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
|
package xmpp
import (
"crypto/tls"
"crypto/x509"
"log"
"encoding/xml"
)
type SessionConnect struct{}
type SessionDisconnect struct{}
type SessionShouldDisconnect struct{}
type session struct {
jid string
in, out chan any
transport *tls.Conn
ed encoderDecoder
rx chan xml.Token
streamEnd xml.EndElement
}
func StartSession(out chan any, jid string, pwd string) chan any {
s := session{}
s.jid = jid
s.in = make(chan any)
s.out = out
s.rx = make(chan xml.Token, 0)
go s.run()
return s.in
}
func (s *session) run() {
defer func() { s.out <- SessionDisconnect{} }()
err := s.startTransport()
if err != nil { return }
defer s.transport.Close()
s.ed = newEncoderDecoder(s)
go s.ed.run()
defer func() { s.ed.terminator <- true }()
s.openStream()
defer s.closeStreams()
s.out <- SessionConnect{}
for {
select {
case data := <-s.in:
switch data.(type) {
case SessionShouldDisconnect: return
default: log.Printf("Unknown data '%d'!\n", data)
}
case _ = <-s.rx:
// TODO route received XML token here
}
}
}
func (s *session) startTransport() error {
domain := domainpart(s.jid)
roots, err := x509.SystemCertPool()
if err != nil {
log.Println(err)
return err
}
s.transport, err = tls.Dial("tcp", domain+":"+"5223", &tls.Config{RootCAs: roots})
if err != nil {
log.Println(err)
return err
}
return nil
}
func (s *session) openStream() {
start := xml.StartElement{
xml.Name{"jabber:client", "stream:stream"},
[]xml.Attr{
xml.Attr{xml.Name{"", "from"}, s.jid},
xml.Attr{xml.Name{"", "to"}, domainpart(s.jid)},
xml.Attr{xml.Name{"", "version"}, "1.0"},
xml.Attr{xml.Name{"", "xml:lang"}, "en"},
xml.Attr{xml.Name{"", "xmlns:stream"}, "http://etherx.jabber.org/streams"},
},
}
s.streamEnd = start.End()
err := s.ed.encodeToken(start)
if err != nil {
log.Println("Could not encode stream start!")
}
}
func (s *session) closeStreams() {
err := s.ed.encodeToken(s.streamEnd)
if err != nil {
log.Println("Could not encode stream end!")
}
}
|
