X-Git-Url: https://git.enpas.org/?a=blobdiff_plain;f=core%2Fstanza_router.lua;h=9533123e6eaa8b21f82bf30a993b6cf81ae9911d;hb=61fbebe4017d142510fbcfce61714ecb48b99503;hp=fc8cfa92aff4e17170045221848802ff8bfbdf10;hpb=0a1ed571315041a1f6eb177640f4f48c1bbfe460;p=prosody.git diff --git a/core/stanza_router.lua b/core/stanza_router.lua index fc8cfa92..9533123e 100644 --- a/core/stanza_router.lua +++ b/core/stanza_router.lua @@ -1,9 +1,23 @@ +-- Prosody IM v0.2 +-- Copyright (C) 2008 Matthew Wild +-- Copyright (C) 2008 Waqas Hussain +-- +-- This program is free software; you can redistribute it and/or +-- modify it under the terms of the GNU General Public License +-- as published by the Free Software Foundation; either version 2 +-- of the License, or (at your option) any later version. +-- +-- This program is distributed in the hope that it will be useful, +-- but WITHOUT ANY WARRANTY; without even the implied warranty of +-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +-- GNU General Public License for more details. +-- +-- You should have received a copy of the GNU General Public License +-- along with this program; if not, write to the Free Software +-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +-- --- The code in this file should be self-explanatory, though the logic is horrible --- for more info on that, see doc/stanza_routing.txt, which attempts to condense --- the rules from the RFCs (mainly 3921) -require "core.servermanager" local log = require "util.logger".init("stanzarouter") @@ -13,20 +27,38 @@ local user_exists = require "core.usermanager".user_exists; local rostermanager = require "core.rostermanager"; local sessionmanager = require "core.sessionmanager"; +local offlinemanager = require "core.offlinemanager"; local s2s_verify_dialback = require "core.s2smanager".verify_dialback; local s2s_make_authenticated = require "core.s2smanager".make_authenticated; local modules_handle_stanza = require "core.modulemanager".handle_stanza; +local component_handle_stanza = require "core.componentmanager".handle_stanza; + +local handle_outbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes; +local handle_inbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes; +local handle_normal_presence = require "core.presencemanager".handle_normal_presence; local format = string.format; local tostring = tostring; +local t_concat = table.concat; +local t_insert = table.insert; +local tonumber = tonumber; +local s_find = string.find; local jid_split = require "util.jid".split; +local jid_prepped_split = require "util.jid".prepped_split; local print = print; +local function checked_error_reply(origin, stanza) + if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then + origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? + end +end function core_process_stanza(origin, stanza) - log("debug", "Received["..origin.type.."]: "..tostring(stanza)) + (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:top_tag()) + + if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end -- FIXME Hack. This should be removed when we fix namespace handling. -- TODO verify validity of stanza (as well as JID validity) if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then if stanza.attr.type == "set" or stanza.attr.type == "get" then @@ -42,28 +74,73 @@ function core_process_stanza(origin, stanza) error("Client MUST bind resource after auth"); end - local to = stanza.attr.to; - -- TODO also, stazas should be returned to their original state before the function ends + -- TODO also, stanzas should be returned to their original state before the function ends if origin.type == "c2s" then - stanza.attr.from = origin.full_jid; -- quick fix to prevent impersonation (FIXME this would be incorrect when the origin is not c2s) + stanza.attr.from = origin.full_jid; end - - if not to then - core_handle_stanza(origin, stanza); - elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then - local node, host = jid_split(stanza.attr.to); - local to_bare = node and (node.."@"..host) or host; -- bare JID - local from_node, from_host = jid_split(stanza.attr.from); - local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID - handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare); - elseif hosts[to] and hosts[to].type == "local" then - core_handle_stanza(origin, stanza); - elseif stanza.name == "iq" and not select(3, jid_split(to)) then + local to, xmlns = stanza.attr.to, stanza.attr.xmlns; + local from = stanza.attr.from; + local node, host, resource; + local from_node, from_host, from_resource; + local to_bare, from_bare; + if to then + node, host, resource = jid_prepped_split(to); + if not host then + error("Invalid to JID"); + end + to_bare = node and (node.."@"..host) or host; -- bare JID + if resource then to = to_bare.."/"..resource; else to = to_bare; end + stanza.attr.to = to; + end + if from then + from_node, from_host, from_resource = jid_prepped_split(from); + if not from_host then + error("Invalid from JID"); + end + from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID + if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end + 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 + + -- FIXME do stanzas not of jabber:client get handled by components? + if (origin.type == "s2sin" or origin.type == "c2s") and (not xmlns or xmlns == "jabber:server" or xmlns == "jabber:client") 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 conn authed for %s!", from_host, origin.from_host); + return; -- FIXME what should we do here? does this work with subdomains? + end + end + if not to then + core_handle_stanza(origin, stanza); + elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server + core_handle_stanza(origin, stanza); + elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then + modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza); + elseif hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource + component_handle_stanza(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 origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then + handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); + elseif origin.type ~= "c2s" and stanza.name == "iq" and not resource then -- directed at bare JID + core_handle_stanza(origin, stanza); + else + if origin.type == "c2s" and stanza.name == "presence" and to ~= nil and not(origin.roster[to_bare] and (origin.roster[to_bare].subscription == "both" or origin.roster[to_bare].subscription == "from")) then + origin.directed = origin.directed or {}; + t_insert(origin.directed, to); -- FIXME does it make more sense to add to_bare rather than to? + end + core_route_stanza(origin, stanza); + end + else core_handle_stanza(origin, stanza); - elseif stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then - modules_handle_stanza(origin, stanza); - elseif origin.type == "c2s" or origin.type == "s2sin" then - core_route_stanza(origin, stanza); end end @@ -71,165 +148,34 @@ end -- that is, they are handled by this server function core_handle_stanza(origin, stanza) -- Handlers - if modules_handle_stanza(origin, stanza) then return; end - if origin.type == "c2s" or origin.type == "c2s_unauthed" then - local session = origin; - - if stanza.name == "presence" and origin.roster then - if stanza.attr.type == nil or stanza.attr.type == "unavailable" then - for jid in pairs(origin.roster) do -- broadcast to all interested contacts - local subscription = origin.roster[jid].subscription; - if subscription == "both" or subscription == "from" then - stanza.attr.to = jid; - core_route_stanza(origin, stanza); - end - end - local node, host = jid_split(stanza.attr.from); - for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources - if res ~= origin and res.full_jid then -- to resource. FIXME is res.full_jid the correct check? Maybe it should be res.presence - stanza.attr.to = res.full_jid; - core_route_stanza(origin, stanza); - end - end - if not origin.presence then -- presence probes on initial presence -- FIXME does unavailable qualify as initial presence? - local probe = st.presence({from = origin.full_jid, type = "probe"}); - for jid in pairs(origin.roster) do -- probe all contacts we are subscribed to - local subscription = origin.roster[jid].subscription; - if subscription == "both" or subscription == "to" then - probe.attr.to = jid; - core_route_stanza(origin, probe); - end - end - for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all resources - if res ~= origin and stanza.attr.type ~= "unavailable" and res.presence then -- FIXME does unavailable qualify as initial presence? - res.presence.attr.to = origin.full_jid; - core_route_stanza(res, res.presence); - res.presence.attr.to = nil; - end - end - -- TODO resend subscription requests + if modules_handle_stanza(select(2, jid_split(stanza.attr.to)) or origin.host, origin, stanza) then return; end + if origin.type == "c2s" or origin.type == "s2sin" then + if origin.type == "c2s" then + if stanza.name == "presence" and origin.roster then + if stanza.attr.type == nil or stanza.attr.type == "unavailable" then + handle_normal_presence(origin, stanza, core_route_stanza); + else + log("warn", "Unhandled c2s presence: %s", tostring(stanza)); + checked_error_reply(origin, stanza); end - origin.presence = stanza; - stanza.attr.to = nil; -- reset it else - -- TODO error, bad type + log("warn", "Unhandled c2s stanza: %s", tostring(stanza)); + checked_error_reply(origin, stanza); end + else -- s2s stanzas + log("warn", "Unhandled s2s stanza: %s", tostring(stanza)); + checked_error_reply(origin, stanza); end else - log("warn", "Unhandled origin: %s", origin.type); + log("warn", "Unhandled %s stanza: %s", origin.type, tostring(stanza)); + checked_error_reply(origin, stanza); end end -function send_presence_of_available_resources(user, host, jid, recipient_session) - local h = hosts[host]; - local count = 0; - if h and h.type == "local" then - local u = h.sessions[user]; - if u then - for k, session in pairs(u.sessions) do - local pres = session.presence; - if pres then - pres.attr.to = jid; - pres.attr.from = session.full_jid; - recipient_session.send(pres); - pres.attr.to = nil; - pres.attr.from = nil; - count = count + 1; - end - end - end - end - return count; -end - -function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare) - local node, host = jid_split(from_bare); - local st_from, st_to = stanza.attr.from, stanza.attr.to; - stanza.attr.from, stanza.attr.to = from_bare, to_bare; - if stanza.attr.type == "subscribe" then - log("debug", "outbound subscribe from "..from_bare.." for "..to_bare); - -- 1. route stanza - -- 2. roster push (subscription = none, ask = subscribe) - if rostermanager.set_contact_pending_out(node, host, to_bare) then - rostermanager.roster_push(node, host, to_bare); - end -- else file error - core_route_stanza(origin, stanza); - elseif stanza.attr.type == "unsubscribe" then - log("debug", "outbound unsubscribe from "..from_bare.." for "..to_bare); - -- 1. route stanza - -- 2. roster push (subscription = none or from) - if rostermanager.unsubscribe(node, host, to_bare) then - rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed? - end -- else file error - core_route_stanza(origin, stanza); - elseif stanza.attr.type == "subscribed" then - log("debug", "outbound subscribed from "..from_bare.." for "..to_bare); - -- 1. route stanza - -- 2. roster_push () - -- 3. send_presence_of_available_resources - if rostermanager.subscribed(node, host, to_bare) then - rostermanager.roster_push(node, host, to_bare); - core_route_stanza(origin, stanza); - send_presence_of_available_resources(node, host, to_bare, origin); - end - elseif stanza.attr.type == "unsubscribed" then - log("debug", "outbound unsubscribed from "..from_bare.." for "..to_bare); - -- 1. route stanza - -- 2. roster push (subscription = none or to) - if rostermanager.unsubscribed(node, host, to_bare) then - rostermanager.roster_push(node, host, to_bare); - core_route_stanza(origin, stanza); - end - end - stanza.attr.from, stanza.attr.to = st_from, st_to; -end - -function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare) - local node, host = jid_split(to_bare); - local st_from, st_to = stanza.attr.from, stanza.attr.to; - stanza.attr.from, stanza.attr.to = from_bare, to_bare; - if stanza.attr.type == "probe" then - if rostermanager.is_contact_subscribed(node, host, from_bare) then - if 0 == send_presence_of_available_resources(node, host, from_bare, origin) then - -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too) - end - else - core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"})); - end - elseif stanza.attr.type == "subscribe" then - log("debug", "inbound subscribe from "..from_bare.." for "..to_bare); - if rostermanager.is_contact_subscribed(node, host, from_bare) then - core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="subscribed"})); -- already subscribed - else - if not rostermanager.is_contact_pending_in(node, host, from_bare) then - if rostermanager.set_contact_pending_in(node, host, from_bare) then - sessionmanager.send_to_available_resources(node, host, stanza); - end -- TODO else return error, unable to save - end - end - elseif stanza.attr.type == "unsubscribe" then - log("debug", "inbound unsubscribe from "..from_bare.." for "..to_bare); - if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then - rostermanager.roster_push(node, host, from_bare); - end - elseif stanza.attr.type == "subscribed" then - log("debug", "inbound subscribed from "..from_bare.." for "..to_bare); - if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then - rostermanager.roster_push(node, host, from_bare); - end - elseif stanza.attr.type == "unsubscribed" then - log("debug", "inbound unsubscribed from "..from_bare.." for "..to_bare); - if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then - rostermanager.roster_push(node, host, from_bare); - end - end -- discard any other type - stanza.attr.from, stanza.attr.to = st_from, st_to; -end - function core_route_stanza(origin, stanza) -- Hooks --- ...later - + -- Deliver local to = stanza.attr.to; local node, host, resource = jid_split(to); @@ -238,6 +184,10 @@ function core_route_stanza(origin, stanza) 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 + -- Auto-detect origin if not specified + origin = origin or hosts[from_host]; + if not origin then return false; end + if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end local host_session = hosts[host] @@ -250,24 +200,36 @@ function core_route_stanza(origin, stanza) -- 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" then - handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare); + handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); else -- sender is available or unavailable - for k in pairs(user.sessions) do -- presence broadcast to all user resources. FIXME should this be just for available resources? Do we need to check subscription? - if user.sessions[k].full_jid then - stanza.attr.to = user.sessions[k].full_jid; -- reset at the end of function - user.sessions[k].send(stanza); + 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 - for k in pairs(user.sessions) do - if user.sessions[k].full_jid then - res = user.sessions[k]; - break; + local priority = 0; + local recipients = {}; + for _, session in pairs(user.sessions) do -- find resource with greatest priority + local p = session.priority; + if p > priority then + priority = p; + recipients = {session}; + elseif p == priority then + t_insert(recipients, session); end end - -- TODO find resource with greatest priority - res.send(stanza); + local count = 0; + for _, session in pairs(recipients) do + session.send(stanza); + count = count + 1; + end + if count == 0 then + offlinemanager.store(node, host, stanza); + -- TODO deal with storage errors + end else -- TODO send IQ error end @@ -281,19 +243,25 @@ function core_route_stanza(origin, stanza) if user_exists(node, host) then if stanza.name == "presence" then if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then - handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare); + handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); else -- TODO send unavailable presence or unsubscribed end - elseif stanza.name == "message" then - -- TODO send message error, or store offline messages + elseif stanza.name == "message" then -- FIXME if full jid, then send out to resources with highest priority + 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 + end + -- TODO allow configuration of offline storage + -- TODO send error if not storing offline elseif stanza.name == "iq" then - -- TODO send IQ error + 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 - if stanza.attr.type == "probe" 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 @@ -310,12 +278,12 @@ function core_route_stanza(origin, stanza) 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", origin.host, host); + send_s2s(origin.host, host, stanza); else log("warn", "received stanza from unhandled connection type: %s", origin.type); end stanza.attr.to = to; -- reset end - -function handle_stanza_toremote(stanza) - log("error", "Stanza bound for remote host, but s2s is not implemented"); -end