<?php
/**
 * Filesystem API: Top-level functionality
 *
 * Functions for reading, writing, modifying, and deleting files on the file system.
 * Includes functionality for theme-specific files as well as operations for uploading,
 * archiving, and rendering output when necessary.
 *
 * @package WordPress
 * @subpackage Filesystem
 * @since 2.3.0
 */

/** The descriptions for theme files. */
$wp_file_descriptions = array(
	'index.php' => __('Main Index Template'),
	'style.css' => __('Stylesheet'),
	'editor-style.css' => __('Visual Editor Stylesheet'),
	'editor-style-rtl.css' => __('Visual Editor RTL Stylesheet'),
	'rtl.css' => __('RTL Stylesheet'),
	'comments.php' => __('Comments'),
	'comments-popup.php' => __('Popup Comments'),
	'footer.php' => __('Theme Footer'),
	'header.php' => __('Theme Header'),
	'sidebar.php' => __('Sidebar'),
	'archive.php' => __('Archives'),
	'author.php' => __('Author Template'),
	'tag.php' => __('Tag Template'),
	'category.php' => __('Category Template'),
	'page.php' => __('Page Template'),
	'search.php' => __('Search Results'),
	'searchform.php' => __('Search Form'),
	'single.php' => __('Single Post'),
	'404.php' => __('404 Template'),
	'link.php' => __('Links Template'),
	'functions.php' => __('Theme Functions'),
	'attachment.php' => __('Attachment Template'),
	'image.php' => __('Image Attachment Template'),
	'video.php' => __('Video Attachment Template'),
	'audio.php' => __('Audio Attachment Template'),
	'application.php' => __('Application Attachment Template'),
	'my-hacks.php' => __('my-hacks.php (legacy hacks support)'),
	'.htaccess' => __('.htaccess (for rewrite rules )'),
	// Deprecated files
	'wp-layout.css' => __('Stylesheet'),
	'wp-comments.php' => __('Comments Template'),
	'wp-comments-popup.php' => __('Popup Comments Template'),
);

/**
 * Get the description for standard WordPress theme files and other various standard
 * WordPress files
 *
 * @since 1.5.0
 *
 * @global array $wp_file_descriptions
 * @param string $file Filesystem path or filename
 * @return string Description of file from $wp_file_descriptions or basename of $file if description doesn't exist.
 *                Appends 'Page Template' to basename of $file if the file is a page template
 */
function get_file_description($file) {
	global $wp_file_descriptions, $allowed_files;

	$relative_pathinfo = pathinfo($file);
	$file_path = $allowed_files[$file];
	if (isset($wp_file_descriptions[basename($file)]) && '.' === $relative_pathinfo['dirname']) {
		return $wp_file_descriptions[basename($file)];
	} elseif (file_exists($file_path) && is_file($file_path)) {
		$template_data = implode('', file($file_path));
		if (preg_match('|Template Name:(.*)$|mi', $template_data, $name)) {
			return sprintf(__('%s Page Template'), _cleanup_header_comment($name[1]));
		}
	}

	return trim(basename($file));
}

/**
 * Get the absolute filesystem path to the root of the WordPress installation
 *
 * @since 1.5.0
 *
 * @return string Full filesystem path to the root of the WordPress installation
 */
function get_home_path() {
	$home = set_url_scheme(get_option('home'), 'http');
	$siteurl = set_url_scheme(get_option('siteurl'), 'http');
	if (!empty($home) && 0 !== strcasecmp($home, $siteurl)) {
		$wp_path_rel_to_home = str_ireplace($home, '', $siteurl); /* $siteurl - $home */
		$pos = strripos(str_replace('\\', '/', $_SERVER['SCRIPT_FILENAME']), trailingslashit($wp_path_rel_to_home));
		$home_path = substr($_SERVER['SCRIPT_FILENAME'], 0, $pos);
		$home_path = trailingslashit($home_path);
	} else {
		$home_path = ABSPATH;
	}

	return str_replace('\\', '/', $home_path);
}

/**
 * Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep.
 * The depth of the recursiveness can be controlled by the $levels param.
 *
 * @since 2.6.0
 *
 * @param string $folder Optional. Full path to folder. Default empty.
 * @param int    $levels Optional. Levels of folders to follow, Default 100 (PHP Loop limit).
 * @return bool|array False on failure, Else array of files
 */
function list_files($folder = '', $levels = 100) {
	if (empty($folder)) {
		return false;
	}

	if (!$levels) {
		return false;
	}

	$files = array();
	if ($dir = @opendir($folder)) {
		while (($file = readdir($dir)) !== false) {
			if (in_array($file, array('.', '..'))) {
				continue;
			}

			if (is_dir($folder . '/' . $file)) {
				$files2 = list_files($folder . '/' . $file, $levels - 1);
				if ($files2) {
					$files = array_merge($files, $files2);
				} else {
					$files[] = $folder . '/' . $file . '/';
				}

			} else {
				$files[] = $folder . '/' . $file;
			}
		}
	}
	@closedir($dir);
	return $files;
}

/**
 * Returns a filename of a Temporary unique file.
 * Please note that the calling function must unlink() this itself.
 *
 * The filename is based off the passed parameter or defaults to the current unix timestamp,
 * while the directory can either be passed as well, or by leaving it blank, default to a writable temporary directory.
 *
 * @since 2.6.0
 *
 * @param string $filename Optional. Filename to base the Unique file off. Default empty.
 * @param string $dir      Optional. Directory to store the file in. Default empty.
 * @return string a writable filename
 */
function wp_tempnam($filename = '', $dir = '') {
	if (empty($dir)) {
		$dir = get_temp_dir();
	}

	if (empty($filename) || '.' == $filename || '/' == $filename) {
		$filename = time();
	}

	// Use the basename of the given file without the extension as the name for the temporary directory
	$temp_filename = basename($filename);
	$temp_filename = preg_replace('|\.[^.]*$|', '', $temp_filename);

	// If the folder is falsey, use its parent directory name instead.
	if (!$temp_filename) {
		return wp_tempnam(dirname($filename), $dir);
	}

	// Suffix some random data to avoid filename conflicts
	$temp_filename .= '-' . wp_generate_password(6, false);
	$temp_filename .= '.tmp';
	$temp_filename = $dir . wp_unique_filename($dir, $temp_filename);

