prosody
ab49cb6d0e92
core/stanza_router.lua

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core/stanza_router.lua @ 468:ab49cb6d0e92

Moved incoming c2s presence handling from stanza_router to presencemanager
author Waqas Hussain <waqas20@gmail.com>
date Sat, 29 Nov 2008 08:25:34 +0500
parent 438:193f9dd64f17
child 519:cccd610a0ef9
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2 local log = require "util.logger".init("stanzarouter")
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4 local st = require "util.stanza";
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5 local send_s2s = require "core.s2smanager".send_to_host;
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6 local user_exists = require "core.usermanager".user_exists;
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7
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8 local rostermanager = require "core.rostermanager";
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9 local sessionmanager = require "core.sessionmanager";
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10 local offlinemanager = require "core.offlinemanager";
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12 local s2s_verify_dialback = require "core.s2smanager".verify_dialback;
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13 local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
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15 local modules_handle_stanza = require "core.modulemanager".handle_stanza;
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16 local component_handle_stanza = require "core.componentmanager".handle_stanza;
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18 local handle_outbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes;
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19 local handle_inbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes;
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20 local handle_normal_presence = require "core.presencemanager".handle_normal_presence;
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21
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22 local format = string.format;
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23 local tostring = tostring;
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24 local t_concat = table.concat;
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25 local t_insert = table.insert;
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26 local tonumber = tonumber;
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27 local s_find = string.find;
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29 local jid_split = require "util.jid".split;
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30 local print = print;
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32 function core_process_stanza(origin, stanza)
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33 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:pretty_print()) --top_tag())
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34
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35 if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end -- FIXME Hack. This should be removed when we fix namespace handling.
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36 -- TODO verify validity of stanza (as well as JID validity)
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37 if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then
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38 if stanza.attr.type == "set" or stanza.attr.type == "get" then
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39 error("Invalid IQ");
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40 elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then
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41 error("Invalid IQ");
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42 end
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43 end
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45 if origin.type == "c2s" and not origin.full_jid
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46 and not(stanza.name == "iq" and stanza.tags[1].name == "bind"
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47 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then
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48 error("Client MUST bind resource after auth");
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49 end
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50
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51 -- TODO also, stanzas should be returned to their original state before the function ends
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52 if origin.type == "c2s" then
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53 stanza.attr.from = origin.full_jid;
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54 end
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55 local to = stanza.attr.to;
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56 local node, host, resource = jid_split(to);
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57 local to_bare = node and (node.."@"..host) or host; -- bare JID
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58 local from = stanza.attr.from;
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59 local from_node, from_host, from_resource = jid_split(from);
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60 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
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62 if origin.type == "s2sin" then
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63 if origin.from_host ~= from_host then -- remote server trying to impersonate some other server?
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64 log("warn", "Received a stanza claiming to be from %s, over a conn authed for %s!", from, origin.from_host);
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65 return; -- FIXME what should we do here? does this work with subdomains?
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66 end
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67 end
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68 --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us?
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69 log("warn", "stanza recieved for a non-local server");
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70 return; -- FIXME what should we do here?
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71 end]] -- FIXME
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73 -- FIXME do stanzas not of jabber:client get handled by components?
