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core/stanza_router.lua @ 642:0ae8584ba3e7
More error replies for offline and non-existing users
| author | Waqas Hussain <waqas20@gmail.com> |
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| date | Thu, 25 Dec 2008 05:16:11 +0500 |
| parent | 641:658a2de74afc |
| child | 667:4f4d94253547 |
| 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; |
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50 local print = print; |
| 30 | 51 |
| 52 function core_process_stanza(origin, stanza) | |
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53 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:pretty_print()) --top_tag()) |
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54 |
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55 if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end -- FIXME Hack. This should be removed when we fix namespace handling. |
| 73 | 56 -- TODO verify validity of stanza (as well as JID validity) |
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57 if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then |
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58 if stanza.attr.type == "set" or stanza.attr.type == "get" then |
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59 error("Invalid IQ"); |
| 148 | 60 elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then |
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61 error("Invalid IQ"); |
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62 end |
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63 end |
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64 |
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65 if origin.type == "c2s" and not origin.full_jid |
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66 and not(stanza.name == "iq" and stanza.tags[1].name == "bind" |
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67 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then |
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68 error("Client MUST bind resource after auth"); |
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69 end |
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70 |
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71 -- TODO also, stanzas should be returned to their original state before the function ends |
| 145 | 72 if origin.type == "c2s" then |
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73 stanza.attr.from = origin.full_jid; |
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74 end |
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75 local to, xmlns = stanza.attr.to, stanza.attr.xmlns; |
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76 local node, host, resource = jid_split(to); |
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77 local to_bare = node and (node.."@"..host) or host; -- bare JID |
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78 local from = stanza.attr.from; |
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79 local from_node, from_host, from_resource = jid_split(from); |
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80 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID |
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81 |
| 213 | 82 --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us? |
| 83 log("warn", "stanza recieved for a non-local server"); | |
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84 return; -- FIXME what should we do here? |
| 213 | 85 end]] -- FIXME |
| 207 | 86 |
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87 -- FIXME do stanzas not of jabber:client get handled by components? |
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88 if (origin.type == "s2sin" or origin.type == "c2s") and (not xmlns or xmlns == "jabber:server" or xmlns == "jabber:client") then |
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89 if origin.type == "s2sin" and not origin.dummy then |
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90 local host_status = origin.hosts[from_host]; |
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91 if not host_status or not host_status.authed then -- remote server trying to impersonate some other server? |
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92 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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93 return; -- FIXME what should we do here? does this work with subdomains? |
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94 end |
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95 end |
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96 if not to then |
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97 core_handle_stanza(origin, stanza); |
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98 elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server |
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99 core_handle_stanza(origin, stanza); |
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100 elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then |
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101 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza); |
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102 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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103 component_handle_stanza(origin, stanza); |
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104 elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server |
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105 component_handle_stanza(origin, stanza); |
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106 elseif hosts[host] and hosts[host].type == "component" then -- directed at a component |
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107 component_handle_stanza(origin, stanza); |
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108 elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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109 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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110 elseif origin.type ~= "c2s" and stanza.name == "iq" and not resource then -- directed at bare JID |
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111 core_handle_stanza(origin, stanza); |
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112 else |
| 641 | 113 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 |
| 114 origin.directed = origin.directed or {}; | |
| 115 t_insert(origin.directed, to); -- FIXME does it make more sense to add to_bare rather than to? | |
| 116 end | |
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117 core_route_stanza(origin, stanza); |
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118 end |
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119 else |
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120 core_handle_stanza(origin, stanza); |
|
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121 end |
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122 end |
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123 |
|
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124 -- This function handles stanzas which are not routed any further, |
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125 -- that is, they are handled by this server |
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126 function core_handle_stanza(origin, stanza) |
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127 -- Handlers |
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128 if modules_handle_stanza(stanza.attr.to or origin.host, origin, stanza) then return; end |
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129 if origin.type == "c2s" or origin.type == "s2sin" then |
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130 if origin.type == "c2s" then |
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131 if stanza.name == "presence" and origin.roster then |
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132 if stanza.attr.type == nil or stanza.attr.type == "unavailable" then |
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133 handle_normal_presence(origin, stanza, core_route_stanza); |
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134 else |
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135 log("warn", "Unhandled c2s presence: %s", tostring(stanza)); |
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136 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" then |
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137 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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138 end |
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139 end |
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140 else |
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141 log("warn", "Unhandled c2s stanza: %s", tostring(stanza)); |
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142 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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143 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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144 end |
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145 end |
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146 else -- s2s stanzas |
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147 log("warn", "Unhandled s2s stanza: %s", tostring(stanza)); |
|
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148 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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149 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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150 end |
