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net: context: Bind did not check IPv4 multicast address

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If the user tried to bind to IPv4 multicast address, then the
operation failed and returned error.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit is contained in:
Jukka Rissanen 2017-09-21 23:09:38 +03:00
parent 6edb0e3d18
commit 2c6e473c93
1 changed files with 13 additions and 2 deletions
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15
subsys/net/ip/net_context.c
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@ -831,8 +831,8 @@ int net_context_bind(struct net_context *context, const struct sockaddr *addr,
#if defined(CONFIG_NET_IPV4)
if (addr->sa_family == AF_INET) {
struct sockaddr_in *addr4 = (struct sockaddr_in *)addr;
struct net_if *iface = NULL;
struct net_if_addr *ifaddr;
struct net_if *iface;
struct in_addr *ptr;
int ret;
@ -840,7 +840,18 @@ int net_context_bind(struct net_context *context, const struct sockaddr *addr,
return -EINVAL;
}
if (addr4->sin_addr.s_addr == INADDR_ANY) {
if (net_is_ipv4_addr_mcast(&addr4->sin_addr)) {
struct net_if_mcast_addr *maddr;
maddr = net_if_ipv4_maddr_lookup(&addr4->sin_addr,
&iface);
if (!maddr) {
return -ENOENT;
}
ptr = &maddr->address.in_addr;
} else if (addr4->sin_addr.s_addr == INADDR_ANY) {
iface = net_if_get_default();
ptr = (struct in_addr *)net_ipv4_unspecified_address();