function backup_execute(&$preferences, &$errorstr)
{
global $CFG;
$status = true;
//Check for temp and backup and backup_unique_code directory
//Create them as needed
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("creatingtemporarystructures") . '</li>';
}
$status = check_and_create_backup_dir($preferences->backup_unique_code);
//Empty dir
if ($status) {
$status = clear_backup_dir($preferences->backup_unique_code);
}
//Delete old_entries from backup tables
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("deletingolddata") . '</li>';
}
$status = backup_delete_old_data();
if (!$status) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred deleting old backup data");
} else {
$errorstr = "An error occurred deleting old backup data";
return false;
}
}
//Create the moodle.xml file
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("creatingxmlfile");
//Begin a new list to xml contents
echo "<ul>";
echo "<li>" . get_string("writingheader") . '</li>';
}
//Obtain the xml file (create and open) and print prolog information
$backup_file = backup_open_xml($preferences->backup_unique_code);
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writinggeneralinfo") . '</li>';
}
//Prints general info about backup to file
if ($backup_file) {
if (!($status = backup_general_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up general info");
} else {
$errorstr = "An error occurred while backing up general info";
return false;
}
}
}
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writingcoursedata");
//Start new ul (for course)
echo "<ul>";
echo "<li>" . get_string("courseinfo") . '</li>';
}
//Prints course start (tag and general info)
if ($status) {
if (!($status = backup_course_start($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up course start");
} else {
$errorstr = "An error occurred while backing up course start";
return false;
}
}
}
//Metacourse information
if ($status && $preferences->backup_metacourse) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("metacourse") . '</li>';
}
if (!($status = backup_course_metacourse($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up metacourse info");
} else {
$errorstr = "An error occurred while backing up metacourse info";
return false;
}
}
}
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("blocks") . '</li>';
}
//Blocks information
if ($status) {
if (!($status = backup_course_blocks($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up course blocks");
} else {
$errorstr = "An error occurred while backing up course blocks";
return false;
}
}
}
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("sections") . '</li>';
}
//Section info
if ($status) {
if (!($status = backup_course_sections($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up course sections");
} else {
$errorstr = "An error occurred while backing up course sections";
return false;
}
}
}
//End course contents (close ul)
if (!defined('BACKUP_SILENTLY')) {
echo "</ul></li>";
}
//User info
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writinguserinfo") . '</li>';
}
if (!($status = backup_user_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up user info");
} else {
$errorstr = "An error occurred while backing up user info";
return false;
}
}
}
//If we have selected to backup messages and we are
//doing a SITE backup, let's do it
if ($status && $preferences->backup_messages && $preferences->backup_course == SITEID) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writingmessagesinfo") . '</li>';
}
if (!($status = backup_messages($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up messages");
} else {
$errorstr = "An error occurred while backing up messages";
return false;
}
}
}
//If we have selected to backup blogs and we are
//doing a SITE backup, let's do it
if ($status && $preferences->backup_blogs && $preferences->backup_course == SITEID) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writingblogsinfo") . '</li>';
}
if (!($status = backup_blogs($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up blogs");
} else {
$errorstr = "An error occurred while backing up blogs";
return false;
}
}
}
//If we have selected to backup quizzes or other modules that use questions
//we've already added ids of categories and questions to backup to backup_ids table
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writingcategoriesandquestions") . '</li>';
}
require_once $CFG->dirroot . '/question/backuplib.php';
if (!($status = backup_question_categories($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up quiz categories");
} else {
$errorstr = "An error occurred while backing up quiz categories";
return false;
}
}
}
//Print logs if selected
if ($status) {
if ($preferences->backup_logs) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writingloginfo") . '</li>';
}
if (!($status = backup_log_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up log info");
} else {
$errorstr = "An error occurred while backing up log info";
return false;
}
}
}
}
//Print scales info
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writingscalesinfo") . '</li>';
}
if (!($status = backup_scales_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up scales");
} else {
$errorstr = "An error occurred while backing up scales";
return false;
}
}
}
//Print groups info
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writinggroupsinfo") . '</li>';
}
if (!($status = backup_groups_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up groups");
} else {
$errostr = "An error occurred while backing up groups";
return false;
}
}
}
//Print groupings info
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writinggroupingsinfo") . '</li>';
}
if (!($status = backup_groupings_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up groupings");
} else {
$errorstr = "An error occurred while backing up groupings";
return false;
}
}
}
//Print groupings_groups info
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writinggroupingsgroupsinfo") . '</li>';
}
if (!($status = backup_groupings_groups_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up groupings groups");
} else {
$errorstr = "An error occurred while backing up groupings groups";
return false;
}
}
}
//Print events info
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writingeventsinfo") . '</li>';
}
if (!($status = backup_events_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up events");
} else {
$errorstr = "An error occurred while backing up events";
return false;
}
}
}
//Print gradebook info
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writinggradebookinfo") . '</li>';
}
if (!($status = backup_gradebook_info($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up gradebook");
} else {
$errorstr = "An error occurred while backing up gradebook";
return false;
}
}
}
//Module info, this unique function makes all the work!!
