<?php
// Helper functions for BackupBuddy.
// TODO: Eventually break out of a lot of these from BB core. Migrating from old framework to new resulted in this mid-way transition but it's a bit messy...

class backupbuddy_core {

	const MAX_SECONDS_TO_KEEP_ORPHANED_FILEOPTIONS_FILES = 2592000; // 30 days - Once this time has passed then the housekeeping cleanup function will be given the go-ahead to delete fileoptions files that have no local backup zip file that matches their serial. We keep these for a while so the Recent Backups page will keep them in its list.
	private static $_cachedLogDirectory = ''; // Cached log dir for getLogDirectory() to prevent having to call WP to retrieve.
	
	public static $warn_plugins = array(
		'w3-total-cache.php' => 'W3 Total Cache',
		'wp-cache.php' => 'WP Super Cache',
	);


	public static function prettyFunctionTitle( $function, $args = '' ) {

		if ( $function == 'backup_create_database_dump' ) {
			$functionTitle = 'Backing up database';
			if ( '' != $args ) {
				$subFunctionTitle = 'Tables: ' . implode( ', ', $args[0] );
			}
		} elseif ( $function == 'backup_zip_files' ) {
			$functionTitle = 'Zipping up files';
		} elseif ( $function == 'integrity_check' ) {
			$functionTitle = 'Verifying backup file integrity';
		} elseif ( $function == 'post_backup' ) {
			$functionTitle = 'Cleaning up';
		} elseif ( $function == 'ms_download_extract_wordpress' ) {
			$functionTitle = 'Downloading WordPress core files from wordpress.org';
		} elseif ( $function == 'ms_create_wp_config' ) {
			$functionTitle = 'Generating standard wp-config.php for export';
		} elseif ( $function == 'ms_copy_plugins' ) {
			$functionTitle = 'Copying plugins';
		} elseif ( $function == 'ms_copy_themes' ) {
			$functionTitle = 'Copying themes';
		} elseif ( $function == 'ms_copy_media' ) {
			$functionTitle = 'Copying media';
		} elseif ( $function == 'ms_copy_users_table' ) {
			$functionTitle = 'Copying users';
		} elseif ( $function == 'ms_cleanup' ) {
			$functionTitle = 'Cleaning up Multisite-specific temporary data';
		} else {
			$functionTitle = $function;
		}

		return $functionTitle;
	} // end prettyFunctionTitle().

	/*	is_network_activated()
	 *	
	 *	Returns a boolean indicating whether a plugin is network activated or not.
	 *	
	 *	@return		boolean			True if plugin is network activated, else false.
	 */
	public static function is_network_activated() {

		if ( !function_exists( 'is_plugin_active_for_network' ) ) { // Function is not available on all WordPress pages for some reason according to codex.
			require_once( ABSPATH . '/wp-admin/includes/plugin.php' );
		}
		if ( is_plugin_active_for_network( basename( pb_backupbuddy::plugin_path() ) . '/' . pb_backupbuddy::settings( 'init' ) ) ) { // Path relative to wp-content\plugins\ directory.
			return true;
		} else {
			return false;
		}

	} // End is_network_activated().



	/*	backup_integrity_check()
	 *	
	 *	Scans a backup file and saves the result in data structure. Checks for key files & that .zip can be read properly. Stores results with details in data structure.
	 *	
	 *	@param		string		$file			Full pathname & filename to backup file to check.
	 *	@param		obj			$fileoptions	fileoptions object currently holding the fileoptions file open, if any.
	 *	@param		array 		$options		Array of options.
	 *	@return		array						Returns integrity data array.
	 */
	public static function backup_integrity_check( $file, $fileoptions = '', $options = array(), $skipLogRedirect = false ) {
		
		return include( '_integrityCheck.php');
		
	} // End backup_integrity_check().



	/*	get_serial_from_file()
	 *	
	 *	Returns the backup serial based on the filename.
	 *	
	 *	@param		string		$file		Filename containing a serial to extract.
	 *	@return		string					Serial found. Empty string if unable to find serial.
	 */
	public static function get_serial_from_file( $file ) {
		
		if ( false === ( $dashpos = strrpos( $file, '-' ) ) ) {
			return '';
		}
		$serial = $dashpos + 1;
		$serial = substr( $file, $serial, ( strlen( $file ) - $serial - 4 ) );
		
		return $serial;
		
	} // End get_serial_from_file().



	/**
	 * versions_confirm()
	 *
	 * Check the version of an item and compare it to the minimum requirements BackupBuddy requires.
	 *
	 * @param		string		$type		Optional. If left blank '' then all tests will be performed. Valid values: wordpress, php, ''.
	 * @param		boolean		$notify		Optional. Whether or not to alert to the screen (and throw error to log) of a version issue.\
	 * @return		boolean					True if the selected type is a bad version
	 */
	public static function versions_confirm( $type = '', $notify = false ) {

		$bad_version = false;

		if ( ( $type == 'wordpress' ) || ( $type == '' ) ) {
			global $wp_version;
			if ( version_compare( $wp_version, pb_backupbuddy::settings( 'wp_minimum' ), '<=' ) ) {
				if ( $notify === true ) {
					pb_backupbuddy::alert( sprintf( __('ERROR: BackupBuddy requires WordPress version %1$s or higher. You may experience unexpected behavior or complete failure in this environment. Please consider upgrading WordPress.', 'it-l10n-backupbuddy' ), self::_wp_minimum) );
					pb_backupbuddy::log( 'Unsupported WordPress Version: ' . $wp_version , 'error' );
				}
				$bad_version = true;
			}
		}
		if ( ( $type == 'php' ) || ( $type == '' ) ) {
			if ( version_compare( PHP_VERSION, pb_backupbuddy::settings( 'php_minimum' ), '<=' ) ) {
				if ( $notify === true ) {
					pb_backupbuddy::alert( sprintf( __('ERROR: BackupBuddy requires PHP version %1$s or higher. You may experience unexpected behavior or complete failure in this environment. Please consider upgrading PHP.', 'it-l10n-backupbuddy' ), PHP_VERSION ) );
					pb_backupbuddy::log( 'Unsupported PHP Version: ' . PHP_VERSION , 'error' );
				}
				$bad_version = true;
			}
		}

		return $bad_version;

	} // End versions_confirm().



	/* getBackupDirectory()			backupbuddy_core::getBackupDirectory()
	 *
	 * Retrieve directory for storing backups within.
	 *
	 * @return	string		Full path to directory, including trailing slash.
	 *
	 */
	public static function getBackupDirectory() {
		if ( '' == pb_backupbuddy::$options['backup_directory'] ) {
			$dir = self::_getBackupDirectoryDefault();
		} else {
			$dir = pb_backupbuddy::$options['backup_directory'];
		}
		return $dir;
	}



	/* getLogDirectory()			backupbuddy_core::getLogDirectory()
	 *
	 * Retrieve directory for storing logs within. Caches 
	 *
	 * @return	string		Full path to directory, including trailing slash.
	 *
	 */
	public static function getLogDirectory() {
		if ( '' != self::$_cachedLogDirectory ) {
			return self::$_cachedLogDirectory;
		}
		if ( defined( 'PB_STANDALONE' ) && ( true === PB_STANDALONE ) ) {
			return ABSPATH . 'importbuddy/';
		}
		
		$uploads_dirs = wp_upload_dir();
		self::$_cachedLogDirectory = $uploads_dirs['basedir'] . '/pb_backupbuddy/';
		return self::$_cachedLogDirectory;
	} // End getLogDirectory().



	/* getTempDirectory()			backupbuddy_core::getTempDirectory()
	 *
	 * Retrieve temporary directory for storing temporary files within.
	 *
	 * @return	string		Full path to directory, including trailing slash.
	 *
	 */
	// backupbuddy_core::getTempDirectory()
	public static function getTempDirectory() {
		return ABSPATH . 'wp-content/uploads/backupbuddy_temp/';
	} // End getTempDirectory().



	/* _getBackupDirectoryDefault()
	 *
	 * Default directory backups will be stored in. getBackupDirectory() uses this as the default if no path is specifically set.
	 *
	 * @return	string		Full path to directory, including trailing slash.
	 *
	 */
	public static function _getBackupDirectoryDefault() {
		if ( defined( 'PB_IMPORTBUDDY' ) && ( true === PB_IMPORTBUDDY ) ) {
			return ABSPATH;
		}
		$uploads_dirs = wp_upload_dir();
		return $uploads_dirs['basedir'] . '/backupbuddy_backups/';
	} // End _getBackupDirectoryDefault().



	/*	get_directory_exclusions()
	 *	
	 *	Get sanitized directory exclusions. Exclusions are relative to site root (ABSPATH). See important note below!
	 *	IMPORTANT NOTE: Cannot exclude the temp directory here as this is where SQL and DAT files are stored for inclusion in the backup archive.
	 *	
	 *	@param		array 	$profile		Profile array of data.
	 *	@param		bool	$trim_suffix	True (default) if trailing slash should be trimmed from directories
	 *	@param		string	$serial			Optional serial of current backup. By default all subdirectories within the backupbuddy_temp dir are explicitly excluded. Specifying allows this serial subdirectory to not be excluded.
	 *	@return		array					Array of directories to exclude.
	 */
	public static function get_directory_exclusions( $profile, $trim_suffix = true, $serial = '' ) {
		
		$profile = array_merge( pb_backupbuddy::settings( 'profile_defaults' ), $profile );
		
		// Get initial array.
		$exclusions = trim( $profile['excludes'] ); // Trim string.
		$exclusions = preg_split('/\n|\r|\r\n/', $exclusions ); // Break into array on any type of line ending.
		
		
		// Backup dir can be custom set and even migrated over to have weird slash mismatch issues. Sanitize it.
		$backupDir = '/' . ltrim( str_replace( ABSPATH, '', self::getBackupDirectory() ), '\\/' ); // BackupBuddy backup storage directory. Normally this should be all good.
		pb_backupbuddy::status( 'details', 'Initially calculated relative backup storage directory: `' . $backupDir . '.' );
		$normedBackupDir = str_replace( '\\', '/', $backupDir );
		$normedABSPATH = str_replace( '\\', '/', ABSPATH );
		if ( FALSE !== ( stristr( $normedBackupDir, $normedABSPATH ) ) ) { // ABSPATH still exists in the path due to some weird slash direction mismatch. Try to yank it out.
			pb_backupbuddy::status( 'details', 'ABSPATH `' . ABSPATH . '` still found backup directory path `' . $normedBackupDir . '` so it is still not relative. Using normalized ABSPATH `' . $normedABSPATH  . '` and normalized backup directory `' . $normedBackupDir . '` to make relative.' );
			$backupDir = str_replace( $normedABSPATH, $normedBackupDir, $backupDir );
		}
		$exclusions[] = $backupDir;
		
		
		$exclusions[] = '/' . ltrim( str_replace( ABSPATH, '', self::getLogDirectory() ), '\\/' ); // BackupBuddy logs & fileoptions data.
		$exclusions[] = '/importbuddy/'; // Exclude importbuddy directory in root.
		$exclusions[] = '/importbuddy.php'; // Exclude importbuddy.php script in root.
		
		// Exclude all temp directories within backupbuddy_temp, except any subdirectories containing the serial specified (if any).
		$tempDirs = glob( self::getTempDirectory() . '*', GLOB_ONLYDIR );
		if ( ! is_array( $tempDirs ) ) {
			$tempDirs = array();
		}
		foreach( $tempDirs as $tempDir ) {
			if ( ( '' == $serial ) || ( false === strstr( $tempDir, $serial ) ) ) { // If no specific serial supplied OR this dir does not contain the serial, exclude it.
				pb_backupbuddy::status( 'details', 'Excluding additional temp directory subdir: `' . $tempDir . '`.' );
				$exclusions[] = '/' . trim( str_replace( ABSPATH, '', $tempDir ), '\\/' ) . '/';
			}
		}
		
		// Clean up & sanitize array.
		if ( $trim_suffix ) {
			array_walk( $exclusions, create_function( '&$val', '$val = rtrim( trim( $val ), \'/\' );' ) ); // Apply trim to all items within.
		} else {
			array_walk( $exclusions, create_function( '&$val', '$val = trim( $val );' ) ); // Apply (whitespace-only) trim to all items within.		
		}
		$exclusions = array_filter( $exclusions, 'strlen' ); // Remove any empty / blank lines.
		
		$exclusions = apply_filters( 'backupbuddy_zip_exclusions', $exclusions );
		pb_backupbuddy::status( 'details', 'Initial zip exclusions (after filter): `' . implode( '; ', $exclusions ) . '`.' );
		
		return $exclusions;
		
	} // End get_directory_exclusions().



