i18n: authorize page error messages

Makefile

@@ -18,6 +18,10 @@ deps:
 	bun install --cwd frontend
 	go mod download
 
+# Clean data
+clean-data:
+	rm -rf data/
+
 # Clean web UI build
 clean-webui:
 	rm -rf internal/assets/dist
@@ -57,11 +61,11 @@ test:
 
 # Development
 develop:
-	docker compose -f $(DEV_COMPOSE) up --force-recreate --pull=always --remove-orphans
+	docker compose -f $(DEV_COMPOSE) up --force-recreate --pull=always --remove-orphans --build
 
 # Development - Infisical
 develop-infisical:
-	infisical run --env=dev -- docker compose -f $(DEV_COMPOSE) up --force-recreate --pull=always --remove-orphans
+	infisical run --env=dev -- docker compose -f $(DEV_COMPOSE) up --force-recreate --pull=always --remove-orphans --build
 
 # Production
 prod:

frontend/src/lib/i18n/locales/en-US.json

@@ -51,12 +51,31 @@
     "forgotPasswordTitle": "Forgot your password?",
     "failedToFetchProvidersTitle": "Failed to load authentication providers. Please check your configuration.",
     "errorTitle": "An error occurred",
-    "errorSubtitle": "An error occurred while trying to perform this action. Please check the console for more information.",
+    "errorSubtitleInfo": "The following error occurred while processing your request:",
+    "errorSubtitle": "An error occurred while trying to perform this action. Please check your browser console or the app logs for more information.",
     "forgotPasswordMessage": "You can reset your password by changing the `USERS` environment variable.",
     "fieldRequired": "This field is required",
     "invalidInput": "Invalid input",
     "domainWarningTitle": "Invalid Domain",
     "domainWarningSubtitle": "This instance is configured to be accessed from <code>{{appUrl}}</code>, but <code>{{currentUrl}}</code> is being used. If you proceed, you may encounter issues with authentication.",
     "ignoreTitle": "Ignore",
-    "goToCorrectDomainTitle": "Go to correct domain"
-}
+    "goToCorrectDomainTitle": "Go to correct domain",
+    "authorizeTitle": "Authorize",
+    "authorizeCardTitle": "Continue to {{app}}?",
+    "authorizeSubtitle": "Would you like to continue to this app? Please carefully review the permissions requested by the app.",
+    "authorizeSubtitleOAuth": "Would you like to continue to this app?",
+    "authorizeLoadingTitle": "Loading...",
+    "authorizeLoadingSubtitle": "Please wait while we load the client information.",
+    "authorizeSuccessTitle": "Authorized",
+    "authorizeSuccessSubtitle": "You will be redirected to the app in a few seconds.",
+    "authorizeErrorClientInfo": "An error occurred while loading the client information. Please try again later.",
+    "authorizeErrorMissingParams": "The following parameters are missing: {{missingParams}}",
+    "openidScopeName": "OpenID Connect",
+    "openidScopeDescription": "Allows the app to access your OpenID Connect information.",
+    "emailScopeName": "Email",
+    "emailScopeDescription": "Allows the app to access your email address.",
+    "profileScopeName": "Profile",
+    "profileScopeDescription": "Allows the app to access your profile information.",
+    "groupsScopeName": "Groups",
+    "groupsScopeDescription": "Allows the app to access your group information."
+}

frontend/src/lib/i18n/locales/en.json

@@ -51,12 +51,31 @@
     "forgotPasswordTitle": "Forgot your password?",
     "failedToFetchProvidersTitle": "Failed to load authentication providers. Please check your configuration.",
     "errorTitle": "An error occurred",
-    "errorSubtitle": "An error occurred while trying to perform this action. Please check the console for more information.",
+    "errorSubtitleInfo": "The following error occurred while processing your request:",
+    "errorSubtitle": "An error occurred while trying to perform this action. Please check your browser console or the app logs for more information.",
     "forgotPasswordMessage": "You can reset your password by changing the `USERS` environment variable.",
     "fieldRequired": "This field is required",
     "invalidInput": "Invalid input",
     "domainWarningTitle": "Invalid Domain",
     "domainWarningSubtitle": "This instance is configured to be accessed from <code>{{appUrl}}</code>, but <code>{{currentUrl}}</code> is being used. If you proceed, you may encounter issues with authentication.",
     "ignoreTitle": "Ignore",
-    "goToCorrectDomainTitle": "Go to correct domain"
-}
+    "goToCorrectDomainTitle": "Go to correct domain",
+    "authorizeTitle": "Authorize",
+    "authorizeCardTitle": "Continue to {{app}}?",
+    "authorizeSubtitle": "Would you like to continue to this app? Please carefully review the permissions requested by the app.",
+    "authorizeSubtitleOAuth": "Would you like to continue to this app?",
+    "authorizeLoadingTitle": "Loading...",
+    "authorizeLoadingSubtitle": "Please wait while we load the client information.",
+    "authorizeSuccessTitle": "Authorized",
+    "authorizeSuccessSubtitle": "You will be redirected to the app in a few seconds.",
+    "authorizeErrorClientInfo": "An error occurred while loading the client information. Please try again later.",
+    "authorizeErrorMissingParams": "The following parameters are missing: {{missingParams}}",
+    "openidScopeName": "OpenID Connect",
+    "openidScopeDescription": "Allows the app to access your OpenID Connect information.",
+    "emailScopeName": "Email",
+    "emailScopeDescription": "Allows the app to access your email address.",
+    "profileScopeName": "Profile",
+    "profileScopeDescription": "Allows the app to access your profile information.",
+    "groupsScopeName": "Groups",
+    "groupsScopeDescription": "Allows the app to access your group information."
+}

frontend/src/pages/authorize-page.tsx

@@ -8,32 +8,81 @@ import {
   CardTitle,
   CardDescription,
   CardFooter,
+  CardContent,
 } from "@/components/ui/card";
-import { getOidcClientInfoScehma } from "@/schemas/oidc-schemas";
+import { getOidcClientInfoSchema } from "@/schemas/oidc-schemas";
 import { Button } from "@/components/ui/button";
 import axios from "axios";
 import { toast } from "sonner";
 import { useOIDCParams } from "@/lib/hooks/oidc";
+import { useTranslation } from "react-i18next";
+import { TFunction } from "i18next";
+import { Mail, Shield, User, Users } from "lucide-react";
+
+type Scope = {
+  id: string;
+  name: string;
+  description: string;
+  icon: React.ReactNode;
+};
+
+const scopeMapIconProps = {
+  className: "stroke-card stroke-2.5",
+};
+
+const createScopeMap = (t: TFunction<"translation", undefined>): Scope[] => {
+  return [
+    {
+      id: "openid",
+      name: t("openidScopeName"),
+      description: t("openidScopeDescription"),
+      icon: <Shield {...scopeMapIconProps} />,
+    },
+    {
+      id: "email",
+      name: t("emailScopeName"),
+      description: t("emailScopeDescription"),
+      icon: <Mail {...scopeMapIconProps} />,
+    },
+    {
+      id: "profile",
+      name: t("profileScopeName"),
+      description: t("profileScopeDescription"),
+      icon: <User {...scopeMapIconProps} />,
+    },
+    {
+      id: "groups",
+      name: t("groupsScopeName"),
+      description: t("groupsScopeDescription"),
+      icon: <Users {...scopeMapIconProps} />,
+    },
+  ];
+};
 
 export const AuthorizePage = () => {
   const { isLoggedIn } = useUserContext();
   const { search } = useLocation();
+  const { t } = useTranslation();
   const navigate = useNavigate();
+  const scopeMap = createScopeMap(t);
 
   const searchParams = new URLSearchParams(search);
   const {
     values: props,
     missingParams,
+    isOidc,
     compiled: compiledOIDCParams,
   } = useOIDCParams(searchParams);
+  const scopes = props.scope ? props.scope.split(" ").filter(Boolean) : [];
 
   const getClientInfo = useQuery({
     queryKey: ["client", props.client_id],
     queryFn: async () => {
       const res = await fetch(`/api/oidc/clients/${props.client_id}`);
-      const data = await getOidcClientInfoScehma.parseAsync(await res.json());
+      const data = await getOidcClientInfoSchema.parseAsync(await res.json());
       return data;
     },
+    enabled: isOidc,
   });
 
   const authorizeMutation = useMutation({
@@ -48,8 +97,8 @@ export const AuthorizePage = () => {
     },
     mutationKey: ["authorize", props.client_id],
     onSuccess: (data) => {
-      toast.info("Authorized", {
-        description: "You will be soon redirected to your application",
+      toast.info(t("authorizeSuccessTitle"), {
+        description: t("authorizeSuccessSubtitle"),
       });
       window.location.replace(data.data.redirect_uri);
     },
@@ -60,27 +109,27 @@ export const AuthorizePage = () => {
     },
   });
 
-  if (!isLoggedIn) {
-    return <Navigate to={`/login?${compiledOIDCParams}`} replace />;
-  }
-
   if (missingParams.length > 0) {
     return (
       <Navigate
-        to={`/error?error=${encodeURIComponent(`Missing parameters: ${missingParams.join(", ")}`)}`}
+        to={`/error?error=${encodeURIComponent(t("authorizeErrorMissingParams", { missingParams: missingParams.join(", ") }))}`}
         replace
       />
     );
   }
 
+  if (!isLoggedIn) {
+    return <Navigate to={`/login?${compiledOIDCParams}`} replace />;
+  }
+
   if (getClientInfo.isLoading) {
     return (
       <Card className="min-w-xs sm:min-w-sm">
         <CardHeader>
-          <CardTitle className="text-3xl">Loading...</CardTitle>
-          <CardDescription>
-            Please wait while we load the client information.
-          </CardDescription>
+          <CardTitle className="text-3xl">
+            {t("authorizeLoadingTitle")}
+          </CardTitle>
+          <CardDescription>{t("authorizeLoadingSubtitle")}</CardDescription>
         </CardHeader>
       </Card>
     );
@@ -89,36 +138,60 @@ export const AuthorizePage = () => {
   if (getClientInfo.isError) {
     return (
       <Navigate
-        to={`/error?error=${encodeURIComponent(`Failed to load client information`)}`}
+        to={`/error?error=${encodeURIComponent(t("authorizeErrorClientInfo"))}`}
         replace
       />
     );
   }
 
   return (
-    <Card className="min-w-xs sm:min-w-sm">
+    <Card className="min-w-xs sm:min-w-sm mx-4">
       <CardHeader>
         <CardTitle className="text-3xl">
-          Continue to {getClientInfo.data?.name || "Unknown"}?
+          {t("authorizeCardTitle", {
+            app: getClientInfo.data?.name || "Unknown",
+          })}
         </CardTitle>
         <CardDescription>
-          Would you like to continue to this app? Please keep in mind that this
-          app will have access to your email and other information.
+          {scopes.includes("openid")
+            ? t("authorizeSubtitle")
+            : t("authorizeSubtitleOAuth")}
         </CardDescription>
       </CardHeader>
+      {scopes.includes("openid") && (
+        <CardContent className="flex flex-col gap-4">
+          {scopes.map((id) => {
+            const scope = scopeMap.find((s) => s.id === id);
+            if (!scope) return null;
+            return (
+              <div key={scope.id} className="flex flex-row items-center gap-3">
+                <div className="p-2 flex flex-col items-center justify-center bg-card-foreground rounded-md">
+                  {scope.icon}
+                </div>
+                <div className="flex flex-col gap-0.5">
+                  <div className="text-md">{scope.name}</div>
+                  <div className="text-sm text-muted-foreground">
+                    {scope.description}
+                  </div>
+                </div>
+              </div>
+            );
+          })}
+        </CardContent>
+      )}
       <CardFooter className="flex flex-col items-stretch gap-2">
         <Button
           onClick={() => authorizeMutation.mutate()}
           loading={authorizeMutation.isPending}
         >
-          Authorize
+          {t("authorizeTitle")}
         </Button>
         <Button
           onClick={() => navigate("/")}
           disabled={authorizeMutation.isPending}
           variant="outline"
         >
-          Cancel
+          {t("cancelTitle")}
         </Button>
       </CardFooter>
     </Card>

frontend/src/pages/error-page.tsx

@@ -20,7 +20,7 @@ export const ErrorPage = () => {
         <CardDescription className="flex flex-col gap-1.5">
           {error ? (
             <>
-              <p>The following error occured while processing your request:</p>
+              <p>{t("errorSubtitleInfo")}</p>
               <pre>{error}</pre>
             </>
           ) : (

frontend/src/pages/login-page.tsx

@@ -90,7 +90,9 @@ export const LoginPage = () => {
     mutationKey: ["login"],
     onSuccess: (data) => {
       if (data.data.totpPending) {
-        window.location.replace(`/totp?${compiledOIDCParams}`);
+        window.location.replace(
+          `/totp?redirect_uri=${encodeURIComponent(props.redirect_uri)}`,
+        );
         return;
       }
 
