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.
local initialize_filters = require "prosody.util.filters".initialize;
local time = require "prosody.util.time";
local logger = require "prosody.util.logger";
local function new_session(typ)
local session = {
type = typ .. "_unauthed";
base_type = typ;
since = time.now();
};
return session;
end
local function set_id(session)
local id = session.base_type .. tostring(session):match("%x+$"):lower();
session.id = id;
return session;
end
local function set_logger(session)
local log = logger.init(session.id);
session.log = log;
return session;
end
local function set_conn(session, conn)
session.conn = conn;
session.ip = conn:ip();
return session;
end
local function set_send(session)
local conn = session.conn;
if not conn then
function session.send(data)
session.log("debug", "Discarding data sent to unconnected session: %s", data);
return false;
end
return session;
end
local filter = initialize_filters(session);
local w = conn.write;
session.send = function (t)
if t.name then
t = filter("stanzas/out", t);
end
if t then
t = filter("bytes/out", tostring(t));
if t then
local ret, err = w(conn, t);
if not ret then
session.log("debug", "Error writing to connection: %s", err);
return false, err;
end
end
end
return true;
end
return session;
end
local function set_role(session, role)
session.role = role;
end
return {
new = new_session;
set_id = set_id;
set_logger = set_logger;
set_conn = set_conn;
set_send = set_send;
set_role = set_role;
}