prosody
ad64e2eacd0e
core/rostermanager.lua

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core/rostermanager.lua @ 6787:ad64e2eacd0e

rostermanager: Add forward declarations
author Kim Alvefur <zash@zash.se>
date Wed, 08 Apr 2015 00:44:30 +0200
parent 6779:6236668da30a
child 7064:b98006bfd97a
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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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 pairs = pairs;
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15 local tostring = tostring;
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16 local type = type;
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17
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18 local hosts = hosts;
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19 local bare_sessions = prosody.bare_sessions;
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20
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21 local datamanager = require "util.datamanager"
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22 local um_user_exists = require "core.usermanager".user_exists;
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23 local st = require "util.stanza";
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25 local _ENV = nil;
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26
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27 local save_roster; -- forward declaration
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28
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29 local function add_to_roster(session, jid, item)
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30 if session.roster then
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31 local old_item = session.roster[jid];
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32 session.roster[jid] = item;
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33 if save_roster(session.username, session.host) then
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34 return true;
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35 else
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36 session.roster[jid] = old_item;
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37 return nil, "wait", "internal-server-error", "Unable to save roster";
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38 end
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39 else
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40 return nil, "auth", "not-authorized", "Session's roster not loaded";
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41 end
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42 end
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43
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44 local function remove_from_roster(session, jid)
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45 if session.roster then
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46 local old_item = session.roster[jid];
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47 session.roster[jid] = nil;
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48 if save_roster(session.username, session.host) then
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49 return true;
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50 else
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51 session.roster[jid] = old_item;
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52 return nil, "wait", "internal-server-error", "Unable to save roster";
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53 end
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54 else
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55 return nil, "auth", "not-authorized", "Session's roster not loaded";
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56 end
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57 end
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58
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59 local function roster_push(username, host, jid)
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60 local roster = jid and hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster;
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61 if roster then
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62 local item = hosts[host].sessions[username].roster[jid];
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63 local stanza = st.iq({type="set"});
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64 stanza:tag("query", {xmlns = "jabber:iq:roster", ver = tostring(roster[false].version or "1") });
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65 if item then
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66 stanza:tag("item", {jid = jid, subscription = item.subscription, name = item.name, ask = item.ask});
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67 for group in pairs(item.groups) do
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68 stanza:tag("group"):text(group):up();
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69 end
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70 else
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71 stanza:tag("item", {jid = jid, subscription = "remove"});
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72 end
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73 stanza:up(); -- move out from item
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74 stanza:up(); -- move out from stanza
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75 -- stanza ready
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76 for _, session in pairs(hosts[host].sessions[username].sessions) do
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77 if session.interested then
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78 -- FIXME do we need to set stanza.attr.to?
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79 session.send(stanza);
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80 end
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81 end
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82 end
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83 end
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84
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85 local function roster_metadata(roster, err)
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86 local metadata = roster[false];
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87 if not metadata then
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88 metadata = { broken = err or nil };
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89 roster[false] = metadata;
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90 end
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91 if roster.pending and type(roster.pending.subscription) ~= "string" then
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92 metadata.pending = roster.pending;
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93 roster.pending = nil;
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94 elseif not metadata.pending then
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95 metadata.pending = {};
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96 end
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97 return metadata;
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98 end
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99
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100 local function load_roster(username, host)
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101 local jid = username.."@"..host;
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102 log("debug", "load_roster: asked for: %s", jid);
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103 local user = bare_sessions[jid];
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104 local roster;
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105 if user then
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106 roster = user.roster;
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107 if roster then return roster; end
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108 log("debug", "load_roster: loading for new user: %s@%s", username, host);
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109 else -- Attempt to load roster for non-loaded user
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110 log("debug", "load_roster: loading for offline user: %s@%s", username, host);
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111 end
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112 local data, err = datamanager.load(username, host, "roster");
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113 roster = data or {};
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114 if user then user.roster = roster; end
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115 roster_metadata(roster, err);
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116 if roster[jid] then
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117 roster[jid] = nil;
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118 log("warn", "roster for %s has a self-contact", jid);
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119 end
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120 if not err then
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121 hosts[host].events.fire_event("roster-load", { username = username, host = host, roster = roster });
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122 end
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123 return roster, err;
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124 end
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125
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126 function save_roster(username, host, roster)
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127 if not um_user_exists(username, host) then
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128 log("debug", "not saving roster for %s@%s: the user doesn't exist", username, host);
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129 return nil;
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130 end
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131
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parents: 3129
diff changeset
