#!/usr/bin/perl

use strict;

use lib qw(/usr/lib/libDrakX);
# i18n: IMPORTANT: to get correct namespace (drakx-net instead of libDrakX)
BEGIN { unshift @::textdomains, 'drakx-net' }
use c;
use common;
use standalone;
use network::network;
use network::tools;
use network::connection;
use network::connection::ethernet;
use network::vpn;
use run_program;
use mygtk2 qw(gtknew gtkset);
use dbus_object;
use network::monitor;
use network::signal_strength;
use detect_devices;
use Gtk2::Notify -init, 'notify';

use ugtk2 qw(:create :helpers :wrappers :dialogs);

my $onstartupfile = "$ENV{HOME}/.net_applet";
my $system_file = '/etc/sysconfig/drakx-net';
shouldStart() or die "$onstartupfile should be set to TRUE or use net_applet --force\n";

#- Allow multiple instances, but only one per user:
is_running('net_applet') and die "net_applet already running\n";

package network::net_applet;

use mygtk2 qw(gtknew gtkset);
use common;

our ($current_state, $current_interface);
our ($icon, $notification_queue);
our $dbus;
our ($interactive_cb, $ifw, $ifw_alert);

our %wireless_networks;

our %pixbufs =
  (
      firewall => gtknew('Pixbuf', file => 'drakfirewall'),
      firewall_icon => gtknew('Pixbuf', file => 'drakfirewall')->scale_simple(24, 24, 'hyper'),
      state => { map { $_ => gtknew('Pixbuf', file => $_) } qw(connected disconnected unconfigured) },
      link_level => { map {
          $_ => gtknew('Pixbuf', file => 'wifi-' . sprintf('%03d', $_))->scale_simple(24, 24, 'hyper');
      } qw(20 40 60 80 100) },
      encryption => { map {
          $_ => gtknew('Pixbuf', file => "encryption-$_-24");
      } qw(open weak strong) },
  );

sub get_current_network() {
    detect_devices::is_wireless_interface($current_interface) && find { $_->{current} } values %wireless_networks;
}

sub get_state_pixbuf() {
    my $wnet = $current_state eq 'connected' && get_current_network();
    $wnet ?
      network::signal_strength::get_strength_icon($wnet) :
      $pixbufs{state}{$current_state};
}

sub update_tray_icon() {
    if (!$ifw_alert || $icon->get_storage_type ne 'pixbuf') {
        $icon->set_from_pixbuf(get_state_pixbuf());
    } else {
        $icon->set_from_stock('gtk-dialog-warning');
    }
}

1;

package main;

my ($current_description, $simple_menu, $menu, $wireless_device, $timeout, $update_timeout);
add_icon_path("/usr/share/libDrakX/pixmaps/");

my $net = {};
my $watched_interface;

my %global_settings = getVarsFromSh($system_file);

sub get_state_message {
    my ($o_interface) = @_;
    my $interface = $o_interface || $current_interface;
    my $network = network::net_applet::get_current_network();
    formatAlaTeX(
        $current_state eq 'connected' ?
          N("Network is up on interface %s.", get_interface_name($interface)) .
          "\n\n" . N("IP address: %s", network::tools::get_interface_ip_address($net, $interface)) .
          "\n\n" . N("Gateway: %s", [ network::tools::get_interface_status($interface) ]->[1]) .
          "\n\n" . N("DNS: %s", $net->{resolv}{dnsServer}) .
            ($network && "\n\n" . N("Connected to %s (link level: %d %%)", $network->{name}, $network->{signal_strength}))
        : $current_state eq 'disconnected' ?
          N("Network is down on interface %s.", get_interface_name($interface))
        :
          N("You do not have any configured Internet connection.
Run the \"%s\" assistant from the Mandriva Linux Control Center", N("Set up a new network interface (LAN, ISDN, ADSL, ...)"))
    );
}

sub get_interface_type {
    my ($interface) = @_;
    my $ifcfg = $net->{ifcfg}{$interface};
    require network::connection;
    $ifcfg && network::connection->find_ifcfg_type($ifcfg);
}

sub get_interface_icon {
    my ($interface) = @_;
    my $type = get_interface_type($interface);
    $type && $type->get_type_icon;
}

