Annotate

plugins/mod_presence.lua @ 1439:f989608964ec

mod_pep: Use cached caps
author Waqas Hussain <waqas20@gmail.com>
date Sun, 28 Jun 2009 21:49:31 +0500
parent 1418:d14de6cb8b5b
child 1463:4ad920999cfa
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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 local log = module._log;
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10
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11 local require = require;
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12 local pairs, ipairs = pairs, ipairs;
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13 local t_concat = table.concat;
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14 local s_find = string.find;
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15 local tonumber = tonumber;
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16
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17 local st = require "util.stanza";
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18 local jid_split = require "util.jid".split;
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19 local jid_bare = require "util.jid".bare;
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20 local hosts = hosts;
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21
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22 local rostermanager = require "core.rostermanager";
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23 local sessionmanager = require "core.sessionmanager";
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24 local offlinemanager = require "core.offlinemanager";
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25
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26 local _core_route_stanza = core_route_stanza;
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27 local core_route_stanza;
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28 function core_route_stanza(origin, stanza)
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29 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
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30 local node, host = jid_split(stanza.attr.to);
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31 host = hosts[host];
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32 if host and host.type == "local" then
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33 handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza);
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34 return;
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35 end
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36 end
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37 _core_route_stanza(origin, stanza);
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38 end
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39
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40 function handle_presence(origin, stanza, from_bare, to_bare, core_route_stanza, inbound)
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41 local type = stanza.attr.type;
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42 if type and type ~= "unavailable" and type ~= "error" then
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43 if inbound then
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44 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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45 else
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46 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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47 end
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48 elseif not inbound and not stanza.attr.to then
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49 handle_normal_presence(origin, stanza, core_route_stanza);
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50 else
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51 core_route_stanza(origin, stanza);
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52 end
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53 end
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54
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55 local function select_top_resources(user)
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56 local priority = 0;
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57 local recipients = {};
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58 for _, session in pairs(user.sessions) do -- find resource with greatest priority
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59 if session.presence then
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60 -- TODO check active privacy list for session
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61 local p = session.priority;
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62 if p > priority then
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63 priority = p;
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64 recipients = {session};
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65 elseif p == priority then
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66 t_insert(recipients, session);
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67 end
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68 end
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69 end
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70 return recipients;
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71 end
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72 local function recalc_resource_map(origin)
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73 local user = hosts[origin.host].sessions[origin.username];
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74 user.top_resources = select_top_resources(user);
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75 if #user.top_resources == 0 then user.top_resources = nil; end
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76 end
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77
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78 function handle_normal_presence(origin, stanza, core_route_stanza)
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79 if origin.roster then
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80 for jid in pairs(origin.roster) do -- broadcast to all interested contacts
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81 local subscription = origin.roster[jid].subscription;
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82 if subscription == "both" or subscription == "from" then
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83 stanza.attr.to = jid;
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84 core_route_stanza(origin, stanza);
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85 end
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86 end
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87 local node, host = jid_split(stanza.attr.from);
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88 for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources
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89 if res ~= origin and res.presence then -- to resource
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90 stanza.attr.to = res.full_jid;
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91 core_route_stanza(origin, stanza);
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92 end
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93 end
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94 if stanza.attr.type == nil and not origin.presence then -- initial presence
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95 local probe = st.presence({from = origin.full_jid, type = "probe"});
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96 for jid in pairs(origin.roster) do -- probe all contacts we are subscribed to
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97 local subscription = origin.roster[jid].subscription;
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98 if subscription == "both" or subscription == "to" then
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99 probe.attr.to = jid;
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100 core_route_stanza(origin, probe);
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101 end
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102 end
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103 for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all available resources
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104 if res ~= origin and res.presence then
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105 res.presence.attr.to = origin.full_jid;
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106 core_route_stanza(res, res.presence);
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107 res.presence.attr.to = nil;
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108 end
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109 end
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110 if origin.roster.pending then -- resend incoming subscription requests
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111 for jid in pairs(origin.roster.pending) do
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112 origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original?
