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core/stanza_router.lua @ 2095:3256c5d00901
util.timer: Use libevent for lightweight timers if available and configured (use_libevent option)
author | Matthew Wild <mwild1@gmail.com> |
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date | Sat, 21 Nov 2009 02:40:21 +0000 |
parent | 1985:9b352c8a32e6 |
child | 2132:20a52cfda988 |
child | 2833:a82bd02d5918 |
rev | line source |
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1 -- Prosody IM |
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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 |
30 | 9 local log = require "util.logger".init("stanzarouter") |
10 | |
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11 local hosts = _G.prosody.hosts; |
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12 local tostring = tostring; |
71
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13 local st = require "util.stanza"; |
187
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14 local send_s2s = require "core.s2smanager".send_to_host; |
191 | 15 local modules_handle_stanza = require "core.modulemanager".handle_stanza; |
212
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16 local component_handle_stanza = require "core.componentmanager".handle_stanza; |
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17 local jid_split = require "util.jid".split; |
718 | 18 local jid_prepped_split = require "util.jid".prepped_split; |
30 | 19 |
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20 local full_sessions = _G.prosody.full_sessions; |
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21 local bare_sessions = _G.prosody.bare_sessions; |
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22 |
30 | 23 function core_process_stanza(origin, stanza) |
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24 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:top_tag()) |
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25 |
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26 -- Currently we guarantee every stanza to have an xmlns, should we keep this rule? |
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27 if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end |
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28 |
73 | 29 -- TODO verify validity of stanza (as well as JID validity) |
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30 if stanza.attr.type == "error" and #stanza.tags == 0 then return; end -- TODO invalid stanza, log |
924
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31 if stanza.name == "iq" then |
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32 if not stanza.attr.id then stanza.attr.id = ""; end -- COMPAT Jabiru doesn't send the id attribute on roster requests |
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33 if (stanza.attr.type == "set" or stanza.attr.type == "get") and (#stanza.tags ~= 1) then |
924
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34 origin.send(st.error_reply(stanza, "modify", "bad-request")); |
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35 return; |
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36 end |
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37 end |
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38 |
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39 if origin.type == "c2s" then |
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40 if not origin.full_jid |
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41 and not(stanza.name == "iq" and stanza.attr.type == "set" and stanza.tags[1] and stanza.tags[1].name == "bind" |
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42 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then |
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43 -- authenticated client isn't bound and current stanza is not a bind request |
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44 origin.send(st.error_reply(stanza, "auth", "not-authorized")); -- FIXME maybe allow stanzas to account or server |
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45 return; |
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46 end |
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47 |
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48 -- TODO also, stanzas should be returned to their original state before the function ends |
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49 stanza.attr.from = origin.full_jid; |
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50 end |
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51 local to, xmlns = stanza.attr.to, stanza.attr.xmlns; |
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52 local from = stanza.attr.from; |
718 | 53 local node, host, resource; |
54 local from_node, from_host, from_resource; | |
55 local to_bare, from_bare; | |
56 if to then | |
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57 if full_sessions[to] or bare_sessions[to] or hosts[to] then |
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58 node, host = jid_split(to); -- TODO only the host is needed, optimize |
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59 else |
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60 node, host, resource = jid_prepped_split(to); |
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61 if not host then |
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62 log("warn", "Received stanza with invalid destination JID: %s", to); |
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63 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then |
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64 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The destination address is invalid: "..to)); |
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65 end |
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66 return; |
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67 end |
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68 to_bare = node and (node.."@"..host) or host; -- bare JID |
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69 if resource then to = to_bare.."/"..resource; else to = to_bare; end |
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70 stanza.attr.to = to; |
718 | 71 end |
72 end | |
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73 if from and not origin.full_jid then |
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74 -- We only stamp the 'from' on c2s stanzas, so we still need to check validity |
718 | 75 from_node, from_host, from_resource = jid_prepped_split(from); |
76 if not from_host then | |
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77 log("warn", "Received stanza with invalid source JID: %s", from); |
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78 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then |
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79 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The source address is invalid: "..from)); |
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80 end |
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81 return; |
718 | 82 end |
83 from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
84 if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end | |
85 stanza.attr.from = from; | |
86 end | |
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87 |
213 | 88 --[[if to and not(hosts[to]) and not(hosts[to_bare]) and (hosts[host] and hosts[host].type ~= "local") then -- not for us? |
89 log("warn", "stanza recieved for a non-local server"); | |
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90 return; -- FIXME what should we do here? |
213 | 91 end]] -- FIXME |
207 | 92 |
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93 if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and xmlns == "jabber:client" then |
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94 if origin.type == "s2sin" and not origin.dummy then |
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95 local host_status = origin.hosts[from_host]; |
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96 if not host_status or not host_status.authed then -- remote server trying to impersonate some other server? |
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97 log("warn", "Received a stanza claiming to be from %s, over a stream authed for %s!", from_host, origin.from_host); |
