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PCAP Library with DECT support
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libpcap/scanner.l

464 lines
11 KiB

%{
/*
* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
* 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.
*/
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/libpcap/scanner.l,v 1.112 2008-02-06 10:21:30 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef WIN32
#include <pcap-stdinc.h>
#else /* WIN32 */
#if HAVE_INTTYPES_H
#include <inttypes.h>
#elif HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_SYS_BITYPES_H
#include <sys/bitypes.h>
#endif
#include <sys/types.h>
#endif /* WIN32 */
#include <ctype.h>
#include <string.h>
#include "pcap-int.h"
#include "gencode.h"
#ifdef INET6
#ifdef WIN32
#include <pcap-stdinc.h>
#ifdef __MINGW32__
#include "ip6_misc.h"
#endif
#else /* WIN32 */
#include <sys/socket.h> /* for "struct sockaddr" in "struct addrinfo" */
#include <netdb.h> /* for "struct addrinfo" */
#endif /* WIN32 */
/* Workaround for AIX 4.3 */
#if !defined(AI_NUMERICHOST)
#define AI_NUMERICHOST 0x04
#endif
#endif /*INET6*/
#include <pcap/namedb.h>
#include "tokdefs.h"
#ifdef HAVE_OS_PROTO_H
#include "os-proto.h"
#endif
static int stoi(char *);
static inline int xdtoi(int);
#ifdef FLEX_SCANNER
#define YY_NO_UNPUT
static YY_BUFFER_STATE in_buffer;
#else
static const char *in_buffer;
#undef getc
#define getc(fp) (*in_buffer == 0 ? EOF : *in_buffer++)
#endif
#define yylval pcap_lval
extern YYSTYPE yylval;
%}
N ([0-9]+|(0X|0x)[0-9A-Fa-f]+)
B ([0-9A-Fa-f][0-9A-Fa-f]?)
B2 ([0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f])
W ([0-9A-Fa-f][0-9A-Fa-f]?[0-9A-Fa-f]?[0-9A-Fa-f]?)
%a 18400
%o 21500
%e 7600
%k 4550
%p 27600
%n 2000
V680 {W}:{W}:{W}:{W}:{W}:{W}:{W}:{W}
V670 ::{W}:{W}:{W}:{W}:{W}:{W}:{W}
V671 {W}::{W}:{W}:{W}:{W}:{W}:{W}
V672 {W}:{W}::{W}:{W}:{W}:{W}:{W}
V673 {W}:{W}:{W}::{W}:{W}:{W}:{W}
V674 {W}:{W}:{W}:{W}::{W}:{W}:{W}
V675 {W}:{W}:{W}:{W}:{W}::{W}:{W}
V676 {W}:{W}:{W}:{W}:{W}:{W}::{W}
V677 {W}:{W}:{W}:{W}:{W}:{W}:{W}::
V660 ::{W}:{W}:{W}:{W}:{W}:{W}
V661 {W}::{W}:{W}:{W}:{W}:{W}
V662 {W}:{W}::{W}:{W}:{W}:{W}
V663 {W}:{W}:{W}::{W}:{W}:{W}
V664 {W}:{W}:{W}:{W}::{W}:{W}
V665 {W}:{W}:{W}:{W}:{W}::{W}
V666 {W}:{W}:{W}:{W}:{W}:{W}::
V650 ::{W}:{W}:{W}:{W}:{W}
V651 {W}::{W}:{W}:{W}:{W}
V652 {W}:{W}::{W}:{W}:{W}
V653 {W}:{W}:{W}::{W}:{W}
V654 {W}:{W}:{W}:{W}::{W}
V655 {W}:{W}:{W}:{W}:{W}::
V640 ::{W}:{W}:{W}:{W}
V641 {W}::{W}:{W}:{W}
V642 {W}:{W}::{W}:{W}
V643 {W}:{W}:{W}::{W}
V644 {W}:{W}:{W}:{W}::
V630 ::{W}:{W}:{W}
V631 {W}::{W}:{W}
V632 {W}:{W}::{W}
V633 {W}:{W}:{W}::
V620 ::{W}:{W}
V621 {W}::{W}
V622 {W}:{W}::
V610 ::{W}
V611 {W}::
V600 ::
V6604 {W}:{W}:{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
V6504 ::{W}:{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
V6514 {W}::{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
V6524 {W}:{W}::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
V6534 {W}:{W}:{W}::{W}:{W}:{N}\.{N}\.{N}\.{N}
V6544 {W}:{W}:{W}:{W}::{W}:{N}\.{N}\.{N}\.{N}
V6554 {W}:{W}:{W}:{W}:{W}::{N}\.{N}\.{N}\.{N}
