admin/uploaduser.php

   1 <?php
   2
   3 /// Bulk user registration script from a comma separated file
   4 /// Returns list of users with their user ids
   5
   6 require('../config.php');
   7 require_once($CFG->libdir.'/adminlib.php');
   8 require_once($CFG->libdir.'/csvlib.class.php');
   9 require_once($CFG->dirroot.'/user/profile/lib.php');
  10 require_once('uploaduser_form.php');
  11
  12 $iid         = optional_param('iid', '', PARAM_INT);
  13 $previewrows = optional_param('previewrows', 10, PARAM_INT);
  14 $readcount   = optional_param('readcount', 0, PARAM_INT);
  15 $uploadtype  = optional_param('uutype', 0, PARAM_INT);
  16
  17 define('UU_ADDNEW', 0);
  18 define('UU_ADDINC', 1);
  19 define('UU_ADD_UPDATE', 2);
  20 define('UU_UPDATE', 3);
  21
  22 $choices = array(UU_ADDNEW    => get_string('uuoptype_addnew', 'admin'),
  23                  UU_ADDINC    => get_string('uuoptype_addinc', 'admin'),
  24                  UU_ADD_UPDATE => get_string('uuoptype_addupdate', 'admin'),
  25                  UU_UPDATE     => get_string('uuoptype_update', 'admin'));
  26
  27 @set_time_limit(3600); // 1 hour should be enough
  28 @raise_memory_limit('256M');
  29 if (function_exists('apache_child_terminate')) {
  30     // if we are running from Apache, give httpd a hint that
  31     // it can recycle the process after it's done. Apache's
  32     // memory management is truly awful but we can help it.
  33     @apache_child_terminate();
  34 }
  35
  36 require_login();
  37 admin_externalpage_setup('uploadusers');
  38 require_capability('moodle/site:uploadusers', get_context_instance(CONTEXT_SYSTEM));
  39
  40 $textlib = textlib_get_instance();
  41 $systemcontext = get_context_instance(CONTEXT_SYSTEM);
  42
  43 $struserrenamed             = get_string('userrenamed', 'admin');
  44 $strusernotrenamedexists    = get_string('usernotrenamedexists', 'error');
  45 $strusernotrenamedmissing   = get_string('usernotrenamedmissing', 'error');
  46 $strusernotrenamedoff       = get_string('usernotrenamedoff', 'error');
  47 $strusernotrenamedadmin     = get_string('usernotrenamedadmin', 'error');
  48
  49 $struserupdated             = get_string('useraccountupdated', 'admin');
  50 $strusernotupdated          = get_string('usernotupdatederror', 'error');
  51 $strusernotupdatednotexists = get_string('usernotupdatednotexists', 'error');
  52 $strusernotupdatedadmin     = get_string('usernotupdatedadmin', 'error');
  53
  54 $struseradded               = get_string('newuser');
  55 $strusernotadded            = get_string('usernotaddedregistered', 'error');
  56 $strusernotaddederror       = get_string('usernotaddederror', 'error');
  57
  58 $struserdeleted             = get_string('userdeleted', 'admin');
  59 $strusernotdeletederror     = get_string('usernotdeletederror', 'error');
  60 $strusernotdeletedmissing   = get_string('usernotdeletedmissing', 'error');
  61 $strusernotdeletedoff       = get_string('usernotdeletedoff', 'error');
  62 $strusernotdeletedadmin     = get_string('usernotdeletedadmin', 'error');
  63
  64 $strcannotassignrole        = get_string('cannotassignrole', 'error');
  65 $strduplicateusername       = get_string('duplicateusername', 'error');
  66
  67 $struserauthunsupported     = get_string('userauthunsupported', 'error');
  68 $stremailduplicate          = get_string('useremailduplicate', 'error');
  69
  70 $errorstr                   = get_string('error');
  71
  72 $returnurl = $CFG->wwwroot.'/'.$CFG->admin.'/uploaduser.php';
  73 $bulknurl  = $CFG->wwwroot.'/'.$CFG->admin.'/user/user_bulk.php';
  74
  75 $today = time();
  76 $today = make_timestamp(date('Y', $today), date('m', $today), date('d', $today), 0, 0, 0);
  77
  78 // array of all valid fields for validation
  79 $STD_FIELDS = array('id', 'firstname', 'lastname', 'username', 'email',
  80         'city', 'country', 'lang', 'auth', 'timezone', 'mailformat',
  81         'maildisplay', 'maildigest', 'htmleditor', 'ajax', 'autosubscribe',
  82         'mnethostid', 'institution', 'department', 'idnumber', 'skype',
  83         'msn', 'aim', 'yahoo', 'icq', 'phone1', 'phone2', 'address',
  84         'url', 'description', 'descriptionformat', 'oldusername', 'emailstop', 'deleted',
  85         'password');
  86
  87 $PRF_FIELDS = array();
  88
  89 if ($prof_fields = $DB->get_records('user_info_field')) {
  90     foreach ($prof_fields as $prof_field) {
  91         $PRF_FIELDS[] = 'profile_field_'.$prof_field->shortname;
  92     }
  93     unset($prof_fields);
  94 }
  95
  96 if (empty($iid)) {
  97     $mform = new admin_uploaduser_form1();
  98
  99     if ($formdata = $mform->get_data()) {
 100         $iid = csv_import_reader::get_new_iid('uploaduser');
 101         $cir = new csv_import_reader($iid, 'uploaduser');
 102
 103         $content = $mform->get_file_content('userfile');
 104         $optype = $formdata->uutype;
 105         $readcount = $cir->load_csv_content($content, $formdata->encoding, $formdata->delimiter_name, 'validate_user_upload_columns');
