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package dhcpv4
import (
"fmt"
)
// RelayOptions is like Options, but stringifies using the Relay Agent Specific
// option space.
type RelayOptions struct {
Options
}
var relayHumanizer = OptionHumanizer{
ValueHumanizer: func(code OptionCode, data []byte) fmt.Stringer {
return OptionGeneric{data}
},
CodeHumanizer: func(c uint8) OptionCode {
return GenericOptionCode(c)
},
}
// String prints the contained options using Relay Agent-specific option code parsing.
func (r RelayOptions) String() string {
return r.Options.ToString(relayHumanizer)
}
// FromBytes parses relay agent options from data.
func (r *RelayOptions) FromBytes(data []byte) error {
r.Options = make(Options)
return r.Options.FromBytes(data)
}
// OptRelayAgentInfo returns a new DHCP Relay Agent Info option.
//
// The relay agent info option is described by RFC 3046.
func OptRelayAgentInfo(o ...Option) Option {
return Option{Code: OptionRelayAgentInformation, Value: RelayOptions{OptionsFromList(o...)}}
}
// GetRelayAgentInfo returns options embedded by the relay agent.
//
// The relay agent info option is described by RFC 3046.
func GetRelayAgentInfo(o Options) *RelayOptions {
v := o.Get(OptionRelayAgentInformation)
if v == nil {
return nil
}
var relayOptions RelayOptions
if err := relayOptions.FromBytes(v); err != nil {
return nil
}
return &relayOptions
}
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