| [ Index ] |
PHP Cross Reference of Unnamed Project |
[Summary view] [Print] [Text view]
1 <?php 2 3 // This file is part of Moodle - http://moodle.org/ 4 // 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. 9 // 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. 14 // 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/>. 17 18 /** 19 * @package moodlecore 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 23 */ 24 25 /** 26 * Base abstract class for all the helper classes providing DB operations 27 * 28 * TODO: Finish phpdocs 29 */ 30 abstract class restore_dbops { 31 /** 32 * Keep cache of backup records. 33 * @var array 34 * @todo MDL-25290 static should be replaced with MUC code. 35 */ 36 private static $backupidscache = array(); 37 /** 38 * Keep track of backup ids which are cached. 39 * @var array 40 * @todo MDL-25290 static should be replaced with MUC code. 41 */ 42 private static $backupidsexist = array(); 43 /** 44 * Count is expensive, so manually keeping track of 45 * backupidscache, to avoid memory issues. 46 * @var int 47 * @todo MDL-25290 static should be replaced with MUC code. 48 */ 49 private static $backupidscachesize = 2048; 50 /** 51 * Count is expensive, so manually keeping track of 52 * backupidsexist, to avoid memory issues. 53 * @var int 54 * @todo MDL-25290 static should be replaced with MUC code. 55 */ 56 private static $backupidsexistsize = 10240; 57 /** 58 * Slice backupids cache to add more data. 59 * @var int 60 * @todo MDL-25290 static should be replaced with MUC code. 61 */ 62 private static $backupidsslice = 512; 63 64 /** 65 * Return one array containing all the tasks that have been included 66 * in the restore process. Note that these tasks aren't built (they 67 * haven't steps nor ids data available) 68 */ 69 public static function get_included_tasks($restoreid) { 70 $rc = restore_controller_dbops::load_controller($restoreid); 71 $tasks = $rc->get_plan()->get_tasks(); 72 $includedtasks = array(); 73 foreach ($tasks as $key => $task) { 74 // Calculate if the task is being included 75 $included = false; 76 // blocks, based in blocks setting and parent activity/course 77 if ($task instanceof restore_block_task) { 78 if (!$task->get_setting_value('blocks')) { // Blocks not included, continue 79 continue; 80 } 81 $parent = basename(dirname(dirname($task->get_taskbasepath()))); 82 if ($parent == 'course') { // Parent is course, always included if present 83 $included = true; 84 85 } else { // Look for activity_included setting 86 $included = $task->get_setting_value($parent . '_included'); 87 } 88 89 // ativities, based on included setting 90 } else if ($task instanceof restore_activity_task) { 91 $included = $task->get_setting_value('included'); 92 93 // sections, based on included setting 94 } else if ($task instanceof restore_section_task) { 95 $included = $task->get_setting_value('included'); 96 97 // course always included if present 98 } else if ($task instanceof restore_course_task) { 99 $included = true; 100 } 101 102 // If included, add it 103 if ($included) { 104 $includedtasks[] = clone($task); // A clone is enough. In fact we only need the basepath. 105 } 106 } 107 $rc->destroy(); // Always need to destroy. 108 109 return $includedtasks; 110 } 111 112 /** 113 * Load one inforef.xml file to backup_ids table for future reference 114 * 115 * @param string $restoreid Restore id 116 * @param string $inforeffile File path 117 * @param \core\progress\base $progress Progress tracker 118 */ 119 public static function load_inforef_to_tempids($restoreid, $inforeffile, 120 \core\progress\base $progress = null) { 121 122 if (!file_exists($inforeffile)) { // Shouldn't happen ever, but... 123 throw new backup_helper_exception('missing_inforef_xml_file', $inforeffile); 124 } 125 126 // Set up progress tracking (indeterminate). 127 if (!$progress) { 128 $progress = new \core\progress\none(); 129 } 130 $progress->start_progress('Loading inforef.xml file'); 131 132 // Let's parse, custom processor will do its work, sending info to DB 133 $xmlparser = new progressive_parser(); 134 $xmlparser->set_file($inforeffile); 135 $xmlprocessor = new restore_inforef_parser_processor($restoreid); 136 $xmlparser->set_processor($xmlprocessor); 137 $xmlparser->set_progress($progress); 138 $xmlparser->process(); 139 140 // Finish progress 141 $progress->end_progress(); 142 } 143 144 /** 145 * Load the needed role.xml file to backup_ids table for future reference 146 */ 147 public static function load_roles_to_tempids($restoreid, $rolesfile) { 148 149 if (!file_exists($rolesfile)) { // Shouldn't happen ever, but... 150 throw new backup_helper_exception('missing_roles_xml_file', $rolesfile); 151 } 152 // Let's parse, custom processor will do its work, sending info to DB 153 $xmlparser = new progressive_parser(); 154 $xmlparser->set_file($rolesfile); 155 $xmlprocessor = new restore_roles_parser_processor($restoreid); 156 $xmlparser->set_processor($xmlprocessor); 157 $xmlparser->process(); 158 } 159 160 /** 161 * Precheck the loaded roles, return empty array if everything is ok, and 162 * array with 'errors', 'warnings' elements (suitable to be used by restore_prechecks) 163 * with any problem found. At the same time, store all the mapping into backup_ids_temp 164 * and also put the information into $rolemappings (controller->info), so it can be reworked later by 165 * post-precheck stages while at the same time accept modified info in the same object coming from UI 166 */ 167 public static function precheck_included_roles($restoreid, $courseid, $userid, $samesite, $rolemappings) { 168 global $DB; 169 170 $problems = array(); // To store warnings/errors 171 172 // Get loaded roles from backup_ids 173 $rs = $DB->get_recordset('backup_ids_temp', array('backupid' => $restoreid, 'itemname' => 'role'), '', 'itemid, info'); 174 foreach ($rs as $recrole) { 175 // If the rolemappings->modified flag is set, that means that we are coming from 176 // manually modified mappings (by UI), so accept those mappings an put them to backup_ids 177 if ($rolemappings->modified) { 178 $target = $rolemappings->mappings[$recrole->itemid]->targetroleid; 179 self::set_backup_ids_record($restoreid, 'role', $recrole->itemid, $target); 180 181 // Else, we haven't any info coming from UI, let's calculate the mappings, matching 182 // in multiple ways and checking permissions. Note mapping to 0 means "skip" 183 } else { 184 $role = (object)backup_controller_dbops::decode_backup_temp_info($recrole->info); 185 $match = self::get_best_assignable_role($role, $courseid, $userid, $samesite); 186 // Send match to backup_ids 187 self::set_backup_ids_record($restoreid, 'role', $recrole->itemid, $match); 188 // Build the rolemappings element for controller 189 unset($role->id); 190 unset($role->nameincourse); 191 $role->targetroleid = $match; 192 $rolemappings->mappings[$recrole->itemid] = $role; 193 // Prepare warning if no match found 194 if (!$match) { 195 $problems['warnings'][] = get_string('cannotfindassignablerole', 'backup', $role->name); 196 } 197 } 198 } 199 $rs->close(); 200 return $problems; 201 } 202 203 /** 204 * Return cached backup id's 205 * 206 * @param int $restoreid id of backup 207 * @param string $itemname name of the item 208 * @param int $itemid id of item 209 * @return array backup id's 210 * @todo MDL-25290 replace static backupids* with MUC code 211 */ 212 protected static function get_backup_ids_cached($restoreid, $itemname, $itemid) { 213 global $DB; 214 215 $key = "$itemid $itemname $restoreid"; 216 217 // If record exists in cache then return. 218 if (isset(self::$backupidsexist[$key]) && isset(self::$backupidscache[$key])) { 219 // Return a copy of cached data, to avoid any alterations in cached data. 220 return clone self::$backupidscache[$key]; 221 } 222 223 // Clean cache, if it's full. 224 if (self::$backupidscachesize <= 0) { 225 // Remove some records, to keep memory in limit. 226 self::$backupidscache = array_slice(self::$backupidscache, self::$backupidsslice, null, true); 227 self::$backupidscachesize = self::$backupidscachesize + self::$backupidsslice; 228 } 229 if (self::$backupidsexistsize <= 0) { 230 self::$backupidsexist = array_slice(self::$backupidsexist, self::$backupidsslice, null, true); 231 self::$backupidsexistsize = self::$backupidsexistsize + self::$backupidsslice; 232 } 233 234 // Retrive record from database. 