<?php

/////////////////////////////////////////////////////////////////

/// getID3() by James Heinrich <info@getid3.org>               //

//                                                             //

// Please see readme.txt for more information                  //

//                                                            ///

/////////////////////////////////////////////////////////////////

// define a constant rather than looking up every time it is needed

if (!defined('GETID3_OS_ISWINDOWS')) {

	define('GETID3_OS_ISWINDOWS', (stripos(PHP_OS, 'WIN') === 0));

}

// Get base path of getID3() - ONCE

if (!defined('GETID3_INCLUDEPATH')) {

	define('GETID3_INCLUDEPATH', dirname(__FILE__).DIRECTORY_SEPARATOR);

}

// Workaround Bug #39923 (https://bugs.php.net/bug.php?id=39923)

if (!defined('IMG_JPG') && defined('IMAGETYPE_JPEG')) {

	define('IMG_JPG', IMAGETYPE_JPEG);

}

if (!defined('ENT_SUBSTITUTE')) { // PHP5.3 adds ENT_IGNORE, PHP5.4 adds ENT_SUBSTITUTE

	define('ENT_SUBSTITUTE', (defined('ENT_IGNORE') ? ENT_IGNORE : 8));

}

// attempt to define temp dir as something flexible but reliable

$temp_dir = ini_get('upload_tmp_dir');

if ($temp_dir && (!is_dir($temp_dir) || !is_readable($temp_dir))) {

	$temp_dir = '';

}

if (!$temp_dir && function_exists('sys_get_temp_dir')) { // sys_get_temp_dir added in PHP v5.2.1

	// sys_get_temp_dir() may give inaccessible temp dir, e.g. with open_basedir on virtual hosts

	$temp_dir = sys_get_temp_dir();

}

$temp_dir = @realpath($temp_dir); // see https://github.com/JamesHeinrich/getID3/pull/10

$open_basedir = ini_get('open_basedir');

if ($open_basedir) {

	// e.g. "/var/www/vhosts/getid3.org/httpdocs/:/tmp/"

	$temp_dir     = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $temp_dir);

	$open_basedir = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $open_basedir);

	if (substr($temp_dir, -1, 1) != DIRECTORY_SEPARATOR) {

		$temp_dir .= DIRECTORY_SEPARATOR;

	}

	$found_valid_tempdir = false;

	$open_basedirs = explode(PATH_SEPARATOR, $open_basedir);

	foreach ($open_basedirs as $basedir) {

		if (substr($basedir, -1, 1) != DIRECTORY_SEPARATOR) {

			$basedir .= DIRECTORY_SEPARATOR;

		}

		if (preg_match('#^'.preg_quote($basedir).'#', $temp_dir)) {

			$found_valid_tempdir = true;

			break;

		}

	}

	if (!$found_valid_tempdir) {

		$temp_dir = '';

	}

	unset($open_basedirs, $found_valid_tempdir, $basedir);

}

if (!$temp_dir) {

	$temp_dir = '*'; // invalid directory name should force tempnam() to use system default temp dir

}

// $temp_dir = '/something/else/';  // feel free to override temp dir here if it works better for your system

if (!defined('GETID3_TEMP_DIR')) {

	define('GETID3_TEMP_DIR', $temp_dir);

}

unset($open_basedir, $temp_dir);

// End: Defines

class getID3

{

	public $option_fread_buffer_size = 32768;

	// Public variables

	public $tempdir = GETID3_TEMP_DIR;

	public $memory_limit = 0;

	protected $startup_error   = '';

	protected $startup_warning = '';

	const FREAD_BUFFER_SIZE = 32768;

	const ATTACHMENTS_NONE   = false;

	const ATTACHMENTS_INLINE = true;

	public function __construct() {

		// Check memory

			// could be stored as "16M" rather than 16777216 for example

			// could be stored as "2G" rather than 2147483648 for example

		}

		if ($this->memory_limit <= 0) {

			// memory limits probably disabled

		} elseif ($this->memory_limit <= 4194304) {

			$this->startup_error .= 'PHP has less than 4MB available memory and will very likely run out. Increase memory_limit in php.ini'."\n";

		} elseif ($this->memory_limit <= 12582912) {

			$this->startup_warning .= 'PHP has less than 12MB available memory and might run out if all modules are loaded. Increase memory_limit in php.ini'."\n";

