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babel: Added null check after retrieving babel_ifp

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Asserting the further instructions when the babel interface pointer is
NULL

Signed-off-by: y-bharath14 <y.bharath@samsung.com>
This commit is contained in:
Y Bharath 2024-06-06 18:49:07 +05:30
parent ebf05b4ee1
commit ae885a7e7f
1 changed files with 18 additions and 3 deletions
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21
babeld/babel_interface.c
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@ -108,6 +108,7 @@ babel_interface_address_add (ZAPI_CALLBACK_ARGS)
if (prefix->family == AF_INET) { if (prefix->family == AF_INET) {
flush_interface_routes(ifc->ifp, 0); flush_interface_routes(ifc->ifp, 0);
babel_ifp = babel_get_if_nfo(ifc->ifp); babel_ifp = babel_get_if_nfo(ifc->ifp);
assert (babel_ifp != NULL);
if (babel_ifp->ipv4 == NULL) { if (babel_ifp->ipv4 == NULL) {
babel_ifp->ipv4 = malloc(4); babel_ifp->ipv4 = malloc(4);
if (babel_ifp->ipv4 == NULL) { if (babel_ifp->ipv4 == NULL) {
@ -144,6 +145,7 @@ babel_interface_address_delete (ZAPI_CALLBACK_ARGS)
if (prefix->family == AF_INET) { if (prefix->family == AF_INET) {
flush_interface_routes(ifc->ifp, 0); flush_interface_routes(ifc->ifp, 0);
babel_ifp = babel_get_if_nfo(ifc->ifp); babel_ifp = babel_get_if_nfo(ifc->ifp);
assert (babel_ifp != NULL);
if (babel_ifp->ipv4 != NULL if (babel_ifp->ipv4 != NULL
&& memcmp(babel_ifp->ipv4, &prefix->u.prefix4, IPV4_MAX_BYTELEN) && memcmp(babel_ifp->ipv4, &prefix->u.prefix4, IPV4_MAX_BYTELEN)
== 0) { == 0) {
@ -542,7 +544,10 @@ DEFPY (babel_set_channel,
unsigned unsigned
jitter(babel_interface_nfo *babel_ifp, int urgent) jitter(babel_interface_nfo *babel_ifp, int urgent)
{ {
unsigned interval = babel_ifp->hello_interval; unsigned interval;
assert (babel_ifp != NULL);
interval = babel_ifp->hello_interval;
if(urgent) if(urgent)
interval = MIN(interval, 100); interval = MIN(interval, 100);
else else
@ -553,7 +558,10 @@ jitter(babel_interface_nfo *babel_ifp, int urgent)
unsigned unsigned
update_jitter(babel_interface_nfo *babel_ifp, int urgent) update_jitter(babel_interface_nfo *babel_ifp, int urgent)
{ {
unsigned interval = babel_ifp->hello_interval; unsigned interval;
assert (babel_ifp != NULL);
interval = babel_ifp->hello_interval;
if(urgent) if(urgent)
interval = MIN(interval, 100); interval = MIN(interval, 100);
else else
@ -566,10 +574,11 @@ update_jitter(babel_interface_nfo *babel_ifp, int urgent)
static int static int
interface_recalculate(struct interface *ifp) interface_recalculate(struct interface *ifp)
{ {
babel_interface_nfo *babel_ifp = babel_get_if_nfo(ifp);
unsigned char *tmp = NULL; unsigned char *tmp = NULL;
int mtu, rc; int mtu, rc;
struct ipv6_mreq mreq; struct ipv6_mreq mreq;
babel_interface_nfo *babel_ifp = babel_get_if_nfo(ifp);
assert (babel_ifp != NULL);
if (!IS_ENABLE(ifp)) if (!IS_ENABLE(ifp))
return -1; return -1;
@ -656,6 +665,7 @@ interface_reset(struct interface *ifp)
int rc; int rc;
struct ipv6_mreq mreq; struct ipv6_mreq mreq;
babel_interface_nfo *babel_ifp = babel_get_if_nfo(ifp); babel_interface_nfo *babel_ifp = babel_get_if_nfo(ifp);
assert (babel_ifp != NULL);
if (!CHECK_FLAG(babel_ifp->flags, BABEL_IF_IS_UP)) if (!CHECK_FLAG(babel_ifp->flags, BABEL_IF_IS_UP))
return 0; return 0;
@ -777,6 +787,7 @@ show_babel_interface_sub (struct vty *vty, struct interface *ifp)
return; return;
} }
babel_ifp = babel_get_if_nfo (ifp); babel_ifp = babel_get_if_nfo (ifp);
assert (babel_ifp != NULL);
vty_out (vty, " Babel protocol is running on this interface\n"); vty_out (vty, " Babel protocol is running on this interface\n");
vty_out (vty, " Operating mode is \"%s\"\n", vty_out (vty, " Operating mode is \"%s\"\n",
CHECK_FLAG(babel_ifp->flags, BABEL_IF_WIRED) ? "wired" : "wireless"); CHECK_FLAG(babel_ifp->flags, BABEL_IF_WIRED) ? "wired" : "wireless");
@ -1228,6 +1239,7 @@ interface_config_write (struct vty *vty)
if (ifp->desc) if (ifp->desc)
vty_out (vty, " description %s\n",ifp->desc); vty_out (vty, " description %s\n",ifp->desc);
babel_interface_nfo *babel_ifp = babel_get_if_nfo (ifp); babel_interface_nfo *babel_ifp = babel_get_if_nfo (ifp);
assert (babel_ifp != NULL);
/* wireless is the default*/ /* wireless is the default*/
if (CHECK_FLAG (babel_ifp->flags, BABEL_IF_WIRED)) if (CHECK_FLAG (babel_ifp->flags, BABEL_IF_WIRED))
{ {
@ -1330,6 +1342,7 @@ babel_interface_allocate (void)
{ {
babel_interface_nfo *babel_ifp; babel_interface_nfo *babel_ifp;
babel_ifp = XCALLOC(MTYPE_BABEL_IF, sizeof(babel_interface_nfo)); babel_ifp = XCALLOC(MTYPE_BABEL_IF, sizeof(babel_interface_nfo));
assert (babel_ifp != NULL);
/* All flags are unset */ /* All flags are unset */
babel_ifp->bucket_time = babel_now.tv_sec; babel_ifp->bucket_time = babel_now.tv_sec;
babel_ifp->bucket = BUCKET_TOKENS_MAX; babel_ifp->bucket = BUCKET_TOKENS_MAX;
@ -1349,6 +1362,8 @@ babel_interface_allocate (void)
static void static void
babel_interface_free (babel_interface_nfo *babel_ifp) babel_interface_free (babel_interface_nfo *babel_ifp)
{ {
assert (babel_ifp != NULL);
if (babel_ifp->ipv4){ if (babel_ifp->ipv4){
free(babel_ifp->ipv4); free(babel_ifp->ipv4);
babel_ifp->ipv4 = NULL; babel_ifp->ipv4 = NULL;