#ifndef CRASHPOWEROS_DHCP_H
#define CRASHPOWEROS_DHCP_H

#define DHCP_CHADDR_LEN 16
#define DHCP_SNAME_LEN 64
#define DHCP_FILE_LEN 128

#define DHCP_BOOTREQUEST 1
#define DHCP_BOOTREPLY 2

#define DHCP_HARDWARE_TYPE_10_EHTHERNET 1

#define MESSAGE_TYPE_PAD 0
#define MESSAGE_TYPE_REQ_SUBNET_MASK 1
#define MESSAGE_TYPE_ROUTER 3
#define MESSAGE_TYPE_DNS 6
#define MESSAGE_TYPE_DOMAIN_NAME 15
#define MESSAGE_TYPE_REQ_IP 50
#define MESSAGE_TYPE_DHCP 53
#define MESSAGE_TYPE_PARAMETER_REQ_LIST 55
#define MESSAGE_TYPE_END 255

#define DHCP_OPTION_DISCOVER 1
#define DHCP_OPTION_OFFER 2
#define DHCP_OPTION_REQUEST 3
#define DHCP_OPTION_PACK 4

#define DHCP_SERVER_PORT 67
#define DHCP_CLIENT_PORT 68

#define DHCP_MAGIC_COOKIE 0x63825363

#include <stdint.h>

struct DHCPMessage {
    uint8_t opcode;
    uint8_t htype;
    uint8_t hlen;
    uint8_t hops;
    uint32_t xid;
    uint16_t secs;
    uint16_t flags;
    uint32_t ciaddr;
    uint32_t yiaddr;
    uint32_t siaddr;
    uint32_t giaddr;
    uint8_t chaddr[DHCP_CHADDR_LEN];
    char bp_sname[DHCP_SNAME_LEN];
    char bp_file[DHCP_FILE_LEN];
    uint32_t magic_cookie;
    uint8_t bp_options[0];
} __attribute__((packed));



int dhcp_discovery(uint8_t *mac);
void dhcp_handler(void *base);

#endif