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Filename : functions.php
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<?php

/*
* BACKUPLY
* https://backuply.com
* (c) Backuply Team
*/

if(!defined('ABSPATH')) {
	die('HACKING ATTEMPT!');
}

function backuply_get_protocols(){
	
	$protocols['ftp'] = 'FTP';
	$protocols['gdrive'] = 'Google Drive';
	$protocols['bcloud'] = 'Backuply Cloud';
	
	if(defined('BACKUPLY_PRO')) {
		
		if(!function_exists('backuply_get_pro_backups') && defined('BACKUPLY_PRO_DIR')) {
			include_once(BACKUPLY_PRO_DIR . '/functions.php');
		}
		
		$protocols += backuply_get_pro_backups();
	}
	
	return $protocols;
	
}

function backuply_create_backup_folders(){
	
	// Creating Backuply Folder
	if(!file_exists(BACKUPLY_BACKUP_DIR)) {
		@mkdir(BACKUPLY_BACKUP_DIR, 0755, true);
	}
	
	$random_string = wp_generate_password(6, false);
	
	// Creating backups_info folder
	if(file_exists(BACKUPLY_BACKUP_DIR . 'backups_info')){
		@rename(BACKUPLY_BACKUP_DIR . 'backups_info', BACKUPLY_BACKUP_DIR . 'backups_info-'. $random_string);
	}
	
	// Creating backups folder
	if(file_exists(BACKUPLY_BACKUP_DIR . 'backups')){
		@rename(BACKUPLY_BACKUP_DIR . 'backups', BACKUPLY_BACKUP_DIR . 'backups-'. $random_string);
	}

	$backup_info = backuply_glob('backups_info');
	$backups = backuply_glob('backups');
	
	if(empty($backup_info)){
		@mkdir(BACKUPLY_BACKUP_DIR . 'backups_info-' . $random_string, 0755, true);
	}
	
	if(empty($backups)){
		@mkdir(BACKUPLY_BACKUP_DIR . 'backups-' . $random_string, 0755, true);
	}
}


// Add the htaccess file to protect us !
function backuply_add_htaccess(){
	
	if(!file_exists(BACKUPLY_BACKUP_DIR)) {
		@mkdir(BACKUPLY_BACKUP_DIR, 0755, true);
	}
	
	$htaccess = @fopen(BACKUPLY_BACKUP_DIR . '.htaccess', 'w');
	if(!$htaccess) {
		return false;
	}
	
	@fwrite($htaccess, 'deny from all');
	@fclose($htaccess);
	
	return true;
}

// Add the webconfig file to protect us !
function backuply_add_web_config(){
	
	if(file_exists(BACKUPLY_BACKUP_DIR . 'web.config')){
		return true;
	}
	
	$web_config = @fopen(BACKUPLY_BACKUP_DIR . 'web.config', 'w');
	if(!$web_config) {
		return false;
	}
	
	$web_conf = '<configuration>
<system.webServer>
<authorization>
<deny users="*" />
</authorization>
</system.webServer>
</configuration>';
	
	@fwrite($web_config, $web_conf);
	@fclose($web_config);
	
	return true;
}

// Add the htaccess folder to protect us !
function backuply_add_index_files(){
	
	if(!file_exists(BACKUPLY_BACKUP_DIR)) {
		@mkdir(BACKUPLY_BACKUP_DIR, 0755, true);
	}
	
	$php_protection = '<?php //Backuply';
	$html_protection = '<html><body><a href="https://backuply.com" target="_blank">WordPress backups by Backuply</a></body></html>';

	@file_put_contents(BACKUPLY_BACKUP_DIR . 'index.html', $html_protection);
	@file_put_contents(BACKUPLY_BACKUP_DIR . 'index.php', $php_protection);
	
	$backups = backuply_glob('backups');
	
	if(!empty($backups)){
		if(!file_exists($backups . '/index.html')){
			@file_put_contents($backups . '/index.html', $html_protection);
		}
		
		if(!file_exists($backups . '/index.php')){
			@file_put_contents($backups . '/index.php', $php_protection);
		}
		
		// Protecting backups-*/tmp folder
		if(!file_exists($backups . '/tmp/index.html')){
			@mkdir($backups . '/tmp');
			@file_put_contents($backups . '/tmp/index.html', $html_protection);
		}
		
		if(!file_exists($backups . '/tmp/index.php')){
			@file_put_contents($backups . '/tmp/index.php', $php_protection);
		}
	}

	// Protecting backups_info folder
	$backups_info = backuply_glob('backups_info');
	
	if(!empty($backups_info)){
		if(!file_exists($backups_info . '/index.html')){
			@file_put_contents($backups_info . '/index.html', $html_protection);
		}

		if(!file_exists($backups_info . '/index.php')){
			@file_put_contents($backups_info . '/index.php', $php_protection);
		}
	}
}

function backuply_glob($relative_path){
	$glob = glob(BACKUPLY_BACKUP_DIR . $relative_path . '-*', GLOB_ONLYDIR);
	
	if(!empty($glob[0])){
		return $glob[0];
	}

	return false;
}


function backuply_kill_process($is_restore = false) {
	delete_option('backuply_status');
	update_option('backuply_backup_stopped', true);
	
	if(!empty($is_restore)){
		backuply_clean_restoration_file();
	}

	die();
}

function backuply_clean_restoration_file(){

	// Restore is complete now we dont need this
	if(file_exists(BACKUPLY_BACKUP_DIR.'/restoration/restoration.php')) {
		@unlink(BACKUPLY_BACKUP_DIR.'/restoration/restoration.php');
	}
	
	if(is_dir(BACKUPLY_BACKUP_DIR.'/restoration')) {
		@rmdir(BACKUPLY_BACKUP_DIR.'/restoration');
	}
	
	// Deleting restore index file
	if(file_exists(ABSPATH . '/backuply-restore.php')){
		unlink(ABSPATH . '/backuply-restore.php');
	}
}

// If there is a restore or backup task running
function backuply_active(){
	global $backuply;
	
	$backuply['status'] = get_option('backuply_status');
	
	// Nothing there
	if(empty($backuply['status']['last_time'])){
		return false;
	}
	
	// No updates since 5 min
	if((time() - BACKUPLY_TIMEOUT_TIME) > $backuply['status']['last_time']){
		return false;
	}
	
	return true;
	
}

// Verifies the backuply key
function backuply_verify_self($key, $restore_key = false) {
	
	if(empty($key)) {
		return false;
	}
	
	$config = backuply_get_config();
	
	if(!empty($restore_key)){
		if(!empty($config['RESTORE_KEY']) && urldecode($key) == $config['RESTORE_KEY']) {
			return true;
		}
		
		return false;
	}

	if(urldecode($key) == $config['BACKUPLY_KEY']) {
		return true;
	}

	return false;
}

// Wp-Cron handle for timeout check i.e. clean dead processes
// Terminates process if no update for 30 min
function backuply_timeout_check($is_restore) {	
	
	global $backuply;
	
	// Is it a restore check ?
	if(!empty($is_restore)) {
		
		$file = BACKUPLY_BACKUP_DIR . '/restoration/restoration.php';
		
		if(!file_exists($file)) {
			die();
		}
		
		$fm_time = filemtime($file);
		
		if((time() - $fm_time) >= BACKUPLY_TIMEOUT_TIME) {
			backuply_kill_process(true);
		}
	
