113 lines
3.9 KiB
Go
113 lines
3.9 KiB
Go
/*
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Copyright 2021 The cert-manager 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 util
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import (
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"crypto/x509"
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"math/bits"
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certificatesv1 "k8s.io/api/certificates/v1"
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)
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var keyUsagesKube = map[certificatesv1.KeyUsage]x509.KeyUsage{
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certificatesv1.UsageSigning: x509.KeyUsageDigitalSignature,
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certificatesv1.UsageDigitalSignature: x509.KeyUsageDigitalSignature,
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certificatesv1.UsageContentCommitment: x509.KeyUsageContentCommitment,
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certificatesv1.UsageKeyEncipherment: x509.KeyUsageKeyEncipherment,
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certificatesv1.UsageKeyAgreement: x509.KeyUsageKeyAgreement,
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certificatesv1.UsageDataEncipherment: x509.KeyUsageDataEncipherment,
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certificatesv1.UsageCertSign: x509.KeyUsageCertSign,
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certificatesv1.UsageCRLSign: x509.KeyUsageCRLSign,
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certificatesv1.UsageEncipherOnly: x509.KeyUsageEncipherOnly,
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certificatesv1.UsageDecipherOnly: x509.KeyUsageDecipherOnly,
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}
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var extKeyUsagesKube = map[certificatesv1.KeyUsage]x509.ExtKeyUsage{
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certificatesv1.UsageAny: x509.ExtKeyUsageAny,
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certificatesv1.UsageServerAuth: x509.ExtKeyUsageServerAuth,
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certificatesv1.UsageClientAuth: x509.ExtKeyUsageClientAuth,
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certificatesv1.UsageCodeSigning: x509.ExtKeyUsageCodeSigning,
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certificatesv1.UsageEmailProtection: x509.ExtKeyUsageEmailProtection,
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certificatesv1.UsageSMIME: x509.ExtKeyUsageEmailProtection,
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certificatesv1.UsageIPsecEndSystem: x509.ExtKeyUsageIPSECEndSystem,
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certificatesv1.UsageIPsecTunnel: x509.ExtKeyUsageIPSECTunnel,
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certificatesv1.UsageIPsecUser: x509.ExtKeyUsageIPSECUser,
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certificatesv1.UsageTimestamping: x509.ExtKeyUsageTimeStamping,
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certificatesv1.UsageOCSPSigning: x509.ExtKeyUsageOCSPSigning,
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certificatesv1.UsageMicrosoftSGC: x509.ExtKeyUsageMicrosoftServerGatedCrypto,
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certificatesv1.UsageNetscapeSGC: x509.ExtKeyUsageNetscapeServerGatedCrypto,
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}
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// KeyUsageTypeKube returns the relevant x509.KeyUsage or false if not found
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func KeyUsageTypeKube(usage certificatesv1.KeyUsage) (x509.KeyUsage, bool) {
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u, ok := keyUsagesKube[usage]
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return u, ok
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}
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// ExtKeyUsageTypeKube returns the relevant x509.KeyUsage or false if not found
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func ExtKeyUsageTypeKube(usage certificatesv1.KeyUsage) (x509.ExtKeyUsage, bool) {
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eu, ok := extKeyUsagesKube[usage]
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return eu, ok
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}
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// KubeKeyUsageStrings returns the certificatesv1.KeyUsage and "unknown" if not
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// found
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func KubeKeyUsageStrings(usage x509.KeyUsage) []certificatesv1.KeyUsage {
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var usageStr []certificatesv1.KeyUsage
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for i := 0; i < bits.UintSize; i++ {
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if v := usage & (1 << uint(i)); v != 0 {
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usageStr = append(usageStr, kubeKeyUsageString(v))
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}
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}
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return usageStr
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}
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// ExtKeyUsageStrings returns the certificatesv1.KeyUsage and "unknown" if not found
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func KubeExtKeyUsageStrings(usage []x509.ExtKeyUsage) []certificatesv1.KeyUsage {
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var usageStr []certificatesv1.KeyUsage
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for _, u := range usage {
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usageStr = append(usageStr, kubeExtKeyUsageString(u))
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}
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return usageStr
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}
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// kubeKeyUsageString returns the cmapi.KeyUsage and "unknown" if not found
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func kubeKeyUsageString(usage x509.KeyUsage) certificatesv1.KeyUsage {
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for k, v := range keyUsagesKube {
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if usage == v {
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return k
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}
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}
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return "unknown"
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}
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// kubeExtKeyUsageString returns the cmapi.ExtKeyUsage and "unknown" if not found
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func kubeExtKeyUsageString(usage x509.ExtKeyUsage) certificatesv1.KeyUsage {
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for k, v := range extKeyUsagesKube {
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if usage == v {
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return k
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}
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}
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return "unknown"
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}
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