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- // Copyright (C) 2012 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 <dhcp/addr_utilities.h>
- #include <asiolink/io_address.h>
- #include <dhcp/subnet.h>
- #include <dhcp/pool.h>
- using namespace isc::asiolink;
- namespace isc {
- namespace dhcp {
- Subnet::Subnet(const isc::asiolink::IOAddress& prefix, uint8_t len,
- const Triplet<uint32_t>& t1,
- const Triplet<uint32_t>& t2,
- const Triplet<uint32_t>& valid_lifetime)
- :id_(getNextID()), prefix_(prefix), prefix_len_(len), t1_(t1),
- t2_(t2), valid_(valid_lifetime) {
- if ( (prefix.getFamily() == AF_INET6 && len > 128) ||
- (prefix.getFamily() == AF_INET && len > 32) ) {
- isc_throw(BadValue, "Invalid prefix length specified for subnet: " << len);
- }
- }
- bool Subnet::inRange(const isc::asiolink::IOAddress& addr) const {
- IOAddress first = firstAddrInPrefix(prefix_, prefix_len_);
- IOAddress last = lastAddrInPrefix(prefix_, prefix_len_);
- return ((first <= addr) && (addr <= last));
- }
- Subnet4::Subnet4(const isc::asiolink::IOAddress& prefix, uint8_t length,
- const Triplet<uint32_t>& t1,
- const Triplet<uint32_t>& t2,
- const Triplet<uint32_t>& valid_lifetime)
- :Subnet(prefix, length, t1, t2, valid_lifetime) {
- if (prefix.getFamily() != AF_INET) {
- isc_throw(BadValue, "Non IPv4 prefix " << prefix.toText()
- << " specified in subnet4");
- }
- }
- void Subnet4::addPool4(const Pool4Ptr& pool) {
- IOAddress first_addr = pool->getFirstAddress();
- IOAddress last_addr = pool->getLastAddress();
- if (!inRange(first_addr) || !inRange(last_addr)) {
- isc_throw(BadValue, "Pool4 (" << first_addr.toText() << "-" << last_addr.toText()
- << " does not belong in this (" << prefix_ << "/" << prefix_len_
- << ") subnet4");
- }
- /// @todo: Check that pools do not overlap
- pools_.push_back(pool);
- }
- Pool4Ptr Subnet4::getPool4(const isc::asiolink::IOAddress& hint /* = IOAddress("::")*/ ) {
- Pool4Ptr candidate;
- for (Pool4Collection::iterator pool = pools_.begin(); pool != pools_.end(); ++pool) {
- // if we won't find anything better, then let's just use the first pool
- if (!candidate) {
- candidate = *pool;
- }
- // if the client provided a pool and there's a pool that hint is valid in,
- // then let's use that pool
- if ((*pool)->inRange(hint)) {
- return (*pool);
- }
- }
- return (candidate);
- }
- Subnet6::Subnet6(const isc::asiolink::IOAddress& prefix, uint8_t length,
- const Triplet<uint32_t>& t1,
- const Triplet<uint32_t>& t2,
- const Triplet<uint32_t>& preferred_lifetime,
- const Triplet<uint32_t>& valid_lifetime)
- :Subnet(prefix, length, t1, t2, valid_lifetime),
- preferred_(preferred_lifetime){
- if (prefix.getFamily() != AF_INET6) {
- isc_throw(BadValue, "Non IPv6 prefix " << prefix.toText()
- << " specified in subnet6");
- }
- }
- void Subnet6::addPool6(const Pool6Ptr& pool) {
- IOAddress first_addr = pool->getFirstAddress();
- IOAddress last_addr = pool->getLastAddress();
- if (!inRange(first_addr) || !inRange(last_addr)) {
- isc_throw(BadValue, "Pool6 (" << first_addr.toText() << "-" << last_addr.toText()
- << " does not belong in this (" << prefix_ << "/" << prefix_len_
- << ") subnet6");
- }
- /// @todo: Check that pools do not overlap
- pools_.push_back(pool);
- }
- Pool6Ptr Subnet6::getPool6(const isc::asiolink::IOAddress& hint /* = IOAddress("::")*/ ) {
- Pool6Ptr candidate;
- for (Pool6Collection::iterator pool = pools_.begin(); pool != pools_.end(); ++pool) {
- // if we won't find anything better, then let's just use the first pool
- if (!candidate) {
- candidate = *pool;
- }
- // if the client provided a pool and there's a pool that hint is valid in,
- // then let's use that pool
- if ((*pool)->inRange(hint)) {
- return (*pool);
- }
- }
- return (candidate);
- }
- } // end of isc::dhcp namespace
- } // end of isc namespace
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