prosody
1159e007cc8f
core/stanza_router.lua

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core/stanza_router.lua @ 3443:1159e007cc8f

util.sasl_cyrus: Make multi-step SASL mechanisms work correctly.
author Waqas Hussain <waqas20@gmail.com>
date Tue, 03 Aug 2010 18:20:29 +0500
parent 2951:294c359a05f5
child 3539:8bbd965267b2
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diff changeset
1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 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 local log = require "util.logger".init("stanzarouter")
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10
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11 local hosts = _G.prosody.hosts;
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12 local tostring = tostring;
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13 local st = require "util.stanza";
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14 local send_s2s = require "core.s2smanager".send_to_host;
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15 local 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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17 local jid_split = require "util.jid".split;
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18 local jid_prepped_split = require "util.jid".prepped_split;
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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
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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 -- TODO verify validity of stanza (as well as JID validity)
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27 if stanza.attr.type == "error" and #stanza.tags == 0 then return; end -- TODO invalid stanza, log
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28 if stanza.name == "iq" then
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29 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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30 if (stanza.attr.type == "set" or stanza.attr.type == "get") and (#stanza.tags ~= 1) then
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31 origin.send(st.error_reply(stanza, "modify", "bad-request"));
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32 return;
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33 end
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34 end
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35
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36 if origin.type == "c2s" and not stanza.attr.xmlns then
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37 if not origin.full_jid
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38 and not(stanza.name == "iq" and stanza.attr.type == "set" and stanza.tags[1] and stanza.tags[1].name == "bind"
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39 and stanza.tags[1].attr.xmlns == "urn:ietf:params:xml:ns:xmpp-bind") then
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40 -- authenticated client isn't bound and current stanza is not a bind request
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41 if stanza.attr.type ~= "result" and stanza.attr.type ~= "error" then
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42 origin.send(st.error_reply(stanza, "auth", "not-authorized")); -- FIXME maybe allow stanzas to account or server
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43 end
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44 return;
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45 end
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46
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47 -- TODO also, stanzas should be returned to their original state before the function ends
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48 stanza.attr.from = origin.full_jid;
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49 end
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50 local to, xmlns = stanza.attr.to, stanza.attr.xmlns;
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51 local from = stanza.attr.from;
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52 local node, host, resource;
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53 local from_node, from_host, from_resource;
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54 local to_bare, from_bare;
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55 if to then
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56 if full_sessions[to] or bare_sessions[to] or hosts[to] then
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57 node, host = jid_split(to); -- TODO only the host is needed, optimize
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58 else
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59 node, host, resource = jid_prepped_split(to);
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60 if not host then
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61 log("warn", "Received stanza with invalid destination JID: %s", to);
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62 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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63 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The destination address is invalid: "..to));
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64 end
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65 return;
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66 end
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67 to_bare = node and (node.."@"..host) or host; -- bare JID
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68 if resource then to = to_bare.."/"..resource; else to = to_bare; end
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69 stanza.attr.to = to;
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70 end
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71 end
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72 if from and not origin.full_jid then
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73 -- We only stamp the 'from' on c2s stanzas, so we still need to check validity
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74 from_node, from_host, from_resource = jid_prepped_split(from);
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75 if not from_host then
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76 log("warn", "Received stanza with invalid source JID: %s", from);
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77 if stanza.attr.type ~= "error" and stanza.attr.type ~= "result" then
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78 origin.send(st.error_reply(stanza, "modify", "jid-malformed", "The source address is invalid: "..from));
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79 end
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80 return;
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81 end
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82 from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
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83 if from_resource then from = from_bare.."/"..from_resource; else from = from_bare; end
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84 stanza.attr.from = from;
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85 end
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86
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87 --[[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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88 log("warn", "stanza recieved for a non-local server");
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89 return; -- FIXME what should we do here?
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90 end]] -- FIXME
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91
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92 if (origin.type == "s2sin" or origin.type == "c2s" or origin.type == "component") and xmlns == nil then
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93 if origin.type == "s2sin" and not origin.dummy then
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94 local host_status = origin.hosts[from_host];
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95 if not host_status or not host_status.authed then -- remote server trying to impersonate some other server?
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96 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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97 return; -- FIXME what should we do here? does this work with subdomains?
