-
Notifications
You must be signed in to change notification settings - Fork 5.4k
/
control.go
410 lines (391 loc) · 10.9 KB
/
control.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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
package client
import (
"encoding/base64"
"encoding/binary"
"errors"
"github.com/cnlh/nps/lib/common"
"github.com/cnlh/nps/lib/config"
"github.com/cnlh/nps/lib/conn"
"github.com/cnlh/nps/lib/crypt"
"github.com/cnlh/nps/lib/version"
"github.com/cnlh/nps/vender/github.com/astaxie/beego/logs"
"github.com/cnlh/nps/vender/github.com/ccding/go-stun/stun"
"github.com/cnlh/nps/vender/github.com/xtaci/kcp"
"github.com/cnlh/nps/vender/golang.org/x/net/proxy"
"io/ioutil"
"log"
"net"
"net/http"
"net/http/httputil"
"net/url"
"os"
"path/filepath"
"strconv"
"strings"
"time"
)
func GetTaskStatus(path string) {
cnf, err := config.NewConfig(path)
if err != nil {
log.Fatalln(err)
}
c, err := NewConn(cnf.CommonConfig.Tp, cnf.CommonConfig.VKey, cnf.CommonConfig.Server, common.WORK_CONFIG, cnf.CommonConfig.ProxyUrl)
if err != nil {
log.Fatalln(err)
}
if _, err := c.Write([]byte(common.WORK_STATUS)); err != nil {
log.Fatalln(err)
}
//read now vKey and write to server
if f, err := common.ReadAllFromFile(filepath.Join(common.GetTmpPath(), "npc_vkey.txt")); err != nil {
log.Fatalln(err)
} else if _, err := c.Write([]byte(crypt.Md5(string(f)))); err != nil {
log.Fatalln(err)
}
var isPub bool
binary.Read(c, binary.LittleEndian, &isPub)
if l, err := c.GetLen(); err != nil {
log.Fatalln(err)
} else if b, err := c.GetShortContent(l); err != nil {
log.Fatalln(err)
} else {
arr := strings.Split(string(b), common.CONN_DATA_SEQ)
for _, v := range cnf.Hosts {
if common.InStrArr(arr, v.Remark) {
log.Println(v.Remark, "ok")
} else {
log.Println(v.Remark, "not running")
}
}
for _, v := range cnf.Tasks {
ports := common.GetPorts(v.Ports)
if v.Mode == "secret" {
ports = append(ports, 0)
}
for _, vv := range ports {
var remark string
if len(ports) > 1 {
remark = v.Remark + "_" + strconv.Itoa(vv)
} else {
remark = v.Remark
}
if common.InStrArr(arr, remark) {
log.Println(remark, "ok")
} else {
log.Println(remark, "not running")
}
}
}
}
os.Exit(0)
}
var errAdd = errors.New("The server returned an error, which port or host may have been occupied or not allowed to open.")
func StartFromFile(path string) {
first := true
cnf, err := config.NewConfig(path)
if err != nil || cnf.CommonConfig == nil {
logs.Error("Config file %s loading error %s", path, err.Error())
os.Exit(0)
}
logs.Info("Loading configuration file %s successfully", path)
re:
if first || cnf.CommonConfig.AutoReconnection {
if !first {
logs.Info("Reconnecting...")
time.Sleep(time.Second * 5)
}
} else {
return
}
first = false
c, err := NewConn(cnf.CommonConfig.Tp, cnf.CommonConfig.VKey, cnf.CommonConfig.Server, common.WORK_CONFIG, cnf.CommonConfig.ProxyUrl)
if err != nil {
logs.Error(err)
goto re
}
var isPub bool
binary.Read(c, binary.LittleEndian, &isPub)
// get tmp password
var b []byte
vkey := cnf.CommonConfig.VKey
if isPub {
// send global configuration to server and get status of config setting
if _, err := c.SendInfo(cnf.CommonConfig.Client, common.NEW_CONF); err != nil {
logs.Error(err)
goto re
}
if !c.GetAddStatus() {
logs.Error("the web_user may have been occupied!")
