Don’t use ! as the separator for nicknames, use % instead

It’s now easier to use. The distinction between a nick and a channel name is
based on the first character (by default it's '#' and '&'). The user doesn’t
have to worry about which separator to use anymore.

fix #3066

8 files changed, 157 insertions, 133 deletions

diff --git a/src/bridge/bridge.cpp b/src/bridge/bridge.cpp
index 17d3ec6..ac61dbc 100644
--- a/src/bridge/bridge.cpp
+++ b/src/bridge/bridge.cpp
@@ -133,7 +133,7 @@ IrcClient* Bridge::get_irc_client(const std::string& hostname)
     }
 }
 
-IrcClient* Bridge::find_irc_client(const std::string& hostname)
+IrcClient* Bridge::find_irc_client(const std::string& hostname) const
 {
   try
     {
@@ -470,7 +470,7 @@ void Bridge::send_irc_user_ping_request(const std::string& irc_hostname, const s
                                         const std::string& iq_id, const std::string& to_jid,
                                         const std::string& from_jid)
 {
-  Iid iid(nick + "!" + irc_hostname);
+  Iid iid(nick, irc_hostname, Iid::Type::User);
   this->send_private_message(iid, "\01PING " + iq_id + "\01");
 
   irc_responder_callback_t cb = [this, nick=utils::tolower(nick), iq_id, to_jid, irc_hostname, from_jid](const std::string& hostname, const IrcMessage& message) -> bool
@@ -541,7 +541,7 @@ void Bridge::send_irc_version_request(const std::string& irc_hostname, const std
                                       const std::string& iq_id, const std::string& to_jid,
                                       const std::string& from_jid)
 {
-  Iid iid(target + "!" + irc_hostname);
+  Iid iid(target, irc_hostname, Iid::Type::User);
   this->send_private_message(iid, "\01VERSION\01");
   // TODO, add a timer to remove that waiting iq if the server does not
   // respond with a matching command before n seconds
@@ -590,7 +590,7 @@ void Bridge::send_message(const Iid& iid, const std::string& nick, const std::st
       const auto it = this->preferred_user_from.find(iid.get_local());
       if (it != this->preferred_user_from.end())
         {
-          const auto chan_name = Iid(Jid(it->second).local).get_local();
+          const auto chan_name = Iid(Jid(it->second).local, {}).get_local();
           for (const auto& resource: this->resources_in_chan[ChannelKey{chan_name, iid.get_server()}])
             this->xmpp.send_message(it->second, this->make_xmpp_body(body, encoding),
                                     this->user_jid + "/" + resource, "chat", true);
@@ -653,7 +653,7 @@ void Bridge::send_xmpp_message(const std::string& from, const std::string& autho
   else
     body = msg;
 
-  const auto encoding = in_encoding_for(*this, {from});
+  const auto encoding = in_encoding_for(*this, {from, this});
   for (const auto& resource: this->resources_in_server[from])
     {
         this->xmpp.send_message(from, this->make_xmpp_body(body, encoding), this->user_jid + "/" + resource, "chat");
@@ -696,7 +696,7 @@ void Bridge::send_topic(const std::string& hostname, const std::string& chan_nam
 {
   std::string encoded_chan_name(chan_name);
   xep0106::encode(encoded_chan_name);
-  const auto encoding = in_encoding_for(*this, {encoded_chan_name + '%' + hostname});
+  const auto encoding = in_encoding_for(*this, {encoded_chan_name, hostname, Iid::Type::Channel});
   this->xmpp.send_topic(encoded_chan_name + utils::empty_if_fixed_server(
       "%" + hostname), this->make_xmpp_body(topic, encoding), this->user_jid + "/" + resource, who);
 
@@ -741,7 +741,7 @@ void Bridge::send_iq_version_request(const std::string& nick, const std::string&
 {
   const auto resources = this->resources_in_server[hostname];
   if (resources.begin() != resources.end())
-    this->xmpp.send_iq_version_request(utils::tolower(nick) + "!" + utils::empty_if_fixed_server(hostname), this->user_jid + "/" + *resources.begin());
+    this->xmpp.send_iq_version_request(utils::tolower(nick) + "%" + utils::empty_if_fixed_server(hostname), this->user_jid + "/" + *resources.begin());
 }
 
