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annotate mod_groups_internal/mod_groups_internal.lua @ 4388:7de3c955cfe2

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mod_groups_internal: allow creating MUCs if a MUC host is linked
author Jonas Schäfer <jonas@wielicki.name>
date Mon, 25 Jan 2021 21:47:38 +0100
parents 6357ac65b4eb
children 6cfa313cd524
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1 local rostermanager = require"core.rostermanager";
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2 local modulemanager = require"core.modulemanager";
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3 local id = require "util.id";
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4 local jid = require "util.jid";
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5 local jid_join = jid.join;
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6 local host = module.host;
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7
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8 local group_info_store = module:open_store("group_info");
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9 local group_members_store = module:open_store("groups");
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10 local group_memberships = module:open_store("groups", "map");
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11
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12 local muc_host_name = module:get_option("groups_muc_host", "chats."..host);
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13 local muc_host = nil;
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14
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15 local is_contact_subscribed = rostermanager.is_contact_subscribed;
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16
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17 -- Make a *one-way* subscription. User will see when contact is online,
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18 -- contact will not see when user is online.
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19 local function subscribe(user, user_jid, contact, contact_jid)
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20 -- Update user's roster to say subscription request is pending...
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21 rostermanager.set_contact_pending_out(user, host, contact_jid);
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22 -- Update contact's roster to say subscription request is pending...
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23 rostermanager.set_contact_pending_in(contact, host, user_jid);
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24 -- Update contact's roster to say subscription request approved...
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25 rostermanager.subscribed(contact, host, user_jid);
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26 -- Update user's roster to say subscription request approved...
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27 rostermanager.process_inbound_subscription_approval(user, host, contact_jid);
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28
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29 -- Push updates to both rosters
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30 rostermanager.roster_push(user, host, contact_jid);
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31 rostermanager.roster_push(contact, host, user_jid);
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32 end
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33
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34 local function user_groups(username)
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35 return pairs(group_memberships:get_all(username) or {});
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36 end
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37
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38 local function do_single_group_subscriptions(username, group_id)
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39 local members = group_members_store:get(group_id);
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40 if not members then return; end
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41 local user_jid = jid_join(username, host);
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42 for membername in pairs(members) do
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43 if membername ~= username then
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44 local member_jid = jid_join(membername, host);
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45 if not is_contact_subscribed(username, host, member_jid) then
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46 module:log("debug", "[group %s] Subscribing %s to %s", member_jid, user_jid);
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47 subscribe(membername, member_jid, username, user_jid);
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48 end
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49 if not is_contact_subscribed(membername, host, user_jid) then
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50 module:log("debug", "[group %s] Subscribing %s to %s", user_jid, member_jid);
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51 subscribe(username, user_jid, membername, member_jid);
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52 end
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53 end
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54 end
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55 end
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56
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57 local function do_all_group_subscriptions_by_user(username)
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58 for group_id in user_groups(username) do
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59 do_single_group_subscriptions(username, group_id);
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60 end
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61 end
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62
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63 local function do_all_group_subscriptions_by_group(group_id)
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64 for membername in pairs(get_members(group_id)) do
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65 do_single_group_subscriptions(membername, group_id);
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66 end
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67 end
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68
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69 module:hook("resource-bind", function(event)
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70 module:log("debug", "Updating group subscriptions...");
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71 do_all_group_subscriptions_by_user(event.session.username);
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72 end);
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73
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74 local function get_group_muc(group_id)
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75 -- Group MUC
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76 local group_info = group_info_store:get(group_id);
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77 if group_info and group_info.muc_jid then
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78 local muc_jid = group_info.muc_jid;
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79 local mod_muc = hosts[jid.host(muc_jid)].modules.muc;
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80 if mod_muc then
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81 local room = mod_muc.get_room_from_jid(muc_jid);
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82 if not room then
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83 room = mod_muc.create_room(muc_jid);
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84 end
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85 return room;
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86 end
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87 end
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88 end
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89
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90 --luacheck: ignore 131
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91 function create(group_info, create_muc, group_id)
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92 if not group_info.name then
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93 return nil, "group-name-required";
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94 end
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95 if group_id then
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96 if exists(group_id) then
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97 return nil, "conflict"
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98 end
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99 else
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100 group_id = id.short();
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101 end
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102
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103 local muc_jid = nil
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104 local room = nil
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105 if create_muc then
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106 if not muc_host_name then
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107 module:log("error", "cannot create group with MUC: no MUC host configured")
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108 return nil, "service-unavailable"
