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ssl_verify: Do not check IP if we fail to resolve it

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There's no point on checking an empty IP address, an IP
address is never empty.
This also solve some compiler warnings trying to possibly
pass a NULL pointer to memcmp or setting a variable without
reading it.

Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
Acked-by: Uri Lublin <uril@redhat.com>
This commit is contained in:
Frediano Ziglio 2020-08-27 17:57:36 +01:00
parent 7daee890be
commit c39cc1b1ef
1 changed files with 10 additions and 11 deletions
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21
common/ssl_verify.c
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@ -196,21 +196,22 @@ static int verify_hostname(X509* cert, const char *hostname)
return 1;
}
} else if (name->type == GEN_IPADD) {
GInetAddress * ip = NULL;
const guint8 * ip_binary = NULL;
int alt_ip_len = 0;
int ip_len = 0;
GInetAddress * ip;
const guint8 * ip_binary;
int alt_ip_len;
int ip_len;
found_dns_name = 1;
ip = g_inet_address_new_from_string(hostname);
if (ip != NULL) {
ip_len = g_inet_address_get_native_size(ip);
ip_binary = g_inet_address_to_bytes(ip);
} else {
if (ip == NULL) {
spice_warning("Could not parse hostname: %s", hostname);
continue;
}
ip_len = g_inet_address_get_native_size(ip);
ip_binary = g_inet_address_to_bytes(ip);
alt_ip_len = ASN1_STRING_length(name->d.iPAddress);
if ((ip_len == alt_ip_len) &&
@ -229,9 +230,7 @@ static int verify_hostname(X509* cert, const char *hostname)
GENERAL_NAMES_free(subject_alt_names);
return 1;
}
if (ip != NULL) {
g_object_unref(ip);
}
g_object_unref(ip);
}
}
GENERAL_NAMES_free(subject_alt_names);