	/*	mail_error()
	 *	
	 *	Sends an error email to the defined email address(es) on settings page.
	 *	
	 *	@param		string			$message	Message to be included in the body of the email.
	 *	@param		string			$override_recipient	Email address(es) to send to instead of the normal recipient.
	 *	@param		string|array 	String or array of filename(s) to send as email attachments.
	 *	@return		null
	 */
	public static function mail_error( $message, $override_recipient = '', $attachments = array() ) {

		if ( !isset( pb_backupbuddy::$options ) ) {
			pb_backupbuddy::load();
		}

		$subject = pb_backupbuddy::$options['email_notify_error_subject'];
		$body = pb_backupbuddy::$options['email_notify_error_body'];

		$replacements = array(
			'{site_url}' => site_url(),
			'{backupbuddy_version}' => pb_backupbuddy::settings( 'version' ),
			'{current_datetime}' => date(DATE_RFC822),
			'{message}' => $message
		);

		foreach( $replacements as $replace_key => $replacement ) {
			$subject = str_replace( $replace_key, $replacement, $subject );
			$body = str_replace( $replace_key, $replacement, $body );
		}

		$email = pb_backupbuddy::$options['email_notify_error'];
		if ( $override_recipient != '' ) {
			$email = $override_recipient;
			pb_backupbuddy::status( 'details', 'Overriding email recipient to: `' . $override_recipient . '`.' );
		}
		pb_backupbuddy::status( 'details', 'Sending email error notification with subject `' . $subject . '` to recipient(s): `' . $email . '`.' );
		if ( !empty( $email ) ) {
			if ( pb_backupbuddy::$options['email_return'] != '' ) {
				$email_return = pb_backupbuddy::$options['email_return'];
			} else {
				$email_return = get_option('admin_email');
			}

			$result = wp_mail( $email, $subject, $body, 'From: BackupBuddy <' . $email_return . ">\r\n".'Reply-To: '.get_option('admin_email')."\r\n", $attachments );
			if ( false === $result ) {
				pb_backupbuddy::status( 'error', 'Error #45443554: Unable to send error email with WordPress wp_mail(). Verify WordPress & Server settings.' );
			}
		}

	} // End mail_error().



	/*	mail_notify_scheduled()
	 *	
	 *	Sends a message email to the defined email address(es) on settings page.
	 *	
	 *	@param		string		$start_or_complete	Whether this is the notifcation for starting or completing. Valid values: start, complete
	 *	@param		string		$message			Message to be included in the body of the email.
	 *	@return		null
	 */
	public static function mail_notify_scheduled( $serial, $start_or_complete, $message ) {

		if ( !isset( pb_backupbuddy::$options ) ) {
			pb_backupbuddy::load();
		}

		if ( $start_or_complete == 'start' ) {
			$email = pb_backupbuddy::$options['email_notify_scheduled_start'];

			$subject = pb_backupbuddy::$options['email_notify_scheduled_start_subject'];
			$body = pb_backupbuddy::$options['email_notify_scheduled_start_body'];

			$replacements = array(
				'{site_url}' => site_url(),
				'{backupbuddy_version}' => pb_backupbuddy::settings( 'version' ),
				'{current_datetime}' => date(DATE_RFC822),
				'{message}' => $message
			);
		} elseif ( $start_or_complete == 'complete' ) {
			$email = pb_backupbuddy::$options['email_notify_scheduled_complete'];

			$subject = pb_backupbuddy::$options['email_notify_scheduled_complete_subject'];
			$body = pb_backupbuddy::$options['email_notify_scheduled_complete_body'];

			$archive_file = '';
			require_once( pb_backupbuddy::plugin_path() . '/classes/fileoptions.php' );
			pb_backupbuddy::status( 'details', 'Fileoptions instance #37.' );
			$backup_options = new pb_backupbuddy_fileoptions( backupbuddy_core::getLogDirectory() . 'fileoptions/' . $serial . '.txt', $read_only = true, $ignore_lock = true );
			if ( true !== ( $result = $backup_options->is_ok() ) ) {
				pb_backupbuddy::status( 'error', 'Error retrieving fileoptions file `' . backupbuddy_core::getLogDirectory() . 'fileoptions/' . $serial . '.txt' . '`. Err 35564332.' );
				$archive_file = '[file_unknown]';
				$backup_size = '[size_unknown]';
				$backup_type = '[type_unknown]';
			} else {
				$archive_file = $backup_options->options['archive_file'];
				$backup_size = $backup_options->options['archive_size'];
				$backup_type = $backup_options->options['type'];
			}

			$replacements = array(
				'{site_url}' => site_url(),
				'{backupbuddy_version}' => pb_backupbuddy::settings( 'version' ),
				'{current_datetime}' => date(DATE_RFC822),
				'{message}' => $message,

				'{backup_serial}' => $serial,
				'{download_link}' => pb_backupbuddy::ajax_url( 'download_archive' ) . '&backupbuddy_backup=' . basename( $archive_file ),
				'{backup_file}' => basename( $archive_file ),
				'{backup_size}' => $backup_size,
				'{backup_type}' => $backup_type,
			);
		} else {
			pb_backupbuddy::status( 'error', 'ERROR #54857845785: Fatally halted. Invalid schedule type. Expected `start` or `complete`. Got `' . $start_or_complete . '`.' );
		}


		foreach( $replacements as $replace_key => $replacement ) {
			$subject = str_replace( $replace_key, $replacement, $subject );
			$body = str_replace( $replace_key, $replacement, $body );
		}

		if ( pb_backupbuddy::$options['email_return'] != '' ) {
			$email_return = pb_backupbuddy::$options['email_return'];
		} else {
			$email_return = get_option('admin_email');
		}
		
		pb_backupbuddy::status( 'details', 'Sending email schedule notification. Subject: `' . $subject . '`; body: `' . $body . '`; recipient(s): `' . $email . '`.' );
		if ( !empty( $email ) ) {
			wp_mail( $email, $subject, $body, 'From: BackupBuddy <' . $email_return . ">\r\n".'Reply-To: '.get_option('admin_email')."\r\n");
		}
	} // End mail_notify_scheduled().



	/*	backup_prefix()
	 *	
	 *	Strips all non-file-friendly characters from the site URL. Used in making backup zip filename.
	 *	
	 *	@return		string		The filename friendly converted site URL.
	 */
	public static function backup_prefix() {

		$siteurl = site_url();
		$siteurl = str_replace( 'http://', '', $siteurl );
		$siteurl = str_replace( 'https://', '', $siteurl );
		$siteurl = str_replace( '/', '_', $siteurl );
		$siteurl = str_replace( '\\', '_', $siteurl );
		$siteurl = str_replace( '.', '_', $siteurl );
		$siteurl = str_replace( ':', '_', $siteurl ); // Alternative port from 80 is stored in the site url.
		$siteurl = str_replace( '~', '_', $siteurl ); // Strip ~.
		return $siteurl;

	} // End backup_prefix().



	/* get_remote_send_defaults()
	 *
	 * Get default array values for the remote_sends fileoptions files.
	 * @return		array
	 *
	 */
	public static function get_remote_send_defaults() {
		return array(
			'destination'		=>	0,
			'file'				=>	'',
			'file_size'			=>	0,
			'trigger'			=>	'',						// What triggered this backup. Valid values: scheduled, manual.
			'send_importbuddy'	=>	false,
			'start_time'		=>	time(),
			'finish_time'		=>	0,
			'status'			=>	'timeout',  // success, failure, timeout (default assumption if this is not updated in this PHP load)
			'write_speed'		=>	0,
		);
	} // End get_remote_send_defaults();



	/*	send_remote_destination()
	 *	
	 *	function description
	 *	
	 *	@param		int		$destination_id		ID number (index of the destinations array) to send it.
	 *	@param		string	$file				Full file path of file to send.
	 *	@param		string	$trigger			What triggered this backup. Valid values: scheduled, manual.
	 *	@param		bool	$send_importbuddy	Whether or not importbuddy.php should also be sent with the file to destination.
	 *	@param		bool	$delete_after		Whether or not to delete after send success after THIS send.
	 *	@param		array 	$destination_settings	If passed then this array is used instead of grabbing from settings.
	 *	@return		bool						Send status. true success, false failed.
	 */
	public static function send_remote_destination( $destination_id, $file, $trigger = '', $send_importbuddy = false, $delete_after = false, $identifier = '', $destination_settings = '' ) {

		if ( defined( 'PB_DEMO_MODE' ) ) {
			return false;
		}

		if ( ! file_exists( $file ) ) {
			pb_backupbuddy::status( 'error', 'Error #8583489734: Unable to send file `' . $file . '` to remote destination as it no longer exists. It may have been deleted or permissions are invalid.' );
			return false;
		}

		$migrationkey_transient_time = 60*60*24;

		if ( '' == $file ) {
			$backup_file_size = 50000; // not sure why anything current would be sending importbuddy but NOT sending a backup but just in case...
		} else {
			$backup_file_size = filesize( $file );
		}

		// Generate remote send ID for reference and add it as a new logging serial for better recording details.
		if ( '' == $identifier ) {
			$identifier = pb_backupbuddy::random_string( 12 );
		}

		// Set migration key for later determining last initiated migration.
		if ( 'migration' == $trigger ) {
			set_transient( 'pb_backupbuddy_migrationkey', $identifier, $migrationkey_transient_time );
		}

		pb_backupbuddy::status( 'details', 'Sending file `' . $file . '` to remote destination `' . $destination_id . '` triggered by `' . $trigger . '`.' );

		//pb_backupbuddy::status( 'details', 'About to create initial fileoptions data.' );
		require_once( pb_backupbuddy::plugin_path() . '/classes/fileoptions.php' );
		pb_backupbuddy::status( 'details', 'Fileoptions instance #35.' );
		$fileoptions_obj = new pb_backupbuddy_fileoptions( backupbuddy_core::getLogDirectory() . 'fileoptions/send-' . $identifier . '.txt', $read_only = false, $ignore_lock = true, $create_file = true );
		if ( true !== ( $result = $fileoptions_obj->is_ok() ) ) {
			pb_backupbuddy::status( 'error', __('Fatal Error #9034 A. Unable to access fileoptions data.', 'it-l10n-backupbuddy' ) . ' Error: ' . $result );
			return false;
		}
		//pb_backupbuddy::status( 'details', 'Fileoptions data loaded.' );
		$fileoptions = &$fileoptions_obj->options; // Set reference.

		// Record some statistics.
		$fileoptions = array_merge(
			self::get_remote_send_defaults(),
			array(
				'destination'		=>	$destination_id,
				'file'				=>	$file,
				'file_size'			=>	$backup_file_size,
				'trigger'			=>	$trigger,						// What triggered this backup. Valid values: scheduled, manual.
				'send_importbuddy'	=>	$send_importbuddy,
				'start_time'		=>	time(),
				'finish_time'		=>	0,
				'status'			=>	'timeout',  // success, failure, timeout (default assumption if this is not updated in this PHP load)
				'write_speed'		=>	0,
			)
		);
		pb_backupbuddy::save();


		// Prepare variables to pass to remote destination handler.
		if ( '' == $file ) { // No file to send (blank string file typically happens when just sending importbuddy).
			$files = array();
		} else {
			$files = array( $file );
		}
		
		// Destination settings were not passed so get them based on the destination ID provided.
		if ( ! is_array( $destination_settings ) ) {
			$destination_settings = &pb_backupbuddy::$options['remote_destinations'][$destination_id];
		}


		// For Stash we will check the quota prior to initiating send.
		if ( pb_backupbuddy::$options['remote_destinations'][$destination_id]['type'] == 'stash' ) {
			// Pass off to destination handler.
			require_once( pb_backupbuddy::plugin_path() . '/destinations/bootstrap.php' );
			$send_result = pb_backupbuddy_destinations::get_info( 'stash' ); // Used to kick the Stash destination into life.
			$stash_quota = pb_backupbuddy_destination_stash::get_quota( pb_backupbuddy::$options['remote_destinations'][$destination_id], true );

			if ( $file != '' ) {
				$backup_file_size = filesize( $file );
			} else {
				$backup_file_size = 50000;
			}
			if ( ( $backup_file_size + $stash_quota['quota_used'] ) > $stash_quota['quota_total'] ) {
				$message = '';
				$message .= "You do not have enough Stash storage space to send this file. Please upgrade your Stash storage at http://ithemes.com/member/panel/stash.php or delete files to make space.\n\n";

				$message .= 'Attempting to send file of size ' . pb_backupbuddy::$format->file_size( $backup_file_size ) . ' but you only have ' . $stash_quota['quota_available_nice'] . ' available. ';
				$message .= 'Currently using ' . $stash_quota['quota_used_nice'] . ' of ' . $stash_quota['quota_total_nice'] . ' (' . $stash_quota['quota_used_percent'] . '%).';

				pb_backupbuddy::status( 'error', $message );
				backupbuddy_core::mail_error( $message );

				$fileoptions['status'] = 'Failure. Insufficient destination space.';
				$fileoptions_obj->save();

				return false;
			} else {
				if ( isset( $stash_quota['quota_warning'] ) && ( $stash_quota['quota_warning'] != '' ) ) {