		}

		// Check safe_mode off

			$this->warning('WARNING: Safe mode is on, shorten support disabled, md5data/sha1data for ogg vorbis disabled, ogg vorbos/flac tag writing disabled.');

		}

			// http://php.net/manual/en/mbstring.overload.php

			// "mbstring.func_overload in php.ini is a positive value that represents a combination of bitmasks specifying the categories of functions to be overloaded. It should be set to 1 to overload the mail() function. 2 for string functions, 4 for regular expression functions"

			// getID3 cannot run when string functions are overloaded. It doesn't matter if mail() or ereg* functions are overloaded since getID3 does not use those.

			$this->startup_error .= 'WARNING: php.ini contains "mbstring.func_overload = '.ini_get('mbstring.func_overload').'", getID3 cannot run with this setting (bitmask 2 (string functions) cannot be set). Recommended to disable entirely.'."\n";

		}

			}

			}

		}

		// Load support library

		if (!include_once(GETID3_INCLUDEPATH.'getid3.lib.php')) {

			$this->startup_error .= 'getid3.lib.php is missing or corrupt'."\n";

		}

		if ($this->option_max_2gb_check === null) {

			$this->option_max_2gb_check = (PHP_INT_MAX <= 2147483647);

		}

		// Needed for Windows only:

		// Define locations of helper applications for Shorten, VorbisComment, MetaFLAC

		// This path cannot contain spaces, but the below code will attempt to get the

		//   8.3-equivalent path automatically

		// IMPORTANT: This path must include the trailing slash

		if (GETID3_OS_ISWINDOWS && !defined('GETID3_HELPERAPPSDIR')) {

			$helperappsdir = GETID3_INCLUDEPATH.'..'.DIRECTORY_SEPARATOR.'helperapps'; // must not have any space in this path

			if (!is_dir($helperappsdir)) {

				$this->startup_warning .= '"'.$helperappsdir.'" cannot be defined as GETID3_HELPERAPPSDIR because it does not exist'."\n";

			} elseif (strpos(realpath($helperappsdir), ' ') !== false) {

				$DirPieces = explode(DIRECTORY_SEPARATOR, realpath($helperappsdir));

				$path_so_far = array();

				foreach ($DirPieces as $key => $value) {

					if (strpos($value, ' ') !== false) {

						if (!empty($path_so_far)) {

							$commandline = 'dir /x '.escapeshellarg(implode(DIRECTORY_SEPARATOR, $path_so_far));

							$dir_listing = `$commandline`;

							$lines = explode("\n", $dir_listing);

							foreach ($lines as $line) {

								$line = trim($line);

								if (preg_match('#^([0-9/]{10}) +([0-9:]{4,5}( [AP]M)?) +(<DIR>|[0-9,]+) +([^ ]{0,11}) +(.+)$#', $line, $matches)) {

									list($dummy, $date, $time, $ampm, $filesize, $shortname, $filename) = $matches;

									if ((strtoupper($filesize) == '<DIR>') && (strtolower($filename) == strtolower($value))) {

										$value = $shortname;

									}

								}

							}

						} else {

							$this->startup_warning .= 'GETID3_HELPERAPPSDIR must not have any spaces in it - use 8dot3 naming convention if neccesary. You can run "dir /x" from the commandline to see the correct 8.3-style names.'."\n";

						}

					}

					$path_so_far[] = $value;

				}

				$helperappsdir = implode(DIRECTORY_SEPARATOR, $path_so_far);

			}

			define('GETID3_HELPERAPPSDIR', $helperappsdir.DIRECTORY_SEPARATOR);

		}

		if (!empty($this->startup_error)) {

			echo $this->startup_error;

			throw new getid3_exception($this->startup_error);

		}

	}

	public function version() {

		return self::VERSION;

	}

	public function fread_buffer_size() {

		return $this->option_fread_buffer_size;

	}

	public function setOption($optArray) {

		if (!is_array($optArray) || empty($optArray)) {

			return false;

		}

		foreach ($optArray as $opt => $val) {

			if (isset($this->$opt) === false) {

				continue;

			}

			$this->$opt = $val;

		}

		return true;

	}