mod/data/restorelib.php

   1 <?php // $Id
   2 //This php script contains all the stuff to backup/restore data mod
   3
   4     //This is the "graphical" structure of the data mod:
   5     //
   6     //                     data
   7     //                    (CL,pk->id)
   8     //                        |
   9     //                        |
  10     //                        |
  11     //      ---------------------------------------------------------------------------------
  12     //      |                                                                               |
  13     //data_records (UL,pk->id, fk->data)                                      data_fields (pk->id, fk->data)
  14     //               |                                                                      |
  15     //               |                                                                      |
  16     //     -----------------------------------------------------------------------------    |
  17     //     |                                  |                                        |    |
  18     //data_ratings(fk->recordid, pk->id) data_comments (fk->recordid, pk->id)          |    |
  19     //                                                                  data_content(pk->id, fk->recordid, fk->fieldid)
  20     //
  21     //
  22     //
  23     // Meaning: pk->primary key field of the table
  24     //          fk->foreign key to link with parent
  25     //          nt->nested field (recursive data)
  26     //          CL->course level info
  27     //          UL->user level info
  28     //          files->table may have files)
  29     //
  30     //-----------------------------------------------------------
  31
  32     //Backup data files because we've selected to backup user info
  33     //and files are user info's level
  34
  35 $fieldids = array();    //array in the format of $fieldids[$oldid]=$newid. This is needed because of double dependencies of multiple tables.
  36
  37
  38     //Return a content encoded to support interactivities linking. Every module
  39 function data_restore_mods($mod,$restore) {
  40
  41     global $CFG;
  42
  43     $status = true;
  44
  45     $data = backup_getid($restore->backup_unique_code,$mod->modtype,$mod->id);
  46
  47     if ($data) {
  48         //Now get completed xmlized object
  49         $info = $data->info;
  50         // if necessary, write to restorelog and adjust date/time fields
  51         if ($restore->course_startdateoffset) {
  52             restore_log_date_changes('Database', $restore, $info['MOD']['#'], array('TIMEAVAILABLEFROM', 'TIMEAVAILABLETO','TIMEVIEWFROM', 'TIMEVIEWTO'));
  53         }
  54         //traverse_xmlize($info);                                                                     //Debug
  55         //print_object ($GLOBALS['traverse_array']);                                                  //Debug
  56         //$GLOBALS['traverse_array']="";                                                              //Debug
  57
  58         $database->course = $restore->course_id;
  59
  60         $database->name = backup_todb($info['MOD']['#']['NAME']['0']['#']);
  61         $database->intro = backup_todb($info['MOD']['#']['INTRO']['0']['#']);
  62         // Only relevant for restoring backups from 1.6 in a 1.7 install.
  63         if (isset($info['MOD']['#']['RATINGS']['0']['#'])) {
  64             $database->ratings = backup_todb($info['MOD']['#']['RATINGS']['0']['#']);
  65         }
  66         $database->comments = backup_todb($info['MOD']['#']['COMMENTS']['0']['#']);
  67         $database->timeavailablefrom = backup_todb($info['MOD']['#']['TIMEAVAILABLEFROM']['0']['#']);
  68         $database->timeavailableto = backup_todb($info['MOD']['#']['TIMEAVAILABLETO']['0']['#']);
  69         $database->timeviewfrom = backup_todb($info['MOD']['#']['TIMEVIEWFROM']['0']['#']);
  70         $database->timeviewto = backup_todb($info['MOD']['#']['TIMEVIEWTO']['0']['#']);
  71         // Only relevant for restoring backups from 1.6 in a 1.7 install.
