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828 lines
37 KiB
Go
828 lines
37 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package validation
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import (
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"fmt"
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"net"
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"reflect"
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"regexp"
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"strconv"
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"strings"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/unversioned"
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unversionedvalidation "k8s.io/kubernetes/pkg/api/unversioned/validation"
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apivalidation "k8s.io/kubernetes/pkg/api/validation"
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"k8s.io/kubernetes/pkg/apis/extensions"
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"k8s.io/kubernetes/pkg/labels"
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"k8s.io/kubernetes/pkg/security/apparmor"
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psputil "k8s.io/kubernetes/pkg/security/podsecuritypolicy/util"
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"k8s.io/kubernetes/pkg/util/intstr"
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"k8s.io/kubernetes/pkg/util/sets"
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"k8s.io/kubernetes/pkg/util/validation"
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"k8s.io/kubernetes/pkg/util/validation/field"
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)
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func ValidateThirdPartyResourceUpdate(update, old *extensions.ThirdPartyResource) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&update.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))...)
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allErrs = append(allErrs, ValidateThirdPartyResource(update)...)
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return allErrs
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}
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func ValidateThirdPartyResourceName(name string, prefix bool) []string {
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// Make sure it's a valid DNS subdomain
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if msgs := apivalidation.NameIsDNSSubdomain(name, prefix); len(msgs) != 0 {
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return msgs
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}
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// Make sure it's at least three segments (kind + two-segment group name)
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if !prefix {
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parts := strings.Split(name, ".")
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if len(parts) < 3 {
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return []string{"must be at least three segments long: <kind>.<domain>.<tld>"}
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}
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}
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return nil
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}
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func ValidateThirdPartyResource(obj *extensions.ThirdPartyResource) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&obj.ObjectMeta, false, ValidateThirdPartyResourceName, field.NewPath("metadata"))...)
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versions := sets.String{}
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for ix := range obj.Versions {
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version := &obj.Versions[ix]
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if len(version.Name) == 0 {
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allErrs = append(allErrs, field.Invalid(field.NewPath("versions").Index(ix).Child("name"), version, "must not be empty"))
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} else {
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for _, msg := range validation.IsDNS1123Label(version.Name) {
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allErrs = append(allErrs, field.Invalid(field.NewPath("versions").Index(ix).Child("name"), version, msg))
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}
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}
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if versions.Has(version.Name) {
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allErrs = append(allErrs, field.Duplicate(field.NewPath("versions").Index(ix).Child("name"), version))
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}
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versions.Insert(version.Name)
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}
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return allErrs
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}
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// ValidateDaemonSet tests if required fields in the DaemonSet are set.
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func ValidateDaemonSet(ds *extensions.DaemonSet) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMeta(&ds.ObjectMeta, true, ValidateDaemonSetName, field.NewPath("metadata"))
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allErrs = append(allErrs, ValidateDaemonSetSpec(&ds.Spec, field.NewPath("spec"))...)
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return allErrs
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}
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// ValidateDaemonSetUpdate tests if required fields in the DaemonSet are set.
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func ValidateDaemonSetUpdate(ds, oldDS *extensions.DaemonSet) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMetaUpdate(&ds.ObjectMeta, &oldDS.ObjectMeta, field.NewPath("metadata"))
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allErrs = append(allErrs, ValidateDaemonSetSpec(&ds.Spec, field.NewPath("spec"))...)
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return allErrs
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}
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// validateDaemonSetStatus validates a DaemonSetStatus
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func validateDaemonSetStatus(status *extensions.DaemonSetStatus, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.CurrentNumberScheduled), fldPath.Child("currentNumberScheduled"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.NumberMisscheduled), fldPath.Child("numberMisscheduled"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.DesiredNumberScheduled), fldPath.Child("desiredNumberScheduled"))...)
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return allErrs
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}
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// ValidateDaemonSetStatus validates tests if required fields in the DaemonSet Status section
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func ValidateDaemonSetStatusUpdate(ds, oldDS *extensions.DaemonSet) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMetaUpdate(&ds.ObjectMeta, &oldDS.ObjectMeta, field.NewPath("metadata"))
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allErrs = append(allErrs, validateDaemonSetStatus(&ds.Status, field.NewPath("status"))...)
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return allErrs
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}
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// ValidateDaemonSetSpec tests if required fields in the DaemonSetSpec are set.
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func ValidateDaemonSetSpec(spec *extensions.DaemonSetSpec, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(spec.Selector, fldPath.Child("selector"))...)
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selector, err := unversioned.LabelSelectorAsSelector(spec.Selector)
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if err == nil && !selector.Matches(labels.Set(spec.Template.Labels)) {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("template", "metadata", "labels"), spec.Template.Labels, "`selector` does not match template `labels`"))
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}
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if spec.Selector != nil && len(spec.Selector.MatchLabels)+len(spec.Selector.MatchExpressions) == 0 {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("selector"), spec.Selector, "empty selector is not valid for daemonset."))
