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<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014 - 2018, British Columbia Institute of Technology * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/) * @copyright Copyright (c) 2014 - 2018, British Columbia Institute of Technology (http://bcit.ca/) * @license http://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 1.0.0 * @filesource */ defined('BASEPATH') OR exit('No direct script access allowed'); /** * CodeIgniter File Helpers * * @package CodeIgniter * @subpackage Helpers * @category Helpers * @author EllisLab Dev Team * @link https://codeigniter.com/user_guide/helpers/file_helper.html */ // ------------------------------------------------------------------------ if ( ! function_exists('read_file')) { /** * Read File * * Opens the file specified in the path and returns it as a string. * * @todo Remove in version 3.1+. * @deprecated 3.0.0 It is now just an alias for PHP's native file_get_contents(). * @param string $file Path to file * @return string File contents */ function read_file($file) { return @file_get_contents($file); } } // ------------------------------------------------------------------------ if ( ! function_exists('write_file')) { /** * Write File * * Writes data to the file specified in the path. * Creates a new file if non-existent. * * @param string $path File path * @param string $data Data to write * @param string $mode fopen() mode (default: 'wb') * @return bool */ function write_file($path, $data, $mode = 'wb') { if ( ! $fp = @fopen($path, $mode)) { return FALSE; } flock($fp, LOCK_EX); for ($result = $written = 0, $length = strlen($data); $written < $length; $written += $result) { if (($result = fwrite($fp, substr($data, $written))) === FALSE) { break; } } flock($fp, LOCK_UN); fclose($fp); return is_int($result); } } // ------------------------------------------------------------------------ if ( ! function_exists('delete_files')) { /** * Delete Files * * Deletes all files contained in the supplied directory path. * Files must be writable or owned by the system in order to be deleted. * If the second parameter is set to TRUE, any directories contained * within the supplied base directory will be nuked as well. * * @param string $path File path * @param bool $del_dir Whether to delete any directories found in the path * @param bool $htdocs Whether to skip deleting .htaccess and index page files * @param int $_level Current directory depth level (default: 0; internal use only) * @return bool */ function delete_files($path, $del_dir = FALSE, $htdocs = FALSE, $_level = 0) { // Trim the trailing slash $path = rtrim($path, '/\\'); if ( ! $current_dir = @opendir($path)) { return FALSE; } while (FALSE !== ($filename = @readdir($current_dir))) { if ($filename !== '.' && $filename !== '..') { $filepath = $path.DIRECTORY_SEPARATOR.$filename; if (is_dir($filepath) && $filename[0] !== '.' && ! is_link($filepath)) { delete_files($filepath, $del_dir, $htdocs, $_level + 1); } elseif ($htdocs !== TRUE OR ! preg_match('/^(\.htaccess|index\.(html|htm|php)|web\.config)$/i', $filename)) { @unlink($filepath); } } } closedir($current_dir); return ($del_dir === TRUE && $_level > 0) ? @rmdir($path) : TRUE; } } // ------------------------------------------------------------------------ if ( ! function_exists('get_filenames')) { /** * Get Filenames * * Reads the specified directory and builds an array containing the filenames. * Any sub-folders contained within the specified path are read as well. * * @param string path to source * @param bool whether to include the path as part of the filename * @param bool internal variable to determine recursion status - do not use in calls * @return array */ function get_filenames($source_dir, $include_path = FALSE, $_recursion = FALSE) { static $_filedata = array(); if ($fp = @opendir($source_dir)) { // reset the array and make sure $source_dir has a trailing slash on the initial call if ($_recursion === FALSE) { $_filedata = array(); $source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR; } while (FALSE !== ($file = readdir($fp))) { if (is_dir($source_dir.$file) && $file[0] !== '.') { get_filenames($source_dir.$file.DIRECTORY_SEPARATOR, $include_path, TRUE); } elseif ($file[0] !== '.') { $_filedata[] = ($include_path === TRUE) ? $source_dir.$file : $file; } } closedir($fp); return $_filedata; } return FALSE; } } // -------------------------------------------------------------------- if ( ! function_exists('get_dir_file_info')) { /** * Get Directory File Information * * Reads the specified directory and builds an array containing the filenames, * filesize, dates, and permissions * * Any sub-folders contained within the specified path are read as well. * * @param string path to source * @param bool Look only at the top level directory specified? * @param bool internal variable to determine recursion status - do not use in calls * @return array */ function get_dir_file_info($source_dir, $top_level_only = TRUE, $_recursion = FALSE) { static $_filedata = array(); $relative_path = $source_dir; if ($fp = @opendir($source_dir)) { // reset the array and make sure $source_dir has a trailing slash on the initial call if ($_recursion === FALSE) { $_filedata = array(); $source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR; } // Used to be foreach (scandir($source_dir, 1) as $file), but scandir() is simply not as fast while (FALSE !