  72         if (isset($info['MOD']['#']['PARTICIPANTS']['0']['#'])) {
  73             $database->participants = backup_todb($info['MOD']['#']['PARTICIPANTS']['0']['#']);
  74         }
  75         $database->requiredentries = backup_todb($info['MOD']['#']['REQUIREDENTRIES']['0']['#']);
  76         $database->requiredentriestoview = backup_todb($info['MOD']['#']['REQUIREDENTRIESTOVIEW']['0']['#']);
  77         $database->maxentries = backup_todb($info['MOD']['#']['MAXENTRIES']['0']['#']);
  78         $database->rssarticles = backup_todb($info['MOD']['#']['RSSARTICLES']['0']['#']);
  79         $database->singletemplate = backup_todb($info['MOD']['#']['SINGLETEMPLATE']['0']['#']);
  80         $database->listtemplate = backup_todb($info['MOD']['#']['LISTTEMPLATE']['0']['#']);
  81         $database->listtemplateheader = backup_todb($info['MOD']['#']['LISTTEMPLATEHEADER']['0']['#']);
  82         $database->listtemplatefooter = backup_todb($info['MOD']['#']['LISTTEMPLATEFOOTER']['0']['#']);
  83         $database->addtemplate = backup_todb($info['MOD']['#']['ADDTEMPLATE']['0']['#']);
  84         $database->rsstemplate = backup_todb($info['MOD']['#']['RSSTEMPLATE']['0']['#']);
  85         $database->rsstitletemplate = backup_todb($info['MOD']['#']['RSSTITLETEMPLATE']['0']['#']);
  86         $database->csstemplate = backup_todb($info['MOD']['#']['CSSTEMPLATE']['0']['#']);
  87         $database->jstemplate = backup_todb($info['MOD']['#']['JSTEMPLATE']['0']['#']);
  88         $database->approval = backup_todb($info['MOD']['#']['APPROVAL']['0']['#']);
  89         $database->scale = backup_todb($info['MOD']['#']['SCALE']['0']['#']);
  90         $database->assessed = backup_todb($info['MOD']['#']['ASSESSED']['0']['#']);
  91         // Only relevant for restoring backups from 1.6 in a 1.7 install.
  92         if (isset($info['MOD']['#']['ASSESSPUBLIC']['0']['#'])) {
  93             $database->assesspublic = backup_todb($info['MOD']['#']['ASSESSPUBLIC']['0']['#']);
  94         }
  95         $database->defaultsort = backup_todb($info['MOD']['#']['DEFAULTSORT']['0']['#']);
  96         $database->defaultsortdir = backup_todb($info['MOD']['#']['DEFAULTSORTDIR']['0']['#']);
  97         $database->editany = backup_todb($info['MOD']['#']['EDITANY']['0']['#']);
  98         $database->notification = backup_todb($info['MOD']['#']['NOTIFICATION']['0']['#']);
  99
 100         $newid = insert_record ('data', $database);
 101
 102         //Do some output
 103         if (!defined('RESTORE_SILENTLY')) {
 104             echo "<li>".get_string("modulename","data")." \"".format_string(stripslashes($database->name),true)."\"</li>";
 105         }
 106
 107         if ($newid) {
 108             //We have the newid, update backup_ids
 109             backup_putid($restore->backup_unique_code,$mod->modtype,
 110                              $mod->id, $newid);
 111             //Now check if want to restore user data and do it.
 112             if (function_exists('restore_userdata_selected')) {
 113                 // Moodle 1.6
 114                 $restore_userdata_selected = restore_userdata_selected($restore, 'data', $mod->id);
 115             } else {
 116                 // Moodle 1.5
 117                 $restore_userdata_selected = $restore->mods['data']->userinfo;
 118             }
 119
 120             //Restore data_fields first!!! need to hold an array of [oldid]=>newid due to double dependencies
 121             $status = $status and data_fields_restore_mods ($mod->id, $newid, $info, $restore);
 122
 123             if ($restore_userdata_selected) {
 124                 $status = $status and data_records_restore_mods ($mod->id, $newid, $info, $restore);
 125             }
 126
 127             // If the backup contained $data->participants, $data->assesspublic
 128             // and $data->groupmode, we need to convert the data to use Roles.
 129             // It means the backup was made pre Moodle 1.7. We check the
 130             // backup_version to make sure.
 131             if (isset($database->participants) && isset($database->assesspublic)) {
 132
 133                 if (!$teacherroles = get_roles_with_capability('moodle/legacy:teacher', CAP_ALLOW)) {
 134                       notice('Default teacher role was not found. Roles and permissions '.