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}
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allErrs = append(allErrs, apivalidation.ValidatePodTemplateSpec(&spec.Template, fldPath.Child("template"))...)
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// Daemons typically run on more than one node, so mark Read-Write persistent disks as invalid.
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allErrs = append(allErrs, apivalidation.ValidateReadOnlyPersistentDisks(spec.Template.Spec.Volumes, fldPath.Child("template", "spec", "volumes"))...)
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// RestartPolicy has already been first-order validated as per ValidatePodTemplateSpec().
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if spec.Template.Spec.RestartPolicy != api.RestartPolicyAlways {
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allErrs = append(allErrs, field.NotSupported(fldPath.Child("template", "spec", "restartPolicy"), spec.Template.Spec.RestartPolicy, []string{string(api.RestartPolicyAlways)}))
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}
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return allErrs
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}
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// ValidateDaemonSetName can be used to check whether the given daemon set name is valid.
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// Prefix indicates this name will be used as part of generation, in which case
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// trailing dashes are allowed.
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var ValidateDaemonSetName = apivalidation.NameIsDNSSubdomain
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// Validates that the given name can be used as a deployment name.
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var ValidateDeploymentName = apivalidation.NameIsDNSSubdomain
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func ValidatePositiveIntOrPercent(intOrPercent intstr.IntOrString, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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switch intOrPercent.Type {
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case intstr.String:
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for _, msg := range validation.IsValidPercent(intOrPercent.StrVal) {
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allErrs = append(allErrs, field.Invalid(fldPath, intOrPercent, msg))
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}
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case intstr.Int:
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(intOrPercent.IntValue()), fldPath)...)
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default:
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allErrs = append(allErrs, field.Invalid(fldPath, intOrPercent, "must be an integer or percentage (e.g '5%%')"))
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}
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return allErrs
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}
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func getPercentValue(intOrStringValue intstr.IntOrString) (int, bool) {
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if intOrStringValue.Type != intstr.String {
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return 0, false
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}
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if len(validation.IsValidPercent(intOrStringValue.StrVal)) != 0 {
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return 0, false
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}
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value, _ := strconv.Atoi(intOrStringValue.StrVal[:len(intOrStringValue.StrVal)-1])
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return value, true
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}
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func getIntOrPercentValue(intOrStringValue intstr.IntOrString) int {
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value, isPercent := getPercentValue(intOrStringValue)
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if isPercent {
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return value
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}
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return intOrStringValue.IntValue()
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}
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func IsNotMoreThan100Percent(intOrStringValue intstr.IntOrString, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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value, isPercent := getPercentValue(intOrStringValue)
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if !isPercent || value <= 100 {
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return nil
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}
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allErrs = append(allErrs, field.Invalid(fldPath, intOrStringValue, "must not be greater than 100%"))
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return allErrs
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}
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func ValidateRollingUpdateDeployment(rollingUpdate *extensions.RollingUpdateDeployment, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, ValidatePositiveIntOrPercent(rollingUpdate.MaxUnavailable, fldPath.Child("maxUnavailable"))...)
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allErrs = append(allErrs, ValidatePositiveIntOrPercent(rollingUpdate.MaxSurge, fldPath.Child("maxSurge"))...)
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if getIntOrPercentValue(rollingUpdate.MaxUnavailable) == 0 && getIntOrPercentValue(rollingUpdate.MaxSurge) == 0 {
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// Both MaxSurge and MaxUnavailable cannot be zero.
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allErrs = append(allErrs, field.Invalid(fldPath.Child("maxUnavailable"), rollingUpdate.MaxUnavailable, "may not be 0 when `maxSurge` is 0"))
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}
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// Validate that MaxUnavailable is not more than 100%.
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allErrs = append(allErrs, IsNotMoreThan100Percent(rollingUpdate.MaxUnavailable, fldPath.Child("maxUnavailable"))...)
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return allErrs
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}
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func ValidateDeploymentStrategy(strategy *extensions.DeploymentStrategy, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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switch strategy.Type {
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case extensions.RecreateDeploymentStrategyType:
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if strategy.RollingUpdate != nil {
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allErrs = append(allErrs, field.Forbidden(fldPath.Child("rollingUpdate"), "may not be specified when strategy `type` is '"+string(extensions.RecreateDeploymentStrategyType+"'")))
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}
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case extensions.RollingUpdateDeploymentStrategyType:
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// This should never happen since it's set and checked in defaults.go
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if strategy.RollingUpdate == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("rollingUpdate"), "this should be defaulted and never be nil"))
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} else {
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allErrs = append(allErrs, ValidateRollingUpdateDeployment(strategy.RollingUpdate, fldPath.Child("rollingUpdate"))...)
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}
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default:
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validValues := []string{string(extensions.RecreateDeploymentStrategyType), string(extensions.RollingUpdateDeploymentStrategyType)}
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allErrs = append(allErrs, field.NotSupported(fldPath, strategy, validValues))
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}
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return allErrs
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}
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func ValidateRollback(rollback *extensions.RollbackConfig, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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v := rollback.Revision
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(v), fldPath.Child("version"))...)
