func RootStatus(w http.ResponseWriter, req *http.Request, ctx *Context) (err error) {
retentionMinutes := config.GetDataStoreConfig().RetentionMinutes
smtpListener := fmt.Sprintf("%s:%d", config.GetSmtpConfig().Ip4address.String(),
config.GetSmtpConfig().Ip4port)
pop3Listener := fmt.Sprintf("%s:%d", config.GetPop3Config().Ip4address.String(),
config.GetPop3Config().Ip4port)
webListener := fmt.Sprintf("%s:%d", config.GetWebConfig().Ip4address.String(),
config.GetWebConfig().Ip4port)
return RenderTemplate("root/status.html", w, map[string]interface{}{
"ctx": ctx,
"version": config.VERSION,
"buildDate": config.BUILD_DATE,
"retentionMinutes": retentionMinutes,
"smtpListener": smtpListener,
"pop3Listener": pop3Listener,
"webListener": webListener,
})
}
// Main listener loop
func (s *Server) Start() {
cfg := config.GetSmtpConfig()
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)
}
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)
}
if !s.storeMessages {
log.LogInfo("Load test mode active, messages will not be stored")
} else if s.domainNoStore != "" {
log.LogInfo("Messages sent to domain '%v' will be discarded", s.domainNoStore)
}
// Start retention scanner
StartRetentionScanner(s.dataStore)
// Handle incoming connections
var tempDelay time.Duration
for sid := 1; ; sid++ {
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
expConnectsTotal.Add(1)
s.waitgroup.Add(1)
go s.startSession(sid, conn)
}
}
}
func main() {
config.VERSION = VERSION
config.BUILD_DATE = BUILD_DATE
flag.Parse()
if *help {
flag.Usage()
return
}
// Load & Parse config
if flag.NArg() != 1 {
flag.Usage()
os.Exit(1)
}
err := config.LoadConfig(flag.Arg(0))
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("Inbucket %v (%v) starting...", config.VERSION, config.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 := smtpd.DefaultFileDataStore()
// Start HTTP server
web.Initialize(config.GetWebConfig(), ds)
go web.Start()
// Start POP3 server
pop3Server = pop3d.New()
go pop3Server.Start()
// Startup SMTP server, block until it exits
smtpServer = smtpd.NewSmtpServer(config.GetSmtpConfig(), ds)
smtpServer.Start()
// Wait for active connections to finish
smtpServer.Drain()
pop3Server.Drain()
}