mod_posix: Move everything to util.startup
This allows greater control over the order of events.
Notably, the internal ordering between daemonization, initialization of
libunbound and setup of signal handling is sensitive.
libunbound starts a separate thread for processing DNS requests.
If this thread is started before signal handling has been set up, it
will not inherit the signal handlers and instead behave as it would have
before signal handlers were set up, i.e. cause the whole process to
immediately exit.
libunbound is usually initialized on the first DNS request, usually
triggered by an outgoing s2s connection attempt.
If daemonization happens before signals have been set up, signals may
not be processed at all.
-- Prosody IM
-- Copyright (C) 2008-2017 Matthew Wild
-- Copyright (C) 2008-2017 Waqas Hussain
-- Copyright (C) 2011-2017 Kim Alvefur
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
-- XEP-0313: Message Archive Management for Prosody
--
local stanza = require"prosody.util.stanza".stanza;
local tonumber = tonumber;
local s_format = string.format;
local type = type;
local pairs = pairs;
local function inttostr(n)
return s_format("%d", n);
end
local xmlns_rsm = 'http://jabber.org/protocol/rsm';
local element_parsers = {};
do
local parsers = element_parsers;
local function xs_int(st)
return tonumber((st:get_text()));
end
local function xs_string(st)
return st:get_text();
end
parsers.after = xs_string;
parsers.before = function(st)
local text = st:get_text();
return text == "" or text;
end;
parsers.max = xs_int;
parsers.index = xs_int;
parsers.first = function(st)
return { index = tonumber(st.attr.index); st:get_text() };
end;
parsers.last = xs_string;
parsers.count = xs_int;
end
local element_generators = setmetatable({
first = function(st, data)
if type(data) == "table" then
st:tag("first", { index = inttostr(data.index) }):text(data[1]):up();
else
st:text_tag("first", data);
end
end;
before = function(st, data)
if data == true then
st:tag("before"):up();
else
st:text_tag("before", data);
end
end;
max = function (st, data)
st:text_tag("max", inttostr(data));
end;
index = function (st, data)
st:text_tag("index", inttostr(data));
end;
count = function (st, data)
st:text_tag("count", inttostr(data));
end;
}, {
__index = function(_, name)
return function(st, data)
st:text_tag(name, data);
end
end;
});
local function parse(set)
local rs = {};
for tag in set:childtags() do
local name = tag.name;
local parser = name and element_parsers[name];
if parser then
rs[name] = parser(tag);
end
end
return rs;
end
local function generate(t)
local st = stanza("set", { xmlns = xmlns_rsm });
for k,v in pairs(t) do
if element_parsers[k] then
element_generators[k](st, v);
end
end
return st;
end
local function get(st)
local set = st:get_child("set", xmlns_rsm);
if set and #set.tags > 0 then
return parse(set);
end
end
return { parse = parse, generate = generate, get = get };