dceab8ea63
scanner/parser. FreeBSD recently made 'flex' its default implementation of 'lex'. One of the incompatibilities of 'flex' vs. 'lex' is that if you longjmp() out of the scanner, you must call yyrestart() before doing another scan (as documented in flex(1)). So add an invocation to yyrestart() in lex_init(). This change should be backwards compatible with the original 'lex'. PR: bin/24116
329 lines
7.6 KiB
Plaintext
329 lines
7.6 KiB
Plaintext
%{
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/*
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
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* The Regents of the University of California. 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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*
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* $FreeBSD$
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*/
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#ifndef lint
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static const char rcsid[] =
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"@(#) $Header: /tcpdump/master/libpcap/scanner.l,v 1.60 1999/11/17 04:09:58 assar Exp $ (LBL)";
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#endif
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#include <sys/types.h>
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#include <sys/time.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <string.h>
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#include "pcap-int.h"
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#include "gencode.h"
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#include <pcap-namedb.h>
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#ifdef INET6
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#include <netdb.h>
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#include <sys/socket.h>
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#endif /*INET6*/
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#include "tokdefs.h"
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#include "gnuc.h"
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#ifdef HAVE_OS_PROTO_H
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#include "os-proto.h"
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#endif
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static int stoi(char *);
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static inline int xdtoi(int);
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#ifdef FLEX_SCANNER
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#define YY_NO_UNPUT
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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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#define yylval pcap_lval
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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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W ([0-9A-Fa-f][0-9A-Fa-f]?[0-9A-Fa-f]?[0-9A-Fa-f]?)
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%a 15000
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%o 17000
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%e 6000
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%k 4000
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%p 19000
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V680 {W}:{W}:{W}:{W}:{W}:{W}:{W}:{W}
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V670 ::{W}:{W}:{W}:{W}:{W}:{W}:{W}
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V671 {W}::{W}:{W}:{W}:{W}:{W}:{W}
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V672 {W}:{W}::{W}:{W}:{W}:{W}:{W}
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V673 {W}:{W}:{W}::{W}:{W}:{W}:{W}
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V674 {W}:{W}:{W}:{W}::{W}:{W}:{W}
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V675 {W}:{W}:{W}:{W}:{W}::{W}:{W}
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V676 {W}:{W}:{W}:{W}:{W}:{W}::{W}
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V677 {W}:{W}:{W}:{W}:{W}:{W}:{W}::
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V660 ::{W}:{W}:{W}:{W}:{W}:{W}
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V661 {W}::{W}:{W}:{W}:{W}:{W}
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V662 {W}:{W}::{W}:{W}:{W}:{W}
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V663 {W}:{W}:{W}::{W}:{W}:{W}
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V664 {W}:{W}:{W}:{W}::{W}:{W}
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V665 {W}:{W}:{W}:{W}:{W}::{W}
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V666 {W}:{W}:{W}:{W}:{W}:{W}::
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V650 ::{W}:{W}:{W}:{W}:{W}
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V651 {W}::{W}:{W}:{W}:{W}
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V652 {W}:{W}::{W}:{W}:{W}
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V653 {W}:{W}:{W}::{W}:{W}
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V654 {W}:{W}:{W}:{W}::{W}
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V655 {W}:{W}:{W}:{W}:{W}::
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V640 ::{W}:{W}:{W}:{W}
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V641 {W}::{W}:{W}:{W}
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V642 {W}:{W}::{W}:{W}
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V643 {W}:{W}:{W}::{W}
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V644 {W}:{W}:{W}:{W}::
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V630 ::{W}:{W}:{W}
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V631 {W}::{W}:{W}
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V632 {W}:{W}::{W}
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V633 {W}:{W}:{W}::
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V620 ::{W}:{W}
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V621 {W}::{W}
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V622 {W}:{W}::
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V610 ::{W}
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V611 {W}::
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V600 ::
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V6604 {W}:{W}:{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6504 ::{W}:{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6514 {W}::{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6524 {W}:{W}::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6534 {W}:{W}:{W}::{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6544 {W}:{W}:{W}:{W}::{W}:{N}\.{N}\.{N}\.{N}
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V6554 {W}:{W}:{W}:{W}:{W}::{N}\.{N}\.{N}\.{N}
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V6404 ::{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6414 {W}::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6424 {W}:{W}::{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6434 {W}:{W}:{W}::{W}:{N}\.{N}\.{N}\.{N}
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V6444 {W}:{W}:{W}:{W}::{N}\.{N}\.{N}\.{N}
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V6304 ::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6314 {W}::{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6324 {W}:{W}::{W}:{N}\.{N}\.{N}\.{N}
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V6334 {W}:{W}:{W}::{N}\.{N}\.{N}\.{N}
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V6204 ::{W}:{W}:{N}\.{N}\.{N}\.{N}
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V6214 {W}::{W}:{N}\.{N}\.{N}\.{N}
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V6224 {W}:{W}::{N}\.{N}\.{N}\.{N}
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V6104 ::{W}:{N}\.{N}\.{N}\.{N}
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V6114 {W}::{N}\.{N}\.{N}\.{N}
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V6004 ::{N}\.{N}\.{N}\.{N}
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V6 ({V680}|{V670}|{V671}|{V672}|{V673}|{V674}|{V675}|{V676}|{V677}|{V660}|{V661}|{V662}|{V663}|{V664}|{V665}|{V666}|{V650}|{V651}|{V652}|{V653}|{V654}|{V655}|{V640}|{V641}|{V642}|{V643}|{V644}|{V630}|{V631}|{V632}|{V633}|{V620}|{V621}|{V622}|{V610}|{V611}|{V600}|{V6604}|{V6504}|{V6514}|{V6524}|{V6534}|{V6544}|{V6554}|{V6404}|{V6414}|{V6424}|{V6434}|{V6444}|{V6304}|{V6314}|{V6324}|{V6334}|{V6204}|{V6214}|{V6224}|{V6104}|{V6114}|{V6004})
