Support disable passkey auth

custom/conf/app.example.ini

@@ -790,10 +790,13 @@ LEVEL = Info
 ;; Please note that setting this to false will not disable OAuth Basic or Basic authentication using a token
 ;ENABLE_BASIC_AUTHENTICATION = true
 ;;
-;; Show the password sign-in form (for password-based login), otherwise, only show OAuth2 login methods.
-;; If you set it to false, maybe it also needs to set ENABLE_BASIC_AUTHENTICATION to false to completely disable password-based authentication.
+;; Show the password sign-in form (for password-based login), otherwise, only show OAuth2 login methods and passkey login link.
+;; If you set it to false, maybe it also needs to set ENABLE_BASIC_AUTHENTICATION or ENABLE_PASSKEY_AUTHENTICATION to false to completely disable password-based authentication.
 ;ENABLE_PASSWORD_SIGNIN_FORM = true
 ;;
+;; This setting enables gitea to be signed in with a passkey
+;ENABLE_PASSKEY_AUTHENTICATION = true
+;;
 ;; More detail: https://github.com/gogits/gogs/issues/165
 ;ENABLE_REVERSE_PROXY_AUTHENTICATION = false
 ; Enable this to allow reverse proxy authentication for API requests, the reverse proxy is responsible for ensuring that no CSRF is possible.

modules/setting/service.go

@@ -46,6 +46,7 @@ var Service = struct {
 	RequireSignInView                       bool
 	EnableNotifyMail                        bool
 	EnableBasicAuth                         bool
+	EnablePasskeyAuth                       bool
 	EnableReverseProxyAuth                  bool
 	EnableReverseProxyAuthAPI               bool
 	EnableReverseProxyAutoRegister          bool
@@ -161,6 +162,7 @@ func loadServiceFrom(rootCfg ConfigProvider) {
 	Service.RequireSignInView = sec.Key("REQUIRE_SIGNIN_VIEW").MustBool()
 	Service.EnableBasicAuth = sec.Key("ENABLE_BASIC_AUTHENTICATION").MustBool(true)
 	Service.EnablePasswordSignInForm = sec.Key("ENABLE_PASSWORD_SIGNIN_FORM").MustBool(true)
+	Service.EnablePasskeyAuth = sec.Key("ENABLE_PASSKEY_AUTHENTICATION").MustBool(true)
 	Service.EnableReverseProxyAuth = sec.Key("ENABLE_REVERSE_PROXY_AUTHENTICATION").MustBool()
 	Service.EnableReverseProxyAuthAPI = sec.Key("ENABLE_REVERSE_PROXY_AUTHENTICATION_API").MustBool()
 	Service.EnableReverseProxyAutoRegister = sec.Key("ENABLE_REVERSE_PROXY_AUTO_REGISTRATION").MustBool()

routers/web/auth/auth.go

@@ -169,6 +169,7 @@ func prepareSignInPageData(ctx *context.Context) {
 	ctx.Data["PageIsLogin"] = true
 	ctx.Data["EnableSSPI"] = auth.IsSSPIEnabled(ctx)
 	ctx.Data["EnablePasswordSignInForm"] = setting.Service.EnablePasswordSignInForm
+	ctx.Data["EnablePasskeyAuth"] = setting.Service.EnablePasskeyAuth
 
 	if setting.Service.EnableCaptcha && setting.Service.RequireCaptchaForLogin {
 		context.SetCaptchaData(ctx)

routers/web/auth/linkaccount.go

@@ -44,6 +44,7 @@ func LinkAccount(ctx *context.Context) {
 	ctx.Data["DisableRegistration"] = setting.Service.DisableRegistration
 	ctx.Data["AllowOnlyInternalRegistration"] = setting.Service.AllowOnlyInternalRegistration
 	ctx.Data["ShowRegistrationButton"] = false
+	ctx.Data["EnablePasskeyAuth"] = setting.Service.EnablePasskeyAuth
 
 	// use this to set the right link into the signIn and signUp templates in the link_account template
 	ctx.Data["SignInLink"] = setting.AppSubURL + "/user/link_account_signin"
@@ -136,6 +137,7 @@ func LinkAccountPostSignIn(ctx *context.Context) {
 	ctx.Data["CfTurnstileSitekey"] = setting.Service.CfTurnstileSitekey
 	ctx.Data["DisableRegistration"] = setting.Service.DisableRegistration
 	ctx.Data["ShowRegistrationButton"] = false
+	ctx.Data["EnablePasskeyAuth"] = setting.Service.EnablePasskeyAuth
 