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113 end
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114 end
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115 local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host});
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116 for jid, item in pairs(origin.roster) do -- resend outgoing subscription requests
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117 if item.ask then
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118 request.attr.to = jid;
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119 core_route_stanza(origin, request);
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120 end
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121 end
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122 local offline = offlinemanager.load(node, host);
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123 if offline then
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124 for _, msg in ipairs(offline) do
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125 origin.send(msg); -- FIXME do we need to modify to/from in any way?
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126 end
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127 offlinemanager.deleteAll(node, host);
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128 end
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129 end
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130 if stanza.attr.type == "unavailable" then
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131 origin.presence = nil;
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Waqas Hussain <waqas20@gmail.com>
parents: 1287
diff changeset
132 if origin.priority then
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parents: 1287
diff changeset
133 origin.priority = nil;
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parents: 1287
diff changeset
134 recalc_resource_map(origin);
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parents: 1287
diff changeset
135 end
1009
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
136 if origin.directed then
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parents:
diff changeset
137 local old_from = stanza.attr.from;
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parents:
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138 stanza.attr.from = origin.full_jid;
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parents:
diff changeset
139 for jid in pairs(origin.directed) do
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parents:
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140 stanza.attr.to = jid;
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parents:
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141 core_route_stanza(origin, stanza);
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Waqas Hussain <waqas20@gmail.com>
parents:
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142 end
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parents:
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143 stanza.attr.from = old_from;
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parents:
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144 origin.directed = nil;
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parents:
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145 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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146 else
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parents:
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147 origin.presence = stanza;
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parents:
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148 local priority = stanza:child_with_name("priority");
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parents:
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149 if priority and #priority > 0 then
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parents:
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150 priority = t_concat(priority);
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parents:
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151 if s_find(priority, "^[+-]?[0-9]+$") then
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parents:
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152 priority = tonumber(priority);
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parents:
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153 if priority < -128 then priority = -128 end
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parents:
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154 if priority > 127 then priority = 127 end
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parents: 1287
diff changeset
155 else priority = 0; end
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parents: 1287
diff changeset
156 else priority = 0; end
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parents: 1287
diff changeset
157 if origin.priority ~= priority then
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parents: 1287
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158 origin.priority = priority;
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parents: 1287
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159 recalc_resource_map(origin);
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160 end
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parents:
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161 end
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162 stanza.attr.to = nil; -- reset it
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parents:
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163 else
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Matthew Wild <mwild1@gmail.com>
parents: 1210
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164 log("warn", "presence recieved from client with no roster");
1009
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parents:
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165 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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166 end
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parents:
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167
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parents:
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168 function send_presence_of_available_resources(user, host, jid, recipient_session, core_route_stanza)
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169 local h = hosts[host];
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170 local count = 0;
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171 if h and h.type == "local" then
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172 local u = h.sessions[user];
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173 if u then
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parents:
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174 for k, session in pairs(u.sessions) do
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175 local pres = session.presence;
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parents:
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176 if pres then
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parents:
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177 pres.attr.to = jid;
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178 core_route_stanza(session, pres);
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179 pres.attr.to = nil;
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parents:
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180 count = count + 1;
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parents:
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181 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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182 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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183 end
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parents:
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184 end
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parents: 1210
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185 log("debug", "broadcasted presence of "..count.." resources from "..user.."@"..host.." to "..jid);
1009
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186 return count;
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parents:
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187 end
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parents:
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188
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parents:
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189 function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza)
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parents:
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190 local node, host = jid_split(from_bare);
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191 local st_from, st_to = stanza.attr.from, stanza.attr.to;
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192 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
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parents:
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193 log("debug", "outbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare);
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parents:
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194 if stanza.attr.type == "subscribe" then
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parents:
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195 -- 1. route stanza
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parents:
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196 -- 2. roster push (subscription = none, ask = subscribe)
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parents:
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197 if rostermanager.set_contact_pending_out(node, host, to_bare) then
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parents:
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198 rostermanager.roster_push(node, host, to_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
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199 end -- else file error
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Waqas Hussain <waqas20@gmail.com>
parents:
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200 core_route_stanza(origin, stanza);
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Waqas Hussain <waqas20@gmail.com>
parents:
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201 elseif stanza.attr.type == "unsubscribe" then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
202 -- 1. route stanza
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Waqas Hussain <waqas20@gmail.com>
parents:
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203 -- 2. roster push (subscription = none or from)
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Waqas Hussain <waqas20@gmail.com>
parents:
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204 if rostermanager.unsubscribe(node, host, to_bare) then
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parents:
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205 rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed?
