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#include <u.h>
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#include <libc.h>
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#include <auth.h>
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#include <fcall.h>
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#include <bio.h>
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enum {
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	MAXRPC = 8192,
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	Qroot = 1,		/* fixed QID's */
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	Qallow,
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	Qdelay,
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	Qblock,
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	Qdial,
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	Qdeny,
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	Qtrusted,
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	Qctl,
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	Qdummy,
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	Qaddr,			/* Qid's for "ip" & "account" subdirs (Qaddr-99) */
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	Qtrustedfile = 100,	/* Qid's for trusted files (100-999)*/
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	Qaddrfile   = 1000,	/* Qid's for address files (> 1000) */
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				/* type codes in node.d.type */
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	Directory =	0,	/* normal directory */
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	Addrdir,		/* contains "ip" and "account" directories */
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	IPaddr,			/* contains IP address "files" */
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	Acctaddr,		/* contains Account address "files" */
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	Trusted,		/* contains trusted IP files */
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	Trustedperm,		/* permanently trusted IP pseudo-file */
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	Trustedtemp,		/* temporarily trusted IP pseudo-file */
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	Ctlfile,		/* ctl file under root */
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	Dummynode,		/* place holder for Address pseudo-files */
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};
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typedef struct Fid	Fid;
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typedef struct Node	Node;
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typedef	struct Address	Address;
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typedef struct Cidraddr	Cidraddr;
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typedef struct Keyword	Keyword;
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	/* an active fid */
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struct Fid
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{
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	int	fid;
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	int	dirindex;
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	Node	*node;		/* current position in path */
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	int	busy;
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	int	open;		/* directories only */
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	char	*name;
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	char *uid;
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	Fid	*next;
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};
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struct	Cidraddr
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{
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	ulong	ipaddr;		/* CIDR base addr */
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	ulong	mask;		/* CIDR mask */
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};
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	/* an address is either an account name (domain!user) or Ip address */
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struct	Address
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{
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	char	*name;		/* from the control file */
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	Cidraddr ip;		/* CIDR Address */
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};
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/* Fids point to either a directory or pseudo-file */
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struct Node
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{
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	Dir	d;		/* d.name, d.uid, d.gid, d.muid are atoms */
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	int	count;
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	int	allocated;	/* number of Address structs allocated */
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	ulong	baseqid;	/* base of Qid's in this set */
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	Node	*parent;	/* points to self in root node*/
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	Node	*sibs;		/* 0 in Ipaddr and Acctaddr dirs */
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	union {
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		Node	*children;	/* type == Directory || Addrdir || Trusted */
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		Address	*addrs;		/* type == Ipaddr || Acctaddr */
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		Cidraddr ip;		/* type == Trustedfile */
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	};
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};
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struct Keyword {
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	char	*name;
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	int	code;
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};
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Node	*root;			/* root of directory tree */
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Node	dummy;			/* dummy node for fid's pointing to an Address */
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int	srvfd;			/* fd for 9fs */
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uchar rbuf[IOHDRSZ+MAXRPC+1];
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int	debugfd;
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char	*ctlfile;
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char	*conffile;
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long	lastconftime;
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long	lastctltime;
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int	trustedqid;
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char*	atom(char*);
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void	cidrparse(Cidraddr*, char*);
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void	cleantrusted(void);
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Node*	dirwalk(char*, Node*);
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int	dread(Fid*, int);
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void	fatal(char*, ...);
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Node*	finddir(int);
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int	findkey(char*, Keyword*);
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void	getconf(void);
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int	hread(Fid*, int);
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void	io(void);
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Node*	newnode(Node*, char*, ushort, int, ulong);
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void	printfid(Fid*);
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void	printnode(Node*);
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void	printtree(Node*);
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void	reload(void);
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char*	subslash(char*);
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char*	walk(char*, Fid*);
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