534 lines
15 KiB
Plaintext
534 lines
15 KiB
Plaintext
%top {
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/* Must come first for _LARGE_FILE_API on AIX. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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/*
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* Must come first to avoid warnings on Windows.
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*
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* Flex-generated scanners may only include <inttypes.h> if __STDC_VERSION__
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* is defined with a value >= 199901, meaning "full C99", and MSVC may not
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* define it with that value, because it isn't 100% C99-compliant, even
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* though it has an <inttypes.h> capable of defining everything the Flex
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* scanner needs.
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*
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* We, however, will include it if we know we have an MSVC version that has
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* it; this means that we may define the INTn_MAX and UINTn_MAX values in
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* scanner.c, and then include <stdint.h>, which may define them differently
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* (same value, but different string of characters), causing compiler warnings.
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*
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* If we include it here, and they're defined, that'll prevent scanner.c
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* from defining them. So we include <pcap/pcap-inttypes.h>, to get
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* <inttypes.h> if we have it.
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*/
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#include <pcap/pcap-inttypes.h>
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#include "diag-control.h"
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}
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/*
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* We want a reentrant scanner.
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*/
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%option reentrant
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/*
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* And we need to pass the compiler state to the scanner.
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*/
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%option extra-type="compiler_state_t *"
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/*
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* We don't use input, so don't generate code for it.
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*/
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%option noinput
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/*
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* We don't use unput, so don't generate code for it.
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*/
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%option nounput
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/*
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* We don't read from the terminal.
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*/
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%option never-interactive
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/*
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* We want to stop processing when we get to the end of the input.
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*/
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%option noyywrap
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/*
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* We want to generate code that can be used by a reentrant parser
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* generated by Bison or Berkeley YACC.
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*/
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%option bison-bridge
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%{
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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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#include <ctype.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 "grammar.h"
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/*
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* Earlier versions of Flex don't declare these, so we declare them
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* ourselves to squelch warnings.
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*/
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int pcap_get_column(yyscan_t);
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void pcap_set_column(int, yyscan_t);
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#ifdef INET6
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#ifdef _WIN32
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#include <winsock2.h>
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#include <ws2tcpip.h>
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/*
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* To quote the MSDN page for getaddrinfo() at
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*
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* https://msdn.microsoft.com/en-us/library/windows/desktop/ms738520(v=vs.85).aspx
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*
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* "Support for getaddrinfo on Windows 2000 and older versions
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* The getaddrinfo function was added to the Ws2_32.dll on Windows XP and
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* later. To execute an application that uses this function on earlier
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* versions of Windows, then you need to include the Ws2tcpip.h and
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* Wspiapi.h files. When the Wspiapi.h include file is added, the
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* getaddrinfo function is defined to the WspiapiGetAddrInfo inline
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* function in the Wspiapi.h file. At runtime, the WspiapiGetAddrInfo
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* function is implemented in such a way that if the Ws2_32.dll or the
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* Wship6.dll (the file containing getaddrinfo in the IPv6 Technology
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* Preview for Windows 2000) does not include getaddrinfo, then a
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* version of getaddrinfo is implemented inline based on code in the
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* Wspiapi.h header file. This inline code will be used on older Windows
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* platforms that do not natively support the getaddrinfo function."
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*
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* We use getaddrinfo(), so we include Wspiapi.h here.
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*/
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#include <wspiapi.h>
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#else /* _WIN32 */
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#include <sys/socket.h> /* for "struct sockaddr" in "struct addrinfo" */
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#include <netdb.h> /* for "struct addrinfo" */
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#endif /* _WIN32 */
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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 <pcap/namedb.h>
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#include "grammar.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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/*
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* Disable diagnostics in the code generated by Flex.
