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/*
* This file is part of PowerDNS or dnsdist.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "dnsdist-cache.hh"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
{
if (size > std::numeric_limits<uint16_t>::max()) {
return 0;
}
/* dnsdist's version */
// By default, cookies are not hashed
DNSDistPacketCache::CacheSettings skipCookieSettings{
.d_maxEntries = 10000,
.d_parseECS = true,
};
DNSDistPacketCache pcSkipCookies(skipCookieSettings);
// Do not skip cookies
DNSDistPacketCache::CacheSettings parseCookieSettings{
.d_optionsToSkip = {},
.d_maxEntries = 10000,
.d_parseECS = true,
};
DNSDistPacketCache pcHashCookies(parseCookieSettings);
try {
uint16_t qtype;
uint16_t qclass;
unsigned int consumed;
PacketBuffer vect(data, data + size);
const DNSName qname(reinterpret_cast<const char*>(data), size, sizeof(dnsheader), false, &qtype, &qclass, &consumed);
pcSkipCookies.getKey(qname.getStorage(), consumed, vect, false);
pcHashCookies.getKey(qname.getStorage(), consumed, vect, false);
boost::optional<Netmask> subnet;
DNSDistPacketCache::getClientSubnet(vect, consumed, subnet);
}
catch (const std::exception& e) {
}
catch (const PDNSException& e) {
}
return 0;
}
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