn().Err(err).Str("username", username).Msg("Failed to search for user in LDAP")
-			return config.UserSearch{}
+			return config.UserSearch{
+				Type: "error",
+			}
 		}
 
 		return config.UserSearch{
@@ -90,14 +92,14 @@ func (auth *AuthService) VerifyUser(search config.UserSearch, password string) b
 		user := auth.GetLocalUser(search.Username)
 		return auth.CheckPassword(user, password)
 	case "ldap":
-		if auth.LDAP != nil {
-			err := auth.LDAP.Bind(search.Username, password)
+		if auth.ldap != nil {
+			err := auth.ldap.Bind(search.Username, password)
 			if err != nil {
 				log.Warn().Err(err).Str("username", search.Username).Msg("Failed to bind to LDAP")
 				return false
 			}
 
-			err = auth.LDAP.Bind(auth.LDAP.Config.BindDN, auth.LDAP.Config.BindPassword)
+			err = auth.ldap.Bind(auth.ldap.Config.BindDN, auth.ldap.Config.BindPassword)
 			if err != nil {
 				log.Error().Err(err).Msg("Failed to rebind with service account after user authentication")
 				return false
@@ -115,7 +117,7 @@ func (auth *AuthService) VerifyUser(search config.UserSearch, password string) b
 }
 
 func (auth *AuthService) GetLocalUser(username string) config.User {
-	for _, user := range auth.Config.Users {
+	for _, user := range auth.config.Users {
 		if user.Username == username {
 			return user
 		}
@@ -130,14 +132,14 @@ func (auth *AuthService) CheckPassword(user config.User, password string) bool {
 }
 
 func (auth *AuthService) IsAccountLocked(identifier string) (bool, int) {
-	auth.LoginMutex.RLock()
-	defer auth.LoginMutex.RUnlock()
+	auth.loginMutex.RLock()
+	defer auth.loginMutex.RUnlock()
 
-	if auth.Config.LoginMaxRetries <= 0 || auth.Config.LoginTimeout <= 0 {
+	if auth.config.LoginMaxRetries <= 0 || auth.config.LoginTimeout <= 0 {
 		return false, 0
 	}
 
-	attempt, exists := auth.LoginAttempts[identifier]
+	attempt, exists := auth.loginAttempts[identifier]
 	if !exists {
 		return false, 0
 	}
@@ -151,17 +153,17 @@ func (auth *AuthService) IsAccountLocked(identifier string) (bool, int) {
 }
 
 func (auth *AuthService) RecordLoginAttempt(identifier string, success bool) {
-	if auth.Config.LoginMaxRetries <= 0 || auth.Config.LoginTimeout <= 0 {
+	if auth.config.LoginMaxRetries <= 0 || auth.config.LoginTimeout <= 0 {
 		return
 	}
 
-	auth.LoginMutex.Lock()
-	defer auth.LoginMutex.Unlock()
+	auth.loginMutex.Lock()
+	defer auth.loginMutex.Unlock()
 
-	attempt, exists := auth.LoginAttempts[identifier]
+	attempt, exists := auth.loginAttempts[identifier]
 	if !exists {
 		attempt = &LoginAttempt{}
-		auth.LoginAttempts[identifier] = attempt
+		auth.loginAttempts[identifier] = attempt
 	}
 
 	attempt.LastAttempt = time.Now()
@@ -174,14 +176,14 @@ func (auth *AuthService) RecordLoginAttempt(identifier string, success bool) {
 
 	attempt.FailedAttempts++
 
-	if attempt.FailedAttempts >= auth.Config.LoginMaxRetries {
-		attempt.LockedUntil = time.Now().Add(time.Duration(auth.Config.LoginTimeout) * time.Second)
-		log.Warn().Str("identifier", identifier).Int("timeout", auth.Config.LoginTimeout).Msg("Account locked due to too many failed login attempts")
+	if attempt.FailedAttempts >= auth.config.LoginMaxRetries {
+		attempt.LockedUntil = time.Now().Add(time.Duration(auth.config.LoginTimeout) * time.Second)
+		log.Warn().Str("identifier", identifier).Int("timeout", auth.config.LoginTimeout).Msg("Account locked due to too many failed login attempts")
 	}
 }
 
 func (auth *AuthService) IsEmailWhitelisted(email string) bool {
-	return utils.CheckFilter(auth.Config.OauthWhitelist, email)
+	return utils.CheckFilter(auth.config.OauthWhitelist, email)
 }
 
