ws2_32: Avoid overflows in get_rcvsnd_timeo.
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d15ca4edb9
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@ -1251,30 +1251,28 @@ static char *strdup_lower(const char *str)
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/* Utility: get the SO_RCVTIMEO or SO_SNDTIMEO socket option
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* from an fd and return the value converted to milli seconds
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* or -1 if there is an infinite time out */
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static inline int get_rcvsnd_timeo( int fd, int optname)
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* or 0 if there is an infinite time out */
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static inline INT64 get_rcvsnd_timeo( int fd, int optname)
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{
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struct timeval tv;
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socklen_t len = sizeof(tv);
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int ret = getsockopt(fd, SOL_SOCKET, optname, &tv, &len);
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if( ret >= 0)
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ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
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if( ret <= 0 ) /* tv == {0,0} means infinite time out */
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return -1;
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return ret;
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int res = getsockopt(fd, SOL_SOCKET, optname, &tv, &len);
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if (res < 0)
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return 0;
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return (UINT64)tv.tv_sec * 1000 + tv.tv_usec / 1000;
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}
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/* macro wrappers for portability */
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#ifdef SO_RCVTIMEO
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#define GET_RCVTIMEO(fd) get_rcvsnd_timeo( (fd), SO_RCVTIMEO)
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#else
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#define GET_RCVTIMEO(fd) (-1)
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#define GET_RCVTIMEO(fd) (0)
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#endif
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#ifdef SO_SNDTIMEO
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#define GET_SNDTIMEO(fd) get_rcvsnd_timeo( (fd), SO_SNDTIMEO)
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#else
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#define GET_SNDTIMEO(fd) (-1)
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#define GET_SNDTIMEO(fd) (0)
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#endif
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/* utility: given an fd, will block until one of the events occurs */
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@ -5076,18 +5074,20 @@ static int WS2_sendto( SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
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while (wsa->first_iovec < wsa->n_iovecs)
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{
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struct pollfd pfd;
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int timeout = GET_SNDTIMEO(fd);
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int poll_timeout = -1;
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INT64 timeout = GET_SNDTIMEO(fd);
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if (timeout != -1)
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if (timeout)
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{
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timeout -= GetTickCount() - timeout_start;
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if (timeout < 0) timeout = 0;
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if (timeout < 0) poll_timeout = 0;
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else poll_timeout = timeout <= INT_MAX ? timeout : INT_MAX;
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}
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pfd.fd = fd;
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pfd.events = POLLOUT;
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if (!timeout || !poll( &pfd, 1, timeout ))
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if (!poll_timeout || !poll( &pfd, 1, poll_timeout ))
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{
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err = WSAETIMEDOUT;
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goto error; /* msdn says a timeout in send is fatal */
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@ -7130,18 +7130,21 @@ static int WS2_recv_base( SOCKET s, LPWSABUF lpBuffers, DWORD dwBufferCount,
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if ( is_blocking )
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{
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struct pollfd pfd;
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int timeout = GET_RCVTIMEO(fd);
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if (timeout != -1)
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int poll_timeout = -1;
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INT64 timeout = GET_RCVTIMEO(fd);
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if (timeout)
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{
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timeout -= GetTickCount() - timeout_start;
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if (timeout < 0) timeout = 0;
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if (timeout < 0) poll_timeout = 0;
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else poll_timeout = timeout <= INT_MAX ? timeout : INT_MAX;
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}
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pfd.fd = fd;
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pfd.events = POLLIN;
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if (*lpFlags & WS_MSG_OOB) pfd.events |= POLLPRI;
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if (!timeout || !poll( &pfd, 1, timeout ))
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if (!poll_timeout || !poll( &pfd, 1, poll_timeout ))
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{
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err = WSAETIMEDOUT;
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/* a timeout is not fatal */
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