/* dhcpd.h */#ifndef _DHCPD_H#define _DHCPD_H#include <netinet/ip.h>#include <netinet/udp.h>#include "libbb_udhcp.h"#include "leases.h"/************************************//* Defaults _you_ may want to tweak *//************************************//* the period of time the client is allowed to use that address */#define LEASE_TIME              (60*60*24*10) /* 10 days of seconds */#define LEASES_FILE		"/var/lib/misc/udhcpd.leases"/* where to find the DHCP server configuration file */#define DHCPD_CONF_FILE         "/etc/udhcpd.conf"/*****************************************************************//* Do not modify below here unless you know what you are doing!! *//*****************************************************************//* DHCP protocol -- see RFC 2131 */#define SERVER_PORT		67#define CLIENT_PORT		68#define DHCP_MAGIC		0x63825363/* DHCP option codes (partial list) */#define DHCP_PADDING		0x00#define DHCP_SUBNET		0x01#define DHCP_TIME_OFFSET	0x02#define DHCP_ROUTER		0x03#define DHCP_TIME_SERVER	0x04#define DHCP_NAME_SERVER	0x05#define DHCP_DNS_SERVER		0x06#define DHCP_LOG_SERVER		0x07#define DHCP_COOKIE_SERVER	0x08#define DHCP_LPR_SERVER		0x09#define DHCP_HOST_NAME		0x0c#define DHCP_BOOT_SIZE		0x0d#define DHCP_DOMAIN_NAME	0x0f#define DHCP_SWAP_SERVER	0x10#define DHCP_ROOT_PATH		0x11#define DHCP_IP_TTL		0x17#define DHCP_MTU		0x1a#define DHCP_BROADCAST		0x1c#define DHCP_NTP_SERVER		0x2a#define DHCP_WINS_SERVER	0x2c#define DHCP_REQUESTED_IP	0x32#define DHCP_LEASE_TIME		0x33#define DHCP_OPTION_OVER	0x34#define DHCP_MESSAGE_TYPE	0x35#define DHCP_SERVER_ID		0x36#define DHCP_PARAM_REQ		0x37#define DHCP_MESSAGE		0x38#define DHCP_MAX_SIZE		0x39#define DHCP_T1			0x3a#define DHCP_T2			0x3b#define DHCP_VENDOR		0x3c#define DHCP_CLIENT_ID		0x3d#define DHCP_FQDN		0x51#define DHCP_END		0xFF#define BOOTREQUEST		1#define BOOTREPLY		2#define ETH_10MB		1#define ETH_10MB_LEN		6#define DHCPDISCOVER		1#define DHCPOFFER		2#define DHCPREQUEST		3#define DHCPDECLINE		4#define DHCPACK			5#define DHCPNAK			6#define DHCPRELEASE		7#define DHCPINFORM		8#define BROADCAST_FLAG		0x8000#define OPTION_FIELD		0#define FILE_FIELD		1#define SNAME_FIELD		2/* miscellaneous defines */#define MAC_BCAST_ADDR		(uint8_t *) "\xff\xff\xff\xff\xff\xff"#define OPT_CODE 0#define OPT_LEN 1#define OPT_DATA 2struct option_set {	uint8_t *data;	struct option_set *next;};struct static_lease {	uint8_t *mac;	uint32_t *ip;	struct static_lease *next;};struct server_config_t {	uint32_t server;		/* Our IP, in network order */	uint32_t start;			/* Start address of leases, network order */	uint32_t end;			/* End of leases, network order */	struct option_set *options;	/* List of DHCP options loaded from the config file */	char *interface;		/* The name of the interface to use */	int ifindex;			/* Index number of the interface to use */	uint8_t arp[6];			/* Our arp address */	unsigned long lease;		/* lease time in seconds (host order) */	unsigned long max_leases;	/* maximum number of leases (including reserved address) */	char remaining;			/* should the lease file be interpreted as lease time remaining, or					 * as the time the lease expires */	unsigned long auto_time;	/* how long should udhcpd wait before writing a config file.					 * if this is zero, it will only write one on SIGUSR1 */	unsigned long decline_time;	/* how long an address is reserved if a client returns a					 * decline message */	unsigned long conflict_time;	/* how long an arp conflict offender is leased for */	unsigned long offer_time;	/* how long an offered address is reserved */	unsigned long min_lease;	/* minimum lease a client can request*/	char *lease_file;	char *pidfile;	char *notify_file;		/* What to run whenever leases are written */	uint32_t siaddr;		/* next server bootp option */	char *sname;			/* bootp server name */	char *boot_file;		/* bootp boot file option */	struct static_lease *static_leases; /* List of ip/mac pairs to assign static leases */};extern struct server_config_t server_config;extern struct dhcpOfferedAddr *leases;#endif