3 // This file is part of Moodle - http://moodle.org/
5 // Moodle is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
10 // Moodle is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
20 * @subpackage backup-dbops
21 * @copyright 2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
26 * Base abstract class for all the helper classes providing DB operations
28 * TODO: Finish phpdocs
30 abstract class restore_dbops {
33 * Return all the inforef.xml files to be loaded into the temp_ids table
34 * We do that by loading the controller from DB, then iterating over all the
35 * included tasks and calculating all the inforef files for them
37 public static function get_needed_inforef_files($restoreid) {
38 $rc = restore_controller_dbops::load_controller($restoreid);
39 $tasks = $rc->get_plan()->get_tasks();
41 foreach ($tasks as $task) {
42 // Calculate if the task is being included
44 // blocks, based in blocks setting and parent activity/course
45 if ($task instanceof restore_block_task) {
46 if (!$task->get_setting('blocks')) { // Blocks not included, continue
49 $parent = basename(dirname(dirname($task->get_taskbasepath())));
50 if ($parent == 'course') { // Parent is course, always included if present
53 } else { // Look for activity_included setting
54 $included = $task->get_setting_value($parent . '_included');
57 // ativities, based on included setting
58 } else if ($task instanceof restore_activity_task) {
59 $included = $task->get_setting_value('included');
61 // sections, based on included setting
62 } else if ($task instanceof restore_section_task) {
63 $included = $task->get_setting_value('included');
65 // course always included if present
66 } else if ($task instanceof restore_course_task) {
70 // If included and file exists, add it to results
72 $inforefpath = $task->get_taskbasepath() . '/inforef.xml';
73 if (file_exists($inforefpath)) {
74 $files[] = $inforefpath;
82 * Load one inforef.xml file to backup_ids table for future reference
84 public static function load_inforef_to_tempids($restoreid, $inforeffile) {
86 if (!file_exists($inforeffile)) { // Shouldn't happen ever, but...
87 throw new backup_helper_exception('missing_inforef_xml_file', $inforeffile);
89 // Let's parse, custom processor will do its work, sending info to DB
90 $xmlparser = new progressive_parser();
91 $xmlparser->set_file($inforeffile);
92 $xmlprocessor = new restore_inforef_parser_processor($restoreid);
93 $xmlparser->set_processor($xmlprocessor);
94 $xmlparser->process();
98 * Load the needed users.xml file to backup_ids table for future reference
100 public static function load_users_to_tempids($restoreid, $usersfile) {
102 if (!file_exists($usersfile)) { // Shouldn't happen ever, but...
103 throw new backup_helper_exception('missing_users_xml_file', $usersfile);
105 // Let's parse, custom processor will do its work, sending info to DB
106 $xmlparser = new progressive_parser();
107 $xmlparser->set_file($usersfile);
108 $xmlprocessor = new restore_users_parser_processor($restoreid);
109 $xmlparser->set_processor($xmlprocessor);
110 $xmlparser->process();
114 * Given one component/filearea/context and
115 * optionally one source itemname to match itemids
116 * put the corresponding files in the pool
118 public static function send_files_to_pool($basepath, $restoreid, $component, $filearea, $oldcontextid, $itemname = null) {
121 // Get new context, must exist or this will fail
122 if (!$newcontextid = self::get_backup_ids_record($restoreid, 'context', $oldcontextid)->newitemid) {
123 throw new restore_dbops_exception('unknown_context_mapping', $oldcontextid);
126 // Important: remember how files have been loaded to backup_ids_temp
127 // - info: contains the whole original object (times, names...)