//db export and module fileis copy
if ($status) {
$mods_to_backup = false;
//Check if we have any mod to backup
foreach ($preferences->mods as $module) {
if ($module->backup) {
$mods_to_backup = true;
}
}
//If we have to backup some module
if ($mods_to_backup) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("writingmoduleinfo");
}
//Start modules tag
if (!($status = backup_modules_start($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up module info");
} else {
$errorstr = "An error occurred while backing up module info";
return false;
}
}
//Open ul for module list
if (!defined('BACKUP_SILENTLY')) {
echo "<ul>";
}
//Iterate over modules and call backup
foreach ($preferences->mods as $module) {
if ($module->backup and $status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("modulenameplural", $module->name) . '</li>';
}
if (!($status = backup_module($backup_file, $preferences, $module->name))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up '{$module->name}'");
} else {
$errorstr = "An error occurred while backing up '{$module->name}'";
return false;
}
}
}
}
//Close ul for module list
if (!defined('BACKUP_SILENTLY')) {
echo "</ul></li>";
}
//Close modules tag
if (!($status = backup_modules_end($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while finishing the module backups");
} else {
$errorstr = "An error occurred while finishing the module backups";
return false;
}
}
}
}
//Backup course format data, if any.
if (!defined('BACKUP_SILENTLY')) {
echo '<li>' . get_string("courseformatdata") . '</li>';
}
if ($status) {
if (!($status = backup_format_data($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while backing up the course format data");
} else {
$errorstr = "An error occurred while backing up the course format data";
return false;
}
}
}
//Prints course end
if ($status) {
if (!($status = backup_course_end($backup_file, $preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while closing the course backup");
} else {
$errorstr = "An error occurred while closing the course backup";
return false;
}
}
}
//Close the xml file and xml data
if ($backup_file) {
backup_close_xml($backup_file);
}
//End xml contents (close ul)
if (!defined('BACKUP_SILENTLY')) {
echo "</ul></li>";
}
}
//Now, if selected, copy user files
if ($status) {
if ($preferences->backup_user_files) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("copyinguserfiles") . '</li>';
}
if (!($status = backup_copy_user_files($preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while copying user files");
} else {
$errorstr = "An error occurred while copying user files";
return false;
}
}
}
}
//Now, if selected, copy course files
if ($status) {
if ($preferences->backup_course_files) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("copyingcoursefiles") . '</li>';
}
if (!($status = backup_copy_course_files($preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while copying course files");
} else {
$errorstr = "An error occurred while copying course files";
return false;
}
}
}
}
//Now, if selected, copy site files
if ($status) {
if ($preferences->backup_site_files) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("copyingsitefiles") . '</li>';
}
if (!($status = backup_copy_site_files($preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while copying site files");
} else {
$errorstr = "An error occurred while copying site files";
return false;
}
}
}
}
//Now, zip all the backup directory contents
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("zippingbackup") . '</li>';
}
if (!($status = backup_zip($preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while zipping the backup");
} else {
$errorstr = "An error occurred while zipping the backup";
return false;
}
}
}
//Now, copy the zip file to course directory
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("copyingzipfile") . '</li>';
}
if (!($status = copy_zip_to_course_dir($preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while copying the zip file to the course directory");