 void Bridge::send_xmpp_ping_request(const std::string& nick, const std::string& hostname,
@@ -753,7 +753,7 @@ void Bridge::send_xmpp_ping_request(const std::string& nick, const std::string&
   // Forward to the first resource (arbitrary, based on the “order” of the std::set) only
   const auto resources = this->resources_in_server[hostname];
   if (resources.begin() != resources.end())
-    this->xmpp.send_ping_request(utils::tolower(nick) + "!" + utils::empty_if_fixed_server(hostname), this->user_jid + "/" + *resources.begin(), utils::revstr(id));
+    this->xmpp.send_ping_request(utils::tolower(nick) + "%" + utils::empty_if_fixed_server(hostname), this->user_jid + "/" + *resources.begin(), utils::revstr(id));
 }
 
 void Bridge::set_preferred_from_jid(const std::string& nick, const std::string& full_jid)
@@ -776,7 +776,7 @@ void Bridge::remove_all_preferred_from_jid_of_room(const std::string& channel_na
 {
   for (auto it = this->preferred_user_from.begin(); it != this->preferred_user_from.end();)
     {
-      Iid iid(Jid(it->second).local);
+      Iid iid(Jid(it->second).local, {});
       if (iid.get_local() == channel_name)
         it = this->preferred_user_from.erase(it);
       else
@@ -806,6 +806,14 @@ std::unordered_map<std::string, std::shared_ptr<IrcClient>>& Bridge::get_irc_cli
   return this->irc_clients;
 }
 
+std::set<char> Bridge::get_chantypes(const std::string& hostname) const
+{
+  IrcClient* irc = this->find_irc_client(hostname);
+  if (!irc)
+    return {'#', '&'};
+  return irc->get_chantypes();
+}
+
 void Bridge::add_resource_to_chan(const Bridge::ChannelKey& channel, const std::string& resource)
 {
   auto it = this->resources_in_chan.find(channel);
diff --git a/src/bridge/bridge.hpp b/src/bridge/bridge.hpp
index 69b7bd5..d7b2a5c 100644
--- a/src/bridge/bridge.hpp
+++ b/src/bridge/bridge.hpp
@@ -201,6 +201,7 @@ public:
    */
   void trigger_on_irc_message(const std::string& irc_hostname, const IrcMessage& message);
   std::unordered_map<std::string, std::shared_ptr<IrcClient>>& get_irc_clients();
+  std::set<char> get_chantypes(const std::string& hostname) const;
 
 private:
   /**
@@ -217,7 +218,7 @@ private:
   /**
    * Idem, but returns nullptr if the server does not exist.
    */
-  IrcClient* find_irc_client(const std::string& hostname);
+  IrcClient* find_irc_client(const std::string& hostname) const;
   /**
    * The bare JID of the user associated with this bridge. Messages from/to this
    * JID are only managed by this bridge.
diff --git a/src/irc/iid.cpp b/src/irc/iid.cpp
index 0e2841e..c951a49 100644
--- a/src/irc/iid.cpp
+++ b/src/irc/iid.cpp
@@ -1,62 +1,70 @@
 #include <utils/tolower.hpp>
 #include <config/config.hpp>
-
+#include <bridge/bridge.hpp>
 #include <irc/iid.hpp>
 
 #include <utils/encoding.hpp>
 
-Iid::Iid(const std::string& iid):
-  is_channel(false),
-  is_user(false)
+Iid::Iid(const std::string local, const std::string server, Iid::Type type):
+        type(type),
+        local(local),
+        server(server)
 {
-  const std::string fixed_irc_server = Config::get("fixed_irc_server", "");
-  if (fixed_irc_server.empty())
-    this->init(iid);
-  else
-    this->init_with_fixed_server(iid, fixed_irc_server);
 }
 
+Iid::Iid(const std::string& iid, const std::set<char>& chantypes)
+{
+  this->init(iid);
+  this->set_type(std::set<char>(chantypes));
+}
 
-void Iid::init(const std::string& iid)
+Iid::Iid(const std::string& iid, const std::initializer_list<char>& chantypes):
+    Iid(iid, std::set<char>(chantypes))
 {
-  const std::string::size_type sep = iid.find_first_of("%!");
-  if (sep != std::string::npos)
-    {
-      if (iid[sep] == '%')
-        this->is_channel = true;
-      else
-        this->is_user = true;
-      this->set_local(iid.substr(0, sep));
-      this->set_server(iid.substr(sep + 1));
-    }
-  else
-    this->set_server(iid);
 }
 
