prosody
a977227aa9e6
core/presencemanager.lua

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core/presencemanager.lua @ 602:a977227aa9e6

Return error when the given realm value does not match the sent realm value. Prevents impersonation of an account on one virtual host, but a user with the same username on another host.
author Waqas Hussain <waqas20@gmail.com>
date Mon, 08 Dec 2008 03:23:37 +0500
parent 565:3a49d85cafbc
child 615:4ae3e81513f3
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Matthew Wild <mwild1@gmail.com>
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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
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22 local log = require "util.logger".init("presencemanager")
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23
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24 local require = require;
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25 local pairs, ipairs = pairs, ipairs;
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26 local t_concat = table.concat;
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27 local s_find = string.find;
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28 local tonumber = tonumber;
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29
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30 local st = require "util.stanza";
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31 local jid_split = require "util.jid".split;
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32 local hosts = hosts;
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33
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34 local rostermanager = require "core.rostermanager";
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35 local sessionmanager = require "core.sessionmanager";
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36 local offlinemanager = require "core.offlinemanager";
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37
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38 module "presencemanager"
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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" 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.full_jid then -- to resource. FIXME is res.full_jid the correct check? Maybe it should be res.presence
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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 for _, msg in ipairs(offlinemanager.load(node, host) or {}) do
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100 origin.send(msg); -- FIXME do we need to modify to/from in any way?
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101 end
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102 offlinemanager.deleteAll(node, host);
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103 end
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104 origin.priority = 0;
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105 if stanza.attr.type == "unavailable" then
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106 origin.presence = nil;
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107 else
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108 origin.presence = stanza;
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109 local priority = stanza:child_with_name("priority");
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110 if priority and #priority > 0 then
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111 priority = t_concat(priority);
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112 if s_find(priority, "^[+-]?[0-9]+$") then
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113 priority = tonumber(priority);
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114 if priority < -128 then priority = -128 end
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115 if priority > 127 then priority = 127 end
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116 origin.priority = priority;
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117 end
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118 end
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119 end
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120 stanza.attr.to = nil; -- reset it
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121 else
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122 log("error", "presence recieved from client with no roster");
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123 end
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124 end
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125
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126 function send_presence_of_available_resources(user, host, jid, recipient_session, core_route_stanza)
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127 local h = hosts[host];
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128 local count = 0;
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129 if h and h.type == "local" then
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130 local u = h.sessions[user];
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131 if u then
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132 for k, session in pairs(u.sessions) do
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133 local pres = session.presence;
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134 if pres then
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135 pres.attr.to = jid;
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136 pres.attr.from = session.full_jid;
323
7c9d2cabd245 Second fix for broadcasting presence of available resources to newly approved contact
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diff changeset
137 core_route_stanza(session, pres);
321
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138 pres.attr.to = nil;
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139 pres.attr.from = nil;
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140 count = count + 1;
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141 end
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parents:
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142 end
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parents:
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143 end
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144 end
325
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145 log("info", "broadcasted presence of "..count.." resources from "..user.."@"..host.." to "..jid);
321
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146 return count;
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147 end
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parents:
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148
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149 function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza)
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150 local node, host = jid_split(from_bare);
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151 local st_from, st_to = stanza.attr.from, stanza.attr.to;
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152 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
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153 log("debug", "outbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare);
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154 if stanza.attr.type == "subscribe" then
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155 -- 1. route stanza
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156 -- 2. roster push (subscription = none, ask = subscribe)
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157 if rostermanager.set_contact_pending_out(node, host, to_bare) then
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158 rostermanager.roster_push(node, host, to_bare);
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159 end -- else file error
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160 core_route_stanza(origin, stanza);
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161 elseif stanza.attr.type == "unsubscribe" then
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parents:
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162 -- 1. route stanza
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163 -- 2. roster push (subscription = none or from)
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164 if rostermanager.unsubscribe(node, host, to_bare) then
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165 rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed?
