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-rw-r--r--plugins/mod_disco.lua66
1 files changed, 38 insertions, 28 deletions
diff --git a/plugins/mod_disco.lua b/plugins/mod_disco.lua
index f403ccb2..cf6030f7 100644
--- a/plugins/mod_disco.lua
+++ b/plugins/mod_disco.lua
@@ -36,31 +36,59 @@ module:add_identity("server", "im", "Prosody"); -- FIXME should be in the non-ex
module:add_feature("http://jabber.org/protocol/disco#info");
module:add_feature("http://jabber.org/protocol/disco#items");
--- Handle disco requests to the server
-
-local function build_server_disco_info(stanza)
+-- Generate and cache disco result and caps hash
+local _cached_server_disco_info, _cached_server_caps_feature, _cached_server_caps_hash;
+local function build_server_disco_info()
+ local query = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info" });
local done = {};
for _,identity in ipairs(module:get_host_items("identity")) do
local identity_s = identity.category.."\0"..identity.type;
if not done[identity_s] then
- stanza:tag("identity", identity):up();
+ query:tag("identity", identity):up();
done[identity_s] = true;
end
end
for _,feature in ipairs(module:get_host_items("feature")) do
if not done[feature] then
- stanza:tag("feature", {var=feature}):up();
+ query:tag("feature", {var=feature}):up();
done[feature] = true;
end
end
+ _cached_server_disco_info = query;
+ _cached_server_caps_hash = calculate_hash(query);
+ _cached_server_caps_feature = st.stanza("c", {
+ xmlns = "http://jabber.org/protocol/caps";
+ hash = "sha-1";
+ node = "http://prosody.im";
+ ver = _cached_server_caps_hash;
+ });
end
+local function clear_disco_cache()
+ _cached_server_disco_info, _cached_server_caps_feature, _cached_server_caps_hash = nil, nil, nil;
+end
+local function get_server_disco_info()
+ if not _cached_server_disco_info then build_server_disco_info(); end
+ return _cached_server_disco_info;
+end
+local function get_server_caps_feature()
+ if not _cached_server_caps_feature then build_server_disco_info(); end
+ return _cached_server_caps_feature;
+end
+local function get_server_caps_hash()
+ if not _cached_server_caps_hash then build_server_disco_info(); end
+ return _cached_server_caps_hash;
+end
+
+module:hook("item-added/identity", clear_disco_cache);
+module:hook("item-added/feature", clear_disco_cache);
+
+-- Handle disco requests to the server
module:hook("iq/host/http://jabber.org/protocol/disco#info:query", function(event)
local origin, stanza = event.origin, event.stanza;
if stanza.attr.type ~= "get" then return; end
local node = stanza.tags[1].attr.node;
- if node and node ~= "" then return; end -- TODO fire event?
- local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#info");
- build_server_disco_info(reply);
+ if node and node ~= "" and node ~= get_server_caps_hash() then return; end -- TODO fire event?
+ local reply = st.reply(stanza):add_child(get_server_disco_info());
origin.send(reply);
return true;
end);
@@ -81,27 +109,9 @@ module:hook("iq/host/http://jabber.org/protocol/disco#items:query", function(eve
return true;
end);
--- Server caps hash calculation
-local caps_hash_feature;
-
-local function recalculate_server_caps()
- local caps_hash = calculate_hash(st.stanza());
- caps_hash_feature = st.stanza("c", {
- xmlns = "http://jabber.org/protocol/caps";
- hash = "sha-1";
- node = "http://prosody.im";
- ver = caps_hash;
- });
-end
-recalculate_server_caps();
-
-module:hook("item-added/identity", recalculate_server_caps);
-module:hook("item-added/feature", recalculate_server_caps);
-
+-- Handle caps stream feature
module:hook("stream-features", function (event)
- if caps_hash_feature then
- event.features:add_child(caps_hash_feature);
- end
+ event.features:add_child(get_server_caps_feature());
end);
-- Handle disco requests to user accounts