128 // (all them being original ids as loaded from xml)
130 // itemname = null, we are going to match only by context, no need to use itemid (all them are 0)
131 if ($itemname == null) {
132 $sql = 'SELECT contextid, component, filearea, itemid, 0 AS newitemid, info
133 FROM {backup_files_temp}
138 $params = array($restoreid, $oldcontextid, $component, $filearea);
140 // itemname not null, going to join with backup_ids to perform the old-new mapping of itemids
142 $sql = 'SELECT f.contextid, f.component, f.filearea, f.itemid, i.newitemid, f.info
143 FROM {backup_files_temp} f
144 JOIN {backup_ids_temp} i ON i.backupid = f.backupid
145 AND i.parentitemid = f.contextid
146 AND i.itemid = f.itemid
152 $params = array($restoreid, $oldcontextid, $component, $filearea, $itemname);
155 $rs = $DB->get_recordset_sql($sql, $params);
156 $fs = get_file_storage(); // Get moodle file storage
157 $basepath = $basepath . '/files/';// Get backup file pool base
158 foreach ($rs as $rec) {
159 $file = (object)unserialize(base64_decode($rec->info));
160 // ignore root dirs (they are created automatically)
161 if ($file->filepath == '/' && $file->filename == '.') {
164 // dir found (and not root one), let's create if
165 if ($file->filename == '.') {
166 $fs->create_directory($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath);
169 // arrived here, file found
170 // Find file in backup pool
171 $backuppath = $basepath . backup_file_manager::get_content_file_location($file->contenthash);
172 if (!file_exists($backuppath)) {
173 throw new restore_dbops_exception('file_not_found_in_pool', $file);
175 if (!$fs->file_exists($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $file->filename)) {
176 $file_record = array(
177 'contextid' => $newcontextid,
178 'component' => $component,
179 'filearea' => $filearea,
180 'itemid' => $rec->newitemid,
181 'filepath' => $file->filepath,
182 'filename' => $file->filename,
183 'timecreated' => $file->timecreated,
184 'timemodified'=> $file->timemodified,
185 'author' => $file->author,
186 'license' => $file->license);
187 $fs->create_file_from_pathname($file_record, $backuppath);
194 * Given one restoreid, create in DB all the users present
195 * in backup_ids having newitemid = 0, as far as
196 * precheck_included_users() have left them there
197 * ready to be created. Also, annotate their newids
198 * once created for later reference
200 public static function create_included_users($basepath, $restoreid, $userfiles) {
203 $authcache = array(); // Cache to get some bits from authentication plugins
204 $languages = get_string_manager()->get_list_of_translations(); // Get languages for quick search later
205 $themes = get_list_of_themes(); // Get themes for quick search later
207 // Iterate over all the included users with newitemid = 0, have to create them
208 $rs = $DB->get_recordset('backup_ids_temp', array('backupid' => $restoreid, 'itemname' => 'user', 'newitemid' => 0), '', 'itemid, parentitemid');
209 foreach ($rs as $recuser) {
210 $user = (object)self::get_backup_ids_record($restoreid, 'user', $recuser->itemid)->info;
212 // if user lang doesn't exist here, use site default
213 if (!array_key_exists($user->lang, $languages)) {
214 $user->lang = $CFG->lang;
217 // if user theme isn't available on target site or they are disabled, reset theme
218 if (!empty($user->theme)) {
219 if (empty($CFG->allowuserthemes) || !in_array($user->theme, $themes)) {
224 // if user to be created has mnet auth and its mnethostid is $CFG->mnet_localhost_id
225 // that's 100% impossible as own server cannot be accesed over mnet. Change auth to email/manual
226 if ($user->auth == 'mnet' && $user->mnethostid == $CFG->mnet_localhost_id) {
227 // Respect registerauth
228 if ($CFG->registerauth == 'email') {
229 $user->auth = 'email';
231 $user->auth = 'manual';
234 unset($user->mnethosturl); // Not needed anymore
236 // Disable pictures based on global setting
237 if (!empty($CFG->disableuserimages)) {
241 // We need to analyse the AUTH field to recode it:
242 // - if the auth isn't enabled in target site, $CFG->registerauth will decide
243 // - finally, if the auth resulting isn't enabled, default to 'manual'
244 if (!is_enabled_auth($user->auth)) {
245 if ($CFG->registerauth == 'email') {
246 $user->auth = 'email';
248 $user->auth = 'manual';
251 if (!is_enabled_auth($user->auth)) { // Final auth check verify, default to manual if not enabled
