prosody
b1885732e979
core/rostermanager.lua

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core/rostermanager.lua @ 758:b1885732e979

GPL->MIT!
author Matthew Wild <mwild1@gmail.com>
date Fri, 30 Jan 2009 17:22:56 +0000
parent 615:4ae3e81513f3
child 759:5cccfb5da6cb
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1 -- Prosody IM v0.2
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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 --
758
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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
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10
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12 local log = require "util.logger".init("rostermanager");
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13
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14 local setmetatable = setmetatable;
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15 local format = string.format;
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16 local loadfile, setfenv, pcall = loadfile, setfenv, pcall;
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17 local pairs, ipairs = pairs, ipairs;
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18
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19 local hosts = hosts;
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20
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21 local datamanager = require "util.datamanager"
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22 local st = require "util.stanza";
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23
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24 module "rostermanager"
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25
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26 function add_to_roster(session, jid, item)
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27 if session.roster then
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28 local old_item = session.roster[jid];
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29 session.roster[jid] = item;
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30 if save_roster(session.username, session.host) then
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31 return true;
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32 else
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33 session.roster[jid] = old_item;
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34 return nil, "wait", "internal-server-error", "Unable to save roster";
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35 end
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36 else
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37 return nil, "auth", "not-authorized", "Session's roster not loaded";
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38 end
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39 end
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40
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41 function remove_from_roster(session, jid)
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42 if session.roster then
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43 local old_item = session.roster[jid];
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44 session.roster[jid] = nil;
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45 if save_roster(session.username, session.host) then
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46 return true;
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47 else
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48 session.roster[jid] = old_item;
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49 return nil, "wait", "internal-server-error", "Unable to save roster";
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50 end
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51 else
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52 return nil, "auth", "not-authorized", "Session's roster not loaded";
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53 end
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54 end
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55
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56 function roster_push(username, host, jid)
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57 if jid ~= "pending" and hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster then
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58 local item = hosts[host].sessions[username].roster[jid];
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59 local stanza = st.iq({type="set"});
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60 stanza:tag("query", {xmlns = "jabber:iq:roster"});
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61 if item then
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62 stanza:tag("item", {jid = jid, subscription = item.subscription, name = item.name, ask = item.ask});
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63 for group in pairs(item.groups) do
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64 stanza:tag("group"):text(group):up();
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65 end
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66 else
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67 stanza:tag("item", {jid = jid, subscription = "remove"});
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68 end
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69 stanza:up(); -- move out from item
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70 stanza:up(); -- move out from stanza
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71 -- stanza ready
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72 for _, session in pairs(hosts[host].sessions[username].sessions) do
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73 if session.interested then
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74 -- FIXME do we need to set stanza.attr.to?
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75 session.send(stanza);
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76 end
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77 end
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78 end
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79 end
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80
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81 function load_roster(username, host)
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82 log("debug", "load_roster: asked for: "..username.."@"..host);
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83 if hosts[host] and hosts[host].sessions[username] then
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84 local roster = hosts[host].sessions[username].roster;
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85 if not roster then
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86 log("debug", "load_roster: loading for new user: "..username.."@"..host);
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87 roster = datamanager.load(username, host, "roster") or {};
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88 hosts[host].sessions[username].roster = roster;
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89 end
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90 return roster;
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91 end
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92 -- Attempt to load roster for non-loaded user
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93 log("debug", "load_roster: loading for offline user: "..username.."@"..host);
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94 return datamanager.load(username, host, "roster") or {};
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95 end
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96
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97 function save_roster(username, host)
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98 log("debug", "save_roster: saving roster for "..username.."@"..host);
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99 if hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster then
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100 return datamanager.store(username, host, "roster", hosts[host].sessions[username].roster);
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101 end
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102 return nil;
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103 end
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104
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105 function process_inbound_subscription_approval(username, host, jid)
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106 local roster = load_roster(username, host);
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107 local item = roster[jid];
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108 if item and item.ask then
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109 if item.subscription == "none" then
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110 item.subscription = "to";
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111 else -- subscription == from
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112 item.subscription = "both";
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113 end
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114 item.ask = nil;
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115 return datamanager.store(username, host, "roster", roster);
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116 end
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117 end
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118
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119 function process_inbound_subscription_cancellation(username, host, jid)
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120 local roster = load_roster(username, host);
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121 local item = roster[jid];
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122 local changed = nil;
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123 if is_contact_pending_out(username, host, jid) then
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124 item.ask = nil;
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125 changed = true;
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126 end
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127 if item then
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128 if item.subscription == "to" then
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129 item.subscription = "none";
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130 changed = true;
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131 elseif item.subscription == "both" then
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132 item.subscription = "from";
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133 changed = true;
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134 end
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135 end
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136 if changed then
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137 return datamanager.store(username, host, "roster", roster);
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138 end
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139 end
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140
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141 function process_inbound_unsubscribe(username, host, jid)
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142 local roster = load_roster(username, host);
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143 local item = roster[jid];
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144 local changed = nil;
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145 if is_contact_pending_in(username, host, jid) then
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146 roster.pending[jid] = nil; -- TODO maybe delete roster.pending if empty?