	// Its a backup process
	} else {
		
		if(empty($backuply['status']['last_update'])){
			backuply_kill_process();
		}
		
		if((time() - $backuply['status']['last_update']) >= BACKUPLY_TIMEOUT_TIME) {
			backuply_kill_process();
		}
		
	}
	
	// To check after 5 minutes again
	wp_schedule_single_event(time() + BACKUPLY_TIMEOUT_TIME, 'backuply_timeout_check', array('is_restore' => $is_restore));
	
}

// Create a config file and set it with a key
function backuply_set_config() {
	
	$write['BACKUPLY_KEY'] = backuply_csrf_get_token();
	// $write['RESTORE_KEY'] = backuply_csrf_get_token();
	
	update_option('backuply_config_keys', $write);
}

function backuply_set_config_file(){

	$write = get_option('backuply_config_keys', []);

	if(empty($write)){
		return false;
	}

	$config_file = BACKUPLY_BACKUP_DIR . 'backuply_config.php';
	
	$fp = @fopen($config_file, 'w');
	
	if(!is_resource($fp)){
		return;
	}

	@fwrite($fp, "<?php exit();?>\n" . json_encode($write, JSON_PRETTY_PRINT));
	@fclose($fp);
	
	@chmod($config_file, 0600);

	return true;
}

function backuply_update_restore_key(){
	
	$config = get_option('backuply_config_keys');

	if(empty($config)) {
		backuply_set_config();
		return;
	}

	$restore_key = backuply_csrf_get_token();
	$config['RESTORE_KEY'] = $restore_key;
	
	update_option('backuply_config_keys', $config);
}

// Sets Backup Location details in Restoration File
function backuply_set_restoration_file($loc) {
	$write['protocol'] = $loc['protocol'];
	$write['name'] = $loc['name'];
	
	$restoration_file = BACKUPLY_BACKUP_DIR . 'restoration/restoration.php';
	
	$fp = @fopen($restoration_file, 'w');
	
	if(!is_resource($fp)){
		return;
	}

	if (0 == filesize($restoration_file)){
		// file is empty
		@fwrite($fp, "<?php exit();?>\n");
	}
	
	@fwrite($fp, json_encode($write, JSON_PRETTY_PRINT));
	@fclose($fp);
	
	@chmod($restoration_file, 0600);
}

// Sets Backup Location details in Restoration File
function backuply_get_restoration_data() {
	$restoration_file = BACKUPLY_BACKUP_DIR . 'restoration/restoration.php';
	
	$fp = @fopen($restoration_file, 'r');
	@fseek($fp, 16);
	
	if(filesize($restoration_file) == 0){
		return;
	}
	
	$content = @fread($fp, filesize($restoration_file));
	@fclose($fp);
	
	if(empty($content)) {
		return [];
	}
	
	$restro = json_decode($content, true);

	return $restro;
}

// Get Config Array
function backuply_get_config() {
	
	$config_file = BACKUPLY_BACKUP_DIR . 'backuply_config.php';
	
	// Fetch keys saved in DB
	if(!file_exists($config_file)){
		$db_keys = get_option('backuply_config_keys', []);

		if(empty($db_keys)){
			return [];
		}

		return $db_keys;
	}
	
	if(empty(filesize($config_file))) {
		return [];
		//backuply_get_config();
	}

	$fp = @fopen($config_file, 'r');
	
	if(!is_resource($fp)){
		return [];
	}
	
	@fseek($fp, 16);
	
	$file_size = filesize($config_file);
	if(empty($file_size)){
		return [];
	}
	
	$content = @fread($fp, $file_size);
	@fclose($fp);
	
	if(empty($content)) {
		return [];
	}
	
	$config = json_decode($content, true);

	return $config;
}

// Create or updates the log file
function backuply_status_log($log, $status = 'working', $percentage = 0){
	$log_file = BACKUPLY_BACKUP_DIR . 'backuply_log.php';
	
	if(!file_exists($log_file) || 0 == filesize($log_file)) {
		$log = "<?php exit();?>\n" . $log; //Prepend php exit
	}

	$this_log = $log . '|' . $status . '|' . $percentage . "\n";
	
	file_put_contents($log_file, $this_log, FILE_APPEND);
}

// Returns array of logs
function backuply_get_status($last_log = 0){
	$log_file = BACKUPLY_BACKUP_DIR. 'backuply_log.php';
	$logs = [];
	
	if(!file_exists($log_file)){
		$logs[] = 'Something went wrong!|error';
		delete_option('backuply_status');
		update_option('backuply_backup_stopped', 1, false);
		return $logs;
	}
	
	$fh = fopen($log_file, 'r');
	
	$seek_to = $last_log;
	@fseek($fh, $seek_to);
	
	$lines = fread($fh, fstat($fh)['size']);
	fclose($fh);
	$fh = null;
	return $lines;
}

// A compulsory POST which issues a error if the POST[$name] is not there
function backuply_POST($name, $e){

	global $error;

	//Check the POSTED NAME was posted
	if(!isset($_POST[$name]) || strlen(trim($_POST[$name])) < 1){
	
		$error[] = $e;
		
	}else{
		return backuply_inputsec(backuply_htmlizer(trim($_POST[$name])));
	}
}

// Used for the checkboxes which have the same names (i.e. name=SOMENAME[])
function backuply_POSTmulticheck($name, $value, $default = array()){
	
	if(isset($_POST[$name]) && is_array($_POST[$name])){
		if(in_array($value, $_POST[$name])){
			return 'checked="checked"';
		}
	}else{
		if(in_array($value, $default)){
			return 'checked="checked"';
		}
	}
	
	return true;
}

// A compulsory REQUEST which issues a error if the REQUEST[$name] is not there
function backuply_REQUEST($name, $e){

	global $error;

	//Check the POSTED NAME was posted
	if(!isset($_REQUEST[$name]) || strlen(trim($_REQUEST[$name])) < 1){
	
		$error[$name] = $e;
		
	}else{
		return backuply_inputsec(backuply_htmlizer(trim($_REQUEST[$name])));
	}
}

// Check if a field is posted via POST else return default value
function backuply_optpost($name, $default = ''){
	
	if(!empty($_POST[$name])){
		return backuply_inputsec(backuply_htmlizer(trim($_POST[$name])));
	}
	
	return $default;	
}

// Check if a field is posted via GET else return default value
function backuply_optget($name, $default = ''){
	
	if(!empty($_GET[$name])){
		return backuply_inputsec(backuply_htmlizer(trim($_GET[$name])));
	}
	
	return $default;	
}

// Check if a field is posted via GET or POST else return default value
function backuply_optreq($name, $default = ''){
	
	if(!empty($_REQUEST[$name])){
		return backuply_inputsec(backuply_htmlizer(trim($_REQUEST[$name])));
	}
	
	return $default;	
}

function backuply_POSTchecked($name, $default = false, $submit_name = ''){
	
	if(!empty($submit_name)){
		$post_to_check = isset($_POST[$submit_name]) ? backuply_optpost($submit_name) : '';
	}else{
		$post_to_check = $_POST;
	}
	
	return (!empty($post_to_check) ? (isset($_POST[$name]) ? 'checked="checked"' : '') : (!empty($default) ? 'checked="checked"' : ''));

