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#!/usr/bin/perl
################################################################################
# Mandriva Online Distribution Upgrade Helper                                  # 
#                                                                              #
# Copyright (C) 2008 Mandriva                                                  #
#                                                                              #
# Thierry Vignaud <tvignaud at mandriva dot com>                               #
#                                                                              #
# This program is free software; you can redistribute it and/or modify         #
# it under the terms of the GNU General Public License Version 2 as            #
# published by the Free Software Foundation.                                   #
#                                                                              #
# 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 strict;
use POSIX ":sys_wait_h";
use lib qw(/usr/lib/libDrakX);
use standalone; # for explanations
use common;
BEGIN { require_root_capability() }
use run_program;
use feature 'state';

BEGIN { unshift @::textdomains, 'mdkonline' }

use mygtk2 qw(gtknew); #- do not import gtkadd which conflicts with ugtk2 version
use ugtk2 qw(:all);
use lib qw(/usr/lib/libDrakX/drakfirsttime);
use mdkonline;
use Rpmdrake::open_db;


ugtk2::add_icon_path("/usr/share/mdkonline/pixmaps/");
my ($log_file);

my $new_distro_version;
foreach my $opt (@ARGV) {
    if ($opt =~ /--(rpm-root|urpmi-root)=(.*)/) {
        $::rpmdrake_options{$1}[0] = $2;
    } elsif ($opt =~ /--new_distro_version=(.*)/) {
        $new_distro_version = $1;
    }
}

my $root = Rpmdrake::open_db::fast_open_urpmi_db()->{root};

my $product_id = common::parse_LDAP_namespace_structure(cat_("$root/etc/product.id"));

run_program::raw({ detach => 1 }, 'ionice', '-p', $$, '-n7');

upgrade();

my ($refork_gurpmi);


sub run_gurpmi() {
    my @initial_args = '--replacefiles';
    while ($refork_gurpmi) {
        fork_gurpmi(@initial_args);
        undef @initial_args;
        my $status = $? >> 8;
            if ($refork_gurpmi && $status) {
                $refork_gurpmi--;
            } else {
                undef $refork_gurpmi;
            }
                if ($status) {
                    ugtk2::ask_warn(N("Error"),
                                    N("Installation failed"),
                                    N("Installation logs can be found in '%s'", $log_file)
                                );
                } else {
                    upgrade_distro_congratulations();
                }
    }
}

sub upgrade_distro_congratulations() {
    local $mygtk2::left_padding = 0;
    my $width = 500;
    my $w = ugtk2->new(N("Congratulations"));
    gtkadd($w->{window},
           gtknew('VBox', children_tight => [
               get_banner(),
               gtknew('Label_Left', text => N("Upgrade to Mandriva %s release was successfull.", $new_distro_version),
                      # explicitely wrap (for 2008.1):
                      line_wrap => 1,
                      # workaround infamous 6 years old gnome bug #101968:
                      width => $width - 50),
               gtknew('Label_Left', text => N("You should restart your system."),
                      # explicitely wrap (for 2008.1):
                      line_wrap => 1,
                      # workaround infamous 6 years old gnome bug #101968:
                      width => $width - 50),
               create_okcancel($w, N("Ok")),
           ]),
       );
    $w->{ok}->grab_focus;
    $w->main;
}

sub upgrade() {
    log::explanations("backuping urpmi configuration");
    cp_af("$root/etc/urpmi/urpmi.cfg", "$ENV{HOME}/urpmi.cfg.backup." . int(rand 100000));

    my $urpm = Rpmdrake::open_db::fast_open_urpmi_db();

    my $urpmi_lock = eval {
        local $urpm->{fatal} = sub { die @_ };
        urpm::lock::urpmi_db($urpm, 'exclusive');
    };

    if (my $err = $@) {
        log::explanations(sprintf("locking urpmi database failed: %s"), $err);
        return;
    }
    undef $urpmi_lock;

    log::explanations("removing all existing urpmi media for upgrade");
    run_program::run('urpmi.removemedia', if_($root, '--urpmi-root', $root), '-a');

    log::explanations("adding urpmi media for new distribution");
    my $product_type = lc($product_id->{type}); $product_type =~ s/\s//g;
    my $mirror_list = "http://api.mandriva.com/mirrors/$product_type.$new_distro_version.$product_id->{arch}.list?" .
      join(',', 'reason=upgrade', 'upgrade_by=mdkapplet', "upgrade_from=$product_id->{version}");
    system('gurpmi.addmedia', '--silent-success', if_($root, "--urpmi-root=$root"), '--distrib', '--mirrorlist', $mirror_list)
      and return;

    log::explanations("upgrading urpmi and rpmdrake");
    log::explanations("upgrading the whole system");
    # rerun gurpmi in case there was an issue (with eg: big transactions:
    $refork_gurpmi = 4;
    {
        # force PATH:
        local $ENV{TMPDIR} = undef;
        $log_file = chomp_(`mktemp -u -p $ENV{HOME}/ gurpmi_upgrade_to_2009.0_XXXXXXXX`) . '.log';
    }
    # we cannot use installUpdates() as MandrivaUpdate needs the media
    # flaged as update (or else, we need to add a new option to MandrivaUpdate):
    run_gurpmi();
}

sub fork_gurpmi {
    run_program::run('gurpmi', '>>', $log_file, '--auto', '--auto-select',
                      if_($root, "--urpmi-root=$root"), @_);
}