#!/usr/bin/perl
=head1 modify-spam.pl
Change spam filtering and delivery settings for a virtual server
This command can be used to change the location than email tagged as spam or
virus-laden is delivered to for one or more virtual servers. The servers to act
on can be either specified with the C<--domain> parameter, or all domains with
spam filtering enabled can be selected with C<--all-domains>.
The following parameters control what happens to messages identified as spam :
C<--spam-delete> Delete all spam mail.
C<--spam-deliver> Deliver to user's mailbox normally.
C<--spam-mailfile> Write to user's C<~/mail/spam> file in mbox format.
C<--spam-maildir> Write to user's C<~/Maildir/.spam> file in Maildir format.
C<--spam-file> Write to the file following this parameter, which must be relative to the user's home directory.
C<--spam-email> Forward to the email address following this parameter.
C<--spam-dest> Write to the absolute file following the parameter.
A similar set of options exist for virus filtering, but starting with C<--virus>
instead of C<--spam>.
Virtualmin has the ability to delete spam from the spam folders of all users
in a domain once it passes some threshold, such as age or size. You can
enable this with the C<--spamclear-days> parameter followed by the maximum
age in days, or C<--spamclear-size> followed by a size in bytes. Or to turn
off spam deletion, use the C<--spamclear-none> parameter.
Similarly you can enable automatic deletion from trash folders with the
C<--trashclear-days> parameter followed by the maximum age in days, or
C<--trashclear-size> followed by a size in bytes. Or to turn off trash
deletion, use the C<--trashclear-none> parameter.
SpamAssassin gives each message it scans a numeric score, and typically anything
above 5 is considered spam and placed in a separate user folder. However, you
can choose to simply delete all incoming spam with a score above some higher
threshold (such as 10) using the C<--spam-delete-level> parameter, which must
be followed by a number. To turn this behaviour off again, use the
C<--spam-no-delete-level> flag.
To enable the spamtrap and hamtrap aliases for the selected virtual servers,
you can use the C<--spamtrap> command-line flag. Similarly, to remove them
use the C<--no-spamtrap> flag. When enabled, users will be able to forward
spam to spamtrap@theirdomain.com for adding to the domain's blacklist.
=cut
package virtual_server;
if (!$module_name) {
$main::no_acl_check++;
$ENV{'WEBMIN_CONFIG'} ||= "/etc/webmin";
$ENV{'WEBMIN_VAR'} ||= "/var/webmin";
if ($0 =~ /^(.*)\/[^\/]+$/) {
chdir($pwd = $1);
}
else {
chop($pwd = `pwd`);
}
$0 = "$pwd/modify-spam.pl";
require './virtual-server-lib.pl';
$< == 0 || die "modify-spam.pl must be run as root";
}
@OLDARGV = @ARGV;
$config{'spam'} || &usage("Spam filtering is not enabled for Virtualmin");
&set_all_text_print();
# Parse command-line args
$spamlevel = undef;
$auto = { };
while(@ARGV > 0) {
local $a = shift(@ARGV);
if ($a eq "--domain") {
push(@dnames, shift(@ARGV));
}
elsif ($a eq "--all-domains") {
$all_doms = 1;
}
elsif ($a =~ /^--(spam|virus)-delete$/) {
$mode{$1} = 0;
}
elsif ($a =~ /^--(spam)-deliver$/) {
$mode{$1} = 5;
}
elsif ($a =~ /^--(spam|virus)-(normal|mailfile)$/) {
$m = $1;
$mode{$m} = 4;
if (@ARGV && $ARGV[0] !~ /^-/) {
$dest{$m} = shift(@ARGV);
}
}
elsif ($a =~ /^--(spam|virus)-maildir$/) {
$m = $1;
$mode{$m} = 6;
if (@ARGV && $ARGV[0] !~ /^-/) {
$dest{$m} = shift(@ARGV);
}
}
elsif ($a =~ /^--(spam|virus)-file$/) {
$mode{$1} = 1;
$dest{$1} = shift(@ARGV);
$dest{$1} =~ /\S/ && $dest{$1} !~ /\.\./ &&
$dest{$1} !~ /^\// ||
&usage("The $a option must be followed by a relative filename");
}
elsif ($a =~ /^--(spam|virus)-email$/) {
$mode{$1} = 2;
$dest{$1} = shift(@ARGV);
$dest{$1} =~ /\@/ || &usage("The $a option must be followed by an email address");
}
elsif ($a =~ /^--(spam|virus)-dest$/) {
$mode{$1} = 3;
$dest{$1} = shift(@ARGV);
$dest{$1} =~ /\S/ || &usage("The $a option must be followed by a mail file path");
}
elsif ($a eq "--spam-whitelist") {
$spam_white = 1;
}
elsif ($a eq "--no-spam-whitelist") {
$spam_white = 0;
}
elsif ($a =~ /^--use-(spamc|spamassassin)$/) {
$spam_client = $1;
}
elsif ($a eq "--spamclear-none") {
$auto->{'days'} = $auto->{'size'} = undef;
}
elsif ($a eq "--spamclear-days") {
$auto->{'days'} = shift(@ARGV);
$auto->{'days'} =~ /^\d+$/ ||
&usage("The $a option must be followed by a number of days");
$auto->{'size'} = undef;
}
elsif ($a eq "--spamclear-size") {
$auto->{'size'} = shift(@ARGV);
$auto->{'size'} =~ /^\d+$/ ||
