#!/usr/bin/perl -w
#
# Mindi main application
# Mini-distribution maker for the MondoRescue project
#
# $Id$
#
# Copyright B. Cornec 2008
# Provided under the GPL v2

# Syntax: see below

use strict 'vars';
use Getopt::Long qw(:config auto_abbrev no_ignore_case);
use Data::Dumper;
use English;
use File::Basename;
use File::Copy;
use File::stat;
use Digest::MD5 qw(md5_hex);
use lib qw (lib);
use POSIX qw(strftime);
use ProjectBuilder::Base;
use ProjectBuilder::Conf;
use ProjectBuilder::Distribution;
use ProjectBuilder::Display;
use MondoRescue::Mindi::LVM;
use MondoRescue::Base;

# Global variables
my %opts;					# CLI Options
my @date = pb_get_date();
my $mr_date = strftime("%Y-%m-%d %H:%M:%S", @date);

=pod

=head1 NAME

Mindi - Tool to create a boot environment from a distribution

=head1 DESCRIPTION

B<mindi> creates a bootable ISO/USB image using files from the system it runs on. B<mindi> will try hard to reproduce the environment of its host system including loaded modules to ensure that the system can be booted properly from the created rescue media. B<mindi> is used by monodarchive(8) to produce the required USB/ISO images but can also be used stand-alone.

For stand-alone usage, B<mindi> may be called without any parameters or switches. It will then interactively ask the user for all information required to create a set of boot/root media. Options on the command line or a configuration file can also be used to alter the way B<mindi> is working

The probably more frequent way of calling B<mindi> is non-interactively from mondoarchive(8) using a dedicated configuration file.

=head1 SYNOPSIS

mindi [-v]|[-q]|[-h]|[--man]

=head1 OPTIONS

=over 4

=item B<-v|--verbose>

Print a brief help message and exits.

=item B<-q|--quiet>

Do not print any output.

=item B<-h|--help>

Print a brief help message and exits.

=item B<--man>

Prints the manual page and exits.

=item B<-i|--iso iso_image>

Name of the ISO image you want to created.

=back 

=head1 WEB SITES

The main Web site of the project is available at L<http://www.mondorescue.org/>. Bug reports should be filled using the trac instance of the project at L<http://trac.mondorescue.org/>.

=head1 USER MAILING LIST

The miling list of the project is available at L<mailto:mondo@lists.sf.net>

=head1 CONFIGURATION FILES

The system administrator may have a configuration file in F<$HOME/.mondorescue>. The values in this file may overwrite any other configuration file value. 

Here is an example of such a configuration file:

 # mrcachedir points to the directory where the tool will store generated content
 # If not defined, mrcachedir is under /var/cache/mindi
 mrcachedir mindi = /var/cache/mindi
 
=head1 AUTHORS

The Mondorescue.org team L<http://www.mondorescue.org/> lead by Bruno Cornec L<mailto:bruno@mondorescue.org>.

=head1 COPYRIGHT

Mindi is distributed under the GPL v2.0 license
described in the file C<COPYING> included with the distribution.

=cut

# ---------------------------------------------------------------------------

# Initialize the syntax string

pb_syntax_init("mindi Version PBVER-rPBREV\n");
pb_display_init("text","");

# Handle options
#
GetOptions("help|?|h" => \$opts{'h'}, 
		"man" => \$opts{'man'},
		"verbose|v+" => \$opts{'v'},
		"quiet|q" => \$opts{'q'},
		"log-files|l=s" => \$opts{'l'},
		"force|f" => \$opts{'f'},
		"iso|i=s" => \$opts{'i'},
		"usb|u=s" => \$opts{'u'},
		"tape|t=s" => \$opts{'t'},
		"printvar|p=s" => \$opts{'p'},
		"obdr|o" => \$opts{'o'},
		"version|V" => \$opts{'V'},
) || pb_syntax(-1,0);

# easy options
if (defined $opts{'h'}) {
	pb_syntax(0,1);
}
if (defined $opts{'man'}) {
	pb_syntax(0,2);
}
if (defined $opts{'p'}) {
	pb_display("$ENV{$opts{'p'}}\n");
	exit(0);
}

if (defined $opts{'v'}) {
	$pbdebug = $opts{'v'};
}

my $force = 0;

if (defined $opts{'f'}) {
	$force=1;
}
if (defined $opts{'q'}) {
	$pbdebug=-1;
}
my $iso;

if (defined $opts{'i'}) {
	$iso = $opts{'i'};
}

#
# Global variables
#
my $MINDI_VERSION = "PBVER-rPBREV";
my $MINDI_PREFIX = "XXX";
my $MINDI_CONF = "YYY";
my $MINDI_LIB = "LLL";
my $MINDI_SBIN = "$MINDI_PREFIX/sbin";
my $MINDI_FDISK = "$MINDI_SBIN/parted2fdik";
my $MINDI_DEPLIST = "$MINDI_CONF/deplist.d";
# Better ?
my $ARCH = `uname -m`;
chop($ARCH);

