go-xmpp/component.go
2018-01-11 23:00:59 +01:00

77 lines
1.8 KiB
Go

package xmpp
import (
"encoding/xml"
"errors"
"fmt"
"io"
"net"
"time"
)
const componentStreamOpen = "<?xml version='1.0'?><stream:stream to='%s' xmlns='%s' xmlns:stream='%s'>"
// Component implements an XMPP extension allowing to extend XMPP server
// using external components. Component specifications are defined
// in XEP-0114, XEP-0355 and XEP-0356.
type Component struct {
// TCP level connection
conn net.Conn
// read / write
socketProxy io.ReadWriter
decoder *xml.Decoder
}
// TODO Helper to prepare connection string
func Open(connStr string) error {
c := Component{}
var conn net.Conn
var err error
if conn, err = net.DialTimeout("tcp", "localhost:8888", time.Duration(5)*time.Second); err != nil {
return err
}
c.conn = conn
// TODO send stream open and check for reply
// Send stream open tag
componentHost := connStr // TODO Fix me
if _, err := fmt.Fprintf(conn, componentStreamOpen, componentHost, NSComponent, NSStream); err != nil {
fmt.Println("cannot send stream open.")
return err
}
c.decoder = xml.NewDecoder(conn)
// Initialize xml decoder and extract streamID from reply
streamId, err := initDecoder(c.decoder)
if err != nil {
fmt.Println("cannot init decoder")
return err
}
fmt.Println("StreamID = ", streamId)
// Authentication
if _, err := fmt.Fprint(conn, "<handshake>aaee83c26aeeafcbabeabfcbcd50df997e0a2a1e</handshake>"); err != nil {
fmt.Println("cannot send stream open.")
return err
}
// Next message should be either success or failure.
name, val, err := next(c.decoder)
if err != nil {
fmt.Println(err)
return err
}
switch v := val.(type) {
case *StreamError:
fmt.Printf("error: %s", v.Error.Local)
default:
return errors.New("unexpected packet, got " + name.Local + " in " + name.Space)
}
return nil
}