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Code Issues Releases Wiki Activity

ircd::net::dns: Empty cache key assertions.

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This commit is contained in:
Jason Volk 2018-04-15 02:44:28 -07:00
parent 0c78bf7a9b
commit 2dad8d8832
1 changed files with 6 additions and 0 deletions
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6
ircd/net.cc
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@ -2492,6 +2492,7 @@ ircd::net::dns::cache::put_error(const rfc1035::question &question,
rstrip(question.name, '.')
};
assert(!empty(host));
switch(question.qtype)
{
case 1: // A
@ -2549,6 +2550,7 @@ ircd::net::dns::cache::put(const rfc1035::question &question,
rstrip(question.name, '.')
};
assert(!empty(host));
switch(answer.qtype)
{
case 1: // A
@ -2632,6 +2634,7 @@ ircd::net::dns::cache::get(const hostport &hp,
//TODO: Better deduction
if(hp.service || opts.srv) // deduced SRV query
{
assert(!empty(host(hp)));
thread_local char srvbuf[512];
const string_view srvhost
{
@ -2679,6 +2682,9 @@ ircd::net::dns::cache::get(const hostport &hp,
{
auto &map{A};
const auto &key{rstrip(host(hp), '.')};
if(unlikely(empty(key)))
return false;
const auto pit{map.equal_range(key)};
if(pit.first == pit.second)
return false;