 func (auth *AuthService) CreateSessionCookie(c *gin.Context, data *config.SessionCookie) error {
@@ -196,7 +198,7 @@ func (auth *AuthService) CreateSessionCookie(c *gin.Context, data *config.Sessio
 	if data.TotpPending {
 		expiry = 3600
 	} else {
-		expiry = auth.Config.SessionExpiry
+		expiry = auth.config.SessionExpiry
 	}
 
 	session := model.Session{
@@ -210,37 +212,37 @@ func (auth *AuthService) CreateSessionCookie(c *gin.Context, data *config.Sessio
 		Expiry:      time.Now().Add(time.Duration(expiry) * time.Second).Unix(),
 	}
 
-	err = auth.Database.Create(&session).Error
+	err = auth.database.Create(&session).Error
 
 	if err != nil {
 		return err
 	}
 
-	c.SetCookie(auth.Config.SessionCookieName, session.UUID, expiry, "/", fmt.Sprintf(".%s", auth.Config.RootDomain), auth.Config.SecureCookie, true)
+	c.SetCookie(auth.config.SessionCookieName, session.UUID, expiry, "/", fmt.Sprintf(".%s", auth.config.RootDomain), auth.config.SecureCookie, true)
 
 	return nil
 }
 
 func (auth *AuthService) DeleteSessionCookie(c *gin.Context) error {
-	cookie, err := c.Cookie(auth.Config.SessionCookieName)
+	cookie, err := c.Cookie(auth.config.SessionCookieName)
 
 	if err != nil {
 		return err
 	}
 
-	res := auth.Database.Unscoped().Where("uuid = ?", cookie).Delete(&model.Session{})
+	res := auth.database.Unscoped().Where("uuid = ?", cookie).Delete(&model.Session{})
 
 	if res.Error != nil {
 		return res.Error
 	}
 
-	c.SetCookie(auth.Config.SessionCookieName, "", -1, "/", fmt.Sprintf(".%s", auth.Config.RootDomain), auth.Config.SecureCookie, true)
+	c.SetCookie(auth.config.SessionCookieName, "", -1, "/", fmt.Sprintf(".%s", auth.config.RootDomain), auth.config.SecureCookie, true)
 
 	return nil
 }
 
 func (auth *AuthService) GetSessionCookie(c *gin.Context) (config.SessionCookie, error) {
-	cookie, err := c.Cookie(auth.Config.SessionCookieName)
+	cookie, err := c.Cookie(auth.config.SessionCookieName)
 
 	if err != nil {
 		return config.SessionCookie{}, err
@@ -248,7 +250,7 @@ func (auth *AuthService) GetSessionCookie(c *gin.Context) (config.SessionCookie,
 
 	var session model.Session
 
-	res := auth.Database.Unscoped().Where("uuid = ?", cookie).First(&session)
+	res := auth.database.Unscoped().Where("uuid = ?", cookie).First(&session)
 
 	if res.Error != nil {
 		return config.SessionCookie{}, res.Error
@@ -261,7 +263,7 @@ func (auth *AuthService) GetSessionCookie(c *gin.Context) (config.SessionCookie,
 	currentTime := time.Now().Unix()
 
 	if currentTime > session.Expiry {
-		res := auth.Database.Unscoped().Where("uuid = ?", session.UUID).Delete(&model.Session{})
+		res := auth.database.Unscoped().Where("uuid = ?", session.UUID).Delete(&model.Session{})
 		if res.Error != nil {
 			log.Error().Err(res.Error).Msg("Failed to delete expired session")
 		}
@@ -280,7 +282,7 @@ func (auth *AuthService) GetSessionCookie(c *gin.Context) (config.SessionCookie,
 }
 
 func (auth *AuthService) UserAuthConfigured() bool {
-	return len(auth.Config.Users) > 0 || auth.LDAP != nil
+	return len(auth.config.Users) > 0 || auth.ldap != nil
 }
 
 func (auth *AuthService) IsResourceAllowed(c *gin.Context, context config.UserContext, labels config.AppLabels) bool {

internal/service/database_service.go

@@ -16,18 +16,18 @@ type DatabaseServiceConfig struct {
 }
 
 type DatabaseService struct {
-	Config   DatabaseServiceConfig
-	Database *gorm.DB
+	config   DatabaseServiceConfig
+	database *gorm.DB
 }
 
 func NewDatabaseService(config DatabaseServiceConfig) *DatabaseService {
 	return &DatabaseService{
-		Config: config,
+		config: config,
 	}
 }
 
 func (ds *DatabaseService) Init() error {
-	gormDB, err := gorm.Open(sqlite.Open(ds.Config.DatabasePath), &gorm.Config{})
+	gormDB, err := gorm.Open(sqlite.Open(ds.config.DatabasePath), &gorm.Config{})
 
 	if err != nil {
 		return err
@@ -47,7 +47,7 @@ func (ds *DatabaseService) Init() error {
 		return err
 	}
 