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parents:
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206 end -- else file error
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Waqas Hussain <waqas20@gmail.com>
parents:
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207 core_route_stanza(origin, stanza);
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Waqas Hussain <waqas20@gmail.com>
parents:
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208 elseif stanza.attr.type == "subscribed" then
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parents:
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209 -- 1. route stanza
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parents:
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210 -- 2. roster_push ()
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parents:
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211 -- 3. send_presence_of_available_resources
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Waqas Hussain <waqas20@gmail.com>
parents:
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212 if rostermanager.subscribed(node, host, to_bare) then
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Waqas Hussain <waqas20@gmail.com>
parents:
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213 rostermanager.roster_push(node, host, to_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
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214 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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215 core_route_stanza(origin, stanza);
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parents:
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216 send_presence_of_available_resources(node, host, to_bare, origin, core_route_stanza);
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Waqas Hussain <waqas20@gmail.com>
parents:
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217 elseif stanza.attr.type == "unsubscribed" then
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parents:
diff changeset
218 -- 1. route stanza
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
219 -- 2. roster push (subscription = none or to)
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
220 if rostermanager.unsubscribed(node, host, to_bare) then
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Waqas Hussain <waqas20@gmail.com>
parents:
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221 rostermanager.roster_push(node, host, to_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
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222 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
223 core_route_stanza(origin, stanza);
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Waqas Hussain <waqas20@gmail.com>
parents:
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224 end
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parents:
diff changeset
225 stanza.attr.from, stanza.attr.to = st_from, st_to;
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
226 end
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parents:
diff changeset
227
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parents:
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228 function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza)
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parents:
diff changeset
229 local node, host = jid_split(to_bare);
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parents:
diff changeset
230 local st_from, st_to = stanza.attr.from, stanza.attr.to;
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parents:
diff changeset
231 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
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parents:
diff changeset
232 log("debug", "inbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
233 if stanza.attr.type == "probe" then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
234 if rostermanager.is_contact_subscribed(node, host, from_bare) then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
235 if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then
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parents:
diff changeset
236 -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too)
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
237 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
238 else
a2dd83bc3afa mod_presence: initial commit
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parents:
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239 core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"}));
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parents:
diff changeset
240 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
241 elseif stanza.attr.type == "subscribe" then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
242 if rostermanager.is_contact_subscribed(node, host, from_bare) then
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parents:
diff changeset
243 core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="subscribed"})); -- already subscribed
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parents:
diff changeset
244 -- Sending presence is not clearly stated in the RFC, but it seems appropriate
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parents:
diff changeset
245 if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then
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parents:
diff changeset
246 -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too)
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
247 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
248 else
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
249 if not rostermanager.is_contact_pending_in(node, host, from_bare) then
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parents:
diff changeset
250 if rostermanager.set_contact_pending_in(node, host, from_bare) then
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Waqas Hussain <waqas20@gmail.com>
parents:
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251 sessionmanager.send_to_available_resources(node, host, stanza);
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Waqas Hussain <waqas20@gmail.com>
parents:
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252 end -- TODO else return error, unable to save
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
253 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
254 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
255 elseif stanza.attr.type == "unsubscribe" then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
256 if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
257 rostermanager.roster_push(node, host, from_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
258 end
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
259 elseif stanza.attr.type == "subscribed" then
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parents:
diff changeset
260 if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
261 rostermanager.roster_push(node, host, from_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
262 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
263 elseif stanza.attr.type == "unsubscribed" then
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parents:
diff changeset
264 if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then
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parents:
diff changeset
265 rostermanager.roster_push(node, host, from_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
266 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
267 end -- discard any other type
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parents:
diff changeset
268 stanza.attr.from, stanza.attr.to = st_from, st_to;
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
269 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
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270
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271 local function presence_handler(data)
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272 local origin, stanza = data.origin, data.stanza;
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273 local to = stanza.attr.to;
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274 local node, host = jid_split(to);
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275 local to_bare = jid_bare(to);
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276 local from_bare = jid_bare(stanza.attr.from);
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277 if origin.type == "c2s" then
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278 if 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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279 origin.directed = origin.directed or {};
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280 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to?