}

function backuply_POSTselect($name, $value, $default = false){
	
	if(empty($_POST)){
		if(!empty($default)){
			return 'selected="selected"';
		}
	}else{
		if(isset($_POST[$name])){
			if(trim($_POST[$name]) == $value){
				return 'selected="selected"';
			}
		}
	}
}

///TODO:: Not being used
function backuply_POSTradio($name, $val, $default = null){
	
	return (!empty($_POST) ? (@$_POST[$name] == $val ? 'checked="checked"' : '') : (!is_null($default) && $default == $val ? 'checked="checked"' : ''));

}

function backuply_inputsec($string){

	$string = addslashes($string);
	
	// This is to replace ` which can cause the command to be executed in exec()
	$string = str_replace('`', '\`', $string);
	
	return $string;

}

function backuply_htmlizer($string){

	$string = htmlentities($string, ENT_QUOTES, 'UTF-8');
	
	preg_match_all('/(&amp;#(\d{1,7}|x[0-9a-fA-F]{1,6});)/', $string, $matches);//backuply_print($matches);
	
	foreach($matches[1] as $mk => $mv){		
		$tmp_m = backuply_entity_check($matches[2][$mk]);
		$string = str_replace($matches[1][$mk], $tmp_m, $string);
	}
	
	return $string;
	
}

function backuply_entity_check($string){
	
	//Convert Hexadecimal to Decimal
	$num = ((substr($string, 0, 1) === 'x') ? hexdec(substr($string, 1)) : (int) $string);
	
	//Squares and Spaces - return nothing 
	$string = (($num > 0x10FFFF || ($num >= 0xD800 && $num <= 0xDFFF) || $num < 0x20) ? '' : '&#'.$num.';');
	
	return $string;
}

// Check if a checkbox is selected
function backuply_is_checked($post){

	if(!empty($_POST[$post])){
		return true;
	}	
	return false;
}

// A Function that lists files and folders in a folder.
function backuply_sfilelist($startdir='./', $searchSubdirs=1, $directoriesonly=0, $maxlevel='all', $level=1){	
	return backuply_filelist_fn($startdir, $searchSubdirs, $directoriesonly, $maxlevel, $level);
}

// The below function will list all folders and files within a directory. It is a recursive function that uses a global array.
function backuply_filelist_fn($startdir='./', $searchSubdirs=1, $directoriesonly=0, $maxlevel='all', $level=1, $reset = 1){
	
   //list the directory/file names that you want to ignore
   $ignoredDirectory = array();
   $ignoredDirectory[] = '.';
   $ignoredDirectory[] = '..';
   $ignoredDirectory[] = '_vti_cnf';
   global $directorylist;	//initialize global array
   
	if(substr($startdir, -1) != '/'){
		$startdir = $startdir.'/';
	}
   
	if (is_dir($startdir)) {
		if ($dh = opendir($startdir)) {
			while (($file = readdir($dh)) !== false) {
				if (!(array_search($file,$ignoredDirectory) > -1)) {
					if (@filetype($startdir . $file) == 'dir') {

						//build your directory array however you choose;
						//add other file details that you want.

						$directorylist[$startdir . $file]['level'] = $level;
						$directorylist[$startdir . $file]['dir'] = 1;
						$directorylist[$startdir . $file]['name'] = $file;
						$directorylist[$startdir . $file]['path'] = $startdir;
						if ($searchSubdirs) {
							if ((($maxlevel) == 'all') or ($maxlevel > $level)) {
							   backuply_filelist_fn($startdir . $file . "/", $searchSubdirs, $directoriesonly, $maxlevel, ($level + 1), 0);
							}
						}
					} else {
						if (!$directoriesonly) {
							//if you want to include files; build your file array 
							//however you choose; add other file details that you want.
							$directorylist[$startdir . $file]['level'] = $level;
							$directorylist[$startdir . $file]['dir'] = 0;
							$directorylist[$startdir . $file]['name'] = $file;
							$directorylist[$startdir . $file]['path'] = $startdir;
						}
					}
				}
			}
			closedir($dh);
		}
	}

	if(!empty($reset)){
		$r = $directorylist;
		$directorylist = array();
		return($r);
	}
}

// Report an error
function backuply_report_error($error = array()){

	if(empty($error)){
		return true;
	}
	
	$error_string = '<b>Please fix the below error(s) :</b> <br />';

	foreach($error as $ek => $ev){
		$error_string .= '* '.$ev.'<br />';
	}
	
	echo '<div id="message" class="error"><p>'. wp_kses_post($error_string). '</p></div><br>';
	
}

// Report a success
function backuply_report_success($msg){

	if(empty($msg)){
		return true;
	}
	
	echo '<div id="message" class="notice updated is-dismissible"><p>'. wp_kses_post($msg) . '</p></div><br />';
}

// Generate a random string
function backuply_random_string($length = 10){
	$characters = '0123456789abcdefghijklmnopqrstuvwxyz';
	$charactersLength = strlen($characters);
	$randomString = '';
	for($i = 0; $i < $length; $i++){
		$randomString .= $characters[rand(0, $charactersLength - 1)];
	}
	return $randomString;
}

function backuply_print($array){

	echo '<pre>';
	print_r($array);
	echo '</pre>';

}

function backuply_cleanpath($path){
	$path = str_replace('\\\\', '/', $path);
	$path = str_replace('\\', '/', $path);
	$path = str_replace('//', '/', $path);
	return rtrim($path, '/');
}

//TODO:: Not being used
// Returns the Numeric Value of results Per Page
function backuply_get_page($get = 'page', $resperpage = 50){

	$resperpage = (!empty($_REQUEST['reslen']) && is_numeric($_REQUEST['reslen']) ? (int) backuply_optreq('reslen') : $resperpage);
	
	if(backuply_optget($get)){
		$pg = (int) backuply_optget($get);
		$pg = $pg - 1;		
		$page = ($pg * $resperpage);
		$page = ($page <= 0 ? 0 : $page);
	}else{	
		$page = 0;		
	}	
	return $page;
}

// This function just redirects to the Location specified and dies
function backuply_redirect($location, $header = true){
	//$prefix = (empty($raw) ? $globals['index'] : '');
	
	if($header){
	
		//Redirect
		header('Location: '.$location);
		
	}else{
		echo '<meta http-equiv="Refresh" content="0;url='.esc_url($location).'">';
	}
}

// Returns the CSRF Token, generates one if it does not exist
function backuply_csrf_get_token(){
	$csrf_token = bin2hex(openssl_random_pseudo_bytes(32));
	return $csrf_token;
}

// Update Backuply logs as per action
function backuply_log($data){
	global $backuply;
	
	if(empty($backuply['debug_mode'])){
		return;
	}

	$write = '';
	$write .= '['.date('Y-m-d H:i:s', time()).'] ';

	$write .= $data."\n\n";
	
	$backups_info = backuply_glob('backups_info');
	
	$log_file = $backups_info .'/debug.php';
	
	$fp = @fopen($log_file, 'ab');
	
	if (0 == @filesize($log_file)){
		// file is empty
		@fwrite($fp, "<?php exit();?>\n");
	}
	
	@fwrite($fp, $write);
	@fclose($fp);
	