235 $record = array( 236 'backupid' => $restoreid, 237 'itemname' => $itemname, 238 'itemid' => $itemid 239 ); 240 if ($dbrec = $DB->get_record('backup_ids_temp', $record)) { 241 self::$backupidsexist[$key] = $dbrec->id; 242 self::$backupidscache[$key] = $dbrec; 243 self::$backupidscachesize--; 244 self::$backupidsexistsize--; 245 return $dbrec; 246 } else { 247 return false; 248 } 249 } 250 251 /** 252 * Cache backup ids' 253 * 254 * @param int $restoreid id of backup 255 * @param string $itemname name of the item 256 * @param int $itemid id of item 257 * @param array $extrarecord extra record which needs to be updated 258 * @return void 259 * @todo MDL-25290 replace static BACKUP_IDS_* with MUC code 260 */ 261 protected static function set_backup_ids_cached($restoreid, $itemname, $itemid, $extrarecord) { 262 global $DB; 263 264 $key = "$itemid $itemname $restoreid"; 265 266 $record = array( 267 'backupid' => $restoreid, 268 'itemname' => $itemname, 269 'itemid' => $itemid, 270 ); 271 272 // If record is not cached then add one. 273 if (!isset(self::$backupidsexist[$key])) { 274 // If we have this record in db, then just update this. 275 if ($existingrecord = $DB->get_record('backup_ids_temp', $record)) { 276 self::$backupidsexist[$key] = $existingrecord->id; 277 self::$backupidsexistsize--; 278 self::update_backup_cached_record($record, $extrarecord, $key, $existingrecord); 279 } else { 280 // Add new record to cache and db. 281 $recorddefault = array ( 282 'newitemid' => 0, 283 'parentitemid' => null, 284 'info' => null); 285 $record = array_merge($record, $recorddefault, $extrarecord); 286 $record['id'] = $DB->insert_record('backup_ids_temp', $record); 287 self::$backupidsexist[$key] = $record['id']; 288 self::$backupidsexistsize--; 289 if (self::$backupidscachesize > 0) { 290 // Cache new records if we haven't got many yet. 291 self::$backupidscache[$key] = (object) $record; 292 self::$backupidscachesize--; 293 } 294 } 295 } else { 296 self::update_backup_cached_record($record, $extrarecord, $key); 297 } 298 } 299 300 /** 301 * Updates existing backup record 302 * 303 * @param array $record record which needs to be updated 304 * @param array $extrarecord extra record which needs to be updated 305 * @param string $key unique key which is used to identify cached record 306 * @param stdClass $existingrecord (optional) existing record 307 */ 308 protected static function update_backup_cached_record($record, $extrarecord, $key, $existingrecord = null) { 309 global $DB; 310 // Update only if extrarecord is not empty. 311 if (!empty($extrarecord)) { 312 $extrarecord['id'] = self::$backupidsexist[$key]; 313 $DB->update_record('backup_ids_temp', $extrarecord); 314 // Update existing cache or add new record to cache. 315 if (isset(self::$backupidscache[$key])) { 316 $record = array_merge((array)self::$backupidscache[$key], $extrarecord); 317 self::$backupidscache[$key] = (object) $record; 318 } else if (self::$backupidscachesize > 0) { 319 if ($existingrecord) { 320 self::$backupidscache[$key] = $existingrecord; 321 } else { 322 // Retrive record from database and cache updated records. 323 self::$backupidscache[$key] = $DB->get_record('backup_ids_temp', $record); 324 } 325 $record = array_merge((array)self::$backupidscache[$key], $extrarecord); 326 self::$backupidscache[$key] = (object) $record; 327 self::$backupidscachesize--; 328 } 329 } 330 } 331 332 /** 333 * Reset the ids caches completely 334 * 335 * Any destructive operation (partial delete, truncate, drop or recreate) performed 336 * with the backup_ids table must cause the backup_ids caches to be 337 * invalidated by calling this method. See MDL-33630. 338 * 339 * Note that right now, the only operation of that type is the recreation 340 * (drop & restore) of the table that may happen once the prechecks have ended. All 341 * the rest of operations are always routed via {@link set_backup_ids_record()}, 1 by 1, 342 * keeping the caches on sync. 343 * 344 * @todo MDL-25290 static should be replaced with MUC code. 345 */ 346 public static function reset_backup_ids_cached() { 347 // Reset the ids cache. 348 $cachetoadd = count(self::$backupidscache); 349 self::$backupidscache = array(); 350 self::$backupidscachesize = self::$backupidscachesize + $cachetoadd; 351 // Reset the exists cache. 352 $existstoadd = count(self::$backupidsexist); 353 self::$backupidsexist = array(); 354 self::$backupidsexistsize = self::$backupidsexistsize + $existstoadd; 355 } 356 357 /** 358 * Given one role, as loaded from XML, perform the best possible matching against the assignable 359 * roles, using different fallback alternatives (shortname, archetype, editingteacher => teacher, defaultcourseroleid) 360 * returning the id of the best matching role or 0 if no match is found 361 */ 362 protected static function get_best_assignable_role($role, $courseid, $userid, $samesite) { 363 global $CFG, $DB; 364 365 // Gather various information about roles 366 $coursectx = context_course::instance($courseid); 367 $assignablerolesshortname = get_assignable_roles($coursectx, ROLENAME_SHORT, false, $userid); 368 369 // Note: under 1.9 we had one function restore_samerole() that performed one complete 370 // matching of roles (all caps) and if match was found the mapping was availabe bypassing 371 // any assignable_roles() security. IMO that was wrong and we must not allow such 372 // mappings anymore. So we have left that matching strategy out in 2.0 373 374 // Empty assignable roles, mean no match possible 375 if (empty($assignablerolesshortname)) { 376 return 0; 377 } 378 379 // Match by shortname 380 if ($match = array_search($role->shortname, $assignablerolesshortname)) { 381 return $match; 382 } 383 384 // Match by archetype 385 list($in_sql, $in_params) = $DB->get_in_or_equal(array_keys($assignablerolesshortname)); 386 $params = array_merge(array($role->archetype), $in_params); 387 if ($rec = $DB->get_record_select('role', "archetype = ? AND id $in_sql", $params, 'id', IGNORE_MULTIPLE)) { 388 return $rec->id; 389 } 390 391 // Match editingteacher to teacher (happens a lot, from 1.9) 392 if ($role->shortname == 'editingteacher' && in_array('teacher', $assignablerolesshortname)) { 393 return array_search('teacher', $assignablerolesshortname); 394 } 395 396 // No match, return 0 397 return 0; 398 } 399 400 401 /** 402 * Process the loaded roles, looking for their best mapping or skipping 403 * Any error will cause exception. Note this is one wrapper over 404 * precheck_included_roles, that contains all the logic, but returns 405 * errors/warnings instead and is executed as part of the restore prechecks 406 */ 407 public static function process_included_roles($restoreid, $courseid, $userid, $samesite, $rolemappings) { 408 global $DB; 409 410 // Just let precheck_included_roles() to do all the hard work 411 $problems = self::precheck_included_roles($restoreid, $courseid, $userid, $samesite, $rolemappings); 412 413 // With problems of type error, throw exception, shouldn't happen if prechecks executed 414 if (array_key_exists('errors', $problems)) { 415 throw new restore_dbops_exception('restore_problems_processing_roles', null, implode(', ', $problems['errors'])); 416 } 417 } 418 419 /** 420 * Load the needed users.xml file to backup_ids table for future reference 421 * 422 * @param string $restoreid Restore id 423 * @param string $usersfile File path 424 * @param \core\progress\base $progress Progress tracker 425 */ 426 public static function load_users_to_tempids($restoreid, $usersfile, 427 \core\progress\base $progress = null) { 428 429 if (!file_exists($usersfile)) { // Shouldn't happen ever, but... 430 throw new backup_helper_exception('missing_users_xml_file', $usersfile); 431 } 432 433 // Set up progress tracking (indeterminate). 434 if (!$progress) { 435 $progress = new \core\progress\none(); 436 } 437 $progress->start_progress('Loading users into temporary table'); 438 439 // Let's parse, custom processor will do its work, sending info to DB 440 $xmlparser = new progressive_parser(); 441 $xmlparser->set_file($usersfile); 442 $xmlprocessor = new restore_users_parser_processor($restoreid); 443 $xmlparser->set_processor($xmlprocessor); 444 $xmlparser->set_progress($progress); 445 $xmlparser->process(); 446 447 // Finish progress. 448 $progress->end_progress(); 449 } 450 451 /** 452 * Load the needed questions.xml file to backup_ids table for future reference 453 */ 454 public static function load_categories_and_questions_to_tempids($restoreid, $questionsfile) { 455 456 if (!file_exists($questionsfile)) { // Shouldn't happen ever, but... 457 throw new backup_helper_exception('missing_questions_xml_file', $questionsfile); 458 } 459 // Let's parse, custom processor will do its work, sending info to DB 460 $xmlparser = new progressive_parser(); 461 $xmlparser->set_file($questionsfile); 462 $xmlprocessor = new restore_questions_parser_processor($restoreid); 463 $xmlparser->set_processor($xmlprocessor); 464 $xmlparser->process(); 465 } 466 467 /** 468 * Check all the included categories and questions, deciding the action to perform 469 * for each one (mapping / creation) and returning one array of problems in case 470 * something is wrong. 471 * 472 * There are some basic rules that the method below will always try to enforce: 473 * 474 * Rule1: Targets will be, always, calculated for *whole* question banks (a.k.a. contexid source), 475 * so, given 2 question categories belonging to the same bank, their target bank will be 476 * always the same. If not, we can be incurring into "fragmentation", leading to random/cloze 477 * problems (qtypes having "child" questions). 478 * 479 * Rule2: The 'moodle/question:managecategory' and 'moodle/question:add' capabilities will be 480 * checked before creating any category/question respectively and, if the cap is not allowed 481 * into upper contexts (system, coursecat)) but in lower ones (course), the *whole* question bank 482 * will be created there. 483 * 484 * Rule3: Coursecat question banks not existing in the target site will be created as course 485 * (lower ctx) question banks, never as "guessed" coursecat question banks base on depth or so. 486 * 487 * Rule4: System question banks will be created at system context if user has perms to do so. Else they 488 * will created as course (lower ctx) question banks (similary to rule3). In other words, course ctx 489 * if always a fallback for system and coursecat question banks. 