					// We log warning of usage but dont send error email.
					$message = '';
					$message .= 'WARNING: ' . $stash_quota['quota_warning'] . "\n\nPlease upgrade your Stash storage at http://ithemes.com/member/panel/stash.php or delete files to make space.\n\n";
					$message .= 'Currently using ' . $stash_quota['quota_used_nice'] . ' of ' . $stash_quota['quota_total_nice'] . ' (' . $stash_quota['quota_used_percent'] . '%).';

					pb_backupbuddy::status( 'details', $message );
					//backupbuddy_core::mail_error( $message );

				}
			}

		}


		if ( $send_importbuddy === true ) {
			pb_backupbuddy::status( 'details', 'Generating temporary importbuddy.php file for remote send.' );
			pb_backupbuddy::anti_directory_browsing( backupbuddy_core::getTempDirectory(), $die = false );
			$importbuddy_temp = backupbuddy_core::getTempDirectory() . 'importbuddy.php'; // Full path & filename to temporary importbuddy
			self::importbuddy( $importbuddy_temp ); // Create temporary importbuddy.
			pb_backupbuddy::status( 'details', 'Generated temporary importbuddy.' );
			$files[] = $importbuddy_temp; // Add importbuddy file to the list of files to send.
			$send_importbuddy = true; // Track to delete after finished.
		} else {
			pb_backupbuddy::status( 'details', 'Not sending importbuddy.' );
		}


		// Clear fileoptions so other stuff can access it if needed.
		$fileoptions_obj->save();
		$fileoptions_obj->unlock();
		unset( $fileoptions_obj );


		// Pass off to destination handler.
		require_once( pb_backupbuddy::plugin_path() . '/destinations/bootstrap.php' );
		
		$send_result = pb_backupbuddy_destinations::send( $destination_settings, $files, $identifier, $delete_after );
		
		self::kick_db(); // Kick the database to make sure it didn't go away, preventing options saving.

		// Reload fileoptions.
		pb_backupbuddy::status( 'details', 'About to load fileoptions data for saving send status.' );
		require_once( pb_backupbuddy::plugin_path() . '/classes/fileoptions.php' );
		pb_backupbuddy::status( 'details', 'Fileoptions instance #34.' );
		$fileoptions_obj = new pb_backupbuddy_fileoptions( backupbuddy_core::getLogDirectory() . 'fileoptions/send-' . $identifier . '.txt', $read_only = false, $ignore_lock = false, $create_file = false );
		if ( true !== ( $result = $fileoptions_obj->is_ok() ) ) {
			pb_backupbuddy::status( 'error', __('Fatal Error #9034 G. Unable to access fileoptions data.', 'it-l10n-backupbuddy' ) . ' Error: ' . $result );
			return false;
		}
		pb_backupbuddy::status( 'details', 'Fileoptions data loaded.' );
		$fileoptions = &$fileoptions_obj->options; // Set reference.


		// Update stats.
		$fileoptions[$identifier]['finish_time'] = time();
		if ( $send_result === true ) { // succeeded.
			$fileoptions['status'] = 'success';
			$fileoptions['finish_time'] = time();
			pb_backupbuddy::status( 'details', 'Remote send SUCCESS.' );
		} elseif ( $send_result === false ) { // failed.
			$fileoptions['status'] = 'failure';
			pb_backupbuddy::status( 'details', 'Remote send FAILURE.' );
		} elseif ( is_array( $send_result ) ) { // Array so multipart.
			$fileoptions['status'] = 'multipart';
			$fileoptions['finish_time'] = 0;
			$fileoptions['_multipart_id'] = $send_result[0];
			$fileoptions['_multipart_status'] = $send_result[1];
			pb_backupbuddy::status( 'details', 'Multipart send in progress.' );
		} else {
			pb_backupbuddy::status( 'error', 'Error #5485785576463. Invalid status send result: `' . $send_result . '`.' );
		}
		$fileoptions_obj->save();


		// If we sent importbuddy then delete the local copy to clean up.
		if ( $send_importbuddy !== false ) {
			@unlink( $importbuddy_temp ); // Delete temporary importbuddy.
		}
		
		// As of v5.0: Post-send deletion now handled within destinations/bootstrap.php send() to support chunked sends.
		
		return $send_result;

	} // End send_remote_destination().



	/*	destination_send()
	 *	
	 *	Send file(s) to a destination. Pass full array of destination settings.
	 *	
	 *	@param		array		$destination_settings		All settings for this destination for this action.
	 *	@param		array		$files						Array of files to send (full path).
	 *	@return		bool|array								Bool true = success, bool false = fail, array = multipart transfer.
	 */
	public static function destination_send( $destination_settings, $files, $send_id = '', $delete_after = false ) {
		
		// Pass off to destination handler.
		require_once( pb_backupbuddy::plugin_path() . '/destinations/bootstrap.php' );
		$send_result = pb_backupbuddy_destinations::send( $destination_settings, $files, $send_id, $delete_after );
		
		return $send_result;
		
	} // End destination_send().



	/*	backups_list()
	 *	
	 *	function description
	 *	
	 *	@param		string		$type			Valid options: default, migrate
	 *	@param		boolean		$subsite_mode	When in subsite mode only backups for that specific subsite will be listed.
	 *	@return		
	 */
	public static function backups_list( $type = 'default', $subsite_mode = false ) {

		if ( ( pb_backupbuddy::_POST( 'bulk_action' ) == 'delete_backup' ) && ( is_array( pb_backupbuddy::_POST( 'items' ) ) ) ) {
			$needs_save = false;
			pb_backupbuddy::verify_nonce( pb_backupbuddy::_POST( '_wpnonce' ) ); // Security check to prevent unauthorized deletions by posting from a remote place.
			$deleted_files = array();
			foreach( pb_backupbuddy::_POST( 'items' ) as $item ) {
				if ( file_exists( backupbuddy_core::getBackupDirectory() . $item ) ) {
					if ( @unlink( backupbuddy_core::getBackupDirectory() . $item ) === true ) {
						$deleted_files[] = $item;

						// Cleanup any related fileoptions files.
						$serial = backupbuddy_core::get_serial_from_file( $item );

						$backup_files = glob( backupbuddy_core::getBackupDirectory() . '*.zip' );
						if ( ! is_array( $backup_files ) ) {
							$backup_files = array();
						}
						if ( count( $backup_files ) > 5 ) { // Keep a minimum number of backups in array for stats.
							$this_serial = self::get_serial_from_file( $item );
							$fileoptions_file = backupbuddy_core::getLogDirectory() . 'fileoptions/' . $this_serial . '.txt';
							if ( file_exists( $fileoptions_file ) ) {
								@unlink( $fileoptions_file );
							}
							if ( file_exists( $fileoptions_file . '.lock' ) ) {
								@unlink( $fileoptions_file . '.lock' );
							}
							$needs_save = true;
						}
					} else {
						pb_backupbuddy::alert( 'Error: Unable to delete backup file `' . $item . '`. Please verify permissions.', true );
					}
				} // End if file exists.
			} // End foreach.
			if ( $needs_save === true ) {
				pb_backupbuddy::save();
			}

			pb_backupbuddy::alert( __( 'Deleted:', 'it-l10n-backupbuddy' ) . ' ' . implode( ', ', $deleted_files ) );
		} // End if deleting backup(s).


		$backups = array();
		$backup_sort_dates = array();
		$files = glob( backupbuddy_core::getBackupDirectory() . 'backup*.zip' );
		if ( is_array( $files ) && !empty( $files ) ) { // For robustness. Without open_basedir the glob() function returns an empty array for no match. With open_basedir in effect the glob() function returns a boolean false for no match.

			$backup_prefix = self::backup_prefix(); // Backup prefix for this site. Used for MS checking that this user can see this backup.
			foreach( $files as $file_id => $file ) {

				if ( ( $subsite_mode === true ) && is_multisite() ) { // If a Network and NOT the superadmin must make sure they can only see the specific subsite backups for security purposes.

					// Only allow viewing of their own backups.
					if ( !strstr( $file, $backup_prefix ) ) {
						unset( $files[$file_id] ); // Remove this backup from the list. This user does not have access to it.
						continue; // Skip processing to next file.
					}
				}

				$serial = backupbuddy_core::get_serial_from_file( $file );
				
				$options = array();
				if ( file_exists( backupbuddy_core::getLogDirectory() . 'fileoptions/' . $serial . '.txt' ) ) {
					require_once( pb_backupbuddy::plugin_path() . '/classes/fileoptions.php' );
					pb_backupbuddy::status( 'details', 'Fileoptions instance #33.' );
					$backup_options = new pb_backupbuddy_fileoptions( backupbuddy_core::getLogDirectory() . 'fileoptions/' . $serial . '.txt', $read_only = false, $ignore_lock = false, $create_file = true ); // Will create file to hold integrity data if nothing exists.
				} else {
					$backup_options = '';
				}
				$backup_integrity = backupbuddy_core::backup_integrity_check( $file, $backup_options, $options );

				// Backup status.
				$pretty_status = array(
					true	=>	'<span class="pb_label pb_label-success">Good</span>', // v4.0+ Good.
					'pass'	=>	'<span class="pb_label pb_label-success">Good</span>', // Pre-v4.0 Good.
					false	=>	'<span class="pb_label pb_label-important">Bad</span>',  // v4.0+ Bad.
					'fail'	=>	'<span class="pb_label pb_label-important">Bad</span>',  // Pre-v4.0 Bad.
				);

				// Backup type.
				$pretty_type = array(
					'full'	=>	'Full',
					'db'	=>	'Database',
					'files' =>	'Files',
				);


				// Defaults...
				$detected_type = '';
				$file_size = '';
				$modified = '';
				$modified_time = 0;
				$integrity = '';

				$main_string = 'Warn#284.';
				if ( is_array( $backup_integrity ) ) { // Data intact... put it all together.
					// Calculate time ago.
					$time_ago = '';
					if ( isset( $backup_integrity['modified'] ) ) {
						$time_ago = pb_backupbuddy::$format->time_ago( $backup_integrity['modified'] ) . ' ago';
					}

					$detected_type = pb_backupbuddy::$format->prettify( $backup_integrity['detected_type'], $pretty_type );
					if ( $detected_type == '' ) {
						$detected_type = 'Unknown';
					} else {
						if ( isset( $backup_options->options['profile'] ) ) {
							$detected_type = '
							<div>
								<span style="color: #AAA; float: left;">' . $detected_type . '</span>
								<span style="display: inline-block; float: left; height: 15px; border-right: 1px solid #EBEBEB; margin-left: 6px; margin-right: 6px;"></span>
								' . htmlentities( $backup_options->options['profile']['title'] ) . '
							</div>
							'
							;
						}
					}

					$file_size = pb_backupbuddy::$format->file_size( $backup_integrity['size'] );
					$modified = pb_backupbuddy::$format->date( pb_backupbuddy::$format->localize_time( $backup_integrity['modified'] ), 'l, F j, Y - g:i:s a' );
					$modified_time = $backup_integrity['modified'];
					if ( isset( $backup_integrity['status'] ) ) { // Pre-v4.0.
						$status = $backup_integrity['status'];
					} else { // v4.0+
						$status = $backup_integrity['is_ok'];
					}


					// Calculate main row string.
					if ( $type == 'default' ) { // Default backup listing.
						$main_string = '<a href="' . pb_backupbuddy::ajax_url( 'download_archive' ) . '&backupbuddy_backup=' . basename( $file ) . '" class="backupbuddyFileTitle" title="' . basename( $file ) . '">' . $modified . ' (' . $time_ago . ')</a>';
					} elseif ( $type == 'migrate' ) { // Migration backup listing.
						$main_string = '<a class="pb_backupbuddy_hoveraction_migrate backupbuddyFileTitle" rel="' . basename( $file ) . '" href="' . pb_backupbuddy::page_url() . '&migrate=' . basename( $file ) . '&value=' . basename( $file ) . '" title="' . basename( $file ) . '">' . $modified . ' (' . $time_ago . ')</a>';
					} else {
						$main_string = '{Unknown type.}';
					}
					// Add comment to main row string if applicable.
					if ( isset( $backup_integrity['comment'] ) && ( $backup_integrity['comment'] !== false ) && ( $backup_integrity['comment'] !== '' ) ) {
						$main_string .= '<br><span class="description">Note: <span class="pb_backupbuddy_notetext">' . htmlentities( $backup_integrity['comment'] ) . '</span></span>';
					}


					$integrity = pb_backupbuddy::$format->prettify( $status, $pretty_status ) . ' ';
					if ( isset( $backup_integrity['scan_notes'] ) && count( (array)$backup_integrity['scan_notes'] ) > 0 ) {
						foreach( (array)$backup_integrity['scan_notes'] as $scan_note ) {
							$integrity .= $scan_note . ' ';
						}
					}
					$integrity .= '<a href="' . pb_backupbuddy::page_url() . '&reset_integrity=' . $serial  . '" title="Rescan integrity. Last checked ' . pb_backupbuddy::$format->date( $backup_integrity['scan_time'] ) . '."><img src="' . pb_backupbuddy::plugin_url() . '/images/refresh_gray.gif" style="vertical-align: -1px;"></a>';
					$integrity .= '<div class="row-actions"><a title="' . __( 'Backup Status', 'it-l10n-backupbuddy' ) . '" href="' . pb_backupbuddy::ajax_url( 'integrity_status' ) . '&serial=' . $serial . '&#038;TB_iframe=1&#038;width=640&#038;height=600" class="thickbox">' . __( 'View Details', 'it-l10n-backupbuddy' ) . '</a></div>';
					
					$sumLogFile = backupbuddy_core::getLogDirectory() . 'status-' . $serial . '_sum_' . pb_backupbuddy::$options['log_serial'] . '.txt';
					if ( file_exists( $sumLogFile ) ) {
						$integrity .= '<div class="row-actions"><a title="' . __( 'View Backup Log', 'it-l10n-backupbuddy' ) . '" href="' . pb_backupbuddy::ajax_url( 'view_log' ) . '&serial=' . $serial . '&#038;TB_iframe=1&#038;width=640&#038;height=600" class="thickbox">' . __( 'View Log', 'it-l10n-backupbuddy' ) . '</a></div>';
					}
					
				} // end if is_array( $backup_options ).


