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socket: added some checks for the local and remote addresses

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This commit is contained in:
Steffen Vogel 2017-05-28 18:38:20 +02:00
parent 8cab5cde96
commit 2651181900
1 changed files with 16 additions and 0 deletions
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16
lib/nodes/socket.c
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@ -155,6 +155,22 @@ int socket_start(struct node *n)
struct sockaddr_in *sin = (struct sockaddr_in *) &s->local;
struct sockaddr_ll *sll = (struct sockaddr_ll *) &s->local;
int ret;
/* Some checks on the addresses */
if (s->local.sa.sa_family != s->remote.sa.sa_family)
error("Address families of local and remote must match!");
if (s->layer == SOCKET_LAYER_IP) {
if (ntohs(s->local.sin.sin_port) != ntohs(s->remote.sin.sin_port))
error("IP protocol numbers of local and remote must match!");
}
else if(s->layer == SOCKET_LAYER_ETH) {
if (ntohs(s->local.sll.sll_protocol) != ntohs(s->remote.sll.sll_protocol))
error("Ethertypes of local and remote must match!");
if (ntohs(s->local.sll.sll_protocol) <= 0x5DC)
error("Ethertype must be large than %d or it is interpreted as an IEEE802.3 length field!", 0x5DC);
}
/* Create socket */
switch (s->layer) {