 135                              'for your database modules will have to be manually set.');
 136                 }
 137                 if (!$studentroles = get_roles_with_capability('moodle/legacy:student', CAP_ALLOW)) {
 138                       notice('Default student role was not found. Roles and permissions '.
 139                              'for all your database modules will have to be manually set.');
 140                 }
 141                 if (!$guestroles = get_roles_with_capability('moodle/legacy:guest', CAP_ALLOW)) {
 142                       notice('Default guest role was not found. Roles and permissions '.
 143                              'for all your database modules will have to be manually set.');
 144                 }
 145                 require_once($CFG->dirroot.'/mod/data/lib.php');
 146                 data_convert_to_roles($database, $teacherroles, $studentroles,
 147                                       $restore->mods['data']->instances[$mod->id]->restored_as_course_module);
 148             }
 149
 150         } else {
 151             $status = false;
 152         }
 153     } else {
 154         $status = false;
 155     }
 156
 157     return $status;
 158 }
 159
 160 function data_fields_restore_mods ($old_data_id, $new_data_id, $info, $restore) {
 161
 162     global $CFG, $fieldids;
 163
 164
 165     $fields = $info['MOD']['#']['FIELDS']['0']['#']['FIELD'];
 166
 167     for ($i = 0; $i < sizeof($fields); $i++) {
 168
 169         $fie_info = $fields[$i];
 170         $oldid = backup_todb($fie_info['#']['ID']['0']['#']);
 171
 172         $field -> dataid = $new_data_id;
 173         $field -> type = backup_todb($fie_info['#']['TYPE']['0']['#']);
 174         $field -> name = backup_todb($fie_info['#']['NAME']['0']['#']);
 175         $field -> description = backup_todb($fie_info['#']['DESCRIPTION']['0']['#']);
 176         $field -> param1 = backup_todb($fie_info['#']['PARAM1']['0']['#']);
 177         $field -> param2 = backup_todb($fie_info['#']['PARAM2']['0']['#']);
 178         $field -> param3 = backup_todb($fie_info['#']['PARAM3']['0']['#']);
 179         $field -> param4 = backup_todb($fie_info['#']['PARAM4']['0']['#']);
 180         $field -> param5 = backup_todb($fie_info['#']['PARAM5']['0']['#']);
 181         $field -> param6 = backup_todb($fie_info['#']['PARAM6']['0']['#']);
 182         $field -> param7 = backup_todb($fie_info['#']['PARAM7']['0']['#']);
 183         $field -> param8 = backup_todb($fie_info['#']['PARAM8']['0']['#']);
 184         $field -> param9 = backup_todb($fie_info['#']['PARAM9']['0']['#']);
 185         $field -> param10 = backup_todb($fie_info['#']['PARAM10']['0']['#']);
 186
 187         $newid = insert_record ("data_fields",$field);
 188
 189         $fieldids[$oldid] = $newid;    //so we can use them in sub tables that depends on both fieldid and recordid
 190
 191         //Do some output
 192         if (($i+1) % 50 == 0) {
 193             if (!defined('RESTORE_SILENTLY')) {
 194                 echo ".";
 195                 if (($i+1) % 1000 == 0) {
 196                     echo "<br />";
 197                 }
 198             }
 199             backup_flush(300);
 200         }
 201
 202         if ($newid) {
 203             //We have the newid, update backup_ids
 204             $status = backup_putid($restore->backup_unique_code,"data_fields",$oldid, $newid);
 205         } else {
 206             $status = false;
 207         }
 208
 209     }
 210     return $status;
 211
 212 }
 213
 214 function data_records_restore_mods ($old_data_id, $new_data_id, $info, $restore) {
 215
 216     global $CFG, $fieldids;
 217
 218     $status = true;
 219
 220     $records = $info['MOD']['#']['RECORDS']['0']['#']['RECORD'];
 221
 222     for ($i = 0; $i < sizeof($records); $i++) {
 223
 224         $rec_info = $records[$i];
 225         $oldid = backup_todb($rec_info['#']['ID']['0']['#']);
 226
 227         $record = new object();
 228         $record -> dataid = $new_data_id;
