refactor/handlers (#51)

* wip

* refactor: use prefix instead of patern in docker meta

* tests: fix tests

.github/workflows/release.yml

@@ -125,9 +125,9 @@ jobs:
         with:
           images: ghcr.io/${{ github.repository_owner }}/tinyauth
           tags: |
-            type=semver,pattern=v{{version}}
+            type=semver,pattern={{version}},prefix=v
-            type=semver,pattern=v{{major}}
+            type=semver,pattern={{major}},prefix=v
-            type=semver,pattern=v{{major}}.{{minor}}
+            type=semver,pattern={{major}}.{{minor}},prefix=v
 
       - name: Create manifest list and push
         working-directory: ${{ runner.temp }}/digests

cmd/root.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"errors"
+	"fmt"
 	"os"
 	"strings"
 	"time"
@@ -11,6 +12,7 @@ import (
 	"tinyauth/internal/assets"
 	"tinyauth/internal/auth"
 	"tinyauth/internal/docker"
+	"tinyauth/internal/handlers"
 	"tinyauth/internal/hooks"
 	"tinyauth/internal/providers"
 	"tinyauth/internal/types"
@@ -33,8 +35,8 @@ var rootCmd = &cobra.Command{
 
 		// Get config
 		var config types.Config
-		parseErr := viper.Unmarshal(&config)
+		err := viper.Unmarshal(&config)
-		HandleError(parseErr, "Failed to parse config")
+		HandleError(err, "Failed to parse config")
 
 		// Secrets
 		config.Secret = utils.GetSecret(config.Secret, config.SecretFile)
@@ -45,8 +47,8 @@ var rootCmd = &cobra.Command{
 
 		// Validate config
 		validator := validator.New()
-		validateErr := validator.Struct(config)
+		err = validator.Struct(config)
-		HandleError(validateErr, "Failed to validate config")
+		HandleError(err, "Failed to validate config")
 
 		// Logger
 		log.Logger = log.Level(zerolog.Level(config.LogLevel))
@@ -54,9 +56,8 @@ var rootCmd = &cobra.Command{
 
 		// Users
 		log.Info().Msg("Parsing users")
-		users, usersErr := utils.GetUsers(config.Users, config.UsersFile)
+		users, err := utils.GetUsers(config.Users, config.UsersFile)
-
+		HandleError(err, "Failed to parse users")
-		HandleError(usersErr, "Failed to parse users")
 
 		if len(users) == 0 && !utils.OAuthConfigured(config) {
 			HandleError(errors.New("no users or OAuth configured"), "No users or OAuth configured")
@@ -66,8 +67,15 @@ var rootCmd = &cobra.Command{
 		oauthWhitelist := utils.Filter(strings.Split(config.OAuthWhitelist, ","), func(val string) bool {
 			return val != ""
 		})
+
 		log.Debug().Msg("Parsed OAuth whitelist")
 
+		// Get domain
+		log.Debug().Msg("Getting domain")
+		domain, err := utils.GetUpperDomain(config.AppURL)
+		HandleError(err, "Failed to get upper domain")
+		log.Info().Str("domain", domain).Msg("Using domain for cookie store")
+
 		// Create OAuth config
 		oauthConfig := types.OAuthConfig{
 			GithubClientId:        config.GithubClientId,
@@ -85,7 +93,25 @@ var rootCmd = &cobra.Command{
 			AppURL:                config.AppURL,
 		}
 
-		log.Debug().Msg("Parsed OAuth config")
+		// Create handlers config
+		serverConfig := types.HandlersConfig{
+			AppURL:          config.AppURL,
+			Domain:          fmt.Sprintf(".%s", domain),
+			CookieSecure:    config.CookieSecure,
+			DisableContinue: config.DisableContinue,
+			Title:           config.Title,
+			GenericName:     config.GenericName,
+		}
+
+		// Create api config
+		apiConfig := types.APIConfig{
+			Port:          config.Port,
+			Address:       config.Address,
+			Secret:        config.Secret,
+			CookieSecure:  config.CookieSecure,
+			SessionExpiry: config.SessionExpiry,
+			Domain:        domain,
+		}
 
 		// Create docker service
 		docker := docker.NewDocker()
@@ -106,18 +132,11 @@ var rootCmd = &cobra.Command{
 		// Create hooks service
 		hooks := hooks.NewHooks(auth, providers)
 
+		// Create handlers
+		handlers := handlers.NewHandlers(serverConfig, auth, hooks, providers)
+
 		// Create API
-		api := api.NewAPI(types.APIConfig{
+		api := api.NewAPI(apiConfig, handlers)
-			Port:            config.Port,
-			Address:         config.Address,
-			Secret:          config.Secret,
-			AppURL:          config.AppURL,
-			CookieSecure:    config.CookieSecure,
-			DisableContinue: config.DisableContinue,
-			SessionExpiry:   config.SessionExpiry,
-			Title:           config.Title,
-			GenericName:     config.GenericName,
-		}, hooks, auth, providers)
 
 		// Setup routes
 		api.Init()
@@ -134,7 +153,7 @@ func Execute() {
 }
 
 func HandleError(err error, msg string) {
-	// If error log it and exit
+	// If error, log it and exit
 	if err != nil {
 		log.Fatal().Err(err).Msg(msg)
 	}

internal/api/api.go

@@ -3,42 +3,30 @@ package api
 import (
 	"fmt"
 	"io/fs"
-	"math/rand/v2"
 	"net/http"
-	"os"
 	"strings"
 	"time"
 	"tinyauth/internal/assets"
-	"tinyauth/internal/auth"
+	"tinyauth/internal/handlers"
-	"tinyauth/internal/hooks"
-	"tinyauth/internal/providers"
 	"tinyauth/internal/types"
-	"tinyauth/internal/utils"
 
 	"github.com/gin-contrib/sessions"
 	"github.com/gin-contrib/sessions/cookie"
 	"github.com/gin-gonic/gin"
-	"github.com/google/go-querystring/query"
-	"github.com/pquerna/otp/totp"
 	"github.com/rs/zerolog/log"
 )
 
-func NewAPI(config types.APIConfig, hooks *hooks.Hooks, auth *auth.Auth, providers *providers.Providers) *API {
+func NewAPI(config types.APIConfig, handlers *handlers.Handlers) *API {
 	return &API{
 		Config:   config,
-		Hooks:     hooks,
+		Handlers: handlers,
-		Auth:      auth,
-		Providers: providers,
 	}
 }
 
 type API struct {
 	Config   types.APIConfig
 	Router   *gin.Engine
-	Hooks     *hooks.Hooks
+	Handlers *handlers.Handlers
-	Auth      *auth.Auth
-	Providers *providers.Providers
-	Domain    string
 }
 
 func (api *API) Init() {
@@ -52,10 +40,10 @@ func (api *API) Init() {
 
 	// Read UI assets
 	log.Debug().Msg("Setting up assets")
-	dist, distErr := fs.Sub(assets.Assets, "dist")
+	dist, err := fs.Sub(assets.Assets, "dist")
 