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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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fddi 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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igmp return IGMP;
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igrp return IGRP;
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pim return PIM;
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ip6 return IPV6;
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icmp6 return ICMPV6;
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ah return AH;
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esp return ESP;
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atalk return ATALK;
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decnet return DECNET;
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lat return LAT;
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sca return SCA;
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moprc return MOPRC;
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mopdl return MOPDL;
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iso return ISO;
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esis return ESIS;
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es-is return ESIS;
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isis return ISIS;
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is-is return ISIS;
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host return HOST;
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net return NET;
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mask return MASK;
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port return PORT;
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proto return PROTO;
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protochain {
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#ifdef NO_PROTOCHAIN
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bpf_error("%s not supported", yytext);
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#else
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return PROTOCHAIN;
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#endif
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}
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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|length return LEN;
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inbound return INBOUND;
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outbound return OUTBOUND;
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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((char *)yytext); return NUM; }
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({N}\.{N})|({N}\.{N}\.{N})|({N}\.{N}\.{N}\.{N}) {
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yylval.s = sdup((char *)yytext); return HID; }
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{B}:{B}:{B}:{B}:{B}:{B} { yylval.e = pcap_ether_aton((char *)yytext);
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return EID; }
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{V6} {
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#ifdef INET6
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struct addrinfo hints, *res;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_INET6;
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hints.ai_flags = AI_NUMERICHOST;
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if (getaddrinfo(yytext, NULL, &hints, &res))
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bpf_error("bogus IPv6 address %s", yytext);
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else {
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yylval.e = sdup((char *)yytext); return HID6;
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}
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#else
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bpf_error("IPv6 address %s not supported", yytext);
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#endif /*INET6*/
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}
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{B}:+({B}:+)+ { bpf_error("bogus ethernet address %s", yytext); }
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[A-Za-z0-9][-_.A-Za-z0-9]*[.A-Za-z0-9] {
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yylval.s = sdup((char *)yytext); return ID; }
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"\\"[^ !()\n\t]+ { yylval.s = sdup((char *)yytext + 1); return ID; }
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[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+i {
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bpf_error("illegal token: %s\n", yytext); }
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. { bpf_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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yyrestart(NULL);
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}
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/*
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* Also define a yywrap. Note that if we're using flex, it will
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* define a macro to map this identifier to pcap_wrap.
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*/
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int
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yywrap()
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{
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return 1;
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}
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/* Hex digit to integer. */
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static inline int
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xdtoi(c)
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register int c;
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{
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if (isdigit(c))
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return c - '0';
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else if (islower(c))
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return c - 'a' + 10;
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else
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return c - 'A' + 10;
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}
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/*
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* Convert string to integer. Just like atoi(), but checks for
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* preceding 0x or 0 and uses hex or octal instead of decimal.
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*/
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static int
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stoi(s)
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char *s;
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{
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int base = 10;
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int n = 0;
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if (*s == '0') {
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if (s[1] == 'x' || s[1] == 'X') {
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s += 2;
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base = 16;
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}
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else {
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base = 8;
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s += 1;
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}
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}
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while (*s)
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n = n * base + xdtoi(*s++);
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return n;
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}
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