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return allErrs
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}
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// Validates given deployment spec.
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func ValidateDeploymentSpec(spec *extensions.DeploymentSpec, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(spec.Replicas), fldPath.Child("replicas"))...)
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if spec.Selector == nil {
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allErrs = append(allErrs, field.Required(fldPath.Child("selector"), ""))
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} else {
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allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(spec.Selector, fldPath.Child("selector"))...)
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if len(spec.Selector.MatchLabels)+len(spec.Selector.MatchExpressions) == 0 {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("selector"), spec.Selector, "empty selector is not valid for deployment."))
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}
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}
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selector, err := unversioned.LabelSelectorAsSelector(spec.Selector)
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if err != nil {
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allErrs = append(allErrs, field.Invalid(fldPath.Child("selector"), spec.Selector, "invalid label selector."))
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} else {
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allErrs = append(allErrs, ValidatePodTemplateSpecForReplicaSet(&spec.Template, selector, spec.Replicas, fldPath.Child("template"))...)
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}
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allErrs = append(allErrs, ValidateDeploymentStrategy(&spec.Strategy, fldPath.Child("strategy"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(spec.MinReadySeconds), fldPath.Child("minReadySeconds"))...)
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if spec.RevisionHistoryLimit != nil {
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// zero is a valid RevisionHistoryLimit
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(*spec.RevisionHistoryLimit), fldPath.Child("revisionHistoryLimit"))...)
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}
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if spec.RollbackTo != nil {
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allErrs = append(allErrs, ValidateRollback(spec.RollbackTo, fldPath.Child("rollback"))...)
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}
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return allErrs
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}
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// Validates given deployment status.
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func ValidateDeploymentStatus(status *extensions.DeploymentStatus, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(status.ObservedGeneration, fldPath.Child("observedGeneration"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.Replicas), fldPath.Child("replicas"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.UpdatedReplicas), fldPath.Child("updatedReplicas"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.AvailableReplicas), fldPath.Child("availableReplicas"))...)
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allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(status.UnavailableReplicas), fldPath.Child("unavailableReplicas"))...)
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return allErrs
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}
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func ValidateDeploymentUpdate(update, old *extensions.Deployment) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMetaUpdate(&update.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))
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allErrs = append(allErrs, ValidateDeploymentSpec(&update.Spec, field.NewPath("spec"))...)
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return allErrs
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}
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func ValidateDeploymentStatusUpdate(update, old *extensions.Deployment) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMetaUpdate(&update.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))
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allErrs = append(allErrs, ValidateDeploymentStatus(&update.Status, field.NewPath("status"))...)
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return allErrs
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}
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func ValidateDeployment(obj *extensions.Deployment) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMeta(&obj.ObjectMeta, true, ValidateDeploymentName, field.NewPath("metadata"))
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allErrs = append(allErrs, ValidateDeploymentSpec(&obj.Spec, field.NewPath("spec"))...)
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return allErrs
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}
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func ValidateDeploymentRollback(obj *extensions.DeploymentRollback) field.ErrorList {
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allErrs := apivalidation.ValidateAnnotations(obj.UpdatedAnnotations, field.NewPath("updatedAnnotations"))
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if len(obj.Name) == 0 {
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allErrs = append(allErrs, field.Required(field.NewPath("name"), "name is required"))
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}
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allErrs = append(allErrs, ValidateRollback(&obj.RollbackTo, field.NewPath("rollback"))...)
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return allErrs
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}
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func ValidateThirdPartyResourceDataUpdate(update, old *extensions.ThirdPartyResourceData) field.ErrorList {
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return apivalidation.ValidateObjectMetaUpdate(&update.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))
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}
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func ValidateThirdPartyResourceData(obj *extensions.ThirdPartyResourceData) field.ErrorList {
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return apivalidation.ValidateObjectMeta(&obj.ObjectMeta, true, apivalidation.NameIsDNSLabel, field.NewPath("metadata"))
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}
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// ValidateIngress tests if required fields in the Ingress are set.
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func ValidateIngress(ingress *extensions.Ingress) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMeta(&ingress.ObjectMeta, true, ValidateIngressName, field.NewPath("metadata"))
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allErrs = append(allErrs, ValidateIngressSpec(&ingress.Spec, field.NewPath("spec"))...)
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return allErrs
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}
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// ValidateIngressName validates that the given name can be used as an Ingress name.
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var ValidateIngressName = apivalidation.NameIsDNSSubdomain
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func validateIngressTLS(spec *extensions.IngressSpec, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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// TODO: Perform a more thorough validation of spec.TLS.Hosts that takes
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// the wildcard spec from RFC 6125 into account.
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for _, itls := range spec.TLS {
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for i, host := range itls.Hosts {
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if strings.Contains(host, "*") {
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for _, msg := range validation.IsWildcardDNS1123Subdomain(host) {
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allErrs = append(allErrs, field.Invalid(fldPath.Index(i).Child("hosts"), host, msg))
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}
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continue
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}
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for _, msg := range validation.IsDNS1123Subdomain(host) {
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allErrs = append(allErrs, field.Invalid(fldPath.Index(i).Child("hosts"), host, msg))
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}
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}
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}
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return allErrs
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}
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// ValidateIngressSpec tests if required fields in the IngressSpec are set.
