diff options
| -rw-r--r-- | src/ndp.c | 15 |
1 files changed, 12 insertions, 3 deletions
@@ -167,6 +167,7 @@ int setup_ndp_interface(struct interface *iface, bool enable) memcpy(entry, iface->static_ndp, iface->static_ndp_len); for (entry = strtok_r(entry, " ", &saveptr); entry; entry = strtok_r(NULL, " ", &saveptr)) { + char *sep; struct ndp_neighbor *n = malloc(sizeof(*n)); if (!n) { syslog(LOG_ERR, "Malloc failed for static NDP-prefix %s", entry); @@ -176,12 +177,20 @@ int setup_ndp_interface(struct interface *iface, bool enable) n->iface = iface; n->timeout = 0; - char ipbuf[INET6_ADDRSTRLEN]; - if (sscanf(entry, "%45s/%hhu", ipbuf, &n->len) < 2 - || n->len > 128 || inet_pton(AF_INET6, ipbuf, &n->addr) != 1) { + sep = strchr(entry, '/'); + if (!sep) { + free(n); syslog(LOG_ERR, "Invalid static NDP-prefix %s", entry); return -1; } + + *sep = 0; + n->len = atoi(sep + 1); + if (inet_pton(AF_INET6, entry, &n->addr) != 1 || n->len > 128) { + free(n); + syslog(LOG_ERR, "Invalid static NDP-prefix %s/%s", entry, sep + 1); + return -1; + } list_add(&n->head, &neighbors); } |