	@chmod($log_file, 0600);
}

/**
 * This function will preg_match the pattern and return the respective values in $var
 * @package	  Backuply 
 * @param		 $pattern This should be the pattern to be matched
 * @param		 $file This should have the data to search from
 * @param		 $var This will be the variable which will have the preg matched data
 * @param		 $valuenum This should be the no of regular expression to be returned in $var
 * @param		 $stripslashes 0 or 1 depending upon whether the stripslashes function is to be applied (1) or not (0)
 * @return	   string Will pass value by reference in $var
 * @since	 	 4.5.4
 */
function backuply_preg_replace($pattern, $file, &$var, $valuenum, $stripslashes = ''){	
	preg_match($pattern, $file, $matches);

	if(!empty($matches) && !empty($matches[$valuenum])){
		if(empty($stripslashes)){
			$var = trim($matches[$valuenum]);
		}else{
			$var = stripslashes(trim($matches[$valuenum]));
		}
	}
}

//Function to return a file's size with their appropriate formats.
function backuply_format_size($size){
	$sizes = array(' Bytes', ' KB', ' MB', ' GB', ' TB', ' PB', ' EB', ' ZB', ' YB');
	if ($size == 0) { return('n/a'); } else {
	return (round($size/pow(1024, ($i = floor(log($size, 1024)))), 2) . $sizes[$i]); }
}

// Prevent pro activate text for installer
function backuply_install_plugin_complete_actions($install_actions, $api, $plugin_file){
	
	if($plugin_file == BACKUPLY_PRO_BASE){
		return array();
	}
	
	return $install_actions;
}

function backuply_get_backups_info(){
	
	// Get all Backups Information from the "backups_info" folder.
	$all_backup_info_files = backuply_glob('backups_info');
	$backup_files_location = backuply_glob('backups');
	
	$backup_infos = array();

	if(empty($all_backup_info_files)){
		return [];
	}

	$info_files = @scandir($all_backup_info_files);
	
	if(empty($info_files)){
		return $backup_infos;
	}
	
	foreach($info_files as $files){

		if($files != '.' && $files != '..'){
			
			$i = 0;
			$check_for_file = basename($files, '.php');

			$file = file($all_backup_info_files."/".$files);
			unset($file[0]);
			$all_info = json_decode(implode('', $file));

			$backup_file_location = $backup_files_location.'/'.$check_for_file.'.tar.gz';
			if(file_exists($backup_file_location) || isset($all_info->backup_location)){

				//Store all the files information in an array
				$backup_infos[] = $all_info;
			}
		}
	}

	return $backup_infos;
}

// Deletes backups
function backuply_delete_backup($tar_file) {
	
	global $error;
	
	$_file = $tar_file;
	$bkey = basename(basename($_file, '.tar.gz'), '.tar');
	$backup_info_dir = backuply_glob('backups_info');
	$deleted = false;
	
	// Load Backuply's remote backup locations.
	$backuply_remote_backup_locs = get_option('backuply_remote_backup_locs');
	
	$files_exists = 0;
	$backup_infos = backuply_get_backups_info();
	$is_bcloud = false; // We are using this so we know we need to update the quota too.

	foreach($backup_infos as $backup_info){
		// Is the backup on a remote location ? 
		if(!empty($backup_info->backup_location) && $backup_info->name == $bkey && array_key_exists($backup_info->backup_location, $backuply_remote_backup_locs)){

			$backup_dir = $backuply_remote_backup_locs[$backup_info->backup_location]['full_backup_loc'];
			$remote_stream_wrappers = array('dropbox', 'gdrive', 'softftpes', 'softsftp', 'webdav', 'aws', 'caws', 'onedrive', 'bcloud');

			if(in_array($backuply_remote_backup_locs[$backup_info->backup_location]['protocol'], $remote_stream_wrappers)){

				if($backuply_remote_backup_locs[$backup_info->backup_location]['protocol'] === 'bcloud'){
					$is_bcloud = true;
				}
				
				if(!defined('BACKUPLY_PRO') && $backuply_remote_backup_locs[$backup_info->backup_location]['protocol'] !== 'gdrive' && $backuply_remote_backup_locs[$backup_info->backup_location]['protocol'] !== 'bcloud') {
					$error[] = esc_html__('You are trying to access a PRO feature through FREE version', 'backuply');
					return false;
				} else if(defined('BACKUPLY_PRO')){
					include_once BACKUPLY_PRO_DIR . '/functions.php';
				}

				backuply_stream_wrapper_register($backuply_remote_backup_locs[$backup_info->backup_location]['protocol'], $backuply_remote_backup_locs[$backup_info->backup_location]['protocol']);
			}
			
			//echo "<br> checked for file existance : ".$backup_dir.'/'.$_file;
			
			if(file_exists($backup_dir.'/'.$_file)){
				//echo "<br> checked for file existance : ".$backup_dir.'/'.$_file;
				$files_exists = 1;
				break;
			}
		}else{
			$backup_dir = backuply_glob('backups');
		
			if(file_exists($backup_dir.'/'.$_file)){
				//echo "local file : ".$backup_dir.'/'.$_file;
				$files_exists = 1;
				break;
			}
		}
	}

	if(!empty($files_exists)){
		// Delete the backup
		@unlink($backup_dir.'/'.$_file);

		// Delete the backup_info file
		@unlink($backup_info_dir.'/'.$bkey.'.php');
		
		// If the Location is remote
		if(strpos($backup_dir, '://') !== FALSE){
			@unlink($backup_dir.'/'.$bkey.'.info'); // Changed to info file since 1.0.2
			@unlink($backup_dir.'/'.$bkey.'.log');
		}

		// Deleting log files from local
		if(file_exists(BACKUPLY_BACKUP_DIR . $bkey.'_log.php')){
			@unlink(BACKUPLY_BACKUP_DIR . $bkey.'_log.php');
		}

		$deleted = true;
	}else{

		// Delete the backup_info file
		@unlink($backup_info_dir.'/'.$bkey.'.php');
		
		// If the Location is remote
		@unlink($backup_dir.'/'.$bkey.'.php');
		if(strpos($backup_dir, '://') !== FALSE){
			@unlink($backup_dir.'/'.$bkey.'.info'); // Changed to info file since 1.0.2
			@unlink($backup_dir.'/'.$bkey.'.log');
		}
		
		// Deleting log files from remote and local
		if(file_exists(BACKUPLY_BACKUP_DIR . $bkey.'_log.php')){
			@unlink(BACKUPLY_BACKUP_DIR . $bkey.'_log.php');
		}
		
		$deleted = true;
	}

	// Updating the storage usage of Backuply Cloud.
	if(!empty($deleted) && !empty($is_bcloud)){
		$args = ['bcloud'];
		$schedule_time = wp_next_scheduled('backuply_update_quota', $args);

		// We are scheduling this because it makes a remote call and can take time
		// So we are pushing it on another request so, deletion can happen smoothly.
		// We have added a delay of some time so that if there is consecutive deletion
		// then we only make a single quota updation request.
		if(empty($schedule_time)){
			wp_schedule_single_event(time() + 10, 'backuply_update_quota', $args);
		}
	}
	
	if(file_exists($backup_dir.'/'.$_file)) {
		$deleted = false;
		$error[] = __('Unable to delete ', 'backuply') . esc_html($_file);
	}

	return $deleted;
}

// Creates log file
function backuply_create_log_file() {
	@unlink(BACKUPLY_BACKUP_DIR.'backuply_log.php');
	@touch(BACKUPLY_BACKUP_DIR.'backuply_log.php');
}

