Add support for the "history" node on MUC join

Supports the "seconds", "maxstanzas", "since" and "maxchars" (but only =0)
attributes.

fix #3270

src/irc/irc_client.cpp

@@ -784,7 +784,7 @@ void IrcClient::on_channel_completely_joined(const IrcMessage& message)
   channel->joined = true;
   this->bridge.send_user_join(this->hostname, chan_name, channel->get_self(),
                               channel->get_self()->get_most_significant_mode(this->sorted_user_modes), true);
-  this->bridge.send_room_history(this->hostname, chan_name);
+  this->bridge.send_room_history(this->hostname, chan_name, this->history_limit);
   this->bridge.send_topic(this->hostname, chan_name, channel->topic, channel->topic_author);
 }
 

src/irc/irc_client.hpp

@@ -5,6 +5,8 @@
 #include <irc/irc_channel.hpp>
 #include <irc/iid.hpp>
 
+#include <bridge/history_limit.hpp>
+
 #include <network/tcp_client_socket_handler.hpp>
 #include <network/resolver.hpp>
 
@@ -296,6 +298,11 @@ public:
   const std::vector<char>& get_sorted_user_modes() const { return this->sorted_user_modes; }
 
   std::set<char> get_chantypes() const { return this->chantypes; }
+
+  /**
+   * Store the history limit that the client asked when joining this room.
+   */
+  HistoryLimit history_limit;
 private:
   /**
    * The hostname of the server we are connected to.