/
leaptransport.go
231 lines (150 loc) · 3.51 KB
/
leaptransport.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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
package yunti_core
import "net"
import "golang.org/x/net/websocket"
import "net/url"
import "golang.org/x/crypto/sha3"
import "encoding/base64"
import "strings"
type leaptransp_stage int
const (
leaptransp_stage_NULL leaptransp_stage = iota
leaptransp_stage_initialized
leaptransp_stage_connected
leaptransp_stage_serverauthdone
leaptransp_stage_clientauthdone
leaptransp_stage_syncconnest
leaptransp_stage_asyncconnest
leaptransp_stage_failed
)
type leaptransp_binarymode int
const (
leaptransp_binarymode_NULL leaptransp_binarymode = iota
leaptransp_binarymode_not_binary
leaptransp_binarymode_Switching_localsent
//usually it is client to send switch request if leaptransp is not forced to be binary
leaptransp_binarymode_binary
)
type Leaptransp struct{
Leaptype string
Stage leaptransp_stage
Sync bool
conn interface
binary int
}
type Leapauth struct{
Authtype string
AuthKey string
Id string
}
type LeapConnConf struct{
}
func leaptransp_websocket_Connect_genorigin(wsaddr string)string{
oriu,_:=url.Parse(wsaddr)
switch strings.ToUpper(oriu.Scheme){
case "WSS":
oriu.Scheme="https"
case "WS":
oriu.Scheme="http"
}
origin=oriu.String()
return origin
}
func (lt *leaptransp)Leaptransp_websocket_Connect(wsaddr string)int{
origin:=leaptransp_websocket_Connect_genorigin(wsaddr)
wsc,err:=websocket.Dial(wsaddr, "", origin)
if err != nil {
return -1
}
lt.conn=&wsc
}
func (lt *leaptransp)SendT(dt string)int{
switch lt.Leaptype {
case "websocket":
lt.conn.Message.Send(dt)
default:
return -1
}
}
func (lt *leaptransp)RecvT(dt *string)int{
switch lt.Leaptype {
case "websocket":
lt.conn.Message.Receive(dt)
default:
return -1
}
}
func (lt *leaptransp)SendB(dt []byte)int{
switch lt.Leaptype {
case "websocket":
lt.conn.Message.Send(dt)
default:
return -1
}
}
func (lt *leaptransp)RecvB(dt *[]byte)int{
switch lt.Leaptype {
case "websocket":
lt.conn.Message.Receive(dt)
default:
return -1
}
}
func Leaptransp_auth_simple_password_constructMsgAsT(la *Leapauth)string{
s:= la.AuthKey +"!+AUTH"
x:=sha3.Sum512([]byte(s))
d:=make([]byte,0,64)
d:=append(d,x...)
o:=base64.StdEncoding.EncodeToString(d)
oo:="AUTH@simple_password@"+la.Id+"@"+o
return oo
}
func (lt *leaptransp)Leaptransp_auth(la Leapauth)int{
switch la.Authtype {
case "simple_password":
lt.SendT(Leaptransp_auth_simple_password_constructMsgAsT(la))
default:
return -1
}
}
func Leaptransp_authV_simple_password(la *map[string]Leapauths,un,p6 string)int{
if lu,ok:=Leapauths[un];ok{
s:= lu.AuthKey +"!+AUTH"
x:=sha3.Sum512([]byte(s))
d:=make([]byte,0,64)
d:=append(d,x...)
o:=base64.StdEncoding.EncodeToString(d)
if o==p6 {
return 0 //auth ok
}
}else{
return 1 //password isn't correct
}
}else{
return -1 //no such user
}
func (lt *leaptransp)Leaptransp_authV(la *map[string]Leapauths, incD string )string{
ins:=string.Split(incD,"@")
switch ins[1]{
case "simple_password":
Leaptransp_authV_simple_password(la,ins[2],ins[3])
default:
return 0
}
}
func (lt *leaptransp)Leaptransp_SwitchToBinarymode()int{ //only for async connection
return -2 // TODO
}
func (lt *leaptransp)Leaptransp_NewLeapSyncConn(target, tunnel string,Advopt LeapConnConf)int{
u,err:= url.Parse(tunnel)
if err!=nil {
return -1; // url isn't understandable
}
switch u.Scheme {
case "wss":
lt.Stage=leaptransp_stage_initialized
lt.Leaptransp_websocket_Connect(tunnel)
lt.Stage=leaptransp_stage_connected
default:
return -2 //not support
}
}