	$fp = @fopen($temp_filename, 'x');
	if (!$fp && is_writable($dir) && file_exists($temp_filename)) {
		return wp_tempnam($filename, $dir);
	}
	if ($fp) {
		fclose($fp);
	}

	return $temp_filename;
}

/**
 * Make sure that the file that was requested to edit, is allowed to be edited
 *
 * Function will die if if you are not allowed to edit the file
 *
 * @since 1.5.0
 *
 * @param string $file file the users is attempting to edit
 * @param array $allowed_files Array of allowed files to edit, $file must match an entry exactly
 * @return string|null
 */
function validate_file_to_edit($file, $allowed_files = '') {
	$code = validate_file($file, $allowed_files);

	if (!$code) {
		return $file;
	}

	switch ($code) {
	case 1:
		die(__('Sorry, that file cannot be edited.'));

	// case 2 :
	// die( __('Sorry, can&#8217;t call files with their real path.' ));

	case 3:
		die(__('Sorry, that file cannot be edited.'));
	}
}

/**
 * Handle PHP uploads in WordPress, sanitizing file names, checking extensions for mime type,
 * and moving the file to the appropriate directory within the uploads directory.
 *
 * @since 4.0.0
 *
 * @see wp_handle_upload_error
 *
 * @param array       $file      Reference to a single element of $_FILES. Call the function once for each uploaded file.
 * @param array|false $overrides An associative array of names => values to override default variables. Default false.
 * @param string      $time      Time formatted in 'yyyy/mm'.
 * @param string      $action    Expected value for $_POST['action'].
 * @return array On success, returns an associative array of file attributes. On failure, returns
 *               $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
 */
function _wp_handle_upload(&$file, $overrides, $time, $action) {
	// The default error handler.
	if (!function_exists('wp_handle_upload_error')) {
		function wp_handle_upload_error(&$file, $message) {
			return array('error' => $message);
		}
	}

	/**
	 * Filter the data for a file before it is uploaded to WordPress.
	 *
	 * The dynamic portion of the hook name, `$action`, refers to the post action.
	 *
	 * @since 2.9.0 as 'wp_handle_upload_prefilter'.
	 * @since 4.0.0 Converted to a dynamic hook with `$action`.
	 *
	 * @param array $file An array of data for a single file.
	 */
	$file = apply_filters("{$action}_prefilter", $file);

	// You may define your own function and pass the name in $overrides['upload_error_handler']
	$upload_error_handler = 'wp_handle_upload_error';
	if (isset($overrides['upload_error_handler'])) {
		$upload_error_handler = $overrides['upload_error_handler'];
	}

	// You may have had one or more 'wp_handle_upload_prefilter' functions error out the file. Handle that gracefully.
	if (isset($file['error']) && !is_numeric($file['error']) && $file['error']) {
		return $upload_error_handler($file, $file['error']);
	}

	// Install user overrides. Did we mention that this voids your warranty?

	// You may define your own function and pass the name in $overrides['unique_filename_callback']
	$unique_filename_callback = null;
	if (isset($overrides['unique_filename_callback'])) {
		$unique_filename_callback = $overrides['unique_filename_callback'];
	}

	/*
		 * This may not have orignially been intended to be overrideable,
		 * but historically has been.
	*/
	if (isset($overrides['upload_error_strings'])) {
		$upload_error_strings = $overrides['upload_error_strings'];
	} else {
		// Courtesy of php.net, the strings that describe the error indicated in $_FILES[{form field}]['error'].
		$upload_error_strings = array(
			false,
			__('The uploaded file exceeds the upload_max_filesize directive in php.ini.'),
			__('The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form.'),
			__('The uploaded file was only partially uploaded.'),
			__('No file was uploaded.'),
			'',
			__('Missing a temporary folder.'),
			__('Failed to write file to disk.'),
			__('File upload stopped by extension.'),
		);
	}

	// All tests are on by default. Most can be turned off by $overrides[{test_name}] = false;
	$test_form = isset($overrides['test_form']) ? $overrides['test_form'] : true;
	$test_size = isset($overrides['test_size']) ? $overrides['test_size'] : true;

	// If you override this, you must provide $ext and $type!!
	$test_type = isset($overrides['test_type']) ? $overrides['test_type'] : true;
	$mimes = isset($overrides['mimes']) ? $overrides['mimes'] : false;

	// A correct form post will pass this test.
	if ($test_form && (!isset($_POST['action']) || ($_POST['action'] != $action))) {
		return call_user_func($upload_error_handler, $file, __('Invalid form submission.'));
	}
	// A successful upload will pass this test. It makes no sense to override this one.
	if (isset($file['error']) && $file['error'] > 0) {
		return call_user_func($upload_error_handler, $file, $upload_error_strings[$file['error']]);
	}

	$test_file_size = 'wp_handle_upload' === $action ? $file['size'] : filesize($file['tmp_name']);
	// A non-empty file will pass this test.
	if ($test_size && !($test_file_size > 0)) {
		if (is_multisite()) {
			$error_msg = __('File is empty. Please upload something more substantial.');
		} else {
			$error_msg = __('File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.');
		}
		return call_user_func($upload_error_handler, $file, $error_msg);
	}

	// A properly uploaded file will pass this test. There should be no reason to override this one.
	$test_uploaded_file = 'wp_handle_upload' === $action ? @is_uploaded_file($file['tmp_name']) : @is_file($file['tmp_name']);
	if (!$test_uploaded_file) {
		return call_user_func($upload_error_handler, $file, __('Specified file failed upload test.'));
	}

	// A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter.
	if ($test_type) {
		$wp_filetype = wp_check_filetype_and_ext($file['tmp_name'], $file['name'], $mimes);
		$ext = empty($wp_filetype['ext']) ? '' : $wp_filetype['ext'];
		$type = empty($wp_filetype['type']) ? '' : $wp_filetype['type'];
		$proper_filename = empty($wp_filetype['proper_filename']) ? '' : $wp_filetype['proper_filename'];

		// Check to see if wp_check_filetype_and_ext() determined the filename was incorrect
		if ($proper_filename) {
			$file['name'] = $proper_filename;
		}
		if ((!$type || !$ext) && !current_user_can('unfiltered_upload')) {
			return call_user_func($upload_error_handler, $file, __('Sorry, this file type is not permitted for security reasons.'));
		}
		if (!$type) {
			$type = $file['type'];
		}
	} else {
		$type = '';
	}

	/*
		 * A writable uploads dir will pass this test. Again, there's no point
		 * overriding this one.
	*/
	if (!(($uploads = wp_upload_dir($time)) && false === $uploads['error'])) {
		return call_user_func($upload_error_handler, $file, $uploads['error']);
	}

	$filename = wp_unique_filename($uploads['path'], $file['name'], $unique_filename_callback);