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func ValidateIngressSpec(spec *extensions.IngressSpec, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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// TODO: Is a default backend mandatory?
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if spec.Backend != nil {
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allErrs = append(allErrs, validateIngressBackend(spec.Backend, fldPath.Child("backend"))...)
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} else if len(spec.Rules) == 0 {
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allErrs = append(allErrs, field.Invalid(fldPath, spec.Rules, "either `backend` or `rules` must be specified"))
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}
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if len(spec.Rules) > 0 {
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allErrs = append(allErrs, validateIngressRules(spec.Rules, fldPath.Child("rules"))...)
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}
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if len(spec.TLS) > 0 {
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allErrs = append(allErrs, validateIngressTLS(spec, fldPath.Child("tls"))...)
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}
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return allErrs
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}
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// ValidateIngressUpdate tests if required fields in the Ingress are set.
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func ValidateIngressUpdate(ingress, oldIngress *extensions.Ingress) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMetaUpdate(&ingress.ObjectMeta, &oldIngress.ObjectMeta, field.NewPath("metadata"))
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allErrs = append(allErrs, ValidateIngressSpec(&ingress.Spec, field.NewPath("spec"))...)
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return allErrs
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}
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// ValidateIngressStatusUpdate tests if required fields in the Ingress are set when updating status.
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func ValidateIngressStatusUpdate(ingress, oldIngress *extensions.Ingress) field.ErrorList {
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allErrs := apivalidation.ValidateObjectMetaUpdate(&ingress.ObjectMeta, &oldIngress.ObjectMeta, field.NewPath("metadata"))
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allErrs = append(allErrs, apivalidation.ValidateLoadBalancerStatus(&ingress.Status.LoadBalancer, field.NewPath("status", "loadBalancer"))...)
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return allErrs
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}
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func validateIngressRules(ingressRules []extensions.IngressRule, fldPath *field.Path) field.ErrorList {
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allErrs := field.ErrorList{}
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if len(ingressRules) == 0 {
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return append(allErrs, field.Required(fldPath, ""))
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}
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for i, ih := range ingressRules {
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if len(ih.Host) > 0 {
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if isIP := (net.ParseIP(ih.Host) != nil); isIP {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Index(i).Child("host"), ih.Host, "must be a DNS name, not an IP address"))
|
|
}
|
|
// TODO: Ports and ips are allowed in the host part of a url
|
|
// according to RFC 3986, consider allowing them.
|
|
if strings.Contains(ih.Host, "*") {
|
|
for _, msg := range validation.IsWildcardDNS1123Subdomain(ih.Host) {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Index(i).Child("host"), ih.Host, msg))
|
|
}
|
|
continue
|
|
}
|
|
for _, msg := range validation.IsDNS1123Subdomain(ih.Host) {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Index(i).Child("host"), ih.Host, msg))
|
|
}
|
|
}
|
|
allErrs = append(allErrs, validateIngressRuleValue(&ih.IngressRuleValue, fldPath.Index(0))...)
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
func validateIngressRuleValue(ingressRule *extensions.IngressRuleValue, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
if ingressRule.HTTP != nil {
|
|
allErrs = append(allErrs, validateHTTPIngressRuleValue(ingressRule.HTTP, fldPath.Child("http"))...)
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
func validateHTTPIngressRuleValue(httpIngressRuleValue *extensions.HTTPIngressRuleValue, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
if len(httpIngressRuleValue.Paths) == 0 {
|
|
allErrs = append(allErrs, field.Required(fldPath.Child("paths"), ""))
|
|
}
|
|
for i, rule := range httpIngressRuleValue.Paths {
|
|
if len(rule.Path) > 0 {
|
|
if !strings.HasPrefix(rule.Path, "/") {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("paths").Index(i).Child("path"), rule.Path, "must be an absolute path"))
|
|
}
|
|
// TODO: More draconian path regex validation.
|
|
// Path must be a valid regex. This is the basic requirement.
|
|
// In addition to this any characters not allowed in a path per
|
|
// RFC 3986 section-3.3 cannot appear as a literal in the regex.
|
|
// Consider the example: http://host/valid?#bar, everything after
|
|
// the last '/' is a valid regex that matches valid#bar, which
|
|
// isn't a valid path, because the path terminates at the first ?
|
|
// or #. A more sophisticated form of validation would detect that
|
|
// the user is confusing url regexes with path regexes.
|
|
_, err := regexp.CompilePOSIX(rule.Path)
|
|
if err != nil {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("paths").Index(i).Child("path"), rule.Path, "must be a valid regex"))
|
|
}
|
|
}
|
|
allErrs = append(allErrs, validateIngressBackend(&rule.Backend, fldPath.Child("backend"))...)