/**
 * Connect to the ftp server
 *
 * @param	string $host The hostname of the ftp server
 * @param	string $username The username Login detail
 * @param	string $pass The Login password
 * @param	string $cd The path of the file or directory to be changed
 * @returns 	bool
 */
function backuply_sftp_connect($host, $username, $pass, $protocol = 'ftp', $port = 21, $cd = false, $pri = '', $passphrase = ''){
	
	$port = (int) $port; // Converting to INT as FTP class requires an integer

	backuply_include_lib($protocol);
	
	if($protocol == 'ftp'){
		$ftp = new ftp(FALSE, FALSE);
		
		if(!$ftp->SetServer($host, $port)) {
			$ftp->quit();
			return 0;
		}
		
		if (!$ftp->connect()) {
			return -1;
		}
		
		if (!$ftp->login($username, $pass)) {
			$ftp->quit();
			return -2;
		}
		
		if(!empty($cd)){
			if(!$ftp->chdir($cd)){
				if(!$ftp->chdir(trim($cd, '/'))){
					return -3;
				}
				//return -3;
			}
		}
		
		if(!$ftp->SetType(BACKUPLY_FTP_AUTOASCII)){
		}
		
		if(!$ftp->Passive(TRUE)){
		}
	}

	// Class other than FTP
	if(empty($ftp)){
	
		// Initialize a Class
		$ftp = new $protocol();
		
		// Return if Class not found
		if(!is_object($ftp)){
			return -1;
		}
		
		// For SFTP authentication with keys or password
		if($protocol == 'softftpes' && !empty($pri)){
			$ftp->auth_pass = 0;
		}else{
			$ftp->auth_pass = 1;
		}

		// Can connect ?
		$ret = $ftp->connect($host, $port, $username, $pass, $pri, $passphrase);
		
		if(!$ret){
			return -2;
		}
		
		// Is directory present
		if(!empty($cd)){
			if(!$ftp->is_dir($cd)){
				return -3;
			}
		}
	}

	return $ftp;
}

// Creates stream wrapper and includes the associated class
function backuply_stream_wrapper_register($protocol, $classname){
	
	$protocols = array('dropbox', 'aws', 'caws', 'gdrive', 'softftpes', 'softsftp', 'webdav', 'onedrive', 'bcloud');
	
	if(!in_array($protocol, $protocols)){
		return true;
	}

	backuply_include_lib($protocol);
	
	$existing = stream_get_wrappers();
	if(in_array($protocol, $existing)){
		return true;
	}

	if(!stream_wrapper_register($protocol, $classname)){
		return false;
	}

	return true;
}

// Includes Lib Files
function backuply_include_lib($protocol) {

	if(!class_exists($protocol)){
		if(file_exists(BACKUPLY_DIR.'/lib/'.$protocol.'.php')) {
			include_once(BACKUPLY_DIR.'/lib/'.$protocol.'.php');
			return true;
		}

		if(defined('BACKUPLY_PRO') && defined('BACKUPLY_PRO_DIR') && file_exists(BACKUPLY_PRO_DIR . '/lib/' .$protocol . '.php')) {
			include_once(BACKUPLY_PRO_DIR . '/lib/' .$protocol . '.php');
			return true;
		}

		return false;
	}

	return true;
}

// Load Remote Backup class and initialize the class object
function backuply_load_remote_backup($backup_proto){
	
	if(!array_key_exists($backup_proto, backuply_get_protocols())){
		return false;
	}

	backuply_include_lib($backup_proto);
	
	$init_obj = new $backup_proto([]);
	
	return $init_obj;
}

// Gets data and path of the backup location
function backuply_load_remote_backup_info($protocol) {
	$remote = get_option('backuply_remote_backup_locs');
	
	foreach($remote as $k => $r) {
		if($r['protocol'] == $protocol) {
			return $r;
		}
	}
}

// Returns Remote loc details by id
function backuply_get_loc_by_id($id, $filter = array()){
	$remote = get_option('backuply_remote_backup_locs');

	foreach($remote as $k => $r) {
		if($k == $id) {
			// Removes the indexes that matches the filter
			foreach($r as $i => $k){
				if(in_array($i, $filter)) {
					unset($r[$i]);
				}
			}

			return $r;
		}
	}
	
	return false;
}

// Syncs available backup infos on a remote backup location to your site
function backuply_sync_remote_backup_infos($location_id){
	
	if($location_id === 'loc'){
		$synced_local = backuply_sync_local_backups();
		return true;
	}
	
	$locs = get_option('backuply_remote_backup_locs');
	
	if(empty($locs[$location_id])){
		return false;
	}
	
	$loc = $locs[$location_id];
	//backuply_print($loc);
	
	backuply_stream_wrapper_register($loc['protocol'], $loc['protocol']);

	$list = @scandir($loc['full_backup_loc']);
	
	if(empty($list)){
		return false;
	}
	
	foreach($list as $k => $v){
		
		$ext = pathinfo($v, PATHINFO_EXTENSION);
		
		$allowed_ext = array('php', 'info');
		$fexists = $v;

		if(strpos($v, '.info') !== FALSE){
			$fexists = basename($v, '.info') . '.php';
		}
		
		if(!in_array($ext, $allowed_ext) || file_exists(backuply_glob('backups_info') . '/'. $fexists)){
			//echo 'Continuing : '.$v.'<br>';
			continue;
		}
		//echo $v.'<br>';
		
		// Get the contents
		$fh = fopen($loc['full_backup_loc']. '/' . trim($v, '/'), 'rb');
		
		if(empty($fh)){
			continue;
		}
		
		$file = fread($fh, 8192);
		@fclose($fh);
		//backuply_print($file);
		
		if(empty($file)){
			continue;
		}
		
		$lines = explode("\n", $file);
		unset($lines[0]);
		
		$info = json_decode(implode("\n", $lines), true);
		//backuply_print($info);
		
		if(empty($info)){
			continue;
		}
		
		// Set the backup location ID
		$info['backup_location'] = $location_id;
		//backuply_print($info);
		
		$v = str_replace('.info', '.php', $v);
		
		// Write the file
		file_put_contents(backuply_glob('backups_info') .'/'.$v, "<?php exit();?>\n".json_encode($info, JSON_PRETTY_PRINT));
		
	}
	
	return true;
	
}

function backuply_untar_archive($tarname, $untar_path, $file_list = array(), $handle_remote = false){
	global $globals, $can_write, $ftp;

	// Create directory if not there
	if(!is_dir($untar_path)){
		@mkdir($untar_path);
	}
	$tar_archive = new backuply_tar($tarname, '', $handle_remote);
	
	if(empty($file_list)){
		$res = $tar_archive->extractModify($untar_path, '');
	}else{
		$res = $tar_archive->extractList($file_list, $untar_path);
	}
	
	if(!$res){
		return false;	
	}
	
	return true;	
}

function backuply_sync_local_backups(){
	
	$backups_dir = backuply_glob('backups');
	$backups_info_dir = backuply_glob('backups_info');
	
	if(!file_exists($backups_dir) || !file_exists($backups_info_dir)){
		return false;
	}

	$backups = @scandir($backups_dir);

	$backup_info_name = '';
	$backup_file_name = '';

	foreach($backups as $backup){
		if(in_array($backup, ['.', '..', 'index.html', 'index.php', 'tmp'])){
			continue;
		}
		
		$info_file_name = str_replace('.tar.gz', '.php', $backup);
		
		if(!file_exists($backups_info_dir . '/' . $info_file_name)){
			backuply_create_info_file($info_file_name, $backup);
		}
	}

}

// Creates new info file, from the info file in that backup tar.gz
function backuply_create_info_file($backup_info_name, $backup_file_name){

	$backups_dir = backuply_glob('backups');
	$backups_info_dir = backuply_glob('backups_info');

	if(empty($backup_info_name) || empty($backup_file_name)){
		return true;
	}

	include_once BACKUPLY_DIR . '/backuplytar.php'; // Including the Backuply TAR class.