-void Iid::init_with_fixed_server(const std::string& iid, const std::string& hostname)
+Iid::Iid(const std::string& iid, const Bridge *bridge)
+{
+  this->init(iid);
+  const auto chantypes = bridge->get_chantypes(this->server);
+  this->set_type(chantypes);
+}
+
+void Iid::set_type(const std::set<char>& chantypes)
 {
-  this->set_server(hostname);
+  if (this->local.empty())
+    return;
 
-  const std::string::size_type sep = iid.find("!");
+  if (chantypes.count(this->local[0]) == 1)
+    this->type = Iid::Type::Channel;
+  else
+    this->type = Iid::Type::User;
+}
 
-  // Without any separator, we consider that it's a channel
-  if (sep == std::string::npos)
+void Iid::init(const std::string& iid)
+{
+  const std::string fixed_irc_server = Config::get("fixed_irc_server", "");
+
+  if (fixed_irc_server.empty())
+  {
+    const std::string::size_type sep = iid.find('%');
+    if (sep != std::string::npos)
     {
-      this->is_channel = true;
-      this->set_local(iid);
+      this->set_local(iid.substr(0, sep));
+      this->set_server(iid.substr(sep + 1));
+      this->type = Iid::Type::Channel;
     }
-  else // A separator can be present to differenciate a channel from a user,
-       // but the part behind it (the hostname) is ignored
+    else
     {
-      this->set_local(iid.substr(0, sep));
-        this->is_user = true;
+      this->set_server(iid);
+      this->type = Iid::Type::Server;
     }
-}
-
-Iid::Iid():
-  is_channel(false),
-  is_user(false)
-{
+  }
+  else
+  {
+    this->set_server(fixed_irc_server);
+    this->set_local(iid);
+  }
 }
 
 void Iid::set_local(const std::string& loc)
@@ -88,27 +96,18 @@ const std::string& Iid::get_server() const
   return this->server;
 }
 
-std::string Iid::get_sep() const
-{
-  if (this->is_channel)
-    return "%";
-  else if (this->is_user)
-    return "!";
-  return "";
-}
-
 namespace std {
   const std::string to_string(const Iid& iid)
   {
     if (Config::get("fixed_irc_server", "").empty())
-      return iid.get_encoded_local() + iid.get_sep() + iid.get_server();
+    {
+      if (iid.type == Iid::Type::Server)
+        return iid.get_server();
+      else
+        return iid.get_encoded_local() + iid.separator + iid.get_server();
+    }
     else
-      {
-        if (iid.get_sep() == "!")
-          return iid.get_encoded_local() + iid.get_sep();
-        else
-          return iid.get_encoded_local();
-      }
+      return iid.get_encoded_local();
   }
 }
 
diff --git a/src/irc/iid.hpp b/src/irc/iid.hpp
index 3b11470..7361c51 100644
--- a/src/irc/iid.hpp
+++ b/src/irc/iid.hpp
@@ -2,48 +2,64 @@
 
 
 #include <string>
+#include <set>
+
+class Bridge;
 
 /**
  * A name representing an IRC channel on an IRC server, or an IRC user on an
  * IRC server, or just an IRC server.
  *
- * The separator for an user is '!', for a channel it's '%'. If no separator
- * is present, it's just an irc server.
+ * The separator is '%' between the local part (nickname or channel) and the
+ * server part. If no separator is present, it's just an irc server.
+ * If it is present, the first character of the local part determines if it’s
+ * a channel or a user: ff the local part is empty or if its first character
+ * is part of the chantypes characters, then it’s a channel, otherwise it’s
+ * a user.
+ *
  * It’s possible to have an empty-string server, but it makes no sense in
- * the biboumi context.
+ * biboumi’s context.
+ *
+ * Assuming the chantypes are '#' and '&':
  *
  * #test%irc.example.org has :
  * - local: "#test" (the # is part of the name, it could very well be absent, or & (for example) instead)
  * - server: "irc.example.org"
- * - is_channel: true
- * - is_user: false
+ * - type: channel
  *
  * %irc.example.org:
  * - local: ""
  * - server: "irc.example.org"
- * - is_channel: true
- * - is_user: false
- * Note: this is the special empty-string channel, used internal in biboumi
+ * - type: channel
+ * Note: this is the special empty-string channel, used internally in biboumi
  * but has no meaning on IRC.
  *
- * foo!irc.example.org
+ * foo%irc.example.org
  * - local: "foo"
  * - server: "irc.example.org"
- * - is_channel: false
- * - is_user: true
- * Note: the empty-string user (!irc.example.org) has no special meaning in biboumi
+ * - type: user
+ * Note: the empty-string user (!irc.example.org) makes no sense for biboumi
  *
  * irc.example.org:
  * - local: ""
  * - server: "irc.example.org"
- * - is_channel: false
- * - is_user: false
+ * - type: server
  */
 class Iid
 {
 public:
-  Iid(const std::string& iid);
-  Iid();
+  enum class Type
+  {
+      Channel,
+      User,
+      Server,
+  };
+  static constexpr auto separator = "%";
+  Iid(const std::string& iid, const std::set<char>& chantypes);
+  Iid(const std::string& iid, const std::initializer_list<char>& chantypes);
+  Iid(const std::string& iid, const Bridge* bridge);
+  Iid(const std::string local, const std::string server, Type type);
+  Iid() = default;
   Iid(const Iid&) = default;
 
