132 lines
3.6 KiB
Go
132 lines
3.6 KiB
Go
/*
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* Copyright 2022 The Dragonfly Authors
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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 issuer
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import (
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"context"
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"crypto"
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"crypto/rand"
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"crypto/tls"
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"crypto/x509"
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"crypto/x509/pkix"
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"time"
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"github.com/johanbrandhorst/certify"
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"google.golang.org/protobuf/types/known/durationpb"
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securityv1 "d7y.io/api/pkg/apis/security/v1"
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logger "d7y.io/dragonfly/v2/internal/dflog"
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securityclient "d7y.io/dragonfly/v2/pkg/rpc/security/client"
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)
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var (
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// defaultSubjectOrganization is default organization of subject.
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defaultSubjectOrganization = []string{"Dragonfly"}
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// defaultValidityPeriod is default validity period of certificate.
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defaultValidityPeriod time.Duration = 180 * 24 * time.Hour
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)
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// dragonflyIssuer provides issuer function.
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type dragonflyIssuer struct {
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securityClient securityclient.V1
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validityPeriod time.Duration
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}
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// Option is a functional option for configuring the dragonflyIssuer.
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type Option func(i *dragonflyIssuer)
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// WithValidityPeriod set the validityPeriod for dragonflyIssuer.
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func WithValidityPeriod(d time.Duration) Option {
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return func(i *dragonflyIssuer) {
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i.validityPeriod = d
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}
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}
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// NewDragonflyIssuer returns a new certify.Issuer instence.
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func NewDragonflyIssuer(securityClient securityclient.V1, opts ...Option) certify.Issuer {
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i := &dragonflyIssuer{
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securityClient: securityClient,
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validityPeriod: defaultValidityPeriod,
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}
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for _, opt := range opts {
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opt(i)
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}
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return i
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}
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// Issue returns tls Certificate of issuing.
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func (i *dragonflyIssuer) Issue(ctx context.Context, commonName string, certConfig *certify.CertConfig) (*tls.Certificate, error) {
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csr, privateKey, err := fromCertifyCertConfig(commonName, certConfig)
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if err != nil {
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return nil, err
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}
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resp, err := i.securityClient.IssueCertificate(ctx, &securityv1.CertificateRequest{
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Csr: csr,
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ValidityPeriod: durationpb.New(i.validityPeriod),
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})
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if err != nil {
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return nil, err
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}
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leaf, err := x509.ParseCertificate(resp.CertificateChain[0])
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if err != nil {
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return nil, err
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}
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logger.Debugf("issue certificate from manager, common name: %s, issuer: %s", commonName, leaf.Issuer.CommonName)
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return &tls.Certificate{
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Certificate: resp.CertificateChain,
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PrivateKey: privateKey,
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Leaf: leaf,
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}, nil
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}
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// TODO this func is copied from internal package github.com/johanbrandhorst/certify@v1.9.0/internal/csr/csr.go
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// fromCertifyCertConfig creates a CSR and private key from the input config and common name.
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// It returns the CSR and private key in PEM format.
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func fromCertifyCertConfig(commonName string, conf *certify.CertConfig) ([]byte, crypto.PrivateKey, error) {
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pk, err := conf.KeyGenerator.Generate()
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if err != nil {
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return nil, nil, err
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}
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template := &x509.CertificateRequest{
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Subject: pkix.Name{
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CommonName: commonName,
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Organization: defaultSubjectOrganization,
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},
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}
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if conf != nil {
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template.DNSNames = conf.SubjectAlternativeNames
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template.IPAddresses = conf.IPSubjectAlternativeNames
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template.URIs = conf.URISubjectAlternativeNames
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}
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csr, err := x509.CreateCertificateRequest(rand.Reader, template, pk)
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if err != nil {
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return nil, nil, err
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}
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return csr, pk, nil
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}
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