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Don't allow double compression.

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This commit is contained in:
Tobias Markmann 2009-08-18 22:00:37 +02:00
parent f74df67a5d
commit 20d9c7ea6d
1 changed files with 9 additions and 2 deletions
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11
plugins/mod_compression.lua
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@ -37,6 +37,13 @@ module:add_event_hook("stream-features",
-- TODO Support compression on S2S level too.
module:add_handler({"c2s_unauthed", "c2s_authed"}, "compress", xmlns_compression_protocol,
function(session, stanza)
-- fail if we are already compressed
if session.compressed then
local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("unsupported-method");
session.send(error_st);
session:log("warn", "Tried to establish another compression layer.");
end
-- checking if the compression method is supported
local method = stanza:child_with_name("method")[1];
if method == "zlib" then
@ -74,7 +81,7 @@ module:add_handler({"c2s_unauthed", "c2s_authed"}, "compress", xmlns_compression
text = compressed;
extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
});
module:log("error", compressed);
module:log("warn", compressed);
return;
end
old_send(compressed);
@ -91,7 +98,7 @@ module:add_handler({"c2s_unauthed", "c2s_authed"}, "compress", xmlns_compression
text = decompressed;
extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
});
module:log("error", decompressed);
module:log("warn", decompressed);
return;
end
old_data(conn, decompressed);