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// Copyright (C) 2012-2013 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 <asiolink/io_address.h>
#include <dhcpsrv/addr_utilities.h>
#include <dhcpsrv/pool.h>
#include <sstream>
using namespace isc::asiolink;
namespace isc {
namespace dhcp {
Pool::Pool(Lease::Type type, const isc::asiolink::IOAddress& first,
const isc::asiolink::IOAddress& last)
:id_(getNextID()), first_(first), last_(last), type_(type) {
}
bool Pool::inRange(const isc::asiolink::IOAddress& addr) const {
return (first_.smallerEqual(addr) && addr.smallerEqual(last_));
}
std::string
Pool::toText() const {
std::stringstream tmp;
tmp << "type=" << Lease::typeToText(type_) << ", " << first_
<< "-" << last_;
return (tmp.str());
}
Pool4::Pool4(const isc::asiolink::IOAddress& first,
const isc::asiolink::IOAddress& last)
:Pool(Lease::TYPE_V4, first, last) {
// check if specified address boundaries are sane
if (!first.isV4() || !last.isV4()) {
isc_throw(BadValue, "Invalid Pool4 address boundaries: not IPv4");
}
if (last < first) {
isc_throw(BadValue, "Upper boundary is smaller than lower boundary.");
}
}
Pool4::Pool4( const isc::asiolink::IOAddress& prefix, uint8_t prefix_len)
:Pool(Lease::TYPE_V4, prefix, IOAddress("0.0.0.0")) {
// check if the prefix is sane
if (!prefix.isV4()) {
isc_throw(BadValue, "Invalid Pool4 address boundaries: not IPv4");
}
// check if the prefix length is sane
if (prefix_len == 0 || prefix_len > 32) {
isc_throw(BadValue, "Invalid prefix length");
}
// Let's now calculate the last address in defined pool
last_ = lastAddrInPrefix(prefix, prefix_len);
}
Pool6::Pool6(Lease::Type type, const isc::asiolink::IOAddress& first,
const isc::asiolink::IOAddress& last)
:Pool(type, first, last), prefix_len_(128) {
// check if specified address boundaries are sane
if (!first.isV6() || !last.isV6()) {
isc_throw(BadValue, "Invalid Pool6 address boundaries: not IPv6");
}
if ( (type != Lease::TYPE_NA) && (type != Lease::TYPE_TA) &&
(type != Lease::TYPE_PD)) {
isc_throw(BadValue, "Invalid Pool6 type: " << static_cast<int>(type)
<< ", must be TYPE_IA, TYPE_TA or TYPE_PD");
}
if (last < first) {
isc_throw(BadValue, "Upper boundary is smaller than lower boundary.");
// This check is a bit strict. If we decide that it is too strict,
// we need to comment it and uncomment lines below.
// On one hand, letting the user specify 2001::f - 2001::1 is nice, but
// on the other hand, 2001::1 may be a typo and the user really meant
// 2001::1:0 (or 1 followed by some hex digit), so a at least a warning
// would be useful.
// first_ = last;
// last_ = first;
}
// TYPE_PD is not supported by this constructor. first-last style
// parameters are for IA and TA only. There is another dedicated
// constructor for that (it uses prefix/length)
if ((type != Lease::TYPE_NA) && (type != Lease::TYPE_TA)) {
isc_throw(BadValue, "Invalid Pool6 type specified:"
<< static_cast<int>(type));
}
}
Pool6::Pool6(Lease::Type type, const isc::asiolink::IOAddress& prefix,
uint8_t prefix_len, uint8_t delegated_len /* = 128 */)
:Pool(type, prefix, IOAddress("::")), prefix_len_(delegated_len) {
// check if the prefix is sane
if (!prefix.isV6()) {
isc_throw(BadValue, "Invalid Pool6 address boundaries: not IPv6");
}
// check if the prefix length is sane
if (prefix_len == 0 || prefix_len > 128) {
isc_throw(BadValue, "Invalid prefix length: " << prefix_len);
}
if (prefix_len > delegated_len) {
isc_throw(BadValue, "Delegated length (" << static_cast<int>(delegated_len)
<< ") must be longer than prefix length ("
<< static_cast<int>(prefix_len) << ")");
}
if ( ( (type == Lease::TYPE_NA) || (type == Lease::TYPE_TA)) &&
(delegated_len != 128)) {
isc_throw(BadValue, "For IA or TA pools, delegated prefix length must "
<< " be 128.");
}
/// @todo: We should probably implement checks against weird addresses
/// here, like ::, starting with fe80, starting with ff etc. .
// Let's now calculate the last address in defined pool
last_ = lastAddrInPrefix(prefix, prefix_len);
}
std::string
Pool6::toText() const {
std::stringstream tmp;
tmp << "type=" << Lease::typeToText(type_) << ", " << first_
<< "-" << last_ << ", delegated_len="
<< static_cast<int>(prefix_len_);
return (tmp.str());
}
}; // end of isc::dhcp namespace
}; // end of isc namespace
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