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plugins/mod_presence.lua @ 1279:fa00d56a9fd3

mod_presence: Handle all outbound presence stanzas
author Waqas Hussain <waqas20@gmail.com>
date Tue, 02 Jun 2009 15:53:04 +0500
parent 1278:2abf85791f29
child 1280:e360fef8882b
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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 function handle_normal_presence(origin, stanza, core_route_stanza)
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56 if origin.roster then
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57 for jid in pairs(origin.roster) do -- broadcast to all interested contacts
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58 local subscription = origin.roster[jid].subscription;
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59 if subscription == "both" or subscription == "from" then
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60 stanza.attr.to = jid;
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61 core_route_stanza(origin, stanza);
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62 end
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63 end
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64 local node, host = jid_split(stanza.attr.from);
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65 for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources
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66 if res ~= origin and res.presence then -- to resource
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67 stanza.attr.to = res.full_jid;
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68 core_route_stanza(origin, stanza);
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69 end
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70 end
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71 if stanza.attr.type == nil and not origin.presence then -- initial presence
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72 local probe = st.presence({from = origin.full_jid, type = "probe"});
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73 for jid in pairs(origin.roster) do -- probe all contacts we are subscribed to
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74 local subscription = origin.roster[jid].subscription;
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75 if subscription == "both" or subscription == "to" then
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76 probe.attr.to = jid;
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77 core_route_stanza(origin, probe);
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78 end
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79 end
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80 for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all available resources
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81 if res ~= origin and res.presence then
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82 res.presence.attr.to = origin.full_jid;
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83 core_route_stanza(res, res.presence);
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84 res.presence.attr.to = nil;
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85 end
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86 end
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87 if origin.roster.pending then -- resend incoming subscription requests
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88 for jid in pairs(origin.roster.pending) do
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89 origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original?
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90 end
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91 end
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92 local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host});
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93 for jid, item in pairs(origin.roster) do -- resend outgoing subscription requests
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94 if item.ask then
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95 request.attr.to = jid;
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96 core_route_stanza(origin, request);
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97 end
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98 end
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99 local offline = offlinemanager.load(node, host);
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100 if offline then
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101 for _, msg in ipairs(offline) do
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102 origin.send(msg); -- FIXME do we need to modify to/from in any way?
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103 end
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104 offlinemanager.deleteAll(node, host);
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105 end
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106 end
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107 origin.priority = 0;
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108 if stanza.attr.type == "unavailable" then
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109 origin.presence = nil;
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110 if origin.directed then
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111 local old_from = stanza.attr.from;
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112 stanza.attr.from = origin.full_jid;
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113 for jid in pairs(origin.directed) do
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114 stanza.attr.to = jid;
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115 core_route_stanza(origin, stanza);
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116 end
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117 stanza.attr.from = old_from;
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118 origin.directed = nil;
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119 end
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120 else
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121 origin.presence = stanza;
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122 local priority = stanza:child_with_name("priority");
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123 if priority and #priority > 0 then
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124 priority = t_concat(priority);
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125 if s_find(priority, "^[+-]?[0-9]+$") then
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126 priority = tonumber(priority);
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127 if priority < -128 then priority = -128 end
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128 if priority > 127 then priority = 127 end
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129 origin.priority = priority;
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130 end
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131 end
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132 end
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133 stanza.attr.to = nil; -- reset it
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134 else
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135 log("warn", "presence recieved from client with no roster");
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136 end
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137 end
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138
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139 function send_presence_of_available_resources(user, host, jid, recipient_session, core_route_stanza)
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140 local h = hosts[host];
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141 local count = 0;
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142 if h and h.type == "local" then
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143 local u = h.sessions[user];
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diff changeset
144 if u then
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parents:
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145 for k, session in pairs(u.sessions) do
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parents:
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146 local pres = session.presence;
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parents:
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147 if pres then
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148 pres.attr.to = jid;
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149 core_route_stanza(session, pres);
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parents:
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150 pres.attr.to = nil;
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parents:
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151 count = count + 1;
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parents:
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152 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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153 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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154 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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155 end
1211
d60e68855176 mod_presence: Lower some log levels to their correct values
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parents: 1210
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156 log("debug", "broadcasted presence of "..count.." resources from "..user.."@"..host.." to "..jid);
1009
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157 return count;
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parents:
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158 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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159