-	ds.Database = gormDB
+	ds.database = gormDB
 	return nil
 }
 
@@ -74,5 +74,5 @@ func (ds *DatabaseService) migrateDatabase(sqlDB *sql.DB) error {
 }
 
 func (ds *DatabaseService) GetDatabase() *gorm.DB {
-	return ds.Database
+	return ds.database
 }

internal/service/docker_service.go

@@ -12,8 +12,8 @@ import (
 )
 
 type DockerService struct {
-	Client  *client.Client
-	Context context.Context
+	client  *client.Client
+	context context.Context
 }
 
 func NewDockerService() *DockerService {
@@ -29,13 +29,13 @@ func (docker *DockerService) Init() error {
 	ctx := context.Background()
 	client.NegotiateAPIVersion(ctx)
 
-	docker.Client = client
-	docker.Context = ctx
+	docker.client = client
+	docker.context = ctx
 	return nil
 }
 
 func (docker *DockerService) GetContainers() ([]container.Summary, error) {
-	containers, err := docker.Client.ContainerList(docker.Context, container.ListOptions{})
+	containers, err := docker.client.ContainerList(docker.context, container.ListOptions{})
 	if err != nil {
 		return nil, err
 	}
@@ -43,7 +43,7 @@ func (docker *DockerService) GetContainers() ([]container.Summary, error) {
 }
 
 func (docker *DockerService) InspectContainer(containerId string) (container.InspectResponse, error) {
-	inspect, err := docker.Client.ContainerInspect(docker.Context, containerId)
+	inspect, err := docker.client.ContainerInspect(docker.context, containerId)
 	if err != nil {
 		return container.InspectResponse{}, err
 	}
@@ -51,11 +51,11 @@ func (docker *DockerService) InspectContainer(containerId string) (container.Ins
 }
 
 func (docker *DockerService) DockerConnected() bool {
-	_, err := docker.Client.Ping(docker.Context)
+	_, err := docker.client.Ping(docker.context)
 	return err == nil
 }
 
-func (docker *DockerService) GetLabels(app string, domain string) (config.AppLabels, error) {
+func (docker *DockerService) GetLabels(appDomain string) (config.AppLabels, error) {
 	isConnected := docker.DockerConnected()
 
 	if !isConnected {
@@ -68,21 +68,21 @@ func (docker *DockerService) GetLabels(app string, domain string) (config.AppLab
 		return config.AppLabels{}, err
 	}
 
-	for _, container := range containers {
-		inspect, err := docker.InspectContainer(container.ID)
+	for _, ctr := range containers {
+		inspect, err := docker.InspectContainer(ctr.ID)
 		if err != nil {
-			log.Warn().Str("id", container.ID).Err(err).Msg("Error inspecting container, skipping")
+			log.Warn().Str("id", ctr.ID).Err(err).Msg("Error inspecting container, skipping")
 			continue
 		}
 
 		labels, err := utils.GetLabels(inspect.Config.Labels)
 		if err != nil {
-			log.Warn().Str("id", container.ID).Err(err).Msg("Error getting container labels, skipping")
+			log.Warn().Str("id", ctr.ID).Err(err).Msg("Error getting container labels, skipping")
 			continue
 		}
 
 		for appName, appLabels := range labels.Apps {
-			if appLabels.Config.Domain == domain {
+			if appLabels.Config.Domain == appDomain {
 				log.Debug().Str("id", inspect.ID).Msg("Found matching container by domain")
 				return appLabels, nil
 			}

internal/service/generic_oauth_service.go

@@ -16,17 +16,17 @@ import (
 )
 
 type GenericOAuthService struct {
-	Config             oauth2.Config
-	Context            context.Context
-	Token              *oauth2.Token
-	Verifier           string
-	InsecureSkipVerify bool
-	UserinfoURL        string
+	config             oauth2.Config
+	context            context.Context
+	token              *oauth2.Token
+	verifier           string
+	insecureSkipVerify bool
+	userinfoUrl        string
 }
 
