1 files changed, 59 insertions, 0 deletions
diff --git a/dhcpv4/bsdp/bsdp_option_version.go b/dhcpv4/bsdp/bsdp_option_version.go
new file mode 100644
index 0000000..15acb86
--- /dev/null
+++ b/dhcpv4/bsdp/bsdp_option_version.go
@@ -0,0 +1,59 @@
+// +build darwin
+
+package bsdp
+
+import (
+	"fmt"
+
+	"github.com/insomniacslk/dhcp/dhcpv4"
+)
+
+// Implements the BSDP option version. Can be one of 1.0 or 1.1
+
+// Specific versions.
+var (
+	Version1_0 = []byte{1, 0}
+	Version1_1 = []byte{1, 1}
+)
+
+// OptVersion represents a BSDP protocol version.
+type OptVersion struct {
+	Version []byte
+}
+
+// ParseOptVersion constructs an OptVersion struct from a sequence of
+// bytes and returns it, or an error.
+func ParseOptVersion(data []byte) (*OptVersion, error) {
+	if len(data) < 4 {
+		return nil, dhcpv4.ErrShortByteStream
+	}
+	code := dhcpv4.OptionCode(data[0])
+	if code != OptionVersion {
+		return nil, fmt.Errorf("expected option %v, got %v instead", OptionVersion, code)
+	}
+	length := int(data[1])
+	if length != 2 {
+		return nil, fmt.Errorf("expected length 2, got %d instead", length)
+	}
+	return &OptVersion{data[2:4]}, nil
+}
+
+// Code returns the option code.
+func (o *OptVersion) Code() dhcpv4.OptionCode {
+	return OptionVersion
+}
+
+// ToBytes returns a serialized stream of bytes for this option.
+func (o *OptVersion) ToBytes() []byte {
+	return append([]byte{byte(o.Code()), 2}, o.Version...)
+}
+
+// String returns a human-readable string for this option.
+func (o *OptVersion) String() string {
+	return fmt.Sprintf("BSDP Version -> %v.%v", o.Version[0], o.Version[1])
+}
+
+// Length returns the length of the data portion of this option.
+func (o *OptVersion) Length() int {
+	return 2
+}