490 * 491 * Also, there are some notes to clarify the scope of this method: 492 * 493 * Note1: This method won't create any question category nor question at all. It simply will calculate 494 * which actions (create/map) must be performed for each element and where, validating that all those 495 * actions are doable by the user executing the restore operation. Any problem found will be 496 * returned in the problems array, causing the restore process to stop with error. 497 * 498 * Note2: To decide if one question bank (all its question categories and questions) is going to be remapped, 499 * then all the categories and questions must exist in the same target bank. If able to do so, missing 500 * qcats and qs will be created (rule2). But if, at the end, something is missing, the whole question bank 501 * will be recreated at course ctx (rule1), no matter if that duplicates some categories/questions. 502 * 503 * Note3: We'll be using the newitemid column in the temp_ids table to store the action to be performed 504 * with each question category and question. newitemid = 0 means the qcat/q needs to be created and 505 * any other value means the qcat/q is mapped. Also, for qcats, parentitemid will contain the target 506 * context where the categories have to be created (but for module contexts where we'll keep the old 507 * one until the activity is created) 508 * 509 * Note4: All these "actions" will be "executed" later by {@link restore_create_categories_and_questions} 510 */ 511 public static function precheck_categories_and_questions($restoreid, $courseid, $userid, $samesite) { 512 513 $problems = array(); 514 515 // TODO: Check all qs, looking their qtypes are restorable 516 517 // Precheck all qcats and qs looking for target contexts / warnings / errors 518 list($syserr, $syswarn) = self::prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, CONTEXT_SYSTEM); 519 list($caterr, $catwarn) = self::prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, CONTEXT_COURSECAT); 520 list($couerr, $couwarn) = self::prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, CONTEXT_COURSE); 521 list($moderr, $modwarn) = self::prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, CONTEXT_MODULE); 522 523 // Acummulate and handle errors and warnings 524 $errors = array_merge($syserr, $caterr, $couerr, $moderr); 525 $warnings = array_merge($syswarn, $catwarn, $couwarn, $modwarn); 526 if (!empty($errors)) { 527 $problems['errors'] = $errors; 528 } 529 if (!empty($warnings)) { 530 $problems['warnings'] = $warnings; 531 } 532 return $problems; 533 } 534 535 /** 536 * This function will process all the question banks present in restore 537 * at some contextlevel (from CONTEXT_SYSTEM to CONTEXT_MODULE), finding 538 * the target contexts where each bank will be restored and returning 539 * warnings/errors as needed. 540 * 541 * Some contextlevels (system, coursecat), will delegate process to 542 * course level if any problem is found (lack of permissions, non-matching 543 * target context...). Other contextlevels (course, module) will 544 * cause return error if some problem is found. 545 * 546 * At the end, if no errors were found, all the categories in backup_temp_ids 547 * will be pointing (parentitemid) to the target context where they must be 548 * created later in the restore process. 549 * 550 * Note: at the time these prechecks are executed, activities haven't been 551 * created yet so, for CONTEXT_MODULE banks, we keep the old contextid 552 * in the parentitemid field. Once the activity (and its context) has been 553 * created, we'll update that context in the required qcats 554 * 555 * Caller {@link precheck_categories_and_questions} will, simply, execute 556 * this function for all the contextlevels, acting as a simple controller 557 * of warnings and errors. 558 * 559 * The function returns 2 arrays, one containing errors and another containing 560 * warnings. Both empty if no errors/warnings are found. 561 */ 562 public static function prechek_precheck_qbanks_by_level($restoreid, $courseid, $userid, $samesite, $contextlevel) { 563 global $CFG, $DB; 564 565 // To return any errors and warnings found 566 $errors = array(); 567 $warnings = array(); 568 569 // Specify which fallbacks must be performed 570 $fallbacks = array( 571 CONTEXT_SYSTEM => CONTEXT_COURSE, 572 CONTEXT_COURSECAT => CONTEXT_COURSE); 573 574 // For any contextlevel, follow this process logic: 575 // 576 // 0) Iterate over each context (qbank) 577 // 1) Iterate over each qcat in the context, matching by stamp for the found target context 578 // 2a) No match, check if user can create qcat and q 579 // 3a) User can, mark the qcat and all dependent qs to be created in that target context 580 // 3b) User cannot, check if we are in some contextlevel with fallback 581 // 4a) There is fallback, move ALL the qcats to fallback, warn. End qcat loop 582 // 4b) No fallback, error. End qcat loop. 583 // 2b) Match, mark qcat to be mapped and iterate over each q, matching by stamp and version 584 // 5a) No match, check if user can add q 585 // 6a) User can, mark the q to be created 586 // 6b) User cannot, check if we are in some contextlevel with fallback 587 // 7a) There is fallback, move ALL the qcats to fallback, warn. End qcat loop 588 // 7b) No fallback, error. End qcat loop 589 // 5b) Match, mark q to be mapped 590 591 // Get all the contexts (question banks) in restore for the given contextlevel 592 $contexts = self::restore_get_question_banks($restoreid, $contextlevel); 593 594 // 0) Iterate over each context (qbank) 595 foreach ($contexts as $contextid => $contextlevel) { 596 // Init some perms 597 $canmanagecategory = false; 598 $canadd = false; 599 // get categories in context (bank) 600 $categories = self::restore_get_question_categories($restoreid, $contextid); 601 // cache permissions if $targetcontext is found 602 if ($targetcontext = self::restore_find_best_target_context($categories, $courseid, $contextlevel)) { 603 $canmanagecategory = has_capability('moodle/question:managecategory', $targetcontext, $userid); 604 $canadd = has_capability('moodle/question:add', $targetcontext, $userid); 605 } 606 // 1) Iterate over each qcat in the context, matching by stamp for the found target context 607 foreach ($categories as $category) { 608 $matchcat = false; 609 if ($targetcontext) { 610 $matchcat = $DB->get_record('question_categories', array( 611 'contextid' => $targetcontext->id, 612 'stamp' => $category->stamp)); 613 } 614 // 2a) No match, check if user can create qcat and q 615 if (!$matchcat) { 616 // 3a) User can, mark the qcat and all dependent qs to be created in that target context 617 if ($canmanagecategory && $canadd) { 618 // Set parentitemid to targetcontext, BUT for CONTEXT_MODULE categories, where 619 // we keep the source contextid unmodified (for easier matching later when the 620 // activities are created) 621 $parentitemid = $targetcontext->id; 622 if ($contextlevel == CONTEXT_MODULE) { 623 $parentitemid = null; // null means "not modify" a.k.a. leave original contextid 624 } 625 self::set_backup_ids_record($restoreid, 'question_category', $category->id, 0, $parentitemid); 626 // Nothing else to mark, newitemid = 0 means create 627 628 // 3b) User cannot, check if we are in some contextlevel with fallback 629 } else { 630 // 4a) There is fallback, move ALL the qcats to fallback, warn. End qcat loop 631 if (array_key_exists($contextlevel, $fallbacks)) { 632 foreach ($categories as $movedcat) { 633 $movedcat->contextlevel = $fallbacks[$contextlevel]; 634 self::set_backup_ids_record($restoreid, 'question_category', $movedcat->id, 0, $contextid, $movedcat); 635 // Warn about the performed fallback 636 $warnings[] = get_string('qcategory2coursefallback', 'backup', $movedcat); 637 } 638 639 // 4b) No fallback, error. End qcat loop. 640 } else { 641 $errors[] = get_string('qcategorycannotberestored', 'backup', $category); 642 } 643 break; // out from qcat loop (both 4a and 4b), we have decided about ALL categories in context (bank) 644 } 645 646 // 2b) Match, mark qcat to be mapped and iterate over each q, matching by stamp and version 647 } else { 648 self::set_backup_ids_record($restoreid, 'question_category', $category->id, $matchcat->id, $targetcontext->id); 649 $questions = self::restore_get_questions($restoreid, $category->id); 650 651 // Collect all the questions for this category into memory so we only talk to the DB once. 652 $questioncache = $DB->get_records_sql_menu("SELECT ".$DB->sql_concat('stamp', "' '", 'version').", id 653 FROM {question} 654 WHERE category = ?", array($matchcat->id)); 655 656 foreach ($questions as $question) { 657 if (isset($questioncache[$question->stamp." ".$question->version])) { 658 $matchqid = $questioncache[$question->stamp." ".$question->version]; 659 } else { 660 $matchqid = false; 661 } 662 // 5a) No match, check if user can add q 663 if (!