libs/internals/core.create_dir_structure.php

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<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */

/**
 * create full directory structure
 *
 * @param string $dir
 */

// $dir

function smarty_core_create_dir_structure($params, &$smarty)
{
    if (!file_exists($params['dir'])) {
        $_open_basedir_ini = ini_get('open_basedir');

        if (DIRECTORY_SEPARATOR=='/') {
            /* unix-style paths */
            $_dir = $params['dir'];
            $_dir_parts = preg_split('!/+!', $_dir, -1, PREG_SPLIT_NO_EMPTY);
            $_new_dir = (substr($_dir, 0, 1)=='/') ? '/' : getcwd().'/';
            if($_use_open_basedir = !empty($_open_basedir_ini)) {
                $_open_basedirs = explode(':', $_open_basedir_ini);
            }

        } else {
            /* other-style paths */
            $_dir = str_replace('\\','/', $params['dir']);
            $_dir_parts = preg_split('!/+!', $_dir, -1, PREG_SPLIT_NO_EMPTY);
            if (preg_match('!^((//)|([a-zA-Z]:/))!', $_dir, $_root_dir)) {
                /* leading "//" for network volume, or "[letter]:/" for full path */
                $_new_dir = $_root_dir[1];
                /* remove drive-letter from _dir_parts */
                if (isset($_root_dir[3])) array_shift($_dir_parts);

            } else {
                $_new_dir = str_replace('\\', '/', getcwd()).'/';

            }

            if($_use_open_basedir = !empty($_open_basedir_ini)) {
                $_open_basedirs = explode(';', str_replace('\\', '/', $_open_basedir_ini));
            }

        }

        /* all paths use "/" only from here */
        foreach ($_dir_parts as $_dir_part) {
            $_new_dir .= $_dir_part;

            if ($_use_open_basedir) {
                // do not attempt to test or make directories outside of open_basedir
                $_make_new_dir = false;
                foreach ($_open_basedirs as $_open_basedir) {
                    if (substr($_new_dir, 0, strlen($_open_basedir)) == $_open_basedir) {
                        $_make_new_dir = true;