#!/usr/bin/perl

# Drakwizard

# Copyright (C) 2002 Arnaud Desmons <adesmons@mandrakesoft.com>
#               2003 Florent Villard <warly@mandrakesoft.com>
#
# 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.

package MDK::Wizard::Postfix;
use strict;
use lib qw(/usr/lib/libDrakX); # required for service package

use common;
use MDK::Wizard::Wizcommon;

my $wiz = new MDK::Wizard::Wizcommon;
my $wiz_domain_name = $wiz->{net}->network_get("DOMAINNAME");
my $wiz_host_name = $wiz->{net}->network_get("HOSTNAME");

my $o = { 
    name => 'Postfix wizard',
	var => { 
	    wiz_mail_masquerade => '',
	    wiz_ext_mail_relay => ''
	},
	needed_rpm => [ 'postfix' ],
	defaultimage => "$ENV{__WIZ_HOME__}postfix_wizard/images/courrier.png"
    };

$o->{pages} = { 
	  welcome => {
	      name => N("Internet Mail Configuration Wizard") . "\n\n" . N("This wizard will help you configuring the Internet Mail services for your network."),
	  no_back => 1,
          next => 'config'
      },
      config => {
          name => N("Outgoing Mail Address") . "\n\n" . N('You can select the kind of address that outgoing mail will show in the "From:" and "Reply-to" field.') . "\n\n" . N("This should be chosen consistently with the address you use for incoming mail."),
          pre => sub {
		$o->{var}{wiz_mail_masquerade} ||= get_mail_masquerade();
	  },
	  post => \&check_masquerade,
          data => [
	      { label => N("Masquerade domain name:"),  val => \$o->{var}{wiz_mail_masquerade} },
	      ],
          next => 'isp'
      },
      warning => {
	name => N("Warning:") . "\n\n" . N("You entered an empty address for the mail gateway.") . "\n\n" . N("Your choice can be accepted, but this will not allow you to send mail outside your local network. Press next to continue, or back to enter a value."),
        next => 'summary'
      },
      masquerade_not_good => {
	name => N("Error.") . "\n\n" . N("Masquerade not good!"),
        next => 'config'
      },
      isp => {
          name => N("Internet Mail Gateway") . "\n\n" . N('Your server will send the outgoing through a mail gateway, that will take care of the final delivery.') . "\n\n" . N('Internet host names must be in the form "host.domain.domaintype"; for example, if your provider is "provider.com", the internet mail server is usually "smtp.provider.com".'),
          pre => sub {
		$o->{var}{wiz_ext_mail_relay} ||= get_mail_relay();
	  },
	  post => \&check_relay,
          data => [
	      { label => N("Mail Server Name:"),  val => \$o->{var}{wiz_ext_mail_relay} },
	      ],
          next => 'summary'
      },
      summary => {
        name =>  N("Configuring the Internet Mail") . "\n\n" . N("The wizard collected the following parameters needed to configure your Internet Mail Service:") . "\n\n" . N("To accept these values, and configure your server, click the Next button or use the Back button to correct them."),
        data => [
	      { label => N("Internet Mail Gateway"), fixed_val => \$o->{var}{wiz_ext_mail_relay} },
	      { label => N("Form of the Address"), fixed_val => \$o->{var}{wiz_mail_masquerade} },
	  ],
	post => \&do_it,
        next => 'end'
      },
      end => { 
        name => N("Congratulations") . "\n\n" . N("The wizard successfully configured your Internet Mail service of your server."), 
	end => 1,
        next => 0
  },
};

sub new {
    my ($class, $_conf) = @_;
    bless {
	    o   => $o,
       }, $class;
}

sub check_masquerade {
    $o->{var}{wiz_mail_masquerade} or return 'masquerade_not_good';
    $o->{var}{wiz_mail_masquerade} =~ /\w+\.\w+$/ or return 'masquerade_not_good';
}

sub check_relay {
    $o->{var}{wiz_ext_mail_relay} or return 'warning';
    $o->{var}{wiz_ext_mail_relay} =~ /(\S+)\.(\S+)$/ or return 'warning';
}

sub get_mail_masquerade {
    my $relayhost = `/usr/sbin/postconf -h relayhost`;
    chomp($relayhost);
    ($relayhost) = $relayhost =~ /.*\.(.*\..*)/;
    !length $relayhost and $relayhost = $wiz_domain_name;
    $relayhost
}

sub get_mail_relay {
    my $relayhost = `/usr/sbin/postconf -h relayhost`;
    chomp $relayhost;
    !length $relayhost and $relayhost = "smtp.$wiz_domain_name";
    $relayhost;
}

sub do_it {
    $::testing and return
    my @conf = qw(/etc/postfix/aliases
		  /etc/postfix/canonical
		  /etc/postfix/main.cf
		  /etc/postfix/master.cf
		  /etc/postfix/virtual);
    foreach (@conf) {
        -f $_ and MDK::Common::cp_af($_, $_.".orig");
    }
    @conf = ("myhostname = $wiz_host_name",
	     'myorigin = $mydomain',
	     'inet_interfaces = all',
	     'mydestination = $myhostname, localhost.$mydomain',
	     'masquerade_domains = $mydomain',
	     'alias_maps = hash:/etc/postfix/aliases',
	     'alias_database = hash:/etc/postfix/aliases',
	     'virtual_maps = hash:/etc/postfix/virtual',
	     'canonical_maps = hash:/etc/postfix/canonical',
	     "relayhost = $o->{var}{wiz_ext_mail_relay}"
	     );
    foreach (@conf) {
	system("/usr/sbin/postconf -e '$_'");
    }
    if (defined $o->{var}{wiz_ext_mail_relay}) {
	my $file = "/etc/postfix/canonical";
	my $canon = "\n\@$wiz_domain_name $o->{var}{wiz_mail_masquerade}";
	my $t;
	foreach (cat_($file)) {
	    if (/^\s*(?!#)\s*\@$wiz_domain_name/) {
		$t = $_;
		last;
	    }
	}
	if ($t) { substInFile { s|$t|#$&$canon| } $file } 
	else { append_to_file($file, $canon) }
    }
    system("/usr/sbin/postmap /etc/postfix/canonical");
    system("/usr/sbin/postmap /etc/postfix/virtual");
    system("/usr/sbin/postalias /etc/postfix/aliases");
    system("/usr/sbin/postfix check");
    require services;
    if (services::is_service_running('postfix')) {
	services::restart('postfix') 
    } else {
        services::start('postfix')
    }
    services::is_service_running('xinetd') and services::restart('xinetd');
}

1;