<?php

/**
 * class.Installer.php
 *
 * @package workflow.engine.ProcessMaker
 *
 * ProcessMaker Open Source Edition
 * Copyright (C) 2004 - 2011 Colosa Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information, contact Colosa Inc, 2566 Le Jeune Rd.,
 * Coral Gables, FL, 33134, USA, or email info@colosa.com.
 *
 */
//
// It works with the table CONFIGURATION in a WF dataBase
//
// Copyright (C) 2007 COLOSA
//
// License: LGPL, see LICENSE
////////////////////////////////////////////////////

/**
 * Processmaker Installer
 *
 * @package workflow.engine.ProcessMaker
 * @author maborak
 * @copyright 2008 COLOSA
 */
class Installer
{

    public $options = Array();
    public $result = Array();
    public $error = Array();
    public $report = Array();
    private $connection_database;

    /**
     * construct of insert
     *
     * @param string $pPRO_UID
     * @return void
     */
    public function __construct()
    {
    }

    /**
     * create_site
     *
     * @param array $config
     * @param boolean $confirmed
     * @return void
     */
    public function create_site($config = Array(), $confirmed = false)
    {
        $this->options = G::array_concat(Array('isset' => false, 'password' => G::generate_password(12), 'path_data' => @PATH_DATA, 'path_compiled' => @PATH_C, 'name' => $config['name'], 'database' => Array(), 'admin' => Array('username' => 'admin', 'password' => 'admin'
                    ), 'advanced' => Array('ao_db_wf' => 'wf_' . $config['name'], 'ao_db_rb' => 'rb_' . $config['name'], 'ao_db_rp' => 'rp_' . $config['name'], 'ao_db_drop' => false
                    )
                        ), $config);
        $a = @explode(SYSTEM_HASH, G::decrypt(HASH_INSTALLATION, SYSTEM_HASH));
        $this->options['database'] = G::array_concat(Array('username' => @$a[1], 'password' => @$a[2], 'hostname' => @$a[0]
                        ), $this->options['database']);
        return ($confirmed === true) ? $this->make_site() : $this->create_site_test();
    }

    /**
     * isset_site
     *
     * @param string $name Default value "workflow"
     * @return string file_exists(PATH_DATA."sites/".$name);
     */
    public function isset_site($name = "workflow")
    {
        return file_exists(PATH_DATA . "sites/" . $name);
    }

    /**
     * create_site_test
     *
     * @return void
     */
    private function create_site_test()
    {
        $name = (preg_match('/^[\w]+$/i', trim($this->options['name']))) ? true : false;
        $result = Array('path_data' => $this->is_dir_writable($this->options['path_data']), 'path_compiled' => $this->is_dir_writable($this->options['path_compiled']), 'database' => $this->check_connection(), 'access_level' => $this->cc_status, 'isset' => ($this->options['isset'] == true) ? $this->isset_site($this->options['name']) : false, 'microtime' => microtime(), 'workspace' => $this->options['name'], 'name' => array('status' => $name, 'message' => ($name) ? 'PASSED' : 'Workspace name invalid'
            ), 'admin' => array('username' => (preg_match('/^[\w@\.-]+$/i', trim($this->options['admin']['username']))) ? true : false, 'password' => ((trim($this->options['admin']['password']) == '') ? false : true)
            )
        );
        $result['name']['message'] = ($result['isset']) ? 'Workspace already exist' : $result['name']['message'];
        $result['name']['status'] = ($result['isset']) ? false : $result['name']['status'];
        //print_r($result);
        return Array('created' => G::var_compare(true, $result['path_data'], $result['database']['connection'], $result['name']['status'], $result['database']['version'], $result['database']['ao']['ao_db_wf']['status'], $result['database']['ao']['ao_db_rb']['status'], $result['database']['ao']['ao_db_rp']['status'], $result['admin']['username'], (($result['isset']) ? false : true), $result['admin']['password']), 'result' => $result
        );
    }

    /**
     * make_site
     *
     * @return array $test
     */
    private function make_site()
    {
        $test = $this->create_site_test();

        if ($test["created"] == true || $this->options["advanced"]["ao_db_drop"] == true) {
            /* Check if the hostname is local (localhost or 127.0.0.1) */
            $islocal = (strcmp(substr($this->options['database']['hostname'], 0, strlen('localhost')), 'localhost') === 0) || (strcmp(substr($this->options['database']['hostname'], 0, strlen('127.0.0.1')), '127.0.0.1') === 0);