 func NewGenericOAuthService(config config.OAuthServiceConfig) *GenericOAuthService {
 	return &GenericOAuthService{
-		Config: oauth2.Config{
+		config: oauth2.Config{
 			ClientID:     config.ClientID,
 			ClientSecret: config.ClientSecret,
 			RedirectURL:  config.RedirectURL,
@@ -36,15 +36,15 @@ func NewGenericOAuthService(config config.OAuthServiceConfig) *GenericOAuthServi
 				TokenURL: config.TokenURL,
 			},
 		},
-		InsecureSkipVerify: config.InsecureSkipVerify,
-		UserinfoURL:        config.UserinfoURL,
+		insecureSkipVerify: config.InsecureSkipVerify,
+		userinfoUrl:        config.UserinfoURL,
 	}
 }
 
 func (generic *GenericOAuthService) Init() error {
 	transport := &http.Transport{
 		TLSClientConfig: &tls.Config{
-			InsecureSkipVerify: generic.InsecureSkipVerify,
+			InsecureSkipVerify: generic.insecureSkipVerify,
 			MinVersion:         tls.VersionTLS12,
 		},
 	}
@@ -58,8 +58,8 @@ func (generic *GenericOAuthService) Init() error {
 	ctx = context.WithValue(ctx, oauth2.HTTPClient, httpClient)
 	verifier := oauth2.GenerateVerifier()
 
-	generic.Context = ctx
-	generic.Verifier = verifier
+	generic.context = ctx
+	generic.verifier = verifier
 	return nil
 }
 
@@ -74,26 +74,26 @@ func (generic *GenericOAuthService) GenerateState() string {
 }
 
 func (generic *GenericOAuthService) GetAuthURL(state string) string {
-	return generic.Config.AuthCodeURL(state, oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(generic.Verifier))
+	return generic.config.AuthCodeURL(state, oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(generic.verifier))
 }
 
 func (generic *GenericOAuthService) VerifyCode(code string) error {
-	token, err := generic.Config.Exchange(generic.Context, code, oauth2.VerifierOption(generic.Verifier))
+	token, err := generic.config.Exchange(generic.context, code, oauth2.VerifierOption(generic.verifier))
 
 	if err != nil {
 		return err
 	}
 
-	generic.Token = token
+	generic.token = token
 	return nil
 }
 
 func (generic *GenericOAuthService) Userinfo() (config.Claims, error) {
 	var user config.Claims
 
-	client := generic.Config.Client(generic.Context, generic.Token)
+	client := generic.config.Client(generic.context, generic.token)
 
-	res, err := client.Get(generic.UserinfoURL)
+	res, err := client.Get(generic.userinfoUrl)
 	if err != nil {
 		return user, err
 	}

internal/service/github_oauth_service.go

@@ -29,15 +29,15 @@ type GithubUserInfoResponse struct {
 }
 
 type GithubOAuthService struct {
-	Config   oauth2.Config
-	Context  context.Context
-	Token    *oauth2.Token
-	Verifier string
+	config   oauth2.Config
+	context  context.Context
+	token    *oauth2.Token
+	verifier string
 }
 
 func NewGithubOAuthService(config config.OAuthServiceConfig) *GithubOAuthService {
 	return &GithubOAuthService{
-		Config: oauth2.Config{
+		config: oauth2.Config{
 			ClientID:     config.ClientID,
 			ClientSecret: config.ClientSecret,
 			RedirectURL:  config.RedirectURL,
@@ -53,8 +53,8 @@ func (github *GithubOAuthService) Init() error {
 	ctx = context.WithValue(ctx, oauth2.HTTPClient, httpClient)
 	verifier := oauth2.GenerateVerifier()
 
-	github.Context = ctx
-	github.Verifier = verifier
+	github.context = ctx
+	github.verifier = verifier
 	return nil
 }
 
@@ -69,24 +69,24 @@ func (github *GithubOAuthService) GenerateState() string {
 }
 
 func (github *GithubOAuthService) GetAuthURL(state string) string {
-	return github.Config.AuthCodeURL(state, oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(github.Verifier))
+	return github.config.AuthCodeURL(state, oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(github.verifier))
 }
 
 func (github *GithubOAuthService) VerifyCode(code string) error {
-	token, err := github.Config.Exchange(github.Context, code, oauth2.VerifierOption(github.Verifier))
+	token, err := github.config.Exchange(github.context, code, oauth2.VerifierOption(github.verifier))
 
 	if err != nil {
 		return err
 	}
 
-	github.Token = token
+	github.token = token
 	return nil
 }
 
 func (github *GithubOAuthService) Userinfo() (config.Claims, error) {
 	var user config.Claims
 