@@ -149,6 +151,10 @@ export const LoginPage = () => {
     [],
   );
 
+  if (isLoggedIn && isOidc) {
+    return <Navigate to={`/authorize?${compiledOIDCParams}`} replace />;
+  }
+
   if (isLoggedIn && props.redirect_uri !== "") {
     return (
       <Navigate

frontend/src/schemas/oidc-schemas.ts

@@ -1,5 +1,5 @@
 import { z } from "zod";
 
-export const getOidcClientInfoScehma = z.object({
+export const getOidcClientInfoSchema = z.object({
   name: z.string(),
 });

frontend/vite.config.ts

@@ -24,6 +24,11 @@ export default defineConfig({
         changeOrigin: true,
         rewrite: (path) => path.replace(/^\/resources/, ""),
       },
+      "/.well-known": {
+        target: "http://tinyauth-backend:3000/.well-known",
+        changeOrigin: true,
+        rewrite: (path) => path.replace(/^\/\.well-known/, ""),
+      },
     },
     allowedHosts: true,
   },

go.mod

@@ -61,6 +61,7 @@ require (
 	github.com/gabriel-vasile/mimetype v1.4.10 // indirect
 	github.com/gin-contrib/sse v1.1.0 // indirect
 	github.com/go-asn1-ber/asn1-ber v1.5.8-0.20250403174932-29230038a667 // indirect
+	github.com/go-jose/go-jose/v4 v4.1.3 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/go-playground/locales v0.14.1 // indirect

go.sum

@@ -103,6 +103,8 @@ github.com/gin-gonic/gin v1.11.0 h1:OW/6PLjyusp2PPXtyxKHU0RbX6I/l28FTdDlae5ueWk=
 github.com/gin-gonic/gin v1.11.0/go.mod h1:+iq/FyxlGzII0KHiBGjuNn4UNENUlKbGlNmc+W50Dls=
 github.com/go-asn1-ber/asn1-ber v1.5.8-0.20250403174932-29230038a667 h1:BP4M0CvQ4S3TGls2FvczZtj5Re/2ZzkV9VwqPHH/3Bo=
 github.com/go-asn1-ber/asn1-ber v1.5.8-0.20250403174932-29230038a667/go.mod h1:hEBeB/ic+5LoWskz+yKT7vGhhPYkProFKoKdwZRWMe0=
+github.com/go-jose/go-jose/v4 v4.1.3 h1:CVLmWDhDVRa6Mi/IgCgaopNosCaHz7zrMeF9MlZRkrs=
+github.com/go-jose/go-jose/v4 v4.1.3/go.mod h1:x4oUasVrzR7071A4TnHLGSPpNOm2a21K9Kf04k1rs08=
 github.com/go-ldap/ldap/v3 v3.4.12 h1:1b81mv7MagXZ7+1r7cLTWmyuTqVqdwbtJSjC0DAp9s4=
 github.com/go-ldap/ldap/v3 v3.4.12/go.mod h1:+SPAGcTtOfmGsCb3h1RFiq4xpp4N636G75OEace8lNo=
 github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=

internal/assets/migrations/000005_oidc_session.up.sql

@@ -1,6 +1,6 @@
 CREATE TABLE IF NOT EXISTS "oidc_codes" (
     "sub" TEXT NOT NULL UNIQUE,
-    "code" TEXT NOT NULL PRIMARY KEY UNIQUE,
+    "code_hash" TEXT NOT NULL PRIMARY KEY UNIQUE,
     "scope" TEXT NOT NULL,
     "redirect_uri" TEXT NOT NULL,
     "client_id" TEXT NOT NULL,
@@ -9,10 +9,12 @@ CREATE TABLE IF NOT EXISTS "oidc_codes" (
 
 CREATE TABLE IF NOT EXISTS "oidc_tokens" (
     "sub" TEXT NOT NULL UNIQUE,
-    "access_token" TEXT NOT NULL PRIMARY KEY UNIQUE,
+    "access_token_hash" TEXT NOT NULL PRIMARY KEY UNIQUE,
+    "refresh_token_hash" TEXT NOT NULL,
     "scope" TEXT NOT NULL,
     "client_id" TEXT NOT NULL,
-    "expires_at" INTEGER NOT NULL
+    "token_expires_at" INTEGER NOT NULL,
+    "refresh_token_expires_at" INTEGER NOT NULL
 );
 
 CREATE TABLE IF NOT EXISTS "oidc_userinfo" (

internal/bootstrap/app_bootstrap.go

@@ -247,7 +247,7 @@ func (app *BootstrapApp) heartbeat() {
 
 	heartbeatURL := config.ApiServer + "/v1/instances/heartbeat"
 
-	for ; true; <-ticker.C {
+	for range ticker.C {
 		tlog.App.Debug().Msg("Sending heartbeat")
 
 		req, err := http.NewRequest(http.MethodPost, heartbeatURL, bytes.NewReader(bodyJson))
@@ -279,7 +279,7 @@ func (app *BootstrapApp) dbCleanup(queries *repository.Queries) {
 	defer ticker.Stop()
 	ctx := context.Background()
 
-	for ; true; <-ticker.C {
+	for range ticker.C {
 		tlog.App.Debug().Msg("Cleaning up old database sessions")
 		err := queries.DeleteExpiredSessions(ctx, time.Now().Unix())
 		if err != nil {

internal/bootstrap/router_bootstrap.go

@@ -113,5 +113,9 @@ func (app *BootstrapApp) setupRouter() (*gin.Engine, error) {
 
 	healthController.SetupRoutes()
 
+	wellknownController := controller.NewWellKnownController(controller.WellKnownControllerConfig{}, app.services.oidcService, engine)
+
+	wellknownController.SetupRoutes()
+
 	return engine, nil
 }

internal/bootstrap/service_bootstrap.go

@@ -94,6 +94,7 @@ func (app *BootstrapApp) initServices(queries *repository.Queries) (Services, er
 		PrivateKeyPath: app.config.OIDC.PrivateKeyPath,
 		PublicKeyPath:  app.config.OIDC.PublicKeyPath,
 		Issuer:         app.config.AppURL,
+		SessionExpiry:  app.config.Auth.SessionExpiry,
 	}, queries)
 
 	err = oidcService.Init()

internal/controller/context_controller_test.go

@@ -13,7 +13,7 @@ import (
 	"gotest.tools/v3/assert"
 )
 
-var controllerCfg = controller.ContextControllerConfig{
+var contextControllerCfg = controller.ContextControllerConfig{
 	Providers: []controller.Provider{
 		{
 			Name:  "Local",
@@ -35,7 +35,7 @@ var controllerCfg = controller.ContextControllerConfig{
 	DisableUIWarnings:     false,
 }
 
-var userContext = config.UserContext{
+var contextCtrlTestContext = config.UserContext{
 	Username:    "testuser",
 	Name:        "testuser",
 	Email:       "test@example.com",
@@ -65,7 +65,7 @@ func setupContextController(middlewares *[]gin.HandlerFunc) (*gin.Engine, *httpt
 
 	group := router.Group("/api")
 
-	ctrl := controller.NewContextController(controllerCfg, group)
+	ctrl := controller.NewContextController(contextControllerCfg, group)
 	ctrl.SetupRoutes()
 
 	return router, recorder
@@ -75,14 +75,14 @@ func TestAppContextHandler(t *testing.T) {
 	expectedRes := controller.AppContextResponse{
 		Status:                200,
 		Message:               "Success",
-		Providers:             controllerCfg.Providers,
-		Title:                 controllerCfg.Title,
-		AppURL:                controllerCfg.AppURL,
-		CookieDomain:          controllerCfg.CookieDomain,
-		ForgotPasswordMessage: controllerCfg.ForgotPasswordMessage,
-		BackgroundImage:       controllerCfg.BackgroundImage,
-		OAuthAutoRedirect:     controllerCfg.OAuthAutoRedirect,
-		DisableUIWarnings:     controllerCfg.DisableUIWarnings,
+		Providers:             contextControllerCfg.Providers,
+		Title:                 contextControllerCfg.Title,
+		AppURL:                contextControllerCfg.AppURL,
+		CookieDomain:          contextControllerCfg.CookieDomain,
+		ForgotPasswordMessage: contextControllerCfg.ForgotPasswordMessage,
+		BackgroundImage:       contextControllerCfg.BackgroundImage,
+		OAuthAutoRedirect:     contextControllerCfg.OAuthAutoRedirect,
+		DisableUIWarnings:     contextControllerCfg.DisableUIWarnings,
 	}
 
 	router, recorder := setupContextController(nil)
@@ -103,20 +103,20 @@ func TestUserContextHandler(t *testing.T) {
 	expectedRes := controller.UserContextResponse{
 		Status:      200,
 		Message:     "Success",
-		IsLoggedIn:  userContext.IsLoggedIn,
-		Username:    userContext.Username,
-		Name:        userContext.Name,
-		Email:       userContext.Email,
-		Provider:    userContext.Provider,
-		OAuth:       userContext.OAuth,
-		TotpPending: userContext.TotpPending,
-		OAuthName:   userContext.OAuthName,
+		IsLoggedIn:  contextCtrlTestContext.IsLoggedIn,
+		Username:    contextCtrlTestContext.Username,
+		Name:        contextCtrlTestContext.Name,
+		Email:       contextCtrlTestContext.Email,
+		Provider:    contextCtrlTestContext.Provider,
+		OAuth:       contextCtrlTestContext.OAuth,
+		TotpPending: contextCtrlTestContext.TotpPending,
+		OAuthName:   contextCtrlTestContext.OAuthName,
 	}
 
