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