prosody
ad87f555b484
core/stanza_router.lua

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core/stanza_router.lua @ 1043:ad87f555b484

stanzarouter: Make _G.hosts local
author Matthew Wild <mwild1@gmail.com>
date Wed, 22 Apr 2009 21:33:44 +0100
parent 1011:beb039827c9f
child 1142:0e02b3301e80
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2c0b9e3c11c3 0.3->0.4
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1 -- Prosody IM v0.4
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90ce865eebd8 Update copyright notices for 2009
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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 --
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5 -- This project is MIT/X11 licensed. Please see the
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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
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11 local log = require "util.logger".init("stanzarouter")
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13 local hosts = _G.hosts;
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14
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15 local st = require "util.stanza";
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16 local send_s2s = require "core.s2smanager".send_to_host;
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17 local user_exists = require "core.usermanager".user_exists;
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18
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19 local rostermanager = require "core.rostermanager";
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20 local sessionmanager = require "core.sessionmanager";
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21 local offlinemanager = require "core.offlinemanager";
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22
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23 local s2s_verify_dialback = require "core.s2smanager".verify_dialback;
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24 local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
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26 local modules_handle_stanza = require "core.modulemanager".handle_stanza;
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27 local component_handle_stanza = require "core.componentmanager".handle_stanza;
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29 local handle_outbound_presence_subscriptions_and_probes = function()end;--require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes;
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30 local handle_inbound_presence_subscriptions_and_probes = function()end;--require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes;
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31 local handle_normal_presence = function()end;--require "core.presencemanager".handle_normal_presence;
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32
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33 local format = string.format;
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34 local tostring = tostring;
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35 local t_concat = table.concat;
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36 local t_insert = table.insert;
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37 local tonumber = tonumber;
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38 local s_find = string.find;
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39 local pairs = pairs;
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40 local ipairs = ipairs;
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41
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42 local jid_split = require "util.jid".split;
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43 local jid_prepped_split = require "util.jid".prepped_split;
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44 local print = print;
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45 local fire_event = require "core.eventmanager2".fire_event;
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46 local function checked_error_reply(origin, stanza)
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47 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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48 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error?
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49 end
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50 end
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52 function core_process_stanza(origin, stanza)
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53 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza: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.
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56 -- TODO verify validity of stanza (as well as JID validity)
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57 if stanza.attr.xmlns == "error" and #stanza.tags == 0 then return; end -- TODO invalid stanza, log
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58 if stanza.name == "iq" then
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59 if (stanza.attr.type == "set" or stanza.attr.type == "get") and #stanza.tags ~= 1 then
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60 origin.send(st.error_reply(stanza, "modify", "bad-request"));
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61 return;
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62 end
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63 end
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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
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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 from = stanza.attr.from;
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77 local node, host, resource;
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78 local from_node, from_host, from_resource;
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79 local to_bare, from_bare;
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80 if to then
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81 node, host, resource = jid_prepped_split(to);
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82 if not host then
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83 error("Invalid to JID");
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84 end
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85 to_bare = node and (node.."@"..host) or host; -- bare JID
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86 if resource then to = to_bare.."/"..resource; else to = to_bare; end
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87 stanza.attr.to = to;
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88 end
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89 if from then
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90 from_node, from_host, from_resource = jid_prepped_split(from);
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91 if not from_host then
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92 error("Invalid from JID");
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93 end
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94 from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
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95 if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end
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96 stanza.attr.from = from;
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97 end
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98
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99 --[[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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100 log("warn", "stanza recieved for a non-local server");
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101 return; -- FIXME what should we do here?
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102 end]] -- FIXME
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103
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104 -- FIXME do stanzas not of jabber:client get handled by components?
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105 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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106 local event_data = {origin=origin, stanza=stanza};
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107 fire_event(tostring(host or origin.host).."/"..stanza.name, event_data);
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108 if origin.type == "s2sin" and not origin.dummy then
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109 local host_status = origin.hosts[from_host];
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110 if not host_status or not host_status.authed then -- remote server trying to impersonate some other server?
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111 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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112 return; -- FIXME what should we do here? does this work with subdomains?
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113 end
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114 end
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115 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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116 origin.directed = origin.directed or {};
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117 origin.directed[to] = true;
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118 --t_insert(origin.directed, to); -- FIXME does it make more sense to add to_bare rather than to?
