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prosody
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plugins/mod_presence.lua @ 5297:7453245f16e7
mod_presence: Put a timestamp on presence we store for probes
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 11 Jan 2013 19:38:29 +0100 (2013-01-11) |
parent | 5171:b4b302fe415c |
child | 5370:7838acadb0fa |
rev | line source |
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1 -- Prosody IM |
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2 -- Copyright (C) 2008-2010 Matthew Wild |
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3 -- Copyright (C) 2008-2010 Waqas Hussain |
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4 -- |
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5 -- This project is MIT/X11 licensed. Please see the |
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6 -- COPYING file in the source package for more information. |
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7 -- |
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8 |
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9 local log = 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, t_insert = table.concat, table.insert; |
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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 core_post_stanza = prosody.core_post_stanza; |
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18 local st = require "util.stanza"; |
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19 local jid_split = require "util.jid".split; |
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20 local jid_bare = require "util.jid".bare; |
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21 local datetime = require "util.datetime"; |
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22 local hosts = hosts; |
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23 local NULL = {}; |
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24 |
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25 local rostermanager = require "core.rostermanager"; |
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26 local sessionmanager = require "core.sessionmanager"; |
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27 |
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28 local function select_top_resources(user) |
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29 local priority = 0; |
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30 local recipients = {}; |
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31 for _, session in pairs(user.sessions) do -- find resource with greatest priority |
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32 if session.presence then |
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33 -- TODO check active privacy list for session |
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34 local p = session.priority; |
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35 if p > priority then |
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36 priority = p; |
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37 recipients = {session}; |
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38 elseif p == priority then |
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39 t_insert(recipients, session); |
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40 end |
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41 end |
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42 end |
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43 return recipients; |
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44 end |
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45 local function recalc_resource_map(user) |
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46 if user then |
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47 user.top_resources = select_top_resources(user); |
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48 if #user.top_resources == 0 then user.top_resources = nil; end |
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49 end |
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50 end |
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51 |
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52 local ignore_presence_priority = module:get_option("ignore_presence_priority"); |
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53 |
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54 function handle_normal_presence(origin, stanza) |
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55 if ignore_presence_priority then |
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56 local priority = stanza:child_with_name("priority"); |
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57 if priority and priority[1] ~= "0" then |
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58 for i=#priority.tags,1,-1 do priority.tags[i] = nil; end |
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59 for i=#priority,1,-1 do priority[i] = nil; end |
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60 priority[1] = "0"; |
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61 end |
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62 end |
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63 local priority = stanza:child_with_name("priority"); |
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64 if priority and #priority > 0 then |
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65 priority = t_concat(priority); |
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66 if s_find(priority, "^[+-]?[0-9]+$") then |
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67 priority = tonumber(priority); |
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68 if priority < -128 then priority = -128 end |
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69 if priority > 127 then priority = 127 end |
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70 else priority = 0; end |
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71 else priority = 0; end |
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72 if full_sessions[origin.full_jid] then -- if user is still connected |
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73 origin.send(stanza); -- reflect their presence back to them |
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74 end |
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75 local roster = origin.roster; |
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76 local node, host = origin.username, origin.host; |
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77 local user = bare_sessions[node.."@"..host]; |
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78 for _, res in pairs(user and user.sessions or NULL) do -- broadcast to all resources |
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79 if res ~= origin and res.presence then -- to resource |
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80 stanza.attr.to = res.full_jid; |
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81 core_post_stanza(origin, stanza, true); |
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82 end |
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83 end |
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84 for jid, item in pairs(roster) do -- broadcast to all interested contacts |
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85 if item.subscription == "both" or item.subscription == "from" then |
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86 stanza.attr.to = jid; |
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87 core_post_stanza(origin, stanza, true); |
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88 end |
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89 end |
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90 if stanza.attr.type == nil and not origin.presence then -- initial presence |
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91 origin.presence = stanza; -- FIXME repeated later |
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92 local probe = st.presence({from = origin.full_jid, type = "probe"}); |
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93 for jid, item in pairs(roster) do -- probe all contacts we are subscribed to |
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94 if item.subscription == "both" or item.subscription == "to" then |
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95 probe.attr.to = jid; |
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96 core_post_stanza(origin, probe, true); |
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97 end |
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98 end |
