/
member.go
63 lines (54 loc) · 1.66 KB
/
member.go
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// Copyright 2021 Google LLC
//
// 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 flag
import (
"fmt"
"regexp"
"strings"
"github.com/spf13/pflag"
)
var (
validPrefixes = []string{
"user:",
"group:",
"serviceAccount:",
"domain:",
"principal://",
"principalSet://",
}
deletedSuffixRegexp = regexp.MustCompile(`\?uid=[0-9]+$`)
)
// Member represents a user, group, serviceAccount or domain used in an IAM policy binding
// Ref: https://cloud.google.com/security-command-center/docs/reference/rest/Shared.Types/Policy
type Member struct {
value string
}
func (m *Member) Add(flags *pflag.FlagSet) {
flags.StringVar(&m.value, "member", "",
"The member of the IAM policy binding. Should be of the form `user|group|serviceAccount:email`, `domain:domain`, `principal://...` or `principalSet://...`")
}
func (m *Member) Validate() error {
for _, prefix := range validPrefixes {
if strings.HasPrefix(m.value, prefix) {
return nil
}
if strings.HasPrefix(m.value, "deleted:"+prefix) && deletedSuffixRegexp.MatchString(m.value) {
return nil
}
}
return fmt.Errorf("invalid member: [%v]", m.value)
}
func (m *Member) Value() string {
return m.value
}