== ($file = readdir($fp))) { if (is_dir($source_dir.$file) && $file[0] !== '.' && $top_level_only === FALSE) { get_dir_file_info($source_dir.$file.DIRECTORY_SEPARATOR, $top_level_only, TRUE); } elseif ($file[0] !== '.') { $_filedata[$file] = get_file_info($source_dir.$file); $_filedata[$file]['relative_path'] = $relative_path; } } closedir($fp); return $_filedata; } return FALSE; } } // -------------------------------------------------------------------- if ( ! function_exists('get_file_info')) { /** * Get File Info * * Given a file and path, returns the name, path, size, date modified * Second parameter allows you to explicitly declare what information you want returned * Options are: name, server_path, size, date, readable, writable, executable, fileperms * Returns FALSE if the file cannot be found. * * @param string path to file * @param mixed array or comma separated string of information returned * @return array */ function get_file_info($file, $returned_values = array('name', 'server_path', 'size', 'date')) { if ( ! file_exists($file)) { return FALSE; } if (is_string($returned_values)) { $returned_values = explode(',', $returned_values); } foreach ($returned_values as $key) { switch ($key) { case 'name': $fileinfo['name'] = basename($file); break; case 'server_path': $fileinfo['server_path'] = $file; break; case 'size': $fileinfo['size'] = filesize($file); break; case 'date': $fileinfo['date'] = filemtime($file); break; case 'readable': $fileinfo['readable'] = is_readable($file); break; case 'writable': $fileinfo['writable'] = is_really_writable($file); break; case 'executable': $fileinfo['executable'] = is_executable($file); break; case 'fileperms': $fileinfo['fileperms'] = fileperms($file); break; } } return $fileinfo; } } // -------------------------------------------------------------------- if ( ! function_exists('get_mime_by_extension')) { /** * Get Mime by Extension * * Translates a file extension into a mime type based on config/mimes.php. * Returns FALSE if it can't determine the type, or open the mime config file * * Note: this is NOT an accurate way of determining file mime types, and is here strictly as a convenience * It should NOT be trusted, and should certainly NOT be used for security * * @param string $filename File name * @return string */ function get_mime_by_extension($filename) { static $mimes; if ( ! is_array($mimes)) { $mimes = get_mimes(); if (empty($mimes)) { return FALSE; } } $extension = strtolower(substr(strrchr($filename, '.'), 1)); if (isset($mimes[$extension])) { return is_array($mimes[$extension]) ? current($mimes[$extension]) // Multiple mime types, just give the first one : $mimes[$extension]; } return FALSE; } } // -------------------------------------------------------------------- if ( ! function_exists('symbolic_permissions')) { /** * Symbolic Permissions * * Takes a numeric value representing a file's permissions and returns * standard symbolic notation representing that value * * @param int $perms Permissions * @return string */ function symbolic_permissions($perms) { if (($perms & 0xC000) === 0xC000) { $symbolic = 's'; // Socket } elseif (($perms & 0xA000) === 0xA000) { $symbolic = 'l'; // Symbolic Link } elseif (($perms & 0x8000) === 0x8000) { $symbolic = '-'; // Regular } elseif (($perms & 0x6000) === 0x6000) { $symbolic = 'b'; // Block special } elseif (($perms & 0x4000) === 0x4000) { $symbolic = 'd'; // Directory } elseif (($perms & 0x2000) === 0x2000) { $symbolic = 'c'; // Character special } elseif (($perms & 0x1000) === 0x1000) { $symbolic = 'p'; // FIFO pipe } else { $symbolic = 'u'; // Unknown } // Owner $symbolic .= (($perms & 0x0100) ? 'r' : '-') .(($perms & 0x0080) ? 'w' : '-') .(($perms & 0x0040) ? (($perms & 0x0800) ? 's' : 'x' ) : (($perms & 0x0800) ? 'S' : '-')); // Group $symbolic .= (($perms & 0x0020) ? 'r' : '-') .(($perms & 0x0010) ? 'w' : '-') .(($perms & 0x0008) ? (($perms & 0x0400) ? 's' : 'x' ) : (($perms & 0x0400) ? 'S' : '-')); // World $symbolic .= (($perms & 0x0004) ? 'r' : '-') .(($perms & 0x0002) ? 'w' : '-') .(($perms & 0x0001) ? (($perms & 0x0200) ? 't' : 'x' ) : (($perms & 0x0200) ? 'T' : '-')); return $symbolic; } } // -------------------------------------------------------------------- if ( ! function_exists('octal_permissions')) { /** * Octal Permissions * * Takes a numeric value representing a file's permissions and returns * a three character string representing the file's octal permissions * * @param int $perms Permissions * @return string */ function octal_permissions($perms) { return substr(sprintf('%o', $perms), -3); } }