Diff of /trunk/mkinitrd-magellan/busybox/networking/udhcp/dhcpd.h

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	revision 815 by niro, Sat Sep 1 22:45:15 2007 UTC	revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
#	Line 1	Line 1
1	/* vi: set sw=4 ts=4: */	/* vi: set sw=4 ts=4: */
2	/* dhcpd.h */	/* dhcpd.h */
3
4	#ifndef _DHCPD_H	#ifndef _DHCPD_H
5	#define _DHCPD_H	#define _DHCPD_H
6
7		#if __GNUC_PREREQ(4,1)
8		# pragma GCC visibility push(hidden)
9		#endif
10
11	/************************************/	/************************************/
12	/* Defaults _you_ may want to tweak */	/* Defaults _you_ may want to tweak */
13	/************************************/	/************************************/
14
15	/* the period of time the client is allowed to use that address */	/* the period of time the client is allowed to use that address */
16	#define LEASE_TIME              (60*60*24*10) /* 10 days of seconds */	#define LEASE_TIME              (60*60*24*10) /* 10 days of seconds */
17	#define LEASES_FILE "/var/lib/misc/udhcpd.leases"	#define LEASES_FILE CONFIG_DHCPD_LEASES_FILE
18
19	/* where to find the DHCP server configuration file */	/* where to find the DHCP server configuration file */
20	#define DHCPD_CONF_FILE         "/etc/udhcpd.conf"	#define DHCPD_CONF_FILE         "/etc/udhcpd.conf"
21
	/*****************************************************************/
	/* 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
22	struct option_set {	struct option_set {
23	uint8_t *data;	uint8_t *data;
24	struct option_set *next;	struct option_set *next;
25	};	};
26
27	struct static_lease {	struct static_lease {
28		struct static_lease *next;
29	uint8_t *mac;	uint8_t *mac;
30	uint32_t *ip;	uint32_t *ip;
	struct static_lease *next;
31	};	};
32
33	struct server_config_t {	struct server_config_t {
34	uint32_t server; /* Our IP, in network order */	uint32_t server;                /* Our IP, in network order */
35	uint32_t start; /* Start address of leases, network order */	#if ENABLE_FEATURE_UDHCP_PORT
36	uint32_t end; /* End of leases, network order */	uint16_t port;
37	struct option_set *options; /* List of DHCP options loaded from the config file */	#endif
38	char *interface; /* The name of the interface to use */	/* start,end are in host order: we need to compare start <= ip <= end */
39	int ifindex; /* Index number of the interface to use */	uint32_t start_ip;              /* Start address of leases, in host order */
40	uint8_t arp[6]; /* Our arp address */	uint32_t end_ip;                /* End of leases, in host order */
41	unsigned long lease; /* lease time in seconds (host order) */	struct option_set *options;     /* List of DHCP options loaded from the config file */
42	unsigned long max_leases; /* maximum number of leases (including reserved address) */	char *interface;                /* The name of the interface to use */
43	char remaining; /* should the lease file be interpreted as lease time remaining, or	int ifindex;                    /* Index number of the interface to use */
44	* as the time the lease expires */	uint8_t arp[6];                 /* Our arp address */
45	unsigned long auto_time; /* how long should udhcpd wait before writing a config file.	char remaining;                 /* should the lease file be interpreted as lease time remaining, or
46	* if this is zero, it will only write one on SIGUSR1 */	* as the time the lease expires */
47	unsigned long decline_time; /* how long an address is reserved if a client returns a	uint32_t lease;                /* lease time in seconds (host order) */
48	* decline message */	uint32_t max_leases;            /* maximum number of leases (including reserved address) */
49	unsigned long conflict_time; /* how long an arp conflict offender is leased for */	uint32_t auto_time;             /* how long should udhcpd wait before writing a config file.