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99 for _, res in pairs(user and user.sessions or NULL) do -- broadcast from all available resources |
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100 if res ~= origin and res.presence then |
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101 res.presence.attr.to = origin.full_jid; |
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102 core_post_stanza(res, res.presence, true); |
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103 res.presence.attr.to = nil; |
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104 end |
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105 end |
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106 if roster.pending then -- resend incoming subscription requests |
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107 for jid in pairs(roster.pending) do |
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108 origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original? |
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109 end |
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110 end |
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111 local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host}); |
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112 for jid, item in pairs(roster) do -- resend outgoing subscription requests |
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113 if item.ask then |
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114 request.attr.to = jid; |
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115 core_post_stanza(origin, request, true); |
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116 end |
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117 end |
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118 |
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119 if priority >= 0 then |
5171 | 120 local event = { origin = origin } |
121 module:fire_event('message/offline/broadcast', event); | |
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122 end |
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123 end |
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124 if stanza.attr.type == "unavailable" then |
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125 origin.presence = nil; |
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126 if origin.priority then |
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127 origin.priority = nil; |
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128 recalc_resource_map(user); |
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129 end |
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130 if origin.directed then |
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131 for jid in pairs(origin.directed) do |
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132 stanza.attr.to = jid; |
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133 core_post_stanza(origin, stanza, true); |
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134 end |
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135 origin.directed = nil; |
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136 end |
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137 else |
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138 origin.presence = stanza; |
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139 stanza:tag("delay", { xmlns = "urn:xmpp:delay", from = host, stamp = datetime.datetime() }):up(); |
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140 if origin.priority ~= priority then |
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141 origin.priority = priority; |
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142 recalc_resource_map(user); |
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143 end |
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144 end |
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145 stanza.attr.to = nil; -- reset it |
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146 end |
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147 |
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148 function send_presence_of_available_resources(user, host, jid, recipient_session, stanza) |
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149 local h = hosts[host]; |
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150 local count = 0; |
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151 if h and h.type == "local" then |
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152 local u = h.sessions[user]; |
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153 if u then |
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154 for k, session in pairs(u.sessions) do |
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155 local pres = session.presence; |
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156 if pres then |
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157 if stanza then pres = stanza; pres.attr.from = session.full_jid; end |
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158 pres.attr.to = jid; |
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159 core_post_stanza(session, pres, true); |
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160 pres.attr.to = nil; |
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161 count = count + 1; |
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162 end |
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163 end |
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164 end |
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165 end |
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166 log("debug", "broadcasted presence of %d resources from %s@%s to %s", count, user, host, jid); |
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167 return count; |
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168 end |
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169 |
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170 function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare) |
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171 local node, host = jid_split(from_bare); |
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651139e831b1
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172 if to_bare == from_bare then return; end -- No self contacts |
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173 local st_from, st_to = stanza.attr.from, stanza.attr.to; |
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174 stanza.attr.from, stanza.attr.to = from_bare, to_bare; |
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175 log("debug", "outbound presence %s from %s for %s", stanza.attr.type, from_bare, to_bare); |
3182
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176 if stanza.attr.type == "probe" then |
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177 stanza.attr.from, stanza.attr.to = st_from, st_to; |
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178 return; |
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179 elseif stanza.attr.type == "subscribe" then |
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180 -- 1. route stanza |
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181 -- 2. roster push (subscription = none, ask = subscribe) |
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182 if rostermanager.set_contact_pending_out(node, host, to_bare) then |
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183 rostermanager.roster_push(node, host, to_bare); |
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184 end -- else file error |
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185 core_post_stanza(origin, stanza); |
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186 elseif stanza.attr.type == "unsubscribe" then |
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187 -- 1. route stanza |
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188 -- 2. roster push (subscription = none or from) |
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189 if rostermanager.unsubscribe(node, host, to_bare) then |
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190 rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed? |
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191 end -- else file error |
3198
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192 core_post_stanza(origin, stanza); |
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193 elseif stanza.attr.type == "subscribed" then |
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194 -- 1. route stanza |
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195 -- 2. roster_push () |
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196 -- 3. send_presence_of_available_resources |
