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nss: Compare addresses iff their family matches

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When parsing leases file, appendAddr() is called to append parsed
tuple (address, expiry time, family) into an array. Whilst doing
so, the array is searched for possible duplicate. This is done by
comparing each item of the array by passed @family: if @family is
AF_INET then the item is viewed as IPv4 address. Similarly, if
@family is AF_INET6 then the item is viewed as IPv6 address. This
is not exactly right - the array can contain addresses of both
families and thus the address family of each item of the array
must be considered.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
Michal Privoznik 2019-09-28 20:46:08 +02:00
parent a95e585e13
commit b62ef64216
1 changed files with 4 additions and 2 deletions
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6
tools/nss/libvirt_nss_leases.c
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@ -116,14 +116,16 @@ appendAddr(const char *name __attribute__((unused)),
for (i = 0; i < *ntmpAddress; i++) {
if (family == AF_INET) {
if (memcmp((*tmpAddress)[i].addr,
if ((*tmpAddress)[i].af == AF_INET &&
memcmp((*tmpAddress)[i].addr,
&sa.sin.sin_addr,
sizeof(sa.sin.sin_addr)) == 0) {
DEBUG("IP address already in the list");
return 0;
}
} else {
if (memcmp((*tmpAddress)[i].addr,
if ((*tmpAddress)[i].af == AF_INET6 &&
memcmp((*tmpAddress)[i].addr,
&sa.sin6.sin6_addr,
sizeof(sa.sin6.sin6_addr)) == 0) {
DEBUG("IP address already in the list");