$matchqid) { 664 // 6a) User can, mark the q to be created 665 if ($canadd) { 666 // Nothing to mark, newitemid means create 667 668 // 6b) User cannot, check if we are in some contextlevel with fallback 669 } else { 670 // 7a) There is fallback, move ALL the qcats to fallback, warn. End qcat loo 671 if (array_key_exists($contextlevel, $fallbacks)) { 672 foreach ($categories as $movedcat) { 673 $movedcat->contextlevel = $fallbacks[$contextlevel]; 674 self::set_backup_ids_record($restoreid, 'question_category', $movedcat->id, 0, $contextid, $movedcat); 675 // Warn about the performed fallback 676 $warnings[] = get_string('question2coursefallback', 'backup', $movedcat); 677 } 678 679 // 7b) No fallback, error. End qcat loop 680 } else { 681 $errors[] = get_string('questioncannotberestored', 'backup', $question); 682 } 683 break 2; // out from qcat loop (both 7a and 7b), we have decided about ALL categories in context (bank) 684 } 685 686 // 5b) Match, mark q to be mapped 687 } else { 688 self::set_backup_ids_record($restoreid, 'question', $question->id, $matchqid); 689 } 690 } 691 } 692 } 693 } 694 695 return array($errors, $warnings); 696 } 697 698 /** 699 * Return one array of contextid => contextlevel pairs 700 * of question banks to be checked for one given restore operation 701 * ordered from CONTEXT_SYSTEM downto CONTEXT_MODULE 702 * If contextlevel is specified, then only banks corresponding to 703 * that level are returned 704 */ 705 public static function restore_get_question_banks($restoreid, $contextlevel = null) { 706 global $DB; 707 708 $results = array(); 709 $qcats = $DB->get_recordset_sql("SELECT itemid, parentitemid AS contextid, info 710 FROM {backup_ids_temp} 711 WHERE backupid = ? 712 AND itemname = 'question_category'", array($restoreid)); 713 foreach ($qcats as $qcat) { 714 // If this qcat context haven't been acummulated yet, do that 715 if (!isset($results[$qcat->contextid])) { 716 $info = backup_controller_dbops::decode_backup_temp_info($qcat->info); 717 // Filter by contextlevel if necessary 718 if (is_null($contextlevel) || $contextlevel == $info->contextlevel) { 719 $results[$qcat->contextid] = $info->contextlevel; 720 } 721 } 722 } 723 $qcats->close(); 724 // Sort by value (contextlevel from CONTEXT_SYSTEM downto CONTEXT_MODULE) 725 asort($results); 726 return $results; 727 } 728 729 /** 730 * Return one array of question_category records for 731 * a given restore operation and one restore context (question bank) 732 */ 733 public static function restore_get_question_categories($restoreid, $contextid) { 734 global $DB; 735 736 $results = array(); 737 $qcats = $DB->get_recordset_sql("SELECT itemid, info 738 FROM {backup_ids_temp} 739 WHERE backupid = ? 740 AND itemname = 'question_category' 741 AND parentitemid = ?", array($restoreid, $contextid)); 742 foreach ($qcats as $qcat) { 743 $results[$qcat->itemid] = backup_controller_dbops::decode_backup_temp_info($qcat->info); 744 } 745 $qcats->close(); 746 747 return $results; 748 } 749 750 /** 751 * Calculates the best context found to restore one collection of qcats, 752 * al them belonging to the same context (question bank), returning the 753 * target context found (object) or false 754 */ 755 public static function restore_find_best_target_context($categories, $courseid, $contextlevel) { 756 global $DB; 757 758 $targetcontext = false; 759 760 // Depending of $contextlevel, we perform different actions 761 switch ($contextlevel) { 762 // For system is easy, the best context is the system context 763 case CONTEXT_SYSTEM: 764 $targetcontext = context_system::instance(); 765 break; 766 767 // For coursecat, we are going to look for stamps in all the 768 // course categories between CONTEXT_SYSTEM and CONTEXT_COURSE 769 // (i.e. in all the course categories in the path) 770 // 771 // And only will return one "best" target context if all the 772 // matches belong to ONE and ONLY ONE context. If multiple 773 // matches are found, that means that there is some annoying 774 // qbank "fragmentation" in the categories, so we'll fallback 775 // to create the qbank at course level 776 case CONTEXT_COURSECAT: 777 // Build the array of stamps we are going to match 778 $stamps = array(); 779 foreach ($categories as $category) { 780 $stamps[] = $category->stamp; 781 } 782 $contexts = array(); 783 // Build the array of contexts we are going to look 784 $systemctx = context_system::instance(); 785 $coursectx = context_course::instance($courseid); 786 $parentctxs = $coursectx->get_parent_context_ids(); 787 foreach ($parentctxs as $parentctx) { 788 // Exclude system context 789 if ($parentctx == $systemctx->id) { 790 continue; 791 } 792 $contexts[] = $parentctx; 793 } 794 if (!empty($stamps) && !empty($contexts)) { 795 // Prepare the query 796 list($stamp_sql, $stamp_params) = $DB->get_in_or_equal($stamps); 797 list($context_sql, $context_params) = $DB->get_in_or_equal($contexts); 798 $sql = "SELECT contextid 799 FROM {question_categories} 800 WHERE stamp $stamp_sql 801 AND contextid $context_sql"; 802 $params = array_merge($stamp_params, $context_params); 803 $matchingcontexts = $DB->get_records_sql($sql, $params); 804 // Only if ONE and ONLY ONE context is found, use it as valid target 805 if (count($matchingcontexts) == 1) { 806 $targetcontext = context::instance_by_id(reset($matchingcontexts)->contextid); 807 } 808 } 809 break; 810 811 // For course is easy, the best context is the course context 812 case CONTEXT_COURSE: 813 $targetcontext = context_course::instance($courseid); 814 break; 815 816 // For module is easy, there is not best context, as far as the 817 // activity hasn't been created yet. So we return context course 818 // for them, so permission checks and friends will work. Note this 819 // case is handled by {@link prechek_precheck_qbanks_by_level} 820 // in an special way 821 case CONTEXT_MODULE: 822 $targetcontext = context_course::instance($courseid); 823 break; 824 } 825 return $targetcontext; 826 } 827 828 /** 829 * Return one array of question records for 830 * a given restore operation and one question category 831 */ 832 public static function restore_get_questions($restoreid, $qcatid) { 833 global $DB; 834 835 $results = array(); 836 $qs = $DB->get_recordset_sql("SELECT itemid, info 837 FROM {backup_ids_temp} 838 WHERE backupid = ? 839 AND itemname = 'question' 840 AND parentitemid = ?", array($restoreid, $qcatid)); 841 foreach ($qs as $q) { 842 $results[$q->itemid] = backup_controller_dbops::decode_backup_temp_info($q->info); 843 } 844 $qs->close(); 845 return $results; 846 } 847 848 /** 849 * Given one component/filearea/context and 850 * optionally one source itemname to match itemids 851 * put the corresponding files in the pool 852 * 853 * If you specify a progress reporter, it will get called once per file with 854 * indeterminate progress. 855 * 856 * @param string $basepath the full path to the root of unzipped backup file 857 * @param string $restoreid the restore job's identification 858 * @param string $component 859 * @param string $filearea 860 * @param int $oldcontextid 861 * @param int $dfltuserid default $file->user if the old one can't be mapped 862 * @param string|null $itemname 863 * @param int|null $olditemid 864 * @param int|null $forcenewcontextid explicit value for the new contextid (skip mapping) 865 * @param bool $skipparentitemidctxmatch 866 * @param \core\progress\base $progress Optional progress reporter 867 * @return array of result object 868 */ 869 public static function send_files_to_pool($basepath, $restoreid, $component, $filearea, 870 $oldcontextid, $dfltuserid, $itemname = null, $olditemid = null, 871 $forcenewcontextid = null, $skipparentitemidctxmatch = false, 872 \core\progress\base $progress = null) { 873 global $DB, $CFG; 874 875 $backupinfo = backup_general_helper::get_backup_information(basename($basepath)); 876 $includesfiles = $backupinfo->include_files; 877 878 $results = array(); 879 880 if ($forcenewcontextid) { 881 // Some components can have "forced" new contexts (example: questions can end belonging to non-standard context mappings, 882 // with questions originally at system/coursecat context in source being restored to course context in target). So we need 883 // to be able to force the new contextid 884 $newcontextid = $forcenewcontextid; 885 } else { 886 // Get new context, must exist or this will fail 887 $newcontextrecord = self::get_backup_ids_record($restoreid, 'context', $oldcontextid); 888 if (!$newcontextrecord || !$newcontextrecord->newitemid) { 889 throw new restore_dbops_exception('unknown_context_mapping', $oldcontextid); 890 } 891 $newcontextid = $newcontextrecord->newitemid; 892 } 893 894 // Sometimes it's possible to have not the oldcontextids stored into backup_ids_temp->parentitemid 895 // columns (because we have used them to store other information). This happens usually with 896 // all the question related backup_ids_temp records. In that case, it's safe to ignore that 897 // matching as far as we are always restoring for well known oldcontexts and olditemids 898 $parentitemctxmatchsql = ' AND i.parentitemid = f.contextid '; 899 if ($skipparentitemidctxmatch) { 900 $parentitemctxmatchsql = ''; 901 } 902 903 // Important: remember how files have been loaded to backup_files_temp 904 // - info: contains the whole original object (times, names...) 905 // (all them being original ids as loaded from xml) 906 907 // itemname = null, we are going to match only by context, no need to use itemid (all them are 0) 908 if ($itemname == null) { 909 $sql = "SELECT id AS bftid, contextid, component, filearea, itemid, itemid AS newitemid, info 910 FROM {backup_files_temp} 911 WHERE backupid = ? 912 AND contextid = ? 