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core/stanza_router.lua @ 718:aa78dfb26593
Stringprep!
| author | Waqas Hussain <waqas20@gmail.com> |
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| date | Thu, 15 Jan 2009 04:36:35 +0500 |
| parent | 715:beec1eb7d9c6 |
| child | 725:96110075288b |
| rev | line source |
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| 615 | 1 -- Prosody IM v0.2 |
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2 -- Copyright (C) 2008 Matthew Wild |
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3 -- Copyright (C) 2008 Waqas Hussain |
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4 -- |
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5 -- This program is free software; you can redistribute it and/or |
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6 -- modify it under the terms of the GNU General Public License |
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7 -- as published by the Free Software Foundation; either version 2 |
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8 -- of the License, or (at your option) any later version. |
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9 -- |
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10 -- This program is distributed in the hope that it will be useful, |
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11 -- but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 -- GNU General Public License for more details. |
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14 -- |
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15 -- You should have received a copy of the GNU General Public License |
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16 -- along with this program; if not, write to the Free Software |
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17 -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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18 -- |
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19 |
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20 |
| 30 | 21 |
| 22 local log = require "util.logger".init("stanzarouter") | |
| 23 | |
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24 local st = require "util.stanza"; |
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25 local send_s2s = require "core.s2smanager".send_to_host; |
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26 local user_exists = require "core.usermanager".user_exists; |
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27 |
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28 local rostermanager = require "core.rostermanager"; |
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29 local sessionmanager = require "core.sessionmanager"; |
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30 local offlinemanager = require "core.offlinemanager"; |
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31 |
| 145 | 32 local s2s_verify_dialback = require "core.s2smanager".verify_dialback; |
| 146 | 33 local s2s_make_authenticated = require "core.s2smanager".make_authenticated; |
| 191 | 34 |
| 35 local modules_handle_stanza = require "core.modulemanager".handle_stanza; | |
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36 local component_handle_stanza = require "core.componentmanager".handle_stanza; |
| 191 | 37 |
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38 local handle_outbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes; |
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39 local handle_inbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes; |
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40 local handle_normal_presence = require "core.presencemanager".handle_normal_presence; |
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41 |
| 145 | 42 local format = string.format; |
| 43 local tostring = tostring; | |
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44 local t_concat = table.concat; |
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45 local t_insert = table.insert; |
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46 local tonumber = tonumber; |
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47 local s_find = string.find; |
| 145 | 48 |
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49 local jid_split = require "util.jid".split; |
| 718 | 50 local jid_prepped_split = require "util.jid".prepped_split; |
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51 local print = print; |
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52 local function checked_error_reply(origin, stanza) |
| 718 | 53 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then |
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54 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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55 end |
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56 end |
| 30 | 57 |
| 58 function core_process_stanza(origin, stanza) | |
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59 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:pretty_print()) --top_tag()) |
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60 |
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61 if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end -- FIXME Hack. This should be removed when we fix namespace handling. |
| 73 | 62 -- TODO verify validity of stanza (as well as JID validity) |
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63 if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then |
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64 if stanza.attr.type == "set" or stanza.attr.type == "get" then |
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65 error("Invalid IQ"); |
| 148 | 66 elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then |
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67 error("Invalid IQ"); |
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68 end |
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69 end |
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70 |
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71 if origin.type == "c2s" and not origin.full_jid |
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72 and not(stanza.name == "iq" and stanza.tags[1].name == "bind" |
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73 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then |
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74 error("Client MUST bind resource after auth"); |
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75 end |
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76 |
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77 -- TODO also, stanzas should be returned to their original state before the function ends |
| 145 | 78 if origin.type == "c2s" then |
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79 stanza.attr.from = origin.full_jid; |
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80 end |
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81 local to, xmlns = stanza.attr.to, stanza.attr.xmlns; |
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82 local from = stanza.attr.from; |
| 718 | 83 local node, host, resource; |
| 84 local from_node, from_host, from_resource; | |
| 85 local to_bare, from_bare; | |
| 86 if to then | |
| 87 node, host, resource = jid_prepped_split(to); | |
| 88 if not host then | |
| 89 error("Invalid to JID"); | |
| 90 end | |
| 91 to_bare = node and (node.."@"..host) or host; -- bare JID | |
| 92 if resource then to = to_bare.."/"..resource; else to = to_bare; end | |
| 93 stanza.attr.to = to; | |
| 94 end | |
| 95 if from then | |
| 96 from_node, from_host, from_resource = jid_prepped_split(from); | |
| 97 if not from_host then | |
| 98 error("Invalid from JID"); | |
| 99 end | |
| 100 from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
| 101 if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end | |
| 102 stanza.attr.from = from; | |
| 103 end | |
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104 |
| 213 | 105 --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us? |
| 106 log("warn", "stanza recieved for a non-local server"); | |
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107 return; -- FIXME what should we do here? |
| 213 | 108 end]] -- FIXME |
| 207 | 109 |
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110 -- FIXME do stanzas not of jabber:client get handled by components? |
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111 if (origin.type == "s2sin" or origin.type == "c2s") and (not xmlns or xmlns == "jabber:server" or xmlns == "jabber:client") then |