 106         unset($content);
 107
 108         if ($readcount === false) {
 109             //TODO: need more detailed error info
 110             print_error('csvloaderror', '', $returnurl);
 111         } else if ($readcount == 0) {
 112             print_error('csvemptyfile', 'error', $returnurl);
 113         }
 114         // continue to form2
 115
 116     } else {
 117         echo $OUTPUT->header();
 118
 119         echo $OUTPUT->heading_with_help(get_string('uploadusers', 'admin'), 'uploadusers', 'admin');
 120
 121         $mform->display();
 122         echo $OUTPUT->footer();
 123         die;
 124     }
 125 } else {
 126     $cir = new csv_import_reader($iid, 'uploaduser');
 127 }
 128
 129 if (!$columns = $cir->get_columns()) {
 130     print_error('cannotreadtmpfile', 'error', $returnurl);
 131 }
 132 $mform = new admin_uploaduser_form2(null, $columns);
 133 // get initial date from form1
 134 $mform->set_data(array('iid'=>$iid, 'previewrows'=>$previewrows, 'readcount'=>$readcount, 'uutypelabel'=>$choices[$uploadtype], 'uutype'=>$uploadtype));
 135
 136 // If a file has been uploaded, then process it
 137 if ($formdata = $mform->is_cancelled()) {
 138     $cir->cleanup(true);
 139     redirect($returnurl);
 140
 141 } else if ($formdata = $mform->get_data()) {
 142     // Print the header
 143     echo $OUTPUT->header();
 144     echo $OUTPUT->heading(get_string('uploadusersresult', 'admin'));
 145
 146     $optype = $formdata->uutype;
 147
 148     $createpasswords   = (!empty($formdata->uupasswordnew) and $optype != UU_UPDATE);
 149     $updatepasswords   = (!empty($formdata->uupasswordold)  and $optype != UU_ADDNEW and $optype != UU_ADDINC);
 150     $allowrenames      = (!empty($formdata->uuallowrenames) and $optype != UU_ADDNEW and $optype != UU_ADDINC);
 151     $allowdeletes      = (!empty($formdata->uuallowdeletes) and $optype != UU_ADDNEW and $optype != UU_ADDINC);
 152     $updatetype        = isset($formdata->uuupdatetype) ? $formdata->uuupdatetype : 0;
 153     $bulk              = $formdata->uubulk;
 154     $noemailduplicates = $formdata->uunoemailduplicates;
 155
 156     // verification moved to two places: after upload and into form2
 157     $usersnew     = 0;
 158     $usersupdated = 0;
 159     $userserrors  = 0;
 160     $deletes      = 0;
 161     $deleteerrors = 0;
 162     $renames      = 0;
 163     $renameerrors = 0;
 164     $usersskipped = 0;
 165     $weakpasswords = 0;
 166
 167     // caches
 168     $ccache       = array(); // course cache - do not fetch all courses here, we  will not probably use them all anyway!
 169     $rolecache    = uu_allowed_roles_cache(); // roles lookup cache
 170     $manualcacche = array(); // cache of used manual enrol plugins in each course
 171
 172     $allowedauths   = uu_allowed_auths();
 173     $allowedauths   = array_keys($allowedauths);
 174     $availableauths = get_plugin_list('auth');
 175     $availableauths = array_keys($availableauths);
 176
 177     // we use only manual enrol plugin here, if it is disabled no enrol is done
 178     if (enrol_is_enabled('manual')) {
 179         $manual = enrol_get_plugin('manual');
 180     } else {
 181         $manual = NULL;
 182     }
 183
 184     // clear bulk selection
 185     if ($bulk) {
 186         $SESSION->bulk_users = array();
 187     }
 188
 189     // init csv import helper
 190     $cir->init();
 191     $linenum = 1; //column header is first line
 192
 193     // init upload progress tracker
 194     $upt = new uu_progress_tracker();
 195     $upt->init(); // start table
 196
 197     while ($line = $cir->next()) {
 198         $upt->flush();
 199         $linenum++;
 200
 201         $upt->track('line', $linenum);
 202
 203         $forcechangepassword = false;
 204
 205         $user = new object();
 206         // by default, use the local mnet id (this may be changed in the file)
 207         $user->mnethostid = $CFG->mnet_localhost_id;
 208         // add fields to user object
 209         foreach ($line as $key => $value) {
 210             if ($value !== '') {
 211                 $key = $columns[$key];
 212                 // password is special field
 213                 if ($key == 'password') {
 214                     if ($value !== '') {
 215                         $user->password = hash_internal_user_password($value);
 216                         if (!empty($CFG->passwordpolicy) and !check_password_policy($value, $errmsg)) {
 217                             $forcechangepassword = true;
 218                             $weakpasswords++;
 219                         }
 220                     }
 221                 } else {
 222                     $user->$key = $value;
 223                     if (in_array($key, $upt->columns)) {
 224                         $upt->track($key, $value);
 225                     }
 226                 }
 227             }
 228         }
 229
 230         // get username, first/last name now - we need them in templates!!