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166 end -- else file error
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167 core_route_stanza(origin, stanza);
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168 elseif stanza.attr.type == "subscribed" then
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parents:
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169 -- 1. route stanza
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170 -- 2. roster_push ()
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171 -- 3. send_presence_of_available_resources
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172 if rostermanager.subscribed(node, host, to_bare) then
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173 rostermanager.roster_push(node, host, to_bare);
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174 end
326
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parents: 325
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175 core_route_stanza(origin, stanza);
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diff changeset
176 send_presence_of_available_resources(node, host, to_bare, origin, core_route_stanza);
321
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177 elseif stanza.attr.type == "unsubscribed" then
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parents:
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178 -- 1. route stanza
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parents:
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179 -- 2. roster push (subscription = none or to)
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parents:
diff changeset
180 if rostermanager.unsubscribed(node, host, to_bare) then
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parents:
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181 rostermanager.roster_push(node, host, to_bare);
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182 end
326
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diff changeset
183 core_route_stanza(origin, stanza);
321
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184 end
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185 stanza.attr.from, stanza.attr.to = st_from, st_to;
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186 end
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parents:
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187
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188 function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza)
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189 local node, host = jid_split(to_bare);
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190 local st_from, st_to = stanza.attr.from, stanza.attr.to;
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parents:
diff changeset
191 stanza.attr.from, stanza.attr.to = from_bare, to_bare;
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diff changeset
192 log("debug", "inbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare);
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diff changeset
193 if stanza.attr.type == "probe" then
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parents:
diff changeset
194 if rostermanager.is_contact_subscribed(node, host, from_bare) then
322
d370fea67264 Fix for broadcasting presence of available resources to newly approved contact
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parents: 321
diff changeset
195 if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then
321
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diff changeset
196 -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too)
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197 end
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parents:
diff changeset
198 else
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parents:
diff changeset
199 core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"}));
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parents:
diff changeset
200 end
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parents:
diff changeset
201 elseif stanza.attr.type == "subscribe" then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
202 if rostermanager.is_contact_subscribed(node, host, from_bare) then
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
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parents:
diff changeset
203 core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="subscribed"})); -- already subscribed
326
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parents: 325
diff changeset
204 -- Sending presence is not clearly stated in the RFC, but it seems appropriate
99a8317d1235 Send unsubscribe and unsubscribed on roster item delete, and broadcast available resources' presence in reply to pre-approved subscription request
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parents: 325
diff changeset
205 if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then
99a8317d1235 Send unsubscribe and unsubscribed on roster item delete, and broadcast available resources' presence in reply to pre-approved subscription request
Waqas Hussain <waqas20@gmail.com>
parents: 325
diff changeset
206 -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too)
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parents: 325
diff changeset
207 end
321
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
208 else
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
209 if not rostermanager.is_contact_pending_in(node, host, from_bare) then
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
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parents:
diff changeset
210 if rostermanager.set_contact_pending_in(node, host, from_bare) then
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
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parents:
diff changeset
211 sessionmanager.send_to_available_resources(node, host, stanza);
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
212 end -- TODO else return error, unable to save
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
213 end
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
214 end
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
215 elseif stanza.attr.type == "unsubscribe" then
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
216 if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
217 rostermanager.roster_push(node, host, from_bare);
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
218 end
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
219 elseif stanza.attr.type == "subscribed" then
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
220 if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
221 rostermanager.roster_push(node, host, from_bare);
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
222 end
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
223 elseif stanza.attr.type == "unsubscribed" then
326
99a8317d1235 Send unsubscribe and unsubscribed on roster item delete, and broadcast available resources' presence in reply to pre-approved subscription request
Waqas Hussain <waqas20@gmail.com>
parents: 325
diff changeset
224 if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then
321
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
225 rostermanager.roster_push(node, host, from_bare);
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
226 end
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
227 end -- discard any other type
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
228 stanza.attr.from, stanza.attr.to = st_from, st_to;
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
229 end
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Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
230
31fe15ce6fac Moved presence subscription code from stanza_router to presencemanager
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
231 return _M;