goto re
}
if b, err = c.GetShortContent(16); err != nil {
logs.Error(err)
goto re
}
vkey = string(b)
}
ioutil.WriteFile(filepath.Join(common.GetTmpPath(), "npc_vkey.txt"), []byte(vkey), 0600)
//send hosts to server
for _, v := range cnf.Hosts {
if _, err := c.SendInfo(v, common.NEW_HOST); err != nil {
logs.Error(err)
goto re
}
if !c.GetAddStatus() {
logs.Error(errAdd, v.Host)
goto re
}
}
//send task to server
for _, v := range cnf.Tasks {
if _, err := c.SendInfo(v, common.NEW_TASK); err != nil {
logs.Error(err)
goto re
}
if !c.GetAddStatus() {
logs.Error(errAdd, v.Ports, v.Remark)
goto re
}
if v.Mode == "file" {
//start local file server
go startLocalFileServer(cnf.CommonConfig, v, vkey)
}
}
//create local server secret or p2p
for _, v := range cnf.LocalServer {
go startLocalServer(v, cnf.CommonConfig)
}
c.Close()
if cnf.CommonConfig.Client.WebUserName == "" || cnf.CommonConfig.Client.WebPassword == "" {
logs.Notice("web access login username:user password:%s", vkey)
} else {
logs.Notice("web access login username:%s password:%s", cnf.CommonConfig.Client.WebUserName, cnf.CommonConfig.Client.WebPassword)
}
NewRPClient(cnf.CommonConfig.Server, vkey, cnf.CommonConfig.Tp, cnf.CommonConfig.ProxyUrl, cnf).Start()
CloseLocalServer()
goto re
}
// Create a new connection with the server and verify it
func NewConn(tp string, vkey string, server string, connType string, proxyUrl string) (*conn.Conn, error) {
var err error
var connection net.Conn
var sess *kcp.UDPSession
if tp == "tcp" {
if proxyUrl != "" {
u, er := url.Parse(proxyUrl)
if er != nil {
return nil, er
}
switch u.Scheme {
case "socks5":
n, er := proxy.FromURL(u, nil)
if er != nil {
return nil, er
}
connection, err = n.Dial("tcp", server)
case "http":
connection, err = NewHttpProxyConn(u, server)
}
} else {
connection, err = net.Dial("tcp", server)
}
} else {
sess, err = kcp.DialWithOptions(server, nil, 10, 3)
if err == nil {
conn.SetUdpSession(sess)
connection = sess
}
}
if err != nil {
return nil, err
}
c := conn.NewConn(connection)
if _, err := c.Write([]byte(common.CONN_TEST)); err != nil {
return nil, err
}
if _, err := c.Write([]byte(crypt.Md5(version.GetVersion()))); err != nil {
return nil, err
}
if b, err := c.GetShortContent(32); err != nil || crypt.Md5(version.GetVersion()) != string(b) {
logs.Error("The client does not match the server version. The current version of the client is", version.GetVersion())
os.Exit(0)
}
if _, err := c.Write([]byte(common.Getverifyval(vkey))); err != nil {
return nil, err
}
if s, err := c.ReadFlag(); err != nil {
return nil, err
} else if s == common.VERIFY_EER {
logs.Error("Validation key %s incorrect", vkey)
os.Exit(0)
}
if _, err := c.Write([]byte(connType)); err != nil {
return nil, err
}
c.SetAlive(tp)
return c, nil
}
//http proxy connection
func NewHttpProxyConn(url *url.URL, remoteAddr string) (net.Conn, error) {
req := &http.Request{
Method: "CONNECT",
URL: url,
Host: remoteAddr,
Header: http.Header{},
Proto: "HTTP/1.1",
}
password, _ := url.User.Password()
req.Header.Set("Proxy-Authorization", "Basic "+basicAuth(url.User.Username(), password))
b, err := httputil.DumpRequest(req, false)
if err != nil {
return nil, err
}
proxyConn, err := net.Dial("tcp", url.Host)
if err != nil {
return nil, err
}
if _, err := proxyConn.Write(b); err != nil {
return nil, err
}
buf := make([]byte, 1024)
if _, err := proxyConn.Read(buf); err != nil {
return nil, err
}
return proxyConn, nil
}
//get a basic auth string
func basicAuth(username, password string) string {
auth := username + ":" + password
return base64.StdEncoding.EncodeToString([]byte(auth))
}
func handleP2PUdp(rAddr, md5Password, role string) (remoteAddress string, c net.PacketConn, err error) {
