Add support for delegation namespace packet parsing

Refactor and clean up pubsub & pep files

component.go

@@ -216,6 +216,40 @@ func (handshakeDecoder) decode(p *xml.Decoder, se xml.StartElement) (Handshake,
 	return packet, err
 }
 
+// ============================================================================
+// Component delegation
+// XEP-0355
+
+// Delegation can be used both on message (for delegated) and IQ (for Forwarded),
+// depending on the context.
+type Delegation struct {
+	MsgExtension
+	XMLName   xml.Name  `xml:"urn:xmpp:delegation:1 delegation"`
+	Forwarded Forwarded // This is used in iq to wrap delegated iqs
+	Delegated Delegated // This is used in a message to confirm delegated namespace
+}
+
+func (d *Delegation) Namespace() string {
+	return d.XMLName.Space
+}
+
+type Forwarded struct {
+	XMLName  xml.Name `xml:"urn:xmpp:forward:0 forwarded"`
+	IQ       IQ
+	Message  Message
+	Presence Presence
+}
+
+type Delegated struct {
+	XMLName   xml.Name `xml:"delegated"`
+	Namespace string   `xml:"namespace,attr,omitempty"`
+}
+
+func init() {
+	TypeRegistry.MapExtension(PKTMessage, xml.Name{"urn:xmpp:delegation:1", "delegation"}, Delegation{})
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{"urn:xmpp:delegation:1", "delegation"}, Delegation{})
+}
+
 /*
 TODO: Add support for discovery management directly in component
 TODO: Support multiple identities on disco info

component_test.go

@@ -1,6 +1,9 @@
 package xmpp // import "gosrc.io/xmpp"
 
-import "testing"
+import (
+	"encoding/xml"
+	"testing"
+)
 
 func TestHandshake(t *testing.T) {
 	opts := ComponentOptions{
@@ -21,3 +24,72 @@ func TestHandshake(t *testing.T) {
 func TestGenerateHandshake(t *testing.T) {
 	// TODO
 }
+
+// We should be able to properly parse delegation confirmation messages
+func TestParsingDelegationMessage(t *testing.T) {
+	packetStr := `<message to='service.localhost' from='localhost'>
+ <delegation xmlns='urn:xmpp:delegation:1'>
+  <delegated namespace='http://jabber.org/protocol/pubsub'/>
+ </delegation>
+</message>`
+	var msg Message
+	data := []byte(packetStr)
+	if err := xml.Unmarshal(data, &msg); err != nil {
+		t.Errorf("Unmarshal(%s) returned error", data)
+	}
+
+	// Check that we have extracted the delegation info as MsgExtension
+	var nsDelegated string
+	for _, ext := range msg.Extensions {
+		if delegation, ok := ext.(*Delegation); ok {
+			nsDelegated = delegation.Delegated.Namespace
+		}
+	}
+	if nsDelegated != "http://jabber.org/protocol/pubsub" {
+		t.Errorf("Could not find delegated namespace in delegation: %#v\n", msg)
+	}
+}
+
+// Check that we can parse a delegation IQ.
+// The most important thing is to be able to
+func TestParsingDelegationIQ(t *testing.T) {
+	packetStr := `<iq to='service.localhost' from='localhost' type='set' id='1'>
+ <delegation xmlns='urn:xmpp:delegation:1'>
+  <forwarded xmlns='urn:xmpp:forward:0'>
+   <iq xml:lang='en' to='test1@localhost' from='test1@localhost/mremond-mbp' type='set' id='aaf3a' xmlns='jabber:client'>
+    <pubsub xmlns='http://jabber.org/protocol/pubsub'>
+     <publish node='http://jabber.org/protocol/mood'>
+      <item id='current'>
+       <mood xmlns='http://jabber.org/protocol/mood'>
+        <excited/>
+       </mood>
+      </item>
+     </publish>
+    </pubsub>
+   </iq>
+  </forwarded>
+ </delegation>
+</iq>`
+	var iq IQ
+	data := []byte(packetStr)
+	if err := xml.Unmarshal(data, &iq); err != nil {
+		t.Errorf("Unmarshal(%s) returned error", data)
+	}
+
+	// Check that we have extracted the delegation info as IQPayload
+	var node string
+	for _, ext := range iq.Payload {
+		if delegation, ok := ext.(*Delegation); ok {
+			payload := delegation.Forwarded.IQ.Payload
+			if len(payload) > 0 {
+				payload := delegation.Forwarded.IQ.Payload[0]
+				if pubsub, ok := payload.(*PubSub); ok {
+					node = pubsub.Publish.Node
+				}
+			}
+		}
+	}
+	if node != "http://jabber.org/protocol/mood" {
+		t.Errorf("Could not find mood node name on delegated publish: %#v\n", iq)
+	}
+}

pep.go

@@ -1,25 +1,11 @@
 package xmpp // import "gosrc.io/xmpp"
 
