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#!/usr/bin/perl

package Postfixconf;
require "__WIZ_HOME__/common/scripts/Vareqval.pm";
require "__WIZ_HOME__/common/scripts/IFCFG.pm";
use MDK::Common;
use strict;

my $o = IFCFG->new();
my $wiz_domain_name = $o->network_get("DOMAINNAME");
my $wiz_host_name = $o->network_get("HOSTNAME");

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

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

sub	do_it {
    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 = $wiz_host_name.$wiz_domain_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 = $ENV{wiz_ext_mail_relay}"
	     );
    foreach (@conf) {
	system("postconf -e \'$_\'");
    }
    if (defined $ENV{wiz_ext_mail_relay}) {
	my $file = "/etc/postfix/canonical";
	my $canon = "\n\@$wiz_domain_name $ENV{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("postmap /etc/postfix/canonical");
    system("postmap /etc/postfix/virtual");
    system("postalias /etc/postfix/aliases");
    system("postfix check");
    system("service postfix restart");
    system("service xinetd restart");
    10;
}

1;