/
pcf2vpnc
executable file
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/
pcf2vpnc
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#!/usr/bin/env perl
# Stefan Tomanek <stefan@pico.ruhr.de>
# updated by Wolfram Sang <ninja@the-dreams.de> on 21.10.06 and on 26.06.07
##
# pcf2vpnc <pcf file> [vpnc file]
##
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# $Id$
use IO::File;
use strict;
use warnings;
my %authmode = ( 1 => 'psk', 3 => 'cert', 5 => 'hybrid' );
my $needs_cert = 0;
my $no_decrypt = 0;
if (system("cisco-decrypt", "q") == -1) {
$no_decrypt = 1;
print STDERR "cisco-decrypt not in search path,\n";
print STDERR " adding passwords in obfuscated form\n";
}
sub readPCF($) {
my ($file) = @_;
my %config;
while (<$file>) {
# Filter unnecessary chars at beginning & end of line
s/^!*//; s/[\r ]*$//;
if (/^(.*?)=(.*?)$/) {
# We don't need emtpy config strings
next if ($2 eq "");
if ($1 eq "Host") {
$config{IPSec}{gateway} = $2;
} elsif ($1 eq "GroupName") {
$config{IPSec}{ID} = $2;
} elsif ($1 eq "GroupPwd") {
$config{IPSec}{secret} = $2;
} elsif ($1 eq "enc_GroupPwd") {
if ($no_decrypt) {
$config{IPSec}{obfuscated} = "secret $2";
} else {
$config{IPSec}{secret} = `cisco-decrypt $2`;
}
} elsif ($1 eq "AuthType") {
$config{IKE}{Authmode} = $authmode{$2};
if ($2 == 3 || $2 == 5) {
$needs_cert = 1;
}
} elsif ($1 eq "DHGroup") {
$config{IKE}{DH} = "Group dh$2";
} elsif ($1 eq "Username") {
$config{Xauth}{username} = $2;
} elsif ($1 eq "UserPassword") {
$config{Xauth}{password} = $2;
} elsif ($1 eq "enc_UserPassword") {
if ($no_decrypt) {
$config{Xauth}{obfuscated} = "password $2";
} else {
$config{Xauth}{password} = `cisco-decrypt $2`;
}
} elsif ($1 eq "NTDomain") {
$config{Domain}{""} = $2;
}
}
}
return \%config;
}
sub writeVPNC($) {
my ($config) = @_;
my $text = "## generated by pcf2vpnc\n";
foreach my $section (keys %$config) {
foreach my $item (keys %{ $config->{$section} }) {
$text .= "$section ".($item ? "$item " : '').$config->{$section}{$item}."\n";
}
}
unless (defined $config->{Xauth}) {
$text .= "\n## To add your username and password,\n";
$text .= "## use the following lines:\n";
$text .= "# Xauth username <your username>\n";
$text .= "# Xauth password <your password>\n";
}
return $text;
}
if (defined $ARGV[0]) {
my $src = new IO::File($ARGV[0]) || die "Unable to open file ".$ARGV[0]."\n";
if (defined $ARGV[1]) {
my $dst = new IO::File($ARGV[1], "w") || die "Unable to open file ".$ARGV[1]."\n";
$dst->write( writeVPNC(readPCF($src)) ) || die "Unable to write to file ".$ARGV[1]."\n";
$dst->close() || die "Unable to close file ".$ARGV[1]."\n";
printf STDERR "vpnc config written to '%s' with permissions '%04o'.\n", $ARGV[1], (stat($ARGV[1]))[2];
print STDERR "Please take care of permissions.\n";
} else {
print writeVPNC(readPCF($src));
}
$src->close() || die "Unable to close file ".$ARGV[0]."\n";
if ($needs_cert) {
print STDERR "\nDon't forget to copy the needed certificate(s).\n\n";
}
} else {
print STDERR "$0 converts VPN-config files from pcf to vpnc-format.\n";
print STDERR "Usage: $0 <pcf file> [vpnc file]\n";
}