chamilo-lms2/main/coursecopy/import_backup.php

<?php
/* For licensing terms, see /license.txt */
/**
 * Import a backup.
 *
 * @author Bart Mollet <bart.mollet@hogent.be>
 * @package chamilo.backup
 */
/**
 * Code
 */
/*	INIT SECTION */

// Language files that need to be included
$language_file = array('exercice', 'coursebackup', 'admin');

// Including the global initialization file
require_once '../inc/global.inc.php';
$current_course_tool = TOOL_COURSE_MAINTENANCE;
api_protect_course_script(true);

// Check access rights (only teachers are allowed here)
if (!api_is_allowed_to_edit()) {
    api_not_allowed(true);
}

// Remove memory and time limits as much as possible as this might be a long process...
if (function_exists('ini_set')) {
	api_set_memory_limit('256M');
    ini_set('max_execution_time', 1800);
}

// Section for the tabs
$this_section = SECTION_COURSES;

// Breadcrumbs
$interbreadcrumb[] = array('url' => '../course_info/maintenance.php', 'name' => get_lang('Maintenance'));

// Displaying the header
$nameTools = get_lang('ImportBackup');


// Include additional libraries
require_once 'classes/CourseBuilder.class.php';
require_once 'classes/CourseArchiver.class.php';
require_once 'classes/CourseRestorer.class.php';
require_once 'classes/CourseSelectForm.class.php';

Display::display_header($nameTools);
// Display the tool title
echo Display::page_header($nameTools);

/*	MAIN CODE */

if ((isset($_POST['action']) && $_POST['action'] == 'course_select_form') || (isset($_POST['import_option']) && $_POST['import_option'] == 'full_backup')) {
    $error = false;
    if (isset($_POST['action']) && $_POST['action'] == 'course_select_form') {
        // Partial backup here we recover the documents posted
        $course = CourseSelectForm::get_posted_course();

    } else {
        $backupServer = isset($_POST['backup_server']) ? $_POST['backup_server'] : null;
        if ($backupServer == 'server') {
            $filename = $backupServer;
            $delete_file = false;
        } else {
            if ($_FILES['backup']['error'] == 0) {
                $filename = CourseArchiver::import_uploaded_file($_FILES['backup']['tmp_name']);
                if ($filename === false) {
                    $error = true;
                } else {
                    $delete_file = true;
                }
            } else {
                $error = true;
            }
        }

        if (!$error) {
            // Full backup
            $course = CourseArchiver::read_course($filename, $delete_file);
        }
    }


    if (!$error && $course->has_resources()) {

        $cr = new CourseRestorer($course);
        $cr->set_file_option($_POST['same_file_name_option']);
        $cr->restore();

        Display::display_normal_message(get_lang('ImportFinished'));
        echo '<a class="btn" href="'.api_get_path(WEB_COURSE_PATH).api_get_course_path().'/index.php">'.get_lang(
            'CourseHomepage'
        ).'</a>';

    } else {
        if (!$error) {
            Display::display_warning_message(get_lang('NoResourcesInBackupFile'));
            echo  '<a class="btn" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>';
        } elseif ($filename === false) {
            Display::display_error_message(get_lang('ArchivesDirectoryNotWriteableContactAdmin'));
            echo '<a class="btn" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>';
        } else {
            if ($filename == '') {
                Display::display_error_message(get_lang('SelectBackupFile'));
                echo '<a class="btn" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>';
            } else {
                Display::display_error_message(get_lang('UploadError'));
                echo '<a class="btn" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>';
            }
        }
    }
    CourseArchiver::clean_backup_dir();
    // @todo fix fatal error due a file upload
    header('Location: '.api_get_path(WEB_COURSE_PATH).api_get_course_path().'/index.php');
    exit;
} elseif (isset($_POST['import_option']) && $_POST['import_option'] == 'select_items') {
    if ($_POST['backup_type'] == 'server') {
        $filename = $_POST['backup_server'];
        $delete_file = false;
    } else {
        $filename = CourseArchiver::import_uploaded_file($_FILES['backup']['tmp_name']);
        $delete_file = true;
    }
    $course = CourseArchiver::read_course($filename, $delete_file);

    if ($course->has_resources() && ($filename !== false)) {
        CourseSelectForm::display_form($course, array('same_file_name_option' => $_POST['same_file_name_option']));
    } elseif ($filename === false) {
        Display::display_error_message(get_lang('ArchivesDirectoryNotWriteableContactAdmin'));
        echo '<a class="btn" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>';
    } else {
        Display::display_warning_message(get_lang('NoResourcesInBackupFile'));
        echo '<a class="btn" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>';
    }
} else {
    $user = api_get_user_info();
    $user = $is_platformAdmin ? null : $user['user_id'];
    $backups = CourseArchiver::get_available_backups($user);
    $backups_available = count($backups) > 0;