-	client := github.Config.Client(github.Context, github.Token)
+	client := github.config.Client(github.context, github.token)
 
 	req, err := http.NewRequest("GET", "https://api.github.com/user", nil)
 	if err != nil {

internal/service/google_oauth_service.go

@@ -24,15 +24,15 @@ type GoogleUserInfoResponse struct {
 }
 
 type GoogleOAuthService struct {
-	Config   oauth2.Config
-	Context  context.Context
-	Token    *oauth2.Token
-	Verifier string
+	config   oauth2.Config
+	context  context.Context
+	token    *oauth2.Token
+	verifier string
 }
 
 func NewGoogleOAuthService(config config.OAuthServiceConfig) *GoogleOAuthService {
 	return &GoogleOAuthService{
-		Config: oauth2.Config{
+		config: oauth2.Config{
 			ClientID:     config.ClientID,
 			ClientSecret: config.ClientSecret,
 			RedirectURL:  config.RedirectURL,
@@ -48,8 +48,8 @@ func (google *GoogleOAuthService) Init() error {
 	ctx = context.WithValue(ctx, oauth2.HTTPClient, httpClient)
 	verifier := oauth2.GenerateVerifier()
 
-	google.Context = ctx
-	google.Verifier = verifier
+	google.context = ctx
+	google.verifier = verifier
 	return nil
 }
 
@@ -64,24 +64,24 @@ func (oauth *GoogleOAuthService) GenerateState() string {
 }
 
 func (google *GoogleOAuthService) GetAuthURL(state string) string {
-	return google.Config.AuthCodeURL(state, oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(google.Verifier))
+	return google.config.AuthCodeURL(state, oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(google.verifier))
 }
 
 func (google *GoogleOAuthService) VerifyCode(code string) error {
-	token, err := google.Config.Exchange(google.Context, code, oauth2.VerifierOption(google.Verifier))
+	token, err := google.config.Exchange(google.context, code, oauth2.VerifierOption(google.verifier))
 
 	if err != nil {
 		return err
 	}
 
-	google.Token = token
+	google.token = token
 	return nil
 }
 
 func (google *GoogleOAuthService) Userinfo() (config.Claims, error) {
 	var user config.Claims
 
-	client := google.Config.Client(google.Context, google.Token)
+	client := google.config.Client(google.context, google.token)
 
 	res, err := client.Get("https://www.googleapis.com/userinfo/v2/me")
 	if err != nil {

internal/service/ldap_service.go

@@ -22,9 +22,9 @@ type LdapServiceConfig struct {
 }
 
 type LdapService struct {
-	Config LdapServiceConfig
-	Conn   *ldapgo.Conn
-	Mutex  sync.RWMutex
+	Config LdapServiceConfig // exported so as the auth service can use it
+	conn   *ldapgo.Conn
+	mutex  sync.RWMutex
 }
 
 func NewLdapService(config LdapServiceConfig) *LdapService {
@@ -57,7 +57,8 @@ func (ldap *LdapService) Init() error {
 }
 
 func (ldap *LdapService) connect() (*ldapgo.Conn, error) {
-	ldap.Mutex.Lock()
+	ldap.mutex.Lock()
+	defer ldap.mutex.Unlock()
 
 	conn, err := ldapgo.DialURL(ldap.Config.Address, ldapgo.DialWithTLSConfig(&tls.Config{
 		InsecureSkipVerify: ldap.Config.Insecure,
@@ -72,10 +73,8 @@ func (ldap *LdapService) connect() (*ldapgo.Conn, error) {
 		return nil, err
 	}
 
-	ldap.Mutex.Unlock()
-
 	// Set and return the connection
-	ldap.Conn = conn
+	ldap.conn = conn
 	return conn, nil
 }
 
@@ -92,12 +91,13 @@ func (ldap *LdapService) Search(username string) (string, error) {
 		nil,
 	)
 