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parents:
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160 function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza)
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161 local node, host = jid_split(from_bare);
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162 local st_from, st_to = stanza.attr.from, stanza.attr.to;
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parents:
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163 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
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164 log("debug", "outbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare);
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parents:
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165 if stanza.attr.type == "subscribe" then
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166 -- 1. route stanza
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Waqas Hussain <waqas20@gmail.com>
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167 -- 2. roster push (subscription = none, ask = subscribe)
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168 if rostermanager.set_contact_pending_out(node, host, to_bare) then
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169 rostermanager.roster_push(node, host, to_bare);
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170 end -- else file error
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Waqas Hussain <waqas20@gmail.com>
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171 core_route_stanza(origin, stanza);
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172 elseif stanza.attr.type == "unsubscribe" then
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parents:
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173 -- 1. route stanza
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parents:
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174 -- 2. roster push (subscription = none or from)
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parents:
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175 if rostermanager.unsubscribe(node, host, to_bare) then
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parents:
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176 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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177 end -- else file error
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parents:
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178 core_route_stanza(origin, stanza);
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Waqas Hussain <waqas20@gmail.com>
parents:
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179 elseif stanza.attr.type == "subscribed" then
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Waqas Hussain <waqas20@gmail.com>
parents:
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180 -- 1. route stanza
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parents:
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181 -- 2. roster_push ()
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parents:
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182 -- 3. send_presence_of_available_resources
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Waqas Hussain <waqas20@gmail.com>
parents:
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183 if rostermanager.subscribed(node, host, to_bare) then
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Waqas Hussain <waqas20@gmail.com>
parents:
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184 rostermanager.roster_push(node, host, to_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
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185 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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186 core_route_stanza(origin, stanza);
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187 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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188 elseif stanza.attr.type == "unsubscribed" then
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Waqas Hussain <waqas20@gmail.com>
parents:
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189 -- 1. route stanza
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parents:
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190 -- 2. roster push (subscription = none or to)
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Waqas Hussain <waqas20@gmail.com>
parents:
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191 if rostermanager.unsubscribed(node, host, to_bare) then
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Waqas Hussain <waqas20@gmail.com>
parents:
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192 rostermanager.roster_push(node, host, to_bare);
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parents:
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193 end
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Waqas Hussain <waqas20@gmail.com>
parents:
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194 core_route_stanza(origin, stanza);
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195 end
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parents:
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196 stanza.attr.from, stanza.attr.to = st_from, st_to;
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parents:
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197 end
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parents:
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198
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parents:
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199 function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza)
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parents:
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200 local node, host = jid_split(to_bare);
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parents:
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201 local st_from, st_to = stanza.attr.from, stanza.attr.to;
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parents:
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202 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
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parents:
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203 log("debug", "inbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare);
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parents:
diff changeset
204 if stanza.attr.type == "probe" then
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parents:
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205 if rostermanager.is_contact_subscribed(node, host, from_bare) then
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parents:
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206 if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then
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parents:
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207 -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too)
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parents:
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208 end
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parents:
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209 else
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parents:
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210 core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"}));
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parents:
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211 end
a2dd83bc3afa mod_presence: initial commit
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parents:
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212 elseif stanza.attr.type == "subscribe" then
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parents:
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213 if rostermanager.is_contact_subscribed(node, host, from_bare) then
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214 core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="subscribed"})); -- already subscribed
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parents:
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215 -- Sending presence is not clearly stated in the RFC, but it seems appropriate
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parents:
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216 if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then
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parents:
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217 -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too)
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parents:
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218 end
a2dd83bc3afa mod_presence: initial commit
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parents:
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219 else
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parents:
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220 if not rostermanager.is_contact_pending_in(node, host, from_bare) then
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parents:
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221 if rostermanager.set_contact_pending_in(node, host, from_bare) then
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parents:
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222 sessionmanager.send_to_available_resources(node, host, stanza);
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parents:
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223 end -- TODO else return error, unable to save
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parents:
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224 end
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parents:
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225 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