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119 end
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120 if not to then
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121 core_handle_stanza(origin, stanza);
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122 elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server
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123 core_handle_stanza(origin, stanza);
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124 elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then
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125 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
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126 elseif hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource
222
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127 component_handle_stanza(origin, stanza);
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068130563311 Changed order of checking for component hosts to check the full and bare JIDs before the hostname (at another place)
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128 elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
222
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diff changeset
129 component_handle_stanza(origin, stanza);
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130 elseif hosts[host] and hosts[host].type == "component" then -- directed at a component
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131 component_handle_stanza(origin, stanza);
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132 elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
321
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133 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
789
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diff changeset
134 elseif hosts[host] and hosts[host].type == "local" and stanza.name == "iq" and not resource then -- directed at bare JID
222
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diff changeset
135 core_handle_stanza(origin, stanza);
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diff changeset
136 else
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diff changeset
137 core_route_stanza(origin, stanza);
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138 end
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diff changeset
139 else
212
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diff changeset
140 core_handle_stanza(origin, stanza);
119
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141 end
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parents: 113
diff changeset
142 end
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parents: 113
diff changeset
143
121
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parents: 119
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144 -- This function handles stanzas which are not routed any further,
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parents: 119
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145 -- that is, they are handled by this server
119
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parents: 113
diff changeset
146 function core_handle_stanza(origin, stanza)
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parents: 113
diff changeset
147 -- Handlers
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4f4d94253547 Send host, and not the recipient's JID to module manager (fixes #53)
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parents: 642
diff changeset
148 if modules_handle_stanza(select(2, jid_split(stanza.attr.to)) or origin.host, origin, stanza) then return; end
570
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parents: 519
diff changeset
149 if origin.type == "c2s" or origin.type == "s2sin" then
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diff changeset
150 if origin.type == "c2s" then
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diff changeset
151 if stanza.name == "presence" and origin.roster then
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parents: 924
diff changeset
152 if stanza.attr.type == nil or stanza.attr.type == "unavailable" and stanza.attr.type ~= "error" then
570
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parents: 519
diff changeset
153 handle_normal_presence(origin, stanza, core_route_stanza);
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parents: 519
diff changeset
154 else
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parents: 519
diff changeset
155 log("warn", "Unhandled c2s presence: %s", tostring(stanza));
715
beec1eb7d9c6 stanza_router: Fixed error replies for unhandled stanzas
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parents: 667
diff changeset
156 checked_error_reply(origin, stanza);
570
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diff changeset
157 end
113
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diff changeset
158 else
570
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parents: 519
diff changeset
159 log("warn", "Unhandled c2s stanza: %s", tostring(stanza));
715
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parents: 667
diff changeset
160 checked_error_reply(origin, stanza);
113
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diff changeset
161 end
570
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parents: 519
diff changeset
162 else -- s2s stanzas
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parents: 519
diff changeset
163 log("warn", "Unhandled s2s stanza: %s", tostring(stanza));
715
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parents: 667
diff changeset
164 checked_error_reply(origin, stanza);
570
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diff changeset
165 end
145
fbb3a4ff9cf1 dialback keys now verified
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parents: 144
diff changeset
166 else
570
f40928c94933 Fixed: Stopped tryint to send error replies on unauthed connections
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parents: 519
diff changeset
167 log("warn", "Unhandled %s stanza: %s", origin.type, tostring(stanza));
715
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parents: 667
diff changeset
168 checked_error_reply(origin, stanza);
71
fbb4ef1da82e Added: Local stanza routing
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parents: 68
diff changeset
169 end
30
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diff changeset
170 end
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parents:
diff changeset
171
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parents:
diff changeset
172 function core_route_stanza(origin, stanza)
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parents:
diff changeset
173 -- Hooks
68
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diff changeset
174 --- ...later
207
90c387884234 A little whitespace fix
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parents: 200
diff changeset
175
30
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parents:
diff changeset
176 -- Deliver
113
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diff changeset
177 local to = stanza.attr.to;
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diff changeset
178 local node, host, resource = jid_split(to);
170
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parents: 160
diff changeset
179 local to_bare = node and (node.."@"..host) or host; -- bare JID
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parents: 160
diff changeset
180 local from = stanza.attr.from;
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parents: 160
diff changeset
181 local from_node, from_host, from_resource = jid_split(from);
e7bff9cfbb65 Minor fixes, comments
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parents: 160
diff changeset
182 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
113
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parents: 106
diff changeset
183
372
e7c1e30d06d5 Now possible to specify nil origin to core_route_stanza. Origin will be chosen as the host of the 'from' attribute on the stanza. Returns false on no such host.
