go-xmpp/_examples/delegation/delegation.go
remicorniere 947fcf0432 PubSub protocol support (#142)
* PubSub protocol support
Added support for :
- XEP-0050   (Command))
- XEP-0060   (PubSub)
- XEP-0004   (Forms)

Fixed the NewClient function by adding parsing of the domain from the JID if no domain is provided in transport config.
Updated xmpp_jukebox example

* Delete useless pubsub errors

* README.md update
Fixed import in echo example

* Typo

* Fixed raw send on client example

* Fixed jukebox example and added a README.md
2020-01-09 15:33:11 +01:00

210 lines
5.6 KiB
Go

package main
import (
"encoding/xml"
"fmt"
"log"
"gosrc.io/xmpp"
"gosrc.io/xmpp/stanza"
)
func main() {
opts := xmpp.ComponentOptions{
TransportConfiguration: xmpp.TransportConfiguration{
Address: "localhost:9999",
Domain: "service.localhost",
},
Domain: "service.localhost",
Secret: "mypass",
// TODO: Move that part to a component discovery handler
Name: "Test Component",
Category: "gateway",
Type: "service",
}
router := xmpp.NewRouter()
router.HandleFunc("message", handleMessage)
router.NewRoute().
IQNamespaces(stanza.NSDiscoInfo).
HandlerFunc(func(s xmpp.Sender, p stanza.Packet) {
discoInfo(s, p, opts)
})
router.NewRoute().
IQNamespaces("urn:xmpp:delegation:1").
HandlerFunc(handleDelegation)
component, err := xmpp.NewComponent(opts, router)
if err != nil {
log.Fatalf("%+v", err)
}
// If you pass the component to a stream manager, it will handle the reconnect policy
// for you automatically.
// TODO: Post Connect could be a feature of the router or the client. Move it somewhere else.
cm := xmpp.NewStreamManager(component, nil)
log.Fatal(cm.Run())
}
func handleMessage(_ xmpp.Sender, p stanza.Packet) {
msg, ok := p.(stanza.Message)
if !ok {
return
}
var msgProcessed bool
for _, ext := range msg.Extensions {
delegation, ok := ext.(*stanza.Delegation)
if ok {
msgProcessed = true
fmt.Printf("Delegation confirmed for namespace %s\n", delegation.Delegated.Namespace)
}
}
// TODO: Decode privilege message
// <message to='service.localhost' from='localhost'><privilege xmlns='urn:xmpp:privilege:1'><perm type='outgoing' access='message'/><perm type='get' access='roster'/><perm type='managed_entity' access='presence'/></privilege></message>
if !msgProcessed {
fmt.Printf("Ignored received message, not related to delegation: %v\n", msg)
}
}
const (
pubsubNode = "urn:xmpp:delegation:1::http://jabber.org/protocol/pubsub"
pepNode = "urn:xmpp:delegation:1:bare:http://jabber.org/protocol/pubsub"
)
// TODO: replace xmpp.Sender by ctx xmpp.Context ?
// ctx.Stream.Send / SendRaw
// ctx.Opts
func discoInfo(c xmpp.Sender, p stanza.Packet, opts xmpp.ComponentOptions) {
// Type conversion & sanity checks
iq, ok := p.(stanza.IQ)
if !ok {
return
}
info, ok := iq.Payload.(*stanza.DiscoInfo)
if !ok {
return
}
iqResp := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id})
switch info.Node {
case "":
discoInfoRoot(&iqResp, opts)
case pubsubNode:
discoInfoPubSub(&iqResp)
case pepNode:
discoInfoPEP(&iqResp)
}
_ = c.Send(iqResp)
}
func discoInfoRoot(iqResp *stanza.IQ, opts xmpp.ComponentOptions) {
disco := iqResp.DiscoInfo()
disco.AddIdentity(opts.Name, opts.Category, opts.Type)
disco.AddFeatures(stanza.NSDiscoInfo, stanza.NSDiscoItems, "jabber:iq:version", "urn:xmpp:delegation:1")
}
func discoInfoPubSub(iqResp *stanza.IQ) {
payload := stanza.DiscoInfo{
XMLName: xml.Name{
Space: stanza.NSDiscoInfo,
Local: "query",
},
Node: pubsubNode,
Features: []stanza.Feature{
{Var: "http://jabber.org/protocol/pubsub"},
{Var: "http://jabber.org/protocol/pubsub#publish"},
{Var: "http://jabber.org/protocol/pubsub#subscribe"},
{Var: "http://jabber.org/protocol/pubsub#publish-options"},
},
}
iqResp.Payload = &payload
}
func discoInfoPEP(iqResp *stanza.IQ) {
identity := stanza.Identity{
Category: "pubsub",
Type: "pep",
}
payload := stanza.DiscoInfo{
XMLName: xml.Name{
Space: stanza.NSDiscoInfo,
Local: "query",
},
Identity: []stanza.Identity{identity},
Node: pepNode,
Features: []stanza.Feature{
{Var: "http://jabber.org/protocol/pubsub#access-presence"},
{Var: "http://jabber.org/protocol/pubsub#auto-create"},
{Var: "http://jabber.org/protocol/pubsub#auto-subscribe"},
{Var: "http://jabber.org/protocol/pubsub#config-node"},
{Var: "http://jabber.org/protocol/pubsub#create-and-configure"},
{Var: "http://jabber.org/protocol/pubsub#create-nodes"},
{Var: "http://jabber.org/protocol/pubsub#filtered-notifications"},
{Var: "http://jabber.org/protocol/pubsub#persistent-items"},
{Var: "http://jabber.org/protocol/pubsub#publish"},
{Var: "http://jabber.org/protocol/pubsub#retrieve-items"},
{Var: "http://jabber.org/protocol/pubsub#subscribe"},
},
}
iqResp.Payload = &payload
}
func handleDelegation(s xmpp.Sender, p stanza.Packet) {
// Type conversion & sanity checks
iq, ok := p.(stanza.IQ)
if !ok {
return
}
delegation, ok := iq.Payload.(*stanza.Delegation)
if !ok {
return
}
forwardedPacket := delegation.Forwarded.Stanza
fmt.Println(forwardedPacket)
forwardedIQ, ok := forwardedPacket.(stanza.IQ)
if !ok {
return
}
pubsub, ok := forwardedIQ.Payload.(*stanza.PubSubGeneric)
if !ok {
// We only support pubsub delegation
return
}
if pubsub.Publish.XMLName.Local == "publish" {
// Prepare pubsub IQ reply
iqResp := stanza.NewIQ(stanza.Attrs{Type: "result", From: forwardedIQ.To, To: forwardedIQ.From, Id: forwardedIQ.Id})
payload := stanza.PubSubGeneric{
XMLName: xml.Name{
Space: "http://jabber.org/protocol/pubsub",
Local: "pubsub",
},
}
iqResp.Payload = &payload
// Wrap the reply in delegation 'forward'
iqForward := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id})
delegPayload := stanza.Delegation{
XMLName: xml.Name{
Space: "urn:xmpp:delegation:1",
Local: "delegation",
},
Forwarded: &stanza.Forwarded{
XMLName: xml.Name{
Space: "urn:xmpp:forward:0",
Local: "forward",
},
Stanza: iqResp,
},
}
iqForward.Payload = &delegPayload
_ = s.Send(iqForward)
// TODO: The component should actually broadcast the mood to subscribers
}
}