author | Matthew Wild <mwild1@gmail.com> |
Thu, 30 Oct 2008 21:11:22 +0000 | |
changeset 186 | bfa8a30ea488 |
parent 178 | 8315cf03f304 |
child 187 | 2e16e5077d8f |
permissions | -rw-r--r-- |
30 | 1 |
|
2 |
-- The code in this file should be self-explanatory, though the logic is horrible |
|
3 |
-- for more info on that, see doc/stanza_routing.txt, which attempts to condense |
|
4 |
-- the rules from the RFCs (mainly 3921) |
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5 |
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6 |
require "core.servermanager" |
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7 |
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8 |
local log = require "util.logger".init("stanzarouter") |
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9 |
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10 |
local st = require "util.stanza"; |
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11 |
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local user_exists = require "core.usermanager".user_exists; |
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13 |
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local rostermanager = require "core.rostermanager"; |
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local sessionmanager = require "core.sessionmanager"; |
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16 |
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145 | 17 |
local s2s_verify_dialback = require "core.s2smanager".verify_dialback; |
146 | 18 |
local s2s_make_authenticated = require "core.s2smanager".make_authenticated; |
145 | 19 |
local format = string.format; |
20 |
local tostring = tostring; |
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21 |
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local jid_split = require "util.jid".split; |
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23 |
local print = print; |
30 | 24 |
|
25 |
function core_process_stanza(origin, stanza) |
|
66 | 26 |
log("debug", "Received: "..tostring(stanza)) |
73 | 27 |
-- TODO verify validity of stanza (as well as JID validity) |
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if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then |
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if stanza.attr.type == "set" or stanza.attr.type == "get" then |
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30 |
error("Invalid IQ"); |
148 | 31 |
elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then |
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error("Invalid IQ"); |
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33 |
end |
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34 |
end |
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35 |
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36 |
if origin.type == "c2s" and not origin.full_jid |
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37 |
and not(stanza.name == "iq" and stanza.tags[1].name == "bind" |
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38 |
and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then |
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error("Client MUST bind resource after auth"); |
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40 |
end |
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41 |
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30 | 42 |
local to = stanza.attr.to; |
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43 |
-- TODO also, stazas should be returned to their original state before the function ends |
145 | 44 |
if origin.type == "c2s" then |
45 |
stanza.attr.from = origin.full_jid; -- quick fix to prevent impersonation (FIXME this would be incorrect when the origin is not c2s) |
|
46 |
end |
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30 | 47 |
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48 |
if not to then |
170 | 49 |
core_handle_stanza(origin, stanza); |
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elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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51 |
local node, host = jid_split(stanza.attr.to); |
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52 |
local to_bare = node and (node.."@"..host) or host; -- bare JID |
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53 |
local from_node, from_host = jid_split(stanza.attr.from); |
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local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID |
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55 |
handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare); |
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elseif hosts[to] and hosts[to].type == "local" then |
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57 |
core_handle_stanza(origin, stanza); |
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58 |
elseif stanza.name == "iq" and not select(3, jid_split(to)) then |
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59 |
core_handle_stanza(origin, stanza); |
148 | 60 |
elseif origin.type == "c2s" or origin.type == "s2sin" then |
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61 |
core_route_stanza(origin, stanza); |
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62 |
end |
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63 |
end |
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64 |
|
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65 |
-- This function handles stanzas which are not routed any further, |
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66 |
-- that is, they are handled by this server |
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67 |
function core_handle_stanza(origin, stanza) |
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68 |
-- Handlers |
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69 |
if origin.type == "c2s" or origin.type == "c2s_unauthed" then |
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local session = origin; |
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71 |
|
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if stanza.name == "presence" and origin.roster then |
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if stanza.attr.type == nil or stanza.attr.type == "unavailable" then |
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for jid in pairs(origin.roster) do -- broadcast to all interested contacts |
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75 |
local subscription = origin.roster[jid].subscription; |
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if subscription == "both" or subscription == "from" then |
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stanza.attr.to = jid; |
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core_route_stanza(origin, stanza); |
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end |
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80 |
