99 lines
3.8 KiB
Go
99 lines
3.8 KiB
Go
/*
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Copyright 2020 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 certificates
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import (
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"bytes"
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"crypto/x509"
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"encoding/pem"
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cmapi "github.com/cert-manager/cert-manager/pkg/apis/certmanager/v1"
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cmutil "github.com/cert-manager/cert-manager/pkg/util"
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utilpki "github.com/cert-manager/cert-manager/pkg/util/pki"
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)
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// AnnotationsForCertificate returns a map which is set on all
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// Certificate Secret's Annotations when issued. These annotations contain
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// information about the Certificate.
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// If the X.509 certificate is nil, an empty map will be returned.
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func AnnotationsForCertificate(certificate *x509.Certificate) (map[string]string, error) {
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annotations := make(map[string]string)
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if certificate == nil {
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return annotations, nil
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}
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// TODO: the reason that for some annotations we keep empty annotations and we don't for others is not clear.
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// The keepEmpty parameter is only used here to maintain this unexplained previous behaviour.
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var encodingErr error
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addStringAnnotation := func(keepEmpty bool, key string, value string) {
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if len(value) == 0 && !keepEmpty {
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return
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}
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annotations[key] = value
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}
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addCSVEncodedAnnotation := func(keepEmpty bool, key string, values []string) {
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if len(values) == 0 && !keepEmpty {
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return
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}
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csvString, err := cmutil.JoinWithEscapeCSV(values)
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if err != nil {
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encodingErr = err
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return
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}
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annotations[key] = csvString
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}
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addStringAnnotation(true, cmapi.CommonNameAnnotationKey, certificate.Subject.CommonName)
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addStringAnnotation(false, cmapi.SubjectSerialNumberAnnotationKey, certificate.Subject.SerialNumber)
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addCSVEncodedAnnotation(false, cmapi.SubjectOrganizationsAnnotationKey, certificate.Subject.Organization)
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addCSVEncodedAnnotation(false, cmapi.SubjectOrganizationalUnitsAnnotationKey, certificate.Subject.OrganizationalUnit)
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addCSVEncodedAnnotation(false, cmapi.SubjectCountriesAnnotationKey, certificate.Subject.Country)
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addCSVEncodedAnnotation(false, cmapi.SubjectProvincesAnnotationKey, certificate.Subject.Province)
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addCSVEncodedAnnotation(false, cmapi.SubjectLocalitiesAnnotationKey, certificate.Subject.Locality)
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addCSVEncodedAnnotation(false, cmapi.SubjectPostalCodesAnnotationKey, certificate.Subject.PostalCode)
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addCSVEncodedAnnotation(false, cmapi.SubjectStreetAddressesAnnotationKey, certificate.Subject.StreetAddress)
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addCSVEncodedAnnotation(false, cmapi.EmailsAnnotationKey, certificate.EmailAddresses)
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addCSVEncodedAnnotation(true, cmapi.AltNamesAnnotationKey, certificate.DNSNames)
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addCSVEncodedAnnotation(true, cmapi.IPSANAnnotationKey, utilpki.IPAddressesToString(certificate.IPAddresses))
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addCSVEncodedAnnotation(true, cmapi.URISANAnnotationKey, utilpki.URLsToString(certificate.URIs))
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if encodingErr != nil {
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return nil, encodingErr
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}
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return annotations, nil
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}
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// OutputFormatDER returns the byte slice of the private key in DER format. To
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// be used for Certificate's Additional Output Format DER.
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func OutputFormatDER(privateKey []byte) []byte {
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block, _ := pem.Decode(privateKey)
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return block.Bytes
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}
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// OutputFormatCombinedPEM returns the byte slice of the PEM encoded private
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// key and signed certificate chain, concatenated. To be used for Certificate's
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// Additional Output Format Combined PEM.
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func OutputFormatCombinedPEM(privateKey, certificate []byte) []byte {
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return bytes.Join([][]byte{privateKey, certificate}, []byte("\n"))
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}
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