prosody
98ff89ab5d1d
core/rostermanager.lua

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core/rostermanager.lua @ 4893:98ff89ab5d1d

moduleapi, modulemanager: Re-structure module.event_handlers so that the same handler can harmlessly handle multiple events (thanks Zash)
author Matthew Wild <mwild1@gmail.com>
date Fri, 18 May 2012 23:53:02 +0100
parent 3129:125f03db0b1a
child 4993:5243b74a4cbb
child 5021:85b2689dbcfe
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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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b1885732e979 GPL->MIT!
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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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12 local log = require "util.logger".init("rostermanager");
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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 local tostring = tostring;
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19
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20 local hosts = hosts;
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21 local bare_sessions = bare_sessions;
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22
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23 local datamanager = require "util.datamanager"
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24 local st = require "util.stanza";
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25
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26 module "rostermanager"
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27
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28 function add_to_roster(session, jid, item)
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29 if session.roster then
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30 local old_item = session.roster[jid];
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31 session.roster[jid] = item;
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32 if save_roster(session.username, session.host) then
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33 return true;
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34 else
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35 session.roster[jid] = old_item;
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36 return nil, "wait", "internal-server-error", "Unable to save roster";
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37 end
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38 else
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39 return nil, "auth", "not-authorized", "Session's roster not loaded";
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40 end
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41 end
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42
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43 function remove_from_roster(session, jid)
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44 if session.roster then
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45 local old_item = session.roster[jid];
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46 session.roster[jid] = nil;
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47 if save_roster(session.username, session.host) then
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48 return true;
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49 else
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50 session.roster[jid] = old_item;
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51 return nil, "wait", "internal-server-error", "Unable to save roster";
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52 end
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53 else
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54 return nil, "auth", "not-authorized", "Session's roster not loaded";
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55 end
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56 end
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57
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58 function roster_push(username, host, jid)
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59 local roster = jid and jid ~= "pending" and hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster;
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60 if roster then
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61 local item = hosts[host].sessions[username].roster[jid];
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62 local stanza = st.iq({type="set"});
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63 stanza:tag("query", {xmlns = "jabber:iq:roster", ver = tostring(roster[false].version or "1") });
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64 if item then
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65 stanza:tag("item", {jid = jid, subscription = item.subscription, name = item.name, ask = item.ask});
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66 for group in pairs(item.groups) do
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67 stanza:tag("group"):text(group):up();
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68 end
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69 else
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70 stanza:tag("item", {jid = jid, subscription = "remove"});
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71 end
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72 stanza:up(); -- move out from item
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73 stanza:up(); -- move out from stanza
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74 -- stanza ready
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75 for _, session in pairs(hosts[host].sessions[username].sessions) do
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76 if session.interested then
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77 -- FIXME do we need to set stanza.attr.to?
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78 session.send(stanza);
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79 end
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80 end
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81 end
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82 end
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83
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84 function load_roster(username, host)
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85 local jid = username.."@"..host;
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86 log("debug", "load_roster: asked for: "..jid);
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87 local user = bare_sessions[jid];
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88 local roster;
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89 if user then
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90 roster = user.roster;
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91 if roster then return roster; end
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92 log("debug", "load_roster: loading for new user: "..username.."@"..host);
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93 else -- Attempt to load roster for non-loaded user
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94 log("debug", "load_roster: loading for offline user: "..username.."@"..host);
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95 end
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96 local data, err = datamanager.load(username, host, "roster");
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97 roster = data or {};
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98 if user then user.roster = roster; end
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99 if not roster[false] then roster[false] = { broken = err or nil }; end
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100 if roster[jid] then
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101 roster[jid] = nil;
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102 log("warn", "roster for "..jid.." has a self-contact");
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103 end
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104 if not err then
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105 hosts[host].events.fire_event("roster-load", username, host, roster);
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106 end
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107 return roster, err;
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108 end
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109
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110 function save_roster(username, host, roster)
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111 log("debug", "save_roster: saving roster for "..username.."@"..host);
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112 if not roster then
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113 roster = hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster;
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114 --if not roster then
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115 -- --roster = load_roster(username, host);
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116 -- return true; -- roster unchanged, no reason to save
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117 --end
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118 end
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119 if roster then
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120 local metadata = roster[false];
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121 if not metadata then
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122 metadata = {};
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123 roster[false] = metadata;
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124 end
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125 if metadata.version ~= true then
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126 metadata.version = (metadata.version or 0) + 1;
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127 end
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128 if roster[false].broken then return nil, "Not saving broken roster" end
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129 return datamanager.store(username, host, "roster", roster);
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130 end
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131 log("warn", "save_roster: user had no roster to save");
101
c690fa382743 Added some roster management functions
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132 return nil;
0
3e3171b59028 First commit, where do you want to go tomorrow?
