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local multitable = require "util.multitable";
local fire_event = prosody.events.fire_event;
--- Config
local default_interfaces = { "*" };
local default_local_interfaces = { "127.0.0.1" };
if config.get("*", "use_ipv6") 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";
elseif err == "no ssl context" then
if not config.get("*", "core", "ssl") then
friendly_message = "there is no 'ssl' config under Host \"*\" which is "
.."require for legacy SSL ports";
else
friendly_message = "initializing SSL support failed, see previous log entries";
end
end
return friendly_message;
end
module("portmanager", package.seeall);
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);
--- Public API
function activate_service(service_name)
local service_info = services[service_name][1];
if not service_info then
return nil, "Unknown service: "..service_name;
end
local bind_interfaces = set.new(config.get("*", service_name.."_interfaces")
or config.get("*", service_name.."_interface") -- COMPAT w/pre-0.9
or (service_info.private and default_local_interfaces)
or config.get("*", "interfaces")
or config.get("*", "interface") -- COMPAT w/pre-0.9
or service_info.default_interface -- COMPAT w/pre0.9
or default_interfaces);
local bind_ports = set.new(config.get("*", service_name.."_ports")
or (service_info.multiplex and config.get("*", "ports"))
or service_info.default_ports
or {service_info.default_port});
local listener = service_info.listener;
local mode = listener.default_mode or "*a";
local ssl;
if service_info.encryption == "ssl" then
ssl = prosody.global_ssl_ctx;
if not ssl then
return nil, "global-ssl-context-required";
end
end
for interface in bind_interfaces do
for port in bind_ports do
if not service_info.multiplex and #active_services:search(nil, interface, port) > 0 then
log("error", "Multiple services configured to listen on the same port: %s, %s", table.concat(active_services:search(nil, interface, port), ", "), service_name);
else
local handler, err = server.addserver(interface, port, listener, mode, ssl);
if not handler then
log("error", "Failed to open server port %d on %s, %s", port, interface, error_to_friendly_message(service_name, port, err));
else
log("debug", "Added listening service %s to [%s]:%d", service_name, interface, port);
active_services:add(service_name, interface, port, {
server = handler;
service = service_info;
});
end
end
end
end
log("info", "Activated service '%s'", service_name);
return true;
end
function deactivate(service_name)
local active = active_services:search(service_name)[1];
if not active then return; end
for interface, ports in pairs(active) do
for port, active_service in pairs(ports) do
active_service:close();
active_services:remove(service_name, interface, port, active_service);
log("debug", "Removed listening service %s from [%s]:%d", service_name, interface, port);
end
end
log("info", "Deactivated service '%s'", service_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(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)
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
if active_services[service_name] == service_info then
deactivate(service_name);
if #service_info_list > 0 then -- Other services registered with this name
activate(service_name); -- Re-activate with the next available one
end
end
end
function get_service(service_name)
return services[service_name];
end
function get_active_services(...)
return active_services;
end
return _M;
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