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package dhcpv4
import (
"fmt"
)
// AutoConfiguration implements encoding and decoding functions for a
// byte enumeration as used in RFC 2563, Section 2.
type AutoConfiguration byte
const (
DoNotAutoConfigure AutoConfiguration = 0
AutoConfigure AutoConfiguration = 1
)
var autoConfigureToString = map[AutoConfiguration]string{
DoNotAutoConfigure: "DoNotAutoConfigure",
AutoConfigure: "AutoConfigure",
}
// ToBytes returns a serialized stream of bytes for this option.
func (o AutoConfiguration) ToBytes() []byte {
return []byte{byte(o)}
}
// String returns a human-readable string for this option.
func (o AutoConfiguration) String() string {
s := autoConfigureToString[o]
if s != "" {
return s
}
return fmt.Sprintf("UNKNOWN (%d)", byte(o))
}
// FromBytes parses a a single byte into AutoConfiguration
func (o *AutoConfiguration) FromBytes(data []byte) error {
if len(data) == 1 {
*o = AutoConfiguration(data[0])
return nil
}
return fmt.Errorf("Invalid buffer length (%d)", len(data))
}
// GetByte parses any single-byte option
func GetByte(code OptionCode, o Options) (byte, error) {
data := o.Get(code)
if data == nil {
return 0, fmt.Errorf("option not present")
}
if len(data) != 1 {
return 0, fmt.Errorf("Invalid buffer length (%d)", len(data))
}
return data[0], nil
}
// OptAutoConfigure returns a new AutoConfigure option.
//
// The AutoConfigure option is described by RFC 2563, Section 2.
func OptAutoConfigure(autoconf AutoConfiguration) Option {
return Option{Code: OptionAutoConfigure, Value: autoconf}
}
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