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147 changed = true;
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148 end
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149 if item then
173
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150 if item.subscription == "from" then
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151 item.subscription = "none";
176
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152 changed = true;
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153 elseif item.subscription == "both" then
173
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154 item.subscription = "to";
176
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155 changed = true;
173
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156 end
176
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157 end
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158 if changed then
173
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159 return datamanager.store(username, host, "roster", roster);
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160 end
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161 end
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162
174
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163 function is_contact_subscribed(username, host, jid)
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164 local roster = load_roster(username, host);
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165 local item = roster[jid];
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166 return item and (item.subscription == "from" or item.subscription == "both");
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167 end
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168
176
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169 function is_contact_pending_in(username, host, jid)
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170 local roster = load_roster(username, host);
177
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171 return roster.pending and roster.pending[jid];
176
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172 end
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173 function set_contact_pending_in(username, host, jid, pending)
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174 local roster = load_roster(username, host);
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175 local item = roster[jid];
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176 if item and (item.subscription == "from" or item.subscription == "both") then
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177 return; -- false
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178 end
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179 if not roster.pending then roster.pending = {}; end
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180 roster.pending[jid] = true;
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181 return datamanager.store(username, host, "roster", roster);
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182 end
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183 function is_contact_pending_out(username, host, jid)
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184 local roster = load_roster(username, host);
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185 local item = roster[jid];
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186 return item and item.ask;
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187 end
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188 function set_contact_pending_out(username, host, jid) -- subscribe
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189 local roster = load_roster(username, host);
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190 local item = roster[jid];
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191 if item and (item.ask or item.subscription == "to" or item.subscription == "both") then
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192 return true;
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193 end
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194 if not item then
177
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195 item = {subscription = "none", groups = {}};
176
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196 roster[jid] = item;
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197 end
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198 item.ask = "subscribe";
177
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199 log("debug", "set_contact_pending_out: saving roster; set "..username.."@"..host..".roster["..jid.."].ask=subscribe");
176
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200 return datamanager.store(username, host, "roster", roster);
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201 end
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202 function unsubscribe(username, host, jid)
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203 local roster = load_roster(username, host);
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204 local item = roster[jid];
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205 if not item then return false; end
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206 if (item.subscription == "from" or item.subscription == "none") and not item.ask then
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207 return true;
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208 end
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209 item.ask = nil;
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210 if item.subscription == "both" then
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211 item.subscription = "from";
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212 elseif item.subscription == "to" then
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213 item.subscription = "none";
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214 end
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215 return datamanager.store(username, host, "roster", roster);
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216 end
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217 function subscribed(username, host, jid)
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218 if is_contact_pending_in(username, host, jid) then
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219 local roster = load_roster(username, host);
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220 local item = roster[jid];
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221 if item.subscription == "none" then
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222 item.subscription = "from";
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223 else -- subscription == to
177
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224 item.subscription = "both";
176
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225 end
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226 roster.pending[jid] = nil;
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227 -- TODO maybe remove roster.pending if empty
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228 return datamanager.store(username, host, "roster", roster);
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229 end -- TODO else implement optional feature pre-approval (ask = subscribed)
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230 end
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231 function unsubscribed(username, host, jid)
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232 local roster = load_roster(username, host);
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233 local item = roster[jid];
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234 local pending = is_contact_pending_in(username, host, jid);
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235 local changed = nil;
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236 if is_contact_pending_in(username, host, jid) then
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237 roster.pending[jid] = nil; -- TODO maybe delete roster.pending if empty?
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238 changed = true;
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239 end
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diff changeset
240 if item then
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diff changeset
241 if item.subscription == "from" then
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242 item.subscription = "none";
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243 changed = true;
267
6303b7454ad0 Some bugs fixed
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diff changeset
244 elseif item.subscription == "both" then
176
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diff changeset
245 item.subscription = "to";
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246 changed = true;
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diff changeset
247 end
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diff changeset
248 end
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diff changeset
249 if changed then
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diff changeset
250 return datamanager.store(username, host, "roster", roster);
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251 end
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diff changeset
252 end
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253
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diff changeset
254 function process_outbound_subscription_request(username, host, jid)
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255 local roster = load_roster(username, host);
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256 local item = roster[jid];
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diff changeset
257 if item and (item.subscription == "none" or item.subscription == "from") then
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diff changeset
258 item.ask = "subscribe";
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259 return datamanager.store(username, host, "roster", roster);
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260 end
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261 end
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diff changeset
262
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diff changeset
263 --[[function process_outbound_subscription_approval(username, host, jid)
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diff changeset
264 local roster = load_roster(username, host);
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265 local item = roster[jid];
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266 if item and (item.subscription == "none" or item.subscription == "from" then
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267 item.ask = "subscribe";
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268 return datamanager.store(username, host, "roster", roster);
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269 end
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270 end]]
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271
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272
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273
80
523ac742cc19 Fixed: rostermanager.lua now returns the module
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diff changeset
274 return _M;