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226 elseif stanza.attr.type == "unsubscribe" then
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parents:
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227 if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then
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parents:
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228 rostermanager.roster_push(node, host, from_bare);
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parents:
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229 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
230 elseif stanza.attr.type == "subscribed" then
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parents:
diff changeset
231 if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then
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parents:
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232 rostermanager.roster_push(node, host, from_bare);
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parents:
diff changeset
233 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
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234 elseif stanza.attr.type == "unsubscribed" then
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parents:
diff changeset
235 if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then
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parents:
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236 rostermanager.roster_push(node, host, from_bare);
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parents:
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237 end
a2dd83bc3afa mod_presence: initial commit
Waqas Hussain <waqas20@gmail.com>
parents:
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238 end -- discard any other type
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parents:
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239 stanza.attr.from, stanza.attr.to = st_from, st_to;
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parents:
diff changeset
240 end
a2dd83bc3afa mod_presence: initial commit
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parents:
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241
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parents:
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242 local function presence_handler(data)
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243 local origin, stanza = data.origin, data.stanza;
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244 local to = stanza.attr.to;
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parents:
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245 local node, host = jid_split(to);
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parents:
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246 local to_bare = jid_bare(to);
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parents:
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247 local from_bare = jid_bare(stanza.attr.from);
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parents:
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248 if origin.type == "c2s" then
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parents:
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249 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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parents:
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250 origin.directed = origin.directed or {};
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d71a8f28f18b mod_presence: Added a FIXME comment about directed presence
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parents: 1147
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251 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to?
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parents:
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252 end
1019
8d750336e517 mod_presence: Fix incorrect internal routing for probes and subscriptions
Waqas Hussain <waqas20@gmail.com>
parents: 1011
diff changeset
253 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
1009
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parents:
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254 handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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parents:
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255 elseif not to then
1011
beb039827c9f Stopped using presencemanager in stanza_router
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parents: 1009
diff changeset
256 handle_normal_presence(origin, stanza, core_route_stanza);
1009
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parents:
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257 else
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parents:
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258 core_route_stanza(origin, stanza);
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parents:
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259 end
a2dd83bc3afa mod_presence: initial commit
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parents:
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260 elseif (origin.type == "s2sin" or origin.type == "component") and hosts[host] then
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Waqas Hussain <waqas20@gmail.com>
parents: 1011
diff changeset
261 if stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" and stanza.attr.type ~= "error" then
1009
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parents:
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262 handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza);
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parents:
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263 else
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parents:
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264 core_route_stanza(origin, stanza);
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parents:
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265 end
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parents:
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266 end
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513c1d071045 mod_presence: return true from the presence handler
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parents: 1057
diff changeset
267 return true;
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parents:
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268 end
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parents:
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269
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be5fe60bd866 mod_presence: Changed to use the prosody.events object directly, rather than through eventmanager2
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parents: 1211
diff changeset
270 prosody.events.add_handler(module:get_host().."/presence", presence_handler);
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parents:
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271 module.unload = function()
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parents: 1211
diff changeset
272 prosody.events.remove_handler(module:get_host().."/presence", presence_handler);
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parents:
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273 end
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d0e80c1578e1 mod_presence: Handle outbound presence to full JIDs
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parents: 1245
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274
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parents: 1278
diff changeset
275 local outbound_presence_handler = function(data)
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parents: 1277
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276 -- outbound presence to full JID recieved
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parents: 1245
diff changeset
277 local origin, stanza = data.origin, data.stanza;
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parents: 1245
diff changeset
278
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parents: 1277
diff changeset
279 local t = stanza.attr.type;
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280 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to full JID
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281 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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282 return true;
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283 end
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284
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285 local to = stanza.attr.to;
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286 local to_bare = jid_bare(to);
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287 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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288 origin.directed = origin.directed or {};
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289 if t then -- removing from directed presence list on sending an error or unavailable
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290 origin.directed[to] = nil; -- FIXME does it make more sense to add to_bare rather than to?
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291 else
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292 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to?
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293 end
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294 end
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295 end
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296
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297 module:hook("pre-presence/full", outbound_presence_handler);
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298 module:hook("pre-presence/bare", outbound_presence_handler);
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299 module:hook("pre-presence/host", outbound_presence_handler);