 231         if ($optype == UU_UPDATE) {
 232             // when updating only username is required
 233             if (!isset($user->username)) {
 234                 $upt->track('status', get_string('missingfield', 'error', 'username'), 'error');
 235                 $upt->track('username', $errorstr, 'error');
 236                 $userserrors++;
 237                 continue;
 238             }
 239
 240         } else {
 241             $error = false;
 242             // when all other ops need firstname and lastname
 243             if (!isset($user->firstname) or $user->firstname === '') {
 244                 $upt->track('status', get_string('missingfield', 'error', 'firstname'), 'error');
 245                 $upt->track('firstname', $errorstr, 'error');
 246                 $error = true;
 247             }
 248             if (!isset($user->lastname) or $user->lastname === '') {
 249                 $upt->track('status', get_string('missingfield', 'error', 'lastname'), 'error');
 250                 $upt->track('lastname', $errorstr, 'error');
 251                 $error = true;
 252             }
 253             if ($error) {
 254                 $userserrors++;
 255                 continue;
 256             }
 257             // we require username too - we might use template for it though
 258             if (!isset($user->username)) {
 259                 if (!isset($formdata->username) or $formdata->username === '') {
 260                     $upt->track('status', get_string('missingfield', 'error', 'username'), 'error');
 261                     $upt->track('username', $errorstr, 'error');
 262                     $userserrors++;
 263                     continue;
 264                 } else {
 265                     $user->username = process_template($formdata->username, $user);
 266                     $upt->track('username', $user->username);
 267                 }
 268             }
 269         }
 270
 271         // normalize username
 272         $user->username = clean_param($user->username, PARAM_USERNAME);
 273
 274         if (empty($user->username)) {
 275             $upt->track('status', get_string('missingfield', 'error', 'username'), 'error');
 276             $upt->track('username', $errorstr, 'error');
 277             $userserrors++;
 278             continue;
 279         }
 280
 281         if ($existinguser = $DB->get_record('user', array('username'=>$user->username, 'mnethostid'=>$user->mnethostid))) {
 282             $upt->track('id', $existinguser->id, 'normal', false);
 283         }
 284
 285         // find out in username incrementing required
 286         if ($existinguser and $optype == UU_ADDINC) {
 287             $oldusername = $user->username;
 288             $user->username = increment_username($user->username, $user->mnethostid);
 289             $upt->track('username', '', 'normal', false); // clear previous
 290             $upt->track('username', $oldusername.'-->'.$user->username, 'info');
 291             $existinguser = false;
 292         }
 293
 294         // add default values for remaining fields
 295         foreach ($STD_FIELDS as $field) {
 296             if (isset($user->$field)) {
 297                 continue;
 298             }
 299             // all validation moved to form2
 300             if (isset($formdata->$field)) {
 301                 // process templates
 302                 $user->$field = process_template($formdata->$field, $user);
 303             }
 304         }
 305         foreach ($PRF_FIELDS as $field) {
 306             if (isset($user->$field)) {
 307                 continue;
 308             }
 309             if (isset($formdata->$field)) {
 310                 // process templates
 311                 $user->$field = process_template($formdata->$field, $user);
 312             }
 313         }
 314
 315         // delete user
 316         if (!empty($user->deleted)) {
 317             if (!$allowdeletes) {
 318                 $usersskipped++;
 319                 $upt->track('status', $strusernotdeletedoff, 'warning');
 320                 continue;
 321             }
 322             if ($existinguser) {
 323                 if (is_siteadmin($existinguser->id)) {
 324                     $upt->track('status', $strusernotdeletedadmin, 'error');
 325                     $deleteerrors++;
 326                     continue;
 327                 }
 328                 if (delete_user($existinguser)) {
 329                     $upt->track('status', $struserdeleted);
 330                     $deletes++;
 331                 } else {
 332                     $upt->track('status', $strusernotdeletederror, 'error');
 333                     $deleteerrors++;
 334                 }
 335             } else {
 336                 $upt->track('status', $strusernotdeletedmissing, 'error');
 337                 $deleteerrors++;
 338             }
 339             continue;
 340         }
 341         // we do not need the deleted flag anymore
 342         unset($user->deleted);
 343
 344         // renaming requested?
 345         if (!empty($user->oldusername) ) {
 346             $oldusername = $textlib->strtolower($user->oldusername);
 347             if (!$allowrenames) {
 348                 $usersskipped++;
 349                 $upt->track('status', $strusernotrenamedoff, 'warning');
 350                 continue;
 351             }
 352
 353             if ($existinguser) {
 354                 $upt->track('status', $strusernotrenamedexists, 'error');
 355                 $renameerrors++;
 356                 continue;
 357             }
 358
 359             if ($olduser = $DB->get_record('user', array('username'=>$oldusername, 'mnethostid'=>$user->mnethostid))) {
 360                 $upt->track('id', $olduser->id, 'normal', false);
 361                 if (is_siteadmin($olduser->id)) {
 362                     $upt->track('status', $strusernotrenamedadmin, 'error');
 363                     $renameerrors++;
 364                     continue;
 365                 }
 366                 $DB->set_field('user', 'username', $user->username, array('id'=>$olduser->id));
 367                 $upt->track('username', '', 'normal', false); // clear previous
 368                 $upt->track('username', $oldusername.'-->'.$user->username, 'info');
 369                 $upt->track('status', $struserrenamed);
 370                 $renames++;
 371             } else {
 372                 $upt->track('status', $strusernotrenamedmissing, 'error');
 373                 $renameerrors++;
 374                 continue;
 375             }
 376             $existinguser = $olduser;
 377             $existinguser->username = $user->username;
 378         }
 379
 380         // can we process with update or insert?
 381         $skip = false;
 382         switch ($optype) {
 383             case UU_ADDNEW:
 384                 if ($existinguser) {
 385                     $usersskipped++;
 386                     $upt->track('status', $strusernotadded, 'warning');
 387                     $skip = true;
 388                 }
 389                 break;
 390
 391             case UU_ADDINC:
 392                 if ($existinguser) {
 393                     //this should not happen!