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*/
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DIAG_OFF_FLEX
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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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B2 ([0-9A-Fa-f][0-9A-Fa-f][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 18400
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%o 21500
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%e 7600
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%k 4550
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%p 27600
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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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MAC ({B}:{B}:{B}:{B}:{B}:{B}|{B}\-{B}\-{B}\-{B}\-{B}\-{B}|{B}\.{B}\.{B}\.{B}\.{B}\.{B}|{B2}\.{B2}\.{B2}|{B2}{3})
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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|wlan 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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carp return CARP;
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radio return RADIO;
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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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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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l1 return L1;
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l2 return L2;
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iih return IIH;
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lsp return LSP;
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snp return SNP;
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csnp return CSNP;
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psnp return PSNP;
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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 NETMASK;
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port return PORT;
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portrange return PORTRANGE;
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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(yyextra, "%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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type return TYPE;
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subtype return SUBTYPE;
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direction|dir return DIR;
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address1|addr1 return ADDR1;
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address2|addr2 return ADDR2;
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address3|addr3 return ADDR3;
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address4|addr4 return ADDR4;
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ra return RA;
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ta return TA;
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less return LESS;
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greater return GREATER;
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byte return CBYTE;
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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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mpls return MPLS;
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pppoed return PPPOED;
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pppoes return PPPOES;
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geneve return GENEVE;
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lane return LANE;
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llc return LLC;
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metac return METAC;
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bcc return BCC;
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oam return OAM;
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oamf4 return OAMF4;
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oamf4ec return OAMF4EC;
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oamf4sc return OAMF4SC;
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sc return SC;
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ilmic return ILMIC;
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vpi return VPI;
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vci return VCI;
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connectmsg return CONNECTMSG;
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metaconnect return METACONNECT;
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on|ifname return PF_IFNAME;
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rset|ruleset return PF_RSET;
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rnr|rulenum return PF_RNR;
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srnr|subrulenum return PF_SRNR;
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reason return PF_REASON;
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action return PF_ACTION;
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fisu return FISU;
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lssu return LSSU;
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lsu return LSSU;
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msu return MSU;
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hfisu return HFISU;
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hlssu return HLSSU;
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hmsu return HMSU;
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sio return SIO;
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opc return OPC;
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dpc return DPC;
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sls return SLS;
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hsio return HSIO;
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hopc return HOPC;
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hdpc return HDPC;
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hsls return HSLS;
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[ \r\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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if (yylval->e == NULL)
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bpf_error(yyextra, "malloc");
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return AID; }
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{MAC} { yylval->e = pcap_ether_aton((char *)yytext);
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if (yylval->e == NULL)
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bpf_error(yyextra, "malloc");
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return EID; }
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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(yyextra, (char *)yytext); return HID; }
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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(yyextra, "bogus IPv6 address %s", yytext);
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else {
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freeaddrinfo(res);
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yylval->s = sdup(yyextra, (char *)yytext); return HID6;
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}
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#else
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bpf_error(yyextra, "IPv6 address %s not supported", yytext);
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#endif /*INET6*/
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}
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{B}:+({B}:+)+ { bpf_error(yyextra, "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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icmp6type { yylval->i = 0; return NUM; }
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icmp6code { yylval->i = 1; return NUM; }
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icmp6-echo { yylval->i = 128; return NUM; }
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icmp6-echoreply { yylval->i = 129; return NUM; }
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icmp6-multicastlistenerquery { yylval->i = 130; return NUM; }
|
|
icmp6-multicastlistenerreportv1 { yylval->i = 131; return NUM; }
|
|
icmp6-multicastlistenerdone { yylval->i = 132; return NUM; }
|
|
icmp6-routersolicit { yylval->i = 133; return NUM; }
|
|
icmp6-routeradvert { yylval->i = 134; return NUM; }
|
|
icmp6-neighborsolicit { yylval->i = 135; return NUM; }
|
|
icmp6-neighboradvert { yylval->i = 136; return NUM; }
|
|
icmp6-redirect { yylval->i = 137; return NUM; }
|
|
icmp6-routerrenum { yylval->i = 138; return NUM; }
|
|
icmp6-nodeinformationquery { yylval->i = 139; return NUM; }
|
|
icmp6-nodeinformationresponse { yylval->i = 140; return NUM; }
|
|
icmp6-ineighbordiscoverysolicit { yylval->i = 141; return NUM; }
|
|
icmp6-ineighbordiscoveryadvert { yylval->i = 142; return NUM; }
|
|
icmp6-multicastlistenerreportv2 { yylval->i = 143; return NUM; }
|
|
icmp6-homeagentdiscoveryrequest { yylval->i = 144; return NUM; }
|
|
icmp6-homeagentdiscoveryreply { yylval->i = 145; return NUM; }
|
|
icmp6-mobileprefixsolicit { yylval->i = 146; return NUM; }
|
|
icmp6-mobileprefixadvert { yylval->i = 147; return NUM; }
|
|
icmp6-certpathsolicit { yylval->i = 148; return NUM; }
|
|
icmp6-certpathadvert { yylval->i = 149; return NUM; }
|
|
icmp6-multicastrouteradvert { yylval->i = 151; return NUM; }
|
|
icmp6-multicastroutersolicit { yylval->i = 152; return NUM; }
|
|
icmp6-multicastrouterterm { yylval->i = 153; 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; }
|
|
tcp-ece { yylval->i = 0x40; return NUM; }
|
|
tcp-cwr { yylval->i = 0x80; return NUM; }
|
|
[A-Za-z0-9]([-_.A-Za-z0-9]*[.A-Za-z0-9])? {
|
|
yylval->s = sdup(yyextra, (char *)yytext); return ID; }
|
|
"\\"[^ !()\n\t]+ { yylval->s = sdup(yyextra, (char *)yytext + 1); return ID; }
|
|
[^ \[\]\t\n\-_.A-Za-z0-9!<>()&|=]+ {
|
|
bpf_error(yyextra, "illegal token: %s", yytext); }
|
|
. { bpf_error(yyextra, "illegal char '%c'", *yytext); }
|
|
%%
|
|
|
|
/*
|
|
* Turn diagnostics back on, so we check the code that we've written.
|
|
*/
|
|
DIAG_ON_FLEX
|
|
|
|
/* Hex digit to integer. */
|
|
static inline int
|
|
xdtoi(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(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;
|
|
}
|