   Iid(Iid&&) = delete;
@@ -52,21 +68,19 @@ public:
 
   void set_local(const std::string& loc);
   void set_server(const std::string& serv);
+
   const std::string& get_local() const;
   const std::string get_encoded_local() const;
   const std::string& get_server() const;
 
-  bool is_channel;
-  bool is_user;
-
-  std::string get_sep() const;
-
   std::tuple<std::string, std::string> to_tuple() const;
 
+  Type type { Type::Server };
+
 private:
 
   void init(const std::string& iid);
-  void init_with_fixed_server(const std::string& iid, const std::string& hostname);
+  void set_type(const std::set<char>& chantypes);
 
   std::string local;
   std::string server;
diff --git a/src/irc/irc_client.cpp b/src/irc/irc_client.cpp
index dd83307..d00b6ee 100644
--- a/src/irc/irc_client.cpp
+++ b/src/irc/irc_client.cpp
@@ -213,7 +213,7 @@ void IrcClient::on_connection_failed(const std::string& reason)
       // Send an error message for all room that the user wanted to join
       for (const auto& tuple: this->channels_to_join)
         {
-          Iid iid(std::get<0>(tuple) + "%" + this->hostname);
+          Iid iid(std::get<0>(tuple) + "%" + this->hostname, this->chantypes);
           this->bridge.send_presence_error(iid, this->current_nick,
                                             "cancel", "item-not-found",
                                             "", reason);
@@ -551,7 +551,7 @@ void IrcClient::on_notice(const IrcMessage& message)
       if (this->nicks_to_treat_as_private.find(nick) !=
           this->nicks_to_treat_as_private.end())
         { // We previously sent a message to that nick)
-          this->bridge.send_message({nick + "!" + this->hostname}, nick, body,
+          this->bridge.send_message({nick, this->hostname, Iid::Type::User}, nick, body,
                                      false);
         }
       else
@@ -663,12 +663,12 @@ void IrcClient::on_channel_message(const IrcMessage& message)
   bool muc = true;
   if (!this->get_channel(iid.get_local())->joined)
     {
-      iid.is_user = true;
+      iid.type = Iid::Type::User;
       iid.set_local(nick);
       muc = false;
     }
   else
-    iid.is_channel = true;
+    iid.type = Iid::Type::Channel;
   if (!body.empty() && body[0] == '\01')
     {
       if (body.substr(1, 6) == "ACTION")
@@ -780,7 +780,7 @@ void IrcClient::on_nickname_conflict(const IrcMessage& message)
     Iid iid;
     iid.set_local(it->first);
     iid.set_server(this->hostname);
-    iid.is_channel = true;
+    iid.type = Iid::Type::Channel;
     this->bridge.send_nickname_conflict_error(iid, nickname);
   }
 }
@@ -797,7 +797,7 @@ void IrcClient::on_nickname_change_too_fast(const IrcMessage& message)
     Iid iid;
     iid.set_local(it->first);
     iid.set_server(this->hostname);
-    iid.is_channel = true;
+    iid.type = Iid::Type::Channel;
     this->bridge.send_presence_error(iid, nickname,
                                       "cancel", "not-acceptable",
                                       "", txt);
@@ -858,7 +858,7 @@ void IrcClient::on_part(const IrcMessage& message)
       Iid iid;
       iid.set_local(chan_name);
       iid.set_server(this->hostname);
-      iid.is_channel = true;
+      iid.type = Iid::Type::Channel;
       bool self = channel->get_self()->nick == nick;
       if (self)
       {
@@ -880,7 +880,7 @@ void IrcClient::on_error(const IrcMessage& message)
     Iid iid;
     iid.set_local(it->first);
     iid.set_server(this->hostname);
-    iid.is_channel = true;
+    iid.type = Iid::Type::Channel;
     IrcChannel* channel = it->second.get();
     if (!channel->joined)
       continue;
@@ -908,7 +908,7 @@ void IrcClient::on_quit(const IrcMessage& message)
           Iid iid;
           iid.set_local(chan_name);
           iid.set_server(this->hostname);
-          iid.is_channel = true;
+          iid.type = Iid::Type::Channel;
           this->bridge.send_muc_leave(std::move(iid), std::move(nick), txt, false);
         }
     }
@@ -928,7 +928,7 @@ void IrcClient::on_nick(const IrcMessage& message)
           Iid iid;
           iid.set_local(chan_name);
           iid.set_server(this->hostname);
-          iid.is_channel = true;
+          iid.type = Iid::Type::Channel;
           const bool self = channel->get_self()->nick == old_nick;
           const char user_mode = user->get_most_significant_mode(this->sorted_user_modes);
           this->bridge.send_nick_change(std::move(iid), old_nick, new_nick, user_mode, self);
@@ -956,7 +956,7 @@ void IrcClient::on_kick(const IrcMessage& message)
   Iid iid;
   iid.set_local(chan_name);
   iid.set_server(this->hostname);
-  iid.is_channel = true;
+  iid.type = Iid::Type::Channel;
   this->bridge.kick_muc_user(std::move(iid), target, reason, author.nick);
 }
 
