Refactored options into the dhcpv6 package to resolve circular imports. Sadly.

1 files changed, 86 insertions, 0 deletions

diff --git a/dhcpv6/option_prefixdelegation.go b/dhcpv6/option_prefixdelegation.go
new file mode 100644
index 0000000..2a211c0
--- /dev/null
+++ b/dhcpv6/option_prefixdelegation.go
@@ -0,0 +1,86 @@
+package dhcpv6
+
+// This module defines the OptIAForPrefixDelegation structure.
+// https://www.ietf.org/rfc/rfc3633.txt
+
+import (
+	"encoding/binary"
+	"fmt"
+)
+
+type OptIAForPrefixDelegation struct {
+	iaId    [4]byte
+	t1      uint32
+	t2      uint32
+	options []byte
+}
+
+func (op *OptIAForPrefixDelegation) Code() OptionCode {
+	return OPTION_IA_PD
+}
+
+func (op *OptIAForPrefixDelegation) ToBytes() []byte {
+	buf := make([]byte, 16)
+	binary.BigEndian.PutUint16(buf[0:2], uint16(OPTION_IA_PD))
+	binary.BigEndian.PutUint16(buf[2:4], uint16(op.Length()))
+	copy(buf[4:8], op.iaId[:])
+	binary.BigEndian.PutUint32(buf[8:12], op.t1)
+	binary.BigEndian.PutUint32(buf[12:16], op.t2)
+	buf = append(buf, op.options...)
+	return buf
+}
+
+func (op *OptIAForPrefixDelegation) IAID() []byte {
+	return op.iaId[:]
+}
+
+func (op *OptIAForPrefixDelegation) SetIAID(iaId [4]byte) {
+	op.iaId = iaId
+}
+
+func (op *OptIAForPrefixDelegation) T1() uint32 {
+	return op.t1
+}
+
+func (op *OptIAForPrefixDelegation) SetT1(t1 uint32) {
+	op.t1 = t1
+}
+
+func (op *OptIAForPrefixDelegation) T2() uint32 {
+	return op.t2
+}
+
+func (op *OptIAForPrefixDelegation) SetT2(t2 uint32) {
+	op.t2 = t2
+}
+
+func (op *OptIAForPrefixDelegation) Options() []byte {
+	return op.options
+}
+
+func (op *OptIAForPrefixDelegation) SetOptions(options []byte) {
+	op.options = options
+}
+
+func (op *OptIAForPrefixDelegation) Length() int {
+	return 12 + len(op.options)
+}
+
+func (op *OptIAForPrefixDelegation) String() string {
+	return fmt.Sprintf("OptIAForPrefixDelegation{IAID=%v, t1=%v, t2=%v, options=%v}",
+		op.iaId, op.t1, op.t2, op.options)
+}
+
+// build an OptIAForPrefixDelegation structure from a sequence of bytes.
+// The input data does not include option code and length bytes.
+func ParseOptIAForPrefixDelegation(data []byte) (*OptIAForPrefixDelegation, error) {
+	opt := OptIAForPrefixDelegation{}
+	if len(data) < 12 {
+		return nil, fmt.Errorf("Invalid IA for Prefix Delegation data length. Expected at least 12 bytes, got %v", len(data))
+	}
+	copy(opt.iaId[:], data[:4])
+	opt.t1 = binary.BigEndian.Uint32(data[4:8])
+	opt.t2 = binary.BigEndian.Uint32(data[8:12])
+	opt.options = append(opt.options, data[12:]...)
+	return &opt, nil
+}