/
p2p.go
502 lines (433 loc) · 13.2 KB
/
p2p.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
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
package go_ipfs_p2p
import (
"bytes"
"context"
"encoding/base64"
"errors"
"fmt"
ds "github.com/ipfs/go-datastore"
dsync "github.com/ipfs/go-datastore/sync"
ipfsp2p "github.com/ipfs/go-ipfs/p2p"
"github.com/libp2p/go-libp2p"
connmgr "github.com/libp2p/go-libp2p-connmgr"
"github.com/libp2p/go-libp2p-core/crypto"
"github.com/libp2p/go-libp2p-core/host"
"github.com/libp2p/go-libp2p-core/peer"
pstore "github.com/libp2p/go-libp2p-core/peerstore"
"github.com/libp2p/go-libp2p-core/pnet"
"github.com/libp2p/go-libp2p-core/protocol"
"github.com/libp2p/go-libp2p-core/routing"
dht "github.com/libp2p/go-libp2p-kad-dht"
rhost "github.com/libp2p/go-libp2p/p2p/host/routed"
ma "github.com/multiformats/go-multiaddr"
madns "github.com/multiformats/go-multiaddr-dns"
"github.com/samber/lo"
"math/rand"
"regexp"
"strconv"
"time"
)
var resolveTimeout = 10 * time.Second
// NewRoutedHost create a p2p routing client
func newRoutedHost(listenPort int, privstr string, swarmkey []byte, peers []string) (host.Host, *rhost.RoutedHost, *dht.IpfsDHT, error) {
ctx := context.Background()
skbytes, err := base64.StdEncoding.DecodeString(privstr)
if err != nil {
fmt.Println(err)
return nil, nil, nil, err
}
priv, err := crypto.UnmarshalPrivateKey(skbytes)
if err != nil {
fmt.Println(err)
return nil, nil, nil, err
}
bootstrapPeers := convertPeers(peers)
// load private key swarm.key
psk, err := pnet.DecodeV1PSK(bytes.NewReader(swarmkey))
if err != nil {
return nil, nil, nil, fmt.Errorf("failed to configure private network: %s", err)
}
// Generate a key pair for this host. We will use it at least
// to obtain a valid host ID.
opts := []libp2p.Option{
libp2p.Identity(priv),
libp2p.ListenAddrStrings(fmt.Sprintf("/ip4/0.0.0.0/tcp/%d", listenPort)),
libp2p.DefaultTransports,
libp2p.DefaultMuxers,
libp2p.DefaultSecurity,
libp2p.NATPortMap(),
libp2p.PrivateNetwork(psk),
libp2p.ConnectionManager(connmgr.NewConnManager(
100, // Lowwater
400, // HighWater,
time.Minute, // GracePeriod
)),
libp2p.Routing(func(h host.Host) (routing.PeerRouting, error) {
idht, err := dht.New(ctx, h)
return idht, err
}),
libp2p.EnableAutoRelay(),
// If you want to help other peers to figure out if they are behind
// NATs, you can launch the server-side of AutoNAT too (AutoRelay
// already runs the client)
//
// This service is highly rate-limited and should not cause any
// performance issues.
libp2p.EnableNATService(),
}
basicHost, err := libp2p.New(ctx, opts...)
if err != nil {
return nil, nil, nil, err
}
// Construct a datastore (needed by the DHT). This is just a simple, in-memory thread-safe datastore.
