<?
require_once("../cms/lib/database.inc.php");
require_once("config.inc.php");

$types = array("tgz" => "application/x-tar", "iso" => "application/x-iso", "img" => "application/octet-stream", "gz" => "application/octet-stream", "exe" => "application/octet-stream", "other" => "application/octet-stream");
$ln = "cp";

if (preg_match("/customized/", $_GET['file'])) {
	// Benutzerdefiniertes ISO

	require_once("templates/download.inc.php");

	session_start();

	if (empty($_SESSION['customize'])) {
		header(true, true, 406);
		exit("Veralteter Download Link!");
	}

	$custompath = $config['download'] . "/custom/";
	$tmppath = $custompath . session_id();

	`cd $custompath; find -maxdepth 1 -mmin +60 -type d ! -name .. ! -name . -exec rm -r "{}" ";" 2>/dev/null`;

	`rm -rf "$tmppath"`;
	mkdir("$tmppath") || die("Can't create temp dir!");
	mkdir("$tmppath/iso") || die("Can't create temp dir!");
	mkdir("$tmppath/log");
	`tar -xzf {$_SESSION['customize']['base']} -C $tmppath/iso`;
#	echo "tar -xzf {$_SESSION['customize']['base']} -C $tmppath/iso";
#	exit;

	if ($_SESSION['customize']['path'] >= "4.0.0") {

		$download = new Download($_SESSION['customize']['path']);
		$version = 0;
		if ($_SESSION['customize']['path'] >= "5") {
			$files = $download->getFiles("", $_SESSION['customize']['class'], $_SESSION['customize']['arch']);
			$destDir = "$tmppath/iso/dpkg/";
			$arch = preg_replace("/.*(_.*)\..*/", "\\1", $_SESSION['customize']['base']);
		} else {
			$files = $download->getFiles("base/packages", $_SESSION['customize']['class']);
			$files = array_merge($files, $download->getFiles("libs/packages", $_SESSION['customize']['class']));
			$destDir = "$tmppath/iso/opkg/";
		}
		$deps = $download->dependencies;
		@mkdir($destDir);
		function  addPackage($package)
		{
			global $version, $tmppath, $files, $deps, $destDir, $ln;
			if (isset ($files[$package])) {
				$src = $files[$package]['path'] . $files[$package]['filename'];
				$dest = $destDir . $files[$package]['filename'];
				if (!file_exists($dest) && !in_array($package, $deps['initramfs'])) {
					`$ln "$src" "$dest"`;
					if (!file_exists($dest)) {
						return;
					}
					$version += $files[$package]['revision'];
					if ($deps[$package]) {
						foreach ($deps[$package] as $package) {
							addPackage($package);
						}
					}
				}
			}
		}
		if (isset ($_COOKIE['addons'])) {
			foreach ($_COOKIE['addons'] as $package => $state) {
				addPackage($package);
				`echo "$package" >> $tmppath/log/selection`;
			}
			`ls $destDir > $tmppath/log/packages`;
		}
		// log information about the customized image
		$base = preg_replace("/.*\//", "", $_SESSION['customize']['base']);
		`echo "$base" >> $tmppath/log/base`;
		$logfile = tempnam("{$config['data']}logs", "");
		umask(0);
	    chmod($logfile, 0644);
		$logkey = preg_replace("/.*\//", "-", $logfile);
		`cd $tmppath/log; tar -czf $logfile *`;

	} else {

		if (is_dir("$tmppath/iso/boot/grub/")) {
			chmod("$tmppath/iso/boot/grub/stage2_eltorito", 0644);
		}
	
		@mkdir("$tmppath/iso/etc");
	
		$download = new Download($_SESSION['customize']['path']);
	
		$files = $download->getFiles("base", $_SESSION['customize']['class']);
		if (isset($files['kernel'])) {
			$old = "$tmppath/iso/boot/*kernel*";
			$src = $files['kernel']['path'] . $files['kernel']['filename'];
			`rm $old`;
			`$ln "$src" "$tmppath/iso/boot/kernel"`;
			`touch "$tmppath/iso/boot/{$files['kernel']['filename']}"`;
		}
		$version = 0;
		$deps = $download->dependencies;
		$files = $download->getFiles("vdr-", $_SESSION['customize']['class']);
		$files = $files ? $files : $download->getFiles("vdrapi-", $_SESSION['customize']['class']);
		$files = array_merge($files, $download->getFiles("system", $_SESSION['customize']['class']));
		@mkdir("$tmppath/iso/addons");
		@mkdir("$tmppath/iso/addons/inactive");
		function  addAddon($addon, $state)
		{
			global $version, $tmppath, $files, $deps, $ln;
			if (isset ($files[$addon])) {
				$src = $files[$addon]['path'] . $files[$addon]['filename'];
				$dest = "$tmppath/iso/addons/" . ($state == -1 ? "inactive/" : "") . $files[$addon]['filename'];
				if (!file_exists($dest)) {
					`$ln "$src" "$dest"`;
					if (!file_exists($dest)) {
						return;
					}
					if ($state != -1 && is_file("$tmppath/iso/addons/inactive/" . $files[$addon]['filename'])) {
						unlink("$tmppath/iso/addons/inactive/" . $files[$addon]['filename']);
					} else {
						$version += $files[$addon]['revision'];
					}
					if ($deps[$addon]) {
						foreach ($deps[$addon] as $addon) {
							addAddon($addon, $state);
						}
					}
				}
			}
		}
	