-	if distErr != nil {
+	if err != nil {
-		log.Fatal().Err(distErr).Msg("Failed to get UI assets")
+		log.Fatal().Err(err).Msg("Failed to get UI assets")
 	}
 
 	// Create file server
@@ -66,22 +54,9 @@ func (api *API) Init() {
 	log.Debug().Msg("Setting up cookie store")
 	store := cookie.NewStore([]byte(api.Config.Secret))
 
-	// Get domain to use for session cookies
-	log.Debug().Msg("Getting domain")
-	domain, domainErr := utils.GetRootURL(api.Config.AppURL)
-
-	if domainErr != nil {
-		log.Fatal().Err(domainErr).Msg("Failed to get domain")
-		os.Exit(1)
-	}
-
-	log.Info().Str("domain", domain).Msg("Using domain for cookies")
-
-	api.Domain = fmt.Sprintf(".%s", domain)
-
 	// Use session middleware
 	store.Options(sessions.Options{
-		Domain:   api.Domain,
+		Domain:   api.Config.Domain,
 		Path:     "/",
 		HttpOnly: true,
 		Secure:   api.Config.CookieSecure,
@@ -94,17 +69,7 @@ func (api *API) Init() {
 	router.Use(func(c *gin.Context) {
 		// If not an API request, serve the UI
 		if !strings.HasPrefix(c.Request.URL.Path, "/api") {
-			_, err := fs.Stat(dist, strings.TrimPrefix(c.Request.URL.Path, "/"))
-
-			// If the file doesn't exist, serve the index.html
-			if os.IsNotExist(err) {
-				c.Request.URL.Path = "/"
-			}
-
-			// Serve the file
 			fileServer.ServeHTTP(c.Writer, c.Request)
-
-			// Stop further processing
 			c.Abort()
 		}
 	})
@@ -114,608 +79,24 @@ func (api *API) Init() {
 }
 
 func (api *API) SetupRoutes() {
-	api.Router.GET("/api/auth/:proxy", func(c *gin.Context) {
+	// Proxy
-		// Create struct for proxy
+	api.Router.GET("/api/auth/:proxy", api.Handlers.AuthHandler)
-		var proxy types.Proxy
 
-		// Bind URI
+	// Auth
-		bindErr := c.BindUri(&proxy)
+	api.Router.POST("/api/login", api.Handlers.LoginHandler)
+	api.Router.POST("/api/totp", api.Handlers.TotpHandler)
+	api.Router.POST("/api/logout", api.Handlers.LogoutHandler)
 
-		// Handle error
+	// Context
-		if bindErr != nil {
+	api.Router.GET("/api/app", api.Handlers.AppHandler)
-			log.Error().Err(bindErr).Msg("Failed to bind URI")
+	api.Router.GET("/api/user", api.Handlers.UserHandler)
-			c.JSON(400, gin.H{
-				"status":  400,
-				"message": "Bad Request",
-			})
-			return
-		}
 
-		// Check if the request is coming from a browser (tools like curl/bruno use */* and they don't include the text/html)
+	// OAuth
-		isBrowser := strings.Contains(c.Request.Header.Get("Accept"), "text/html")
+	api.Router.GET("/api/oauth/url/:provider", api.Handlers.OauthUrlHandler)
+	api.Router.GET("/api/oauth/callback/:provider", api.Handlers.OauthCallbackHandler)
 
