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// Copyright 2017-2025 WIT.COM Inc. All rights reserved.
// Use of this source code is governed by the GPL 3.0
package main
import (
"embed"
"fmt"
"io"
"net"
"os"
"time"
"go.wit.com/dev/alexflint/arg"
"go.wit.com/gui"
"go.wit.com/log"
)
var VERSION string
var BUILDTIME string
//go:embed resources/*
var resources embed.FS
func main() {
var pp *arg.Parser
gui.InitArg()
pp = arg.MustParse(&argv)
if pp == nil {
pp.WriteHelp(os.Stdout)
os.Exit(0)
}
me = new(gusconf)
me.pollDelay = 10 * time.Second
me.portmaps = ConfigLoad()
if me.portmaps == nil {
me.portmaps = NewPortmaps()
p := new(Portmap)
p.Connect = "testing:323"
me.portmaps.Append(p)
}
if argv.Daemon {
// turn off timestamps for STDOUT (systemd adds them)
log.DaemonMode(true)
startHTTP()
os.Exit(0)
}
if gui.NoGui() {
all := me.portmaps.All()
for all.Scan() {
pm := all.Next()
if !pm.Enabled {
continue
}
log.Info("portmap enabled for port", pm.Listen, "to", pm.Connect)
go gus3000(int(pm.Listen), pm.Connect)
}
// startHTTP()
os.Exit(0)
}
// go NewWatchdog()
go startHTTP()
doGui()
}
func gus3000(port int, connect string) {
// Listen on local port 3000
s := fmt.Sprintf("0.0.0.0:%d", port)
listener, err := net.Listen("tcp", s)
if err != nil {
log.Fatalf("Failed to listen on %s: %v", s, err)
}
defer listener.Close()
log.Info("Listening on ", s)
for {
// Accept incoming connection
clientConn, err := listener.Accept()
if err != nil {
log.Printf("Failed to accept client connection: %v", err)
continue
}
// log.Printf("Client connected: %s", clientConn.RemoteAddr())
// Handle the connection in a separate goroutine
go handleConnection(clientConn, connect)
}
}
func handleConnection(clientConn net.Conn, where string) {
defer clientConn.Close()
// Connect to the target server
// targetConn, err := net.Dial("tcp", "go.wit.com:80")
targetConn, err := net.Dial("tcp", where)
if err != nil {
log.Printf("Failed to connect to %s %v", where, err)
return
}
defer targetConn.Close()
log.Printf("Connected to target server: %s where = %s\n", targetConn.RemoteAddr(), where)
// Bidirectional copy of data
go io.Copy(targetConn, clientConn) // Client -> Target
io.Copy(clientConn, targetConn) // Target -> Client
}
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