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Dir : ~/usr/share/webmin/virtual-server/
View File Name : domainname-lib.pl

# Functions for checking and manipulating domain names. Used by both Virtualmin
# and Cloudmin.

# shorten_domain_name(&dom)
# Returns a domain name shorten to the display max
sub shorten_domain_name
{
my ($d) = @_;
my $show = &show_domain_name($d->{'showdom'} || $d->{'dom'});

# Split into characters, some of which may be HTML entities that are multiple
# letters in the string (like &foo; or 7) but appear as one letter
my @chars;
my $tosplit = $show;
if ($tosplit =~ /\&|;/) {
	while($tosplit =~ s/^(\&[^;]+;)// ||
	      $tosplit =~ s/^(.)//) {
		push(@chars, $1);
		}
	}
else {
	@chars = split(//, $tosplit);
	}

my $rv;
if ($config{'name_max'} && scalar(@chars) > $config{'name_max'}+3) {
	if ($config{'name_mode'}) {
		# Cut off chars at end, replace with ..
		$rv = join("", @chars[0..$config{'name_max'}])."...";
		}
	else {
		# Show first and last max/2 chars, with ... between.
		my $s = int($config{'name_max'} / 2);
		$rv = join("", @chars[0 .. $s-1])."...".
		      join("", @chars[$#chars-$s .. $#chars]);
		}
	}
else {
	$rv = $show;
	}
$rv =~ s/ / /g;
return $rv;
}

# show_domain_name(&dom|dname, [1-never,0-auto,2-always])
# Converts a domain name to human-readable form for display. Currently this
# takes IDN encoding into account
sub show_domain_name
{
my $name = ref($_[0]) ? $_[0]->{'dom'} : $_[0];
my $mode = $_[1];
my $spacer;
if ($name =~ s/^(\s+)//) {
	$spacer = $1;
	}
my $utf8;
if (!$ENV{'MINISERV_CONFIG'} && $mode == 0) {
	# Check if STDOUT supports utf-8 output
	eval "use PerlIO";
	if (!$@) {
		foreach my $l (PerlIO::get_layers(STDOUT)) {
			$utf8++ if ($l =~ /utf8/);
			}
		}
	}
my $convert = $mode == 2 ||
	      $mode == 0 && ($ENV{'MINISERV_CONFIG'} || $utf8);
if (($name =~ /^xn--/ || $name =~ /\.xn--/) && $convert) {
	# Convert xn-- parts to unicode
	push(@INC, $module_root_directory)
		if (&indexof($module_root_directory, @INC) < 0);
	eval "use Net::LibIDN2";
	if (!$@) {
		$name = Net::LibIDN2::idn2_to_unicode_88($name);
		if ($ENV{'MINISERV_CONFIG'}) {
			# In browser, so convert to entity format for HTML
			my $ename;
			foreach my $c (split(//, $name)) {
				my $o = ord($c);
				$ename .= $o > 255 ? "&#$o;" : $c;
				}
			$name = $ename;
			}
		}
	}
return $spacer.$name;
}

# parse_domain_name(input)
# Returns an IDN-encoding domain name, where needed
sub parse_domain_name
{
my $name = &entities_to_ascii($_[0]);
$name =~ s/^\s+//;	# Strip leading and trailing spaces from user input
$name =~ s/\s+$//;
if ($name !~ /^[a-z0-9\.\-\_]+$/i) {
	# Convert unicode to xn-- format
	eval "use Net::LibIDN2";
	$name = Net::LibIDN2::idn2_lookup_u8($name) if (!$@);
	}
return $name;
}

# valid_domain_name(input)
# Returns an error message if a domain name is not valid, undef if OK.
# Expects parse_domain_name to have been already called.
sub valid_domain_name
{
my ($name) = @_;
$name =~ /^\*\./ && return $text{'setup_edomainstar'};
$name =~ /^[A-Za-z0-9\.\-_]+$/ || return $text{'setup_edomain'};
$name =~ /^\./ && return $text{'setup_edomain2'};
$name =~ /\.$/ && return $text{'setup_edomain2'};
$name =~ /\.\./ && return $text{'setup_edomain3'};
if ($name =~ /^(www)\./i) {
	return &text('setup_edomainprefix', "$1");
	}
&check_ipaddress($name) && return $text{'setup_edomainip'};
return undef;
}

1;