end |
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local node, host = jid_split(stanza.attr.from); |
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for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources |
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83 |
if res ~= origin and res.full_jid then -- to resource. FIXME is res.full_jid the correct check? Maybe it should be res.presence |
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stanza.attr.to = res.full_jid; |
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85 |
core_route_stanza(origin, stanza); |
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86 |
end |
151 | 87 |
end |
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88 |
if not origin.presence then -- presence probes on initial presence -- FIXME does unavailable qualify as initial presence? |
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89 |
local probe = st.presence({from = origin.full_jid, type = "probe"}); |
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for jid in pairs(origin.roster) do -- probe all contacts we are subscribed to |
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local subscription = origin.roster[jid].subscription; |
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if subscription == "both" or subscription == "to" then |
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probe.attr.to = jid; |
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94 |
core_route_stanza(origin, probe); |
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95 |
end |
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96 |
end |
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97 |
for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all resources |
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98 |
if res ~= origin and stanza.attr.type ~= "unavailable" and res.presence then -- FIXME does unavailable qualify as initial presence? |
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99 |
res.presence.attr.to = origin.full_jid; |
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100 |
core_route_stanza(res, res.presence); |
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101 |
res.presence.attr.to = nil; |
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102 |
end |
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103 |
end |
151 | 104 |
-- TODO resend subscription requests |
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105 |
end |
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106 |
origin.presence = stanza; |
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107 |
stanza.attr.to = nil; -- reset it |
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108 |
else |
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109 |
-- TODO error, bad type |
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110 |
end |
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111 |
else |
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112 |
log("debug", "Routing stanza to local"); |
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113 |
handle_stanza(session, stanza); |
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114 |
end |
148 | 115 |
elseif origin.type == "s2sin_unauthed" or origin.type == "s2sin" then |
147 | 116 |
if stanza.attr.xmlns == "jabber:server:dialback" then |
117 |
if stanza.name == "verify" then |
|
118 |
-- We are being asked to verify the key, to ensure it was generated by us |
|
119 |
log("debug", "verifying dialback key..."); |
|
120 |
local attr = stanza.attr; |
|
121 |
print(tostring(attr.to), tostring(attr.from)) |
|
122 |
print(tostring(origin.to_host), tostring(origin.from_host)) |
|
123 |
-- FIXME: Grr, ejabberd breaks this one too?? it is black and white in XEP-220 example 34 |
|
124 |
--if attr.from ~= origin.to_host then error("invalid-from"); end |
|
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125 |
local type; |
147 | 126 |
if s2s_verify_dialback(attr.id, attr.from, attr.to, stanza[1]) then |
127 |
type = "valid" |
|
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128 |
else |
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129 |
type = "invalid" |
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130 |
log("warn", "Asked to verify a dialback key that was incorrect. An imposter is claiming to be %s?", attr.to); |
147 | 131 |
end |
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132 |
origin.sends2s(format("<db:verify from='%s' to='%s' id='%s' type='%s'>%s</db:verify>", attr.to, attr.from, attr.id, type, stanza[1])); |
148 | 133 |
elseif stanza.name == "result" and origin.type == "s2sin_unauthed" then |
134 |
-- he wants to be identified through dialback |
|
147 | 135 |
-- We need to check the key with the Authoritative server |
136 |
local attr = stanza.attr; |
|
137 |
origin.from_host = attr.from; |
|
138 |
origin.to_host = attr.to; |
|
139 |
origin.dialback_key = stanza[1]; |
|
140 |
log("debug", "asking %s if key %s belongs to them", attr.from, stanza[1]); |
|
141 |
send_s2s(attr.to, attr.from, format("<db:verify from='%s' to='%s' id='%s'>%s</db:verify>", attr.to, attr.from, origin.streamid, stanza[1])); |
|
142 |
hosts[attr.from].dialback_verifying = origin; |
|
145 | 143 |
end |
144 |
end |
|
147 | 145 |
elseif origin.type == "s2sout_unauthed" or origin.type == "s2sout" then |
146 |
if stanza.attr.xmlns == "jabber:server:dialback" then |
|
147 |
if stanza.name == "result" then |
|
148 |
if stanza.attr.type == "valid" then |
|
149 |
s2s_make_authenticated(origin); |
|
150 |
else |
|
151 |
-- FIXME |
|
152 |
error("dialback failed!"); |
|
153 |
end |
|
154 |
elseif stanza.name == "verify" and origin.dialback_verifying then |
|
155 |
local valid; |
|
156 |
local attr = stanza.attr; |
|
157 |
if attr.type == "valid" then |
|
158 |
s2s_make_authenticated(origin.dialback_verifying); |
|
159 |
valid = "valid"; |
|
160 |
else |
|
161 |
-- Warn the original connection that is was not verified successfully |
|
162 |
log("warn", "dialback for "..(origin.dialback_verifying.from_host or "(unknown)").." failed"); |
|
163 |
valid = "invalid"; |
|
164 |
end |
|
186
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|
165 |
origin.dialback_verifying.sends2s(format("<db:result from='%s' to='%s' id='%s' type='%s'>%s</db:result>", attr.from, attr.to, attr.id, valid, origin.dialback_verifying.dialback_key)); |
146 | 166 |
end |
167 |
end |
|
145 | 168 |
else |
169 |
log("warn", "Unhandled origin: %s", origin.type); |
|
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|
170 |
end |
30 | 171 |
end |
172 |
||
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173 |
function send_presence_of_available_resources(user, host, jid, recipient_session) |
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174 |
local h = hosts[host]; |
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175 |
local count = 0; |
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176 |
