1 files changed, 117 insertions, 0 deletions
diff --git a/src/lib/dhcp/option6_iaaddr.cc b/src/lib/dhcp/option6_iaaddr.cc
new file mode 100644
index 0000000..1737cd1
--- /dev/null
+++ b/src/lib/dhcp/option6_iaaddr.cc
@@ -0,0 +1,117 @@
+// 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 <asiolink/io_address.h>
+#include <dhcp/dhcp6.h>
+#include <dhcp/libdhcp++.h>
+#include <dhcp/option6_iaaddr.h>
+#include <dhcp/option_space.h>
+#include <exceptions/exceptions.h>
+#include <util/io_utilities.h>
+
+#include <sstream>
+
+#include <stdint.h>
+#include <arpa/inet.h>
+
+using namespace std;
+using namespace isc::asiolink;
+using namespace isc::util;
+
+namespace isc {
+namespace dhcp {
+
+Option6IAAddr::Option6IAAddr(uint16_t type, const isc::asiolink::IOAddress& addr,
+                             uint32_t pref, uint32_t valid)
+    :Option(V6, type), addr_(addr), preferred_(pref),
+     valid_(valid) {
+    setEncapsulatedSpace(DHCP6_OPTION_SPACE);
+    if (!addr.isV6()) {
+        isc_throw(isc::BadValue, addr_ << " is not an IPv6 address");
+    }
+}
+
+Option6IAAddr::Option6IAAddr(uint32_t type, OptionBuffer::const_iterator begin,
+                             OptionBuffer::const_iterator end)
+    :Option(V6, type), addr_("::") {
+    setEncapsulatedSpace(DHCP6_OPTION_SPACE);
+    unpack(begin, end);
+}
+
+OptionPtr
+Option6IAAddr::clone() const {
+    return (cloneInternal<Option6IAAddr>());
+}
+
+void Option6IAAddr::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());
+
+    if (!addr_.isV6()) {
+        isc_throw(isc::BadValue, addr_ << " is not an IPv6 address");
+    }
+    buf.writeData(&addr_.toBytes()[0], isc::asiolink::V6ADDRESS_LEN);
+
+    buf.writeUint32(preferred_);
+    buf.writeUint32(valid_);
+
+    // parse suboption (there shouldn't be any for IAADDR)
+    packOptions(buf);
+}
+
+void Option6IAAddr::unpack(OptionBuffer::const_iterator begin,
+                      OptionBuffer::const_iterator end) {
+    if ( distance(begin, end) < OPTION6_IAADDR_LEN) {
+        isc_throw(OutOfRange, "Option " << type_ << " truncated");
+    }
+
+    // 16 bytes: IPv6 address
+    addr_ = IOAddress::fromBytes(AF_INET6, &(*begin));
+    begin += V6ADDRESS_LEN;
+
+    preferred_ = readUint32(&(*begin), distance(begin, end));
+    begin += sizeof(uint32_t);
+
+    valid_ = readUint32(&(*begin), distance(begin, end));
+    begin += sizeof(uint32_t);
+
+    unpackOptions(OptionBuffer(begin, end));
+}
+
+std::string Option6IAAddr::toText(int indent) const {
+    std::stringstream output;
+    output << headerToText(indent, "IAADDR") << ": "
+           << "address=" << addr_
+           << ", preferred-lft=" << preferred_
+           << ", valid-lft=" << valid_;
+
+    output << suboptionsToText(indent + 2);
+    return (output.str());
+}
+
+uint16_t Option6IAAddr::len() const {
+
+    uint16_t length = OPTION6_HDR_LEN + OPTION6_IAADDR_LEN;
+
+    // length of all suboptions
+    // TODO implement:
+    // protected: unsigned short Option::lenHelper(int header_size);
+    for (OptionCollection::const_iterator it = options_.begin();
+         it != options_.end();
+         ++it) {
+        length += (*it).second->len();
+    }
+    return (length);
+}
+
+} // end of namespace isc::dhcp
+} // end of namespace isc