diff options
Diffstat (limited to 'networking/udhcp/dhcpd.h')
| -rw-r--r-- | networking/udhcp/dhcpd.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/networking/udhcp/dhcpd.h b/networking/udhcp/dhcpd.h new file mode 100644 index 000000000..a060002cd --- /dev/null +++ b/networking/udhcp/dhcpd.h @@ -0,0 +1,141 @@ +/* dhcpd.h */ +#ifndef _DHCPD_H +#define _DHCPD_H + +#include <netinet/ip.h> +#include <netinet/udp.h> + +#include "libbb_udhcp.h" +#include "leases.h" +#include "version.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 2 + +struct 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 |