	// Move the file to the uploads dir.
	$new_file = $uploads['path'] . "/$filename";
	if ('wp_handle_upload' === $action) {
		$move_new_file = @move_uploaded_file($file['tmp_name'], $new_file);
	} else {
		// use copy and unlink because rename breaks streams.
		$move_new_file = @copy($file['tmp_name'], $new_file);
		unlink($file['tmp_name']);
	}

	if (false === $move_new_file) {
		if (0 === stripos($uploads['basedir'], ABSPATH)) {
			$error_path = str_replace(ABSPATH, '', $uploads['basedir']) . $uploads['subdir'];
		} else {
			$error_path = basename($uploads['basedir']) . $uploads['subdir'];
		}
		return $upload_error_handler($file, sprintf(__('The uploaded file could not be moved to %s.'), $error_path));
	}

	// Set correct file permissions.
	$stat = stat(dirname($new_file));
	$perms = $stat['mode'] & 0000666;
	@chmod($new_file, $perms);

	// Compute the URL.
	$url = $uploads['url'] . "/$filename";

	if (is_multisite()) {
		delete_transient('dirsize_cache');
	}

	/**
	 * Filter the data array for the uploaded file.
	 *
	 * @since 2.1.0
	 *
	 * @param array  $upload {
	 *     Array of upload data.
	 *
	 *     @type string $file Filename of the newly-uploaded file.
	 *     @type string $url  URL of the uploaded file.
	 *     @type string $type File type.
	 * }
	 * @param string $context The type of upload action. Values include 'upload' or 'sideload'.
	 */
	return apply_filters('wp_handle_upload', array(
		'file' => $new_file,
		'url' => $url,
		'type' => $type,
	), 'wp_handle_sideload' === $action ? 'sideload' : 'upload');}

/**
 * Wrapper for _wp_handle_upload(), passes 'wp_handle_upload' action.
 *
 * @since 2.0.0
 *
 * @see _wp_handle_upload()
 *
 * @param array      $file      Reference to a single element of $_FILES. Call the function once for
 *                              each uploaded file.
 * @param array|bool $overrides Optional. An associative array of names=>values to override default
 *                              variables. Default false.
 * @param string     $time      Optional. Time formatted in 'yyyy/mm'. Default null.
 * @return array On success, returns an associative array of file attributes. On failure, returns
 *               $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
 */
function wp_handle_upload(&$file, $overrides = false, $time = null) {
	/*
		 *  $_POST['action'] must be set and its value must equal $overrides['action']
		 *  or this:
	*/
	$action = 'wp_handle_upload';
	if (isset($overrides['action'])) {
		$action = $overrides['action'];
	}

	return _wp_handle_upload($file, $overrides, $time, $action);
}

/**
 * Wrapper for _wp_handle_upload(), passes 'wp_handle_sideload' action
 *
 * @since 2.6.0
 *
 * @see _wp_handle_upload()
 *
 * @param array      $file      An array similar to that of a PHP $_FILES POST array
 * @param array|bool $overrides Optional. An associative array of names=>values to override default
 *                              variables. Default false.
 * @param string     $time      Optional. Time formatted in 'yyyy/mm'. Default null.
 * @return array On success, returns an associative array of file attributes. On failure, returns
 *               $overrides['upload_error_handler'](&$file, $message ) or array( 'error'=>$message ).
 */
function wp_handle_sideload(&$file, $overrides = false, $time = null) {
	/*
		 *  $_POST['action'] must be set and its value must equal $overrides['action']
		 *  or this:
	*/
	$action = 'wp_handle_sideload';
	if (isset($overrides['action'])) {
		$action = $overrides['action'];
	}
	return _wp_handle_upload($file, $overrides, $time, $action);
}

/**
 * Downloads a url to a local temporary file using the WordPress HTTP Class.
 * Please note, That the calling function must unlink() the file.
 *
 * @since 2.5.0
 *
 * @param string $url the URL of the file to download
 * @param int $timeout The timeout for the request to download the file default 300 seconds
 * @return mixed WP_Error on failure, string Filename on success.
 */
function download_url($url, $timeout = 300) {
	//WARNING: The file is not automatically deleted, The script must unlink() the file.
	if (!$url) {
		return new WP_Error('http_no_url', __('Invalid URL Provided.'));
	}

	$tmpfname = wp_tempnam($url);
	if (!$tmpfname) {
		return new WP_Error('http_no_file', __('Could not create Temporary file.'));
	}

	$response = wp_safe_remote_get($url, array('timeout' => $timeout, 'stream' => true, 'filename' => $tmpfname));

	if (is_wp_error($response)) {
		unlink($tmpfname);
		return $response;
	}

	if (200 != wp_remote_retrieve_response_code($response)) {
		unlink($tmpfname);
		return new WP_Error('http_404', trim(wp_remote_retrieve_response_message($response)));
	}

	$content_md5 = wp_remote_retrieve_header($response, 'content-md5');
	if ($content_md5) {
		$md5_check = verify_file_md5($tmpfname, $content_md5);
		if (is_wp_error($md5_check)) {
			unlink($tmpfname);
			return $md5_check;
		}
	}

	return $tmpfname;
}

/**
 * Calculates and compares the MD5 of a file to its expected value.
 *
 * @since 3.7.0
 *
 * @param string $filename The filename to check the MD5 of.
 * @param string $expected_md5 The expected MD5 of the file, either a base64 encoded raw md5, or a hex-encoded md5
 * @return bool|object WP_Error on failure, true on success, false when the MD5 format is unknown/unexpected
 */
function verify_file_md5($filename, $expected_md5) {
	if (32 == strlen($expected_md5)) {
		$expected_raw_md5 = pack('H*', $expected_md5);
	} elseif (24 == strlen($expected_md5)) {
		$expected_raw_md5 = base64_decode($expected_md5);
	} else {
		return false;
	}
	// unknown format

	$file_md5 = md5_file($filename, true);

	if ($file_md5 === $expected_raw_md5) {
		return true;
	}

	return new WP_Error('md5_mismatch', sprintf(__('The checksum of the file (%1$s) does not match the expected checksum value (%2$s).'), bin2hex($file_md5), bin2hex($expected_raw_md5)));
}