	$backup_path = $backups_dir . '/' .$backup_file_name;
	backuply_untar_archive($backup_path, $backups_dir .'/tmp/', array($backup_info_name));

	$archived_info = $backups_dir .'/tmp/' .$backup_info_name;
	
	if(!file_exists($archived_info)){
		return true;
	}
	
	$content = file_get_contents($archived_info);

	if(!preg_match('/{.*}/s', $content, $json_info) || empty($json_info[0])){
		return true;
	}

	$info_arr = json_decode($json_info[0], true);

	if(empty($info_arr['size'])){
		$info_arr['size'] = filesize($backup_path);
	}

	file_put_contents($backups_info_dir . '/'. $backup_info_name, "<?php exit();?>\n".json_encode($info_arr, JSON_PRETTY_PRINT));
	
	@unlink($archived_info);

	return true;
}

// Syncs available backup logs on a remote backup location to your site
function backuply_sync_remote_backup_logs($location_id, $fname){
	
	if(empty($location_id)){
		return false;
	}
	
	$locs = get_option('backuply_remote_backup_locs');
	
	if(empty($locs[$location_id])){
		return false;
	}
	
	$loc = $locs[$location_id];
	
	backuply_stream_wrapper_register($loc['protocol'], $loc['protocol']);

	$list = @scandir($loc['full_backup_loc']);
	
	if(empty($list)){
		return false;
	}
	
	foreach($list as $k => $v){
		
		// Changing log name to log file for remote loc
		$fname = str_replace('_log.php', '.log', $fname);
		$ext = pathinfo($v, PATHINFO_EXTENSION);

		if($ext != 'log' || $fname != trim($v, '/') || file_exists(BACKUPLY_BACKUP_DIR . $v)){
			continue;
		}
		
		// Get the contents
		$fh = fopen($loc['full_backup_loc'].'/'.trim($v, '/'), 'rb');
		
		if(empty($fh)){
			return false;
		}
		
		$file = '';

		while(!feof($fh)){
			$file .= fread($fh, 8192);
		}
		
		@fclose($fh);

		if(empty($file)){
			return false;
		}

		// Changing log to php file for local
		$v = str_replace('.log', '_log.php', $v);
		
		// Write the file
		file_put_contents(BACKUPLY_BACKUP_DIR . $v, $file);
	
	}
	
	return true;
	
}

//Fix the serialization in Cloned DB Tables
function backuply_wp_clone_sql($table, $field_prefix, $keepalive, $i = null){

	global $wpdb;

	if(empty($wpdb)){
		backuply_log('Fix Serialization failed: unable to connect to the database');
		return false;
	}
	
	if(empty($table) || empty($field_prefix)){
		return false;
	}
	
	$possible_tables = ['options', 'postmeta', 'commentmeta'];
	$possible_fields = ['option', 'meta'];

	// We make sure here that we do not process any unwanted data.
	if(!in_array($table, $possible_tables, true) || !in_array($field_prefix, $possible_fields, true)){
		return false;
	}

	if($wpdb->has_cap('identifier_placeholders')){
		$cnt_qry = $wpdb->prepare("SELECT count(%i) as %i FROM %i", [$field_prefix.'_id', 'count_'.$field_prefix, $wpdb->prefix.$table]);
	} else {
		$cnt_qry = $wpdb->prepare("SELECT count(%s) as %s FROM `".$wpdb->prefix.$table . "`", [$field_prefix.'_id', 'count_'.$field_prefix]);
	}
	$result = $wpdb->get_results($cnt_qry);
	$result = json_decode(json_encode($result[0]), true);
	$cnt_res = $result['count_'.$field_prefix];
	
	$count = 10000;
	$limit = 0;

	if(is_null($i)){
		$i = $cnt_res;
		backuply_status_log('Repairing '. $wpdb->prefix.$table, 'repairing', 80);
	}
	
	backuply_status_log($i . ' Rows left to repair in ' . $wpdb->prefix.$table, 'working', 89);
	
	while($i >= 0){
		
		if(time() > $keepalive){
			return (int) $i;
		}

		if($wpdb->has_cap('identifier_placeholders')){
			$query = $wpdb->prepare("SELECT %i, %i FROM %i ORDER BY %i LIMIT %d, %d", [$field_prefix.'_id', $field_prefix.'_value', $wpdb->prefix.$table, $field_prefix.'_id', $limit, $count]);
		} else {
			$query = $wpdb->prepare("SELECT `".$field_prefix."_id`, `".$field_prefix."_value` FROM `".$wpdb->prefix.$table."` ORDER BY %s LIMIT %d, %d", [$field_prefix.'_id', $limit, $count]);
		}

		$result = $wpdb->get_results($query);
		
		// If there are no more rows we need to break the loop
		if(empty($result[0])){
			break;
		}
		
		foreach($result as $rk => $rv){
			$rv = json_decode(json_encode($rv), true);
			
			$update_query = '';
			$sresult = '';
			// This data should be serialized
			if(preg_match('/^a:(.*?):{/is', $rv[$field_prefix.'_value']) || preg_match('/^O:(.*?):{/is', $rv[$field_prefix.'_value'])){
				
				if(preg_match('/^utf8(.*?)/is', $wpdb->charset) && empty($conn)){
					$encoding = mb_detect_encoding($rv[$field_prefix.'_value']);
					if(empty($encoding)){
						$encoding = 'ISO-8859-1';
					}

					$_unserialize = backuply_unserialize(mb_convert_encoding($rv[$field_prefix.'_value'], 'UTF-8', 'auto'));
					$updated_data = (!function_exists('get_magic_quotes_gpc') || !get_magic_quotes_gpc()) ? addslashes(mb_convert_encoding(serialize($_unserialize), $encoding, 'UTF-8')) : mb_convert_encoding(serialize($_unserialize), $encoding, 'UTF-8');
				}else{
					$_unserialize = backuply_unserialize($rv[$field_prefix.'_value']);
					$updated_data = (!function_exists('get_magic_quotes_gpc') || !get_magic_quotes_gpc()) ? addslashes(serialize($_unserialize)) : serialize($_unserialize);
				}
				
				$update_query = "UPDATE `".$wpdb->prefix.$table."` SET `".$field_prefix."_value` = '".$updated_data."' WHERE `".$field_prefix."_id` = '".$rv[$field_prefix.'_id']."';";
				
