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fix.go
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fix.go
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package capabilities
import (
"fmt"
"github.com/elliotxx/kubeaudit/pkg/k8s"
v1 "k8s.io/api/core/v1"
)
type fixCapabilityAdded struct {
container *k8s.ContainerV1
capability string
}
func (f *fixCapabilityAdded) Plan() string {
return fmt.Sprintf("Remove capability '%s' from the capability add list in the container SecurityContext for container %s", f.capability, f.container.Name)
}
func (f *fixCapabilityAdded) Apply(resource k8s.Resource) []k8s.Resource {
removeCapabilityFromAddList(f.container, f.capability)
return nil
}
type fixCapabilityNotDroppedAll struct {
container *k8s.ContainerV1
capability string
}
func (f *fixCapabilityNotDroppedAll) Plan() string {
return fmt.Sprintf("Remove '%s' capability from drop list in the container SecurityContext for container %s", f.capability, f.container.Name)
}
func (f *fixCapabilityNotDroppedAll) Apply(resource k8s.Resource) []k8s.Resource {
dropCapabilityFromDropList(f.container, f.capability)
return nil
}
func dropCapabilityFromDropList(container *k8s.ContainerV1, capability string) {
if container.SecurityContext == nil {
container.SecurityContext = &k8s.SecurityContextV1{}
}
if container.SecurityContext.Capabilities == nil {
container.SecurityContext.Capabilities = &k8s.CapabilitiesV1{}
}
if container.SecurityContext.Capabilities.Drop == nil {
container.SecurityContext.Capabilities.Drop = []k8s.CapabilityV1{}
}
container.SecurityContext.Capabilities.Drop = []v1.Capability{"ALL"}
}
func removeCapabilityFromAddList(container *k8s.ContainerV1, capability string) {
added := container.SecurityContext.Capabilities.Add
for i, add := range added {
if string(add) == capability {
added = append(added[:i], added[i+1:]...)
break
}
}
container.SecurityContext.Capabilities.Add = added
}
type fixMissingSecurityContextOrCapability struct {
container *k8s.ContainerV1
}
func (f *fixMissingSecurityContextOrCapability) Plan() string {
return fmt.Sprintf("Adds security context and capabilities to %s. The capabilities Drop list is set to ALL.", f.container.Name)
}
func (f *fixMissingSecurityContextOrCapability) Apply(resource k8s.Resource) []k8s.Resource {
setDropToAll(f.container)
return nil
}
func setDropToAll(container *k8s.ContainerV1) {
if container.SecurityContext == nil {
container.SecurityContext = &k8s.SecurityContextV1{}
}
if container.SecurityContext.Capabilities == nil {
container.SecurityContext.Capabilities = &k8s.CapabilitiesV1{}
}
if container.SecurityContext.Capabilities.Drop == nil {
container.SecurityContext.Capabilities.Drop = []k8s.CapabilityV1{}
}
container.SecurityContext.Capabilities.Drop = []v1.Capability{"ALL"}
}