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// Copyright (C) 2011-2015 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 <asiolink/io_address.h>
#include <dhcp/dhcp6.h>
#include <dhcp/option.h>
#include <dhcp/option6_addrlst.h>
#include <util/buffer.h>
#include <gtest/gtest.h>
#include <boost/scoped_ptr.hpp>
#include <iostream>
#include <sstream>
#include <arpa/inet.h>
using namespace std;
using namespace isc;
using namespace isc::dhcp;
using namespace isc::asiolink;
using namespace isc::util;
using boost::scoped_ptr;
namespace {
class Option6AddrLstTest : public ::testing::Test {
public:
Option6AddrLstTest(): buf_(255), out_buf_(255) {
for (unsigned i = 0; i < 255; i++) {
buf_[i] = 255 - i;
}
}
OptionBuffer buf_;
OutputBuffer out_buf_;
};
TEST_F(Option6AddrLstTest, basic) {
// Limiting tests to just a 2001:db8::/32 is *wrong*.
// Good tests check corner cases as well.
// ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff checks
// for integer overflow.
// ff02::face:b00c checks if multicast addresses
// can be represented properly.
uint8_t sampledata[] = {
// 2001:db8:1::dead:beef
0x20, 0x01, 0x0d, 0xb8, 0x00, 0x01, 0, 0,
0, 0, 0, 0, 0xde, 0xad, 0xbe, 0xef,
// ff02::face:b00c
0xff, 02, 0, 0, 0, 0, 0 , 0,
0, 0, 0, 0, 0xfa, 0xce, 0xb0, 0x0c,
// ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
uint8_t expected1[] = {
D6O_NAME_SERVERS/256, D6O_NAME_SERVERS%256,//type
0, 16, // len = 16 (1 address)
0x20, 0x01, 0x0d, 0xb8, 0x00, 0x01, 0, 0,
0, 0, 0, 0, 0xde, 0xad, 0xbe, 0xef,
};
uint8_t expected2[] = {
D6O_SIP_SERVERS_ADDR/256, D6O_SIP_SERVERS_ADDR%256,
0, 32, // len = 32 (2 addresses)
// 2001:db8:1::dead:beef
0x20, 0x01, 0x0d, 0xb8, 0x00, 0x01, 0, 0,
0, 0, 0, 0, 0xde, 0xad, 0xbe, 0xef,
// ff02::face:b00c
0xff, 02, 0, 0, 0, 0, 0 , 0,
0, 0, 0, 0, 0xfa, 0xce, 0xb0, 0x0c,
// ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
uint8_t expected3[] = {
D6O_NIS_SERVERS/256, D6O_NIS_SERVERS%256,
0, 48,
// 2001:db8:1::dead:beef
0x20, 0x01, 0x0d, 0xb8, 0x00, 0x01, 0, 0,
0, 0, 0, 0, 0xde, 0xad, 0xbe, 0xef,
// ff02::face:b00c
0xff, 02, 0, 0, 0, 0, 0 , 0,
0, 0, 0, 0, 0xfa, 0xce, 0xb0, 0x0c,
// ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
memcpy(&buf_[0], sampledata, 48);
// Just a single address
scoped_ptr<Option6AddrLst> opt1;
EXPECT_NO_THROW(
opt1.reset(new Option6AddrLst(D6O_NAME_SERVERS,
buf_.begin(), buf_.begin() + 16));
);
EXPECT_EQ(Option::V6, opt1->getUniverse());
EXPECT_EQ(D6O_NAME_SERVERS, opt1->getType());
EXPECT_EQ(20, opt1->len());
Option6AddrLst::AddressContainer addrs = opt1->getAddresses();
ASSERT_EQ(1, addrs.size());
IOAddress addr = addrs[0];
EXPECT_EQ("2001:db8:1::dead:beef", addr.toText());
// Pack this option
opt1->pack(out_buf_);
EXPECT_EQ(20, out_buf_.getLength());
EXPECT_EQ(0, memcmp(expected1, out_buf_.getData(), 20));
// Two addresses
scoped_ptr<Option6AddrLst> opt2;
EXPECT_NO_THROW(
opt2.reset(new Option6AddrLst(D6O_SIP_SERVERS_ADDR,
buf_.begin(), buf_.begin() + 32));
);
EXPECT_EQ(D6O_SIP_SERVERS_ADDR, opt2->getType());
EXPECT_EQ(36, opt2->len());
addrs = opt2->getAddresses();
ASSERT_EQ(2, addrs.size());
EXPECT_EQ("2001:db8:1::dead:beef", addrs[0].toText());
EXPECT_EQ("ff02::face:b00c", addrs[1].toText());
// Pack this option
out_buf_.clear();
opt2->pack(out_buf_);
EXPECT_EQ(36, out_buf_.getLength() );
EXPECT_EQ(0, memcmp(expected2, out_buf_.getData(), 36));
// Three addresses
scoped_ptr<Option6AddrLst> opt3;
EXPECT_NO_THROW(
opt3.reset(new Option6AddrLst(D6O_NIS_SERVERS,
buf_.begin(), buf_.begin() + 48));
);
EXPECT_EQ(D6O_NIS_SERVERS, opt3->getType());
EXPECT_EQ(52, opt3->len());
addrs = opt3->getAddresses();
