prosody
a5d5fefb8b68
spec/mod_bosh_spec.lua

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spec/mod_bosh_spec.lua @ 13801:a5d5fefb8b68 13.0

mod_tls: Enable Prosody's certificate checking for incoming s2s connections (fixes #1916) (thanks Damian, Zash) Various options in Prosody allow control over the behaviour of the certificate verification process For example, some deployments choose to allow falling back to traditional "dialback" authentication (XEP-0220), while others verify via DANE, hard-coded fingerprints, or other custom plugins. Implementing this flexibility requires us to override OpenSSL's default certificate verification, to allow Prosody to verify the certificate itself, apply custom policies and make decisions based on the outcome. To enable our custom logic, we have to suppress OpenSSL's default behaviour of aborting the connection with a TLS alert message. With LuaSec, this can be achieved by using the verifyext "lsec_continue" flag. We also need to use the lsec_ignore_purpose flag, because XMPP s2s uses server certificates as "client" certificates (for mutual TLS verification in outgoing s2s connections). Commit 99d2100d2918 moved these settings out of the defaults and into mod_s2s, because we only really need these changes for s2s, and they should be opt-in, rather than automatically applied to all TLS services we offer. That commit was incomplete, because it only added the flags for incoming direct TLS connections. StartTLS connections are handled by mod_tls, which was not applying the lsec_* flags. It previously worked because they were already in the defaults. This resulted in incoming s2s connections with "invalid" certificates being aborted early by OpenSSL, even if settings such as `s2s_secure_auth = false` or DANE were present in the config. Outgoing s2s connections inherit verify "none" from the defaults, which means OpenSSL will receive the cert but will not terminate the connection when it is deemed invalid. This means we don't need lsec_continue there, and we also don't need lsec_ignore_purpose (because the remote peer is a "server"). Wondering why we can't just use verify "none" for incoming s2s? It's because in that mode, OpenSSL won't request a certificate from the peer for incoming connections. Setting verify "peer" is how you ask OpenSSL to request a certificate from the client, but also what triggers its built-in verification.
author Matthew Wild <mwild1@gmail.com>
date Tue, 01 Apr 2025 17:26:56 +0100
parent 9374:a1a39d395260
line wrap: on
line source


-- Requires a host 'localhost' with SASL ANONYMOUS

local bosh_url = "http://localhost:5280/http-bind"

local logger = require "util.logger";

local debug = false;

local print = print;
if debug then
	logger.add_simple_sink(print, {
		--"debug";
		"info";
		"warn";
		"error";
	});
else
	print = function () end
end

describe("#mod_bosh", function ()
	local server = require "net.server_select";
	package.loaded["net.server"] = server;
	local async = require "util.async";
	local timer = require "util.timer";
	local http = require "net.http".new({ suppress_errors = false });

	local function sleep(n)
		local wait, done = async.waiter();
		timer.add_task(n, function () done() end);
		wait();
	end

	local st = require "util.stanza";
	local xml = require "util.xml";

	local function request(url, opt, cb, auto_wait)
		local wait, done = async.waiter();
		local ok, err;
		http:request(url, opt, function (...)
			ok, err = pcall(cb, ...);
			if not ok then print("CAUGHT", err) end
			done();
		end);
		local function err_wait(throw)
			wait();
			if throw ~= false and not ok then
				error(err);
			end
			return ok, err;
		end
		if auto_wait == false then
			return err_wait;
		else
			err_wait();
		end
	end

	local function run_async(f)
		local err;
		local r = async.runner();
		r:onerror(function (_, err_)
			print("EER", err_)
			err = err_;
			server.setquitting("once");
		end)
		:onwaiting(function ()
			--server.loop();
		end)
		:run(function ()
			f()
			server.setquitting("once");
		end);
		server.loop();
		if err then
			error(err);
		end
		if r.state ~= "ready" then
			error("Runner in unexpected state: "..r.state);
		end
	end

	it("test endpoint should be reachable", function ()
		-- This is partly just to ensure the other tests have a chance to succeed
		-- (i.e. the BOSH endpoint is up and functioning)
		local function test()
			request(bosh_url, nil, function (resp, code)
				if code ~= 200 then
					error("Unable to reach BOSH endpoint "..bosh_url);
				end
				assert.is_string(resp);
			end);
		end
		run_async(test);
	end);

	it("should respond to past rids with past responses", function ()
		local resp_1000_1, resp_1000_2 = "1", "2";

		local function test_bosh()
			local sid;

