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-rw-r--r--plugins/mod_c2s.lua11
1 files changed, 9 insertions, 2 deletions
diff --git a/plugins/mod_c2s.lua b/plugins/mod_c2s.lua
index b634b843..3816a262 100644
--- a/plugins/mod_c2s.lua
+++ b/plugins/mod_c2s.lua
@@ -56,12 +56,19 @@ local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
function stream_callbacks.streamopened(session, attr)
local send = session.send;
- session.host = nameprep(attr.to);
- if not session.host then
+ local host = nameprep(attr.to);
+ if not host then
session:close{ condition = "improper-addressing",
text = "A valid 'to' attribute is required on stream headers" };
return;
end
+ if not session.host then
+ session.host = host;
+ elseif session.host ~= host then
+ session:close{ condition = "not-authorized",
+ text = "The 'to' attribute must remain the same across stream restarts" };
+ return;
+ end
session.version = tonumber(attr.version) or 0;
session.streamid = uuid_generate();
(session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host);