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|
// ACME CLI tool
package main
import (
"flag"
"log"
"time"
"dim13.org/acme"
)
var (
confName = flag.String("conf", "", "configuration file")
forceRenew = flag.Bool("force", false, "force renew")
httpSol, tlsSol acme.Solver
)
func dialProvider(p provider) error {
log.Println("Dial", p.Directory)
prov, err := acme.DialProvider(p.Directory)
if err != nil {
return err
}
for _, a := range p.Account {
if err := loadAccount(prov, a); err != nil {
return err
}
}
return nil
}
func load(a account) (*acme.Signer, error) {
key, err := a.Load()
if err != nil {
return nil, err
}
log.Println("Load", a.KeyFile)
return acme.NewSigner(key)
}
func register(prov *acme.Provider, a account) (*acme.Signer, error) {
key, err := acme.NewKey(a.KeySize)
if err != nil {
return nil, err
}
defer a.Save(key)
acc, err := acme.NewSigner(key)
if err != nil {
return nil, err
}
con, err := acme.NewContacts(a.Mail, a.Phone)
if err != nil {
return nil, err
}
agree := func(tos string) bool {
log.Println("agree to", tos)
return true
}
log.Println("Register", con)
if err := prov.Register(acc, con, agree); err != nil {
return nil, err
}
return acc, nil
}
func loadAccount(prov *acme.Provider, a account) error {
acc, err := load(a)
if err != nil {
acc, err = register(prov, a)
if err != nil {
return err
}
}
for _, d := range a.Domain {
if err := requestCert(prov, acc, d); err != nil {
return err
}
}
return nil
}
func requestCert(prov *acme.Provider, acc *acme.Signer, d domain) error {
c, err := d.Load()
if err != nil {
c.PrivateKey, err = acme.NewKey(d.KeySize)
if err != nil {
return err
}
}
skipValid := func() bool {
if c.Leaf == nil || *forceRenew {
return false
}
return time.Now().Add(d.Gracetime).Before(c.Leaf.NotAfter)
}
if skipValid() {
log.Println("skip valid until", c.Leaf.NotAfter)
return nil
}
sols := acme.NewSolvers()
if d.Webroot != "" {
sols.Add(acme.NewWebrootSolver(d.Webroot))
} else {
sols.Add(httpSol)
sols.Add(tlsSol)
}
for _, alt := range d.Altnames {
log.Println("Authorize", alt)
if err := prov.Authorize(acc, sols, alt); err != nil {
return err
}
}
log.Println("Request bundle for", d.Altnames)
cert, err := prov.Bundle(acc, c.PrivateKey, d.Altnames)
if err != nil {
return err
}
log.Println("Save", d.CrtFile, d.KeyFile)
if err := d.Save(cert); err != nil {
return err
}
return nil
}
func main() {
flag.Parse()
conf, err := LoadConfig(*confName)
if err != nil {
log.Fatal(err)
}
httpSol, err = acme.NewHTTPSolver(conf.Listen)
if err != nil {
log.Println("HTTP Solver", err)
}
tlsSol, err = acme.NewTLSSolver(conf.ListenTLS)
if err != nil {
log.Println("TLS Solver", err)
}
for _, p := range conf.Provider {
if err := dialProvider(p); err != nil {
log.Fatal(err)
}
}
}
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