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parents: 360
diff changeset
184 -- Auto-detect origin if not specified
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parents: 360
diff changeset
185 origin = origin or hosts[from_host];
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parents: 360
diff changeset
186 if not origin then return false; end
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parents: 360
diff changeset
187
781
191b9f0e5485 Fixed: Some presence stanzas from local users were not being routed correctly to components (ghosts in mod_muc)
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parents: 780
diff changeset
188 if hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource
191b9f0e5485 Fixed: Some presence stanzas from local users were not being routed correctly to components (ghosts in mod_muc)
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parents: 780
diff changeset
189 return component_handle_stanza(origin, stanza);
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parents: 780
diff changeset
190 elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server
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parents: 780
diff changeset
191 return component_handle_stanza(origin, stanza);
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diff changeset
192 elseif hosts[host] and hosts[host].type == "component" then -- directed at a component
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parents: 780
diff changeset
193 return component_handle_stanza(origin, stanza);
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parents: 780
diff changeset
194 end
191b9f0e5485 Fixed: Some presence stanzas from local users were not being routed correctly to components (ghosts in mod_muc)
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parents: 780
diff changeset
195
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parents: 924
diff changeset
196 if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error") then resource = nil; end
113
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diff changeset
197
68
ceb7a55676a4 Beginnings of real stanza routing
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diff changeset
198 local host_session = hosts[host]
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diff changeset
199 if host_session and host_session.type == "local" then
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parents: 66
diff changeset
200 -- Local host
71
fbb4ef1da82e Added: Local stanza routing
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parents: 68
diff changeset
201 local user = host_session.sessions[node];
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parents: 68
diff changeset
202 if user then
72
e78db62beebc Code cleanup
Waqas Hussain <waqas20@gmail.com>
parents: 71
diff changeset
203 local res = user.sessions[resource];
71
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diff changeset
204 if not res then
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diff changeset
205 -- if we get here, resource was not specified or was unavailable
106
f2a3d204a76a Added: presence broadcast
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parents: 105
diff changeset
206 if stanza.name == "presence" then
966
d2692d427496 Fixed: Issue with presence error routing
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parents: 924
diff changeset
207 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
321
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents: 274
diff changeset
208 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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diff changeset
209 elseif not resource then -- sender is available or unavailable or error
200
5e8b3cce798f Priority based message routing, etc
Waqas Hussain <waqas20@gmail.com>
parents: 199
diff changeset
210 for _, session in pairs(user.sessions) do -- presence broadcast to all user resources.
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parents: 199
diff changeset
211 if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription?
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parents: 199
diff changeset
212 stanza.attr.to = session.full_jid; -- reset at the end of function
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parents: 199
diff changeset
213 session.send(stanza);
113
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parents: 106
diff changeset
214 end
106
f2a3d204a76a Added: presence broadcast
Waqas Hussain <waqas20@gmail.com>
parents: 105
diff changeset
215 end
f2a3d204a76a Added: presence broadcast
Waqas Hussain <waqas20@gmail.com>
parents: 105
diff changeset
216 end
113
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parents: 106
diff changeset
217 elseif stanza.name == "message" then -- select a resource to recieve message
784
1de8a32f81e9 Change the to attribute of messages to the recipients' bare JID when the recipient/resource is offline.
Waqas Hussain <waqas20@gmail.com>
parents: 783
diff changeset
218 stanza.attr.to = to_bare;
1de8a32f81e9 Change the to attribute of messages to the recipients' bare JID when the recipient/resource is offline.
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diff changeset
219 if stanza.attr.type == 'headline' then
783
defb0119f80f Stanza router: Message to bare JID fixes
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diff changeset
220 for _, session in pairs(user.sessions) do -- find resource with greatest priority
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diff changeset
221 if session.presence and session.priority >= 0 then
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parents: 781
diff changeset
222 session.send(stanza);
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parents: 781
diff changeset
223 end
106
f2a3d204a76a Added: presence broadcast
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parents: 105
diff changeset
224 end
848
b1f3977fd140 core.stanza_router: Reply with error to groupchat messages directed at unavailable resources or offline users
Matthew Wild <mwild1@gmail.com>
parents: 789
diff changeset
225 elseif resource and stanza.attr.type == 'groupchat' then
b1f3977fd140 core.stanza_router: Reply with error to groupchat messages directed at unavailable resources or offline users
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parents: 789
diff changeset
226 -- Groupchat message sent to offline resource
b1f3977fd140 core.stanza_router: Reply with error to groupchat messages directed at unavailable resources or offline users
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parents: 789
diff changeset
227 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
783
defb0119f80f Stanza router: Message to bare JID fixes
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parents: 781
diff changeset
228 else
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diff changeset
229 local priority = 0;
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diff changeset
230 local recipients = {};
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diff changeset
231 for _, session in pairs(user.sessions) do -- find resource with greatest priority
defb0119f80f Stanza router: Message to bare JID fixes
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parents: 781
diff changeset
232 if session.presence then
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diff changeset
233 local p = session.priority;
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diff changeset
234 if p > priority then
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diff changeset
235 priority = p;
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diff changeset
236 recipients = {session};
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diff changeset
237 elseif p == priority then
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parents: 781
diff changeset
238 t_insert(recipients, session);
defb0119f80f Stanza router: Message to bare JID fixes
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diff changeset
239 end
defb0119f80f Stanza router: Message to bare JID fixes
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parents: 781
diff changeset