-		if isBrowser {
+	// App
-			log.Debug().Msg("Request is most likely coming from a browser")
+	api.Router.GET("/api/healthcheck", api.Handlers.HealthcheckHandler)
-		} else {
-			log.Debug().Msg("Request is most likely not coming from a browser")
-		}
-
-		log.Debug().Interface("proxy", proxy.Proxy).Msg("Got proxy")
-
-		// Check if auth is enabled
-		authEnabled, authEnabledErr := api.Auth.AuthEnabled(c)
-
-		// Handle error
-		if authEnabledErr != nil {
-			// Return 500 if nginx is the proxy or if the request is not coming from a browser
-			if proxy.Proxy == "nginx" || !isBrowser {
-				log.Error().Err(authEnabledErr).Msg("Failed to check if auth is enabled")
-				c.JSON(500, gin.H{
-					"status":  500,
-					"message": "Internal Server Error",
-				})
-				return
-			}
-
-			// Return the internal server error page
-			if api.handleError(c, "Failed to check if auth is enabled", authEnabledErr) {
-				return
-			}
-		}
-
-		// If auth is not enabled, return 200
-		if !authEnabled {
-			// The user is allowed to access the app
-			c.JSON(200, gin.H{
-				"status":  200,
-				"message": "Authenticated",
-			})
-
-			// Stop further processing
-			return
-		}
-
-		// Get user context
-		userContext := api.Hooks.UseUserContext(c)
-
-		// Get headers
-		uri := c.Request.Header.Get("X-Forwarded-Uri")
-		proto := c.Request.Header.Get("X-Forwarded-Proto")
-		host := c.Request.Header.Get("X-Forwarded-Host")
-
-		// Check if user is logged in
-		if userContext.IsLoggedIn {
-			log.Debug().Msg("Authenticated")
-
-			// Check if user is allowed to access subdomain, if request is nginx.example.com the subdomain (resource) is nginx
-			appAllowed, appAllowedErr := api.Auth.ResourceAllowed(c, userContext)
-
-			// Check if there was an error
-			if appAllowedErr != nil {
-				// Return 500 if nginx is the proxy or if the request is not coming from a browser
-				if proxy.Proxy == "nginx" || !isBrowser {
-					log.Error().Err(appAllowedErr).Msg("Failed to check if app is allowed")
-					c.JSON(500, gin.H{
-						"status":  500,
-						"message": "Internal Server Error",
-					})
-					return
-				}
-
-				// Return the internal server error page
-				if api.handleError(c, "Failed to check if app is allowed", appAllowedErr) {
-					return
-				}
-			}
-
-			log.Debug().Bool("appAllowed", appAllowed).Msg("Checking if app is allowed")
-
-			// The user is not allowed to access the app
-			if !appAllowed {
-				log.Warn().Str("username", userContext.Username).Str("host", host).Msg("User not allowed")
-
-				// Set WWW-Authenticate header
-				c.Header("WWW-Authenticate", "Basic realm=\"tinyauth\"")
-
-				// Return 401 if nginx is the proxy or if the request is not coming from a browser
-				if proxy.Proxy == "nginx" || !isBrowser {
-					c.JSON(401, gin.H{
-						"status":  401,
-						"message": "Unauthorized",
-					})
-					return
-				}
-
-				// Build query
-				queries, queryErr := query.Values(types.UnauthorizedQuery{
-					Username: userContext.Username,
-					Resource: strings.Split(host, ".")[0],
-				})
-
-				// Handle error (no need to check for nginx/headers since we are sure we are using caddy/traefik)
-				if api.handleError(c, "Failed to build query", queryErr) {
-					return
-				}
-
-				// We are using caddy/traefik so redirect
-				c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", api.Config.AppURL, queries.Encode()))
-
-				// Stop further processing
-				return
-			}
-
-			// Set the user header
-			c.Header("Remote-User", userContext.Username)
-
-			// The user is allowed to access the app
-			c.JSON(200, gin.H{
-				"status":  200,
-				"message": "Authenticated",
-			})
-
-			// Stop further processing
-			return
-		}
-
-		// The user is not logged in
-		log.Debug().Msg("Unauthorized")
-
-		// Set www-authenticate header
-		c.Header("WWW-Authenticate", "Basic realm=\"tinyauth\"")
-
-		// Return 401 if nginx is the proxy or if the request is not coming from a browser
-		if proxy.Proxy == "nginx" || !isBrowser {
-			c.JSON(401, gin.H{
-				"status":  401,
-				"message": "Unauthorized",
-			})
-			return
-		}
-
-		// Build query
-		queries, queryErr := query.Values(types.LoginQuery{
-			RedirectURI: fmt.Sprintf("%s://%s%s", proto, host, uri),
-		})
-
-		// Handle error (no need to check for nginx/headers since we are sure we are using caddy/traefik)
-		if api.handleError(c, "Failed to build query", queryErr) {
-			return
-		}
-
-		log.Debug().Interface("redirect_uri", fmt.Sprintf("%s://%s%s", proto, host, uri)).Msg("Redirecting to login")
-
-		// Redirect to login
-		c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/?%s", api.Config.AppURL, queries.Encode()))
-	})
-
-	api.Router.POST("/api/login", func(c *gin.Context) {
-		// Create login struct
-		var login types.LoginRequest
-
-		// Bind JSON
-		err := c.BindJSON(&login)
-
-		// Handle error
-		if err != nil {
-			log.Error().Err(err).Msg("Failed to bind JSON")
-			c.JSON(400, gin.H{
-				"status":  400,
-				"message": "Bad Request",
-			})
-			return
-		}
-
-		log.Debug().Msg("Got login request")
-
-		// Get user based on username
-		user := api.Auth.GetUser(login.Username)
-
-		// User does not exist
-		if user == nil {
-			log.Debug().Str("username", login.Username).Msg("User not found")
-			c.JSON(401, gin.H{
-				"status":  401,
-				"message": "Unauthorized",
-			})
-			return
-		}
-
-		log.Debug().Msg("Got user")
-
-		// Check if password is correct
-		if !api.Auth.CheckPassword(*user, login.Password) {
-			log.Debug().Str("username", login.Username).Msg("Password incorrect")
-			c.JSON(401, gin.H{
-				"status":  401,
-				"message": "Unauthorized",
-			})
-			return
-		}
-
-		log.Debug().Msg("Password correct, checking totp")
-
-		// Check if user has totp enabled
-		if user.TotpSecret != "" {
-			log.Debug().Msg("Totp enabled")
-
-			// Set totp pending cookie
-			api.Auth.CreateSessionCookie(c, &types.SessionCookie{
-				Username:    login.Username,
-				Provider:    "username",
-				TotpPending: true,
-			})
-
-			// Return totp required
-			c.JSON(200, gin.H{
-				"status":      200,
-				"message":     "Waiting for totp",
-				"totpPending": true,
-			})
-
-			// Stop further processing
-			return
-		}
-
-		// Create session cookie with username as provider
-		api.Auth.CreateSessionCookie(c, &types.SessionCookie{
-			Username: login.Username,
-			Provider: "username",
-		})
-
-		// Return logged in
-		c.JSON(200, gin.H{
-			"status":      200,
-			"message":     "Logged in",
-			"totpPending": false,
-		})
-	})
-
-	api.Router.POST("/api/totp", func(c *gin.Context) {
-		// Create totp struct
-		var totpReq types.TotpRequest
-
-		// Bind JSON
-		err := c.BindJSON(&totpReq)
-
-		// Handle error
-		if err != nil {
-			log.Error().Err(err).Msg("Failed to bind JSON")
-			c.JSON(400, gin.H{
-				"status":  400,
-				"message": "Bad Request",
-			})
-			return
-		}
-
-		log.Debug().Msg("Checking totp")
-
-		// Get user context
-		userContext := api.Hooks.UseUserContext(c)
-
-		// Check if we have a user
-		if userContext.Username == "" {
-			log.Debug().Msg("No user context")
-			c.JSON(401, gin.H{
-				"status":  401,
-				"message": "Unauthorized",
-			})
-			return
-		}
-
-		// Get user
-		user := api.Auth.GetUser(userContext.Username)
-
-		// Check if user exists
-		if user == nil {
-			log.Debug().Msg("User not found")
-			c.JSON(401, gin.H{
-				"status":  401,
-				"message": "Unauthorized",
-			})
-			return
-		}
-
-		// Check if totp is correct
-		totpOk := totp.Validate(totpReq.Code, user.TotpSecret)
-
-		// TOTP is incorrect
-		if !totpOk {
-			log.Debug().Msg("Totp incorrect")
-			c.JSON(401, gin.H{
-				"status":  401,
-				"message": "Unauthorized",
-			})
-			return
-		}
-
-		log.Debug().Msg("Totp correct")
-
-		// Create session cookie with username as provider