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197 if rostermanager.subscribed(node, host, to_bare) then |
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198 rostermanager.roster_push(node, host, to_bare); |
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199 end |
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200 core_post_stanza(origin, stanza); |
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201 send_presence_of_available_resources(node, host, to_bare, origin); |
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202 elseif stanza.attr.type == "unsubscribed" then |
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203 -- 1. send unavailable |
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204 -- 2. route stanza |
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205 -- 3. roster push (subscription = from or both) |
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206 local success, pending_in, subscribed = rostermanager.unsubscribed(node, host, to_bare); |
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207 if success then |
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208 if subscribed then |
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209 rostermanager.roster_push(node, host, to_bare); |
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210 end |
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211 core_post_stanza(origin, stanza); |
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212 if subscribed then |
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213 send_presence_of_available_resources(node, host, to_bare, origin, st.presence({ type = "unavailable" })); |
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214 end |
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215 end |
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216 else |
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217 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type")); |
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218 end |
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219 stanza.attr.from, stanza.attr.to = st_from, st_to; |
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220 return true; |
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221 end |
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222 |
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223 function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare) |
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224 local node, host = jid_split(to_bare); |
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225 local st_from, st_to = stanza.attr.from, stanza.attr.to; |
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226 stanza.attr.from, stanza.attr.to = from_bare, to_bare; |
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227 log("debug", "inbound presence %s from %s for %s", stanza.attr.type, from_bare, to_bare); |
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228 |
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229 if stanza.attr.type == "probe" then |
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230 local result, err = rostermanager.is_contact_subscribed(node, host, from_bare); |
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231 if result then |
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232 if 0 == send_presence_of_available_resources(node, host, st_from, origin) then |
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233 core_post_stanza(hosts[host], st.presence({from=to_bare, to=st_from, type="unavailable"}), true); -- TODO send last activity |
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234 end |
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235 elseif not err then |
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236 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unsubscribed"}), true); |
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237 end |
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238 elseif stanza.attr.type == "subscribe" then |
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239 if rostermanager.is_contact_subscribed(node, host, from_bare) then |
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240 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="subscribed"}), true); -- already subscribed |
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241 -- Sending presence is not clearly stated in the RFC, but it seems appropriate |
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242 if 0 == send_presence_of_available_resources(node, host, from_bare, origin) then |
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243 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unavailable"}), true); -- TODO send last activity |
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244 end |
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245 else |
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246 core_post_stanza(hosts[host], st.presence({from=to_bare, to=from_bare, type="unavailable"}), true); -- acknowledging receipt |
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247 if not rostermanager.is_contact_pending_in(node, host, from_bare) then |
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248 if rostermanager.set_contact_pending_in(node, host, from_bare) then |
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249 sessionmanager.send_to_available_resources(node, host, stanza); |
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250 end -- TODO else return error, unable to save |
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251 end |
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252 end |
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253 elseif stanza.attr.type == "unsubscribe" then |
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254 if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then |
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255 sessionmanager.send_to_interested_resources(node, host, stanza); |
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256 rostermanager.roster_push(node, host, from_bare); |
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257 end |
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258 elseif stanza.attr.type == "subscribed" then |
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259 if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then |
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260 sessionmanager.send_to_interested_resources(node, host, stanza); |
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261 rostermanager.roster_push(node, host, from_bare); |
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262 end |
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263 elseif stanza.attr.type == "unsubscribed" then |
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264 if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then |
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265 sessionmanager.send_to_interested_resources(node, host, stanza); |
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266 rostermanager.roster_push(node, host, from_bare); |
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267 end |
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268 else |
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269 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type")); |
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270 end |
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271 stanza.attr.from, stanza.attr.to = st_from, st_to; |
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272 return true; |
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273 end |
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274 |
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275 local outbound_presence_handler = function(data) |
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276 -- outbound presence recieved |
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277 local origin, stanza = data.origin, data.stanza; |
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278 |
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279 local to = stanza.attr.to; |
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280 if to then |
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281 local t = stanza.attr.type; |
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282 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes |
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283 return handle_outbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to)); |
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284 end |
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285 |
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286 local to_bare = jid_bare(to); |