240 end
defb0119f80f Stanza router: Message to bare JID fixes
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parents: 781
diff changeset
241 end
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Waqas Hussain <waqas20@gmail.com>
parents: 781
diff changeset
242 local count = 0;
defb0119f80f Stanza router: Message to bare JID fixes
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parents: 781
diff changeset
243 for _, session in ipairs(recipients) do
defb0119f80f Stanza router: Message to bare JID fixes
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parents: 781
diff changeset
244 session.send(stanza);
defb0119f80f Stanza router: Message to bare JID fixes
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diff changeset
245 count = count + 1;
defb0119f80f Stanza router: Message to bare JID fixes
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diff changeset
246 end
defb0119f80f Stanza router: Message to bare JID fixes
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parents: 781
diff changeset
247 if count == 0 and (stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type) then
defb0119f80f Stanza router: Message to bare JID fixes
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parents: 781
diff changeset
248 offlinemanager.store(node, host, stanza);
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diff changeset
249 -- TODO deal with storage errors
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parents: 781
diff changeset
250 end
200
5e8b3cce798f Priority based message routing, etc
Waqas Hussain <waqas20@gmail.com>
parents: 199
diff changeset
251 end
967
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252 elseif stanza.attr.type == "get" or stanza.attr.type == "set" then
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253 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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254 end
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255 else
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256 -- User + resource is online...
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257 stanza.attr.to = res.full_jid; -- reset at the end of function
186
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258 res.send(stanza); -- Yay \o/
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259 end
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260 else
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261 -- user not online
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262 if user_exists(node, host) then
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263 if stanza.name == "presence" then
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d2692d427496 Fixed: Issue with presence error routing
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264 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
321
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
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265 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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266 else
175
5f71d290bb44 Routing code reorganization
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267 -- TODO send unavailable presence or unsubscribed
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268 end
642
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269 elseif stanza.name == "message" then -- FIXME if full jid, then send out to resources with highest priority
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1de8a32f81e9 Change the to attribute of messages to the recipients' bare JID when the recipient/resource is offline.
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270 stanza.attr.to = to_bare; -- TODO not in RFC, but seems obvious. Should discuss on the mailing list.
249
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271 if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then
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272 offlinemanager.store(node, host, stanza);
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273 -- FIXME don't store messages with only chat state notifications
848
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274 elseif stanza.attr.type == "groupchat" then
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275 local reply = st.error_reply(stanza, "cancel", "service-unavailable");
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276 reply.attr.from = to;
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277 origin.send(reply);
249
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278 end
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279 -- TODO allow configuration of offline storage
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280 -- TODO send error if not storing offline
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281 elseif stanza.name == "iq" and (stanza.attr.type == "get" or stanza.attr.type == "set") then
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282 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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283 end
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284 else -- user does not exist
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285 -- 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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286 if stanza.name == "presence" then
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287 local t = stanza.attr.type;
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288 if t == "subscribe" or t == "probe" then
186
bfa8a30ea488 sends2s -> s2s_session.send(), s2s_session.send() -> s2s_session.sends2s()
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289 origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"}));
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290 end
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291 -- else ignore
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292 elseif stanza.attr.type ~= "error" and (stanza.name ~= "iq" or stanza.attr.type ~= "result") then
186
bfa8a30ea488 sends2s -> s2s_session.send(), s2s_session.send() -> s2s_session.sends2s()
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293 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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294 end
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295 end
71
fbb4ef1da82e Added: Local stanza routing
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296 end
148
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297 elseif origin.type == "c2s" then
68
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298 -- Remote host
170
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299 local xmlns = stanza.attr.xmlns;
148
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300 --stanza.attr.xmlns = "jabber:server";
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301 stanza.attr.xmlns = nil;
146
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diff changeset
302 log("debug", "sending s2s stanza: %s", tostring(stanza));
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303 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors
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304 stanza.attr.xmlns = xmlns; -- reset
210
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305 elseif origin.type == "component" or origin.type == "local" then
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306 -- Route via s2s for components and modules
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307 log("debug", "Routing outgoing stanza for %s to %s", origin.host, host);
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diff changeset
308 send_s2s(origin.host, host, stanza);
148
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309 else
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310 log("warn", "received stanza from unhandled connection type: %s", origin.type);
68
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311 end
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312 stanza.attr.to = to; -- reset
30
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diff changeset
313 end