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- Fix integer underflow in prefetch ttl creation from cache. This

Browse source 
fixes a potential negative prefetch ttl.
-This line, and those below, will be ignored--

M    trunk/services/cache/dns.c
M    trunk/doc/Changelog


git-svn-id: file:///svn/unbound/trunk@2198 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2010-07-14 11:13:30 +00:00
parent f10b2c0b33
commit 45f74a1497
2 changed files with 4 additions and 2 deletions
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2
doc/Changelog
View file

@ -1,5 +1,7 @@
14 July 2010: Wouter
- Donation text added to README.
- Fix integer underflow in prefetch ttl creation from cache. This
fixes a potential negative prefetch ttl.
12 July 2010: Wouter
- Changed the defaults for num-queries-per-thread/outgoing-range.

4
services/cache/dns.c vendored
View file

@ -430,9 +430,9 @@ tomsg(struct module_env* env, struct msgreply_entry* e, struct reply_info* r,
msg->rep->flags = r->flags;
msg->rep->qdcount = r->qdcount;
msg->rep->ttl = r->ttl - now;
if(r->prefetch_ttl - now > 0)
if(r->prefetch_ttl > now)
msg->rep->prefetch_ttl = r->prefetch_ttl - now;
else msg->rep->prefetch_ttl = PREFETCH_TTL_CALC(r->prefetch_ttl);
else msg->rep->prefetch_ttl = PREFETCH_TTL_CALC(msg->rep->ttl);
msg->rep->security = r->security;
msg->rep->an_numrrsets = r->an_numrrsets;
msg->rep->ns_numrrsets = r->ns_numrrsets;