            $this->wf_site_name = $wf = $this->options['advanced']['ao_db_wf'];

            $this->rbac_site_name = $rb = $this->options['advanced']['ao_db_rb'];
            $this->report_site_name = $rp = $this->options['advanced']['ao_db_rp'];

            $schema = "schema.sql";
            $values = "insert.sql";

            if ($this->options['advanced']['ao_db_drop'] === true) {
                //Delete workspace directory if exists
                //Drop databases
                $this->run_query("DROP DATABASE IF EXISTS " . $wf, "Drop database $wf");
                $this->run_query("DROP DATABASE IF EXISTS " . $rb, "Drop database $rb");
                $this->run_query("DROP DATABASE IF EXISTS " . $rp, "Drop database $rp");
            }

            $this->run_query("CREATE DATABASE IF NOT EXISTS " . $wf . " DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci", "Create database $wf");
            $this->run_query("CREATE DATABASE IF NOT EXISTS " . $rb . " DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci", "Create database $rb");
            $this->run_query("CREATE DATABASE IF NOT EXISTS " . $rp . " DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci", "Create database $rp");

            if ($this->cc_status == 1) {
                $host = ($islocal) ? "localhost" : "%";
                $this->run_query("GRANT ALL PRIVILEGES ON `$wf`.* TO $wf@'$host' IDENTIFIED BY '{$this->options['password']}' WITH GRANT OPTION", "Grant privileges for user $wf on database $wf");
                $this->run_query("GRANT ALL PRIVILEGES ON `$rb`.* TO $rb@'$host' IDENTIFIED BY '{$this->options['password']}' WITH GRANT OPTION", "Grant privileges for user $rb on database $rb");
                $this->run_query("GRANT ALL PRIVILEGES ON `$rp`.* TO $rp@'$host' IDENTIFIED BY '{$this->options['password']}' WITH GRANT OPTION", "Grant privileges for user $rp on database $rp");
            }

            /* Dump schema workflow && data  */

            $this->log("Import database schema:\n");
            $myPortA = explode(":", $this->options['database']['hostname']);
            if (count($myPortA) < 2) {
                $myPortA[1] = "3306";
            }
            $myPort = $myPortA[1];
            $this->options['database']['hostname'] = $myPortA[0];

            mysql_select_db($wf, $this->connection_database);
            $pws = PATH_WORKFLOW_MYSQL_DATA . $schema;
            $qws = $this->query_sql_file(PATH_WORKFLOW_MYSQL_DATA . $schema, $this->connection_database);
            $this->log($qws, isset($qws['errors']));
            $qwv = $this->query_sql_file(PATH_WORKFLOW_MYSQL_DATA . $values, $this->connection_database);
            $this->log($qwv, isset($qwv['errors']));

            $http = (G::is_https() == true) ? 'https' : 'http';
            $lang = defined( 'SYS_LANG' ) ? SYS_LANG : 'en';
            $host = $_SERVER['SERVER_NAME'] . ($_SERVER['SERVER_PORT'] != '80' ? ':' . $_SERVER['SERVER_PORT'] : '');
            $workspace = $this->options['name'];

            $endpoint = sprintf(
            		'%s://%s/sys%s/%s/%s/oauth2/grant',
            		$http,
            		$host,
            		$workspace,
            		$lang,
            		SYS_SKIN
            );

            // inserting the outh_client
            $query = ( "INSERT INTO OAUTH_CLIENTS (CLIENT_ID,CLIENT_SECRET,CLIENT_NAME,CLIENT_DESCRIPTION,CLIENT_WEBSITE,REDIRECT_URI,USR_UID ) VALUES 
            		   ('x-pm-local-client','179ad45c6ce2cb97cf1029e212046e81','PM Web Designer','ProcessMaker Web Designer App','www.processmaker.com','" . $endpoint . "','00000000000000000000000000000001' )");
            $this->run_query( $query );

