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#!/usr/bin/perl

# Copyright (C) 2005 Mandriva
#                    Olivier Blin <oblin@mandriva.com>
# Copyright (C) 2017 Mageia
#                    Martin Whitaker <mageia@martin-whitaker.me.uk>
#
# 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, 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.

use lib qw(/usr/lib/libDrakX);

use strict;

use MDK::Common;
use common;

use Getopt::Long;
use Pod::Usage;

use MGA::DrakISO::Config;
use MGA::DrakISO::LiveBuild;
use MGA::DrakISO::Utils;

use MGA::DrakISO::BuildRoot;
use MGA::DrakISO::BuildBoot;
use MGA::DrakISO::BuildLoop;
use MGA::DrakISO::BuildISO;

###############################################################################
# Actions
###############################################################################

sub clean {
    my ($live) = @_;
    # make sure no external filesystems are mounted before cleaning
    umount_external_fs($live);
    rm_rf($_) foreach grep { -e $_ } $live->get_builddir, $live->get_system_root;
}

sub prepare_root {
    my ($live) = @_;
    MGA::DrakISO::BuildRoot::install_live_system($live);
    MGA::DrakISO::BuildRoot::customise_live_system($live);
}

sub prepare_boot {
    my ($live) = @_;
    MGA::DrakISO::BuildBoot::prepare_live_system_boot($live);
    MGA::DrakISO::BuildBoot::prepare_iso_bootloader($live);
}

###############################################################################
# Main Program
###############################################################################

my @actions = (
    { name => 'dump-config',    do => \&MGA::DrakISO::Config::dump_config },
    { name => 'clean',          do => \&clean },
    { name => 'root',           do => \&prepare_root },
    { name => 'root-create',    do => \&MGA::DrakISO::BuildRoot::install_live_system },
    { name => 'root-customise', do => \&MGA::DrakISO::BuildRoot::customise_live_system },
    { name => 'boot',           do => \&prepare_boot },
    { name => 'boot-system',    do => \&MGA::DrakISO::BuildBoot::prepare_live_system_boot },
    { name => 'boot-loader',    do => \&MGA::DrakISO::BuildBoot::prepare_iso_bootloader },
    { name => 'loop',           do => \&MGA::DrakISO::BuildLoop::build_live_loopback_files },
    { name => 'master',         do => \&MGA::DrakISO::BuildISO::build_live_iso },
);
my @all = qw(root boot loop master);

die "you must be root to run this program\n" if $>;

my $live_object   = 'MGA::DrakISO::LiveBuild'->new;
my $config_root   = $MGA::DrakISO::Config::default_config_root;
my $config_path   = $MGA::DrakISO::Config::default_config_path;
my $settings_path = $MGA::DrakISO::Config::default_settings_path;

GetOptions(
    "help"              => sub { Pod::Usage::pod2usage('-verbose' => 1) },
    "all"               => sub { $_->{to_run} = 1 foreach grep { member($_->{name}, @all) } @actions },
    (map { $_->{name}   => \$_->{to_run} } @actions),
    "all-regions"       => sub { $live_object->{all_regions} = 1 },
    "config-root=s"     => \$config_root,
    "config=s"          => \$config_path,
    "settings=s"        => \$settings_path,
    "define=s"          => \%{$live_object->{settings}},
) or Pod::Usage::pod2usage();

require standalone;
    every { !$_->{to_run} } @actions and Pod::Usage::pod2usage();

    MGA::DrakISO::Config::read_config($live_object, $config_root, $config_path, $settings_path);
    MGA::DrakISO::Config::check_config($live_object);
    MGA::DrakISO::Config::complete_config($live_object);

    foreach my $region ($live_object->{all_regions} ? sort(keys %{$live_object->{regions}}) : $live_object->{settings}{region}) {
        $region and print qq(=== proceeding with region "$region"\n);
        $live_object->{settings}{region} = $region;
        foreach (grep { $_->{to_run} } @actions) {
            print qq(* entering step "$_->{name}"\n);
            $_->{do}->($live_object);
            print qq(* step "$_->{name}" done\n);
        }
    }

__END__

###############################################################################
# Documentation
###############################################################################

=head1 NAME

draklive - A live distribution mastering tool

=head1 SYNOPSIS

draklive [options]

 Options:
   --help            long help message

   --root            install and customise live system in chroot
   --boot            prepare system boot and ISO bootloader files
   --loop            build compressed loopback files
   --master          build master image

   --all             run all the above steps

   --clean           clean installation chroot and work directory

   --root-install    (for debug) run base install of live system
   --root-customise  (for debug) run system customisation steps

   --boot-system     (for debug) prepare kernel and initrd for system boot
   --boot-loader     (for debug) prepare bootloader for ISO

   --config-root <dir>
                     root directory containing config and additional files
                     defaults to current directory if it contains a
                     configuration file, otherwise to "/etc/draklive"

   --config <file>   use this configuration file as live description
                     defaults to "config/live.cfg"

   --settings <file> use this file as live settings (key=value format)
                     defaults to "config/settings.cfg"

   --define key=value
                     set setting "key" to "value"
                     takes precedence over values from a settings file

   --all-regions     proceed with all configured regions

Examples:

 draklive --clean

 draklive --all

 draklive --config config/live.cfg --root

=head1 OPTIONS

=over 8

=item B<--config>

Makes draklive use the next argument as a configuration file.
This file should contain a hash describing the live distribution.
See the "drakiso-live" page on the Mageia Wiki for details.

=item B<--settings>

Makes draklive load the next argument as a file in key=value format into
the $live->{settings} hash ($live being the global live configuration hash).

Built-in keys:

  arch:       build architecture

  builddir:   directory hosting build files (initrd, loopbacks, images)

  chroot:     directory hosting chrooted installations

  region:     use the matching set of langs from the regions configuration hash

  repository: path to the Mandriva distribution repository (ftp/http/local)

Example keys:
  desktop
  media
  product

=back

=head1 DESCRIPTION

B<draklive> builds a live distribution according to a configuration file,
creates a master image, and optionally installs it on a device.

See L<https://wiki.mageia.org/en/drakiso-live>

=head1 AUTHORS

Olivier Blin <oblin@mandriva.com>
Martin Whitaker <mageia@martin-whitaker.me.uk>

=cut