mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-07-16 09:47:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix possible NULL pointer dereference in mdns.c introduced in my last commit

Browse Source
This commit is contained in:
Dirk Ziegelmeier 2016-08-17 21:00:59 +02:00
parent ee815e4e7a
commit c8c804140d
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/apps/mdns/mdns.c
View File

@ -1928,9 +1928,10 @@ err_t
mdns_resp_remove_netif(struct netif *netif)
{
int i;
struct mdns_host* mdns = (struct mdns_host*)netif->client_data[mdns_netif_client_id];
struct mdns_host* mdns;
LWIP_ASSERT("mdns_resp_remove_netif: Null pointer", netif);
mdns = (struct mdns_host*)netif->client_data[mdns_netif_client_id];
LWIP_ERROR("mdns_resp_remove_netif: Not an active netif", (mdns != NULL), return ERR_VAL);
for (i = 0; i < MDNS_MAX_SERVICES; i++) {
@ -1974,9 +1975,10 @@ mdns_resp_add_service(struct netif *netif, const char *name, const char *service
int i;
int slot = -1;
struct mdns_service *srv;
struct mdns_host* mdns = (struct mdns_host*)netif->client_data[mdns_netif_client_id];
struct mdns_host* mdns;
LWIP_ASSERT("mdns_resp_add_service: netif != NULL", netif);
mdns = (struct mdns_host*)netif->client_data[mdns_netif_client_id];
LWIP_ERROR("mdns_resp_add_service: Not an mdns netif", (mdns != NULL), return ERR_VAL);
LWIP_ERROR("mdns_resp_add_service: Name too long", (strlen(name) <= MDNS_LABEL_MAXLEN), return ERR_VAL);