				$backups[basename( $file )] = array(
					array( basename( $file ), $main_string . '<br><span class="description" style="color: #AAA; display: inline-block; margin-top: 5px;">' . basename( $file ) . '</span>' ),
					$detected_type,
					$file_size,
					$integrity,
				);


				$backup_sort_dates[basename( $file)] = $modified_time;

			} // End foreach().

		} // End if.

		// Sort backup by date.
		arsort( $backup_sort_dates );
		// Re-arrange backups based on sort dates.
		$sorted_backups = array();
		foreach( $backup_sort_dates as $backup_file => $backup_sort_date ) {
			$sorted_backups[$backup_file] = $backups[$backup_file];
			unset( $backups[$backup_file] );
		}
		unset( $backups );


		return $sorted_backups;

	} // End backups_list().


	// 1128
	public static function getDatArrayFromZip( $file ) {
		require_once( pb_backupbuddy::plugin_path() . '/lib/zipbuddy/zipbuddy.php' );
		$zipbuddy = new pluginbuddy_zipbuddy( backupbuddy_core::getBackupDirectory() );
		$serial = self::get_serial_from_file( $file );
		
		if ( pb_backupbuddy::$classes['zipbuddy']->file_exists( $file, $find = 'wp-content/uploads/backupbuddy_temp/' . $serial . '/backupbuddy_dat.php' ) === true ) { // Post 2.0 full backup
			
		} elseif ( pb_backupbuddy::$classes['zipbuddy']->file_exists( $file, $find = 'wp-content/uploads/temp_' . $serial . '/backupbuddy_dat.php' ) === true ) { // Pre 2.0 full backup
			
		} elseif ( pb_backupbuddy::$classes['zipbuddy']->file_exists( $file, $find = 'backupbuddy_dat.php' ) === true ) { // DB backup
			
		} else { // Could not find DAt file.
			return false;
		}
		
		// Calculate temp directory & lock it down.
		$temp_dir = get_temp_dir();
		$destination = $temp_dir;
		if ( ( ( ! file_exists( $destination ) ) && ( false === mkdir( $destination ) ) ) ) {
			$error = 'Error #458485945b: Unable to create temporary location.';
			pb_backupbuddy::status( 'error', $error );
			die( $error );
		}

		// If temp directory is within webroot then lock it down.
		$temp_dir = str_replace( '\\', '/', $temp_dir ); // Normalize for Windows.
		$temp_dir = rtrim( $temp_dir, '/\\' ) . '/'; // Enforce single trailing slash.
		if ( FALSE !== stristr( $temp_dir, ABSPATH ) ) { // Temp dir is within webroot.
			pb_backupbuddy::anti_directory_browsing( $destination );
		}
		unset( $temp_dir );
		
		$extractions = array( $find => 'temp_dat_read-' . $serial . '.php' );
		$extract_result = $zipbuddy->extract( $file, $destination, $extractions );
		if ( false === $extract_result ) { // failed.
			return array();
		} else {
			$datArray = self::get_dat_file_array( $destination . 'temp_dat_read-' . $serial . '.php' );
			if ( is_array( $datArray ) ) {
				return $datArray;
			} else {
				return array();
			}
		}
		
	} // End getDatContentsFromZip().


	// If output file not specified then outputs to browser as download.
	// IMPORTANT: If outputting to browser (no output file) must die() after outputting content if using AJAX. Do not output to browser anything after this function in this case.
	public static function importbuddy( $output_file = '', $importbuddy_pass_hash = '', $return_not_echo = false ) {

		pb_backupbuddy::set_greedy_script_limits(); // Some people run out of PHP memory.

		if ( $importbuddy_pass_hash == '' ) {
			if ( !isset( pb_backupbuddy::$options ) ) {
				pb_backupbuddy::load();
			}
			$importbuddy_pass_hash = pb_backupbuddy::$options['importbuddy_pass_hash'];
		}

		if ( $importbuddy_pass_hash == '' ) {
			$message = 'Warning #9032 - You have not set an ImportBuddy password on the BackupBuddy Settings page. Once this password is set a copy of the importbuddy.php file needed to restore your backup will be included in Full backup zip files for convenience. It may manually be downloaded from the Restore / Migrate page.';
			pb_backupbuddy::status( 'warning', $message );
			return false;
		}

		pb_backupbuddy::status( 'details', 'Loading importbuddy core file into memory.' );
		$output = file_get_contents( pb_backupbuddy::plugin_path() . '/_importbuddy/_importbuddy.php' );
		if ( $importbuddy_pass_hash != '' ) {
			$output = preg_replace('/#PASSWORD#/', $importbuddy_pass_hash, $output, 1 ); // Only replaces first instance.
		}

		$version_string = pb_backupbuddy::settings( 'version' ) . ' (downloaded ' . date( DATE_W3C ) . ')';

		// If on DEV system (.git dir exists) then append some details on current.
		if ( defined( 'BACKUPBUDDY_DEV' ) && ( true === BACKUPBUDDY_DEV ) ) {
			if ( @file_exists( pb_backupbuddy::plugin_path() . '/.git/logs/HEAD' ) ) {
				$commit_log = escapeshellarg( pb_backupbuddy::plugin_path() . '/.git/logs/HEAD' );
				$commit_line = exec( "tail -n 1 {$commit_log}" );
				$version_string .= ' <span style="font-size: 8px;">[DEV: ' . $commit_line . ']</span>';
			}
		}

		$output = preg_replace('/#VERSION#/', $version_string, $output, 1 ); // Only replaces first instance.

		// PACK IMPORTBUDDY
		$_packdata = array( // NO TRAILING OR PRECEEDING SLASHES!

			'_importbuddy/importbuddy'							=>		'importbuddy',
			'classes/_migrate_database.php'						=>		'importbuddy/classes/_migrate_database.php',
			'classes/core.php'									=>		'importbuddy/classes/core.php',
			'classes/import.php'								=>		'importbuddy/classes/import.php',
			'classes/restore.php'								=>		'importbuddy/classes/restore.php',
			'classes/_restoreFiles.php'							=>		'importbuddy/classes/_restoreFiles.php',
			'classes/remote_api.php'							=>		'importbuddy/classes/remote_api.php',
			
			'js/jquery.leanModal.min.js'						=>		'importbuddy/js/jquery.leanModal.min.js',
			'js/jquery.joyride-2.0.3.js'						=>		'importbuddy/js/jquery.joyride-2.0.3.js',
			'js/modernizr.mq.js'								=>		'importbuddy/js/modernizr.mq.js',
			'css/joyride.css'									=>		'importbuddy/css/joyride.css',

			'images/working.gif'								=>		'importbuddy/images/working.gif',
			'images/bullet_go.png'								=>		'importbuddy/images/bullet_go.png',
			'images/favicon.png'								=>		'importbuddy/images/favicon.png',
			'images/sort_down.png'								=>		'importbuddy/images/sort_down.png',
			'images/icon_menu_32x32.png'						=>		'importbuddy/images/icon_menu_32x32.png',

			'lib/dbreplace'										=>		'importbuddy/lib/dbreplace',
			'lib/dbimport'										=>		'importbuddy/lib/dbimport',
			'lib/commandbuddy'									=>		'importbuddy/lib/commandbuddy',
			'lib/zipbuddy'										=>		'importbuddy/lib/zipbuddy',
			'lib/mysqlbuddy'									=>		'importbuddy/lib/mysqlbuddy',
			'lib/textreplacebuddy'								=>		'importbuddy/lib/textreplacebuddy',
			'lib/cpanel'										=>		'importbuddy/lib/cpanel',

			'pluginbuddy'										=>		'importbuddy/pluginbuddy',

			'controllers/pages/server_info'						=>		'importbuddy/controllers/pages/server_info',
			'controllers/pages/server_tools.php'				=>		'importbuddy/controllers/pages/server_tools.php',

			// Stash
			'destinations/stash/lib/class.itx_helper.php'		=>		'importbuddy/classes/class.itx_helper.php',
			'destinations/_s3lib/aws-sdk/lib/requestcore'		=>		'importbuddy/lib/requestcore',

		);

		pb_backupbuddy::status( 'details', 'Loading each file into memory for writing master importbuddy file.' );

		$output .= "\n<?php /*\n###PACKDATA,BEGIN\n";
		foreach( $_packdata as $pack_source => $pack_destination ) {
			$pack_source = '/' . $pack_source;
			if ( is_dir( pb_backupbuddy::plugin_path() . $pack_source ) ) {
				$files = pb_backupbuddy::$filesystem->deepglob( pb_backupbuddy::plugin_path() . $pack_source );
			} else {
				$files = array( pb_backupbuddy::plugin_path() . $pack_source );
			}
			foreach( $files as $file ) {
				if ( is_file( $file ) ) {
					$source = str_replace( pb_backupbuddy::plugin_path(), '', $file );
					$destination = $pack_destination . substr( $source, strlen( $pack_source ) );
					$output .= "###PACKDATA,FILE_START,{$source},{$destination}\n";
					$output .= base64_encode( file_get_contents( $file ) );
					$output .= "\n";
					$output .= "###PACKDATA,FILE_END,{$source},{$destination}\n";
				}
			}
		}
		$output .= "###PACKDATA,END\n*/";
		$output .= "\n\n\n\n\n\n\n\n\n\n";

		if ( true === $return_not_echo ) {
			return $output;
		}

		if ( $output_file == '' ) { // No file so output to browser.
			header( 'Content-Description: File Transfer' );
			header( 'Content-Type: text/plain; name=importbuddy.php' );
			header( 'Content-Disposition: attachment; filename=importbuddy.php' );
			header( 'Expires: 0' );
			header( 'Content-Length: ' . strlen( $output ) );

			pb_backupbuddy::flush();
			echo $output;
			pb_backupbuddy::flush();

			// BE SURE TO die() AFTER THIS AND NOT OUTPUT TO BROWSER!
		} else { // Write to file.
			pb_backupbuddy::status( 'details', 'Writing importbuddy master file to disk.' );
			if ( false === file_put_contents( $output_file, $output ) ) {
				pb_backupbuddy::status( 'error', 'Error #483894: Unable to write to file `' . $output_file . '`.' );
			}
		}

	} // End importbuddy().



	// If output file not specified then outputs to browser as download.
	// IMPORTANT: If outputting to browser (no output file) must die() after outputting content if using AJAX. Do not output to browser anything after this function in this case.
	public static function serverbuddy( $output_file = '', $serverbuddy_pass_hash = '' ) {
		if ( defined( 'PB_DEMO_MODE' ) ) {
			echo 'Access denied in demo mode.';
			return;
		}

		pb_backupbuddy::set_greedy_script_limits(); // Some people run out of PHP memory.

		if ( $serverbuddy_pass_hash == '' ) {
			if ( !isset( pb_backupbuddy::$options ) ) {
				pb_backupbuddy::load();
			}
			$serverbuddy_pass_hash = pb_backupbuddy::$options['importbuddy_pass_hash'];
		}

		if ( $serverbuddy_pass_hash == '' ) {
			$message = 'Error #9032c: Warning only - You have not set a password to generate the ServerBuddy script yet on the BackupBuddy Settings page. If you were trying to download ServerBuddy then you may have a plugin confict preventing the page from prompting you to enter a password.';
			pb_backupbuddy::status( 'warning', $message );
			return false;
		}

		$output = file_get_contents( pb_backupbuddy::plugin_path() . '/_serverbuddy/_serverbuddy.php' );
		if ( $serverbuddy_pass_hash != '' ) {
			$output = preg_replace('/#PASSWORD#/', $serverbuddy_pass_hash, $output, 1 ); // Only replaces first instance.
		}
		$output = preg_replace('/#VERSION#/', pb_backupbuddy::settings( 'version' ), $output, 1 ); // Only replaces first instance.