matthew
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133 end
80
523ac742cc19 Fixed: rostermanager.lua now returns the module
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134
171
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135 function process_inbound_subscription_approval(username, host, jid)
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136 local roster = load_roster(username, host);
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137 local item = roster[jid];
176
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138 if item and item.ask then
171
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139 if item.subscription == "none" then
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140 item.subscription = "to";
176
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141 else -- subscription == from
171
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142 item.subscription = "both";
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143 end
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144 item.ask = nil;
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1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
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145 return save_roster(username, host, roster);
171
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146 end
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147 end
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148
172
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149 function process_inbound_subscription_cancellation(username, host, jid)
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150 local roster = load_roster(username, host);
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151 local item = roster[jid];
176
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152 local changed = nil;
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153 if is_contact_pending_out(username, host, jid) then
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154 item.ask = nil;
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155 changed = true;
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156 end
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157 if item then
172
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158 if item.subscription == "to" then
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159 item.subscription = "none";
176
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160 changed = true;
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161 elseif item.subscription == "both" then
172
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162 item.subscription = "from";
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163 changed = true;
172
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164 end
176
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165 end
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166 if changed then
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1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
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167 return save_roster(username, host, roster);
172
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168 end
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169 end
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170
173
f3a2af4d2ff2 Inbound unsubscribe
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171 function process_inbound_unsubscribe(username, host, jid)
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172 local roster = load_roster(username, host);
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173 local item = roster[jid];
176
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174 local changed = nil;
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175 if is_contact_pending_in(username, host, jid) then
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176 roster.pending[jid] = nil; -- TODO maybe delete roster.pending if empty?
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177 changed = true;
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178 end
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179 if item then
173
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180 if item.subscription == "from" then
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181 item.subscription = "none";
176
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182 changed = true;
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183 elseif item.subscription == "both" then
173
f3a2af4d2ff2 Inbound unsubscribe
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184 item.subscription = "to";
176
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185 changed = true;
173
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186 end
176
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187 end
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188 if changed then
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1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
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189 return save_roster(username, host, roster);
173
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190 end
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191 end
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diff changeset
192
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125f03db0b1a rostermanager: Optimisation to avoid unnecessarily loading rosters for offline contacts on probes, etc.
Waqas Hussain <waqas20@gmail.com>
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193 local function _get_online_roster_subscription(jidA, jidB)
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194 local user = bare_sessions[jidA];
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195 local item = user and (user.roster[jidB] or { subscription = "none" });
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196 return item and item.subscription;
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197 end
174
f9aff1fc7e99 Inbound subscription request
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198 function is_contact_subscribed(username, host, jid)
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199 do
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200 local selfjid = username.."@"..host;
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201 local subscription = _get_online_roster_subscription(selfjid, jid);
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202 if subscription then return (subscription == "both" or subscription == "from"); end
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Waqas Hussain <waqas20@gmail.com>
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203 local subscription = _get_online_roster_subscription(jid, selfjid);
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204 if subscription then return (subscription == "both" or subscription == "to"); end
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205 end
3111
826cb5f1859b rostermanager: Return an error string when subscription test fails due to an error.
Waqas Hussain <waqas20@gmail.com>
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diff changeset
206 local roster, err = load_roster(username, host);
174
f9aff1fc7e99 Inbound subscription request
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207 local item = roster[jid];
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208 return item and (item.subscription == "from" or item.subscription == "both"), err;
174
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209 end
f9aff1fc7e99 Inbound subscription request
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diff changeset
210
176
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211 function is_contact_pending_in(username, host, jid)
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212 local roster = load_roster(username, host);
177
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213 return roster.pending and roster.pending[jid];
176
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214 end
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215 function set_contact_pending_in(username, host, jid, pending)
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216 local roster = load_roster(username, host);
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217 local item = roster[jid];
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218 if item and (item.subscription == "from" or item.subscription == "both") then
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219 return; -- false
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220 end
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221 if not roster.pending then roster.pending = {}; end
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222 roster.pending[jid] = true;
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1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
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223 return save_roster(username, host, roster);
176
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224 end
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225 function is_contact_pending_out(username, host, jid)
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226 local roster = load_roster(username, host);
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227 local item = roster[jid];
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228 return item and item.ask;
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229 end
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230 function set_contact_pending_out(username, host, jid) -- subscribe
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231 local roster = load_roster(username, host);
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232 local item = roster[jid];
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233 if item and (item.ask or item.subscription == "to" or item.subscription == "both") then
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234 return true;
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235 end
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236 if not item then
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237 item = {subscription = "none", groups = {}};
176
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238 roster[jid] = item;
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239 end
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240 item.ask = "subscribe";
177
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241 log("debug", "set_contact_pending_out: saving roster; set "..username.."@"..host..".roster["..jid.."].ask=subscribe");
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1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
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242 return save_roster(username, host, roster);
176
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243 end
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244 function unsubscribe(username, host, jid)
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245 local roster = load_roster(username, host);
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246 local item = roster[jid];
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247 if not item then return false; end
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248 if (item.subscription == "from" or item.subscription == "none") and not item.ask then
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249 return true;
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250 end
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251 item.ask = nil;
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252 if item.subscription == "both" then
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253 item.subscription = "from";
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254 elseif item.subscription == "to" then
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255 item.subscription = "none";
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256 end
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1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
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257 return save_roster(username, host, roster);
176
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258 end
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259 function subscribed(username, host, jid)
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260 if is_contact_pending_in(username, host, jid) then
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261 local roster = load_roster(username, host);
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262 local item = roster[jid];
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4861bcf0afa4 Fixed: rostermanager: Create new roster item if one doesn't exist on subscription approval (fixes issue #77)
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diff changeset
263 if not item then -- FIXME should roster item be auto-created?
