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.
-- XEP-0157: Contact Addresses for XMPP Services for Prosody
--
-- Copyright (C) 2011-2018 Kim Alvefur
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
local array = require "prosody.util.array";
local jid = require "prosody.util.jid";
local url = require "socket.url";
module:depends("server_info");
-- Source: http://xmpp.org/registrar/formtypes.html#http:--jabber.org-network-serverinfo
local address_types = {
abuse = "abuse-addresses";
admin = "admin-addresses";
feedback = "feedback-addresses";
sales = "sales-addresses";
security = "security-addresses";
status = "status-addresses";
support = "support-addresses";
};
-- JIDs of configured service admins are used as fallback
local admins = module:get_option_inherited_set("admins", {});
local contact_config = module:get_option("contact_info", {
admin = array.collect(admins / jid.prep / function(admin) return url.build({scheme = "xmpp"; path = admin}); end);
});
local fields = {};
for key, field_var in pairs(address_types) do
if contact_config[key] then
table.insert(fields, {
type = "list-multi";
name = key;
var = field_var;
value = contact_config[key];
});
end
end
module:add_item("server-info-fields", fields);