V6404 ::{W}:{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
V6414 {W}::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
V6424 {W}:{W}::{W}:{W}:{N}\.{N}\.{N}\.{N}
V6434 {W}:{W}:{W}::{W}:{N}\.{N}\.{N}\.{N}
V6444 {W}:{W}:{W}:{W}::{N}\.{N}\.{N}\.{N}
V6304 ::{W}:{W}:{W}:{N}\.{N}\.{N}\.{N}
V6314 {W}::{W}:{W}:{N}\.{N}\.{N}\.{N}
V6324 {W}:{W}::{W}:{N}\.{N}\.{N}\.{N}
V6334 {W}:{W}:{W}::{N}\.{N}\.{N}\.{N}
V6204 ::{W}:{W}:{N}\.{N}\.{N}\.{N}
V6214 {W}::{W}:{N}\.{N}\.{N}\.{N}
V6224 {W}:{W}::{N}\.{N}\.{N}\.{N}
V6104 ::{W}:{N}\.{N}\.{N}\.{N}
V6114 {W}::{N}\.{N}\.{N}\.{N}
V6004 ::{N}\.{N}\.{N}\.{N}
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})
MAC ({B}:{B}:{B}:{B}:{B}:{B}|{B}\-{B}\-{B}\-{B}\-{B}\-{B}|{B}\.{B}\.{B}\.{B}\.{B}\.{B}|{B2}\.{B2}\.{B2}|{B2}{3})
%%
dst return DST;
src return SRC;
link|ether|ppp|slip return LINK;
fddi|tr|wlan return LINK;
arp return ARP;
rarp return RARP;
ip return IP;
sctp return SCTP;
tcp return TCP;
udp return UDP;
icmp return ICMP;
igmp return IGMP;
igrp return IGRP;
pim return PIM;
vrrp return VRRP;
radio return RADIO;
ip6 {
#ifdef INET6
return IPV6;
#else
bpf_error("%s not supported", yytext);
#endif
}
icmp6 {
#ifdef INET6
return ICMPV6;
#else
bpf_error("%s not supported", yytext);
#endif
}
ah return AH;
esp return ESP;
atalk return ATALK;
aarp return AARP;
decnet return DECNET;
lat return LAT;
sca return SCA;
moprc return MOPRC;
mopdl return MOPDL;
iso return ISO;
esis return ESIS;
es-is return ESIS;
isis return ISIS;
is-is return ISIS;
l1 return L1;
l2 return L2;
iih return IIH;
lsp return LSP;
snp return SNP;
csnp return CSNP;
psnp return PSNP;
clnp return CLNP;
stp return STP;
ipx return IPX;
netbeui return NETBEUI;
host return HOST;
net return NET;
mask return NETMASK;
port return PORT;
portrange return PORTRANGE;
proto return PROTO;
protochain {
#ifdef NO_PROTOCHAIN
bpf_error("%s not supported", yytext);
#else
return PROTOCHAIN;
#endif
}
gateway return GATEWAY;
type return TYPE;
subtype return SUBTYPE;
direction|dir return DIR;
address1|addr1 return ADDR1;
address2|addr2 return ADDR2;
address3|addr3 return ADDR3;
address4|addr4 return ADDR4;
ra return RA;
ta return TA;
less return LESS;
greater return GREATER;
byte return CBYTE;
broadcast return TK_BROADCAST;
multicast return TK_MULTICAST;
and|"&&" return AND;
or|"||" return OR;
not return '!';
len|length return LEN;
inbound return INBOUND;
outbound return OUTBOUND;
vlan return VLAN;
mpls return MPLS;
pppoed return PPPOED;
pppoes return PPPOES;
lane return LANE;
llc return LLC;
metac return METAC;
bcc return BCC;
oam return OAM;
oamf4 return OAMF4;
oamf4ec return OAMF4EC;
oamf4sc return OAMF4SC;
sc return SC;
ilmic return ILMIC;
vpi return VPI;
vci return VCI;
connectmsg return CONNECTMSG;
metaconnect return METACONNECT;
on|ifname return PF_IFNAME;
rset|ruleset return PF_RSET;
rnr|rulenum return PF_RNR;
srnr|subrulenum return PF_SRNR;
reason return PF_REASON;
action return PF_ACTION;
fisu return FISU;
lssu return LSSU;
lsu return LSSU;
msu return MSU;
sio return SIO;
opc return OPC;
dpc return DPC;
sls return SLS;
[ \r\n\t] ;
[+\-*/:\[\]!<>()&|=] return yytext[0];
">=" return GEQ;