} else {
$errorstr = "An error occurred while copying the zip file to the course directory";
return false;
}
}
}
//Now, clean temporary data (db and filesystem)
if ($status) {
if (!defined('BACKUP_SILENTLY')) {
echo "<li>" . get_string("cleaningtempdata") . '</li>';
}
if (!($status = clean_temp_data($preferences))) {
if (!defined('BACKUP_SILENTLY')) {
notify("An error occurred while cleaning up temporary data");
} else {
$errorstr = "An error occurred while cleaning up temporary data";
return false;
}
}
}
return $status;
}
/**
* @param string $errorstr passed by reference, if silent is true,
* errorstr will be populated and this function will return false rather than calling error() or notify()
* @param boolean $noredirect (optional) if this is passed, this function will not print continue, or
* redirect to the next step in the restore process, instead will return $backup_unique_code
*/
function restore_precheck($id, $file, &$errorstr, $noredirect = false)
{
global $CFG, $SESSION;
//Prepend dataroot to variable to have the absolute path
$file = $CFG->dataroot . "/" . $file;
if (!defined('RESTORE_SILENTLY')) {
//Start the main table
echo "<table cellpadding=\"5\">";
echo "<tr><td>";
//Start the mail ul
echo "<ul>";
}
//Check the file exists
if (!is_file($file)) {
if (!defined('RESTORE_SILENTLY')) {
error("File not exists ({$file})");
} else {
$errorstr = "File not exists ({$file})";
return false;
}
}
//Check the file name ends with .zip
if (!substr($file, -4) == ".zip") {
if (!defined('RESTORE_SILENTLY')) {
error("File has an incorrect extension");
} else {
$errorstr = 'File has an incorrect extension';
return false;
}
}
//Now calculate the unique_code for this restore
$backup_unique_code = time();
//Now check and create the backup dir (if it doesn't exist)
if (!defined('RESTORE_SILENTLY')) {
echo "<li>" . get_string("creatingtemporarystructures") . '</li>';
}
$status = check_and_create_backup_dir($backup_unique_code);
//Empty dir
if ($status) {
$status = clear_backup_dir($backup_unique_code);
}
//Now delete old data and directories under dataroot/temp/backup
if ($status) {
if (!defined('RESTORE_SILENTLY')) {
echo "<li>" . get_string("deletingolddata") . '</li>';
}
$status = backup_delete_old_data();
}
//Now copy he zip file to dataroot/temp/backup/backup_unique_code
if ($status) {
if (!defined('RESTORE_SILENTLY')) {
echo "<li>" . get_string("copyingzipfile") . '</li>';
}
if (!($status = backup_copy_file($file, $CFG->dataroot . "/temp/backup/" . $backup_unique_code . "/" . basename($file)))) {
if (!defined('RESTORE_SILENTLY')) {
notify("Error copying backup file. Invalid name or bad perms.");
} else {
$errorstr = "Error copying backup file. Invalid name or bad perms";
return false;
}
}
}
//Now unzip the file
if ($status) {
if (!defined('RESTORE_SILENTLY')) {
echo "<li>" . get_string("unzippingbackup") . '</li>';
}
if (!($status = restore_unzip($CFG->dataroot . "/temp/backup/" . $backup_unique_code . "/" . basename($file)))) {
if (!defined('RESTORE_SILENTLY')) {
notify("Error unzipping backup file. Invalid zip file.");
} else {
$errorstr = "Error unzipping backup file. Invalid zip file.";
return false;
}
}
}
//Check for Blackboard backups and convert
if ($status) {
require_once "{$CFG->dirroot}/backup/bb/restore_bb.php";
if (!defined('RESTORE_SILENTLY')) {
echo "<li>" . get_string("checkingforbbexport") . '</li>';
}
$status = blackboard_convert($CFG->dataroot . "/temp/backup/" . $backup_unique_code);
}
//Now check for the moodle.xml file
if ($status) {
$xml_file = $CFG->dataroot . "/temp/backup/" . $backup_unique_code . "/moodle.xml";
if (!defined('RESTORE_SILENTLY')) {
echo "<li>" . get_string("checkingbackup") . '</li>';
}
if (!($status = restore_check_moodle_file($xml_file))) {
if (!is_file($xml_file)) {
$errorstr = 'Error checking backup file. moodle.xml not found at root level of zip file.';
} else {
$errorstr = 'Error checking backup file. moodle.xml is incorrect or corrupted.';
}