/**
 * Unzips a specified ZIP file to a location on the Filesystem via the WordPress Filesystem Abstraction.
 * Assumes that WP_Filesystem() has already been called and set up. Does not extract a root-level __MACOSX directory, if present.
 *
 * Attempts to increase the PHP Memory limit to 256M before uncompressing,
 * However, The most memory required shouldn't be much larger than the Archive itself.
 *
 * @since 2.5.0
 *
 * @global WP_Filesystem_Base $wp_filesystem Subclass
 *
 * @param string $file Full path and filename of zip archive
 * @param string $to Full path on the filesystem to extract archive to
 * @return mixed WP_Error on failure, True on success
 */
function unzip_file($file, $to) {
	global $wp_filesystem;

	if (!$wp_filesystem || !is_object($wp_filesystem)) {
		return new WP_Error('fs_unavailable', __('Could not access filesystem.'));
	}

	// Unzip can use a lot of memory, but not this much hopefully
	/** This filter is documented in wp-admin/admin.php */
	@ini_set('memory_limit', apply_filters('admin_memory_limit', WP_MAX_MEMORY_LIMIT));

	$needed_dirs = array();
	$to = trailingslashit($to);

	// Determine any parent dir's needed (of the upgrade directory)
	if (!$wp_filesystem->is_dir($to)) {
		//Only do parents if no children exist
		$path = preg_split('![/\\\]!', untrailingslashit($to));
		for ($i = count($path); $i >= 0; $i--) {
			if (empty($path[$i])) {
				continue;
			}

			$dir = implode('/', array_slice($path, 0, $i + 1));
			if (preg_match('!^[a-z]:$!i', $dir)) // Skip it if it looks like a Windows Drive letter.
			{
				continue;
			}

			if (!$wp_filesystem->is_dir($dir)) {
				$needed_dirs[] = $dir;
			} else {
				break;
			}
			// A folder exists, therefor, we dont need the check the levels below this
		}
	}

	/**
	 * Filter whether to use ZipArchive to unzip archives.
	 *
	 * @since 3.0.0
	 *
	 * @param bool $ziparchive Whether to use ZipArchive. Default true.
	 */
	if (class_exists('ZipArchive', false) && apply_filters('unzip_file_use_ziparchive', true)) {
		$result = _unzip_file_ziparchive($file, $to, $needed_dirs);
		if (true === $result) {
			return $result;
		} elseif (is_wp_error($result)) {
			if ('incompatible_archive' != $result->get_error_code()) {
				return $result;
			}

		}
	}
	// Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file.
	return _unzip_file_pclzip($file, $to, $needed_dirs);
}

/**
 * This function should not be called directly, use unzip_file instead. Attempts to unzip an archive using the ZipArchive class.
 * Assumes that WP_Filesystem() has already been called and set up.
 *
 * @since 3.0.0
 * @see unzip_file
 * @access private
 *
 * @global WP_Filesystem_Base $wp_filesystem Subclass
 *
 * @param string $file Full path and filename of zip archive
 * @param string $to Full path on the filesystem to extract archive to
 * @param array $needed_dirs A partial list of required folders needed to be created.
 * @return mixed WP_Error on failure, True on success
 */
function _unzip_file_ziparchive($file, $to, $needed_dirs = array()) {
	global $wp_filesystem;
	if (!$wp_filesystem) {
		initiate_filesystem_wptc();
		if (empty($wp_filesystem)) {
			send_response_wptc('FS_INIT_FAILED-021');
			return false;
		}
	}
	$z = new ZipArchive();

	$zopen = $z->open($file, ZIPARCHIVE::CHECKCONS);
	if (true !== $zopen) {
		return new WP_Error('incompatible_archive', __('Incompatible Archive.'), array('ziparchive_error' => $zopen));
	}

	$uncompressed_size = 0;

	for ($i = 0; $i < $z->numFiles; $i++) {
		if (!$info = $z->statIndex($i)) {
			return new WP_Error('stat_failed_ziparchive', __('Could not retrieve file from archive.'));
		}

		if ('__MACOSX/' === substr($info['name'], 0, 9)) // Skip the OS X-created __MACOSX directory
		{
			continue;
		}

		$uncompressed_size += $info['size'];

		if ('/' == substr($info['name'], -1)) // directory
		{
			$needed_dirs[] = $to . untrailingslashit($info['name']);
		} else {
			$needed_dirs[] = $to . untrailingslashit(dirname($info['name']));
		}

	}

	/*
		 * disk_free_space() could return false. Assume that any falsey value is an error.
		 * A disk that has zero free bytes has bigger problems.
		 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer.
	*/
	if (defined('DOING_CRON') && DOING_CRON) {
		$available_space = @disk_free_space(WP_CONTENT_DIR);
		if ($available_space && ($uncompressed_size * 2.1) > $available_space) {
			return new WP_Error('disk_full_unzip_file', __('Could not copy files. You may have run out of disk space.'), compact('uncompressed_size', 'available_space'));
		}

	}

	$needed_dirs = array_unique($needed_dirs);
	foreach ($needed_dirs as $dir) {
		// Check the parent folders of the folders all exist within the creation array.
		if (untrailingslashit($to) == $dir) // Skip over the working directory, We know this exists (or will exist)
		{
			continue;
		}

		if (stripos($dir, $to) === false) // If the directory is not within the working directory, Skip it
		{
			continue;
		}

		$parent_folder = dirname($dir);
		while (!empty($parent_folder) && untrailingslashit($to) != $parent_folder && !in_array($parent_folder, $needed_dirs)) {
			$needed_dirs[] = $parent_folder;
			$parent_folder = dirname($parent_folder);
		}
	}
	asort($needed_dirs);

	// Create those directories if need be:
	foreach ($needed_dirs as $_dir) {
		// Only check to see if the Dir exists upon creation failure. Less I/O this way.
		if (!$wp_filesystem->mkdir($_dir, FS_CHMOD_DIR) && !$wp_filesystem->is_dir($_dir)) {
			return new WP_Error('mkdir_failed_ziparchive', __('Could not create directory.'), substr($_dir, strlen($to)));
		}
	}
	unset($needed_dirs);

	for ($i = 0; $i < $z->numFiles; $i++) {
		if (!$info = $z->statIndex($i)) {
			return new WP_Error('stat_failed_ziparchive', __('Could not retrieve file from archive.'));
		}

		if ('/' == substr($info['name'], -1)) // directory
		{
			continue;
		}

		if ('__MACOSX/' === substr($info['name'], 0, 9)) // Don't extract the OS X-created __MACOSX directory files
		{
			continue;
		}

		$contents = $z->getFromIndex($i);
		if (false === $contents) {
			return new WP_Error('extract_failed_ziparchive', __('Could not extract file from archive.'), $info['name']);
		}

		if (!$wp_filesystem->put_contents($to . $info['name'], $contents, FS_CHMOD_FILE)) {
			return new WP_Error('copy_failed_ziparchive', __('Could not copy file.'), $info['name']);
		}