sub get_interface_name {
    my ($interface) = @_;
    my $type = get_interface_type($interface);
    my $type_name = $type && $type->get_type_description;
    $type_name ? "$type_name ($interface)" : $interface;
}

my %actions = (
               'upNetwork' => { name => sub { N("Connect %s", get_interface_name($_[0])) }, launch => sub { network::tools::start_interface($_[0], 1) } },
               'downNetwork' => { name => sub { N("Disconnect %s", get_interface_name($_[0])) }, launch => sub { network::tools::stop_interface($_[0], 1) } },
               'monitorNetwork' => { name => N("Monitor Network"), launch => \&run_net_monitor },
               'monitorIFW' => { name => N("Interactive Firewall"), launch => \&run_drakids },
               'wireless' => { name => N("Manage wireless networks"), launch => sub { run_drakroam() } },
               'drakvpn' => {
                   name => N("Manage VPN connections"), launch => sub {
                       run_program::raw({ detach => 1 }, '/usr/sbin/drakvpn');
                   },
               },
               'confNetwork' => { name => N("Configure Network"), launch => sub { system("/usr/sbin/drakconnect &") } },
               'chooseInterface' => {
                   name => N("Watched interface"),
                   choices => sub { N("Auto-detect"), sort keys %{$net->{ifcfg}} },
                   choice_selected => sub { $watched_interface ? $_[0] eq $watched_interface : $_[0] eq N("Auto-detect") },
                   launch => sub {
                       $watched_interface = $_[0] eq N("Auto-detect") ? undef : $_[0];
                       checkNetworkForce();
                   }
               },
               'setInterface' => {
                   name => N("Active interfaces"),
                   use_checkbox => 1,
                   choices => sub { sort keys %{$net->{ifcfg}} },
                   choice_selected => sub {
                       my ($is_up, $_gw) = network::tools::get_interface_status($_[0]);
                       $is_up;
                   },
                   format_choice => \&get_interface_name,
                   get_icon => \&get_interface_icon,
                   launch => sub {
                       my ($is_up, $_gw) = network::tools::get_interface_status($_[0]);
                       if ($is_up) {
                           network::tools::stop_interface($_[0], 1);
                       } else {
                           network::tools::start_interface($_[0], 1);
                       }
                       checkNetworkForce();
                   }
               },
               'chooseProfile' => {
                   name => N("Profiles"),
                   choices => sub { network::network::netprofile_list() },
                   choice_selected => sub { $_[0] eq $net->{PROFILE} },
                   launch => sub {
		       require run_program;
		       $net->{PROFILE} = $_[0];
		       run_program::raw({ detach => 1 }, common::wrap_command_for_root('/sbin/set-netprofile', $net->{PROFILE}));
                   }
               },
               'chooseVPN' => {
                   name => N("VPN connection"),
                   header => "drakvpn",
                   choices => sub { map { $_->get_configured_connections } network::vpn::list_types },
                   allow_single_choice => 1,
                   format_choice => \&network::vpn::get_label,
                   choice_selected => sub { $_[0]->is_started },
                   launch => sub { require interactive; $_[0]->is_started ? $_[0]->stop : $_[0]->start(interactive->vnew) },
               },
               'help' => { name => N("Help"), launch => sub { system("drakhelp --id internet-connection &") } },
               'quit' => { name => N("Quit"), launch => \&mainQuit },
              );

$icon = Gtk2::StatusIcon->new;

eval { $dbus = dbus_object::system_bus() } if !defined($global_settings{NET_APPLET_DBUS}) || text2bool($global_settings{NET_APPLET_DBUS});
eval { $net->{monitor} = network::monitor->new($dbus) } if $dbus;
if ($dbus) {
    require network::net_applet::ifw;
    network::net_applet::ifw::init();
}
if ($dbus) {
    $dbus->{connection}->add_filter(sub {
        my ($_con, $msg) = @_;
            if ($msg->get_interface eq 'com.mandriva.network' && $msg->get_member eq 'status') {
                my ($status, $interface) = $msg->get_args_list;
                print "got connection status event: $status $interface\n";
                if ($status eq "add") {
                    checkNetworkForce();
                }
            }
    });
    $dbus->{connection}->add_match("type='signal',interface='com.mandriva.network'");
    dbus_object::set_gtk2_watch_helper($dbus);
}