		-- Set up BOSH session
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					to = "localhost";
					from = "test@localhost";
					content = "text/xml; charset=utf-8";
					hold = "1";
					rid = "998";
					wait = "10";
					["xml:lang"] = "en";
					["xmpp:version"] = "1.0";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				})
				:tag("auth", { xmlns = "urn:ietf:params:xml:ns:xmpp-sasl", mechanism = "ANONYMOUS" }):up()
				:tag("iq", { xmlns = "jabber:client", type = "set", id = "bind1" })
					:tag("bind", { xmlns = "urn:ietf:params:xml:ns:xmpp-bind" })
						:tag("resource"):text("bosh-test1"):up()
					:up()
				:up()
				);
			}, function (response_body)
				local resp = xml.parse(response_body);
				if not response_body:find("<jid>", 1, true) then
					print("ERR", resp:pretty_print());
					error("Failed to set up BOSH session");
				end
				sid = assert(resp.attr.sid);
				print("SID", sid);
			end);

		-- Receive some additional post-login stuff
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "999";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				})
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 999", resp:pretty_print());
			end);

		-- Send first long poll
			print "SEND 1000#1"
			local wait1000 = request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "1000";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}))
			}, function (response_body)
				local resp = xml.parse(response_body);
				resp_1000_1 = resp;
				print("RESP 1000#1", resp:pretty_print());
			end, false);

		-- Wait a couple of seconds
			sleep(2)

		-- Send an early request, causing rid 1000 to return early
			print "SEND 1001"
			local wait1001 = request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "1001";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}))
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 1001", resp:pretty_print());
			end, false);
		-- Ensure we've received the response for rid 1000
			wait1000();

		-- Sleep a couple of seconds
			print "...pause..."
			sleep(2);

		-- Re-send rid 1000, we should get the same response
			print "SEND 1000#2"
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "1000";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}))
			}, function (response_body)
				local resp = xml.parse(response_body);
				resp_1000_2 = resp;
				print("RESP 1000#2", resp:pretty_print());
			end);

			local wait_final = request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "1002";
					type = "terminate";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}))
			}, function ()
			end, false);

			print "WAIT 1001"
			wait1001();
			wait_final();
			print "DONE ALL"
		end
		run_async(test_bosh);
		assert.truthy(resp_1000_1);
		assert.same(resp_1000_1, resp_1000_2);
	end);

	it("should handle out-of-order requests", function ()
		local function test()
			local sid;
		-- Set up BOSH session
			local wait, done = async.waiter();
			http:request(bosh_url, {
				body = tostring(st.stanza("body", {
					to = "localhost";
					from = "test@localhost";
					content = "text/xml; charset=utf-8";
					hold = "1";
					rid = "1";
					wait = "10";
					["xml:lang"] = "en";
					["xmpp:version"] = "1.0";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}));
			}, function (response_body)
				local resp = xml.parse(response_body);
				sid = assert(resp.attr.sid, "Failed to set up BOSH session");
				print("SID", sid);
				done();
			end);
			print "WAIT 1"
			wait();
			print "DONE 1"

			local rid2_response_received = false;

		-- Temporarily skip rid 2, to simulate missed request
			local wait3, done3 = async.waiter();
			http:request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "3";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}):tag("iq", { xmlns = "jabber:client", type = "set", id = "bind" })
					:tag("bind", { xmlns = "urn:ietf:params:xml:ns:xmpp-bind" }):up()
				:up()
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 3", resp:pretty_print());
				done3();
				-- The server should not respond to this request until
				-- it has responded to rid 2
				assert.is_true(rid2_response_received);
			end);

			print "SLEEPING"
			sleep(2);
			print "SLEPT"

