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# ftp-monitor.pl
# Monitor a remote FTP server by doing a test download
sub get_ftp_status
{
local $up = 0;
local $st = time();
local $error;
local $temp = &transname();
eval {
local $SIG{ALRM} = sub { die "alarm\n" }; # NB: \n required
alarm($_[0]->{'alarm'} ? $_[0]->{'alarm'} : 10);
if ($_[0]->{'tls'}) {
# Connect using TLS-capable perl module
eval "use Net::FTPSSL";
my $ftps;
eval { $ftps = Net::FTPSSL->new($_[0]->{'host'},
Port => $_[0]->{'port'} || 21) };
if ($@) {
$error = &text('ftp_econn2', &html_escape($@));
return 0;
}
elsif (!$ftps) {
$error = $text{'ftp_econn'};
return 0;
}
# Login with username and password, or anonymous
my $ok;
if ($_[0]->{'user'}) {
$ok = $ftps->login($_[0]->{'user'}, $_[0]->{'pass'});
}
else {
$ok = $ftps->login("anonymous",
"root\@".&get_system_hostname());
}
if (!$ok) {
$error = &text('ftp_elogin', $ftps->last_message);
return 0;
}
# Get the file
if ($_[0]->{'file'}) {
$ok = $ftps->get($_[0]->{'file'}, $temp);
if (!$ok) {
$error = &text('ftp_etlsfile',
$ftps->last_message);
return 0;
}
}
$ftps->quit();
}
else {
# Use Webmin's built in FTP code
&ftp_download($_[0]->{'host'}, $_[0]->{'file'}, $temp, \$error,
undef, $_[0]->{'user'}, $_[0]->{'pass'},
$_[0]->{'port'});
}
alarm(0);
$up = $error ? 0 : 1;
};
if ($@) {
die unless $@ eq "alarm\n"; # propagate unexpected errors
return { 'up' => 0 };
}
else {
return { 'up' => $up, 'time' => time() - $st,
'desc' => $up ? undef : $error };
}
}
sub show_ftp_dialog
{
print &ui_table_row($text{'ftp_host'},
&ui_textbox("host", $_[0]->{'host'}, 30));
print &ui_table_row($text{'ftp_port'},
&ui_textbox("port", $_[0]->{'port'} || 21, 5));
print &ui_table_row($text{'ftp_user'},
&ui_opt_textbox("ftpuser", $_[0]->{'user'}, 15, $text{'ftp_anon'}));
print &ui_table_row($text{'ftp_pass'},
&ui_password("ftppass", $_[0]->{'pass'}, 15));
print &ui_table_row($text{'ftp_file'},
&ui_opt_textbox("file", $_[0]->{'file'}, 50, $text{'ftp_none'}), 3);
print &ui_table_row($text{'http_alarm'},
&ui_opt_textbox("alarm", $_[0]->{'alarm'}, 5, $text{'default'}));
print &ui_table_row($text{'ftp_tls'},
&ui_yesno_radio("tls", $_[0]->{'tls'}));
}
sub parse_ftp_dialog
{
$in{'host'} =~ /^[a-z0-9\.\-\_]+$/i || &error($text{'ftp_ehost'});
$_[0]->{'host'} = $in{'host'};
$in{'port'} =~ /^\d+$/i || &error($text{'ftp_eport'});
$_[0]->{'port'} = $in{'port'};
$in{'ftpuser_def'} || $in{'ftpuser'} =~ /^\S+$/ || &error($text{'ftp_euser'});
$_[0]->{'user'} = $in{'ftpuser_def'} ? undef : $in{'ftpuser'};
$_[0]->{'pass'} = $in{'ftppass'};
$in{'file_def'} || $in{'file'} =~ /^\S+$/ || &error($text{'ftp_efile'});
$_[0]->{'file'} = $in{'file_def'} ? undef : $in{'file'};
if ($in{'alarm_def'}) {
delete($_[0]->{'alarm'});
}
else {
$in{'alarm'} =~ /^\d+$/ || &error($text{'http_ealarm'});
$_[0]->{'alarm'} = $in{'alarm'};
}
$_[0]->{'tls'} = $in{'tls'};
if ($in{'tls'}) {
eval "use Net::FTPSSL";
if ($@) {
&error(&text('ftp_etls', '<tt>Net::FTPSSL</tt>'));
}
}
}
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