dstore := dsync.MutexWrap(ds.NewMapDatastore())
// Make the DHT
DHT := dht.NewDHT(ctx, basicHost, dstore)
// Make the routed host
routedHost := rhost.Wrap(basicHost, DHT)
cfg := DefaultBootstrapConfig
cfg.BootstrapPeers = func() []peer.AddrInfo {
return bootstrapPeers
}
id, err := peer.IDFromPrivateKey(priv)
_, err = Bootstrap(id, routedHost, DHT, cfg)
// connect to the chosen ipfs nodes
if err != nil {
return nil, nil, nil, err
}
// Bootstrap the host
err = DHT.Bootstrap(ctx)
if err != nil {
return nil, nil, nil, err
}
// Build host multiaddress
hostAddr, _ := ma.NewMultiaddr(fmt.Sprintf("/ipfs/%s", routedHost.ID().Pretty()))
// Now we can build a full multiaddress to reach this host
// by encapsulating both addresses:
// addr := routedHost.Addrs()[0]
addrs := routedHost.Addrs()
fmt.Println("I can be reached at:")
for _, addr := range addrs {
fmt.Println(addr.Encapsulate(hostAddr))
}
return basicHost, routedHost, DHT, nil
}
// MakeIpfsP2p create ipfs p2p object
func newIpfsP2p(h host.Host) *ipfsp2p.P2P {
return ipfsp2p.New(h.ID(), h, h.Peerstore())
}
// P2pClient p2p client
type P2pClient struct {
Host host.Host
P2P *ipfsp2p.P2P
DHT *dht.IpfsDHT
RoutedHost *rhost.RoutedHost
Peers []string
}
func NewP2pClient(listenPort int, privstr string, swarmkey string, peers []string) (*P2pClient, error) {
host, routedHost, DHT, err := newRoutedHost(listenPort, privstr, []byte(swarmkey), peers)
if err != nil {
return nil, err
}
P2P := newIpfsP2p(host)
return &P2pClient{
Host: host,
P2P: P2P,
DHT: DHT,
RoutedHost: routedHost,
Peers: peers,
}, nil
}
// P2PListenerInfoOutput p2p monitoring or mapping information
type P2PListenerInfoOutput struct {
Protocol string
ListenAddress string
TargetAddress string
}
// P2PLsOutput p2p monitor or map information output
type P2PLsOutput struct {
Listeners []P2PListenerInfoOutput
}
// List p2p monitor message list
func (c *P2pClient) List() *P2PLsOutput {
output := &P2PLsOutput{}
c.P2P.ListenersLocal.Lock()
for _, listener := range c.P2P.ListenersLocal.Listeners {
output.Listeners = append(output.Listeners, P2PListenerInfoOutput{
Protocol: string(listener.Protocol()),
ListenAddress: listener.ListenAddress().String(),
TargetAddress: listener.TargetAddress().String(),
})
}
c.P2P.ListenersLocal.Unlock()
c.P2P.ListenersP2P.Lock()
for _, listener := range c.P2P.ListenersP2P.Listeners {
output.Listeners = append(output.Listeners, P2PListenerInfoOutput{
Protocol: string(listener.Protocol()),
ListenAddress: listener.ListenAddress().String(),
TargetAddress: listener.TargetAddress().String(),
})
}
c.P2P.ListenersP2P.Unlock()
return output
}
// Listen map local ports to p2p networks
func (c *P2pClient) Listen(proto, targetOpt string) error {
fmt.Println("listening for connections")
//targetOpt := fmt.Sprintf("/ip4/127.0.0.1/tcp/%d", port)
protoId := protocol.ID(proto)
target, err := ma.NewMultiaddr(targetOpt)
if err != nil {
fmt.Println(err)
}
_, err = c.P2P.ForwardRemote(context.Background(), protoId, target, false)
fmt.Println("local port" + targetOpt + ",mapping to p2p network succeeded")
return err
}
// Forward connect p2p network to remote nodes / map to local port
func (c *P2pClient) Forward(protoOpt string, port int, peerId string) error {
if peerId == "" {
return fmt.Errorf("peer id cannot be empty")
}
if err := c.CheckForwardHealth(protoOpt, peerId); err != nil {
// recover
defer func() {
if r := recover(); r != nil {
fmt.Println("Recovered in f", r)
}
}()
fmt.Println("CheckForwardHealth:", peerId)
fmt.Println("c.Peers:", c.Peers)
bootstrapPeers := randomSubsetOfPeers(convertPeers(c.Peers), 1)
if len(bootstrapPeers) == 0 {
return errors.New("not enough bootstrap peers")
}
circuitPeerId := bootstrapPeers[0].ID.Pretty()
err = c.ConnectCircuit(circuitPeerId, peerId)
if err != nil {
return err
}
}
listenOpt := fmt.Sprintf("/ip4/127.0.0.1/tcp/%d", port)
targetOpt := fmt.Sprintf("/p2p/%s", peerId)
listen, err := ma.NewMultiaddr(listenOpt)
if err != nil {