"<=" return LEQ;
"!=" return NEQ;
"==" return '=';
"<<" return LSH;
">>" return RSH;
${B} { yylval.e = pcap_ether_aton(((char *)yytext)+1);
return AID; }
{MAC} { yylval.e = pcap_ether_aton((char *)yytext);
return EID; }
{N} { yylval.i = stoi((char *)yytext); return NUM; }
({N}\.{N})|({N}\.{N}\.{N})|({N}\.{N}\.{N}\.{N}) {
yylval.s = sdup((char *)yytext); return HID; }
{V6} {
#ifdef INET6
struct addrinfo hints, *res;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET6;
hints.ai_flags = AI_NUMERICHOST;
if (getaddrinfo(yytext, NULL, &hints, &res))
bpf_error("bogus IPv6 address %s", yytext);
else {
freeaddrinfo(res);
yylval.s = sdup((char *)yytext); return HID6;
}
#else
bpf_error("IPv6 address %s not supported", yytext);
#endif /*INET6*/
}
{B}:+({B}:+)+ { bpf_error("bogus ethernet address %s", yytext); }
icmptype { yylval.i = 0; return NUM; }
icmpcode { yylval.i = 1; return NUM; }
icmp-echoreply { yylval.i = 0; return NUM; }
icmp-unreach { yylval.i = 3; return NUM; }
icmp-sourcequench { yylval.i = 4; return NUM; }
icmp-redirect { yylval.i = 5; return NUM; }
icmp-echo { yylval.i = 8; return NUM; }
icmp-routeradvert { yylval.i = 9; return NUM; }
icmp-routersolicit { yylval.i = 10; return NUM; }
icmp-timxceed { yylval.i = 11; return NUM; }
icmp-paramprob { yylval.i = 12; return NUM; }
icmp-tstamp { yylval.i = 13; return NUM; }
icmp-tstampreply { yylval.i = 14; return NUM; }
icmp-ireq { yylval.i = 15; return NUM; }
icmp-ireqreply { yylval.i = 16; return NUM; }
icmp-maskreq { yylval.i = 17; return NUM; }
icmp-maskreply { yylval.i = 18; return NUM; }
tcpflags { yylval.i = 13; return NUM; }
tcp-fin { yylval.i = 0x01; return NUM; }
tcp-syn { yylval.i = 0x02; return NUM; }
tcp-rst { yylval.i = 0x04; return NUM; }
tcp-push { yylval.i = 0x08; return NUM; }
tcp-ack { yylval.i = 0x10; return NUM; }
tcp-urg { yylval.i = 0x20; return NUM; }
[A-Za-z0-9]([-_.A-Za-z0-9]*[.A-Za-z0-9])? {
yylval.s = sdup((char *)yytext); return ID; }
"\\"[^ !()\n\t]+ { yylval.s = sdup((char *)yytext + 1); return ID; }
[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+ {
bpf_error("illegal token: %s", yytext); }
. { bpf_error("illegal char '%c'", *yytext); }
%%
void
lex_init(buf)
const char *buf;
{
#ifdef FLEX_SCANNER
in_buffer = yy_scan_string(buf);
#else
in_buffer = buf;
#endif
}
/*
* Do any cleanup necessary after parsing.
*/
void
lex_cleanup()
{
#ifdef FLEX_SCANNER
if (in_buffer != NULL)
yy_delete_buffer(in_buffer);
in_buffer = NULL;
#endif
}
/*
* Also define a yywrap. Note that if we're using flex, it will
* define a macro to map this identifier to pcap_wrap.
*/
int
yywrap()
{
return 1;
}
/* Hex digit to integer. */
static inline int
xdtoi(c)
register int c;
{
if (isdigit(c))
return c - '0';
else if (islower(c))
return c - 'a' + 10;
else
return c - 'A' + 10;
}
/*
* Convert string to integer. Just like atoi(), but checks for
* preceding 0x or 0 and uses hex or octal instead of decimal.
*/
static int
stoi(s)
char *s;
{
int base = 10;
int n = 0;
if (*s == '0') {
if (s[1] == 'x' || s[1] == 'X') {
s += 2;
base = 16;
}
else {
base = 8;
s += 1;
}
}
while (*s)
n = n * base + xdtoi(*s++);
return n;
}