chamilo-lms/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
 */

/*	INIT SECTION */

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

// Including the global initialization file
require '../inc/global.inc.php';

// 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')) {
	ini_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
$nameTools = get_lang('ImportBackup');
Display::display_header($nameTools);

// Include additional libraries
require_once api_get_path(LIBRARY_PATH).'fileManage.lib.php';
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 the tool title
api_display_tool_title($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
		$course = CourseSelectForm::get_posted_course();
	} else {
		if ($_POST['backup_type'] == 'server') {
			$filename = $_POST['backup_server'];
			$delete_file = false;
		} else {
			if ($_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']);
		$cr->restore();
		Display::display_normal_message(get_lang('ImportFinished').
            '<a class="bottom-link" href="'.api_get_path(WEB_COURSE_PATH).api_get_course_path().'/index.php">'.get_lang('CourseHomepage').'</a>', false);
	} else {
		if (!$error) {
			Display::display_warning_message(get_lang('NoResourcesInBackupFile').
                '<a class="bottom-link" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>', false);
		} elseif ($filename === false) {
            Display::display_error_message(get_lang('ArchivesDirectoryNotWriteableContactAdmin').
                '<a class="bottom-link" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>', false);
        } else {
			Display::display_error_message(api_ucfirst(get_lang('UploadError')).
                '<a class="bottom-link" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>', false);
		}
	}
	CourseArchiver::clean_backup_dir();
} elseif (isset($_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').
            '<a class="bottom-link" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>', false);
    } else {
		Display::display_warning_message(get_lang('NoResourcesInBackupFile').
            '<a class="bottom-link" href="import_backup.php?'.api_get_cidreq().'">'.get_lang('TryAgain').'</a>', false);
	}
} else {
	$user = api_get_user_info();
	$backups = CourseArchiver::get_available_backups($is_platformAdmin?null:$user['user_id']);
	$backups_available = count($backups) > 0;

	echo '<span id="page_title">'.get_lang('SelectBackupFile').'</span><br /><br />';

	require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
	$form = new FormValidator('import_backup_form', 'post', 'import_backup.php', '', 'multipart/form-data');

	$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();