Thu, 26 Mar 2009 03:55:45 +0000
util.array: Expose array.* functions, to be used for unwrapped arrays
894 | 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 | -- |
758 | 5 | -- This project is MIT/X11 licensed. Please see the |
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 | |
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10 | |
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11 | local log = require "util.logger".init("presencemanager") |
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12 | |
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13 | local require = require; |
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14 | local pairs, ipairs = pairs, ipairs; |
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15 | local t_concat = table.concat; |
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16 | local s_find = string.find; |
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17 | local tonumber = tonumber; |
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18 | |
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19 | local st = require "util.stanza"; |
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20 | local jid_split = require "util.jid".split; |
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21 | local hosts = hosts; |
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22 | |
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23 | local rostermanager = require "core.rostermanager"; |
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24 | local sessionmanager = require "core.sessionmanager"; |
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25 | local offlinemanager = require "core.offlinemanager"; |
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26 | |
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27 | module "presencemanager" |
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28 | |
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29 | function handle_presence(origin, stanza, from_bare, to_bare, core_route_stanza, inbound) |
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30 | local type = stanza.attr.type; |
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31 | if type and type ~= "unavailable" then |
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32 | if inbound then |
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33 | handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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34 | else |
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35 | handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza); |
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36 | end |
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37 | elseif not inbound and not stanza.attr.to then |
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38 | handle_normal_presence(origin, stanza, core_route_stanza); |
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39 | else |
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40 | core_route_stanza(origin, stanza); |
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41 | end |
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42 | end |
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43 | |
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44 | function handle_normal_presence(origin, stanza, core_route_stanza) |
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45 | if origin.roster then |
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46 | for jid in pairs(origin.roster) do -- broadcast to all interested contacts |
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47 | local subscription = origin.roster[jid].subscription; |
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48 | if subscription == "both" or subscription == "from" then |
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49 | stanza.attr.to = jid; |
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50 | core_route_stanza(origin, stanza); |
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51 | end |
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52 | end |
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53 | local node, host = jid_split(stanza.attr.from); |
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54 | for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast to all resources |
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55 | 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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56 | stanza.attr.to = res.full_jid; |
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57 | core_route_stanza(origin, stanza); |
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58 | end |
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59 | end |
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60 | if stanza.attr.type == nil and not origin.presence then -- initial presence |
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61 | local probe = st.presence({from = origin.full_jid, type = "probe"}); |
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62 | for jid in pairs(origin.roster) do -- probe all contacts we are subscribed to |
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63 | local subscription = origin.roster[jid].subscription; |
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64 | if subscription == "both" or subscription == "to" then |
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65 | probe.attr.to = jid; |
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66 | core_route_stanza(origin, probe); |
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67 | end |
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68 | end |
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69 | for _, res in pairs(hosts[host].sessions[node].sessions) do -- broadcast from all available resources |
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70 | if res ~= origin and res.presence then |
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71 | res.presence.attr.to = origin.full_jid; |
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72 | core_route_stanza(res, res.presence); |
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73 | res.presence.attr.to = nil; |
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74 | end |
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75 | end |
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76 | if origin.roster.pending then -- resend incoming subscription requests |
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77 | for jid in pairs(origin.roster.pending) do |
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78 | origin.send(st.presence({type="subscribe", from=jid})); -- TODO add to attribute? Use original? |
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79 | end |
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80 | end |
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81 | local request = st.presence({type="subscribe", from=origin.username.."@"..origin.host}); |
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82 | for jid, item in pairs(origin.roster) do -- resend outgoing subscription requests |
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83 | if item.ask then |
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84 | request.attr.to = jid; |
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85 | core_route_stanza(origin, request); |
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86 | end |
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87 | end |
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88 | local offline = offlinemanager.load(node, host); |
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89 | if offline then |
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90 | for _, msg in ipairs(offline) do |
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91 | origin.send(msg); -- FIXME do we need to modify to/from in any way? |
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92 | end |
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93 | offlinemanager.deleteAll(node, host); |
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94 | end |
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95 | end |
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96 | origin.priority = 0; |
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97 | if stanza.attr.type == "unavailable" then |
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98 | origin.presence = nil; |
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99 | if origin.directed then |
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100 | local old_from = stanza.attr.from; |
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101 | stanza.attr.from = origin.full_jid; |
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102 | for jid in pairs(origin.directed) do |
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103 | stanza.attr.to = jid; |
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104 | core_route_stanza(origin, stanza); |
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105 | end |
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106 | stanza.attr.from = old_from; |
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107 | origin.directed = nil; |
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108 | end |
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109 | else |
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110 | origin.presence = stanza; |
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111 | local priority = stanza:child_with_name("priority"); |
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112 | if priority and #priority > 0 then |
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113 | priority = t_concat(priority); |
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114 | if s_find(priority, "^[+-]?[0-9]+$") then |
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115 | priority = tonumber(priority); |
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116 | if priority < -128 then priority = -128 end |
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117 | if priority > 127 then priority = 127 end |
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118 | origin.priority = priority; |
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119 | end |
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120 | end |
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121 | end |
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122 | stanza.attr.to = nil; -- reset it |
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123 | else |
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124 | log("error", "presence recieved from client with no roster"); |
