-
Notifications
You must be signed in to change notification settings - Fork 4.6k
/
vmessin.go
158 lines (129 loc) · 4.35 KB
/
vmessin.go
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
146
147
148
149
150
151
152
153
154
155
156
157
158
package vmess
import (
"crypto/md5"
"io"
"net"
"sync"
"github.com/v2ray/v2ray-core/app"
"github.com/v2ray/v2ray-core/common/alloc"
v2io "github.com/v2ray/v2ray-core/common/io"
"github.com/v2ray/v2ray-core/common/log"
v2net "github.com/v2ray/v2ray-core/common/net"
"github.com/v2ray/v2ray-core/common/retry"
"github.com/v2ray/v2ray-core/proxy"
"github.com/v2ray/v2ray-core/proxy/vmess/config"
"github.com/v2ray/v2ray-core/proxy/vmess/protocol"
"github.com/v2ray/v2ray-core/proxy/vmess/protocol/user"
)
type VMessInboundHandler struct {
dispatcher app.PacketDispatcher
clients user.UserSet
accepting bool
udpEnabled bool
}
func NewVMessInboundHandler(dispatcher app.PacketDispatcher, clients user.UserSet, udpEnabled bool) *VMessInboundHandler {
return &VMessInboundHandler{
dispatcher: dispatcher,
clients: clients,
udpEnabled: udpEnabled,
}
}
func (handler *VMessInboundHandler) Listen(port uint16) error {
listener, err := net.ListenTCP("tcp", &net.TCPAddr{
IP: []byte{0, 0, 0, 0},
Port: int(port),
Zone: "",
})
if err != nil {
log.Error("Unable to listen tcp port %d: %v", port, err)
return err
}
handler.accepting = true
go handler.AcceptConnections(listener)
if handler.udpEnabled {
handler.ListenUDP(port)
}
return nil
}
func (handler *VMessInboundHandler) AcceptConnections(listener *net.TCPListener) error {
for handler.accepting {
retry.Timed(100 /* times */, 100 /* ms */).On(func() error {
connection, err := listener.AcceptTCP()
if err != nil {
log.Error("Failed to accpet connection: %s", err.Error())
return err
}
go handler.HandleConnection(connection)
return nil
})
}
return nil
}
func (handler *VMessInboundHandler) HandleConnection(connection *net.TCPConn) error {
defer connection.Close()
connReader := v2net.NewTimeOutReader(120, connection)
requestReader := protocol.NewVMessRequestReader(handler.clients)
request, err := requestReader.Read(connReader)
if err != nil {
log.Access(connection.RemoteAddr().String(), "", log.AccessRejected, err.Error())
log.Warning("VMessIn: Invalid request from (%s): %v", connection.RemoteAddr().String(), err)
return err
}
log.Access(connection.RemoteAddr().String(), request.Address.String(), log.AccessAccepted, "")
log.Debug("VMessIn: Received request for %s", request.Address.String())
ray := handler.dispatcher.DispatchToOutbound(v2net.NewPacket(request.Destination(), nil, true))
input := ray.InboundInput()
output := ray.InboundOutput()
var readFinish, writeFinish sync.Mutex
readFinish.Lock()
writeFinish.Lock()
go handleInput(request, connReader, input, &readFinish)
responseKey := md5.Sum(request.RequestKey)
responseIV := md5.Sum(request.RequestIV)
responseWriter, err := v2io.NewAesEncryptWriter(responseKey[:], responseIV[:], connection)
if err != nil {
log.Error("VMessIn: Failed to create encrypt writer: %v", err)
return err
}
// Optimize for small response packet
buffer := alloc.NewLargeBuffer().Clear()
buffer.Append(request.ResponseHeader)
if data, open := <-output; open {
buffer.Append(data.Value)
data.Release()
responseWriter.Write(buffer.Value)
buffer.Release()
go handleOutput(request, responseWriter, output, &writeFinish)
writeFinish.Lock()
}
connection.CloseWrite()
readFinish.Lock()
return nil
}
func handleInput(request *protocol.VMessRequest, reader io.Reader, input chan<- *alloc.Buffer, finish *sync.Mutex) {
defer close(input)
defer finish.Unlock()
requestReader, err := v2io.NewAesDecryptReader(request.RequestKey, request.RequestIV, reader)
if err != nil {
log.Error("VMessIn: Failed to create decrypt reader: %v", err)
return
}
v2net.ReaderToChan(input, requestReader)
}
func handleOutput(request *protocol.VMessRequest, writer io.Writer, output <-chan *alloc.Buffer, finish *sync.Mutex) {
v2net.ChanToWriter(writer, output)
finish.Unlock()
}
type VMessInboundHandlerFactory struct {
}
func (factory *VMessInboundHandlerFactory) Create(dispatcher app.PacketDispatcher, rawConfig interface{}) (proxy.InboundConnectionHandler, error) {
config := rawConfig.(config.Inbound)
allowedClients := user.NewTimedUserSet()
for _, user := range config.AllowedUsers() {
allowedClients.AddUser(user)
}
return NewVMessInboundHandler(dispatcher, allowedClients, config.UDPEnabled()), nil
}
func init() {
proxy.RegisterInboundConnectionHandlerFactory("vmess", &VMessInboundHandlerFactory{})
}