From 407f95a108c275db5e9b07398f553ab573cd46bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Thu, 20 Jul 2017 21:29:33 +0200
Subject: Do not reply with an error when receiving a presence for a user JID

fix #3224
---
 src/xmpp/biboumi_component.cpp |  7 ++-----
 src/xmpp/xmpp_component.cpp    | 30 ------------------------------
 src/xmpp/xmpp_component.hpp    |  6 ------
 tests/end_to_end/__main__.py   | 16 ----------------
 4 files changed, 2 insertions(+), 57 deletions(-)

diff --git a/src/xmpp/biboumi_component.cpp b/src/xmpp/biboumi_component.cpp
index d1c75d0..13fabd7 100644
--- a/src/xmpp/biboumi_component.cpp
+++ b/src/xmpp/biboumi_component.cpp
@@ -210,11 +210,8 @@ void BiboumiComponent::handle_presence(const Stanza& stanza)
             this->send_presence_to_contact(to_str, from.bare(), "");
         }
     }
-  else
-    {
-      // A user wants to join an invalid IRC channel, return a presence error to him/her
-      if (type.empty())
-        this->send_invalid_room_error(to.local, to.resource, from_str);
+  else if (iid.type == Iid::Type::User)
+    { // Do nothing yet
     }
   }
   catch (const IRCNotConnected& ex)
diff --git a/src/xmpp/xmpp_component.cpp b/src/xmpp/xmpp_component.cpp
index 9c3ba90..42a5392 100644
--- a/src/xmpp/xmpp_component.cpp
+++ b/src/xmpp/xmpp_component.cpp
@@ -261,7 +261,6 @@ void XmppComponent::handle_error(const Stanza& stanza)
   if (!this->ever_auth)
     sd_notifyf(0, "STATUS=Failed to authenticate to the XMPP server: %s", error_message.data());
 #endif
-
 }
 
 void* XmppComponent::get_receive_buffer(const size_t size) const
@@ -338,35 +337,6 @@ void XmppComponent::send_user_join(const std::string& from,
   this->send_stanza(presence);
 }
 
-void XmppComponent::send_invalid_room_error(const std::string& muc_name,
-                                            const std::string& nick,
-                                            const std::string& to)
-{
-  Stanza presence("presence");
-  {
-    if (!muc_name.empty ())
-      presence["from"] = muc_name + "@" + this->served_hostname + "/" + nick;
-    else
-      presence["from"] = this->served_hostname;
-    presence["to"] = to;
-    presence["type"] = "error";
-    XmlSubNode x(presence, "x");
-    x["xmlns"] = MUC_NS;
-    XmlSubNode error(presence, "error");
-    error["by"] = muc_name + "@" + this->served_hostname;
-    error["type"] = "cancel";
-    XmlSubNode item_not_found(error, "item-not-found");
-    item_not_found["xmlns"] = STANZA_NS;
-    XmlSubNode text(error, "text");
-    text["xmlns"] = STANZA_NS;
-    text["xml:lang"] = "en";
-    text.set_inner(muc_name +
-                   " is not a valid IRC channel name. A correct room jid is of the form: #<chan>%<server>@" +
-                   this->served_hostname);
-  }
-  this->send_stanza(presence);
-}
-
 void XmppComponent::send_topic(const std::string& from, Xmpp::body&& topic, const std::string& to, const std::string& who)
 {
   Stanza message("message");
diff --git a/src/xmpp/xmpp_component.hpp b/src/xmpp/xmpp_component.hpp
index f4a7655..22d5c48 100644
--- a/src/xmpp/xmpp_component.hpp
+++ b/src/xmpp/xmpp_component.hpp
@@ -123,12 +123,6 @@ public:
                       const std::string& role,
                       const std::string& to,
                       const bool self);
-  /**
-   * Send an error to indicate that the user tried to join an invalid room
-   */
-  void send_invalid_room_error(const std::string& muc_jid,
-                               const std::string& nick,
-                               const std::string& to);
   /**
    * Send the MUC topic to the user
    */
diff --git a/tests/end_to_end/__main__.py b/tests/end_to_end/__main__.py
index 2eb7f6c..ce9add6 100644
--- a/tests/end_to_end/__main__.py
+++ b/tests/end_to_end/__main__.py
@@ -2696,22 +2696,6 @@ if __name__ == '__main__':
                      partial(send_stanza, "<iq type='set' id='command2' from='{jid_one}/{resource_one}' to='{biboumi_host}'><command xmlns='http://jabber.org/protocol/commands' node='get-irc-connection-info' action='execute' /></iq>"),
                      partial(expect_stanza, r"/iq/commands:command/commands:note[re:test(text(), 'Connected to IRC server irc.localhost on port 6667 since \d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d \(\d+ seconds ago\)\.\n#foo from 1 resource: {resource_one}.*')]"),
                  ], conf='fixed_server'),
-        Scenario("invalid_room_jid",
-                 [
-                     handshake_sequence(),
-                     partial(send_stanza, "<presence from='{jid_one}/{resource_one}' to='invalid%{irc_server_one}/{nick_one}' />"),
-                     partial(expect_stanza, ("/presence[@type='error'][@to='{jid_one}/{resource_one}'][@from='invalid%{irc_server_one}/{nick_one}']/error[@type='cancel']/stanza:item-not-found",
-                                             "/presence/muc:x",
-                                             "/presence/error/stanza:text")),
-                 ]),
-        Scenario("invalid_room_jid_fixed",
-                 [
-                     handshake_sequence(),
-                     partial(send_stanza, "<presence from='{jid_one}/{resource_one}' to='invalid@{biboumi_host}/{nick_one}' />"),
-                     partial(expect_stanza, ("/presence[@type='error'][@to='{jid_one}/{resource_one}'][@from='invalid@{biboumi_host}/{nick_one}']/error[@type='cancel']/stanza:item-not-found",
-                                             "/presence/muc:x",
-                                             "/presence/error/stanza:text")),
-                 ], conf='fixed_server'),
         Scenario("irc_server_presence_subscription",
                   [
                       handshake_sequence(),
-- 
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