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#define BOOST_TEST_DYN_LINK
#define BOOST_TEST_NO_MAIN
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <boost/test/unit_test.hpp>
#include "arguments.hh"
#include "dnswriter.hh"
#include "dnsrecords.hh"
#include "dns_random.hh"
#include "iputils.hh"
#include "recpacketcache.hh"
#include <utility>
BOOST_AUTO_TEST_SUITE(test_recpacketcache_cc)
BOOST_AUTO_TEST_CASE(test_recPacketCacheSimple) {
RecursorPacketCache rpc;
string fpacket;
unsigned int tag=0;
uint32_t age=0;
uint32_t qhash=0;
uint32_t ttd=3600;
BOOST_CHECK_EQUAL(rpc.size(), 0U);
::arg().set("rng")="auto";
::arg().set("entropy-source")="/dev/urandom";
DNSName qname("www.powerdns.com");
vector<uint8_t> packet;
DNSPacketWriter pw(packet, qname, QType::A);
pw.getHeader()->rd=true;
pw.getHeader()->qr=false;
pw.getHeader()->id=dns_random_uint16();
string qpacket((const char*)&packet[0], packet.size());
pw.startRecord(qname, QType::A, ttd);
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag, qpacket, time(nullptr), &fpacket, &age, &qhash), false);
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &qhash), false);
ARecordContent ar("127.0.0.1");
ar.toPacket(pw);
pw.commit();
string rpacket((const char*)&packet[0], packet.size());
rpc.insertResponsePacket(tag, qhash, string(qpacket), qname, QType::A, QClass::IN, string(rpacket), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 1U);
rpc.doPruneTo(0);
BOOST_CHECK_EQUAL(rpc.size(), 0U);
rpc.insertResponsePacket(tag, qhash, string(qpacket), qname, QType::A, QClass::IN, string(rpacket), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 1U);
rpc.doWipePacketCache(qname);
BOOST_CHECK_EQUAL(rpc.size(), 0U);
rpc.insertResponsePacket(tag, qhash, string(qpacket), qname, QType::A, QClass::IN, string(rpacket), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 1U);
uint32_t qhash2 = 0;
bool found = rpc.getResponsePacket(tag, qpacket, time(nullptr), &fpacket, &age, &qhash2);
BOOST_CHECK_EQUAL(found, true);
BOOST_CHECK_EQUAL(qhash, qhash2);
BOOST_CHECK_EQUAL(fpacket, rpacket);
found = rpc.getResponsePacket(tag, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &qhash2);
BOOST_CHECK_EQUAL(found, true);
BOOST_CHECK_EQUAL(qhash, qhash2);
BOOST_CHECK_EQUAL(fpacket, rpacket);
packet.clear();
qname+=DNSName("co.uk");
DNSPacketWriter pw2(packet, qname, QType::A);
pw2.getHeader()->rd=true;
pw2.getHeader()->qr=false;
pw2.getHeader()->id=dns_random_uint16();
qpacket.assign((const char*)&packet[0], packet.size());
found = rpc.getResponsePacket(tag, qpacket, time(nullptr), &fpacket, &age, &qhash);
BOOST_CHECK_EQUAL(found, false);
found = rpc.getResponsePacket(tag, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &qhash);
BOOST_CHECK_EQUAL(found, false);
rpc.doWipePacketCache(DNSName("com"), 0xffff, true);
BOOST_CHECK_EQUAL(rpc.size(), 0U);
}
BOOST_AUTO_TEST_CASE(test_recPacketCache_Tags) {
/* Insert a response with tag1, the exact same query with a different tag
should lead to a miss. Inserting a different response with the second tag
should not override the first one, and we should get a hit for the
query with either tags, with the response matching the tag.
