caddy/modules/caddypki/certificates.go
Matt Holt 57a708d189
caddytls: Support external certificate Managers (like Tailscale) (#4541)
Huge thank-you to Tailscale (https://tailscale.com) for making this change possible!
This is a great feature for Caddy and Tailscale is a great fit for a standard implementation.

* caddytls: GetCertificate modules; Tailscale

* Caddyfile support for get_certificate

Also fix AP provisioning in case of empty subject list (persist loaded
module on struct, much like Issuers, to surive reprovisioning).

And implement start of HTTP cert getter, still WIP.

* Update modules/caddytls/automation.go

Co-authored-by: Francis Lavoie <lavofr@gmail.com>

* Use tsclient package, check status for name

* Implement HTTP cert getter

And use reuse CertMagic's PEM functions for private keys.

* Remove cache option from Tailscale getter

Tailscale does its own caching and we don't need the added complexity...
for now, at least.

* Several updates

- Option to disable cert automation in auto HTTPS
- Support multiple cert managers
- Remove cache feature from cert manager modules
- Minor improvements to auto HTTPS logging

* Run go mod tidy

* Try to get certificates from Tailscale implicitly

Only for domains ending in .ts.net.

I think this is really cool!

Co-authored-by: Francis Lavoie <lavofr@gmail.com>
2022-02-17 15:40:34 -07:00

51 lines
1.7 KiB
Go

// Copyright 2015 Matthew Holt and The Caddy Authors
//
// 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 caddypki
import (
"crypto"
"crypto/x509"
"time"
"github.com/smallstep/cli/crypto/x509util"
)
func generateRoot(commonName string) (rootCrt *x509.Certificate, privateKey interface{}, err error) {
rootProfile, err := x509util.NewRootProfile(commonName)
if err != nil {
return
}
rootProfile.Subject().NotAfter = time.Now().Add(defaultRootLifetime) // TODO: make configurable
return newCert(rootProfile)
}
func generateIntermediate(commonName string, rootCrt *x509.Certificate, rootKey crypto.PrivateKey) (cert *x509.Certificate, privateKey crypto.PrivateKey, err error) {
interProfile, err := x509util.NewIntermediateProfile(commonName, rootCrt, rootKey)
if err != nil {
return
}
interProfile.Subject().NotAfter = time.Now().Add(defaultIntermediateLifetime) // TODO: make configurable
return newCert(interProfile)
}
func newCert(profile x509util.Profile) (cert *x509.Certificate, privateKey crypto.PrivateKey, err error) {
certBytes, err := profile.CreateCertificate()
if err != nil {
return
}
privateKey = profile.SubjectPrivateKey()
cert, err = x509.ParseCertificate(certBytes)
return
}