132 log("debug", "save_roster: saving roster for %s@%s", username, host);
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133 if not roster then
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134 roster = hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster;
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135 --if not roster then
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136 -- --roster = load_roster(username, host);
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137 -- return true; -- roster unchanged, no reason to save
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138 --end
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139 end
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140 if roster then
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141 local metadata = roster_metadata(roster);
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parents: 2050
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142 if metadata.version ~= true then
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parents: 2050
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143 metadata.version = (metadata.version or 0) + 1;
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parents: 2050
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144 end
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145 if metadata.broken then return nil, "Not saving broken roster" end
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diff changeset
146 return datamanager.store(username, host, "roster", roster);
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147 end
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148 log("warn", "save_roster: user had no roster to save");
101
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149 return nil;
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matthew
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150 end
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151
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152 local function process_inbound_subscription_approval(username, host, jid)
171
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153 local roster = load_roster(username, host);
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154 local item = roster[jid];
176
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155 if item and item.ask then
171
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156 if item.subscription == "none" then
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157 item.subscription = "to";
176
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158 else -- subscription == from
171
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159 item.subscription = "both";
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160 end
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161 item.ask = nil;
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162 return save_roster(username, host, roster);
171
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163 end
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164 end
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165
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166 local is_contact_pending_out -- forward declaration
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167
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168 local function process_inbound_subscription_cancellation(username, host, jid)
172
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169 local roster = load_roster(username, host);
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170 local item = roster[jid];
176
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171 local changed = nil;
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172 if is_contact_pending_out(username, host, jid) then
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173 item.ask = nil;
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174 changed = true;
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175 end
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176 if item then
172
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177 if item.subscription == "to" then
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178 item.subscription = "none";
176
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179 changed = true;
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180 elseif item.subscription == "both" then
172
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181 item.subscription = "from";
176
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182 changed = true;
172
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183 end
176
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184 end
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185 if changed then
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186 return save_roster(username, host, roster);
172
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187 end
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188 end
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189
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190 local is_contact_pending_in -- forward declaration
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191
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192 local function process_inbound_unsubscribe(username, host, jid)
173
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193 local roster = load_roster(username, host);
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194 local item = roster[jid];
176
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195 local changed = nil;
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196 if is_contact_pending_in(username, host, jid) then
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197 roster[false].pending[jid] = nil;
176
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198 changed = true;
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199 end
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200 if item then
173
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201 if item.subscription == "from" then
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202 item.subscription = "none";
176
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203 changed = true;
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204 elseif item.subscription == "both" then
173
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205 item.subscription = "to";
176
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206 changed = true;
173
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207 end
176
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208 end
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diff changeset
209 if changed then
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210 return save_roster(username, host, roster);
173
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211 end
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212 end
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parents: 172
diff changeset
213
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diff changeset
214 local function _get_online_roster_subscription(jidA, jidB)
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215 local user = bare_sessions[jidA];
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216 local item = user and (user.roster[jidB] or { subscription = "none" });
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217 return item and item.subscription;
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218 end
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219 local function is_contact_subscribed(username, host, jid)
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220 do
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221 local selfjid = username.."@"..host;
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diff changeset
222 local user_subscription = _get_online_roster_subscription(selfjid, jid);
5ef319efedba rostermanager: Variable rename for clarity and to avoid name clash [luacheck]
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diff changeset
223 if user_subscription then return (user_subscription == "both" or user_subscription == "from"); end
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parents: 6624
diff changeset
224 local contact_subscription = _get_online_roster_subscription(jid, selfjid);
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parents: 6624
diff changeset
225 if contact_subscription then return (contact_subscription == "both" or contact_subscription == "to"); end
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diff changeset
226 end
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diff changeset
227 local roster, err = load_roster(username, host);
174
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diff changeset
228 local item = roster[jid];
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229 return item and (item.subscription == "from" or item.subscription == "both"), err;
174
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230 end
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diff changeset
231
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232 function is_contact_pending_in(username, host, jid)
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233 local roster = load_roster(username, host);
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234 return roster[false].pending[jid];
176
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235 end
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236 local function set_contact_pending_in(username, host, jid)
176
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237 local roster = load_roster(username, host);
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238 local item = roster[jid];
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239 if item and (item.subscription == "from" or item.subscription == "both") then
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diff changeset
240 return; -- false
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241 end
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diff changeset
242 roster[false].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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diff changeset
243 return save_roster(username, host, roster);
176
