diff options
Diffstat (limited to 'win32/select.c')
| -rw-r--r-- | win32/select.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/win32/select.c b/win32/select.c index c59e4ba45d..bdc53e8181 100644 --- a/win32/select.c +++ b/win32/select.c @@ -46,6 +46,11 @@ PHPAPI int php_select(php_socket_t max_fd, fd_set *rfds, fd_set *wfds, fd_set *e struct timeval tvslice; int retcode; + /* As max_fd is unsigned, non socket might overflow. */ + if (max_fd > (php_socket_t)INT_MAX) { + return -1; + } + #define SAFE_FD_ISSET(fd, set) (set != NULL && FD_ISSET(fd, set)) /* calculate how long we need to wait in milliseconds */ @@ -61,7 +66,7 @@ PHPAPI int php_select(php_socket_t max_fd, fd_set *rfds, fd_set *wfds, fd_set *e FD_ZERO(&sock_except); /* build an array of handles for non-sockets */ - for (i = 0; i < INT_MAX && i < max_fd; i++) { + for (i = 0; i < max_fd; i++) { if (SAFE_FD_ISSET(i, rfds) || SAFE_FD_ISSET(i, wfds) || SAFE_FD_ISSET(i, efds)) { handles[n_handles] = (HANDLE)(zend_uintptr_t)_get_osfhandle(i); if (handles[n_handles] == INVALID_HANDLE_VALUE) { @@ -87,7 +92,7 @@ PHPAPI int php_select(php_socket_t max_fd, fd_set *rfds, fd_set *wfds, fd_set *e if (n_handles == 0) { /* plain sockets only - let winsock handle the whole thing */ - return select(0, rfds, wfds, efds, tv); + return select(-1, rfds, wfds, efds, tv); } /* mixture of handles and sockets; lets multiplex between @@ -111,7 +116,7 @@ PHPAPI int php_select(php_socket_t max_fd, fd_set *rfds, fd_set *wfds, fd_set *e tvslice.tv_sec = 0; tvslice.tv_usec = 100000; - retcode = select(0, &aread, &awrite, &aexcept, &tvslice); + retcode = select(-1, &aread, &awrite, &aexcept, &tvslice); } if (n_handles > 0) { /* check handles */ |