-		api.Auth.CreateSessionCookie(c, &types.SessionCookie{
-			Username: user.Username,
-			Provider: "username",
-		})
-
-		// Return logged in
-		c.JSON(200, gin.H{
-			"status":  200,
-			"message": "Logged in",
-		})
-	})
-
-	api.Router.POST("/api/logout", func(c *gin.Context) {
-		log.Debug().Msg("Logging out")
-
-		// Delete session cookie
-		api.Auth.DeleteSessionCookie(c)
-
-		log.Debug().Msg("Cleaning up redirect cookie")
-
-		// Clean up redirect cookie if it exists
-		c.SetCookie("tinyauth_redirect_uri", "", -1, "/", api.Domain, api.Config.CookieSecure, true)
-
-		// Return logged out
-		c.JSON(200, gin.H{
-			"status":  200,
-			"message": "Logged out",
-		})
-	})
-
-	api.Router.GET("/api/app", func(c *gin.Context) {
-		log.Debug().Msg("Getting app context")
-
-		// Get configured providers
-		configuredProviders := api.Providers.GetConfiguredProviders()
-
-		// We have username/password configured so add it to our providers
-		if api.Auth.UserAuthConfigured() {
-			configuredProviders = append(configuredProviders, "username")
-		}
-
-		// Create app context struct
-		appContext := types.AppContext{
-			Status:              200,
-			Message:             "Ok",
-			ConfiguredProviders: configuredProviders,
-			DisableContinue:     api.Config.DisableContinue,
-			Title:               api.Config.Title,
-			GenericName:         api.Config.GenericName,
-		}
-
-		// Return app context
-		c.JSON(200, appContext)
-	})
-
-	api.Router.GET("/api/user", func(c *gin.Context) {
-		log.Debug().Msg("Getting user context")
-
-		// Get user context
-		userContext := api.Hooks.UseUserContext(c)
-
-		// Create user context response
-		userContextResponse := types.UserContextResponse{
-			Status:      200,
-			IsLoggedIn:  userContext.IsLoggedIn,
-			Username:    userContext.Username,
-			Provider:    userContext.Provider,
-			Oauth:       userContext.OAuth,
-			TotpPending: userContext.TotpPending,
-		}
-
-		// If we are not logged in we set the status to 401 and add the WWW-Authenticate header else we set it to 200
-		if !userContext.IsLoggedIn {
-			log.Debug().Msg("Unauthorized")
-			c.Header("WWW-Authenticate", "Basic realm=\"tinyauth\"")
-			userContextResponse.Message = "Unauthorized"
-		} else {
-			log.Debug().Interface("userContext", userContext).Msg("Authenticated")
-			userContextResponse.Message = "Authenticated"
-		}
-
-		// Return user context
-		c.JSON(200, userContextResponse)
-	})
-
-	api.Router.GET("/api/oauth/url/:provider", func(c *gin.Context) {
-		// Create struct for OAuth request
-		var request types.OAuthRequest
-
-		// Bind URI
-		bindErr := c.BindUri(&request)
-
-		// Handle error
-		if bindErr != nil {
-			log.Error().Err(bindErr).Msg("Failed to bind URI")
-			c.JSON(400, gin.H{
-				"status":  400,
-				"message": "Bad Request",
-			})
-			return
-		}
-
-		log.Debug().Msg("Got OAuth request")
-
-		// Check if provider exists
-		provider := api.Providers.GetProvider(request.Provider)
-
-		// Provider does not exist
-		if provider == nil {
-			c.JSON(404, gin.H{
-				"status":  404,
-				"message": "Not Found",
-			})
-			return
-		}
-
-		log.Debug().Str("provider", request.Provider).Msg("Got provider")
-
-		// Get auth URL
-		authURL := provider.GetAuthURL()
-
-		log.Debug().Msg("Got auth URL")
-
-		// Get redirect URI
-		redirectURI := c.Query("redirect_uri")
-
-		// Set redirect cookie if redirect URI is provided
-		if redirectURI != "" {
-			log.Debug().Str("redirectURI", redirectURI).Msg("Setting redirect cookie")
-			c.SetCookie("tinyauth_redirect_uri", redirectURI, 3600, "/", api.Domain, api.Config.CookieSecure, true)
-		}
-
-		// Tailscale does not have an auth url so we create a random code (does not need to be secure) to avoid caching and send it
-		if request.Provider == "tailscale" {
-			// Build tailscale query
-			tailscaleQuery, tailscaleQueryErr := query.Values(types.TailscaleQuery{
-				Code: (1000 + rand.IntN(9000)),
-			})
-
-			// Handle error
-			if tailscaleQueryErr != nil {
-				log.Error().Err(tailscaleQueryErr).Msg("Failed to build query")
-				c.JSON(500, gin.H{
-					"status":  500,
-					"message": "Internal Server Error",
-				})
-				return
-			}
-
-			// Return tailscale URL (immidiately redirects to the callback)
-			c.JSON(200, gin.H{
-				"status":  200,
-				"message": "Ok",
-				"url":     fmt.Sprintf("%s/api/oauth/callback/tailscale?%s", api.Config.AppURL, tailscaleQuery.Encode()),
-			})
-			return
-		}
-
-		// Return auth URL
-		c.JSON(200, gin.H{
-			"status":  200,
-			"message": "Ok",
-			"url":     authURL,
-		})
-	})
-
-	api.Router.GET("/api/oauth/callback/:provider", func(c *gin.Context) {
-		// Create struct for OAuth request
-		var providerName types.OAuthRequest
-
-		// Bind URI
-		bindErr := c.BindUri(&providerName)
-
-		// Handle error
-		if api.handleError(c, "Failed to bind URI", bindErr) {
-			return
-		}
-
-		log.Debug().Interface("provider", providerName.Provider).Msg("Got provider name")
-
-		// Get code
-		code := c.Query("code")
-
-		// Code empty so redirect to error
-		if code == "" {
-			log.Error().Msg("No code provided")
-			c.Redirect(http.StatusPermanentRedirect, "/error")
-			return
-		}
-
-		log.Debug().Msg("Got code")
-
-		// Get provider
-		provider := api.Providers.GetProvider(providerName.Provider)
-
-		log.Debug().Str("provider", providerName.Provider).Msg("Got provider")
-
-		// Provider does not exist
-		if provider == nil {
-			c.Redirect(http.StatusPermanentRedirect, "/not-found")
-			return
-		}
-
-		// Exchange token (authenticates user)
-		_, tokenErr := provider.ExchangeToken(code)
-
-		log.Debug().Msg("Got token")
-
-		// Handle error
-		if api.handleError(c, "Failed to exchange token", tokenErr) {
-			return
-		}
-
-		// Get email
-		email, emailErr := api.Providers.GetUser(providerName.Provider)
-
-		log.Debug().Str("email", email).Msg("Got email")
-
-		// Handle error
-		if api.handleError(c, "Failed to get user", emailErr) {
-			return
-		}
-
-		// Email is not whitelisted
-		if !api.Auth.EmailWhitelisted(email) {
-			log.Warn().Str("email", email).Msg("Email not whitelisted")
-
-			// Build query
-			unauthorizedQuery, unauthorizedQueryErr := query.Values(types.UnauthorizedQuery{
-				Username: email,
-			})
-
-			// Handle error
-			if api.handleError(c, "Failed to build query", unauthorizedQueryErr) {
-				return
-			}
-
-			// Redirect to unauthorized
-			c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/unauthorized?%s", api.Config.AppURL, unauthorizedQuery.Encode()))
-		}
-
-		log.Debug().Msg("Email whitelisted")
-
-		// Create session cookie
-		api.Auth.CreateSessionCookie(c, &types.SessionCookie{
-			Username: email,
-			Provider: providerName.Provider,
-		})
-
-		// Get redirect URI
-		redirectURI, redirectURIErr := c.Cookie("tinyauth_redirect_uri")
-
-		// If it is empty it means that no redirect_uri was provided to the login screen so we just log in
-		if redirectURIErr != nil {
-			c.Redirect(http.StatusPermanentRedirect, api.Config.AppURL)
-		}
-
-		log.Debug().Str("redirectURI", redirectURI).Msg("Got redirect URI")
-
-		// Clean up redirect cookie since we already have the value
-		c.SetCookie("tinyauth_redirect_uri", "", -1, "/", api.Domain, api.Config.CookieSecure, true)
-
-		// Build query
-		redirectQuery, redirectQueryErr := query.Values(types.LoginQuery{
-			RedirectURI: redirectURI,
-		})
-
-		log.Debug().Msg("Got redirect query")
-
-		// Handle error
-		if api.handleError(c, "Failed to build query", redirectQueryErr) {
-			return
-		}
-
-		// Redirect to continue with the redirect URI
-		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/continue?%s", api.Config.AppURL, redirectQuery.Encode()))
-	})
-
-	// Simple healthcheck
-	api.Router.GET("/api/healthcheck", func(c *gin.Context) {
-		c.JSON(200, gin.H{
-			"status":  200,
-			"message": "OK",
-		})
-	})
 }
 