4861bcf0afa4 Fixed: rostermanager: Create new roster item if one doesn't exist on subscription approval (fixes issue #77)
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264 item = {subscription = "none", groups = {}};
4861bcf0afa4 Fixed: rostermanager: Create new roster item if one doesn't exist on subscription approval (fixes issue #77)
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diff changeset
265 roster[jid] = item;
4861bcf0afa4 Fixed: rostermanager: Create new roster item if one doesn't exist on subscription approval (fixes issue #77)
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266 end
176
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267 if item.subscription == "none" then
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268 item.subscription = "from";
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269 else -- subscription == to
177
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270 item.subscription = "both";
176
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271 end
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272 roster.pending[jid] = nil;
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273 -- TODO maybe remove roster.pending if empty
1898
1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
Waqas Hussain <waqas20@gmail.com>
parents: 1897
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274 return save_roster(username, host, roster);
176
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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275 end -- TODO else implement optional feature pre-approval (ask = subscribed)
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276 end
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parents: 174
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277 function unsubscribed(username, host, jid)
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parents: 174
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278 local roster = load_roster(username, host);
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279 local item = roster[jid];
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parents: 174
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280 local pending = is_contact_pending_in(username, host, jid);
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parents: 174
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281 local changed = nil;
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parents: 174
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282 if is_contact_pending_in(username, host, jid) then
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parents: 174
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283 roster.pending[jid] = nil; -- TODO maybe delete roster.pending if empty?
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parents: 174
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284 changed = true;
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parents: 174
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285 end
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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286 if item then
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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287 if item.subscription == "from" then
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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288 item.subscription = "none";
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parents: 174
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289 changed = true;
267
6303b7454ad0 Some bugs fixed
Waqas Hussain <waqas20@gmail.com>
parents: 193
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290 elseif item.subscription == "both" then
176
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parents: 174
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291 item.subscription = "to";
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parents: 174
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292 changed = true;
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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293 end
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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294 end
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Waqas Hussain <waqas20@gmail.com>
parents: 174
diff changeset
295 if changed then
1898
1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
Waqas Hussain <waqas20@gmail.com>
parents: 1897
diff changeset
296 return save_roster(username, host, roster);
176
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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297 end
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298 end
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299
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parents: 174
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300 function process_outbound_subscription_request(username, host, jid)
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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301 local roster = load_roster(username, host);
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parents: 174
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302 local item = roster[jid];
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parents: 174
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303 if item and (item.subscription == "none" or item.subscription == "from") then
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parents: 174
diff changeset
304 item.ask = "subscribe";
1898
1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
Waqas Hussain <waqas20@gmail.com>
parents: 1897
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305 return save_roster(username, host, roster);
176
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parents: 174
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306 end
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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307 end
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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308
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Waqas Hussain <waqas20@gmail.com>
parents: 174
diff changeset
309 --[[function process_outbound_subscription_approval(username, host, jid)
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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310 local roster = load_roster(username, host);
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parents: 174
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311 local item = roster[jid];
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parents: 174
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312 if item and (item.subscription == "none" or item.subscription == "from" then
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parents: 174
diff changeset
313 item.ask = "subscribe";
1898
1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
Waqas Hussain <waqas20@gmail.com>
parents: 1897
diff changeset
314 return save_roster(username, host, roster);
176
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parents: 174
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315 end
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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316 end]]
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parents: 174
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317
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Waqas Hussain <waqas20@gmail.com>
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318
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Waqas Hussain <waqas20@gmail.com>
parents: 174
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319
916
f0743928ef7e core.rostermanager/mod_roster: Support for roster versioning
Matthew Wild <mwild1@gmail.com>
parents: 896
diff changeset
320 return _M;