@@ -976,7 +976,7 @@ void IrcClient::on_channel_mode(const IrcMessage& message)
   Iid iid;
   iid.set_local(message.arguments[0]);
   iid.set_server(this->hostname);
-  iid.is_channel = true;
+  iid.type = Iid::Type::Channel;
   IrcUser user(message.prefix);
   std::string mode_arguments;
   for (size_t i = 1; i < message.arguments.size(); ++i)
@@ -1105,7 +1105,7 @@ void IrcClient::leave_dummy_channel(const std::string& exit_message)
   this->dummy_channel.joined = false;
   this->dummy_channel.joining = false;
   this->dummy_channel.remove_all_users();
-  this->bridge.send_muc_leave(Iid("%"s + this->hostname), std::string(this->current_nick), exit_message, true);
+  this->bridge.send_muc_leave(Iid("%"s + this->hostname, this->chantypes), std::string(this->current_nick), exit_message, true);
 }
 
 #ifdef BOTAN_FOUND
diff --git a/src/irc/irc_client.hpp b/src/irc/irc_client.hpp
index fc3918e..fa35e65 100644
--- a/src/irc/irc_client.hpp
+++ b/src/irc/irc_client.hpp
@@ -280,8 +280,9 @@ public:
 
   const Resolver& get_resolver() const { return this->dns_resolver; }
 
-  const std::vector<char>& get_sorted_user_modes() const { return sorted_user_modes; }
+  const std::vector<char>& get_sorted_user_modes() const { return this->sorted_user_modes; }
 
+  std::set<char> get_chantypes() const { return this->chantypes; }
 private:
   /**
    * The hostname of the server we are connected to.
diff --git a/src/xmpp/biboumi_adhoc_commands.cpp b/src/xmpp/biboumi_adhoc_commands.cpp
index eec930d..b14081f 100644
--- a/src/xmpp/biboumi_adhoc_commands.cpp
+++ b/src/xmpp/biboumi_adhoc_commands.cpp
@@ -381,7 +381,7 @@ void ConfigureIrcChannelStep1(XmppComponent&, AdhocSession& session, XmlNode& co
 {
   const Jid owner(session.get_owner_jid());
   const Jid target(session.get_target_jid());
-  const Iid iid(target.local);
+  const Iid iid(target.local, {});
   auto options = Database::get_irc_channel_options_with_server_default(owner.local + "@" + owner.domain,
                                                                        iid.get_server(), iid.get_local());
 
