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path: root/cmd/acme/main.go
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package main

import (
	"flag"
	"log"
	"sync"

	"dim13.org/acme"
)

var confName = flag.String("conf", "acme.toml", "configuration file")

func prepare(conf *Config) error {
	var wg sync.WaitGroup
	var err error
	errc := make(chan error, 1)

	for k, acc := range conf.Account {
		wg.Add(1)
		go func(k string, acc *account) {
			defer wg.Done()
			log.Println("LoadAccount", k)
			acc.Account, err = acme.LoadAccount(acc.Key)
			if err != nil {
				log.Println(err)
				log.Println("NewAccount", k)
				acc.Account, err = acme.NewAccount(acc.KeySize)
				if err != nil {
					errc <- err
					return
				}
				err = acc.Account.SaveKey(acc.Key)
				if err != nil {
					errc <- err
					return
				}
				acc.pending = true
			}
			acc.Contacts.AddMail(acc.Mail)
			acc.Contacts.AddPhone(acc.Phone)
			conf.Account[k] = acc
		}(k, acc)
	}

	for k, des := range conf.Desire {
		wg.Add(1)
		go func(k string, des *desire) {
			defer wg.Done()
			log.Println("NewDesire", k)
			des.Desire, err = acme.NewDesire(des.Altnames, des.Webroot, des.KeySize)
			if err != nil {
				errc <- err
				return
			}
			conf.Desire[k] = des
		}(k, des)
	}

	for k, pro := range conf.Provider {
		wg.Add(1)
		go func(k string, pro *provider) {
			defer wg.Done()
			log.Println("NewProvider", k)
			pro.Provider, err = acme.NewProvider(pro.Directory)
			if err != nil {
				errc <- err
				return
			}
			conf.Provider[k] = pro
		}(k, pro)
	}

	go func() {
		wg.Wait()
		close(errc)
	}()

	return <-errc
}

func execute(conf *Config) error {
	var wg sync.WaitGroup
	var err error
	errc := make(chan error, 1)

	for k, des := range conf.Desire {
		if des.account.pending {
			err = des.provider.Register(des.account, des.account.Contacts)
			if err != nil {
				return err
			}
		}

		hs := &httpChallenge{Webroot: des.Webroot}
		des.RegisterSolver(acme.ChallengeHTTP, hs)

		wg.Add(1)
		go func(k string, des *desire) {
			log.Println("process", k)
			defer wg.Done()

			err = des.provider.Authorize(des.account, des.Desire)
			if err != nil {
				errc <- err
				return
			}

			err = des.provider.Cert(des.account, des.Desire)
			if err != nil {
				errc <- err
				return
			}

			des.SaveKey(des.Key)
			des.SaveCert(des.Cert)
		}(k, des)
	}

	go func() {
		wg.Wait()
		close(errc)
	}()

	return <-errc
}

func main() {
	flag.Parse()
	conf, err := LoadConfig(*confName)
	if err != nil {
		log.Fatal(err)
	}
	if err := prepare(conf); err != nil {
		log.Fatal(err)
	}
	httpSolver(conf.Defaults.Listen)
	if err := execute(conf); err != nil {
		log.Fatal(err)
	}
}