Mercurial > prosody-hg

annotate core/rostermanager.lua @ 177:606c433955e7

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Bug fixes and checks for presence subscriptions, etc
author Waqas Hussain <waqas20@gmail.com>
date Sun, 26 Oct 2008 00:22:18 +0500
parents e5cd2a03891d
children 403db3b5c3c2
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1
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2 local mainlog = log;
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3 local function log(type, message)
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4 mainlog(type, "rostermanager", message);
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5 end
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6
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7 local setmetatable = setmetatable;
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8 local format = string.format;
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9 local loadfile, setfenv, pcall = loadfile, setfenv, pcall;
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10 local pairs, ipairs = pairs, ipairs;
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12 local hosts = hosts;
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14 require "util.datamanager"
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15
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16 local datamanager = datamanager;
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17 local st = require "util.stanza";
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19 module "rostermanager"
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20
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21 function add_to_roster(session, jid, item)
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22 if session.roster then
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23 local old_item = session.roster[jid];
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24 session.roster[jid] = item;
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25 if save_roster(session.username, session.host) then
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26 return true;
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27 else
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28 session.roster[jid] = old_item;
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29 return nil, "wait", "internal-server-error", "Unable to save roster";
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30 end
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31 else
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32 return nil, "auth", "not-authorized", "Session's roster not loaded";
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33 end
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34 end
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35
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36 function remove_from_roster(session, jid)
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37 if session.roster then
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38 local old_item = session.roster[jid];
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39 session.roster[jid] = nil;
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40 if save_roster(session.username, session.host) then
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41 return true;
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42 else
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43 session.roster[jid] = old_item;
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44 return nil, "wait", "internal-server-error", "Unable to save roster";
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45 end
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46 else
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47 return nil, "auth", "not-authorized", "Session's roster not loaded";
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48 end
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49 end
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50
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51 function roster_push(username, host, jid)
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52 if jid ~= "pending" and hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster then
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53 local item = hosts[host].sessions[username].roster[jid];
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54 local stanza = st.iq({type="set"});
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55 stanza:tag("query", {xmlns = "jabber:iq:roster"});
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56 if item then
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57 stanza:tag("item", {jid = jid, subscription = item.subscription, name = item.name, ask = item.ask});
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58 for group in pairs(item.groups) do
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59 stanza:tag("group"):text(group):up();
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60 end
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61 else
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62 stanza:tag("item", {jid = jid, subscription = "remove"});
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63 end
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64 stanza:up();
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65 stanza:up();
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66 -- stanza ready
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67 for _, session in pairs(hosts[host].sessions[username].sessions) do
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68 if session.interested then
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69 -- FIXME do we need to set stanza.attr.to?
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70 session.send(stanza);
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71 end
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72 end
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73 end
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74 end
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75
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76 function load_roster(username, host)
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77 log("debug", "load_roster: asked for: "..username.."@"..host);
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78 if hosts[host] and hosts[host].sessions[username] then
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79 local roster = hosts[host].sessions[username].roster;
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80 if not roster then
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81 log("debug", "load_roster: loading for new user: "..username.."@"..host);
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82 roster = datamanager.load(username, host, "roster") or {};
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83 hosts[host].sessions[username].roster = roster;
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84 end
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85 return roster;
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86 end
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87 -- Attempt to load roster for non-loaded user
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88 log("debug", "load_roster: loading for offline user: "..username.."@"..host);
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89 return datamanager.load(username, host, "roster") or {};
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90 end
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91
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92 function save_roster(username, host)
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93 log("debug", "save_roster: saving roster for "..username.."@"..host);
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94 if hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster then
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95 return datamanager.store(username, host, "roster", hosts[host].sessions[username].roster);
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96 end
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97 return nil;
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98 end
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99
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100 function process_inbound_subscription_approval(username, host, jid)
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101 local roster = load_roster(username, host);
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102 local item = roster[jid];
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103 if item and item.ask then
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104 if item.subscription == "none" then
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105 item.subscription = "to";
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106 else -- subscription == from
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107 item.subscription = "both";
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108 end
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109 item.ask = nil;
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110 return datamanager.store(username, host, "roster", roster);
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111 end
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112 end
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113
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114 function process_inbound_subscription_cancellation(username, host, jid)
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115 local roster = load_roster(username, host);
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116 local item = roster[jid];
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117 local changed = nil;
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118 if is_contact_pending_out(username, host, jid) then
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119 item.ask = nil;
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120 changed = true;
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121 end
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122 if item then
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123 if item.subscription == "to" then
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124 item.subscription = "none";
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125 changed = true;
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126 elseif item.subscription == "both" then
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127 item.subscription = "from";
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128 changed = true;
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129 end
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130 end
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131 if changed then
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132 return datamanager.store(username, host, "roster", roster);
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133 end
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134 end
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135
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136 function process_inbound_unsubscribe(username, host, jid)
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137 local roster = load_roster(username, host);
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138 local item = roster[jid];
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139 local changed = nil;
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140 if is_contact_pending_in(username, host, jid) then
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141 roster.pending[jid] = nil; -- TODO maybe delete roster.pending if empty?
