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core_dns Allow usage of id 0

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This commit is contained in:
Attila Molnar 2015-04-21 15:00:01 +02:00
parent 987dee3fde
commit 8950aeda9a
1 changed files with 8 additions and 6 deletions
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14
src/coremods/core_dns.cpp
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@ -473,32 +473,34 @@ class MyManager : public Manager, public Timer, public EventHandler
/* Create an id */
unsigned int tries = 0;
int id;
do
{
req->id = ServerInstance->GenRandomInt(DNS::MAX_REQUEST_ID);
id = ServerInstance->GenRandomInt(DNS::MAX_REQUEST_ID);
if (++tries == DNS::MAX_REQUEST_ID*5)
{
// If we couldn't find an empty slot this many times, do a sequential scan as a last
// resort. If an empty slot is found that way, go on, otherwise throw an exception
req->id = 0;
for (int i = 1; i < DNS::MAX_REQUEST_ID; i++)
id = -1;
for (unsigned int i = 0; i < DNS::MAX_REQUEST_ID; i++)
{
if (!this->requests[i])
{
req->id = i;
id = i;
break;
}
}
if (req->id == 0)
if (id == -1)
throw Exception("DNS: All ids are in use");
break;
}
}
while (!req->id || this->requests[req->id]);
while (this->requests[id]);
req->id = id;
this->requests[req->id] = req;
Packet p;