Rename iq_responder_callback_t to irc_… and add the equivalent to wait for iqs

src/bridge/bridge.cpp

 #include <bridge/bridge.hpp>
 #include <bridge/colors.hpp>
 #include <xmpp/xmpp_component.hpp>
+#include <xmpp/xmpp_stanza.hpp>
 #include <irc/irc_message.hpp>
 #include <network/poller.hpp>
 #include <utils/encoding.hpp>
@@ -220,45 +221,49 @@ void Bridge::send_irc_kick(const Iid& iid, const std::string& target, const std:
                            const std::string& iq_id, const std::string& to_jid)
 {
   IrcClient* irc = this->get_irc_client(iid.get_server());
-  if (irc)
+
+  if (!irc)
+    return;
+
+  irc->send_kick_command(iid.get_local(), target, reason);
+  irc_responder_callback_t cb = [this, target, iq_id, to_jid, iid](const std::string& irc_hostname,
+                                                                   const IrcMessage& message) -> bool
     {
-      irc->send_kick_command(iid.get_local(), target, reason);
-      this->add_waiting_iq([this, target, iq_id, to_jid, iid](const std::string& irc_hostname, const IrcMessage& message){
-          if (irc_hostname != iid.get_server())
+      if (irc_hostname != iid.get_server())
+        return false;
+      if (message.command == "KICK" && message.arguments.size() >= 2)
+        {
+          const std::string target_later = message.arguments[1];
+          const std::string chan_name_later = utils::tolower(message.arguments[0]);
+          if (target_later != target || chan_name_later != iid.get_local())
             return false;
-          if (message.command == "KICK" && message.arguments.size() >= 2)
-            {
-              const std::string target_later = message.arguments[1];
-              const std::string chan_name_later = utils::tolower(message.arguments[0]);
-              if (target_later != target || chan_name_later != iid.get_local())
-                return false;
-              this->xmpp->send_iq_result(iq_id, to_jid, std::to_string(iid));
-            }
-          else if (message.command == "401" && message.arguments.size() >= 2)
-            {
-              const std::string target_later = message.arguments[1];
-              if (target_later != target)
-                return false;
-              std::string error_message = "No such nick";
-              if (message.arguments.size() >= 3)
-                error_message = message.arguments[2];
-              this->xmpp->send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "item-not-found",
-                                            error_message, false);
-            }
-          else if (message.command == "482" && message.arguments.size() >= 2)
-            {
-              const std::string chan_name_later = utils::tolower(message.arguments[1]);
-              if (chan_name_later != iid.get_local())
-                return false;
-              std::string error_message = "You're not channel operator";
-              if (message.arguments.size() >= 3)
-                error_message = message.arguments[2];
-              this->xmpp->send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "not-allowed",
-                                            error_message, false);
-            }
-          return true;
-        });
-    }
+          this->xmpp->send_iq_result(iq_id, to_jid, std::to_string(iid));
+        }
+      else if (message.command == "401" && message.arguments.size() >= 2)
+        {
+          const std::string target_later = message.arguments[1];
+          if (target_later != target)
+            return false;
+          std::string error_message = "No such nick";
+          if (message.arguments.size() >= 3)
+            error_message = message.arguments[2];
+          this->xmpp->send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "item-not-found",
+                                        error_message, false);
+        }
+      else if (message.command == "482" && message.arguments.size() >= 2)
+        {
+          const std::string chan_name_later = utils::tolower(message.arguments[1]);
+          if (chan_name_later != iid.get_local())
+            return false;
+          std::string error_message = "You're not channel operator";
+          if (message.arguments.size() >= 3)
+            error_message = message.arguments[2];
+          this->xmpp->send_stanza_error("iq", to_jid, std::to_string(iid), iq_id, "cancel", "not-allowed",
+                                        error_message, false);
+        }
+      return true;
+    };
+  this->add_waiting_irc(std::move(cb));
 }
 
 void Bridge::set_channel_topic(const Iid& iid, const std::string& subject)
@@ -284,7 +289,8 @@ void Bridge::send_irc_version_request(const std::string& irc_hostname, const std
 
   // TODO, add a timer to remove that waiting iq if the server does not
   // respond with a matching command before n seconds
-  this->add_waiting_iq([this, target, iq_id, to_jid, irc_hostname, from_jid](const std::string& hostname, const IrcMessage& message){
+  irc_responder_callback_t cb = [this, target, iq_id, to_jid, irc_hostname, from_jid](const std::string& hostname, const IrcMessage& message) -> bool
+    {
       if (irc_hostname != hostname)
         return false;
       IrcUser user(message.prefix);
@@ -307,10 +313,10 @@ void Bridge::send_irc_version_request(const std::string& irc_hostname, const std
           return true;
         }
       return false;
-    });
+    };
+  this->add_waiting_irc(std::move(cb));
 }
 
-
 void Bridge::send_message(const Iid& iid, const std::string& nick, const std::string& body, const bool muc)
 {
   if (muc)
@@ -447,18 +453,18 @@ void Bridge::remove_preferred_from_jid(const std::string& nick)
     this->preferred_user_from.erase(it);
 }
 
