#!/usr/bin/perl

=head1 check-scripts.pl

Verify scripts available in Virtualmin

Makes sure all scripts installers have valid files, and that the latest
version is available in Virtualmin. This is for internal use, and shouldn't
be called.

=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/check-scripts.pl";
	require './virtual-server-lib.pl';
	$< == 0 || die "check-scripts.pl must be run as root";
	}

# Parse command-line args
while(@ARGV) {
	$a = shift(@ARGV);
	if ($a eq "--debug") {
		$debug = 1;
		}
	elsif ($a eq "--multiline") {
		$multiline = 1;
		}
	elsif ($a eq "--write-updates") {
		$write_updates = 1;
		}
	elsif ($a eq "--help") {
		&usage();
		}
	elsif ($a !~ /^\-/) {
		push(@scripts, $a);
		}
	else {
		&usage("Unknown parameter $a");
		}
	}

if (!@scripts) {
	@scripts = &list_scripts();
	}

foreach $s (@scripts) {
	$script = &get_script($s);
	next if ($script->{'nocheck'});

	# Make sure all of the versions are available
	foreach $v (@{$script->{'versions'}}) {
		print "Checking $s $v ..\n";
		@files = &{$script->{'files_func'}}(undef, $v, undef, undef);
		foreach $f (@files) {
			# Try a download
			if ($f->{'nocheck'}) {
				print ".. checking disabled\n";
				next;
				}
			($url, $def) = &convert_osdn_url($f->{'url'});
			if ($def == 1) {
				# Couldn't find OSDN file
				print ".. no such file\n";
				push(@errs, [ $script, $v, $url, "No such file" ]);
				next;
				}

			if ($url =~ /^ftp:\/\/([^\/]+)(\/.*)$/) {
				# Check FTP file
				print "Trying $url ..\n";
				$size = undef;
				for($i=0; $i<10; $i++) {
					$size = &ftp_size($1, $2);
					last if ($size);
					sleep($i*5);
					}
				if (!$size) {
					print ".. FTP file not found\n";
					push(@errs, [ $script, $v, $url, "FTP file not found" ]);
					}
				else {
					print ".. OK\n";
					}
				}
			else {
				# Do HTTP download
				print "Trying $url ..\n";
				($host, $port, $page, $ssl) = &parse_http_url($url);
				$h = &make_http_connection(
					$host, $port, $ssl,
					$f->{'method'} || "HEAD", $page,
					[ [ 'Host', $host ],
					  [ 'User-agent', 'Webmin' ],
					  [ 'Accept-language', 'en' ] ]);
				if (!ref($h)) {
					print ".. failed : $h\n";
					push(@errs, [ $script, $v, $url, $h ]);
					next;
					}
				
				# Make sure the file exists
				$line = &read_http_connection($h);
				$line =~ s/\r|\n//g;
				if ($line !~ /^HTTP\/1\..\s+(200|30[0-9])\s+/) {
					print ".. HTTP error : $line\n";
					push(@errs, [ $script, $v, $url, $line ]);
					}
				else {
					print ".. OK\n";
					}
				&close_http_connection($h);
				}
			}
		}

	# Make sure Virtualmin has the latest version
	$lfunc = $script->{'latest_func'};
	$url = undef;
	if (defined(&$lfunc)) {
		foreach $v (@{$script->{'versions'}}) {
			($url, $re, $prefix, $suffix, $opts) = &$lfunc($v);
			next if (!$url || !$re);
			$opts ||= { };
			print "Checking $script->{'name'} website for $v ..\n";
			$data = $err = undef;
			if ($opts->{'wget'}) {
				$data = &backquote_command("wget -O - -q ".quotemeta($url)." 2>/dev/null");
				$err = "wget $url failed" if ($?);
				}
			else {
				($host, $port, $page, $ssl) =
					&parse_http_url($url);
				&http_download($host, $port, $page, \$data,
					       \$err, undef, $ssl, undef, undef,
					        undef, 0, 1);
				}
			if ($err || !$data) {
				push(@errs, [ $script, $v, $url,
					"Failed to find latest version" ]);
				print ".. Download failed : $err\n";
				next;
				}

