Golang GetSmtpConfig Examples

Example #1

File: handlers.go Project: jmcarbo/smtpd-1

// If running Nginx as a proxy, give Nginx the IP address and port for the SMTP server
// Primary use of Nginx is to terminate TLS so that Go doesn't need to deal with it.
// This could perform auth and load balancing too
// See http://wiki.nginx.org/MailCoreModule
func NginxHTTPAuth(w http.ResponseWriter, r *http.Request, ctx *Context) error {
	//log.LogTrace("Nginx Auth Client: %s", parseRemoteAddr(r))
	log.LogTrace("Nginx Auth Client IP <%s> (%s)", r.Header.Get("Client-IP"), r.Header.Get("Client-Host"))

	cfg := config.GetSmtpConfig()

	w.Header().Add("Auth-Status", "OK")
	w.Header().Add("Auth-Server", cfg.Ip4address.String())
	w.Header().Add("Auth-Port", strconv.Itoa(cfg.Ip4port))
	fmt.Fprint(w, "")
	return nil
}

Example #2

File: main.go Project: hiteshjoshi/smtpd

func main() {

	flag.Parse()
	runtime.GOMAXPROCS(runtime.NumCPU())

	if *help {
		flag.Usage()
		return
	}

	// Load & Parse config
	/*	if flag.NArg() != 1 {
		flag.Usage()
		os.Exit(1)
	}*/

	//err := config.LoadConfig(flag.Arg(0))
	err := config.LoadConfig(*configfile)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to parse config: %v\n", err)
		os.Exit(1)
	}

	// Setup signal handler
	sigChan := make(chan os.Signal)
	signal.Notify(sigChan, syscall.SIGHUP, syscall.SIGTERM)
	go signalProcessor(sigChan)

	// Configure logging, close std* fds
	level, _ := config.Config.String("logging", "level")
	log.SetLogLevel(level)

	if *logfile != "stderr" {
		// stderr is the go logging default
		if *logfile == "stdout" {
			// set to stdout
			golog.SetOutput(os.Stdout)
		} else {
			err := openLogFile()
			if err != nil {
				fmt.Fprintf(os.Stderr, "%v", err)
				os.Exit(1)
			}
			defer closeLogFile()

			// close std* streams
			os.Stdout.Close()
			os.Stderr.Close() // Warning: this will hide panic() output
			os.Stdin.Close()
			os.Stdout = logf
			os.Stderr = logf
		}
	}

	log.LogInfo("Smtpd %v (%v) starting...", VERSION, BUILD_DATE)

	// Write pidfile if requested
	// TODO: Probably supposed to remove pidfile during shutdown
	if *pidfile != "none" {
		pidf, err := os.Create(*pidfile)
		if err != nil {
			log.LogError("Failed to create %v: %v", *pidfile, err)
			os.Exit(1)
		}
		defer pidf.Close()
		fmt.Fprintf(pidf, "%v\n", os.Getpid())
	}

	// Grab our datastore
	ds := data.NewDataStore()

	// Start HTTP server
	//web.Initialize(config.GetWebConfig(), ds)
	//go web.Start()

	// Startup SMTP server, block until it exits
	smtpServer = smtpd.NewSmtpServer(config.GetSmtpConfig(), ds)
	smtpServer.Start()

	// Wait for active connections to finish
	smtpServer.Drain()
}

Example #3

File: server.go Project: jmcarbo/smtpd-1

// Main listener loop
func (s *Server) Start() {
	cfg := config.GetSmtpConfig()

	log.LogTrace("Loading the certificate: %s", cfg.PubKey)
	cert, err := tls.LoadX509KeyPair(cfg.PubKey, cfg.PrvKey)

	if err != nil {
		log.LogError("There was a problem with loading the certificate: %s", err)
	} else {
		s.TLSConfig = &tls.Config{
			Certificates: []tls.Certificate{cert},
			ClientAuth:   tls.VerifyClientCertIfGiven,
			ServerName:   cfg.Domain,
		}
		//s.TLSConfig  .Rand = rand.Reader
	}

	defer s.Stop()
	addr, err := net.ResolveTCPAddr("tcp4", fmt.Sprintf("%v:%v", cfg.Ip4address, cfg.Ip4port))
	if err != nil {
		log.LogError("Failed to build tcp4 address: %v", err)
		// TODO More graceful early-shutdown procedure
		//panic(err)
		s.Stop()
		return
	}

	// Start listening for SMTP connections
	log.LogInfo("SMTP listening on TCP4 %v", addr)
	s.listener, err = net.ListenTCP("tcp4", addr)
	if err != nil {
		log.LogError("SMTP failed to start tcp4 listener: %v", err)
		// TODO More graceful early-shutdown procedure
		//panic(err)
		s.Stop()
		return
	}

	//Connect database
	s.Store.StorageConnect()

	var tempDelay time.Duration
	var clientId int64

	// Handle incoming connections
	for clientId = 1; ; clientId++ {
		if conn, err := s.listener.Accept(); err != nil {
			if nerr, ok := err.(net.Error); ok && nerr.Temporary() {
				// Temporary error, sleep for a bit and try again
				if tempDelay == 0 {
					tempDelay = 5 * time.Millisecond
				} else {
					tempDelay *= 2
				}
				if max := 1 * time.Second; tempDelay > max {
					tempDelay = max
				}
				log.LogError("SMTP accept error: %v; retrying in %v", err, tempDelay)
				time.Sleep(tempDelay)
				continue
			} else {
				if s.shutdown {
					log.LogTrace("SMTP listener shutting down on request")
					return
				}
				// TODO Implement a max error counter before shutdown?
				// or maybe attempt to restart smtpd
				panic(err)
			}
		} else {
			tempDelay = 0
			s.waitgroup.Add(1)
			log.LogInfo("There are now %s serving goroutines", strconv.Itoa(runtime.NumGoroutine()))
			host, _, _ := net.SplitHostPort(conn.RemoteAddr().String())

			s.sem <- 1 // Wait for active queue to drain.
			go s.handleClient(&Client{
				state:      1,
				server:     s,
				conn:       conn,
				remoteHost: host,
				time:       time.Now().Unix(),
				bufin:      bufio.NewReader(conn),
				bufout:     bufio.NewWriter(conn),
				id:         clientId,
			})
		}
	}
}