3267cc18e1
tcpdump -y ieee802_11 will work in the basic senses, including the code compilation for filters (where you may specify "link[]" to refer to parts of the 802.11 header, as well as treat it like a normal Ethernet header). Previously, it was just too far off to do anything useful for us. * While I'm here, fix some compile problems that will result from lex and yacc namespace polution when linking with -lpcap. The namespace is now "pcapyy*" instead of "yy*", and it tests fine with world and some external applications that may or may not use "yy*".
387 lines
9.1 KiB
Plaintext
387 lines
9.1 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 1.81 2001/09/14 01:40:57 fenner Exp $ (LBL)";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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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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/* Workaround for AIX 4.3 */
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#if !defined(AI_NUMERICHOST)
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#define AI_NUMERICHOST 0x04
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#endif
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#endif /*INET6*/
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#include "tokdefs.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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static YY_BUFFER_STATE in_buffer;
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#else
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static char *in_buffer;
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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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%}
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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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%n 2000
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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|tr 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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sctp return SCTP;
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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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vrrp return VRRP;
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ip6 {
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#ifdef INET6
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return IPV6;
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#else
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bpf_error("%s not supported", yytext);
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#endif
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}
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icmp6 {
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#ifdef INET6
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return ICMPV6;
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#else
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bpf_error("%s not supported", yytext);
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#endif
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}
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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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aarp return AARP;
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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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clnp return CLNP;
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stp return STP;
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ipx return IPX;
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netbeui return NETBEUI;
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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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vlan return VLAN;
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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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${B} { yylval.e = pcap_ether_aton(((char *)yytext)+1);
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return AID; }
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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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icmptype { yylval.i = 0; return NUM; }
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icmpcode { yylval.i = 1; return NUM; }
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icmp-echoreply { yylval.i = 0; return NUM; }
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icmp-unreach { yylval.i = 3; return NUM; }
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icmp-sourcequench { yylval.i = 4; return NUM; }
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icmp-redirect { yylval.i = 5; return NUM; }
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icmp-echo { yylval.i = 8; return NUM; }
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icmp-routeradvert { yylval.i = 9; return NUM; }
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icmp-routersolicit { yylval.i = 10; return NUM; }
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icmp-timxceed { yylval.i = 11; return NUM; }
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icmp-paramprob { yylval.i = 12; return NUM; }
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icmp-tstamp { yylval.i = 13; return NUM; }
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icmp-tstampreply { yylval.i = 14; return NUM; }
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icmp-ireq { yylval.i = 15; return NUM; }
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icmp-ireqreply { yylval.i = 16; return NUM; }
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icmp-maskreq { yylval.i = 17; return NUM; }
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icmp-maskreply { yylval.i = 18; return NUM; }
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tcpflags { yylval.i = 13; return NUM; }
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tcp-fin { yylval.i = 0x01; return NUM; }
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tcp-syn { yylval.i = 0x02; return NUM; }
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tcp-rst { yylval.i = 0x04; return NUM; }
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tcp-push { yylval.i = 0x08; return NUM; }
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tcp-ack { yylval.i = 0x10; return NUM; }
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tcp-urg { yylval.i = 0x20; return NUM; }
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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!<>()&|=]+ {
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bpf_error("illegal token: %s", 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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#ifdef FLEX_SCANNER
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in_buffer = yy_scan_string(buf);
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#else
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in_buffer = buf;
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#endif
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}
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/*
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* Do any cleanup necessary after parsing.
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*/
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void
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lex_cleanup()
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{
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#ifdef FLEX_SCANNER
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if (in_buffer != NULL)
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yy_delete_buffer(in_buffer);
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in_buffer = NULL;
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#endif
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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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