if (!defined('RESTORE_SILENTLY')) {
notify($errorstr);
} else {
return false;
}
}
}
$info = "";
$course_header = "";
//Now read the info tag (all)
if ($status) {
if (!defined('RESTORE_SILENTLY')) {
echo "<li>" . get_string("readinginfofrombackup") . '</li>';
}
//Reading info from file
$info = restore_read_xml_info($xml_file);
//Reading course_header from file
$course_header = restore_read_xml_course_header($xml_file);
if (!is_object($course_header)) {
// ensure we fail if there is no course header
$course_header = false;
}
}
if (!defined('RESTORE_SILENTLY')) {
//End the main ul
echo "</ul>\n";
//End the main table
echo "</td></tr>";
echo "</table>";
}
//We compare Moodle's versions
if ($CFG->version < $info->backup_moodle_version && $status) {
$message = new object();
$message->serverversion = $CFG->version;
$message->serverrelease = $CFG->release;
$message->backupversion = $info->backup_moodle_version;
$message->backuprelease = $info->backup_moodle_release;
print_simple_box(get_string('noticenewerbackup', '', $message), "center", "70%", '', "20", "noticebox");
}
//Now we print in other table, the backup and the course it contains info
if ($info and $course_header and $status) {
//First, the course info
if (!defined('RESTORE_SILENTLY')) {
$status = restore_print_course_header($course_header);
}
//Now, the backup info
if ($status) {
if (!defined('RESTORE_SILENTLY')) {
$status = restore_print_info($info);
}
}
}
//Save course header and info into php session
if ($status) {
$SESSION->info = $info;
$SESSION->course_header = $course_header;
}
//Finally, a little form to continue
//with some hidden fields
if ($status) {
if (!defined('RESTORE_SILENTLY')) {
echo "<br /><div style='text-align:center'>";
$hidden["backup_unique_code"] = $backup_unique_code;
$hidden["launch"] = "form";
$hidden["file"] = $file;
$hidden["id"] = $id;
print_single_button("restore.php", $hidden, get_string("continue"), "post");
echo "</div>";
} else {
if (empty($noredirect)) {
// in 2.0 we must not print "Continue" redirect link here, because ppl click on it and the execution gets interrupted on next page!!!
// imo RESTORE_SILENTLY is an ugly hack :-P
$sillystr = get_string('donotclickcontinue');
redirect($CFG->wwwroot . '/backup/restore.php?backup_unique_code=' . $backup_unique_code . '&launch=form&file=' . $file . '&id=' . $id, $sillystr, 0);
} else {
return $backup_unique_code;
}
}
}
if (!$status) {
if (!defined('RESTORE_SILENTLY')) {
error("An error has ocurred");
} else {
$errorstr = "An error has occured";
// helpful! :P
return false;
}
}
return true;
}
function schedule_backup_cron()
{
global $CFG, $DB;
$status = true;
$emailpending = false;
//Check for required functions...
if (!function_exists('utf8_encode')) {
mtrace(" ERROR: You need to add XML support to your PHP installation!");
return true;
}
//Get now
$now = time();
//First of all, we have to see if the scheduled is active and detect
//that there isn't another cron running
mtrace(" Checking backup status", '...');
$backup_config = backup_get_config();
if (!isset($backup_config->backup_sche_active) || !$backup_config->backup_sche_active) {
mtrace("INACTIVE");
return true;
} else {
if (isset($backup_config->backup_sche_running) && $backup_config->backup_sche_running) {
mtrace("RUNNING");
//Now check if it's a really running task or something very old looking
//for info in backup_logs to unlock status as necessary
$timetosee = 1800;
//Half an hour looking for activity
$timeafter = time() - $timetosee;
$numofrec = $DB->count_records_select("backup_log", "time > ? AND backuptype = ?", array($timeafter, 'scheduledbackup'));
if (!$numofrec) {
$timetoseemin = $timetosee / 60;
mtrace(" No activity in last " . $timetoseemin . " minutes. Unlocking status");
} else {
mtrace(" Scheduled backup seems to be running. Execution delayed");
return true;
}
} else {
mtrace("OK");
//Mark backup_sche_running
backup_set_config("backup_sche_running", "1");
}
}
//Now we get the main admin user (we'll use his timezone, mail...)
