1 87a52e04 2005-12-26 devnull typedef struct Field Field;
  2 87a52e04 2005-12-26 devnull typedef struct Filter Filter;
  3 87a52e04 2005-12-26 devnull typedef struct Msg Msg;
  4 87a52e04 2005-12-26 devnull typedef struct Mux Mux;
  5 87a52e04 2005-12-26 devnull typedef struct Proto Proto;
  6 87a52e04 2005-12-26 devnull 
  7 87a52e04 2005-12-26 devnull #define NetS(x) ((((uchar*)x)[0]<<8) | ((uchar*)x)[1])
  8 87a52e04 2005-12-26 devnull #define Net3(x) ((((uchar*)x)[0]<<16) | (((uchar*)x)[1]<<8) | ((uchar*)x)[2])
  9 87a52e04 2005-12-26 devnull #define NetL(x) ((((uchar*)x)[0]<<24) | (((uchar*)x)[1]<<16) | (((uchar*)x)[2]<<8) | ((uchar*)x)[3])
 10 87a52e04 2005-12-26 devnull 
 11 87a52e04 2005-12-26 devnull /*
 12 87a52e04 2005-12-26 devnull  *  one per protocol module
 13 87a52e04 2005-12-26 devnull  */
 14 87a52e04 2005-12-26 devnull struct Proto
 15 87a52e04 2005-12-26 devnull {
 16 87a52e04 2005-12-26 devnull 	char*	name;
 17 87a52e04 2005-12-26 devnull 	void	(*compile)(Filter*);
 18 87a52e04 2005-12-26 devnull 	int	(*filter)(Filter*, Msg*);
 19 87a52e04 2005-12-26 devnull 	int	(*seprint)(Msg*);
 20 87a52e04 2005-12-26 devnull 	Mux*	mux;
 21 a38a1836 2006-02-14 devnull 	char*	valfmt;
 22 87a52e04 2005-12-26 devnull 	Field*	field;
 23 87a52e04 2005-12-26 devnull 	int	(*framer)(int, uchar*, int);
 24 87a52e04 2005-12-26 devnull };
 25 87a52e04 2005-12-26 devnull extern Proto *protos[];
 26 87a52e04 2005-12-26 devnull 
 27 87a52e04 2005-12-26 devnull /*
 28 87a52e04 2005-12-26 devnull  *  one per protocol module, pointed to by Proto.mux
 29 87a52e04 2005-12-26 devnull  */
 30 87a52e04 2005-12-26 devnull struct Mux
 31 87a52e04 2005-12-26 devnull {
 32 87a52e04 2005-12-26 devnull 	char*	name;
 33 87a52e04 2005-12-26 devnull 	ulong	val;
 34 87a52e04 2005-12-26 devnull 	Proto*	pr;
 35 87a52e04 2005-12-26 devnull };
 36 87a52e04 2005-12-26 devnull 
 37 87a52e04 2005-12-26 devnull /*
 38 87a52e04 2005-12-26 devnull  *  a field defining a comparison filter
 39 87a52e04 2005-12-26 devnull  */
 40 87a52e04 2005-12-26 devnull struct Field
 41 87a52e04 2005-12-26 devnull {
 42 87a52e04 2005-12-26 devnull 	char*	name;
 43 87a52e04 2005-12-26 devnull 	int	ftype;
 44 87a52e04 2005-12-26 devnull 	int	subop;
 45 87a52e04 2005-12-26 devnull 	char*	help;
 46 87a52e04 2005-12-26 devnull };
 47 87a52e04 2005-12-26 devnull 
 48 87a52e04 2005-12-26 devnull /*
 49 87a52e04 2005-12-26 devnull  *  the status of the current message walk
 50 87a52e04 2005-12-26 devnull  */
 51 87a52e04 2005-12-26 devnull struct Msg
 52 87a52e04 2005-12-26 devnull {
 53 87a52e04 2005-12-26 devnull 	uchar	*ps;	/* packet ptr */
 54 87a52e04 2005-12-26 devnull 	uchar	*pe;	/* packet end */
