Convert received modes into roles and affiliations

src/xmpp/xmpp_component.cpp

@@ -484,3 +484,25 @@ void XmppComponent::send_nickname_conflict_error(const std::string& muc_name,
   presence.close();
   this->send_stanza(presence);
 }
+
+void XmppComponent::send_affiliation_role_change(const std::string& muc_name,
+                                                 const std::string& target,
+                                                 const std::string& affiliation,
+                                                 const std::string& role,
+                                                 const std::string& jid_to)
+{
+  Stanza presence("presence");
+  presence["from"] = muc_name + "@" + this->served_hostname + "/" + target;
+  presence["to"] = jid_to;
+  XmlNode x("x");
+  x["xmlns"] = MUC_USER_NS;
+  XmlNode item("item");
+  item["affiliation"] = affiliation;
+  item["role"] = role;
+  item.close();
+  x.add_child(std::move(item));
+  x.close();
+  presence.add_child(std::move(x));
+  presence.close();
+  this->send_stanza(presence);
+}

src/xmpp/xmpp_component.hpp

@@ -112,6 +112,15 @@ public:
   void send_nickname_conflict_error(const std::string& muc_name,
                                     const std::string& nickname,
                                     const std::string& jid_to);
+  /**
+   * Send a presence from the MUC indicating a change in the role and/or
+   * affiliation of a participant
+   */
+  void send_affiliation_role_change(const std::string& muc_name,
+                                    const std::string& target,
+                                    const std::string& affiliation,
+                                    const std::string& role,
+                                    const std::string& jid_to);
   /**
    * Handle the various stanza types
    */