# 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 IDNA::Punycode";
if (!$@) {
$name = join(".",
map { decode_punycode($_) } split(/\./, $name));
if ($ENV{'MINISERV_CONFIG'} && &get_charset() eq 'UTF-8') {
eval "utf8::encode(\$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 IDNA::Punycode";
eval "utf8::decode(\$name)";
if (!$@) {
$name = join(".",
map { encode_punycode($_) } split(/\./, $name));
# IDNA::Punycode gets this wrong
$name =~ s/^xn---([^\-])/xn--$1/g;
$name =~ s/\.xn---([^\-])/\.xn--$1/g;
}
}
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 $text{'setup_edomain2'};
if ($name =~ /^(www)\./i) {
return &text('setup_edomainprefix', "$1");
}
return undef;
}
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