@@ -434,7 +434,7 @@ void ConfigureIrcChannelStep2(XmppComponent&, AdhocSession& session, XmlNode& co
     {
       const Jid owner(session.get_owner_jid());
       const Jid target(session.get_target_jid());
-      const Iid iid(target.local);
+      const Iid iid(target.local, {});
       auto options = Database::get_irc_channel_options(owner.local + "@" + owner.domain,
                                                        iid.get_server(), iid.get_local());
       for (const XmlNode* field: x->get_children("field", "jabber:x:data"))
diff --git a/src/xmpp/biboumi_component.cpp b/src/xmpp/biboumi_component.cpp
index a6aac21..f621a6d 100644
--- a/src/xmpp/biboumi_component.cpp
+++ b/src/xmpp/biboumi_component.cpp
@@ -126,7 +126,7 @@ void BiboumiComponent::handle_presence(const Stanza& stanza)
   Bridge* bridge = this->get_user_bridge(from_str);
   Jid to(to_str);
   Jid from(from_str);
-  Iid iid(to.local);
+  Iid iid(to.local, bridge);
 
   // An error stanza is sent whenever we exit this function without
   // disabling this scopeguard.  If error_type and error_name are not
@@ -142,7 +142,7 @@ void BiboumiComponent::handle_presence(const Stanza& stanza)
         });
 
   try {
-  if (iid.is_channel && !iid.get_server().empty())
+  if (iid.type == Iid::Type::Channel && !iid.get_server().empty())
     { // presence toward a MUC that corresponds to an irc channel, or a
       // dummy channel if iid.chan is empty
       if (type.empty())
@@ -191,7 +191,7 @@ void BiboumiComponent::handle_message(const Stanza& stanza)
     type = "normal";
   Bridge* bridge = this->get_user_bridge(from);
   Jid to(to_str);
-  Iid iid(to.local);
+  Iid iid(to.local, bridge);
 
   std::string error_type("cancel");
   std::string error_name("internal-server-error");
@@ -202,7 +202,7 @@ void BiboumiComponent::handle_message(const Stanza& stanza)
   const XmlNode* body = stanza.get_child("body", COMPONENT_NS);
 
   try {                         // catch IRCNotConnected exceptions
-  if (type == "groupchat" && iid.is_channel)
+  if (type == "groupchat" && iid.type == Iid::Type::Channel)
     {
       if (body && !body->get_inner().empty())
         {
@@ -234,27 +234,27 @@ void BiboumiComponent::handle_message(const Stanza& stanza)
       if (body && !body->get_inner().empty())
         {
           // a message for nick!server
-          if (iid.is_user && !iid.get_local().empty())
+          if (iid.type == Iid::Type::User && !iid.get_local().empty())
             {
               bridge->send_private_message(iid, body->get_inner());
               bridge->remove_preferred_from_jid(iid.get_local());
             }
-          else if (!iid.is_user && !to.resource.empty())
+          else if (iid.type != Iid::Type::User && !to.resource.empty())
             { // a message for chan%server@biboumi/Nick or
               // server@biboumi/Nick
               // Convert that into a message to nick!server
-              Iid user_iid(utils::tolower(to.resource) + "!" + iid.get_server());
+              Iid user_iid(utils::tolower(to.resource), iid.get_server(), Iid::Type::User);
               bridge->send_private_message(user_iid, body->get_inner());
               bridge->set_preferred_from_jid(user_iid.get_local(), to_str);
             }
-          else if (!iid.is_user && !iid.is_channel)
+          else if (iid.type == Iid::Type::Server)
             { // Message sent to the server JID
               // Convert the message body into a raw IRC message
               bridge->send_raw_message(iid.get_server(), body->get_inner());
             }
         }
     }
-  else if (iid.is_user)
+  else if (iid.type == Iid::Type::User)
     this->send_invalid_user_error(to.local, from);
   } catch (const IRCNotConnected& ex)
     {
@@ -321,7 +321,7 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
               std::string affiliation = child->get_tag("affiliation");
               if (!nick.empty())
                 {
-                  Iid iid(to.local);
+                  Iid iid(to.local, {});
                   if (role == "none")
                     {               // This is a kick
                       std::string reason;
@@ -345,15 +345,17 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
 
