Thu, 26 Mar 2009 03:55:45 +0000
util.array: Expose array.* functions, to be used for unwrapped arrays
894 | 1 | -- Prosody IM v0.4 |
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2 | -- Copyright (C) 2008-2009 Matthew Wild |
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3 | -- Copyright (C) 2008-2009 Waqas Hussain |
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4 | -- |
758 | 5 | -- This project is MIT/X11 licensed. Please see the |
6 | -- COPYING file in the source package for more information. | |
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7 | -- |
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8 | |
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9 | |
30 | 10 | |
11 | local log = require "util.logger".init("stanzarouter") | |
12 | ||
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13 | local st = require "util.stanza"; |
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14 | local send_s2s = require "core.s2smanager".send_to_host; |
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15 | local user_exists = require "core.usermanager".user_exists; |
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16 | |
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17 | local rostermanager = require "core.rostermanager"; |
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18 | local sessionmanager = require "core.sessionmanager"; |
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19 | local offlinemanager = require "core.offlinemanager"; |
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20 | |
145 | 21 | local s2s_verify_dialback = require "core.s2smanager".verify_dialback; |
146 | 22 | local s2s_make_authenticated = require "core.s2smanager".make_authenticated; |
191 | 23 | |
24 | local modules_handle_stanza = require "core.modulemanager".handle_stanza; | |
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25 | local component_handle_stanza = require "core.componentmanager".handle_stanza; |
191 | 26 | |
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27 | local handle_outbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes; |
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28 | local handle_inbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes; |
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29 | local handle_normal_presence = require "core.presencemanager".handle_normal_presence; |
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30 | |
145 | 31 | local format = string.format; |
32 | local tostring = tostring; | |
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33 | local t_concat = table.concat; |
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34 | local t_insert = table.insert; |
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35 | local tonumber = tonumber; |
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36 | local s_find = string.find; |
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37 | local pairs = pairs; |
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38 | local ipairs = ipairs; |
145 | 39 | |
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40 | local jid_split = require "util.jid".split; |
718 | 41 | local jid_prepped_split = require "util.jid".prepped_split; |
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42 | local print = print; |
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43 | local function checked_error_reply(origin, stanza) |
718 | 44 | 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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45 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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46 | end |
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47 | end |
30 | 48 | |
49 | function core_process_stanza(origin, stanza) | |
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50 | (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:top_tag()) |
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51 | |
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52 | if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end -- FIXME Hack. This should be removed when we fix namespace handling. |
73 | 53 | -- TODO verify validity of stanza (as well as JID validity) |
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54 | if stanza.name == "iq" and #stanza.tags > 1 then |
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55 | if stanza.attr.type == "set" or stanza.attr.type == "get" then |
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56 | error("Invalid IQ"); |
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57 | end |
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58 | end |
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59 | |
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60 | if origin.type == "c2s" and not origin.full_jid |
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61 | and not(stanza.name == "iq" and stanza.tags[1].name == "bind" |
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62 | and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then |
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63 | error("Client MUST bind resource after auth"); |
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64 | end |
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65 | |
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66 | -- TODO also, stanzas should be returned to their original state before the function ends |
145 | 67 | if origin.type == "c2s" then |
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68 | stanza.attr.from = origin.full_jid; |
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69 | end |
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70 | local to, xmlns = stanza.attr.to, stanza.attr.xmlns; |
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71 | local from = stanza.attr.from; |
718 | 72 | local node, host, resource; |
73 | local from_node, from_host, from_resource; | |
74 | local to_bare, from_bare; | |
75 | if to then | |
76 | node, host, resource = jid_prepped_split(to); | |
77 | if not host then | |
78 | error("Invalid to JID"); | |
79 | end | |
80 | to_bare = node and (node.."@"..host) or host; -- bare JID | |
81 | if resource then to = to_bare.."/"..resource; else to = to_bare; end | |
82 | stanza.attr.to = to; | |
83 | end | |
84 | if from then | |
85 | from_node, from_host, from_resource = jid_prepped_split(from); | |
86 | if not from_host then | |
87 | error("Invalid from JID"); | |
88 | end | |
89 | from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
90 | if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end | |
91 | stanza.attr.from = from; | |
92 | end | |
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93 | |
213 | 94 | --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us? |
95 | log("warn", "stanza recieved for a non-local server"); | |
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96 | return; -- FIXME what should we do here? |
213 | 97 | end]] -- FIXME |
206 | 98 | |
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99 | -- FIXME do stanzas not of jabber:client get handled by components? |
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100 | if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and (not xmlns or xmlns == "jabber:server" or xmlns == "jabber:client") then |
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101 | if origin.type == "s2sin" and not origin.dummy then |
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102 | local host_status = origin.hosts[from_host]; |
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103 | if not host_status or not host_status.authed then -- remote server trying to impersonate some other server? |
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104 | 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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105 | return; -- FIXME what should we do here? does this work with subdomains? |
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106 | end |
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107 | end |
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108 | 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 -- directed presence |
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109 | origin.directed = origin.directed or {}; |
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110 | origin.directed[to] = true; |
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111 | --t_insert(origin.directed, to); -- FIXME does it make more sense to add to_bare rather than to? |
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112 | end |
