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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, TBOOX Open Source Group.
*
* @author TitanSnow
* @file uid.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "uid"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#ifndef TB_CONFIG_OS_WINDOWS
# include <unistd.h>
# include <errno.h>
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
#ifndef TB_CONFIG_OS_WINDOWS
// get & set uid
tb_int_t xm_os_uid(lua_State* lua)
{
// check
tb_assert_and_check_return_val(lua, 0);
tb_int_t ruidset = -1;
tb_int_t euidset = -1;
tb_int_t argc = lua_gettop(lua);
if (argc == 1)
{
if (lua_istable(lua, 1))
{
// os.uid({["ruid"] = ruid, ["euid"] = euid})
lua_getfield(lua, 1, "ruid");
lua_getfield(lua, 1, "euid");
if (!lua_isnil(lua, -1))
{
if (!lua_isnumber(lua, -1))
{
lua_pushfstring(lua, "invalid field type(%s) in `euid` for os.uid", luaL_typename(lua, -1));
lua_error(lua);
return 0;
}
euidset = (tb_int_t)lua_tonumber(lua, -1);
}
lua_pop(lua, 1);
if (!lua_isnil(lua, -1))
{
if (!lua_isnumber(lua, -1))
{
lua_pushfstring(lua, "invalid field type(%s) in `ruid` for os.uid", luaL_typename(lua, -1));
lua_error(lua);
return 0;
}
ruidset = (tb_int_t)lua_tonumber(lua, -1);
}
lua_pop(lua, 1);
}
else if (lua_isnumber(lua, 1))
{
// os.uid(uid)
ruidset = euidset = (tb_int_t)lua_tonumber(lua, 1);
}
else
{
lua_pushfstring(lua, "invalid argument type(%s) for os.uid", luaL_typename(lua, 1));
lua_error(lua);
return 0;
}
}
else if (argc == 2)
{
// os.uid(ruid, euid)
if (!lua_isnil(lua, 1))
{
if (!lua_isnumber(lua, 1))
{
lua_pushfstring(lua, "invalid argument type(%s) for os.uid", luaL_typename(lua, 1));
lua_error(lua);
return 0;
}
ruidset = (tb_int_t)lua_tonumber(lua, 1);
}
if (!lua_isnil(lua, 2))
{
if (!lua_isnumber(lua, 2))
{
lua_pushfstring(lua, "invalid argument type(%s) for os.uid", luaL_typename(lua, 2));
lua_error(lua);
return 0;
}
euidset = (tb_int_t)lua_tonumber(lua, 2);
}
}
else if (argc != 0)
{
lua_pushstring(lua, "invalid argument count for os.uid");
lua_error(lua);
return 0;
}
// store return value
lua_newtable(lua);
if (ruidset != -1 || euidset != -1)
{
// set ruid & euid
lua_pushstring(lua, "errno");
lua_pushinteger(lua, setreuid(ruidset, euidset) != 0 ? errno : 0);
lua_settable(lua, -3);
}
// get uid & euid
uid_t uid = getuid();
uid_t euid = geteuid();
// push
lua_pushstring(lua, "ruid");
lua_pushinteger(lua, uid);
lua_settable(lua, -3);
lua_pushstring(lua, "euid");
lua_pushinteger(lua, euid);
lua_settable(lua, -3);
// ok
return 1;
}
#endif
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