plugins/mod_groups.lua

   1 -- Prosody IM
   2 -- Copyright (C) 2008-2009 Matthew Wild
   3 -- Copyright (C) 2008-2009 Waqas Hussain
   4 --
   5 -- This project is MIT/X11 licensed. Please see the
   6 -- COPYING file in the source package for more information.
   7 --
   8
   9
  10 local groups = { default = {} };
  11 local members = { [false] = {} };
  12
  13 local groups_file;
  14
  15 local jid, datamanager = require "util.jid", require "util.datamanager";
  16 local jid_bare, jid_prep = jid.bare, jid.prep;
  17
  18 local module_host = module:get_host();
  19
  20 function inject_roster_contacts(username, host, roster)
  21         module:log("warn", "Injecting group members to roster");
  22         local bare_jid = username.."@"..host;
  23         if not members[bare_jid] then return; end -- Not a member of any groups
  24
  25         local function import_jids_to_roster(group_name)
  26                 for jid in pairs(groups[group_name]) do
  27                         -- Add them to roster
  28                         --module:log("debug", "processing jid %s in group %s", tostring(jid), tostring(group_name));
  29                         if jid ~= bare_jid then
  30                                 if not roster[jid] then roster[jid] = {}; end
  31                                 roster[jid].subscription = "both";
  32                                 if not roster[jid].groups then
  33                                         roster[jid].groups = { [group_name] = true };
  34                                 end
  35                                 roster[jid].groups[group_name] = true;
  36                                 roster[jid].persist = false;
  37                         end
  38                 end
  39         end
  40
  41         -- Find groups this JID is a member of
  42         for _, group_name in ipairs(members[bare_jid]) do
  43                 import_jids_to_roster(group_name);
  44         end
  45
  46         -- Import public groups
  47         for _, group_name in ipairs(members[false]) do
  48                 import_jids_to_roster(group_name);
  49         end
  50 end
  51
  52 function remove_virtual_contacts(username, host, datastore, data)
  53         if host == module_host and datastore == "roster" then
  54                 local new_roster = {};
  55                 for jid, contact in pairs(data) do
  56                         if contact.persist ~= false then
  57                                 new_roster[jid] = contact;
  58                         end
  59                 end
  60                 return username, host, datastore, new_roster;
  61         end
  62
  63         return username, host, datastore, data;
  64 end
  65
  66 function module.load()
  67         groups_file = config.get(module:get_host(), "core", "groups_file");
  68         if not groups_file then return; end
  69
  70         module:hook("roster-load", inject_roster_contacts);
  71         datamanager.add_callback(remove_virtual_contacts);
  72
  73         groups = { default = {} };
  74         members = { [false] = {} };
  75         local curr_group = "default";
  76         for line in io.lines(groups_file) do
  77                 if line:match("^%s*%[.-%]%s*$") then
  78                         curr_group = line:match("^%s*%[(.-)%]%s*$");
  79                         if curr_group:match("^%+") then
  80                                 curr_group = curr_group:gsub("^%+", "");
  81                                 members[false][#members[false]+1] = curr_group; -- Is a public group
  82                         end
  83                         module:log("debug", "New group: %s", tostring(curr_group));
  84                         groups[curr_group] = groups[curr_group] or {};
  85                 else
  86                         -- Add JID
  87                         local jid = jid_prep(line);
  88                         if jid then
  89                                 module:log("debug", "New member of %s: %s", tostring(curr_group), tostring(jid));
  90                                 groups[curr_group][jid] = true;
  91                                 members[jid] = members[jid] or {};
  92                                 members[jid][#members[jid]+1] = curr_group;
  93                         end
  94                 end
  95         end
  96         module:log("info", "Groups loaded successfully");
  97 end
  98
  99 function module.unload()
 100         datamanager.remove_callback(remove_virtual_contacts);
 101 end