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125 | end |
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126 | end |
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127 | |
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128 | function send_presence_of_available_resources(user, host, jid, recipient_session, core_route_stanza) |
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129 | local h = hosts[host]; |
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130 | local count = 0; |
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131 | if h and h.type == "local" then |
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132 | local u = h.sessions[user]; |
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133 | if u then |
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134 | for k, session in pairs(u.sessions) do |
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135 | local pres = session.presence; |
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136 | if pres then |
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137 | pres.attr.to = jid; |
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138 | pres.attr.from = session.full_jid; |
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139 | core_route_stanza(session, pres); |
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140 | pres.attr.to = nil; |
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141 | pres.attr.from = nil; |
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142 | count = count + 1; |
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143 | end |
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144 | end |
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145 | end |
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146 | end |
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147 | log("info", "broadcasted presence of "..count.." resources from "..user.."@"..host.." to "..jid); |
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148 | return count; |
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149 | end |
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150 | |
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151 | function handle_outbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza) |
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152 | local node, host = jid_split(from_bare); |
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153 | local st_from, st_to = stanza.attr.from, stanza.attr.to; |
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154 | stanza.attr.from, stanza.attr.to = from_bare, to_bare; |
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155 | log("debug", "outbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare); |
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156 | if stanza.attr.type == "subscribe" then |
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157 | -- 1. route stanza |
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158 | -- 2. roster push (subscription = none, ask = subscribe) |
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159 | if rostermanager.set_contact_pending_out(node, host, to_bare) then |
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160 | rostermanager.roster_push(node, host, to_bare); |
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161 | end -- else file error |
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162 | core_route_stanza(origin, stanza); |
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163 | elseif stanza.attr.type == "unsubscribe" then |
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164 | -- 1. route stanza |
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165 | -- 2. roster push (subscription = none or from) |
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166 | if rostermanager.unsubscribe(node, host, to_bare) then |
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167 | rostermanager.roster_push(node, host, to_bare); -- FIXME do roster push when roster has in fact not changed? |
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168 | end -- else file error |
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169 | core_route_stanza(origin, stanza); |
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170 | elseif stanza.attr.type == "subscribed" then |
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171 | -- 1. route stanza |
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172 | -- 2. roster_push () |
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173 | -- 3. send_presence_of_available_resources |
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174 | if rostermanager.subscribed(node, host, to_bare) then |
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175 | rostermanager.roster_push(node, host, to_bare); |
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176 | end |
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177 | core_route_stanza(origin, stanza); |
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178 | send_presence_of_available_resources(node, host, to_bare, origin, core_route_stanza); |
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179 | elseif stanza.attr.type == "unsubscribed" then |
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180 | -- 1. route stanza |
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181 | -- 2. roster push (subscription = none or to) |
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182 | if rostermanager.unsubscribed(node, host, to_bare) then |
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183 | rostermanager.roster_push(node, host, to_bare); |
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184 | end |
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185 | core_route_stanza(origin, stanza); |
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186 | end |
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187 | stanza.attr.from, stanza.attr.to = st_from, st_to; |
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188 | end |
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189 | |
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190 | function handle_inbound_presence_subscriptions_and_probes(origin, stanza, from_bare, to_bare, core_route_stanza) |
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191 | local node, host = jid_split(to_bare); |
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192 | local st_from, st_to = stanza.attr.from, stanza.attr.to; |
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193 | stanza.attr.from, stanza.attr.to = from_bare, to_bare; |
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194 | log("debug", "inbound presence "..stanza.attr.type.." from "..from_bare.." for "..to_bare); |
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195 | if stanza.attr.type == "probe" then |
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196 | if rostermanager.is_contact_subscribed(node, host, from_bare) then |
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197 | if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then |
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198 | -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too) |
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199 | end |
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200 | else |
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201 | core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="unsubscribed"})); |
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202 | end |
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203 | elseif stanza.attr.type == "subscribe" then |
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204 | if rostermanager.is_contact_subscribed(node, host, from_bare) then |
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205 | core_route_stanza(origin, st.presence({from=to_bare, to=from_bare, type="subscribed"})); -- already subscribed |
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206 | -- Sending presence is not clearly stated in the RFC, but it seems appropriate |
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207 | if 0 == send_presence_of_available_resources(node, host, from_bare, origin, core_route_stanza) then |
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208 | -- TODO send last recieved unavailable presence (or we MAY do nothing, which is fine too) |
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209 | end |
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210 | else |
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211 | if not rostermanager.is_contact_pending_in(node, host, from_bare) then |
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212 | if rostermanager.set_contact_pending_in(node, host, from_bare) then |
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213 | sessionmanager.send_to_available_resources(node, host, stanza); |
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214 | end -- TODO else return error, unable to save |
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215 | end |
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216 | end |
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217 | elseif stanza.attr.type == "unsubscribe" then |
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218 | if rostermanager.process_inbound_unsubscribe(node, host, from_bare) then |
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219 | rostermanager.roster_push(node, host, from_bare); |
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220 | end |
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221 | elseif stanza.attr.type == "subscribed" then |
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222 | if rostermanager.process_inbound_subscription_approval(node, host, from_bare) then |
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223 | rostermanager.roster_push(node, host, from_bare); |
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224 | end |
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225 | elseif stanza.attr.type == "unsubscribed" then |
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226 | if rostermanager.process_inbound_subscription_cancellation(node, host, from_bare) then |
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227 | rostermanager.roster_push(node, host, from_bare); |
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228 | end |
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229 | end -- discard any other type |
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230 | stanza.attr.from, stanza.attr.to = st_from, st_to; |
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231 | end |
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232 | |
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233 | return _M; |