		if (isset ($_COOKIE['addons'])) {
			foreach ($_COOKIE['addons'] as $addon => $state) {
				addAddon($addon, $state);
			}
		}
		if (preg_match("/^3\./", $_SESSION['customize']['path'])) {
			`cd $tmppath/iso; mv addons etc/; cd etc/addons; ls MLD* > active; mv inactive/MLD* . 2>/dev/null; rm -r inactive`;
		}

	}

	$basePrefix = preg_replace("/.*\/([^_]*).*/", "\\1", $_SESSION['customize']['base']);
	$baseVersion = preg_replace("/.*[-_](\d+).*\.tgz/", "\\1", $_SESSION['customize']['base']);
	$class = $_SESSION['customize']['class']==1 ? "stable" : ($_SESSION['customize']['class'] ? $_SESSION['customize']['class'] : "testing");

	$version = $_SESSION['customize']['path'];
	$imagetype = $version >= "5.4" ? (preg_match("/.iso/", $_GET['file']) ? "iso" : "img") : (is_dir("$tmppath/iso/boot/grub/") || is_dir("$tmppath/iso/boot/isolinux/") || is_dir("$tmppath/iso/syslinux/") ? "iso" : ($version < "5.3" ? (is_file("$tmppath/iso/u-boot.bin") ? "img.gz" : "tgz") : "img"));
	$type = $types[$imagetype];
	$date = date("Y.m.d");
	$name = "{$basePrefix}_customized_{$date}-{$baseVersion}+{$version}{$logkey}{$arch}.{$imagetype}";
//	$name = "{$basePrefix}_customized-{$class}_{$date}-{$baseVersion}+{$version}{$arch}.{$imagetype}";
	$file = "$tmppath/$name";
	$logname = preg_replace("/.*\/(.*)_base([-_])(.*)/", "\\1_customize\\2\\3", $_SESSION['customize']['base']);

	if ($imagetype == "iso") {
		// x86
		if (is_dir("$tmppath/iso/boot/grub/")) {
			// MLD-2
			`genisoimage -R -J -V "MLD-$version" -b boot/grub/stage2_eltorito -no-emul-boot -boot-load-size 4 -boot-info-table -o $file $tmppath/iso &>$tmppath/log/build.log`;
		} else if (is_dir("$tmppath/iso/boot/isolinux/")) {
			// MLD-3
			`genisoimage -R -J -V "MLD-$version" -b boot/isolinux/isolinux.bin -c boot/isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o $file $tmppath/iso &>$tmppath/log/build.log`;
			`isohybrid $file >>$tmppath/log/build.log 2>&1`;
		} else if ($version < "5.4") {
			// MLD-5
			`genisoimage -R -J -V "MLD-$version" -b syslinux/isolinux.bin -c syslinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o $file $tmppath/iso &>$tmppath/log/build.log`;
			`isohybrid $file >>$tmppath/log/build.log 2>&1`;
		} else {
			// MLD-5.4
			$timestamp = time();
			`sed -e "s|root=\S*|root=UUID=\$(date -d @$timestamp '+%Y-%m-%d-%H-%M-%S-00') ro|g" $tmppath/iso/syslinux/syslinux.cfg > $tmppath/iso/syslinux/isolinux.cfg`;
			`genisoimage -R -J -V "MLD-$version" -modification-date=\$(date -d @$timestamp '+%Y%m%d%H%M%S00') -b syslinux/isolinux.bin -c syslinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o $file $tmppath/iso >$tmppath/log/build.log 2>&1`;
			`isohybrid $file >>$tmppath/log/build.log 2>&1`;
		}
	} else if ($imagetype == "tgz") {
		// RPI, WeTek as tgz bis MLD-5.1
		`cd $tmppath/iso; tar -czf $file * &>$tmppath/log/build.log`;
	} else {
		// BPI, (RPI, WeTek ab MLD-5.3), MLD-5.4
		exec("
		cd $tmppath
		(
		PATH=/usr/local/bin:\$PATH
		size=\$((\$(du -s iso/ | cut -f1)/1024+2))
		truncate -s\$((\$size+2))M $file
		echo \"n\np\n1\n\n+\${size}M\n t\nb\n w\" | fdisk -u -c -C100 $file
		truncate -s\${size}M image.p1
		mkfs.vfat -n 'MLD-$version' image.p1
		uuid=\$(blkid image.p1 -o value -s UUID)
		test -e iso/syslinux && sed -e \"s|root=\S*|root=UUID=\$uuid|g\" -i iso/syslinux/syslinux.cfg
		test -e iso/efi/boot && sed -e \"s|root=\S*|root=UUID=\$uuid|g\" -i iso/efi/boot/syslinux.cfg
		test -e iso/cmdline && sed -e \"s|root=\S*|root=UUID=\$uuid|g\" -i iso/cmdline
		test -e iso/uEnv.txt && sed -e \"s|root=\S*|root=UUID=\$uuid|g\" -i iso/uEnv.txt
		mcopy -i image.p1 -s iso/* ::
		sync
		#test -e iso/syslinux && syslinux --directory /syslinux/ --install image.p1
		test -e iso/syslinux && syslinux --zip --install image.p1
		sync
		dd if=image.p1 of=$file bs=1024 seek=1024 conv=notrunc >/dev/null
		test -e iso/syslinux && dd if=iso/syslinux/mbr.bin of=$file bs=1024 conv=notrunc >/dev/null
		test -e iso/u-boot.bin && dd if=iso/u-boot.bin of=$file bs=1024 seek=8 conv=notrunc >/dev/null
		sync
		test $imagetype = img.gz && gzip -9 $file
		rm -f image.p1
		) >log/build.log 2>&1
		");
	}