            /* Dump schema rbac && data  */
            $pws = PATH_RBAC_MYSQL_DATA . $schema;
            mysql_select_db($rb, $this->connection_database);
            $qrs = $this->query_sql_file(PATH_RBAC_MYSQL_DATA . $schema, $this->connection_database);
            $this->log($qrs, isset($qrs['errors']));
            $qrv = $this->query_sql_file(PATH_RBAC_MYSQL_DATA . $values, $this->connection_database);
            $this->log($qrv, isset($qrv['errors']));

            mysql_select_db($wf, $this->connection_database);

            require_once ("propel/Propel.php");
            require_once ('classes/model/AppCacheView.php');

            $appCache = new AppCacheView();
            $appCache->setPathToAppCacheFiles(PATH_METHODS . 'setup/setupSchemas/');
            $triggers = $appCache->getTriggers("en");
            $this->log("Create 'cases list cache' triggers");
            foreach ($triggers as $triggerName => $trigger) {
                $this->run_query($trigger, "-> Trigger $triggerName");
            }

            $path_site = $this->options['path_data'] . "/sites/" . $this->options['name'] . "/";
            $db_file = $path_site . "db.php";
            @mkdir($path_site, 0777, true);
            @mkdir($path_site . "files/", 0777, true);
            @mkdir($path_site . "mailTemplates/", 0777, true);
            @mkdir($path_site . "public/", 0777, true);
            @mkdir($path_site . "reports/", 0777, true);
            @mkdir($path_site . "xmlForms", 0777, true);

            $db_text = "<?php\n" . "// Processmaker configuration\n" . "define ('DB_ADAPTER', 'mysql' );\n" . "define ('DB_HOST', '" . $this->options['database']['hostname'] . ":" . $myPort . "' );\n" . "define ('DB_NAME', '" . $wf . "' );\n" . "define ('DB_USER', '" . (($this->cc_status == 1) ? $wf : $this->options['database']['username']) . "' );\n" . "define ('DB_PASS', '" . (($this->cc_status == 1) ? $this->options['password'] : $this->options['database']['password']) . "' );\n" . "define ('DB_RBAC_HOST', '" . $this->options['database']['hostname'] . ":" . $myPort . "' );\n" . "define ('DB_RBAC_NAME', '" . $rb . "' );\n" . "define ('DB_RBAC_USER', '" . (($this->cc_status == 1) ? $rb : $this->options['database']['username']) . "' );\n" . "define ('DB_RBAC_PASS', '" . (($this->cc_status == 1) ? $this->options['password'] : $this->options['database']['password']) . "' );\n" . "define ('DB_REPORT_HOST', '" . $this->options['database']['hostname'] . ":" . $myPort . "' );\n" . "define ('DB_REPORT_NAME', '" . $rp . "' );\n" . "define ('DB_REPORT_USER', '" . (($this->cc_status == 1) ? $rp : $this->options['database']['username']) . "' );\n" . "define ('DB_REPORT_PASS', '" . (($this->cc_status == 1) ? $this->options['password'] : $this->options['database']['password']) . "' );\n";
            if (defined('PARTNER_FLAG') || isset($_REQUEST['PARTNER_FLAG'])) {
                $db_text .= "define ('PARTNER_FLAG', " . ((defined('PARTNER_FLAG')) ? PARTNER_FLAG : ((isset($_REQUEST['PARTNER_FLAG'])) ? $_REQUEST['PARTNER_FLAG']:'false')) . ");\n";
                if (defined('SYSTEM_NAME')) {
                    $db_text .= "  define ('SYSTEM_NAME', '" . SYSTEM_NAME . "');\n";
                }
            }
            $db_text .="?>";
            $fp = @fopen($db_file, "w");
            $this->log("Create: " . $db_file . "  => " . ((!$fp) ? $fp : "OK") . "\n", $fp === false);
            $ff = @fputs($fp, $db_text, strlen($db_text));
            $this->log("Write: " . $db_file . "  => " . ((!$ff) ? $ff : "OK") . "\n", $ff === false);

            fclose($fp);
            $this->setPartner();
            $this->setAdmin();
        }
        return $test;
    }

    /**
     * set_partner
     *
     * @return void
     */
    public function setPartner()
    {
        $partnerFlag = (defined('PARTNER_FLAG')) ? PARTNER_FLAG : false;
        if ($partnerFlag) {
            // Execute sql for partner
            $pathMysqlPartner = PATH_CORE . 'data' . PATH_SEP . 'partner' . PATH_SEP . 'mysql' . PATH_SEP;
            if (G::verifyPath($pathMysqlPartner)) {
                $res = array();
                $filesSlq = glob($pathMysqlPartner . '*.sql');
                foreach ($filesSlq as $value) {
                    $this->query_sql_file($value, $this->connection_database);
                }
            }

