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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author TitanSnow
-- @file privilege.lua
--
-- define module
local privilege = privilege or {}
-- load modules
local os = require("base/os")
-- store privilege
function privilege.store()
-- check if root
if not os.isroot() then
return false
end
local owner = {}
-- sudo will set SUDO_UID & SUDO_GID
-- so that can easily get original uid & gid
local sudo_uid = os.getenv("SUDO_UID")
local sudo_gid = os.getenv("SUDO_GID")
if sudo_uid and sudo_gid then
owner.uid = sudo_uid
owner.gid = sudo_gid
else
-- find projectdir's owner
local projectdir = xmake._PROJECT_DIR
assert(projectdir)
owner = os.getown(projectdir)
if not owner then
-- fallback to current dir
owner = os.getown(os.curdir())
if not owner then
return false
end
end
end
-- set gid
if os.gid(owner.gid).errno ~= 0 then
return false
end
-- set uid
if os.uid({ruid = owner.uid}).errno ~= 0 or os.uid({euid = owner.uid}).errno ~= 0 then
return false
end
-- set flag
privilege._HAS_PRIVILEGE = true
-- ok
return true
end
-- check if has stored privilege
function privilege.has()
return privilege._HAS_PRIVILEGE or false
end
function privilege.get()
-- has?
if privilege._HAS_PRIVILEGE ~= true then
return false
end
-- set uid
if os.uid({euid = 0}).errno ~= 0 or os.uid({ruid = 0}).errno ~= 0 then
return false
end
-- set gid
if os.gid(0).errno ~= 0 then
return false
end
return true
end
-- return module
return privilege
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