 	// Test with context
 	router, recorder := setupContextController(&[]gin.HandlerFunc{
 		func(c *gin.Context) {
-			c.Set("context", &userContext)
+			c.Set("context", &contextCtrlTestContext)
 			c.Next()
 		},
 	})

internal/controller/oidc_controller.go

@@ -29,9 +29,10 @@ type AuthorizeCallback struct {
 }
 
 type TokenRequest struct {
-	GrantType   string `form:"grant_type" binding:"required"`
-	Code        string `form:"code" binding:"required"`
-	RedirectURI string `form:"redirect_uri" binding:"required"`
+	GrantType    string `form:"grant_type" binding:"required" url:"grant_type"`
+	Code         string `form:"code" url:"code"`
+	RedirectURI  string `form:"redirect_uri" url:"redirect_uri"`
+	RefreshToken string `form:"refresh_token" url:"refresh_token"`
 }
 
 type CallbackError struct {
@@ -111,7 +112,7 @@ func (controller *OIDCController) Authorize(c *gin.Context) {
 		return
 	}
 
-	_, ok := controller.oidc.GetClient(req.ClientID)
+	client, ok := controller.oidc.GetClient(req.ClientID)
 
 	if !ok {
 		controller.authorizeError(c, err, "Client not found", "The client ID is invalid", "", "", "")
@@ -130,10 +131,17 @@ func (controller *OIDCController) Authorize(c *gin.Context) {
 		return
 	}
 
-	// WARNING: Since Tinyauth is stateless, we cannot have a sub that never changes. We will just create a uuid out of the username which remains stable, but if username changes then sub changes too.
-	sub := utils.GenerateUUID(userContext.Username)
+	// WARNING: Since Tinyauth is stateless, we cannot have a sub that never changes. We will just create a uuid out of the username and client name which remains stable, but if username or client name changes then sub changes too.
+	sub := utils.GenerateUUID(fmt.Sprintf("%s:%s", userContext.Username, client.ID))
 	code := rand.Text()
 
+	// Before storing the code, delete old session
+	err = controller.oidc.DeleteOldSession(c, sub)
+	if err != nil {
+		controller.authorizeError(c, err, "Failed to delete old sessions", "Failed to delete old sessions", req.RedirectURI, "server_error", req.State)
+		return
+	}
+
 	err = controller.oidc.StoreCode(c, sub, code, req)
 
 	if err != nil {
@@ -141,13 +149,15 @@ func (controller *OIDCController) Authorize(c *gin.Context) {
 		return
 	}
 
-	// We also need a snapshot of the user that authorized this
-	err = controller.oidc.StoreUserinfo(c, sub, userContext, req)
+	// We also need a snapshot of the user that authorized this (skip if no openid scope)
+	if slices.Contains(strings.Fields(req.Scope), "openid") {
+		err = controller.oidc.StoreUserinfo(c, sub, userContext, req)
 
-	if err != nil {
-		tlog.App.Error().Err(err).Msg("Failed to insert user info into database")
-		controller.authorizeError(c, err, "Failed to store user info", "Failed to store user info", req.RedirectURI, "server_error", req.State)
-		return
+		if err != nil {
+			tlog.App.Error().Err(err).Msg("Failed to insert user info into database")
+			controller.authorizeError(c, err, "Failed to store user info", "Failed to store user info", req.RedirectURI, "server_error", req.State)
+			return
+		}
 	}
 
 	queries, err := query.Values(AuthorizeCallback{
@@ -167,34 +177,6 @@ func (controller *OIDCController) Authorize(c *gin.Context) {
 }
 
 func (controller *OIDCController) Token(c *gin.Context) {
-	rclientId, rclientSecret, ok := c.Request.BasicAuth()
-
-	if !ok {
-		tlog.App.Error().Msg("Missing authorization header")
-		c.JSON(400, gin.H{
-			"error": "invalid_request",
-		})
-		return
-	}
-
-	client, ok := controller.oidc.GetClient(rclientId)
-
-	if !ok {
-		tlog.App.Warn().Str("client_id", rclientId).Msg("Client not found")
-		c.JSON(400, gin.H{
-			"error": "access_denied",
-		})
-		return
-	}
-
-	if client.ClientSecret != rclientSecret {
-		tlog.App.Warn().Str("client_id", rclientId).Msg("Invalid client secret")
-		c.JSON(400, gin.H{
-			"error": "access_denied",
-		})
-		return
-	}
-
 	var req TokenRequest
 
 	err := c.Bind(&req)
@@ -215,58 +197,112 @@ func (controller *OIDCController) Token(c *gin.Context) {
 		return
 	}
 
-	entry, err := controller.oidc.GetCodeEntry(c, req.Code)
-	if err != nil {
-		if errors.Is(err, service.ErrCodeExpired) {
-			tlog.App.Warn().Str("code", req.Code).Msg("Code expired")
+	rclientId, rclientSecret, ok := c.Request.BasicAuth()
+
+	if !ok {
+		tlog.App.Error().Msg("Missing authorization header")
+		c.Header("www-authenticate", "basic")
+		c.JSON(401, gin.H{
+			"error": "invalid_client",
+		})
+		return
+	}
+
+	client, ok := controller.oidc.GetClient(rclientId)
+
+	if !ok {
+		tlog.App.Warn().Str("client_id", rclientId).Msg("Client not found")
+		c.JSON(400, gin.H{
+			"error": "invalid_client",
+		})
+		return
+	}
+
+	if client.ClientSecret != rclientSecret {
+		tlog.App.Warn().Str("client_id", rclientId).Msg("Invalid client secret")
+		c.JSON(400, gin.H{
+			"error": "invalid_client",
+		})
+		return
+	}
+
+	var tokenResponse service.TokenResponse
+
+	switch req.GrantType {
+	case "authorization_code":
+		entry, err := controller.oidc.GetCodeEntry(c, controller.oidc.Hash(req.Code))
+		if err != nil {
+			if errors.Is(err, service.ErrCodeNotFound) {
+				tlog.App.Warn().Msg("Code not found")
+				c.JSON(400, gin.H{
+					"error": "invalid_grant",
+				})
+				return
+			}
+			if errors.Is(err, service.ErrCodeExpired) {
+				tlog.App.Warn().Msg("Code expired")
+				c.JSON(400, gin.H{
+					"error": "invalid_grant",
+				})
+				return
+			}
+			tlog.App.Warn().Err(err).Msg("Failed to get OIDC code entry")
 			c.JSON(400, gin.H{
-				"error": "access_denied",
+				"error": "server_error",
 			})
 			return
 		}
-		if errors.Is(err, service.ErrCodeNotFound) {
-			tlog.App.Warn().Str("code", req.Code).Msg("Code not found")
+
+		if entry.RedirectURI != req.RedirectURI {
+			tlog.App.Warn().Str("redirect_uri", req.RedirectURI).Msg("Redirect URI mismatch")
 			c.JSON(400, gin.H{
-				"error": "access_denied",
+				"error": "invalid_grant",
 			})
 			return
 		}
-		tlog.App.Warn().Err(err).Msg("Failed to get OIDC code entry")
-		c.JSON(400, gin.H{
-			"error": "server_error",
-		})
-		return
+
+		tokenRes, err := controller.oidc.GenerateAccessToken(c, client, entry.Sub, entry.Scope)
+
+		if err != nil {
+			tlog.App.Error().Err(err).Msg("Failed to generate access token")
+			c.JSON(400, gin.H{
+				"error": "server_error",
+			})
+			return
+		}
+
+		tokenResponse = tokenRes
+	case "refresh_token":
+		tokenRes, err := controller.oidc.RefreshAccessToken(c, req.RefreshToken, rclientId)
+
+		if err != nil {
+			if errors.Is(err, service.ErrTokenExpired) {
+				tlog.App.Error().Err(err).Msg("Refresh token expired")
+				c.JSON(401, gin.H{
+					"error": "invalid_grant",
+				})
+				return
+			}
+
+			if errors.Is(err, service.ErrInvalidClient) {
+				tlog.App.Error().Err(err).Msg("Invalid client")
+				c.JSON(401, gin.H{
+					"error": "invalid_grant",
+				})
+				return
+			}
+
+			tlog.App.Error().Err(err).Msg("Failed to refresh access token")
+			c.JSON(400, gin.H{
+				"error": "server_error",
+			})
+			return
+		}
+
+		tokenResponse = tokenRes
 	}
 
-	if entry.RedirectURI != req.RedirectURI {
-		tlog.App.Warn().Str("redirect_uri", req.RedirectURI).Msg("Redirect URI mismatch")
-		c.JSON(400, gin.H{
-			"error": "invalid_request_uri",
-		})
-		return
-	}
-
-	accessToken, err := controller.oidc.GenerateAccessToken(c, client, entry.Sub, entry.Scope)
-
-	if err != nil {
-		tlog.App.Error().Err(err).Msg("Failed to generate access token")
-		c.JSON(400, gin.H{
-			"error": "server_error",
-		})
-		return
-	}
-
-	err = controller.oidc.DeleteCodeEntry(c, entry.Code)
-
-	if err != nil {
-		tlog.App.Error().Err(err).Msg("Failed to delete code in database")
-		c.JSON(400, gin.H{
-			"error": "server_error",
-		})
-		return
-	}
-
-	c.JSON(200, accessToken)
+	c.JSON(200, tokenResponse)
 }
 
 func (controller *OIDCController) Userinfo(c *gin.Context) {
@@ -277,7 +313,7 @@ func (controller *OIDCController) Userinfo(c *gin.Context) {
 	if !ok {
 		tlog.App.Warn().Msg("OIDC userinfo accessed without authorization header")
 		c.JSON(401, gin.H{
-			"error": "invalid_request",
+			"error": "invalid_grant",
 		})
 		return
 	}
@@ -285,18 +321,18 @@ func (controller *OIDCController) Userinfo(c *gin.Context) {
 	if strings.ToLower(tokenType) != "bearer" {
 		tlog.App.Warn().Msg("OIDC userinfo accessed with invalid token type")
 		c.JSON(401, gin.H{
-			"error": "invalid_request",
+			"error": "invalid_grant",
 		})
 		return
 	}
 
-	entry, err := controller.oidc.GetAccessToken(c, token)
+	entry, err := controller.oidc.GetAccessToken(c, controller.oidc.Hash(token))
 
 	if err != nil {
 		if err == service.ErrTokenNotFound {
 			tlog.App.Warn().Msg("OIDC userinfo accessed with invalid token")
 			c.JSON(401, gin.H{
-				"error": "invalid_request",
+				"error": "invalid_grant",
 			})
 			return
 		}
@@ -308,6 +344,15 @@ func (controller *OIDCController) Userinfo(c *gin.Context) {
 		return
 	}
 
+	// If we don't have the openid scope, return an error
+	if !slices.Contains(strings.Split(entry.Scope, ","), "openid") {
+		tlog.App.Warn().Msg("OIDC userinfo accessed without openid scope")
+		c.JSON(401, gin.H{
+			"error": "invalid_scope",
+		})
+		return
+	}
+
 	user, err := controller.oidc.GetUserinfo(c, entry.Sub)
 
 	if err != nil {
@@ -318,15 +363,6 @@ func (controller *OIDCController) Userinfo(c *gin.Context) {
 		return
 	}
 
-	// If we don't have the openid scope, return an error
-	if !slices.Contains(strings.Split(entry.Scope, ","), "openid") {
-		tlog.App.Warn().Msg("OIDC userinfo accessed without openid scope")
-		c.JSON(401, gin.H{
-			"error": "invalid_request",
-		})
-		return
-	}
-
 	c.JSON(200, controller.oidc.CompileUserinfo(user, entry.Scope))
 }
 