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74 if origin.type == "s2sin" or origin.type == "c2s" then
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75 if not to then
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76 core_handle_stanza(origin, stanza);
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77 elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server
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78 core_handle_stanza(origin, stanza);
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79 elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then
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80 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
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81 elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
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82 component_handle_stanza(origin, stanza);
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83 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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84 component_handle_stanza(origin, stanza);
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85 elseif hosts[host] and hosts[host].type == "component" then -- directed at a component
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86 component_handle_stanza(origin, stanza);
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87 elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
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88 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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89 elseif origin.type ~= "c2s" and stanza.name == "iq" and not resource then -- directed at bare JID
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90 core_handle_stanza(origin, stanza);
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91 else
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92 core_route_stanza(origin, stanza);
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93 end
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94 else
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95 core_handle_stanza(origin, stanza);
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96 end
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97 end
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98
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99 -- This function handles stanzas which are not routed any further,
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100 -- that is, they are handled by this server
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101 function core_handle_stanza(origin, stanza)
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102 -- Handlers
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103 if modules_handle_stanza(stanza.attr.to or origin.host, origin, stanza) then return; end
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104 if origin.type == "c2s" or origin.type == "c2s_unauthed" then
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105 local session = origin;
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106
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107 if stanza.name == "presence" and origin.roster then
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108 if stanza.attr.type == nil or stanza.attr.type == "unavailable" then
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109 handle_normal_presence(origin, stanza, core_route_stanza);
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110 else
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111 log("warn", "Unhandled c2s presence: %s", tostring(stanza));
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112 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" then
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113 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
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114 end
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115 end
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116 else
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117 log("warn", "Unhandled c2s stanza: %s", tostring(stanza));
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118 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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119 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
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120 end
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121 end -- TODO handle other stanzas
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122 else
250
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123 log("warn", "Unhandled origin: %s", origin.type);
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124 if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
264
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125 -- s2s stanzas can get here
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126 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
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127 end
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128 end
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129 end
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130
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131 function core_route_stanza(origin, stanza)
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132 -- Hooks
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133 --- ...later
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134
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135 -- Deliver
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136 local to = stanza.attr.to;
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137 local node, host, resource = jid_split(to);
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138 local to_bare = node and (node.."@"..host) or host; -- bare JID
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139 local from = stanza.attr.from;
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140 local from_node, from_host, from_resource = jid_split(from);
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141 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
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142
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143 -- Auto-detect origin if not specified
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144 origin = origin or hosts[from_host];
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145 if not origin then return false; end
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146
151
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147 if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end
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148
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149 local host_session = hosts[host]
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150 if host_session and host_session.type == "local" then
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151 -- Local host
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152 local user = host_session.sessions[node];
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153 if user then
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154 local res = user.sessions[resource];
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155 if not res then
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156 -- if we get here, resource was not specified or was unavailable
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157 if stanza.name == "presence" then
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158 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
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159 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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160 else -- sender is available or unavailable
200
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161 for _, session in pairs(user.sessions) do -- presence broadcast to all user resources.
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162 if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription?
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163 stanza.attr.to = session.full_jid; -- reset at the end of function
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164 session.send(stanza);
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165 end
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166 end
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167 end
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168 elseif stanza.name == "message" then -- select a resource to recieve message
200
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169 local priority = 0;
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170 local recipients = {};
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171 for _, session in pairs(user.sessions) do -- find resource with greatest priority
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172 local p = session.priority;
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173 if p > priority then
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174 priority = p;
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175 recipients = {session};
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176 elseif p == priority then
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177 t_insert(recipients, session);
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178 end
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179 end
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180 local count = 0;
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181 for _, session in pairs(recipients) do
200
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182 session.send(stanza);
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183 count = count + 1;
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184 end
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185 if count == 0 then
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186 offlinemanager.store(node, host, stanza);
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187 -- TODO deal with storage errors
200
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188 end
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189 else
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190 -- TODO send IQ error
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191 end
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192 else
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193 -- User + resource is online...
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194 stanza.attr.to = res.full_jid; -- reset at the end of function
186
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195 res.send(stanza); -- Yay \o/
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196 end
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197 else
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198 -- user not online
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199 if user_exists(node, host) then
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200 if stanza.name == "presence" then
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201 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then
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202 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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203 else
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204 -- TODO send unavailable presence or unsubscribed
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205 end
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206 elseif stanza.name == "message" then
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207 if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then
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208 offlinemanager.store(node, host, stanza);
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209 -- FIXME don't store messages with only chat state notifications
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210 end
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211 -- TODO allow configuration of offline storage
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212 -- TODO send error if not storing offline
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213 elseif stanza.name == "iq" then
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214 -- TODO send IQ error
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215 end
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216 else -- user does not exist
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217 -- 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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218 if stanza.name == "presence" then
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219 if stanza.attr.type == "probe" then
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220 origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"}));
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221 end
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222 -- else ignore
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223 else
186
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224 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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225 end
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226 end
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227 end
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228 elseif origin.type == "c2s" then
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229 -- Remote host
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230 local xmlns = stanza.attr.xmlns;
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231 --stanza.attr.xmlns = "jabber:server";
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232 stanza.attr.xmlns = nil;
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233 log("debug", "sending s2s stanza: %s", tostring(stanza));
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234 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors
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235 stanza.attr.xmlns = xmlns; -- reset
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236 elseif origin.type == "component" or origin.type == "local" then
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237 -- Route via s2s for components and modules
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238 log("debug", "Routing outgoing stanza for %s to %s", origin.host, host);
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239 send_s2s(origin.host, host, stanza);
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240 else
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241 log("warn", "received stanza from unhandled connection type: %s", origin.type);
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242 end
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243 stanza.attr.to = to; -- reset
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244 end