if h and h.type == "local" then |
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177 |
local u = h.sessions[user]; |
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178 |
if u then |
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179 |
for k, session in pairs(u.sessions) do |
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180 |
local pres = session.presence; |
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|
181 |
if pres then |
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|
182 |
pres.attr.to = jid; |
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|
183 |
pres.attr.from = session.full_jid; |
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|
184 |
recipient_session.send(pres); |
175
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|
185 |
pres.attr.to = nil; |
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186 |
pres.attr.from = nil; |
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|
187 |
count = count + 1; |
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|
188 |
end |
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|
189 |
end |
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|
190 |
end |
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|
191 |
end |
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|
192 |
return count; |
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|
193 |
end |
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|
194 |
|
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|
195 |
function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare) |
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|
196 |
local node, host = jid_split(from_bare); |
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|
197 |
local st_from, st_to = stanza.attr.from, stanza.attr.to; |
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|
198 |
stanza.attr.from, stanza.attr.to = from_bare, to_bare; |
176
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|
199 |
if stanza.attr.type == "subscribe" then |
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|
200 |
log("debug", "outbound subscribe from "..from_bare.." for "..to_bare); |
176
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|
201 |
-- 1. route stanza |
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|
202 |
-- 2. roster push (subscription = none, ask = subscribe) |
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|
203 |
if rostermanager.set_contact_pending_out(node, host, to_bare) then |
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changeset
|
204 |
rostermanager.roster_push(node, host, to_bare); |
176
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|
205 |
end -- else file error |
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|
206 |
core_route_stanza(origin, stanza); |
176
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|
207 |
elseif stanza.attr.type == "unsubscribe" then |
177
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|
208 |
log("debug", "outbound unsubscribe from "..from_bare.." for "..to_bare); |
176
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|
209 |
-- 1. route stanza |
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|
210 |
-- 2. roster push (subscription = none or from) |
177
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|
211 |
if rostermanager.unsubscribe(node, host, to_bare) then |
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|
212 |
rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed? |
176
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|
213 |
end -- else file error |
177
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|
214 |
core_route_stanza(origin, stanza); |
176
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|
215 |
elseif stanza.attr.type == "subscribed" then |
177
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|
216 |
log("debug", "outbound subscribed from "..from_bare.." for "..to_bare); |
176
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changeset
|
217 |
-- 1. route stanza |
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diff
changeset
|
218 |
-- 2. roster_push () |
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|
219 |
-- 3. send_presence_of_available_resources |
177
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|
220 |
if rostermanager.subscribed(node, host, to_bare) then |
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parents:
176
diff
changeset
|
221 |
rostermanager.roster_push(node, host, to_bare); |
606c433955e7
Bug fixes and checks for presence subscriptions, etc
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parents:
176
diff
changeset
|
222 |
core_route_stanza(origin, stanza); |
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Bug fixes and checks for presence subscriptions, etc
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parents:
176
diff
changeset
|
223 |
send_presence_of_available_resources(node, host, to_bare, origin); |
176
e5cd2a03891d
Outbound presence subscription
Waqas Hussain <waqas20@gmail.com>
parents:
175
diff
changeset
|
224 |
end |
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Outbound presence subscription
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parents:
175
diff
changeset
|
225 |
elseif stanza.attr.type == "unsubscribed" then |
177
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parents:
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diff
changeset
|
226 |
log("debug", "outbound unsubscribed from "..from_bare.." for "..to_bare); |
176
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parents:
175
diff
changeset
|
227 |
-- 1. route stanza |
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parents:
175
diff
changeset
|
228 |
-- 2. roster push (subscription = none or to) |
177
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diff
changeset
|
229 |
if rostermanager.unsubscribed(node, host, to_bare) then |
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Bug fixes and checks for presence subscriptions, etc
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parents:
176
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|
230 |
rostermanager.roster_push(node, host, to_bare); |
606c433955e7
Bug fixes and checks for presence subscriptions, etc
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parents:
176
diff
changeset
|
231 |
core_route_stanza(origin, stanza); |
176
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175
diff
changeset
|
232 |
end |
e5cd2a03891d
Outbound presence subscription
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parents:
175
diff
changeset
|
233 |
end |
177
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Bug fixes and checks for presence subscriptions, etc
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diff
changeset
|
234 |
stanza.attr.from, stanza.attr.to = st_from, st_to; |
176
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175
diff
changeset
|
235 |
end |
