File

+
−module:set_global();
+
−
+
−local config = require "core.configmanager";
+
−local argparse = require "util.argparse";
+
−local dns = require"net.adns".resolver();
+
−local async = require "util.async";
+
−local set = require "util.set";
+
−local nameprep = require"util.encodings".stringprep.nameprep;
+
−local idna_to_ascii = require"util.encodings".idna.to_ascii;
+
−
+
−local virtualhost_services = { "xmpp-client"; "xmpps-client"; "xmpp-server"; "xmpps-server" }
+
−local component_services = { "xmpp-server"; "xmpps-server" }
+
−
+
−local function validate_dnsname_option(options, option_name, default)
+
−	local host = options[option_name];
+
−	if host == nil then return default end
+
−	local normalized = nameprep(host);
+
−	if not normalized then
+
−		module:log("error", "--%s %q fails normalization");
+
−		return;
+
−	end
+
−	local alabel = idna_to_ascii(normalized);
+
−	if not alabel then
+
−		module:log("error", "--%s %q fails IDNA");
+
−		return;
+
−	end
+
−	return alabel;
+
−end
+
−
+
−function module.command(arg)
+
−	local opts = argparse.parse(arg, {
+
−		short_params = { d = "domain"; p = "primary"; t = "target"; l = "ttl"; h = "help"; ["?"] = "help" };
+
−		value_params = { domain = true; primary = true; target = true; ttl = true };
+
−	});
+
−
+
−	if not arg[1] or arg[2] or not opts or opts.help or not opts.domain then
+
−		local out = opts.help and io.stdout or io.stderr;
+
−		out:write("prosodyctl mod_dnsupdate [options] virtualhost\n");
+
−		out:write("\t-d --domain\tbase domain name *required*\n");
+
−		out:write("\t-p --primary\tprimary DNS name server\n");
+
−		out:write("\t-t --target\ttarget hostname for SRV\n");
+
−		out:write("\t-l --ttl\tTTL to use\n");
+
−		out:write("\t--each\tremove and replace individual SRV records\n");
+
−		out:write("\t--reset\tremove and replace all SRV records\n");
+
−		out:write("\t--remove\tremove all SRV records\n");
+
−		return opts and opts.help and 0 or 1;
+
−	end
+
−
+
−	local vhost = nameprep(arg[1]); -- TODO loop over arg[]?
+
−	if not vhost then
+
−		module:log("error", "Host %q fails normalization", arg[1]);
+
−		return 1;
+
−	end
+
−	local ihost = idna_to_ascii(vhost);
+
−	if not ihost then
+
−		module:log("error", "Host %q fails IDNA", vhost);
+
−		return 1;
+
−	end
+
−	local is_component = config.get(vhost, "component_module");
+
−	if not is_component and not config.get(vhost, "defined") then
+
−		module:log("error", "Host %q is not defined in the config", vhost);
+
−		return 1;
+
−	end
+
−
+
−	local services = virtualhost_services;
+
−	if is_component then services = component_services; end
+
−
+
−	local domain = validate_dnsname_option(opts, "domain");
+
−	if not domain then
+
−		module:log("error", "--domain is required");
+
−		return 1;
+
−	end
+
−	local primary = validate_dnsname_option(opts, "primary")
+
−		or async.wait_for(dns:lookup_promise(domain, "SOA"):next(function(ret) return ret[1].soa.mname; end));
+
−	if not primary then
+
−		module:log("error", "Could not discover primary name server, specify it with --primary");
+
−		return 1;
+
−	end
+
−	local target = validate_dnsname_option(opts, "target", module:context(vhost):get_option_string("xmpp_host", ihost));
+
−	-- TODO validate that target has A/AAAA
+
−
+
−	local configured_ports = {
+
−		["xmpp-client"] = module:get_option_array("c2s_ports", { 5222 });
+
−		["xmpp-server"] = module:get_option_array("s2s_ports", { 5269 });
+
−		["xmpps-client"] = module:get_option_array("c2s_direct_tls_ports", {});
+
−		["xmpps-server"] = module:get_option_array("s2s_direct_tls_ports", {});
+
−	};
+
−
+
−	if opts.multiplex then
+
−		for opt, ports in pairs(configured_ports) do
+
−			ports:append(module:get_option_array(opt:sub(1, 5) == "xmpps" and "ssl_ports" or "ports", {}));
+
−		end
+
−	end
+
−
+
−	local existing_srv = {};
+
−	for _, service in ipairs(services) do
+
−		existing_srv[service] = dns:lookup_promise(("_%s._tcp.%s"):format(service, ihost), "SRV");
+
−	end
+
−
+
−	print("zone", domain);
+
−	print("server", primary);
+
−	print("ttl " .. tostring(opts.ttl or 60 * 60));
+
−
+
−	for _, service in ipairs(services) do
+
−		local ports = set.new(configured_ports[service]);
+
−		local records = (async.wait_for(existing_srv[service]));
+
−		if opts.remove or opts.reset then
+
−			print(("del _%s._tcp.%s IN SRV"):format(service, ihost));
+
−		else
+
−			for _, rr in ipairs(records) do
+
−				if ports:contains(rr.srv.port) and target == nameprep(rr.srv.target):gsub("%.$", "") then
+
−					ports:remove(rr.srv.port)
+
−				elseif not opts.each then
+
−					print(("del _%s._tcp.%s IN SRV"):format(service, ihost));
+
−					break
+
−				else
+
−					print(("del _%s._tcp.%s IN SRV %s"):format(service, ihost, rr));
+
−				end
+
−			end
+
−		end
+
−		if not opts.remove then
+
−			for port in ports do print(("add _%s._tcp.%s IN SRV 1 1 %d %s"):format(service, ihost, port, target)); end
+
−		end
+
−		if ports:empty() then print(("add _%s._tcp.%s IN SRV 0 0 0 ."):format(service, ihost)); end
+
−	end
+
−
+
−	print("show");
+
−	print("send");
+
−	print("answer");
+
−end