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
// validateIngressBackend tests if a given backend is valid.
|
|
func validateIngressBackend(backend *extensions.IngressBackend, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
// All backends must reference a single local service by name, and a single service port by name or number.
|
|
if len(backend.ServiceName) == 0 {
|
|
return append(allErrs, field.Required(fldPath.Child("serviceName"), ""))
|
|
} else {
|
|
for _, msg := range apivalidation.ValidateServiceName(backend.ServiceName, false) {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("serviceName"), backend.ServiceName, msg))
|
|
}
|
|
}
|
|
allErrs = append(allErrs, apivalidation.ValidatePortNumOrName(backend.ServicePort, fldPath.Child("servicePort"))...)
|
|
return allErrs
|
|
}
|
|
|
|
func ValidateScale(scale *extensions.Scale) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&scale.ObjectMeta, true, apivalidation.NameIsDNSSubdomain, field.NewPath("metadata"))...)
|
|
|
|
if scale.Spec.Replicas < 0 {
|
|
allErrs = append(allErrs, field.Invalid(field.NewPath("spec", "replicas"), scale.Spec.Replicas, "must be greater than or equal to 0"))
|
|
}
|
|
|
|
return allErrs
|
|
}
|
|
|
|
// ValidateReplicaSetName can be used to check whether the given ReplicaSet
|
|
// name is valid.
|
|
// Prefix indicates this name will be used as part of generation, in which case
|
|
// trailing dashes are allowed.
|
|
var ValidateReplicaSetName = apivalidation.NameIsDNSSubdomain
|
|
|
|
// ValidateReplicaSet tests if required fields in the ReplicaSet are set.
|
|
func ValidateReplicaSet(rs *extensions.ReplicaSet) field.ErrorList {
|
|
allErrs := apivalidation.ValidateObjectMeta(&rs.ObjectMeta, true, ValidateReplicaSetName, field.NewPath("metadata"))
|
|
allErrs = append(allErrs, ValidateReplicaSetSpec(&rs.Spec, field.NewPath("spec"))...)
|
|
return allErrs
|
|
}
|
|
|
|
// ValidateReplicaSetUpdate tests if required fields in the ReplicaSet are set.
|
|
func ValidateReplicaSetUpdate(rs, oldRs *extensions.ReplicaSet) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&rs.ObjectMeta, &oldRs.ObjectMeta, field.NewPath("metadata"))...)
|
|
allErrs = append(allErrs, ValidateReplicaSetSpec(&rs.Spec, field.NewPath("spec"))...)
|
|
return allErrs
|
|
}
|
|
|
|
// ValidateReplicaSetStatusUpdate tests if required fields in the ReplicaSet are set.
|
|
func ValidateReplicaSetStatusUpdate(rs, oldRs *extensions.ReplicaSet) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&rs.ObjectMeta, &oldRs.ObjectMeta, field.NewPath("metadata"))...)
|
|
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(rs.Status.Replicas), field.NewPath("status", "replicas"))...)
|
|
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(rs.Status.FullyLabeledReplicas), field.NewPath("status", "fullyLabeledReplicas"))...)
|
|
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(rs.Status.ReadyReplicas), field.NewPath("status", "readyReplicas"))...)
|
|
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(rs.Status.AvailableReplicas), field.NewPath("status", "availableReplicas"))...)
|
|
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(rs.Status.ObservedGeneration), field.NewPath("status", "observedGeneration"))...)
|
|
return allErrs
|
|
}
|
|
|
|
// ValidateReplicaSetSpec tests if required fields in the ReplicaSet spec are set.
|
|
func ValidateReplicaSetSpec(spec *extensions.ReplicaSetSpec, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(spec.Replicas), fldPath.Child("replicas"))...)
|
|
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(spec.MinReadySeconds), fldPath.Child("minReadySeconds"))...)
|
|
|
|
if spec.Selector == nil {
|
|
allErrs = append(allErrs, field.Required(fldPath.Child("selector"), ""))
|
|
} else {
|
|
allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(spec.Selector, fldPath.Child("selector"))...)
|
|
if len(spec.Selector.MatchLabels)+len(spec.Selector.MatchExpressions) == 0 {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("selector"), spec.Selector, "empty selector is not valid for deployment."))
|
|
}
|
|
}
|
|
|
|
selector, err := unversioned.LabelSelectorAsSelector(spec.Selector)
|
|
if err != nil {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("selector"), spec.Selector, "invalid label selector."))
|
|
} else {
|
|
allErrs = append(allErrs, ValidatePodTemplateSpecForReplicaSet(&spec.Template, selector, spec.Replicas, fldPath.Child("template"))...)