            // Execute to change of skin
            $pathSkinPartner = PATH_CORE . 'data' . PATH_SEP . 'partner' . PATH_SEP . 'skin' . PATH_SEP;
            if (G::verifyPath($pathSkinPartner)) {
                $res = array();
                $fileTar = glob($pathSkinPartner . '*.tar');
                foreach ($fileTar as $value) {
                    $dataFile = pathinfo($value);
                    $nameSkinTmp = $dataFile['filename'];
                    G::LoadThirdParty( 'pear/Archive', 'Tar' );
                    $tar = new Archive_Tar( $value );

                    $pathSkinTmp = $pathSkinPartner . 'tmp' . PATH_SEP;
                    G::rm_dir($pathSkinTmp);
                    G::verifyPath($pathSkinTmp, true);
                    chmod( $pathSkinTmp, 0777);
                    $tar->extract($pathSkinTmp);

                    $pathSkinName = $pathSkinTmp . $nameSkinTmp . PATH_SEP;
                    chmod( $pathSkinName, 0777);
                    G::verifyPath(PATH_CORE . 'skinEngine' . PATH_SEP . 'tmp', true);
                    $skinClassic = PATH_CORE . 'skinEngine' . PATH_SEP . 'tmp' . PATH_SEP;

                    if (is_dir($pathSkinName)) {
                        $this->copyFile($pathSkinName, $skinClassic);
                    }

                    G::rm_dir(PATH_CORE . 'skinEngine' . PATH_SEP . 'base');
                    rename(PATH_CORE . 'skinEngine' . PATH_SEP . 'tmp', PATH_CORE . 'skinEngine' . PATH_SEP . 'base');
                    G::rm_dir(PATH_CORE . 'skinEngine' . PATH_SEP . 'tmp');

                    break;
                }
            }

            //ACTIVE ENTERPRISE

            ini_set('max_execution_time', '0');
            ini_set('memory_limit', '256M');

            $serv = 'http://';
            if (isset($_SERVER['HTTPS']) && trim($_SERVER['HTTPS']) != '') {
                $serv = 'https://';
            }
            $serv .= $_SERVER['SERVER_NAME'];
            if (isset($_SERVER['SERVER_PORT']) && trim($_SERVER['SERVER_PORT']) != '') {
                $serv .= ':' . $_SERVER['SERVER_PORT'];
            }

            // create session
            $cookiefile =  sys_get_temp_dir() . PATH_SEP . 'curl-session';

            $fp = fopen($cookiefile, "w");
            fclose($fp);
            chmod($cookiefile, 0777);

            $user = urlencode($this->options['admin']['username']);
            $pass = urlencode($this->options['admin']['password']);
            $workspace = $this->options['name'];
            $lang = SYS_LANG;
            $skinName = SYS_SKIN;

            $ch = curl_init();

            // set URL and other appropriate options
            curl_setopt($ch, CURLOPT_URL, "$serv/sys{$workspace}/{$lang}/{$skinName}/login/authentication");
            curl_setopt($ch, CURLOPT_HEADER, 0);
            curl_setopt($ch, CURLOPT_COOKIEFILE, $cookiefile);
            curl_setopt($ch, CURLOPT_COOKIEJAR, $cookiefile);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, "form[USR_USERNAME]=$user&form[USR_PASSWORD]=$pass&form[USER_LANG]=$lang");
            curl_setopt($ch, CURLOPT_TIMEOUT, 90);

            $output = curl_exec($ch);
            curl_close($ch);

            $ch = curl_init();
            $postData = array();
            // resolv the plugin name
            $plugins = glob(PATH_CORE."plugins/*.tar");
            if (count($plugins) > 0) {
                $pluginName = $plugins[0];

