replace special chars in user names

pkg/cmd/generate/cluster.go

@@ -1,6 +1,9 @@
 package generate
 
 import (
+	"regexp"
+	"strings"
+
 	"github.com/kubesaw/ksctl/pkg/configuration"
 )
 
@@ -52,7 +55,7 @@ func ensureUsers(ctx *clusterContext, objsCache objectsCache) error {
 		m := &permissionsManager{
 			objectsCache:    objsCache,
 			createSubject:   ensureUserIdentityAndGroups(user.ID, user.Groups),
-			subjectBaseName: user.Name,
+			subjectBaseName: sanitizeUserName(user.Name),
 		}
 		// create the subject if explicitly requested (even if there is no specific permissions)
 		if user.AllClusters {
@@ -67,3 +70,13 @@ func ensureUsers(ctx *clusterContext, objsCache objectsCache) error {
 
 	return nil
 }
+
+var specialCharRegexp = regexp.MustCompile("[^A-Za-z0-9]")
+
+func sanitizeUserName(userName string) string {
+	sanitized := specialCharRegexp.ReplaceAllString(userName, "-")
+	for strings.Contains(sanitized, "--") {
+		sanitized = strings.ReplaceAll(sanitized, "--", "-")
+	}
+	return strings.Trim(sanitized, "-")
+}

pkg/cmd/generate/cluster_test.go

@@ -9,6 +9,7 @@ import (
 	"github.com/kubesaw/ksctl/pkg/assets"
 	"github.com/kubesaw/ksctl/pkg/configuration"
 	. "github.com/kubesaw/ksctl/pkg/test"
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
@@ -138,7 +139,7 @@ func TestUsers(t *testing.T) {
 					HostClusterRoleBindings("cluster-monitoring-view"),
 					MemberRoleBindings("toolchain-member-operator", Role("restart-deployment"), ClusterRole("view")),
 					MemberClusterRoleBindings("cluster-monitoring-view")),
-				User("alice-clusteradmin", []string{"12340"}, true, ""),
+				User("alice-@#$%^:+clusteradmin", []string{"12340"}, true, ""),
 			),
 		)
 
@@ -238,3 +239,14 @@ func newKubeSawAdminsWithDefaultClusters(serviceAccounts []assets.ServiceAccount
 		serviceAccounts,
 		users)
 }
+
+func TestSanitizeUserName(t *testing.T) {
+	assert.Equal(t, "special-name", sanitizeUserName("special-name"))
+	assert.Equal(t, "special-name", sanitizeUserName("special!@$#%^&*(+)name"))
+	assert.Equal(t, "special-name", sanitizeUserName("special---name"))
+	assert.Equal(t, "special-name", sanitizeUserName("special-$-%^-name"))
+	assert.Equal(t, "special-name", sanitizeUserName("special---name"))
+	assert.Equal(t, "special", sanitizeUserName("special-"))
+	assert.Equal(t, "name", sanitizeUserName("-name"))
+	assert.Equal(t, "special-name", sanitizeUserName("!@special-name*&+"))
+}