ASSERT_EQ(3, addrs.size());
EXPECT_EQ("2001:db8:1::dead:beef", addrs[0].toText());
EXPECT_EQ("ff02::face:b00c", addrs[1].toText());
EXPECT_EQ("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", addrs[2].toText());
// Pack this option
out_buf_.clear();
opt3->pack(out_buf_);
EXPECT_EQ(52, out_buf_.getLength());
EXPECT_EQ(0, memcmp(expected3, out_buf_.getData(), 52));
EXPECT_NO_THROW(opt1.reset());
EXPECT_NO_THROW(opt2.reset());
EXPECT_NO_THROW(opt3.reset());
}
TEST_F(Option6AddrLstTest, constructors) {
scoped_ptr<Option6AddrLst> opt1;
EXPECT_NO_THROW(
opt1.reset(new Option6AddrLst(1234, IOAddress("::1")));
);
EXPECT_EQ(Option::V6, opt1->getUniverse());
EXPECT_EQ(1234, opt1->getType());
Option6AddrLst::AddressContainer addrs = opt1->getAddresses();
ASSERT_EQ(1, addrs.size() );
EXPECT_EQ("::1", addrs[0].toText());
addrs.clear();
addrs.push_back(IOAddress(string("fe80::1234")));
addrs.push_back(IOAddress(string("2001:db8:1::baca")));
scoped_ptr<Option6AddrLst> opt2;
EXPECT_NO_THROW(
opt2.reset(new Option6AddrLst(5678, addrs));
);
Option6AddrLst::AddressContainer check = opt2->getAddresses();
ASSERT_EQ(2, check.size() );
EXPECT_EQ("fe80::1234", check[0].toText());
EXPECT_EQ("2001:db8:1::baca", check[1].toText());
EXPECT_NO_THROW(opt1.reset());
EXPECT_NO_THROW(opt2.reset());
}
TEST_F(Option6AddrLstTest, setAddress) {
scoped_ptr<Option6AddrLst> opt1;
EXPECT_NO_THROW(
opt1.reset(new Option6AddrLst(1234, IOAddress("::1")));
);
opt1->setAddress(IOAddress("2001:db8:1::2"));
/// TODO It used to be ::2 address, but io_address represents
/// it as ::0.0.0.2. Purpose of this test is to verify
/// that setAddress() works, not deal with subtleties of
/// io_address handling of IPv4-mapped IPv6 addresses, we
/// switched to a more common address. User interested
/// in pursuing this matter further is encouraged to look
/// at section 2.5.5 of RFC4291 (and possibly implement
/// a test for IOAddress)
Option6AddrLst::AddressContainer addrs = opt1->getAddresses();
ASSERT_EQ(1, addrs.size());
EXPECT_EQ("2001:db8:1::2", addrs[0].toText());
EXPECT_NO_THROW(opt1.reset());
}
// This test checks that the option holding IPv6 address list can
// be converted to textual format.
TEST_F(Option6AddrLstTest, toText) {
Option6AddrLst opt(1234, IOAddress("2001:db8:1::1"));
// Generate a few IPv6 addresses.
Option6AddrLst::AddressContainer addresses;
for (int i = 2; i < 6; ++i) {
std::stringstream s;
s << "2001:db8:1::" << i;
addresses.push_back(IOAddress(s.str()));
}
opt.setAddresses(addresses);
EXPECT_EQ("type=01234, len=00064: 2001:db8:1::2 2001:db8:1::3 "
"2001:db8:1::4 2001:db8:1::5", opt.toText());
}
// A helper for the 'empty' test. Exercise public interfaces of an empty
// Option6AddrLst. It assumes the option type is D6O_DHCPV4_O_DHCPV6_SERVER.
void
checkEmpty(Option6AddrLst& addrs) {
const uint8_t expected[] = {
D6O_DHCPV4_O_DHCPV6_SERVER/256, D6O_DHCPV4_O_DHCPV6_SERVER%256,
0, 0
};
EXPECT_EQ(4, addrs.len()); // just 2-byte type and 2-byte len fields
EXPECT_EQ("type=00088, len=00000:", addrs.toText());
OutputBuffer out_buf(255);
addrs.pack(out_buf);
EXPECT_EQ(4, out_buf.getLength());
EXPECT_EQ(0, memcmp(expected, out_buf.getData(), 4));
}
// Confirms no disruption happens for an empty set of addresses.
TEST_F(Option6AddrLstTest, empty) {
boost::scoped_ptr<Option6AddrLst> addrs(
new Option6AddrLst(D6O_DHCPV4_O_DHCPV6_SERVER,
Option6AddrLst::AddressContainer()));
checkEmpty(*addrs);
const OptionBuffer empty_buf;
addrs.reset(new Option6AddrLst(D6O_DHCPV4_O_DHCPV6_SERVER,
empty_buf.begin(), empty_buf.end()));
checkEmpty(*addrs);
}
} // namespace
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