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142 changed = true;
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143 end
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144 if item then
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145 if item.subscription == "from" then
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146 item.subscription = "none";
176
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147 changed = true;
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148 elseif item.subscription == "both" then
173
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149 item.subscription = "to";
176
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150 changed = true;
173
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151 end
176
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152 end
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153 if changed then
173
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154 return datamanager.store(username, host, "roster", roster);
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155 end
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156 end
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157
174
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158 function is_contact_subscribed(username, host, jid)
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159 local roster = load_roster(username, host);
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160 local item = roster[jid];
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161 return item and (item.subscription == "from" or item.subscription == "both");
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162 end
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163
176
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164 function is_contact_pending_in(username, host, jid)
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165 local roster = load_roster(username, host);
177
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166 return roster.pending and roster.pending[jid];
176
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167 end
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168 function set_contact_pending_in(username, host, jid, pending)
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169 local roster = load_roster(username, host);
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170 local item = roster[jid];
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171 if item and (item.subscription == "from" or item.subscription == "both") then
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172 return; -- false
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173 end
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174 if not roster.pending then roster.pending = {}; end
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175 roster.pending[jid] = true;
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176 return datamanager.store(username, host, "roster", roster);
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177 end
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178 function is_contact_pending_out(username, host, jid)
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179 local roster = load_roster(username, host);
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180 local item = roster[jid];
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181 return item and item.ask;
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182 end
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183 function set_contact_pending_out(username, host, jid) -- subscribe
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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 if item and (item.ask or item.subscription == "to" or item.subscription == "both") then
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187 return true;
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188 end
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189 if not item then
177
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190 item = {subscription = "none", groups = {}};
176
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191 roster[jid] = item;
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192 end
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193 item.ask = "subscribe";
177
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194 log("debug", "set_contact_pending_out: saving roster; set "..username.."@"..host..".roster["..jid.."].ask=subscribe");
176
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195 return datamanager.store(username, host, "roster", roster);
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196 end
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197 function unsubscribe(username, host, jid)
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198 local roster = load_roster(username, host);
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199 local item = roster[jid];
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200 if not item then return false; end
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201 if (item.subscription == "from" or item.subscription == "none") and not item.ask then
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202 return true;
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203 end
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204 item.ask = nil;
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205 if item.subscription == "both" then
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206 item.subscription = "from";
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207 elseif item.subscription == "to" then
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208 item.subscription = "none";
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209 end
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210 return datamanager.store(username, host, "roster", roster);
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211 end
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212 function subscribed(username, host, jid)
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213 if is_contact_pending_in(username, host, jid) then
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214 local roster = load_roster(username, host);
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215 local item = roster[jid];
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216 if item.subscription == "none" then
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217 item.subscription = "from";
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218 else -- subscription == to
177
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219 item.subscription = "both";
176
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220 end
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221 roster.pending[jid] = nil;
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222 -- TODO maybe remove roster.pending if empty
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223 return datamanager.store(username, host, "roster", roster);
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224 end -- TODO else implement optional feature pre-approval (ask = subscribed)
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225 end
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226 function unsubscribed(username, host, jid)
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227 local roster = load_roster(username, host);
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228 local item = roster[jid];
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229 local pending = is_contact_pending_in(username, host, jid);
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230 local changed = nil;
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231 if is_contact_pending_in(username, host, jid) then
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232 roster.pending[jid] = nil; -- TODO maybe delete roster.pending if empty?
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233 changed = true;
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234 end
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diff changeset
235 if item then
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parents: 174
diff changeset
236 if item.subscription == "from" then
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237 item.subscription = "none";
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238 changed = true;
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diff changeset
239 elseif item.subscription == both then
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diff changeset
240 item.subscription = "to";
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241 changed = true;
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diff changeset
242 end
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diff changeset
243 end
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diff changeset
244 if changed then
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parents: 174
diff changeset
245 return datamanager.store(username, host, "roster", roster);
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diff changeset
246 end
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diff changeset
247 end
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diff changeset
248
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diff changeset
249 function process_outbound_subscription_request(username, host, jid)
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diff changeset
250 local roster = load_roster(username, host);
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251 local item = roster[jid];
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diff changeset
252 if item and (item.subscription == "none" or item.subscription == "from") then
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diff changeset
253 item.ask = "subscribe";
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254 return datamanager.store(username, host, "roster", roster);
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diff changeset
255 end
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diff changeset
256 end
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diff changeset
257
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diff changeset
258 --[[function process_outbound_subscription_approval(username, host, jid)
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diff changeset
259 local roster = load_roster(username, host);
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diff changeset
260 local item = roster[jid];
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diff changeset
261 if item and (item.subscription == "none" or item.subscription == "from" then
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diff changeset
262 item.ask = "subscribe";
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263 return datamanager.store(username, host, "roster", roster);
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diff changeset
264 end
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diff changeset
265 end]]
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266
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diff changeset
267
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diff changeset
268
80
523ac742cc19 Fixed: rostermanager.lua now returns the module
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diff changeset
269 return _M;