$notification_queue = Gtk2::Notify::Queue->new($icon);

$icon->signal_connect(activate => sub {
        my ($_icon, $button, $time) = @_;
        if ($ifw_alert) {
            run_drakids();
        } elsif ($simple_menu) {
           $simple_menu->popup(undef, undef, undef, undef, $button, $time);
       } else {
            run_netcenter();
        }
    });
$icon->signal_connect(popup_menu => sub {
        my ($_icon, $button, $time) = @_;
        $menu->popup(undef, undef, undef, undef, $button, $time) if $menu;
    });

checkNetworkForce();
cronNetwork();
gtkflush(); #- for notifications to appear on the status icon position
network::net_applet::ifw::get_unprocessed_ifw_messages() if $ifw;

$SIG{HUP} = sub {
    print "received SIGHUP, reloading network configuration\n";
    checkNetworkForce();
};

Gtk2->main;

ugtk2::exit(0);

sub is_running {
    my ($name, $o_user) = @_;
    my $user = $o_user || $ENV{USER};
    any {
	my ($ppid, $pid, $n) = /^\s*(\d+)\s+(\d+)\s+(.*)/;
	$ppid != 1 && $pid != $$ && $n eq $name;
    } `ps -o '%P %p %c' -u $user`;
}
sub shouldStart() {
    my ($opt) = @ARGV;
    if ($opt eq '--force' || $opt eq '-f') {
        return 1;
    }
    return getAutoStart();
}
sub run_net_monitor() {
    run_program::raw({ detach => 1 }, '/usr/sbin/net_monitor', '--defaultintf', $current_interface) unless is_running('net_monitor');
}
sub run_netcenter() {
    run_program::raw({ detach => 1 }, '/usr/bin/draknetcenter') unless is_running('draknetcenter', 'root');
}
sub run_drakroam {
    my ($o_ap) = @_;
    run_program::raw({ detach => 1 }, '/usr/sbin/drakroam', if_($o_ap, "--ap=$o_ap")) unless is_running('drakroam', 'root');
}
sub run_drakids() {
    $ifw_alert = 0;
    if (is_running('drakids')) {
        eval { $ifw->send_manage_request };
    } else {
        run_program::raw({ detach => 1 }, '/usr/sbin/drakids');
    }
}
sub generate_wireless_menuitem {
    my ($wnet) = @_;
    my $menuitem = {};
    $menuitem->{widget} = Gtk2::CheckMenuItem->new;
    $menuitem->{widget}->set_draw_as_radio(1);
    $menuitem->{widget}->add(gtkpack_(gtkshow(gtknew('HBox')),
                                            1, gtkset_alignment($menuitem->{label} = gtknew('Label'), 0, 0.5),
                                            0, $menuitem->{strength} = Gtk2::Image->new,
                                            0, $menuitem->{security} = Gtk2::Image->new,
                                ));
    $menuitem->{activate} = $menuitem->{widget}->signal_connect('activate' => sub {
        if ($net->{monitor} && exists $wnet->{id}) {
            eval { $net->{monitor}->select_network($wnet->{id}) };
            $@ and err_dialog(N("Interactive Firewall"), N("Unable to contact daemon"));
        } else {
            run_drakroam($wnet->{ap});
        }
        checkNetworkForce();
    });
    update_wireless_item($menuitem, $wnet);
    push @{$wnet->{menuitems}}, $menuitem;
    return $menuitem->{widget};
}
sub update_wireless_item {
    my ($menuitem, $wnet) = @_;
    $menuitem->{label}->set_text($wnet->{name});
    $menuitem->{security}->set_from_pixbuf($pixbufs{encryption}{$wnet->{flags} =~ /WPA/i ? 'strong' : $wnet->{flags} =~ /WEP/i ? 'weak' : 'open'});
    $menuitem->{strength}->set_from_pixbuf(network::signal_strength::get_strength_icon($wnet));