 394                     $upt->track('status', $strusernotaddederror, 'error');
 395                     $userserrors++;
 396                     continue;
 397                 }
 398                 break;
 399
 400             case UU_ADD_UPDATE:
 401                 break;
 402
 403             case UU_UPDATE:
 404                 if (!$existinguser) {
 405                     $usersskipped++;
 406                     $upt->track('status', $strusernotupdatednotexists, 'warning');
 407                     $skip = true;
 408                 }
 409                 break;
 410         }
 411
 412         if ($skip) {
 413             continue;
 414         }
 415
 416         if ($existinguser) {
 417             $user->id = $existinguser->id;
 418
 419             if (is_siteadmin($user->id)) {
 420                 $upt->track('status', $strusernotupdatedadmin, 'error');
 421                 $userserrors++;
 422                 continue;
 423             }
 424
 425             if (!$updatetype) {
 426                 // no updates of existing data at all
 427             } else {
 428                 $existinguser->timemodified = time();
 429                 if (empty($existinguser->timecreated)) {
 430                     if (empty($existinguser->firstaccess)) {
 431                         $existinguser->timecreated = time();
 432                     } else {
 433                         $existinguser->timecreated = $existinguser->firstaccess;
 434                     }
 435                 }
 436
 437                 //load existing profile data
 438                 profile_load_data($existinguser);
 439
 440                 $allowed = array();
 441                 if ($updatetype == 1) {
 442                     $allowed = $columns;
 443                 } else if ($updatetype == 2 or $updatetype == 3) {
 444                     $allowed = array_merge($STD_FIELDS, $PRF_FIELDS);
 445                 }
 446                 foreach ($allowed as $column) {
 447                     if ($column == 'username') {
 448                         continue;
 449                     }
 450                     if ($column == 'password') {
 451                         if (!$updatepasswords or $updatetype == 3) {
 452                             continue;
 453                         } else if (!empty($user->password)) {
 454                             $upt->track('password', get_string('updated'));
 455                             if ($forcechangepassword) {
 456                                 set_user_preference('auth_forcepasswordchange', 1, $existinguser->id);
 457                             }
 458                         }
 459                     }
 460                     if ((array_key_exists($column, $existinguser) and array_key_exists($column, $user)) or in_array($column, $PRF_FIELDS)) {
 461                         if ($updatetype == 3 and $existinguser->$column !== '') {
 462                             //missing == non-empty only
 463                             continue;
 464                         }
 465                         if ($existinguser->$column !== $user->$column) {
 466                             if ($column == 'email') {
 467                                 if ($DB->record_exists('user', array('email'=>$user->email))) {
 468                                     if ($noemailduplicates) {
 469                                         $upt->track('email', $stremailduplicate, 'error');
 470                                         $upt->track('status', $strusernotupdated, 'error');
 471                                         $userserrors++;
 472                                         continue 2;
 473                                     } else {
 474                                         $upt->track('email', $stremailduplicate, 'warning');
 475                                     }
 476                                 }
 477                             }
 478                             if ($column != 'password' and in_array($column, $upt->columns)) {
 479                                 $upt->track($column, '', 'normal', false); // clear previous
 480                                 $upt->track($column, $existinguser->$column.'-->'.$user->$column, 'info');
 481                             }
 482                             $existinguser->$column = $user->$column;
 483                         }
 484                     }
 485                 }
 486
 487                 // do not update record if new auth plguin does not exist!
 488                 if (!in_array($existinguser->auth, $availableauths)) {
 489                     $upt->track('auth', get_string('userautherror', 'error', $existinguser->auth), 'error');
 490                     $upt->track('status', $strusernotupdated, 'error');
 491                     $userserrors++;
 492                     continue;
 493                 } else if (!in_array($existinguser->auth, $allowedauths)) {
 494                     $upt->track('auth', $struserauthunsupported, 'warning');
 495                 }
 496
 497                 $DB->update_record('user', $existinguser);
 498                 $upt->track('status', $struserupdated);
 499                 $usersupdated++;
 500                 // save custom profile fields data from csv file
 501                 profile_save_data($existinguser);
 502             }
 503
 504             if ($bulk == 2 or $bulk == 3) {
 505                 if (!in_array($user->id, $SESSION->bulk_users)) {
 506                     $SESSION->bulk_users[] = $user->id;
 507                 }
 508             }
 509
 510         } else {
 511             // save the user to the database
 512             $user->confirmed = 1;
 513             $user->timemodified = time();
 514             $user->timecreated = time();
 515
 516             if (!$createpasswords and empty($user->password)) {
 517                 $upt->track('password', get_string('missingfield', 'error', 'password'), 'error');
 518                 $upt->track('status', $strusernotaddederror, 'error');
 519                 $userserrors++;
 520                 continue;
 521             }
 522
 523             // do not insert record if new auth plguin does not exist!
 524             if (isset($user->auth)) {
 525                 if (!in_array($user->auth, $availableauths)) {
 526                     $upt->track('auth', get_string('userautherror', 'error', $user->auth), 'error');
 527                     $upt->track('status', $strusernotaddederror, 'error');
 528                     $userserrors++;
 529                     continue;
 530                 } else if (!in_array($user->auth, $allowedauths)) {
 531                     $upt->track('auth', $struserauthunsupported, 'warning');
 532                 }
 533             }
 534
 535             if ($DB->record_exists('user', array('email'=>$user->email))) {
 536                 if ($noemailduplicates) {
