net.server_epoll: Add support for systemd socket activation
Allows creating listening sockets and accepting client connections
before Prosody starts.
This is unlike normal Prosody dynamic resource management, where ports
may added and removed at any time, and the ports defined by the config.
Weird things happen if these are closed (e.g. due to reload) so here we
prevent closing and ensure sockets are reused when opened again.
-- Generate util/dnsregistry.lua from IANA HTTP status code registry
if not pcall(require, "prosody.loader") then
pcall(require, "loader");
end
local xml = require "prosody.util.xml";
local registries = xml.parse(io.read("*a"), { allow_processing_instructions = true });
print("-- Source: https://www.iana.org/assignments/dns-parameters/dns-parameters.xml");
print(os.date("-- Generated on %Y-%m-%d"))
local registry_mapping = {
["dns-parameters-2"] = "classes";
["dns-parameters-4"] = "types";
["dns-parameters-6"] = "errors";
};
print("return {");
for registry in registries:childtags("registry") do
local registry_name = registry_mapping[registry.attr.id];
if registry_name then
print("\t" .. registry_name .. " = {");
for record in registry:childtags("record") do
local record_name = record:get_child_text("name");
local record_type = record:get_child_text("type");
local record_desc = record:get_child_text("description");
local record_code = tonumber(record:get_child_text("value"));
if tostring(record):lower():match("reserved") or tostring(record):lower():match("unassigned") then
record_code = nil;
end
if registry_name == "classes" and record_code then
record_type = record_desc and record_desc:match("%((%w+)%)$")
if record_type then
print(("\t\t[%q] = %d; [%d] = %q;"):format(record_type, record_code, record_code, record_type))
end
elseif registry_name == "types" and record_type and record_code then
print(("\t\t[%q] = %d; [%d] = %q;"):format(record_type, record_code, record_code, record_type))
elseif registry_name == "errors" and record_code and record_name then
print(("\t\t[%d] = %q; [%q] = %q;"):format(record_code, record_name, record_name, record_desc or record_name));
end
end
print("\t};");
end
end
print("};");