#!/usr/bin/perl
eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
if $running_under_some_shell;
=head1 NAME
libnetcfg - configure libnet
=head1 DESCRIPTION
The libnetcfg utility can be used to configure the libnet.
Starting from perl 5.8 libnet is part of the standard Perl
distribution, but the libnetcfg can be used for any libnet
installation.
=head1 USAGE
Without arguments libnetcfg displays the current configuration.
$ libnetcfg
# old config ./libnet.cfg
daytime_hosts ntp1.none.such
ftp_int_passive 0
ftp_testhost ftp.funet.fi
inet_domain none.such
nntp_hosts nntp.none.such
ph_hosts
pop3_hosts pop.none.such
smtp_hosts smtp.none.such
snpp_hosts
test_exist 1
test_hosts 1
time_hosts ntp.none.such
# libnetcfg -h for help
$
It tells where the old configuration file was found (if found).
The C<-h> option will show a usage message.
To change the configuration you will need to use either the C<-c> or
the C<-d> options.
The default name of the old configuration file is by default
"libnet.cfg", unless otherwise specified using the -i option,
C<-i oldfile>, and it is searched first from the current directory,
and then from your module path.
The default name of the new configuration file is "libnet.cfg", and by
default it is written to the current directory, unless otherwise
specified using the -o option, C<-o newfile>.
=head1 SEE ALSO
L, L
=head1 AUTHORS
Graham Barr, the original Configure script of libnet.
Jarkko Hietaniemi, conversion into libnetcfg for inclusion into Perl 5.8.
=cut
# $Id: Configure,v 1.8 1997/03/04 09:22:32 gbarr Exp $
use strict;
use IO::File;
use Getopt::Std;
use ExtUtils::MakeMaker qw(prompt);
use File::Spec;
use vars qw($opt_d $opt_c $opt_h $opt_o $opt_i);
##
##
##
my %cfg = ();
my @cfg = ();
my($libnet_cfg_in,$libnet_cfg_out,$msg,$ans,$def,$have_old);
##
##
##
sub valid_host
{
my $h = shift;
defined($h) && (($cfg{'test_exist'} == 0) || gethostbyname($h));
}
##
##
##
sub test_hostnames (\@)
{
my $hlist = shift;
my @h = ();
my $host;
my $err = 0;
foreach $host (@$hlist)
{
if(valid_host($host))
{
push(@h, $host);
next;
}
warn "Bad hostname: '$host'\n";
$err++;
}
@$hlist = @h;
$err ? join(" ",@h) : undef;
}
##
##
##
sub Prompt
{
my($prompt,$def) = @_;
$def = "" unless defined $def;
chomp($prompt);
if($opt_d)
{
print $prompt,," [",$def,"]\n";
return $def;
}
prompt($prompt,$def);
}
##
##
##
sub get_host_list
{
my($prompt,$def) = @_;
$def = join(" ",@$def) if ref($def);
my @hosts;
do
{
my $ans = Prompt($prompt,$def);
$ans =~ s/(\A\s+|\s+\Z)//g;
@hosts = split(/\s+/, $ans);
}
while(@hosts && defined($def = test_hostnames(@hosts)));
\@hosts;
}
##
##
##
sub get_hostname
{
my($prompt,$def) = @_;
my $host;
while(1)
{
my $ans = Prompt($prompt,$def);
$host = ($ans =~ /(\S*)/)[0];
last
if(!length($host) || valid_host($host));
$def =""
if $def eq $host;
print <<"EDQ";
*** ERROR:
Hostname `$host' does not seem to exist, please enter again
or a single space to clear any default
EDQ
}
length $host
? $host
: undef;
}
##
##
##
sub get_bool ($$)
{
my($prompt,$def) = @_;
chomp($prompt);
my $val = Prompt($prompt,$def ? "yes" : "no");
