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// Copyright (C) 2009-2015 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <stdexcept>
#include <vector>
#include <string>
#include <gtest/gtest.h>
#include <dns/rcode.h>
#include <dns/name.h>
#include <dns/message.h>
#include <dns/tests/unittest_util.h>
using namespace std;
using namespace isc::dns;
using isc::UnitTestUtil;
namespace {
class UnitTestUtilConfig {
private:
// This is a singleton object and cannot be constructed explicitly.
UnitTestUtilConfig() {}
UnitTestUtilConfig(const UnitTestUtilConfig& source);
~UnitTestUtilConfig() {}
public:
/// Return a singleton unit test configuration object. On first invocation
/// one will be constructed.
static UnitTestUtilConfig& getConfig();
/// A list of paths to wire data files.
/// \c UnitTestUtil::readWireData() (first version)
/// will search the directories in this list for the specified data file.
std::vector<string> data_paths_;
};
UnitTestUtilConfig&
UnitTestUtilConfig::getConfig() {
static UnitTestUtilConfig config;
return (config);
}
}
void
UnitTestUtil::readWireData(const char* datafile, vector<unsigned char>& data) {
ifstream ifs;
const UnitTestUtilConfig& config = UnitTestUtilConfig::getConfig();
vector<string>::const_iterator it = config.data_paths_.begin();
for (; it != config.data_paths_.end(); ++it) {
string data_path = *it;
if (data_path.empty() || *data_path.rbegin() != '/') {
data_path.push_back('/');
}
ifs.open((data_path + datafile).c_str(), ios_base::in);
if ((ifs.rdstate() & istream::failbit) == 0) {
break;
}
}
if (it == config.data_paths_.end()) {
throw runtime_error("failed to open data file in data paths: " +
string(datafile));
}
data.clear();
string s;
while (getline(ifs, s), !ifs.eof()) {
if (ifs.bad() || ifs.fail()) {
throw runtime_error("unexpected data line");
}
if (s.empty() || s[0] == '#') {
continue;
}
readWireData(s, data);
}
}
void
UnitTestUtil::addDataPath(const string& directory) {
UnitTestUtilConfig::getConfig().data_paths_.push_back(directory);
}
void
UnitTestUtil::readWireData(const string& datastr,
vector<unsigned char>& data)
{
istringstream iss(datastr);
do {
string bytes;
iss >> bytes;
if (iss.bad() || iss.fail() || (bytes.size() % 2) != 0) {
ostringstream err_oss;
err_oss << "unexpected input or I/O error in reading " <<
datastr;
throw runtime_error(err_oss.str());
}
for (string::size_type pos = 0; pos < bytes.size(); pos += 2) {
istringstream iss_byte(bytes.substr(pos, 2));
unsigned int ch;
iss_byte >> hex >> ch;
if (iss_byte.rdstate() != istream::eofbit) {
ostringstream err_oss;
err_oss << "invalid byte representation: " << iss_byte.str();
throw runtime_error(err_oss.str());
}
data.push_back(static_cast<unsigned char>(ch));
}
} while (!iss.eof());
}
::testing::AssertionResult
UnitTestUtil::matchName(const char*, const char*,
const isc::dns::Name& name1,
const isc::dns::Name& name2)
{
::testing::Message msg;
NameComparisonResult cmpresult = name1.compare(name2);
if (cmpresult.getOrder() != 0 ||
cmpresult.getRelation() != NameComparisonResult::EQUAL) {
msg << "Two names are expected to be equal but not:\n"
<< " One: " << name1 << "\n"
<< "Other: " << name2 << "\n";
return (::testing::AssertionFailure(msg));
}
return (::testing::AssertionSuccess());
}
void
UnitTestUtil::createRequestMessage(Message& message,
const Opcode& opcode,
const uint16_t qid,
const Name& name,
const RRClass& rrclass,
const RRType& rrtype)
{
message.clear(Message::RENDER);
message.setOpcode(opcode);
message.setRcode(Rcode::NOERROR());
message.setQid(qid);
message.addQuestion(Question(name, rrclass, rrtype));
}
void
UnitTestUtil::createDNSSECRequestMessage(Message& message,
const Opcode& opcode,
const uint16_t qid,
const Name& name,
const RRClass& rrclass,
const RRType& rrtype)
{
message.clear(Message::RENDER);
message.setOpcode(opcode);
message.setRcode(Rcode::NOERROR());
message.setQid(qid);
message.addQuestion(Question(name, rrclass, rrtype));
EDNSPtr edns(new EDNS());
edns->setUDPSize(4096);
edns->setDNSSECAwareness(true);
message.setEDNS(edns);
}
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