 537                     $upt->track('email', $stremailduplicate, 'error');
 538                     $upt->track('status', $strusernotaddederror, 'error');
 539                     $userserrors++;
 540                     continue;
 541                 } else {
 542                     $upt->track('email', $stremailduplicate, 'warning');
 543                 }
 544             }
 545
 546             $user->id = $DB->insert_record('user', $user);
 547             $info = ': ' . $user->username .' (ID = ' . $user->id . ')';
 548             $upt->track('status', $struseradded);
 549             $upt->track('id', $user->id, 'normal', false);
 550             $usersnew++;
 551             if ($createpasswords and empty($user->password)) {
 552                 // passwords will be created and sent out on cron
 553                 set_user_preference('create_password', 1, $user->id);
 554                 set_user_preference('auth_forcepasswordchange', 1, $user->id);
 555                 $upt->track('password', get_string('new'));
 556             }
 557             if ($forcechangepassword) {
 558                 set_user_preference('auth_forcepasswordchange', 1, $user->id);
 559             }
 560
 561             // save custom profile fields data
 562             profile_save_data($user);
 563
 564             // make sure user context exists
 565             get_context_instance(CONTEXT_USER, $user->id);
 566
 567             if ($bulk == 1 or $bulk == 3) {
 568                 if (!in_array($user->id, $SESSION->bulk_users)) {
 569                     $SESSION->bulk_users[] = $user->id;
 570                 }
 571             }
 572         }
 573
 574         // find course enrolments, groups, roles/types and enrol periods
 575         foreach ($columns as $column) {
 576             if (!preg_match('/^course\d+$/', $column)) {
 577                 continue;
 578             }
 579             $i = substr($column, 6);
 580
 581             if (empty($user->{'course'.$i})) {
 582                 continue;
 583             }
 584             $shortname = $user->{'course'.$i};
 585             if (!array_key_exists($shortname, $ccache)) {
 586                 if (!$course = $DB->get_record('course', array('shortname'=>$shortname), 'id, shortname')) {
 587                     $upt->track('enrolments', get_string('unknowncourse', 'error', $shortname), 'error');
 588                     continue;
 589                 }
 590                 $ccache[$shortname] = $course;
 591                 $ccache[$shortname]->groups = null;
 592             }
 593             $courseid      = $ccache[$shortname]->id;
 594             $coursecontext = get_context_instance(CONTEXT_COURSE, $courseid);
 595             if (!isset($manualcache[$courseid])) {
 596                 if ($instances = enrol_get_instances($courseid, false)) {
 597                     $manualcache[$courseid] = reset($instances);
 598                 } else {
 599                     $manualcache[$courseid] = false;
 600                 }
 601             }
 602
 603             if ($manual and $manualcache[$courseid]) {
 604
 605                 // find role
 606                 $rid = false;
 607                 if (!empty($user->{'role'.$i})) {
 608                     $addrole = $user->{'role'.$i};
 609                     if (array_key_exists($addrole, $rolecache)) {
 610                         $rid = $rolecache[$addrole]->id;
 611                     } else {
 612                         $upt->track('enrolments', get_string('unknownrole', 'error', $addrole), 'error');
 613                         continue;
 614                     }
 615
 616                 } else if (!empty($user->{'type'.$i})) {
 617                     // if no role, then find "old" enrolment type
 618                     $addtype = $user->{'type'.$i};
 619                     if ($addtype < 1 or $addtype > 3) {
 620                         $upt->track('enrolments', $strerror.': typeN = 1|2|3', 'error');
 621                         continue;
 622                     } else if (empty($formdata->{'uulegacy'.$addtype})) {
 623                         continue;
 624                     } else {
 625                         $rid = $formdata->{'uulegacy'.$addtype};
 626                     }
 627                 } else {
 628                     // no role specified, use the default from manual enrol plugin
 629                     $rid = $manualcache[$courseid]->roleid;
 630                 }
 631
 632                 if ($rid) {
 633                     // find duration
 634                     $timeend   = 0;
 635                     if (!empty($user->{'enrolperiod'.$i})) {
 636                         $duration = (int)$user->{'enrolperiod'.$i} * 86400; // convert days to seconds
 637                         if ($duration > 0) { // sanity check
 638                             $timeend   = $today + $duration;
 639                         }
 640                     }
 641
 642                     $manual->enrol_user($manualcache[$courseid], $user->id, $rid, $today, $timeend, true);
 643
 644                     $a = new object();
 645                     $a->course = $shortname;
 646                     $a->role   = $rolecache[$rid]->name;
 647                     $upt->track('enrolments', get_string('enrolledincourserole', 'enrol_manual', $a));
 648                 }
 649             }
 650
 651             // find group to add to
 652             if (!empty($user->{'group'.$i})) {
 653                 // make sure user is enrolled into course before adding into groups
 654                 if (!is_enrolled($coursecontext, $user->id)) {
 655                     $upt->track('enrolments', get_string('addedtogroupnotenrolled', '', $gname), 'error');
 656                     continue;
 657                 }
 658                 //build group cache
 659                 if (is_null($ccache[$shortname]->groups)) {
 660                     $ccache[$shortname]->groups = array();
 661                     if ($groups = groups_get_all_groups($courseid)) {
 662                         foreach ($groups as $gid=>$group) {
 663                             $ccache[$shortname]->groups[$gid] = new object();
 664                             $ccache[$shortname]->groups[$gid]->id   = $gid;
 665                             $ccache[$shortname]->groups[$gid]->name = $group->name;
 666                             if (!is_numeric($group->name)) { // only non-numeric names are supported!!!
 667                             $ccache[$shortname]->groups[$group->name] = new object();
 668                             $ccache[$shortname]->groups[$group->name]->id   = $gid;
 669                             $ccache[$shortname]->groups[$group->name]->name = $group->name;
 670                             }
 671                         }
 672                     }
 673                 }
 674                 // group exists?