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diff changeset
244 end
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diff changeset
245 function is_contact_pending_out(username, host, jid)
176
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diff changeset
246 local roster = load_roster(username, host);
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247 local item = roster[jid];
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248 return item and item.ask;
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249 end
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250 local function set_contact_pending_out(username, host, jid) -- subscribe
176
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diff changeset
251 local roster = load_roster(username, host);
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252 local item = roster[jid];
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253 if item and (item.ask or item.subscription == "to" or item.subscription == "both") then
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diff changeset
254 return true;
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255 end
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diff changeset
256 if not item then
177
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diff changeset
257 item = {subscription = "none", groups = {}};
176
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258 roster[jid] = item;
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259 end
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diff changeset
260 item.ask = "subscribe";
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parents: 3129
diff changeset
261 log("debug", "set_contact_pending_out: saving roster; set %s@%s.roster[%q].ask=subscribe", username, host, jid);
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diff changeset
262 return save_roster(username, host, roster);
176
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263 end
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diff changeset
264 local function unsubscribe(username, host, jid)
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diff changeset
265 local roster = load_roster(username, host);
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266 local item = roster[jid];
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267 if not item then return false; end
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268 if (item.subscription == "from" or item.subscription == "none") and not item.ask then
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269 return true;
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270 end
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271 item.ask = nil;
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272 if item.subscription == "both" then
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273 item.subscription = "from";
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274 elseif item.subscription == "to" then
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275 item.subscription = "none";
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276 end
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277 return save_roster(username, host, roster);
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278 end
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279 local function subscribed(username, host, jid)
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280 if is_contact_pending_in(username, host, jid) then
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281 local roster = load_roster(username, host);
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282 local item = roster[jid];
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283 if not item then -- FIXME should roster item be auto-created?
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284 item = {subscription = "none", groups = {}};
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285 roster[jid] = item;
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286 end
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287 if item.subscription == "none" then
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288 item.subscription = "from";
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289 else -- subscription == to
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290 item.subscription = "both";
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291 end
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292 roster[false].pending[jid] = nil;
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293 return save_roster(username, host, roster);
176
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294 end -- TODO else implement optional feature pre-approval (ask = subscribed)
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295 end
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296 local function unsubscribed(username, host, jid)
176
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297 local roster = load_roster(username, host);
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298 local item = roster[jid];
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299 local pending = is_contact_pending_in(username, host, jid);
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300 if pending then
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301 roster[false].pending[jid] = nil;
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302 end
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303 local subscribed;
176
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304 if item then
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305 if item.subscription == "from" then
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306 item.subscription = "none";
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307 subscribed = true;
267
6303b7454ad0 Some bugs fixed
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308 elseif item.subscription == "both" then
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309 item.subscription = "to";
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310 subscribed = true;
176
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311 end
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312 end
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313 local success = (pending or subscribed) and save_roster(username, host, roster);
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314 return success, pending, subscribed;
176
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315 end
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316
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317 local function process_outbound_subscription_request(username, host, jid)
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318 local roster = load_roster(username, host);
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319 local item = roster[jid];
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320 if item and (item.subscription == "none" or item.subscription == "from") then
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321 item.ask = "subscribe";
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322 return save_roster(username, host, roster);
176
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323 end
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324 end
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325
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326 --[[function process_outbound_subscription_approval(username, host, jid)
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327 local roster = load_roster(username, host);
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328 local item = roster[jid];
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329 if item and (item.subscription == "none" or item.subscription == "from" then
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330 item.ask = "subscribe";
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1ce02e2f5a3f rostermanager: Fixed: Roster version was not being properly updated in some edge cases.
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331 return save_roster(username, host, roster);
176
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332 end
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333 end]]
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334
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335
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336
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337 return {
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338 add_to_roster = add_to_roster;
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339 remove_from_roster = remove_from_roster;
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340 roster_push = roster_push;
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341 load_roster = load_roster;
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342 save_roster = save_roster;
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343 process_inbound_subscription_approval = process_inbound_subscription_approval;
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344 process_inbound_subscription_cancellation = process_inbound_subscription_cancellation;
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345 process_inbound_unsubscribe = process_inbound_unsubscribe;
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346 is_contact_subscribed = is_contact_subscribed;
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347 is_contact_pending_in = is_contact_pending_in;
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348 set_contact_pending_in = set_contact_pending_in;
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349 is_contact_pending_out = is_contact_pending_out;
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350 set_contact_pending_out = set_contact_pending_out;
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351 unsubscribe = unsubscribe;
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352 subscribed = subscribed;
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353 unsubscribed = unsubscribed;
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diff changeset
354 process_outbound_subscription_request = process_outbound_subscription_request;
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diff changeset
355 };