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solves the cronjob autogen nested path issue (#12383)

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* solves the cronjob autogen nested path issue

Signed-off-by: Mohd Kamaal <mohdkamaal2019@gmail.com>

* format the file using linter

Signed-off-by: Mohd Kamaal <mohdkamaal2019@gmail.com>

* autogen path change in validating-polcies

Signed-off-by: Mohd Kamaal <mohdcode@MBA.local>

---------

Signed-off-by: Mohd Kamaal <mohdkamaal2019@gmail.com>
Signed-off-by: Mohd Kamaal <mohdcode@MBA.local>
Co-authored-by: Mohd Kamaal <mohdcode@MBA.local>
This commit is contained in:
Mohd Kamaal 2025-03-13 19:52:51 +05:30 • committed by GitHub
parent 7e3dfd934e
commit 19b816ba70
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5 changed files with 121 additions and 67 deletions
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41
pkg/cel/autogen/rule.go
View file

@ -152,19 +152,6 @@ func convertMatchconditions(conditions []admissionregistrationv1.MatchCondition,
}
var (
podReplacementRules [][2][]byte = [][2][]byte{
{[]byte("object.spec"), []byte("object.spec.template.spec")},
{[]byte("oldObject.spec"), []byte("oldObject.spec.template.spec")},
{[]byte("object.metadata"), []byte("object.spec.template.metadata")},
{[]byte("oldObject.metadata"), []byte("oldObject.spec.template.metadata")},
}
cronJobReplacementRules [][2][]byte = [][2][]byte{
{[]byte("object.spec"), []byte("object.spec.jobTemplate.spec.template.spec")},
{[]byte("oldObject.spec"), []byte("oldObject.spec.jobTemplate.spec.template.spec")},
{[]byte("object.metadata"), []byte("object.spec.jobTemplate.spec.template.metadata")},
{[]byte("oldObject.metadata"), []byte("oldObject.spec.jobTemplate.spec.template.metadata")},
}
podControllerMatchConditionName = "autogen-"
podControllersMatchConditionExpression = "!(object.kind =='Deployment' || object.kind =='ReplicaSet' || object.kind =='StatefulSet' || object.kind =='DaemonSet') || "
cronjobMatchConditionName = "autogen-cronjobs-"
@ -172,15 +159,31 @@ var (
)
func updateFields(data []byte, resource autogencontroller) []byte {
// Define the target prefixes based on resource type
var specPrefix, metadataPrefix []byte
switch resource {
case PODS:
for _, replacement := range podReplacementRules {
data = bytes.ReplaceAll(data, replacement[0], replacement[1])
}
specPrefix = []byte("object.spec.template.spec")
metadataPrefix = []byte("object.spec.template.metadata")
case CRONJOBS:
for _, replacement := range cronJobReplacementRules {
data = bytes.ReplaceAll(data, replacement[0], replacement[1])
}
specPrefix = []byte("object.spec.jobTemplate.spec.template.spec")
metadataPrefix = []byte("object.spec.jobTemplate.spec.template.metadata")
}
// Replace object.spec and oldObject.spec with the correct prefix
data = bytes.ReplaceAll(data, []byte("object.spec"), specPrefix)
data = bytes.ReplaceAll(data, []byte("oldObject.spec"), append([]byte("oldObject"), specPrefix[6:]...)) // Adjust for oldObject
data = bytes.ReplaceAll(data, []byte("object.metadata"), metadataPrefix)
data = bytes.ReplaceAll(data, []byte("oldObject.metadata"), append([]byte("oldObject"), metadataPrefix[6:]...))
// Normalize any over-nested paths remove extra .template.spec
if resource == CRONJOBS {
data = bytes.ReplaceAll(data, []byte("object.spec.jobTemplate.spec.template.spec.template.spec"), specPrefix)
data = bytes.ReplaceAll(data, []byte("oldObject.spec.jobTemplate.spec.template.spec.template.spec"), append([]byte("oldObject"), specPrefix[6:]...))
} else if resource == PODS {
data = bytes.ReplaceAll(data, []byte("object.spec.template.spec.template.spec"), specPrefix)
data = bytes.ReplaceAll(data, []byte("oldObject.spec.template.spec.template.spec"), append([]byte("oldObject"), specPrefix[6:]...))
}
return data
}

26
test/conformance/chainsaw/validating-policies/autogen/autogen-deployments-cronjobs/bad-deployment.yaml
View file

@ -22,3 +22,29 @@ spec:
image: nginx:latest
securityContext:
allowPrivilegeEscalation: true
---
---
apiVersion: batch/v1
kind: CronJob
metadata:
name: bad-cronjob
spec:
schedule: "*/5 * * * *"
concurrencyPolicy: Forbid
jobTemplate:
metadata:
labels:
prod: "true"
spec:
template:
metadata:
labels:
prod: "true"
spec:
containers:
- name: secure-container
image: busybox
command: ["echo", "Hello, world"]
securityContext:
allowPrivilegeEscalation: true
restartPolicy: OnFailure

95
test/conformance/chainsaw/validating-policies/autogen/autogen-deployments-cronjobs/check-autogen.yaml
View file