 675                 $addgroup = $user->{'group'.$i};
 676                 if (!array_key_exists($addgroup, $ccache[$shortname]->groups)) {
 677                     // if group doesn't exist,  create it
 678                     $newgroupdata = new object();
 679                     $newgroupdata->name = $addgroup;
 680                     $newgroupdata->courseid = $ccache[$shortname]->id;
 681                     if ($ccache[$shortname]->groups[$addgroup]->id = groups_create_group($newgroupdata)){
 682                         $ccache[$shortname]->groups[$addgroup]->name = $newgroupdata->name;
 683                     } else {
 684                         $upt->track('enrolments', get_string('unknowngroup', 'error', $addgroup), 'error');
 685                         continue;
 686                     }
 687                 }
 688                 $gid   = $ccache[$shortname]->groups[$addgroup]->id;
 689                 $gname = $ccache[$shortname]->groups[$addgroup]->name;
 690
 691                 try {
 692                     if (groups_add_member($gid, $user->id)) {
 693                         $upt->track('enrolments', get_string('addedtogroup', '', $gname));
 694                     }  else {
 695                         $upt->track('enrolments', get_string('addedtogroupnot', '', $gname), 'error');
 696                     }
 697                 } catch (moodle_exception $e) {
 698                     $upt->track('enrolments', get_string('addedtogroupnot', '', $gname), 'error');
 699                     continue;
 700                 }
 701             }
 702         }
 703     }
 704     $upt->flush();
 705     $upt->close(); // close table
 706
 707     $cir->close();
 708     $cir->cleanup(true);
 709
 710     echo $OUTPUT->box_start('boxwidthnarrow boxaligncenter generalbox', 'uploadresults');
 711     echo '<p>';
 712     if ($optype != UU_UPDATE) {
 713         echo get_string('userscreated', 'admin').': '.$usersnew.'<br />';
 714     }
 715     if ($optype == UU_UPDATE or $optype == UU_ADD_UPDATE) {
 716         echo get_string('usersupdated', 'admin').': '.$usersupdated.'<br />';
 717     }
 718     if ($allowdeletes) {
 719         echo get_string('usersdeleted', 'admin').': '.$deletes.'<br />';
 720         echo get_string('deleteerrors', 'admin').': '.$deleteerrors.'<br />';
 721     }
 722     if ($allowrenames) {
 723         echo get_string('usersrenamed', 'admin').': '.$renames.'<br />';
 724         echo get_string('renameerrors', 'admin').': '.$renameerrors.'<br />';
 725     }
 726     if ($usersskipped) {
 727         echo get_string('usersskipped', 'admin').': '.$usersskipped.'<br />';
 728     }
 729     echo get_string('usersweakpassword', 'admin').': '.$weakpasswords.'<br />';
 730     echo get_string('errors', 'admin').': '.$userserrors.'</p>';
 731     echo $OUTPUT->box_end();
 732
 733     if ($bulk) {
 734         echo $OUTPUT->continue_button($bulknurl);
 735     } else {
 736         echo $OUTPUT->continue_button($returnurl);
 737     }
 738     echo $OUTPUT->footer();
 739     die;
 740 }
 741
 742 // Print the header
 743 echo $OUTPUT->header();
 744
 745 /// Print the form
 746
 747 echo $OUTPUT->heading(get_string('uploaduserspreview', 'admin'));
 748
 749 $cir->init();
 750
 751 $contents = array();
 752 while ($fields = $cir->next()) {
 753     $errormsg = array();
 754     $rowcols = array();
 755     foreach($fields as $key =>$field) {
 756         $rowcols[$columns[$key]] = $field;
 757     }
 758
 759     $usernameexist = $DB->record_exists('user', array('username'=>$rowcols['username']));
 760     $emailexist    = $DB->record_exists('user', array('email'=>$rowcols['email']));
 761     $cleanusername = clean_param($rowcols['username'], PARAM_USERNAME);
 762     $validusername = strcmp($rowcols['username'], $cleanusername);
 763     $validemail = validate_email($rowcols['email']);
 764
 765     if ($validusername != 0 || !$validemail) {
 766         if ($validusername != 0) {
 767             $errormsg['username'] = get_string('invalidusernameupload');
 768         }
 769         if (!$validemail) {
 770             $errormsg['email'] = get_string('invalidemail');
 771         }
 772     }
 773
 774     switch($optype) {
 775         case UU_ADDNEW:
 776             if ($usernameexist || $emailexist ) {
 777                $rowcols['action'] = 'skipped';
 778             } else {
 779                 $rowcols['action'] = 'create';
 780             }
 781             break;
 782
 783         case UU_ADDINC:
 784             if (!$usernameexist && !$emailexist) {
 785                 $rowcols['action'] = 'create';
 786             } else if ($usernameexist && !$emailexist) {
 787                 $rowcols['action'] = 'addcountertousername';
 788                 $rowcols['username'] = increment_username($rowcols['username'], $CFG->mnet_localhost_id);
 789             } else {
 790                 $rowcols['action'] = 'skipped';
 791             }
 792             break;
 793
 794         case UU_ADD_UPDATE:
 795             $oldusernameexist = '';
 796             if (isset($rowcols['oldusername'])) {
 797                 $oldusernameexist = $DB->record_exists('user', array('username'=>$rowcols['oldusername']));
 798             }
 799             if ($usernameexist || $emailexist || $oldusernameexist ) {
 800                 $rowcols['action'] = 'update';
 801             } else {
 802                 $rowcols['action'] = 'create';
 803             }
 804             break;
 805
 806         case UU_UPDATE:
 807              $oldusernameexist = '';
 808             if (isset($rowcols['oldusername'])) {
 809                 $oldusernameexist = $DB->record_exists('user', array('username'=>$rowcols['oldusername']));
 810             }
 811
 812             if ($usernameexist || $emailexist || !empty($oldusernameexist)) {
 813                 $rowcols['action'] = 'update';
 814             } else {
 815                 $rowcols['action'] = "skipped";
 816             }
 817             break;
 818     }
 819
 820     if (!empty($errormsg)){
 821         $rowcols['error'] = array();
 822         $rowcols['error'] = $errormsg;
 823     }
 824     if ($rowcols['action'] != 'skipped') {
 825         $contents[] = $rowcols;
 826     }
 827 }
 828 $cir->close();
 829
 830 //get heading
 831 $headings = array();
 832 foreach ($contents as $content) {
 833     foreach($content as $key => $value) {
 834         if (!in_array($key, $headings)) {
 835             $headings[] = $key;
 836         }
 837     }
 838 }
 839
 840 $table = new html_table();
 841 $table->id = "uupreview";
 842 $table->attributes['class'] = 'generaltable';
 843 $table->tablealign = 'center';
 844 $table->summary = get_string('uploaduserspreview', 'admin');
 845 $table->head = array();
 846 $table->data = array();
 847
 848 //print heading
 849 foreach ($headings as $heading) {
 850     $table->head[] = s($heading);
 851 }
 852
 853 $haserror = false;
 854 $countcontent = 0;
 855 if (in_array('error', $headings)) {
 856     //print error
 857     $haserror = true;
 858
 859     foreach ($contents as $content) {
