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# Check some DNS server
sub get_dns_status
{
if (&has_command("dig")) {
local $out;
&execute_command("dig \@".quotemeta($_[0]->{'server'})." ".
quotemeta($_[0]->{'host'}), undef, \$out, \$out);
return $out =~ /\Q$_[0]->{'host'}.\E\s+\S+\s+IN\s+A\s+\Q$_[0]->{'address'}\E/ ? { 'up' => 1 } : { 'up' => 0 };
}
elsif (&has_command("nslookup")) {
local $out;
local $cmd = "server $_[0]->{'server'}\n$_[0]->{'host'}\n";
&execute_command("nslookup", \$cmd, \$out, \$out);
return $out =~ /\Q$_[0]->{'address'}\E/ ? { 'up' => 1 }
: { 'up' => 0 };
}
else {
return { 'up' => - 1 };
}
}
sub show_dns_dialog
{
print &ui_table_row($text{'dns_server'},
&ui_textbox("server", $_[0]->{'server'}, 30));
print &ui_table_row($text{'dns_host'},
&ui_textbox("host", $_[0]->{'host'}, 30));
print &ui_table_row($text{'dns_address'},
&ui_textbox("address", $_[0]->{'address'}, 30));
}
sub parse_dns_dialog
{
&has_command("nslookup") || &has_command("dig") ||
&error($text{'dns_ecmds'});
&to_ipaddress($in{'server'}) || &to_ip6address($in{'server'}) ||
&error($text{'dns_eserver'});
$_[0]->{'server'} = $in{'server'};
$in{'host'} =~ /^[a-z0-9\.\-\_]+$/i || &error($text{'dns_ehost'});
$_[0]->{'host'} = $in{'host'};
&check_ipaddress($in{'address'}) || &error($text{'dns_eaddress'});
$_[0]->{'address'} = $in{'address'};
}