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(make_request): When determining whether there are IPv4/IPv6 addresses, ignore loopback addresses.

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This commit is contained in:
Ulrich Drepper 2007-06-16 16:54:40 +00:00
parent ae8e81f596
commit df18fdb930
1 changed files with 56 additions and 24 deletions
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80
sysdeps/unix/sysv/linux/check_pf.c
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@ -139,40 +139,72 @@ make_request (int fd, pid_t pid, bool *seen_ipv4, bool *seen_ipv6,
if (nlmh->nlmsg_type == RTM_NEWADDR)
{
struct ifaddrmsg *ifam = (struct ifaddrmsg *) NLMSG_DATA (nlmh);
struct rtattr *rta = IFA_RTA (ifam);
size_t len = nlmh->nlmsg_len - NLMSG_LENGTH (sizeof (*ifam));
switch (ifam->ifa_family)
{
const void *local;
const void *address;
case AF_INET:
*seen_ipv4 = true;
local = NULL;
address = NULL;
while (RTA_OK (rta, len))
{
switch (rta->rta_type)
{
case IFA_LOCAL:
local = RTA_DATA (rta);
break;
case IFA_ADDRESS:
address = RTA_DATA (rta);
goto out_v4;
}
rta = RTA_NEXT (rta, len);
}
if (local != NULL)
{
out_v4:
if (*(const in_addr_t *) (address ?: local)
!= htonl (INADDR_LOOPBACK))
*seen_ipv4 = true;
}
break;
case AF_INET6:
*seen_ipv6 = true;
local = NULL;
address = NULL;
while (RTA_OK (rta, len))
{
switch (rta->rta_type)
{
case IFA_LOCAL:
local = RTA_DATA (rta);
break;
case IFA_ADDRESS:
address = RTA_DATA (rta);
goto out_v6;
}
rta = RTA_NEXT (rta, len);
}
if (local != NULL)
{
out_v6:
if (!IN6_IS_ADDR_LOOPBACK (address ?: local))
*seen_ipv6 = true;
}
if (ifam->ifa_flags & (IFA_F_DEPRECATED
| IFA_F_TEMPORARY
| IFA_F_HOMEADDRESS))
{
struct rtattr *rta = IFA_RTA (ifam);
size_t len = (nlmh->nlmsg_len
- NLMSG_LENGTH (sizeof (*ifam)));
void *local = NULL;
void *address = NULL;
while (RTA_OK (rta, len))
{
switch (rta->rta_type)
{
case IFA_LOCAL:
local = RTA_DATA (rta);
break;
case IFA_ADDRESS:
address = RTA_DATA (rta);
break;
}
rta = RTA_NEXT (rta, len);
}
struct in6ailist *newp = alloca (sizeof (*newp));
newp->info.flags = (((ifam->ifa_flags & IFA_F_DEPRECATED)
? in6ai_deprecated : 0)
@ -203,7 +235,7 @@ make_request (int fd, pid_t pid, bool *seen_ipv4, bool *seen_ipv6,
close_not_cancel_no_status (fd);
if (in6ailist != NULL)
if (*seen_ipv6 && in6ailist != NULL)
{
*in6ai = malloc (in6ailistlen * sizeof (**in6ai));
if (*in6ai == NULL)