Wed, 03 Dec 2008 19:43:59 +0100
Using new LFLAGS variable.
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1 | -- Prosody IM v0.1 |
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2 | -- Copyright (C) 2008 Matthew Wild |
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3 | -- Copyright (C) 2008 Waqas Hussain |
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4 | -- |
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5 | -- This program is free software; you can redistribute it and/or |
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6 | -- modify it under the terms of the GNU General Public License |
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7 | -- as published by the Free Software Foundation; either version 2 |
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8 | -- of the License, or (at your option) any later version. |
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9 | -- |
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10 | -- This program is distributed in the hope that it will be useful, |
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11 | -- but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 | -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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13 | -- GNU General Public License for more details. |
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14 | -- |
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15 | -- You should have received a copy of the GNU General Public License |
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16 | -- along with this program; if not, write to the Free Software |
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17 | -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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18 | -- |
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19 | |
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20 | |
30 | 21 | |
22 | local log = require "util.logger".init("stanzarouter") | |
23 | ||
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24 | local st = require "util.stanza"; |
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25 | local send_s2s = require "core.s2smanager".send_to_host; |
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26 | local user_exists = require "core.usermanager".user_exists; |
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27 | |
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28 | local rostermanager = require "core.rostermanager"; |
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29 | local sessionmanager = require "core.sessionmanager"; |
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30 | local offlinemanager = require "core.offlinemanager"; |
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31 | |
145 | 32 | local s2s_verify_dialback = require "core.s2smanager".verify_dialback; |
146 | 33 | local s2s_make_authenticated = require "core.s2smanager".make_authenticated; |
191 | 34 | |
35 | local modules_handle_stanza = require "core.modulemanager".handle_stanza; | |
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36 | local component_handle_stanza = require "core.componentmanager".handle_stanza; |
191 | 37 | |
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38 | local handle_outbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_outbound_presence_subscriptions_and_probes; |
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39 | local handle_inbound_presence_subscriptions_and_probes = require "core.presencemanager".handle_inbound_presence_subscriptions_and_probes; |
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40 | local handle_normal_presence = require "core.presencemanager".handle_normal_presence; |
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41 | |
145 | 42 | local format = string.format; |
43 | local tostring = tostring; | |
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44 | local t_concat = table.concat; |
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45 | local t_insert = table.insert; |
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46 | local tonumber = tonumber; |
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47 | local s_find = string.find; |
145 | 48 | |
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49 | local jid_split = require "util.jid".split; |
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50 | local print = print; |
30 | 51 | |
52 | function core_process_stanza(origin, stanza) | |
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53 | (origin.log or log)("debug", "Received[%s]: %s", origin.type, stanza:pretty_print()) --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. |
73 | 56 | -- TODO verify validity of stanza (as well as JID validity) |
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57 | if stanza.name == "iq" and not(#stanza.tags == 1 and stanza.tags[1].attr.xmlns) then |
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58 | if stanza.attr.type == "set" or stanza.attr.type == "get" then |
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59 | error("Invalid IQ"); |
148 | 60 | elseif #stanza.tags > 1 and not(stanza.attr.type == "error" or stanza.attr.type == "result") then |
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61 | error("Invalid IQ"); |
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62 | end |
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63 | end |
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64 | |
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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 |
145 | 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 = stanza.attr.to; |
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76 | local node, host, resource = jid_split(to); |
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77 | local to_bare = node and (node.."@"..host) or host; -- bare JID |
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78 | local from = stanza.attr.from; |
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79 | local from_node, from_host, from_resource = jid_split(from); |
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80 | local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID |
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81 | |
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82 | if origin.type == "s2sin" then |
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83 | if origin.from_host ~= from_host then -- remote server trying to impersonate some other server? |
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84 | log("warn", "Received a stanza claiming to be from %s, over a conn authed for %s!", from, origin.from_host); |
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85 | return; -- FIXME what should we do here? does this work with subdomains? |
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86 | end |
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87 | end |
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 |
206 | 92 | |
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93 | -- FIXME do stanzas not of jabber:client get handled by components? |
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94 | if origin.type == "s2sin" or origin.type == "c2s" then |
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95 | if not to then |
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96 | core_handle_stanza(origin, stanza); |
