f49a0fbd5f
We had IDRange in both types prior9440a68744commit that splitted it into UserIDRange/GroupIDRange. Later, inc91a12d205commit we had to revert this changes because they broke backward compatibility but UserIDRange/GroupIDRange struct left in the internal type. This commit removes these leftovers and reduces the differences between internal and external types.
89 lines
2.6 KiB
Go
89 lines
2.6 KiB
Go
/*
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Copyright 2016 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 group
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/util/validation/field"
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api "k8s.io/kubernetes/pkg/apis/core"
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"k8s.io/kubernetes/pkg/apis/policy"
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psputil "k8s.io/kubernetes/pkg/security/podsecuritypolicy/util"
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)
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// mustRunAs implements the GroupStrategy interface
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type mustRunAs struct {
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ranges []policy.IDRange
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field string
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}
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var _ GroupStrategy = &mustRunAs{}
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// NewMustRunAs provides a new MustRunAs strategy based on ranges.
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func NewMustRunAs(ranges []policy.IDRange, field string) (GroupStrategy, error) {
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if len(ranges) == 0 {
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return nil, fmt.Errorf("ranges must be supplied for MustRunAs")
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}
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return &mustRunAs{
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ranges: ranges,
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field: field,
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}, nil
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}
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// Generate creates the group based on policy rules. By default this returns the first group of the
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// first range (min val).
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func (s *mustRunAs) Generate(_ *api.Pod) ([]int64, error) {
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return []int64{s.ranges[0].Min}, nil
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}
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// Generate a single value to be applied. This is used for FSGroup. This strategy will return
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// the first group of the first range (min val).
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func (s *mustRunAs) GenerateSingle(_ *api.Pod) (*int64, error) {
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single := new(int64)
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*single = s.ranges[0].Min
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return single, nil
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}
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// Validate ensures that the specified values fall within the range of the strategy.
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// Groups are passed in here to allow this strategy to support multiple group fields (fsgroup and
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// supplemental groups).
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func (s *mustRunAs) Validate(_ *api.Pod, groups []int64) field.ErrorList {
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allErrs := field.ErrorList{}
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if len(groups) == 0 && len(s.ranges) > 0 {
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allErrs = append(allErrs, field.Invalid(field.NewPath(s.field), groups, "unable to validate empty groups against required ranges"))
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}
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for _, group := range groups {
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if !s.isGroupValid(group) {
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detail := fmt.Sprintf("group %d must be in the ranges: %v", group, s.ranges)
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allErrs = append(allErrs, field.Invalid(field.NewPath(s.field), groups, detail))
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}
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}
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return allErrs
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}
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func (s *mustRunAs) isGroupValid(group int64) bool {
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for _, rng := range s.ranges {
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if psputil.GroupFallsInRange(group, rng) {
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return true
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}
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}
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return false
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}
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