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One null-pointer dereference bugfix hidden in whitespace changes

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This commit is contained in:
Ondrej Zajicek 2009-01-16 10:58:52 +01:00
parent 0dd7ccc766
commit 3b108f18e8
1 changed files with 12 additions and 8 deletions
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10
proto/ospf/packet.c
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@ -126,7 +126,7 @@ ospf_pkt_checkauth(struct ospf_neighbor *n, struct ospf_iface *ifa, struct ospf_
break; break;
case OSPF_AUTH_SIMPLE: case OSPF_AUTH_SIMPLE:
pass = password_find(ifa->passwords, 1); pass = password_find(ifa->passwords, 1);
if(!pass) if (!pass)
{ {
OSPF_TRACE(D_PACKETS, "OSPF_auth: no password found"); OSPF_TRACE(D_PACKETS, "OSPF_auth: no password found");
return 0; return 0;
@ -149,6 +149,7 @@ ospf_pkt_checkauth(struct ospf_neighbor *n, struct ospf_iface *ifa, struct ospf_
OSPF_TRACE(D_PACKETS, "OSPF_auth: wrong size of md5 digest"); OSPF_TRACE(D_PACKETS, "OSPF_auth: wrong size of md5 digest");
return 0; return 0;
} }
if (ntohs(pkt->length) + OSPF_AUTH_CRYPT_SIZE != size) if (ntohs(pkt->length) + OSPF_AUTH_CRYPT_SIZE != size)
{ {
OSPF_TRACE(D_PACKETS, "OSPF_auth: size mismatch (%d vs %d)", OSPF_TRACE(D_PACKETS, "OSPF_auth: size mismatch (%d vs %d)",
@ -164,6 +165,8 @@ ospf_pkt_checkauth(struct ospf_neighbor *n, struct ospf_iface *ifa, struct ospf_
tail = ((void *)pkt) + ntohs(pkt->length); tail = ((void *)pkt) + ntohs(pkt->length);
if (ifa->passwords)
{
WALK_LIST(ptmp, *(ifa->passwords)) WALK_LIST(ptmp, *(ifa->passwords))
{ {
if (pkt->u.md5.keyid != ptmp->id) continue; if (pkt->u.md5.keyid != ptmp->id) continue;
@ -171,14 +174,15 @@ ospf_pkt_checkauth(struct ospf_neighbor *n, struct ospf_iface *ifa, struct ospf_
pass = ptmp; pass = ptmp;
break; break;
} }
}
if(!pass) if (!pass)
{ {
OSPF_TRACE(D_PACKETS, "OSPF_auth: no suitable md5 password found"); OSPF_TRACE(D_PACKETS, "OSPF_auth: no suitable md5 password found");
return 0; return 0;
} }
if(n) if (n)
{ {
if(ntohs(pkt->u.md5.csn) < n->csn) if(ntohs(pkt->u.md5.csn) < n->csn)
{ {