mtrace(" Getting admin info");
$admin = get_admin();
if (!$admin) {
$status = false;
}
//Delete old_entries from backup tables
if ($status) {
mtrace(" Deleting old data");
if (!backup_delete_old_data()) {
$errorstr = "An error occurred deleting old backup data";
add_to_backup_log(time(), $preferences->backup_course, $errorstr, 'scheduledbackup');
mtrace(" " . $errorstr);
}
}
//Now we get a list of courses in the server
if ($status) {
mtrace(" Checking courses");
//First of all, we delete everything from backup tables related to deleted courses
mtrace(" Skipping deleted courses");
$skipped = 0;
if ($bckcourses = $DB->get_records('backup_courses')) {
foreach ($bckcourses as $bckcourse) {
//Search if it exists
if (!($exists = $DB->get_record('course', array('id' => $bckcourse->courseid)))) {
//Doesn't exist, so delete from backup tables
$DB->delete_records('backup_courses', array('courseid' => $bckcourse->courseid));
$DB->delete_records('backup_log', array('courseid' => $bckcourse->courseid));
$skipped++;
}
}
}
mtrace(" {$skipped} courses");
//Now process existing courses
$courses = $DB->get_records("course");
//For each course, we check (insert, update) the backup_course table
//with needed data
foreach ($courses as $course) {
if ($status) {
mtrace(" {$course->fullname}");
//We check if the course exists in backup_course
$backup_course = $DB->get_record("backup_courses", array("courseid" => $course->id));
//If it doesn't exist, create
if (!$backup_course) {
$temp_backup_course->courseid = $course->id;
$newid = $DB->insert_record("backup_courses", $temp_backup_course);
//And get it from db
$backup_course = $DB->get_record("backup_courses", array("id" => $newid));
}
//If it doesn't exist now, error
if (!$backup_course) {
mtrace(" ERROR (in backup_courses detection)");
$status = false;
continue;
}
// Skip backup of unavailable courses that have remained unmodified in a month
$skipped = false;
if (!$course->visible && $now - $course->timemodified > 31 * 24 * 60 * 60) {
//Hidden + unmodified last month
mtrace(" SKIPPING - hidden+unmodified");
$DB->set_field("backup_courses", "laststatus", "3", array("courseid" => $backup_course->courseid));
$skipped = true;
}
//Now we backup every non skipped course with nextstarttime < now
if (!$skipped && $backup_course->nextstarttime > 0 && $backup_course->nextstarttime < $now) {
//We have to send a email because we have included at least one backup
$emailpending = true;
//Only make the backup if laststatus isn't 2-UNFINISHED (uncontrolled error)
if ($backup_course->laststatus != 2) {
//Set laststarttime
$starttime = time();
$DB->set_field("backup_courses", "laststarttime", $starttime, array("courseid" => $backup_course->courseid));
//Set course status to unfinished, the process will reset it
$DB->set_field("backup_courses", "laststatus", "2", array("courseid" => $backup_course->courseid));
//Launch backup
$course_status = schedule_backup_launch_backup($course, $starttime);
//Set lastendtime
$DB->set_field("backup_courses", "lastendtime", time(), array("courseid" => $backup_course->courseid));
//Set laststatus
if ($course_status) {
$DB->set_field("backup_courses", "laststatus", "1", array("courseid" => $backup_course->courseid));
} else {
$DB->set_field("backup_courses", "laststatus", "0", array("courseid" => $backup_course->courseid));
}
}
}
//Now, calculate next execution of the course
$nextstarttime = schedule_backup_next_execution($backup_course, $backup_config, $now, $admin->timezone);
//Save it to db
$DB->set_field("backup_courses", "nextstarttime", $nextstarttime, array("courseid" => $backup_course->courseid));
//Print it to screen as necessary
$showtime = "undefined";
if ($nextstarttime > 0) {
$showtime = userdate($nextstarttime, "", $admin->timezone);
}
mtrace(" Next execution: {$showtime}");
}
}
}
//Delete old logs
if (!empty($CFG->loglifetime)) {
mtrace(" Deleting old logs");
$loglifetime = $now - $CFG->loglifetime * 86400;
$DB->delete_records_select("backup_log", "laststarttime < ?", array($loglifetime));
}
//Send email to admin if necessary
if ($emailpending) {
mtrace(" Sending email to admin");
$message = "";
//Get info about the status of courses
$count_all = $DB->count_records('backup_courses');
$count_ok = $DB->count_records('backup_courses', array('laststatus' => '1'));
$count_error = $DB->count_records('backup_courses', array('laststatus' => '0'));
$count_unfinished = $DB->count_records('backup_courses', array('laststatus' => '2'));
