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add lua API for envar manipulating and home dir query

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DanyLE 2022-08-22 20:37:10 +02:00
parent dfb550308d
commit 1cc681c7e8
1 changed files with 78 additions and 0 deletions
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78
lib/asl/ulib.c
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@ -622,6 +622,80 @@ static int l_zip(lua_State* L)
lua_pushboolean(L,0);
return 1;
}
static int l_getenv(lua_State* L)
{
const char* name = luaL_checkstring(L,1);
if(!name)
{
lua_pushnil(L);
return 1;
}
char * value = getenv(name);
lua_pushstring(L, value);
return 1;
}
static int l_setenv(lua_State* L)
{
const char* name = luaL_checkstring(L,1);
const char* value = luaL_checkstring(L,2);
const int force = luaL_checknumber(L,3);
if(!name)
{
lua_pushboolean(L, 0);
return 1;
}
if(!value)
{
lua_pushboolean(L, 0);
return 1;
}
int ret = setenv(name, value, force);
if(ret != 0)
{
lua_pushboolean(L, 0);
return 1;
}
lua_pushboolean(L,1);
return 1;
}
static int l_unsetenv(lua_State* L)
{
const char* name = luaL_checkstring(L,1);
if(!name)
{
lua_pushboolean(L, 0);
return 1;
}
int ret = unsetenv(name);
if(ret != 0)
{
lua_pushboolean(L, 0);
return 1;
}
lua_pushboolean(L,1);
return 1;
}
static int l_gethomedir(lua_State* L)
{
uid_t uid = (uid_t) luaL_checknumber(L,1);
if(uid < 0)
{
lua_pushnil(L);
return 1;
}
struct passwd *pw = getpwuid(uid);
if (pw == NULL) {
lua_pushnil(L);
return 1;
}
lua_pushstring(L, pw->pw_dir);
return 1;
}
static const struct luaL_Reg _lib [] = {
{"auth", l_check_login},
@ -643,6 +717,10 @@ static const struct luaL_Reg _lib [] = {
{"move",l_file_move},
{"unzip",l_unzip},
{"zip",l_zip},
{"getenv",l_getenv},
{"setenv",l_setenv},
{"unsetenv",l_unsetenv},
{"home_dir",l_gethomedir},
{NULL,NULL}
};