view mod_addressing/mod_addressing.lua @ 5186:fa3059e653fa

mod_http_oauth2: Implement the Implicit flow Everyone says this is insecure and bad, but it's also the only thing that makes sense for e.g. pure JavaScript clients, but hey implement this even more complicated thing instead!
author Kim Alvefur <zash@zash.se>
date Thu, 02 Mar 2023 22:06:50 +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);