Avoid empty jid attribute in MUC user extension item

xmpp/extensions/extensions.go

@@ -252,7 +252,7 @@ type PresenceXMucUserExtension struct {
 type PresenceXMucUserItem struct {
 	XMLName     xml.Name `xml:"item"`
 	Affiliation	string   `xml:"affiliation,attr"`
-	Jid         string   `xml:"jid,attr"`
+	Jid         *string  `xml:"jid,attr"`
 	Nick        string   `xml:"nick,attr,omitempty"`
 	Role       	string   `xml:"role,attr"`
 }

xmpp/gateway/gateway.go

@@ -414,6 +414,9 @@ func LogBadPresence(presence *stanza.Presence) {
 // SPFrom is a Telegram user id
 var SPFrom = args.NewString()
 
+// SPFullFrom is for specifying a full from when desired
+var SPFullFrom = args.NewString()
+
 // SPType is a presence type
 var SPType = args.NewString()
 
@@ -458,7 +461,9 @@ var SPToResources = args.New()
 
 func newPresence(bareJid string, to string, args ...args.V) stanza.Presence {
 	var presenceFrom string
-	if SPFrom.IsSet(args) {
+	if SPFullFrom.IsSet(args) {
+		presenceFrom = SPFullFrom.Get(args)
+	} else if SPFrom.IsSet(args) {
 		presenceFrom = SPFrom.Get(args) + "@" + bareJid
 		if SPResource.IsSet(args) {
 			resource := SPResource.Get(args)
@@ -530,7 +535,8 @@ func newPresence(bareJid string, to string, args ...args.V) stanza.Presence {
 				userExt.Item.Nick = SPMUCNick.Get(args)
 			}
 			if SPMUCJid.IsSet(args) {
-				userExt.Item.Jid = SPMUCJid.Get(args)
+				mucJid := SPMUCJid.Get(args)
+				userExt.Item.Jid = &mucJid
 			}
 			if SPMUCStatusCodes.IsSet(args) {
 				statusCodes := SPMUCStatusCodes.Get(args).([]uint16)

xmpp/handlers.go

@@ -698,27 +698,16 @@ func handleMUCUnavailable(component *xmpp.Component, p stanza.Presence, session
 
 	session.LeaveMUC(chatId, resource)
 
-	reply := &stanza.Presence{
-		Attrs: stanza.Attrs{
-			From:  p.To,
-			To:    p.From,
-			Id:    p.Id,
-			Type:  stanza.PresenceTypeUnavailable,
-		},
-		Extensions: []stanza.PresExtension{
-			extensions.PresenceXMucUserExtension{
-				Item: extensions.PresenceXMucUserItem{
-					Affiliation: "member",
-					Jid:         p.From,
-					Role:        "none",
-				},
-				Statuses: []extensions.PresenceXMucUserStatus{
-					extensions.PresenceXMucUserStatus{Code: 110},
-				},
-			},
-		},
-	}
-	gateway.ResumableSend(component, reply)
+	gateway.SendPresence(
+		component,
+		p.From,
+		gateway.SPFullFrom(p.To),
+		gateway.SPType("unavailable"),
+		gateway.SPMUCAffiliation("member"),
+		gateway.SPMUCRole("none"),
+		gateway.SPMUCJid(p.From),
+		gateway.SPMUCStatusCodes([]uint16{110}),
+	)
 }
 
 func handleGetVcardIq(s xmpp.Sender, iq *stanza.IQ, typ byte) {