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98 end
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99 end
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100 core_post_stanza(origin, stanza, origin.full_jid);
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101 else
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102 local h = hosts[stanza.attr.to or origin.host or origin.to_host];
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103 if h then
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104 local event;
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105 if xmlns == nil then
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106 if stanza.name == "iq" and (stanza.attr.type == "set" or stanza.attr.type == "get") then
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107 event = "stanza/iq/"..stanza.tags[1].attr.xmlns..":"..stanza.tags[1].name;
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108 else
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109 event = "stanza/"..stanza.name;
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110 end
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111 else
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112 event = "stanza/"..xmlns..":"..stanza.name;
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113 end
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114 if h.events.fire_event(event, {origin = origin, stanza = stanza}) then return; end
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115 end
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116 if host and not hosts[host] then host = nil; end -- COMPAT: workaround for a Pidgin bug which sets 'to' to the SRV result
1167
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diff changeset
117 modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza);
119
b48a573608e8 Relocate presence broadcast to core_handle_stanza()
Matthew Wild <mwild1@gmail.com>
parents: 113
diff changeset
118 end
b48a573608e8 Relocate presence broadcast to core_handle_stanza()
Matthew Wild <mwild1@gmail.com>
parents: 113
diff changeset
119 end
b48a573608e8 Relocate presence broadcast to core_handle_stanza()
Matthew Wild <mwild1@gmail.com>
parents: 113
diff changeset
120
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121 function core_post_stanza(origin, stanza, preevents)
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122 local to = stanza.attr.to;
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parents: 1169
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123 local node, host, resource = jid_split(to);
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124 local to_bare = node and (node.."@"..host) or host; -- bare JID
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125
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126 local to_type, to_self;
1228
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127 if node then
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parents: 1212
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128 if resource then
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parents: 1212
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129 to_type = '/full';
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130 else
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parents: 1212
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131 to_type = '/bare';
1292
b18c1ad7fcb6 stanza_router: Remove the 'to' attribute when it's value is the bare JID of the local user sending the stanza
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132 if node == origin.username and host == origin.host then
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133 stanza.attr.to = nil;
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134 to_self = true;
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135 end
1228
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136 end
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137 else
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parents: 1212
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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 to_self = true;
1228
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143 end
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parents: 1212
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144 end
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parents: 1212
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145
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146 local event_data = {origin=origin, stanza=stanza};
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parents: 2833
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147 if preevents then -- c2s connection
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parents: 1256
diff changeset
148 if hosts[origin.host].events.fire_event('pre-'..stanza.name..to_type, event_data) then return; end -- do preprocessing
1228
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149 end
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parents: 1212
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150 local h = hosts[to_bare] or hosts[host or origin.host];
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151 if h then
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parents: 1413
diff changeset
152 if h.events.fire_event(stanza.name..to_type, event_data) then return; end -- do processing
2624
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Waqas Hussain <waqas20@gmail.com>
parents: 2530
diff changeset
153 if to_self and h.events.fire_event(stanza.name..'/self', event_data) then return; end -- do processing
1419
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154
1228
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155 if h.type == "component" then
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156 component_handle_stanza(origin, stanza);
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157 return;
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parents: 1212
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158 end
1609
95d3bcd82334 Fixed: Possible duplicate error replies for unhandled stanzas
Waqas Hussain <waqas20@gmail.com>
parents: 1523
diff changeset
159 modules_handle_stanza(h.host, origin, stanza);
145
fbb3a4ff9cf1 dialback keys now verified
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parents: 144
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160 else
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diff changeset
161 core_route_stanza(origin, stanza);
71
fbb4ef1da82e Added: Local stanza routing
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parents: 68
diff changeset
162 end
30
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163 end
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parents:
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164
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165 function core_route_stanza(origin, stanza)
1411
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parents: 1410
diff changeset
166 local node, host, resource = jid_split(stanza.attr.to);
b12096b69f36 stanza_router: Remove unused variables
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parents: 1410
diff changeset
167 local from_node, from_host, from_resource = jid_split(stanza.attr.from);
113
9026fdad1531 Working presence, presence probes and other fixes
Waqas Hussain <waqas20@gmail.com>
parents: 106
diff changeset
168
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
169 -- Auto-detect origin if not specified
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parents: 360
diff changeset
170 origin = origin or hosts[from_host];
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diff changeset
171 if not origin then return false; end
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parents: 360
diff changeset
172
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6cfcab7cd4e7 stanza_router: A little refactoring
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diff changeset
173 if hosts[host] then
1406
83c6fb3d9e73 stanza_router: Removed old routing code
Waqas Hussain <waqas20@gmail.com>
parents: 1370
diff changeset
174 -- old stanza routing code removed
1408
9b745496b953 stanza_router: Call core_post_stanza from core_route_stanza in place of old routing code
Waqas Hussain <waqas20@gmail.com>
parents: 1407
diff changeset
175 core_post_stanza(origin, stanza);
148
4c0dcd245d34 s2s works! \o/ \o/
Matthew Wild <mwild1@gmail.com>
parents: 147
diff changeset
176 elseif origin.type == "c2s" then
68
ceb7a55676a4 Beginnings of real stanza routing
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parents: 66
diff changeset
177 -- Remote host
1521
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parents: 1466
diff changeset
178 if not hosts[from_host] then
cee81a5ae949 stanza_router: Catch and log an error case which I don't think should happen (but sometimes seems to)
Matthew Wild <mwild1@gmail.com>
parents: 1466
diff changeset
179 log("error", "No hosts[from_host] (please report): %s", tostring(stanza));
cee81a5ae949 stanza_router: Catch and log an error case which I don't think should happen (but sometimes seems to)
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parents: 1466
diff changeset
180 end
cee81a5ae949 stanza_router: Catch and log an error case which I don't think should happen (but sometimes seems to)
Matthew Wild <mwild1@gmail.com>
parents: 1466
diff changeset
181 if (not hosts[from_host]) or (not hosts[from_host].disallow_s2s) then
1466
95f8024c77fc stanza_router: Check host.disallow_s2s before routing over s2sout. you can haz no s2s.