 229         $record -> userid = backup_todb($rec_info['#']['USERID']['0']['#']);
 230         $record -> groupid = backup_todb($rec_info['#']['GROUPID']['0']['#']);
 231         $record -> timecreated = backup_todb($rec_info['#']['TIMECREATED']['0']['#']);
 232         $record -> timemodified = backup_todb($rec_info['#']['TIMEMODIFIED']['0']['#']);
 233         $record -> approved = backup_todb($rec_info['#']['APPROVED']['0']['#']);
 234         $user = backup_getid($restore->backup_unique_code,"user",$record->userid);
 235         $group= backup_getid($restore->backup_unique_code,"groups",$record->groupid);
 236
 237         if ($user) {
 238             $record->userid = $user->new_id;
 239         }
 240         if ($group) {
 241             $record->groupid= $group->new_id;
 242         }
 243
 244         $newid = insert_record ("data_records",$record);
 245
 246         //Do some output
 247         if (($i+1) % 50 == 0) {
 248             if (!defined('RESTORE_SILENTLY')) {
 249                 echo ".";
 250                 if (($i+1) % 1000 == 0) {
 251                     echo "<br />";
 252                 }
 253             }
 254             backup_flush(300);
 255         }
 256
 257         if ($newid) {
 258             //We have the newid, update backup_ids
 259             $status = $status and backup_putid($restore->backup_unique_code,"data_records",$oldid, $newid);
 260
 261             $status = $status and data_content_restore_mods ($oldid, $newid, $old_data_id, $new_data_id, $rec_info, $restore);
 262             $status = $status and data_ratings_restore_mods ($oldid, $newid, $info, $rec_info);
 263             $status = $status and data_comments_restore_mods ($oldid, $newid, $info, $rec_info);
 264
 265         } else {
 266             $status = false;
 267         }
 268     }
 269     return $status;
 270 }
 271
 272 function data_content_restore_mods ($old_record_id, $new_record_id, $old_data_id, $new_data_id, $recinfo, $restore) {
 273
 274     global $CFG, $fieldids;
 275
 276     $status = true;
 277
 278     $contents = $recinfo['#']['CONTENTS']['0']['#']['CONTENT'];
 279
 280     for ($i = 0; $i < sizeof($contents); $i++) {
 281
 282         $con_info = $contents[$i];
 283         $oldid = backup_todb($con_info['#']['ID']['0']['#']);
 284         $oldfieldid = backup_todb($con_info['#']['FIELDID']['0']['#']);
 285         $oldrecordid = backup_todb($con_info['#']['RECORDID']['0']['#']);
 286
 287         $content -> recordid = $new_record_id;
 288         $content -> fieldid = $fieldids[$oldfieldid];
 289         $content -> content = backup_todb($con_info['#']['CONTENT']['0']['#']);
 290         $content -> content1 = backup_todb($con_info['#']['CONTENT1']['0']['#']);
 291         $content -> content2 = backup_todb($con_info['#']['CONTENT2']['0']['#']);
 292         $content -> content3 = backup_todb($con_info['#']['CONTENT3']['0']['#']);
 293         $content -> content4 = backup_todb($con_info['#']['CONTENT4']['0']['#']);
 294         $newid = insert_record ("data_content",$content);
 295
 296         //Do some output
 297         if (($i+1) % 50 == 0) {
 298             if (!defined('RESTORE_SILENTLY')) {
 299                 echo ".";
 300                 if (($i+1) % 1000 == 0) {
 301                     echo "<br />";
 302                 }
 303             }
 304             backup_flush(300);
 305         }
 306
 307         if ($newid) {
 308             //We have the newid, update backup_ids
 309
 310             $status = $status and data_restore_files ($old_data_id, $new_data_id, $oldfieldid, $content->fieldid, $oldrecordid, $content->recordid, $recinfo, $restore);
 311             $status = $status and backup_putid($restore->backup_unique_code,"data_content",$oldid, $newid);
 312         } else {
 313             $status = false;
 314         }
 315     }
 316     return $status;
 317 }
 318
 319
 320 function data_restore_files ($old_data_id, $new_data_id, $old_field_id, $new_field_id, $old_record_id, $new_record_id, $recinfo, $restore) {
