util.signal: Add support for signalfd(2) on Linux
signalfd allows handling signal events using the same method as sockets,
via file descriptors. Thus all signal dispatch can go through the same
main event loop as everything else, removing need for thread-scary
signal handling where execution would just jump to the signal handler
regardless of the state of Lua, and needing to keep track of Lua
states/threads.
-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local st = require "prosody.util.stanza"
local jid_split = require "prosody.util.jid".split;
local vcards = module:open_store();
module:add_feature("vcard-temp");
local function handle_vcard(event)
local session, stanza = event.origin, event.stanza;
local to = stanza.attr.to;
if stanza.attr.type == "get" then
local vCard;
if to then
local node = jid_split(to);
vCard = st.deserialize(vcards:get(node)); -- load vCard for user or server
else
vCard = st.deserialize(vcards:get(session.username));-- load user's own vCard
end
if vCard then
session.send(st.reply(stanza):add_child(vCard)); -- send vCard!
else
session.send(st.error_reply(stanza, "cancel", "item-not-found"));
end
else -- stanza.attr.type == "set"
if not to then
if vcards:set(session.username, st.preserialize(stanza.tags[1])) then
session.send(st.reply(stanza));
else
-- TODO unable to write file, file may be locked, etc, what's the correct error?
session.send(st.error_reply(stanza, "wait", "internal-server-error"));
end
else
session.send(st.error_reply(stanza, "auth", "forbidden"));
end
end
return true;
end
module:hook("iq/bare/vcard-temp:vCard", handle_vcard);
module:hook("iq/host/vcard-temp:vCard", handle_vcard);