Matthew Wild <mwild1@gmail.com>
parents: 1445
diff changeset
182 local xmlns = stanza.attr.xmlns;
95f8024c77fc stanza_router: Check host.disallow_s2s before routing over s2sout. you can haz no s2s.
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parents: 1445
diff changeset
183 --stanza.attr.xmlns = "jabber:server";
95f8024c77fc stanza_router: Check host.disallow_s2s before routing over s2sout. you can haz no s2s.
Matthew Wild <mwild1@gmail.com>
parents: 1445
diff changeset
184 stanza.attr.xmlns = nil;
2132
20a52cfda988 stanza_router: Don't log full stanzas destined for s2s
Matthew Wild <mwild1@gmail.com>
parents: 1985
diff changeset
185 log("debug", "sending s2s stanza: %s", tostring(stanza.top_tag and stanza:top_tag()) or stanza);
1466
95f8024c77fc stanza_router: Check host.disallow_s2s before routing over s2sout. you can haz no s2s.
Matthew Wild <mwild1@gmail.com>
parents: 1445
diff changeset
186 send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors
95f8024c77fc stanza_router: Check host.disallow_s2s before routing over s2sout. you can haz no s2s.
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parents: 1445
diff changeset
187 stanza.attr.xmlns = xmlns; -- reset
95f8024c77fc stanza_router: Check host.disallow_s2s before routing over s2sout. you can haz no s2s.
Matthew Wild <mwild1@gmail.com>
parents: 1445
diff changeset
188 else
95f8024c77fc stanza_router: Check host.disallow_s2s before routing over s2sout. you can haz no s2s.
Matthew Wild <mwild1@gmail.com>
parents: 1445
diff changeset
189 core_route_stanza(hosts[from_host], st.error_reply(stanza, "cancel", "not-allowed", "Communication with remote servers is not allowed"));
95f8024c77fc stanza_router: Check host.disallow_s2s before routing over s2sout. you can haz no s2s.
Matthew Wild <mwild1@gmail.com>
parents: 1445
diff changeset
190 end
210
e679487e2fa4 Part 2 of internal components. Should have mentioned that the previous commit was from waqas, this one from me.
Matthew Wild <mwild1@gmail.com>
parents: 209
diff changeset
191 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.
Matthew Wild <mwild1@gmail.com>
parents: 209
diff changeset
192 -- 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)
Waqas Hussain <waqas20@gmail.com>
parents: 1307
diff changeset
193 log("debug", "Routing outgoing stanza for %s to %s", from_host, host);
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)
Waqas Hussain <waqas20@gmail.com>
parents: 1307
diff changeset
194 send_s2s(from_host, host, stanza);
148
4c0dcd245d34 s2s works! \o/ \o/
Matthew Wild <mwild1@gmail.com>
parents: 147
diff changeset
195 else
2833
a82bd02d5918 stanza_router: Log the name of unhandled stanzas (thanks bear)
Matthew Wild <mwild1@gmail.com>
parents: 1985
diff changeset
196 log("warn", "received %s stanza from unhandled connection type: %s", tostring(stanza.name), tostring(origin.type));
68
ceb7a55676a4 Beginnings of real stanza routing
Matthew Wild <mwild1@gmail.com>
parents: 66
diff changeset
197 end
30
bcf539295f2d Huge commit to:
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
198 end