 321
 322     global $CFG, $db;
 323
 324     $status = true;
 325     $todo = false;
 326     $moddata_path = "";
 327     $data_path = "";
 328     $temp_path = "";
 329
 330     //First, we check to "course_id" exists and create is as necessary
 331     //in CFG->dataroot
 332     $dest_dir = $CFG->dataroot."/".$restore->course_id;
 333     $status = check_dir_exists($dest_dir,true);
 334
 335     //Now, locate course's moddata directory
 336     $moddata_path = $CFG->dataroot."/".$restore->course_id."/".$CFG->moddata;
 337
 338     //Check it exists and create it
 339     $status = check_dir_exists($moddata_path,true);
 340
 341     //Now, locate data directory
 342     if ($status) {
 343         $data_path = $moddata_path."/data";
 344         //Check it exists and create it
 345         $status = check_dir_exists($data_path,true);
 346     }
 347
 348     //Now locate the temp dir we are gong to restore
 349     if ($status) {
 350         $temp_path = $CFG->dataroot."/temp/backup/".$restore->backup_unique_code.
 351                     "/moddata/data/".$old_data_id."/".$old_field_id."/".$old_record_id;
 352         $todo = check_dir_exists($temp_path);
 353     }
 354
 355     //If todo, we create the neccesary dirs in course moddata/data
 356     if ($status and $todo) {
 357         //First this data id
 358         $this_data_path = $data_path."/".$new_data_id;
 359
 360         $status = check_dir_exists($this_data_path,true);
 361         //Now this user id
 362         $this_field_path = $this_data_path."/".$new_field_id;
 363         $status = check_dir_exists($this_field_path,true);
 364         $this_record_path = $this_field_path = $this_field_path."/".$new_record_id;
 365         $status = check_dir_exists($this_record_path,true);
 366         //And now, copy temp_path to user_data_path
 367
 368         $status = @backup_copy_file($temp_path, $this_record_path);
 369     }
 370
 371     return $status;
 372 }
 373
 374 function data_ratings_restore_mods ($oldid, $newid, $info, $rec_info) {
 375
 376     global $CFG;
 377
 378     $status = true;
 379
 380     $ratings= $rec_info['#']['RATINGS']['0']['#']['RATING'];
 381
 382     if (empty($ratings)) { // no ratings to restore
 383         return true;
 384     }
 385     for ($i = 0; $i < sizeof($ratings); $i++) {
 386
 387         $rat_info = $ratings[$i];
 388
 389         $rating -> recordid = $newid;
 390         $rating -> userid = backup_todb($rat_info['#']['USERID']['0']['#']);
 391         $rating -> rating = backup_todb($rat_info['#']['RATING']['0']['#']);
 392
 393         if (! insert_record ("data_ratings",$rating)) {
 394             $status = false;
 395         }
 396     }
 397     return $status;
 398 }
 399
 400 function data_comments_restore_mods ($oldid, $newid, $info, $rec_info) {
 401
 402     global $CFG;
 403
 404     $status = true;
 405
 406     $comments= $rec_info['#']['COMMENTS']['0']['#']['COMMENT'];
 407
 408     if (empty($comments)) { // no comments to restore
 409         return true;
 410     }
 411
 412     for ($i = 0; $i < sizeof($comments); $i++) {
 413
 414         $com_info = $comments[$i];
 415
 416         $comment -> recordid = $newid;
 417         $comment -> userid = backup_todb($com_info['#']['USERID']['0']['#']);
 418         $comment -> content = backup_todb($com_info['#']['CONTENT']['0']['#']);
 419         $comment -> created = backup_todb($com_info['#']['CREATED']['0']['#']);
 420         $comment -> modified = backup_todb($com_info['#']['MODIFIED']['0']['#']);
 421         if (! insert_record ("data_comments",$comment)) {
 422             $status = false;
 423         }
 424
 425     }
 426     return $status;
 427
 428 }
 429
 430 /**
 431  * Returns a content decoded to support interactivities linking. Every module
 432  * should have its own. They are called automatically from
 433  * xxxx_decode_content_links_caller() function in each module
 434  * in the restore process.
