Merge branch 'roster-backend'

Getting the roster (contact list) is crucial to provide a MVP LimoX
since the chats should be grouped by contacts.

For the MVP it is only relevant to get the roster on connect. Everything
else can be done later.

1 files changed, 81 insertions, 0 deletions

diff --git a/xmpp/iq.go b/xmpp/iq.go
new file mode 100644
index 0000000..1cb7fd5
--- /dev/null
+++ b/xmpp/iq.go
@@ -0,0 +1,81 @@
+package xmpp
+
+import (
+	"encoding/xml"
+	"fmt"
+	"log"
+	"math/rand"
+)
+
+type iqRx struct {
+	XMLName xml.Name `xml:"jabber:client iq"`
+	Type    string   `xml:"type,attr"`
+	Id      string   `xml:"id,attr"`
+	Bind    struct {
+		Jid string `xml:"jid"`
+	} `xml:"urn:ietf:params:xml:ns:xmpp-bind bind"`
+	Query []RosterItem `xml:"jabber:iq:roster query>item"`
+}
+
+type RosterItem struct {
+	Jid          string `xml:"jid,attr"`
+	Subscription string `xml:"subscription,attr"`
+	Name         string `xml:"name,attr"`
+}
+
+func (i iqRx) handle(s *session) {
+	if i.Bind.Jid != "" {
+		s.jid = i.Bind.Jid
+		s.sendPresence()
+		s.sendRosterGet()
+		return
+	}
+
+	if len(i.Query) > 0 {
+		log.Println("Got roster:")
+		for _, v := range i.Query {
+			log.Printf("- %s\n", v.Jid)
+		}
+	}
+}
+
+type bindSet struct {
+	XMLName xml.Name `xml:"jabber:client iq"`
+	Type    string   `xml:"type,attr,omitempty"`
+	Id      string   `xml:"id,attr,omitempty"`
+	Bind    struct {
+		Resource string `xml:"resource,omitempty"`
+	} `xml:"urn:ietf:params:xml:ns:xmpp-bind bind,omitempty"`
+}
+
+func (s *session) sendBind() {
+	s.resourceReq = fmt.Sprintf("%016x", rand.Uint64())
+
+	req := bindSet{}
+	req.Id = s.resourceReq
+	req.Type = "set"
+	req.Bind.Resource = "limox-" + fmt.Sprintf("%08x", rand.Uint32())
+
+	err := s.tx.Encode(req)
+	if err != nil {
+		log.Println("Could not encode ressource binding!")
+	}
+}
+
+type rosterGet struct {
+	XMLName xml.Name `xml:"jabber:client iq"`
+	Type    string   `xml:"type,attr,omitempty"`
+	Id      string   `xml:"id,attr,omitempty"`
+	Query   string   `xml:"jabber:iq:roster query"`
+}
+
+func (s *session) sendRosterGet() {
+	req := rosterGet{}
+	req.Id = fmt.Sprintf("%016x", rand.Uint64())
+	req.Type = "get"
+
+	err := s.tx.Encode(req)
+	if err != nil {
+		log.Println("Could not encode ressource binding!")
+	}
+}