				$sresult = $wpdb->query($update_query);
			}

			$i--;
			$limit++;
		}
	}
	
	return true;
}

/**
 * Callback for fixing any broken serialized string
 *
 * @package      string 
 * @author       Brijesh Kothari
 * @param        array $matches
 * @return       string Returns the fixed serialize content
 * @since     	 5.3.1
 * NOTE : Any changes in this function will affect anywhere this function is used as a callback
 */
function backuply_fix_serialize_callback($matches){
	
	//r_print($matches);
	
	// We are not using soft_is_serialized_str() because that checks for ; or } at the end and our data can be a:2:{s:3:"three
	if(preg_match('/^a:(.*?):{/is', $matches[2]) || preg_match('/^O:(.*?):/is', $matches[2])){
		return $matches[0];
	}
	
	return 's:'.strlen($matches[2]).':"'.$matches[2].'";';
}

/**
 * Unserialize a string and also fixes any broken serialized string before unserializing
 *
 * @package      string 
 * @author       Pulkit Gupta
 * @param        string $str
 * @return       array Returns an array if successful otherwise false 
 * @since     	 1.0
 */
// Note : This will not work for a serialized string in an array key
function backuply_unserialize($str){

	$var = @unserialize($str);
	
	if(empty($var)){
		
		// NOTE : Any changes in this pattern will need to be handled in callback function as well
		$str = preg_replace_callback('/s:(\d+):"(.*?)";(?=([:]|(?<=;)\}(?!\.)|a:|s:|S:|b:|d:|i:|o:|O:|C:|r:|R:|N;))/s', 'backuply_fix_serialize_callback', $str);
		
		$var = @unserialize($str);
	
	}
	
	//If it is still empty false
	if($var === false){
	
		return false;
	
	}else{
	
		return $var;
	
	}

}

// Renames backuply_log file to show last logs.
function backuply_copy_log_file($is_restore = false, $file_name = ''){
	
	if(empty($file_name)){
		$file_name = 'backuply_backup';
	}
	
	$copy_to = empty($is_restore) ? $file_name . '_log.php' : 'backuply_restore_log.php';
	copy(BACKUPLY_BACKUP_DIR . 'backuply_log.php', BACKUPLY_BACKUP_DIR . $copy_to);

}

function backuply_pattern_type_text($type) {
		
	if(empty($type)){
		return esc_html__('No type found!', 'backuply');
	}
		
	$types = array(
		'extension' => esc_html__('With specific extension', 'backuply'),
		'beginning' => esc_html__('At beginning', 'backuply'),
		'end' => esc_html__('At end', 'backuply'),
		'anywhere' => esc_html__('Anywhere', 'backuply')
	);
		
	return $types[$type];
}

function backuply_init_restore($info){
	
	global $wpdb;
	
	$backuply_backup_dir = backuply_cleanpath(BACKUPLY_BACKUP_DIR);
	
	if(!is_dir($backuply_backup_dir.'/restoration')) {
		mkdir($backuply_backup_dir.'/restoration', 0755, true);
	}
	
	$myfile = fopen($backuply_backup_dir.'/restoration/restoration.php', 'w') or die('Unable to open restoaration.php file !');
	$txt = time();
	fwrite($myfile, $txt);
	fclose($myfile);

	$info['plugin_dir'] = backuply_cleanpath(BACKUPLY_DIR);
	$info['backuly_backup_dir'] = $backuply_backup_dir;
	$info['softdb'] = $wpdb->dbname;
	$info['softdbhost'] = $wpdb->dbhost;
	$info['softdbuser'] = $wpdb->dbuser;
	$info['softdbpass'] = $wpdb->dbpassword;
	$info['tbl_prefix'] = $wpdb->prefix;
	$info['backuply_version'] = BACKUPLY_VERSION;

	backuply_create_log_file(); // Create a log file.
	backuply_status_log('Starting Restoring your backup', 'info', 10);
	wp_schedule_single_event(time() + BACKUPLY_TIMEOUT_TIME, 'backuply_timeout_check', array('is_restore' => true));
	backuply_restore_curl($info);

}

function backuply_restore_curl($info = array()) {
	global $wpdb, $backuply;

	$backup_file_loc = $info['backup_file_loc'];
	$info['site_url'] = site_url();
	$info['to_email'] = get_option('backuply_notify_email_address');
	$info['admin_email'] = get_option('admin_email');
	$info['ajax_url'] = admin_url('admin-ajax.php');
	$info['debug_mode'] = $backuply['debug_mode'];
	$info['user_id'] = get_current_user_id();
	$info['exclude_db'] = !empty($backuply['excludes']['db']) ? $backuply['excludes']['db'] : array();

	$config = backuply_get_config();
	
	if(empty($config['RESTORE_KEY'])) {
		return;
	}
	
	$info['backup_dir'] = backuply_glob('backups');

	// Setting backup_dir if its remote location
	if(!empty($info['loc_id'])){
		$backuply_remote_backup_locs = get_option('backuply_remote_backup_locs');
		$loc_id = $info['loc_id'];
		$info['backup_dir'] = $backuply_remote_backup_locs[$loc_id]['full_backup_loc'];
		backuply_set_restoration_file($backuply_remote_backup_locs[$loc_id]);
	}

	$info['restore_key'] = urlencode($config['RESTORE_KEY']);
	$tmp_restore_file = ABSPATH . '/backuply-restore.php';
	$tmp_restore_include = "<?php\ndefine('BACKUPLY_DIR_FOR_RESTORE', '".BACKUPLY_DIR."');\ninclude_once '".BACKUPLY_DIR."/restore_ins.php';";

	if(file_put_contents($tmp_restore_file, $tmp_restore_include)){
		$restore_url = site_url() . '/backuply-restore.php';
	} else {
		$restore_url = BACKUPLY_URL . '/restore_ins.php';
	}

	$info['restore_curl_url'] = $restore_url;
	
	$args = array(
		'body' => $info,
		'timeout' => 0.01,
		'blocking' => false,
		'sslverify' => false,
		'headers' => [
			'Referer' => (!empty($_SERVER['REQUEST_SCHEME']) ? $_SERVER['REQUEST_SCHEME'] : 'http') .'://'. $_SERVER['SERVER_NAME'],
		],
		'user-agent' => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36',
	);

	wp_remote_post($info['restore_curl_url'], $args);
}

// Shifts the Config keys from file to db for user below 1.2.0.
function backuply_keys_to_db(){
	$config = backuply_get_config();
	if(isset($config['RESTORE_KEY'])){
		unset($config['RESTORE_KEY']); // Restore Key gets generated every time a restore is created.
	}

	update_option('backuply_config_keys', $config);
	unlink(BACKUPLY_BACKUP_DIR . '/backuply_config.php');
}

// Create a status lock key
function backuply_set_status_key(){
	
	$key = wp_generate_password(32, false);

	file_put_contents(BACKUPLY_BACKUP_DIR . '/status_key.php', "<?php exit();?>\n". $key);
	