-	ldap.Mutex.Lock()
-	searchResult, err := ldap.Conn.Search(searchRequest)
+	ldap.mutex.Lock()
+	defer ldap.mutex.Unlock()
+
+	searchResult, err := ldap.conn.Search(searchRequest)
 	if err != nil {
 		return "", err
 	}
-	ldap.Mutex.Unlock()
 
 	if len(searchResult.Entries) != 1 {
 		return "", fmt.Errorf("multiple or no entries found for user %s", username)
@@ -108,12 +108,12 @@ func (ldap *LdapService) Search(username string) (string, error) {
 }
 
 func (ldap *LdapService) Bind(userDN string, password string) error {
-	ldap.Mutex.Lock()
-	err := ldap.Conn.Bind(userDN, password)
+	ldap.mutex.Lock()
+	defer ldap.mutex.Unlock()
+	err := ldap.conn.Bind(userDN, password)
 	if err != nil {
 		return err
 	}
-	ldap.Mutex.Unlock()
 	return nil
 }
 
@@ -128,12 +128,12 @@ func (ldap *LdapService) heartbeat() error {
 		nil,
 	)
 
-	ldap.Mutex.Lock()
-	_, err := ldap.Conn.Search(searchRequest)
+	ldap.mutex.Lock()
+	defer ldap.mutex.Unlock()
+	_, err := ldap.conn.Search(searchRequest)
 	if err != nil {
 		return err
 	}
-	ldap.Mutex.Unlock()
 
 	// No error means the connection is alive
 	return nil
@@ -149,7 +149,7 @@ func (ldap *LdapService) reconnect() error {
 	exp.Reset()
 
 	operation := func() (*ldapgo.Conn, error) {
-		ldap.Conn.Close()
+		ldap.conn.Close()
 		conn, err := ldap.connect()
 		if err != nil {
 			return nil, err

internal/service/oauth_broker_service.go

@@ -5,6 +5,7 @@ import (
 	"tinyauth/internal/config"
 
 	"github.com/rs/zerolog/log"
+	"golang.org/x/exp/slices"
 )
 
 type OAuthService interface {
@@ -16,59 +17,60 @@ type OAuthService interface {
 }
 
 type OAuthBrokerService struct {
-	Services map[string]OAuthService
-	Configs  map[string]config.OAuthServiceConfig
+	services map[string]OAuthService
+	configs  map[string]config.OAuthServiceConfig
 }
 
 func NewOAuthBrokerService(configs map[string]config.OAuthServiceConfig) *OAuthBrokerService {
 	return &OAuthBrokerService{
-		Services: make(map[string]OAuthService),
-		Configs:  configs,
+		services: make(map[string]OAuthService),
+		configs:  configs,
 	}
 }
 
 func (broker *OAuthBrokerService) Init() error {
-	for name, cfg := range broker.Configs {
+	for name, cfg := range broker.configs {
 		switch name {
 		case "github":
 			service := NewGithubOAuthService(cfg)
-			broker.Services[name] = service
+			broker.services[name] = service
 		case "google":
 			service := NewGoogleOAuthService(cfg)
-			broker.Services[name] = service
+			broker.services[name] = service
 		default:
 			service := NewGenericOAuthService(cfg)
-			broker.Services[name] = service
+			broker.services[name] = service
 		}
 	}
 
-	for name, service := range broker.Services {
+	for name, service := range broker.services {
 		err := service.Init()
 		if err != nil {
-			log.Error().Err(err).Msgf("Failed to initialize OAuth service: %s", name)
+			log.Error().Err(err).Msgf("Failed to initialize OAuth service: %T", name)
 			return err
 		}
-		log.Info().Msgf("Initialized OAuth service: %s", name)
+		log.Info().Msgf("Initialized OAuth service: %T", name)
 	}
 
 	return nil
 }
 
 func (broker *OAuthBrokerService) GetConfiguredServices() []string {
-	services := make([]string, 0, len(broker.Services))
-	for name := range broker.Services {
+	services := make([]string, 0, len(broker.services))
+	for name := range broker.services {
 		services = append(services, name)
 	}
+	slices.Sort(services)
 	return services
 }
 
 func (broker *OAuthBrokerService) GetService(name string) (OAuthService, bool) {
-	service, exists := broker.Services[name]
+	service, exists := broker.services[name]
 	return service, exists
 }
 
 func (broker *OAuthBrokerService) GetUser(service string) (config.Claims, error) {
-	oauthService, exists := broker.Services[service]
+	oauthService, exists := broker.services[service]
 	if !exists {
 		return config.Claims{}, errors.New("oauth service not found")
 	}