&usage("The $a option must be followed by a size in bytes");
$auto->{'days'} = undef;
}
elsif ($a eq "--trashclear-none") {
$auto->{'trashdays'} = $auto->{'trashsize'} = undef;
}
elsif ($a eq "--trashclear-days") {
$auto->{'trashdays'} = shift(@ARGV);
$auto->{'trashdays'} =~ /^\d+$/ ||
&usage("The $a option must be followed by a number of days");
$auto->{'trashsize'} = undef;
}
elsif ($a eq "--trashclear-size") {
$auto->{'trashsize'} = shift(@ARGV);
$auto->{'trashsize'} =~ /^\d+$/ ||
&usage("The $a option must be followed by a size in bytes");
$auto->{'trashdays'} = undef;
}
elsif ($a eq "--spam-delete-level") {
$spamlevel = shift(@ARGV);
$spamlevel =~ /^[1-9]\d*$/ ||
&usage("--spam-delete-level must be followed by a number");
}
elsif ($a eq "--spam-no-delete-level") {
$spamlevel = 0;
}
elsif ($a =~ /^--use-(clamscan|clamdscan)$/) {
$virus_scanner = $1;
}
elsif ($a eq "--spamtrap") {
$spamtrap = 1;
}
elsif ($a eq "--no-spamtrap") {
$spamtrap = 0;
}
elsif ($a eq "--multiline") {
$multiline = 1;
}
else {
&usage("Unknown parameter $a");
}
}
@dnames || $all_doms || usage("No domains specified");
defined($mode{'spam'}) || defined($mode{'virus'}) || $spam_client ||
$virus_scanner || defined($auto) || defined($spamlevel) ||
defined($spamtrap) || &usage("Nothing to do");
# Get domains to update
if ($all_doms) {
@doms = grep { $_->{'spam'} } &list_domains();
}
else {
foreach $n (@dnames) {
$d = &get_domain_by("dom", $n);
$d || &usage("Domain $n does not exist");
$d->{'spam'} || &usage("Virtual server $n does not have spam filtering enabled");
push(@doms, $d);
}
}
# Do it for all domains
foreach $d (@doms) {
&$first_print("Updating server $d->{'dom'} ..");
&obtain_lock_spam($d);
&obtain_lock_cron($d);
&obtain_lock_mail($d);
&$indent_print();
if ($config{'spam'} && $d->{'spam'} &&
(defined($mode{'spam'}) || defined($spamlevel))) {
&save_domain_spam_delivery($d, $mode{'spam'}, $dest{'spam'},
$spamlevel, undef);
}
if ($config{'virus'} && $d->{'virus'} && defined($mode{'virus'})) {
&save_domain_virus_delivery($d, $mode{'virus'}, $dest{'virus'});
}
if ($config{'spam'} && $d->{'spam'} && $spam_client) {
&save_domain_spam_client($d, $spam_client);
&modify_webmin($d, $d);
}
if (defined($spam_white)) {
if (&get_domain_spam_client($d) eq "spamc") {
&$second_print(".. whitelist cannot be configured ".
"spamc is in use");
}
else {
$d->{'spam_white'} = $spam_white;
&update_spam_whitelist($d);
&save_domain($d);
}
}
if (keys %$auto) {
my $oldauto = &get_domain_spam_autoclear($d);
foreach my $k (keys %$auto) {
$oldauto->{$k} = $auto->{$k};
}
&save_domain_spam_autoclear($d, $oldauto);
}
if (defined($virus_scanner)) {
&save_domain_virus_scanner($d, $virus_scanner);
}
if (defined($spamtrap)) {
$st = &get_spamtrap_aliases($d);
if ($st < 0) {
&$first_print("Spam trap aliases already exist");
}
elsif ($st && !$spamtrap) {
&$first_print("Removing spam trap aliases ..");
$err = &delete_spamtrap_aliases($d);
&$second_print($err ? ".. failed : $err" : ".. done");
}
elsif (!$st && $spamtrap) {
&$first_print("Adding spam trap aliases ..");
$err = &setup_spamtrap_aliases($d);
&$second_print($err ? ".. failed : $err" : ".. done");
}
}
&$outdent_print();
&release_lock_mail($d);
&release_lock_spam($d);
&release_lock_cron($d);
&$second_print(".. done");
}
&run_post_actions();
&virtualmin_api_log(\@OLDARGV);
sub usage
{
print "$_[0]\n\n" if ($_[0]);
print "Changes the spam and virus delivery modes for one or more domains.\n";
print "\n";
print "virtualmin modify-spam --domain name | --all-domains\n";
print " [--spam-delete | --spam-deliver |\n";
print " --spam-mailfile [folder] |\n";
print" --spam-file file-under-home |\n";
print " --spam-email address | --spam-dest file |\n";
print " --spam-maildir [folder] ]\n";
print " [--spam-delete-level score | --spam-no-delete-level]\n";
print " [--virus-delete |\n";
print " --virus-mailfile [folder] |\n";
print " --virus-file file-under-home |\n";
print " --virus-email address | --virus-dest file\n";
print " --virus-maildir [folder] ]\n";
print " [--spam-whitelist | --no-spam-whitelist]\n";
print " [--use-spamassassin | --use-spamc]\n";
print " [--spamclear-none |\n";
print " --spamclear-days days\n";
print " --spamclear-size bytes]\n";
print " [--trashclear-none |\n";
print " --trashclear-days days\n";
print " --trashclear-size bytes]\n";
print " [--use-clamscan | --use-clamdscan]\n";
print " [--spamtrap | --no-spamtrap]\n";
print "\n";
print "Warning - modifying the SpamAssassin or virus scanning client for\n";
print "individual domains is deprecated.\n";
exit(1);
}
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