+// TODO: Move to a pubsub file
+
 import (
 	"encoding/xml"
 )
 
-type PubSub struct {
-	XMLName xml.Name `xml:"http://jabber.org/protocol/pubsub pubsub"`
-	Publish Publish
-}
-
-type Publish struct {
-	XMLName xml.Name `xml:"publish"`
-	Node    string   `xml:"node,attr"`
-	Item    Item
-}
-
-type Item struct {
-	XMLName xml.Name `xml:"item"`
-	Tune    Tune
-}
-
 type Tune struct {
 	XMLName xml.Name `xml:"http://jabber.org/protocol/tune tune"`
 	Artist  string   `xml:"artist,omitempty"`
@@ -31,53 +17,9 @@ type Tune struct {
 	Uri     string   `xml:"uri,omitempty"`
 }
 
-/*
-type PubsubPublish struct {
-	XMLName xml.Name `xml:"publish"`
-	node    string   `xml:"node,attr"`
-	item    PubSubItem
-}
-
-type PubSubItem struct {
-	xmlName xml.Name `xml:"item"`
-}
-
-type Thing2 struct {
-	XMLName xml.Name `xml:"publish"`
-	node    string   `xml:"node,attr"`
-	tune    string   `xml:"http://jabber.org/protocol/tune item>tune"`
-}
-
-type Tune struct {
-	artist string
-	length int
-	rating int
-	source string
-	title  string
-	track  string
-	uri    string
-}
-*/
-
-/*
-func (*Tune) XMPPFormat() string {
-	return fmt.Sprintf(
-		`<iq type='set' id='%s'>
- <pubsub xmlns='http://jabber.org/protocol/pubsub'>
-  <publish node='http://jabber.org/protocol/tune'>
-   <item>
-    <tune xmlns='http://jabber.org/protocol/tune'>
-     <artist>%s</artist>
-     <length>%i</length>
-     <rating>%i</rating>
-     <source>%s</source>
-     <title>%s</title>
-     <track>%s</track>
-     <uri>%s</uri>
-    </tune>
-   </item>
-  </publish>
- </pubsub>
-</iq>`)
+type Mood struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/mood mood"`
+	// TODO: Custom parsing to extract mood type from tag name
+	// Mood type
+	Text string `xml:"text,omitempty"`
 }
-*/

pubsub.go

@@ -0,0 +1,39 @@
+package xmpp // import "gosrc.io/xmpp"
+
+import (
+	"encoding/xml"
+)
+
+type PubSub struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/pubsub pubsub"`
+	Publish Publish
+	Retract Retract
+	// TODO <configure/>
+}
+
+func (p *PubSub) Namespace() string {
+	return p.XMLName.Space
+}
+
+type Publish struct {
+	XMLName xml.Name `xml:"publish"`
+	Node    string   `xml:"node,attr"`
+	Item    Item
+}
+
+type Item struct {
+	XMLName xml.Name `xml:"item"`
+	Id      string   `xml:"id,attr,omitempty"`
+	Tune    Tune
+}
+
+type Retract struct {
+	XMLName xml.Name `xml:"retract"`
+	Node    string   `xml:"node,attr"`
+	Notify  string   `xml:"notify,attr"`
+	Item    Item
+}
+
+func init() {
+	TypeRegistry.MapExtension(PKTIQ, xml.Name{"http://jabber.org/protocol/pubsub", "pubsub"}, PubSub{})
+}

router.go

@@ -8,6 +8,11 @@ import (
 The XMPP router helps client and component developers select which XMPP they would like to process,
 and associate processing code depending on the router configuration.
 
+Here are important rules to keep in mind while setting your routes and matchers:
+- Routes are evaluated in the order they are set.
+- When a route matches, it is executed and all others routes are ignored. For each packet, only a single
+  route is executed.
+
 TODO: Automatically reply to IQ that do not match any route, to comply to XMPP standard.
 */