 func (api *API) Run() {
@@ -724,23 +105,12 @@ func (api *API) Run() {
 	// Run server
 	err := api.Router.Run(fmt.Sprintf("%s:%d", api.Config.Address, api.Config.Port))
 
-	// Check error
+	// Check for errors
 	if err != nil {
 		log.Fatal().Err(err).Msg("Failed to start server")
 	}
 }
 
-// handleError logs the error and redirects to the error page (only meant for stuff the user may access does not apply for login paths)
-func (api *API) handleError(c *gin.Context, msg string, err error) bool {
-	// If error is not nil log it and redirect to error page also return true so we can stop further processing
-	if err != nil {
-		log.Error().Err(err).Msg(msg)
-		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", api.Config.AppURL))
-		return true
-	}
-	return false
-}
-
 // zerolog is a middleware for gin that logs requests using zerolog
 func zerolog() gin.HandlerFunc {
 	return func(c *gin.Context) {

internal/api/api_test.go

@@ -5,11 +5,13 @@ import (
 	"io"
 	"net/http"
 	"net/http/httptest"
+	"reflect"
 	"strings"
 	"testing"
 	"tinyauth/internal/api"
 	"tinyauth/internal/auth"
 	"tinyauth/internal/docker"
+	"tinyauth/internal/handlers"
 	"tinyauth/internal/hooks"
 	"tinyauth/internal/providers"
 	"tinyauth/internal/types"
@@ -22,10 +24,18 @@ var apiConfig = types.APIConfig{
 	Port:          8080,
 	Address:       "0.0.0.0",
 	Secret:        "super-secret-api-thing-for-tests", // It is 32 chars long
-	AppURL:          "http://tinyauth.localhost",
 	CookieSecure:  false,
 	SessionExpiry: 3600,
+}
+
+// Simple handlers config for tests
+var handlersConfig = types.HandlersConfig{
+	AppURL:          "http://localhost:8080",
+	Domain:          ".localhost",
+	CookieSecure:    false,
 	DisableContinue: false,
+	Title:           "Tinyauth",
+	GenericName:     "Generic",
 }
 
 // Cookie
@@ -67,8 +77,11 @@ func getAPI(t *testing.T) *api.API {
 	// Create hooks service
 	hooks := hooks.NewHooks(auth, providers)
 
+	// Create handlers service
+	handlers := handlers.NewHandlers(handlersConfig, auth, hooks, providers)
+
 	// Create API
-	api := api.NewAPI(apiConfig, hooks, auth, providers)
+	api := api.NewAPI(apiConfig, handlers)
 
 	// Setup routes
 	api.Init()
@@ -123,6 +136,70 @@ func TestLogin(t *testing.T) {
 	}
 }
 
+// Test app context
+func TestAppContext(t *testing.T) {
+	t.Log("Testing app context")
+
+	// Get API
+	api := getAPI(t)
+
+	// Create recorder
+	recorder := httptest.NewRecorder()
+
+	// Create request
+	req, err := http.NewRequest("GET", "/api/app", nil)
+
+	// Check if there was an error
+	if err != nil {
+		t.Fatalf("Error creating request: %v", err)
+	}
+
+	// Set the cookie
+	req.AddCookie(&http.Cookie{
+		Name:  "tinyauth",
+		Value: cookie,
+	})
+
+	// Serve the request
+	api.Router.ServeHTTP(recorder, req)
+
+	// Assert
+	assert.Equal(t, recorder.Code, http.StatusOK)
+
+	// Read the body of the response
+	body, bodyErr := io.ReadAll(recorder.Body)
+
+	// Check if there was an error
+	if bodyErr != nil {
+		t.Fatalf("Error getting body: %v", bodyErr)
+	}
+
+	// Unmarshal the body into the user struct
+	var app types.AppContext
+
+	jsonErr := json.Unmarshal(body, &app)
+
+	// Check if there was an error
+	if jsonErr != nil {
+		t.Fatalf("Error unmarshalling body: %v", jsonErr)
+	}
+
+	// Create tests values
+	expected := types.AppContext{
+		Status:              200,
+		Message:             "OK",
+		ConfiguredProviders: []string{"username"},
+		DisableContinue:     false,
+		Title:               "Tinyauth",
+		GenericName:         "Generic",
+	}
+
+	// We should get the username back
+	if !reflect.DeepEqual(app, expected) {
+		t.Fatalf("Expected %v, got %v", expected, app)
+	}
+}
+
 // Test user context
 func TestUserContext(t *testing.T) {
 	t.Log("Testing user context")