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
// Validates the given template and ensures that it is in accordance with the desired selector and replicas.
|
|
func ValidatePodTemplateSpecForReplicaSet(template *api.PodTemplateSpec, selector labels.Selector, replicas int32, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
if template == nil {
|
|
allErrs = append(allErrs, field.Required(fldPath, ""))
|
|
} else {
|
|
if !selector.Empty() {
|
|
// Verify that the ReplicaSet selector matches the labels in template.
|
|
labels := labels.Set(template.Labels)
|
|
if !selector.Matches(labels) {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("metadata", "labels"), template.Labels, "`selector` does not match template `labels`"))
|
|
}
|
|
}
|
|
allErrs = append(allErrs, apivalidation.ValidatePodTemplateSpec(template, fldPath)...)
|
|
if replicas > 1 {
|
|
allErrs = append(allErrs, apivalidation.ValidateReadOnlyPersistentDisks(template.Spec.Volumes, fldPath.Child("spec", "volumes"))...)
|
|
}
|
|
// RestartPolicy has already been first-order validated as per ValidatePodTemplateSpec().
|
|
if template.Spec.RestartPolicy != api.RestartPolicyAlways {
|
|
allErrs = append(allErrs, field.NotSupported(fldPath.Child("spec", "restartPolicy"), template.Spec.RestartPolicy, []string{string(api.RestartPolicyAlways)}))
|
|
}
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
// ValidatePodSecurityPolicyName can be used to check whether the given
|
|
// pod security policy name is valid.
|
|
// Prefix indicates this name will be used as part of generation, in which case
|
|
// trailing dashes are allowed.
|
|
var ValidatePodSecurityPolicyName = apivalidation.NameIsDNSSubdomain
|
|
|
|
func ValidatePodSecurityPolicy(psp *extensions.PodSecurityPolicy) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&psp.ObjectMeta, false, ValidatePodSecurityPolicyName, field.NewPath("metadata"))...)
|
|
allErrs = append(allErrs, ValidatePodSecurityPolicySpecificAnnotations(psp.Annotations, field.NewPath("metadata").Child("annotations"))...)
|
|
allErrs = append(allErrs, ValidatePodSecurityPolicySpec(&psp.Spec, field.NewPath("spec"))...)
|
|
return allErrs
|
|
}
|
|
|
|
func ValidatePodSecurityPolicySpec(spec *extensions.PodSecurityPolicySpec, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
allErrs = append(allErrs, validatePSPRunAsUser(fldPath.Child("runAsUser"), &spec.RunAsUser)...)
|
|
allErrs = append(allErrs, validatePSPSELinux(fldPath.Child("seLinux"), &spec.SELinux)...)
|
|
allErrs = append(allErrs, validatePSPSupplementalGroup(fldPath.Child("supplementalGroups"), &spec.SupplementalGroups)...)
|
|
allErrs = append(allErrs, validatePSPFSGroup(fldPath.Child("fsGroup"), &spec.FSGroup)...)
|
|
allErrs = append(allErrs, validatePodSecurityPolicyVolumes(fldPath, spec.Volumes)...)
|
|
allErrs = append(allErrs, validatePSPCapsAgainstDrops(spec.RequiredDropCapabilities, spec.DefaultAddCapabilities, field.NewPath("defaultAddCapabilities"))...)
|
|
allErrs = append(allErrs, validatePSPCapsAgainstDrops(spec.RequiredDropCapabilities, spec.AllowedCapabilities, field.NewPath("allowedCapabilities"))...)
|
|
|
|
return allErrs
|
|
}
|
|
|
|
func ValidatePodSecurityPolicySpecificAnnotations(annotations map[string]string, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
if p := annotations[apparmor.DefaultProfileAnnotationKey]; p != "" {
|
|
if err := apparmor.ValidateProfileFormat(p); err != nil {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Key(apparmor.DefaultProfileAnnotationKey), p, err.Error()))
|
|
}
|
|
}
|
|
if allowed := annotations[apparmor.AllowedProfilesAnnotationKey]; allowed != "" {
|
|
for _, p := range strings.Split(allowed, ",") {
|
|
if err := apparmor.ValidateProfileFormat(p); err != nil {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Key(apparmor.AllowedProfilesAnnotationKey), allowed, err.Error()))
|
|
}
|
|
}
|
|
}
|
|
|
|
sysctlAnnotation := annotations[extensions.SysctlsPodSecurityPolicyAnnotationKey]
|
|
sysctlFldPath := fldPath.Key(extensions.SysctlsPodSecurityPolicyAnnotationKey)
|
|
sysctls, err := extensions.SysctlsFromPodSecurityPolicyAnnotation(sysctlAnnotation)
|
|
if err != nil {
|
|
allErrs = append(allErrs, field.Invalid(sysctlFldPath, sysctlAnnotation, err.Error()))
|
|
} else {
|
|
allErrs = append(allErrs, validatePodSecurityPolicySysctls(sysctlFldPath, sysctls)...)
|
|
}
|
|
|
|
return allErrs
|
|
}
|
|
|
|
// validatePSPSELinux validates the SELinux fields of PodSecurityPolicy.