$count_skipped = $DB->count_records('backup_courses', array('laststatus' => '3'));
//Build the message text
//Summary
$message .= get_string('summary') . "\n";
$message .= "==================================================\n";
$message .= " " . get_string('courses') . ": " . $count_all . "\n";
$message .= " " . get_string('ok') . ": " . $count_ok . "\n";
$message .= " " . get_string('skipped') . ": " . $count_skipped . "\n";
$message .= " " . get_string('error') . ": " . $count_error . "\n";
$message .= " " . get_string('unfinished') . ": " . $count_unfinished . "\n\n";
//Reference
if ($count_error != 0 || $count_unfinished != 0) {
$message .= " " . get_string('backupfailed') . "\n\n";
$dest_url = "{$CFG->wwwroot}/{$CFG->admin}/report/backups/index.php";
$message .= " " . get_string('backuptakealook', '', $dest_url) . "\n\n";
//Set message priority
$admin->priority = 1;
//Reset unfinished to error
$DB->set_field('backup_courses', 'laststatus', '0', array('laststatus' => '2'));
} else {
$message .= " " . get_string('backupfinished') . "\n";
}
//Build the message subject
$site = get_site();
$prefix = format_string($site->shortname, true, array('context' => get_context_instance(CONTEXT_COURSE, SITEID))) . ": ";
if ($count_error != 0 || $count_unfinished != 0) {
$prefix .= "[" . strtoupper(get_string('error')) . "] ";
}
$subject = $prefix . get_string("scheduledbackupstatus");
//Send the message
$eventdata = new stdClass();
$eventdata->modulename = 'moodle';
$eventdata->userfrom = $admin;
$eventdata->userto = $admin;
$eventdata->subject = $subject;
$eventdata->fullmessage = $message;
$eventdata->fullmessageformat = FORMAT_PLAIN;
$eventdata->fullmessagehtml = '';
$eventdata->smallmessage = '';
message_send($eventdata);
}
//Everything is finished stop backup_sche_running
backup_set_config("backup_sche_running", "0");
return $status;
}
protected function prepareDir()
{
// 一時ディレクトリを作成して中身を空にする
if (!check_and_create_backup_dir($this->getUnique()) || !clear_backup_dir($this->getUnique())) {
throw new SharingCart_Exception('Preparation failure');
}
// 残っている古い(=4時間以上前の)バックアップデータを削除
if (!backup_delete_old_data()) {
throw new SharingCart_Exception('Preparation failure');
}
}
public static function restoreCourse($preferences, $session)
{
global $Out;
// the initial set of preferences should be enough to get the restore started.
// once in progress the restore will obtain the preferences from the backup file
// itself
if (!isset($preferences)) {
return null;
}
// Assumes the backup file is in the course data directory and the
// preferences are in the backup file itself.
global $CFG;
// for large files uncomment following code
//@ini_set("max_execution_time","3000");
//raise_memory_limit("192M");
$file = self::createBackupFilePath($preferences->course_id);
$file .= '/' . $preferences->backup_name;
//path to file
//Check the file exists
if (!is_file($file)) {
return false;
}
//Check the file name ends with .zip
if (!substr($file, -4) == ".zip") {
return false;
}
//Now calculate the unique_code for this restore
$backup_unique_code = $preferences->backup_unique_code;
//Now check and create the backup dir (if it doesn't exist)
$status = check_and_create_backup_dir($backup_unique_code);
//Empty dir
if ($status) {
$status = clear_backup_dir($backup_unique_code);
}
//Now delete old data and directories under dataroot/temp/backup
if ($status) {
$status = backup_delete_old_data();
}
$tempBackupPath = synch_backup_controller::createTempBackupPath($backup_unique_code);
//Now copy the zip file to dataroot/temp/backup/backup_unique_code
if ($status) {
if (!($status = backup_copy_file($file, $tempBackupPath . "/" . basename($file)))) {
// There has been a problem. Invalid name or bad perms
return false;
}
}
//Now unzip the file
if ($status) {
if (!($status = restore_unzip($tempBackupPath . "/" . basename($file)))) {
// error: Invalid zip file
return false;
}
}
//Check for Blackboard backups and convert
if ($status) {
require_once "{$CFG->dirroot}/backup/bb/restore_bb.php";
$status = blackboard_convert($tempBackupPath);
}
// backup file has now been unpacked. Retrieve the serialized preferences
$preferencesPath = $tempBackupPath . '/' . self::getPreferencesFileName();
$preferences = FileSystem::unSerializeFromFile($preferencesPath);
// Now we have the preferences from the backup we need to tailor it to our current needs
// should we be updating an existing item or creating one.
