install.php

<?php
/*
    part-db version 0.1
    Copyright (C) 2005 Christoph Lechner
    http://www.cl-projects.de/

    part-db version 0.2+
    Copyright (C) 2009 K. Jacobs and others (see authors.php)
    http://code.google.com/p/part-db/

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
*/


    /*
     * Steps:
     *
     *  - set_locales
     *  - set_admin_password
     *  - set_db_settings
     *  - set_db_backup_path
     *
     */

    include_once('start_session.php');

    $messages = array();
    $fatal_error = false;

    /********************************************************************************
    *
    *   Evaluate $_REQUEST
    *
    *********************************************************************************/

    // step "set_locales"
    $timezone       = isset($_REQUEST['timezone'])          ? (string)$_REQUEST['timezone']             : 'Europe/Berlin';
    $language       = isset($_REQUEST['language'])          ? (string)$_REQUEST['language']             : 'de_DE';

    // step "set_admin_password"
    $adminpass_1    = isset($_REQUEST['adminpass_1'])       ? trim((string)$_REQUEST['adminpass_1'])    : '';
    $adminpass_2    = isset($_REQUEST['adminpass_2'])       ? trim((string)$_REQUEST['adminpass_2'])    : '';

    // step "set_db_settings"
    $db_type        = isset($_REQUEST['db_type'])           ? (string)$_REQUEST['db_type']              : 'mysql';
    $db_charset     = isset($_REQUEST['db_charset'])        ? (string)$_REQUEST['db_charset']           : 'utf8';
    $db_host        = isset($_REQUEST['db_host'])           ? (string)$_REQUEST['db_host']              : 'localhost';
    $db_name        = isset($_REQUEST['db_name'])           ? (string)$_REQUEST['db_name']              : 'part-db';
    $db_user        = isset($_REQUEST['db_user'])           ? (string)$_REQUEST['db_user']              : '';
    $db_password    = isset($_REQUEST['db_password'])       ? trim((string)$_REQUEST['db_password'])    : '';

    // step "set_db_backup_path"
    $db_backup_name = isset($_REQUEST['db_backup_name'])    ? (string)$_REQUEST['db_backup_name']       : '';
    $db_backup_path = isset($_REQUEST['db_backup_path'])    ? (string)$_REQUEST['db_backup_path']       : '';

    // actions
    $action = 'default';
    if (isset($_REQUEST['save_locales']))                   {$action = 'save_locales';}
    if (isset($_REQUEST['save_admin_password']))            {$action = 'save_admin_password';}
    if (isset($_REQUEST['save_db_settings']))               {$action = 'save_db_settings';}
    if (isset($_REQUEST['save_db_backup_path']))            {$action = 'save_db_backup_path';}

    /********************************************************************************
    *
    *   Initialize Objects
    *
    *********************************************************************************/

    $html = new HTML($config['html']['theme'], $config['html']['custom_css'], 'Part-DB Installation/Update');

    try
    {
        $system_version = SystemVersion::get_installed_version();
    }
    catch (Exception $e)
    {
        $messages[] = array('text' => nl2br($e->getMessage()), 'strong' => true, 'color' => 'red');
        $fatal_error = true;
    }

    /********************************************************************************
    *
    *   Execute actions
    *
    *********************************************************************************/

    if ( ! $fatal_error)
    {
        switch ($action)
        {
            case 'save_locales':
                try
                {
                    $config['timezone'] = $timezone;
                    $config['language'] = $language;

                    // check if the server supports the selected language and print a warning if not
                    if ( ! own_setlocale(LC_ALL, $config['language']))
                        throw new Exception('Die gewählte Sprache "'.$config['language'].'" wird vom Server nicht unterstützt!'.
                                            "\nBitte installieren Sie diese Sprache oder wählen Sie eine andere.");

                    $config['installation_complete']['locales'] = true; // locales successful set
                }
                catch (Exception $e)
                {
                    $messages[] = array('text' => nl2br($e->getMessage()), 'strong' => true, 'color' => 'red');
                }
                break;

            case 'save_admin_password':
                try
                {
                    // set_admin_password() throws an exception if the new passwords are not valid
                    set_admin_password(NULL, $adminpass_1, $adminpass_2, false);