tmpConn, err := common.GetLocalUdpAddr()
if err != nil {
logs.Error(err)
return
}
localConn, err := newUdpConnByAddr(tmpConn.LocalAddr().String())
if err != nil {
logs.Error(err)
return
}
localKcpConn, err := kcp.NewConn(rAddr, nil, 150, 3, localConn)
if err != nil {
logs.Error(err)
return
}
conn.SetUdpSession(localKcpConn)
localToolConn := conn.NewConn(localKcpConn)
//get local nat type
//localNatType, host, err := stun.NewClient().Discover()
//if err != nil || host == nil {
// err = errors.New("get nat type error")
// return
//}
localNatType := stun.NATRestricted
//write password
if _, err = localToolConn.Write([]byte(md5Password)); err != nil {
return
}
//write role
if _, err = localToolConn.Write([]byte(role)); err != nil {
return
}
if err = binary.Write(localToolConn, binary.LittleEndian, int32(localNatType)); err != nil {
return
}
//get another type address and nat type from server
var remoteAddr []byte
var remoteNatType int32
if remoteAddr, err = localToolConn.GetShortLenContent(); err != nil {
return
}
if err = binary.Read(localToolConn, binary.LittleEndian, &remoteNatType); err != nil {
return
}
localConn.Close()
//logs.Trace("remote nat type %d,local nat type %s", remoteNatType, localNatType)
if remoteAddress, err = sendP2PTestMsg(string(remoteAddr), tmpConn.LocalAddr().String()); err != nil {
return
}
c, err = newUdpConnByAddr(tmpConn.LocalAddr().String())
return
}
func handleP2P(natType1, natType2 int, addr1, addr2 string, role string) (string, error) {
switch natType1 {
case int(stun.NATFull):
return sendP2PTestMsg(addr2, addr1)
case int(stun.NATRestricted):
switch natType2 {
case int(stun.NATFull), int(stun.NATRestricted), int(stun.NATPortRestricted), int(stun.NATSymetric):
return sendP2PTestMsg(addr2, addr1)
}
case int(stun.NATPortRestricted):
switch natType2 {
case int(stun.NATFull), int(stun.NATRestricted), int(stun.NATPortRestricted):
return sendP2PTestMsg(addr2, addr1)
}
case int(stun.NATSymetric):
switch natType2 {
case int(stun.NATFull), int(stun.NATRestricted):
return sendP2PTestMsg(addr2, addr1)
}
}
return "", errors.New("not support p2p")
}
func sendP2PTestMsg(remoteAddr string, localAddr string) (string, error) {
remoteUdpAddr, err := net.ResolveUDPAddr("udp", remoteAddr)
if err != nil {
return "", err
}
localConn, err := newUdpConnByAddr(localAddr)
defer localConn.Close()
if err != nil {
return "", err
}
buf := make([]byte, 10)
for i := 20; i > 0; i-- {
logs.Trace("try send test packet to target %s", remoteAddr)
if _, err := localConn.WriteTo([]byte(common.WORK_P2P_CONNECT), remoteUdpAddr); err != nil {
return "", err
}
localConn.SetReadDeadline(time.Now().Add(time.Millisecond * 500))
n, addr, err := localConn.ReadFromUDP(buf)
localConn.SetReadDeadline(time.Time{})
switch string(buf[:n]) {
case common.WORK_P2P_SUCCESS:
for i := 20; i > 0; i-- {
if _, err = localConn.WriteTo([]byte(common.WORK_P2P_END), addr); err != nil {
return "", err
}
}
return addr.String(), nil
case common.WORK_P2P_END:
logs.Trace("Remotely Address %s Reply Packet Successfully Received", addr.String())
return addr.String(), nil
case common.WORK_P2P_CONNECT:
go func() {
for i := 20; i > 0; i-- {
logs.Trace("try send receive success packet to target %s", remoteAddr)
if _, err = localConn.WriteTo([]byte(common.WORK_P2P_SUCCESS), addr); err != nil {
return
}
time.Sleep(time.Second)
}
}()
}
}
localConn.Close()
return "", errors.New("connect to the target failed, maybe the nat type is not support p2p")
}
func newUdpConnByAddr(addr string) (*net.UDPConn, error) {
udpAddr, err := net.ResolveUDPAddr("udp", addr)
if err != nil {
return nil, err
}
udpConn, err := net.ListenUDP("udp", udpAddr)
if err != nil {
return nil, err
}
return udpConn, nil
}