internal/handlers/handlers.go

@@ -0,0 +1,634 @@
+package handlers
+
+import (
+	"fmt"
+	"math/rand/v2"
+	"net/http"
+	"strings"
+	"tinyauth/internal/auth"
+	"tinyauth/internal/hooks"
+	"tinyauth/internal/providers"
+	"tinyauth/internal/types"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/go-querystring/query"
+	"github.com/pquerna/otp/totp"
+	"github.com/rs/zerolog/log"
+)
+
+func NewHandlers(config types.HandlersConfig, auth *auth.Auth, hooks *hooks.Hooks, providers *providers.Providers) *Handlers {
+	return &Handlers{
+		Config:    config,
+		Auth:      auth,
+		Hooks:     hooks,
+		Providers: providers,
+	}
+}
+
+type Handlers struct {
+	Config    types.HandlersConfig
+	Auth      *auth.Auth
+	Hooks     *hooks.Hooks
+	Providers *providers.Providers
+}
+
+func (h *Handlers) AuthHandler(c *gin.Context) {
+	// Create struct for proxy
+	var proxy types.Proxy
+
+	// Bind URI
+	err := c.BindUri(&proxy)
+
+	// Handle error
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to bind URI")
+		c.JSON(400, gin.H{
+			"status":  400,
+			"message": "Bad Request",
+		})
+		return
+	}
+
+	// Check if the request is coming from a browser (tools like curl/bruno use */* and they don't include the text/html)
+	isBrowser := strings.Contains(c.Request.Header.Get("Accept"), "text/html")
+
+	if isBrowser {
+		log.Debug().Msg("Request is most likely coming from a browser")
+	} else {
+		log.Debug().Msg("Request is most likely not coming from a browser")
+	}
+
+	log.Debug().Interface("proxy", proxy.Proxy).Msg("Got proxy")
+
+	// Check if auth is enabled
+	authEnabled, err := h.Auth.AuthEnabled(c)
+
+	// Handle error
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to check if auth is enabled")
+
+		if proxy.Proxy == "nginx" || !isBrowser {
+			c.JSON(500, gin.H{
+				"status":  500,
+				"message": "Internal Server Error",
+			})
+			return
+		}
+
+		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+		return
+	}
+
+	// If auth is not enabled, return 200
+	if !authEnabled {
+		c.JSON(200, gin.H{
+			"status":  200,
+			"message": "Authenticated",
+		})
+		return
+	}
+
+	// Get user context
+	userContext := h.Hooks.UseUserContext(c)
+
+	// Get headers
+	uri := c.Request.Header.Get("X-Forwarded-Uri")
+	proto := c.Request.Header.Get("X-Forwarded-Proto")
+	host := c.Request.Header.Get("X-Forwarded-Host")
+
+	// Check if user is logged in
+	if userContext.IsLoggedIn {
+		log.Debug().Msg("Authenticated")
+
+		// Check if user is allowed to access subdomain, if request is nginx.example.com the subdomain (resource) is nginx
+		appAllowed, err := h.Auth.ResourceAllowed(c, userContext)
+
+		// Check if there was an error
+		if err != nil {
+			log.Error().Err(err).Msg("Failed to check if app is allowed")
+
+			if proxy.Proxy == "nginx" || !isBrowser {
+				c.JSON(500, gin.H{
+					"status":  500,
+					"message": "Internal Server Error",
+				})
+				return
+			}
+
+			c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+			return
+		}
+
+		log.Debug().Bool("appAllowed", appAllowed).Msg("Checking if app is allowed")
+
+		// The user is not allowed to access the app
+		if !appAllowed {
+			log.Warn().Str("username", userContext.Username).Str("host", host).Msg("User not allowed")
+
+			// Set WWW-Authenticate header
+			c.Header("WWW-Authenticate", "Basic realm=\"tinyauth\"")
+
+			if proxy.Proxy == "nginx" || !isBrowser {
+				c.JSON(401, gin.H{
+					"status":  401,
+					"message": "Unauthorized",
+				})
+				return
+			}
+
+			// Build query
+			queries, err := query.Values(types.UnauthorizedQuery{
+				Username: userContext.Username,
+				Resource: strings.Split(host, ".")[0],
+			})
+
+			// Handle error (no need to check for nginx/headers since we are sure we are using caddy/traefik)
+			if err != nil {
+				log.Error().Err(err).Msg("Failed to build query")
+				c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+				return
+			}
+
+			// We are using caddy/traefik so redirect
+			c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/unauthorized?%s", h.Config.AppURL, queries.Encode()))
+			return
+		}
+
+		// Set the user header
+		c.Header("Remote-User", userContext.Username)
+
+		// The user is allowed to access the app
+		c.JSON(200, gin.H{
+			"status":  200,
+			"message": "Authenticated",
+		})
+		return
+	}
+
+	// The user is not logged in
+	log.Debug().Msg("Unauthorized")
+
+	// Set www-authenticate header
+	c.Header("WWW-Authenticate", "Basic realm=\"tinyauth\"")
+
+	if proxy.Proxy == "nginx" || !isBrowser {
+		c.JSON(401, gin.H{
+			"status":  401,
+			"message": "Unauthorized",
+		})
+		return
+	}
+
+	queries, err := query.Values(types.LoginQuery{
+		RedirectURI: fmt.Sprintf("%s://%s%s", proto, host, uri),
+	})
+
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to build query")
+		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+		return
+	}
+
+	log.Debug().Interface("redirect_uri", fmt.Sprintf("%s://%s%s", proto, host, uri)).Msg("Redirecting to login")
+
+	// Redirect to login
+	c.Redirect(http.StatusTemporaryRedirect, fmt.Sprintf("%s/?%s", h.Config.AppURL, queries.Encode()))
+}
+
+func (h *Handlers) LoginHandler(c *gin.Context) {
+	// Create login struct
+	var login types.LoginRequest
+
+	// Bind JSON
+	err := c.BindJSON(&login)
+
+	// Handle error
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to bind JSON")
+		c.JSON(400, gin.H{
+			"status":  400,
+			"message": "Bad Request",
+		})
+		return
+	}
+
+	log.Debug().Msg("Got login request")
+
+	// Get user based on username
+	user := h.Auth.GetUser(login.Username)
+
+	// User does not exist
+	if user == nil {
+		log.Debug().Str("username", login.Username).Msg("User not found")
+		c.JSON(401, gin.H{
+			"status":  401,
+			"message": "Unauthorized",
+		})
+		return
+	}
+
+	log.Debug().Msg("Got user")
+
+	// Check if password is correct
+	if !h.Auth.CheckPassword(*user, login.Password) {
+		log.Debug().Str("username", login.Username).Msg("Password incorrect")
+		c.JSON(401, gin.H{
+			"status":  401,
+			"message": "Unauthorized",
+		})
+		return
+	}
+
+	log.Debug().Msg("Password correct, checking totp")
+
+	// Check if user has totp enabled
+	if user.TotpSecret != "" {
+		log.Debug().Msg("Totp enabled")
+
+		// Set totp pending cookie
+		h.Auth.CreateSessionCookie(c, &types.SessionCookie{
+			Username:    login.Username,
+			Provider:    "username",
+			TotpPending: true,
+		})
+
+		// Return totp required
+		c.JSON(200, gin.H{
+			"status":      200,
+			"message":     "Waiting for totp",
+			"totpPending": true,
+		})
+
+		// Stop further processing
+		return
+	}
+
+	// Create session cookie with username as provider
+	h.Auth.CreateSessionCookie(c, &types.SessionCookie{
+		Username: login.Username,
+		Provider: "username",
+	})
+
+	// Return logged in
+	c.JSON(200, gin.H{
+		"status":      200,
+		"message":     "Logged in",
+		"totpPending": false,
+	})
+}
+
+func (h *Handlers) TotpHandler(c *gin.Context) {
+	// Create totp struct
+	var totpReq types.TotpRequest
+
+	// Bind JSON
+	err := c.BindJSON(&totpReq)
+
+	// Handle error
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to bind JSON")
+		c.JSON(400, gin.H{
+			"status":  400,
+			"message": "Bad Request",
+		})
+		return
+	}
+
+	log.Debug().Msg("Checking totp")
+
+	// Get user context
+	userContext := h.Hooks.UseUserContext(c)
+
+	// Check if we have a user
+	if userContext.Username == "" {
+		log.Debug().Msg("No user context")
+		c.JSON(401, gin.H{
+			"status":  401,
+			"message": "Unauthorized",
+		})
+		return
+	}
+
+	// Get user
+	user := h.Auth.GetUser(userContext.Username)
+
+	// Check if user exists
+	if user == nil {
+		log.Debug().Msg("User not found")
+		c.JSON(401, gin.H{
+			"status":  401,
+			"message": "Unauthorized",
+		})
+		return
+	}
+
+	// Check if totp is correct
+	totpOk := totp.Validate(totpReq.Code, user.TotpSecret)
+
+	// TOTP is incorrect
+	if !totpOk {
+		log.Debug().Msg("Totp incorrect")