                // File to upload/post
                $postData['form[PLUGIN_FILENAME]'] = "@{$pluginName}";
                curl_setopt($ch, CURLOPT_URL, "$serv/sys{$workspace}/{$lang}/{$skinName}/setup/pluginsImportFile");
                curl_setopt($ch, CURLOPT_HEADER, 0);
                curl_setopt($ch, CURLOPT_VERBOSE, 0);
                curl_setopt($ch, CURLOPT_COOKIEFILE, $cookiefile);
                curl_setopt($ch, CURLOPT_COOKIEJAR, $cookiefile);
                curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
                curl_setopt($ch, CURLOPT_POST, true);
                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
                curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
                curl_setopt($ch, CURLOPT_TIMEOUT, 90);

                $output = curl_exec($ch);
                curl_close($ch);
            }
        }
    }

    function copyFile($fromDir, $toDir, $chmod=0777)
    {
        $errors = array();
        $messages = array();

        if (!is_writable($toDir))  {
            $errors[]='target '.$toDir.' is not writable';
        }
        if (!is_dir($toDir)) {
            $errors[]='target '.$toDir.' is not a directory';
        }
        if (!is_dir($fromDir)) {
            $errors[]='source '.$fromDir.' is not a directory';
        }
        if (!empty($errors)) {
            return false;
        }

        $exceptions = array ('.','..');
        $handle = opendir($fromDir);
        while (false !== ($item=readdir($handle))) {
            if (!in_array($item,$exceptions)) {
                $from = str_replace('//','/',$fromDir.'/'.$item);
                $to = str_replace('//','/',$toDir.'/'.$item);
                if (is_file($from)) {
                    if (@copy($from,$to)) {
                        chmod($to,$chmod);
                        touch($to,filemtime($from));
                    }
                }

                if (is_dir($from)) {
                    if (@mkdir($to)) {
                        chmod($to,$chmod);
                    }
                    $this->copyFile($from,$to,$chmod);
                }
            }
        }

        closedir($handle);
    }

    /**
     * set_configuration
     *
     * @return void
     */
    public function setConfiguration()
    {
        $oConf = new Configuration();
        $dataCondif = $oConf->getAll();
        if (count($dataCondif)) {
            foreach ($dataCondif as $value) {
                if ($value['CFG_UID'] == 'ENVIRONMENT_SETTINGS') {
                    $query = 'INSERT INTO CONFIGURATION (CFG_UID, OBJ_UID, CFG_VALUE, PRO_UID, USR_UID, APP_UID) VALUES';
                    $query .= "('" .
                        $value['CFG_UID']   . "', '".
                        $value['OBJ_UID']   . "', '".
                        $value['CFG_VALUE'] . "', '".
                        $value['PRO_UID']   . "', '".
                        $value['USR_UID']   . "', '".
                        $value['APP_UID']   . "')";
                    mysql_select_db($this->wf_site_name, $this->connection_database);
                    $this->run_query($query, "Copy configuracion environment");
                    break;
                }
            }
        }
    }

    /**
     * set_admin
     *
     * @return void
     */
    public function setAdmin()
    {
        mysql_select_db($this->wf_site_name, $this->connection_database);
        //  The mysql_escape_string function has been DEPRECATED as of PHP 5.3.0.
        //  $this->run_query('UPDATE USERS SET USR_USERNAME = \''.mysql_escape_string($this->options['admin']['username']).'\', `USR_PASSWORD` = \''.md5($this->options['admin']['password']).'\' WHERE `USR_UID` = \'00000000000000000000000000000001\' LIMIT 1',
        //    "Add 'admin' user in ProcessMaker (wf)");
        $this->run_query('UPDATE USERS SET USR_USERNAME = \'' . mysql_real_escape_string($this->options['admin']['username']) . '\', ' . '  `USR_PASSWORD` = \'' . md5($this->options['admin']['password']) . '\' ' . '  WHERE `USR_UID` = \'00000000000000000000000000000001\' LIMIT 1', "Add 'admin' user in ProcessMaker (wf)");
        mysql_select_db($this->rbac_site_name, $this->connection_database);
        // The mysql_escape_string function has been DEPRECATED as of PHP 5.3.0.
        // $this->run_query('UPDATE USERS SET USR_USERNAME = \''.mysql_escape_string($this->options['admin']['username']).'\', `USR_PASSWORD` = \''.md5($this->options['admin']['password']).'\' WHERE `USR_UID` = \'00000000000000000000000000000001\' LIMIT 1',
        //   "Add 'admin' user in ProcessMaker (rb)");
        $this->run_query('UPDATE USERS SET USR_USERNAME = \'' . mysql_real_escape_string($this->options['admin']['username']) . '\', ' . '  `USR_PASSWORD` = \'' . md5($this->options['admin']['password']) . '\' ' . '  WHERE `USR_UID` = \'00000000000000000000000000000001\' LIMIT 1', "Add 'admin' user in ProcessMaker (rb)");
    }