	}

	$z->close();

	return true;
}

/**
 * This function should not be called directly, use unzip_file instead. Attempts to unzip an archive using the PclZip library.
 * Assumes that WP_Filesystem() has already been called and set up.
 *
 * @since 3.0.0
 * @see unzip_file
 * @access private
 *
 * @global WP_Filesystem_Base $wp_filesystem Subclass
 *
 * @param string $file Full path and filename of zip archive
 * @param string $to Full path on the filesystem to extract archive to
 * @param array $needed_dirs A partial list of required folders needed to be created.
 * @return mixed WP_Error on failure, True on success
 */
function _unzip_file_pclzip($file, $to, $needed_dirs = array()) {
	global $wp_filesystem;
	if (!$wp_filesystem) {
		initiate_filesystem_wptc();
		if (empty($wp_filesystem)) {
			send_response_wptc('FS_INIT_FAILED-022');
			return false;
		}
	}
	mbstring_binary_safe_encoding();

	require_once ABSPATH . BRIDGE_NAME_WPTC . '/wp-files/class-pclzip.php'; //modified

	$archive = new PclZip($file);

	$archive_files = $archive->extract(PCLZIP_OPT_EXTRACT_AS_STRING);

	reset_mbstring_encoding();

	// Is the archive valid?
	if (!is_array($archive_files)) {
		return new WP_Error('incompatible_archive', __('Incompatible Archive.'), $archive->errorInfo(true));
	}

	if (0 == count($archive_files)) {
		return new WP_Error('empty_archive_pclzip', __('Empty archive.'));
	}

	$uncompressed_size = 0;

	// Determine any children directories needed (From within the archive)
	foreach ($archive_files as $file) {
		if ('__MACOSX/' === substr($file['filename'], 0, 9)) // Skip the OS X-created __MACOSX directory
		{
			continue;
		}

		$uncompressed_size += $file['size'];

		$needed_dirs[] = $to . untrailingslashit($file['folder'] ? $file['filename'] : dirname($file['filename']));
	}

	/*
		 * disk_free_space() could return false. Assume that any falsey value is an error.
		 * A disk that has zero free bytes has bigger problems.
		 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer.
	*/
	if (defined('DOING_CRON') && DOING_CRON) {
		$available_space = @disk_free_space(WP_CONTENT_DIR);
		if ($available_space && ($uncompressed_size * 2.1) > $available_space) {
			return new WP_Error('disk_full_unzip_file', __('Could not copy files. You may have run out of disk space.'), compact('uncompressed_size', 'available_space'));
		}

	}

	$needed_dirs = array_unique($needed_dirs);
	foreach ($needed_dirs as $dir) {
		// Check the parent folders of the folders all exist within the creation array.
		if (untrailingslashit($to) == $dir) // Skip over the working directory, We know this exists (or will exist)
		{
			continue;
		}

		if (stripos($dir, $to) === false) // If the directory is not within the working directory, Skip it
		{
			continue;
		}

		$parent_folder = dirname($dir);
		while (!empty($parent_folder) && untrailingslashit($to) != $parent_folder && !in_array($parent_folder, $needed_dirs)) {
			$needed_dirs[] = $parent_folder;
			$parent_folder = dirname($parent_folder);
		}
	}
	asort($needed_dirs);

	// Create those directories if need be:
	foreach ($needed_dirs as $_dir) {
		// Only check to see if the dir exists upon creation failure. Less I/O this way.
		if (!$wp_filesystem->mkdir($_dir, FS_CHMOD_DIR) && !$wp_filesystem->is_dir($_dir)) {
			return new WP_Error('mkdir_failed_pclzip', __('Could not create directory.'), substr($_dir, strlen($to)));
		}

	}
	unset($needed_dirs);

	// Extract the files from the zip
	foreach ($archive_files as $file) {
		if ($file['folder']) {
			continue;
		}

		if ('__MACOSX/' === substr($file['filename'], 0, 9)) // Don't extract the OS X-created __MACOSX directory files
		{
			continue;
		}

		if (!$wp_filesystem->put_contents($to . $file['filename'], $file['content'], FS_CHMOD_FILE)) {
			return new WP_Error('copy_failed_pclzip', __('Could not copy file.'), $file['filename']);
		}

	}
	return true;
}

/**
 * Copies a directory from one location to another via the WordPress Filesystem Abstraction.
 * Assumes that WP_Filesystem() has already been called and setup.
 *
 * @since 2.5.0
 *
 * @global WP_Filesystem_Base $wp_filesystem Subclass
 *
 * @param string $from source directory
 * @param string $to destination directory
 * @param array $skip_list a list of files/folders to skip copying
 * @return mixed WP_Error on failure, True on success.
 */
function copy_dir($from, $to, $skip_list = array()) {
	global $wp_filesystem;
	if (!$wp_filesystem) {
		initiate_filesystem_wptc();
		if (empty($wp_filesystem)) {
			send_response_wptc('FS_INIT_FAILED-023');
			return false;
		}
	}

	$dirlist = $wp_filesystem->dirlist($from);

	$from = trailingslashit($from);
	$to = trailingslashit($to);

	foreach ((array) $dirlist as $filename => $fileinfo) {
		if (in_array($filename, $skip_list)) {
			continue;
		}

		if ('f' == $fileinfo['type']) {
			if (!$wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE)) {
				// If copy failed, chmod file to 0644 and try again.
				$wp_filesystem->chmod($to . $filename, FS_CHMOD_FILE);
				if (!$wp_filesystem->copy($from . $filename, $to . $filename, true, FS_CHMOD_FILE)) {
					return new WP_Error('copy_failed_copy_dir', __('Could not copy file.'), $to . $filename);
				}

			}
		} elseif ('d' == $fileinfo['type']) {
			if (!$wp_filesystem->is_dir($to . $filename)) {
				if (!$wp_filesystem->mkdir($to . $filename, FS_CHMOD_DIR)) {
					return new WP_Error('mkdir_failed_copy_dir', __('Could not create directory.'), $to . $filename);
				}

			}

			// generate the $sub_skip_list for the subdirectory as a sub-set of the existing $skip_list
			$sub_skip_list = array();
			foreach ($skip_list as $skip_item) {
				if (0 === stripos($skip_item, $filename . '/')) {
					$sub_skip_list[] = preg_replace('!^' . preg_quote($filename, '!') . '/!i', '', $skip_item);
				}

			}

			$result = copy_dir($from . $filename, $to . $filename, $sub_skip_list);
			if (is_wp_error($result)) {
				return $result;
			}