 860         if (array_key_exists('error', $content)) {
 861             $rows = new html_table_row();
 862             foreach ($content as $key => $value) {
 863                 $cells = new html_table_cell();
 864                 $errclass = '';
 865                 if (array_key_exists($key, $content['error'])) {
 866                     $errclass = 'uuerror';
 867                 }
 868                 if ($key == 'error') {
 869                     $value = join('<br />', $content['error']);
 870                 }
 871                 if ($key == 'action') {
 872                     $value = get_string($content[$key]);
 873                 }
 874                 $cells->text = $value;
 875                 $cells->attributes['class'] = $errclass;
 876                 $rows->cells[] = $cells;
 877             }
 878             $countcontent++;
 879             $table->data[] = $rows;
 880         }
 881     }
 882     $mform = new admin_uploaduser_form3();
 883     $mform->set_data(array('uutype'=>$uploadtype));
 884 } else if (empty($contents)) {
 885     $mform = new admin_uploaduser_form3();
 886     $mform->set_data(array('uutype'=>$uploadtype));
 887 } else {
 888     //print content
 889     foreach ($contents as $content) {
 890         $rows = new html_table_row();
 891         if ($countcontent >= $previewrows) {
 892             foreach ($content as $con) {
 893                 $cells = new html_table_cell();
 894                 $cells->text = '...';
 895             }
 896             $rows->cells[] = $cells;
 897             $table->data[] = $rows;
 898             break;
 899         }
 900         foreach ($headings as $heading) {
 901             $cells = new html_table_cell();
 902             if(array_key_exists($heading, $content)) {
 903                 if ($heading == 'action') {
 904                     $content[$heading] = get_string($content[$heading]);
 905                 }
 906                 $cells->text = $content[$heading];
 907             } else {
 908                 $cells->text = '';
 909             }
 910             $rows->cells[] = $cells;
 911         }
 912         $table->data[] = $rows;
 913         $countcontent++;
 914     }
 915 }
 916 echo html_writer::table($table);
 917
 918 if ($haserror) {
 919
 920     echo $OUTPUT->container(get_string('useruploadtype', 'moodle', $choices[$uploadtype]), 'centerpara');
 921     echo $OUTPUT->container(get_string('uploadinvalidpreprocessedcount', 'moodle', $countcontent), 'centerpara');
 922     echo $OUTPUT->container(get_string('invalidusername', 'moodle'), 'centerpara');
 923     echo $OUTPUT->container(get_string('uploadfilecontainerror', 'moodle'), 'centerpara');
 924 } else if (empty($contents)) {
 925     echo $OUTPUT->container(get_string('uupreprocessedcount', 'admin', $countcontent), 'centerpara');
 926     echo $OUTPUT->container(get_string('uploadfilecontentsnovaliddata'), 'centerpara');
 927 } else {
 928     echo $OUTPUT->container(get_string('uupreprocessedcount', 'admin', $countcontent), 'centerpara');
 929 }
 930
 931 $mform->display();
 932 echo $OUTPUT->footer();
 933 die;
 934
 935 /////////////////////////////////////
 936 /// Utility functions and classes ///
 937 /////////////////////////////////////
 938
 939 class uu_progress_tracker {
 940     var $_row;
 941     var $columns = array('status', 'line', 'id', 'username', 'firstname', 'lastname', 'email', 'password', 'auth', 'enrolments', 'deleted');
 942
 943     function uu_progress_tracker() {
 944     }
 945
 946     function init() {
 947         $ci = 0;
 948         echo '<table id="uuresults" class="generaltable boxaligncenter" summary="'.get_string('uploadusersresult', 'admin').'">';
 949         echo '<tr class="heading r0">';
 950         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('status').'</th>';
 951         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('uucsvline', 'admin').'</th>';
 952         echo '<th class="header c'.$ci++.'" scope="col">ID</th>';
 953         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('username').'</th>';
 954         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('firstname').'</th>';
 955         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('lastname').'</th>';
 956         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('email').'</th>';
 957         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('password').'</th>';
 958         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('authentication').'</th>';
 959         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('enrolments', 'enrol').'</th>';
 960         echo '<th class="header c'.$ci++.'" scope="col">'.get_string('delete').'</th>';
 961         echo '</tr>';
 962         $this->_row = null;
 963     }
 964
 965     function flush() {
 966         if (empty($this->_row) or empty($this->_row['line']['normal'])) {
 967             $this->_row = array();
 968             foreach ($this->columns as $col) {
 969                 $this->_row[$col] = array('normal'=>'', 'info'=>'', 'warning'=>'', 'error'=>'');
 970             }
 971             return;
 972         }
 973         $ci = 0;
 974         $ri = 1;
 975         echo '<tr class="r'.$ri.'">';
 976         foreach ($this->_row as $key=>$field) {
 977             foreach ($field as $type=>$content) {
 978                 if ($field[$type] !== '') {
 979                     if ($key == 'username' && $type == 'normal') {
 980                         $field[$type] = clean_param($field[$type], PARAM_USERNAME);
 981                     }
 982                     $field[$type] = '<span class="uu'.$type.'">'.$field[$type].'</span>';
 983                 } else {
 984                     unset($field[$type]);
 985                 }
 986             }
 987             echo '<td class="cell c'.$ci++.'">';
 988             if (!empty($field)) {
 989                 echo implode('<br />', $field);
 990             } else {
 991                 echo '&nbsp;';
 992             }
 993             echo '</td>';
 994         }
 995         echo '</tr>';
 996         foreach ($this->columns as $col) {
 997             $this->_row[$col] = array('normal'=>'', 'info'=>'', 'warning'=>'', 'error'=>'');
 998         }
 999     }
1000
1001     function track($col, $msg, $level='normal', $merge=true) {
1002         if (empty($this->_row)) {
1003             $this->flush(); //init arrays
1004         }
1005         if (!in_array($col, $this->columns)) {
1006             debugging('Incorrect column:'.$col);
1007             return;
1008         }
1009         if ($merge) {
1010             if ($this->_row[$col][$level] != '') {
1011                 $this->_row[$col][$level] .='<br />';
1012             }
1013             $this->_row[$col][$level] .= s($msg);
1014         } else {
1015             $this->_row[$col][$level] = s($msg);
1016         }
1017     }
1018
1019     function close() {
1020         echo '</table>';
1021     }
1022 }
1023
1024 /**
1025  * Validation callback function - verified the column line of csv file.
