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mod_disco: Support for putting the server's caps hash in stream:features to allow the client to cache disco#info for the server instead of requesting it at each login.

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This commit is contained in:
Matthew Wild 2010-07-09 13:20:00 +01:00
parent e1c6041450
commit 4eefb92a0a
1 changed files with 38 additions and 8 deletions
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46
plugins/mod_disco.lua
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@ -11,6 +11,7 @@ local is_contact_subscribed = require "core.rostermanager".is_contact_subscribed
local jid_split = require "util.jid".split;
local jid_bare = require "util.jid".bare;
local st = require "util.stanza"
local calculate_hash = require "util.caps".calculate_hash;
local disco_items = module:get_option("disco_items") or {};
do -- validate disco_items
@ -35,27 +36,31 @@ 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");
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?
-- Handle disco requests to the server
local reply = st.reply(stanza):query("http://jabber.org/protocol/disco#info");
local function build_server_disco_info(stanza)
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
reply:tag("identity", identity):up();
stanza: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
reply:tag("feature", {var=feature}):up();
stanza:tag("feature", {var=feature}):up();
done[feature] = true;
end
end
end
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);
origin.send(reply);
return true;
end);
@ -75,6 +80,31 @@ module:hook("iq/host/http://jabber.org/protocol/disco#items:query", function(eve
origin.send(reply);
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);
module:hook("stream-features", function (event)
if caps_hash_feature then
event.features:add_child(caps_hash_feature);
end
end);
-- Handle disco requests to user accounts
module:hook("iq/bare/http://jabber.org/protocol/disco#info:query", function(event)
local origin, stanza = event.origin, event.stanza;
if stanza.attr.type ~= "get" then return; end