1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// 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"
"github.com/google/uuid"
"go.wit.com/dev/alexflint/arg"
"go.wit.com/gui"
"go.wit.com/log"
timestamppb "google.golang.org/protobuf/types/known/timestamppb"
)
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)
}
log.Info("tmp hack", uuid.New().String())
me = new(gusconf)
me.pollDelay = 10 * time.Second
me.portmaps = ConfigLoad()
me.events = EventLoad()
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)
log.Printf("Connected to client: %s where = %s\n", clientConn.RemoteAddr(), where)
e := new(Event)
e.Address = fmt.Sprintf("%s\n", clientConn.RemoteAddr())
e.Where = where
e.Ctime = timestamppb.New(time.Now())
me.events.Append(e)
// Bidirectional copy of data
go io.Copy(targetConn, clientConn) // Client -> Target
io.Copy(clientConn, targetConn) // Target -> Client
e.Etime = timestamppb.New(time.Now())
}
|
