+/* vi: set sw=4 ts=4: */
/* 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 */
/************************************/
#define DHCP_T2 0x3b
#define DHCP_VENDOR 0x3c
#define DHCP_CLIENT_ID 0x3d
+#define DHCP_FQDN 0x51
#define DHCP_END 0xFF
#define SNAME_FIELD 2
/* miscellaneous defines */
-#define MAC_BCAST_ADDR (unsigned char *) "\xff\xff\xff\xff\xff\xff"
+#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 {
- unsigned char *data;
+ uint8_t *data;
struct option_set *next;
};
+struct static_lease {
+ uint8_t *mac;
+ uint32_t *ip;
+ struct static_lease *next;
+};
+
struct server_config_t {
- u_int32_t server; /* Our IP, in network order */
- u_int32_t start; /* Start address of leases, network order */
- u_int32_t end; /* End of leases, network order */
+ 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 */
- unsigned char arp[6]; /* Our arp address */
+ 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.
+ 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*/
+ 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 */
- u_int32_t siaddr; /* next server bootp option */
+ 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;
-
+
+
+/*** leases.h ***/
+
+struct dhcpOfferedAddr {
+ uint8_t chaddr[16];
+ uint32_t yiaddr; /* network order */
+ uint32_t expires; /* host order */
+};
+
+extern uint8_t blank_chaddr[];
+
+void clear_lease(uint8_t *chaddr, uint32_t yiaddr);
+struct dhcpOfferedAddr *add_lease(uint8_t *chaddr, uint32_t yiaddr, unsigned long lease);
+int lease_expired(struct dhcpOfferedAddr *lease);
+struct dhcpOfferedAddr *oldest_expired_lease(void);
+struct dhcpOfferedAddr *find_lease_by_chaddr(uint8_t *chaddr);
+struct dhcpOfferedAddr *find_lease_by_yiaddr(uint32_t yiaddr);
+uint32_t find_address(int check_expired);
+
+
+/*** static_leases.h ***/
+
+/* Config file will pass static lease info to this function which will add it
+ * to a data structure that can be searched later */
+int addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t *ip);
+/* Check to see if a mac has an associated static lease */
+uint32_t getIpByMac(struct static_lease *lease_struct, void *arg);
+/* Check to see if an ip is reserved as a static ip */
+uint32_t reservedIp(struct static_lease *lease_struct, uint32_t ip);
+/* Print out static leases just to check what's going on (debug code) */
+void printStaticLeases(struct static_lease **lease_struct);
+
+
+/*** serverpacket.h ***/
+
+int sendOffer(struct dhcpMessage *oldpacket);
+int sendNAK(struct dhcpMessage *oldpacket);
+int sendACK(struct dhcpMessage *oldpacket, uint32_t yiaddr);
+int send_inform(struct dhcpMessage *oldpacket);
+
+
+/*** files.h ***/
+
+struct config_keyword {
+ const char *keyword;
+ int (* const handler)(const char *line, void *var);
+ void *var;
+ const char *def;
+};
+
+int read_config(const char *file);
+void write_leases(void);
+void read_leases(const char *file);
+struct option_set *find_option(struct option_set *opt_list, char code);
+
#endif