Mercurial > prosody-hg

annotate core/stanza_router.lua @ 1412:6cfcab7cd4e7

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stanza_router: A little refactoring
author Waqas Hussain <waqas20@gmail.com>
date Thu, 25 Jun 2009 08:17:02 +0500
parents b12096b69f36
children b7e17efe433e
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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 --
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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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10
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11 local log = require "util.logger".init("stanzarouter")
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12
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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 offlinemanager = require "core.offlinemanager";
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21
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22 local modules_handle_stanza = require "core.modulemanager".handle_stanza;
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23 local component_handle_stanza = require "core.componentmanager".handle_stanza;
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24
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25 local tostring = tostring;
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26 local t_insert = table.insert;
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27 local pairs = pairs;
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28 local ipairs = ipairs;
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29
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30 local jid_split = require "util.jid".split;
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31 local jid_prepped_split = require "util.jid".prepped_split;
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32 local fire_event = prosody.events.fire_event;
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34 function core_process_stanza(origin, stanza)
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35 (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:top_tag())
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36
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37 -- Currently we guarantee every stanza to have an xmlns, should we keep this rule?
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38 if not stanza.attr.xmlns then stanza.attr.xmlns = "jabber:client"; end
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39
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40 -- TODO verify validity of stanza (as well as JID validity)
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41 if stanza.attr.type == "error" and #stanza.tags == 0 then return; end -- TODO invalid stanza, log
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42 if stanza.name == "iq" then
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43 if (stanza.attr.type == "set" or stanza.attr.type == "get") and #stanza.tags ~= 1 then
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44 origin.send(st.error_reply(stanza, "modify", "bad-request"));
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45 return;
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46 end
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47 end
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48
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49 if origin.type == "c2s" then
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50 if not origin.full_jid
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51 and not(stanza.name == "iq" and stanza.attr.type == "set" and stanza.tags[1] and stanza.tags[1].name == "bind"
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52 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then
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53 -- authenticated client isn't bound and current stanza is not a bind request
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54 origin.send(st.error_reply(stanza, "auth", "not-authorized")); -- FIXME maybe allow stanzas to account or server
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55 return;
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56 end
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57
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58 -- TODO also, stanzas should be returned to their original state before the function ends
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59 stanza.attr.from = origin.full_jid;
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60 end
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61 local to, xmlns = stanza.attr.to, stanza.attr.xmlns;
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62 local from = stanza.attr.from;
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63 local node, host, resource;
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64 local from_node, from_host, from_resource;
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65 local to_bare, from_bare;
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66 if to then
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67 if full_sessions[to] or bare_sessions[to] or hosts[to] then
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68 node, host = jid_split(to); -- TODO only the host is needed, optimize
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69 else
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70 node, host, resource = jid_prepped_split(to);
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71 if not host then
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72 log("warn", "Received stanza with invalid destination JID: %s", to);
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73 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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74 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The destination address is invalid: "..to));
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75 end
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76 return;
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77 end
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78 to_bare = node and (node.."@"..host) or host; -- bare JID
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79 if resource then to = to_bare.."/"..resource; else to = to_bare; end
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80 stanza.attr.to = to;
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81 end
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82 end
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83 if from and not origin.full_jid then
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84 -- We only stamp the 'from' on c2s stanzas, so we still need to check validity
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85 from_node, from_host, from_resource = jid_prepped_split(from);
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86 if not from_host then
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87 log("warn", "Received stanza with invalid source JID: %s", from);
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88 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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89 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The source address is invalid: "..from));
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90 end
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91 return;
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92 end
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93 from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
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94 if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end
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95 stanza.attr.from = from;
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96 end
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97
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98 --[[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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99 log("warn", "stanza recieved for a non-local server");
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100 return; -- FIXME what should we do here?
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101 end]] -- FIXME
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102
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103 if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and xmlns == "jabber:client" then
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104 if origin.type == "s2sin" and not origin.dummy then
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105 local host_status = origin.hosts[from_host];
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106 if not host_status or not host_status.authed then -- remote server trying to impersonate some other server?
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107 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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108 return; -- FIXME what should we do here? does this work with subdomains?
