Do not send the admin-only adhoc commands to non-admin users

They were not able to execute them anyway, so this was just a little
usability issue.

louloulibs/xmpp/xmpp_component.cpp

@@ -651,7 +651,7 @@ void XmppComponent::send_version(const std::string& id, const std::string& jid_t
   this->send_stanza(iq);
 }
 
-void XmppComponent::send_adhoc_commands_list(const std::string& id, const std::string& requester_jid)
+void XmppComponent::send_adhoc_commands_list(const std::string& id, const std::string& requester_jid, const bool with_admin_only)
 {
   Stanza iq("iq");
   iq["type"] = "result";
@@ -663,6 +663,8 @@ void XmppComponent::send_adhoc_commands_list(const std::string& id, const std::s
   query["node"] = ADHOC_NS;
   for (const auto& kv: this->adhoc_commands_handler.get_commands())
     {
+      if (kv.second.is_admin_only() && !with_admin_only)
+        continue;
       XmlNode item("item");
       item["jid"] = this->served_hostname;
       item["node"] = kv.first;

louloulibs/xmpp/xmpp_component.hpp

@@ -184,7 +184,8 @@ public:
    * Send the list of all available ad-hoc commands to that JID. The list is
    * different depending on what JID made the request.
    */
-  void send_adhoc_commands_list(const std::string& id, const std::string& requester_jid);
+  void send_adhoc_commands_list(const std::string& id, const std::string& requester_jid,
+                                const bool with_admin_only);
   /**
    * Send an iq version request
    */

src/xmpp/biboumi_component.cpp

@@ -50,7 +50,7 @@ BiboumiComponent::BiboumiComponent(std::shared_ptr<Poller> poller, const std::st
   this->stanza_handlers.emplace("iq",
                                 std::bind(&BiboumiComponent::handle_iq, this,std::placeholders::_1));
 
-  this->adhoc_commands_handler.get_commands()= {
+  this->adhoc_commands_handler.get_commands() = {
     {"ping", AdhocCommand({&PingStep1}, "Do a ping", false)},
     {"hello", AdhocCommand({&HelloStep1, &HelloStep2}, "Receive a custom greeting", false)},
     {"disconnect-user", AdhocCommand({&DisconnectUserStep1, &DisconnectUserStep2}, "Disconnect a user from the gateway", true)},
@@ -370,7 +370,10 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
           const std::string node = query->get_tag("node");
           if (node == ADHOC_NS)
             {
-              this->send_adhoc_commands_list(id, from);
+              Jid from_jid(from);
+              this->send_adhoc_commands_list(id, from,
+                                             (Config::get("admin", "") ==
+                                              from_jid.local + "@" + from_jid.domain));
               stanza_error.disable();
             }
           else if (node.empty() && !iid.is_user && !iid.is_channel)