@@ -355,7 +391,7 @@ func (controller *OIDCController) authorizeError(c *gin.Context, err error, reas
 
 		c.JSON(200, gin.H{
 			"status":       200,
-			"redirect_uri": fmt.Sprintf("%s/?%s", callback, queries.Encode()),
+			"redirect_uri": fmt.Sprintf("%s?%s", callback, queries.Encode()),
 		})
 		return
 	}

internal/controller/oidc_controller_test.go

@@ -0,0 +1,281 @@
+package controller_test
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/go-querystring/query"
+	"github.com/steveiliop56/tinyauth/internal/bootstrap"
+	"github.com/steveiliop56/tinyauth/internal/config"
+	"github.com/steveiliop56/tinyauth/internal/controller"
+	"github.com/steveiliop56/tinyauth/internal/repository"
+	"github.com/steveiliop56/tinyauth/internal/service"
+	"github.com/steveiliop56/tinyauth/internal/utils/tlog"
+	"gotest.tools/v3/assert"
+)
+
+var oidcServiceConfig = service.OIDCServiceConfig{
+	Clients: map[string]config.OIDCClientConfig{
+		"client1": {
+			ClientID:         "some-client-id",
+			ClientSecret:     "some-client-secret",
+			ClientSecretFile: "",
+			TrustedRedirectURIs: []string{
+				"https://example.com/oauth/callback",
+			},
+			Name: "Client 1",
+		},
+	},
+	PrivateKeyPath: "/tmp/tinyauth_oidc_key",
+	PublicKeyPath:  "/tmp/tinyauth_oidc_key.pub",
+	Issuer:         "https://example.com",
+	SessionExpiry:  3600,
+}
+
+var oidcCtrlTestContext = config.UserContext{
+	Username:    "test",
+	Name:        "Test",
+	Email:       "test@example.com",
+	IsLoggedIn:  true,
+	IsBasicAuth: false,
+	OAuth:       false,
+	Provider:    "ldap", // ldap in order to test the groups
+	TotpPending: false,
+	OAuthGroups: "",
+	TotpEnabled: false,
+	OAuthName:   "",
+	OAuthSub:    "",
+	LdapGroups:  "test1,test2",
+}
+
+// Test is not amazing, but it will confirm the OIDC server works
+func TestOIDCController(t *testing.T) {
+	tlog.NewSimpleLogger().Init()
+
+	// Create an app instance
+	app := bootstrap.NewBootstrapApp(config.Config{})
+
+	// Get db
+	db, err := app.SetupDatabase("/tmp/tinyauth.db")
+	assert.NilError(t, err)
+
+	// Create queries
+	queries := repository.New(db)
+
+	// Create a new OIDC Servicee
+	oidcService := service.NewOIDCService(oidcServiceConfig, queries)
+	err = oidcService.Init()
+	assert.NilError(t, err)
+
+	// Create test router
+	gin.SetMode(gin.TestMode)
+	router := gin.Default()
+
+	router.Use(func(c *gin.Context) {
+		c.Set("context", &oidcCtrlTestContext)
+		c.Next()
+	})
+
+	group := router.Group("/api")
+
+	// Register oidc controller
+	oidcController := controller.NewOIDCController(controller.OIDCControllerConfig{}, oidcService, group)
+	oidcController.SetupRoutes()
+
+	// Get redirect URL test
+	recorder := httptest.NewRecorder()
+
+	marshalled, err := json.Marshal(service.AuthorizeRequest{
+		Scope:        "openid profile email groups",
+		ResponseType: "code",
+		ClientID:     "some-client-id",
+		RedirectURI:  "https://example.com/oauth/callback",
+		State:        "some-state",
+	})
+
+	assert.NilError(t, err)
+
+	req, err := http.NewRequest("POST", "/api/oidc/authorize", strings.NewReader(string(marshalled)))
+	assert.NilError(t, err)
+
+	router.ServeHTTP(recorder, req)
+	assert.Equal(t, http.StatusOK, recorder.Code)
+
+	resJson := map[string]any{}
+
+	err = json.Unmarshal(recorder.Body.Bytes(), &resJson)
+	assert.NilError(t, err)
+
+	redirect_uri, ok := resJson["redirect_uri"].(string)
+	assert.Assert(t, ok)
+
+	u, err := url.Parse(redirect_uri)
+	assert.NilError(t, err)
+
+	m, err := url.ParseQuery(u.RawQuery)
+	assert.NilError(t, err)
+	assert.Equal(t, m["state"][0], "some-state")
+
+	code := m["code"][0]
+
+	// Exchange code for token
+	recorder = httptest.NewRecorder()
+
+	params, err := query.Values(controller.TokenRequest{
+		GrantType:   "authorization_code",
+		Code:        code,
+		RedirectURI: "https://example.com/oauth/callback",
+	})
+
+	assert.NilError(t, err)
+
+	req, err = http.NewRequest("POST", "/api/oidc/token", strings.NewReader(params.Encode()))
+
+	assert.NilError(t, err)
+
+	req.Header.Set("content-type", "application/x-www-form-urlencoded")
+	req.SetBasicAuth("some-client-id", "some-client-secret")
+
+	router.ServeHTTP(recorder, req)
+	assert.Equal(t, http.StatusOK, recorder.Code)
+
+	resJson = map[string]any{}
+
+	err = json.Unmarshal(recorder.Body.Bytes(), &resJson)
+	assert.NilError(t, err)
+
+	accessToken, ok := resJson["access_token"].(string)
+	assert.Assert(t, ok)
+
+	_, ok = resJson["id_token"].(string)
+	assert.Assert(t, ok)
+
+	refreshToken, ok := resJson["refresh_token"].(string)
+	assert.Assert(t, ok)
+
+	expires_in, ok := resJson["expires_in"].(float64)
+	assert.Assert(t, ok)
+	assert.Equal(t, expires_in, float64(oidcServiceConfig.SessionExpiry))
+
+	// Ensure code is expired
+	recorder = httptest.NewRecorder()
+
+	params, err = query.Values(controller.TokenRequest{
+		GrantType:   "authorization_code",
+		Code:        code,
+		RedirectURI: "https://example.com/oauth/callback",
+	})
+
+	assert.NilError(t, err)
+
+	req, err = http.NewRequest("POST", "/api/oidc/token", strings.NewReader(params.Encode()))
+
+	assert.NilError(t, err)
+
+	req.Header.Set("content-type", "application/x-www-form-urlencoded")
+	req.SetBasicAuth("some-client-id", "some-client-secret")
+
+	router.ServeHTTP(recorder, req)
+	assert.Equal(t, http.StatusBadRequest, recorder.Code)
+
+	// Test userinfo
+	recorder = httptest.NewRecorder()
+
+	req, err = http.NewRequest("GET", "/api/oidc/userinfo", nil)
+	assert.NilError(t, err)
+
+	req.Header.Set("authorization", fmt.Sprintf("Bearer %s", accessToken))
+
+	router.ServeHTTP(recorder, req)
+	assert.Equal(t, http.StatusOK, recorder.Code)
+
+	resJson = map[string]any{}
+
+	err = json.Unmarshal(recorder.Body.Bytes(), &resJson)
+	assert.NilError(t, err)
+
+	_, ok = resJson["sub"].(string)
+	assert.Assert(t, ok)
+
+	name, ok := resJson["name"].(string)
+	assert.Assert(t, ok)
+	assert.Equal(t, name, oidcCtrlTestContext.Name)
+
+	email, ok := resJson["email"].(string)
+	assert.Assert(t, ok)
+	assert.Equal(t, email, oidcCtrlTestContext.Email)
+
+	preferred_username, ok := resJson["preferred_username"].(string)
+	assert.Assert(t, ok)
+	assert.Equal(t, preferred_username, oidcCtrlTestContext.Username)
+
+	// Not sure why this is failing, will look into it later
+	igroups, ok := resJson["groups"].([]any)
+	assert.Assert(t, ok)
+
+	groups := make([]string, len(igroups))
+	for i, group := range igroups {
+		groups[i], ok = group.(string)
+		assert.Assert(t, ok)
+	}
+
+	assert.DeepEqual(t, strings.Split(oidcCtrlTestContext.LdapGroups, ","), groups)
+
+	// Test refresh token
+	recorder = httptest.NewRecorder()
+
+	params, err = query.Values(controller.TokenRequest{
+		GrantType:    "refresh_token",
+		RefreshToken: refreshToken,
+	})
+
+	assert.NilError(t, err)
+
+	req, err = http.NewRequest("POST", "/api/oidc/token", strings.NewReader(params.Encode()))
+
+	assert.NilError(t, err)
+
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	req.SetBasicAuth("some-client-id", "some-client-secret")
+
+	router.ServeHTTP(recorder, req)
+	assert.Equal(t, http.StatusOK, recorder.Code)
+
+	resJson = map[string]any{}
+
+	err = json.Unmarshal(recorder.Body.Bytes(), &resJson)
+
+	assert.NilError(t, err)
+
+	newToken, ok := resJson["access_token"].(string)
+	assert.Assert(t, ok)
+	assert.Assert(t, newToken != accessToken)
+
+	// Ensure old token is invalid
+	recorder = httptest.NewRecorder()
+	req, err = http.NewRequest("GET", "/api/oidc/userinfo", nil)
+
+	assert.NilError(t, err)
+
+	req.Header.Set("authorization", fmt.Sprintf("Bearer %s", accessToken))
+
+	router.ServeHTTP(recorder, req)
+	assert.Equal(t, http.StatusUnauthorized, recorder.Code)
+
+	// Test new token
+	recorder = httptest.NewRecorder()
+	req, err = http.NewRequest("GET", "/api/oidc/userinfo", nil)
+
+	assert.NilError(t, err)
+
+	req.Header.Set("authorization", fmt.Sprintf("Bearer %s", newToken))
+
+	router.ServeHTTP(recorder, req)
+	assert.Equal(t, http.StatusOK, recorder.Code)
+}