252 $user->auth = 'manual';
255 // Now that we know the auth method, for users to be created without pass
256 // if password handling is internal and reset password is available
257 // we set the password to "restored" (plain text), so the login process
258 // will know how to handle that situation in order to allow the user to
259 // recover the password. MDL-20846
260 if (empty($user->password)) { // Only if restore comes without password
261 if (!array_key_exists($user->auth, $authcache)) { // Not in cache
262 $userauth = new stdClass();
263 $authplugin = get_auth_plugin($user->auth);
264 $userauth->preventpassindb = $authplugin->prevent_local_passwords();
265 $userauth->isinternal = $authplugin->is_internal();
266 $userauth->canresetpwd = $authplugin->can_reset_password();
267 $authcache[$user->auth] = $userauth;
269 $userauth = $authcache[$user->auth]; // Get from cache
272 // Most external plugins do not store passwords locally
273 if (!empty($userauth->preventpassindb)) {
274 $user->password = 'not cached';
276 // If Moodle is responsible for storing/validating pwd and reset functionality is available, mark
277 } else if ($userauth->isinternal and $userauth->canresetpwd) {
278 $user->password = 'restored';
282 // Creating new user, we must reset the policyagreed always
283 $user->policyagreed = 0;
285 // Set time created if empty
286 if (empty($user->timecreated)) {
287 $user->timecreated = time();
290 // Done, let's create the user and annotate its id
291 $newuserid = $DB->insert_record('user', $user);
292 self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, $newuserid);
293 // Let's create the user context and annotate it (we need it for sure at least for files)
294 $newuserctxid = get_context_instance(CONTEXT_USER, $newuserid)->id;
295 self::set_backup_ids_record($restoreid, 'context', $recuser->parentitemid, $newuserctxid);
297 // Process custom fields
298 if (isset($user->custom_fields)) { // if present in backup
299 foreach($user->custom_fields['custom_field'] as $udata) {
300 $udata = (object)$udata;
301 // If the profile field has data and the profile shortname-datatype is defined in server
302 if ($udata->field_data) {
303 if ($field = $DB->get_record('user_info_field', array('shortname'=>$udata->field_name, 'datatype'=>$udata->field_type))) {
304 /// Insert the user_custom_profile_field
306 $rec->userid = $newuserid;
307 $rec->fieldid = $field->id;
308 $rec->data = $udata->field_data;
309 $DB->insert_record('user_info_data', $rec);
316 if (!empty($CFG->usetags) && isset($user->tags)) { // if enabled in server and present in backup
318 foreach($user->tags['tag'] as $usertag) {
319 $usertag = (object)$usertag;
320 $tags[] = $usertag->rawname;
322 tag_set('user', $newuserid, $tags);
325 // Process preferences
326 if (isset($user->preferences)) { // if present in backup
327 foreach($user->preferences['preference'] as $preference) {
328 $preference = (object)$preference;
329 // Prepare the record and insert it
330 $preference->userid = $newuserid;
331 $status = $DB->insert_record('user_preferences', $preference);
335 // Create user files in pool (profile, icon, private) by context
336 restore_dbops::send_files_to_pool($basepath, $restoreid, 'user', 'icon', $recuser->parentitemid);
337 restore_dbops::send_files_to_pool($basepath, $restoreid, 'user', 'profile', $recuser->parentitemid);
338 if ($userfiles) { // private files only if enabled in settings
339 restore_dbops::send_files_to_pool($basepath, $restoreid, 'user', 'private', $recuser->parentitemid);
347 * Given one user object (from backup file), perform all the neccesary
348 * checks is order to decide how that user will be handled on restore.
350 * Note the function requires $user->mnethostid to be already calculated
351 * so it's caller responsibility to set it
353 * This function is used both by @restore_precheck_users() and
354 * @restore_create_users() to get consistent results in both places
357 * - one user object (from DB), if match has been found and user will be remapped
358 * - boolean true if the user needs to be created
359 * - boolean false if some conflict happened and the user cannot be handled
361 * Each test is responsible for returning its results and interrupt
362 * execution. At the end, boolean true (user needs to be created) will be
363 * returned if no test has interrupted that.
