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// Copyright (C) 2010 Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
#include <algorithm>
#include <utility>
#include <vector>
#include <sstream>
#include <util/io/buffer.h>
#include <dns/message.h>
#include <dns/name.h>
#include <dns/opcode.h>
#include <dns/rcode.h>
#include <dns/rrclass.h>
#include <dns/rrtype.h>
#include <bench/benchmark_util.h>
#include <gtest/gtest.h>
using namespace std;
using namespace isc::bench;
using namespace isc::dns;
using namespace isc::util::io;
namespace {
typedef pair<string, string> QueryParam;
class LoadQueryTest : public ::testing::Test {
protected:
LoadQueryTest() : query_rrclass(RRClass::IN()) {
queries.push_back(QueryParam("www.example.org", "AAAA"));
queries.push_back(QueryParam("www.example.com", "A"));
queries.push_back(QueryParam("test.example", "NS"));
}
RRClass query_rrclass;
BenchQueries result_queries;
vector<QueryParam> queries;
stringstream query_stream;
static const char* const DATA_DIR;
};
const char* const LoadQueryTest::DATA_DIR = TEST_DATA_DIR;
class QueryInserter {
public:
QueryInserter(stringstream& stream) : stream_(stream) {}
void operator()(const QueryParam& query) const {
stream_ << query.first << " " << query.second << endl;
}
private:
stringstream& stream_;
};
class QueryChecker {
public:
QueryChecker(const vector<QueryParam>* expected, const RRClass& rrclass) :
expected_(expected), rrclass_(rrclass)
{
if (expected != NULL) {
iter_ = expected_->begin();
}
}
void operator()(const vector<unsigned char>& actual_data) {
InputBuffer buffer(&actual_data[0], actual_data.size());
Message message(Message::PARSE);
message.fromWire(buffer);
// Check if the header part indicates an expected standard query.
EXPECT_EQ(0, message.getQid());
EXPECT_EQ(Opcode::QUERY(), message.getOpcode());
EXPECT_EQ(Rcode::NOERROR(), message.getRcode());
EXPECT_FALSE(message.getHeaderFlag(Message::HEADERFLAG_QR));
EXPECT_FALSE(message.getHeaderFlag(Message::HEADERFLAG_AA));
EXPECT_EQ(1, message.getRRCount(Message::SECTION_QUESTION));
EXPECT_EQ(0, message.getRRCount(Message::SECTION_ANSWER));
EXPECT_EQ(0, message.getRRCount(Message::SECTION_AUTHORITY));
EXPECT_EQ(0, message.getRRCount(Message::SECTION_ADDITIONAL));
// Check if the question matches our original data, if the expected
// data is given.
if (expected_ != NULL) {
ConstQuestionPtr question = *message.beginQuestion();;
EXPECT_EQ(Name((*iter_).first), question->getName());
EXPECT_EQ(RRType((*iter_).second), question->getType());
EXPECT_EQ(rrclass_, question->getClass());
++iter_;
}
}
private:
const vector<QueryParam>* expected_;
vector<QueryParam>::const_iterator iter_;
const RRClass rrclass_;
};
TEST_F(LoadQueryTest, load) {
for_each(queries.begin(), queries.end(), QueryInserter(query_stream));
loadQueryData(query_stream, result_queries, query_rrclass);
EXPECT_EQ(queries.size(), result_queries.size());
for_each(result_queries.begin(), result_queries.end(),
QueryChecker(&queries, query_rrclass));
}
TEST_F(LoadQueryTest, loadForCHClass) {
for_each(queries.begin(), queries.end(), QueryInserter(query_stream));
query_rrclass = RRClass::CH();
loadQueryData(query_stream, result_queries, query_rrclass);
EXPECT_EQ(queries.size(), result_queries.size());
for_each(result_queries.begin(), result_queries.end(),
QueryChecker(&queries, query_rrclass));
}
TEST_F(LoadQueryTest, loadWithComment) {
for_each(queries.begin(), queries.end(), QueryInserter(query_stream));
// add a comment line. this shouldn't change the result.
query_stream << "# this is a comment" << endl;
query_stream << endl; // empty line. should be ignored, too.
loadQueryData(query_stream, result_queries, query_rrclass);
EXPECT_EQ(queries.size(), result_queries.size());
for_each(result_queries.begin(), result_queries.end(),
QueryChecker(&queries, query_rrclass));
}
TEST_F(LoadQueryTest, loadWithIncompleteData) {
for_each(queries.begin(), queries.end(), QueryInserter(query_stream));
// RRType is missing. It should be ignored by default.
query_stream << "type-is-missing" << endl;
loadQueryData(query_stream, result_queries, query_rrclass);
EXPECT_EQ(queries.size(), result_queries.size());
for_each(result_queries.begin(), result_queries.end(),
QueryChecker(&queries, query_rrclass));
}
TEST_F(LoadQueryTest, loadWithIncompleteDataToBeRejected) {
for_each(queries.begin(), queries.end(), QueryInserter(query_stream));
// RRType is missing. We're going to specify the "strict" check, so
// we should receive an exception.
query_stream << "type-is-missing" << endl;
EXPECT_THROW(loadQueryData(query_stream, result_queries, query_rrclass,
true), BenchMarkError);
}
TEST_F(LoadQueryTest, loadWithBadData) {
for_each(queries.begin(), queries.end(), QueryInserter(query_stream));
// invalid RRType. It should be ignored by default.
query_stream << "www.example.com NOSUCHRRTYPE" << endl;
loadQueryData(query_stream, result_queries, query_rrclass);
EXPECT_EQ(queries.size(), result_queries.size());
for_each(result_queries.begin(), result_queries.end(),
QueryChecker(&queries, query_rrclass));
}
TEST_F(LoadQueryTest, loadWithBadDataToBeRejected) {
for_each(queries.begin(), queries.end(), QueryInserter(query_stream));
// invalid RRType, which should trigger an exception.
query_stream << "www.example.com NOSUCHRRTYPE" << endl;
EXPECT_THROW(loadQueryData(query_stream, result_queries, query_rrclass,
true), BenchMarkError);
}
TEST_F(LoadQueryTest, loadFromFile) {
const string data_file = string(DATA_DIR) + string("/query.txt");
loadQueryData(data_file.c_str(), result_queries, query_rrclass);
EXPECT_LT(0, result_queries.size());
// We are going to skip matching the query data; we only check the header.
// We could check the data, too, but to do so we need to populate the
// expected data from the file (or prepare a consistent copy locally).
// Since the implementation is shared with the stringstream case, the
// additional setup wouldn't be worthwhile.
for_each(result_queries.begin(), result_queries.end(),
QueryChecker(NULL, query_rrclass));
}
TEST_F(LoadQueryTest, loadFromFileNotExist) {
EXPECT_THROW(loadQueryData("notexistent/query.data", result_queries,
query_rrclass), BenchMarkError);
}
}
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