internal/controller/well_known_controller.go

@@ -0,0 +1,85 @@
+package controller
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/steveiliop56/tinyauth/internal/service"
+)
+
+type OpenIDConnectConfiguration struct {
+	Issuer                            string   `json:"issuer"`
+	AuthorizationEndpoint             string   `json:"authorization_endpoint"`
+	TokenEndpoint                     string   `json:"token_endpoint"`
+	UserinfoEndpoint                  string   `json:"userinfo_endpoint"`
+	JwksUri                           string   `json:"jwks_uri"`
+	ScopesSupported                   []string `json:"scopes_supported"`
+	ResponseTypesSupported            []string `json:"response_types_supported"`
+	GrantTypesSupported               []string `json:"grant_types_supported"`
+	SubjectTypesSupported             []string `json:"subject_types_supported"`
+	IDTokenSigningAlgValuesSupported  []string `json:"id_token_signing_alg_values_supported"`
+	TokenEndpointAuthMethodsSupported []string `json:"token_endpoint_auth_methods_supported"`
+	ClaimsSupported                   []string `json:"claims_supported"`
+	ServiceDocumentation              string   `json:"service_documentation"`
+}
+
+type WellKnownControllerConfig struct{}
+
+type WellKnownController struct {
+	config WellKnownControllerConfig
+	engine *gin.Engine
+	oidc   *service.OIDCService
+}
+
+func NewWellKnownController(config WellKnownControllerConfig, oidc *service.OIDCService, engine *gin.Engine) *WellKnownController {
+	return &WellKnownController{
+		config: config,
+		oidc:   oidc,
+		engine: engine,
+	}
+}
+
+func (controller *WellKnownController) SetupRoutes() {
+	controller.engine.GET("/.well-known/openid-configuration", controller.OpenIDConnectConfiguration)
+	controller.engine.GET("/.well-known/jwks.json", controller.JWKS)
+}
+
+func (controller *WellKnownController) OpenIDConnectConfiguration(c *gin.Context) {
+	issuer := controller.oidc.GetIssuer()
+	c.JSON(200, OpenIDConnectConfiguration{
+		Issuer:                            issuer,
+		AuthorizationEndpoint:             fmt.Sprintf("%s/authorize", issuer),
+		TokenEndpoint:                     fmt.Sprintf("%s/api/oidc/token", issuer),
+		UserinfoEndpoint:                  fmt.Sprintf("%s/api/oidc/userinfo", issuer),
+		JwksUri:                           fmt.Sprintf("%s/.well-known/jwks.json", issuer),
+		ScopesSupported:                   service.SupportedScopes,
+		ResponseTypesSupported:            service.SupportedResponseTypes,
+		GrantTypesSupported:               service.SupportedGrantTypes,
+		SubjectTypesSupported:             []string{"pairwise"},
+		IDTokenSigningAlgValuesSupported:  []string{"RS256"},
+		TokenEndpointAuthMethodsSupported: []string{"client_secret_basic"},
+		ClaimsSupported:                   []string{"sub", "updated_at", "name", "preferred_username", "email", "groups"},
+		ServiceDocumentation:              "https://tinyauth.app/docs/reference/openid",
+	})
+}
+
+func (controller *WellKnownController) JWKS(c *gin.Context) {
+	jwks, err := controller.oidc.GetJWK()
+
+	if err != nil {
+		c.JSON(500, gin.H{
+			"status":  "500",
+			"message": "failed to get JWK",
+		})
+		return
+	}
+
+	c.Header("content-type", "application/json")
+
+	c.Writer.WriteString(`{"keys":[`)
+	c.Writer.Write(jwks)
+	c.Writer.WriteString(`]}`)
+
+	c.Status(http.StatusOK)
+}

internal/middleware/context_middleware.go

@@ -42,7 +42,7 @@ func (m *ContextMiddleware) Middleware() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		// There is no point in trying to get credentials if it's an OIDC endpoint
 		path := c.Request.URL.Path
-		if slices.Contains(OIDCIgnorePaths, path) {
+		if slices.Contains(OIDCIgnorePaths, strings.TrimSuffix(path, "/")) {
 			c.Next()
 			return
 		}

internal/middleware/ui_middleware.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/steveiliop56/tinyauth/internal/assets"
+	"github.com/steveiliop56/tinyauth/internal/utils/tlog"
 
 	"github.com/gin-gonic/gin"
 )
@@ -39,11 +40,10 @@ func (m *UIMiddleware) Middleware() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		path := strings.TrimPrefix(c.Request.URL.Path, "/")
 
+		tlog.App.Debug().Str("path", path).Msg("path")
+
 		switch strings.SplitN(path, "/", 2)[0] {
-		case "api":
-			c.Next()
-			return
-		case "resources":
+		case "api", "resources", ".well-known":
 			c.Next()
 			return
 		default:

internal/repository/models.go

@@ -6,7 +6,7 @@ package repository
 
 type OidcCode struct {
 	Sub         string
-	Code        string
+	CodeHash    string
 	Scope       string
 	RedirectURI string
 	ClientID    string
@@ -14,11 +14,13 @@ type OidcCode struct {
 }
 
 type OidcToken struct {
-	Sub         string
-	AccessToken string
-	Scope       string
-	ClientID    string
-	ExpiresAt   int64
+	Sub                   string
+	AccessTokenHash       string
+	RefreshTokenHash      string
+	Scope                 string
+	ClientID              string
+	TokenExpiresAt        int64
+	RefreshTokenExpiresAt int64
 }
 
 type OidcUserinfo struct {

internal/repository/oidc_queries.sql.go

@@ -12,7 +12,7 @@ import (
 const createOidcCode = `-- name: CreateOidcCode :one
 INSERT INTO "oidc_codes" (
     "sub",
-    "code",
+    "code_hash",
     "scope",
     "redirect_uri",
     "client_id",
@@ -20,12 +20,12 @@ INSERT INTO "oidc_codes" (
 ) VALUES (
     ?, ?, ?, ?, ?, ?
 )
-RETURNING sub, code, scope, redirect_uri, client_id, expires_at
+RETURNING sub, code_hash, scope, redirect_uri, client_id, expires_at
 `
 
 type CreateOidcCodeParams struct {
 	Sub         string
-	Code        string
+	CodeHash    string
 	Scope       string
 	RedirectURI string
 	ClientID    string
@@ -35,7 +35,7 @@ type CreateOidcCodeParams struct {
 func (q *Queries) CreateOidcCode(ctx context.Context, arg CreateOidcCodeParams) (OidcCode, error) {
 	row := q.db.QueryRowContext(ctx, createOidcCode,
 		arg.Sub,
-		arg.Code,
+		arg.CodeHash,
 		arg.Scope,
 		arg.RedirectURI,
 		arg.ClientID,
@@ -44,7 +44,7 @@ func (q *Queries) CreateOidcCode(ctx context.Context, arg CreateOidcCodeParams)
 	var i OidcCode
 	err := row.Scan(
 		&i.Sub,
-		&i.Code,
+		&i.CodeHash,
 		&i.Scope,
 		&i.RedirectURI,
 		&i.ClientID,
@@ -56,39 +56,47 @@ func (q *Queries) CreateOidcCode(ctx context.Context, arg CreateOidcCodeParams)
 const createOidcToken = `-- name: CreateOidcToken :one
 INSERT INTO "oidc_tokens" (
     "sub",
-    "access_token",
+    "access_token_hash",
+    "refresh_token_hash",
     "scope",
     "client_id",
-    "expires_at"
+    "token_expires_at",
+    "refresh_token_expires_at"
 ) VALUES (
-    ?, ?, ?, ?, ?
+    ?, ?, ?, ?, ?, ?, ?
 )
-RETURNING sub, access_token, scope, client_id, expires_at
+RETURNING sub, access_token_hash, refresh_token_hash, scope, client_id, token_expires_at, refresh_token_expires_at
 `
 
 type CreateOidcTokenParams struct {
-	Sub         string
-	AccessToken string
-	Scope       string
-	ClientID    string
-	ExpiresAt   int64
+	Sub                   string
+	AccessTokenHash       string
+	RefreshTokenHash      string
+	Scope                 string
+	ClientID              string
+	TokenExpiresAt        int64
+	RefreshTokenExpiresAt int64
 }
 
 func (q *Queries) CreateOidcToken(ctx context.Context, arg CreateOidcTokenParams) (OidcToken, error) {
 	row := q.db.QueryRowContext(ctx, createOidcToken,
 		arg.Sub,
-		arg.AccessToken,
+		arg.AccessTokenHash,
+		arg.RefreshTokenHash,
 		arg.Scope,
 		arg.ClientID,
-		arg.ExpiresAt,
+		arg.TokenExpiresAt,
+		arg.RefreshTokenExpiresAt,
 	)
 	var i OidcToken
 	err := row.Scan(
 		&i.Sub,
-		&i.AccessToken,
+		&i.AccessTokenHash,
+		&i.RefreshTokenHash,
 		&i.Scope,
 		&i.ClientID,
-		&i.ExpiresAt,
+		&i.TokenExpiresAt,
+		&i.RefreshTokenExpiresAt,
 	)
 	return i, err
 }
@@ -137,23 +145,121 @@ func (q *Queries) CreateOidcUserInfo(ctx context.Context, arg CreateOidcUserInfo
 	return i, err
 }
 
-const deleteOidcCode = `-- name: DeleteOidcCode :exec
+const deleteExpiredOidcCodes = `-- name: DeleteExpiredOidcCodes :many
 DELETE FROM "oidc_codes"
-WHERE "code" = ?
+WHERE "expires_at" < ?
+RETURNING sub, code_hash, scope, redirect_uri, client_id, expires_at
 `
 
-func (q *Queries) DeleteOidcCode(ctx context.Context, code string) error {
-	_, err := q.db.ExecContext(ctx, deleteOidcCode, code)
+func (q *Queries) DeleteExpiredOidcCodes(ctx context.Context, expiresAt int64) ([]OidcCode, error) {
+	rows, err := q.db.QueryContext(ctx, deleteExpiredOidcCodes, expiresAt)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []OidcCode
+	for rows.Next() {
+		var i OidcCode
+		if err := rows.Scan(
+			&i.Sub,
+			&i.CodeHash,
+			&i.Scope,
+			&i.RedirectURI,
+			&i.ClientID,
+			&i.ExpiresAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const deleteExpiredOidcTokens = `-- name: DeleteExpiredOidcTokens :many
+DELETE FROM "oidc_tokens"
+WHERE "token_expires_at" < ? AND "refresh_token_expires_at" < ?
+RETURNING sub, access_token_hash, refresh_token_hash, scope, client_id, token_expires_at, refresh_token_expires_at
+`
+
+type DeleteExpiredOidcTokensParams struct {
+	TokenExpiresAt        int64
+	RefreshTokenExpiresAt int64
+}
+
+func (q *Queries) DeleteExpiredOidcTokens(ctx context.Context, arg DeleteExpiredOidcTokensParams) ([]OidcToken, error) {
+	rows, err := q.db.QueryContext(ctx, deleteExpiredOidcTokens, arg.TokenExpiresAt, arg.RefreshTokenExpiresAt)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var items []OidcToken
+	for rows.Next() {
+		var i OidcToken
+		if err := rows.Scan(
+			&i.Sub,
+			&i.AccessTokenHash,
+			&i.RefreshTokenHash,
+			&i.Scope,
+			&i.ClientID,
+			&i.TokenExpiresAt,
+			&i.RefreshTokenExpiresAt,
+		); err != nil {
+			return nil, err
+		}
+		items = append(items, i)
+	}
+	if err := rows.Close(); err != nil {
+		return nil, err
+	}
+	if err := rows.Err(); err != nil {
+		return nil, err
+	}
+	return items, nil
+}
+
+const deleteOidcCode = `-- name: DeleteOidcCode :exec
+DELETE FROM "oidc_codes"
+WHERE "code_hash" = ?
+`
+
+func (q *Queries) DeleteOidcCode(ctx context.Context, codeHash string) error {
+	_, err := q.db.ExecContext(ctx, deleteOidcCode, codeHash)
+	return err
+}
+
+const deleteOidcCodeBySub = `-- name: DeleteOidcCodeBySub :exec
+DELETE FROM "oidc_codes"
+WHERE "sub" = ?
+`
+
+func (q *Queries) DeleteOidcCodeBySub(ctx context.Context, sub string) error {
+	_, err := q.db.ExecContext(ctx, deleteOidcCodeBySub, sub)
 	return err
 }
 
 const deleteOidcToken = `-- name: DeleteOidcToken :exec
 DELETE FROM "oidc_tokens"
-WHERE "access_token" = ?
+WHERE "access_token_hash" = ?
 `
 
