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271 | // Copyright (C) 2011-2024 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 <dhcp/dhcp6.h>
#include <dhcp/option.h>
#include <dhcp/option_int.h>
#include <dhcp/option6_iaprefix.h>
#include <util/buffer.h>
#include <boost/scoped_ptr.hpp><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <gtest/gtest.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <iostream><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <sstream><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <arpa/inet.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
using namespace std;
using namespace isc;
using namespace isc::dhcp;
using namespace isc::util;
using namespace isc::asiolink;
namespace {
class Option6IAPrefixTest : public ::testing::Test {
public:
Option6IAPrefixTest() : buf_(255), out_buf_(255) {
for (unsigned i = 0; i < 255; i++) {
buf_[i] = 255 - i;
}
}
/// @brief creates on-wire representation of IAPREFIX option
///
/// buf_ field is set up to have IAPREFIX with preferred=1000,
/// valid=3000000000 and prefix being 2001:db8:1:0:afaf:0:dead:beef/77
void setExampleBuffer() {
for (int i = 0; i < 255; i++) {
buf_[i] = 0;
}
buf_[ 0] = 0x00;
buf_[ 1] = 0x00;
buf_[ 2] = 0x03;
buf_[ 3] = 0xe8; // preferred lifetime = 1000
buf_[ 4] = 0xb2;
buf_[ 5] = 0xd0;
buf_[ 6] = 0x5e;
buf_[ 7] = 0x00; // valid lifetime = 3,000,000,000
buf_[ 8] = 77; // Prefix length = 77
buf_[ 9] = 0x20;
buf_[10] = 0x01;
buf_[11] = 0x0d;
buf_[12] = 0xb8;
buf_[13] = 0x00;
buf_[14] = 0x01;
buf_[17] = 0xaf;
buf_[18] = 0xaf;
buf_[21] = 0xde;
buf_[22] = 0xad;
buf_[23] = 0xbe;
buf_[24] = 0xef; // 2001:db8:1:0:afaf:0:dead:beef
}
/// @brief Checks whether specified IAPREFIX option meets expected values
///
/// To be used with option generated by setExampleBuffer
///
/// @param opt IAPREFIX option being tested
/// @param expected_type expected option type
/// @param expected_length Expected length of the prefix.
/// @param expected_address Expected prefix value.
void checkOption(Option6IAPrefix& opt, const uint16_t expected_type,
const uint8_t expected_length,
const IOAddress& expected_address) {
// Check if all fields have expected values
EXPECT_EQ(Option::V6, opt.getUniverse());
EXPECT_EQ(expected_type, opt.getType());
EXPECT_EQ(expected_address, opt.getAddress());
EXPECT_EQ(1000, opt.getPreferred());
EXPECT_EQ(3000000000U, opt.getValid());
// uint8_t is often represented as a character type (char). Convert it
// to integer so as it is logged as a numeric value instead.
EXPECT_EQ(static_cast<int>(expected_length),
static_cast<int>(opt.getLength()));
// 4 bytes header + 25 bytes content
EXPECT_EQ(Option::OPTION6_HDR_LEN + Option6IAPrefix::OPTION6_IAPREFIX_LEN,
opt.len());
}
/// @brief Checks whether content of output buffer is correct
///
/// Output buffer is expected to be filled with an option matching
/// buf_ content as defined in setExampleBuffer().
///
/// @param expected_type expected option type
void checkOutputBuffer(uint16_t expected_type) {
// Check if pack worked properly:
const uint8_t* out = out_buf_.getData();
// - if option type is correct
EXPECT_EQ(expected_type, out[0]*256 + out[1]);
// - if option length is correct
EXPECT_EQ(25, out[2]*256 + out[3]);
// - if option content is correct
EXPECT_EQ(0, memcmp(out + 4, &buf_[0], 25));
}
OptionBuffer buf_;
OutputBuffer out_buf_;
};
// Tests if a received option is parsed correctly. For the prefix length between
// 0 and 128 the non-significant bits should be set to 0.
TEST_F(Option6IAPrefixTest, parseShort) {<--- syntax error
setExampleBuffer();
// Create an option (unpack content)
boost::scoped_ptr<Option6IAPrefix> opt;
ASSERT_NO_THROW(opt.reset(new Option6IAPrefix(D6O_IAPREFIX, buf_.begin(),
buf_.begin() + 25)));
ASSERT_TRUE(opt);
// Pack this option
opt->pack(out_buf_);
EXPECT_EQ(29, out_buf_.getLength());
// The non-significant bits (above 77) of the received prefix should be
// set to zero.
checkOption(*opt, D6O_IAPREFIX, 77, IOAddress("2001:db8:1:0:afa8::"));
// Set non-significant bits in the reference buffer to 0, so as the buffer
// can be directly compared with the option buffer.
buf_[18] = 0xa8;
buf_.insert(buf_.begin() + 19, 5, 0);
checkOutputBuffer(D6O_IAPREFIX);
// Check that option can be disposed safely
EXPECT_NO_THROW(opt.reset());
}
// Tests if a received option holding prefix of 128 bits is parsed correctly.