@ -1,51 +1,52 @@
apiVersion: policies.kyverno.io/v1alpha1
kind: ValidatingPolicy
metadata:
name: disallow-privilege-escalation
name: disallow-privilege-escalation
status:
autogen:
rules:
- matchConditions:
- expression: "!(object.kind =='Deployment' || object.kind =='ReplicaSet' || object.kind =='StatefulSet' || object.kind =='DaemonSet') || has(object.spec.template.metadata.labels) && has(object.spec.template.metadata.labels.prod)
&& object.spec.template.metadata.labels.prod == 'true'"
name: autogen-check-prod-label
matchConstraints:
resourceRules:
- apiGroups:
- apps
apiVersions:
- v1
operations:
- CREATE
- UPDATE
resources:
- deployments
validations:
- expression: object.spec.template.spec.containers.all(container, has(container.securityContext)
&& has(container.securityContext.allowPrivilegeEscalation) && container.securityContext.allowPrivilegeEscalation
== false)
message: Privilege escalation is disallowed. The field spec.containers[*].securityContext.allowPrivilegeEscalation
must be set to `false`.
- matchConditions:
- expression: "!(object.kind =='CronJob') || has(object.spec.jobTemplate.spec.template.metadata.labels)
&& has(object.spec.jobTemplate.spec.template.metadata.labels.prod)
&& object.spec.jobTemplate.spec.template.metadata.labels.prod
== 'true'"
name: autogen-cronjobs-check-prod-label
matchConstraints:
resourceRules:
- apiGroups:
- batch
apiVersions:
- v1
operations:
- CREATE
- UPDATE
resources:
- cronjobs
validations:
- expression: object.spec.jobTemplate.spec.template.spec.template.spec.containers.all(container,
has(container.securityContext) && has(container.securityContext.allowPrivilegeEscalation)
&& container.securityContext.allowPrivilegeEscalation == false)
message: Privilege escalation is disallowed. The field spec.containers[*].securityContext.allowPrivilegeEscalation
must be set to `false`.
autogen:
rules:
- matchConditions:
- expression: '!(object.kind ==''Deployment'' || object.kind ==''ReplicaSet''
|| object.kind ==''StatefulSet'' || object.kind ==''DaemonSet'') || has(object.spec.template.metadata.labels)
&& has(object.spec.template.metadata.labels.prod) && object.spec.template.metadata.labels.prod
== ''true'''
name: autogen-check-prod-label
matchConstraints:
resourceRules:
- apiGroups:
- apps
apiVersions:
- v1
operations:
- CREATE
- UPDATE
resources:
- deployments
validations:
- expression: object.spec.template.spec.containers.all(container, has(container.securityContext)
&& has(container.securityContext.allowPrivilegeEscalation) && container.securityContext.allowPrivilegeEscalation
== false)
message: Privilege escalation is disallowed. The field spec.containers[*].securityContext.allowPrivilegeEscalation
must be set to `false`.
- matchConditions:
- expression: '!(object.kind ==''CronJob'') || has(object.spec.jobTemplate.spec.template.metadata.labels)
&& has(object.spec.jobTemplate.spec.template.metadata.labels.prod) &&
object.spec.jobTemplate.spec.template.metadata.labels.prod == ''true'''
name: autogen-cronjobs-check-prod-label
matchConstraints:
resourceRules:
- apiGroups:
- batch
apiVersions:
- v1
operations:
- CREATE
- UPDATE
resources:
- cronjobs
validations:
- expression: object.spec.jobTemplate.spec.template.spec.containers.all(container,
has(container.securityContext) && has(container.securityContext.allowPrivilegeEscalation)
&& container.securityContext.allowPrivilegeEscalation == false)
message: Privilege escalation is disallowed. The field spec.containers[*].securityContext.allowPrivilegeEscalation
must be set to `false`.

24
test/conformance/chainsaw/validating-policies/autogen/autogen-deployments-cronjobs/good-deployment.yaml
View file

@ -22,3 +22,27 @@ spec:
image: nginx:latest
securityContext:
allowPrivilegeEscalation: false
---
apiVersion: batch/v1
kind: CronJob
metadata:
name: good-cronjob
spec:
schedule: "*/5 * * * *"
jobTemplate:
metadata:
labels:
prod: "true"
spec:
template:
metadata:
labels:
prod: "true"
spec:
containers:
- name: secure-container
image: busybox
command: ["echo", "Hello, world"]
securityContext:
allowPrivilegeEscalation: false
restartPolicy: OnFailure

2
test/conformance/chainsaw/validating-policies/autogen/should-autogen/check-autogen.yaml
View file

@ -56,7 +56,7 @@ status:
resources:
- cronjobs
validations:
- expression: object.spec.jobTemplate.spec.template.spec.template.spec.containers.all(container,
- expression: object.spec.jobTemplate.spec.template.spec.containers.all(container,
has(container.securityContext) && has(container.securityContext.allowPrivilegeEscalation)
&& container.securityContext.allowPrivilegeEscalation == false)
message: Privilege escalation is disallowed. The field spec.containers[*].securityContext.allowPrivilegeEscalation