$val =~ /^y/i ? 1 : 0;
}
##
##
##
sub get_netmask ($$)
{
my($prompt,$def) = @_;
chomp($prompt);
my %list;
@list{@$def} = ();
MASK:
while(1) {
my $bad = 0;
my $ans = Prompt($prompt) or last;
if($ans eq '*') {
%list = ();
next;
}
if($ans eq '=') {
print "\n",( %list ? join("\n", sort keys %list) : 'none'),"\n\n";
next;
}
unless ($ans =~ m{^\s*(?:(-?\s*)(\d+(?:\.\d+){0,3})/(\d+))}) {
warn "Bad netmask '$ans'\n";
next;
}
my($remove,$bits,@ip) = ($1,$3,split(/\./, $2),0,0,0);
if ( $ip[0] < 1 || $bits < 1 || $bits > 32) {
warn "Bad netmask '$ans'\n";
next MASK;
}
foreach my $byte (@ip) {
if ( $byte > 255 ) {
warn "Bad netmask '$ans'\n";
next MASK;
}
}
my $mask = sprintf("%d.%d.%d.%d/%d",@ip[0..3],$bits);
if ($remove) {
delete $list{$mask};
}
else {
$list{$mask} = 1;
}
}
[ keys %list ];
}
##
##
##
sub default_hostname
{
my $host;
my @host;
foreach $host (@_)
{
if(defined($host) && valid_host($host))
{
return $host
unless wantarray;
push(@host,$host);
}
}
return wantarray ? @host : undef;
}
##
##
##
getopts('dcho:i:');
$libnet_cfg_in = "libnet.cfg"
unless(defined($libnet_cfg_in = $opt_i));
$libnet_cfg_out = "libnet.cfg"
unless(defined($libnet_cfg_out = $opt_o));
my %oldcfg = ();
$Net::Config::CONFIGURE = 1; # Suppress load of user overrides
if( -f $libnet_cfg_in )
{
%oldcfg = ( %{ do $libnet_cfg_in } );
}
elsif (eval { require Net::Config })
{
$have_old = 1;
%oldcfg = %Net::Config::NetConfig;
}
map { $cfg{lc $_} = $cfg{$_}; delete $cfg{$_} if /[A-Z]/ } keys %cfg;
#---------------------------------------------------------------------------
if ($opt_h) {
print <, and it is searched first from the current directory,
and then from your module path.
The default name of the new configuration file is "libnet.cfg", and by
default it is written to the current directory, unless otherwise
specified using the -o option.
EOU
exit(0);
}
#---------------------------------------------------------------------------
{
my $oldcfgfile;
my @inc;
push @inc, $ENV{PERL5LIB} if exists $ENV{PERL5LIB};
push @inc, $ENV{PERLLIB} if exists $ENV{PERLLIB};
push @inc, @INC;
for (@inc) {
my $trycfgfile = File::Spec->catfile($_, $libnet_cfg_in);
if (-f $trycfgfile && -r $trycfgfile) {
$oldcfgfile = $trycfgfile;
last;
}
}
print "# old config $oldcfgfile\n" if defined $oldcfgfile;
for (sort keys %oldcfg) {
printf "%-20s %s\n", $_,
ref $oldcfg{$_} ? @{$oldcfg{$_}} : $oldcfg{$_};
}
unless ($opt_c || $opt_d) {
print "# $0 -h for help\n";
exit(0);
}
}
#---------------------------------------------------------------------------
$oldcfg{'test_exist'} = 1 unless exists $oldcfg{'test_exist'};
$oldcfg{'test_hosts'} = 1 unless exists $oldcfg{'test_hosts'};
#---------------------------------------------------------------------------
if($have_old && !$opt_d)
{
$msg = <. To accept the
default, hit
EDQ
$msg = 'Enter a list of available NNTP hosts :';
$def = $oldcfg{'nntp_hosts'} ||
[ default_hostname($ENV{NNTPSERVER},$ENV{NEWSHOST},'news') ];
$cfg{'nntp_hosts'} = get_host_list($msg,$def);
#---------------------------------------------------------------------------
$msg = 'Enter a list of available SMTP hosts :';
