Adding upstream version 2.4.1.upstream/2.4.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/src/lib/dhcpsrv/random_allocation_state.cc b/src/lib/dhcpsrv/random_allocation_state.cc
new file mode 100644
index 0000000..5d0fd0b
--- /dev/null
+++ b/src/lib/dhcpsrv/random_allocation_state.cc
@@ -0,0 +1,40 @@
+// Copyright (C) 2022-2023 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 <dhcpsrv/random_allocation_state.h>
+#include <boost/make_shared.hpp>
+
+using namespace isc::asiolink;
+
+namespace isc {
+namespace dhcp {
+
+PoolRandomAllocationStatePtr
+PoolRandomAllocationState::create(const PoolPtr& pool) {
+    if (pool->getType() == Lease::TYPE_PD) {
+        // Pool classes ensure that the proper type is used for
+        // the IPv6 specific lease types, so we can just cast
+        // to the Pool6 pointer.
+        auto pd_pool = boost::dynamic_pointer_cast<Pool6>(pool);
+        return (boost::make_shared<PoolRandomAllocationState>(pd_pool->getFirstAddress(),
+                                                              pd_pool->getLastAddress(),
+                                                              pd_pool->getLength()));
+    }
+    return (boost::make_shared<PoolRandomAllocationState>(pool->getFirstAddress(), pool->getLastAddress()));
+}
+
+PoolRandomAllocationState::PoolRandomAllocationState(const IOAddress& first, const IOAddress& last)
+    : permutation_(new IPRangePermutation(AddressRange(first, last))) {
+}
+
+PoolRandomAllocationState::PoolRandomAllocationState(const IOAddress& first, const IOAddress& last,
+                                                     const uint8_t delegated)
+    : permutation_(new IPRangePermutation(PrefixRange(first, last, delegated))) {
+}
+
+} // end of namespace isc::dhcp
+} // end of namespace isc