Respond to IQ version on the gateway, a server or a chan with biboumi version

ref #2455

src/config.h.cmake

@@ -1,3 +1,4 @@
+#define SYSTEM_NAME "${CMAKE_SYSTEM}"
 #cmakedefine ICONV_SECOND_ARGUMENT_IS_CONST
 #cmakedefine LIBIDN_FOUND
 #cmakedefine SYSTEMDDAEMON_FOUND

src/xmpp/xmpp_component.cpp

@@ -506,6 +506,16 @@ void XmppComponent::handle_iq(const Stanza& stanza)
                 }
             }
         }
+      else if ((query = stanza.get_child("query", VERSION_NS)))
+        {
+          Iid iid(to.local);
+          if (!iid.is_user)
+            {
+              // On the gateway itself or on a channel
+              this->send_self_version(id, from, to_str);
+            }
+          stanza_error.disable();
+        }
       else if ((query = stanza.get_child("query", DISCO_ITEMS_NS)))
         {
           const std::string node = query->get_tag("node");
@@ -973,6 +983,33 @@ void XmppComponent::send_self_disco_info(const std::string& id, const std::strin
   this->send_stanza(iq);
 }
 
+void XmppComponent::send_self_version(const std::string& id, const std::string& jid_to, const std::string& jid_from)
+{
+  Stanza iq("iq");
+  iq["type"] = "result";
+  iq["id"] = id;
+  iq["to"] = jid_to;
+  iq["from"] = jid_from;
+  XmlNode query("query");
+  query["xmlns"] = VERSION_NS;
+  XmlNode name("name");
+  name.set_inner("biboumi");
+  name.close();
+  query.add_child(std::move(name));
+  XmlNode version("version");
+  version.set_inner(BIBOUMI_VERSION);
+  version.close();
+  query.add_child(std::move(version));
+  XmlNode os("os");
+  os.set_inner(SYSTEM_NAME);
+  os.close();
+  query.add_child(std::move(os));
+  query.close();
+  iq.add_child(std::move(query));
+  iq.close();
+  this->send_stanza(iq);
+}
+
 void XmppComponent::send_adhoc_commands_list(const std::string& id, const std::string& requester_jid)
 {
   Stanza iq("iq");

src/xmpp/xmpp_component.hpp

@@ -199,6 +199,10 @@ public:
    * Send a result IQ with the gateway disco informations.
    */
   void send_self_disco_info(const std::string& id, const std::string& jid_to);
+  /**
+   * Send a result IQ with the gateway version.
+   */
+  void send_self_version(const std::string& id, const std::string& jid_to, const std::string& jid_from);
   /**
    * Send the list of all available ad-hoc commands to that JID. The list is
    * different depending on what JID made the request.