$dataItemId = SynchContentHierarchy::generateDataItemId($preferences->course_id, synch_view_controller::$TYPE_ID_COURSE);
global $SynchManager, $SynchServerController;
$itemExists = $SynchManager->getSessionItemExistsByServerId($SynchServerController->getServerId(), $session);
if (isset($itemExists) && is_array($itemExists) && in_array($dataItemId, $itemExists)) {
$preferences->restoreto = 1;
$preferences->deleting = 1;
} else {
$preferences->restoreto = 2;
}
//Now check for the moodle.xml file
if ($status) {
$xml_file = $tempBackupPath . "/moodle.xml";
if (!($status = restore_check_moodle_file($xml_file))) {
if (!is_file($xml_file)) {
//Error checking backup file. moodle.xml not found at root level of zip file
return false;
} else {
//Error checking backup file. moodle.xml is incorrect or corrupted.
return false;
}
}
}
//unpack backup file
//read contents
//Reading info from file
$info = restore_read_xml_info($xml_file);
//Reading course_header from file
$courseHeader = restore_read_xml_course_header($xml_file);
//Save course header and info into php session
if ($status) {
//$SESSION->info = $info;
//$SESSION->course_header = $course_header;
}
global $restore;
$restore = $preferences;
$message = null;
$restoreSuccess = restore_execute($preferences, $info, $courseHeader, $message);
return $restoreSuccess;
}
function schedule_backup_cron()
{
global $CFG;
$status = true;
$emailpending = false;
//Check for required functions...
if (!function_exists('utf8_encode')) {
mtrace(" ERROR: You need to add XML support to your PHP installation!");
return true;
}
//Get now
$now = time();
//First of all, we have to see if the scheduled is active and detect
//that there isn't another cron running
mtrace(" Checking backup status", '...');
$backup_config = backup_get_config();
if (!isset($backup_config->backup_sche_active) || !$backup_config->backup_sche_active) {
mtrace("INACTIVE");
return true;
} else {
if (isset($backup_config->backup_sche_running) && $backup_config->backup_sche_running) {
mtrace("RUNNING");
//Now check if it's a really running task or something very old looking
//for info in backup_logs to unlock status as necessary
$timetosee = 1800;
//Half an hour looking for activity
$timeafter = time() - $timetosee;
$numofrec = count_records_select("backup_log", "time > {$timeafter}");
if (!$numofrec) {
$timetoseemin = $timetosee / 60;
mtrace(" No activity in last " . $timetoseemin . " minutes. Unlocking status");
} else {
mtrace(" Scheduled backup seems to be running. Execution delayed");
return true;
}
} else {
mtrace("OK");
//Mark backup_sche_running
backup_set_config("backup_sche_running", "1");
}
}
//Now we get the main admin user (we'll use his timezone, mail...)
mtrace(" Getting admin info");
$admin = get_admin();
if (!$admin) {
$status = false;
}
//Delete old_entries from backup tables
if ($status) {
mtrace(" Deleting old data");
$status = backup_delete_old_data();
}
//Now we get a list of courses in the server
if ($status) {
mtrace(" Checking courses");
//First of all, we delete everything from backup tables related to deleted courses
mtrace(" Skipping deleted courses");
$skipped = 0;
if ($bckcourses = get_records('backup_courses')) {
foreach ($bckcourses as $bckcourse) {
//Search if it exists
if (!($exists = get_record('course', 'id', "{$bckcourse->courseid}"))) {
//Doesn't exist, so delete from backup tables
delete_records('backup_courses', 'courseid', "{$bckcourse->courseid}");
delete_records('backup_log', 'courseid', "{$bckcourse->courseid}");
$skipped++;
}
}
}
mtrace(" {$skipped} courses");
//Now process existing courses
$courses = get_records("course");
//For each course, we check (insert, update) the backup_course table
//with needed data
foreach ($courses as $course) {
if ($status) {
mtrace(" {$course->fullname}");
//We check if the course exists in backup_course
$backup_course = get_record("backup_courses", "courseid", $course->id);
//If it doesn't exist, create
if (!$backup_course) {
$temp_backup_course->courseid = $course->id;
$newid = insert_record("backup_courses", $temp_backup_course);
//And get it from db
$backup_course = get_record("backup_courses", "id", $newid);
}
//If it doesn't exist now, error
if (!$backup_course) {
mtrace(" ERROR (in backup_courses detection)");
$status = false;
continue;
}
