add back in udhcp support

1 files changed, 141 insertions, 0 deletions

diff --git a/networking/udhcp/dhcpd.h b/networking/udhcp/dhcpd.h
new file mode 100644
index 0000000..a060002
--- /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