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#!/usr/bin/perl
#
# Removes private information from Vyatta config files.
#
# Copyright (C) 2011 Daniil Baturin <daniil@baturin.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
# of the Software, and to permit persons to whom the Software is furnished to do
# so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
use strict;
use Getopt::Long;
sub help {
my $msg = <<EOL;
Strips off private information from Vyatta configs.
Usage: $0 </path/to/config>
$0 --stdin < </path/to/config> (or "cat /path/to/config | $0 --stdin")
Options:
--stdin Read config from standard input
--strict Remove any private information (see details in options below).
This is default behavior.
--loose Remove only information specified in options below
--address Strip off IPv4 and IPv6 addresses
--mac Strip off MAC addresses
--domain Strip off domain names
--hostname Strip off system host and domain names
--username Strip off user names
--dhcp Strip off DHCP shared network and static mapping names
--asn Strip off BGP ASNs
--lldp Strip off LLDP location information
--snmp Strip off SNMP location information
EOL
print $msg;
}
my $inputFile = undef;
my $stdin = undef;
my $strict = 1;
my $loose = undef;
my $stripIP = undef;
my $stripDomains = undef;
my $stripHostname = undef;
my $stripUsernames = undef;
my $stripDHCP = undef;
my $stripMAC = undef;
my $stripOvpnSecrets = undef;
my $stripASN = undef;
my $stripLLDP = undef;
my $stripSNMP = undef;
my $keepPasswords = undef;
my $keepKeys = undef;
my $input = undef;
GetOptions(
"stdin" => \$stdin,
"loose" => \$loose,
"strict" => \$strict,
"address" => \$stripIP,
"domain" => \$stripDomains,
"hostname" => \$stripHostname,
"username" => \$stripUsernames,
"mac" => \$stripMAC,
"dhcp" => \$stripDHCP,
"openvpn" => \$stripOvpnSecrets,
"asn" => \$stripASN,
"lldp" => \$stripLLDP,
"snmp" => \$stripSNMP,
"keep-passwords" => \$keepPasswords,
"keep-keys" => \$keepKeys
);
$strict = 0 if $loose;
if ($strict) {
$stripIP = 1;
$stripDomains = 1;
$stripHostname = 1;
$stripUsernames = 1;
$stripDHCP = 1;
$stripMAC = 1;
$stripOvpnSecrets = 1;
$stripASN = 1;
$stripLLDP = 1;
$stripSNMP = 1;
}
## Get config
$inputFile = @ARGV[0];
if ($stdin) {
while (<>) {
$input .= $_;
}
} elsif ($inputFile) {
open (HANDLE, "<$inputFile") or die "Can not open config file $inputFile";
while (<HANDLE>) {
$input .= $_;
}
close (HANDLE) or die $!;
} else {
help();
exit(0);
}
## Everybody stand back, I know regular expressions
# Strip passwords
$input =~ s/password \S+/password xxxxxx/g if !($keepPasswords);
# Strip public key information
$input =~ s/public-keys \S+/public-keys xxxx\@xxx.xxx/g if !($keepKeys);
$input =~ s/(type 'ssh-rsa'|type 'ssh-dss')/type ssh-xxx/g if !($keepKeys);
$input =~ s/ key \S+/ key xxxxxx/g if !($keepKeys);
# Strip MAC addresses
$input =~ s/([0-9A-F]{2}\:){3}([0-9A-F]{2}((\:{0,1})){3})/XX:XX:XX:$2/gi if $stripMAC;
# Strip IPv4 addresses
$input =~ s/\d+\.\d+\.(\d+)\.(\d+)/xxx.xxx.$1.$2/g if $stripIP;
# Strip IPv6 addresses
$input =~ s/ (([0-9a-f]{1,4}\:){2})(\S+)/ xxxx:xxxx:$3/gi if $stripIP;
# Strip host-name, domain-name, and domain-search
$input =~ s/(host-name|domain-name|domain-search) \S+/$1 xxxxxx/g if $stripHostname;
# Strip user-names
$input =~ s/(user|username|user-id|full-name) \S+/$1 xxxxxx/g if $stripUsernames;
# Strip DHCP static-mapping and shared network names
$input =~ s/(shared-network-name|static-mapping) \S+/$1 xxxxxx/g if $stripDHCP;
# Strip host/domain names
$input =~ s/ (peer|remote-host|local-host|server) ([\w-]+\.)+[\w-]+/ $1 xxxxx.tld/g if $stripDomains;
# Strip OpenVPN secrets
$input =~ s/(shared-secret-key-file|ca-cert-file|cert-file|dh-file|key-file|client) (\S+)/$1 xxxxxx/g if $stripOvpnSecrets;
# Strip IPSEC secrets
$input =~ s/pre-shared-secret \S+/pre-shared-secret xxxxxx/g if !($keepKeys);
# Strip BGP ASNs
$input =~ s/(bgp|remote-as) (\d+)/$1 XXXXXX/g if $stripASN;
# Strip LLDP location parameters
$input =~ s/(altitude|datum|latitude|longitude|ca-value|country-code) (\S+)/$1 xxxxxx/g if $stripLLDP;
# Strip SNMP location
$input =~ s/(location) \S+/$1 xxxxxx/g if $stripSNMP;
print $input;
exit(0);
|