 55 87a52e04 2005-12-26 devnull 
 56 87a52e04 2005-12-26 devnull 	char	*p;	/* buffer start */
 57 87a52e04 2005-12-26 devnull 	char	*e;	/* buffer end */
 58 87a52e04 2005-12-26 devnull 
 59 87a52e04 2005-12-26 devnull 	int	needroot;	/* pr is root, need to see in expression */
 60 87a52e04 2005-12-26 devnull 	Proto	*pr;	/* current/next protocol */	
 61 87a52e04 2005-12-26 devnull };
 62 87a52e04 2005-12-26 devnull 
 63 87a52e04 2005-12-26 devnull enum
 64 87a52e04 2005-12-26 devnull {
 65 87a52e04 2005-12-26 devnull 	Fnum,		/* just a number */
 66 87a52e04 2005-12-26 devnull 	Fether,		/* ethernet address */
 67 87a52e04 2005-12-26 devnull 	Fv4ip,		/* v4 ip address */
 68 87a52e04 2005-12-26 devnull 	Fv6ip,		/* v6 ip address */
 69 87a52e04 2005-12-26 devnull 	Fba,		/* byte array */
 70 87a52e04 2005-12-26 devnull };
 71 87a52e04 2005-12-26 devnull 
 72 87a52e04 2005-12-26 devnull /*
 73 87a52e04 2005-12-26 devnull  *  a node in the filter tree
 74 87a52e04 2005-12-26 devnull  */
 75 87a52e04 2005-12-26 devnull struct Filter {
 76 87a52e04 2005-12-26 devnull 	int	op;	/* token type */
 77 87a52e04 2005-12-26 devnull 	char	*s;	/* string */
 78 87a52e04 2005-12-26 devnull 	Filter	*l;
 79 87a52e04 2005-12-26 devnull 	Filter	*r;
 80 87a52e04 2005-12-26 devnull 
 81 87a52e04 2005-12-26 devnull 	Proto	*pr;	/* next protocol;
 82 87a52e04 2005-12-26 devnull 
 83 87a52e04 2005-12-26 devnull 	/* protocol specific */
 84 87a52e04 2005-12-26 devnull 	int	subop;
 85 87a52e04 2005-12-26 devnull 	ulong	param;
 86 87a52e04 2005-12-26 devnull 	union {
 87 87a52e04 2005-12-26 devnull 		ulong	ulv;
 88 87a52e04 2005-12-26 devnull 		vlong	vlv;
 89 87a52e04 2005-12-26 devnull 		uchar	a[32];
 90 87a52e04 2005-12-26 devnull 	};
 91 87a52e04 2005-12-26 devnull };
 92 87a52e04 2005-12-26 devnull 
 93 87a52e04 2005-12-26 devnull extern void	yyinit(char*);
 94 87a52e04 2005-12-26 devnull extern int	yyparse(void);
 95 87a52e04 2005-12-26 devnull extern Filter*	newfilter(void);
 96 87a52e04 2005-12-26 devnull extern void	compile_cmp(char*, Filter*, Field*);
 97 87a52e04 2005-12-26 devnull extern void	demux(Mux*, ulong, ulong, Msg*, Proto*);
 98 87a52e04 2005-12-26 devnull extern int	defaultframer(int, uchar*, int);
 99 87a52e04 2005-12-26 devnull extern int	opendevice(char*, int);
100 87a52e04 2005-12-26 devnull 
101 87a52e04 2005-12-26 devnull extern int Nflag;
102 87a52e04 2005-12-26 devnull extern int dflag;
103 87a52e04 2005-12-26 devnull extern int Cflag;
104 87a52e04 2005-12-26 devnull 
105 87a52e04 2005-12-26 devnull typedef Filter *Filterptr;
106 87a52e04 2005-12-26 devnull #define YYSTYPE Filterptr
107 87a52e04 2005-12-26 devnull extern Filter *filter;