2 -- Copyright (C) 2008-2010 Matthew Wild
3 -- Copyright (C) 2008-2010 Waqas Hussain
5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information.
11 local st = require "util.stanza"
13 local jid_split = require "util.jid".split;
14 local jid_prep = require "util.jid".prep;
15 local t_concat = table.concat;
16 local tostring = tostring;
18 local rm_remove_from_roster = require "core.rostermanager".remove_from_roster;
19 local rm_add_to_roster = require "core.rostermanager".add_to_roster;
20 local rm_roster_push = require "core.rostermanager".roster_push;
21 local core_post_stanza = core_post_stanza;
23 module:add_feature("jabber:iq:roster");
25 local rosterver_stream_feature = st.stanza("ver", {xmlns="urn:xmpp:features:rosterver"}):tag("optional"):up();
26 module:hook("stream-features", function(event)
27 local origin, features = event.origin, event.features;
28 if origin.username then
29 features:add_child(rosterver_stream_feature);
33 module:add_iq_handler("c2s", "jabber:iq:roster",
34 function (session, stanza)
35 if stanza.tags[1].name == "query" then
36 if stanza.attr.type == "get" then
37 local roster = st.reply(stanza);
39 local client_ver = tonumber(stanza.tags[1].attr.ver);
40 local server_ver = tonumber(session.roster[false].version or 1);
42 if not (client_ver and server_ver) or client_ver ~= server_ver then
43 roster:query("jabber:iq:roster");
44 -- Client does not support versioning, or has stale roster
45 for jid in pairs(session.roster) do
46 if jid ~= "pending" and jid then
49 subscription = session.roster[jid].subscription,
50 ask = session.roster[jid].ask,
51 name = session.roster[jid].name,
53 for group in pairs(session.roster[jid].groups) do
54 roster:tag("group"):text(group):up();
56 roster:up(); -- move out from item
59 roster.tags[1].attr.ver = server_ver;
62 session.interested = true; -- resource is interested in roster updates
64 elseif stanza.attr.type == "set" then
65 local query = stanza.tags[1];
66 if #query.tags == 1 and query.tags[1].name == "item"
67 and query.tags[1].attr.xmlns == "jabber:iq:roster" and query.tags[1].attr.jid
68 -- Protection against overwriting roster.pending, until we move it
69 and query.tags[1].attr.jid ~= "pending" then
70 local item = query.tags[1];
71 local from_node, from_host = jid_split(stanza.attr.from);
72 local from_bare = from_node and (from_node.."@"..from_host) or from_host; -- bare JID
73 local jid = jid_prep(item.attr.jid);
74 local node, host, resource = jid_split(jid);
75 if not resource and host then
76 if jid ~= from_node.."@"..from_host then
77 if item.attr.subscription == "remove" then
78 local roster = session.roster;
79 local r_item = roster[jid];
81 local to_bare = node and (node.."@"..host) or host; -- bare JID
82 if r_item.subscription == "both" or r_item.subscription == "from" or (roster.pending and roster.pending[jid]) then
83 core_post_stanza(session, st.presence({type="unsubscribed", from=session.full_jid, to=to_bare}));
85 if r_item.subscription == "both" or r_item.subscription == "to" or r_item.ask then
86 core_post_stanza(session, st.presence({type="unsubscribe", from=session.full_jid, to=to_bare}));
88 local success, err_type, err_cond, err_msg = rm_remove_from_roster(session, jid);
90 session.send(st.reply(stanza));
91 rm_roster_push(from_node, from_host, jid);
93 session.send(st.error_reply(stanza, err_type, err_cond, err_msg));
96 session.send(st.error_reply(stanza, "modify", "item-not-found"));
99 local r_item = {name = item.attr.name, groups = {}};
100 if r_item.name == "" then r_item.name = nil; end
101 if session.roster[jid] then
102 r_item.subscription = session.roster[jid].subscription;
103 r_item.ask = session.roster[jid].ask;
105 r_item.subscription = "none";
107 for _, child in ipairs(item) do
108 if child.name == "group" then
109 local text = t_concat(child);
110 if text and text ~= "" then
111 r_item.groups[text] = true;
115 local success, err_type, err_cond, err_msg = rm_add_to_roster(session, jid, r_item);
118 session.send(st.reply(stanza));
119 -- and push change to all resources
120 rm_roster_push(from_node, from_host, jid);
122 -- Adding to roster failed
123 session.send(st.error_reply(stanza, err_type, err_cond, err_msg));
127 -- Trying to add self to roster
128 session.send(st.error_reply(stanza, "cancel", "not-allowed"));
131 -- Invalid JID added to roster
132 session.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME what's the correct error?
135 -- Roster set didn't include a single item, or its name wasn't 'item'
136 session.send(st.error_reply(stanza, "modify", "bad-request"));