    $form = new FormValidator('import_backup_form', 'post', api_get_path(WEB_PUBLIC_PATH).'main/coursecopy/import_backup.php', '', 'multipart/form-data');
    $form->addElement('header', get_lang('SelectBackupFile'));
    $renderer = $form->defaultRenderer();
    $renderer->setElementTemplate('<div>{element}</div> ');

    $form->addElement('hidden', 'action', 'restore_backup');

    $form->addElement(
        'radio',
        'backup_type',
        '',
        get_lang('LocalFile'),
        'local',
        'id="bt_local" class="checkbox" onclick="javascript: document.import_backup_form.backup_server.disabled=true;document.import_backup_form.backup.disabled=false;"'
    );
    $form->addElement('file', 'backup', '', 'style="margin-left: 50px;"');
    $form->addElement('html', '<br />');

    if ($backups_available) {
        $form->addElement(
            'radio',
            'backup_type',
            '',
            get_lang('ServerFile'),
            'server',
            'id="bt_server" class="checkbox" onclick="javascript: document.import_backup_form.backup_server.disabled=false;document.import_backup_form.backup.disabled=true;"'
        );
        $options['null'] = '-';
        foreach ($backups as $index => $backup) {
            $options[$backup['file']] = $backup['course_code'].' ('.$backup['date'].')';
        }
        $form->addElement('select', 'backup_server', '', $options, 'style="margin-left: 50px;"');
        $form->addElement(
            'html',
            '<script type="text/javascript">document.import_backup_form.backup_server.disabled=true;</script>'
        );
    } else {
        $form->addElement('radio', '', '', '<i>'.get_lang('NoBackupsAvailable').'</i>', '', 'disabled="true"');
    }

    $form->addElement('html', '<br /><br />');

    $form->addElement(
        'radio',
        'import_option',
        '',
        get_lang('ImportFullBackup'),
        'full_backup',
        'id="import_option_1" class="checkbox"'
    );
    $form->addElement(
        'radio',
        'import_option',
        '',
        get_lang('LetMeSelectItems'),
        'select_items',
        'id="import_option_2" class="checkbox"'
    );

    $form->addElement('html', '<br /><br />');

    $form->addElement('html', get_lang('SameFilename'));
    $form->addElement('html', '<br /><br />');
    $form->addElement(
        'radio',
        'same_file_name_option',
        '',
        get_lang('SameFilenameSkip'),
        FILE_SKIP,
        'id="same_file_name_option_1" class="checkbox"'
    );
    $form->addElement(
        'radio',
        'same_file_name_option',
        '',
        get_lang('SameFilenameRename'),
        FILE_RENAME,
        'id="same_file_name_option_2" class="checkbox"'
    );
    $form->addElement(
        'radio',
        'same_file_name_option',
        '',
        get_lang('SameFilenameOverwrite'),
        FILE_OVERWRITE,
        'id="same_file_name_option_3" class="checkbox"'
    );

    $form->addElement('html', '<br />');
    $form->addElement('style_submit_button', null, get_lang('ImportBackup'), 'class="save"');

    $values['backup_type'] = 'local';
    $values['import_option'] = 'full_backup';
    $values['same_file_name_option'] = FILE_OVERWRITE;
    $form->setDefaults($values);

    $form->add_progress_bar();
    // When progress bar appears we have to hide the title "Select backup file".
    $form->updateAttributes(
        array(
            'onsubmit' => str_replace(
                'javascript: ',
                'javascript: page_title = getElementById(\'page_title\'); if (page_title) { setTimeout(\'page_title.style.display = \\\'none\\\';\', 2000); } ',
                $form->getAttribute('onsubmit')
            )
        )
    );

    $form->display();
}

/*	FOOTER */
Display::display_footer();