		-- Send the "missed" rid 2
			local wait2, done2 = async.waiter();
			http:request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "2";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}):tag("auth", { xmlns = "urn:ietf:params:xml:ns:xmpp-sasl", mechanism = "ANONYMOUS" }):up()
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 2", resp:pretty_print());
				rid2_response_received = true;
				done2();
			end);
			print "WAIT 2"
			wait2();
			print "WAIT 3"
			wait3();
			print "QUIT"
		end
		run_async(test);
	end);

	it("should work", function ()
		local function test()
			local sid;
		-- Set up BOSH session
			local wait, done = async.waiter();
			http:request(bosh_url, {
				body = tostring(st.stanza("body", {
					to = "localhost";
					from = "test@localhost";
					content = "text/xml; charset=utf-8";
					hold = "1";
					rid = "1";
					wait = "10";
					["xml:lang"] = "en";
					["xmpp:version"] = "1.0";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}));
			}, function (response_body)
				local resp = xml.parse(response_body);
				sid = assert(resp.attr.sid, "Failed to set up BOSH session");
				print("SID", sid);
				done();
			end);
			print "WAIT 1"
			wait();
			print "DONE 1"

			local rid2_response_received = false;

		-- Send the "missed" rid 2
			local wait2, done2 = async.waiter();
			http:request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "2";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}):tag("auth", { xmlns = "urn:ietf:params:xml:ns:xmpp-sasl", mechanism = "ANONYMOUS" }):up()
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 2", resp:pretty_print());
				rid2_response_received = true;
				done2();
			end);

			local wait3, done3 = async.waiter();
			http:request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "3";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}):tag("iq", { xmlns = "jabber:client", type = "set", id = "bind" })
					:tag("bind", { xmlns = "urn:ietf:params:xml:ns:xmpp-bind" }):up()
				:up()
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 3", resp:pretty_print());
				done3();
				-- The server should not respond to this request until
				-- it has responded to rid 2
				assert.is_true(rid2_response_received);
			end);

			print "SLEEPING"
			sleep(2);
			print "SLEPT"

			print "WAIT 2"
			wait2();
			print "WAIT 3"
			wait3();
			print "QUIT"
		end
		run_async(test);
	end);

	it("should handle aborted pending requests", function ()
		local resp_1000_1, resp_1000_2 = "1", "2";

		local function test_bosh()
			local sid;

		-- Set up BOSH session
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					to = "localhost";
					from = "test@localhost";
					content = "text/xml; charset=utf-8";
					hold = "1";
					rid = "998";
					wait = "10";
					["xml:lang"] = "en";
					["xmpp:version"] = "1.0";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				})
				:tag("auth", { xmlns = "urn:ietf:params:xml:ns:xmpp-sasl", mechanism = "ANONYMOUS" }):up()
				:tag("iq", { xmlns = "jabber:client", type = "set", id = "bind1" })
					:tag("bind", { xmlns = "urn:ietf:params:xml:ns:xmpp-bind" })
						:tag("resource"):text("bosh-test1"):up()
					:up()
				:up()
				);
			}, function (response_body)
				local resp = xml.parse(response_body);
				if not response_body:find("<jid>", 1, true) then
					print("ERR", resp:pretty_print());
					error("Failed to set up BOSH session");
				end
				sid = assert(resp.attr.sid);
				print("SID", sid);
			end);

		-- Receive some additional post-login stuff
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "999";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				})
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 999", resp:pretty_print());
			end);

		-- Send first long poll
			print "SEND 1000#1"
			local wait1000_1 = request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "1000";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}))
			}, function (response_body)
				local resp = xml.parse(response_body);
				resp_1000_1 = resp;
				assert.is_nil(resp.attr.type);
				print("RESP 1000#1", resp:pretty_print());
			end, false);

		-- Wait a couple of seconds
			sleep(2)