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Outbound presence subscription
Waqas Hussain <waqas20@gmail.com>
parents:
175
diff
changeset
|
236 |
|
175
5f71d290bb44
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diff
changeset
|
237 |
function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare) |
5f71d290bb44
Routing code reorganization
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parents:
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diff
changeset
|
238 |
local node, host = jid_split(to_bare); |
177
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Bug fixes and checks for presence subscriptions, etc
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parents:
176
diff
changeset
|
239 |
local st_from, st_to = stanza.attr.from, stanza.attr.to; |
606c433955e7
Bug fixes and checks for presence subscriptions, etc
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parents:
176
diff
changeset
|
240 |
stanza.attr.from, stanza.attr.to = from_bare, to_bare; |
175
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diff
changeset
|
241 |
if stanza.attr.type == "probe" then |
5f71d290bb44
Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents:
174
diff
changeset
|
242 |
if rostermanager.is_contact_subscribed(node, host, from_bare) then |
5f71d290bb44
Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents:
174
diff
changeset
|
243 |
if 0 == send_presence_of_available_resources(node, host, from_bare, origin) then |
5f71d290bb44
Routing code reorganization
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parents:
174
diff
changeset
|
244 |
-- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too) |
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parents:
174
diff
changeset
|
245 |
end |
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diff
changeset
|
246 |
else |
177
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Bug fixes and checks for presence subscriptions, etc
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diff
changeset
|
247 |
core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"})); |
175
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changeset
|
248 |
end |
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diff
changeset
|
249 |
elseif stanza.attr.type == "subscribe" then |
177
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Bug fixes and checks for presence subscriptions, etc
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changeset
|
250 |
log("debug", "inbound subscribe from "..from_bare.." for "..to_bare); |
175
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changeset
|
251 |
if rostermanager.is_contact_subscribed(node, host, from_bare) then |
177
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|
252 |
core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="subscribed"})); -- already subscribed |
175
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diff
changeset
|
253 |
else |
177
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Bug fixes and checks for presence subscriptions, etc
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diff
changeset
|
254 |
if not rostermanager.is_contact_pending_in(node, host, from_bare) then |
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Bug fixes and checks for presence subscriptions, etc
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176
diff
changeset
|
255 |
if rostermanager.set_contact_pending_in(node, host, from_bare) then |
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Bug fixes and checks for presence subscriptions, etc
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176
diff
changeset
|
256 |
sessionmanager.send_to_available_resources(node, host, stanza); |
176
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changeset
|
257 |
end -- TODO else return error, unable to save |
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diff
changeset
|
258 |
end |
175
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changeset
|
259 |
end |
5f71d290bb44
Routing code reorganization
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174
diff
changeset
|
260 |
elseif stanza.attr.type == "unsubscribe" then |
177
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Bug fixes and checks for presence subscriptions, etc
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diff
changeset
|
261 |
log("debug", "inbound unsubscribe from "..from_bare.." for "..to_bare); |
175
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diff
changeset
|
262 |
if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then |
5f71d290bb44
Routing code reorganization
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parents:
174
diff
changeset
|
263 |
rostermanager.roster_push(node, host, from_bare); |
5f71d290bb44
Routing code reorganization
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parents:
174
diff
changeset
|
264 |
end |
5f71d290bb44
Routing code reorganization
Waqas Hussain <waqas20@gmail.com>
parents:
174
diff
changeset
|
265 |
elseif stanza.attr.type == "subscribed" then |
177
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Bug fixes and checks for presence subscriptions, etc
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176
diff
changeset
|
266 |
log("debug", "inbound subscribed from "..from_bare.." for "..to_bare); |
175
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174
diff
changeset
|
267 |
if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then |
5f71d290bb44
Routing code reorganization
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parents:
174
diff
changeset
|
268 |
rostermanager.roster_push(node, host, from_bare); |
5f71d290bb44
Routing code reorganization
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parents:
174
diff
changeset
|
269 |
end |
5f71d290bb44
Routing code reorganization
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parents:
174
diff
changeset
|
270 |
elseif stanza.attr.type == "unsubscribed" then |
177
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Bug fixes and checks for presence subscriptions, etc
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diff
changeset
|
271 |
log("debug", "inbound unsubscribed from "..from_bare.." for "..to_bare); |
175
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diff
changeset
|
272 |
if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then |
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Routing code reorganization
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parents:
174
diff
changeset
|
273 |
rostermanager.roster_push(node, host, from_bare); |
5f71d290bb44
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174
diff
changeset
|
274 |
end |
5f71d290bb44
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diff
changeset
|
275 |
end -- discard any other type |
177
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176
diff
changeset
|
276 |
stanza.attr.from, stanza.attr.to = st_from, st_to; |
113
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end |