		}
	}
	return true;
}

/**
 * Initialises and connects the WordPress Filesystem Abstraction classes.
 * This function will include the chosen transport and attempt connecting.
 *
 * Plugins may add extra transports, And force WordPress to use them by returning
 * the filename via the {@see 'filesystem_method_file'} filter.
 *
 * @since 2.5.0
 *
 * @global WP_Filesystem_Base $wp_filesystem Subclass
 *
 * @param array|false  $args                         Optional. Connection args, These are passed directly to
 *                                                   the `WP_Filesystem_*()` classes. Default false.
 * @param string|false $context                      Optional. Context for get_filesystem_method(). Default false.
 * @param bool         $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. Default false.
 * @return null|bool false on failure, true on success.
 */
function WP_Filesystem($args = false, $context = false, $allow_relaxed_file_ownership = false) {
	global $wp_filesystem;

	//require_once ABSPATH . BRIDGE_NAME_WPTC . '/wp-files/class-wp-filesystem-base.php'; //modified

	$method = get_filesystem_method($args, $context, $allow_relaxed_file_ownership);

	if (!$method) {
		return false;
	}

	if (!class_exists("WP_Filesystem_$method")) {

		/**
		 * Filter the path for a specific filesystem method class file.
		 *
		 * @since 2.6.0
		 *
		 * @see get_filesystem_method()
		 *
		 * @param string $path   Path to the specific filesystem method class file.
		 * @param string $method The filesystem method to use.
		 */
		$abstraction_file = apply_filters('filesystem_method_file', ABSPATH . BRIDGE_NAME_WPTC . '/wp-files/class-wp-filesystem-' . $method . '.php', $method); //modified

		if (!file_exists($abstraction_file)) {
			return;
		}

		require_once $abstraction_file;
	}
	$method = "WP_Filesystem_$method";

	$wp_filesystem = new $method($args);

	//Define the timeouts for the connections. Only available after the construct is called to allow for per-transport overriding of the default.
	if (!defined('FS_CONNECT_TIMEOUT')) {
		define('FS_CONNECT_TIMEOUT', 30);
	}

	if (!defined('FS_TIMEOUT')) {
		define('FS_TIMEOUT', 30);
	}

	if (is_wp_error($wp_filesystem->errors) && $wp_filesystem->errors->get_error_code()) {
		return false;
	}

	if (!$wp_filesystem->connect()) {
		return false;
	}
	//There was an error connecting to the server.

	// Set the permission constants if not already set.
	if (!defined('FS_CHMOD_DIR')) {
		define('FS_CHMOD_DIR', (fileperms(ABSPATH) & 0777 | 0755));
	}

	if (!defined('FS_CHMOD_FILE')) {
		if( file_exists(ABSPATH . 'index.php') ){
			define('FS_CHMOD_FILE', (fileperms(ABSPATH . 'index.php') & 0777 | 0644));
		} else {
			define('FS_CHMOD_FILE', 0644);
		}
	}

	return true;
}

/**
 * Determines which method to use for reading, writing, modifying, or deleting
 * files on the filesystem.
 *
 * The priority of the transports are: Direct, SSH2, FTP PHP Extension, FTP Sockets
 * (Via Sockets class, or `fsockopen()`). Valid values for these are: 'direct', 'ssh2',
 * 'ftpext' or 'ftpsockets'.
 *
 * The return value can be overridden by defining the `FS_METHOD` constant in `wp-config.php`,
 * or filtering via {@see 'filesystem_method'}.
 *
 * @link https://codex.wordpress.org/Editing_wp-config.php#WordPress_Upgrade_Constants
 *
 * Plugins may define a custom transport handler, See WP_Filesystem().
 *
 * @since 2.5.0
 *
 * @global callable $_wp_filesystem_direct_method
 *
 * @param array  $args                         Optional. Connection details. Default empty array.
 * @param string $context                      Optional. Full path to the directory that is tested
 *                                             for being writable. Default false.
 * @param bool   $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable.
 *                                             Default false.
 * @return string The transport to use, see description for valid return values.
 */
function get_filesystem_method($args = array(), $context = false, $allow_relaxed_file_ownership = false) {
	$method = defined('FS_METHOD') ? FS_METHOD : false; // Please ensure that this is either 'direct', 'ssh2', 'ftpext' or 'ftpsockets'

	if (!$context) {
		$context = WP_CONTENT_DIR;
	}

	// If the directory doesn't exist (wp-content/languages) then use the parent directory as we'll create it.
	if (WP_LANG_DIR == $context && !is_dir($context)) {
		$context = dirname($context);
	}

	$context = trailingslashit($context);

	if (!$method) {

		$temp_file_name = $context . 'temp-write-test-' . time();
		$temp_handle = @fopen($temp_file_name, 'w');
		if ($temp_handle) {

			// Attempt to determine the file owner of the WordPress files, and that of newly created files
			$wp_file_owner = $temp_file_owner = false;
			if (function_exists('fileowner')) {
				$wp_file_owner = @fileowner(__FILE__);
				$temp_file_owner = @fileowner($temp_file_name);
			}

			if ($wp_file_owner !== false && $wp_file_owner === $temp_file_owner) {
				// WordPress is creating files as the same owner as the WordPress files,
				// this means it's safe to modify & create new files via PHP.
				$method = 'direct';
				$GLOBALS['_wp_filesystem_direct_method'] = 'file_owner';
			} elseif ($allow_relaxed_file_ownership) {
				// The $context directory is writable, and $allow_relaxed_file_ownership is set, this means we can modify files
				// safely in this directory. This mode doesn't create new files, only alter existing ones.
				$method = 'direct';
				$GLOBALS['_wp_filesystem_direct_method'] = 'relaxed_ownership';
			}

			@fclose($temp_handle);
			@unlink($temp_file_name);
		}
	}

	if (!$method && isset($args['connection_type']) && 'ssh' == $args['connection_type'] && extension_loaded('ssh2') && function_exists('stream_get_contents')) {
		$method = 'ssh2';
	}

	if (!$method && extension_loaded('ftp')) {
		$method = 'ftpext';
	}

	if (!$method && (extension_loaded('sockets') || function_exists('fsockopen'))) {
		$method = 'ftpsockets';
	}
	//Sockets: Socket extension; PHP Mode: FSockopen / fwrite / fread

	/**
	 * Filter the filesystem method to use.
	 *
	 * @since 2.6.0
	 *
	 * @param string $method  Filesystem method to return.
	 * @param array  $args    An array of connection details for the method.
	 * @param string $context Full path to the directory that is tested for being writable.
	 * @param bool   $allow_relaxed_file_ownership Whether to allow Group/World writable.
	 */
	return apply_filters('filesystem_method', $method, $args, $context, $allow_relaxed_file_ownership);
}

