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// Copyright (C) 2011-2022 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/libdhcp++.h>
#include <dhcp/option6_ia.h>
#include <dhcp/option_space.h>
#include <exceptions/exceptions.h>
#include <util/io_utilities.h>
#include <arpa/inet.h>
#include <sstream>
#include <stdint.h>
using namespace std;
using namespace isc::util;
namespace isc {
namespace dhcp {
Option6IA::Option6IA(uint16_t type, uint32_t iaid)
:Option(Option::V6, type), iaid_(iaid), t1_(0), t2_(0) {
// IA_TA has different layout than IA_NA and IA_PD. We can't use this class
if (type == D6O_IA_TA) {
isc_throw(BadValue, "Can't use Option6IA for IA_TA as it has "
"a different layout");
}
setEncapsulatedSpace(DHCP6_OPTION_SPACE);
}
Option6IA::Option6IA(uint16_t type, OptionBufferConstIter begin,
OptionBufferConstIter end)
:Option(Option::V6, type) {
// IA_TA has different layout than IA_NA and IA_PD. We can't use this class
if (type == D6O_IA_TA) {
isc_throw(BadValue, "Can't use Option6IA for IA_TA as it has "
"a different layout");
}
setEncapsulatedSpace(DHCP6_OPTION_SPACE);
unpack(begin, end);
}
OptionPtr
Option6IA::clone() const {
return (cloneInternal<Option6IA>());
}
void Option6IA::pack(isc::util::OutputBuffer& buf, bool) const {
buf.writeUint16(type_);
buf.writeUint16(len() - OPTION6_HDR_LEN);
buf.writeUint32(iaid_);
buf.writeUint32(t1_);
buf.writeUint32(t2_);
packOptions(buf);
}
void Option6IA::unpack(OptionBufferConstIter begin,
OptionBufferConstIter end) {
// IA_NA and IA_PD have 12 bytes content (iaid, t1, t2 fields)
// followed by 0 or more sub-options.
if (distance(begin, end) < OPTION6_IA_LEN) {
isc_throw(OutOfRange, "Option " << type_ << " truncated");
}
iaid_ = readUint32(&(*begin), distance(begin, end));
begin += sizeof(uint32_t);
t1_ = readUint32(&(*begin), distance(begin, end));
begin += sizeof(uint32_t);
t2_ = readUint32(&(*begin), distance(begin, end));
begin += sizeof(uint32_t);
unpackOptions(OptionBuffer(begin, end));
}
std::string Option6IA::toText(int indent) const {
stringstream output;
switch(getType()) {
case D6O_IA_NA:
output << headerToText(indent, "IA_NA");
break;
case D6O_IA_PD:
output << headerToText(indent, "IA_PD");
break;
default:
output << headerToText(indent);
}
output << ": iaid=" << iaid_ << ", t1=" << t1_ << ", t2=" << t2_
<< suboptionsToText(indent + 2);
return (output.str());
}
uint16_t Option6IA::len() const {
uint16_t length = OPTION6_HDR_LEN /*header (4)*/ +
OPTION6_IA_LEN /* option content (12) */;
// length of all suboptions
for (OptionCollection::const_iterator it = options_.begin();
it != options_.end();
++it) {
length += (*it).second->len();
}
return (length);
}
} // end of isc::dhcp namespace
} // end of isc namespace
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