mirror of
https://github.com/ceph/ceph-csi.git
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67 lines
2.1 KiB
Go
67 lines
2.1 KiB
Go
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/*
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Copyright 2019 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 dynamiccertificates
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import (
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"crypto/x509"
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"fmt"
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"strings"
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"time"
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)
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// GetHumanCertDetail is a convenient method for printing compact details of certificate that helps when debugging
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// kube-apiserver usage of certs.
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func GetHumanCertDetail(certificate *x509.Certificate) string {
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humanName := certificate.Subject.CommonName
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signerHumanName := certificate.Issuer.CommonName
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if certificate.Subject.CommonName == certificate.Issuer.CommonName {
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signerHumanName = "<self>"
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}
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usages := []string{}
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for _, curr := range certificate.ExtKeyUsage {
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if curr == x509.ExtKeyUsageClientAuth {
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usages = append(usages, "client")
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continue
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}
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if curr == x509.ExtKeyUsageServerAuth {
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usages = append(usages, "serving")
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continue
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}
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usages = append(usages, fmt.Sprintf("%d", curr))
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}
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validServingNames := []string{}
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for _, ip := range certificate.IPAddresses {
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validServingNames = append(validServingNames, ip.String())
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}
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validServingNames = append(validServingNames, certificate.DNSNames...)
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servingString := ""
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if len(validServingNames) > 0 {
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servingString = fmt.Sprintf(" validServingFor=[%s]", strings.Join(validServingNames, ","))
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}
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groupString := ""
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if len(certificate.Subject.Organization) > 0 {
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groupString = fmt.Sprintf(" groups=[%s]", strings.Join(certificate.Subject.Organization, ","))
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}
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return fmt.Sprintf("%q [%s]%s%s issuer=%q (%v to %v (now=%v))", humanName, strings.Join(usages, ","), groupString, servingString, signerHumanName, certificate.NotBefore.UTC(), certificate.NotAfter.UTC(),
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time.Now().UTC())
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}
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