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package acme
import (
"crypto/tls"
"fmt"
"net"
"net/http"
)
// TLSProviderServer implements ChallengeProvider for `TLS-SNI-01` challenge
// It may be instantiated without using the NewTLSProviderServer function if
// you want only to use the default values.
type TLSProviderServer struct {
iface string
port string
done chan bool
listener net.Listener
}
// NewTLSProviderServer creates a new TLSProviderServer on the selected interface and port.
// Setting iface and / or port to an empty string will make the server fall back to
// the "any" interface and port 443 respectively.
func NewTLSProviderServer(iface, port string) *TLSProviderServer {
return &TLSProviderServer{iface: iface, port: port}
}
// Present makes the keyAuth available as a cert
func (s *TLSProviderServer) Present(domain, token, keyAuth string) error {
if s.port == "" {
s.port = "443"
}
cert, _, err := TLSSNI01ChallengeCert(keyAuth)
if err != nil {
return err
}
tlsConf := new(tls.Config)
tlsConf.Certificates = []tls.Certificate{cert}
s.listener, err = tls.Listen("tcp", net.JoinHostPort(s.iface, s.port), tlsConf)
if err != nil {
return fmt.Errorf("Could not start HTTPS server for challenge -> %v", err)
}
s.done = make(chan bool)
go func() {
http.Serve(s.listener, nil)
s.done <- true
}()
return nil
}
// CleanUp closes the HTTP server.
func (s *TLSProviderServer) CleanUp(domain, token, keyAuth string) error {
if s.listener == nil {
return nil
}
s.listener.Close()
<-s.done
return nil
}
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