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97 | elseif hosts[to] and hosts[to].type == "local" then -- directed at a local server |
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98 | core_handle_stanza(origin, stanza); |
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99 | elseif stanza.attr.xmlns and stanza.attr.xmlns ~= "jabber:client" and stanza.attr.xmlns ~= "jabber:server" then |
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100 | modules_handle_stanza(host or origin.host or origin.to_host, origin, stanza); |
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101 | elseif hosts[to_bare] and hosts[to_bare].type == "component" then -- hack to allow components to handle node@server |
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102 | component_handle_stanza(origin, stanza); |
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103 | elseif hosts[to] and hosts[to].type == "component" then -- hack to allow components to handle node@server/resource and server/resource |
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104 | component_handle_stanza(origin, stanza); |
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105 | elseif hosts[host] and hosts[host].type == "component" then -- directed at a component |
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106 | component_handle_stanza(origin, stanza); |
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107 | elseif origin.type == "c2s" and stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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108 | handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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109 | elseif origin.type ~= "c2s" and stanza.name == "iq" and not resource then -- directed at bare JID |
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110 | core_handle_stanza(origin, stanza); |
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111 | else |
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112 | core_route_stanza(origin, stanza); |
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113 | end |
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114 | else |
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115 | core_handle_stanza(origin, stanza); |
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116 | end |
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117 | end |
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118 | |
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119 | -- This function handles stanzas which are not routed any further, |
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120 | -- that is, they are handled by this server |
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121 | function core_handle_stanza(origin, stanza) |
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122 | -- Handlers |
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123 | if modules_handle_stanza(stanza.attr.to or origin.host, origin, stanza) then return; end |
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124 | if origin.type == "c2s" or origin.type == "c2s_unauthed" then |
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125 | local session = origin; |
206 | 126 | |
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127 | if stanza.name == "presence" and origin.roster then |
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128 | if stanza.attr.type == nil or stanza.attr.type == "unavailable" then |
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129 | handle_normal_presence(origin, stanza, core_route_stanza); |
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130 | else |
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131 | log("warn", "Unhandled c2s presence: %s", tostring(stanza)); |
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132 | if (stanza.attr.xmlns == "jabber:client" or stanza.attr.xmlns == "jabber:server") and stanza.attr.type ~= "error" then |
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133 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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134 | end |
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135 | end |
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136 | else |
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137 | log("warn", "Unhandled c2s stanza: %s", tostring(stanza)); |
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138 | 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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139 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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140 | end |
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141 | end -- TODO handle other stanzas |
145 | 142 | else |
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143 | log("warn", "Unhandled origin: %s", origin.type); |
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144 | 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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145 | -- s2s stanzas can get here |
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146 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME correct error? |
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147 | end |
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148 | end |
30 | 149 | end |
150 | ||
151 | function core_route_stanza(origin, stanza) | |
152 | -- Hooks | |
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153 | --- ...later |
206 | 154 | |
30 | 155 | -- Deliver |
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156 | local to = stanza.attr.to; |
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157 | local node, host, resource = jid_split(to); |
170 | 158 | local to_bare = node and (node.."@"..host) or host; -- bare JID |
159 | local from = stanza.attr.from; | |
160 | local from_node, from_host, from_resource = jid_split(from); | |
161 | local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID | |
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162 | |
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163 | -- Auto-detect origin if not specified |
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164 | origin = origin or hosts[from_host]; |
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165 | if not origin then return false; end |
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166 | |
151 | 167 | if stanza.name == "presence" and (stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable") then resource = nil; end |
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168 | |
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169 | local host_session = hosts[host] |
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170 | if host_session and host_session.type == "local" then |
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171 | -- Local host |
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172 | local user = host_session.sessions[node]; |
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173 | if user then |
72 | 174 | local res = user.sessions[resource]; |
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175 | if not res then |
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176 | -- if we get here, resource was not specified or was unavailable |
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177 | if stanza.name == "presence" then |
