NetBSD/usr.sbin/tcpdump/tcplex.l

148 lines
3.6 KiB
Plaintext

%{
/*
* Copyright (c) 1988-1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* $Id: tcplex.l,v 1.1 1993/11/14 21:21:10 deraadt Exp $
*/
#ifndef lint
static char rcsid[] =
"@(#) Header: tcplex.l,v 1.26 92/02/14 15:16:35 mccanne Exp (LBL)";
#endif
/*
* Compiling with gcc under SunOS will cause problems unless we have this
* cruft here. The flex skeleton includes stddef.h which defines these types
* (under gcc). They will conflict with Sun's definitions in sys/types.h.
*/
#define size_t xxxsize_t
#define ptrdiff_t xxxptrdiff_t
#define wchar_t xxxwchar_t
#include <sys/types.h>
#undef size_t
#undef ptrdiff_t
#undef wchar_t
#include "nametoaddr.h"
/*
* We need bpf since enum bpf_code is in YYSTYPE.
*/
#include <sys/time.h>
#include <net/bpf.h>
#include "gencode.h"
#include "y.tab.h"
#ifdef FLEX_SCANNER
#undef YY_INPUT
#define YY_INPUT(buf, result, max)\
{\
char *src = in_buffer;\
int i;\
\
if (*src == 0)\
result = YY_NULL;\
else {\
for (i = 0; *src && i < max; ++i)\
buf[i] = *src++;\
in_buffer += i;\
result = i;\
}\
}
#else
#undef getc
#define getc(fp) (*in_buffer == 0 ? EOF : *in_buffer++)
#endif
extern YYSTYPE yylval;
static char *in_buffer;
%}
N ([0-9]+|(0X|0x)[0-9A-Fa-f]+)
B ([0-9A-Fa-f][0-9A-Fa-f]?)
%a 3000
%%
dst return DST;
src return SRC;
link|ether|ppp|slip return LINK;
arp return ARP;
rarp return RARP;
ip return IP;
tcp return TCP;
udp return UDP;
icmp return ICMP;
host return HOST;
net return NET;
port return PORT;
proto return PROTO;
gateway return GATEWAY;
less return LESS;
greater return GREATER;
byte return BYTE;
broadcast return TK_BROADCAST;
multicast return TK_MULTICAST;
and return AND;
or return OR;
not return '!';
len return LEN;
[ \n\t] ;
[+\-*/:\[\]!<>()&|=] return yytext[0];
">=" return GEQ;
"<=" return LEQ;
"!=" return NEQ;
"==" return '=';
"<<" return LSH;
">>" return RSH;
{N} { yylval.i = stoi(yytext); return NUM; }
({N}\.{N})|({N}\.{N}\.{N})|({N}\.{N}\.{N}\.{N}) {
yylval.h = atoin(yytext); return HID;
}
{B}:{B}:{B}:{B}:{B}:{B} { yylval.e = ETHER_aton(yytext); return EID; }
{B}:+({B}:+)+ { error("bogus ethernet address %s", yytext); }
[A-Za-z][-_.A-Za-z0-9]* { yylval.s = yytext; return ID; }
"\\"[^ !()\n\t]+ { yylval.s = yytext + 1; return ID; }
[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+ { error("illegal token: %s\n", yytext); }
. { error("illegal char '%c'", *yytext); }
%%
void
lex_init(buf)
char *buf;
{
in_buffer = buf;
}
#ifndef FLEX_SCANNER
int
yywrap()
/* so we don't need -ll */
{
return 1;
}
#endif