		// PACK SERVERBUDDY
		$_packdata = array( // NO TRAILING OR PRECEEDING SLASHES!

			'_serverbuddy/serverbuddy'							=>		'serverbuddy',
			'classes/_migrate_database.php'						=>		'serverbuddy/classes/_migrate_database.php',
			'classes/core.php'									=>		'serverbuddy/classes/core.php',

			'images/working.gif'								=>		'serverbuddy/images/working.gif',
			'images/bullet_go.png'								=>		'serverbuddy/images/bullet_go.png',
			'images/favicon.png'								=>		'serverbuddy/images/favicon.png',
			'images/sort_down.png'								=>		'serverbuddy/images/sort_down.png',


			'lib/dbreplace'										=>		'serverbuddy/lib/dbreplace',
			'lib/commandbuddy'									=>		'serverbuddy/lib/commandbuddy',
			'lib/zipbuddy'										=>		'serverbuddy/lib/zipbuddy',
			'lib/mysqlbuddy'									=>		'serverbuddyy/lib/mysqlbuddy',
			'lib/textreplacebuddy'								=>		'serverbuddy/lib/textreplacebuddy',

			'pluginbuddy'										=>		'serverbuddy/pluginbuddy',

			'controllers/pages/server_info'						=>		'serverbuddy/controllers/pages/server_info',
			'controllers/pages/server_tools.php'					=>		'serverbuddy/controllers/pages/server_tools.php',

		);

		$output .= "\n<?php /*\n###PACKDATA,BEGIN\n";
		foreach( $_packdata as $pack_source => $pack_destination ) {
			$pack_source = '/' . $pack_source;
			if ( is_dir( pb_backupbuddy::plugin_path() . $pack_source ) ) {
				$files = pb_backupbuddy::$filesystem->deepglob( pb_backupbuddy::plugin_path() . $pack_source );
			} else {
				$files = array( pb_backupbuddy::plugin_path() . $pack_source );
			}
			foreach( $files as $file ) {
				if ( is_file( $file ) ) {
					$source = str_replace( pb_backupbuddy::plugin_path(), '', $file );
					$destination = $pack_destination . substr( $source, strlen( $pack_source ) );
					$output .= "###PACKDATA,FILE_START,{$source},{$destination}\n";
					$output .= base64_encode( file_get_contents( $file ) );
					$output .= "\n";
					$output .= "###PACKDATA,FILE_END,{$source},{$destination}\n";
				}
			}
		}
		$output .= "###PACKDATA,END\n*/";
		$output .= "\n\n\n\n\n\n\n\n\n\n";

		if ( $output_file == '' ) { // No file so output to browser.
			header( 'Content-Description: File Transfer' );
			header( 'Content-Type: text/plain; name=importbuddy.php' );
			header( 'Content-Disposition: attachment; filename=importbuddy.php' );
			header( 'Expires: 0' );
			header( 'Content-Length: ' . strlen( $output ) );

			pb_backupbuddy::flush();
			echo $output;
			pb_backupbuddy::flush();

			// BE SURE TO die() AFTER THIS AND NOT OUTPUT TO BROWSER!
		} else { // Write to file.
			file_put_contents( $output_file, $output );
		}

	} // End serverbuddy().



	// TODO: RepairBuddy is not yet converted into new framework so just using pre-BB3.0 version for now.
	public static function repairbuddy( $output_file = '' ) {
		if ( defined( 'PB_DEMO_MODE' ) ) {
			echo 'Access denied in demo mode.';
			return;
		}

		if ( !isset( pb_backupbuddy::$options ) ) {
			pb_backupbuddy::load();
		}
		$output = file_get_contents( pb_backupbuddy::plugin_path() . '/_repairbuddy.php' );
		if ( pb_backupbuddy::$options['importbuddy_pass_hash'] != '' ) {
			$output = preg_replace('/#PASSWORD#/', pb_backupbuddy::$options['importbuddy_pass_hash'], $output, 1 ); // Only replaces first instance.
		}
		$output = preg_replace('/#VERSION#/', pb_backupbuddy::settings( 'version' ), $output, 1 ); // Only replaces first instance.


		if ( $output_file == '' ) { // No file so output to browser.
			header( 'Content-Description: File Transfer' );
			header( 'Content-Type: text/plain; name=repairbuddy.php' );
			header( 'Content-Disposition: attachment; filename=repairbuddy.php' );
			header( 'Expires: 0' );
			header( 'Content-Length: ' . strlen( $output ) );

			pb_backupbuddy::flush();
			echo $output;
			pb_backupbuddy::flush();

			// BE SURE TO die() AFTER THIS AND NOT OUTPUT TO BROWSER!
		} else { // Write to file.
			file_put_contents( $output_file, $output );
		}

	} // End repairbuddy().



	/* pretty_destination_type()
	 *
	 * Take a destination type slug and change it into a user-friendly display of the destination type.
	 *
	 * @param	string		Internal destination slug. Eg: s3
	 * @return	string		Friendly destination title. Eg: Amazon S3
	 *
	 */
	public static function pretty_destination_type( $type ) {
		if ( $type == 'rackspace' ) {
			return 'Rackspace';
		} elseif ( $type == 'email' ) {
			return 'Email';
		} elseif ( $type == 's3' ) {
			return 'Amazon S3';
		} elseif ( $type == 'ftp' ) {
			return 'FTP';
		} elseif ( $type == 'dropbox' ) {
			return 'Dropbox';
		} else {
			return $type;
		}
	} // End pretty_destination_type().



	/* build_icicle()
	 *
	 * Build directory tree for use with the "icicle" javascript library for the graphical directory display on Server Tools page.
	 *
	 * @param	string	$dir			
	 * @param	?		$base			
	 * @param	?		$icicle_json	
	 * @param	int		$max_depth		Maximum depth of tree to display.  Note that deeper depths are still traversed for size calculations. Default: 10
	 * @param	int		$depth_count	Default: 0
	 * @param	bool	$is_root		Default: true
	 *
	 */
	public static function build_icicle( $dir, $base, $icicle_json, $max_depth = 10, $depth_count = 0, $is_root = true ) {
		$bg_color = '005282';

		$depth_count++;
		$bg_color = dechex( hexdec( $bg_color ) - ( $depth_count * 15 ) );

		$icicle_json = '{' . "\n";

		$dir_name = $dir;
		$dir_name = str_replace( ABSPATH, '', $dir );
		$dir_name = str_replace( '\\', '/', $dir_name );

		$dir_size = 0;
		$sub = opendir( $dir );
		$has_children = false;
		while( $file = readdir( $sub ) ) {
			if ( ( $file == '.' ) || ( $file == '..' ) ) {
				continue; // Next loop.
			} elseif ( is_dir( $dir . '/' . $file ) ) {

				$dir_array = '';
				$response = self::build_icicle( $dir . '/' . $file, $base, $dir_array, $max_depth, $depth_count, false );
				if ( ( $max_depth-1 > 0 ) || ( $max_depth == -1 ) ) { // Only adds to the visual tree if depth isnt exceeded.
					if ( $max_depth > 0 ) {
						$max_depth = $max_depth - 1;
					}

					if ( $has_children === false ) { // first loop add children section
						$icicle_json .= '"children": [' . "\n";
					} else {
						$icicle_json .= ',';
					}
					$icicle_json .= $response[0];

					$has_children = true;
				}
				$dir_size += $response[1];
				unset( $response );
				unset( $file );


			} else {
				$stats = stat( $dir . '/' . $file );
				$dir_size += $stats['size'];
				unset( $file );
			}
		}
		closedir( $sub );
		unset( $sub );

		if ( $has_children === true ) {
			$icicle_json .= ' ]' . "\n";
		}

		if ( $has_children === true ) {
			$icicle_json .= ',';
		}

		$icicle_json .= '"id": "node_' . str_replace( '/', ':', $dir_name ) . ': ^' . str_replace( ' ', '~', pb_backupbuddy::$format->file_size( $dir_size ) ) . '"' . "\n";

		$dir_name = str_replace( '/', '', strrchr( $dir_name, '/' ) );
		if ( $dir_name == '' ) { // Set root to be /.
			$dir_name = '/';
		}
		$icicle_json .= ', "name": "' . $dir_name . ' (' . pb_backupbuddy::$format->file_size( $dir_size ) . ')"' . "\n";

		$icicle_json .= ',"data": { "$dim": ' . ( $dir_size + 10 ) . ', "$color": "#' . str_pad( $bg_color, 6, '0', STR_PAD_LEFT ) . '" }' . "\n";
		$icicle_json .= '}';

		if ( $is_root !== true ) {
			//$icicle_json .= ',x';
		}

		return array( $icicle_json, $dir_size );
	} // End build_icicle().



	// return array of tests and their results.
	public static function preflight_check() {
		$tests = array();

		// MULTISITE BETA WARNING.
		if ( is_multisite() && backupbuddy_core::is_network_activated() && !defined( 'PB_DEMO_MODE' ) ) { // Multisite installation.
			$tests[] = array(
				'test'		=>	'multisite_beta',
				'success'	=>	false,
				'message'	=>	'WARNING: BackupBuddy Multisite functionality is EXPERIMENTAL and NOT officially supported. Multiple issues are known. Usage of it is at your own risk and should not be relied upon. Standalone WordPress sites are suggested. You may use the "Export" feature to export your subsites into standalone WordPress sites. To enable experimental BackupBuddy Multisite functionality you must add the following line to your wp-config.php file: <b>define( \'PB_BACKUPBUDDY_MULTISITE_EXPERIMENT\', true );</b>
								'
			);
		} // end network-activated multisite.

		// LOOPBACKS TEST.
		if ( ( $loopback_response = self::loopback_test() ) === true ) {
			$success = true;
			$message = '';
		} else { // failed
			$success = false;
			if ( defined( 'ALTERNATE_WP_CRON' ) && ( ALTERNATE_WP_CRON == true ) ) {
				$message = __('Running in Alternate WordPress Cron mode. HTTP Loopback Connections are not enabled on this server but you have overridden this in the wp-config.php file (this is a good thing).', 'it-l10n-backupbuddy' ) . ' <a href="http://ithemes.com/codex/page/BackupBuddy:_Frequent_Support_Issues#HTTP_Loopback_Connections_Disabled" target="_new">' . __('Additional Information Here', 'it-l10n-backupbuddy' ) . '</a>.';
			} else {
				$message = __('HTTP Loopback Connections are not enabled on this server or are not functioning properly. You may encounter stalled, significantly delayed backups, or other difficulties. See details in the box below. This may be caused by a conflicting plugin such as a caching plugin.', 'it-l10n-backupbuddy' ) . ' <a href="http://ithemes.com/codex/page/BackupBuddy:_Frequent_Support_Issues#HTTP_Loopback_Connections_Disabled" target="_new">' . __('Click for instructions on how to resolve this issue.', 'it-l10n-backupbuddy' ) . '</a>';
				$message .= ' <b>Details:</b> <textarea style="height: 50px; width: 100%;">' . $loopback_response . '</textarea>';
			}
		}
		$tests[] = array(
			'test'		=>	'loopbacks',
			'success'	=>	$success,
			'message'	=>	$message,
		);

		// POSSIBLE CACHING PLUGIN CONFLICT WARNING.
		$success = true;
		$message = '';
		$found_plugins = array();
		if ( ! is_multisite() ) {
			$active_plugins = serialize( get_option( 'active_plugins' ) );
			foreach( self::$warn_plugins as $warn_plugin => $warn_plugin_title ) {
				if ( FALSE !== strpos( $active_plugins, $warn_plugin ) ) { // Plugin active.
					$found_plugins[] = $warn_plugin_title;
					$success = false;
				}
			}
		}
		if ( count( $found_plugins ) > 0 ) {
			$message = __( 'One or more caching plugins were detected as activated. Some caching plugin configurations may possibly cache & interfere with backup processes or WordPress cron. If you encounter problems clear the caching plugin\'s cache (deactivating the plugin may help) to troubleshoot.', 'it-l10n-backupbuddy' ) . ' ';
			$message .= __( 'Activated caching plugins detected:', 'it-l10n-backupbuddy' ) . ' ';
			$message .= implode( ', ', $found_plugins );
			$message .= '.';
		}
		$tests[] = array(
			'test'		=>	'loopbacks',
			'success'	=>	$success,
			'message'	=>	$message,
		);