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151 end |
| 145 | 152 else |
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153 log("warn", "Unhandled %s stanza: %s", origin.type, tostring(stanza)); |
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154 end |
| 30 | 155 end |
| 156 | |
| 157 function core_route_stanza(origin, stanza) | |
| 158 -- Hooks | |
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159 --- ...later |
| 207 | 160 |
| 30 | 161 -- Deliver |
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162 local to = stanza.attr.to; |
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163 local node, host, resource = jid_split(to); |
| 170 | 164 local to_bare = node and (node.."@"..host) or host; -- bare JID |
| 165 local from = stanza.attr.from; | |
| 166 local from_node, from_host, from_resource = jid_split(from); | |
| 167 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
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168 |
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169 -- Auto-detect origin if not specified |
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170 origin = origin or hosts[from_host]; |
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171 if not origin then return false; end |
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172 |
| 151 | 173 if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end |
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174 |
|
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175 local host_session = hosts[host] |
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176 if host_session and host_session.type == "local" then |
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177 -- Local host |
|
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178 local user = host_session.sessions[node]; |
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179 if user then |
| 72 | 180 local res = user.sessions[resource]; |
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181 if not res then |
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182 -- if we get here, resource was not specified or was unavailable |
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183 if stanza.name == "presence" then |
| 151 | 184 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
|
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185 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
| 151 | 186 else -- sender is available or unavailable |
|
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187 for _, session in pairs(user.sessions) do -- presence broadcast to all user resources. |
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188 if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription? |
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189 stanza.attr.to = session.full_jid; -- reset at the end of function |
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190 session.send(stanza); |
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191 end |
|
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192 end |
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193 end |
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194 elseif stanza.name == "message" then -- select a resource to recieve message |
|
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195 local priority = 0; |
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196 local recipients = {}; |
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197 for _, session in pairs(user.sessions) do -- find resource with greatest priority |
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198 local p = session.priority; |
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199 if p > priority then |
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200 priority = p; |
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201 recipients = {session}; |
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202 elseif p == priority then |
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203 t_insert(recipients, session); |
|
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204 end |
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205 end |
|
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206 local count = 0; |
| 237 | 207 for _, session in pairs(recipients) do |
|
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208 session.send(stanza); |
|
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209 count = count + 1; |
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210 end |
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211 if count == 0 then |
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212 offlinemanager.store(node, host, stanza); |
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213 -- TODO deal with storage errors |
|
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214 end |
|
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215 else |
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216 -- TODO send IQ error |
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217 end |
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218 else |
|
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219 -- User + resource is online... |
| 170 | 220 stanza.attr.to = res.full_jid; -- reset at the end of function |
|
186
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221 res.send(stanza); -- Yay \o/ |
|
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222 end |
|
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223 else |
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224 -- user not online |
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225 if user_exists(node, host) then |
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226 if stanza.name == "presence" then |
|
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227 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
|
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228 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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229 else |
|
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230 -- TODO send unavailable presence or unsubscribed |
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231 end |
|
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232 elseif stanza.name == "message" then -- FIXME if full jid, then send out to resources with highest priority |
|
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233 if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then |
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234 offlinemanager.store(node, host, stanza); |
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235 -- FIXME don't store messages with only chat state notifications |
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236 end |
|
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237 -- TODO allow configuration of offline storage |
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238 -- TODO send error if not storing offline |
|
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239 elseif stanza.name == "iq" then |
|
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240 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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241 end |
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242 else -- user does not exist |
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243 -- 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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244 if stanza.name == "presence" then |
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245 local t = stanza.attr.type; |
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246 if t == "subscribe" or t == "probe" then |
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247 origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"})); |
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248 end |
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249 -- else ignore |
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250 else |
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251 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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252 end |
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253 end |
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254 end |
| 148 | 255 elseif origin.type == "c2s" then |
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256 -- Remote host |
| 170 | 257 local xmlns = stanza.attr.xmlns; |
| 148 | 258 --stanza.attr.xmlns = "jabber:server"; |
| 259 stanza.attr.xmlns = nil; | |
| 146 | 260 log("debug", "sending s2s stanza: %s", tostring(stanza)); |
| 170 | 261 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors |
| 262 stanza.attr.xmlns = xmlns; -- reset | |
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263 elseif origin.type == "component" or origin.type == "local" then |
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264 -- Route via s2s for components and modules |
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265 log("debug", "Routing outgoing stanza for %s to %s", origin.host, host); |
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266 send_s2s(origin.host, host, stanza); |
| 148 | 267 else |
| 268 log("warn", "received stanza from unhandled connection type: %s", origin.type); | |
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269 end |
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270 stanza.attr.to = to; -- reset |
| 30 | 271 end |
