#!/usr/bin/perl

=head1 enable-feature.pl

Turn on some features for a virtual server

To enable features for one or more servers from the command line, use this
program. The features to enable can be specified in the same way as the
C<create-domain> program, such as C<--web>, C<--dns> and C<--virtualmin-svn>. The
servers to effect can either individually specified with the C<--domain> option
(which can occur multiple times), or with C<--all-domains> to update all virtual
server.

When updating multiple servers, this program may take some time to run due to
the amount of work it needs to do. However, the progress of each server and
step will be shown as it runs.

If the C<--associate> flag is given, this command will simply make Virtualmin
assume that the underlying configuration changes or databases have been
already created. This reverses the effect of the C<--disassociate> flag to
the C<disable-feature> API command.

=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/enable-feature.pl";
	require './virtual-server-lib.pl';
	$< == 0 || die "enable-feature.pl must be run as root";
	}
@OLDARGV = @ARGV;
&set_all_text_print();

# Parse command-line args
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 eq "--user") {
		push(@users, shift(@ARGV));
		}
	elsif ($a eq "--associate") {
		$associate = 1;
		}
	elsif ($a =~ /^--(\S+)$/ &&
	       &indexof($1, @features) >= 0) {
		$config{$1} || &usage("The $a option cannot be used unless the feature is enabled in the module configuration");
		$feature{$1}++;
		}
	elsif ($a =~ /^--(\S+)$/ &&
	       &indexof($1, &list_feature_plugins()) >= 0) {
		$plugin{$1}++;
		}
	elsif ($a eq "--skip-warnings") {
		$skipwarnings = 1;
		}
	elsif ($a eq "--multiline") {
		$multiline = 1;
		}
	elsif ($a eq "--help") {
		&usage();
		}
	else {
		&usage("Unknown parameter $a");
		}
	}
@dnames || $all_doms || @users || usage("No domains or users specified");

# Get domains to update
if ($all_doms) {
	@doms = &list_domains();
	}
else {
	# Get domains by name and user
	@doms = &get_domains_by_names_users(\@dnames, \@users, \&usage);
	}

# Do it for all domains, non-aliases first
$failed = 0;
DOMAIN:
foreach $d (sort { ($a->{'alias'} ? 2 : $a->{'parent'} ? 1 : 0) <=>
		   ($b->{'alias'} ? 2 : $b->{'parent'} ? 1 : 0) } @doms) {
	&$first_print("Updating server $d->{'dom'} ..");

	# Check for various clashes
	%newdom = %$d;
	$oldd = { %$d };
	my $f;
	foreach $f (&list_ordered_features(\%newdom)) {
		if ($feature{$f} || $plugin{$f}) {
			$newdom{$f} = 1;
			if (!$d->{$f}) {
				$check{$f}++;
				}
			}
		}
	&set_chained_features(\%newdom, $d);
	$derr = &virtual_server_depends(\%newdom, undef, $oldd);
	if ($derr) {
		&$second_print(".. dependency checks failed : $derr");
		$failed = 1;
		next;
		}
	if (!$associate) {
		$cerr = &virtual_server_clashes(\%newdom, \%check);
		if ($cerr) {
			&$second_print(".. clash detected : $cerr");
			$failed = 1;
			next;
			}
		}

	# Make sure plugins are suitable
	$parentdom = $d->{'parent'} ? &get_domain($d->{'parent'}) : undef;
	$aliasdom = $d->{'alias'} ? &get_domain($d->{'alias'}) : undef;
	$subdom = $d->{'sub'} ? &get_domain($d->{'subdom'}) : undef;
	foreach my $f (keys %plugin) {
		if ($check{$f} && !&plugin_call($f, "feature_suitable",
                                        $parentdom, $aliasdom, $subdom)) {
			&$second_print(".. the feature $f cannot be enabled for this type of virtual server");
			$failed = 1;
			next DOMAIN;
			}
		}

	# Check for warnings
	@warns = &virtual_server_warnings(\%newdom, $oldd);
	if (@warns) {
		foreach my $w (@warns) {
			&$first_print("Warning: $w");
			}
		if (!$skipwarnings) {
			&$second_print(".. this virtual server will not be updated unless the --skip-warnings flag is given");
			$failed = 1;
			next;
			}
		}

	# Run the before command
	&set_domain_envs($d, "MODIFY_DOMAIN", \%newdom);
	$merr = &making_changes();
	&reset_domain_envs($d);
	if (defined($merr)) {
		&$second_print(&text('save_emaking', "<tt>$merr</tt>"));
		$failed = 1;
		next;
		}

	# Do it!
	&$indent_print();
	foreach $f (&list_ordered_features($d)) {
		$d->{$f} = $newdom{$f};
		}
	if (!$associate) {
		foreach $f (&list_ordered_features($d)) {
			&call_feature_func($f, $d, $oldd);
			}
		}

	# Save new domain details
	&save_domain($d);

	# Run the after command
	&set_domain_envs($d, "MODIFY_DOMAIN", undef, $oldd);
	local $merr = &made_changes();
	&$second_print(&text('setup_emade', "<tt>$merr</tt>"))
		if (defined($merr));
	&reset_domain_envs($d);

	if ($d->{'parent'}) {
		&refresh_webmin_user($d);
		}

	&$outdent_print();
	&$second_print(".. done");
	}

&run_post_actions();
&virtualmin_api_log(\@OLDARGV);
exit($failed);

sub usage
{
print "$_[0]\n\n" if ($_[0]);
print "Enables features for one or more domains specified on the command line.\n";
print "\n";
print "virtualmin enable-feature --domain name | --user name | --all-domains\n";
print "                         [--associate]\n";
foreach $f (@features) {
	print "                         [--$f]\n" if ($config{$f});
	}
foreach $f (&list_feature_plugins()) {
	print "                         [--$f]\n";
	}
print "                         [--skip-warnings]\n";
exit(1);
}