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198 | // Copyright (C) 2010-2024 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 <util/buffer.h>
#include <dns/messagerenderer.h>
#include <dns/rdata.h>
#include <dns/rdataclass.h>
#include <dns/rrclass.h>
#include <dns/rrtype.h>
#include <gtest/gtest.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <dns/tests/unittest_util.h>
#include <dns/tests/rdata_unittest.h>
#include <util/unittests/wiredata.h>
using namespace std;
using namespace isc::dns;
using namespace isc::util;
using namespace isc::dns::rdata;
using isc::UnitTestUtil;
using isc::util::unittests::matchWireData;
namespace {
class Rdata_OPT_Test : public RdataTest {
// there's nothing to specialize
};
const uint8_t rdata_opt_wiredata[] = {
// Option code
0x00, 0x2a,
// Option length
0x00, 0x03,
// Option data
0x00, 0x01, 0x02
};
TEST_F(Rdata_OPT_Test, createFromText) {<--- syntax error
// OPT RR cannot be created from text.
EXPECT_THROW(generic::OPT("this does not matter"), InvalidRdataText);
}
TEST_F(Rdata_OPT_Test, createFromWire) {
// Valid cases: in the simple implementation with no supported options,
// we can only check these don't throw.
EXPECT_NO_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass("CLASS4096"),
"rdata_opt_fromWire1"));
EXPECT_NO_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::CH(),
"rdata_opt_fromWire1", 2));
// Short RDLEN. This throws InvalidRdataLength even if subsequent
// pseudo RRs cause RDLEN size to be exhausted.
EXPECT_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::IN(),
"rdata_opt_fromWire2"),
InvalidRdataLength);
EXPECT_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::IN(),
"rdata_opt_fromWire3"),
InvalidRdataLength);
// Option lengths can add up and overflow RDLEN. Unlikely when
// parsed from wire data, but we'll check for it anyway.
EXPECT_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::IN(),
"rdata_opt_fromWire4"),
InvalidRdataText);
// short buffer case.
EXPECT_THROW(rdataFactoryFromFile(RRType::OPT(), RRClass::IN(),
"rdata_opt_fromWire1", 11),
isc::OutOfRange);
}
TEST_F(Rdata_OPT_Test, createFromLexer) {
// OPT RR cannot be created from text. Exceptions cause null to be
// returned.
EXPECT_FALSE(test::createRdataUsingLexer(RRType::OPT(), RRClass::IN(),
"this does not matter"));
}
TEST_F(Rdata_OPT_Test, toWireBuffer) {
const generic::OPT rdata_opt =
dynamic_cast<const generic::OPT&>
(*rdataFactoryFromFile(RRType("OPT"), RRClass("IN"),
"rdata_opt_fromWire1", 2));
obuffer.clear();
rdata_opt.toWire(obuffer);
matchWireData(rdata_opt_wiredata, sizeof(rdata_opt_wiredata),
obuffer.getData(), obuffer.getLength());
}
TEST_F(Rdata_OPT_Test, toWireRenderer) {
const generic::OPT rdata_opt =
dynamic_cast<const generic::OPT&>
(*rdataFactoryFromFile(RRType("OPT"), RRClass("IN"),
"rdata_opt_fromWire1", 2));
renderer.clear();
rdata_opt.toWire(renderer);
matchWireData(rdata_opt_wiredata, sizeof(rdata_opt_wiredata),
renderer.getData(), renderer.getLength());
}
TEST_F(Rdata_OPT_Test, toText) {
// empty OPT
const generic::OPT rdata_opt;
EXPECT_THROW(rdata_opt.toText(),
isc::InvalidOperation);
}
TEST_F(Rdata_OPT_Test, compare) {
// empty OPT
const generic::OPT rdata_opt;
EXPECT_THROW(rdata_opt.compare(
*rdataFactoryFromFile(RRType::OPT(), RRClass::CH(),
"rdata_opt_fromWire1", 2)),
isc::InvalidOperation);
// comparison attempt between incompatible RR types also results in
// isc::InvalidOperation.
EXPECT_THROW(rdata_opt.compare(*RdataTest::rdata_nomatch),
isc::InvalidOperation);
}
TEST_F(Rdata_OPT_Test, appendPseudoRR) {
generic::OPT rdata_opt;
// Append empty option data
rdata_opt.appendPseudoRR(0x0042, 0, 0);
// Append simple option data
const uint8_t option_data[] = {'H', 'e', 'l', 'l', 'o'};
rdata_opt.appendPseudoRR(0x0043, option_data, sizeof(option_data));
// Duplicate option codes are okay.
rdata_opt.appendPseudoRR(0x0042, option_data, sizeof(option_data));
// When option length may overflow RDLEN, append should throw.
const std::vector<uint8_t> buffer((1 << 16) - 1);
EXPECT_THROW(rdata_opt.appendPseudoRR(0x0044, &buffer[0], buffer.size()),
isc::InvalidParameter);
const uint8_t rdata_opt_wiredata2[] = {
// OPTION #1
// ` Option code
0x00, 0x42,
// ` Option length
0x00, 0x00,
// OPTION #2
// ` Option code
0x00, 0x43,
// ` Option length
0x00, 0x05,
// ` Option data
'H', 'e', 'l', 'l', 'o',
// OPTION #3
// ` Option code
0x00, 0x42,
// ` Option length
0x00, 0x05,
// ` Option data
'H', 'e', 'l', 'l', 'o'
};
obuffer.clear();
rdata_opt.toWire(obuffer);
matchWireData(rdata_opt_wiredata2, sizeof(rdata_opt_wiredata2),
obuffer.getData(), obuffer.getLength());
}
TEST_F(Rdata_OPT_Test, getPseudoRRs) {
const generic::OPT rdf =
dynamic_cast<const generic::OPT&>
(*rdataFactoryFromFile(RRType("OPT"), RRClass("IN"),
"rdata_opt_fromWire1", 2));
const std::vector<generic::OPT::PseudoRR>& rrs = rdf.getPseudoRRs();
ASSERT_FALSE(rrs.empty());
EXPECT_EQ(1, rrs.size());
EXPECT_EQ(0x2a, rrs.at(0).getCode());
EXPECT_EQ(3, rrs.at(0).getLength());
const uint8_t expected_data[] = {0x00, 0x01, 0x02};
const uint8_t* actual_data = rrs.at(0).getData();
EXPECT_EQ(0, std::memcmp(expected_data, actual_data,
sizeof(expected_data)));
}
}
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