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112 if origin.type == "s2sin" and not origin.dummy then |
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113 local host_status = origin.hosts[from_host]; |
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114 if not host_status or not host_status.authed then -- remote server trying to impersonate some other server? |
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115 log("warn", "Received a stanza claiming to be from %s, over a conn authed for %s!", from_host, origin.from_host); |
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116 return; -- FIXME what should we do here? does this work with subdomains? |
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117 end |
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118 end |
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119 if not to then |
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120 core_handle_stanza(origin, stanza); |
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121 elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server |
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122 core_handle_stanza(origin, stanza); |
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123 elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then |
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124 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza); |
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125 elseif hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource |
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126 component_handle_stanza(origin, stanza); |
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127 elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server |
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128 component_handle_stanza(origin, stanza); |
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129 elseif hosts[host] and hosts[host].type == "component" then -- directed at a component |
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130 component_handle_stanza(origin, stanza); |
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131 elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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132 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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133 elseif origin.type ~= "c2s" and stanza.name == "iq" and not resource then -- directed at bare JID |
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134 core_handle_stanza(origin, stanza); |
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|
135 else |
| 641 | 136 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 |
| 137 origin.directed = origin.directed or {}; | |
| 138 t_insert(origin.directed, to); -- FIXME does it make more sense to add to_bare rather than to? | |
| 139 end | |
|
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|
140 core_route_stanza(origin, stanza); |
|
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141 end |
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142 else |
|
212
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|
143 core_handle_stanza(origin, stanza); |
|
119
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144 end |
|
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|
145 end |
|
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146 |
|
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147 -- This function handles stanzas which are not routed any further, |
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148 -- that is, they are handled by this server |
|
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149 function core_handle_stanza(origin, stanza) |
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150 -- Handlers |
|
667
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|
151 if modules_handle_stanza(select(2, jid_split(stanza.attr.to)) or origin.host, origin, stanza) then return; end |
|
570
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|
152 if origin.type == "c2s" or origin.type == "s2sin" then |
|
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|
153 if origin.type == "c2s" then |
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|
154 if stanza.name == "presence" and origin.roster then |
|
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|
155 if stanza.attr.type == nil or stanza.attr.type == "unavailable" then |
|
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|
156 handle_normal_presence(origin, stanza, core_route_stanza); |
|
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157 else |
|
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158 log("warn", "Unhandled c2s presence: %s", tostring(stanza)); |
|
715
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|
159 checked_error_reply(origin, stanza); |
|
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|
160 end |
|
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161 else |
|
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162 log("warn", "Unhandled c2s stanza: %s", tostring(stanza)); |
|
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|
163 checked_error_reply(origin, stanza); |
|
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164 end |
|
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165 else -- s2s stanzas |
|
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|
166 log("warn", "Unhandled s2s stanza: %s", tostring(stanza)); |
|
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|
167 checked_error_reply(origin, stanza); |
|
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|
168 end |
| 145 | 169 else |
|
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170 log("warn", "Unhandled %s stanza: %s", origin.type, tostring(stanza)); |
|
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|
171 checked_error_reply(origin, stanza); |
|
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172 end |
| 30 | 173 end |
| 174 | |
| 175 function core_route_stanza(origin, stanza) | |
| 176 -- Hooks | |
|
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177 --- ...later |
| 207 | 178 |
| 30 | 179 -- Deliver |
|
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180 local to = stanza.attr.to; |
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181 local node, host, resource = jid_split(to); |
| 170 | 182 local to_bare = node and (node.."@"..host) or host; -- bare JID |
| 183 local from = stanza.attr.from; | |
| 184 local from_node, from_host, from_resource = jid_split(from); | |
| 185 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
|
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186 |
|
372
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|
187 -- Auto-detect origin if not specified |
|
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|
188 origin = origin or hosts[from_host]; |
|
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|
189 if not origin then return false; end |
|
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|
190 |
| 151 | 191 if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end |
|
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|
192 |
|
68
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|
193 local host_session = hosts[host] |
|
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194 if host_session and host_session.type == "local" then |
|
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|
195 -- Local host |
|
71
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|
196 local user = host_session.sessions[node]; |
|
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|
197 if user then |
| 72 | 198 local res = user.sessions[resource]; |
|
71
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diff
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|
199 if not res then |
|
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diff
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|
200 -- if we get here, resource was not specified or was unavailable |
|
106
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|
201 if stanza.name == "presence" then |
| 151 | 202 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
|
321
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diff
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|
203 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
| 151 | 204 else -- sender is available or unavailable |
|
200
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diff
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|
205 for _, session in pairs(user.sessions) do -- presence broadcast to all user resources. |