|
|
func validatePSPSELinux(fldPath *field.Path, seLinux *extensions.SELinuxStrategyOptions) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
// ensure the selinux strategy has a valid rule
|
|
supportedSELinuxRules := sets.NewString(string(extensions.SELinuxStrategyMustRunAs),
|
|
string(extensions.SELinuxStrategyRunAsAny))
|
|
if !supportedSELinuxRules.Has(string(seLinux.Rule)) {
|
|
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), seLinux.Rule, supportedSELinuxRules.List()))
|
|
}
|
|
|
|
return allErrs
|
|
}
|
|
|
|
// validatePSPRunAsUser validates the RunAsUser fields of PodSecurityPolicy.
|
|
func validatePSPRunAsUser(fldPath *field.Path, runAsUser *extensions.RunAsUserStrategyOptions) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
// ensure the user strategy has a valid rule
|
|
supportedRunAsUserRules := sets.NewString(string(extensions.RunAsUserStrategyMustRunAs),
|
|
string(extensions.RunAsUserStrategyMustRunAsNonRoot),
|
|
string(extensions.RunAsUserStrategyRunAsAny))
|
|
if !supportedRunAsUserRules.Has(string(runAsUser.Rule)) {
|
|
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), runAsUser.Rule, supportedRunAsUserRules.List()))
|
|
}
|
|
|
|
// validate range settings
|
|
for idx, rng := range runAsUser.Ranges {
|
|
allErrs = append(allErrs, validateIDRanges(fldPath.Child("ranges").Index(idx), rng)...)
|
|
}
|
|
|
|
return allErrs
|
|
}
|
|
|
|
// validatePSPFSGroup validates the FSGroupStrategyOptions fields of the PodSecurityPolicy.
|
|
func validatePSPFSGroup(fldPath *field.Path, groupOptions *extensions.FSGroupStrategyOptions) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
supportedRules := sets.NewString(
|
|
string(extensions.FSGroupStrategyMustRunAs),
|
|
string(extensions.FSGroupStrategyRunAsAny),
|
|
)
|
|
if !supportedRules.Has(string(groupOptions.Rule)) {
|
|
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), groupOptions.Rule, supportedRules.List()))
|
|
}
|
|
|
|
for idx, rng := range groupOptions.Ranges {
|
|
allErrs = append(allErrs, validateIDRanges(fldPath.Child("ranges").Index(idx), rng)...)
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
// validatePSPSupplementalGroup validates the SupplementalGroupsStrategyOptions fields of the PodSecurityPolicy.
|
|
func validatePSPSupplementalGroup(fldPath *field.Path, groupOptions *extensions.SupplementalGroupsStrategyOptions) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
supportedRules := sets.NewString(
|
|
string(extensions.SupplementalGroupsStrategyRunAsAny),
|
|
string(extensions.SupplementalGroupsStrategyMustRunAs),
|
|
)
|
|
if !supportedRules.Has(string(groupOptions.Rule)) {
|
|
allErrs = append(allErrs, field.NotSupported(fldPath.Child("rule"), groupOptions.Rule, supportedRules.List()))
|
|
}
|
|
|
|
for idx, rng := range groupOptions.Ranges {
|
|
allErrs = append(allErrs, validateIDRanges(fldPath.Child("ranges").Index(idx), rng)...)
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
// validatePodSecurityPolicyVolumes validates the volume fields of PodSecurityPolicy.
|
|
func validatePodSecurityPolicyVolumes(fldPath *field.Path, volumes []extensions.FSType) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
allowed := psputil.GetAllFSTypesAsSet()
|
|
// add in the * value since that is a pseudo type that is not included by default
|
|
allowed.Insert(string(extensions.All))
|
|
for _, v := range volumes {
|
|
if !allowed.Has(string(v)) {
|
|
allErrs = append(allErrs, field.NotSupported(fldPath.Child("volumes"), v, allowed.List()))
|
|
}
|
|
}
|
|
|
|
return allErrs
|
|
}
|
|
|
|
const sysctlPatternSegmentFmt string = "([a-z0-9][-_a-z0-9]*)?[a-z0-9*]"
|
|
const SysctlPatternFmt string = "(" + apivalidation.SysctlSegmentFmt + "\\.)*" + sysctlPatternSegmentFmt
|
|
|
|
var sysctlPatternRegexp = regexp.MustCompile("^" + SysctlPatternFmt + "$")
|
|
|
|
func IsValidSysctlPattern(name string) bool {
|
|
if len(name) > apivalidation.SysctlMaxLength {
|
|
return false
|
|
}
|
|
return sysctlPatternRegexp.MatchString(name)
|
|
}
|
|
|
|
// validatePodSecurityPolicySysctls validates the sysctls fields of PodSecurityPolicy.
|
|
func validatePodSecurityPolicySysctls(fldPath *field.Path, sysctls []string) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
for i, s := range sysctls {
|
|
if !IsValidSysctlPattern(string(s)) {
|
|
allErrs = append(
|
|
allErrs,
|
|
field.Invalid(fldPath.Index(i), sysctls[i], fmt.Sprintf("must have at most %d characters and match regex %s",
|
|
apivalidation.SysctlMaxLength,
|
|
SysctlPatternFmt,
|
|
)),
|
|
)
|
|
}
|
|
}
|
|
|
|
return allErrs
|
|
}
|
|
|
|
// validateIDRanges ensures the range is valid.