		-- Re-send rid 1000, we should eventually get a normal response (with no stanzas)
			print "SEND 1000#2"
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "1000";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}))
			}, function (response_body)
				local resp = xml.parse(response_body);
				resp_1000_2 = resp;
				assert.is_nil(resp.attr.type);
				print("RESP 1000#2", resp:pretty_print());
			end);

			wait1000_1();
			print "DONE ALL"
		end
		run_async(test_bosh);
		assert.truthy(resp_1000_1);
		assert.same(resp_1000_1, resp_1000_2);
	end);

	it("should fail on requests beyond rid window", function ()
		local function test_bosh()
			local sid;

		-- Set up BOSH session
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					to = "localhost";
					from = "test@localhost";
					content = "text/xml; charset=utf-8";
					hold = "1";
					rid = "998";
					wait = "10";
					["xml:lang"] = "en";
					["xmpp:version"] = "1.0";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				})
				:tag("auth", { xmlns = "urn:ietf:params:xml:ns:xmpp-sasl", mechanism = "ANONYMOUS" }):up()
				:tag("iq", { xmlns = "jabber:client", type = "set", id = "bind1" })
					:tag("bind", { xmlns = "urn:ietf:params:xml:ns:xmpp-bind" })
						:tag("resource"):text("bosh-test1"):up()
					:up()
				:up()
				);
			}, function (response_body)
				local resp = xml.parse(response_body);
				if not response_body:find("<jid>", 1, true) then
					print("ERR", resp:pretty_print());
					error("Failed to set up BOSH session");
				end
				sid = assert(resp.attr.sid);
				print("SID", sid);
			end);

		-- Receive some additional post-login stuff
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "999";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				})
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 999", resp:pretty_print());
			end);

		-- Send poll with a rid that's too high (current + 2, where only current + 1 is allowed)
			print "SEND 1002(!)"
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "1002";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}))
			}, function (response_body)
				local resp = xml.parse(response_body);
				assert.equal("terminate", resp.attr.type);
				print("RESP 1002(!)", resp:pretty_print());
			end);

			print "DONE ALL"
		end
		run_async(test_bosh);
	end);

	it("should always succeed for requests within the rid window", function ()
		local function test()
			local sid;
		-- Set up BOSH session
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					to = "localhost";
					from = "test@localhost";
					content = "text/xml; charset=utf-8";
					hold = "1";
					rid = "1";
					wait = "10";
					["xml:lang"] = "en";
					["xmpp:version"] = "1.0";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}));
			}, function (response_body)
				local resp = xml.parse(response_body);
				sid = assert(resp.attr.sid, "Failed to set up BOSH session");
				print("SID", sid);
			end);
			print "DONE 1"

			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "2";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}):tag("auth", { xmlns = "urn:ietf:params:xml:ns:xmpp-sasl", mechanism = "ANONYMOUS" }):up()
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 2", resp:pretty_print());
			end);

			local resp3;
			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "3";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}):tag("iq", { xmlns = "jabber:client", type = "set", id = "bind" })
					:tag("bind", { xmlns = "urn:ietf:params:xml:ns:xmpp-bind" }):up()
				:up()
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 3#1", resp:pretty_print());
				resp3 = resp;
			end);


			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "4";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}):tag("iq", { xmlns = "jabber:client", type = "get", id = "ping1" })
					:tag("ping", { xmlns = "urn:xmpp:ping" }):up()
				:up()
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 4", resp:pretty_print());
			end);

			request(bosh_url, {
				body = tostring(st.stanza("body", {
					sid = sid;
					rid = "3";
					content = "text/xml; charset=utf-8";
					["xml:lang"] = "en";
					xmlns = "http://jabber.org/protocol/httpbind";
					["xmlns:xmpp"] = "urn:xmpp:xbosh";
				}):tag("iq", { xmlns = "jabber:client", type = "set", id = "bind" })
					:tag("bind", { xmlns = "urn:ietf:params:xml:ns:xmpp-bind" }):up()
				:up()
				)
			}, function (response_body)
				local resp = xml.parse(response_body);
				print("RESP 3#2", resp:pretty_print());
				assert.not_equal("terminate", resp.attr.type);
				assert.same(resp3, resp);
			end);


			print "QUIT"
		end
		run_async(test);
	end);
end);