/* options.h */
#ifndef _OPTIONS_H
#define _OPTIONS_H

#include "packet.h"

#define TYPE_MASK 0x0F

enum {
  OPTION_IP=1,
  OPTION_IP_PAIR,
  OPTION_STRING,
  OPTION_BOOLEAN,
  OPTION_U8,
  OPTION_U16,
  OPTION_S16,
  OPTION_U32,
  OPTION_S32
};

#define OPTION_REQ  0x10 /* have the client request this option */
#define OPTION_LIST 0x20 /* There can be a list of 1 or more of these */

struct dhcp_option {
  char name[10];
  char flags;
  uint8_t code;
};

extern struct dhcp_option dhcp_options[];
extern int option_lengths[];

uint8_t *get_option(struct dhcpMessage *packet, int code);
int end_option(uint8_t *optionptr);
int add_option_string(uint8_t *optionptr, uint8_t *string);
int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data);
uint8_t get_option_len(struct dhcpMessage *packet, int code);
#endif