50	unsigned long offer_time; /* how long an offered address is reserved */	* if this is zero, it will only write one on SIGUSR1 */
51	unsigned long min_lease; /* minimum lease a client can request*/	uint32_t decline_time;          /* how long an address is reserved if a client returns a
52		* decline message */
53		uint32_t conflict_time;         /* how long an arp conflict offender is leased for */
54		uint32_t offer_time;            /* how long an offered address is reserved */
55		uint32_t min_lease;             /* minimum lease a client can request */
56	char *lease_file;	char *lease_file;
57	char *pidfile;	char *pidfile;
58	char *notify_file; /* What to run whenever leases are written */	char *notify_file;              /* What to run whenever leases are written */
59	uint32_t siaddr; /* next server bootp option */	uint32_t siaddr;                /* next server bootp option */
60	char *sname; /* bootp server name */	char *sname;                    /* bootp server name */
61	char *boot_file; /* bootp boot file option */	char *boot_file;                /* bootp boot file option */
62	struct static_lease *static_leases; /* List of ip/mac pairs to assign static leases */	struct static_lease *static_leases; /* List of ip/mac pairs to assign static leases */
63	};	};
64
65	extern struct server_config_t server_config;	#define server_config (*(struct server_config_t*)&bb_common_bufsiz1)
66		/* client_config sits in 2nd half of bb_common_bufsiz1 */
67
68		#if ENABLE_FEATURE_UDHCP_PORT
69		#define SERVER_PORT (server_config.port)
70		#else
71		#define SERVER_PORT 67
72		#endif
73
74	extern struct dhcpOfferedAddr *leases;	extern struct dhcpOfferedAddr *leases;
75
76
#	Line 140  struct dhcpOfferedAddr {	Line 82  struct dhcpOfferedAddr {
82	uint32_t expires; /* host order */	uint32_t expires; /* host order */
83	};	};
84
85	extern uint8_t blank_chaddr[];	struct dhcpOfferedAddr *add_lease(const uint8_t *chaddr, uint32_t yiaddr, unsigned long lease) FAST_FUNC;
86		int lease_expired(struct dhcpOfferedAddr *lease) FAST_FUNC;
87	void clear_lease(uint8_t *chaddr, uint32_t yiaddr);	struct dhcpOfferedAddr *find_lease_by_chaddr(const uint8_t *chaddr) FAST_FUNC;
88	struct dhcpOfferedAddr *add_lease(uint8_t *chaddr, uint32_t yiaddr, unsigned long lease);	struct dhcpOfferedAddr *find_lease_by_yiaddr(uint32_t yiaddr) FAST_FUNC;
89	int lease_expired(struct dhcpOfferedAddr *lease);	uint32_t find_address(int check_expired) FAST_FUNC;
	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);
90
91
92	/*** static_leases.h ***/	/*** static_leases.h ***/
93
94	/* Config file will pass static lease info to this function which will add it	/* Config file will pass static lease info to this function which will add it
95	* to a data structure that can be searched later */	* to a data structure that can be searched later */
96	int addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t *ip);	int addStaticLease(struct static_lease **lease_struct, uint8_t *mac, uint32_t *ip) FAST_FUNC;
97	/* Check to see if a mac has an associated static lease */	/* Check to see if a mac has an associated static lease */
98	uint32_t getIpByMac(struct static_lease *lease_struct, void *arg);	uint32_t getIpByMac(struct static_lease *lease_struct, void *arg) FAST_FUNC;
99	/* Check to see if an ip is reserved as a static ip */	/* Check to see if an ip is reserved as a static ip */
100	uint32_t reservedIp(struct static_lease *lease_struct, uint32_t ip);	uint32_t reservedIp(struct static_lease *lease_struct, uint32_t ip) FAST_FUNC;
101	/* Print out static leases just to check what's going on (debug code) */	/* Print out static leases just to check what's going on (debug code) */
102	void printStaticLeases(struct static_lease **lease_struct);	void printStaticLeases(struct static_lease **lease_struct) FAST_FUNC;
103
104
105	/*** serverpacket.h ***/	/*** serverpacket.h ***/
106
107	int sendOffer(struct dhcpMessage *oldpacket);	int send_offer(struct dhcpMessage *oldpacket) FAST_FUNC;
108	int sendNAK(struct dhcpMessage *oldpacket);	int send_NAK(struct dhcpMessage *oldpacket) FAST_FUNC;
109	int sendACK(struct dhcpMessage *oldpacket, uint32_t yiaddr);	int send_ACK(struct dhcpMessage *oldpacket, uint32_t yiaddr) FAST_FUNC;
110	int send_inform(struct dhcpMessage *oldpacket);	int send_inform(struct dhcpMessage *oldpacket) FAST_FUNC;
111
112
113	/*** files.h ***/	/*** files.h ***/
114
115	struct config_keyword {	void read_config(const char *file) FAST_FUNC;
116	const char *keyword;	void write_leases(void) FAST_FUNC;
117	int (* const handler)(const char *line, void *var);	void read_leases(const char *file) FAST_FUNC;
118	void *var;	struct option_set *find_option(struct option_set *opt_list, uint8_t code) FAST_FUNC;
	const char *def;
	};
119
	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);
120
121		#if __GNUC_PREREQ(4,1)
122		# pragma GCC visibility pop
123		#endif
124
125	#endif	#endif

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