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Diffstat (limited to 'scripts/dlt2name.pl')
| -rw-r--r-- | scripts/dlt2name.pl | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/scripts/dlt2name.pl b/scripts/dlt2name.pl new file mode 100644 index 0000000..f10dbbc --- /dev/null +++ b/scripts/dlt2name.pl @@ -0,0 +1,186 @@ +#!/usr/bin/perl -w + +# Parses the bpf.h header file to generate the dlt_names.h header +# which maps the DLT types to the DLT string name + +# run from the tcpreplay source base directory as: +# cat /usr/include/pcap-bpf.h | ./scripts/dlt2name.pl + +use strict; +my $out_c = 'src/common/dlt_names.c'; +my $out_h = 'src/common/dlt_names.h'; + +# open outfile +open(OUT_C, ">$out_c") or die("Unable to open $out_c for writing: $!"); +open(OUT_H, ">$out_h") or die("Unable to open $out_h for writing: $!"); + +# read STDIN + +# some DLT types aren't in a format we can parse easily or just doesn't +# exist in my /usr/include/net/bpf.h file so we list them here +my %known = (107 => 'BSD/OS Frame Relay', + 108 => 'OpenBSD Loopback', + 113 => 'Linux Cooked Sockets', + 114 => 'Apple LocalTalk', + 115 => 'Acorn Econet', + 116 => 'OpenBSD IPFilter', + 117 => 'OpenBSD PF Log/SuSE 6.3 LANE 802.3', + 118 => 'Cisco IOS', + 119 => '802.11 Prism Header', + 120 => '802.11 Aironet Header', + 121 => 'Siemens HiPath HDLC', + 122 => 'IP over Fibre Channel' + ); +my @names; + +# put our known DLT types in names since the format of bpf.h is +# inconsistent + +foreach my $dlt (keys %known) { + $names[$dlt]{name} = $known{$dlt}; +} + +while (my $line = <STDIN>) { + + if ($line =~ /^\#define\s+(DLT_[a-zA-Z0-9_]+)\s+(\d+)/) { + my $key = $1; + my $dlt = $2; + my $name = $names[$dlt]{name} ? $names[$dlt]{name} : ""; + if ($line =~ /\/\*\s+(.*)\s+\*\//) { + $name = $1; + } + $names[$dlt]{key} = $key; + $names[$dlt]{name} = $name; + } + +} + +# print the license info +while (my $line = <DATA>) { + print OUT_C $line; + print OUT_H $line; +} + +# prep the header +print OUT_C <<HEADER; + +#include <stdlib.h> + +/* DLT to descriptions */ +char *dlt2desc[] = { +HEADER + +for (my $i = 0; $i < $#names; $i ++) { + if (! defined $names[$i]) { + print OUT_C "\t\t\"Unknown\",\n"; + } else { + print OUT_C "\t\t\"$names[$i]->{name}\",\n"; + } +} + +print OUT_C <<FOOTER; +\t\tNULL +}; + +FOOTER + +print OUT_H <<HEADER; + +/* include all the DLT types form pcap-bpf.h */ + +extern const char *dlt2desc[]; +extern const char *dlt2name[]; +#define DLT2DESC_LEN $#names +#define DLT2NAME_LEN $#names + +HEADER + +for (my $i = 0; $i < 255; $i++) { + next if ! defined $names[$i]; + print OUT_H "#ifndef $names[$i]{key}\n#define $names[$i]{key} $i\n#endif\n\n"; +} + +print OUT_C <<NAMES; + +/* DLT to names */ +char *dlt2name[] = { +NAMES + +for (my $i = 0; $i < 255; $i++) { + if (! defined $names[$i]) { + print OUT_C "\t\t\"Unknown\",\n"; + } else { + print OUT_C "\t\t\"$names[$i]{key}\",\n"; + } +} + +print OUT_C <<FOOTER; +\t\tNULL +}; +FOOTER + +close OUT_C; +close OUT_H; + +exit 0; + +__DATA__ +/* + * Copyright (c) 2006 Aaron Turner + * All rights reserved. + * + * This file is generated by scripts/dlt2name.pl which converts your pcap-bpf.h + * header file which comes with libpcap into a header file + * which translates DLT values to their string names as well as a list of all + * of the available DLT types. + * + * Hence DO NOT EDIT THIS FILE! + * If your DLT type is not listed here, edit the %known hash in + * scripts/dlt2name.pl + * + * This file contains data which was taken from libpcap's pcap-bpf.h. + * The copyright/license is included below: + */ + + /*- + * Copyright (c) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from the Stanford/CMU enet packet filter, + * (net/enet.c) distributed as part of 4.3BSD, and code contributed + * to Berkeley by Steven McCanne and Van Jacobson both of Lawrence + * Berkeley Laboratory. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)bpf.h 7.1 (Berkeley) 5/7/91 + * + * @(#) $Header: /tcpdump/master/libpcap/pcap-bpf.h,v 1.34.2.6 2005/08/13 22:29:47 hannes Exp $ (LBL) + */ + |