// Listen to 10389 port for LDAP Request
// and route bind request to the handleBind func
package main

import (
	"log"
	"os"
	"os/signal"
	"syscall"

	ldap "github.com/vjeantet/ldapserver"
)

func main() {
	//ldap logger
	ldap.Logger = log.New(os.Stdout, "[server] ", log.LstdFlags)

	//Create a new LDAP Server
	server := ldap.NewServer()

	routes := ldap.NewRouteMux()
	routes.Bind(handleBind)
	server.Handle(routes)

	// listen on 10389
	go server.ListenAndServe("127.0.0.1:10389")

	// When CTRL+C, SIGINT and SIGTERM signal occurs
	// Then stop server gracefully
	ch := make(chan os.Signal)
	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
	<-ch
	close(ch)

	server.Stop()
}

// handleBind return Success if login == mysql
func handleBind(w ldap.ResponseWriter, m *ldap.Message) {
	r := m.GetBindRequest()
	res := ldap.NewBindResponse(ldap.LDAPResultSuccess)

	if string(r.Name()) == "myLogin" {
		w.Write(res)
		return
	}

	log.Printf("Bind failed User=%s, Pass=%s", string(r.Name()), string(r.AuthenticationSimple()))
	res.SetResultCode(ldap.LDAPResultInvalidCredentials)
	res.SetDiagnosticMessage("invalid credentials")
	w.Write(res)
}