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-- Minetest: builtin/auth.lua
--
-- Builtin authentication handler
--
-- Make the auth object private, deny access to mods
local core_auth = core.auth
core.auth = nil
core.builtin_auth_handler = {
get_auth = function(name)
assert(type(name) == "string")
local auth_entry = core_auth.read(name)
-- If no such auth found, return nil
if not auth_entry then
return nil
end
-- Figure out what privileges the player should have.
-- Take a copy of the privilege table
local privileges = {}
for priv, _ in pairs(auth_entry.privileges) do
privileges[priv] = true
end
-- If singleplayer, give all privileges except those marked as give_to_singleplayer = false
if core.is_singleplayer() then
for priv, def in pairs(core.registered_privileges) do
if def.give_to_singleplayer then
privileges[priv] = true
end
end
-- For the admin, give everything
elseif name == core.settings:get("name") then
for priv, def in pairs(core.registered_privileges) do
if def.give_to_admin then
privileges[priv] = true
end
end
end
-- All done
return {
password = auth_entry.password,
privileges = privileges,
-- Is set to nil if unknown
last_login = auth_entry.last_login,
}
end,
create_auth = function(name, password)
assert(type(name) == "string")
assert(type(password) == "string")
core.log('info', "Built-in authentication handler adding player '"..name.."'")
return core_auth.create({
name = name,
password = password,
privileges = core.string_to_privs(core.settings:get("default_privs")),
last_login = os.time(),
})
end,
delete_auth = function(name)
assert(type(name) == "string")
local auth_entry = core_auth.read(name)
if not auth_entry then
return false
end
core.log('info', "Built-in authentication handler deleting player '"..name.."'")
return core_auth.delete(name)
end,
set_password = function(name, password)
assert(type(name) == "string")
assert(type(password) == "string")
local auth_entry = core_auth.read(name)
if not auth_entry then
core.builtin_auth_handler.create_auth(name, password)
else
core.log('info', "Built-in authentication handler setting password of player '"..name.."'")
auth_entry.password = password
core_auth.save(auth_entry)
end
return true
end,
set_privileges = function(name, privileges)
assert(type(name) == "string")
assert(type(privileges) == "table")
local auth_entry = core_auth.read(name)
if not auth_entry then
auth_entry = core.builtin_auth_handler.create_auth(name,
core.get_password_hash(name,
core.settings:get("default_password")))
end
-- Run grant callbacks
for priv, _ in pairs(privileges) do
if not auth_entry.privileges[priv] then
core.run_priv_callbacks(name, priv, nil, "grant")
end
end
-- Run revoke callbacks
for priv, _ in pairs(auth_entry.privileges) do
if not privileges[priv] then
core.run_priv_callbacks(name, priv, nil, "revoke")
end
end
auth_entry.privileges = privileges
core_auth.save(auth_entry)
core.notify_authentication_modified(name)
end,
reload = function()
core_auth.reload()
return true
end,
record_login = function(name)
assert(type(name) == "string")
local auth_entry = core_auth.read(name)
assert(auth_entry)
auth_entry.last_login = os.time()
core_auth.save(auth_entry)
end,
iterate = function()
local names = {}
local nameslist = core_auth.list_names()
for k,v in pairs(nameslist) do
names[v] = true
end
return pairs(names)
end,
}
core.register_on_prejoinplayer(function(name, ip)
if core.registered_auth_handler ~= nil then
return -- Don't do anything if custom auth handler registered
end
local auth_entry = core_auth.read(name)
if auth_entry ~= nil then
return
end
local name_lower = name:lower()
for k in core.builtin_auth_handler.iterate() do
if k:lower() == name_lower then
return string.format("\nCannot create new player called '%s'. "..
"Another account called '%s' is already registered. "..
"Please check the spelling if it's your account "..
"or use a different nickname.", name, k)
end
end
end)
--
-- Authentication API
--
function core.register_authentication_handler(handler)
if core.registered_auth_handler then
error("Add-on authentication handler already registered by "..core.registered_auth_handler_modname)
end
core.registered_auth_handler = handler
core.registered_auth_handler_modname = core.get_current_modname()
handler.mod_origin = core.registered_auth_handler_modname
end
function core.get_auth_handler()
return core.registered_auth_handler or core.builtin_auth_handler
end
local function auth_pass(name)
return function(...)
local auth_handler = core.get_auth_handler()
if auth_handler[name] then
return auth_handler[name](...)
end
return false
end
end
core.set_player_password = auth_pass("set_password")
core.set_player_privs = auth_pass("set_privileges")
core.remove_player_auth = auth_pass("delete_auth")
core.auth_reload = auth_pass("reload")
local record_login = auth_pass("record_login")
core.register_on_joinplayer(function(player)
record_login(player:get_player_name())
end)
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