*/
RecursorPacketCache rpc;
string fpacket;
const unsigned int tag1=0;
const unsigned int tag2=42;
uint32_t age=0;
uint32_t qhash=0;
uint32_t temphash=0;
uint32_t ttd=3600;
BOOST_CHECK_EQUAL(rpc.size(), 0U);
::arg().set("rng")="auto";
::arg().set("entropy-source")="/dev/urandom";
DNSName qname("www.powerdns.com");
vector<uint8_t> packet;
DNSPacketWriter pw(packet, qname, QType::A);
pw.getHeader()->rd=true;
pw.getHeader()->qr=false;
pw.getHeader()->id=dns_random_uint16();
string qpacket(reinterpret_cast<const char*>(&packet[0]), packet.size());
pw.startRecord(qname, QType::A, ttd);
/* Both interfaces (with and without the qname/qtype/qclass) should get the same hash */
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag1, qpacket, time(nullptr), &fpacket, &age, &qhash), false);
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag1, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &temphash), false);
BOOST_CHECK_EQUAL(qhash, temphash);
/* Different tag, should still get get the same hash, for both interfaces */
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag2, qpacket, time(nullptr), &fpacket, &age, &temphash), false);
BOOST_CHECK_EQUAL(qhash, temphash);
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag2, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &temphash), false);
BOOST_CHECK_EQUAL(qhash, temphash);
{
ARecordContent ar("127.0.0.1");
ar.toPacket(pw);
pw.commit();
}
string r1packet(reinterpret_cast<const char*>(&packet[0]), packet.size());
{
ARecordContent ar("127.0.0.2");
ar.toPacket(pw);
pw.commit();
}
string r2packet(reinterpret_cast<const char*>(&packet[0]), packet.size());
BOOST_CHECK(r1packet != r2packet);
/* inserting a response for tag1 */
rpc.insertResponsePacket(tag1, qhash, string(qpacket), qname, QType::A, QClass::IN, string(r1packet), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 1U);
/* inserting a different response for tag2, should not override the first one */
rpc.insertResponsePacket(tag2, qhash, string(qpacket), qname, QType::A, QClass::IN, string(r2packet), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 2U);
/* remove all responses from the cache */
rpc.doPruneTo(0);
BOOST_CHECK_EQUAL(rpc.size(), 0U);
/* reinsert both */
rpc.insertResponsePacket(tag1, qhash, string(qpacket), qname, QType::A, QClass::IN, string(r1packet), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 1U);
rpc.insertResponsePacket(tag2, qhash, string(qpacket), qname, QType::A, QClass::IN, string(r2packet), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 2U);
/* remove the responses by qname, should remove both */
rpc.doWipePacketCache(qname);
BOOST_CHECK_EQUAL(rpc.size(), 0U);
/* insert the response for tag1 */
rpc.insertResponsePacket(tag1, qhash, string(qpacket), qname, QType::A, QClass::IN, string(r1packet), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 1U);
/* we can retrieve it */
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag1, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &temphash), true);
BOOST_CHECK_EQUAL(qhash, temphash);
BOOST_CHECK_EQUAL(fpacket, r1packet);
/* with both interfaces */
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag1, qpacket, time(nullptr), &fpacket, &age, &temphash), true);
BOOST_CHECK_EQUAL(qhash, temphash);
BOOST_CHECK_EQUAL(fpacket, r1packet);
/* but not with the second tag */
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag2, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &temphash), false);
/* we should still get the same hash */
BOOST_CHECK_EQUAL(temphash, qhash);
/* adding a response for the second tag */
rpc.insertResponsePacket(tag2, qhash, string(qpacket), qname, QType::A, QClass::IN, string(r2packet), time(0), ttd, vState::Indeterminate, 0, 0, boost::none);
BOOST_CHECK_EQUAL(rpc.size(), 2U);
/* We still get the correct response for the first tag */
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag1, qpacket, time(nullptr), &fpacket, &age, &temphash), true);
BOOST_CHECK_EQUAL(qhash, temphash);
BOOST_CHECK_EQUAL(fpacket, r1packet);
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag1, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &temphash), true);
BOOST_CHECK_EQUAL(qhash, temphash);
BOOST_CHECK_EQUAL(fpacket, r1packet);
/* and the correct response for the second tag */
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag2, qpacket, time(nullptr), &fpacket, &age, &temphash), true);
BOOST_CHECK_EQUAL(qhash, temphash);
BOOST_CHECK_EQUAL(fpacket, r2packet);
BOOST_CHECK_EQUAL(rpc.getResponsePacket(tag2, qpacket, qname, QType::A, QClass::IN, time(nullptr), &fpacket, &age, &temphash), true);
BOOST_CHECK_EQUAL(qhash, temphash);
BOOST_CHECK_EQUAL(fpacket, r2packet);
}
BOOST_AUTO_TEST_SUITE_END()
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