diff options
| -rw-r--r-- | proto/ospf/packet.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/proto/ospf/packet.c b/proto/ospf/packet.c index d156474..3076297 100644 --- a/proto/ospf/packet.c +++ b/proto/ospf/packet.c @@ -60,12 +60,16 @@ ospf_pkt_finalize(struct ospf_iface *ifa, struct ospf_packet *pkt) struct MD5Context ctxt; char password[OSPF_AUTH_CRYPT_SIZE]; + pkt->checksum = 0; pkt->autype = htons(ifa->autype); + bzero(&pkt->u, sizeof(union ospf_auth)); + + /* Compatibility note: pkt->u may contain anything if autype is + none, but nonzero values do not work with Mikrotik OSPF */ switch(ifa->autype) { case OSPF_AUTH_SIMPLE: - bzero(&pkt->u, sizeof(union ospf_auth)); passwd = password_find(ifa->passwords, 1); if (!passwd) { @@ -74,7 +78,6 @@ ospf_pkt_finalize(struct ospf_iface *ifa, struct ospf_packet *pkt) } password_cpy(pkt->u.password, passwd->password, sizeof(union ospf_auth)); case OSPF_AUTH_NONE: - pkt->checksum = 0; pkt->checksum = ipsum_calculate(pkt, sizeof(struct ospf_packet) - sizeof(union ospf_auth), (pkt + 1), ntohs(pkt->length) - @@ -88,8 +91,6 @@ ospf_pkt_finalize(struct ospf_iface *ifa, struct ospf_packet *pkt) return; } - pkt->checksum = 0; - /* Perhaps use random value to prevent replay attacks after reboot when system does not have independent RTC? */ if (!ifa->csn) |