From eca31ce8db104f17ac74fd74aa9d7ef7e8f1470a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Sun, 11 Dec 2016 17:05:52 +0100
Subject: Do not change the nick when joining a second room with a different
 nick

As the doc says, the nick changes must be explicit in an already joined
room, and not when joining a room.
---
 src/bridge/bridge.cpp          | 6 +++++-
 src/bridge/bridge.hpp          | 2 +-
 src/xmpp/biboumi_component.cpp | 2 +-
 3 files changed, 7 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/bridge/bridge.cpp b/src/bridge/bridge.cpp
index 6fb03bd..1841b95 100644
--- a/src/bridge/bridge.cpp
+++ b/src/bridge/bridge.cpp
@@ -393,8 +393,12 @@ void Bridge::leave_irc_channel(Iid&& iid, const std::string& status_message, con
     }
 }
 
-void Bridge::send_irc_nick_change(const Iid& iid, const std::string& new_nick)
+void Bridge::send_irc_nick_change(const Iid& iid, const std::string& new_nick, const std::string& requesting_resource)
 {
+  // We don’t change the nick if the presence was sent to a channel the resource is not in.
+  auto res_in_chan = this->is_resource_in_chan(ChannelKey{iid.get_local(), iid.get_server()}, requesting_resource);
+  if (!res_in_chan)
+    return;
   IrcClient* irc = this->get_irc_client(iid.get_server());
   irc->send_nick_command(new_nick);
 }
diff --git a/src/bridge/bridge.hpp b/src/bridge/bridge.hpp
index 8f2dcef..e92747d 100644
--- a/src/bridge/bridge.hpp
+++ b/src/bridge/bridge.hpp
@@ -80,7 +80,7 @@ public:
   void send_private_message(const Iid& iid, const std::string& body, const std::string& type="PRIVMSG");
   void send_raw_message(const std::string& hostname, const std::string& body);
   void leave_irc_channel(Iid&& iid, const std::string& status_message, const std::string& resource);
-  void send_irc_nick_change(const Iid& iid, const std::string& new_nick);
+  void send_irc_nick_change(const Iid& iid, const std::string& new_nick, const std::string& requesting_resource);
   void send_irc_kick(const Iid& iid, const std::string& target, const std::string& reason,
                      const std::string& iq_id, const std::string& to_jid);
   void set_channel_topic(const Iid& iid, const std::string& subject);
diff --git a/src/xmpp/biboumi_component.cpp b/src/xmpp/biboumi_component.cpp
index 262596c..d646656 100644
--- a/src/xmpp/biboumi_component.cpp
+++ b/src/xmpp/biboumi_component.cpp
@@ -149,7 +149,7 @@ void BiboumiComponent::handle_presence(const Stanza& stanza)
         {
           const std::string own_nick = bridge->get_own_nick(iid);
           if (!own_nick.empty() && own_nick != to.resource)
-            bridge->send_irc_nick_change(iid, to.resource);
+            bridge->send_irc_nick_change(iid, to.resource, from.resource);
           const XmlNode* x = stanza.get_child("x", MUC_NS);
           const XmlNode* password = x ? x->get_child("password", MUC_NS): nullptr;
           bridge->join_irc_channel(iid, to.resource, password ? password->get_inner(): "",
-- 
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