$def = $oldcfg{'smtp_hosts'} ||
[ default_hostname(split(/:/,$ENV{SMTPHOSTS} || ""), 'mailhost') ];
$cfg{'smtp_hosts'} = get_host_list($msg,$def);
#---------------------------------------------------------------------------
$msg = 'Enter a list of available POP3 hosts :';
$def = $oldcfg{'pop3_hosts'} || [];
$cfg{'pop3_hosts'} = get_host_list($msg,$def);
#---------------------------------------------------------------------------
$msg = 'Enter a list of available SNPP hosts :';
$def = $oldcfg{'snpp_hosts'} || [];
$cfg{'snpp_hosts'} = get_host_list($msg,$def);
#---------------------------------------------------------------------------
$msg = 'Enter a list of available PH Hosts :' ;
$def = $oldcfg{'ph_hosts'} ||
[ default_hostname('dirserv') ];
$cfg{'ph_hosts'} = get_host_list($msg,$def);
#---------------------------------------------------------------------------
$msg = 'Enter a list of available TIME Hosts :' ;
$def = $oldcfg{'time_hosts'} || [];
$cfg{'time_hosts'} = get_host_list($msg,$def);
#---------------------------------------------------------------------------
$msg = 'Enter a list of available DAYTIME Hosts :' ;
$def = $oldcfg{'daytime_hosts'} || $oldcfg{'time_hosts'};
$cfg{'daytime_hosts'} = get_host_list($msg,$def);
#---------------------------------------------------------------------------
$msg = < external user & password
fwuser/fwpass => firewall user & password
0) None
1) -----------------------
USER user@remote.host
PASS pass
2) -----------------------
USER fwuser
PASS fwpass
USER user@remote.host
PASS pass
3) -----------------------
USER fwuser
PASS fwpass
SITE remote.site
USER user
PASS pass
4) -----------------------
USER fwuser
PASS fwpass
OPEN remote.site
USER user
PASS pass
5) -----------------------
USER user@fwuser@remote.site
PASS pass@fwpass
6) -----------------------
USER fwuser@remote.site
PASS fwpass
USER user
PASS pass
7) -----------------------
USER user@remote.host
PASS pass
AUTH fwuser
RESP fwpass
Choice:
EDQ
$def = exists $oldcfg{'ftp_firewall_type'} ? $oldcfg{'ftp_firewall_type'} : 1;
$ans = Prompt($msg,$def);
$cfg{'ftp_firewall_type'} = 0+$ans;
$def = $oldcfg{'ftp_firewall'} || $ENV{FTP_FIREWALL};
$cfg{'ftp_firewall'} = get_hostname("FTP proxy hostname :", $def);
}
else {
delete $cfg{'ftp_firewall'};
}
#---------------------------------------------------------------------------
if (defined $cfg{'ftp_firewall'})
{
print <new($libnet_cfg_out, "w") or
die "Cannot create `$libnet_cfg_out': $!";
print "Writing $libnet_cfg_out\n";
print $fh "{\n";
my $key;
foreach $key (keys %cfg) {
my $val = $cfg{$key};
if(!defined($val)) {
$val = "undef";
}
elsif(ref($val)) {
$val = '[' . join(",",
map {
my $v = "undef";
if(defined $_) {
($v = $_) =~ s/'/\'/sog;
$v = "'" . $v . "'";
}
$v;
} @$val ) . ']';
}
else {
$val =~ s/'/\'/sog;
$val = "'" . $val . "'" if $val =~ /\D/;
}
print $fh "\t'",$key,"' => ",$val,",\n";
}
print $fh "}\n";
$fh->close;
############################################################################
############################################################################
exit 0;