    $menuitem->{widget}->signal_handler_block($menuitem->{activate});
    $menuitem->{widget}->set_active($wnet->{current});
    $menuitem->{widget}->signal_handler_unblock($menuitem->{activate});
}
sub checkWireless() {
    $wireless_device or return;
    my ($networks) =  network::monitor::list_wireless($net->{monitor});
    my $force_applet_update;
    foreach (keys %$networks) {
        exists $wireless_networks{$_} or $force_applet_update = 1;
        put_in_hash($wireless_networks{$_} ||= {}, $networks->{$_});
    }
    if ($force_applet_update) {
        undef $current_state;
    } else {
        foreach my $wnet (values %wireless_networks) {
            my $is_valuable = exists $networks->{$wnet->{ap}};
            foreach (@{$wnet->{menuitems}}) {
                update_wireless_item($_, $wnet) if $is_valuable;
                $_->{widget}->visible($is_valuable);
            }
        }
    }
}
sub checkNetwork() {
    my ($gw_intf, $_is_up, $gw_address) = $watched_interface ?
      ($watched_interface, network::tools::get_interface_status($watched_interface)) :
      network::tools::get_default_connection($net);
    go2State($gw_address ? 'connected' : $gw_intf ? 'disconnected' : 'unconfigured', $gw_intf);
}
sub checkNetworkForce() {
    $net = {};
    network::network::read_net_conf($net);
    undef $current_state;
    $wireless_device = detect_devices::get_wireless_interface();
    checkWireless();
    checkNetwork();
}
sub cronNetwork() {
    my $i;
    $timeout = Glib::Timeout->add(2000, sub {
        checkWireless() if !($i++%30);
        checkNetwork();
        1;
    });
}
sub go2State {
    my ($state_type, $interface) = @_;
    my $need_update;
    my ($old_interface, $old_description);
    if ($current_interface ne $interface) {
        my $card = find { $_->[0] eq $interface } network::connection::ethernet::get_eth_cards();
        if ($state_type eq 'disconnected') {
            $old_interface = $current_interface;
            $old_description = $current_description;
        }
        $current_description = $card && $card->[2];
        $current_interface = $interface;
        $need_update = 1;
    }
    if ($current_state ne $state_type) {
        my $show = defined $current_state; # don't show notification at applet startup
        $current_state = $state_type;
        $notification_queue->add({
            title => $old_description || $current_description || N("Network connection"),
            pixbuf => network::net_applet::get_state_pixbuf(),
            message => get_state_message($old_interface || $current_interface),
        }) if $show;
        $need_update = 1;
    }

    update_applet() if $need_update;
}

sub update_applet() {
    $wireless_device = detect_devices::get_wireless_interface();

    generate_menu();

    network::net_applet::update_tray_icon();
    $icon->set_tooltip(get_state_message());
}

sub create_menu_choices {
    my ($action, $o_allow_single_choice) = @_;
    my @choices =  $actions{$action}{choices}->();
    #- don't add submenu if only zero or one choice exists
    my $allow_single_choice = $actions{$action}{allow_single_choice} || $o_allow_single_choice;
    @choices > ($allow_single_choice ? 0 : 1) or return ();
    my $selected = $actions{$action}{choice_selected};
    my $format = $actions{$action}{format_choice};
    my $get_icon = $actions{$action}{get_icon};
    map {
        my $choice = $_;
        my $label = $format ? $format->($choice) : $choice;
        my $w = gtkshow(gtkset_active(gtkadd(
            Gtk2::CheckMenuItem->new,
            gtknew('HBox', children => [
                     1, gtkset_alignment(gtknew('Label', text => $label), 0, 0.5),
                     $get_icon ?
                       (0, gtknew('Image', file => $get_icon->($_))) :
                         (),
                 ])), $selected->($choice)));
        gtksignal_connect($w, activate => sub { $actions{$action}{launch}->($choice) });
        $w->set_draw_as_radio(!$actions{$action}{use_checkbox});
        $w;
    } $actions{$action}{choices}->();
}