|
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diff
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|
206 if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription? |
|
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diff
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|
207 stanza.attr.to = session.full_jid; -- reset at the end of function |
|
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diff
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|
208 session.send(stanza); |
|
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|
209 end |
|
106
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|
210 end |
|
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|
211 end |
|
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|
212 elseif stanza.name == "message" then -- select a resource to recieve message |
|
200
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diff
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|
213 local priority = 0; |
|
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diff
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|
214 local recipients = {}; |
|
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diff
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|
215 for _, session in pairs(user.sessions) do -- find resource with greatest priority |
|
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diff
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|
216 local p = session.priority; |
|
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diff
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|
217 if p > priority then |
|
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diff
changeset
|
218 priority = p; |
|
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199
diff
changeset
|
219 recipients = {session}; |
|
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diff
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|
220 elseif p == priority then |
|
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199
diff
changeset
|
221 t_insert(recipients, session); |
|
106
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105
diff
changeset
|
222 end |
|
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diff
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|
223 end |
|
249
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diff
changeset
|
224 local count = 0; |
| 237 | 225 for _, session in pairs(recipients) do |
|
200
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diff
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|
226 session.send(stanza); |
|
249
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diff
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|
227 count = count + 1; |
|
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|
228 end |
|
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diff
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|
229 if count == 0 then |
|
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diff
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|
230 offlinemanager.store(node, host, stanza); |
|
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diff
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|
231 -- TODO deal with storage errors |
|
200
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diff
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|
232 end |
|
106
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|
233 else |
|
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|
234 -- TODO send IQ error |
|
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|
235 end |
|
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|
236 else |
|
121
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|
237 -- User + resource is online... |
| 170 | 238 stanza.attr.to = res.full_jid; -- reset at the end of function |
|
186
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sends2s -> s2s_session.send(), s2s_session.send() -> s2s_session.sends2s()
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178
diff
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|
239 res.send(stanza); -- Yay \o/ |
|
106
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|
240 end |
|
71
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|
241 else |
|
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|
242 -- user not online |
|
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|
243 if user_exists(node, host) then |
|
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|
244 if stanza.name == "presence" then |
|
175
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diff
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|
245 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
|
321
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|
246 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
|
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|
247 else |
|
175
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|
248 -- TODO send unavailable presence or unsubscribed |
|
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|
249 end |
|
642
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|
250 elseif stanza.name == "message" then -- FIXME if full jid, then send out to resources with highest priority |
|
249
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diff
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|
251 if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then |
|
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|
252 offlinemanager.store(node, host, stanza); |
|
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|
253 -- FIXME don't store messages with only chat state notifications |
|
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diff
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|
254 end |
|
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diff
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|
255 -- TODO allow configuration of offline storage |
|
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|
256 -- TODO send error if not storing offline |
|
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|
257 elseif stanza.name == "iq" then |
|
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|
258 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
|
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|
259 end |
|
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|
260 else -- user does not exist |
|
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261 -- 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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262 if stanza.name == "presence" then |
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263 local t = stanza.attr.type; |
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264 if t == "subscribe" or t == "probe" then |
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265 origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"})); |
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266 end |
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267 -- else ignore |
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268 else |
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269 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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270 end |
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271 end |
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272 end |
| 148 | 273 elseif origin.type == "c2s" then |
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274 -- Remote host |
| 170 | 275 local xmlns = stanza.attr.xmlns; |
| 148 | 276 --stanza.attr.xmlns = "jabber:server"; |
| 277 stanza.attr.xmlns = nil; | |
| 146 | 278 log("debug", "sending s2s stanza: %s", tostring(stanza)); |
| 170 | 279 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors |
| 280 stanza.attr.xmlns = xmlns; -- reset | |
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281 elseif origin.type == "component" or origin.type == "local" then |
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282 -- Route via s2s for components and modules |
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283 log("debug", "Routing outgoing stanza for %s to %s", origin.host, host); |
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284 send_s2s(origin.host, host, stanza); |
| 148 | 285 else |
| 286 log("warn", "received stanza from unhandled connection type: %s", origin.type); | |
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287 end |
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288 stanza.attr.to = to; -- reset |
| 30 | 289 end |