365 * Here it's the logic applied, keep it updated:
367 * If restoring users from same site backup:
368 * 1A - Normal check: If match by id and username and mnethost => ok, return target user
369 * 1B - Handle users deleted in DB and "alive" in backup file:
370 * If match by id and mnethost and user is deleted in DB and
371 * (match by username LIKE 'backup_email.%' or by non empty email = md5(username)) => ok, return target user
372 * 1C - Handle users deleted in backup file and "alive" in DB:
373 * If match by id and mnethost and user is deleted in backup file
374 * and match by email = email_without_time(backup_email) => ok, return target user
375 * 1D - Conflict: If match by username and mnethost and doesn't match by id => conflict, return false
376 * 1E - None of the above, return true => User needs to be created
378 * if restoring from another site backup (cannot match by id here, replace it by email/firstaccess combination):
379 * 2A - Normal check: If match by username and mnethost and (email or non-zero firstaccess) => ok, return target user
380 * 2B - Handle users deleted in DB and "alive" in backup file:
381 * 2B1 - If match by mnethost and user is deleted in DB and not empty email = md5(username) and
382 * (username LIKE 'backup_email.%' or non-zero firstaccess) => ok, return target user
383 * 2B2 - If match by mnethost and user is deleted in DB and
384 * username LIKE 'backup_email.%' and non-zero firstaccess) => ok, return target user
385 * (to cover situations were md5(username) wasn't implemented on delete we requiere both)
386 * 2C - Handle users deleted in backup file and "alive" in DB:
387 * If match mnethost and user is deleted in backup file
388 * and by email = email_without_time(backup_email) and non-zero firstaccess=> ok, return target user
389 * 2D - Conflict: If match by username and mnethost and not by (email or non-zero firstaccess) => conflict, return false
390 * 2E - None of the above, return true => User needs to be created
392 * Note: for DB deleted users email is stored in username field, hence we
393 * are looking there for emails. See delete_user()
394 * Note: for DB deleted users md5(username) is stored *sometimes* in the email field,
395 * hence we are looking there for usernames if not empty. See delete_user()
397 protected static function precheck_user($user, $samesite) {
400 // Handle checks from same site backups
401 if ($samesite && empty($CFG->forcedifferentsitecheckingusersonrestore)) {
403 // 1A - If match by id and username and mnethost => ok, return target user
404 if ($rec = $DB->get_record('user', array('id'=>$user->id, 'username'=>$user->username, 'mnethostid'=>$user->mnethostid))) {
405 return $rec; // Matching user found, return it
408 // 1B - Handle users deleted in DB and "alive" in backup file
409 // Note: for DB deleted users email is stored in username field, hence we
410 // are looking there for emails. See delete_user()
411 // Note: for DB deleted users md5(username) is stored *sometimes* in the email field,
412 // hence we are looking there for usernames if not empty. See delete_user()
413 // If match by id and mnethost and user is deleted in DB and
414 // match by username LIKE 'backup_email.%' or by non empty email = md5(username) => ok, return target user
415 if ($rec = $DB->get_record_sql("SELECT *
423 ".$DB->sql_isnotempty('user', 'email', false, false)."
427 array($user->id, $user->mnethostid, $user->email.'.%', md5($user->username)))) {
428 return $rec; // Matching user, deleted in DB found, return it
431 // 1C - Handle users deleted in backup file and "alive" in DB
432 // If match by id and mnethost and user is deleted in backup file
433 // and match by email = email_without_time(backup_email) => ok, return target user
434 if ($user->deleted) {
435 // Note: for DB deleted users email is stored in username field, hence we
436 // are looking there for emails. See delete_user()
437 // Trim time() from email
438 $trimemail = preg_replace('/(.*?)\.[0-9]+.?$/', '\\1', $user->username);
439 if ($rec = $DB->get_record_sql("SELECT *
444 array($user->id, $user->mnethostid, $trimemail))) {
445 return $rec; // Matching user, deleted in backup file found, return it
449 // 1D - If match by username and mnethost and doesn't match by id => conflict, return false
450 if ($rec = $DB->get_record('user', array('username'=>$user->username, 'mnethostid'=>$user->mnethostid))) {
451 if ($user->id != $rec->id) {
452 return false; // Conflict, username already exists and belongs to another id
456 // Handle checks from different site backups
459 // 2A - If match by username and mnethost and
460 // (email or non-zero firstaccess) => ok, return target user
461 if ($rec = $DB->get_record_sql("SELECT *
472 array($user->username, $user->mnethostid, $user->email, $user->firstaccess))) {
473 return $rec; // Matching user found, return it
476 // 2B - Handle users deleted in DB and "alive" in backup file
477 // Note: for DB deleted users email is stored in username field, hence we
478 // are looking there for emails. See delete_user()
479 // Note: for DB deleted users md5(username) is stored *sometimes* in the email field,
480 // hence we are looking there for usernames if not empty. See delete_user()
481 // 2B1 - If match by mnethost and user is deleted in DB and not empty email = md5(username) and
482 // (by username LIKE 'backup_email.%' or non-zero firstaccess) => ok, return target user