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109 end
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110 if not muc_host then
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111 module:log("error", "cannot create group with MUC: MUC host %s not configured properly", muc_host_name)
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112 return nil, "internal-server-error"
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113 end
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114
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115 muc_jid = id.short() .. "@" .. muc_host_name
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116 room = muc_host.create_room(muc_jid)
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117 if not room then
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118 delete_group(group_id)
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119 return nil, "internal-server-error"
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120 end
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121 room:set_public(false)
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122 room:set_persistent(true)
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123 room:set_members_only(true)
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124 room:set_allow_member_invites(false)
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125 room:set_moderated(false)
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126 room:set_whois("anyone")
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127 end
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128
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129 local ok = group_info_store:set(group_id, {
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130 name = group_info.name;
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131 muc_jid = muc_jid;
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132 });
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133 if not ok then
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134 if room then
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135 muc_host:delete_room(room)
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136 end
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137 return nil, "internal-server-error";
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138 end
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139
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140 return group_id;
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141 end
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142
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143 function get_info(group_id)
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144 return group_info_store:get(group_id);
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145 end
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146
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147 function set_info(group_id, info)
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148 if not info then
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149 return nil, "bad-request"
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150 end
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151
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152 if not info.name or #info.name == 0 then
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153 return nil, "bad-request"
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154 end
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155
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156 local ok = group_info_store:set(group_id, info);
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157 if not ok then
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158 return nil, "internal-server-error";
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159 end
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160 return true
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161 end
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162
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163 function get_members(group_id)
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164 return group_members_store:get(group_id);
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165 end
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166
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167 function exists(group_id)
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168 return not not get_info(group_id);
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169 end
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170
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171 function get_user_groups(username)
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172 local groups = {};
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173 do
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174 local group_set = group_memberships:get_all(username);
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175 if group_set then
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176 for group_id in pairs(group_set) do
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177 table.insert(groups, group_id);
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178 end
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179 end
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180 end
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181 return groups;
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182 end
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183
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184 function delete(group_id)
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185 if group_members_store:set(group_id, nil) then
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186 return group_info_store:set(group_id, nil);
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187 end
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188 return nil, "internal-server-error";
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189 end
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190
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191 function add_member(group_id, username, delay_update)
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192 local group_info = group_info_store:get(group_id);
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193 if not group_info then
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194 return nil, "group-not-found";
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195 end
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196 if not group_memberships:set(group_id, username, {}) then
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197 return nil, "internal-server-error";
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198 end
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199 if not delay_update then
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200 do_all_group_subscriptions_by_group(group_id);
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201 end
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202 return true;
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203 end
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204
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205 function remove_member(group_id, username)
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206 local group_info = group_info_store:get(group_id);
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207 if not group_info then
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208 return nil, "group-not-found";
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209 end
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210 if not group_memberships:set(group_id, username, nil) then
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211 return nil, "internal-server-error";
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212 end
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213 return true;
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214 end
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215
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216 function sync(group_id)
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217 do_all_group_subscriptions_by_group(group_id)
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218 end
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219
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220 -- Returns iterator over group ids
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221 function groups()
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222 return group_info_store:users();
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223 end
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224
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225 local function handle_server_started()
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226 local target_module = modulemanager.get_module(muc_host_name, "muc")
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227 if not target_module then
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228 module:log("error", "host %s is not a MUC host -- group management will not work correctly", muc_host_name)
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229 else
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230 module:log("debug", "found MUC host")
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231 muc_host = target_module;
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232 end
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233 end
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234
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235 module:hook_global("server-started", handle_server_started)