           // Depending on the 'to' jid in the request, we use one adhoc
           // command handler or an other
-          Iid iid(to.local);
+          Iid iid(to.local, {});
           AdhocCommandsHandler* adhoc_handler;
-          if (!to.local.empty() && !iid.is_user && !iid.is_channel)
-            adhoc_handler = &this->irc_server_adhoc_commands_handler;
-          else if (!to.local.empty() && iid.is_channel)
-            adhoc_handler = &this->irc_channel_adhoc_commands_handler;
-          else
+          if (to.local.empty())
             adhoc_handler = &this->adhoc_commands_handler;
-
+          else
+          {
+            if (iid.type == Iid::Type::Server)
+              adhoc_handler = &this->irc_server_adhoc_commands_handler;
+            else
+              adhoc_handler = &this->irc_channel_adhoc_commands_handler;
+          }
           // Execute the command, if any, and get a result XmlNode that we
           // insert in our response
           XmlNode inner_node = adhoc_handler->handle_request(from, to_str, *query);
@@ -384,13 +386,12 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
         }
       else if ((query = stanza.get_child("query", VERSION_NS)))
         {
-          Iid iid(to.local);
-          if (iid.is_user ||
-              (iid.is_channel && !to.resource.empty()))
+          Iid iid(to.local, bridge);
+          if (iid.type != Iid::Type::Server && !to.resource.empty())
             {
               // Get the IRC user version
               std::string target;
-              if (iid.is_user)
+              if (iid.type == Iid::Type::User)
                 target = iid.get_local();
               else
                 target = to.resource;
@@ -406,7 +407,7 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
         }
       else if ((query = stanza.get_child("query", DISCO_ITEMS_NS)))
         {
-          Iid iid(to.local);
+          Iid iid(to.local, bridge);
           const std::string node = query->get_tag("node");
           if (node == ADHOC_NS)
             {
@@ -419,7 +420,7 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
                                                  this->adhoc_commands_handler);
                   stanza_error.disable();
                 }
-              else if (!iid.is_user && !iid.is_channel)
+              else if (iid.type == Iid::Type::Server)
                 {               // Get the server's adhoc commands
                   this->send_adhoc_commands_list(id, from, to_str,
                                                  (Config::get("admin", "") ==
@@ -427,7 +428,7 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
                                                  this->irc_server_adhoc_commands_handler);
                   stanza_error.disable();
                 }
-              else if (!iid.is_user && iid.is_channel)
+              else if (iid.type == Iid::Type::Channel)
                 {               // Get the channel's adhoc commands
                   this->send_adhoc_commands_list(id, from, to_str,
                                                  (Config::get("admin", "") ==
@@ -436,7 +437,7 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
                   stanza_error.disable();
                 }
             }
-          else if (node.empty() && !iid.is_user && !iid.is_channel)
+          else if (node.empty() && iid.type == Iid::Type::Server)
             { // Disco on an IRC server: get the list of channels
               bridge->send_irc_channel_list_request(iid, id, from);
               stanza_error.disable();
@@ -444,13 +445,13 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
         }
       else if ((query = stanza.get_child("ping", PING_NS)))
         {
-          Iid iid(to.local);
-          if (iid.is_user)
+          Iid iid(to.local, bridge);
+          if (iid.type == Iid::Type::User)
             { // Ping any user (no check on the nick done ourself)
               bridge->send_irc_user_ping_request(iid.get_server(),
                                                  iid.get_local(), id, from, to_str);
             }
-          else if (iid.is_channel && !to.resource.empty())
+          else if (iid.type == Iid::Type::Channel && !to.resource.empty())
             { // Ping a room participant (we check if the nick is in the room)
               bridge->send_irc_participant_ping_request(iid,
                                                         to.resource, id, from, to_str);
@@ -481,7 +482,7 @@ void BiboumiComponent::handle_iq(const Stanza& stanza)
             version = version_node->get_inner();
           if (os_node)
             os = os_node->get_inner();
-          const Iid iid(to.local);
+          const Iid iid(to.local, bridge);
           bridge->send_xmpp_version_to_irc(iid, name, version, os);
         }
       else
@@ -604,7 +605,7 @@ void BiboumiComponent::send_ping_request(const std::string& from,
                     "the response mismatches the 'from' of the request");
         }
       else
-        bridge->send_irc_ping_result(from, id);
+        bridge->send_irc_ping_result({from, bridge}, id);
     };
   this->waiting_iq[id] = result_cb;
 }