From bb596582bd2d8b9aab3fe08e76a7d24d82bf614a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Mon, 12 Mar 2018 00:04:26 +0100
Subject: Add a <item/> node in the presence of a leaving participant

fix #3339
---
 src/bridge/bridge.cpp        | 24 +++++++++++++++++-------
 src/bridge/bridge.hpp        |  2 +-
 src/irc/irc_channel.cpp      |  5 ++++-
 src/irc/irc_channel.hpp      |  2 +-
 src/irc/irc_client.cpp       | 17 ++++++++---------
 src/xmpp/xmpp_component.cpp  |  6 +++++-
 src/xmpp/xmpp_component.hpp  |  3 ++-
 tests/end_to_end/__main__.py |  3 ++-
 8 files changed, 40 insertions(+), 22 deletions(-)

diff --git a/src/bridge/bridge.cpp b/src/bridge/bridge.cpp
index cd3492f..9269bb7 100644
--- a/src/bridge/bridge.cpp
+++ b/src/bridge/bridge.cpp
@@ -419,7 +419,7 @@ void Bridge::leave_irc_channel(Iid&& iid, const std::string& status_message, con
         }
       else if (channel->joined)
         {
-          this->send_muc_leave(iid, channel->get_self()->nick, "", true, true, resource);
+          this->send_muc_leave(iid, *channel->get_self(), "", true, true, resource);
         }
       if (persistent)
         this->remove_resource_from_chan(key, resource);
@@ -430,7 +430,7 @@ void Bridge::leave_irc_channel(Iid&& iid, const std::string& status_message, con
   else
     {
       if (channel && channel->joined)
-        this->send_muc_leave(iid, channel->get_self()->nick,
+        this->send_muc_leave(iid, *channel->get_self(),
                              "Biboumi note: " + std::to_string(resources - 1) + " resources are still in this channel.",
                              true, true, resource);
       this->remove_resource_from_chan(key, resource);
@@ -847,19 +847,29 @@ void Bridge::send_presence_error(const Iid& iid, const std::string& nick,
   this->xmpp.send_presence_error(std::to_string(iid), nick, this->user_jid, type, condition, error_code, text);
 }
 
-void Bridge::send_muc_leave(const Iid& iid, const std::string& nick,
+void Bridge::send_muc_leave(const Iid& iid, const IrcUser& user,
                             const std::string& message, const bool self,
                             const bool user_requested,
                             const std::string& resource)
 {
+  const IrcClient* client = this->find_irc_client(iid.get_server());
+  if (!client)
+    {
+      log_error("Tried to send an unavailable presence for non existant client: ", std::to_string(iid));
+      return;
+    }
+  std::string affiliation;
+  std::string role;
+  std::tie(role, affiliation) = get_role_affiliation_from_irc_mode(user.get_most_significant_mode(client->get_sorted_user_modes()));
+
   if (!resource.empty())
-    this->xmpp.send_muc_leave(std::to_string(iid), nick, this->make_xmpp_body(message),
-                              this->user_jid + "/" + resource, self, user_requested);
+    this->xmpp.send_muc_leave(std::to_string(iid), user.nick, this->make_xmpp_body(message),
+                              this->user_jid + "/" + resource, self, user_requested, affiliation, role);
   else
     {
       for (const auto &res: this->resources_in_chan[iid.to_tuple()])
-        this->xmpp.send_muc_leave(std::to_string(iid), nick, this->make_xmpp_body(message),
-                                  this->user_jid + "/" + res, self, user_requested);
+        this->xmpp.send_muc_leave(std::to_string(iid), user.nick, this->make_xmpp_body(message),
+                                  this->user_jid + "/" + res, self, user_requested, affiliation, role);
       if (self)
         {
           // Copy the resources currently in that channel
diff --git a/src/bridge/bridge.hpp b/src/bridge/bridge.hpp
index c2f0233..44df4c2 100644
--- a/src/bridge/bridge.hpp
+++ b/src/bridge/bridge.hpp
@@ -170,7 +170,7 @@ public:
   /**
    * Send an unavailable presence from this participant
    */
-  void send_muc_leave(const Iid& iid, const std::string& nick,
+  void send_muc_leave(const Iid& iid, const IrcUser& nick,
                       const std::string& message, const bool self,
                       const bool user_requested,
                       const std::string& resource="");
diff --git a/src/irc/irc_channel.cpp b/src/irc/irc_channel.cpp
index 1fd34aa..58f8d5c 100644
--- a/src/irc/irc_channel.cpp
+++ b/src/irc/irc_channel.cpp
@@ -33,8 +33,9 @@ IrcUser* IrcChannel::find_user(const std::string& name) const
   return nullptr;
 }
 
-void IrcChannel::remove_user(const IrcUser* user)
+std::unique_ptr<IrcUser> IrcChannel::remove_user(const IrcUser* user)
 {
+  std::unique_ptr<IrcUser> result{};
   const auto nick = user->nick;
   const bool is_self = (user == this->self);
   const auto it = std::find_if(this->users.begin(), this->users.end(),
@@ -44,6 +45,7 @@ void IrcChannel::remove_user(const IrcUser* user)
                                });
   if (it != this->users.end())
     {
+      result = std::move(*it);
       this->users.erase(it);
       if (is_self)
         {
@@ -57,4 +59,5 @@ void IrcChannel::remove_all_users()
 {
   this->users.clear();
   this->self = nullptr;
+  return result;
 }
diff --git a/src/irc/irc_channel.hpp b/src/irc/irc_channel.hpp
index dff1b78..ee89209 100644
--- a/src/irc/irc_channel.hpp
+++ b/src/irc/irc_channel.hpp
@@ -32,8 +32,8 @@ public:
   IrcUser* add_user(const std::string& name,
                     const std::map<char, char>& prefix_to_mode);
   IrcUser* find_user(const std::string& name) const;
-  void remove_user(const IrcUser* user);
   void remove_all_users();
+  std::unique_ptr<IrcUser> remove_user(const IrcUser* user);
   const std::vector<std::unique_ptr<IrcUser>>& get_users() const
   { return this->users; }
 
