DGNum/libubox
6
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

lua/uloop: fd_add() better args checking

Browse source 
Actually check for flags being valid, instead of simply ignoring the
call if flags was zero.

Use standard lua checks for the function argument, so you can get a
normal "argument #2 was invalid, expected function, got xxx" instead of
the vague, "invalid arg list"

Signed-off-by: Karl Palsson <karlp@etactica.com>
This commit is contained in:
Karl Palsson 2020-06-30 10:38:41 +00:00 committed by Petr Štetiar
parent e85cb73976
commit 161c25960b
1 changed files with 7 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
lua/uloop.c
View file

@ -232,17 +232,14 @@ static int ul_ufd_add(lua_State *L)
int ref;
int fd_ref;
if (lua_isnumber(L, -1)) {
flags = lua_tointeger(L, -1);
lua_pop(L, 1);
}
if (!lua_isfunction(L, -1)) {
lua_pushstring(L, "invalid arg list");
flags = luaL_checkinteger(L, -1);
if (!flags) {
lua_pushstring(L, "flags cannot be zero");
lua_error(L);
return 0;
}
lua_pop(L, 1);
luaL_checktype(L, -1, LUA_TFUNCTION);
fd = get_sock_fd(L, -2);
@ -261,7 +258,6 @@ static int ul_ufd_add(lua_State *L)
ufd->fd.fd = fd;
ufd->fd_r = fd_ref;
ufd->fd.cb = ul_ufd_cb;
if (flags)
uloop_fd_add(&ufd->fd, flags);
return 1;