1026  * Converts column names to lowercase too.
1027  */
1028 function validate_user_upload_columns(&$columns) {
1029     global $STD_FIELDS, $PRF_FIELDS;
1030
1031     if (count($columns) < 2) {
1032         return get_string('csvfewcolumns', 'error');
1033     }
1034
1035     // test columns
1036     $processed = array();
1037     foreach ($columns as $key=>$unused) {
1038         $columns[$key] = strtolower($columns[$key]); // no unicode expected here, ignore case
1039         $field = $columns[$key];
1040         if (!in_array($field, $STD_FIELDS) && !in_array($field, $PRF_FIELDS) &&// if not a standard field and not an enrolment field, then we have an error
1041             !preg_match('/^course\d+$/', $field) && !preg_match('/^group\d+$/', $field) &&
1042             !preg_match('/^type\d+$/', $field) && !preg_match('/^role\d+$/', $field) &&
1043             !preg_match('/^enrolperiod\d+$/', $field)) {
1044             return get_string('invalidfieldname', 'error', $field);
1045         }
1046         if (in_array($field, $processed)) {
1047             return get_string('csvcolumnduplicates', 'error');
1048         }
1049         $processed[] = $field;
1050     }
1051     return true;
1052 }
1053
1054 /**
1055  * Increments username - increments trailing number or adds it if not present.
1056  * Varifies that the new username does not exist yet
1057  * @param string $username
1058  * @return incremented username which does not exist yet
1059  */
1060 function increment_username($username, $mnethostid) {
1061     global $DB;
1062
1063     if (!preg_match_all('/(.*?)([0-9]+)$/', $username, $matches)) {
1064         $username = $username.'2';
1065     } else {
1066         $username = $matches[1][0].($matches[2][0]+1);
1067     }
1068
1069     if ($DB->record_exists('user', array('username'=>$username, 'mnethostid'=>$mnethostid))) {
1070         return increment_username($username, $mnethostid);
1071     } else {
1072         return $username;
1073     }
1074 }
1075
1076 /**
1077  * Check if default field contains templates and apply them.
1078  * @param string template - potential tempalte string
1079  * @param object user object- we need username, firstname and lastname
1080  * @return string field value
1081  */
1082 function process_template($template, $user) {
1083     if (strpos($template, '%') === false) {
1084         return $template;
1085     }
1086
1087     // very very ugly hack!
1088     global $template_globals;
1089     $template_globals = new object();
1090     $template_globals->username  = isset($user->username)  ? $user->username  : '';
1091     $template_globals->firstname = isset($user->firstname) ? $user->firstname : '';
1092     $template_globals->lastname  = isset($user->lastname)  ? $user->lastname  : '';
1093
1094     $result = preg_replace_callback('/(?<!%)%([+-~])?(\d)*([flu])/', 'process_template_callback', $template);
1095
1096     $template_globals = null;
1097
1098     if (is_null($result)) {
1099         return $template; //error during regex processing??
1100     } else {
1101         return $result;
1102     }
1103 }
1104
1105 /**
1106  * Internal callback function.
1107  */
1108 function process_template_callback($block) {
1109     global $template_globals;
1110     $textlib = textlib_get_instance();
1111     $repl = $block[0];
1112
1113     switch ($block[3]) {
1114         case 'u': $repl = $template_globals->username; break;
1115         case 'f': $repl = $template_globals->firstname; break;
1116         case 'l': $repl = $template_globals->lastname; break;
1117     }
1118     switch ($block[1]) {
1119         case '+': $repl = $textlib->strtoupper($repl); break;
1120         case '-': $repl = $textlib->strtolower($repl); break;
1121         case '~': $repl = $textlib->strtotitle($repl); break;
1122     }
1123     if (!empty($block[2])) {
1124         $repl = $textlib->substr($repl, 0 , $block[2]);
1125     }
1126
1127     return $repl;
1128 }
1129
1130 /**
1131  * Returns list of auth plugins that are enabled and known to work.
1132  */
1133 function uu_allowed_auths() {
1134     global $CFG;
1135
1136     // only following plugins are guaranteed to work properly
1137     // TODO: add support for more plugins in 2.0
1138     $whitelist = array('manual', 'nologin', 'none', 'email');
1139     $plugins = get_enabled_auth_plugins();
1140     $choices = array();
1141     foreach ($plugins as $plugin) {
1142         $choices[$plugin] = get_string('pluginname', "auth_{$plugin}");
1143     }
1144
1145     return $choices;
1146 }
1147
1148 /**
1149  * Returns list of roles that are assignable in courses
1150  */
1151 function uu_allowed_roles() {
1152     // let's cheat a bit, frontpage is guaranteed to exist and has the same list of roles ;-)
1153     $roles = get_assignable_roles(get_context_instance(CONTEXT_COURSE, SITEID), ROLENAME_ORIGINALANDSHORT);
1154     return array_reverse($roles, true);
1155 }
1156
1157 function uu_allowed_roles_cache() {
1158     $allowedroles = get_assignable_roles(get_context_instance(CONTEXT_COURSE, SITEID), ROLENAME_SHORT);
1159     foreach ($allowedroles as $rid=>$rname) {
1160         $rolecache[$rid] = new object();
1161         $rolecache[$rid]->id   = $rid;
1162         $rolecache[$rid]->name = $rname;
1163         if (!is_numeric($rname)) { // only non-numeric shortnames are supported!!!
1164             $rolecache[$rname] = new object();
1165             $rolecache[$rname]->id   = $rid;
1166             $rolecache[$rname]->name = $rname;
1167         }
1168     }
1169     return $rolecache;
1170 }