// Skip courses that do not yet need backup
$skipped = !($backup_course->nextstarttime > 0 && $backup_course->nextstarttime < $now);
// Skip backup of unavailable courses that have remained unmodified in a month
if (!$skipped && !$course->visible && $now - $course->timemodified > 31 * 24 * 60 * 60) {
//Hidden + settings were unmodified last month
//Check log if there were any modifications to the course content
$sql = 'SELECT l.id FROM ' . $CFG->prefix . 'log l WHERE ' . 'l.course=' . $course->id . ' AND l.time>' . ($now - 31 * 24 * 60 * 60) . " AND lower(l.action) not like '%view%'";
$logexists = record_exists_sql($sql);
if (!$logexists) {
mtrace(" SKIPPING - hidden+unmodified");
set_field("backup_courses", "laststatus", "3", "courseid", $backup_course->courseid);
$skipped = true;
}
}
//Now we backup every non-skipped course
if (!$skipped) {
//We have to send a email because we have included at least one backup
$emailpending = true;
//Only make the backup if laststatus isn't 2-UNFINISHED (uncontrolled error)
if ($backup_course->laststatus != 2) {
//Set laststarttime
$starttime = time();
set_field("backup_courses", "laststarttime", $starttime, "courseid", $backup_course->courseid);
//Set course status to unfinished, the process will reset it
set_field("backup_courses", "laststatus", "2", "courseid", $backup_course->courseid);
//Launch backup
$course_status = schedule_backup_launch_backup($course, $starttime);
//Set lastendtime
set_field("backup_courses", "lastendtime", time(), "courseid", $backup_course->courseid);
//Set laststatus
if ($course_status) {
set_field("backup_courses", "laststatus", "1", "courseid", $backup_course->courseid);
} else {
set_field("backup_courses", "laststatus", "0", "courseid", $backup_course->courseid);
}
}
}
//Now, calculate next execution of the course
$nextstarttime = schedule_backup_next_execution($backup_course, $backup_config, $now, $admin->timezone);
//Save it to db
set_field("backup_courses", "nextstarttime", $nextstarttime, "courseid", $backup_course->courseid);
//Print it to screen as necessary
$showtime = "undefined";
if ($nextstarttime > 0) {
$showtime = userdate($nextstarttime, "", $admin->timezone);
}
mtrace(" Next execution: {$showtime}");
}
}
}
//Delete old logs
if (!empty($CFG->loglifetime)) {
mtrace(" Deleting old logs");
$loglifetime = $now - $CFG->loglifetime * 86400;
delete_records_select("backup_log", "laststarttime < '{$loglifetime}'");
}
//Send email to admin if necessary
if ($emailpending) {
mtrace(" Sending email to admin");
$message = "";
//Get info about the status of courses
$count_all = count_records('backup_courses');
$count_ok = count_records('backup_courses', 'laststatus', '1');
$count_error = count_records('backup_courses', 'laststatus', '0');
$count_unfinished = count_records('backup_courses', 'laststatus', '2');
$count_skipped = count_records('backup_courses', 'laststatus', '3');
//Build the message text
//Summary
$message .= get_string('summary') . "\n";
$message .= "==================================================\n";
$message .= " " . get_string('courses') . ": " . $count_all . "\n";
$message .= " " . get_string('ok') . ": " . $count_ok . "\n";
$message .= " " . get_string('skipped') . ": " . $count_skipped . "\n";
$message .= " " . get_string('error') . ": " . $count_error . "\n";
$message .= " " . get_string('unfinished') . ": " . $count_unfinished . "\n\n";
//Reference
if ($count_error != 0 || $count_unfinished != 0) {
$message .= " " . get_string('backupfailed') . "\n\n";
$dest_url = "{$CFG->wwwroot}/{$CFG->admin}/report/backups/index.php";
$message .= " " . get_string('backuptakealook', '', $dest_url) . "\n\n";
//Set message priority
$admin->priority = 1;
//Reset unfinished to error
set_field('backup_courses', 'laststatus', '0', 'laststatus', '2');
} else {
$message .= " " . get_string('backupfinished') . "\n";
}
//Build the message subject
$site = get_site();
$prefix = $site->shortname . ": ";
if ($count_error != 0 || $count_unfinished != 0) {
$prefix .= "[" . strtoupper(get_string('error')) . "] ";
}
$subject = $prefix . get_string("scheduledbackupstatus");
//Send the message
email_to_user($admin, $admin, $subject, $message);
}
//Everything is finished stop backup_sche_running
backup_set_config("backup_sche_running", "0");
return $status;
}