913 AND component = ? 914 AND filearea = ?"; 915 $params = array($restoreid, $oldcontextid, $component, $filearea); 916 917 // itemname not null, going to join with backup_ids to perform the old-new mapping of itemids 918 } else { 919 $sql = "SELECT f.id AS bftid, f.contextid, f.component, f.filearea, f.itemid, i.newitemid, f.info 920 FROM {backup_files_temp} f 921 JOIN {backup_ids_temp} i ON i.backupid = f.backupid 922 $parentitemctxmatchsql 923 AND i.itemid = f.itemid 924 WHERE f.backupid = ? 925 AND f.contextid = ? 926 AND f.component = ? 927 AND f.filearea = ? 928 AND i.itemname = ?"; 929 $params = array($restoreid, $oldcontextid, $component, $filearea, $itemname); 930 if ($olditemid !== null) { // Just process ONE olditemid intead of the whole itemname 931 $sql .= ' AND i.itemid = ?'; 932 $params[] = $olditemid; 933 } 934 } 935 936 $fs = get_file_storage(); // Get moodle file storage 937 $basepath = $basepath . '/files/';// Get backup file pool base 938 // Report progress before query. 939 if ($progress) { 940 $progress->progress(); 941 } 942 $rs = $DB->get_recordset_sql($sql, $params); 943 foreach ($rs as $rec) { 944 // Report progress each time around loop. 945 if ($progress) { 946 $progress->progress(); 947 } 948 949 $file = (object)backup_controller_dbops::decode_backup_temp_info($rec->info); 950 951 // ignore root dirs (they are created automatically) 952 if ($file->filepath == '/' && $file->filename == '.') { 953 continue; 954 } 955 956 // set the best possible user 957 $mappeduser = self::get_backup_ids_record($restoreid, 'user', $file->userid); 958 $mappeduserid = !empty($mappeduser) ? $mappeduser->newitemid : $dfltuserid; 959 960 // dir found (and not root one), let's create it 961 if ($file->filename == '.') { 962 $fs->create_directory($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $mappeduserid); 963 continue; 964 } 965 966 // The file record to restore. 967 $file_record = array( 968 'contextid' => $newcontextid, 969 'component' => $component, 970 'filearea' => $filearea, 971 'itemid' => $rec->newitemid, 972 'filepath' => $file->filepath, 973 'filename' => $file->filename, 974 'timecreated' => $file->timecreated, 975 'timemodified'=> $file->timemodified, 976 'userid' => $mappeduserid, 977 'source' => $file->source, 978 'author' => $file->author, 979 'license' => $file->license, 980 'sortorder' => $file->sortorder 981 ); 982 983 if (empty($file->repositoryid)) { 984 // If contenthash is empty then gracefully skip adding file. 985 if (empty($file->contenthash)) { 986 $result = new stdClass(); 987 $result->code = 'file_missing_in_backup'; 988 $result->message = sprintf('missing file (%s) contenthash in backup for component %s', $file->filename, $component); 989 $result->level = backup::LOG_WARNING; 990 $results[] = $result; 991 continue; 992 } 993 // this is a regular file, it must be present in the backup pool 994 $backuppath = $basepath . backup_file_manager::get_backup_content_file_location($file->contenthash); 995 996 // Some file types do not include the files as they should already be 997 // present. We still need to create entries into the files table. 998 if ($includesfiles) { 999 // The file is not found in the backup. 1000 if (!file_exists($backuppath)) { 1001 $results[] = self::get_missing_file_result($file); 1002 continue; 1003 } 1004 1005 // create the file in the filepool if it does not exist yet 1006 if (!$fs->file_exists($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $file->filename)) { 1007 1008 // If no license found, use default. 1009 if ($file->license == null){ 1010 $file->license = $CFG->sitedefaultlicense; 1011 } 1012 1013 $fs->create_file_from_pathname($file_record, $backuppath); 1014 } 1015 } else { 1016 // This backup does not include the files - they should be available in moodle filestorage already. 1017 1018 // Create the file in the filepool if it does not exist yet. 1019 if (!$fs->file_exists($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $file->filename)) { 1020 1021 // Even if a file has been deleted since the backup was made, the file metadata will remain in the 1022 // files table, and the file will not be moved to the trashdir. 1023 // Files are not cleared from the files table by cron until several days after deletion. 1024 if ($foundfiles = $DB->get_records('files', array('contenthash' => $file->contenthash), '', '*', 0, 1)) { 1025 // Only grab one of the foundfiles - the file content should be the same for all entries. 1026 $foundfile = reset($foundfiles); 1027 $fs->create_file_from_storedfile($file_record, $foundfile->id); 1028 } else { 1029 // A matching existing file record was not found in the database. 1030 $results[] = self::get_missing_file_result($file); 1031 continue; 1032 } 1033 } 1034 } 1035 1036 // store the the new contextid and the new itemid in case we need to remap 1037 // references to this file later 1038 $DB->update_record('backup_files_temp', array( 1039 'id' => $rec->bftid, 1040 'newcontextid' => $newcontextid, 1041 'newitemid' => $rec->newitemid), true); 1042 1043 } else { 1044 // this is an alias - we can't create it yet so we stash it in a temp 1045 // table and will let the final task to deal with it 1046 if (!$fs->file_exists($newcontextid, $component, $filearea, $rec->newitemid, $file->filepath, $file->filename)) { 1047 $info = new stdClass(); 1048 // oldfile holds the raw information stored in MBZ (including reference-related info) 1049 $info->oldfile = $file; 1050 // newfile holds the info for the new file_record with the context, user and itemid mapped 1051 $info->newfile = (object) $file_record; 1052 1053 restore_dbops::set_backup_ids_record($restoreid, 'file_aliases_queue', $file->id, 0, null, $info); 1054 } 1055 } 1056 } 1057 $rs->close(); 1058 return $results; 1059 } 1060 1061 /** 1062 * Returns suitable entry to include in log when there is a missing file. 1063 * 1064 * @param stdClass $file File definition 1065 * @return stdClass Log entry 1066 */ 1067 protected static function get_missing_file_result($file) { 1068 $result = new stdClass(); 1069 $result->code = 'file_missing_in_backup'; 1070 $result->message = 'Missing file in backup: ' . $file->filepath . $file->filename . 1071 ' (old context ' . $file->contextid . ', component ' . $file->component . 1072 ', filearea ' . $file->filearea . ', old itemid ' . $file->itemid . ')'; 1073 $result->level = backup::LOG_WARNING; 1074 return $result; 1075 } 1076 1077 /** 1078 * Given one restoreid, create in DB all the users present 1079 * in backup_ids having newitemid = 0, as far as 1080 * precheck_included_users() have left them there 1081 * ready to be created. Also, annotate their newids 1082 * once created for later reference. 1083 * 1084 * This function will start and end a new progress section in the progress 1085 * object. 1086 * 1087 * @param string $basepath Base path of unzipped backup 1088 * @param string $restoreid Restore ID 1089 * @param int $userid Default userid for files 1090 * @param \core\progress\base $progress Object used for progress tracking 1091 */ 1092 public static function create_included_users($basepath, $restoreid, $userid, 1093 \core\progress\base $progress) { 1094 global $CFG, $DB; 1095 $progress->start_progress('Creating included users'); 1096 1097 $authcache = array(); // Cache to get some bits from authentication plugins 1098 $languages = get_string_manager()->get_list_of_translations(); // Get languages for quick search later 1099 $themes = get_list_of_themes(); // Get themes for quick search later 1100 1101 // Iterate over all the included users with newitemid = 0, have to create them 1102 $rs = $DB->get_recordset('backup_ids_temp', array('backupid' => $restoreid, 'itemname' => 'user', 'newitemid' => 0), '', 'itemid, parentitemid, info'); 1103 foreach ($rs as $recuser) { 1104 $progress->progress(); 1105 $user = (object)backup_controller_dbops::decode_backup_temp_info($recuser->info); 1106 1107 // if user lang doesn't exist here, use site default 1108 if (!array_key_exists($user->lang, $languages)) { 1109 $user->lang = $CFG->lang; 1110 } 1111 1112 // if user theme isn't available on target site or they are disabled, reset theme 1113 if (!empty($user->theme)) { 1114 if (empty($CFG->allowuserthemes) || !in_array($user->theme, $themes)) { 1115 $user->theme = ''; 1116 } 1117 } 1118 1119 // if user to be created has mnet auth and its mnethostid is $CFG->mnet_localhost_id 1120 // that's 100% impossible as own server cannot be accesed over mnet. Change auth to email/manual 1121 if ($user->auth == 'mnet' && $user->mnethostid == $CFG->mnet_localhost_id) { 1122 // Respect registerauth 1123 if ($CFG->registerauth == 'email') { 1124 $user->auth = 'email'; 1125 } else { 1126 $user->auth = 'manual'; 1127 } 1128 } 1129 unset($user->mnethosturl); // Not needed anymore 1130 1131 // Disable pictures based on global setting 1132 if (!empty($CFG->disableuserimages)) { 1133 $user->picture = 0; 1134 } 1135 1136 // We need to analyse the AUTH field to recode it: 1137 // - if the auth isn't enabled in target site, $CFG->registerauth will decide 1138 // - finally, if the auth resulting isn't enabled, default to 'manual' 1139 if (!is_enabled_auth($user->auth)) { 1140 if ($CFG->registerauth == 'email') { 1141 $user->auth = 'email'; 1142 } else { 1143 $user->auth = 'manual'; 1144 } 1145 } 1146 if (!is_enabled_auth($user->auth)) { // Final auth check verify, default