			# Extract all the versions
			local @vers;
			if (ref($re)) {
				# By callback func on data
				@vers = &$re($data, $v);
				}
			else {
				# Using regexp
				while($data =~ /$re(.*)/is) {
					push(@vers, $prefix.$1.$suffix);
					$data = $2;
					}
				}

			if (@vers) {
				@vers = sort { &compare_versions($b, $a, $script) }
					     &unique(@vers);
				$lver = $vers[0];
				if (&compare_versions($lver, $v, $script) > 0) {
					push(@errs, [ $script, $v, $url,
						"Version $lver is available" ]);
					print ".. found newer version $lver\n";
					if ($write_updates) {
						patch_file(
							$script->{'filename'},
							$script->{'name'},
							$v, $lver);
						}
					}
				elsif (&compare_versions($lver, $v, $script) < 0) {
					push(@errs, [ $script, $v, $url,
						"Version $lver is older than $v" ]);
					print ".. found older version $lver\n";
					}
				else {
					print ".. OK\n";
					}
				}
			else {
				push(@errs, [ $script, $v, $url,
					"Failed to find version number" ]);
				print ".. Failed to find version\n";
				}
			}
		}

	# Check for versions by querying osdn
	$clfunc = $script->{'check_latest_func'};
	if (defined(&$clfunc)) {
		foreach $v (@{$script->{'versions'}}) {
			print "Checking $script->{'name'} versions for $v ..\n";
			$lver = &$clfunc($v);
			if ($lver) {
				push(@errs, [ $script, $v, $url,
					"Latest version is $lver" ]);
				print ".. found newer version : $lver\n";
				if ($write_updates) {
					patch_file(
						$script->{'filename'},
						$script->{'name'},
						$v, $lver);
					}
				}
			else {
				print ".. OK\n";
				}
			}
		}

	}

# Send off any errors via email
if (@errs) {
	&foreign_require("mailboxes");
	$body = "The following errors were detected downloading script files:\n";
	foreach $e (@errs) {
		$body .= "\n";
		$body .= "Script:  $e->[0]->{'name'}\n";
		$body .= "Version: $e->[1]\n";
		$body .= "URL:     $e->[2]\n" if ($e->[2]);
		$body .= "Error:   $e->[3]\n";
		}
	if ($debug) {
		print STDERR $body;
		exit(1);
		}
	else {
		&mailboxes::send_text_mail(&get_global_from_address(),
					   "jcameron\@webmin.com",
					   undef,
					   "Virtualmin script errors",
					   $body);
		}
	}

sub patch_file
{
my ($script_file, $script_name, $ver_curr, $ver_new) = @_;
print "Patching installer file with newer version ..\n";
my ($ok, $err) = &script_ppi_update_sub_content(
	$script_file,
	"script_${script_name}_versions",
	qr/\Q$ver_curr\E/,
	$ver_new );
if ($ok) {
	print ".. file patched successfully\n";
	}
else {
	print ".. file patch failed: $err\n";
	}
}

sub ftp_size
{
local ($host, $file) = @_;

# connect to host and login
local $error;
&open_socket($host, 21, "SOCK", \$error) || return 0;
alarm(0);
if ($download_timed_out) {
	return 0;
	}
&ftp_command("", 2, \$error) || return 0;

# Login as anonymous
local @urv = &ftp_command("USER anonymous", [ 2, 3 ], \$error);
@urv || return 0;
if (int($urv[1]/100) == 3) {
	&ftp_command("PASS root\@".&get_system_hostname(), 2,
		     \$error) || return 0;
	}

# get the file size and tell the callback
&ftp_command("TYPE I", 2, \$error) || return 0;
local $size = &ftp_command("SIZE $file", 2, \$error);

&ftp_command("QUIT", 2, \$error) || return 0;
return $size;
}

sub usage
{
print "$_[0]\n\n" if ($_[0]);
print "Verifies that Virtualmin scripts are available\n";
print "\n";
print "virtualmin check-scripts [--debug] [scriptname]*\n";
exit(1);
}