fix(more resources): fix porting and functionality [r8s-103] (#8)

Co-authored-by: testA113 <aliharriss1995@gmail.com>
Co-authored-by: Anthony Lapenna <anthony.lapenna@portainer.io>
Co-authored-by: Ali <83188384+testA113@users.noreply.github.com>

api/kubernetes/cli/cluster_role_binding.go

@@ -3,9 +3,13 @@ package cli
 import (
 	"context"
 	"errors"
+	"strings"
 
 	models "github.com/portainer/portainer/api/http/models/kubernetes"
+	"github.com/portainer/portainer/api/internal/errorlist"
+	"github.com/rs/zerolog/log"
 	rbacv1 "k8s.io/api/rbac/v1"
+	k8serrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
@@ -38,8 +42,70 @@ func (kcl *KubeClient) fetchClusterRoleBindings() ([]models.K8sClusterRoleBindin
 func parseClusterRoleBinding(clusterRoleBinding rbacv1.ClusterRoleBinding) models.K8sClusterRoleBinding {
 	return models.K8sClusterRoleBinding{
 		Name:         clusterRoleBinding.Name,
+		UID:          clusterRoleBinding.UID,
+		Namespace:    clusterRoleBinding.Namespace,
 		RoleRef:      clusterRoleBinding.RoleRef,
 		Subjects:     clusterRoleBinding.Subjects,
 		CreationDate: clusterRoleBinding.CreationTimestamp.Time,
+		IsSystem:     isSystemClusterRoleBinding(&clusterRoleBinding),
 	}
 }
+
+// DeleteClusterRoleBindings processes a K8sClusterRoleBindingDeleteRequest
+// by deleting each cluster role binding in its given namespace. If deleting a specific cluster role binding
+// fails, the error is logged and we continue to delete the remaining cluster role bindings.
+func (kcl *KubeClient) DeleteClusterRoleBindings(reqs models.K8sClusterRoleBindingDeleteRequests) error {
+	var errors []error
+
+	for _, name := range reqs {
+		client := kcl.cli.RbacV1().ClusterRoleBindings()
+
+		clusterRoleBinding, err := client.Get(context.Background(), name, metav1.GetOptions{})
+		if err != nil {
+			if k8serrors.IsNotFound(err) {
+				continue
+			}
+
+			// This is a more serious error to do with the client so we return right away
+			return err
+		}
+
+		if isSystemClusterRoleBinding(clusterRoleBinding) {
+			log.Warn().Str("role_name", name).Msg("ignoring delete of 'system' cluster role binding, not allowed")
+		}
+
+		if err := client.Delete(context.Background(), name, metav1.DeleteOptions{}); err != nil {
+			log.Err(err).Str("role_name", name).Msg("unable to delete the cluster role binding")
+			errors = append(errors, err)
+		}
+	}
+
+	return errorlist.Combine(errors)
+}
+
+func isSystemClusterRoleBinding(binding *rbacv1.ClusterRoleBinding) bool {
+	if strings.HasPrefix(binding.Name, "system:") {
+		return true
+	}
+
+	if binding.Labels != nil {
+		if binding.Labels["kubernetes.io/bootstrapping"] == "rbac-defaults" {
+			return true
+		}
+	}
+
+	for _, sub := range binding.Subjects {
+		if strings.HasPrefix(sub.Name, "system:") {
+			return true
+		}
+
+		if sub.Namespace == "kube-system" ||
+			sub.Namespace == "kube-public" ||
+			sub.Namespace == "kube-node-lease" ||
+			sub.Namespace == "portainer" {
+			return true
+		}
+	}
+
+	return false
+}