fmt.Println(err)
return err
}
targetAddrInfo, err := parseIpfsAddr(targetOpt)
protoId := protocol.ID(protoOpt)
c.P2P.ListenersP2P.Lock()
defer c.P2P.ListenersP2P.Unlock()
target, err := ma.NewMultiaddr(targetOpt)
listeners := c.filterListener(c.P2P.ListenersLocal, func(listener ipfsp2p.Listener) bool {
return listener.Protocol() == protoId && listener.ListenAddress().String() == listen.String() && listener.TargetAddress().String() == target.String()
})
if len(listeners) > 0 {
return nil
}
err = forwardLocal(context.Background(), c.P2P, c.Host.Peerstore(), protoId, listen, targetAddrInfo)
if err != nil {
fmt.Println(err)
return err
}
fmt.Println("======================")
fmt.Println("forward : protoOpt: ", protoOpt)
fmt.Println("forward : port: ", port)
fmt.Println("forward : peerId: ", peerId)
fmt.Println("======================")
fmt.Println("remote_node" + peerId + ",forward to" + listenOpt + "success")
return err
}
// CheckForwardHealth check if the remote node is connected
func (c *P2pClient) CheckForwardHealth(proto, peerId string) error {
targetOpt := fmt.Sprintf("/p2p/%s", peerId)
targets, err := parseIpfsAddr(targetOpt)
protoId := protocol.ID(proto)
if err != nil {
return err
}
cctx, cancel := context.WithTimeout(context.Background(), time.Second*30) //TODO: configurable?
defer cancel()
stream, err := (c.Host).NewStream(cctx, targets.ID, protoId)
if err != nil {
return err
} else {
stream.Close()
return nil
}
}
func (c *P2pClient) filterListener(listeners *ipfsp2p.Listeners, matchFunc func(listener ipfsp2p.Listener) bool) []ipfsp2p.Listener {
todo := make([]ipfsp2p.Listener, 0)
for _, l := range listeners.Listeners {
if matchFunc(l) {
todo = append(todo, l)
}
}
return todo
}
func (c *P2pClient) ConnectCircuit(circuitPeer, targetPeer string) error {
maddr := ma.StringCast(fmt.Sprintf("/p2p/%s/p2p-circuit/p2p/%s", circuitPeer, targetPeer))
pi, err := peer.AddrInfoFromP2pAddr(maddr)
if err != nil {
return err
}
err = c.Host.Connect(context.Background(), *pi)
if err != nil {
return err
}
return nil
}
// Close turn off p2p listening connection
func (c *P2pClient) Close(target string) (int, error) {
targetAddress, err := ma.NewMultiaddr(target)
if err != nil {
return 0, err
}
match := func(listener ipfsp2p.Listener) bool {
if !targetAddress.Equal(listener.TargetAddress()) {
return false
}
return true
}
done := c.P2P.ListenersLocal.Close(match)
done += c.P2P.ListenersP2P.Close(match)
return done, nil
}
// Destroy: destroy and close the p2p client, including all subordinate listeners, stream objects
func (c *P2pClient) Destroy() error {
for _, stream := range c.P2P.Streams.Streams {
c.P2P.Streams.Close(stream)
}
match := func(listener ipfsp2p.Listener) bool {
return true
}
c.P2P.ListenersP2P.Close(match)
c.P2P.ListenersLocal.Close(match)
err := (c.Host).Close()
c.P2P = nil
c.Host = nil
return err
}
// forwardLocal forwards local connections to a libp2p service
func forwardLocal(ctx context.Context, p *ipfsp2p.P2P, ps pstore.Peerstore, proto protocol.ID, bindAddr ma.Multiaddr, addr *peer.AddrInfo) error {
ps.AddAddrs(addr.ID, addr.Addrs, pstore.TempAddrTTL)
// TODO: return some info
_, err := p.ForwardLocal(ctx, addr.ID, proto, bindAddr)
return err
}
// parseIpfsAddr is a function that takes in addr string and return ipfsAddrs
func parseIpfsAddr(addr string) (*peer.AddrInfo, error) {
multiaddr, err := ma.NewMultiaddr(addr)
if err != nil {
return nil, err
}
pi, err := peer.AddrInfoFromP2pAddr(multiaddr)
if err == nil {
return pi, nil
}
// resolve multiaddr whose protocol is not ma.P_IPFS
ctx, cancel := context.WithTimeout(context.Background(), resolveTimeout)
defer cancel()
addrs, err := madns.Resolve(ctx, multiaddr)
if err != nil {
return nil, err
}
if len(addrs) == 0 {
return nil, errors.New("fail to resolve the multiaddr:" + multiaddr.String())
}
var info peer.AddrInfo
for _, addr := range addrs {
taddr, id := peer.SplitAddr(addr)
if id == "" {
// not an ipfs addr, skipping.
