-
Notifications
You must be signed in to change notification settings - Fork 0
/
service.go
135 lines (113 loc) · 2.39 KB
/
service.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
package tsweb
import (
"context"
"crypto/tls"
"net"
"net/http"
"os"
"strings"
"time"
"tailscale.com/client/tailscale"
"tailscale.com/ipn/ipnstate"
"tailscale.com/tsnet"
)
type Service struct {
*tsnet.Server
}
func Start(s *tsnet.Server) (*Service, error) {
// ensure state dir exists
if d := s.Dir; d != "" {
if _, err := os.Stat(d); err != nil {
if err := os.MkdirAll(d, 0700); err != nil {
return nil, err
}
}
}
if err := s.Start(); err != nil {
return nil, err
}
return &Service{
Server: s,
}, nil
}
func (s *Service) WaitUntilReady(ctx context.Context) error {
c, err := s.LocalClient()
if err != nil {
return err
}
if _, err := waitUntilReady(ctx, c); err != nil {
return err
}
return nil
}
func waitUntilReady(
ctx context.Context,
c *tailscale.LocalClient,
) (*ipnstate.Status, error) {
for {
status, err := c.Status(ctx)
if err != nil {
return nil, err
}
if status.BackendState == "Running" {
return status, nil
}
time.Sleep(100 * time.Millisecond)
}
}
func (s *Service) ListenTLS(network string, addr string) (net.Listener, error) {
c, err := s.LocalClient()
if err != nil {
return nil, err
}
l, err := s.Listen(network, addr)
if err != nil {
return nil, err
}
return tls.NewListener(l, &tls.Config{
GetCertificate: func(hi *tls.ClientHelloInfo) (*tls.Certificate, error) {
return c.GetCertificate(hi)
},
}), nil
}
func (s *Service) GetDNSName(ctx context.Context) (string, error) {
c, err := s.LocalClient()
if err != nil {
return "", err
}
status, err := waitUntilReady(ctx, c)
if err != nil {
return "", err
}
return strings.TrimRight(status.Self.DNSName, "."), nil
}
func (s *Service) RedirectHTTP(ctx context.Context) error {
c, err := s.LocalClient()
if err != nil {
return err
}
status, err := waitUntilReady(ctx, c)
if err != nil {
return err
}
l, err := s.Server.Listen("tcp", ":80")
if err != nil {
return err
}
defer l.Close()
host, _, _ := strings.Cut(status.Self.DNSName, ".")
fqdn := strings.TrimRight(status.Self.DNSName, ".")
return http.Serve(
l,
http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
switch r.Host {
case host, fqdn:
u := *r.URL
u.Host = fqdn
u.Scheme = "https"
http.Redirect(w, r, u.String(), http.StatusPermanentRedirect)
default:
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
}
}))
}