|
|
func validateIDRanges(fldPath *field.Path, rng extensions.IDRange) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
|
|
// if 0 <= Min <= Max then we do not need to validate max. It is always greater than or
|
|
// equal to 0 and Min.
|
|
if rng.Min < 0 {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("min"), rng.Min, "min cannot be negative"))
|
|
}
|
|
if rng.Max < 0 {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("max"), rng.Max, "max cannot be negative"))
|
|
}
|
|
if rng.Min > rng.Max {
|
|
allErrs = append(allErrs, field.Invalid(fldPath.Child("min"), rng.Min, "min cannot be greater than max"))
|
|
}
|
|
|
|
return allErrs
|
|
}
|
|
|
|
// validatePSPCapsAgainstDrops ensures an allowed cap is not listed in the required drops.
|
|
func validatePSPCapsAgainstDrops(requiredDrops []api.Capability, capsToCheck []api.Capability, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
if requiredDrops == nil {
|
|
return allErrs
|
|
}
|
|
for _, cap := range capsToCheck {
|
|
if hasCap(cap, requiredDrops) {
|
|
allErrs = append(allErrs, field.Invalid(fldPath, cap,
|
|
fmt.Sprintf("capability is listed in %s and requiredDropCapabilities", fldPath.String())))
|
|
}
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
// hasCap checks for needle in haystack.
|
|
func hasCap(needle api.Capability, haystack []api.Capability) bool {
|
|
for _, c := range haystack {
|
|
if needle == c {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// ValidatePodSecurityPolicyUpdate validates a PSP for updates.
|
|
func ValidatePodSecurityPolicyUpdate(old *extensions.PodSecurityPolicy, new *extensions.PodSecurityPolicy) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&new.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))...)
|
|
allErrs = append(allErrs, ValidatePodSecurityPolicySpecificAnnotations(new.Annotations, field.NewPath("metadata").Child("annotations"))...)
|
|
allErrs = append(allErrs, ValidatePodSecurityPolicySpec(&new.Spec, field.NewPath("spec"))...)
|
|
return allErrs
|
|
}
|
|
|
|
// ValidateNetworkPolicyName can be used to check whether the given networkpolicy
|
|
// name is valid.
|
|
func ValidateNetworkPolicyName(name string, prefix bool) []string {
|
|
return apivalidation.NameIsDNSSubdomain(name, prefix)
|
|
}
|
|
|
|
// ValidateNetworkPolicySpec tests if required fields in the networkpolicy spec are set.
|
|
func ValidateNetworkPolicySpec(spec *extensions.NetworkPolicySpec, fldPath *field.Path) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(&spec.PodSelector, fldPath.Child("podSelector"))...)
|
|
|
|
// Validate ingress rules.
|
|
for _, i := range spec.Ingress {
|
|
// TODO: Update From to be a pointer to slice as soon as auto-generation supports it.
|
|
for _, f := range i.From {
|
|
numFroms := 0
|
|
if f.PodSelector != nil {
|
|
numFroms++
|
|
allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(f.PodSelector, fldPath.Child("podSelector"))...)
|
|
}
|
|
if f.NamespaceSelector != nil {
|
|
if numFroms > 0 {
|
|
allErrs = append(allErrs, field.Forbidden(fldPath, "may not specify more than 1 from type"))
|
|
} else {
|
|
numFroms++
|
|
allErrs = append(allErrs, unversionedvalidation.ValidateLabelSelector(f.NamespaceSelector, fldPath.Child("namespaces"))...)
|
|
}
|
|
}
|
|
|
|
if numFroms == 0 {
|
|
// At least one of PodSelector and NamespaceSelector must be defined.
|
|
allErrs = append(allErrs, field.Required(fldPath, "must specify a from type"))
|
|
}
|
|
}
|
|
}
|
|
return allErrs
|
|
}
|
|
|
|
// ValidateNetworkPolicy validates a networkpolicy.
|
|
func ValidateNetworkPolicy(np *extensions.NetworkPolicy) field.ErrorList {
|
|
allErrs := apivalidation.ValidateObjectMeta(&np.ObjectMeta, true, ValidateNetworkPolicyName, field.NewPath("metadata"))
|
|
allErrs = append(allErrs, ValidateNetworkPolicySpec(&np.Spec, field.NewPath("spec"))...)
|
|
return allErrs
|
|
}
|
|
|
|
// ValidateNetworkPolicyUpdate tests if an update to a NetworkPolicy is valid.
|
|
func ValidateNetworkPolicyUpdate(update, old *extensions.NetworkPolicy) field.ErrorList {
|
|
allErrs := field.ErrorList{}
|
|
allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&update.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))...)
|
|
if !reflect.DeepEqual(update.Spec, old.Spec) {
|
|
allErrs = append(allErrs, field.Forbidden(field.NewPath("spec"), "updates to networkpolicy spec are forbidden."))
|
|
}
|
|
return allErrs
|
|
}
|