view mod_addressing/mod_addressing.lua @ 4730:1da4b815d2fe

mod_cloud_notify: Identify (and immediately push) urgent stanzas, e.g. calls This covers the following things: - A session that appears online, but has a broken TCP connection - Clients such as Siskin and Snikket iOS that require a push for calls to work It allows the stanza to be pushed immediately instead of waiting for the session to hibernate or an ack to timeout. It shouldn't break any existing cases.
author Matthew Wild <mwild1@gmail.com>
date Wed, 27 Oct 2021 19:12:03 +0100
parents f66a08f208ad
children
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-- TODO Querying other servers for support, needs to keep track of remote
-- server disco features

local xmlns_address = 'http://jabber.org/protocol/address';

local function handle_extended_addressing(data)
	local stanza = data.stanza;
	if stanza.attr.type == "error" then
		return -- so we don't process bounces
	end
	local orig_to = stanza.attr.to;
	local addresses = stanza:get_child("addresses", xmlns_address);
	if addresses then
		module:log("debug", "Extended addressing found");
		local destinations = {};
		addresses:maptags(function(address)
			if address.attr.xmlns == xmlns_address and address.name == "address" then
				local type, jid, delivered = address.attr.type, address.attr.jid, address.attr.delivered;
				if (type == "cc" or type == "bcc" or type == "to")
					and jid and not delivered then
					destinations[#destinations+1] = jid;
					module:log("debug", "%s to %s", type, jid)
					if type == "to" or type == "cc" then
						address.attr.delivered = "true";
						return address;
					elseif type == "bcc" then
						return nil;
					end
				end
			end
			return address; -- unsupported stuff goes right back
		end);
		for i=1,#destinations do
			stanza.attr.to = destinations[i];
			module:log("debug", "posting stanza to %s", destinations[i])
			module:send(stanza);
		end
		stanza.attr.to = orig_to;
		return stanza.attr.to == module.host or nil;
	end
end

module:hook("message/host", handle_extended_addressing, 10);
module:hook("message/bare", handle_extended_addressing, 10);
module:hook("message/full", handle_extended_addressing, 10);

module:hook("presence/host", handle_extended_addressing, 10);
module:hook("presence/bare", handle_extended_addressing, 10);
module:hook("presence/full", handle_extended_addressing, 10);

-- IQ stanzas makes no sense

module:add_feature(xmlns_address);