/**
 * Displays a form to the user to request for their FTP/SSH details in order
 * to connect to the filesystem.
 *
 * All chosen/entered details are saved, Excluding the Password.
 *
 * Hostnames may be in the form of hostname:portnumber (eg: wordpress.org:2467)
 * to specify an alternate FTP/SSH port.
 *
 * Plugins may override this form by returning true|false via the
 * {@see 'request_filesystem_credentials'} filter.
 *
 * @since 2.5.
 *
 * @todo Properly mark optional arguments as such
 *
 * @global string $pagenow
 *
 * @param string $form_post    the URL to post the form to
 * @param string $type         the chosen Filesystem method in use
 * @param bool   $error        if the current request has failed to connect
 * @param string $context      The directory which is needed access to, The write-test will be performed on this directory by get_filesystem_method()
 * @param array  $extra_fields Extra POST fields which should be checked for to be included in the post.
 * @param bool   $allow_relaxed_file_ownership Whether to allow Group/World writable.
 * @return bool False on failure. True on success.
 */
function request_filesystem_credentials($form_post, $type = '', $error = false, $context = false, $extra_fields = null, $allow_relaxed_file_ownership = false) {
	global $pagenow;

	/**
	 * Filter the filesystem credentials form output.
	 *
	 * Returning anything other than an empty string will effectively short-circuit
	 * output of the filesystem credentials form, returning that value instead.
	 *
	 * @since 2.5.0
	 *
	 * @param mixed  $output       Form output to return instead. Default empty.
	 * @param string $form_post    URL to POST the form to.
	 * @param string $type         Chosen type of filesystem.
	 * @param bool   $error        Whether the current request has failed to connect.
	 *                             Default false.
	 * @param string $context      Full path to the directory that is tested for
	 *                             being writable.
	 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable.
	 * @param array  $extra_fields Extra POST fields.
	 */
	$req_cred = apply_filters('request_filesystem_credentials', '', $form_post, $type, $error, $context, $extra_fields, $allow_relaxed_file_ownership);
	if ('' !== $req_cred) {
		return $req_cred;
	}

	if (empty($type)) {
		$type = get_filesystem_method(array(), $context, $allow_relaxed_file_ownership);
	}

	if ('direct' == $type) {
		return true;
	}

	if (is_null($extra_fields)) {
		$extra_fields = array('version', 'locale');
	}

	$credentials = get_option('ftp_credentials', array('hostname' => '', 'username' => ''));

	// If defined, set it to that, Else, If POST'd, set it to that, If not, Set it to whatever it previously was(saved details in option)
	$credentials['hostname'] = defined('FTP_HOST') ? FTP_HOST : (!empty($_POST['hostname']) ? wp_unslash($_POST['hostname']) : $credentials['hostname']);
	$credentials['username'] = defined('FTP_USER') ? FTP_USER : (!empty($_POST['username']) ? wp_unslash($_POST['username']) : $credentials['username']);
	$credentials['password'] = defined('FTP_PASS') ? FTP_PASS : (!empty($_POST['password']) ? wp_unslash($_POST['password']) : '');

	// Check to see if we are setting the public/private keys for ssh
	$credentials['public_key'] = defined('FTP_PUBKEY') ? FTP_PUBKEY : (!empty($_POST['public_key']) ? wp_unslash($_POST['public_key']) : '');
	$credentials['private_key'] = defined('FTP_PRIKEY') ? FTP_PRIKEY : (!empty($_POST['private_key']) ? wp_unslash($_POST['private_key']) : '');

	// Sanitize the hostname, Some people might pass in odd-data:
	$credentials['hostname'] = preg_replace('|\w+://|', '', $credentials['hostname']); //Strip any schemes off

	if (strpos($credentials['hostname'], ':')) {
		list($credentials['hostname'], $credentials['port']) = explode(':', $credentials['hostname'], 2);
		if (!is_numeric($credentials['port'])) {
			unset($credentials['port']);
		}

	} else {
		unset($credentials['port']);
	}

	if ((defined('FTP_SSH') && FTP_SSH) || (defined('FS_METHOD') && 'ssh2' == FS_METHOD)) {
		$credentials['connection_type'] = 'ssh';
	} elseif ((defined('FTP_SSL') && FTP_SSL) && 'ftpext' == $type) {
		//Only the FTP Extension understands SSL
		$credentials['connection_type'] = 'ftps';
	} elseif (!empty($_POST['connection_type'])) {
		$credentials['connection_type'] = wp_unslash($_POST['connection_type']);
	} elseif (!isset($credentials['connection_type'])) {
		//All else fails (And it's not defaulted to something else saved), Default to FTP
		$credentials['connection_type'] = 'ftp';
	}
	if (!$error &&
		(
			(!empty($credentials['password']) && !empty($credentials['username']) && !empty($credentials['hostname'])) ||
			('ssh' == $credentials['connection_type'] && !empty($credentials['public_key']) && !empty($credentials['private_key']))
		)) {
		$stored_credentials = $credentials;
		if (!empty($stored_credentials['port'])) //save port as part of hostname to simplify above code.
		{
			$stored_credentials['hostname'] .= ':' . $stored_credentials['port'];
		}

		unset($stored_credentials['password'], $stored_credentials['port'], $stored_credentials['private_key'], $stored_credentials['public_key']);
		if (!wp_installing()) {
			update_option('ftp_credentials', $stored_credentials);
		}
		return $credentials;
	}
	$hostname = isset($credentials['hostname']) ? $credentials['hostname'] : '';
	$username = isset($credentials['username']) ? $credentials['username'] : '';
	$public_key = isset($credentials['public_key']) ? $credentials['public_key'] : '';
	$private_key = isset($credentials['private_key']) ? $credentials['private_key'] : '';
	$port = isset($credentials['port']) ? $credentials['port'] : '';
	$connection_type = isset($credentials['connection_type']) ? $credentials['connection_type'] : '';

	if ($error) {
		$error_string = __('<strong>ERROR:</strong> There was an error connecting to the server, Please verify the settings are correct.');
		if (is_wp_error($error)) {
			$error_string = esc_html($error->get_error_message());
		}

		echo '<div id="message" class="error"><p>' . $error_string . '</p></div>';
	}

	$types = array();
	if (extension_loaded('ftp') || extension_loaded('sockets') || function_exists('fsockopen')) {
		$types['ftp'] = __('FTP');
	}

	if (extension_loaded('ftp')) //Only this supports FTPS
	{
		$types['ftps'] = __('FTPS (SSL)');
	}

	if (extension_loaded('ssh2') && function_exists('stream_get_contents')) {
		$types['ssh'] = __('SSH2');
	}