483 if ($rec = $DB->get_record_sql("SELECT *
487 AND ".$DB->sql_isnotempty('user', 'email', false, false)."
496 array($user->mnethostid, md5($user->username), $user->email.'.%', $user->firstaccess))) {
497 return $rec; // Matching user found, return it
500 // 2B2 - If match by mnethost and user is deleted in DB and
501 // username LIKE 'backup_email.%' and non-zero firstaccess) => ok, return target user
502 // (this covers situations where md5(username) wasn't being stored so we require both
503 // the email & non-zero firstaccess to match)
504 if ($rec = $DB->get_record_sql("SELECT *
510 AND firstaccess = ?",
511 array($user->mnethostid, $user->email.'.%', $user->firstaccess))) {
512 return $rec; // Matching user found, return it
515 // 2C - Handle users deleted in backup file and "alive" in DB
516 // If match mnethost and user is deleted in backup file
517 // and match by email = email_without_time(backup_email) and non-zero firstaccess=> ok, return target user
518 if ($user->deleted) {
519 // Note: for DB deleted users email is stored in username field, hence we
520 // are looking there for emails. See delete_user()
521 // Trim time() from email
522 $trimemail = preg_replace('/(.*?)\.[0-9]+.?$/', '\\1', $user->username);
523 if ($rec = $DB->get_record_sql("SELECT *
528 AND firstaccess = ?",
529 array($user->mnethostid, $trimemail, $user->firstaccess))) {
530 return $rec; // Matching user, deleted in backup file found, return it
534 // 2D - If match by username and mnethost and not by (email or non-zero firstaccess) => conflict, return false
535 if ($rec = $DB->get_record_sql("SELECT *
546 array($user->username, $user->mnethostid, $user->email, $user->firstaccess))) {
547 return false; // Conflict, username/mnethostid already exist and belong to another user (by email/firstaccess)
551 // Arrived here, return true as the user will need to be created and no
552 // conflicts have been found in the logic above. This covers:
553 // 1E - else => user needs to be created, return true
554 // 2E - else => user needs to be created, return true
559 * Check all the included users, deciding the action to perform
560 * for each one (mapping / creation) and returning one array
561 * of problems in case something is wrong (lack of permissions,
564 public static function precheck_included_users($restoreid, $courseid, $userid, $samesite) {
567 // To return any problem found
570 // We are going to map mnethostid, so load all the available ones
571 $mnethosts = $DB->get_records('mnet_host', array(), 'wwwroot', 'wwwroot, id');
573 // Calculate the context we are going to use for capability checking
574 $context = get_context_instance(CONTEXT_COURSE, $courseid);
576 // Calculate if we have perms to create users, by checking:
577 // to 'moodle/restore:createuser' and 'moodle/restore:userinfo'
578 // and also observe $CFG->disableusercreationonrestore
579 $cancreateuser = false;
580 if (has_capability('moodle/restore:createuser', $context, $userid) and
581 has_capability('moodle/restore:userinfo', $context, $userid) and
582 empty($CFG->disableusercreationonrestore)) { // Can create users
584 $cancreateuser = true;
587 // Iterate over all the included users
588 $rs = $DB->get_recordset('backup_ids_temp', array('backupid' => $restoreid, 'itemname' => 'user'), '', 'itemid');
589 foreach ($rs as $recuser) {
590 $user = (object)self::get_backup_ids_record($restoreid, 'user', $recuser->itemid)->info;
592 // Find the correct mnethostid for user before performing any further check
593 if (empty($user->mnethosturl) || $user->mnethosturl === $CFG->wwwroot) {
594 $user->mnethostid = $CFG->mnet_localhost_id;
596 // fast url-to-id lookups
597 if (isset($mnethosts[$user->mnethosturl])) {
598 $user->mnethostid = $mnethosts[$user->mnethosturl]->id;
600 $user->mnethostid = $CFG->mnet_localhost_id;
604 // Now, precheck that user and, based on returned results, annotate action/problem
