Support for XEP-0070

This commit allows to create a component to use 2FA authentication with XMPP.

stanza/httauth.go

@@ -0,0 +1,50 @@
+package stanza
+
+import (
+	"encoding/xml"
+)
+
+// XEP-0070: Verifying HTTP Requests via XMPP
+type ConfirmPayload struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/http-auth confirm"`
+	ID      string   `xml:"id,attr"`
+	Method  string   `xml:"method,attr"`
+	URL     string   `xml:"url,attr"`
+}
+
+func (c ConfirmPayload) Namespace() string {
+	return c.XMLName.Space
+}
+
+func (c ConfirmPayload) GetSet() *ResultSet {
+	return nil
+}
+
+// ---------------
+// Builder helpers
+
+// Confirm builds a default confirm payload
+func (iq *IQ) Confirm() *ConfirmPayload {
+	d := ConfirmPayload{
+		XMLName: xml.Name{Space: "http://jabber.org/protocol/http-auth", Local: "confirm"},
+	}
+	iq.Payload = &d
+	return &d
+}
+
+// Set all confirm info
+func (v *ConfirmPayload) SetConfirm(id, method, url string) *ConfirmPayload {
+	v.ID = id
+	v.Method = method
+	v.URL = url
+	return v
+}
+
+func init() {
+	TypeRegistry.MapExtension(PKTMessage,
+		xml.Name{Space: "http://jabber.org/protocol/http-auth", Local: "confirm"},
+		ConfirmPayload{})
+	TypeRegistry.MapExtension(PKTIQ,
+		xml.Name{Space: "http://jabber.org/protocol/http-auth", Local: "confirm"},
+		ConfirmPayload{})
+}