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// 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 <asiolink/io_address.h>
#include <dhcp/dhcp6.h>
#include <dhcp/libdhcp++.h>
#include <dhcp/option6_addrlst.h>
#include <exceptions/exceptions.h>
#include <util/io_utilities.h>
#include <sstream>
#include <arpa/inet.h>
#include <stdint.h>
using namespace std;
using namespace isc;
using namespace isc::dhcp;
using namespace isc::asiolink;
using namespace isc::util;
namespace isc {
namespace dhcp {
Option6AddrLst::Option6AddrLst(uint16_t type, const AddressContainer& addrs)
: Option(V6, type), addrs_(addrs) {
}
Option6AddrLst::Option6AddrLst(uint16_t type, const isc::asiolink::IOAddress& addr)
: Option(V6, type), addrs_(1,addr) {
}
Option6AddrLst::Option6AddrLst(uint16_t type, OptionBufferConstIter begin,
OptionBufferConstIter end)
: Option(V6, type) {
unpack(begin, end);
}
OptionPtr
Option6AddrLst::clone() const {
return (cloneInternal<Option6AddrLst>());
}
void
Option6AddrLst::setAddress(const isc::asiolink::IOAddress& addr) {
if (!addr.isV6()) {
isc_throw(BadValue, "Can't store non-IPv6 address in Option6AddrLst option");
}
addrs_.clear();
addrs_.push_back(addr);
}
void
Option6AddrLst::setAddresses(const AddressContainer& addrs) {
addrs_ = addrs;
}
void Option6AddrLst::pack(isc::util::OutputBuffer& buf, bool) const {
buf.writeUint16(type_);
// len() returns complete option length.
// len field contains length without 4-byte option header
buf.writeUint16(len() - getHeaderLen());
for (auto const& addr : addrs_) {
if (!addr.isV6()) {
isc_throw(isc::BadValue, addr.toText()
<< " is not an IPv6 address");
}
// If an address is IPv6 address it should have assumed
// length of V6ADDRESS_LEN.
buf.writeData(&addr.toBytes()[0], V6ADDRESS_LEN);
}
}
void Option6AddrLst::unpack(OptionBufferConstIter begin,
OptionBufferConstIter end) {
if ((distance(begin, end) % V6ADDRESS_LEN) != 0) {
isc_throw(OutOfRange, "Option " << type_
<< " malformed: len=" << distance(begin, end)
<< " is not divisible by 16.");
}
while (begin != end) {
addrs_.push_back(IOAddress::fromBytes(AF_INET6, &(*begin)));
begin += V6ADDRESS_LEN;
}
}
std::string Option6AddrLst::toText(int indent) const {
stringstream output;
output << headerToText(indent) << ":";
for (auto const& addr : addrs_) {
output << " " << addr;
}
return (output.str());
}
uint16_t Option6AddrLst::len() const {
return (OPTION6_HDR_LEN + addrs_.size() * V6ADDRESS_LEN);
}
} // end of namespace isc::dhcp
} // end of namespace isc
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