		// WORDPRESS IN SUBDIRECTORIES TEST.
		$wordpress_locations = self::get_wordpress_locations();
		if ( count( $wordpress_locations ) > 0 ) {
			$success = false;
			$message = __( 'WordPress may have been detected in one or more subdirectories. Backing up multiple instances of WordPress may result in server timeouts due to increased backup time. You may exclude WordPress directories via the Settings page. Detected non-excluded locations:', 'it-l10n-backupbuddy' ) . ' ' . implode( ', ', $wordpress_locations );
		} else {
			$success = true;
			$message = '';
		}
		$tests[] = array(
			'test'		=>	'wordpress_subdirectories',
			'success'	=>	$success,
			'message'	=>	$message,
		);

		// Log file directory writable for status logging.
		$status_directory = backupbuddy_core::getLogDirectory();
		if ( ! file_exists( $status_directory ) ) {
			if ( false === pb_backupbuddy::anti_directory_browsing( $status_directory, $die = false ) ) {
				$success = false;
				$message = 'The status log file directory `' . $status_directory . '` is not creatable or permissions prevent access. Verify permissions of it and/or its parent directory. Backup status information will be unavailable until this is resolved.';
			}
		}
		if ( ! is_writable( $status_directory ) ) {
			$success = false;
			$message = 'The status log file directory `' . $status_directory . '` is not writable. Please verify permissions before creating a backup. Backup status information will be unavailable until this is resolved.';
		} else {
			$success = true;
			$message = '';
		}
		$tests[] = array(
			'test'		=>	'status_directory_writable',
			'success'	=>	$success,
			'message'	=>	$message,
		);

		// CHECK ZIP AVAILABILITY.
		require_once( pb_backupbuddy::plugin_path() . '/lib/zipbuddy/zipbuddy.php' );

		if ( !isset( pb_backupbuddy::$classes['zipbuddy'] ) ) {
			pb_backupbuddy::$classes['zipbuddy'] = new pluginbuddy_zipbuddy( backupbuddy_core::getBackupDirectory() );
		}

		/***** BEGIN LOOKING FOR UNFINISHED RECENT BACKUPS *****/
		if ( '' != pb_backupbuddy::$options['last_backup_serial'] ) {
			$lastBackupFileoptions = backupbuddy_core::getLogDirectory() . 'fileoptions/' . pb_backupbuddy::$options['last_backup_serial'] . '.txt';
			if ( file_exists( $lastBackupFileoptions ) ) {
				require_once( pb_backupbuddy::plugin_path() . '/classes/fileoptions.php' );
				pb_backupbuddy::status( 'details', 'Fileoptions instance #32.' );
				$backup_options = new pb_backupbuddy_fileoptions( $lastBackupFileoptions, $read_only = true );
				if ( true !== ( $result = $backup_options->is_ok() ) || ( ! isset( $backup_options->options['updated_time'] ) ) ) {
					// NOTE: If this files during a backup it may try to read the fileoptions file too early due to the last_backup_serial being set. Suppressing errors for now.
					pb_backupbuddy::status( 'details', 'Unable to retrieve fileoptions file (this is normal if a backup is currently in process & may be ignored) `' . backupbuddy_core::getLogDirectory() . 'fileoptions/' . pb_backupbuddy::$options['last_backup_serial'] . '.txt' . '`. Err 54478236765. Details: `' . $result . '`.' );
				} else {
					if ( $backup_options->options['updated_time'] < 180 ) { // Been less than 3min since last backup.

						if ( !empty( $backup_options->options['steps'] ) ) { // Look for incomplete steps.
							$found_unfinished = false;
							foreach( $backup_options->options['steps'] as $step ) {
								if ( $step['finish_time'] == '0' ) { // Found an unfinished step.
									$found_unfinished = true;
									break;
								}
							} // end foreach.

							if ( $found_unfinished === true ) {
								$tests[] = array(
									'test'		=>	'recent_backup',
									'success'	=>	false,
									'message'	=>	__('A backup was recently started and reports unfinished steps. You should wait unless you are sure the previous backup has completed or failed to avoid placing a heavy load on your server.', 'it-l10n-backupbuddy' ) .
										' Last updated: ' . pb_backupbuddy::$format->date( $backup_options->options['updated_time'] ) . '; '.
										' Serial: ' . pb_backupbuddy::$options['last_backup_serial']
								,
								);
							} // end $found_unfinished === true.

						} // end if.

					}
				}
			}
		}
		/***** END LOOKING FOR UNFINISHED RECENT BACKUPS *****/

		/***** BEGIN LOOKING FOR BACKUP FILES IN SITE ROOT *****/
		$files = glob( ABSPATH . 'backup-*.zip' );
		if ( !is_array( $files ) || empty( $files ) ) {
			$files = array();
		}
		foreach( $files as &$file ) {
			$file = basename( $file );
		}
		if ( count( $files ) > 0 ) {
			$files_string = implode( ', ', $files );
			$tests[] = array(
				'test'		=>	'root_backups-' . $files_string,
				'success'	=>	false,
				'message'	=>	'One or more backup files, `' . $files_string . '` was found in the root directory of this site. This may be leftover from a recent restore. You should usually remove backup files from the site root for security.',
			);
		}
		/***** END LOOKING FOR BACKUP FILES IN SITE ROOT *****/

		return $tests;

	} // End preflight_check().



	// returns true on success, error message otherwise.
	/*	loopback_test()
	 *	
	 *	Connects back to same site via AJAX call to an AJAX slug that has NOT been registered.
	 *	WordPress AJAX returns a -1 (or 0 in newer version?) for these. Also not logged into
	 *	admin when connecting back. Checks to see if body contains -1 / 0. If loopbacks are not
	 *	enabled then will fail connecting or do something else.
	 *	
	 *	
	 *	@param		
	 *	@return		boolean		True on success, string error message otherwise.
	 */
	public static function loopback_test() {
		$loopback_url = admin_url('admin-ajax.php');
		pb_backupbuddy::status( 'details', 'Testing loopback connections by connecting back to site at the URL: `' . $loopback_url . '`. It should display simply "0" or "-1" in the body.' );

		$response = wp_remote_get(
			$loopback_url,
			array(
				'method' => 'GET',
				'timeout' => 8, // X second delay. A loopback should be very fast.
				'redirection' => 5,
				'httpversion' => '1.0',
				'blocking' => true,
				'headers' => array(),
				'body' => null,
				'cookies' => array()
			)
		);

		if( is_wp_error( $response ) ) { // Loopback failed. Some kind of error.
			$error = $response->get_error_message();
			pb_backupbuddy::status( 'error', 'Loopback test error: `' . $error . '`. URL: `' . $loopback_url . '`.' );
			return 'Error: ' . $error;
		} else {
			if ( ( $response['body'] == '-1' ) || ( $response['body'] == '0' ) ) { // Loopback succeeded.
				pb_backupbuddy::status( 'details', 'HTTP Loopback test success. Returned `' . $response['body'] . '`.' );
				return true;
			} else { // Loopback failed.
				$error = 'Connected to server but unexpected output: ' . htmlentities( $response['body'] );
				pb_backupbuddy::status( 'error', $error );
				return $error;
			}
		}
	} // End loopback_test().



	/* get_wordpress_locations()
	 *
	 * Get an array of subdirectories where potential WordPress installations have been detected.
	 *
	 * @return	array	Array of full paths, WITHOUT trailing slashes.
	 *
	 */
	public static function get_wordpress_locations() {
		$wordpress_locations = array();

		$files = glob( ABSPATH . '*/' );
		if ( !is_array( $files ) || empty( $files ) ) {
			$files = array();
		}

		foreach( $files as $file ) {
			if ( file_exists( $file . 'wp-config.php' ) ) {
				$wordpress_locations[]  = rtrim( '/' . str_replace( ABSPATH, '', $file ), '/\\' );
			}
		}

		// Remove any excluded directories from showing up in this.
		$directory_exclusions = self::get_directory_exclusions( pb_backupbuddy::$options['profiles'][0] ); // default profile.
		$wordpress_locations = array_diff( $wordpress_locations, $directory_exclusions );

		return $wordpress_locations;
	} // End get_wordpress_locations().



	/* periodic_cleanup()
	 *
	 * Periodic housekeeping cleanup function to clean up after BackupBuddy. Clean up orphaned files, data structure,
	 * old log files, etc. Also verifies anti-directory browsing files exist in expected locations and any potential
	 * problems are handled.
	 *
	 * @param	int		$backup_age_limit		Maximum age (in seconds) to allow logs or other transient files/structures to exist after no longer needed. Default: 172800 (48 hours).
	 * @param	bool	$die_on_fail			Whether or not to die fatally if something goes wrong (such as unable to make anti-directory browsing files).
	 *
	 */
	public static function periodic_cleanup( $backup_age_limit = 172800, $die_on_fail = true ) {

		include( '_periodicCleanup.php' );

	} // End periodic_cleanup().



	/* final_cleanup()
	 *
	 * Final cleanup scheduled by each backup for cleaning up in the future. Helps catch failed backups.
	 *
	 * @param	string	$serial		Unique backup serial which we will be cleaning up for.
	 * @return	null
	 *
	 */
	public static function final_cleanup( $serial ) {

		if ( !isset( pb_backupbuddy::$options ) ) {
			pb_backupbuddy::load();
		}
		pb_backupbuddy::status( 'details', 'cron_final_cleanup started' );

		require_once( pb_backupbuddy::plugin_path() . '/classes/fileoptions.php' );
		pb_backupbuddy::status( 'details', 'Fileoptions instance #31.' );
		$backup_options = new pb_backupbuddy_fileoptions( backupbuddy_core::getLogDirectory() . 'fileoptions/' . $serial . '.txt', $read_only = true );
		if ( true !== ( $result = $backup_options->is_ok() ) ) {
			pb_backupbuddy::status( 'error', 'Unable to open fileoptions file.' );
		}

		// Delete temporary data directory.
		if ( isset( $backup_options->options['temp_directory'] ) && file_exists( $backup_options->options['temp_directory'] ) ) {
			pb_backupbuddy::$filesystem->unlink_recursive( $backup_options->options['temp_directory'] );
		}

		// Delete temporary zip directory.
		if ( isset( $backup_options->options['temporary_zip_directory'] ) && file_exists( $backup_options->options['temporary_zip_directory'] ) ) {
			pb_backupbuddy::$filesystem->unlink_recursive( $backup_options->options['temporary_zip_directory'] );
		}

		// Delete status log text file.
		if ( file_exists( backupbuddy_core::getBackupDirectory() . 'temp_status_' . $serial . '.txt' ) ) {
			unlink( backupbuddy_core::getBackupDirectory() . 'temp_status_' . $serial. '.txt' );
		}

	} // End final_cleanup().



	/*	trim_remote_send_stats()
	 *	
	 *	Handles trimming the number of remote sends to the most recent ones.
	 *	Recent transfer logs are kept for TRIPLE the max age as they are important for troubleshooting.
	 *	
	 *	@return		null
	 */
	public static function trim_remote_send_stats() {

		$limit = (int)pb_backupbuddy::$options['max_send_stats_count']; // Maximum number of remote sends to keep track of.
		$max_age = (int)pb_backupbuddy::$options['max_send_stats_days'] * 60 * 60 * 24;

		$send_fileoptions = pb_backupbuddy::$filesystem->glob_by_date( backupbuddy_core::getLogDirectory() . 'fileoptions/send-*.txt' );
		if ( ! is_array( $send_fileoptions ) ) {
			$send_fileoptions = array();
		}
		// Return if limit not yet met.
		if ( count( $send_fileoptions ) <= $limit ) {
			return;
		}

		$i = 0;
		foreach( $send_fileoptions as $send_fileoption ) {
			$i++;
			if ( $i > $limit ) {
				$modified = filemtime( $send_fileoption );
				if ( ( time() - $modified ) > $max_age ) {
					if ( false === @unlink( $send_fileoption ) ) {
						pb_backupbuddy::status( 'error', 'Unable to delete old remote send log file `' . $send_fileoption . '`. You may manually delete it. Check directory permissions for future cleanup.' );
					}
				}
			}
		}

		return;

	} // End trim_remote_send_stats().



	/*	get_site_size()
	 *	
	 *	Returns an array with the site size and the site size sans exclusions. Saves updates stats in options.
	 *	
	 *	@return		array		Index 0: site size; Index 1: site size sans excluded files/dirs.; Index 2: Total number of objects (files+folders); Index 3: Total objects sans excluded files/folders.
	 */
	public static function get_site_size() {
		$exclusions = backupbuddy_core::get_directory_exclusions( pb_backupbuddy::$options['profiles'][0] );
		$dir_array = array();
		$result = pb_backupbuddy::$filesystem->dir_size_map( ABSPATH, ABSPATH, $exclusions, $dir_array );
		unset( $dir_array ); // Free this large chunk of memory.