 435  *
 436  * @param string $content the content to be decoded
 437  * @param object $restore the preferences used in restore
 438  * @return string the decoded string
 439  */
 440 function data_decode_content_links ($content,$restore) {
 441
 442     global $CFG;
 443
 444     $result = $content;
 445
 446 /// Link to the list of datas
 447
 448     $searchstring='/\$@(DATAINDEX)\*([0-9]+)@\$/';
 449 /// We look for it
 450     preg_match_all($searchstring,$content,$foundset);
 451 /// If found, then we are going to look for its new id (in backup tables)
 452     if ($foundset[0]) {
 453     /// print_object($foundset);                                     //Debug
 454     /// Iterate over foundset[2]. They are the old_ids
 455         foreach($foundset[2] as $old_id) {
 456         /// We get the needed variables here (course id)
 457             $rec = backup_getid($restore->backup_unique_code,"course",$old_id);
 458         /// Personalize the searchstring
 459             $searchstring='/\$@(DATAINDEX)\*('.$old_id.')@\$/';
 460         /// If it is a link to this course, update the link to its new location
 461             if($rec->new_id) {
 462             /// Now replace it
 463                 $result= preg_replace($searchstring,$CFG->wwwroot.'/mod/data/index.php?id='.$rec->new_id,$result);
 464             } else {
 465             /// It's a foreign link so leave it as original
 466                 $result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/data/index.php?id='.$old_id,$result);
 467             }
 468         }
 469     }
 470
 471 /// Link to data view by moduleid
 472
 473     $searchstring='/\$@(DATAVIEWBYID)\*([0-9]+)@\$/';
 474 /// We look for it
 475     preg_match_all($searchstring,$result,$foundset);
 476 /// If found, then we are going to look for its new id (in backup tables)
 477     if ($foundset[0]) {
 478     /// print_object($foundset);                                     //Debug
 479     /// Iterate over foundset[2]. They are the old_ids
 480         foreach($foundset[2] as $old_id) {
 481         /// We get the needed variables here (course_modules id)
 482             $rec = backup_getid($restore->backup_unique_code,"course_modules",$old_id);
 483         /// Personalize the searchstring
 484             $searchstring='/\$@(DATAVIEWBYID)\*('.$old_id.')@\$/';
 485         /// If it is a link to this course, update the link to its new location
 486             if($rec->new_id) {
 487             /// Now replace it
 488                 $result= preg_replace($searchstring,$CFG->wwwroot.'/mod/data/view.php?id='.$rec->new_id,$result);
 489             } else {
 490             /// It's a foreign link so leave it as original
 491                 $result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/data/view.php?id='.$old_id,$result);
 492             }
 493         }
 494     }
 495
 496 /// Link to data view by dataid
 497
 498     $searchstring='/\$@(DATAVIEWBYD)\*([0-9]+)@\$/';
 499 /// We look for it
 500     preg_match_all($searchstring,$result,$foundset);
 501 /// If found, then we are going to look for its new id (in backup tables)
 502     if ($foundset[0]) {
 503     /// print_object($foundset);                                     //Debug
 504     /// Iterate over foundset[2]. They are the old_ids
 505         foreach($foundset[2] as $old_id) {
 506         /// We get the needed variables here (data id)
 507             $rec = backup_getid($restore->backup_unique_code,"data",$old_id);
 508         /// Personalize the searchstring
 509             $searchstring='/\$@(DATAVIEWBYD)\*('.$old_id.')@\$/';
 510         /// If it is a link to this course, update the link to its new location
 511             if($rec->new_id) {
 512             /// Now replace it
 513                 $result= preg_replace($searchstring,$CFG->wwwroot.'/mod/data/view.php?d='.$rec->new_id,$result);
 514             } else {
 515             /// It's a foreign link so leave it as original
 516                 $result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/data/view.php?d='.$old_id,$result);
 517             }
 518         }
 519     }
 520
 521 /// Link to data record (element)
 522
 523     $searchstring='/\$@(DATAVIEWRECORD)\*([0-9]+)\*([0-9]+)@\$/';
 524 /// We look for it
 525     preg_match_all($searchstring,$result,$foundset);
 526 /// If found, then we are going to look for its new id (in backup tables)
