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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
package main
import (
"errors"
"log"
"net"
"os"
"os/signal"
"sync"
"syscall"
"github.com/HimbeerserverDE/mt-multiserver-proxy"
"github.com/anon55555/mt"
)
func main() {
if err := proxy.LoadConfig(); err != nil {
log.Fatal("{←|⇶} ", err)
}
if !proxy.Conf().NoPlugins {
proxy.LoadPlugins()
}
var err error
switch proxy.Conf().AuthBackend {
case "sqlite3":
proxy.SetAuthBackend(proxy.AuthSQLite3{})
default:
log.Fatal("{←|⇶} invalid auth backend")
}
addr, err := net.ResolveUDPAddr("udp", proxy.Conf().BindAddr)
if err != nil {
log.Fatal("{←|⇶} ", err)
}
pc, err := net.ListenUDP("udp", addr)
if err != nil {
log.Fatal("{←|⇶} ", err)
}
l := proxy.Listen(pc)
defer l.Close()
log.Print("{←|⇶} listen ", l.Addr())
go func() {
sig := make(chan os.Signal, 1)
signal.Notify(sig, os.Interrupt, syscall.SIGTERM, syscall.SIGHUP)
<-sig
clts := l.Clts()
var wg sync.WaitGroup
wg.Add(len(clts))
for cc := range clts {
go func(cc *proxy.ClientConn) {
ack, _ := cc.SendCmd(&mt.ToCltDisco{Reason: mt.Shutdown})
select {
case <-cc.Closed():
case <-ack:
cc.Close()
}
wg.Done()
}(cc)
}
wg.Wait()
os.Exit(0)
}()
for {
cc, err := l.Accept()
if err != nil {
if errors.Is(err, net.ErrClosed) {
log.Print("{←|⇶} stop listening")
break
}
log.Print("{←|⇶} ", err)
continue
}
go func() {
<-cc.Init()
cc.Log("<->", "handshake completed")
if len(proxy.Conf().Servers) == 0 {
cc.Log("<--", "no servers")
ack, _ := cc.SendCmd(&mt.ToCltDisco{
Reason: mt.Custom,
Custom: "No servers are configured.",
})
select {
case <-cc.Closed():
case <-ack:
cc.Close()
}
return
}
addr, err := net.ResolveUDPAddr("udp", proxy.Conf().Servers[0].Addr)
if err != nil {
cc.Log("<--", "address resolution fail")
ack, _ := cc.SendCmd(&mt.ToCltDisco{
Reason: mt.Custom,
Custom: "Server address resolution failed.",
})
select {
case <-cc.Closed():
case <-ack:
cc.Close()
}
return
}
conn, err := net.DialUDP("udp", nil, addr)
if err != nil {
cc.Log("<--", "connection fail")
ack, _ := cc.SendCmd(&mt.ToCltDisco{
Reason: mt.Custom,
Custom: "Server connection failed.",
})
select {
case <-cc.Closed():
case <-ack:
cc.Close()
}
return
}
proxy.Connect(conn, proxy.Conf().Servers[0].Name, cc)
}()
}
select {}
}
|