TEST_F(Option6IAPrefixTest, parseLong) {
setExampleBuffer();
// Set prefix length to the maximal value.
buf_[8] = 128;
// Create an option (unpack content)
boost::scoped_ptr<Option6IAPrefix> opt;
ASSERT_NO_THROW(opt.reset(new Option6IAPrefix(D6O_IAPREFIX, buf_.begin(),
buf_.begin() + 25)));
ASSERT_TRUE(opt);
// Pack this option
opt->pack(out_buf_);
EXPECT_EQ(29, out_buf_.getLength());
checkOption(*opt, D6O_IAPREFIX, 128,
IOAddress("2001:db8:1:0:afaf:0:dead:beef"));
checkOutputBuffer(D6O_IAPREFIX);
// Check that option can be disposed safely
EXPECT_NO_THROW(opt.reset());
}
// Check that the prefix having length of zero is represented as a "::".
TEST_F(Option6IAPrefixTest, parseZero) {
setExampleBuffer();
// Set prefix length to 0.
buf_[8] = 0;
// Create an option (unpack content)
boost::scoped_ptr<Option6IAPrefix> opt;
ASSERT_NO_THROW(opt.reset(new Option6IAPrefix(D6O_IAPREFIX, buf_.begin(),
buf_.begin() + 25)));
ASSERT_TRUE(opt);
// Pack this option
opt->pack(out_buf_);
EXPECT_EQ(29, out_buf_.getLength());
checkOption(*opt, D6O_IAPREFIX, 0, IOAddress("::"));
// Fill the address in the reference buffer with zeros.
buf_.insert(buf_.begin() + 9, 16, 0);
checkOutputBuffer(D6O_IAPREFIX);
// Check that option can be disposed safely
EXPECT_NO_THROW(opt.reset());
}
// Checks whether a new option can be built correctly
TEST_F(Option6IAPrefixTest, build) {
boost::scoped_ptr<Option6IAPrefix> opt;
setExampleBuffer();
ASSERT_NO_THROW(opt.reset(new Option6IAPrefix(12345,
IOAddress("2001:db8:1:0:afaf:0:dead:beef"), 77,
1000, 3000000000u)));
ASSERT_TRUE(opt);
checkOption(*opt, 12345, 77, IOAddress("2001:db8:1:0:afaf:0:dead:beef"));
// Check if we can build it properly
EXPECT_NO_THROW(opt->pack(out_buf_));
EXPECT_EQ(29, out_buf_.getLength());
checkOutputBuffer(12345);
// Check that option can be disposed safely
EXPECT_NO_THROW(opt.reset());
}
// Checks negative cases
TEST_F(Option6IAPrefixTest, negative) {
// Truncated option (at least 25 bytes is needed)
EXPECT_THROW(Option6IAPrefix(D6O_IAPREFIX, buf_.begin(), buf_.begin() + 24),
OutOfRange);
// Empty option
EXPECT_THROW(Option6IAPrefix(D6O_IAPREFIX, buf_.begin(), buf_.begin()),
OutOfRange);
// This is for IPv6 prefixes only
EXPECT_THROW(Option6IAPrefix(12345, IOAddress("192.0.2.1"), 77, 1000, 2000),
BadValue);
// Prefix length can't be larger than 128
EXPECT_THROW(Option6IAPrefix(12345, IOAddress("2001:db8:1::"),
255, 1000, 2000),
BadValue);
}
// Checks if the option is converted to textual format correctly.
TEST_F(Option6IAPrefixTest, toText) {
// Create option without suboptions.
Option6IAPrefix opt(D6O_IAPREFIX, IOAddress("2001:db8:1::"), 64, 300, 400);
EXPECT_EQ("type=00026(IAPREFIX), len=00025: prefix=2001:db8:1::/64,"
" preferred-lft=300, valid-lft=400",
opt.toText());
// Add suboptions and make sure they are printed.
opt.addOption(OptionPtr(new OptionUint32(Option::V6, 123, 234)));
opt.addOption(OptionPtr(new OptionUint32(Option::V6, 222, 333)));
EXPECT_EQ("type=00026(IAPREFIX), len=00041: prefix=2001:db8:1::/64,"
" preferred-lft=300, valid-lft=400,\noptions:\n"
" type=00123, len=00004: 234 (uint32)\n"
" type=00222, len=00004: 333 (uint32)",
opt.toText());
}
}
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