plugins/mod_roster.lua

   1 -- Prosody IM v0.4
   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
  11 local st = require "util.stanza"
  12
  13 local jid_split = require "util.jid".split;
  14 local t_concat = table.concat;
  15
  16 local handle_presence = require "core.presencemanager".handle_presence;
  17 local rm_remove_from_roster = require "core.rostermanager".remove_from_roster;
  18 local rm_add_to_roster = require "core.rostermanager".add_to_roster;
  19 local rm_roster_push = require "core.rostermanager".roster_push;
  20 local core_route_stanza = core_route_stanza;
  21
  22 module:add_feature("jabber:iq:roster");
  23
  24 module:add_iq_handler("c2s", "jabber:iq:roster",
  25                 function (session, stanza)
  26                         if stanza.tags[1].name == "query" then
  27                                 if stanza.attr.type == "get" then
  28                                         local roster = st.reply(stanza)
  29                                                                 :query("jabber:iq:roster");
  30                                         for jid in pairs(session.roster) do
  31                                                 if jid ~= "pending" then
  32                                                         roster:tag("item", {
  33                                                                 jid = jid,
  34                                                                 subscription = session.roster[jid].subscription,
  35                                                                 ask = session.roster[jid].ask,
  36                                                                 name = session.roster[jid].name,
  37                                                         });
  38                                                         for group in pairs(session.roster[jid].groups) do
  39                                                                 roster:tag("group"):text(group):up();
  40                                                         end
  41                                                         roster:up(); -- move out from item
  42                                                 end
  43                                         end
  44                                         session.send(roster);
  45                                         session.interested = true; -- resource is interested in roster updates
  46                                         return true;
  47                                 elseif stanza.attr.type == "set" then
  48                                         local query = stanza.tags[1];
  49                                         if #query.tags == 1 and query.tags[1].name == "item"
  50                                                         and query.tags[1].attr.xmlns == "jabber:iq:roster" and query.tags[1].attr.jid
  51                                                         and query.tags[1].attr.jid ~= "pending" then
  52                                                 local item = query.tags[1];
  53                                                 local from_node, from_host = jid_split(stanza.attr.from);
  54                                                 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
  55                                                 local node, host, resource = jid_split(item.attr.jid);
  56                                                 local to_bare = node and (node.."@"..host) or host; -- bare JID
  57                                                 if not resource and host then
  58                                                         if item.attr.jid ~= from_node.."@"..from_host then
  59                                                                 if item.attr.subscription == "remove" then
  60                                                                         local r_item = session.roster[item.attr.jid];
  61                                                                         if r_item then
  62                                                                                 local success, err_type, err_cond, err_msg = rm_remove_from_roster(session, item.attr.jid);
  63                                                                                 if success then
  64                                                                                         session.send(st.reply(stanza));
  65                                                                                         rm_roster_push(from_node, from_host, item.attr.jid);
  66                                                                                         if r_item.subscription == "both" or r_item.subscription == "from" then
  67                                                                                                 handle_presence(session, st.presence({type="unsubscribed"}), from_bare, to_bare,
  68                                                                                                         core_route_stanza, false);
  69                                                                                         elseif r_item.subscription == "both" or r_item.subscription == "to" then
  70                                                                                                 handle_presence(session, st.presence({type="unsubscribe"}), from_bare, to_bare,
  71                                                                                                         core_route_stanza, false);
  72                                                                                         end
  73                                                                                 else
  74                                                                                         session.send(st.error_reply(stanza, err_type, err_cond, err_msg));
  75                                                                                 end
  76                                                                         else
  77                                                                                 session.send(st.error_reply(stanza, "modify", "item-not-found"));
  78                                                                         end
  79                                                                 else
  80                                                                         local r_item = {name = item.attr.name, groups = {}};
  81                                                                         if r_item.name == "" then r_item.name = nil; end
  82                                                                         if session.roster[item.attr.jid] then
  83                                                                                 r_item.subscription = session.roster[item.attr.jid].subscription;
  84                                                                                 r_item.ask = session.roster[item.attr.jid].ask;
  85                                                                         else
  86                                                                                 r_item.subscription = "none";
  87                                                                         end
  88                                                                         for _, child in ipairs(item) do
  89                                                                                 if child.name == "group" then
  90                                                                                         local text = t_concat(child);
  91                                                                                         if text and text ~= "" then
  92                                                                                                 r_item.groups[text] = true;
  93                                                                                         end
  94                                                                                 end
  95                                                                         end
  96                                                                         local success, err_type, err_cond, err_msg = rm_add_to_roster(session, item.attr.jid, r_item);
  97                                                                         if success then
  98                                                                                 session.send(st.reply(stanza));
  99                                                                                 rm_roster_push(from_node, from_host, item.attr.jid);
 100                                                                         else
 101                                                                                 session.send(st.error_reply(stanza, err_type, err_cond, err_msg));
 102                                                                         end
 103                                                                 end
 104                                                         else
 105                                                                 session.send(st.error_reply(stanza, "cancel", "not-allowed"));
 106                                                         end
 107                                                 else
 108                                                         session.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME what's the correct error?
 109                                                 end
 110                                         else
 111                                                 session.send(st.error_reply(stanza, "modify", "bad-request"));
 112                                         end
 113                                         return true;
 114                                 end
 115                         end
 116                 end);