to manual if not enabled 1147 $user->auth = 'manual'; 1148 } 1149 1150 // Now that we know the auth method, for users to be created without pass 1151 // if password handling is internal and reset password is available 1152 // we set the password to "restored" (plain text), so the login process 1153 // will know how to handle that situation in order to allow the user to 1154 // recover the password. MDL-20846 1155 if (empty($user->password)) { // Only if restore comes without password 1156 if (!array_key_exists($user->auth, $authcache)) { // Not in cache 1157 $userauth = new stdClass(); 1158 $authplugin = get_auth_plugin($user->auth); 1159 $userauth->preventpassindb = $authplugin->prevent_local_passwords(); 1160 $userauth->isinternal = $authplugin->is_internal(); 1161 $userauth->canresetpwd = $authplugin->can_reset_password(); 1162 $authcache[$user->auth] = $userauth; 1163 } else { 1164 $userauth = $authcache[$user->auth]; // Get from cache 1165 } 1166 1167 // Most external plugins do not store passwords locally 1168 if (!empty($userauth->preventpassindb)) { 1169 $user->password = AUTH_PASSWORD_NOT_CACHED; 1170 1171 // If Moodle is responsible for storing/validating pwd and reset functionality is available, mark 1172 } else if ($userauth->isinternal and $userauth->canresetpwd) { 1173 $user->password = 'restored'; 1174 } 1175 } 1176 1177 // Creating new user, we must reset the policyagreed always 1178 $user->policyagreed = 0; 1179 1180 // Set time created if empty 1181 if (empty($user->timecreated)) { 1182 $user->timecreated = time(); 1183 } 1184 1185 // Done, let's create the user and annotate its id 1186 $newuserid = $DB->insert_record('user', $user); 1187 self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, $newuserid); 1188 // Let's create the user context and annotate it (we need it for sure at least for files) 1189 // but for deleted users that don't have a context anymore (MDL-30192). We are done for them 1190 // and nothing else (custom fields, prefs, tags, files...) will be created. 1191 if (empty($user->deleted)) { 1192 $newuserctxid = $user->deleted ? 0 : context_user::instance($newuserid)->id; 1193 self::set_backup_ids_record($restoreid, 'context', $recuser->parentitemid, $newuserctxid); 1194 1195 // Process custom fields 1196 if (isset($user->custom_fields)) { // if present in backup 1197 foreach($user->custom_fields['custom_field'] as $udata) { 1198 $udata = (object)$udata; 1199 // If the profile field has data and the profile shortname-datatype is defined in server 1200 if ($udata->field_data) { 1201 if ($field = $DB->get_record('user_info_field', array('shortname'=>$udata->field_name, 'datatype'=>$udata->field_type))) { 1202 /// Insert the user_custom_profile_field 1203 $rec = new stdClass(); 1204 $rec->userid = $newuserid; 1205 $rec->fieldid = $field->id; 1206 $rec->data = $udata->field_data; 1207 $DB->insert_record('user_info_data', $rec); 1208 } 1209 } 1210 } 1211 } 1212 1213 // Process tags 1214 if (core_tag_tag::is_enabled('core', 'user') && isset($user->tags)) { // If enabled in server and present in backup. 1215 $tags = array(); 1216 foreach($user->tags['tag'] as $usertag) { 1217 $usertag = (object)$usertag; 1218 $tags[] = $usertag->rawname; 1219 } 1220 core_tag_tag::set_item_tags('core', 'user', $newuserid, 1221 context_user::instance($newuserid), $tags); 1222 } 1223 1224 // Process preferences 1225 if (isset($user->preferences)) { // if present in backup 1226 foreach($user->preferences['preference'] as $preference) { 1227 $preference = (object)$preference; 1228 // Prepare the record and insert it 1229 $preference->userid = $newuserid; 1230 $status = $DB->insert_record('user_preferences', $preference); 1231 } 1232 } 1233 // Special handling for htmleditor which was converted to a preference. 1234 if (isset($user->htmleditor)) { 1235 if ($user->htmleditor == 0) { 1236 $preference = new stdClass(); 1237 $preference->userid = $newuserid; 1238 $preference->name = 'htmleditor'; 1239 $preference->value = 'textarea'; 1240 $status = $DB->insert_record('user_preferences', $preference); 1241 } 1242 } 1243 1244 // Create user files in pool (profile, icon, private) by context 1245 restore_dbops::send_files_to_pool($basepath, $restoreid, 'user', 'icon', 1246 $recuser->parentitemid, $userid, null, null, null, false, $progress); 1247 restore_dbops::send_files_to_pool($basepath, $restoreid, 'user', 'profile', 1248 $recuser->parentitemid, $userid, null, null, null, false, $progress); 1249 } 1250 } 1251 $rs->close(); 1252 $progress->end_progress(); 1253 } 1254 1255 /** 1256 * Given one user object (from backup file), perform all the neccesary 1257 * checks is order to decide how that user will be handled on restore. 1258 * 1259 * Note the function requires $user->mnethostid to be already calculated 1260 * so it's caller responsibility to set it 1261 * 1262 * This function is used both by @restore_precheck_users() and 1263 * @restore_create_users() to get consistent results in both places 1264 * 1265 * It returns: 1266 * - one user object (from DB), if match has been found and user will be remapped 1267 * - boolean true if the user needs to be created 1268 * - boolean false if some conflict happened and the user cannot be handled 1269 * 1270 * Each test is responsible for returning its results and interrupt 1271 * execution. At the end, boolean true (user needs to be created) will be 1272 * returned if no test has interrupted that. 1273 * 1274 * Here it's the logic applied, keep it updated: 1275 * 1276 * If restoring users from same site backup: 1277 * 1A - Normal check: If match by id and username and mnethost => ok, return target user 1278 * 1B - If restoring an 'anonymous' user (created via the 'Anonymize user information' option) try to find a 1279 * match by username only => ok, return target user MDL-31484 1280 * 1C - Handle users deleted in DB and "alive" in backup file: 1281 * If match by id and mnethost and user is deleted in DB and 1282 * (match by username LIKE 'backup_email.%' or by non empty email = md5(username)) => ok, return target user 1283 * 1D - Handle users deleted in backup file and "alive" in DB: 1284 * If match by id and mnethost and user is deleted in backup file 1285 * and match by email = email_without_time(backup_email) => ok, return target user 1286 * 1E - Conflict: If match by username and mnethost and doesn't match by id => conflict, return false 1287 * 1F - None of the above, return true => User needs to be created 1288 * 1289 * if restoring from another site backup (cannot match by id here, replace it by email/firstaccess combination): 1290 * 2A - Normal check: 1291 * 2A1 - If match by username and mnethost and (email or non-zero firstaccess) => ok, return target user 1292 * 2A2 - Exceptional handling (MDL-21912): Match "admin" username. Then, if import_general_duplicate_admin_allowed is 1293 * enabled, attempt to map the admin user to the user 'admin_[oldsiteid]' if it exists. If not, 1294 * the user 'admin_[oldsiteid]' will be created in precheck_included users 1295 * 2B - Handle users deleted in DB and "alive" in backup file: 1296 * 2B1 - If match by mnethost and user is deleted in DB and not empty email = md5(username) and 1297 * (username LIKE 'backup_email.%' or non-zero firstaccess) => ok, return target user 1298 * 2B2 - If match by mnethost and user is deleted in DB and 1299 * username LIKE 'backup_email.%' and non-zero firstaccess) => ok, return target user 1300 * (to cover situations were md5(username) wasn't implemented on delete we requiere both) 1301 * 2C - Handle users deleted in backup file and "alive" in DB: 1302 * If match mnethost and user is deleted in backup file 1303 * and by email = email_without_time(backup_email) and non-zero firstaccess=> ok, return target user 1304 * 2D - Conflict: If match by username and mnethost and not by (email or non-zero firstaccess) => conflict, return false 1305 * 2E - None of the above, return true => User needs to be created 1306 * 1307 * Note: for DB deleted users email is stored in username field, hence we 1308 * are looking there for emails. See delete_user() 1309 * Note: for DB deleted users md5(username) is stored *sometimes* in the email field, 1310 * hence we are looking there for usernames if not empty. See delete_user() 1311 */ 1312 protected static function precheck_user($user, $samesite, $siteid = null) { 1313 global $CFG, $DB; 1314 1315 // Handle checks from same site backups 1316 if ($samesite && empty($CFG->forcedifferentsitecheckingusersonrestore)) { 1317 1318 // 1A - If match by id and username and mnethost => ok, return target user 1319 if ($rec = $DB->get_record('user', array('id'=>$user->id, 'username'=>$user->username, 'mnethostid'=>$user->mnethostid))) { 1320 return $rec; // Matching user found, return it 1321 } 1322 1323 // 1B - If restoring an 'anonymous' user (created via the 'Anonymize user information' option) try to find a 1324 // match by username only => ok, return target user MDL-31484 1325 // This avoids username / id mis-match problems when restoring subsequent anonymized backups. 