 527     if ($foundset[0]) {
 528     /// print_object($foundset);                                     //Debug
 529     /// Iterate over foundset[2] and foundset[3]. They are the old_ids
 530         foreach($foundset[2] as $key => $old_id) {
 531             $old_id2 = $foundset[3][$key];
 532         /// We get the needed variables here (data id and record id)
 533             $rec = backup_getid($restore->backup_unique_code,"data",$old_id);
 534             $rec2 = backup_getid($restore->backup_unique_code,"data_records",$old_id2);
 535         /// Personalize the searchstring
 536             $searchstring='/\$@(DATAVIEWRECORD)\*('.$old_id.')\*('.$old_id2.')@\$/';
 537         /// If it is a link to this course, update the link to its new location
 538             if($rec->new_id && $rec2->new_id) {
 539             /// Now replace it
 540                 $result= preg_replace($searchstring,$CFG->wwwroot.'/mod/data/view.php?d='.$rec->new_id.'&amp;rid='.$rec2->new_id,$result);
 541             } else {
 542             /// It's a foreign link so leave it as original
 543                 $result= preg_replace($searchstring,$restore->original_wwwroot.'/mod/data/view.php?d='.$old_id.'&amp;rid='.$old_id2,$result);
 544             }
 545         }
 546     }
 547
 548     return $result;
 549 }
 550
 551 /**
 552  * This function makes all the necessary calls to xxxx_decode_content_links()
 553  * function in each module, passing them the desired contents to be decoded
 554  * from backup format to destination site/course in order to mantain inter-activities
 555  * working in the backup/restore process. It's called from restore_decode_content_links()
 556  * function in restore process
 557  *
 558  * @param object $restore the preferences used in restore
 559  * @return boolean status of the execution
 560  */
 561 function data_decode_content_links_caller($restore) {
 562
 563     global $CFG;
 564     $status = true;
 565
 566 /// Process every DATA (intro) in the course
 567     if ($datas = get_records_sql ("SELECT d.id, d.intro
 568                                   FROM {$CFG->prefix}data d
 569                                   WHERE d.course = $restore->course_id")) {
 570     /// Iterate over each data->intro
 571         $i = 0;   //Counter to send some output to the browser to avoid timeouts
 572         foreach ($datas as $data) {
 573         /// Increment counter
 574             $i++;
 575             $content = $data->intro;
 576             $result = restore_decode_content_links_worker($content,$restore);
 577             if ($result != $content) {
 578             /// Update record
 579                 $data->intro = addslashes($result);
 580                 $status = update_record("data",$data);
 581                 if (debugging()) {
 582                     if (!defined('RESTORE_SILENTLY')) {
 583                         echo '<br /><hr />'.s($content).'<br />changed to<br />'.s($result).'<hr /><br />';
 584                     }
 585                 }
 586             }
 587         /// Do some output
 588             if (($i+1) % 5 == 0) {
 589                 if (!defined('RESTORE_SILENTLY')) {
 590                     echo ".";
 591                     if (($i+1) % 100 == 0) {
 592                         echo "<br />";
 593                     }
 594                 }
 595                 backup_flush(300);
 596             }
 597         }
 598     }
 599
 600 /// Process every COMMENT (content) in the course
 601     if ($comments = get_records_sql ("SELECT dc.id, dc.content
 602                                       FROM {$CFG->prefix}data d,
 603                                            {$CFG->prefix}data_records dr,
 604                                            {$CFG->prefix}data_comments dc
 605                                       WHERE d.course = $restore->course_id
 606                                         AND dr.dataid = d.id
 607                                         AND dc.recordid = dr.id")) {
 608     /// Iterate over each data_comments->content
 609         $i = 0;   //Counter to send some output to the browser to avoid timeouts
 610         foreach ($comments as $comment) {
 611         /// Increment counter
 612             $i++;
 613             $content = $comment->content;
 614             $result = restore_decode_content_links_worker($content,$restore);
 615             if ($result != $content) {
 616             /// Update record