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281 end
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282 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
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283 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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284 elseif not to then
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285 handle_normal_presence(origin, stanza, core_route_stanza);
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286 else
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287 core_route_stanza(origin, stanza);
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288 end
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289 elseif (origin.type == "s2sin" or origin.type == "component") and hosts[host] then
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290 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
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291 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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292 else
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293 core_route_stanza(origin, stanza);
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294 end
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295 end
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296 return true;
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297 end
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298
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299 prosody.events.add_handler(module:get_host().."/presence", presence_handler);
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300 module.unload = function()
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301 prosody.events.remove_handler(module:get_host().."/presence", presence_handler);
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302 end
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303
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304 local outbound_presence_handler = function(data)
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305 -- outbound presence recieved
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306 local origin, stanza = data.origin, data.stanza;
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307
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308 local to = stanza.attr.to;
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309 if to then
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310 local t = stanza.attr.type;
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311 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes
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312 handle_outbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza);
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313 return true;
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314 end
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315
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316 local to_bare = jid_bare(to);
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317 if 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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318 origin.directed = origin.directed or {};
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319 if t then -- removing from directed presence list on sending an error or unavailable
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320 origin.directed[to] = nil; -- FIXME does it make more sense to add to_bare rather than to?
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321 else
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322 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to?
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323 end
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324 end
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325 end -- TODO maybe handle normal presence here, instead of letting it pass to incoming handlers?
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326 end
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327
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328 module:hook("pre-presence/full", outbound_presence_handler);
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329 module:hook("pre-presence/bare", outbound_presence_handler);
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330 module:hook("pre-presence/host", outbound_presence_handler);
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331
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332 module:hook("presence/bare", function(data)
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333 -- inbound presence to bare JID recieved
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334 local origin, stanza = data.origin, data.stanza;
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335
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336 local to = stanza.attr.to;
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337 local t = stanza.attr.type;
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338 if to then
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339 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to bare JID
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340 handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza);
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341 return true;
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342 end
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343
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344 local user = bare_sessions[to];
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345 if user then
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346 for _, session in pairs(user.sessions) do
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347 if session.presence then -- only send to available resources
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348 session.send(stanza);
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349 end
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350 end
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351 end -- no resources not online, discard
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352 elseif not t or t == "unavailable" then
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353 handle_normal_presence(origin, stanza, core_route_stanza);
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354 end
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355 return true;
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356 end);
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357 module:hook("presence/full", function(data)
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358 -- inbound presence to full JID recieved
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359 local origin, stanza = data.origin, data.stanza;
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360
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361 local t = stanza.attr.type;
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362 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to full JID
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363 handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to), core_route_stanza);
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364 return true;
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365 end
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366
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367 local session = full_sessions[stanza.attr.to];
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368 if session then
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369 -- TODO fire post processing event
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370 session.send(stanza);
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371 end -- resource not online, discard
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372 return true;
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373 end);