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109 end
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110 end
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111 core_post_stanza(origin, stanza);
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112 else
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113 local h = hosts[stanza.attr.to or origin.host or origin.to_host];
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114 if h then
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115 local event;
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116 if stanza.attr.xmlns == "jabber:client" then
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117 if stanza.name == "iq" and (stanza.attr.type == "set" or stanza.attr.type == "get") then
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118 event = "stanza/iq/"..stanza.tags[1].attr.xmlns..":"..stanza.tags[1].name;
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119 else
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120 event = "stanza/"..stanza.name;
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121 end
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122 else
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123 event = "stanza/"..stanza.attr.xmlns..":"..stanza.name;
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124 end
1262
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125 if h.events.fire_event(event, {origin = origin, stanza = stanza}) then return; end
1254
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126 end
1294
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127 if host and not hosts[host] then host = nil; end -- workaround for a Pidgin bug which sets 'to' to the SRV result
1167
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128 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
119
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129 end
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130 end
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131
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132 function core_post_stanza(origin, stanza)
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133 local to = stanza.attr.to;
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134 local node, host, resource = jid_split(to);
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135 local to_bare = node and (node.."@"..host) or host; -- bare JID
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136
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137 local to_type;
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138 if node then
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139 if resource then
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140 to_type = '/full';
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141 else
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142 to_type = '/bare';
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143 if node == origin.username and host == origin.host then
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144 stanza.attr.to = nil;
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145 end
1228
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146 end
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147 else
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148 if host then
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149 to_type = '/host';
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150 else
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151 to_type = '/bare';
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152 end
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153 end
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154
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155 local event_data = {origin=origin, stanza=stanza};
1228
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156 if origin.full_jid then -- c2s connection
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157 if hosts[origin.host].events.fire_event('pre-'..stanza.name..to_type, event_data) then return; end -- do preprocessing
1228
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158 end
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159 local h = hosts[to_bare] or hosts[host or origin.host];
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160 if h then
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161 if h.type == "component" then
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162 component_handle_stanza(origin, stanza);
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163 return;
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164 else
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165 if h.events.fire_event(stanza.name..to_type, event_data) then return; end -- do processing
1228
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166 end
1409
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167 if not modules_handle_stanza(h.host, origin, stanza) then
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diff changeset
168 if stanza.attr.xmlns == "jabber:client" and stanza.attr.type ~= "result" and stanza.attr.type ~= "error" then
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169 origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
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170 end
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171 end
145
fbb3a4ff9cf1 dialback keys now verified
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parents: 144
diff changeset
172 else
1172
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173 core_route_stanza(origin, stanza);
71
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174 end
30
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175 end
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176
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177 function core_route_stanza(origin, stanza)
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178 local node, host, resource = jid_split(stanza.attr.to);
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179 local from_node, from_host, from_resource = jid_split(stanza.attr.from);
113
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diff changeset
180
372
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181 -- Auto-detect origin if not specified
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182 origin = origin or hosts[from_host];
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183 if not origin then return false; end
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184
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185 if hosts[host] then
1406
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186 -- old stanza routing code removed
1408
9b745496b953 stanza_router: Call core_post_stanza from core_route_stanza in place of old routing code
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diff changeset
187 core_post_stanza(origin, stanza);
148
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parents: 147
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188 elseif origin.type == "c2s" then
68
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189 -- Remote host
170
e7bff9cfbb65 Minor fixes, comments
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parents: 160
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190 local xmlns = stanza.attr.xmlns;
148
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191 --stanza.attr.xmlns = "jabber:server";
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192 stanza.attr.xmlns = nil;
146
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193 log("debug", "sending s2s stanza: %s", tostring(stanza));
170
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parents: 160
diff changeset
194 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors
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diff changeset
195 stanza.attr.xmlns = xmlns; -- reset
210
e679487e2fa4 Part 2 of internal components. Should have mentioned that the previous commit was from waqas, this one from me.
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196 elseif origin.type == "component" or origin.type == "local" then
e679487e2fa4 Part 2 of internal components. Should have mentioned that the previous commit was from waqas, this one from me.
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diff changeset
197 -- Route via s2s for components and modules
1348
ffa70c0df850 stanza_router: Use stanza.attr.from's host instead of origin.host when routing stanzas to remote hosts (fixes problem with sending from node@host components)
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diff changeset
198 log("debug", "Routing outgoing stanza for %s to %s", from_host, host);
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diff changeset
199 send_s2s(from_host, host, stanza);
148
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diff changeset
200 else
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parents: 147
diff changeset
201 log("warn", "received stanza from unhandled connection type: %s", origin.type);
68
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diff changeset
202 end
113
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diff changeset
203 stanza.attr.to = to; -- reset
30
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diff changeset
204 end