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local config = require "core.configmanager";
local certmanager = require "core.certmanager";
local server = require "net.server";
local socket = require "socket";
local log = require "util.logger".init("portmanager");
local multitable = require "util.multitable";
local set = require "util.set";
local table = table;
local setmetatable, rawset, rawget = setmetatable, rawset, rawget;
local type, tonumber, tostring, ipairs, pairs = type, tonumber, tostring, ipairs, pairs;
local prosody = prosody;
local fire_event = prosody.events.fire_event;
module "portmanager";
--- Config
local default_interfaces = { };
local default_local_interfaces = { };
if config.get("*", "use_ipv4") ~= false then
table.insert(default_interfaces, "*");
table.insert(default_local_interfaces, "127.0.0.1");
end
if socket.tcp6 and config.get("*", "use_ipv6") ~= false then
table.insert(default_interfaces, "::");
table.insert(default_local_interfaces, "::1");
end
--- Private state
-- service_name -> { service_info, ... }
local services = setmetatable({}, { __index = function (t, k) rawset(t, k, {}); return rawget(t, k); end });
-- service_name, interface (string), port (number)
local active_services = multitable.new();
--- Private helpers
local function error_to_friendly_message(service_name, port, err)
local friendly_message = err;
if err:match(" in use") then
-- FIXME: Use service_name here
if port == 5222 or port == 5223 or port == 5269 then
friendly_message = "check that Prosody or another XMPP server is "
.."not already running and using this port";
elseif port == 80 or port == 81 then
friendly_message = "check that a HTTP server is not already using "
.."this port";
elseif port == 5280 then
friendly_message = "check that Prosody or a BOSH connection manager "
.."is not already running";
else
friendly_message = "this port is in use by another application";
end
elseif err:match("permission") then
friendly_message = "Prosody does not have sufficient privileges to use this port";
end
return friendly_message;
end
prosody.events.add_handler("item-added/net-provider", function (event)
local item = event.item;
register_service(item.name, item);
end);
prosody.events.add_handler("item-removed/net-provider", function (event)
local item = event.item;
unregister_service(item.name, item);
end);
local function duplicate_ssl_config(ssl_config)
local ssl_config = type(ssl_config) == "table" and ssl_config or {};
local _config = {};
for k, v in pairs(ssl_config) do
_config[k] = v;
end
return _config;
end
--- Public API
function activate(service_name)
local service_info = services[service_name][1];
if not service_info then
return nil, "Unknown service: "..service_name;
end
local listener = service_info.listener;
local config_prefix = (service_info.config_prefix or service_name).."_";
if config_prefix == "_" then
config_prefix = "";
end
local bind_interfaces = config.get("*", config_prefix.."interfaces")
or config.get("*", config_prefix.."interface") -- COMPAT w/pre-0.9
or (service_info.private and (config.get("*", "local_interfaces") or default_local_interfaces))
or config.get("*", "interfaces")
or config.get("*", "interface") -- COMPAT w/pre-0.9
or listener.default_interface -- COMPAT w/pre0.9
or default_interfaces
bind_interfaces = set.new(type(bind_interfaces)~="table" and {bind_interfaces} or bind_interfaces);
local bind_ports = config.get("*", config_prefix.."ports")
or service_info.default_ports
or {service_info.default_port
or listener.default_port -- COMPAT w/pre-0.9
}
bind_ports = set.new(type(bind_ports) ~= "table" and { bind_ports } or bind_ports );
local mode, ssl = listener.default_mode or "*a";
local hooked_ports = {};
for interface in bind_interfaces do
for port in bind_ports do
local port_number = tonumber(port);
if not port_number then
log("error", "Invalid port number specified for service '%s': %s", service_info.name, tostring(port));
elseif #active_services:search(nil, interface, port_number) > 0 then
log("error", "Multiple services configured to listen on the same port ([%s]:%d): %s, %s", interface, port, active_services:search(nil, interface, port)[1][1].service.name or "<unnamed>", service_name or "<unnamed>");
else
local err;
-- Create SSL context for this service/port
if service_info.encryption == "ssl" then
local ssl_config = duplicate_ssl_config((config.get("*", config_prefix.."ssl") and config.get("*", config_prefix.."ssl")[interface])
or (config.get("*", config_prefix.."ssl") and config.get("*", config_prefix.."ssl")[port])
or config.get("*", config_prefix.."ssl")
or (config.get("*", "ssl") and config.get("*", "ssl")[interface])
or (config.get("*", "ssl") and config.get("*", "ssl")[port])
or config.get("*", "ssl"));
-- add default entries for, or override ssl configuration
if ssl_config and service_info.ssl_config then
for key, value in pairs(service_info.ssl_config) do
if not service_info.ssl_config_override and not ssl_config[key] then
ssl_config[key] = value;
elseif service_info.ssl_config_override then
ssl_config[key] = value;
end
end
end
ssl, err = certmanager.create_context(service_info.name.." port "..port, "server", ssl_config);
if not ssl then
log("error", "Error binding encrypted port for %s: %s", service_info.name, error_to_friendly_message(service_name, port_number, err) or "unknown error");
end
end
if not err then
-- Start listening on interface+port
local handler, err = server.addserver(interface, port_number, listener, mode, ssl);
if not handler then
log("error", "Failed to open server port %d on %s, %s", port_number, interface, error_to_friendly_message(service_name, port_number, err));
else
table.insert(hooked_ports, port_number);
log("debug", "Added listening service %s to [%s]:%d", service_name, interface, port_number);
active_services:add(service_name, interface, port_number, {
server = handler;
service = service_info;
});
end
end
end
end
end
log("info", "Activated service '%s' on %s", service_name, #hooked_ports == 0 and "no ports" or table.concat(hooked_ports, ", "));
return true;
end
function deactivate(service_name, service_info)
for name, interface, port, n, active_service
in active_services:iter(service_name or service_info and service_info.name, nil, nil, nil) do
if service_info == nil or active_service.service == service_info then
close(interface, port);
end
end
log("info", "Deactivated service '%s'", service_name or service_info.name);
end
function register_service(service_name, service_info)
table.insert(services[service_name], service_info);
if not active_services:get(service_name) then
log("debug", "No active service for %s, activating...", service_name);
local ok, err = activate(service_name);
if not ok then
log("error", "Failed to activate service '%s': %s", service_name, err or "unknown error");
end
end
fire_event("service-added", { name = service_name, service = service_info });
return true;
end
function unregister_service(service_name, service_info)
log("debug", "Unregistering service: %s", service_name);
local service_info_list = services[service_name];
for i, service in ipairs(service_info_list) do
if service == service_info then
table.remove(service_info_list, i);
end
end
deactivate(nil, service_info);
if #service_info_list > 0 then -- Other services registered with this name
activate(service_name); -- Re-activate with the next available one
end
fire_event("service-removed", { name = service_name, service = service_info });
end
function close(interface, port)
local service, server = get_service_at(interface, port);
if not service then
return false, "port-not-open";
end
server:close();
active_services:remove(service.name, interface, port);
log("debug", "Removed listening service %s from [%s]:%d", service.name, interface, port);
return true;
end
function get_service_at(interface, port)
local data = active_services:search(nil, interface, port)[1][1];
return data.service, data.server;
end
function get_service(service_name)
return (services[service_name] or {})[1];
end
function get_active_services(...)
return active_services;
end
function get_registered_services()
return services;
end
return _M;
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