	@chmod(BACKUPLY_BACKUP_DIR . '/status_key.php', 0600);
}

function backuply_get_status_key(){

	$status_file = BACKUPLY_BACKUP_DIR . 'status_key.php';

	if(!file_exists($status_file)){
		return false;
	}

	$content = file_get_contents($status_file);
	$content = str_replace("<?php exit();?>\n", '', $content);
	
	return $content;
}

function backuply_get_quota($protocol){

	backuply_stream_wrapper_register($protocol, $protocol);
	
	if(class_exists($protocol) && method_exists($protocol, 'get_quota')){
		$class = new $protocol();
		
		$info = backuply_load_remote_backup_info($protocol);
		$quota = $class->get_quota($info['full_backup_loc']);

		if(empty($quota)){
			return false;
		}
		
		return $quota;
	}
	
	return false;
}

function backuply_schedule_quota_updation($location){

	$storage_loc = sanitize_text_field($location);
	
	if(empty($storage_loc)){
		backuply_log(__('No Storage location provided', 'backuply'));
		return;
	}

	$quota = backuply_get_quota($storage_loc);
	
	if(empty($quota)){
		backuply_log('Scheduled Quota Update: Nothing returned in quota fetch!');
		return;
	}
	
	$info = get_option('backuply_remote_backup_locs', []);
	
	if(!empty($info)){
		foreach($info as $key => $locs){
			if($locs['protocol'] === $storage_loc){
				$info[$key]['backup_quota'] = (int) $quota['used'];
				$info[$key]['allocated_storage'] = (int) $quota['total'];
			}
		}
		
		update_option('backuply_remote_backup_locs', $info, false);
	}

	backuply_log('Scheduled Quota Update: Fetched Quota updated successfully!');
}

// Checks every day if there is any file inside tmp or a backup with dot(.) at start
// and have not been updated since last 24 hours, then delete them.
// And also deletes any softperms, softsql residue left
function backuply_delete_tmp(){

	$backup_folder = backuply_glob('backups');

	// Deleting files with dot(.) at start
	$files = glob($backup_folder .'/.*.tar.gz');

	if(!empty($files)){
		foreach($files as $file){
			if(!file_exists($file) || is_dir($file)){
				continue;
			}

			if(filemtime($file) < (time() - 86400)){
				try{
					unlink($file);
					backuply_log('Deletion unsuccessful: '.$file);
				}catch(Exception $e){
					backuply_log('Deletion Error: ' . $e->getMessage());
				}
			}
		}
	}

	// Deleting folders in tmp
	$folders = glob($backup_folder .'/tmp/*/');

	if(!empty($folders)){
		foreach($folders as $folder){
			// We dont need to delete any file in this folder.
			if(!is_dir($folder)){
				continue;	
			}

			if(filemtime($folder) < (time() - 86400)){
				try{
					global $wp_filesystem;

					include_once ABSPATH . 'wp-admin/includes/file.php';
					WP_Filesystem();

					$wp_filesystem->rmdir($folder, true);
				} catch(Exception $e){
					backuply_log('Deletion Error: '. $e->getMessage());
				}
			}
		}
	}
	
	// Deletes any restore residue
	if(!file_exists(BACKUPLY_BACKUP_DIR .'/restoration/restoration.php')){
		if(file_exists(ABSPATH .'/softperms.txt')){
			unlink(ABSPATH .'/softperms.txt');
		}

		if(file_exists(ABSPATH .'/softsql.sql')){
			unlink(ABSPATH .'/softsql.sql');
		}

		if(file_exists(ABSPATH .'/softver.txt')){
			unlink(ABSPATH .'/softver.txt');
		}
	}
}

function backuply_add_mime_types($mimes) {

    if(!array_key_exists('tar', $mimes)){
        $mimes['tar'] =  'application/x-tar';
    }

    if(!array_key_exists('gz|gzip', $mimes) && !array_key_exists('gz', $mimes)){
        $mimes['gz|gzip'] = 'application/x-gzip';
    }

    return $mimes;
}

function backuply_sanitize_filename($filename){
	$filename = sanitize_file_name($filename);
	// We need to remove "_" as sanitize_file_name adds it if the file 
	// have more than 2 extensions, which in our case happens sometimes, if the 
	// URL of the website, has a sub domain or has TLD as .co.in or similar.
	$filename = str_replace('_.', '.', $filename);

	return $filename;
}

function backuply_direct_download_file(){
	check_admin_referer('backuply_download_security', 'security');

	if(!current_user_can('manage_options')){
		wp_die('You do not have required privilege to download the file');
	}
	
	@set_time_limit(0);

	$filename = backuply_optget('backup_name');
	$filename = backuply_sanitize_filename($filename);
	$backups_dir = backuply_glob('backups');
	
	$file_path = $backups_dir . '/'. $filename;

	if(!file_exists($file_path)){
		wp_die('File does not exists');
	}
	
	if(ob_get_level()){
		$ob_levels = min(5, (int) ob_get_level());
		for($i = 1; $i<= $ob_levels; $i++){
			@ob_end_clean();
		}
	}

	if(ob_get_level()){
		@ob_end_clean();
	}

	// Get the file size
	$file_size = filesize($file_path);

	// Handle range requests
	header('Content-Type: application/octet-stream');
	header('Content-Disposition: attachment; filename="' . basename($filename) . '"');
	header('Content-Transfer-Encoding: binary');
	header('Content-Length: ' . $file_size);
	header('Last-Modified: ' . gmdate('D, d M Y H:i:s T', filemtime($file_path)));
	header('Expires: 0');
	header('Cache-Control: public, must-revalidate, max-age=0');
	header('Pragma: no-cache');

	readfile($file_path);
	die();
}

// Returns the Security key
function backuply_status_config(){

	$config_file = BACKUPLY_BACKUP_DIR . '/status_key.php';
	
	if(!file_exists($config_file) || 0 == filesize($config_file)) {
		return false;
	}

	$fp = file($config_file);

	if(empty($fp[1])){
		return '';
	}

	$status_key = $fp[1];

	return $status_key;
}

// Verifies the backuply key
function backuply_verify_status_log(){
	
	if(empty($_REQUEST['status_key'])) {
		return false;
	}
	
	$status_lock = BACKUPLY_BACKUP_DIR. '/status.lock';
	
	if(!file_exists($status_lock) || (time() - filemtime($status_lock) > 1800)){
		return false;
	}

	$status_key = backuply_status_config();
	
	if(!$status_key) {
		return false;
	}
	
	$request_key = sanitize_text_field(wp_unslash($_REQUEST['status_key']));

	if(urldecode($request_key) == $status_key) {
		return true;
	}

	return false;
}

// LiteSpeed kills long running processes, and backups need to run long
// So we have to prevent the default behaviour of LiteSpeed by using noabort rule.
function backuply_add_litespeed_noabort(){

	if(!extension_loaded('litespeed')){
		return;
	}

	$htaccess_file = ABSPATH .'.htaccess';

	if(!file_exists($htaccess_file) || !is_writable($htaccess_file)){
		return;
	}

	$rules = file_get_contents($htaccess_file);

	if(!preg_match('/noabort/i', $rules)){
		$rules .= "\n". "\n";
		$rules .= '# BEGIN LiteSpeed'."\n";
		$rules .= '<IfModule Litespeed>'."\n";
		$rules .= 'SetEnv noabort 1'."\n";
		$rules .= '</IfModule>'."\n";
		$rules .= '# END LiteSpeed'."\n";

		file_put_contents($htaccess_file, $rules);
	}
	
}