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|
package xmpp
import (
"context"
"crypto/tls"
"crypto/x509"
"encoding/xml"
"io"
"log"
)
type SessionConnect struct{}
type SessionDisconnect struct{}
type SessionShouldDisconnect struct{}
type session struct {
jid string
pwd string
in chan any
out chan<- any
transport *tls.Conn
tx *xml.Encoder
rx chan any
resourceReq string
}
func StartSession(out chan<- any, jid string, pwd string) (in chan<- any) {
s := session{}
s.jid = jid
s.pwd = pwd
s.in = make(chan any)
s.out = out
s.rx = make(chan any, 0)
go s.run()
return s.in
}
func (s *session) run() {
err := s.startTransport()
if err != nil {
return
}
defer s.transport.Close()
ctx, cancel := context.WithCancel(context.Background())
cpy := s.rx
go runRx(ctx, cpy, s.transport)
defer cancel()
lw := logger{"[TX] "}
w := io.MultiWriter(s.transport, lw)
s.tx = xml.NewEncoder(w)
defer s.tx.Close()
openStream(s.tx, s.jid)
defer closeStream(s.tx)
s.out <- SessionConnect{} // TODO this should be sent after initial presence
defer func() { s.out <- SessionDisconnect{} }()
for {
select {
case e := <-s.rx:
handle(s, e)
case signal := <-s.in:
switch signal.(type) {
case SessionShouldDisconnect:
return
}
}
}
}
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
}
|