                    $config['installation_complete']['admin_password'] = true; // admin password successful set
                }
                catch (Exception $e)
                {
                    $messages[] = array('text' => nl2br($e->getMessage()), 'strong' => true, 'color' => 'red');
                }
                break;

            case 'save_db_settings':
                try
                {
                    $config['db']['type'] = $db_type;
                    //$config['db']['charset'] = $db_charset; // temporarly deactivated
                    $config['db']['host'] = $db_host;
                    $config['db']['name'] = $db_name;
                    $config['db']['user'] = $db_user;
                    $config['db']['password'] = $db_password;

                    if (strlen($config['db']['name']) == 0)
                        throw new Exception('Der Datenbankname darf nicht leer sein!');

                    $database = new Database(); // test the connection --> Exception if it doesn't work

                    $config['installation_complete']['database'] = true; // database settings successful set
                }
                catch (Exception $e)
                {
                    $messages[] = array('text' => nl2br($e->getMessage()), 'strong' => true, 'color' => 'red');
                }
                break;

            case 'save_db_backup_path':
                try
                {
                    $config['db']['backup']['name'] = $db_backup_name;
                    $config['db']['backup']['url'] = $db_backup_path;

                    $config['installation_complete']['db_backup_path'] = true; // database backup path successful set
                }
                catch (Exception $e)
                {
                    $messages[] = array('text' => nl2br($e->getMessage()), 'strong' => true, 'color' => 'red');
                }
                break;

            default:
                break;
        }
    }

    // try to save the config array in config.php --> fatal error if this does not work!
    try
    {
        save_config();
    }
    catch (Exception $e)
    {
        $messages[] = array('text' => nl2br($e->getMessage()), 'strong' => true, 'color' => 'red');
        $fatal_error = true;
    }

    /********************************************************************************
    *
    *   Decide which installation step should be displayed next
    *   and set the rest of the HTML variables
    *
    *********************************************************************************/

    if (! $fatal_error)
    {
        // global variables
        $html->set_variable('system_version',       $system_version->as_string(false, true, true, false),  'string');
        $html->set_variable('system_version_full',  $system_version->as_string(false, false, false, true), 'string');

        if ( ! $config['installation_complete']['locales'])
        {
            // step "set_locales"
            $tmpl_site_to_show = 'set_locales';
            $html->set_loop('timezone_loop',        array_to_template_loop($config['timezones'],    $config['timezone']));
            $html->set_loop('language_loop',        array_to_template_loop($config['languages'],    $config['language']));
        }
        elseif ( ! $config['installation_complete']['admin_password'])
        {
            $tmpl_site_to_show = 'set_admin_password';
        }
        elseif ( ! $config['installation_complete']['database'])
        {
            // step "set_db_settings"
            $tmpl_site_to_show = 'set_db_settings';
            $html->set_loop('db_type_loop',         array_to_template_loop($config['db_types'],     $config['db']['type']));
            $html->set_loop('db_charset_loop',      array_to_template_loop($config['db_charsets'],  $config['db']['charset']));
            $html->set_variable('db_host',          $config['db']['host'],                          'string');
            $html->set_variable('db_name',          $config['db']['name'],                          'string');
            $html->set_variable('db_user',          $config['db']['user'],                          'string');
        }
        elseif ( ! $config['installation_complete']['db_backup_path'])
        {
            // step "set_db_backup_path"
            $tmpl_site_to_show = 'set_db_backup_path';
            $html->set_variable('db_backup_name',   $config['db']['backup']['name'],                'string');
            $html->set_variable('db_backup_path',   $config['db']['backup']['url'],                 'string');
        }
        else
        {
            // installation/update complete
            $tmpl_site_to_show = 'finish';
        }
    }

    /********************************************************************************
    *
    *   Generate HTML Output
    *
    *********************************************************************************/

    $reload_link = $fatal_error ? 'install.php' : '';   // an empty string means that the...
    $html->print_header($messages, $reload_link);       // ...reload-button won't be visible

    $html->print_template('header');

    if (! $fatal_error)
        $html->print_template($tmpl_site_to_show);

    $html->print_footer();

?>