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| author | Ondrej Filip <feela@network.cz> | 2000-06-05 20:09:15 +0200 |
|---|---|---|
| committer | Ondrej Filip <feela@network.cz> | 2000-06-05 20:09:15 +0200 |
| commit | aba5e89f9310bb33c7362b02108e640983ad0819 (patch) | |
| tree | c40295b7b175743f372f074f7e17baff72bdf2bb /proto/ospf | |
| parent | 4c5f93d76bd0636407a185c175fe73411ae79a32 (diff) | |
| download | bird-aba5e89f9310bb33c7362b02108e640983ad0819.tar bird-aba5e89f9310bb33c7362b02108e640983ad0819.zip | |
Better checksum checking.
Diffstat (limited to 'proto/ospf')
| -rw-r--r-- | proto/ospf/lsupd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/proto/ospf/lsupd.c b/proto/ospf/lsupd.c index 2b94b60..8fbef11 100644 --- a/proto/ospf/lsupd.c +++ b/proto/ospf/lsupd.c @@ -276,6 +276,7 @@ ospf_lsupd_rx(struct ospf_lsupd_packet *ps, struct proto *p, struct top_hash_entry *lsadb; u16 lenn; int diff=((u8 *)lsa)-((u8 *)ps); + u16 chsum; if(((diff+sizeof(struct ospf_lsa_header))>=size) || ((ntohs(lsa->length)+diff)>size)) @@ -290,7 +291,8 @@ ospf_lsupd_rx(struct ospf_lsupd_packet *ps, struct proto *p, break; } /* pg 143 (1) */ - if(lsa->checksum!=lsasum_check(lsa,NULL,po)) + chsum=lsa->checksum; + if(chsum!=lsasum_check(lsa,NULL,po)) { log("Received bad lsa checksum from %I",n->rid); continue; |