sub create_action_item {
    my ($action) = @_;
    my $name = ref($actions{$action}{name}) eq 'CODE' ? $actions{$action}{name}->($current_interface) : $actions{$action}{name};
    if (exists $actions{$action}{choices}) {
        my @menu = create_menu_choices($action);
        @menu || $actions{$action}{header} or return ();
        gtkshow(create_menu($name,
                            $actions{$action}{header} ? (
                                create_action_item($actions{$action}{header}),
                                gtkshow(Gtk2::SeparatorMenuItem->new),
                            ) : (),
                            @menu,
                        ));
    } else {
        gtksignal_connect(gtkshow(Gtk2::MenuItem->new_with_label($name)), activate => sub { $actions{$action}{launch}->($current_interface) });
    }
}

sub empty_menu {
    my ($menu) = @_;
    delete $_->{menuitems} foreach values %wireless_networks;
    $menu->destroy if $menu;
    Gtk2::Menu->new;
}

sub get_wireless_networks_sorted() {
    sort {
        $b->{current} <=> $a->{current} || $b->{signal_strength} <=> $a->{signal_strength} || $a->{name} cmp $b->{name};
    } values %wireless_networks;
}

sub generate_simple_menu() {
    $simple_menu = empty_menu($simple_menu);

    if ($wireless_device) {
        my @networks = get_wireless_networks_sorted();
        my @valuable_networks = splice @networks, 0, 7;
        gtkappend($simple_menu,
                  (map { generate_wireless_menuitem($_) } @valuable_networks),
                  (@networks ? create_menu(N("More networks"), map { generate_wireless_menuitem($_) } @networks) : ()),
                  Gtk2::SeparatorMenuItem->new,
              );
    }
    gtkappend($simple_menu, create_menu_choices('setInterface', 'allow_single_choice'));
}

sub generate_menu() {
    $menu = empty_menu($menu);

    my (@settings);
    my $interactive;
    eval { $interactive = $ifw->get_interactive };

    if ($current_state eq 'connected') {
        $menu->append(create_action_item($_)) foreach qw(downNetwork monitorNetwork);
    } elsif ($current_state eq 'disconnected') {
        $menu->append(create_action_item('upNetwork'));
    }
    $menu->append(create_action_item('monitorIFW')) if $current_state ne 'unconfigured' && defined $interactive;

    $menu->append(create_action_item('confNetwork'));

    push @settings, create_action_item('chooseInterface') if $current_state ne 'unconfigured';

    push @settings, create_action_item('chooseProfile');
    if (defined $interactive) {
        $interactive_cb = gtkshow(gtksignal_connect(gtkset_active(Gtk2::CheckMenuItem->new_with_label(N("Interactive Firewall automatic mode")),
                                                                  !$interactive),
                                                    toggled => sub { eval { $ifw->set_interactive(to_bool(!$_[0]->get_active)) } }));
        push @settings, $interactive_cb;
    }
    push @settings, gtkshow(gtksignal_connect(gtkset_active(Gtk2::CheckMenuItem->new_with_label(N("Always launch on startup")), getAutoStart()),
                                              toggled => sub { setAutoStart(uc(bool2text($_[0]->get_active))) }));

    $menu->append(gtkshow(Gtk2::SeparatorMenuItem->new));
    if ($current_state ne 'unconfigured' && $wireless_device) {
        $menu->append(gtkshow(create_menu(N("Wireless networks"),
                                          create_action_item('wireless'),
                                          gtkshow(Gtk2::SeparatorMenuItem->new),
                                          map { generate_wireless_menuitem($_) } get_wireless_networks_sorted())));
    }
    if (my $vpn = create_action_item('chooseVPN')) { $menu->append($vpn) }
    if (my $set = $current_state ne 'unconfigured' && create_action_item('setInterface')) { $menu->append($set) }
    $menu->append(gtkshow(create_menu(N("Settings"), @settings)));
    $menu->append(gtkshow(Gtk2::SeparatorMenuItem->new));
    $menu->append(create_action_item('help'));
    $menu->append(create_action_item('quit'));
    $menu;
}
sub mainQuit() {
     Glib::Source->remove($timeout) if $timeout;
     Glib::Source->remove($update_timeout) if $update_timeout;
     Gtk2->main_quit;
}
sub getAutoStart() {
    my %p = getVarsFromSh($onstartupfile);
    return to_bool($p{AUTOSTART} ne 'FALSE');
}
sub setAutoStart {
    my $state = shift;
    output_p $onstartupfile,
    qq(AUTOSTART=$state
);
}