151 | 178 | if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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179 | handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
151 | 180 | else -- sender is available or unavailable |
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181 | for _, session in pairs(user.sessions) do -- presence broadcast to all user resources. |
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182 | if session.full_jid then -- FIXME should this be just for available resources? Do we need to check subscription? |
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183 | stanza.attr.to = session.full_jid; -- reset at the end of function |
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184 | session.send(stanza); |
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185 | end |
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186 | end |
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187 | end |
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188 | elseif stanza.name == "message" then -- select a resource to recieve message |
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189 | local priority = 0; |
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190 | local recipients = {}; |
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191 | for _, session in pairs(user.sessions) do -- find resource with greatest priority |
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192 | local p = session.priority; |
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193 | if p > priority then |
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194 | priority = p; |
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195 | recipients = {session}; |
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196 | elseif p == priority then |
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197 | t_insert(recipients, session); |
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198 | end |
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199 | end |
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200 | local count = 0; |
237 | 201 | for _, session in pairs(recipients) do |
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202 | session.send(stanza); |
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203 | count = count + 1; |
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204 | end |
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205 | if count == 0 then |
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206 | offlinemanager.store(node, host, stanza); |
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207 | -- TODO deal with storage errors |
200
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208 | end |
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209 | else |
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210 | -- TODO send IQ error |
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211 | end |
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212 | else |
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213 | -- User + resource is online... |
170 | 214 | stanza.attr.to = res.full_jid; -- reset at the end of function |
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215 | res.send(stanza); -- Yay \o/ |
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216 | end |
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217 | else |
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218 | -- user not online |
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219 | if user_exists(node, host) then |
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220 | if stanza.name == "presence" then |
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221 | if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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222 | handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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223 | else |
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224 | -- TODO send unavailable presence or unsubscribed |
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225 | end |
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226 | elseif stanza.name == "message" then |
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227 | if stanza.attr.type == "chat" or stanza.attr.type == "normal" or not stanza.attr.type then |
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228 | offlinemanager.store(node, host, stanza); |
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229 | -- FIXME don't store messages with only chat state notifications |
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230 | end |
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231 | -- TODO allow configuration of offline storage |
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232 | -- TODO send error if not storing offline |
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233 | elseif stanza.name == "iq" then |
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234 | -- TODO send IQ error |
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235 | end |
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236 | else -- user does not exist |
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237 | -- 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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238 | if stanza.name == "presence" then |
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239 | if stanza.attr.type == "probe" then |
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240 | origin.send(st.presence({from = to_bare, to = from_bare, type = "unsubscribed"})); |
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241 | end |
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242 | -- else ignore |
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243 | else |
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244 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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245 | end |
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246 | end |
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247 | end |
148 | 248 | elseif origin.type == "c2s" then |
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249 | -- Remote host |
170 | 250 | local xmlns = stanza.attr.xmlns; |
148 | 251 | --stanza.attr.xmlns = "jabber:server"; |
252 | stanza.attr.xmlns = nil; | |
146 | 253 | log("debug", "sending s2s stanza: %s", tostring(stanza)); |
170 | 254 | send_s2s(origin.host, host, stanza); -- TODO handle remote routing errors |
255 | stanza.attr.xmlns = xmlns; -- reset | |
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256 | elseif origin.type == "component" or origin.type == "local" then |
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257 | -- Route via s2s for components and modules |
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258 | log("debug", "Routing outgoing stanza for %s to %s", origin.host, host); |
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259 | send_s2s(origin.host, host, stanza); |
148 | 260 | else |
261 | log("warn", "received stanza from unhandled connection type: %s", origin.type); | |
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262 | end |
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263 | stanza.attr.to = to; -- reset |
30 | 264 | end |