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Address set_player_privs footgun (#14297)

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Co-authored-by: grorp <gregor.parzefall@posteo.de>
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Lars Müller 2024-01-22 20:06:03 +01:00 committed by GitHub
parent 5958714309
commit afc48cf224
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GPG Key ID: B5690EEEBB952194
2 changed files with 40 additions and 6 deletions
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26
builtin/game/auth.lua
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@ -92,8 +92,16 @@ core.builtin_auth_handler = {
core_auth.save(auth_entry)
-- Run grant callbacks
for priv, _ in pairs(privileges) do
for priv, value in pairs(privileges) do
-- Warnings for improper API usage
if value == false then
core.log('deprecated', "`false` value given to `minetest.set_player_privs`, "..
"this is almost certainly a bug, "..
"granting a privilege rather than revoking it")
elseif value ~= true then
core.log('deprecated', "non-`true` value given to `minetest.set_player_privs`")
end
-- Run grant callbacks
if not prev_privs[priv] then
core.run_priv_callbacks(name, priv, nil, "grant")
end
@ -180,6 +188,20 @@ core.set_player_privs = auth_pass("set_privileges")
core.remove_player_auth = auth_pass("delete_auth")
core.auth_reload = auth_pass("reload")
function core.change_player_privs(name, changes)
local privs = core.get_player_privs(name)
for priv, change in pairs(changes) do
if change == true then
privs[priv] = true
elseif change == false then
privs[priv] = nil
else
error("non-bool value given to `minetest.change_player_privs`")
end
end
core.set_player_privs(name, privs)
end
local record_login = auth_pass("record_login")
core.register_on_joinplayer(function(player)
record_login(player:get_player_name())

20
doc/lua_api.md
View File

@ -5841,8 +5841,20 @@ Authentication
* `name`: string; if omitted, all auth data should be considered modified
* `minetest.set_player_password(name, password_hash)`: Set password hash of
player `name`.
* `minetest.set_player_privs(name, {priv1=true,...})`: Set privileges of player
`name`.
* `minetest.set_player_privs(name, privs)`: Set privileges of player `name`.
* `privs` is a **set** of privileges:
A table where the keys are names of privileges and the values are `true`.
* Example: `minetest.set_player_privs("singleplayer", {interact = true, fly = true})`.
This **sets** the player privileges to `interact` and `fly`;
`singleplayer` will only have these two privileges afterwards.
* `minetest.change_player_privs(name, changes)`: Helper to grant or revoke privileges.
* `changes`: Table of changes to make.
A field `[privname] = true` grants a privilege,
whereas `[privname] = false` revokes a privilege.
* Example: `minetest.change_player_privs("singleplayer", {interact = true, fly = false})`
will grant singleplayer the `interact` privilege
and revoke singleplayer's `fly` privilege.
All other privileges will remain unchanged.
* `minetest.auth_reload()`
* See `reload()` in authentication handler definition
@ -10745,8 +10757,8 @@ Used by `minetest.register_authentication_handler`.
set_privileges = function(name, privileges),
-- Set privileges of player `name`.
-- `privileges` is in table form, auth data should be created if not
-- present.
-- `privileges` is in table form: keys are privilege names, values are `true`;
-- auth data should be created if not present.
reload = function(),
-- Reload authentication data from the storage location.