-void Bridge::add_waiting_iq(iq_responder_callback_t&& callback)
+void Bridge::add_waiting_irc(irc_responder_callback_t&& callback)
 {
-  this->waiting_iq.emplace_back(std::move(callback));
+  this->waiting_irc.emplace_back(std::move(callback));
 }
 
-void Bridge::trigger_response_iq(const std::string& irc_hostname, const IrcMessage& message)
+void Bridge::trigger_on_irc_message(const std::string& irc_hostname, const IrcMessage& message)
 {
-  auto it = this->waiting_iq.begin();
-  while (it != this->waiting_iq.end())
+  auto it = this->waiting_irc.begin();
+  while (it != this->waiting_irc.end())
     {
       if ((*it)(irc_hostname, message) == true)
-        it = this->waiting_iq.erase(it);
+        it = this->waiting_irc.erase(it);
       else
         ++it;
     }

src/bridge/bridge.hpp

@@ -17,11 +17,11 @@ class Poller;
 
 /**
  * A callback called for each IrcMessage we receive. If the message triggers
- * a response, it must send an iq and return true (in that case it is
- * removed from the list), otherwise it must do nothing and just return
+ * a response, it must send ore or more iq and return true (in that case it
+ * is removed from the list), otherwise it must do nothing and just return
  * false.
  */
-typedef std::function<bool(const std::string& irc_hostname, const IrcMessage& message)> iq_responder_callback_t;
+using irc_responder_callback_t = std::function<bool(const std::string& irc_hostname, const IrcMessage& message)>;
 
 /**
  * One bridge is spawned for each XMPP user that uses the component.  The
@@ -146,15 +146,15 @@ public:
    */
   void remove_preferred_from_jid(const std::string& nick);
   /**
-   * Add a callback to the waiting iq list.
+   * Add a callback to the waiting list of irc callbacks.
    */
-  void add_waiting_iq(iq_responder_callback_t&& callback);
+  void add_waiting_irc(irc_responder_callback_t&& callback);
   /**
    * Iter over all the waiting_iq, call the iq_responder_filter_t for each,
    * whenever one of them returns true: call the corresponding
    * iq_responder_callback_t and remove the callback from the list.
    */
-  void trigger_response_iq(const std::string& irc_hostname, const IrcMessage& message);
+  void trigger_on_irc_message(const std::string& irc_hostname, const IrcMessage& message);
 
 private:
   /**
@@ -203,7 +203,7 @@ private:
    * request and we need a response from IRC to be able to provide the
    * response iq.
    */
-  std::list<iq_responder_callback_t> waiting_iq;
+  std::list<irc_responder_callback_t> waiting_irc;
 
   Bridge(const Bridge&) = delete;
   Bridge(Bridge&& other) = delete;

src/irc/iid.hpp

@@ -42,7 +42,7 @@
 class Iid
 {
 public:
-  explicit Iid(const std::string& iid);
+  Iid(const std::string& iid);
   explicit Iid(const Iid&);
   explicit Iid();
 

src/irc/irc_client.cpp

@@ -156,7 +156,7 @@ void IrcClient::parse_in_buffer(const size_t)
       else
         log_info("No handler for command " << message.command);
       // Try to find a waiting_iq, which response will be triggered by this IrcMessage
-      this->bridge->trigger_response_iq(this->hostname, message);
+      this->bridge->trigger_on_irc_message(this->hostname, message);
     }
 }
 

src/xmpp/xmpp_component.cpp

@@ -577,6 +577,15 @@ void XmppComponent::handle_iq(const Stanza& stanza)
           const Iid iid(to.local);
           bridge->send_xmpp_version_to_irc(iid, name, version, os);
         }
+      else
+        {
+          const auto it = this->waiting_iq.find(id);
+          if (it != this->waiting_iq.end())
+            {
+              it->second(bridge, stanza);
+              this->waiting_iq.erase(it);
+            }
+        }
     }
   error_type = "cancel";
   error_name = "feature-not-implemented";

src/xmpp/xmpp_component.hpp

@@ -9,6 +9,7 @@
 #include <unordered_map>
 #include <memory>
 #include <string>
+#include <map>
 
 #define STREAM_NS        "http://etherx.jabber.org/streams"
 #define COMPONENT_NS     "jabber:component:accept"
@@ -23,6 +24,11 @@
 #define STREAMS_NS       "urn:ietf:params:xml:ns:xmpp-streams"
 #define VERSION_NS       "jabber:iq:version"
 #define ADHOC_NS         "http://jabber.org/protocol/commands"
+/**
+ * A callback called when the waited iq result is received (it is matched
+ * against the iq id)
+ */
+using iq_responder_callback_t = std::function<void(Bridge* bridge, const Stanza& stanza)>;
 
 /**
  * An XMPP component, communicating with an XMPP server using the protocole
@@ -256,6 +262,14 @@ private:
   std::unordered_map<std::string, std::function<void(const Stanza&)>> stanza_handlers;
   AdhocCommandsHandler adhoc_commands_handler;
 
+  /**
+   * A map of id -> callback.  When we want to wait for an iq result, we add
+   * the callback to this map, with the iq id as the key. When an iq result
+   * is received, we look for a corresponding callback in this map. If
+   * found, we call it and remove it.
+   */
+  std::map<std::string, iq_responder_callback_t> waiting_iq;
+
   /**
    * One bridge for each user of the component. Indexed by the user's full
    * jid