/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include "../dhcp.h" enum{	Maxstr=	256,}; typedef struct Binding Binding;struct Binding{	Binding *next;	uchar	ip[IPaddrlen]; 	char	*boundto;	/* id last bound to */	char	*offeredto;	/* id we've offered this to */ 	long	lease;		/* absolute time at which binding expires */	long	expoffer;	/* absolute time at which offer times out */	long	offer;		/* lease offered */	long	lasttouched;	/* time this entry last assigned/unassigned */	long	lastcomplained;	/* last time we complained about a used but not leased */	long	tried;		/* last time we tried this entry */ 	Qid	q;		/* qid at the last syncbinding */}; typedef struct Info	Info;struct Info{	int	indb;			/* true if found in database */	char	domain[Maxstr];	/* system domain name */	char	bootf[Maxstr];		/* boot file */	char	bootf2[Maxstr];	/* alternative boot file */	uchar	tftp[NDB_IPlen];	/* ip addr of tftp server */	uchar	tftp2[NDB_IPlen];	/* ip addr of alternate server */	uchar	ipaddr[NDB_IPlen];	/* ip address of system */	uchar	ipmask[NDB_IPlen];	/* ip network mask */	uchar	ipnet[NDB_IPlen];	/* ip network address (ipaddr & ipmask) */	uchar	etheraddr[6];		/* ethernet address */	uchar	gwip[NDB_IPlen];	/* gateway ip address */	uchar	fsip[NDB_IPlen];	/* file system ip address */	uchar	auip[NDB_IPlen];	/* authentication server ip address */	char	rootpath[Maxstr];	/* rootfs for diskless nfs clients */	char	dhcpgroup[Maxstr];	char	vendor[Maxstr];	/* vendor info */};  /* from dhcp.c */extern int	validip(uchar*);extern void	warning(int, char*, ...);extern int	minlease; /* from db.c */extern char*	tohex(char*, uchar*, int);extern char*	toid(uchar*, int);extern void	initbinding(uchar*, int);extern Binding*	iptobinding(uchar*, int);extern Binding*	idtobinding(char*, Info*, int);extern Binding*	idtooffer(char*, Info*);extern int	commitbinding(Binding*);extern int	releasebinding(Binding*, char*);extern int	samenet(uchar *ip, Info *iip);extern void	mkoffer(Binding*, char*, long);extern int	syncbinding(Binding*, int); /* from ndb.c */extern int	lookup(Bootp*, Info*, Info*);extern int	lookupip(uchar*, Info*, int);extern void	lookupname(char*, Ndbtuple*);extern Iplifc*	findlifc(uchar*);extern int	forme(uchar*);extern int	lookupserver(char*, uchar**, Ndbtuple *t);extern Ndbtuple* lookupinfo(uchar *ipaddr, char **attr, int n); /* from icmp.c */extern int	icmpecho(uchar*); extern char	*binddir;extern int	debug;extern char	*blog;extern Ipifc	*ipifcs;extern long	now;extern char	*ndbfile;