 	// use this to set the right link into the signIn and signUp templates in the link_account template
 	ctx.Data["SignInLink"] = setting.AppSubURL + "/user/link_account_signin"
@@ -224,6 +226,7 @@ func LinkAccountPostRegister(ctx *context.Context) {
 	ctx.Data["CfTurnstileSitekey"] = setting.Service.CfTurnstileSitekey
 	ctx.Data["DisableRegistration"] = setting.Service.DisableRegistration
 	ctx.Data["ShowRegistrationButton"] = false
+	ctx.Data["EnablePasskeyAuth"] = setting.Service.EnablePasskeyAuth
 
 	// use this to set the right link into the signIn and signUp templates in the link_account template
 	ctx.Data["SignInLink"] = setting.AppSubURL + "/user/link_account_signin"

routers/web/auth/webauthn.go

@@ -50,6 +50,11 @@ func WebAuthn(ctx *context.Context) {
 
 // WebAuthnPasskeyAssertion submits a WebAuthn challenge for the passkey login to the browser
 func WebAuthnPasskeyAssertion(ctx *context.Context) {
+	if !setting.Service.EnablePasskeyAuth {
+		ctx.Error(http.StatusForbidden)
+		return
+	}
+
 	assertion, sessionData, err := wa.WebAuthn.BeginDiscoverableLogin()
 	if err != nil {
 		ctx.ServerError("webauthn.BeginDiscoverableLogin", err)
@@ -66,6 +71,11 @@ func WebAuthnPasskeyAssertion(ctx *context.Context) {
 
 // WebAuthnPasskeyLogin handles the WebAuthn login process using a Passkey
 func WebAuthnPasskeyLogin(ctx *context.Context) {
+	if !setting.Service.EnablePasskeyAuth {
+		ctx.Error(http.StatusForbidden)
+		return
+	}
+
 	sessionData, okData := ctx.Session.Get("webauthnPasskeyAssertion").(*webauthn.SessionData)
 	if !okData || sessionData == nil {
 		ctx.ServerError("ctx.Session.Get", errors.New("not in WebAuthn session"))

templates/user/auth/signin_inner.tmpl

@@ -60,10 +60,14 @@
 </div>
 
 <div class="ui container fluid">
-	{{template "user/auth/webauthn_error" .}}
+	{{if .EnablePasskeyAuth}}
+		{{template "user/auth/webauthn_error" .}}
+	{{end}}
 
 	<div class="ui attached segment header top tw-max-w-2xl tw-m-auto tw-flex tw-flex-col tw-items-center">
-		<a class="signin-passkey">{{ctx.Locale.Tr "auth.signin_passkey"}}</a>
+		{{if .EnablePasskeyAuth}}
+			<a class="signin-passkey">{{ctx.Locale.Tr "auth.signin_passkey"}}</a>
+		{{end}}
 
 		{{if .ShowRegistrationButton}}
 			<div class="field">

tests/integration/signin_test.go

@@ -122,3 +122,25 @@ func TestEnablePasswordSignInForm(t *testing.T) {
 		MakeRequest(t, req, http.StatusOK)
 	})
 }
+
+func TestEnablePasskeyAuth(t *testing.T) {
+	defer tests.PrepareTestEnv(t)()
+
+	t.Run("EnablePasskeyAuth=false", func(t *testing.T) {
+		defer tests.PrintCurrentTest(t)()
+		defer test.MockVariableValue(&setting.Service.EnablePasskeyAuth, false)()
+
+		req := NewRequest(t, "GET", "/user/login")
+		resp := MakeRequest(t, req, http.StatusOK)
+		NewHTMLParser(t, resp.Body).AssertElement(t, ".signin-passkey", false)
+	})
+
+	t.Run("EnablePasskeyAuth=true", func(t *testing.T) {
+		defer tests.PrintCurrentTest(t)()
+		defer test.MockVariableValue(&setting.Service.EnablePasskeyAuth, true)()
+
+		req := NewRequest(t, "GET", "/user/login")
+		resp := MakeRequest(t, req, http.StatusOK)
+		NewHTMLParser(t, resp.Body).AssertElement(t, ".signin-passkey", true)
+	})
+}