		$total_size = pb_backupbuddy::$options['stats']['site_size'] = $result[0];
		$total_size_excluded = pb_backupbuddy::$options['stats']['site_size_excluded'] = $result[1];
		$total_objects = pb_backupbuddy::$options['stats']['site_objects'] = $result[2];
		$total_objects_excluded = pb_backupbuddy::$options['stats']['site_objects_excluded'] = $result[3];
		pb_backupbuddy::$options['stats']['site_size_updated'] = time();
		pb_backupbuddy::save();

		return array( $total_size, $total_size_excluded, $total_objects, $total_objects_excluded );
	} // End get_site_size().



	/*	get_database_size()
	 *	
	 *	Return array of database size, database sans exclusions.
	 *	
	 *	@return		array			Index 0: db size, Index 1: db size sans exclusions.
	 */
	public static function get_database_size( $profile_id = 0 ) {
		global $wpdb;
		$prefix = $wpdb->prefix;
		$prefix_length = strlen( $wpdb->prefix );

		$additional_includes = explode( "\n", pb_backupbuddy::$options['profiles'][$profile_id]['mysqldump_additional_includes'] );
		array_walk( $additional_includes, create_function('&$val', '$val = trim($val);'));
		$additional_excludes = explode( "\n", pb_backupbuddy::$options['profiles'][$profile_id]['mysqldump_additional_excludes'] );
		array_walk( $additional_excludes, create_function('&$val', '$val = trim($val);'));

		$total_size = 0;
		$total_size_with_exclusions = 0;
		$rows = $wpdb->get_results( "SHOW TABLE STATUS", ARRAY_A );
		foreach( $rows as $row ) {
			$excluded = true; // Default.

			// TABLE STATUS.
			$rowsb = $wpdb->get_results( "CHECK TABLE `{$row['Name']}`", ARRAY_A );
			foreach( $rowsb as $rowb ) {
				if ( $rowb['Msg_type'] == 'status' ) {
					$status = $rowb['Msg_text'];
				}
			}
			unset( $rowsb );

			// TABLE SIZE.
			$size = ( $row['Data_length'] + $row['Index_length'] );
			$total_size += $size;


			// HANDLE EXCLUSIONS.
			if ( pb_backupbuddy::$options['profiles'][$profile_id]['backup_nonwp_tables'] == 0 ) { // Only matching prefix.
				if ( ( substr( $row['Name'], 0, $prefix_length ) == $prefix ) OR ( in_array( $row['Name'], $additional_includes ) ) ) {
					if ( !in_array( $row['Name'], $additional_excludes ) ) {
						$total_size_with_exclusions += $size;
						$excluded = false;
					}
				}
			} else { // All tables.
				if ( !in_array( $row['Name'], $additional_excludes ) ) {
					$total_size_with_exclusions += $size;
					$excluded = false;
				}
			}

		}

		pb_backupbuddy::$options['stats']['db_size'] = $total_size;
		pb_backupbuddy::$options['stats']['db_size_excluded'] = $total_size_with_exclusions;
		pb_backupbuddy::$options['stats']['db_size_updated'] = time();
		pb_backupbuddy::save();

		unset( $rows );

		return array( $total_size, $total_size_with_exclusions );
	} // End get_database_size().



	/* kick_db()
	 *
	 * Attempt to verify the database server is still alive and functioning.  If not, try to re-establish connection.
	 *
	 */
	public static function kick_db() {

		$kick_db = true; // Change true to false for debugging purposes to disable kicker.

		// Need to make sure the database connection is active. Sometimes it goes away during long bouts doing other things -- sigh.
		// This is not essential so use include and not require (suppress any warning)
		if ( $kick_db === true ) {
			@include_once( pb_backupbuddy::plugin_path() . '/lib/wpdbutils/wpdbutils.php' );
			if ( class_exists( 'pluginbuddy_wpdbutils' ) ) {
				// This is the database object we want to use
				global $wpdb;

				// Get our helper object and let it use us to output status messages
				$dbhelper = new pluginbuddy_wpdbutils( $wpdb );

				// If we cannot kick the database into life then signal the error and return false which will stop the backup
				// Otherwise all is ok and we can just fall through and let the function return true
				if ( !$dbhelper->kick() ) {
					pb_backupbuddy::status( 'error', __('Database Server has gone away, unable to update remote destination transfer status. This is most often caused by mysql running out of memory or timing out far too early. Please contact your host.', 'it-l10n-backupbuddy' ) );
				}
			} else {
				// Utils not available so cannot verify database connection status - just notify
				pb_backupbuddy::status( 'details', __('Database Server connection status unverified.', 'it-l10n-backupbuddy' ) );
			}
		}

	} // End kick_db().



	/* verify_directories()
	 *
	 * Verify existance and security of key directories. Result available via global $pb_backupbuddy_directory_verification with return value.
	 *
	 * @return		bool		true on success creating / verifying, else false.
	 *
	 */
	public static function verify_directories( $skipTempGeneration = false ) {
		
		$success = true;

		// Update backup directory if unable to write to the defined one.
		if ( ! @is_writable( backupbuddy_core::getBackupDirectory() ) ) {
			pb_backupbuddy::status( 'details', 'Backup directory invalid. Updating from `' . backupbuddy_core::getBackupDirectory() . '` to default.' );
			pb_backupbuddy::$options['backup_directory'] = ''; // Reset to default (blank).
			pb_backupbuddy::save();
		}
		$response = pb_backupbuddy::anti_directory_browsing( backupbuddy_core::getBackupDirectory(), $die = false );
		if ( false === $response ) {
			$success = false;
		}

		// Update log directory if unable to write to the defined one.
		if ( ! @is_writable( backupbuddy_core::getLogDirectory() ) ) {
			pb_backupbuddy::status( 'details', 'Log directory invalid. Updating from `' . backupbuddy_core::getLogDirectory() . '` to default.' );
			pb_backupbuddy::$options['log_directory'] = ''; // Reset to default (blank).
			pb_backupbuddy::save();
		}
		pb_backupbuddy::anti_directory_browsing( backupbuddy_core::getLogDirectory(), $die = false );
		if ( false === $response ) {
			$success = false;
		}

		// Update temp directory if unable to write to the defined one.
		if ( true !== $skipTempGeneration ) {
			if ( ! @is_writable( backupbuddy_core::getTempDirectory() ) ) {
				pb_backupbuddy::status( 'details', 'Temporary directory invalid. Updating from `' . backupbuddy_core::getTempDirectory() . '` to default.' );
				pb_backupbuddy::$options['temp_directory'] = '';
				pb_backupbuddy::save();
			}
			pb_backupbuddy::anti_directory_browsing( backupbuddy_core::getTempDirectory(), $die = false );
			if ( false === $response ) {
				$success = false;
			}
		}

		global $pb_backupbuddy_directory_verification;
		$pb_backupbuddy_directory_verification = $success;
		return $success;

	} // End verify_directories().



	/* schedule_single_event()
	 *
	 * API to wp_schedule_single_event() that also verifies that the schedule actually got created in WordPRess.
	 * Sometimes the database rejects this update so we need to do actual verification.
	 *
	 * @return	boolean			True on verified schedule success, else false.
	 */
	public static function schedule_single_event( $time, $tag, $args ) {
		$schedule_result = wp_schedule_single_event( $time, $tag, $args ); // Schedule.
		$next_scheduled = wp_next_scheduled( $tag, $args ); // Retrieve schedule to verify it stuck.
		if ( FALSE === $schedule_result ) {
			pb_backupbuddy::status( 'error', 'Unable to create schedule as wp_schedule_single_event() returned false. A plugin may have prevented it.' );
			return false;
		}
		if ( FALSE === $next_scheduled ) {
			pb_backupbuddy::status( 'error', 'WordPress reported success scheduling BUT wp_next_scheduled() could NOT confirm schedule existance. The database may have rejected the update.' );
			return false;
		}

		return true;
	} // End schedule_single_event().



	/* schedule_event()
	 *
	 * API to wp_schedule_event() that also verifies that the schedule actually got created in WordPRess.
	 * Sometimes the database rejects this update so we need to do actual verification.
	 *
	 * @return	boolean			True on verified schedule success, else false.
	 */
	public static function schedule_event( $time, $period, $tag, $args ) {
		$schedule_result = wp_schedule_event( $time, $period, $tag, $args );
		$next_scheduled = wp_next_scheduled( $tag, $args );
		if ( FALSE === $schedule_result ) {
			pb_backupbuddy::status( 'error', 'Unable to create schedule as wp_schedule_event() returned false. A plugin may have prevented it.' );
			return false;
		}
		if ( FALSE === $next_scheduled ) {
			pb_backupbuddy::status( 'error', 'WordPress reported success scheduling BUT wp_next_scheduled() could NOT confirm schedule existance. The database may have rejected the update.' );
			return false;
		}

		return true;
	} // End schedule_event().



	/* unschedule_event()
	 *
	 * API to wp_unschedule_event() that also verifies that the schedule actually got removed WordPRess.
	 * Sometimes the database rejects this update so we need to do actual verification.
	 *
	 * @return	boolean			True on verified schedule deletion success, else false.
	 */
	public static function unschedule_event( $time, $tag, $args ) {
		$unschedule_result = wp_unschedule_event( $time, $tag, $args );
		$next_scheduled = wp_next_scheduled( $tag, $args );
		if ( FALSE === $unschedule_result ) {
			pb_backupbuddy::status( 'error', 'Unable to remove schedule as wp_unschedule_event() returned false. A plugin may have prevented it.' );
			return false;
		}
		if ( FALSE !== $next_scheduled ) {
			pb_backupbuddy::status( 'error', 'WordPress reported success unscheduling BUT wp_next_scheduled() confirmed schedule existance. The database may have rejected the removal.' );
			return false;
		}

		return true;
	} // End unschedule_event().



	/* normalize_comment_data()
	 *
	 * Handle normalizing zip comment data, defaults, etc.
	 *
	 * @param	array	$comment	Array of meta data to normalize & apply defaults to.
	 * @return	array				Normalized array.
	 */
	public static function normalize_comment_data( $comment ) {

		$defaults = array(
			'serial'		=>	'',
			'siteurl'		=>	'',
			'type'			=>	'',
			'profile'		=>	'',
			'created'		=>	'',
			'db_prefix'		=>	'',
			'bb_version'	=>	'',
			'wp_version'	=>	'',
			'posts'			=>	'',
			'pages'			=>	'',
			'comments'		=>	'',
			'users'			=>	'',
			'dat_path'		=>	'',
			'note'			=>	'',
		);

		if ( ! is_array( $comment ) ) { // Plain text; place in note field.
			if ( is_string( $comment ) ) {
				$defaults['note'] = $comment;
			}
			return $defaults;
		} else { // Array. Merge defaults and return.
			return array_merge( $defaults, $comment );
		}

	} // End normalize_comment_data().
	
	
	
	/* cleanTempDir()
	 *
	 * Cleans out any old temp files. Called by periodic cleanup function and post_backup in backup.php.
	 *
	 */
	public static function cleanTempDir( $backup_age_limit = 172800 ) {
		// Remove any old temporary directories in wp-content/uploads/backupbuddy_temp/. Logs any directories it cannot delete.
		pb_backupbuddy::status( 'details', 'Cleaning up any old temporary zip directories in: wp-content/uploads/backupbuddy_temp/. If no recent backups then the temp directory will also be purged.' );
		$recentBackupFound = false;
		$temp_directory = backupbuddy_core::getTempDirectory();
		$files = glob( $temp_directory . '*' );
		if ( is_array( $files ) && !empty( $files ) ) { // For robustness. Without open_basedir the glob() function returns an empty array for no match. With open_basedir in effect the glob() function returns a boolean false for no match.
			foreach( $files as $file ) {
				if ( ( strpos( $file, 'index.' ) !== false ) || ( strpos( $file, '.htaccess' ) !== false ) ) { // Index file or htaccess dont get deleted so go to next file.
					continue;
				}
				$file_stats = stat( $file );
				if ( ( 0 == $backup_age_limit ) || ( ( time() - $file_stats['mtime'] ) > $backup_age_limit ) ) { // If older than 12 hours, delete the log.
					if ( @pb_backupbuddy::$filesystem->unlink_recursive( $file ) === false ) {
						pb_backupbuddy::status( 'error', 'Unable to clean up (delete) temporary directory/file: `' . $file . '`. You should manually delete it or check permissions.' );
					}
				} else { // Not very old.
					$recentBackupFound = true;
				}
			}
			if ( false === $recentBackupFound ) {
				pb_backupbuddy::$filesystem->unlink_recursive( $temp_directory ); // Delete temp directory (as of BB v5.0). This is not critical but nice. The backup cleanup step should purge these so if all is going well this probably will not find anything.
			}
		}
		unset( $recentBackupFound );
	} // End cleanTempDir().
	
