116 lines
3.8 KiB
Go
116 lines
3.8 KiB
Go
/*
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Copyright 2018 The Jetstack cert-manager contributors.
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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 ca
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import (
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"context"
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"fmt"
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k8sErrors "k8s.io/apimachinery/pkg/api/errors"
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"github.com/jetstack/cert-manager/pkg/apis/certmanager/v1alpha1"
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"github.com/jetstack/cert-manager/pkg/util/errors"
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"github.com/jetstack/cert-manager/pkg/util/kube"
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"github.com/jetstack/cert-manager/pkg/util/pki"
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)
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const (
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errorGetCertKeyPair = "ErrGetCertKeyPair"
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errorIssueCert = "ErrIssueCert"
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errorGetPublicKey = "ErrGetPublicKey"
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errorEncodePrivateKey = "ErrEncodePrivateKey"
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successCertIssued = "CertIssueSuccess"
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messageErrorGetCertKeyPair = "Error getting keypair for certificate: "
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messageErrorIssueCert = "Error issuing TLS certificate: "
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messageErrorPublicKey = "Error getting public key from private key: "
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messageErrorEncodePrivateKey = "Error encoding private key: "
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messageCertIssued = "Certificate issued successfully"
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)
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func (c *CA) Issue(ctx context.Context, crt *v1alpha1.Certificate) ([]byte, []byte, error) {
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signeeKey, err := kube.SecretTLSKey(c.secretsLister, crt.Namespace, crt.Spec.SecretName)
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if k8sErrors.IsNotFound(err) || errors.IsInvalidData(err) {
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signeeKey, err = pki.GeneratePrivateKeyForCertificate(crt)
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}
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if err != nil {
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s := messageErrorGetCertKeyPair + err.Error()
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crt.UpdateStatusCondition(v1alpha1.CertificateConditionReady, v1alpha1.ConditionFalse, errorGetCertKeyPair, s, false)
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return nil, nil, err
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}
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publicKey, err := pki.PublicKeyForPrivateKey(signeeKey)
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if err != nil {
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s := messageErrorPublicKey + err.Error()
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crt.UpdateStatusCondition(v1alpha1.CertificateConditionReady, v1alpha1.ConditionFalse, errorGetPublicKey, s, false)
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return nil, nil, err
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}
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certPem, err := c.obtainCertificate(crt, publicKey)
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if err != nil {
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s := messageErrorIssueCert + err.Error()
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crt.UpdateStatusCondition(v1alpha1.CertificateConditionReady, v1alpha1.ConditionFalse, errorIssueCert, s, false)
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return nil, nil, err
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}
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crt.UpdateStatusCondition(v1alpha1.CertificateConditionReady, v1alpha1.ConditionTrue, successCertIssued, messageCertIssued, true)
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keyPem, err := pki.EncodePrivateKey(signeeKey)
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if err != nil {
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s := messageErrorEncodePrivateKey + err.Error()
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crt.UpdateStatusCondition(v1alpha1.CertificateConditionReady, v1alpha1.ConditionFalse, errorEncodePrivateKey, s, false)
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return nil, nil, err
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}
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return keyPem, certPem, nil
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}
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func (c *CA) obtainCertificate(crt *v1alpha1.Certificate, signeeKey interface{}) ([]byte, error) {
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commonName := crt.Spec.CommonName
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altNames := crt.Spec.DNSNames
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if len(commonName) == 0 && len(altNames) == 0 {
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return nil, fmt.Errorf("no domains specified on certificate")
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}
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signerCert, err := kube.SecretTLSCert(c.secretsLister, c.resourceNamespace, c.issuer.GetSpec().CA.SecretName)
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if err != nil {
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return nil, fmt.Errorf("error getting issuer certificate: %s", err.Error())
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}
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signerKey, err := kube.SecretTLSKey(c.secretsLister, c.resourceNamespace, c.issuer.GetSpec().CA.SecretName)
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if err != nil {
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return nil, fmt.Errorf("error getting issuer private key: %s", err.Error())
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}
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template, err := pki.GenerateTemplate(c.issuer, crt, nil)
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if err != nil {
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return nil, err
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}
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crtPem, _, err := pki.SignCertificate(template, signerCert, signeeKey, signerKey)
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if err != nil {
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return nil, err
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}
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return crtPem, nil
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}
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