<?PHP
$conf = array();
$conf['backup_time'] = time();
$conf['backup_limit'] = 7;
$conf['backup_dir'] = "/home/skarecrow/backup";
$conf['backup_fld'] = "/home/skarecrow/www";
$conf['fl_backuplog'] = "/home/skarecrow/backup/log.txt";
$conf['fl_checksum'] = "/home/skarecrow/backup/chksum.txt";
$conf['fl_backup'] = "Leave_Blank";
$conf['backup_sum'] = "Leave_Blank";

logMessage("Starting Backup Generator: ".date("F j, Y, g:i a"));

build();
BuildBackup();

function build() {

	global $conf;

	if (!file_exists($conf['fl_checksum'])) {

		$conf['backup_sum'] = "null";

		logMessage("Checksum file does not exist. Setting sum to null.");

	} else {

		$conf['backup_sum'] = file_get_contents($conf['fl_checksum']);
		$conf['backup_sum'] = str_replace("\n", "", $conf['backup_sum']);

		logMessage("Checksum loaded. Last Backup checksum {$conf['backup_sum']}");

	}

}

function BuildBackup() {

	global $conf;

	$conf['fl_backup'] = $conf['backup_dir']."/".$conf['backup_time'].".tar";

	logMessage("Generating backup {$conf['backup_time']}");

	exec("tar -cf {$conf['fl_backup']} {$conf['backup_fld']} > {$conf['fl_backuplog']}");


}

function logMessage($msg) {

	global $conf;

	$file = fopen($conf['fl_backuplog'], "a+");
	fputs($file, $msg."\n");
	fclose($file);

}

logMessage("Backup Generator Completed: ".date("F j, Y, g:i a"));
?>