143 lines
4.6 KiB
Go
143 lines
4.6 KiB
Go
/*
|
|
Copyright 2019 The Jetstack cert-manager contributors.
|
|
|
|
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 ca
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
corev1 "k8s.io/api/core/v1"
|
|
k8sErrors "k8s.io/apimachinery/pkg/api/errors"
|
|
corelisters "k8s.io/client-go/listers/core/v1"
|
|
"k8s.io/client-go/tools/record"
|
|
|
|
apiutil "github.com/jetstack/cert-manager/pkg/api/util"
|
|
"github.com/jetstack/cert-manager/pkg/apis/certmanager/v1alpha1"
|
|
controllerpkg "github.com/jetstack/cert-manager/pkg/controller"
|
|
"github.com/jetstack/cert-manager/pkg/controller/certificaterequests"
|
|
issuerpkg "github.com/jetstack/cert-manager/pkg/issuer"
|
|
logf "github.com/jetstack/cert-manager/pkg/logs"
|
|
"github.com/jetstack/cert-manager/pkg/util/kube"
|
|
"github.com/jetstack/cert-manager/pkg/util/pki"
|
|
)
|
|
|
|
const (
|
|
CRControllerName = "certificaterequests-issuer-ca"
|
|
)
|
|
|
|
type CA struct {
|
|
// used to record Events about resources to the API
|
|
recorder record.EventRecorder
|
|
|
|
issuerOptions controllerpkg.IssuerOptions
|
|
secretsLister corelisters.SecretLister
|
|
helper issuerpkg.Helper
|
|
}
|
|
|
|
func init() {
|
|
// create certificate request controller for ca issuer
|
|
controllerpkg.Register(CRControllerName, func(ctx *controllerpkg.Context) (controllerpkg.Interface, error) {
|
|
ca := NewCA(ctx)
|
|
|
|
controller := certificaterequests.New(apiutil.IssuerCA, ca)
|
|
|
|
c, err := controllerpkg.New(ctx, CRControllerName, controller)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return c.Run, nil
|
|
})
|
|
}
|
|
|
|
func NewCA(ctx *controllerpkg.Context) *CA {
|
|
return &CA{
|
|
recorder: ctx.Recorder,
|
|
issuerOptions: ctx.IssuerOptions,
|
|
secretsLister: ctx.KubeSharedInformerFactory.Core().V1().Secrets().Lister(),
|
|
helper: issuerpkg.NewHelper(
|
|
ctx.SharedInformerFactory.Certmanager().V1alpha1().Issuers().Lister(),
|
|
ctx.SharedInformerFactory.Certmanager().V1alpha1().ClusterIssuers().Lister(),
|
|
),
|
|
}
|
|
}
|
|
|
|
func (c *CA) Sign(ctx context.Context, cr *v1alpha1.CertificateRequest) (*issuerpkg.IssueResponse, error) {
|
|
log := logf.FromContext(ctx, "sign")
|
|
|
|
issuer, err := c.helper.GetGenericIssuer(cr.Spec.IssuerRef, cr.Namespace)
|
|
if k8sErrors.IsNotFound(err) {
|
|
apiutil.SetCertificateRequestCondition(cr, v1alpha1.CertificateRequestConditionReady,
|
|
v1alpha1.ConditionFalse, v1alpha1.CertificateRequestReasonPending,
|
|
fmt.Sprintf("Referenced %s not found", apiutil.IssuerKind(cr.Spec.IssuerRef)))
|
|
|
|
c.recorder.Event(cr, corev1.EventTypeWarning, v1alpha1.CertificateRequestReasonPending, err.Error())
|
|
|
|
log.WithValues(
|
|
logf.RelatedResourceNameKey, cr.Spec.IssuerRef.Name,
|
|
logf.RelatedResourceKindKey, cr.Spec.IssuerRef.Kind,
|
|
).Error(err, "failed to find referenced issuer")
|
|
|
|
return nil, nil
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
resourceNamespace := c.issuerOptions.ResourceNamespace(issuer)
|
|
|
|
// get a copy of the CA certificate named on the Issuer
|
|
caCerts, caKey, err := kube.SecretTLSKeyPair(ctx, c.secretsLister, resourceNamespace, issuer.GetSpec().CA.SecretName)
|
|
if k8sErrors.IsNotFound(err) {
|
|
log := logf.WithRelatedResourceName(log, issuer.GetSpec().CA.SecretName, resourceNamespace, "Secret")
|
|
log.Info("error getting signing CA for Issuer")
|
|
|
|
c.recorder.Event(cr, corev1.EventTypeWarning, v1alpha1.CertificateRequestReasonPending, err.Error())
|
|
|
|
return nil, nil
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
template, err := pki.GenerateTemplateFromCertificateRequest(cr)
|
|
if err != nil {
|
|
apiutil.SetCertificateRequestCondition(cr, v1alpha1.CertificateRequestConditionReady,
|
|
v1alpha1.ConditionFalse, v1alpha1.CertificateRequestReasonFailed,
|
|
fmt.Sprintf("Failed to generate certificate template: %s", err))
|
|
|
|
// TODO: add mechanism here to handle invalid input errors which should result in a permanent failure
|
|
log.Error(err, "error generating certificate template")
|
|
c.recorder.Eventf(cr, corev1.EventTypeWarning, "ErrorSigning", "Error generating certificate template: %v", err)
|
|
return nil, nil
|
|
}
|
|
|
|
certPEM, caPEM, err := pki.SignCSRTemplate(caCerts, caKey, template)
|
|
if err != nil {
|
|
log.Error(err, "error signing certificate")
|
|
c.recorder.Eventf(cr, corev1.EventTypeWarning, "ErrorSigning", "Error signing certificate: %v", err)
|
|
return nil, err
|
|
}
|
|
|
|
log.Info("certificate issued")
|
|
|
|
return &issuerpkg.IssueResponse{
|
|
Certificate: certPEM,
|
|
CA: caPEM,
|
|
}, nil
|
|
}
|