continue
}
switch info.ID {
case "":
info.ID = id
case id:
default:
return nil, fmt.Errorf(
"ambiguous multiaddr %s could refer to %s or %s",
multiaddr,
info.ID,
id,
)
}
info.Addrs = append(info.Addrs, taddr)
}
return &info, nil
}
func (s *P2pClient) ForwardWithRandomPort(peerId string) (string, string, error) {
list, err := s.ListListen()
if err != nil {
fmt.Println("创建容器部署指令失败")
fmt.Println("查询p2p 列表失败")
return "", "", err
}
t, find := lo.Find(list, func(item *ListenReply) bool {
if item == nil {
return false
}
return item.TargetAddress == fmt.Sprintf("/p2p/%s", peerId)
})
if find {
listenAddress := t.ListenAddress
// 定义正则表达式模式,用于匹配IP地址和端口号
pattern := `\/ip4\/([0-9]+\.[0-9]+\.[0-9]+\.[0-9]+)\/tcp\/([0-9]+)`
// 编译正则表达式
regex := regexp.MustCompile(pattern)
// 使用正则表达式来提取IP地址和端口号
matches := regex.FindStringSubmatch(listenAddress)
if len(matches) >= 3 {
ip := matches[1] // 第一个匹配组为IP地址
port := matches[2] // 第二个匹配组为端口号
fmt.Printf("IP地址: %s\n", ip)
fmt.Printf("端口号: %s\n", port)
return ip, port, nil
} else {
fmt.Println("无法提取IP地址和端口号")
}
}
listenIp := "127.0.0.1"
listenPort := rand.Intn(9999) + 30000
if err != nil {
return "", "", err
}
proto := "/x/ssh"
err = s.Forward(proto, listenPort, peerId)
if err != nil {
fmt.Println("创建容器部署指令失败")
fmt.Println(err)
return "", "", err
}
return listenIp, strconv.Itoa(listenPort), err
}
func (s *P2pClient) ListListen() ([]*ListenReply, error) {
var output []*ListenReply
s.P2P.ListenersLocal.Lock()
for _, listener := range s.P2P.ListenersLocal.Listeners {
output = append(output, &ListenReply{
Protocol: string(listener.Protocol()),
ListenAddress: listener.ListenAddress().String(),
TargetAddress: listener.TargetAddress().String(),
})
}
s.P2P.ListenersLocal.Unlock()
s.P2P.ListenersP2P.Lock()
for _, listener := range s.P2P.ListenersP2P.Listeners {
output = append(output, &ListenReply{
Protocol: string(listener.Protocol()),
ListenAddress: listener.ListenAddress().String(),
TargetAddress: listener.TargetAddress().String(),
})
}
s.P2P.ListenersP2P.Unlock()
return output, nil
}
type ListenReply struct {
Protocol string
ListenAddress string
TargetAddress string
}