diff --git a/src/irc/irc_client.cpp b/src/irc/irc_client.cpp
index a866726..c5ef36c 100644
--- a/src/irc/irc_client.cpp
+++ b/src/irc/irc_client.cpp
@@ -951,18 +951,18 @@ void IrcClient::on_part(const IrcMessage& message)
     {
       std::string nick = user->nick;
       bool self = channel->get_self() && channel->get_self()->nick == nick;
-      channel->remove_user(user);
-      Iid iid;
-      iid.set_local(chan_name);
-      iid.set_server(this->hostname);
-      iid.type = Iid::Type::Channel;
+      auto user_ptr = channel->remove_user(user);
       if (self)
       {
         this->channels.erase(utils::tolower(chan_name));
         // channel pointer is now invalid
         channel = nullptr;
       }
-      this->bridge.send_muc_leave(iid, std::move(nick), txt, self, true);
+      Iid iid;
+      iid.set_local(chan_name);
+      iid.set_server(this->hostname);
+      iid.type = Iid::Type::Channel;
+      this->bridge.send_muc_leave(iid, *user_ptr, txt, self, true);
     }
 }
 
@@ -979,8 +979,7 @@ void IrcClient::on_error(const IrcMessage& message)
     IrcChannel* channel = pair.second.get();
     if (!channel->joined)
       continue;
-    std::string own_nick = channel->get_self()->nick;
-      this->bridge.send_muc_leave(iid, std::move(own_nick), leave_message, true, false);
+    this->bridge.send_muc_leave(iid, *channel->get_self(), leave_message, true, false);
   }
   this->channels.clear();
   this->send_gateway_message("ERROR: " + leave_message);
@@ -1005,7 +1004,7 @@ void IrcClient::on_quit(const IrcMessage& message)
       iid.set_local(chan_name);
       iid.set_server(this->hostname);
       iid.type = Iid::Type::Channel;
-      this->bridge.send_muc_leave(iid, user->nick, txt, self, false);
+      this->bridge.send_muc_leave(iid, *user, txt, self, false);
       channel->remove_user(user);
     }
 }
diff --git a/src/xmpp/xmpp_component.cpp b/src/xmpp/xmpp_component.cpp
index 9be9e34..a71d810 100644
--- a/src/xmpp/xmpp_component.cpp
+++ b/src/xmpp/xmpp_component.cpp
@@ -425,7 +425,8 @@ void XmppComponent::send_history_message(const std::string& muc_name, const std:
 #endif
 
 void XmppComponent::send_muc_leave(const std::string& muc_name, const std::string& nick, Xmpp::body&& message,
-                                   const std::string& jid_to, const bool self, const bool user_requested)
+                                   const std::string& jid_to, const bool self, const bool user_requested,
+                                   const std::string& affiliation, const std::string& role)
 {
   Stanza presence("presence");
   {
@@ -447,6 +448,9 @@ void XmppComponent::send_muc_leave(const std::string& muc_name, const std::strin
             status["code"] = "332";
           }
       }
+    XmlSubNode item(x, "item");
+    item["affiliation"] = affiliation;
+    item["role"] = role;
     if (!message_str.empty())
       {
         XmlSubNode status(presence, "status");
diff --git a/src/xmpp/xmpp_component.hpp b/src/xmpp/xmpp_component.hpp
index 1daa6fb..06cc6ff 100644
--- a/src/xmpp/xmpp_component.hpp
+++ b/src/xmpp/xmpp_component.hpp
@@ -150,7 +150,8 @@ public:
                       Xmpp::body&& message,
                       const std::string& jid_to,
                       const bool self,
-                      const bool user_requested);
+                      const bool user_requested,
+                      const std::string& affiliation, const std::string& role);
   /**
    * Indicate that a participant changed his nick
    */
diff --git a/tests/end_to_end/__main__.py b/tests/end_to_end/__main__.py
index f09b765..af61547 100644
--- a/tests/end_to_end/__main__.py
+++ b/tests/end_to_end/__main__.py
@@ -1149,7 +1149,8 @@ if __name__ == '__main__':
                      "<presence from='{jid_one}/{resource_one}' to='#foo%{irc_server_one}/{nick_one}' type='unavailable' />"),
                      # Only user 1 receives the unavailable presence
                      partial(expect_stanza,
-                             "/presence[@from='#foo%{irc_server_one}/{nick_one}'][@to='{jid_one}/{resource_one}'][@type='unavailable']/muc_user:x/muc_user:status[@code='110']"),
+                             ("/presence[@from='#foo%{irc_server_one}/{nick_one}'][@to='{jid_one}/{resource_one}'][@type='unavailable']/muc_user:x/muc_user:status[@code='110']",
+                              "/presence/muc_user:x/muc_user:item[@affiliation='admin'][@role='moderator']")),
 
                      # Second user sends a channel message
                      partial(send_stanza, "<message type='groupchat' from='{jid_two}/{resource_one}' to='#foo%{irc_server_one}'><body>coucou</body></message>"),
-- 
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