diff options
Diffstat (limited to 'filter')
| -rw-r--r-- | filter/ulogd_filter_HWHDR.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/filter/ulogd_filter_HWHDR.c b/filter/ulogd_filter_HWHDR.c index af44791..8df4f00 100644 --- a/filter/ulogd_filter_HWHDR.c +++ b/filter/ulogd_filter_HWHDR.c @@ -111,13 +111,19 @@ static struct ulogd_key mac2str_keys[] = { static int parse_mac2str(struct ulogd_key *ret, unsigned char *mac, int okey, int len) { - char *mac_str = calloc(len/sizeof(char)*3, sizeof(char)); - char *buf_cur = mac_str; + char *mac_str; + char *buf_cur; int i; + if (len > 0) + mac_str = calloc(len/sizeof(char)*3, sizeof(char)); + else + mac_str = strdup(""); + if (mac_str == NULL) return ULOGD_IRET_ERR; + buf_cur = mac_str; for (i = 0; i < len; i++) buf_cur += sprintf(buf_cur, "%02x%c", mac[i], i == len - 1 ? 0 : ':'); |