mirror of
https://github.com/xcat2/xNBA.git
synced 2024-12-04 18:44:36 +00:00
192 lines
6.6 KiB
Perl
192 lines
6.6 KiB
Perl
#!/usr/bin/perl -w
|
|
#
|
|
# A program to make a netbootable image from a LRP firewall floppy
|
|
#
|
|
# Tested on a Dachstein Linux floppy image available from
|
|
# http://lrp1.steinkuehler.net/ or via http://leaf.sourceforge.net/
|
|
|
|
# The most recent version of this script and a companion HowTo is available at
|
|
# http://members.optushome.com.au/graybeard/linux/netboot.html
|
|
#
|
|
# Modified from the mklrpnb file found in the contrib/mklrpnb directory of the
|
|
# Etherboot source at http://etherboot.sourceforge.net/
|
|
#
|
|
# Modifications by Glenn McK <graybeard@users.sourceforge.net>
|
|
# $Id$
|
|
#####################################
|
|
|
|
# this entry will need changing
|
|
$image = "/home/graybeard/etherboot/dachstein-v1.0.2-1680.bin";
|
|
|
|
# these can remain, but change them if desired
|
|
#
|
|
# the next argument defaults to firewall if no other name is passed via the
|
|
# command line, this will be the directory where distribution will be expanded
|
|
# under $base and also the directory in /tftpboot for lrp.nb
|
|
|
|
my $uniqdir = shift || 'firewall';
|
|
|
|
$mntdir = "/mnt/floppy"; # where the above image file can be mounted
|
|
$tftpbase = "/tftpboot";
|
|
$tftpboot = "$tftpbase/$uniqdir"; # where the netboot images will be available
|
|
$base = "/usr/src/LRP";
|
|
$dachorg = "$base/dach-org-$uniqdir"; # a copy required to make the distribution
|
|
$dachnew = "$base/lrp-$uniqdir"; # the base files for the new distribution
|
|
$packages = "$dachnew/var/lib/lrpkg"; # list to allow lrcfg to display Packages
|
|
|
|
# everything below should be okay
|
|
######################################
|
|
|
|
if ( !-e $image ) {
|
|
print
|
|
"\n\tA valid LRP file and directory are required\n\tdownload one then edit $0\n\n";
|
|
exit 1;
|
|
}
|
|
if ( !-d $base ) {
|
|
mkdir( $base, 0700 );
|
|
}
|
|
|
|
if ( !-d $dachorg ) {
|
|
mkdir( $dachorg, 0700 );
|
|
}
|
|
|
|
if ( !-d $dachnew ) {
|
|
mkdir( $dachnew, 0700 );
|
|
`umount $mntdir`;
|
|
`mount -o ro,loop $image $mntdir`;
|
|
|
|
`cp -vr $mntdir/* $dachorg/`;
|
|
|
|
@cfg = `cat $mntdir/syslinux.cfg`;
|
|
|
|
unless ( defined(@cfg) ) {
|
|
print "Cannot find syslinux.cfg on $mntdir\n";
|
|
exit 1;
|
|
}
|
|
print "cfg = @cfg\n";
|
|
($append) = grep( /append/, @cfg ); # find the append= line
|
|
print "append = \n$append\n";
|
|
chomp($append); # remove trailing newline
|
|
$append =~ s/append=//; # remove the append= at beginning
|
|
print "strip append = \n$append\n\n";
|
|
@args = split ( / /, $append ); # split into arguments at whitespace
|
|
($root) = grep( /^initrd=/, @args ); # find the initrd= argument
|
|
$root =~ s/^initrd=//; # remove the initrd= at beginning
|
|
$root =~ s/\.lrp$//; # cleanup for paclages list
|
|
print "strip initrd = \n$root\n\n";
|
|
($lrp) = grep( /^LRP=/, @args ); # find the LRP= argument
|
|
$lrp =~ s/^LRP=//; # remove the LRP= at beginning
|
|
print "strip LRP =\n$lrp\n\n";
|
|
@lrp = split ( /,/, $lrp ); # split into filenames at ,
|
|
unshift ( @lrp, $root ); # prepend the root LRP filename
|
|
@pack = @lrp;
|
|
print "LRP =\n@lrp\n\n";
|
|
$append = '';
|
|
|
|
foreach $i (@args) { # rebuild the append string
|
|
next if ( $i =~ /^initrd=/ ); # minus the unneeded parameters
|
|
next if ( $i =~ /^LRP=/ );
|
|
next if ( $i =~ /^boot=/ );
