File

util/session.lua @ 13126:d043834f15d2

mod_http: Use RFC 7239 Forwarded header to find original client IP Prefer over X-Forwarded-* since it has an actual specification. Main practical difference is that Forwarded may carry more properties than only the IP address since it is a structured header. Since we parse it into an array, it is easier to do the logical thing and iterate backwards trough proxies until an untrusted one is encountered. Compare the handling of X-Forwarded-For. The 'secure' field now accounts for the full chain of proxies, which must be secure all the way to be considered secure.
author Kim Alvefur <zash@zash.se>
date Sat, 03 Jun 2023 17:10:04 +0200 (23 months ago)
parent 13007:534c055ec378
child 13165:9c13c11b199d
line wrap: on
line source
local initialize_filters = require "prosody.util.filters".initialize;
local time = require "util.time";
local logger = require "prosody.util.logger";

local function new_session(typ)
	local session = {
		type = typ .. "_unauthed";
		base_type = typ;
		since = time.now();
	};
	return session;
end

local function set_id(session)
	local id = session.base_type .. tostring(session):match("%x+$"):lower();
	session.id = id;
	return session;
end

local function set_logger(session)
	local log = logger.init(session.id);
	session.log = log;
	return session;
end

local function set_conn(session, conn)
	session.conn = conn;
	session.ip = conn:ip();
	return session;
end

local function set_send(session)
	local conn = session.conn;
	if not conn then
		function session.send(data)
			session.log("debug", "Discarding data sent to unconnected session: %s", data);
			return false;
		end
		return session;
	end
	local filter = initialize_filters(session);
	local w = conn.write;
	session.send = function (t)
		if t.name then
			t = filter("stanzas/out", t);
		end
		if t then
			t = filter("bytes/out", tostring(t));
			if t then
				local ret, err = w(conn, t);
				if not ret then
					session.log("debug", "Error writing to connection: %s", err);
					return false, err;
				end
			end
		end
		return true;
	end
	return session;
end

local function set_role(session, role)
	session.role = role;
end

return {
	new = new_session;

	set_id = set_id;
	set_logger = set_logger;
	set_conn = set_conn;
	set_send = set_send;
	set_role = set_role;
}