+		c.JSON(401, gin.H{
+			"status":  401,
+			"message": "Unauthorized",
+		})
+		return
+	}
+
+	log.Debug().Msg("Totp correct")
+
+	// Create session cookie with username as provider
+	h.Auth.CreateSessionCookie(c, &types.SessionCookie{
+		Username: user.Username,
+		Provider: "username",
+	})
+
+	// Return logged in
+	c.JSON(200, gin.H{
+		"status":  200,
+		"message": "Logged in",
+	})
+}
+
+func (h *Handlers) LogoutHandler(c *gin.Context) {
+	log.Debug().Msg("Logging out")
+
+	// Delete session cookie
+	h.Auth.DeleteSessionCookie(c)
+
+	log.Debug().Msg("Cleaning up redirect cookie")
+
+	// Clean up redirect cookie if it exists
+	c.SetCookie("tinyauth_redirect_uri", "", -1, "/", h.Config.Domain, h.Config.CookieSecure, true)
+
+	// Return logged out
+	c.JSON(200, gin.H{
+		"status":  200,
+		"message": "Logged out",
+	})
+}
+
+func (h *Handlers) AppHandler(c *gin.Context) {
+	log.Debug().Msg("Getting app context")
+
+	// Get configured providers
+	configuredProviders := h.Providers.GetConfiguredProviders()
+
+	// We have username/password configured so add it to our providers
+	if h.Auth.UserAuthConfigured() {
+		configuredProviders = append(configuredProviders, "username")
+	}
+
+	// Create app context struct
+	appContext := types.AppContext{
+		Status:              200,
+		Message:             "OK",
+		ConfiguredProviders: configuredProviders,
+		DisableContinue:     h.Config.DisableContinue,
+		Title:               h.Config.Title,
+		GenericName:         h.Config.GenericName,
+	}
+
+	// Return app context
+	c.JSON(200, appContext)
+}
+
+func (h *Handlers) UserHandler(c *gin.Context) {
+	log.Debug().Msg("Getting user context")
+
+	// Get user context
+	userContext := h.Hooks.UseUserContext(c)
+
+	// Create user context response
+	userContextResponse := types.UserContextResponse{
+		Status:      200,
+		IsLoggedIn:  userContext.IsLoggedIn,
+		Username:    userContext.Username,
+		Provider:    userContext.Provider,
+		Oauth:       userContext.OAuth,
+		TotpPending: userContext.TotpPending,
+	}
+
+	// If we are not logged in we set the status to 401 and add the WWW-Authenticate header else we set it to 200
+	if !userContext.IsLoggedIn {
+		log.Debug().Msg("Unauthorized")
+		c.Header("WWW-Authenticate", "Basic realm=\"tinyauth\"")
+		userContextResponse.Message = "Unauthorized"
+	} else {
+		log.Debug().Interface("userContext", userContext).Msg("Authenticated")
+		userContextResponse.Message = "Authenticated"
+	}
+
+	// Return user context
+	c.JSON(200, userContextResponse)
+}
+
+func (h *Handlers) OauthUrlHandler(c *gin.Context) {
+	// Create struct for OAuth request
+	var request types.OAuthRequest
+
+	// Bind URI
+	err := c.BindUri(&request)
+
+	// Handle error
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to bind URI")
+		c.JSON(400, gin.H{
+			"status":  400,
+			"message": "Bad Request",
+		})
+		return
+	}
+
+	log.Debug().Msg("Got OAuth request")
+
+	// Check if provider exists
+	provider := h.Providers.GetProvider(request.Provider)
+
+	// Provider does not exist
+	if provider == nil {
+		c.JSON(404, gin.H{
+			"status":  404,
+			"message": "Not Found",
+		})
+		return
+	}
+
+	log.Debug().Str("provider", request.Provider).Msg("Got provider")
+
+	// Get auth URL
+	authURL := provider.GetAuthURL()
+
+	log.Debug().Msg("Got auth URL")
+
+	// Get redirect URI
+	redirectURI := c.Query("redirect_uri")
+
+	// Set redirect cookie if redirect URI is provided
+	if redirectURI != "" {
+		log.Debug().Str("redirectURI", redirectURI).Msg("Setting redirect cookie")
+		c.SetCookie("tinyauth_redirect_uri", redirectURI, 3600, "/", h.Config.Domain, h.Config.CookieSecure, true)
+	}
+
+	// Tailscale does not have an auth url so we create a random code (does not need to be secure) to avoid caching and send it
+	if request.Provider == "tailscale" {
+		// Build tailscale query
+		tailscaleQuery, err := query.Values(types.TailscaleQuery{
+			Code: (1000 + rand.IntN(9000)),
+		})
+
+		// Handle error
+		if err != nil {
+			log.Error().Err(err).Msg("Failed to build query")
+			c.JSON(500, gin.H{
+				"status":  500,
+				"message": "Internal Server Error",
+			})
+			return
+		}
+
+		// Return tailscale URL (immidiately redirects to the callback)
+		c.JSON(200, gin.H{
+			"status":  200,
+			"message": "OK",
+			"url":     fmt.Sprintf("%s/api/oauth/callback/tailscale?%s", h.Config.AppURL, tailscaleQuery.Encode()),
+		})
+		return
+	}
+
+	// Return auth URL
+	c.JSON(200, gin.H{
+		"status":  200,
+		"message": "OK",
+		"url":     authURL,
+	})
+}
+
+func (h *Handlers) OauthCallbackHandler(c *gin.Context) {
+	// Create struct for OAuth request
+	var providerName types.OAuthRequest
+
+	// Bind URI
+	err := c.BindUri(&providerName)
+
+	// Handle error
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to bind URI")
+		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+		return
+	}
+
+	log.Debug().Interface("provider", providerName.Provider).Msg("Got provider name")
+
+	// Get code
+	code := c.Query("code")
+
+	// Code empty so redirect to error
+	if code == "" {
+		log.Error().Msg("No code provided")
+		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+		return
+	}
+
+	log.Debug().Msg("Got code")
+
+	// Get provider
+	provider := h.Providers.GetProvider(providerName.Provider)
+
+	log.Debug().Str("provider", providerName.Provider).Msg("Got provider")
+
+	// Provider does not exist
+	if provider == nil {
+		c.Redirect(http.StatusPermanentRedirect, "/not-found")
+		return
+	}
+
+	// Exchange token (authenticates user)
+	_, err = provider.ExchangeToken(code)
+
+	log.Debug().Msg("Got token")
+
+	// Handle error
+	if err != nil {
+		log.Error().Msg("Failed to exchange token")
+		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+		return
+	}
+
+	// Get email
+	email, err := h.Providers.GetUser(providerName.Provider)
+
+	log.Debug().Str("email", email).Msg("Got email")
+
+	// Handle error
+	if err != nil {
+		log.Error().Msg("Failed to get email")
+		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+		return
+	}
+
+	// Email is not whitelisted
+	if !h.Auth.EmailWhitelisted(email) {
+		log.Warn().Str("email", email).Msg("Email not whitelisted")
+
+		// Build query
+		unauthorizedQuery, err := query.Values(types.UnauthorizedQuery{
+			Username: email,
+		})
+
+		// Handle error
+		if err != nil {
+			log.Error().Msg("Failed to build query")
+			c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+			return
+		}
+
+		// Redirect to unauthorized
+		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/unauthorized?%s", h.Config.AppURL, unauthorizedQuery.Encode()))
+	}
+
+	log.Debug().Msg("Email whitelisted")
+
+	// Create session cookie
+	h.Auth.CreateSessionCookie(c, &types.SessionCookie{
+		Username: email,
+		Provider: providerName.Provider,
+	})
+
+	// Get redirect URI
+	redirectURI, redirectURIErr := c.Cookie("tinyauth_redirect_uri")
+
+	// If it is empty it means that no redirect_uri was provided to the login screen so we just log in
+	if redirectURIErr != nil {
+		c.Redirect(http.StatusPermanentRedirect, h.Config.AppURL)
+	}
+
+	log.Debug().Str("redirectURI", redirectURI).Msg("Got redirect URI")
+
+	// Clean up redirect cookie since we already have the value
+	c.SetCookie("tinyauth_redirect_uri", "", -1, "/", h.Config.Domain, h.Config.CookieSecure, true)
+
+	// Build query
+	redirectQuery, err := query.Values(types.LoginQuery{
+		RedirectURI: redirectURI,
+	})
+
+	log.Debug().Msg("Got redirect query")
+
+	// Handle error
+	if err != nil {
+		log.Error().Msg("Failed to build query")
+		c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/error", h.Config.AppURL))
+		return
+	}
+
+	// Redirect to continue with the redirect URI
+	c.Redirect(http.StatusPermanentRedirect, fmt.Sprintf("%s/continue?%s", h.Config.AppURL, redirectQuery.Encode()))
+}
+
+func (h *Handlers) HealthcheckHandler(c *gin.Context) {
+	c.JSON(200, gin.H{
+		"status":  200,
+		"message": "OK",
+	})
+}