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113 | if not to then |
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114 | core_handle_stanza(origin, stanza); |
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115 | elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server |
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116 | core_handle_stanza(origin, stanza); |
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117 | elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then |
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118 | modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza); |
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119 | 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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120 | component_handle_stanza(origin, stanza); |
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121 | elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server |
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122 | component_handle_stanza(origin, stanza); |
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123 | elseif hosts[host] and hosts[host].type == "component" then -- directed at a component |
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124 | component_handle_stanza(origin, stanza); |
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125 | elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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126 | handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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127 | elseif hosts[host] and hosts[host].type == "local" and stanza.name == "iq" and not resource then -- directed at bare JID |
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128 | core_handle_stanza(origin, stanza); |
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129 | else |
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130 | core_route_stanza(origin, stanza); |
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131 | end |
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132 | else |
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133 | core_handle_stanza(origin, stanza); |
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134 | end |
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135 | end |
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136 | |
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137 | -- This function handles stanzas which are not routed any further, |
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138 | -- that is, they are handled by this server |
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139 | function core_handle_stanza(origin, stanza) |
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140 | -- Handlers |
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141 | if modules_handle_stanza(select(2, jid_split(stanza.attr.to)) or origin.host, origin, stanza) then return; end |
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142 | if origin.type == "c2s" or origin.type == "s2sin" then |
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143 | if origin.type == "c2s" then |
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144 | if stanza.name == "presence" and origin.roster then |
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145 | if stanza.attr.type == nil or stanza.attr.type == "unavailable" then |
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146 | handle_normal_presence(origin, stanza, core_route_stanza); |
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147 | else |
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148 | log("warn", "Unhandled c2s presence: %s", tostring(stanza)); |
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149 | checked_error_reply(origin, stanza); |
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150 | end |
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151 | else |
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152 | log("warn", "Unhandled c2s stanza: %s", tostring(stanza)); |
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153 | checked_error_reply(origin, stanza); |
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154 | end |
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155 | else -- s2s stanzas |
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156 | log("warn", "Unhandled s2s stanza: %s", tostring(stanza)); |
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157 | checked_error_reply(origin, stanza); |
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158 | end |
145 | 159 | else |
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160 | log("warn", "Unhandled %s stanza: %s", origin.type, tostring(stanza)); |
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161 | checked_error_reply(origin, stanza); |
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162 | end |
30 | 163 | end |
164 | ||
165 | function core_route_stanza(origin, stanza) | |
166 | -- Hooks | |
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167 | --- ...later |
206 | 168 | |
30 | 169 | -- Deliver |
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170 | local to = stanza.attr.to; |
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171 | local node, host, resource = jid_split(to); |
170 | 172 | local to_bare = node and (node.."@"..host) or host; -- bare JID |
173 | local from = stanza.attr.from; | |
174 | local from_node, from_host, from_resource = jid_split(from); | |
175 | local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
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176 | |
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177 | -- Auto-detect origin if not specified |
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178 | origin = origin or hosts[from_host]; |
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179 | if not origin then return false; end |
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180 | |
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181 | if hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource |
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182 | return component_handle_stanza(origin, stanza); |
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183 | elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server |
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184 | return component_handle_stanza(origin, stanza); |
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185 | elseif hosts[host] and hosts[host].type == "component" then -- directed at a component |
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186 | return component_handle_stanza(origin, stanza); |
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187 | end |
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188 | |
151 | 189 | if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end |
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190 | |
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191 | local host_session = hosts[host] |
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192 | if host_session and host_session.type == "local" then |
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193 | -- Local host |
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194 | local user = host_session.sessions[node]; |
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195 | if user then |
72 | 196 | local res = user.sessions[resource]; |
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197 | if not res then |
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198 | -- if we get here, resource was not specified or was unavailable |
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199 | if stanza.name == "presence" then |
151 | 200 | if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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201 | handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
151 | 202 | else -- sender is available or unavailable |
200
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203 | for _, session in pairs(user.sessions) do -- presence broadcast to all user resources. |
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204 | if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription? |
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205 | stanza.attr.to = session.full_jid; -- reset at the end of function |
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206 | session.send(stanza); |
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207 | end |
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208 | end |
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209 | end |