# 
# Temp dir
#
pb_temp_init();

#
# Conf files Management
# the $MINDI_CONF/mondorescue.conf.dist is delivered as part of the project and
# its checksum is verified as we need good default values that we can trust
#
open(MD5,"$MINDI_CONF/mondorescue.conf.dist.md5") || die "Unable to read mandatory $MINDI_CONF/mondorescue.conf.dist.md5: $!";
my $omd5 = <MD5>;
chop($omd5);
close(MD5);
open(CONF,"$MINDI_CONF/mondorescue.conf.dist") || die "Unable to read mandatory $MINDI_CONF/mondorescue.conf.dist: $!";
my $md5 = Digest::MD5->new;
binmode(CONF);
$md5->addfile(CONF);
die "Invalid MD5 found sum for $MINDI_CONF/mondorescue.conf.dist: $md5->hexdigest" if ($omd5 ne $md5->hexdigest);
close(CONF);

pb_conf_add("$ENV{'HOME'}/.mondorescuerc","$MINDI_CONF/mondorescue.conf","$MINDI_CONF/mondorescue.conf.dist");

#
# Configuration parameters
#
$ENV{'PBPROJ'} = "mindi";
my ($mr_boot_size,$mr_boot_cd,$mr_boot_usb,$mr_boot_tape,$mr_kernel,$mr_fstab) =  pb_conf_get("mr_boot_size","mr_boot_cd","mr_boot_usb","mr_boot_tape","mr_kernel","mr_fstab");
my ($mr_tape_mods,$mr_scsi_mods,$mr_ide_mods,$mr_pcmcia_mods,$mr_usb_mods,$mr_net_mods,$mr_cdrom_mods,$mr_deny_mods,$mr_force_mods) =  pb_conf_get("mr_tape_mods","mr_scsi_mods","mr_ide_mods","mr_pcmcia_mods","mr_usb_mods","mr_net_mods","mr_cdrom_mods","mr_extra_mods","mr_deny_mods","mr_force_mods");
my ($mr_logfile,$mr_cache_dir,$mr_boot_msg,$mr_burn_cmd,$mr_burn_opt) = pb_conf_get("mr_logfile","mr_cache_dir","mr_boot_msg","mr_burn_cmd","mr_burn_opt");

#
# Manage log file
#
my $logfile = $mr_logfile->{$ENV{'PBPROJ'}};

if (defined $opts{'l'}) {
	$logfile = $opts{'l'};
}
open(pbLOG,"> $logfile") || die "Unable to log to $logfile: $!";
$pbLOG = \*pbLOG;
$pbdebug = 0  if ($pbdebug == -1);
pb_log_init($pbdebug, $pbLOG);

pb_log(0,"mindi start date: $mr_date");
pb_log(0,"-------------------------------------");
pb_log(0,"mindi v$MINDI_VERSION");
pb_log(0,"$ARCH architecture detected");
pb_log(0,"mindi called with the following arguments: ".join(" ",@ARGV));
pb_log(0,"-------------------------------------");
pb_log(0,"MONDO_CACHE: $ENV{'MONDO_CACHE'}") if (defined $ENV{'MONDO_CACHE'});
pb_log(0,"MINDI_LIB: $MINDI_LIB");
pb_log(0,"MINDI_CONF: $MINDI_CONF");
pb_log(0,"MINDI_SBIN: $MINDI_SBIN");
if (-r "$ENV{'HOME'}/.mondorescuerc") {
	pb_log(0,"-------------------------------------");
	pb_log(0,"Conf file $ENV{'HOME'}/.mondorescuerc");
	pb_display_file("$ENV{'HOME'}/.mondorescuerc");
}
if (-r "$MINDI_CONF/mondorescue.conf") {
	pb_log(0,"-------------------------------------");
	pb_log(0,"Conf file $MINDI_CONF/mondorescue.conf");
	pb_display_file("$MINDI_CONF/mondorescue.conf");
}
pb_log(0,"-------------------------------------");

#
# Prepare cache dir
#
pb_rm_rf("$mr_cache_dir/*");
pb_mkdir_p($mr_cache_dir);

# 
# LVM setup
#
my ($lvmver,$lvmcmd) = mr_lvm_check();

pb_log(0,"LVM $lvmver command set to $lvmcmd");
pb_log(0,"-------------------------------------");
mr_exit(0);