|
|
next if ( $i =~ /^PKGPATH=/ );
|
|
print "$i = i\n";
|
|
$append .= "$i ";
|
|
}
|
|
|
|
print "final append = \n$append\n";
|
|
|
|
chdir($dachnew) or die "$dachnew: $!\n";
|
|
foreach $i (@lrp) {
|
|
$i .= '.lrp' if $i !~ /\.lrp$/;
|
|
print "\n\n\nUnpacking $i\n";
|
|
system("ln -svf $dachorg/$i ${dachorg}/${i}.tar.gz");
|
|
chmod 0600, "$dachorg/$i";
|
|
system("cat $mntdir/$i | tar zxvf -");
|
|
}
|
|
|
|
# create file for lrcfg to display packages
|
|
open( PACKAGES, ">$packages/packages" )
|
|
|| print "unable to modify $packages:$!\n";
|
|
foreach $line (@pack) {
|
|
print PACKAGES "$line\n";
|
|
}
|
|
close PACKAGES;
|
|
|
|
# prevent previous file from being overwritten during installation
|
|
# and also mess with some values in /linuxrc to hide non errors
|
|
open( LINUXRC, "$packages/root.linuxrc" );
|
|
@text = <LINUXRC>;
|
|
close LINUXRC;
|
|
open( LINUXRC, ">$packages/root.linuxrc" );
|
|
foreach $line (@text) {
|
|
$line =~ s/PFX\/packages/PFX\/packages-old \
|
|
\t\t\t\t# packages changed to packages-old for netboot setup/;
|
|
$line =~
|
|
s/^rc=1/# rc=1 changed to rc=0 to suppress error messages for netboot setup \
|
|
rc=0/;
|
|
$line =~
|
|
s/echo -n \" \(nf\!\)\"/#echo -n \" \(nf\!\)\" changed to reflect ToDo list \
|
|
\t\t\techo -n \" netboot setup - No backups possible from this machine - ToFix ?"/;
|
|
print LINUXRC $line;
|
|
}
|
|
close LINUXRC;
|
|
|
|
# swap interfaces around in network config file
|
|
# eth1 is the new external eth0 is OUR internal server access
|
|
open( NETWORK, "$dachnew/etc/network.conf" )
|
|
|| print "Unable to modify NETWORK:$!\n";
|
|
@text = <NETWORK>;
|
|
close NETWORK;
|
|
open( NETWORK, ">$dachnew/etc/network.conf" )
|
|
|| print "Unable to modify NETWORK:$!\n";
|
|
foreach $line (@text) {
|
|
$line =~ s/eth0/eth00/;
|
|
$line =~ s/eth1/eth0/;
|
|
$line =~ s/eth00/eth1/;
|
|
print NETWORK $line;
|
|
}
|
|
close NETWORK;
|
|
|
|
`echo $append > $dachorg/appendstr`;
|
|
|
|
`umount /mnt/floppy`;
|
|
print "\nThe files have been extracted to $dachnew\n";
|
|
system("ls -al $dachnew");
|
|
}
|
|
else {
|
|
print "\n\n\t$image \n \thas already been extracted to $dachnew \
|
|
\tNow skipping to the next step where the netboot file\
|
|
\twill be created.\n";
|
|
|
|
$append = `cat $dachorg/appendstr`;
|
|
print "\nThe new append string will be...\n$append\n";
|
|
|
|
chdir($dachnew);
|
|
if ( !-d $tftpbase ) {
|
|
mkdir( $tftpbase, 0710 );
|
|
system("chgrp nobody $tftpbase");
|
|
}
|
|
|
|
unlink($tftpboot);
|
|
|
|
# these permissions really need changing to something secure
|
|
mkdir( $tftpboot, 0710 );
|
|
system("chgrp nobody $tftpboot");
|
|
print "\tRepacking to $tftpboot/lrp.lrp\n";
|
|
system("tar zcf $tftpboot/lrp.lrp *");
|
|
print "\tExtracting kernel image from $dachorg\n";
|
|
system("cat $dachorg/linux > $tftpboot/lrp.ker");
|
|
print "\tCreating netboot image $tftpboot/lrp.nb\n";
|
|
system(
|
|
"mknbi-linux --append='$append' --output=$tftpboot/lrp.nb $tftpboot/lrp.ker $tftpboot/lrp.lrp"
|
|
);
|
|
chmod 0604, "$tftpboot/lrp.nb", "$tftpboot/lrp.ker", "$tftpboot/lrp.lrp";
|
|
print "\nThese netboot files are in $tftpboot\n";
|
|
system("ls -al $tftpboot");
|
|
print "\n The owner and permissions for $tftpboot \
|
|
and files should be checked for security. The above\
|
|
permissions assume that tftp is running chroot (nobody)
|
|
drwx--r--- root:nobody /tftpboot\n\n";
|
|
}
|
|
|
|
exit 0;
|