Software / code / prosody
Changeset
9447:6397e965a22d
net.poll: Guard against negative or too large FDs
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sun, 07 Oct 2018 18:44:46 +0200 |
| parents | 9446:6b4d28eb19cf |
| children | 9448:352e8b75c1ae |
| files | util-src/poll.c |
| diffstat | 1 files changed, 14 insertions(+), 0 deletions(-) [+] |
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--- a/util-src/poll.c Sun Oct 07 18:41:44 2018 +0200 +++ b/util-src/poll.c Sun Oct 07 18:44:46 2018 +0200 @@ -66,6 +66,13 @@ int wantread = lua_toboolean(L, 3); int wantwrite = lua_toboolean(L, 4); + if(fd < 0) { + lua_pushnil(L); + lua_pushstring(L, strerror(EBADF)); + lua_pushinteger(L, EBADF); + return 3; + } + #ifdef USE_EPOLL struct epoll_event event; event.data.fd = fd; @@ -88,6 +95,13 @@ #else + if(fd > FD_SETSIZE) { + lua_pushnil(L); + lua_pushstring(L, strerror(EBADF)); + lua_pushinteger(L, EBADF); + return 3; + } + if(FD_ISSET(fd, &state->all)) { lua_pushnil(L); lua_pushstring(L, strerror(EEXIST));