    /**
     * Run a mysql query on the current database and take care of logging and
     * error handling.
     *
     * @param string $query SQL command
     * @param string $description Description to log instead of $query
     */
    private function run_query($query, $description = null)
    {
        $result = @mysql_query($query, $this->connection_database);
        $error = ($result) ? false : mysql_error();
        $this->log(($description ? $description : $query) . " => " . (($error) ? $error : "OK") . "\n", $error);
    }

    /**
     * query_sql_file
     *
     * @param string $file
     * @param string $connection
     * @return array $report
     */
    public function query_sql_file($file, $connection)
    {
        $lines = file($file);
        $previous = null;
        $errors = '';
        @mysql_query("SET NAMES 'utf8';");
        foreach ($lines as $j => $line) {
            $line = trim($line); // Remove comments from the script


            if (strpos($line, "--") === 0) {
                $line = substr($line, 0, strpos($line, "--"));
            }

            if (empty($line)) {
                continue;
            }

            if (strpos($line, "#") === 0) {
                $line = substr($line, 0, strpos($line, "#"));
            }

            if (empty($line)) {
                continue;
            }

            // Concatenate the previous line, if any, with the current
            if ($previous) {
                $line = $previous . " " . $line;
            }
            $previous = null;

            // If the current line doesnt end with ; then put this line together
            // with the next one, thus supporting multi-line statements.
            if (strrpos($line, ";") != strlen($line) - 1) {
                $previous = $line;
                continue;
            }

            $line = substr($line, 0, strrpos($line, ";"));
            @mysql_query($line, $connection);
        }
    }

    /**
     * check_path
     *
     * @return void
     * @todo Empty function
     */
    private function check_path()
    {
    }

    /**
     * function find_root_path
     *
     * @param string $path
     * @return string $path
     */
    private function find_root_path($path)
    {
        $i = 0; //prevent loop inifinity
        while (!is_dir($path) && ($path = dirname($path)) && ((strlen($path) > 1) && $i < 10)) {
            $i++;
        }
        return $path;
    }

    /**
     * file_permisions
     *
     * @param string $file
     * @param integer $def default value 777
     * @return integer $def
     */
    public function file_permisions($file, $def = 777)
    {
        if (PHP_OS == 'WINNT') {
            return $def;
        } else {
            return (int) substr(sprintf('%o', @fileperms($file)), - 4);
        }
    }

    /**
     * is_dir_writable
     *
     * @param string $dir default value empty
     * @return string $path
     */
    public function is_dir_writable($dir = '')
    {
        if (PHP_OS == 'WINNT') {
            $dir = $this->find_root_path($dir);
            return file_exists($dir);
        } else {
            $dir = $this->find_root_path($dir);
            return (is_writable($dir) && is_readable($dir));
        }
    }

    /**
     * getDirectoryFiles
     *
     * @param string $dir default value empty
     * @return string $path
     */
    public function getDirectoryFiles($dir, $extension)
    {
        $filesArray = array();
        if (file_exists($dir)) {
            if ($handle = opendir($dir)) {
                while (false !== ($file = readdir($handle))) {
                    $fileParts = explode(".", $file);
                    if ($fileParts[count($fileParts) - 1] == $extension) {
                        $filesArray[] = $file;
                    }
                }
                closedir($handle);
            }
        }
        return $filesArray;
    }

    /**
     * check_db_empty
     *
     * @param string $dbName
     * @return boolean true or false
     */
    public function check_db_empty($dbName)
    {
        $a = @mysql_select_db($dbName, $this->connection_database);
        if (!$a) {
            return true;
        }
        $q = @mysql_query('SHOW TABLES', $this->connection_database);
        return (@mysql_num_rows($q) > 0) ? false : true;
    }

