view mod_flash_policy/mod_flash_policy.lua @ 5354:39d59d857bfb

mod_http_oauth2: Use new mod_cron API for periodic cleanup Less frequent but this isn't that important after all since, as the comment states, expired codes are not usable anyway. They're also not that large so memory usage probably doesn't matter.
author Kim Alvefur <zash@zash.se>
date Sat, 22 Apr 2023 11:59:52 +0200
parents 7dbde05b48a9
children
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local filters = require "util.filters";
local config = {}
config.file = module:get_option_string("crossdomain_file", "");
config.string = module:get_option_string("crossdomain_string", [[<?xml version="1.0"?><!DOCTYPE cross-domain-policy SYSTEM "/xml/dtds/cross-domain-policy.dtd"><cross-domain-policy><site-control permitted-cross-domain-policies="master-only"/><allow-access-from domain="*" /></cross-domain-policy>]]);
local string = ''
if not config.file ~= '' then
	local f = assert(io.open(config.file));
	string = f:read("*all");
else
	string = config.string
end

module:log("debug", "crossdomain string: "..string);

module:set_global();

function filter_policy(data, session)
	-- Since we only want to check the first block of data, remove the filter
	filters.remove_filter(session, "bytes/in", filter_policy);
	if data == "<policy-file-request/>\0" then
		session.send(string.."\0");
		return nil; -- Drop data to prevent it reaching the XMPP parser
	else
		return data; -- Pass data through, it wasn't a policy request
	end

end

function filter_session(session)
	if session.type == "c2s_unauthed" then
		filters.add_filter(session, "bytes/in", filter_policy, -1);
	end
end

function module.load()
	filters.add_filter_hook(filter_session);
end

function module.unload()
	filters.remove_filter_hook(filter_session);
end