Implement part and join, both ways

3 files changed, 42 insertions, 2 deletions

diff --git a/src/xmpp/xmpp_component.cpp b/src/xmpp/xmpp_component.cpp
index cd9cd6f..83091ba 100644
--- a/src/xmpp/xmpp_component.cpp
+++ b/src/xmpp/xmpp_component.cpp
@@ -149,8 +149,22 @@ void XmppComponent::handle_presence(const Stanza& stanza)
   Bridge* bridge = this->get_user_bridge(stanza["from"]);
   Jid to(stanza["to"]);
   Iid iid(to.local);
-  if (!iid.chan.empty() && !iid.server.empty())
-    bridge->join_irc_channel(iid, to.resource);
+  std::string type;
+  try {
+    type = stanza["type"];
+  }
+  catch (const AttributeNotFound&) {}
+
+  if (!iid.chan.empty() && !iid.chan.empty())
+    { // presence toward a MUC that corresponds to an irc channel
+      if (type.empty())
+        bridge->join_irc_channel(iid, to.resource);
+      else if (type == "unavailable")
+        {
+          XmlNode* status = stanza.get_child("status");
+          bridge->leave_irc_channel(std::move(iid), status ? std::move(status->get_inner()) : "");
+        }
+    }
 }
 
 void XmppComponent::handle_message(const Stanza& stanza)
@@ -269,3 +283,23 @@ void XmppComponent::send_muc_message(const std::string& muc_name, const std::str
   message.close();
   this->send_stanza(message);
 }
+
+void XmppComponent::send_muc_leave(std::string&& muc_name, std::string&& nick, std::string&& message, const std::string& jid_to, const bool self)
+{
+  Stanza presence("presence");
+  presence["to"] = jid_to;
+  presence["from"] = muc_name + "@" + this->served_hostname + "/" + nick;
+  presence["type"] = "unavailable";
+  if (!message.empty() || self)
+    {
+      XmlNode status("status");
+      if (!message.empty())
+        status.set_inner(std::move(message));
+      if (self)
+        status["code"] = "110";
+      status.close();
+      presence.add_child(std::move(status));
+    }
+  presence.close();
+  this->send_stanza(presence);
+}
diff --git a/src/xmpp/xmpp_component.hpp b/src/xmpp/xmpp_component.hpp
index 73eadd2..a5127a9 100644
--- a/src/xmpp/xmpp_component.hpp
+++ b/src/xmpp/xmpp_component.hpp
@@ -76,6 +76,10 @@ public:
    */
   void send_muc_message(const std::string& muc_name, const std::string& nick, const std::string body_str, const std::string& jid_to);
   /**
+   * Send an unavailable presence for this nick
+   */
+  void send_muc_leave(std::string&& muc_name, std::string&& nick, std::string&& message, const std::string& jid_to, const bool self);
+  /**
    * Handle the various stanza types
    */
   void handle_handshake(const Stanza& stanza);
diff --git a/src/xmpp/xmpp_stanza.cpp b/src/xmpp/xmpp_stanza.cpp
index d856836..ab26304 100644
--- a/src/xmpp/xmpp_stanza.cpp
+++ b/src/xmpp/xmpp_stanza.cpp
@@ -1,5 +1,7 @@
 #include <xmpp/xmpp_stanza.hpp>
 
+#include <utils/encoding.hpp>
+
 #include <iostream>
 
 std::string xml_escape(const std::string& data)