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30 | 279 |
function core_route_stanza(origin, stanza) |
280 |
-- Hooks |
|
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--- ...later |
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|
30 | 283 |
-- Deliver |
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local to = stanza.attr.to; |
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local node, host, resource = jid_split(to); |
170 | 286 |
local to_bare = node and (node.."@"..host) or host; -- bare JID |
287 |
local from = stanza.attr.from; |
|
288 |
local from_node, from_host, from_resource = jid_split(from); |
|
289 |
local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID |
|
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151 | 291 |
if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end |
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292 |
|
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293 |
local host_session = hosts[host] |
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if host_session and host_session.type == "local" then |
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-- Local host |
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local user = host_session.sessions[node]; |
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if user then |
72 | 298 |
local res = user.sessions[resource]; |
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if not res then |
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300 |
-- if we get here, resource was not specified or was unavailable |
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if stanza.name == "presence" then |
151 | 302 |
if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare); |
151 | 304 |
else -- sender is available or unavailable |
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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? |
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if user.sessions[k].full_jid then |
170 | 307 |
stanza.attr.to = user.sessions[k].full_jid; -- reset at the end of function |
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user.sessions[k].send(stanza); |
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end |
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310 |
end |
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311 |
end |
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elseif stanza.name == "message" then -- select a resource to recieve message |
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for k in pairs(user.sessions) do |
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if user.sessions[k].full_jid then |
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res = user.sessions[k]; |
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316 |
break; |
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end |
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end |
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-- TODO find resource with greatest priority |
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res.send(stanza); |
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321 |
else |
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-- TODO send IQ error |
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323 |
end |
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else |
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-- User + resource is online... |
170 | 326 |
stanza.attr.to = res.full_jid; -- reset at the end of function |
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327 |
res.send(stanza); -- Yay \o/ |
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328 |
end |
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329 |
else |
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330 |
-- user not online |
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331 |
if user_exists(node, host) then |
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332 |
if stanza.name == "presence" then |
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if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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334 |
handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare); |
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335 |
else |
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-- TODO send unavailable presence or unsubscribed |
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337 |
end |
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338 |
elseif stanza.name == "message" then |
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339 |
-- TODO send message error, or store offline messages |
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340 |
elseif stanza.name == "iq" then |
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341 |
-- TODO send IQ error |
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342 |
end |
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343 |
else -- user does not exist |
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344 |
-- TODO we would get here for nodeless JIDs too. Do something fun maybe? Echo service? Let plugins use xmpp:server/resource addresses? |
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345 |
if stanza.name == "presence" then |
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346 |
if stanza.attr.type == "probe" then |
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347 |
origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"})); |
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348 |
end |
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349 |
-- else ignore |
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350 |
else |
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351 |
origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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352 |
end |
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353 |
end |
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354 |
end |
148 | 355 |
elseif origin.type == "c2s" then |
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356 |
-- Remote host |
170 | 357 |
local xmlns = stanza.attr.xmlns; |
148 | 358 |
--stanza.attr.xmlns = "jabber:server"; |
359 |
stanza.attr.xmlns = nil; |
|
146 | 360 |
log("debug", "sending s2s stanza: %s", tostring(stanza)); |
170 | 361 |
send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors |
362 |
stanza.attr.xmlns = xmlns; -- reset |
|
148 | 363 |
else |
364 |
log("warn", "received stanza from unhandled connection type: %s", origin.type); |
|
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365 |
end |
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366 |
stanza.attr.to = to; -- reset |
30 | 367 |
end |
368 |
||
369 |
function handle_stanza_toremote(stanza) |
|
370 |
log("error", "Stanza bound for remote host, but s2s is not implemented"); |
|
371 |
end |