	ignore_user_abort(true);
	if ($fp = @fopen("{$config['logs']}customize.txt", "r+")) {
		if (flock($fp, LOCK_EX)) {
			$customize = unserialize(fread($fp, filesize("{$config['logs']}customize.txt") + 1));

			$customize['all'] = isset ($customize['all']) ? $customize['all'] + 1 : 1;
			if (isset ($_COOKIE['addons'])) {
				foreach ($_COOKIE['addons'] as $addon => $state) {
					if (isset ($files[$addon])) {
						$customize[$addon] = isset ($customize[$addon]) ? $customize[$addon] + 1 : 1;
					}
				}
			}

			rewind($fp);
			fwrite($fp, serialize($customize));

			flock($fp, LOCK_UN);
		}
		fclose($fp);
	} else {
		@touch("{$config['logs']}customize.txt");
	}
	ignore_user_abort(false);
	
	session_write_close();

} else {
	// Normale Datei

	if (empty($_GET['file'])) {
		header(true, true, 406);
		exit("Dateiname fehlt!");
	}

	$file = $config['download'] . preg_replace("/ /", "+", preg_replace("/\.{2,}/", "", $_GET['file']));
	$type = preg_replace("/.*\.([^.]+)$|.*/", "\\1", $file);
	$type = isset ($types[$type]) ? $types[$type] : $types['other'];
	$name = preg_replace("/.*\/(.*)|.*/", "\\1", $file);
	$logname = $name;

	if (!$name || !file_exists($file)) {
		header(true, true, 404);
		exit("Unbekannte Datei!");
	}
}

if (preg_match("#/docs/|\.txt$#", $_GET['file'])) {
	// show file
	header("Content-Type: text/plain; charset=UTF8");
	header("Content-Disposition: filename=" . $name);
	header("Content-Length: " . filesize($file));
} else {
	// download file
	if (ini_get('zlib.output_compression')) {
		ini_set('zlib.output_compression', 'Off');
	}
	header("Pragma: public");
	header("Expires: 0");
	header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
	header("Cache-Control: private"); // IE6 bug fix
	header("Content-Type: $type");
	if (isset($_SERVER['HTTP_USER_AGENT']) && strstr($_SERVER['HTTP_USER_AGENT'], "mac")) {
		header("Content-Type: application/x-macbinary");
	} else {
		header("Content-Type: application/force-download");
	}
	if (isset($_SERVER['HTTP_USER_AGENT']) && strstr($_SERVER['HTTP_USER_AGENT'], "msie") && strstr($_SERVER['HTTP_USER_AGENT'], "win")) {
		header("Content-Disposition: filename=" . $name);
	} else {
		header("Content-Disposition: attachment; filename=" . $name);
	}
	header("Content-Description: File Transfer");
	header("Content-Length: " . filesize($file));

	// Download Statistik
	$db = new Database("data", $GLOBALS['config']['db']);
	$db->query("UPDATE state SET access=access+1 WHERE filename='$logname'");
}

$fd = fopen($file, "rb");
if ($fd) {
	while (!feof($fd)) {
		echo fread($fd, 4096);
		flush();
	}
	fclose($fd);
}
?>