-func (q *Queries) DeleteOidcToken(ctx context.Context, accessToken string) error {
-	_, err := q.db.ExecContext(ctx, deleteOidcToken, accessToken)
+func (q *Queries) DeleteOidcToken(ctx context.Context, accessTokenHash string) error {
+	_, err := q.db.ExecContext(ctx, deleteOidcToken, accessTokenHash)
+	return err
+}
+
+const deleteOidcTokenBySub = `-- name: DeleteOidcTokenBySub :exec
+DELETE FROM "oidc_tokens"
+WHERE "sub" = ?
+`
+
+func (q *Queries) DeleteOidcTokenBySub(ctx context.Context, sub string) error {
+	_, err := q.db.ExecContext(ctx, deleteOidcTokenBySub, sub)
 	return err
 }
 
@@ -168,16 +274,75 @@ func (q *Queries) DeleteOidcUserInfo(ctx context.Context, sub string) error {
 }
 
 const getOidcCode = `-- name: GetOidcCode :one
-SELECT sub, code, scope, redirect_uri, client_id, expires_at FROM "oidc_codes"
-WHERE "code" = ?
+DELETE FROM "oidc_codes"
+WHERE "code_hash" = ?
+RETURNING sub, code_hash, scope, redirect_uri, client_id, expires_at
 `
 
-func (q *Queries) GetOidcCode(ctx context.Context, code string) (OidcCode, error) {
-	row := q.db.QueryRowContext(ctx, getOidcCode, code)
+func (q *Queries) GetOidcCode(ctx context.Context, codeHash string) (OidcCode, error) {
+	row := q.db.QueryRowContext(ctx, getOidcCode, codeHash)
 	var i OidcCode
 	err := row.Scan(
 		&i.Sub,
-		&i.Code,
+		&i.CodeHash,
+		&i.Scope,
+		&i.RedirectURI,
+		&i.ClientID,
+		&i.ExpiresAt,
+	)
+	return i, err
+}
+
+const getOidcCodeBySub = `-- name: GetOidcCodeBySub :one
+DELETE FROM "oidc_codes"
+WHERE "sub" = ?
+RETURNING sub, code_hash, scope, redirect_uri, client_id, expires_at
+`
+
+func (q *Queries) GetOidcCodeBySub(ctx context.Context, sub string) (OidcCode, error) {
+	row := q.db.QueryRowContext(ctx, getOidcCodeBySub, sub)
+	var i OidcCode
+	err := row.Scan(
+		&i.Sub,
+		&i.CodeHash,
+		&i.Scope,
+		&i.RedirectURI,
+		&i.ClientID,
+		&i.ExpiresAt,
+	)
+	return i, err
+}
+
+const getOidcCodeBySubUnsafe = `-- name: GetOidcCodeBySubUnsafe :one
+SELECT sub, code_hash, scope, redirect_uri, client_id, expires_at FROM "oidc_codes"
+WHERE "sub" = ?
+`
+
+func (q *Queries) GetOidcCodeBySubUnsafe(ctx context.Context, sub string) (OidcCode, error) {
+	row := q.db.QueryRowContext(ctx, getOidcCodeBySubUnsafe, sub)
+	var i OidcCode
+	err := row.Scan(
+		&i.Sub,
+		&i.CodeHash,
+		&i.Scope,
+		&i.RedirectURI,
+		&i.ClientID,
+		&i.ExpiresAt,
+	)
+	return i, err
+}
+
+const getOidcCodeUnsafe = `-- name: GetOidcCodeUnsafe :one
+SELECT sub, code_hash, scope, redirect_uri, client_id, expires_at FROM "oidc_codes"
+WHERE "code_hash" = ?
+`
+
+func (q *Queries) GetOidcCodeUnsafe(ctx context.Context, codeHash string) (OidcCode, error) {
+	row := q.db.QueryRowContext(ctx, getOidcCodeUnsafe, codeHash)
+	var i OidcCode
+	err := row.Scan(
+		&i.Sub,
+		&i.CodeHash,
 		&i.Scope,
 		&i.RedirectURI,
 		&i.ClientID,
@@ -187,19 +352,61 @@ func (q *Queries) GetOidcCode(ctx context.Context, code string) (OidcCode, error
 }
 
 const getOidcToken = `-- name: GetOidcToken :one
-SELECT sub, access_token, scope, client_id, expires_at FROM "oidc_tokens"
-WHERE "access_token" = ?
+SELECT sub, access_token_hash, refresh_token_hash, scope, client_id, token_expires_at, refresh_token_expires_at FROM "oidc_tokens"
+WHERE "access_token_hash" = ?
 `
 
-func (q *Queries) GetOidcToken(ctx context.Context, accessToken string) (OidcToken, error) {
-	row := q.db.QueryRowContext(ctx, getOidcToken, accessToken)
+func (q *Queries) GetOidcToken(ctx context.Context, accessTokenHash string) (OidcToken, error) {
+	row := q.db.QueryRowContext(ctx, getOidcToken, accessTokenHash)
 	var i OidcToken
 	err := row.Scan(
 		&i.Sub,
-		&i.AccessToken,
+		&i.AccessTokenHash,
+		&i.RefreshTokenHash,
 		&i.Scope,
 		&i.ClientID,
-		&i.ExpiresAt,
+		&i.TokenExpiresAt,
+		&i.RefreshTokenExpiresAt,
+	)
+	return i, err
+}
+
+const getOidcTokenByRefreshToken = `-- name: GetOidcTokenByRefreshToken :one
+SELECT sub, access_token_hash, refresh_token_hash, scope, client_id, token_expires_at, refresh_token_expires_at FROM "oidc_tokens"
+WHERE "refresh_token_hash" = ?
+`
+
+func (q *Queries) GetOidcTokenByRefreshToken(ctx context.Context, refreshTokenHash string) (OidcToken, error) {
+	row := q.db.QueryRowContext(ctx, getOidcTokenByRefreshToken, refreshTokenHash)
+	var i OidcToken
+	err := row.Scan(
+		&i.Sub,
+		&i.AccessTokenHash,
+		&i.RefreshTokenHash,
+		&i.Scope,
+		&i.ClientID,
+		&i.TokenExpiresAt,
+		&i.RefreshTokenExpiresAt,
+	)
+	return i, err
+}
+
+const getOidcTokenBySub = `-- name: GetOidcTokenBySub :one
+SELECT sub, access_token_hash, refresh_token_hash, scope, client_id, token_expires_at, refresh_token_expires_at FROM "oidc_tokens"
+WHERE "sub" = ?
+`
+
+func (q *Queries) GetOidcTokenBySub(ctx context.Context, sub string) (OidcToken, error) {
+	row := q.db.QueryRowContext(ctx, getOidcTokenBySub, sub)
+	var i OidcToken
+	err := row.Scan(
+		&i.Sub,
+		&i.AccessTokenHash,
+		&i.RefreshTokenHash,
+		&i.Scope,
+		&i.ClientID,
+		&i.TokenExpiresAt,
+		&i.RefreshTokenExpiresAt,
 	)
 	return i, err
 }
@@ -222,3 +429,42 @@ func (q *Queries) GetOidcUserInfo(ctx context.Context, sub string) (OidcUserinfo
 	)
 	return i, err
 }
+
+const updateOidcTokenByRefreshToken = `-- name: UpdateOidcTokenByRefreshToken :one
+UPDATE "oidc_tokens" SET
+    "access_token_hash" = ?,
+    "refresh_token_hash" = ?,
+    "token_expires_at" = ?,
+    "refresh_token_expires_at" = ?
+WHERE "refresh_token_hash" = ?
+RETURNING sub, access_token_hash, refresh_token_hash, scope, client_id, token_expires_at, refresh_token_expires_at
+`
+
+type UpdateOidcTokenByRefreshTokenParams struct {
+	AccessTokenHash       string
+	RefreshTokenHash      string
+	TokenExpiresAt        int64
+	RefreshTokenExpiresAt int64
+	RefreshTokenHash_2    string
+}
+
+func (q *Queries) UpdateOidcTokenByRefreshToken(ctx context.Context, arg UpdateOidcTokenByRefreshTokenParams) (OidcToken, error) {
+	row := q.db.QueryRowContext(ctx, updateOidcTokenByRefreshToken,
+		arg.AccessTokenHash,
+		arg.RefreshTokenHash,
+		arg.TokenExpiresAt,
+		arg.RefreshTokenExpiresAt,
+		arg.RefreshTokenHash_2,
+	)
+	var i OidcToken
+	err := row.Scan(
+		&i.Sub,
+		&i.AccessTokenHash,
+		&i.RefreshTokenHash,
+		&i.Scope,
+		&i.ClientID,
+		&i.TokenExpiresAt,
+		&i.RefreshTokenExpiresAt,
+	)
+	return i, err
+}

internal/service/oidc_service.go

@@ -1,11 +1,14 @@
 package service
 
 import (
+	"context"
 	"crypto"
 	"crypto/rand"
 	"crypto/rsa"
+	"crypto/sha256"
 	"crypto/x509"
 	"database/sql"
+	"encoding/json"
 	"encoding/pem"
 	"errors"
 	"fmt"
@@ -15,20 +18,18 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
+	"github.com/go-jose/go-jose/v4"
 	"github.com/steveiliop56/tinyauth/internal/config"
 	"github.com/steveiliop56/tinyauth/internal/repository"
 	"github.com/steveiliop56/tinyauth/internal/utils"
 	"github.com/steveiliop56/tinyauth/internal/utils/tlog"
 	"golang.org/x/exp/slices"
-
-	// Should probably switch to another package but for now this works
-	"golang.org/x/oauth2/jws"
 )
 
 var (
 	SupportedScopes        = []string{"openid", "profile", "email", "groups"}
 	SupportedResponseTypes = []string{"code"}
-	SupportedGrantTypes    = []string{"authorization_code"}
+	SupportedGrantTypes    = []string{"authorization_code", "refresh_token"}
 )
 
 var (
@@ -36,8 +37,17 @@ var (
 	ErrCodeNotFound  = errors.New("code_not_found")
 	ErrTokenNotFound = errors.New("token_not_found")
 	ErrTokenExpired  = errors.New("token_expired")
+	ErrInvalidClient = errors.New("invalid_client")
 )
 
