From 042bb4b29f75f9bd9a971a71091d47d110303be6 Mon Sep 17 00:00:00 2001
From: Andrea Barberio <insomniac@slackware.it>
Date: Thu, 7 Dec 2017 00:56:15 +0000
Subject: Added RelayMsg basic parsing

---
 dhcpv6/options/options.go  |  2 ++
 dhcpv6/options/relaymsg.go | 44 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 dhcpv6/options/relaymsg.go

diff --git a/dhcpv6/options/options.go b/dhcpv6/options/options.go
index 6b587dd..2eeaa44 100644
--- a/dhcpv6/options/options.go
+++ b/dhcpv6/options/options.go
@@ -88,6 +88,8 @@ func ParseOption(dataStart []byte) (Option, error) {
 		opt, err = ParseOptIAPrefix(optData)
 	case OPTION_STATUS_CODE:
 		opt, err = ParseOptStatusCode(optData)
+	case OPTION_RELAY_MSG:
+		opt, err = ParseOptRelayMsg(optData)
 	default:
 		opt = &OptionGeneric{OptionCode: code, OptionData: optData}
 	}
diff --git a/dhcpv6/options/relaymsg.go b/dhcpv6/options/relaymsg.go
new file mode 100644
index 0000000..4384c30
--- /dev/null
+++ b/dhcpv6/options/relaymsg.go
@@ -0,0 +1,44 @@
+package options
+
+// This module defines the OptRelayMsg structure.
+// https://www.ietf.org/rfc/rfc3315.txt
+
+import (
+	"fmt"
+)
+
+type OptRelayMsg struct {
+	relayMessage []byte // FIXME this has to become []DHCPv6
+}
+
+func (op *OptRelayMsg) Code() OptionCode {
+	return OPTION_RELAY_MSG
+}
+
+func (op *OptRelayMsg) ToBytes() []byte {
+	return []byte(op.relayMessage)
+}
+
+func (op *OptRelayMsg) RelayMessage() []byte {
+	return op.relayMessage
+}
+
+func (op *OptRelayMsg) SetRelayMessage(relayMessage []byte) {
+	op.relayMessage = relayMessage
+}
+
+func (op *OptRelayMsg) Length() int {
+	return len(op.relayMessage)
+}
+
+func (op *OptRelayMsg) String() string {
+	return fmt.Sprintf("OptRelayMsg{relaymsg=%v}", op.relayMessage)
+}
+
+// build an OptRelayMsg structure from a sequence of bytes.
+// The input data does not include option code and length bytes.
+func ParseOptRelayMsg(data []byte) (*OptRelayMsg, error) {
+	opt := OptRelayMsg{}
+	opt.relayMessage = []byte(data)
+	return &opt, nil
+}
-- 
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