 617                 $comment->content = addslashes($result);
 618                 $status = update_record("data_comments",$comment);
 619                 if (debugging()) {
 620                     if (!defined('RESTORE_SILENTLY')) {
 621                         echo '<br /><hr />'.s($content).'<br />changed to<br />'.s($result).'<hr /><br />';
 622                     }
 623                 }
 624             }
 625         /// Do some output
 626             if (($i+1) % 5 == 0) {
 627                 if (!defined('RESTORE_SILENTLY')) {
 628                     echo ".";
 629                     if (($i+1) % 100 == 0) {
 630                         echo "<br />";
 631                     }
 632                 }
 633                 backup_flush(300);
 634             }
 635         }
 636     }
 637
 638 /// Process every CONTENT (content, content1, content2, content3, content4) in the course
 639     if ($contents = get_records_sql ("SELECT dc.id, dc.content, dc.content1, dc.content2, dc.content3, dc.content4
 640                                       FROM {$CFG->prefix}data d,
 641                                            {$CFG->prefix}data_records dr,
 642                                            {$CFG->prefix}data_content dc
 643                                       WHERE d.course = $restore->course_id
 644                                         AND dr.dataid = d.id
 645                                         AND dc.recordid = dr.id")) {
 646     /// Iterate over each data_content->content, content1, content2, content3 and content4
 647         $i = 0;   //Counter to send some output to the browser to avoid timeouts
 648         foreach ($contents as $cnt) {
 649         /// Increment counter
 650             $i++;
 651             $content = $cnt->content;
 652             $content1 = $cnt->content1;
 653             $content2 = $cnt->content2;
 654             $content3 = $cnt->content3;
 655             $content4 = $cnt->content4;
 656             $result = restore_decode_content_links_worker($content,$restore);
 657             $result1 = restore_decode_content_links_worker($content1,$restore);
 658             $result2 = restore_decode_content_links_worker($content2,$restore);
 659             $result3 = restore_decode_content_links_worker($content3,$restore);
 660             $result4 = restore_decode_content_links_worker($content4,$restore);
 661             if ($result != $content || $result1 != $content1 || $result2 != $content2 ||
 662                 $result3 != $content3 || $result4 != $content4) {
 663             /// Unset fields to update only the necessary ones
 664                 unset($cnt->content);
 665                 unset($cnt->content1);
 666                 unset($cnt->content2);
 667                 unset($cnt->content3);
 668                 unset($cnt->content4);
 669             /// Conditionally set the fields
 670                 if ($result != $content) {
 671                     $cnt->content = addslashes($result);
 672                 }
 673                 if ($result1 != $content1) {
 674                     $cnt->content1 = addslashes($result1);
 675                 }
 676                 if ($result2 != $content2) {
 677                     $cnt->content2 = addslashes($result2);
 678                 }
 679                 if ($result3 != $content3) {
 680                     $cnt->content3 = addslashes($result3);
 681                 }
 682                 if ($result4 != $content4) {
 683                     $cnt->content4 = addslashes($result4);
 684                 }
 685             /// Update record with the changed fields
 686                 $status = update_record("data_content",$cnt);
 687                 if (debugging()) {
 688                     if (!defined('RESTORE_SILENTLY')) {
 689                         echo '<br /><hr />'.s($content).'<br />changed to<br />'.s($result).'<hr /><br />';
 690                     }
 691                 }
 692             }
 693         /// Do some output
 694             if (($i+1) % 5 == 0) {
 695                 if (!defined('RESTORE_SILENTLY')) {
 696                     echo ".";
 697                     if (($i+1) % 100 == 0) {
 698                         echo "<br />";
 699                     }
 700                 }
 701                 backup_flush(300);
 702             }
 703         }
 704     }
 705
 706     return $status;
 707 }
 708
 709 ?>