1326 if (backup_anonymizer_helper::is_anonymous_user($user)) { 1327 if ($rec = $DB->get_record('user', array('username' => $user->username))) { 1328 return $rec; // Matching anonymous user found - return it 1329 } 1330 } 1331 1332 // 1C - Handle users deleted in DB and "alive" in backup file 1333 // Note: for DB deleted users email is stored in username field, hence we 1334 // are looking there for emails. See delete_user() 1335 // Note: for DB deleted users md5(username) is stored *sometimes* in the email field, 1336 // hence we are looking there for usernames if not empty. See delete_user() 1337 // If match by id and mnethost and user is deleted in DB and 1338 // match by username LIKE 'backup_email.%' or by non empty email = md5(username) => ok, return target user 1339 if ($rec = $DB->get_record_sql("SELECT * 1340 FROM {user} u 1341 WHERE id = ? 1342 AND mnethostid = ? 1343 AND deleted = 1 1344 AND ( 1345 UPPER(username) LIKE UPPER(?) 1346 OR ( 1347 ".$DB->sql_isnotempty('user', 'email', false, false)." 1348 AND email = ? 1349 ) 1350 )", 1351 array($user->id, $user->mnethostid, $user->email.'.%', md5($user->username)))) { 1352 return $rec; // Matching user, deleted in DB found, return it 1353 } 1354 1355 // 1D - Handle users deleted in backup file and "alive" in DB 1356 // If match by id and mnethost and user is deleted in backup file 1357 // and match by email = email_without_time(backup_email) => ok, return target user 1358 if ($user->deleted) { 1359 // Note: for DB deleted users email is stored in username field, hence we 1360 // are looking there for emails. See delete_user() 1361 // Trim time() from email 1362 $trimemail = preg_replace('/(.*?)\.[0-9]+.?$/', '\\1', $user->username); 1363 if ($rec = $DB->get_record_sql("SELECT * 1364 FROM {user} u 1365 WHERE id = ? 1366 AND mnethostid = ? 1367 AND UPPER(email) = UPPER(?)", 1368 array($user->id, $user->mnethostid, $trimemail))) { 1369 return $rec; // Matching user, deleted in backup file found, return it 1370 } 1371 } 1372 1373 // 1E - If match by username and mnethost and doesn't match by id => conflict, return false 1374 if ($rec = $DB->get_record('user', array('username'=>$user->username, 'mnethostid'=>$user->mnethostid))) { 1375 if ($user->id != $rec->id) { 1376 return false; // Conflict, username already exists and belongs to another id 1377 } 1378 } 1379 1380 // Handle checks from different site backups 1381 } else { 1382 1383 // 2A1 - If match by username and mnethost and 1384 // (email or non-zero firstaccess) => ok, return target user 1385 if ($rec = $DB->get_record_sql("SELECT * 1386 FROM {user} u 1387 WHERE username = ? 1388 AND mnethostid = ? 1389 AND ( 1390 UPPER(email) = UPPER(?) 1391 OR ( 1392 firstaccess != 0 1393 AND firstaccess = ? 1394 ) 1395 )", 1396 array($user->username, $user->mnethostid, $user->email, $user->firstaccess))) { 1397 return $rec; // Matching user found, return it 1398 } 1399 1400 // 2A2 - If we're allowing conflicting admins, attempt to map user to admin_[oldsiteid]. 1401 if (get_config('backup', 'import_general_duplicate_admin_allowed') && $user->username === 'admin' && $siteid 1402 && $user->mnethostid == $CFG->mnet_localhost_id) { 1403 if ($rec = $DB->get_record('user', array('username' => 'admin_' . $siteid))) { 1404 return $rec; 1405 } 1406 } 1407 1408 // 2B - Handle users deleted in DB and "alive" in backup file 1409 // Note: for DB deleted users email is stored in username field, hence we 1410 // are looking there for emails. See delete_user() 1411 // Note: for DB deleted users md5(username) is stored *sometimes* in the email field, 1412 // hence we are looking there for usernames if not empty. See delete_user() 1413 // 2B1 - If match by mnethost and user is deleted in DB and not empty email = md5(username) and 1414 // (by username LIKE 'backup_email.%' or non-zero firstaccess) => ok, return target user 1415 if ($rec = $DB->get_record_sql("SELECT * 1416 FROM {user} u 1417 WHERE mnethostid = ? 1418 AND deleted = 1 1419 AND ".$DB->sql_isnotempty('user', 'email', false, false)." 1420 AND email = ? 1421 AND ( 1422 UPPER(username) LIKE UPPER(?) 1423 OR ( 1424 firstaccess != 0 1425 AND firstaccess = ? 1426 ) 1427 )", 1428 array($user->mnethostid, md5($user->username), $user->email.'.%', $user->firstaccess))) { 1429 return $rec; // Matching user found, return it 1430 } 1431 1432 // 2B2 - If match by mnethost and user is deleted in DB and 1433 // username LIKE 'backup_email.%' and non-zero firstaccess) => ok, return target user 1434 // (this covers situations where md5(username) wasn't being stored so we require both 1435 // the email & non-zero firstaccess to match) 1436 if ($rec = $DB->get_record_sql("SELECT * 1437 FROM {user} u 1438 WHERE mnethostid = ? 1439 AND deleted = 1 1440 AND UPPER(username) LIKE UPPER(?) 1441 AND firstaccess != 0 1442 AND firstaccess = ?", 1443 array($user->mnethostid, $user->email.'.%', $user->firstaccess))) { 1444 return $rec; // Matching user found, return it 1445 } 1446 1447 // 2C - Handle users deleted in backup file and "alive" in DB 1448 // If match mnethost and user is deleted in backup file 1449 // and match by email = email_without_time(backup_email) and non-zero firstaccess=> ok, return target user 1450 if ($user->deleted) { 1451 // Note: for DB deleted users email is stored in username field, hence we 1452 // are looking there for emails. See delete_user() 1453 // Trim time() from email 1454 $trimemail = preg_replace('/(.*?)\.[0-9]+.?$/', '\\1', $user->username); 1455 if ($rec = $DB->get_record_sql("SELECT * 1456 FROM {user} u 1457 WHERE mnethostid = ? 1458 AND UPPER(email) = UPPER(?) 1459 AND firstaccess != 0 1460 AND firstaccess = ?", 1461 array($user->mnethostid, $trimemail, $user->firstaccess))) { 1462 return $rec; // Matching user, deleted in backup file found, return it 1463 } 1464 } 1465 1466 // 2D - If match by username and mnethost and not by (email or non-zero firstaccess) => conflict, return false 1467 if ($rec = $DB->get_record_sql("SELECT * 1468 FROM {user} u 1469 WHERE username = ? 1470 AND mnethostid = ? 1471 AND NOT ( 1472 UPPER(email) = UPPER(?) 1473 OR ( 1474 firstaccess != 0 1475 AND firstaccess = ? 1476 ) 1477 )", 1478 array($user->username, $user->mnethostid, $user->email, $user->firstaccess))) { 1479 return false; // Conflict, username/mnethostid already exist and belong to another user (by email/firstaccess) 1480 } 1481 } 1482 1483 // Arrived here, return true as the user will need to be created and no 1484 // conflicts have been found in the logic above. This covers: 1485 // 1E - else => user needs to be created, return true 1486 // 2E - else => user needs to be created, return true 1487 return true; 1488 } 1489 1490 /** 1491 * Check all the included users, deciding the action to perform 1492 * for each one (mapping / creation) and returning one array 1493 * of problems in case something is wrong (lack of permissions, 1494 * conficts) 1495 * 1496 * @param string $restoreid Restore id 1497 * @param int $courseid Course id 1498 * @param int $userid User id 1499 * @param bool $samesite True if restore is to same site 1500 * @param \core\progress\base $progress Progress reporter 1501 */ 1502 public static function precheck_included_users($restoreid, $courseid, $userid, $samesite, 1503 \core\progress\base $progress) { 1504 global $CFG, $DB; 1505 1506 // To return any problem found 1507 $problems = array(); 1508 1509 // We are going to map mnethostid, so load all the available ones 1510 $mnethosts = $DB->get_records('mnet_host', array(), 'wwwroot', 'wwwroot, id'); 1511 1512 // Calculate the context we are going to use for capability checking 1513 $context = context_course::instance($courseid); 1514 1515 // TODO: Some day we must kill this dependency and change the process 1516 // to pass info around without loading a controller copy. 1517 // When conflicting users are detected we may need original site info. 1518 $rc = restore_controller_dbops::load_controller($restoreid); 1519 $restoreinfo = $rc->get_info(); 1520 $rc->destroy(); // Always need to destroy. 1521 1522 // Calculate if we have perms to create users, by checking: 1523 // to 'moodle/restore:createuser' and 'moodle/restore:userinfo' 1524 // and also observe $CFG->disableusercreationonrestore 1525 $cancreateuser = false; 1526 if (has_capability('moodle/restore:createuser', $context, $userid) and 1527 has_capability('moodle/restore:userinfo', $context, $userid) and 1528 empty($CFG->disableusercreationonrestore)) { // Can create users 1529 1530 $cancreateuser = true; 1531 } 1532 1533 // Prepare for reporting progress. 1534 $conditions = array('backupid' => $restoreid, 'itemname' => 'user'); 1535 $max = $DB->count_records('backup_ids_temp', $conditions); 1536 $done = 0; 1537 $progress->start_progress('Checking users', $max); 1538 1539 // Iterate over all the included users 1540 $rs = $DB->get_recordset('backup_ids_temp', $conditions, '', 'itemid, info'); 1541 foreach ($rs as $recuser) { 1542 $user = (object)backup_controller_dbops::decode_backup_temp_info($recuser->info); 1543 1544 // Find the correct mnethostid for user before performing any further check 1545 if (empty($user->mnethosturl) || $user->mnethosturl === $CFG->wwwroot) { 1546 $user->mnethostid = $CFG->mnet_localhost_id; 1547 } else { 1548 // fast url-to-id lookups 1549 if (isset($mnethosts[$user->mnethosturl])) { 1550 $user->mnethostid = $mnethosts[$user->mnethosturl]->id; 1551 } else { 1552 $user->mnethostid = $CFG->mnet_localhost_id; 1553 } 1554 } 1555 1556 // Now, precheck that user and, based on returned results, annotate action/problem 1557 $usercheck = self::precheck_user($user, $samesite, $restoreinfo->original_site_identifier_hash); 1558 1559 if (is_object($usercheck)) { // No problem, we have found one user in DB to be mapped to 1560 // Annotate it, for later process. Set newitemid to mapping user->id 1561 self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, $usercheck->id); 1562 1563 } else if ($usercheck === false) { // Found conflict, report it as problem 1564 if (!get_config('backup', 'import_general_duplicate_admin_allowed')) { 1565 $problems[] = get_string('restoreuserconflict', '', $user->username); 1566 } else if ($user->username == 'admin') { 1567 if (!