diff options
| author | Hans Dedecker <dedeckeh@gmail.com> | 2018-12-31 15:41:25 +0100 |
|---|---|---|
| committer | Hans Dedecker <dedeckeh@gmail.com> | 2018-12-31 15:56:35 +0100 |
| commit | 8f498044938e6ae48a49bc441a21195dd889e632 (patch) | |
| tree | bc0011b370e1898e5b74bd73efa519c17a446af2 /src | |
| parent | 2d2a3b840421cfc6328aee8cc52e5a5a51444fda (diff) | |
config: check for invalid DNS addresses
Don't accept 0.0.0.0 and :: as DNS addresses.
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/config.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/config.c b/src/config.c index 9ae8466..9ffe1ac 100644 --- a/src/config.c +++ b/src/config.c @@ -580,6 +580,9 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr struct in_addr addr4; struct in6_addr addr6; if (inet_pton(AF_INET, blobmsg_get_string(cur), &addr4) == 1) { + if (addr4.s_addr == INADDR_ANY) + goto err; + iface->dhcpv4_dns = realloc(iface->dhcpv4_dns, (++iface->dhcpv4_dns_cnt) * sizeof(*iface->dhcpv4_dns)); if (!iface->dhcpv4_dns) @@ -587,6 +590,9 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr iface->dhcpv4_dns[iface->dhcpv4_dns_cnt - 1] = addr4; } else if (inet_pton(AF_INET6, blobmsg_get_string(cur), &addr6) == 1) { + if (IN6_IS_ADDR_UNSPECIFIED(&addr6)) + goto err; + iface->dns = realloc(iface->dns, (++iface->dns_cnt) * sizeof(*iface->dns)); if (!iface->dns) |