+type ClaimSet struct {
+	Iss string `json:"iss"`
+	Aud string `json:"aud"`
+	Sub string `json:"sub"`
+	Iat int64  `json:"iat"`
+	Exp int64  `json:"exp"`
+}
+
 type UserinfoResponse struct {
 	Sub               string   `json:"sub"`
 	Name              string   `json:"name"`
@@ -48,11 +58,12 @@ type UserinfoResponse struct {
 }
 
 type TokenResponse struct {
-	AccessToken string `json:"access_token"`
-	TokenType   string `json:"token_type"`
-	ExpiresIn   int64  `json:"expires_in"`
-	IDToken     string `json:"id_token"`
-	Scope       string `json:"scope"`
+	AccessToken  string `json:"access_token"`
+	RefreshToken string `json:"refresh_token"`
+	TokenType    string `json:"token_type"`
+	ExpiresIn    int64  `json:"expires_in"`
+	IDToken      string `json:"id_token"`
+	Scope        string `json:"scope"`
 }
 
 type AuthorizeRequest struct {
@@ -68,6 +79,7 @@ type OIDCServiceConfig struct {
 	PrivateKeyPath string
 	PublicKeyPath  string
 	Issuer         string
+	SessionExpiry  int
 }
 
 type OIDCService struct {
@@ -122,6 +134,9 @@ func (service *OIDCService) Init() error {
 			return err
 		}
 		der := x509.MarshalPKCS1PrivateKey(privateKey)
+		if der == nil {
+			return errors.New("failed to marshal private key")
+		}
 		encoded := pem.EncodeToMemory(&pem.Block{
 			Type:  "RSA PRIVATE KEY",
 			Bytes: der,
@@ -133,6 +148,9 @@ func (service *OIDCService) Init() error {
 		service.privateKey = privateKey
 	} else {
 		block, _ := pem.Decode(fprivateKey)
+		if block == nil {
+			return errors.New("failed to decode private key")
+		}
 		privateKey, err = x509.ParsePKCS1PrivateKey(block.Bytes)
 		if err != nil {
 			return err
@@ -149,6 +167,9 @@ func (service *OIDCService) Init() error {
 	if errors.Is(err, os.ErrNotExist) {
 		publicKey := service.privateKey.Public()
 		der := x509.MarshalPKCS1PublicKey(publicKey.(*rsa.PublicKey))
+		if der == nil {
+			return errors.New("failed to marshal public key")
+		}
 		encoded := pem.EncodeToMemory(&pem.Block{
 			Type:  "RSA PUBLIC KEY",
 			Bytes: der,
@@ -160,6 +181,9 @@ func (service *OIDCService) Init() error {
 		service.publicKey = publicKey
 	} else {
 		block, _ := pem.Decode(fpublicKey)
+		if block == nil {
+			return errors.New("failed to decode public key")
+		}
 		publicKey, err := x509.ParsePKCS1PublicKey(block.Bytes)
 		if err != nil {
 			return err
@@ -189,7 +213,7 @@ func (service *OIDCService) Init() error {
 }
 
 func (service *OIDCService) GetIssuer() string {
-	return service.config.Issuer
+	return service.issuer
 }
 
 func (service *OIDCService) GetClient(id string) (config.OIDCClientConfig, bool) {
@@ -245,8 +269,8 @@ func (service *OIDCService) StoreCode(c *gin.Context, sub string, code string, r
 
 	// Insert the code into the database
 	_, err := service.queries.CreateOidcCode(c, repository.CreateOidcCodeParams{
-		Sub:  sub,
-		Code: code,
+		Sub:      sub,
+		CodeHash: service.Hash(code),
 		// Here it's safe to split and trust the output since, we validated the scopes before
 		Scope:       strings.Join(service.filterScopes(strings.Split(req.Scope, " ")), ","),
 		RedirectURI: req.RedirectURI,
@@ -282,14 +306,14 @@ func (service *OIDCService) StoreUserinfo(c *gin.Context, sub string, userContex
 
 func (service *OIDCService) ValidateGrantType(grantType string) error {
 	if !slices.Contains(SupportedGrantTypes, grantType) {
-		return errors.New("unsupported_response_type")
+		return errors.New("unsupported_grant_type")
 	}
 
 	return nil
 }
 
-func (service *OIDCService) GetCodeEntry(c *gin.Context, code string) (repository.OidcCode, error) {
-	oidcCode, err := service.queries.GetOidcCode(c, code)
+func (service *OIDCService) GetCodeEntry(c *gin.Context, codeHash string) (repository.OidcCode, error) {
+	oidcCode, err := service.queries.GetOidcCode(c, codeHash)
 
 	if err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
@@ -299,7 +323,7 @@ func (service *OIDCService) GetCodeEntry(c *gin.Context, code string) (repositor
 	}
 
 	if time.Now().Unix() > oidcCode.ExpiresAt {
-		err = service.queries.DeleteOidcCode(c, code)
+		err = service.queries.DeleteOidcCode(c, codeHash)
 		if err != nil {
 			return repository.OidcCode{}, err
 		}
@@ -315,11 +339,23 @@ func (service *OIDCService) GetCodeEntry(c *gin.Context, code string) (repositor
 
 func (service *OIDCService) generateIDToken(client config.OIDCClientConfig, sub string) (string, error) {
 	createdAt := time.Now().Unix()
+	expiresAt := time.Now().Add(time.Duration(service.config.SessionExpiry) * time.Second).Unix()
 
-	// TODO: This should probably be user-configured if refresh logic does not exist
-	expiresAt := time.Now().Add(time.Duration(1) * time.Hour).Unix()
+	signer, err := jose.NewSigner(jose.SigningKey{
+		Algorithm: jose.RS256,
+		Key:       service.privateKey,
+	}, &jose.SignerOptions{
+		ExtraHeaders: map[jose.HeaderKey]any{
+			"typ": "jwt",
+			"jku": fmt.Sprintf("%s/.well-known/jwks.json", service.issuer),
+		},
+	})
 
-	claims := jws.ClaimSet{
+	if err != nil {
+		return "", err
+	}
+
+	claims := ClaimSet{
 		Iss: service.issuer,
 		Aud: client.ClientID,
 		Sub: sub,
@@ -327,12 +363,19 @@ func (service *OIDCService) generateIDToken(client config.OIDCClientConfig, sub
 		Exp: expiresAt,
 	}
 
-	header := jws.Header{
-		Algorithm: "RS256",
-		Typ:       "JWT",
+	payload, err := json.Marshal(claims)
+
+	if err != nil {
+		return "", err
 	}
 
-	token, err := jws.Encode(&header, &claims, service.privateKey)
+	object, err := signer.Sign(payload)
+
+	if err != nil {
+		return "", err
+	}
+
+	token, err := object.CompactSerialize()
 
 	if err != nil {
 		return "", err
@@ -349,21 +392,30 @@ func (service *OIDCService) GenerateAccessToken(c *gin.Context, client config.OI
 	}
 
 	accessToken := rand.Text()
-	expiresAt := time.Now().Add(time.Duration(1) * time.Hour).Unix()
+	refreshToken := rand.Text()
+
+	tokenExpiresAt := time.Now().Add(time.Duration(service.config.SessionExpiry) * time.Second).Unix()
+
+	// Refresh token lives double the time of an access token but can't be used to access userinfo
+	refrshTokenExpiresAt := time.Now().Add(time.Duration(service.config.SessionExpiry*2) * time.Second).Unix()
 
 	tokenResponse := TokenResponse{
-		AccessToken: accessToken,
-		TokenType:   "Bearer",
-		ExpiresIn:   int64(time.Hour.Seconds()),
-		IDToken:     idToken,
-		Scope:       strings.ReplaceAll(scope, ",", " "),
+		AccessToken:  accessToken,
+		RefreshToken: refreshToken,
+		TokenType:    "Bearer",
+		ExpiresIn:    int64(service.config.SessionExpiry),
+		IDToken:      idToken,
+		Scope:        strings.ReplaceAll(scope, ",", " "),
 	}
 
 	_, err = service.queries.CreateOidcToken(c, repository.CreateOidcTokenParams{
-		Sub:         sub,
-		AccessToken: accessToken,
-		Scope:       scope,
-		ExpiresAt:   expiresAt,
+		Sub:                   sub,
+		AccessTokenHash:       service.Hash(accessToken),
+		RefreshTokenHash:      service.Hash(refreshToken),
+		ClientID:              client.ClientID,
+		Scope:                 scope,
+		TokenExpiresAt:        tokenExpiresAt,
+		RefreshTokenExpiresAt: refrshTokenExpiresAt,
 	})
 
 	if err != nil {
@@ -373,20 +425,77 @@ func (service *OIDCService) GenerateAccessToken(c *gin.Context, client config.OI
 	return tokenResponse, nil
 }
 
-func (service *OIDCService) DeleteCodeEntry(c *gin.Context, code string) error {
-	return service.queries.DeleteOidcCode(c, code)
+func (service *OIDCService) RefreshAccessToken(c *gin.Context, refreshToken string, reqClientId string) (TokenResponse, error) {
+	entry, err := service.queries.GetOidcTokenByRefreshToken(c, service.Hash(refreshToken))
+
+	if err != nil {
+		if err == sql.ErrNoRows {
+			return TokenResponse{}, ErrTokenNotFound
+		}
+		return TokenResponse{}, err
+	}
+
+	if entry.RefreshTokenExpiresAt < time.Now().Unix() {
+		return TokenResponse{}, ErrTokenExpired
+	}
+
+	// Ensure the client ID in the request matches the client ID in the token
+	if entry.ClientID != reqClientId {
+		return TokenResponse{}, ErrInvalidClient
+	}
+
+	idToken, err := service.generateIDToken(config.OIDCClientConfig{
+		ClientID: entry.ClientID,
+	}, entry.Sub)
+
+	if err != nil {
+		return TokenResponse{}, err
+	}
+
+	accessToken := rand.Text()
+	newRefreshToken := rand.Text()
+
+	tokenExpiresAt := time.Now().Add(time.Duration(service.config.SessionExpiry) * time.Second).Unix()
+	refrshTokenExpiresAt := time.Now().Add(time.Duration(service.config.SessionExpiry*2) * time.Second).Unix()
+
+	tokenResponse := TokenResponse{
+		AccessToken:  accessToken,
+		RefreshToken: newRefreshToken,
+		TokenType:    "Bearer",
+		ExpiresIn:    int64(service.config.SessionExpiry),
+		IDToken:      idToken,
+		Scope:        strings.ReplaceAll(entry.Scope, ",", " "),
+	}
+
+	_, err = service.queries.UpdateOidcTokenByRefreshToken(c, repository.UpdateOidcTokenByRefreshTokenParams{
+		AccessTokenHash:       service.Hash(accessToken),
+		RefreshTokenHash:      service.Hash(newRefreshToken),
+		TokenExpiresAt:        tokenExpiresAt,
+		RefreshTokenExpiresAt: refrshTokenExpiresAt,
+		RefreshTokenHash_2:    service.Hash(refreshToken), // that's the selector, it's not stored in the db
+	})
+
+	if err != nil {
+		return TokenResponse{}, err
+	}
+
+	return tokenResponse, nil
+}
+
+func (service *OIDCService) DeleteCodeEntry(c *gin.Context, codeHash string) error {
+	return service.queries.DeleteOidcCode(c, codeHash)
 }
 
 func (service *OIDCService) DeleteUserinfo(c *gin.Context, sub string) error {
 	return service.queries.DeleteOidcUserInfo(c, sub)
 }
 
-func (service *OIDCService) DeleteToken(c *gin.Context, token string) error {
-	return service.queries.DeleteOidcToken(c, token)
+func (service *OIDCService) DeleteToken(c *gin.Context, tokenHash string) error {
+	return service.queries.DeleteOidcToken(c, tokenHash)
 }
 
-func (service *OIDCService) GetAccessToken(c *gin.Context, token string) (repository.OidcToken, error) {
-	entry, err := service.queries.GetOidcToken(c, token)
+func (service *OIDCService) GetAccessToken(c *gin.Context, tokenHash string) (repository.OidcToken, error) {
+	entry, err := service.queries.GetOidcToken(c, tokenHash)
 
 	if err != nil {
 		if err == sql.ErrNoRows {
@@ -395,14 +504,17 @@ func (service *OIDCService) GetAccessToken(c *gin.Context, token string) (reposi
 		return repository.OidcToken{}, err
 	}
 
