Files
certman/certs.go
2026-02-18 21:58:56 +01:00

97 lines
2.3 KiB
Go

package main
import (
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"fmt"
"github.com/go-acme/lego/v4/providers/dns/cloudflare"
"log"
"os"
"github.com/go-acme/lego/v4/certcrypto"
"github.com/go-acme/lego/v4/certificate"
"github.com/go-acme/lego/v4/lego"
"github.com/go-acme/lego/v4/registration"
)
type User struct {
Email string
Registration *registration.Resource
key crypto.PrivateKey
}
func (u *User) GetEmail() string {
return u.Email
}
func (u User) GetRegistration() *registration.Resource {
return u.Registration
}
func (u *User) GetPrivateKey() crypto.PrivateKey {
return u.key
}
func mainexample() {
// Create a user. New accounts need an email and private key to start.
privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err != nil {
log.Fatal(err)
}
user := User{
Email: config.GetAsString("Certificates.email"),
key: privateKey,
}
configLE := lego.NewConfig(&user)
// This CA URL is configured for a local dev instance of Boulder running in Docker in a VM.
configLE.CADirURL = "http://192.168.99.100:4000/directory"
configLE.Certificate.KeyType = certcrypto.RSA2048
// A client facilitates communication with the CA server.
client, err := lego.NewClient(configLE)
if err != nil {
log.Fatal(err)
}
dnsConfig := cloudflare.NewDefaultConfig()
dnsConfig.AuthEmail = "" //TODO Pull from config
dnsConfig.AuthKey = "" //TODO Pull from config
provider, err := cloudflare.NewDNSProviderConfig(dnsConfig)
if err != nil {
fmt.Printf("Error creating DNS provider: %v\n", err)
os.Exit(1)
}
err = client.Challenge.SetDNS01Provider(provider)
if err != nil {
fmt.Printf("Error setting dns provider: %v\n", err)
os.Exit(1)
}
// New users will need to register
reg, err := client.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: true})
if err != nil {
log.Fatal(err)
}
user.Registration = reg
request := certificate.ObtainRequest{
Domains: []string{"mydomain.com"},
Bundle: true,
}
certificates, err := client.Certificate.Obtain(request)
if err != nil {
log.Fatal(err)
}
// Each certificate comes back with the cert bytes, the bytes of the client's
// private key, and a certificate URL. SAVE THESE TO DISK.
fmt.Printf("%#v\n", certificates)
// ... all done.
}