mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-25 07:40:19 +00:00
92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
|
/*
|
||
|
|
Copyright 2021 The Kubernetes Authors.
|
||
|
|
|
||
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
you may not use this file except in compliance with the License.
|
||
|
|
You may obtain a copy of the License at
|
||
|
|
|
||
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
|
||
|
|
Unless required by applicable law or agreed to in writing, software
|
||
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
See the License for the specific language governing permissions and
|
||
|
|
limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
package policy
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"strconv"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
corev1 "k8s.io/api/core/v1"
|
||
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
||
|
|
"k8s.io/pod-security-admission/api"
|
||
|
|
)
|
||
|
|
|
||
|
|
/*
|
||
|
|
HostPort ports must be forbidden.
|
||
|
|
|
||
|
|
**Restricted Fields:**
|
||
|
|
|
||
|
|
spec.containers[*].ports[*].hostPort
|
||
|
|
spec.initContainers[*].ports[*].hostPort
|
||
|
|
|
||
|
|
**Allowed Values:** undefined/0
|
||
|
|
*/
|
||
|
|
|
||
|
|
func init() {
|
||
|
|
addCheck(CheckHostPorts)
|
||
|
|
}
|
||
|
|
|
||
|
|
// CheckHostPorts returns a baseline level check
|
||
|
|
// that forbids any host ports in 1.0+
|
||
|
|
func CheckHostPorts() Check {
|
||
|
|
return Check{
|
||
|
|
ID: "hostPorts",
|
||
|
|
Level: api.LevelBaseline,
|
||
|
|
Versions: []VersionedCheck{
|
||
|
|
{
|
||
|
|
MinimumVersion: api.MajorMinorVersion(1, 0),
|
||
|
|
CheckPod: hostPorts_1_0,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func hostPorts_1_0(podMetadata *metav1.ObjectMeta, podSpec *corev1.PodSpec) CheckResult {
|
||
|
|
var badContainers []string
|
||
|
|
forbiddenHostPorts := sets.NewString()
|
||
|
|
visitContainers(podSpec, func(container *corev1.Container) {
|
||
|
|
valid := true
|
||
|
|
for _, c := range container.Ports {
|
||
|
|
if c.HostPort != 0 {
|
||
|
|
valid = false
|
||
|
|
forbiddenHostPorts.Insert(strconv.Itoa(int(c.HostPort)))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if !valid {
|
||
|
|
badContainers = append(badContainers, container.Name)
|
||
|
|
}
|
||
|
|
})
|
||
|
|
|
||
|
|
if len(badContainers) > 0 {
|
||
|
|
return CheckResult{
|
||
|
|
Allowed: false,
|
||
|
|
ForbiddenReason: "hostPort",
|
||
|
|
ForbiddenDetail: fmt.Sprintf(
|
||
|
|
"%s %s %s %s %s",
|
||
|
|
pluralize("container", "containers", len(badContainers)),
|
||
|
|
joinQuote(badContainers),
|
||
|
|
pluralize("uses", "use", len(badContainers)),
|
||
|
|
pluralize("hostPort", "hostPorts", len(forbiddenHostPorts)),
|
||
|
|
strings.Join(forbiddenHostPorts.List(), ", "),
|
||
|
|
),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return CheckResult{Allowed: true}
|
||
|
|
}
|