    /**
     * check_db
     *
     * @param string $dbName
     * @return Array Array('status' => true or false,'message' => string)
     */
    public function check_db($dbName)
    {
        if (!$this->connection_database) {
            //erik: new verification if the mysql extension is enabled
            $error = class_exists('mysql_error') ? mysql_error() : 'Mysql Module for PHP is not enabled!';
            return Array('status' => false, 'message' => $error
            );
        } else {
            if (!mysql_select_db($dbName, $this->connection_database) && $this->cc_status != 1) {
                return Array('status' => false, 'message' => mysql_error()
                );
            } else {
                /*        var_dump($this->options['advanced']['ao_db_drop'],$this->cc_status,$this->check_db_empty($dbName));
                  if(($this->options['advanced']['ao_db_drop']===false && $this->cc_status!=1 && !$this->check_db_empty($dbName)) )
                  {
                  return Array('status'=>false,'message'=>'Database is not empty');
                  }
                  else
                  {
                  return Array('status'=>true,'message'=>'OK');
                  } */
                if ($this->options['advanced']['ao_db_drop'] === true || $this->check_db_empty($dbName)) {
                    return Array('status' => true, 'message' => 'PASSED'
                    );
                } else {
                    return Array('status' => false, 'message' => 'Database is not empty'
                    );
                }
            }
        }
    }

    /**
     * check_connection
     *
     * @return Array $rt
     */
    private function check_connection()
    {
        if (!function_exists("mysql_connect")) {
            $this->cc_status = 0;
            $rt = Array('connection' => false, 'grant' => 0, 'version' => false, 'message' => "ERROR: Mysql Module for PHP is not enabled, try install <b>php-mysql</b> package.", 'ao' => Array('ao_db_wf' => false, 'ao_db_rb' => false, 'ao_db_rp' => false
                )
            );
        } else {
            $this->connection_database = @mysql_connect($this->options['database']['hostname'], $this->options['database']['username'], $this->options['database']['password']);
            $rt = Array('version' => false, 'ao' => Array('ao_db_wf' => false, 'ao_db_rb' => false, 'ao_db_rp' => false
                )
            );
            if (!$this->connection_database) {
                $this->cc_status = 0;
                $rt['connection'] = false;
                $rt['grant'] = 0;
                $rt['message'] = "Mysql error: " . mysql_error();
            } else {
                preg_match('@[0-9]+\.[0-9]+\.[0-9]+@', mysql_get_server_info($this->connection_database), $version);
                $rt['version'] = version_compare(@$version[0], "4.1.0", ">=");
                $rt['connection'] = true;

                $dbNameTest = "PROCESSMAKERTESTDC";
                $db = @mysql_query("CREATE DATABASE " . $dbNameTest, $this->connection_database);
                if (!$db) {
                    $this->cc_status = 3;
                    $rt['grant'] = 3;
                    //$rt['message'] = "Db GRANTS error:  ".mysql_error();
                    $rt['message'] = "Successful connection";
                } else {

                    //@mysql_drop_db("processmaker_testGA");
                    $usrTest = "wfrbtest";
                    $chkG = "GRANT ALL PRIVILEGES ON `" . $dbNameTest . "`.* TO " . $usrTest . "@'%' IDENTIFIED BY 'sample' WITH GRANT OPTION";
                    $ch = @mysql_query($chkG, $this->connection_database);
                    if (!$ch) {
                        $this->cc_status = 2;
                        $rt['grant'] = 2;
                        //$rt['message'] = "USER PRIVILEGES ERROR";
                        $rt['message'] = "Successful connection";
                    } else {
                        $this->cc_status = 1;
                        @mysql_query("DROP USER " . $usrTest . "@'%'", $this->connection_database);
                        $rt['grant'] = 1;
                        $rt['message'] = "Successful connection";
                    }
                    @mysql_query("DROP DATABASE " . $dbNameTest, $this->connection_database);
                }
                //        var_dump($wf,$rb,$rp);
            }
        }
        $rt['ao']['ao_db_wf'] = $this->check_db($this->options['advanced']['ao_db_wf']);
        $rt['ao']['ao_db_rb'] = $this->check_db($this->options['advanced']['ao_db_rb']);
        $rt['ao']['ao_db_rp'] = $this->check_db($this->options['advanced']['ao_db_rp']);
        return $rt;
    }

    /**
     * log
     *
     * @param string $text
     * @return void
     */
    public function log($text, $failed = null)
    {
        array_push($this->report, $text);
        if ($failed) {
            throw new Exception(is_string($text) ? $text : var_export($text, true) );
        }
    }
}