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210 | elseif stanza.name == "message" then -- select a resource to recieve message |
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211 | stanza.attr.to = to_bare; |
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212 | if stanza.attr.type == 'headline' then |
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213 | for _, session in pairs(user.sessions) do -- find resource with greatest priority |
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214 | if session.presence and session.priority >= 0 then |
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215 | session.send(stanza); |
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216 | end |
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217 | end |
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218 | elseif resource and stanza.attr.type == 'groupchat' then |
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219 | -- Groupchat message sent to offline resource |
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220 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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221 | else |
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222 | local priority = 0; |
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223 | local recipients = {}; |
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224 | for _, session in pairs(user.sessions) do -- find resource with greatest priority |
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225 | if session.presence then |
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226 | local p = session.priority; |
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227 | if p > priority then |
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228 | priority = p; |
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229 | recipients = {session}; |
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230 | elseif p == priority then |
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231 | t_insert(recipients, session); |
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232 | end |
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233 | end |
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234 | end |
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235 | local count = 0; |
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236 | for _, session in ipairs(recipients) do |
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237 | session.send(stanza); |
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238 | count = count + 1; |
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239 | end |
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240 | if count == 0 and (stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type) then |
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241 | offlinemanager.store(node, host, stanza); |
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242 | -- TODO deal with storage errors |
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243 | end |
200
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244 | end |
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245 | else |
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246 | -- TODO send IQ error |
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247 | end |
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248 | else |
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249 | -- User + resource is online... |
170 | 250 | stanza.attr.to = res.full_jid; -- reset at the end of function |
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251 | res.send(stanza); -- Yay \o/ |
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252 | end |
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253 | else |
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254 | -- user not online |
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255 | if user_exists(node, host) then |
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256 | if stanza.name == "presence" then |
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257 | if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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258 | handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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259 | else |
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260 | -- TODO send unavailable presence or unsubscribed |
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261 | end |
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262 | elseif stanza.name == "message" then -- FIXME if full jid, then send out to resources with highest priority |
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263 | stanza.attr.to = to_bare; -- TODO not in RFC, but seems obvious. Should discuss on the mailing list. |
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264 | if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then |
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265 | offlinemanager.store(node, host, stanza); |
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266 | -- FIXME don't store messages with only chat state notifications |
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267 | elseif stanza.attr.type == "groupchat" then |
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268 | local reply = st.error_reply(stanza, "cancel", "service-unavailable"); |
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269 | reply.attr.from = to; |
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270 | origin.send(reply); |
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271 | end |
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272 | -- TODO allow configuration of offline storage |
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273 | -- TODO send error if not storing offline |
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274 | elseif stanza.name == "iq" and (stanza.attr.type == "get" or stanza.attr.type == "set") then |
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275 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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276 | end |
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277 | else -- user does not exist |
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278 | -- 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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279 | if stanza.name == "presence" then |
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280 | local t = stanza.attr.type; |
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281 | if t == "subscribe" or t == "probe" then |
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282 | origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"})); |
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283 | end |
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284 | -- else ignore |
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285 | elseif stanza.attr.type ~= "error" and (stanza.name ~= "iq" or stanza.attr.type ~= "result") then |
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286 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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287 | end |
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288 | end |
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289 | end |
148 | 290 | elseif origin.type == "c2s" then |
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291 | -- Remote host |
170 | 292 | local xmlns = stanza.attr.xmlns; |
148 | 293 | --stanza.attr.xmlns = "jabber:server"; |
294 | stanza.attr.xmlns = nil; | |
146 | 295 | log("debug", "sending s2s stanza: %s", tostring(stanza)); |
170 | 296 | send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors |
297 | stanza.attr.xmlns = xmlns; -- reset | |
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298 | elseif origin.type == "component" or origin.type == "local" then |
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299 | -- Route via s2s for components and modules |
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300 | log("debug", "Routing outgoing stanza for %s to %s", origin.host, host); |
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301 | send_s2s(origin.host, host, stanza); |
148 | 302 | else |
303 | log("warn", "received stanza from unhandled connection type: %s", origin.type); | |
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304 | end |
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305 | stanza.attr.to = to; -- reset |
30 | 306 | end |