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Try to fix the socket API for sizeof(int) <= 2 by checking INT_MAX at 2 places

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This commit is contained in:
goldsimon 2017-04-20 22:06:36 +02:00
parent b93572dca8
commit dbc969c139
1 changed files with 5 additions and 1 deletions
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6
src/api/sockets.c
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@ -920,6 +920,10 @@ lwip_recv_tcp(struct lwip_sock *sock, void *mem, size_t len, int flags)
} else {
copylen = (u16_t)recv_left;
}
if (recvd + copylen < recvd) {
/* int overflow */
copylen = INT_MAX - recvd;
}
/* copy the contents of the received buffer into
the supplied memory pointer mem */
@ -1487,7 +1491,7 @@ lwip_sendto(int s, const void *data, size_t size, int flags,
#endif /* LWIP_TCP */
}
if (size > 0xFFFF) {
if (size > LWIP_MIN(0xFFFF, INT_MAX)) {
/* cannot fit into one datagram (at least for us) */
sock_set_errno(sock, EMSGSIZE);
done_socket(sock);