$cancreateuser) { 1568 $problems[] = get_string('restorecannotcreateuser', '', $user->username); 1569 } 1570 if ($user->mnethostid != $CFG->mnet_localhost_id) { 1571 $problems[] = get_string('restoremnethostidmismatch', '', $user->username); 1572 } 1573 if (!$problems) { 1574 // Duplicate admin allowed, append original site idenfitier to username. 1575 $user->username .= '_' . $restoreinfo->original_site_identifier_hash; 1576 self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, 0, null, (array)$user); 1577 } 1578 } 1579 1580 } else if ($usercheck === true) { // User needs to be created, check if we are able 1581 if ($cancreateuser) { // Can create user, set newitemid to 0 so will be created later 1582 self::set_backup_ids_record($restoreid, 'user', $recuser->itemid, 0, null, (array)$user); 1583 1584 } else { // Cannot create user, report it as problem 1585 $problems[] = get_string('restorecannotcreateuser', '', $user->username); 1586 } 1587 1588 } else { // Shouldn't arrive here ever, something is for sure wrong. Exception 1589 throw new restore_dbops_exception('restore_error_processing_user', $user->username); 1590 } 1591 $done++; 1592 $progress->progress($done); 1593 } 1594 $rs->close(); 1595 $progress->end_progress(); 1596 return $problems; 1597 } 1598 1599 /** 1600 * Process the needed users in order to decide 1601 * which action to perform with them (create/map) 1602 * 1603 * Just wrap over precheck_included_users(), returning 1604 * exception if any problem is found 1605 * 1606 * @param string $restoreid Restore id 1607 * @param int $courseid Course id 1608 * @param int $userid User id 1609 * @param bool $samesite True if restore is to same site 1610 * @param \core\progress\base $progress Optional progress tracker 1611 */ 1612 public static function process_included_users($restoreid, $courseid, $userid, $samesite, 1613 \core\progress\base $progress = null) { 1614 global $DB; 1615 1616 // Just let precheck_included_users() to do all the hard work 1617 $problems = self::precheck_included_users($restoreid, $courseid, $userid, $samesite, $progress); 1618 1619 // With problems, throw exception, shouldn't happen if prechecks were originally 1620 // executed, so be radical here. 1621 if (!empty($problems)) { 1622 throw new restore_dbops_exception('restore_problems_processing_users', null, implode(', ', $problems)); 1623 } 1624 } 1625 1626 /** 1627 * Process the needed question categories and questions 1628 * to check all them, deciding about the action to perform 1629 * (create/map) and target. 1630 * 1631 * Just wrap over precheck_categories_and_questions(), returning 1632 * exception if any problem is found 1633 */ 1634 public static function process_categories_and_questions($restoreid, $courseid, $userid, $samesite) { 1635 global $DB; 1636 1637 // Just let precheck_included_users() to do all the hard work 1638 $problems = self::precheck_categories_and_questions($restoreid, $courseid, $userid, $samesite); 1639 1640 // With problems of type error, throw exception, shouldn't happen if prechecks were originally 1641 // executed, so be radical here. 1642 if (array_key_exists('errors', $problems)) { 1643 throw new restore_dbops_exception('restore_problems_processing_questions', null, implode(', ', $problems['errors'])); 1644 } 1645 } 1646 1647 public static function set_backup_files_record($restoreid, $filerec) { 1648 global $DB; 1649 1650 // Store external files info in `info` field 1651 $filerec->info = backup_controller_dbops::encode_backup_temp_info($filerec); // Encode the whole record into info. 1652 $filerec->backupid = $restoreid; 1653 $DB->insert_record('backup_files_temp', $filerec); 1654 } 1655 1656 public static function set_backup_ids_record($restoreid, $itemname, $itemid, $newitemid = 0, $parentitemid = null, $info = null) { 1657 // Build conditionally the extra record info 1658 $extrarecord = array(); 1659 if ($newitemid != 0) { 1660 $extrarecord['newitemid'] = $newitemid; 1661 } 1662 if ($parentitemid != null) { 1663 $extrarecord['parentitemid'] = $parentitemid; 1664 } 1665 if ($info != null) { 1666 $extrarecord['info'] = backup_controller_dbops::encode_backup_temp_info($info); 1667 } 1668 1669 self::set_backup_ids_cached($restoreid, $itemname, $itemid, $extrarecord); 1670 } 1671 1672 public static function get_backup_ids_record($restoreid, $itemname, $itemid) { 1673 $dbrec = self::get_backup_ids_cached($restoreid, $itemname, $itemid); 1674 1675 // We must test if info is a string, as the cache stores info in object form. 1676 if ($dbrec && isset($dbrec->info) && is_string($dbrec->info)) { 1677 $dbrec->info = backup_controller_dbops::decode_backup_temp_info($dbrec->info); 1678 } 1679 1680 return $dbrec; 1681 } 1682 1683 /** 1684 * Given on courseid, fullname and shortname, calculate the correct fullname/shortname to avoid dupes 1685 */ 1686 public static function calculate_course_names($courseid, $fullname, $shortname) { 1687 global $CFG, $DB; 1688 1689 $currentfullname = ''; 1690 $currentshortname = ''; 1691 $counter = 0; 1692 // Iteratere while the name exists 1693 do { 1694 if ($counter) { 1695 $suffixfull = ' ' . get_string('copyasnoun') . ' ' . $counter; 1696 $suffixshort = '_' . $counter; 1697 } else { 1698 $suffixfull = ''; 1699 $suffixshort = ''; 1700 } 1701 $currentfullname = $fullname.$suffixfull; 1702 $currentshortname = substr($shortname, 0, 100 - strlen($suffixshort)).$suffixshort; // < 100cc 1703 $coursefull = $DB->get_record_select('course', 'fullname = ? AND id != ?', 1704 array($currentfullname, $courseid), '*', IGNORE_MULTIPLE); 1705 $courseshort = $DB->get_record_select('course', 'shortname = ? AND id != ?', array($currentshortname, $courseid)); 1706 $counter++; 1707 } while ($coursefull || $courseshort); 1708 1709 // Return results 1710 return array($currentfullname, $currentshortname); 1711 } 1712 1713 /** 1714 * For the target course context, put as many custom role names as possible 1715 */ 1716 public static function set_course_role_names($restoreid, $courseid) { 1717 global $DB; 1718 1719 // Get the course context 1720 $coursectx = context_course::instance($courseid); 1721 // Get all the mapped roles we have 1722 $rs = $DB->get_recordset('backup_ids_temp', array('backupid' => $restoreid, 'itemname' => 'role'), '', 'itemid, info, newitemid'); 1723 foreach ($rs as $recrole) { 1724 $info = backup_controller_dbops::decode_backup_temp_info($recrole->info); 1725 // If it's one mapped role and we have one name for it 1726 if (!empty($recrole->newitemid) && !empty($info['nameincourse'])) { 1727 // If role name doesn't exist, add it 1728 $rolename = new stdclass(); 1729 $rolename->roleid = $recrole->newitemid; 1730 $rolename->contextid = $coursectx->id; 1731 if (!$DB->record_exists('role_names', (array)$rolename)) { 1732 $rolename->name = $info['nameincourse']; 1733 $DB->insert_record('role_names', $rolename); 1734 } 1735 } 1736 } 1737 $rs->close(); 1738 } 1739 1740 /** 1741 * Creates a skeleton record within the database using the passed parameters 1742 * and returns the new course id. 1743 * 1744 * @global moodle_database $DB 1745 * @param string $fullname 1746 * @param string $shortname 1747 * @param int $categoryid 1748 * @return int The new course id 1749 */ 1750 public static function create_new_course($fullname, $shortname, $categoryid) { 1751 global $DB; 1752 $category = $DB->get_record('course_categories', array('id'=>$categoryid), '*', MUST_EXIST); 1753 1754 $course = new stdClass; 1755 $course->fullname = $fullname; 1756 $course->shortname = $shortname; 1757 $course->category = $category->id; 1758 $course->sortorder = 0; 1759 $course->timecreated = time(); 1760 $course->timemodified = $course->timecreated; 1761 // forcing skeleton courses to be hidden instead of going by $category->visible , until MDL-27790 is resolved. 1762 $course->visible = 0; 1763 1764 $courseid = $DB->insert_record('course', $course); 1765 1766 $category->coursecount++; 1767 $DB->update_record('course_categories', $category); 1768 1769 return $courseid; 1770 } 1771 1772 /** 1773 * Deletes all of the content associated with the given course (courseid) 1774 * @param int $courseid 1775 * @param array $options 1776 * @return bool True for success 1777 */ 1778 public static function delete_course_content($courseid, array $options = null) { 1779 return remove_course_contents($courseid, false, $options); 1780 } 1781 } 1782 1783 /* 1784 * Exception class used by all the @dbops stuff 1785 */ 1786 class restore_dbops_exception extends backup_exception { 1787 1788 public function __construct($errorcode, $a=NULL, $debuginfo=null) { 1789 parent::__construct($errorcode, 'error', '', $a, null, $debuginfo); 1790 } 1791 }
title
Description
Body
title
Description
Body
title
Description
Body
title
Body
| Generated: Thu Aug 11 10:00:09 2016 | Cross-referenced by PHPXref 0.7.1 |