	/**
	 * Filter the connection types to output to the filesystem credentials form.
	 *
	 * @since 2.9.0
	 *
	 * @param array  $types       Types of connections.
	 * @param array  $credentials Credentials to connect with.
	 * @param string $type        Chosen filesystem method.
	 * @param object $error       Error object.
	 * @param string $context     Full path to the directory that is tested
	 *                            for being writable.
	 */
	$types = apply_filters('fs_ftp_connection_types', $types, $credentials, $type, $error, $context);

	?>
<script type="text/javascript">
<!--
jQuery(function($){
	jQuery("#ssh").click(function () {
		jQuery("#ssh_keys").show();
	});
	jQuery("#ftp, #ftps").click(function () {
		jQuery("#ssh_keys").hide();
	});
	jQuery('#request-filesystem-credentials-form input[value=""]:first').focus();
});
-->
</script>
<form action="<?php echo $form_post; ?>" method="post">
<div id="request-filesystem-credentials-form" class="request-filesystem-credentials-form">
<?php
// Print a H1 heading in the FTP credentials modal dialog, default is a H2.
	$heading_tag = 'h2';
	if ('plugins.php' === $pagenow || 'plugin-install.php' === $pagenow) {
		$heading_tag = 'h1';
	}
	echo "<$heading_tag id='request-filesystem-credentials-title'>" . __('Connection Information') . "</$heading_tag>";
	?>
<p id="request-filesystem-credentials-desc"><?php
$label_user = __('Username');
	$label_pass = __('Password');
	_e('To perform the requested action, WordPress needs to access your web server.');
	echo ' ';
	if ((isset($types['ftp']) || isset($types['ftps']))) {
		if (isset($types['ssh'])) {
			_e('Please enter your FTP or SSH credentials to proceed.');
			$label_user = __('FTP/SSH Username');
			$label_pass = __('FTP/SSH Password');
		} else {
			_e('Please enter your FTP credentials to proceed.');
			$label_user = __('FTP Username');
			$label_pass = __('FTP Password');
		}
		echo ' ';
	}
	_e('If you do not remember your credentials, you should contact your web host.');
	?></p>
<label for="hostname">
	<span class="field-title"><?php _e('Hostname')?></span>
	<input name="hostname" type="text" id="hostname" aria-describedby="request-filesystem-credentials-desc" class="code" placeholder="<?php esc_attr_e('example: www.wordpress.org')?>" value="<?php echo esc_attr($hostname);if (!empty($port)) {
		echo ":$port";
	}
	?>"<?php disabled(defined('FTP_HOST'));?> />
</label>
<div class="ftp-username">
	<label for="username">
		<span class="field-title"><?php echo $label_user; ?></span>
		<input name="username" type="text" id="username" value="<?php echo esc_attr($username) ?>"<?php disabled(defined('FTP_USER'));?> />
	</label>
</div>
<div class="ftp-password">
	<label for="password">
		<span class="field-title"><?php echo $label_pass; ?></span>
		<input name="password" type="password" id="password" value="<?php if (defined('FTP_PASS')) {
		echo '*****';
	}
	?>"<?php disabled(defined('FTP_PASS'));?> />
		<em><?php if (!defined('FTP_PASS')) {
		_e('This password will not be stored on the server.');
	}
	?></em>
	</label>
</div>
<?php if (isset($types['ssh'])): ?>
<fieldset>
<legend><?php _e('Authentication Keys');?></legend>
<label for="public_key">
	<span class="field-title"><?php _e('Public Key:')?></span>
	<input name="public_key" type="text" id="public_key" aria-describedby="auth-keys-desc" value="<?php echo esc_attr($public_key) ?>"<?php disabled(defined('FTP_PUBKEY'));?> />
</label>
<label for="private_key">
	<span class="field-title"><?php _e('Private Key:')?></span>
	<input name="private_key" type="text" id="private_key" value="<?php echo esc_attr($private_key) ?>"<?php disabled(defined('FTP_PRIKEY'));?> />
</label>
</fieldset>
<span id="auth-keys-desc"><?php _e('Enter the location on the server where the public and private keys are located. If a passphrase is needed, enter that in the password field above.')?></span>
<?php endif;?>
<fieldset>
<legend><?php _e('Connection Type');?></legend>
<?php
$disabled = disabled((defined('FTP_SSL') && FTP_SSL) || (defined('FTP_SSH') && FTP_SSH), true, false);
	foreach ($types as $name => $text): ?>
	<label for="<?php echo esc_attr($name) ?>">
		<input type="radio" name="connection_type" id="<?php echo esc_attr($name) ?>" value="<?php echo esc_attr($name) ?>"<?php checked($name, $connection_type);
	echo $disabled;?> />
		<?php echo $text ?>
	</label>
	<?php endforeach;?>
</fieldset>
<?php
foreach ((array) $extra_fields as $field) {
		if (isset($_POST[$field])) {
			echo '<input type="hidden" name="' . esc_attr($field) . '" value="' . esc_attr(wp_unslash($_POST[$field])) . '" />';
		}

	}
	?>
	<p class="request-filesystem-credentials-action-buttons">
		<button class="button cancel-button" data-js-action="close" type="button"><?php _e('Cancel');?></button>
		<?php submit_button(__('Proceed'), 'button', 'upgrade', false);?>
	</p>
</div>
</form>
<?php
return false;
}

/**
 * Print the filesystem credentials modal when needed.
 *
 * @since 4.2.0
 */
function wp_print_request_filesystem_credentials_modal() {
	$filesystem_method = get_filesystem_method();
	ob_start();
	$filesystem_credentials_are_stored = request_filesystem_credentials(self_admin_url());
	ob_end_clean();
	$request_filesystem_credentials = ($filesystem_method != 'direct' && !$filesystem_credentials_are_stored);
	if (!$request_filesystem_credentials) {
		return;
	}
	?>
	<div id="request-filesystem-credentials-dialog" class="notification-dialog-wrap request-filesystem-credentials-dialog">
		<div class="notification-dialog-background"></div>
		<div class="notification-dialog" role="dialog" aria-labelledby="request-filesystem-credentials-title" tabindex="0">
			<div class="request-filesystem-credentials-dialog-content">
				<?php request_filesystem_credentials(home_url());?>
			</div>
		</div>
	</div>
	<?php
}