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287 local roster = origin.roster; |
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288 if roster and not(roster[to_bare] and (roster[to_bare].subscription == "both" or roster[to_bare].subscription == "from")) then -- directed presence |
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289 origin.directed = origin.directed or {}; |
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290 if t then -- removing from directed presence list on sending an error or unavailable |
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291 origin.directed[to] = nil; -- FIXME does it make more sense to add to_bare rather than to? |
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292 else |
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293 origin.directed[to] = true; -- FIXME does it make more sense to add to_bare rather than to? |
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294 end |
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295 end |
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296 end -- TODO maybe handle normal presence here, instead of letting it pass to incoming handlers? |
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297 end |
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298 |
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299 module:hook("pre-presence/full", outbound_presence_handler); |
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300 module:hook("pre-presence/bare", outbound_presence_handler); |
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301 module:hook("pre-presence/host", outbound_presence_handler); |
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302 |
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303 module:hook("presence/bare", function(data) |
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304 -- inbound presence to bare JID recieved |
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305 local origin, stanza = data.origin, data.stanza; |
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306 |
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307 local to = stanza.attr.to; |
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308 local t = stanza.attr.type; |
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309 if to then |
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310 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to bare JID |
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311 return handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to)); |
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312 end |
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313 |
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314 local user = bare_sessions[to]; |
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315 if user then |
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316 for _, session in pairs(user.sessions) do |
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317 if session.presence then -- only send to available resources |
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318 session.send(stanza); |
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319 end |
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320 end |
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321 end -- no resources not online, discard |
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322 elseif not t or t == "unavailable" then |
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323 handle_normal_presence(origin, stanza); |
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324 else |
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325 origin.send(st.error_reply(stanza, "modify", "bad-request", "Invalid presence type")); |
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326 end |
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327 return true; |
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328 end); |
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329 module:hook("presence/full", function(data) |
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330 -- inbound presence to full JID recieved |
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331 local origin, stanza = data.origin, data.stanza; |
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332 |
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333 local t = stanza.attr.type; |
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334 if t ~= nil and t ~= "unavailable" and t ~= "error" then -- check for subscriptions and probes sent to full JID |
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335 return handle_inbound_presence_subscriptions_and_probes(origin, stanza, jid_bare(stanza.attr.from), jid_bare(stanza.attr.to)); |
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336 end |
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337 |
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338 local session = full_sessions[stanza.attr.to]; |
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339 if session then |
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340 -- TODO fire post processing event |
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341 session.send(stanza); |
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342 end -- resource not online, discard |
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343 return true; |
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344 end); |
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345 module:hook("presence/host", function(data) |
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346 -- inbound presence to the host |
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347 local origin, stanza = data.origin, data.stanza; |
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348 |
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349 local from_bare = jid_bare(stanza.attr.from); |
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350 local t = stanza.attr.type; |
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351 if t == "probe" then |
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352 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id })); |
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353 elseif t == "subscribe" then |
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354 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id, type = "subscribed" })); |
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355 core_post_stanza(hosts[module.host], st.presence({ from = module.host, to = from_bare, id = stanza.attr.id })); |
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356 end |
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357 return true; |
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358 end); |
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359 |
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360 module:hook("resource-unbind", function(event) |
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361 local session, err = event.session, event.error; |
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362 -- Send unavailable presence |
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363 if session.presence then |
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364 local pres = st.presence{ type = "unavailable" }; |
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365 if err then |
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366 pres:tag("status"):text("Disconnected: "..err):up(); |
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367 end |
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368 session:dispatch_stanza(pres); |
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369 elseif session.directed then |
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370 local pres = st.presence{ type = "unavailable", from = session.full_jid }; |
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371 if err then |
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372 pres:tag("status"):text("Disconnected: "..err):up(); |
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373 end |
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374 for jid in pairs(session.directed) do |
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375 pres.attr.to = jid; |
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376 core_post_stanza(session, pres, true); |
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377 end |
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378 session.directed = nil; |
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379 end |
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380 end); |