feat: restrict languages (#6931)

* feat: return 404 or 409 if org reg disallowed

* fix: system limit permissions

* feat: add iam limits api

* feat: disallow public org registrations on default instance

* add integration test

* test: integration

* fix test

* docs: describe public org registrations

* avoid updating docs deps

* fix system limits integration test

* silence integration tests

* fix linting

* ignore strange linter complaints

* review

* improve reset properties naming

* redefine the api

* use restrictions aggregate

* test query

* simplify and test projection

* test commands

* fix unit tests

* move integration test

* support restrictions on default instance

* also test GetRestrictions

* self review

* lint

* abstract away resource owner

* fix tests

* configure supported languages

* fix allowed languages

* fix tests

* default lang must not be restricted

* preferred language must be allowed

* change preferred languages

* check languages everywhere

* lint

* test command side

* lint

* add integration test

* add integration test

* restrict supported ui locales

* lint

* lint

* cleanup

* lint

* allow undefined preferred language

* fix integration tests

* update main

* fix env var

* ignore linter

* ignore linter

* improve integration test config

* reduce cognitive complexity

* compile

* check for duplicates

* remove useless restriction checks

* review

* revert restriction renaming

* fix language restrictions

* lint

* generate

* allow custom texts for supported langs for now

* fix tests

* cleanup

* cleanup

* cleanup

* lint

* unsupported preferred lang is allowed

* fix integration test

* finish reverting to old property name

* finish reverting to old property name

* load languages

* refactor(i18n): centralize translators and fs

* lint

* amplify no validations on preferred languages

* fix integration test

* lint

* fix resetting allowed languages

* test unchanged restrictions

internal/api/oidc/op.go

@@ -6,11 +6,9 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/rakyll/statik/fs"
 	"github.com/zitadel/oidc/v3/pkg/oidc"
 	"github.com/zitadel/oidc/v3/pkg/op"
 	"golang.org/x/exp/slog"
-	"golang.org/x/text/language"
 
 	"github.com/zitadel/zitadel/internal/api/assets"
 	http_utils "github.com/zitadel/zitadel/internal/api/http"
@@ -23,7 +21,6 @@ import (
 	caos_errs "github.com/zitadel/zitadel/internal/errors"
 	"github.com/zitadel/zitadel/internal/eventstore"
 	"github.com/zitadel/zitadel/internal/eventstore/handler/crdb"
-	"github.com/zitadel/zitadel/internal/i18n"
 	"github.com/zitadel/zitadel/internal/query"
 	"github.com/zitadel/zitadel/internal/telemetry/metrics"
 )
@@ -167,10 +164,6 @@ func ignoredQuotaLimitEndpoint(endpoints *EndpointConfig) []string {
 }
 
 func createOPConfig(config Config, defaultLogoutRedirectURI string, cryptoKey []byte) (*op.Config, error) {
-	supportedLanguages, err := getSupportedLanguages()
-	if err != nil {
-		return nil, err
-	}
 	opConfig := &op.Config{
 		DefaultLogoutRedirectURI: defaultLogoutRedirectURI,
 		CodeMethodS256:           config.CodeMethodS256,
@@ -178,7 +171,6 @@ func createOPConfig(config Config, defaultLogoutRedirectURI string, cryptoKey []
 		AuthMethodPrivateKeyJWT:  config.AuthMethodPrivateKeyJWT,
 		GrantTypeRefreshToken:    config.GrantTypeRefreshToken,
 		RequestObjectSupported:   config.RequestObjectSupported,
-		SupportedUILocales:       supportedLanguages,
 		DeviceAuthorization:      config.DeviceAuth.toOPConfig(),
 	}
 	if cryptoLength := len(cryptoKey); cryptoLength != 32 {
@@ -211,11 +203,3 @@ func newStorage(config Config, command *command.Commands, query *query.Queries,
 func (o *OPStorage) Health(ctx context.Context) error {
 	return o.repo.Health(ctx)
 }
-
-func getSupportedLanguages() ([]language.Tag, error) {
-	statikLoginFS, err := fs.NewWithNamespace("login")
-	if err != nil {
-		return nil, err
-	}
-	return i18n.SupportedLanguages(statikLoginFS)
-}