internal/types/types.go

@@ -72,12 +72,9 @@ type APIConfig struct {
 	Port          int
 	Address       string
 	Secret        string
-	AppURL          string
 	CookieSecure  bool
 	SessionExpiry int
-	DisableContinue bool
+	Domain        string
-	GenericName     string
-	Title           string
 }
 
 // OAuthConfig is the configuration for the providers
@@ -164,3 +161,13 @@ type AppContext struct {
 type TotpRequest struct {
 	Code string `json:"code"`
 }
+
+// Server configuration
+type HandlersConfig struct {
+	AppURL          string
+	Domain          string
+	CookieSecure    bool
+	DisableContinue bool
+	GenericName     string
+	Title           string
+}

internal/utils/utils.go

@@ -46,14 +46,14 @@ func ParseUsers(users string) (types.Users, error) {
 	return usersParsed, nil
 }
 
-// Root url parses parses a hostname and returns the root domain (e.g. sub1.sub2.domain.com -> sub2.domain.com)
+// Get upper domain parses a hostname and returns the upper domain (e.g. sub1.sub2.domain.com -> sub2.domain.com)
-func GetRootURL(urlSrc string) (string, error) {
+func GetUpperDomain(urlSrc string) (string, error) {
 	// Make sure the url is valid
-	urlParsed, parseErr := url.Parse(urlSrc)
+	urlParsed, err := url.Parse(urlSrc)
 
 	// Check if there was an error
-	if parseErr != nil {
+	if err != nil {
-		return "", parseErr
+		return "", err
 	}
 
 	// Split the hostname by period

internal/utils/utils_test.go

@@ -38,15 +38,15 @@ func TestParseUsers(t *testing.T) {
 	}
 }
 
-// Test the get root url function
+// Test the get upper domain function
-func TestGetRootURL(t *testing.T) {
+func TestGetUpperDomain(t *testing.T) {
-	t.Log("Testing get root url with a valid url")
+	t.Log("Testing get upper domain with a valid url")
 
-	// Test the get root url function with a valid url
+	// Test the get upper domain function with a valid url
 	url := "https://sub1.sub2.domain.com:8080"
 	expected := "sub2.domain.com"
 
-	result, err := utils.GetRootURL(url)
+	result, err := utils.GetUpperDomain(url)
 
 	// Check if there was an error
 	if err != nil {