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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 <dns/rdataclass.h>
#include <util/buffer.h>
#include <dns/exceptions.h>
#include <dns/messagerenderer.h>
#include <dns/master_lexer.h>
#include <dns/master_loader.h>
#include <dns/rdata.h>
#include <dns/rrclass.h>
#include <dns/rrtype.h>
#include <gtest/gtest.h>
#include <dns/tests/unittest_util.h>
#include <dns/tests/rdata_unittest.h>
#include <util/unittests/wiredata.h>
#include <sstream>
#include <arpa/inet.h>
#include <sys/socket.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_IN_A_Test : public RdataTest {
protected:
Rdata_IN_A_Test() : rdata_in_a("192.0.2.1") {}
void checkFromTextIN_A(const std::string& rdata_txt,
bool throw_str_version = true,
bool throw_lexer_version = true) {
checkFromText<in::A, InvalidRdataText, InvalidRdataText>(
rdata_txt, rdata_in_a, throw_str_version, throw_lexer_version);
}
const in::A rdata_in_a;
};
const uint8_t wiredata_in_a[] = { 192, 0, 2, 1 };
TEST_F(Rdata_IN_A_Test, createFromText) {
// Normal case: no exception for either case, so the exception type
// doesn't matter.
checkFromText<in::A, isc::Exception, isc::Exception>("192.0.2.1",
rdata_in_a, false,
false);
// should reject an abbreviated form of IPv4 address
checkFromTextIN_A("10.1");
// or an IPv6 address
checkFromTextIN_A("2001:db8::1234");
// or any meaningless text as an IP address
checkFromTextIN_A("xxx");
// NetBSD's inet_pton accepts trailing space after an IPv4 address, which
// would confuse some of the tests below. We check the case differently
// in these cases depending on the strictness of inet_pton (most
// implementations seem to be stricter).
uint8_t v4addr_buf[4];
const bool reject_extra_space =
inet_pton(AF_INET, "192.0.2.1 ", v4addr_buf) == 0;
// trailing white space: only string version throws
checkFromTextIN_A("192.0.2.1 ", reject_extra_space, false);
// same for beginning white space.
checkFromTextIN_A(" 192.0.2.1", true, false);
// same for trailing non-space garbage (note that lexer version still
// ignore it; it's expected to be detected at a higher layer).
checkFromTextIN_A("192.0.2.1 xxx", reject_extra_space, false);
// nul character after a valid textual representation.
string nul_after_addr = "192.0.2.1";
nul_after_addr.push_back(0);
checkFromTextIN_A(nul_after_addr, true, true);
// a valid address surrounded by parentheses; only okay with lexer
checkFromTextIN_A("(192.0.2.1)", true, false);
// input that would cause lexer-specific error; it's bad text as an
// address so should result in the string version, too.
checkFromText<in::A, InvalidRdataText, MasterLexer::LexerError>(
")192.0.2.1", rdata_in_a);
}
TEST_F(Rdata_IN_A_Test, createFromWire) {
// Valid data
EXPECT_EQ(0, rdata_in_a.compare(
*rdataFactoryFromFile(RRType::A(), RRClass::IN(),
"rdata_in_a_fromWire")));
// RDLENGTH is too short
EXPECT_THROW(rdataFactoryFromFile(RRType::A(), RRClass::IN(),
"rdata_in_a_fromWire", 6),
DNSMessageFORMERR);
// RDLENGTH is too long
EXPECT_THROW(rdataFactoryFromFile(RRType::A(), RRClass::IN(),
"rdata_in_a_fromWire", 12),
DNSMessageFORMERR);
// buffer too short.
EXPECT_THROW(rdataFactoryFromFile(RRType::A(), RRClass::IN(),
"rdata_in_a_fromWire", 19),
DNSMessageFORMERR);
}
TEST_F(Rdata_IN_A_Test, toWireBuffer) {
rdata_in_a.toWire(obuffer);
matchWireData(wiredata_in_a, sizeof (wiredata_in_a),
obuffer.getData(), obuffer.getLength());
}
TEST_F(Rdata_IN_A_Test, toWireRenderer) {
rdata_in_a.toWire(renderer);
matchWireData(wiredata_in_a, sizeof (wiredata_in_a),
renderer.getData(), renderer.getLength());
}
TEST_F(Rdata_IN_A_Test, toText) {
EXPECT_EQ("192.0.2.1", rdata_in_a.toText());
// this shouldn't make the code crash
const string longaddr("255.255.255.255");
EXPECT_EQ(longaddr, in::A(longaddr).toText());
}
TEST_F(Rdata_IN_A_Test, compare) {
const in::A small1("1.1.1.1");
const in::A small2("1.2.3.4");
const in::A large1("255.255.255.255");
const in::A large2("4.3.2.1");
// trivial case: self equivalence
// cppcheck-suppress uselessCallsCompare
EXPECT_EQ(0, small1.compare(small1));
// confirm these are compared as unsigned values
EXPECT_GT(0, small1.compare(large1));
EXPECT_LT(0, large1.compare(small1));
// confirm these are compared in network byte order
EXPECT_GT(0, small2.compare(large2));
EXPECT_LT(0, large2.compare(small2));
// comparison attempt between incompatible RR types should be rejected
EXPECT_THROW(rdata_in_a.compare(*RdataTest::rdata_nomatch), bad_cast);
}
}
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