605 $usercheck = self::precheck_user($user, $samesite);
607 if (is_object($usercheck)) { // No problem, we have found one user in DB to be mapped to
608 // Annotate it, for later process. Set newitemid to mapping user->id
609 self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, $usercheck->id);
611 } else if ($usercheck === false) { // Found conflict, report it as problem
612 $problems[] = get_string('restoreuserconflict', '', $user->username);
614 } else if ($usercheck === true) { // User needs to be created, check if we are able
615 if ($cancreateuser) { // Can create user, set newitemid to 0 so will be created later
616 self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, 0, null, (array)$user);
618 } else { // Cannot create user, report it as problem
619 $problems[] = get_string('restorecannotcreateuser', '', $user->username);
622 } else { // Shouldn't arrive here ever, something is for sure wrong. Exception
623 throw new restore_dbops_exception('restore_error_processing_user', $user->username);
631 * Process the needed users in order to create / map them
633 * Just wrap over precheck_included_users(), returning
634 * exception if any problem is found or performing the
635 * required user creations if needed
637 public static function process_included_users($restoreid, $courseid, $userid, $samesite) {
640 // Just let precheck_included_users() to do all the hard work
641 $problems = self::precheck_included_users($restoreid, $courseid, $userid, $samesite);
643 // With problems, throw exception, shouldn't happen if prechecks were originally
644 // executed, so be radical here.
645 if (!empty($problems)) {
646 throw new restore_dbops_exception('restore_problems_processing_users', null, implode(', ', $problems));
650 public static function set_backup_files_record($restoreid, $filerec) {
653 $filerec->info = base64_encode(serialize($filerec)); // Serialize the whole rec in info
654 $filerec->backupid = $restoreid;
655 $DB->insert_record('backup_files_temp', $filerec);
659 public static function set_backup_ids_record($restoreid, $itemname, $itemid, $newitemid = 0, $parentitemid = null, $info = null) {
662 // Build the basic (mandatory) record info
664 'backupid' => $restoreid,
665 'itemname' => $itemname,
668 // Build conditionally the extra record info
669 $extrarecord = array();
670 if ($newitemid != 0) {
671 $extrarecord['newitemid'] = $newitemid;
673 if ($parentitemid != null) {
674 $extrarecord['parentitemid'] = $parentitemid;
677 $extrarecord['info'] = base64_encode(serialize($info));
680 // TODO: Analyze if some static (and limited) cache by the 3 params could save us a bunch of get_record() calls
681 // Note: Sure it will! And also will improve getter
682 if (!$dbrec = $DB->get_record('backup_ids_temp', $record)) { // Need to insert the complete record
683 $DB->insert_record('backup_ids_temp', array_merge($record, $extrarecord));
685 } else { // Need to update the extra record info if there is something to
686 if (!empty($extrarecord)) {
687 $extrarecord['id'] = $dbrec->id;
688 $DB->update_record('backup_ids_temp', $extrarecord);
693 public static function get_backup_ids_record($restoreid, $itemname, $itemid) {
696 // Build the basic (mandatory) record info to look for
698 'backupid' => $restoreid,
699 'itemname' => $itemname,
702 // TODO: Analyze if some static (and limited) cache by the 3 params could save us a bunch of get_record() calls
703 if ($dbrec = $DB->get_record('backup_ids_temp', $record)) {
704 if ($dbrec->info != null) {
705 $dbrec->info = unserialize(base64_decode($dbrec->info));
713 * Exception class used by all the @dbops stuff
715 class restore_dbops_exception extends backup_exception {
717 public function __construct($errorcode, $a=NULL, $debuginfo=null) {
718 parent::__construct($errorcode, 'error', '', $a, null, $debuginfo);