Implement MIX-PAM XEP-0405: Presence extension

This implements the new presence extension defined by XEP-0405: Mediated
Information eXchange (MIX): Participant Server Requirements in version
0.4.0.

https://xmpp.org/extensions/xep-0405.html#usecase-user-presence-receive

4 files changed, 58 insertions, 1 deletions

diff --git a/src/base/QXmppConstants.cpp b/src/base/QXmppConstants.cpp
index 5cbc5024..b5c2215b 100644
--- a/src/base/QXmppConstants.cpp
+++ b/src/base/QXmppConstants.cpp
@@ -144,3 +144,4 @@ const char* ns_mix_node_info = "urn:xmpp:mix:nodes:info";
 // XEP-0405: Mediated Information eXchange (MIX): Participant Server Requirements
 const char* ns_mix_pam = "urn:xmpp:mix:pam:0";
 const char* ns_mix_roster = "urn:xmpp:mix:roster:0";
+const char* ns_mix_presence = "urn:xmpp:presence:0";
diff --git a/src/base/QXmppConstants_p.h b/src/base/QXmppConstants_p.h
index 5821a05a..e425485c 100644
--- a/src/base/QXmppConstants_p.h
+++ b/src/base/QXmppConstants_p.h
@@ -156,5 +156,6 @@ extern const char* ns_mix_node_info;
 // XEP-0405: Mediated Information eXchange (MIX): Participant Server Requirements
 extern const char* ns_mix_pam;
 extern const char* ns_mix_roster;
+extern const char* ns_mix_presence;
 
 #endif // QXMPPCONSTANTS_H
diff --git a/src/base/QXmppPresence.cpp b/src/base/QXmppPresence.cpp
index f8a27f43..ad0b1c60 100644
--- a/src/base/QXmppPresence.cpp
+++ b/src/base/QXmppPresence.cpp
@@ -80,6 +80,10 @@ public:
 
     // XEP-0319: Last User Interaction in Presence
     QDateTime lastUserInteraction;
+
+    // XEP-0405: Mediated Information eXchange (MIX): Participant Server Requirements
+    QString mixUserJid;
+    QString mixUserNick;
 };
 
 /// Constructs a QXmppPresence.
@@ -265,6 +269,11 @@ void QXmppPresence::parse(const QDomElement &element)
                 d->lastUserInteraction = QXmppUtils::datetimeFromString(since);
             }
         }
+        // XEP-0405: Mediated Information eXchange (MIX): Participant Server Requirements
+        else if (xElement.tagName() == "mix" && xElement.namespaceURI() == ns_mix_presence) {
+            d->mixUserJid = xElement.firstChildElement("jid").text();
+            d->mixUserNick = xElement.firstChildElement("nick").text();
+        }
         else if (xElement.tagName() != "addresses" && xElement.tagName() != "error"
                  && xElement.tagName() != "show" && xElement.tagName() != "status"
                  && xElement.tagName() != "priority")
@@ -361,6 +370,17 @@ void QXmppPresence::toXml(QXmlStreamWriter *xmlWriter) const
         xmlWriter->writeEndElement();
     }
 
+    // XEP-0405: Mediated Information eXchange (MIX): Participant Server Requirements
+    if (!d->mixUserJid.isEmpty() || !d->mixUserNick.isEmpty()) {
+        xmlWriter->writeStartElement("mix");
+        xmlWriter->writeAttribute("xmlns", ns_mix_presence);
+        if (!d->mixUserJid.isEmpty())
+            xmlWriter->writeTextElement("jid", d->mixUserJid);
+        if (!d->mixUserNick.isEmpty())
+            xmlWriter->writeTextElement("nick", d->mixUserNick);
+        xmlWriter->writeEndElement();
+    }
+
     // other extensions
     QXmppStanza::extensionsToXml(xmlWriter);
 
@@ -522,7 +542,35 @@ void QXmppPresence::setLastUserInteraction(const QDateTime& lastUserInteraction)
     d->lastUserInteraction = lastUserInteraction;
 }
 
-/// Indicates if the QXmppStanza is a stanza in the XMPP sense (i. e. a message,
+/// Returns the actual (full) JID of the MIX channel participant.
+
+QString QXmppPresence::mixUserJid() const
+{
+    return d->mixUserJid;
+}
+
+/// Sets the actual (full) JID of the MIX channel participant.
+
+void QXmppPresence::setMixUserJid(const QString& mixUserJid)
+{
+    d->mixUserJid = mixUserJid;
+}
+
+/// Returns the MIX participant's nickname.
+
+QString QXmppPresence::mixUserNick() const
+{
+    return d->mixUserNick;
+}
+
+/// Sets the MIX participant's nickname.
+
+void QXmppPresence::setMixUserNick(const QString& mixUserNick)
+{
+    d->mixUserNick = mixUserNick;
+}
+
+/// Indicates if the QXmppStanza is a stanza in the XMPP sence (i. e. a message,
 /// iq or presence)
 
 bool QXmppPresence::isXmppStanza() const
diff --git a/src/base/QXmppPresence.h b/src/base/QXmppPresence.h
index bda272af..25b6ea7f 100644
--- a/src/base/QXmppPresence.h
+++ b/src/base/QXmppPresence.h
@@ -132,6 +132,13 @@ public:
     QDateTime lastUserInteraction() const;
     void setLastUserInteraction(const QDateTime&);
 
+    // XEP-0405: Mediated Information eXchange (MIX): Participant Server Requirements
+    QString mixUserJid() const;
+    void setMixUserJid(const QString&);
+
+    QString mixUserNick() const;
+    void setMixUserNick(const QString&);
+
     bool isXmppStanza() const;
 
 private: