X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=core%2Fstanza_router.lua;h=a2c7b3963abfba49273e12de367aebb864e28ade;hb=03406f6c1978bd832e7656573b708946264fb32d;hp=e54541196045b53b72d3b363ce5816475f6d9b7b;hpb=b1d84c5a42938fae9b711d22201dc52b98ad4cb8;p=prosody.git

diff --git a/core/stanza_router.lua b/core/stanza_router.lua
index e5454119..a2c7b396 100644
--- a/core/stanza_router.lua
+++ b/core/stanza_router.lua
@@ -1,59 +1,81 @@
--- Prosody IM v0.4
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
 -- 
 -- This project is MIT/X11 licensed. Please see the
 -- COPYING file in the source package for more information.
 --
 
-
-
 local log = require "util.logger".init("stanzarouter")
 
-local hosts = _G.hosts;
-
-local st = require "util.stanza";
-local send_s2s = require "core.s2smanager".send_to_host;
-local user_exists = require "core.usermanager".user_exists;
-
-local rostermanager = require "core.rostermanager";
-local offlinemanager = require "core.offlinemanager";
-
-local modules_handle_stanza = require "core.modulemanager".handle_stanza;
-local component_handle_stanza = require "core.componentmanager".handle_stanza;
-
+local hosts = _G.prosody.hosts;
 local tostring = tostring;
-local t_insert = table.insert;
-local pairs = pairs;
-local ipairs = ipairs;
-
+local st = require "util.stanza";
 local jid_split = require "util.jid".split;
 local jid_prepped_split = require "util.jid".prepped_split;
-local fire_event = prosody.events.fire_event;
 
-local select_best_resources;
+local full_sessions = _G.prosody.full_sessions;
+local bare_sessions = _G.prosody.bare_sessions;
 
-function core_process_stanza(origin, stanza)
-	(origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:top_tag())
+local core_post_stanza, core_process_stanza, core_route_stanza;
 
-	-- Currently we guarantee every stanza to have an xmlns, should we keep this rule?
-	if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end
-	
-	-- TODO verify validity of stanza (as well as JID validity)
-	if stanza.attr.type == "error" and #stanza.tags == 0 then return; end -- TODO invalid stanza, log
-	if stanza.name == "iq" then
-		if (stanza.attr.type == "set" or stanza.attr.type == "get") and #stanza.tags ~= 1 then
-			origin.send(st.error_reply(stanza, "modify", "bad-request"));
+function deprecated_warning(f)
+	_G[f] = function(...)
+		log("warn", "Using the global %s() is deprecated, use module:send() or prosody.%s(). %s", f, f, debug.traceback());
+		return prosody[f](...);
+	end
+end
+deprecated_warning"core_post_stanza";
+deprecated_warning"core_process_stanza";
+deprecated_warning"core_route_stanza";
+
+local valid_stanzas = { message = true, presence = true, iq = true };
+local function handle_unhandled_stanza(host, origin, stanza)
+	local name, xmlns, origin_type = stanza.name, stanza.attr.xmlns or "jabber:client", origin.type;
+	if xmlns == "jabber:client" and valid_stanzas[name] then
+		-- A normal stanza
+		local st_type = stanza.attr.type;
+		if st_type == "error" or (name == "iq" and st_type == "result") then
+			log("debug", "Discarding %s from %s of type: %s", name, origin_type, st_type or '<nil>');
 			return;
 		end
+		if name == "iq" and (st_type == "get" or st_type == "set") and stanza.tags[1] then
+			xmlns = stanza.tags[1].attr.xmlns or "jabber:client";
+		end
+		log("debug", "Unhandled %s stanza: %s; xmlns=%s", origin_type, name, xmlns);
+		if origin.send then
+			origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
+		end
+	elseif not((name == "features" or name == "error") and xmlns == "http://etherx.jabber.org/streams") then -- FIXME remove check once we handle S2S features
+		log("warn", "Unhandled %s stream element or stanza: %s; xmlns=%s: %s", origin_type, name, xmlns, tostring(stanza)); -- we didn't handle it
+		origin:close("unsupported-stanza-type");
 	end
+end
+
+local iq_types = { set=true, get=true, result=true, error=true };
+function core_process_stanza(origin, stanza)
+	(origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:top_tag())
+
+	if origin.type == "c2s" and not stanza.attr.xmlns then
+		local name, st_type = stanza.name, stanza.attr.type;
+		if st_type == "error" and #stanza.tags == 0 then
+			return handle_unhandled_stanza(origin.host, origin, stanza);
+		end
+		if name == "iq" then
+			if not stanza.attr.id then stanza.attr.id = ""; end -- COMPAT Jabiru doesn't send the id attribute on roster requests
+			if not iq_types[st_type] or ((st_type == "set" or st_type == "get") and (#stanza.tags ~= 1)) then
+				origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid IQ type or incorrect number of children"));
+				return;
+			end
+		end
 
-	if origin.type == "c2s" then
 		if not origin.full_jid
-			and not(stanza.name == "iq" and stanza.attr.type == "set" and stanza.tags[1] and stanza.tags[1].name == "bind"
+			and not(name == "iq" and st_type == "set" and stanza.tags[1] and stanza.tags[1].name == "bind"
 					and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then
 			-- authenticated client isn't bound and current stanza is not a bind request
-			origin.send(st.error_reply(stanza, "auth", "not-authorized")); -- FIXME maybe allow stanzas to account or server
+			if stanza.attr.type ~= "result" and stanza.attr.type ~= "error" then
+				origin.send(st.error_reply(stanza, "auth", "not-authorized")); -- FIXME maybe allow stanzas to account or server
+			end
 			return;
 		end
 
@@ -97,46 +119,46 @@ function core_process_stanza(origin, stanza)
 		stanza.attr.from = from;
 	end
 
-	--[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us?
-		log("warn", "stanza recieved for a non-local server");
-		return; -- FIXME what should we do here?
-	end]] -- FIXME
-
-	if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and xmlns == "jabber:client" then
+	if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and xmlns == nil then
 		if origin.type == "s2sin" and not origin.dummy then
 			local host_status = origin.hosts[from_host];
 			if not host_status or not host_status.authed then -- remote server trying to impersonate some other server?
 				log("warn", "Received a stanza claiming to be from %s, over a stream authed for %s!", from_host, origin.from_host);
-				return; -- FIXME what should we do here? does this work with subdomains?
+				origin:close("not-authorized");
+				return;
+			elseif not hosts[host] then
+				log("warn", "Remote server %s sent us a stanza for %s, closing stream", origin.from_host, host);
+				origin:close("host-unknown");
+				return;
 			end
 		end
-		core_post_stanza(origin, stanza);
+		core_post_stanza(origin, stanza, origin.full_jid);
 	else
 		local h = hosts[stanza.attr.to or origin.host or origin.to_host];
 		if h then
 			local event;
-			if stanza.attr.xmlns == "jabber:client" then
+			if xmlns == nil then
 				if stanza.name == "iq" and (stanza.attr.type == "set" or stanza.attr.type == "get") then
 					event = "stanza/iq/"..stanza.tags[1].attr.xmlns..":"..stanza.tags[1].name;
 				else
 					event = "stanza/"..stanza.name;
 				end
 			else
-				event = "stanza/"..stanza.attr.xmlns..":"..stanza.name;
+				event = "stanza/"..xmlns..":"..stanza.name;
 			end
 			if h.events.fire_event(event, {origin = origin, stanza = stanza}) then return; end
 		end
-		if host and not hosts[host] then host = nil; end -- workaround for a Pidgin bug which sets 'to' to the SRV result
-		modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
+		if host and not hosts[host] then host = nil; end -- COMPAT: workaround for a Pidgin bug which sets 'to' to the SRV result
+		handle_unhandled_stanza(host or origin.host or origin.to_host, origin, stanza);
 	end
 end
 
-function core_post_stanza(origin, stanza)
+function core_post_stanza(origin, stanza, preevents)
 	local to = stanza.attr.to;
 	local node, host, resource = jid_split(to);
 	local to_bare = node and (node.."@"..host) or host; -- bare JID
 
-	local to_type;
+	local to_type, to_self;
 	if node then
 		if resource then
 			to_type = '/full';
@@ -144,6 +166,7 @@ function core_post_stanza(origin, stanza)
 			to_type = '/bare';
 			if node == origin.username and host == origin.host then
 				stanza.attr.to = nil;
+				to_self = true;
 			end
 		end
 	else
@@ -151,181 +174,53 @@ function core_post_stanza(origin, stanza)
 			to_type = '/host';
 		else
 			to_type = '/bare';
+			to_self = true;
 		end
 	end
 
 	local event_data = {origin=origin, stanza=stanza};
-	if origin.full_jid then -- c2s connection
+	if preevents then -- c2s connection
 		if hosts[origin.host].events.fire_event('pre-'..stanza.name..to_type, event_data) then return; end -- do preprocessing
 	end
 	local h = hosts[to_bare] or hosts[host or origin.host];
 	if h then
-		if h.type == "component" then
-			component_handle_stanza(origin, stanza);
-			return;
-		else
-			if h.events.fire_event(stanza.name..to_type, event_data) then return; end -- do processing
-		end
-	end
-
-	if host and fire_event(host.."/"..stanza.name, event_data) then
-		-- event handled
-	elseif stanza.name == "presence" and origin.host and fire_event(origin.host.."/"..stanza.name, event_data) then
-		-- event handled
-	elseif not to then
-		modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
-	elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server
-		modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
-	elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
-		component_handle_stanza(origin, stanza);
-	elseif hosts[host] and hosts[host].type == "component" then -- directed at a component
-		component_handle_stanza(origin, stanza);
-	elseif hosts[host] and hosts[host].type == "local" and stanza.name == "iq" and not resource then -- directed at bare JID
-		modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
+		if h.events.fire_event(stanza.name..to_type, event_data) then return; end -- do processing
+		if to_self and h.events.fire_event(stanza.name..'/self', event_data) then return; end -- do processing
+		handle_unhandled_stanza(h.host, origin, stanza);
 	else
 		core_route_stanza(origin, stanza);
 	end
 end
 
 function core_route_stanza(origin, stanza)
-	-- Hooks
-	--- ...later
-
-	-- Deliver
-	local to = stanza.attr.to;
-	local node, host, resource = jid_split(to);
-	local to_bare = node and (node.."@"..host) or host; -- bare JID
-	local from = stanza.attr.from;
-	local from_node, from_host, from_resource = jid_split(from);
-	local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
+	local node, host, resource = jid_split(stanza.attr.to);
+	local from_node, from_host, from_resource = jid_split(stanza.attr.from);
 
 	-- Auto-detect origin if not specified
 	origin = origin or hosts[from_host];
 	if not origin then return false; end
 	
-	if hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
-		return component_handle_stanza(origin, stanza);
-	elseif hosts[host] and hosts[host].type == "component" then -- directed at a component
-		return component_handle_stanza(origin, stanza);
-	end
-
-	if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error") then resource = nil; end
-
-	local host_session = hosts[host]
-	if host_session and host_session.type == "local" then
-		-- Local host
-		local user = host_session.sessions[node];
-		if user then
-			local res = user.sessions[resource];
-			if res then -- resource is online...
-				res.send(stanza); -- Yay \o/
-			else
-				-- if we get here, resource was not specified or was unavailable
-				if stanza.name == "presence" then
-					if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
-						-- inbound presence subscriptions and probes, already handled, so should never get here
-					elseif not resource then -- sender is available or unavailable or error
-						for _, session in pairs(user.sessions) do -- presence broadcast to all user resources.
-							if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription?
-								stanza.attr.to = session.full_jid; -- reset at the end of function
-								session.send(stanza);
-							end
-						end
-					end
-				elseif stanza.name == "message" then -- select a resource to recieve message
-					stanza.attr.to = to_bare;
-					if stanza.attr.type == 'headline' then
-						for _, session in pairs(user.sessions) do -- find resource with greatest priority
-							if session.presence and session.priority >= 0 then
-								session.send(stanza);
-							end
-						end
-					elseif stanza.attr.type == 'groupchat' then
-						-- Groupchat message sent to offline resource
-						origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
-					else
-						local count = 0;
-						for _, session in ipairs(select_best_resources(user)) do
-							session.send(stanza);
-							count = count + 1;
-						end
-						if count == 0 and (stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type) then
-							offlinemanager.store(node, host, stanza);
-							-- TODO deal with storage errors
-						end
-					end
-				elseif stanza.attr.type == "get" or stanza.attr.type == "set" then
-					origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
-				end
-			end
-		else
-			-- user not online
-			if user_exists(node, host) then
-				if stanza.name == "presence" then
-					if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
-						-- inbound presence subscriptions and probes, already handled, so should never get here
-					else
-						-- TODO send unavailable presence or unsubscribed
-					end
-				elseif stanza.name == "message" then -- FIXME if full jid, then send out to resources with highest priority
-					stanza.attr.to = to_bare; -- TODO not in RFC, but seems obvious. Should discuss on the mailing list.
-					if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then
-						offlinemanager.store(node, host, stanza);
-						-- FIXME don't store messages with only chat state notifications
-					elseif stanza.attr.type == "groupchat" then
-						local reply = st.error_reply(stanza, "cancel", "service-unavailable");
-						reply.attr.from = to;
-						origin.send(reply);
-					end
-					-- TODO allow configuration of offline storage
-					-- TODO send error if not storing offline
-				elseif stanza.name == "iq" and (stanza.attr.type == "get" or stanza.attr.type == "set") then
-					origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
-				end
-			else -- user does not exist
-				-- TODO we would get here for nodeless JIDs too. Do something fun maybe? Echo service? Let plugins use xmpp:server/resource addresses?
-				if stanza.name == "presence" then
-					local t = stanza.attr.type;
-					if t == "subscribe" or t == "probe" then
-						origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"}));
-					end
-					-- else ignore
-				elseif stanza.attr.type ~= "error" and (stanza.name ~= "iq" or stanza.attr.type ~= "result") then
-					origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
-				end
-			end
-		end
-	elseif origin.type == "c2s" then
-		-- Remote host
-		local xmlns = stanza.attr.xmlns;
-		--stanza.attr.xmlns = "jabber:server";
-		stanza.attr.xmlns = nil;
-		log("debug", "sending s2s stanza: %s", tostring(stanza));
-		send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors
-		stanza.attr.xmlns = xmlns; -- reset
-	elseif origin.type == "component" or origin.type == "local" then
-		-- Route via s2s for components and modules
-		log("debug", "Routing outgoing stanza for %s to %s", from_host, host);
-		send_s2s(from_host, host, stanza);
+	if hosts[host] then
+		-- old stanza routing code removed
+		core_post_stanza(origin, stanza);
 	else
-		log("warn", "received stanza from unhandled connection type: %s", origin.type);
-	end
-	stanza.attr.to = to; -- reset
-end
-
-function select_best_resources(user)
-	local priority = 0;
-	local recipients = {};
-	for _, session in pairs(user.sessions) do -- find resource with greatest priority
-		if session.presence then
-			local p = session.priority;
-			if p > priority then
-				priority = p;
-				recipients = {session};
-			elseif p == priority then
-				t_insert(recipients, session);
+		log("debug", "Routing to remote...");
+		local host_session = hosts[from_host];
+		if not host_session then
+			log("error", "No hosts[from_host] (please report): %s", tostring(stanza));
+		else
+			local xmlns = stanza.attr.xmlns;
+			stanza.attr.xmlns = nil;
+			local routed = host_session.events.fire_event("route/remote", { origin = origin, stanza = stanza, from_host = from_host, to_host = host });
+			stanza.attr.xmlns = xmlns; -- reset
+			if not routed then
+				log("debug", "... no, just kidding.");
+				if stanza.attr.type == "error" or (stanza.name == "iq" and stanza.attr.type == "result") then return; end
+				core_route_stanza(host_session, st.error_reply(stanza, "cancel", "not-allowed", "Communication with remote domains is not enabled"));
 			end
 		end
 	end
-	return recipients;
 end
+prosody.core_process_stanza = core_process_stanza;
+prosody.core_post_stanza = core_post_stanza;
+prosody.core_route_stanza = core_route_stanza;