From f068e80993a53e7ae194c364c2a52b1b6b76ed17 Mon Sep 17 00:00:00 2001
From: Matthew Wild <mwild1@gmail.com>
Date: Fri, 22 Mar 2013 14:18:23 +0000
Subject: s2smanager, mod_s2s, mod_dialback, mod_saslauth: Move
 s2smanager.make_authenticated() to mod_s2s, and plugins now signal
 authentication via the s2s-authenticated event

---
 plugins/mod_s2s/mod_s2s.lua | 76 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 74 insertions(+), 2 deletions(-)

(limited to 'plugins/mod_s2s')

diff --git a/plugins/mod_s2s/mod_s2s.lua b/plugins/mod_s2s/mod_s2s.lua
index 8d99b855..fb54188a 100644
--- a/plugins/mod_s2s/mod_s2s.lua
+++ b/plugins/mod_s2s/mod_s2s.lua
@@ -24,15 +24,17 @@ local new_xmpp_stream = require "util.xmppstream".new;
 local s2s_new_incoming = require "core.s2smanager".new_incoming;
 local s2s_new_outgoing = require "core.s2smanager".new_outgoing;
 local s2s_destroy_session = require "core.s2smanager".destroy_session;
-local s2s_mark_connected = require "core.s2smanager".mark_connected;
 local uuid_gen = require "util.uuid".generate;
 local cert_verify_identity = require "util.x509".verify_identity;
+local fire_global_event = prosody.events.fire_event;
 
 local s2sout = module:require("s2sout");
 
 local connect_timeout = module:get_option_number("s2s_timeout", 90);
 local stream_close_timeout = module:get_option_number("s2s_close_timeout", 5);
 
+local require_encryption = module:get_option_boolean("s2s_require_encryption", secure_auth);
+
 local sessions = module:shared("sessions");
 
 local log = module._log;
@@ -132,6 +134,76 @@ function module.add_host(module)
 	end
 	module:hook("route/remote", route_to_existing_session, 200);
 	module:hook("route/remote", route_to_new_session, 100);
+	module:hook("s2s-authenticated", make_authenticated, -1);
+end
+
+-- Stream is authorised, and ready for normal stanzas
+function mark_connected(session)
+	local sendq, send = session.sendq, session.sends2s;
+	
+	local from, to = session.from_host, session.to_host;
+	
+	session.log("info", "%s s2s connection %s->%s complete", session.direction, from, to);
+
+	local event_data = { session = session };
+	if session.type == "s2sout" then
+		fire_global_event("s2sout-established", event_data);
+		hosts[from].events.fire_event("s2sout-established", event_data);
+	else
+		local host_session = hosts[to];
+		session.send = function(stanza)
+			return host_session.events.fire_event("route/remote", { from_host = to, to_host = from, stanza = stanza });
+		end;
+
+		fire_global_event("s2sin-established", event_data);
+		hosts[to].events.fire_event("s2sin-established", event_data);
+	end
+	
+	if session.direction == "outgoing" then
+		if sendq then
+			session.log("debug", "sending %d queued stanzas across new outgoing connection to %s", #sendq, session.to_host);
+			for i, data in ipairs(sendq) do
+				send(data[1]);
+				sendq[i] = nil;
+			end
+			session.sendq = nil;
+		end
+		
+		session.ip_hosts = nil;
+		session.srv_hosts = nil;
+	end
+end
+
+function make_authenticated(event)
+	local session, host = event.session, event.host;
+	if not session.secure then
+		if require_encryption or secure_auth or secure_domains[host] then
+			session:close({
+				condition = "policy-violation",
+				text = "Encrypted server-to-server communication is required but was not "
+				       ..((session.direction == "outgoing" and "offered") or "used")
+			});
+		end
+	end
+	if session.type == "s2sout_unauthed" then
+		session.type = "s2sout";
+	elseif session.type == "s2sin_unauthed" then
+		session.type = "s2sin";
+		if host then
+			if not session.hosts[host] then session.hosts[host] = {}; end
+			session.hosts[host].authed = true;
+		end
+	elseif session.type == "s2sin" and host then
+		if not session.hosts[host] then session.hosts[host] = {}; end
+		session.hosts[host].authed = true;
+	else
+		return false;
+	end
+	session.log("debug", "connection %s->%s is now authenticated for %s", session.from_host, session.to_host, host);
+	
+	mark_connected(session);
+	
+	return true;
 end
 
 --- Helper to check that a session peer's certificate is valid
@@ -287,7 +359,7 @@ function stream_callbacks.streamopened(session, attr)
 			if not session.dialback_verifying then
 				hosts[session.from_host].events.fire_event("s2sout-authenticate-legacy", { origin = session });
 			else
-				s2s_mark_connected(session);
+				mark_connected(session);
 			end
 		end
 	end
-- 
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