	
	
	/* pretty_meta_info()
	 *
	 * Translates meta information field names and values into nice readable forms.
	 *
	 * @param	string	$comment_line_name		Meta field name.
	 * @param	string	$comment_line_value		Value of meta item.
	 * @return	array|false 					Array with two entries: the updates comment line name and updated comment line value. false if empty.
	 *
	 */
	public static function pretty_meta_info( $comment_line_name, $comment_line_value ) {

		if ( $comment_line_name == 'serial' ) {
			$comment_line_name = 'Unique serial identifier';
		} elseif ( $comment_line_name == 'siteurl' ) {
			$comment_line_name = 'Site URL';
		} elseif ( $comment_line_name == 'type' ) {
			$comment_line_name = 'Backup Type';
			if ( $comment_line_value == 'db' ) {
				$comment_line_value = 'Database';
			} elseif ( $comment_line_value == 'full' ) {
				$comment_line_value = 'Full';
			} elseif ( $comment_line_value == 'export' ) {
				$comment_line_value = 'Multisite Subsite Export';
			}
		} elseif ( $comment_line_name == 'profile' ) {
			$comment_line_name = 'Backup Profile';
		} elseif ( $comment_line_name == 'created' ) {
			$comment_line_name = 'Creation Date';
			if ( $comment_line_value != '' ) {
				$comment_line_value = pb_backupbuddy::$format->date( pb_backupbuddy::$format->localize_time( $comment_line_value ) );
			}
		} elseif ( $comment_line_name == 'bb_version' ) {
			$comment_line_name = 'BackupBuddy version at creation';
		} elseif ( $comment_line_name == 'wp_version' ) {
			$comment_line_name = 'WordPress version at creation';
		} elseif ( $comment_line_name == 'dat_path' ) {
			$comment_line_name = 'BackupBuddy data file (relative)';
		} elseif ( $comment_line_name == 'posts' ) {
			$comment_line_name = 'Total Posts';
		} elseif ( $comment_line_name == 'pages' ) {
			$comment_line_name = 'Total Pages';
		} elseif ( $comment_line_name == 'comments' ) {
			$comment_line_name = 'Total Comments';
		} elseif ( $comment_line_name == 'users' ) {
			$comment_line_name = 'Total Users';
		} elseif ( $comment_line_name == 'note' ) {
			$comment_line_name = 'User-specified note';
			if ( $comment_line_value != '' ) {
				$comment_line_value = '"' . htmlentities( $comment_line_value ) . '"';
			}
		} else {
			$comment_line_name = $comment_line_name;
		}

		if ( $comment_line_value != '' ) {
			return array( $comment_line_name, $comment_line_value );
		} else {
			return array( $comment_line_name, '-Empty-' );
		}

	} // End pretty_meta_info().



	/* alert_core_table_excludes()
	 *
	 * Outputs an alert warning if a core db table is excluded.
	 *
	 * @param	array 		$excludes	Array of tables excluded from the backup.
	 * @return	array 					Array of message warnings about potential issues found with these exclusions, if any. Index = unique identifer, Value = message.
	 *
	 */
	public static function alert_core_table_excludes( $excludes ) {
		global $wpdb;
		$prefix = $wpdb->prefix;

		// If these tables are found excluded then warn that may be a bad idea.
		$warn_tables = array(
			$prefix . 'comments',
			$prefix . 'posts',
			$prefix . 'users',
			$prefix . 'commentmeta',
			$prefix . 'postmeta',
			$prefix . 'term_relationships',
			$prefix . 'options',
			$prefix . 'term_taxonomy',
			$prefix . 'links',
			$prefix . 'terms',
		);

		$return_array = array();
		foreach( $warn_tables as $warn_table ) {
			if ( in_array( $warn_table, $excludes ) ) {
				$return_array['excluding_coretable-' . md5( $warn_table )] = 'Warning: You are excluding one or more core WordPress tables `' . $warn_table . '` which may result in an incomplete backup. Remove exclusions or backup with another profile or method.';
			}
		}

		return $return_array;
	} // End alert_core_tables_excludes().



	/* alert_core_file_excludes()
	 *
	 * Outputs an alert warning if a core db table is excluded.
	 *
	 * @param	array 		$excludes		Array of paths excluded from the backup.
	 * @return	array 						Array of message warnings about potential issues found with these exclusions, if any. Index = unique identifer, Value = message.
	 *
	 */
	public static function alert_core_file_excludes( $excludes ) {

		// If these paths are found excluded then warn that may be a bad idea.
		$warn_dirs = array( // No trailing slash.
			'/wp-content',
			'/wp-content/uploads',
			'/wp-content/uploads/backupbuddy_temp',
			'/' . ltrim( str_replace( ABSPATH, '', backupbuddy_core::getBackupDirectory() ), '\\/' ),
		);

		foreach( $excludes as &$exclude ) { // Strip trailing slash(es).
			$exclude = rtrim( $exclude, '\\/' );
		}

		$return_array = array();
		foreach( $warn_dirs as $warn_dir ) {
			if ( in_array( $warn_dir, $excludes ) ) {
				$return_array['excluding_corefile-' . md5( $warn_dir )] = 'Warning: You are excluding one or more WordPress core or BackupBuddy directories `' . $warn_dir . '` which may result in an incomplete or malfunctioning backup. Remove exclusions or backup with another profile or method to avoid problems.';
			}
		}

		return $return_array;
	} // End alert_core_file_excludes().



	/* getZipMeta()
	 *
	 * Output meta info in a table.
	 *
	 * @param	string		$file			Backup file to get comment meta data from.
	 * @return	array|false					Array of meta data or false on failure to retrieve.
	 *
	 */
	public static function getZipMeta( $file ) {
		if ( !isset( pb_backupbuddy::$classes['zipbuddy'] ) ) {
			require_once( pb_backupbuddy::plugin_path() . '/lib/zipbuddy/zipbuddy.php' );
			pb_backupbuddy::$classes['zipbuddy'] = new pluginbuddy_zipbuddy( backupbuddy_core::getBackupDirectory() );
		}
		$comment_meta = array();
		if ( isset( $file ) ) {
			$comment = pb_backupbuddy::$classes['zipbuddy']->get_comment( $file );
			$comment = backupbuddy_core::normalize_comment_data( $comment );

			$comment_meta = array();
			foreach( $comment as $comment_line_name => $comment_line_value ) { // Loop through all meta fields in the comment array to display.

				if ( false !== ( $response = backupbuddy_core::pretty_meta_info( $comment_line_name, $comment_line_value ) ) ) {
					$response[0] = '<span title="' . $comment_line_name . '">' . $response[0] . '</span>';
					$comment_meta[$comment_line_name] = $response;
				}

			}
		}

		if ( count( $comment_meta ) > 0 ) {
			return $comment_meta;
		} else {
			return false;
		}
	} // End getZipMeta().



	/* get_dat_file_array()
	 *
	 * Get the DAT file contents as an array.
	 *
	 * @param		string		$dat_file		Full path to DAT file to decode and parse.
	 * @return		array|false					Array of DAT content. Bool false when unable to read.
	 *
	 */
	public static function get_dat_file_array( $dat_file ) {
		pb_backupbuddy::status( 'details', 'Loading backup dat file.' );

		if ( file_exists( $dat_file ) ) {
			$backupdata = file_get_contents( $dat_file );
		} else { // Missing.
			pb_backupbuddy::status( 'error', 'Error #9003: BackupBuddy data file (backupbuddy_dat.php) missing or unreadable. There may be a problem with the backup file, the files could not be extracted (you may manually extract the zip file in this directory to manually do this portion of restore), or the files were deleted before this portion of the restore was reached.  Start the import process over or try manually extracting (unzipping) the files then starting over. Restore will not continue to protect integrity of any existing data.' );
			//die( ' Halted.' );
			return false;
		}

		// Unserialize data; If it fails it then decodes the obscufated data then unserializes it. (new dat file method starting at 2.0).
		if ( !is_serialized( $backupdata ) || ( false === ( $return = unserialize( $backupdata ) ) ) ) {
			// Skip first line.
			$second_line_pos = strpos( $backupdata, "\n" ) + 1;
			$backupdata = substr( $backupdata, $second_line_pos );

			// Decode back into an array.
			$return = unserialize( base64_decode( $backupdata ) );
		}

		if ( ! is_array( $return ) ) { // Invalid DAT content.
			pb_backupbuddy::status( 'error', 'Error #545545. Unable to read/decode DAT file.' );
			return false;
		}

		pb_backupbuddy::status( 'details', 'Successfully loaded backup dat file `' . $dat_file . '`.' );
		$return_censored = $return;
		$return_censored['db_password'] = '*HIDDEN*';
		$return_censored = print_r( $return_censored, true );
		$return_censored = str_replace( array( "\n", "\r" ), '; ', $return_censored );
		pb_backupbuddy::status( 'details', 'DAT contents: ' . $return_censored );
		return $return;
	} // End get_dat_file_array().



	/* determineLatestVersion()
	 *
	 * Latest version info. Array of latest major,minor. False on fail to get.
	 *
	 */
	public static function determineLatestVersion() {
		$latest_backupbuddy_version_cache_minutes = 60*12; // Define how many minutes to cache the latest backupbuddy version number.

		function pb_backupbuddy_split2( $string,$needle,$nth ) {
			$max = strlen($string);
			$n = 0;
			for($i=0;$i<$max;$i++){
				if ($string[$i]==$needle){
					$n++;
					if($n>=$nth){
						break;
					}
				}
			}
			$arr[] = substr($string,0,$i);
			$arr[] = substr($string,$i+1,$max);
			return $arr;
		}
		$latest_backupbuddy_version = get_transient( 'pb_backupbuddy_latest_version' );
		if ( ( false === $latest_backupbuddy_version ) || ( ! is_array( $latest_backupbuddy_version ) ) ) {
			$response = wp_remote_get( 'http://api.ithemes.com/product/version?apikey=ixho7dk0p244n0ob&package=backupbuddy&channel=stable', array(
					'method' => 'GET',
					'timeout' => 7,
					'redirection' => 3,
					'httpversion' => '1.0',
					//'blocking' => true,
					'headers' => array(),
					'body' => null,
					'cookies' => array()
				)
			);
			if( is_wp_error( $response ) ) {
				$latest_backupbuddy_version = array( 0, 0 ); // Set to 0 for transient to prevent hitting server again for a bit since something went wrong.
			} else {
				$minorVersion = $response['body'];
				$majorVersion = pb_backupbuddy_split2( $minorVersion, '.', 3 );
				$majorVersion = $majorVersion[0];
				$latest_backupbuddy_version = array( $minorVersion, $majorVersion );
			}
			set_transient( 'pb_backupbuddy_latest_version', $latest_backupbuddy_version, 60* $latest_backupbuddy_version_cache_minutes );
		} // end not cached.

		if ( ( 0 == $latest_backupbuddy_version[0] ) && ( 0 == $latest_backupbuddy_version[1] ) ) { // Server not responding.
			return false;
		}

		return $latest_backupbuddy_version;

	} // End determineLatestVersion().



	/* detectMaxExecutionTime()
	 *
	 * Attempt to detect the max execution time allowed by PHP. Defaults to 30 if unable to detect or a suspicious value is detected.
	 * IMPORTANT: This does NOT take into account user-specified override via settings page. For that, use adjustedMaxExecutionTime().
	 */
	public static function detectMaxExecutionTime() {
		$detected_max_execution_time = str_ireplace( 's', '', ini_get( 'max_execution_time' ) );
		if ( is_numeric( $detected_max_execution_time ) ) {
			$detected_max_execution_time = $detected_max_execution_time;
		} else {
			$detected_max_execution_time = 30;
		}
		if ( $detected_max_execution_time == '0' ) {
			$detected_max_execution_time = 30;
		}
		return $detected_max_execution_time;
	} // End detectMaxExecutionTime().
	
	
	
	// Same as detectedMaxExecutionTime EXCEPT takes into account user overrided value in settings (if any).
	public static function adjustedMaxExecutionTime() {
		$detected = self::detectMaxExecutionTime();
		if ( ( '' != pb_backupbuddy::$options['max_execution_time'] ) && ( is_numeric( pb_backupbuddy::$options['max_execution_time'] ) ) ) { // If set and a number, use user-specified runtime.
			return pb_backupbuddy::$options['max_execution_time'];
		} else { // Nothing user-specified so user detected value.
			return $detected;
		}
	} // End adjustedMaxExecutionTime().
	
	
	
	/* dbEscape()
	 *
	 * Escape SQL using either mysql or mysqli based on whichever WordPress is using.
	 * WP 3.9 introducing mysqli support.
	 */
	public static function dbEscape( $sql ) {
		global $wpdb;
		if ( isset( $wpdb->use_mysqli ) && ( true === $wpdb->use_mysqli ) ) { // Possible post WP 3.9
			return mysqli_real_escape_string( $wpdb->dbh, $sql );
		} else {
			return mysql_real_escape_string( $sql );
		}
	} // End dbEscape().
	
	
	
} // End class backupbuddy_core.