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98 return; -- FIXME what should we do here? does this work with subdomains? |
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99 end |
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100 end |
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101 core_post_stanza(origin, stanza); |
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102 else |
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103 local h = hosts[stanza.attr.to or origin.host or origin.to_host]; |
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104 if h then |
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105 local event; |
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106 if stanza.attr.xmlns == "jabber:client" then |
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107 if stanza.name == "iq" and (stanza.attr.type == "set" or stanza.attr.type == "get") then |
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108 event = "stanza/iq/"..stanza.tags[1].attr.xmlns..":"..stanza.tags[1].name; |
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109 else |
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110 event = "stanza/"..stanza.name; |
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111 end |
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112 else |
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113 event = "stanza/"..stanza.attr.xmlns..":"..stanza.name; |
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114 end |
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115 if h.events.fire_event(event, {origin = origin, stanza = stanza}) then return; end |
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116 end |
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117 if host and not hosts[host] then host = nil; end -- COMPAT: workaround for a Pidgin bug which sets 'to' to the SRV result |
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118 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza); |
119
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119 end |
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120 end |
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121 |
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122 function core_post_stanza(origin, stanza) |
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123 local to = stanza.attr.to; |
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124 local node, host, resource = jid_split(to); |
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125 local to_bare = node and (node.."@"..host) or host; -- bare JID |
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126 |
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127 local to_type; |
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128 if node then |
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129 if resource then |
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130 to_type = '/full'; |
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131 else |
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132 to_type = '/bare'; |
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133 if node == origin.username and host == origin.host then |
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134 stanza.attr.to = nil; |
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135 end |
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136 end |
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137 else |
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138 if host then |
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139 to_type = '/host'; |
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140 else |
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141 to_type = '/bare'; |
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142 end |
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143 end |
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144 |
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145 local event_data = {origin=origin, stanza=stanza}; |
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146 if origin.full_jid == stanza.attr.from then -- c2s connection |
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147 if hosts[origin.host].events.fire_event('pre-'..stanza.name..to_type, event_data) then return; end -- do preprocessing |
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148 end |
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149 local h = hosts[to_bare] or hosts[host or origin.host]; |
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150 if h then |
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151 if h.events.fire_event(stanza.name..to_type, event_data) then return; end -- do processing |
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152 |
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153 if h.type == "component" then |
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154 component_handle_stanza(origin, stanza); |
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155 return; |
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156 end |
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157 modules_handle_stanza(h.host, origin, stanza); |
145 | 158 else |
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159 core_route_stanza(origin, stanza); |
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160 end |
30 | 161 end |
162 | |
163 function core_route_stanza(origin, stanza) | |
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164 local node, host, resource = jid_split(stanza.attr.to); |
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165 local from_node, from_host, from_resource = jid_split(stanza.attr.from); |
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166 |
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167 -- Auto-detect origin if not specified |
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168 origin = origin or hosts[from_host]; |
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169 if not origin then return false; end |
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170 |
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171 if hosts[host] then |
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172 -- old stanza routing code removed |
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173 core_post_stanza(origin, stanza); |
148 | 174 elseif origin.type == "c2s" then |
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175 -- Remote host |
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176 if not hosts[from_host] then |
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177 log("error", "No hosts[from_host] (please report): %s", tostring(stanza)); |
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178 end |
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179 if (not hosts[from_host]) or (not hosts[from_host].disallow_s2s) then |
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180 local xmlns = stanza.attr.xmlns; |
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181 --stanza.attr.xmlns = "jabber:server"; |
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182 stanza.attr.xmlns = nil; |
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183 log("debug", "sending s2s stanza: %s", tostring(stanza)); |
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184 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors |
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185 stanza.attr.xmlns = xmlns; -- reset |
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186 else |
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187 core_route_stanza(hosts[from_host], st.error_reply(stanza, "cancel", "not-allowed", "Communication with remote servers is not allowed")); |
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188 end |
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189 elseif origin.type == "component" or origin.type == "local" then |
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190 -- Route via s2s for components and modules |
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191 log("debug", "Routing outgoing stanza for %s to %s", from_host, host); |
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192 send_s2s(from_host, host, stanza); |
148 | 193 else |
194 log("warn", "received stanza from unhandled connection type: %s", origin.type); | |
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195 end |
30 | 196 end |