-	if entry.ExpiresAt < time.Now().Unix() {
-		err := service.DeleteToken(c, token)
-		if err != nil {
-			return repository.OidcToken{}, err
-		}
-		err = service.DeleteUserinfo(c, entry.Sub)
-		if err != nil {
-			return repository.OidcToken{}, err
+	if entry.TokenExpiresAt < time.Now().Unix() {
+		// If refresh token is expired, delete the token and userinfo since there is no way for the client to access anything anymore
+		if entry.RefreshTokenExpiresAt < time.Now().Unix() {
+			err := service.DeleteToken(c, tokenHash)
+			if err != nil {
+				return repository.OidcToken{}, err
+			}
+			err = service.DeleteUserinfo(c, entry.Sub)
+			if err != nil {
+				return repository.OidcToken{}, err
+			}
 		}
 		return repository.OidcToken{}, ErrTokenExpired
 	}
@@ -431,8 +543,99 @@ func (service *OIDCService) CompileUserinfo(user repository.OidcUserinfo, scope
 	}
 
 	if slices.Contains(scopes, "groups") {
-		userInfo.Groups = strings.Split(user.Groups, ",")
+		if user.Groups != "" {
+			userInfo.Groups = strings.Split(user.Groups, ",")
+		} else {
+			userInfo.Groups = []string{}
+		}
 	}
 
 	return userInfo
 }
+
+func (service *OIDCService) Hash(token string) string {
+	hasher := sha256.New()
+	hasher.Write([]byte(token))
+	return fmt.Sprintf("%x", hasher.Sum(nil))
+}
+
+func (service *OIDCService) DeleteOldSession(ctx context.Context, sub string) error {
+	err := service.queries.DeleteOidcCodeBySub(ctx, sub)
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return err
+	}
+	err = service.queries.DeleteOidcTokenBySub(ctx, sub)
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return err
+	}
+	err = service.queries.DeleteOidcUserInfo(ctx, sub)
+	if err != nil && !errors.Is(err, sql.ErrNoRows) {
+		return err
+	}
+	return nil
+}
+
+// Cleanup routine - Resource heavy due to the linked tables
+func (service *OIDCService) Cleanup() {
+	// We need a context for the routine
+	ctx := context.Background()
+
+	ticker := time.NewTicker(time.Duration(30) * time.Minute)
+	defer ticker.Stop()
+
+	for range ticker.C {
+		currentTime := time.Now().Unix()
+
+		// For the OIDC tokens, if they are expired we delete the userinfo and codes
+		expiredTokens, err := service.queries.DeleteExpiredOidcTokens(ctx, repository.DeleteExpiredOidcTokensParams{
+			TokenExpiresAt:        currentTime,
+			RefreshTokenExpiresAt: currentTime,
+		})
+
+		if err != nil {
+			tlog.App.Warn().Err(err).Msg("Failed to delete expired tokens")
+		}
+
+		for _, expiredToken := range expiredTokens {
+			err := service.DeleteOldSession(ctx, expiredToken.Sub)
+			if err != nil {
+				tlog.App.Warn().Err(err).Msg("Failed to delete old session")
+			}
+		}
+
+		// For expired codes, we need to get the sub, check if tokens are expired and if they are remove everything
+		expiredCodes, err := service.queries.DeleteExpiredOidcCodes(ctx, currentTime)
+
+		if err != nil {
+			tlog.App.Warn().Err(err).Msg("Failed to delete expired codes")
+		}
+
+		for _, expiredCode := range expiredCodes {
+			token, err := service.queries.GetOidcTokenBySub(ctx, expiredCode.Sub)
+
+			if err != nil {
+				if err == sql.ErrNoRows {
+					continue
+				}
+				tlog.App.Warn().Err(err).Msg("Failed to get OIDC token by sub")
+			}
+
+			if token.TokenExpiresAt < currentTime && token.RefreshTokenExpiresAt < currentTime {
+				err := service.DeleteOldSession(ctx, expiredCode.Sub)
+				if err != nil {
+					tlog.App.Warn().Err(err).Msg("Failed to delete session")
+				}
+			}
+		}
+	}
+}
+
+func (service *OIDCService) GetJWK() ([]byte, error) {
+	jwk := jose.JSONWebKey{
+		Key:       service.privateKey,
+		Algorithm: string(jose.RS256),
+		Use:       "sig",
+	}
+
+	return jwk.Public().MarshalJSON()
+}

internal/utils/security_utils.go

@@ -1,11 +1,8 @@
 package utils
 
 import (
-	"crypto/rand"
 	"encoding/base64"
 	"errors"
-	"math"
-	"math/big"
 	"net"
 	"regexp"
 	"strings"
@@ -108,28 +105,3 @@ func GenerateUUID(str string) string {
 	uuid := uuid.NewSHA1(uuid.NameSpaceURL, []byte(str))
 	return uuid.String()
 }
-
-// These could definitely be improved A LOT but at least they are cryptographically secure
-func GetRandomString(length int) (string, error) {
-	if length < 1 {
-		return "", errors.New("length must be greater than 0")
-	}
-	b := make([]byte, length)
-	_, err := rand.Read(b)
-	if err != nil {
-		return "", err
-	}
-	state := base64.RawURLEncoding.EncodeToString(b)
-	return state[:length], nil
-}
-
-func GetRandomInt(length int) (int64, error) {
-	if length < 1 {
-		return 0, errors.New("length must be greater than 0")
-	}
-	a, err := rand.Int(rand.Reader, big.NewInt(int64(math.Pow(10, float64(length)))))
-	if err != nil {
-		return 0, err
-	}
-	return a.Int64(), nil
-}

internal/utils/security_utils_test.go

@@ -2,7 +2,6 @@ package utils_test
 
 import (
 	"os"
-	"strconv"
 	"testing"
 
 	"github.com/steveiliop56/tinyauth/internal/utils"
@@ -148,25 +147,3 @@ func TestGenerateUUID(t *testing.T) {
 	id3 := utils.GenerateUUID("differentstring")
 	assert.Assert(t, id1 != id3)
 }
-
-func TestGetRandomString(t *testing.T) {
-	// Test with normal length
-	state, err := utils.GetRandomString(16)
-	assert.NilError(t, err)
-	assert.Equal(t, 16, len(state))
-
-	// Test with zero length
-	state, err = utils.GetRandomString(0)
-	assert.Error(t, err, "length must be greater than 0")
-}
-
-func TestGetRandomInt(t *testing.T) {
-	// Test with normal length
-	state, err := utils.GetRandomInt(16)
-	assert.NilError(t, err)
-	assert.Equal(t, 16, len(strconv.Itoa(int(state))))
-
-	// Test with zero length
-	state, err = utils.GetRandomInt(0)
-	assert.Error(t, err, "length must be greater than 0")
-}

sql/oidc_queries.sql

@@ -1,7 +1,7 @@
 -- name: CreateOidcCode :one
 INSERT INTO "oidc_codes" (
     "sub",
-    "code",
+    "code_hash",
     "scope",
     "redirect_uri",
     "client_id",
@@ -11,33 +11,75 @@ INSERT INTO "oidc_codes" (
 )
 RETURNING *;
 
--- name: DeleteOidcCode :exec
-DELETE FROM "oidc_codes"
-WHERE "code" = ?;
+-- name: GetOidcCodeUnsafe :one
+SELECT * FROM "oidc_codes"
+WHERE "code_hash" = ?;
 
 -- name: GetOidcCode :one
+DELETE FROM "oidc_codes"
+WHERE "code_hash" = ?
+RETURNING *;
+
+-- name: GetOidcCodeBySubUnsafe :one
 SELECT * FROM "oidc_codes"
-WHERE "code" = ?;
+WHERE "sub" = ?;
+
+-- name: GetOidcCodeBySub :one
+DELETE FROM "oidc_codes"
+WHERE "sub" = ?
+RETURNING *;
+
+-- name: DeleteOidcCode :exec
+DELETE FROM "oidc_codes"
+WHERE "code_hash" = ?;
+
+-- name: DeleteOidcCodeBySub :exec
+DELETE FROM "oidc_codes"
+WHERE "sub" = ?;
 
 -- name: CreateOidcToken :one
 INSERT INTO "oidc_tokens" (
     "sub",
-    "access_token",
+    "access_token_hash",
+    "refresh_token_hash",
     "scope",
     "client_id",
-    "expires_at"
+    "token_expires_at",
+    "refresh_token_expires_at"
 ) VALUES (
-    ?, ?, ?, ?, ?
+    ?, ?, ?, ?, ?, ?, ?
 )
 RETURNING *;
 
--- name: DeleteOidcToken :exec
-DELETE FROM "oidc_tokens"
-WHERE "access_token" = ?;
+-- name: UpdateOidcTokenByRefreshToken :one
+UPDATE "oidc_tokens" SET
+    "access_token_hash" = ?,
+    "refresh_token_hash" = ?,
+    "token_expires_at" = ?,
+    "refresh_token_expires_at" = ?
+WHERE "refresh_token_hash" = ?
+RETURNING *;
 
 -- name: GetOidcToken :one
 SELECT * FROM "oidc_tokens"
-WHERE "access_token" = ?;
+WHERE "access_token_hash" = ?;
+
+-- name: GetOidcTokenByRefreshToken :one
+SELECT * FROM "oidc_tokens"
+WHERE "refresh_token_hash" = ?;
+
+-- name: GetOidcTokenBySub :one
+SELECT * FROM "oidc_tokens"
+WHERE "sub" = ?;
+
+
+-- name: DeleteOidcToken :exec
+DELETE FROM "oidc_tokens"
+WHERE "access_token_hash" = ?;
+
+-- name: DeleteOidcTokenBySub :exec
+DELETE FROM "oidc_tokens"
+WHERE "sub" = ?;
 
 -- name: CreateOidcUserInfo :one
 INSERT INTO "oidc_userinfo" (
@@ -52,10 +94,20 @@ INSERT INTO "oidc_userinfo" (
 )
 RETURNING *;
 
+-- name: GetOidcUserInfo :one
+SELECT * FROM "oidc_userinfo"
+WHERE "sub" = ?;
+
 -- name: DeleteOidcUserInfo :exec
 DELETE FROM "oidc_userinfo"
 WHERE "sub" = ?;
 
--- name: GetOidcUserInfo :one
-SELECT * FROM "oidc_userinfo"
-WHERE "sub" = ?;
+-- name: DeleteExpiredOidcCodes :many
+DELETE FROM "oidc_codes"
+WHERE "expires_at" < ?
+RETURNING *;
+
+-- name: DeleteExpiredOidcTokens :many
+DELETE FROM "oidc_tokens"
+WHERE "token_expires_at" < ? AND "refresh_token_expires_at" < ?
+RETURNING *;

sql/oidc_schemas.sql

@@ -1,6 +1,6 @@
 CREATE TABLE IF NOT EXISTS "oidc_codes" (
     "sub" TEXT NOT NULL UNIQUE,
-    "code" TEXT NOT NULL PRIMARY KEY UNIQUE,
+    "code_hash" TEXT NOT NULL PRIMARY KEY UNIQUE,
     "scope" TEXT NOT NULL,
     "redirect_uri" TEXT NOT NULL,
     "client_id" TEXT NOT NULL,
@@ -9,10 +9,12 @@ CREATE TABLE IF NOT EXISTS "oidc_codes" (
 
 CREATE TABLE IF NOT EXISTS "oidc_tokens" (
     "sub" TEXT NOT NULL UNIQUE,
-    "access_token" TEXT NOT NULL PRIMARY KEY UNIQUE,
+    "access_token_hash" TEXT NOT NULL PRIMARY KEY UNIQUE,
+    "refresh_token_hash" TEXT NOT NULL,
     "scope" TEXT NOT NULL,
     "client_id" TEXT NOT NULL,
-    "expires_at" INTEGER NOT NULL
+    "token_expires_at" INTEGER NOT NULL,
+    "refresh_token_expires_at" INTEGER NOT NULL
 );
 
 CREATE TABLE IF NOT EXISTS "oidc_userinfo" (